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"
54 /* readline include files. */
55 #include "readline/readline.h"
56 #include "readline/history.h"
58 /* readline defines this. */
61 #include <sys/types.h>
63 #include "event-top.h"
68 #include "tracepoint.h"
75 extern void initialize_all_files (void);
77 #define PROMPT(X) the_prompts.prompt_stack[the_prompts.top + X].prompt
78 #define PREFIX(X) the_prompts.prompt_stack[the_prompts.top + X].prefix
79 #define SUFFIX(X) the_prompts.prompt_stack[the_prompts.top + X].suffix
81 /* Default command line prompt. This is overriden in some configs. */
83 #ifndef DEFAULT_PROMPT
84 #define DEFAULT_PROMPT "(gdb) "
87 /* Initialization file name for gdb. This is host-dependent. */
89 const char gdbinit
[] = GDBINIT
;
91 int inhibit_gdbinit
= 0;
93 extern char lang_frame_mismatch_warn
[]; /* language.c */
95 /* Flag for whether we want to confirm potentially dangerous
96 operations. Default is yes. */
101 show_confirm (struct ui_file
*file
, int from_tty
,
102 struct cmd_list_element
*c
, const char *value
)
104 fprintf_filtered (file
, _("Whether to confirm potentially "
105 "dangerous operations is %s.\n"),
109 /* stdio stream that command input is being read from. Set to stdin
110 normally. Set by source_command to the file we are sourcing. Set
111 to NULL if we are executing a user-defined command or interacting
116 /* Flag to indicate whether a user defined command is currently running. */
120 /* Current working directory. */
122 char *current_directory
;
124 /* The directory name is actually stored here (usually). */
125 char gdb_dirbuf
[1024];
127 /* Function to call before reading a command, if nonzero.
128 The function receives two args: an input stream,
129 and a prompt string. */
131 void (*window_hook
) (FILE *, char *);
133 /* Buffer used for reading command lines, and the size
134 allocated for it so far. */
136 char *saved_command_line
;
137 int saved_command_line_size
= 100;
139 /* Nonzero if the current command is modified by "server ". This
140 affects things like recording into the command history, commands
141 repeating on RETURN, etc. This is so a user interface (emacs, GUI,
142 whatever) can issue its own commands and also send along commands
143 from the user, and have the user not notice that the user interface
144 is issuing commands too. */
147 /* Timeout limit for response from target. */
149 /* The default value has been changed many times over the years. It
150 was originally 5 seconds. But that was thought to be a long time
151 to sit and wait, so it was changed to 2 seconds. That was thought
152 to be plenty unless the connection was going through some terminal
153 server or multiplexer or other form of hairy serial connection.
155 In mid-1996, remote_timeout was moved from remote.c to top.c and
156 it began being used in other remote-* targets. It appears that the
157 default was changed to 20 seconds at that time, perhaps because the
158 Renesas E7000 ICE didn't always respond in a timely manner.
160 But if 5 seconds is a long time to sit and wait for retransmissions,
161 20 seconds is far worse. This demonstrates the difficulty of using
162 a single variable for all protocol timeouts.
164 As remote.c is used much more than remote-e7000.c, it was changed
165 back to 2 seconds in 1999. */
167 int remote_timeout
= 2;
169 /* Non-zero tells remote* modules to output debugging info. */
171 int remote_debug
= 0;
173 /* Sbrk location on entry to main. Used for statistics only. */
178 /* Hooks for alternate command interfaces. */
180 /* This hook is called from within gdb's many mini-event loops which
181 could steal control from a real user interface's event loop. It
182 returns non-zero if the user is requesting a detach, zero
185 int (*deprecated_ui_loop_hook
) (int);
188 /* Called from print_frame_info to list the line we stopped in. */
190 void (*deprecated_print_frame_info_listing_hook
) (struct symtab
* s
,
194 /* Replaces most of query. */
196 int (*deprecated_query_hook
) (const char *, va_list);
198 /* Replaces most of warning. */
200 void (*deprecated_warning_hook
) (const char *, va_list);
202 /* These three functions support getting lines of text from the user.
203 They are used in sequence. First deprecated_readline_begin_hook is
204 called with a text string that might be (for example) a message for
205 the user to type in a sequence of commands to be executed at a
206 breakpoint. If this function calls back to a GUI, it might take
207 this opportunity to pop up a text interaction window with this
208 message. Next, deprecated_readline_hook is called with a prompt
209 that is emitted prior to collecting the user input. It can be
210 called multiple times. Finally, deprecated_readline_end_hook is
211 called to notify the GUI that we are done with the interaction
212 window and it can close it. */
214 void (*deprecated_readline_begin_hook
) (char *, ...);
215 char *(*deprecated_readline_hook
) (const char *);
216 void (*deprecated_readline_end_hook
) (void);
218 /* Called as appropriate to notify the interface that we have attached
219 to or detached from an already running process. */
221 void (*deprecated_attach_hook
) (void);
222 void (*deprecated_detach_hook
) (void);
224 /* Called during long calculations to allow GUI to repair window
225 damage, and to check for stop buttons, etc... */
227 void (*deprecated_interactive_hook
) (void);
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;
333 struct frame_info
*frame
;
335 /* First make sure that a new frame has been selected, in case the
336 command or the hooks changed the program state. */
337 frame
= deprecated_safe_get_selected_frame ();
338 if (current_language
!= expected_language
)
340 if (language_mode
== language_mode_auto
&& info_verbose
)
342 language_info (1); /* Print what changed. */
347 /* Warn the user if the working language does not match the language
348 of the current frame. Only warn the user if we are actually
349 running the program, i.e. there is a stack. */
350 /* FIXME: This should be cacheing the frame and only running when
351 the frame changes. */
353 if (has_stack_frames ())
357 flang
= get_frame_language (frame
);
359 && flang
!= language_unknown
360 && flang
!= current_language
->la_language
)
362 printf_filtered ("%s\n", lang_frame_mismatch_warn
);
371 maybe_wait_sync_command_done (int was_sync
)
373 /* If the interpreter is in sync mode (we're running a user
374 command's list, running command hooks or similars), and we
375 just ran a synchronous command that started the target, wait
376 for that command to end. */
377 if (!interpreter_async
&& !was_sync
&& sync_execution
)
379 while (gdb_do_one_event () >= 0)
385 /* Execute the line P as a command, in the current user context.
386 Pass FROM_TTY as second argument to the defining function. */
389 execute_command (char *p
, int from_tty
)
391 struct cleanup
*cleanup_if_error
, *cleanup
;
392 struct cmd_list_element
*c
;
395 cleanup_if_error
= make_bpstat_clear_actions_cleanup ();
396 cleanup
= prepare_execute_command ();
398 /* Force cleanup of any alloca areas if using C alloca instead of
402 /* This can happen when command_line_input hits end of file. */
405 do_cleanups (cleanup
);
406 discard_cleanups (cleanup_if_error
);
410 target_log_command (p
);
412 while (*p
== ' ' || *p
== '\t')
418 int was_sync
= sync_execution
;
422 /* If trace-commands is set then this will print this command. */
423 print_command_trace (p
);
425 c
= lookup_cmd (&cmd
, cmdlist
, "", 0, 1);
428 /* Pass null arg rather than an empty one. */
431 /* FIXME: cagney/2002-02-02: The c->type test is pretty dodgy
432 while the is_complete_command(cfunc) test is just plain
433 bogus. They should both be replaced by a test of the form
434 c->strip_trailing_white_space_p. */
435 /* NOTE: cagney/2002-02-02: The function.cfunc in the below
436 can't be replaced with func. This is because it is the
437 cfunc, and not the func, that has the value that the
438 is_complete_command hack is testing for. */
439 /* Clear off trailing whitespace, except for set and complete
442 && c
->type
!= set_cmd
443 && !is_complete_command (c
))
445 p
= arg
+ strlen (arg
) - 1;
446 while (p
>= arg
&& (*p
== ' ' || *p
== '\t'))
451 /* If this command has been pre-hooked, run the hook first. */
452 execute_cmd_pre_hook (c
);
454 if (c
->deprecated_warn_user
)
455 deprecated_cmd_warning (line
);
457 /* c->user_commands would be NULL in the case of a python command. */
458 if (c
->theclass
== class_user
&& c
->user_commands
)
459 execute_user_command (c
, arg
);
460 else if (c
->type
== set_cmd
)
461 do_set_command (arg
, from_tty
, c
);
462 else if (c
->type
== show_cmd
)
463 do_show_command (arg
, from_tty
, c
);
464 else if (!cmd_func_p (c
))
465 error (_("That is not a command, just a help topic."));
466 else if (deprecated_call_command_hook
)
467 deprecated_call_command_hook (c
, arg
, from_tty
);
469 cmd_func (c
, arg
, from_tty
);
471 maybe_wait_sync_command_done (was_sync
);
473 /* If this command has been post-hooked, run the hook last. */
474 execute_cmd_post_hook (c
);
478 check_frame_language_change ();
480 do_cleanups (cleanup
);
481 discard_cleanups (cleanup_if_error
);
484 /* Run execute_command for P and FROM_TTY. Capture its output into the
485 returned string, do not display it to the screen. BATCH_FLAG will be
486 temporarily set to true. */
489 execute_command_to_string (char *p
, int from_tty
)
491 struct ui_file
*str_file
;
492 struct cleanup
*cleanup
;
495 /* GDB_STDOUT should be better already restored during these
496 restoration callbacks. */
497 cleanup
= set_batch_flag_and_make_cleanup_restore_page_info ();
499 make_cleanup_restore_integer (&interpreter_async
);
500 interpreter_async
= 0;
502 str_file
= mem_fileopen ();
504 make_cleanup_ui_file_delete (str_file
);
505 make_cleanup_restore_ui_file (&gdb_stdout
);
506 make_cleanup_restore_ui_file (&gdb_stderr
);
507 make_cleanup_restore_ui_file (&gdb_stdlog
);
508 make_cleanup_restore_ui_file (&gdb_stdtarg
);
509 make_cleanup_restore_ui_file (&gdb_stdtargerr
);
511 if (ui_out_redirect (current_uiout
, str_file
) < 0)
512 warning (_("Current output protocol does not support redirection"));
514 make_cleanup_ui_out_redirect_pop (current_uiout
);
516 gdb_stdout
= str_file
;
517 gdb_stderr
= str_file
;
518 gdb_stdlog
= str_file
;
519 gdb_stdtarg
= str_file
;
520 gdb_stdtargerr
= str_file
;
522 execute_command (p
, from_tty
);
524 retval
= ui_file_xstrdup (str_file
, NULL
);
526 do_cleanups (cleanup
);
531 /* Read commands from `instream' and execute them
532 until end of file or error reading instream. */
537 struct cleanup
*old_chain
;
539 int stdin_is_tty
= ISATTY (stdin
);
541 while (instream
&& !feof (instream
))
543 if (window_hook
&& instream
== stdin
)
544 (*window_hook
) (instream
, get_prompt ());
547 if (instream
== stdin
&& stdin_is_tty
)
548 reinitialize_more_filter ();
549 old_chain
= make_cleanup (null_cleanup
, 0);
551 /* Get a command-line. This calls the readline package. */
552 command
= command_line_input (instream
== stdin
?
553 get_prompt () : (char *) NULL
,
554 instream
== stdin
, "prompt");
557 do_cleanups (old_chain
);
561 make_command_stats_cleanup (1);
563 /* Do not execute commented lines. */
564 if (command
[0] != '#')
566 execute_command (command
, instream
== stdin
);
568 /* Do any commands attached to breakpoint we are stopped at. */
569 bpstat_do_actions ();
571 do_cleanups (old_chain
);
575 /* When nonzero, cause dont_repeat to do nothing. This should only be
576 set via prevent_dont_repeat. */
578 static int suppress_dont_repeat
= 0;
580 /* Commands call this if they do not want to be repeated by null lines. */
585 if (suppress_dont_repeat
|| server_command
)
588 /* If we aren't reading from standard input, we are saving the last
589 thing read from stdin in line and don't want to delete it. Null
590 lines won't repeat here in any case. */
591 if (instream
== stdin
)
592 *saved_command_line
= 0;
595 /* Prevent dont_repeat from working, and return a cleanup that
596 restores the previous state. */
599 prevent_dont_repeat (void)
601 struct cleanup
*result
= make_cleanup_restore_integer (&suppress_dont_repeat
);
603 suppress_dont_repeat
= 1;
608 /* Read a line from the stream "instream" without command line editing.
610 It prints PROMPT_ARG once at the start.
611 Action is compatible with "readline", e.g. space for the result is
612 malloc'd and should be freed by the caller.
614 A NULL return means end of file. */
616 gdb_readline (const char *prompt_arg
)
621 int result_size
= 80;
625 /* Don't use a _filtered function here. It causes the assumed
626 character position to be off, since the newline we read from
627 the user is not accounted for. */
628 fputs_unfiltered (prompt_arg
, gdb_stdout
);
629 gdb_flush (gdb_stdout
);
632 result
= (char *) xmalloc (result_size
);
636 /* Read from stdin if we are executing a user defined command.
637 This is the right thing for prompt_for_continue, at least. */
638 c
= fgetc (instream
? instream
: stdin
);
643 /* The last line does not end with a newline. Return it, and
644 if we are called again fgetc will still return EOF and
645 we'll return NULL then. */
653 if (input_index
> 0 && result
[input_index
- 1] == '\r')
658 result
[input_index
++] = c
;
659 while (input_index
>= result_size
)
662 result
= (char *) xrealloc (result
, result_size
);
666 result
[input_index
++] = '\0';
670 /* Variables which control command line editing and history
671 substitution. These variables are given default values at the end
673 static int command_editing_p
;
675 /* NOTE 1999-04-29: This variable will be static again, once we modify
676 gdb to use the event loop as the default command loop and we merge
677 event-top.c into this file, top.c. */
679 /* static */ int history_expansion_p
;
681 static int write_history_p
;
683 show_write_history_p (struct ui_file
*file
, int from_tty
,
684 struct cmd_list_element
*c
, const char *value
)
686 fprintf_filtered (file
, _("Saving of the history record on exit is %s.\n"),
690 /* The variable associated with the "set/show history size"
691 command. The value -1 means unlimited, and -2 means undefined. */
692 static int history_size_setshow_var
= -2;
695 show_history_size (struct ui_file
*file
, int from_tty
,
696 struct cmd_list_element
*c
, const char *value
)
698 fprintf_filtered (file
, _("The size of the command history is %s.\n"),
702 /* Variable associated with the "history remove-duplicates" option.
703 The value -1 means unlimited. */
704 static int history_remove_duplicates
= 0;
707 show_history_remove_duplicates (struct ui_file
*file
, int from_tty
,
708 struct cmd_list_element
*c
, const char *value
)
710 fprintf_filtered (file
,
711 _("The number of history entries to look back at for "
712 "duplicates is %s.\n"),
716 static char *history_filename
;
718 show_history_filename (struct ui_file
*file
, int from_tty
,
719 struct cmd_list_element
*c
, const char *value
)
721 fprintf_filtered (file
, _("The filename in which to record "
722 "the command history is \"%s\".\n"),
726 /* This is like readline(), but it has some gdb-specific behavior.
727 gdb may want readline in both the synchronous and async modes during
728 a single gdb invocation. At the ordinary top-level prompt we might
729 be using the async readline. That means we can't use
730 rl_pre_input_hook, since it doesn't work properly in async mode.
731 However, for a secondary prompt (" >", such as occurs during a
732 `define'), gdb wants a synchronous response.
734 We used to call readline() directly, running it in synchronous
735 mode. But mixing modes this way is not supported, and as of
736 readline 5.x it no longer works; the arrow keys come unbound during
737 the synchronous call. So we make a nested call into the event
738 loop. That's what gdb_readline_wrapper is for. */
740 /* A flag set as soon as gdb_readline_wrapper_line is called; we can't
741 rely on gdb_readline_wrapper_result, which might still be NULL if
742 the user types Control-D for EOF. */
743 static int gdb_readline_wrapper_done
;
745 /* The result of the current call to gdb_readline_wrapper, once a newline
747 static char *gdb_readline_wrapper_result
;
749 /* Any intercepted hook. Operate-and-get-next sets this, expecting it
750 to be called after the newline is processed (which will redisplay
751 the prompt). But in gdb_readline_wrapper we will not get a new
752 prompt until the next call, or until we return to the event loop.
753 So we disable this hook around the newline and restore it before we
755 static void (*saved_after_char_processing_hook
) (void);
758 /* The number of nested readline secondary prompts that are currently
761 static int gdb_secondary_prompt_depth
= 0;
766 gdb_in_secondary_prompt_p (void)
768 return gdb_secondary_prompt_depth
> 0;
772 /* This function is called when readline has seen a complete line of
776 gdb_readline_wrapper_line (char *line
)
778 gdb_assert (!gdb_readline_wrapper_done
);
779 gdb_readline_wrapper_result
= line
;
780 gdb_readline_wrapper_done
= 1;
782 /* Prevent operate-and-get-next from acting too early. */
783 saved_after_char_processing_hook
= after_char_processing_hook
;
784 after_char_processing_hook
= NULL
;
786 /* Prevent parts of the prompt from being redisplayed if annotations
787 are enabled, and readline's state getting out of sync. We'll
788 reinstall the callback handler, which puts the terminal in raw
789 mode (or in readline lingo, in prepped state), when we're next
790 ready to process user input, either in display_gdb_prompt, or if
791 we're handling an asynchronous target event and running in the
792 background, just before returning to the event loop to process
793 further input (or more target events). */
794 if (async_command_editing_p
)
795 gdb_rl_callback_handler_remove ();
798 struct gdb_readline_wrapper_cleanup
800 void (*handler_orig
) (char *);
801 int already_prompted_orig
;
803 /* Whether the target was async. */
804 int target_is_async_orig
;
808 gdb_readline_wrapper_cleanup (void *arg
)
810 struct gdb_readline_wrapper_cleanup
*cleanup
= arg
;
812 rl_already_prompted
= cleanup
->already_prompted_orig
;
814 gdb_assert (input_handler
== gdb_readline_wrapper_line
);
815 input_handler
= cleanup
->handler_orig
;
817 /* Don't restore our input handler in readline yet. That would make
818 readline prep the terminal (putting it in raw mode), while the
819 line we just read may trigger execution of a command that expects
820 the terminal in the default cooked/canonical mode, such as e.g.,
821 running Python's interactive online help utility. See
822 gdb_readline_wrapper_line for when we'll reinstall it. */
824 gdb_readline_wrapper_result
= NULL
;
825 gdb_readline_wrapper_done
= 0;
826 gdb_secondary_prompt_depth
--;
827 gdb_assert (gdb_secondary_prompt_depth
>= 0);
829 after_char_processing_hook
= saved_after_char_processing_hook
;
830 saved_after_char_processing_hook
= NULL
;
832 if (cleanup
->target_is_async_orig
)
839 gdb_readline_wrapper (const char *prompt
)
841 struct cleanup
*back_to
;
842 struct gdb_readline_wrapper_cleanup
*cleanup
;
845 cleanup
= XNEW (struct gdb_readline_wrapper_cleanup
);
846 cleanup
->handler_orig
= input_handler
;
847 input_handler
= gdb_readline_wrapper_line
;
849 cleanup
->already_prompted_orig
= rl_already_prompted
;
851 cleanup
->target_is_async_orig
= target_is_async_p ();
853 gdb_secondary_prompt_depth
++;
854 back_to
= make_cleanup (gdb_readline_wrapper_cleanup
, cleanup
);
856 if (cleanup
->target_is_async_orig
)
859 /* Display our prompt and prevent double prompt display. */
860 display_gdb_prompt (prompt
);
861 rl_already_prompted
= 1;
863 if (after_char_processing_hook
)
864 (*after_char_processing_hook
) ();
865 gdb_assert (after_char_processing_hook
== NULL
);
867 while (gdb_do_one_event () >= 0)
868 if (gdb_readline_wrapper_done
)
871 retval
= gdb_readline_wrapper_result
;
872 do_cleanups (back_to
);
877 /* The current saved history number from operate-and-get-next.
878 This is -1 if not valid. */
879 static int operate_saved_history
= -1;
881 /* This is put on the appropriate hook and helps operate-and-get-next
884 gdb_rl_operate_and_get_next_completion (void)
886 int delta
= where_history () - operate_saved_history
;
888 /* The `key' argument to rl_get_previous_history is ignored. */
889 rl_get_previous_history (delta
, 0);
890 operate_saved_history
= -1;
892 /* readline doesn't automatically update the display for us. */
895 after_char_processing_hook
= NULL
;
896 rl_pre_input_hook
= NULL
;
899 /* This is a gdb-local readline command handler. It accepts the
900 current command line (like RET does) and, if this command was taken
901 from the history, arranges for the next command in the history to
902 appear on the command line when the prompt returns.
903 We ignore the arguments. */
905 gdb_rl_operate_and_get_next (int count
, int key
)
909 /* Use the async hook. */
910 after_char_processing_hook
= gdb_rl_operate_and_get_next_completion
;
912 /* Find the current line, and find the next line to use. */
913 where
= where_history();
915 if ((history_is_stifled () && (history_length
>= history_max_entries
))
916 || (where
>= history_length
- 1))
917 operate_saved_history
= where
;
919 operate_saved_history
= where
+ 1;
921 return rl_newline (1, key
);
924 /* Number of user commands executed during this session. */
926 static int command_count
= 0;
928 /* Add the user command COMMAND to the input history list. */
931 gdb_add_history (const char *command
)
935 if (history_remove_duplicates
!= 0)
938 int lookbehind_threshold
;
940 /* The lookbehind threshold for finding a duplicate history entry is
941 bounded by command_count because we can't meaningfully delete
942 history entries that are already stored in the history file since
943 the history file is appended to. */
944 if (history_remove_duplicates
== -1
945 || history_remove_duplicates
> command_count
)
946 lookbehind_threshold
= command_count
;
948 lookbehind_threshold
= history_remove_duplicates
;
951 for (lookbehind
= 0; lookbehind
< lookbehind_threshold
; lookbehind
++)
953 HIST_ENTRY
*temp
= previous_history ();
958 if (strcmp (temp
->line
, command
) == 0)
960 HIST_ENTRY
*prev
= remove_history (where_history ());
962 free_history_entry (prev
);
969 add_history (command
);
972 /* Safely append new history entries to the history file in a corruption-free
973 way using an intermediate local history file. */
976 gdb_safe_append_history (void)
978 int ret
, saved_errno
;
979 char *local_history_filename
;
980 struct cleanup
*old_chain
;
982 local_history_filename
983 = xstrprintf ("%s-gdb%d~", history_filename
, getpid ());
984 old_chain
= make_cleanup (xfree
, local_history_filename
);
986 ret
= rename (history_filename
, local_history_filename
);
988 if (ret
< 0 && saved_errno
!= ENOENT
)
990 warning (_("Could not rename %s to %s: %s"),
991 history_filename
, local_history_filename
,
992 safe_strerror (saved_errno
));
998 /* If the rename failed with ENOENT then either the global history
999 file never existed in the first place or another GDB process is
1000 currently appending to it (and has thus temporarily renamed it).
1001 Since we can't distinguish between these two cases, we have to
1002 conservatively assume the first case and therefore must write out
1003 (not append) our known history to our local history file and try
1004 to move it back anyway. Otherwise a global history file would
1005 never get created! */
1006 gdb_assert (saved_errno
== ENOENT
);
1007 write_history (local_history_filename
);
1011 append_history (command_count
, local_history_filename
);
1012 if (history_is_stifled ())
1013 history_truncate_file (local_history_filename
, history_max_entries
);
1016 ret
= rename (local_history_filename
, history_filename
);
1017 saved_errno
= errno
;
1018 if (ret
< 0 && saved_errno
!= EEXIST
)
1019 warning (_("Could not rename %s to %s: %s"),
1020 local_history_filename
, history_filename
,
1021 safe_strerror (saved_errno
));
1024 do_cleanups (old_chain
);
1027 /* Read one line from the command input stream `instream'
1028 into the local static buffer `linebuffer' (whose current length
1030 The buffer is made bigger as necessary.
1031 Returns the address of the start of the line.
1033 NULL is returned for end of file.
1035 *If* the instream == stdin & stdin is a terminal, the line read
1036 is copied into the file line saver (global var char *line,
1037 length linesize) so that it can be duplicated.
1039 This routine either uses fancy command line editing or
1040 simple input as the user has requested. */
1043 command_line_input (const char *prompt_arg
, int repeat
, char *annotation_suffix
)
1045 static char *linebuffer
= 0;
1046 static unsigned linelength
= 0;
1047 const char *prompt
= prompt_arg
;
1054 /* The annotation suffix must be non-NULL. */
1055 if (annotation_suffix
== NULL
)
1056 annotation_suffix
= "";
1058 if (annotation_level
> 1 && instream
== stdin
)
1062 local_prompt
= alloca ((prompt
== NULL
? 0 : strlen (prompt
))
1063 + strlen (annotation_suffix
) + 40);
1065 local_prompt
[0] = '\0';
1067 strcpy (local_prompt
, prompt
);
1068 strcat (local_prompt
, "\n\032\032");
1069 strcat (local_prompt
, annotation_suffix
);
1070 strcat (local_prompt
, "\n");
1072 prompt
= local_prompt
;
1075 if (linebuffer
== 0)
1078 linebuffer
= (char *) xmalloc (linelength
);
1083 /* Control-C quits instantly if typed while in this loop
1084 since it should not wait until the user types a newline. */
1089 signal (STOP_SIGNAL
, handle_stop_sig
);
1094 /* Make sure that all output has been output. Some machines may
1095 let you get away with leaving out some of the gdb_flush, but
1098 gdb_flush (gdb_stdout
);
1099 gdb_flush (gdb_stderr
);
1101 if (source_file_name
!= NULL
)
1102 ++source_line_number
;
1104 if (annotation_level
> 1 && instream
== stdin
)
1106 puts_unfiltered ("\n\032\032pre-");
1107 puts_unfiltered (annotation_suffix
);
1108 puts_unfiltered ("\n");
1111 /* Don't use fancy stuff if not talking to stdin. */
1112 if (deprecated_readline_hook
&& input_from_terminal_p ())
1114 rl
= (*deprecated_readline_hook
) (prompt
);
1116 else if (command_editing_p
&& input_from_terminal_p ())
1118 rl
= gdb_readline_wrapper (prompt
);
1122 rl
= gdb_readline (prompt
);
1125 if (annotation_level
> 1 && instream
== stdin
)
1127 puts_unfiltered ("\n\032\032post-");
1128 puts_unfiltered (annotation_suffix
);
1129 puts_unfiltered ("\n");
1132 if (!rl
|| rl
== (char *) EOF
)
1137 if (strlen (rl
) + 1 + (p
- linebuffer
) > linelength
)
1139 linelength
= strlen (rl
) + 1 + (p
- linebuffer
);
1140 nline
= (char *) xrealloc (linebuffer
, linelength
);
1141 p
+= nline
- linebuffer
;
1145 /* Copy line. Don't copy null at end. (Leaves line alone
1146 if this was just a newline). */
1150 xfree (rl
); /* Allocated in readline. */
1152 if (p
== linebuffer
|| *(p
- 1) != '\\')
1155 p
--; /* Put on top of '\'. */
1161 signal (STOP_SIGNAL
, SIG_DFL
);
1168 #define SERVER_COMMAND_LENGTH 7
1170 (p
- linebuffer
> SERVER_COMMAND_LENGTH
)
1171 && strncmp (linebuffer
, "server ", SERVER_COMMAND_LENGTH
) == 0;
1174 /* Note that we don't set `line'. Between this and the check in
1175 dont_repeat, this insures that repeating will still do the
1178 return linebuffer
+ SERVER_COMMAND_LENGTH
;
1181 /* Do history expansion if that is wished. */
1182 if (history_expansion_p
&& instream
== stdin
1183 && ISATTY (instream
))
1185 char *history_value
;
1188 *p
= '\0'; /* Insert null now. */
1189 expanded
= history_expand (linebuffer
, &history_value
);
1192 /* Print the changes. */
1193 printf_unfiltered ("%s\n", history_value
);
1195 /* If there was an error, call this function again. */
1198 xfree (history_value
);
1199 return command_line_input (prompt
, repeat
,
1202 if (strlen (history_value
) > linelength
)
1204 linelength
= strlen (history_value
) + 1;
1205 linebuffer
= (char *) xrealloc (linebuffer
, linelength
);
1207 strcpy (linebuffer
, history_value
);
1208 p
= linebuffer
+ strlen (linebuffer
);
1210 xfree (history_value
);
1213 /* If we just got an empty line, and that is supposed to repeat the
1214 previous command, return the value in the global buffer. */
1215 if (repeat
&& p
== linebuffer
)
1216 return saved_command_line
;
1217 for (p1
= linebuffer
; *p1
== ' ' || *p1
== '\t'; p1
++);
1219 return saved_command_line
;
1223 /* Add line to history if appropriate. */
1224 if (*linebuffer
&& input_from_terminal_p ())
1225 gdb_add_history (linebuffer
);
1227 /* Save into global buffer if appropriate. */
1230 if (linelength
> saved_command_line_size
)
1232 saved_command_line
= xrealloc (saved_command_line
, linelength
);
1233 saved_command_line_size
= linelength
;
1235 strcpy (saved_command_line
, linebuffer
);
1236 return saved_command_line
;
1242 /* Print the GDB banner. */
1244 print_gdb_version (struct ui_file
*stream
)
1246 /* From GNU coding standards, first line is meant to be easy for a
1247 program to parse, and is just canonical program name and version
1248 number, which starts after last space. */
1250 fprintf_filtered (stream
, "GNU gdb %s%s\n", PKGVERSION
, version
);
1252 /* Second line is a copyright notice. */
1254 fprintf_filtered (stream
,
1255 "Copyright (C) 2015 Free Software Foundation, Inc.\n");
1257 /* Following the copyright is a brief statement that the program is
1258 free software, that users are free to copy and change it on
1259 certain conditions, that it is covered by the GNU GPL, and that
1260 there is no warranty. */
1262 fprintf_filtered (stream
, "\
1263 License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>\
1264 \nThis is free software: you are free to change and redistribute it.\n\
1265 There is NO WARRANTY, to the extent permitted by law. Type \"show copying\"\n\
1266 and \"show warranty\" for details.\n");
1268 /* After the required info we print the configuration information. */
1270 fprintf_filtered (stream
, "This GDB was configured as \"");
1271 if (strcmp (host_name
, target_name
) != 0)
1273 fprintf_filtered (stream
, "--host=%s --target=%s",
1274 host_name
, target_name
);
1278 fprintf_filtered (stream
, "%s", host_name
);
1280 fprintf_filtered (stream
, "\".\n\
1281 Type \"show configuration\" for configuration details.");
1283 if (REPORT_BUGS_TO
[0])
1285 fprintf_filtered (stream
,
1286 _("\nFor bug reporting instructions, please see:\n"));
1287 fprintf_filtered (stream
, "%s.\n", REPORT_BUGS_TO
);
1289 fprintf_filtered (stream
,
1290 _("Find the GDB manual and other documentation \
1291 resources online at:\n<http://www.gnu.org/software/gdb/documentation/>.\n"));
1292 fprintf_filtered (stream
, _("For help, type \"help\".\n"));
1293 fprintf_filtered (stream
, _("Type \"apropos word\" to search for \
1294 commands related to \"word\"."));
1297 /* Print the details of GDB build-time configuration. */
1299 print_gdb_configuration (struct ui_file
*stream
)
1301 fprintf_filtered (stream
, _("\
1302 This GDB was configured as follows:\n\
1303 configure --host=%s --target=%s\n\
1304 "), host_name
, target_name
);
1305 fprintf_filtered (stream
, _("\
1306 --with-auto-load-dir=%s\n\
1307 --with-auto-load-safe-path=%s\n\
1308 "), AUTO_LOAD_DIR
, AUTO_LOAD_SAFE_PATH
);
1310 fprintf_filtered (stream
, _("\
1314 fprintf_filtered (stream
, _("\
1319 fprintf_filtered (stream
, _("\
1320 --with-gdb-datadir=%s%s\n\
1321 "), GDB_DATADIR
, GDB_DATADIR_RELOCATABLE
? " (relocatable)" : "");
1323 fprintf_filtered (stream
, _("\
1324 --with-iconv-bin=%s%s\n\
1325 "), ICONV_BIN
, ICONV_BIN_RELOCATABLE
? " (relocatable)" : "");
1327 if (JIT_READER_DIR
[0])
1328 fprintf_filtered (stream
, _("\
1329 --with-jit-reader-dir=%s%s\n\
1330 "), JIT_READER_DIR
, JIT_READER_DIR_RELOCATABLE
? " (relocatable)" : "");
1331 #if HAVE_LIBUNWIND_IA64_H
1332 fprintf_filtered (stream
, _("\
1333 --with-libunwind-ia64\n\
1336 fprintf_filtered (stream
, _("\
1337 --without-libunwind-ia64\n\
1341 fprintf_filtered (stream
, _("\
1345 fprintf_filtered (stream
, _("\
1349 #ifdef WITH_PYTHON_PATH
1350 fprintf_filtered (stream
, _("\
1351 --with-python=%s%s\n\
1352 "), WITH_PYTHON_PATH
, PYTHON_PATH_RELOCATABLE
? " (relocatable)" : "");
1355 fprintf_filtered (stream
, _("\
1359 fprintf_filtered (stream
, _("\
1364 fprintf_filtered (stream
, _("\
1365 --with-relocated-sources=%s\n\
1369 fprintf_filtered (stream
, _("\
1370 --with-separate-debug-dir=%s%s\n\
1371 "), DEBUGDIR
, DEBUGDIR_RELOCATABLE
? " (relocatable)" : "");
1372 if (TARGET_SYSTEM_ROOT
[0])
1373 fprintf_filtered (stream
, _("\
1374 --with-sysroot=%s%s\n\
1375 "), TARGET_SYSTEM_ROOT
, TARGET_SYSTEM_ROOT_RELOCATABLE
? " (relocatable)" : "");
1376 if (SYSTEM_GDBINIT
[0])
1377 fprintf_filtered (stream
, _("\
1378 --with-system-gdbinit=%s%s\n\
1379 "), SYSTEM_GDBINIT
, SYSTEM_GDBINIT_RELOCATABLE
? " (relocatable)" : "");
1380 #if HAVE_LIBBABELTRACE
1381 fprintf_filtered (stream
, _("\
1382 --with-babeltrace\n\
1385 fprintf_filtered (stream
, _("\
1386 --without-babeltrace\n\
1389 /* We assume "relocatable" will be printed at least once, thus we always
1390 print this text. It's a reasonably safe assumption for now. */
1391 fprintf_filtered (stream
, _("\n\
1392 (\"Relocatable\" means the directory can be moved with the GDB installation\n\
1393 tree, and GDB will still find it.)\n\
1398 /* The current top level prompt, settable with "set prompt", and/or
1399 with the python `gdb.prompt_hook' hook. */
1400 static char *top_prompt
;
1402 /* Access method for the GDB prompt string. */
1410 /* Set method for the GDB prompt string. */
1413 set_prompt (const char *s
)
1415 char *p
= xstrdup (s
);
1428 /* Callback for iterate_over_inferiors. Kills or detaches the given
1429 inferior, depending on how we originally gained control of it. */
1432 kill_or_detach (struct inferior
*inf
, void *args
)
1434 struct qt_args
*qt
= args
;
1435 struct thread_info
*thread
;
1440 thread
= any_thread_of_process (inf
->pid
);
1443 switch_to_thread (thread
->ptid
);
1445 /* Leave core files alone. */
1446 if (target_has_execution
)
1448 if (inf
->attach_flag
)
1449 target_detach (qt
->args
, qt
->from_tty
);
1458 /* Callback for iterate_over_inferiors. Prints info about what GDB
1459 will do to each inferior on a "quit". ARG points to a struct
1460 ui_out where output is to be collected. */
1463 print_inferior_quit_action (struct inferior
*inf
, void *arg
)
1465 struct ui_file
*stb
= arg
;
1470 if (inf
->attach_flag
)
1471 fprintf_filtered (stb
,
1472 _("\tInferior %d [%s] will be detached.\n"), inf
->num
,
1473 target_pid_to_str (pid_to_ptid (inf
->pid
)));
1475 fprintf_filtered (stb
,
1476 _("\tInferior %d [%s] will be killed.\n"), inf
->num
,
1477 target_pid_to_str (pid_to_ptid (inf
->pid
)));
1482 /* If necessary, make the user confirm that we should quit. Return
1483 non-zero if we should quit, zero if we shouldn't. */
1488 struct ui_file
*stb
;
1489 struct cleanup
*old_chain
;
1493 /* Don't even ask if we're only debugging a core file inferior. */
1494 if (!have_live_inferiors ())
1497 /* Build the query string as a single string. */
1498 stb
= mem_fileopen ();
1499 old_chain
= make_cleanup_ui_file_delete (stb
);
1501 fprintf_filtered (stb
, _("A debugging session is active.\n\n"));
1502 iterate_over_inferiors (print_inferior_quit_action
, stb
);
1503 fprintf_filtered (stb
, _("\nQuit anyway? "));
1505 str
= ui_file_xstrdup (stb
, NULL
);
1506 make_cleanup (xfree
, str
);
1508 qr
= query ("%s", str
);
1509 do_cleanups (old_chain
);
1513 /* Prepare to exit GDB cleanly by undoing any changes made to the
1514 terminal so that we leave the terminal in the state we acquired it. */
1517 undo_terminal_modifications_before_exit (void)
1519 target_terminal_ours ();
1523 if (async_command_editing_p
)
1524 gdb_disable_readline ();
1528 /* Quit without asking for confirmation. */
1531 quit_force (char *args
, int from_tty
)
1536 undo_terminal_modifications_before_exit ();
1538 /* An optional expression may be used to cause gdb to terminate with the
1539 value of that expression. */
1542 struct value
*val
= parse_and_eval (args
);
1544 exit_code
= (int) value_as_long (val
);
1546 else if (return_child_result
)
1547 exit_code
= return_child_result_value
;
1550 qt
.from_tty
= from_tty
;
1552 /* We want to handle any quit errors and exit regardless. */
1554 /* Get out of tfind mode, and kill or detach all inferiors. */
1557 disconnect_tracing ();
1558 iterate_over_inferiors (kill_or_detach
, &qt
);
1560 CATCH (ex
, RETURN_MASK_ALL
)
1562 exception_print (gdb_stderr
, ex
);
1566 /* Give all pushed targets a chance to do minimal cleanup, and pop
1572 CATCH (ex
, RETURN_MASK_ALL
)
1574 exception_print (gdb_stderr
, ex
);
1578 /* Save the history information if it is appropriate to do so. */
1581 if (write_history_p
&& history_filename
1582 && input_from_terminal_p ())
1583 gdb_safe_append_history ();
1585 CATCH (ex
, RETURN_MASK_ALL
)
1587 exception_print (gdb_stderr
, ex
);
1591 /* Do any final cleanups before exiting. */
1594 do_final_cleanups (all_cleanups ());
1596 CATCH (ex
, RETURN_MASK_ALL
)
1598 exception_print (gdb_stderr
, ex
);
1605 /* Returns whether GDB is running on a terminal and input is
1606 currently coming from that terminal. */
1609 input_from_terminal_p (void)
1614 if (gdb_has_a_terminal () && instream
== stdin
)
1617 /* If INSTREAM is unset, and we are not in a user command, we
1618 must be in Insight. That's like having a terminal, for our
1620 if (instream
== NULL
&& !in_user_command
)
1627 dont_repeat_command (char *ignored
, int from_tty
)
1629 /* Can't call dont_repeat here because we're not necessarily reading
1631 *saved_command_line
= 0;
1634 /* Functions to manipulate command line editing control variables. */
1636 /* Number of commands to print in each call to show_commands. */
1637 #define Hist_print 10
1639 show_commands (char *args
, int from_tty
)
1641 /* Index for history commands. Relative to history_base. */
1644 /* Number of the history entry which we are planning to display next.
1645 Relative to history_base. */
1648 /* Print out some of the commands from the command history. */
1652 if (args
[0] == '+' && args
[1] == '\0')
1653 /* "info editing +" should print from the stored position. */
1656 /* "info editing <exp>" should print around command number <exp>. */
1657 num
= (parse_and_eval_long (args
) - history_base
) - Hist_print
/ 2;
1659 /* "show commands" means print the last Hist_print commands. */
1662 num
= history_length
- Hist_print
;
1668 /* If there are at least Hist_print commands, we want to display the last
1669 Hist_print rather than, say, the last 6. */
1670 if (history_length
- num
< Hist_print
)
1672 num
= history_length
- Hist_print
;
1678 offset
< num
+ Hist_print
&& offset
< history_length
;
1681 printf_filtered ("%5d %s\n", history_base
+ offset
,
1682 (history_get (history_base
+ offset
))->line
);
1685 /* The next command we want to display is the next one that we haven't
1689 /* If the user repeats this command with return, it should do what
1690 "show commands +" does. This is unnecessary if arg is null,
1691 because "show commands +" is not useful after "show commands". */
1692 if (from_tty
&& args
)
1699 /* Update the size of our command history file to HISTORY_SIZE.
1701 A HISTORY_SIZE of -1 stands for unlimited. */
1704 set_readline_history_size (int history_size
)
1706 gdb_assert (history_size
>= -1);
1708 if (history_size
== -1)
1709 unstifle_history ();
1711 stifle_history (history_size
);
1714 /* Called by do_setshow_command. */
1716 set_history_size_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
1718 set_readline_history_size (history_size_setshow_var
);
1722 set_history (char *args
, int from_tty
)
1724 printf_unfiltered (_("\"set history\" must be followed "
1725 "by the name of a history subcommand.\n"));
1726 help_list (sethistlist
, "set history ", all_commands
, gdb_stdout
);
1730 show_history (char *args
, int from_tty
)
1732 cmd_show_list (showhistlist
, from_tty
, "");
1735 int info_verbose
= 0; /* Default verbose msgs off. */
1737 /* Called by do_setshow_command. An elaborate joke. */
1739 set_verbose (char *args
, int from_tty
, struct cmd_list_element
*c
)
1741 const char *cmdname
= "verbose";
1742 struct cmd_list_element
*showcmd
;
1744 showcmd
= lookup_cmd_1 (&cmdname
, showlist
, NULL
, 1);
1745 gdb_assert (showcmd
!= NULL
&& showcmd
!= CMD_LIST_AMBIGUOUS
);
1749 c
->doc
= "Set verbose printing of informational messages.";
1750 showcmd
->doc
= "Show verbose printing of informational messages.";
1754 c
->doc
= "Set verbosity.";
1755 showcmd
->doc
= "Show verbosity.";
1759 /* Init the history buffer. Note that we are called after the init file(s)
1760 have been read so that the user can change the history file via his
1761 .gdbinit file (for instance). The GDBHISTFILE environment variable
1762 overrides all of this. */
1769 tmpenv
= getenv ("GDBHISTSIZE");
1776 tmpenv
= skip_spaces (tmpenv
);
1778 var
= strtol (tmpenv
, &endptr
, 10);
1779 saved_errno
= errno
;
1780 endptr
= skip_spaces (endptr
);
1782 /* If GDBHISTSIZE is non-numeric then ignore it. If GDBHISTSIZE is the
1783 empty string, a negative number or a huge positive number (larger than
1784 INT_MAX) then set the history size to unlimited. Otherwise set our
1785 history size to the number we have read. This behavior is consistent
1786 with how bash handles HISTSIZE. */
1787 if (*endptr
!= '\0')
1789 else if (*tmpenv
== '\0'
1792 /* On targets where INT_MAX == LONG_MAX, we have to look at
1793 errno after calling strtol to distinguish between a value that
1794 is exactly INT_MAX and an overflowing value that was clamped
1796 || (var
== INT_MAX
&& saved_errno
== ERANGE
))
1797 history_size_setshow_var
= -1;
1799 history_size_setshow_var
= var
;
1802 /* If neither the init file nor GDBHISTSIZE has set a size yet, pick the
1804 if (history_size_setshow_var
== -2)
1805 history_size_setshow_var
= 256;
1807 set_readline_history_size (history_size_setshow_var
);
1809 tmpenv
= getenv ("GDBHISTFILE");
1811 history_filename
= xstrdup (tmpenv
);
1812 else if (!history_filename
)
1814 /* We include the current directory so that if the user changes
1815 directories the file written will be the same as the one
1818 /* No leading dots in file names are allowed on MSDOS. */
1819 history_filename
= concat (current_directory
, "/_gdb_history",
1822 history_filename
= concat (current_directory
, "/.gdb_history",
1826 read_history (history_filename
);
1830 show_prompt (struct ui_file
*file
, int from_tty
,
1831 struct cmd_list_element
*c
, const char *value
)
1833 fprintf_filtered (file
, _("Gdb's prompt is \"%s\".\n"), value
);
1837 show_async_command_editing_p (struct ui_file
*file
, int from_tty
,
1838 struct cmd_list_element
*c
, const char *value
)
1840 fprintf_filtered (file
, _("Editing of command lines as "
1841 "they are typed is %s.\n"),
1846 show_annotation_level (struct ui_file
*file
, int from_tty
,
1847 struct cmd_list_element
*c
, const char *value
)
1849 fprintf_filtered (file
, _("Annotation_level is %s.\n"), value
);
1853 show_exec_done_display_p (struct ui_file
*file
, int from_tty
,
1854 struct cmd_list_element
*c
, const char *value
)
1856 fprintf_filtered (file
, _("Notification of completion for "
1857 "asynchronous execution commands is %s.\n"),
1861 /* New values of the "data-directory" parameter are staged here. */
1862 static char *staged_gdb_datadir
;
1864 /* "set" command for the gdb_datadir configuration variable. */
1867 set_gdb_datadir (char *args
, int from_tty
, struct cmd_list_element
*c
)
1869 set_gdb_data_directory (staged_gdb_datadir
);
1870 observer_notify_gdb_datadir_changed ();
1873 /* "show" command for the gdb_datadir configuration variable. */
1876 show_gdb_datadir (struct ui_file
*file
, int from_tty
,
1877 struct cmd_list_element
*c
, const char *value
)
1879 fprintf_filtered (file
, _("GDB's data directory is \"%s\".\n"),
1884 set_history_filename (char *args
, int from_tty
, struct cmd_list_element
*c
)
1886 /* We include the current directory so that if the user changes
1887 directories the file written will be the same as the one
1889 if (!IS_ABSOLUTE_PATH (history_filename
))
1890 history_filename
= reconcat (history_filename
, current_directory
, "/",
1891 history_filename
, (char *) NULL
);
1897 /* Initialize the prompt to a simple "(gdb) " prompt or to whatever
1898 the DEFAULT_PROMPT is. */
1899 set_prompt (DEFAULT_PROMPT
);
1901 /* Set things up for annotation_level > 1, if the user ever decides
1903 async_annotation_suffix
= "prompt";
1905 /* Set the important stuff up for command editing. */
1906 command_editing_p
= 1;
1907 history_expansion_p
= 0;
1908 write_history_p
= 0;
1910 /* Setup important stuff for command line editing. */
1911 rl_completion_word_break_hook
= gdb_completion_word_break_characters
;
1912 rl_completion_entry_function
= readline_line_completion_function
;
1913 rl_completer_word_break_characters
= default_word_break_characters ();
1914 rl_completer_quote_characters
= get_gdb_completer_quote_characters ();
1915 rl_completion_display_matches_hook
= cli_display_match_list
;
1916 rl_readline_name
= "gdb";
1917 rl_terminal_name
= getenv ("TERM");
1919 /* The name for this defun comes from Bash, where it originated.
1920 15 is Control-o, the same binding this function has in Bash. */
1921 rl_add_defun ("operate-and-get-next", gdb_rl_operate_and_get_next
, 15);
1923 add_setshow_string_cmd ("prompt", class_support
,
1925 _("Set gdb's prompt"),
1926 _("Show gdb's prompt"),
1929 &setlist
, &showlist
);
1931 add_com ("dont-repeat", class_support
, dont_repeat_command
, _("\
1932 Don't repeat this command.\nPrimarily \
1933 used inside of user-defined commands that should not be repeated when\n\
1936 add_setshow_boolean_cmd ("editing", class_support
,
1937 &async_command_editing_p
, _("\
1938 Set editing of command lines as they are typed."), _("\
1939 Show editing of command lines as they are typed."), _("\
1940 Use \"on\" to enable the editing, and \"off\" to disable it.\n\
1941 Without an argument, command line editing is enabled. To edit, use\n\
1942 EMACS-like or VI-like commands like control-P or ESC."),
1943 set_async_editing_command
,
1944 show_async_command_editing_p
,
1945 &setlist
, &showlist
);
1947 add_setshow_boolean_cmd ("save", no_class
, &write_history_p
, _("\
1948 Set saving of the history record on exit."), _("\
1949 Show saving of the history record on exit."), _("\
1950 Use \"on\" to enable the saving, and \"off\" to disable it.\n\
1951 Without an argument, saving is enabled."),
1953 show_write_history_p
,
1954 &sethistlist
, &showhistlist
);
1956 add_setshow_zuinteger_unlimited_cmd ("size", no_class
,
1957 &history_size_setshow_var
, _("\
1958 Set the size of the command history,"), _("\
1959 Show the size of the command history,"), _("\
1960 ie. the number of previous commands to keep a record of.\n\
1961 If set to \"unlimited\", the number of commands kept in the history\n\
1962 list is unlimited. This defaults to the value of the environment\n\
1963 variable \"GDBHISTSIZE\", or to 256 if this variable is not set."),
1964 set_history_size_command
,
1966 &sethistlist
, &showhistlist
);
1968 add_setshow_zuinteger_unlimited_cmd ("remove-duplicates", no_class
,
1969 &history_remove_duplicates
, _("\
1970 Set how far back in history to look for and remove duplicate entries."), _("\
1971 Show how far back in history to look for and remove duplicate entries."), _("\
1972 If set to a nonzero value N, GDB will look back at the last N history entries\n\
1973 and remove the first history entry that is a duplicate of the most recent\n\
1974 entry, each time a new history entry is added.\n\
1975 If set to \"unlimited\", this lookbehind is unbounded.\n\
1976 Only history entries added during this session are considered for removal.\n\
1977 If set to 0, removal of duplicate history entries is disabled.\n\
1978 By default this option is set to 0."),
1980 show_history_remove_duplicates
,
1981 &sethistlist
, &showhistlist
);
1983 add_setshow_filename_cmd ("filename", no_class
, &history_filename
, _("\
1984 Set the filename in which to record the command history"), _("\
1985 Show the filename in which to record the command history"), _("\
1986 (the list of previous commands of which a record is kept)."),
1987 set_history_filename
,
1988 show_history_filename
,
1989 &sethistlist
, &showhistlist
);
1991 add_setshow_boolean_cmd ("confirm", class_support
, &confirm
, _("\
1992 Set whether to confirm potentially dangerous operations."), _("\
1993 Show whether to confirm potentially dangerous operations."), NULL
,
1996 &setlist
, &showlist
);
1998 add_setshow_zinteger_cmd ("annotate", class_obscure
, &annotation_level
, _("\
1999 Set annotation_level."), _("\
2000 Show annotation_level."), _("\
2001 0 == normal; 1 == fullname (for use when running under emacs)\n\
2002 2 == output annotated suitably for use by programs that control GDB."),
2004 show_annotation_level
,
2005 &setlist
, &showlist
);
2007 add_setshow_boolean_cmd ("exec-done-display", class_support
,
2008 &exec_done_display_p
, _("\
2009 Set notification of completion for asynchronous execution commands."), _("\
2010 Show notification of completion for asynchronous execution commands."), _("\
2011 Use \"on\" to enable the notification, and \"off\" to disable it."),
2013 show_exec_done_display_p
,
2014 &setlist
, &showlist
);
2016 add_setshow_filename_cmd ("data-directory", class_maintenance
,
2017 &staged_gdb_datadir
, _("Set GDB's data directory."),
2018 _("Show GDB's data directory."),
2020 When set, GDB uses the specified path to search for data files."),
2021 set_gdb_datadir
, show_gdb_datadir
,
2027 gdb_init (char *argv0
)
2029 if (pre_init_ui_hook
)
2030 pre_init_ui_hook ();
2032 /* Run the init function of each source file. */
2035 /* Make sure we return to the original directory upon exit, come
2036 what may, since the OS doesn't do that for us. */
2037 make_final_cleanup (do_chdir_cleanup
, xstrdup (current_directory
));
2040 init_cmd_lists (); /* This needs to be done first. */
2041 initialize_targets (); /* Setup target_terminal macros for utils.c. */
2042 initialize_utils (); /* Make errors and warnings possible. */
2046 /* Here is where we call all the _initialize_foo routines. */
2047 initialize_all_files ();
2049 /* This creates the current_program_space. Do this after all the
2050 _initialize_foo routines have had a chance to install their
2051 per-sspace data keys. Also do this before
2052 initialize_current_architecture is called, because it accesses
2053 exec_bfd of the current program space. */
2054 initialize_progspace ();
2055 initialize_inferiors ();
2056 initialize_current_architecture ();
2058 init_main (); /* But that omits this file! Do it now. */
2060 initialize_stdin_serial ();
2062 /* Take a snapshot of our tty state before readline/ncurses have had a chance
2064 set_initial_gdb_ttystate ();
2066 async_init_signals ();
2068 /* We need a default language for parsing expressions, so simple
2069 things like "set width 0" won't fail if no language is explicitly
2070 set in a config file or implicitly set by reading an executable
2072 set_language (language_c
);
2073 expected_language
= current_language
; /* Don't warn about the change. */
2075 /* Python initialization, for example, can require various commands to be
2076 installed. For example "info pretty-printer" needs the "info"
2077 prefix to be installed. Keep things simple and just do final
2078 script initialization here. */
2079 finish_ext_lang_initialization ();