1 /* Top level stuff for GDB, the GNU debugger.
3 Copyright (C) 1986-2013 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
22 #include "cli/cli-cmds.h"
23 #include "cli/cli-script.h"
24 #include "cli/cli-setshow.h"
25 #include "cli/cli-decode.h"
28 #include "exceptions.h"
31 #include "breakpoint.h"
33 #include "expression.h"
36 #include "terminal.h" /* For job_control. */
38 #include "completer.h"
43 #include "gdb_assert.h"
45 #include "event-loop.h"
46 #include "gdbthread.h"
47 #include "python/python.h"
52 /* readline include files. */
53 #include "readline/readline.h"
54 #include "readline/history.h"
56 /* readline defines this. */
59 #include <sys/types.h>
61 #include "event-top.h"
62 #include "gdb_string.h"
67 #include "tracepoint.h"
69 extern void initialize_all_files (void);
71 #define PROMPT(X) the_prompts.prompt_stack[the_prompts.top + X].prompt
72 #define PREFIX(X) the_prompts.prompt_stack[the_prompts.top + X].prefix
73 #define SUFFIX(X) the_prompts.prompt_stack[the_prompts.top + X].suffix
75 /* Default command line prompt. This is overriden in some configs. */
77 #ifndef DEFAULT_PROMPT
78 #define DEFAULT_PROMPT "(gdb) "
81 /* Initialization file name for gdb. This is host-dependent. */
83 const char gdbinit
[] = GDBINIT
;
85 int inhibit_gdbinit
= 0;
87 /* If nonzero, and GDB has been configured to be able to use windows,
88 attempt to open them upon startup. */
92 extern char lang_frame_mismatch_warn
[]; /* language.c */
94 /* Flag for whether we want to confirm potentially dangerous
95 operations. Default is yes. */
100 show_confirm (struct ui_file
*file
, int from_tty
,
101 struct cmd_list_element
*c
, const char *value
)
103 fprintf_filtered (file
, _("Whether to confirm potentially "
104 "dangerous operations is %s.\n"),
108 /* stdio stream that command input is being read from. Set to stdin
109 normally. Set by source_command to the file we are sourcing. Set
110 to NULL if we are executing a user-defined command or interacting
115 /* Flag to indicate whether a user defined command is currently running. */
119 /* Current working directory. */
121 char *current_directory
;
123 /* The directory name is actually stored here (usually). */
124 char gdb_dirbuf
[1024];
126 /* Function to call before reading a command, if nonzero.
127 The function receives two args: an input stream,
128 and a prompt string. */
130 void (*window_hook
) (FILE *, char *);
132 /* Buffer used for reading command lines, and the size
133 allocated for it so far. */
135 char *saved_command_line
;
136 int saved_command_line_size
= 100;
138 /* Nonzero if the current command is modified by "server ". This
139 affects things like recording into the command history, commands
140 repeating on RETURN, etc. This is so a user interface (emacs, GUI,
141 whatever) can issue its own commands and also send along commands
142 from the user, and have the user not notice that the user interface
143 is issuing commands too. */
146 /* Baud rate specified for talking to serial target systems. Default
147 is left as -1, so targets can choose their own defaults. */
148 /* FIXME: This means that "show remotebaud" and gr_files_info can
149 print -1 or (unsigned int)-1. This is a Bad User Interface. */
153 /* Timeout limit for response from target. */
155 /* The default value has been changed many times over the years. It
156 was originally 5 seconds. But that was thought to be a long time
157 to sit and wait, so it was changed to 2 seconds. That was thought
158 to be plenty unless the connection was going through some terminal
159 server or multiplexer or other form of hairy serial connection.
161 In mid-1996, remote_timeout was moved from remote.c to top.c and
162 it began being used in other remote-* targets. It appears that the
163 default was changed to 20 seconds at that time, perhaps because the
164 Renesas E7000 ICE didn't always respond in a timely manner.
166 But if 5 seconds is a long time to sit and wait for retransmissions,
167 20 seconds is far worse. This demonstrates the difficulty of using
168 a single variable for all protocol timeouts.
170 As remote.c is used much more than remote-e7000.c, it was changed
171 back to 2 seconds in 1999. */
173 int remote_timeout
= 2;
175 /* Non-zero tells remote* modules to output debugging info. */
177 int remote_debug
= 0;
179 /* Sbrk location on entry to main. Used for statistics only. */
184 /* Hooks for alternate command interfaces. */
186 /* Called after most modules have been initialized, but before taking
189 If the UI fails to initialize and it wants GDB to continue using
190 the default UI, then it should clear this hook before returning. */
192 void (*deprecated_init_ui_hook
) (char *argv0
);
194 /* This hook is called from within gdb's many mini-event loops which
195 could steal control from a real user interface's event loop. It
196 returns non-zero if the user is requesting a detach, zero
199 int (*deprecated_ui_loop_hook
) (int);
201 /* Called instead of command_loop at top level. Can be invoked via
202 throw_exception(). */
204 void (*deprecated_command_loop_hook
) (void);
207 /* Called from print_frame_info to list the line we stopped in. */
209 void (*deprecated_print_frame_info_listing_hook
) (struct symtab
* s
,
213 /* Replaces most of query. */
215 int (*deprecated_query_hook
) (const char *, va_list);
217 /* Replaces most of warning. */
219 void (*deprecated_warning_hook
) (const char *, va_list);
221 /* These three functions support getting lines of text from the user.
222 They are used in sequence. First deprecated_readline_begin_hook is
223 called with a text string that might be (for example) a message for
224 the user to type in a sequence of commands to be executed at a
225 breakpoint. If this function calls back to a GUI, it might take
226 this opportunity to pop up a text interaction window with this
227 message. Next, deprecated_readline_hook is called with a prompt
228 that is emitted prior to collecting the user input. It can be
229 called multiple times. Finally, deprecated_readline_end_hook is
230 called to notify the GUI that we are done with the interaction
231 window and it can close it. */
233 void (*deprecated_readline_begin_hook
) (char *, ...);
234 char *(*deprecated_readline_hook
) (char *);
235 void (*deprecated_readline_end_hook
) (void);
237 /* Called as appropriate to notify the interface that we have attached
238 to or detached from an already running process. */
240 void (*deprecated_attach_hook
) (void);
241 void (*deprecated_detach_hook
) (void);
243 /* Called during long calculations to allow GUI to repair window
244 damage, and to check for stop buttons, etc... */
246 void (*deprecated_interactive_hook
) (void);
248 /* Tell the GUI someone changed the register REGNO. -1 means
249 that the caller does not know which register changed or
250 that several registers have changed (see value_assign). */
251 void (*deprecated_register_changed_hook
) (int regno
);
253 /* Called when going to wait for the target. Usually allows the GUI
254 to run while waiting for target events. */
256 ptid_t (*deprecated_target_wait_hook
) (ptid_t ptid
,
257 struct target_waitstatus
*status
,
260 /* Used by UI as a wrapper around command execution. May do various
261 things like enabling/disabling buttons, etc... */
263 void (*deprecated_call_command_hook
) (struct cmd_list_element
* c
,
264 char *cmd
, int from_tty
);
266 /* Called after a `set' command has finished. Is only run if the
267 `set' command succeeded. */
269 void (*deprecated_set_hook
) (struct cmd_list_element
* c
);
271 /* Called when the current thread changes. Argument is thread id. */
273 void (*deprecated_context_hook
) (int id
);
275 /* Handler for SIGHUP. */
278 /* NOTE 1999-04-29: This function will be static again, once we modify
279 gdb to use the event loop as the default command loop and we merge
280 event-top.c into this file, top.c. */
284 /* Stop asking user for confirmation --- we're exiting. This
285 prevents asking the user dumb questions. */
287 quit_command ((char *) 0, 0);
289 #endif /* defined SIGHUP */
291 /* Line number we are currently in, in a file which is being sourced. */
292 /* NOTE 1999-04-29: This variable will be static again, once we modify
293 gdb to use the event loop as the default command loop and we merge
294 event-top.c into this file, top.c. */
295 /* static */ int source_line_number
;
297 /* Name of the file we are sourcing. */
298 /* NOTE 1999-04-29: This variable will be static again, once we modify
299 gdb to use the event loop as the default command loop and we merge
300 event-top.c into this file, top.c. */
301 /* static */ const char *source_file_name
;
303 /* Clean up on error during a "source" command (or execution of a
304 user-defined command). */
307 do_restore_instream_cleanup (void *stream
)
309 /* Restore the previous input stream. */
313 /* Read commands from STREAM. */
315 read_command_file (FILE *stream
)
317 struct cleanup
*cleanups
;
319 cleanups
= make_cleanup (do_restore_instream_cleanup
, instream
);
322 do_cleanups (cleanups
);
325 void (*pre_init_ui_hook
) (void);
329 do_chdir_cleanup (void *old_dir
)
337 prepare_execute_command (void)
340 struct cleanup
*cleanup
;
342 mark
= value_mark ();
343 cleanup
= make_cleanup_value_free_to_mark (mark
);
345 /* With multiple threads running while the one we're examining is
346 stopped, the dcache can get stale without us being able to detect
347 it. For the duration of the command, though, use the dcache to
348 help things like backtrace. */
350 target_dcache_invalidate ();
355 /* Tell the user if the language has changed (except first time) after
356 executing a command. */
359 check_frame_language_change (void)
361 static int warned
= 0;
363 /* First make sure that a new frame has been selected, in case the
364 command or the hooks changed the program state. */
365 deprecated_safe_get_selected_frame ();
366 if (current_language
!= expected_language
)
368 if (language_mode
== language_mode_auto
&& info_verbose
)
370 language_info (1); /* Print what changed. */
375 /* Warn the user if the working language does not match the language
376 of the current frame. Only warn the user if we are actually
377 running the program, i.e. there is a stack. */
378 /* FIXME: This should be cacheing the frame and only running when
379 the frame changes. */
381 if (has_stack_frames ())
385 flang
= get_frame_language ();
387 && flang
!= language_unknown
388 && flang
!= current_language
->la_language
)
390 printf_filtered ("%s\n", lang_frame_mismatch_warn
);
396 /* Execute the line P as a command, in the current user context.
397 Pass FROM_TTY as second argument to the defining function. */
400 execute_command (char *p
, int from_tty
)
402 struct cleanup
*cleanup_if_error
, *cleanup
;
403 struct cmd_list_element
*c
;
406 cleanup_if_error
= make_bpstat_clear_actions_cleanup ();
407 cleanup
= prepare_execute_command ();
409 /* Force cleanup of any alloca areas if using C alloca instead of
413 /* This can happen when command_line_input hits end of file. */
416 do_cleanups (cleanup
);
417 discard_cleanups (cleanup_if_error
);
421 target_log_command (p
);
423 while (*p
== ' ' || *p
== '\t')
431 /* If trace-commands is set then this will print this command. */
432 print_command_trace (p
);
434 c
= lookup_cmd (&cmd
, cmdlist
, "", 0, 1);
437 /* Pass null arg rather than an empty one. */
440 /* FIXME: cagney/2002-02-02: The c->type test is pretty dodgy
441 while the is_complete_command(cfunc) test is just plain
442 bogus. They should both be replaced by a test of the form
443 c->strip_trailing_white_space_p. */
444 /* NOTE: cagney/2002-02-02: The function.cfunc in the below
445 can't be replaced with func. This is because it is the
446 cfunc, and not the func, that has the value that the
447 is_complete_command hack is testing for. */
448 /* Clear off trailing whitespace, except for set and complete
451 && c
->type
!= set_cmd
452 && !is_complete_command (c
))
454 p
= arg
+ strlen (arg
) - 1;
455 while (p
>= arg
&& (*p
== ' ' || *p
== '\t'))
460 /* If this command has been pre-hooked, run the hook first. */
461 execute_cmd_pre_hook (c
);
463 if (c
->flags
& DEPRECATED_WARN_USER
)
464 deprecated_cmd_warning (line
);
466 /* c->user_commands would be NULL in the case of a python command. */
467 if (c
->class == class_user
&& c
->user_commands
)
468 execute_user_command (c
, arg
);
469 else if (c
->type
== set_cmd
)
470 do_set_command (arg
, from_tty
, c
);
471 else if (c
->type
== show_cmd
)
472 do_show_command (arg
, from_tty
, c
);
473 else if (!cmd_func_p (c
))
474 error (_("That is not a command, just a help topic."));
475 else if (deprecated_call_command_hook
)
476 deprecated_call_command_hook (c
, arg
, from_tty
);
478 cmd_func (c
, arg
, from_tty
);
480 /* If the interpreter is in sync mode (we're running a user
481 command's list, running command hooks or similars), and we
482 just ran a synchronous command that started the target, wait
483 for that command to end. */
484 if (!interpreter_async
&& sync_execution
)
486 while (gdb_do_one_event () >= 0)
491 /* If this command has been post-hooked, run the hook last. */
492 execute_cmd_post_hook (c
);
496 check_frame_language_change ();
498 do_cleanups (cleanup
);
499 discard_cleanups (cleanup_if_error
);
502 /* Run execute_command for P and FROM_TTY. Capture its output into the
503 returned string, do not display it to the screen. BATCH_FLAG will be
504 temporarily set to true. */
507 execute_command_to_string (char *p
, int from_tty
)
509 struct ui_file
*str_file
;
510 struct cleanup
*cleanup
;
513 /* GDB_STDOUT should be better already restored during these
514 restoration callbacks. */
515 cleanup
= set_batch_flag_and_make_cleanup_restore_page_info ();
517 make_cleanup_restore_integer (&interpreter_async
);
518 interpreter_async
= 0;
520 str_file
= mem_fileopen ();
522 make_cleanup_ui_file_delete (str_file
);
523 make_cleanup_restore_ui_file (&gdb_stdout
);
524 make_cleanup_restore_ui_file (&gdb_stderr
);
525 make_cleanup_restore_ui_file (&gdb_stdlog
);
526 make_cleanup_restore_ui_file (&gdb_stdtarg
);
527 make_cleanup_restore_ui_file (&gdb_stdtargerr
);
529 if (ui_out_redirect (current_uiout
, str_file
) < 0)
530 warning (_("Current output protocol does not support redirection"));
532 make_cleanup_ui_out_redirect_pop (current_uiout
);
534 gdb_stdout
= str_file
;
535 gdb_stderr
= str_file
;
536 gdb_stdlog
= str_file
;
537 gdb_stdtarg
= str_file
;
538 gdb_stdtargerr
= str_file
;
540 execute_command (p
, from_tty
);
542 retval
= ui_file_xstrdup (str_file
, NULL
);
544 do_cleanups (cleanup
);
549 /* Read commands from `instream' and execute them
550 until end of file or error reading instream. */
555 struct cleanup
*old_chain
;
557 int stdin_is_tty
= ISATTY (stdin
);
559 while (instream
&& !feof (instream
))
561 if (window_hook
&& instream
== stdin
)
562 (*window_hook
) (instream
, get_prompt ());
565 if (instream
== stdin
&& stdin_is_tty
)
566 reinitialize_more_filter ();
567 old_chain
= make_cleanup (null_cleanup
, 0);
569 /* Get a command-line. This calls the readline package. */
570 command
= command_line_input (instream
== stdin
?
571 get_prompt () : (char *) NULL
,
572 instream
== stdin
, "prompt");
575 do_cleanups (old_chain
);
579 make_command_stats_cleanup (1);
581 execute_command (command
, instream
== stdin
);
583 /* Do any commands attached to breakpoint we are stopped at. */
584 bpstat_do_actions ();
586 do_cleanups (old_chain
);
590 /* When nonzero, cause dont_repeat to do nothing. This should only be
591 set via prevent_dont_repeat. */
593 static int suppress_dont_repeat
= 0;
595 /* Commands call this if they do not want to be repeated by null lines. */
600 if (suppress_dont_repeat
|| server_command
)
603 /* If we aren't reading from standard input, we are saving the last
604 thing read from stdin in line and don't want to delete it. Null
605 lines won't repeat here in any case. */
606 if (instream
== stdin
)
607 *saved_command_line
= 0;
610 /* Prevent dont_repeat from working, and return a cleanup that
611 restores the previous state. */
614 prevent_dont_repeat (void)
616 struct cleanup
*result
= make_cleanup_restore_integer (&suppress_dont_repeat
);
618 suppress_dont_repeat
= 1;
623 /* Read a line from the stream "instream" without command line editing.
625 It prints PROMPT_ARG once at the start.
626 Action is compatible with "readline", e.g. space for the result is
627 malloc'd and should be freed by the caller.
629 A NULL return means end of file. */
631 gdb_readline (char *prompt_arg
)
636 int result_size
= 80;
640 /* Don't use a _filtered function here. It causes the assumed
641 character position to be off, since the newline we read from
642 the user is not accounted for. */
643 fputs_unfiltered (prompt_arg
, gdb_stdout
);
644 gdb_flush (gdb_stdout
);
647 result
= (char *) xmalloc (result_size
);
651 /* Read from stdin if we are executing a user defined command.
652 This is the right thing for prompt_for_continue, at least. */
653 c
= fgetc (instream
? instream
: stdin
);
658 /* The last line does not end with a newline. Return it, and
659 if we are called again fgetc will still return EOF and
660 we'll return NULL then. */
668 if (input_index
> 0 && result
[input_index
- 1] == '\r')
673 result
[input_index
++] = c
;
674 while (input_index
>= result_size
)
677 result
= (char *) xrealloc (result
, result_size
);
681 result
[input_index
++] = '\0';
685 /* Variables which control command line editing and history
686 substitution. These variables are given default values at the end
688 static int command_editing_p
;
690 /* NOTE 1999-04-29: This variable will be static again, once we modify
691 gdb to use the event loop as the default command loop and we merge
692 event-top.c into this file, top.c. */
694 /* static */ int history_expansion_p
;
696 static int write_history_p
;
698 show_write_history_p (struct ui_file
*file
, int from_tty
,
699 struct cmd_list_element
*c
, const char *value
)
701 fprintf_filtered (file
, _("Saving of the history record on exit is %s.\n"),
705 /* The variable associated with the "set/show history size"
707 static unsigned int history_size_setshow_var
;
710 show_history_size (struct ui_file
*file
, int from_tty
,
711 struct cmd_list_element
*c
, const char *value
)
713 fprintf_filtered (file
, _("The size of the command history is %s.\n"),
717 static char *history_filename
;
719 show_history_filename (struct ui_file
*file
, int from_tty
,
720 struct cmd_list_element
*c
, const char *value
)
722 fprintf_filtered (file
, _("The filename in which to record "
723 "the command history is \"%s\".\n"),
727 /* This is like readline(), but it has some gdb-specific behavior.
728 gdb may want readline in both the synchronous and async modes during
729 a single gdb invocation. At the ordinary top-level prompt we might
730 be using the async readline. That means we can't use
731 rl_pre_input_hook, since it doesn't work properly in async mode.
732 However, for a secondary prompt (" >", such as occurs during a
733 `define'), gdb wants a synchronous response.
735 We used to call readline() directly, running it in synchronous
736 mode. But mixing modes this way is not supported, and as of
737 readline 5.x it no longer works; the arrow keys come unbound during
738 the synchronous call. So we make a nested call into the event
739 loop. That's what gdb_readline_wrapper is for. */
741 /* A flag set as soon as gdb_readline_wrapper_line is called; we can't
742 rely on gdb_readline_wrapper_result, which might still be NULL if
743 the user types Control-D for EOF. */
744 static int gdb_readline_wrapper_done
;
746 /* The result of the current call to gdb_readline_wrapper, once a newline
748 static char *gdb_readline_wrapper_result
;
750 /* Any intercepted hook. Operate-and-get-next sets this, expecting it
751 to be called after the newline is processed (which will redisplay
752 the prompt). But in gdb_readline_wrapper we will not get a new
753 prompt until the next call, or until we return to the event loop.
754 So we disable this hook around the newline and restore it before we
756 static void (*saved_after_char_processing_hook
) (void);
758 /* This function is called when readline has seen a complete line of
762 gdb_readline_wrapper_line (char *line
)
764 gdb_assert (!gdb_readline_wrapper_done
);
765 gdb_readline_wrapper_result
= line
;
766 gdb_readline_wrapper_done
= 1;
768 /* Prevent operate-and-get-next from acting too early. */
769 saved_after_char_processing_hook
= after_char_processing_hook
;
770 after_char_processing_hook
= NULL
;
772 /* Prevent parts of the prompt from being redisplayed if annotations
773 are enabled, and readline's state getting out of sync. */
774 if (async_command_editing_p
)
775 rl_callback_handler_remove ();
778 struct gdb_readline_wrapper_cleanup
780 void (*handler_orig
) (char *);
781 int already_prompted_orig
;
785 gdb_readline_wrapper_cleanup (void *arg
)
787 struct gdb_readline_wrapper_cleanup
*cleanup
= arg
;
789 rl_already_prompted
= cleanup
->already_prompted_orig
;
791 gdb_assert (input_handler
== gdb_readline_wrapper_line
);
792 input_handler
= cleanup
->handler_orig
;
793 gdb_readline_wrapper_result
= NULL
;
794 gdb_readline_wrapper_done
= 0;
796 after_char_processing_hook
= saved_after_char_processing_hook
;
797 saved_after_char_processing_hook
= NULL
;
803 gdb_readline_wrapper (char *prompt
)
805 struct cleanup
*back_to
;
806 struct gdb_readline_wrapper_cleanup
*cleanup
;
809 cleanup
= xmalloc (sizeof (*cleanup
));
810 cleanup
->handler_orig
= input_handler
;
811 input_handler
= gdb_readline_wrapper_line
;
813 cleanup
->already_prompted_orig
= rl_already_prompted
;
815 back_to
= make_cleanup (gdb_readline_wrapper_cleanup
, cleanup
);
817 /* Display our prompt and prevent double prompt display. */
818 display_gdb_prompt (prompt
);
819 rl_already_prompted
= 1;
821 if (after_char_processing_hook
)
822 (*after_char_processing_hook
) ();
823 gdb_assert (after_char_processing_hook
== NULL
);
825 while (gdb_do_one_event () >= 0)
826 if (gdb_readline_wrapper_done
)
829 retval
= gdb_readline_wrapper_result
;
830 do_cleanups (back_to
);
835 /* The current saved history number from operate-and-get-next.
836 This is -1 if not valid. */
837 static int operate_saved_history
= -1;
839 /* This is put on the appropriate hook and helps operate-and-get-next
842 gdb_rl_operate_and_get_next_completion (void)
844 int delta
= where_history () - operate_saved_history
;
846 /* The `key' argument to rl_get_previous_history is ignored. */
847 rl_get_previous_history (delta
, 0);
848 operate_saved_history
= -1;
850 /* readline doesn't automatically update the display for us. */
853 after_char_processing_hook
= NULL
;
854 rl_pre_input_hook
= NULL
;
857 /* This is a gdb-local readline command handler. It accepts the
858 current command line (like RET does) and, if this command was taken
859 from the history, arranges for the next command in the history to
860 appear on the command line when the prompt returns.
861 We ignore the arguments. */
863 gdb_rl_operate_and_get_next (int count
, int key
)
867 /* Use the async hook. */
868 after_char_processing_hook
= gdb_rl_operate_and_get_next_completion
;
870 /* Find the current line, and find the next line to use. */
871 where
= where_history();
873 if ((history_is_stifled () && (history_length
>= history_max_entries
))
874 || (where
>= history_length
- 1))
875 operate_saved_history
= where
;
877 operate_saved_history
= where
+ 1;
879 return rl_newline (1, key
);
882 /* Read one line from the command input stream `instream'
883 into the local static buffer `linebuffer' (whose current length
885 The buffer is made bigger as necessary.
886 Returns the address of the start of the line.
888 NULL is returned for end of file.
890 *If* the instream == stdin & stdin is a terminal, the line read
891 is copied into the file line saver (global var char *line,
892 length linesize) so that it can be duplicated.
894 This routine either uses fancy command line editing or
895 simple input as the user has requested. */
898 command_line_input (char *prompt_arg
, int repeat
, char *annotation_suffix
)
900 static char *linebuffer
= 0;
901 static unsigned linelength
= 0;
905 char *local_prompt
= prompt_arg
;
909 /* The annotation suffix must be non-NULL. */
910 if (annotation_suffix
== NULL
)
911 annotation_suffix
= "";
913 if (annotation_level
> 1 && instream
== stdin
)
915 local_prompt
= alloca ((prompt_arg
== NULL
? 0 : strlen (prompt_arg
))
916 + strlen (annotation_suffix
) + 40);
917 if (prompt_arg
== NULL
)
918 local_prompt
[0] = '\0';
920 strcpy (local_prompt
, prompt_arg
);
921 strcat (local_prompt
, "\n\032\032");
922 strcat (local_prompt
, annotation_suffix
);
923 strcat (local_prompt
, "\n");
929 linebuffer
= (char *) xmalloc (linelength
);
934 /* Control-C quits instantly if typed while in this loop
935 since it should not wait until the user types a newline. */
940 signal (STOP_SIGNAL
, handle_stop_sig
);
945 /* Make sure that all output has been output. Some machines may
946 let you get away with leaving out some of the gdb_flush, but
949 gdb_flush (gdb_stdout
);
950 gdb_flush (gdb_stderr
);
952 if (source_file_name
!= NULL
)
953 ++source_line_number
;
955 if (annotation_level
> 1 && instream
== stdin
)
957 puts_unfiltered ("\n\032\032pre-");
958 puts_unfiltered (annotation_suffix
);
959 puts_unfiltered ("\n");
962 /* Don't use fancy stuff if not talking to stdin. */
963 if (deprecated_readline_hook
&& input_from_terminal_p ())
965 rl
= (*deprecated_readline_hook
) (local_prompt
);
967 else if (command_editing_p
&& input_from_terminal_p ())
969 rl
= gdb_readline_wrapper (local_prompt
);
973 rl
= gdb_readline (local_prompt
);
976 if (annotation_level
> 1 && instream
== stdin
)
978 puts_unfiltered ("\n\032\032post-");
979 puts_unfiltered (annotation_suffix
);
980 puts_unfiltered ("\n");
983 if (!rl
|| rl
== (char *) EOF
)
988 if (strlen (rl
) + 1 + (p
- linebuffer
) > linelength
)
990 linelength
= strlen (rl
) + 1 + (p
- linebuffer
);
991 nline
= (char *) xrealloc (linebuffer
, linelength
);
992 p
+= nline
- linebuffer
;
996 /* Copy line. Don't copy null at end. (Leaves line alone
997 if this was just a newline). */
1001 xfree (rl
); /* Allocated in readline. */
1003 if (p
== linebuffer
|| *(p
- 1) != '\\')
1006 p
--; /* Put on top of '\'. */
1007 local_prompt
= (char *) 0;
1012 signal (STOP_SIGNAL
, SIG_DFL
);
1019 #define SERVER_COMMAND_LENGTH 7
1021 (p
- linebuffer
> SERVER_COMMAND_LENGTH
)
1022 && strncmp (linebuffer
, "server ", SERVER_COMMAND_LENGTH
) == 0;
1025 /* Note that we don't set `line'. Between this and the check in
1026 dont_repeat, this insures that repeating will still do the
1029 return linebuffer
+ SERVER_COMMAND_LENGTH
;
1032 /* Do history expansion if that is wished. */
1033 if (history_expansion_p
&& instream
== stdin
1034 && ISATTY (instream
))
1036 char *history_value
;
1039 *p
= '\0'; /* Insert null now. */
1040 expanded
= history_expand (linebuffer
, &history_value
);
1043 /* Print the changes. */
1044 printf_unfiltered ("%s\n", history_value
);
1046 /* If there was an error, call this function again. */
1049 xfree (history_value
);
1050 return command_line_input (prompt_arg
, repeat
,
1053 if (strlen (history_value
) > linelength
)
1055 linelength
= strlen (history_value
) + 1;
1056 linebuffer
= (char *) xrealloc (linebuffer
, linelength
);
1058 strcpy (linebuffer
, history_value
);
1059 p
= linebuffer
+ strlen (linebuffer
);
1061 xfree (history_value
);
1064 /* If we just got an empty line, and that is supposed to repeat the
1065 previous command, return the value in the global buffer. */
1066 if (repeat
&& p
== linebuffer
)
1067 return saved_command_line
;
1068 for (p1
= linebuffer
; *p1
== ' ' || *p1
== '\t'; p1
++);
1070 return saved_command_line
;
1074 /* Add line to history if appropriate. */
1075 if (instream
== stdin
1076 && ISATTY (stdin
) && *linebuffer
)
1077 add_history (linebuffer
);
1079 /* Note: lines consisting solely of comments are added to the command
1080 history. This is useful when you type a command, and then
1081 realize you don't want to execute it quite yet. You can comment
1082 out the command and then later fetch it from the value history
1083 and remove the '#'. The kill ring is probably better, but some
1084 people are in the habit of commenting things out. */
1086 *p1
= '\0'; /* Found a comment. */
1088 /* Save into global buffer if appropriate. */
1091 if (linelength
> saved_command_line_size
)
1093 saved_command_line
= xrealloc (saved_command_line
, linelength
);
1094 saved_command_line_size
= linelength
;
1096 strcpy (saved_command_line
, linebuffer
);
1097 return saved_command_line
;
1103 /* Print the GDB banner. */
1105 print_gdb_version (struct ui_file
*stream
)
1107 /* From GNU coding standards, first line is meant to be easy for a
1108 program to parse, and is just canonical program name and version
1109 number, which starts after last space. */
1111 fprintf_filtered (stream
, "GNU gdb %s%s\n", PKGVERSION
, version
);
1113 /* Second line is a copyright notice. */
1115 fprintf_filtered (stream
,
1116 "Copyright (C) 2013 Free Software Foundation, Inc.\n");
1118 /* Following the copyright is a brief statement that the program is
1119 free software, that users are free to copy and change it on
1120 certain conditions, that it is covered by the GNU GPL, and that
1121 there is no warranty. */
1123 fprintf_filtered (stream
, "\
1124 License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>\
1125 \nThis is free software: you are free to change and redistribute it.\n\
1126 There is NO WARRANTY, to the extent permitted by law. Type \"show copying\"\n\
1127 and \"show warranty\" for details.\n");
1129 /* After the required info we print the configuration information. */
1131 fprintf_filtered (stream
, "This GDB was configured as \"");
1132 if (strcmp (host_name
, target_name
) != 0)
1134 fprintf_filtered (stream
, "--host=%s --target=%s",
1135 host_name
, target_name
);
1139 fprintf_filtered (stream
, "%s", host_name
);
1141 fprintf_filtered (stream
, "\".\n\
1142 Type \"show configuration\" for configuration details.");
1144 if (REPORT_BUGS_TO
[0])
1146 fprintf_filtered (stream
,
1147 _("\nFor bug reporting instructions, please see:\n"));
1148 fprintf_filtered (stream
, "%s.", REPORT_BUGS_TO
);
1152 /* Print the details of GDB build-time configuration. */
1154 print_gdb_configuration (struct ui_file
*stream
)
1156 fprintf_filtered (stream
, _("\
1157 This GDB was configured as follows:\n\
1158 configure --host=%s --target=%s\n\
1159 "), host_name
, target_name
);
1160 fprintf_filtered (stream
, _("\
1161 --with-auto-load-dir=%s\n\
1162 --with-auto-load-safe-path=%s\n\
1163 "), AUTO_LOAD_DIR
, AUTO_LOAD_SAFE_PATH
);
1165 fprintf_filtered (stream
, _("\
1169 fprintf_filtered (stream
, _("\
1174 fprintf_filtered (stream
, _("\
1175 --with-gdb-datadir=%s%s\n\
1176 "), GDB_DATADIR
, GDB_DATADIR_RELOCATABLE
? " (relocatable)" : "");
1178 fprintf_filtered (stream
, _("\
1179 --with-iconv-bin=%s%s\n\
1180 "), ICONV_BIN
, ICONV_BIN_RELOCATABLE
? " (relocatable)" : "");
1182 if (JIT_READER_DIR
[0])
1183 fprintf_filtered (stream
, _("\
1184 --with-jit-reader-dir=%s%s\n\
1185 "), JIT_READER_DIR
, JIT_READER_DIR_RELOCATABLE
? " (relocatable)" : "");
1186 #if HAVE_LIBUNWIND_IA64_H
1187 fprintf_filtered (stream
, _("\
1188 --with-libunwind-ia64\n\
1191 fprintf_filtered (stream
, _("\
1192 --without-libunwind-ia64\n\
1196 fprintf_filtered (stream
, _("\
1200 fprintf_filtered (stream
, _("\
1204 #ifdef WITH_PYTHON_PATH
1205 fprintf_filtered (stream
, _("\
1206 --with-python=%s%s\n\
1207 "), WITH_PYTHON_PATH
, PYTHON_PATH_RELOCATABLE
? " (relocatable)" : "");
1210 fprintf_filtered (stream
, _("\
1211 --with-relocated-sources=%s\n\
1215 fprintf_filtered (stream
, _("\
1216 --with-separate-debug-dir=%s%s\n\
1217 "), DEBUGDIR
, DEBUGDIR_RELOCATABLE
? " (relocatable)" : "");
1218 if (TARGET_SYSTEM_ROOT
[0])
1219 fprintf_filtered (stream
, _("\
1220 --with-sysroot=%s%s\n\
1221 "), TARGET_SYSTEM_ROOT
, TARGET_SYSTEM_ROOT_RELOCATABLE
? " (relocatable)" : "");
1222 if (SYSTEM_GDBINIT
[0])
1223 fprintf_filtered (stream
, _("\
1224 --with-system-gdbinit=%s%s\n\
1225 "), SYSTEM_GDBINIT
, SYSTEM_GDBINIT_RELOCATABLE
? " (relocatable)" : "");
1227 fprintf_filtered (stream
, _("\
1231 fprintf_filtered (stream
, _("\
1235 #if HAVE_LIBBABELTRACE
1236 fprintf_filtered (stream
, _("\
1237 --with-babeltrace\n\
1240 fprintf_filtered (stream
, _("\
1241 --without-babeltrace\n\
1247 /* The current top level prompt, settable with "set prompt", and/or
1248 with the python `gdb.prompt_hook' hook. */
1249 static char *top_prompt
;
1251 /* Access method for the GDB prompt string. */
1259 /* Set method for the GDB prompt string. */
1262 set_prompt (const char *s
)
1264 char *p
= xstrdup (s
);
1277 /* Callback for iterate_over_inferiors. Kills or detaches the given
1278 inferior, depending on how we originally gained control of it. */
1281 kill_or_detach (struct inferior
*inf
, void *args
)
1283 struct qt_args
*qt
= args
;
1284 struct thread_info
*thread
;
1289 thread
= any_thread_of_process (inf
->pid
);
1292 switch_to_thread (thread
->ptid
);
1294 /* Leave core files alone. */
1295 if (target_has_execution
)
1297 if (inf
->attach_flag
)
1298 target_detach (qt
->args
, qt
->from_tty
);
1307 /* Callback for iterate_over_inferiors. Prints info about what GDB
1308 will do to each inferior on a "quit". ARG points to a struct
1309 ui_out where output is to be collected. */
1312 print_inferior_quit_action (struct inferior
*inf
, void *arg
)
1314 struct ui_file
*stb
= arg
;
1319 if (inf
->attach_flag
)
1320 fprintf_filtered (stb
,
1321 _("\tInferior %d [%s] will be detached.\n"), inf
->num
,
1322 target_pid_to_str (pid_to_ptid (inf
->pid
)));
1324 fprintf_filtered (stb
,
1325 _("\tInferior %d [%s] will be killed.\n"), inf
->num
,
1326 target_pid_to_str (pid_to_ptid (inf
->pid
)));
1331 /* If necessary, make the user confirm that we should quit. Return
1332 non-zero if we should quit, zero if we shouldn't. */
1337 struct ui_file
*stb
;
1338 struct cleanup
*old_chain
;
1342 /* Don't even ask if we're only debugging a core file inferior. */
1343 if (!have_live_inferiors ())
1346 /* Build the query string as a single string. */
1347 stb
= mem_fileopen ();
1348 old_chain
= make_cleanup_ui_file_delete (stb
);
1350 /* This is something of a hack. But there's no reliable way to see
1351 if a GUI is running. The `use_windows' variable doesn't cut
1353 if (deprecated_init_ui_hook
)
1354 fprintf_filtered (stb
, _("A debugging session is active.\n"
1355 "Do you still want to close the debugger?"));
1358 fprintf_filtered (stb
, _("A debugging session is active.\n\n"));
1359 iterate_over_inferiors (print_inferior_quit_action
, stb
);
1360 fprintf_filtered (stb
, _("\nQuit anyway? "));
1363 str
= ui_file_xstrdup (stb
, NULL
);
1364 make_cleanup (xfree
, str
);
1366 qr
= query ("%s", str
);
1367 do_cleanups (old_chain
);
1371 /* Quit without asking for confirmation. */
1374 quit_force (char *args
, int from_tty
)
1378 volatile struct gdb_exception ex
;
1380 /* An optional expression may be used to cause gdb to terminate with the
1381 value of that expression. */
1384 struct value
*val
= parse_and_eval (args
);
1386 exit_code
= (int) value_as_long (val
);
1388 else if (return_child_result
)
1389 exit_code
= return_child_result_value
;
1392 qt
.from_tty
= from_tty
;
1394 /* Wrappers to make the code below a bit more readable. */
1396 TRY_CATCH (ex, RETURN_MASK_ALL)
1398 #define DO_PRINT_EX \
1399 if (ex.reason < 0) \
1400 exception_print (gdb_stderr, ex)
1402 /* We want to handle any quit errors and exit regardless. */
1404 /* Get out of tfind mode, and kill or detach all inferiors. */
1407 disconnect_tracing ();
1408 iterate_over_inferiors (kill_or_detach
, &qt
);
1412 /* Give all pushed targets a chance to do minimal cleanup, and pop
1420 /* Save the history information if it is appropriate to do so. */
1423 if (write_history_p
&& history_filename
)
1424 write_history (history_filename
);
1428 /* Do any final cleanups before exiting. */
1431 do_final_cleanups (all_cleanups ());
1438 /* Returns whether GDB is running on a terminal and input is
1439 currently coming from that terminal. */
1442 input_from_terminal_p (void)
1447 if (gdb_has_a_terminal () && instream
== stdin
)
1450 /* If INSTREAM is unset, and we are not in a user command, we
1451 must be in Insight. That's like having a terminal, for our
1453 if (instream
== NULL
&& !in_user_command
)
1460 dont_repeat_command (char *ignored
, int from_tty
)
1462 /* Can't call dont_repeat here because we're not necessarily reading
1464 *saved_command_line
= 0;
1467 /* Functions to manipulate command line editing control variables. */
1469 /* Number of commands to print in each call to show_commands. */
1470 #define Hist_print 10
1472 show_commands (char *args
, int from_tty
)
1474 /* Index for history commands. Relative to history_base. */
1477 /* Number of the history entry which we are planning to display next.
1478 Relative to history_base. */
1481 /* Print out some of the commands from the command history. */
1485 if (args
[0] == '+' && args
[1] == '\0')
1486 /* "info editing +" should print from the stored position. */
1489 /* "info editing <exp>" should print around command number <exp>. */
1490 num
= (parse_and_eval_long (args
) - history_base
) - Hist_print
/ 2;
1492 /* "show commands" means print the last Hist_print commands. */
1495 num
= history_length
- Hist_print
;
1501 /* If there are at least Hist_print commands, we want to display the last
1502 Hist_print rather than, say, the last 6. */
1503 if (history_length
- num
< Hist_print
)
1505 num
= history_length
- Hist_print
;
1511 offset
< num
+ Hist_print
&& offset
< history_length
;
1514 printf_filtered ("%5d %s\n", history_base
+ offset
,
1515 (history_get (history_base
+ offset
))->line
);
1518 /* The next command we want to display is the next one that we haven't
1522 /* If the user repeats this command with return, it should do what
1523 "show commands +" does. This is unnecessary if arg is null,
1524 because "show commands +" is not useful after "show commands". */
1525 if (from_tty
&& args
)
1532 /* Called by do_setshow_command. */
1534 set_history_size_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
1536 /* Readline's history interface works with 'int', so it can only
1537 handle history sizes up to INT_MAX. The command itself is
1538 uinteger, so UINT_MAX means "unlimited", but we only get that if
1539 the user does "set history size 0" -- "set history size <UINT_MAX>"
1540 throws out-of-range. */
1541 if (history_size_setshow_var
> INT_MAX
1542 && history_size_setshow_var
!= UINT_MAX
)
1544 unsigned int new_value
= history_size_setshow_var
;
1546 /* Restore previous value before throwing. */
1547 if (history_is_stifled ())
1548 history_size_setshow_var
= history_max_entries
;
1550 history_size_setshow_var
= UINT_MAX
;
1552 error (_("integer %u out of range"), new_value
);
1555 /* Commit the new value to readline's history. */
1556 if (history_size_setshow_var
== UINT_MAX
)
1557 unstifle_history ();
1559 stifle_history (history_size_setshow_var
);
1563 set_history (char *args
, int from_tty
)
1565 printf_unfiltered (_("\"set history\" must be followed "
1566 "by the name of a history subcommand.\n"));
1567 help_list (sethistlist
, "set history ", -1, gdb_stdout
);
1571 show_history (char *args
, int from_tty
)
1573 cmd_show_list (showhistlist
, from_tty
, "");
1576 int info_verbose
= 0; /* Default verbose msgs off. */
1578 /* Called by do_setshow_command. An elaborate joke. */
1580 set_verbose (char *args
, int from_tty
, struct cmd_list_element
*c
)
1582 const char *cmdname
= "verbose";
1583 struct cmd_list_element
*showcmd
;
1585 showcmd
= lookup_cmd_1 (&cmdname
, showlist
, NULL
, 1);
1586 gdb_assert (showcmd
!= NULL
&& showcmd
!= CMD_LIST_AMBIGUOUS
);
1590 c
->doc
= "Set verbose printing of informational messages.";
1591 showcmd
->doc
= "Show verbose printing of informational messages.";
1595 c
->doc
= "Set verbosity.";
1596 showcmd
->doc
= "Show verbosity.";
1600 /* Init the history buffer. Note that we are called after the init file(s)
1601 have been read so that the user can change the history file via his
1602 .gdbinit file (for instance). The GDBHISTFILE environment variable
1603 overrides all of this. */
1610 tmpenv
= getenv ("HISTSIZE");
1615 var
= atoi (tmpenv
);
1618 /* Prefer ending up with no history rather than overflowing
1619 readline's history interface, which uses signed 'int'
1624 history_size_setshow_var
= var
;
1626 /* If the init file hasn't set a size yet, pick the default. */
1627 else if (history_size_setshow_var
== 0)
1628 history_size_setshow_var
= 256;
1630 /* Note that unlike "set history size 0", "HISTSIZE=0" really sets
1631 the history size to 0... */
1632 stifle_history (history_size_setshow_var
);
1634 tmpenv
= getenv ("GDBHISTFILE");
1636 history_filename
= xstrdup (tmpenv
);
1637 else if (!history_filename
)
1639 /* We include the current directory so that if the user changes
1640 directories the file written will be the same as the one
1643 /* No leading dots in file names are allowed on MSDOS. */
1644 history_filename
= concat (current_directory
, "/_gdb_history",
1647 history_filename
= concat (current_directory
, "/.gdb_history",
1651 read_history (history_filename
);
1655 show_prompt (struct ui_file
*file
, int from_tty
,
1656 struct cmd_list_element
*c
, const char *value
)
1658 fprintf_filtered (file
, _("Gdb's prompt is \"%s\".\n"), value
);
1662 show_async_command_editing_p (struct ui_file
*file
, int from_tty
,
1663 struct cmd_list_element
*c
, const char *value
)
1665 fprintf_filtered (file
, _("Editing of command lines as "
1666 "they are typed is %s.\n"),
1671 show_annotation_level (struct ui_file
*file
, int from_tty
,
1672 struct cmd_list_element
*c
, const char *value
)
1674 fprintf_filtered (file
, _("Annotation_level is %s.\n"), value
);
1678 show_exec_done_display_p (struct ui_file
*file
, int from_tty
,
1679 struct cmd_list_element
*c
, const char *value
)
1681 fprintf_filtered (file
, _("Notification of completion for "
1682 "asynchronous execution commands is %s.\n"),
1686 /* "set" command for the gdb_datadir configuration variable. */
1689 set_gdb_datadir (char *args
, int from_tty
, struct cmd_list_element
*c
)
1691 observer_notify_gdb_datadir_changed ();
1697 /* Initialize the prompt to a simple "(gdb) " prompt or to whatever
1698 the DEFAULT_PROMPT is. */
1699 set_prompt (DEFAULT_PROMPT
);
1701 /* Set things up for annotation_level > 1, if the user ever decides
1703 async_annotation_suffix
= "prompt";
1705 /* Set the important stuff up for command editing. */
1706 command_editing_p
= 1;
1707 history_expansion_p
= 0;
1708 write_history_p
= 0;
1710 /* Setup important stuff for command line editing. */
1711 rl_completion_word_break_hook
= gdb_completion_word_break_characters
;
1712 rl_completion_entry_function
= readline_line_completion_function
;
1713 rl_completer_word_break_characters
= default_word_break_characters ();
1714 rl_completer_quote_characters
= get_gdb_completer_quote_characters ();
1715 rl_readline_name
= "gdb";
1716 rl_terminal_name
= getenv ("TERM");
1718 /* The name for this defun comes from Bash, where it originated.
1719 15 is Control-o, the same binding this function has in Bash. */
1720 rl_add_defun ("operate-and-get-next", gdb_rl_operate_and_get_next
, 15);
1722 add_setshow_string_cmd ("prompt", class_support
,
1724 _("Set gdb's prompt"),
1725 _("Show gdb's prompt"),
1728 &setlist
, &showlist
);
1730 add_com ("dont-repeat", class_support
, dont_repeat_command
, _("\
1731 Don't repeat this command.\nPrimarily \
1732 used inside of user-defined commands that should not be repeated when\n\
1735 add_setshow_boolean_cmd ("editing", class_support
,
1736 &async_command_editing_p
, _("\
1737 Set editing of command lines as they are typed."), _("\
1738 Show editing of command lines as they are typed."), _("\
1739 Use \"on\" to enable the editing, and \"off\" to disable it.\n\
1740 Without an argument, command line editing is enabled. To edit, use\n\
1741 EMACS-like or VI-like commands like control-P or ESC."),
1742 set_async_editing_command
,
1743 show_async_command_editing_p
,
1744 &setlist
, &showlist
);
1746 add_setshow_boolean_cmd ("save", no_class
, &write_history_p
, _("\
1747 Set saving of the history record on exit."), _("\
1748 Show saving of the history record on exit."), _("\
1749 Use \"on\" to enable the saving, and \"off\" to disable it.\n\
1750 Without an argument, saving is enabled."),
1752 show_write_history_p
,
1753 &sethistlist
, &showhistlist
);
1755 add_setshow_uinteger_cmd ("size", no_class
, &history_size_setshow_var
, _("\
1756 Set the size of the command history,"), _("\
1757 Show the size of the command history,"), _("\
1758 ie. the number of previous commands to keep a record of.\n\
1759 If set to \"unlimited\", the number of commands kept in the history\n\
1760 list is unlimited. This defaults to the value of the environment\n\
1761 variable \"HISTSIZE\", or to 256 if this variable is not set."),
1762 set_history_size_command
,
1764 &sethistlist
, &showhistlist
);
1766 add_setshow_filename_cmd ("filename", no_class
, &history_filename
, _("\
1767 Set the filename in which to record the command history"), _("\
1768 Show the filename in which to record the command history"), _("\
1769 (the list of previous commands of which a record is kept)."),
1771 show_history_filename
,
1772 &sethistlist
, &showhistlist
);
1774 add_setshow_boolean_cmd ("confirm", class_support
, &confirm
, _("\
1775 Set whether to confirm potentially dangerous operations."), _("\
1776 Show whether to confirm potentially dangerous operations."), NULL
,
1779 &setlist
, &showlist
);
1781 add_setshow_zinteger_cmd ("annotate", class_obscure
, &annotation_level
, _("\
1782 Set annotation_level."), _("\
1783 Show annotation_level."), _("\
1784 0 == normal; 1 == fullname (for use when running under emacs)\n\
1785 2 == output annotated suitably for use by programs that control GDB."),
1787 show_annotation_level
,
1788 &setlist
, &showlist
);
1790 add_setshow_boolean_cmd ("exec-done-display", class_support
,
1791 &exec_done_display_p
, _("\
1792 Set notification of completion for asynchronous execution commands."), _("\
1793 Show notification of completion for asynchronous execution commands."), _("\
1794 Use \"on\" to enable the notification, and \"off\" to disable it."),
1796 show_exec_done_display_p
,
1797 &setlist
, &showlist
);
1799 add_setshow_filename_cmd ("data-directory", class_maintenance
,
1800 &gdb_datadir
, _("Set GDB's data directory."),
1801 _("Show GDB's data directory."),
1803 When set, GDB uses the specified path to search for data files."),
1804 set_gdb_datadir
, NULL
,
1810 gdb_init (char *argv0
)
1812 if (pre_init_ui_hook
)
1813 pre_init_ui_hook ();
1815 /* Run the init function of each source file. */
1818 /* Make sure we return to the original directory upon exit, come
1819 what may, since the OS doesn't do that for us. */
1820 make_final_cleanup (do_chdir_cleanup
, xstrdup (current_directory
));
1823 init_cmd_lists (); /* This needs to be done first. */
1824 initialize_targets (); /* Setup target_terminal macros for utils.c. */
1825 initialize_utils (); /* Make errors and warnings possible. */
1827 /* Here is where we call all the _initialize_foo routines. */
1828 initialize_all_files ();
1830 /* This creates the current_program_space. Do this after all the
1831 _initialize_foo routines have had a chance to install their
1832 per-sspace data keys. Also do this before
1833 initialize_current_architecture is called, because it accesses
1834 exec_bfd of the current program space. */
1835 initialize_progspace ();
1836 initialize_inferiors ();
1837 initialize_current_architecture ();
1839 initialize_event_loop ();
1840 init_main (); /* But that omits this file! Do it now. */
1842 initialize_stdin_serial ();
1844 async_init_signals ();
1846 /* We need a default language for parsing expressions, so simple
1847 things like "set width 0" won't fail if no language is explicitly
1848 set in a config file or implicitly set by reading an executable
1850 set_language (language_c
);
1851 expected_language
= current_language
; /* Don't warn about the change. */
1853 /* Allow another UI to initialize. If the UI fails to initialize,
1854 and it wants GDB to revert to the CLI, it should clear
1855 deprecated_init_ui_hook. */
1856 if (deprecated_init_ui_hook
)
1857 deprecated_init_ui_hook (argv0
);
1860 /* Python initialization can require various commands to be
1861 installed. For example "info pretty-printer" needs the "info"
1862 prefix to be installed. Keep things simple and just do final
1863 python initialization here. */
1864 finish_python_initialization ();