1 /* Top level stuff for GDB, the GNU debugger.
3 Copyright (C) 1986-2014 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
22 #include "cli/cli-cmds.h"
23 #include "cli/cli-script.h"
24 #include "cli/cli-setshow.h"
25 #include "cli/cli-decode.h"
29 #include "exceptions.h"
32 #include "target-dcache.h"
33 #include "breakpoint.h"
35 #include "expression.h"
38 #include "terminal.h" /* For job_control. */
40 #include "completer.h"
46 #include "event-loop.h"
47 #include "gdbthread.h"
48 #include "extension.h"
52 #include "filenames.h"
54 /* readline include files. */
55 #include "readline/readline.h"
56 #include "readline/history.h"
58 /* readline defines this. */
61 #include <sys/types.h>
63 #include "event-top.h"
68 #include "tracepoint.h"
71 extern void initialize_all_files (void);
73 #define PROMPT(X) the_prompts.prompt_stack[the_prompts.top + X].prompt
74 #define PREFIX(X) the_prompts.prompt_stack[the_prompts.top + X].prefix
75 #define SUFFIX(X) the_prompts.prompt_stack[the_prompts.top + X].suffix
77 /* Default command line prompt. This is overriden in some configs. */
79 #ifndef DEFAULT_PROMPT
80 #define DEFAULT_PROMPT "(gdb) "
83 /* Initialization file name for gdb. This is host-dependent. */
85 const char gdbinit[] = GDBINIT;
87 int inhibit_gdbinit = 0;
89 extern char lang_frame_mismatch_warn[]; /* language.c */
91 /* Flag for whether we want to confirm potentially dangerous
92 operations. Default is yes. */
97 show_confirm (struct ui_file *file, int from_tty,
98 struct cmd_list_element *c, const char *value)
100 fprintf_filtered (file, _("Whether to confirm potentially "
101 "dangerous operations is %s.\n"),
105 /* stdio stream that command input is being read from. Set to stdin
106 normally. Set by source_command to the file we are sourcing. Set
107 to NULL if we are executing a user-defined command or interacting
112 /* Flag to indicate whether a user defined command is currently running. */
116 /* Current working directory. */
118 char *current_directory;
120 /* The directory name is actually stored here (usually). */
121 char gdb_dirbuf[1024];
123 /* Function to call before reading a command, if nonzero.
124 The function receives two args: an input stream,
125 and a prompt string. */
127 void (*window_hook) (FILE *, char *);
129 /* Buffer used for reading command lines, and the size
130 allocated for it so far. */
132 char *saved_command_line;
133 int saved_command_line_size = 100;
135 /* Nonzero if the current command is modified by "server ". This
136 affects things like recording into the command history, commands
137 repeating on RETURN, etc. This is so a user interface (emacs, GUI,
138 whatever) can issue its own commands and also send along commands
139 from the user, and have the user not notice that the user interface
140 is issuing commands too. */
143 /* Timeout limit for response from target. */
145 /* The default value has been changed many times over the years. It
146 was originally 5 seconds. But that was thought to be a long time
147 to sit and wait, so it was changed to 2 seconds. That was thought
148 to be plenty unless the connection was going through some terminal
149 server or multiplexer or other form of hairy serial connection.
151 In mid-1996, remote_timeout was moved from remote.c to top.c and
152 it began being used in other remote-* targets. It appears that the
153 default was changed to 20 seconds at that time, perhaps because the
154 Renesas E7000 ICE didn't always respond in a timely manner.
156 But if 5 seconds is a long time to sit and wait for retransmissions,
157 20 seconds is far worse. This demonstrates the difficulty of using
158 a single variable for all protocol timeouts.
160 As remote.c is used much more than remote-e7000.c, it was changed
161 back to 2 seconds in 1999. */
163 int remote_timeout = 2;
165 /* Non-zero tells remote* modules to output debugging info. */
167 int remote_debug = 0;
169 /* Sbrk location on entry to main. Used for statistics only. */
174 /* Hooks for alternate command interfaces. */
176 /* Called after most modules have been initialized, but before taking
179 If the UI fails to initialize and it wants GDB to continue using
180 the default UI, then it should clear this hook before returning. */
182 void (*deprecated_init_ui_hook) (char *argv0);
184 /* This hook is called from within gdb's many mini-event loops which
185 could steal control from a real user interface's event loop. It
186 returns non-zero if the user is requesting a detach, zero
189 int (*deprecated_ui_loop_hook) (int);
192 /* Called from print_frame_info to list the line we stopped in. */
194 void (*deprecated_print_frame_info_listing_hook) (struct symtab * s,
198 /* Replaces most of query. */
200 int (*deprecated_query_hook) (const char *, va_list);
202 /* Replaces most of warning. */
204 void (*deprecated_warning_hook) (const char *, va_list);
206 /* These three functions support getting lines of text from the user.
207 They are used in sequence. First deprecated_readline_begin_hook is
208 called with a text string that might be (for example) a message for
209 the user to type in a sequence of commands to be executed at a
210 breakpoint. If this function calls back to a GUI, it might take
211 this opportunity to pop up a text interaction window with this
212 message. Next, deprecated_readline_hook is called with a prompt
213 that is emitted prior to collecting the user input. It can be
214 called multiple times. Finally, deprecated_readline_end_hook is
215 called to notify the GUI that we are done with the interaction
216 window and it can close it. */
218 void (*deprecated_readline_begin_hook) (char *, ...);
219 char *(*deprecated_readline_hook) (char *);
220 void (*deprecated_readline_end_hook) (void);
222 /* Called as appropriate to notify the interface that we have attached
223 to or detached from an already running process. */
225 void (*deprecated_attach_hook) (void);
226 void (*deprecated_detach_hook) (void);
228 /* Called during long calculations to allow GUI to repair window
229 damage, and to check for stop buttons, etc... */
231 void (*deprecated_interactive_hook) (void);
233 /* Tell the GUI someone changed the register REGNO. -1 means
234 that the caller does not know which register changed or
235 that several registers have changed (see value_assign). */
236 void (*deprecated_register_changed_hook) (int regno);
238 /* Called when going to wait for the target. Usually allows the GUI
239 to run while waiting for target events. */
241 ptid_t (*deprecated_target_wait_hook) (ptid_t ptid,
242 struct target_waitstatus *status,
245 /* Used by UI as a wrapper around command execution. May do various
246 things like enabling/disabling buttons, etc... */
248 void (*deprecated_call_command_hook) (struct cmd_list_element * c,
249 char *cmd, int from_tty);
251 /* Called when the current thread changes. Argument is thread id. */
253 void (*deprecated_context_hook) (int id);
255 /* Handler for SIGHUP. */
258 /* NOTE 1999-04-29: This function will be static again, once we modify
259 gdb to use the event loop as the default command loop and we merge
260 event-top.c into this file, top.c. */
264 /* Stop asking user for confirmation --- we're exiting. This
265 prevents asking the user dumb questions. */
267 quit_command ((char *) 0, 0);
269 #endif /* defined SIGHUP */
271 /* Line number we are currently in, in a file which is being sourced. */
272 /* NOTE 1999-04-29: This variable will be static again, once we modify
273 gdb to use the event loop as the default command loop and we merge
274 event-top.c into this file, top.c. */
275 /* static */ int source_line_number;
277 /* Name of the file we are sourcing. */
278 /* NOTE 1999-04-29: This variable will be static again, once we modify
279 gdb to use the event loop as the default command loop and we merge
280 event-top.c into this file, top.c. */
281 /* static */ const char *source_file_name;
283 /* Clean up on error during a "source" command (or execution of a
284 user-defined command). */
287 do_restore_instream_cleanup (void *stream)
289 /* Restore the previous input stream. */
293 /* Read commands from STREAM. */
295 read_command_file (FILE *stream)
297 struct cleanup *cleanups;
299 cleanups = make_cleanup (do_restore_instream_cleanup, instream);
302 do_cleanups (cleanups);
305 void (*pre_init_ui_hook) (void);
309 do_chdir_cleanup (void *old_dir)
317 prepare_execute_command (void)
320 struct cleanup *cleanup;
322 mark = value_mark ();
323 cleanup = make_cleanup_value_free_to_mark (mark);
325 /* With multiple threads running while the one we're examining is
326 stopped, the dcache can get stale without us being able to detect
327 it. For the duration of the command, though, use the dcache to
328 help things like backtrace. */
330 target_dcache_invalidate ();
335 /* Tell the user if the language has changed (except first time) after
336 executing a command. */
339 check_frame_language_change (void)
341 static int warned = 0;
343 /* First make sure that a new frame has been selected, in case the
344 command or the hooks changed the program state. */
345 deprecated_safe_get_selected_frame ();
346 if (current_language != expected_language)
348 if (language_mode == language_mode_auto && info_verbose)
350 language_info (1); /* Print what changed. */
355 /* Warn the user if the working language does not match the language
356 of the current frame. Only warn the user if we are actually
357 running the program, i.e. there is a stack. */
358 /* FIXME: This should be cacheing the frame and only running when
359 the frame changes. */
361 if (has_stack_frames ())
365 flang = get_frame_language ();
367 && flang != language_unknown
368 && flang != current_language->la_language)
370 printf_filtered ("%s\n", lang_frame_mismatch_warn);
379 maybe_wait_sync_command_done (int was_sync)
381 /* If the interpreter is in sync mode (we're running a user
382 command's list, running command hooks or similars), and we
383 just ran a synchronous command that started the target, wait
384 for that command to end. */
385 if (!interpreter_async && !was_sync && sync_execution)
387 while (gdb_do_one_event () >= 0)
393 /* Execute the line P as a command, in the current user context.
394 Pass FROM_TTY as second argument to the defining function. */
397 execute_command (char *p, int from_tty)
399 struct cleanup *cleanup_if_error, *cleanup;
400 struct cmd_list_element *c;
403 cleanup_if_error = make_bpstat_clear_actions_cleanup ();
404 cleanup = prepare_execute_command ();
406 /* Force cleanup of any alloca areas if using C alloca instead of
410 /* This can happen when command_line_input hits end of file. */
413 do_cleanups (cleanup);
414 discard_cleanups (cleanup_if_error);
418 target_log_command (p);
420 while (*p == ' ' || *p == '\t')
426 int was_sync = sync_execution;
430 /* If trace-commands is set then this will print this command. */
431 print_command_trace (p);
433 c = lookup_cmd (&cmd, cmdlist, "", 0, 1);
436 /* Pass null arg rather than an empty one. */
439 /* FIXME: cagney/2002-02-02: The c->type test is pretty dodgy
440 while the is_complete_command(cfunc) test is just plain
441 bogus. They should both be replaced by a test of the form
442 c->strip_trailing_white_space_p. */
443 /* NOTE: cagney/2002-02-02: The function.cfunc in the below
444 can't be replaced with func. This is because it is the
445 cfunc, and not the func, that has the value that the
446 is_complete_command hack is testing for. */
447 /* Clear off trailing whitespace, except for set and complete
450 && c->type != set_cmd
451 && !is_complete_command (c))
453 p = arg + strlen (arg) - 1;
454 while (p >= arg && (*p == ' ' || *p == '\t'))
459 /* If this command has been pre-hooked, run the hook first. */
460 execute_cmd_pre_hook (c);
462 if (c->deprecated_warn_user)
463 deprecated_cmd_warning (line);
465 /* c->user_commands would be NULL in the case of a python command. */
466 if (c->class == class_user && c->user_commands)
467 execute_user_command (c, arg);
468 else if (c->type == set_cmd)
469 do_set_command (arg, from_tty, c);
470 else if (c->type == show_cmd)
471 do_show_command (arg, from_tty, c);
472 else if (!cmd_func_p (c))
473 error (_("That is not a command, just a help topic."));
474 else if (deprecated_call_command_hook)
475 deprecated_call_command_hook (c, arg, from_tty);
477 cmd_func (c, arg, from_tty);
479 maybe_wait_sync_command_done (was_sync);
481 /* If this command has been post-hooked, run the hook last. */
482 execute_cmd_post_hook (c);
486 check_frame_language_change ();
488 do_cleanups (cleanup);
489 discard_cleanups (cleanup_if_error);
492 /* Run execute_command for P and FROM_TTY. Capture its output into the
493 returned string, do not display it to the screen. BATCH_FLAG will be
494 temporarily set to true. */
497 execute_command_to_string (char *p, int from_tty)
499 struct ui_file *str_file;
500 struct cleanup *cleanup;
503 /* GDB_STDOUT should be better already restored during these
504 restoration callbacks. */
505 cleanup = set_batch_flag_and_make_cleanup_restore_page_info ();
507 make_cleanup_restore_integer (&interpreter_async);
508 interpreter_async = 0;
510 str_file = mem_fileopen ();
512 make_cleanup_ui_file_delete (str_file);
513 make_cleanup_restore_ui_file (&gdb_stdout);
514 make_cleanup_restore_ui_file (&gdb_stderr);
515 make_cleanup_restore_ui_file (&gdb_stdlog);
516 make_cleanup_restore_ui_file (&gdb_stdtarg);
517 make_cleanup_restore_ui_file (&gdb_stdtargerr);
519 if (ui_out_redirect (current_uiout, str_file) < 0)
520 warning (_("Current output protocol does not support redirection"));
522 make_cleanup_ui_out_redirect_pop (current_uiout);
524 gdb_stdout = str_file;
525 gdb_stderr = str_file;
526 gdb_stdlog = str_file;
527 gdb_stdtarg = str_file;
528 gdb_stdtargerr = str_file;
530 execute_command (p, from_tty);
532 retval = ui_file_xstrdup (str_file, NULL);
534 do_cleanups (cleanup);
539 /* Read commands from `instream' and execute them
540 until end of file or error reading instream. */
545 struct cleanup *old_chain;
547 int stdin_is_tty = ISATTY (stdin);
549 while (instream && !feof (instream))
551 if (window_hook && instream == stdin)
552 (*window_hook) (instream, get_prompt ());
555 if (instream == stdin && stdin_is_tty)
556 reinitialize_more_filter ();
557 old_chain = make_cleanup (null_cleanup, 0);
559 /* Get a command-line. This calls the readline package. */
560 command = command_line_input (instream == stdin ?
561 get_prompt () : (char *) NULL,
562 instream == stdin, "prompt");
565 do_cleanups (old_chain);
569 make_command_stats_cleanup (1);
571 /* Do not execute commented lines. */
572 if (command[0] != '#')
574 execute_command (command, instream == stdin);
576 /* Do any commands attached to breakpoint we are stopped at. */
577 bpstat_do_actions ();
579 do_cleanups (old_chain);
583 /* When nonzero, cause dont_repeat to do nothing. This should only be
584 set via prevent_dont_repeat. */
586 static int suppress_dont_repeat = 0;
588 /* Commands call this if they do not want to be repeated by null lines. */
593 if (suppress_dont_repeat || server_command)
596 /* If we aren't reading from standard input, we are saving the last
597 thing read from stdin in line and don't want to delete it. Null
598 lines won't repeat here in any case. */
599 if (instream == stdin)
600 *saved_command_line = 0;
603 /* Prevent dont_repeat from working, and return a cleanup that
604 restores the previous state. */
607 prevent_dont_repeat (void)
609 struct cleanup *result = make_cleanup_restore_integer (&suppress_dont_repeat);
611 suppress_dont_repeat = 1;
616 /* Read a line from the stream "instream" without command line editing.
618 It prints PROMPT_ARG once at the start.
619 Action is compatible with "readline", e.g. space for the result is
620 malloc'd and should be freed by the caller.
622 A NULL return means end of file. */
624 gdb_readline (char *prompt_arg)
629 int result_size = 80;
633 /* Don't use a _filtered function here. It causes the assumed
634 character position to be off, since the newline we read from
635 the user is not accounted for. */
636 fputs_unfiltered (prompt_arg, gdb_stdout);
637 gdb_flush (gdb_stdout);
640 result = (char *) xmalloc (result_size);
644 /* Read from stdin if we are executing a user defined command.
645 This is the right thing for prompt_for_continue, at least. */
646 c = fgetc (instream ? instream : stdin);
651 /* The last line does not end with a newline. Return it, and
652 if we are called again fgetc will still return EOF and
653 we'll return NULL then. */
661 if (input_index > 0 && result[input_index - 1] == '\r')
666 result[input_index++] = c;
667 while (input_index >= result_size)
670 result = (char *) xrealloc (result, result_size);
674 result[input_index++] = '\0';
678 /* Variables which control command line editing and history
679 substitution. These variables are given default values at the end
681 static int command_editing_p;
683 /* NOTE 1999-04-29: This variable will be static again, once we modify
684 gdb to use the event loop as the default command loop and we merge
685 event-top.c into this file, top.c. */
687 /* static */ int history_expansion_p;
689 static int write_history_p;
691 show_write_history_p (struct ui_file *file, int from_tty,
692 struct cmd_list_element *c, const char *value)
694 fprintf_filtered (file, _("Saving of the history record on exit is %s.\n"),
698 /* The variable associated with the "set/show history size"
700 static unsigned int history_size_setshow_var;
703 show_history_size (struct ui_file *file, int from_tty,
704 struct cmd_list_element *c, const char *value)
706 fprintf_filtered (file, _("The size of the command history is %s.\n"),
710 static char *history_filename;
712 show_history_filename (struct ui_file *file, int from_tty,
713 struct cmd_list_element *c, const char *value)
715 fprintf_filtered (file, _("The filename in which to record "
716 "the command history is \"%s\".\n"),
720 /* This is like readline(), but it has some gdb-specific behavior.
721 gdb may want readline in both the synchronous and async modes during
722 a single gdb invocation. At the ordinary top-level prompt we might
723 be using the async readline. That means we can't use
724 rl_pre_input_hook, since it doesn't work properly in async mode.
725 However, for a secondary prompt (" >", such as occurs during a
726 `define'), gdb wants a synchronous response.
728 We used to call readline() directly, running it in synchronous
729 mode. But mixing modes this way is not supported, and as of
730 readline 5.x it no longer works; the arrow keys come unbound during
731 the synchronous call. So we make a nested call into the event
732 loop. That's what gdb_readline_wrapper is for. */
734 /* A flag set as soon as gdb_readline_wrapper_line is called; we can't
735 rely on gdb_readline_wrapper_result, which might still be NULL if
736 the user types Control-D for EOF. */
737 static int gdb_readline_wrapper_done;
739 /* The result of the current call to gdb_readline_wrapper, once a newline
741 static char *gdb_readline_wrapper_result;
743 /* Any intercepted hook. Operate-and-get-next sets this, expecting it
744 to be called after the newline is processed (which will redisplay
745 the prompt). But in gdb_readline_wrapper we will not get a new
746 prompt until the next call, or until we return to the event loop.
747 So we disable this hook around the newline and restore it before we
749 static void (*saved_after_char_processing_hook) (void);
751 /* This function is called when readline has seen a complete line of
755 gdb_readline_wrapper_line (char *line)
757 gdb_assert (!gdb_readline_wrapper_done);
758 gdb_readline_wrapper_result = line;
759 gdb_readline_wrapper_done = 1;
761 /* Prevent operate-and-get-next from acting too early. */
762 saved_after_char_processing_hook = after_char_processing_hook;
763 after_char_processing_hook = NULL;
765 /* Prevent parts of the prompt from being redisplayed if annotations
766 are enabled, and readline's state getting out of sync. We'll
767 restore it in gdb_readline_wrapper_cleanup. */
768 if (async_command_editing_p)
769 rl_callback_handler_remove ();
772 struct gdb_readline_wrapper_cleanup
774 void (*handler_orig) (char *);
775 int already_prompted_orig;
777 /* Whether the target was async. */
778 int target_is_async_orig;
782 gdb_readline_wrapper_cleanup (void *arg)
784 struct gdb_readline_wrapper_cleanup *cleanup = arg;
786 rl_already_prompted = cleanup->already_prompted_orig;
788 gdb_assert (input_handler == gdb_readline_wrapper_line);
789 input_handler = cleanup->handler_orig;
791 /* Reinstall INPUT_HANDLER in readline, without displaying a
793 if (async_command_editing_p)
794 rl_callback_handler_install (NULL, input_handler);
796 gdb_readline_wrapper_result = NULL;
797 gdb_readline_wrapper_done = 0;
799 after_char_processing_hook = saved_after_char_processing_hook;
800 saved_after_char_processing_hook = NULL;
802 if (cleanup->target_is_async_orig)
803 target_async (inferior_event_handler, 0);
809 gdb_readline_wrapper (char *prompt)
811 struct cleanup *back_to;
812 struct gdb_readline_wrapper_cleanup *cleanup;
815 cleanup = xmalloc (sizeof (*cleanup));
816 cleanup->handler_orig = input_handler;
817 input_handler = gdb_readline_wrapper_line;
819 cleanup->already_prompted_orig = rl_already_prompted;
821 cleanup->target_is_async_orig = target_is_async_p ();
823 back_to = make_cleanup (gdb_readline_wrapper_cleanup, cleanup);
825 if (cleanup->target_is_async_orig)
826 target_async (NULL, NULL);
828 /* Display our prompt and prevent double prompt display. */
829 display_gdb_prompt (prompt);
830 rl_already_prompted = 1;
832 if (after_char_processing_hook)
833 (*after_char_processing_hook) ();
834 gdb_assert (after_char_processing_hook == NULL);
836 while (gdb_do_one_event () >= 0)
837 if (gdb_readline_wrapper_done)
840 retval = gdb_readline_wrapper_result;
841 do_cleanups (back_to);
846 /* The current saved history number from operate-and-get-next.
847 This is -1 if not valid. */
848 static int operate_saved_history = -1;
850 /* This is put on the appropriate hook and helps operate-and-get-next
853 gdb_rl_operate_and_get_next_completion (void)
855 int delta = where_history () - operate_saved_history;
857 /* The `key' argument to rl_get_previous_history is ignored. */
858 rl_get_previous_history (delta, 0);
859 operate_saved_history = -1;
861 /* readline doesn't automatically update the display for us. */
864 after_char_processing_hook = NULL;
865 rl_pre_input_hook = NULL;
868 /* This is a gdb-local readline command handler. It accepts the
869 current command line (like RET does) and, if this command was taken
870 from the history, arranges for the next command in the history to
871 appear on the command line when the prompt returns.
872 We ignore the arguments. */
874 gdb_rl_operate_and_get_next (int count, int key)
878 /* Use the async hook. */
879 after_char_processing_hook = gdb_rl_operate_and_get_next_completion;
881 /* Find the current line, and find the next line to use. */
882 where = where_history();
884 if ((history_is_stifled () && (history_length >= history_max_entries))
885 || (where >= history_length - 1))
886 operate_saved_history = where;
888 operate_saved_history = where + 1;
890 return rl_newline (1, key);
893 /* Read one line from the command input stream `instream'
894 into the local static buffer `linebuffer' (whose current length
896 The buffer is made bigger as necessary.
897 Returns the address of the start of the line.
899 NULL is returned for end of file.
901 *If* the instream == stdin & stdin is a terminal, the line read
902 is copied into the file line saver (global var char *line,
903 length linesize) so that it can be duplicated.
905 This routine either uses fancy command line editing or
906 simple input as the user has requested. */
909 command_line_input (char *prompt_arg, int repeat, char *annotation_suffix)
911 static char *linebuffer = 0;
912 static unsigned linelength = 0;
916 char *local_prompt = prompt_arg;
920 /* The annotation suffix must be non-NULL. */
921 if (annotation_suffix == NULL)
922 annotation_suffix = "";
924 if (annotation_level > 1 && instream == stdin)
926 local_prompt = alloca ((prompt_arg == NULL ? 0 : strlen (prompt_arg))
927 + strlen (annotation_suffix) + 40);
928 if (prompt_arg == NULL)
929 local_prompt[0] = '\0';
931 strcpy (local_prompt, prompt_arg);
932 strcat (local_prompt, "\n\032\032");
933 strcat (local_prompt, annotation_suffix);
934 strcat (local_prompt, "\n");
940 linebuffer = (char *) xmalloc (linelength);
945 /* Control-C quits instantly if typed while in this loop
946 since it should not wait until the user types a newline. */
951 signal (STOP_SIGNAL, handle_stop_sig);
956 /* Make sure that all output has been output. Some machines may
957 let you get away with leaving out some of the gdb_flush, but
960 gdb_flush (gdb_stdout);
961 gdb_flush (gdb_stderr);
963 if (source_file_name != NULL)
964 ++source_line_number;
966 if (annotation_level > 1 && instream == stdin)
968 puts_unfiltered ("\n\032\032pre-");
969 puts_unfiltered (annotation_suffix);
970 puts_unfiltered ("\n");
973 /* Don't use fancy stuff if not talking to stdin. */
974 if (deprecated_readline_hook && input_from_terminal_p ())
976 rl = (*deprecated_readline_hook) (local_prompt);
978 else if (command_editing_p && input_from_terminal_p ())
980 rl = gdb_readline_wrapper (local_prompt);
984 rl = gdb_readline (local_prompt);
987 if (annotation_level > 1 && instream == stdin)
989 puts_unfiltered ("\n\032\032post-");
990 puts_unfiltered (annotation_suffix);
991 puts_unfiltered ("\n");
994 if (!rl || rl == (char *) EOF)
999 if (strlen (rl) + 1 + (p - linebuffer) > linelength)
1001 linelength = strlen (rl) + 1 + (p - linebuffer);
1002 nline = (char *) xrealloc (linebuffer, linelength);
1003 p += nline - linebuffer;
1007 /* Copy line. Don't copy null at end. (Leaves line alone
1008 if this was just a newline). */
1012 xfree (rl); /* Allocated in readline. */
1014 if (p == linebuffer || *(p - 1) != '\\')
1017 p--; /* Put on top of '\'. */
1018 local_prompt = (char *) 0;
1023 signal (STOP_SIGNAL, SIG_DFL);
1030 #define SERVER_COMMAND_LENGTH 7
1032 (p - linebuffer > SERVER_COMMAND_LENGTH)
1033 && strncmp (linebuffer, "server ", SERVER_COMMAND_LENGTH) == 0;
1036 /* Note that we don't set `line'. Between this and the check in
1037 dont_repeat, this insures that repeating will still do the
1040 return linebuffer + SERVER_COMMAND_LENGTH;
1043 /* Do history expansion if that is wished. */
1044 if (history_expansion_p && instream == stdin
1045 && ISATTY (instream))
1047 char *history_value;
1050 *p = '\0'; /* Insert null now. */
1051 expanded = history_expand (linebuffer, &history_value);
1054 /* Print the changes. */
1055 printf_unfiltered ("%s\n", history_value);
1057 /* If there was an error, call this function again. */
1060 xfree (history_value);
1061 return command_line_input (prompt_arg, repeat,
1064 if (strlen (history_value) > linelength)
1066 linelength = strlen (history_value) + 1;
1067 linebuffer = (char *) xrealloc (linebuffer, linelength);
1069 strcpy (linebuffer, history_value);
1070 p = linebuffer + strlen (linebuffer);
1072 xfree (history_value);
1075 /* If we just got an empty line, and that is supposed to repeat the
1076 previous command, return the value in the global buffer. */
1077 if (repeat && p == linebuffer)
1078 return saved_command_line;
1079 for (p1 = linebuffer; *p1 == ' ' || *p1 == '\t'; p1++);
1081 return saved_command_line;
1085 /* Add line to history if appropriate. */
1086 if (*linebuffer && input_from_terminal_p ())
1087 add_history (linebuffer);
1089 /* Save into global buffer if appropriate. */
1092 if (linelength > saved_command_line_size)
1094 saved_command_line = xrealloc (saved_command_line, linelength);
1095 saved_command_line_size = linelength;
1097 strcpy (saved_command_line, linebuffer);
1098 return saved_command_line;
1104 /* Print the GDB banner. */
1106 print_gdb_version (struct ui_file *stream)
1108 /* From GNU coding standards, first line is meant to be easy for a
1109 program to parse, and is just canonical program name and version
1110 number, which starts after last space. */
1112 fprintf_filtered (stream, "GNU gdb %s%s\n", PKGVERSION, version);
1114 /* Second line is a copyright notice. */
1116 fprintf_filtered (stream,
1117 "Copyright (C) 2014 Free Software Foundation, Inc.\n");
1119 /* Following the copyright is a brief statement that the program is
1120 free software, that users are free to copy and change it on
1121 certain conditions, that it is covered by the GNU GPL, and that
1122 there is no warranty. */
1124 fprintf_filtered (stream, "\
1125 License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>\
1126 \nThis is free software: you are free to change and redistribute it.\n\
1127 There is NO WARRANTY, to the extent permitted by law. Type \"show copying\"\n\
1128 and \"show warranty\" for details.\n");
1130 /* After the required info we print the configuration information. */
1132 fprintf_filtered (stream, "This GDB was configured as \"");
1133 if (strcmp (host_name, target_name) != 0)
1135 fprintf_filtered (stream, "--host=%s --target=%s",
1136 host_name, target_name);
1140 fprintf_filtered (stream, "%s", host_name);
1142 fprintf_filtered (stream, "\".\n\
1143 Type \"show configuration\" for configuration details.");
1145 if (REPORT_BUGS_TO[0])
1147 fprintf_filtered (stream,
1148 _("\nFor bug reporting instructions, please see:\n"));
1149 fprintf_filtered (stream, "%s.\n", REPORT_BUGS_TO);
1151 fprintf_filtered (stream,
1152 _("Find the GDB manual and other documentation \
1153 resources online at:\n<http://www.gnu.org/software/gdb/documentation/>.\n"));
1154 fprintf_filtered (stream, _("For help, type \"help\".\n"));
1155 fprintf_filtered (stream, _("Type \"apropos word\" to search for \
1156 commands related to \"word\"."));
1159 /* Print the details of GDB build-time configuration. */
1161 print_gdb_configuration (struct ui_file *stream)
1163 fprintf_filtered (stream, _("\
1164 This GDB was configured as follows:\n\
1165 configure --host=%s --target=%s\n\
1166 "), host_name, target_name);
1167 fprintf_filtered (stream, _("\
1168 --with-auto-load-dir=%s\n\
1169 --with-auto-load-safe-path=%s\n\
1170 "), AUTO_LOAD_DIR, AUTO_LOAD_SAFE_PATH);
1172 fprintf_filtered (stream, _("\
1176 fprintf_filtered (stream, _("\
1181 fprintf_filtered (stream, _("\
1182 --with-gdb-datadir=%s%s\n\
1183 "), GDB_DATADIR, GDB_DATADIR_RELOCATABLE ? " (relocatable)" : "");
1185 fprintf_filtered (stream, _("\
1186 --with-iconv-bin=%s%s\n\
1187 "), ICONV_BIN, ICONV_BIN_RELOCATABLE ? " (relocatable)" : "");
1189 if (JIT_READER_DIR[0])
1190 fprintf_filtered (stream, _("\
1191 --with-jit-reader-dir=%s%s\n\
1192 "), JIT_READER_DIR, JIT_READER_DIR_RELOCATABLE ? " (relocatable)" : "");
1193 #if HAVE_LIBUNWIND_IA64_H
1194 fprintf_filtered (stream, _("\
1195 --with-libunwind-ia64\n\
1198 fprintf_filtered (stream, _("\
1199 --without-libunwind-ia64\n\
1203 fprintf_filtered (stream, _("\
1207 fprintf_filtered (stream, _("\
1211 #ifdef WITH_PYTHON_PATH
1212 fprintf_filtered (stream, _("\
1213 --with-python=%s%s\n\
1214 "), WITH_PYTHON_PATH, PYTHON_PATH_RELOCATABLE ? " (relocatable)" : "");
1217 fprintf_filtered (stream, _("\
1221 fprintf_filtered (stream, _("\
1226 fprintf_filtered (stream, _("\
1227 --with-relocated-sources=%s\n\
1231 fprintf_filtered (stream, _("\
1232 --with-separate-debug-dir=%s%s\n\
1233 "), DEBUGDIR, DEBUGDIR_RELOCATABLE ? " (relocatable)" : "");
1234 if (TARGET_SYSTEM_ROOT[0])
1235 fprintf_filtered (stream, _("\
1236 --with-sysroot=%s%s\n\
1237 "), TARGET_SYSTEM_ROOT, TARGET_SYSTEM_ROOT_RELOCATABLE ? " (relocatable)" : "");
1238 if (SYSTEM_GDBINIT[0])
1239 fprintf_filtered (stream, _("\
1240 --with-system-gdbinit=%s%s\n\
1241 "), SYSTEM_GDBINIT, SYSTEM_GDBINIT_RELOCATABLE ? " (relocatable)" : "");
1243 fprintf_filtered (stream, _("\
1247 fprintf_filtered (stream, _("\
1251 #if HAVE_LIBBABELTRACE
1252 fprintf_filtered (stream, _("\
1253 --with-babeltrace\n\
1256 fprintf_filtered (stream, _("\
1257 --without-babeltrace\n\
1260 /* We assume "relocatable" will be printed at least once, thus we always
1261 print this text. It's a reasonably safe assumption for now. */
1262 fprintf_filtered (stream, _("\n\
1263 (\"Relocatable\" means the directory can be moved with the GDB installation\n\
1264 tree, and GDB will still find it.)\n\
1269 /* The current top level prompt, settable with "set prompt", and/or
1270 with the python `gdb.prompt_hook' hook. */
1271 static char *top_prompt;
1273 /* Access method for the GDB prompt string. */
1281 /* Set method for the GDB prompt string. */
1284 set_prompt (const char *s)
1286 char *p = xstrdup (s);
1299 /* Callback for iterate_over_inferiors. Kills or detaches the given
1300 inferior, depending on how we originally gained control of it. */
1303 kill_or_detach (struct inferior *inf, void *args)
1305 struct qt_args *qt = args;
1306 struct thread_info *thread;
1311 thread = any_thread_of_process (inf->pid);
1314 switch_to_thread (thread->ptid);
1316 /* Leave core files alone. */
1317 if (target_has_execution)
1319 if (inf->attach_flag)
1320 target_detach (qt->args, qt->from_tty);
1329 /* Callback for iterate_over_inferiors. Prints info about what GDB
1330 will do to each inferior on a "quit". ARG points to a struct
1331 ui_out where output is to be collected. */
1334 print_inferior_quit_action (struct inferior *inf, void *arg)
1336 struct ui_file *stb = arg;
1341 if (inf->attach_flag)
1342 fprintf_filtered (stb,
1343 _("\tInferior %d [%s] will be detached.\n"), inf->num,
1344 target_pid_to_str (pid_to_ptid (inf->pid)));
1346 fprintf_filtered (stb,
1347 _("\tInferior %d [%s] will be killed.\n"), inf->num,
1348 target_pid_to_str (pid_to_ptid (inf->pid)));
1353 /* If necessary, make the user confirm that we should quit. Return
1354 non-zero if we should quit, zero if we shouldn't. */
1359 struct ui_file *stb;
1360 struct cleanup *old_chain;
1364 /* Don't even ask if we're only debugging a core file inferior. */
1365 if (!have_live_inferiors ())
1368 /* Build the query string as a single string. */
1369 stb = mem_fileopen ();
1370 old_chain = make_cleanup_ui_file_delete (stb);
1372 fprintf_filtered (stb, _("A debugging session is active.\n\n"));
1373 iterate_over_inferiors (print_inferior_quit_action, stb);
1374 fprintf_filtered (stb, _("\nQuit anyway? "));
1376 str = ui_file_xstrdup (stb, NULL);
1377 make_cleanup (xfree, str);
1379 qr = query ("%s", str);
1380 do_cleanups (old_chain);
1384 /* Quit without asking for confirmation. */
1387 quit_force (char *args, int from_tty)
1391 volatile struct gdb_exception ex;
1393 /* An optional expression may be used to cause gdb to terminate with the
1394 value of that expression. */
1397 struct value *val = parse_and_eval (args);
1399 exit_code = (int) value_as_long (val);
1401 else if (return_child_result)
1402 exit_code = return_child_result_value;
1405 qt.from_tty = from_tty;
1407 /* Wrappers to make the code below a bit more readable. */
1409 TRY_CATCH (ex, RETURN_MASK_ALL)
1411 #define DO_PRINT_EX \
1412 if (ex.reason < 0) \
1413 exception_print (gdb_stderr, ex)
1415 /* We want to handle any quit errors and exit regardless. */
1417 /* Get out of tfind mode, and kill or detach all inferiors. */
1420 disconnect_tracing ();
1421 iterate_over_inferiors (kill_or_detach, &qt);
1425 /* Give all pushed targets a chance to do minimal cleanup, and pop
1433 /* Save the history information if it is appropriate to do so. */
1436 if (write_history_p && history_filename
1437 && input_from_terminal_p ())
1438 write_history (history_filename);
1442 /* Do any final cleanups before exiting. */
1445 do_final_cleanups (all_cleanups ());
1452 /* Returns whether GDB is running on a terminal and input is
1453 currently coming from that terminal. */
1456 input_from_terminal_p (void)
1461 if (gdb_has_a_terminal () && instream == stdin)
1464 /* If INSTREAM is unset, and we are not in a user command, we
1465 must be in Insight. That's like having a terminal, for our
1467 if (instream == NULL && !in_user_command)
1474 dont_repeat_command (char *ignored, int from_tty)
1476 /* Can't call dont_repeat here because we're not necessarily reading
1478 *saved_command_line = 0;
1481 /* Functions to manipulate command line editing control variables. */
1483 /* Number of commands to print in each call to show_commands. */
1484 #define Hist_print 10
1486 show_commands (char *args, int from_tty)
1488 /* Index for history commands. Relative to history_base. */
1491 /* Number of the history entry which we are planning to display next.
1492 Relative to history_base. */
1495 /* Print out some of the commands from the command history. */
1499 if (args[0] == '+' && args[1] == '\0')
1500 /* "info editing +" should print from the stored position. */
1503 /* "info editing <exp>" should print around command number <exp>. */
1504 num = (parse_and_eval_long (args) - history_base) - Hist_print / 2;
1506 /* "show commands" means print the last Hist_print commands. */
1509 num = history_length - Hist_print;
1515 /* If there are at least Hist_print commands, we want to display the last
1516 Hist_print rather than, say, the last 6. */
1517 if (history_length - num < Hist_print)
1519 num = history_length - Hist_print;
1525 offset < num + Hist_print && offset < history_length;
1528 printf_filtered ("%5d %s\n", history_base + offset,
1529 (history_get (history_base + offset))->line);
1532 /* The next command we want to display is the next one that we haven't
1536 /* If the user repeats this command with return, it should do what
1537 "show commands +" does. This is unnecessary if arg is null,
1538 because "show commands +" is not useful after "show commands". */
1539 if (from_tty && args)
1546 /* Called by do_setshow_command. */
1548 set_history_size_command (char *args, int from_tty, struct cmd_list_element *c)
1550 /* Readline's history interface works with 'int', so it can only
1551 handle history sizes up to INT_MAX. The command itself is
1552 uinteger, so UINT_MAX means "unlimited", but we only get that if
1553 the user does "set history size 0" -- "set history size <UINT_MAX>"
1554 throws out-of-range. */
1555 if (history_size_setshow_var > INT_MAX
1556 && history_size_setshow_var != UINT_MAX)
1558 unsigned int new_value = history_size_setshow_var;
1560 /* Restore previous value before throwing. */
1561 if (history_is_stifled ())
1562 history_size_setshow_var = history_max_entries;
1564 history_size_setshow_var = UINT_MAX;
1566 error (_("integer %u out of range"), new_value);
1569 /* Commit the new value to readline's history. */
1570 if (history_size_setshow_var == UINT_MAX)
1571 unstifle_history ();
1573 stifle_history (history_size_setshow_var);
1577 set_history (char *args, int from_tty)
1579 printf_unfiltered (_("\"set history\" must be followed "
1580 "by the name of a history subcommand.\n"));
1581 help_list (sethistlist, "set history ", all_commands, gdb_stdout);
1585 show_history (char *args, int from_tty)
1587 cmd_show_list (showhistlist, from_tty, "");
1590 int info_verbose = 0; /* Default verbose msgs off. */
1592 /* Called by do_setshow_command. An elaborate joke. */
1594 set_verbose (char *args, int from_tty, struct cmd_list_element *c)
1596 const char *cmdname = "verbose";
1597 struct cmd_list_element *showcmd;
1599 showcmd = lookup_cmd_1 (&cmdname, showlist, NULL, 1);
1600 gdb_assert (showcmd != NULL && showcmd != CMD_LIST_AMBIGUOUS);
1604 c->doc = "Set verbose printing of informational messages.";
1605 showcmd->doc = "Show verbose printing of informational messages.";
1609 c->doc = "Set verbosity.";
1610 showcmd->doc = "Show verbosity.";
1614 /* Init the history buffer. Note that we are called after the init file(s)
1615 have been read so that the user can change the history file via his
1616 .gdbinit file (for instance). The GDBHISTFILE environment variable
1617 overrides all of this. */
1624 tmpenv = getenv ("HISTSIZE");
1629 var = atoi (tmpenv);
1632 /* Prefer ending up with no history rather than overflowing
1633 readline's history interface, which uses signed 'int'
1638 history_size_setshow_var = var;
1640 /* If the init file hasn't set a size yet, pick the default. */
1641 else if (history_size_setshow_var == 0)
1642 history_size_setshow_var = 256;
1644 /* Note that unlike "set history size 0", "HISTSIZE=0" really sets
1645 the history size to 0... */
1646 stifle_history (history_size_setshow_var);
1648 tmpenv = getenv ("GDBHISTFILE");
1650 history_filename = xstrdup (tmpenv);
1651 else if (!history_filename)
1653 /* We include the current directory so that if the user changes
1654 directories the file written will be the same as the one
1657 /* No leading dots in file names are allowed on MSDOS. */
1658 history_filename = concat (current_directory, "/_gdb_history",
1661 history_filename = concat (current_directory, "/.gdb_history",
1665 read_history (history_filename);
1669 show_prompt (struct ui_file *file, int from_tty,
1670 struct cmd_list_element *c, const char *value)
1672 fprintf_filtered (file, _("Gdb's prompt is \"%s\".\n"), value);
1676 show_async_command_editing_p (struct ui_file *file, int from_tty,
1677 struct cmd_list_element *c, const char *value)
1679 fprintf_filtered (file, _("Editing of command lines as "
1680 "they are typed is %s.\n"),
1685 show_annotation_level (struct ui_file *file, int from_tty,
1686 struct cmd_list_element *c, const char *value)
1688 fprintf_filtered (file, _("Annotation_level is %s.\n"), value);
1692 show_exec_done_display_p (struct ui_file *file, int from_tty,
1693 struct cmd_list_element *c, const char *value)
1695 fprintf_filtered (file, _("Notification of completion for "
1696 "asynchronous execution commands is %s.\n"),
1700 /* New values of the "data-directory" parameter are staged here. */
1701 static char *staged_gdb_datadir;
1703 /* "set" command for the gdb_datadir configuration variable. */
1706 set_gdb_datadir (char *args, int from_tty, struct cmd_list_element *c)
1708 set_gdb_data_directory (staged_gdb_datadir);
1709 observer_notify_gdb_datadir_changed ();
1712 /* "show" command for the gdb_datadir configuration variable. */
1715 show_gdb_datadir (struct ui_file *file, int from_tty,
1716 struct cmd_list_element *c, const char *value)
1718 fprintf_filtered (file, _("GDB's data directory is \"%s\".\n"),
1723 set_history_filename (char *args, int from_tty, struct cmd_list_element *c)
1725 /* We include the current directory so that if the user changes
1726 directories the file written will be the same as the one
1728 if (!IS_ABSOLUTE_PATH (history_filename))
1729 history_filename = reconcat (history_filename, current_directory, "/",
1730 history_filename, (char *) NULL);
1736 /* Initialize the prompt to a simple "(gdb) " prompt or to whatever
1737 the DEFAULT_PROMPT is. */
1738 set_prompt (DEFAULT_PROMPT);
1740 /* Set things up for annotation_level > 1, if the user ever decides
1742 async_annotation_suffix = "prompt";
1744 /* Set the important stuff up for command editing. */
1745 command_editing_p = 1;
1746 history_expansion_p = 0;
1747 write_history_p = 0;
1749 /* Setup important stuff for command line editing. */
1750 rl_completion_word_break_hook = gdb_completion_word_break_characters;
1751 rl_completion_entry_function = readline_line_completion_function;
1752 rl_completer_word_break_characters = default_word_break_characters ();
1753 rl_completer_quote_characters = get_gdb_completer_quote_characters ();
1754 rl_readline_name = "gdb";
1755 rl_terminal_name = getenv ("TERM");
1757 /* The name for this defun comes from Bash, where it originated.
1758 15 is Control-o, the same binding this function has in Bash. */
1759 rl_add_defun ("operate-and-get-next", gdb_rl_operate_and_get_next, 15);
1761 add_setshow_string_cmd ("prompt", class_support,
1763 _("Set gdb's prompt"),
1764 _("Show gdb's prompt"),
1767 &setlist, &showlist);
1769 add_com ("dont-repeat", class_support, dont_repeat_command, _("\
1770 Don't repeat this command.\nPrimarily \
1771 used inside of user-defined commands that should not be repeated when\n\
1774 add_setshow_boolean_cmd ("editing", class_support,
1775 &async_command_editing_p, _("\
1776 Set editing of command lines as they are typed."), _("\
1777 Show editing of command lines as they are typed."), _("\
1778 Use \"on\" to enable the editing, and \"off\" to disable it.\n\
1779 Without an argument, command line editing is enabled. To edit, use\n\
1780 EMACS-like or VI-like commands like control-P or ESC."),
1781 set_async_editing_command,
1782 show_async_command_editing_p,
1783 &setlist, &showlist);
1785 add_setshow_boolean_cmd ("save", no_class, &write_history_p, _("\
1786 Set saving of the history record on exit."), _("\
1787 Show saving of the history record on exit."), _("\
1788 Use \"on\" to enable the saving, and \"off\" to disable it.\n\
1789 Without an argument, saving is enabled."),
1791 show_write_history_p,
1792 &sethistlist, &showhistlist);
1794 add_setshow_uinteger_cmd ("size", no_class, &history_size_setshow_var, _("\
1795 Set the size of the command history,"), _("\
1796 Show the size of the command history,"), _("\
1797 ie. the number of previous commands to keep a record of.\n\
1798 If set to \"unlimited\", the number of commands kept in the history\n\
1799 list is unlimited. This defaults to the value of the environment\n\
1800 variable \"HISTSIZE\", or to 256 if this variable is not set."),
1801 set_history_size_command,
1803 &sethistlist, &showhistlist);
1805 add_setshow_filename_cmd ("filename", no_class, &history_filename, _("\
1806 Set the filename in which to record the command history"), _("\
1807 Show the filename in which to record the command history"), _("\
1808 (the list of previous commands of which a record is kept)."),
1809 set_history_filename,
1810 show_history_filename,
1811 &sethistlist, &showhistlist);
1813 add_setshow_boolean_cmd ("confirm", class_support, &confirm, _("\
1814 Set whether to confirm potentially dangerous operations."), _("\
1815 Show whether to confirm potentially dangerous operations."), NULL,
1818 &setlist, &showlist);
1820 add_setshow_zinteger_cmd ("annotate", class_obscure, &annotation_level, _("\
1821 Set annotation_level."), _("\
1822 Show annotation_level."), _("\
1823 0 == normal; 1 == fullname (for use when running under emacs)\n\
1824 2 == output annotated suitably for use by programs that control GDB."),
1826 show_annotation_level,
1827 &setlist, &showlist);
1829 add_setshow_boolean_cmd ("exec-done-display", class_support,
1830 &exec_done_display_p, _("\
1831 Set notification of completion for asynchronous execution commands."), _("\
1832 Show notification of completion for asynchronous execution commands."), _("\
1833 Use \"on\" to enable the notification, and \"off\" to disable it."),
1835 show_exec_done_display_p,
1836 &setlist, &showlist);
1838 add_setshow_filename_cmd ("data-directory", class_maintenance,
1839 &staged_gdb_datadir, _("Set GDB's data directory."),
1840 _("Show GDB's data directory."),
1842 When set, GDB uses the specified path to search for data files."),
1843 set_gdb_datadir, show_gdb_datadir,
1849 gdb_init (char *argv0)
1851 if (pre_init_ui_hook)
1852 pre_init_ui_hook ();
1854 /* Run the init function of each source file. */
1857 /* Make sure we return to the original directory upon exit, come
1858 what may, since the OS doesn't do that for us. */
1859 make_final_cleanup (do_chdir_cleanup, xstrdup (current_directory));
1862 init_cmd_lists (); /* This needs to be done first. */
1863 initialize_targets (); /* Setup target_terminal macros for utils.c. */
1864 initialize_utils (); /* Make errors and warnings possible. */
1866 /* Here is where we call all the _initialize_foo routines. */
1867 initialize_all_files ();
1869 /* This creates the current_program_space. Do this after all the
1870 _initialize_foo routines have had a chance to install their
1871 per-sspace data keys. Also do this before
1872 initialize_current_architecture is called, because it accesses
1873 exec_bfd of the current program space. */
1874 initialize_progspace ();
1875 initialize_inferiors ();
1876 initialize_current_architecture ();
1878 initialize_event_loop ();
1879 init_main (); /* But that omits this file! Do it now. */
1881 initialize_stdin_serial ();
1883 async_init_signals ();
1885 /* We need a default language for parsing expressions, so simple
1886 things like "set width 0" won't fail if no language is explicitly
1887 set in a config file or implicitly set by reading an executable
1889 set_language (language_c);
1890 expected_language = current_language; /* Don't warn about the change. */
1892 /* Allow another UI to initialize. If the UI fails to initialize,
1893 and it wants GDB to revert to the CLI, it should clear
1894 deprecated_init_ui_hook. */
1895 if (deprecated_init_ui_hook)
1896 deprecated_init_ui_hook (argv0);
1898 /* Python initialization, for example, can require various commands to be
1899 installed. For example "info pretty-printer" needs the "info"
1900 prefix to be installed. Keep things simple and just do final
1901 script initialization here. */
1902 finish_ext_lang_initialization ();