gdb: GC old versions
[dragonfly.git] / contrib / gdb-7 / gdb / top.c
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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,
5 2008, 2009 Free Software Foundation, Inc.
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"
50
51/* readline include files */
52#include "readline/readline.h"
53#include "readline/history.h"
54
55/* readline defines this. */
56#undef savestring
57
58#include <sys/types.h>
59
60#include "event-top.h"
61#include "gdb_string.h"
62#include "gdb_stat.h"
63#include <ctype.h>
64#include "ui-out.h"
65#include "cli-out.h"
66
67/* Default command line prompt. This is overriden in some configs. */
68
69#ifndef DEFAULT_PROMPT
70#define DEFAULT_PROMPT "(gdb) "
71#endif
72
73/* Initialization file name for gdb. This is overridden in some configs. */
74
75#ifndef PATH_MAX
76# ifdef FILENAME_MAX
77# define PATH_MAX FILENAME_MAX
78# else
79# define PATH_MAX 512
80# endif
81#endif
82
83#ifndef GDBINIT_FILENAME
84#define GDBINIT_FILENAME ".gdbinit"
85#endif
86char gdbinit[PATH_MAX + 1] = GDBINIT_FILENAME;
87
88int inhibit_gdbinit = 0;
89
90/* If nonzero, and GDB has been configured to be able to use windows,
91 attempt to open them upon startup. */
92
93int use_windows = 0;
94
95extern char lang_frame_mismatch_warn[]; /* language.c */
96
97/* Flag for whether we want all the "from_tty" gubbish printed. */
98
99int caution = 1; /* Default is yes, sigh. */
100static void
101show_caution (struct ui_file *file, int from_tty,
102 struct cmd_list_element *c, const char *value)
103{
104 fprintf_filtered (file, _("\
105Whether to confirm potentially dangerous operations is %s.\n"),
106 value);
107}
108
109/* stdio stream that command input is being read from. Set to stdin normally.
110 Set by source_command to the file we are sourcing. Set to NULL if we are
111 executing a user-defined command or interacting via a GUI. */
112
113FILE *instream;
114
115/* Flag to indicate whether a user defined command is currently running. */
116
117int in_user_command;
118
119/* Current working directory. */
120
121char *current_directory;
122
123/* The directory name is actually stored here (usually). */
124char gdb_dirbuf[1024];
125
126/* Function to call before reading a command, if nonzero.
127 The function receives two args: an input stream,
128 and a prompt string. */
129
130void (*window_hook) (FILE *, char *);
131
132int epoch_interface;
133int xgdb_verbose;
134
135/* Buffer used for reading command lines, and the size
136 allocated for it so far. */
137
138char *line;
139int linesize = 100;
140
141/* Nonzero if the current command is modified by "server ". This
142 affects things like recording into the command history, commands
143 repeating on RETURN, etc. This is so a user interface (emacs, GUI,
144 whatever) can issue its own commands and also send along commands
145 from the user, and have the user not notice that the user interface
146 is issuing commands too. */
147int server_command;
148
149/* Baud rate specified for talking to serial target systems. Default
150 is left as -1, so targets can choose their own defaults. */
151/* FIXME: This means that "show remotebaud" and gr_files_info can print -1
152 or (unsigned int)-1. This is a Bad User Interface. */
153
154int baud_rate = -1;
155
156/* Timeout limit for response from target. */
157
158/* The default value has been changed many times over the years. It
159 was originally 5 seconds. But that was thought to be a long time
160 to sit and wait, so it was changed to 2 seconds. That was thought
161 to be plenty unless the connection was going through some terminal
162 server or multiplexer or other form of hairy serial connection.
163
164 In mid-1996, remote_timeout was moved from remote.c to top.c and
165 it began being used in other remote-* targets. It appears that the
166 default was changed to 20 seconds at that time, perhaps because the
167 Renesas E7000 ICE didn't always respond in a timely manner.
168
169 But if 5 seconds is a long time to sit and wait for retransmissions,
170 20 seconds is far worse. This demonstrates the difficulty of using
171 a single variable for all protocol timeouts.
172
173 As remote.c is used much more than remote-e7000.c, it was changed
174 back to 2 seconds in 1999. */
175
176int remote_timeout = 2;
177
178/* Non-zero tells remote* modules to output debugging info. */
179
180int remote_debug = 0;
181
182/* Sbrk location on entry to main. Used for statistics only. */
183#ifdef HAVE_SBRK
184char *lim_at_start;
185#endif
186
187/* Signal to catch ^Z typed while reading a command: SIGTSTP or SIGCONT. */
188
189#ifndef STOP_SIGNAL
190#ifdef SIGTSTP
191#define STOP_SIGNAL SIGTSTP
192static void stop_sig (int);
193#endif
194#endif
195
196/* Hooks for alternate command interfaces. */
197
198/* Called after most modules have been initialized, but before taking users
199 command file.
200
201 If the UI fails to initialize and it wants GDB to continue
202 using the default UI, then it should clear this hook before returning. */
203
204void (*deprecated_init_ui_hook) (char *argv0);
205
206/* This hook is called from within gdb's many mini-event loops which could
207 steal control from a real user interface's event loop. It returns
208 non-zero if the user is requesting a detach, zero otherwise. */
209
210int (*deprecated_ui_loop_hook) (int);
211
212/* Called instead of command_loop at top level. Can be invoked via
213 throw_exception(). */
214
215void (*deprecated_command_loop_hook) (void);
216
217
218/* Called from print_frame_info to list the line we stopped in. */
219
220void (*deprecated_print_frame_info_listing_hook) (struct symtab * s, int line,
221 int stopline, int noerror);
222/* Replaces most of query. */
223
224int (*deprecated_query_hook) (const char *, va_list);
225
226/* Replaces most of warning. */
227
228void (*deprecated_warning_hook) (const char *, va_list);
229
230/* These three functions support getting lines of text from the user.
231 They are used in sequence. First deprecated_readline_begin_hook is
232 called with a text string that might be (for example) a message for
233 the user to type in a sequence of commands to be executed at a
234 breakpoint. If this function calls back to a GUI, it might take
235 this opportunity to pop up a text interaction window with this
236 message. Next, deprecated_readline_hook is called with a prompt
237 that is emitted prior to collecting the user input. It can be
238 called multiple times. Finally, deprecated_readline_end_hook is
239 called to notify the GUI that we are done with the interaction
240 window and it can close it. */
241
242void (*deprecated_readline_begin_hook) (char *, ...);
243char *(*deprecated_readline_hook) (char *);
244void (*deprecated_readline_end_hook) (void);
245
246/* Called as appropriate to notify the interface that we have attached
247 to or detached from an already running process. */
248
249void (*deprecated_attach_hook) (void);
250void (*deprecated_detach_hook) (void);
251
252/* Called during long calculations to allow GUI to repair window damage, and to
253 check for stop buttons, etc... */
254
255void (*deprecated_interactive_hook) (void);
256
257/* Tell the GUI someone changed the register REGNO. -1 means
258 that the caller does not know which register changed or
259 that several registers have changed (see value_assign). */
260void (*deprecated_register_changed_hook) (int regno);
261
262/* Tell the GUI someone changed LEN bytes of memory at ADDR */
263void (*deprecated_memory_changed_hook) (CORE_ADDR addr, int len);
264
265/* Called when going to wait for the target. Usually allows the GUI to run
266 while waiting for target events. */
267
268ptid_t (*deprecated_target_wait_hook) (ptid_t ptid,
269 struct target_waitstatus *status,
270 int options);
271
272/* Used by UI as a wrapper around command execution. May do various things
273 like enabling/disabling buttons, etc... */
274
275void (*deprecated_call_command_hook) (struct cmd_list_element * c, char *cmd,
276 int from_tty);
277
278/* Called after a `set' command has finished. Is only run if the
279 `set' command succeeded. */
280
281void (*deprecated_set_hook) (struct cmd_list_element * c);
282
283/* Called when the current thread changes. Argument is thread id. */
284
285void (*deprecated_context_hook) (int id);
286
287/* Handler for SIGHUP. */
288
289#ifdef SIGHUP
290/* NOTE 1999-04-29: This function will be static again, once we modify
291 gdb to use the event loop as the default command loop and we merge
292 event-top.c into this file, top.c */
293/* static */ int
294quit_cover (void *s)
295{
296 caution = 0; /* Throw caution to the wind -- we're exiting.
297 This prevents asking the user dumb questions. */
298 quit_command ((char *) 0, 0);
299 return 0;
300}
301#endif /* defined SIGHUP */
302\f
303/* Line number we are currently in in a file which is being sourced. */
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
306 event-top.c into this file, top.c */
307/* static */ int source_line_number;
308
309/* Name of the file we are sourcing. */
310/* NOTE 1999-04-29: This variable will be static again, once we modify
311 gdb to use the event loop as the default command loop and we merge
312 event-top.c into this file, top.c */
313/* static */ char *source_file_name;
314
315/* Clean up on error during a "source" command (or execution of a
316 user-defined command). */
317
318void
319do_restore_instream_cleanup (void *stream)
320{
321 /* Restore the previous input stream. */
322 instream = stream;
323}
324
325/* Read commands from STREAM. */
326void
327read_command_file (FILE *stream)
328{
329 struct cleanup *cleanups;
330
331 cleanups = make_cleanup (do_restore_instream_cleanup, instream);
332 instream = stream;
333 command_loop ();
334 do_cleanups (cleanups);
335}
336\f
337void (*pre_init_ui_hook) (void);
338
339#ifdef __MSDOS__
340void
341do_chdir_cleanup (void *old_dir)
342{
343 chdir (old_dir);
344 xfree (old_dir);
345}
346#endif
347
348void
349prepare_execute_command (void)
350{
351 free_all_values ();
352
353 /* With multiple threads running while the one we're examining is stopped,
354 the dcache can get stale without us being able to detect it.
355 For the duration of the command, though, use the dcache to help
356 things like backtrace. */
357 if (non_stop)
358 target_dcache_invalidate ();
359}
360
361/* Execute the line P as a command, in the current user context.
362 Pass FROM_TTY as second argument to the defining function. */
363
364void
365execute_command (char *p, int from_tty)
366{
367 struct cmd_list_element *c;
368 enum language flang;
369 static int warned = 0;
370 char *line;
371 long time_at_cmd_start = 0;
372#ifdef HAVE_SBRK
373 long space_at_cmd_start = 0;
374#endif
375 extern int display_time;
376 extern int display_space;
377
378 if (target_can_async_p ())
379 {
380 time_at_cmd_start = get_run_time ();
381
382 if (display_space)
383 {
384#ifdef HAVE_SBRK
385 char *lim = (char *) sbrk (0);
386 space_at_cmd_start = lim - lim_at_start;
387#endif
388 }
389 }
390
391 prepare_execute_command ();
392
393 /* Force cleanup of any alloca areas if using C alloca instead of
394 a builtin alloca. */
395 alloca (0);
396
397 /* This can happen when command_line_input hits end of file. */
398 if (p == NULL)
399 return;
400
401 target_log_command (p);
402
403 while (*p == ' ' || *p == '\t')
404 p++;
405 if (*p)
406 {
407 char *arg;
408 line = p;
409
410 /* If trace-commands is set then this will print this command. */
411 print_command_trace (p);
412
413 c = lookup_cmd (&p, cmdlist, "", 0, 1);
414
415 /* Pass null arg rather than an empty one. */
416 arg = *p ? p : 0;
417
418 /* FIXME: cagney/2002-02-02: The c->type test is pretty dodgy
419 while the is_complete_command(cfunc) test is just plain
420 bogus. They should both be replaced by a test of the form
421 c->strip_trailing_white_space_p. */
422 /* NOTE: cagney/2002-02-02: The function.cfunc in the below
423 can't be replaced with func. This is because it is the
424 cfunc, and not the func, that has the value that the
425 is_complete_command hack is testing for. */
426 /* Clear off trailing whitespace, except for set and complete
427 command. */
428 if (arg
429 && c->type != set_cmd
430 && !is_complete_command (c))
431 {
432 p = arg + strlen (arg) - 1;
433 while (p >= arg && (*p == ' ' || *p == '\t'))
434 p--;
435 *(p + 1) = '\0';
436 }
437
438 /* If this command has been pre-hooked, run the hook first. */
439 execute_cmd_pre_hook (c);
440
441 if (c->flags & DEPRECATED_WARN_USER)
442 deprecated_cmd_warning (&line);
443
444 if (c->class == class_user)
445 execute_user_command (c, arg);
446 else if (c->type == set_cmd || c->type == show_cmd)
447 do_setshow_command (arg, from_tty & caution, c);
448 else if (!cmd_func_p (c))
449 error (_("That is not a command, just a help topic."));
450 else if (deprecated_call_command_hook)
451 deprecated_call_command_hook (c, arg, from_tty & caution);
452 else
453 cmd_func (c, arg, from_tty & caution);
454
455 /* If this command has been post-hooked, run the hook last. */
456 execute_cmd_post_hook (c);
457
458 }
459
460 /* Tell the user if the language has changed (except first time). */
461 if (current_language != expected_language)
462 {
463 if (language_mode == language_mode_auto)
464 {
465 language_info (1); /* Print what changed. */
466 }
467 warned = 0;
468 }
469
470 /* Warn the user if the working language does not match the
471 language of the current frame. Only warn the user if we are
472 actually running the program, i.e. there is a stack. */
473 /* FIXME: This should be cacheing the frame and only running when
474 the frame changes. */
475
476 if (has_stack_frames ())
477 {
478 flang = get_frame_language ();
479 if (!warned
480 && flang != language_unknown
481 && flang != current_language->la_language)
482 {
483 printf_filtered ("%s\n", lang_frame_mismatch_warn);
484 warned = 1;
485 }
486 }
487}
488
489/* Read commands from `instream' and execute them
490 until end of file or error reading instream. */
491
492void
493command_loop (void)
494{
495 struct cleanup *old_chain;
496 char *command;
497 int stdin_is_tty = ISATTY (stdin);
498 long time_at_cmd_start;
499#ifdef HAVE_SBRK
500 long space_at_cmd_start = 0;
501#endif
502 extern int display_time;
503 extern int display_space;
504
505 while (instream && !feof (instream))
506 {
507 if (window_hook && instream == stdin)
508 (*window_hook) (instream, get_prompt ());
509
510 quit_flag = 0;
511 if (instream == stdin && stdin_is_tty)
512 reinitialize_more_filter ();
513 old_chain = make_cleanup (null_cleanup, 0);
514
515 /* Get a command-line. This calls the readline package. */
516 command = command_line_input (instream == stdin ?
517 get_prompt () : (char *) NULL,
518 instream == stdin, "prompt");
519 if (command == 0)
520 return;
521
522 time_at_cmd_start = get_run_time ();
523
524 if (display_space)
525 {
526#ifdef HAVE_SBRK
527 char *lim = (char *) sbrk (0);
528 space_at_cmd_start = lim - lim_at_start;
529#endif
530 }
531
532 execute_command (command, instream == stdin);
533
534 /* Do any commands attached to breakpoint we are stopped at. */
535 bpstat_do_actions ();
536
537 do_cleanups (old_chain);
538
539 if (display_time)
540 {
541 long cmd_time = get_run_time () - time_at_cmd_start;
542
543 printf_unfiltered (_("Command execution time: %ld.%06ld\n"),
544 cmd_time / 1000000, cmd_time % 1000000);
545 }
546
547 if (display_space)
548 {
549#ifdef HAVE_SBRK
550 char *lim = (char *) sbrk (0);
551 long space_now = lim - lim_at_start;
552 long space_diff = space_now - space_at_cmd_start;
553
554 printf_unfiltered (_("Space used: %ld (%s%ld for this command)\n"),
555 space_now,
556 (space_diff >= 0 ? "+" : ""),
557 space_diff);
558#endif
559 }
560 }
561}
562\f
563/* Commands call this if they do not want to be repeated by null lines. */
564
565void
566dont_repeat (void)
567{
568 if (server_command)
569 return;
570
571 /* If we aren't reading from standard input, we are saving the last
572 thing read from stdin in line and don't want to delete it. Null lines
573 won't repeat here in any case. */
574 if (instream == stdin)
575 *line = 0;
576}
577\f
578/* Read a line from the stream "instream" without command line editing.
579
580 It prints PROMPT_ARG once at the start.
581 Action is compatible with "readline", e.g. space for the result is
582 malloc'd and should be freed by the caller.
583
584 A NULL return means end of file. */
585char *
586gdb_readline (char *prompt_arg)
587{
588 int c;
589 char *result;
590 int input_index = 0;
591 int result_size = 80;
592
593 if (prompt_arg)
594 {
595 /* Don't use a _filtered function here. It causes the assumed
596 character position to be off, since the newline we read from
597 the user is not accounted for. */
598 fputs_unfiltered (prompt_arg, gdb_stdout);
599 gdb_flush (gdb_stdout);
600 }
601
602 result = (char *) xmalloc (result_size);
603
604 while (1)
605 {
606 /* Read from stdin if we are executing a user defined command.
607 This is the right thing for prompt_for_continue, at least. */
608 c = fgetc (instream ? instream : stdin);
609
610 if (c == EOF)
611 {
612 if (input_index > 0)
613 /* The last line does not end with a newline. Return it, and
614 if we are called again fgetc will still return EOF and
615 we'll return NULL then. */
616 break;
617 xfree (result);
618 return NULL;
619 }
620
621 if (c == '\n')
622 {
623 if (input_index > 0 && result[input_index - 1] == '\r')
624 input_index--;
625 break;
626 }
627
628 result[input_index++] = c;
629 while (input_index >= result_size)
630 {
631 result_size *= 2;
632 result = (char *) xrealloc (result, result_size);
633 }
634 }
635
636 result[input_index++] = '\0';
637 return result;
638}
639
640/* Variables which control command line editing and history
641 substitution. These variables are given default values at the end
642 of this file. */
643static int command_editing_p;
644
645/* NOTE 1999-04-29: This variable will be static again, once we modify
646 gdb to use the event loop as the default command loop and we merge
647 event-top.c into this file, top.c */
648
649/* static */ int history_expansion_p;
650
651static int write_history_p;
652static void
653show_write_history_p (struct ui_file *file, int from_tty,
654 struct cmd_list_element *c, const char *value)
655{
656 fprintf_filtered (file, _("Saving of the history record on exit is %s.\n"),
657 value);
658}
659
660static int history_size;
661static void
662show_history_size (struct ui_file *file, int from_tty,
663 struct cmd_list_element *c, const char *value)
664{
665 fprintf_filtered (file, _("The size of the command history is %s.\n"),
666 value);
667}
668
669static char *history_filename;
670static void
671show_history_filename (struct ui_file *file, int from_tty,
672 struct cmd_list_element *c, const char *value)
673{
674 fprintf_filtered (file, _("\
675The filename in which to record the command history is \"%s\".\n"),
676 value);
677}
678
679/* This is like readline(), but it has some gdb-specific behavior.
680 gdb may want readline in both the synchronous and async modes during
681 a single gdb invocation. At the ordinary top-level prompt we might
682 be using the async readline. That means we can't use
683 rl_pre_input_hook, since it doesn't work properly in async mode.
684 However, for a secondary prompt (" >", such as occurs during a
685 `define'), gdb wants a synchronous response.
686
687 We used to call readline() directly, running it in synchronous
688 mode. But mixing modes this way is not supported, and as of
689 readline 5.x it no longer works; the arrow keys come unbound during
690 the synchronous call. So we make a nested call into the event
691 loop. That's what gdb_readline_wrapper is for. */
692
693/* A flag set as soon as gdb_readline_wrapper_line is called; we can't
694 rely on gdb_readline_wrapper_result, which might still be NULL if
695 the user types Control-D for EOF. */
696static int gdb_readline_wrapper_done;
697
698/* The result of the current call to gdb_readline_wrapper, once a newline
699 is seen. */
700static char *gdb_readline_wrapper_result;
701
702/* Any intercepted hook. Operate-and-get-next sets this, expecting it
703 to be called after the newline is processed (which will redisplay
704 the prompt). But in gdb_readline_wrapper we will not get a new
705 prompt until the next call, or until we return to the event loop.
706 So we disable this hook around the newline and restore it before we
707 return. */
708static void (*saved_after_char_processing_hook) (void);
709
710/* This function is called when readline has seen a complete line of
711 text. */
712
713static void
714gdb_readline_wrapper_line (char *line)
715{
716 gdb_assert (!gdb_readline_wrapper_done);
717 gdb_readline_wrapper_result = line;
718 gdb_readline_wrapper_done = 1;
719
720 /* Prevent operate-and-get-next from acting too early. */
721 saved_after_char_processing_hook = after_char_processing_hook;
722 after_char_processing_hook = NULL;
723
724 /* Prevent parts of the prompt from being redisplayed if annotations
725 are enabled, and readline's state getting out of sync. */
726 if (async_command_editing_p)
727 rl_callback_handler_remove ();
728}
729
730struct gdb_readline_wrapper_cleanup
731 {
732 void (*handler_orig) (char *);
733 int already_prompted_orig;
734 };
735
736static void
737gdb_readline_wrapper_cleanup (void *arg)
738{
739 struct gdb_readline_wrapper_cleanup *cleanup = arg;
740
741 rl_already_prompted = cleanup->already_prompted_orig;
742
743 gdb_assert (input_handler == gdb_readline_wrapper_line);
744 input_handler = cleanup->handler_orig;
745 gdb_readline_wrapper_result = NULL;
746 gdb_readline_wrapper_done = 0;
747
748 after_char_processing_hook = saved_after_char_processing_hook;
749 saved_after_char_processing_hook = NULL;
750
751 xfree (cleanup);
752}
753
754char *
755gdb_readline_wrapper (char *prompt)
756{
757 struct cleanup *back_to;
758 struct gdb_readline_wrapper_cleanup *cleanup;
759 char *retval;
760
761 cleanup = xmalloc (sizeof (*cleanup));
762 cleanup->handler_orig = input_handler;
763 input_handler = gdb_readline_wrapper_line;
764
765 cleanup->already_prompted_orig = rl_already_prompted;
766
767 back_to = make_cleanup (gdb_readline_wrapper_cleanup, cleanup);
768
769 /* Display our prompt and prevent double prompt display. */
770 display_gdb_prompt (prompt);
771 rl_already_prompted = 1;
772
773 if (after_char_processing_hook)
774 (*after_char_processing_hook) ();
775 gdb_assert (after_char_processing_hook == NULL);
776
777 /* gdb_do_one_event argument is unused. */
778 while (gdb_do_one_event (NULL) >= 0)
779 if (gdb_readline_wrapper_done)
780 break;
781
782 retval = gdb_readline_wrapper_result;
783 do_cleanups (back_to);
784 return retval;
785}
786
787\f
788#ifdef STOP_SIGNAL
789static void
790stop_sig (int signo)
791{
792#if STOP_SIGNAL == SIGTSTP
793 signal (SIGTSTP, SIG_DFL);
794#if HAVE_SIGPROCMASK
795 {
796 sigset_t zero;
797
798 sigemptyset (&zero);
799 sigprocmask (SIG_SETMASK, &zero, 0);
800 }
801#elif HAVE_SIGSETMASK
802 sigsetmask (0);
803#endif
804 kill (getpid (), SIGTSTP);
805 signal (SIGTSTP, stop_sig);
806#else
807 signal (STOP_SIGNAL, stop_sig);
808#endif
809 printf_unfiltered ("%s", get_prompt ());
810 gdb_flush (gdb_stdout);
811
812 /* Forget about any previous command -- null line now will do nothing. */
813 dont_repeat ();
814}
815#endif /* STOP_SIGNAL */
816
817/* Initialize signal handlers. */
818static void
819float_handler (int signo)
820{
821 /* This message is based on ANSI C, section 4.7. Note that integer
822 divide by zero causes this, so "float" is a misnomer. */
823 signal (SIGFPE, float_handler);
824 error (_("Erroneous arithmetic operation."));
825}
826
827static void
828do_nothing (int signo)
829{
830 /* Under System V the default disposition of a signal is reinstated after
831 the signal is caught and delivered to an application process. On such
832 systems one must restore the replacement signal handler if one wishes
833 to continue handling the signal in one's program. On BSD systems this
834 is not needed but it is harmless, and it simplifies the code to just do
835 it unconditionally. */
836 signal (signo, do_nothing);
837}
838
839/* The current saved history number from operate-and-get-next.
840 This is -1 if not valid. */
841static int operate_saved_history = -1;
842
843/* This is put on the appropriate hook and helps operate-and-get-next
844 do its work. */
845static void
846gdb_rl_operate_and_get_next_completion (void)
847{
848 int delta = where_history () - operate_saved_history;
849 /* The `key' argument to rl_get_previous_history is ignored. */
850 rl_get_previous_history (delta, 0);
851 operate_saved_history = -1;
852
853 /* readline doesn't automatically update the display for us. */
854 rl_redisplay ();
855
856 after_char_processing_hook = NULL;
857 rl_pre_input_hook = NULL;
858}
859
860/* This is a gdb-local readline command handler. It accepts the
861 current command line (like RET does) and, if this command was taken
862 from the history, arranges for the next command in the history to
863 appear on the command line when the prompt returns.
864 We ignore the arguments. */
865static int
866gdb_rl_operate_and_get_next (int count, int key)
867{
868 int where;
869
870 /* Use the async hook. */
871 after_char_processing_hook = gdb_rl_operate_and_get_next_completion;
872
873 /* Find the current line, and find the next line to use. */
874 where = where_history();
875
876 /* FIXME: kettenis/20020817: max_input_history is renamed into
877 history_max_entries in readline-4.2. When we do a new readline
878 import, we should probably change it here too, even though
879 readline maintains backwards compatibility for now by still
880 defining max_input_history. */
881 if ((history_is_stifled () && (history_length >= max_input_history)) ||
882 (where >= history_length - 1))
883 operate_saved_history = where;
884 else
885 operate_saved_history = where + 1;
886
887 return rl_newline (1, key);
888}
889\f
890/* Read one line from the command input stream `instream'
891 into the local static buffer `linebuffer' (whose current length
892 is `linelength').
893 The buffer is made bigger as necessary.
894 Returns the address of the start of the line.
895
896 NULL is returned for end of file.
897
898 *If* the instream == stdin & stdin is a terminal, the line read
899 is copied into the file line saver (global var char *line,
900 length linesize) so that it can be duplicated.
901
902 This routine either uses fancy command line editing or
903 simple input as the user has requested. */
904
905char *
906command_line_input (char *prompt_arg, int repeat, char *annotation_suffix)
907{
908 static char *linebuffer = 0;
909 static unsigned linelength = 0;
910 char *p;
911 char *p1;
912 char *rl;
913 char *local_prompt = prompt_arg;
914 char *nline;
915 char got_eof = 0;
916
917 /* The annotation suffix must be non-NULL. */
918 if (annotation_suffix == NULL)
919 annotation_suffix = "";
920
921 if (annotation_level > 1 && instream == stdin)
922 {
923 local_prompt = alloca ((prompt_arg == NULL ? 0 : strlen (prompt_arg))
924 + strlen (annotation_suffix) + 40);
925 if (prompt_arg == NULL)
926 local_prompt[0] = '\0';
927 else
928 strcpy (local_prompt, prompt_arg);
929 strcat (local_prompt, "\n\032\032");
930 strcat (local_prompt, annotation_suffix);
931 strcat (local_prompt, "\n");
932 }
933
934 if (linebuffer == 0)
935 {
936 linelength = 80;
937 linebuffer = (char *) xmalloc (linelength);
938 }
939
940 p = linebuffer;
941
942 /* Control-C quits instantly if typed while in this loop
943 since it should not wait until the user types a newline. */
944 immediate_quit++;
945#ifdef STOP_SIGNAL
946 if (job_control)
947 signal (STOP_SIGNAL, handle_stop_sig);
948#endif
949
950 while (1)
951 {
952 /* Make sure that all output has been output. Some machines may let
953 you get away with leaving out some of the gdb_flush, but not all. */
954 wrap_here ("");
955 gdb_flush (gdb_stdout);
956 gdb_flush (gdb_stderr);
957
958 if (source_file_name != NULL)
959 ++source_line_number;
960
961 if (annotation_level > 1 && instream == stdin)
962 {
963 puts_unfiltered ("\n\032\032pre-");
964 puts_unfiltered (annotation_suffix);
965 puts_unfiltered ("\n");
966 }
967
968 /* Don't use fancy stuff if not talking to stdin. */
969 if (deprecated_readline_hook && input_from_terminal_p ())
970 {
971 rl = (*deprecated_readline_hook) (local_prompt);
972 }
973 else if (command_editing_p && input_from_terminal_p ())
974 {
975 rl = gdb_readline_wrapper (local_prompt);
976 }
977 else
978 {
979 rl = gdb_readline (local_prompt);
980 }
981
982 if (annotation_level > 1 && instream == stdin)
983 {
984 puts_unfiltered ("\n\032\032post-");
985 puts_unfiltered (annotation_suffix);
986 puts_unfiltered ("\n");
987 }
988
989 if (!rl || rl == (char *) EOF)
990 {
991 got_eof = 1;
992 break;
993 }
994 if (strlen (rl) + 1 + (p - linebuffer) > linelength)
995 {
996 linelength = strlen (rl) + 1 + (p - linebuffer);
997 nline = (char *) xrealloc (linebuffer, linelength);
998 p += nline - linebuffer;
999 linebuffer = nline;
1000 }
1001 p1 = rl;
1002 /* Copy line. Don't copy null at end. (Leaves line alone
1003 if this was just a newline) */
1004 while (*p1)
1005 *p++ = *p1++;
1006
1007 xfree (rl); /* Allocated in readline. */
1008
1009 if (p == linebuffer || *(p - 1) != '\\')
1010 break;
1011
1012 p--; /* Put on top of '\'. */
1013 local_prompt = (char *) 0;
1014 }
1015
1016#ifdef STOP_SIGNAL
1017 if (job_control)
1018 signal (STOP_SIGNAL, SIG_DFL);
1019#endif
1020 immediate_quit--;
1021
1022 if (got_eof)
1023 return NULL;
1024
1025#define SERVER_COMMAND_LENGTH 7
1026 server_command =
1027 (p - linebuffer > SERVER_COMMAND_LENGTH)
1028 && strncmp (linebuffer, "server ", SERVER_COMMAND_LENGTH) == 0;
1029 if (server_command)
1030 {
1031 /* Note that we don't set `line'. Between this and the check in
1032 dont_repeat, this insures that repeating will still do the
1033 right thing. */
1034 *p = '\0';
1035 return linebuffer + SERVER_COMMAND_LENGTH;
1036 }
1037
1038 /* Do history expansion if that is wished. */
1039 if (history_expansion_p && instream == stdin
1040 && ISATTY (instream))
1041 {
1042 char *history_value;
1043 int expanded;
1044
1045 *p = '\0'; /* Insert null now. */
1046 expanded = history_expand (linebuffer, &history_value);
1047 if (expanded)
1048 {
1049 /* Print the changes. */
1050 printf_unfiltered ("%s\n", history_value);
1051
1052 /* If there was an error, call this function again. */
1053 if (expanded < 0)
1054 {
1055 xfree (history_value);
1056 return command_line_input (prompt_arg, repeat, annotation_suffix);
1057 }
1058 if (strlen (history_value) > linelength)
1059 {
1060 linelength = strlen (history_value) + 1;
1061 linebuffer = (char *) xrealloc (linebuffer, linelength);
1062 }
1063 strcpy (linebuffer, history_value);
1064 p = linebuffer + strlen (linebuffer);
1065 }
1066 xfree (history_value);
1067 }
1068
1069 /* If we just got an empty line, and that is supposed
1070 to repeat the previous command, return the value in the
1071 global buffer. */
1072 if (repeat && p == linebuffer)
1073 return line;
1074 for (p1 = linebuffer; *p1 == ' ' || *p1 == '\t'; p1++);
1075 if (repeat && !*p1)
1076 return line;
1077
1078 *p = 0;
1079
1080 /* Add line to history if appropriate. */
1081 if (instream == stdin
1082 && ISATTY (stdin) && *linebuffer)
1083 add_history (linebuffer);
1084
1085 /* Note: lines consisting solely of comments are added to the command
1086 history. This is useful when you type a command, and then
1087 realize you don't want to execute it quite yet. You can comment
1088 out the command and then later fetch it from the value history
1089 and remove the '#'. The kill ring is probably better, but some
1090 people are in the habit of commenting things out. */
1091 if (*p1 == '#')
1092 *p1 = '\0'; /* Found a comment. */
1093
1094 /* Save into global buffer if appropriate. */
1095 if (repeat)
1096 {
1097 if (linelength > linesize)
1098 {
1099 line = xrealloc (line, linelength);
1100 linesize = linelength;
1101 }
1102 strcpy (line, linebuffer);
1103 return line;
1104 }
1105
1106 return linebuffer;
1107}
1108\f
1109/* Print the GDB banner. */
1110void
1111print_gdb_version (struct ui_file *stream)
1112{
1113 /* From GNU coding standards, first line is meant to be easy for a
1114 program to parse, and is just canonical program name and version
1115 number, which starts after last space. */
1116
1117 fprintf_filtered (stream, "GNU gdb %s%s\n", PKGVERSION, version);
1118
1119 /* Second line is a copyright notice. */
1120
1121 fprintf_filtered (stream, "Copyright (C) 2009 Free Software Foundation, Inc.\n");
1122
1123 /* Following the copyright is a brief statement that the program is
1124 free software, that users are free to copy and change it on
1125 certain conditions, that it is covered by the GNU GPL, and that
1126 there is no warranty. */
1127
1128 fprintf_filtered (stream, "\
1129License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>\n\
1130This is free software: you are free to change and redistribute it.\n\
1131There is NO WARRANTY, to the extent permitted by law. Type \"show copying\"\n\
1132and \"show warranty\" for details.\n");
1133
1134 /* After the required info we print the configuration information. */
1135
1136 fprintf_filtered (stream, "This GDB was configured as \"");
1137 if (strcmp (host_name, target_name) != 0)
1138 {
1139 fprintf_filtered (stream, "--host=%s --target=%s", host_name, target_name);
1140 }
1141 else
1142 {
1143 fprintf_filtered (stream, "%s", host_name);
1144 }
1145 fprintf_filtered (stream, "\".");
1146
1147 if (REPORT_BUGS_TO[0])
1148 {
1149 fprintf_filtered (stream,
1150 _("\nFor bug reporting instructions, please see:\n"));
1151 fprintf_filtered (stream, "%s.", REPORT_BUGS_TO);
1152 }
1153}
1154\f
1155/* get_prompt: access method for the GDB prompt string. */
1156
1157char *
1158get_prompt (void)
1159{
1160 return PROMPT (0);
1161}
1162
1163void
1164set_prompt (char *s)
1165{
1166/* ??rehrauer: I don't know why this fails, since it looks as though
1167 assignments to prompt are wrapped in calls to xstrdup...
1168 if (prompt != NULL)
1169 xfree (prompt);
1170 */
1171 PROMPT (0) = xstrdup (s);
1172}
1173\f
1174
1175struct qt_args
1176{
1177 char *args;
1178 int from_tty;
1179};
1180
1181/* Callback for iterate_over_inferiors. Kills or detaches the given
1182 inferior, depending on how we originally gained control of it. */
1183
1184static int
1185kill_or_detach (struct inferior *inf, void *args)
1186{
1187 struct qt_args *qt = args;
1188 struct thread_info *thread;
1189
1190 thread = any_thread_of_process (inf->pid);
1191 if (thread != NULL)
1192 {
1193 switch_to_thread (thread->ptid);
1194
1195 /* Leave core files alone. */
1196 if (target_has_execution)
1197 {
1198 if (inf->attach_flag)
1199 target_detach (qt->args, qt->from_tty);
1200 else
1201 target_kill ();
1202 }
1203 }
1204
1205 return 0;
1206}
1207
1208/* Callback for iterate_over_inferiors. Prints info about what GDB
1209 will do to each inferior on a "quit". ARG points to a struct
1210 ui_out where output is to be collected. */
1211
1212static int
1213print_inferior_quit_action (struct inferior *inf, void *arg)
1214{
1215 struct ui_file *stb = arg;
1216
1217 if (inf->attach_flag)
1218 fprintf_filtered (stb,
1219 _("\tInferior %d [%s] will be detached.\n"), inf->num,
1220 target_pid_to_str (pid_to_ptid (inf->pid)));
1221 else
1222 fprintf_filtered (stb,
1223 _("\tInferior %d [%s] will be killed.\n"), inf->num,
1224 target_pid_to_str (pid_to_ptid (inf->pid)));
1225
1226 return 0;
1227}
1228
1229/* If necessary, make the user confirm that we should quit. Return
1230 non-zero if we should quit, zero if we shouldn't. */
1231
1232int
1233quit_confirm (void)
1234{
1235 struct ui_file *stb;
1236 struct cleanup *old_chain;
1237 char *str;
1238 int qr;
1239
1240 /* Don't even ask if we're only debugging a core file inferior. */
1241 if (!have_live_inferiors ())
1242 return 1;
1243
1244 /* Build the query string as a single string. */
1245 stb = mem_fileopen ();
1246 old_chain = make_cleanup_ui_file_delete (stb);
1247
1248 /* This is something of a hack. But there's no reliable way to see
1249 if a GUI is running. The `use_windows' variable doesn't cut
1250 it. */
1251 if (deprecated_init_ui_hook)
1252 fprintf_filtered (stb, _("A debugging session is active.\n"
1253 "Do you still want to close the debugger?"));
1254 else
1255 {
1256 fprintf_filtered (stb, _("A debugging session is active.\n\n"));
1257 iterate_over_inferiors (print_inferior_quit_action, stb);
1258 fprintf_filtered (stb, _("\nQuit anyway? "));
1259 }
1260
1261 str = ui_file_xstrdup (stb, NULL);
1262 make_cleanup (xfree, str);
1263
1264 qr = query ("%s", str);
1265 do_cleanups (old_chain);
1266 return qr;
1267}
1268
1269/* Helper routine for quit_force that requires error handling. */
1270
1271static int
1272quit_target (void *arg)
1273{
1274 struct qt_args *qt = (struct qt_args *)arg;
1275
1276 /* Kill or detach all inferiors. */
1277 iterate_over_inferiors (kill_or_detach, qt);
1278
1279 /* Give all pushed targets a chance to do minimal cleanup, and pop
1280 them all out. */
1281 pop_all_targets (1);
1282
1283 /* Save the history information if it is appropriate to do so. */
1284 if (write_history_p && history_filename)
1285 write_history (history_filename);
1286
1287 do_final_cleanups (ALL_CLEANUPS); /* Do any final cleanups before exiting */
1288
1289 return 0;
1290}
1291
1292/* Quit without asking for confirmation. */
1293
1294void
1295quit_force (char *args, int from_tty)
1296{
1297 int exit_code = 0;
1298 struct qt_args qt;
1299
1300 /* An optional expression may be used to cause gdb to terminate with the
1301 value of that expression. */
1302 if (args)
1303 {
1304 struct value *val = parse_and_eval (args);
1305
1306 exit_code = (int) value_as_long (val);
1307 }
1308 else if (return_child_result)
1309 exit_code = return_child_result_value;
1310
1311 qt.args = args;
1312 qt.from_tty = from_tty;
1313
1314 /* We want to handle any quit errors and exit regardless. */
1315 catch_errors (quit_target, &qt,
1316 "Quitting: ", RETURN_MASK_ALL);
1317
1318 exit (exit_code);
1319}
1320
1321/* If OFF, the debugger will run in non-interactive mode, which means
1322 that it will automatically select the default answer to all the
1323 queries made to the user. If ON, gdb will wait for the user to
1324 answer all queries. If AUTO, gdb will determine whether to run
1325 in interactive mode or not depending on whether stdin is a terminal
1326 or not. */
1327static enum auto_boolean interactive_mode = AUTO_BOOLEAN_AUTO;
1328
1329/* Implement the "show interactive-mode" option. */
1330
1331static void
1332show_interactive_mode (struct ui_file *file, int from_tty,
1333 struct cmd_list_element *c,
1334 const char *value)
1335{
1336 if (interactive_mode == AUTO_BOOLEAN_AUTO)
1337 fprintf_filtered (file, "\
1338Debugger's interactive mode is %s (currently %s).\n",
1339 value, input_from_terminal_p () ? "on" : "off");
1340 else
1341 fprintf_filtered (file, "Debugger's interactive mode is %s.\n", value);
1342}
1343
1344/* Returns whether GDB is running on a terminal and input is
1345 currently coming from that terminal. */
1346
1347int
1348input_from_terminal_p (void)
1349{
1350 if (interactive_mode != AUTO_BOOLEAN_AUTO)
1351 return interactive_mode == AUTO_BOOLEAN_TRUE;
1352
1353 if (gdb_has_a_terminal () && instream == stdin)
1354 return 1;
1355
1356 /* If INSTREAM is unset, and we are not in a user command, we
1357 must be in Insight. That's like having a terminal, for our
1358 purposes. */
1359 if (instream == NULL && !in_user_command)
1360 return 1;
1361
1362 return 0;
1363}
1364\f
1365static void
1366dont_repeat_command (char *ignored, int from_tty)
1367{
1368 *line = 0; /* Can't call dont_repeat here because we're not
1369 necessarily reading from stdin. */
1370}
1371\f
1372/* Functions to manipulate command line editing control variables. */
1373
1374/* Number of commands to print in each call to show_commands. */
1375#define Hist_print 10
1376void
1377show_commands (char *args, int from_tty)
1378{
1379 /* Index for history commands. Relative to history_base. */
1380 int offset;
1381
1382 /* Number of the history entry which we are planning to display next.
1383 Relative to history_base. */
1384 static int num = 0;
1385
1386 /* The first command in the history which doesn't exist (i.e. one more
1387 than the number of the last command). Relative to history_base. */
1388 int hist_len;
1389
1390 /* Print out some of the commands from the command history. */
1391 /* First determine the length of the history list. */
1392 hist_len = history_size;
1393 for (offset = 0; offset < history_size; offset++)
1394 {
1395 if (!history_get (history_base + offset))
1396 {
1397 hist_len = offset;
1398 break;
1399 }
1400 }
1401
1402 if (args)
1403 {
1404 if (args[0] == '+' && args[1] == '\0')
1405 /* "info editing +" should print from the stored position. */
1406 ;
1407 else
1408 /* "info editing <exp>" should print around command number <exp>. */
1409 num = (parse_and_eval_long (args) - history_base) - Hist_print / 2;
1410 }
1411 /* "show commands" means print the last Hist_print commands. */
1412 else
1413 {
1414 num = hist_len - Hist_print;
1415 }
1416
1417 if (num < 0)
1418 num = 0;
1419
1420 /* If there are at least Hist_print commands, we want to display the last
1421 Hist_print rather than, say, the last 6. */
1422 if (hist_len - num < Hist_print)
1423 {
1424 num = hist_len - Hist_print;
1425 if (num < 0)
1426 num = 0;
1427 }
1428
1429 for (offset = num; offset < num + Hist_print && offset < hist_len; offset++)
1430 {
1431 printf_filtered ("%5d %s\n", history_base + offset,
1432 (history_get (history_base + offset))->line);
1433 }
1434
1435 /* The next command we want to display is the next one that we haven't
1436 displayed yet. */
1437 num += Hist_print;
1438
1439 /* If the user repeats this command with return, it should do what
1440 "show commands +" does. This is unnecessary if arg is null,
1441 because "show commands +" is not useful after "show commands". */
1442 if (from_tty && args)
1443 {
1444 args[0] = '+';
1445 args[1] = '\0';
1446 }
1447}
1448
1449/* Called by do_setshow_command. */
1450static void
1451set_history_size_command (char *args, int from_tty, struct cmd_list_element *c)
1452{
1453 if (history_size == INT_MAX)
1454 unstifle_history ();
1455 else if (history_size >= 0)
1456 stifle_history (history_size);
1457 else
1458 {
1459 history_size = INT_MAX;
1460 error (_("History size must be non-negative"));
1461 }
1462}
1463
1464void
1465set_history (char *args, int from_tty)
1466{
1467 printf_unfiltered (_("\"set history\" must be followed by the name of a history subcommand.\n"));
1468 help_list (sethistlist, "set history ", -1, gdb_stdout);
1469}
1470
1471void
1472show_history (char *args, int from_tty)
1473{
1474 cmd_show_list (showhistlist, from_tty, "");
1475}
1476
1477int info_verbose = 0; /* Default verbose msgs off */
1478
1479/* Called by do_setshow_command. An elaborate joke. */
1480void
1481set_verbose (char *args, int from_tty, struct cmd_list_element *c)
1482{
1483 char *cmdname = "verbose";
1484 struct cmd_list_element *showcmd;
1485
1486 showcmd = lookup_cmd_1 (&cmdname, showlist, NULL, 1);
1487
1488 if (info_verbose)
1489 {
1490 c->doc = "Set verbose printing of informational messages.";
1491 showcmd->doc = "Show verbose printing of informational messages.";
1492 }
1493 else
1494 {
1495 c->doc = "Set verbosity.";
1496 showcmd->doc = "Show verbosity.";
1497 }
1498}
1499
1500/* Init the history buffer. Note that we are called after the init file(s)
1501 * have been read so that the user can change the history file via his
1502 * .gdbinit file (for instance). The GDBHISTFILE environment variable
1503 * overrides all of this.
1504 */
1505
1506void
1507init_history (void)
1508{
1509 char *tmpenv;
1510
1511 tmpenv = getenv ("HISTSIZE");
1512 if (tmpenv)
1513 history_size = atoi (tmpenv);
1514 else if (!history_size)
1515 history_size = 256;
1516
1517 stifle_history (history_size);
1518
1519 tmpenv = getenv ("GDBHISTFILE");
1520 if (tmpenv)
1521 history_filename = xstrdup (tmpenv);
1522 else if (!history_filename)
1523 {
1524 /* We include the current directory so that if the user changes
1525 directories the file written will be the same as the one
1526 that was read. */
1527#ifdef __MSDOS__
1528 /* No leading dots in file names are allowed on MSDOS. */
1529 history_filename = concat (current_directory, "/_gdb_history",
1530 (char *)NULL);
1531#else
1532 history_filename = concat (current_directory, "/.gdb_history",
1533 (char *)NULL);
1534#endif
1535 }
1536 read_history (history_filename);
1537}
1538
1539static void
1540show_new_async_prompt (struct ui_file *file, int from_tty,
1541 struct cmd_list_element *c, const char *value)
1542{
1543 fprintf_filtered (file, _("Gdb's prompt is \"%s\".\n"), value);
1544}
1545
1546static void
1547show_async_command_editing_p (struct ui_file *file, int from_tty,
1548 struct cmd_list_element *c, const char *value)
1549{
1550 fprintf_filtered (file, _("\
1551Editing of command lines as they are typed is %s.\n"),
1552 value);
1553}
1554
1555static void
1556show_annotation_level (struct ui_file *file, int from_tty,
1557 struct cmd_list_element *c, const char *value)
1558{
1559 fprintf_filtered (file, _("Annotation_level is %s.\n"), value);
1560}
1561
1562static void
1563show_exec_done_display_p (struct ui_file *file, int from_tty,
1564 struct cmd_list_element *c, const char *value)
1565{
1566 fprintf_filtered (file, _("\
1567Notification of completion for asynchronous execution commands is %s.\n"),
1568 value);
1569}
1570static void
1571init_main (void)
1572{
1573 struct cmd_list_element *c;
1574
1575 /* initialize the prompt stack to a simple "(gdb) " prompt or to
1576 whatever the DEFAULT_PROMPT is. */
1577 the_prompts.top = 0;
1578 PREFIX (0) = "";
1579 PROMPT (0) = xstrdup (DEFAULT_PROMPT);
1580 SUFFIX (0) = "";
1581 /* Set things up for annotation_level > 1, if the user ever decides
1582 to use it. */
1583 async_annotation_suffix = "prompt";
1584 /* Set the variable associated with the setshow prompt command. */
1585 new_async_prompt = xstrdup (PROMPT (0));
1586
1587 /* If gdb was started with --annotate=2, this is equivalent to the
1588 user entering the command 'set annotate 2' at the gdb prompt, so
1589 we need to do extra processing. */
1590 if (annotation_level > 1)
1591 set_async_annotation_level (NULL, 0, NULL);
1592
1593 /* Set the important stuff up for command editing. */
1594 command_editing_p = 1;
1595 history_expansion_p = 0;
1596 write_history_p = 0;
1597
1598 /* Setup important stuff for command line editing. */
1599 rl_completion_word_break_hook = gdb_completion_word_break_characters;
1600 rl_completion_entry_function = readline_line_completion_function;
1601 rl_completer_word_break_characters = default_word_break_characters ();
1602 rl_completer_quote_characters = get_gdb_completer_quote_characters ();
1603 rl_readline_name = "gdb";
1604 rl_terminal_name = getenv ("TERM");
1605
1606 /* The name for this defun comes from Bash, where it originated.
1607 15 is Control-o, the same binding this function has in Bash. */
1608 rl_add_defun ("operate-and-get-next", gdb_rl_operate_and_get_next, 15);
1609
1610 add_setshow_string_cmd ("prompt", class_support,
1611 &new_async_prompt, _("\
1612Set gdb's prompt"), _("\
1613Show gdb's prompt"), NULL,
1614 set_async_prompt,
1615 show_new_async_prompt,
1616 &setlist, &showlist);
1617
1618 add_com ("dont-repeat", class_support, dont_repeat_command, _("\
1619Don't repeat this command.\n\
1620Primarily used inside of user-defined commands that should not be repeated when\n\
1621hitting return."));
1622
1623 add_setshow_boolean_cmd ("editing", class_support,
1624 &async_command_editing_p, _("\
1625Set editing of command lines as they are typed."), _("\
1626Show editing of command lines as they are typed."), _("\
1627Use \"on\" to enable the editing, and \"off\" to disable it.\n\
1628Without an argument, command line editing is enabled. To edit, use\n\
1629EMACS-like or VI-like commands like control-P or ESC."),
1630 set_async_editing_command,
1631 show_async_command_editing_p,
1632 &setlist, &showlist);
1633
1634 add_setshow_boolean_cmd ("save", no_class, &write_history_p, _("\
1635Set saving of the history record on exit."), _("\
1636Show saving of the history record on exit."), _("\
1637Use \"on\" to enable the saving, and \"off\" to disable it.\n\
1638Without an argument, saving is enabled."),
1639 NULL,
1640 show_write_history_p,
1641 &sethistlist, &showhistlist);
1642
1643 add_setshow_integer_cmd ("size", no_class, &history_size, _("\
1644Set the size of the command history,"), _("\
1645Show the size of the command history,"), _("\
1646ie. the number of previous commands to keep a record of."),
1647 set_history_size_command,
1648 show_history_size,
1649 &sethistlist, &showhistlist);
1650
1651 add_setshow_filename_cmd ("filename", no_class, &history_filename, _("\
1652Set the filename in which to record the command history"), _("\
1653Show the filename in which to record the command history"), _("\
1654(the list of previous commands of which a record is kept)."),
1655 NULL,
1656 show_history_filename,
1657 &sethistlist, &showhistlist);
1658
1659 add_setshow_boolean_cmd ("confirm", class_support, &caution, _("\
1660Set whether to confirm potentially dangerous operations."), _("\
1661Show whether to confirm potentially dangerous operations."), NULL,
1662 NULL,
1663 show_caution,
1664 &setlist, &showlist);
1665
1666 add_setshow_zinteger_cmd ("annotate", class_obscure, &annotation_level, _("\
1667Set annotation_level."), _("\
1668Show annotation_level."), _("\
16690 == normal; 1 == fullname (for use when running under emacs)\n\
16702 == output annotated suitably for use by programs that control GDB."),
1671 set_async_annotation_level,
1672 show_annotation_level,
1673 &setlist, &showlist);
1674
1675 add_setshow_boolean_cmd ("exec-done-display", class_support,
1676 &exec_done_display_p, _("\
1677Set notification of completion for asynchronous execution commands."), _("\
1678Show notification of completion for asynchronous execution commands."), _("\
1679Use \"on\" to enable the notification, and \"off\" to disable it."),
1680 NULL,
1681 show_exec_done_display_p,
1682 &setlist, &showlist);
1683
1684 add_setshow_auto_boolean_cmd ("interactive-mode", class_support,
1685 &interactive_mode, _("\
1686Set whether GDB should run in interactive mode or not"), _("\
1687Show whether GDB runs in interactive mode"), _("\
1688If on, run in interactive mode and wait for the user to answer\n\
1689all queries. If off, run in non-interactive mode and automatically\n\
1690assume the default answer to all queries. If auto (the default),\n\
1691determine which mode to use based on the standard input settings"),
1692 NULL,
1693 show_interactive_mode,
1694 &setlist, &showlist);
1695
1696 add_setshow_filename_cmd ("data-directory", class_maintenance,
1697 &gdb_datadir, _("Set GDB's data directory."),
1698 _("Show GDB's data directory."),
1699 _("\
1700When set, GDB uses the specified path to search for data files."),
1701 NULL, NULL,
1702 &setlist,
1703 &showlist);
1704}
1705
1706void
1707gdb_init (char *argv0)
1708{
1709 if (pre_init_ui_hook)
1710 pre_init_ui_hook ();
1711
1712 /* Run the init function of each source file */
1713
1714#ifdef __MSDOS__
1715 /* Make sure we return to the original directory upon exit, come
1716 what may, since the OS doesn't do that for us. */
1717 make_final_cleanup (do_chdir_cleanup, xstrdup (current_directory));
1718#endif
1719
1720 init_cmd_lists (); /* This needs to be done first */
1721 initialize_targets (); /* Setup target_terminal macros for utils.c */
1722 initialize_utils (); /* Make errors and warnings possible */
1723 initialize_all_files ();
1724 initialize_current_architecture ();
1725 init_cli_cmds();
1726 init_main (); /* But that omits this file! Do it now */
1727
1728 initialize_stdin_serial ();
1729
1730 async_init_signals ();
1731
1732 /* We need a default language for parsing expressions, so simple things like
1733 "set width 0" won't fail if no language is explicitly set in a config file
1734 or implicitly set by reading an executable during startup. */
1735 set_language (language_c);
1736 expected_language = current_language; /* don't warn about the change. */
1737
1738 /* Allow another UI to initialize. If the UI fails to initialize,
1739 and it wants GDB to revert to the CLI, it should clear
1740 deprecated_init_ui_hook. */
1741 if (deprecated_init_ui_hook)
1742 deprecated_init_ui_hook (argv0);
1743}