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5796c8dc SS |
1 | /* Remote target communications for serial-line targets in custom GDB protocol |
2 | ||
25e4902b | 3 | Copyright (C) 1988-2015 Free Software Foundation, Inc. |
5796c8dc SS |
4 | |
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 3 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | /* See the GDB User Guide for details of the GDB remote protocol. */ | |
21 | ||
22 | #include "defs.h" | |
5796c8dc SS |
23 | #include <ctype.h> |
24 | #include <fcntl.h> | |
25 | #include "inferior.h" | |
25e4902b | 26 | #include "infrun.h" |
5796c8dc SS |
27 | #include "bfd.h" |
28 | #include "symfile.h" | |
5796c8dc SS |
29 | #include "target.h" |
30 | /*#include "terminal.h" */ | |
31 | #include "gdbcmd.h" | |
32 | #include "objfiles.h" | |
33 | #include "gdb-stabs.h" | |
34 | #include "gdbthread.h" | |
35 | #include "remote.h" | |
ef5ccd6c | 36 | #include "remote-notif.h" |
5796c8dc SS |
37 | #include "regcache.h" |
38 | #include "value.h" | |
5796c8dc SS |
39 | #include "observer.h" |
40 | #include "solib.h" | |
41 | #include "cli/cli-decode.h" | |
42 | #include "cli/cli-setshow.h" | |
43 | #include "target-descriptions.h" | |
ef5ccd6c | 44 | #include "gdb_bfd.h" |
25e4902b AHJ |
45 | #include "filestuff.h" |
46 | #include "rsp-low.h" | |
5796c8dc | 47 | |
5796c8dc SS |
48 | #include <sys/time.h> |
49 | ||
50 | #include "event-loop.h" | |
51 | #include "event-top.h" | |
52 | #include "inf-loop.h" | |
53 | ||
54 | #include <signal.h> | |
55 | #include "serial.h" | |
56 | ||
57 | #include "gdbcore.h" /* for exec_bfd */ | |
58 | ||
59 | #include "remote-fileio.h" | |
60 | #include "gdb/fileio.h" | |
25e4902b | 61 | #include <sys/stat.h> |
cf7f2e2d | 62 | #include "xml-support.h" |
5796c8dc SS |
63 | |
64 | #include "memory-map.h" | |
65 | ||
cf7f2e2d JM |
66 | #include "tracepoint.h" |
67 | #include "ax.h" | |
68 | #include "ax-gdb.h" | |
ef5ccd6c JM |
69 | #include "agent.h" |
70 | #include "btrace.h" | |
cf7f2e2d | 71 | |
c50c785c | 72 | /* Temp hacks for tracepoint encoding migration. */ |
cf7f2e2d JM |
73 | static char *target_buf; |
74 | static long target_buf_size; | |
cf7f2e2d | 75 | |
5796c8dc SS |
76 | /* The size to align memory write packets, when practical. The protocol |
77 | does not guarantee any alignment, and gdb will generate short | |
78 | writes and unaligned writes, but even as a best-effort attempt this | |
79 | can improve bulk transfers. For instance, if a write is misaligned | |
80 | relative to the target's data bus, the stub may need to make an extra | |
81 | round trip fetching data from the target. This doesn't make a | |
82 | huge difference, but it's easy to do, so we try to be helpful. | |
83 | ||
84 | The alignment chosen is arbitrary; usually data bus width is | |
85 | important here, not the possibly larger cache line size. */ | |
86 | enum { REMOTE_ALIGN_WRITES = 16 }; | |
87 | ||
88 | /* Prototypes for local functions. */ | |
25e4902b | 89 | static void async_cleanup_sigint_signal_handler (void *dummy); |
5796c8dc SS |
90 | static int getpkt_sane (char **buf, long *sizeof_buf, int forever); |
91 | static int getpkt_or_notif_sane (char **buf, long *sizeof_buf, | |
ef5ccd6c | 92 | int forever, int *is_notif); |
5796c8dc | 93 | |
25e4902b AHJ |
94 | static void async_handle_remote_sigint (int); |
95 | static void async_handle_remote_sigint_twice (int); | |
5796c8dc SS |
96 | |
97 | static void remote_files_info (struct target_ops *ignore); | |
98 | ||
25e4902b AHJ |
99 | static void remote_prepare_to_store (struct target_ops *self, |
100 | struct regcache *regcache); | |
5796c8dc | 101 | |
25e4902b AHJ |
102 | static void remote_open_1 (const char *, int, struct target_ops *, |
103 | int extended_p); | |
5796c8dc | 104 | |
25e4902b | 105 | static void remote_close (struct target_ops *self); |
5796c8dc | 106 | |
25e4902b | 107 | struct remote_state; |
5796c8dc | 108 | |
25e4902b | 109 | static int remote_vkill (int pid, struct remote_state *rs); |
5796c8dc SS |
110 | |
111 | static void remote_mourn (struct target_ops *ops); | |
112 | ||
113 | static void extended_remote_restart (void); | |
114 | ||
115 | static void extended_remote_mourn (struct target_ops *); | |
116 | ||
5796c8dc SS |
117 | static void remote_send (char **buf, long *sizeof_buf_p); |
118 | ||
119 | static int readchar (int timeout); | |
120 | ||
ef5ccd6c JM |
121 | static void remote_serial_write (const char *str, int len); |
122 | ||
5796c8dc SS |
123 | static void remote_kill (struct target_ops *ops); |
124 | ||
25e4902b | 125 | static int remote_can_async_p (struct target_ops *); |
5796c8dc | 126 | |
25e4902b | 127 | static int remote_is_async_p (struct target_ops *); |
5796c8dc | 128 | |
25e4902b | 129 | static void remote_async (struct target_ops *ops, int enable); |
5796c8dc | 130 | |
25e4902b | 131 | static void sync_remote_interrupt_twice (int signo); |
5796c8dc SS |
132 | |
133 | static void interrupt_query (void); | |
134 | ||
135 | static void set_general_thread (struct ptid ptid); | |
136 | static void set_continue_thread (struct ptid ptid); | |
137 | ||
138 | static void get_offsets (void); | |
139 | ||
140 | static void skip_frame (void); | |
141 | ||
142 | static long read_frame (char **buf_p, long *sizeof_buf); | |
143 | ||
144 | static int hexnumlen (ULONGEST num); | |
145 | ||
146 | static void init_remote_ops (void); | |
147 | ||
148 | static void init_extended_remote_ops (void); | |
149 | ||
25e4902b | 150 | static void remote_stop (struct target_ops *self, ptid_t); |
5796c8dc SS |
151 | |
152 | static int stubhex (int ch); | |
153 | ||
154 | static int hexnumstr (char *, ULONGEST); | |
155 | ||
156 | static int hexnumnstr (char *, ULONGEST, int); | |
157 | ||
158 | static CORE_ADDR remote_address_masked (CORE_ADDR); | |
159 | ||
25e4902b | 160 | static void print_packet (const char *); |
5796c8dc | 161 | |
5796c8dc SS |
162 | static void compare_sections_command (char *, int); |
163 | ||
164 | static void packet_command (char *, int); | |
165 | ||
166 | static int stub_unpack_int (char *buff, int fieldlength); | |
167 | ||
168 | static ptid_t remote_current_thread (ptid_t oldptid); | |
169 | ||
25e4902b | 170 | static int putpkt_binary (const char *buf, int cnt); |
5796c8dc SS |
171 | |
172 | static void check_binary_download (CORE_ADDR addr); | |
173 | ||
174 | struct packet_config; | |
175 | ||
176 | static void show_packet_config_cmd (struct packet_config *config); | |
177 | ||
5796c8dc SS |
178 | static void show_remote_protocol_packet_cmd (struct ui_file *file, |
179 | int from_tty, | |
180 | struct cmd_list_element *c, | |
181 | const char *value); | |
182 | ||
183 | static char *write_ptid (char *buf, const char *endbuf, ptid_t ptid); | |
184 | static ptid_t read_ptid (char *buf, char **obuf); | |
185 | ||
25e4902b | 186 | static void remote_set_permissions (struct target_ops *self); |
cf7f2e2d | 187 | |
25e4902b AHJ |
188 | static int remote_get_trace_status (struct target_ops *self, |
189 | struct trace_status *ts); | |
cf7f2e2d | 190 | |
25e4902b AHJ |
191 | static int remote_upload_tracepoints (struct target_ops *self, |
192 | struct uploaded_tp **utpp); | |
cf7f2e2d | 193 | |
25e4902b AHJ |
194 | static int remote_upload_trace_state_variables (struct target_ops *self, |
195 | struct uploaded_tsv **utsvp); | |
cf7f2e2d | 196 | |
5796c8dc SS |
197 | static void remote_query_supported (void); |
198 | ||
25e4902b | 199 | static void remote_check_symbols (void); |
5796c8dc SS |
200 | |
201 | void _initialize_remote (void); | |
202 | ||
203 | struct stop_reply; | |
5796c8dc | 204 | static void stop_reply_xfree (struct stop_reply *); |
ef5ccd6c | 205 | static void remote_parse_stop_reply (char *, struct stop_reply *); |
5796c8dc | 206 | static void push_stop_reply (struct stop_reply *); |
25e4902b | 207 | static void discard_pending_stop_replies_in_queue (struct remote_state *); |
5796c8dc SS |
208 | static int peek_stop_reply (ptid_t ptid); |
209 | ||
25e4902b AHJ |
210 | struct threads_listing_context; |
211 | static void remove_new_fork_children (struct threads_listing_context *); | |
212 | ||
5796c8dc | 213 | static void remote_async_inferior_event_handler (gdb_client_data); |
5796c8dc | 214 | |
25e4902b | 215 | static void remote_terminal_ours (struct target_ops *self); |
5796c8dc SS |
216 | |
217 | static int remote_read_description_p (struct target_ops *target); | |
218 | ||
cf7f2e2d JM |
219 | static void remote_console_output (char *msg); |
220 | ||
25e4902b AHJ |
221 | static int remote_supports_cond_breakpoints (struct target_ops *self); |
222 | ||
223 | static int remote_can_run_breakpoint_commands (struct target_ops *self); | |
224 | ||
225 | static void remote_btrace_reset (void); | |
5796c8dc | 226 | |
25e4902b | 227 | static void readahead_cache_invalidate (void); |
5796c8dc SS |
228 | |
229 | /* For "remote". */ | |
230 | ||
231 | static struct cmd_list_element *remote_cmdlist; | |
232 | ||
233 | /* For "set remote" and "show remote". */ | |
234 | ||
235 | static struct cmd_list_element *remote_set_cmdlist; | |
236 | static struct cmd_list_element *remote_show_cmdlist; | |
237 | ||
25e4902b AHJ |
238 | /* Stub vCont actions support. |
239 | ||
240 | Each field is a boolean flag indicating whether the stub reports | |
241 | support for the corresponding action. */ | |
242 | ||
243 | struct vCont_action_support | |
244 | { | |
245 | /* vCont;t */ | |
246 | int t; | |
247 | ||
248 | /* vCont;r */ | |
249 | int r; | |
250 | }; | |
251 | ||
252 | /* Controls whether GDB is willing to use range stepping. */ | |
253 | ||
254 | static int use_range_stepping = 1; | |
255 | ||
256 | #define OPAQUETHREADBYTES 8 | |
257 | ||
258 | /* a 64 bit opaque identifier */ | |
259 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
260 | ||
261 | /* About this many threadisds fit in a packet. */ | |
262 | ||
263 | #define MAXTHREADLISTRESULTS 32 | |
264 | ||
265 | /* Data for the vFile:pread readahead cache. */ | |
266 | ||
267 | struct readahead_cache | |
268 | { | |
269 | /* The file descriptor for the file that is being cached. -1 if the | |
270 | cache is invalid. */ | |
271 | int fd; | |
272 | ||
273 | /* The offset into the file that the cache buffer corresponds | |
274 | to. */ | |
275 | ULONGEST offset; | |
276 | ||
277 | /* The buffer holding the cache contents. */ | |
278 | gdb_byte *buf; | |
279 | /* The buffer's size. We try to read as much as fits into a packet | |
280 | at a time. */ | |
281 | size_t bufsize; | |
282 | ||
283 | /* Cache hit and miss counters. */ | |
284 | ULONGEST hit_count; | |
285 | ULONGEST miss_count; | |
286 | }; | |
287 | ||
5796c8dc SS |
288 | /* Description of the remote protocol state for the currently |
289 | connected target. This is per-target state, and independent of the | |
290 | selected architecture. */ | |
291 | ||
292 | struct remote_state | |
293 | { | |
294 | /* A buffer to use for incoming packets, and its current size. The | |
295 | buffer is grown dynamically for larger incoming packets. | |
296 | Outgoing packets may also be constructed in this buffer. | |
297 | BUF_SIZE is always at least REMOTE_PACKET_SIZE; | |
298 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing | |
299 | packets. */ | |
300 | char *buf; | |
301 | long buf_size; | |
302 | ||
a45ae5f8 JM |
303 | /* True if we're going through initial connection setup (finding out |
304 | about the remote side's threads, relocating symbols, etc.). */ | |
305 | int starting_up; | |
306 | ||
5796c8dc SS |
307 | /* If we negotiated packet size explicitly (and thus can bypass |
308 | heuristics for the largest packet size that will not overflow | |
309 | a buffer in the stub), this will be set to that packet size. | |
310 | Otherwise zero, meaning to use the guessed size. */ | |
311 | long explicit_packet_size; | |
312 | ||
313 | /* remote_wait is normally called when the target is running and | |
314 | waits for a stop reply packet. But sometimes we need to call it | |
315 | when the target is already stopped. We can send a "?" packet | |
316 | and have remote_wait read the response. Or, if we already have | |
317 | the response, we can stash it in BUF and tell remote_wait to | |
318 | skip calling getpkt. This flag is set when BUF contains a | |
319 | stop reply packet and the target is not waiting. */ | |
320 | int cached_wait_status; | |
321 | ||
322 | /* True, if in no ack mode. That is, neither GDB nor the stub will | |
323 | expect acks from each other. The connection is assumed to be | |
324 | reliable. */ | |
325 | int noack_mode; | |
326 | ||
327 | /* True if we're connected in extended remote mode. */ | |
328 | int extended; | |
329 | ||
5796c8dc SS |
330 | /* True if we resumed the target and we're waiting for the target to |
331 | stop. In the mean time, we can't start another command/query. | |
332 | The remote server wouldn't be ready to process it, so we'd | |
333 | timeout waiting for a reply that would never come and eventually | |
334 | we'd close the connection. This can happen in asynchronous mode | |
335 | because we allow GDB commands while the target is running. */ | |
336 | int waiting_for_stop_reply; | |
337 | ||
25e4902b AHJ |
338 | /* The status of the stub support for the various vCont actions. */ |
339 | struct vCont_action_support supports_vCont; | |
5796c8dc | 340 | |
25e4902b AHJ |
341 | /* Nonzero if the user has pressed Ctrl-C, but the target hasn't |
342 | responded to that. */ | |
343 | int ctrlc_pending_p; | |
5796c8dc | 344 | |
25e4902b AHJ |
345 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
346 | remote_open knows that we don't have a file open when the program | |
347 | starts. */ | |
348 | struct serial *remote_desc; | |
cf7f2e2d | 349 | |
25e4902b AHJ |
350 | /* These are the threads which we last sent to the remote system. The |
351 | TID member will be -1 for all or -2 for not sent yet. */ | |
352 | ptid_t general_thread; | |
353 | ptid_t continue_thread; | |
ef5ccd6c | 354 | |
25e4902b AHJ |
355 | /* This is the traceframe which we last selected on the remote system. |
356 | It will be -1 if no traceframe is selected. */ | |
357 | int remote_traceframe_number; | |
ef5ccd6c | 358 | |
25e4902b | 359 | char *last_pass_packet; |
cf7f2e2d | 360 | |
25e4902b AHJ |
361 | /* The last QProgramSignals packet sent to the target. We bypass |
362 | sending a new program signals list down to the target if the new | |
363 | packet is exactly the same as the last we sent. IOW, we only let | |
364 | the target know about program signals list changes. */ | |
365 | char *last_program_signals_packet; | |
cf7f2e2d | 366 | |
25e4902b | 367 | enum gdb_signal last_sent_signal; |
a45ae5f8 | 368 | |
25e4902b | 369 | int last_sent_step; |
cf7f2e2d | 370 | |
25e4902b AHJ |
371 | char *finished_object; |
372 | char *finished_annex; | |
373 | ULONGEST finished_offset; | |
a45ae5f8 | 374 | |
25e4902b | 375 | /* Should we try the 'ThreadInfo' query packet? |
a45ae5f8 | 376 | |
25e4902b AHJ |
377 | This variable (NOT available to the user: auto-detect only!) |
378 | determines whether GDB will use the new, simpler "ThreadInfo" | |
379 | query or the older, more complex syntax for thread queries. | |
380 | This is an auto-detect variable (set to true at each connect, | |
381 | and set to false when the target fails to recognize it). */ | |
382 | int use_threadinfo_query; | |
383 | int use_threadextra_query; | |
384 | ||
385 | /* This is set to the data address of the access causing the target | |
386 | to stop for a watchpoint. */ | |
387 | CORE_ADDR remote_watch_data_address; | |
388 | ||
389 | /* Whether the target stopped for a breakpoint/watchpoint. */ | |
390 | enum target_stop_reason stop_reason; | |
391 | ||
392 | threadref echo_nextthread; | |
393 | threadref nextthread; | |
394 | threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
395 | ||
396 | /* The state of remote notification. */ | |
397 | struct remote_notif_state *notif_state; | |
398 | ||
399 | /* The branch trace configuration. */ | |
400 | struct btrace_config btrace_config; | |
401 | ||
402 | /* The argument to the last "vFile:setfs:" packet we sent, used | |
403 | to avoid sending repeated unnecessary "vFile:setfs:" packets. | |
404 | Initialized to -1 to indicate that no "vFile:setfs:" packet | |
405 | has yet been sent. */ | |
406 | int fs_pid; | |
407 | ||
408 | /* A readahead cache for vFile:pread. Often, reading a binary | |
409 | involves a sequence of small reads. E.g., when parsing an ELF | |
410 | file. A readahead cache helps mostly the case of remote | |
411 | debugging on a connection with higher latency, due to the | |
412 | request/reply nature of the RSP. We only cache data for a single | |
413 | file descriptor at a time. */ | |
414 | struct readahead_cache readahead_cache; | |
5796c8dc SS |
415 | }; |
416 | ||
cf7f2e2d JM |
417 | /* Private data that we'll store in (struct thread_info)->private. */ |
418 | struct private_thread_info | |
419 | { | |
420 | char *extra; | |
421 | int core; | |
422 | }; | |
423 | ||
424 | static void | |
425 | free_private_thread_info (struct private_thread_info *info) | |
426 | { | |
427 | xfree (info->extra); | |
428 | xfree (info); | |
429 | } | |
430 | ||
5796c8dc SS |
431 | /* This data could be associated with a target, but we do not always |
432 | have access to the current target when we need it, so for now it is | |
433 | static. This will be fine for as long as only one target is in use | |
434 | at a time. */ | |
25e4902b | 435 | static struct remote_state *remote_state; |
5796c8dc SS |
436 | |
437 | static struct remote_state * | |
438 | get_remote_state_raw (void) | |
439 | { | |
25e4902b AHJ |
440 | return remote_state; |
441 | } | |
442 | ||
443 | /* Allocate a new struct remote_state with xmalloc, initialize it, and | |
444 | return it. */ | |
445 | ||
446 | static struct remote_state * | |
447 | new_remote_state (void) | |
448 | { | |
449 | struct remote_state *result = XCNEW (struct remote_state); | |
450 | ||
451 | /* The default buffer size is unimportant; it will be expanded | |
452 | whenever a larger buffer is needed. */ | |
453 | result->buf_size = 400; | |
454 | result->buf = xmalloc (result->buf_size); | |
455 | result->remote_traceframe_number = -1; | |
456 | result->last_sent_signal = GDB_SIGNAL_0; | |
457 | result->fs_pid = -1; | |
458 | ||
459 | return result; | |
5796c8dc SS |
460 | } |
461 | ||
462 | /* Description of the remote protocol for a given architecture. */ | |
463 | ||
464 | struct packet_reg | |
465 | { | |
466 | long offset; /* Offset into G packet. */ | |
467 | long regnum; /* GDB's internal register number. */ | |
468 | LONGEST pnum; /* Remote protocol register number. */ | |
469 | int in_g_packet; /* Always part of G packet. */ | |
ef5ccd6c | 470 | /* long size in bytes; == register_size (target_gdbarch (), regnum); |
5796c8dc | 471 | at present. */ |
ef5ccd6c | 472 | /* char *name; == gdbarch_register_name (target_gdbarch (), regnum); |
5796c8dc SS |
473 | at present. */ |
474 | }; | |
475 | ||
476 | struct remote_arch_state | |
477 | { | |
478 | /* Description of the remote protocol registers. */ | |
479 | long sizeof_g_packet; | |
480 | ||
481 | /* Description of the remote protocol registers indexed by REGNUM | |
482 | (making an array gdbarch_num_regs in size). */ | |
483 | struct packet_reg *regs; | |
484 | ||
485 | /* This is the size (in chars) of the first response to the ``g'' | |
486 | packet. It is used as a heuristic when determining the maximum | |
487 | size of memory-read and memory-write packets. A target will | |
488 | typically only reserve a buffer large enough to hold the ``g'' | |
489 | packet. The size does not include packet overhead (headers and | |
490 | trailers). */ | |
491 | long actual_register_packet_size; | |
492 | ||
493 | /* This is the maximum size (in chars) of a non read/write packet. | |
494 | It is also used as a cap on the size of read/write packets. */ | |
495 | long remote_packet_size; | |
496 | }; | |
497 | ||
cf7f2e2d JM |
498 | /* Utility: generate error from an incoming stub packet. */ |
499 | static void | |
500 | trace_error (char *buf) | |
501 | { | |
502 | if (*buf++ != 'E') | |
503 | return; /* not an error msg */ | |
504 | switch (*buf) | |
505 | { | |
506 | case '1': /* malformed packet error */ | |
507 | if (*++buf == '0') /* general case: */ | |
508 | error (_("remote.c: error in outgoing packet.")); | |
509 | else | |
510 | error (_("remote.c: error in outgoing packet at field #%ld."), | |
511 | strtol (buf, NULL, 16)); | |
cf7f2e2d JM |
512 | default: |
513 | error (_("Target returns error code '%s'."), buf); | |
514 | } | |
515 | } | |
516 | ||
517 | /* Utility: wait for reply from stub, while accepting "O" packets. */ | |
518 | static char * | |
519 | remote_get_noisy_reply (char **buf_p, | |
520 | long *sizeof_buf) | |
521 | { | |
522 | do /* Loop on reply from remote stub. */ | |
523 | { | |
524 | char *buf; | |
525 | ||
c50c785c | 526 | QUIT; /* Allow user to bail out with ^C. */ |
cf7f2e2d JM |
527 | getpkt (buf_p, sizeof_buf, 0); |
528 | buf = *buf_p; | |
529 | if (buf[0] == 'E') | |
530 | trace_error (buf); | |
25e4902b | 531 | else if (startswith (buf, "qRelocInsn:")) |
cf7f2e2d JM |
532 | { |
533 | ULONGEST ul; | |
534 | CORE_ADDR from, to, org_to; | |
535 | char *p, *pp; | |
536 | int adjusted_size = 0; | |
25e4902b | 537 | int relocated = 0; |
cf7f2e2d JM |
538 | |
539 | p = buf + strlen ("qRelocInsn:"); | |
540 | pp = unpack_varlen_hex (p, &ul); | |
541 | if (*pp != ';') | |
542 | error (_("invalid qRelocInsn packet: %s"), buf); | |
543 | from = ul; | |
544 | ||
545 | p = pp + 1; | |
c50c785c | 546 | unpack_varlen_hex (p, &ul); |
cf7f2e2d JM |
547 | to = ul; |
548 | ||
549 | org_to = to; | |
550 | ||
25e4902b | 551 | TRY |
cf7f2e2d | 552 | { |
ef5ccd6c | 553 | gdbarch_relocate_instruction (target_gdbarch (), &to, from); |
25e4902b AHJ |
554 | relocated = 1; |
555 | } | |
556 | CATCH (ex, RETURN_MASK_ALL) | |
557 | { | |
558 | if (ex.error == MEMORY_ERROR) | |
559 | { | |
560 | /* Propagate memory errors silently back to the | |
561 | target. The stub may have limited the range of | |
562 | addresses we can write to, for example. */ | |
563 | } | |
564 | else | |
565 | { | |
566 | /* Something unexpectedly bad happened. Be verbose | |
567 | so we can tell what, and propagate the error back | |
568 | to the stub, so it doesn't get stuck waiting for | |
569 | a response. */ | |
570 | exception_fprintf (gdb_stderr, ex, | |
571 | _("warning: relocating instruction: ")); | |
572 | } | |
573 | putpkt ("E01"); | |
cf7f2e2d | 574 | } |
25e4902b AHJ |
575 | END_CATCH |
576 | ||
577 | if (relocated) | |
cf7f2e2d JM |
578 | { |
579 | adjusted_size = to - org_to; | |
580 | ||
ef5ccd6c | 581 | xsnprintf (buf, *sizeof_buf, "qRelocInsn:%x", adjusted_size); |
cf7f2e2d JM |
582 | putpkt (buf); |
583 | } | |
cf7f2e2d JM |
584 | } |
585 | else if (buf[0] == 'O' && buf[1] != 'K') | |
586 | remote_console_output (buf + 1); /* 'O' message from stub */ | |
587 | else | |
c50c785c | 588 | return buf; /* Here's the actual reply. */ |
cf7f2e2d JM |
589 | } |
590 | while (1); | |
591 | } | |
5796c8dc SS |
592 | |
593 | /* Handle for retreving the remote protocol data from gdbarch. */ | |
594 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
595 | ||
596 | static struct remote_arch_state * | |
597 | get_remote_arch_state (void) | |
598 | { | |
ef5ccd6c | 599 | return gdbarch_data (target_gdbarch (), remote_gdbarch_data_handle); |
5796c8dc SS |
600 | } |
601 | ||
602 | /* Fetch the global remote target state. */ | |
603 | ||
604 | static struct remote_state * | |
605 | get_remote_state (void) | |
606 | { | |
607 | /* Make sure that the remote architecture state has been | |
608 | initialized, because doing so might reallocate rs->buf. Any | |
609 | function which calls getpkt also needs to be mindful of changes | |
610 | to rs->buf, but this call limits the number of places which run | |
611 | into trouble. */ | |
612 | get_remote_arch_state (); | |
613 | ||
614 | return get_remote_state_raw (); | |
615 | } | |
616 | ||
617 | static int | |
618 | compare_pnums (const void *lhs_, const void *rhs_) | |
619 | { | |
620 | const struct packet_reg * const *lhs = lhs_; | |
621 | const struct packet_reg * const *rhs = rhs_; | |
622 | ||
623 | if ((*lhs)->pnum < (*rhs)->pnum) | |
624 | return -1; | |
625 | else if ((*lhs)->pnum == (*rhs)->pnum) | |
626 | return 0; | |
627 | else | |
628 | return 1; | |
629 | } | |
630 | ||
a45ae5f8 JM |
631 | static int |
632 | map_regcache_remote_table (struct gdbarch *gdbarch, struct packet_reg *regs) | |
5796c8dc SS |
633 | { |
634 | int regnum, num_remote_regs, offset; | |
5796c8dc SS |
635 | struct packet_reg **remote_regs; |
636 | ||
5796c8dc SS |
637 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) |
638 | { | |
a45ae5f8 | 639 | struct packet_reg *r = ®s[regnum]; |
5796c8dc SS |
640 | |
641 | if (register_size (gdbarch, regnum) == 0) | |
642 | /* Do not try to fetch zero-sized (placeholder) registers. */ | |
643 | r->pnum = -1; | |
644 | else | |
645 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
646 | ||
647 | r->regnum = regnum; | |
648 | } | |
649 | ||
650 | /* Define the g/G packet format as the contents of each register | |
651 | with a remote protocol number, in order of ascending protocol | |
652 | number. */ | |
653 | ||
654 | remote_regs = alloca (gdbarch_num_regs (gdbarch) | |
a45ae5f8 | 655 | * sizeof (struct packet_reg *)); |
5796c8dc SS |
656 | for (num_remote_regs = 0, regnum = 0; |
657 | regnum < gdbarch_num_regs (gdbarch); | |
658 | regnum++) | |
a45ae5f8 JM |
659 | if (regs[regnum].pnum != -1) |
660 | remote_regs[num_remote_regs++] = ®s[regnum]; | |
5796c8dc SS |
661 | |
662 | qsort (remote_regs, num_remote_regs, sizeof (struct packet_reg *), | |
663 | compare_pnums); | |
664 | ||
665 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
666 | { | |
667 | remote_regs[regnum]->in_g_packet = 1; | |
668 | remote_regs[regnum]->offset = offset; | |
669 | offset += register_size (gdbarch, remote_regs[regnum]->regnum); | |
670 | } | |
671 | ||
a45ae5f8 JM |
672 | return offset; |
673 | } | |
674 | ||
675 | /* Given the architecture described by GDBARCH, return the remote | |
676 | protocol register's number and the register's offset in the g/G | |
677 | packets of GDB register REGNUM, in PNUM and POFFSET respectively. | |
678 | If the target does not have a mapping for REGNUM, return false, | |
679 | otherwise, return true. */ | |
680 | ||
681 | int | |
682 | remote_register_number_and_offset (struct gdbarch *gdbarch, int regnum, | |
683 | int *pnum, int *poffset) | |
684 | { | |
685 | int sizeof_g_packet; | |
686 | struct packet_reg *regs; | |
687 | struct cleanup *old_chain; | |
688 | ||
689 | gdb_assert (regnum < gdbarch_num_regs (gdbarch)); | |
690 | ||
691 | regs = xcalloc (gdbarch_num_regs (gdbarch), sizeof (struct packet_reg)); | |
692 | old_chain = make_cleanup (xfree, regs); | |
693 | ||
694 | sizeof_g_packet = map_regcache_remote_table (gdbarch, regs); | |
695 | ||
696 | *pnum = regs[regnum].pnum; | |
697 | *poffset = regs[regnum].offset; | |
698 | ||
699 | do_cleanups (old_chain); | |
700 | ||
701 | return *pnum != -1; | |
702 | } | |
703 | ||
704 | static void * | |
705 | init_remote_state (struct gdbarch *gdbarch) | |
706 | { | |
707 | struct remote_state *rs = get_remote_state_raw (); | |
708 | struct remote_arch_state *rsa; | |
709 | ||
710 | rsa = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_arch_state); | |
711 | ||
712 | /* Use the architecture to build a regnum<->pnum table, which will be | |
713 | 1:1 unless a feature set specifies otherwise. */ | |
714 | rsa->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, | |
715 | gdbarch_num_regs (gdbarch), | |
716 | struct packet_reg); | |
717 | ||
5796c8dc SS |
718 | /* Record the maximum possible size of the g packet - it may turn out |
719 | to be smaller. */ | |
a45ae5f8 | 720 | rsa->sizeof_g_packet = map_regcache_remote_table (gdbarch, rsa->regs); |
5796c8dc | 721 | |
c50c785c | 722 | /* Default maximum number of characters in a packet body. Many |
5796c8dc SS |
723 | remote stubs have a hardwired buffer size of 400 bytes |
724 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
725 | as the maximum packet-size to ensure that the packet and an extra | |
726 | NUL character can always fit in the buffer. This stops GDB | |
727 | trashing stubs that try to squeeze an extra NUL into what is | |
728 | already a full buffer (As of 1999-12-04 that was most stubs). */ | |
729 | rsa->remote_packet_size = 400 - 1; | |
730 | ||
731 | /* This one is filled in when a ``g'' packet is received. */ | |
732 | rsa->actual_register_packet_size = 0; | |
733 | ||
734 | /* Should rsa->sizeof_g_packet needs more space than the | |
c50c785c JM |
735 | default, adjust the size accordingly. Remember that each byte is |
736 | encoded as two characters. 32 is the overhead for the packet | |
737 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
5796c8dc SS |
738 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
739 | little. */ | |
740 | if (rsa->sizeof_g_packet > ((rsa->remote_packet_size - 32) / 2)) | |
741 | rsa->remote_packet_size = (rsa->sizeof_g_packet * 2 + 32); | |
742 | ||
743 | /* Make sure that the packet buffer is plenty big enough for | |
744 | this architecture. */ | |
745 | if (rs->buf_size < rsa->remote_packet_size) | |
746 | { | |
747 | rs->buf_size = 2 * rsa->remote_packet_size; | |
748 | rs->buf = xrealloc (rs->buf, rs->buf_size); | |
749 | } | |
750 | ||
751 | return rsa; | |
752 | } | |
753 | ||
754 | /* Return the current allowed size of a remote packet. This is | |
755 | inferred from the current architecture, and should be used to | |
756 | limit the length of outgoing packets. */ | |
757 | static long | |
758 | get_remote_packet_size (void) | |
759 | { | |
760 | struct remote_state *rs = get_remote_state (); | |
761 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
762 | ||
763 | if (rs->explicit_packet_size) | |
764 | return rs->explicit_packet_size; | |
765 | ||
766 | return rsa->remote_packet_size; | |
767 | } | |
768 | ||
769 | static struct packet_reg * | |
770 | packet_reg_from_regnum (struct remote_arch_state *rsa, long regnum) | |
771 | { | |
ef5ccd6c | 772 | if (regnum < 0 && regnum >= gdbarch_num_regs (target_gdbarch ())) |
5796c8dc SS |
773 | return NULL; |
774 | else | |
775 | { | |
776 | struct packet_reg *r = &rsa->regs[regnum]; | |
cf7f2e2d | 777 | |
5796c8dc SS |
778 | gdb_assert (r->regnum == regnum); |
779 | return r; | |
780 | } | |
781 | } | |
782 | ||
783 | static struct packet_reg * | |
784 | packet_reg_from_pnum (struct remote_arch_state *rsa, LONGEST pnum) | |
785 | { | |
786 | int i; | |
cf7f2e2d | 787 | |
ef5ccd6c | 788 | for (i = 0; i < gdbarch_num_regs (target_gdbarch ()); i++) |
5796c8dc SS |
789 | { |
790 | struct packet_reg *r = &rsa->regs[i]; | |
cf7f2e2d | 791 | |
5796c8dc SS |
792 | if (r->pnum == pnum) |
793 | return r; | |
794 | } | |
795 | return NULL; | |
796 | } | |
797 | ||
5796c8dc SS |
798 | static struct target_ops remote_ops; |
799 | ||
800 | static struct target_ops extended_remote_ops; | |
801 | ||
5796c8dc SS |
802 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
803 | ``forever'' still use the normal timeout mechanism. This is | |
804 | currently used by the ASYNC code to guarentee that target reads | |
805 | during the initial connect always time-out. Once getpkt has been | |
806 | modified to return a timeout indication and, in turn | |
807 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
808 | this can go away. */ | |
809 | static int wait_forever_enabled_p = 1; | |
810 | ||
cf7f2e2d JM |
811 | /* Allow the user to specify what sequence to send to the remote |
812 | when he requests a program interruption: Although ^C is usually | |
813 | what remote systems expect (this is the default, here), it is | |
814 | sometimes preferable to send a break. On other systems such | |
815 | as the Linux kernel, a break followed by g, which is Magic SysRq g | |
816 | is required in order to interrupt the execution. */ | |
817 | const char interrupt_sequence_control_c[] = "Ctrl-C"; | |
818 | const char interrupt_sequence_break[] = "BREAK"; | |
819 | const char interrupt_sequence_break_g[] = "BREAK-g"; | |
ef5ccd6c | 820 | static const char *const interrupt_sequence_modes[] = |
cf7f2e2d JM |
821 | { |
822 | interrupt_sequence_control_c, | |
823 | interrupt_sequence_break, | |
824 | interrupt_sequence_break_g, | |
825 | NULL | |
826 | }; | |
827 | static const char *interrupt_sequence_mode = interrupt_sequence_control_c; | |
828 | ||
829 | static void | |
830 | show_interrupt_sequence (struct ui_file *file, int from_tty, | |
831 | struct cmd_list_element *c, | |
832 | const char *value) | |
833 | { | |
834 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
835 | fprintf_filtered (file, | |
836 | _("Send the ASCII ETX character (Ctrl-c) " | |
837 | "to the remote target to interrupt the " | |
838 | "execution of the program.\n")); | |
839 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
840 | fprintf_filtered (file, | |
841 | _("send a break signal to the remote target " | |
842 | "to interrupt the execution of the program.\n")); | |
843 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
844 | fprintf_filtered (file, | |
845 | _("Send a break signal and 'g' a.k.a. Magic SysRq g to " | |
846 | "the remote target to interrupt the execution " | |
847 | "of Linux kernel.\n")); | |
848 | else | |
849 | internal_error (__FILE__, __LINE__, | |
850 | _("Invalid value for interrupt_sequence_mode: %s."), | |
851 | interrupt_sequence_mode); | |
852 | } | |
5796c8dc | 853 | |
cf7f2e2d JM |
854 | /* This boolean variable specifies whether interrupt_sequence is sent |
855 | to the remote target when gdb connects to it. | |
856 | This is mostly needed when you debug the Linux kernel: The Linux kernel | |
857 | expects BREAK g which is Magic SysRq g for connecting gdb. */ | |
858 | static int interrupt_on_connect = 0; | |
5796c8dc | 859 | |
cf7f2e2d JM |
860 | /* This variable is used to implement the "set/show remotebreak" commands. |
861 | Since these commands are now deprecated in favor of "set/show remote | |
862 | interrupt-sequence", it no longer has any effect on the code. */ | |
5796c8dc SS |
863 | static int remote_break; |
864 | ||
cf7f2e2d JM |
865 | static void |
866 | set_remotebreak (char *args, int from_tty, struct cmd_list_element *c) | |
867 | { | |
868 | if (remote_break) | |
869 | interrupt_sequence_mode = interrupt_sequence_break; | |
870 | else | |
871 | interrupt_sequence_mode = interrupt_sequence_control_c; | |
872 | } | |
873 | ||
874 | static void | |
875 | show_remotebreak (struct ui_file *file, int from_tty, | |
876 | struct cmd_list_element *c, | |
877 | const char *value) | |
878 | { | |
879 | } | |
880 | ||
5796c8dc SS |
881 | /* This variable sets the number of bits in an address that are to be |
882 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
c50c785c | 883 | leading zeros, the entire address would be sent. This variable |
5796c8dc SS |
884 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The |
885 | initial implementation of remote.c restricted the address sent in | |
886 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
887 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
888 | address was never sent. Since fixing this bug may cause a break in | |
889 | some remote targets this variable is principly provided to | |
890 | facilitate backward compatibility. */ | |
891 | ||
ef5ccd6c | 892 | static unsigned int remote_address_size; |
5796c8dc SS |
893 | |
894 | /* Temporary to track who currently owns the terminal. See | |
895 | remote_terminal_* for more details. */ | |
896 | ||
897 | static int remote_async_terminal_ours_p; | |
898 | ||
899 | /* The executable file to use for "run" on the remote side. */ | |
900 | ||
901 | static char *remote_exec_file = ""; | |
902 | ||
903 | \f | |
904 | /* User configurable variables for the number of characters in a | |
905 | memory read/write packet. MIN (rsa->remote_packet_size, | |
906 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
907 | values (fifo overruns, et.al.) and some users need larger values | |
908 | (speed up transfers). The variables ``preferred_*'' (the user | |
909 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
910 | (Positive - a soft limit, negative - a hard limit). */ | |
911 | ||
912 | struct memory_packet_config | |
913 | { | |
914 | char *name; | |
915 | long size; | |
916 | int fixed_p; | |
917 | }; | |
918 | ||
919 | /* Compute the current size of a read/write packet. Since this makes | |
920 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
921 | ||
922 | static long | |
923 | get_memory_packet_size (struct memory_packet_config *config) | |
924 | { | |
925 | struct remote_state *rs = get_remote_state (); | |
926 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
927 | ||
928 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk | |
929 | law?) that some hosts don't cope very well with large alloca() | |
930 | calls. Eventually the alloca() code will be replaced by calls to | |
931 | xmalloc() and make_cleanups() allowing this restriction to either | |
932 | be lifted or removed. */ | |
933 | #ifndef MAX_REMOTE_PACKET_SIZE | |
934 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
935 | #endif | |
936 | /* NOTE: 20 ensures we can write at least one byte. */ | |
937 | #ifndef MIN_REMOTE_PACKET_SIZE | |
938 | #define MIN_REMOTE_PACKET_SIZE 20 | |
939 | #endif | |
940 | long what_they_get; | |
941 | if (config->fixed_p) | |
942 | { | |
943 | if (config->size <= 0) | |
944 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
945 | else | |
946 | what_they_get = config->size; | |
947 | } | |
948 | else | |
949 | { | |
950 | what_they_get = get_remote_packet_size (); | |
951 | /* Limit the packet to the size specified by the user. */ | |
952 | if (config->size > 0 | |
953 | && what_they_get > config->size) | |
954 | what_they_get = config->size; | |
955 | ||
956 | /* Limit it to the size of the targets ``g'' response unless we have | |
957 | permission from the stub to use a larger packet size. */ | |
958 | if (rs->explicit_packet_size == 0 | |
959 | && rsa->actual_register_packet_size > 0 | |
960 | && what_they_get > rsa->actual_register_packet_size) | |
961 | what_they_get = rsa->actual_register_packet_size; | |
962 | } | |
963 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
964 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
965 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
966 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
967 | ||
968 | /* Make sure there is room in the global buffer for this packet | |
969 | (including its trailing NUL byte). */ | |
970 | if (rs->buf_size < what_they_get + 1) | |
971 | { | |
972 | rs->buf_size = 2 * what_they_get; | |
973 | rs->buf = xrealloc (rs->buf, 2 * what_they_get); | |
974 | } | |
975 | ||
976 | return what_they_get; | |
977 | } | |
978 | ||
c50c785c | 979 | /* Update the size of a read/write packet. If they user wants |
5796c8dc SS |
980 | something really big then do a sanity check. */ |
981 | ||
982 | static void | |
983 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
984 | { | |
985 | int fixed_p = config->fixed_p; | |
986 | long size = config->size; | |
cf7f2e2d | 987 | |
5796c8dc SS |
988 | if (args == NULL) |
989 | error (_("Argument required (integer, `fixed' or `limited').")); | |
990 | else if (strcmp (args, "hard") == 0 | |
991 | || strcmp (args, "fixed") == 0) | |
992 | fixed_p = 1; | |
993 | else if (strcmp (args, "soft") == 0 | |
994 | || strcmp (args, "limit") == 0) | |
995 | fixed_p = 0; | |
996 | else | |
997 | { | |
998 | char *end; | |
cf7f2e2d | 999 | |
5796c8dc SS |
1000 | size = strtoul (args, &end, 0); |
1001 | if (args == end) | |
1002 | error (_("Invalid %s (bad syntax)."), config->name); | |
1003 | #if 0 | |
1004 | /* Instead of explicitly capping the size of a packet to | |
1005 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
1006 | instead allowed to set the size to something arbitrarily | |
1007 | large. */ | |
1008 | if (size > MAX_REMOTE_PACKET_SIZE) | |
1009 | error (_("Invalid %s (too large)."), config->name); | |
1010 | #endif | |
1011 | } | |
1012 | /* Extra checks? */ | |
1013 | if (fixed_p && !config->fixed_p) | |
1014 | { | |
1015 | if (! query (_("The target may not be able to correctly handle a %s\n" | |
1016 | "of %ld bytes. Change the packet size? "), | |
1017 | config->name, size)) | |
1018 | error (_("Packet size not changed.")); | |
1019 | } | |
1020 | /* Update the config. */ | |
1021 | config->fixed_p = fixed_p; | |
1022 | config->size = size; | |
1023 | } | |
1024 | ||
1025 | static void | |
1026 | show_memory_packet_size (struct memory_packet_config *config) | |
1027 | { | |
1028 | printf_filtered (_("The %s is %ld. "), config->name, config->size); | |
1029 | if (config->fixed_p) | |
1030 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), | |
1031 | get_memory_packet_size (config)); | |
1032 | else | |
1033 | printf_filtered (_("Packets are limited to %ld bytes.\n"), | |
1034 | get_memory_packet_size (config)); | |
1035 | } | |
1036 | ||
1037 | static struct memory_packet_config memory_write_packet_config = | |
1038 | { | |
1039 | "memory-write-packet-size", | |
1040 | }; | |
1041 | ||
1042 | static void | |
1043 | set_memory_write_packet_size (char *args, int from_tty) | |
1044 | { | |
1045 | set_memory_packet_size (args, &memory_write_packet_config); | |
1046 | } | |
1047 | ||
1048 | static void | |
1049 | show_memory_write_packet_size (char *args, int from_tty) | |
1050 | { | |
1051 | show_memory_packet_size (&memory_write_packet_config); | |
1052 | } | |
1053 | ||
1054 | static long | |
1055 | get_memory_write_packet_size (void) | |
1056 | { | |
1057 | return get_memory_packet_size (&memory_write_packet_config); | |
1058 | } | |
1059 | ||
1060 | static struct memory_packet_config memory_read_packet_config = | |
1061 | { | |
1062 | "memory-read-packet-size", | |
1063 | }; | |
1064 | ||
1065 | static void | |
1066 | set_memory_read_packet_size (char *args, int from_tty) | |
1067 | { | |
1068 | set_memory_packet_size (args, &memory_read_packet_config); | |
1069 | } | |
1070 | ||
1071 | static void | |
1072 | show_memory_read_packet_size (char *args, int from_tty) | |
1073 | { | |
1074 | show_memory_packet_size (&memory_read_packet_config); | |
1075 | } | |
1076 | ||
1077 | static long | |
1078 | get_memory_read_packet_size (void) | |
1079 | { | |
1080 | long size = get_memory_packet_size (&memory_read_packet_config); | |
cf7f2e2d | 1081 | |
5796c8dc SS |
1082 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an |
1083 | extra buffer size argument before the memory read size can be | |
1084 | increased beyond this. */ | |
1085 | if (size > get_remote_packet_size ()) | |
1086 | size = get_remote_packet_size (); | |
1087 | return size; | |
1088 | } | |
1089 | ||
1090 | \f | |
1091 | /* Generic configuration support for packets the stub optionally | |
c50c785c | 1092 | supports. Allows the user to specify the use of the packet as well |
5796c8dc SS |
1093 | as allowing GDB to auto-detect support in the remote stub. */ |
1094 | ||
1095 | enum packet_support | |
1096 | { | |
1097 | PACKET_SUPPORT_UNKNOWN = 0, | |
1098 | PACKET_ENABLE, | |
1099 | PACKET_DISABLE | |
1100 | }; | |
1101 | ||
1102 | struct packet_config | |
1103 | { | |
1104 | const char *name; | |
1105 | const char *title; | |
25e4902b AHJ |
1106 | |
1107 | /* If auto, GDB auto-detects support for this packet or feature, | |
1108 | either through qSupported, or by trying the packet and looking | |
1109 | at the response. If true, GDB assumes the target supports this | |
1110 | packet. If false, the packet is disabled. Configs that don't | |
1111 | have an associated command always have this set to auto. */ | |
5796c8dc | 1112 | enum auto_boolean detect; |
25e4902b AHJ |
1113 | |
1114 | /* Does the target support this packet? */ | |
5796c8dc SS |
1115 | enum packet_support support; |
1116 | }; | |
1117 | ||
1118 | /* Analyze a packet's return value and update the packet config | |
1119 | accordingly. */ | |
1120 | ||
1121 | enum packet_result | |
1122 | { | |
1123 | PACKET_ERROR, | |
1124 | PACKET_OK, | |
1125 | PACKET_UNKNOWN | |
1126 | }; | |
1127 | ||
25e4902b AHJ |
1128 | static enum packet_support packet_config_support (struct packet_config *config); |
1129 | static enum packet_support packet_support (int packet); | |
5796c8dc SS |
1130 | |
1131 | static void | |
1132 | show_packet_config_cmd (struct packet_config *config) | |
1133 | { | |
1134 | char *support = "internal-error"; | |
cf7f2e2d | 1135 | |
25e4902b | 1136 | switch (packet_config_support (config)) |
5796c8dc SS |
1137 | { |
1138 | case PACKET_ENABLE: | |
1139 | support = "enabled"; | |
1140 | break; | |
1141 | case PACKET_DISABLE: | |
1142 | support = "disabled"; | |
1143 | break; | |
1144 | case PACKET_SUPPORT_UNKNOWN: | |
1145 | support = "unknown"; | |
1146 | break; | |
1147 | } | |
1148 | switch (config->detect) | |
1149 | { | |
1150 | case AUTO_BOOLEAN_AUTO: | |
c50c785c JM |
1151 | printf_filtered (_("Support for the `%s' packet " |
1152 | "is auto-detected, currently %s.\n"), | |
5796c8dc SS |
1153 | config->name, support); |
1154 | break; | |
1155 | case AUTO_BOOLEAN_TRUE: | |
1156 | case AUTO_BOOLEAN_FALSE: | |
1157 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), | |
1158 | config->name, support); | |
1159 | break; | |
1160 | } | |
1161 | } | |
1162 | ||
1163 | static void | |
1164 | add_packet_config_cmd (struct packet_config *config, const char *name, | |
1165 | const char *title, int legacy) | |
1166 | { | |
1167 | char *set_doc; | |
1168 | char *show_doc; | |
1169 | char *cmd_name; | |
1170 | ||
1171 | config->name = name; | |
1172 | config->title = title; | |
5796c8dc SS |
1173 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
1174 | name, title); | |
c50c785c JM |
1175 | show_doc = xstrprintf ("Show current use of remote " |
1176 | "protocol `%s' (%s) packet", | |
5796c8dc SS |
1177 | name, title); |
1178 | /* set/show TITLE-packet {auto,on,off} */ | |
1179 | cmd_name = xstrprintf ("%s-packet", title); | |
1180 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, | |
c50c785c JM |
1181 | &config->detect, set_doc, |
1182 | show_doc, NULL, /* help_doc */ | |
25e4902b | 1183 | NULL, |
5796c8dc SS |
1184 | show_remote_protocol_packet_cmd, |
1185 | &remote_set_cmdlist, &remote_show_cmdlist); | |
1186 | /* The command code copies the documentation strings. */ | |
1187 | xfree (set_doc); | |
1188 | xfree (show_doc); | |
1189 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ | |
1190 | if (legacy) | |
1191 | { | |
1192 | char *legacy_name; | |
cf7f2e2d | 1193 | |
5796c8dc SS |
1194 | legacy_name = xstrprintf ("%s-packet", name); |
1195 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, | |
1196 | &remote_set_cmdlist); | |
1197 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, | |
1198 | &remote_show_cmdlist); | |
1199 | } | |
1200 | } | |
1201 | ||
1202 | static enum packet_result | |
1203 | packet_check_result (const char *buf) | |
1204 | { | |
1205 | if (buf[0] != '\0') | |
1206 | { | |
1207 | /* The stub recognized the packet request. Check that the | |
1208 | operation succeeded. */ | |
1209 | if (buf[0] == 'E' | |
1210 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
1211 | && buf[3] == '\0') | |
1212 | /* "Enn" - definitly an error. */ | |
1213 | return PACKET_ERROR; | |
1214 | ||
1215 | /* Always treat "E." as an error. This will be used for | |
1216 | more verbose error messages, such as E.memtypes. */ | |
1217 | if (buf[0] == 'E' && buf[1] == '.') | |
1218 | return PACKET_ERROR; | |
1219 | ||
1220 | /* The packet may or may not be OK. Just assume it is. */ | |
1221 | return PACKET_OK; | |
1222 | } | |
1223 | else | |
1224 | /* The stub does not support the packet. */ | |
1225 | return PACKET_UNKNOWN; | |
1226 | } | |
1227 | ||
1228 | static enum packet_result | |
1229 | packet_ok (const char *buf, struct packet_config *config) | |
1230 | { | |
1231 | enum packet_result result; | |
1232 | ||
25e4902b AHJ |
1233 | if (config->detect != AUTO_BOOLEAN_TRUE |
1234 | && config->support == PACKET_DISABLE) | |
1235 | internal_error (__FILE__, __LINE__, | |
1236 | _("packet_ok: attempt to use a disabled packet")); | |
1237 | ||
5796c8dc SS |
1238 | result = packet_check_result (buf); |
1239 | switch (result) | |
1240 | { | |
1241 | case PACKET_OK: | |
1242 | case PACKET_ERROR: | |
1243 | /* The stub recognized the packet request. */ | |
25e4902b | 1244 | if (config->support == PACKET_SUPPORT_UNKNOWN) |
5796c8dc | 1245 | { |
5796c8dc SS |
1246 | if (remote_debug) |
1247 | fprintf_unfiltered (gdb_stdlog, | |
25e4902b AHJ |
1248 | "Packet %s (%s) is supported\n", |
1249 | config->name, config->title); | |
5796c8dc | 1250 | config->support = PACKET_ENABLE; |
5796c8dc SS |
1251 | } |
1252 | break; | |
1253 | case PACKET_UNKNOWN: | |
1254 | /* The stub does not support the packet. */ | |
25e4902b AHJ |
1255 | if (config->detect == AUTO_BOOLEAN_AUTO |
1256 | && config->support == PACKET_ENABLE) | |
5796c8dc | 1257 | { |
25e4902b AHJ |
1258 | /* If the stub previously indicated that the packet was |
1259 | supported then there is a protocol error. */ | |
1260 | error (_("Protocol error: %s (%s) conflicting enabled responses."), | |
1261 | config->name, config->title); | |
5796c8dc | 1262 | } |
25e4902b AHJ |
1263 | else if (config->detect == AUTO_BOOLEAN_TRUE) |
1264 | { | |
1265 | /* The user set it wrong. */ | |
1266 | error (_("Enabled packet %s (%s) not recognized by stub"), | |
1267 | config->name, config->title); | |
1268 | } | |
1269 | ||
1270 | if (remote_debug) | |
1271 | fprintf_unfiltered (gdb_stdlog, | |
1272 | "Packet %s (%s) is NOT supported\n", | |
1273 | config->name, config->title); | |
1274 | config->support = PACKET_DISABLE; | |
5796c8dc SS |
1275 | break; |
1276 | } | |
1277 | ||
1278 | return result; | |
1279 | } | |
1280 | ||
1281 | enum { | |
1282 | PACKET_vCont = 0, | |
1283 | PACKET_X, | |
1284 | PACKET_qSymbol, | |
1285 | PACKET_P, | |
1286 | PACKET_p, | |
1287 | PACKET_Z0, | |
1288 | PACKET_Z1, | |
1289 | PACKET_Z2, | |
1290 | PACKET_Z3, | |
1291 | PACKET_Z4, | |
25e4902b | 1292 | PACKET_vFile_setfs, |
5796c8dc SS |
1293 | PACKET_vFile_open, |
1294 | PACKET_vFile_pread, | |
1295 | PACKET_vFile_pwrite, | |
1296 | PACKET_vFile_close, | |
1297 | PACKET_vFile_unlink, | |
ef5ccd6c | 1298 | PACKET_vFile_readlink, |
25e4902b | 1299 | PACKET_vFile_fstat, |
5796c8dc SS |
1300 | PACKET_qXfer_auxv, |
1301 | PACKET_qXfer_features, | |
25e4902b | 1302 | PACKET_qXfer_exec_file, |
5796c8dc | 1303 | PACKET_qXfer_libraries, |
a45ae5f8 | 1304 | PACKET_qXfer_libraries_svr4, |
5796c8dc SS |
1305 | PACKET_qXfer_memory_map, |
1306 | PACKET_qXfer_spu_read, | |
1307 | PACKET_qXfer_spu_write, | |
1308 | PACKET_qXfer_osdata, | |
cf7f2e2d JM |
1309 | PACKET_qXfer_threads, |
1310 | PACKET_qXfer_statictrace_read, | |
c50c785c | 1311 | PACKET_qXfer_traceframe_info, |
ef5ccd6c | 1312 | PACKET_qXfer_uib, |
cf7f2e2d | 1313 | PACKET_qGetTIBAddr, |
5796c8dc SS |
1314 | PACKET_qGetTLSAddr, |
1315 | PACKET_qSupported, | |
25e4902b | 1316 | PACKET_qTStatus, |
5796c8dc | 1317 | PACKET_QPassSignals, |
ef5ccd6c | 1318 | PACKET_QProgramSignals, |
25e4902b | 1319 | PACKET_qCRC, |
5796c8dc SS |
1320 | PACKET_qSearch_memory, |
1321 | PACKET_vAttach, | |
1322 | PACKET_vRun, | |
1323 | PACKET_QStartNoAckMode, | |
1324 | PACKET_vKill, | |
1325 | PACKET_qXfer_siginfo_read, | |
1326 | PACKET_qXfer_siginfo_write, | |
1327 | PACKET_qAttached, | |
25e4902b AHJ |
1328 | |
1329 | /* Support for conditional tracepoints. */ | |
5796c8dc | 1330 | PACKET_ConditionalTracepoints, |
25e4902b AHJ |
1331 | |
1332 | /* Support for target-side breakpoint conditions. */ | |
ef5ccd6c | 1333 | PACKET_ConditionalBreakpoints, |
25e4902b AHJ |
1334 | |
1335 | /* Support for target-side breakpoint commands. */ | |
ef5ccd6c | 1336 | PACKET_BreakpointCommands, |
25e4902b AHJ |
1337 | |
1338 | /* Support for fast tracepoints. */ | |
cf7f2e2d | 1339 | PACKET_FastTracepoints, |
25e4902b AHJ |
1340 | |
1341 | /* Support for static tracepoints. */ | |
cf7f2e2d | 1342 | PACKET_StaticTracepoints, |
25e4902b AHJ |
1343 | |
1344 | /* Support for installing tracepoints while a trace experiment is | |
1345 | running. */ | |
a45ae5f8 | 1346 | PACKET_InstallInTrace, |
25e4902b | 1347 | |
5796c8dc SS |
1348 | PACKET_bc, |
1349 | PACKET_bs, | |
cf7f2e2d JM |
1350 | PACKET_TracepointSource, |
1351 | PACKET_QAllow, | |
a45ae5f8 JM |
1352 | PACKET_qXfer_fdpic, |
1353 | PACKET_QDisableRandomization, | |
ef5ccd6c JM |
1354 | PACKET_QAgent, |
1355 | PACKET_QTBuffer_size, | |
1356 | PACKET_Qbtrace_off, | |
1357 | PACKET_Qbtrace_bts, | |
25e4902b | 1358 | PACKET_Qbtrace_pt, |
ef5ccd6c | 1359 | PACKET_qXfer_btrace, |
25e4902b AHJ |
1360 | |
1361 | /* Support for the QNonStop packet. */ | |
1362 | PACKET_QNonStop, | |
1363 | ||
1364 | /* Support for multi-process extensions. */ | |
1365 | PACKET_multiprocess_feature, | |
1366 | ||
1367 | /* Support for enabling and disabling tracepoints while a trace | |
1368 | experiment is running. */ | |
1369 | PACKET_EnableDisableTracepoints_feature, | |
1370 | ||
1371 | /* Support for collecting strings using the tracenz bytecode. */ | |
1372 | PACKET_tracenz_feature, | |
1373 | ||
1374 | /* Support for continuing to run a trace experiment while GDB is | |
1375 | disconnected. */ | |
1376 | PACKET_DisconnectedTracing_feature, | |
1377 | ||
1378 | /* Support for qXfer:libraries-svr4:read with a non-empty annex. */ | |
1379 | PACKET_augmented_libraries_svr4_read_feature, | |
1380 | ||
1381 | /* Support for the qXfer:btrace-conf:read packet. */ | |
1382 | PACKET_qXfer_btrace_conf, | |
1383 | ||
1384 | /* Support for the Qbtrace-conf:bts:size packet. */ | |
1385 | PACKET_Qbtrace_conf_bts_size, | |
1386 | ||
1387 | /* Support for swbreak+ feature. */ | |
1388 | PACKET_swbreak_feature, | |
1389 | ||
1390 | /* Support for hwbreak+ feature. */ | |
1391 | PACKET_hwbreak_feature, | |
1392 | ||
1393 | /* Support for fork events. */ | |
1394 | PACKET_fork_event_feature, | |
1395 | ||
1396 | /* Support for vfork events. */ | |
1397 | PACKET_vfork_event_feature, | |
1398 | ||
1399 | /* Support for the Qbtrace-conf:pt:size packet. */ | |
1400 | PACKET_Qbtrace_conf_pt_size, | |
1401 | ||
5796c8dc SS |
1402 | PACKET_MAX |
1403 | }; | |
1404 | ||
1405 | static struct packet_config remote_protocol_packets[PACKET_MAX]; | |
1406 | ||
25e4902b AHJ |
1407 | /* Returns the packet's corresponding "set remote foo-packet" command |
1408 | state. See struct packet_config for more details. */ | |
1409 | ||
1410 | static enum auto_boolean | |
1411 | packet_set_cmd_state (int packet) | |
5796c8dc | 1412 | { |
25e4902b AHJ |
1413 | return remote_protocol_packets[packet].detect; |
1414 | } | |
5796c8dc | 1415 | |
25e4902b AHJ |
1416 | /* Returns whether a given packet or feature is supported. This takes |
1417 | into account the state of the corresponding "set remote foo-packet" | |
1418 | command, which may be used to bypass auto-detection. */ | |
1419 | ||
1420 | static enum packet_support | |
1421 | packet_config_support (struct packet_config *config) | |
1422 | { | |
1423 | switch (config->detect) | |
5796c8dc | 1424 | { |
25e4902b AHJ |
1425 | case AUTO_BOOLEAN_TRUE: |
1426 | return PACKET_ENABLE; | |
1427 | case AUTO_BOOLEAN_FALSE: | |
1428 | return PACKET_DISABLE; | |
1429 | case AUTO_BOOLEAN_AUTO: | |
1430 | return config->support; | |
1431 | default: | |
1432 | gdb_assert_not_reached (_("bad switch")); | |
5796c8dc | 1433 | } |
25e4902b AHJ |
1434 | } |
1435 | ||
1436 | /* Same as packet_config_support, but takes the packet's enum value as | |
1437 | argument. */ | |
1438 | ||
1439 | static enum packet_support | |
1440 | packet_support (int packet) | |
1441 | { | |
1442 | struct packet_config *config = &remote_protocol_packets[packet]; | |
1443 | ||
1444 | return packet_config_support (config); | |
5796c8dc SS |
1445 | } |
1446 | ||
1447 | static void | |
1448 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, | |
1449 | struct cmd_list_element *c, | |
1450 | const char *value) | |
1451 | { | |
1452 | struct packet_config *packet; | |
1453 | ||
1454 | for (packet = remote_protocol_packets; | |
1455 | packet < &remote_protocol_packets[PACKET_MAX]; | |
1456 | packet++) | |
1457 | { | |
1458 | if (&packet->detect == c->var) | |
1459 | { | |
1460 | show_packet_config_cmd (packet); | |
1461 | return; | |
1462 | } | |
1463 | } | |
c50c785c | 1464 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
5796c8dc SS |
1465 | c->name); |
1466 | } | |
1467 | ||
1468 | /* Should we try one of the 'Z' requests? */ | |
1469 | ||
1470 | enum Z_packet_type | |
1471 | { | |
1472 | Z_PACKET_SOFTWARE_BP, | |
1473 | Z_PACKET_HARDWARE_BP, | |
1474 | Z_PACKET_WRITE_WP, | |
1475 | Z_PACKET_READ_WP, | |
1476 | Z_PACKET_ACCESS_WP, | |
1477 | NR_Z_PACKET_TYPES | |
1478 | }; | |
1479 | ||
1480 | /* For compatibility with older distributions. Provide a ``set remote | |
1481 | Z-packet ...'' command that updates all the Z packet types. */ | |
1482 | ||
1483 | static enum auto_boolean remote_Z_packet_detect; | |
1484 | ||
1485 | static void | |
1486 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, | |
1487 | struct cmd_list_element *c) | |
1488 | { | |
1489 | int i; | |
cf7f2e2d | 1490 | |
5796c8dc | 1491 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
25e4902b | 1492 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
5796c8dc SS |
1493 | } |
1494 | ||
1495 | static void | |
1496 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, | |
1497 | struct cmd_list_element *c, | |
1498 | const char *value) | |
1499 | { | |
1500 | int i; | |
cf7f2e2d | 1501 | |
5796c8dc SS |
1502 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
1503 | { | |
1504 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); | |
1505 | } | |
1506 | } | |
1507 | ||
25e4902b AHJ |
1508 | /* Returns true if the multi-process extensions are in effect. */ |
1509 | ||
1510 | static int | |
1511 | remote_multi_process_p (struct remote_state *rs) | |
1512 | { | |
1513 | return packet_support (PACKET_multiprocess_feature) == PACKET_ENABLE; | |
1514 | } | |
1515 | ||
1516 | /* Returns true if fork events are supported. */ | |
1517 | ||
1518 | static int | |
1519 | remote_fork_event_p (struct remote_state *rs) | |
1520 | { | |
1521 | return packet_support (PACKET_fork_event_feature) == PACKET_ENABLE; | |
1522 | } | |
1523 | ||
1524 | /* Returns true if vfork events are supported. */ | |
1525 | ||
1526 | static int | |
1527 | remote_vfork_event_p (struct remote_state *rs) | |
1528 | { | |
1529 | return packet_support (PACKET_vfork_event_feature) == PACKET_ENABLE; | |
1530 | } | |
1531 | ||
1532 | /* Insert fork catchpoint target routine. If fork events are enabled | |
1533 | then return success, nothing more to do. */ | |
1534 | ||
1535 | static int | |
1536 | remote_insert_fork_catchpoint (struct target_ops *ops, int pid) | |
1537 | { | |
1538 | struct remote_state *rs = get_remote_state (); | |
1539 | ||
1540 | return !remote_fork_event_p (rs); | |
1541 | } | |
1542 | ||
1543 | /* Remove fork catchpoint target routine. Nothing to do, just | |
1544 | return success. */ | |
1545 | ||
1546 | static int | |
1547 | remote_remove_fork_catchpoint (struct target_ops *ops, int pid) | |
1548 | { | |
1549 | return 0; | |
1550 | } | |
1551 | ||
1552 | /* Insert vfork catchpoint target routine. If vfork events are enabled | |
1553 | then return success, nothing more to do. */ | |
1554 | ||
1555 | static int | |
1556 | remote_insert_vfork_catchpoint (struct target_ops *ops, int pid) | |
1557 | { | |
1558 | struct remote_state *rs = get_remote_state (); | |
1559 | ||
1560 | return !remote_vfork_event_p (rs); | |
1561 | } | |
5796c8dc | 1562 | |
25e4902b AHJ |
1563 | /* Remove vfork catchpoint target routine. Nothing to do, just |
1564 | return success. */ | |
5796c8dc | 1565 | |
25e4902b AHJ |
1566 | static int |
1567 | remote_remove_vfork_catchpoint (struct target_ops *ops, int pid) | |
1568 | { | |
1569 | return 0; | |
1570 | } | |
5796c8dc SS |
1571 | |
1572 | /* Tokens for use by the asynchronous signal handlers for SIGINT. */ | |
25e4902b AHJ |
1573 | static struct async_signal_handler *async_sigint_remote_twice_token; |
1574 | static struct async_signal_handler *async_sigint_remote_token; | |
5796c8dc SS |
1575 | |
1576 | \f | |
1577 | /* Asynchronous signal handle registered as event loop source for | |
1578 | when we have pending events ready to be passed to the core. */ | |
1579 | ||
1580 | static struct async_event_handler *remote_async_inferior_event_token; | |
1581 | ||
5796c8dc SS |
1582 | \f |
1583 | ||
1584 | static ptid_t magic_null_ptid; | |
1585 | static ptid_t not_sent_ptid; | |
1586 | static ptid_t any_thread_ptid; | |
1587 | ||
5796c8dc SS |
1588 | /* Find out if the stub attached to PID (and hence GDB should offer to |
1589 | detach instead of killing it when bailing out). */ | |
1590 | ||
1591 | static int | |
1592 | remote_query_attached (int pid) | |
1593 | { | |
1594 | struct remote_state *rs = get_remote_state (); | |
ef5ccd6c | 1595 | size_t size = get_remote_packet_size (); |
5796c8dc | 1596 | |
25e4902b | 1597 | if (packet_support (PACKET_qAttached) == PACKET_DISABLE) |
5796c8dc SS |
1598 | return 0; |
1599 | ||
1600 | if (remote_multi_process_p (rs)) | |
ef5ccd6c | 1601 | xsnprintf (rs->buf, size, "qAttached:%x", pid); |
5796c8dc | 1602 | else |
ef5ccd6c | 1603 | xsnprintf (rs->buf, size, "qAttached"); |
5796c8dc SS |
1604 | |
1605 | putpkt (rs->buf); | |
1606 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1607 | ||
1608 | switch (packet_ok (rs->buf, | |
1609 | &remote_protocol_packets[PACKET_qAttached])) | |
1610 | { | |
1611 | case PACKET_OK: | |
1612 | if (strcmp (rs->buf, "1") == 0) | |
1613 | return 1; | |
1614 | break; | |
1615 | case PACKET_ERROR: | |
1616 | warning (_("Remote failure reply: %s"), rs->buf); | |
1617 | break; | |
1618 | case PACKET_UNKNOWN: | |
1619 | break; | |
1620 | } | |
1621 | ||
1622 | return 0; | |
1623 | } | |
1624 | ||
ef5ccd6c JM |
1625 | /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID |
1626 | has been invented by GDB, instead of reported by the target. Since | |
1627 | we can be connected to a remote system before before knowing about | |
1628 | any inferior, mark the target with execution when we find the first | |
1629 | inferior. If ATTACHED is 1, then we had just attached to this | |
1630 | inferior. If it is 0, then we just created this inferior. If it | |
1631 | is -1, then try querying the remote stub to find out if it had | |
25e4902b AHJ |
1632 | attached to the inferior or not. If TRY_OPEN_EXEC is true then |
1633 | attempt to open this inferior's executable as the main executable | |
1634 | if no main executable is open already. */ | |
5796c8dc SS |
1635 | |
1636 | static struct inferior * | |
25e4902b AHJ |
1637 | remote_add_inferior (int fake_pid_p, int pid, int attached, |
1638 | int try_open_exec) | |
5796c8dc SS |
1639 | { |
1640 | struct inferior *inf; | |
1641 | ||
1642 | /* Check whether this process we're learning about is to be | |
1643 | considered attached, or if is to be considered to have been | |
1644 | spawned by the stub. */ | |
1645 | if (attached == -1) | |
1646 | attached = remote_query_attached (pid); | |
1647 | ||
ef5ccd6c | 1648 | if (gdbarch_has_global_solist (target_gdbarch ())) |
cf7f2e2d JM |
1649 | { |
1650 | /* If the target shares code across all inferiors, then every | |
1651 | attach adds a new inferior. */ | |
1652 | inf = add_inferior (pid); | |
1653 | ||
1654 | /* ... and every inferior is bound to the same program space. | |
1655 | However, each inferior may still have its own address | |
1656 | space. */ | |
1657 | inf->aspace = maybe_new_address_space (); | |
1658 | inf->pspace = current_program_space; | |
1659 | } | |
1660 | else | |
1661 | { | |
1662 | /* In the traditional debugging scenario, there's a 1-1 match | |
1663 | between program/address spaces. We simply bind the inferior | |
1664 | to the program space's address space. */ | |
1665 | inf = current_inferior (); | |
1666 | inferior_appeared (inf, pid); | |
1667 | } | |
5796c8dc SS |
1668 | |
1669 | inf->attach_flag = attached; | |
ef5ccd6c | 1670 | inf->fake_pid_p = fake_pid_p; |
5796c8dc | 1671 | |
25e4902b AHJ |
1672 | /* If no main executable is currently open then attempt to |
1673 | open the file that was executed to create this inferior. */ | |
1674 | if (try_open_exec && get_exec_file (0) == NULL) | |
1675 | exec_file_locate_attach (pid, 1); | |
1676 | ||
5796c8dc SS |
1677 | return inf; |
1678 | } | |
1679 | ||
1680 | /* Add thread PTID to GDB's thread list. Tag it as executing/running | |
1681 | according to RUNNING. */ | |
1682 | ||
1683 | static void | |
1684 | remote_add_thread (ptid_t ptid, int running) | |
1685 | { | |
25e4902b AHJ |
1686 | struct remote_state *rs = get_remote_state (); |
1687 | ||
1688 | /* GDB historically didn't pull threads in the initial connection | |
1689 | setup. If the remote target doesn't even have a concept of | |
1690 | threads (e.g., a bare-metal target), even if internally we | |
1691 | consider that a single-threaded target, mentioning a new thread | |
1692 | might be confusing to the user. Be silent then, preserving the | |
1693 | age old behavior. */ | |
1694 | if (rs->starting_up) | |
1695 | add_thread_silent (ptid); | |
1696 | else | |
1697 | add_thread (ptid); | |
5796c8dc SS |
1698 | |
1699 | set_executing (ptid, running); | |
1700 | set_running (ptid, running); | |
1701 | } | |
1702 | ||
1703 | /* Come here when we learn about a thread id from the remote target. | |
1704 | It may be the first time we hear about such thread, so take the | |
1705 | opportunity to add it to GDB's thread list. In case this is the | |
1706 | first time we're noticing its corresponding inferior, add it to | |
1707 | GDB's inferior list as well. */ | |
1708 | ||
1709 | static void | |
1710 | remote_notice_new_inferior (ptid_t currthread, int running) | |
1711 | { | |
1712 | /* If this is a new thread, add it to GDB's thread list. | |
1713 | If we leave it up to WFI to do this, bad things will happen. */ | |
1714 | ||
1715 | if (in_thread_list (currthread) && is_exited (currthread)) | |
1716 | { | |
1717 | /* We're seeing an event on a thread id we knew had exited. | |
1718 | This has to be a new thread reusing the old id. Add it. */ | |
1719 | remote_add_thread (currthread, running); | |
1720 | return; | |
1721 | } | |
1722 | ||
1723 | if (!in_thread_list (currthread)) | |
1724 | { | |
1725 | struct inferior *inf = NULL; | |
1726 | int pid = ptid_get_pid (currthread); | |
1727 | ||
1728 | if (ptid_is_pid (inferior_ptid) | |
1729 | && pid == ptid_get_pid (inferior_ptid)) | |
1730 | { | |
1731 | /* inferior_ptid has no thread member yet. This can happen | |
1732 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
1733 | stub doesn't support qC. This is the first stop reported | |
1734 | after an attach, so this is the main thread. Update the | |
1735 | ptid in the thread list. */ | |
1736 | if (in_thread_list (pid_to_ptid (pid))) | |
1737 | thread_change_ptid (inferior_ptid, currthread); | |
1738 | else | |
1739 | { | |
1740 | remote_add_thread (currthread, running); | |
1741 | inferior_ptid = currthread; | |
1742 | } | |
cf7f2e2d | 1743 | return; |
5796c8dc SS |
1744 | } |
1745 | ||
1746 | if (ptid_equal (magic_null_ptid, inferior_ptid)) | |
1747 | { | |
1748 | /* inferior_ptid is not set yet. This can happen with the | |
1749 | vRun -> remote_wait,"TAAthread:" path if the stub | |
1750 | doesn't support qC. This is the first stop reported | |
1751 | after an attach, so this is the main thread. Update the | |
1752 | ptid in the thread list. */ | |
cf7f2e2d | 1753 | thread_change_ptid (inferior_ptid, currthread); |
5796c8dc SS |
1754 | return; |
1755 | } | |
1756 | ||
1757 | /* When connecting to a target remote, or to a target | |
1758 | extended-remote which already was debugging an inferior, we | |
1759 | may not know about it yet. Add it before adding its child | |
1760 | thread, so notifications are emitted in a sensible order. */ | |
1761 | if (!in_inferior_list (ptid_get_pid (currthread))) | |
ef5ccd6c JM |
1762 | { |
1763 | struct remote_state *rs = get_remote_state (); | |
1764 | int fake_pid_p = !remote_multi_process_p (rs); | |
1765 | ||
1766 | inf = remote_add_inferior (fake_pid_p, | |
25e4902b | 1767 | ptid_get_pid (currthread), -1, 1); |
ef5ccd6c | 1768 | } |
5796c8dc SS |
1769 | |
1770 | /* This is really a new thread. Add it. */ | |
1771 | remote_add_thread (currthread, running); | |
1772 | ||
1773 | /* If we found a new inferior, let the common code do whatever | |
1774 | it needs to with it (e.g., read shared libraries, insert | |
25e4902b AHJ |
1775 | breakpoints), unless we're just setting up an all-stop |
1776 | connection. */ | |
5796c8dc | 1777 | if (inf != NULL) |
25e4902b AHJ |
1778 | { |
1779 | struct remote_state *rs = get_remote_state (); | |
1780 | ||
1781 | if (non_stop || !rs->starting_up) | |
1782 | notice_new_inferior (currthread, running, 0); | |
1783 | } | |
5796c8dc SS |
1784 | } |
1785 | } | |
1786 | ||
cf7f2e2d JM |
1787 | /* Return the private thread data, creating it if necessary. */ |
1788 | ||
ef5ccd6c | 1789 | static struct private_thread_info * |
cf7f2e2d JM |
1790 | demand_private_info (ptid_t ptid) |
1791 | { | |
1792 | struct thread_info *info = find_thread_ptid (ptid); | |
1793 | ||
1794 | gdb_assert (info); | |
1795 | ||
25e4902b | 1796 | if (!info->priv) |
cf7f2e2d | 1797 | { |
25e4902b | 1798 | info->priv = xmalloc (sizeof (*(info->priv))); |
cf7f2e2d | 1799 | info->private_dtor = free_private_thread_info; |
25e4902b AHJ |
1800 | info->priv->core = -1; |
1801 | info->priv->extra = 0; | |
cf7f2e2d JM |
1802 | } |
1803 | ||
25e4902b | 1804 | return info->priv; |
cf7f2e2d JM |
1805 | } |
1806 | ||
5796c8dc SS |
1807 | /* Call this function as a result of |
1808 | 1) A halt indication (T packet) containing a thread id | |
1809 | 2) A direct query of currthread | |
c50c785c | 1810 | 3) Successful execution of set thread */ |
5796c8dc SS |
1811 | |
1812 | static void | |
25e4902b | 1813 | record_currthread (struct remote_state *rs, ptid_t currthread) |
5796c8dc | 1814 | { |
25e4902b | 1815 | rs->general_thread = currthread; |
5796c8dc SS |
1816 | } |
1817 | ||
5796c8dc SS |
1818 | /* If 'QPassSignals' is supported, tell the remote stub what signals |
1819 | it can simply pass through to the inferior without reporting. */ | |
1820 | ||
1821 | static void | |
25e4902b AHJ |
1822 | remote_pass_signals (struct target_ops *self, |
1823 | int numsigs, unsigned char *pass_signals) | |
5796c8dc | 1824 | { |
25e4902b | 1825 | if (packet_support (PACKET_QPassSignals) != PACKET_DISABLE) |
5796c8dc SS |
1826 | { |
1827 | char *pass_packet, *p; | |
5796c8dc | 1828 | int count = 0, i; |
25e4902b | 1829 | struct remote_state *rs = get_remote_state (); |
5796c8dc SS |
1830 | |
1831 | gdb_assert (numsigs < 256); | |
1832 | for (i = 0; i < numsigs; i++) | |
1833 | { | |
a45ae5f8 | 1834 | if (pass_signals[i]) |
5796c8dc SS |
1835 | count++; |
1836 | } | |
1837 | pass_packet = xmalloc (count * 3 + strlen ("QPassSignals:") + 1); | |
1838 | strcpy (pass_packet, "QPassSignals:"); | |
1839 | p = pass_packet + strlen (pass_packet); | |
1840 | for (i = 0; i < numsigs; i++) | |
1841 | { | |
a45ae5f8 | 1842 | if (pass_signals[i]) |
5796c8dc SS |
1843 | { |
1844 | if (i >= 16) | |
1845 | *p++ = tohex (i >> 4); | |
1846 | *p++ = tohex (i & 15); | |
1847 | if (count) | |
1848 | *p++ = ';'; | |
1849 | else | |
1850 | break; | |
1851 | count--; | |
1852 | } | |
1853 | } | |
1854 | *p = 0; | |
25e4902b | 1855 | if (!rs->last_pass_packet || strcmp (rs->last_pass_packet, pass_packet)) |
5796c8dc | 1856 | { |
5796c8dc SS |
1857 | putpkt (pass_packet); |
1858 | getpkt (&rs->buf, &rs->buf_size, 0); | |
25e4902b AHJ |
1859 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QPassSignals]); |
1860 | if (rs->last_pass_packet) | |
1861 | xfree (rs->last_pass_packet); | |
1862 | rs->last_pass_packet = pass_packet; | |
5796c8dc SS |
1863 | } |
1864 | else | |
1865 | xfree (pass_packet); | |
1866 | } | |
1867 | } | |
1868 | ||
ef5ccd6c JM |
1869 | /* If 'QProgramSignals' is supported, tell the remote stub what |
1870 | signals it should pass through to the inferior when detaching. */ | |
1871 | ||
1872 | static void | |
25e4902b AHJ |
1873 | remote_program_signals (struct target_ops *self, |
1874 | int numsigs, unsigned char *signals) | |
ef5ccd6c | 1875 | { |
25e4902b | 1876 | if (packet_support (PACKET_QProgramSignals) != PACKET_DISABLE) |
ef5ccd6c JM |
1877 | { |
1878 | char *packet, *p; | |
1879 | int count = 0, i; | |
25e4902b | 1880 | struct remote_state *rs = get_remote_state (); |
ef5ccd6c JM |
1881 | |
1882 | gdb_assert (numsigs < 256); | |
1883 | for (i = 0; i < numsigs; i++) | |
1884 | { | |
1885 | if (signals[i]) | |
1886 | count++; | |
1887 | } | |
1888 | packet = xmalloc (count * 3 + strlen ("QProgramSignals:") + 1); | |
1889 | strcpy (packet, "QProgramSignals:"); | |
1890 | p = packet + strlen (packet); | |
1891 | for (i = 0; i < numsigs; i++) | |
1892 | { | |
1893 | if (signal_pass_state (i)) | |
1894 | { | |
1895 | if (i >= 16) | |
1896 | *p++ = tohex (i >> 4); | |
1897 | *p++ = tohex (i & 15); | |
1898 | if (count) | |
1899 | *p++ = ';'; | |
1900 | else | |
1901 | break; | |
1902 | count--; | |
1903 | } | |
1904 | } | |
1905 | *p = 0; | |
25e4902b AHJ |
1906 | if (!rs->last_program_signals_packet |
1907 | || strcmp (rs->last_program_signals_packet, packet) != 0) | |
ef5ccd6c | 1908 | { |
ef5ccd6c JM |
1909 | putpkt (packet); |
1910 | getpkt (&rs->buf, &rs->buf_size, 0); | |
25e4902b AHJ |
1911 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QProgramSignals]); |
1912 | xfree (rs->last_program_signals_packet); | |
1913 | rs->last_program_signals_packet = packet; | |
ef5ccd6c JM |
1914 | } |
1915 | else | |
1916 | xfree (packet); | |
1917 | } | |
1918 | } | |
1919 | ||
5796c8dc SS |
1920 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
1921 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
1922 | thread. If GEN is set, set the general thread, if not, then set | |
1923 | the step/continue thread. */ | |
1924 | static void | |
1925 | set_thread (struct ptid ptid, int gen) | |
1926 | { | |
1927 | struct remote_state *rs = get_remote_state (); | |
25e4902b | 1928 | ptid_t state = gen ? rs->general_thread : rs->continue_thread; |
5796c8dc SS |
1929 | char *buf = rs->buf; |
1930 | char *endbuf = rs->buf + get_remote_packet_size (); | |
1931 | ||
1932 | if (ptid_equal (state, ptid)) | |
1933 | return; | |
1934 | ||
1935 | *buf++ = 'H'; | |
1936 | *buf++ = gen ? 'g' : 'c'; | |
1937 | if (ptid_equal (ptid, magic_null_ptid)) | |
1938 | xsnprintf (buf, endbuf - buf, "0"); | |
1939 | else if (ptid_equal (ptid, any_thread_ptid)) | |
1940 | xsnprintf (buf, endbuf - buf, "0"); | |
1941 | else if (ptid_equal (ptid, minus_one_ptid)) | |
1942 | xsnprintf (buf, endbuf - buf, "-1"); | |
1943 | else | |
1944 | write_ptid (buf, endbuf, ptid); | |
1945 | putpkt (rs->buf); | |
1946 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1947 | if (gen) | |
25e4902b | 1948 | rs->general_thread = ptid; |
5796c8dc | 1949 | else |
25e4902b | 1950 | rs->continue_thread = ptid; |
5796c8dc SS |
1951 | } |
1952 | ||
1953 | static void | |
1954 | set_general_thread (struct ptid ptid) | |
1955 | { | |
1956 | set_thread (ptid, 1); | |
1957 | } | |
1958 | ||
1959 | static void | |
1960 | set_continue_thread (struct ptid ptid) | |
1961 | { | |
1962 | set_thread (ptid, 0); | |
1963 | } | |
1964 | ||
1965 | /* Change the remote current process. Which thread within the process | |
1966 | ends up selected isn't important, as long as it is the same process | |
1967 | as what INFERIOR_PTID points to. | |
1968 | ||
1969 | This comes from that fact that there is no explicit notion of | |
1970 | "selected process" in the protocol. The selected process for | |
1971 | general operations is the process the selected general thread | |
1972 | belongs to. */ | |
1973 | ||
1974 | static void | |
1975 | set_general_process (void) | |
1976 | { | |
1977 | struct remote_state *rs = get_remote_state (); | |
1978 | ||
1979 | /* If the remote can't handle multiple processes, don't bother. */ | |
ef5ccd6c | 1980 | if (!rs->extended || !remote_multi_process_p (rs)) |
5796c8dc SS |
1981 | return; |
1982 | ||
1983 | /* We only need to change the remote current thread if it's pointing | |
1984 | at some other process. */ | |
25e4902b | 1985 | if (ptid_get_pid (rs->general_thread) != ptid_get_pid (inferior_ptid)) |
5796c8dc SS |
1986 | set_general_thread (inferior_ptid); |
1987 | } | |
1988 | ||
1989 | \f | |
25e4902b AHJ |
1990 | /* Return nonzero if this is the main thread that we made up ourselves |
1991 | to model non-threaded targets as single-threaded. */ | |
5796c8dc SS |
1992 | |
1993 | static int | |
25e4902b | 1994 | remote_thread_always_alive (struct target_ops *ops, ptid_t ptid) |
5796c8dc SS |
1995 | { |
1996 | struct remote_state *rs = get_remote_state (); | |
1997 | char *p, *endp; | |
1998 | ||
1999 | if (ptid_equal (ptid, magic_null_ptid)) | |
2000 | /* The main thread is always alive. */ | |
2001 | return 1; | |
2002 | ||
25e4902b | 2003 | if (ptid_get_pid (ptid) != 0 && ptid_get_lwp (ptid) == 0) |
5796c8dc SS |
2004 | /* The main thread is always alive. This can happen after a |
2005 | vAttach, if the remote side doesn't support | |
2006 | multi-threading. */ | |
2007 | return 1; | |
2008 | ||
25e4902b AHJ |
2009 | return 0; |
2010 | } | |
2011 | ||
2012 | /* Return nonzero if the thread PTID is still alive on the remote | |
2013 | system. */ | |
2014 | ||
2015 | static int | |
2016 | remote_thread_alive (struct target_ops *ops, ptid_t ptid) | |
2017 | { | |
2018 | struct remote_state *rs = get_remote_state (); | |
2019 | char *p, *endp; | |
2020 | ||
2021 | /* Check if this is a thread that we made up ourselves to model | |
2022 | non-threaded targets as single-threaded. */ | |
2023 | if (remote_thread_always_alive (ops, ptid)) | |
2024 | return 1; | |
2025 | ||
5796c8dc SS |
2026 | p = rs->buf; |
2027 | endp = rs->buf + get_remote_packet_size (); | |
2028 | ||
2029 | *p++ = 'T'; | |
2030 | write_ptid (p, endp, ptid); | |
2031 | ||
2032 | putpkt (rs->buf); | |
2033 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2034 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); | |
2035 | } | |
2036 | ||
2037 | /* About these extended threadlist and threadinfo packets. They are | |
2038 | variable length packets but, the fields within them are often fixed | |
2039 | length. They are redundent enough to send over UDP as is the | |
2040 | remote protocol in general. There is a matching unit test module | |
2041 | in libstub. */ | |
2042 | ||
5796c8dc | 2043 | /* WARNING: This threadref data structure comes from the remote O.S., |
c50c785c | 2044 | libstub protocol encoding, and remote.c. It is not particularly |
5796c8dc SS |
2045 | changable. */ |
2046 | ||
2047 | /* Right now, the internal structure is int. We want it to be bigger. | |
c50c785c | 2048 | Plan to fix this. */ |
5796c8dc SS |
2049 | |
2050 | typedef int gdb_threadref; /* Internal GDB thread reference. */ | |
2051 | ||
2052 | /* gdb_ext_thread_info is an internal GDB data structure which is | |
2053 | equivalent to the reply of the remote threadinfo packet. */ | |
2054 | ||
2055 | struct gdb_ext_thread_info | |
2056 | { | |
2057 | threadref threadid; /* External form of thread reference. */ | |
2058 | int active; /* Has state interesting to GDB? | |
2059 | regs, stack. */ | |
2060 | char display[256]; /* Brief state display, name, | |
2061 | blocked/suspended. */ | |
2062 | char shortname[32]; /* To be used to name threads. */ | |
2063 | char more_display[256]; /* Long info, statistics, queue depth, | |
2064 | whatever. */ | |
2065 | }; | |
2066 | ||
2067 | /* The volume of remote transfers can be limited by submitting | |
2068 | a mask containing bits specifying the desired information. | |
2069 | Use a union of these values as the 'selection' parameter to | |
c50c785c | 2070 | get_thread_info. FIXME: Make these TAG names more thread specific. */ |
5796c8dc SS |
2071 | |
2072 | #define TAG_THREADID 1 | |
2073 | #define TAG_EXISTS 2 | |
2074 | #define TAG_DISPLAY 4 | |
2075 | #define TAG_THREADNAME 8 | |
2076 | #define TAG_MOREDISPLAY 16 | |
2077 | ||
2078 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) | |
2079 | ||
5796c8dc SS |
2080 | static char *unpack_nibble (char *buf, int *val); |
2081 | ||
5796c8dc SS |
2082 | static char *unpack_byte (char *buf, int *value); |
2083 | ||
2084 | static char *pack_int (char *buf, int value); | |
2085 | ||
2086 | static char *unpack_int (char *buf, int *value); | |
2087 | ||
2088 | static char *unpack_string (char *src, char *dest, int length); | |
2089 | ||
2090 | static char *pack_threadid (char *pkt, threadref *id); | |
2091 | ||
2092 | static char *unpack_threadid (char *inbuf, threadref *id); | |
2093 | ||
2094 | void int_to_threadref (threadref *id, int value); | |
2095 | ||
2096 | static int threadref_to_int (threadref *ref); | |
2097 | ||
2098 | static void copy_threadref (threadref *dest, threadref *src); | |
2099 | ||
2100 | static int threadmatch (threadref *dest, threadref *src); | |
2101 | ||
2102 | static char *pack_threadinfo_request (char *pkt, int mode, | |
2103 | threadref *id); | |
2104 | ||
2105 | static int remote_unpack_thread_info_response (char *pkt, | |
2106 | threadref *expectedref, | |
2107 | struct gdb_ext_thread_info | |
2108 | *info); | |
2109 | ||
2110 | ||
2111 | static int remote_get_threadinfo (threadref *threadid, | |
2112 | int fieldset, /*TAG mask */ | |
2113 | struct gdb_ext_thread_info *info); | |
2114 | ||
2115 | static char *pack_threadlist_request (char *pkt, int startflag, | |
2116 | int threadcount, | |
2117 | threadref *nextthread); | |
2118 | ||
2119 | static int parse_threadlist_response (char *pkt, | |
2120 | int result_limit, | |
2121 | threadref *original_echo, | |
2122 | threadref *resultlist, | |
2123 | int *doneflag); | |
2124 | ||
2125 | static int remote_get_threadlist (int startflag, | |
2126 | threadref *nextthread, | |
2127 | int result_limit, | |
2128 | int *done, | |
2129 | int *result_count, | |
2130 | threadref *threadlist); | |
2131 | ||
2132 | typedef int (*rmt_thread_action) (threadref *ref, void *context); | |
2133 | ||
2134 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, | |
2135 | void *context, int looplimit); | |
2136 | ||
2137 | static int remote_newthread_step (threadref *ref, void *context); | |
2138 | ||
2139 | ||
2140 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
2141 | buffer we're allowed to write to. Returns | |
2142 | BUF+CHARACTERS_WRITTEN. */ | |
2143 | ||
2144 | static char * | |
2145 | write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
2146 | { | |
2147 | int pid, tid; | |
2148 | struct remote_state *rs = get_remote_state (); | |
2149 | ||
2150 | if (remote_multi_process_p (rs)) | |
2151 | { | |
2152 | pid = ptid_get_pid (ptid); | |
2153 | if (pid < 0) | |
2154 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
2155 | else | |
2156 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
2157 | } | |
25e4902b | 2158 | tid = ptid_get_lwp (ptid); |
5796c8dc SS |
2159 | if (tid < 0) |
2160 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
2161 | else | |
2162 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
2163 | ||
2164 | return buf; | |
2165 | } | |
2166 | ||
2167 | /* Extract a PTID from BUF. If non-null, OBUF is set to the to one | |
2168 | passed the last parsed char. Returns null_ptid on error. */ | |
2169 | ||
2170 | static ptid_t | |
2171 | read_ptid (char *buf, char **obuf) | |
2172 | { | |
2173 | char *p = buf; | |
2174 | char *pp; | |
2175 | ULONGEST pid = 0, tid = 0; | |
2176 | ||
2177 | if (*p == 'p') | |
2178 | { | |
2179 | /* Multi-process ptid. */ | |
2180 | pp = unpack_varlen_hex (p + 1, &pid); | |
2181 | if (*pp != '.') | |
c50c785c | 2182 | error (_("invalid remote ptid: %s"), p); |
5796c8dc SS |
2183 | |
2184 | p = pp; | |
2185 | pp = unpack_varlen_hex (p + 1, &tid); | |
2186 | if (obuf) | |
2187 | *obuf = pp; | |
25e4902b | 2188 | return ptid_build (pid, tid, 0); |
5796c8dc SS |
2189 | } |
2190 | ||
2191 | /* No multi-process. Just a tid. */ | |
2192 | pp = unpack_varlen_hex (p, &tid); | |
2193 | ||
2194 | /* Since the stub is not sending a process id, then default to | |
2195 | what's in inferior_ptid, unless it's null at this point. If so, | |
2196 | then since there's no way to know the pid of the reported | |
2197 | threads, use the magic number. */ | |
2198 | if (ptid_equal (inferior_ptid, null_ptid)) | |
2199 | pid = ptid_get_pid (magic_null_ptid); | |
2200 | else | |
2201 | pid = ptid_get_pid (inferior_ptid); | |
2202 | ||
2203 | if (obuf) | |
2204 | *obuf = pp; | |
25e4902b | 2205 | return ptid_build (pid, tid, 0); |
5796c8dc SS |
2206 | } |
2207 | ||
2208 | static int | |
2209 | stubhex (int ch) | |
2210 | { | |
2211 | if (ch >= 'a' && ch <= 'f') | |
2212 | return ch - 'a' + 10; | |
2213 | if (ch >= '0' && ch <= '9') | |
2214 | return ch - '0'; | |
2215 | if (ch >= 'A' && ch <= 'F') | |
2216 | return ch - 'A' + 10; | |
2217 | return -1; | |
2218 | } | |
2219 | ||
2220 | static int | |
2221 | stub_unpack_int (char *buff, int fieldlength) | |
2222 | { | |
2223 | int nibble; | |
2224 | int retval = 0; | |
2225 | ||
2226 | while (fieldlength) | |
2227 | { | |
2228 | nibble = stubhex (*buff++); | |
2229 | retval |= nibble; | |
2230 | fieldlength--; | |
2231 | if (fieldlength) | |
2232 | retval = retval << 4; | |
2233 | } | |
2234 | return retval; | |
2235 | } | |
2236 | ||
5796c8dc SS |
2237 | static char * |
2238 | unpack_nibble (char *buf, int *val) | |
2239 | { | |
2240 | *val = fromhex (*buf++); | |
2241 | return buf; | |
2242 | } | |
2243 | ||
5796c8dc SS |
2244 | static char * |
2245 | unpack_byte (char *buf, int *value) | |
2246 | { | |
2247 | *value = stub_unpack_int (buf, 2); | |
2248 | return buf + 2; | |
2249 | } | |
2250 | ||
2251 | static char * | |
2252 | pack_int (char *buf, int value) | |
2253 | { | |
2254 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
2255 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
2256 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
2257 | buf = pack_hex_byte (buf, (value & 0xff)); | |
2258 | return buf; | |
2259 | } | |
2260 | ||
2261 | static char * | |
2262 | unpack_int (char *buf, int *value) | |
2263 | { | |
2264 | *value = stub_unpack_int (buf, 8); | |
2265 | return buf + 8; | |
2266 | } | |
2267 | ||
2268 | #if 0 /* Currently unused, uncomment when needed. */ | |
2269 | static char *pack_string (char *pkt, char *string); | |
2270 | ||
2271 | static char * | |
2272 | pack_string (char *pkt, char *string) | |
2273 | { | |
2274 | char ch; | |
2275 | int len; | |
2276 | ||
2277 | len = strlen (string); | |
2278 | if (len > 200) | |
2279 | len = 200; /* Bigger than most GDB packets, junk??? */ | |
2280 | pkt = pack_hex_byte (pkt, len); | |
2281 | while (len-- > 0) | |
2282 | { | |
2283 | ch = *string++; | |
2284 | if ((ch == '\0') || (ch == '#')) | |
2285 | ch = '*'; /* Protect encapsulation. */ | |
2286 | *pkt++ = ch; | |
2287 | } | |
2288 | return pkt; | |
2289 | } | |
2290 | #endif /* 0 (unused) */ | |
2291 | ||
2292 | static char * | |
2293 | unpack_string (char *src, char *dest, int length) | |
2294 | { | |
2295 | while (length--) | |
2296 | *dest++ = *src++; | |
2297 | *dest = '\0'; | |
2298 | return src; | |
2299 | } | |
2300 | ||
2301 | static char * | |
2302 | pack_threadid (char *pkt, threadref *id) | |
2303 | { | |
2304 | char *limit; | |
2305 | unsigned char *altid; | |
2306 | ||
2307 | altid = (unsigned char *) id; | |
2308 | limit = pkt + BUF_THREAD_ID_SIZE; | |
2309 | while (pkt < limit) | |
2310 | pkt = pack_hex_byte (pkt, *altid++); | |
2311 | return pkt; | |
2312 | } | |
2313 | ||
2314 | ||
2315 | static char * | |
2316 | unpack_threadid (char *inbuf, threadref *id) | |
2317 | { | |
2318 | char *altref; | |
2319 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
2320 | int x, y; | |
2321 | ||
2322 | altref = (char *) id; | |
2323 | ||
2324 | while (inbuf < limit) | |
2325 | { | |
2326 | x = stubhex (*inbuf++); | |
2327 | y = stubhex (*inbuf++); | |
2328 | *altref++ = (x << 4) | y; | |
2329 | } | |
2330 | return inbuf; | |
2331 | } | |
2332 | ||
2333 | /* Externally, threadrefs are 64 bits but internally, they are still | |
c50c785c | 2334 | ints. This is due to a mismatch of specifications. We would like |
5796c8dc SS |
2335 | to use 64bit thread references internally. This is an adapter |
2336 | function. */ | |
2337 | ||
2338 | void | |
2339 | int_to_threadref (threadref *id, int value) | |
2340 | { | |
2341 | unsigned char *scan; | |
2342 | ||
2343 | scan = (unsigned char *) id; | |
2344 | { | |
2345 | int i = 4; | |
2346 | while (i--) | |
2347 | *scan++ = 0; | |
2348 | } | |
2349 | *scan++ = (value >> 24) & 0xff; | |
2350 | *scan++ = (value >> 16) & 0xff; | |
2351 | *scan++ = (value >> 8) & 0xff; | |
2352 | *scan++ = (value & 0xff); | |
2353 | } | |
2354 | ||
2355 | static int | |
2356 | threadref_to_int (threadref *ref) | |
2357 | { | |
2358 | int i, value = 0; | |
2359 | unsigned char *scan; | |
2360 | ||
2361 | scan = *ref; | |
2362 | scan += 4; | |
2363 | i = 4; | |
2364 | while (i-- > 0) | |
2365 | value = (value << 8) | ((*scan++) & 0xff); | |
2366 | return value; | |
2367 | } | |
2368 | ||
2369 | static void | |
2370 | copy_threadref (threadref *dest, threadref *src) | |
2371 | { | |
2372 | int i; | |
2373 | unsigned char *csrc, *cdest; | |
2374 | ||
2375 | csrc = (unsigned char *) src; | |
2376 | cdest = (unsigned char *) dest; | |
2377 | i = 8; | |
2378 | while (i--) | |
2379 | *cdest++ = *csrc++; | |
2380 | } | |
2381 | ||
2382 | static int | |
2383 | threadmatch (threadref *dest, threadref *src) | |
2384 | { | |
2385 | /* Things are broken right now, so just assume we got a match. */ | |
2386 | #if 0 | |
2387 | unsigned char *srcp, *destp; | |
2388 | int i, result; | |
2389 | srcp = (char *) src; | |
2390 | destp = (char *) dest; | |
2391 | ||
2392 | result = 1; | |
2393 | while (i-- > 0) | |
2394 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
2395 | return result; | |
2396 | #endif | |
2397 | return 1; | |
2398 | } | |
2399 | ||
2400 | /* | |
2401 | threadid:1, # always request threadid | |
2402 | context_exists:2, | |
2403 | display:4, | |
2404 | unique_name:8, | |
2405 | more_display:16 | |
2406 | */ | |
2407 | ||
2408 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
2409 | ||
2410 | static char * | |
2411 | pack_threadinfo_request (char *pkt, int mode, threadref *id) | |
2412 | { | |
2413 | *pkt++ = 'q'; /* Info Query */ | |
2414 | *pkt++ = 'P'; /* process or thread info */ | |
2415 | pkt = pack_int (pkt, mode); /* mode */ | |
2416 | pkt = pack_threadid (pkt, id); /* threadid */ | |
2417 | *pkt = '\0'; /* terminate */ | |
2418 | return pkt; | |
2419 | } | |
2420 | ||
2421 | /* These values tag the fields in a thread info response packet. */ | |
2422 | /* Tagging the fields allows us to request specific fields and to | |
2423 | add more fields as time goes by. */ | |
2424 | ||
2425 | #define TAG_THREADID 1 /* Echo the thread identifier. */ | |
2426 | #define TAG_EXISTS 2 /* Is this process defined enough to | |
2427 | fetch registers and its stack? */ | |
2428 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ | |
2429 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ | |
2430 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about | |
2431 | the process. */ | |
2432 | ||
2433 | static int | |
2434 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, | |
2435 | struct gdb_ext_thread_info *info) | |
2436 | { | |
2437 | struct remote_state *rs = get_remote_state (); | |
2438 | int mask, length; | |
2439 | int tag; | |
2440 | threadref ref; | |
2441 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ | |
2442 | int retval = 1; | |
2443 | ||
2444 | /* info->threadid = 0; FIXME: implement zero_threadref. */ | |
2445 | info->active = 0; | |
2446 | info->display[0] = '\0'; | |
2447 | info->shortname[0] = '\0'; | |
2448 | info->more_display[0] = '\0'; | |
2449 | ||
2450 | /* Assume the characters indicating the packet type have been | |
2451 | stripped. */ | |
2452 | pkt = unpack_int (pkt, &mask); /* arg mask */ | |
2453 | pkt = unpack_threadid (pkt, &ref); | |
2454 | ||
2455 | if (mask == 0) | |
2456 | warning (_("Incomplete response to threadinfo request.")); | |
2457 | if (!threadmatch (&ref, expectedref)) | |
2458 | { /* This is an answer to a different request. */ | |
2459 | warning (_("ERROR RMT Thread info mismatch.")); | |
2460 | return 0; | |
2461 | } | |
2462 | copy_threadref (&info->threadid, &ref); | |
2463 | ||
2464 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ | |
2465 | ||
2466 | /* Packets are terminated with nulls. */ | |
2467 | while ((pkt < limit) && mask && *pkt) | |
2468 | { | |
2469 | pkt = unpack_int (pkt, &tag); /* tag */ | |
2470 | pkt = unpack_byte (pkt, &length); /* length */ | |
2471 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
2472 | { | |
2473 | warning (_("ERROR RMT: threadinfo tag mismatch.")); | |
2474 | retval = 0; | |
2475 | break; | |
2476 | } | |
2477 | if (tag == TAG_THREADID) | |
2478 | { | |
2479 | if (length != 16) | |
2480 | { | |
2481 | warning (_("ERROR RMT: length of threadid is not 16.")); | |
2482 | retval = 0; | |
2483 | break; | |
2484 | } | |
2485 | pkt = unpack_threadid (pkt, &ref); | |
2486 | mask = mask & ~TAG_THREADID; | |
2487 | continue; | |
2488 | } | |
2489 | if (tag == TAG_EXISTS) | |
2490 | { | |
2491 | info->active = stub_unpack_int (pkt, length); | |
2492 | pkt += length; | |
2493 | mask = mask & ~(TAG_EXISTS); | |
2494 | if (length > 8) | |
2495 | { | |
2496 | warning (_("ERROR RMT: 'exists' length too long.")); | |
2497 | retval = 0; | |
2498 | break; | |
2499 | } | |
2500 | continue; | |
2501 | } | |
2502 | if (tag == TAG_THREADNAME) | |
2503 | { | |
2504 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
2505 | mask = mask & ~TAG_THREADNAME; | |
2506 | continue; | |
2507 | } | |
2508 | if (tag == TAG_DISPLAY) | |
2509 | { | |
2510 | pkt = unpack_string (pkt, &info->display[0], length); | |
2511 | mask = mask & ~TAG_DISPLAY; | |
2512 | continue; | |
2513 | } | |
2514 | if (tag == TAG_MOREDISPLAY) | |
2515 | { | |
2516 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
2517 | mask = mask & ~TAG_MOREDISPLAY; | |
2518 | continue; | |
2519 | } | |
2520 | warning (_("ERROR RMT: unknown thread info tag.")); | |
2521 | break; /* Not a tag we know about. */ | |
2522 | } | |
2523 | return retval; | |
2524 | } | |
2525 | ||
2526 | static int | |
2527 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ | |
2528 | struct gdb_ext_thread_info *info) | |
2529 | { | |
2530 | struct remote_state *rs = get_remote_state (); | |
2531 | int result; | |
2532 | ||
2533 | pack_threadinfo_request (rs->buf, fieldset, threadid); | |
2534 | putpkt (rs->buf); | |
2535 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2536 | ||
2537 | if (rs->buf[0] == '\0') | |
2538 | return 0; | |
2539 | ||
2540 | result = remote_unpack_thread_info_response (rs->buf + 2, | |
2541 | threadid, info); | |
2542 | return result; | |
2543 | } | |
2544 | ||
2545 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ | |
2546 | ||
2547 | static char * | |
2548 | pack_threadlist_request (char *pkt, int startflag, int threadcount, | |
2549 | threadref *nextthread) | |
2550 | { | |
2551 | *pkt++ = 'q'; /* info query packet */ | |
2552 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
2553 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ | |
2554 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ | |
2555 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
2556 | *pkt = '\0'; | |
2557 | return pkt; | |
2558 | } | |
2559 | ||
2560 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
2561 | ||
2562 | static int | |
2563 | parse_threadlist_response (char *pkt, int result_limit, | |
2564 | threadref *original_echo, threadref *resultlist, | |
2565 | int *doneflag) | |
2566 | { | |
2567 | struct remote_state *rs = get_remote_state (); | |
2568 | char *limit; | |
2569 | int count, resultcount, done; | |
2570 | ||
2571 | resultcount = 0; | |
2572 | /* Assume the 'q' and 'M chars have been stripped. */ | |
2573 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); | |
2574 | /* done parse past here */ | |
2575 | pkt = unpack_byte (pkt, &count); /* count field */ | |
2576 | pkt = unpack_nibble (pkt, &done); | |
2577 | /* The first threadid is the argument threadid. */ | |
2578 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
2579 | while ((count-- > 0) && (pkt < limit)) | |
2580 | { | |
2581 | pkt = unpack_threadid (pkt, resultlist++); | |
2582 | if (resultcount++ >= result_limit) | |
2583 | break; | |
2584 | } | |
2585 | if (doneflag) | |
2586 | *doneflag = done; | |
2587 | return resultcount; | |
2588 | } | |
2589 | ||
25e4902b AHJ |
2590 | /* Fetch the next batch of threads from the remote. Returns -1 if the |
2591 | qL packet is not supported, 0 on error and 1 on success. */ | |
2592 | ||
5796c8dc SS |
2593 | static int |
2594 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, | |
2595 | int *done, int *result_count, threadref *threadlist) | |
2596 | { | |
2597 | struct remote_state *rs = get_remote_state (); | |
5796c8dc SS |
2598 | int result = 1; |
2599 | ||
2600 | /* Trancate result limit to be smaller than the packet size. */ | |
c50c785c JM |
2601 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) |
2602 | >= get_remote_packet_size ()) | |
5796c8dc SS |
2603 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; |
2604 | ||
2605 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); | |
2606 | putpkt (rs->buf); | |
2607 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5796c8dc | 2608 | if (*rs->buf == '\0') |
25e4902b AHJ |
2609 | { |
2610 | /* Packet not supported. */ | |
2611 | return -1; | |
2612 | } | |
5796c8dc | 2613 | |
25e4902b AHJ |
2614 | *result_count = |
2615 | parse_threadlist_response (rs->buf + 2, result_limit, | |
2616 | &rs->echo_nextthread, threadlist, done); | |
2617 | ||
2618 | if (!threadmatch (&rs->echo_nextthread, nextthread)) | |
5796c8dc SS |
2619 | { |
2620 | /* FIXME: This is a good reason to drop the packet. */ | |
2621 | /* Possably, there is a duplicate response. */ | |
2622 | /* Possabilities : | |
2623 | retransmit immediatly - race conditions | |
2624 | retransmit after timeout - yes | |
2625 | exit | |
2626 | wait for packet, then exit | |
2627 | */ | |
2628 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); | |
2629 | return 0; /* I choose simply exiting. */ | |
2630 | } | |
2631 | if (*result_count <= 0) | |
2632 | { | |
2633 | if (*done != 1) | |
2634 | { | |
2635 | warning (_("RMT ERROR : failed to get remote thread list.")); | |
2636 | result = 0; | |
2637 | } | |
2638 | return result; /* break; */ | |
2639 | } | |
2640 | if (*result_count > result_limit) | |
2641 | { | |
2642 | *result_count = 0; | |
2643 | warning (_("RMT ERROR: threadlist response longer than requested.")); | |
2644 | return 0; | |
2645 | } | |
2646 | return result; | |
2647 | } | |
2648 | ||
25e4902b AHJ |
2649 | /* Fetch the list of remote threads, with the qL packet, and call |
2650 | STEPFUNCTION for each thread found. Stops iterating and returns 1 | |
2651 | if STEPFUNCTION returns true. Stops iterating and returns 0 if the | |
2652 | STEPFUNCTION returns false. If the packet is not supported, | |
2653 | returns -1. */ | |
5796c8dc SS |
2654 | |
2655 | static int | |
2656 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, | |
2657 | int looplimit) | |
2658 | { | |
25e4902b | 2659 | struct remote_state *rs = get_remote_state (); |
5796c8dc SS |
2660 | int done, i, result_count; |
2661 | int startflag = 1; | |
2662 | int result = 1; | |
2663 | int loopcount = 0; | |
5796c8dc SS |
2664 | |
2665 | done = 0; | |
2666 | while (!done) | |
2667 | { | |
2668 | if (loopcount++ > looplimit) | |
2669 | { | |
2670 | result = 0; | |
2671 | warning (_("Remote fetch threadlist -infinite loop-.")); | |
2672 | break; | |
2673 | } | |
25e4902b AHJ |
2674 | result = remote_get_threadlist (startflag, &rs->nextthread, |
2675 | MAXTHREADLISTRESULTS, | |
2676 | &done, &result_count, | |
2677 | rs->resultthreadlist); | |
2678 | if (result <= 0) | |
2679 | break; | |
5796c8dc SS |
2680 | /* Clear for later iterations. */ |
2681 | startflag = 0; | |
2682 | /* Setup to resume next batch of thread references, set nextthread. */ | |
2683 | if (result_count >= 1) | |
25e4902b AHJ |
2684 | copy_threadref (&rs->nextthread, |
2685 | &rs->resultthreadlist[result_count - 1]); | |
5796c8dc SS |
2686 | i = 0; |
2687 | while (result_count--) | |
25e4902b AHJ |
2688 | { |
2689 | if (!(*stepfunction) (&rs->resultthreadlist[i++], context)) | |
2690 | { | |
2691 | result = 0; | |
2692 | break; | |
2693 | } | |
2694 | } | |
5796c8dc SS |
2695 | } |
2696 | return result; | |
2697 | } | |
2698 | ||
25e4902b AHJ |
2699 | /* A thread found on the remote target. */ |
2700 | ||
2701 | typedef struct thread_item | |
2702 | { | |
2703 | /* The thread's PTID. */ | |
2704 | ptid_t ptid; | |
2705 | ||
2706 | /* The thread's extra info. May be NULL. */ | |
2707 | char *extra; | |
2708 | ||
2709 | /* The core the thread was running on. -1 if not known. */ | |
2710 | int core; | |
2711 | } thread_item_t; | |
2712 | DEF_VEC_O(thread_item_t); | |
2713 | ||
2714 | /* Context passed around to the various methods listing remote | |
2715 | threads. As new threads are found, they're added to the ITEMS | |
2716 | vector. */ | |
2717 | ||
2718 | struct threads_listing_context | |
2719 | { | |
2720 | /* The threads found on the remote target. */ | |
2721 | VEC (thread_item_t) *items; | |
2722 | }; | |
2723 | ||
2724 | /* Discard the contents of the constructed thread listing context. */ | |
2725 | ||
2726 | static void | |
2727 | clear_threads_listing_context (void *p) | |
2728 | { | |
2729 | struct threads_listing_context *context = p; | |
2730 | int i; | |
2731 | struct thread_item *item; | |
2732 | ||
2733 | for (i = 0; VEC_iterate (thread_item_t, context->items, i, item); ++i) | |
2734 | xfree (item->extra); | |
2735 | ||
2736 | VEC_free (thread_item_t, context->items); | |
2737 | } | |
2738 | ||
2739 | /* Remove the thread specified as the related_pid field of WS | |
2740 | from the CONTEXT list. */ | |
2741 | ||
2742 | static void | |
2743 | threads_listing_context_remove (struct target_waitstatus *ws, | |
2744 | struct threads_listing_context *context) | |
2745 | { | |
2746 | struct thread_item *item; | |
2747 | int i; | |
2748 | ptid_t child_ptid = ws->value.related_pid; | |
2749 | ||
2750 | for (i = 0; VEC_iterate (thread_item_t, context->items, i, item); ++i) | |
2751 | { | |
2752 | if (ptid_equal (item->ptid, child_ptid)) | |
2753 | { | |
2754 | VEC_ordered_remove (thread_item_t, context->items, i); | |
2755 | break; | |
2756 | } | |
2757 | } | |
2758 | } | |
2759 | ||
5796c8dc | 2760 | static int |
25e4902b | 2761 | remote_newthread_step (threadref *ref, void *data) |
5796c8dc | 2762 | { |
25e4902b AHJ |
2763 | struct threads_listing_context *context = data; |
2764 | struct thread_item item; | |
5796c8dc | 2765 | int pid = ptid_get_pid (inferior_ptid); |
5796c8dc | 2766 | |
25e4902b AHJ |
2767 | item.ptid = ptid_build (pid, threadref_to_int (ref), 0); |
2768 | item.core = -1; | |
2769 | item.extra = NULL; | |
2770 | ||
2771 | VEC_safe_push (thread_item_t, context->items, &item); | |
2772 | ||
5796c8dc SS |
2773 | return 1; /* continue iterator */ |
2774 | } | |
2775 | ||
2776 | #define CRAZY_MAX_THREADS 1000 | |
2777 | ||
2778 | static ptid_t | |
2779 | remote_current_thread (ptid_t oldpid) | |
2780 | { | |
2781 | struct remote_state *rs = get_remote_state (); | |
2782 | ||
2783 | putpkt ("qC"); | |
2784 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2785 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') | |
2786 | return read_ptid (&rs->buf[2], NULL); | |
2787 | else | |
2788 | return oldpid; | |
2789 | } | |
2790 | ||
25e4902b | 2791 | /* List remote threads using the deprecated qL packet. */ |
5796c8dc | 2792 | |
25e4902b AHJ |
2793 | static int |
2794 | remote_get_threads_with_ql (struct target_ops *ops, | |
2795 | struct threads_listing_context *context) | |
5796c8dc | 2796 | { |
25e4902b AHJ |
2797 | if (remote_threadlist_iterator (remote_newthread_step, context, |
2798 | CRAZY_MAX_THREADS) >= 0) | |
2799 | return 1; | |
2800 | ||
2801 | return 0; | |
5796c8dc SS |
2802 | } |
2803 | ||
cf7f2e2d JM |
2804 | #if defined(HAVE_LIBEXPAT) |
2805 | ||
cf7f2e2d JM |
2806 | static void |
2807 | start_thread (struct gdb_xml_parser *parser, | |
2808 | const struct gdb_xml_element *element, | |
2809 | void *user_data, VEC(gdb_xml_value_s) *attributes) | |
2810 | { | |
25e4902b | 2811 | struct threads_listing_context *data = user_data; |
cf7f2e2d JM |
2812 | |
2813 | struct thread_item item; | |
2814 | char *id; | |
c50c785c | 2815 | struct gdb_xml_value *attr; |
cf7f2e2d | 2816 | |
c50c785c | 2817 | id = xml_find_attribute (attributes, "id")->value; |
cf7f2e2d JM |
2818 | item.ptid = read_ptid (id, NULL); |
2819 | ||
c50c785c JM |
2820 | attr = xml_find_attribute (attributes, "core"); |
2821 | if (attr != NULL) | |
2822 | item.core = *(ULONGEST *) attr->value; | |
cf7f2e2d JM |
2823 | else |
2824 | item.core = -1; | |
2825 | ||
2826 | item.extra = 0; | |
2827 | ||
2828 | VEC_safe_push (thread_item_t, data->items, &item); | |
2829 | } | |
2830 | ||
2831 | static void | |
2832 | end_thread (struct gdb_xml_parser *parser, | |
2833 | const struct gdb_xml_element *element, | |
2834 | void *user_data, const char *body_text) | |
2835 | { | |
25e4902b | 2836 | struct threads_listing_context *data = user_data; |
cf7f2e2d JM |
2837 | |
2838 | if (body_text && *body_text) | |
2839 | VEC_last (thread_item_t, data->items)->extra = xstrdup (body_text); | |
2840 | } | |
2841 | ||
2842 | const struct gdb_xml_attribute thread_attributes[] = { | |
2843 | { "id", GDB_XML_AF_NONE, NULL, NULL }, | |
2844 | { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
2845 | { NULL, GDB_XML_AF_NONE, NULL, NULL } | |
2846 | }; | |
2847 | ||
2848 | const struct gdb_xml_element thread_children[] = { | |
2849 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2850 | }; | |
2851 | ||
2852 | const struct gdb_xml_element threads_children[] = { | |
2853 | { "thread", thread_attributes, thread_children, | |
2854 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, | |
2855 | start_thread, end_thread }, | |
2856 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2857 | }; | |
2858 | ||
2859 | const struct gdb_xml_element threads_elements[] = { | |
2860 | { "threads", NULL, threads_children, | |
2861 | GDB_XML_EF_NONE, NULL, NULL }, | |
2862 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2863 | }; | |
2864 | ||
cf7f2e2d JM |
2865 | #endif |
2866 | ||
25e4902b | 2867 | /* List remote threads using qXfer:threads:read. */ |
5796c8dc | 2868 | |
25e4902b AHJ |
2869 | static int |
2870 | remote_get_threads_with_qxfer (struct target_ops *ops, | |
2871 | struct threads_listing_context *context) | |
5796c8dc | 2872 | { |
cf7f2e2d | 2873 | #if defined(HAVE_LIBEXPAT) |
25e4902b | 2874 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
cf7f2e2d | 2875 | { |
25e4902b | 2876 | char *xml = target_read_stralloc (ops, TARGET_OBJECT_THREADS, NULL); |
cf7f2e2d | 2877 | struct cleanup *back_to = make_cleanup (xfree, xml); |
c50c785c | 2878 | |
25e4902b | 2879 | if (xml != NULL && *xml != '\0') |
cf7f2e2d | 2880 | { |
25e4902b AHJ |
2881 | gdb_xml_parse_quick (_("threads"), "threads.dtd", |
2882 | threads_elements, xml, context); | |
cf7f2e2d JM |
2883 | } |
2884 | ||
2885 | do_cleanups (back_to); | |
25e4902b | 2886 | return 1; |
cf7f2e2d JM |
2887 | } |
2888 | #endif | |
2889 | ||
25e4902b AHJ |
2890 | return 0; |
2891 | } | |
2892 | ||
2893 | /* List remote threads using qfThreadInfo/qsThreadInfo. */ | |
2894 | ||
2895 | static int | |
2896 | remote_get_threads_with_qthreadinfo (struct target_ops *ops, | |
2897 | struct threads_listing_context *context) | |
2898 | { | |
2899 | struct remote_state *rs = get_remote_state (); | |
2900 | ||
2901 | if (rs->use_threadinfo_query) | |
5796c8dc | 2902 | { |
25e4902b AHJ |
2903 | char *bufp; |
2904 | ||
5796c8dc SS |
2905 | putpkt ("qfThreadInfo"); |
2906 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2907 | bufp = rs->buf; | |
2908 | if (bufp[0] != '\0') /* q packet recognized */ | |
2909 | { | |
2910 | while (*bufp++ == 'm') /* reply contains one or more TID */ | |
2911 | { | |
2912 | do | |
2913 | { | |
25e4902b | 2914 | struct thread_item item; |
5796c8dc | 2915 | |
25e4902b AHJ |
2916 | item.ptid = read_ptid (bufp, &bufp); |
2917 | item.core = -1; | |
2918 | item.extra = NULL; | |
2919 | ||
2920 | VEC_safe_push (thread_item_t, context->items, &item); | |
5796c8dc SS |
2921 | } |
2922 | while (*bufp++ == ','); /* comma-separated list */ | |
2923 | putpkt ("qsThreadInfo"); | |
2924 | getpkt (&rs->buf, &rs->buf_size, 0); | |
25e4902b | 2925 | bufp = rs->buf; |
5796c8dc | 2926 | } |
25e4902b AHJ |
2927 | return 1; |
2928 | } | |
2929 | else | |
2930 | { | |
2931 | /* Packet not recognized. */ | |
2932 | rs->use_threadinfo_query = 0; | |
2933 | } | |
2934 | } | |
2935 | ||
2936 | return 0; | |
2937 | } | |
2938 | ||
2939 | /* Implement the to_update_thread_list function for the remote | |
2940 | targets. */ | |
2941 | ||
2942 | static void | |
2943 | remote_update_thread_list (struct target_ops *ops) | |
2944 | { | |
2945 | struct remote_state *rs = get_remote_state (); | |
2946 | struct threads_listing_context context; | |
2947 | struct cleanup *old_chain; | |
2948 | int got_list = 0; | |
2949 | ||
2950 | context.items = NULL; | |
2951 | old_chain = make_cleanup (clear_threads_listing_context, &context); | |
2952 | ||
2953 | /* We have a few different mechanisms to fetch the thread list. Try | |
2954 | them all, starting with the most preferred one first, falling | |
2955 | back to older methods. */ | |
2956 | if (remote_get_threads_with_qxfer (ops, &context) | |
2957 | || remote_get_threads_with_qthreadinfo (ops, &context) | |
2958 | || remote_get_threads_with_ql (ops, &context)) | |
2959 | { | |
2960 | int i; | |
2961 | struct thread_item *item; | |
2962 | struct thread_info *tp, *tmp; | |
2963 | ||
2964 | got_list = 1; | |
2965 | ||
2966 | if (VEC_empty (thread_item_t, context.items) | |
2967 | && remote_thread_always_alive (ops, inferior_ptid)) | |
2968 | { | |
2969 | /* Some targets don't really support threads, but still | |
2970 | reply an (empty) thread list in response to the thread | |
2971 | listing packets, instead of replying "packet not | |
2972 | supported". Exit early so we don't delete the main | |
2973 | thread. */ | |
ef5ccd6c | 2974 | do_cleanups (old_chain); |
25e4902b AHJ |
2975 | return; |
2976 | } | |
2977 | ||
2978 | /* CONTEXT now holds the current thread list on the remote | |
2979 | target end. Delete GDB-side threads no longer found on the | |
2980 | target. */ | |
2981 | ALL_THREADS_SAFE (tp, tmp) | |
2982 | { | |
2983 | for (i = 0; | |
2984 | VEC_iterate (thread_item_t, context.items, i, item); | |
2985 | ++i) | |
2986 | { | |
2987 | if (ptid_equal (item->ptid, tp->ptid)) | |
2988 | break; | |
2989 | } | |
2990 | ||
2991 | if (i == VEC_length (thread_item_t, context.items)) | |
2992 | { | |
2993 | /* Not found. */ | |
2994 | delete_thread (tp->ptid); | |
2995 | } | |
2996 | } | |
2997 | ||
2998 | /* Remove any unreported fork child threads from CONTEXT so | |
2999 | that we don't interfere with follow fork, which is where | |
3000 | creation of such threads is handled. */ | |
3001 | remove_new_fork_children (&context); | |
3002 | ||
3003 | /* And now add threads we don't know about yet to our list. */ | |
3004 | for (i = 0; | |
3005 | VEC_iterate (thread_item_t, context.items, i, item); | |
3006 | ++i) | |
3007 | { | |
3008 | if (!ptid_equal (item->ptid, null_ptid)) | |
3009 | { | |
3010 | struct private_thread_info *info; | |
3011 | /* In non-stop mode, we assume new found threads are | |
3012 | running until proven otherwise with a stop reply. In | |
3013 | all-stop, we can only get here if all threads are | |
3014 | stopped. */ | |
3015 | int running = non_stop ? 1 : 0; | |
3016 | ||
3017 | remote_notice_new_inferior (item->ptid, running); | |
3018 | ||
3019 | info = demand_private_info (item->ptid); | |
3020 | info->core = item->core; | |
3021 | info->extra = item->extra; | |
3022 | item->extra = NULL; | |
3023 | } | |
5796c8dc SS |
3024 | } |
3025 | } | |
3026 | ||
25e4902b AHJ |
3027 | if (!got_list) |
3028 | { | |
3029 | /* If no thread listing method is supported, then query whether | |
3030 | each known thread is alive, one by one, with the T packet. | |
3031 | If the target doesn't support threads at all, then this is a | |
3032 | no-op. See remote_thread_alive. */ | |
3033 | prune_threads (); | |
3034 | } | |
5796c8dc | 3035 | |
25e4902b | 3036 | do_cleanups (old_chain); |
5796c8dc SS |
3037 | } |
3038 | ||
3039 | /* | |
3040 | * Collect a descriptive string about the given thread. | |
3041 | * The target may say anything it wants to about the thread | |
3042 | * (typically info about its blocked / runnable state, name, etc.). | |
3043 | * This string will appear in the info threads display. | |
3044 | * | |
3045 | * Optional: targets are not required to implement this function. | |
3046 | */ | |
3047 | ||
3048 | static char * | |
25e4902b | 3049 | remote_threads_extra_info (struct target_ops *self, struct thread_info *tp) |
5796c8dc SS |
3050 | { |
3051 | struct remote_state *rs = get_remote_state (); | |
3052 | int result; | |
3053 | int set; | |
3054 | threadref id; | |
3055 | struct gdb_ext_thread_info threadinfo; | |
3056 | static char display_buf[100]; /* arbitrary... */ | |
3057 | int n = 0; /* position in display_buf */ | |
3058 | ||
25e4902b | 3059 | if (rs->remote_desc == 0) /* paranoia */ |
5796c8dc SS |
3060 | internal_error (__FILE__, __LINE__, |
3061 | _("remote_threads_extra_info")); | |
3062 | ||
3063 | if (ptid_equal (tp->ptid, magic_null_ptid) | |
25e4902b | 3064 | || (ptid_get_pid (tp->ptid) != 0 && ptid_get_lwp (tp->ptid) == 0)) |
5796c8dc SS |
3065 | /* This is the main thread which was added by GDB. The remote |
3066 | server doesn't know about it. */ | |
3067 | return NULL; | |
3068 | ||
25e4902b | 3069 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
cf7f2e2d JM |
3070 | { |
3071 | struct thread_info *info = find_thread_ptid (tp->ptid); | |
3072 | ||
25e4902b AHJ |
3073 | if (info && info->priv) |
3074 | return info->priv->extra; | |
cf7f2e2d JM |
3075 | else |
3076 | return NULL; | |
3077 | } | |
3078 | ||
25e4902b | 3079 | if (rs->use_threadextra_query) |
5796c8dc SS |
3080 | { |
3081 | char *b = rs->buf; | |
3082 | char *endb = rs->buf + get_remote_packet_size (); | |
3083 | ||
3084 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
3085 | b += strlen (b); | |
3086 | write_ptid (b, endb, tp->ptid); | |
3087 | ||
3088 | putpkt (rs->buf); | |
3089 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3090 | if (rs->buf[0] != 0) | |
3091 | { | |
3092 | n = min (strlen (rs->buf) / 2, sizeof (display_buf)); | |
3093 | result = hex2bin (rs->buf, (gdb_byte *) display_buf, n); | |
3094 | display_buf [result] = '\0'; | |
3095 | return display_buf; | |
3096 | } | |
3097 | } | |
3098 | ||
3099 | /* If the above query fails, fall back to the old method. */ | |
25e4902b | 3100 | rs->use_threadextra_query = 0; |
5796c8dc SS |
3101 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME |
3102 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
25e4902b | 3103 | int_to_threadref (&id, ptid_get_lwp (tp->ptid)); |
5796c8dc SS |
3104 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
3105 | if (threadinfo.active) | |
3106 | { | |
3107 | if (*threadinfo.shortname) | |
3108 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, | |
3109 | " Name: %s,", threadinfo.shortname); | |
3110 | if (*threadinfo.display) | |
3111 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, | |
3112 | " State: %s,", threadinfo.display); | |
3113 | if (*threadinfo.more_display) | |
3114 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, | |
3115 | " Priority: %s", threadinfo.more_display); | |
3116 | ||
3117 | if (n > 0) | |
3118 | { | |
3119 | /* For purely cosmetic reasons, clear up trailing commas. */ | |
3120 | if (',' == display_buf[n-1]) | |
3121 | display_buf[n-1] = ' '; | |
3122 | return display_buf; | |
3123 | } | |
3124 | } | |
3125 | return NULL; | |
3126 | } | |
3127 | \f | |
3128 | ||
cf7f2e2d | 3129 | static int |
25e4902b | 3130 | remote_static_tracepoint_marker_at (struct target_ops *self, CORE_ADDR addr, |
cf7f2e2d JM |
3131 | struct static_tracepoint_marker *marker) |
3132 | { | |
3133 | struct remote_state *rs = get_remote_state (); | |
3134 | char *p = rs->buf; | |
3135 | ||
ef5ccd6c | 3136 | xsnprintf (p, get_remote_packet_size (), "qTSTMat:"); |
cf7f2e2d JM |
3137 | p += strlen (p); |
3138 | p += hexnumstr (p, addr); | |
3139 | putpkt (rs->buf); | |
3140 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3141 | p = rs->buf; | |
3142 | ||
3143 | if (*p == 'E') | |
3144 | error (_("Remote failure reply: %s"), p); | |
3145 | ||
3146 | if (*p++ == 'm') | |
3147 | { | |
3148 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
3149 | return 1; | |
3150 | } | |
3151 | ||
3152 | return 0; | |
3153 | } | |
3154 | ||
cf7f2e2d | 3155 | static VEC(static_tracepoint_marker_p) * |
25e4902b AHJ |
3156 | remote_static_tracepoint_markers_by_strid (struct target_ops *self, |
3157 | const char *strid) | |
cf7f2e2d JM |
3158 | { |
3159 | struct remote_state *rs = get_remote_state (); | |
3160 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
3161 | struct static_tracepoint_marker *marker = NULL; | |
3162 | struct cleanup *old_chain; | |
3163 | char *p; | |
3164 | ||
3165 | /* Ask for a first packet of static tracepoint marker | |
3166 | definition. */ | |
3167 | putpkt ("qTfSTM"); | |
3168 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3169 | p = rs->buf; | |
3170 | if (*p == 'E') | |
3171 | error (_("Remote failure reply: %s"), p); | |
3172 | ||
3173 | old_chain = make_cleanup (free_current_marker, &marker); | |
3174 | ||
3175 | while (*p++ == 'm') | |
3176 | { | |
3177 | if (marker == NULL) | |
3178 | marker = XCNEW (struct static_tracepoint_marker); | |
3179 | ||
3180 | do | |
3181 | { | |
3182 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
3183 | ||
3184 | if (strid == NULL || strcmp (strid, marker->str_id) == 0) | |
3185 | { | |
3186 | VEC_safe_push (static_tracepoint_marker_p, | |
3187 | markers, marker); | |
3188 | marker = NULL; | |
3189 | } | |
3190 | else | |
3191 | { | |
3192 | release_static_tracepoint_marker (marker); | |
3193 | memset (marker, 0, sizeof (*marker)); | |
3194 | } | |
3195 | } | |
3196 | while (*p++ == ','); /* comma-separated list */ | |
3197 | /* Ask for another packet of static tracepoint definition. */ | |
3198 | putpkt ("qTsSTM"); | |
3199 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3200 | p = rs->buf; | |
3201 | } | |
3202 | ||
3203 | do_cleanups (old_chain); | |
3204 | return markers; | |
3205 | } | |
3206 | ||
3207 | \f | |
3208 | /* Implement the to_get_ada_task_ptid function for the remote targets. */ | |
3209 | ||
3210 | static ptid_t | |
25e4902b | 3211 | remote_get_ada_task_ptid (struct target_ops *self, long lwp, long thread) |
cf7f2e2d | 3212 | { |
25e4902b | 3213 | return ptid_build (ptid_get_pid (inferior_ptid), lwp, 0); |
cf7f2e2d JM |
3214 | } |
3215 | \f | |
3216 | ||
5796c8dc SS |
3217 | /* Restart the remote side; this is an extended protocol operation. */ |
3218 | ||
3219 | static void | |
3220 | extended_remote_restart (void) | |
3221 | { | |
3222 | struct remote_state *rs = get_remote_state (); | |
3223 | ||
3224 | /* Send the restart command; for reasons I don't understand the | |
3225 | remote side really expects a number after the "R". */ | |
3226 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); | |
3227 | putpkt (rs->buf); | |
3228 | ||
3229 | remote_fileio_reset (); | |
3230 | } | |
3231 | \f | |
3232 | /* Clean up connection to a remote debugger. */ | |
3233 | ||
3234 | static void | |
25e4902b | 3235 | remote_close (struct target_ops *self) |
5796c8dc | 3236 | { |
25e4902b AHJ |
3237 | struct remote_state *rs = get_remote_state (); |
3238 | ||
3239 | if (rs->remote_desc == NULL) | |
5796c8dc SS |
3240 | return; /* already closed */ |
3241 | ||
3242 | /* Make sure we leave stdin registered in the event loop, and we | |
3243 | don't leave the async SIGINT signal handler installed. */ | |
25e4902b | 3244 | remote_terminal_ours (self); |
5796c8dc | 3245 | |
25e4902b AHJ |
3246 | serial_close (rs->remote_desc); |
3247 | rs->remote_desc = NULL; | |
5796c8dc SS |
3248 | |
3249 | /* We don't have a connection to the remote stub anymore. Get rid | |
c50c785c JM |
3250 | of all the inferiors and their threads we were controlling. |
3251 | Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame | |
3252 | will be unable to find the thread corresponding to (pid, 0, 0). */ | |
cf7f2e2d | 3253 | inferior_ptid = null_ptid; |
c50c785c | 3254 | discard_all_inferiors (); |
5796c8dc | 3255 | |
25e4902b AHJ |
3256 | /* We are closing the remote target, so we should discard |
3257 | everything of this target. */ | |
3258 | discard_pending_stop_replies_in_queue (rs); | |
5796c8dc SS |
3259 | |
3260 | if (remote_async_inferior_event_token) | |
3261 | delete_async_event_handler (&remote_async_inferior_event_token); | |
ef5ccd6c | 3262 | |
25e4902b AHJ |
3263 | remote_notif_state_xfree (rs->notif_state); |
3264 | ||
3265 | trace_reset_local_state (); | |
5796c8dc SS |
3266 | } |
3267 | ||
3268 | /* Query the remote side for the text, data and bss offsets. */ | |
3269 | ||
3270 | static void | |
3271 | get_offsets (void) | |
3272 | { | |
3273 | struct remote_state *rs = get_remote_state (); | |
3274 | char *buf; | |
3275 | char *ptr; | |
3276 | int lose, num_segments = 0, do_sections, do_segments; | |
3277 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
3278 | struct section_offsets *offs; | |
3279 | struct symfile_segment_data *data; | |
3280 | ||
3281 | if (symfile_objfile == NULL) | |
3282 | return; | |
3283 | ||
3284 | putpkt ("qOffsets"); | |
3285 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3286 | buf = rs->buf; | |
3287 | ||
3288 | if (buf[0] == '\000') | |
3289 | return; /* Return silently. Stub doesn't support | |
3290 | this command. */ | |
3291 | if (buf[0] == 'E') | |
3292 | { | |
3293 | warning (_("Remote failure reply: %s"), buf); | |
3294 | return; | |
3295 | } | |
3296 | ||
3297 | /* Pick up each field in turn. This used to be done with scanf, but | |
3298 | scanf will make trouble if CORE_ADDR size doesn't match | |
3299 | conversion directives correctly. The following code will work | |
3300 | with any size of CORE_ADDR. */ | |
3301 | text_addr = data_addr = bss_addr = 0; | |
3302 | ptr = buf; | |
3303 | lose = 0; | |
3304 | ||
25e4902b | 3305 | if (startswith (ptr, "Text=")) |
5796c8dc SS |
3306 | { |
3307 | ptr += 5; | |
3308 | /* Don't use strtol, could lose on big values. */ | |
3309 | while (*ptr && *ptr != ';') | |
3310 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
3311 | ||
25e4902b | 3312 | if (startswith (ptr, ";Data=")) |
5796c8dc SS |
3313 | { |
3314 | ptr += 6; | |
3315 | while (*ptr && *ptr != ';') | |
3316 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3317 | } | |
3318 | else | |
3319 | lose = 1; | |
3320 | ||
25e4902b | 3321 | if (!lose && startswith (ptr, ";Bss=")) |
5796c8dc SS |
3322 | { |
3323 | ptr += 5; | |
3324 | while (*ptr && *ptr != ';') | |
3325 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
3326 | ||
3327 | if (bss_addr != data_addr) | |
3328 | warning (_("Target reported unsupported offsets: %s"), buf); | |
3329 | } | |
3330 | else | |
3331 | lose = 1; | |
3332 | } | |
25e4902b | 3333 | else if (startswith (ptr, "TextSeg=")) |
5796c8dc SS |
3334 | { |
3335 | ptr += 8; | |
3336 | /* Don't use strtol, could lose on big values. */ | |
3337 | while (*ptr && *ptr != ';') | |
3338 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
3339 | num_segments = 1; | |
3340 | ||
25e4902b | 3341 | if (startswith (ptr, ";DataSeg=")) |
5796c8dc SS |
3342 | { |
3343 | ptr += 9; | |
3344 | while (*ptr && *ptr != ';') | |
3345 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3346 | num_segments++; | |
3347 | } | |
3348 | } | |
3349 | else | |
3350 | lose = 1; | |
3351 | ||
3352 | if (lose) | |
3353 | error (_("Malformed response to offset query, %s"), buf); | |
3354 | else if (*ptr != '\0') | |
3355 | warning (_("Target reported unsupported offsets: %s"), buf); | |
3356 | ||
3357 | offs = ((struct section_offsets *) | |
3358 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); | |
3359 | memcpy (offs, symfile_objfile->section_offsets, | |
3360 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); | |
3361 | ||
3362 | data = get_symfile_segment_data (symfile_objfile->obfd); | |
3363 | do_segments = (data != NULL); | |
3364 | do_sections = num_segments == 0; | |
3365 | ||
3366 | if (num_segments > 0) | |
3367 | { | |
3368 | segments[0] = text_addr; | |
3369 | segments[1] = data_addr; | |
3370 | } | |
3371 | /* If we have two segments, we can still try to relocate everything | |
3372 | by assuming that the .text and .data offsets apply to the whole | |
3373 | text and data segments. Convert the offsets given in the packet | |
3374 | to base addresses for symfile_map_offsets_to_segments. */ | |
3375 | else if (data && data->num_segments == 2) | |
3376 | { | |
3377 | segments[0] = data->segment_bases[0] + text_addr; | |
3378 | segments[1] = data->segment_bases[1] + data_addr; | |
3379 | num_segments = 2; | |
3380 | } | |
3381 | /* If the object file has only one segment, assume that it is text | |
3382 | rather than data; main programs with no writable data are rare, | |
3383 | but programs with no code are useless. Of course the code might | |
3384 | have ended up in the data segment... to detect that we would need | |
3385 | the permissions here. */ | |
3386 | else if (data && data->num_segments == 1) | |
3387 | { | |
3388 | segments[0] = data->segment_bases[0] + text_addr; | |
3389 | num_segments = 1; | |
3390 | } | |
3391 | /* There's no way to relocate by segment. */ | |
3392 | else | |
3393 | do_segments = 0; | |
3394 | ||
3395 | if (do_segments) | |
3396 | { | |
3397 | int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data, | |
3398 | offs, num_segments, segments); | |
3399 | ||
3400 | if (ret == 0 && !do_sections) | |
c50c785c JM |
3401 | error (_("Can not handle qOffsets TextSeg " |
3402 | "response with this symbol file")); | |
5796c8dc SS |
3403 | |
3404 | if (ret > 0) | |
3405 | do_sections = 0; | |
3406 | } | |
3407 | ||
3408 | if (data) | |
3409 | free_symfile_segment_data (data); | |
3410 | ||
3411 | if (do_sections) | |
3412 | { | |
3413 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; | |
3414 | ||
c50c785c JM |
3415 | /* This is a temporary kludge to force data and bss to use the |
3416 | same offsets because that's what nlmconv does now. The real | |
3417 | solution requires changes to the stub and remote.c that I | |
3418 | don't have time to do right now. */ | |
5796c8dc SS |
3419 | |
3420 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; | |
3421 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
3422 | } | |
3423 | ||
3424 | objfile_relocate (symfile_objfile, offs); | |
3425 | } | |
3426 | ||
3427 | /* Callback for iterate_over_threads. Set the STOP_REQUESTED flags in | |
3428 | threads we know are stopped already. This is used during the | |
3429 | initial remote connection in non-stop mode --- threads that are | |
3430 | reported as already being stopped are left stopped. */ | |
3431 | ||
3432 | static int | |
3433 | set_stop_requested_callback (struct thread_info *thread, void *data) | |
3434 | { | |
3435 | /* If we have a stop reply for this thread, it must be stopped. */ | |
3436 | if (peek_stop_reply (thread->ptid)) | |
3437 | set_stop_requested (thread->ptid, 1); | |
3438 | ||
3439 | return 0; | |
3440 | } | |
3441 | ||
cf7f2e2d JM |
3442 | /* Send interrupt_sequence to remote target. */ |
3443 | static void | |
c50c785c | 3444 | send_interrupt_sequence (void) |
cf7f2e2d | 3445 | { |
25e4902b AHJ |
3446 | struct remote_state *rs = get_remote_state (); |
3447 | ||
cf7f2e2d | 3448 | if (interrupt_sequence_mode == interrupt_sequence_control_c) |
ef5ccd6c | 3449 | remote_serial_write ("\x03", 1); |
cf7f2e2d | 3450 | else if (interrupt_sequence_mode == interrupt_sequence_break) |
25e4902b | 3451 | serial_send_break (rs->remote_desc); |
cf7f2e2d JM |
3452 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) |
3453 | { | |
25e4902b | 3454 | serial_send_break (rs->remote_desc); |
ef5ccd6c | 3455 | remote_serial_write ("g", 1); |
cf7f2e2d JM |
3456 | } |
3457 | else | |
3458 | internal_error (__FILE__, __LINE__, | |
3459 | _("Invalid value for interrupt_sequence_mode: %s."), | |
3460 | interrupt_sequence_mode); | |
3461 | } | |
3462 | ||
ef5ccd6c JM |
3463 | |
3464 | /* If STOP_REPLY is a T stop reply, look for the "thread" register, | |
3465 | and extract the PTID. Returns NULL_PTID if not found. */ | |
3466 | ||
3467 | static ptid_t | |
3468 | stop_reply_extract_thread (char *stop_reply) | |
3469 | { | |
3470 | if (stop_reply[0] == 'T' && strlen (stop_reply) > 3) | |
3471 | { | |
3472 | char *p; | |
3473 | ||
3474 | /* Txx r:val ; r:val (...) */ | |
3475 | p = &stop_reply[3]; | |
3476 | ||
3477 | /* Look for "register" named "thread". */ | |
3478 | while (*p != '\0') | |
3479 | { | |
3480 | char *p1; | |
3481 | ||
3482 | p1 = strchr (p, ':'); | |
3483 | if (p1 == NULL) | |
3484 | return null_ptid; | |
3485 | ||
3486 | if (strncmp (p, "thread", p1 - p) == 0) | |
3487 | return read_ptid (++p1, &p); | |
3488 | ||
3489 | p1 = strchr (p, ';'); | |
3490 | if (p1 == NULL) | |
3491 | return null_ptid; | |
3492 | p1++; | |
3493 | ||
3494 | p = p1; | |
3495 | } | |
3496 | } | |
3497 | ||
3498 | return null_ptid; | |
3499 | } | |
3500 | ||
25e4902b AHJ |
3501 | /* Determine the remote side's current thread. If we have a stop |
3502 | reply handy (in WAIT_STATUS), maybe it's a T stop reply with a | |
3503 | "thread" register we can extract the current thread from. If not, | |
3504 | ask the remote which is the current thread with qC. The former | |
3505 | method avoids a roundtrip. */ | |
3506 | ||
3507 | static ptid_t | |
3508 | get_current_thread (char *wait_status) | |
3509 | { | |
3510 | ptid_t ptid; | |
3511 | ||
3512 | /* Note we don't use remote_parse_stop_reply as that makes use of | |
3513 | the target architecture, which we haven't yet fully determined at | |
3514 | this point. */ | |
3515 | if (wait_status != NULL) | |
3516 | ptid = stop_reply_extract_thread (wait_status); | |
3517 | if (ptid_equal (ptid, null_ptid)) | |
3518 | ptid = remote_current_thread (inferior_ptid); | |
3519 | ||
3520 | return ptid; | |
3521 | } | |
3522 | ||
ef5ccd6c JM |
3523 | /* Query the remote target for which is the current thread/process, |
3524 | add it to our tables, and update INFERIOR_PTID. The caller is | |
3525 | responsible for setting the state such that the remote end is ready | |
3526 | to return the current thread. | |
3527 | ||
3528 | This function is called after handling the '?' or 'vRun' packets, | |
3529 | whose response is a stop reply from which we can also try | |
3530 | extracting the thread. If the target doesn't support the explicit | |
3531 | qC query, we infer the current thread from that stop reply, passed | |
3532 | in in WAIT_STATUS, which may be NULL. */ | |
3533 | ||
3534 | static void | |
3535 | add_current_inferior_and_thread (char *wait_status) | |
3536 | { | |
3537 | struct remote_state *rs = get_remote_state (); | |
3538 | int fake_pid_p = 0; | |
3539 | ptid_t ptid = null_ptid; | |
3540 | ||
3541 | inferior_ptid = null_ptid; | |
3542 | ||
25e4902b AHJ |
3543 | /* Now, if we have thread information, update inferior_ptid. */ |
3544 | ptid = get_current_thread (wait_status); | |
ef5ccd6c JM |
3545 | |
3546 | if (!ptid_equal (ptid, null_ptid)) | |
3547 | { | |
3548 | if (!remote_multi_process_p (rs)) | |
3549 | fake_pid_p = 1; | |
3550 | ||
3551 | inferior_ptid = ptid; | |
3552 | } | |
3553 | else | |
3554 | { | |
3555 | /* Without this, some commands which require an active target | |
3556 | (such as kill) won't work. This variable serves (at least) | |
3557 | double duty as both the pid of the target process (if it has | |
3558 | such), and as a flag indicating that a target is active. */ | |
3559 | inferior_ptid = magic_null_ptid; | |
3560 | fake_pid_p = 1; | |
3561 | } | |
3562 | ||
25e4902b | 3563 | remote_add_inferior (fake_pid_p, ptid_get_pid (inferior_ptid), -1, 1); |
ef5ccd6c JM |
3564 | |
3565 | /* Add the main thread. */ | |
3566 | add_thread_silent (inferior_ptid); | |
3567 | } | |
3568 | ||
5796c8dc | 3569 | static void |
a45ae5f8 | 3570 | remote_start_remote (int from_tty, struct target_ops *target, int extended_p) |
5796c8dc | 3571 | { |
5796c8dc SS |
3572 | struct remote_state *rs = get_remote_state (); |
3573 | struct packet_config *noack_config; | |
3574 | char *wait_status = NULL; | |
3575 | ||
3576 | immediate_quit++; /* Allow user to interrupt it. */ | |
ef5ccd6c | 3577 | QUIT; |
5796c8dc | 3578 | |
cf7f2e2d JM |
3579 | if (interrupt_on_connect) |
3580 | send_interrupt_sequence (); | |
3581 | ||
c50c785c | 3582 | /* Ack any packet which the remote side has already sent. */ |
25e4902b | 3583 | serial_write (rs->remote_desc, "+", 1); |
c50c785c | 3584 | |
a45ae5f8 JM |
3585 | /* Signal other parts that we're going through the initial setup, |
3586 | and so things may not be stable yet. */ | |
3587 | rs->starting_up = 1; | |
3588 | ||
5796c8dc SS |
3589 | /* The first packet we send to the target is the optional "supported |
3590 | packets" request. If the target can answer this, it will tell us | |
3591 | which later probes to skip. */ | |
3592 | remote_query_supported (); | |
3593 | ||
cf7f2e2d | 3594 | /* If the stub wants to get a QAllow, compose one and send it. */ |
25e4902b AHJ |
3595 | if (packet_support (PACKET_QAllow) != PACKET_DISABLE) |
3596 | remote_set_permissions (target); | |
cf7f2e2d | 3597 | |
5796c8dc SS |
3598 | /* Next, we possibly activate noack mode. |
3599 | ||
3600 | If the QStartNoAckMode packet configuration is set to AUTO, | |
3601 | enable noack mode if the stub reported a wish for it with | |
3602 | qSupported. | |
3603 | ||
3604 | If set to TRUE, then enable noack mode even if the stub didn't | |
3605 | report it in qSupported. If the stub doesn't reply OK, the | |
3606 | session ends with an error. | |
3607 | ||
3608 | If FALSE, then don't activate noack mode, regardless of what the | |
3609 | stub claimed should be the default with qSupported. */ | |
3610 | ||
3611 | noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode]; | |
25e4902b | 3612 | if (packet_config_support (noack_config) != PACKET_DISABLE) |
5796c8dc SS |
3613 | { |
3614 | putpkt ("QStartNoAckMode"); | |
3615 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3616 | if (packet_ok (rs->buf, noack_config) == PACKET_OK) | |
3617 | rs->noack_mode = 1; | |
3618 | } | |
3619 | ||
a45ae5f8 | 3620 | if (extended_p) |
5796c8dc SS |
3621 | { |
3622 | /* Tell the remote that we are using the extended protocol. */ | |
3623 | putpkt ("!"); | |
3624 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3625 | } | |
3626 | ||
ef5ccd6c JM |
3627 | /* Let the target know which signals it is allowed to pass down to |
3628 | the program. */ | |
3629 | update_signals_program_target (); | |
3630 | ||
5796c8dc SS |
3631 | /* Next, if the target can specify a description, read it. We do |
3632 | this before anything involving memory or registers. */ | |
3633 | target_find_description (); | |
3634 | ||
cf7f2e2d JM |
3635 | /* Next, now that we know something about the target, update the |
3636 | address spaces in the program spaces. */ | |
3637 | update_address_spaces (); | |
3638 | ||
5796c8dc SS |
3639 | /* On OSs where the list of libraries is global to all |
3640 | processes, we fetch them early. */ | |
ef5ccd6c | 3641 | if (gdbarch_has_global_solist (target_gdbarch ())) |
a45ae5f8 | 3642 | solib_add (NULL, from_tty, target, auto_solib_add); |
5796c8dc SS |
3643 | |
3644 | if (non_stop) | |
3645 | { | |
25e4902b | 3646 | if (packet_support (PACKET_QNonStop) != PACKET_ENABLE) |
c50c785c JM |
3647 | error (_("Non-stop mode requested, but remote " |
3648 | "does not support non-stop")); | |
5796c8dc SS |
3649 | |
3650 | putpkt ("QNonStop:1"); | |
3651 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3652 | ||
3653 | if (strcmp (rs->buf, "OK") != 0) | |
c50c785c | 3654 | error (_("Remote refused setting non-stop mode with: %s"), rs->buf); |
5796c8dc SS |
3655 | |
3656 | /* Find about threads and processes the stub is already | |
3657 | controlling. We default to adding them in the running state. | |
3658 | The '?' query below will then tell us about which threads are | |
3659 | stopped. */ | |
25e4902b | 3660 | remote_update_thread_list (target); |
5796c8dc | 3661 | } |
25e4902b | 3662 | else if (packet_support (PACKET_QNonStop) == PACKET_ENABLE) |
5796c8dc SS |
3663 | { |
3664 | /* Don't assume that the stub can operate in all-stop mode. | |
ef5ccd6c | 3665 | Request it explicitly. */ |
5796c8dc SS |
3666 | putpkt ("QNonStop:0"); |
3667 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3668 | ||
3669 | if (strcmp (rs->buf, "OK") != 0) | |
c50c785c | 3670 | error (_("Remote refused setting all-stop mode with: %s"), rs->buf); |
5796c8dc SS |
3671 | } |
3672 | ||
25e4902b AHJ |
3673 | /* Upload TSVs regardless of whether the target is running or not. The |
3674 | remote stub, such as GDBserver, may have some predefined or builtin | |
3675 | TSVs, even if the target is not running. */ | |
3676 | if (remote_get_trace_status (target, current_trace_status ()) != -1) | |
3677 | { | |
3678 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
3679 | ||
3680 | remote_upload_trace_state_variables (target, &uploaded_tsvs); | |
3681 | merge_uploaded_trace_state_variables (&uploaded_tsvs); | |
3682 | } | |
3683 | ||
5796c8dc SS |
3684 | /* Check whether the target is running now. */ |
3685 | putpkt ("?"); | |
3686 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3687 | ||
3688 | if (!non_stop) | |
3689 | { | |
ef5ccd6c JM |
3690 | ptid_t ptid; |
3691 | int fake_pid_p = 0; | |
3692 | struct inferior *inf; | |
3693 | ||
5796c8dc SS |
3694 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') |
3695 | { | |
a45ae5f8 | 3696 | if (!extended_p) |
5796c8dc SS |
3697 | error (_("The target is not running (try extended-remote?)")); |
3698 | ||
3699 | /* We're connected, but not running. Drop out before we | |
3700 | call start_remote. */ | |
a45ae5f8 | 3701 | rs->starting_up = 0; |
5796c8dc SS |
3702 | return; |
3703 | } | |
3704 | else | |
3705 | { | |
3706 | /* Save the reply for later. */ | |
3707 | wait_status = alloca (strlen (rs->buf) + 1); | |
3708 | strcpy (wait_status, rs->buf); | |
3709 | } | |
3710 | ||
25e4902b AHJ |
3711 | /* Fetch thread list. */ |
3712 | target_update_thread_list (); | |
3713 | ||
5796c8dc SS |
3714 | /* Let the stub know that we want it to return the thread. */ |
3715 | set_continue_thread (minus_one_ptid); | |
3716 | ||
25e4902b AHJ |
3717 | if (thread_count () == 0) |
3718 | { | |
3719 | /* Target has no concept of threads at all. GDB treats | |
3720 | non-threaded target as single-threaded; add a main | |
3721 | thread. */ | |
3722 | add_current_inferior_and_thread (wait_status); | |
3723 | } | |
3724 | else | |
3725 | { | |
3726 | /* We have thread information; select the thread the target | |
3727 | says should be current. If we're reconnecting to a | |
3728 | multi-threaded program, this will ideally be the thread | |
3729 | that last reported an event before GDB disconnected. */ | |
3730 | inferior_ptid = get_current_thread (wait_status); | |
3731 | if (ptid_equal (inferior_ptid, null_ptid)) | |
3732 | { | |
3733 | /* Odd... The target was able to list threads, but not | |
3734 | tell us which thread was current (no "thread" | |
3735 | register in T stop reply?). Just pick the first | |
3736 | thread in the thread list then. */ | |
3737 | inferior_ptid = thread_list->ptid; | |
3738 | } | |
3739 | } | |
5796c8dc | 3740 | |
a45ae5f8 JM |
3741 | /* init_wait_for_inferior should be called before get_offsets in order |
3742 | to manage `inserted' flag in bp loc in a correct state. | |
3743 | breakpoint_init_inferior, called from init_wait_for_inferior, set | |
3744 | `inserted' flag to 0, while before breakpoint_re_set, called from | |
3745 | start_remote, set `inserted' flag to 1. In the initialization of | |
3746 | inferior, breakpoint_init_inferior should be called first, and then | |
3747 | breakpoint_re_set can be called. If this order is broken, state of | |
3748 | `inserted' flag is wrong, and cause some problems on breakpoint | |
3749 | manipulation. */ | |
3750 | init_wait_for_inferior (); | |
3751 | ||
5796c8dc SS |
3752 | get_offsets (); /* Get text, data & bss offsets. */ |
3753 | ||
3754 | /* If we could not find a description using qXfer, and we know | |
3755 | how to do it some other way, try again. This is not | |
3756 | supported for non-stop; it could be, but it is tricky if | |
3757 | there are no stopped threads when we connect. */ | |
a45ae5f8 | 3758 | if (remote_read_description_p (target) |
ef5ccd6c | 3759 | && gdbarch_target_desc (target_gdbarch ()) == NULL) |
5796c8dc SS |
3760 | { |
3761 | target_clear_description (); | |
3762 | target_find_description (); | |
3763 | } | |
3764 | ||
3765 | /* Use the previously fetched status. */ | |
3766 | gdb_assert (wait_status != NULL); | |
3767 | strcpy (rs->buf, wait_status); | |
3768 | rs->cached_wait_status = 1; | |
3769 | ||
3770 | immediate_quit--; | |
a45ae5f8 | 3771 | start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
5796c8dc SS |
3772 | } |
3773 | else | |
3774 | { | |
3775 | /* Clear WFI global state. Do this before finding about new | |
3776 | threads and inferiors, and setting the current inferior. | |
3777 | Otherwise we would clear the proceed status of the current | |
3778 | inferior when we want its stop_soon state to be preserved | |
3779 | (see notice_new_inferior). */ | |
3780 | init_wait_for_inferior (); | |
3781 | ||
3782 | /* In non-stop, we will either get an "OK", meaning that there | |
3783 | are no stopped threads at this time; or, a regular stop | |
3784 | reply. In the latter case, there may be more than one thread | |
3785 | stopped --- we pull them all out using the vStopped | |
3786 | mechanism. */ | |
3787 | if (strcmp (rs->buf, "OK") != 0) | |
3788 | { | |
ef5ccd6c | 3789 | struct notif_client *notif = ¬if_client_stop; |
5796c8dc | 3790 | |
ef5ccd6c JM |
3791 | /* remote_notif_get_pending_replies acks this one, and gets |
3792 | the rest out. */ | |
25e4902b | 3793 | rs->notif_state->pending_event[notif_client_stop.id] |
ef5ccd6c JM |
3794 | = remote_notif_parse (notif, rs->buf); |
3795 | remote_notif_get_pending_events (notif); | |
5796c8dc SS |
3796 | |
3797 | /* Make sure that threads that were stopped remain | |
3798 | stopped. */ | |
3799 | iterate_over_threads (set_stop_requested_callback, NULL); | |
3800 | } | |
3801 | ||
3802 | if (target_can_async_p ()) | |
25e4902b | 3803 | target_async (1); |
5796c8dc SS |
3804 | |
3805 | if (thread_count () == 0) | |
3806 | { | |
a45ae5f8 | 3807 | if (!extended_p) |
5796c8dc SS |
3808 | error (_("The target is not running (try extended-remote?)")); |
3809 | ||
3810 | /* We're connected, but not running. Drop out before we | |
3811 | call start_remote. */ | |
a45ae5f8 | 3812 | rs->starting_up = 0; |
5796c8dc SS |
3813 | return; |
3814 | } | |
3815 | ||
3816 | /* Let the stub know that we want it to return the thread. */ | |
3817 | ||
3818 | /* Force the stub to choose a thread. */ | |
3819 | set_general_thread (null_ptid); | |
3820 | ||
3821 | /* Query it. */ | |
3822 | inferior_ptid = remote_current_thread (minus_one_ptid); | |
3823 | if (ptid_equal (inferior_ptid, minus_one_ptid)) | |
3824 | error (_("remote didn't report the current thread in non-stop mode")); | |
3825 | ||
3826 | get_offsets (); /* Get text, data & bss offsets. */ | |
3827 | ||
3828 | /* In non-stop mode, any cached wait status will be stored in | |
3829 | the stop reply queue. */ | |
3830 | gdb_assert (wait_status == NULL); | |
cf7f2e2d | 3831 | |
a45ae5f8 | 3832 | /* Report all signals during attach/startup. */ |
25e4902b | 3833 | remote_pass_signals (target, 0, NULL); |
5796c8dc SS |
3834 | } |
3835 | ||
3836 | /* If we connected to a live target, do some additional setup. */ | |
3837 | if (target_has_execution) | |
3838 | { | |
25e4902b AHJ |
3839 | if (symfile_objfile) /* No use without a symbol-file. */ |
3840 | remote_check_symbols (); | |
5796c8dc SS |
3841 | } |
3842 | ||
cf7f2e2d JM |
3843 | /* Possibly the target has been engaged in a trace run started |
3844 | previously; find out where things are at. */ | |
25e4902b | 3845 | if (remote_get_trace_status (target, current_trace_status ()) != -1) |
cf7f2e2d JM |
3846 | { |
3847 | struct uploaded_tp *uploaded_tps = NULL; | |
5796c8dc | 3848 | |
cf7f2e2d JM |
3849 | if (current_trace_status ()->running) |
3850 | printf_filtered (_("Trace is already running on the target.\n")); | |
3851 | ||
25e4902b | 3852 | remote_upload_tracepoints (target, &uploaded_tps); |
cf7f2e2d JM |
3853 | |
3854 | merge_uploaded_tracepoints (&uploaded_tps); | |
3855 | } | |
3856 | ||
a45ae5f8 JM |
3857 | /* The thread and inferior lists are now synchronized with the |
3858 | target, our symbols have been relocated, and we're merged the | |
3859 | target's tracepoints with ours. We're done with basic start | |
3860 | up. */ | |
3861 | rs->starting_up = 0; | |
3862 | ||
25e4902b AHJ |
3863 | /* Maybe breakpoints are global and need to be inserted now. */ |
3864 | if (breakpoints_should_be_inserted_now ()) | |
cf7f2e2d JM |
3865 | insert_breakpoints (); |
3866 | } | |
3867 | ||
3868 | /* Open a connection to a remote debugger. | |
5796c8dc SS |
3869 | NAME is the filename used for communication. */ |
3870 | ||
3871 | static void | |
25e4902b | 3872 | remote_open (const char *name, int from_tty) |
5796c8dc SS |
3873 | { |
3874 | remote_open_1 (name, from_tty, &remote_ops, 0); | |
3875 | } | |
3876 | ||
3877 | /* Open a connection to a remote debugger using the extended | |
3878 | remote gdb protocol. NAME is the filename used for communication. */ | |
3879 | ||
3880 | static void | |
25e4902b | 3881 | extended_remote_open (const char *name, int from_tty) |
5796c8dc SS |
3882 | { |
3883 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */); | |
3884 | } | |
3885 | ||
25e4902b AHJ |
3886 | /* Reset all packets back to "unknown support". Called when opening a |
3887 | new connection to a remote target. */ | |
5796c8dc SS |
3888 | |
3889 | static void | |
25e4902b | 3890 | reset_all_packet_configs_support (void) |
5796c8dc SS |
3891 | { |
3892 | int i; | |
cf7f2e2d | 3893 | |
5796c8dc | 3894 | for (i = 0; i < PACKET_MAX; i++) |
25e4902b | 3895 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; |
5796c8dc SS |
3896 | } |
3897 | ||
25e4902b | 3898 | /* Initialize all packet configs. */ |
5796c8dc SS |
3899 | |
3900 | static void | |
25e4902b AHJ |
3901 | init_all_packet_configs (void) |
3902 | { | |
3903 | int i; | |
3904 | ||
3905 | for (i = 0; i < PACKET_MAX; i++) | |
3906 | { | |
3907 | remote_protocol_packets[i].detect = AUTO_BOOLEAN_AUTO; | |
3908 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; | |
3909 | } | |
3910 | } | |
3911 | ||
3912 | /* Symbol look-up. */ | |
3913 | ||
3914 | static void | |
3915 | remote_check_symbols (void) | |
5796c8dc SS |
3916 | { |
3917 | struct remote_state *rs = get_remote_state (); | |
3918 | char *msg, *reply, *tmp; | |
25e4902b | 3919 | struct bound_minimal_symbol sym; |
5796c8dc SS |
3920 | int end; |
3921 | ||
c50c785c JM |
3922 | /* The remote side has no concept of inferiors that aren't running |
3923 | yet, it only knows about running processes. If we're connected | |
3924 | but our current inferior is not running, we should not invite the | |
3925 | remote target to request symbol lookups related to its | |
3926 | (unrelated) current process. */ | |
3927 | if (!target_has_execution) | |
3928 | return; | |
3929 | ||
25e4902b | 3930 | if (packet_support (PACKET_qSymbol) == PACKET_DISABLE) |
5796c8dc SS |
3931 | return; |
3932 | ||
c50c785c JM |
3933 | /* Make sure the remote is pointing at the right process. Note |
3934 | there's no way to select "no process". */ | |
5796c8dc SS |
3935 | set_general_process (); |
3936 | ||
3937 | /* Allocate a message buffer. We can't reuse the input buffer in RS, | |
3938 | because we need both at the same time. */ | |
3939 | msg = alloca (get_remote_packet_size ()); | |
3940 | ||
3941 | /* Invite target to request symbol lookups. */ | |
3942 | ||
3943 | putpkt ("qSymbol::"); | |
3944 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3945 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSymbol]); | |
3946 | reply = rs->buf; | |
3947 | ||
25e4902b | 3948 | while (startswith (reply, "qSymbol:")) |
5796c8dc | 3949 | { |
25e4902b AHJ |
3950 | struct bound_minimal_symbol sym; |
3951 | ||
5796c8dc SS |
3952 | tmp = &reply[8]; |
3953 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); | |
3954 | msg[end] = '\0'; | |
3955 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
25e4902b | 3956 | if (sym.minsym == NULL) |
5796c8dc SS |
3957 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
3958 | else | |
3959 | { | |
ef5ccd6c | 3960 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
25e4902b | 3961 | CORE_ADDR sym_addr = BMSYMBOL_VALUE_ADDRESS (sym); |
5796c8dc SS |
3962 | |
3963 | /* If this is a function address, return the start of code | |
3964 | instead of any data function descriptor. */ | |
ef5ccd6c | 3965 | sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch (), |
5796c8dc SS |
3966 | sym_addr, |
3967 | ¤t_target); | |
3968 | ||
3969 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", | |
3970 | phex_nz (sym_addr, addr_size), &reply[8]); | |
3971 | } | |
3972 | ||
3973 | putpkt (msg); | |
3974 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3975 | reply = rs->buf; | |
3976 | } | |
3977 | } | |
3978 | ||
3979 | static struct serial * | |
25e4902b | 3980 | remote_serial_open (const char *name) |
5796c8dc SS |
3981 | { |
3982 | static int udp_warning = 0; | |
3983 | ||
3984 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
3985 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
3986 | serial connection is reliable and not the serial connection promising | |
3987 | to be. */ | |
25e4902b | 3988 | if (!udp_warning && startswith (name, "udp:")) |
5796c8dc | 3989 | { |
c50c785c JM |
3990 | warning (_("The remote protocol may be unreliable over UDP.\n" |
3991 | "Some events may be lost, rendering further debugging " | |
3992 | "impossible.")); | |
5796c8dc SS |
3993 | udp_warning = 1; |
3994 | } | |
3995 | ||
3996 | return serial_open (name); | |
3997 | } | |
3998 | ||
cf7f2e2d JM |
3999 | /* Inform the target of our permission settings. The permission flags |
4000 | work without this, but if the target knows the settings, it can do | |
4001 | a couple things. First, it can add its own check, to catch cases | |
4002 | that somehow manage to get by the permissions checks in target | |
4003 | methods. Second, if the target is wired to disallow particular | |
4004 | settings (for instance, a system in the field that is not set up to | |
4005 | be able to stop at a breakpoint), it can object to any unavailable | |
4006 | permissions. */ | |
4007 | ||
4008 | void | |
25e4902b | 4009 | remote_set_permissions (struct target_ops *self) |
cf7f2e2d JM |
4010 | { |
4011 | struct remote_state *rs = get_remote_state (); | |
4012 | ||
ef5ccd6c JM |
4013 | xsnprintf (rs->buf, get_remote_packet_size (), "QAllow:" |
4014 | "WriteReg:%x;WriteMem:%x;" | |
4015 | "InsertBreak:%x;InsertTrace:%x;" | |
4016 | "InsertFastTrace:%x;Stop:%x", | |
4017 | may_write_registers, may_write_memory, | |
4018 | may_insert_breakpoints, may_insert_tracepoints, | |
4019 | may_insert_fast_tracepoints, may_stop); | |
cf7f2e2d JM |
4020 | putpkt (rs->buf); |
4021 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4022 | ||
4023 | /* If the target didn't like the packet, warn the user. Do not try | |
4024 | to undo the user's settings, that would just be maddening. */ | |
4025 | if (strcmp (rs->buf, "OK") != 0) | |
c50c785c | 4026 | warning (_("Remote refused setting permissions with: %s"), rs->buf); |
cf7f2e2d JM |
4027 | } |
4028 | ||
5796c8dc SS |
4029 | /* This type describes each known response to the qSupported |
4030 | packet. */ | |
4031 | struct protocol_feature | |
4032 | { | |
4033 | /* The name of this protocol feature. */ | |
4034 | const char *name; | |
4035 | ||
4036 | /* The default for this protocol feature. */ | |
4037 | enum packet_support default_support; | |
4038 | ||
4039 | /* The function to call when this feature is reported, or after | |
4040 | qSupported processing if the feature is not supported. | |
4041 | The first argument points to this structure. The second | |
4042 | argument indicates whether the packet requested support be | |
4043 | enabled, disabled, or probed (or the default, if this function | |
4044 | is being called at the end of processing and this feature was | |
4045 | not reported). The third argument may be NULL; if not NULL, it | |
4046 | is a NUL-terminated string taken from the packet following | |
4047 | this feature's name and an equals sign. */ | |
4048 | void (*func) (const struct protocol_feature *, enum packet_support, | |
4049 | const char *); | |
4050 | ||
4051 | /* The corresponding packet for this feature. Only used if | |
4052 | FUNC is remote_supported_packet. */ | |
4053 | int packet; | |
4054 | }; | |
4055 | ||
4056 | static void | |
4057 | remote_supported_packet (const struct protocol_feature *feature, | |
4058 | enum packet_support support, | |
4059 | const char *argument) | |
4060 | { | |
4061 | if (argument) | |
4062 | { | |
4063 | warning (_("Remote qSupported response supplied an unexpected value for" | |
4064 | " \"%s\"."), feature->name); | |
4065 | return; | |
4066 | } | |
4067 | ||
25e4902b | 4068 | remote_protocol_packets[feature->packet].support = support; |
5796c8dc SS |
4069 | } |
4070 | ||
4071 | static void | |
4072 | remote_packet_size (const struct protocol_feature *feature, | |
4073 | enum packet_support support, const char *value) | |
4074 | { | |
4075 | struct remote_state *rs = get_remote_state (); | |
4076 | ||
4077 | int packet_size; | |
4078 | char *value_end; | |
4079 | ||
4080 | if (support != PACKET_ENABLE) | |
4081 | return; | |
4082 | ||
4083 | if (value == NULL || *value == '\0') | |
4084 | { | |
4085 | warning (_("Remote target reported \"%s\" without a size."), | |
4086 | feature->name); | |
4087 | return; | |
4088 | } | |
4089 | ||
4090 | errno = 0; | |
4091 | packet_size = strtol (value, &value_end, 16); | |
4092 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
4093 | { | |
4094 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
4095 | feature->name, value); | |
4096 | return; | |
4097 | } | |
4098 | ||
4099 | if (packet_size > MAX_REMOTE_PACKET_SIZE) | |
4100 | { | |
4101 | warning (_("limiting remote suggested packet size (%d bytes) to %d"), | |
4102 | packet_size, MAX_REMOTE_PACKET_SIZE); | |
4103 | packet_size = MAX_REMOTE_PACKET_SIZE; | |
4104 | } | |
4105 | ||
4106 | /* Record the new maximum packet size. */ | |
4107 | rs->explicit_packet_size = packet_size; | |
4108 | } | |
4109 | ||
25e4902b | 4110 | static const struct protocol_feature remote_protocol_features[] = { |
5796c8dc SS |
4111 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
4112 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, | |
4113 | PACKET_qXfer_auxv }, | |
25e4902b AHJ |
4114 | { "qXfer:exec-file:read", PACKET_DISABLE, remote_supported_packet, |
4115 | PACKET_qXfer_exec_file }, | |
5796c8dc SS |
4116 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
4117 | PACKET_qXfer_features }, | |
4118 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, | |
4119 | PACKET_qXfer_libraries }, | |
a45ae5f8 JM |
4120 | { "qXfer:libraries-svr4:read", PACKET_DISABLE, remote_supported_packet, |
4121 | PACKET_qXfer_libraries_svr4 }, | |
25e4902b AHJ |
4122 | { "augmented-libraries-svr4-read", PACKET_DISABLE, |
4123 | remote_supported_packet, PACKET_augmented_libraries_svr4_read_feature }, | |
5796c8dc SS |
4124 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
4125 | PACKET_qXfer_memory_map }, | |
4126 | { "qXfer:spu:read", PACKET_DISABLE, remote_supported_packet, | |
4127 | PACKET_qXfer_spu_read }, | |
4128 | { "qXfer:spu:write", PACKET_DISABLE, remote_supported_packet, | |
4129 | PACKET_qXfer_spu_write }, | |
4130 | { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet, | |
4131 | PACKET_qXfer_osdata }, | |
cf7f2e2d JM |
4132 | { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet, |
4133 | PACKET_qXfer_threads }, | |
c50c785c JM |
4134 | { "qXfer:traceframe-info:read", PACKET_DISABLE, remote_supported_packet, |
4135 | PACKET_qXfer_traceframe_info }, | |
5796c8dc SS |
4136 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
4137 | PACKET_QPassSignals }, | |
ef5ccd6c JM |
4138 | { "QProgramSignals", PACKET_DISABLE, remote_supported_packet, |
4139 | PACKET_QProgramSignals }, | |
5796c8dc SS |
4140 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
4141 | PACKET_QStartNoAckMode }, | |
25e4902b AHJ |
4142 | { "multiprocess", PACKET_DISABLE, remote_supported_packet, |
4143 | PACKET_multiprocess_feature }, | |
4144 | { "QNonStop", PACKET_DISABLE, remote_supported_packet, PACKET_QNonStop }, | |
5796c8dc SS |
4145 | { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet, |
4146 | PACKET_qXfer_siginfo_read }, | |
4147 | { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet, | |
4148 | PACKET_qXfer_siginfo_write }, | |
25e4902b | 4149 | { "ConditionalTracepoints", PACKET_DISABLE, remote_supported_packet, |
5796c8dc | 4150 | PACKET_ConditionalTracepoints }, |
25e4902b | 4151 | { "ConditionalBreakpoints", PACKET_DISABLE, remote_supported_packet, |
ef5ccd6c | 4152 | PACKET_ConditionalBreakpoints }, |
25e4902b | 4153 | { "BreakpointCommands", PACKET_DISABLE, remote_supported_packet, |
ef5ccd6c | 4154 | PACKET_BreakpointCommands }, |
25e4902b | 4155 | { "FastTracepoints", PACKET_DISABLE, remote_supported_packet, |
cf7f2e2d | 4156 | PACKET_FastTracepoints }, |
25e4902b | 4157 | { "StaticTracepoints", PACKET_DISABLE, remote_supported_packet, |
cf7f2e2d | 4158 | PACKET_StaticTracepoints }, |
25e4902b | 4159 | {"InstallInTrace", PACKET_DISABLE, remote_supported_packet, |
a45ae5f8 | 4160 | PACKET_InstallInTrace}, |
25e4902b AHJ |
4161 | { "DisconnectedTracing", PACKET_DISABLE, remote_supported_packet, |
4162 | PACKET_DisconnectedTracing_feature }, | |
5796c8dc SS |
4163 | { "ReverseContinue", PACKET_DISABLE, remote_supported_packet, |
4164 | PACKET_bc }, | |
4165 | { "ReverseStep", PACKET_DISABLE, remote_supported_packet, | |
4166 | PACKET_bs }, | |
cf7f2e2d JM |
4167 | { "TracepointSource", PACKET_DISABLE, remote_supported_packet, |
4168 | PACKET_TracepointSource }, | |
4169 | { "QAllow", PACKET_DISABLE, remote_supported_packet, | |
4170 | PACKET_QAllow }, | |
25e4902b AHJ |
4171 | { "EnableDisableTracepoints", PACKET_DISABLE, remote_supported_packet, |
4172 | PACKET_EnableDisableTracepoints_feature }, | |
a45ae5f8 JM |
4173 | { "qXfer:fdpic:read", PACKET_DISABLE, remote_supported_packet, |
4174 | PACKET_qXfer_fdpic }, | |
ef5ccd6c JM |
4175 | { "qXfer:uib:read", PACKET_DISABLE, remote_supported_packet, |
4176 | PACKET_qXfer_uib }, | |
a45ae5f8 JM |
4177 | { "QDisableRandomization", PACKET_DISABLE, remote_supported_packet, |
4178 | PACKET_QDisableRandomization }, | |
ef5ccd6c JM |
4179 | { "QAgent", PACKET_DISABLE, remote_supported_packet, PACKET_QAgent}, |
4180 | { "QTBuffer:size", PACKET_DISABLE, | |
4181 | remote_supported_packet, PACKET_QTBuffer_size}, | |
25e4902b | 4182 | { "tracenz", PACKET_DISABLE, remote_supported_packet, PACKET_tracenz_feature }, |
ef5ccd6c JM |
4183 | { "Qbtrace:off", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_off }, |
4184 | { "Qbtrace:bts", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_bts }, | |
25e4902b | 4185 | { "Qbtrace:pt", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_pt }, |
ef5ccd6c | 4186 | { "qXfer:btrace:read", PACKET_DISABLE, remote_supported_packet, |
25e4902b AHJ |
4187 | PACKET_qXfer_btrace }, |
4188 | { "qXfer:btrace-conf:read", PACKET_DISABLE, remote_supported_packet, | |
4189 | PACKET_qXfer_btrace_conf }, | |
4190 | { "Qbtrace-conf:bts:size", PACKET_DISABLE, remote_supported_packet, | |
4191 | PACKET_Qbtrace_conf_bts_size }, | |
4192 | { "swbreak", PACKET_DISABLE, remote_supported_packet, PACKET_swbreak_feature }, | |
4193 | { "hwbreak", PACKET_DISABLE, remote_supported_packet, PACKET_hwbreak_feature }, | |
4194 | { "fork-events", PACKET_DISABLE, remote_supported_packet, | |
4195 | PACKET_fork_event_feature }, | |
4196 | { "vfork-events", PACKET_DISABLE, remote_supported_packet, | |
4197 | PACKET_vfork_event_feature }, | |
4198 | { "Qbtrace-conf:pt:size", PACKET_DISABLE, remote_supported_packet, | |
4199 | PACKET_Qbtrace_conf_pt_size } | |
5796c8dc SS |
4200 | }; |
4201 | ||
cf7f2e2d JM |
4202 | static char *remote_support_xml; |
4203 | ||
4204 | /* Register string appended to "xmlRegisters=" in qSupported query. */ | |
4205 | ||
4206 | void | |
4207 | register_remote_support_xml (const char *xml) | |
4208 | { | |
4209 | #if defined(HAVE_LIBEXPAT) | |
4210 | if (remote_support_xml == NULL) | |
4211 | remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL); | |
4212 | else | |
4213 | { | |
4214 | char *copy = xstrdup (remote_support_xml + 13); | |
4215 | char *p = strtok (copy, ","); | |
4216 | ||
4217 | do | |
4218 | { | |
4219 | if (strcmp (p, xml) == 0) | |
4220 | { | |
4221 | /* already there */ | |
4222 | xfree (copy); | |
4223 | return; | |
4224 | } | |
4225 | } | |
4226 | while ((p = strtok (NULL, ",")) != NULL); | |
4227 | xfree (copy); | |
4228 | ||
4229 | remote_support_xml = reconcat (remote_support_xml, | |
4230 | remote_support_xml, ",", xml, | |
4231 | (char *) NULL); | |
4232 | } | |
4233 | #endif | |
4234 | } | |
4235 | ||
4236 | static char * | |
4237 | remote_query_supported_append (char *msg, const char *append) | |
4238 | { | |
4239 | if (msg) | |
4240 | return reconcat (msg, msg, ";", append, (char *) NULL); | |
4241 | else | |
4242 | return xstrdup (append); | |
4243 | } | |
4244 | ||
5796c8dc SS |
4245 | static void |
4246 | remote_query_supported (void) | |
4247 | { | |
4248 | struct remote_state *rs = get_remote_state (); | |
4249 | char *next; | |
4250 | int i; | |
4251 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
4252 | ||
4253 | /* The packet support flags are handled differently for this packet | |
4254 | than for most others. We treat an error, a disabled packet, and | |
4255 | an empty response identically: any features which must be reported | |
4256 | to be used will be automatically disabled. An empty buffer | |
4257 | accomplishes this, since that is also the representation for a list | |
4258 | containing no features. */ | |
4259 | ||
4260 | rs->buf[0] = 0; | |
25e4902b | 4261 | if (packet_support (PACKET_qSupported) != PACKET_DISABLE) |
5796c8dc | 4262 | { |
cf7f2e2d JM |
4263 | char *q = NULL; |
4264 | struct cleanup *old_chain = make_cleanup (free_current_contents, &q); | |
4265 | ||
ef5ccd6c | 4266 | q = remote_query_supported_append (q, "multiprocess+"); |
cf7f2e2d | 4267 | |
25e4902b AHJ |
4268 | if (packet_set_cmd_state (PACKET_swbreak_feature) != AUTO_BOOLEAN_FALSE) |
4269 | q = remote_query_supported_append (q, "swbreak+"); | |
4270 | if (packet_set_cmd_state (PACKET_hwbreak_feature) != AUTO_BOOLEAN_FALSE) | |
4271 | q = remote_query_supported_append (q, "hwbreak+"); | |
4272 | ||
cf7f2e2d JM |
4273 | if (remote_support_xml) |
4274 | q = remote_query_supported_append (q, remote_support_xml); | |
4275 | ||
4276 | q = remote_query_supported_append (q, "qRelocInsn+"); | |
4277 | ||
25e4902b AHJ |
4278 | if (rs->extended) |
4279 | { | |
4280 | if (packet_set_cmd_state (PACKET_fork_event_feature) | |
4281 | != AUTO_BOOLEAN_FALSE) | |
4282 | q = remote_query_supported_append (q, "fork-events+"); | |
4283 | if (packet_set_cmd_state (PACKET_vfork_event_feature) | |
4284 | != AUTO_BOOLEAN_FALSE) | |
4285 | q = remote_query_supported_append (q, "vfork-events+"); | |
4286 | } | |
4287 | ||
cf7f2e2d JM |
4288 | q = reconcat (q, "qSupported:", q, (char *) NULL); |
4289 | putpkt (q); | |
4290 | ||
4291 | do_cleanups (old_chain); | |
5796c8dc SS |
4292 | |
4293 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4294 | ||
4295 | /* If an error occured, warn, but do not return - just reset the | |
4296 | buffer to empty and go on to disable features. */ | |
4297 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
4298 | == PACKET_ERROR) | |
4299 | { | |
4300 | warning (_("Remote failure reply: %s"), rs->buf); | |
4301 | rs->buf[0] = 0; | |
4302 | } | |
4303 | } | |
4304 | ||
4305 | memset (seen, 0, sizeof (seen)); | |
4306 | ||
4307 | next = rs->buf; | |
4308 | while (*next) | |
4309 | { | |
4310 | enum packet_support is_supported; | |
4311 | char *p, *end, *name_end, *value; | |
4312 | ||
4313 | /* First separate out this item from the rest of the packet. If | |
4314 | there's another item after this, we overwrite the separator | |
4315 | (terminated strings are much easier to work with). */ | |
4316 | p = next; | |
4317 | end = strchr (p, ';'); | |
4318 | if (end == NULL) | |
4319 | { | |
4320 | end = p + strlen (p); | |
4321 | next = end; | |
4322 | } | |
4323 | else | |
4324 | { | |
4325 | *end = '\0'; | |
4326 | next = end + 1; | |
4327 | ||
4328 | if (end == p) | |
4329 | { | |
4330 | warning (_("empty item in \"qSupported\" response")); | |
4331 | continue; | |
4332 | } | |
4333 | } | |
4334 | ||
4335 | name_end = strchr (p, '='); | |
4336 | if (name_end) | |
4337 | { | |
4338 | /* This is a name=value entry. */ | |
4339 | is_supported = PACKET_ENABLE; | |
4340 | value = name_end + 1; | |
4341 | *name_end = '\0'; | |
4342 | } | |
4343 | else | |
4344 | { | |
4345 | value = NULL; | |
4346 | switch (end[-1]) | |
4347 | { | |
4348 | case '+': | |
4349 | is_supported = PACKET_ENABLE; | |
4350 | break; | |
4351 | ||
4352 | case '-': | |
4353 | is_supported = PACKET_DISABLE; | |
4354 | break; | |
4355 | ||
4356 | case '?': | |
4357 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
4358 | break; | |
4359 | ||
4360 | default: | |
c50c785c JM |
4361 | warning (_("unrecognized item \"%s\" " |
4362 | "in \"qSupported\" response"), p); | |
5796c8dc SS |
4363 | continue; |
4364 | } | |
4365 | end[-1] = '\0'; | |
4366 | } | |
4367 | ||
4368 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4369 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
4370 | { | |
4371 | const struct protocol_feature *feature; | |
4372 | ||
4373 | seen[i] = 1; | |
4374 | feature = &remote_protocol_features[i]; | |
4375 | feature->func (feature, is_supported, value); | |
4376 | break; | |
4377 | } | |
4378 | } | |
4379 | ||
4380 | /* If we increased the packet size, make sure to increase the global | |
4381 | buffer size also. We delay this until after parsing the entire | |
4382 | qSupported packet, because this is the same buffer we were | |
4383 | parsing. */ | |
4384 | if (rs->buf_size < rs->explicit_packet_size) | |
4385 | { | |
4386 | rs->buf_size = rs->explicit_packet_size; | |
4387 | rs->buf = xrealloc (rs->buf, rs->buf_size); | |
4388 | } | |
4389 | ||
4390 | /* Handle the defaults for unmentioned features. */ | |
4391 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4392 | if (!seen[i]) | |
4393 | { | |
4394 | const struct protocol_feature *feature; | |
4395 | ||
4396 | feature = &remote_protocol_features[i]; | |
4397 | feature->func (feature, feature->default_support, NULL); | |
4398 | } | |
4399 | } | |
4400 | ||
ef5ccd6c JM |
4401 | /* Remove any of the remote.c targets from target stack. Upper targets depend |
4402 | on it so remove them first. */ | |
4403 | ||
4404 | static void | |
4405 | remote_unpush_target (void) | |
4406 | { | |
25e4902b | 4407 | pop_all_targets_above (process_stratum - 1); |
ef5ccd6c | 4408 | } |
5796c8dc SS |
4409 | |
4410 | static void | |
25e4902b | 4411 | remote_open_1 (const char *name, int from_tty, |
c50c785c | 4412 | struct target_ops *target, int extended_p) |
5796c8dc SS |
4413 | { |
4414 | struct remote_state *rs = get_remote_state (); | |
4415 | ||
4416 | if (name == 0) | |
4417 | error (_("To open a remote debug connection, you need to specify what\n" | |
4418 | "serial device is attached to the remote system\n" | |
4419 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); | |
4420 | ||
4421 | /* See FIXME above. */ | |
4422 | if (!target_async_permitted) | |
4423 | wait_forever_enabled_p = 1; | |
4424 | ||
4425 | /* If we're connected to a running target, target_preopen will kill it. | |
ef5ccd6c JM |
4426 | Ask this question first, before target_preopen has a chance to kill |
4427 | anything. */ | |
25e4902b | 4428 | if (rs->remote_desc != NULL && !have_inferiors ()) |
5796c8dc | 4429 | { |
ef5ccd6c JM |
4430 | if (from_tty |
4431 | && !query (_("Already connected to a remote target. Disconnect? "))) | |
5796c8dc SS |
4432 | error (_("Still connected.")); |
4433 | } | |
4434 | ||
ef5ccd6c | 4435 | /* Here the possibly existing remote target gets unpushed. */ |
5796c8dc SS |
4436 | target_preopen (from_tty); |
4437 | ||
5796c8dc | 4438 | /* Make sure we send the passed signals list the next time we resume. */ |
25e4902b AHJ |
4439 | xfree (rs->last_pass_packet); |
4440 | rs->last_pass_packet = NULL; | |
5796c8dc | 4441 | |
ef5ccd6c JM |
4442 | /* Make sure we send the program signals list the next time we |
4443 | resume. */ | |
25e4902b AHJ |
4444 | xfree (rs->last_program_signals_packet); |
4445 | rs->last_program_signals_packet = NULL; | |
ef5ccd6c | 4446 | |
5796c8dc SS |
4447 | remote_fileio_reset (); |
4448 | reopen_exec_file (); | |
4449 | reread_symbols (); | |
4450 | ||
25e4902b AHJ |
4451 | rs->remote_desc = remote_serial_open (name); |
4452 | if (!rs->remote_desc) | |
5796c8dc SS |
4453 | perror_with_name (name); |
4454 | ||
4455 | if (baud_rate != -1) | |
4456 | { | |
25e4902b | 4457 | if (serial_setbaudrate (rs->remote_desc, baud_rate)) |
5796c8dc SS |
4458 | { |
4459 | /* The requested speed could not be set. Error out to | |
4460 | top level after closing remote_desc. Take care to | |
4461 | set remote_desc to NULL to avoid closing remote_desc | |
4462 | more than once. */ | |
25e4902b AHJ |
4463 | serial_close (rs->remote_desc); |
4464 | rs->remote_desc = NULL; | |
5796c8dc SS |
4465 | perror_with_name (name); |
4466 | } | |
4467 | } | |
4468 | ||
25e4902b AHJ |
4469 | serial_setparity (rs->remote_desc, serial_parity); |
4470 | serial_raw (rs->remote_desc); | |
5796c8dc SS |
4471 | |
4472 | /* If there is something sitting in the buffer we might take it as a | |
4473 | response to a command, which would be bad. */ | |
25e4902b | 4474 | serial_flush_input (rs->remote_desc); |
5796c8dc SS |
4475 | |
4476 | if (from_tty) | |
4477 | { | |
4478 | puts_filtered ("Remote debugging using "); | |
4479 | puts_filtered (name); | |
4480 | puts_filtered ("\n"); | |
4481 | } | |
4482 | push_target (target); /* Switch to using remote target now. */ | |
4483 | ||
4484 | /* Register extra event sources in the event loop. */ | |
4485 | remote_async_inferior_event_token | |
4486 | = create_async_event_handler (remote_async_inferior_event_handler, | |
4487 | NULL); | |
25e4902b | 4488 | rs->notif_state = remote_notif_state_allocate (); |
5796c8dc SS |
4489 | |
4490 | /* Reset the target state; these things will be queried either by | |
4491 | remote_query_supported or as they are needed. */ | |
25e4902b | 4492 | reset_all_packet_configs_support (); |
5796c8dc SS |
4493 | rs->cached_wait_status = 0; |
4494 | rs->explicit_packet_size = 0; | |
4495 | rs->noack_mode = 0; | |
5796c8dc | 4496 | rs->extended = extended_p; |
5796c8dc | 4497 | rs->waiting_for_stop_reply = 0; |
cf7f2e2d | 4498 | rs->ctrlc_pending_p = 0; |
5796c8dc | 4499 | |
25e4902b AHJ |
4500 | rs->general_thread = not_sent_ptid; |
4501 | rs->continue_thread = not_sent_ptid; | |
4502 | rs->remote_traceframe_number = -1; | |
5796c8dc SS |
4503 | |
4504 | /* Probe for ability to use "ThreadInfo" query, as required. */ | |
25e4902b AHJ |
4505 | rs->use_threadinfo_query = 1; |
4506 | rs->use_threadextra_query = 1; | |
4507 | ||
4508 | readahead_cache_invalidate (); | |
5796c8dc SS |
4509 | |
4510 | if (target_async_permitted) | |
4511 | { | |
4512 | /* With this target we start out by owning the terminal. */ | |
4513 | remote_async_terminal_ours_p = 1; | |
4514 | ||
4515 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
4516 | assumed that the target is already ready and able to respond to | |
c50c785c | 4517 | requests. Unfortunately remote_start_remote() eventually calls |
5796c8dc | 4518 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
c50c785c | 4519 | around this. Eventually a mechanism that allows |
5796c8dc SS |
4520 | wait_for_inferior() to expect/get timeouts will be |
4521 | implemented. */ | |
4522 | wait_forever_enabled_p = 0; | |
4523 | } | |
4524 | ||
4525 | /* First delete any symbols previously loaded from shared libraries. */ | |
4526 | no_shared_libraries (NULL, 0); | |
4527 | ||
4528 | /* Start afresh. */ | |
4529 | init_thread_list (); | |
4530 | ||
4531 | /* Start the remote connection. If error() or QUIT, discard this | |
4532 | target (we'd otherwise be in an inconsistent state) and then | |
4533 | propogate the error on up the exception chain. This ensures that | |
4534 | the caller doesn't stumble along blindly assuming that the | |
4535 | function succeeded. The CLI doesn't have this problem but other | |
4536 | UI's, such as MI do. | |
4537 | ||
4538 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
4539 | this function should return an error indication letting the | |
4540 | caller restore the previous state. Unfortunately the command | |
4541 | ``target remote'' is directly wired to this function making that | |
4542 | impossible. On a positive note, the CLI side of this problem has | |
4543 | been fixed - the function set_cmd_context() makes it possible for | |
4544 | all the ``target ....'' commands to share a common callback | |
4545 | function. See cli-dump.c. */ | |
4546 | { | |
5796c8dc | 4547 | |
25e4902b | 4548 | TRY |
a45ae5f8 JM |
4549 | { |
4550 | remote_start_remote (from_tty, target, extended_p); | |
4551 | } | |
25e4902b | 4552 | CATCH (ex, RETURN_MASK_ALL) |
5796c8dc SS |
4553 | { |
4554 | /* Pop the partially set up target - unless something else did | |
4555 | already before throwing the exception. */ | |
25e4902b | 4556 | if (rs->remote_desc != NULL) |
ef5ccd6c | 4557 | remote_unpush_target (); |
5796c8dc SS |
4558 | if (target_async_permitted) |
4559 | wait_forever_enabled_p = 1; | |
4560 | throw_exception (ex); | |
4561 | } | |
25e4902b | 4562 | END_CATCH |
5796c8dc SS |
4563 | } |
4564 | ||
25e4902b AHJ |
4565 | remote_btrace_reset (); |
4566 | ||
5796c8dc SS |
4567 | if (target_async_permitted) |
4568 | wait_forever_enabled_p = 1; | |
4569 | } | |
4570 | ||
25e4902b AHJ |
4571 | /* Detach the specified process. */ |
4572 | ||
4573 | static void | |
4574 | remote_detach_pid (int pid) | |
4575 | { | |
4576 | struct remote_state *rs = get_remote_state (); | |
4577 | ||
4578 | if (remote_multi_process_p (rs)) | |
4579 | xsnprintf (rs->buf, get_remote_packet_size (), "D;%x", pid); | |
4580 | else | |
4581 | strcpy (rs->buf, "D"); | |
4582 | ||
4583 | putpkt (rs->buf); | |
4584 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4585 | ||
4586 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') | |
4587 | ; | |
4588 | else if (rs->buf[0] == '\0') | |
4589 | error (_("Remote doesn't know how to detach")); | |
4590 | else | |
4591 | error (_("Can't detach process.")); | |
4592 | } | |
4593 | ||
4594 | /* This detaches a program to which we previously attached, using | |
4595 | inferior_ptid to identify the process. After this is done, GDB | |
4596 | can be used to debug some other program. We better not have left | |
4597 | any breakpoints in the target program or it'll die when it hits | |
4598 | one. */ | |
5796c8dc SS |
4599 | |
4600 | static void | |
25e4902b | 4601 | remote_detach_1 (const char *args, int from_tty) |
5796c8dc SS |
4602 | { |
4603 | int pid = ptid_get_pid (inferior_ptid); | |
4604 | struct remote_state *rs = get_remote_state (); | |
25e4902b AHJ |
4605 | struct thread_info *tp = find_thread_ptid (inferior_ptid); |
4606 | int is_fork_parent; | |
5796c8dc SS |
4607 | |
4608 | if (args) | |
4609 | error (_("Argument given to \"detach\" when remotely debugging.")); | |
4610 | ||
4611 | if (!target_has_execution) | |
4612 | error (_("No process to detach from.")); | |
4613 | ||
ef5ccd6c JM |
4614 | if (from_tty) |
4615 | { | |
4616 | char *exec_file = get_exec_file (0); | |
4617 | if (exec_file == NULL) | |
4618 | exec_file = ""; | |
4619 | printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file, | |
4620 | target_pid_to_str (pid_to_ptid (pid))); | |
4621 | gdb_flush (gdb_stdout); | |
4622 | } | |
4623 | ||
5796c8dc | 4624 | /* Tell the remote target to detach. */ |
25e4902b | 4625 | remote_detach_pid (pid); |
5796c8dc | 4626 | |
25e4902b | 4627 | if (from_tty && !rs->extended) |
ef5ccd6c | 4628 | puts_filtered (_("Ending remote debugging.\n")); |
5796c8dc | 4629 | |
25e4902b AHJ |
4630 | /* Check to see if we are detaching a fork parent. Note that if we |
4631 | are detaching a fork child, tp == NULL. */ | |
4632 | is_fork_parent = (tp != NULL | |
4633 | && tp->pending_follow.kind == TARGET_WAITKIND_FORKED); | |
4634 | ||
4635 | /* If doing detach-on-fork, we don't mourn, because that will delete | |
4636 | breakpoints that should be available for the followed inferior. */ | |
4637 | if (!is_fork_parent) | |
4638 | target_mourn_inferior (); | |
4639 | else | |
4640 | { | |
4641 | inferior_ptid = null_ptid; | |
4642 | detach_inferior (pid); | |
4643 | } | |
5796c8dc SS |
4644 | } |
4645 | ||
4646 | static void | |
25e4902b | 4647 | remote_detach (struct target_ops *ops, const char *args, int from_tty) |
5796c8dc | 4648 | { |
25e4902b | 4649 | remote_detach_1 (args, from_tty); |
5796c8dc SS |
4650 | } |
4651 | ||
4652 | static void | |
25e4902b AHJ |
4653 | extended_remote_detach (struct target_ops *ops, const char *args, int from_tty) |
4654 | { | |
4655 | remote_detach_1 (args, from_tty); | |
4656 | } | |
4657 | ||
4658 | /* Target follow-fork function for remote targets. On entry, and | |
4659 | at return, the current inferior is the fork parent. | |
4660 | ||
4661 | Note that although this is currently only used for extended-remote, | |
4662 | it is named remote_follow_fork in anticipation of using it for the | |
4663 | remote target as well. */ | |
4664 | ||
4665 | static int | |
4666 | remote_follow_fork (struct target_ops *ops, int follow_child, | |
4667 | int detach_fork) | |
5796c8dc | 4668 | { |
25e4902b AHJ |
4669 | struct remote_state *rs = get_remote_state (); |
4670 | enum target_waitkind kind = inferior_thread ()->pending_follow.kind; | |
4671 | ||
4672 | if ((kind == TARGET_WAITKIND_FORKED && remote_fork_event_p (rs)) | |
4673 | || (kind == TARGET_WAITKIND_VFORKED && remote_vfork_event_p (rs))) | |
4674 | { | |
4675 | /* When following the parent and detaching the child, we detach | |
4676 | the child here. For the case of following the child and | |
4677 | detaching the parent, the detach is done in the target- | |
4678 | independent follow fork code in infrun.c. We can't use | |
4679 | target_detach when detaching an unfollowed child because | |
4680 | the client side doesn't know anything about the child. */ | |
4681 | if (detach_fork && !follow_child) | |
4682 | { | |
4683 | /* Detach the fork child. */ | |
4684 | ptid_t child_ptid; | |
4685 | pid_t child_pid; | |
4686 | ||
4687 | child_ptid = inferior_thread ()->pending_follow.value.related_pid; | |
4688 | child_pid = ptid_get_pid (child_ptid); | |
4689 | ||
4690 | remote_detach_pid (child_pid); | |
4691 | detach_inferior (child_pid); | |
4692 | } | |
4693 | } | |
4694 | return 0; | |
5796c8dc SS |
4695 | } |
4696 | ||
4697 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ | |
4698 | ||
4699 | static void | |
25e4902b | 4700 | remote_disconnect (struct target_ops *target, const char *args, int from_tty) |
5796c8dc SS |
4701 | { |
4702 | if (args) | |
4703 | error (_("Argument given to \"disconnect\" when remotely debugging.")); | |
4704 | ||
4705 | /* Make sure we unpush even the extended remote targets; mourn | |
25e4902b | 4706 | won't do it. So call remote_mourn directly instead of |
5796c8dc | 4707 | target_mourn_inferior. */ |
25e4902b | 4708 | remote_mourn (target); |
5796c8dc SS |
4709 | |
4710 | if (from_tty) | |
4711 | puts_filtered ("Ending remote debugging.\n"); | |
4712 | } | |
4713 | ||
4714 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, | |
4715 | be chatty about it. */ | |
4716 | ||
4717 | static void | |
25e4902b AHJ |
4718 | extended_remote_attach (struct target_ops *target, const char *args, |
4719 | int from_tty) | |
5796c8dc SS |
4720 | { |
4721 | struct remote_state *rs = get_remote_state (); | |
4722 | int pid; | |
5796c8dc SS |
4723 | char *wait_status = NULL; |
4724 | ||
cf7f2e2d | 4725 | pid = parse_pid_to_attach (args); |
5796c8dc | 4726 | |
cf7f2e2d JM |
4727 | /* Remote PID can be freely equal to getpid, do not check it here the same |
4728 | way as in other targets. */ | |
5796c8dc | 4729 | |
25e4902b | 4730 | if (packet_support (PACKET_vAttach) == PACKET_DISABLE) |
5796c8dc SS |
4731 | error (_("This target does not support attaching to a process")); |
4732 | ||
ef5ccd6c JM |
4733 | if (from_tty) |
4734 | { | |
4735 | char *exec_file = get_exec_file (0); | |
4736 | ||
4737 | if (exec_file) | |
4738 | printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file, | |
4739 | target_pid_to_str (pid_to_ptid (pid))); | |
4740 | else | |
4741 | printf_unfiltered (_("Attaching to %s\n"), | |
4742 | target_pid_to_str (pid_to_ptid (pid))); | |
4743 | ||
4744 | gdb_flush (gdb_stdout); | |
4745 | } | |
4746 | ||
4747 | xsnprintf (rs->buf, get_remote_packet_size (), "vAttach;%x", pid); | |
5796c8dc SS |
4748 | putpkt (rs->buf); |
4749 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4750 | ||
25e4902b AHJ |
4751 | switch (packet_ok (rs->buf, |
4752 | &remote_protocol_packets[PACKET_vAttach])) | |
5796c8dc | 4753 | { |
25e4902b | 4754 | case PACKET_OK: |
5796c8dc SS |
4755 | if (!non_stop) |
4756 | { | |
4757 | /* Save the reply for later. */ | |
4758 | wait_status = alloca (strlen (rs->buf) + 1); | |
4759 | strcpy (wait_status, rs->buf); | |
4760 | } | |
4761 | else if (strcmp (rs->buf, "OK") != 0) | |
4762 | error (_("Attaching to %s failed with: %s"), | |
4763 | target_pid_to_str (pid_to_ptid (pid)), | |
4764 | rs->buf); | |
25e4902b AHJ |
4765 | break; |
4766 | case PACKET_UNKNOWN: | |
4767 | error (_("This target does not support attaching to a process")); | |
4768 | default: | |
4769 | error (_("Attaching to %s failed"), | |
4770 | target_pid_to_str (pid_to_ptid (pid))); | |
5796c8dc | 4771 | } |
5796c8dc | 4772 | |
25e4902b | 4773 | set_current_inferior (remote_add_inferior (0, pid, 1, 0)); |
5796c8dc SS |
4774 | |
4775 | inferior_ptid = pid_to_ptid (pid); | |
4776 | ||
4777 | if (non_stop) | |
4778 | { | |
4779 | struct thread_info *thread; | |
4780 | ||
4781 | /* Get list of threads. */ | |
25e4902b | 4782 | remote_update_thread_list (target); |
5796c8dc SS |
4783 | |
4784 | thread = first_thread_of_process (pid); | |
4785 | if (thread) | |
4786 | inferior_ptid = thread->ptid; | |
4787 | else | |
4788 | inferior_ptid = pid_to_ptid (pid); | |
4789 | ||
4790 | /* Invalidate our notion of the remote current thread. */ | |
25e4902b | 4791 | record_currthread (rs, minus_one_ptid); |
5796c8dc SS |
4792 | } |
4793 | else | |
4794 | { | |
4795 | /* Now, if we have thread information, update inferior_ptid. */ | |
4796 | inferior_ptid = remote_current_thread (inferior_ptid); | |
4797 | ||
4798 | /* Add the main thread to the thread list. */ | |
4799 | add_thread_silent (inferior_ptid); | |
4800 | } | |
4801 | ||
4802 | /* Next, if the target can specify a description, read it. We do | |
4803 | this before anything involving memory or registers. */ | |
4804 | target_find_description (); | |
4805 | ||
4806 | if (!non_stop) | |
4807 | { | |
4808 | /* Use the previously fetched status. */ | |
4809 | gdb_assert (wait_status != NULL); | |
4810 | ||
4811 | if (target_can_async_p ()) | |
4812 | { | |
ef5ccd6c JM |
4813 | struct notif_event *reply |
4814 | = remote_notif_parse (¬if_client_stop, wait_status); | |
5796c8dc | 4815 | |
ef5ccd6c | 4816 | push_stop_reply ((struct stop_reply *) reply); |
5796c8dc | 4817 | |
25e4902b | 4818 | target_async (1); |
5796c8dc SS |
4819 | } |
4820 | else | |
4821 | { | |
4822 | gdb_assert (wait_status != NULL); | |
4823 | strcpy (rs->buf, wait_status); | |
4824 | rs->cached_wait_status = 1; | |
4825 | } | |
4826 | } | |
4827 | else | |
4828 | gdb_assert (wait_status == NULL); | |
4829 | } | |
4830 | ||
25e4902b | 4831 | /* Implementation of the to_post_attach method. */ |
5796c8dc | 4832 | |
25e4902b AHJ |
4833 | static void |
4834 | extended_remote_post_attach (struct target_ops *ops, int pid) | |
5796c8dc | 4835 | { |
25e4902b AHJ |
4836 | /* In certain cases GDB might not have had the chance to start |
4837 | symbol lookup up until now. This could happen if the debugged | |
4838 | binary is not using shared libraries, the vsyscall page is not | |
4839 | present (on Linux) and the binary itself hadn't changed since the | |
4840 | debugging process was started. */ | |
4841 | if (symfile_objfile != NULL) | |
4842 | remote_check_symbols(); | |
5796c8dc SS |
4843 | } |
4844 | ||
5796c8dc SS |
4845 | \f |
4846 | /* Check for the availability of vCont. This function should also check | |
4847 | the response. */ | |
4848 | ||
4849 | static void | |
4850 | remote_vcont_probe (struct remote_state *rs) | |
4851 | { | |
4852 | char *buf; | |
4853 | ||
4854 | strcpy (rs->buf, "vCont?"); | |
4855 | putpkt (rs->buf); | |
4856 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4857 | buf = rs->buf; | |
4858 | ||
4859 | /* Make sure that the features we assume are supported. */ | |
25e4902b | 4860 | if (startswith (buf, "vCont")) |
5796c8dc SS |
4861 | { |
4862 | char *p = &buf[5]; | |
4863 | int support_s, support_S, support_c, support_C; | |
4864 | ||
4865 | support_s = 0; | |
4866 | support_S = 0; | |
4867 | support_c = 0; | |
4868 | support_C = 0; | |
25e4902b AHJ |
4869 | rs->supports_vCont.t = 0; |
4870 | rs->supports_vCont.r = 0; | |
5796c8dc SS |
4871 | while (p && *p == ';') |
4872 | { | |
4873 | p++; | |
4874 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4875 | support_s = 1; | |
4876 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4877 | support_S = 1; | |
4878 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4879 | support_c = 1; | |
4880 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4881 | support_C = 1; | |
4882 | else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
25e4902b AHJ |
4883 | rs->supports_vCont.t = 1; |
4884 | else if (*p == 'r' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4885 | rs->supports_vCont.r = 1; | |
5796c8dc SS |
4886 | |
4887 | p = strchr (p, ';'); | |
4888 | } | |
4889 | ||
4890 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing | |
4891 | BUF will make packet_ok disable the packet. */ | |
4892 | if (!support_s || !support_S || !support_c || !support_C) | |
4893 | buf[0] = 0; | |
4894 | } | |
4895 | ||
4896 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); | |
4897 | } | |
4898 | ||
4899 | /* Helper function for building "vCont" resumptions. Write a | |
4900 | resumption to P. ENDP points to one-passed-the-end of the buffer | |
4901 | we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The | |
4902 | thread to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
4903 | resumed thread should be single-stepped and/or signalled. If PTID | |
4904 | equals minus_one_ptid, then all threads are resumed; if PTID | |
4905 | represents a process, then all threads of the process are resumed; | |
4906 | the thread to be stepped and/or signalled is given in the global | |
4907 | INFERIOR_PTID. */ | |
4908 | ||
4909 | static char * | |
4910 | append_resumption (char *p, char *endp, | |
ef5ccd6c | 4911 | ptid_t ptid, int step, enum gdb_signal siggnal) |
5796c8dc SS |
4912 | { |
4913 | struct remote_state *rs = get_remote_state (); | |
4914 | ||
ef5ccd6c | 4915 | if (step && siggnal != GDB_SIGNAL_0) |
5796c8dc | 4916 | p += xsnprintf (p, endp - p, ";S%02x", siggnal); |
25e4902b AHJ |
4917 | else if (step |
4918 | /* GDB is willing to range step. */ | |
4919 | && use_range_stepping | |
4920 | /* Target supports range stepping. */ | |
4921 | && rs->supports_vCont.r | |
4922 | /* We don't currently support range stepping multiple | |
4923 | threads with a wildcard (though the protocol allows it, | |
4924 | so stubs shouldn't make an active effort to forbid | |
4925 | it). */ | |
4926 | && !(remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
4927 | { | |
4928 | struct thread_info *tp; | |
4929 | ||
4930 | if (ptid_equal (ptid, minus_one_ptid)) | |
4931 | { | |
4932 | /* If we don't know about the target thread's tid, then | |
4933 | we're resuming magic_null_ptid (see caller). */ | |
4934 | tp = find_thread_ptid (magic_null_ptid); | |
4935 | } | |
4936 | else | |
4937 | tp = find_thread_ptid (ptid); | |
4938 | gdb_assert (tp != NULL); | |
4939 | ||
4940 | if (tp->control.may_range_step) | |
4941 | { | |
4942 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
4943 | ||
4944 | p += xsnprintf (p, endp - p, ";r%s,%s", | |
4945 | phex_nz (tp->control.step_range_start, | |
4946 | addr_size), | |
4947 | phex_nz (tp->control.step_range_end, | |
4948 | addr_size)); | |
4949 | } | |
4950 | else | |
4951 | p += xsnprintf (p, endp - p, ";s"); | |
4952 | } | |
5796c8dc SS |
4953 | else if (step) |
4954 | p += xsnprintf (p, endp - p, ";s"); | |
ef5ccd6c | 4955 | else if (siggnal != GDB_SIGNAL_0) |
5796c8dc SS |
4956 | p += xsnprintf (p, endp - p, ";C%02x", siggnal); |
4957 | else | |
4958 | p += xsnprintf (p, endp - p, ";c"); | |
4959 | ||
4960 | if (remote_multi_process_p (rs) && ptid_is_pid (ptid)) | |
4961 | { | |
4962 | ptid_t nptid; | |
4963 | ||
4964 | /* All (-1) threads of process. */ | |
25e4902b | 4965 | nptid = ptid_build (ptid_get_pid (ptid), -1, 0); |
5796c8dc SS |
4966 | |
4967 | p += xsnprintf (p, endp - p, ":"); | |
4968 | p = write_ptid (p, endp, nptid); | |
4969 | } | |
4970 | else if (!ptid_equal (ptid, minus_one_ptid)) | |
4971 | { | |
4972 | p += xsnprintf (p, endp - p, ":"); | |
4973 | p = write_ptid (p, endp, ptid); | |
4974 | } | |
4975 | ||
4976 | return p; | |
4977 | } | |
4978 | ||
ef5ccd6c JM |
4979 | /* Append a vCont continue-with-signal action for threads that have a |
4980 | non-zero stop signal. */ | |
4981 | ||
4982 | static char * | |
4983 | append_pending_thread_resumptions (char *p, char *endp, ptid_t ptid) | |
4984 | { | |
4985 | struct thread_info *thread; | |
4986 | ||
25e4902b | 4987 | ALL_NON_EXITED_THREADS (thread) |
ef5ccd6c JM |
4988 | if (ptid_match (thread->ptid, ptid) |
4989 | && !ptid_equal (inferior_ptid, thread->ptid) | |
25e4902b | 4990 | && thread->suspend.stop_signal != GDB_SIGNAL_0) |
ef5ccd6c JM |
4991 | { |
4992 | p = append_resumption (p, endp, thread->ptid, | |
4993 | 0, thread->suspend.stop_signal); | |
4994 | thread->suspend.stop_signal = GDB_SIGNAL_0; | |
4995 | } | |
4996 | ||
4997 | return p; | |
4998 | } | |
4999 | ||
5796c8dc SS |
5000 | /* Resume the remote inferior by using a "vCont" packet. The thread |
5001 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
5002 | resumed thread should be single-stepped and/or signalled. If PTID | |
5003 | equals minus_one_ptid, then all threads are resumed; the thread to | |
5004 | be stepped and/or signalled is given in the global INFERIOR_PTID. | |
5005 | This function returns non-zero iff it resumes the inferior. | |
5006 | ||
5007 | This function issues a strict subset of all possible vCont commands at the | |
5008 | moment. */ | |
5009 | ||
5010 | static int | |
ef5ccd6c | 5011 | remote_vcont_resume (ptid_t ptid, int step, enum gdb_signal siggnal) |
5796c8dc SS |
5012 | { |
5013 | struct remote_state *rs = get_remote_state (); | |
5014 | char *p; | |
5015 | char *endp; | |
5016 | ||
25e4902b | 5017 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
5796c8dc SS |
5018 | remote_vcont_probe (rs); |
5019 | ||
25e4902b | 5020 | if (packet_support (PACKET_vCont) == PACKET_DISABLE) |
5796c8dc SS |
5021 | return 0; |
5022 | ||
5023 | p = rs->buf; | |
5024 | endp = rs->buf + get_remote_packet_size (); | |
5025 | ||
5026 | /* If we could generate a wider range of packets, we'd have to worry | |
5027 | about overflowing BUF. Should there be a generic | |
5028 | "multi-part-packet" packet? */ | |
5029 | ||
5030 | p += xsnprintf (p, endp - p, "vCont"); | |
5031 | ||
5032 | if (ptid_equal (ptid, magic_null_ptid)) | |
5033 | { | |
5034 | /* MAGIC_NULL_PTID means that we don't have any active threads, | |
5035 | so we don't have any TID numbers the inferior will | |
5036 | understand. Make sure to only send forms that do not specify | |
5037 | a TID. */ | |
c50c785c | 5038 | append_resumption (p, endp, minus_one_ptid, step, siggnal); |
5796c8dc SS |
5039 | } |
5040 | else if (ptid_equal (ptid, minus_one_ptid) || ptid_is_pid (ptid)) | |
5041 | { | |
5042 | /* Resume all threads (of all processes, or of a single | |
5043 | process), with preference for INFERIOR_PTID. This assumes | |
5044 | inferior_ptid belongs to the set of all threads we are about | |
5045 | to resume. */ | |
ef5ccd6c | 5046 | if (step || siggnal != GDB_SIGNAL_0) |
5796c8dc SS |
5047 | { |
5048 | /* Step inferior_ptid, with or without signal. */ | |
5049 | p = append_resumption (p, endp, inferior_ptid, step, siggnal); | |
5050 | } | |
5051 | ||
ef5ccd6c JM |
5052 | /* Also pass down any pending signaled resumption for other |
5053 | threads not the current. */ | |
5054 | p = append_pending_thread_resumptions (p, endp, ptid); | |
5055 | ||
5796c8dc | 5056 | /* And continue others without a signal. */ |
ef5ccd6c | 5057 | append_resumption (p, endp, ptid, /*step=*/ 0, GDB_SIGNAL_0); |
5796c8dc SS |
5058 | } |
5059 | else | |
5060 | { | |
5061 | /* Scheduler locking; resume only PTID. */ | |
c50c785c | 5062 | append_resumption (p, endp, ptid, step, siggnal); |
5796c8dc SS |
5063 | } |
5064 | ||
5065 | gdb_assert (strlen (rs->buf) < get_remote_packet_size ()); | |
5066 | putpkt (rs->buf); | |
5067 | ||
5068 | if (non_stop) | |
5069 | { | |
5070 | /* In non-stop, the stub replies to vCont with "OK". The stop | |
5071 | reply will be reported asynchronously by means of a `%Stop' | |
5072 | notification. */ | |
5073 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5074 | if (strcmp (rs->buf, "OK") != 0) | |
5075 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf); | |
5076 | } | |
5077 | ||
5078 | return 1; | |
5079 | } | |
5080 | ||
5081 | /* Tell the remote machine to resume. */ | |
5082 | ||
5796c8dc SS |
5083 | static void |
5084 | remote_resume (struct target_ops *ops, | |
ef5ccd6c | 5085 | ptid_t ptid, int step, enum gdb_signal siggnal) |
5796c8dc SS |
5086 | { |
5087 | struct remote_state *rs = get_remote_state (); | |
5088 | char *buf; | |
5089 | ||
ef5ccd6c JM |
5090 | /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN |
5091 | (explained in remote-notif.c:handle_notification) so | |
5092 | remote_notif_process is not called. We need find a place where | |
5093 | it is safe to start a 'vNotif' sequence. It is good to do it | |
5094 | before resuming inferior, because inferior was stopped and no RSP | |
5095 | traffic at that moment. */ | |
5096 | if (!non_stop) | |
25e4902b | 5097 | remote_notif_process (rs->notif_state, ¬if_client_stop); |
ef5ccd6c | 5098 | |
25e4902b AHJ |
5099 | rs->last_sent_signal = siggnal; |
5100 | rs->last_sent_step = step; | |
5796c8dc | 5101 | |
5796c8dc SS |
5102 | /* The vCont packet doesn't need to specify threads via Hc. */ |
5103 | /* No reverse support (yet) for vCont. */ | |
5104 | if (execution_direction != EXEC_REVERSE) | |
5105 | if (remote_vcont_resume (ptid, step, siggnal)) | |
5106 | goto done; | |
5107 | ||
5108 | /* All other supported resume packets do use Hc, so set the continue | |
5109 | thread. */ | |
5110 | if (ptid_equal (ptid, minus_one_ptid)) | |
5111 | set_continue_thread (any_thread_ptid); | |
5112 | else | |
5113 | set_continue_thread (ptid); | |
5114 | ||
5115 | buf = rs->buf; | |
5116 | if (execution_direction == EXEC_REVERSE) | |
5117 | { | |
5118 | /* We don't pass signals to the target in reverse exec mode. */ | |
ef5ccd6c | 5119 | if (info_verbose && siggnal != GDB_SIGNAL_0) |
c50c785c | 5120 | warning (_(" - Can't pass signal %d to target in reverse: ignored."), |
5796c8dc SS |
5121 | siggnal); |
5122 | ||
25e4902b | 5123 | if (step && packet_support (PACKET_bs) == PACKET_DISABLE) |
5796c8dc | 5124 | error (_("Remote reverse-step not supported.")); |
25e4902b | 5125 | if (!step && packet_support (PACKET_bc) == PACKET_DISABLE) |
5796c8dc SS |
5126 | error (_("Remote reverse-continue not supported.")); |
5127 | ||
5128 | strcpy (buf, step ? "bs" : "bc"); | |
5129 | } | |
ef5ccd6c | 5130 | else if (siggnal != GDB_SIGNAL_0) |
5796c8dc SS |
5131 | { |
5132 | buf[0] = step ? 'S' : 'C'; | |
5133 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); | |
5134 | buf[2] = tohex (((int) siggnal) & 0xf); | |
5135 | buf[3] = '\0'; | |
5136 | } | |
5137 | else | |
5138 | strcpy (buf, step ? "s" : "c"); | |
5139 | ||
5140 | putpkt (buf); | |
5141 | ||
5142 | done: | |
5143 | /* We are about to start executing the inferior, let's register it | |
c50c785c JM |
5144 | with the event loop. NOTE: this is the one place where all the |
5145 | execution commands end up. We could alternatively do this in each | |
5796c8dc SS |
5146 | of the execution commands in infcmd.c. */ |
5147 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here | |
5148 | into infcmd.c in order to allow inferior function calls to work | |
5149 | NOT asynchronously. */ | |
5150 | if (target_can_async_p ()) | |
25e4902b | 5151 | target_async (1); |
5796c8dc SS |
5152 | |
5153 | /* We've just told the target to resume. The remote server will | |
5154 | wait for the inferior to stop, and then send a stop reply. In | |
5155 | the mean time, we can't start another command/query ourselves | |
5156 | because the stub wouldn't be ready to process it. This applies | |
5157 | only to the base all-stop protocol, however. In non-stop (which | |
5158 | only supports vCont), the stub replies with an "OK", and is | |
5159 | immediate able to process further serial input. */ | |
5160 | if (!non_stop) | |
5161 | rs->waiting_for_stop_reply = 1; | |
5162 | } | |
5163 | \f | |
5164 | ||
5165 | /* Set up the signal handler for SIGINT, while the target is | |
5166 | executing, ovewriting the 'regular' SIGINT signal handler. */ | |
5167 | static void | |
25e4902b | 5168 | async_initialize_sigint_signal_handler (void) |
5796c8dc | 5169 | { |
25e4902b | 5170 | signal (SIGINT, async_handle_remote_sigint); |
5796c8dc SS |
5171 | } |
5172 | ||
5173 | /* Signal handler for SIGINT, while the target is executing. */ | |
5174 | static void | |
25e4902b | 5175 | async_handle_remote_sigint (int sig) |
5796c8dc | 5176 | { |
25e4902b AHJ |
5177 | signal (sig, async_handle_remote_sigint_twice); |
5178 | /* Note we need to go through gdb_call_async_signal_handler in order | |
5179 | to wake up the event loop on Windows. */ | |
5180 | gdb_call_async_signal_handler (async_sigint_remote_token, 0); | |
5796c8dc SS |
5181 | } |
5182 | ||
5183 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
5184 | sent once. It will take effect the second time that the user sends | |
5185 | a ^C. */ | |
5186 | static void | |
25e4902b AHJ |
5187 | async_handle_remote_sigint_twice (int sig) |
5188 | { | |
5189 | signal (sig, async_handle_remote_sigint); | |
5190 | /* See note in async_handle_remote_sigint. */ | |
5191 | gdb_call_async_signal_handler (async_sigint_remote_twice_token, 0); | |
5192 | } | |
5193 | ||
5194 | /* Implementation of to_check_pending_interrupt. */ | |
5195 | ||
5196 | static void | |
5197 | remote_check_pending_interrupt (struct target_ops *self) | |
5796c8dc | 5198 | { |
25e4902b AHJ |
5199 | struct async_signal_handler *token = async_sigint_remote_twice_token; |
5200 | ||
5201 | if (async_signal_handler_is_marked (token)) | |
5202 | { | |
5203 | clear_async_signal_handler (token); | |
5204 | call_async_signal_handler (token); | |
5205 | } | |
5796c8dc SS |
5206 | } |
5207 | ||
5208 | /* Perform the real interruption of the target execution, in response | |
5209 | to a ^C. */ | |
5210 | static void | |
5211 | async_remote_interrupt (gdb_client_data arg) | |
5212 | { | |
5213 | if (remote_debug) | |
ef5ccd6c | 5214 | fprintf_unfiltered (gdb_stdlog, "async_remote_interrupt called\n"); |
5796c8dc SS |
5215 | |
5216 | target_stop (inferior_ptid); | |
5217 | } | |
5218 | ||
c50c785c | 5219 | /* Perform interrupt, if the first attempt did not succeed. Just give |
5796c8dc | 5220 | up on the target alltogether. */ |
25e4902b | 5221 | static void |
5796c8dc SS |
5222 | async_remote_interrupt_twice (gdb_client_data arg) |
5223 | { | |
5224 | if (remote_debug) | |
ef5ccd6c | 5225 | fprintf_unfiltered (gdb_stdlog, "async_remote_interrupt_twice called\n"); |
5796c8dc SS |
5226 | |
5227 | interrupt_query (); | |
5228 | } | |
5229 | ||
5230 | /* Reinstall the usual SIGINT handlers, after the target has | |
5231 | stopped. */ | |
5232 | static void | |
25e4902b | 5233 | async_cleanup_sigint_signal_handler (void *dummy) |
5796c8dc SS |
5234 | { |
5235 | signal (SIGINT, handle_sigint); | |
5236 | } | |
5237 | ||
5238 | /* Send ^C to target to halt it. Target will respond, and send us a | |
5239 | packet. */ | |
5240 | static void (*ofunc) (int); | |
5241 | ||
c50c785c JM |
5242 | /* The command line interface's stop routine. This function is installed |
5243 | as a signal handler for SIGINT. The first time a user requests a | |
5244 | stop, we call remote_stop to send a break or ^C. If there is no | |
5796c8dc SS |
5245 | response from the target (it didn't stop when the user requested it), |
5246 | we ask the user if he'd like to detach from the target. */ | |
5247 | static void | |
25e4902b | 5248 | sync_remote_interrupt (int signo) |
5796c8dc SS |
5249 | { |
5250 | /* If this doesn't work, try more severe steps. */ | |
25e4902b | 5251 | signal (signo, sync_remote_interrupt_twice); |
5796c8dc | 5252 | |
25e4902b | 5253 | gdb_call_async_signal_handler (async_sigint_remote_token, 1); |
5796c8dc SS |
5254 | } |
5255 | ||
5256 | /* The user typed ^C twice. */ | |
5257 | ||
5258 | static void | |
25e4902b | 5259 | sync_remote_interrupt_twice (int signo) |
5796c8dc SS |
5260 | { |
5261 | signal (signo, ofunc); | |
25e4902b AHJ |
5262 | gdb_call_async_signal_handler (async_sigint_remote_twice_token, 1); |
5263 | signal (signo, sync_remote_interrupt); | |
5796c8dc SS |
5264 | } |
5265 | ||
5266 | /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote | |
5267 | thread, all threads of a remote process, or all threads of all | |
5268 | processes. */ | |
5269 | ||
5270 | static void | |
5271 | remote_stop_ns (ptid_t ptid) | |
5272 | { | |
5273 | struct remote_state *rs = get_remote_state (); | |
5274 | char *p = rs->buf; | |
5275 | char *endp = rs->buf + get_remote_packet_size (); | |
5276 | ||
25e4902b | 5277 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
5796c8dc SS |
5278 | remote_vcont_probe (rs); |
5279 | ||
25e4902b | 5280 | if (!rs->supports_vCont.t) |
5796c8dc SS |
5281 | error (_("Remote server does not support stopping threads")); |
5282 | ||
5283 | if (ptid_equal (ptid, minus_one_ptid) | |
5284 | || (!remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
5285 | p += xsnprintf (p, endp - p, "vCont;t"); | |
5286 | else | |
5287 | { | |
5288 | ptid_t nptid; | |
5289 | ||
5290 | p += xsnprintf (p, endp - p, "vCont;t:"); | |
5291 | ||
5292 | if (ptid_is_pid (ptid)) | |
5293 | /* All (-1) threads of process. */ | |
25e4902b | 5294 | nptid = ptid_build (ptid_get_pid (ptid), -1, 0); |
5796c8dc SS |
5295 | else |
5296 | { | |
5297 | /* Small optimization: if we already have a stop reply for | |
5298 | this thread, no use in telling the stub we want this | |
5299 | stopped. */ | |
5300 | if (peek_stop_reply (ptid)) | |
5301 | return; | |
5302 | ||
5303 | nptid = ptid; | |
5304 | } | |
5305 | ||
c50c785c | 5306 | write_ptid (p, endp, nptid); |
5796c8dc SS |
5307 | } |
5308 | ||
5309 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
5310 | come in asynchronously by notification. */ | |
5311 | putpkt (rs->buf); | |
5312 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5313 | if (strcmp (rs->buf, "OK") != 0) | |
5314 | error (_("Stopping %s failed: %s"), target_pid_to_str (ptid), rs->buf); | |
5315 | } | |
5316 | ||
5317 | /* All-stop version of target_stop. Sends a break or a ^C to stop the | |
5318 | remote target. It is undefined which thread of which process | |
5319 | reports the stop. */ | |
5320 | ||
5321 | static void | |
5322 | remote_stop_as (ptid_t ptid) | |
5323 | { | |
5324 | struct remote_state *rs = get_remote_state (); | |
5325 | ||
cf7f2e2d JM |
5326 | rs->ctrlc_pending_p = 1; |
5327 | ||
5796c8dc SS |
5328 | /* If the inferior is stopped already, but the core didn't know |
5329 | about it yet, just ignore the request. The cached wait status | |
5330 | will be collected in remote_wait. */ | |
5331 | if (rs->cached_wait_status) | |
5332 | return; | |
5333 | ||
cf7f2e2d JM |
5334 | /* Send interrupt_sequence to remote target. */ |
5335 | send_interrupt_sequence (); | |
5796c8dc SS |
5336 | } |
5337 | ||
c50c785c | 5338 | /* This is the generic stop called via the target vector. When a target |
5796c8dc SS |
5339 | interrupt is requested, either by the command line or the GUI, we |
5340 | will eventually end up here. */ | |
5341 | ||
5342 | static void | |
25e4902b | 5343 | remote_stop (struct target_ops *self, ptid_t ptid) |
5796c8dc SS |
5344 | { |
5345 | if (remote_debug) | |
5346 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); | |
5347 | ||
5348 | if (non_stop) | |
5349 | remote_stop_ns (ptid); | |
5350 | else | |
5351 | remote_stop_as (ptid); | |
5352 | } | |
5353 | ||
5354 | /* Ask the user what to do when an interrupt is received. */ | |
5355 | ||
5356 | static void | |
5357 | interrupt_query (void) | |
5358 | { | |
25e4902b AHJ |
5359 | struct remote_state *rs = get_remote_state (); |
5360 | struct cleanup *old_chain; | |
5361 | ||
5362 | old_chain = make_cleanup_restore_target_terminal (); | |
5796c8dc SS |
5363 | target_terminal_ours (); |
5364 | ||
25e4902b | 5365 | if (rs->waiting_for_stop_reply && rs->ctrlc_pending_p) |
5796c8dc | 5366 | { |
25e4902b AHJ |
5367 | if (query (_("The target is not responding to interrupt requests.\n" |
5368 | "Stop debugging it? "))) | |
5796c8dc | 5369 | { |
ef5ccd6c | 5370 | remote_unpush_target (); |
25e4902b | 5371 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); |
5796c8dc SS |
5372 | } |
5373 | } | |
25e4902b AHJ |
5374 | else |
5375 | { | |
5376 | if (query (_("Interrupted while waiting for the program.\n" | |
5377 | "Give up waiting? "))) | |
5378 | quit (); | |
5379 | } | |
5796c8dc | 5380 | |
25e4902b | 5381 | do_cleanups (old_chain); |
5796c8dc SS |
5382 | } |
5383 | ||
5384 | /* Enable/disable target terminal ownership. Most targets can use | |
5385 | terminal groups to control terminal ownership. Remote targets are | |
5386 | different in that explicit transfer of ownership to/from GDB/target | |
5387 | is required. */ | |
5388 | ||
5389 | static void | |
25e4902b | 5390 | remote_terminal_inferior (struct target_ops *self) |
5796c8dc SS |
5391 | { |
5392 | if (!target_async_permitted) | |
5393 | /* Nothing to do. */ | |
5394 | return; | |
5395 | ||
5396 | /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*() | |
5397 | idempotent. The event-loop GDB talking to an asynchronous target | |
5398 | with a synchronous command calls this function from both | |
5399 | event-top.c and infrun.c/infcmd.c. Once GDB stops trying to | |
5400 | transfer the terminal to the target when it shouldn't this guard | |
5401 | can go away. */ | |
5402 | if (!remote_async_terminal_ours_p) | |
5403 | return; | |
5404 | delete_file_handler (input_fd); | |
5405 | remote_async_terminal_ours_p = 0; | |
25e4902b | 5406 | async_initialize_sigint_signal_handler (); |
5796c8dc SS |
5407 | /* NOTE: At this point we could also register our selves as the |
5408 | recipient of all input. Any characters typed could then be | |
5409 | passed on down to the target. */ | |
5410 | } | |
5411 | ||
5412 | static void | |
25e4902b | 5413 | remote_terminal_ours (struct target_ops *self) |
5796c8dc SS |
5414 | { |
5415 | if (!target_async_permitted) | |
5416 | /* Nothing to do. */ | |
5417 | return; | |
5418 | ||
5419 | /* See FIXME in remote_terminal_inferior. */ | |
5420 | if (remote_async_terminal_ours_p) | |
5421 | return; | |
25e4902b | 5422 | async_cleanup_sigint_signal_handler (NULL); |
5796c8dc SS |
5423 | add_file_handler (input_fd, stdin_event_handler, 0); |
5424 | remote_async_terminal_ours_p = 1; | |
5425 | } | |
5426 | ||
cf7f2e2d | 5427 | static void |
5796c8dc SS |
5428 | remote_console_output (char *msg) |
5429 | { | |
5430 | char *p; | |
5431 | ||
5432 | for (p = msg; p[0] && p[1]; p += 2) | |
5433 | { | |
5434 | char tb[2]; | |
5435 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
cf7f2e2d | 5436 | |
5796c8dc SS |
5437 | tb[0] = c; |
5438 | tb[1] = 0; | |
5439 | fputs_unfiltered (tb, gdb_stdtarg); | |
5440 | } | |
a45ae5f8 JM |
5441 | gdb_flush (gdb_stdtarg); |
5442 | } | |
5796c8dc SS |
5443 | |
5444 | typedef struct cached_reg | |
5445 | { | |
5446 | int num; | |
5447 | gdb_byte data[MAX_REGISTER_SIZE]; | |
5448 | } cached_reg_t; | |
5449 | ||
5450 | DEF_VEC_O(cached_reg_t); | |
5451 | ||
ef5ccd6c | 5452 | typedef struct stop_reply |
5796c8dc | 5453 | { |
ef5ccd6c | 5454 | struct notif_event base; |
5796c8dc | 5455 | |
ef5ccd6c | 5456 | /* The identifier of the thread about this event */ |
5796c8dc SS |
5457 | ptid_t ptid; |
5458 | ||
25e4902b AHJ |
5459 | /* The remote state this event is associated with. When the remote |
5460 | connection, represented by a remote_state object, is closed, | |
5461 | all the associated stop_reply events should be released. */ | |
5462 | struct remote_state *rs; | |
5463 | ||
5796c8dc SS |
5464 | struct target_waitstatus ws; |
5465 | ||
a45ae5f8 JM |
5466 | /* Expedited registers. This makes remote debugging a bit more |
5467 | efficient for those targets that provide critical registers as | |
5468 | part of their normal status mechanism (as another roundtrip to | |
5469 | fetch them is avoided). */ | |
5796c8dc SS |
5470 | VEC(cached_reg_t) *regcache; |
5471 | ||
25e4902b | 5472 | enum target_stop_reason stop_reason; |
5796c8dc | 5473 | |
25e4902b | 5474 | CORE_ADDR watch_data_address; |
cf7f2e2d JM |
5475 | |
5476 | int core; | |
ef5ccd6c | 5477 | } *stop_reply_p; |
5796c8dc | 5478 | |
ef5ccd6c JM |
5479 | DECLARE_QUEUE_P (stop_reply_p); |
5480 | DEFINE_QUEUE_P (stop_reply_p); | |
5481 | /* The list of already fetched and acknowledged stop events. This | |
5482 | queue is used for notification Stop, and other notifications | |
5483 | don't need queue for their events, because the notification events | |
5484 | of Stop can't be consumed immediately, so that events should be | |
5485 | queued first, and be consumed by remote_wait_{ns,as} one per | |
5486 | time. Other notifications can consume their events immediately, | |
5487 | so queue is not needed for them. */ | |
5488 | static QUEUE (stop_reply_p) *stop_reply_queue; | |
5796c8dc SS |
5489 | |
5490 | static void | |
5491 | stop_reply_xfree (struct stop_reply *r) | |
5492 | { | |
25e4902b | 5493 | notif_event_xfree ((struct notif_event *) r); |
5796c8dc SS |
5494 | } |
5495 | ||
ef5ccd6c JM |
5496 | static void |
5497 | remote_notif_stop_parse (struct notif_client *self, char *buf, | |
5498 | struct notif_event *event) | |
5499 | { | |
5500 | remote_parse_stop_reply (buf, (struct stop_reply *) event); | |
5501 | } | |
5796c8dc SS |
5502 | |
5503 | static void | |
ef5ccd6c JM |
5504 | remote_notif_stop_ack (struct notif_client *self, char *buf, |
5505 | struct notif_event *event) | |
5796c8dc | 5506 | { |
ef5ccd6c | 5507 | struct stop_reply *stop_reply = (struct stop_reply *) event; |
5796c8dc | 5508 | |
ef5ccd6c JM |
5509 | /* acknowledge */ |
5510 | putpkt ((char *) self->ack_command); | |
5796c8dc | 5511 | |
ef5ccd6c JM |
5512 | if (stop_reply->ws.kind == TARGET_WAITKIND_IGNORE) |
5513 | /* We got an unknown stop reply. */ | |
5514 | error (_("Unknown stop reply")); | |
5796c8dc | 5515 | |
ef5ccd6c | 5516 | push_stop_reply (stop_reply); |
5796c8dc SS |
5517 | } |
5518 | ||
ef5ccd6c JM |
5519 | static int |
5520 | remote_notif_stop_can_get_pending_events (struct notif_client *self) | |
5521 | { | |
5522 | /* We can't get pending events in remote_notif_process for | |
5523 | notification stop, and we have to do this in remote_wait_ns | |
5524 | instead. If we fetch all queued events from stub, remote stub | |
5525 | may exit and we have no chance to process them back in | |
5526 | remote_wait_ns. */ | |
5527 | mark_async_event_handler (remote_async_inferior_event_token); | |
5528 | return 0; | |
5529 | } | |
5796c8dc SS |
5530 | |
5531 | static void | |
ef5ccd6c | 5532 | stop_reply_dtr (struct notif_event *event) |
5796c8dc | 5533 | { |
ef5ccd6c | 5534 | struct stop_reply *r = (struct stop_reply *) event; |
cf7f2e2d | 5535 | |
ef5ccd6c | 5536 | VEC_free (cached_reg_t, r->regcache); |
5796c8dc SS |
5537 | } |
5538 | ||
ef5ccd6c JM |
5539 | static struct notif_event * |
5540 | remote_notif_stop_alloc_reply (void) | |
5541 | { | |
5542 | struct notif_event *r | |
25e4902b | 5543 | = (struct notif_event *) XNEW (struct stop_reply); |
5796c8dc | 5544 | |
ef5ccd6c JM |
5545 | r->dtr = stop_reply_dtr; |
5546 | ||
5547 | return r; | |
5548 | } | |
5549 | ||
5550 | /* A client of notification Stop. */ | |
5551 | ||
5552 | struct notif_client notif_client_stop = | |
5796c8dc | 5553 | { |
ef5ccd6c JM |
5554 | "Stop", |
5555 | "vStopped", | |
5556 | remote_notif_stop_parse, | |
5557 | remote_notif_stop_ack, | |
5558 | remote_notif_stop_can_get_pending_events, | |
5559 | remote_notif_stop_alloc_reply, | |
25e4902b | 5560 | REMOTE_NOTIF_STOP, |
ef5ccd6c | 5561 | }; |
5796c8dc | 5562 | |
ef5ccd6c | 5563 | /* A parameter to pass data in and out. */ |
5796c8dc | 5564 | |
ef5ccd6c JM |
5565 | struct queue_iter_param |
5566 | { | |
5567 | void *input; | |
5568 | struct stop_reply *output; | |
5569 | }; | |
5796c8dc | 5570 | |
25e4902b AHJ |
5571 | /* Determine if THREAD is a pending fork parent thread. ARG contains |
5572 | the pid of the process that owns the threads we want to check, or | |
5573 | -1 if we want to check all threads. */ | |
5574 | ||
5575 | static int | |
5576 | is_pending_fork_parent (struct target_waitstatus *ws, int event_pid, | |
5577 | ptid_t thread_ptid) | |
5578 | { | |
5579 | if (ws->kind == TARGET_WAITKIND_FORKED | |
5580 | || ws->kind == TARGET_WAITKIND_VFORKED) | |
5581 | { | |
5582 | if (event_pid == -1 || event_pid == ptid_get_pid (thread_ptid)) | |
5583 | return 1; | |
5584 | } | |
5585 | ||
5586 | return 0; | |
5587 | } | |
5588 | ||
5589 | /* Check whether EVENT is a fork event, and if it is, remove the | |
5590 | fork child from the context list passed in DATA. */ | |
5591 | ||
5592 | static int | |
5593 | remove_child_of_pending_fork (QUEUE (stop_reply_p) *q, | |
5594 | QUEUE_ITER (stop_reply_p) *iter, | |
5595 | stop_reply_p event, | |
5596 | void *data) | |
5597 | { | |
5598 | struct queue_iter_param *param = data; | |
5599 | struct threads_listing_context *context = param->input; | |
5600 | ||
5601 | if (event->ws.kind == TARGET_WAITKIND_FORKED | |
5602 | || event->ws.kind == TARGET_WAITKIND_VFORKED) | |
5603 | { | |
5604 | threads_listing_context_remove (&event->ws, context); | |
5605 | } | |
5606 | ||
5607 | return 1; | |
5608 | } | |
5609 | ||
5610 | /* If CONTEXT contains any fork child threads that have not been | |
5611 | reported yet, remove them from the CONTEXT list. If such a | |
5612 | thread exists it is because we are stopped at a fork catchpoint | |
5613 | and have not yet called follow_fork, which will set up the | |
5614 | host-side data structures for the new process. */ | |
5615 | ||
5616 | static void | |
5617 | remove_new_fork_children (struct threads_listing_context *context) | |
5618 | { | |
5619 | struct thread_info * thread; | |
5620 | int pid = -1; | |
5621 | struct notif_client *notif = ¬if_client_stop; | |
5622 | struct queue_iter_param param; | |
5623 | ||
5624 | /* For any threads stopped at a fork event, remove the corresponding | |
5625 | fork child threads from the CONTEXT list. */ | |
5626 | ALL_NON_EXITED_THREADS (thread) | |
5627 | { | |
5628 | struct target_waitstatus *ws = &thread->pending_follow; | |
5629 | ||
5630 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
5631 | { | |
5632 | threads_listing_context_remove (ws, context); | |
5633 | } | |
5634 | } | |
5635 | ||
5636 | /* Check for any pending fork events (not reported or processed yet) | |
5637 | in process PID and remove those fork child threads from the | |
5638 | CONTEXT list as well. */ | |
5639 | remote_notif_get_pending_events (notif); | |
5640 | param.input = context; | |
5641 | param.output = NULL; | |
5642 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
5643 | remove_child_of_pending_fork, ¶m); | |
5644 | } | |
5645 | ||
5646 | /* Remove stop replies in the queue if its pid is equal to the given | |
5647 | inferior's pid. */ | |
5796c8dc | 5648 | |
ef5ccd6c | 5649 | static int |
25e4902b AHJ |
5650 | remove_stop_reply_for_inferior (QUEUE (stop_reply_p) *q, |
5651 | QUEUE_ITER (stop_reply_p) *iter, | |
5652 | stop_reply_p event, | |
5653 | void *data) | |
ef5ccd6c JM |
5654 | { |
5655 | struct queue_iter_param *param = data; | |
5656 | struct inferior *inf = param->input; | |
5657 | ||
25e4902b | 5658 | if (ptid_get_pid (event->ptid) == inf->pid) |
ef5ccd6c JM |
5659 | { |
5660 | stop_reply_xfree (event); | |
5661 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
5662 | } | |
5663 | ||
5664 | return 1; | |
5796c8dc SS |
5665 | } |
5666 | ||
25e4902b | 5667 | /* Discard all pending stop replies of inferior INF. */ |
5796c8dc SS |
5668 | |
5669 | static void | |
ef5ccd6c | 5670 | discard_pending_stop_replies (struct inferior *inf) |
5796c8dc | 5671 | { |
ef5ccd6c JM |
5672 | int i; |
5673 | struct queue_iter_param param; | |
25e4902b AHJ |
5674 | struct stop_reply *reply; |
5675 | struct remote_state *rs = get_remote_state (); | |
5676 | struct remote_notif_state *rns = rs->notif_state; | |
5677 | ||
5678 | /* This function can be notified when an inferior exists. When the | |
5679 | target is not remote, the notification state is NULL. */ | |
5680 | if (rs->remote_desc == NULL) | |
5681 | return; | |
5682 | ||
5683 | reply = (struct stop_reply *) rns->pending_event[notif_client_stop.id]; | |
5796c8dc | 5684 | |
ef5ccd6c | 5685 | /* Discard the in-flight notification. */ |
25e4902b | 5686 | if (reply != NULL && ptid_get_pid (reply->ptid) == inf->pid) |
5796c8dc | 5687 | { |
ef5ccd6c | 5688 | stop_reply_xfree (reply); |
25e4902b | 5689 | rns->pending_event[notif_client_stop.id] = NULL; |
5796c8dc | 5690 | } |
5796c8dc | 5691 | |
ef5ccd6c JM |
5692 | param.input = inf; |
5693 | param.output = NULL; | |
5694 | /* Discard the stop replies we have already pulled with | |
5695 | vStopped. */ | |
5696 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
25e4902b AHJ |
5697 | remove_stop_reply_for_inferior, ¶m); |
5698 | } | |
5699 | ||
5700 | /* If its remote state is equal to the given remote state, | |
5701 | remove EVENT from the stop reply queue. */ | |
5702 | ||
5703 | static int | |
5704 | remove_stop_reply_of_remote_state (QUEUE (stop_reply_p) *q, | |
5705 | QUEUE_ITER (stop_reply_p) *iter, | |
5706 | stop_reply_p event, | |
5707 | void *data) | |
5708 | { | |
5709 | struct queue_iter_param *param = data; | |
5710 | struct remote_state *rs = param->input; | |
5711 | ||
5712 | if (event->rs == rs) | |
5713 | { | |
5714 | stop_reply_xfree (event); | |
5715 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
5716 | } | |
5717 | ||
5718 | return 1; | |
5719 | } | |
5720 | ||
5721 | /* Discard the stop replies for RS in stop_reply_queue. */ | |
5722 | ||
5723 | static void | |
5724 | discard_pending_stop_replies_in_queue (struct remote_state *rs) | |
5725 | { | |
5726 | struct queue_iter_param param; | |
5727 | ||
5728 | param.input = rs; | |
5729 | param.output = NULL; | |
5730 | /* Discard the stop replies we have already pulled with | |
5731 | vStopped. */ | |
5732 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
5733 | remove_stop_reply_of_remote_state, ¶m); | |
5796c8dc SS |
5734 | } |
5735 | ||
ef5ccd6c | 5736 | /* A parameter to pass data in and out. */ |
5796c8dc SS |
5737 | |
5738 | static int | |
ef5ccd6c JM |
5739 | remote_notif_remove_once_on_match (QUEUE (stop_reply_p) *q, |
5740 | QUEUE_ITER (stop_reply_p) *iter, | |
5741 | stop_reply_p event, | |
5742 | void *data) | |
5796c8dc | 5743 | { |
ef5ccd6c JM |
5744 | struct queue_iter_param *param = data; |
5745 | ptid_t *ptid = param->input; | |
5796c8dc | 5746 | |
ef5ccd6c JM |
5747 | if (ptid_match (event->ptid, *ptid)) |
5748 | { | |
5749 | param->output = event; | |
5750 | QUEUE_remove_elem (stop_reply_p, q, iter); | |
5751 | return 0; | |
5752 | } | |
5796c8dc | 5753 | |
ef5ccd6c JM |
5754 | return 1; |
5755 | } | |
5756 | ||
5757 | /* Remove the first reply in 'stop_reply_queue' which matches | |
5758 | PTID. */ | |
5759 | ||
5760 | static struct stop_reply * | |
5761 | remote_notif_remove_queued_reply (ptid_t ptid) | |
5762 | { | |
5763 | struct queue_iter_param param; | |
5764 | ||
5765 | param.input = &ptid; | |
5766 | param.output = NULL; | |
5767 | ||
5768 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
5769 | remote_notif_remove_once_on_match, ¶m); | |
5770 | if (notif_debug) | |
5771 | fprintf_unfiltered (gdb_stdlog, | |
5772 | "notif: discard queued event: 'Stop' in %s\n", | |
5773 | target_pid_to_str (ptid)); | |
5774 | ||
5775 | return param.output; | |
5776 | } | |
5777 | ||
5778 | /* Look for a queued stop reply belonging to PTID. If one is found, | |
5779 | remove it from the queue, and return it. Returns NULL if none is | |
5780 | found. If there are still queued events left to process, tell the | |
5781 | event loop to get back to target_wait soon. */ | |
5782 | ||
5783 | static struct stop_reply * | |
5784 | queued_stop_reply (ptid_t ptid) | |
5785 | { | |
5786 | struct stop_reply *r = remote_notif_remove_queued_reply (ptid); | |
5787 | ||
5788 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) | |
5789 | /* There's still at least an event left. */ | |
5790 | mark_async_event_handler (remote_async_inferior_event_token); | |
5791 | ||
5792 | return r; | |
5793 | } | |
5794 | ||
5795 | /* Push a fully parsed stop reply in the stop reply queue. Since we | |
5796 | know that we now have at least one queued event left to pass to the | |
5797 | core side, tell the event loop to get back to target_wait soon. */ | |
5798 | ||
5799 | static void | |
5800 | push_stop_reply (struct stop_reply *new_event) | |
5801 | { | |
5802 | QUEUE_enque (stop_reply_p, stop_reply_queue, new_event); | |
5803 | ||
5804 | if (notif_debug) | |
5805 | fprintf_unfiltered (gdb_stdlog, | |
5806 | "notif: push 'Stop' %s to queue %d\n", | |
5807 | target_pid_to_str (new_event->ptid), | |
5808 | QUEUE_length (stop_reply_p, | |
5809 | stop_reply_queue)); | |
5810 | ||
5811 | mark_async_event_handler (remote_async_inferior_event_token); | |
5812 | } | |
5813 | ||
5814 | static int | |
5815 | stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p) *q, | |
5816 | QUEUE_ITER (stop_reply_p) *iter, | |
5817 | struct stop_reply *event, | |
5818 | void *data) | |
5819 | { | |
5820 | ptid_t *ptid = data; | |
5821 | ||
5822 | return !(ptid_equal (*ptid, event->ptid) | |
5823 | && event->ws.kind == TARGET_WAITKIND_STOPPED); | |
5824 | } | |
5825 | ||
5826 | /* Returns true if we have a stop reply for PTID. */ | |
5827 | ||
5828 | static int | |
5829 | peek_stop_reply (ptid_t ptid) | |
5830 | { | |
5831 | return !QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
5832 | stop_reply_match_ptid_and_ws, &ptid); | |
5796c8dc SS |
5833 | } |
5834 | ||
25e4902b AHJ |
5835 | /* Skip PACKET until the next semi-colon (or end of string). */ |
5836 | ||
5837 | static char * | |
5838 | skip_to_semicolon (char *p) | |
5839 | { | |
5840 | while (*p != '\0' && *p != ';') | |
5841 | p++; | |
5842 | return p; | |
5843 | } | |
5844 | ||
5845 | /* Helper for remote_parse_stop_reply. Return nonzero if the substring | |
5846 | starting with P and ending with PEND matches PREFIX. */ | |
5847 | ||
5848 | static int | |
5849 | strprefix (const char *p, const char *pend, const char *prefix) | |
5850 | { | |
5851 | for ( ; p < pend; p++, prefix++) | |
5852 | if (*p != *prefix) | |
5853 | return 0; | |
5854 | return *prefix == '\0'; | |
5855 | } | |
5856 | ||
5796c8dc SS |
5857 | /* Parse the stop reply in BUF. Either the function succeeds, and the |
5858 | result is stored in EVENT, or throws an error. */ | |
5859 | ||
5860 | static void | |
5861 | remote_parse_stop_reply (char *buf, struct stop_reply *event) | |
5862 | { | |
5863 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
5864 | ULONGEST addr; | |
5865 | char *p; | |
5866 | ||
5867 | event->ptid = null_ptid; | |
25e4902b | 5868 | event->rs = get_remote_state (); |
5796c8dc SS |
5869 | event->ws.kind = TARGET_WAITKIND_IGNORE; |
5870 | event->ws.value.integer = 0; | |
25e4902b | 5871 | event->stop_reason = TARGET_STOPPED_BY_NO_REASON; |
5796c8dc | 5872 | event->regcache = NULL; |
cf7f2e2d | 5873 | event->core = -1; |
5796c8dc SS |
5874 | |
5875 | switch (buf[0]) | |
5876 | { | |
5877 | case 'T': /* Status with PC, SP, FP, ... */ | |
5878 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ | |
5879 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
5880 | ss = signal number | |
5881 | n... = register number | |
5882 | r... = register contents | |
5883 | */ | |
5884 | ||
5885 | p = &buf[3]; /* after Txx */ | |
5886 | while (*p) | |
5887 | { | |
5888 | char *p1; | |
5796c8dc | 5889 | int fieldsize; |
5796c8dc | 5890 | |
25e4902b AHJ |
5891 | p1 = strchr (p, ':'); |
5892 | if (p1 == NULL) | |
5893 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
5894 | Packet: '%s'\n"), | |
5895 | p, buf); | |
5896 | if (p == p1) | |
5897 | error (_("Malformed packet(a) (missing register number): %s\n\ | |
5898 | Packet: '%s'\n"), | |
5899 | p, buf); | |
5900 | ||
5901 | /* Some "registers" are actually extended stop information. | |
5902 | Note if you're adding a new entry here: GDB 7.9 and | |
5903 | earlier assume that all register "numbers" that start | |
5904 | with an hex digit are real register numbers. Make sure | |
5905 | the server only sends such a packet if it knows the | |
5906 | client understands it. */ | |
5907 | ||
5908 | if (strprefix (p, p1, "thread")) | |
5909 | event->ptid = read_ptid (++p1, &p); | |
5910 | else if (strprefix (p, p1, "watch") | |
5911 | || strprefix (p, p1, "rwatch") | |
5912 | || strprefix (p, p1, "awatch")) | |
5796c8dc | 5913 | { |
25e4902b AHJ |
5914 | event->stop_reason = TARGET_STOPPED_BY_WATCHPOINT; |
5915 | p = unpack_varlen_hex (++p1, &addr); | |
5916 | event->watch_data_address = (CORE_ADDR) addr; | |
5796c8dc | 5917 | } |
25e4902b AHJ |
5918 | else if (strprefix (p, p1, "swbreak")) |
5919 | { | |
5920 | event->stop_reason = TARGET_STOPPED_BY_SW_BREAKPOINT; | |
5921 | ||
5922 | /* Make sure the stub doesn't forget to indicate support | |
5923 | with qSupported. */ | |
5924 | if (packet_support (PACKET_swbreak_feature) != PACKET_ENABLE) | |
5925 | error (_("Unexpected swbreak stop reason")); | |
5796c8dc | 5926 | |
25e4902b AHJ |
5927 | /* The value part is documented as "must be empty", |
5928 | though we ignore it, in case we ever decide to make | |
5929 | use of it in a backward compatible way. */ | |
5930 | p = skip_to_semicolon (p1 + 1); | |
5931 | } | |
5932 | else if (strprefix (p, p1, "hwbreak")) | |
5796c8dc | 5933 | { |
25e4902b | 5934 | event->stop_reason = TARGET_STOPPED_BY_HW_BREAKPOINT; |
5796c8dc | 5935 | |
25e4902b AHJ |
5936 | /* Make sure the stub doesn't forget to indicate support |
5937 | with qSupported. */ | |
5938 | if (packet_support (PACKET_hwbreak_feature) != PACKET_ENABLE) | |
5939 | error (_("Unexpected hwbreak stop reason")); | |
5940 | ||
5941 | /* See above. */ | |
5942 | p = skip_to_semicolon (p1 + 1); | |
5943 | } | |
5944 | else if (strprefix (p, p1, "library")) | |
5945 | { | |
5946 | event->ws.kind = TARGET_WAITKIND_LOADED; | |
5947 | p = skip_to_semicolon (p1 + 1); | |
5948 | } | |
5949 | else if (strprefix (p, p1, "replaylog")) | |
5950 | { | |
5951 | event->ws.kind = TARGET_WAITKIND_NO_HISTORY; | |
5952 | /* p1 will indicate "begin" or "end", but it makes | |
5953 | no difference for now, so ignore it. */ | |
5954 | p = skip_to_semicolon (p1 + 1); | |
5955 | } | |
5956 | else if (strprefix (p, p1, "core")) | |
5957 | { | |
5958 | ULONGEST c; | |
cf7f2e2d | 5959 | |
25e4902b AHJ |
5960 | p = unpack_varlen_hex (++p1, &c); |
5961 | event->core = c; | |
5962 | } | |
5963 | else if (strprefix (p, p1, "fork")) | |
5964 | { | |
5965 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
5966 | event->ws.kind = TARGET_WAITKIND_FORKED; | |
5967 | } | |
5968 | else if (strprefix (p, p1, "vfork")) | |
5969 | { | |
5970 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
5971 | event->ws.kind = TARGET_WAITKIND_VFORKED; | |
5972 | } | |
5973 | else if (strprefix (p, p1, "vforkdone")) | |
5974 | { | |
5975 | event->ws.kind = TARGET_WAITKIND_VFORK_DONE; | |
5976 | p = skip_to_semicolon (p1 + 1); | |
5796c8dc SS |
5977 | } |
5978 | else | |
5979 | { | |
25e4902b AHJ |
5980 | ULONGEST pnum; |
5981 | char *p_temp; | |
5982 | ||
5983 | /* Maybe a real ``P'' register number. */ | |
5984 | p_temp = unpack_varlen_hex (p, &pnum); | |
5985 | /* If the first invalid character is the colon, we got a | |
5986 | register number. Otherwise, it's an unknown stop | |
5987 | reason. */ | |
5988 | if (p_temp == p1) | |
5989 | { | |
5990 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); | |
5991 | cached_reg_t cached_reg; | |
5796c8dc | 5992 | |
25e4902b AHJ |
5993 | if (reg == NULL) |
5994 | error (_("Remote sent bad register number %s: %s\n\ | |
5796c8dc | 5995 | Packet: '%s'\n"), |
25e4902b | 5996 | hex_string (pnum), p, buf); |
5796c8dc | 5997 | |
25e4902b | 5998 | cached_reg.num = reg->regnum; |
5796c8dc | 5999 | |
25e4902b AHJ |
6000 | p = p1 + 1; |
6001 | fieldsize = hex2bin (p, cached_reg.data, | |
6002 | register_size (target_gdbarch (), | |
6003 | reg->regnum)); | |
6004 | p += 2 * fieldsize; | |
6005 | if (fieldsize < register_size (target_gdbarch (), | |
6006 | reg->regnum)) | |
6007 | warning (_("Remote reply is too short: %s"), buf); | |
5796c8dc | 6008 | |
25e4902b AHJ |
6009 | VEC_safe_push (cached_reg_t, event->regcache, &cached_reg); |
6010 | } | |
6011 | else | |
6012 | { | |
6013 | /* Not a number. Silently skip unknown optional | |
6014 | info. */ | |
6015 | p = skip_to_semicolon (p1 + 1); | |
6016 | } | |
5796c8dc SS |
6017 | } |
6018 | ||
6019 | if (*p != ';') | |
6020 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
6021 | buf, p); | |
6022 | ++p; | |
6023 | } | |
25e4902b AHJ |
6024 | |
6025 | if (event->ws.kind != TARGET_WAITKIND_IGNORE) | |
6026 | break; | |
6027 | ||
5796c8dc SS |
6028 | /* fall through */ |
6029 | case 'S': /* Old style status, just signal only. */ | |
25e4902b AHJ |
6030 | { |
6031 | int sig; | |
6032 | ||
6033 | event->ws.kind = TARGET_WAITKIND_STOPPED; | |
6034 | sig = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
6035 | if (GDB_SIGNAL_FIRST <= sig && sig < GDB_SIGNAL_LAST) | |
6036 | event->ws.value.sig = (enum gdb_signal) sig; | |
6037 | else | |
6038 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
6039 | } | |
5796c8dc SS |
6040 | break; |
6041 | case 'W': /* Target exited. */ | |
6042 | case 'X': | |
6043 | { | |
6044 | char *p; | |
6045 | int pid; | |
6046 | ULONGEST value; | |
6047 | ||
6048 | /* GDB used to accept only 2 hex chars here. Stubs should | |
6049 | only send more if they detect GDB supports multi-process | |
6050 | support. */ | |
6051 | p = unpack_varlen_hex (&buf[1], &value); | |
6052 | ||
6053 | if (buf[0] == 'W') | |
6054 | { | |
6055 | /* The remote process exited. */ | |
6056 | event->ws.kind = TARGET_WAITKIND_EXITED; | |
6057 | event->ws.value.integer = value; | |
6058 | } | |
6059 | else | |
6060 | { | |
6061 | /* The remote process exited with a signal. */ | |
6062 | event->ws.kind = TARGET_WAITKIND_SIGNALLED; | |
25e4902b AHJ |
6063 | if (GDB_SIGNAL_FIRST <= value && value < GDB_SIGNAL_LAST) |
6064 | event->ws.value.sig = (enum gdb_signal) value; | |
6065 | else | |
6066 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
5796c8dc SS |
6067 | } |
6068 | ||
6069 | /* If no process is specified, assume inferior_ptid. */ | |
6070 | pid = ptid_get_pid (inferior_ptid); | |
6071 | if (*p == '\0') | |
6072 | ; | |
6073 | else if (*p == ';') | |
6074 | { | |
6075 | p++; | |
6076 | ||
25e4902b | 6077 | if (*p == '\0') |
5796c8dc | 6078 | ; |
25e4902b | 6079 | else if (startswith (p, "process:")) |
5796c8dc SS |
6080 | { |
6081 | ULONGEST upid; | |
cf7f2e2d | 6082 | |
5796c8dc SS |
6083 | p += sizeof ("process:") - 1; |
6084 | unpack_varlen_hex (p, &upid); | |
6085 | pid = upid; | |
6086 | } | |
6087 | else | |
6088 | error (_("unknown stop reply packet: %s"), buf); | |
6089 | } | |
6090 | else | |
6091 | error (_("unknown stop reply packet: %s"), buf); | |
6092 | event->ptid = pid_to_ptid (pid); | |
6093 | } | |
6094 | break; | |
6095 | } | |
6096 | ||
6097 | if (non_stop && ptid_equal (event->ptid, null_ptid)) | |
6098 | error (_("No process or thread specified in stop reply: %s"), buf); | |
6099 | } | |
6100 | ||
ef5ccd6c JM |
6101 | /* When the stub wants to tell GDB about a new notification reply, it |
6102 | sends a notification (%Stop, for example). Those can come it at | |
6103 | any time, hence, we have to make sure that any pending | |
6104 | putpkt/getpkt sequence we're making is finished, before querying | |
6105 | the stub for more events with the corresponding ack command | |
6106 | (vStopped, for example). E.g., if we started a vStopped sequence | |
6107 | immediately upon receiving the notification, something like this | |
6108 | could happen: | |
5796c8dc SS |
6109 | |
6110 | 1.1) --> Hg 1 | |
6111 | 1.2) <-- OK | |
6112 | 1.3) --> g | |
6113 | 1.4) <-- %Stop | |
6114 | 1.5) --> vStopped | |
6115 | 1.6) <-- (registers reply to step #1.3) | |
6116 | ||
6117 | Obviously, the reply in step #1.6 would be unexpected to a vStopped | |
6118 | query. | |
6119 | ||
ef5ccd6c | 6120 | To solve this, whenever we parse a %Stop notification successfully, |
5796c8dc SS |
6121 | we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on |
6122 | doing whatever we were doing: | |
6123 | ||
6124 | 2.1) --> Hg 1 | |
6125 | 2.2) <-- OK | |
6126 | 2.3) --> g | |
6127 | 2.4) <-- %Stop | |
6128 | <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN> | |
6129 | 2.5) <-- (registers reply to step #2.3) | |
6130 | ||
6131 | Eventualy after step #2.5, we return to the event loop, which | |
6132 | notices there's an event on the | |
6133 | REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the | |
6134 | associated callback --- the function below. At this point, we're | |
6135 | always safe to start a vStopped sequence. : | |
6136 | ||
6137 | 2.6) --> vStopped | |
6138 | 2.7) <-- T05 thread:2 | |
6139 | 2.8) --> vStopped | |
6140 | 2.9) --> OK | |
6141 | */ | |
6142 | ||
ef5ccd6c JM |
6143 | void |
6144 | remote_notif_get_pending_events (struct notif_client *nc) | |
5796c8dc SS |
6145 | { |
6146 | struct remote_state *rs = get_remote_state (); | |
6147 | ||
25e4902b | 6148 | if (rs->notif_state->pending_event[nc->id] != NULL) |
5796c8dc | 6149 | { |
ef5ccd6c JM |
6150 | if (notif_debug) |
6151 | fprintf_unfiltered (gdb_stdlog, | |
6152 | "notif: process: '%s' ack pending event\n", | |
6153 | nc->name); | |
5796c8dc | 6154 | |
ef5ccd6c | 6155 | /* acknowledge */ |
25e4902b AHJ |
6156 | nc->ack (nc, rs->buf, rs->notif_state->pending_event[nc->id]); |
6157 | rs->notif_state->pending_event[nc->id] = NULL; | |
5796c8dc SS |
6158 | |
6159 | while (1) | |
6160 | { | |
6161 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6162 | if (strcmp (rs->buf, "OK") == 0) | |
6163 | break; | |
6164 | else | |
ef5ccd6c | 6165 | remote_notif_ack (nc, rs->buf); |
5796c8dc SS |
6166 | } |
6167 | } | |
ef5ccd6c JM |
6168 | else |
6169 | { | |
6170 | if (notif_debug) | |
6171 | fprintf_unfiltered (gdb_stdlog, | |
6172 | "notif: process: '%s' no pending reply\n", | |
6173 | nc->name); | |
6174 | } | |
5796c8dc SS |
6175 | } |
6176 | ||
5796c8dc SS |
6177 | /* Called when it is decided that STOP_REPLY holds the info of the |
6178 | event that is to be returned to the core. This function always | |
6179 | destroys STOP_REPLY. */ | |
6180 | ||
6181 | static ptid_t | |
6182 | process_stop_reply (struct stop_reply *stop_reply, | |
6183 | struct target_waitstatus *status) | |
6184 | { | |
6185 | ptid_t ptid; | |
6186 | ||
6187 | *status = stop_reply->ws; | |
6188 | ptid = stop_reply->ptid; | |
6189 | ||
6190 | /* If no thread/process was reported by the stub, assume the current | |
6191 | inferior. */ | |
6192 | if (ptid_equal (ptid, null_ptid)) | |
6193 | ptid = inferior_ptid; | |
6194 | ||
6195 | if (status->kind != TARGET_WAITKIND_EXITED | |
6196 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
6197 | { | |
25e4902b AHJ |
6198 | struct remote_state *rs = get_remote_state (); |
6199 | ||
5796c8dc SS |
6200 | /* Expedited registers. */ |
6201 | if (stop_reply->regcache) | |
6202 | { | |
6203 | struct regcache *regcache | |
ef5ccd6c | 6204 | = get_thread_arch_regcache (ptid, target_gdbarch ()); |
5796c8dc SS |
6205 | cached_reg_t *reg; |
6206 | int ix; | |
6207 | ||
6208 | for (ix = 0; | |
6209 | VEC_iterate(cached_reg_t, stop_reply->regcache, ix, reg); | |
6210 | ix++) | |
6211 | regcache_raw_supply (regcache, reg->num, reg->data); | |
6212 | VEC_free (cached_reg_t, stop_reply->regcache); | |
6213 | } | |
6214 | ||
25e4902b AHJ |
6215 | rs->stop_reason = stop_reply->stop_reason; |
6216 | rs->remote_watch_data_address = stop_reply->watch_data_address; | |
5796c8dc SS |
6217 | |
6218 | remote_notice_new_inferior (ptid, 0); | |
cf7f2e2d | 6219 | demand_private_info (ptid)->core = stop_reply->core; |
5796c8dc SS |
6220 | } |
6221 | ||
6222 | stop_reply_xfree (stop_reply); | |
6223 | return ptid; | |
6224 | } | |
6225 | ||
6226 | /* The non-stop mode version of target_wait. */ | |
6227 | ||
6228 | static ptid_t | |
6229 | remote_wait_ns (ptid_t ptid, struct target_waitstatus *status, int options) | |
6230 | { | |
6231 | struct remote_state *rs = get_remote_state (); | |
6232 | struct stop_reply *stop_reply; | |
6233 | int ret; | |
ef5ccd6c | 6234 | int is_notif = 0; |
5796c8dc SS |
6235 | |
6236 | /* If in non-stop mode, get out of getpkt even if a | |
6237 | notification is received. */ | |
6238 | ||
6239 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, | |
ef5ccd6c | 6240 | 0 /* forever */, &is_notif); |
5796c8dc SS |
6241 | while (1) |
6242 | { | |
ef5ccd6c | 6243 | if (ret != -1 && !is_notif) |
5796c8dc SS |
6244 | switch (rs->buf[0]) |
6245 | { | |
6246 | case 'E': /* Error of some sort. */ | |
6247 | /* We're out of sync with the target now. Did it continue | |
6248 | or not? We can't tell which thread it was in non-stop, | |
6249 | so just ignore this. */ | |
6250 | warning (_("Remote failure reply: %s"), rs->buf); | |
6251 | break; | |
6252 | case 'O': /* Console output. */ | |
6253 | remote_console_output (rs->buf + 1); | |
6254 | break; | |
6255 | default: | |
6256 | warning (_("Invalid remote reply: %s"), rs->buf); | |
6257 | break; | |
6258 | } | |
6259 | ||
6260 | /* Acknowledge a pending stop reply that may have arrived in the | |
6261 | mean time. */ | |
25e4902b | 6262 | if (rs->notif_state->pending_event[notif_client_stop.id] != NULL) |
ef5ccd6c | 6263 | remote_notif_get_pending_events (¬if_client_stop); |
5796c8dc SS |
6264 | |
6265 | /* If indeed we noticed a stop reply, we're done. */ | |
6266 | stop_reply = queued_stop_reply (ptid); | |
6267 | if (stop_reply != NULL) | |
6268 | return process_stop_reply (stop_reply, status); | |
6269 | ||
6270 | /* Still no event. If we're just polling for an event, then | |
6271 | return to the event loop. */ | |
6272 | if (options & TARGET_WNOHANG) | |
6273 | { | |
6274 | status->kind = TARGET_WAITKIND_IGNORE; | |
6275 | return minus_one_ptid; | |
6276 | } | |
6277 | ||
6278 | /* Otherwise do a blocking wait. */ | |
6279 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, | |
ef5ccd6c | 6280 | 1 /* forever */, &is_notif); |
5796c8dc SS |
6281 | } |
6282 | } | |
6283 | ||
6284 | /* Wait until the remote machine stops, then return, storing status in | |
6285 | STATUS just as `wait' would. */ | |
6286 | ||
6287 | static ptid_t | |
6288 | remote_wait_as (ptid_t ptid, struct target_waitstatus *status, int options) | |
6289 | { | |
6290 | struct remote_state *rs = get_remote_state (); | |
6291 | ptid_t event_ptid = null_ptid; | |
6292 | char *buf; | |
6293 | struct stop_reply *stop_reply; | |
6294 | ||
6295 | again: | |
6296 | ||
6297 | status->kind = TARGET_WAITKIND_IGNORE; | |
6298 | status->value.integer = 0; | |
6299 | ||
6300 | stop_reply = queued_stop_reply (ptid); | |
6301 | if (stop_reply != NULL) | |
6302 | return process_stop_reply (stop_reply, status); | |
6303 | ||
6304 | if (rs->cached_wait_status) | |
6305 | /* Use the cached wait status, but only once. */ | |
6306 | rs->cached_wait_status = 0; | |
6307 | else | |
6308 | { | |
6309 | int ret; | |
ef5ccd6c | 6310 | int is_notif; |
5796c8dc SS |
6311 | |
6312 | if (!target_is_async_p ()) | |
6313 | { | |
25e4902b | 6314 | ofunc = signal (SIGINT, sync_remote_interrupt); |
5796c8dc SS |
6315 | /* If the user hit C-c before this packet, or between packets, |
6316 | pretend that it was hit right here. */ | |
ef5ccd6c | 6317 | if (check_quit_flag ()) |
5796c8dc | 6318 | { |
ef5ccd6c | 6319 | clear_quit_flag (); |
25e4902b | 6320 | sync_remote_interrupt (SIGINT); |
5796c8dc SS |
6321 | } |
6322 | } | |
6323 | ||
6324 | /* FIXME: cagney/1999-09-27: If we're in async mode we should | |
6325 | _never_ wait for ever -> test on target_is_async_p(). | |
6326 | However, before we do that we need to ensure that the caller | |
6327 | knows how to take the target into/out of async mode. */ | |
ef5ccd6c JM |
6328 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
6329 | wait_forever_enabled_p, &is_notif); | |
6330 | ||
25e4902b AHJ |
6331 | if (!target_is_async_p ()) |
6332 | signal (SIGINT, ofunc); | |
6333 | ||
ef5ccd6c JM |
6334 | /* GDB gets a notification. Return to core as this event is |
6335 | not interesting. */ | |
6336 | if (ret != -1 && is_notif) | |
6337 | return minus_one_ptid; | |
5796c8dc SS |
6338 | } |
6339 | ||
6340 | buf = rs->buf; | |
6341 | ||
25e4902b | 6342 | rs->stop_reason = TARGET_STOPPED_BY_NO_REASON; |
5796c8dc SS |
6343 | |
6344 | /* We got something. */ | |
6345 | rs->waiting_for_stop_reply = 0; | |
6346 | ||
cf7f2e2d JM |
6347 | /* Assume that the target has acknowledged Ctrl-C unless we receive |
6348 | an 'F' or 'O' packet. */ | |
6349 | if (buf[0] != 'F' && buf[0] != 'O') | |
6350 | rs->ctrlc_pending_p = 0; | |
6351 | ||
5796c8dc SS |
6352 | switch (buf[0]) |
6353 | { | |
6354 | case 'E': /* Error of some sort. */ | |
6355 | /* We're out of sync with the target now. Did it continue or | |
6356 | not? Not is more likely, so report a stop. */ | |
6357 | warning (_("Remote failure reply: %s"), buf); | |
6358 | status->kind = TARGET_WAITKIND_STOPPED; | |
ef5ccd6c | 6359 | status->value.sig = GDB_SIGNAL_0; |
5796c8dc SS |
6360 | break; |
6361 | case 'F': /* File-I/O request. */ | |
cf7f2e2d JM |
6362 | remote_fileio_request (buf, rs->ctrlc_pending_p); |
6363 | rs->ctrlc_pending_p = 0; | |
5796c8dc SS |
6364 | break; |
6365 | case 'T': case 'S': case 'X': case 'W': | |
6366 | { | |
ef5ccd6c JM |
6367 | struct stop_reply *stop_reply |
6368 | = (struct stop_reply *) remote_notif_parse (¬if_client_stop, | |
6369 | rs->buf); | |
5796c8dc | 6370 | |
5796c8dc SS |
6371 | event_ptid = process_stop_reply (stop_reply, status); |
6372 | break; | |
6373 | } | |
6374 | case 'O': /* Console output. */ | |
6375 | remote_console_output (buf + 1); | |
6376 | ||
6377 | /* The target didn't really stop; keep waiting. */ | |
6378 | rs->waiting_for_stop_reply = 1; | |
6379 | ||
6380 | break; | |
6381 | case '\0': | |
25e4902b | 6382 | if (rs->last_sent_signal != GDB_SIGNAL_0) |
5796c8dc SS |
6383 | { |
6384 | /* Zero length reply means that we tried 'S' or 'C' and the | |
6385 | remote system doesn't support it. */ | |
6386 | target_terminal_ours_for_output (); | |
6387 | printf_filtered | |
6388 | ("Can't send signals to this remote system. %s not sent.\n", | |
25e4902b AHJ |
6389 | gdb_signal_to_name (rs->last_sent_signal)); |
6390 | rs->last_sent_signal = GDB_SIGNAL_0; | |
5796c8dc SS |
6391 | target_terminal_inferior (); |
6392 | ||
25e4902b | 6393 | strcpy ((char *) buf, rs->last_sent_step ? "s" : "c"); |
5796c8dc SS |
6394 | putpkt ((char *) buf); |
6395 | ||
6396 | /* We just told the target to resume, so a stop reply is in | |
6397 | order. */ | |
6398 | rs->waiting_for_stop_reply = 1; | |
6399 | break; | |
6400 | } | |
6401 | /* else fallthrough */ | |
6402 | default: | |
6403 | warning (_("Invalid remote reply: %s"), buf); | |
6404 | /* Keep waiting. */ | |
6405 | rs->waiting_for_stop_reply = 1; | |
6406 | break; | |
6407 | } | |
6408 | ||
6409 | if (status->kind == TARGET_WAITKIND_IGNORE) | |
6410 | { | |
6411 | /* Nothing interesting happened. If we're doing a non-blocking | |
6412 | poll, we're done. Otherwise, go back to waiting. */ | |
6413 | if (options & TARGET_WNOHANG) | |
6414 | return minus_one_ptid; | |
6415 | else | |
6416 | goto again; | |
6417 | } | |
6418 | else if (status->kind != TARGET_WAITKIND_EXITED | |
6419 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
6420 | { | |
6421 | if (!ptid_equal (event_ptid, null_ptid)) | |
25e4902b | 6422 | record_currthread (rs, event_ptid); |
5796c8dc SS |
6423 | else |
6424 | event_ptid = inferior_ptid; | |
6425 | } | |
6426 | else | |
6427 | /* A process exit. Invalidate our notion of current thread. */ | |
25e4902b | 6428 | record_currthread (rs, minus_one_ptid); |
5796c8dc SS |
6429 | |
6430 | return event_ptid; | |
6431 | } | |
6432 | ||
6433 | /* Wait until the remote machine stops, then return, storing status in | |
6434 | STATUS just as `wait' would. */ | |
6435 | ||
6436 | static ptid_t | |
6437 | remote_wait (struct target_ops *ops, | |
6438 | ptid_t ptid, struct target_waitstatus *status, int options) | |
6439 | { | |
6440 | ptid_t event_ptid; | |
6441 | ||
6442 | if (non_stop) | |
6443 | event_ptid = remote_wait_ns (ptid, status, options); | |
6444 | else | |
6445 | event_ptid = remote_wait_as (ptid, status, options); | |
6446 | ||
25e4902b | 6447 | if (target_is_async_p ()) |
5796c8dc SS |
6448 | { |
6449 | /* If there are are events left in the queue tell the event loop | |
6450 | to return here. */ | |
ef5ccd6c | 6451 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) |
5796c8dc SS |
6452 | mark_async_event_handler (remote_async_inferior_event_token); |
6453 | } | |
6454 | ||
6455 | return event_ptid; | |
6456 | } | |
6457 | ||
6458 | /* Fetch a single register using a 'p' packet. */ | |
6459 | ||
6460 | static int | |
6461 | fetch_register_using_p (struct regcache *regcache, struct packet_reg *reg) | |
6462 | { | |
6463 | struct remote_state *rs = get_remote_state (); | |
6464 | char *buf, *p; | |
6465 | char regp[MAX_REGISTER_SIZE]; | |
6466 | int i; | |
6467 | ||
25e4902b | 6468 | if (packet_support (PACKET_p) == PACKET_DISABLE) |
5796c8dc SS |
6469 | return 0; |
6470 | ||
6471 | if (reg->pnum == -1) | |
6472 | return 0; | |
6473 | ||
6474 | p = rs->buf; | |
6475 | *p++ = 'p'; | |
6476 | p += hexnumstr (p, reg->pnum); | |
6477 | *p++ = '\0'; | |
6478 | putpkt (rs->buf); | |
6479 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6480 | ||
6481 | buf = rs->buf; | |
6482 | ||
6483 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_p])) | |
6484 | { | |
6485 | case PACKET_OK: | |
6486 | break; | |
6487 | case PACKET_UNKNOWN: | |
6488 | return 0; | |
6489 | case PACKET_ERROR: | |
6490 | error (_("Could not fetch register \"%s\"; remote failure reply '%s'"), | |
6491 | gdbarch_register_name (get_regcache_arch (regcache), | |
6492 | reg->regnum), | |
6493 | buf); | |
6494 | } | |
6495 | ||
6496 | /* If this register is unfetchable, tell the regcache. */ | |
6497 | if (buf[0] == 'x') | |
6498 | { | |
6499 | regcache_raw_supply (regcache, reg->regnum, NULL); | |
6500 | return 1; | |
6501 | } | |
6502 | ||
6503 | /* Otherwise, parse and supply the value. */ | |
6504 | p = buf; | |
6505 | i = 0; | |
6506 | while (p[0] != 0) | |
6507 | { | |
6508 | if (p[1] == 0) | |
6509 | error (_("fetch_register_using_p: early buf termination")); | |
6510 | ||
6511 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
6512 | p += 2; | |
6513 | } | |
6514 | regcache_raw_supply (regcache, reg->regnum, regp); | |
6515 | return 1; | |
6516 | } | |
6517 | ||
6518 | /* Fetch the registers included in the target's 'g' packet. */ | |
6519 | ||
6520 | static int | |
6521 | send_g_packet (void) | |
6522 | { | |
6523 | struct remote_state *rs = get_remote_state (); | |
6524 | int buf_len; | |
6525 | ||
ef5ccd6c | 6526 | xsnprintf (rs->buf, get_remote_packet_size (), "g"); |
5796c8dc SS |
6527 | remote_send (&rs->buf, &rs->buf_size); |
6528 | ||
6529 | /* We can get out of synch in various cases. If the first character | |
6530 | in the buffer is not a hex character, assume that has happened | |
6531 | and try to fetch another packet to read. */ | |
6532 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
6533 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
6534 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
6535 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
6536 | { | |
6537 | if (remote_debug) | |
6538 | fprintf_unfiltered (gdb_stdlog, | |
6539 | "Bad register packet; fetching a new packet\n"); | |
6540 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6541 | } | |
6542 | ||
6543 | buf_len = strlen (rs->buf); | |
6544 | ||
6545 | /* Sanity check the received packet. */ | |
6546 | if (buf_len % 2 != 0) | |
6547 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf); | |
6548 | ||
6549 | return buf_len / 2; | |
6550 | } | |
6551 | ||
6552 | static void | |
6553 | process_g_packet (struct regcache *regcache) | |
6554 | { | |
6555 | struct gdbarch *gdbarch = get_regcache_arch (regcache); | |
6556 | struct remote_state *rs = get_remote_state (); | |
6557 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
6558 | int i, buf_len; | |
6559 | char *p; | |
6560 | char *regs; | |
6561 | ||
6562 | buf_len = strlen (rs->buf); | |
6563 | ||
6564 | /* Further sanity checks, with knowledge of the architecture. */ | |
6565 | if (buf_len > 2 * rsa->sizeof_g_packet) | |
6566 | error (_("Remote 'g' packet reply is too long: %s"), rs->buf); | |
6567 | ||
6568 | /* Save the size of the packet sent to us by the target. It is used | |
6569 | as a heuristic when determining the max size of packets that the | |
6570 | target can safely receive. */ | |
6571 | if (rsa->actual_register_packet_size == 0) | |
6572 | rsa->actual_register_packet_size = buf_len; | |
6573 | ||
6574 | /* If this is smaller than we guessed the 'g' packet would be, | |
6575 | update our records. A 'g' reply that doesn't include a register's | |
6576 | value implies either that the register is not available, or that | |
6577 | the 'p' packet must be used. */ | |
6578 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
6579 | { | |
6580 | rsa->sizeof_g_packet = buf_len / 2; | |
6581 | ||
6582 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) | |
6583 | { | |
6584 | if (rsa->regs[i].pnum == -1) | |
6585 | continue; | |
6586 | ||
6587 | if (rsa->regs[i].offset >= rsa->sizeof_g_packet) | |
6588 | rsa->regs[i].in_g_packet = 0; | |
6589 | else | |
6590 | rsa->regs[i].in_g_packet = 1; | |
6591 | } | |
6592 | } | |
6593 | ||
6594 | regs = alloca (rsa->sizeof_g_packet); | |
6595 | ||
6596 | /* Unimplemented registers read as all bits zero. */ | |
6597 | memset (regs, 0, rsa->sizeof_g_packet); | |
6598 | ||
6599 | /* Reply describes registers byte by byte, each byte encoded as two | |
6600 | hex characters. Suck them all up, then supply them to the | |
6601 | register cacheing/storage mechanism. */ | |
6602 | ||
6603 | p = rs->buf; | |
6604 | for (i = 0; i < rsa->sizeof_g_packet; i++) | |
6605 | { | |
6606 | if (p[0] == 0 || p[1] == 0) | |
6607 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
6608 | internal_error (__FILE__, __LINE__, | |
c50c785c | 6609 | _("unexpected end of 'g' packet reply")); |
5796c8dc SS |
6610 | |
6611 | if (p[0] == 'x' && p[1] == 'x') | |
6612 | regs[i] = 0; /* 'x' */ | |
6613 | else | |
6614 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
6615 | p += 2; | |
6616 | } | |
6617 | ||
cf7f2e2d JM |
6618 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
6619 | { | |
6620 | struct packet_reg *r = &rsa->regs[i]; | |
6621 | ||
6622 | if (r->in_g_packet) | |
6623 | { | |
6624 | if (r->offset * 2 >= strlen (rs->buf)) | |
6625 | /* This shouldn't happen - we adjusted in_g_packet above. */ | |
6626 | internal_error (__FILE__, __LINE__, | |
c50c785c | 6627 | _("unexpected end of 'g' packet reply")); |
cf7f2e2d JM |
6628 | else if (rs->buf[r->offset * 2] == 'x') |
6629 | { | |
6630 | gdb_assert (r->offset * 2 < strlen (rs->buf)); | |
6631 | /* The register isn't available, mark it as such (at | |
6632 | the same time setting the value to zero). */ | |
6633 | regcache_raw_supply (regcache, r->regnum, NULL); | |
6634 | } | |
6635 | else | |
6636 | regcache_raw_supply (regcache, r->regnum, | |
6637 | regs + r->offset); | |
6638 | } | |
6639 | } | |
5796c8dc SS |
6640 | } |
6641 | ||
6642 | static void | |
6643 | fetch_registers_using_g (struct regcache *regcache) | |
6644 | { | |
6645 | send_g_packet (); | |
6646 | process_g_packet (regcache); | |
6647 | } | |
6648 | ||
c50c785c JM |
6649 | /* Make the remote selected traceframe match GDB's selected |
6650 | traceframe. */ | |
6651 | ||
6652 | static void | |
6653 | set_remote_traceframe (void) | |
6654 | { | |
6655 | int newnum; | |
25e4902b | 6656 | struct remote_state *rs = get_remote_state (); |
c50c785c | 6657 | |
25e4902b | 6658 | if (rs->remote_traceframe_number == get_traceframe_number ()) |
c50c785c JM |
6659 | return; |
6660 | ||
6661 | /* Avoid recursion, remote_trace_find calls us again. */ | |
25e4902b | 6662 | rs->remote_traceframe_number = get_traceframe_number (); |
c50c785c JM |
6663 | |
6664 | newnum = target_trace_find (tfind_number, | |
6665 | get_traceframe_number (), 0, 0, NULL); | |
6666 | ||
6667 | /* Should not happen. If it does, all bets are off. */ | |
6668 | if (newnum != get_traceframe_number ()) | |
6669 | warning (_("could not set remote traceframe")); | |
6670 | } | |
6671 | ||
5796c8dc SS |
6672 | static void |
6673 | remote_fetch_registers (struct target_ops *ops, | |
6674 | struct regcache *regcache, int regnum) | |
6675 | { | |
6676 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
6677 | int i; | |
6678 | ||
c50c785c | 6679 | set_remote_traceframe (); |
5796c8dc SS |
6680 | set_general_thread (inferior_ptid); |
6681 | ||
6682 | if (regnum >= 0) | |
6683 | { | |
6684 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
cf7f2e2d | 6685 | |
5796c8dc SS |
6686 | gdb_assert (reg != NULL); |
6687 | ||
6688 | /* If this register might be in the 'g' packet, try that first - | |
6689 | we are likely to read more than one register. If this is the | |
6690 | first 'g' packet, we might be overly optimistic about its | |
6691 | contents, so fall back to 'p'. */ | |
6692 | if (reg->in_g_packet) | |
6693 | { | |
6694 | fetch_registers_using_g (regcache); | |
6695 | if (reg->in_g_packet) | |
6696 | return; | |
6697 | } | |
6698 | ||
6699 | if (fetch_register_using_p (regcache, reg)) | |
6700 | return; | |
6701 | ||
6702 | /* This register is not available. */ | |
6703 | regcache_raw_supply (regcache, reg->regnum, NULL); | |
6704 | ||
6705 | return; | |
6706 | } | |
6707 | ||
6708 | fetch_registers_using_g (regcache); | |
6709 | ||
6710 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) | |
6711 | if (!rsa->regs[i].in_g_packet) | |
6712 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) | |
6713 | { | |
6714 | /* This register is not available. */ | |
6715 | regcache_raw_supply (regcache, i, NULL); | |
6716 | } | |
6717 | } | |
6718 | ||
6719 | /* Prepare to store registers. Since we may send them all (using a | |
6720 | 'G' request), we have to read out the ones we don't want to change | |
6721 | first. */ | |
6722 | ||
6723 | static void | |
25e4902b | 6724 | remote_prepare_to_store (struct target_ops *self, struct regcache *regcache) |
5796c8dc SS |
6725 | { |
6726 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
6727 | int i; | |
6728 | gdb_byte buf[MAX_REGISTER_SIZE]; | |
6729 | ||
6730 | /* Make sure the entire registers array is valid. */ | |
25e4902b | 6731 | switch (packet_support (PACKET_P)) |
5796c8dc SS |
6732 | { |
6733 | case PACKET_DISABLE: | |
6734 | case PACKET_SUPPORT_UNKNOWN: | |
6735 | /* Make sure all the necessary registers are cached. */ | |
6736 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) | |
6737 | if (rsa->regs[i].in_g_packet) | |
6738 | regcache_raw_read (regcache, rsa->regs[i].regnum, buf); | |
6739 | break; | |
6740 | case PACKET_ENABLE: | |
6741 | break; | |
6742 | } | |
6743 | } | |
6744 | ||
6745 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF | |
6746 | packet was not recognized. */ | |
6747 | ||
6748 | static int | |
6749 | store_register_using_P (const struct regcache *regcache, | |
6750 | struct packet_reg *reg) | |
6751 | { | |
6752 | struct gdbarch *gdbarch = get_regcache_arch (regcache); | |
6753 | struct remote_state *rs = get_remote_state (); | |
6754 | /* Try storing a single register. */ | |
6755 | char *buf = rs->buf; | |
6756 | gdb_byte regp[MAX_REGISTER_SIZE]; | |
6757 | char *p; | |
6758 | ||
25e4902b | 6759 | if (packet_support (PACKET_P) == PACKET_DISABLE) |
5796c8dc SS |
6760 | return 0; |
6761 | ||
6762 | if (reg->pnum == -1) | |
6763 | return 0; | |
6764 | ||
6765 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); | |
6766 | p = buf + strlen (buf); | |
6767 | regcache_raw_collect (regcache, reg->regnum, regp); | |
6768 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); | |
6769 | putpkt (rs->buf); | |
6770 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6771 | ||
6772 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) | |
6773 | { | |
6774 | case PACKET_OK: | |
6775 | return 1; | |
6776 | case PACKET_ERROR: | |
6777 | error (_("Could not write register \"%s\"; remote failure reply '%s'"), | |
6778 | gdbarch_register_name (gdbarch, reg->regnum), rs->buf); | |
6779 | case PACKET_UNKNOWN: | |
6780 | return 0; | |
6781 | default: | |
6782 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
6783 | } | |
6784 | } | |
6785 | ||
6786 | /* Store register REGNUM, or all registers if REGNUM == -1, from the | |
6787 | contents of the register cache buffer. FIXME: ignores errors. */ | |
6788 | ||
6789 | static void | |
6790 | store_registers_using_G (const struct regcache *regcache) | |
6791 | { | |
6792 | struct remote_state *rs = get_remote_state (); | |
6793 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
6794 | gdb_byte *regs; | |
6795 | char *p; | |
6796 | ||
6797 | /* Extract all the registers in the regcache copying them into a | |
6798 | local buffer. */ | |
6799 | { | |
6800 | int i; | |
cf7f2e2d | 6801 | |
5796c8dc SS |
6802 | regs = alloca (rsa->sizeof_g_packet); |
6803 | memset (regs, 0, rsa->sizeof_g_packet); | |
6804 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) | |
6805 | { | |
6806 | struct packet_reg *r = &rsa->regs[i]; | |
cf7f2e2d | 6807 | |
5796c8dc SS |
6808 | if (r->in_g_packet) |
6809 | regcache_raw_collect (regcache, r->regnum, regs + r->offset); | |
6810 | } | |
6811 | } | |
6812 | ||
6813 | /* Command describes registers byte by byte, | |
6814 | each byte encoded as two hex characters. */ | |
6815 | p = rs->buf; | |
6816 | *p++ = 'G'; | |
6817 | /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets | |
6818 | updated. */ | |
6819 | bin2hex (regs, p, rsa->sizeof_g_packet); | |
6820 | putpkt (rs->buf); | |
6821 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6822 | if (packet_check_result (rs->buf) == PACKET_ERROR) | |
6823 | error (_("Could not write registers; remote failure reply '%s'"), | |
6824 | rs->buf); | |
6825 | } | |
6826 | ||
6827 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
6828 | of the register cache buffer. FIXME: ignores errors. */ | |
6829 | ||
6830 | static void | |
6831 | remote_store_registers (struct target_ops *ops, | |
6832 | struct regcache *regcache, int regnum) | |
6833 | { | |
6834 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
6835 | int i; | |
6836 | ||
c50c785c | 6837 | set_remote_traceframe (); |
5796c8dc SS |
6838 | set_general_thread (inferior_ptid); |
6839 | ||
6840 | if (regnum >= 0) | |
6841 | { | |
6842 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
cf7f2e2d | 6843 | |
5796c8dc SS |
6844 | gdb_assert (reg != NULL); |
6845 | ||
6846 | /* Always prefer to store registers using the 'P' packet if | |
6847 | possible; we often change only a small number of registers. | |
6848 | Sometimes we change a larger number; we'd need help from a | |
6849 | higher layer to know to use 'G'. */ | |
6850 | if (store_register_using_P (regcache, reg)) | |
6851 | return; | |
6852 | ||
6853 | /* For now, don't complain if we have no way to write the | |
6854 | register. GDB loses track of unavailable registers too | |
6855 | easily. Some day, this may be an error. We don't have | |
c50c785c | 6856 | any way to read the register, either... */ |
5796c8dc SS |
6857 | if (!reg->in_g_packet) |
6858 | return; | |
6859 | ||
6860 | store_registers_using_G (regcache); | |
6861 | return; | |
6862 | } | |
6863 | ||
6864 | store_registers_using_G (regcache); | |
6865 | ||
6866 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) | |
6867 | if (!rsa->regs[i].in_g_packet) | |
6868 | if (!store_register_using_P (regcache, &rsa->regs[i])) | |
6869 | /* See above for why we do not issue an error here. */ | |
6870 | continue; | |
6871 | } | |
6872 | \f | |
6873 | ||
6874 | /* Return the number of hex digits in num. */ | |
6875 | ||
6876 | static int | |
6877 | hexnumlen (ULONGEST num) | |
6878 | { | |
6879 | int i; | |
6880 | ||
6881 | for (i = 0; num != 0; i++) | |
6882 | num >>= 4; | |
6883 | ||
6884 | return max (i, 1); | |
6885 | } | |
6886 | ||
6887 | /* Set BUF to the minimum number of hex digits representing NUM. */ | |
6888 | ||
6889 | static int | |
6890 | hexnumstr (char *buf, ULONGEST num) | |
6891 | { | |
6892 | int len = hexnumlen (num); | |
cf7f2e2d | 6893 | |
5796c8dc SS |
6894 | return hexnumnstr (buf, num, len); |
6895 | } | |
6896 | ||
6897 | ||
6898 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ | |
6899 | ||
6900 | static int | |
6901 | hexnumnstr (char *buf, ULONGEST num, int width) | |
6902 | { | |
6903 | int i; | |
6904 | ||
6905 | buf[width] = '\0'; | |
6906 | ||
6907 | for (i = width - 1; i >= 0; i--) | |
6908 | { | |
6909 | buf[i] = "0123456789abcdef"[(num & 0xf)]; | |
6910 | num >>= 4; | |
6911 | } | |
6912 | ||
6913 | return width; | |
6914 | } | |
6915 | ||
6916 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ | |
6917 | ||
6918 | static CORE_ADDR | |
6919 | remote_address_masked (CORE_ADDR addr) | |
6920 | { | |
ef5ccd6c | 6921 | unsigned int address_size = remote_address_size; |
cf7f2e2d | 6922 | |
5796c8dc SS |
6923 | /* If "remoteaddresssize" was not set, default to target address size. */ |
6924 | if (!address_size) | |
ef5ccd6c | 6925 | address_size = gdbarch_addr_bit (target_gdbarch ()); |
5796c8dc SS |
6926 | |
6927 | if (address_size > 0 | |
6928 | && address_size < (sizeof (ULONGEST) * 8)) | |
6929 | { | |
6930 | /* Only create a mask when that mask can safely be constructed | |
6931 | in a ULONGEST variable. */ | |
6932 | ULONGEST mask = 1; | |
cf7f2e2d | 6933 | |
5796c8dc SS |
6934 | mask = (mask << address_size) - 1; |
6935 | addr &= mask; | |
6936 | } | |
6937 | return addr; | |
6938 | } | |
6939 | ||
5796c8dc SS |
6940 | /* Determine whether the remote target supports binary downloading. |
6941 | This is accomplished by sending a no-op memory write of zero length | |
6942 | to the target at the specified address. It does not suffice to send | |
6943 | the whole packet, since many stubs strip the eighth bit and | |
6944 | subsequently compute a wrong checksum, which causes real havoc with | |
6945 | remote_write_bytes. | |
6946 | ||
6947 | NOTE: This can still lose if the serial line is not eight-bit | |
c50c785c | 6948 | clean. In cases like this, the user should clear "remote |
5796c8dc SS |
6949 | X-packet". */ |
6950 | ||
6951 | static void | |
6952 | check_binary_download (CORE_ADDR addr) | |
6953 | { | |
6954 | struct remote_state *rs = get_remote_state (); | |
6955 | ||
25e4902b | 6956 | switch (packet_support (PACKET_X)) |
5796c8dc SS |
6957 | { |
6958 | case PACKET_DISABLE: | |
6959 | break; | |
6960 | case PACKET_ENABLE: | |
6961 | break; | |
6962 | case PACKET_SUPPORT_UNKNOWN: | |
6963 | { | |
6964 | char *p; | |
6965 | ||
6966 | p = rs->buf; | |
6967 | *p++ = 'X'; | |
6968 | p += hexnumstr (p, (ULONGEST) addr); | |
6969 | *p++ = ','; | |
6970 | p += hexnumstr (p, (ULONGEST) 0); | |
6971 | *p++ = ':'; | |
6972 | *p = '\0'; | |
6973 | ||
6974 | putpkt_binary (rs->buf, (int) (p - rs->buf)); | |
6975 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6976 | ||
6977 | if (rs->buf[0] == '\0') | |
6978 | { | |
6979 | if (remote_debug) | |
6980 | fprintf_unfiltered (gdb_stdlog, | |
c50c785c JM |
6981 | "binary downloading NOT " |
6982 | "supported by target\n"); | |
5796c8dc SS |
6983 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
6984 | } | |
6985 | else | |
6986 | { | |
6987 | if (remote_debug) | |
6988 | fprintf_unfiltered (gdb_stdlog, | |
a45ae5f8 | 6989 | "binary downloading supported by target\n"); |
5796c8dc SS |
6990 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
6991 | } | |
6992 | break; | |
6993 | } | |
6994 | } | |
6995 | } | |
6996 | ||
25e4902b AHJ |
6997 | /* Helper function to resize the payload in order to try to get a good |
6998 | alignment. We try to write an amount of data such that the next write will | |
6999 | start on an address aligned on REMOTE_ALIGN_WRITES. */ | |
7000 | ||
7001 | static int | |
7002 | align_for_efficient_write (int todo, CORE_ADDR memaddr) | |
7003 | { | |
7004 | return ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
7005 | } | |
7006 | ||
5796c8dc SS |
7007 | /* Write memory data directly to the remote machine. |
7008 | This does not inform the data cache; the data cache uses this. | |
7009 | HEADER is the starting part of the packet. | |
7010 | MEMADDR is the address in the remote memory space. | |
7011 | MYADDR is the address of the buffer in our space. | |
25e4902b AHJ |
7012 | LEN_UNITS is the number of addressable units to write. |
7013 | UNIT_SIZE is the length in bytes of an addressable unit. | |
5796c8dc SS |
7014 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
7015 | should send data as binary ('X'), or hex-encoded ('M'). | |
7016 | ||
7017 | The function creates packet of the form | |
7018 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
7019 | ||
25e4902b | 7020 | where encoding of <DATA> is terminated by PACKET_FORMAT. |
5796c8dc SS |
7021 | |
7022 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
7023 | are omitted. | |
7024 | ||
25e4902b AHJ |
7025 | Return the transferred status, error or OK (an |
7026 | 'enum target_xfer_status' value). Save the number of addressable units | |
7027 | transferred in *XFERED_LEN_UNITS. Only transfer a single packet. | |
5796c8dc | 7028 | |
25e4902b AHJ |
7029 | On a platform with an addressable memory size of 2 bytes (UNIT_SIZE == 2), an |
7030 | exchange between gdb and the stub could look like (?? in place of the | |
7031 | checksum): | |
7032 | ||
7033 | -> $m1000,4#?? | |
7034 | <- aaaabbbbccccdddd | |
7035 | ||
7036 | -> $M1000,3:eeeeffffeeee#?? | |
7037 | <- OK | |
7038 | ||
7039 | -> $m1000,4#?? | |
7040 | <- eeeeffffeeeedddd */ | |
7041 | ||
7042 | static enum target_xfer_status | |
5796c8dc | 7043 | remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, |
25e4902b AHJ |
7044 | const gdb_byte *myaddr, ULONGEST len_units, |
7045 | int unit_size, ULONGEST *xfered_len_units, | |
5796c8dc SS |
7046 | char packet_format, int use_length) |
7047 | { | |
7048 | struct remote_state *rs = get_remote_state (); | |
7049 | char *p; | |
7050 | char *plen = NULL; | |
7051 | int plenlen = 0; | |
25e4902b AHJ |
7052 | int todo_units; |
7053 | int units_written; | |
7054 | int payload_capacity_bytes; | |
7055 | int payload_length_bytes; | |
5796c8dc SS |
7056 | |
7057 | if (packet_format != 'X' && packet_format != 'M') | |
7058 | internal_error (__FILE__, __LINE__, | |
c50c785c | 7059 | _("remote_write_bytes_aux: bad packet format")); |
5796c8dc | 7060 | |
25e4902b AHJ |
7061 | if (len_units == 0) |
7062 | return TARGET_XFER_EOF; | |
5796c8dc | 7063 | |
25e4902b | 7064 | payload_capacity_bytes = get_memory_write_packet_size (); |
5796c8dc SS |
7065 | |
7066 | /* The packet buffer will be large enough for the payload; | |
7067 | get_memory_packet_size ensures this. */ | |
7068 | rs->buf[0] = '\0'; | |
7069 | ||
7070 | /* Compute the size of the actual payload by subtracting out the | |
c50c785c JM |
7071 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ |
7072 | ||
25e4902b | 7073 | payload_capacity_bytes -= strlen ("$,:#NN"); |
5796c8dc | 7074 | if (!use_length) |
c50c785c | 7075 | /* The comma won't be used. */ |
25e4902b AHJ |
7076 | payload_capacity_bytes += 1; |
7077 | payload_capacity_bytes -= strlen (header); | |
7078 | payload_capacity_bytes -= hexnumlen (memaddr); | |
5796c8dc SS |
7079 | |
7080 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ | |
7081 | ||
7082 | strcat (rs->buf, header); | |
7083 | p = rs->buf + strlen (header); | |
7084 | ||
7085 | /* Compute a best guess of the number of bytes actually transfered. */ | |
7086 | if (packet_format == 'X') | |
7087 | { | |
7088 | /* Best guess at number of bytes that will fit. */ | |
25e4902b | 7089 | todo_units = min (len_units, payload_capacity_bytes / unit_size); |
5796c8dc | 7090 | if (use_length) |
25e4902b AHJ |
7091 | payload_capacity_bytes -= hexnumlen (todo_units); |
7092 | todo_units = min (todo_units, payload_capacity_bytes / unit_size); | |
5796c8dc SS |
7093 | } |
7094 | else | |
7095 | { | |
25e4902b AHJ |
7096 | /* Number of bytes that will fit. */ |
7097 | todo_units = min (len_units, (payload_capacity_bytes / unit_size) / 2); | |
5796c8dc | 7098 | if (use_length) |
25e4902b AHJ |
7099 | payload_capacity_bytes -= hexnumlen (todo_units); |
7100 | todo_units = min (todo_units, (payload_capacity_bytes / unit_size) / 2); | |
5796c8dc SS |
7101 | } |
7102 | ||
25e4902b | 7103 | if (todo_units <= 0) |
5796c8dc | 7104 | internal_error (__FILE__, __LINE__, |
a45ae5f8 | 7105 | _("minimum packet size too small to write data")); |
5796c8dc SS |
7106 | |
7107 | /* If we already need another packet, then try to align the end | |
7108 | of this packet to a useful boundary. */ | |
25e4902b AHJ |
7109 | if (todo_units > 2 * REMOTE_ALIGN_WRITES && todo_units < len_units) |
7110 | todo_units = align_for_efficient_write (todo_units, memaddr); | |
5796c8dc SS |
7111 | |
7112 | /* Append "<memaddr>". */ | |
7113 | memaddr = remote_address_masked (memaddr); | |
7114 | p += hexnumstr (p, (ULONGEST) memaddr); | |
7115 | ||
7116 | if (use_length) | |
7117 | { | |
7118 | /* Append ",". */ | |
7119 | *p++ = ','; | |
7120 | ||
25e4902b AHJ |
7121 | /* Append the length and retain its location and size. It may need to be |
7122 | adjusted once the packet body has been created. */ | |
5796c8dc | 7123 | plen = p; |
25e4902b | 7124 | plenlen = hexnumstr (p, (ULONGEST) todo_units); |
5796c8dc SS |
7125 | p += plenlen; |
7126 | } | |
7127 | ||
7128 | /* Append ":". */ | |
7129 | *p++ = ':'; | |
7130 | *p = '\0'; | |
7131 | ||
7132 | /* Append the packet body. */ | |
7133 | if (packet_format == 'X') | |
7134 | { | |
7135 | /* Binary mode. Send target system values byte by byte, in | |
7136 | increasing byte addresses. Only escape certain critical | |
7137 | characters. */ | |
25e4902b AHJ |
7138 | payload_length_bytes = |
7139 | remote_escape_output (myaddr, todo_units, unit_size, (gdb_byte *) p, | |
7140 | &units_written, payload_capacity_bytes); | |
5796c8dc | 7141 | |
25e4902b | 7142 | /* If not all TODO units fit, then we'll need another packet. Make |
5796c8dc SS |
7143 | a second try to keep the end of the packet aligned. Don't do |
7144 | this if the packet is tiny. */ | |
25e4902b | 7145 | if (units_written < todo_units && units_written > 2 * REMOTE_ALIGN_WRITES) |
5796c8dc | 7146 | { |
25e4902b AHJ |
7147 | int new_todo_units; |
7148 | ||
7149 | new_todo_units = align_for_efficient_write (units_written, memaddr); | |
7150 | ||
7151 | if (new_todo_units != units_written) | |
7152 | payload_length_bytes = | |
7153 | remote_escape_output (myaddr, new_todo_units, unit_size, | |
7154 | (gdb_byte *) p, &units_written, | |
7155 | payload_capacity_bytes); | |
5796c8dc SS |
7156 | } |
7157 | ||
25e4902b AHJ |
7158 | p += payload_length_bytes; |
7159 | if (use_length && units_written < todo_units) | |
5796c8dc SS |
7160 | { |
7161 | /* Escape chars have filled up the buffer prematurely, | |
25e4902b | 7162 | and we have actually sent fewer units than planned. |
5796c8dc SS |
7163 | Fix-up the length field of the packet. Use the same |
7164 | number of characters as before. */ | |
25e4902b AHJ |
7165 | plen += hexnumnstr (plen, (ULONGEST) units_written, |
7166 | plenlen); | |
5796c8dc SS |
7167 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ |
7168 | } | |
7169 | } | |
7170 | else | |
7171 | { | |
7172 | /* Normal mode: Send target system values byte by byte, in | |
7173 | increasing byte addresses. Each byte is encoded as a two hex | |
7174 | value. */ | |
25e4902b AHJ |
7175 | p += 2 * bin2hex (myaddr, p, todo_units * unit_size); |
7176 | units_written = todo_units; | |
5796c8dc SS |
7177 | } |
7178 | ||
7179 | putpkt_binary (rs->buf, (int) (p - rs->buf)); | |
7180 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7181 | ||
7182 | if (rs->buf[0] == 'E') | |
25e4902b | 7183 | return TARGET_XFER_E_IO; |
5796c8dc | 7184 | |
25e4902b AHJ |
7185 | /* Return UNITS_WRITTEN, not TODO_UNITS, in case escape chars caused us to |
7186 | send fewer units than we'd planned. */ | |
7187 | *xfered_len_units = (ULONGEST) units_written; | |
7188 | return TARGET_XFER_OK; | |
5796c8dc SS |
7189 | } |
7190 | ||
7191 | /* Write memory data directly to the remote machine. | |
7192 | This does not inform the data cache; the data cache uses this. | |
7193 | MEMADDR is the address in the remote memory space. | |
7194 | MYADDR is the address of the buffer in our space. | |
7195 | LEN is the number of bytes. | |
7196 | ||
25e4902b AHJ |
7197 | Return the transferred status, error or OK (an |
7198 | 'enum target_xfer_status' value). Save the number of bytes | |
7199 | transferred in *XFERED_LEN. Only transfer a single packet. */ | |
5796c8dc | 7200 | |
25e4902b AHJ |
7201 | static enum target_xfer_status |
7202 | remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, ULONGEST len, | |
7203 | int unit_size, ULONGEST *xfered_len) | |
5796c8dc SS |
7204 | { |
7205 | char *packet_format = 0; | |
7206 | ||
7207 | /* Check whether the target supports binary download. */ | |
7208 | check_binary_download (memaddr); | |
7209 | ||
25e4902b | 7210 | switch (packet_support (PACKET_X)) |
5796c8dc SS |
7211 | { |
7212 | case PACKET_ENABLE: | |
7213 | packet_format = "X"; | |
7214 | break; | |
7215 | case PACKET_DISABLE: | |
7216 | packet_format = "M"; | |
7217 | break; | |
7218 | case PACKET_SUPPORT_UNKNOWN: | |
7219 | internal_error (__FILE__, __LINE__, | |
7220 | _("remote_write_bytes: bad internal state")); | |
7221 | default: | |
7222 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
7223 | } | |
7224 | ||
7225 | return remote_write_bytes_aux (packet_format, | |
25e4902b AHJ |
7226 | memaddr, myaddr, len, unit_size, xfered_len, |
7227 | packet_format[0], 1); | |
5796c8dc SS |
7228 | } |
7229 | ||
7230 | /* Read memory data directly from the remote machine. | |
7231 | This does not use the data cache; the data cache uses this. | |
7232 | MEMADDR is the address in the remote memory space. | |
7233 | MYADDR is the address of the buffer in our space. | |
25e4902b AHJ |
7234 | LEN_UNITS is the number of addressable memory units to read.. |
7235 | UNIT_SIZE is the length in bytes of an addressable unit. | |
5796c8dc | 7236 | |
25e4902b AHJ |
7237 | Return the transferred status, error or OK (an |
7238 | 'enum target_xfer_status' value). Save the number of bytes | |
7239 | transferred in *XFERED_LEN_UNITS. | |
5796c8dc | 7240 | |
25e4902b AHJ |
7241 | See the comment of remote_write_bytes_aux for an example of |
7242 | memory read/write exchange between gdb and the stub. */ | |
7243 | ||
7244 | static enum target_xfer_status | |
7245 | remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, ULONGEST len_units, | |
7246 | int unit_size, ULONGEST *xfered_len_units) | |
5796c8dc SS |
7247 | { |
7248 | struct remote_state *rs = get_remote_state (); | |
25e4902b | 7249 | int buf_size_bytes; /* Max size of packet output buffer. */ |
c50c785c | 7250 | char *p; |
25e4902b AHJ |
7251 | int todo_units; |
7252 | int decoded_bytes; | |
5796c8dc | 7253 | |
25e4902b | 7254 | buf_size_bytes = get_memory_read_packet_size (); |
5796c8dc SS |
7255 | /* The packet buffer will be large enough for the payload; |
7256 | get_memory_packet_size ensures this. */ | |
7257 | ||
25e4902b AHJ |
7258 | /* Number of units that will fit. */ |
7259 | todo_units = min (len_units, (buf_size_bytes / unit_size) / 2); | |
5796c8dc | 7260 | |
c50c785c JM |
7261 | /* Construct "m"<memaddr>","<len>". */ |
7262 | memaddr = remote_address_masked (memaddr); | |
7263 | p = rs->buf; | |
7264 | *p++ = 'm'; | |
7265 | p += hexnumstr (p, (ULONGEST) memaddr); | |
7266 | *p++ = ','; | |
25e4902b | 7267 | p += hexnumstr (p, (ULONGEST) todo_units); |
c50c785c JM |
7268 | *p = '\0'; |
7269 | putpkt (rs->buf); | |
7270 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7271 | if (rs->buf[0] == 'E' | |
7272 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
7273 | && rs->buf[3] == '\0') | |
25e4902b | 7274 | return TARGET_XFER_E_IO; |
c50c785c JM |
7275 | /* Reply describes memory byte by byte, each byte encoded as two hex |
7276 | characters. */ | |
7277 | p = rs->buf; | |
25e4902b | 7278 | decoded_bytes = hex2bin (p, myaddr, todo_units * unit_size); |
c50c785c | 7279 | /* Return what we have. Let higher layers handle partial reads. */ |
25e4902b AHJ |
7280 | *xfered_len_units = (ULONGEST) (decoded_bytes / unit_size); |
7281 | return TARGET_XFER_OK; | |
5796c8dc | 7282 | } |
5796c8dc | 7283 | |
25e4902b AHJ |
7284 | /* Using the set of read-only target sections of remote, read live |
7285 | read-only memory. | |
5796c8dc | 7286 | |
25e4902b AHJ |
7287 | For interface/parameters/return description see target.h, |
7288 | to_xfer_partial. */ | |
7289 | ||
7290 | static enum target_xfer_status | |
7291 | remote_xfer_live_readonly_partial (struct target_ops *ops, gdb_byte *readbuf, | |
7292 | ULONGEST memaddr, ULONGEST len, | |
7293 | int unit_size, ULONGEST *xfered_len) | |
5796c8dc | 7294 | { |
25e4902b AHJ |
7295 | struct target_section *secp; |
7296 | struct target_section_table *table; | |
5796c8dc | 7297 | |
25e4902b AHJ |
7298 | secp = target_section_by_addr (ops, memaddr); |
7299 | if (secp != NULL | |
7300 | && (bfd_get_section_flags (secp->the_bfd_section->owner, | |
7301 | secp->the_bfd_section) | |
7302 | & SEC_READONLY)) | |
7303 | { | |
7304 | struct target_section *p; | |
7305 | ULONGEST memend = memaddr + len; | |
5796c8dc | 7306 | |
25e4902b AHJ |
7307 | table = target_get_section_table (ops); |
7308 | ||
7309 | for (p = table->sections; p < table->sections_end; p++) | |
7310 | { | |
7311 | if (memaddr >= p->addr) | |
7312 | { | |
7313 | if (memend <= p->endaddr) | |
7314 | { | |
7315 | /* Entire transfer is within this section. */ | |
7316 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, | |
7317 | xfered_len); | |
7318 | } | |
7319 | else if (memaddr >= p->endaddr) | |
7320 | { | |
7321 | /* This section ends before the transfer starts. */ | |
7322 | continue; | |
7323 | } | |
7324 | else | |
7325 | { | |
7326 | /* This section overlaps the transfer. Just do half. */ | |
7327 | len = p->endaddr - memaddr; | |
7328 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, | |
7329 | xfered_len); | |
7330 | } | |
7331 | } | |
7332 | } | |
7333 | } | |
7334 | ||
7335 | return TARGET_XFER_EOF; | |
7336 | } | |
7337 | ||
7338 | /* Similar to remote_read_bytes_1, but it reads from the remote stub | |
7339 | first if the requested memory is unavailable in traceframe. | |
7340 | Otherwise, fall back to remote_read_bytes_1. */ | |
7341 | ||
7342 | static enum target_xfer_status | |
7343 | remote_read_bytes (struct target_ops *ops, CORE_ADDR memaddr, | |
7344 | gdb_byte *myaddr, ULONGEST len, int unit_size, | |
7345 | ULONGEST *xfered_len) | |
7346 | { | |
7347 | if (len == 0) | |
7348 | return TARGET_XFER_EOF; | |
5796c8dc | 7349 | |
25e4902b AHJ |
7350 | if (get_traceframe_number () != -1) |
7351 | { | |
7352 | VEC(mem_range_s) *available; | |
7353 | ||
7354 | /* If we fail to get the set of available memory, then the | |
7355 | target does not support querying traceframe info, and so we | |
7356 | attempt reading from the traceframe anyway (assuming the | |
7357 | target implements the old QTro packet then). */ | |
7358 | if (traceframe_available_memory (&available, memaddr, len)) | |
7359 | { | |
7360 | struct cleanup *old_chain; | |
7361 | ||
7362 | old_chain = make_cleanup (VEC_cleanup(mem_range_s), &available); | |
7363 | ||
7364 | if (VEC_empty (mem_range_s, available) | |
7365 | || VEC_index (mem_range_s, available, 0)->start != memaddr) | |
7366 | { | |
7367 | enum target_xfer_status res; | |
7368 | ||
7369 | /* Don't read into the traceframe's available | |
7370 | memory. */ | |
7371 | if (!VEC_empty (mem_range_s, available)) | |
7372 | { | |
7373 | LONGEST oldlen = len; | |
7374 | ||
7375 | len = VEC_index (mem_range_s, available, 0)->start - memaddr; | |
7376 | gdb_assert (len <= oldlen); | |
7377 | } | |
7378 | ||
7379 | do_cleanups (old_chain); | |
7380 | ||
7381 | /* This goes through the topmost target again. */ | |
7382 | res = remote_xfer_live_readonly_partial (ops, myaddr, memaddr, | |
7383 | len, unit_size, xfered_len); | |
7384 | if (res == TARGET_XFER_OK) | |
7385 | return TARGET_XFER_OK; | |
7386 | else | |
7387 | { | |
7388 | /* No use trying further, we know some memory starting | |
7389 | at MEMADDR isn't available. */ | |
7390 | *xfered_len = len; | |
7391 | return TARGET_XFER_UNAVAILABLE; | |
7392 | } | |
7393 | } | |
7394 | ||
7395 | /* Don't try to read more than how much is available, in | |
7396 | case the target implements the deprecated QTro packet to | |
7397 | cater for older GDBs (the target's knowledge of read-only | |
7398 | sections may be outdated by now). */ | |
7399 | len = VEC_index (mem_range_s, available, 0)->length; | |
7400 | ||
7401 | do_cleanups (old_chain); | |
7402 | } | |
7403 | } | |
7404 | ||
7405 | return remote_read_bytes_1 (memaddr, myaddr, len, unit_size, xfered_len); | |
5796c8dc SS |
7406 | } |
7407 | ||
25e4902b AHJ |
7408 | \f |
7409 | ||
5796c8dc SS |
7410 | /* Sends a packet with content determined by the printf format string |
7411 | FORMAT and the remaining arguments, then gets the reply. Returns | |
7412 | whether the packet was a success, a failure, or unknown. */ | |
7413 | ||
25e4902b AHJ |
7414 | static enum packet_result remote_send_printf (const char *format, ...) |
7415 | ATTRIBUTE_PRINTF (1, 2); | |
7416 | ||
5796c8dc SS |
7417 | static enum packet_result |
7418 | remote_send_printf (const char *format, ...) | |
7419 | { | |
7420 | struct remote_state *rs = get_remote_state (); | |
7421 | int max_size = get_remote_packet_size (); | |
5796c8dc | 7422 | va_list ap; |
cf7f2e2d | 7423 | |
5796c8dc SS |
7424 | va_start (ap, format); |
7425 | ||
7426 | rs->buf[0] = '\0'; | |
7427 | if (vsnprintf (rs->buf, max_size, format, ap) >= max_size) | |
c50c785c | 7428 | internal_error (__FILE__, __LINE__, _("Too long remote packet.")); |
5796c8dc SS |
7429 | |
7430 | if (putpkt (rs->buf) < 0) | |
7431 | error (_("Communication problem with target.")); | |
7432 | ||
7433 | rs->buf[0] = '\0'; | |
7434 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7435 | ||
7436 | return packet_check_result (rs->buf); | |
7437 | } | |
7438 | ||
7439 | static void | |
7440 | restore_remote_timeout (void *p) | |
7441 | { | |
7442 | int value = *(int *)p; | |
cf7f2e2d | 7443 | |
5796c8dc SS |
7444 | remote_timeout = value; |
7445 | } | |
7446 | ||
7447 | /* Flash writing can take quite some time. We'll set | |
7448 | effectively infinite timeout for flash operations. | |
7449 | In future, we'll need to decide on a better approach. */ | |
7450 | static const int remote_flash_timeout = 1000; | |
7451 | ||
7452 | static void | |
7453 | remote_flash_erase (struct target_ops *ops, | |
7454 | ULONGEST address, LONGEST length) | |
7455 | { | |
ef5ccd6c | 7456 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
5796c8dc SS |
7457 | int saved_remote_timeout = remote_timeout; |
7458 | enum packet_result ret; | |
5796c8dc SS |
7459 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, |
7460 | &saved_remote_timeout); | |
cf7f2e2d | 7461 | |
5796c8dc SS |
7462 | remote_timeout = remote_flash_timeout; |
7463 | ||
7464 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
7465 | phex (address, addr_size), | |
7466 | phex (length, 4)); | |
7467 | switch (ret) | |
7468 | { | |
7469 | case PACKET_UNKNOWN: | |
7470 | error (_("Remote target does not support flash erase")); | |
7471 | case PACKET_ERROR: | |
7472 | error (_("Error erasing flash with vFlashErase packet")); | |
7473 | default: | |
7474 | break; | |
7475 | } | |
7476 | ||
7477 | do_cleanups (back_to); | |
7478 | } | |
7479 | ||
25e4902b AHJ |
7480 | static enum target_xfer_status |
7481 | remote_flash_write (struct target_ops *ops, ULONGEST address, | |
7482 | ULONGEST length, ULONGEST *xfered_len, | |
7483 | const gdb_byte *data) | |
5796c8dc SS |
7484 | { |
7485 | int saved_remote_timeout = remote_timeout; | |
25e4902b | 7486 | enum target_xfer_status ret; |
5796c8dc | 7487 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, |
25e4902b | 7488 | &saved_remote_timeout); |
5796c8dc SS |
7489 | |
7490 | remote_timeout = remote_flash_timeout; | |
25e4902b AHJ |
7491 | ret = remote_write_bytes_aux ("vFlashWrite:", address, data, length, 1, |
7492 | xfered_len,'X', 0); | |
5796c8dc SS |
7493 | do_cleanups (back_to); |
7494 | ||
7495 | return ret; | |
7496 | } | |
7497 | ||
7498 | static void | |
7499 | remote_flash_done (struct target_ops *ops) | |
7500 | { | |
7501 | int saved_remote_timeout = remote_timeout; | |
7502 | int ret; | |
7503 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
7504 | &saved_remote_timeout); | |
7505 | ||
7506 | remote_timeout = remote_flash_timeout; | |
7507 | ret = remote_send_printf ("vFlashDone"); | |
7508 | do_cleanups (back_to); | |
7509 | ||
7510 | switch (ret) | |
7511 | { | |
7512 | case PACKET_UNKNOWN: | |
7513 | error (_("Remote target does not support vFlashDone")); | |
7514 | case PACKET_ERROR: | |
7515 | error (_("Error finishing flash operation")); | |
7516 | default: | |
7517 | break; | |
7518 | } | |
7519 | } | |
7520 | ||
7521 | static void | |
7522 | remote_files_info (struct target_ops *ignore) | |
7523 | { | |
7524 | puts_filtered ("Debugging a target over a serial line.\n"); | |
7525 | } | |
7526 | \f | |
7527 | /* Stuff for dealing with the packets which are part of this protocol. | |
7528 | See comment at top of file for details. */ | |
7529 | ||
25e4902b AHJ |
7530 | /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR |
7531 | error to higher layers. Called when a serial error is detected. | |
7532 | The exception message is STRING, followed by a colon and a blank, | |
7533 | the system error message for errno at function entry and final dot | |
7534 | for output compatibility with throw_perror_with_name. */ | |
7535 | ||
7536 | static void | |
7537 | unpush_and_perror (const char *string) | |
7538 | { | |
7539 | int saved_errno = errno; | |
7540 | ||
7541 | remote_unpush_target (); | |
7542 | throw_error (TARGET_CLOSE_ERROR, "%s: %s.", string, | |
7543 | safe_strerror (saved_errno)); | |
7544 | } | |
7545 | ||
5796c8dc SS |
7546 | /* Read a single character from the remote end. */ |
7547 | ||
7548 | static int | |
7549 | readchar (int timeout) | |
7550 | { | |
7551 | int ch; | |
25e4902b | 7552 | struct remote_state *rs = get_remote_state (); |
5796c8dc | 7553 | |
25e4902b | 7554 | ch = serial_readchar (rs->remote_desc, timeout); |
5796c8dc SS |
7555 | |
7556 | if (ch >= 0) | |
7557 | return ch; | |
7558 | ||
7559 | switch ((enum serial_rc) ch) | |
7560 | { | |
7561 | case SERIAL_EOF: | |
ef5ccd6c JM |
7562 | remote_unpush_target (); |
7563 | throw_error (TARGET_CLOSE_ERROR, _("Remote connection closed")); | |
5796c8dc SS |
7564 | /* no return */ |
7565 | case SERIAL_ERROR: | |
25e4902b AHJ |
7566 | unpush_and_perror (_("Remote communication error. " |
7567 | "Target disconnected.")); | |
5796c8dc SS |
7568 | /* no return */ |
7569 | case SERIAL_TIMEOUT: | |
7570 | break; | |
7571 | } | |
7572 | return ch; | |
7573 | } | |
7574 | ||
ef5ccd6c JM |
7575 | /* Wrapper for serial_write that closes the target and throws if |
7576 | writing fails. */ | |
7577 | ||
7578 | static void | |
7579 | remote_serial_write (const char *str, int len) | |
7580 | { | |
25e4902b AHJ |
7581 | struct remote_state *rs = get_remote_state (); |
7582 | ||
7583 | if (serial_write (rs->remote_desc, str, len)) | |
ef5ccd6c | 7584 | { |
25e4902b AHJ |
7585 | unpush_and_perror (_("Remote communication error. " |
7586 | "Target disconnected.")); | |
ef5ccd6c JM |
7587 | } |
7588 | } | |
7589 | ||
5796c8dc SS |
7590 | /* Send the command in *BUF to the remote machine, and read the reply |
7591 | into *BUF. Report an error if we get an error reply. Resize | |
7592 | *BUF using xrealloc if necessary to hold the result, and update | |
7593 | *SIZEOF_BUF. */ | |
7594 | ||
7595 | static void | |
7596 | remote_send (char **buf, | |
7597 | long *sizeof_buf) | |
7598 | { | |
7599 | putpkt (*buf); | |
7600 | getpkt (buf, sizeof_buf, 0); | |
7601 | ||
7602 | if ((*buf)[0] == 'E') | |
7603 | error (_("Remote failure reply: %s"), *buf); | |
7604 | } | |
7605 | ||
7606 | /* Return a pointer to an xmalloc'ed string representing an escaped | |
7607 | version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t, | |
7608 | etc. The caller is responsible for releasing the returned | |
7609 | memory. */ | |
7610 | ||
7611 | static char * | |
7612 | escape_buffer (const char *buf, int n) | |
7613 | { | |
7614 | struct cleanup *old_chain; | |
7615 | struct ui_file *stb; | |
7616 | char *str; | |
7617 | ||
7618 | stb = mem_fileopen (); | |
7619 | old_chain = make_cleanup_ui_file_delete (stb); | |
7620 | ||
25e4902b | 7621 | fputstrn_unfiltered (buf, n, '\\', stb); |
5796c8dc SS |
7622 | str = ui_file_xstrdup (stb, NULL); |
7623 | do_cleanups (old_chain); | |
7624 | return str; | |
7625 | } | |
7626 | ||
7627 | /* Display a null-terminated packet on stdout, for debugging, using C | |
7628 | string notation. */ | |
7629 | ||
7630 | static void | |
25e4902b | 7631 | print_packet (const char *buf) |
5796c8dc SS |
7632 | { |
7633 | puts_filtered ("\""); | |
7634 | fputstr_filtered (buf, '"', gdb_stdout); | |
7635 | puts_filtered ("\""); | |
7636 | } | |
7637 | ||
7638 | int | |
25e4902b | 7639 | putpkt (const char *buf) |
5796c8dc SS |
7640 | { |
7641 | return putpkt_binary (buf, strlen (buf)); | |
7642 | } | |
7643 | ||
7644 | /* Send a packet to the remote machine, with error checking. The data | |
7645 | of the packet is in BUF. The string in BUF can be at most | |
7646 | get_remote_packet_size () - 5 to account for the $, # and checksum, | |
7647 | and for a possible /0 if we are debugging (remote_debug) and want | |
7648 | to print the sent packet as a string. */ | |
7649 | ||
7650 | static int | |
25e4902b | 7651 | putpkt_binary (const char *buf, int cnt) |
5796c8dc SS |
7652 | { |
7653 | struct remote_state *rs = get_remote_state (); | |
7654 | int i; | |
7655 | unsigned char csum = 0; | |
7656 | char *buf2 = alloca (cnt + 6); | |
7657 | ||
7658 | int ch; | |
7659 | int tcount = 0; | |
7660 | char *p; | |
ef5ccd6c | 7661 | char *message; |
5796c8dc SS |
7662 | |
7663 | /* Catch cases like trying to read memory or listing threads while | |
7664 | we're waiting for a stop reply. The remote server wouldn't be | |
7665 | ready to handle this request, so we'd hang and timeout. We don't | |
7666 | have to worry about this in synchronous mode, because in that | |
7667 | case it's not possible to issue a command while the target is | |
7668 | running. This is not a problem in non-stop mode, because in that | |
7669 | case, the stub is always ready to process serial input. */ | |
25e4902b AHJ |
7670 | if (!non_stop && target_is_async_p () && rs->waiting_for_stop_reply) |
7671 | { | |
7672 | error (_("Cannot execute this command while the target is running.\n" | |
7673 | "Use the \"interrupt\" command to stop the target\n" | |
7674 | "and then try again.")); | |
7675 | } | |
5796c8dc SS |
7676 | |
7677 | /* We're sending out a new packet. Make sure we don't look at a | |
7678 | stale cached response. */ | |
7679 | rs->cached_wait_status = 0; | |
7680 | ||
7681 | /* Copy the packet into buffer BUF2, encapsulating it | |
7682 | and giving it a checksum. */ | |
7683 | ||
7684 | p = buf2; | |
7685 | *p++ = '$'; | |
7686 | ||
7687 | for (i = 0; i < cnt; i++) | |
7688 | { | |
7689 | csum += buf[i]; | |
7690 | *p++ = buf[i]; | |
7691 | } | |
7692 | *p++ = '#'; | |
7693 | *p++ = tohex ((csum >> 4) & 0xf); | |
7694 | *p++ = tohex (csum & 0xf); | |
7695 | ||
7696 | /* Send it over and over until we get a positive ack. */ | |
7697 | ||
7698 | while (1) | |
7699 | { | |
7700 | int started_error_output = 0; | |
7701 | ||
7702 | if (remote_debug) | |
7703 | { | |
7704 | struct cleanup *old_chain; | |
7705 | char *str; | |
7706 | ||
7707 | *p = '\0'; | |
7708 | str = escape_buffer (buf2, p - buf2); | |
7709 | old_chain = make_cleanup (xfree, str); | |
7710 | fprintf_unfiltered (gdb_stdlog, "Sending packet: %s...", str); | |
7711 | gdb_flush (gdb_stdlog); | |
7712 | do_cleanups (old_chain); | |
7713 | } | |
ef5ccd6c | 7714 | remote_serial_write (buf2, p - buf2); |
5796c8dc SS |
7715 | |
7716 | /* If this is a no acks version of the remote protocol, send the | |
7717 | packet and move on. */ | |
7718 | if (rs->noack_mode) | |
7719 | break; | |
7720 | ||
7721 | /* Read until either a timeout occurs (-2) or '+' is read. | |
7722 | Handle any notification that arrives in the mean time. */ | |
7723 | while (1) | |
7724 | { | |
7725 | ch = readchar (remote_timeout); | |
7726 | ||
7727 | if (remote_debug) | |
7728 | { | |
7729 | switch (ch) | |
7730 | { | |
7731 | case '+': | |
7732 | case '-': | |
7733 | case SERIAL_TIMEOUT: | |
7734 | case '$': | |
7735 | case '%': | |
7736 | if (started_error_output) | |
7737 | { | |
7738 | putchar_unfiltered ('\n'); | |
7739 | started_error_output = 0; | |
7740 | } | |
7741 | } | |
7742 | } | |
7743 | ||
7744 | switch (ch) | |
7745 | { | |
7746 | case '+': | |
7747 | if (remote_debug) | |
7748 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); | |
7749 | return 1; | |
7750 | case '-': | |
7751 | if (remote_debug) | |
7752 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
c50c785c | 7753 | /* FALLTHROUGH */ |
5796c8dc SS |
7754 | case SERIAL_TIMEOUT: |
7755 | tcount++; | |
7756 | if (tcount > 3) | |
7757 | return 0; | |
7758 | break; /* Retransmit buffer. */ | |
7759 | case '$': | |
7760 | { | |
7761 | if (remote_debug) | |
7762 | fprintf_unfiltered (gdb_stdlog, | |
7763 | "Packet instead of Ack, ignoring it\n"); | |
7764 | /* It's probably an old response sent because an ACK | |
7765 | was lost. Gobble up the packet and ack it so it | |
7766 | doesn't get retransmitted when we resend this | |
7767 | packet. */ | |
7768 | skip_frame (); | |
ef5ccd6c | 7769 | remote_serial_write ("+", 1); |
5796c8dc SS |
7770 | continue; /* Now, go look for +. */ |
7771 | } | |
7772 | ||
7773 | case '%': | |
7774 | { | |
7775 | int val; | |
7776 | ||
7777 | /* If we got a notification, handle it, and go back to looking | |
7778 | for an ack. */ | |
7779 | /* We've found the start of a notification. Now | |
7780 | collect the data. */ | |
7781 | val = read_frame (&rs->buf, &rs->buf_size); | |
7782 | if (val >= 0) | |
7783 | { | |
7784 | if (remote_debug) | |
7785 | { | |
7786 | struct cleanup *old_chain; | |
7787 | char *str; | |
7788 | ||
7789 | str = escape_buffer (rs->buf, val); | |
7790 | old_chain = make_cleanup (xfree, str); | |
7791 | fprintf_unfiltered (gdb_stdlog, | |
7792 | " Notification received: %s\n", | |
7793 | str); | |
7794 | do_cleanups (old_chain); | |
7795 | } | |
25e4902b | 7796 | handle_notification (rs->notif_state, rs->buf); |
5796c8dc SS |
7797 | /* We're in sync now, rewait for the ack. */ |
7798 | tcount = 0; | |
7799 | } | |
7800 | else | |
7801 | { | |
7802 | if (remote_debug) | |
7803 | { | |
7804 | if (!started_error_output) | |
7805 | { | |
7806 | started_error_output = 1; | |
7807 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); | |
7808 | } | |
7809 | fputc_unfiltered (ch & 0177, gdb_stdlog); | |
7810 | fprintf_unfiltered (gdb_stdlog, "%s", rs->buf); | |
7811 | } | |
7812 | } | |
7813 | continue; | |
7814 | } | |
7815 | /* fall-through */ | |
7816 | default: | |
7817 | if (remote_debug) | |
7818 | { | |
7819 | if (!started_error_output) | |
7820 | { | |
7821 | started_error_output = 1; | |
7822 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); | |
7823 | } | |
7824 | fputc_unfiltered (ch & 0177, gdb_stdlog); | |
7825 | } | |
7826 | continue; | |
7827 | } | |
7828 | break; /* Here to retransmit. */ | |
7829 | } | |
7830 | ||
7831 | #if 0 | |
7832 | /* This is wrong. If doing a long backtrace, the user should be | |
7833 | able to get out next time we call QUIT, without anything as | |
7834 | violent as interrupt_query. If we want to provide a way out of | |
7835 | here without getting to the next QUIT, it should be based on | |
7836 | hitting ^C twice as in remote_wait. */ | |
7837 | if (quit_flag) | |
7838 | { | |
7839 | quit_flag = 0; | |
7840 | interrupt_query (); | |
7841 | } | |
7842 | #endif | |
7843 | } | |
7844 | return 0; | |
7845 | } | |
7846 | ||
7847 | /* Come here after finding the start of a frame when we expected an | |
7848 | ack. Do our best to discard the rest of this packet. */ | |
7849 | ||
7850 | static void | |
7851 | skip_frame (void) | |
7852 | { | |
7853 | int c; | |
7854 | ||
7855 | while (1) | |
7856 | { | |
7857 | c = readchar (remote_timeout); | |
7858 | switch (c) | |
7859 | { | |
7860 | case SERIAL_TIMEOUT: | |
7861 | /* Nothing we can do. */ | |
7862 | return; | |
7863 | case '#': | |
7864 | /* Discard the two bytes of checksum and stop. */ | |
7865 | c = readchar (remote_timeout); | |
7866 | if (c >= 0) | |
7867 | c = readchar (remote_timeout); | |
7868 | ||
7869 | return; | |
7870 | case '*': /* Run length encoding. */ | |
7871 | /* Discard the repeat count. */ | |
7872 | c = readchar (remote_timeout); | |
7873 | if (c < 0) | |
7874 | return; | |
7875 | break; | |
7876 | default: | |
7877 | /* A regular character. */ | |
7878 | break; | |
7879 | } | |
7880 | } | |
7881 | } | |
7882 | ||
7883 | /* Come here after finding the start of the frame. Collect the rest | |
7884 | into *BUF, verifying the checksum, length, and handling run-length | |
7885 | compression. NUL terminate the buffer. If there is not enough room, | |
7886 | expand *BUF using xrealloc. | |
7887 | ||
7888 | Returns -1 on error, number of characters in buffer (ignoring the | |
7889 | trailing NULL) on success. (could be extended to return one of the | |
7890 | SERIAL status indications). */ | |
7891 | ||
7892 | static long | |
7893 | read_frame (char **buf_p, | |
7894 | long *sizeof_buf) | |
7895 | { | |
7896 | unsigned char csum; | |
7897 | long bc; | |
7898 | int c; | |
7899 | char *buf = *buf_p; | |
7900 | struct remote_state *rs = get_remote_state (); | |
7901 | ||
7902 | csum = 0; | |
7903 | bc = 0; | |
7904 | ||
7905 | while (1) | |
7906 | { | |
7907 | c = readchar (remote_timeout); | |
7908 | switch (c) | |
7909 | { | |
7910 | case SERIAL_TIMEOUT: | |
7911 | if (remote_debug) | |
7912 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); | |
7913 | return -1; | |
7914 | case '$': | |
7915 | if (remote_debug) | |
7916 | fputs_filtered ("Saw new packet start in middle of old one\n", | |
7917 | gdb_stdlog); | |
7918 | return -1; /* Start a new packet, count retries. */ | |
7919 | case '#': | |
7920 | { | |
7921 | unsigned char pktcsum; | |
7922 | int check_0 = 0; | |
7923 | int check_1 = 0; | |
7924 | ||
7925 | buf[bc] = '\0'; | |
7926 | ||
7927 | check_0 = readchar (remote_timeout); | |
7928 | if (check_0 >= 0) | |
7929 | check_1 = readchar (remote_timeout); | |
7930 | ||
7931 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) | |
7932 | { | |
7933 | if (remote_debug) | |
7934 | fputs_filtered ("Timeout in checksum, retrying\n", | |
7935 | gdb_stdlog); | |
7936 | return -1; | |
7937 | } | |
7938 | else if (check_0 < 0 || check_1 < 0) | |
7939 | { | |
7940 | if (remote_debug) | |
7941 | fputs_filtered ("Communication error in checksum\n", | |
7942 | gdb_stdlog); | |
7943 | return -1; | |
7944 | } | |
7945 | ||
7946 | /* Don't recompute the checksum; with no ack packets we | |
7947 | don't have any way to indicate a packet retransmission | |
7948 | is necessary. */ | |
7949 | if (rs->noack_mode) | |
7950 | return bc; | |
7951 | ||
7952 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); | |
7953 | if (csum == pktcsum) | |
7954 | return bc; | |
7955 | ||
7956 | if (remote_debug) | |
7957 | { | |
7958 | struct cleanup *old_chain; | |
7959 | char *str; | |
7960 | ||
7961 | str = escape_buffer (buf, bc); | |
7962 | old_chain = make_cleanup (xfree, str); | |
7963 | fprintf_unfiltered (gdb_stdlog, | |
c50c785c JM |
7964 | "Bad checksum, sentsum=0x%x, " |
7965 | "csum=0x%x, buf=%s\n", | |
5796c8dc SS |
7966 | pktcsum, csum, str); |
7967 | do_cleanups (old_chain); | |
7968 | } | |
7969 | /* Number of characters in buffer ignoring trailing | |
7970 | NULL. */ | |
7971 | return -1; | |
7972 | } | |
7973 | case '*': /* Run length encoding. */ | |
7974 | { | |
7975 | int repeat; | |
5796c8dc | 7976 | |
cf7f2e2d | 7977 | csum += c; |
5796c8dc SS |
7978 | c = readchar (remote_timeout); |
7979 | csum += c; | |
7980 | repeat = c - ' ' + 3; /* Compute repeat count. */ | |
7981 | ||
7982 | /* The character before ``*'' is repeated. */ | |
7983 | ||
7984 | if (repeat > 0 && repeat <= 255 && bc > 0) | |
7985 | { | |
7986 | if (bc + repeat - 1 >= *sizeof_buf - 1) | |
7987 | { | |
7988 | /* Make some more room in the buffer. */ | |
7989 | *sizeof_buf += repeat; | |
7990 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
7991 | buf = *buf_p; | |
7992 | } | |
7993 | ||
7994 | memset (&buf[bc], buf[bc - 1], repeat); | |
7995 | bc += repeat; | |
7996 | continue; | |
7997 | } | |
7998 | ||
7999 | buf[bc] = '\0'; | |
8000 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); | |
8001 | return -1; | |
8002 | } | |
8003 | default: | |
8004 | if (bc >= *sizeof_buf - 1) | |
8005 | { | |
8006 | /* Make some more room in the buffer. */ | |
8007 | *sizeof_buf *= 2; | |
8008 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
8009 | buf = *buf_p; | |
8010 | } | |
8011 | ||
8012 | buf[bc++] = c; | |
8013 | csum += c; | |
8014 | continue; | |
8015 | } | |
8016 | } | |
8017 | } | |
8018 | ||
8019 | /* Read a packet from the remote machine, with error checking, and | |
8020 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold | |
8021 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
8022 | rather than timing out; this is used (in synchronous mode) to wait | |
8023 | for a target that is is executing user code to stop. */ | |
8024 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we | |
8025 | don't have to change all the calls to getpkt to deal with the | |
8026 | return value, because at the moment I don't know what the right | |
8027 | thing to do it for those. */ | |
8028 | void | |
8029 | getpkt (char **buf, | |
8030 | long *sizeof_buf, | |
8031 | int forever) | |
8032 | { | |
8033 | int timed_out; | |
8034 | ||
8035 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
8036 | } | |
8037 | ||
8038 | ||
8039 | /* Read a packet from the remote machine, with error checking, and | |
8040 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold | |
8041 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
8042 | rather than timing out; this is used (in synchronous mode) to wait | |
8043 | for a target that is is executing user code to stop. If FOREVER == | |
8044 | 0, this function is allowed to time out gracefully and return an | |
8045 | indication of this to the caller. Otherwise return the number of | |
8046 | bytes read. If EXPECTING_NOTIF, consider receiving a notification | |
ef5ccd6c JM |
8047 | enough reason to return to the caller. *IS_NOTIF is an output |
8048 | boolean that indicates whether *BUF holds a notification or not | |
8049 | (a regular packet). */ | |
5796c8dc SS |
8050 | |
8051 | static int | |
8052 | getpkt_or_notif_sane_1 (char **buf, long *sizeof_buf, int forever, | |
ef5ccd6c | 8053 | int expecting_notif, int *is_notif) |
5796c8dc SS |
8054 | { |
8055 | struct remote_state *rs = get_remote_state (); | |
8056 | int c; | |
8057 | int tries; | |
8058 | int timeout; | |
8059 | int val = -1; | |
8060 | ||
8061 | /* We're reading a new response. Make sure we don't look at a | |
8062 | previously cached response. */ | |
8063 | rs->cached_wait_status = 0; | |
8064 | ||
8065 | strcpy (*buf, "timeout"); | |
8066 | ||
8067 | if (forever) | |
8068 | timeout = watchdog > 0 ? watchdog : -1; | |
8069 | else if (expecting_notif) | |
8070 | timeout = 0; /* There should already be a char in the buffer. If | |
8071 | not, bail out. */ | |
8072 | else | |
8073 | timeout = remote_timeout; | |
8074 | ||
8075 | #define MAX_TRIES 3 | |
8076 | ||
8077 | /* Process any number of notifications, and then return when | |
8078 | we get a packet. */ | |
8079 | for (;;) | |
8080 | { | |
25e4902b | 8081 | /* If we get a timeout or bad checksum, retry up to MAX_TRIES |
5796c8dc SS |
8082 | times. */ |
8083 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
8084 | { | |
8085 | /* This can loop forever if the remote side sends us | |
8086 | characters continuously, but if it pauses, we'll get | |
8087 | SERIAL_TIMEOUT from readchar because of timeout. Then | |
8088 | we'll count that as a retry. | |
8089 | ||
8090 | Note that even when forever is set, we will only wait | |
8091 | forever prior to the start of a packet. After that, we | |
8092 | expect characters to arrive at a brisk pace. They should | |
8093 | show up within remote_timeout intervals. */ | |
8094 | do | |
8095 | c = readchar (timeout); | |
8096 | while (c != SERIAL_TIMEOUT && c != '$' && c != '%'); | |
8097 | ||
8098 | if (c == SERIAL_TIMEOUT) | |
8099 | { | |
8100 | if (expecting_notif) | |
8101 | return -1; /* Don't complain, it's normal to not get | |
8102 | anything in this case. */ | |
8103 | ||
8104 | if (forever) /* Watchdog went off? Kill the target. */ | |
8105 | { | |
8106 | QUIT; | |
ef5ccd6c JM |
8107 | remote_unpush_target (); |
8108 | throw_error (TARGET_CLOSE_ERROR, | |
8109 | _("Watchdog timeout has expired. " | |
8110 | "Target detached.")); | |
5796c8dc SS |
8111 | } |
8112 | if (remote_debug) | |
8113 | fputs_filtered ("Timed out.\n", gdb_stdlog); | |
8114 | } | |
8115 | else | |
8116 | { | |
8117 | /* We've found the start of a packet or notification. | |
8118 | Now collect the data. */ | |
8119 | val = read_frame (buf, sizeof_buf); | |
8120 | if (val >= 0) | |
8121 | break; | |
8122 | } | |
8123 | ||
ef5ccd6c | 8124 | remote_serial_write ("-", 1); |
5796c8dc SS |
8125 | } |
8126 | ||
8127 | if (tries > MAX_TRIES) | |
8128 | { | |
8129 | /* We have tried hard enough, and just can't receive the | |
8130 | packet/notification. Give up. */ | |
8131 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); | |
8132 | ||
8133 | /* Skip the ack char if we're in no-ack mode. */ | |
8134 | if (!rs->noack_mode) | |
ef5ccd6c | 8135 | remote_serial_write ("+", 1); |
5796c8dc SS |
8136 | return -1; |
8137 | } | |
8138 | ||
8139 | /* If we got an ordinary packet, return that to our caller. */ | |
8140 | if (c == '$') | |
8141 | { | |
8142 | if (remote_debug) | |
8143 | { | |
8144 | struct cleanup *old_chain; | |
8145 | char *str; | |
8146 | ||
8147 | str = escape_buffer (*buf, val); | |
8148 | old_chain = make_cleanup (xfree, str); | |
8149 | fprintf_unfiltered (gdb_stdlog, "Packet received: %s\n", str); | |
8150 | do_cleanups (old_chain); | |
8151 | } | |
8152 | ||
8153 | /* Skip the ack char if we're in no-ack mode. */ | |
8154 | if (!rs->noack_mode) | |
ef5ccd6c JM |
8155 | remote_serial_write ("+", 1); |
8156 | if (is_notif != NULL) | |
8157 | *is_notif = 0; | |
5796c8dc SS |
8158 | return val; |
8159 | } | |
8160 | ||
8161 | /* If we got a notification, handle it, and go back to looking | |
8162 | for a packet. */ | |
8163 | else | |
8164 | { | |
8165 | gdb_assert (c == '%'); | |
8166 | ||
8167 | if (remote_debug) | |
8168 | { | |
8169 | struct cleanup *old_chain; | |
8170 | char *str; | |
8171 | ||
8172 | str = escape_buffer (*buf, val); | |
8173 | old_chain = make_cleanup (xfree, str); | |
8174 | fprintf_unfiltered (gdb_stdlog, | |
8175 | " Notification received: %s\n", | |
8176 | str); | |
8177 | do_cleanups (old_chain); | |
8178 | } | |
ef5ccd6c JM |
8179 | if (is_notif != NULL) |
8180 | *is_notif = 1; | |
5796c8dc | 8181 | |
25e4902b | 8182 | handle_notification (rs->notif_state, *buf); |
5796c8dc SS |
8183 | |
8184 | /* Notifications require no acknowledgement. */ | |
8185 | ||
8186 | if (expecting_notif) | |
ef5ccd6c | 8187 | return val; |
5796c8dc SS |
8188 | } |
8189 | } | |
8190 | } | |
8191 | ||
8192 | static int | |
8193 | getpkt_sane (char **buf, long *sizeof_buf, int forever) | |
8194 | { | |
ef5ccd6c | 8195 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 0, NULL); |
5796c8dc SS |
8196 | } |
8197 | ||
8198 | static int | |
ef5ccd6c JM |
8199 | getpkt_or_notif_sane (char **buf, long *sizeof_buf, int forever, |
8200 | int *is_notif) | |
5796c8dc | 8201 | { |
ef5ccd6c JM |
8202 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 1, |
8203 | is_notif); | |
5796c8dc SS |
8204 | } |
8205 | ||
25e4902b AHJ |
8206 | /* Check whether EVENT is a fork event for the process specified |
8207 | by the pid passed in DATA, and if it is, kill the fork child. */ | |
a45ae5f8 JM |
8208 | |
8209 | static int | |
25e4902b AHJ |
8210 | kill_child_of_pending_fork (QUEUE (stop_reply_p) *q, |
8211 | QUEUE_ITER (stop_reply_p) *iter, | |
8212 | stop_reply_p event, | |
8213 | void *data) | |
8214 | { | |
8215 | struct queue_iter_param *param = data; | |
8216 | int parent_pid = *(int *) param->input; | |
8217 | ||
8218 | if (is_pending_fork_parent (&event->ws, parent_pid, event->ptid)) | |
8219 | { | |
8220 | struct remote_state *rs = get_remote_state (); | |
8221 | int child_pid = ptid_get_pid (event->ws.value.related_pid); | |
8222 | int res; | |
8223 | ||
8224 | res = remote_vkill (child_pid, rs); | |
8225 | if (res != 0) | |
8226 | error (_("Can't kill fork child process %d"), child_pid); | |
8227 | } | |
8228 | ||
8229 | return 1; | |
8230 | } | |
8231 | ||
8232 | /* Kill any new fork children of process PID that haven't been | |
8233 | processed by follow_fork. */ | |
8234 | ||
8235 | static void | |
8236 | kill_new_fork_children (int pid, struct remote_state *rs) | |
a45ae5f8 | 8237 | { |
25e4902b AHJ |
8238 | struct thread_info *thread; |
8239 | struct notif_client *notif = ¬if_client_stop; | |
8240 | struct queue_iter_param param; | |
8241 | ||
8242 | /* Kill the fork child threads of any threads in process PID | |
8243 | that are stopped at a fork event. */ | |
8244 | ALL_NON_EXITED_THREADS (thread) | |
8245 | { | |
8246 | struct target_waitstatus *ws = &thread->pending_follow; | |
8247 | ||
8248 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
8249 | { | |
8250 | struct remote_state *rs = get_remote_state (); | |
8251 | int child_pid = ptid_get_pid (ws->value.related_pid); | |
8252 | int res; | |
8253 | ||
8254 | res = remote_vkill (child_pid, rs); | |
8255 | if (res != 0) | |
8256 | error (_("Can't kill fork child process %d"), child_pid); | |
8257 | } | |
8258 | } | |
8259 | ||
8260 | /* Check for any pending fork events (not reported or processed yet) | |
8261 | in process PID and kill those fork child threads as well. */ | |
8262 | remote_notif_get_pending_events (notif); | |
8263 | param.input = &pid; | |
8264 | param.output = NULL; | |
8265 | QUEUE_iterate (stop_reply_p, stop_reply_queue, | |
8266 | kill_child_of_pending_fork, ¶m); | |
a45ae5f8 JM |
8267 | } |
8268 | ||
25e4902b | 8269 | \f |
5796c8dc SS |
8270 | static void |
8271 | remote_kill (struct target_ops *ops) | |
8272 | { | |
25e4902b AHJ |
8273 | |
8274 | /* Catch errors so the user can quit from gdb even when we | |
5796c8dc | 8275 | aren't on speaking terms with the remote system. */ |
25e4902b AHJ |
8276 | TRY |
8277 | { | |
8278 | putpkt ("k"); | |
8279 | } | |
8280 | CATCH (ex, RETURN_MASK_ERROR) | |
8281 | { | |
8282 | if (ex.error == TARGET_CLOSE_ERROR) | |
8283 | { | |
8284 | /* If we got an (EOF) error that caused the target | |
8285 | to go away, then we're done, that's what we wanted. | |
8286 | "k" is susceptible to cause a premature EOF, given | |
8287 | that the remote server isn't actually required to | |
8288 | reply to "k", and it can happen that it doesn't | |
8289 | even get to reply ACK to the "k". */ | |
8290 | return; | |
8291 | } | |
8292 | ||
8293 | /* Otherwise, something went wrong. We didn't actually kill | |
8294 | the target. Just propagate the exception, and let the | |
8295 | user or higher layers decide what to do. */ | |
8296 | throw_exception (ex); | |
8297 | } | |
8298 | END_CATCH | |
5796c8dc | 8299 | |
25e4902b AHJ |
8300 | /* We've killed the remote end, we get to mourn it. Since this is |
8301 | target remote, single-process, mourning the inferior also | |
8302 | unpushes remote_ops. */ | |
5796c8dc SS |
8303 | target_mourn_inferior (); |
8304 | } | |
8305 | ||
8306 | static int | |
8307 | remote_vkill (int pid, struct remote_state *rs) | |
8308 | { | |
25e4902b | 8309 | if (packet_support (PACKET_vKill) == PACKET_DISABLE) |
5796c8dc SS |
8310 | return -1; |
8311 | ||
8312 | /* Tell the remote target to detach. */ | |
ef5ccd6c | 8313 | xsnprintf (rs->buf, get_remote_packet_size (), "vKill;%x", pid); |
5796c8dc SS |
8314 | putpkt (rs->buf); |
8315 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8316 | ||
25e4902b AHJ |
8317 | switch (packet_ok (rs->buf, |
8318 | &remote_protocol_packets[PACKET_vKill])) | |
8319 | { | |
8320 | case PACKET_OK: | |
8321 | return 0; | |
8322 | case PACKET_ERROR: | |
8323 | return 1; | |
8324 | case PACKET_UNKNOWN: | |
8325 | return -1; | |
8326 | default: | |
8327 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
8328 | } | |
5796c8dc SS |
8329 | } |
8330 | ||
8331 | static void | |
8332 | extended_remote_kill (struct target_ops *ops) | |
8333 | { | |
8334 | int res; | |
8335 | int pid = ptid_get_pid (inferior_ptid); | |
8336 | struct remote_state *rs = get_remote_state (); | |
8337 | ||
25e4902b AHJ |
8338 | /* If we're stopped while forking and we haven't followed yet, kill the |
8339 | child task. We need to do this before killing the parent task | |
8340 | because if this is a vfork then the parent will be sleeping. */ | |
8341 | kill_new_fork_children (pid, rs); | |
8342 | ||
5796c8dc | 8343 | res = remote_vkill (pid, rs); |
ef5ccd6c | 8344 | if (res == -1 && !(rs->extended && remote_multi_process_p (rs))) |
5796c8dc SS |
8345 | { |
8346 | /* Don't try 'k' on a multi-process aware stub -- it has no way | |
8347 | to specify the pid. */ | |
8348 | ||
8349 | putpkt ("k"); | |
8350 | #if 0 | |
8351 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8352 | if (rs->buf[0] != 'O' || rs->buf[0] != 'K') | |
8353 | res = 1; | |
8354 | #else | |
8355 | /* Don't wait for it to die. I'm not really sure it matters whether | |
8356 | we do or not. For the existing stubs, kill is a noop. */ | |
8357 | res = 0; | |
8358 | #endif | |
8359 | } | |
8360 | ||
8361 | if (res != 0) | |
8362 | error (_("Can't kill process")); | |
8363 | ||
8364 | target_mourn_inferior (); | |
8365 | } | |
8366 | ||
8367 | static void | |
25e4902b | 8368 | remote_mourn (struct target_ops *target) |
5796c8dc SS |
8369 | { |
8370 | unpush_target (target); | |
8371 | ||
8372 | /* remote_close takes care of doing most of the clean up. */ | |
8373 | generic_mourn_inferior (); | |
8374 | } | |
8375 | ||
8376 | static void | |
25e4902b | 8377 | extended_remote_mourn (struct target_ops *target) |
5796c8dc SS |
8378 | { |
8379 | struct remote_state *rs = get_remote_state (); | |
8380 | ||
8381 | /* In case we got here due to an error, but we're going to stay | |
8382 | connected. */ | |
8383 | rs->waiting_for_stop_reply = 0; | |
8384 | ||
5796c8dc SS |
8385 | /* If the current general thread belonged to the process we just |
8386 | detached from or has exited, the remote side current general | |
8387 | thread becomes undefined. Considering a case like this: | |
8388 | ||
8389 | - We just got here due to a detach. | |
8390 | - The process that we're detaching from happens to immediately | |
8391 | report a global breakpoint being hit in non-stop mode, in the | |
8392 | same thread we had selected before. | |
8393 | - GDB attaches to this process again. | |
8394 | - This event happens to be the next event we handle. | |
8395 | ||
8396 | GDB would consider that the current general thread didn't need to | |
8397 | be set on the stub side (with Hg), since for all it knew, | |
8398 | GENERAL_THREAD hadn't changed. | |
8399 | ||
8400 | Notice that although in all-stop mode, the remote server always | |
8401 | sets the current thread to the thread reporting the stop event, | |
8402 | that doesn't happen in non-stop mode; in non-stop, the stub *must | |
8403 | not* change the current thread when reporting a breakpoint hit, | |
8404 | due to the decoupling of event reporting and event handling. | |
8405 | ||
8406 | To keep things simple, we always invalidate our notion of the | |
8407 | current thread. */ | |
25e4902b | 8408 | record_currthread (rs, minus_one_ptid); |
5796c8dc SS |
8409 | |
8410 | /* Unlike "target remote", we do not want to unpush the target; then | |
8411 | the next time the user says "run", we won't be connected. */ | |
8412 | ||
8413 | /* Call common code to mark the inferior as not running. */ | |
8414 | generic_mourn_inferior (); | |
8415 | ||
8416 | if (!have_inferiors ()) | |
8417 | { | |
8418 | if (!remote_multi_process_p (rs)) | |
8419 | { | |
8420 | /* Check whether the target is running now - some remote stubs | |
8421 | automatically restart after kill. */ | |
8422 | putpkt ("?"); | |
8423 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8424 | ||
8425 | if (rs->buf[0] == 'S' || rs->buf[0] == 'T') | |
8426 | { | |
c50c785c JM |
8427 | /* Assume that the target has been restarted. Set |
8428 | inferior_ptid so that bits of core GDB realizes | |
8429 | there's something here, e.g., so that the user can | |
8430 | say "kill" again. */ | |
5796c8dc SS |
8431 | inferior_ptid = magic_null_ptid; |
8432 | } | |
8433 | } | |
8434 | } | |
8435 | } | |
8436 | ||
a45ae5f8 | 8437 | static int |
25e4902b | 8438 | extended_remote_supports_disable_randomization (struct target_ops *self) |
a45ae5f8 | 8439 | { |
25e4902b | 8440 | return packet_support (PACKET_QDisableRandomization) == PACKET_ENABLE; |
a45ae5f8 JM |
8441 | } |
8442 | ||
8443 | static void | |
8444 | extended_remote_disable_randomization (int val) | |
8445 | { | |
8446 | struct remote_state *rs = get_remote_state (); | |
8447 | char *reply; | |
8448 | ||
ef5ccd6c JM |
8449 | xsnprintf (rs->buf, get_remote_packet_size (), "QDisableRandomization:%x", |
8450 | val); | |
a45ae5f8 JM |
8451 | putpkt (rs->buf); |
8452 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
8453 | if (*reply == '\0') | |
8454 | error (_("Target does not support QDisableRandomization.")); | |
8455 | if (strcmp (reply, "OK") != 0) | |
8456 | error (_("Bogus QDisableRandomization reply from target: %s"), reply); | |
8457 | } | |
8458 | ||
5796c8dc SS |
8459 | static int |
8460 | extended_remote_run (char *args) | |
8461 | { | |
8462 | struct remote_state *rs = get_remote_state (); | |
8463 | int len; | |
8464 | ||
8465 | /* If the user has disabled vRun support, or we have detected that | |
8466 | support is not available, do not try it. */ | |
25e4902b | 8467 | if (packet_support (PACKET_vRun) == PACKET_DISABLE) |
5796c8dc SS |
8468 | return -1; |
8469 | ||
8470 | strcpy (rs->buf, "vRun;"); | |
8471 | len = strlen (rs->buf); | |
8472 | ||
8473 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) | |
8474 | error (_("Remote file name too long for run packet")); | |
25e4902b AHJ |
8475 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf + len, |
8476 | strlen (remote_exec_file)); | |
5796c8dc SS |
8477 | |
8478 | gdb_assert (args != NULL); | |
8479 | if (*args) | |
8480 | { | |
8481 | struct cleanup *back_to; | |
8482 | int i; | |
8483 | char **argv; | |
8484 | ||
8485 | argv = gdb_buildargv (args); | |
25e4902b | 8486 | back_to = make_cleanup_freeargv (argv); |
5796c8dc SS |
8487 | for (i = 0; argv[i] != NULL; i++) |
8488 | { | |
8489 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
8490 | error (_("Argument list too long for run packet")); | |
8491 | rs->buf[len++] = ';'; | |
25e4902b AHJ |
8492 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf + len, |
8493 | strlen (argv[i])); | |
5796c8dc SS |
8494 | } |
8495 | do_cleanups (back_to); | |
8496 | } | |
8497 | ||
8498 | rs->buf[len++] = '\0'; | |
8499 | ||
8500 | putpkt (rs->buf); | |
8501 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8502 | ||
25e4902b | 8503 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun])) |
5796c8dc | 8504 | { |
25e4902b | 8505 | case PACKET_OK: |
ef5ccd6c | 8506 | /* We have a wait response. All is well. */ |
5796c8dc | 8507 | return 0; |
25e4902b AHJ |
8508 | case PACKET_UNKNOWN: |
8509 | return -1; | |
8510 | case PACKET_ERROR: | |
5796c8dc SS |
8511 | if (remote_exec_file[0] == '\0') |
8512 | error (_("Running the default executable on the remote target failed; " | |
8513 | "try \"set remote exec-file\"?")); | |
8514 | else | |
8515 | error (_("Running \"%s\" on the remote target failed"), | |
8516 | remote_exec_file); | |
25e4902b AHJ |
8517 | default: |
8518 | gdb_assert_not_reached (_("bad switch")); | |
5796c8dc SS |
8519 | } |
8520 | } | |
8521 | ||
8522 | /* In the extended protocol we want to be able to do things like | |
8523 | "run" and have them basically work as expected. So we need | |
8524 | a special create_inferior function. We support changing the | |
8525 | executable file and the command line arguments, but not the | |
8526 | environment. */ | |
8527 | ||
8528 | static void | |
25e4902b AHJ |
8529 | extended_remote_create_inferior (struct target_ops *ops, |
8530 | char *exec_file, char *args, | |
8531 | char **env, int from_tty) | |
5796c8dc | 8532 | { |
ef5ccd6c JM |
8533 | int run_worked; |
8534 | char *stop_reply; | |
8535 | struct remote_state *rs = get_remote_state (); | |
8536 | ||
5796c8dc SS |
8537 | /* If running asynchronously, register the target file descriptor |
8538 | with the event loop. */ | |
8539 | if (target_can_async_p ()) | |
25e4902b | 8540 | target_async (1); |
5796c8dc | 8541 | |
a45ae5f8 | 8542 | /* Disable address space randomization if requested (and supported). */ |
25e4902b | 8543 | if (extended_remote_supports_disable_randomization (ops)) |
a45ae5f8 JM |
8544 | extended_remote_disable_randomization (disable_randomization); |
8545 | ||
5796c8dc | 8546 | /* Now restart the remote server. */ |
ef5ccd6c JM |
8547 | run_worked = extended_remote_run (args) != -1; |
8548 | if (!run_worked) | |
5796c8dc SS |
8549 | { |
8550 | /* vRun was not supported. Fail if we need it to do what the | |
8551 | user requested. */ | |
8552 | if (remote_exec_file[0]) | |
8553 | error (_("Remote target does not support \"set remote exec-file\"")); | |
8554 | if (args[0]) | |
8555 | error (_("Remote target does not support \"set args\" or run <ARGS>")); | |
8556 | ||
8557 | /* Fall back to "R". */ | |
8558 | extended_remote_restart (); | |
8559 | } | |
8560 | ||
cf7f2e2d JM |
8561 | if (!have_inferiors ()) |
8562 | { | |
8563 | /* Clean up from the last time we ran, before we mark the target | |
8564 | running again. This will mark breakpoints uninserted, and | |
8565 | get_offsets may insert breakpoints. */ | |
8566 | init_thread_list (); | |
8567 | init_wait_for_inferior (); | |
8568 | } | |
5796c8dc | 8569 | |
ef5ccd6c JM |
8570 | /* vRun's success return is a stop reply. */ |
8571 | stop_reply = run_worked ? rs->buf : NULL; | |
8572 | add_current_inferior_and_thread (stop_reply); | |
5796c8dc SS |
8573 | |
8574 | /* Get updated offsets, if the stub uses qOffsets. */ | |
8575 | get_offsets (); | |
8576 | } | |
5796c8dc SS |
8577 | \f |
8578 | ||
ef5ccd6c JM |
8579 | /* Given a location's target info BP_TGT and the packet buffer BUF, output |
8580 | the list of conditions (in agent expression bytecode format), if any, the | |
8581 | target needs to evaluate. The output is placed into the packet buffer | |
8582 | started from BUF and ended at BUF_END. */ | |
8583 | ||
8584 | static int | |
8585 | remote_add_target_side_condition (struct gdbarch *gdbarch, | |
8586 | struct bp_target_info *bp_tgt, char *buf, | |
8587 | char *buf_end) | |
8588 | { | |
8589 | struct agent_expr *aexpr = NULL; | |
8590 | int i, ix; | |
8591 | char *pkt; | |
8592 | char *buf_start = buf; | |
8593 | ||
8594 | if (VEC_empty (agent_expr_p, bp_tgt->conditions)) | |
8595 | return 0; | |
8596 | ||
8597 | buf += strlen (buf); | |
8598 | xsnprintf (buf, buf_end - buf, "%s", ";"); | |
8599 | buf++; | |
8600 | ||
8601 | /* Send conditions to the target and free the vector. */ | |
8602 | for (ix = 0; | |
8603 | VEC_iterate (agent_expr_p, bp_tgt->conditions, ix, aexpr); | |
8604 | ix++) | |
8605 | { | |
8606 | xsnprintf (buf, buf_end - buf, "X%x,", aexpr->len); | |
8607 | buf += strlen (buf); | |
8608 | for (i = 0; i < aexpr->len; ++i) | |
8609 | buf = pack_hex_byte (buf, aexpr->buf[i]); | |
8610 | *buf = '\0'; | |
8611 | } | |
ef5ccd6c JM |
8612 | return 0; |
8613 | } | |
8614 | ||
8615 | static void | |
8616 | remote_add_target_side_commands (struct gdbarch *gdbarch, | |
8617 | struct bp_target_info *bp_tgt, char *buf) | |
8618 | { | |
8619 | struct agent_expr *aexpr = NULL; | |
8620 | int i, ix; | |
8621 | ||
8622 | if (VEC_empty (agent_expr_p, bp_tgt->tcommands)) | |
8623 | return; | |
8624 | ||
8625 | buf += strlen (buf); | |
8626 | ||
8627 | sprintf (buf, ";cmds:%x,", bp_tgt->persist); | |
8628 | buf += strlen (buf); | |
8629 | ||
8630 | /* Concatenate all the agent expressions that are commands into the | |
8631 | cmds parameter. */ | |
8632 | for (ix = 0; | |
8633 | VEC_iterate (agent_expr_p, bp_tgt->tcommands, ix, aexpr); | |
8634 | ix++) | |
8635 | { | |
8636 | sprintf (buf, "X%x,", aexpr->len); | |
8637 | buf += strlen (buf); | |
8638 | for (i = 0; i < aexpr->len; ++i) | |
8639 | buf = pack_hex_byte (buf, aexpr->buf[i]); | |
8640 | *buf = '\0'; | |
8641 | } | |
ef5ccd6c JM |
8642 | } |
8643 | ||
5796c8dc SS |
8644 | /* Insert a breakpoint. On targets that have software breakpoint |
8645 | support, we ask the remote target to do the work; on targets | |
8646 | which don't, we insert a traditional memory breakpoint. */ | |
8647 | ||
8648 | static int | |
25e4902b AHJ |
8649 | remote_insert_breakpoint (struct target_ops *ops, |
8650 | struct gdbarch *gdbarch, | |
5796c8dc SS |
8651 | struct bp_target_info *bp_tgt) |
8652 | { | |
8653 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. | |
8654 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
8655 | fails, and the user has explicitly requested the Z support then | |
8656 | report an error, otherwise, mark it disabled and go on. */ | |
8657 | ||
25e4902b | 8658 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
5796c8dc | 8659 | { |
25e4902b | 8660 | CORE_ADDR addr = bp_tgt->reqstd_address; |
5796c8dc | 8661 | struct remote_state *rs; |
ef5ccd6c | 8662 | char *p, *endbuf; |
5796c8dc | 8663 | int bpsize; |
ef5ccd6c | 8664 | struct condition_list *cond = NULL; |
5796c8dc | 8665 | |
25e4902b AHJ |
8666 | /* Make sure the remote is pointing at the right process, if |
8667 | necessary. */ | |
8668 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8669 | set_general_process (); | |
8670 | ||
cf7f2e2d | 8671 | gdbarch_remote_breakpoint_from_pc (gdbarch, &addr, &bpsize); |
5796c8dc SS |
8672 | |
8673 | rs = get_remote_state (); | |
8674 | p = rs->buf; | |
ef5ccd6c | 8675 | endbuf = rs->buf + get_remote_packet_size (); |
5796c8dc SS |
8676 | |
8677 | *(p++) = 'Z'; | |
8678 | *(p++) = '0'; | |
8679 | *(p++) = ','; | |
8680 | addr = (ULONGEST) remote_address_masked (addr); | |
8681 | p += hexnumstr (p, addr); | |
ef5ccd6c JM |
8682 | xsnprintf (p, endbuf - p, ",%d", bpsize); |
8683 | ||
25e4902b | 8684 | if (remote_supports_cond_breakpoints (ops)) |
ef5ccd6c JM |
8685 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
8686 | ||
25e4902b | 8687 | if (remote_can_run_breakpoint_commands (ops)) |
ef5ccd6c | 8688 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
5796c8dc SS |
8689 | |
8690 | putpkt (rs->buf); | |
8691 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8692 | ||
8693 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) | |
8694 | { | |
8695 | case PACKET_ERROR: | |
8696 | return -1; | |
8697 | case PACKET_OK: | |
8698 | bp_tgt->placed_address = addr; | |
8699 | bp_tgt->placed_size = bpsize; | |
8700 | return 0; | |
8701 | case PACKET_UNKNOWN: | |
8702 | break; | |
8703 | } | |
8704 | } | |
8705 | ||
25e4902b AHJ |
8706 | /* If this breakpoint has target-side commands but this stub doesn't |
8707 | support Z0 packets, throw error. */ | |
8708 | if (!VEC_empty (agent_expr_p, bp_tgt->tcommands)) | |
8709 | throw_error (NOT_SUPPORTED_ERROR, _("\ | |
8710 | Target doesn't support breakpoints that have target side commands.")); | |
8711 | ||
8712 | return memory_insert_breakpoint (ops, gdbarch, bp_tgt); | |
5796c8dc SS |
8713 | } |
8714 | ||
8715 | static int | |
25e4902b AHJ |
8716 | remote_remove_breakpoint (struct target_ops *ops, |
8717 | struct gdbarch *gdbarch, | |
5796c8dc SS |
8718 | struct bp_target_info *bp_tgt) |
8719 | { | |
8720 | CORE_ADDR addr = bp_tgt->placed_address; | |
8721 | struct remote_state *rs = get_remote_state (); | |
8722 | ||
25e4902b | 8723 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
5796c8dc SS |
8724 | { |
8725 | char *p = rs->buf; | |
ef5ccd6c | 8726 | char *endbuf = rs->buf + get_remote_packet_size (); |
5796c8dc | 8727 | |
25e4902b AHJ |
8728 | /* Make sure the remote is pointing at the right process, if |
8729 | necessary. */ | |
8730 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8731 | set_general_process (); | |
8732 | ||
5796c8dc SS |
8733 | *(p++) = 'z'; |
8734 | *(p++) = '0'; | |
8735 | *(p++) = ','; | |
8736 | ||
8737 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); | |
8738 | p += hexnumstr (p, addr); | |
ef5ccd6c | 8739 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->placed_size); |
5796c8dc SS |
8740 | |
8741 | putpkt (rs->buf); | |
8742 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8743 | ||
8744 | return (rs->buf[0] == 'E'); | |
8745 | } | |
8746 | ||
25e4902b | 8747 | return memory_remove_breakpoint (ops, gdbarch, bp_tgt); |
5796c8dc SS |
8748 | } |
8749 | ||
8750 | static int | |
8751 | watchpoint_to_Z_packet (int type) | |
8752 | { | |
8753 | switch (type) | |
8754 | { | |
8755 | case hw_write: | |
8756 | return Z_PACKET_WRITE_WP; | |
8757 | break; | |
8758 | case hw_read: | |
8759 | return Z_PACKET_READ_WP; | |
8760 | break; | |
8761 | case hw_access: | |
8762 | return Z_PACKET_ACCESS_WP; | |
8763 | break; | |
8764 | default: | |
8765 | internal_error (__FILE__, __LINE__, | |
8766 | _("hw_bp_to_z: bad watchpoint type %d"), type); | |
8767 | } | |
8768 | } | |
8769 | ||
8770 | static int | |
25e4902b AHJ |
8771 | remote_insert_watchpoint (struct target_ops *self, |
8772 | CORE_ADDR addr, int len, int type, | |
cf7f2e2d | 8773 | struct expression *cond) |
5796c8dc SS |
8774 | { |
8775 | struct remote_state *rs = get_remote_state (); | |
ef5ccd6c | 8776 | char *endbuf = rs->buf + get_remote_packet_size (); |
5796c8dc SS |
8777 | char *p; |
8778 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); | |
8779 | ||
25e4902b | 8780 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
cf7f2e2d | 8781 | return 1; |
5796c8dc | 8782 | |
25e4902b AHJ |
8783 | /* Make sure the remote is pointing at the right process, if |
8784 | necessary. */ | |
8785 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8786 | set_general_process (); | |
8787 | ||
ef5ccd6c | 8788 | xsnprintf (rs->buf, endbuf - rs->buf, "Z%x,", packet); |
5796c8dc SS |
8789 | p = strchr (rs->buf, '\0'); |
8790 | addr = remote_address_masked (addr); | |
8791 | p += hexnumstr (p, (ULONGEST) addr); | |
ef5ccd6c | 8792 | xsnprintf (p, endbuf - p, ",%x", len); |
5796c8dc SS |
8793 | |
8794 | putpkt (rs->buf); | |
8795 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8796 | ||
8797 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) | |
8798 | { | |
8799 | case PACKET_ERROR: | |
5796c8dc | 8800 | return -1; |
cf7f2e2d JM |
8801 | case PACKET_UNKNOWN: |
8802 | return 1; | |
5796c8dc SS |
8803 | case PACKET_OK: |
8804 | return 0; | |
8805 | } | |
8806 | internal_error (__FILE__, __LINE__, | |
8807 | _("remote_insert_watchpoint: reached end of function")); | |
8808 | } | |
8809 | ||
ef5ccd6c JM |
8810 | static int |
8811 | remote_watchpoint_addr_within_range (struct target_ops *target, CORE_ADDR addr, | |
8812 | CORE_ADDR start, int length) | |
8813 | { | |
8814 | CORE_ADDR diff = remote_address_masked (addr - start); | |
8815 | ||
8816 | return diff < length; | |
8817 | } | |
8818 | ||
5796c8dc SS |
8819 | |
8820 | static int | |
25e4902b AHJ |
8821 | remote_remove_watchpoint (struct target_ops *self, |
8822 | CORE_ADDR addr, int len, int type, | |
cf7f2e2d | 8823 | struct expression *cond) |
5796c8dc SS |
8824 | { |
8825 | struct remote_state *rs = get_remote_state (); | |
ef5ccd6c | 8826 | char *endbuf = rs->buf + get_remote_packet_size (); |
5796c8dc SS |
8827 | char *p; |
8828 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); | |
8829 | ||
25e4902b | 8830 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
5796c8dc SS |
8831 | return -1; |
8832 | ||
25e4902b AHJ |
8833 | /* Make sure the remote is pointing at the right process, if |
8834 | necessary. */ | |
8835 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8836 | set_general_process (); | |
8837 | ||
ef5ccd6c | 8838 | xsnprintf (rs->buf, endbuf - rs->buf, "z%x,", packet); |
5796c8dc SS |
8839 | p = strchr (rs->buf, '\0'); |
8840 | addr = remote_address_masked (addr); | |
8841 | p += hexnumstr (p, (ULONGEST) addr); | |
ef5ccd6c | 8842 | xsnprintf (p, endbuf - p, ",%x", len); |
5796c8dc SS |
8843 | putpkt (rs->buf); |
8844 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8845 | ||
8846 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) | |
8847 | { | |
8848 | case PACKET_ERROR: | |
8849 | case PACKET_UNKNOWN: | |
8850 | return -1; | |
8851 | case PACKET_OK: | |
8852 | return 0; | |
8853 | } | |
8854 | internal_error (__FILE__, __LINE__, | |
8855 | _("remote_remove_watchpoint: reached end of function")); | |
8856 | } | |
8857 | ||
8858 | ||
8859 | int remote_hw_watchpoint_limit = -1; | |
a45ae5f8 | 8860 | int remote_hw_watchpoint_length_limit = -1; |
5796c8dc SS |
8861 | int remote_hw_breakpoint_limit = -1; |
8862 | ||
a45ae5f8 | 8863 | static int |
25e4902b AHJ |
8864 | remote_region_ok_for_hw_watchpoint (struct target_ops *self, |
8865 | CORE_ADDR addr, int len) | |
a45ae5f8 JM |
8866 | { |
8867 | if (remote_hw_watchpoint_length_limit == 0) | |
8868 | return 0; | |
8869 | else if (remote_hw_watchpoint_length_limit < 0) | |
8870 | return 1; | |
8871 | else if (len <= remote_hw_watchpoint_length_limit) | |
8872 | return 1; | |
8873 | else | |
8874 | return 0; | |
8875 | } | |
8876 | ||
5796c8dc | 8877 | static int |
25e4902b AHJ |
8878 | remote_check_watch_resources (struct target_ops *self, |
8879 | int type, int cnt, int ot) | |
5796c8dc SS |
8880 | { |
8881 | if (type == bp_hardware_breakpoint) | |
8882 | { | |
8883 | if (remote_hw_breakpoint_limit == 0) | |
8884 | return 0; | |
8885 | else if (remote_hw_breakpoint_limit < 0) | |
8886 | return 1; | |
8887 | else if (cnt <= remote_hw_breakpoint_limit) | |
8888 | return 1; | |
8889 | } | |
8890 | else | |
8891 | { | |
8892 | if (remote_hw_watchpoint_limit == 0) | |
8893 | return 0; | |
8894 | else if (remote_hw_watchpoint_limit < 0) | |
8895 | return 1; | |
8896 | else if (ot) | |
8897 | return -1; | |
8898 | else if (cnt <= remote_hw_watchpoint_limit) | |
8899 | return 1; | |
8900 | } | |
8901 | return -1; | |
8902 | } | |
8903 | ||
25e4902b AHJ |
8904 | /* The to_stopped_by_sw_breakpoint method of target remote. */ |
8905 | ||
8906 | static int | |
8907 | remote_stopped_by_sw_breakpoint (struct target_ops *ops) | |
8908 | { | |
8909 | struct remote_state *rs = get_remote_state (); | |
8910 | ||
8911 | return rs->stop_reason == TARGET_STOPPED_BY_SW_BREAKPOINT; | |
8912 | } | |
8913 | ||
8914 | /* The to_supports_stopped_by_sw_breakpoint method of target | |
8915 | remote. */ | |
8916 | ||
8917 | static int | |
8918 | remote_supports_stopped_by_sw_breakpoint (struct target_ops *ops) | |
8919 | { | |
8920 | struct remote_state *rs = get_remote_state (); | |
8921 | ||
8922 | return (packet_support (PACKET_swbreak_feature) == PACKET_ENABLE); | |
8923 | } | |
8924 | ||
8925 | /* The to_stopped_by_hw_breakpoint method of target remote. */ | |
8926 | ||
8927 | static int | |
8928 | remote_stopped_by_hw_breakpoint (struct target_ops *ops) | |
8929 | { | |
8930 | struct remote_state *rs = get_remote_state (); | |
8931 | ||
8932 | return rs->stop_reason == TARGET_STOPPED_BY_HW_BREAKPOINT; | |
8933 | } | |
8934 | ||
8935 | /* The to_supports_stopped_by_hw_breakpoint method of target | |
8936 | remote. */ | |
8937 | ||
8938 | static int | |
8939 | remote_supports_stopped_by_hw_breakpoint (struct target_ops *ops) | |
8940 | { | |
8941 | struct remote_state *rs = get_remote_state (); | |
8942 | ||
8943 | return (packet_support (PACKET_hwbreak_feature) == PACKET_ENABLE); | |
8944 | } | |
8945 | ||
5796c8dc | 8946 | static int |
25e4902b | 8947 | remote_stopped_by_watchpoint (struct target_ops *ops) |
5796c8dc | 8948 | { |
25e4902b AHJ |
8949 | struct remote_state *rs = get_remote_state (); |
8950 | ||
8951 | return rs->stop_reason == TARGET_STOPPED_BY_WATCHPOINT; | |
5796c8dc SS |
8952 | } |
8953 | ||
8954 | static int | |
8955 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
8956 | { | |
25e4902b | 8957 | struct remote_state *rs = get_remote_state (); |
5796c8dc | 8958 | int rc = 0; |
cf7f2e2d | 8959 | |
25e4902b | 8960 | if (remote_stopped_by_watchpoint (target)) |
5796c8dc | 8961 | { |
25e4902b | 8962 | *addr_p = rs->remote_watch_data_address; |
5796c8dc SS |
8963 | rc = 1; |
8964 | } | |
8965 | ||
8966 | return rc; | |
8967 | } | |
8968 | ||
8969 | ||
8970 | static int | |
25e4902b | 8971 | remote_insert_hw_breakpoint (struct target_ops *self, struct gdbarch *gdbarch, |
5796c8dc SS |
8972 | struct bp_target_info *bp_tgt) |
8973 | { | |
25e4902b | 8974 | CORE_ADDR addr = bp_tgt->reqstd_address; |
5796c8dc | 8975 | struct remote_state *rs; |
ef5ccd6c JM |
8976 | char *p, *endbuf; |
8977 | char *message; | |
25e4902b | 8978 | int bpsize; |
5796c8dc SS |
8979 | |
8980 | /* The length field should be set to the size of a breakpoint | |
8981 | instruction, even though we aren't inserting one ourselves. */ | |
8982 | ||
25e4902b | 8983 | gdbarch_remote_breakpoint_from_pc (gdbarch, &addr, &bpsize); |
5796c8dc | 8984 | |
25e4902b | 8985 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5796c8dc SS |
8986 | return -1; |
8987 | ||
25e4902b AHJ |
8988 | /* Make sure the remote is pointing at the right process, if |
8989 | necessary. */ | |
8990 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
8991 | set_general_process (); | |
8992 | ||
5796c8dc SS |
8993 | rs = get_remote_state (); |
8994 | p = rs->buf; | |
ef5ccd6c | 8995 | endbuf = rs->buf + get_remote_packet_size (); |
5796c8dc SS |
8996 | |
8997 | *(p++) = 'Z'; | |
8998 | *(p++) = '1'; | |
8999 | *(p++) = ','; | |
9000 | ||
25e4902b | 9001 | addr = remote_address_masked (addr); |
5796c8dc | 9002 | p += hexnumstr (p, (ULONGEST) addr); |
25e4902b | 9003 | xsnprintf (p, endbuf - p, ",%x", bpsize); |
ef5ccd6c | 9004 | |
25e4902b | 9005 | if (remote_supports_cond_breakpoints (self)) |
ef5ccd6c JM |
9006 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
9007 | ||
25e4902b | 9008 | if (remote_can_run_breakpoint_commands (self)) |
ef5ccd6c | 9009 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
5796c8dc SS |
9010 | |
9011 | putpkt (rs->buf); | |
9012 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9013 | ||
9014 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) | |
9015 | { | |
9016 | case PACKET_ERROR: | |
ef5ccd6c JM |
9017 | if (rs->buf[1] == '.') |
9018 | { | |
9019 | message = strchr (rs->buf + 2, '.'); | |
9020 | if (message) | |
9021 | error (_("Remote failure reply: %s"), message + 1); | |
9022 | } | |
9023 | return -1; | |
5796c8dc SS |
9024 | case PACKET_UNKNOWN: |
9025 | return -1; | |
9026 | case PACKET_OK: | |
25e4902b AHJ |
9027 | bp_tgt->placed_address = addr; |
9028 | bp_tgt->placed_size = bpsize; | |
5796c8dc SS |
9029 | return 0; |
9030 | } | |
9031 | internal_error (__FILE__, __LINE__, | |
9032 | _("remote_insert_hw_breakpoint: reached end of function")); | |
9033 | } | |
9034 | ||
9035 | ||
9036 | static int | |
25e4902b | 9037 | remote_remove_hw_breakpoint (struct target_ops *self, struct gdbarch *gdbarch, |
5796c8dc SS |
9038 | struct bp_target_info *bp_tgt) |
9039 | { | |
9040 | CORE_ADDR addr; | |
9041 | struct remote_state *rs = get_remote_state (); | |
9042 | char *p = rs->buf; | |
ef5ccd6c | 9043 | char *endbuf = rs->buf + get_remote_packet_size (); |
5796c8dc | 9044 | |
25e4902b | 9045 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5796c8dc SS |
9046 | return -1; |
9047 | ||
25e4902b AHJ |
9048 | /* Make sure the remote is pointing at the right process, if |
9049 | necessary. */ | |
9050 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
9051 | set_general_process (); | |
9052 | ||
5796c8dc SS |
9053 | *(p++) = 'z'; |
9054 | *(p++) = '1'; | |
9055 | *(p++) = ','; | |
9056 | ||
9057 | addr = remote_address_masked (bp_tgt->placed_address); | |
9058 | p += hexnumstr (p, (ULONGEST) addr); | |
ef5ccd6c | 9059 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->placed_size); |
5796c8dc SS |
9060 | |
9061 | putpkt (rs->buf); | |
9062 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9063 | ||
9064 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) | |
9065 | { | |
9066 | case PACKET_ERROR: | |
9067 | case PACKET_UNKNOWN: | |
9068 | return -1; | |
9069 | case PACKET_OK: | |
9070 | return 0; | |
9071 | } | |
9072 | internal_error (__FILE__, __LINE__, | |
9073 | _("remote_remove_hw_breakpoint: reached end of function")); | |
9074 | } | |
9075 | ||
cf7f2e2d JM |
9076 | /* Verify memory using the "qCRC:" request. */ |
9077 | ||
9078 | static int | |
9079 | remote_verify_memory (struct target_ops *ops, | |
9080 | const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
9081 | { | |
9082 | struct remote_state *rs = get_remote_state (); | |
9083 | unsigned long host_crc, target_crc; | |
9084 | char *tmp; | |
9085 | ||
25e4902b AHJ |
9086 | /* It doesn't make sense to use qCRC if the remote target is |
9087 | connected but not running. */ | |
9088 | if (target_has_execution && packet_support (PACKET_qCRC) != PACKET_DISABLE) | |
9089 | { | |
9090 | enum packet_result result; | |
cf7f2e2d | 9091 | |
25e4902b AHJ |
9092 | /* Make sure the remote is pointing at the right process. */ |
9093 | set_general_process (); | |
cf7f2e2d | 9094 | |
25e4902b AHJ |
9095 | /* FIXME: assumes lma can fit into long. */ |
9096 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", | |
9097 | (long) lma, (long) size); | |
9098 | putpkt (rs->buf); | |
9099 | ||
9100 | /* Be clever; compute the host_crc before waiting for target | |
9101 | reply. */ | |
9102 | host_crc = xcrc32 (data, size, 0xffffffff); | |
cf7f2e2d | 9103 | |
25e4902b AHJ |
9104 | getpkt (&rs->buf, &rs->buf_size, 0); |
9105 | ||
9106 | result = packet_ok (rs->buf, | |
9107 | &remote_protocol_packets[PACKET_qCRC]); | |
9108 | if (result == PACKET_ERROR) | |
9109 | return -1; | |
9110 | else if (result == PACKET_OK) | |
9111 | { | |
9112 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) | |
9113 | target_crc = target_crc * 16 + fromhex (*tmp); | |
cf7f2e2d | 9114 | |
25e4902b AHJ |
9115 | return (host_crc == target_crc); |
9116 | } | |
9117 | } | |
cf7f2e2d | 9118 | |
25e4902b | 9119 | return simple_verify_memory (ops, data, lma, size); |
cf7f2e2d JM |
9120 | } |
9121 | ||
5796c8dc SS |
9122 | /* compare-sections command |
9123 | ||
9124 | With no arguments, compares each loadable section in the exec bfd | |
9125 | with the same memory range on the target, and reports mismatches. | |
cf7f2e2d | 9126 | Useful for verifying the image on the target against the exec file. */ |
5796c8dc SS |
9127 | |
9128 | static void | |
9129 | compare_sections_command (char *args, int from_tty) | |
9130 | { | |
5796c8dc | 9131 | asection *s; |
5796c8dc | 9132 | struct cleanup *old_chain; |
25e4902b | 9133 | gdb_byte *sectdata; |
5796c8dc SS |
9134 | const char *sectname; |
9135 | bfd_size_type size; | |
9136 | bfd_vma lma; | |
9137 | int matched = 0; | |
9138 | int mismatched = 0; | |
cf7f2e2d | 9139 | int res; |
25e4902b | 9140 | int read_only = 0; |
5796c8dc SS |
9141 | |
9142 | if (!exec_bfd) | |
9143 | error (_("command cannot be used without an exec file")); | |
5796c8dc | 9144 | |
25e4902b AHJ |
9145 | /* Make sure the remote is pointing at the right process. */ |
9146 | set_general_process (); | |
9147 | ||
9148 | if (args != NULL && strcmp (args, "-r") == 0) | |
9149 | { | |
9150 | read_only = 1; | |
9151 | args = NULL; | |
9152 | } | |
9153 | ||
5796c8dc SS |
9154 | for (s = exec_bfd->sections; s; s = s->next) |
9155 | { | |
9156 | if (!(s->flags & SEC_LOAD)) | |
c50c785c | 9157 | continue; /* Skip non-loadable section. */ |
5796c8dc | 9158 | |
25e4902b AHJ |
9159 | if (read_only && (s->flags & SEC_READONLY) == 0) |
9160 | continue; /* Skip writeable sections */ | |
9161 | ||
5796c8dc SS |
9162 | size = bfd_get_section_size (s); |
9163 | if (size == 0) | |
c50c785c | 9164 | continue; /* Skip zero-length section. */ |
5796c8dc SS |
9165 | |
9166 | sectname = bfd_get_section_name (exec_bfd, s); | |
9167 | if (args && strcmp (args, sectname) != 0) | |
c50c785c | 9168 | continue; /* Not the section selected by user. */ |
5796c8dc | 9169 | |
c50c785c | 9170 | matched = 1; /* Do this section. */ |
5796c8dc | 9171 | lma = s->lma; |
5796c8dc | 9172 | |
5796c8dc SS |
9173 | sectdata = xmalloc (size); |
9174 | old_chain = make_cleanup (xfree, sectdata); | |
9175 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); | |
5796c8dc | 9176 | |
cf7f2e2d JM |
9177 | res = target_verify_memory (sectdata, lma, size); |
9178 | ||
9179 | if (res == -1) | |
5796c8dc | 9180 | error (_("target memory fault, section %s, range %s -- %s"), sectname, |
ef5ccd6c JM |
9181 | paddress (target_gdbarch (), lma), |
9182 | paddress (target_gdbarch (), lma + size)); | |
5796c8dc SS |
9183 | |
9184 | printf_filtered ("Section %s, range %s -- %s: ", sectname, | |
ef5ccd6c JM |
9185 | paddress (target_gdbarch (), lma), |
9186 | paddress (target_gdbarch (), lma + size)); | |
cf7f2e2d | 9187 | if (res) |
5796c8dc SS |
9188 | printf_filtered ("matched.\n"); |
9189 | else | |
9190 | { | |
9191 | printf_filtered ("MIS-MATCHED!\n"); | |
9192 | mismatched++; | |
9193 | } | |
9194 | ||
9195 | do_cleanups (old_chain); | |
9196 | } | |
9197 | if (mismatched > 0) | |
25e4902b | 9198 | warning (_("One or more sections of the target image does not match\n\ |
5796c8dc SS |
9199 | the loaded file\n")); |
9200 | if (args && !matched) | |
9201 | printf_filtered (_("No loaded section named '%s'.\n"), args); | |
9202 | } | |
9203 | ||
9204 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET | |
9205 | into remote target. The number of bytes written to the remote | |
9206 | target is returned, or -1 for error. */ | |
9207 | ||
25e4902b | 9208 | static enum target_xfer_status |
5796c8dc SS |
9209 | remote_write_qxfer (struct target_ops *ops, const char *object_name, |
9210 | const char *annex, const gdb_byte *writebuf, | |
25e4902b | 9211 | ULONGEST offset, LONGEST len, ULONGEST *xfered_len, |
5796c8dc SS |
9212 | struct packet_config *packet) |
9213 | { | |
9214 | int i, buf_len; | |
9215 | ULONGEST n; | |
9216 | struct remote_state *rs = get_remote_state (); | |
9217 | int max_size = get_memory_write_packet_size (); | |
9218 | ||
9219 | if (packet->support == PACKET_DISABLE) | |
25e4902b | 9220 | return TARGET_XFER_E_IO; |
5796c8dc SS |
9221 | |
9222 | /* Insert header. */ | |
9223 | i = snprintf (rs->buf, max_size, | |
9224 | "qXfer:%s:write:%s:%s:", | |
9225 | object_name, annex ? annex : "", | |
9226 | phex_nz (offset, sizeof offset)); | |
9227 | max_size -= (i + 1); | |
9228 | ||
9229 | /* Escape as much data as fits into rs->buf. */ | |
9230 | buf_len = remote_escape_output | |
25e4902b | 9231 | (writebuf, len, 1, (gdb_byte *) rs->buf + i, &max_size, max_size); |
5796c8dc SS |
9232 | |
9233 | if (putpkt_binary (rs->buf, i + buf_len) < 0 | |
9234 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
9235 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
25e4902b | 9236 | return TARGET_XFER_E_IO; |
5796c8dc SS |
9237 | |
9238 | unpack_varlen_hex (rs->buf, &n); | |
25e4902b AHJ |
9239 | |
9240 | *xfered_len = n; | |
9241 | return TARGET_XFER_OK; | |
5796c8dc SS |
9242 | } |
9243 | ||
9244 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. | |
9245 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
9246 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
9247 | The number of bytes read may be less than LEN without indicating an | |
9248 | EOF. PACKET is checked and updated to indicate whether the remote | |
9249 | target supports this object. */ | |
9250 | ||
25e4902b | 9251 | static enum target_xfer_status |
5796c8dc SS |
9252 | remote_read_qxfer (struct target_ops *ops, const char *object_name, |
9253 | const char *annex, | |
9254 | gdb_byte *readbuf, ULONGEST offset, LONGEST len, | |
25e4902b | 9255 | ULONGEST *xfered_len, |
5796c8dc SS |
9256 | struct packet_config *packet) |
9257 | { | |
5796c8dc SS |
9258 | struct remote_state *rs = get_remote_state (); |
9259 | LONGEST i, n, packet_len; | |
9260 | ||
9261 | if (packet->support == PACKET_DISABLE) | |
25e4902b | 9262 | return TARGET_XFER_E_IO; |
5796c8dc SS |
9263 | |
9264 | /* Check whether we've cached an end-of-object packet that matches | |
9265 | this request. */ | |
25e4902b | 9266 | if (rs->finished_object) |
5796c8dc | 9267 | { |
25e4902b AHJ |
9268 | if (strcmp (object_name, rs->finished_object) == 0 |
9269 | && strcmp (annex ? annex : "", rs->finished_annex) == 0 | |
9270 | && offset == rs->finished_offset) | |
9271 | return TARGET_XFER_EOF; | |
9272 | ||
5796c8dc SS |
9273 | |
9274 | /* Otherwise, we're now reading something different. Discard | |
9275 | the cache. */ | |
25e4902b AHJ |
9276 | xfree (rs->finished_object); |
9277 | xfree (rs->finished_annex); | |
9278 | rs->finished_object = NULL; | |
9279 | rs->finished_annex = NULL; | |
5796c8dc SS |
9280 | } |
9281 | ||
9282 | /* Request only enough to fit in a single packet. The actual data | |
9283 | may not, since we don't know how much of it will need to be escaped; | |
9284 | the target is free to respond with slightly less data. We subtract | |
9285 | five to account for the response type and the protocol frame. */ | |
9286 | n = min (get_remote_packet_size () - 5, len); | |
9287 | snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s", | |
9288 | object_name, annex ? annex : "", | |
9289 | phex_nz (offset, sizeof offset), | |
9290 | phex_nz (n, sizeof n)); | |
9291 | i = putpkt (rs->buf); | |
9292 | if (i < 0) | |
25e4902b | 9293 | return TARGET_XFER_E_IO; |
5796c8dc SS |
9294 | |
9295 | rs->buf[0] = '\0'; | |
9296 | packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
9297 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) | |
25e4902b | 9298 | return TARGET_XFER_E_IO; |
5796c8dc SS |
9299 | |
9300 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
9301 | error (_("Unknown remote qXfer reply: %s"), rs->buf); | |
9302 | ||
9303 | /* 'm' means there is (or at least might be) more data after this | |
9304 | batch. That does not make sense unless there's at least one byte | |
9305 | of data in this reply. */ | |
9306 | if (rs->buf[0] == 'm' && packet_len == 1) | |
9307 | error (_("Remote qXfer reply contained no data.")); | |
9308 | ||
9309 | /* Got some data. */ | |
25e4902b AHJ |
9310 | i = remote_unescape_input ((gdb_byte *) rs->buf + 1, |
9311 | packet_len - 1, readbuf, n); | |
5796c8dc SS |
9312 | |
9313 | /* 'l' is an EOF marker, possibly including a final block of data, | |
9314 | or possibly empty. If we have the final block of a non-empty | |
9315 | object, record this fact to bypass a subsequent partial read. */ | |
9316 | if (rs->buf[0] == 'l' && offset + i > 0) | |
9317 | { | |
25e4902b AHJ |
9318 | rs->finished_object = xstrdup (object_name); |
9319 | rs->finished_annex = xstrdup (annex ? annex : ""); | |
9320 | rs->finished_offset = offset + i; | |
5796c8dc SS |
9321 | } |
9322 | ||
25e4902b AHJ |
9323 | if (i == 0) |
9324 | return TARGET_XFER_EOF; | |
9325 | else | |
9326 | { | |
9327 | *xfered_len = i; | |
9328 | return TARGET_XFER_OK; | |
9329 | } | |
5796c8dc SS |
9330 | } |
9331 | ||
25e4902b | 9332 | static enum target_xfer_status |
5796c8dc SS |
9333 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
9334 | const char *annex, gdb_byte *readbuf, | |
25e4902b AHJ |
9335 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, |
9336 | ULONGEST *xfered_len) | |
5796c8dc SS |
9337 | { |
9338 | struct remote_state *rs; | |
9339 | int i; | |
9340 | char *p2; | |
9341 | char query_type; | |
25e4902b | 9342 | int unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); |
5796c8dc | 9343 | |
c50c785c | 9344 | set_remote_traceframe (); |
5796c8dc SS |
9345 | set_general_thread (inferior_ptid); |
9346 | ||
9347 | rs = get_remote_state (); | |
9348 | ||
9349 | /* Handle memory using the standard memory routines. */ | |
9350 | if (object == TARGET_OBJECT_MEMORY) | |
9351 | { | |
5796c8dc SS |
9352 | /* If the remote target is connected but not running, we should |
9353 | pass this request down to a lower stratum (e.g. the executable | |
9354 | file). */ | |
9355 | if (!target_has_execution) | |
25e4902b | 9356 | return TARGET_XFER_EOF; |
5796c8dc SS |
9357 | |
9358 | if (writebuf != NULL) | |
25e4902b AHJ |
9359 | return remote_write_bytes (offset, writebuf, len, unit_size, |
9360 | xfered_len); | |
5796c8dc | 9361 | else |
25e4902b AHJ |
9362 | return remote_read_bytes (ops, offset, readbuf, len, unit_size, |
9363 | xfered_len); | |
5796c8dc SS |
9364 | } |
9365 | ||
c50c785c | 9366 | /* Handle SPU memory using qxfer packets. */ |
5796c8dc SS |
9367 | if (object == TARGET_OBJECT_SPU) |
9368 | { | |
9369 | if (readbuf) | |
9370 | return remote_read_qxfer (ops, "spu", annex, readbuf, offset, len, | |
25e4902b AHJ |
9371 | xfered_len, &remote_protocol_packets |
9372 | [PACKET_qXfer_spu_read]); | |
5796c8dc SS |
9373 | else |
9374 | return remote_write_qxfer (ops, "spu", annex, writebuf, offset, len, | |
25e4902b AHJ |
9375 | xfered_len, &remote_protocol_packets |
9376 | [PACKET_qXfer_spu_write]); | |
5796c8dc SS |
9377 | } |
9378 | ||
9379 | /* Handle extra signal info using qxfer packets. */ | |
9380 | if (object == TARGET_OBJECT_SIGNAL_INFO) | |
9381 | { | |
9382 | if (readbuf) | |
9383 | return remote_read_qxfer (ops, "siginfo", annex, readbuf, offset, len, | |
25e4902b | 9384 | xfered_len, &remote_protocol_packets |
5796c8dc SS |
9385 | [PACKET_qXfer_siginfo_read]); |
9386 | else | |
c50c785c | 9387 | return remote_write_qxfer (ops, "siginfo", annex, |
25e4902b | 9388 | writebuf, offset, len, xfered_len, |
5796c8dc SS |
9389 | &remote_protocol_packets |
9390 | [PACKET_qXfer_siginfo_write]); | |
9391 | } | |
9392 | ||
cf7f2e2d JM |
9393 | if (object == TARGET_OBJECT_STATIC_TRACE_DATA) |
9394 | { | |
9395 | if (readbuf) | |
c50c785c | 9396 | return remote_read_qxfer (ops, "statictrace", annex, |
25e4902b | 9397 | readbuf, offset, len, xfered_len, |
cf7f2e2d JM |
9398 | &remote_protocol_packets |
9399 | [PACKET_qXfer_statictrace_read]); | |
9400 | else | |
25e4902b | 9401 | return TARGET_XFER_E_IO; |
cf7f2e2d JM |
9402 | } |
9403 | ||
5796c8dc SS |
9404 | /* Only handle flash writes. */ |
9405 | if (writebuf != NULL) | |
9406 | { | |
9407 | LONGEST xfered; | |
9408 | ||
9409 | switch (object) | |
9410 | { | |
9411 | case TARGET_OBJECT_FLASH: | |
25e4902b AHJ |
9412 | return remote_flash_write (ops, offset, len, xfered_len, |
9413 | writebuf); | |
5796c8dc SS |
9414 | |
9415 | default: | |
25e4902b | 9416 | return TARGET_XFER_E_IO; |
5796c8dc SS |
9417 | } |
9418 | } | |
9419 | ||
9420 | /* Map pre-existing objects onto letters. DO NOT do this for new | |
9421 | objects!!! Instead specify new query packets. */ | |
9422 | switch (object) | |
9423 | { | |
9424 | case TARGET_OBJECT_AVR: | |
9425 | query_type = 'R'; | |
9426 | break; | |
9427 | ||
9428 | case TARGET_OBJECT_AUXV: | |
9429 | gdb_assert (annex == NULL); | |
9430 | return remote_read_qxfer (ops, "auxv", annex, readbuf, offset, len, | |
25e4902b | 9431 | xfered_len, |
5796c8dc SS |
9432 | &remote_protocol_packets[PACKET_qXfer_auxv]); |
9433 | ||
9434 | case TARGET_OBJECT_AVAILABLE_FEATURES: | |
9435 | return remote_read_qxfer | |
25e4902b | 9436 | (ops, "features", annex, readbuf, offset, len, xfered_len, |
5796c8dc SS |
9437 | &remote_protocol_packets[PACKET_qXfer_features]); |
9438 | ||
9439 | case TARGET_OBJECT_LIBRARIES: | |
9440 | return remote_read_qxfer | |
25e4902b | 9441 | (ops, "libraries", annex, readbuf, offset, len, xfered_len, |
5796c8dc SS |
9442 | &remote_protocol_packets[PACKET_qXfer_libraries]); |
9443 | ||
a45ae5f8 JM |
9444 | case TARGET_OBJECT_LIBRARIES_SVR4: |
9445 | return remote_read_qxfer | |
25e4902b | 9446 | (ops, "libraries-svr4", annex, readbuf, offset, len, xfered_len, |
a45ae5f8 JM |
9447 | &remote_protocol_packets[PACKET_qXfer_libraries_svr4]); |
9448 | ||
5796c8dc SS |
9449 | case TARGET_OBJECT_MEMORY_MAP: |
9450 | gdb_assert (annex == NULL); | |
9451 | return remote_read_qxfer (ops, "memory-map", annex, readbuf, offset, len, | |
25e4902b | 9452 | xfered_len, |
5796c8dc SS |
9453 | &remote_protocol_packets[PACKET_qXfer_memory_map]); |
9454 | ||
9455 | case TARGET_OBJECT_OSDATA: | |
9456 | /* Should only get here if we're connected. */ | |
25e4902b | 9457 | gdb_assert (rs->remote_desc); |
5796c8dc | 9458 | return remote_read_qxfer |
25e4902b | 9459 | (ops, "osdata", annex, readbuf, offset, len, xfered_len, |
5796c8dc SS |
9460 | &remote_protocol_packets[PACKET_qXfer_osdata]); |
9461 | ||
cf7f2e2d JM |
9462 | case TARGET_OBJECT_THREADS: |
9463 | gdb_assert (annex == NULL); | |
9464 | return remote_read_qxfer (ops, "threads", annex, readbuf, offset, len, | |
25e4902b | 9465 | xfered_len, |
cf7f2e2d JM |
9466 | &remote_protocol_packets[PACKET_qXfer_threads]); |
9467 | ||
c50c785c JM |
9468 | case TARGET_OBJECT_TRACEFRAME_INFO: |
9469 | gdb_assert (annex == NULL); | |
9470 | return remote_read_qxfer | |
25e4902b | 9471 | (ops, "traceframe-info", annex, readbuf, offset, len, xfered_len, |
c50c785c | 9472 | &remote_protocol_packets[PACKET_qXfer_traceframe_info]); |
a45ae5f8 JM |
9473 | |
9474 | case TARGET_OBJECT_FDPIC: | |
9475 | return remote_read_qxfer (ops, "fdpic", annex, readbuf, offset, len, | |
25e4902b | 9476 | xfered_len, |
a45ae5f8 | 9477 | &remote_protocol_packets[PACKET_qXfer_fdpic]); |
ef5ccd6c JM |
9478 | |
9479 | case TARGET_OBJECT_OPENVMS_UIB: | |
9480 | return remote_read_qxfer (ops, "uib", annex, readbuf, offset, len, | |
25e4902b | 9481 | xfered_len, |
ef5ccd6c JM |
9482 | &remote_protocol_packets[PACKET_qXfer_uib]); |
9483 | ||
9484 | case TARGET_OBJECT_BTRACE: | |
9485 | return remote_read_qxfer (ops, "btrace", annex, readbuf, offset, len, | |
25e4902b | 9486 | xfered_len, |
ef5ccd6c JM |
9487 | &remote_protocol_packets[PACKET_qXfer_btrace]); |
9488 | ||
25e4902b AHJ |
9489 | case TARGET_OBJECT_BTRACE_CONF: |
9490 | return remote_read_qxfer (ops, "btrace-conf", annex, readbuf, offset, | |
9491 | len, xfered_len, | |
9492 | &remote_protocol_packets[PACKET_qXfer_btrace_conf]); | |
9493 | ||
9494 | case TARGET_OBJECT_EXEC_FILE: | |
9495 | return remote_read_qxfer (ops, "exec-file", annex, readbuf, offset, | |
9496 | len, xfered_len, | |
9497 | &remote_protocol_packets[PACKET_qXfer_exec_file]); | |
9498 | ||
5796c8dc | 9499 | default: |
25e4902b | 9500 | return TARGET_XFER_E_IO; |
5796c8dc SS |
9501 | } |
9502 | ||
c50c785c | 9503 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not |
5796c8dc SS |
9504 | large enough let the caller deal with it. */ |
9505 | if (len < get_remote_packet_size ()) | |
25e4902b | 9506 | return TARGET_XFER_E_IO; |
5796c8dc SS |
9507 | len = get_remote_packet_size (); |
9508 | ||
9509 | /* Except for querying the minimum buffer size, target must be open. */ | |
25e4902b | 9510 | if (!rs->remote_desc) |
5796c8dc SS |
9511 | error (_("remote query is only available after target open")); |
9512 | ||
9513 | gdb_assert (annex != NULL); | |
9514 | gdb_assert (readbuf != NULL); | |
9515 | ||
9516 | p2 = rs->buf; | |
9517 | *p2++ = 'q'; | |
9518 | *p2++ = query_type; | |
9519 | ||
9520 | /* We used one buffer char for the remote protocol q command and | |
9521 | another for the query type. As the remote protocol encapsulation | |
9522 | uses 4 chars plus one extra in case we are debugging | |
9523 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
9524 | string. */ | |
9525 | i = 0; | |
9526 | while (annex[i] && (i < (get_remote_packet_size () - 8))) | |
9527 | { | |
9528 | /* Bad caller may have sent forbidden characters. */ | |
9529 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
9530 | *p2++ = annex[i]; | |
9531 | i++; | |
9532 | } | |
9533 | *p2 = '\0'; | |
9534 | gdb_assert (annex[i] == '\0'); | |
9535 | ||
9536 | i = putpkt (rs->buf); | |
9537 | if (i < 0) | |
25e4902b | 9538 | return TARGET_XFER_E_IO; |
5796c8dc SS |
9539 | |
9540 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9541 | strcpy ((char *) readbuf, rs->buf); | |
9542 | ||
25e4902b AHJ |
9543 | *xfered_len = strlen ((char *) readbuf); |
9544 | return TARGET_XFER_OK; | |
5796c8dc SS |
9545 | } |
9546 | ||
9547 | static int | |
9548 | remote_search_memory (struct target_ops* ops, | |
9549 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
9550 | const gdb_byte *pattern, ULONGEST pattern_len, | |
9551 | CORE_ADDR *found_addrp) | |
9552 | { | |
ef5ccd6c | 9553 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
5796c8dc SS |
9554 | struct remote_state *rs = get_remote_state (); |
9555 | int max_size = get_memory_write_packet_size (); | |
9556 | struct packet_config *packet = | |
9557 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
c50c785c JM |
9558 | /* Number of packet bytes used to encode the pattern; |
9559 | this could be more than PATTERN_LEN due to escape characters. */ | |
5796c8dc | 9560 | int escaped_pattern_len; |
c50c785c | 9561 | /* Amount of pattern that was encodable in the packet. */ |
5796c8dc SS |
9562 | int used_pattern_len; |
9563 | int i; | |
9564 | int found; | |
9565 | ULONGEST found_addr; | |
9566 | ||
9567 | /* Don't go to the target if we don't have to. | |
9568 | This is done before checking packet->support to avoid the possibility that | |
9569 | a success for this edge case means the facility works in general. */ | |
9570 | if (pattern_len > search_space_len) | |
9571 | return 0; | |
9572 | if (pattern_len == 0) | |
9573 | { | |
9574 | *found_addrp = start_addr; | |
9575 | return 1; | |
9576 | } | |
9577 | ||
9578 | /* If we already know the packet isn't supported, fall back to the simple | |
9579 | way of searching memory. */ | |
9580 | ||
25e4902b | 9581 | if (packet_config_support (packet) == PACKET_DISABLE) |
5796c8dc SS |
9582 | { |
9583 | /* Target doesn't provided special support, fall back and use the | |
9584 | standard support (copy memory and do the search here). */ | |
9585 | return simple_search_memory (ops, start_addr, search_space_len, | |
9586 | pattern, pattern_len, found_addrp); | |
9587 | } | |
9588 | ||
25e4902b AHJ |
9589 | /* Make sure the remote is pointing at the right process. */ |
9590 | set_general_process (); | |
9591 | ||
5796c8dc SS |
9592 | /* Insert header. */ |
9593 | i = snprintf (rs->buf, max_size, | |
9594 | "qSearch:memory:%s;%s;", | |
9595 | phex_nz (start_addr, addr_size), | |
9596 | phex_nz (search_space_len, sizeof (search_space_len))); | |
9597 | max_size -= (i + 1); | |
9598 | ||
9599 | /* Escape as much data as fits into rs->buf. */ | |
9600 | escaped_pattern_len = | |
25e4902b | 9601 | remote_escape_output (pattern, pattern_len, 1, (gdb_byte *) rs->buf + i, |
5796c8dc SS |
9602 | &used_pattern_len, max_size); |
9603 | ||
9604 | /* Bail if the pattern is too large. */ | |
9605 | if (used_pattern_len != pattern_len) | |
c50c785c | 9606 | error (_("Pattern is too large to transmit to remote target.")); |
5796c8dc SS |
9607 | |
9608 | if (putpkt_binary (rs->buf, i + escaped_pattern_len) < 0 | |
9609 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
9610 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
9611 | { | |
9612 | /* The request may not have worked because the command is not | |
9613 | supported. If so, fall back to the simple way. */ | |
9614 | if (packet->support == PACKET_DISABLE) | |
9615 | { | |
9616 | return simple_search_memory (ops, start_addr, search_space_len, | |
9617 | pattern, pattern_len, found_addrp); | |
9618 | } | |
9619 | return -1; | |
9620 | } | |
9621 | ||
9622 | if (rs->buf[0] == '0') | |
9623 | found = 0; | |
9624 | else if (rs->buf[0] == '1') | |
9625 | { | |
9626 | found = 1; | |
9627 | if (rs->buf[1] != ',') | |
9628 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); | |
9629 | unpack_varlen_hex (rs->buf + 2, &found_addr); | |
9630 | *found_addrp = found_addr; | |
9631 | } | |
9632 | else | |
9633 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); | |
9634 | ||
9635 | return found; | |
9636 | } | |
9637 | ||
9638 | static void | |
25e4902b | 9639 | remote_rcmd (struct target_ops *self, const char *command, |
5796c8dc SS |
9640 | struct ui_file *outbuf) |
9641 | { | |
9642 | struct remote_state *rs = get_remote_state (); | |
9643 | char *p = rs->buf; | |
9644 | ||
25e4902b | 9645 | if (!rs->remote_desc) |
5796c8dc SS |
9646 | error (_("remote rcmd is only available after target open")); |
9647 | ||
9648 | /* Send a NULL command across as an empty command. */ | |
9649 | if (command == NULL) | |
9650 | command = ""; | |
9651 | ||
9652 | /* The query prefix. */ | |
9653 | strcpy (rs->buf, "qRcmd,"); | |
9654 | p = strchr (rs->buf, '\0'); | |
9655 | ||
c50c785c JM |
9656 | if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/) |
9657 | > get_remote_packet_size ()) | |
5796c8dc SS |
9658 | error (_("\"monitor\" command ``%s'' is too long."), command); |
9659 | ||
9660 | /* Encode the actual command. */ | |
25e4902b | 9661 | bin2hex ((const gdb_byte *) command, p, strlen (command)); |
5796c8dc SS |
9662 | |
9663 | if (putpkt (rs->buf) < 0) | |
9664 | error (_("Communication problem with target.")); | |
9665 | ||
9666 | /* get/display the response */ | |
9667 | while (1) | |
9668 | { | |
9669 | char *buf; | |
9670 | ||
cf7f2e2d | 9671 | /* XXX - see also remote_get_noisy_reply(). */ |
ef5ccd6c | 9672 | QUIT; /* Allow user to bail out with ^C. */ |
5796c8dc | 9673 | rs->buf[0] = '\0'; |
ef5ccd6c JM |
9674 | if (getpkt_sane (&rs->buf, &rs->buf_size, 0) == -1) |
9675 | { | |
9676 | /* Timeout. Continue to (try to) read responses. | |
9677 | This is better than stopping with an error, assuming the stub | |
9678 | is still executing the (long) monitor command. | |
9679 | If needed, the user can interrupt gdb using C-c, obtaining | |
9680 | an effect similar to stop on timeout. */ | |
9681 | continue; | |
9682 | } | |
5796c8dc SS |
9683 | buf = rs->buf; |
9684 | if (buf[0] == '\0') | |
9685 | error (_("Target does not support this command.")); | |
9686 | if (buf[0] == 'O' && buf[1] != 'K') | |
9687 | { | |
9688 | remote_console_output (buf + 1); /* 'O' message from stub. */ | |
9689 | continue; | |
9690 | } | |
9691 | if (strcmp (buf, "OK") == 0) | |
9692 | break; | |
9693 | if (strlen (buf) == 3 && buf[0] == 'E' | |
9694 | && isdigit (buf[1]) && isdigit (buf[2])) | |
9695 | { | |
9696 | error (_("Protocol error with Rcmd")); | |
9697 | } | |
9698 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) | |
9699 | { | |
9700 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
cf7f2e2d | 9701 | |
5796c8dc SS |
9702 | fputc_unfiltered (c, outbuf); |
9703 | } | |
9704 | break; | |
9705 | } | |
9706 | } | |
9707 | ||
9708 | static VEC(mem_region_s) * | |
9709 | remote_memory_map (struct target_ops *ops) | |
9710 | { | |
9711 | VEC(mem_region_s) *result = NULL; | |
9712 | char *text = target_read_stralloc (¤t_target, | |
9713 | TARGET_OBJECT_MEMORY_MAP, NULL); | |
9714 | ||
9715 | if (text) | |
9716 | { | |
9717 | struct cleanup *back_to = make_cleanup (xfree, text); | |
cf7f2e2d | 9718 | |
5796c8dc SS |
9719 | result = parse_memory_map (text); |
9720 | do_cleanups (back_to); | |
9721 | } | |
9722 | ||
9723 | return result; | |
9724 | } | |
9725 | ||
9726 | static void | |
9727 | packet_command (char *args, int from_tty) | |
9728 | { | |
9729 | struct remote_state *rs = get_remote_state (); | |
9730 | ||
25e4902b | 9731 | if (!rs->remote_desc) |
5796c8dc SS |
9732 | error (_("command can only be used with remote target")); |
9733 | ||
9734 | if (!args) | |
9735 | error (_("remote-packet command requires packet text as argument")); | |
9736 | ||
9737 | puts_filtered ("sending: "); | |
9738 | print_packet (args); | |
9739 | puts_filtered ("\n"); | |
9740 | putpkt (args); | |
9741 | ||
9742 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9743 | puts_filtered ("received: "); | |
9744 | print_packet (rs->buf); | |
9745 | puts_filtered ("\n"); | |
9746 | } | |
9747 | ||
9748 | #if 0 | |
9749 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ | |
9750 | ||
9751 | static void display_thread_info (struct gdb_ext_thread_info *info); | |
9752 | ||
9753 | static void threadset_test_cmd (char *cmd, int tty); | |
9754 | ||
9755 | static void threadalive_test (char *cmd, int tty); | |
9756 | ||
9757 | static void threadlist_test_cmd (char *cmd, int tty); | |
9758 | ||
9759 | int get_and_display_threadinfo (threadref *ref); | |
9760 | ||
9761 | static void threadinfo_test_cmd (char *cmd, int tty); | |
9762 | ||
9763 | static int thread_display_step (threadref *ref, void *context); | |
9764 | ||
9765 | static void threadlist_update_test_cmd (char *cmd, int tty); | |
9766 | ||
9767 | static void init_remote_threadtests (void); | |
9768 | ||
9769 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ | |
9770 | ||
9771 | static void | |
9772 | threadset_test_cmd (char *cmd, int tty) | |
9773 | { | |
9774 | int sample_thread = SAMPLE_THREAD; | |
9775 | ||
9776 | printf_filtered (_("Remote threadset test\n")); | |
9777 | set_general_thread (sample_thread); | |
9778 | } | |
9779 | ||
9780 | ||
9781 | static void | |
9782 | threadalive_test (char *cmd, int tty) | |
9783 | { | |
9784 | int sample_thread = SAMPLE_THREAD; | |
9785 | int pid = ptid_get_pid (inferior_ptid); | |
25e4902b | 9786 | ptid_t ptid = ptid_build (pid, sample_thread, 0); |
5796c8dc SS |
9787 | |
9788 | if (remote_thread_alive (ptid)) | |
9789 | printf_filtered ("PASS: Thread alive test\n"); | |
9790 | else | |
9791 | printf_filtered ("FAIL: Thread alive test\n"); | |
9792 | } | |
9793 | ||
9794 | void output_threadid (char *title, threadref *ref); | |
9795 | ||
9796 | void | |
9797 | output_threadid (char *title, threadref *ref) | |
9798 | { | |
9799 | char hexid[20]; | |
9800 | ||
9801 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ | |
9802 | hexid[16] = 0; | |
9803 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
9804 | } | |
9805 | ||
9806 | static void | |
9807 | threadlist_test_cmd (char *cmd, int tty) | |
9808 | { | |
9809 | int startflag = 1; | |
9810 | threadref nextthread; | |
9811 | int done, result_count; | |
9812 | threadref threadlist[3]; | |
9813 | ||
9814 | printf_filtered ("Remote Threadlist test\n"); | |
9815 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
9816 | &result_count, &threadlist[0])) | |
9817 | printf_filtered ("FAIL: threadlist test\n"); | |
9818 | else | |
9819 | { | |
9820 | threadref *scan = threadlist; | |
9821 | threadref *limit = scan + result_count; | |
9822 | ||
9823 | while (scan < limit) | |
9824 | output_threadid (" thread ", scan++); | |
9825 | } | |
9826 | } | |
9827 | ||
9828 | void | |
9829 | display_thread_info (struct gdb_ext_thread_info *info) | |
9830 | { | |
9831 | output_threadid ("Threadid: ", &info->threadid); | |
9832 | printf_filtered ("Name: %s\n ", info->shortname); | |
9833 | printf_filtered ("State: %s\n", info->display); | |
9834 | printf_filtered ("other: %s\n\n", info->more_display); | |
9835 | } | |
9836 | ||
9837 | int | |
9838 | get_and_display_threadinfo (threadref *ref) | |
9839 | { | |
9840 | int result; | |
9841 | int set; | |
9842 | struct gdb_ext_thread_info threadinfo; | |
9843 | ||
9844 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
9845 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
9846 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
9847 | display_thread_info (&threadinfo); | |
9848 | return result; | |
9849 | } | |
9850 | ||
9851 | static void | |
9852 | threadinfo_test_cmd (char *cmd, int tty) | |
9853 | { | |
9854 | int athread = SAMPLE_THREAD; | |
9855 | threadref thread; | |
9856 | int set; | |
9857 | ||
9858 | int_to_threadref (&thread, athread); | |
9859 | printf_filtered ("Remote Threadinfo test\n"); | |
9860 | if (!get_and_display_threadinfo (&thread)) | |
9861 | printf_filtered ("FAIL cannot get thread info\n"); | |
9862 | } | |
9863 | ||
9864 | static int | |
9865 | thread_display_step (threadref *ref, void *context) | |
9866 | { | |
9867 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
9868 | return get_and_display_threadinfo (ref); | |
9869 | } | |
9870 | ||
9871 | static void | |
9872 | threadlist_update_test_cmd (char *cmd, int tty) | |
9873 | { | |
9874 | printf_filtered ("Remote Threadlist update test\n"); | |
9875 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
9876 | } | |
9877 | ||
9878 | static void | |
9879 | init_remote_threadtests (void) | |
9880 | { | |
c50c785c JM |
9881 | add_com ("tlist", class_obscure, threadlist_test_cmd, |
9882 | _("Fetch and print the remote list of " | |
9883 | "thread identifiers, one pkt only")); | |
5796c8dc SS |
9884 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
9885 | _("Fetch and display info about one thread")); | |
9886 | add_com ("tset", class_obscure, threadset_test_cmd, | |
9887 | _("Test setting to a different thread")); | |
9888 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, | |
9889 | _("Iterate through updating all remote thread info")); | |
9890 | add_com ("talive", class_obscure, threadalive_test, | |
9891 | _(" Remote thread alive test ")); | |
9892 | } | |
9893 | ||
9894 | #endif /* 0 */ | |
9895 | ||
9896 | /* Convert a thread ID to a string. Returns the string in a static | |
9897 | buffer. */ | |
9898 | ||
9899 | static char * | |
9900 | remote_pid_to_str (struct target_ops *ops, ptid_t ptid) | |
9901 | { | |
9902 | static char buf[64]; | |
9903 | struct remote_state *rs = get_remote_state (); | |
9904 | ||
ef5ccd6c JM |
9905 | if (ptid_equal (ptid, null_ptid)) |
9906 | return normal_pid_to_str (ptid); | |
9907 | else if (ptid_is_pid (ptid)) | |
5796c8dc SS |
9908 | { |
9909 | /* Printing an inferior target id. */ | |
9910 | ||
9911 | /* When multi-process extensions are off, there's no way in the | |
9912 | remote protocol to know the remote process id, if there's any | |
9913 | at all. There's one exception --- when we're connected with | |
9914 | target extended-remote, and we manually attached to a process | |
9915 | with "attach PID". We don't record anywhere a flag that | |
9916 | allows us to distinguish that case from the case of | |
9917 | connecting with extended-remote and the stub already being | |
9918 | attached to a process, and reporting yes to qAttached, hence | |
9919 | no smart special casing here. */ | |
9920 | if (!remote_multi_process_p (rs)) | |
9921 | { | |
9922 | xsnprintf (buf, sizeof buf, "Remote target"); | |
9923 | return buf; | |
9924 | } | |
9925 | ||
9926 | return normal_pid_to_str (ptid); | |
9927 | } | |
9928 | else | |
9929 | { | |
9930 | if (ptid_equal (magic_null_ptid, ptid)) | |
9931 | xsnprintf (buf, sizeof buf, "Thread <main>"); | |
ef5ccd6c | 9932 | else if (rs->extended && remote_multi_process_p (rs)) |
25e4902b AHJ |
9933 | if (ptid_get_lwp (ptid) == 0) |
9934 | return normal_pid_to_str (ptid); | |
9935 | else | |
9936 | xsnprintf (buf, sizeof buf, "Thread %d.%ld", | |
9937 | ptid_get_pid (ptid), ptid_get_lwp (ptid)); | |
5796c8dc SS |
9938 | else |
9939 | xsnprintf (buf, sizeof buf, "Thread %ld", | |
25e4902b | 9940 | ptid_get_lwp (ptid)); |
5796c8dc SS |
9941 | return buf; |
9942 | } | |
9943 | } | |
9944 | ||
9945 | /* Get the address of the thread local variable in OBJFILE which is | |
9946 | stored at OFFSET within the thread local storage for thread PTID. */ | |
9947 | ||
9948 | static CORE_ADDR | |
9949 | remote_get_thread_local_address (struct target_ops *ops, | |
9950 | ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
9951 | { | |
25e4902b | 9952 | if (packet_support (PACKET_qGetTLSAddr) != PACKET_DISABLE) |
5796c8dc SS |
9953 | { |
9954 | struct remote_state *rs = get_remote_state (); | |
9955 | char *p = rs->buf; | |
9956 | char *endp = rs->buf + get_remote_packet_size (); | |
9957 | enum packet_result result; | |
9958 | ||
9959 | strcpy (p, "qGetTLSAddr:"); | |
9960 | p += strlen (p); | |
9961 | p = write_ptid (p, endp, ptid); | |
9962 | *p++ = ','; | |
9963 | p += hexnumstr (p, offset); | |
9964 | *p++ = ','; | |
9965 | p += hexnumstr (p, lm); | |
9966 | *p++ = '\0'; | |
9967 | ||
9968 | putpkt (rs->buf); | |
9969 | getpkt (&rs->buf, &rs->buf_size, 0); | |
c50c785c JM |
9970 | result = packet_ok (rs->buf, |
9971 | &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
5796c8dc SS |
9972 | if (result == PACKET_OK) |
9973 | { | |
9974 | ULONGEST result; | |
9975 | ||
9976 | unpack_varlen_hex (rs->buf, &result); | |
9977 | return result; | |
9978 | } | |
9979 | else if (result == PACKET_UNKNOWN) | |
9980 | throw_error (TLS_GENERIC_ERROR, | |
9981 | _("Remote target doesn't support qGetTLSAddr packet")); | |
9982 | else | |
9983 | throw_error (TLS_GENERIC_ERROR, | |
9984 | _("Remote target failed to process qGetTLSAddr request")); | |
9985 | } | |
9986 | else | |
9987 | throw_error (TLS_GENERIC_ERROR, | |
9988 | _("TLS not supported or disabled on this target")); | |
9989 | /* Not reached. */ | |
9990 | return 0; | |
9991 | } | |
9992 | ||
cf7f2e2d JM |
9993 | /* Provide thread local base, i.e. Thread Information Block address. |
9994 | Returns 1 if ptid is found and thread_local_base is non zero. */ | |
9995 | ||
ef5ccd6c | 9996 | static int |
25e4902b | 9997 | remote_get_tib_address (struct target_ops *self, ptid_t ptid, CORE_ADDR *addr) |
cf7f2e2d | 9998 | { |
25e4902b | 9999 | if (packet_support (PACKET_qGetTIBAddr) != PACKET_DISABLE) |
cf7f2e2d JM |
10000 | { |
10001 | struct remote_state *rs = get_remote_state (); | |
10002 | char *p = rs->buf; | |
10003 | char *endp = rs->buf + get_remote_packet_size (); | |
10004 | enum packet_result result; | |
10005 | ||
10006 | strcpy (p, "qGetTIBAddr:"); | |
10007 | p += strlen (p); | |
10008 | p = write_ptid (p, endp, ptid); | |
10009 | *p++ = '\0'; | |
10010 | ||
10011 | putpkt (rs->buf); | |
10012 | getpkt (&rs->buf, &rs->buf_size, 0); | |
10013 | result = packet_ok (rs->buf, | |
10014 | &remote_protocol_packets[PACKET_qGetTIBAddr]); | |
10015 | if (result == PACKET_OK) | |
10016 | { | |
10017 | ULONGEST result; | |
10018 | ||
10019 | unpack_varlen_hex (rs->buf, &result); | |
10020 | if (addr) | |
10021 | *addr = (CORE_ADDR) result; | |
10022 | return 1; | |
10023 | } | |
10024 | else if (result == PACKET_UNKNOWN) | |
10025 | error (_("Remote target doesn't support qGetTIBAddr packet")); | |
10026 | else | |
10027 | error (_("Remote target failed to process qGetTIBAddr request")); | |
10028 | } | |
10029 | else | |
10030 | error (_("qGetTIBAddr not supported or disabled on this target")); | |
10031 | /* Not reached. */ | |
10032 | return 0; | |
10033 | } | |
10034 | ||
5796c8dc SS |
10035 | /* Support for inferring a target description based on the current |
10036 | architecture and the size of a 'g' packet. While the 'g' packet | |
10037 | can have any size (since optional registers can be left off the | |
10038 | end), some sizes are easily recognizable given knowledge of the | |
10039 | approximate architecture. */ | |
10040 | ||
10041 | struct remote_g_packet_guess | |
10042 | { | |
10043 | int bytes; | |
10044 | const struct target_desc *tdesc; | |
10045 | }; | |
10046 | typedef struct remote_g_packet_guess remote_g_packet_guess_s; | |
10047 | DEF_VEC_O(remote_g_packet_guess_s); | |
10048 | ||
10049 | struct remote_g_packet_data | |
10050 | { | |
10051 | VEC(remote_g_packet_guess_s) *guesses; | |
10052 | }; | |
10053 | ||
10054 | static struct gdbarch_data *remote_g_packet_data_handle; | |
10055 | ||
10056 | static void * | |
10057 | remote_g_packet_data_init (struct obstack *obstack) | |
10058 | { | |
10059 | return OBSTACK_ZALLOC (obstack, struct remote_g_packet_data); | |
10060 | } | |
10061 | ||
10062 | void | |
10063 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
10064 | const struct target_desc *tdesc) | |
10065 | { | |
10066 | struct remote_g_packet_data *data | |
10067 | = gdbarch_data (gdbarch, remote_g_packet_data_handle); | |
10068 | struct remote_g_packet_guess new_guess, *guess; | |
10069 | int ix; | |
10070 | ||
10071 | gdb_assert (tdesc != NULL); | |
10072 | ||
10073 | for (ix = 0; | |
10074 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
10075 | ix++) | |
10076 | if (guess->bytes == bytes) | |
10077 | internal_error (__FILE__, __LINE__, | |
c50c785c | 10078 | _("Duplicate g packet description added for size %d"), |
5796c8dc SS |
10079 | bytes); |
10080 | ||
10081 | new_guess.bytes = bytes; | |
10082 | new_guess.tdesc = tdesc; | |
10083 | VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess); | |
10084 | } | |
10085 | ||
10086 | /* Return 1 if remote_read_description would do anything on this target | |
10087 | and architecture, 0 otherwise. */ | |
10088 | ||
10089 | static int | |
10090 | remote_read_description_p (struct target_ops *target) | |
10091 | { | |
10092 | struct remote_g_packet_data *data | |
ef5ccd6c | 10093 | = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle); |
5796c8dc SS |
10094 | |
10095 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) | |
10096 | return 1; | |
10097 | ||
10098 | return 0; | |
10099 | } | |
10100 | ||
10101 | static const struct target_desc * | |
10102 | remote_read_description (struct target_ops *target) | |
10103 | { | |
10104 | struct remote_g_packet_data *data | |
ef5ccd6c | 10105 | = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle); |
5796c8dc SS |
10106 | |
10107 | /* Do not try this during initial connection, when we do not know | |
10108 | whether there is a running but stopped thread. */ | |
10109 | if (!target_has_execution || ptid_equal (inferior_ptid, null_ptid)) | |
25e4902b | 10110 | return target->beneath->to_read_description (target->beneath); |
5796c8dc SS |
10111 | |
10112 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) | |
10113 | { | |
10114 | struct remote_g_packet_guess *guess; | |
10115 | int ix; | |
10116 | int bytes = send_g_packet (); | |
10117 | ||
10118 | for (ix = 0; | |
10119 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
10120 | ix++) | |
10121 | if (guess->bytes == bytes) | |
10122 | return guess->tdesc; | |
10123 | ||
10124 | /* We discard the g packet. A minor optimization would be to | |
10125 | hold on to it, and fill the register cache once we have selected | |
10126 | an architecture, but it's too tricky to do safely. */ | |
10127 | } | |
10128 | ||
25e4902b | 10129 | return target->beneath->to_read_description (target->beneath); |
5796c8dc SS |
10130 | } |
10131 | ||
10132 | /* Remote file transfer support. This is host-initiated I/O, not | |
10133 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
10134 | ||
10135 | /* If *LEFT is at least the length of STRING, copy STRING to | |
10136 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
10137 | decrease *LEFT. Otherwise raise an error. */ | |
10138 | ||
10139 | static void | |
10140 | remote_buffer_add_string (char **buffer, int *left, char *string) | |
10141 | { | |
10142 | int len = strlen (string); | |
10143 | ||
10144 | if (len > *left) | |
10145 | error (_("Packet too long for target.")); | |
10146 | ||
10147 | memcpy (*buffer, string, len); | |
10148 | *buffer += len; | |
10149 | *left -= len; | |
10150 | ||
10151 | /* NUL-terminate the buffer as a convenience, if there is | |
10152 | room. */ | |
10153 | if (*left) | |
10154 | **buffer = '\0'; | |
10155 | } | |
10156 | ||
10157 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
10158 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
10159 | decrease *LEFT. Otherwise raise an error. */ | |
10160 | ||
10161 | static void | |
10162 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
10163 | int len) | |
10164 | { | |
10165 | if (2 * len > *left) | |
10166 | error (_("Packet too long for target.")); | |
10167 | ||
10168 | bin2hex (bytes, *buffer, len); | |
10169 | *buffer += 2 * len; | |
10170 | *left -= 2 * len; | |
10171 | ||
10172 | /* NUL-terminate the buffer as a convenience, if there is | |
10173 | room. */ | |
10174 | if (*left) | |
10175 | **buffer = '\0'; | |
10176 | } | |
10177 | ||
10178 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
10179 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
10180 | decrease *LEFT. Otherwise raise an error. */ | |
10181 | ||
10182 | static void | |
10183 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
10184 | { | |
10185 | int len = hexnumlen (value); | |
10186 | ||
10187 | if (len > *left) | |
10188 | error (_("Packet too long for target.")); | |
10189 | ||
10190 | hexnumstr (*buffer, value); | |
10191 | *buffer += len; | |
10192 | *left -= len; | |
10193 | ||
10194 | /* NUL-terminate the buffer as a convenience, if there is | |
10195 | room. */ | |
10196 | if (*left) | |
10197 | **buffer = '\0'; | |
10198 | } | |
10199 | ||
10200 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
10201 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
10202 | was included, and *ATTACHMENT to point to the start of the annex | |
10203 | if any. The length of the packet isn't needed here; there may | |
10204 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
10205 | ||
10206 | Return 0 if the packet could be parsed, -1 if it could not. If | |
10207 | -1 is returned, the other variables may not be initialized. */ | |
10208 | ||
10209 | static int | |
10210 | remote_hostio_parse_result (char *buffer, int *retcode, | |
10211 | int *remote_errno, char **attachment) | |
10212 | { | |
10213 | char *p, *p2; | |
10214 | ||
10215 | *remote_errno = 0; | |
10216 | *attachment = NULL; | |
10217 | ||
10218 | if (buffer[0] != 'F') | |
10219 | return -1; | |
10220 | ||
10221 | errno = 0; | |
10222 | *retcode = strtol (&buffer[1], &p, 16); | |
10223 | if (errno != 0 || p == &buffer[1]) | |
10224 | return -1; | |
10225 | ||
10226 | /* Check for ",errno". */ | |
10227 | if (*p == ',') | |
10228 | { | |
10229 | errno = 0; | |
10230 | *remote_errno = strtol (p + 1, &p2, 16); | |
10231 | if (errno != 0 || p + 1 == p2) | |
10232 | return -1; | |
10233 | p = p2; | |
10234 | } | |
10235 | ||
10236 | /* Check for ";attachment". If there is no attachment, the | |
10237 | packet should end here. */ | |
10238 | if (*p == ';') | |
10239 | { | |
10240 | *attachment = p + 1; | |
10241 | return 0; | |
10242 | } | |
10243 | else if (*p == '\0') | |
10244 | return 0; | |
10245 | else | |
10246 | return -1; | |
10247 | } | |
10248 | ||
10249 | /* Send a prepared I/O packet to the target and read its response. | |
10250 | The prepared packet is in the global RS->BUF before this function | |
10251 | is called, and the answer is there when we return. | |
10252 | ||
10253 | COMMAND_BYTES is the length of the request to send, which may include | |
10254 | binary data. WHICH_PACKET is the packet configuration to check | |
10255 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
10256 | is set to the error number and -1 is returned. Otherwise the value | |
10257 | returned by the function is returned. | |
10258 | ||
10259 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
10260 | attachment is expected; an error will be reported if there's a | |
10261 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
10262 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
10263 | attachment's length. */ | |
10264 | ||
10265 | static int | |
10266 | remote_hostio_send_command (int command_bytes, int which_packet, | |
10267 | int *remote_errno, char **attachment, | |
10268 | int *attachment_len) | |
10269 | { | |
10270 | struct remote_state *rs = get_remote_state (); | |
10271 | int ret, bytes_read; | |
10272 | char *attachment_tmp; | |
10273 | ||
25e4902b AHJ |
10274 | if (!rs->remote_desc |
10275 | || packet_support (which_packet) == PACKET_DISABLE) | |
5796c8dc SS |
10276 | { |
10277 | *remote_errno = FILEIO_ENOSYS; | |
10278 | return -1; | |
10279 | } | |
10280 | ||
10281 | putpkt_binary (rs->buf, command_bytes); | |
10282 | bytes_read = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
10283 | ||
10284 | /* If it timed out, something is wrong. Don't try to parse the | |
10285 | buffer. */ | |
10286 | if (bytes_read < 0) | |
10287 | { | |
10288 | *remote_errno = FILEIO_EINVAL; | |
10289 | return -1; | |
10290 | } | |
10291 | ||
10292 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
10293 | { | |
10294 | case PACKET_ERROR: | |
10295 | *remote_errno = FILEIO_EINVAL; | |
10296 | return -1; | |
10297 | case PACKET_UNKNOWN: | |
10298 | *remote_errno = FILEIO_ENOSYS; | |
10299 | return -1; | |
10300 | case PACKET_OK: | |
10301 | break; | |
10302 | } | |
10303 | ||
10304 | if (remote_hostio_parse_result (rs->buf, &ret, remote_errno, | |
10305 | &attachment_tmp)) | |
10306 | { | |
10307 | *remote_errno = FILEIO_EINVAL; | |
10308 | return -1; | |
10309 | } | |
10310 | ||
10311 | /* Make sure we saw an attachment if and only if we expected one. */ | |
10312 | if ((attachment_tmp == NULL && attachment != NULL) | |
10313 | || (attachment_tmp != NULL && attachment == NULL)) | |
10314 | { | |
10315 | *remote_errno = FILEIO_EINVAL; | |
10316 | return -1; | |
10317 | } | |
10318 | ||
10319 | /* If an attachment was found, it must point into the packet buffer; | |
10320 | work out how many bytes there were. */ | |
10321 | if (attachment_tmp != NULL) | |
10322 | { | |
10323 | *attachment = attachment_tmp; | |
10324 | *attachment_len = bytes_read - (*attachment - rs->buf); | |
10325 | } | |
10326 | ||
10327 | return ret; | |
10328 | } | |
10329 | ||
25e4902b AHJ |
10330 | /* Invalidate the readahead cache. */ |
10331 | ||
10332 | static void | |
10333 | readahead_cache_invalidate (void) | |
10334 | { | |
10335 | struct remote_state *rs = get_remote_state (); | |
10336 | ||
10337 | rs->readahead_cache.fd = -1; | |
10338 | } | |
10339 | ||
10340 | /* Invalidate the readahead cache if it is holding data for FD. */ | |
10341 | ||
10342 | static void | |
10343 | readahead_cache_invalidate_fd (int fd) | |
10344 | { | |
10345 | struct remote_state *rs = get_remote_state (); | |
10346 | ||
10347 | if (rs->readahead_cache.fd == fd) | |
10348 | rs->readahead_cache.fd = -1; | |
10349 | } | |
10350 | ||
10351 | /* Set the filesystem remote_hostio functions that take FILENAME | |
10352 | arguments will use. Return 0 on success, or -1 if an error | |
10353 | occurs (and set *REMOTE_ERRNO). */ | |
10354 | ||
10355 | static int | |
10356 | remote_hostio_set_filesystem (struct inferior *inf, int *remote_errno) | |
10357 | { | |
10358 | struct remote_state *rs = get_remote_state (); | |
10359 | int required_pid = (inf == NULL || inf->fake_pid_p) ? 0 : inf->pid; | |
10360 | char *p = rs->buf; | |
10361 | int left = get_remote_packet_size () - 1; | |
10362 | char arg[9]; | |
10363 | int ret; | |
10364 | ||
10365 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
10366 | return 0; | |
10367 | ||
10368 | if (rs->fs_pid != -1 && required_pid == rs->fs_pid) | |
10369 | return 0; | |
10370 | ||
10371 | remote_buffer_add_string (&p, &left, "vFile:setfs:"); | |
10372 | ||
10373 | xsnprintf (arg, sizeof (arg), "%x", required_pid); | |
10374 | remote_buffer_add_string (&p, &left, arg); | |
10375 | ||
10376 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_setfs, | |
10377 | remote_errno, NULL, NULL); | |
10378 | ||
10379 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
10380 | return 0; | |
10381 | ||
10382 | if (ret == 0) | |
10383 | rs->fs_pid = required_pid; | |
10384 | ||
10385 | return ret; | |
10386 | } | |
10387 | ||
10388 | /* Implementation of to_fileio_open. */ | |
5796c8dc SS |
10389 | |
10390 | static int | |
25e4902b AHJ |
10391 | remote_hostio_open (struct target_ops *self, |
10392 | struct inferior *inf, const char *filename, | |
10393 | int flags, int mode, int warn_if_slow, | |
5796c8dc SS |
10394 | int *remote_errno) |
10395 | { | |
10396 | struct remote_state *rs = get_remote_state (); | |
10397 | char *p = rs->buf; | |
10398 | int left = get_remote_packet_size () - 1; | |
10399 | ||
25e4902b AHJ |
10400 | if (warn_if_slow) |
10401 | { | |
10402 | static int warning_issued = 0; | |
10403 | ||
10404 | printf_unfiltered (_("Reading %s from remote target...\n"), | |
10405 | filename); | |
10406 | ||
10407 | if (!warning_issued) | |
10408 | { | |
10409 | warning (_("File transfers from remote targets can be slow." | |
10410 | " Use \"set sysroot\" to access files locally" | |
10411 | " instead.")); | |
10412 | warning_issued = 1; | |
10413 | } | |
10414 | } | |
10415 | ||
10416 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) | |
10417 | return -1; | |
10418 | ||
5796c8dc SS |
10419 | remote_buffer_add_string (&p, &left, "vFile:open:"); |
10420 | ||
10421 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
10422 | strlen (filename)); | |
10423 | remote_buffer_add_string (&p, &left, ","); | |
10424 | ||
10425 | remote_buffer_add_int (&p, &left, flags); | |
10426 | remote_buffer_add_string (&p, &left, ","); | |
10427 | ||
10428 | remote_buffer_add_int (&p, &left, mode); | |
10429 | ||
10430 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_open, | |
10431 | remote_errno, NULL, NULL); | |
10432 | } | |
10433 | ||
25e4902b | 10434 | /* Implementation of to_fileio_pwrite. */ |
5796c8dc SS |
10435 | |
10436 | static int | |
25e4902b AHJ |
10437 | remote_hostio_pwrite (struct target_ops *self, |
10438 | int fd, const gdb_byte *write_buf, int len, | |
5796c8dc SS |
10439 | ULONGEST offset, int *remote_errno) |
10440 | { | |
10441 | struct remote_state *rs = get_remote_state (); | |
10442 | char *p = rs->buf; | |
10443 | int left = get_remote_packet_size (); | |
10444 | int out_len; | |
10445 | ||
25e4902b AHJ |
10446 | readahead_cache_invalidate_fd (fd); |
10447 | ||
5796c8dc SS |
10448 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); |
10449 | ||
10450 | remote_buffer_add_int (&p, &left, fd); | |
10451 | remote_buffer_add_string (&p, &left, ","); | |
10452 | ||
10453 | remote_buffer_add_int (&p, &left, offset); | |
10454 | remote_buffer_add_string (&p, &left, ","); | |
10455 | ||
25e4902b | 10456 | p += remote_escape_output (write_buf, len, 1, (gdb_byte *) p, &out_len, |
5796c8dc SS |
10457 | get_remote_packet_size () - (p - rs->buf)); |
10458 | ||
10459 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_pwrite, | |
10460 | remote_errno, NULL, NULL); | |
10461 | } | |
10462 | ||
25e4902b AHJ |
10463 | /* Helper for the implementation of to_fileio_pread. Read the file |
10464 | from the remote side with vFile:pread. */ | |
5796c8dc SS |
10465 | |
10466 | static int | |
25e4902b AHJ |
10467 | remote_hostio_pread_vFile (struct target_ops *self, |
10468 | int fd, gdb_byte *read_buf, int len, | |
10469 | ULONGEST offset, int *remote_errno) | |
5796c8dc SS |
10470 | { |
10471 | struct remote_state *rs = get_remote_state (); | |
10472 | char *p = rs->buf; | |
10473 | char *attachment; | |
10474 | int left = get_remote_packet_size (); | |
10475 | int ret, attachment_len; | |
10476 | int read_len; | |
10477 | ||
10478 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
10479 | ||
10480 | remote_buffer_add_int (&p, &left, fd); | |
10481 | remote_buffer_add_string (&p, &left, ","); | |
10482 | ||
10483 | remote_buffer_add_int (&p, &left, len); | |
10484 | remote_buffer_add_string (&p, &left, ","); | |
10485 | ||
10486 | remote_buffer_add_int (&p, &left, offset); | |
10487 | ||
10488 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_pread, | |
10489 | remote_errno, &attachment, | |
10490 | &attachment_len); | |
10491 | ||
10492 | if (ret < 0) | |
10493 | return ret; | |
10494 | ||
25e4902b | 10495 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
5796c8dc SS |
10496 | read_buf, len); |
10497 | if (read_len != ret) | |
10498 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
10499 | ||
10500 | return ret; | |
10501 | } | |
10502 | ||
25e4902b AHJ |
10503 | /* Serve pread from the readahead cache. Returns number of bytes |
10504 | read, or 0 if the request can't be served from the cache. */ | |
10505 | ||
10506 | static int | |
10507 | remote_hostio_pread_from_cache (struct remote_state *rs, | |
10508 | int fd, gdb_byte *read_buf, size_t len, | |
10509 | ULONGEST offset) | |
10510 | { | |
10511 | struct readahead_cache *cache = &rs->readahead_cache; | |
10512 | ||
10513 | if (cache->fd == fd | |
10514 | && cache->offset <= offset | |
10515 | && offset < cache->offset + cache->bufsize) | |
10516 | { | |
10517 | ULONGEST max = cache->offset + cache->bufsize; | |
10518 | ||
10519 | if (offset + len > max) | |
10520 | len = max - offset; | |
10521 | ||
10522 | memcpy (read_buf, cache->buf + offset - cache->offset, len); | |
10523 | return len; | |
10524 | } | |
10525 | ||
10526 | return 0; | |
10527 | } | |
10528 | ||
10529 | /* Implementation of to_fileio_pread. */ | |
10530 | ||
10531 | static int | |
10532 | remote_hostio_pread (struct target_ops *self, | |
10533 | int fd, gdb_byte *read_buf, int len, | |
10534 | ULONGEST offset, int *remote_errno) | |
10535 | { | |
10536 | int ret; | |
10537 | struct remote_state *rs = get_remote_state (); | |
10538 | struct readahead_cache *cache = &rs->readahead_cache; | |
10539 | ||
10540 | ret = remote_hostio_pread_from_cache (rs, fd, read_buf, len, offset); | |
10541 | if (ret > 0) | |
10542 | { | |
10543 | cache->hit_count++; | |
10544 | ||
10545 | if (remote_debug) | |
10546 | fprintf_unfiltered (gdb_stdlog, "readahead cache hit %s\n", | |
10547 | pulongest (cache->hit_count)); | |
10548 | return ret; | |
10549 | } | |
10550 | ||
10551 | cache->miss_count++; | |
10552 | if (remote_debug) | |
10553 | fprintf_unfiltered (gdb_stdlog, "readahead cache miss %s\n", | |
10554 | pulongest (cache->miss_count)); | |
10555 | ||
10556 | cache->fd = fd; | |
10557 | cache->offset = offset; | |
10558 | cache->bufsize = get_remote_packet_size (); | |
10559 | cache->buf = xrealloc (cache->buf, cache->bufsize); | |
10560 | ||
10561 | ret = remote_hostio_pread_vFile (self, cache->fd, cache->buf, cache->bufsize, | |
10562 | cache->offset, remote_errno); | |
10563 | if (ret <= 0) | |
10564 | { | |
10565 | readahead_cache_invalidate_fd (fd); | |
10566 | return ret; | |
10567 | } | |
10568 | ||
10569 | cache->bufsize = ret; | |
10570 | return remote_hostio_pread_from_cache (rs, fd, read_buf, len, offset); | |
10571 | } | |
10572 | ||
10573 | /* Implementation of to_fileio_close. */ | |
5796c8dc SS |
10574 | |
10575 | static int | |
25e4902b | 10576 | remote_hostio_close (struct target_ops *self, int fd, int *remote_errno) |
5796c8dc SS |
10577 | { |
10578 | struct remote_state *rs = get_remote_state (); | |
10579 | char *p = rs->buf; | |
10580 | int left = get_remote_packet_size () - 1; | |
10581 | ||
25e4902b AHJ |
10582 | readahead_cache_invalidate_fd (fd); |
10583 | ||
5796c8dc SS |
10584 | remote_buffer_add_string (&p, &left, "vFile:close:"); |
10585 | ||
10586 | remote_buffer_add_int (&p, &left, fd); | |
10587 | ||
10588 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_close, | |
10589 | remote_errno, NULL, NULL); | |
10590 | } | |
10591 | ||
25e4902b | 10592 | /* Implementation of to_fileio_unlink. */ |
5796c8dc SS |
10593 | |
10594 | static int | |
25e4902b AHJ |
10595 | remote_hostio_unlink (struct target_ops *self, |
10596 | struct inferior *inf, const char *filename, | |
10597 | int *remote_errno) | |
5796c8dc SS |
10598 | { |
10599 | struct remote_state *rs = get_remote_state (); | |
10600 | char *p = rs->buf; | |
10601 | int left = get_remote_packet_size () - 1; | |
10602 | ||
25e4902b AHJ |
10603 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
10604 | return -1; | |
10605 | ||
5796c8dc SS |
10606 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); |
10607 | ||
10608 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
10609 | strlen (filename)); | |
10610 | ||
10611 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_unlink, | |
10612 | remote_errno, NULL, NULL); | |
10613 | } | |
10614 | ||
25e4902b | 10615 | /* Implementation of to_fileio_readlink. */ |
ef5ccd6c JM |
10616 | |
10617 | static char * | |
25e4902b AHJ |
10618 | remote_hostio_readlink (struct target_ops *self, |
10619 | struct inferior *inf, const char *filename, | |
10620 | int *remote_errno) | |
ef5ccd6c JM |
10621 | { |
10622 | struct remote_state *rs = get_remote_state (); | |
10623 | char *p = rs->buf; | |
10624 | char *attachment; | |
10625 | int left = get_remote_packet_size (); | |
10626 | int len, attachment_len; | |
10627 | int read_len; | |
10628 | char *ret; | |
10629 | ||
25e4902b AHJ |
10630 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
10631 | return NULL; | |
10632 | ||
ef5ccd6c JM |
10633 | remote_buffer_add_string (&p, &left, "vFile:readlink:"); |
10634 | ||
10635 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
10636 | strlen (filename)); | |
10637 | ||
25e4902b AHJ |
10638 | len = remote_hostio_send_command (p - rs->buf, PACKET_vFile_readlink, |
10639 | remote_errno, &attachment, | |
10640 | &attachment_len); | |
10641 | ||
10642 | if (len < 0) | |
10643 | return NULL; | |
10644 | ||
10645 | ret = xmalloc (len + 1); | |
10646 | ||
10647 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, | |
10648 | (gdb_byte *) ret, len); | |
10649 | if (read_len != len) | |
10650 | error (_("Readlink returned %d, but %d bytes."), len, read_len); | |
10651 | ||
10652 | ret[len] = '\0'; | |
10653 | return ret; | |
10654 | } | |
10655 | ||
10656 | /* Implementation of to_fileio_fstat. */ | |
10657 | ||
10658 | static int | |
10659 | remote_hostio_fstat (struct target_ops *self, | |
10660 | int fd, struct stat *st, | |
10661 | int *remote_errno) | |
10662 | { | |
10663 | struct remote_state *rs = get_remote_state (); | |
10664 | char *p = rs->buf; | |
10665 | int left = get_remote_packet_size (); | |
10666 | int attachment_len, ret; | |
10667 | char *attachment; | |
10668 | struct fio_stat fst; | |
10669 | int read_len; | |
10670 | ||
10671 | remote_buffer_add_string (&p, &left, "vFile:fstat:"); | |
10672 | ||
10673 | remote_buffer_add_int (&p, &left, fd); | |
10674 | ||
10675 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_fstat, | |
10676 | remote_errno, &attachment, | |
10677 | &attachment_len); | |
10678 | if (ret < 0) | |
10679 | { | |
10680 | if (*remote_errno != FILEIO_ENOSYS) | |
10681 | return ret; | |
10682 | ||
10683 | /* Strictly we should return -1, ENOSYS here, but when | |
10684 | "set sysroot remote:" was implemented in August 2008 | |
10685 | BFD's need for a stat function was sidestepped with | |
10686 | this hack. This was not remedied until March 2015 | |
10687 | so we retain the previous behavior to avoid breaking | |
10688 | compatibility. | |
10689 | ||
10690 | Note that the memset is a March 2015 addition; older | |
10691 | GDBs set st_size *and nothing else* so the structure | |
10692 | would have garbage in all other fields. This might | |
10693 | break something but retaining the previous behavior | |
10694 | here would be just too wrong. */ | |
10695 | ||
10696 | memset (st, 0, sizeof (struct stat)); | |
10697 | st->st_size = INT_MAX; | |
10698 | return 0; | |
10699 | } | |
10700 | ||
10701 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, | |
10702 | (gdb_byte *) &fst, sizeof (fst)); | |
10703 | ||
10704 | if (read_len != ret) | |
10705 | error (_("vFile:fstat returned %d, but %d bytes."), ret, read_len); | |
10706 | ||
10707 | if (read_len != sizeof (fst)) | |
10708 | error (_("vFile:fstat returned %d bytes, but expecting %d."), | |
10709 | read_len, (int) sizeof (fst)); | |
10710 | ||
10711 | remote_fileio_to_host_stat (&fst, st); | |
10712 | ||
10713 | return 0; | |
10714 | } | |
10715 | ||
10716 | /* Implementation of to_filesystem_is_local. */ | |
10717 | ||
10718 | static int | |
10719 | remote_filesystem_is_local (struct target_ops *self) | |
10720 | { | |
10721 | /* Valgrind GDB presents itself as a remote target but works | |
10722 | on the local filesystem: it does not implement remote get | |
10723 | and users are not expected to set a sysroot. To handle | |
10724 | this case we treat the remote filesystem as local if the | |
10725 | sysroot is exactly TARGET_SYSROOT_PREFIX and if the stub | |
10726 | does not support vFile:open. */ | |
10727 | if (strcmp (gdb_sysroot, TARGET_SYSROOT_PREFIX) == 0) | |
10728 | { | |
10729 | enum packet_support ps = packet_support (PACKET_vFile_open); | |
10730 | ||
10731 | if (ps == PACKET_SUPPORT_UNKNOWN) | |
10732 | { | |
10733 | int fd, remote_errno; | |
10734 | ||
10735 | /* Try opening a file to probe support. The supplied | |
10736 | filename is irrelevant, we only care about whether | |
10737 | the stub recognizes the packet or not. */ | |
10738 | fd = remote_hostio_open (self, NULL, "just probing", | |
10739 | FILEIO_O_RDONLY, 0700, 0, | |
10740 | &remote_errno); | |
10741 | ||
10742 | if (fd >= 0) | |
10743 | remote_hostio_close (self, fd, &remote_errno); | |
ef5ccd6c | 10744 | |
25e4902b AHJ |
10745 | ps = packet_support (PACKET_vFile_open); |
10746 | } | |
ef5ccd6c | 10747 | |
25e4902b AHJ |
10748 | if (ps == PACKET_DISABLE) |
10749 | { | |
10750 | static int warning_issued = 0; | |
ef5ccd6c | 10751 | |
25e4902b AHJ |
10752 | if (!warning_issued) |
10753 | { | |
10754 | warning (_("remote target does not support file" | |
10755 | " transfer, attempting to access files" | |
10756 | " from local filesystem.")); | |
10757 | warning_issued = 1; | |
10758 | } | |
ef5ccd6c | 10759 | |
25e4902b AHJ |
10760 | return 1; |
10761 | } | |
10762 | } | |
10763 | ||
10764 | return 0; | |
ef5ccd6c JM |
10765 | } |
10766 | ||
5796c8dc SS |
10767 | static int |
10768 | remote_fileio_errno_to_host (int errnum) | |
10769 | { | |
10770 | switch (errnum) | |
10771 | { | |
10772 | case FILEIO_EPERM: | |
10773 | return EPERM; | |
10774 | case FILEIO_ENOENT: | |
10775 | return ENOENT; | |
10776 | case FILEIO_EINTR: | |
10777 | return EINTR; | |
10778 | case FILEIO_EIO: | |
10779 | return EIO; | |
10780 | case FILEIO_EBADF: | |
10781 | return EBADF; | |
10782 | case FILEIO_EACCES: | |
10783 | return EACCES; | |
10784 | case FILEIO_EFAULT: | |
10785 | return EFAULT; | |
10786 | case FILEIO_EBUSY: | |
10787 | return EBUSY; | |
10788 | case FILEIO_EEXIST: | |
10789 | return EEXIST; | |
10790 | case FILEIO_ENODEV: | |
10791 | return ENODEV; | |
10792 | case FILEIO_ENOTDIR: | |
10793 | return ENOTDIR; | |
10794 | case FILEIO_EISDIR: | |
10795 | return EISDIR; | |
10796 | case FILEIO_EINVAL: | |
10797 | return EINVAL; | |
10798 | case FILEIO_ENFILE: | |
10799 | return ENFILE; | |
10800 | case FILEIO_EMFILE: | |
10801 | return EMFILE; | |
10802 | case FILEIO_EFBIG: | |
10803 | return EFBIG; | |
10804 | case FILEIO_ENOSPC: | |
10805 | return ENOSPC; | |
10806 | case FILEIO_ESPIPE: | |
10807 | return ESPIPE; | |
10808 | case FILEIO_EROFS: | |
10809 | return EROFS; | |
10810 | case FILEIO_ENOSYS: | |
10811 | return ENOSYS; | |
10812 | case FILEIO_ENAMETOOLONG: | |
10813 | return ENAMETOOLONG; | |
10814 | } | |
10815 | return -1; | |
10816 | } | |
10817 | ||
10818 | static char * | |
10819 | remote_hostio_error (int errnum) | |
10820 | { | |
10821 | int host_error = remote_fileio_errno_to_host (errnum); | |
10822 | ||
10823 | if (host_error == -1) | |
10824 | error (_("Unknown remote I/O error %d"), errnum); | |
10825 | else | |
10826 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
10827 | } | |
10828 | ||
10829 | static void | |
10830 | remote_hostio_close_cleanup (void *opaque) | |
10831 | { | |
10832 | int fd = *(int *) opaque; | |
10833 | int remote_errno; | |
10834 | ||
25e4902b | 10835 | remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno); |
5796c8dc SS |
10836 | } |
10837 | ||
10838 | void | |
10839 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
10840 | { | |
10841 | struct cleanup *back_to, *close_cleanup; | |
10842 | int retcode, fd, remote_errno, bytes, io_size; | |
10843 | FILE *file; | |
10844 | gdb_byte *buffer; | |
10845 | int bytes_in_buffer; | |
10846 | int saw_eof; | |
10847 | ULONGEST offset; | |
25e4902b | 10848 | struct remote_state *rs = get_remote_state (); |
5796c8dc | 10849 | |
25e4902b | 10850 | if (!rs->remote_desc) |
5796c8dc SS |
10851 | error (_("command can only be used with remote target")); |
10852 | ||
25e4902b | 10853 | file = gdb_fopen_cloexec (local_file, "rb"); |
5796c8dc SS |
10854 | if (file == NULL) |
10855 | perror_with_name (local_file); | |
10856 | back_to = make_cleanup_fclose (file); | |
10857 | ||
25e4902b AHJ |
10858 | fd = remote_hostio_open (find_target_at (process_stratum), NULL, |
10859 | remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT | |
5796c8dc | 10860 | | FILEIO_O_TRUNC), |
25e4902b | 10861 | 0700, 0, &remote_errno); |
5796c8dc SS |
10862 | if (fd == -1) |
10863 | remote_hostio_error (remote_errno); | |
10864 | ||
10865 | /* Send up to this many bytes at once. They won't all fit in the | |
10866 | remote packet limit, so we'll transfer slightly fewer. */ | |
10867 | io_size = get_remote_packet_size (); | |
10868 | buffer = xmalloc (io_size); | |
10869 | make_cleanup (xfree, buffer); | |
10870 | ||
10871 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
10872 | ||
10873 | bytes_in_buffer = 0; | |
10874 | saw_eof = 0; | |
10875 | offset = 0; | |
10876 | while (bytes_in_buffer || !saw_eof) | |
10877 | { | |
10878 | if (!saw_eof) | |
10879 | { | |
c50c785c JM |
10880 | bytes = fread (buffer + bytes_in_buffer, 1, |
10881 | io_size - bytes_in_buffer, | |
5796c8dc SS |
10882 | file); |
10883 | if (bytes == 0) | |
10884 | { | |
10885 | if (ferror (file)) | |
10886 | error (_("Error reading %s."), local_file); | |
10887 | else | |
10888 | { | |
10889 | /* EOF. Unless there is something still in the | |
10890 | buffer from the last iteration, we are done. */ | |
10891 | saw_eof = 1; | |
10892 | if (bytes_in_buffer == 0) | |
10893 | break; | |
10894 | } | |
10895 | } | |
10896 | } | |
10897 | else | |
10898 | bytes = 0; | |
10899 | ||
10900 | bytes += bytes_in_buffer; | |
10901 | bytes_in_buffer = 0; | |
10902 | ||
25e4902b AHJ |
10903 | retcode = remote_hostio_pwrite (find_target_at (process_stratum), |
10904 | fd, buffer, bytes, | |
c50c785c | 10905 | offset, &remote_errno); |
5796c8dc SS |
10906 | |
10907 | if (retcode < 0) | |
10908 | remote_hostio_error (remote_errno); | |
10909 | else if (retcode == 0) | |
10910 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
10911 | else if (retcode < bytes) | |
10912 | { | |
10913 | /* Short write. Save the rest of the read data for the next | |
10914 | write. */ | |
10915 | bytes_in_buffer = bytes - retcode; | |
10916 | memmove (buffer, buffer + retcode, bytes_in_buffer); | |
10917 | } | |
10918 | ||
10919 | offset += retcode; | |
10920 | } | |
10921 | ||
10922 | discard_cleanups (close_cleanup); | |
25e4902b | 10923 | if (remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno)) |
5796c8dc SS |
10924 | remote_hostio_error (remote_errno); |
10925 | ||
10926 | if (from_tty) | |
10927 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
10928 | do_cleanups (back_to); | |
10929 | } | |
10930 | ||
10931 | void | |
10932 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
10933 | { | |
10934 | struct cleanup *back_to, *close_cleanup; | |
10935 | int fd, remote_errno, bytes, io_size; | |
10936 | FILE *file; | |
10937 | gdb_byte *buffer; | |
10938 | ULONGEST offset; | |
25e4902b | 10939 | struct remote_state *rs = get_remote_state (); |
5796c8dc | 10940 | |
25e4902b | 10941 | if (!rs->remote_desc) |
5796c8dc SS |
10942 | error (_("command can only be used with remote target")); |
10943 | ||
25e4902b AHJ |
10944 | fd = remote_hostio_open (find_target_at (process_stratum), NULL, |
10945 | remote_file, FILEIO_O_RDONLY, 0, 0, | |
10946 | &remote_errno); | |
5796c8dc SS |
10947 | if (fd == -1) |
10948 | remote_hostio_error (remote_errno); | |
10949 | ||
25e4902b | 10950 | file = gdb_fopen_cloexec (local_file, "wb"); |
5796c8dc SS |
10951 | if (file == NULL) |
10952 | perror_with_name (local_file); | |
10953 | back_to = make_cleanup_fclose (file); | |
10954 | ||
10955 | /* Send up to this many bytes at once. They won't all fit in the | |
10956 | remote packet limit, so we'll transfer slightly fewer. */ | |
10957 | io_size = get_remote_packet_size (); | |
10958 | buffer = xmalloc (io_size); | |
10959 | make_cleanup (xfree, buffer); | |
10960 | ||
10961 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
10962 | ||
10963 | offset = 0; | |
10964 | while (1) | |
10965 | { | |
25e4902b AHJ |
10966 | bytes = remote_hostio_pread (find_target_at (process_stratum), |
10967 | fd, buffer, io_size, offset, &remote_errno); | |
5796c8dc SS |
10968 | if (bytes == 0) |
10969 | /* Success, but no bytes, means end-of-file. */ | |
10970 | break; | |
10971 | if (bytes == -1) | |
10972 | remote_hostio_error (remote_errno); | |
10973 | ||
10974 | offset += bytes; | |
10975 | ||
10976 | bytes = fwrite (buffer, 1, bytes, file); | |
10977 | if (bytes == 0) | |
10978 | perror_with_name (local_file); | |
10979 | } | |
10980 | ||
10981 | discard_cleanups (close_cleanup); | |
25e4902b | 10982 | if (remote_hostio_close (find_target_at (process_stratum), fd, &remote_errno)) |
5796c8dc SS |
10983 | remote_hostio_error (remote_errno); |
10984 | ||
10985 | if (from_tty) | |
10986 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
10987 | do_cleanups (back_to); | |
10988 | } | |
10989 | ||
10990 | void | |
10991 | remote_file_delete (const char *remote_file, int from_tty) | |
10992 | { | |
10993 | int retcode, remote_errno; | |
25e4902b | 10994 | struct remote_state *rs = get_remote_state (); |
5796c8dc | 10995 | |
25e4902b | 10996 | if (!rs->remote_desc) |
5796c8dc SS |
10997 | error (_("command can only be used with remote target")); |
10998 | ||
25e4902b AHJ |
10999 | retcode = remote_hostio_unlink (find_target_at (process_stratum), |
11000 | NULL, remote_file, &remote_errno); | |
5796c8dc SS |
11001 | if (retcode == -1) |
11002 | remote_hostio_error (remote_errno); | |
11003 | ||
11004 | if (from_tty) | |
11005 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
11006 | } | |
11007 | ||
11008 | static void | |
11009 | remote_put_command (char *args, int from_tty) | |
11010 | { | |
11011 | struct cleanup *back_to; | |
11012 | char **argv; | |
11013 | ||
11014 | if (args == NULL) | |
11015 | error_no_arg (_("file to put")); | |
11016 | ||
11017 | argv = gdb_buildargv (args); | |
11018 | back_to = make_cleanup_freeargv (argv); | |
11019 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
11020 | error (_("Invalid parameters to remote put")); | |
11021 | ||
11022 | remote_file_put (argv[0], argv[1], from_tty); | |
11023 | ||
11024 | do_cleanups (back_to); | |
11025 | } | |
11026 | ||
11027 | static void | |
11028 | remote_get_command (char *args, int from_tty) | |
11029 | { | |
11030 | struct cleanup *back_to; | |
11031 | char **argv; | |
11032 | ||
11033 | if (args == NULL) | |
11034 | error_no_arg (_("file to get")); | |
11035 | ||
11036 | argv = gdb_buildargv (args); | |
11037 | back_to = make_cleanup_freeargv (argv); | |
11038 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
11039 | error (_("Invalid parameters to remote get")); | |
11040 | ||
11041 | remote_file_get (argv[0], argv[1], from_tty); | |
11042 | ||
11043 | do_cleanups (back_to); | |
11044 | } | |
11045 | ||
11046 | static void | |
11047 | remote_delete_command (char *args, int from_tty) | |
11048 | { | |
11049 | struct cleanup *back_to; | |
11050 | char **argv; | |
11051 | ||
11052 | if (args == NULL) | |
11053 | error_no_arg (_("file to delete")); | |
11054 | ||
11055 | argv = gdb_buildargv (args); | |
11056 | back_to = make_cleanup_freeargv (argv); | |
11057 | if (argv[0] == NULL || argv[1] != NULL) | |
11058 | error (_("Invalid parameters to remote delete")); | |
11059 | ||
11060 | remote_file_delete (argv[0], from_tty); | |
11061 | ||
11062 | do_cleanups (back_to); | |
11063 | } | |
11064 | ||
11065 | static void | |
11066 | remote_command (char *args, int from_tty) | |
11067 | { | |
25e4902b | 11068 | help_list (remote_cmdlist, "remote ", all_commands, gdb_stdout); |
5796c8dc SS |
11069 | } |
11070 | ||
11071 | static int | |
25e4902b | 11072 | remote_can_execute_reverse (struct target_ops *self) |
5796c8dc | 11073 | { |
25e4902b AHJ |
11074 | if (packet_support (PACKET_bs) == PACKET_ENABLE |
11075 | || packet_support (PACKET_bc) == PACKET_ENABLE) | |
5796c8dc SS |
11076 | return 1; |
11077 | else | |
11078 | return 0; | |
11079 | } | |
11080 | ||
11081 | static int | |
25e4902b | 11082 | remote_supports_non_stop (struct target_ops *self) |
5796c8dc SS |
11083 | { |
11084 | return 1; | |
11085 | } | |
11086 | ||
a45ae5f8 | 11087 | static int |
25e4902b | 11088 | remote_supports_disable_randomization (struct target_ops *self) |
a45ae5f8 JM |
11089 | { |
11090 | /* Only supported in extended mode. */ | |
11091 | return 0; | |
11092 | } | |
11093 | ||
5796c8dc | 11094 | static int |
25e4902b | 11095 | remote_supports_multi_process (struct target_ops *self) |
5796c8dc SS |
11096 | { |
11097 | struct remote_state *rs = get_remote_state (); | |
cf7f2e2d | 11098 | |
ef5ccd6c JM |
11099 | /* Only extended-remote handles being attached to multiple |
11100 | processes, even though plain remote can use the multi-process | |
11101 | thread id extensions, so that GDB knows the target process's | |
11102 | PID. */ | |
11103 | return rs->extended && remote_multi_process_p (rs); | |
5796c8dc SS |
11104 | } |
11105 | ||
ef5ccd6c | 11106 | static int |
5796c8dc SS |
11107 | remote_supports_cond_tracepoints (void) |
11108 | { | |
25e4902b | 11109 | return packet_support (PACKET_ConditionalTracepoints) == PACKET_ENABLE; |
5796c8dc SS |
11110 | } |
11111 | ||
ef5ccd6c | 11112 | static int |
25e4902b | 11113 | remote_supports_cond_breakpoints (struct target_ops *self) |
ef5ccd6c | 11114 | { |
25e4902b | 11115 | return packet_support (PACKET_ConditionalBreakpoints) == PACKET_ENABLE; |
ef5ccd6c JM |
11116 | } |
11117 | ||
11118 | static int | |
cf7f2e2d JM |
11119 | remote_supports_fast_tracepoints (void) |
11120 | { | |
25e4902b | 11121 | return packet_support (PACKET_FastTracepoints) == PACKET_ENABLE; |
cf7f2e2d JM |
11122 | } |
11123 | ||
11124 | static int | |
11125 | remote_supports_static_tracepoints (void) | |
11126 | { | |
25e4902b | 11127 | return packet_support (PACKET_StaticTracepoints) == PACKET_ENABLE; |
cf7f2e2d JM |
11128 | } |
11129 | ||
a45ae5f8 JM |
11130 | static int |
11131 | remote_supports_install_in_trace (void) | |
11132 | { | |
25e4902b | 11133 | return packet_support (PACKET_InstallInTrace) == PACKET_ENABLE; |
a45ae5f8 JM |
11134 | } |
11135 | ||
11136 | static int | |
25e4902b | 11137 | remote_supports_enable_disable_tracepoint (struct target_ops *self) |
a45ae5f8 | 11138 | { |
25e4902b AHJ |
11139 | return (packet_support (PACKET_EnableDisableTracepoints_feature) |
11140 | == PACKET_ENABLE); | |
a45ae5f8 JM |
11141 | } |
11142 | ||
11143 | static int | |
25e4902b | 11144 | remote_supports_string_tracing (struct target_ops *self) |
a45ae5f8 | 11145 | { |
25e4902b | 11146 | return packet_support (PACKET_tracenz_feature) == PACKET_ENABLE; |
a45ae5f8 JM |
11147 | } |
11148 | ||
ef5ccd6c | 11149 | static int |
25e4902b | 11150 | remote_can_run_breakpoint_commands (struct target_ops *self) |
ef5ccd6c | 11151 | { |
25e4902b | 11152 | return packet_support (PACKET_BreakpointCommands) == PACKET_ENABLE; |
ef5ccd6c JM |
11153 | } |
11154 | ||
cf7f2e2d | 11155 | static void |
25e4902b | 11156 | remote_trace_init (struct target_ops *self) |
cf7f2e2d JM |
11157 | { |
11158 | putpkt ("QTinit"); | |
11159 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11160 | if (strcmp (target_buf, "OK") != 0) | |
11161 | error (_("Target does not support this command.")); | |
11162 | } | |
11163 | ||
11164 | static void free_actions_list (char **actions_list); | |
11165 | static void free_actions_list_cleanup_wrapper (void *); | |
11166 | static void | |
11167 | free_actions_list_cleanup_wrapper (void *al) | |
11168 | { | |
11169 | free_actions_list (al); | |
11170 | } | |
11171 | ||
11172 | static void | |
11173 | free_actions_list (char **actions_list) | |
11174 | { | |
11175 | int ndx; | |
11176 | ||
11177 | if (actions_list == 0) | |
11178 | return; | |
11179 | ||
11180 | for (ndx = 0; actions_list[ndx]; ndx++) | |
11181 | xfree (actions_list[ndx]); | |
11182 | ||
11183 | xfree (actions_list); | |
11184 | } | |
11185 | ||
11186 | /* Recursive routine to walk through command list including loops, and | |
11187 | download packets for each command. */ | |
11188 | ||
11189 | static void | |
11190 | remote_download_command_source (int num, ULONGEST addr, | |
11191 | struct command_line *cmds) | |
11192 | { | |
11193 | struct remote_state *rs = get_remote_state (); | |
11194 | struct command_line *cmd; | |
11195 | ||
11196 | for (cmd = cmds; cmd; cmd = cmd->next) | |
11197 | { | |
c50c785c | 11198 | QUIT; /* Allow user to bail out with ^C. */ |
cf7f2e2d JM |
11199 | strcpy (rs->buf, "QTDPsrc:"); |
11200 | encode_source_string (num, addr, "cmd", cmd->line, | |
11201 | rs->buf + strlen (rs->buf), | |
11202 | rs->buf_size - strlen (rs->buf)); | |
11203 | putpkt (rs->buf); | |
11204 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11205 | if (strcmp (target_buf, "OK")) | |
11206 | warning (_("Target does not support source download.")); | |
11207 | ||
11208 | if (cmd->control_type == while_control | |
11209 | || cmd->control_type == while_stepping_control) | |
11210 | { | |
11211 | remote_download_command_source (num, addr, *cmd->body_list); | |
11212 | ||
c50c785c | 11213 | QUIT; /* Allow user to bail out with ^C. */ |
cf7f2e2d JM |
11214 | strcpy (rs->buf, "QTDPsrc:"); |
11215 | encode_source_string (num, addr, "cmd", "end", | |
11216 | rs->buf + strlen (rs->buf), | |
11217 | rs->buf_size - strlen (rs->buf)); | |
11218 | putpkt (rs->buf); | |
11219 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11220 | if (strcmp (target_buf, "OK")) | |
11221 | warning (_("Target does not support source download.")); | |
11222 | } | |
11223 | } | |
11224 | } | |
11225 | ||
11226 | static void | |
25e4902b | 11227 | remote_download_tracepoint (struct target_ops *self, struct bp_location *loc) |
cf7f2e2d | 11228 | { |
ef5ccd6c | 11229 | #define BUF_SIZE 2048 |
a45ae5f8 | 11230 | |
cf7f2e2d JM |
11231 | CORE_ADDR tpaddr; |
11232 | char addrbuf[40]; | |
ef5ccd6c | 11233 | char buf[BUF_SIZE]; |
cf7f2e2d JM |
11234 | char **tdp_actions; |
11235 | char **stepping_actions; | |
11236 | int ndx; | |
11237 | struct cleanup *old_chain = NULL; | |
11238 | struct agent_expr *aexpr; | |
11239 | struct cleanup *aexpr_chain = NULL; | |
11240 | char *pkt; | |
a45ae5f8 JM |
11241 | struct breakpoint *b = loc->owner; |
11242 | struct tracepoint *t = (struct tracepoint *) b; | |
11243 | ||
25e4902b | 11244 | encode_actions_rsp (loc, &tdp_actions, &stepping_actions); |
a45ae5f8 JM |
11245 | old_chain = make_cleanup (free_actions_list_cleanup_wrapper, |
11246 | tdp_actions); | |
11247 | (void) make_cleanup (free_actions_list_cleanup_wrapper, | |
11248 | stepping_actions); | |
11249 | ||
11250 | tpaddr = loc->address; | |
11251 | sprintf_vma (addrbuf, tpaddr); | |
ef5ccd6c JM |
11252 | xsnprintf (buf, BUF_SIZE, "QTDP:%x:%s:%c:%lx:%x", b->number, |
11253 | addrbuf, /* address */ | |
11254 | (b->enable_state == bp_enabled ? 'E' : 'D'), | |
11255 | t->step_count, t->pass_count); | |
a45ae5f8 JM |
11256 | /* Fast tracepoints are mostly handled by the target, but we can |
11257 | tell the target how big of an instruction block should be moved | |
11258 | around. */ | |
11259 | if (b->type == bp_fast_tracepoint) | |
11260 | { | |
11261 | /* Only test for support at download time; we may not know | |
11262 | target capabilities at definition time. */ | |
11263 | if (remote_supports_fast_tracepoints ()) | |
cf7f2e2d | 11264 | { |
a45ae5f8 | 11265 | int isize; |
cf7f2e2d | 11266 | |
ef5ccd6c | 11267 | if (gdbarch_fast_tracepoint_valid_at (target_gdbarch (), |
a45ae5f8 | 11268 | tpaddr, &isize, NULL)) |
ef5ccd6c JM |
11269 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":F%x", |
11270 | isize); | |
cf7f2e2d | 11271 | else |
a45ae5f8 JM |
11272 | /* If it passed validation at definition but fails now, |
11273 | something is very wrong. */ | |
11274 | internal_error (__FILE__, __LINE__, | |
11275 | _("Fast tracepoint not " | |
11276 | "valid during download")); | |
cf7f2e2d | 11277 | } |
a45ae5f8 JM |
11278 | else |
11279 | /* Fast tracepoints are functionally identical to regular | |
11280 | tracepoints, so don't take lack of support as a reason to | |
11281 | give up on the trace run. */ | |
11282 | warning (_("Target does not support fast tracepoints, " | |
11283 | "downloading %d as regular tracepoint"), b->number); | |
11284 | } | |
11285 | else if (b->type == bp_static_tracepoint) | |
11286 | { | |
11287 | /* Only test for support at download time; we may not know | |
11288 | target capabilities at definition time. */ | |
11289 | if (remote_supports_static_tracepoints ()) | |
cf7f2e2d | 11290 | { |
a45ae5f8 | 11291 | struct static_tracepoint_marker marker; |
cf7f2e2d | 11292 | |
a45ae5f8 JM |
11293 | if (target_static_tracepoint_marker_at (tpaddr, &marker)) |
11294 | strcat (buf, ":S"); | |
cf7f2e2d | 11295 | else |
a45ae5f8 | 11296 | error (_("Static tracepoint not valid during download")); |
cf7f2e2d | 11297 | } |
a45ae5f8 JM |
11298 | else |
11299 | /* Fast tracepoints are functionally identical to regular | |
11300 | tracepoints, so don't take lack of support as a reason | |
11301 | to give up on the trace run. */ | |
11302 | error (_("Target does not support static tracepoints")); | |
11303 | } | |
11304 | /* If the tracepoint has a conditional, make it into an agent | |
11305 | expression and append to the definition. */ | |
11306 | if (loc->cond) | |
11307 | { | |
11308 | /* Only test support at download time, we may not know target | |
11309 | capabilities at definition time. */ | |
11310 | if (remote_supports_cond_tracepoints ()) | |
cf7f2e2d | 11311 | { |
a45ae5f8 JM |
11312 | aexpr = gen_eval_for_expr (tpaddr, loc->cond); |
11313 | aexpr_chain = make_cleanup_free_agent_expr (aexpr); | |
ef5ccd6c JM |
11314 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":X%x,", |
11315 | aexpr->len); | |
a45ae5f8 JM |
11316 | pkt = buf + strlen (buf); |
11317 | for (ndx = 0; ndx < aexpr->len; ++ndx) | |
11318 | pkt = pack_hex_byte (pkt, aexpr->buf[ndx]); | |
11319 | *pkt = '\0'; | |
11320 | do_cleanups (aexpr_chain); | |
cf7f2e2d | 11321 | } |
a45ae5f8 JM |
11322 | else |
11323 | warning (_("Target does not support conditional tracepoints, " | |
11324 | "ignoring tp %d cond"), b->number); | |
11325 | } | |
cf7f2e2d | 11326 | |
a45ae5f8 JM |
11327 | if (b->commands || *default_collect) |
11328 | strcat (buf, "-"); | |
11329 | putpkt (buf); | |
11330 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11331 | if (strcmp (target_buf, "OK")) | |
11332 | error (_("Target does not support tracepoints.")); | |
cf7f2e2d | 11333 | |
a45ae5f8 JM |
11334 | /* do_single_steps (t); */ |
11335 | if (tdp_actions) | |
11336 | { | |
11337 | for (ndx = 0; tdp_actions[ndx]; ndx++) | |
cf7f2e2d | 11338 | { |
a45ae5f8 | 11339 | QUIT; /* Allow user to bail out with ^C. */ |
ef5ccd6c JM |
11340 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%c", |
11341 | b->number, addrbuf, /* address */ | |
11342 | tdp_actions[ndx], | |
11343 | ((tdp_actions[ndx + 1] || stepping_actions) | |
11344 | ? '-' : 0)); | |
a45ae5f8 JM |
11345 | putpkt (buf); |
11346 | remote_get_noisy_reply (&target_buf, | |
11347 | &target_buf_size); | |
11348 | if (strcmp (target_buf, "OK")) | |
11349 | error (_("Error on target while setting tracepoints.")); | |
cf7f2e2d | 11350 | } |
a45ae5f8 JM |
11351 | } |
11352 | if (stepping_actions) | |
11353 | { | |
11354 | for (ndx = 0; stepping_actions[ndx]; ndx++) | |
cf7f2e2d | 11355 | { |
a45ae5f8 | 11356 | QUIT; /* Allow user to bail out with ^C. */ |
ef5ccd6c JM |
11357 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%s%s", |
11358 | b->number, addrbuf, /* address */ | |
11359 | ((ndx == 0) ? "S" : ""), | |
11360 | stepping_actions[ndx], | |
11361 | (stepping_actions[ndx + 1] ? "-" : "")); | |
a45ae5f8 JM |
11362 | putpkt (buf); |
11363 | remote_get_noisy_reply (&target_buf, | |
11364 | &target_buf_size); | |
11365 | if (strcmp (target_buf, "OK")) | |
11366 | error (_("Error on target while setting tracepoints.")); | |
cf7f2e2d | 11367 | } |
a45ae5f8 | 11368 | } |
cf7f2e2d | 11369 | |
25e4902b | 11370 | if (packet_support (PACKET_TracepointSource) == PACKET_ENABLE) |
a45ae5f8 JM |
11371 | { |
11372 | if (b->addr_string) | |
cf7f2e2d | 11373 | { |
a45ae5f8 JM |
11374 | strcpy (buf, "QTDPsrc:"); |
11375 | encode_source_string (b->number, loc->address, | |
11376 | "at", b->addr_string, buf + strlen (buf), | |
11377 | 2048 - strlen (buf)); | |
cf7f2e2d | 11378 | |
a45ae5f8 JM |
11379 | putpkt (buf); |
11380 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11381 | if (strcmp (target_buf, "OK")) | |
11382 | warning (_("Target does not support source download.")); | |
cf7f2e2d | 11383 | } |
a45ae5f8 JM |
11384 | if (b->cond_string) |
11385 | { | |
11386 | strcpy (buf, "QTDPsrc:"); | |
11387 | encode_source_string (b->number, loc->address, | |
11388 | "cond", b->cond_string, buf + strlen (buf), | |
11389 | 2048 - strlen (buf)); | |
11390 | putpkt (buf); | |
11391 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11392 | if (strcmp (target_buf, "OK")) | |
11393 | warning (_("Target does not support source download.")); | |
11394 | } | |
11395 | remote_download_command_source (b->number, loc->address, | |
11396 | breakpoint_commands (b)); | |
cf7f2e2d | 11397 | } |
a45ae5f8 JM |
11398 | |
11399 | do_cleanups (old_chain); | |
11400 | } | |
11401 | ||
11402 | static int | |
25e4902b | 11403 | remote_can_download_tracepoint (struct target_ops *self) |
a45ae5f8 JM |
11404 | { |
11405 | struct remote_state *rs = get_remote_state (); | |
11406 | struct trace_status *ts; | |
11407 | int status; | |
11408 | ||
11409 | /* Don't try to install tracepoints until we've relocated our | |
11410 | symbols, and fetched and merged the target's tracepoint list with | |
11411 | ours. */ | |
11412 | if (rs->starting_up) | |
11413 | return 0; | |
11414 | ||
11415 | ts = current_trace_status (); | |
25e4902b | 11416 | status = remote_get_trace_status (self, ts); |
a45ae5f8 JM |
11417 | |
11418 | if (status == -1 || !ts->running_known || !ts->running) | |
11419 | return 0; | |
11420 | ||
11421 | /* If we are in a tracing experiment, but remote stub doesn't support | |
11422 | installing tracepoint in trace, we have to return. */ | |
11423 | if (!remote_supports_install_in_trace ()) | |
11424 | return 0; | |
11425 | ||
11426 | return 1; | |
cf7f2e2d JM |
11427 | } |
11428 | ||
a45ae5f8 | 11429 | |
cf7f2e2d | 11430 | static void |
25e4902b AHJ |
11431 | remote_download_trace_state_variable (struct target_ops *self, |
11432 | struct trace_state_variable *tsv) | |
cf7f2e2d JM |
11433 | { |
11434 | struct remote_state *rs = get_remote_state (); | |
11435 | char *p; | |
11436 | ||
ef5ccd6c JM |
11437 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDV:%x:%s:%x:", |
11438 | tsv->number, phex ((ULONGEST) tsv->initial_value, 8), | |
11439 | tsv->builtin); | |
cf7f2e2d JM |
11440 | p = rs->buf + strlen (rs->buf); |
11441 | if ((p - rs->buf) + strlen (tsv->name) * 2 >= get_remote_packet_size ()) | |
11442 | error (_("Trace state variable name too long for tsv definition packet")); | |
25e4902b | 11443 | p += 2 * bin2hex ((gdb_byte *) (tsv->name), p, strlen (tsv->name)); |
cf7f2e2d JM |
11444 | *p++ = '\0'; |
11445 | putpkt (rs->buf); | |
11446 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11447 | if (*target_buf == '\0') | |
11448 | error (_("Target does not support this command.")); | |
11449 | if (strcmp (target_buf, "OK") != 0) | |
11450 | error (_("Error on target while downloading trace state variable.")); | |
11451 | } | |
11452 | ||
a45ae5f8 | 11453 | static void |
25e4902b AHJ |
11454 | remote_enable_tracepoint (struct target_ops *self, |
11455 | struct bp_location *location) | |
a45ae5f8 JM |
11456 | { |
11457 | struct remote_state *rs = get_remote_state (); | |
11458 | char addr_buf[40]; | |
11459 | ||
11460 | sprintf_vma (addr_buf, location->address); | |
ef5ccd6c JM |
11461 | xsnprintf (rs->buf, get_remote_packet_size (), "QTEnable:%x:%s", |
11462 | location->owner->number, addr_buf); | |
a45ae5f8 JM |
11463 | putpkt (rs->buf); |
11464 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
11465 | if (*rs->buf == '\0') | |
11466 | error (_("Target does not support enabling tracepoints while a trace run is ongoing.")); | |
11467 | if (strcmp (rs->buf, "OK") != 0) | |
11468 | error (_("Error on target while enabling tracepoint.")); | |
11469 | } | |
11470 | ||
11471 | static void | |
25e4902b AHJ |
11472 | remote_disable_tracepoint (struct target_ops *self, |
11473 | struct bp_location *location) | |
a45ae5f8 JM |
11474 | { |
11475 | struct remote_state *rs = get_remote_state (); | |
11476 | char addr_buf[40]; | |
11477 | ||
11478 | sprintf_vma (addr_buf, location->address); | |
ef5ccd6c JM |
11479 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisable:%x:%s", |
11480 | location->owner->number, addr_buf); | |
a45ae5f8 JM |
11481 | putpkt (rs->buf); |
11482 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
11483 | if (*rs->buf == '\0') | |
11484 | error (_("Target does not support disabling tracepoints while a trace run is ongoing.")); | |
11485 | if (strcmp (rs->buf, "OK") != 0) | |
11486 | error (_("Error on target while disabling tracepoint.")); | |
11487 | } | |
11488 | ||
cf7f2e2d | 11489 | static void |
25e4902b | 11490 | remote_trace_set_readonly_regions (struct target_ops *self) |
cf7f2e2d JM |
11491 | { |
11492 | asection *s; | |
ef5ccd6c | 11493 | bfd *abfd = NULL; |
cf7f2e2d | 11494 | bfd_size_type size; |
c50c785c | 11495 | bfd_vma vma; |
cf7f2e2d | 11496 | int anysecs = 0; |
c50c785c | 11497 | int offset = 0; |
cf7f2e2d JM |
11498 | |
11499 | if (!exec_bfd) | |
11500 | return; /* No information to give. */ | |
11501 | ||
11502 | strcpy (target_buf, "QTro"); | |
ef5ccd6c | 11503 | offset = strlen (target_buf); |
cf7f2e2d JM |
11504 | for (s = exec_bfd->sections; s; s = s->next) |
11505 | { | |
11506 | char tmp1[40], tmp2[40]; | |
c50c785c | 11507 | int sec_length; |
cf7f2e2d JM |
11508 | |
11509 | if ((s->flags & SEC_LOAD) == 0 || | |
c50c785c | 11510 | /* (s->flags & SEC_CODE) == 0 || */ |
cf7f2e2d JM |
11511 | (s->flags & SEC_READONLY) == 0) |
11512 | continue; | |
11513 | ||
11514 | anysecs = 1; | |
ef5ccd6c | 11515 | vma = bfd_get_section_vma (abfd, s); |
cf7f2e2d | 11516 | size = bfd_get_section_size (s); |
c50c785c JM |
11517 | sprintf_vma (tmp1, vma); |
11518 | sprintf_vma (tmp2, vma + size); | |
11519 | sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2); | |
11520 | if (offset + sec_length + 1 > target_buf_size) | |
11521 | { | |
25e4902b | 11522 | if (packet_support (PACKET_qXfer_traceframe_info) != PACKET_ENABLE) |
c50c785c JM |
11523 | warning (_("\ |
11524 | Too many sections for read-only sections definition packet.")); | |
11525 | break; | |
11526 | } | |
ef5ccd6c JM |
11527 | xsnprintf (target_buf + offset, target_buf_size - offset, ":%s,%s", |
11528 | tmp1, tmp2); | |
c50c785c | 11529 | offset += sec_length; |
cf7f2e2d JM |
11530 | } |
11531 | if (anysecs) | |
11532 | { | |
11533 | putpkt (target_buf); | |
11534 | getpkt (&target_buf, &target_buf_size, 0); | |
11535 | } | |
11536 | } | |
11537 | ||
11538 | static void | |
25e4902b | 11539 | remote_trace_start (struct target_ops *self) |
cf7f2e2d JM |
11540 | { |
11541 | putpkt ("QTStart"); | |
11542 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11543 | if (*target_buf == '\0') | |
11544 | error (_("Target does not support this command.")); | |
11545 | if (strcmp (target_buf, "OK") != 0) | |
11546 | error (_("Bogus reply from target: %s"), target_buf); | |
11547 | } | |
11548 | ||
11549 | static int | |
25e4902b | 11550 | remote_get_trace_status (struct target_ops *self, struct trace_status *ts) |
cf7f2e2d | 11551 | { |
c50c785c JM |
11552 | /* Initialize it just to avoid a GCC false warning. */ |
11553 | char *p = NULL; | |
11554 | /* FIXME we need to get register block size some other way. */ | |
cf7f2e2d | 11555 | extern int trace_regblock_size; |
25e4902b AHJ |
11556 | enum packet_result result; |
11557 | ||
11558 | if (packet_support (PACKET_qTStatus) == PACKET_DISABLE) | |
11559 | return -1; | |
cf7f2e2d JM |
11560 | |
11561 | trace_regblock_size = get_remote_arch_state ()->sizeof_g_packet; | |
11562 | ||
11563 | putpkt ("qTStatus"); | |
c50c785c | 11564 | |
25e4902b | 11565 | TRY |
c50c785c JM |
11566 | { |
11567 | p = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11568 | } | |
25e4902b | 11569 | CATCH (ex, RETURN_MASK_ERROR) |
c50c785c | 11570 | { |
ef5ccd6c JM |
11571 | if (ex.error != TARGET_CLOSE_ERROR) |
11572 | { | |
11573 | exception_fprintf (gdb_stderr, ex, "qTStatus: "); | |
11574 | return -1; | |
11575 | } | |
11576 | throw_exception (ex); | |
c50c785c | 11577 | } |
25e4902b AHJ |
11578 | END_CATCH |
11579 | ||
11580 | result = packet_ok (p, &remote_protocol_packets[PACKET_qTStatus]); | |
cf7f2e2d JM |
11581 | |
11582 | /* If the remote target doesn't do tracing, flag it. */ | |
25e4902b | 11583 | if (result == PACKET_UNKNOWN) |
cf7f2e2d JM |
11584 | return -1; |
11585 | ||
11586 | /* We're working with a live target. */ | |
ef5ccd6c | 11587 | ts->filename = NULL; |
cf7f2e2d JM |
11588 | |
11589 | if (*p++ != 'T') | |
11590 | error (_("Bogus trace status reply from target: %s"), target_buf); | |
11591 | ||
ef5ccd6c JM |
11592 | /* Function 'parse_trace_status' sets default value of each field of |
11593 | 'ts' at first, so we don't have to do it here. */ | |
cf7f2e2d JM |
11594 | parse_trace_status (p, ts); |
11595 | ||
11596 | return ts->running; | |
11597 | } | |
11598 | ||
ef5ccd6c | 11599 | static void |
25e4902b | 11600 | remote_get_tracepoint_status (struct target_ops *self, struct breakpoint *bp, |
a45ae5f8 JM |
11601 | struct uploaded_tp *utp) |
11602 | { | |
11603 | struct remote_state *rs = get_remote_state (); | |
11604 | char *reply; | |
11605 | struct bp_location *loc; | |
11606 | struct tracepoint *tp = (struct tracepoint *) bp; | |
ef5ccd6c | 11607 | size_t size = get_remote_packet_size (); |
a45ae5f8 JM |
11608 | |
11609 | if (tp) | |
11610 | { | |
11611 | tp->base.hit_count = 0; | |
11612 | tp->traceframe_usage = 0; | |
11613 | for (loc = tp->base.loc; loc; loc = loc->next) | |
11614 | { | |
11615 | /* If the tracepoint was never downloaded, don't go asking for | |
11616 | any status. */ | |
11617 | if (tp->number_on_target == 0) | |
11618 | continue; | |
ef5ccd6c JM |
11619 | xsnprintf (rs->buf, size, "qTP:%x:%s", tp->number_on_target, |
11620 | phex_nz (loc->address, 0)); | |
a45ae5f8 JM |
11621 | putpkt (rs->buf); |
11622 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11623 | if (reply && *reply) | |
11624 | { | |
11625 | if (*reply == 'V') | |
11626 | parse_tracepoint_status (reply + 1, bp, utp); | |
11627 | } | |
11628 | } | |
11629 | } | |
11630 | else if (utp) | |
11631 | { | |
11632 | utp->hit_count = 0; | |
11633 | utp->traceframe_usage = 0; | |
ef5ccd6c JM |
11634 | xsnprintf (rs->buf, size, "qTP:%x:%s", utp->number, |
11635 | phex_nz (utp->addr, 0)); | |
a45ae5f8 JM |
11636 | putpkt (rs->buf); |
11637 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11638 | if (reply && *reply) | |
11639 | { | |
11640 | if (*reply == 'V') | |
11641 | parse_tracepoint_status (reply + 1, bp, utp); | |
11642 | } | |
11643 | } | |
11644 | } | |
11645 | ||
cf7f2e2d | 11646 | static void |
25e4902b | 11647 | remote_trace_stop (struct target_ops *self) |
cf7f2e2d JM |
11648 | { |
11649 | putpkt ("QTStop"); | |
11650 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11651 | if (*target_buf == '\0') | |
11652 | error (_("Target does not support this command.")); | |
11653 | if (strcmp (target_buf, "OK") != 0) | |
11654 | error (_("Bogus reply from target: %s"), target_buf); | |
11655 | } | |
11656 | ||
11657 | static int | |
25e4902b AHJ |
11658 | remote_trace_find (struct target_ops *self, |
11659 | enum trace_find_type type, int num, | |
11660 | CORE_ADDR addr1, CORE_ADDR addr2, | |
cf7f2e2d JM |
11661 | int *tpp) |
11662 | { | |
11663 | struct remote_state *rs = get_remote_state (); | |
ef5ccd6c | 11664 | char *endbuf = rs->buf + get_remote_packet_size (); |
cf7f2e2d JM |
11665 | char *p, *reply; |
11666 | int target_frameno = -1, target_tracept = -1; | |
11667 | ||
c50c785c JM |
11668 | /* Lookups other than by absolute frame number depend on the current |
11669 | trace selected, so make sure it is correct on the remote end | |
11670 | first. */ | |
11671 | if (type != tfind_number) | |
11672 | set_remote_traceframe (); | |
11673 | ||
cf7f2e2d JM |
11674 | p = rs->buf; |
11675 | strcpy (p, "QTFrame:"); | |
11676 | p = strchr (p, '\0'); | |
11677 | switch (type) | |
11678 | { | |
11679 | case tfind_number: | |
ef5ccd6c | 11680 | xsnprintf (p, endbuf - p, "%x", num); |
cf7f2e2d JM |
11681 | break; |
11682 | case tfind_pc: | |
ef5ccd6c | 11683 | xsnprintf (p, endbuf - p, "pc:%s", phex_nz (addr1, 0)); |
cf7f2e2d JM |
11684 | break; |
11685 | case tfind_tp: | |
ef5ccd6c | 11686 | xsnprintf (p, endbuf - p, "tdp:%x", num); |
cf7f2e2d JM |
11687 | break; |
11688 | case tfind_range: | |
ef5ccd6c JM |
11689 | xsnprintf (p, endbuf - p, "range:%s:%s", phex_nz (addr1, 0), |
11690 | phex_nz (addr2, 0)); | |
cf7f2e2d JM |
11691 | break; |
11692 | case tfind_outside: | |
ef5ccd6c JM |
11693 | xsnprintf (p, endbuf - p, "outside:%s:%s", phex_nz (addr1, 0), |
11694 | phex_nz (addr2, 0)); | |
cf7f2e2d JM |
11695 | break; |
11696 | default: | |
c50c785c | 11697 | error (_("Unknown trace find type %d"), type); |
cf7f2e2d JM |
11698 | } |
11699 | ||
11700 | putpkt (rs->buf); | |
25e4902b | 11701 | reply = remote_get_noisy_reply (&(rs->buf), &rs->buf_size); |
cf7f2e2d JM |
11702 | if (*reply == '\0') |
11703 | error (_("Target does not support this command.")); | |
11704 | ||
11705 | while (reply && *reply) | |
11706 | switch (*reply) | |
11707 | { | |
11708 | case 'F': | |
11709 | p = ++reply; | |
11710 | target_frameno = (int) strtol (p, &reply, 16); | |
11711 | if (reply == p) | |
11712 | error (_("Unable to parse trace frame number")); | |
c50c785c JM |
11713 | /* Don't update our remote traceframe number cache on failure |
11714 | to select a remote traceframe. */ | |
cf7f2e2d JM |
11715 | if (target_frameno == -1) |
11716 | return -1; | |
11717 | break; | |
11718 | case 'T': | |
11719 | p = ++reply; | |
11720 | target_tracept = (int) strtol (p, &reply, 16); | |
11721 | if (reply == p) | |
11722 | error (_("Unable to parse tracepoint number")); | |
11723 | break; | |
11724 | case 'O': /* "OK"? */ | |
11725 | if (reply[1] == 'K' && reply[2] == '\0') | |
11726 | reply += 2; | |
11727 | else | |
11728 | error (_("Bogus reply from target: %s"), reply); | |
11729 | break; | |
11730 | default: | |
11731 | error (_("Bogus reply from target: %s"), reply); | |
11732 | } | |
11733 | if (tpp) | |
11734 | *tpp = target_tracept; | |
c50c785c | 11735 | |
25e4902b | 11736 | rs->remote_traceframe_number = target_frameno; |
cf7f2e2d JM |
11737 | return target_frameno; |
11738 | } | |
11739 | ||
11740 | static int | |
25e4902b AHJ |
11741 | remote_get_trace_state_variable_value (struct target_ops *self, |
11742 | int tsvnum, LONGEST *val) | |
cf7f2e2d JM |
11743 | { |
11744 | struct remote_state *rs = get_remote_state (); | |
11745 | char *reply; | |
11746 | ULONGEST uval; | |
11747 | ||
c50c785c JM |
11748 | set_remote_traceframe (); |
11749 | ||
ef5ccd6c | 11750 | xsnprintf (rs->buf, get_remote_packet_size (), "qTV:%x", tsvnum); |
cf7f2e2d JM |
11751 | putpkt (rs->buf); |
11752 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11753 | if (reply && *reply) | |
11754 | { | |
11755 | if (*reply == 'V') | |
11756 | { | |
11757 | unpack_varlen_hex (reply + 1, &uval); | |
11758 | *val = (LONGEST) uval; | |
11759 | return 1; | |
11760 | } | |
11761 | } | |
11762 | return 0; | |
11763 | } | |
11764 | ||
11765 | static int | |
25e4902b | 11766 | remote_save_trace_data (struct target_ops *self, const char *filename) |
cf7f2e2d JM |
11767 | { |
11768 | struct remote_state *rs = get_remote_state (); | |
11769 | char *p, *reply; | |
11770 | ||
11771 | p = rs->buf; | |
11772 | strcpy (p, "QTSave:"); | |
11773 | p += strlen (p); | |
11774 | if ((p - rs->buf) + strlen (filename) * 2 >= get_remote_packet_size ()) | |
11775 | error (_("Remote file name too long for trace save packet")); | |
25e4902b | 11776 | p += 2 * bin2hex ((gdb_byte *) filename, p, strlen (filename)); |
cf7f2e2d JM |
11777 | *p++ = '\0'; |
11778 | putpkt (rs->buf); | |
11779 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
a45ae5f8 | 11780 | if (*reply == '\0') |
cf7f2e2d JM |
11781 | error (_("Target does not support this command.")); |
11782 | if (strcmp (reply, "OK") != 0) | |
11783 | error (_("Bogus reply from target: %s"), reply); | |
11784 | return 0; | |
11785 | } | |
11786 | ||
11787 | /* This is basically a memory transfer, but needs to be its own packet | |
11788 | because we don't know how the target actually organizes its trace | |
11789 | memory, plus we want to be able to ask for as much as possible, but | |
11790 | not be unhappy if we don't get as much as we ask for. */ | |
11791 | ||
11792 | static LONGEST | |
25e4902b AHJ |
11793 | remote_get_raw_trace_data (struct target_ops *self, |
11794 | gdb_byte *buf, ULONGEST offset, LONGEST len) | |
cf7f2e2d JM |
11795 | { |
11796 | struct remote_state *rs = get_remote_state (); | |
11797 | char *reply; | |
11798 | char *p; | |
11799 | int rslt; | |
11800 | ||
11801 | p = rs->buf; | |
11802 | strcpy (p, "qTBuffer:"); | |
11803 | p += strlen (p); | |
11804 | p += hexnumstr (p, offset); | |
11805 | *p++ = ','; | |
11806 | p += hexnumstr (p, len); | |
11807 | *p++ = '\0'; | |
11808 | ||
11809 | putpkt (rs->buf); | |
11810 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11811 | if (reply && *reply) | |
11812 | { | |
11813 | /* 'l' by itself means we're at the end of the buffer and | |
11814 | there is nothing more to get. */ | |
11815 | if (*reply == 'l') | |
11816 | return 0; | |
11817 | ||
11818 | /* Convert the reply into binary. Limit the number of bytes to | |
11819 | convert according to our passed-in buffer size, rather than | |
11820 | what was returned in the packet; if the target is | |
11821 | unexpectedly generous and gives us a bigger reply than we | |
11822 | asked for, we don't want to crash. */ | |
11823 | rslt = hex2bin (target_buf, buf, len); | |
11824 | return rslt; | |
11825 | } | |
11826 | ||
11827 | /* Something went wrong, flag as an error. */ | |
11828 | return -1; | |
11829 | } | |
11830 | ||
11831 | static void | |
25e4902b | 11832 | remote_set_disconnected_tracing (struct target_ops *self, int val) |
cf7f2e2d JM |
11833 | { |
11834 | struct remote_state *rs = get_remote_state (); | |
11835 | ||
25e4902b | 11836 | if (packet_support (PACKET_DisconnectedTracing_feature) == PACKET_ENABLE) |
cf7f2e2d JM |
11837 | { |
11838 | char *reply; | |
11839 | ||
ef5ccd6c | 11840 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisconnected:%x", val); |
cf7f2e2d JM |
11841 | putpkt (rs->buf); |
11842 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11843 | if (*reply == '\0') | |
11844 | error (_("Target does not support this command.")); | |
11845 | if (strcmp (reply, "OK") != 0) | |
11846 | error (_("Bogus reply from target: %s"), reply); | |
11847 | } | |
11848 | else if (val) | |
11849 | warning (_("Target does not support disconnected tracing.")); | |
11850 | } | |
11851 | ||
11852 | static int | |
11853 | remote_core_of_thread (struct target_ops *ops, ptid_t ptid) | |
11854 | { | |
11855 | struct thread_info *info = find_thread_ptid (ptid); | |
11856 | ||
25e4902b AHJ |
11857 | if (info && info->priv) |
11858 | return info->priv->core; | |
cf7f2e2d JM |
11859 | return -1; |
11860 | } | |
11861 | ||
11862 | static void | |
25e4902b | 11863 | remote_set_circular_trace_buffer (struct target_ops *self, int val) |
cf7f2e2d JM |
11864 | { |
11865 | struct remote_state *rs = get_remote_state (); | |
11866 | char *reply; | |
11867 | ||
ef5ccd6c | 11868 | xsnprintf (rs->buf, get_remote_packet_size (), "QTBuffer:circular:%x", val); |
cf7f2e2d JM |
11869 | putpkt (rs->buf); |
11870 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11871 | if (*reply == '\0') | |
11872 | error (_("Target does not support this command.")); | |
11873 | if (strcmp (reply, "OK") != 0) | |
11874 | error (_("Bogus reply from target: %s"), reply); | |
11875 | } | |
11876 | ||
c50c785c | 11877 | static struct traceframe_info * |
25e4902b | 11878 | remote_traceframe_info (struct target_ops *self) |
c50c785c JM |
11879 | { |
11880 | char *text; | |
11881 | ||
11882 | text = target_read_stralloc (¤t_target, | |
11883 | TARGET_OBJECT_TRACEFRAME_INFO, NULL); | |
11884 | if (text != NULL) | |
11885 | { | |
11886 | struct traceframe_info *info; | |
11887 | struct cleanup *back_to = make_cleanup (xfree, text); | |
11888 | ||
11889 | info = parse_traceframe_info (text); | |
11890 | do_cleanups (back_to); | |
11891 | return info; | |
11892 | } | |
11893 | ||
11894 | return NULL; | |
11895 | } | |
11896 | ||
a45ae5f8 JM |
11897 | /* Handle the qTMinFTPILen packet. Returns the minimum length of |
11898 | instruction on which a fast tracepoint may be placed. Returns -1 | |
11899 | if the packet is not supported, and 0 if the minimum instruction | |
11900 | length is unknown. */ | |
11901 | ||
11902 | static int | |
25e4902b | 11903 | remote_get_min_fast_tracepoint_insn_len (struct target_ops *self) |
a45ae5f8 JM |
11904 | { |
11905 | struct remote_state *rs = get_remote_state (); | |
11906 | char *reply; | |
11907 | ||
ef5ccd6c JM |
11908 | /* If we're not debugging a process yet, the IPA can't be |
11909 | loaded. */ | |
11910 | if (!target_has_execution) | |
11911 | return 0; | |
11912 | ||
11913 | /* Make sure the remote is pointing at the right process. */ | |
11914 | set_general_process (); | |
11915 | ||
11916 | xsnprintf (rs->buf, get_remote_packet_size (), "qTMinFTPILen"); | |
a45ae5f8 JM |
11917 | putpkt (rs->buf); |
11918 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
11919 | if (*reply == '\0') | |
11920 | return -1; | |
11921 | else | |
11922 | { | |
11923 | ULONGEST min_insn_len; | |
11924 | ||
11925 | unpack_varlen_hex (reply, &min_insn_len); | |
11926 | ||
11927 | return (int) min_insn_len; | |
11928 | } | |
11929 | } | |
11930 | ||
ef5ccd6c | 11931 | static void |
25e4902b | 11932 | remote_set_trace_buffer_size (struct target_ops *self, LONGEST val) |
ef5ccd6c | 11933 | { |
25e4902b | 11934 | if (packet_support (PACKET_QTBuffer_size) != PACKET_DISABLE) |
ef5ccd6c JM |
11935 | { |
11936 | struct remote_state *rs = get_remote_state (); | |
11937 | char *buf = rs->buf; | |
11938 | char *endbuf = rs->buf + get_remote_packet_size (); | |
11939 | enum packet_result result; | |
11940 | ||
11941 | gdb_assert (val >= 0 || val == -1); | |
11942 | buf += xsnprintf (buf, endbuf - buf, "QTBuffer:size:"); | |
11943 | /* Send -1 as literal "-1" to avoid host size dependency. */ | |
11944 | if (val < 0) | |
11945 | { | |
11946 | *buf++ = '-'; | |
11947 | buf += hexnumstr (buf, (ULONGEST) -val); | |
11948 | } | |
11949 | else | |
11950 | buf += hexnumstr (buf, (ULONGEST) val); | |
11951 | ||
11952 | putpkt (rs->buf); | |
11953 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
11954 | result = packet_ok (rs->buf, | |
11955 | &remote_protocol_packets[PACKET_QTBuffer_size]); | |
11956 | ||
11957 | if (result != PACKET_OK) | |
11958 | warning (_("Bogus reply from target: %s"), rs->buf); | |
11959 | } | |
11960 | } | |
11961 | ||
a45ae5f8 | 11962 | static int |
25e4902b AHJ |
11963 | remote_set_trace_notes (struct target_ops *self, |
11964 | const char *user, const char *notes, | |
11965 | const char *stop_notes) | |
a45ae5f8 JM |
11966 | { |
11967 | struct remote_state *rs = get_remote_state (); | |
11968 | char *reply; | |
11969 | char *buf = rs->buf; | |
11970 | char *endbuf = rs->buf + get_remote_packet_size (); | |
11971 | int nbytes; | |
11972 | ||
11973 | buf += xsnprintf (buf, endbuf - buf, "QTNotes:"); | |
11974 | if (user) | |
11975 | { | |
11976 | buf += xsnprintf (buf, endbuf - buf, "user:"); | |
25e4902b | 11977 | nbytes = bin2hex ((gdb_byte *) user, buf, strlen (user)); |
a45ae5f8 JM |
11978 | buf += 2 * nbytes; |
11979 | *buf++ = ';'; | |
11980 | } | |
11981 | if (notes) | |
11982 | { | |
11983 | buf += xsnprintf (buf, endbuf - buf, "notes:"); | |
25e4902b | 11984 | nbytes = bin2hex ((gdb_byte *) notes, buf, strlen (notes)); |
a45ae5f8 JM |
11985 | buf += 2 * nbytes; |
11986 | *buf++ = ';'; | |
11987 | } | |
11988 | if (stop_notes) | |
11989 | { | |
11990 | buf += xsnprintf (buf, endbuf - buf, "tstop:"); | |
25e4902b | 11991 | nbytes = bin2hex ((gdb_byte *) stop_notes, buf, strlen (stop_notes)); |
a45ae5f8 JM |
11992 | buf += 2 * nbytes; |
11993 | *buf++ = ';'; | |
11994 | } | |
11995 | /* Ensure the buffer is terminated. */ | |
11996 | *buf = '\0'; | |
11997 | ||
11998 | putpkt (rs->buf); | |
11999 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
12000 | if (*reply == '\0') | |
12001 | return 0; | |
12002 | ||
12003 | if (strcmp (reply, "OK") != 0) | |
12004 | error (_("Bogus reply from target: %s"), reply); | |
12005 | ||
12006 | return 1; | |
12007 | } | |
12008 | ||
ef5ccd6c | 12009 | static int |
25e4902b | 12010 | remote_use_agent (struct target_ops *self, int use) |
ef5ccd6c | 12011 | { |
25e4902b | 12012 | if (packet_support (PACKET_QAgent) != PACKET_DISABLE) |
ef5ccd6c JM |
12013 | { |
12014 | struct remote_state *rs = get_remote_state (); | |
12015 | ||
12016 | /* If the stub supports QAgent. */ | |
12017 | xsnprintf (rs->buf, get_remote_packet_size (), "QAgent:%d", use); | |
12018 | putpkt (rs->buf); | |
12019 | getpkt (&rs->buf, &rs->buf_size, 0); | |
12020 | ||
12021 | if (strcmp (rs->buf, "OK") == 0) | |
12022 | { | |
12023 | use_agent = use; | |
12024 | return 1; | |
12025 | } | |
12026 | } | |
12027 | ||
12028 | return 0; | |
12029 | } | |
12030 | ||
12031 | static int | |
25e4902b | 12032 | remote_can_use_agent (struct target_ops *self) |
ef5ccd6c | 12033 | { |
25e4902b | 12034 | return (packet_support (PACKET_QAgent) != PACKET_DISABLE); |
ef5ccd6c JM |
12035 | } |
12036 | ||
12037 | struct btrace_target_info | |
12038 | { | |
12039 | /* The ptid of the traced thread. */ | |
12040 | ptid_t ptid; | |
25e4902b AHJ |
12041 | |
12042 | /* The obtained branch trace configuration. */ | |
12043 | struct btrace_config conf; | |
ef5ccd6c JM |
12044 | }; |
12045 | ||
25e4902b AHJ |
12046 | /* Reset our idea of our target's btrace configuration. */ |
12047 | ||
12048 | static void | |
12049 | remote_btrace_reset (void) | |
12050 | { | |
12051 | struct remote_state *rs = get_remote_state (); | |
12052 | ||
12053 | memset (&rs->btrace_config, 0, sizeof (rs->btrace_config)); | |
12054 | } | |
12055 | ||
ef5ccd6c JM |
12056 | /* Check whether the target supports branch tracing. */ |
12057 | ||
12058 | static int | |
25e4902b | 12059 | remote_supports_btrace (struct target_ops *self, enum btrace_format format) |
ef5ccd6c | 12060 | { |
25e4902b | 12061 | if (packet_support (PACKET_Qbtrace_off) != PACKET_ENABLE) |
ef5ccd6c | 12062 | return 0; |
25e4902b | 12063 | if (packet_support (PACKET_qXfer_btrace) != PACKET_ENABLE) |
ef5ccd6c JM |
12064 | return 0; |
12065 | ||
25e4902b AHJ |
12066 | switch (format) |
12067 | { | |
12068 | case BTRACE_FORMAT_NONE: | |
12069 | return 0; | |
12070 | ||
12071 | case BTRACE_FORMAT_BTS: | |
12072 | return (packet_support (PACKET_Qbtrace_bts) == PACKET_ENABLE); | |
12073 | ||
12074 | case BTRACE_FORMAT_PT: | |
12075 | /* The trace is decoded on the host. Even if our target supports it, | |
12076 | we still need to have libipt to decode the trace. */ | |
12077 | #if defined (HAVE_LIBIPT) | |
12078 | return (packet_support (PACKET_Qbtrace_pt) == PACKET_ENABLE); | |
12079 | #else /* !defined (HAVE_LIBIPT) */ | |
12080 | return 0; | |
12081 | #endif /* !defined (HAVE_LIBIPT) */ | |
12082 | } | |
12083 | ||
12084 | internal_error (__FILE__, __LINE__, _("Unknown branch trace format")); | |
12085 | } | |
12086 | ||
12087 | /* Synchronize the configuration with the target. */ | |
12088 | ||
12089 | static void | |
12090 | btrace_sync_conf (const struct btrace_config *conf) | |
12091 | { | |
12092 | struct packet_config *packet; | |
12093 | struct remote_state *rs; | |
12094 | char *buf, *pos, *endbuf; | |
12095 | ||
12096 | rs = get_remote_state (); | |
12097 | buf = rs->buf; | |
12098 | endbuf = buf + get_remote_packet_size (); | |
12099 | ||
12100 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_bts_size]; | |
12101 | if (packet_config_support (packet) == PACKET_ENABLE | |
12102 | && conf->bts.size != rs->btrace_config.bts.size) | |
12103 | { | |
12104 | pos = buf; | |
12105 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
12106 | conf->bts.size); | |
12107 | ||
12108 | putpkt (buf); | |
12109 | getpkt (&buf, &rs->buf_size, 0); | |
12110 | ||
12111 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
12112 | { | |
12113 | if (buf[0] == 'E' && buf[1] == '.') | |
12114 | error (_("Failed to configure the BTS buffer size: %s"), buf + 2); | |
12115 | else | |
12116 | error (_("Failed to configure the BTS buffer size.")); | |
12117 | } | |
12118 | ||
12119 | rs->btrace_config.bts.size = conf->bts.size; | |
12120 | } | |
12121 | ||
12122 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_pt_size]; | |
12123 | if (packet_config_support (packet) == PACKET_ENABLE | |
12124 | && conf->pt.size != rs->btrace_config.pt.size) | |
12125 | { | |
12126 | pos = buf; | |
12127 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
12128 | conf->pt.size); | |
12129 | ||
12130 | putpkt (buf); | |
12131 | getpkt (&buf, &rs->buf_size, 0); | |
12132 | ||
12133 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
12134 | { | |
12135 | if (buf[0] == 'E' && buf[1] == '.') | |
12136 | error (_("Failed to configure the trace buffer size: %s"), buf + 2); | |
12137 | else | |
12138 | error (_("Failed to configure the trace buffer size.")); | |
12139 | } | |
12140 | ||
12141 | rs->btrace_config.pt.size = conf->pt.size; | |
12142 | } | |
12143 | } | |
12144 | ||
12145 | /* Read the current thread's btrace configuration from the target and | |
12146 | store it into CONF. */ | |
12147 | ||
12148 | static void | |
12149 | btrace_read_config (struct btrace_config *conf) | |
12150 | { | |
12151 | char *xml; | |
12152 | ||
12153 | xml = target_read_stralloc (¤t_target, | |
12154 | TARGET_OBJECT_BTRACE_CONF, ""); | |
12155 | if (xml != NULL) | |
12156 | { | |
12157 | struct cleanup *cleanup; | |
12158 | ||
12159 | cleanup = make_cleanup (xfree, xml); | |
12160 | parse_xml_btrace_conf (conf, xml); | |
12161 | do_cleanups (cleanup); | |
12162 | } | |
ef5ccd6c JM |
12163 | } |
12164 | ||
12165 | /* Enable branch tracing. */ | |
12166 | ||
12167 | static struct btrace_target_info * | |
25e4902b AHJ |
12168 | remote_enable_btrace (struct target_ops *self, ptid_t ptid, |
12169 | const struct btrace_config *conf) | |
ef5ccd6c JM |
12170 | { |
12171 | struct btrace_target_info *tinfo = NULL; | |
25e4902b | 12172 | struct packet_config *packet = NULL; |
ef5ccd6c JM |
12173 | struct remote_state *rs = get_remote_state (); |
12174 | char *buf = rs->buf; | |
12175 | char *endbuf = rs->buf + get_remote_packet_size (); | |
12176 | ||
25e4902b AHJ |
12177 | switch (conf->format) |
12178 | { | |
12179 | case BTRACE_FORMAT_BTS: | |
12180 | packet = &remote_protocol_packets[PACKET_Qbtrace_bts]; | |
12181 | break; | |
12182 | ||
12183 | case BTRACE_FORMAT_PT: | |
12184 | packet = &remote_protocol_packets[PACKET_Qbtrace_pt]; | |
12185 | break; | |
12186 | } | |
12187 | ||
12188 | if (packet == NULL || packet_config_support (packet) != PACKET_ENABLE) | |
ef5ccd6c JM |
12189 | error (_("Target does not support branch tracing.")); |
12190 | ||
25e4902b AHJ |
12191 | btrace_sync_conf (conf); |
12192 | ||
ef5ccd6c JM |
12193 | set_general_thread (ptid); |
12194 | ||
12195 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
12196 | putpkt (rs->buf); | |
12197 | getpkt (&rs->buf, &rs->buf_size, 0); | |
12198 | ||
12199 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
12200 | { | |
12201 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
12202 | error (_("Could not enable branch tracing for %s: %s"), | |
12203 | target_pid_to_str (ptid), rs->buf + 2); | |
12204 | else | |
12205 | error (_("Could not enable branch tracing for %s."), | |
12206 | target_pid_to_str (ptid)); | |
12207 | } | |
12208 | ||
12209 | tinfo = xzalloc (sizeof (*tinfo)); | |
12210 | tinfo->ptid = ptid; | |
12211 | ||
25e4902b AHJ |
12212 | /* If we fail to read the configuration, we lose some information, but the |
12213 | tracing itself is not impacted. */ | |
12214 | TRY | |
12215 | { | |
12216 | btrace_read_config (&tinfo->conf); | |
12217 | } | |
12218 | CATCH (err, RETURN_MASK_ERROR) | |
12219 | { | |
12220 | if (err.message != NULL) | |
12221 | warning ("%s", err.message); | |
12222 | } | |
12223 | END_CATCH | |
12224 | ||
ef5ccd6c JM |
12225 | return tinfo; |
12226 | } | |
12227 | ||
12228 | /* Disable branch tracing. */ | |
12229 | ||
12230 | static void | |
25e4902b AHJ |
12231 | remote_disable_btrace (struct target_ops *self, |
12232 | struct btrace_target_info *tinfo) | |
ef5ccd6c JM |
12233 | { |
12234 | struct packet_config *packet = &remote_protocol_packets[PACKET_Qbtrace_off]; | |
12235 | struct remote_state *rs = get_remote_state (); | |
12236 | char *buf = rs->buf; | |
12237 | char *endbuf = rs->buf + get_remote_packet_size (); | |
12238 | ||
25e4902b | 12239 | if (packet_config_support (packet) != PACKET_ENABLE) |
ef5ccd6c JM |
12240 | error (_("Target does not support branch tracing.")); |
12241 | ||
12242 | set_general_thread (tinfo->ptid); | |
12243 | ||
12244 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
12245 | putpkt (rs->buf); | |
12246 | getpkt (&rs->buf, &rs->buf_size, 0); | |
12247 | ||
12248 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
12249 | { | |
12250 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
12251 | error (_("Could not disable branch tracing for %s: %s"), | |
12252 | target_pid_to_str (tinfo->ptid), rs->buf + 2); | |
12253 | else | |
12254 | error (_("Could not disable branch tracing for %s."), | |
12255 | target_pid_to_str (tinfo->ptid)); | |
12256 | } | |
12257 | ||
12258 | xfree (tinfo); | |
12259 | } | |
12260 | ||
12261 | /* Teardown branch tracing. */ | |
12262 | ||
12263 | static void | |
25e4902b AHJ |
12264 | remote_teardown_btrace (struct target_ops *self, |
12265 | struct btrace_target_info *tinfo) | |
ef5ccd6c JM |
12266 | { |
12267 | /* We must not talk to the target during teardown. */ | |
12268 | xfree (tinfo); | |
12269 | } | |
12270 | ||
12271 | /* Read the branch trace. */ | |
12272 | ||
25e4902b AHJ |
12273 | static enum btrace_error |
12274 | remote_read_btrace (struct target_ops *self, | |
12275 | struct btrace_data *btrace, | |
12276 | struct btrace_target_info *tinfo, | |
ef5ccd6c JM |
12277 | enum btrace_read_type type) |
12278 | { | |
12279 | struct packet_config *packet = &remote_protocol_packets[PACKET_qXfer_btrace]; | |
12280 | struct remote_state *rs = get_remote_state (); | |
25e4902b | 12281 | struct cleanup *cleanup; |
ef5ccd6c JM |
12282 | const char *annex; |
12283 | char *xml; | |
12284 | ||
25e4902b | 12285 | if (packet_config_support (packet) != PACKET_ENABLE) |
ef5ccd6c JM |
12286 | error (_("Target does not support branch tracing.")); |
12287 | ||
12288 | #if !defined(HAVE_LIBEXPAT) | |
12289 | error (_("Cannot process branch tracing result. XML parsing not supported.")); | |
12290 | #endif | |
12291 | ||
12292 | switch (type) | |
12293 | { | |
25e4902b | 12294 | case BTRACE_READ_ALL: |
ef5ccd6c JM |
12295 | annex = "all"; |
12296 | break; | |
25e4902b | 12297 | case BTRACE_READ_NEW: |
ef5ccd6c JM |
12298 | annex = "new"; |
12299 | break; | |
25e4902b AHJ |
12300 | case BTRACE_READ_DELTA: |
12301 | annex = "delta"; | |
12302 | break; | |
ef5ccd6c JM |
12303 | default: |
12304 | internal_error (__FILE__, __LINE__, | |
12305 | _("Bad branch tracing read type: %u."), | |
12306 | (unsigned int) type); | |
12307 | } | |
12308 | ||
12309 | xml = target_read_stralloc (¤t_target, | |
25e4902b AHJ |
12310 | TARGET_OBJECT_BTRACE, annex); |
12311 | if (xml == NULL) | |
12312 | return BTRACE_ERR_UNKNOWN; | |
12313 | ||
12314 | cleanup = make_cleanup (xfree, xml); | |
12315 | parse_xml_btrace (btrace, xml); | |
12316 | do_cleanups (cleanup); | |
12317 | ||
12318 | return BTRACE_ERR_NONE; | |
12319 | } | |
12320 | ||
12321 | static const struct btrace_config * | |
12322 | remote_btrace_conf (struct target_ops *self, | |
12323 | const struct btrace_target_info *tinfo) | |
12324 | { | |
12325 | return &tinfo->conf; | |
12326 | } | |
12327 | ||
12328 | static int | |
12329 | remote_augmented_libraries_svr4_read (struct target_ops *self) | |
12330 | { | |
12331 | return (packet_support (PACKET_augmented_libraries_svr4_read_feature) | |
12332 | == PACKET_ENABLE); | |
12333 | } | |
12334 | ||
12335 | /* Implementation of to_load. */ | |
12336 | ||
12337 | static void | |
12338 | remote_load (struct target_ops *self, const char *name, int from_tty) | |
12339 | { | |
12340 | generic_load (name, from_tty); | |
12341 | } | |
12342 | ||
12343 | /* Accepts an integer PID; returns a string representing a file that | |
12344 | can be opened on the remote side to get the symbols for the child | |
12345 | process. Returns NULL if the operation is not supported. */ | |
12346 | ||
12347 | static char * | |
12348 | remote_pid_to_exec_file (struct target_ops *self, int pid) | |
12349 | { | |
12350 | static char *filename = NULL; | |
12351 | struct inferior *inf; | |
12352 | char *annex = NULL; | |
12353 | ||
12354 | if (packet_support (PACKET_qXfer_exec_file) != PACKET_ENABLE) | |
12355 | return NULL; | |
12356 | ||
12357 | if (filename != NULL) | |
12358 | xfree (filename); | |
12359 | ||
12360 | inf = find_inferior_pid (pid); | |
12361 | if (inf == NULL) | |
12362 | internal_error (__FILE__, __LINE__, | |
12363 | _("not currently attached to process %d"), pid); | |
12364 | ||
12365 | if (!inf->fake_pid_p) | |
ef5ccd6c | 12366 | { |
25e4902b | 12367 | const int annex_size = 9; |
ef5ccd6c | 12368 | |
25e4902b AHJ |
12369 | annex = alloca (annex_size); |
12370 | xsnprintf (annex, annex_size, "%x", pid); | |
ef5ccd6c JM |
12371 | } |
12372 | ||
25e4902b AHJ |
12373 | filename = target_read_stralloc (¤t_target, |
12374 | TARGET_OBJECT_EXEC_FILE, annex); | |
12375 | ||
12376 | return filename; | |
ef5ccd6c JM |
12377 | } |
12378 | ||
5796c8dc SS |
12379 | static void |
12380 | init_remote_ops (void) | |
12381 | { | |
12382 | remote_ops.to_shortname = "remote"; | |
12383 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; | |
12384 | remote_ops.to_doc = | |
12385 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ | |
12386 | Specify the serial device it is connected to\n\ | |
12387 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
12388 | remote_ops.to_open = remote_open; | |
12389 | remote_ops.to_close = remote_close; | |
12390 | remote_ops.to_detach = remote_detach; | |
12391 | remote_ops.to_disconnect = remote_disconnect; | |
12392 | remote_ops.to_resume = remote_resume; | |
12393 | remote_ops.to_wait = remote_wait; | |
12394 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
12395 | remote_ops.to_store_registers = remote_store_registers; | |
12396 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
5796c8dc SS |
12397 | remote_ops.to_files_info = remote_files_info; |
12398 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; | |
12399 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
25e4902b AHJ |
12400 | remote_ops.to_stopped_by_sw_breakpoint = remote_stopped_by_sw_breakpoint; |
12401 | remote_ops.to_supports_stopped_by_sw_breakpoint = remote_supports_stopped_by_sw_breakpoint; | |
12402 | remote_ops.to_stopped_by_hw_breakpoint = remote_stopped_by_hw_breakpoint; | |
12403 | remote_ops.to_supports_stopped_by_hw_breakpoint = remote_supports_stopped_by_hw_breakpoint; | |
5796c8dc SS |
12404 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
12405 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
ef5ccd6c JM |
12406 | remote_ops.to_watchpoint_addr_within_range = |
12407 | remote_watchpoint_addr_within_range; | |
5796c8dc SS |
12408 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
12409 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
12410 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
a45ae5f8 JM |
12411 | remote_ops.to_region_ok_for_hw_watchpoint |
12412 | = remote_region_ok_for_hw_watchpoint; | |
5796c8dc SS |
12413 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; |
12414 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
12415 | remote_ops.to_kill = remote_kill; | |
25e4902b | 12416 | remote_ops.to_load = remote_load; |
5796c8dc | 12417 | remote_ops.to_mourn_inferior = remote_mourn; |
a45ae5f8 | 12418 | remote_ops.to_pass_signals = remote_pass_signals; |
ef5ccd6c | 12419 | remote_ops.to_program_signals = remote_program_signals; |
5796c8dc | 12420 | remote_ops.to_thread_alive = remote_thread_alive; |
25e4902b | 12421 | remote_ops.to_update_thread_list = remote_update_thread_list; |
5796c8dc SS |
12422 | remote_ops.to_pid_to_str = remote_pid_to_str; |
12423 | remote_ops.to_extra_thread_info = remote_threads_extra_info; | |
cf7f2e2d | 12424 | remote_ops.to_get_ada_task_ptid = remote_get_ada_task_ptid; |
5796c8dc | 12425 | remote_ops.to_stop = remote_stop; |
25e4902b | 12426 | remote_ops.to_check_pending_interrupt = remote_check_pending_interrupt; |
5796c8dc SS |
12427 | remote_ops.to_xfer_partial = remote_xfer_partial; |
12428 | remote_ops.to_rcmd = remote_rcmd; | |
25e4902b | 12429 | remote_ops.to_pid_to_exec_file = remote_pid_to_exec_file; |
5796c8dc SS |
12430 | remote_ops.to_log_command = serial_log_command; |
12431 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; | |
12432 | remote_ops.to_stratum = process_stratum; | |
12433 | remote_ops.to_has_all_memory = default_child_has_all_memory; | |
12434 | remote_ops.to_has_memory = default_child_has_memory; | |
12435 | remote_ops.to_has_stack = default_child_has_stack; | |
12436 | remote_ops.to_has_registers = default_child_has_registers; | |
12437 | remote_ops.to_has_execution = default_child_has_execution; | |
c50c785c | 12438 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ |
5796c8dc SS |
12439 | remote_ops.to_can_execute_reverse = remote_can_execute_reverse; |
12440 | remote_ops.to_magic = OPS_MAGIC; | |
12441 | remote_ops.to_memory_map = remote_memory_map; | |
12442 | remote_ops.to_flash_erase = remote_flash_erase; | |
12443 | remote_ops.to_flash_done = remote_flash_done; | |
12444 | remote_ops.to_read_description = remote_read_description; | |
12445 | remote_ops.to_search_memory = remote_search_memory; | |
12446 | remote_ops.to_can_async_p = remote_can_async_p; | |
12447 | remote_ops.to_is_async_p = remote_is_async_p; | |
12448 | remote_ops.to_async = remote_async; | |
5796c8dc SS |
12449 | remote_ops.to_terminal_inferior = remote_terminal_inferior; |
12450 | remote_ops.to_terminal_ours = remote_terminal_ours; | |
12451 | remote_ops.to_supports_non_stop = remote_supports_non_stop; | |
12452 | remote_ops.to_supports_multi_process = remote_supports_multi_process; | |
a45ae5f8 JM |
12453 | remote_ops.to_supports_disable_randomization |
12454 | = remote_supports_disable_randomization; | |
25e4902b | 12455 | remote_ops.to_filesystem_is_local = remote_filesystem_is_local; |
ef5ccd6c JM |
12456 | remote_ops.to_fileio_open = remote_hostio_open; |
12457 | remote_ops.to_fileio_pwrite = remote_hostio_pwrite; | |
12458 | remote_ops.to_fileio_pread = remote_hostio_pread; | |
25e4902b | 12459 | remote_ops.to_fileio_fstat = remote_hostio_fstat; |
ef5ccd6c JM |
12460 | remote_ops.to_fileio_close = remote_hostio_close; |
12461 | remote_ops.to_fileio_unlink = remote_hostio_unlink; | |
12462 | remote_ops.to_fileio_readlink = remote_hostio_readlink; | |
a45ae5f8 JM |
12463 | remote_ops.to_supports_enable_disable_tracepoint = remote_supports_enable_disable_tracepoint; |
12464 | remote_ops.to_supports_string_tracing = remote_supports_string_tracing; | |
ef5ccd6c JM |
12465 | remote_ops.to_supports_evaluation_of_breakpoint_conditions = remote_supports_cond_breakpoints; |
12466 | remote_ops.to_can_run_breakpoint_commands = remote_can_run_breakpoint_commands; | |
cf7f2e2d JM |
12467 | remote_ops.to_trace_init = remote_trace_init; |
12468 | remote_ops.to_download_tracepoint = remote_download_tracepoint; | |
a45ae5f8 | 12469 | remote_ops.to_can_download_tracepoint = remote_can_download_tracepoint; |
c50c785c JM |
12470 | remote_ops.to_download_trace_state_variable |
12471 | = remote_download_trace_state_variable; | |
a45ae5f8 JM |
12472 | remote_ops.to_enable_tracepoint = remote_enable_tracepoint; |
12473 | remote_ops.to_disable_tracepoint = remote_disable_tracepoint; | |
cf7f2e2d JM |
12474 | remote_ops.to_trace_set_readonly_regions = remote_trace_set_readonly_regions; |
12475 | remote_ops.to_trace_start = remote_trace_start; | |
12476 | remote_ops.to_get_trace_status = remote_get_trace_status; | |
a45ae5f8 | 12477 | remote_ops.to_get_tracepoint_status = remote_get_tracepoint_status; |
cf7f2e2d JM |
12478 | remote_ops.to_trace_stop = remote_trace_stop; |
12479 | remote_ops.to_trace_find = remote_trace_find; | |
c50c785c JM |
12480 | remote_ops.to_get_trace_state_variable_value |
12481 | = remote_get_trace_state_variable_value; | |
cf7f2e2d JM |
12482 | remote_ops.to_save_trace_data = remote_save_trace_data; |
12483 | remote_ops.to_upload_tracepoints = remote_upload_tracepoints; | |
c50c785c JM |
12484 | remote_ops.to_upload_trace_state_variables |
12485 | = remote_upload_trace_state_variables; | |
cf7f2e2d | 12486 | remote_ops.to_get_raw_trace_data = remote_get_raw_trace_data; |
a45ae5f8 | 12487 | remote_ops.to_get_min_fast_tracepoint_insn_len = remote_get_min_fast_tracepoint_insn_len; |
cf7f2e2d JM |
12488 | remote_ops.to_set_disconnected_tracing = remote_set_disconnected_tracing; |
12489 | remote_ops.to_set_circular_trace_buffer = remote_set_circular_trace_buffer; | |
ef5ccd6c | 12490 | remote_ops.to_set_trace_buffer_size = remote_set_trace_buffer_size; |
a45ae5f8 | 12491 | remote_ops.to_set_trace_notes = remote_set_trace_notes; |
cf7f2e2d JM |
12492 | remote_ops.to_core_of_thread = remote_core_of_thread; |
12493 | remote_ops.to_verify_memory = remote_verify_memory; | |
12494 | remote_ops.to_get_tib_address = remote_get_tib_address; | |
12495 | remote_ops.to_set_permissions = remote_set_permissions; | |
12496 | remote_ops.to_static_tracepoint_marker_at | |
12497 | = remote_static_tracepoint_marker_at; | |
12498 | remote_ops.to_static_tracepoint_markers_by_strid | |
12499 | = remote_static_tracepoint_markers_by_strid; | |
c50c785c | 12500 | remote_ops.to_traceframe_info = remote_traceframe_info; |
ef5ccd6c JM |
12501 | remote_ops.to_use_agent = remote_use_agent; |
12502 | remote_ops.to_can_use_agent = remote_can_use_agent; | |
12503 | remote_ops.to_supports_btrace = remote_supports_btrace; | |
12504 | remote_ops.to_enable_btrace = remote_enable_btrace; | |
12505 | remote_ops.to_disable_btrace = remote_disable_btrace; | |
12506 | remote_ops.to_teardown_btrace = remote_teardown_btrace; | |
12507 | remote_ops.to_read_btrace = remote_read_btrace; | |
25e4902b AHJ |
12508 | remote_ops.to_btrace_conf = remote_btrace_conf; |
12509 | remote_ops.to_augmented_libraries_svr4_read = | |
12510 | remote_augmented_libraries_svr4_read; | |
5796c8dc SS |
12511 | } |
12512 | ||
12513 | /* Set up the extended remote vector by making a copy of the standard | |
12514 | remote vector and adding to it. */ | |
12515 | ||
12516 | static void | |
12517 | init_extended_remote_ops (void) | |
12518 | { | |
12519 | extended_remote_ops = remote_ops; | |
12520 | ||
12521 | extended_remote_ops.to_shortname = "extended-remote"; | |
12522 | extended_remote_ops.to_longname = | |
12523 | "Extended remote serial target in gdb-specific protocol"; | |
12524 | extended_remote_ops.to_doc = | |
12525 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ | |
12526 | Specify the serial device it is connected to (e.g. /dev/ttya)."; | |
12527 | extended_remote_ops.to_open = extended_remote_open; | |
12528 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; | |
12529 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
12530 | extended_remote_ops.to_detach = extended_remote_detach; | |
12531 | extended_remote_ops.to_attach = extended_remote_attach; | |
25e4902b | 12532 | extended_remote_ops.to_post_attach = extended_remote_post_attach; |
5796c8dc | 12533 | extended_remote_ops.to_kill = extended_remote_kill; |
a45ae5f8 JM |
12534 | extended_remote_ops.to_supports_disable_randomization |
12535 | = extended_remote_supports_disable_randomization; | |
25e4902b AHJ |
12536 | extended_remote_ops.to_follow_fork = remote_follow_fork; |
12537 | extended_remote_ops.to_insert_fork_catchpoint | |
12538 | = remote_insert_fork_catchpoint; | |
12539 | extended_remote_ops.to_remove_fork_catchpoint | |
12540 | = remote_remove_fork_catchpoint; | |
12541 | extended_remote_ops.to_insert_vfork_catchpoint | |
12542 | = remote_insert_vfork_catchpoint; | |
12543 | extended_remote_ops.to_remove_vfork_catchpoint | |
12544 | = remote_remove_vfork_catchpoint; | |
5796c8dc SS |
12545 | } |
12546 | ||
12547 | static int | |
25e4902b | 12548 | remote_can_async_p (struct target_ops *ops) |
5796c8dc | 12549 | { |
25e4902b AHJ |
12550 | struct remote_state *rs = get_remote_state (); |
12551 | ||
5796c8dc SS |
12552 | if (!target_async_permitted) |
12553 | /* We only enable async when the user specifically asks for it. */ | |
12554 | return 0; | |
12555 | ||
12556 | /* We're async whenever the serial device is. */ | |
25e4902b | 12557 | return serial_can_async_p (rs->remote_desc); |
5796c8dc SS |
12558 | } |
12559 | ||
12560 | static int | |
25e4902b | 12561 | remote_is_async_p (struct target_ops *ops) |
5796c8dc | 12562 | { |
25e4902b AHJ |
12563 | struct remote_state *rs = get_remote_state (); |
12564 | ||
5796c8dc SS |
12565 | if (!target_async_permitted) |
12566 | /* We only enable async when the user specifically asks for it. */ | |
12567 | return 0; | |
12568 | ||
12569 | /* We're async whenever the serial device is. */ | |
25e4902b | 12570 | return serial_is_async_p (rs->remote_desc); |
5796c8dc SS |
12571 | } |
12572 | ||
12573 | /* Pass the SERIAL event on and up to the client. One day this code | |
12574 | will be able to delay notifying the client of an event until the | |
12575 | point where an entire packet has been received. */ | |
12576 | ||
5796c8dc SS |
12577 | static serial_event_ftype remote_async_serial_handler; |
12578 | ||
12579 | static void | |
12580 | remote_async_serial_handler (struct serial *scb, void *context) | |
12581 | { | |
25e4902b AHJ |
12582 | struct remote_state *rs = context; |
12583 | ||
5796c8dc SS |
12584 | /* Don't propogate error information up to the client. Instead let |
12585 | the client find out about the error by querying the target. */ | |
25e4902b | 12586 | inferior_event_handler (INF_REG_EVENT, NULL); |
5796c8dc SS |
12587 | } |
12588 | ||
12589 | static void | |
12590 | remote_async_inferior_event_handler (gdb_client_data data) | |
12591 | { | |
12592 | inferior_event_handler (INF_REG_EVENT, NULL); | |
12593 | } | |
12594 | ||
5796c8dc | 12595 | static void |
25e4902b | 12596 | remote_async (struct target_ops *ops, int enable) |
5796c8dc | 12597 | { |
25e4902b AHJ |
12598 | struct remote_state *rs = get_remote_state (); |
12599 | ||
12600 | if (enable) | |
5796c8dc | 12601 | { |
25e4902b AHJ |
12602 | serial_async (rs->remote_desc, remote_async_serial_handler, rs); |
12603 | ||
12604 | /* If there are pending events in the stop reply queue tell the | |
12605 | event loop to process them. */ | |
12606 | if (!QUEUE_is_empty (stop_reply_p, stop_reply_queue)) | |
12607 | mark_async_event_handler (remote_async_inferior_event_token); | |
5796c8dc SS |
12608 | } |
12609 | else | |
25e4902b AHJ |
12610 | { |
12611 | serial_async (rs->remote_desc, NULL, NULL); | |
12612 | clear_async_event_handler (remote_async_inferior_event_token); | |
12613 | } | |
5796c8dc SS |
12614 | } |
12615 | ||
5796c8dc SS |
12616 | static void |
12617 | set_remote_cmd (char *args, int from_tty) | |
12618 | { | |
25e4902b | 12619 | help_list (remote_set_cmdlist, "set remote ", all_commands, gdb_stdout); |
5796c8dc SS |
12620 | } |
12621 | ||
12622 | static void | |
12623 | show_remote_cmd (char *args, int from_tty) | |
12624 | { | |
12625 | /* We can't just use cmd_show_list here, because we want to skip | |
12626 | the redundant "show remote Z-packet" and the legacy aliases. */ | |
12627 | struct cleanup *showlist_chain; | |
12628 | struct cmd_list_element *list = remote_show_cmdlist; | |
a45ae5f8 | 12629 | struct ui_out *uiout = current_uiout; |
5796c8dc SS |
12630 | |
12631 | showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist"); | |
12632 | for (; list != NULL; list = list->next) | |
12633 | if (strcmp (list->name, "Z-packet") == 0) | |
12634 | continue; | |
12635 | else if (list->type == not_set_cmd) | |
12636 | /* Alias commands are exactly like the original, except they | |
12637 | don't have the normal type. */ | |
12638 | continue; | |
12639 | else | |
12640 | { | |
12641 | struct cleanup *option_chain | |
12642 | = make_cleanup_ui_out_tuple_begin_end (uiout, "option"); | |
cf7f2e2d | 12643 | |
5796c8dc SS |
12644 | ui_out_field_string (uiout, "name", list->name); |
12645 | ui_out_text (uiout, ": "); | |
12646 | if (list->type == show_cmd) | |
ef5ccd6c | 12647 | do_show_command ((char *) NULL, from_tty, list); |
5796c8dc SS |
12648 | else |
12649 | cmd_func (list, NULL, from_tty); | |
12650 | /* Close the tuple. */ | |
12651 | do_cleanups (option_chain); | |
12652 | } | |
12653 | ||
12654 | /* Close the tuple. */ | |
12655 | do_cleanups (showlist_chain); | |
12656 | } | |
12657 | ||
12658 | ||
12659 | /* Function to be called whenever a new objfile (shlib) is detected. */ | |
12660 | static void | |
12661 | remote_new_objfile (struct objfile *objfile) | |
12662 | { | |
25e4902b AHJ |
12663 | struct remote_state *rs = get_remote_state (); |
12664 | ||
12665 | if (rs->remote_desc != 0) /* Have a remote connection. */ | |
12666 | remote_check_symbols (); | |
5796c8dc SS |
12667 | } |
12668 | ||
cf7f2e2d JM |
12669 | /* Pull all the tracepoints defined on the target and create local |
12670 | data structures representing them. We don't want to create real | |
12671 | tracepoints yet, we don't want to mess up the user's existing | |
12672 | collection. */ | |
12673 | ||
12674 | static int | |
25e4902b | 12675 | remote_upload_tracepoints (struct target_ops *self, struct uploaded_tp **utpp) |
cf7f2e2d JM |
12676 | { |
12677 | struct remote_state *rs = get_remote_state (); | |
12678 | char *p; | |
12679 | ||
12680 | /* Ask for a first packet of tracepoint definition. */ | |
12681 | putpkt ("qTfP"); | |
12682 | getpkt (&rs->buf, &rs->buf_size, 0); | |
12683 | p = rs->buf; | |
12684 | while (*p && *p != 'l') | |
12685 | { | |
12686 | parse_tracepoint_definition (p, utpp); | |
12687 | /* Ask for another packet of tracepoint definition. */ | |
12688 | putpkt ("qTsP"); | |
12689 | getpkt (&rs->buf, &rs->buf_size, 0); | |
12690 | p = rs->buf; | |
12691 | } | |
12692 | return 0; | |
12693 | } | |
12694 | ||
12695 | static int | |
25e4902b AHJ |
12696 | remote_upload_trace_state_variables (struct target_ops *self, |
12697 | struct uploaded_tsv **utsvp) | |
cf7f2e2d JM |
12698 | { |
12699 | struct remote_state *rs = get_remote_state (); | |
12700 | char *p; | |
12701 | ||
12702 | /* Ask for a first packet of variable definition. */ | |
12703 | putpkt ("qTfV"); | |
12704 | getpkt (&rs->buf, &rs->buf_size, 0); | |
12705 | p = rs->buf; | |
12706 | while (*p && *p != 'l') | |
12707 | { | |
12708 | parse_tsv_definition (p, utsvp); | |
12709 | /* Ask for another packet of variable definition. */ | |
12710 | putpkt ("qTsV"); | |
12711 | getpkt (&rs->buf, &rs->buf_size, 0); | |
12712 | p = rs->buf; | |
12713 | } | |
12714 | return 0; | |
12715 | } | |
12716 | ||
25e4902b AHJ |
12717 | /* The "set/show range-stepping" show hook. */ |
12718 | ||
12719 | static void | |
12720 | show_range_stepping (struct ui_file *file, int from_tty, | |
12721 | struct cmd_list_element *c, | |
12722 | const char *value) | |
12723 | { | |
12724 | fprintf_filtered (file, | |
12725 | _("Debugger's willingness to use range stepping " | |
12726 | "is %s.\n"), value); | |
12727 | } | |
12728 | ||
12729 | /* The "set/show range-stepping" set hook. */ | |
12730 | ||
12731 | static void | |
12732 | set_range_stepping (char *ignore_args, int from_tty, | |
12733 | struct cmd_list_element *c) | |
12734 | { | |
12735 | struct remote_state *rs = get_remote_state (); | |
12736 | ||
12737 | /* Whene enabling, check whether range stepping is actually | |
12738 | supported by the target, and warn if not. */ | |
12739 | if (use_range_stepping) | |
12740 | { | |
12741 | if (rs->remote_desc != NULL) | |
12742 | { | |
12743 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) | |
12744 | remote_vcont_probe (rs); | |
12745 | ||
12746 | if (packet_support (PACKET_vCont) == PACKET_ENABLE | |
12747 | && rs->supports_vCont.r) | |
12748 | return; | |
12749 | } | |
12750 | ||
12751 | warning (_("Range stepping is not supported by the current target")); | |
12752 | } | |
12753 | } | |
12754 | ||
5796c8dc SS |
12755 | void |
12756 | _initialize_remote (void) | |
12757 | { | |
12758 | struct remote_state *rs; | |
cf7f2e2d | 12759 | struct cmd_list_element *cmd; |
25e4902b | 12760 | const char *cmd_name; |
5796c8dc SS |
12761 | |
12762 | /* architecture specific data */ | |
12763 | remote_gdbarch_data_handle = | |
12764 | gdbarch_data_register_post_init (init_remote_state); | |
12765 | remote_g_packet_data_handle = | |
12766 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
12767 | ||
12768 | /* Initialize the per-target state. At the moment there is only one | |
12769 | of these, not one per target. Only one target is active at a | |
25e4902b AHJ |
12770 | time. */ |
12771 | remote_state = new_remote_state (); | |
5796c8dc SS |
12772 | |
12773 | init_remote_ops (); | |
12774 | add_target (&remote_ops); | |
12775 | ||
12776 | init_extended_remote_ops (); | |
12777 | add_target (&extended_remote_ops); | |
12778 | ||
12779 | /* Hook into new objfile notification. */ | |
12780 | observer_attach_new_objfile (remote_new_objfile); | |
ef5ccd6c JM |
12781 | /* We're no longer interested in notification events of an inferior |
12782 | when it exits. */ | |
12783 | observer_attach_inferior_exit (discard_pending_stop_replies); | |
5796c8dc SS |
12784 | |
12785 | /* Set up signal handlers. */ | |
25e4902b | 12786 | async_sigint_remote_token = |
5796c8dc | 12787 | create_async_signal_handler (async_remote_interrupt, NULL); |
25e4902b | 12788 | async_sigint_remote_twice_token = |
a45ae5f8 | 12789 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
5796c8dc SS |
12790 | |
12791 | #if 0 | |
12792 | init_remote_threadtests (); | |
12793 | #endif | |
12794 | ||
ef5ccd6c | 12795 | stop_reply_queue = QUEUE_alloc (stop_reply_p, stop_reply_xfree); |
5796c8dc SS |
12796 | /* set/show remote ... */ |
12797 | ||
12798 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ | |
12799 | Remote protocol specific variables\n\ | |
12800 | Configure various remote-protocol specific variables such as\n\ | |
12801 | the packets being used"), | |
12802 | &remote_set_cmdlist, "set remote ", | |
12803 | 0 /* allow-unknown */, &setlist); | |
12804 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ | |
12805 | Remote protocol specific variables\n\ | |
12806 | Configure various remote-protocol specific variables such as\n\ | |
12807 | the packets being used"), | |
12808 | &remote_show_cmdlist, "show remote ", | |
12809 | 0 /* allow-unknown */, &showlist); | |
12810 | ||
12811 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ | |
12812 | Compare section data on target to the exec file.\n\ | |
25e4902b AHJ |
12813 | Argument is a single section name (default: all loaded sections).\n\ |
12814 | To compare only read-only loaded sections, specify the -r option."), | |
5796c8dc SS |
12815 | &cmdlist); |
12816 | ||
12817 | add_cmd ("packet", class_maintenance, packet_command, _("\ | |
12818 | Send an arbitrary packet to a remote target.\n\ | |
12819 | maintenance packet TEXT\n\ | |
12820 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
12821 | this command sends the string TEXT to the inferior, and displays the\n\ | |
12822 | response packet. GDB supplies the initial `$' character, and the\n\ | |
12823 | terminating `#' character and checksum."), | |
12824 | &maintenancelist); | |
12825 | ||
12826 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ | |
12827 | Set whether to send break if interrupted."), _("\ | |
12828 | Show whether to send break if interrupted."), _("\ | |
12829 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
cf7f2e2d | 12830 | set_remotebreak, show_remotebreak, |
5796c8dc | 12831 | &setlist, &showlist); |
cf7f2e2d JM |
12832 | cmd_name = "remotebreak"; |
12833 | cmd = lookup_cmd (&cmd_name, setlist, "", -1, 1); | |
12834 | deprecate_cmd (cmd, "set remote interrupt-sequence"); | |
12835 | cmd_name = "remotebreak"; /* needed because lookup_cmd updates the pointer */ | |
12836 | cmd = lookup_cmd (&cmd_name, showlist, "", -1, 1); | |
12837 | deprecate_cmd (cmd, "show remote interrupt-sequence"); | |
12838 | ||
12839 | add_setshow_enum_cmd ("interrupt-sequence", class_support, | |
c50c785c JM |
12840 | interrupt_sequence_modes, &interrupt_sequence_mode, |
12841 | _("\ | |
cf7f2e2d JM |
12842 | Set interrupt sequence to remote target."), _("\ |
12843 | Show interrupt sequence to remote target."), _("\ | |
12844 | Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."), | |
12845 | NULL, show_interrupt_sequence, | |
12846 | &remote_set_cmdlist, | |
12847 | &remote_show_cmdlist); | |
12848 | ||
12849 | add_setshow_boolean_cmd ("interrupt-on-connect", class_support, | |
12850 | &interrupt_on_connect, _("\ | |
12851 | Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
12852 | Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
12853 | If set, interrupt sequence is sent to remote target."), | |
12854 | NULL, NULL, | |
12855 | &remote_set_cmdlist, &remote_show_cmdlist); | |
5796c8dc SS |
12856 | |
12857 | /* Install commands for configuring memory read/write packets. */ | |
12858 | ||
12859 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ | |
12860 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
12861 | &setlist); | |
12862 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ | |
12863 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
12864 | &showlist); | |
12865 | add_cmd ("memory-write-packet-size", no_class, | |
12866 | set_memory_write_packet_size, _("\ | |
12867 | Set the maximum number of bytes per memory-write packet.\n\ | |
12868 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
12869 | default packet size. The actual limit is further reduced\n\ | |
12870 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
12871 | further restriction and ``limit'' to enable that restriction."), | |
12872 | &remote_set_cmdlist); | |
12873 | add_cmd ("memory-read-packet-size", no_class, | |
12874 | set_memory_read_packet_size, _("\ | |
12875 | Set the maximum number of bytes per memory-read packet.\n\ | |
12876 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
12877 | default packet size. The actual limit is further reduced\n\ | |
12878 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
12879 | further restriction and ``limit'' to enable that restriction."), | |
12880 | &remote_set_cmdlist); | |
12881 | add_cmd ("memory-write-packet-size", no_class, | |
12882 | show_memory_write_packet_size, | |
12883 | _("Show the maximum number of bytes per memory-write packet."), | |
12884 | &remote_show_cmdlist); | |
12885 | add_cmd ("memory-read-packet-size", no_class, | |
12886 | show_memory_read_packet_size, | |
12887 | _("Show the maximum number of bytes per memory-read packet."), | |
12888 | &remote_show_cmdlist); | |
12889 | ||
12890 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, | |
12891 | &remote_hw_watchpoint_limit, _("\ | |
12892 | Set the maximum number of target hardware watchpoints."), _("\ | |
12893 | Show the maximum number of target hardware watchpoints."), _("\ | |
12894 | Specify a negative limit for unlimited."), | |
c50c785c JM |
12895 | NULL, NULL, /* FIXME: i18n: The maximum |
12896 | number of target hardware | |
12897 | watchpoints is %s. */ | |
5796c8dc | 12898 | &remote_set_cmdlist, &remote_show_cmdlist); |
a45ae5f8 JM |
12899 | add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class, |
12900 | &remote_hw_watchpoint_length_limit, _("\ | |
12901 | Set the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
12902 | Show the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
12903 | Specify a negative limit for unlimited."), | |
12904 | NULL, NULL, /* FIXME: i18n: The maximum | |
12905 | length (in bytes) of a target | |
12906 | hardware watchpoint is %s. */ | |
12907 | &remote_set_cmdlist, &remote_show_cmdlist); | |
5796c8dc SS |
12908 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, |
12909 | &remote_hw_breakpoint_limit, _("\ | |
12910 | Set the maximum number of target hardware breakpoints."), _("\ | |
12911 | Show the maximum number of target hardware breakpoints."), _("\ | |
12912 | Specify a negative limit for unlimited."), | |
c50c785c JM |
12913 | NULL, NULL, /* FIXME: i18n: The maximum |
12914 | number of target hardware | |
12915 | breakpoints is %s. */ | |
5796c8dc SS |
12916 | &remote_set_cmdlist, &remote_show_cmdlist); |
12917 | ||
25e4902b AHJ |
12918 | add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure, |
12919 | &remote_address_size, _("\ | |
5796c8dc SS |
12920 | Set the maximum size of the address (in bits) in a memory packet."), _("\ |
12921 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
25e4902b AHJ |
12922 | NULL, |
12923 | NULL, /* FIXME: i18n: */ | |
12924 | &setlist, &showlist); | |
12925 | ||
12926 | init_all_packet_configs (); | |
5796c8dc SS |
12927 | |
12928 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], | |
12929 | "X", "binary-download", 1); | |
12930 | ||
12931 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], | |
12932 | "vCont", "verbose-resume", 0); | |
12933 | ||
12934 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], | |
12935 | "QPassSignals", "pass-signals", 0); | |
12936 | ||
ef5ccd6c JM |
12937 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QProgramSignals], |
12938 | "QProgramSignals", "program-signals", 0); | |
12939 | ||
5796c8dc SS |
12940 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
12941 | "qSymbol", "symbol-lookup", 0); | |
12942 | ||
12943 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], | |
12944 | "P", "set-register", 1); | |
12945 | ||
12946 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], | |
12947 | "p", "fetch-register", 1); | |
12948 | ||
12949 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], | |
12950 | "Z0", "software-breakpoint", 0); | |
12951 | ||
12952 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], | |
12953 | "Z1", "hardware-breakpoint", 0); | |
12954 | ||
12955 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], | |
12956 | "Z2", "write-watchpoint", 0); | |
12957 | ||
12958 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], | |
12959 | "Z3", "read-watchpoint", 0); | |
12960 | ||
12961 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], | |
12962 | "Z4", "access-watchpoint", 0); | |
12963 | ||
12964 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], | |
12965 | "qXfer:auxv:read", "read-aux-vector", 0); | |
12966 | ||
25e4902b AHJ |
12967 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_exec_file], |
12968 | "qXfer:exec-file:read", "pid-to-exec-file", 0); | |
12969 | ||
5796c8dc SS |
12970 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
12971 | "qXfer:features:read", "target-features", 0); | |
12972 | ||
12973 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], | |
12974 | "qXfer:libraries:read", "library-info", 0); | |
12975 | ||
a45ae5f8 JM |
12976 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries_svr4], |
12977 | "qXfer:libraries-svr4:read", "library-info-svr4", 0); | |
12978 | ||
5796c8dc SS |
12979 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
12980 | "qXfer:memory-map:read", "memory-map", 0); | |
12981 | ||
12982 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_read], | |
12983 | "qXfer:spu:read", "read-spu-object", 0); | |
12984 | ||
12985 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_write], | |
12986 | "qXfer:spu:write", "write-spu-object", 0); | |
12987 | ||
12988 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata], | |
12989 | "qXfer:osdata:read", "osdata", 0); | |
12990 | ||
cf7f2e2d JM |
12991 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_threads], |
12992 | "qXfer:threads:read", "threads", 0); | |
12993 | ||
5796c8dc SS |
12994 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read], |
12995 | "qXfer:siginfo:read", "read-siginfo-object", 0); | |
12996 | ||
12997 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write], | |
12998 | "qXfer:siginfo:write", "write-siginfo-object", 0); | |
12999 | ||
c50c785c JM |
13000 | add_packet_config_cmd |
13001 | (&remote_protocol_packets[PACKET_qXfer_traceframe_info], | |
25e4902b | 13002 | "qXfer:traceframe-info:read", "traceframe-info", 0); |
c50c785c | 13003 | |
ef5ccd6c JM |
13004 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_uib], |
13005 | "qXfer:uib:read", "unwind-info-block", 0); | |
13006 | ||
5796c8dc SS |
13007 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
13008 | "qGetTLSAddr", "get-thread-local-storage-address", | |
13009 | 0); | |
13010 | ||
cf7f2e2d JM |
13011 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTIBAddr], |
13012 | "qGetTIBAddr", "get-thread-information-block-address", | |
13013 | 0); | |
13014 | ||
5796c8dc SS |
13015 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bc], |
13016 | "bc", "reverse-continue", 0); | |
13017 | ||
13018 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bs], | |
13019 | "bs", "reverse-step", 0); | |
13020 | ||
13021 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], | |
13022 | "qSupported", "supported-packets", 0); | |
13023 | ||
13024 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], | |
13025 | "qSearch:memory", "search-memory", 0); | |
13026 | ||
25e4902b AHJ |
13027 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qTStatus], |
13028 | "qTStatus", "trace-status", 0); | |
13029 | ||
13030 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_setfs], | |
13031 | "vFile:setfs", "hostio-setfs", 0); | |
13032 | ||
5796c8dc SS |
13033 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
13034 | "vFile:open", "hostio-open", 0); | |
13035 | ||
13036 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
13037 | "vFile:pread", "hostio-pread", 0); | |
13038 | ||
13039 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
13040 | "vFile:pwrite", "hostio-pwrite", 0); | |
13041 | ||
13042 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
13043 | "vFile:close", "hostio-close", 0); | |
13044 | ||
13045 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
13046 | "vFile:unlink", "hostio-unlink", 0); | |
13047 | ||
ef5ccd6c JM |
13048 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_readlink], |
13049 | "vFile:readlink", "hostio-readlink", 0); | |
13050 | ||
25e4902b AHJ |
13051 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_fstat], |
13052 | "vFile:fstat", "hostio-fstat", 0); | |
13053 | ||
5796c8dc SS |
13054 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
13055 | "vAttach", "attach", 0); | |
13056 | ||
13057 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
13058 | "vRun", "run", 0); | |
13059 | ||
13060 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode], | |
13061 | "QStartNoAckMode", "noack", 0); | |
13062 | ||
13063 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill], | |
13064 | "vKill", "kill", 0); | |
13065 | ||
13066 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached], | |
13067 | "qAttached", "query-attached", 0); | |
13068 | ||
13069 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints], | |
c50c785c JM |
13070 | "ConditionalTracepoints", |
13071 | "conditional-tracepoints", 0); | |
ef5ccd6c JM |
13072 | |
13073 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalBreakpoints], | |
13074 | "ConditionalBreakpoints", | |
13075 | "conditional-breakpoints", 0); | |
13076 | ||
13077 | add_packet_config_cmd (&remote_protocol_packets[PACKET_BreakpointCommands], | |
13078 | "BreakpointCommands", | |
13079 | "breakpoint-commands", 0); | |
13080 | ||
cf7f2e2d JM |
13081 | add_packet_config_cmd (&remote_protocol_packets[PACKET_FastTracepoints], |
13082 | "FastTracepoints", "fast-tracepoints", 0); | |
13083 | ||
13084 | add_packet_config_cmd (&remote_protocol_packets[PACKET_TracepointSource], | |
13085 | "TracepointSource", "TracepointSource", 0); | |
13086 | ||
13087 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAllow], | |
13088 | "QAllow", "allow", 0); | |
13089 | ||
13090 | add_packet_config_cmd (&remote_protocol_packets[PACKET_StaticTracepoints], | |
13091 | "StaticTracepoints", "static-tracepoints", 0); | |
13092 | ||
a45ae5f8 JM |
13093 | add_packet_config_cmd (&remote_protocol_packets[PACKET_InstallInTrace], |
13094 | "InstallInTrace", "install-in-trace", 0); | |
13095 | ||
cf7f2e2d JM |
13096 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_statictrace_read], |
13097 | "qXfer:statictrace:read", "read-sdata-object", 0); | |
5796c8dc | 13098 | |
a45ae5f8 JM |
13099 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_fdpic], |
13100 | "qXfer:fdpic:read", "read-fdpic-loadmap", 0); | |
13101 | ||
13102 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QDisableRandomization], | |
13103 | "QDisableRandomization", "disable-randomization", 0); | |
13104 | ||
ef5ccd6c JM |
13105 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAgent], |
13106 | "QAgent", "agent", 0); | |
13107 | ||
13108 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QTBuffer_size], | |
13109 | "QTBuffer:size", "trace-buffer-size", 0); | |
13110 | ||
13111 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_off], | |
13112 | "Qbtrace:off", "disable-btrace", 0); | |
13113 | ||
13114 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_bts], | |
25e4902b AHJ |
13115 | "Qbtrace:bts", "enable-btrace-bts", 0); |
13116 | ||
13117 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_pt], | |
13118 | "Qbtrace:pt", "enable-btrace-pt", 0); | |
ef5ccd6c JM |
13119 | |
13120 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace], | |
13121 | "qXfer:btrace", "read-btrace", 0); | |
13122 | ||
25e4902b AHJ |
13123 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace_conf], |
13124 | "qXfer:btrace-conf", "read-btrace-conf", 0); | |
13125 | ||
13126 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_bts_size], | |
13127 | "Qbtrace-conf:bts:size", "btrace-conf-bts-size", 0); | |
13128 | ||
13129 | add_packet_config_cmd (&remote_protocol_packets[PACKET_swbreak_feature], | |
13130 | "swbreak-feature", "swbreak-feature", 0); | |
13131 | ||
13132 | add_packet_config_cmd (&remote_protocol_packets[PACKET_hwbreak_feature], | |
13133 | "hwbreak-feature", "hwbreak-feature", 0); | |
13134 | ||
13135 | add_packet_config_cmd (&remote_protocol_packets[PACKET_fork_event_feature], | |
13136 | "fork-event-feature", "fork-event-feature", 0); | |
13137 | ||
13138 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vfork_event_feature], | |
13139 | "vfork-event-feature", "vfork-event-feature", 0); | |
13140 | ||
13141 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_pt_size], | |
13142 | "Qbtrace-conf:pt:size", "btrace-conf-pt-size", 0); | |
13143 | ||
13144 | /* Assert that we've registered "set remote foo-packet" commands | |
13145 | for all packet configs. */ | |
13146 | { | |
13147 | int i; | |
13148 | ||
13149 | for (i = 0; i < PACKET_MAX; i++) | |
13150 | { | |
13151 | /* Ideally all configs would have a command associated. Some | |
13152 | still don't though. */ | |
13153 | int excepted; | |
13154 | ||
13155 | switch (i) | |
13156 | { | |
13157 | case PACKET_QNonStop: | |
13158 | case PACKET_multiprocess_feature: | |
13159 | case PACKET_EnableDisableTracepoints_feature: | |
13160 | case PACKET_tracenz_feature: | |
13161 | case PACKET_DisconnectedTracing_feature: | |
13162 | case PACKET_augmented_libraries_svr4_read_feature: | |
13163 | case PACKET_qCRC: | |
13164 | /* Additions to this list need to be well justified: | |
13165 | pre-existing packets are OK; new packets are not. */ | |
13166 | excepted = 1; | |
13167 | break; | |
13168 | default: | |
13169 | excepted = 0; | |
13170 | break; | |
13171 | } | |
13172 | ||
13173 | /* This catches both forgetting to add a config command, and | |
13174 | forgetting to remove a packet from the exception list. */ | |
13175 | gdb_assert (excepted == (remote_protocol_packets[i].name == NULL)); | |
13176 | } | |
13177 | } | |
13178 | ||
5796c8dc SS |
13179 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
13180 | Z sub-packet has its own set and show commands, but users may | |
13181 | have sets to this variable in their .gdbinit files (or in their | |
13182 | documentation). */ | |
13183 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, | |
13184 | &remote_Z_packet_detect, _("\ | |
13185 | Set use of remote protocol `Z' packets"), _("\ | |
13186 | Show use of remote protocol `Z' packets "), _("\ | |
13187 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ | |
13188 | packets."), | |
13189 | set_remote_protocol_Z_packet_cmd, | |
c50c785c JM |
13190 | show_remote_protocol_Z_packet_cmd, |
13191 | /* FIXME: i18n: Use of remote protocol | |
13192 | `Z' packets is %s. */ | |
5796c8dc SS |
13193 | &remote_set_cmdlist, &remote_show_cmdlist); |
13194 | ||
13195 | add_prefix_cmd ("remote", class_files, remote_command, _("\ | |
13196 | Manipulate files on the remote system\n\ | |
13197 | Transfer files to and from the remote target system."), | |
13198 | &remote_cmdlist, "remote ", | |
13199 | 0 /* allow-unknown */, &cmdlist); | |
13200 | ||
13201 | add_cmd ("put", class_files, remote_put_command, | |
13202 | _("Copy a local file to the remote system."), | |
13203 | &remote_cmdlist); | |
13204 | ||
13205 | add_cmd ("get", class_files, remote_get_command, | |
13206 | _("Copy a remote file to the local system."), | |
13207 | &remote_cmdlist); | |
13208 | ||
13209 | add_cmd ("delete", class_files, remote_delete_command, | |
13210 | _("Delete a remote file."), | |
13211 | &remote_cmdlist); | |
13212 | ||
13213 | remote_exec_file = xstrdup (""); | |
13214 | add_setshow_string_noescape_cmd ("exec-file", class_files, | |
13215 | &remote_exec_file, _("\ | |
13216 | Set the remote pathname for \"run\""), _("\ | |
13217 | Show the remote pathname for \"run\""), NULL, NULL, NULL, | |
13218 | &remote_set_cmdlist, &remote_show_cmdlist); | |
13219 | ||
25e4902b AHJ |
13220 | add_setshow_boolean_cmd ("range-stepping", class_run, |
13221 | &use_range_stepping, _("\ | |
13222 | Enable or disable range stepping."), _("\ | |
13223 | Show whether target-assisted range stepping is enabled."), _("\ | |
13224 | If on, and the target supports it, when stepping a source line, GDB\n\ | |
13225 | tells the target to step the corresponding range of addresses itself instead\n\ | |
13226 | of issuing multiple single-steps. This speeds up source level\n\ | |
13227 | stepping. If off, GDB always issues single-steps, even if range\n\ | |
13228 | stepping is supported by the target. The default is on."), | |
13229 | set_range_stepping, | |
13230 | show_range_stepping, | |
13231 | &setlist, | |
13232 | &showlist); | |
13233 | ||
5796c8dc SS |
13234 | /* Eventually initialize fileio. See fileio.c */ |
13235 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
13236 | ||
25e4902b | 13237 | /* Take advantage of the fact that the TID field is not used, to tag |
5796c8dc | 13238 | special ptids with it set to != 0. */ |
25e4902b AHJ |
13239 | magic_null_ptid = ptid_build (42000, -1, 1); |
13240 | not_sent_ptid = ptid_build (42000, -2, 1); | |
13241 | any_thread_ptid = ptid_build (42000, 0, 1); | |
cf7f2e2d JM |
13242 | |
13243 | target_buf_size = 2048; | |
13244 | target_buf = xmalloc (target_buf_size); | |
5796c8dc | 13245 | } |
cf7f2e2d | 13246 |