1 /* Top level stuff for GDB, the GNU debugger.
3 Copyright (C) 1986-2016 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"
55 /* readline include files. */
56 #include "readline/readline.h"
57 #include "readline/history.h"
59 /* readline defines this. */
62 #include <sys/types.h>
64 #include "event-top.h"
69 #include "tracepoint.h"
76 extern void initialize_all_files (void);
78 #define PROMPT(X) the_prompts.prompt_stack[the_prompts.top + X].prompt
79 #define PREFIX(X) the_prompts.prompt_stack[the_prompts.top + X].prefix
80 #define SUFFIX(X) the_prompts.prompt_stack[the_prompts.top + X].suffix
82 /* Default command line prompt. This is overriden in some configs. */
84 #ifndef DEFAULT_PROMPT
85 #define DEFAULT_PROMPT "(gdb) "
88 /* Initialization file name for gdb. This is host-dependent. */
90 const char gdbinit
[] = GDBINIT
;
92 int inhibit_gdbinit
= 0;
94 extern char lang_frame_mismatch_warn
[]; /* language.c */
96 /* Flag for whether we want to confirm potentially dangerous
97 operations. Default is yes. */
102 show_confirm (struct ui_file
*file
, int from_tty
,
103 struct cmd_list_element
*c
, const char *value
)
105 fprintf_filtered (file
, _("Whether to confirm potentially "
106 "dangerous operations is %s.\n"),
110 /* stdio stream that command input is being read from. Set to stdin
111 normally. Set by source_command to the file we are sourcing. Set
112 to NULL if we are executing a user-defined command or interacting
117 /* Flag to indicate whether a user defined command is currently running. */
121 /* Current working directory. */
123 char *current_directory
;
125 /* The directory name is actually stored here (usually). */
126 char gdb_dirbuf
[1024];
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 /* Called when going to wait for the target. Usually allows the GUI
225 to run while waiting for target events. */
227 ptid_t (*deprecated_target_wait_hook
) (ptid_t ptid
,
228 struct target_waitstatus
*status
,
231 /* Used by UI as a wrapper around command execution. May do various
232 things like enabling/disabling buttons, etc... */
234 void (*deprecated_call_command_hook
) (struct cmd_list_element
* c
,
235 char *cmd
, int from_tty
);
237 /* Called when the current thread changes. Argument is thread id. */
239 void (*deprecated_context_hook
) (int id
);
241 /* Handler for SIGHUP. */
244 /* NOTE 1999-04-29: This function will be static again, once we modify
245 gdb to use the event loop as the default command loop and we merge
246 event-top.c into this file, top.c. */
250 /* Stop asking user for confirmation --- we're exiting. This
251 prevents asking the user dumb questions. */
253 quit_command ((char *) 0, 0);
255 #endif /* defined SIGHUP */
257 /* Line number we are currently in, in a file which is being sourced. */
258 /* NOTE 1999-04-29: This variable will be static again, once we modify
259 gdb to use the event loop as the default command loop and we merge
260 event-top.c into this file, top.c. */
261 /* static */ int source_line_number
;
263 /* Name of the file we are sourcing. */
264 /* NOTE 1999-04-29: This variable will be static again, once we modify
265 gdb to use the event loop as the default command loop and we merge
266 event-top.c into this file, top.c. */
267 /* static */ const char *source_file_name
;
269 /* Clean up on error during a "source" command (or execution of a
270 user-defined command). */
273 do_restore_instream_cleanup (void *stream
)
275 /* Restore the previous input stream. */
276 instream
= (FILE *) stream
;
279 /* Read commands from STREAM. */
281 read_command_file (FILE *stream
)
283 struct cleanup
*cleanups
;
285 cleanups
= make_cleanup (do_restore_instream_cleanup
, instream
);
288 do_cleanups (cleanups
);
291 void (*pre_init_ui_hook
) (void);
295 do_chdir_cleanup (void *old_dir
)
303 prepare_execute_command (void)
306 struct cleanup
*cleanup
;
308 mark
= value_mark ();
309 cleanup
= make_cleanup_value_free_to_mark (mark
);
311 /* With multiple threads running while the one we're examining is
312 stopped, the dcache can get stale without us being able to detect
313 it. For the duration of the command, though, use the dcache to
314 help things like backtrace. */
316 target_dcache_invalidate ();
321 /* Tell the user if the language has changed (except first time) after
322 executing a command. */
325 check_frame_language_change (void)
327 static int warned
= 0;
328 struct frame_info
*frame
;
330 /* First make sure that a new frame has been selected, in case the
331 command or the hooks changed the program state. */
332 frame
= deprecated_safe_get_selected_frame ();
333 if (current_language
!= expected_language
)
335 if (language_mode
== language_mode_auto
&& info_verbose
)
337 language_info (1); /* Print what changed. */
342 /* Warn the user if the working language does not match the language
343 of the current frame. Only warn the user if we are actually
344 running the program, i.e. there is a stack. */
345 /* FIXME: This should be cacheing the frame and only running when
346 the frame changes. */
348 if (has_stack_frames ())
352 flang
= get_frame_language (frame
);
354 && flang
!= language_unknown
355 && flang
!= current_language
->la_language
)
357 printf_filtered ("%s\n", lang_frame_mismatch_warn
);
366 wait_sync_command_done (void)
368 while (gdb_do_one_event () >= 0)
376 maybe_wait_sync_command_done (int was_sync
)
378 /* If the interpreter is in sync mode (we're running a user
379 command's list, running command hooks or similars), and we
380 just ran a synchronous command that started the target, wait
381 for that command to end. */
382 if (!interpreter_async
&& !was_sync
&& sync_execution
)
383 wait_sync_command_done ();
386 /* Execute the line P as a command, in the current user context.
387 Pass FROM_TTY as second argument to the defining function. */
390 execute_command (char *p
, int from_tty
)
392 struct cleanup
*cleanup_if_error
, *cleanup
;
393 struct cmd_list_element
*c
;
396 cleanup_if_error
= make_bpstat_clear_actions_cleanup ();
397 cleanup
= prepare_execute_command ();
399 /* Force cleanup of any alloca areas if using C alloca instead of
403 /* This can happen when command_line_input hits end of file. */
406 do_cleanups (cleanup
);
407 discard_cleanups (cleanup_if_error
);
411 target_log_command (p
);
413 while (*p
== ' ' || *p
== '\t')
419 int was_sync
= sync_execution
;
423 /* If trace-commands is set then this will print this command. */
424 print_command_trace (p
);
426 c
= lookup_cmd (&cmd
, cmdlist
, "", 0, 1);
429 /* Pass null arg rather than an empty one. */
432 /* FIXME: cagney/2002-02-02: The c->type test is pretty dodgy
433 while the is_complete_command(cfunc) test is just plain
434 bogus. They should both be replaced by a test of the form
435 c->strip_trailing_white_space_p. */
436 /* NOTE: cagney/2002-02-02: The function.cfunc in the below
437 can't be replaced with func. This is because it is the
438 cfunc, and not the func, that has the value that the
439 is_complete_command hack is testing for. */
440 /* Clear off trailing whitespace, except for set and complete
443 && c
->type
!= set_cmd
444 && !is_complete_command (c
))
446 p
= arg
+ strlen (arg
) - 1;
447 while (p
>= arg
&& (*p
== ' ' || *p
== '\t'))
452 /* If this command has been pre-hooked, run the hook first. */
453 execute_cmd_pre_hook (c
);
455 if (c
->deprecated_warn_user
)
456 deprecated_cmd_warning (line
);
458 /* c->user_commands would be NULL in the case of a python command. */
459 if (c
->theclass
== class_user
&& c
->user_commands
)
460 execute_user_command (c
, arg
);
461 else if (c
->type
== set_cmd
)
462 do_set_command (arg
, from_tty
, c
);
463 else if (c
->type
== show_cmd
)
464 do_show_command (arg
, from_tty
, c
);
465 else if (!cmd_func_p (c
))
466 error (_("That is not a command, just a help topic."));
467 else if (deprecated_call_command_hook
)
468 deprecated_call_command_hook (c
, arg
, from_tty
);
470 cmd_func (c
, arg
, from_tty
);
472 maybe_wait_sync_command_done (was_sync
);
474 /* If this command has been post-hooked, run the hook last. */
475 execute_cmd_post_hook (c
);
479 check_frame_language_change ();
481 do_cleanups (cleanup
);
482 discard_cleanups (cleanup_if_error
);
485 /* Run execute_command for P and FROM_TTY. Capture its output into the
486 returned string, do not display it to the screen. BATCH_FLAG will be
487 temporarily set to true. */
490 execute_command_to_string (char *p
, int from_tty
)
492 struct ui_file
*str_file
;
493 struct cleanup
*cleanup
;
496 /* GDB_STDOUT should be better already restored during these
497 restoration callbacks. */
498 cleanup
= set_batch_flag_and_make_cleanup_restore_page_info ();
500 make_cleanup_restore_integer (&interpreter_async
);
501 interpreter_async
= 0;
503 str_file
= mem_fileopen ();
505 make_cleanup_ui_file_delete (str_file
);
506 make_cleanup_restore_ui_file (&gdb_stdout
);
507 make_cleanup_restore_ui_file (&gdb_stderr
);
508 make_cleanup_restore_ui_file (&gdb_stdlog
);
509 make_cleanup_restore_ui_file (&gdb_stdtarg
);
510 make_cleanup_restore_ui_file (&gdb_stdtargerr
);
512 if (ui_out_redirect (current_uiout
, str_file
) < 0)
513 warning (_("Current output protocol does not support redirection"));
515 make_cleanup_ui_out_redirect_pop (current_uiout
);
517 gdb_stdout
= str_file
;
518 gdb_stderr
= str_file
;
519 gdb_stdlog
= str_file
;
520 gdb_stdtarg
= str_file
;
521 gdb_stdtargerr
= str_file
;
523 execute_command (p
, from_tty
);
525 retval
= ui_file_xstrdup (str_file
, NULL
);
527 do_cleanups (cleanup
);
532 /* Read commands from `instream' and execute them
533 until end of file or error reading instream. */
538 struct cleanup
*old_chain
;
541 while (instream
&& !feof (instream
))
544 if (instream
== stdin
)
545 reinitialize_more_filter ();
546 old_chain
= make_cleanup (null_cleanup
, 0);
548 /* Get a command-line. This calls the readline package. */
549 command
= command_line_input (instream
== stdin
?
550 get_prompt () : (char *) NULL
,
551 instream
== stdin
, "prompt");
554 do_cleanups (old_chain
);
558 make_command_stats_cleanup (1);
560 /* Do not execute commented lines. */
561 if (command
[0] != '#')
563 execute_command (command
, instream
== stdin
);
565 /* Do any commands attached to breakpoint we are stopped at. */
566 bpstat_do_actions ();
568 do_cleanups (old_chain
);
572 /* When nonzero, cause dont_repeat to do nothing. This should only be
573 set via prevent_dont_repeat. */
575 static int suppress_dont_repeat
= 0;
577 /* Commands call this if they do not want to be repeated by null lines. */
582 if (suppress_dont_repeat
|| server_command
)
585 /* If we aren't reading from standard input, we are saving the last
586 thing read from stdin in line and don't want to delete it. Null
587 lines won't repeat here in any case. */
588 if (instream
== stdin
)
589 *saved_command_line
= 0;
592 /* Prevent dont_repeat from working, and return a cleanup that
593 restores the previous state. */
596 prevent_dont_repeat (void)
598 struct cleanup
*result
= make_cleanup_restore_integer (&suppress_dont_repeat
);
600 suppress_dont_repeat
= 1;
605 /* Read a line from the stream "instream" without command line editing.
607 It prints PROMPT once at the start.
608 Action is compatible with "readline", e.g. space for the result is
609 malloc'd and should be freed by the caller.
611 A NULL return means end of file. */
614 gdb_readline_no_editing (const char *prompt
)
616 struct buffer line_buffer
;
618 buffer_init (&line_buffer
);
622 /* Don't use a _filtered function here. It causes the assumed
623 character position to be off, since the newline we read from
624 the user is not accounted for. */
625 fputs_unfiltered (prompt
, gdb_stdout
);
626 gdb_flush (gdb_stdout
);
633 /* Read from stdin if we are executing a user defined command.
634 This is the right thing for prompt_for_continue, at least. */
635 c
= fgetc (instream
? instream
: stdin
);
639 if (line_buffer
.used_size
> 0)
640 /* The last line does not end with a newline. Return it, and
641 if we are called again fgetc will still return EOF and
642 we'll return NULL then. */
644 xfree (buffer_finish (&line_buffer
));
650 if (line_buffer
.used_size
> 0
651 && line_buffer
.buffer
[line_buffer
.used_size
- 1] == '\r')
652 line_buffer
.used_size
--;
656 buffer_grow_char (&line_buffer
, c
);
659 buffer_grow_char (&line_buffer
, '\0');
660 return buffer_finish (&line_buffer
);
663 /* Variables which control command line editing and history
664 substitution. These variables are given default values at the end
666 static int command_editing_p
;
668 /* NOTE 1999-04-29: This variable will be static again, once we modify
669 gdb to use the event loop as the default command loop and we merge
670 event-top.c into this file, top.c. */
672 /* static */ int history_expansion_p
;
674 static int write_history_p
;
676 show_write_history_p (struct ui_file
*file
, int from_tty
,
677 struct cmd_list_element
*c
, const char *value
)
679 fprintf_filtered (file
, _("Saving of the history record on exit is %s.\n"),
683 /* The variable associated with the "set/show history size"
684 command. The value -1 means unlimited, and -2 means undefined. */
685 static int history_size_setshow_var
= -2;
688 show_history_size (struct ui_file
*file
, int from_tty
,
689 struct cmd_list_element
*c
, const char *value
)
691 fprintf_filtered (file
, _("The size of the command history is %s.\n"),
695 /* Variable associated with the "history remove-duplicates" option.
696 The value -1 means unlimited. */
697 static int history_remove_duplicates
= 0;
700 show_history_remove_duplicates (struct ui_file
*file
, int from_tty
,
701 struct cmd_list_element
*c
, const char *value
)
703 fprintf_filtered (file
,
704 _("The number of history entries to look back at for "
705 "duplicates is %s.\n"),
709 static char *history_filename
;
711 show_history_filename (struct ui_file
*file
, int from_tty
,
712 struct cmd_list_element
*c
, const char *value
)
714 fprintf_filtered (file
, _("The filename in which to record "
715 "the command history is \"%s\".\n"),
719 /* This is like readline(), but it has some gdb-specific behavior.
720 gdb may want readline in both the synchronous and async modes during
721 a single gdb invocation. At the ordinary top-level prompt we might
722 be using the async readline. That means we can't use
723 rl_pre_input_hook, since it doesn't work properly in async mode.
724 However, for a secondary prompt (" >", such as occurs during a
725 `define'), gdb wants a synchronous response.
727 We used to call readline() directly, running it in synchronous
728 mode. But mixing modes this way is not supported, and as of
729 readline 5.x it no longer works; the arrow keys come unbound during
730 the synchronous call. So we make a nested call into the event
731 loop. That's what gdb_readline_wrapper is for. */
733 /* A flag set as soon as gdb_readline_wrapper_line is called; we can't
734 rely on gdb_readline_wrapper_result, which might still be NULL if
735 the user types Control-D for EOF. */
736 static int gdb_readline_wrapper_done
;
738 /* The result of the current call to gdb_readline_wrapper, once a newline
740 static char *gdb_readline_wrapper_result
;
742 /* Any intercepted hook. Operate-and-get-next sets this, expecting it
743 to be called after the newline is processed (which will redisplay
744 the prompt). But in gdb_readline_wrapper we will not get a new
745 prompt until the next call, or until we return to the event loop.
746 So we disable this hook around the newline and restore it before we
748 static void (*saved_after_char_processing_hook
) (void);
751 /* The number of nested readline secondary prompts that are currently
754 static int gdb_secondary_prompt_depth
= 0;
759 gdb_in_secondary_prompt_p (void)
761 return gdb_secondary_prompt_depth
> 0;
765 /* This function is called when readline has seen a complete line of
769 gdb_readline_wrapper_line (char *line
)
771 gdb_assert (!gdb_readline_wrapper_done
);
772 gdb_readline_wrapper_result
= line
;
773 gdb_readline_wrapper_done
= 1;
775 /* Prevent operate-and-get-next from acting too early. */
776 saved_after_char_processing_hook
= after_char_processing_hook
;
777 after_char_processing_hook
= NULL
;
779 /* Prevent parts of the prompt from being redisplayed if annotations
780 are enabled, and readline's state getting out of sync. We'll
781 reinstall the callback handler, which puts the terminal in raw
782 mode (or in readline lingo, in prepped state), when we're next
783 ready to process user input, either in display_gdb_prompt, or if
784 we're handling an asynchronous target event and running in the
785 background, just before returning to the event loop to process
786 further input (or more target events). */
787 if (async_command_editing_p
)
788 gdb_rl_callback_handler_remove ();
791 struct gdb_readline_wrapper_cleanup
793 void (*handler_orig
) (char *);
794 int already_prompted_orig
;
796 /* Whether the target was async. */
797 int target_is_async_orig
;
801 gdb_readline_wrapper_cleanup (void *arg
)
803 struct gdb_readline_wrapper_cleanup
*cleanup
804 = (struct gdb_readline_wrapper_cleanup
*) arg
;
806 rl_already_prompted
= cleanup
->already_prompted_orig
;
808 gdb_assert (input_handler
== gdb_readline_wrapper_line
);
809 input_handler
= cleanup
->handler_orig
;
811 /* Don't restore our input handler in readline yet. That would make
812 readline prep the terminal (putting it in raw mode), while the
813 line we just read may trigger execution of a command that expects
814 the terminal in the default cooked/canonical mode, such as e.g.,
815 running Python's interactive online help utility. See
816 gdb_readline_wrapper_line for when we'll reinstall it. */
818 gdb_readline_wrapper_result
= NULL
;
819 gdb_readline_wrapper_done
= 0;
820 gdb_secondary_prompt_depth
--;
821 gdb_assert (gdb_secondary_prompt_depth
>= 0);
823 after_char_processing_hook
= saved_after_char_processing_hook
;
824 saved_after_char_processing_hook
= NULL
;
826 if (cleanup
->target_is_async_orig
)
833 gdb_readline_wrapper (const char *prompt
)
835 struct cleanup
*back_to
;
836 struct gdb_readline_wrapper_cleanup
*cleanup
;
839 cleanup
= XNEW (struct gdb_readline_wrapper_cleanup
);
840 cleanup
->handler_orig
= input_handler
;
841 input_handler
= gdb_readline_wrapper_line
;
843 cleanup
->already_prompted_orig
= rl_already_prompted
;
845 cleanup
->target_is_async_orig
= target_is_async_p ();
847 gdb_secondary_prompt_depth
++;
848 back_to
= make_cleanup (gdb_readline_wrapper_cleanup
, cleanup
);
850 if (cleanup
->target_is_async_orig
)
853 /* Display our prompt and prevent double prompt display. */
854 display_gdb_prompt (prompt
);
855 rl_already_prompted
= 1;
857 if (after_char_processing_hook
)
858 (*after_char_processing_hook
) ();
859 gdb_assert (after_char_processing_hook
== NULL
);
861 while (gdb_do_one_event () >= 0)
862 if (gdb_readline_wrapper_done
)
865 retval
= gdb_readline_wrapper_result
;
866 do_cleanups (back_to
);
871 /* The current saved history number from operate-and-get-next.
872 This is -1 if not valid. */
873 static int operate_saved_history
= -1;
875 /* This is put on the appropriate hook and helps operate-and-get-next
878 gdb_rl_operate_and_get_next_completion (void)
880 int delta
= where_history () - operate_saved_history
;
882 /* The `key' argument to rl_get_previous_history is ignored. */
883 rl_get_previous_history (delta
, 0);
884 operate_saved_history
= -1;
886 /* readline doesn't automatically update the display for us. */
889 after_char_processing_hook
= NULL
;
890 rl_pre_input_hook
= NULL
;
893 /* This is a gdb-local readline command handler. It accepts the
894 current command line (like RET does) and, if this command was taken
895 from the history, arranges for the next command in the history to
896 appear on the command line when the prompt returns.
897 We ignore the arguments. */
899 gdb_rl_operate_and_get_next (int count
, int key
)
903 /* Use the async hook. */
904 after_char_processing_hook
= gdb_rl_operate_and_get_next_completion
;
906 /* Find the current line, and find the next line to use. */
907 where
= where_history();
909 if ((history_is_stifled () && (history_length
>= history_max_entries
))
910 || (where
>= history_length
- 1))
911 operate_saved_history
= where
;
913 operate_saved_history
= where
+ 1;
915 return rl_newline (1, key
);
918 /* Number of user commands executed during this session. */
920 static int command_count
= 0;
922 /* Add the user command COMMAND to the input history list. */
925 gdb_add_history (const char *command
)
929 if (history_remove_duplicates
!= 0)
932 int lookbehind_threshold
;
934 /* The lookbehind threshold for finding a duplicate history entry is
935 bounded by command_count because we can't meaningfully delete
936 history entries that are already stored in the history file since
937 the history file is appended to. */
938 if (history_remove_duplicates
== -1
939 || history_remove_duplicates
> command_count
)
940 lookbehind_threshold
= command_count
;
942 lookbehind_threshold
= history_remove_duplicates
;
945 for (lookbehind
= 0; lookbehind
< lookbehind_threshold
; lookbehind
++)
947 HIST_ENTRY
*temp
= previous_history ();
952 if (strcmp (temp
->line
, command
) == 0)
954 HIST_ENTRY
*prev
= remove_history (where_history ());
956 free_history_entry (prev
);
963 add_history (command
);
966 /* Safely append new history entries to the history file in a corruption-free
967 way using an intermediate local history file. */
970 gdb_safe_append_history (void)
972 int ret
, saved_errno
;
973 char *local_history_filename
;
974 struct cleanup
*old_chain
;
976 local_history_filename
977 = xstrprintf ("%s-gdb%d~", history_filename
, getpid ());
978 old_chain
= make_cleanup (xfree
, local_history_filename
);
980 ret
= rename (history_filename
, local_history_filename
);
982 if (ret
< 0 && saved_errno
!= ENOENT
)
984 warning (_("Could not rename %s to %s: %s"),
985 history_filename
, local_history_filename
,
986 safe_strerror (saved_errno
));
992 /* If the rename failed with ENOENT then either the global history
993 file never existed in the first place or another GDB process is
994 currently appending to it (and has thus temporarily renamed it).
995 Since we can't distinguish between these two cases, we have to
996 conservatively assume the first case and therefore must write out
997 (not append) our known history to our local history file and try
998 to move it back anyway. Otherwise a global history file would
999 never get created! */
1000 gdb_assert (saved_errno
== ENOENT
);
1001 write_history (local_history_filename
);
1005 append_history (command_count
, local_history_filename
);
1006 if (history_is_stifled ())
1007 history_truncate_file (local_history_filename
, history_max_entries
);
1010 ret
= rename (local_history_filename
, history_filename
);
1011 saved_errno
= errno
;
1012 if (ret
< 0 && saved_errno
!= EEXIST
)
1013 warning (_("Could not rename %s to %s: %s"),
1014 local_history_filename
, history_filename
,
1015 safe_strerror (saved_errno
));
1018 do_cleanups (old_chain
);
1021 /* Read one line from the command input stream `instream'
1022 into the local static buffer `linebuffer' (whose current length
1024 The buffer is made bigger as necessary.
1025 Returns the address of the start of the line.
1027 NULL is returned for end of file.
1029 *If* the instream == stdin & stdin is a terminal, the line read
1030 is copied into the file line saver (global var char *line,
1031 length linesize) so that it can be duplicated.
1033 This routine either uses fancy command line editing or
1034 simple input as the user has requested. */
1037 command_line_input (const char *prompt_arg
, int repeat
, char *annotation_suffix
)
1039 static char *linebuffer
= 0;
1040 static unsigned linelength
= 0;
1041 const char *prompt
= prompt_arg
;
1048 /* The annotation suffix must be non-NULL. */
1049 if (annotation_suffix
== NULL
)
1050 annotation_suffix
= "";
1052 if (annotation_level
> 1 && instream
== stdin
)
1057 = (char *) alloca ((prompt
== NULL
? 0 : strlen (prompt
))
1058 + strlen (annotation_suffix
) + 40);
1060 local_prompt
[0] = '\0';
1062 strcpy (local_prompt
, prompt
);
1063 strcat (local_prompt
, "\n\032\032");
1064 strcat (local_prompt
, annotation_suffix
);
1065 strcat (local_prompt
, "\n");
1067 prompt
= local_prompt
;
1070 if (linebuffer
== 0)
1073 linebuffer
= (char *) xmalloc (linelength
);
1078 /* Control-C quits instantly if typed while in this loop
1079 since it should not wait until the user types a newline. */
1084 signal (STOP_SIGNAL
, handle_stop_sig
);
1089 /* Make sure that all output has been output. Some machines may
1090 let you get away with leaving out some of the gdb_flush, but
1093 gdb_flush (gdb_stdout
);
1094 gdb_flush (gdb_stderr
);
1096 if (source_file_name
!= NULL
)
1097 ++source_line_number
;
1099 if (annotation_level
> 1 && instream
== stdin
)
1101 puts_unfiltered ("\n\032\032pre-");
1102 puts_unfiltered (annotation_suffix
);
1103 puts_unfiltered ("\n");
1106 /* Don't use fancy stuff if not talking to stdin. */
1107 if (deprecated_readline_hook
&& input_from_terminal_p ())
1109 rl
= (*deprecated_readline_hook
) (prompt
);
1111 else if (command_editing_p
&& input_from_terminal_p ())
1113 rl
= gdb_readline_wrapper (prompt
);
1117 rl
= gdb_readline_no_editing (prompt
);
1120 if (annotation_level
> 1 && instream
== stdin
)
1122 puts_unfiltered ("\n\032\032post-");
1123 puts_unfiltered (annotation_suffix
);
1124 puts_unfiltered ("\n");
1127 if (!rl
|| rl
== (char *) EOF
)
1132 if (strlen (rl
) + 1 + (p
- linebuffer
) > linelength
)
1134 linelength
= strlen (rl
) + 1 + (p
- linebuffer
);
1135 nline
= (char *) xrealloc (linebuffer
, linelength
);
1136 p
+= nline
- linebuffer
;
1140 /* Copy line. Don't copy null at end. (Leaves line alone
1141 if this was just a newline). */
1145 xfree (rl
); /* Allocated in readline. */
1147 if (p
== linebuffer
|| *(p
- 1) != '\\')
1150 p
--; /* Put on top of '\'. */
1156 signal (STOP_SIGNAL
, SIG_DFL
);
1163 #define SERVER_COMMAND_LENGTH 7
1165 (p
- linebuffer
> SERVER_COMMAND_LENGTH
)
1166 && strncmp (linebuffer
, "server ", SERVER_COMMAND_LENGTH
) == 0;
1169 /* Note that we don't set `line'. Between this and the check in
1170 dont_repeat, this insures that repeating will still do the
1173 return linebuffer
+ SERVER_COMMAND_LENGTH
;
1176 /* Do history expansion if that is wished. */
1177 if (history_expansion_p
&& instream
== stdin
1178 && ISATTY (instream
))
1180 char *history_value
;
1183 *p
= '\0'; /* Insert null now. */
1184 expanded
= history_expand (linebuffer
, &history_value
);
1187 /* Print the changes. */
1188 printf_unfiltered ("%s\n", history_value
);
1190 /* If there was an error, call this function again. */
1193 xfree (history_value
);
1194 return command_line_input (prompt
, repeat
,
1197 if (strlen (history_value
) > linelength
)
1199 linelength
= strlen (history_value
) + 1;
1200 linebuffer
= (char *) xrealloc (linebuffer
, linelength
);
1202 strcpy (linebuffer
, history_value
);
1203 p
= linebuffer
+ strlen (linebuffer
);
1205 xfree (history_value
);
1208 /* If we just got an empty line, and that is supposed to repeat the
1209 previous command, return the value in the global buffer. */
1210 if (repeat
&& p
== linebuffer
)
1211 return saved_command_line
;
1212 for (p1
= linebuffer
; *p1
== ' ' || *p1
== '\t'; p1
++);
1214 return saved_command_line
;
1218 /* Add line to history if appropriate. */
1219 if (*linebuffer
&& input_from_terminal_p ())
1220 gdb_add_history (linebuffer
);
1222 /* Save into global buffer if appropriate. */
1225 if (linelength
> saved_command_line_size
)
1228 = (char *) xrealloc (saved_command_line
, linelength
);
1229 saved_command_line_size
= linelength
;
1231 strcpy (saved_command_line
, linebuffer
);
1232 return saved_command_line
;
1238 /* Print the GDB banner. */
1240 print_gdb_version (struct ui_file
*stream
)
1242 /* From GNU coding standards, first line is meant to be easy for a
1243 program to parse, and is just canonical program name and version
1244 number, which starts after last space. */
1246 fprintf_filtered (stream
, "GNU gdb %s%s\n", PKGVERSION
, version
);
1248 /* Second line is a copyright notice. */
1250 fprintf_filtered (stream
,
1251 "Copyright (C) 2016 Free Software Foundation, Inc.\n");
1253 /* Following the copyright is a brief statement that the program is
1254 free software, that users are free to copy and change it on
1255 certain conditions, that it is covered by the GNU GPL, and that
1256 there is no warranty. */
1258 fprintf_filtered (stream
, "\
1259 License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>\
1260 \nThis is free software: you are free to change and redistribute it.\n\
1261 There is NO WARRANTY, to the extent permitted by law. Type \"show copying\"\n\
1262 and \"show warranty\" for details.\n");
1264 /* After the required info we print the configuration information. */
1266 fprintf_filtered (stream
, "This GDB was configured as \"");
1267 if (strcmp (host_name
, target_name
) != 0)
1269 fprintf_filtered (stream
, "--host=%s --target=%s",
1270 host_name
, target_name
);
1274 fprintf_filtered (stream
, "%s", host_name
);
1276 fprintf_filtered (stream
, "\".\n\
1277 Type \"show configuration\" for configuration details.");
1279 if (REPORT_BUGS_TO
[0])
1281 fprintf_filtered (stream
,
1282 _("\nFor bug reporting instructions, please see:\n"));
1283 fprintf_filtered (stream
, "%s.\n", REPORT_BUGS_TO
);
1285 fprintf_filtered (stream
,
1286 _("Find the GDB manual and other documentation \
1287 resources online at:\n<http://www.gnu.org/software/gdb/documentation/>.\n"));
1288 fprintf_filtered (stream
, _("For help, type \"help\".\n"));
1289 fprintf_filtered (stream
, _("Type \"apropos word\" to search for \
1290 commands related to \"word\"."));
1293 /* Print the details of GDB build-time configuration. */
1295 print_gdb_configuration (struct ui_file
*stream
)
1297 fprintf_filtered (stream
, _("\
1298 This GDB was configured as follows:\n\
1299 configure --host=%s --target=%s\n\
1300 "), host_name
, target_name
);
1301 fprintf_filtered (stream
, _("\
1302 --with-auto-load-dir=%s\n\
1303 --with-auto-load-safe-path=%s\n\
1304 "), AUTO_LOAD_DIR
, AUTO_LOAD_SAFE_PATH
);
1306 fprintf_filtered (stream
, _("\
1310 fprintf_filtered (stream
, _("\
1315 fprintf_filtered (stream
, _("\
1316 --with-gdb-datadir=%s%s\n\
1317 "), GDB_DATADIR
, GDB_DATADIR_RELOCATABLE
? " (relocatable)" : "");
1319 fprintf_filtered (stream
, _("\
1320 --with-iconv-bin=%s%s\n\
1321 "), ICONV_BIN
, ICONV_BIN_RELOCATABLE
? " (relocatable)" : "");
1323 if (JIT_READER_DIR
[0])
1324 fprintf_filtered (stream
, _("\
1325 --with-jit-reader-dir=%s%s\n\
1326 "), JIT_READER_DIR
, JIT_READER_DIR_RELOCATABLE
? " (relocatable)" : "");
1327 #if HAVE_LIBUNWIND_IA64_H
1328 fprintf_filtered (stream
, _("\
1329 --with-libunwind-ia64\n\
1332 fprintf_filtered (stream
, _("\
1333 --without-libunwind-ia64\n\
1337 fprintf_filtered (stream
, _("\
1341 fprintf_filtered (stream
, _("\
1345 #ifdef WITH_PYTHON_PATH
1346 fprintf_filtered (stream
, _("\
1347 --with-python=%s%s\n\
1348 "), WITH_PYTHON_PATH
, PYTHON_PATH_RELOCATABLE
? " (relocatable)" : "");
1351 fprintf_filtered (stream
, _("\
1355 fprintf_filtered (stream
, _("\
1360 fprintf_filtered (stream
, _("\
1361 --with-relocated-sources=%s\n\
1365 fprintf_filtered (stream
, _("\
1366 --with-separate-debug-dir=%s%s\n\
1367 "), DEBUGDIR
, DEBUGDIR_RELOCATABLE
? " (relocatable)" : "");
1368 if (TARGET_SYSTEM_ROOT
[0])
1369 fprintf_filtered (stream
, _("\
1370 --with-sysroot=%s%s\n\
1371 "), TARGET_SYSTEM_ROOT
, TARGET_SYSTEM_ROOT_RELOCATABLE
? " (relocatable)" : "");
1372 if (SYSTEM_GDBINIT
[0])
1373 fprintf_filtered (stream
, _("\
1374 --with-system-gdbinit=%s%s\n\
1375 "), SYSTEM_GDBINIT
, SYSTEM_GDBINIT_RELOCATABLE
? " (relocatable)" : "");
1376 #if HAVE_LIBBABELTRACE
1377 fprintf_filtered (stream
, _("\
1378 --with-babeltrace\n\
1381 fprintf_filtered (stream
, _("\
1382 --without-babeltrace\n\
1385 /* We assume "relocatable" will be printed at least once, thus we always
1386 print this text. It's a reasonably safe assumption for now. */
1387 fprintf_filtered (stream
, _("\n\
1388 (\"Relocatable\" means the directory can be moved with the GDB installation\n\
1389 tree, and GDB will still find it.)\n\
1394 /* The current top level prompt, settable with "set prompt", and/or
1395 with the python `gdb.prompt_hook' hook. */
1396 static char *top_prompt
;
1398 /* Access method for the GDB prompt string. */
1406 /* Set method for the GDB prompt string. */
1409 set_prompt (const char *s
)
1411 char *p
= xstrdup (s
);
1424 /* Callback for iterate_over_inferiors. Kills or detaches the given
1425 inferior, depending on how we originally gained control of it. */
1428 kill_or_detach (struct inferior
*inf
, void *args
)
1430 struct qt_args
*qt
= (struct qt_args
*) args
;
1431 struct thread_info
*thread
;
1436 thread
= any_thread_of_process (inf
->pid
);
1439 switch_to_thread (thread
->ptid
);
1441 /* Leave core files alone. */
1442 if (target_has_execution
)
1444 if (inf
->attach_flag
)
1445 target_detach (qt
->args
, qt
->from_tty
);
1454 /* Callback for iterate_over_inferiors. Prints info about what GDB
1455 will do to each inferior on a "quit". ARG points to a struct
1456 ui_out where output is to be collected. */
1459 print_inferior_quit_action (struct inferior
*inf
, void *arg
)
1461 struct ui_file
*stb
= (struct ui_file
*) arg
;
1466 if (inf
->attach_flag
)
1467 fprintf_filtered (stb
,
1468 _("\tInferior %d [%s] will be detached.\n"), inf
->num
,
1469 target_pid_to_str (pid_to_ptid (inf
->pid
)));
1471 fprintf_filtered (stb
,
1472 _("\tInferior %d [%s] will be killed.\n"), inf
->num
,
1473 target_pid_to_str (pid_to_ptid (inf
->pid
)));
1478 /* If necessary, make the user confirm that we should quit. Return
1479 non-zero if we should quit, zero if we shouldn't. */
1484 struct ui_file
*stb
;
1485 struct cleanup
*old_chain
;
1489 /* Don't even ask if we're only debugging a core file inferior. */
1490 if (!have_live_inferiors ())
1493 /* Build the query string as a single string. */
1494 stb
= mem_fileopen ();
1495 old_chain
= make_cleanup_ui_file_delete (stb
);
1497 fprintf_filtered (stb
, _("A debugging session is active.\n\n"));
1498 iterate_over_inferiors (print_inferior_quit_action
, stb
);
1499 fprintf_filtered (stb
, _("\nQuit anyway? "));
1501 str
= ui_file_xstrdup (stb
, NULL
);
1502 make_cleanup (xfree
, str
);
1504 qr
= query ("%s", str
);
1505 do_cleanups (old_chain
);
1509 /* Prepare to exit GDB cleanly by undoing any changes made to the
1510 terminal so that we leave the terminal in the state we acquired it. */
1513 undo_terminal_modifications_before_exit (void)
1515 target_terminal_ours ();
1519 if (async_command_editing_p
)
1520 gdb_disable_readline ();
1524 /* Quit without asking for confirmation. */
1527 quit_force (char *args
, int from_tty
)
1532 undo_terminal_modifications_before_exit ();
1534 /* An optional expression may be used to cause gdb to terminate with the
1535 value of that expression. */
1538 struct value
*val
= parse_and_eval (args
);
1540 exit_code
= (int) value_as_long (val
);
1542 else if (return_child_result
)
1543 exit_code
= return_child_result_value
;
1546 qt
.from_tty
= from_tty
;
1548 /* We want to handle any quit errors and exit regardless. */
1550 /* Get out of tfind mode, and kill or detach all inferiors. */
1553 disconnect_tracing ();
1554 iterate_over_inferiors (kill_or_detach
, &qt
);
1556 CATCH (ex
, RETURN_MASK_ALL
)
1558 exception_print (gdb_stderr
, ex
);
1562 /* Give all pushed targets a chance to do minimal cleanup, and pop
1568 CATCH (ex
, RETURN_MASK_ALL
)
1570 exception_print (gdb_stderr
, ex
);
1574 /* Save the history information if it is appropriate to do so. */
1577 if (write_history_p
&& history_filename
1578 && input_from_terminal_p ())
1579 gdb_safe_append_history ();
1581 CATCH (ex
, RETURN_MASK_ALL
)
1583 exception_print (gdb_stderr
, ex
);
1587 /* Do any final cleanups before exiting. */
1590 do_final_cleanups (all_cleanups ());
1592 CATCH (ex
, RETURN_MASK_ALL
)
1594 exception_print (gdb_stderr
, ex
);
1601 /* Returns whether GDB is running on a terminal and input is
1602 currently coming from that terminal. */
1605 input_from_terminal_p (void)
1610 if (gdb_has_a_terminal () && instream
== stdin
)
1613 /* If INSTREAM is unset, and we are not in a user command, we
1614 must be in Insight. That's like having a terminal, for our
1616 if (instream
== NULL
&& !in_user_command
)
1623 dont_repeat_command (char *ignored
, int from_tty
)
1625 /* Can't call dont_repeat here because we're not necessarily reading
1627 *saved_command_line
= 0;
1630 /* Functions to manipulate command line editing control variables. */
1632 /* Number of commands to print in each call to show_commands. */
1633 #define Hist_print 10
1635 show_commands (char *args
, int from_tty
)
1637 /* Index for history commands. Relative to history_base. */
1640 /* Number of the history entry which we are planning to display next.
1641 Relative to history_base. */
1644 /* Print out some of the commands from the command history. */
1648 if (args
[0] == '+' && args
[1] == '\0')
1649 /* "info editing +" should print from the stored position. */
1652 /* "info editing <exp>" should print around command number <exp>. */
1653 num
= (parse_and_eval_long (args
) - history_base
) - Hist_print
/ 2;
1655 /* "show commands" means print the last Hist_print commands. */
1658 num
= history_length
- Hist_print
;
1664 /* If there are at least Hist_print commands, we want to display the last
1665 Hist_print rather than, say, the last 6. */
1666 if (history_length
- num
< Hist_print
)
1668 num
= history_length
- Hist_print
;
1674 offset
< num
+ Hist_print
&& offset
< history_length
;
1677 printf_filtered ("%5d %s\n", history_base
+ offset
,
1678 (history_get (history_base
+ offset
))->line
);
1681 /* The next command we want to display is the next one that we haven't
1685 /* If the user repeats this command with return, it should do what
1686 "show commands +" does. This is unnecessary if arg is null,
1687 because "show commands +" is not useful after "show commands". */
1688 if (from_tty
&& args
)
1695 /* Update the size of our command history file to HISTORY_SIZE.
1697 A HISTORY_SIZE of -1 stands for unlimited. */
1700 set_readline_history_size (int history_size
)
1702 gdb_assert (history_size
>= -1);
1704 if (history_size
== -1)
1705 unstifle_history ();
1707 stifle_history (history_size
);
1710 /* Called by do_setshow_command. */
1712 set_history_size_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
1714 set_readline_history_size (history_size_setshow_var
);
1718 set_history (char *args
, int from_tty
)
1720 printf_unfiltered (_("\"set history\" must be followed "
1721 "by the name of a history subcommand.\n"));
1722 help_list (sethistlist
, "set history ", all_commands
, gdb_stdout
);
1726 show_history (char *args
, int from_tty
)
1728 cmd_show_list (showhistlist
, from_tty
, "");
1731 int info_verbose
= 0; /* Default verbose msgs off. */
1733 /* Called by do_setshow_command. An elaborate joke. */
1735 set_verbose (char *args
, int from_tty
, struct cmd_list_element
*c
)
1737 const char *cmdname
= "verbose";
1738 struct cmd_list_element
*showcmd
;
1740 showcmd
= lookup_cmd_1 (&cmdname
, showlist
, NULL
, 1);
1741 gdb_assert (showcmd
!= NULL
&& showcmd
!= CMD_LIST_AMBIGUOUS
);
1745 c
->doc
= "Set verbose printing of informational messages.";
1746 showcmd
->doc
= "Show verbose printing of informational messages.";
1750 c
->doc
= "Set verbosity.";
1751 showcmd
->doc
= "Show verbosity.";
1755 /* Init the history buffer. Note that we are called after the init file(s)
1756 have been read so that the user can change the history file via his
1757 .gdbinit file (for instance). The GDBHISTFILE environment variable
1758 overrides all of this. */
1765 tmpenv
= getenv ("GDBHISTSIZE");
1772 tmpenv
= skip_spaces (tmpenv
);
1774 var
= strtol (tmpenv
, &endptr
, 10);
1775 saved_errno
= errno
;
1776 endptr
= skip_spaces (endptr
);
1778 /* If GDBHISTSIZE is non-numeric then ignore it. If GDBHISTSIZE is the
1779 empty string, a negative number or a huge positive number (larger than
1780 INT_MAX) then set the history size to unlimited. Otherwise set our
1781 history size to the number we have read. This behavior is consistent
1782 with how bash handles HISTSIZE. */
1783 if (*endptr
!= '\0')
1785 else if (*tmpenv
== '\0'
1788 /* On targets where INT_MAX == LONG_MAX, we have to look at
1789 errno after calling strtol to distinguish between a value that
1790 is exactly INT_MAX and an overflowing value that was clamped
1792 || (var
== INT_MAX
&& saved_errno
== ERANGE
))
1793 history_size_setshow_var
= -1;
1795 history_size_setshow_var
= var
;
1798 /* If neither the init file nor GDBHISTSIZE has set a size yet, pick the
1800 if (history_size_setshow_var
== -2)
1801 history_size_setshow_var
= 256;
1803 set_readline_history_size (history_size_setshow_var
);
1805 tmpenv
= getenv ("GDBHISTFILE");
1807 history_filename
= xstrdup (tmpenv
);
1808 else if (!history_filename
)
1810 /* We include the current directory so that if the user changes
1811 directories the file written will be the same as the one
1814 /* No leading dots in file names are allowed on MSDOS. */
1815 history_filename
= concat (current_directory
, "/_gdb_history",
1818 history_filename
= concat (current_directory
, "/.gdb_history",
1822 read_history (history_filename
);
1826 show_prompt (struct ui_file
*file
, int from_tty
,
1827 struct cmd_list_element
*c
, const char *value
)
1829 fprintf_filtered (file
, _("Gdb's prompt is \"%s\".\n"), value
);
1833 show_async_command_editing_p (struct ui_file
*file
, int from_tty
,
1834 struct cmd_list_element
*c
, const char *value
)
1836 fprintf_filtered (file
, _("Editing of command lines as "
1837 "they are typed is %s.\n"),
1842 show_annotation_level (struct ui_file
*file
, int from_tty
,
1843 struct cmd_list_element
*c
, const char *value
)
1845 fprintf_filtered (file
, _("Annotation_level is %s.\n"), value
);
1849 show_exec_done_display_p (struct ui_file
*file
, int from_tty
,
1850 struct cmd_list_element
*c
, const char *value
)
1852 fprintf_filtered (file
, _("Notification of completion for "
1853 "asynchronous execution commands is %s.\n"),
1857 /* New values of the "data-directory" parameter are staged here. */
1858 static char *staged_gdb_datadir
;
1860 /* "set" command for the gdb_datadir configuration variable. */
1863 set_gdb_datadir (char *args
, int from_tty
, struct cmd_list_element
*c
)
1865 set_gdb_data_directory (staged_gdb_datadir
);
1866 observer_notify_gdb_datadir_changed ();
1869 /* "show" command for the gdb_datadir configuration variable. */
1872 show_gdb_datadir (struct ui_file
*file
, int from_tty
,
1873 struct cmd_list_element
*c
, const char *value
)
1875 fprintf_filtered (file
, _("GDB's data directory is \"%s\".\n"),
1880 set_history_filename (char *args
, int from_tty
, struct cmd_list_element
*c
)
1882 /* We include the current directory so that if the user changes
1883 directories the file written will be the same as the one
1885 if (!IS_ABSOLUTE_PATH (history_filename
))
1886 history_filename
= reconcat (history_filename
, current_directory
, "/",
1887 history_filename
, (char *) NULL
);
1893 /* Initialize the prompt to a simple "(gdb) " prompt or to whatever
1894 the DEFAULT_PROMPT is. */
1895 set_prompt (DEFAULT_PROMPT
);
1897 /* Set the important stuff up for command editing. */
1898 command_editing_p
= 1;
1899 history_expansion_p
= 0;
1900 write_history_p
= 0;
1902 /* Setup important stuff for command line editing. */
1903 rl_completion_word_break_hook
= gdb_completion_word_break_characters
;
1904 rl_completion_entry_function
= readline_line_completion_function
;
1905 rl_completer_word_break_characters
= default_word_break_characters ();
1906 rl_completer_quote_characters
= get_gdb_completer_quote_characters ();
1907 rl_completion_display_matches_hook
= cli_display_match_list
;
1908 rl_readline_name
= "gdb";
1909 rl_terminal_name
= getenv ("TERM");
1911 /* The name for this defun comes from Bash, where it originated.
1912 15 is Control-o, the same binding this function has in Bash. */
1913 rl_add_defun ("operate-and-get-next", gdb_rl_operate_and_get_next
, 15);
1915 add_setshow_string_cmd ("prompt", class_support
,
1917 _("Set gdb's prompt"),
1918 _("Show gdb's prompt"),
1921 &setlist
, &showlist
);
1923 add_com ("dont-repeat", class_support
, dont_repeat_command
, _("\
1924 Don't repeat this command.\nPrimarily \
1925 used inside of user-defined commands that should not be repeated when\n\
1928 add_setshow_boolean_cmd ("editing", class_support
,
1929 &async_command_editing_p
, _("\
1930 Set editing of command lines as they are typed."), _("\
1931 Show editing of command lines as they are typed."), _("\
1932 Use \"on\" to enable the editing, and \"off\" to disable it.\n\
1933 Without an argument, command line editing is enabled. To edit, use\n\
1934 EMACS-like or VI-like commands like control-P or ESC."),
1935 set_async_editing_command
,
1936 show_async_command_editing_p
,
1937 &setlist
, &showlist
);
1939 add_setshow_boolean_cmd ("save", no_class
, &write_history_p
, _("\
1940 Set saving of the history record on exit."), _("\
1941 Show saving of the history record on exit."), _("\
1942 Use \"on\" to enable the saving, and \"off\" to disable it.\n\
1943 Without an argument, saving is enabled."),
1945 show_write_history_p
,
1946 &sethistlist
, &showhistlist
);
1948 add_setshow_zuinteger_unlimited_cmd ("size", no_class
,
1949 &history_size_setshow_var
, _("\
1950 Set the size of the command history,"), _("\
1951 Show the size of the command history,"), _("\
1952 ie. the number of previous commands to keep a record of.\n\
1953 If set to \"unlimited\", the number of commands kept in the history\n\
1954 list is unlimited. This defaults to the value of the environment\n\
1955 variable \"GDBHISTSIZE\", or to 256 if this variable is not set."),
1956 set_history_size_command
,
1958 &sethistlist
, &showhistlist
);
1960 add_setshow_zuinteger_unlimited_cmd ("remove-duplicates", no_class
,
1961 &history_remove_duplicates
, _("\
1962 Set how far back in history to look for and remove duplicate entries."), _("\
1963 Show how far back in history to look for and remove duplicate entries."), _("\
1964 If set to a nonzero value N, GDB will look back at the last N history entries\n\
1965 and remove the first history entry that is a duplicate of the most recent\n\
1966 entry, each time a new history entry is added.\n\
1967 If set to \"unlimited\", this lookbehind is unbounded.\n\
1968 Only history entries added during this session are considered for removal.\n\
1969 If set to 0, removal of duplicate history entries is disabled.\n\
1970 By default this option is set to 0."),
1972 show_history_remove_duplicates
,
1973 &sethistlist
, &showhistlist
);
1975 add_setshow_filename_cmd ("filename", no_class
, &history_filename
, _("\
1976 Set the filename in which to record the command history"), _("\
1977 Show the filename in which to record the command history"), _("\
1978 (the list of previous commands of which a record is kept)."),
1979 set_history_filename
,
1980 show_history_filename
,
1981 &sethistlist
, &showhistlist
);
1983 add_setshow_boolean_cmd ("confirm", class_support
, &confirm
, _("\
1984 Set whether to confirm potentially dangerous operations."), _("\
1985 Show whether to confirm potentially dangerous operations."), NULL
,
1988 &setlist
, &showlist
);
1990 add_setshow_zinteger_cmd ("annotate", class_obscure
, &annotation_level
, _("\
1991 Set annotation_level."), _("\
1992 Show annotation_level."), _("\
1993 0 == normal; 1 == fullname (for use when running under emacs)\n\
1994 2 == output annotated suitably for use by programs that control GDB."),
1996 show_annotation_level
,
1997 &setlist
, &showlist
);
1999 add_setshow_boolean_cmd ("exec-done-display", class_support
,
2000 &exec_done_display_p
, _("\
2001 Set notification of completion for asynchronous execution commands."), _("\
2002 Show notification of completion for asynchronous execution commands."), _("\
2003 Use \"on\" to enable the notification, and \"off\" to disable it."),
2005 show_exec_done_display_p
,
2006 &setlist
, &showlist
);
2008 add_setshow_filename_cmd ("data-directory", class_maintenance
,
2009 &staged_gdb_datadir
, _("Set GDB's data directory."),
2010 _("Show GDB's data directory."),
2012 When set, GDB uses the specified path to search for data files."),
2013 set_gdb_datadir
, show_gdb_datadir
,
2019 gdb_init (char *argv0
)
2021 if (pre_init_ui_hook
)
2022 pre_init_ui_hook ();
2024 /* Run the init function of each source file. */
2027 /* Make sure we return to the original directory upon exit, come
2028 what may, since the OS doesn't do that for us. */
2029 make_final_cleanup (do_chdir_cleanup
, xstrdup (current_directory
));
2032 init_cmd_lists (); /* This needs to be done first. */
2033 initialize_targets (); /* Setup target_terminal macros for utils.c. */
2034 initialize_utils (); /* Make errors and warnings possible. */
2038 /* Here is where we call all the _initialize_foo routines. */
2039 initialize_all_files ();
2041 /* This creates the current_program_space. Do this after all the
2042 _initialize_foo routines have had a chance to install their
2043 per-sspace data keys. Also do this before
2044 initialize_current_architecture is called, because it accesses
2045 exec_bfd of the current program space. */
2046 initialize_progspace ();
2047 initialize_inferiors ();
2048 initialize_current_architecture ();
2050 init_main (); /* But that omits this file! Do it now. */
2052 initialize_stdin_serial ();
2054 /* Take a snapshot of our tty state before readline/ncurses have had a chance
2056 set_initial_gdb_ttystate ();
2058 async_init_signals ();
2060 /* We need a default language for parsing expressions, so simple
2061 things like "set width 0" won't fail if no language is explicitly
2062 set in a config file or implicitly set by reading an executable
2064 set_language (language_c
);
2065 expected_language
= current_language
; /* Don't warn about the change. */
2067 /* Python initialization, for example, can require various commands to be
2068 installed. For example "info pretty-printer" needs the "info"
2069 prefix to be installed. Keep things simple and just do final
2070 script initialization here. */
2071 finish_ext_lang_initialization ();