1 /* Memory-access and commands for "inferior" process, for GDB.
3 Copyright (C) 1986-2015 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
21 #include "arch-utils.h"
36 #include "completer.h"
38 #include "event-top.h"
39 #include "parser-defs.h"
41 #include "reggroups.h"
46 #include "target-descriptions.h"
47 #include "user-regs.h"
48 #include "cli/cli-decode.h"
49 #include "gdbthread.h"
51 #include "inline-frame.h"
52 #include "tracepoint.h"
54 #include "continuations.h"
56 #include "cli/cli-utils.h"
59 /* Local functions: */
61 static void nofp_registers_info (char *, int);
63 static void until_next_command (int);
65 static void until_command (char *, int);
67 static void path_info (char *, int);
69 static void path_command (char *, int);
71 static void unset_command (char *, int);
73 static void float_info (char *, int);
75 static void disconnect_command (char *, int);
77 static void unset_environment_command (char *, int);
79 static void set_environment_command (char *, int);
81 static void environment_info (char *, int);
83 static void program_info (char *, int);
85 static void finish_command (char *, int);
87 static void signal_command (char *, int);
89 static void jump_command (char *, int);
91 static void step_1 (int, int, char *);
92 static void step_once (int skip_subroutines
, int single_inst
,
93 int count
, int thread
);
95 static void next_command (char *, int);
97 static void step_command (char *, int);
99 static void run_command (char *, int);
101 void _initialize_infcmd (void);
103 #define ERROR_NO_INFERIOR \
104 if (!target_has_execution) error (_("The program is not being run."));
106 /* Scratch area where string containing arguments to give to the
107 program will be stored by 'set args'. As soon as anything is
108 stored, notice_args_set will move it into per-inferior storage.
109 Arguments are separated by spaces. Empty string (pointer to '\0')
112 static char *inferior_args_scratch
;
114 /* Scratch area where 'set inferior-tty' will store user-provided value.
115 We'll immediate copy it into per-inferior storage. */
117 static char *inferior_io_terminal_scratch
;
119 /* Pid of our debugged inferior, or 0 if no inferior now.
120 Since various parts of infrun.c test this to see whether there is a program
121 being debugged it should be nonzero (currently 3 is used) for remote
124 ptid_t inferior_ptid
;
126 /* Address at which inferior stopped. */
130 /* Nonzero if stopped due to completion of a stack dummy routine. */
132 enum stop_stack_kind stop_stack_dummy
;
134 /* Nonzero if stopped due to a random (unexpected) signal in inferior
137 int stopped_by_random_signal
;
139 /* See inferior.h. */
141 int startup_with_shell
= 1;
144 /* Accessor routines. */
146 /* Set the io terminal for the current inferior. Ownership of
147 TERMINAL_NAME is not transferred. */
150 set_inferior_io_terminal (const char *terminal_name
)
152 xfree (current_inferior ()->terminal
);
153 current_inferior ()->terminal
= terminal_name
? xstrdup (terminal_name
) : 0;
157 get_inferior_io_terminal (void)
159 return current_inferior ()->terminal
;
163 set_inferior_tty_command (char *args
, int from_tty
,
164 struct cmd_list_element
*c
)
166 /* CLI has assigned the user-provided value to inferior_io_terminal_scratch.
167 Now route it to current inferior. */
168 set_inferior_io_terminal (inferior_io_terminal_scratch
);
172 show_inferior_tty_command (struct ui_file
*file
, int from_tty
,
173 struct cmd_list_element
*c
, const char *value
)
175 /* Note that we ignore the passed-in value in favor of computing it
177 const char *inferior_io_terminal
= get_inferior_io_terminal ();
179 if (inferior_io_terminal
== NULL
)
180 inferior_io_terminal
= "";
181 fprintf_filtered (gdb_stdout
,
182 _("Terminal for future runs of program being debugged "
183 "is \"%s\".\n"), inferior_io_terminal
);
187 get_inferior_args (void)
189 if (current_inferior ()->argc
!= 0)
193 n
= construct_inferior_arguments (current_inferior ()->argc
,
194 current_inferior ()->argv
);
195 set_inferior_args (n
);
199 if (current_inferior ()->args
== NULL
)
200 current_inferior ()->args
= xstrdup ("");
202 return current_inferior ()->args
;
205 /* Set the arguments for the current inferior. Ownership of
206 NEWARGS is not transferred. */
209 set_inferior_args (char *newargs
)
211 xfree (current_inferior ()->args
);
212 current_inferior ()->args
= newargs
? xstrdup (newargs
) : NULL
;
213 current_inferior ()->argc
= 0;
214 current_inferior ()->argv
= 0;
218 set_inferior_args_vector (int argc
, char **argv
)
220 current_inferior ()->argc
= argc
;
221 current_inferior ()->argv
= argv
;
224 /* Notice when `set args' is run. */
227 set_args_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
229 /* CLI has assigned the user-provided value to inferior_args_scratch.
230 Now route it to current inferior. */
231 set_inferior_args (inferior_args_scratch
);
234 /* Notice when `show args' is run. */
237 show_args_command (struct ui_file
*file
, int from_tty
,
238 struct cmd_list_element
*c
, const char *value
)
240 /* Note that we ignore the passed-in value in favor of computing it
242 deprecated_show_value_hack (file
, from_tty
, c
, get_inferior_args ());
246 /* Compute command-line string given argument vector. This does the
247 same shell processing as fork_inferior. */
250 construct_inferior_arguments (int argc
, char **argv
)
254 if (startup_with_shell
)
257 /* This holds all the characters considered special to the
259 char *special
= "\"!&*|[]{}<>?`~^=;, \t\n";
260 const char quote
= '"';
262 /* This holds all the characters considered special to the
263 typical Unix shells. We include `^' because the SunOS
264 /bin/sh treats it as a synonym for `|'. */
265 char *special
= "\"!#$&*()\\|[]{}<>?'`~^; \t\n";
266 const char quote
= '\'';
272 /* We over-compute the size. It shouldn't matter. */
273 for (i
= 0; i
< argc
; ++i
)
274 length
+= 3 * strlen (argv
[i
]) + 1 + 2 * (argv
[i
][0] == '\0');
276 result
= (char *) xmalloc (length
);
279 for (i
= 0; i
< argc
; ++i
)
284 /* Need to handle empty arguments specially. */
285 if (argv
[i
][0] == '\0')
295 if (strpbrk (argv
[i
], special
))
301 for (cp
= argv
[i
]; *cp
; ++cp
)
305 /* A newline cannot be quoted with a backslash (it
306 just disappears), only by putting it inside
317 if (strchr (special
, *cp
) != NULL
)
333 /* In this case we can't handle arguments that contain spaces,
334 tabs, or newlines -- see breakup_args(). */
338 for (i
= 0; i
< argc
; ++i
)
340 char *cp
= strchr (argv
[i
], ' ');
342 cp
= strchr (argv
[i
], '\t');
344 cp
= strchr (argv
[i
], '\n');
346 error (_("can't handle command-line "
347 "argument containing whitespace"));
348 length
+= strlen (argv
[i
]) + 1;
351 result
= (char *) xmalloc (length
);
353 for (i
= 0; i
< argc
; ++i
)
356 strcat (result
, " ");
357 strcat (result
, argv
[i
]);
365 /* This function strips the '&' character (indicating background
366 execution) that is added as *the last* of the arguments ARGS of a
367 command. A copy of the incoming ARGS without the '&' is returned,
368 unless the resulting string after stripping is empty, in which case
369 NULL is returned. *BG_CHAR_P is an output boolean that indicates
370 whether the '&' character was found. */
373 strip_bg_char (const char *args
, int *bg_char_p
)
377 if (args
== NULL
|| *args
== '\0')
383 p
= args
+ strlen (args
);
387 while (p
> args
&& isspace (p
[-1]))
392 return savestring (args
, p
- args
);
398 return xstrdup (args
);
401 /* Common actions to take after creating any sort of inferior, by any
402 means (running, attaching, connecting, et cetera). The target
403 should be stopped. */
406 post_create_inferior (struct target_ops
*target
, int from_tty
)
409 /* Be sure we own the terminal in case write operations are performed. */
410 target_terminal_ours ();
412 /* If the target hasn't taken care of this already, do it now.
413 Targets which need to access registers during to_open,
414 to_create_inferior, or to_attach should do it earlier; but many
416 target_find_description ();
418 /* Now that we know the register layout, retrieve current PC. But
419 if the PC is unavailable (e.g., we're opening a core file with
420 missing registers info), ignore it. */
424 stop_pc
= regcache_read_pc (get_current_regcache ());
426 CATCH (ex
, RETURN_MASK_ERROR
)
428 if (ex
.error
!= NOT_AVAILABLE_ERROR
)
429 throw_exception (ex
);
435 const unsigned solib_add_generation
436 = current_program_space
->solib_add_generation
;
438 /* Create the hooks to handle shared library load and unload
440 solib_create_inferior_hook (from_tty
);
442 if (current_program_space
->solib_add_generation
== solib_add_generation
)
444 /* The platform-specific hook should load initial shared libraries,
445 but didn't. FROM_TTY will be incorrectly 0 but such solib
446 targets should be fixed anyway. Call it only after the solib
447 target has been initialized by solib_create_inferior_hook. */
450 warning (_("platform-specific solib_create_inferior_hook did "
451 "not load initial shared libraries."));
453 /* If the solist is global across processes, there's no need to
455 if (!gdbarch_has_global_solist (target_gdbarch ()))
456 solib_add (NULL
, 0, target
, auto_solib_add
);
460 /* If the user sets watchpoints before execution having started,
461 then she gets software watchpoints, because GDB can't know which
462 target will end up being pushed, or if it supports hardware
463 watchpoints or not. breakpoint_re_set takes care of promoting
464 watchpoints to hardware watchpoints if possible, however, if this
465 new inferior doesn't load shared libraries or we don't pull in
466 symbols from any other source on this target/arch,
467 breakpoint_re_set is never called. Call it now so that software
468 watchpoints get a chance to be promoted to hardware watchpoints
469 if the now pushed target supports hardware watchpoints. */
470 breakpoint_re_set ();
472 observer_notify_inferior_created (target
, from_tty
);
475 /* Kill the inferior if already running. This function is designed
476 to be called when we are about to start the execution of the program
477 from the beginning. Ask the user to confirm that he wants to restart
478 the program being debugged when FROM_TTY is non-null. */
481 kill_if_already_running (int from_tty
)
483 if (! ptid_equal (inferior_ptid
, null_ptid
) && target_has_execution
)
485 /* Bail out before killing the program if we will not be able to
487 target_require_runnable ();
490 && !query (_("The program being debugged has been started already.\n\
491 Start it from the beginning? ")))
492 error (_("Program not restarted."));
497 /* See inferior.h. */
500 prepare_execution_command (struct target_ops
*target
, int background
)
502 /* If we get a request for running in the bg but the target
503 doesn't support it, error out. */
504 if (background
&& !target
->to_can_async_p (target
))
505 error (_("Asynchronous execution not supported on this target."));
509 /* If we get a request for running in the fg, then we need to
510 simulate synchronous (fg) execution. Note no cleanup is
511 necessary for this. stdin is re-enabled whenever an error
512 reaches the top level. */
513 async_disable_stdin ();
517 /* Implement the "run" command. If TBREAK_AT_MAIN is set, then insert
518 a temporary breakpoint at the begining of the main program before
519 running the program. */
522 run_command_1 (char *args
, int from_tty
, int tbreak_at_main
)
525 struct cleanup
*old_chain
;
527 struct ui_out
*uiout
= current_uiout
;
528 struct target_ops
*run_target
;
530 struct cleanup
*args_chain
;
534 kill_if_already_running (from_tty
);
536 init_wait_for_inferior ();
537 clear_breakpoint_hit_counts ();
539 /* Clean up any leftovers from other runs. Some other things from
540 this function should probably be moved into target_pre_inferior. */
541 target_pre_inferior (from_tty
);
543 /* The comment here used to read, "The exec file is re-read every
544 time we do a generic_mourn_inferior, so we just have to worry
545 about the symbol file." The `generic_mourn_inferior' function
546 gets called whenever the program exits. However, suppose the
547 program exits, and *then* the executable file changes? We need
548 to check again here. Since reopen_exec_file doesn't do anything
549 if the timestamp hasn't changed, I don't see the harm. */
553 args
= strip_bg_char (args
, &async_exec
);
554 args_chain
= make_cleanup (xfree
, args
);
556 /* Do validation and preparation before possibly changing anything
559 run_target
= find_run_target ();
561 prepare_execution_command (run_target
, async_exec
);
563 if (non_stop
&& !run_target
->to_supports_non_stop (run_target
))
564 error (_("The target does not support running in non-stop mode."));
566 /* Done. Can now set breakpoints, change inferior args, etc. */
568 /* Insert the temporary breakpoint if a location was specified. */
570 tbreak_command (main_name (), 0);
572 exec_file
= (char *) get_exec_file (0);
574 /* We keep symbols from add-symbol-file, on the grounds that the
575 user might want to add some symbols before running the program
576 (right?). But sometimes (dynamic loading where the user manually
577 introduces the new symbols with add-symbol-file), the code which
578 the symbols describe does not persist between runs. Currently
579 the user has to manually nuke all symbols between runs if they
580 want them to go away (PR 2207). This is probably reasonable. */
582 /* If there were other args, beside '&', process them. */
584 set_inferior_args (args
);
588 ui_out_field_string (uiout
, NULL
, "Starting program");
589 ui_out_text (uiout
, ": ");
591 ui_out_field_string (uiout
, "execfile", exec_file
);
592 ui_out_spaces (uiout
, 1);
593 /* We call get_inferior_args() because we might need to compute
595 ui_out_field_string (uiout
, "infargs", get_inferior_args ());
596 ui_out_text (uiout
, "\n");
597 ui_out_flush (uiout
);
600 /* Done with ARGS. */
601 do_cleanups (args_chain
);
603 /* We call get_inferior_args() because we might need to compute
605 run_target
->to_create_inferior (run_target
, exec_file
, get_inferior_args (),
606 environ_vector (current_inferior ()->environment
),
608 /* to_create_inferior should push the target, so after this point we
609 shouldn't refer to run_target again. */
612 /* We're starting off a new process. When we get out of here, in
613 non-stop mode, finish the state of all threads of that process,
614 but leave other threads alone, as they may be stopped in internal
615 events --- the frontend shouldn't see them as stopped. In
616 all-stop, always finish the state of all threads, as we may be
617 resuming more than just the new process. */
619 ptid
= pid_to_ptid (ptid_get_pid (inferior_ptid
));
621 ptid
= minus_one_ptid
;
622 old_chain
= make_cleanup (finish_thread_state_cleanup
, &ptid
);
624 /* Pass zero for FROM_TTY, because at this point the "run" command
625 has done its thing; now we are setting up the running program. */
626 post_create_inferior (¤t_target
, 0);
628 /* Start the target running. Do not use -1 continuation as it would skip
629 breakpoint right at the entry point. */
630 proceed (regcache_read_pc (get_current_regcache ()), GDB_SIGNAL_0
);
632 /* Since there was no error, there's no need to finish the thread
634 discard_cleanups (old_chain
);
638 run_command (char *args
, int from_tty
)
640 run_command_1 (args
, from_tty
, 0);
643 /* Start the execution of the program up until the beginning of the main
647 start_command (char *args
, int from_tty
)
649 /* Some languages such as Ada need to search inside the program
650 minimal symbols for the location where to put the temporary
651 breakpoint before starting. */
652 if (!have_minimal_symbols ())
653 error (_("No symbol table loaded. Use the \"file\" command."));
655 /* Run the program until reaching the main procedure... */
656 run_command_1 (args
, from_tty
, 1);
660 proceed_thread_callback (struct thread_info
*thread
, void *arg
)
662 /* We go through all threads individually instead of compressing
663 into a single target `resume_all' request, because some threads
664 may be stopped in internal breakpoints/events, or stopped waiting
665 for its turn in the displaced stepping queue (that is, they are
666 running && !executing). The target side has no idea about why
667 the thread is stopped, so a `resume_all' command would resume too
668 much. If/when GDB gains a way to tell the target `hold this
669 thread stopped until I say otherwise', then we can optimize
671 if (!is_stopped (thread
->ptid
))
674 switch_to_thread (thread
->ptid
);
675 clear_proceed_status (0);
676 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
);
681 ensure_valid_thread (void)
683 if (ptid_equal (inferior_ptid
, null_ptid
)
684 || is_exited (inferior_ptid
))
685 error (_("Cannot execute this command without a live selected thread."));
688 /* If the user is looking at trace frames, any resumption of execution
689 is likely to mix up recorded and live target data. So simply
690 disallow those commands. */
693 ensure_not_tfind_mode (void)
695 if (get_traceframe_number () >= 0)
696 error (_("Cannot execute this command while looking at trace frames."));
699 /* Throw an error indicating the current thread is running. */
702 error_is_running (void)
704 error (_("Cannot execute this command while "
705 "the selected thread is running."));
708 /* Calls error_is_running if the current thread is running. */
711 ensure_not_running (void)
713 if (is_running (inferior_ptid
))
718 continue_1 (int all_threads
)
721 ensure_not_tfind_mode ();
723 if (non_stop
&& all_threads
)
725 /* Don't error out if the current thread is running, because
726 there may be other stopped threads. */
727 struct cleanup
*old_chain
;
729 /* Backup current thread and selected frame. */
730 old_chain
= make_cleanup_restore_current_thread ();
732 iterate_over_threads (proceed_thread_callback
, NULL
);
736 /* If all threads in the target were already running,
737 proceed_thread_callback ends up never calling proceed,
738 and so nothing calls this to put the inferior's terminal
739 settings in effect and remove stdin from the event loop,
740 which we must when running a foreground command. E.g.:
744 <all threads are running now>
747 <no thread was resumed, but the inferior now owns the terminal>
749 target_terminal_inferior ();
752 /* Restore selected ptid. */
753 do_cleanups (old_chain
);
757 ensure_valid_thread ();
758 ensure_not_running ();
759 clear_proceed_status (0);
760 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
);
764 /* continue [-a] [proceed-count] [&] */
767 continue_command (char *args
, int from_tty
)
771 struct cleanup
*args_chain
;
775 /* Find out whether we must run in the background. */
776 args
= strip_bg_char (args
, &async_exec
);
777 args_chain
= make_cleanup (xfree
, args
);
779 prepare_execution_command (¤t_target
, async_exec
);
783 if (startswith (args
, "-a"))
786 args
+= sizeof ("-a") - 1;
792 if (!non_stop
&& all_threads
)
793 error (_("`-a' is meaningless in all-stop mode."));
795 if (args
!= NULL
&& all_threads
)
796 error (_("Can't resume all threads and specify "
797 "proceed count simultaneously."));
799 /* If we have an argument left, set proceed count of breakpoint we
806 struct thread_info
*tp
;
809 tp
= find_thread_ptid (inferior_ptid
);
813 struct target_waitstatus ws
;
815 get_last_target_status (&last_ptid
, &ws
);
816 tp
= find_thread_ptid (last_ptid
);
819 bs
= tp
->control
.stop_bpstat
;
821 while ((stat
= bpstat_num (&bs
, &num
)) != 0)
824 set_ignore_count (num
,
825 parse_and_eval_long (args
) - 1,
827 /* set_ignore_count prints a message ending with a period.
828 So print two spaces before "Continuing.". */
830 printf_filtered (" ");
834 if (!stopped
&& from_tty
)
837 ("Not stopped at any breakpoint; argument ignored.\n");
841 /* Done with ARGS. */
842 do_cleanups (args_chain
);
845 printf_filtered (_("Continuing.\n"));
847 continue_1 (all_threads
);
850 /* Record the starting point of a "step" or "next" command. */
853 set_step_frame (void)
855 struct symtab_and_line sal
;
857 struct frame_info
*frame
= get_current_frame ();
858 struct thread_info
*tp
= inferior_thread ();
860 find_frame_sal (frame
, &sal
);
861 set_step_info (frame
, sal
);
862 pc
= get_frame_pc (frame
);
863 tp
->control
.step_start_function
= find_pc_function (pc
);
866 /* Step until outside of current statement. */
869 step_command (char *count_string
, int from_tty
)
871 step_1 (0, 0, count_string
);
874 /* Likewise, but skip over subroutine calls as if single instructions. */
877 next_command (char *count_string
, int from_tty
)
879 step_1 (1, 0, count_string
);
882 /* Likewise, but step only one instruction. */
885 stepi_command (char *count_string
, int from_tty
)
887 step_1 (0, 1, count_string
);
891 nexti_command (char *count_string
, int from_tty
)
893 step_1 (1, 1, count_string
);
897 delete_longjmp_breakpoint_cleanup (void *arg
)
899 int thread
= * (int *) arg
;
900 delete_longjmp_breakpoint (thread
);
904 step_1 (int skip_subroutines
, int single_inst
, char *count_string
)
907 struct cleanup
*cleanups
= make_cleanup (null_cleanup
, NULL
);
910 struct cleanup
*args_chain
;
913 ensure_not_tfind_mode ();
914 ensure_valid_thread ();
915 ensure_not_running ();
917 count_string
= strip_bg_char (count_string
, &async_exec
);
918 args_chain
= make_cleanup (xfree
, count_string
);
920 prepare_execution_command (¤t_target
, async_exec
);
922 count
= count_string
? parse_and_eval_long (count_string
) : 1;
924 /* Done with ARGS. */
925 do_cleanups (args_chain
);
927 if (!single_inst
|| skip_subroutines
) /* Leave si command alone. */
929 struct thread_info
*tp
= inferior_thread ();
931 if (in_thread_list (inferior_ptid
))
932 thread
= pid_to_thread_id (inferior_ptid
);
934 set_longjmp_breakpoint (tp
, get_frame_id (get_current_frame ()));
936 make_cleanup (delete_longjmp_breakpoint_cleanup
, &thread
);
939 /* Do only one step for now, before returning control to the event
940 loop. Let the continuation figure out how many other steps we
941 need to do, and handle them one at the time, through
943 step_once (skip_subroutines
, single_inst
, count
, thread
);
945 /* We are running, and the continuation is installed. It will
946 disable the longjmp breakpoint as appropriate. */
947 discard_cleanups (cleanups
);
950 struct step_1_continuation_args
953 int skip_subroutines
;
958 /* Called after we are done with one step operation, to check whether
959 we need to step again, before we print the prompt and return control
960 to the user. If count is > 1, we will need to do one more call to
961 proceed(), via step_once(). Basically it is like step_once and
962 step_1_continuation are co-recursive. */
965 step_1_continuation (void *args
, int err
)
967 struct step_1_continuation_args
*a
= args
;
969 if (target_has_execution
)
971 struct thread_info
*tp
;
973 tp
= inferior_thread ();
975 && tp
->step_multi
&& tp
->control
.stop_step
)
977 /* There are more steps to make, and we did stop due to
978 ending a stepping range. Do another step. */
979 step_once (a
->skip_subroutines
, a
->single_inst
,
980 a
->count
- 1, a
->thread
);
986 /* We either hit an error, or stopped for some reason that is
987 not stepping, or there are no further steps to make.
989 if (!a
->single_inst
|| a
->skip_subroutines
)
990 delete_longjmp_breakpoint (a
->thread
);
993 /* Do just one step operation. This is useful to implement the 'step
994 n' kind of commands. In case of asynchronous targets, we will have
995 to set up a continuation to be done after the target stops (after
996 this one step). For synch targets, the caller handles further
1000 step_once (int skip_subroutines
, int single_inst
, int count
, int thread
)
1002 struct frame_info
*frame
= get_current_frame ();
1006 struct step_1_continuation_args
*args
;
1007 /* Don't assume THREAD is a valid thread id. It is set to -1 if
1008 the longjmp breakpoint was not required. Use the
1009 INFERIOR_PTID thread instead, which is the same thread when
1011 struct thread_info
*tp
= inferior_thread ();
1013 clear_proceed_status (1);
1020 /* Step at an inlined function behaves like "down". */
1021 if (!skip_subroutines
1022 && inline_skipped_frames (inferior_ptid
))
1026 /* Pretend that we've ran. */
1027 resume_ptid
= user_visible_resume_ptid (1);
1028 set_running (resume_ptid
, 1);
1030 step_into_inline_frame (inferior_ptid
);
1032 step_once (skip_subroutines
, single_inst
, count
- 1, thread
);
1035 /* Pretend that we've stopped. */
1038 if (target_can_async_p ())
1039 inferior_event_handler (INF_EXEC_COMPLETE
, NULL
);
1044 pc
= get_frame_pc (frame
);
1045 find_pc_line_pc_range (pc
,
1046 &tp
->control
.step_range_start
,
1047 &tp
->control
.step_range_end
);
1049 tp
->control
.may_range_step
= 1;
1051 /* If we have no line info, switch to stepi mode. */
1052 if (tp
->control
.step_range_end
== 0 && step_stop_if_no_debug
)
1054 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1055 tp
->control
.may_range_step
= 0;
1057 else if (tp
->control
.step_range_end
== 0)
1061 if (find_pc_partial_function (pc
, &name
,
1062 &tp
->control
.step_range_start
,
1063 &tp
->control
.step_range_end
) == 0)
1064 error (_("Cannot find bounds of current function"));
1066 target_terminal_ours ();
1067 printf_filtered (_("Single stepping until exit from function %s,"
1068 "\nwhich has no line number information.\n"),
1074 /* Say we are stepping, but stop after one insn whatever it does. */
1075 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1076 if (!skip_subroutines
)
1078 Don't step over function calls, not even to functions lacking
1080 tp
->control
.step_over_calls
= STEP_OVER_NONE
;
1083 if (skip_subroutines
)
1084 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1086 tp
->step_multi
= (count
> 1);
1087 tp
->control
.stepping_command
= 1;
1088 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
);
1090 /* Register a continuation to do any additional steps. */
1091 args
= XNEW (struct step_1_continuation_args
);
1092 args
= xmalloc (sizeof (*args
));
1093 args
->skip_subroutines
= skip_subroutines
;
1094 args
->single_inst
= single_inst
;
1095 args
->count
= count
;
1096 args
->thread
= thread
;
1098 add_intermediate_continuation (tp
, step_1_continuation
, args
, xfree
);
1103 /* Continue program at specified address. */
1106 jump_command (char *arg
, int from_tty
)
1108 struct gdbarch
*gdbarch
= get_current_arch ();
1110 struct symtabs_and_lines sals
;
1111 struct symtab_and_line sal
;
1115 struct cleanup
*args_chain
;
1118 ensure_not_tfind_mode ();
1119 ensure_valid_thread ();
1120 ensure_not_running ();
1122 /* Find out whether we must run in the background. */
1123 arg
= strip_bg_char (arg
, &async_exec
);
1124 args_chain
= make_cleanup (xfree
, arg
);
1126 prepare_execution_command (¤t_target
, async_exec
);
1129 error_no_arg (_("starting address"));
1131 sals
= decode_line_with_last_displayed (arg
, DECODE_LINE_FUNFIRSTLINE
);
1132 if (sals
.nelts
!= 1)
1134 error (_("Unreasonable jump request"));
1140 /* Done with ARGS. */
1141 do_cleanups (args_chain
);
1143 if (sal
.symtab
== 0 && sal
.pc
== 0)
1144 error (_("No source file has been specified."));
1146 resolve_sal_pc (&sal
); /* May error out. */
1148 /* See if we are trying to jump to another function. */
1149 fn
= get_frame_function (get_current_frame ());
1150 sfn
= find_pc_function (sal
.pc
);
1151 if (fn
!= NULL
&& sfn
!= fn
)
1153 if (!query (_("Line %d is not in `%s'. Jump anyway? "), sal
.line
,
1154 SYMBOL_PRINT_NAME (fn
)))
1156 error (_("Not confirmed."));
1163 struct obj_section
*section
;
1165 fixup_symbol_section (sfn
, 0);
1166 section
= SYMBOL_OBJ_SECTION (symbol_objfile (sfn
), sfn
);
1167 if (section_is_overlay (section
)
1168 && !section_is_mapped (section
))
1170 if (!query (_("WARNING!!! Destination is in "
1171 "unmapped overlay! Jump anyway? ")))
1173 error (_("Not confirmed."));
1183 printf_filtered (_("Continuing at "));
1184 fputs_filtered (paddress (gdbarch
, addr
), gdb_stdout
);
1185 printf_filtered (".\n");
1188 clear_proceed_status (0);
1189 proceed (addr
, GDB_SIGNAL_0
);
1192 /* Continue program giving it specified signal. */
1195 signal_command (char *signum_exp
, int from_tty
)
1197 enum gdb_signal oursig
;
1199 struct cleanup
*args_chain
;
1201 dont_repeat (); /* Too dangerous. */
1203 ensure_not_tfind_mode ();
1204 ensure_valid_thread ();
1205 ensure_not_running ();
1207 /* Find out whether we must run in the background. */
1208 signum_exp
= strip_bg_char (signum_exp
, &async_exec
);
1209 args_chain
= make_cleanup (xfree
, signum_exp
);
1211 prepare_execution_command (¤t_target
, async_exec
);
1214 error_no_arg (_("signal number"));
1216 /* It would be even slicker to make signal names be valid expressions,
1217 (the type could be "enum $signal" or some such), then the user could
1218 assign them to convenience variables. */
1219 oursig
= gdb_signal_from_name (signum_exp
);
1221 if (oursig
== GDB_SIGNAL_UNKNOWN
)
1223 /* No, try numeric. */
1224 int num
= parse_and_eval_long (signum_exp
);
1227 oursig
= GDB_SIGNAL_0
;
1229 oursig
= gdb_signal_from_command (num
);
1232 do_cleanups (args_chain
);
1234 /* Look for threads other than the current that this command ends up
1235 resuming too (due to schedlock off), and warn if they'll get a
1236 signal delivered. "signal 0" is used to suppress a previous
1237 signal, but if the current thread is no longer the one that got
1238 the signal, then the user is potentially suppressing the signal
1239 of the wrong thread. */
1242 struct thread_info
*tp
;
1244 int must_confirm
= 0;
1246 /* This indicates what will be resumed. Either a single thread,
1247 a whole process, or all threads of all processes. */
1248 resume_ptid
= user_visible_resume_ptid (0);
1250 ALL_NON_EXITED_THREADS (tp
)
1252 if (ptid_equal (tp
->ptid
, inferior_ptid
))
1254 if (!ptid_match (tp
->ptid
, resume_ptid
))
1257 if (tp
->suspend
.stop_signal
!= GDB_SIGNAL_0
1258 && signal_pass_state (tp
->suspend
.stop_signal
))
1261 printf_unfiltered (_("Note:\n"));
1262 printf_unfiltered (_(" Thread %d previously stopped with signal %s, %s.\n"),
1264 gdb_signal_to_name (tp
->suspend
.stop_signal
),
1265 gdb_signal_to_string (tp
->suspend
.stop_signal
));
1271 && !query (_("Continuing thread %d (the current thread) with specified signal will\n"
1272 "still deliver the signals noted above to their respective threads.\n"
1273 "Continue anyway? "),
1274 inferior_thread ()->num
))
1275 error (_("Not confirmed."));
1280 if (oursig
== GDB_SIGNAL_0
)
1281 printf_filtered (_("Continuing with no signal.\n"));
1283 printf_filtered (_("Continuing with signal %s.\n"),
1284 gdb_signal_to_name (oursig
));
1287 clear_proceed_status (0);
1288 proceed ((CORE_ADDR
) -1, oursig
);
1291 /* Queue a signal to be delivered to the current thread. */
1294 queue_signal_command (char *signum_exp
, int from_tty
)
1296 enum gdb_signal oursig
;
1297 struct thread_info
*tp
;
1300 ensure_not_tfind_mode ();
1301 ensure_valid_thread ();
1302 ensure_not_running ();
1304 if (signum_exp
== NULL
)
1305 error_no_arg (_("signal number"));
1307 /* It would be even slicker to make signal names be valid expressions,
1308 (the type could be "enum $signal" or some such), then the user could
1309 assign them to convenience variables. */
1310 oursig
= gdb_signal_from_name (signum_exp
);
1312 if (oursig
== GDB_SIGNAL_UNKNOWN
)
1314 /* No, try numeric. */
1315 int num
= parse_and_eval_long (signum_exp
);
1318 oursig
= GDB_SIGNAL_0
;
1320 oursig
= gdb_signal_from_command (num
);
1323 if (oursig
!= GDB_SIGNAL_0
1324 && !signal_pass_state (oursig
))
1325 error (_("Signal handling set to not pass this signal to the program."));
1327 tp
= inferior_thread ();
1328 tp
->suspend
.stop_signal
= oursig
;
1331 /* Continuation args to be passed to the "until" command
1333 struct until_next_continuation_args
1335 /* The thread that was current when the command was executed. */
1339 /* A continuation callback for until_next_command. */
1342 until_next_continuation (void *arg
, int err
)
1344 struct until_next_continuation_args
*a
= arg
;
1346 delete_longjmp_breakpoint (a
->thread
);
1349 /* Proceed until we reach a different source line with pc greater than
1350 our current one or exit the function. We skip calls in both cases.
1352 Note that eventually this command should probably be changed so
1353 that only source lines are printed out when we hit the breakpoint
1354 we set. This may involve changes to wait_for_inferior and the
1355 proceed status code. */
1358 until_next_command (int from_tty
)
1360 struct frame_info
*frame
;
1362 struct symbol
*func
;
1363 struct symtab_and_line sal
;
1364 struct thread_info
*tp
= inferior_thread ();
1365 int thread
= tp
->num
;
1366 struct cleanup
*old_chain
;
1368 clear_proceed_status (0);
1371 frame
= get_current_frame ();
1373 /* Step until either exited from this function or greater
1374 than the current line (if in symbolic section) or pc (if
1377 pc
= get_frame_pc (frame
);
1378 func
= find_pc_function (pc
);
1382 struct bound_minimal_symbol msymbol
= lookup_minimal_symbol_by_pc (pc
);
1384 if (msymbol
.minsym
== NULL
)
1385 error (_("Execution is not within a known function."));
1387 tp
->control
.step_range_start
= BMSYMBOL_VALUE_ADDRESS (msymbol
);
1388 /* The upper-bound of step_range is exclusive. In order to make PC
1389 within the range, set the step_range_end with PC + 1. */
1390 tp
->control
.step_range_end
= pc
+ 1;
1394 sal
= find_pc_line (pc
, 0);
1396 tp
->control
.step_range_start
= BLOCK_START (SYMBOL_BLOCK_VALUE (func
));
1397 tp
->control
.step_range_end
= sal
.end
;
1399 tp
->control
.may_range_step
= 1;
1401 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1403 tp
->step_multi
= 0; /* Only one call to proceed */
1405 set_longjmp_breakpoint (tp
, get_frame_id (frame
));
1406 old_chain
= make_cleanup (delete_longjmp_breakpoint_cleanup
, &thread
);
1408 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
);
1410 if (is_running (inferior_ptid
))
1412 struct until_next_continuation_args
*cont_args
;
1414 discard_cleanups (old_chain
);
1415 cont_args
= XNEW (struct until_next_continuation_args
);
1416 cont_args
->thread
= inferior_thread ()->num
;
1418 add_continuation (tp
, until_next_continuation
, cont_args
, xfree
);
1421 do_cleanups (old_chain
);
1425 until_command (char *arg
, int from_tty
)
1428 struct cleanup
*args_chain
;
1431 ensure_not_tfind_mode ();
1432 ensure_valid_thread ();
1433 ensure_not_running ();
1435 /* Find out whether we must run in the background. */
1436 arg
= strip_bg_char (arg
, &async_exec
);
1437 args_chain
= make_cleanup (xfree
, arg
);
1439 prepare_execution_command (¤t_target
, async_exec
);
1442 until_break_command (arg
, from_tty
, 0);
1444 until_next_command (from_tty
);
1446 /* Done with ARGS. */
1447 do_cleanups (args_chain
);
1451 advance_command (char *arg
, int from_tty
)
1454 struct cleanup
*args_chain
;
1457 ensure_not_tfind_mode ();
1458 ensure_valid_thread ();
1459 ensure_not_running ();
1462 error_no_arg (_("a location"));
1464 /* Find out whether we must run in the background. */
1465 arg
= strip_bg_char (arg
, &async_exec
);
1466 args_chain
= make_cleanup (xfree
, arg
);
1468 prepare_execution_command (¤t_target
, async_exec
);
1470 until_break_command (arg
, from_tty
, 1);
1472 /* Done with ARGS. */
1473 do_cleanups (args_chain
);
1476 /* Return the value of the result of a function at the end of a 'finish'
1477 command/BP. DTOR_DATA (if not NULL) can represent inferior registers
1478 right after an inferior call has finished. */
1481 get_return_value (struct value
*function
, struct type
*value_type
,
1482 struct dummy_frame_context_saver
*ctx_saver
)
1484 struct regcache
*stop_regs
= NULL
;
1485 struct gdbarch
*gdbarch
;
1486 struct value
*value
;
1487 struct cleanup
*cleanup
= make_cleanup (null_cleanup
, NULL
);
1489 /* If registers were not saved, use the current registers. */
1490 if (ctx_saver
!= NULL
)
1491 stop_regs
= dummy_frame_context_saver_get_regs (ctx_saver
);
1494 stop_regs
= regcache_dup (get_current_regcache ());
1495 make_cleanup_regcache_xfree (stop_regs
);
1498 gdbarch
= get_regcache_arch (stop_regs
);
1500 value_type
= check_typedef (value_type
);
1501 gdb_assert (TYPE_CODE (value_type
) != TYPE_CODE_VOID
);
1503 /* FIXME: 2003-09-27: When returning from a nested inferior function
1504 call, it's possible (with no help from the architecture vector)
1505 to locate and return/print a "struct return" value. This is just
1506 a more complicated case of what is already being done in the
1507 inferior function call code. In fact, when inferior function
1508 calls are made async, this will likely be made the norm. */
1510 switch (gdbarch_return_value (gdbarch
, function
, value_type
,
1513 case RETURN_VALUE_REGISTER_CONVENTION
:
1514 case RETURN_VALUE_ABI_RETURNS_ADDRESS
:
1515 case RETURN_VALUE_ABI_PRESERVES_ADDRESS
:
1516 value
= allocate_value (value_type
);
1517 gdbarch_return_value (gdbarch
, function
, value_type
, stop_regs
,
1518 value_contents_raw (value
), NULL
);
1520 case RETURN_VALUE_STRUCT_CONVENTION
:
1524 internal_error (__FILE__
, __LINE__
, _("bad switch"));
1527 do_cleanups (cleanup
);
1532 /* Print the result of a function at the end of a 'finish' command.
1533 DTOR_DATA (if not NULL) can represent inferior registers right after
1534 an inferior call has finished. */
1537 print_return_value (struct value
*function
, struct type
*value_type
,
1538 struct dummy_frame_context_saver
*ctx_saver
)
1540 struct value
*value
= get_return_value (function
, value_type
, ctx_saver
);
1541 struct ui_out
*uiout
= current_uiout
;
1545 struct value_print_options opts
;
1546 struct ui_file
*stb
;
1547 struct cleanup
*old_chain
;
1550 stb
= mem_fileopen ();
1551 old_chain
= make_cleanup_ui_file_delete (stb
);
1552 ui_out_text (uiout
, "Value returned is ");
1553 ui_out_field_fmt (uiout
, "gdb-result-var", "$%d",
1554 record_latest_value (value
));
1555 ui_out_text (uiout
, " = ");
1556 get_no_prettyformat_print_options (&opts
);
1557 value_print (value
, stb
, &opts
);
1558 ui_out_field_stream (uiout
, "return-value", stb
);
1559 ui_out_text (uiout
, "\n");
1560 do_cleanups (old_chain
);
1564 struct cleanup
*oldchain
;
1567 type_name
= type_to_string (value_type
);
1568 oldchain
= make_cleanup (xfree
, type_name
);
1569 ui_out_text (uiout
, "Value returned has type: ");
1570 ui_out_field_string (uiout
, "return-type", type_name
);
1571 ui_out_text (uiout
, ".");
1572 ui_out_text (uiout
, " Cannot determine contents\n");
1573 do_cleanups (oldchain
);
1577 /* Stuff that needs to be done by the finish command after the target
1578 has stopped. In asynchronous mode, we wait for the target to stop
1579 in the call to poll or select in the event loop, so it is
1580 impossible to do all the stuff as part of the finish_command
1581 function itself. The only chance we have to complete this command
1582 is in fetch_inferior_event, which is called by the event loop as
1583 soon as it detects that the target has stopped. */
1585 struct finish_command_continuation_args
1587 /* The thread that as current when the command was executed. */
1589 struct breakpoint
*breakpoint
;
1590 struct symbol
*function
;
1592 /* Inferior registers stored right before dummy_frame has been freed
1593 after an inferior call. It can be NULL if no inferior call was
1594 involved, GDB will then use current inferior registers. */
1595 struct dummy_frame_context_saver
*ctx_saver
;
1599 finish_command_continuation (void *arg
, int err
)
1601 struct finish_command_continuation_args
*a
= arg
;
1605 struct thread_info
*tp
= NULL
;
1608 if (!ptid_equal (inferior_ptid
, null_ptid
)
1609 && target_has_execution
1610 && is_stopped (inferior_ptid
))
1612 tp
= inferior_thread ();
1613 bs
= tp
->control
.stop_bpstat
;
1616 if (bpstat_find_breakpoint (bs
, a
->breakpoint
) != NULL
1617 && a
->function
!= NULL
)
1619 struct type
*value_type
;
1621 value_type
= TYPE_TARGET_TYPE (SYMBOL_TYPE (a
->function
));
1623 internal_error (__FILE__
, __LINE__
,
1624 _("finish_command: function has no target type"));
1626 if (TYPE_CODE (value_type
) != TYPE_CODE_VOID
)
1630 func
= read_var_value (a
->function
, NULL
, get_current_frame ());
1633 /* print_return_value can throw an exception in some
1634 circumstances. We need to catch this so that we still
1635 delete the breakpoint. */
1636 print_return_value (func
, value_type
, a
->ctx_saver
);
1638 CATCH (ex
, RETURN_MASK_ALL
)
1640 exception_print (gdb_stdout
, ex
);
1646 /* We suppress normal call of normal_stop observer and do it
1647 here so that the *stopped notification includes the return
1649 if (bs
!= NULL
&& tp
->control
.proceed_to_finish
)
1650 observer_notify_normal_stop (bs
, 1 /* print frame */);
1653 delete_breakpoint (a
->breakpoint
);
1654 delete_longjmp_breakpoint (a
->thread
);
1658 finish_command_continuation_free_arg (void *arg
)
1660 struct finish_command_continuation_args
*cargs
= arg
;
1662 if (cargs
->ctx_saver
!= NULL
)
1663 dummy_frame_context_saver_drop (cargs
->ctx_saver
);
1667 /* finish_backward -- helper function for finish_command. */
1670 finish_backward (struct symbol
*function
)
1672 struct symtab_and_line sal
;
1673 struct thread_info
*tp
= inferior_thread ();
1675 CORE_ADDR func_addr
;
1677 pc
= get_frame_pc (get_current_frame ());
1679 if (find_pc_partial_function (pc
, NULL
, &func_addr
, NULL
) == 0)
1680 error (_("Cannot find bounds of current function"));
1682 sal
= find_pc_line (func_addr
, 0);
1684 tp
->control
.proceed_to_finish
= 1;
1685 /* Special case: if we're sitting at the function entry point,
1686 then all we need to do is take a reverse singlestep. We
1687 don't need to set a breakpoint, and indeed it would do us
1690 Note that this can only happen at frame #0, since there's
1691 no way that a function up the stack can have a return address
1692 that's equal to its entry point. */
1696 struct frame_info
*frame
= get_selected_frame (NULL
);
1697 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
1698 struct symtab_and_line sr_sal
;
1700 /* Set a step-resume at the function's entry point. Once that's
1701 hit, we'll do one more step backwards. */
1704 sr_sal
.pspace
= get_frame_program_space (frame
);
1705 insert_step_resume_breakpoint_at_sal (gdbarch
,
1706 sr_sal
, null_frame_id
);
1708 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
);
1712 /* We're almost there -- we just need to back up by one more
1714 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1715 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
);
1719 /* finish_forward -- helper function for finish_command. */
1722 finish_forward (struct symbol
*function
, struct frame_info
*frame
)
1724 struct frame_id frame_id
= get_frame_id (frame
);
1725 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
1726 struct symtab_and_line sal
;
1727 struct thread_info
*tp
= inferior_thread ();
1728 struct breakpoint
*breakpoint
;
1729 struct cleanup
*old_chain
= make_cleanup (null_cleanup
, NULL
);
1730 struct finish_command_continuation_args
*cargs
;
1731 int thread
= tp
->num
;
1732 struct dummy_frame_context_saver
*saver
= NULL
;
1734 sal
= find_pc_line (get_frame_pc (frame
), 0);
1735 sal
.pc
= get_frame_pc (frame
);
1737 if (get_frame_type (frame
) == DUMMY_FRAME
)
1739 saver
= dummy_frame_context_saver_setup (get_stack_frame_id (frame
),
1741 make_cleanup (dummy_frame_context_saver_cleanup
, saver
);
1744 breakpoint
= set_momentary_breakpoint (gdbarch
, sal
,
1745 get_stack_frame_id (frame
),
1748 /* set_momentary_breakpoint invalidates FRAME. */
1751 make_cleanup_delete_breakpoint (breakpoint
);
1753 set_longjmp_breakpoint (tp
, frame_id
);
1754 make_cleanup (delete_longjmp_breakpoint_cleanup
, &thread
);
1756 /* We want to print return value, please... */
1757 tp
->control
.proceed_to_finish
= 1;
1758 cargs
= XNEW (struct finish_command_continuation_args
);
1760 cargs
->thread
= thread
;
1761 cargs
->breakpoint
= breakpoint
;
1762 cargs
->function
= function
;
1763 cargs
->ctx_saver
= saver
;
1764 add_continuation (tp
, finish_command_continuation
, cargs
,
1765 finish_command_continuation_free_arg
);
1766 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
);
1768 discard_cleanups (old_chain
);
1771 /* "finish": Set a temporary breakpoint at the place the selected
1772 frame will return to, then continue. */
1775 finish_command (char *arg
, int from_tty
)
1777 struct frame_info
*frame
;
1778 struct symbol
*function
;
1780 struct cleanup
*args_chain
;
1783 ensure_not_tfind_mode ();
1784 ensure_valid_thread ();
1785 ensure_not_running ();
1787 /* Find out whether we must run in the background. */
1788 arg
= strip_bg_char (arg
, &async_exec
);
1789 args_chain
= make_cleanup (xfree
, arg
);
1791 prepare_execution_command (¤t_target
, async_exec
);
1794 error (_("The \"finish\" command does not take any arguments."));
1796 /* Done with ARGS. */
1797 do_cleanups (args_chain
);
1799 frame
= get_prev_frame (get_selected_frame (_("No selected frame.")));
1801 error (_("\"finish\" not meaningful in the outermost frame."));
1803 clear_proceed_status (0);
1805 /* Finishing from an inline frame is completely different. We don't
1806 try to show the "return value" - no way to locate it. So we do
1807 not need a completion. */
1808 if (get_frame_type (get_selected_frame (_("No selected frame.")))
1811 /* Claim we are stepping in the calling frame. An empty step
1812 range means that we will stop once we aren't in a function
1813 called by that frame. We don't use the magic "1" value for
1814 step_range_end, because then infrun will think this is nexti,
1815 and not step over the rest of this inlined function call. */
1816 struct thread_info
*tp
= inferior_thread ();
1817 struct symtab_and_line empty_sal
;
1819 init_sal (&empty_sal
);
1820 set_step_info (frame
, empty_sal
);
1821 tp
->control
.step_range_start
= get_frame_pc (frame
);
1822 tp
->control
.step_range_end
= tp
->control
.step_range_start
;
1823 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1825 /* Print info on the selected frame, including level number but not
1829 printf_filtered (_("Run till exit from "));
1830 print_stack_frame (get_selected_frame (NULL
), 1, LOCATION
, 0);
1833 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
);
1837 /* Ignore TAILCALL_FRAME type frames, they were executed already before
1838 entering THISFRAME. */
1839 while (get_frame_type (frame
) == TAILCALL_FRAME
)
1840 frame
= get_prev_frame (frame
);
1842 /* Find the function we will return from. */
1844 function
= find_pc_function (get_frame_pc (get_selected_frame (NULL
)));
1846 /* Print info on the selected frame, including level number but not
1850 if (execution_direction
== EXEC_REVERSE
)
1851 printf_filtered (_("Run back to call of "));
1854 if (function
!= NULL
&& TYPE_NO_RETURN (function
->type
)
1855 && !query (_("warning: Function %s does not return normally.\n"
1856 "Try to finish anyway? "),
1857 SYMBOL_PRINT_NAME (function
)))
1858 error (_("Not confirmed."));
1859 printf_filtered (_("Run till exit from "));
1862 print_stack_frame (get_selected_frame (NULL
), 1, LOCATION
, 0);
1865 if (execution_direction
== EXEC_REVERSE
)
1866 finish_backward (function
);
1868 finish_forward (function
, frame
);
1873 program_info (char *args
, int from_tty
)
1877 struct thread_info
*tp
;
1880 if (!target_has_execution
)
1882 printf_filtered (_("The program being debugged is not being run.\n"));
1887 ptid
= inferior_ptid
;
1890 struct target_waitstatus ws
;
1892 get_last_target_status (&ptid
, &ws
);
1895 if (ptid_equal (ptid
, null_ptid
) || is_exited (ptid
))
1896 error (_("Invalid selected thread."));
1897 else if (is_running (ptid
))
1898 error (_("Selected thread is running."));
1900 tp
= find_thread_ptid (ptid
);
1901 bs
= tp
->control
.stop_bpstat
;
1902 stat
= bpstat_num (&bs
, &num
);
1904 target_files_info ();
1905 printf_filtered (_("Program stopped at %s.\n"),
1906 paddress (target_gdbarch (), stop_pc
));
1907 if (tp
->control
.stop_step
)
1908 printf_filtered (_("It stopped after being stepped.\n"));
1911 /* There may be several breakpoints in the same place, so this
1912 isn't as strange as it seems. */
1917 printf_filtered (_("It stopped at a breakpoint "
1918 "that has since been deleted.\n"));
1921 printf_filtered (_("It stopped at breakpoint %d.\n"), num
);
1922 stat
= bpstat_num (&bs
, &num
);
1925 else if (tp
->suspend
.stop_signal
!= GDB_SIGNAL_0
)
1927 printf_filtered (_("It stopped with signal %s, %s.\n"),
1928 gdb_signal_to_name (tp
->suspend
.stop_signal
),
1929 gdb_signal_to_string (tp
->suspend
.stop_signal
));
1934 printf_filtered (_("Type \"info stack\" or \"info "
1935 "registers\" for more information.\n"));
1940 environment_info (char *var
, int from_tty
)
1944 char *val
= get_in_environ (current_inferior ()->environment
, var
);
1948 puts_filtered (var
);
1949 puts_filtered (" = ");
1950 puts_filtered (val
);
1951 puts_filtered ("\n");
1955 puts_filtered ("Environment variable \"");
1956 puts_filtered (var
);
1957 puts_filtered ("\" not defined.\n");
1962 char **vector
= environ_vector (current_inferior ()->environment
);
1966 puts_filtered (*vector
++);
1967 puts_filtered ("\n");
1973 set_environment_command (char *arg
, int from_tty
)
1975 char *p
, *val
, *var
;
1979 error_no_arg (_("environment variable and value"));
1981 /* Find seperation between variable name and value. */
1982 p
= (char *) strchr (arg
, '=');
1983 val
= (char *) strchr (arg
, ' ');
1985 if (p
!= 0 && val
!= 0)
1987 /* We have both a space and an equals. If the space is before the
1988 equals, walk forward over the spaces til we see a nonspace
1989 (possibly the equals). */
1994 /* Now if the = is after the char following the spaces,
1995 take the char following the spaces. */
1999 else if (val
!= 0 && p
== 0)
2003 error_no_arg (_("environment variable to set"));
2005 if (p
== 0 || p
[1] == 0)
2009 p
= arg
+ strlen (arg
); /* So that savestring below will work. */
2013 /* Not setting variable value to null. */
2015 while (*val
== ' ' || *val
== '\t')
2019 while (p
!= arg
&& (p
[-1] == ' ' || p
[-1] == '\t'))
2022 var
= savestring (arg
, p
- arg
);
2025 printf_filtered (_("Setting environment variable "
2026 "\"%s\" to null value.\n"),
2028 set_in_environ (current_inferior ()->environment
, var
, "");
2031 set_in_environ (current_inferior ()->environment
, var
, val
);
2036 unset_environment_command (char *var
, int from_tty
)
2040 /* If there is no argument, delete all environment variables.
2041 Ask for confirmation if reading from the terminal. */
2042 if (!from_tty
|| query (_("Delete all environment variables? ")))
2044 free_environ (current_inferior ()->environment
);
2045 current_inferior ()->environment
= make_environ ();
2049 unset_in_environ (current_inferior ()->environment
, var
);
2052 /* Handle the execution path (PATH variable). */
2054 static const char path_var_name
[] = "PATH";
2057 path_info (char *args
, int from_tty
)
2059 puts_filtered ("Executable and object file path: ");
2060 puts_filtered (get_in_environ (current_inferior ()->environment
,
2062 puts_filtered ("\n");
2065 /* Add zero or more directories to the front of the execution path. */
2068 path_command (char *dirname
, int from_tty
)
2074 env
= get_in_environ (current_inferior ()->environment
, path_var_name
);
2075 /* Can be null if path is not set. */
2078 exec_path
= xstrdup (env
);
2079 mod_path (dirname
, &exec_path
);
2080 set_in_environ (current_inferior ()->environment
, path_var_name
, exec_path
);
2083 path_info ((char *) NULL
, from_tty
);
2087 /* Print out the register NAME with value VAL, to FILE, in the default
2091 default_print_one_register_info (struct ui_file
*file
,
2095 struct type
*regtype
= value_type (val
);
2096 int print_raw_format
;
2098 fputs_filtered (name
, file
);
2099 print_spaces_filtered (15 - strlen (name
), file
);
2101 print_raw_format
= (value_entirely_available (val
)
2102 && !value_optimized_out (val
));
2104 /* If virtual format is floating, print it that way, and in raw
2106 if (TYPE_CODE (regtype
) == TYPE_CODE_FLT
2107 || TYPE_CODE (regtype
) == TYPE_CODE_DECFLOAT
)
2110 struct value_print_options opts
;
2111 const gdb_byte
*valaddr
= value_contents_for_printing (val
);
2112 enum bfd_endian byte_order
= gdbarch_byte_order (get_type_arch (regtype
));
2114 get_user_print_options (&opts
);
2118 value_contents_for_printing (val
),
2119 value_embedded_offset (val
), 0,
2120 file
, 0, val
, &opts
, current_language
);
2122 if (print_raw_format
)
2124 fprintf_filtered (file
, "\t(raw ");
2125 print_hex_chars (file
, valaddr
, TYPE_LENGTH (regtype
), byte_order
);
2126 fprintf_filtered (file
, ")");
2131 struct value_print_options opts
;
2133 /* Print the register in hex. */
2134 get_formatted_print_options (&opts
, 'x');
2137 value_contents_for_printing (val
),
2138 value_embedded_offset (val
), 0,
2139 file
, 0, val
, &opts
, current_language
);
2140 /* If not a vector register, print it also according to its
2142 if (print_raw_format
&& TYPE_VECTOR (regtype
) == 0)
2144 get_user_print_options (&opts
);
2146 fprintf_filtered (file
, "\t");
2148 value_contents_for_printing (val
),
2149 value_embedded_offset (val
), 0,
2150 file
, 0, val
, &opts
, current_language
);
2154 fprintf_filtered (file
, "\n");
2157 /* Print out the machine register regnum. If regnum is -1, print all
2158 registers (print_all == 1) or all non-float and non-vector
2159 registers (print_all == 0).
2161 For most machines, having all_registers_info() print the
2162 register(s) one per line is good enough. If a different format is
2163 required, (eg, for MIPS or Pyramid 90x, which both have lots of
2164 regs), or there is an existing convention for showing all the
2165 registers, define the architecture method PRINT_REGISTERS_INFO to
2166 provide that format. */
2169 default_print_registers_info (struct gdbarch
*gdbarch
,
2170 struct ui_file
*file
,
2171 struct frame_info
*frame
,
2172 int regnum
, int print_all
)
2175 const int numregs
= gdbarch_num_regs (gdbarch
)
2176 + gdbarch_num_pseudo_regs (gdbarch
);
2178 for (i
= 0; i
< numregs
; i
++)
2180 /* Decide between printing all regs, non-float / vector regs, or
2186 if (!gdbarch_register_reggroup_p (gdbarch
, i
, all_reggroup
))
2191 if (!gdbarch_register_reggroup_p (gdbarch
, i
, general_reggroup
))
2201 /* If the register name is empty, it is undefined for this
2202 processor, so don't display anything. */
2203 if (gdbarch_register_name (gdbarch
, i
) == NULL
2204 || *(gdbarch_register_name (gdbarch
, i
)) == '\0')
2207 default_print_one_register_info (file
,
2208 gdbarch_register_name (gdbarch
, i
),
2209 value_of_register (i
, frame
));
2214 registers_info (char *addr_exp
, int fpregs
)
2216 struct frame_info
*frame
;
2217 struct gdbarch
*gdbarch
;
2219 if (!target_has_registers
)
2220 error (_("The program has no registers now."));
2221 frame
= get_selected_frame (NULL
);
2222 gdbarch
= get_frame_arch (frame
);
2226 gdbarch_print_registers_info (gdbarch
, gdb_stdout
,
2231 while (*addr_exp
!= '\0')
2236 /* Skip leading white space. */
2237 addr_exp
= skip_spaces (addr_exp
);
2239 /* Discard any leading ``$''. Check that there is something
2240 resembling a register following it. */
2241 if (addr_exp
[0] == '$')
2243 if (isspace ((*addr_exp
)) || (*addr_exp
) == '\0')
2244 error (_("Missing register name"));
2246 /* Find the start/end of this register name/num/group. */
2248 while ((*addr_exp
) != '\0' && !isspace ((*addr_exp
)))
2252 /* Figure out what we've found and display it. */
2254 /* A register name? */
2256 int regnum
= user_reg_map_name_to_regnum (gdbarch
, start
, end
- start
);
2260 /* User registers lie completely outside of the range of
2261 normal registers. Catch them early so that the target
2263 if (regnum
>= gdbarch_num_regs (gdbarch
)
2264 + gdbarch_num_pseudo_regs (gdbarch
))
2266 struct value
*regval
= value_of_user_reg (regnum
, frame
);
2267 const char *regname
= user_reg_map_regnum_to_name (gdbarch
,
2270 /* Print in the same fashion
2271 gdbarch_print_registers_info's default
2272 implementation prints. */
2273 default_print_one_register_info (gdb_stdout
,
2278 gdbarch_print_registers_info (gdbarch
, gdb_stdout
,
2279 frame
, regnum
, fpregs
);
2284 /* A register group? */
2286 struct reggroup
*group
;
2288 for (group
= reggroup_next (gdbarch
, NULL
);
2290 group
= reggroup_next (gdbarch
, group
))
2292 /* Don't bother with a length check. Should the user
2293 enter a short register group name, go with the first
2294 group that matches. */
2295 if (strncmp (start
, reggroup_name (group
), end
- start
) == 0)
2303 regnum
< gdbarch_num_regs (gdbarch
)
2304 + gdbarch_num_pseudo_regs (gdbarch
);
2307 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, group
))
2308 gdbarch_print_registers_info (gdbarch
,
2316 /* Nothing matched. */
2317 error (_("Invalid register `%.*s'"), (int) (end
- start
), start
);
2322 all_registers_info (char *addr_exp
, int from_tty
)
2324 registers_info (addr_exp
, 1);
2328 nofp_registers_info (char *addr_exp
, int from_tty
)
2330 registers_info (addr_exp
, 0);
2334 print_vector_info (struct ui_file
*file
,
2335 struct frame_info
*frame
, const char *args
)
2337 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
2339 if (gdbarch_print_vector_info_p (gdbarch
))
2340 gdbarch_print_vector_info (gdbarch
, file
, frame
, args
);
2344 int printed_something
= 0;
2347 regnum
< gdbarch_num_regs (gdbarch
)
2348 + gdbarch_num_pseudo_regs (gdbarch
);
2351 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, vector_reggroup
))
2353 printed_something
= 1;
2354 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
2357 if (!printed_something
)
2358 fprintf_filtered (file
, "No vector information\n");
2363 vector_info (char *args
, int from_tty
)
2365 if (!target_has_registers
)
2366 error (_("The program has no registers now."));
2368 print_vector_info (gdb_stdout
, get_selected_frame (NULL
), args
);
2371 /* Kill the inferior process. Make us have no inferior. */
2374 kill_command (char *arg
, int from_tty
)
2376 /* FIXME: This should not really be inferior_ptid (or target_has_execution).
2377 It should be a distinct flag that indicates that a target is active, cuz
2378 some targets don't have processes! */
2380 if (ptid_equal (inferior_ptid
, null_ptid
))
2381 error (_("The program is not being run."));
2382 if (!query (_("Kill the program being debugged? ")))
2383 error (_("Not confirmed."));
2386 /* If we still have other inferiors to debug, then don't mess with
2387 with their threads. */
2388 if (!have_inferiors ())
2390 init_thread_list (); /* Destroy thread info. */
2392 /* Killing off the inferior can leave us with a core file. If
2393 so, print the state we are left in. */
2394 if (target_has_stack
)
2396 printf_filtered (_("In %s,\n"), target_longname
);
2397 print_stack_frame (get_selected_frame (NULL
), 1, SRC_AND_LOC
, 1);
2400 bfd_cache_close_all ();
2403 /* Used in `attach&' command. ARG is a point to an integer
2404 representing a process id. Proceed threads of this process iff
2405 they stopped due to debugger request, and when they did, they
2406 reported a clean stop (GDB_SIGNAL_0). Do not proceed threads
2407 that have been explicitly been told to stop. */
2410 proceed_after_attach_callback (struct thread_info
*thread
,
2413 int pid
= * (int *) arg
;
2415 if (ptid_get_pid (thread
->ptid
) == pid
2416 && !is_exited (thread
->ptid
)
2417 && !is_executing (thread
->ptid
)
2418 && !thread
->stop_requested
2419 && thread
->suspend
.stop_signal
== GDB_SIGNAL_0
)
2421 switch_to_thread (thread
->ptid
);
2422 clear_proceed_status (0);
2423 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
);
2430 proceed_after_attach (int pid
)
2432 /* Don't error out if the current thread is running, because
2433 there may be other stopped threads. */
2434 struct cleanup
*old_chain
;
2436 /* Backup current thread and selected frame. */
2437 old_chain
= make_cleanup_restore_current_thread ();
2439 iterate_over_threads (proceed_after_attach_callback
, &pid
);
2441 /* Restore selected ptid. */
2442 do_cleanups (old_chain
);
2445 /* attach_command --
2446 takes a program started up outside of gdb and ``attaches'' to it.
2447 This stops it cold in its tracks and allows us to start debugging it.
2448 and wait for the trace-trap that results from attaching. */
2451 attach_command_post_wait (char *args
, int from_tty
, int async_exec
)
2453 struct inferior
*inferior
;
2455 inferior
= current_inferior ();
2456 inferior
->control
.stop_soon
= NO_STOP_QUIETLY
;
2458 /* If no exec file is yet known, try to determine it from the
2460 if (get_exec_file (0) == NULL
)
2461 exec_file_locate_attach (ptid_get_pid (inferior_ptid
), from_tty
);
2464 reopen_exec_file ();
2468 /* Take any necessary post-attaching actions for this platform. */
2469 target_post_attach (ptid_get_pid (inferior_ptid
));
2471 post_create_inferior (¤t_target
, from_tty
);
2475 /* The user requested an `attach&', so be sure to leave threads
2476 that didn't get a signal running. */
2478 /* Immediatelly resume all suspended threads of this inferior,
2479 and this inferior only. This should have no effect on
2480 already running threads. If a thread has been stopped with a
2481 signal, leave it be. */
2483 proceed_after_attach (inferior
->pid
);
2486 if (inferior_thread ()->suspend
.stop_signal
== GDB_SIGNAL_0
)
2488 clear_proceed_status (0);
2489 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
);
2495 /* The user requested a plain `attach', so be sure to leave
2496 the inferior stopped. */
2498 async_enable_stdin ();
2500 /* At least the current thread is already stopped. */
2502 /* In all-stop, by definition, all threads have to be already
2503 stopped at this point. In non-stop, however, although the
2504 selected thread is stopped, others may still be executing.
2505 Be sure to explicitly stop all threads of the process. This
2506 should have no effect on already stopped threads. */
2507 if (target_is_non_stop_p ())
2508 target_stop (pid_to_ptid (inferior
->pid
));
2510 /* Tell the user/frontend where we're stopped. */
2512 if (deprecated_attach_hook
)
2513 deprecated_attach_hook ();
2517 struct attach_command_continuation_args
2525 attach_command_continuation (void *args
, int err
)
2527 struct attach_command_continuation_args
*a
= args
;
2532 attach_command_post_wait (a
->args
, a
->from_tty
, a
->async_exec
);
2536 attach_command_continuation_free_args (void *args
)
2538 struct attach_command_continuation_args
*a
= args
;
2545 attach_command (char *args
, int from_tty
)
2548 struct cleanup
*args_chain
;
2549 struct target_ops
*attach_target
;
2551 dont_repeat (); /* Not for the faint of heart */
2553 if (gdbarch_has_global_solist (target_gdbarch ()))
2554 /* Don't complain if all processes share the same symbol
2557 else if (target_has_execution
)
2559 if (query (_("A program is being debugged already. Kill it? ")))
2562 error (_("Not killed."));
2565 /* Clean up any leftovers from other runs. Some other things from
2566 this function should probably be moved into target_pre_inferior. */
2567 target_pre_inferior (from_tty
);
2569 args
= strip_bg_char (args
, &async_exec
);
2570 args_chain
= make_cleanup (xfree
, args
);
2572 attach_target
= find_attach_target ();
2574 prepare_execution_command (attach_target
, async_exec
);
2576 if (non_stop
&& !attach_target
->to_supports_non_stop (attach_target
))
2577 error (_("Cannot attach to this target in non-stop mode"));
2579 attach_target
->to_attach (attach_target
, args
, from_tty
);
2580 /* to_attach should push the target, so after this point we
2581 shouldn't refer to attach_target again. */
2582 attach_target
= NULL
;
2584 /* Set up the "saved terminal modes" of the inferior
2585 based on what modes we are starting it with. */
2586 target_terminal_init ();
2588 /* Install inferior's terminal modes. This may look like a no-op,
2589 as we've just saved them above, however, this does more than
2590 restore terminal settings:
2592 - installs a SIGINT handler that forwards SIGINT to the inferior.
2593 Otherwise a Ctrl-C pressed just while waiting for the initial
2594 stop would end up as a spurious Quit.
2596 - removes stdin from the event loop, which we need if attaching
2597 in the foreground, otherwise on targets that report an initial
2598 stop on attach (which are most) we'd process input/commands
2599 while we're in the event loop waiting for that stop. That is,
2600 before the attach continuation runs and the command is really
2602 target_terminal_inferior ();
2604 /* Set up execution context to know that we should return from
2605 wait_for_inferior as soon as the target reports a stop. */
2606 init_wait_for_inferior ();
2607 clear_proceed_status (0);
2609 if (target_is_non_stop_p ())
2611 /* If we find that the current thread isn't stopped, explicitly
2612 do so now, because we're going to install breakpoints and
2616 /* The user requested an `attach&'; stop just one thread. */
2617 target_stop (inferior_ptid
);
2619 /* The user requested an `attach', so stop all threads of this
2621 target_stop (pid_to_ptid (ptid_get_pid (inferior_ptid
)));
2624 /* Some system don't generate traps when attaching to inferior.
2625 E.g. Mach 3 or GNU hurd. */
2626 if (!target_attach_no_wait
)
2628 struct attach_command_continuation_args
*a
;
2629 struct inferior
*inferior
= current_inferior ();
2631 /* Careful here. See comments in inferior.h. Basically some
2632 OSes don't ignore SIGSTOPs on continue requests anymore. We
2633 need a way for handle_inferior_event to reset the stop_signal
2634 variable after an attach, and this is what
2635 STOP_QUIETLY_NO_SIGSTOP is for. */
2636 inferior
->control
.stop_soon
= STOP_QUIETLY_NO_SIGSTOP
;
2638 /* sync_execution mode. Wait for stop. */
2639 a
= XNEW (struct attach_command_continuation_args
);
2640 a
->args
= xstrdup (args
);
2641 a
->from_tty
= from_tty
;
2642 a
->async_exec
= async_exec
;
2643 add_inferior_continuation (attach_command_continuation
, a
,
2644 attach_command_continuation_free_args
);
2645 /* Done with ARGS. */
2646 do_cleanups (args_chain
);
2648 if (!target_is_async_p ())
2649 mark_infrun_async_event_handler ();
2653 /* Done with ARGS. */
2654 do_cleanups (args_chain
);
2656 attach_command_post_wait (args
, from_tty
, async_exec
);
2659 /* We had just found out that the target was already attached to an
2660 inferior. PTID points at a thread of this new inferior, that is
2661 the most likely to be stopped right now, but not necessarily so.
2662 The new inferior is assumed to be already added to the inferior
2663 list at this point. If LEAVE_RUNNING, then leave the threads of
2664 this inferior running, except those we've explicitly seen reported
2668 notice_new_inferior (ptid_t ptid
, int leave_running
, int from_tty
)
2670 struct cleanup
* old_chain
;
2673 old_chain
= make_cleanup (null_cleanup
, NULL
);
2675 /* If in non-stop, leave threads as running as they were. If
2676 they're stopped for some reason other than us telling it to, the
2677 target reports a signal != GDB_SIGNAL_0. We don't try to
2678 resume threads with such a stop signal. */
2679 async_exec
= non_stop
;
2681 if (!ptid_equal (inferior_ptid
, null_ptid
))
2682 make_cleanup_restore_current_thread ();
2684 switch_to_thread (ptid
);
2686 /* When we "notice" a new inferior we need to do all the things we
2687 would normally do if we had just attached to it. */
2689 if (is_executing (inferior_ptid
))
2691 struct attach_command_continuation_args
*a
;
2692 struct inferior
*inferior
= current_inferior ();
2694 /* We're going to install breakpoints, and poke at memory,
2695 ensure that the inferior is stopped for a moment while we do
2697 target_stop (inferior_ptid
);
2699 inferior
->control
.stop_soon
= STOP_QUIETLY_REMOTE
;
2701 /* Wait for stop before proceeding. */
2702 a
= XNEW (struct attach_command_continuation_args
);
2703 a
->args
= xstrdup ("");
2704 a
->from_tty
= from_tty
;
2705 a
->async_exec
= async_exec
;
2706 add_inferior_continuation (attach_command_continuation
, a
,
2707 attach_command_continuation_free_args
);
2709 do_cleanups (old_chain
);
2713 async_exec
= leave_running
;
2714 attach_command_post_wait ("" /* args */, from_tty
, async_exec
);
2716 do_cleanups (old_chain
);
2721 * takes a program previously attached to and detaches it.
2722 * The program resumes execution and will no longer stop
2723 * on signals, etc. We better not have left any breakpoints
2724 * in the program or it'll die when it hits one. For this
2725 * to work, it may be necessary for the process to have been
2726 * previously attached. It *might* work if the program was
2727 * started via the normal ptrace (PTRACE_TRACEME).
2731 detach_command (char *args
, int from_tty
)
2733 dont_repeat (); /* Not for the faint of heart. */
2735 if (ptid_equal (inferior_ptid
, null_ptid
))
2736 error (_("The program is not being run."));
2738 query_if_trace_running (from_tty
);
2740 disconnect_tracing ();
2742 target_detach (args
, from_tty
);
2744 /* If the solist is global across inferiors, don't clear it when we
2745 detach from a single inferior. */
2746 if (!gdbarch_has_global_solist (target_gdbarch ()))
2747 no_shared_libraries (NULL
, from_tty
);
2749 /* If we still have inferiors to debug, then don't mess with their
2751 if (!have_inferiors ())
2752 init_thread_list ();
2754 if (deprecated_detach_hook
)
2755 deprecated_detach_hook ();
2758 /* Disconnect from the current target without resuming it (leaving it
2759 waiting for a debugger).
2761 We'd better not have left any breakpoints in the program or the
2762 next debugger will get confused. Currently only supported for some
2763 remote targets, since the normal attach mechanisms don't work on
2764 stopped processes on some native platforms (e.g. GNU/Linux). */
2767 disconnect_command (char *args
, int from_tty
)
2769 dont_repeat (); /* Not for the faint of heart. */
2770 query_if_trace_running (from_tty
);
2771 disconnect_tracing ();
2772 target_disconnect (args
, from_tty
);
2773 no_shared_libraries (NULL
, from_tty
);
2774 init_thread_list ();
2775 if (deprecated_detach_hook
)
2776 deprecated_detach_hook ();
2780 interrupt_target_1 (int all_threads
)
2785 ptid
= minus_one_ptid
;
2787 ptid
= inferior_ptid
;
2788 target_interrupt (ptid
);
2790 /* Tag the thread as having been explicitly requested to stop, so
2791 other parts of gdb know not to resume this thread automatically,
2792 if it was stopped due to an internal event. Limit this to
2793 non-stop mode, as when debugging a multi-threaded application in
2794 all-stop mode, we will only get one stop event --- it's undefined
2795 which thread will report the event. */
2797 set_stop_requested (ptid
, 1);
2801 Stop the execution of the target while running in async mode, in
2802 the backgound. In all-stop, stop the whole process. In non-stop
2803 mode, stop the current thread only by default, or stop all threads
2804 if the `-a' switch is used. */
2807 interrupt_command (char *args
, int from_tty
)
2809 if (target_can_async_p ())
2811 int all_threads
= 0;
2813 dont_repeat (); /* Not for the faint of heart. */
2816 && startswith (args
, "-a"))
2819 if (!non_stop
&& all_threads
)
2820 error (_("-a is meaningless in all-stop mode."));
2822 interrupt_target_1 (all_threads
);
2826 /* See inferior.h. */
2829 default_print_float_info (struct gdbarch
*gdbarch
, struct ui_file
*file
,
2830 struct frame_info
*frame
, const char *args
)
2833 int printed_something
= 0;
2836 regnum
< gdbarch_num_regs (gdbarch
)
2837 + gdbarch_num_pseudo_regs (gdbarch
);
2840 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, float_reggroup
))
2842 printed_something
= 1;
2843 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
2846 if (!printed_something
)
2847 fprintf_filtered (file
, "No floating-point info "
2848 "available for this processor.\n");
2852 float_info (char *args
, int from_tty
)
2854 struct frame_info
*frame
;
2856 if (!target_has_registers
)
2857 error (_("The program has no registers now."));
2859 frame
= get_selected_frame (NULL
);
2860 gdbarch_print_float_info (get_frame_arch (frame
), gdb_stdout
, frame
, args
);
2864 unset_command (char *args
, int from_tty
)
2866 printf_filtered (_("\"unset\" must be followed by the "
2867 "name of an unset subcommand.\n"));
2868 help_list (unsetlist
, "unset ", all_commands
, gdb_stdout
);
2871 /* Implement `info proc' family of commands. */
2874 info_proc_cmd_1 (char *args
, enum info_proc_what what
, int from_tty
)
2876 struct gdbarch
*gdbarch
= get_current_arch ();
2878 if (!target_info_proc (args
, what
))
2880 if (gdbarch_info_proc_p (gdbarch
))
2881 gdbarch_info_proc (gdbarch
, args
, what
);
2883 error (_("Not supported on this target."));
2887 /* Implement `info proc' when given without any futher parameters. */
2890 info_proc_cmd (char *args
, int from_tty
)
2892 info_proc_cmd_1 (args
, IP_MINIMAL
, from_tty
);
2895 /* Implement `info proc mappings'. */
2898 info_proc_cmd_mappings (char *args
, int from_tty
)
2900 info_proc_cmd_1 (args
, IP_MAPPINGS
, from_tty
);
2903 /* Implement `info proc stat'. */
2906 info_proc_cmd_stat (char *args
, int from_tty
)
2908 info_proc_cmd_1 (args
, IP_STAT
, from_tty
);
2911 /* Implement `info proc status'. */
2914 info_proc_cmd_status (char *args
, int from_tty
)
2916 info_proc_cmd_1 (args
, IP_STATUS
, from_tty
);
2919 /* Implement `info proc cwd'. */
2922 info_proc_cmd_cwd (char *args
, int from_tty
)
2924 info_proc_cmd_1 (args
, IP_CWD
, from_tty
);
2927 /* Implement `info proc cmdline'. */
2930 info_proc_cmd_cmdline (char *args
, int from_tty
)
2932 info_proc_cmd_1 (args
, IP_CMDLINE
, from_tty
);
2935 /* Implement `info proc exe'. */
2938 info_proc_cmd_exe (char *args
, int from_tty
)
2940 info_proc_cmd_1 (args
, IP_EXE
, from_tty
);
2943 /* Implement `info proc all'. */
2946 info_proc_cmd_all (char *args
, int from_tty
)
2948 info_proc_cmd_1 (args
, IP_ALL
, from_tty
);
2952 _initialize_infcmd (void)
2954 static struct cmd_list_element
*info_proc_cmdlist
;
2955 struct cmd_list_element
*c
= NULL
;
2956 const char *cmd_name
;
2958 /* Add the filename of the terminal connected to inferior I/O. */
2959 add_setshow_filename_cmd ("inferior-tty", class_run
,
2960 &inferior_io_terminal_scratch
, _("\
2961 Set terminal for future runs of program being debugged."), _("\
2962 Show terminal for future runs of program being debugged."), _("\
2963 Usage: set inferior-tty /dev/pts/1"),
2964 set_inferior_tty_command
,
2965 show_inferior_tty_command
,
2966 &setlist
, &showlist
);
2967 add_com_alias ("tty", "set inferior-tty", class_alias
, 0);
2970 add_setshow_string_noescape_cmd (cmd_name
, class_run
,
2971 &inferior_args_scratch
, _("\
2972 Set argument list to give program being debugged when it is started."), _("\
2973 Show argument list to give program being debugged when it is started."), _("\
2974 Follow this command with any number of args, to be passed to the program."),
2977 &setlist
, &showlist
);
2978 c
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
2979 gdb_assert (c
!= NULL
);
2980 set_cmd_completer (c
, filename_completer
);
2982 c
= add_cmd ("environment", no_class
, environment_info
, _("\
2983 The environment to give the program, or one variable's value.\n\
2984 With an argument VAR, prints the value of environment variable VAR to\n\
2985 give the program being debugged. With no arguments, prints the entire\n\
2986 environment to be given to the program."), &showlist
);
2987 set_cmd_completer (c
, noop_completer
);
2989 add_prefix_cmd ("unset", no_class
, unset_command
,
2990 _("Complement to certain \"set\" commands."),
2991 &unsetlist
, "unset ", 0, &cmdlist
);
2993 c
= add_cmd ("environment", class_run
, unset_environment_command
, _("\
2994 Cancel environment variable VAR for the program.\n\
2995 This does not affect the program until the next \"run\" command."),
2997 set_cmd_completer (c
, noop_completer
);
2999 c
= add_cmd ("environment", class_run
, set_environment_command
, _("\
3000 Set environment variable value to give the program.\n\
3001 Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\
3002 VALUES of environment variables are uninterpreted strings.\n\
3003 This does not affect the program until the next \"run\" command."),
3005 set_cmd_completer (c
, noop_completer
);
3007 c
= add_com ("path", class_files
, path_command
, _("\
3008 Add directory DIR(s) to beginning of search path for object files.\n\
3009 $cwd in the path means the current working directory.\n\
3010 This path is equivalent to the $PATH shell variable. It is a list of\n\
3011 directories, separated by colons. These directories are searched to find\n\
3012 fully linked executable files and separately compiled object files as \
3014 set_cmd_completer (c
, filename_completer
);
3016 c
= add_cmd ("paths", no_class
, path_info
, _("\
3017 Current search path for finding object files.\n\
3018 $cwd in the path means the current working directory.\n\
3019 This path is equivalent to the $PATH shell variable. It is a list of\n\
3020 directories, separated by colons. These directories are searched to find\n\
3021 fully linked executable files and separately compiled object files as \
3024 set_cmd_completer (c
, noop_completer
);
3026 add_prefix_cmd ("kill", class_run
, kill_command
,
3027 _("Kill execution of program being debugged."),
3028 &killlist
, "kill ", 0, &cmdlist
);
3030 add_com ("attach", class_run
, attach_command
, _("\
3031 Attach to a process or file outside of GDB.\n\
3032 This command attaches to another target, of the same type as your last\n\
3033 \"target\" command (\"info files\" will show your target stack).\n\
3034 The command may take as argument a process id or a device file.\n\
3035 For a process id, you must have permission to send the process a signal,\n\
3036 and it must have the same effective uid as the debugger.\n\
3037 When using \"attach\" with a process id, the debugger finds the\n\
3038 program running in the process, looking first in the current working\n\
3039 directory, or (if not found there) using the source file search path\n\
3040 (see the \"directory\" command). You can also use the \"file\" command\n\
3041 to specify the program, and to load its symbol table."));
3043 add_prefix_cmd ("detach", class_run
, detach_command
, _("\
3044 Detach a process or file previously attached.\n\
3045 If a process, it is no longer traced, and it continues its execution. If\n\
3046 you were debugging a file, the file is closed and gdb no longer accesses it."),
3047 &detachlist
, "detach ", 0, &cmdlist
);
3049 add_com ("disconnect", class_run
, disconnect_command
, _("\
3050 Disconnect from a target.\n\
3051 The target will wait for another debugger to connect. Not available for\n\
3054 c
= add_com ("signal", class_run
, signal_command
, _("\
3055 Continue program with the specified signal.\n\
3056 Usage: signal SIGNAL\n\
3057 The SIGNAL argument is processed the same as the handle command.\n\
3059 An argument of \"0\" means continue the program without sending it a signal.\n\
3060 This is useful in cases where the program stopped because of a signal,\n\
3061 and you want to resume the program while discarding the signal.\n\
3063 In a multi-threaded program the signal is delivered to, or discarded from,\n\
3064 the current thread only."));
3065 set_cmd_completer (c
, signal_completer
);
3067 c
= add_com ("queue-signal", class_run
, queue_signal_command
, _("\
3068 Queue a signal to be delivered to the current thread when it is resumed.\n\
3069 Usage: queue-signal SIGNAL\n\
3070 The SIGNAL argument is processed the same as the handle command.\n\
3071 It is an error if the handling state of SIGNAL is \"nopass\".\n\
3073 An argument of \"0\" means remove any currently queued signal from\n\
3074 the current thread. This is useful in cases where the program stopped\n\
3075 because of a signal, and you want to resume it while discarding the signal.\n\
3077 In a multi-threaded program the signal is queued with, or discarded from,\n\
3078 the current thread only."));
3079 set_cmd_completer (c
, signal_completer
);
3081 add_com ("stepi", class_run
, stepi_command
, _("\
3082 Step one instruction exactly.\n\
3084 Argument N means step N times (or till program stops for another \
3086 add_com_alias ("si", "stepi", class_alias
, 0);
3088 add_com ("nexti", class_run
, nexti_command
, _("\
3089 Step one instruction, but proceed through subroutine calls.\n\
3091 Argument N means step N times (or till program stops for another \
3093 add_com_alias ("ni", "nexti", class_alias
, 0);
3095 add_com ("finish", class_run
, finish_command
, _("\
3096 Execute until selected stack frame returns.\n\
3098 Upon return, the value returned is printed and put in the value history."));
3099 add_com_alias ("fin", "finish", class_run
, 1);
3101 add_com ("next", class_run
, next_command
, _("\
3102 Step program, proceeding through subroutine calls.\n\
3104 Unlike \"step\", if the current source line calls a subroutine,\n\
3105 this command does not enter the subroutine, but instead steps over\n\
3106 the call, in effect treating it as a single source line."));
3107 add_com_alias ("n", "next", class_run
, 1);
3109 add_com ("step", class_run
, step_command
, _("\
3110 Step program until it reaches a different source line.\n\
3112 Argument N means step N times (or till program stops for another \
3114 add_com_alias ("s", "step", class_run
, 1);
3116 c
= add_com ("until", class_run
, until_command
, _("\
3117 Execute until the program reaches a source line greater than the current\n\
3118 or a specified location (same args as break command) within the current \
3120 set_cmd_completer (c
, location_completer
);
3121 add_com_alias ("u", "until", class_run
, 1);
3123 c
= add_com ("advance", class_run
, advance_command
, _("\
3124 Continue the program up to the given location (same form as args for break \
3126 Execution will also stop upon exit from the current stack frame."));
3127 set_cmd_completer (c
, location_completer
);
3129 c
= add_com ("jump", class_run
, jump_command
, _("\
3130 Continue program being debugged at specified line or address.\n\
3131 Usage: jump <location>\n\
3132 Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\
3133 for an address to start at."));
3134 set_cmd_completer (c
, location_completer
);
3135 add_com_alias ("j", "jump", class_run
, 1);
3137 add_com ("continue", class_run
, continue_command
, _("\
3138 Continue program being debugged, after signal or breakpoint.\n\
3139 Usage: continue [N]\n\
3140 If proceeding from breakpoint, a number N may be used as an argument,\n\
3141 which means to set the ignore count of that breakpoint to N - 1 (so that\n\
3142 the breakpoint won't break until the Nth time it is reached).\n\
3144 If non-stop mode is enabled, continue only the current thread,\n\
3145 otherwise all the threads in the program are continued. To \n\
3146 continue all stopped threads in non-stop mode, use the -a option.\n\
3147 Specifying -a and an ignore count simultaneously is an error."));
3148 add_com_alias ("c", "cont", class_run
, 1);
3149 add_com_alias ("fg", "cont", class_run
, 1);
3151 c
= add_com ("run", class_run
, run_command
, _("\
3152 Start debugged program. You may specify arguments to give it.\n\
3153 Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\
3154 Input and output redirection with \">\", \"<\", or \">>\" are also \
3156 With no arguments, uses arguments last specified (with \"run\" \
3157 or \"set args\").\n\
3158 To cancel previous arguments and run with no arguments,\n\
3159 use \"set args\" without arguments."));
3160 set_cmd_completer (c
, filename_completer
);
3161 add_com_alias ("r", "run", class_run
, 1);
3163 c
= add_com ("start", class_run
, start_command
, _("\
3164 Run the debugged program until the beginning of the main procedure.\n\
3165 You may specify arguments to give to your program, just as with the\n\
3166 \"run\" command."));
3167 set_cmd_completer (c
, filename_completer
);
3169 add_com ("interrupt", class_run
, interrupt_command
,
3170 _("Interrupt the execution of the debugged program.\n\
3171 If non-stop mode is enabled, interrupt only the current thread,\n\
3172 otherwise all the threads in the program are stopped. To \n\
3173 interrupt all running threads in non-stop mode, use the -a option."));
3175 c
= add_info ("registers", nofp_registers_info
, _("\
3176 List of integer registers and their contents, for selected stack frame.\n\
3177 Register name as argument means describe only that register."));
3178 add_info_alias ("r", "registers", 1);
3179 set_cmd_completer (c
, reg_or_group_completer
);
3181 c
= add_info ("all-registers", all_registers_info
, _("\
3182 List of all registers and their contents, for selected stack frame.\n\
3183 Register name as argument means describe only that register."));
3184 set_cmd_completer (c
, reg_or_group_completer
);
3186 add_info ("program", program_info
,
3187 _("Execution status of the program."));
3189 add_info ("float", float_info
,
3190 _("Print the status of the floating point unit\n"));
3192 add_info ("vector", vector_info
,
3193 _("Print the status of the vector unit\n"));
3195 add_prefix_cmd ("proc", class_info
, info_proc_cmd
,
3197 Show /proc process information about any running process.\n\
3198 Specify any process id, or use the program being debugged by default."),
3199 &info_proc_cmdlist
, "info proc ",
3200 1/*allow-unknown*/, &infolist
);
3202 add_cmd ("mappings", class_info
, info_proc_cmd_mappings
, _("\
3203 List of mapped memory regions."),
3204 &info_proc_cmdlist
);
3206 add_cmd ("stat", class_info
, info_proc_cmd_stat
, _("\
3207 List process info from /proc/PID/stat."),
3208 &info_proc_cmdlist
);
3210 add_cmd ("status", class_info
, info_proc_cmd_status
, _("\
3211 List process info from /proc/PID/status."),
3212 &info_proc_cmdlist
);
3214 add_cmd ("cwd", class_info
, info_proc_cmd_cwd
, _("\
3215 List current working directory of the process."),
3216 &info_proc_cmdlist
);
3218 add_cmd ("cmdline", class_info
, info_proc_cmd_cmdline
, _("\
3219 List command line arguments of the process."),
3220 &info_proc_cmdlist
);
3222 add_cmd ("exe", class_info
, info_proc_cmd_exe
, _("\
3223 List absolute filename for executable of the process."),
3224 &info_proc_cmdlist
);
3226 add_cmd ("all", class_info
, info_proc_cmd_all
, _("\
3227 List all available /proc info."),
3228 &info_proc_cmdlist
);