1 /* Top level stuff for GDB, the GNU debugger.
3 Copyright (C) 1986-2015 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 /* This hook is called from within gdb's many mini-event loops which
176 could steal control from a real user interface's event loop. It
177 returns non-zero if the user is requesting a detach, zero
180 int (*deprecated_ui_loop_hook
) (int);
183 /* Called from print_frame_info to list the line we stopped in. */
185 void (*deprecated_print_frame_info_listing_hook
) (struct symtab
* s
,
189 /* Replaces most of query. */
191 int (*deprecated_query_hook
) (const char *, va_list);
193 /* Replaces most of warning. */
195 void (*deprecated_warning_hook
) (const char *, va_list);
197 /* These three functions support getting lines of text from the user.
198 They are used in sequence. First deprecated_readline_begin_hook is
199 called with a text string that might be (for example) a message for
200 the user to type in a sequence of commands to be executed at a
201 breakpoint. If this function calls back to a GUI, it might take
202 this opportunity to pop up a text interaction window with this
203 message. Next, deprecated_readline_hook is called with a prompt
204 that is emitted prior to collecting the user input. It can be
205 called multiple times. Finally, deprecated_readline_end_hook is
206 called to notify the GUI that we are done with the interaction
207 window and it can close it. */
209 void (*deprecated_readline_begin_hook
) (char *, ...);
210 char *(*deprecated_readline_hook
) (const char *);
211 void (*deprecated_readline_end_hook
) (void);
213 /* Called as appropriate to notify the interface that we have attached
214 to or detached from an already running process. */
216 void (*deprecated_attach_hook
) (void);
217 void (*deprecated_detach_hook
) (void);
219 /* Called during long calculations to allow GUI to repair window
220 damage, and to check for stop buttons, etc... */
222 void (*deprecated_interactive_hook
) (void);
224 /* Tell the GUI someone changed the register REGNO. -1 means
225 that the caller does not know which register changed or
226 that several registers have changed (see value_assign). */
227 void (*deprecated_register_changed_hook
) (int regno
);
229 /* Called when going to wait for the target. Usually allows the GUI
230 to run while waiting for target events. */
232 ptid_t (*deprecated_target_wait_hook
) (ptid_t ptid
,
233 struct target_waitstatus
*status
,
236 /* Used by UI as a wrapper around command execution. May do various
237 things like enabling/disabling buttons, etc... */
239 void (*deprecated_call_command_hook
) (struct cmd_list_element
* c
,
240 char *cmd
, int from_tty
);
242 /* Called when the current thread changes. Argument is thread id. */
244 void (*deprecated_context_hook
) (int id
);
246 /* Handler for SIGHUP. */
249 /* NOTE 1999-04-29: This function will be static again, once we modify
250 gdb to use the event loop as the default command loop and we merge
251 event-top.c into this file, top.c. */
255 /* Stop asking user for confirmation --- we're exiting. This
256 prevents asking the user dumb questions. */
258 quit_command ((char *) 0, 0);
260 #endif /* defined SIGHUP */
262 /* Line number we are currently in, in a file which is being sourced. */
263 /* NOTE 1999-04-29: This variable will be static again, once we modify
264 gdb to use the event loop as the default command loop and we merge
265 event-top.c into this file, top.c. */
266 /* static */ int source_line_number
;
268 /* Name of the file we are sourcing. */
269 /* NOTE 1999-04-29: This variable will be static again, once we modify
270 gdb to use the event loop as the default command loop and we merge
271 event-top.c into this file, top.c. */
272 /* static */ const char *source_file_name
;
274 /* Clean up on error during a "source" command (or execution of a
275 user-defined command). */
278 do_restore_instream_cleanup (void *stream
)
280 /* Restore the previous input stream. */
284 /* Read commands from STREAM. */
286 read_command_file (FILE *stream
)
288 struct cleanup
*cleanups
;
290 cleanups
= make_cleanup (do_restore_instream_cleanup
, instream
);
293 do_cleanups (cleanups
);
296 void (*pre_init_ui_hook
) (void);
300 do_chdir_cleanup (void *old_dir
)
308 prepare_execute_command (void)
311 struct cleanup
*cleanup
;
313 mark
= value_mark ();
314 cleanup
= make_cleanup_value_free_to_mark (mark
);
316 /* With multiple threads running while the one we're examining is
317 stopped, the dcache can get stale without us being able to detect
318 it. For the duration of the command, though, use the dcache to
319 help things like backtrace. */
321 target_dcache_invalidate ();
326 /* Tell the user if the language has changed (except first time) after
327 executing a command. */
330 check_frame_language_change (void)
332 static int warned
= 0;
334 /* First make sure that a new frame has been selected, in case the
335 command or the hooks changed the program state. */
336 deprecated_safe_get_selected_frame ();
337 if (current_language
!= expected_language
)
339 if (language_mode
== language_mode_auto
&& info_verbose
)
341 language_info (1); /* Print what changed. */
346 /* Warn the user if the working language does not match the language
347 of the current frame. Only warn the user if we are actually
348 running the program, i.e. there is a stack. */
349 /* FIXME: This should be cacheing the frame and only running when
350 the frame changes. */
352 if (has_stack_frames ())
356 flang
= get_frame_language ();
358 && flang
!= language_unknown
359 && flang
!= current_language
->la_language
)
361 printf_filtered ("%s\n", lang_frame_mismatch_warn
);
370 maybe_wait_sync_command_done (int was_sync
)
372 /* If the interpreter is in sync mode (we're running a user
373 command's list, running command hooks or similars), and we
374 just ran a synchronous command that started the target, wait
375 for that command to end. */
376 if (!interpreter_async
&& !was_sync
&& sync_execution
)
378 while (gdb_do_one_event () >= 0)
384 /* Execute the line P as a command, in the current user context.
385 Pass FROM_TTY as second argument to the defining function. */
388 execute_command (char *p
, int from_tty
)
390 struct cleanup
*cleanup_if_error
, *cleanup
;
391 struct cmd_list_element
*c
;
394 cleanup_if_error
= make_bpstat_clear_actions_cleanup ();
395 cleanup
= prepare_execute_command ();
397 /* Force cleanup of any alloca areas if using C alloca instead of
401 /* This can happen when command_line_input hits end of file. */
404 do_cleanups (cleanup
);
405 discard_cleanups (cleanup_if_error
);
409 target_log_command (p
);
411 while (*p
== ' ' || *p
== '\t')
417 int was_sync
= sync_execution
;
421 /* If trace-commands is set then this will print this command. */
422 print_command_trace (p
);
424 c
= lookup_cmd (&cmd
, cmdlist
, "", 0, 1);
427 /* Pass null arg rather than an empty one. */
430 /* FIXME: cagney/2002-02-02: The c->type test is pretty dodgy
431 while the is_complete_command(cfunc) test is just plain
432 bogus. They should both be replaced by a test of the form
433 c->strip_trailing_white_space_p. */
434 /* NOTE: cagney/2002-02-02: The function.cfunc in the below
435 can't be replaced with func. This is because it is the
436 cfunc, and not the func, that has the value that the
437 is_complete_command hack is testing for. */
438 /* Clear off trailing whitespace, except for set and complete
441 && c
->type
!= set_cmd
442 && !is_complete_command (c
))
444 p
= arg
+ strlen (arg
) - 1;
445 while (p
>= arg
&& (*p
== ' ' || *p
== '\t'))
450 /* If this command has been pre-hooked, run the hook first. */
451 execute_cmd_pre_hook (c
);
453 if (c
->deprecated_warn_user
)
454 deprecated_cmd_warning (line
);
456 /* c->user_commands would be NULL in the case of a python command. */
457 if (c
->theclass
== class_user
&& c
->user_commands
)
458 execute_user_command (c
, arg
);
459 else if (c
->type
== set_cmd
)
460 do_set_command (arg
, from_tty
, c
);
461 else if (c
->type
== show_cmd
)
462 do_show_command (arg
, from_tty
, c
);
463 else if (!cmd_func_p (c
))
464 error (_("That is not a command, just a help topic."));
465 else if (deprecated_call_command_hook
)
466 deprecated_call_command_hook (c
, arg
, from_tty
);
468 cmd_func (c
, arg
, from_tty
);
470 maybe_wait_sync_command_done (was_sync
);
472 /* If this command has been post-hooked, run the hook last. */
473 execute_cmd_post_hook (c
);
477 check_frame_language_change ();
479 do_cleanups (cleanup
);
480 discard_cleanups (cleanup_if_error
);
483 /* Run execute_command for P and FROM_TTY. Capture its output into the
484 returned string, do not display it to the screen. BATCH_FLAG will be
485 temporarily set to true. */
488 execute_command_to_string (char *p
, int from_tty
)
490 struct ui_file
*str_file
;
491 struct cleanup
*cleanup
;
494 /* GDB_STDOUT should be better already restored during these
495 restoration callbacks. */
496 cleanup
= set_batch_flag_and_make_cleanup_restore_page_info ();
498 make_cleanup_restore_integer (&interpreter_async
);
499 interpreter_async
= 0;
501 str_file
= mem_fileopen ();
503 make_cleanup_ui_file_delete (str_file
);
504 make_cleanup_restore_ui_file (&gdb_stdout
);
505 make_cleanup_restore_ui_file (&gdb_stderr
);
506 make_cleanup_restore_ui_file (&gdb_stdlog
);
507 make_cleanup_restore_ui_file (&gdb_stdtarg
);
508 make_cleanup_restore_ui_file (&gdb_stdtargerr
);
510 if (ui_out_redirect (current_uiout
, str_file
) < 0)
511 warning (_("Current output protocol does not support redirection"));
513 make_cleanup_ui_out_redirect_pop (current_uiout
);
515 gdb_stdout
= str_file
;
516 gdb_stderr
= str_file
;
517 gdb_stdlog
= str_file
;
518 gdb_stdtarg
= str_file
;
519 gdb_stdtargerr
= str_file
;
521 execute_command (p
, from_tty
);
523 retval
= ui_file_xstrdup (str_file
, NULL
);
525 do_cleanups (cleanup
);
530 /* Read commands from `instream' and execute them
531 until end of file or error reading instream. */
536 struct cleanup
*old_chain
;
538 int stdin_is_tty
= ISATTY (stdin
);
540 while (instream
&& !feof (instream
))
542 if (window_hook
&& instream
== stdin
)
543 (*window_hook
) (instream
, get_prompt ());
546 if (instream
== stdin
&& stdin_is_tty
)
547 reinitialize_more_filter ();
548 old_chain
= make_cleanup (null_cleanup
, 0);
550 /* Get a command-line. This calls the readline package. */
551 command
= command_line_input (instream
== stdin
?
552 get_prompt () : (char *) NULL
,
553 instream
== stdin
, "prompt");
556 do_cleanups (old_chain
);
560 make_command_stats_cleanup (1);
562 /* Do not execute commented lines. */
563 if (command
[0] != '#')
565 execute_command (command
, instream
== stdin
);
567 /* Do any commands attached to breakpoint we are stopped at. */
568 bpstat_do_actions ();
570 do_cleanups (old_chain
);
574 /* When nonzero, cause dont_repeat to do nothing. This should only be
575 set via prevent_dont_repeat. */
577 static int suppress_dont_repeat
= 0;
579 /* Commands call this if they do not want to be repeated by null lines. */
584 if (suppress_dont_repeat
|| server_command
)
587 /* If we aren't reading from standard input, we are saving the last
588 thing read from stdin in line and don't want to delete it. Null
589 lines won't repeat here in any case. */
590 if (instream
== stdin
)
591 *saved_command_line
= 0;
594 /* Prevent dont_repeat from working, and return a cleanup that
595 restores the previous state. */
598 prevent_dont_repeat (void)
600 struct cleanup
*result
= make_cleanup_restore_integer (&suppress_dont_repeat
);
602 suppress_dont_repeat
= 1;
607 /* Read a line from the stream "instream" without command line editing.
609 It prints PROMPT_ARG once at the start.
610 Action is compatible with "readline", e.g. space for the result is
611 malloc'd and should be freed by the caller.
613 A NULL return means end of file. */
615 gdb_readline (const char *prompt_arg
)
620 int result_size
= 80;
624 /* Don't use a _filtered function here. It causes the assumed
625 character position to be off, since the newline we read from
626 the user is not accounted for. */
627 fputs_unfiltered (prompt_arg
, gdb_stdout
);
628 gdb_flush (gdb_stdout
);
631 result
= (char *) xmalloc (result_size
);
635 /* Read from stdin if we are executing a user defined command.
636 This is the right thing for prompt_for_continue, at least. */
637 c
= fgetc (instream
? instream
: stdin
);
642 /* The last line does not end with a newline. Return it, and
643 if we are called again fgetc will still return EOF and
644 we'll return NULL then. */
652 if (input_index
> 0 && result
[input_index
- 1] == '\r')
657 result
[input_index
++] = c
;
658 while (input_index
>= result_size
)
661 result
= (char *) xrealloc (result
, result_size
);
665 result
[input_index
++] = '\0';
669 /* Variables which control command line editing and history
670 substitution. These variables are given default values at the end
672 static int command_editing_p
;
674 /* NOTE 1999-04-29: This variable will be static again, once we modify
675 gdb to use the event loop as the default command loop and we merge
676 event-top.c into this file, top.c. */
678 /* static */ int history_expansion_p
;
680 static int write_history_p
;
682 show_write_history_p (struct ui_file
*file
, int from_tty
,
683 struct cmd_list_element
*c
, const char *value
)
685 fprintf_filtered (file
, _("Saving of the history record on exit is %s.\n"),
689 /* The variable associated with the "set/show history size"
690 command. The value -1 means unlimited, and -2 means undefined. */
691 static int history_size_setshow_var
= -2;
694 show_history_size (struct ui_file
*file
, int from_tty
,
695 struct cmd_list_element
*c
, const char *value
)
697 fprintf_filtered (file
, _("The size of the command history is %s.\n"),
701 static char *history_filename
;
703 show_history_filename (struct ui_file
*file
, int from_tty
,
704 struct cmd_list_element
*c
, const char *value
)
706 fprintf_filtered (file
, _("The filename in which to record "
707 "the command history is \"%s\".\n"),
711 /* This is like readline(), but it has some gdb-specific behavior.
712 gdb may want readline in both the synchronous and async modes during
713 a single gdb invocation. At the ordinary top-level prompt we might
714 be using the async readline. That means we can't use
715 rl_pre_input_hook, since it doesn't work properly in async mode.
716 However, for a secondary prompt (" >", such as occurs during a
717 `define'), gdb wants a synchronous response.
719 We used to call readline() directly, running it in synchronous
720 mode. But mixing modes this way is not supported, and as of
721 readline 5.x it no longer works; the arrow keys come unbound during
722 the synchronous call. So we make a nested call into the event
723 loop. That's what gdb_readline_wrapper is for. */
725 /* A flag set as soon as gdb_readline_wrapper_line is called; we can't
726 rely on gdb_readline_wrapper_result, which might still be NULL if
727 the user types Control-D for EOF. */
728 static int gdb_readline_wrapper_done
;
730 /* The result of the current call to gdb_readline_wrapper, once a newline
732 static char *gdb_readline_wrapper_result
;
734 /* Any intercepted hook. Operate-and-get-next sets this, expecting it
735 to be called after the newline is processed (which will redisplay
736 the prompt). But in gdb_readline_wrapper we will not get a new
737 prompt until the next call, or until we return to the event loop.
738 So we disable this hook around the newline and restore it before we
740 static void (*saved_after_char_processing_hook
) (void);
742 /* This function is called when readline has seen a complete line of
746 gdb_readline_wrapper_line (char *line
)
748 gdb_assert (!gdb_readline_wrapper_done
);
749 gdb_readline_wrapper_result
= line
;
750 gdb_readline_wrapper_done
= 1;
752 /* Prevent operate-and-get-next from acting too early. */
753 saved_after_char_processing_hook
= after_char_processing_hook
;
754 after_char_processing_hook
= NULL
;
756 /* Prevent parts of the prompt from being redisplayed if annotations
757 are enabled, and readline's state getting out of sync. We'll
758 reinstall the callback handler, which puts the terminal in raw
759 mode (or in readline lingo, in prepped state), when we're next
760 ready to process user input, either in display_gdb_prompt, or if
761 we're handling an asynchronous target event and running in the
762 background, just before returning to the event loop to process
763 further input (or more target events). */
764 if (async_command_editing_p
)
765 gdb_rl_callback_handler_remove ();
768 struct gdb_readline_wrapper_cleanup
770 void (*handler_orig
) (char *);
771 int already_prompted_orig
;
773 /* Whether the target was async. */
774 int target_is_async_orig
;
778 gdb_readline_wrapper_cleanup (void *arg
)
780 struct gdb_readline_wrapper_cleanup
*cleanup
= arg
;
782 rl_already_prompted
= cleanup
->already_prompted_orig
;
784 gdb_assert (input_handler
== gdb_readline_wrapper_line
);
785 input_handler
= cleanup
->handler_orig
;
787 /* Don't restore our input handler in readline yet. That would make
788 readline prep the terminal (putting it in raw mode), while the
789 line we just read may trigger execution of a command that expects
790 the terminal in the default cooked/canonical mode, such as e.g.,
791 running Python's interactive online help utility. See
792 gdb_readline_wrapper_line for when we'll reinstall it. */
794 gdb_readline_wrapper_result
= NULL
;
795 gdb_readline_wrapper_done
= 0;
797 after_char_processing_hook
= saved_after_char_processing_hook
;
798 saved_after_char_processing_hook
= NULL
;
800 if (cleanup
->target_is_async_orig
)
807 gdb_readline_wrapper (const char *prompt
)
809 struct cleanup
*back_to
;
810 struct gdb_readline_wrapper_cleanup
*cleanup
;
813 cleanup
= xmalloc (sizeof (*cleanup
));
814 cleanup
->handler_orig
= input_handler
;
815 input_handler
= gdb_readline_wrapper_line
;
817 cleanup
->already_prompted_orig
= rl_already_prompted
;
819 cleanup
->target_is_async_orig
= target_is_async_p ();
821 back_to
= make_cleanup (gdb_readline_wrapper_cleanup
, cleanup
);
823 if (cleanup
->target_is_async_orig
)
826 /* Display our prompt and prevent double prompt display. */
827 display_gdb_prompt (prompt
);
828 rl_already_prompted
= 1;
830 if (after_char_processing_hook
)
831 (*after_char_processing_hook
) ();
832 gdb_assert (after_char_processing_hook
== NULL
);
834 while (gdb_do_one_event () >= 0)
835 if (gdb_readline_wrapper_done
)
838 retval
= gdb_readline_wrapper_result
;
839 do_cleanups (back_to
);
844 /* The current saved history number from operate-and-get-next.
845 This is -1 if not valid. */
846 static int operate_saved_history
= -1;
848 /* This is put on the appropriate hook and helps operate-and-get-next
851 gdb_rl_operate_and_get_next_completion (void)
853 int delta
= where_history () - operate_saved_history
;
855 /* The `key' argument to rl_get_previous_history is ignored. */
856 rl_get_previous_history (delta
, 0);
857 operate_saved_history
= -1;
859 /* readline doesn't automatically update the display for us. */
862 after_char_processing_hook
= NULL
;
863 rl_pre_input_hook
= NULL
;
866 /* This is a gdb-local readline command handler. It accepts the
867 current command line (like RET does) and, if this command was taken
868 from the history, arranges for the next command in the history to
869 appear on the command line when the prompt returns.
870 We ignore the arguments. */
872 gdb_rl_operate_and_get_next (int count
, int key
)
876 /* Use the async hook. */
877 after_char_processing_hook
= gdb_rl_operate_and_get_next_completion
;
879 /* Find the current line, and find the next line to use. */
880 where
= where_history();
882 if ((history_is_stifled () && (history_length
>= history_max_entries
))
883 || (where
>= history_length
- 1))
884 operate_saved_history
= where
;
886 operate_saved_history
= where
+ 1;
888 return rl_newline (1, key
);
891 /* Number of user commands executed during this session. */
893 static int command_count
= 0;
895 /* Add the user command COMMAND to the input history list. */
898 gdb_add_history (const char *command
)
900 add_history (command
);
904 /* Safely append new history entries to the history file in a corruption-free
905 way using an intermediate local history file. */
908 gdb_safe_append_history (void)
910 int ret
, saved_errno
;
911 char *local_history_filename
;
912 struct cleanup
*old_chain
;
914 local_history_filename
915 = xstrprintf ("%s-gdb%d~", history_filename
, getpid ());
916 old_chain
= make_cleanup (xfree
, local_history_filename
);
918 ret
= rename (history_filename
, local_history_filename
);
920 if (ret
< 0 && saved_errno
!= ENOENT
)
922 warning (_("Could not rename %s to %s: %s"),
923 history_filename
, local_history_filename
,
924 safe_strerror (saved_errno
));
930 /* If the rename failed with ENOENT then either the global history
931 file never existed in the first place or another GDB process is
932 currently appending to it (and has thus temporarily renamed it).
933 Since we can't distinguish between these two cases, we have to
934 conservatively assume the first case and therefore must write out
935 (not append) our known history to our local history file and try
936 to move it back anyway. Otherwise a global history file would
937 never get created! */
938 gdb_assert (saved_errno
== ENOENT
);
939 write_history (local_history_filename
);
943 append_history (command_count
, local_history_filename
);
944 if (history_is_stifled ())
945 history_truncate_file (local_history_filename
, history_max_entries
);
948 ret
= rename (local_history_filename
, history_filename
);
950 if (ret
< 0 && saved_errno
!= EEXIST
)
951 warning (_("Could not rename %s to %s: %s"),
952 local_history_filename
, history_filename
,
953 safe_strerror (saved_errno
));
956 do_cleanups (old_chain
);
959 /* Read one line from the command input stream `instream'
960 into the local static buffer `linebuffer' (whose current length
962 The buffer is made bigger as necessary.
963 Returns the address of the start of the line.
965 NULL is returned for end of file.
967 *If* the instream == stdin & stdin is a terminal, the line read
968 is copied into the file line saver (global var char *line,
969 length linesize) so that it can be duplicated.
971 This routine either uses fancy command line editing or
972 simple input as the user has requested. */
975 command_line_input (const char *prompt_arg
, int repeat
, char *annotation_suffix
)
977 static char *linebuffer
= 0;
978 static unsigned linelength
= 0;
979 const char *prompt
= prompt_arg
;
986 /* The annotation suffix must be non-NULL. */
987 if (annotation_suffix
== NULL
)
988 annotation_suffix
= "";
990 if (annotation_level
> 1 && instream
== stdin
)
994 local_prompt
= alloca ((prompt
== NULL
? 0 : strlen (prompt
))
995 + strlen (annotation_suffix
) + 40);
997 local_prompt
[0] = '\0';
999 strcpy (local_prompt
, prompt
);
1000 strcat (local_prompt
, "\n\032\032");
1001 strcat (local_prompt
, annotation_suffix
);
1002 strcat (local_prompt
, "\n");
1004 prompt
= local_prompt
;
1007 if (linebuffer
== 0)
1010 linebuffer
= (char *) xmalloc (linelength
);
1015 /* Control-C quits instantly if typed while in this loop
1016 since it should not wait until the user types a newline. */
1021 signal (STOP_SIGNAL
, handle_stop_sig
);
1026 /* Make sure that all output has been output. Some machines may
1027 let you get away with leaving out some of the gdb_flush, but
1030 gdb_flush (gdb_stdout
);
1031 gdb_flush (gdb_stderr
);
1033 if (source_file_name
!= NULL
)
1034 ++source_line_number
;
1036 if (annotation_level
> 1 && instream
== stdin
)
1038 puts_unfiltered ("\n\032\032pre-");
1039 puts_unfiltered (annotation_suffix
);
1040 puts_unfiltered ("\n");
1043 /* Don't use fancy stuff if not talking to stdin. */
1044 if (deprecated_readline_hook
&& input_from_terminal_p ())
1046 rl
= (*deprecated_readline_hook
) (prompt
);
1048 else if (command_editing_p
&& input_from_terminal_p ())
1050 rl
= gdb_readline_wrapper (prompt
);
1054 rl
= gdb_readline (prompt
);
1057 if (annotation_level
> 1 && instream
== stdin
)
1059 puts_unfiltered ("\n\032\032post-");
1060 puts_unfiltered (annotation_suffix
);
1061 puts_unfiltered ("\n");
1064 if (!rl
|| rl
== (char *) EOF
)
1069 if (strlen (rl
) + 1 + (p
- linebuffer
) > linelength
)
1071 linelength
= strlen (rl
) + 1 + (p
- linebuffer
);
1072 nline
= (char *) xrealloc (linebuffer
, linelength
);
1073 p
+= nline
- linebuffer
;
1077 /* Copy line. Don't copy null at end. (Leaves line alone
1078 if this was just a newline). */
1082 xfree (rl
); /* Allocated in readline. */
1084 if (p
== linebuffer
|| *(p
- 1) != '\\')
1087 p
--; /* Put on top of '\'. */
1093 signal (STOP_SIGNAL
, SIG_DFL
);
1100 #define SERVER_COMMAND_LENGTH 7
1102 (p
- linebuffer
> SERVER_COMMAND_LENGTH
)
1103 && strncmp (linebuffer
, "server ", SERVER_COMMAND_LENGTH
) == 0;
1106 /* Note that we don't set `line'. Between this and the check in
1107 dont_repeat, this insures that repeating will still do the
1110 return linebuffer
+ SERVER_COMMAND_LENGTH
;
1113 /* Do history expansion if that is wished. */
1114 if (history_expansion_p
&& instream
== stdin
1115 && ISATTY (instream
))
1117 char *history_value
;
1120 *p
= '\0'; /* Insert null now. */
1121 expanded
= history_expand (linebuffer
, &history_value
);
1124 /* Print the changes. */
1125 printf_unfiltered ("%s\n", history_value
);
1127 /* If there was an error, call this function again. */
1130 xfree (history_value
);
1131 return command_line_input (prompt
, repeat
,
1134 if (strlen (history_value
) > linelength
)
1136 linelength
= strlen (history_value
) + 1;
1137 linebuffer
= (char *) xrealloc (linebuffer
, linelength
);
1139 strcpy (linebuffer
, history_value
);
1140 p
= linebuffer
+ strlen (linebuffer
);
1142 xfree (history_value
);
1145 /* If we just got an empty line, and that is supposed to repeat the
1146 previous command, return the value in the global buffer. */
1147 if (repeat
&& p
== linebuffer
)
1148 return saved_command_line
;
1149 for (p1
= linebuffer
; *p1
== ' ' || *p1
== '\t'; p1
++);
1151 return saved_command_line
;
1155 /* Add line to history if appropriate. */
1156 if (*linebuffer
&& input_from_terminal_p ())
1157 gdb_add_history (linebuffer
);
1159 /* Save into global buffer if appropriate. */
1162 if (linelength
> saved_command_line_size
)
1164 saved_command_line
= xrealloc (saved_command_line
, linelength
);
1165 saved_command_line_size
= linelength
;
1167 strcpy (saved_command_line
, linebuffer
);
1168 return saved_command_line
;
1174 /* Print the GDB banner. */
1176 print_gdb_version (struct ui_file
*stream
)
1178 /* From GNU coding standards, first line is meant to be easy for a
1179 program to parse, and is just canonical program name and version
1180 number, which starts after last space. */
1182 fprintf_filtered (stream
, "GNU gdb %s%s\n", PKGVERSION
, version
);
1184 /* Second line is a copyright notice. */
1186 fprintf_filtered (stream
,
1187 "Copyright (C) 2015 Free Software Foundation, Inc.\n");
1189 /* Following the copyright is a brief statement that the program is
1190 free software, that users are free to copy and change it on
1191 certain conditions, that it is covered by the GNU GPL, and that
1192 there is no warranty. */
1194 fprintf_filtered (stream
, "\
1195 License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>\
1196 \nThis is free software: you are free to change and redistribute it.\n\
1197 There is NO WARRANTY, to the extent permitted by law. Type \"show copying\"\n\
1198 and \"show warranty\" for details.\n");
1200 /* After the required info we print the configuration information. */
1202 fprintf_filtered (stream
, "This GDB was configured as \"");
1203 if (strcmp (host_name
, target_name
) != 0)
1205 fprintf_filtered (stream
, "--host=%s --target=%s",
1206 host_name
, target_name
);
1210 fprintf_filtered (stream
, "%s", host_name
);
1212 fprintf_filtered (stream
, "\".\n\
1213 Type \"show configuration\" for configuration details.");
1215 if (REPORT_BUGS_TO
[0])
1217 fprintf_filtered (stream
,
1218 _("\nFor bug reporting instructions, please see:\n"));
1219 fprintf_filtered (stream
, "%s.\n", REPORT_BUGS_TO
);
1221 fprintf_filtered (stream
,
1222 _("Find the GDB manual and other documentation \
1223 resources online at:\n<http://www.gnu.org/software/gdb/documentation/>.\n"));
1224 fprintf_filtered (stream
, _("For help, type \"help\".\n"));
1225 fprintf_filtered (stream
, _("Type \"apropos word\" to search for \
1226 commands related to \"word\"."));
1229 /* Print the details of GDB build-time configuration. */
1231 print_gdb_configuration (struct ui_file
*stream
)
1233 fprintf_filtered (stream
, _("\
1234 This GDB was configured as follows:\n\
1235 configure --host=%s --target=%s\n\
1236 "), host_name
, target_name
);
1237 fprintf_filtered (stream
, _("\
1238 --with-auto-load-dir=%s\n\
1239 --with-auto-load-safe-path=%s\n\
1240 "), AUTO_LOAD_DIR
, AUTO_LOAD_SAFE_PATH
);
1242 fprintf_filtered (stream
, _("\
1246 fprintf_filtered (stream
, _("\
1251 fprintf_filtered (stream
, _("\
1252 --with-gdb-datadir=%s%s\n\
1253 "), GDB_DATADIR
, GDB_DATADIR_RELOCATABLE
? " (relocatable)" : "");
1255 fprintf_filtered (stream
, _("\
1256 --with-iconv-bin=%s%s\n\
1257 "), ICONV_BIN
, ICONV_BIN_RELOCATABLE
? " (relocatable)" : "");
1259 if (JIT_READER_DIR
[0])
1260 fprintf_filtered (stream
, _("\
1261 --with-jit-reader-dir=%s%s\n\
1262 "), JIT_READER_DIR
, JIT_READER_DIR_RELOCATABLE
? " (relocatable)" : "");
1263 #if HAVE_LIBUNWIND_IA64_H
1264 fprintf_filtered (stream
, _("\
1265 --with-libunwind-ia64\n\
1268 fprintf_filtered (stream
, _("\
1269 --without-libunwind-ia64\n\
1273 fprintf_filtered (stream
, _("\
1277 fprintf_filtered (stream
, _("\
1281 #ifdef WITH_PYTHON_PATH
1282 fprintf_filtered (stream
, _("\
1283 --with-python=%s%s\n\
1284 "), WITH_PYTHON_PATH
, PYTHON_PATH_RELOCATABLE
? " (relocatable)" : "");
1287 fprintf_filtered (stream
, _("\
1291 fprintf_filtered (stream
, _("\
1296 fprintf_filtered (stream
, _("\
1297 --with-relocated-sources=%s\n\
1301 fprintf_filtered (stream
, _("\
1302 --with-separate-debug-dir=%s%s\n\
1303 "), DEBUGDIR
, DEBUGDIR_RELOCATABLE
? " (relocatable)" : "");
1304 if (TARGET_SYSTEM_ROOT
[0])
1305 fprintf_filtered (stream
, _("\
1306 --with-sysroot=%s%s\n\
1307 "), TARGET_SYSTEM_ROOT
, TARGET_SYSTEM_ROOT_RELOCATABLE
? " (relocatable)" : "");
1308 if (SYSTEM_GDBINIT
[0])
1309 fprintf_filtered (stream
, _("\
1310 --with-system-gdbinit=%s%s\n\
1311 "), SYSTEM_GDBINIT
, SYSTEM_GDBINIT_RELOCATABLE
? " (relocatable)" : "");
1312 #if HAVE_LIBBABELTRACE
1313 fprintf_filtered (stream
, _("\
1314 --with-babeltrace\n\
1317 fprintf_filtered (stream
, _("\
1318 --without-babeltrace\n\
1321 /* We assume "relocatable" will be printed at least once, thus we always
1322 print this text. It's a reasonably safe assumption for now. */
1323 fprintf_filtered (stream
, _("\n\
1324 (\"Relocatable\" means the directory can be moved with the GDB installation\n\
1325 tree, and GDB will still find it.)\n\
1330 /* The current top level prompt, settable with "set prompt", and/or
1331 with the python `gdb.prompt_hook' hook. */
1332 static char *top_prompt
;
1334 /* Access method for the GDB prompt string. */
1342 /* Set method for the GDB prompt string. */
1345 set_prompt (const char *s
)
1347 char *p
= xstrdup (s
);
1360 /* Callback for iterate_over_inferiors. Kills or detaches the given
1361 inferior, depending on how we originally gained control of it. */
1364 kill_or_detach (struct inferior
*inf
, void *args
)
1366 struct qt_args
*qt
= args
;
1367 struct thread_info
*thread
;
1372 thread
= any_thread_of_process (inf
->pid
);
1375 switch_to_thread (thread
->ptid
);
1377 /* Leave core files alone. */
1378 if (target_has_execution
)
1380 if (inf
->attach_flag
)
1381 target_detach (qt
->args
, qt
->from_tty
);
1390 /* Callback for iterate_over_inferiors. Prints info about what GDB
1391 will do to each inferior on a "quit". ARG points to a struct
1392 ui_out where output is to be collected. */
1395 print_inferior_quit_action (struct inferior
*inf
, void *arg
)
1397 struct ui_file
*stb
= arg
;
1402 if (inf
->attach_flag
)
1403 fprintf_filtered (stb
,
1404 _("\tInferior %d [%s] will be detached.\n"), inf
->num
,
1405 target_pid_to_str (pid_to_ptid (inf
->pid
)));
1407 fprintf_filtered (stb
,
1408 _("\tInferior %d [%s] will be killed.\n"), inf
->num
,
1409 target_pid_to_str (pid_to_ptid (inf
->pid
)));
1414 /* If necessary, make the user confirm that we should quit. Return
1415 non-zero if we should quit, zero if we shouldn't. */
1420 struct ui_file
*stb
;
1421 struct cleanup
*old_chain
;
1425 /* Don't even ask if we're only debugging a core file inferior. */
1426 if (!have_live_inferiors ())
1429 /* Build the query string as a single string. */
1430 stb
= mem_fileopen ();
1431 old_chain
= make_cleanup_ui_file_delete (stb
);
1433 fprintf_filtered (stb
, _("A debugging session is active.\n\n"));
1434 iterate_over_inferiors (print_inferior_quit_action
, stb
);
1435 fprintf_filtered (stb
, _("\nQuit anyway? "));
1437 str
= ui_file_xstrdup (stb
, NULL
);
1438 make_cleanup (xfree
, str
);
1440 qr
= query ("%s", str
);
1441 do_cleanups (old_chain
);
1445 /* Quit without asking for confirmation. */
1448 quit_force (char *args
, int from_tty
)
1453 /* An optional expression may be used to cause gdb to terminate with the
1454 value of that expression. */
1457 struct value
*val
= parse_and_eval (args
);
1459 exit_code
= (int) value_as_long (val
);
1461 else if (return_child_result
)
1462 exit_code
= return_child_result_value
;
1465 qt
.from_tty
= from_tty
;
1467 /* We want to handle any quit errors and exit regardless. */
1469 /* Get out of tfind mode, and kill or detach all inferiors. */
1472 disconnect_tracing ();
1473 iterate_over_inferiors (kill_or_detach
, &qt
);
1475 CATCH (ex
, RETURN_MASK_ALL
)
1477 exception_print (gdb_stderr
, ex
);
1481 /* Give all pushed targets a chance to do minimal cleanup, and pop
1487 CATCH (ex
, RETURN_MASK_ALL
)
1489 exception_print (gdb_stderr
, ex
);
1493 /* Save the history information if it is appropriate to do so. */
1496 if (write_history_p
&& history_filename
1497 && input_from_terminal_p ())
1498 gdb_safe_append_history ();
1500 CATCH (ex
, RETURN_MASK_ALL
)
1502 exception_print (gdb_stderr
, ex
);
1506 /* Do any final cleanups before exiting. */
1509 do_final_cleanups (all_cleanups ());
1511 CATCH (ex
, RETURN_MASK_ALL
)
1513 exception_print (gdb_stderr
, ex
);
1520 /* Returns whether GDB is running on a terminal and input is
1521 currently coming from that terminal. */
1524 input_from_terminal_p (void)
1529 if (gdb_has_a_terminal () && instream
== stdin
)
1532 /* If INSTREAM is unset, and we are not in a user command, we
1533 must be in Insight. That's like having a terminal, for our
1535 if (instream
== NULL
&& !in_user_command
)
1542 dont_repeat_command (char *ignored
, int from_tty
)
1544 /* Can't call dont_repeat here because we're not necessarily reading
1546 *saved_command_line
= 0;
1549 /* Functions to manipulate command line editing control variables. */
1551 /* Number of commands to print in each call to show_commands. */
1552 #define Hist_print 10
1554 show_commands (char *args
, int from_tty
)
1556 /* Index for history commands. Relative to history_base. */
1559 /* Number of the history entry which we are planning to display next.
1560 Relative to history_base. */
1563 /* Print out some of the commands from the command history. */
1567 if (args
[0] == '+' && args
[1] == '\0')
1568 /* "info editing +" should print from the stored position. */
1571 /* "info editing <exp>" should print around command number <exp>. */
1572 num
= (parse_and_eval_long (args
) - history_base
) - Hist_print
/ 2;
1574 /* "show commands" means print the last Hist_print commands. */
1577 num
= history_length
- Hist_print
;
1583 /* If there are at least Hist_print commands, we want to display the last
1584 Hist_print rather than, say, the last 6. */
1585 if (history_length
- num
< Hist_print
)
1587 num
= history_length
- Hist_print
;
1593 offset
< num
+ Hist_print
&& offset
< history_length
;
1596 printf_filtered ("%5d %s\n", history_base
+ offset
,
1597 (history_get (history_base
+ offset
))->line
);
1600 /* The next command we want to display is the next one that we haven't
1604 /* If the user repeats this command with return, it should do what
1605 "show commands +" does. This is unnecessary if arg is null,
1606 because "show commands +" is not useful after "show commands". */
1607 if (from_tty
&& args
)
1614 /* Update the size of our command history file to HISTORY_SIZE.
1616 A HISTORY_SIZE of -1 stands for unlimited. */
1619 set_readline_history_size (int history_size
)
1621 gdb_assert (history_size
>= -1);
1623 if (history_size
== -1)
1624 unstifle_history ();
1626 stifle_history (history_size
);
1629 /* Called by do_setshow_command. */
1631 set_history_size_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
1633 set_readline_history_size (history_size_setshow_var
);
1637 set_history (char *args
, int from_tty
)
1639 printf_unfiltered (_("\"set history\" must be followed "
1640 "by the name of a history subcommand.\n"));
1641 help_list (sethistlist
, "set history ", all_commands
, gdb_stdout
);
1645 show_history (char *args
, int from_tty
)
1647 cmd_show_list (showhistlist
, from_tty
, "");
1650 int info_verbose
= 0; /* Default verbose msgs off. */
1652 /* Called by do_setshow_command. An elaborate joke. */
1654 set_verbose (char *args
, int from_tty
, struct cmd_list_element
*c
)
1656 const char *cmdname
= "verbose";
1657 struct cmd_list_element
*showcmd
;
1659 showcmd
= lookup_cmd_1 (&cmdname
, showlist
, NULL
, 1);
1660 gdb_assert (showcmd
!= NULL
&& showcmd
!= CMD_LIST_AMBIGUOUS
);
1664 c
->doc
= "Set verbose printing of informational messages.";
1665 showcmd
->doc
= "Show verbose printing of informational messages.";
1669 c
->doc
= "Set verbosity.";
1670 showcmd
->doc
= "Show verbosity.";
1674 /* Init the history buffer. Note that we are called after the init file(s)
1675 have been read so that the user can change the history file via his
1676 .gdbinit file (for instance). The GDBHISTFILE environment variable
1677 overrides all of this. */
1684 tmpenv
= getenv ("GDBHISTSIZE");
1690 tmpenv
= skip_spaces (tmpenv
);
1691 var
= strtol (tmpenv
, &endptr
, 10);
1692 endptr
= skip_spaces (endptr
);
1694 /* If GDBHISTSIZE is non-numeric then ignore it. If GDBHISTSIZE is the
1695 empty string, a negative number or a huge positive number (larger than
1696 INT_MAX) then set the history size to unlimited. Otherwise set our
1697 history size to the number we have read. This behavior is consistent
1698 with how bash handles HISTSIZE. */
1699 if (*endptr
!= '\0')
1701 else if (*tmpenv
== '\0'
1704 history_size_setshow_var
= -1;
1706 history_size_setshow_var
= var
;
1709 /* If neither the init file nor GDBHISTSIZE has set a size yet, pick the
1711 if (history_size_setshow_var
== -2)
1712 history_size_setshow_var
= 256;
1714 set_readline_history_size (history_size_setshow_var
);
1716 tmpenv
= getenv ("GDBHISTFILE");
1718 history_filename
= xstrdup (tmpenv
);
1719 else if (!history_filename
)
1721 /* We include the current directory so that if the user changes
1722 directories the file written will be the same as the one
1725 /* No leading dots in file names are allowed on MSDOS. */
1726 history_filename
= concat (current_directory
, "/_gdb_history",
1729 history_filename
= concat (current_directory
, "/.gdb_history",
1733 read_history (history_filename
);
1737 show_prompt (struct ui_file
*file
, int from_tty
,
1738 struct cmd_list_element
*c
, const char *value
)
1740 fprintf_filtered (file
, _("Gdb's prompt is \"%s\".\n"), value
);
1744 show_async_command_editing_p (struct ui_file
*file
, int from_tty
,
1745 struct cmd_list_element
*c
, const char *value
)
1747 fprintf_filtered (file
, _("Editing of command lines as "
1748 "they are typed is %s.\n"),
1753 show_annotation_level (struct ui_file
*file
, int from_tty
,
1754 struct cmd_list_element
*c
, const char *value
)
1756 fprintf_filtered (file
, _("Annotation_level is %s.\n"), value
);
1760 show_exec_done_display_p (struct ui_file
*file
, int from_tty
,
1761 struct cmd_list_element
*c
, const char *value
)
1763 fprintf_filtered (file
, _("Notification of completion for "
1764 "asynchronous execution commands is %s.\n"),
1768 /* New values of the "data-directory" parameter are staged here. */
1769 static char *staged_gdb_datadir
;
1771 /* "set" command for the gdb_datadir configuration variable. */
1774 set_gdb_datadir (char *args
, int from_tty
, struct cmd_list_element
*c
)
1776 set_gdb_data_directory (staged_gdb_datadir
);
1777 observer_notify_gdb_datadir_changed ();
1780 /* "show" command for the gdb_datadir configuration variable. */
1783 show_gdb_datadir (struct ui_file
*file
, int from_tty
,
1784 struct cmd_list_element
*c
, const char *value
)
1786 fprintf_filtered (file
, _("GDB's data directory is \"%s\".\n"),
1791 set_history_filename (char *args
, int from_tty
, struct cmd_list_element
*c
)
1793 /* We include the current directory so that if the user changes
1794 directories the file written will be the same as the one
1796 if (!IS_ABSOLUTE_PATH (history_filename
))
1797 history_filename
= reconcat (history_filename
, current_directory
, "/",
1798 history_filename
, (char *) NULL
);
1804 /* Initialize the prompt to a simple "(gdb) " prompt or to whatever
1805 the DEFAULT_PROMPT is. */
1806 set_prompt (DEFAULT_PROMPT
);
1808 /* Set things up for annotation_level > 1, if the user ever decides
1810 async_annotation_suffix
= "prompt";
1812 /* Set the important stuff up for command editing. */
1813 command_editing_p
= 1;
1814 history_expansion_p
= 0;
1815 write_history_p
= 0;
1817 /* Setup important stuff for command line editing. */
1818 rl_completion_word_break_hook
= gdb_completion_word_break_characters
;
1819 rl_completion_entry_function
= readline_line_completion_function
;
1820 rl_completer_word_break_characters
= default_word_break_characters ();
1821 rl_completer_quote_characters
= get_gdb_completer_quote_characters ();
1822 rl_completion_display_matches_hook
= cli_display_match_list
;
1823 rl_readline_name
= "gdb";
1824 rl_terminal_name
= getenv ("TERM");
1826 /* The name for this defun comes from Bash, where it originated.
1827 15 is Control-o, the same binding this function has in Bash. */
1828 rl_add_defun ("operate-and-get-next", gdb_rl_operate_and_get_next
, 15);
1830 add_setshow_string_cmd ("prompt", class_support
,
1832 _("Set gdb's prompt"),
1833 _("Show gdb's prompt"),
1836 &setlist
, &showlist
);
1838 add_com ("dont-repeat", class_support
, dont_repeat_command
, _("\
1839 Don't repeat this command.\nPrimarily \
1840 used inside of user-defined commands that should not be repeated when\n\
1843 add_setshow_boolean_cmd ("editing", class_support
,
1844 &async_command_editing_p
, _("\
1845 Set editing of command lines as they are typed."), _("\
1846 Show editing of command lines as they are typed."), _("\
1847 Use \"on\" to enable the editing, and \"off\" to disable it.\n\
1848 Without an argument, command line editing is enabled. To edit, use\n\
1849 EMACS-like or VI-like commands like control-P or ESC."),
1850 set_async_editing_command
,
1851 show_async_command_editing_p
,
1852 &setlist
, &showlist
);
1854 add_setshow_boolean_cmd ("save", no_class
, &write_history_p
, _("\
1855 Set saving of the history record on exit."), _("\
1856 Show saving of the history record on exit."), _("\
1857 Use \"on\" to enable the saving, and \"off\" to disable it.\n\
1858 Without an argument, saving is enabled."),
1860 show_write_history_p
,
1861 &sethistlist
, &showhistlist
);
1863 add_setshow_zuinteger_unlimited_cmd ("size", no_class
,
1864 &history_size_setshow_var
, _("\
1865 Set the size of the command history,"), _("\
1866 Show the size of the command history,"), _("\
1867 ie. the number of previous commands to keep a record of.\n\
1868 If set to \"unlimited\", the number of commands kept in the history\n\
1869 list is unlimited. This defaults to the value of the environment\n\
1870 variable \"GDBHISTSIZE\", or to 256 if this variable is not set."),
1871 set_history_size_command
,
1873 &sethistlist
, &showhistlist
);
1875 add_setshow_filename_cmd ("filename", no_class
, &history_filename
, _("\
1876 Set the filename in which to record the command history"), _("\
1877 Show the filename in which to record the command history"), _("\
1878 (the list of previous commands of which a record is kept)."),
1879 set_history_filename
,
1880 show_history_filename
,
1881 &sethistlist
, &showhistlist
);
1883 add_setshow_boolean_cmd ("confirm", class_support
, &confirm
, _("\
1884 Set whether to confirm potentially dangerous operations."), _("\
1885 Show whether to confirm potentially dangerous operations."), NULL
,
1888 &setlist
, &showlist
);
1890 add_setshow_zinteger_cmd ("annotate", class_obscure
, &annotation_level
, _("\
1891 Set annotation_level."), _("\
1892 Show annotation_level."), _("\
1893 0 == normal; 1 == fullname (for use when running under emacs)\n\
1894 2 == output annotated suitably for use by programs that control GDB."),
1896 show_annotation_level
,
1897 &setlist
, &showlist
);
1899 add_setshow_boolean_cmd ("exec-done-display", class_support
,
1900 &exec_done_display_p
, _("\
1901 Set notification of completion for asynchronous execution commands."), _("\
1902 Show notification of completion for asynchronous execution commands."), _("\
1903 Use \"on\" to enable the notification, and \"off\" to disable it."),
1905 show_exec_done_display_p
,
1906 &setlist
, &showlist
);
1908 add_setshow_filename_cmd ("data-directory", class_maintenance
,
1909 &staged_gdb_datadir
, _("Set GDB's data directory."),
1910 _("Show GDB's data directory."),
1912 When set, GDB uses the specified path to search for data files."),
1913 set_gdb_datadir
, show_gdb_datadir
,
1919 gdb_init (char *argv0
)
1921 if (pre_init_ui_hook
)
1922 pre_init_ui_hook ();
1924 /* Run the init function of each source file. */
1927 /* Make sure we return to the original directory upon exit, come
1928 what may, since the OS doesn't do that for us. */
1929 make_final_cleanup (do_chdir_cleanup
, xstrdup (current_directory
));
1932 init_cmd_lists (); /* This needs to be done first. */
1933 initialize_targets (); /* Setup target_terminal macros for utils.c. */
1934 initialize_utils (); /* Make errors and warnings possible. */
1938 /* Here is where we call all the _initialize_foo routines. */
1939 initialize_all_files ();
1941 /* This creates the current_program_space. Do this after all the
1942 _initialize_foo routines have had a chance to install their
1943 per-sspace data keys. Also do this before
1944 initialize_current_architecture is called, because it accesses
1945 exec_bfd of the current program space. */
1946 initialize_progspace ();
1947 initialize_inferiors ();
1948 initialize_current_architecture ();
1950 init_main (); /* But that omits this file! Do it now. */
1952 initialize_stdin_serial ();
1954 /* Take a snapshot of our tty state before readline/ncurses have had a chance
1956 set_initial_gdb_ttystate ();
1958 async_init_signals ();
1960 /* We need a default language for parsing expressions, so simple
1961 things like "set width 0" won't fail if no language is explicitly
1962 set in a config file or implicitly set by reading an executable
1964 set_language (language_c
);
1965 expected_language
= current_language
; /* Don't warn about the change. */
1967 /* Python initialization, for example, can require various commands to be
1968 installed. For example "info pretty-printer" needs the "info"
1969 prefix to be installed. Keep things simple and just do final
1970 script initialization here. */
1971 finish_ext_lang_initialization ();