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"
31 #include "target-dcache.h"
32 #include "breakpoint.h"
34 #include "expression.h"
37 #include "terminal.h" /* For job_control. */
39 #include "completer.h"
45 #include "event-loop.h"
46 #include "gdbthread.h"
47 #include "extension.h"
51 #include "filenames.h"
53 /* readline include files. */
54 #include "readline/readline.h"
55 #include "readline/history.h"
57 /* readline defines this. */
60 #include <sys/types.h>
62 #include "event-top.h"
67 #include "tracepoint.h"
70 extern void initialize_all_files (void);
72 #define PROMPT(X) the_prompts.prompt_stack[the_prompts.top + X].prompt
73 #define PREFIX(X) the_prompts.prompt_stack[the_prompts.top + X].prefix
74 #define SUFFIX(X) the_prompts.prompt_stack[the_prompts.top + X].suffix
76 /* Default command line prompt. This is overriden in some configs. */
78 #ifndef DEFAULT_PROMPT
79 #define DEFAULT_PROMPT "(gdb) "
82 /* Initialization file name for gdb. This is host-dependent. */
84 const char gdbinit
[] = GDBINIT
;
86 int inhibit_gdbinit
= 0;
88 extern char lang_frame_mismatch_warn
[]; /* language.c */
90 /* Flag for whether we want to confirm potentially dangerous
91 operations. Default is yes. */
96 show_confirm (struct ui_file
*file
, int from_tty
,
97 struct cmd_list_element
*c
, const char *value
)
99 fprintf_filtered (file
, _("Whether to confirm potentially "
100 "dangerous operations is %s.\n"),
104 /* stdio stream that command input is being read from. Set to stdin
105 normally. Set by source_command to the file we are sourcing. Set
106 to NULL if we are executing a user-defined command or interacting
111 /* Flag to indicate whether a user defined command is currently running. */
115 /* Current working directory. */
117 char *current_directory
;
119 /* The directory name is actually stored here (usually). */
120 char gdb_dirbuf
[1024];
122 /* Function to call before reading a command, if nonzero.
123 The function receives two args: an input stream,
124 and a prompt string. */
126 void (*window_hook
) (FILE *, char *);
128 /* Buffer used for reading command lines, and the size
129 allocated for it so far. */
131 char *saved_command_line
;
132 int saved_command_line_size
= 100;
134 /* Nonzero if the current command is modified by "server ". This
135 affects things like recording into the command history, commands
136 repeating on RETURN, etc. This is so a user interface (emacs, GUI,
137 whatever) can issue its own commands and also send along commands
138 from the user, and have the user not notice that the user interface
139 is issuing commands too. */
142 /* Timeout limit for response from target. */
144 /* The default value has been changed many times over the years. It
145 was originally 5 seconds. But that was thought to be a long time
146 to sit and wait, so it was changed to 2 seconds. That was thought
147 to be plenty unless the connection was going through some terminal
148 server or multiplexer or other form of hairy serial connection.
150 In mid-1996, remote_timeout was moved from remote.c to top.c and
151 it began being used in other remote-* targets. It appears that the
152 default was changed to 20 seconds at that time, perhaps because the
153 Renesas E7000 ICE didn't always respond in a timely manner.
155 But if 5 seconds is a long time to sit and wait for retransmissions,
156 20 seconds is far worse. This demonstrates the difficulty of using
157 a single variable for all protocol timeouts.
159 As remote.c is used much more than remote-e7000.c, it was changed
160 back to 2 seconds in 1999. */
162 int remote_timeout
= 2;
164 /* Non-zero tells remote* modules to output debugging info. */
166 int remote_debug
= 0;
168 /* Sbrk location on entry to main. Used for statistics only. */
173 /* Hooks for alternate command interfaces. */
175 /* Called after most modules have been initialized, but before taking
178 If the UI fails to initialize and it wants GDB to continue using
179 the default UI, then it should clear this hook before returning. */
181 void (*deprecated_init_ui_hook
) (char *argv0
);
183 /* This hook is called from within gdb's many mini-event loops which
184 could steal control from a real user interface's event loop. It
185 returns non-zero if the user is requesting a detach, zero
188 int (*deprecated_ui_loop_hook
) (int);
191 /* Called from print_frame_info to list the line we stopped in. */
193 void (*deprecated_print_frame_info_listing_hook
) (struct symtab
* s
,
197 /* Replaces most of query. */
199 int (*deprecated_query_hook
) (const char *, va_list);
201 /* Replaces most of warning. */
203 void (*deprecated_warning_hook
) (const char *, va_list);
205 /* These three functions support getting lines of text from the user.
206 They are used in sequence. First deprecated_readline_begin_hook is
207 called with a text string that might be (for example) a message for
208 the user to type in a sequence of commands to be executed at a
209 breakpoint. If this function calls back to a GUI, it might take
210 this opportunity to pop up a text interaction window with this
211 message. Next, deprecated_readline_hook is called with a prompt
212 that is emitted prior to collecting the user input. It can be
213 called multiple times. Finally, deprecated_readline_end_hook is
214 called to notify the GUI that we are done with the interaction
215 window and it can close it. */
217 void (*deprecated_readline_begin_hook
) (char *, ...);
218 char *(*deprecated_readline_hook
) (char *);
219 void (*deprecated_readline_end_hook
) (void);
221 /* Called as appropriate to notify the interface that we have attached
222 to or detached from an already running process. */
224 void (*deprecated_attach_hook
) (void);
225 void (*deprecated_detach_hook
) (void);
227 /* Called during long calculations to allow GUI to repair window
228 damage, and to check for stop buttons, etc... */
230 void (*deprecated_interactive_hook
) (void);
232 /* Tell the GUI someone changed the register REGNO. -1 means
233 that the caller does not know which register changed or
234 that several registers have changed (see value_assign). */
235 void (*deprecated_register_changed_hook
) (int regno
);
237 /* Called when going to wait for the target. Usually allows the GUI
238 to run while waiting for target events. */
240 ptid_t (*deprecated_target_wait_hook
) (ptid_t ptid
,
241 struct target_waitstatus
*status
,
244 /* Used by UI as a wrapper around command execution. May do various
245 things like enabling/disabling buttons, etc... */
247 void (*deprecated_call_command_hook
) (struct cmd_list_element
* c
,
248 char *cmd
, int from_tty
);
250 /* Called when the current thread changes. Argument is thread id. */
252 void (*deprecated_context_hook
) (int id
);
254 /* Handler for SIGHUP. */
257 /* NOTE 1999-04-29: This function will be static again, once we modify
258 gdb to use the event loop as the default command loop and we merge
259 event-top.c into this file, top.c. */
263 /* Stop asking user for confirmation --- we're exiting. This
264 prevents asking the user dumb questions. */
266 quit_command ((char *) 0, 0);
268 #endif /* defined SIGHUP */
270 /* Line number we are currently in, in a file which is being sourced. */
271 /* NOTE 1999-04-29: This variable will be static again, once we modify
272 gdb to use the event loop as the default command loop and we merge
273 event-top.c into this file, top.c. */
274 /* static */ int source_line_number
;
276 /* Name of the file we are sourcing. */
277 /* NOTE 1999-04-29: This variable will be static again, once we modify
278 gdb to use the event loop as the default command loop and we merge
279 event-top.c into this file, top.c. */
280 /* static */ const char *source_file_name
;
282 /* Clean up on error during a "source" command (or execution of a
283 user-defined command). */
286 do_restore_instream_cleanup (void *stream
)
288 /* Restore the previous input stream. */
292 /* Read commands from STREAM. */
294 read_command_file (FILE *stream
)
296 struct cleanup
*cleanups
;
298 cleanups
= make_cleanup (do_restore_instream_cleanup
, instream
);
301 do_cleanups (cleanups
);
304 void (*pre_init_ui_hook
) (void);
308 do_chdir_cleanup (void *old_dir
)
316 prepare_execute_command (void)
319 struct cleanup
*cleanup
;
321 mark
= value_mark ();
322 cleanup
= make_cleanup_value_free_to_mark (mark
);
324 /* With multiple threads running while the one we're examining is
325 stopped, the dcache can get stale without us being able to detect
326 it. For the duration of the command, though, use the dcache to
327 help things like backtrace. */
329 target_dcache_invalidate ();
334 /* Tell the user if the language has changed (except first time) after
335 executing a command. */
338 check_frame_language_change (void)
340 static int warned
= 0;
342 /* First make sure that a new frame has been selected, in case the
343 command or the hooks changed the program state. */
344 deprecated_safe_get_selected_frame ();
345 if (current_language
!= expected_language
)
347 if (language_mode
== language_mode_auto
&& info_verbose
)
349 language_info (1); /* Print what changed. */
354 /* Warn the user if the working language does not match the language
355 of the current frame. Only warn the user if we are actually
356 running the program, i.e. there is a stack. */
357 /* FIXME: This should be cacheing the frame and only running when
358 the frame changes. */
360 if (has_stack_frames ())
364 flang
= get_frame_language ();
366 && flang
!= language_unknown
367 && flang
!= current_language
->la_language
)
369 printf_filtered ("%s\n", lang_frame_mismatch_warn
);
378 maybe_wait_sync_command_done (int was_sync
)
380 /* If the interpreter is in sync mode (we're running a user
381 command's list, running command hooks or similars), and we
382 just ran a synchronous command that started the target, wait
383 for that command to end. */
384 if (!interpreter_async
&& !was_sync
&& sync_execution
)
386 while (gdb_do_one_event () >= 0)
392 /* Execute the line P as a command, in the current user context.
393 Pass FROM_TTY as second argument to the defining function. */
396 execute_command (char *p
, int from_tty
)
398 struct cleanup
*cleanup_if_error
, *cleanup
;
399 struct cmd_list_element
*c
;
402 cleanup_if_error
= make_bpstat_clear_actions_cleanup ();
403 cleanup
= prepare_execute_command ();
405 /* Force cleanup of any alloca areas if using C alloca instead of
409 /* This can happen when command_line_input hits end of file. */
412 do_cleanups (cleanup
);
413 discard_cleanups (cleanup_if_error
);
417 target_log_command (p
);
419 while (*p
== ' ' || *p
== '\t')
425 int was_sync
= sync_execution
;
429 /* If trace-commands is set then this will print this command. */
430 print_command_trace (p
);
432 c
= lookup_cmd (&cmd
, cmdlist
, "", 0, 1);
435 /* Pass null arg rather than an empty one. */
438 /* FIXME: cagney/2002-02-02: The c->type test is pretty dodgy
439 while the is_complete_command(cfunc) test is just plain
440 bogus. They should both be replaced by a test of the form
441 c->strip_trailing_white_space_p. */
442 /* NOTE: cagney/2002-02-02: The function.cfunc in the below
443 can't be replaced with func. This is because it is the
444 cfunc, and not the func, that has the value that the
445 is_complete_command hack is testing for. */
446 /* Clear off trailing whitespace, except for set and complete
449 && c
->type
!= set_cmd
450 && !is_complete_command (c
))
452 p
= arg
+ strlen (arg
) - 1;
453 while (p
>= arg
&& (*p
== ' ' || *p
== '\t'))
458 /* If this command has been pre-hooked, run the hook first. */
459 execute_cmd_pre_hook (c
);
461 if (c
->deprecated_warn_user
)
462 deprecated_cmd_warning (line
);
464 /* c->user_commands would be NULL in the case of a python command. */
465 if (c
->class == class_user
&& c
->user_commands
)
466 execute_user_command (c
, arg
);
467 else if (c
->type
== set_cmd
)
468 do_set_command (arg
, from_tty
, c
);
469 else if (c
->type
== show_cmd
)
470 do_show_command (arg
, from_tty
, c
);
471 else if (!cmd_func_p (c
))
472 error (_("That is not a command, just a help topic."));
473 else if (deprecated_call_command_hook
)
474 deprecated_call_command_hook (c
, arg
, from_tty
);
476 cmd_func (c
, arg
, from_tty
);
478 maybe_wait_sync_command_done (was_sync
);
480 /* If this command has been post-hooked, run the hook last. */
481 execute_cmd_post_hook (c
);
485 check_frame_language_change ();
487 do_cleanups (cleanup
);
488 discard_cleanups (cleanup_if_error
);
491 /* Run execute_command for P and FROM_TTY. Capture its output into the
492 returned string, do not display it to the screen. BATCH_FLAG will be
493 temporarily set to true. */
496 execute_command_to_string (char *p
, int from_tty
)
498 struct ui_file
*str_file
;
499 struct cleanup
*cleanup
;
502 /* GDB_STDOUT should be better already restored during these
503 restoration callbacks. */
504 cleanup
= set_batch_flag_and_make_cleanup_restore_page_info ();
506 make_cleanup_restore_integer (&interpreter_async
);
507 interpreter_async
= 0;
509 str_file
= mem_fileopen ();
511 make_cleanup_ui_file_delete (str_file
);
512 make_cleanup_restore_ui_file (&gdb_stdout
);
513 make_cleanup_restore_ui_file (&gdb_stderr
);
514 make_cleanup_restore_ui_file (&gdb_stdlog
);
515 make_cleanup_restore_ui_file (&gdb_stdtarg
);
516 make_cleanup_restore_ui_file (&gdb_stdtargerr
);
518 if (ui_out_redirect (current_uiout
, str_file
) < 0)
519 warning (_("Current output protocol does not support redirection"));
521 make_cleanup_ui_out_redirect_pop (current_uiout
);
523 gdb_stdout
= str_file
;
524 gdb_stderr
= str_file
;
525 gdb_stdlog
= str_file
;
526 gdb_stdtarg
= str_file
;
527 gdb_stdtargerr
= str_file
;
529 execute_command (p
, from_tty
);
531 retval
= ui_file_xstrdup (str_file
, NULL
);
533 do_cleanups (cleanup
);
538 /* Read commands from `instream' and execute them
539 until end of file or error reading instream. */
544 struct cleanup
*old_chain
;
546 int stdin_is_tty
= ISATTY (stdin
);
548 while (instream
&& !feof (instream
))
550 if (window_hook
&& instream
== stdin
)
551 (*window_hook
) (instream
, get_prompt ());
554 if (instream
== stdin
&& stdin_is_tty
)
555 reinitialize_more_filter ();
556 old_chain
= make_cleanup (null_cleanup
, 0);
558 /* Get a command-line. This calls the readline package. */
559 command
= command_line_input (instream
== stdin
?
560 get_prompt () : (char *) NULL
,
561 instream
== stdin
, "prompt");
564 do_cleanups (old_chain
);
568 make_command_stats_cleanup (1);
570 /* Do not execute commented lines. */
571 if (command
[0] != '#')
573 execute_command (command
, instream
== stdin
);
575 /* Do any commands attached to breakpoint we are stopped at. */
576 bpstat_do_actions ();
578 do_cleanups (old_chain
);
582 /* When nonzero, cause dont_repeat to do nothing. This should only be
583 set via prevent_dont_repeat. */
585 static int suppress_dont_repeat
= 0;
587 /* Commands call this if they do not want to be repeated by null lines. */
592 if (suppress_dont_repeat
|| server_command
)
595 /* If we aren't reading from standard input, we are saving the last
596 thing read from stdin in line and don't want to delete it. Null
597 lines won't repeat here in any case. */
598 if (instream
== stdin
)
599 *saved_command_line
= 0;
602 /* Prevent dont_repeat from working, and return a cleanup that
603 restores the previous state. */
606 prevent_dont_repeat (void)
608 struct cleanup
*result
= make_cleanup_restore_integer (&suppress_dont_repeat
);
610 suppress_dont_repeat
= 1;
615 /* Read a line from the stream "instream" without command line editing.
617 It prints PROMPT_ARG once at the start.
618 Action is compatible with "readline", e.g. space for the result is
619 malloc'd and should be freed by the caller.
621 A NULL return means end of file. */
623 gdb_readline (char *prompt_arg
)
628 int result_size
= 80;
632 /* Don't use a _filtered function here. It causes the assumed
633 character position to be off, since the newline we read from
634 the user is not accounted for. */
635 fputs_unfiltered (prompt_arg
, gdb_stdout
);
636 gdb_flush (gdb_stdout
);
639 result
= (char *) xmalloc (result_size
);
643 /* Read from stdin if we are executing a user defined command.
644 This is the right thing for prompt_for_continue, at least. */
645 c
= fgetc (instream
? instream
: stdin
);
650 /* The last line does not end with a newline. Return it, and
651 if we are called again fgetc will still return EOF and
652 we'll return NULL then. */
660 if (input_index
> 0 && result
[input_index
- 1] == '\r')
665 result
[input_index
++] = c
;
666 while (input_index
>= result_size
)
669 result
= (char *) xrealloc (result
, result_size
);
673 result
[input_index
++] = '\0';
677 /* Variables which control command line editing and history
678 substitution. These variables are given default values at the end
680 static int command_editing_p
;
682 /* NOTE 1999-04-29: This variable will be static again, once we modify
683 gdb to use the event loop as the default command loop and we merge
684 event-top.c into this file, top.c. */
686 /* static */ int history_expansion_p
;
688 static int write_history_p
;
690 show_write_history_p (struct ui_file
*file
, int from_tty
,
691 struct cmd_list_element
*c
, const char *value
)
693 fprintf_filtered (file
, _("Saving of the history record on exit is %s.\n"),
697 /* The variable associated with the "set/show history size"
699 static unsigned int history_size_setshow_var
;
702 show_history_size (struct ui_file
*file
, int from_tty
,
703 struct cmd_list_element
*c
, const char *value
)
705 fprintf_filtered (file
, _("The size of the command history is %s.\n"),
709 static char *history_filename
;
711 show_history_filename (struct ui_file
*file
, int from_tty
,
712 struct cmd_list_element
*c
, const char *value
)
714 fprintf_filtered (file
, _("The filename in which to record "
715 "the command history is \"%s\".\n"),
719 /* This is like readline(), but it has some gdb-specific behavior.
720 gdb may want readline in both the synchronous and async modes during
721 a single gdb invocation. At the ordinary top-level prompt we might
722 be using the async readline. That means we can't use
723 rl_pre_input_hook, since it doesn't work properly in async mode.
724 However, for a secondary prompt (" >", such as occurs during a
725 `define'), gdb wants a synchronous response.
727 We used to call readline() directly, running it in synchronous
728 mode. But mixing modes this way is not supported, and as of
729 readline 5.x it no longer works; the arrow keys come unbound during
730 the synchronous call. So we make a nested call into the event
731 loop. That's what gdb_readline_wrapper is for. */
733 /* A flag set as soon as gdb_readline_wrapper_line is called; we can't
734 rely on gdb_readline_wrapper_result, which might still be NULL if
735 the user types Control-D for EOF. */
736 static int gdb_readline_wrapper_done
;
738 /* The result of the current call to gdb_readline_wrapper, once a newline
740 static char *gdb_readline_wrapper_result
;
742 /* Any intercepted hook. Operate-and-get-next sets this, expecting it
743 to be called after the newline is processed (which will redisplay
744 the prompt). But in gdb_readline_wrapper we will not get a new
745 prompt until the next call, or until we return to the event loop.
746 So we disable this hook around the newline and restore it before we
748 static void (*saved_after_char_processing_hook
) (void);
750 /* This function is called when readline has seen a complete line of
754 gdb_readline_wrapper_line (char *line
)
756 gdb_assert (!gdb_readline_wrapper_done
);
757 gdb_readline_wrapper_result
= line
;
758 gdb_readline_wrapper_done
= 1;
760 /* Prevent operate-and-get-next from acting too early. */
761 saved_after_char_processing_hook
= after_char_processing_hook
;
762 after_char_processing_hook
= NULL
;
764 /* Prevent parts of the prompt from being redisplayed if annotations
765 are enabled, and readline's state getting out of sync. We'll
766 reinstall the callback handler, which puts the terminal in raw
767 mode (or in readline lingo, in prepped state), when we're next
768 ready to process user input, either in display_gdb_prompt, or if
769 we're handling an asynchronous target event and running in the
770 background, just before returning to the event loop to process
771 further input (or more target events). */
772 if (async_command_editing_p
)
773 gdb_rl_callback_handler_remove ();
776 struct gdb_readline_wrapper_cleanup
778 void (*handler_orig
) (char *);
779 int already_prompted_orig
;
781 /* Whether the target was async. */
782 int target_is_async_orig
;
786 gdb_readline_wrapper_cleanup (void *arg
)
788 struct gdb_readline_wrapper_cleanup
*cleanup
= arg
;
790 rl_already_prompted
= cleanup
->already_prompted_orig
;
792 gdb_assert (input_handler
== gdb_readline_wrapper_line
);
793 input_handler
= cleanup
->handler_orig
;
795 /* Don't restore our input handler in readline yet. That would make
796 readline prep the terminal (putting it in raw mode), while the
797 line we just read may trigger execution of a command that expects
798 the terminal in the default cooked/canonical mode, such as e.g.,
799 running Python's interactive online help utility. See
800 gdb_readline_wrapper_line for when we'll reinstall it. */
802 gdb_readline_wrapper_result
= NULL
;
803 gdb_readline_wrapper_done
= 0;
805 after_char_processing_hook
= saved_after_char_processing_hook
;
806 saved_after_char_processing_hook
= NULL
;
808 if (cleanup
->target_is_async_orig
)
809 target_async (inferior_event_handler
, 0);
815 gdb_readline_wrapper (char *prompt
)
817 struct cleanup
*back_to
;
818 struct gdb_readline_wrapper_cleanup
*cleanup
;
821 cleanup
= xmalloc (sizeof (*cleanup
));
822 cleanup
->handler_orig
= input_handler
;
823 input_handler
= gdb_readline_wrapper_line
;
825 cleanup
->already_prompted_orig
= rl_already_prompted
;
827 cleanup
->target_is_async_orig
= target_is_async_p ();
829 back_to
= make_cleanup (gdb_readline_wrapper_cleanup
, cleanup
);
831 if (cleanup
->target_is_async_orig
)
832 target_async (NULL
, NULL
);
834 /* Display our prompt and prevent double prompt display. */
835 display_gdb_prompt (prompt
);
836 rl_already_prompted
= 1;
838 if (after_char_processing_hook
)
839 (*after_char_processing_hook
) ();
840 gdb_assert (after_char_processing_hook
== NULL
);
842 while (gdb_do_one_event () >= 0)
843 if (gdb_readline_wrapper_done
)
846 retval
= gdb_readline_wrapper_result
;
847 do_cleanups (back_to
);
852 /* The current saved history number from operate-and-get-next.
853 This is -1 if not valid. */
854 static int operate_saved_history
= -1;
856 /* This is put on the appropriate hook and helps operate-and-get-next
859 gdb_rl_operate_and_get_next_completion (void)
861 int delta
= where_history () - operate_saved_history
;
863 /* The `key' argument to rl_get_previous_history is ignored. */
864 rl_get_previous_history (delta
, 0);
865 operate_saved_history
= -1;
867 /* readline doesn't automatically update the display for us. */
870 after_char_processing_hook
= NULL
;
871 rl_pre_input_hook
= NULL
;
874 /* This is a gdb-local readline command handler. It accepts the
875 current command line (like RET does) and, if this command was taken
876 from the history, arranges for the next command in the history to
877 appear on the command line when the prompt returns.
878 We ignore the arguments. */
880 gdb_rl_operate_and_get_next (int count
, int key
)
884 /* Use the async hook. */
885 after_char_processing_hook
= gdb_rl_operate_and_get_next_completion
;
887 /* Find the current line, and find the next line to use. */
888 where
= where_history();
890 if ((history_is_stifled () && (history_length
>= history_max_entries
))
891 || (where
>= history_length
- 1))
892 operate_saved_history
= where
;
894 operate_saved_history
= where
+ 1;
896 return rl_newline (1, key
);
899 /* Read one line from the command input stream `instream'
900 into the local static buffer `linebuffer' (whose current length
902 The buffer is made bigger as necessary.
903 Returns the address of the start of the line.
905 NULL is returned for end of file.
907 *If* the instream == stdin & stdin is a terminal, the line read
908 is copied into the file line saver (global var char *line,
909 length linesize) so that it can be duplicated.
911 This routine either uses fancy command line editing or
912 simple input as the user has requested. */
915 command_line_input (char *prompt_arg
, int repeat
, char *annotation_suffix
)
917 static char *linebuffer
= 0;
918 static unsigned linelength
= 0;
922 char *local_prompt
= prompt_arg
;
926 /* The annotation suffix must be non-NULL. */
927 if (annotation_suffix
== NULL
)
928 annotation_suffix
= "";
930 if (annotation_level
> 1 && instream
== stdin
)
932 local_prompt
= alloca ((prompt_arg
== NULL
? 0 : strlen (prompt_arg
))
933 + strlen (annotation_suffix
) + 40);
934 if (prompt_arg
== NULL
)
935 local_prompt
[0] = '\0';
937 strcpy (local_prompt
, prompt_arg
);
938 strcat (local_prompt
, "\n\032\032");
939 strcat (local_prompt
, annotation_suffix
);
940 strcat (local_prompt
, "\n");
946 linebuffer
= (char *) xmalloc (linelength
);
951 /* Control-C quits instantly if typed while in this loop
952 since it should not wait until the user types a newline. */
957 signal (STOP_SIGNAL
, handle_stop_sig
);
962 /* Make sure that all output has been output. Some machines may
963 let you get away with leaving out some of the gdb_flush, but
966 gdb_flush (gdb_stdout
);
967 gdb_flush (gdb_stderr
);
969 if (source_file_name
!= NULL
)
970 ++source_line_number
;
972 if (annotation_level
> 1 && instream
== stdin
)
974 puts_unfiltered ("\n\032\032pre-");
975 puts_unfiltered (annotation_suffix
);
976 puts_unfiltered ("\n");
979 /* Don't use fancy stuff if not talking to stdin. */
980 if (deprecated_readline_hook
&& input_from_terminal_p ())
982 rl
= (*deprecated_readline_hook
) (local_prompt
);
984 else if (command_editing_p
&& input_from_terminal_p ())
986 rl
= gdb_readline_wrapper (local_prompt
);
990 rl
= gdb_readline (local_prompt
);
993 if (annotation_level
> 1 && instream
== stdin
)
995 puts_unfiltered ("\n\032\032post-");
996 puts_unfiltered (annotation_suffix
);
997 puts_unfiltered ("\n");
1000 if (!rl
|| rl
== (char *) EOF
)
1005 if (strlen (rl
) + 1 + (p
- linebuffer
) > linelength
)
1007 linelength
= strlen (rl
) + 1 + (p
- linebuffer
);
1008 nline
= (char *) xrealloc (linebuffer
, linelength
);
1009 p
+= nline
- linebuffer
;
1013 /* Copy line. Don't copy null at end. (Leaves line alone
1014 if this was just a newline). */
1018 xfree (rl
); /* Allocated in readline. */
1020 if (p
== linebuffer
|| *(p
- 1) != '\\')
1023 p
--; /* Put on top of '\'. */
1024 local_prompt
= (char *) 0;
1029 signal (STOP_SIGNAL
, SIG_DFL
);
1036 #define SERVER_COMMAND_LENGTH 7
1038 (p
- linebuffer
> SERVER_COMMAND_LENGTH
)
1039 && strncmp (linebuffer
, "server ", SERVER_COMMAND_LENGTH
) == 0;
1042 /* Note that we don't set `line'. Between this and the check in
1043 dont_repeat, this insures that repeating will still do the
1046 return linebuffer
+ SERVER_COMMAND_LENGTH
;
1049 /* Do history expansion if that is wished. */
1050 if (history_expansion_p
&& instream
== stdin
1051 && ISATTY (instream
))
1053 char *history_value
;
1056 *p
= '\0'; /* Insert null now. */
1057 expanded
= history_expand (linebuffer
, &history_value
);
1060 /* Print the changes. */
1061 printf_unfiltered ("%s\n", history_value
);
1063 /* If there was an error, call this function again. */
1066 xfree (history_value
);
1067 return command_line_input (prompt_arg
, repeat
,
1070 if (strlen (history_value
) > linelength
)
1072 linelength
= strlen (history_value
) + 1;
1073 linebuffer
= (char *) xrealloc (linebuffer
, linelength
);
1075 strcpy (linebuffer
, history_value
);
1076 p
= linebuffer
+ strlen (linebuffer
);
1078 xfree (history_value
);
1081 /* If we just got an empty line, and that is supposed to repeat the
1082 previous command, return the value in the global buffer. */
1083 if (repeat
&& p
== linebuffer
)
1084 return saved_command_line
;
1085 for (p1
= linebuffer
; *p1
== ' ' || *p1
== '\t'; p1
++);
1087 return saved_command_line
;
1091 /* Add line to history if appropriate. */
1092 if (*linebuffer
&& input_from_terminal_p ())
1093 add_history (linebuffer
);
1095 /* Save into global buffer if appropriate. */
1098 if (linelength
> saved_command_line_size
)
1100 saved_command_line
= xrealloc (saved_command_line
, linelength
);
1101 saved_command_line_size
= linelength
;
1103 strcpy (saved_command_line
, linebuffer
);
1104 return saved_command_line
;
1110 /* Print the GDB banner. */
1112 print_gdb_version (struct ui_file
*stream
)
1114 /* From GNU coding standards, first line is meant to be easy for a
1115 program to parse, and is just canonical program name and version
1116 number, which starts after last space. */
1118 fprintf_filtered (stream
, "GNU gdb %s%s\n", PKGVERSION
, version
);
1120 /* Second line is a copyright notice. */
1122 fprintf_filtered (stream
,
1123 "Copyright (C) 2014 Free Software Foundation, Inc.\n");
1125 /* Following the copyright is a brief statement that the program is
1126 free software, that users are free to copy and change it on
1127 certain conditions, that it is covered by the GNU GPL, and that
1128 there is no warranty. */
1130 fprintf_filtered (stream
, "\
1131 License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>\
1132 \nThis is free software: you are free to change and redistribute it.\n\
1133 There is NO WARRANTY, to the extent permitted by law. Type \"show copying\"\n\
1134 and \"show warranty\" for details.\n");
1136 /* After the required info we print the configuration information. */
1138 fprintf_filtered (stream
, "This GDB was configured as \"");
1139 if (strcmp (host_name
, target_name
) != 0)
1141 fprintf_filtered (stream
, "--host=%s --target=%s",
1142 host_name
, target_name
);
1146 fprintf_filtered (stream
, "%s", host_name
);
1148 fprintf_filtered (stream
, "\".\n\
1149 Type \"show configuration\" for configuration details.");
1151 if (REPORT_BUGS_TO
[0])
1153 fprintf_filtered (stream
,
1154 _("\nFor bug reporting instructions, please see:\n"));
1155 fprintf_filtered (stream
, "%s.\n", REPORT_BUGS_TO
);
1157 fprintf_filtered (stream
,
1158 _("Find the GDB manual and other documentation \
1159 resources online at:\n<http://www.gnu.org/software/gdb/documentation/>.\n"));
1160 fprintf_filtered (stream
, _("For help, type \"help\".\n"));
1161 fprintf_filtered (stream
, _("Type \"apropos word\" to search for \
1162 commands related to \"word\"."));
1165 /* Print the details of GDB build-time configuration. */
1167 print_gdb_configuration (struct ui_file
*stream
)
1169 fprintf_filtered (stream
, _("\
1170 This GDB was configured as follows:\n\
1171 configure --host=%s --target=%s\n\
1172 "), host_name
, target_name
);
1173 fprintf_filtered (stream
, _("\
1174 --with-auto-load-dir=%s\n\
1175 --with-auto-load-safe-path=%s\n\
1176 "), AUTO_LOAD_DIR
, AUTO_LOAD_SAFE_PATH
);
1178 fprintf_filtered (stream
, _("\
1182 fprintf_filtered (stream
, _("\
1187 fprintf_filtered (stream
, _("\
1188 --with-gdb-datadir=%s%s\n\
1189 "), GDB_DATADIR
, GDB_DATADIR_RELOCATABLE
? " (relocatable)" : "");
1191 fprintf_filtered (stream
, _("\
1192 --with-iconv-bin=%s%s\n\
1193 "), ICONV_BIN
, ICONV_BIN_RELOCATABLE
? " (relocatable)" : "");
1195 if (JIT_READER_DIR
[0])
1196 fprintf_filtered (stream
, _("\
1197 --with-jit-reader-dir=%s%s\n\
1198 "), JIT_READER_DIR
, JIT_READER_DIR_RELOCATABLE
? " (relocatable)" : "");
1199 #if HAVE_LIBUNWIND_IA64_H
1200 fprintf_filtered (stream
, _("\
1201 --with-libunwind-ia64\n\
1204 fprintf_filtered (stream
, _("\
1205 --without-libunwind-ia64\n\
1209 fprintf_filtered (stream
, _("\
1213 fprintf_filtered (stream
, _("\
1217 #ifdef WITH_PYTHON_PATH
1218 fprintf_filtered (stream
, _("\
1219 --with-python=%s%s\n\
1220 "), WITH_PYTHON_PATH
, PYTHON_PATH_RELOCATABLE
? " (relocatable)" : "");
1223 fprintf_filtered (stream
, _("\
1227 fprintf_filtered (stream
, _("\
1232 fprintf_filtered (stream
, _("\
1233 --with-relocated-sources=%s\n\
1237 fprintf_filtered (stream
, _("\
1238 --with-separate-debug-dir=%s%s\n\
1239 "), DEBUGDIR
, DEBUGDIR_RELOCATABLE
? " (relocatable)" : "");
1240 if (TARGET_SYSTEM_ROOT
[0])
1241 fprintf_filtered (stream
, _("\
1242 --with-sysroot=%s%s\n\
1243 "), TARGET_SYSTEM_ROOT
, TARGET_SYSTEM_ROOT_RELOCATABLE
? " (relocatable)" : "");
1244 if (SYSTEM_GDBINIT
[0])
1245 fprintf_filtered (stream
, _("\
1246 --with-system-gdbinit=%s%s\n\
1247 "), SYSTEM_GDBINIT
, SYSTEM_GDBINIT_RELOCATABLE
? " (relocatable)" : "");
1249 fprintf_filtered (stream
, _("\
1253 fprintf_filtered (stream
, _("\
1257 #if HAVE_LIBBABELTRACE
1258 fprintf_filtered (stream
, _("\
1259 --with-babeltrace\n\
1262 fprintf_filtered (stream
, _("\
1263 --without-babeltrace\n\
1266 /* We assume "relocatable" will be printed at least once, thus we always
1267 print this text. It's a reasonably safe assumption for now. */
1268 fprintf_filtered (stream
, _("\n\
1269 (\"Relocatable\" means the directory can be moved with the GDB installation\n\
1270 tree, and GDB will still find it.)\n\
1275 /* The current top level prompt, settable with "set prompt", and/or
1276 with the python `gdb.prompt_hook' hook. */
1277 static char *top_prompt
;
1279 /* Access method for the GDB prompt string. */
1287 /* Set method for the GDB prompt string. */
1290 set_prompt (const char *s
)
1292 char *p
= xstrdup (s
);
1305 /* Callback for iterate_over_inferiors. Kills or detaches the given
1306 inferior, depending on how we originally gained control of it. */
1309 kill_or_detach (struct inferior
*inf
, void *args
)
1311 struct qt_args
*qt
= args
;
1312 struct thread_info
*thread
;
1317 thread
= any_thread_of_process (inf
->pid
);
1320 switch_to_thread (thread
->ptid
);
1322 /* Leave core files alone. */
1323 if (target_has_execution
)
1325 if (inf
->attach_flag
)
1326 target_detach (qt
->args
, qt
->from_tty
);
1335 /* Callback for iterate_over_inferiors. Prints info about what GDB
1336 will do to each inferior on a "quit". ARG points to a struct
1337 ui_out where output is to be collected. */
1340 print_inferior_quit_action (struct inferior
*inf
, void *arg
)
1342 struct ui_file
*stb
= arg
;
1347 if (inf
->attach_flag
)
1348 fprintf_filtered (stb
,
1349 _("\tInferior %d [%s] will be detached.\n"), inf
->num
,
1350 target_pid_to_str (pid_to_ptid (inf
->pid
)));
1352 fprintf_filtered (stb
,
1353 _("\tInferior %d [%s] will be killed.\n"), inf
->num
,
1354 target_pid_to_str (pid_to_ptid (inf
->pid
)));
1359 /* If necessary, make the user confirm that we should quit. Return
1360 non-zero if we should quit, zero if we shouldn't. */
1365 struct ui_file
*stb
;
1366 struct cleanup
*old_chain
;
1370 /* Don't even ask if we're only debugging a core file inferior. */
1371 if (!have_live_inferiors ())
1374 /* Build the query string as a single string. */
1375 stb
= mem_fileopen ();
1376 old_chain
= make_cleanup_ui_file_delete (stb
);
1378 fprintf_filtered (stb
, _("A debugging session is active.\n\n"));
1379 iterate_over_inferiors (print_inferior_quit_action
, stb
);
1380 fprintf_filtered (stb
, _("\nQuit anyway? "));
1382 str
= ui_file_xstrdup (stb
, NULL
);
1383 make_cleanup (xfree
, str
);
1385 qr
= query ("%s", str
);
1386 do_cleanups (old_chain
);
1390 /* Quit without asking for confirmation. */
1393 quit_force (char *args
, int from_tty
)
1397 volatile struct gdb_exception ex
;
1399 /* An optional expression may be used to cause gdb to terminate with the
1400 value of that expression. */
1403 struct value
*val
= parse_and_eval (args
);
1405 exit_code
= (int) value_as_long (val
);
1407 else if (return_child_result
)
1408 exit_code
= return_child_result_value
;
1411 qt
.from_tty
= from_tty
;
1413 /* Wrappers to make the code below a bit more readable. */
1415 TRY_CATCH (ex, RETURN_MASK_ALL)
1417 #define DO_PRINT_EX \
1418 if (ex.reason < 0) \
1419 exception_print (gdb_stderr, ex)
1421 /* We want to handle any quit errors and exit regardless. */
1423 /* Get out of tfind mode, and kill or detach all inferiors. */
1426 disconnect_tracing ();
1427 iterate_over_inferiors (kill_or_detach
, &qt
);
1431 /* Give all pushed targets a chance to do minimal cleanup, and pop
1439 /* Save the history information if it is appropriate to do so. */
1442 if (write_history_p
&& history_filename
1443 && input_from_terminal_p ())
1444 write_history (history_filename
);
1448 /* Do any final cleanups before exiting. */
1451 do_final_cleanups (all_cleanups ());
1458 /* Returns whether GDB is running on a terminal and input is
1459 currently coming from that terminal. */
1462 input_from_terminal_p (void)
1467 if (gdb_has_a_terminal () && instream
== stdin
)
1470 /* If INSTREAM is unset, and we are not in a user command, we
1471 must be in Insight. That's like having a terminal, for our
1473 if (instream
== NULL
&& !in_user_command
)
1480 dont_repeat_command (char *ignored
, int from_tty
)
1482 /* Can't call dont_repeat here because we're not necessarily reading
1484 *saved_command_line
= 0;
1487 /* Functions to manipulate command line editing control variables. */
1489 /* Number of commands to print in each call to show_commands. */
1490 #define Hist_print 10
1492 show_commands (char *args
, int from_tty
)
1494 /* Index for history commands. Relative to history_base. */
1497 /* Number of the history entry which we are planning to display next.
1498 Relative to history_base. */
1501 /* Print out some of the commands from the command history. */
1505 if (args
[0] == '+' && args
[1] == '\0')
1506 /* "info editing +" should print from the stored position. */
1509 /* "info editing <exp>" should print around command number <exp>. */
1510 num
= (parse_and_eval_long (args
) - history_base
) - Hist_print
/ 2;
1512 /* "show commands" means print the last Hist_print commands. */
1515 num
= history_length
- Hist_print
;
1521 /* If there are at least Hist_print commands, we want to display the last
1522 Hist_print rather than, say, the last 6. */
1523 if (history_length
- num
< Hist_print
)
1525 num
= history_length
- Hist_print
;
1531 offset
< num
+ Hist_print
&& offset
< history_length
;
1534 printf_filtered ("%5d %s\n", history_base
+ offset
,
1535 (history_get (history_base
+ offset
))->line
);
1538 /* The next command we want to display is the next one that we haven't
1542 /* If the user repeats this command with return, it should do what
1543 "show commands +" does. This is unnecessary if arg is null,
1544 because "show commands +" is not useful after "show commands". */
1545 if (from_tty
&& args
)
1552 /* Called by do_setshow_command. */
1554 set_history_size_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
1556 /* Readline's history interface works with 'int', so it can only
1557 handle history sizes up to INT_MAX. The command itself is
1558 uinteger, so UINT_MAX means "unlimited", but we only get that if
1559 the user does "set history size 0" -- "set history size <UINT_MAX>"
1560 throws out-of-range. */
1561 if (history_size_setshow_var
> INT_MAX
1562 && history_size_setshow_var
!= UINT_MAX
)
1564 unsigned int new_value
= history_size_setshow_var
;
1566 /* Restore previous value before throwing. */
1567 if (history_is_stifled ())
1568 history_size_setshow_var
= history_max_entries
;
1570 history_size_setshow_var
= UINT_MAX
;
1572 error (_("integer %u out of range"), new_value
);
1575 /* Commit the new value to readline's history. */
1576 if (history_size_setshow_var
== UINT_MAX
)
1577 unstifle_history ();
1579 stifle_history (history_size_setshow_var
);
1583 set_history (char *args
, int from_tty
)
1585 printf_unfiltered (_("\"set history\" must be followed "
1586 "by the name of a history subcommand.\n"));
1587 help_list (sethistlist
, "set history ", all_commands
, gdb_stdout
);
1591 show_history (char *args
, int from_tty
)
1593 cmd_show_list (showhistlist
, from_tty
, "");
1596 int info_verbose
= 0; /* Default verbose msgs off. */
1598 /* Called by do_setshow_command. An elaborate joke. */
1600 set_verbose (char *args
, int from_tty
, struct cmd_list_element
*c
)
1602 const char *cmdname
= "verbose";
1603 struct cmd_list_element
*showcmd
;
1605 showcmd
= lookup_cmd_1 (&cmdname
, showlist
, NULL
, 1);
1606 gdb_assert (showcmd
!= NULL
&& showcmd
!= CMD_LIST_AMBIGUOUS
);
1610 c
->doc
= "Set verbose printing of informational messages.";
1611 showcmd
->doc
= "Show verbose printing of informational messages.";
1615 c
->doc
= "Set verbosity.";
1616 showcmd
->doc
= "Show verbosity.";
1620 /* Init the history buffer. Note that we are called after the init file(s)
1621 have been read so that the user can change the history file via his
1622 .gdbinit file (for instance). The GDBHISTFILE environment variable
1623 overrides all of this. */
1630 tmpenv
= getenv ("HISTSIZE");
1635 var
= atoi (tmpenv
);
1638 /* Prefer ending up with no history rather than overflowing
1639 readline's history interface, which uses signed 'int'
1644 history_size_setshow_var
= var
;
1646 /* If the init file hasn't set a size yet, pick the default. */
1647 else if (history_size_setshow_var
== 0)
1648 history_size_setshow_var
= 256;
1650 /* Note that unlike "set history size 0", "HISTSIZE=0" really sets
1651 the history size to 0... */
1652 stifle_history (history_size_setshow_var
);
1654 tmpenv
= getenv ("GDBHISTFILE");
1656 history_filename
= xstrdup (tmpenv
);
1657 else if (!history_filename
)
1659 /* We include the current directory so that if the user changes
1660 directories the file written will be the same as the one
1663 /* No leading dots in file names are allowed on MSDOS. */
1664 history_filename
= concat (current_directory
, "/_gdb_history",
1667 history_filename
= concat (current_directory
, "/.gdb_history",
1671 read_history (history_filename
);
1675 show_prompt (struct ui_file
*file
, int from_tty
,
1676 struct cmd_list_element
*c
, const char *value
)
1678 fprintf_filtered (file
, _("Gdb's prompt is \"%s\".\n"), value
);
1682 show_async_command_editing_p (struct ui_file
*file
, int from_tty
,
1683 struct cmd_list_element
*c
, const char *value
)
1685 fprintf_filtered (file
, _("Editing of command lines as "
1686 "they are typed is %s.\n"),
1691 show_annotation_level (struct ui_file
*file
, int from_tty
,
1692 struct cmd_list_element
*c
, const char *value
)
1694 fprintf_filtered (file
, _("Annotation_level is %s.\n"), value
);
1698 show_exec_done_display_p (struct ui_file
*file
, int from_tty
,
1699 struct cmd_list_element
*c
, const char *value
)
1701 fprintf_filtered (file
, _("Notification of completion for "
1702 "asynchronous execution commands is %s.\n"),
1706 /* New values of the "data-directory" parameter are staged here. */
1707 static char *staged_gdb_datadir
;
1709 /* "set" command for the gdb_datadir configuration variable. */
1712 set_gdb_datadir (char *args
, int from_tty
, struct cmd_list_element
*c
)
1714 set_gdb_data_directory (staged_gdb_datadir
);
1715 observer_notify_gdb_datadir_changed ();
1718 /* "show" command for the gdb_datadir configuration variable. */
1721 show_gdb_datadir (struct ui_file
*file
, int from_tty
,
1722 struct cmd_list_element
*c
, const char *value
)
1724 fprintf_filtered (file
, _("GDB's data directory is \"%s\".\n"),
1729 set_history_filename (char *args
, int from_tty
, struct cmd_list_element
*c
)
1731 /* We include the current directory so that if the user changes
1732 directories the file written will be the same as the one
1734 if (!IS_ABSOLUTE_PATH (history_filename
))
1735 history_filename
= reconcat (history_filename
, current_directory
, "/",
1736 history_filename
, (char *) NULL
);
1742 /* Initialize the prompt to a simple "(gdb) " prompt or to whatever
1743 the DEFAULT_PROMPT is. */
1744 set_prompt (DEFAULT_PROMPT
);
1746 /* Set things up for annotation_level > 1, if the user ever decides
1748 async_annotation_suffix
= "prompt";
1750 /* Set the important stuff up for command editing. */
1751 command_editing_p
= 1;
1752 history_expansion_p
= 0;
1753 write_history_p
= 0;
1755 /* Setup important stuff for command line editing. */
1756 rl_completion_word_break_hook
= gdb_completion_word_break_characters
;
1757 rl_completion_entry_function
= readline_line_completion_function
;
1758 rl_completer_word_break_characters
= default_word_break_characters ();
1759 rl_completer_quote_characters
= get_gdb_completer_quote_characters ();
1760 rl_readline_name
= "gdb";
1761 rl_terminal_name
= getenv ("TERM");
1763 /* The name for this defun comes from Bash, where it originated.
1764 15 is Control-o, the same binding this function has in Bash. */
1765 rl_add_defun ("operate-and-get-next", gdb_rl_operate_and_get_next
, 15);
1767 add_setshow_string_cmd ("prompt", class_support
,
1769 _("Set gdb's prompt"),
1770 _("Show gdb's prompt"),
1773 &setlist
, &showlist
);
1775 add_com ("dont-repeat", class_support
, dont_repeat_command
, _("\
1776 Don't repeat this command.\nPrimarily \
1777 used inside of user-defined commands that should not be repeated when\n\
1780 add_setshow_boolean_cmd ("editing", class_support
,
1781 &async_command_editing_p
, _("\
1782 Set editing of command lines as they are typed."), _("\
1783 Show editing of command lines as they are typed."), _("\
1784 Use \"on\" to enable the editing, and \"off\" to disable it.\n\
1785 Without an argument, command line editing is enabled. To edit, use\n\
1786 EMACS-like or VI-like commands like control-P or ESC."),
1787 set_async_editing_command
,
1788 show_async_command_editing_p
,
1789 &setlist
, &showlist
);
1791 add_setshow_boolean_cmd ("save", no_class
, &write_history_p
, _("\
1792 Set saving of the history record on exit."), _("\
1793 Show saving of the history record on exit."), _("\
1794 Use \"on\" to enable the saving, and \"off\" to disable it.\n\
1795 Without an argument, saving is enabled."),
1797 show_write_history_p
,
1798 &sethistlist
, &showhistlist
);
1800 add_setshow_uinteger_cmd ("size", no_class
, &history_size_setshow_var
, _("\
1801 Set the size of the command history,"), _("\
1802 Show the size of the command history,"), _("\
1803 ie. the number of previous commands to keep a record of.\n\
1804 If set to \"unlimited\", the number of commands kept in the history\n\
1805 list is unlimited. This defaults to the value of the environment\n\
1806 variable \"HISTSIZE\", or to 256 if this variable is not set."),
1807 set_history_size_command
,
1809 &sethistlist
, &showhistlist
);
1811 add_setshow_filename_cmd ("filename", no_class
, &history_filename
, _("\
1812 Set the filename in which to record the command history"), _("\
1813 Show the filename in which to record the command history"), _("\
1814 (the list of previous commands of which a record is kept)."),
1815 set_history_filename
,
1816 show_history_filename
,
1817 &sethistlist
, &showhistlist
);
1819 add_setshow_boolean_cmd ("confirm", class_support
, &confirm
, _("\
1820 Set whether to confirm potentially dangerous operations."), _("\
1821 Show whether to confirm potentially dangerous operations."), NULL
,
1824 &setlist
, &showlist
);
1826 add_setshow_zinteger_cmd ("annotate", class_obscure
, &annotation_level
, _("\
1827 Set annotation_level."), _("\
1828 Show annotation_level."), _("\
1829 0 == normal; 1 == fullname (for use when running under emacs)\n\
1830 2 == output annotated suitably for use by programs that control GDB."),
1832 show_annotation_level
,
1833 &setlist
, &showlist
);
1835 add_setshow_boolean_cmd ("exec-done-display", class_support
,
1836 &exec_done_display_p
, _("\
1837 Set notification of completion for asynchronous execution commands."), _("\
1838 Show notification of completion for asynchronous execution commands."), _("\
1839 Use \"on\" to enable the notification, and \"off\" to disable it."),
1841 show_exec_done_display_p
,
1842 &setlist
, &showlist
);
1844 add_setshow_filename_cmd ("data-directory", class_maintenance
,
1845 &staged_gdb_datadir
, _("Set GDB's data directory."),
1846 _("Show GDB's data directory."),
1848 When set, GDB uses the specified path to search for data files."),
1849 set_gdb_datadir
, show_gdb_datadir
,
1855 gdb_init (char *argv0
)
1857 if (pre_init_ui_hook
)
1858 pre_init_ui_hook ();
1860 /* Run the init function of each source file. */
1863 /* Make sure we return to the original directory upon exit, come
1864 what may, since the OS doesn't do that for us. */
1865 make_final_cleanup (do_chdir_cleanup
, xstrdup (current_directory
));
1868 init_cmd_lists (); /* This needs to be done first. */
1869 initialize_targets (); /* Setup target_terminal macros for utils.c. */
1870 initialize_utils (); /* Make errors and warnings possible. */
1872 /* Here is where we call all the _initialize_foo routines. */
1873 initialize_all_files ();
1875 /* This creates the current_program_space. Do this after all the
1876 _initialize_foo routines have had a chance to install their
1877 per-sspace data keys. Also do this before
1878 initialize_current_architecture is called, because it accesses
1879 exec_bfd of the current program space. */
1880 initialize_progspace ();
1881 initialize_inferiors ();
1882 initialize_current_architecture ();
1884 initialize_event_loop ();
1885 init_main (); /* But that omits this file! Do it now. */
1887 initialize_stdin_serial ();
1889 async_init_signals ();
1891 /* We need a default language for parsing expressions, so simple
1892 things like "set width 0" won't fail if no language is explicitly
1893 set in a config file or implicitly set by reading an executable
1895 set_language (language_c
);
1896 expected_language
= current_language
; /* Don't warn about the change. */
1898 /* Allow another UI to initialize. If the UI fails to initialize,
1899 and it wants GDB to revert to the CLI, it should clear
1900 deprecated_init_ui_hook. */
1901 if (deprecated_init_ui_hook
)
1902 deprecated_init_ui_hook (argv0
);
1904 /* Python initialization, for example, can require various commands to be
1905 installed. For example "info pretty-printer" needs the "info"
1906 prefix to be installed. Keep things simple and just do final
1907 script initialization here. */
1908 finish_ext_lang_initialization ();