1 /* Memory-access and commands for "inferior" process, for GDB.
3 Copyright (C) 1986-2014 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"
58 /* Local functions: */
60 static void nofp_registers_info (char *, int);
62 static void print_return_value (struct value
*function
,
63 struct type
*value_type
);
65 static void until_next_command (int);
67 static void until_command (char *, int);
69 static void path_info (char *, int);
71 static void path_command (char *, int);
73 static void unset_command (char *, int);
75 static void float_info (char *, int);
77 static void disconnect_command (char *, int);
79 static void unset_environment_command (char *, int);
81 static void set_environment_command (char *, int);
83 static void environment_info (char *, int);
85 static void program_info (char *, int);
87 static void finish_command (char *, int);
89 static void signal_command (char *, int);
91 static void jump_command (char *, int);
93 static void step_1 (int, int, char *);
94 static void step_once (int skip_subroutines
, int single_inst
,
95 int count
, int thread
);
97 static void next_command (char *, int);
99 static void step_command (char *, int);
101 static void run_command (char *, int);
103 static void run_no_args_command (char *args
, int from_tty
);
105 static void go_command (char *line_no
, int from_tty
);
107 void _initialize_infcmd (void);
109 #define ERROR_NO_INFERIOR \
110 if (!target_has_execution) error (_("The program is not being run."));
112 /* Scratch area where string containing arguments to give to the
113 program will be stored by 'set args'. As soon as anything is
114 stored, notice_args_set will move it into per-inferior storage.
115 Arguments are separated by spaces. Empty string (pointer to '\0')
118 static char *inferior_args_scratch
;
120 /* Scratch area where 'set inferior-tty' will store user-provided value.
121 We'll immediate copy it into per-inferior storage. */
123 static char *inferior_io_terminal_scratch
;
125 /* Pid of our debugged inferior, or 0 if no inferior now.
126 Since various parts of infrun.c test this to see whether there is a program
127 being debugged it should be nonzero (currently 3 is used) for remote
130 ptid_t inferior_ptid
;
132 /* Address at which inferior stopped. */
136 /* Nonzero if stopped due to completion of a stack dummy routine. */
138 enum stop_stack_kind stop_stack_dummy
;
140 /* Nonzero if stopped due to a random (unexpected) signal in inferior
143 int stopped_by_random_signal
;
145 /* See inferior.h. */
147 int startup_with_shell
= 1;
150 /* Accessor routines. */
152 /* Set the io terminal for the current inferior. Ownership of
153 TERMINAL_NAME is not transferred. */
156 set_inferior_io_terminal (const char *terminal_name
)
158 xfree (current_inferior ()->terminal
);
159 current_inferior ()->terminal
= terminal_name
? xstrdup (terminal_name
) : 0;
163 get_inferior_io_terminal (void)
165 return current_inferior ()->terminal
;
169 set_inferior_tty_command (char *args
, int from_tty
,
170 struct cmd_list_element
*c
)
172 /* CLI has assigned the user-provided value to inferior_io_terminal_scratch.
173 Now route it to current inferior. */
174 set_inferior_io_terminal (inferior_io_terminal_scratch
);
178 show_inferior_tty_command (struct ui_file
*file
, int from_tty
,
179 struct cmd_list_element
*c
, const char *value
)
181 /* Note that we ignore the passed-in value in favor of computing it
183 const char *inferior_io_terminal
= get_inferior_io_terminal ();
185 if (inferior_io_terminal
== NULL
)
186 inferior_io_terminal
= "";
187 fprintf_filtered (gdb_stdout
,
188 _("Terminal for future runs of program being debugged "
189 "is \"%s\".\n"), inferior_io_terminal
);
193 get_inferior_args (void)
195 if (current_inferior ()->argc
!= 0)
199 n
= construct_inferior_arguments (current_inferior ()->argc
,
200 current_inferior ()->argv
);
201 set_inferior_args (n
);
205 if (current_inferior ()->args
== NULL
)
206 current_inferior ()->args
= xstrdup ("");
208 return current_inferior ()->args
;
211 /* Set the arguments for the current inferior. Ownership of
212 NEWARGS is not transferred. */
215 set_inferior_args (char *newargs
)
217 xfree (current_inferior ()->args
);
218 current_inferior ()->args
= newargs
? xstrdup (newargs
) : NULL
;
219 current_inferior ()->argc
= 0;
220 current_inferior ()->argv
= 0;
224 set_inferior_args_vector (int argc
, char **argv
)
226 current_inferior ()->argc
= argc
;
227 current_inferior ()->argv
= argv
;
230 /* Notice when `set args' is run. */
233 set_args_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
235 /* CLI has assigned the user-provided value to inferior_args_scratch.
236 Now route it to current inferior. */
237 set_inferior_args (inferior_args_scratch
);
240 /* Notice when `show args' is run. */
243 show_args_command (struct ui_file
*file
, int from_tty
,
244 struct cmd_list_element
*c
, const char *value
)
246 /* Note that we ignore the passed-in value in favor of computing it
248 deprecated_show_value_hack (file
, from_tty
, c
, get_inferior_args ());
252 /* Compute command-line string given argument vector. This does the
253 same shell processing as fork_inferior. */
256 construct_inferior_arguments (int argc
, char **argv
)
260 if (startup_with_shell
)
263 /* This holds all the characters considered special to the
265 char *special
= "\"!&*|[]{}<>?`~^=;, \t\n";
266 const char quote
= '"';
268 /* This holds all the characters considered special to the
269 typical Unix shells. We include `^' because the SunOS
270 /bin/sh treats it as a synonym for `|'. */
271 char *special
= "\"!#$&*()\\|[]{}<>?'`~^; \t\n";
272 const char quote
= '\'';
278 /* We over-compute the size. It shouldn't matter. */
279 for (i
= 0; i
< argc
; ++i
)
280 length
+= 3 * strlen (argv
[i
]) + 1 + 2 * (argv
[i
][0] == '\0');
282 result
= (char *) xmalloc (length
);
285 for (i
= 0; i
< argc
; ++i
)
290 /* Need to handle empty arguments specially. */
291 if (argv
[i
][0] == '\0')
301 if (strpbrk (argv
[i
], special
))
307 for (cp
= argv
[i
]; *cp
; ++cp
)
311 /* A newline cannot be quoted with a backslash (it
312 just disappears), only by putting it inside
323 if (strchr (special
, *cp
) != NULL
)
339 /* In this case we can't handle arguments that contain spaces,
340 tabs, or newlines -- see breakup_args(). */
344 for (i
= 0; i
< argc
; ++i
)
346 char *cp
= strchr (argv
[i
], ' ');
348 cp
= strchr (argv
[i
], '\t');
350 cp
= strchr (argv
[i
], '\n');
352 error (_("can't handle command-line "
353 "argument containing whitespace"));
354 length
+= strlen (argv
[i
]) + 1;
357 result
= (char *) xmalloc (length
);
359 for (i
= 0; i
< argc
; ++i
)
362 strcat (result
, " ");
363 strcat (result
, argv
[i
]);
371 /* This function strips the '&' character (indicating background
372 execution) that is added as *the last* of the arguments ARGS of a
373 command. A copy of the incoming ARGS without the '&' is returned,
374 unless the resulting string after stripping is empty, in which case
375 NULL is returned. *BG_CHAR_P is an output boolean that indicates
376 whether the '&' character was found. */
379 strip_bg_char (const char *args
, int *bg_char_p
)
383 if (args
== NULL
|| *args
== '\0')
389 p
= args
+ strlen (args
);
393 while (p
> args
&& isspace (p
[-1]))
398 return savestring (args
, p
- args
);
404 return xstrdup (args
);
407 /* Common actions to take after creating any sort of inferior, by any
408 means (running, attaching, connecting, et cetera). The target
409 should be stopped. */
412 post_create_inferior (struct target_ops
*target
, int from_tty
)
414 volatile struct gdb_exception ex
;
416 /* Be sure we own the terminal in case write operations are performed. */
417 target_terminal_ours ();
419 /* If the target hasn't taken care of this already, do it now.
420 Targets which need to access registers during to_open,
421 to_create_inferior, or to_attach should do it earlier; but many
423 target_find_description ();
425 /* Now that we know the register layout, retrieve current PC. But
426 if the PC is unavailable (e.g., we're opening a core file with
427 missing registers info), ignore it. */
429 TRY_CATCH (ex
, RETURN_MASK_ERROR
)
431 stop_pc
= regcache_read_pc (get_current_regcache ());
433 if (ex
.reason
< 0 && ex
.error
!= NOT_AVAILABLE_ERROR
)
434 throw_exception (ex
);
438 const unsigned solib_add_generation
439 = current_program_space
->solib_add_generation
;
441 /* Create the hooks to handle shared library load and unload
443 solib_create_inferior_hook (from_tty
);
445 if (current_program_space
->solib_add_generation
== solib_add_generation
)
447 /* The platform-specific hook should load initial shared libraries,
448 but didn't. FROM_TTY will be incorrectly 0 but such solib
449 targets should be fixed anyway. Call it only after the solib
450 target has been initialized by solib_create_inferior_hook. */
453 warning (_("platform-specific solib_create_inferior_hook did "
454 "not load initial shared libraries."));
456 /* If the solist is global across processes, there's no need to
458 if (!gdbarch_has_global_solist (target_gdbarch ()))
459 solib_add (NULL
, 0, target
, auto_solib_add
);
463 /* If the user sets watchpoints before execution having started,
464 then she gets software watchpoints, because GDB can't know which
465 target will end up being pushed, or if it supports hardware
466 watchpoints or not. breakpoint_re_set takes care of promoting
467 watchpoints to hardware watchpoints if possible, however, if this
468 new inferior doesn't load shared libraries or we don't pull in
469 symbols from any other source on this target/arch,
470 breakpoint_re_set is never called. Call it now so that software
471 watchpoints get a chance to be promoted to hardware watchpoints
472 if the now pushed target supports hardware watchpoints. */
473 breakpoint_re_set ();
475 observer_notify_inferior_created (target
, from_tty
);
478 /* Kill the inferior if already running. This function is designed
479 to be called when we are about to start the execution of the program
480 from the beginning. Ask the user to confirm that he wants to restart
481 the program being debugged when FROM_TTY is non-null. */
484 kill_if_already_running (int from_tty
)
486 if (! ptid_equal (inferior_ptid
, null_ptid
) && target_has_execution
)
488 /* Bail out before killing the program if we will not be able to
490 target_require_runnable ();
493 && !query (_("The program being debugged has been started already.\n\
494 Start it from the beginning? ")))
495 error (_("Program not restarted."));
500 /* See inferior.h. */
503 prepare_execution_command (struct target_ops
*target
, int background
)
505 /* If we get a request for running in the bg but the target
506 doesn't support it, error out. */
507 if (background
&& !target
->to_can_async_p (target
))
508 error (_("Asynchronous execution not supported on this target."));
510 /* If we don't get a request of running in the bg, then we need
511 to simulate synchronous (fg) execution. */
512 if (!background
&& target
->to_can_async_p (target
))
514 /* Simulate synchronous execution. Note no cleanup is necessary
515 for this. stdin is re-enabled whenever an error reaches the
517 async_disable_stdin ();
521 /* Implement the "run" command. If TBREAK_AT_MAIN is set, then insert
522 a temporary breakpoint at the begining of the main program before
523 running the program. */
526 run_command_1 (char *args
, int from_tty
, int tbreak_at_main
)
529 struct cleanup
*old_chain
;
531 struct ui_out
*uiout
= current_uiout
;
532 struct target_ops
*run_target
;
534 struct cleanup
*args_chain
;
538 kill_if_already_running (from_tty
);
540 init_wait_for_inferior ();
541 clear_breakpoint_hit_counts ();
543 /* Clean up any leftovers from other runs. Some other things from
544 this function should probably be moved into target_pre_inferior. */
545 target_pre_inferior (from_tty
);
547 /* The comment here used to read, "The exec file is re-read every
548 time we do a generic_mourn_inferior, so we just have to worry
549 about the symbol file." The `generic_mourn_inferior' function
550 gets called whenever the program exits. However, suppose the
551 program exits, and *then* the executable file changes? We need
552 to check again here. Since reopen_exec_file doesn't do anything
553 if the timestamp hasn't changed, I don't see the harm. */
557 args
= strip_bg_char (args
, &async_exec
);
558 args_chain
= make_cleanup (xfree
, args
);
560 /* Do validation and preparation before possibly changing anything
563 run_target
= find_run_target ();
565 prepare_execution_command (run_target
, async_exec
);
567 if (non_stop
&& !run_target
->to_supports_non_stop (run_target
))
568 error (_("The target does not support running in non-stop mode."));
570 /* Done. Can now set breakpoints, change inferior args, etc. */
572 /* Insert the temporary breakpoint if a location was specified. */
574 tbreak_command (main_name (), 0);
576 exec_file
= (char *) get_exec_file (0);
578 /* We keep symbols from add-symbol-file, on the grounds that the
579 user might want to add some symbols before running the program
580 (right?). But sometimes (dynamic loading where the user manually
581 introduces the new symbols with add-symbol-file), the code which
582 the symbols describe does not persist between runs. Currently
583 the user has to manually nuke all symbols between runs if they
584 want them to go away (PR 2207). This is probably reasonable. */
586 /* If there were other args, beside '&', process them. */
588 set_inferior_args (args
);
592 ui_out_field_string (uiout
, NULL
, "Starting program");
593 ui_out_text (uiout
, ": ");
595 ui_out_field_string (uiout
, "execfile", exec_file
);
596 ui_out_spaces (uiout
, 1);
597 /* We call get_inferior_args() because we might need to compute
599 ui_out_field_string (uiout
, "infargs", get_inferior_args ());
600 ui_out_text (uiout
, "\n");
601 ui_out_flush (uiout
);
604 /* Done with ARGS. */
605 do_cleanups (args_chain
);
607 /* We call get_inferior_args() because we might need to compute
609 run_target
->to_create_inferior (run_target
, exec_file
, get_inferior_args (),
610 environ_vector (current_inferior ()->environment
),
612 /* to_create_inferior should push the target, so after this point we
613 shouldn't refer to run_target again. */
616 /* We're starting off a new process. When we get out of here, in
617 non-stop mode, finish the state of all threads of that process,
618 but leave other threads alone, as they may be stopped in internal
619 events --- the frontend shouldn't see them as stopped. In
620 all-stop, always finish the state of all threads, as we may be
621 resuming more than just the new process. */
623 ptid
= pid_to_ptid (ptid_get_pid (inferior_ptid
));
625 ptid
= minus_one_ptid
;
626 old_chain
= make_cleanup (finish_thread_state_cleanup
, &ptid
);
628 /* Pass zero for FROM_TTY, because at this point the "run" command
629 has done its thing; now we are setting up the running program. */
630 post_create_inferior (¤t_target
, 0);
632 /* Start the target running. Do not use -1 continuation as it would skip
633 breakpoint right at the entry point. */
634 proceed (regcache_read_pc (get_current_regcache ()), GDB_SIGNAL_0
, 0);
636 /* Since there was no error, there's no need to finish the thread
638 discard_cleanups (old_chain
);
642 run_command (char *args
, int from_tty
)
644 run_command_1 (args
, from_tty
, 0);
648 run_no_args_command (char *args
, int from_tty
)
650 set_inferior_args ("");
654 /* Start the execution of the program up until the beginning of the main
658 start_command (char *args
, int from_tty
)
660 /* Some languages such as Ada need to search inside the program
661 minimal symbols for the location where to put the temporary
662 breakpoint before starting. */
663 if (!have_minimal_symbols ())
664 error (_("No symbol table loaded. Use the \"file\" command."));
666 /* Run the program until reaching the main procedure... */
667 run_command_1 (args
, from_tty
, 1);
671 proceed_thread_callback (struct thread_info
*thread
, void *arg
)
673 /* We go through all threads individually instead of compressing
674 into a single target `resume_all' request, because some threads
675 may be stopped in internal breakpoints/events, or stopped waiting
676 for its turn in the displaced stepping queue (that is, they are
677 running && !executing). The target side has no idea about why
678 the thread is stopped, so a `resume_all' command would resume too
679 much. If/when GDB gains a way to tell the target `hold this
680 thread stopped until I say otherwise', then we can optimize
682 if (!is_stopped (thread
->ptid
))
685 switch_to_thread (thread
->ptid
);
686 clear_proceed_status (0);
687 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
692 ensure_valid_thread (void)
694 if (ptid_equal (inferior_ptid
, null_ptid
)
695 || is_exited (inferior_ptid
))
696 error (_("Cannot execute this command without a live selected thread."));
699 /* If the user is looking at trace frames, any resumption of execution
700 is likely to mix up recorded and live target data. So simply
701 disallow those commands. */
704 ensure_not_tfind_mode (void)
706 if (get_traceframe_number () >= 0)
707 error (_("Cannot execute this command while looking at trace frames."));
710 /* Throw an error indicating the current thread is running. */
713 error_is_running (void)
715 error (_("Cannot execute this command while "
716 "the selected thread is running."));
719 /* Calls error_is_running if the current thread is running. */
722 ensure_not_running (void)
724 if (is_running (inferior_ptid
))
729 continue_1 (int all_threads
)
732 ensure_not_tfind_mode ();
734 if (non_stop
&& all_threads
)
736 /* Don't error out if the current thread is running, because
737 there may be other stopped threads. */
738 struct cleanup
*old_chain
;
740 /* Backup current thread and selected frame. */
741 old_chain
= make_cleanup_restore_current_thread ();
743 iterate_over_threads (proceed_thread_callback
, NULL
);
747 /* If all threads in the target were already running,
748 proceed_thread_callback ends up never calling proceed,
749 and so nothing calls this to put the inferior's terminal
750 settings in effect and remove stdin from the event loop,
751 which we must when running a foreground command. E.g.:
755 <all threads are running now>
758 <no thread was resumed, but the inferior now owns the terminal>
760 target_terminal_inferior ();
763 /* Restore selected ptid. */
764 do_cleanups (old_chain
);
768 ensure_valid_thread ();
769 ensure_not_running ();
770 clear_proceed_status (0);
771 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
775 /* continue [-a] [proceed-count] [&] */
778 continue_command (char *args
, int from_tty
)
782 struct cleanup
*args_chain
;
786 /* Find out whether we must run in the background. */
787 args
= strip_bg_char (args
, &async_exec
);
788 args_chain
= make_cleanup (xfree
, args
);
790 prepare_execution_command (¤t_target
, async_exec
);
794 if (strncmp (args
, "-a", sizeof ("-a") - 1) == 0)
797 args
+= sizeof ("-a") - 1;
803 if (!non_stop
&& all_threads
)
804 error (_("`-a' is meaningless in all-stop mode."));
806 if (args
!= NULL
&& all_threads
)
807 error (_("Can't resume all threads and specify "
808 "proceed count simultaneously."));
810 /* If we have an argument left, set proceed count of breakpoint we
817 struct thread_info
*tp
;
820 tp
= find_thread_ptid (inferior_ptid
);
824 struct target_waitstatus ws
;
826 get_last_target_status (&last_ptid
, &ws
);
827 tp
= find_thread_ptid (last_ptid
);
830 bs
= tp
->control
.stop_bpstat
;
832 while ((stat
= bpstat_num (&bs
, &num
)) != 0)
835 set_ignore_count (num
,
836 parse_and_eval_long (args
) - 1,
838 /* set_ignore_count prints a message ending with a period.
839 So print two spaces before "Continuing.". */
841 printf_filtered (" ");
845 if (!stopped
&& from_tty
)
848 ("Not stopped at any breakpoint; argument ignored.\n");
852 /* Done with ARGS. */
853 do_cleanups (args_chain
);
856 printf_filtered (_("Continuing.\n"));
858 continue_1 (all_threads
);
861 /* Record the starting point of a "step" or "next" command. */
864 set_step_frame (void)
866 struct symtab_and_line sal
;
868 find_frame_sal (get_current_frame (), &sal
);
869 set_step_info (get_current_frame (), sal
);
872 /* Step until outside of current statement. */
875 step_command (char *count_string
, int from_tty
)
877 step_1 (0, 0, count_string
);
880 /* Likewise, but skip over subroutine calls as if single instructions. */
883 next_command (char *count_string
, int from_tty
)
885 step_1 (1, 0, count_string
);
888 /* Likewise, but step only one instruction. */
891 stepi_command (char *count_string
, int from_tty
)
893 step_1 (0, 1, count_string
);
897 nexti_command (char *count_string
, int from_tty
)
899 step_1 (1, 1, count_string
);
903 delete_longjmp_breakpoint_cleanup (void *arg
)
905 int thread
= * (int *) arg
;
906 delete_longjmp_breakpoint (thread
);
910 step_1 (int skip_subroutines
, int single_inst
, char *count_string
)
913 struct cleanup
*cleanups
= make_cleanup (null_cleanup
, NULL
);
916 struct cleanup
*args_chain
;
919 ensure_not_tfind_mode ();
920 ensure_valid_thread ();
921 ensure_not_running ();
923 count_string
= strip_bg_char (count_string
, &async_exec
);
924 args_chain
= make_cleanup (xfree
, count_string
);
926 prepare_execution_command (¤t_target
, async_exec
);
928 count
= count_string
? parse_and_eval_long (count_string
) : 1;
930 /* Done with ARGS. */
931 do_cleanups (args_chain
);
933 if (!single_inst
|| skip_subroutines
) /* Leave si command alone. */
935 struct thread_info
*tp
= inferior_thread ();
937 if (in_thread_list (inferior_ptid
))
938 thread
= pid_to_thread_id (inferior_ptid
);
940 set_longjmp_breakpoint (tp
, get_frame_id (get_current_frame ()));
942 make_cleanup (delete_longjmp_breakpoint_cleanup
, &thread
);
945 /* In synchronous case, all is well; each step_once call will step once. */
946 if (!target_can_async_p ())
948 for (; count
> 0; count
--)
950 step_once (skip_subroutines
, single_inst
, count
, thread
);
952 if (!target_has_execution
)
956 struct thread_info
*tp
= inferior_thread ();
958 if (!tp
->control
.stop_step
|| !tp
->step_multi
)
960 /* If we stopped for some reason that is not stepping
961 there are no further steps to make. */
968 do_cleanups (cleanups
);
972 /* In the case of an asynchronous target things get complicated;
973 do only one step for now, before returning control to the
974 event loop. Let the continuation figure out how many other
975 steps we need to do, and handle them one at the time, through
977 step_once (skip_subroutines
, single_inst
, count
, thread
);
979 /* We are running, and the continuation is installed. It will
980 disable the longjmp breakpoint as appropriate. */
981 discard_cleanups (cleanups
);
985 struct step_1_continuation_args
988 int skip_subroutines
;
993 /* Called after we are done with one step operation, to check whether
994 we need to step again, before we print the prompt and return control
995 to the user. If count is > 1, we will need to do one more call to
996 proceed(), via step_once(). Basically it is like step_once and
997 step_1_continuation are co-recursive. */
1000 step_1_continuation (void *args
, int err
)
1002 struct step_1_continuation_args
*a
= args
;
1004 if (target_has_execution
)
1006 struct thread_info
*tp
;
1008 tp
= inferior_thread ();
1010 && tp
->step_multi
&& tp
->control
.stop_step
)
1012 /* There are more steps to make, and we did stop due to
1013 ending a stepping range. Do another step. */
1014 step_once (a
->skip_subroutines
, a
->single_inst
,
1015 a
->count
- 1, a
->thread
);
1021 /* We either hit an error, or stopped for some reason that is
1022 not stepping, or there are no further steps to make.
1024 if (!a
->single_inst
|| a
->skip_subroutines
)
1025 delete_longjmp_breakpoint (a
->thread
);
1028 /* Do just one step operation. This is useful to implement the 'step
1029 n' kind of commands. In case of asynchronous targets, we will have
1030 to set up a continuation to be done after the target stops (after
1031 this one step). For synch targets, the caller handles further
1035 step_once (int skip_subroutines
, int single_inst
, int count
, int thread
)
1037 struct frame_info
*frame
= get_current_frame ();
1041 /* Don't assume THREAD is a valid thread id. It is set to -1 if
1042 the longjmp breakpoint was not required. Use the
1043 INFERIOR_PTID thread instead, which is the same thread when
1045 struct thread_info
*tp
= inferior_thread ();
1047 clear_proceed_status (!skip_subroutines
);
1054 /* Step at an inlined function behaves like "down". */
1055 if (!skip_subroutines
1056 && inline_skipped_frames (inferior_ptid
))
1060 /* Pretend that we've ran. */
1061 resume_ptid
= user_visible_resume_ptid (1);
1062 set_running (resume_ptid
, 1);
1064 step_into_inline_frame (inferior_ptid
);
1066 step_once (skip_subroutines
, single_inst
, count
- 1, thread
);
1069 /* Pretend that we've stopped. */
1072 if (target_can_async_p ())
1073 inferior_event_handler (INF_EXEC_COMPLETE
, NULL
);
1078 pc
= get_frame_pc (frame
);
1079 find_pc_line_pc_range (pc
,
1080 &tp
->control
.step_range_start
,
1081 &tp
->control
.step_range_end
);
1083 tp
->control
.may_range_step
= 1;
1085 /* If we have no line info, switch to stepi mode. */
1086 if (tp
->control
.step_range_end
== 0 && step_stop_if_no_debug
)
1088 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1089 tp
->control
.may_range_step
= 0;
1091 else if (tp
->control
.step_range_end
== 0)
1095 if (find_pc_partial_function (pc
, &name
,
1096 &tp
->control
.step_range_start
,
1097 &tp
->control
.step_range_end
) == 0)
1098 error (_("Cannot find bounds of current function"));
1100 target_terminal_ours ();
1101 printf_filtered (_("Single stepping until exit from function %s,"
1102 "\nwhich has no line number information.\n"),
1108 /* Say we are stepping, but stop after one insn whatever it does. */
1109 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1110 if (!skip_subroutines
)
1112 Don't step over function calls, not even to functions lacking
1114 tp
->control
.step_over_calls
= STEP_OVER_NONE
;
1117 if (skip_subroutines
)
1118 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1120 tp
->step_multi
= (count
> 1);
1121 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 1);
1123 /* For async targets, register a continuation to do any
1124 additional steps. For sync targets, the caller will handle
1125 further stepping. */
1126 if (target_can_async_p ())
1128 struct step_1_continuation_args
*args
;
1130 args
= xmalloc (sizeof (*args
));
1131 args
->skip_subroutines
= skip_subroutines
;
1132 args
->single_inst
= single_inst
;
1133 args
->count
= count
;
1134 args
->thread
= thread
;
1136 add_intermediate_continuation (tp
, step_1_continuation
, args
, xfree
);
1142 /* Continue program at specified address. */
1145 jump_command (char *arg
, int from_tty
)
1147 struct gdbarch
*gdbarch
= get_current_arch ();
1149 struct symtabs_and_lines sals
;
1150 struct symtab_and_line sal
;
1154 struct cleanup
*args_chain
;
1157 ensure_not_tfind_mode ();
1158 ensure_valid_thread ();
1159 ensure_not_running ();
1161 /* Find out whether we must run in the background. */
1162 arg
= strip_bg_char (arg
, &async_exec
);
1163 args_chain
= make_cleanup (xfree
, arg
);
1165 prepare_execution_command (¤t_target
, async_exec
);
1168 error_no_arg (_("starting address"));
1170 sals
= decode_line_with_last_displayed (arg
, DECODE_LINE_FUNFIRSTLINE
);
1171 if (sals
.nelts
!= 1)
1173 error (_("Unreasonable jump request"));
1179 /* Done with ARGS. */
1180 do_cleanups (args_chain
);
1182 if (sal
.symtab
== 0 && sal
.pc
== 0)
1183 error (_("No source file has been specified."));
1185 resolve_sal_pc (&sal
); /* May error out. */
1187 /* See if we are trying to jump to another function. */
1188 fn
= get_frame_function (get_current_frame ());
1189 sfn
= find_pc_function (sal
.pc
);
1190 if (fn
!= NULL
&& sfn
!= fn
)
1192 if (!query (_("Line %d is not in `%s'. Jump anyway? "), sal
.line
,
1193 SYMBOL_PRINT_NAME (fn
)))
1195 error (_("Not confirmed."));
1202 fixup_symbol_section (sfn
, 0);
1203 if (section_is_overlay (SYMBOL_OBJ_SECTION (SYMBOL_OBJFILE (sfn
), sfn
)) &&
1204 !section_is_mapped (SYMBOL_OBJ_SECTION (SYMBOL_OBJFILE (sfn
), sfn
)))
1206 if (!query (_("WARNING!!! Destination is in "
1207 "unmapped overlay! Jump anyway? ")))
1209 error (_("Not confirmed."));
1219 printf_filtered (_("Continuing at "));
1220 fputs_filtered (paddress (gdbarch
, addr
), gdb_stdout
);
1221 printf_filtered (".\n");
1224 clear_proceed_status (0);
1225 proceed (addr
, GDB_SIGNAL_0
, 0);
1229 /* Go to line or address in current procedure. */
1232 go_command (char *line_no
, int from_tty
)
1234 if (line_no
== (char *) NULL
|| !*line_no
)
1235 printf_filtered (_("Usage: go <location>\n"));
1238 tbreak_command (line_no
, from_tty
);
1239 jump_command (line_no
, from_tty
);
1244 /* Continue program giving it specified signal. */
1247 signal_command (char *signum_exp
, int from_tty
)
1249 enum gdb_signal oursig
;
1251 struct cleanup
*args_chain
;
1253 dont_repeat (); /* Too dangerous. */
1255 ensure_not_tfind_mode ();
1256 ensure_valid_thread ();
1257 ensure_not_running ();
1259 /* Find out whether we must run in the background. */
1260 signum_exp
= strip_bg_char (signum_exp
, &async_exec
);
1261 args_chain
= make_cleanup (xfree
, signum_exp
);
1263 prepare_execution_command (¤t_target
, async_exec
);
1266 error_no_arg (_("signal number"));
1268 /* It would be even slicker to make signal names be valid expressions,
1269 (the type could be "enum $signal" or some such), then the user could
1270 assign them to convenience variables. */
1271 oursig
= gdb_signal_from_name (signum_exp
);
1273 if (oursig
== GDB_SIGNAL_UNKNOWN
)
1275 /* No, try numeric. */
1276 int num
= parse_and_eval_long (signum_exp
);
1279 oursig
= GDB_SIGNAL_0
;
1281 oursig
= gdb_signal_from_command (num
);
1284 /* Look for threads other than the current that this command ends up
1285 resuming too (due to schedlock off), and warn if they'll get a
1286 signal delivered. "signal 0" is used to suppress a previous
1287 signal, but if the current thread is no longer the one that got
1288 the signal, then the user is potentially suppressing the signal
1289 of the wrong thread. */
1292 struct thread_info
*tp
;
1294 int must_confirm
= 0;
1296 /* This indicates what will be resumed. Either a single thread,
1297 a whole process, or all threads of all processes. */
1298 resume_ptid
= user_visible_resume_ptid (0);
1300 ALL_NON_EXITED_THREADS (tp
)
1302 if (ptid_equal (tp
->ptid
, inferior_ptid
))
1304 if (!ptid_match (tp
->ptid
, resume_ptid
))
1307 if (tp
->suspend
.stop_signal
!= GDB_SIGNAL_0
1308 && signal_pass_state (tp
->suspend
.stop_signal
))
1311 printf_unfiltered (_("Note:\n"));
1312 printf_unfiltered (_(" Thread %d previously stopped with signal %s, %s.\n"),
1314 gdb_signal_to_name (tp
->suspend
.stop_signal
),
1315 gdb_signal_to_string (tp
->suspend
.stop_signal
));
1321 && !query (_("Continuing thread %d (the current thread) with specified signal will\n"
1322 "still deliver the signals noted above to their respective threads.\n"
1323 "Continue anyway? "),
1324 inferior_thread ()->num
))
1325 error (_("Not confirmed."));
1330 if (oursig
== GDB_SIGNAL_0
)
1331 printf_filtered (_("Continuing with no signal.\n"));
1333 printf_filtered (_("Continuing with signal %s.\n"),
1334 gdb_signal_to_name (oursig
));
1337 clear_proceed_status (0);
1338 proceed ((CORE_ADDR
) -1, oursig
, 0);
1341 /* Queue a signal to be delivered to the current thread. */
1344 queue_signal_command (char *signum_exp
, int from_tty
)
1346 enum gdb_signal oursig
;
1347 struct thread_info
*tp
;
1350 ensure_not_tfind_mode ();
1351 ensure_valid_thread ();
1352 ensure_not_running ();
1354 if (signum_exp
== NULL
)
1355 error_no_arg (_("signal number"));
1357 /* It would be even slicker to make signal names be valid expressions,
1358 (the type could be "enum $signal" or some such), then the user could
1359 assign them to convenience variables. */
1360 oursig
= gdb_signal_from_name (signum_exp
);
1362 if (oursig
== GDB_SIGNAL_UNKNOWN
)
1364 /* No, try numeric. */
1365 int num
= parse_and_eval_long (signum_exp
);
1368 oursig
= GDB_SIGNAL_0
;
1370 oursig
= gdb_signal_from_command (num
);
1373 if (oursig
!= GDB_SIGNAL_0
1374 && !signal_pass_state (oursig
))
1375 error (_("Signal handling set to not pass this signal to the program."));
1377 tp
= inferior_thread ();
1378 tp
->suspend
.stop_signal
= oursig
;
1381 /* Continuation args to be passed to the "until" command
1383 struct until_next_continuation_args
1385 /* The thread that was current when the command was executed. */
1389 /* A continuation callback for until_next_command. */
1392 until_next_continuation (void *arg
, int err
)
1394 struct until_next_continuation_args
*a
= arg
;
1396 delete_longjmp_breakpoint (a
->thread
);
1399 /* Proceed until we reach a different source line with pc greater than
1400 our current one or exit the function. We skip calls in both cases.
1402 Note that eventually this command should probably be changed so
1403 that only source lines are printed out when we hit the breakpoint
1404 we set. This may involve changes to wait_for_inferior and the
1405 proceed status code. */
1408 until_next_command (int from_tty
)
1410 struct frame_info
*frame
;
1412 struct symbol
*func
;
1413 struct symtab_and_line sal
;
1414 struct thread_info
*tp
= inferior_thread ();
1415 int thread
= tp
->num
;
1416 struct cleanup
*old_chain
;
1418 clear_proceed_status (0);
1421 frame
= get_current_frame ();
1423 /* Step until either exited from this function or greater
1424 than the current line (if in symbolic section) or pc (if
1427 pc
= get_frame_pc (frame
);
1428 func
= find_pc_function (pc
);
1432 struct bound_minimal_symbol msymbol
= lookup_minimal_symbol_by_pc (pc
);
1434 if (msymbol
.minsym
== NULL
)
1435 error (_("Execution is not within a known function."));
1437 tp
->control
.step_range_start
= BMSYMBOL_VALUE_ADDRESS (msymbol
);
1438 /* The upper-bound of step_range is exclusive. In order to make PC
1439 within the range, set the step_range_end with PC + 1. */
1440 tp
->control
.step_range_end
= pc
+ 1;
1444 sal
= find_pc_line (pc
, 0);
1446 tp
->control
.step_range_start
= BLOCK_START (SYMBOL_BLOCK_VALUE (func
));
1447 tp
->control
.step_range_end
= sal
.end
;
1449 tp
->control
.may_range_step
= 1;
1451 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1453 tp
->step_multi
= 0; /* Only one call to proceed */
1455 set_longjmp_breakpoint (tp
, get_frame_id (frame
));
1456 old_chain
= make_cleanup (delete_longjmp_breakpoint_cleanup
, &thread
);
1458 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 1);
1460 if (target_can_async_p () && is_running (inferior_ptid
))
1462 struct until_next_continuation_args
*cont_args
;
1464 discard_cleanups (old_chain
);
1465 cont_args
= XNEW (struct until_next_continuation_args
);
1466 cont_args
->thread
= inferior_thread ()->num
;
1468 add_continuation (tp
, until_next_continuation
, cont_args
, xfree
);
1471 do_cleanups (old_chain
);
1475 until_command (char *arg
, int from_tty
)
1478 struct cleanup
*args_chain
;
1481 ensure_not_tfind_mode ();
1482 ensure_valid_thread ();
1483 ensure_not_running ();
1485 /* Find out whether we must run in the background. */
1486 arg
= strip_bg_char (arg
, &async_exec
);
1487 args_chain
= make_cleanup (xfree
, arg
);
1489 prepare_execution_command (¤t_target
, async_exec
);
1492 until_break_command (arg
, from_tty
, 0);
1494 until_next_command (from_tty
);
1496 /* Done with ARGS. */
1497 do_cleanups (args_chain
);
1501 advance_command (char *arg
, int from_tty
)
1504 struct cleanup
*args_chain
;
1507 ensure_not_tfind_mode ();
1508 ensure_valid_thread ();
1509 ensure_not_running ();
1512 error_no_arg (_("a location"));
1514 /* Find out whether we must run in the background. */
1515 arg
= strip_bg_char (arg
, &async_exec
);
1516 args_chain
= make_cleanup (xfree
, arg
);
1518 prepare_execution_command (¤t_target
, async_exec
);
1520 until_break_command (arg
, from_tty
, 1);
1522 /* Done with ARGS. */
1523 do_cleanups (args_chain
);
1526 /* Return the value of the result of a function at the end of a 'finish'
1530 get_return_value (struct value
*function
, struct type
*value_type
)
1532 struct regcache
*stop_regs
= stop_registers
;
1533 struct gdbarch
*gdbarch
;
1534 struct value
*value
;
1535 struct cleanup
*cleanup
= make_cleanup (null_cleanup
, NULL
);
1537 /* If stop_registers were not saved, use the current registers. */
1540 stop_regs
= regcache_dup (get_current_regcache ());
1541 make_cleanup_regcache_xfree (stop_regs
);
1544 gdbarch
= get_regcache_arch (stop_regs
);
1546 CHECK_TYPEDEF (value_type
);
1547 gdb_assert (TYPE_CODE (value_type
) != TYPE_CODE_VOID
);
1549 /* FIXME: 2003-09-27: When returning from a nested inferior function
1550 call, it's possible (with no help from the architecture vector)
1551 to locate and return/print a "struct return" value. This is just
1552 a more complicated case of what is already being done in the
1553 inferior function call code. In fact, when inferior function
1554 calls are made async, this will likely be made the norm. */
1556 switch (gdbarch_return_value (gdbarch
, function
, value_type
,
1559 case RETURN_VALUE_REGISTER_CONVENTION
:
1560 case RETURN_VALUE_ABI_RETURNS_ADDRESS
:
1561 case RETURN_VALUE_ABI_PRESERVES_ADDRESS
:
1562 value
= allocate_value (value_type
);
1563 gdbarch_return_value (gdbarch
, function
, value_type
, stop_regs
,
1564 value_contents_raw (value
), NULL
);
1566 case RETURN_VALUE_STRUCT_CONVENTION
:
1570 internal_error (__FILE__
, __LINE__
, _("bad switch"));
1573 do_cleanups (cleanup
);
1578 /* Print the result of a function at the end of a 'finish' command. */
1581 print_return_value (struct value
*function
, struct type
*value_type
)
1583 struct value
*value
= get_return_value (function
, value_type
);
1584 struct ui_out
*uiout
= current_uiout
;
1588 struct value_print_options opts
;
1589 struct ui_file
*stb
;
1590 struct cleanup
*old_chain
;
1593 stb
= mem_fileopen ();
1594 old_chain
= make_cleanup_ui_file_delete (stb
);
1595 ui_out_text (uiout
, "Value returned is ");
1596 ui_out_field_fmt (uiout
, "gdb-result-var", "$%d",
1597 record_latest_value (value
));
1598 ui_out_text (uiout
, " = ");
1599 get_no_prettyformat_print_options (&opts
);
1600 value_print (value
, stb
, &opts
);
1601 ui_out_field_stream (uiout
, "return-value", stb
);
1602 ui_out_text (uiout
, "\n");
1603 do_cleanups (old_chain
);
1607 ui_out_text (uiout
, "Value returned has type: ");
1608 ui_out_field_string (uiout
, "return-type", TYPE_NAME (value_type
));
1609 ui_out_text (uiout
, ".");
1610 ui_out_text (uiout
, " Cannot determine contents\n");
1614 /* Stuff that needs to be done by the finish command after the target
1615 has stopped. In asynchronous mode, we wait for the target to stop
1616 in the call to poll or select in the event loop, so it is
1617 impossible to do all the stuff as part of the finish_command
1618 function itself. The only chance we have to complete this command
1619 is in fetch_inferior_event, which is called by the event loop as
1620 soon as it detects that the target has stopped. */
1622 struct finish_command_continuation_args
1624 /* The thread that as current when the command was executed. */
1626 struct breakpoint
*breakpoint
;
1627 struct symbol
*function
;
1631 finish_command_continuation (void *arg
, int err
)
1633 struct finish_command_continuation_args
*a
= arg
;
1637 struct thread_info
*tp
= NULL
;
1640 if (!ptid_equal (inferior_ptid
, null_ptid
)
1641 && target_has_execution
1642 && is_stopped (inferior_ptid
))
1644 tp
= inferior_thread ();
1645 bs
= tp
->control
.stop_bpstat
;
1648 if (bpstat_find_breakpoint (bs
, a
->breakpoint
) != NULL
1649 && a
->function
!= NULL
)
1651 struct type
*value_type
;
1653 value_type
= TYPE_TARGET_TYPE (SYMBOL_TYPE (a
->function
));
1655 internal_error (__FILE__
, __LINE__
,
1656 _("finish_command: function has no target type"));
1658 if (TYPE_CODE (value_type
) != TYPE_CODE_VOID
)
1660 volatile struct gdb_exception ex
;
1663 func
= read_var_value (a
->function
, get_current_frame ());
1664 TRY_CATCH (ex
, RETURN_MASK_ALL
)
1666 /* print_return_value can throw an exception in some
1667 circumstances. We need to catch this so that we still
1668 delete the breakpoint. */
1669 print_return_value (func
, value_type
);
1672 exception_print (gdb_stdout
, ex
);
1676 /* We suppress normal call of normal_stop observer and do it
1677 here so that the *stopped notification includes the return
1679 if (bs
!= NULL
&& tp
->control
.proceed_to_finish
)
1680 observer_notify_normal_stop (bs
, 1 /* print frame */);
1683 delete_breakpoint (a
->breakpoint
);
1684 delete_longjmp_breakpoint (a
->thread
);
1688 finish_command_continuation_free_arg (void *arg
)
1693 /* finish_backward -- helper function for finish_command. */
1696 finish_backward (struct symbol
*function
)
1698 struct symtab_and_line sal
;
1699 struct thread_info
*tp
= inferior_thread ();
1701 CORE_ADDR func_addr
;
1703 pc
= get_frame_pc (get_current_frame ());
1705 if (find_pc_partial_function (pc
, NULL
, &func_addr
, NULL
) == 0)
1706 error (_("Cannot find bounds of current function"));
1708 sal
= find_pc_line (func_addr
, 0);
1710 tp
->control
.proceed_to_finish
= 1;
1711 /* Special case: if we're sitting at the function entry point,
1712 then all we need to do is take a reverse singlestep. We
1713 don't need to set a breakpoint, and indeed it would do us
1716 Note that this can only happen at frame #0, since there's
1717 no way that a function up the stack can have a return address
1718 that's equal to its entry point. */
1722 struct frame_info
*frame
= get_selected_frame (NULL
);
1723 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
1724 struct symtab_and_line sr_sal
;
1726 /* Set a step-resume at the function's entry point. Once that's
1727 hit, we'll do one more step backwards. */
1730 sr_sal
.pspace
= get_frame_program_space (frame
);
1731 insert_step_resume_breakpoint_at_sal (gdbarch
,
1732 sr_sal
, null_frame_id
);
1734 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
1738 /* We're almost there -- we just need to back up by one more
1740 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1741 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 1);
1745 /* finish_forward -- helper function for finish_command. */
1748 finish_forward (struct symbol
*function
, struct frame_info
*frame
)
1750 struct frame_id frame_id
= get_frame_id (frame
);
1751 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
1752 struct symtab_and_line sal
;
1753 struct thread_info
*tp
= inferior_thread ();
1754 struct breakpoint
*breakpoint
;
1755 struct cleanup
*old_chain
;
1756 struct finish_command_continuation_args
*cargs
;
1757 int thread
= tp
->num
;
1759 sal
= find_pc_line (get_frame_pc (frame
), 0);
1760 sal
.pc
= get_frame_pc (frame
);
1762 breakpoint
= set_momentary_breakpoint (gdbarch
, sal
,
1763 get_stack_frame_id (frame
),
1766 /* set_momentary_breakpoint invalidates FRAME. */
1769 old_chain
= make_cleanup_delete_breakpoint (breakpoint
);
1771 set_longjmp_breakpoint (tp
, frame_id
);
1772 make_cleanup (delete_longjmp_breakpoint_cleanup
, &thread
);
1774 /* We want stop_registers, please... */
1775 tp
->control
.proceed_to_finish
= 1;
1776 cargs
= xmalloc (sizeof (*cargs
));
1778 cargs
->thread
= thread
;
1779 cargs
->breakpoint
= breakpoint
;
1780 cargs
->function
= function
;
1781 add_continuation (tp
, finish_command_continuation
, cargs
,
1782 finish_command_continuation_free_arg
);
1783 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
1785 discard_cleanups (old_chain
);
1786 if (!target_can_async_p ())
1787 do_all_continuations (0);
1790 /* "finish": Set a temporary breakpoint at the place the selected
1791 frame will return to, then continue. */
1794 finish_command (char *arg
, int from_tty
)
1796 struct frame_info
*frame
;
1797 struct symbol
*function
;
1799 struct cleanup
*args_chain
;
1802 ensure_not_tfind_mode ();
1803 ensure_valid_thread ();
1804 ensure_not_running ();
1806 /* Find out whether we must run in the background. */
1807 arg
= strip_bg_char (arg
, &async_exec
);
1808 args_chain
= make_cleanup (xfree
, arg
);
1810 prepare_execution_command (¤t_target
, async_exec
);
1813 error (_("The \"finish\" command does not take any arguments."));
1815 /* Done with ARGS. */
1816 do_cleanups (args_chain
);
1818 frame
= get_prev_frame (get_selected_frame (_("No selected frame.")));
1820 error (_("\"finish\" not meaningful in the outermost frame."));
1822 clear_proceed_status (0);
1824 /* Finishing from an inline frame is completely different. We don't
1825 try to show the "return value" - no way to locate it. So we do
1826 not need a completion. */
1827 if (get_frame_type (get_selected_frame (_("No selected frame.")))
1830 /* Claim we are stepping in the calling frame. An empty step
1831 range means that we will stop once we aren't in a function
1832 called by that frame. We don't use the magic "1" value for
1833 step_range_end, because then infrun will think this is nexti,
1834 and not step over the rest of this inlined function call. */
1835 struct thread_info
*tp
= inferior_thread ();
1836 struct symtab_and_line empty_sal
;
1838 init_sal (&empty_sal
);
1839 set_step_info (frame
, empty_sal
);
1840 tp
->control
.step_range_start
= get_frame_pc (frame
);
1841 tp
->control
.step_range_end
= tp
->control
.step_range_start
;
1842 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1844 /* Print info on the selected frame, including level number but not
1848 printf_filtered (_("Run till exit from "));
1849 print_stack_frame (get_selected_frame (NULL
), 1, LOCATION
, 0);
1852 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 1);
1856 /* Ignore TAILCALL_FRAME type frames, they were executed already before
1857 entering THISFRAME. */
1858 while (get_frame_type (frame
) == TAILCALL_FRAME
)
1859 frame
= get_prev_frame (frame
);
1861 /* Find the function we will return from. */
1863 function
= find_pc_function (get_frame_pc (get_selected_frame (NULL
)));
1865 /* Print info on the selected frame, including level number but not
1869 if (execution_direction
== EXEC_REVERSE
)
1870 printf_filtered (_("Run back to call of "));
1872 printf_filtered (_("Run till exit from "));
1874 print_stack_frame (get_selected_frame (NULL
), 1, LOCATION
, 0);
1877 if (execution_direction
== EXEC_REVERSE
)
1878 finish_backward (function
);
1880 finish_forward (function
, frame
);
1885 program_info (char *args
, int from_tty
)
1889 struct thread_info
*tp
;
1892 if (!target_has_execution
)
1894 printf_filtered (_("The program being debugged is not being run.\n"));
1899 ptid
= inferior_ptid
;
1902 struct target_waitstatus ws
;
1904 get_last_target_status (&ptid
, &ws
);
1907 if (ptid_equal (ptid
, null_ptid
) || is_exited (ptid
))
1908 error (_("Invalid selected thread."));
1909 else if (is_running (ptid
))
1910 error (_("Selected thread is running."));
1912 tp
= find_thread_ptid (ptid
);
1913 bs
= tp
->control
.stop_bpstat
;
1914 stat
= bpstat_num (&bs
, &num
);
1916 target_files_info ();
1917 printf_filtered (_("Program stopped at %s.\n"),
1918 paddress (target_gdbarch (), stop_pc
));
1919 if (tp
->control
.stop_step
)
1920 printf_filtered (_("It stopped after being stepped.\n"));
1923 /* There may be several breakpoints in the same place, so this
1924 isn't as strange as it seems. */
1929 printf_filtered (_("It stopped at a breakpoint "
1930 "that has since been deleted.\n"));
1933 printf_filtered (_("It stopped at breakpoint %d.\n"), num
);
1934 stat
= bpstat_num (&bs
, &num
);
1937 else if (tp
->suspend
.stop_signal
!= GDB_SIGNAL_0
)
1939 printf_filtered (_("It stopped with signal %s, %s.\n"),
1940 gdb_signal_to_name (tp
->suspend
.stop_signal
),
1941 gdb_signal_to_string (tp
->suspend
.stop_signal
));
1946 printf_filtered (_("Type \"info stack\" or \"info "
1947 "registers\" for more information.\n"));
1952 environment_info (char *var
, int from_tty
)
1956 char *val
= get_in_environ (current_inferior ()->environment
, var
);
1960 puts_filtered (var
);
1961 puts_filtered (" = ");
1962 puts_filtered (val
);
1963 puts_filtered ("\n");
1967 puts_filtered ("Environment variable \"");
1968 puts_filtered (var
);
1969 puts_filtered ("\" not defined.\n");
1974 char **vector
= environ_vector (current_inferior ()->environment
);
1978 puts_filtered (*vector
++);
1979 puts_filtered ("\n");
1985 set_environment_command (char *arg
, int from_tty
)
1987 char *p
, *val
, *var
;
1991 error_no_arg (_("environment variable and value"));
1993 /* Find seperation between variable name and value. */
1994 p
= (char *) strchr (arg
, '=');
1995 val
= (char *) strchr (arg
, ' ');
1997 if (p
!= 0 && val
!= 0)
1999 /* We have both a space and an equals. If the space is before the
2000 equals, walk forward over the spaces til we see a nonspace
2001 (possibly the equals). */
2006 /* Now if the = is after the char following the spaces,
2007 take the char following the spaces. */
2011 else if (val
!= 0 && p
== 0)
2015 error_no_arg (_("environment variable to set"));
2017 if (p
== 0 || p
[1] == 0)
2021 p
= arg
+ strlen (arg
); /* So that savestring below will work. */
2025 /* Not setting variable value to null. */
2027 while (*val
== ' ' || *val
== '\t')
2031 while (p
!= arg
&& (p
[-1] == ' ' || p
[-1] == '\t'))
2034 var
= savestring (arg
, p
- arg
);
2037 printf_filtered (_("Setting environment variable "
2038 "\"%s\" to null value.\n"),
2040 set_in_environ (current_inferior ()->environment
, var
, "");
2043 set_in_environ (current_inferior ()->environment
, var
, val
);
2048 unset_environment_command (char *var
, int from_tty
)
2052 /* If there is no argument, delete all environment variables.
2053 Ask for confirmation if reading from the terminal. */
2054 if (!from_tty
|| query (_("Delete all environment variables? ")))
2056 free_environ (current_inferior ()->environment
);
2057 current_inferior ()->environment
= make_environ ();
2061 unset_in_environ (current_inferior ()->environment
, var
);
2064 /* Handle the execution path (PATH variable). */
2066 static const char path_var_name
[] = "PATH";
2069 path_info (char *args
, int from_tty
)
2071 puts_filtered ("Executable and object file path: ");
2072 puts_filtered (get_in_environ (current_inferior ()->environment
,
2074 puts_filtered ("\n");
2077 /* Add zero or more directories to the front of the execution path. */
2080 path_command (char *dirname
, int from_tty
)
2086 env
= get_in_environ (current_inferior ()->environment
, path_var_name
);
2087 /* Can be null if path is not set. */
2090 exec_path
= xstrdup (env
);
2091 mod_path (dirname
, &exec_path
);
2092 set_in_environ (current_inferior ()->environment
, path_var_name
, exec_path
);
2095 path_info ((char *) NULL
, from_tty
);
2099 /* Print out the register NAME with value VAL, to FILE, in the default
2103 default_print_one_register_info (struct ui_file
*file
,
2107 struct type
*regtype
= value_type (val
);
2108 int print_raw_format
;
2110 fputs_filtered (name
, file
);
2111 print_spaces_filtered (15 - strlen (name
), file
);
2113 print_raw_format
= (value_entirely_available (val
)
2114 && !value_optimized_out (val
));
2116 /* If virtual format is floating, print it that way, and in raw
2118 if (TYPE_CODE (regtype
) == TYPE_CODE_FLT
2119 || TYPE_CODE (regtype
) == TYPE_CODE_DECFLOAT
)
2122 struct value_print_options opts
;
2123 const gdb_byte
*valaddr
= value_contents_for_printing (val
);
2124 enum bfd_endian byte_order
= gdbarch_byte_order (get_type_arch (regtype
));
2126 get_user_print_options (&opts
);
2130 value_contents_for_printing (val
),
2131 value_embedded_offset (val
), 0,
2132 file
, 0, val
, &opts
, current_language
);
2134 if (print_raw_format
)
2136 fprintf_filtered (file
, "\t(raw ");
2137 print_hex_chars (file
, valaddr
, TYPE_LENGTH (regtype
), byte_order
);
2138 fprintf_filtered (file
, ")");
2143 struct value_print_options opts
;
2145 /* Print the register in hex. */
2146 get_formatted_print_options (&opts
, 'x');
2149 value_contents_for_printing (val
),
2150 value_embedded_offset (val
), 0,
2151 file
, 0, val
, &opts
, current_language
);
2152 /* If not a vector register, print it also according to its
2154 if (print_raw_format
&& TYPE_VECTOR (regtype
) == 0)
2156 get_user_print_options (&opts
);
2158 fprintf_filtered (file
, "\t");
2160 value_contents_for_printing (val
),
2161 value_embedded_offset (val
), 0,
2162 file
, 0, val
, &opts
, current_language
);
2166 fprintf_filtered (file
, "\n");
2169 /* Print out the machine register regnum. If regnum is -1, print all
2170 registers (print_all == 1) or all non-float and non-vector
2171 registers (print_all == 0).
2173 For most machines, having all_registers_info() print the
2174 register(s) one per line is good enough. If a different format is
2175 required, (eg, for MIPS or Pyramid 90x, which both have lots of
2176 regs), or there is an existing convention for showing all the
2177 registers, define the architecture method PRINT_REGISTERS_INFO to
2178 provide that format. */
2181 default_print_registers_info (struct gdbarch
*gdbarch
,
2182 struct ui_file
*file
,
2183 struct frame_info
*frame
,
2184 int regnum
, int print_all
)
2187 const int numregs
= gdbarch_num_regs (gdbarch
)
2188 + gdbarch_num_pseudo_regs (gdbarch
);
2190 for (i
= 0; i
< numregs
; i
++)
2192 /* Decide between printing all regs, non-float / vector regs, or
2198 if (!gdbarch_register_reggroup_p (gdbarch
, i
, all_reggroup
))
2203 if (!gdbarch_register_reggroup_p (gdbarch
, i
, general_reggroup
))
2213 /* If the register name is empty, it is undefined for this
2214 processor, so don't display anything. */
2215 if (gdbarch_register_name (gdbarch
, i
) == NULL
2216 || *(gdbarch_register_name (gdbarch
, i
)) == '\0')
2219 default_print_one_register_info (file
,
2220 gdbarch_register_name (gdbarch
, i
),
2221 value_of_register (i
, frame
));
2226 registers_info (char *addr_exp
, int fpregs
)
2228 struct frame_info
*frame
;
2229 struct gdbarch
*gdbarch
;
2231 if (!target_has_registers
)
2232 error (_("The program has no registers now."));
2233 frame
= get_selected_frame (NULL
);
2234 gdbarch
= get_frame_arch (frame
);
2238 gdbarch_print_registers_info (gdbarch
, gdb_stdout
,
2243 while (*addr_exp
!= '\0')
2248 /* Skip leading white space. */
2249 addr_exp
= skip_spaces (addr_exp
);
2251 /* Discard any leading ``$''. Check that there is something
2252 resembling a register following it. */
2253 if (addr_exp
[0] == '$')
2255 if (isspace ((*addr_exp
)) || (*addr_exp
) == '\0')
2256 error (_("Missing register name"));
2258 /* Find the start/end of this register name/num/group. */
2260 while ((*addr_exp
) != '\0' && !isspace ((*addr_exp
)))
2264 /* Figure out what we've found and display it. */
2266 /* A register name? */
2268 int regnum
= user_reg_map_name_to_regnum (gdbarch
, start
, end
- start
);
2272 /* User registers lie completely outside of the range of
2273 normal registers. Catch them early so that the target
2275 if (regnum
>= gdbarch_num_regs (gdbarch
)
2276 + gdbarch_num_pseudo_regs (gdbarch
))
2278 struct value
*regval
= value_of_user_reg (regnum
, frame
);
2279 const char *regname
= user_reg_map_regnum_to_name (gdbarch
,
2282 /* Print in the same fashion
2283 gdbarch_print_registers_info's default
2284 implementation prints. */
2285 default_print_one_register_info (gdb_stdout
,
2290 gdbarch_print_registers_info (gdbarch
, gdb_stdout
,
2291 frame
, regnum
, fpregs
);
2296 /* A register group? */
2298 struct reggroup
*group
;
2300 for (group
= reggroup_next (gdbarch
, NULL
);
2302 group
= reggroup_next (gdbarch
, group
))
2304 /* Don't bother with a length check. Should the user
2305 enter a short register group name, go with the first
2306 group that matches. */
2307 if (strncmp (start
, reggroup_name (group
), end
- start
) == 0)
2315 regnum
< gdbarch_num_regs (gdbarch
)
2316 + gdbarch_num_pseudo_regs (gdbarch
);
2319 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, group
))
2320 gdbarch_print_registers_info (gdbarch
,
2328 /* Nothing matched. */
2329 error (_("Invalid register `%.*s'"), (int) (end
- start
), start
);
2334 all_registers_info (char *addr_exp
, int from_tty
)
2336 registers_info (addr_exp
, 1);
2340 nofp_registers_info (char *addr_exp
, int from_tty
)
2342 registers_info (addr_exp
, 0);
2346 print_vector_info (struct ui_file
*file
,
2347 struct frame_info
*frame
, const char *args
)
2349 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
2351 if (gdbarch_print_vector_info_p (gdbarch
))
2352 gdbarch_print_vector_info (gdbarch
, file
, frame
, args
);
2356 int printed_something
= 0;
2359 regnum
< gdbarch_num_regs (gdbarch
)
2360 + gdbarch_num_pseudo_regs (gdbarch
);
2363 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, vector_reggroup
))
2365 printed_something
= 1;
2366 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
2369 if (!printed_something
)
2370 fprintf_filtered (file
, "No vector information\n");
2375 vector_info (char *args
, int from_tty
)
2377 if (!target_has_registers
)
2378 error (_("The program has no registers now."));
2380 print_vector_info (gdb_stdout
, get_selected_frame (NULL
), args
);
2383 /* Kill the inferior process. Make us have no inferior. */
2386 kill_command (char *arg
, int from_tty
)
2388 /* FIXME: This should not really be inferior_ptid (or target_has_execution).
2389 It should be a distinct flag that indicates that a target is active, cuz
2390 some targets don't have processes! */
2392 if (ptid_equal (inferior_ptid
, null_ptid
))
2393 error (_("The program is not being run."));
2394 if (!query (_("Kill the program being debugged? ")))
2395 error (_("Not confirmed."));
2398 /* If we still have other inferiors to debug, then don't mess with
2399 with their threads. */
2400 if (!have_inferiors ())
2402 init_thread_list (); /* Destroy thread info. */
2404 /* Killing off the inferior can leave us with a core file. If
2405 so, print the state we are left in. */
2406 if (target_has_stack
)
2408 printf_filtered (_("In %s,\n"), target_longname
);
2409 print_stack_frame (get_selected_frame (NULL
), 1, SRC_AND_LOC
, 1);
2412 bfd_cache_close_all ();
2415 /* Used in `attach&' command. ARG is a point to an integer
2416 representing a process id. Proceed threads of this process iff
2417 they stopped due to debugger request, and when they did, they
2418 reported a clean stop (GDB_SIGNAL_0). Do not proceed threads
2419 that have been explicitly been told to stop. */
2422 proceed_after_attach_callback (struct thread_info
*thread
,
2425 int pid
= * (int *) arg
;
2427 if (ptid_get_pid (thread
->ptid
) == pid
2428 && !is_exited (thread
->ptid
)
2429 && !is_executing (thread
->ptid
)
2430 && !thread
->stop_requested
2431 && thread
->suspend
.stop_signal
== GDB_SIGNAL_0
)
2433 switch_to_thread (thread
->ptid
);
2434 clear_proceed_status (0);
2435 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
2442 proceed_after_attach (int pid
)
2444 /* Don't error out if the current thread is running, because
2445 there may be other stopped threads. */
2446 struct cleanup
*old_chain
;
2448 /* Backup current thread and selected frame. */
2449 old_chain
= make_cleanup_restore_current_thread ();
2451 iterate_over_threads (proceed_after_attach_callback
, &pid
);
2453 /* Restore selected ptid. */
2454 do_cleanups (old_chain
);
2457 /* attach_command --
2458 takes a program started up outside of gdb and ``attaches'' to it.
2459 This stops it cold in its tracks and allows us to start debugging it.
2460 and wait for the trace-trap that results from attaching. */
2463 attach_command_post_wait (char *args
, int from_tty
, int async_exec
)
2466 char *full_exec_path
= NULL
;
2467 struct inferior
*inferior
;
2469 inferior
= current_inferior ();
2470 inferior
->control
.stop_soon
= NO_STOP_QUIETLY
;
2472 /* If no exec file is yet known, try to determine it from the
2474 exec_file
= (char *) get_exec_file (0);
2477 exec_file
= target_pid_to_exec_file (ptid_get_pid (inferior_ptid
));
2480 /* It's possible we don't have a full path, but rather just a
2481 filename. Some targets, such as HP-UX, don't provide the
2484 Attempt to qualify the filename against the source path.
2485 (If that fails, we'll just fall back on the original
2486 filename. Not much more we can do...) */
2488 if (!source_full_path_of (exec_file
, &full_exec_path
))
2489 full_exec_path
= xstrdup (exec_file
);
2491 exec_file_attach (full_exec_path
, from_tty
);
2492 symbol_file_add_main (full_exec_path
, from_tty
);
2497 reopen_exec_file ();
2501 /* Take any necessary post-attaching actions for this platform. */
2502 target_post_attach (ptid_get_pid (inferior_ptid
));
2504 post_create_inferior (¤t_target
, from_tty
);
2508 /* The user requested an `attach&', so be sure to leave threads
2509 that didn't get a signal running. */
2511 /* Immediatelly resume all suspended threads of this inferior,
2512 and this inferior only. This should have no effect on
2513 already running threads. If a thread has been stopped with a
2514 signal, leave it be. */
2516 proceed_after_attach (inferior
->pid
);
2519 if (inferior_thread ()->suspend
.stop_signal
== GDB_SIGNAL_0
)
2521 clear_proceed_status (0);
2522 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
2528 /* The user requested a plain `attach', so be sure to leave
2529 the inferior stopped. */
2531 if (target_can_async_p ())
2532 async_enable_stdin ();
2534 /* At least the current thread is already stopped. */
2536 /* In all-stop, by definition, all threads have to be already
2537 stopped at this point. In non-stop, however, although the
2538 selected thread is stopped, others may still be executing.
2539 Be sure to explicitly stop all threads of the process. This
2540 should have no effect on already stopped threads. */
2542 target_stop (pid_to_ptid (inferior
->pid
));
2544 /* Tell the user/frontend where we're stopped. */
2546 if (deprecated_attach_hook
)
2547 deprecated_attach_hook ();
2551 struct attach_command_continuation_args
2559 attach_command_continuation (void *args
, int err
)
2561 struct attach_command_continuation_args
*a
= args
;
2566 attach_command_post_wait (a
->args
, a
->from_tty
, a
->async_exec
);
2570 attach_command_continuation_free_args (void *args
)
2572 struct attach_command_continuation_args
*a
= args
;
2579 attach_command (char *args
, int from_tty
)
2582 struct cleanup
*args_chain
;
2583 struct target_ops
*attach_target
;
2585 dont_repeat (); /* Not for the faint of heart */
2587 if (gdbarch_has_global_solist (target_gdbarch ()))
2588 /* Don't complain if all processes share the same symbol
2591 else if (target_has_execution
)
2593 if (query (_("A program is being debugged already. Kill it? ")))
2596 error (_("Not killed."));
2599 /* Clean up any leftovers from other runs. Some other things from
2600 this function should probably be moved into target_pre_inferior. */
2601 target_pre_inferior (from_tty
);
2603 args
= strip_bg_char (args
, &async_exec
);
2604 args_chain
= make_cleanup (xfree
, args
);
2606 attach_target
= find_attach_target ();
2608 prepare_execution_command (attach_target
, async_exec
);
2610 if (non_stop
&& !attach_target
->to_supports_non_stop (attach_target
))
2611 error (_("Cannot attach to this target in non-stop mode"));
2613 attach_target
->to_attach (attach_target
, args
, from_tty
);
2614 /* to_attach should push the target, so after this point we
2615 shouldn't refer to attach_target again. */
2616 attach_target
= NULL
;
2618 /* Done with ARGS. */
2619 do_cleanups (args_chain
);
2621 /* Set up the "saved terminal modes" of the inferior
2622 based on what modes we are starting it with. */
2623 target_terminal_init ();
2625 /* Install inferior's terminal modes. This may look like a no-op,
2626 as we've just saved them above, however, this does more than
2627 restore terminal settings:
2629 - installs a SIGINT handler that forwards SIGINT to the inferior.
2630 Otherwise a Ctrl-C pressed just while waiting for the initial
2631 stop would end up as a spurious Quit.
2633 - removes stdin from the event loop, which we need if attaching
2634 in the foreground, otherwise on targets that report an initial
2635 stop on attach (which are most) we'd process input/commands
2636 while we're in the event loop waiting for that stop. That is,
2637 before the attach continuation runs and the command is really
2639 target_terminal_inferior ();
2641 /* Set up execution context to know that we should return from
2642 wait_for_inferior as soon as the target reports a stop. */
2643 init_wait_for_inferior ();
2644 clear_proceed_status (0);
2648 /* If we find that the current thread isn't stopped, explicitly
2649 do so now, because we're going to install breakpoints and
2653 /* The user requested an `attach&'; stop just one thread. */
2654 target_stop (inferior_ptid
);
2656 /* The user requested an `attach', so stop all threads of this
2658 target_stop (pid_to_ptid (ptid_get_pid (inferior_ptid
)));
2661 /* Some system don't generate traps when attaching to inferior.
2662 E.g. Mach 3 or GNU hurd. */
2663 if (!target_attach_no_wait
)
2665 struct inferior
*inferior
= current_inferior ();
2667 /* Careful here. See comments in inferior.h. Basically some
2668 OSes don't ignore SIGSTOPs on continue requests anymore. We
2669 need a way for handle_inferior_event to reset the stop_signal
2670 variable after an attach, and this is what
2671 STOP_QUIETLY_NO_SIGSTOP is for. */
2672 inferior
->control
.stop_soon
= STOP_QUIETLY_NO_SIGSTOP
;
2674 if (target_can_async_p ())
2676 /* sync_execution mode. Wait for stop. */
2677 struct attach_command_continuation_args
*a
;
2679 a
= xmalloc (sizeof (*a
));
2680 a
->args
= xstrdup (args
);
2681 a
->from_tty
= from_tty
;
2682 a
->async_exec
= async_exec
;
2683 add_inferior_continuation (attach_command_continuation
, a
,
2684 attach_command_continuation_free_args
);
2688 wait_for_inferior ();
2691 attach_command_post_wait (args
, from_tty
, async_exec
);
2694 /* We had just found out that the target was already attached to an
2695 inferior. PTID points at a thread of this new inferior, that is
2696 the most likely to be stopped right now, but not necessarily so.
2697 The new inferior is assumed to be already added to the inferior
2698 list at this point. If LEAVE_RUNNING, then leave the threads of
2699 this inferior running, except those we've explicitly seen reported
2703 notice_new_inferior (ptid_t ptid
, int leave_running
, int from_tty
)
2705 struct cleanup
* old_chain
;
2708 old_chain
= make_cleanup (null_cleanup
, NULL
);
2710 /* If in non-stop, leave threads as running as they were. If
2711 they're stopped for some reason other than us telling it to, the
2712 target reports a signal != GDB_SIGNAL_0. We don't try to
2713 resume threads with such a stop signal. */
2714 async_exec
= non_stop
;
2716 if (!ptid_equal (inferior_ptid
, null_ptid
))
2717 make_cleanup_restore_current_thread ();
2719 switch_to_thread (ptid
);
2721 /* When we "notice" a new inferior we need to do all the things we
2722 would normally do if we had just attached to it. */
2724 if (is_executing (inferior_ptid
))
2726 struct inferior
*inferior
= current_inferior ();
2728 /* We're going to install breakpoints, and poke at memory,
2729 ensure that the inferior is stopped for a moment while we do
2731 target_stop (inferior_ptid
);
2733 inferior
->control
.stop_soon
= STOP_QUIETLY_REMOTE
;
2735 /* Wait for stop before proceeding. */
2736 if (target_can_async_p ())
2738 struct attach_command_continuation_args
*a
;
2740 a
= xmalloc (sizeof (*a
));
2741 a
->args
= xstrdup ("");
2742 a
->from_tty
= from_tty
;
2743 a
->async_exec
= async_exec
;
2744 add_inferior_continuation (attach_command_continuation
, a
,
2745 attach_command_continuation_free_args
);
2747 do_cleanups (old_chain
);
2751 wait_for_inferior ();
2754 async_exec
= leave_running
;
2755 attach_command_post_wait ("" /* args */, from_tty
, async_exec
);
2757 do_cleanups (old_chain
);
2762 * takes a program previously attached to and detaches it.
2763 * The program resumes execution and will no longer stop
2764 * on signals, etc. We better not have left any breakpoints
2765 * in the program or it'll die when it hits one. For this
2766 * to work, it may be necessary for the process to have been
2767 * previously attached. It *might* work if the program was
2768 * started via the normal ptrace (PTRACE_TRACEME).
2772 detach_command (char *args
, int from_tty
)
2774 dont_repeat (); /* Not for the faint of heart. */
2776 if (ptid_equal (inferior_ptid
, null_ptid
))
2777 error (_("The program is not being run."));
2779 query_if_trace_running (from_tty
);
2781 disconnect_tracing ();
2783 target_detach (args
, from_tty
);
2785 /* If the solist is global across inferiors, don't clear it when we
2786 detach from a single inferior. */
2787 if (!gdbarch_has_global_solist (target_gdbarch ()))
2788 no_shared_libraries (NULL
, from_tty
);
2790 /* If we still have inferiors to debug, then don't mess with their
2792 if (!have_inferiors ())
2793 init_thread_list ();
2795 if (deprecated_detach_hook
)
2796 deprecated_detach_hook ();
2799 /* Disconnect from the current target without resuming it (leaving it
2800 waiting for a debugger).
2802 We'd better not have left any breakpoints in the program or the
2803 next debugger will get confused. Currently only supported for some
2804 remote targets, since the normal attach mechanisms don't work on
2805 stopped processes on some native platforms (e.g. GNU/Linux). */
2808 disconnect_command (char *args
, int from_tty
)
2810 dont_repeat (); /* Not for the faint of heart. */
2811 query_if_trace_running (from_tty
);
2812 disconnect_tracing ();
2813 target_disconnect (args
, from_tty
);
2814 no_shared_libraries (NULL
, from_tty
);
2815 init_thread_list ();
2816 if (deprecated_detach_hook
)
2817 deprecated_detach_hook ();
2821 interrupt_target_1 (int all_threads
)
2826 ptid
= minus_one_ptid
;
2828 ptid
= inferior_ptid
;
2831 /* Tag the thread as having been explicitly requested to stop, so
2832 other parts of gdb know not to resume this thread automatically,
2833 if it was stopped due to an internal event. Limit this to
2834 non-stop mode, as when debugging a multi-threaded application in
2835 all-stop mode, we will only get one stop event --- it's undefined
2836 which thread will report the event. */
2838 set_stop_requested (ptid
, 1);
2842 Stop the execution of the target while running in async mode, in
2843 the backgound. In all-stop, stop the whole process. In non-stop
2844 mode, stop the current thread only by default, or stop all threads
2845 if the `-a' switch is used. */
2848 interrupt_command (char *args
, int from_tty
)
2850 if (target_can_async_p ())
2852 int all_threads
= 0;
2854 dont_repeat (); /* Not for the faint of heart. */
2857 && strncmp (args
, "-a", sizeof ("-a") - 1) == 0)
2860 if (!non_stop
&& all_threads
)
2861 error (_("-a is meaningless in all-stop mode."));
2863 interrupt_target_1 (all_threads
);
2868 print_float_info (struct ui_file
*file
,
2869 struct frame_info
*frame
, const char *args
)
2871 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
2873 if (gdbarch_print_float_info_p (gdbarch
))
2874 gdbarch_print_float_info (gdbarch
, file
, frame
, args
);
2878 int printed_something
= 0;
2881 regnum
< gdbarch_num_regs (gdbarch
)
2882 + gdbarch_num_pseudo_regs (gdbarch
);
2885 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, float_reggroup
))
2887 printed_something
= 1;
2888 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
2891 if (!printed_something
)
2892 fprintf_filtered (file
, "No floating-point info "
2893 "available for this processor.\n");
2898 float_info (char *args
, int from_tty
)
2900 if (!target_has_registers
)
2901 error (_("The program has no registers now."));
2903 print_float_info (gdb_stdout
, get_selected_frame (NULL
), args
);
2907 unset_command (char *args
, int from_tty
)
2909 printf_filtered (_("\"unset\" must be followed by the "
2910 "name of an unset subcommand.\n"));
2911 help_list (unsetlist
, "unset ", all_commands
, gdb_stdout
);
2914 /* Implement `info proc' family of commands. */
2917 info_proc_cmd_1 (char *args
, enum info_proc_what what
, int from_tty
)
2919 struct gdbarch
*gdbarch
= get_current_arch ();
2921 if (!target_info_proc (args
, what
))
2923 if (gdbarch_info_proc_p (gdbarch
))
2924 gdbarch_info_proc (gdbarch
, args
, what
);
2926 error (_("Not supported on this target."));
2930 /* Implement `info proc' when given without any futher parameters. */
2933 info_proc_cmd (char *args
, int from_tty
)
2935 info_proc_cmd_1 (args
, IP_MINIMAL
, from_tty
);
2938 /* Implement `info proc mappings'. */
2941 info_proc_cmd_mappings (char *args
, int from_tty
)
2943 info_proc_cmd_1 (args
, IP_MAPPINGS
, from_tty
);
2946 /* Implement `info proc stat'. */
2949 info_proc_cmd_stat (char *args
, int from_tty
)
2951 info_proc_cmd_1 (args
, IP_STAT
, from_tty
);
2954 /* Implement `info proc status'. */
2957 info_proc_cmd_status (char *args
, int from_tty
)
2959 info_proc_cmd_1 (args
, IP_STATUS
, from_tty
);
2962 /* Implement `info proc cwd'. */
2965 info_proc_cmd_cwd (char *args
, int from_tty
)
2967 info_proc_cmd_1 (args
, IP_CWD
, from_tty
);
2970 /* Implement `info proc cmdline'. */
2973 info_proc_cmd_cmdline (char *args
, int from_tty
)
2975 info_proc_cmd_1 (args
, IP_CMDLINE
, from_tty
);
2978 /* Implement `info proc exe'. */
2981 info_proc_cmd_exe (char *args
, int from_tty
)
2983 info_proc_cmd_1 (args
, IP_EXE
, from_tty
);
2986 /* Implement `info proc all'. */
2989 info_proc_cmd_all (char *args
, int from_tty
)
2991 info_proc_cmd_1 (args
, IP_ALL
, from_tty
);
2995 _initialize_infcmd (void)
2997 static struct cmd_list_element
*info_proc_cmdlist
;
2998 struct cmd_list_element
*c
= NULL
;
2999 const char *cmd_name
;
3001 /* Add the filename of the terminal connected to inferior I/O. */
3002 add_setshow_filename_cmd ("inferior-tty", class_run
,
3003 &inferior_io_terminal_scratch
, _("\
3004 Set terminal for future runs of program being debugged."), _("\
3005 Show terminal for future runs of program being debugged."), _("\
3006 Usage: set inferior-tty /dev/pts/1"),
3007 set_inferior_tty_command
,
3008 show_inferior_tty_command
,
3009 &setlist
, &showlist
);
3010 add_com_alias ("tty", "set inferior-tty", class_alias
, 0);
3013 add_setshow_string_noescape_cmd (cmd_name
, class_run
,
3014 &inferior_args_scratch
, _("\
3015 Set argument list to give program being debugged when it is started."), _("\
3016 Show argument list to give program being debugged when it is started."), _("\
3017 Follow this command with any number of args, to be passed to the program."),
3020 &setlist
, &showlist
);
3021 c
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
3022 gdb_assert (c
!= NULL
);
3023 set_cmd_completer (c
, filename_completer
);
3025 c
= add_cmd ("environment", no_class
, environment_info
, _("\
3026 The environment to give the program, or one variable's value.\n\
3027 With an argument VAR, prints the value of environment variable VAR to\n\
3028 give the program being debugged. With no arguments, prints the entire\n\
3029 environment to be given to the program."), &showlist
);
3030 set_cmd_completer (c
, noop_completer
);
3032 add_prefix_cmd ("unset", no_class
, unset_command
,
3033 _("Complement to certain \"set\" commands."),
3034 &unsetlist
, "unset ", 0, &cmdlist
);
3036 c
= add_cmd ("environment", class_run
, unset_environment_command
, _("\
3037 Cancel environment variable VAR for the program.\n\
3038 This does not affect the program until the next \"run\" command."),
3040 set_cmd_completer (c
, noop_completer
);
3042 c
= add_cmd ("environment", class_run
, set_environment_command
, _("\
3043 Set environment variable value to give the program.\n\
3044 Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\
3045 VALUES of environment variables are uninterpreted strings.\n\
3046 This does not affect the program until the next \"run\" command."),
3048 set_cmd_completer (c
, noop_completer
);
3050 c
= add_com ("path", class_files
, path_command
, _("\
3051 Add directory DIR(s) to beginning of search path for object files.\n\
3052 $cwd in the path means the current working directory.\n\
3053 This path is equivalent to the $PATH shell variable. It is a list of\n\
3054 directories, separated by colons. These directories are searched to find\n\
3055 fully linked executable files and separately compiled object files as \
3057 set_cmd_completer (c
, filename_completer
);
3059 c
= add_cmd ("paths", no_class
, path_info
, _("\
3060 Current search path for finding object files.\n\
3061 $cwd in the path means the current working directory.\n\
3062 This path is equivalent to the $PATH shell variable. It is a list of\n\
3063 directories, separated by colons. These directories are searched to find\n\
3064 fully linked executable files and separately compiled object files as \
3067 set_cmd_completer (c
, noop_completer
);
3069 add_prefix_cmd ("kill", class_run
, kill_command
,
3070 _("Kill execution of program being debugged."),
3071 &killlist
, "kill ", 0, &cmdlist
);
3073 add_com ("attach", class_run
, attach_command
, _("\
3074 Attach to a process or file outside of GDB.\n\
3075 This command attaches to another target, of the same type as your last\n\
3076 \"target\" command (\"info files\" will show your target stack).\n\
3077 The command may take as argument a process id or a device file.\n\
3078 For a process id, you must have permission to send the process a signal,\n\
3079 and it must have the same effective uid as the debugger.\n\
3080 When using \"attach\" with a process id, the debugger finds the\n\
3081 program running in the process, looking first in the current working\n\
3082 directory, or (if not found there) using the source file search path\n\
3083 (see the \"directory\" command). You can also use the \"file\" command\n\
3084 to specify the program, and to load its symbol table."));
3086 add_prefix_cmd ("detach", class_run
, detach_command
, _("\
3087 Detach a process or file previously attached.\n\
3088 If a process, it is no longer traced, and it continues its execution. If\n\
3089 you were debugging a file, the file is closed and gdb no longer accesses it."),
3090 &detachlist
, "detach ", 0, &cmdlist
);
3092 add_com ("disconnect", class_run
, disconnect_command
, _("\
3093 Disconnect from a target.\n\
3094 The target will wait for another debugger to connect. Not available for\n\
3097 c
= add_com ("signal", class_run
, signal_command
, _("\
3098 Continue program with the specified signal.\n\
3099 Usage: signal SIGNAL\n\
3100 The SIGNAL argument is processed the same as the handle command.\n\
3102 An argument of \"0\" means continue the program without sending it a signal.\n\
3103 This is useful in cases where the program stopped because of a signal,\n\
3104 and you want to resume the program while discarding the signal.\n\
3106 In a multi-threaded program the signal is delivered to, or discarded from,\n\
3107 the current thread only."));
3108 set_cmd_completer (c
, signal_completer
);
3110 c
= add_com ("queue-signal", class_run
, queue_signal_command
, _("\
3111 Queue a signal to be delivered to the current thread when it is resumed.\n\
3112 Usage: queue-signal SIGNAL\n\
3113 The SIGNAL argument is processed the same as the handle command.\n\
3114 It is an error if the handling state of SIGNAL is \"nopass\".\n\
3116 An argument of \"0\" means remove any currently queued signal from\n\
3117 the current thread. This is useful in cases where the program stopped\n\
3118 because of a signal, and you want to resume it while discarding the signal.\n\
3120 In a multi-threaded program the signal is queued with, or discarded from,\n\
3121 the current thread only."));
3122 set_cmd_completer (c
, signal_completer
);
3124 add_com ("stepi", class_run
, stepi_command
, _("\
3125 Step one instruction exactly.\n\
3127 Argument N means step N times (or till program stops for another \
3129 add_com_alias ("si", "stepi", class_alias
, 0);
3131 add_com ("nexti", class_run
, nexti_command
, _("\
3132 Step one instruction, but proceed through subroutine calls.\n\
3134 Argument N means step N times (or till program stops for another \
3136 add_com_alias ("ni", "nexti", class_alias
, 0);
3138 add_com ("finish", class_run
, finish_command
, _("\
3139 Execute until selected stack frame returns.\n\
3141 Upon return, the value returned is printed and put in the value history."));
3142 add_com_alias ("fin", "finish", class_run
, 1);
3144 add_com ("next", class_run
, next_command
, _("\
3145 Step program, proceeding through subroutine calls.\n\
3147 Unlike \"step\", if the current source line calls a subroutine,\n\
3148 this command does not enter the subroutine, but instead steps over\n\
3149 the call, in effect treating it as a single source line."));
3150 add_com_alias ("n", "next", class_run
, 1);
3152 add_com_alias ("S", "next", class_run
, 1);
3154 add_com ("step", class_run
, step_command
, _("\
3155 Step program until it reaches a different source line.\n\
3157 Argument N means step N times (or till program stops for another \
3159 add_com_alias ("s", "step", class_run
, 1);
3161 c
= add_com ("until", class_run
, until_command
, _("\
3162 Execute until the program reaches a source line greater than the current\n\
3163 or a specified location (same args as break command) within the current \
3165 set_cmd_completer (c
, location_completer
);
3166 add_com_alias ("u", "until", class_run
, 1);
3168 c
= add_com ("advance", class_run
, advance_command
, _("\
3169 Continue the program up to the given location (same form as args for break \
3171 Execution will also stop upon exit from the current stack frame."));
3172 set_cmd_completer (c
, location_completer
);
3174 c
= add_com ("jump", class_run
, jump_command
, _("\
3175 Continue program being debugged at specified line or address.\n\
3176 Usage: jump <location>\n\
3177 Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\
3178 for an address to start at."));
3179 set_cmd_completer (c
, location_completer
);
3180 add_com_alias ("j", "jump", class_run
, 1);
3184 c
= add_com ("go", class_run
, go_command
, _("\
3185 Usage: go <location>\n\
3186 Continue program being debugged, stopping at specified line or \n\
3188 Give as argument either LINENUM or *ADDR, where ADDR is an \n\
3189 expression for an address to start at.\n\
3190 This command is a combination of tbreak and jump."));
3191 set_cmd_completer (c
, location_completer
);
3195 add_com_alias ("g", "go", class_run
, 1);
3197 add_com ("continue", class_run
, continue_command
, _("\
3198 Continue program being debugged, after signal or breakpoint.\n\
3199 Usage: continue [N]\n\
3200 If proceeding from breakpoint, a number N may be used as an argument,\n\
3201 which means to set the ignore count of that breakpoint to N - 1 (so that\n\
3202 the breakpoint won't break until the Nth time it is reached).\n\
3204 If non-stop mode is enabled, continue only the current thread,\n\
3205 otherwise all the threads in the program are continued. To \n\
3206 continue all stopped threads in non-stop mode, use the -a option.\n\
3207 Specifying -a and an ignore count simultaneously is an error."));
3208 add_com_alias ("c", "cont", class_run
, 1);
3209 add_com_alias ("fg", "cont", class_run
, 1);
3211 c
= add_com ("run", class_run
, run_command
, _("\
3212 Start debugged program. You may specify arguments to give it.\n\
3213 Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\
3214 Input and output redirection with \">\", \"<\", or \">>\" are also \
3216 With no arguments, uses arguments last specified (with \"run\" \
3217 or \"set args\").\n\
3218 To cancel previous arguments and run with no arguments,\n\
3219 use \"set args\" without arguments."));
3220 set_cmd_completer (c
, filename_completer
);
3221 add_com_alias ("r", "run", class_run
, 1);
3223 add_com ("R", class_run
, run_no_args_command
,
3224 _("Start debugged program with no arguments."));
3226 c
= add_com ("start", class_run
, start_command
, _("\
3227 Run the debugged program until the beginning of the main procedure.\n\
3228 You may specify arguments to give to your program, just as with the\n\
3229 \"run\" command."));
3230 set_cmd_completer (c
, filename_completer
);
3232 add_com ("interrupt", class_run
, interrupt_command
,
3233 _("Interrupt the execution of the debugged program.\n\
3234 If non-stop mode is enabled, interrupt only the current thread,\n\
3235 otherwise all the threads in the program are stopped. To \n\
3236 interrupt all running threads in non-stop mode, use the -a option."));
3238 add_info ("registers", nofp_registers_info
, _("\
3239 List of integer registers and their contents, for selected stack frame.\n\
3240 Register name as argument means describe only that register."));
3241 add_info_alias ("r", "registers", 1);
3244 add_com ("lr", class_info
, nofp_registers_info
, _("\
3245 List of integer registers and their contents, for selected stack frame.\n\
3246 Register name as argument means describe only that register."));
3247 add_info ("all-registers", all_registers_info
, _("\
3248 List of all registers and their contents, for selected stack frame.\n\
3249 Register name as argument means describe only that register."));
3251 add_info ("program", program_info
,
3252 _("Execution status of the program."));
3254 add_info ("float", float_info
,
3255 _("Print the status of the floating point unit\n"));
3257 add_info ("vector", vector_info
,
3258 _("Print the status of the vector unit\n"));
3260 add_prefix_cmd ("proc", class_info
, info_proc_cmd
,
3262 Show /proc process information about any running process.\n\
3263 Specify any process id, or use the program being debugged by default."),
3264 &info_proc_cmdlist
, "info proc ",
3265 1/*allow-unknown*/, &infolist
);
3267 add_cmd ("mappings", class_info
, info_proc_cmd_mappings
, _("\
3268 List of mapped memory regions."),
3269 &info_proc_cmdlist
);
3271 add_cmd ("stat", class_info
, info_proc_cmd_stat
, _("\
3272 List process info from /proc/PID/stat."),
3273 &info_proc_cmdlist
);
3275 add_cmd ("status", class_info
, info_proc_cmd_status
, _("\
3276 List process info from /proc/PID/status."),
3277 &info_proc_cmdlist
);
3279 add_cmd ("cwd", class_info
, info_proc_cmd_cwd
, _("\
3280 List current working directory of the process."),
3281 &info_proc_cmdlist
);
3283 add_cmd ("cmdline", class_info
, info_proc_cmd_cmdline
, _("\
3284 List command line arguments of the process."),
3285 &info_proc_cmdlist
);
3287 add_cmd ("exe", class_info
, info_proc_cmd_exe
, _("\
3288 List absolute filename for executable of the process."),
3289 &info_proc_cmdlist
);
3291 add_cmd ("all", class_info
, info_proc_cmd_all
, _("\
3292 List all available /proc info."),
3293 &info_proc_cmdlist
);