Import gdb 7.3 into vendor branch
[dragonfly.git] / contrib / gdb-7 / gdb / top.c
CommitLineData
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1/* Top level stuff for GDB, the GNU debugger.
2
3 Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
4 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
c50c785c 5 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
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6
7 This file is part of GDB.
8
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
13
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
21
22#include "defs.h"
23#include "gdbcmd.h"
24#include "call-cmds.h"
25#include "cli/cli-cmds.h"
26#include "cli/cli-script.h"
27#include "cli/cli-setshow.h"
28#include "cli/cli-decode.h"
29#include "symtab.h"
30#include "inferior.h"
31#include "exceptions.h"
32#include <signal.h>
33#include "target.h"
34#include "breakpoint.h"
35#include "gdbtypes.h"
36#include "expression.h"
37#include "value.h"
38#include "language.h"
39#include "terminal.h" /* For job_control. */
40#include "annotate.h"
41#include "completer.h"
42#include "top.h"
43#include "version.h"
44#include "serial.h"
45#include "doublest.h"
46#include "gdb_assert.h"
47#include "main.h"
48#include "event-loop.h"
49#include "gdbthread.h"
c50c785c 50#include "python/python.h"
5796c8dc 51
c50c785c 52/* readline include files. */
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53#include "readline/readline.h"
54#include "readline/history.h"
55
56/* readline defines this. */
57#undef savestring
58
59#include <sys/types.h>
60
61#include "event-top.h"
62#include "gdb_string.h"
63#include "gdb_stat.h"
64#include <ctype.h>
65#include "ui-out.h"
66#include "cli-out.h"
67
c50c785c 68/* Default command line prompt. This is overriden in some configs. */
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69
70#ifndef DEFAULT_PROMPT
71#define DEFAULT_PROMPT "(gdb) "
72#endif
73
74/* Initialization file name for gdb. This is overridden in some configs. */
75
76#ifndef PATH_MAX
77# ifdef FILENAME_MAX
78# define PATH_MAX FILENAME_MAX
79# else
80# define PATH_MAX 512
81# endif
82#endif
83
84#ifndef GDBINIT_FILENAME
85#define GDBINIT_FILENAME ".gdbinit"
86#endif
87char gdbinit[PATH_MAX + 1] = GDBINIT_FILENAME;
88
89int inhibit_gdbinit = 0;
90
91/* If nonzero, and GDB has been configured to be able to use windows,
92 attempt to open them upon startup. */
93
94int use_windows = 0;
95
96extern char lang_frame_mismatch_warn[]; /* language.c */
97
98/* Flag for whether we want all the "from_tty" gubbish printed. */
99
c50c785c 100int caution = 1; /* Default is yes, sigh. */
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101static void
102show_caution (struct ui_file *file, int from_tty,
103 struct cmd_list_element *c, const char *value)
104{
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105 fprintf_filtered (file, _("Whether to confirm potentially "
106 "dangerous operations is %s.\n"),
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107 value);
108}
109
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110/* stdio stream that command input is being read from. Set to stdin
111 normally. Set by source_command to the file we are sourcing. Set
112 to NULL if we are executing a user-defined command or interacting
113 via a GUI. */
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114
115FILE *instream;
116
117/* Flag to indicate whether a user defined command is currently running. */
118
119int in_user_command;
120
121/* Current working directory. */
122
123char *current_directory;
124
125/* The directory name is actually stored here (usually). */
126char gdb_dirbuf[1024];
127
128/* Function to call before reading a command, if nonzero.
129 The function receives two args: an input stream,
130 and a prompt string. */
131
132void (*window_hook) (FILE *, char *);
133
134int epoch_interface;
135int xgdb_verbose;
136
137/* Buffer used for reading command lines, and the size
138 allocated for it so far. */
139
140char *line;
141int linesize = 100;
142
143/* Nonzero if the current command is modified by "server ". This
144 affects things like recording into the command history, commands
145 repeating on RETURN, etc. This is so a user interface (emacs, GUI,
146 whatever) can issue its own commands and also send along commands
147 from the user, and have the user not notice that the user interface
148 is issuing commands too. */
149int server_command;
150
151/* Baud rate specified for talking to serial target systems. Default
152 is left as -1, so targets can choose their own defaults. */
c50c785c
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153/* FIXME: This means that "show remotebaud" and gr_files_info can
154 print -1 or (unsigned int)-1. This is a Bad User Interface. */
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155
156int baud_rate = -1;
157
c50c785c 158/* Timeout limit for response from target. */
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159
160/* The default value has been changed many times over the years. It
161 was originally 5 seconds. But that was thought to be a long time
162 to sit and wait, so it was changed to 2 seconds. That was thought
163 to be plenty unless the connection was going through some terminal
164 server or multiplexer or other form of hairy serial connection.
165
166 In mid-1996, remote_timeout was moved from remote.c to top.c and
167 it began being used in other remote-* targets. It appears that the
168 default was changed to 20 seconds at that time, perhaps because the
169 Renesas E7000 ICE didn't always respond in a timely manner.
170
171 But if 5 seconds is a long time to sit and wait for retransmissions,
172 20 seconds is far worse. This demonstrates the difficulty of using
173 a single variable for all protocol timeouts.
174
175 As remote.c is used much more than remote-e7000.c, it was changed
c50c785c 176 back to 2 seconds in 1999. */
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177
178int remote_timeout = 2;
179
180/* Non-zero tells remote* modules to output debugging info. */
181
182int remote_debug = 0;
183
184/* Sbrk location on entry to main. Used for statistics only. */
185#ifdef HAVE_SBRK
186char *lim_at_start;
187#endif
188
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189/* Hooks for alternate command interfaces. */
190
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191/* Called after most modules have been initialized, but before taking
192 users command file.
5796c8dc 193
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194 If the UI fails to initialize and it wants GDB to continue using
195 the default UI, then it should clear this hook before returning. */
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196
197void (*deprecated_init_ui_hook) (char *argv0);
198
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199/* This hook is called from within gdb's many mini-event loops which
200 could steal control from a real user interface's event loop. It
201 returns non-zero if the user is requesting a detach, zero
202 otherwise. */
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203
204int (*deprecated_ui_loop_hook) (int);
205
206/* Called instead of command_loop at top level. Can be invoked via
207 throw_exception(). */
208
209void (*deprecated_command_loop_hook) (void);
210
211
212/* Called from print_frame_info to list the line we stopped in. */
213
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214void (*deprecated_print_frame_info_listing_hook) (struct symtab * s,
215 int line,
216 int stopline,
217 int noerror);
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218/* Replaces most of query. */
219
220int (*deprecated_query_hook) (const char *, va_list);
221
222/* Replaces most of warning. */
223
224void (*deprecated_warning_hook) (const char *, va_list);
225
226/* These three functions support getting lines of text from the user.
227 They are used in sequence. First deprecated_readline_begin_hook is
228 called with a text string that might be (for example) a message for
229 the user to type in a sequence of commands to be executed at a
230 breakpoint. If this function calls back to a GUI, it might take
231 this opportunity to pop up a text interaction window with this
232 message. Next, deprecated_readline_hook is called with a prompt
233 that is emitted prior to collecting the user input. It can be
234 called multiple times. Finally, deprecated_readline_end_hook is
235 called to notify the GUI that we are done with the interaction
236 window and it can close it. */
237
238void (*deprecated_readline_begin_hook) (char *, ...);
239char *(*deprecated_readline_hook) (char *);
240void (*deprecated_readline_end_hook) (void);
241
242/* Called as appropriate to notify the interface that we have attached
c50c785c 243 to or detached from an already running process. */
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244
245void (*deprecated_attach_hook) (void);
246void (*deprecated_detach_hook) (void);
247
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248/* Called during long calculations to allow GUI to repair window
249 damage, and to check for stop buttons, etc... */
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250
251void (*deprecated_interactive_hook) (void);
252
c50c785c 253/* Tell the GUI someone changed the register REGNO. -1 means
5796c8dc 254 that the caller does not know which register changed or
c50c785c 255 that several registers have changed (see value_assign). */
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256void (*deprecated_register_changed_hook) (int regno);
257
c50c785c
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258/* Called when going to wait for the target. Usually allows the GUI
259 to run while waiting for target events. */
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260
261ptid_t (*deprecated_target_wait_hook) (ptid_t ptid,
262 struct target_waitstatus *status,
263 int options);
264
c50c785c
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265/* Used by UI as a wrapper around command execution. May do various
266 things like enabling/disabling buttons, etc... */
5796c8dc 267
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268void (*deprecated_call_command_hook) (struct cmd_list_element * c,
269 char *cmd, int from_tty);
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270
271/* Called after a `set' command has finished. Is only run if the
272 `set' command succeeded. */
273
274void (*deprecated_set_hook) (struct cmd_list_element * c);
275
276/* Called when the current thread changes. Argument is thread id. */
277
278void (*deprecated_context_hook) (int id);
279
280/* Handler for SIGHUP. */
281
282#ifdef SIGHUP
283/* NOTE 1999-04-29: This function will be static again, once we modify
284 gdb to use the event loop as the default command loop and we merge
c50c785c 285 event-top.c into this file, top.c. */
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286/* static */ int
287quit_cover (void *s)
288{
289 caution = 0; /* Throw caution to the wind -- we're exiting.
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290 This prevents asking the user dumb
291 questions. */
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292 quit_command ((char *) 0, 0);
293 return 0;
294}
295#endif /* defined SIGHUP */
296\f
297/* Line number we are currently in in a file which is being sourced. */
298/* NOTE 1999-04-29: This variable will be static again, once we modify
299 gdb to use the event loop as the default command loop and we merge
c50c785c 300 event-top.c into this file, top.c. */
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301/* static */ int source_line_number;
302
303/* Name of the file we are sourcing. */
304/* NOTE 1999-04-29: This variable will be static again, once we modify
305 gdb to use the event loop as the default command loop and we merge
c50c785c 306 event-top.c into this file, top.c. */
cf7f2e2d 307/* static */ const char *source_file_name;
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308
309/* Clean up on error during a "source" command (or execution of a
310 user-defined command). */
311
312void
313do_restore_instream_cleanup (void *stream)
314{
315 /* Restore the previous input stream. */
316 instream = stream;
317}
318
319/* Read commands from STREAM. */
320void
321read_command_file (FILE *stream)
322{
323 struct cleanup *cleanups;
324
325 cleanups = make_cleanup (do_restore_instream_cleanup, instream);
326 instream = stream;
327 command_loop ();
328 do_cleanups (cleanups);
329}
330\f
331void (*pre_init_ui_hook) (void);
332
333#ifdef __MSDOS__
334void
335do_chdir_cleanup (void *old_dir)
336{
337 chdir (old_dir);
338 xfree (old_dir);
339}
340#endif
341
342void
343prepare_execute_command (void)
344{
345 free_all_values ();
346
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347 /* With multiple threads running while the one we're examining is
348 stopped, the dcache can get stale without us being able to detect
349 it. For the duration of the command, though, use the dcache to
350 help things like backtrace. */
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351 if (non_stop)
352 target_dcache_invalidate ();
353}
354
355/* Execute the line P as a command, in the current user context.
356 Pass FROM_TTY as second argument to the defining function. */
357
358void
359execute_command (char *p, int from_tty)
360{
361 struct cmd_list_element *c;
362 enum language flang;
363 static int warned = 0;
364 char *line;
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365
366 prepare_execute_command ();
367
368 /* Force cleanup of any alloca areas if using C alloca instead of
369 a builtin alloca. */
370 alloca (0);
371
372 /* This can happen when command_line_input hits end of file. */
373 if (p == NULL)
374 return;
375
376 target_log_command (p);
377
378 while (*p == ' ' || *p == '\t')
379 p++;
380 if (*p)
381 {
382 char *arg;
383 line = p;
384
385 /* If trace-commands is set then this will print this command. */
386 print_command_trace (p);
387
388 c = lookup_cmd (&p, cmdlist, "", 0, 1);
389
390 /* Pass null arg rather than an empty one. */
391 arg = *p ? p : 0;
392
393 /* FIXME: cagney/2002-02-02: The c->type test is pretty dodgy
394 while the is_complete_command(cfunc) test is just plain
395 bogus. They should both be replaced by a test of the form
396 c->strip_trailing_white_space_p. */
397 /* NOTE: cagney/2002-02-02: The function.cfunc in the below
398 can't be replaced with func. This is because it is the
399 cfunc, and not the func, that has the value that the
400 is_complete_command hack is testing for. */
401 /* Clear off trailing whitespace, except for set and complete
402 command. */
403 if (arg
404 && c->type != set_cmd
405 && !is_complete_command (c))
406 {
407 p = arg + strlen (arg) - 1;
408 while (p >= arg && (*p == ' ' || *p == '\t'))
409 p--;
410 *(p + 1) = '\0';
411 }
412
c50c785c 413 /* If this command has been pre-hooked, run the hook first. */
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414 execute_cmd_pre_hook (c);
415
416 if (c->flags & DEPRECATED_WARN_USER)
417 deprecated_cmd_warning (&line);
418
419 if (c->class == class_user)
420 execute_user_command (c, arg);
421 else if (c->type == set_cmd || c->type == show_cmd)
422 do_setshow_command (arg, from_tty & caution, c);
423 else if (!cmd_func_p (c))
424 error (_("That is not a command, just a help topic."));
425 else if (deprecated_call_command_hook)
426 deprecated_call_command_hook (c, arg, from_tty & caution);
427 else
428 cmd_func (c, arg, from_tty & caution);
429
c50c785c 430 /* If this command has been post-hooked, run the hook last. */
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431 execute_cmd_post_hook (c);
432
433 }
434
cf7f2e2d
JM
435 /* Tell the user if the language has changed (except first time).
436 First make sure that a new frame has been selected, in case this
437 command or the hooks changed the program state. */
438 deprecated_safe_get_selected_frame ();
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439 if (current_language != expected_language)
440 {
cf7f2e2d 441 if (language_mode == language_mode_auto && info_verbose)
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442 {
443 language_info (1); /* Print what changed. */
444 }
445 warned = 0;
446 }
447
448 /* Warn the user if the working language does not match the
449 language of the current frame. Only warn the user if we are
c50c785c 450 actually running the program, i.e. there is a stack. */
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451 /* FIXME: This should be cacheing the frame and only running when
452 the frame changes. */
453
454 if (has_stack_frames ())
455 {
456 flang = get_frame_language ();
457 if (!warned
458 && flang != language_unknown
459 && flang != current_language->la_language)
460 {
461 printf_filtered ("%s\n", lang_frame_mismatch_warn);
462 warned = 1;
463 }
464 }
465}
466
cf7f2e2d
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467/* Run execute_command for P and FROM_TTY. Capture its output into the
468 returned string, do not display it to the screen. BATCH_FLAG will be
469 temporarily set to true. */
470
471char *
472execute_command_to_string (char *p, int from_tty)
473{
474 struct ui_file *str_file;
475 struct cleanup *cleanup;
476 char *retval;
477
478 /* GDB_STDOUT should be better already restored during these
479 restoration callbacks. */
480 cleanup = set_batch_flag_and_make_cleanup_restore_page_info ();
481
482 str_file = mem_fileopen ();
483
c50c785c 484 make_cleanup_ui_file_delete (str_file);
cf7f2e2d
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485 make_cleanup_restore_ui_file (&gdb_stdout);
486 make_cleanup_restore_ui_file (&gdb_stderr);
c50c785c
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487 make_cleanup_restore_ui_file (&gdb_stdlog);
488 make_cleanup_restore_ui_file (&gdb_stdtarg);
489 make_cleanup_restore_ui_file (&gdb_stdtargerr);
490
491 if (ui_out_redirect (uiout, str_file) < 0)
492 warning (_("Current output protocol does not support redirection"));
493 else
494 make_cleanup_ui_out_redirect_pop (uiout);
cf7f2e2d
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495
496 gdb_stdout = str_file;
497 gdb_stderr = str_file;
c50c785c
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498 gdb_stdlog = str_file;
499 gdb_stdtarg = str_file;
500 gdb_stdtargerr = str_file;
cf7f2e2d
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501
502 execute_command (p, from_tty);
503
504 retval = ui_file_xstrdup (str_file, NULL);
505
506 do_cleanups (cleanup);
507
508 return retval;
509}
510
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511/* Read commands from `instream' and execute them
512 until end of file or error reading instream. */
513
514void
515command_loop (void)
516{
517 struct cleanup *old_chain;
518 char *command;
519 int stdin_is_tty = ISATTY (stdin);
5796c8dc
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520
521 while (instream && !feof (instream))
522 {
523 if (window_hook && instream == stdin)
524 (*window_hook) (instream, get_prompt ());
525
526 quit_flag = 0;
527 if (instream == stdin && stdin_is_tty)
528 reinitialize_more_filter ();
529 old_chain = make_cleanup (null_cleanup, 0);
530
c50c785c 531 /* Get a command-line. This calls the readline package. */
5796c8dc
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532 command = command_line_input (instream == stdin ?
533 get_prompt () : (char *) NULL,
534 instream == stdin, "prompt");
535 if (command == 0)
536 return;
537
cf7f2e2d 538 make_command_stats_cleanup (1);
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539
540 execute_command (command, instream == stdin);
541
542 /* Do any commands attached to breakpoint we are stopped at. */
543 bpstat_do_actions ();
544
545 do_cleanups (old_chain);
5796c8dc
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546 }
547}
548\f
c50c785c
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549/* When nonzero, cause dont_repeat to do nothing. This should only be
550 set via prevent_dont_repeat. */
551
552static int suppress_dont_repeat = 0;
553
5796c8dc
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554/* Commands call this if they do not want to be repeated by null lines. */
555
556void
557dont_repeat (void)
558{
c50c785c 559 if (suppress_dont_repeat || server_command)
5796c8dc
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560 return;
561
562 /* If we aren't reading from standard input, we are saving the last
c50c785c
JM
563 thing read from stdin in line and don't want to delete it. Null
564 lines won't repeat here in any case. */
5796c8dc
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565 if (instream == stdin)
566 *line = 0;
567}
c50c785c
JM
568
569/* Prevent dont_repeat from working, and return a cleanup that
570 restores the previous state. */
571
572struct cleanup *
573prevent_dont_repeat (void)
574{
575 struct cleanup *result = make_cleanup_restore_integer (&suppress_dont_repeat);
576
577 suppress_dont_repeat = 1;
578 return result;
579}
580
5796c8dc
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581\f
582/* Read a line from the stream "instream" without command line editing.
583
584 It prints PROMPT_ARG once at the start.
585 Action is compatible with "readline", e.g. space for the result is
586 malloc'd and should be freed by the caller.
587
588 A NULL return means end of file. */
589char *
590gdb_readline (char *prompt_arg)
591{
592 int c;
593 char *result;
594 int input_index = 0;
595 int result_size = 80;
596
597 if (prompt_arg)
598 {
599 /* Don't use a _filtered function here. It causes the assumed
600 character position to be off, since the newline we read from
601 the user is not accounted for. */
602 fputs_unfiltered (prompt_arg, gdb_stdout);
603 gdb_flush (gdb_stdout);
604 }
605
606 result = (char *) xmalloc (result_size);
607
608 while (1)
609 {
610 /* Read from stdin if we are executing a user defined command.
611 This is the right thing for prompt_for_continue, at least. */
612 c = fgetc (instream ? instream : stdin);
613
614 if (c == EOF)
615 {
616 if (input_index > 0)
617 /* The last line does not end with a newline. Return it, and
618 if we are called again fgetc will still return EOF and
619 we'll return NULL then. */
620 break;
621 xfree (result);
622 return NULL;
623 }
624
625 if (c == '\n')
626 {
627 if (input_index > 0 && result[input_index - 1] == '\r')
628 input_index--;
629 break;
630 }
631
632 result[input_index++] = c;
633 while (input_index >= result_size)
634 {
635 result_size *= 2;
636 result = (char *) xrealloc (result, result_size);
637 }
638 }
639
640 result[input_index++] = '\0';
641 return result;
642}
643
644/* Variables which control command line editing and history
645 substitution. These variables are given default values at the end
646 of this file. */
647static int command_editing_p;
648
649/* NOTE 1999-04-29: This variable will be static again, once we modify
650 gdb to use the event loop as the default command loop and we merge
c50c785c 651 event-top.c into this file, top.c. */
5796c8dc
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652
653/* static */ int history_expansion_p;
654
655static int write_history_p;
656static void
657show_write_history_p (struct ui_file *file, int from_tty,
658 struct cmd_list_element *c, const char *value)
659{
660 fprintf_filtered (file, _("Saving of the history record on exit is %s.\n"),
661 value);
662}
663
664static int history_size;
665static void
666show_history_size (struct ui_file *file, int from_tty,
667 struct cmd_list_element *c, const char *value)
668{
669 fprintf_filtered (file, _("The size of the command history is %s.\n"),
670 value);
671}
672
673static char *history_filename;
674static void
675show_history_filename (struct ui_file *file, int from_tty,
676 struct cmd_list_element *c, const char *value)
677{
c50c785c
JM
678 fprintf_filtered (file, _("The filename in which to record "
679 "the command history is \"%s\".\n"),
5796c8dc
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680 value);
681}
682
683/* This is like readline(), but it has some gdb-specific behavior.
684 gdb may want readline in both the synchronous and async modes during
685 a single gdb invocation. At the ordinary top-level prompt we might
686 be using the async readline. That means we can't use
687 rl_pre_input_hook, since it doesn't work properly in async mode.
688 However, for a secondary prompt (" >", such as occurs during a
689 `define'), gdb wants a synchronous response.
690
691 We used to call readline() directly, running it in synchronous
692 mode. But mixing modes this way is not supported, and as of
693 readline 5.x it no longer works; the arrow keys come unbound during
694 the synchronous call. So we make a nested call into the event
695 loop. That's what gdb_readline_wrapper is for. */
696
697/* A flag set as soon as gdb_readline_wrapper_line is called; we can't
698 rely on gdb_readline_wrapper_result, which might still be NULL if
699 the user types Control-D for EOF. */
700static int gdb_readline_wrapper_done;
701
702/* The result of the current call to gdb_readline_wrapper, once a newline
703 is seen. */
704static char *gdb_readline_wrapper_result;
705
706/* Any intercepted hook. Operate-and-get-next sets this, expecting it
707 to be called after the newline is processed (which will redisplay
708 the prompt). But in gdb_readline_wrapper we will not get a new
709 prompt until the next call, or until we return to the event loop.
710 So we disable this hook around the newline and restore it before we
711 return. */
712static void (*saved_after_char_processing_hook) (void);
713
714/* This function is called when readline has seen a complete line of
715 text. */
716
717static void
718gdb_readline_wrapper_line (char *line)
719{
720 gdb_assert (!gdb_readline_wrapper_done);
721 gdb_readline_wrapper_result = line;
722 gdb_readline_wrapper_done = 1;
723
724 /* Prevent operate-and-get-next from acting too early. */
725 saved_after_char_processing_hook = after_char_processing_hook;
726 after_char_processing_hook = NULL;
727
728 /* Prevent parts of the prompt from being redisplayed if annotations
729 are enabled, and readline's state getting out of sync. */
730 if (async_command_editing_p)
731 rl_callback_handler_remove ();
732}
733
734struct gdb_readline_wrapper_cleanup
735 {
736 void (*handler_orig) (char *);
737 int already_prompted_orig;
738 };
739
740static void
741gdb_readline_wrapper_cleanup (void *arg)
742{
743 struct gdb_readline_wrapper_cleanup *cleanup = arg;
744
745 rl_already_prompted = cleanup->already_prompted_orig;
746
747 gdb_assert (input_handler == gdb_readline_wrapper_line);
748 input_handler = cleanup->handler_orig;
749 gdb_readline_wrapper_result = NULL;
750 gdb_readline_wrapper_done = 0;
751
752 after_char_processing_hook = saved_after_char_processing_hook;
753 saved_after_char_processing_hook = NULL;
754
755 xfree (cleanup);
756}
757
758char *
759gdb_readline_wrapper (char *prompt)
760{
761 struct cleanup *back_to;
762 struct gdb_readline_wrapper_cleanup *cleanup;
763 char *retval;
764
765 cleanup = xmalloc (sizeof (*cleanup));
766 cleanup->handler_orig = input_handler;
767 input_handler = gdb_readline_wrapper_line;
768
769 cleanup->already_prompted_orig = rl_already_prompted;
770
771 back_to = make_cleanup (gdb_readline_wrapper_cleanup, cleanup);
772
773 /* Display our prompt and prevent double prompt display. */
774 display_gdb_prompt (prompt);
775 rl_already_prompted = 1;
776
777 if (after_char_processing_hook)
778 (*after_char_processing_hook) ();
779 gdb_assert (after_char_processing_hook == NULL);
780
781 /* gdb_do_one_event argument is unused. */
782 while (gdb_do_one_event (NULL) >= 0)
783 if (gdb_readline_wrapper_done)
784 break;
785
786 retval = gdb_readline_wrapper_result;
787 do_cleanups (back_to);
788 return retval;
789}
790
791\f
5796c8dc
SS
792/* The current saved history number from operate-and-get-next.
793 This is -1 if not valid. */
794static int operate_saved_history = -1;
795
796/* This is put on the appropriate hook and helps operate-and-get-next
797 do its work. */
798static void
799gdb_rl_operate_and_get_next_completion (void)
800{
801 int delta = where_history () - operate_saved_history;
cf7f2e2d 802
5796c8dc
SS
803 /* The `key' argument to rl_get_previous_history is ignored. */
804 rl_get_previous_history (delta, 0);
805 operate_saved_history = -1;
806
807 /* readline doesn't automatically update the display for us. */
808 rl_redisplay ();
809
810 after_char_processing_hook = NULL;
811 rl_pre_input_hook = NULL;
812}
813
814/* This is a gdb-local readline command handler. It accepts the
815 current command line (like RET does) and, if this command was taken
816 from the history, arranges for the next command in the history to
817 appear on the command line when the prompt returns.
818 We ignore the arguments. */
819static int
820gdb_rl_operate_and_get_next (int count, int key)
821{
822 int where;
823
824 /* Use the async hook. */
825 after_char_processing_hook = gdb_rl_operate_and_get_next_completion;
826
827 /* Find the current line, and find the next line to use. */
828 where = where_history();
829
830 /* FIXME: kettenis/20020817: max_input_history is renamed into
831 history_max_entries in readline-4.2. When we do a new readline
832 import, we should probably change it here too, even though
833 readline maintains backwards compatibility for now by still
834 defining max_input_history. */
835 if ((history_is_stifled () && (history_length >= max_input_history)) ||
836 (where >= history_length - 1))
837 operate_saved_history = where;
838 else
839 operate_saved_history = where + 1;
840
841 return rl_newline (1, key);
842}
843\f
844/* Read one line from the command input stream `instream'
845 into the local static buffer `linebuffer' (whose current length
846 is `linelength').
847 The buffer is made bigger as necessary.
848 Returns the address of the start of the line.
849
850 NULL is returned for end of file.
851
852 *If* the instream == stdin & stdin is a terminal, the line read
853 is copied into the file line saver (global var char *line,
854 length linesize) so that it can be duplicated.
855
856 This routine either uses fancy command line editing or
857 simple input as the user has requested. */
858
859char *
860command_line_input (char *prompt_arg, int repeat, char *annotation_suffix)
861{
862 static char *linebuffer = 0;
863 static unsigned linelength = 0;
864 char *p;
865 char *p1;
866 char *rl;
867 char *local_prompt = prompt_arg;
868 char *nline;
869 char got_eof = 0;
870
871 /* The annotation suffix must be non-NULL. */
872 if (annotation_suffix == NULL)
873 annotation_suffix = "";
874
875 if (annotation_level > 1 && instream == stdin)
876 {
877 local_prompt = alloca ((prompt_arg == NULL ? 0 : strlen (prompt_arg))
878 + strlen (annotation_suffix) + 40);
879 if (prompt_arg == NULL)
880 local_prompt[0] = '\0';
881 else
882 strcpy (local_prompt, prompt_arg);
883 strcat (local_prompt, "\n\032\032");
884 strcat (local_prompt, annotation_suffix);
885 strcat (local_prompt, "\n");
886 }
887
888 if (linebuffer == 0)
889 {
890 linelength = 80;
891 linebuffer = (char *) xmalloc (linelength);
892 }
893
894 p = linebuffer;
895
896 /* Control-C quits instantly if typed while in this loop
897 since it should not wait until the user types a newline. */
898 immediate_quit++;
899#ifdef STOP_SIGNAL
900 if (job_control)
901 signal (STOP_SIGNAL, handle_stop_sig);
902#endif
903
904 while (1)
905 {
c50c785c
JM
906 /* Make sure that all output has been output. Some machines may
907 let you get away with leaving out some of the gdb_flush, but
908 not all. */
5796c8dc
SS
909 wrap_here ("");
910 gdb_flush (gdb_stdout);
911 gdb_flush (gdb_stderr);
912
913 if (source_file_name != NULL)
914 ++source_line_number;
915
916 if (annotation_level > 1 && instream == stdin)
917 {
918 puts_unfiltered ("\n\032\032pre-");
919 puts_unfiltered (annotation_suffix);
920 puts_unfiltered ("\n");
921 }
922
923 /* Don't use fancy stuff if not talking to stdin. */
924 if (deprecated_readline_hook && input_from_terminal_p ())
925 {
926 rl = (*deprecated_readline_hook) (local_prompt);
927 }
928 else if (command_editing_p && input_from_terminal_p ())
929 {
930 rl = gdb_readline_wrapper (local_prompt);
931 }
932 else
933 {
934 rl = gdb_readline (local_prompt);
935 }
936
937 if (annotation_level > 1 && instream == stdin)
938 {
939 puts_unfiltered ("\n\032\032post-");
940 puts_unfiltered (annotation_suffix);
941 puts_unfiltered ("\n");
942 }
943
944 if (!rl || rl == (char *) EOF)
945 {
946 got_eof = 1;
947 break;
948 }
949 if (strlen (rl) + 1 + (p - linebuffer) > linelength)
950 {
951 linelength = strlen (rl) + 1 + (p - linebuffer);
952 nline = (char *) xrealloc (linebuffer, linelength);
953 p += nline - linebuffer;
954 linebuffer = nline;
955 }
956 p1 = rl;
957 /* Copy line. Don't copy null at end. (Leaves line alone
c50c785c 958 if this was just a newline). */
5796c8dc
SS
959 while (*p1)
960 *p++ = *p1++;
961
962 xfree (rl); /* Allocated in readline. */
963
964 if (p == linebuffer || *(p - 1) != '\\')
965 break;
966
967 p--; /* Put on top of '\'. */
968 local_prompt = (char *) 0;
969 }
970
971#ifdef STOP_SIGNAL
972 if (job_control)
973 signal (STOP_SIGNAL, SIG_DFL);
974#endif
975 immediate_quit--;
976
977 if (got_eof)
978 return NULL;
979
980#define SERVER_COMMAND_LENGTH 7
981 server_command =
982 (p - linebuffer > SERVER_COMMAND_LENGTH)
983 && strncmp (linebuffer, "server ", SERVER_COMMAND_LENGTH) == 0;
984 if (server_command)
985 {
986 /* Note that we don't set `line'. Between this and the check in
987 dont_repeat, this insures that repeating will still do the
988 right thing. */
989 *p = '\0';
990 return linebuffer + SERVER_COMMAND_LENGTH;
991 }
992
993 /* Do history expansion if that is wished. */
994 if (history_expansion_p && instream == stdin
995 && ISATTY (instream))
996 {
997 char *history_value;
998 int expanded;
999
1000 *p = '\0'; /* Insert null now. */
1001 expanded = history_expand (linebuffer, &history_value);
1002 if (expanded)
1003 {
1004 /* Print the changes. */
1005 printf_unfiltered ("%s\n", history_value);
1006
1007 /* If there was an error, call this function again. */
1008 if (expanded < 0)
1009 {
1010 xfree (history_value);
c50c785c
JM
1011 return command_line_input (prompt_arg, repeat,
1012 annotation_suffix);
5796c8dc
SS
1013 }
1014 if (strlen (history_value) > linelength)
1015 {
1016 linelength = strlen (history_value) + 1;
1017 linebuffer = (char *) xrealloc (linebuffer, linelength);
1018 }
1019 strcpy (linebuffer, history_value);
1020 p = linebuffer + strlen (linebuffer);
1021 }
1022 xfree (history_value);
1023 }
1024
c50c785c
JM
1025 /* If we just got an empty line, and that is supposed to repeat the
1026 previous command, return the value in the global buffer. */
5796c8dc
SS
1027 if (repeat && p == linebuffer)
1028 return line;
1029 for (p1 = linebuffer; *p1 == ' ' || *p1 == '\t'; p1++);
1030 if (repeat && !*p1)
1031 return line;
1032
1033 *p = 0;
1034
1035 /* Add line to history if appropriate. */
1036 if (instream == stdin
1037 && ISATTY (stdin) && *linebuffer)
1038 add_history (linebuffer);
1039
1040 /* Note: lines consisting solely of comments are added to the command
1041 history. This is useful when you type a command, and then
1042 realize you don't want to execute it quite yet. You can comment
1043 out the command and then later fetch it from the value history
1044 and remove the '#'. The kill ring is probably better, but some
1045 people are in the habit of commenting things out. */
1046 if (*p1 == '#')
c50c785c 1047 *p1 = '\0'; /* Found a comment. */
5796c8dc
SS
1048
1049 /* Save into global buffer if appropriate. */
1050 if (repeat)
1051 {
1052 if (linelength > linesize)
1053 {
1054 line = xrealloc (line, linelength);
1055 linesize = linelength;
1056 }
1057 strcpy (line, linebuffer);
1058 return line;
1059 }
1060
1061 return linebuffer;
1062}
1063\f
c50c785c 1064/* Print the GDB banner. */
5796c8dc
SS
1065void
1066print_gdb_version (struct ui_file *stream)
1067{
1068 /* From GNU coding standards, first line is meant to be easy for a
1069 program to parse, and is just canonical program name and version
c50c785c 1070 number, which starts after last space. */
5796c8dc
SS
1071
1072 fprintf_filtered (stream, "GNU gdb %s%s\n", PKGVERSION, version);
1073
c50c785c 1074 /* Second line is a copyright notice. */
5796c8dc 1075
c50c785c
JM
1076 fprintf_filtered (stream,
1077 "Copyright (C) 2011 Free Software Foundation, Inc.\n");
5796c8dc
SS
1078
1079 /* Following the copyright is a brief statement that the program is
1080 free software, that users are free to copy and change it on
1081 certain conditions, that it is covered by the GNU GPL, and that
c50c785c 1082 there is no warranty. */
5796c8dc
SS
1083
1084 fprintf_filtered (stream, "\
c50c785c
JM
1085License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>\
1086\nThis is free software: you are free to change and redistribute it.\n\
5796c8dc
SS
1087There is NO WARRANTY, to the extent permitted by law. Type \"show copying\"\n\
1088and \"show warranty\" for details.\n");
1089
c50c785c 1090 /* After the required info we print the configuration information. */
5796c8dc
SS
1091
1092 fprintf_filtered (stream, "This GDB was configured as \"");
1093 if (strcmp (host_name, target_name) != 0)
1094 {
c50c785c
JM
1095 fprintf_filtered (stream, "--host=%s --target=%s",
1096 host_name, target_name);
5796c8dc
SS
1097 }
1098 else
1099 {
1100 fprintf_filtered (stream, "%s", host_name);
1101 }
1102 fprintf_filtered (stream, "\".");
1103
1104 if (REPORT_BUGS_TO[0])
1105 {
1106 fprintf_filtered (stream,
1107 _("\nFor bug reporting instructions, please see:\n"));
1108 fprintf_filtered (stream, "%s.", REPORT_BUGS_TO);
1109 }
1110}
1111\f
1112/* get_prompt: access method for the GDB prompt string. */
1113
1114char *
1115get_prompt (void)
1116{
1117 return PROMPT (0);
1118}
1119
1120void
1121set_prompt (char *s)
1122{
1123/* ??rehrauer: I don't know why this fails, since it looks as though
1124 assignments to prompt are wrapped in calls to xstrdup...
1125 if (prompt != NULL)
c50c785c 1126 xfree (prompt);
5796c8dc
SS
1127 */
1128 PROMPT (0) = xstrdup (s);
1129}
1130\f
1131
1132struct qt_args
1133{
1134 char *args;
1135 int from_tty;
1136};
1137
1138/* Callback for iterate_over_inferiors. Kills or detaches the given
1139 inferior, depending on how we originally gained control of it. */
1140
1141static int
1142kill_or_detach (struct inferior *inf, void *args)
1143{
1144 struct qt_args *qt = args;
1145 struct thread_info *thread;
1146
cf7f2e2d
JM
1147 if (inf->pid == 0)
1148 return 0;
1149
5796c8dc
SS
1150 thread = any_thread_of_process (inf->pid);
1151 if (thread != NULL)
1152 {
1153 switch_to_thread (thread->ptid);
1154
1155 /* Leave core files alone. */
1156 if (target_has_execution)
1157 {
1158 if (inf->attach_flag)
1159 target_detach (qt->args, qt->from_tty);
1160 else
1161 target_kill ();
1162 }
1163 }
1164
1165 return 0;
1166}
1167
1168/* Callback for iterate_over_inferiors. Prints info about what GDB
1169 will do to each inferior on a "quit". ARG points to a struct
1170 ui_out where output is to be collected. */
1171
1172static int
1173print_inferior_quit_action (struct inferior *inf, void *arg)
1174{
1175 struct ui_file *stb = arg;
1176
cf7f2e2d
JM
1177 if (inf->pid == 0)
1178 return 0;
1179
5796c8dc
SS
1180 if (inf->attach_flag)
1181 fprintf_filtered (stb,
1182 _("\tInferior %d [%s] will be detached.\n"), inf->num,
1183 target_pid_to_str (pid_to_ptid (inf->pid)));
1184 else
1185 fprintf_filtered (stb,
1186 _("\tInferior %d [%s] will be killed.\n"), inf->num,
1187 target_pid_to_str (pid_to_ptid (inf->pid)));
1188
1189 return 0;
1190}
1191
1192/* If necessary, make the user confirm that we should quit. Return
1193 non-zero if we should quit, zero if we shouldn't. */
1194
1195int
1196quit_confirm (void)
1197{
1198 struct ui_file *stb;
1199 struct cleanup *old_chain;
1200 char *str;
1201 int qr;
1202
1203 /* Don't even ask if we're only debugging a core file inferior. */
1204 if (!have_live_inferiors ())
1205 return 1;
1206
1207 /* Build the query string as a single string. */
1208 stb = mem_fileopen ();
1209 old_chain = make_cleanup_ui_file_delete (stb);
1210
1211 /* This is something of a hack. But there's no reliable way to see
1212 if a GUI is running. The `use_windows' variable doesn't cut
1213 it. */
1214 if (deprecated_init_ui_hook)
1215 fprintf_filtered (stb, _("A debugging session is active.\n"
1216 "Do you still want to close the debugger?"));
1217 else
1218 {
1219 fprintf_filtered (stb, _("A debugging session is active.\n\n"));
1220 iterate_over_inferiors (print_inferior_quit_action, stb);
1221 fprintf_filtered (stb, _("\nQuit anyway? "));
1222 }
1223
1224 str = ui_file_xstrdup (stb, NULL);
1225 make_cleanup (xfree, str);
1226
1227 qr = query ("%s", str);
1228 do_cleanups (old_chain);
1229 return qr;
1230}
1231
1232/* Helper routine for quit_force that requires error handling. */
1233
1234static int
1235quit_target (void *arg)
1236{
1237 struct qt_args *qt = (struct qt_args *)arg;
1238
1239 /* Kill or detach all inferiors. */
1240 iterate_over_inferiors (kill_or_detach, qt);
1241
1242 /* Give all pushed targets a chance to do minimal cleanup, and pop
1243 them all out. */
1244 pop_all_targets (1);
1245
1246 /* Save the history information if it is appropriate to do so. */
1247 if (write_history_p && history_filename)
1248 write_history (history_filename);
1249
c50c785c
JM
1250 do_final_cleanups (ALL_CLEANUPS); /* Do any final cleanups before
1251 exiting. */
5796c8dc
SS
1252 return 0;
1253}
1254
1255/* Quit without asking for confirmation. */
1256
1257void
1258quit_force (char *args, int from_tty)
1259{
1260 int exit_code = 0;
1261 struct qt_args qt;
1262
1263 /* An optional expression may be used to cause gdb to terminate with the
c50c785c 1264 value of that expression. */
5796c8dc
SS
1265 if (args)
1266 {
1267 struct value *val = parse_and_eval (args);
1268
1269 exit_code = (int) value_as_long (val);
1270 }
1271 else if (return_child_result)
1272 exit_code = return_child_result_value;
1273
1274 qt.args = args;
1275 qt.from_tty = from_tty;
1276
1277 /* We want to handle any quit errors and exit regardless. */
1278 catch_errors (quit_target, &qt,
1279 "Quitting: ", RETURN_MASK_ALL);
1280
1281 exit (exit_code);
1282}
1283
5796c8dc
SS
1284/* Returns whether GDB is running on a terminal and input is
1285 currently coming from that terminal. */
1286
1287int
1288input_from_terminal_p (void)
1289{
cf7f2e2d
JM
1290 if (batch_flag)
1291 return 0;
1292
5796c8dc
SS
1293 if (gdb_has_a_terminal () && instream == stdin)
1294 return 1;
1295
1296 /* If INSTREAM is unset, and we are not in a user command, we
1297 must be in Insight. That's like having a terminal, for our
1298 purposes. */
1299 if (instream == NULL && !in_user_command)
1300 return 1;
1301
1302 return 0;
1303}
1304\f
1305static void
1306dont_repeat_command (char *ignored, int from_tty)
1307{
c50c785c
JM
1308 *line = 0; /* Can't call dont_repeat here because we're
1309 not necessarily reading from stdin. */
5796c8dc
SS
1310}
1311\f
1312/* Functions to manipulate command line editing control variables. */
1313
1314/* Number of commands to print in each call to show_commands. */
1315#define Hist_print 10
1316void
1317show_commands (char *args, int from_tty)
1318{
1319 /* Index for history commands. Relative to history_base. */
1320 int offset;
1321
1322 /* Number of the history entry which we are planning to display next.
1323 Relative to history_base. */
1324 static int num = 0;
1325
1326 /* The first command in the history which doesn't exist (i.e. one more
1327 than the number of the last command). Relative to history_base. */
1328 int hist_len;
1329
1330 /* Print out some of the commands from the command history. */
1331 /* First determine the length of the history list. */
1332 hist_len = history_size;
1333 for (offset = 0; offset < history_size; offset++)
1334 {
1335 if (!history_get (history_base + offset))
1336 {
1337 hist_len = offset;
1338 break;
1339 }
1340 }
1341
1342 if (args)
1343 {
1344 if (args[0] == '+' && args[1] == '\0')
1345 /* "info editing +" should print from the stored position. */
1346 ;
1347 else
1348 /* "info editing <exp>" should print around command number <exp>. */
1349 num = (parse_and_eval_long (args) - history_base) - Hist_print / 2;
1350 }
1351 /* "show commands" means print the last Hist_print commands. */
1352 else
1353 {
1354 num = hist_len - Hist_print;
1355 }
1356
1357 if (num < 0)
1358 num = 0;
1359
1360 /* If there are at least Hist_print commands, we want to display the last
1361 Hist_print rather than, say, the last 6. */
1362 if (hist_len - num < Hist_print)
1363 {
1364 num = hist_len - Hist_print;
1365 if (num < 0)
1366 num = 0;
1367 }
1368
1369 for (offset = num; offset < num + Hist_print && offset < hist_len; offset++)
1370 {
1371 printf_filtered ("%5d %s\n", history_base + offset,
1372 (history_get (history_base + offset))->line);
1373 }
1374
1375 /* The next command we want to display is the next one that we haven't
1376 displayed yet. */
1377 num += Hist_print;
1378
1379 /* If the user repeats this command with return, it should do what
1380 "show commands +" does. This is unnecessary if arg is null,
1381 because "show commands +" is not useful after "show commands". */
1382 if (from_tty && args)
1383 {
1384 args[0] = '+';
1385 args[1] = '\0';
1386 }
1387}
1388
1389/* Called by do_setshow_command. */
1390static void
1391set_history_size_command (char *args, int from_tty, struct cmd_list_element *c)
1392{
1393 if (history_size == INT_MAX)
1394 unstifle_history ();
1395 else if (history_size >= 0)
1396 stifle_history (history_size);
1397 else
1398 {
1399 history_size = INT_MAX;
1400 error (_("History size must be non-negative"));
1401 }
1402}
1403
1404void
1405set_history (char *args, int from_tty)
1406{
c50c785c
JM
1407 printf_unfiltered (_("\"set history\" must be followed "
1408 "by the name of a history subcommand.\n"));
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SS
1409 help_list (sethistlist, "set history ", -1, gdb_stdout);
1410}
1411
1412void
1413show_history (char *args, int from_tty)
1414{
1415 cmd_show_list (showhistlist, from_tty, "");
1416}
1417
c50c785c 1418int info_verbose = 0; /* Default verbose msgs off. */
5796c8dc
SS
1419
1420/* Called by do_setshow_command. An elaborate joke. */
1421void
1422set_verbose (char *args, int from_tty, struct cmd_list_element *c)
1423{
1424 char *cmdname = "verbose";
1425 struct cmd_list_element *showcmd;
1426
1427 showcmd = lookup_cmd_1 (&cmdname, showlist, NULL, 1);
c50c785c 1428 gdb_assert (showcmd != NULL && showcmd != CMD_LIST_AMBIGUOUS);
5796c8dc
SS
1429
1430 if (info_verbose)
1431 {
1432 c->doc = "Set verbose printing of informational messages.";
1433 showcmd->doc = "Show verbose printing of informational messages.";
1434 }
1435 else
1436 {
1437 c->doc = "Set verbosity.";
1438 showcmd->doc = "Show verbosity.";
1439 }
1440}
1441
1442/* Init the history buffer. Note that we are called after the init file(s)
c50c785c
JM
1443 have been read so that the user can change the history file via his
1444 .gdbinit file (for instance). The GDBHISTFILE environment variable
1445 overrides all of this. */
5796c8dc
SS
1446
1447void
1448init_history (void)
1449{
1450 char *tmpenv;
1451
1452 tmpenv = getenv ("HISTSIZE");
1453 if (tmpenv)
1454 history_size = atoi (tmpenv);
1455 else if (!history_size)
1456 history_size = 256;
1457
1458 stifle_history (history_size);
1459
1460 tmpenv = getenv ("GDBHISTFILE");
1461 if (tmpenv)
1462 history_filename = xstrdup (tmpenv);
1463 else if (!history_filename)
1464 {
1465 /* We include the current directory so that if the user changes
1466 directories the file written will be the same as the one
1467 that was read. */
1468#ifdef __MSDOS__
1469 /* No leading dots in file names are allowed on MSDOS. */
1470 history_filename = concat (current_directory, "/_gdb_history",
1471 (char *)NULL);
1472#else
1473 history_filename = concat (current_directory, "/.gdb_history",
1474 (char *)NULL);
1475#endif
1476 }
1477 read_history (history_filename);
1478}
1479
1480static void
1481show_new_async_prompt (struct ui_file *file, int from_tty,
1482 struct cmd_list_element *c, const char *value)
1483{
1484 fprintf_filtered (file, _("Gdb's prompt is \"%s\".\n"), value);
1485}
1486
1487static void
1488show_async_command_editing_p (struct ui_file *file, int from_tty,
1489 struct cmd_list_element *c, const char *value)
1490{
c50c785c
JM
1491 fprintf_filtered (file, _("Editing of command lines as "
1492 "they are typed is %s.\n"),
5796c8dc
SS
1493 value);
1494}
1495
1496static void
1497show_annotation_level (struct ui_file *file, int from_tty,
1498 struct cmd_list_element *c, const char *value)
1499{
1500 fprintf_filtered (file, _("Annotation_level is %s.\n"), value);
1501}
1502
1503static void
1504show_exec_done_display_p (struct ui_file *file, int from_tty,
1505 struct cmd_list_element *c, const char *value)
1506{
c50c785c
JM
1507 fprintf_filtered (file, _("Notification of completion for "
1508 "asynchronous execution commands is %s.\n"),
5796c8dc
SS
1509 value);
1510}
1511static void
1512init_main (void)
1513{
5796c8dc
SS
1514 /* initialize the prompt stack to a simple "(gdb) " prompt or to
1515 whatever the DEFAULT_PROMPT is. */
1516 the_prompts.top = 0;
1517 PREFIX (0) = "";
1518 PROMPT (0) = xstrdup (DEFAULT_PROMPT);
1519 SUFFIX (0) = "";
1520 /* Set things up for annotation_level > 1, if the user ever decides
1521 to use it. */
1522 async_annotation_suffix = "prompt";
1523 /* Set the variable associated with the setshow prompt command. */
1524 new_async_prompt = xstrdup (PROMPT (0));
1525
1526 /* If gdb was started with --annotate=2, this is equivalent to the
1527 user entering the command 'set annotate 2' at the gdb prompt, so
1528 we need to do extra processing. */
1529 if (annotation_level > 1)
1530 set_async_annotation_level (NULL, 0, NULL);
1531
1532 /* Set the important stuff up for command editing. */
1533 command_editing_p = 1;
1534 history_expansion_p = 0;
1535 write_history_p = 0;
1536
1537 /* Setup important stuff for command line editing. */
1538 rl_completion_word_break_hook = gdb_completion_word_break_characters;
1539 rl_completion_entry_function = readline_line_completion_function;
1540 rl_completer_word_break_characters = default_word_break_characters ();
1541 rl_completer_quote_characters = get_gdb_completer_quote_characters ();
1542 rl_readline_name = "gdb";
1543 rl_terminal_name = getenv ("TERM");
1544
1545 /* The name for this defun comes from Bash, where it originated.
1546 15 is Control-o, the same binding this function has in Bash. */
1547 rl_add_defun ("operate-and-get-next", gdb_rl_operate_and_get_next, 15);
1548
1549 add_setshow_string_cmd ("prompt", class_support,
c50c785c
JM
1550 &new_async_prompt,
1551 _("Set gdb's prompt"),
1552 _("Show gdb's prompt"),
1553 NULL, set_async_prompt,
5796c8dc
SS
1554 show_new_async_prompt,
1555 &setlist, &showlist);
1556
1557 add_com ("dont-repeat", class_support, dont_repeat_command, _("\
c50c785c
JM
1558Don't repeat this command.\nPrimarily \
1559used inside of user-defined commands that should not be repeated when\n\
5796c8dc
SS
1560hitting return."));
1561
1562 add_setshow_boolean_cmd ("editing", class_support,
1563 &async_command_editing_p, _("\
1564Set editing of command lines as they are typed."), _("\
1565Show editing of command lines as they are typed."), _("\
1566Use \"on\" to enable the editing, and \"off\" to disable it.\n\
1567Without an argument, command line editing is enabled. To edit, use\n\
1568EMACS-like or VI-like commands like control-P or ESC."),
1569 set_async_editing_command,
1570 show_async_command_editing_p,
1571 &setlist, &showlist);
1572
1573 add_setshow_boolean_cmd ("save", no_class, &write_history_p, _("\
1574Set saving of the history record on exit."), _("\
1575Show saving of the history record on exit."), _("\
1576Use \"on\" to enable the saving, and \"off\" to disable it.\n\
1577Without an argument, saving is enabled."),
1578 NULL,
1579 show_write_history_p,
1580 &sethistlist, &showhistlist);
1581
1582 add_setshow_integer_cmd ("size", no_class, &history_size, _("\
1583Set the size of the command history,"), _("\
1584Show the size of the command history,"), _("\
1585ie. the number of previous commands to keep a record of."),
1586 set_history_size_command,
1587 show_history_size,
1588 &sethistlist, &showhistlist);
1589
1590 add_setshow_filename_cmd ("filename", no_class, &history_filename, _("\
1591Set the filename in which to record the command history"), _("\
1592Show the filename in which to record the command history"), _("\
1593(the list of previous commands of which a record is kept)."),
1594 NULL,
1595 show_history_filename,
1596 &sethistlist, &showhistlist);
1597
1598 add_setshow_boolean_cmd ("confirm", class_support, &caution, _("\
1599Set whether to confirm potentially dangerous operations."), _("\
1600Show whether to confirm potentially dangerous operations."), NULL,
1601 NULL,
1602 show_caution,
1603 &setlist, &showlist);
1604
1605 add_setshow_zinteger_cmd ("annotate", class_obscure, &annotation_level, _("\
1606Set annotation_level."), _("\
1607Show annotation_level."), _("\
16080 == normal; 1 == fullname (for use when running under emacs)\n\
16092 == output annotated suitably for use by programs that control GDB."),
1610 set_async_annotation_level,
1611 show_annotation_level,
1612 &setlist, &showlist);
1613
1614 add_setshow_boolean_cmd ("exec-done-display", class_support,
1615 &exec_done_display_p, _("\
1616Set notification of completion for asynchronous execution commands."), _("\
1617Show notification of completion for asynchronous execution commands."), _("\
1618Use \"on\" to enable the notification, and \"off\" to disable it."),
1619 NULL,
1620 show_exec_done_display_p,
1621 &setlist, &showlist);
1622
5796c8dc
SS
1623 add_setshow_filename_cmd ("data-directory", class_maintenance,
1624 &gdb_datadir, _("Set GDB's data directory."),
1625 _("Show GDB's data directory."),
1626 _("\
1627When set, GDB uses the specified path to search for data files."),
1628 NULL, NULL,
1629 &setlist,
1630 &showlist);
1631}
1632
1633void
1634gdb_init (char *argv0)
1635{
1636 if (pre_init_ui_hook)
1637 pre_init_ui_hook ();
1638
c50c785c 1639 /* Run the init function of each source file. */
5796c8dc
SS
1640
1641#ifdef __MSDOS__
1642 /* Make sure we return to the original directory upon exit, come
1643 what may, since the OS doesn't do that for us. */
1644 make_final_cleanup (do_chdir_cleanup, xstrdup (current_directory));
1645#endif
1646
c50c785c
JM
1647 init_cmd_lists (); /* This needs to be done first. */
1648 initialize_targets (); /* Setup target_terminal macros for utils.c. */
1649 initialize_utils (); /* Make errors and warnings possible. */
1650
1651 /* Here is where we call all the _initialize_foo routines. */
5796c8dc 1652 initialize_all_files ();
c50c785c 1653
cf7f2e2d
JM
1654 /* This creates the current_program_space. Do this after all the
1655 _initialize_foo routines have had a chance to install their
1656 per-sspace data keys. Also do this before
1657 initialize_current_architecture is called, because it accesses
1658 exec_bfd of the current program space. */
1659 initialize_progspace ();
1660 initialize_inferiors ();
5796c8dc
SS
1661 initialize_current_architecture ();
1662 init_cli_cmds();
c50c785c 1663 init_main (); /* But that omits this file! Do it now. */
5796c8dc
SS
1664
1665 initialize_stdin_serial ();
1666
1667 async_init_signals ();
1668
c50c785c
JM
1669 /* We need a default language for parsing expressions, so simple
1670 things like "set width 0" won't fail if no language is explicitly
1671 set in a config file or implicitly set by reading an executable
1672 during startup. */
5796c8dc 1673 set_language (language_c);
c50c785c 1674 expected_language = current_language; /* Don't warn about the change. */
5796c8dc 1675
c50c785c 1676 /* Allow another UI to initialize. If the UI fails to initialize,
5796c8dc
SS
1677 and it wants GDB to revert to the CLI, it should clear
1678 deprecated_init_ui_hook. */
1679 if (deprecated_init_ui_hook)
1680 deprecated_init_ui_hook (argv0);
c50c785c
JM
1681
1682#ifdef HAVE_PYTHON
1683 /* Python initialization can require various commands to be
1684 installed. For example "info pretty-printer" needs the "info"
1685 prefix to be installed. Keep things simple and just do final
1686 python initialization here. */
1687 finish_python_initialization ();
1688#endif
5796c8dc 1689}