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"
54 #include "gdb_select.h"
56 /* readline include files. */
57 #include "readline/readline.h"
58 #include "readline/history.h"
60 /* readline defines this. */
63 #include <sys/types.h>
65 #include "event-top.h"
70 #include "tracepoint.h"
77 extern void initialize_all_files (void);
79 #define PROMPT(X) the_prompts.prompt_stack[the_prompts.top + X].prompt
80 #define PREFIX(X) the_prompts.prompt_stack[the_prompts.top + X].prefix
81 #define SUFFIX(X) the_prompts.prompt_stack[the_prompts.top + X].suffix
83 /* Default command line prompt. This is overriden in some configs. */
85 #ifndef DEFAULT_PROMPT
86 #define DEFAULT_PROMPT "(gdb) "
89 /* Generate a function that exports a pointer to a field of the
92 #define gen_ret_current_ui_field_ptr(type, name) \
94 current_ui_## name ## _ptr (void) \
96 return ¤t_ui->m_ ## name; \
99 gen_ret_current_ui_field_ptr (struct ui_file
*, gdb_stdout
)
100 gen_ret_current_ui_field_ptr (struct ui_file
*, gdb_stdin
)
101 gen_ret_current_ui_field_ptr (struct ui_file
*, gdb_stderr
)
102 gen_ret_current_ui_field_ptr (struct ui_file
*, gdb_stdlog
)
103 gen_ret_current_ui_field_ptr (struct ui_out
*, current_uiout
)
105 /* Initialization file name for gdb. This is host-dependent. */
107 const char gdbinit
[] = GDBINIT
;
109 int inhibit_gdbinit
= 0;
111 extern char lang_frame_mismatch_warn
[]; /* language.c */
113 /* Flag for whether we want to confirm potentially dangerous
114 operations. Default is yes. */
119 show_confirm (struct ui_file
*file
, int from_tty
,
120 struct cmd_list_element
*c
, const char *value
)
122 fprintf_filtered (file
, _("Whether to confirm potentially "
123 "dangerous operations is %s.\n"),
127 /* Flag to indicate whether a user defined command is currently running. */
131 /* Current working directory. */
133 char *current_directory
;
135 /* The directory name is actually stored here (usually). */
136 char gdb_dirbuf
[1024];
138 /* The last command line executed on the console. Used for command
140 char *saved_command_line
;
142 /* Nonzero if the current command is modified by "server ". This
143 affects things like recording into the command history, commands
144 repeating on RETURN, etc. This is so a user interface (emacs, GUI,
145 whatever) can issue its own commands and also send along commands
146 from the user, and have the user not notice that the user interface
147 is issuing commands too. */
150 /* Timeout limit for response from target. */
152 /* The default value has been changed many times over the years. It
153 was originally 5 seconds. But that was thought to be a long time
154 to sit and wait, so it was changed to 2 seconds. That was thought
155 to be plenty unless the connection was going through some terminal
156 server or multiplexer or other form of hairy serial connection.
158 In mid-1996, remote_timeout was moved from remote.c to top.c and
159 it began being used in other remote-* targets. It appears that the
160 default was changed to 20 seconds at that time, perhaps because the
161 Renesas E7000 ICE didn't always respond in a timely manner.
163 But if 5 seconds is a long time to sit and wait for retransmissions,
164 20 seconds is far worse. This demonstrates the difficulty of using
165 a single variable for all protocol timeouts.
167 As remote.c is used much more than remote-e7000.c, it was changed
168 back to 2 seconds in 1999. */
170 int remote_timeout
= 2;
172 /* Non-zero tells remote* modules to output debugging info. */
174 int remote_debug
= 0;
176 /* Sbrk location on entry to main. Used for statistics only. */
181 /* Hooks for alternate command interfaces. */
183 /* This hook is called from within gdb's many mini-event loops which
184 could steal control from a real user interface's event loop. It
185 returns non-zero if the user is requesting a detach, zero
188 int (*deprecated_ui_loop_hook
) (int);
191 /* Called from print_frame_info to list the line we stopped in. */
193 void (*deprecated_print_frame_info_listing_hook
) (struct symtab
* s
,
197 /* Replaces most of query. */
199 int (*deprecated_query_hook
) (const char *, va_list);
201 /* Replaces most of warning. */
203 void (*deprecated_warning_hook
) (const char *, va_list);
205 /* These three functions support getting lines of text from the user.
206 They are used in sequence. First deprecated_readline_begin_hook is
207 called with a text string that might be (for example) a message for
208 the user to type in a sequence of commands to be executed at a
209 breakpoint. If this function calls back to a GUI, it might take
210 this opportunity to pop up a text interaction window with this
211 message. Next, deprecated_readline_hook is called with a prompt
212 that is emitted prior to collecting the user input. It can be
213 called multiple times. Finally, deprecated_readline_end_hook is
214 called to notify the GUI that we are done with the interaction
215 window and it can close it. */
217 void (*deprecated_readline_begin_hook
) (char *, ...);
218 char *(*deprecated_readline_hook
) (const char *);
219 void (*deprecated_readline_end_hook
) (void);
221 /* Called as appropriate to notify the interface that we have attached
222 to or detached from an already running process. */
224 void (*deprecated_attach_hook
) (void);
225 void (*deprecated_detach_hook
) (void);
227 /* Called during long calculations to allow GUI to repair window
228 damage, and to check for stop buttons, etc... */
230 void (*deprecated_interactive_hook
) (void);
232 /* Called when going to wait for the target. Usually allows the GUI
233 to run while waiting for target events. */
235 ptid_t (*deprecated_target_wait_hook
) (ptid_t ptid
,
236 struct target_waitstatus
*status
,
239 /* Used by UI as a wrapper around command execution. May do various
240 things like enabling/disabling buttons, etc... */
242 void (*deprecated_call_command_hook
) (struct cmd_list_element
* c
,
243 char *cmd
, int from_tty
);
245 /* Called when the current thread changes. Argument is thread id. */
247 void (*deprecated_context_hook
) (int id
);
249 /* The highest UI number ever assigned. */
250 static int highest_ui_num
;
255 new_ui (FILE *instream
, FILE *outstream
, FILE *errstream
)
259 ui
= XCNEW (struct ui
);
261 ui
->num
= ++highest_ui_num
;
262 ui
->instream
= instream
;
263 ui
->outstream
= outstream
;
264 ui
->errstream
= errstream
;
266 ui
->input_fd
= fileno (ui
->instream
);
268 ui
->m_gdb_stdin
= stdio_fileopen (ui
->instream
);
269 ui
->m_gdb_stdout
= stdio_fileopen (ui
->outstream
);
270 ui
->m_gdb_stderr
= stderr_fileopen (ui
->errstream
);
271 ui
->m_gdb_stdlog
= ui
->m_gdb_stderr
;
273 ui
->prompt_state
= PROMPT_NEEDED
;
281 for (last
= ui_list
; last
->next
!= NULL
; last
= last
->next
)
289 /* Handler for SIGHUP. */
292 /* NOTE 1999-04-29: This function 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. */
298 /* Stop asking user for confirmation --- we're exiting. This
299 prevents asking the user dumb questions. */
301 quit_command ((char *) 0, 0);
303 #endif /* defined SIGHUP */
305 /* Line number we are currently in, in a file which is being sourced. */
306 /* NOTE 1999-04-29: This variable will be static again, once we modify
307 gdb to use the event loop as the default command loop and we merge
308 event-top.c into this file, top.c. */
309 /* static */ int source_line_number
;
311 /* Name of the file we are sourcing. */
312 /* NOTE 1999-04-29: This variable will be static again, once we modify
313 gdb to use the event loop as the default command loop and we merge
314 event-top.c into this file, top.c. */
315 /* static */ const char *source_file_name
;
317 /* Clean up on error during a "source" command (or execution of a
318 user-defined command). */
321 do_restore_instream_cleanup (void *stream
)
323 struct ui
*ui
= current_ui
;
325 /* Restore the previous input stream. */
326 ui
->instream
= (FILE *) stream
;
329 /* Read commands from STREAM. */
331 read_command_file (FILE *stream
)
333 struct ui
*ui
= current_ui
;
334 struct cleanup
*cleanups
;
336 cleanups
= make_cleanup (do_restore_instream_cleanup
, ui
->instream
);
337 ui
->instream
= stream
;
339 /* Read commands from `instream' and execute them until end of file
340 or error reading instream. */
342 while (ui
->instream
!= NULL
&& !feof (ui
->instream
))
346 /* Get a command-line. This calls the readline package. */
347 command
= command_line_input (NULL
, 0, NULL
);
350 command_handler (command
);
353 do_cleanups (cleanups
);
356 void (*pre_init_ui_hook
) (void);
360 do_chdir_cleanup (void *old_dir
)
368 prepare_execute_command (void)
371 struct cleanup
*cleanup
;
373 mark
= value_mark ();
374 cleanup
= make_cleanup_value_free_to_mark (mark
);
376 /* With multiple threads running while the one we're examining is
377 stopped, the dcache can get stale without us being able to detect
378 it. For the duration of the command, though, use the dcache to
379 help things like backtrace. */
381 target_dcache_invalidate ();
386 /* Tell the user if the language has changed (except first time) after
387 executing a command. */
390 check_frame_language_change (void)
392 static int warned
= 0;
393 struct frame_info
*frame
;
395 /* First make sure that a new frame has been selected, in case the
396 command or the hooks changed the program state. */
397 frame
= deprecated_safe_get_selected_frame ();
398 if (current_language
!= expected_language
)
400 if (language_mode
== language_mode_auto
&& info_verbose
)
402 language_info (1); /* Print what changed. */
407 /* Warn the user if the working language does not match the language
408 of the current frame. Only warn the user if we are actually
409 running the program, i.e. there is a stack. */
410 /* FIXME: This should be cacheing the frame and only running when
411 the frame changes. */
413 if (has_stack_frames ())
417 flang
= get_frame_language (frame
);
419 && flang
!= language_unknown
420 && flang
!= current_language
->la_language
)
422 printf_filtered ("%s\n", lang_frame_mismatch_warn
);
431 wait_sync_command_done (void)
433 while (gdb_do_one_event () >= 0)
434 if (current_ui
->prompt_state
!= PROMPT_BLOCKED
)
441 maybe_wait_sync_command_done (int was_sync
)
443 /* If the interpreter is in sync mode (we're running a user
444 command's list, running command hooks or similars), and we
445 just ran a synchronous command that started the target, wait
446 for that command to end. */
447 if (!current_ui
->async
449 && current_ui
->prompt_state
== PROMPT_BLOCKED
)
450 wait_sync_command_done ();
453 /* Execute the line P as a command, in the current user context.
454 Pass FROM_TTY as second argument to the defining function. */
457 execute_command (char *p
, int from_tty
)
459 struct cleanup
*cleanup_if_error
, *cleanup
;
460 struct cmd_list_element
*c
;
463 cleanup_if_error
= make_bpstat_clear_actions_cleanup ();
464 cleanup
= prepare_execute_command ();
466 /* Force cleanup of any alloca areas if using C alloca instead of
470 /* This can happen when command_line_input hits end of file. */
473 do_cleanups (cleanup
);
474 discard_cleanups (cleanup_if_error
);
478 target_log_command (p
);
480 while (*p
== ' ' || *p
== '\t')
486 int was_sync
= current_ui
->prompt_state
== PROMPT_BLOCKED
;
490 /* If trace-commands is set then this will print this command. */
491 print_command_trace (p
);
493 c
= lookup_cmd (&cmd
, cmdlist
, "", 0, 1);
496 /* Pass null arg rather than an empty one. */
499 /* FIXME: cagney/2002-02-02: The c->type test is pretty dodgy
500 while the is_complete_command(cfunc) test is just plain
501 bogus. They should both be replaced by a test of the form
502 c->strip_trailing_white_space_p. */
503 /* NOTE: cagney/2002-02-02: The function.cfunc in the below
504 can't be replaced with func. This is because it is the
505 cfunc, and not the func, that has the value that the
506 is_complete_command hack is testing for. */
507 /* Clear off trailing whitespace, except for set and complete
510 && c
->type
!= set_cmd
511 && !is_complete_command (c
))
513 p
= arg
+ strlen (arg
) - 1;
514 while (p
>= arg
&& (*p
== ' ' || *p
== '\t'))
519 /* If this command has been pre-hooked, run the hook first. */
520 execute_cmd_pre_hook (c
);
522 if (c
->deprecated_warn_user
)
523 deprecated_cmd_warning (line
);
525 /* c->user_commands would be NULL in the case of a python command. */
526 if (c
->theclass
== class_user
&& c
->user_commands
)
527 execute_user_command (c
, arg
);
528 else if (c
->type
== set_cmd
)
529 do_set_command (arg
, from_tty
, c
);
530 else if (c
->type
== show_cmd
)
531 do_show_command (arg
, from_tty
, c
);
532 else if (!cmd_func_p (c
))
533 error (_("That is not a command, just a help topic."));
534 else if (deprecated_call_command_hook
)
535 deprecated_call_command_hook (c
, arg
, from_tty
);
537 cmd_func (c
, arg
, from_tty
);
539 maybe_wait_sync_command_done (was_sync
);
541 /* If this command has been post-hooked, run the hook last. */
542 execute_cmd_post_hook (c
);
546 check_frame_language_change ();
548 do_cleanups (cleanup
);
549 discard_cleanups (cleanup_if_error
);
552 /* Run execute_command for P and FROM_TTY. Capture its output into the
553 returned string, do not display it to the screen. BATCH_FLAG will be
554 temporarily set to true. */
557 execute_command_to_string (char *p
, int from_tty
)
559 struct ui_file
*str_file
;
560 struct cleanup
*cleanup
;
563 /* GDB_STDOUT should be better already restored during these
564 restoration callbacks. */
565 cleanup
= set_batch_flag_and_make_cleanup_restore_page_info ();
567 make_cleanup_restore_integer (¤t_ui
->async
);
568 current_ui
->async
= 0;
570 str_file
= mem_fileopen ();
572 make_cleanup_ui_file_delete (str_file
);
573 make_cleanup_restore_ui_file (&gdb_stdout
);
574 make_cleanup_restore_ui_file (&gdb_stderr
);
575 make_cleanup_restore_ui_file (&gdb_stdlog
);
576 make_cleanup_restore_ui_file (&gdb_stdtarg
);
577 make_cleanup_restore_ui_file (&gdb_stdtargerr
);
579 if (ui_out_redirect (current_uiout
, str_file
) < 0)
580 warning (_("Current output protocol does not support redirection"));
582 make_cleanup_ui_out_redirect_pop (current_uiout
);
584 gdb_stdout
= str_file
;
585 gdb_stderr
= str_file
;
586 gdb_stdlog
= str_file
;
587 gdb_stdtarg
= str_file
;
588 gdb_stdtargerr
= str_file
;
590 execute_command (p
, from_tty
);
592 retval
= ui_file_xstrdup (str_file
, NULL
);
594 do_cleanups (cleanup
);
600 /* When nonzero, cause dont_repeat to do nothing. This should only be
601 set via prevent_dont_repeat. */
603 static int suppress_dont_repeat
= 0;
605 /* Commands call this if they do not want to be repeated by null lines. */
610 struct ui
*ui
= current_ui
;
612 if (suppress_dont_repeat
|| server_command
)
615 /* If we aren't reading from standard input, we are saving the last
616 thing read from stdin in line and don't want to delete it. Null
617 lines won't repeat here in any case. */
618 if (ui
->instream
== stdin
)
619 *saved_command_line
= 0;
622 /* Prevent dont_repeat from working, and return a cleanup that
623 restores the previous state. */
626 prevent_dont_repeat (void)
628 struct cleanup
*result
= make_cleanup_restore_integer (&suppress_dont_repeat
);
630 suppress_dont_repeat
= 1;
635 /* Read a line from the stream "instream" without command line editing.
637 It prints PROMPT once at the start.
638 Action is compatible with "readline", e.g. space for the result is
639 malloc'd and should be freed by the caller.
641 A NULL return means end of file. */
644 gdb_readline_no_editing (const char *prompt
)
646 struct buffer line_buffer
;
647 struct ui
*ui
= current_ui
;
648 /* Read from stdin if we are executing a user defined command. This
649 is the right thing for prompt_for_continue, at least. */
650 FILE *stream
= ui
->instream
!= NULL
? ui
->instream
: stdin
;
651 int fd
= fileno (stream
);
653 buffer_init (&line_buffer
);
657 /* Don't use a _filtered function here. It causes the assumed
658 character position to be off, since the newline we read from
659 the user is not accounted for. */
660 fputs_unfiltered (prompt
, gdb_stdout
);
661 gdb_flush (gdb_stdout
);
672 /* Wait until at least one byte of data is available. Control-C
673 can interrupt interruptible_select, but not fgetc. */
675 FD_SET (fd
, &readfds
);
676 if (interruptible_select (fd
+ 1, &readfds
, NULL
, NULL
, NULL
) == -1)
680 /* If this was ctrl-c, the QUIT above handles it. */
683 perror_with_name (("select"));
690 if (line_buffer
.used_size
> 0)
691 /* The last line does not end with a newline. Return it, and
692 if we are called again fgetc will still return EOF and
693 we'll return NULL then. */
695 xfree (buffer_finish (&line_buffer
));
701 if (line_buffer
.used_size
> 0
702 && line_buffer
.buffer
[line_buffer
.used_size
- 1] == '\r')
703 line_buffer
.used_size
--;
707 buffer_grow_char (&line_buffer
, c
);
710 buffer_grow_char (&line_buffer
, '\0');
711 return buffer_finish (&line_buffer
);
714 /* Variables which control command line editing and history
715 substitution. These variables are given default values at the end
717 static int command_editing_p
;
719 /* NOTE 1999-04-29: This variable will be static again, once we modify
720 gdb to use the event loop as the default command loop and we merge
721 event-top.c into this file, top.c. */
723 /* static */ int history_expansion_p
;
725 static int write_history_p
;
727 show_write_history_p (struct ui_file
*file
, int from_tty
,
728 struct cmd_list_element
*c
, const char *value
)
730 fprintf_filtered (file
, _("Saving of the history record on exit is %s.\n"),
734 /* The variable associated with the "set/show history size"
735 command. The value -1 means unlimited, and -2 means undefined. */
736 static int history_size_setshow_var
= -2;
739 show_history_size (struct ui_file
*file
, int from_tty
,
740 struct cmd_list_element
*c
, const char *value
)
742 fprintf_filtered (file
, _("The size of the command history is %s.\n"),
746 /* Variable associated with the "history remove-duplicates" option.
747 The value -1 means unlimited. */
748 static int history_remove_duplicates
= 0;
751 show_history_remove_duplicates (struct ui_file
*file
, int from_tty
,
752 struct cmd_list_element
*c
, const char *value
)
754 fprintf_filtered (file
,
755 _("The number of history entries to look back at for "
756 "duplicates is %s.\n"),
760 static char *history_filename
;
762 show_history_filename (struct ui_file
*file
, int from_tty
,
763 struct cmd_list_element
*c
, const char *value
)
765 fprintf_filtered (file
, _("The filename in which to record "
766 "the command history is \"%s\".\n"),
770 /* This is like readline(), but it has some gdb-specific behavior.
771 gdb may want readline in both the synchronous and async modes during
772 a single gdb invocation. At the ordinary top-level prompt we might
773 be using the async readline. That means we can't use
774 rl_pre_input_hook, since it doesn't work properly in async mode.
775 However, for a secondary prompt (" >", such as occurs during a
776 `define'), gdb wants a synchronous response.
778 We used to call readline() directly, running it in synchronous
779 mode. But mixing modes this way is not supported, and as of
780 readline 5.x it no longer works; the arrow keys come unbound during
781 the synchronous call. So we make a nested call into the event
782 loop. That's what gdb_readline_wrapper is for. */
784 /* A flag set as soon as gdb_readline_wrapper_line is called; we can't
785 rely on gdb_readline_wrapper_result, which might still be NULL if
786 the user types Control-D for EOF. */
787 static int gdb_readline_wrapper_done
;
789 /* The result of the current call to gdb_readline_wrapper, once a newline
791 static char *gdb_readline_wrapper_result
;
793 /* Any intercepted hook. Operate-and-get-next sets this, expecting it
794 to be called after the newline is processed (which will redisplay
795 the prompt). But in gdb_readline_wrapper we will not get a new
796 prompt until the next call, or until we return to the event loop.
797 So we disable this hook around the newline and restore it before we
799 static void (*saved_after_char_processing_hook
) (void);
805 gdb_in_secondary_prompt_p (struct ui
*ui
)
807 return ui
->secondary_prompt_depth
> 0;
811 /* This function is called when readline has seen a complete line of
815 gdb_readline_wrapper_line (char *line
)
817 gdb_assert (!gdb_readline_wrapper_done
);
818 gdb_readline_wrapper_result
= line
;
819 gdb_readline_wrapper_done
= 1;
821 /* Prevent operate-and-get-next from acting too early. */
822 saved_after_char_processing_hook
= after_char_processing_hook
;
823 after_char_processing_hook
= NULL
;
825 /* Prevent parts of the prompt from being redisplayed if annotations
826 are enabled, and readline's state getting out of sync. We'll
827 reinstall the callback handler, which puts the terminal in raw
828 mode (or in readline lingo, in prepped state), when we're next
829 ready to process user input, either in display_gdb_prompt, or if
830 we're handling an asynchronous target event and running in the
831 background, just before returning to the event loop to process
832 further input (or more target events). */
833 if (current_ui
->command_editing
)
834 gdb_rl_callback_handler_remove ();
837 struct gdb_readline_wrapper_cleanup
839 void (*handler_orig
) (char *);
840 int already_prompted_orig
;
842 /* Whether the target was async. */
843 int target_is_async_orig
;
847 gdb_readline_wrapper_cleanup (void *arg
)
849 struct ui
*ui
= current_ui
;
850 struct gdb_readline_wrapper_cleanup
*cleanup
851 = (struct gdb_readline_wrapper_cleanup
*) arg
;
853 if (ui
->command_editing
)
854 rl_already_prompted
= cleanup
->already_prompted_orig
;
856 gdb_assert (ui
->input_handler
== gdb_readline_wrapper_line
);
857 ui
->input_handler
= cleanup
->handler_orig
;
859 /* Don't restore our input handler in readline yet. That would make
860 readline prep the terminal (putting it in raw mode), while the
861 line we just read may trigger execution of a command that expects
862 the terminal in the default cooked/canonical mode, such as e.g.,
863 running Python's interactive online help utility. See
864 gdb_readline_wrapper_line for when we'll reinstall it. */
866 gdb_readline_wrapper_result
= NULL
;
867 gdb_readline_wrapper_done
= 0;
868 ui
->secondary_prompt_depth
--;
869 gdb_assert (ui
->secondary_prompt_depth
>= 0);
871 after_char_processing_hook
= saved_after_char_processing_hook
;
872 saved_after_char_processing_hook
= NULL
;
874 if (cleanup
->target_is_async_orig
)
881 gdb_readline_wrapper (const char *prompt
)
883 struct ui
*ui
= current_ui
;
884 struct cleanup
*back_to
;
885 struct gdb_readline_wrapper_cleanup
*cleanup
;
888 cleanup
= XNEW (struct gdb_readline_wrapper_cleanup
);
889 cleanup
->handler_orig
= ui
->input_handler
;
890 ui
->input_handler
= gdb_readline_wrapper_line
;
892 if (ui
->command_editing
)
893 cleanup
->already_prompted_orig
= rl_already_prompted
;
895 cleanup
->already_prompted_orig
= 0;
897 cleanup
->target_is_async_orig
= target_is_async_p ();
899 ui
->secondary_prompt_depth
++;
900 back_to
= make_cleanup (gdb_readline_wrapper_cleanup
, cleanup
);
902 if (cleanup
->target_is_async_orig
)
905 /* Display our prompt and prevent double prompt display. */
906 display_gdb_prompt (prompt
);
907 if (ui
->command_editing
)
908 rl_already_prompted
= 1;
910 if (after_char_processing_hook
)
911 (*after_char_processing_hook
) ();
912 gdb_assert (after_char_processing_hook
== NULL
);
914 while (gdb_do_one_event () >= 0)
915 if (gdb_readline_wrapper_done
)
918 retval
= gdb_readline_wrapper_result
;
919 do_cleanups (back_to
);
924 /* The current saved history number from operate-and-get-next.
925 This is -1 if not valid. */
926 static int operate_saved_history
= -1;
928 /* This is put on the appropriate hook and helps operate-and-get-next
931 gdb_rl_operate_and_get_next_completion (void)
933 int delta
= where_history () - operate_saved_history
;
935 /* The `key' argument to rl_get_previous_history is ignored. */
936 rl_get_previous_history (delta
, 0);
937 operate_saved_history
= -1;
939 /* readline doesn't automatically update the display for us. */
942 after_char_processing_hook
= NULL
;
943 rl_pre_input_hook
= NULL
;
946 /* This is a gdb-local readline command handler. It accepts the
947 current command line (like RET does) and, if this command was taken
948 from the history, arranges for the next command in the history to
949 appear on the command line when the prompt returns.
950 We ignore the arguments. */
952 gdb_rl_operate_and_get_next (int count
, int key
)
956 /* Use the async hook. */
957 after_char_processing_hook
= gdb_rl_operate_and_get_next_completion
;
959 /* Find the current line, and find the next line to use. */
960 where
= where_history();
962 if ((history_is_stifled () && (history_length
>= history_max_entries
))
963 || (where
>= history_length
- 1))
964 operate_saved_history
= where
;
966 operate_saved_history
= where
+ 1;
968 return rl_newline (1, key
);
971 /* Number of user commands executed during this session. */
973 static int command_count
= 0;
975 /* Add the user command COMMAND to the input history list. */
978 gdb_add_history (const char *command
)
982 if (history_remove_duplicates
!= 0)
985 int lookbehind_threshold
;
987 /* The lookbehind threshold for finding a duplicate history entry is
988 bounded by command_count because we can't meaningfully delete
989 history entries that are already stored in the history file since
990 the history file is appended to. */
991 if (history_remove_duplicates
== -1
992 || history_remove_duplicates
> command_count
)
993 lookbehind_threshold
= command_count
;
995 lookbehind_threshold
= history_remove_duplicates
;
998 for (lookbehind
= 0; lookbehind
< lookbehind_threshold
; lookbehind
++)
1000 HIST_ENTRY
*temp
= previous_history ();
1005 if (strcmp (temp
->line
, command
) == 0)
1007 HIST_ENTRY
*prev
= remove_history (where_history ());
1009 free_history_entry (prev
);
1016 add_history (command
);
1019 /* Safely append new history entries to the history file in a corruption-free
1020 way using an intermediate local history file. */
1023 gdb_safe_append_history (void)
1025 int ret
, saved_errno
;
1026 char *local_history_filename
;
1027 struct cleanup
*old_chain
;
1029 local_history_filename
1030 = xstrprintf ("%s-gdb%d~", history_filename
, getpid ());
1031 old_chain
= make_cleanup (xfree
, local_history_filename
);
1033 ret
= rename (history_filename
, local_history_filename
);
1034 saved_errno
= errno
;
1035 if (ret
< 0 && saved_errno
!= ENOENT
)
1037 warning (_("Could not rename %s to %s: %s"),
1038 history_filename
, local_history_filename
,
1039 safe_strerror (saved_errno
));
1045 /* If the rename failed with ENOENT then either the global history
1046 file never existed in the first place or another GDB process is
1047 currently appending to it (and has thus temporarily renamed it).
1048 Since we can't distinguish between these two cases, we have to
1049 conservatively assume the first case and therefore must write out
1050 (not append) our known history to our local history file and try
1051 to move it back anyway. Otherwise a global history file would
1052 never get created! */
1053 gdb_assert (saved_errno
== ENOENT
);
1054 write_history (local_history_filename
);
1058 append_history (command_count
, local_history_filename
);
1059 if (history_is_stifled ())
1060 history_truncate_file (local_history_filename
, history_max_entries
);
1063 ret
= rename (local_history_filename
, history_filename
);
1064 saved_errno
= errno
;
1065 if (ret
< 0 && saved_errno
!= EEXIST
)
1066 warning (_("Could not rename %s to %s: %s"),
1067 local_history_filename
, history_filename
,
1068 safe_strerror (saved_errno
));
1071 do_cleanups (old_chain
);
1074 /* Read one line from the command input stream `instream' into a local
1075 static buffer. The buffer is made bigger as necessary. Returns
1076 the address of the start of the line.
1078 NULL is returned for end of file.
1080 *If* the instream == stdin & stdin is a terminal, the line read is
1081 copied into the global 'saved_command_line' so that it can be
1084 This routine either uses fancy command line editing or simple input
1085 as the user has requested. */
1088 command_line_input (const char *prompt_arg
, int repeat
, char *annotation_suffix
)
1090 static struct buffer cmd_line_buffer
;
1091 static int cmd_line_buffer_initialized
;
1092 struct ui
*ui
= current_ui
;
1093 const char *prompt
= prompt_arg
;
1096 /* The annotation suffix must be non-NULL. */
1097 if (annotation_suffix
== NULL
)
1098 annotation_suffix
= "";
1100 if (annotation_level
> 1 && ui
->instream
== stdin
)
1105 = (char *) alloca ((prompt
== NULL
? 0 : strlen (prompt
))
1106 + strlen (annotation_suffix
) + 40);
1108 local_prompt
[0] = '\0';
1110 strcpy (local_prompt
, prompt
);
1111 strcat (local_prompt
, "\n\032\032");
1112 strcat (local_prompt
, annotation_suffix
);
1113 strcat (local_prompt
, "\n");
1115 prompt
= local_prompt
;
1118 if (!cmd_line_buffer_initialized
)
1120 buffer_init (&cmd_line_buffer
);
1121 cmd_line_buffer_initialized
= 1;
1124 /* Starting a new command line. */
1125 cmd_line_buffer
.used_size
= 0;
1129 signal (STOP_SIGNAL
, handle_stop_sig
);
1136 /* Make sure that all output has been output. Some machines may
1137 let you get away with leaving out some of the gdb_flush, but
1140 gdb_flush (gdb_stdout
);
1141 gdb_flush (gdb_stderr
);
1143 if (source_file_name
!= NULL
)
1144 ++source_line_number
;
1146 if (annotation_level
> 1 && ui
->instream
== stdin
)
1148 puts_unfiltered ("\n\032\032pre-");
1149 puts_unfiltered (annotation_suffix
);
1150 puts_unfiltered ("\n");
1153 /* Don't use fancy stuff if not talking to stdin. */
1154 if (deprecated_readline_hook
&& input_from_terminal_p ())
1156 rl
= (*deprecated_readline_hook
) (prompt
);
1158 else if (command_editing_p
&& input_from_terminal_p ())
1160 rl
= gdb_readline_wrapper (prompt
);
1164 rl
= gdb_readline_no_editing (prompt
);
1167 cmd
= handle_line_of_input (&cmd_line_buffer
, rl
,
1168 repeat
, annotation_suffix
);
1169 if (cmd
== (char *) EOF
)
1182 signal (STOP_SIGNAL
, SIG_DFL
);
1188 /* Print the GDB banner. */
1190 print_gdb_version (struct ui_file
*stream
)
1192 /* From GNU coding standards, first line is meant to be easy for a
1193 program to parse, and is just canonical program name and version
1194 number, which starts after last space. */
1196 fprintf_filtered (stream
, "GNU gdb %s%s\n", PKGVERSION
, version
);
1198 /* Second line is a copyright notice. */
1200 fprintf_filtered (stream
,
1201 "Copyright (C) 2016 Free Software Foundation, Inc.\n");
1203 /* Following the copyright is a brief statement that the program is
1204 free software, that users are free to copy and change it on
1205 certain conditions, that it is covered by the GNU GPL, and that
1206 there is no warranty. */
1208 fprintf_filtered (stream
, "\
1209 License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>\
1210 \nThis is free software: you are free to change and redistribute it.\n\
1211 There is NO WARRANTY, to the extent permitted by law. Type \"show copying\"\n\
1212 and \"show warranty\" for details.\n");
1214 /* After the required info we print the configuration information. */
1216 fprintf_filtered (stream
, "This GDB was configured as \"");
1217 if (strcmp (host_name
, target_name
) != 0)
1219 fprintf_filtered (stream
, "--host=%s --target=%s",
1220 host_name
, target_name
);
1224 fprintf_filtered (stream
, "%s", host_name
);
1226 fprintf_filtered (stream
, "\".\n\
1227 Type \"show configuration\" for configuration details.");
1229 if (REPORT_BUGS_TO
[0])
1231 fprintf_filtered (stream
,
1232 _("\nFor bug reporting instructions, please see:\n"));
1233 fprintf_filtered (stream
, "%s.\n", REPORT_BUGS_TO
);
1235 fprintf_filtered (stream
,
1236 _("Find the GDB manual and other documentation \
1237 resources online at:\n<http://www.gnu.org/software/gdb/documentation/>.\n"));
1238 fprintf_filtered (stream
, _("For help, type \"help\".\n"));
1239 fprintf_filtered (stream
, _("Type \"apropos word\" to search for \
1240 commands related to \"word\"."));
1243 /* Print the details of GDB build-time configuration. */
1245 print_gdb_configuration (struct ui_file
*stream
)
1247 fprintf_filtered (stream
, _("\
1248 This GDB was configured as follows:\n\
1249 configure --host=%s --target=%s\n\
1250 "), host_name
, target_name
);
1251 fprintf_filtered (stream
, _("\
1252 --with-auto-load-dir=%s\n\
1253 --with-auto-load-safe-path=%s\n\
1254 "), AUTO_LOAD_DIR
, AUTO_LOAD_SAFE_PATH
);
1256 fprintf_filtered (stream
, _("\
1260 fprintf_filtered (stream
, _("\
1265 fprintf_filtered (stream
, _("\
1266 --with-gdb-datadir=%s%s\n\
1267 "), GDB_DATADIR
, GDB_DATADIR_RELOCATABLE
? " (relocatable)" : "");
1269 fprintf_filtered (stream
, _("\
1270 --with-iconv-bin=%s%s\n\
1271 "), ICONV_BIN
, ICONV_BIN_RELOCATABLE
? " (relocatable)" : "");
1273 if (JIT_READER_DIR
[0])
1274 fprintf_filtered (stream
, _("\
1275 --with-jit-reader-dir=%s%s\n\
1276 "), JIT_READER_DIR
, JIT_READER_DIR_RELOCATABLE
? " (relocatable)" : "");
1277 #if HAVE_LIBUNWIND_IA64_H
1278 fprintf_filtered (stream
, _("\
1279 --with-libunwind-ia64\n\
1282 fprintf_filtered (stream
, _("\
1283 --without-libunwind-ia64\n\
1287 fprintf_filtered (stream
, _("\
1291 fprintf_filtered (stream
, _("\
1295 #ifdef WITH_PYTHON_PATH
1296 fprintf_filtered (stream
, _("\
1297 --with-python=%s%s\n\
1298 "), WITH_PYTHON_PATH
, PYTHON_PATH_RELOCATABLE
? " (relocatable)" : "");
1301 fprintf_filtered (stream
, _("\
1305 fprintf_filtered (stream
, _("\
1310 fprintf_filtered (stream
, _("\
1311 --with-relocated-sources=%s\n\
1315 fprintf_filtered (stream
, _("\
1316 --with-separate-debug-dir=%s%s\n\
1317 "), DEBUGDIR
, DEBUGDIR_RELOCATABLE
? " (relocatable)" : "");
1318 if (TARGET_SYSTEM_ROOT
[0])
1319 fprintf_filtered (stream
, _("\
1320 --with-sysroot=%s%s\n\
1321 "), TARGET_SYSTEM_ROOT
, TARGET_SYSTEM_ROOT_RELOCATABLE
? " (relocatable)" : "");
1322 if (SYSTEM_GDBINIT
[0])
1323 fprintf_filtered (stream
, _("\
1324 --with-system-gdbinit=%s%s\n\
1325 "), SYSTEM_GDBINIT
, SYSTEM_GDBINIT_RELOCATABLE
? " (relocatable)" : "");
1326 #if HAVE_LIBBABELTRACE
1327 fprintf_filtered (stream
, _("\
1328 --with-babeltrace\n\
1331 fprintf_filtered (stream
, _("\
1332 --without-babeltrace\n\
1335 /* We assume "relocatable" will be printed at least once, thus we always
1336 print this text. It's a reasonably safe assumption for now. */
1337 fprintf_filtered (stream
, _("\n\
1338 (\"Relocatable\" means the directory can be moved with the GDB installation\n\
1339 tree, and GDB will still find it.)\n\
1344 /* The current top level prompt, settable with "set prompt", and/or
1345 with the python `gdb.prompt_hook' hook. */
1346 static char *top_prompt
;
1348 /* Access method for the GDB prompt string. */
1356 /* Set method for the GDB prompt string. */
1359 set_prompt (const char *s
)
1361 char *p
= xstrdup (s
);
1374 /* Callback for iterate_over_inferiors. Kills or detaches the given
1375 inferior, depending on how we originally gained control of it. */
1378 kill_or_detach (struct inferior
*inf
, void *args
)
1380 struct qt_args
*qt
= (struct qt_args
*) args
;
1381 struct thread_info
*thread
;
1386 thread
= any_thread_of_process (inf
->pid
);
1389 switch_to_thread (thread
->ptid
);
1391 /* Leave core files alone. */
1392 if (target_has_execution
)
1394 if (inf
->attach_flag
)
1395 target_detach (qt
->args
, qt
->from_tty
);
1404 /* Callback for iterate_over_inferiors. Prints info about what GDB
1405 will do to each inferior on a "quit". ARG points to a struct
1406 ui_out where output is to be collected. */
1409 print_inferior_quit_action (struct inferior
*inf
, void *arg
)
1411 struct ui_file
*stb
= (struct ui_file
*) arg
;
1416 if (inf
->attach_flag
)
1417 fprintf_filtered (stb
,
1418 _("\tInferior %d [%s] will be detached.\n"), inf
->num
,
1419 target_pid_to_str (pid_to_ptid (inf
->pid
)));
1421 fprintf_filtered (stb
,
1422 _("\tInferior %d [%s] will be killed.\n"), inf
->num
,
1423 target_pid_to_str (pid_to_ptid (inf
->pid
)));
1428 /* If necessary, make the user confirm that we should quit. Return
1429 non-zero if we should quit, zero if we shouldn't. */
1434 struct ui_file
*stb
;
1435 struct cleanup
*old_chain
;
1439 /* Don't even ask if we're only debugging a core file inferior. */
1440 if (!have_live_inferiors ())
1443 /* Build the query string as a single string. */
1444 stb
= mem_fileopen ();
1445 old_chain
= make_cleanup_ui_file_delete (stb
);
1447 fprintf_filtered (stb
, _("A debugging session is active.\n\n"));
1448 iterate_over_inferiors (print_inferior_quit_action
, stb
);
1449 fprintf_filtered (stb
, _("\nQuit anyway? "));
1451 str
= ui_file_xstrdup (stb
, NULL
);
1452 make_cleanup (xfree
, str
);
1454 qr
= query ("%s", str
);
1455 do_cleanups (old_chain
);
1459 /* Prepare to exit GDB cleanly by undoing any changes made to the
1460 terminal so that we leave the terminal in the state we acquired it. */
1463 undo_terminal_modifications_before_exit (void)
1465 struct ui
*saved_top_level
= current_ui
;
1467 target_terminal_ours ();
1469 current_ui
= main_ui
;
1474 gdb_disable_readline ();
1476 current_ui
= saved_top_level
;
1480 /* Quit without asking for confirmation. */
1483 quit_force (char *args
, int from_tty
)
1488 undo_terminal_modifications_before_exit ();
1490 /* An optional expression may be used to cause gdb to terminate with the
1491 value of that expression. */
1494 struct value
*val
= parse_and_eval (args
);
1496 exit_code
= (int) value_as_long (val
);
1498 else if (return_child_result
)
1499 exit_code
= return_child_result_value
;
1502 qt
.from_tty
= from_tty
;
1504 /* We want to handle any quit errors and exit regardless. */
1506 /* Get out of tfind mode, and kill or detach all inferiors. */
1509 disconnect_tracing ();
1510 iterate_over_inferiors (kill_or_detach
, &qt
);
1512 CATCH (ex
, RETURN_MASK_ALL
)
1514 exception_print (gdb_stderr
, ex
);
1518 /* Give all pushed targets a chance to do minimal cleanup, and pop
1524 CATCH (ex
, RETURN_MASK_ALL
)
1526 exception_print (gdb_stderr
, ex
);
1530 /* Save the history information if it is appropriate to do so. */
1533 if (write_history_p
&& history_filename
1534 && input_from_terminal_p ())
1535 gdb_safe_append_history ();
1537 CATCH (ex
, RETURN_MASK_ALL
)
1539 exception_print (gdb_stderr
, ex
);
1543 /* Do any final cleanups before exiting. */
1546 do_final_cleanups (all_cleanups ());
1548 CATCH (ex
, RETURN_MASK_ALL
)
1550 exception_print (gdb_stderr
, ex
);
1557 /* Returns whether GDB is running on a terminal and input is
1558 currently coming from that terminal. */
1561 input_from_terminal_p (void)
1563 struct ui
*ui
= current_ui
;
1568 if (gdb_has_a_terminal () && ui
->instream
== stdin
)
1571 /* If INSTREAM is unset, and we are not in a user command, we
1572 must be in Insight. That's like having a terminal, for our
1574 if (ui
->instream
== NULL
&& !in_user_command
)
1581 dont_repeat_command (char *ignored
, int from_tty
)
1583 /* Can't call dont_repeat here because we're not necessarily reading
1585 *saved_command_line
= 0;
1588 /* Functions to manipulate command line editing control variables. */
1590 /* Number of commands to print in each call to show_commands. */
1591 #define Hist_print 10
1593 show_commands (char *args
, int from_tty
)
1595 /* Index for history commands. Relative to history_base. */
1598 /* Number of the history entry which we are planning to display next.
1599 Relative to history_base. */
1602 /* Print out some of the commands from the command history. */
1606 if (args
[0] == '+' && args
[1] == '\0')
1607 /* "info editing +" should print from the stored position. */
1610 /* "info editing <exp>" should print around command number <exp>. */
1611 num
= (parse_and_eval_long (args
) - history_base
) - Hist_print
/ 2;
1613 /* "show commands" means print the last Hist_print commands. */
1616 num
= history_length
- Hist_print
;
1622 /* If there are at least Hist_print commands, we want to display the last
1623 Hist_print rather than, say, the last 6. */
1624 if (history_length
- num
< Hist_print
)
1626 num
= history_length
- Hist_print
;
1632 offset
< num
+ Hist_print
&& offset
< history_length
;
1635 printf_filtered ("%5d %s\n", history_base
+ offset
,
1636 (history_get (history_base
+ offset
))->line
);
1639 /* The next command we want to display is the next one that we haven't
1643 /* If the user repeats this command with return, it should do what
1644 "show commands +" does. This is unnecessary if arg is null,
1645 because "show commands +" is not useful after "show commands". */
1646 if (from_tty
&& args
)
1653 /* Update the size of our command history file to HISTORY_SIZE.
1655 A HISTORY_SIZE of -1 stands for unlimited. */
1658 set_readline_history_size (int history_size
)
1660 gdb_assert (history_size
>= -1);
1662 if (history_size
== -1)
1663 unstifle_history ();
1665 stifle_history (history_size
);
1668 /* Called by do_setshow_command. */
1670 set_history_size_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
1672 set_readline_history_size (history_size_setshow_var
);
1676 set_history (char *args
, int from_tty
)
1678 printf_unfiltered (_("\"set history\" must be followed "
1679 "by the name of a history subcommand.\n"));
1680 help_list (sethistlist
, "set history ", all_commands
, gdb_stdout
);
1684 show_history (char *args
, int from_tty
)
1686 cmd_show_list (showhistlist
, from_tty
, "");
1689 int info_verbose
= 0; /* Default verbose msgs off. */
1691 /* Called by do_setshow_command. An elaborate joke. */
1693 set_verbose (char *args
, int from_tty
, struct cmd_list_element
*c
)
1695 const char *cmdname
= "verbose";
1696 struct cmd_list_element
*showcmd
;
1698 showcmd
= lookup_cmd_1 (&cmdname
, showlist
, NULL
, 1);
1699 gdb_assert (showcmd
!= NULL
&& showcmd
!= CMD_LIST_AMBIGUOUS
);
1703 c
->doc
= "Set verbose printing of informational messages.";
1704 showcmd
->doc
= "Show verbose printing of informational messages.";
1708 c
->doc
= "Set verbosity.";
1709 showcmd
->doc
= "Show verbosity.";
1713 /* Init the history buffer. Note that we are called after the init file(s)
1714 have been read so that the user can change the history file via his
1715 .gdbinit file (for instance). The GDBHISTFILE environment variable
1716 overrides all of this. */
1723 tmpenv
= getenv ("GDBHISTSIZE");
1730 tmpenv
= skip_spaces (tmpenv
);
1732 var
= strtol (tmpenv
, &endptr
, 10);
1733 saved_errno
= errno
;
1734 endptr
= skip_spaces (endptr
);
1736 /* If GDBHISTSIZE is non-numeric then ignore it. If GDBHISTSIZE is the
1737 empty string, a negative number or a huge positive number (larger than
1738 INT_MAX) then set the history size to unlimited. Otherwise set our
1739 history size to the number we have read. This behavior is consistent
1740 with how bash handles HISTSIZE. */
1741 if (*endptr
!= '\0')
1743 else if (*tmpenv
== '\0'
1746 /* On targets where INT_MAX == LONG_MAX, we have to look at
1747 errno after calling strtol to distinguish between a value that
1748 is exactly INT_MAX and an overflowing value that was clamped
1750 || (var
== INT_MAX
&& saved_errno
== ERANGE
))
1751 history_size_setshow_var
= -1;
1753 history_size_setshow_var
= var
;
1756 /* If neither the init file nor GDBHISTSIZE has set a size yet, pick the
1758 if (history_size_setshow_var
== -2)
1759 history_size_setshow_var
= 256;
1761 set_readline_history_size (history_size_setshow_var
);
1763 tmpenv
= getenv ("GDBHISTFILE");
1765 history_filename
= xstrdup (tmpenv
);
1766 else if (!history_filename
)
1768 /* We include the current directory so that if the user changes
1769 directories the file written will be the same as the one
1772 /* No leading dots in file names are allowed on MSDOS. */
1773 history_filename
= concat (current_directory
, "/_gdb_history",
1776 history_filename
= concat (current_directory
, "/.gdb_history",
1780 read_history (history_filename
);
1784 show_prompt (struct ui_file
*file
, int from_tty
,
1785 struct cmd_list_element
*c
, const char *value
)
1787 fprintf_filtered (file
, _("Gdb's prompt is \"%s\".\n"), value
);
1790 /* "set editing" command. */
1793 set_editing (char *args
, int from_tty
, struct cmd_list_element
*c
)
1795 change_line_handler (set_editing_cmd_var
);
1796 /* Update the control variable so that MI's =cmd-param-changed event
1797 shows the correct value. */
1798 set_editing_cmd_var
= current_ui
->command_editing
;
1802 show_editing (struct ui_file
*file
, int from_tty
,
1803 struct cmd_list_element
*c
, const char *value
)
1805 fprintf_filtered (file
, _("Editing of command lines as "
1806 "they are typed is %s.\n"),
1807 current_ui
->command_editing
? _("on") : _("off"));
1811 show_annotation_level (struct ui_file
*file
, int from_tty
,
1812 struct cmd_list_element
*c
, const char *value
)
1814 fprintf_filtered (file
, _("Annotation_level is %s.\n"), value
);
1818 show_exec_done_display_p (struct ui_file
*file
, int from_tty
,
1819 struct cmd_list_element
*c
, const char *value
)
1821 fprintf_filtered (file
, _("Notification of completion for "
1822 "asynchronous execution commands is %s.\n"),
1826 /* New values of the "data-directory" parameter are staged here. */
1827 static char *staged_gdb_datadir
;
1829 /* "set" command for the gdb_datadir configuration variable. */
1832 set_gdb_datadir (char *args
, int from_tty
, struct cmd_list_element
*c
)
1834 set_gdb_data_directory (staged_gdb_datadir
);
1835 observer_notify_gdb_datadir_changed ();
1838 /* "show" command for the gdb_datadir configuration variable. */
1841 show_gdb_datadir (struct ui_file
*file
, int from_tty
,
1842 struct cmd_list_element
*c
, const char *value
)
1844 fprintf_filtered (file
, _("GDB's data directory is \"%s\".\n"),
1849 set_history_filename (char *args
, int from_tty
, struct cmd_list_element
*c
)
1851 /* We include the current directory so that if the user changes
1852 directories the file written will be the same as the one
1854 if (!IS_ABSOLUTE_PATH (history_filename
))
1855 history_filename
= reconcat (history_filename
, current_directory
, "/",
1856 history_filename
, (char *) NULL
);
1862 /* Initialize the prompt to a simple "(gdb) " prompt or to whatever
1863 the DEFAULT_PROMPT is. */
1864 set_prompt (DEFAULT_PROMPT
);
1866 /* Set the important stuff up for command editing. */
1867 command_editing_p
= 1;
1868 history_expansion_p
= 0;
1869 write_history_p
= 0;
1871 /* Setup important stuff for command line editing. */
1872 rl_completion_word_break_hook
= gdb_completion_word_break_characters
;
1873 rl_completion_entry_function
= readline_line_completion_function
;
1874 rl_completer_word_break_characters
= default_word_break_characters ();
1875 rl_completer_quote_characters
= get_gdb_completer_quote_characters ();
1876 rl_completion_display_matches_hook
= cli_display_match_list
;
1877 rl_readline_name
= "gdb";
1878 rl_terminal_name
= getenv ("TERM");
1880 /* The name for this defun comes from Bash, where it originated.
1881 15 is Control-o, the same binding this function has in Bash. */
1882 rl_add_defun ("operate-and-get-next", gdb_rl_operate_and_get_next
, 15);
1884 add_setshow_string_cmd ("prompt", class_support
,
1886 _("Set gdb's prompt"),
1887 _("Show gdb's prompt"),
1890 &setlist
, &showlist
);
1892 add_com ("dont-repeat", class_support
, dont_repeat_command
, _("\
1893 Don't repeat this command.\nPrimarily \
1894 used inside of user-defined commands that should not be repeated when\n\
1897 add_setshow_boolean_cmd ("editing", class_support
,
1898 &set_editing_cmd_var
, _("\
1899 Set editing of command lines as they are typed."), _("\
1900 Show editing of command lines as they are typed."), _("\
1901 Use \"on\" to enable the editing, and \"off\" to disable it.\n\
1902 Without an argument, command line editing is enabled. To edit, use\n\
1903 EMACS-like or VI-like commands like control-P or ESC."),
1906 &setlist
, &showlist
);
1908 add_setshow_boolean_cmd ("save", no_class
, &write_history_p
, _("\
1909 Set saving of the history record on exit."), _("\
1910 Show saving of the history record on exit."), _("\
1911 Use \"on\" to enable the saving, and \"off\" to disable it.\n\
1912 Without an argument, saving is enabled."),
1914 show_write_history_p
,
1915 &sethistlist
, &showhistlist
);
1917 add_setshow_zuinteger_unlimited_cmd ("size", no_class
,
1918 &history_size_setshow_var
, _("\
1919 Set the size of the command history,"), _("\
1920 Show the size of the command history,"), _("\
1921 ie. the number of previous commands to keep a record of.\n\
1922 If set to \"unlimited\", the number of commands kept in the history\n\
1923 list is unlimited. This defaults to the value of the environment\n\
1924 variable \"GDBHISTSIZE\", or to 256 if this variable is not set."),
1925 set_history_size_command
,
1927 &sethistlist
, &showhistlist
);
1929 add_setshow_zuinteger_unlimited_cmd ("remove-duplicates", no_class
,
1930 &history_remove_duplicates
, _("\
1931 Set how far back in history to look for and remove duplicate entries."), _("\
1932 Show how far back in history to look for and remove duplicate entries."), _("\
1933 If set to a nonzero value N, GDB will look back at the last N history entries\n\
1934 and remove the first history entry that is a duplicate of the most recent\n\
1935 entry, each time a new history entry is added.\n\
1936 If set to \"unlimited\", this lookbehind is unbounded.\n\
1937 Only history entries added during this session are considered for removal.\n\
1938 If set to 0, removal of duplicate history entries is disabled.\n\
1939 By default this option is set to 0."),
1941 show_history_remove_duplicates
,
1942 &sethistlist
, &showhistlist
);
1944 add_setshow_filename_cmd ("filename", no_class
, &history_filename
, _("\
1945 Set the filename in which to record the command history"), _("\
1946 Show the filename in which to record the command history"), _("\
1947 (the list of previous commands of which a record is kept)."),
1948 set_history_filename
,
1949 show_history_filename
,
1950 &sethistlist
, &showhistlist
);
1952 add_setshow_boolean_cmd ("confirm", class_support
, &confirm
, _("\
1953 Set whether to confirm potentially dangerous operations."), _("\
1954 Show whether to confirm potentially dangerous operations."), NULL
,
1957 &setlist
, &showlist
);
1959 add_setshow_zinteger_cmd ("annotate", class_obscure
, &annotation_level
, _("\
1960 Set annotation_level."), _("\
1961 Show annotation_level."), _("\
1962 0 == normal; 1 == fullname (for use when running under emacs)\n\
1963 2 == output annotated suitably for use by programs that control GDB."),
1965 show_annotation_level
,
1966 &setlist
, &showlist
);
1968 add_setshow_boolean_cmd ("exec-done-display", class_support
,
1969 &exec_done_display_p
, _("\
1970 Set notification of completion for asynchronous execution commands."), _("\
1971 Show notification of completion for asynchronous execution commands."), _("\
1972 Use \"on\" to enable the notification, and \"off\" to disable it."),
1974 show_exec_done_display_p
,
1975 &setlist
, &showlist
);
1977 add_setshow_filename_cmd ("data-directory", class_maintenance
,
1978 &staged_gdb_datadir
, _("Set GDB's data directory."),
1979 _("Show GDB's data directory."),
1981 When set, GDB uses the specified path to search for data files."),
1982 set_gdb_datadir
, show_gdb_datadir
,
1988 gdb_init (char *argv0
)
1990 if (pre_init_ui_hook
)
1991 pre_init_ui_hook ();
1993 /* Run the init function of each source file. */
1996 /* Make sure we return to the original directory upon exit, come
1997 what may, since the OS doesn't do that for us. */
1998 make_final_cleanup (do_chdir_cleanup
, xstrdup (current_directory
));
2001 init_cmd_lists (); /* This needs to be done first. */
2002 initialize_targets (); /* Setup target_terminal macros for utils.c. */
2003 initialize_utils (); /* Make errors and warnings possible. */
2007 /* Here is where we call all the _initialize_foo routines. */
2008 initialize_all_files ();
2010 /* This creates the current_program_space. Do this after all the
2011 _initialize_foo routines have had a chance to install their
2012 per-sspace data keys. Also do this before
2013 initialize_current_architecture is called, because it accesses
2014 exec_bfd of the current program space. */
2015 initialize_progspace ();
2016 initialize_inferiors ();
2017 initialize_current_architecture ();
2019 init_main (); /* But that omits this file! Do it now. */
2021 initialize_stdin_serial ();
2023 /* Take a snapshot of our tty state before readline/ncurses have had a chance
2025 set_initial_gdb_ttystate ();
2027 async_init_signals ();
2029 /* We need a default language for parsing expressions, so simple
2030 things like "set width 0" won't fail if no language is explicitly
2031 set in a config file or implicitly set by reading an executable
2033 set_language (language_c
);
2034 expected_language
= current_language
; /* Don't warn about the change. */
2036 /* Python initialization, for example, can require various commands to be
2037 installed. For example "info pretty-printer" needs the "info"
2038 prefix to be installed. Keep things simple and just do final
2039 script initialization here. */
2040 finish_ext_lang_initialization ();