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"
28 #include "exceptions.h"
31 #include "target-dcache.h"
32 #include "breakpoint.h"
34 #include "expression.h"
37 #include "terminal.h" /* For job_control. */
39 #include "completer.h"
44 #include "gdb_assert.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"
69 #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
);
376 /* Execute the line P as a command, in the current user context.
377 Pass FROM_TTY as second argument to the defining function. */
380 execute_command (char *p
, int from_tty
)
382 struct cleanup
*cleanup_if_error
, *cleanup
;
383 struct cmd_list_element
*c
;
386 cleanup_if_error
= make_bpstat_clear_actions_cleanup ();
387 cleanup
= prepare_execute_command ();
389 /* Force cleanup of any alloca areas if using C alloca instead of
393 /* This can happen when command_line_input hits end of file. */
396 do_cleanups (cleanup
);
397 discard_cleanups (cleanup_if_error
);
401 target_log_command (p
);
403 while (*p
== ' ' || *p
== '\t')
409 int was_sync
= sync_execution
;
413 /* If trace-commands is set then this will print this command. */
414 print_command_trace (p
);
416 c
= lookup_cmd (&cmd
, cmdlist
, "", 0, 1);
419 /* Pass null arg rather than an empty one. */
422 /* FIXME: cagney/2002-02-02: The c->type test is pretty dodgy
423 while the is_complete_command(cfunc) test is just plain
424 bogus. They should both be replaced by a test of the form
425 c->strip_trailing_white_space_p. */
426 /* NOTE: cagney/2002-02-02: The function.cfunc in the below
427 can't be replaced with func. This is because it is the
428 cfunc, and not the func, that has the value that the
429 is_complete_command hack is testing for. */
430 /* Clear off trailing whitespace, except for set and complete
433 && c
->type
!= set_cmd
434 && !is_complete_command (c
))
436 p
= arg
+ strlen (arg
) - 1;
437 while (p
>= arg
&& (*p
== ' ' || *p
== '\t'))
442 /* If this command has been pre-hooked, run the hook first. */
443 execute_cmd_pre_hook (c
);
445 if (c
->deprecated_warn_user
)
446 deprecated_cmd_warning (line
);
448 /* c->user_commands would be NULL in the case of a python command. */
449 if (c
->class == class_user
&& c
->user_commands
)
450 execute_user_command (c
, arg
);
451 else if (c
->type
== set_cmd
)
452 do_set_command (arg
, from_tty
, c
);
453 else if (c
->type
== show_cmd
)
454 do_show_command (arg
, from_tty
, c
);
455 else if (!cmd_func_p (c
))
456 error (_("That is not a command, just a help topic."));
457 else if (deprecated_call_command_hook
)
458 deprecated_call_command_hook (c
, arg
, from_tty
);
460 cmd_func (c
, arg
, from_tty
);
462 /* If the interpreter is in sync mode (we're running a user
463 command's list, running command hooks or similars), and we
464 just ran a synchronous command that started the target, wait
465 for that command to end. */
466 if (!interpreter_async
&& !was_sync
&& sync_execution
)
468 while (gdb_do_one_event () >= 0)
473 /* If this command has been post-hooked, run the hook last. */
474 execute_cmd_post_hook (c
);
478 check_frame_language_change ();
480 do_cleanups (cleanup
);
481 discard_cleanups (cleanup_if_error
);
484 /* Run execute_command for P and FROM_TTY. Capture its output into the
485 returned string, do not display it to the screen. BATCH_FLAG will be
486 temporarily set to true. */
489 execute_command_to_string (char *p
, int from_tty
)
491 struct ui_file
*str_file
;
492 struct cleanup
*cleanup
;
495 /* GDB_STDOUT should be better already restored during these
496 restoration callbacks. */
497 cleanup
= set_batch_flag_and_make_cleanup_restore_page_info ();
499 make_cleanup_restore_integer (&interpreter_async
);
500 interpreter_async
= 0;
502 str_file
= mem_fileopen ();
504 make_cleanup_ui_file_delete (str_file
);
505 make_cleanup_restore_ui_file (&gdb_stdout
);
506 make_cleanup_restore_ui_file (&gdb_stderr
);
507 make_cleanup_restore_ui_file (&gdb_stdlog
);
508 make_cleanup_restore_ui_file (&gdb_stdtarg
);
509 make_cleanup_restore_ui_file (&gdb_stdtargerr
);
511 if (ui_out_redirect (current_uiout
, str_file
) < 0)
512 warning (_("Current output protocol does not support redirection"));
514 make_cleanup_ui_out_redirect_pop (current_uiout
);
516 gdb_stdout
= str_file
;
517 gdb_stderr
= str_file
;
518 gdb_stdlog
= str_file
;
519 gdb_stdtarg
= str_file
;
520 gdb_stdtargerr
= str_file
;
522 execute_command (p
, from_tty
);
524 retval
= ui_file_xstrdup (str_file
, NULL
);
526 do_cleanups (cleanup
);
531 /* Read commands from `instream' and execute them
532 until end of file or error reading instream. */
537 struct cleanup
*old_chain
;
539 int stdin_is_tty
= ISATTY (stdin
);
541 while (instream
&& !feof (instream
))
543 if (window_hook
&& instream
== stdin
)
544 (*window_hook
) (instream
, get_prompt ());
547 if (instream
== stdin
&& stdin_is_tty
)
548 reinitialize_more_filter ();
549 old_chain
= make_cleanup (null_cleanup
, 0);
551 /* Get a command-line. This calls the readline package. */
552 command
= command_line_input (instream
== stdin
?
553 get_prompt () : (char *) NULL
,
554 instream
== stdin
, "prompt");
557 do_cleanups (old_chain
);
561 make_command_stats_cleanup (1);
563 execute_command (command
, instream
== stdin
);
565 /* Do any commands attached to breakpoint we are stopped at. */
566 bpstat_do_actions ();
568 do_cleanups (old_chain
);
572 /* When nonzero, cause dont_repeat to do nothing. This should only be
573 set via prevent_dont_repeat. */
575 static int suppress_dont_repeat
= 0;
577 /* Commands call this if they do not want to be repeated by null lines. */
582 if (suppress_dont_repeat
|| server_command
)
585 /* If we aren't reading from standard input, we are saving the last
586 thing read from stdin in line and don't want to delete it. Null
587 lines won't repeat here in any case. */
588 if (instream
== stdin
)
589 *saved_command_line
= 0;
592 /* Prevent dont_repeat from working, and return a cleanup that
593 restores the previous state. */
596 prevent_dont_repeat (void)
598 struct cleanup
*result
= make_cleanup_restore_integer (&suppress_dont_repeat
);
600 suppress_dont_repeat
= 1;
605 /* Read a line from the stream "instream" without command line editing.
607 It prints PROMPT_ARG once at the start.
608 Action is compatible with "readline", e.g. space for the result is
609 malloc'd and should be freed by the caller.
611 A NULL return means end of file. */
613 gdb_readline (char *prompt_arg
)
618 int result_size
= 80;
622 /* Don't use a _filtered function here. It causes the assumed
623 character position to be off, since the newline we read from
624 the user is not accounted for. */
625 fputs_unfiltered (prompt_arg
, gdb_stdout
);
626 gdb_flush (gdb_stdout
);
629 result
= (char *) xmalloc (result_size
);
633 /* Read from stdin if we are executing a user defined command.
634 This is the right thing for prompt_for_continue, at least. */
635 c
= fgetc (instream
? instream
: stdin
);
640 /* The last line does not end with a newline. Return it, and
641 if we are called again fgetc will still return EOF and
642 we'll return NULL then. */
650 if (input_index
> 0 && result
[input_index
- 1] == '\r')
655 result
[input_index
++] = c
;
656 while (input_index
>= result_size
)
659 result
= (char *) xrealloc (result
, result_size
);
663 result
[input_index
++] = '\0';
667 /* Variables which control command line editing and history
668 substitution. These variables are given default values at the end
670 static int command_editing_p
;
672 /* NOTE 1999-04-29: This variable will be static again, once we modify
673 gdb to use the event loop as the default command loop and we merge
674 event-top.c into this file, top.c. */
676 /* static */ int history_expansion_p
;
678 static int write_history_p
;
680 show_write_history_p (struct ui_file
*file
, int from_tty
,
681 struct cmd_list_element
*c
, const char *value
)
683 fprintf_filtered (file
, _("Saving of the history record on exit is %s.\n"),
687 /* The variable associated with the "set/show history size"
689 static unsigned int history_size_setshow_var
;
692 show_history_size (struct ui_file
*file
, int from_tty
,
693 struct cmd_list_element
*c
, const char *value
)
695 fprintf_filtered (file
, _("The size of the command history is %s.\n"),
699 static char *history_filename
;
701 show_history_filename (struct ui_file
*file
, int from_tty
,
702 struct cmd_list_element
*c
, const char *value
)
704 fprintf_filtered (file
, _("The filename in which to record "
705 "the command history is \"%s\".\n"),
709 /* This is like readline(), but it has some gdb-specific behavior.
710 gdb may want readline in both the synchronous and async modes during
711 a single gdb invocation. At the ordinary top-level prompt we might
712 be using the async readline. That means we can't use
713 rl_pre_input_hook, since it doesn't work properly in async mode.
714 However, for a secondary prompt (" >", such as occurs during a
715 `define'), gdb wants a synchronous response.
717 We used to call readline() directly, running it in synchronous
718 mode. But mixing modes this way is not supported, and as of
719 readline 5.x it no longer works; the arrow keys come unbound during
720 the synchronous call. So we make a nested call into the event
721 loop. That's what gdb_readline_wrapper is for. */
723 /* A flag set as soon as gdb_readline_wrapper_line is called; we can't
724 rely on gdb_readline_wrapper_result, which might still be NULL if
725 the user types Control-D for EOF. */
726 static int gdb_readline_wrapper_done
;
728 /* The result of the current call to gdb_readline_wrapper, once a newline
730 static char *gdb_readline_wrapper_result
;
732 /* Any intercepted hook. Operate-and-get-next sets this, expecting it
733 to be called after the newline is processed (which will redisplay
734 the prompt). But in gdb_readline_wrapper we will not get a new
735 prompt until the next call, or until we return to the event loop.
736 So we disable this hook around the newline and restore it before we
738 static void (*saved_after_char_processing_hook
) (void);
740 /* This function is called when readline has seen a complete line of
744 gdb_readline_wrapper_line (char *line
)
746 gdb_assert (!gdb_readline_wrapper_done
);
747 gdb_readline_wrapper_result
= line
;
748 gdb_readline_wrapper_done
= 1;
750 /* Prevent operate-and-get-next from acting too early. */
751 saved_after_char_processing_hook
= after_char_processing_hook
;
752 after_char_processing_hook
= NULL
;
754 /* Prevent parts of the prompt from being redisplayed if annotations
755 are enabled, and readline's state getting out of sync. */
756 if (async_command_editing_p
)
757 rl_callback_handler_remove ();
760 struct gdb_readline_wrapper_cleanup
762 void (*handler_orig
) (char *);
763 int already_prompted_orig
;
767 gdb_readline_wrapper_cleanup (void *arg
)
769 struct gdb_readline_wrapper_cleanup
*cleanup
= arg
;
771 rl_already_prompted
= cleanup
->already_prompted_orig
;
773 gdb_assert (input_handler
== gdb_readline_wrapper_line
);
774 input_handler
= cleanup
->handler_orig
;
775 gdb_readline_wrapper_result
= NULL
;
776 gdb_readline_wrapper_done
= 0;
778 after_char_processing_hook
= saved_after_char_processing_hook
;
779 saved_after_char_processing_hook
= NULL
;
785 gdb_readline_wrapper (char *prompt
)
787 struct cleanup
*back_to
;
788 struct gdb_readline_wrapper_cleanup
*cleanup
;
791 cleanup
= xmalloc (sizeof (*cleanup
));
792 cleanup
->handler_orig
= input_handler
;
793 input_handler
= gdb_readline_wrapper_line
;
795 cleanup
->already_prompted_orig
= rl_already_prompted
;
797 back_to
= make_cleanup (gdb_readline_wrapper_cleanup
, cleanup
);
799 /* Display our prompt and prevent double prompt display. */
800 display_gdb_prompt (prompt
);
801 rl_already_prompted
= 1;
803 if (after_char_processing_hook
)
804 (*after_char_processing_hook
) ();
805 gdb_assert (after_char_processing_hook
== NULL
);
807 while (gdb_do_one_event () >= 0)
808 if (gdb_readline_wrapper_done
)
811 retval
= gdb_readline_wrapper_result
;
812 do_cleanups (back_to
);
817 /* The current saved history number from operate-and-get-next.
818 This is -1 if not valid. */
819 static int operate_saved_history
= -1;
821 /* This is put on the appropriate hook and helps operate-and-get-next
824 gdb_rl_operate_and_get_next_completion (void)
826 int delta
= where_history () - operate_saved_history
;
828 /* The `key' argument to rl_get_previous_history is ignored. */
829 rl_get_previous_history (delta
, 0);
830 operate_saved_history
= -1;
832 /* readline doesn't automatically update the display for us. */
835 after_char_processing_hook
= NULL
;
836 rl_pre_input_hook
= NULL
;
839 /* This is a gdb-local readline command handler. It accepts the
840 current command line (like RET does) and, if this command was taken
841 from the history, arranges for the next command in the history to
842 appear on the command line when the prompt returns.
843 We ignore the arguments. */
845 gdb_rl_operate_and_get_next (int count
, int key
)
849 /* Use the async hook. */
850 after_char_processing_hook
= gdb_rl_operate_and_get_next_completion
;
852 /* Find the current line, and find the next line to use. */
853 where
= where_history();
855 if ((history_is_stifled () && (history_length
>= history_max_entries
))
856 || (where
>= history_length
- 1))
857 operate_saved_history
= where
;
859 operate_saved_history
= where
+ 1;
861 return rl_newline (1, key
);
864 /* Read one line from the command input stream `instream'
865 into the local static buffer `linebuffer' (whose current length
867 The buffer is made bigger as necessary.
868 Returns the address of the start of the line.
870 NULL is returned for end of file.
872 *If* the instream == stdin & stdin is a terminal, the line read
873 is copied into the file line saver (global var char *line,
874 length linesize) so that it can be duplicated.
876 This routine either uses fancy command line editing or
877 simple input as the user has requested. */
880 command_line_input (char *prompt_arg
, int repeat
, char *annotation_suffix
)
882 static char *linebuffer
= 0;
883 static unsigned linelength
= 0;
887 char *local_prompt
= prompt_arg
;
891 /* The annotation suffix must be non-NULL. */
892 if (annotation_suffix
== NULL
)
893 annotation_suffix
= "";
895 if (annotation_level
> 1 && instream
== stdin
)
897 local_prompt
= alloca ((prompt_arg
== NULL
? 0 : strlen (prompt_arg
))
898 + strlen (annotation_suffix
) + 40);
899 if (prompt_arg
== NULL
)
900 local_prompt
[0] = '\0';
902 strcpy (local_prompt
, prompt_arg
);
903 strcat (local_prompt
, "\n\032\032");
904 strcat (local_prompt
, annotation_suffix
);
905 strcat (local_prompt
, "\n");
911 linebuffer
= (char *) xmalloc (linelength
);
916 /* Control-C quits instantly if typed while in this loop
917 since it should not wait until the user types a newline. */
922 signal (STOP_SIGNAL
, handle_stop_sig
);
927 /* Make sure that all output has been output. Some machines may
928 let you get away with leaving out some of the gdb_flush, but
931 gdb_flush (gdb_stdout
);
932 gdb_flush (gdb_stderr
);
934 if (source_file_name
!= NULL
)
935 ++source_line_number
;
937 if (annotation_level
> 1 && instream
== stdin
)
939 puts_unfiltered ("\n\032\032pre-");
940 puts_unfiltered (annotation_suffix
);
941 puts_unfiltered ("\n");
944 /* Don't use fancy stuff if not talking to stdin. */
945 if (deprecated_readline_hook
&& input_from_terminal_p ())
947 rl
= (*deprecated_readline_hook
) (local_prompt
);
949 else if (command_editing_p
&& input_from_terminal_p ())
951 rl
= gdb_readline_wrapper (local_prompt
);
955 rl
= gdb_readline (local_prompt
);
958 if (annotation_level
> 1 && instream
== stdin
)
960 puts_unfiltered ("\n\032\032post-");
961 puts_unfiltered (annotation_suffix
);
962 puts_unfiltered ("\n");
965 if (!rl
|| rl
== (char *) EOF
)
970 if (strlen (rl
) + 1 + (p
- linebuffer
) > linelength
)
972 linelength
= strlen (rl
) + 1 + (p
- linebuffer
);
973 nline
= (char *) xrealloc (linebuffer
, linelength
);
974 p
+= nline
- linebuffer
;
978 /* Copy line. Don't copy null at end. (Leaves line alone
979 if this was just a newline). */
983 xfree (rl
); /* Allocated in readline. */
985 if (p
== linebuffer
|| *(p
- 1) != '\\')
988 p
--; /* Put on top of '\'. */
989 local_prompt
= (char *) 0;
994 signal (STOP_SIGNAL
, SIG_DFL
);
1001 #define SERVER_COMMAND_LENGTH 7
1003 (p
- linebuffer
> SERVER_COMMAND_LENGTH
)
1004 && strncmp (linebuffer
, "server ", SERVER_COMMAND_LENGTH
) == 0;
1007 /* Note that we don't set `line'. Between this and the check in
1008 dont_repeat, this insures that repeating will still do the
1011 return linebuffer
+ SERVER_COMMAND_LENGTH
;
1014 /* Do history expansion if that is wished. */
1015 if (history_expansion_p
&& instream
== stdin
1016 && ISATTY (instream
))
1018 char *history_value
;
1021 *p
= '\0'; /* Insert null now. */
1022 expanded
= history_expand (linebuffer
, &history_value
);
1025 /* Print the changes. */
1026 printf_unfiltered ("%s\n", history_value
);
1028 /* If there was an error, call this function again. */
1031 xfree (history_value
);
1032 return command_line_input (prompt_arg
, repeat
,
1035 if (strlen (history_value
) > linelength
)
1037 linelength
= strlen (history_value
) + 1;
1038 linebuffer
= (char *) xrealloc (linebuffer
, linelength
);
1040 strcpy (linebuffer
, history_value
);
1041 p
= linebuffer
+ strlen (linebuffer
);
1043 xfree (history_value
);
1046 /* If we just got an empty line, and that is supposed to repeat the
1047 previous command, return the value in the global buffer. */
1048 if (repeat
&& p
== linebuffer
)
1049 return saved_command_line
;
1050 for (p1
= linebuffer
; *p1
== ' ' || *p1
== '\t'; p1
++);
1052 return saved_command_line
;
1056 /* Add line to history if appropriate. */
1057 if (*linebuffer
&& input_from_terminal_p ())
1058 add_history (linebuffer
);
1060 /* Note: lines consisting solely of comments are added to the command
1061 history. This is useful when you type a command, and then
1062 realize you don't want to execute it quite yet. You can comment
1063 out the command and then later fetch it from the value history
1064 and remove the '#'. The kill ring is probably better, but some
1065 people are in the habit of commenting things out. */
1067 *p1
= '\0'; /* Found a comment. */
1069 /* Save into global buffer if appropriate. */
1072 if (linelength
> saved_command_line_size
)
1074 saved_command_line
= xrealloc (saved_command_line
, linelength
);
1075 saved_command_line_size
= linelength
;
1077 strcpy (saved_command_line
, linebuffer
);
1078 return saved_command_line
;
1084 /* Print the GDB banner. */
1086 print_gdb_version (struct ui_file
*stream
)
1088 /* From GNU coding standards, first line is meant to be easy for a
1089 program to parse, and is just canonical program name and version
1090 number, which starts after last space. */
1092 fprintf_filtered (stream
, "GNU gdb %s%s\n", PKGVERSION
, version
);
1094 /* Second line is a copyright notice. */
1096 fprintf_filtered (stream
,
1097 "Copyright (C) 2014 Free Software Foundation, Inc.\n");
1099 /* Following the copyright is a brief statement that the program is
1100 free software, that users are free to copy and change it on
1101 certain conditions, that it is covered by the GNU GPL, and that
1102 there is no warranty. */
1104 fprintf_filtered (stream
, "\
1105 License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>\
1106 \nThis is free software: you are free to change and redistribute it.\n\
1107 There is NO WARRANTY, to the extent permitted by law. Type \"show copying\"\n\
1108 and \"show warranty\" for details.\n");
1110 /* After the required info we print the configuration information. */
1112 fprintf_filtered (stream
, "This GDB was configured as \"");
1113 if (strcmp (host_name
, target_name
) != 0)
1115 fprintf_filtered (stream
, "--host=%s --target=%s",
1116 host_name
, target_name
);
1120 fprintf_filtered (stream
, "%s", host_name
);
1122 fprintf_filtered (stream
, "\".\n\
1123 Type \"show configuration\" for configuration details.");
1125 if (REPORT_BUGS_TO
[0])
1127 fprintf_filtered (stream
,
1128 _("\nFor bug reporting instructions, please see:\n"));
1129 fprintf_filtered (stream
, "%s.\n", REPORT_BUGS_TO
);
1131 fprintf_filtered (stream
,
1132 _("Find the GDB manual and other documentation \
1133 resources online at:\n<http://www.gnu.org/software/gdb/documentation/>.\n"));
1134 fprintf_filtered (stream
, _("For help, type \"help\".\n"));
1135 fprintf_filtered (stream
, _("Type \"apropos word\" to search for \
1136 commands related to \"word\"."));
1139 /* Print the details of GDB build-time configuration. */
1141 print_gdb_configuration (struct ui_file
*stream
)
1143 fprintf_filtered (stream
, _("\
1144 This GDB was configured as follows:\n\
1145 configure --host=%s --target=%s\n\
1146 "), host_name
, target_name
);
1147 fprintf_filtered (stream
, _("\
1148 --with-auto-load-dir=%s\n\
1149 --with-auto-load-safe-path=%s\n\
1150 "), AUTO_LOAD_DIR
, AUTO_LOAD_SAFE_PATH
);
1152 fprintf_filtered (stream
, _("\
1156 fprintf_filtered (stream
, _("\
1161 fprintf_filtered (stream
, _("\
1162 --with-gdb-datadir=%s%s\n\
1163 "), GDB_DATADIR
, GDB_DATADIR_RELOCATABLE
? " (relocatable)" : "");
1165 fprintf_filtered (stream
, _("\
1166 --with-iconv-bin=%s%s\n\
1167 "), ICONV_BIN
, ICONV_BIN_RELOCATABLE
? " (relocatable)" : "");
1169 if (JIT_READER_DIR
[0])
1170 fprintf_filtered (stream
, _("\
1171 --with-jit-reader-dir=%s%s\n\
1172 "), JIT_READER_DIR
, JIT_READER_DIR_RELOCATABLE
? " (relocatable)" : "");
1173 #if HAVE_LIBUNWIND_IA64_H
1174 fprintf_filtered (stream
, _("\
1175 --with-libunwind-ia64\n\
1178 fprintf_filtered (stream
, _("\
1179 --without-libunwind-ia64\n\
1183 fprintf_filtered (stream
, _("\
1187 fprintf_filtered (stream
, _("\
1191 #ifdef WITH_PYTHON_PATH
1192 fprintf_filtered (stream
, _("\
1193 --with-python=%s%s\n\
1194 "), WITH_PYTHON_PATH
, PYTHON_PATH_RELOCATABLE
? " (relocatable)" : "");
1197 fprintf_filtered (stream
, _("\
1198 --with-relocated-sources=%s\n\
1202 fprintf_filtered (stream
, _("\
1203 --with-separate-debug-dir=%s%s\n\
1204 "), DEBUGDIR
, DEBUGDIR_RELOCATABLE
? " (relocatable)" : "");
1205 if (TARGET_SYSTEM_ROOT
[0])
1206 fprintf_filtered (stream
, _("\
1207 --with-sysroot=%s%s\n\
1208 "), TARGET_SYSTEM_ROOT
, TARGET_SYSTEM_ROOT_RELOCATABLE
? " (relocatable)" : "");
1209 if (SYSTEM_GDBINIT
[0])
1210 fprintf_filtered (stream
, _("\
1211 --with-system-gdbinit=%s%s\n\
1212 "), SYSTEM_GDBINIT
, SYSTEM_GDBINIT_RELOCATABLE
? " (relocatable)" : "");
1214 fprintf_filtered (stream
, _("\
1218 fprintf_filtered (stream
, _("\
1222 #if HAVE_LIBBABELTRACE
1223 fprintf_filtered (stream
, _("\
1224 --with-babeltrace\n\
1227 fprintf_filtered (stream
, _("\
1228 --without-babeltrace\n\
1231 /* We assume "relocatable" will be printed at least once, thus we always
1232 print this text. It's a reasonably safe assumption for now. */
1233 fprintf_filtered (stream
, _("\n\
1234 (\"Relocatable\" means the directory can be moved with the GDB installation\n\
1235 tree, and GDB will still find it.)\n\
1240 /* The current top level prompt, settable with "set prompt", and/or
1241 with the python `gdb.prompt_hook' hook. */
1242 static char *top_prompt
;
1244 /* Access method for the GDB prompt string. */
1252 /* Set method for the GDB prompt string. */
1255 set_prompt (const char *s
)
1257 char *p
= xstrdup (s
);
1270 /* Callback for iterate_over_inferiors. Kills or detaches the given
1271 inferior, depending on how we originally gained control of it. */
1274 kill_or_detach (struct inferior
*inf
, void *args
)
1276 struct qt_args
*qt
= args
;
1277 struct thread_info
*thread
;
1282 thread
= any_thread_of_process (inf
->pid
);
1285 switch_to_thread (thread
->ptid
);
1287 /* Leave core files alone. */
1288 if (target_has_execution
)
1290 if (inf
->attach_flag
)
1291 target_detach (qt
->args
, qt
->from_tty
);
1300 /* Callback for iterate_over_inferiors. Prints info about what GDB
1301 will do to each inferior on a "quit". ARG points to a struct
1302 ui_out where output is to be collected. */
1305 print_inferior_quit_action (struct inferior
*inf
, void *arg
)
1307 struct ui_file
*stb
= arg
;
1312 if (inf
->attach_flag
)
1313 fprintf_filtered (stb
,
1314 _("\tInferior %d [%s] will be detached.\n"), inf
->num
,
1315 target_pid_to_str (pid_to_ptid (inf
->pid
)));
1317 fprintf_filtered (stb
,
1318 _("\tInferior %d [%s] will be killed.\n"), inf
->num
,
1319 target_pid_to_str (pid_to_ptid (inf
->pid
)));
1324 /* If necessary, make the user confirm that we should quit. Return
1325 non-zero if we should quit, zero if we shouldn't. */
1330 struct ui_file
*stb
;
1331 struct cleanup
*old_chain
;
1335 /* Don't even ask if we're only debugging a core file inferior. */
1336 if (!have_live_inferiors ())
1339 /* Build the query string as a single string. */
1340 stb
= mem_fileopen ();
1341 old_chain
= make_cleanup_ui_file_delete (stb
);
1343 fprintf_filtered (stb
, _("A debugging session is active.\n\n"));
1344 iterate_over_inferiors (print_inferior_quit_action
, stb
);
1345 fprintf_filtered (stb
, _("\nQuit anyway? "));
1347 str
= ui_file_xstrdup (stb
, NULL
);
1348 make_cleanup (xfree
, str
);
1350 qr
= query ("%s", str
);
1351 do_cleanups (old_chain
);
1355 /* Quit without asking for confirmation. */
1358 quit_force (char *args
, int from_tty
)
1362 volatile struct gdb_exception ex
;
1364 /* An optional expression may be used to cause gdb to terminate with the
1365 value of that expression. */
1368 struct value
*val
= parse_and_eval (args
);
1370 exit_code
= (int) value_as_long (val
);
1372 else if (return_child_result
)
1373 exit_code
= return_child_result_value
;
1376 qt
.from_tty
= from_tty
;
1378 /* Wrappers to make the code below a bit more readable. */
1380 TRY_CATCH (ex, RETURN_MASK_ALL)
1382 #define DO_PRINT_EX \
1383 if (ex.reason < 0) \
1384 exception_print (gdb_stderr, ex)
1386 /* We want to handle any quit errors and exit regardless. */
1388 /* Get out of tfind mode, and kill or detach all inferiors. */
1391 disconnect_tracing ();
1392 iterate_over_inferiors (kill_or_detach
, &qt
);
1396 /* Give all pushed targets a chance to do minimal cleanup, and pop
1404 /* Save the history information if it is appropriate to do so. */
1407 if (write_history_p
&& history_filename
1408 && input_from_terminal_p ())
1409 write_history (history_filename
);
1413 /* Do any final cleanups before exiting. */
1416 do_final_cleanups (all_cleanups ());
1423 /* Returns whether GDB is running on a terminal and input is
1424 currently coming from that terminal. */
1427 input_from_terminal_p (void)
1432 if (gdb_has_a_terminal () && instream
== stdin
)
1435 /* If INSTREAM is unset, and we are not in a user command, we
1436 must be in Insight. That's like having a terminal, for our
1438 if (instream
== NULL
&& !in_user_command
)
1445 dont_repeat_command (char *ignored
, int from_tty
)
1447 /* Can't call dont_repeat here because we're not necessarily reading
1449 *saved_command_line
= 0;
1452 /* Functions to manipulate command line editing control variables. */
1454 /* Number of commands to print in each call to show_commands. */
1455 #define Hist_print 10
1457 show_commands (char *args
, int from_tty
)
1459 /* Index for history commands. Relative to history_base. */
1462 /* Number of the history entry which we are planning to display next.
1463 Relative to history_base. */
1466 /* Print out some of the commands from the command history. */
1470 if (args
[0] == '+' && args
[1] == '\0')
1471 /* "info editing +" should print from the stored position. */
1474 /* "info editing <exp>" should print around command number <exp>. */
1475 num
= (parse_and_eval_long (args
) - history_base
) - Hist_print
/ 2;
1477 /* "show commands" means print the last Hist_print commands. */
1480 num
= history_length
- Hist_print
;
1486 /* If there are at least Hist_print commands, we want to display the last
1487 Hist_print rather than, say, the last 6. */
1488 if (history_length
- num
< Hist_print
)
1490 num
= history_length
- Hist_print
;
1496 offset
< num
+ Hist_print
&& offset
< history_length
;
1499 printf_filtered ("%5d %s\n", history_base
+ offset
,
1500 (history_get (history_base
+ offset
))->line
);
1503 /* The next command we want to display is the next one that we haven't
1507 /* If the user repeats this command with return, it should do what
1508 "show commands +" does. This is unnecessary if arg is null,
1509 because "show commands +" is not useful after "show commands". */
1510 if (from_tty
&& args
)
1517 /* Called by do_setshow_command. */
1519 set_history_size_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
1521 /* Readline's history interface works with 'int', so it can only
1522 handle history sizes up to INT_MAX. The command itself is
1523 uinteger, so UINT_MAX means "unlimited", but we only get that if
1524 the user does "set history size 0" -- "set history size <UINT_MAX>"
1525 throws out-of-range. */
1526 if (history_size_setshow_var
> INT_MAX
1527 && history_size_setshow_var
!= UINT_MAX
)
1529 unsigned int new_value
= history_size_setshow_var
;
1531 /* Restore previous value before throwing. */
1532 if (history_is_stifled ())
1533 history_size_setshow_var
= history_max_entries
;
1535 history_size_setshow_var
= UINT_MAX
;
1537 error (_("integer %u out of range"), new_value
);
1540 /* Commit the new value to readline's history. */
1541 if (history_size_setshow_var
== UINT_MAX
)
1542 unstifle_history ();
1544 stifle_history (history_size_setshow_var
);
1548 set_history (char *args
, int from_tty
)
1550 printf_unfiltered (_("\"set history\" must be followed "
1551 "by the name of a history subcommand.\n"));
1552 help_list (sethistlist
, "set history ", -1, gdb_stdout
);
1556 show_history (char *args
, int from_tty
)
1558 cmd_show_list (showhistlist
, from_tty
, "");
1561 int info_verbose
= 0; /* Default verbose msgs off. */
1563 /* Called by do_setshow_command. An elaborate joke. */
1565 set_verbose (char *args
, int from_tty
, struct cmd_list_element
*c
)
1567 const char *cmdname
= "verbose";
1568 struct cmd_list_element
*showcmd
;
1570 showcmd
= lookup_cmd_1 (&cmdname
, showlist
, NULL
, 1);
1571 gdb_assert (showcmd
!= NULL
&& showcmd
!= CMD_LIST_AMBIGUOUS
);
1575 c
->doc
= "Set verbose printing of informational messages.";
1576 showcmd
->doc
= "Show verbose printing of informational messages.";
1580 c
->doc
= "Set verbosity.";
1581 showcmd
->doc
= "Show verbosity.";
1585 /* Init the history buffer. Note that we are called after the init file(s)
1586 have been read so that the user can change the history file via his
1587 .gdbinit file (for instance). The GDBHISTFILE environment variable
1588 overrides all of this. */
1595 tmpenv
= getenv ("HISTSIZE");
1600 var
= atoi (tmpenv
);
1603 /* Prefer ending up with no history rather than overflowing
1604 readline's history interface, which uses signed 'int'
1609 history_size_setshow_var
= var
;
1611 /* If the init file hasn't set a size yet, pick the default. */
1612 else if (history_size_setshow_var
== 0)
1613 history_size_setshow_var
= 256;
1615 /* Note that unlike "set history size 0", "HISTSIZE=0" really sets
1616 the history size to 0... */
1617 stifle_history (history_size_setshow_var
);
1619 tmpenv
= getenv ("GDBHISTFILE");
1621 history_filename
= xstrdup (tmpenv
);
1622 else if (!history_filename
)
1624 /* We include the current directory so that if the user changes
1625 directories the file written will be the same as the one
1628 /* No leading dots in file names are allowed on MSDOS. */
1629 history_filename
= concat (current_directory
, "/_gdb_history",
1632 history_filename
= concat (current_directory
, "/.gdb_history",
1636 read_history (history_filename
);
1640 show_prompt (struct ui_file
*file
, int from_tty
,
1641 struct cmd_list_element
*c
, const char *value
)
1643 fprintf_filtered (file
, _("Gdb's prompt is \"%s\".\n"), value
);
1647 show_async_command_editing_p (struct ui_file
*file
, int from_tty
,
1648 struct cmd_list_element
*c
, const char *value
)
1650 fprintf_filtered (file
, _("Editing of command lines as "
1651 "they are typed is %s.\n"),
1656 show_annotation_level (struct ui_file
*file
, int from_tty
,
1657 struct cmd_list_element
*c
, const char *value
)
1659 fprintf_filtered (file
, _("Annotation_level is %s.\n"), value
);
1663 show_exec_done_display_p (struct ui_file
*file
, int from_tty
,
1664 struct cmd_list_element
*c
, const char *value
)
1666 fprintf_filtered (file
, _("Notification of completion for "
1667 "asynchronous execution commands is %s.\n"),
1671 /* "set" command for the gdb_datadir configuration variable. */
1674 set_gdb_datadir (char *args
, int from_tty
, struct cmd_list_element
*c
)
1676 observer_notify_gdb_datadir_changed ();
1680 set_history_filename (char *args
, int from_tty
, struct cmd_list_element
*c
)
1682 /* We include the current directory so that if the user changes
1683 directories the file written will be the same as the one
1685 if (!IS_ABSOLUTE_PATH (history_filename
))
1686 history_filename
= reconcat (history_filename
, current_directory
, "/",
1687 history_filename
, (char *) NULL
);
1693 /* Initialize the prompt to a simple "(gdb) " prompt or to whatever
1694 the DEFAULT_PROMPT is. */
1695 set_prompt (DEFAULT_PROMPT
);
1697 /* Set things up for annotation_level > 1, if the user ever decides
1699 async_annotation_suffix
= "prompt";
1701 /* Set the important stuff up for command editing. */
1702 command_editing_p
= 1;
1703 history_expansion_p
= 0;
1704 write_history_p
= 0;
1706 /* Setup important stuff for command line editing. */
1707 rl_completion_word_break_hook
= gdb_completion_word_break_characters
;
1708 rl_completion_entry_function
= readline_line_completion_function
;
1709 rl_completer_word_break_characters
= default_word_break_characters ();
1710 rl_completer_quote_characters
= get_gdb_completer_quote_characters ();
1711 rl_readline_name
= "gdb";
1712 rl_terminal_name
= getenv ("TERM");
1714 /* The name for this defun comes from Bash, where it originated.
1715 15 is Control-o, the same binding this function has in Bash. */
1716 rl_add_defun ("operate-and-get-next", gdb_rl_operate_and_get_next
, 15);
1718 add_setshow_string_cmd ("prompt", class_support
,
1720 _("Set gdb's prompt"),
1721 _("Show gdb's prompt"),
1724 &setlist
, &showlist
);
1726 add_com ("dont-repeat", class_support
, dont_repeat_command
, _("\
1727 Don't repeat this command.\nPrimarily \
1728 used inside of user-defined commands that should not be repeated when\n\
1731 add_setshow_boolean_cmd ("editing", class_support
,
1732 &async_command_editing_p
, _("\
1733 Set editing of command lines as they are typed."), _("\
1734 Show editing of command lines as they are typed."), _("\
1735 Use \"on\" to enable the editing, and \"off\" to disable it.\n\
1736 Without an argument, command line editing is enabled. To edit, use\n\
1737 EMACS-like or VI-like commands like control-P or ESC."),
1738 set_async_editing_command
,
1739 show_async_command_editing_p
,
1740 &setlist
, &showlist
);
1742 add_setshow_boolean_cmd ("save", no_class
, &write_history_p
, _("\
1743 Set saving of the history record on exit."), _("\
1744 Show saving of the history record on exit."), _("\
1745 Use \"on\" to enable the saving, and \"off\" to disable it.\n\
1746 Without an argument, saving is enabled."),
1748 show_write_history_p
,
1749 &sethistlist
, &showhistlist
);
1751 add_setshow_uinteger_cmd ("size", no_class
, &history_size_setshow_var
, _("\
1752 Set the size of the command history,"), _("\
1753 Show the size of the command history,"), _("\
1754 ie. the number of previous commands to keep a record of.\n\
1755 If set to \"unlimited\", the number of commands kept in the history\n\
1756 list is unlimited. This defaults to the value of the environment\n\
1757 variable \"HISTSIZE\", or to 256 if this variable is not set."),
1758 set_history_size_command
,
1760 &sethistlist
, &showhistlist
);
1762 add_setshow_filename_cmd ("filename", no_class
, &history_filename
, _("\
1763 Set the filename in which to record the command history"), _("\
1764 Show the filename in which to record the command history"), _("\
1765 (the list of previous commands of which a record is kept)."),
1766 set_history_filename
,
1767 show_history_filename
,
1768 &sethistlist
, &showhistlist
);
1770 add_setshow_boolean_cmd ("confirm", class_support
, &confirm
, _("\
1771 Set whether to confirm potentially dangerous operations."), _("\
1772 Show whether to confirm potentially dangerous operations."), NULL
,
1775 &setlist
, &showlist
);
1777 add_setshow_zinteger_cmd ("annotate", class_obscure
, &annotation_level
, _("\
1778 Set annotation_level."), _("\
1779 Show annotation_level."), _("\
1780 0 == normal; 1 == fullname (for use when running under emacs)\n\
1781 2 == output annotated suitably for use by programs that control GDB."),
1783 show_annotation_level
,
1784 &setlist
, &showlist
);
1786 add_setshow_boolean_cmd ("exec-done-display", class_support
,
1787 &exec_done_display_p
, _("\
1788 Set notification of completion for asynchronous execution commands."), _("\
1789 Show notification of completion for asynchronous execution commands."), _("\
1790 Use \"on\" to enable the notification, and \"off\" to disable it."),
1792 show_exec_done_display_p
,
1793 &setlist
, &showlist
);
1795 add_setshow_filename_cmd ("data-directory", class_maintenance
,
1796 &gdb_datadir
, _("Set GDB's data directory."),
1797 _("Show GDB's data directory."),
1799 When set, GDB uses the specified path to search for data files."),
1800 set_gdb_datadir
, NULL
,
1806 gdb_init (char *argv0
)
1808 if (pre_init_ui_hook
)
1809 pre_init_ui_hook ();
1811 /* Run the init function of each source file. */
1814 /* Make sure we return to the original directory upon exit, come
1815 what may, since the OS doesn't do that for us. */
1816 make_final_cleanup (do_chdir_cleanup
, xstrdup (current_directory
));
1819 init_cmd_lists (); /* This needs to be done first. */
1820 initialize_targets (); /* Setup target_terminal macros for utils.c. */
1821 initialize_utils (); /* Make errors and warnings possible. */
1823 /* Here is where we call all the _initialize_foo routines. */
1824 initialize_all_files ();
1826 /* This creates the current_program_space. Do this after all the
1827 _initialize_foo routines have had a chance to install their
1828 per-sspace data keys. Also do this before
1829 initialize_current_architecture is called, because it accesses
1830 exec_bfd of the current program space. */
1831 initialize_progspace ();
1832 initialize_inferiors ();
1833 initialize_current_architecture ();
1835 initialize_event_loop ();
1836 init_main (); /* But that omits this file! Do it now. */
1838 initialize_stdin_serial ();
1840 async_init_signals ();
1842 /* We need a default language for parsing expressions, so simple
1843 things like "set width 0" won't fail if no language is explicitly
1844 set in a config file or implicitly set by reading an executable
1846 set_language (language_c
);
1847 expected_language
= current_language
; /* Don't warn about the change. */
1849 /* Allow another UI to initialize. If the UI fails to initialize,
1850 and it wants GDB to revert to the CLI, it should clear
1851 deprecated_init_ui_hook. */
1852 if (deprecated_init_ui_hook
)
1853 deprecated_init_ui_hook (argv0
);
1855 /* Python initialization, for example, can require various commands to be
1856 installed. For example "info pretty-printer" needs the "info"
1857 prefix to be installed. Keep things simple and just do final
1858 script initialization here. */
1859 finish_ext_lang_initialization ();