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 "exceptions.h"
49 #include "cli/cli-decode.h"
50 #include "gdbthread.h"
52 #include "inline-frame.h"
53 #include "tracepoint.h"
55 #include "continuations.h"
57 #include "cli/cli-utils.h"
59 /* Local functions: */
61 static void nofp_registers_info (char *, int);
63 static void print_return_value (struct value
*function
,
64 struct type
*value_type
);
66 static void until_next_command (int);
68 static void until_command (char *, int);
70 static void path_info (char *, int);
72 static void path_command (char *, int);
74 static void unset_command (char *, int);
76 static void float_info (char *, int);
78 static void disconnect_command (char *, int);
80 static void unset_environment_command (char *, int);
82 static void set_environment_command (char *, int);
84 static void environment_info (char *, int);
86 static void program_info (char *, int);
88 static void finish_command (char *, int);
90 static void signal_command (char *, int);
92 static void jump_command (char *, int);
94 static void step_1 (int, int, char *);
95 static void step_once (int skip_subroutines
, int single_inst
,
96 int count
, int thread
);
98 static void next_command (char *, int);
100 static void step_command (char *, int);
102 static void run_command (char *, int);
104 static void run_no_args_command (char *args
, int from_tty
);
106 static void go_command (char *line_no
, int from_tty
);
108 static int strip_bg_char (char **);
110 void _initialize_infcmd (void);
112 #define ERROR_NO_INFERIOR \
113 if (!target_has_execution) error (_("The program is not being run."));
115 /* Scratch area where string containing arguments to give to the
116 program will be stored by 'set args'. As soon as anything is
117 stored, notice_args_set will move it into per-inferior storage.
118 Arguments are separated by spaces. Empty string (pointer to '\0')
121 static char *inferior_args_scratch
;
123 /* Scratch area where 'set inferior-tty' will store user-provided value.
124 We'll immediate copy it into per-inferior storage. */
126 static char *inferior_io_terminal_scratch
;
128 /* Pid of our debugged inferior, or 0 if no inferior now.
129 Since various parts of infrun.c test this to see whether there is a program
130 being debugged it should be nonzero (currently 3 is used) for remote
133 ptid_t inferior_ptid
;
135 /* Address at which inferior stopped. */
139 /* Nonzero if stopped due to completion of a stack dummy routine. */
141 enum stop_stack_kind stop_stack_dummy
;
143 /* Nonzero if stopped due to a random (unexpected) signal in inferior
146 int stopped_by_random_signal
;
148 /* See inferior.h. */
150 int startup_with_shell
= 1;
153 /* Accessor routines. */
155 /* Set the io terminal for the current inferior. Ownership of
156 TERMINAL_NAME is not transferred. */
159 set_inferior_io_terminal (const char *terminal_name
)
161 xfree (current_inferior ()->terminal
);
162 current_inferior ()->terminal
= terminal_name
? xstrdup (terminal_name
) : 0;
166 get_inferior_io_terminal (void)
168 return current_inferior ()->terminal
;
172 set_inferior_tty_command (char *args
, int from_tty
,
173 struct cmd_list_element
*c
)
175 /* CLI has assigned the user-provided value to inferior_io_terminal_scratch.
176 Now route it to current inferior. */
177 set_inferior_io_terminal (inferior_io_terminal_scratch
);
181 show_inferior_tty_command (struct ui_file
*file
, int from_tty
,
182 struct cmd_list_element
*c
, const char *value
)
184 /* Note that we ignore the passed-in value in favor of computing it
186 const char *inferior_io_terminal
= get_inferior_io_terminal ();
188 if (inferior_io_terminal
== NULL
)
189 inferior_io_terminal
= "";
190 fprintf_filtered (gdb_stdout
,
191 _("Terminal for future runs of program being debugged "
192 "is \"%s\".\n"), inferior_io_terminal
);
196 get_inferior_args (void)
198 if (current_inferior ()->argc
!= 0)
202 n
= construct_inferior_arguments (current_inferior ()->argc
,
203 current_inferior ()->argv
);
204 set_inferior_args (n
);
208 if (current_inferior ()->args
== NULL
)
209 current_inferior ()->args
= xstrdup ("");
211 return current_inferior ()->args
;
214 /* Set the arguments for the current inferior. Ownership of
215 NEWARGS is not transferred. */
218 set_inferior_args (char *newargs
)
220 xfree (current_inferior ()->args
);
221 current_inferior ()->args
= newargs
? xstrdup (newargs
) : NULL
;
222 current_inferior ()->argc
= 0;
223 current_inferior ()->argv
= 0;
227 set_inferior_args_vector (int argc
, char **argv
)
229 current_inferior ()->argc
= argc
;
230 current_inferior ()->argv
= argv
;
233 /* Notice when `set args' is run. */
236 set_args_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
238 /* CLI has assigned the user-provided value to inferior_args_scratch.
239 Now route it to current inferior. */
240 set_inferior_args (inferior_args_scratch
);
243 /* Notice when `show args' is run. */
246 show_args_command (struct ui_file
*file
, int from_tty
,
247 struct cmd_list_element
*c
, const char *value
)
249 /* Note that we ignore the passed-in value in favor of computing it
251 deprecated_show_value_hack (file
, from_tty
, c
, get_inferior_args ());
255 /* Compute command-line string given argument vector. This does the
256 same shell processing as fork_inferior. */
259 construct_inferior_arguments (int argc
, char **argv
)
263 if (startup_with_shell
)
266 /* This holds all the characters considered special to the
268 char *special
= "\"!&*|[]{}<>?`~^=;, \t\n";
269 const char quote
= '"';
271 /* This holds all the characters considered special to the
272 typical Unix shells. We include `^' because the SunOS
273 /bin/sh treats it as a synonym for `|'. */
274 char *special
= "\"!#$&*()\\|[]{}<>?'`~^; \t\n";
275 const char quote
= '\'';
281 /* We over-compute the size. It shouldn't matter. */
282 for (i
= 0; i
< argc
; ++i
)
283 length
+= 3 * strlen (argv
[i
]) + 1 + 2 * (argv
[i
][0] == '\0');
285 result
= (char *) xmalloc (length
);
288 for (i
= 0; i
< argc
; ++i
)
293 /* Need to handle empty arguments specially. */
294 if (argv
[i
][0] == '\0')
304 if (strpbrk (argv
[i
], special
))
310 for (cp
= argv
[i
]; *cp
; ++cp
)
314 /* A newline cannot be quoted with a backslash (it
315 just disappears), only by putting it inside
326 if (strchr (special
, *cp
) != NULL
)
342 /* In this case we can't handle arguments that contain spaces,
343 tabs, or newlines -- see breakup_args(). */
347 for (i
= 0; i
< argc
; ++i
)
349 char *cp
= strchr (argv
[i
], ' ');
351 cp
= strchr (argv
[i
], '\t');
353 cp
= strchr (argv
[i
], '\n');
355 error (_("can't handle command-line "
356 "argument containing whitespace"));
357 length
+= strlen (argv
[i
]) + 1;
360 result
= (char *) xmalloc (length
);
362 for (i
= 0; i
< argc
; ++i
)
365 strcat (result
, " ");
366 strcat (result
, argv
[i
]);
374 /* This function detects whether or not a '&' character (indicating
375 background execution) has been added as *the last* of the arguments ARGS
376 of a command. If it has, it removes it and returns 1. Otherwise it
377 does nothing and returns 0. */
380 strip_bg_char (char **args
)
384 p
= strchr (*args
, '&');
388 if (p
== (*args
+ strlen (*args
) - 1))
390 if (strlen (*args
) > 1)
394 while (*p
== ' ' || *p
== '\t');
405 /* Common actions to take after creating any sort of inferior, by any
406 means (running, attaching, connecting, et cetera). The target
407 should be stopped. */
410 post_create_inferior (struct target_ops
*target
, int from_tty
)
412 volatile struct gdb_exception ex
;
414 /* Be sure we own the terminal in case write operations are performed. */
415 target_terminal_ours ();
417 /* If the target hasn't taken care of this already, do it now.
418 Targets which need to access registers during to_open,
419 to_create_inferior, or to_attach should do it earlier; but many
421 target_find_description ();
423 /* Now that we know the register layout, retrieve current PC. But
424 if the PC is unavailable (e.g., we're opening a core file with
425 missing registers info), ignore it. */
427 TRY_CATCH (ex
, RETURN_MASK_ERROR
)
429 stop_pc
= regcache_read_pc (get_current_regcache ());
431 if (ex
.reason
< 0 && ex
.error
!= NOT_AVAILABLE_ERROR
)
432 throw_exception (ex
);
436 const unsigned solib_add_generation
437 = current_program_space
->solib_add_generation
;
439 /* Create the hooks to handle shared library load and unload
441 solib_create_inferior_hook (from_tty
);
443 if (current_program_space
->solib_add_generation
== solib_add_generation
)
445 /* The platform-specific hook should load initial shared libraries,
446 but didn't. FROM_TTY will be incorrectly 0 but such solib
447 targets should be fixed anyway. Call it only after the solib
448 target has been initialized by solib_create_inferior_hook. */
451 warning (_("platform-specific solib_create_inferior_hook did "
452 "not load initial shared libraries."));
454 /* If the solist is global across processes, there's no need to
456 if (!gdbarch_has_global_solist (target_gdbarch ()))
457 solib_add (NULL
, 0, target
, auto_solib_add
);
461 /* If the user sets watchpoints before execution having started,
462 then she gets software watchpoints, because GDB can't know which
463 target will end up being pushed, or if it supports hardware
464 watchpoints or not. breakpoint_re_set takes care of promoting
465 watchpoints to hardware watchpoints if possible, however, if this
466 new inferior doesn't load shared libraries or we don't pull in
467 symbols from any other source on this target/arch,
468 breakpoint_re_set is never called. Call it now so that software
469 watchpoints get a chance to be promoted to hardware watchpoints
470 if the now pushed target supports hardware watchpoints. */
471 breakpoint_re_set ();
473 observer_notify_inferior_created (target
, from_tty
);
476 /* Kill the inferior if already running. This function is designed
477 to be called when we are about to start the execution of the program
478 from the beginning. Ask the user to confirm that he wants to restart
479 the program being debugged when FROM_TTY is non-null. */
482 kill_if_already_running (int from_tty
)
484 if (! ptid_equal (inferior_ptid
, null_ptid
) && target_has_execution
)
486 /* Bail out before killing the program if we will not be able to
488 target_require_runnable ();
491 && !query (_("The program being debugged has been started already.\n\
492 Start it from the beginning? ")))
493 error (_("Program not restarted."));
498 /* See inferior.h. */
501 prepare_execution_command (struct target_ops
*target
, int background
)
503 /* If we get a request for running in the bg but the target
504 doesn't support it, error out. */
505 if (background
&& !target
->to_can_async_p (target
))
506 error (_("Asynchronous execution not supported on this target."));
508 /* If we don't get a request of running in the bg, then we need
509 to simulate synchronous (fg) execution. */
510 if (!background
&& target
->to_can_async_p (target
))
512 /* Simulate synchronous execution. Note no cleanup is necessary
513 for this. stdin is re-enabled whenever an error reaches the
515 async_disable_stdin ();
519 /* Implement the "run" command. If TBREAK_AT_MAIN is set, then insert
520 a temporary breakpoint at the begining of the main program before
521 running the program. */
524 run_command_1 (char *args
, int from_tty
, int tbreak_at_main
)
527 struct cleanup
*old_chain
;
529 struct ui_out
*uiout
= current_uiout
;
530 struct target_ops
*run_target
;
535 kill_if_already_running (from_tty
);
537 init_wait_for_inferior ();
538 clear_breakpoint_hit_counts ();
540 /* Clean up any leftovers from other runs. Some other things from
541 this function should probably be moved into target_pre_inferior. */
542 target_pre_inferior (from_tty
);
544 /* The comment here used to read, "The exec file is re-read every
545 time we do a generic_mourn_inferior, so we just have to worry
546 about the symbol file." The `generic_mourn_inferior' function
547 gets called whenever the program exits. However, suppose the
548 program exits, and *then* the executable file changes? We need
549 to check again here. Since reopen_exec_file doesn't do anything
550 if the timestamp hasn't changed, I don't see the harm. */
555 async_exec
= strip_bg_char (&args
);
557 /* Do validation and preparation before possibly changing anything
560 run_target
= find_run_target ();
562 prepare_execution_command (run_target
, async_exec
);
564 if (non_stop
&& !run_target
->to_supports_non_stop (run_target
))
565 error (_("The target does not support running in non-stop mode."));
567 /* Done. Can now set breakpoints, change inferior args, etc. */
569 /* Insert the temporary breakpoint if a location was specified. */
571 tbreak_command (main_name (), 0);
573 exec_file
= (char *) get_exec_file (0);
575 /* We keep symbols from add-symbol-file, on the grounds that the
576 user might want to add some symbols before running the program
577 (right?). But sometimes (dynamic loading where the user manually
578 introduces the new symbols with add-symbol-file), the code which
579 the symbols describe does not persist between runs. Currently
580 the user has to manually nuke all symbols between runs if they
581 want them to go away (PR 2207). This is probably reasonable. */
583 /* If there were other args, beside '&', process them. */
585 set_inferior_args (args
);
589 ui_out_field_string (uiout
, NULL
, "Starting program");
590 ui_out_text (uiout
, ": ");
592 ui_out_field_string (uiout
, "execfile", exec_file
);
593 ui_out_spaces (uiout
, 1);
594 /* We call get_inferior_args() because we might need to compute
596 ui_out_field_string (uiout
, "infargs", get_inferior_args ());
597 ui_out_text (uiout
, "\n");
598 ui_out_flush (uiout
);
601 /* We call get_inferior_args() because we might need to compute
603 run_target
->to_create_inferior (run_target
, exec_file
, get_inferior_args (),
604 environ_vector (current_inferior ()->environment
),
606 /* to_create_inferior should push the target, so after this point we
607 shouldn't refer to run_target again. */
610 /* We're starting off a new process. When we get out of here, in
611 non-stop mode, finish the state of all threads of that process,
612 but leave other threads alone, as they may be stopped in internal
613 events --- the frontend shouldn't see them as stopped. In
614 all-stop, always finish the state of all threads, as we may be
615 resuming more than just the new process. */
617 ptid
= pid_to_ptid (ptid_get_pid (inferior_ptid
));
619 ptid
= minus_one_ptid
;
620 old_chain
= make_cleanup (finish_thread_state_cleanup
, &ptid
);
622 /* Pass zero for FROM_TTY, because at this point the "run" command
623 has done its thing; now we are setting up the running program. */
624 post_create_inferior (¤t_target
, 0);
626 /* Start the target running. Do not use -1 continuation as it would skip
627 breakpoint right at the entry point. */
628 proceed (regcache_read_pc (get_current_regcache ()), GDB_SIGNAL_0
, 0);
630 /* Since there was no error, there's no need to finish the thread
632 discard_cleanups (old_chain
);
636 run_command (char *args
, int from_tty
)
638 run_command_1 (args
, from_tty
, 0);
642 run_no_args_command (char *args
, int from_tty
)
644 set_inferior_args ("");
648 /* Start the execution of the program up until the beginning of the main
652 start_command (char *args
, int from_tty
)
654 /* Some languages such as Ada need to search inside the program
655 minimal symbols for the location where to put the temporary
656 breakpoint before starting. */
657 if (!have_minimal_symbols ())
658 error (_("No symbol table loaded. Use the \"file\" command."));
660 /* Run the program until reaching the main procedure... */
661 run_command_1 (args
, from_tty
, 1);
665 proceed_thread_callback (struct thread_info
*thread
, void *arg
)
667 /* We go through all threads individually instead of compressing
668 into a single target `resume_all' request, because some threads
669 may be stopped in internal breakpoints/events, or stopped waiting
670 for its turn in the displaced stepping queue (that is, they are
671 running && !executing). The target side has no idea about why
672 the thread is stopped, so a `resume_all' command would resume too
673 much. If/when GDB gains a way to tell the target `hold this
674 thread stopped until I say otherwise', then we can optimize
676 if (!is_stopped (thread
->ptid
))
679 switch_to_thread (thread
->ptid
);
680 clear_proceed_status (0);
681 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
686 ensure_valid_thread (void)
688 if (ptid_equal (inferior_ptid
, null_ptid
)
689 || is_exited (inferior_ptid
))
690 error (_("Cannot execute this command without a live selected thread."));
693 /* If the user is looking at trace frames, any resumption of execution
694 is likely to mix up recorded and live target data. So simply
695 disallow those commands. */
698 ensure_not_tfind_mode (void)
700 if (get_traceframe_number () >= 0)
701 error (_("Cannot execute this command while looking at trace frames."));
704 /* Throw an error indicating the current thread is running. */
707 error_is_running (void)
709 error (_("Cannot execute this command while "
710 "the selected thread is running."));
713 /* Calls error_is_running if the current thread is running. */
716 ensure_not_running (void)
718 if (is_running (inferior_ptid
))
723 continue_1 (int all_threads
)
726 ensure_not_tfind_mode ();
728 if (non_stop
&& all_threads
)
730 /* Don't error out if the current thread is running, because
731 there may be other stopped threads. */
732 struct cleanup
*old_chain
;
734 /* Backup current thread and selected frame. */
735 old_chain
= make_cleanup_restore_current_thread ();
737 iterate_over_threads (proceed_thread_callback
, NULL
);
739 /* Restore selected ptid. */
740 do_cleanups (old_chain
);
744 ensure_valid_thread ();
745 ensure_not_running ();
746 clear_proceed_status (0);
747 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
751 /* continue [-a] [proceed-count] [&] */
754 continue_command (char *args
, int from_tty
)
760 /* Find out whether we must run in the background. */
762 async_exec
= strip_bg_char (&args
);
764 prepare_execution_command (¤t_target
, async_exec
);
768 if (strncmp (args
, "-a", sizeof ("-a") - 1) == 0)
771 args
+= sizeof ("-a") - 1;
777 if (!non_stop
&& all_threads
)
778 error (_("`-a' is meaningless in all-stop mode."));
780 if (args
!= NULL
&& all_threads
)
781 error (_("Can't resume all threads and specify "
782 "proceed count simultaneously."));
784 /* If we have an argument left, set proceed count of breakpoint we
791 struct thread_info
*tp
;
794 tp
= find_thread_ptid (inferior_ptid
);
798 struct target_waitstatus ws
;
800 get_last_target_status (&last_ptid
, &ws
);
801 tp
= find_thread_ptid (last_ptid
);
804 bs
= tp
->control
.stop_bpstat
;
806 while ((stat
= bpstat_num (&bs
, &num
)) != 0)
809 set_ignore_count (num
,
810 parse_and_eval_long (args
) - 1,
812 /* set_ignore_count prints a message ending with a period.
813 So print two spaces before "Continuing.". */
815 printf_filtered (" ");
819 if (!stopped
&& from_tty
)
822 ("Not stopped at any breakpoint; argument ignored.\n");
827 printf_filtered (_("Continuing.\n"));
829 continue_1 (all_threads
);
832 /* Record the starting point of a "step" or "next" command. */
835 set_step_frame (void)
837 struct symtab_and_line sal
;
839 find_frame_sal (get_current_frame (), &sal
);
840 set_step_info (get_current_frame (), sal
);
843 /* Step until outside of current statement. */
846 step_command (char *count_string
, int from_tty
)
848 step_1 (0, 0, count_string
);
851 /* Likewise, but skip over subroutine calls as if single instructions. */
854 next_command (char *count_string
, int from_tty
)
856 step_1 (1, 0, count_string
);
859 /* Likewise, but step only one instruction. */
862 stepi_command (char *count_string
, int from_tty
)
864 step_1 (0, 1, count_string
);
868 nexti_command (char *count_string
, int from_tty
)
870 step_1 (1, 1, count_string
);
874 delete_longjmp_breakpoint_cleanup (void *arg
)
876 int thread
= * (int *) arg
;
877 delete_longjmp_breakpoint (thread
);
881 step_1 (int skip_subroutines
, int single_inst
, char *count_string
)
884 struct cleanup
*cleanups
= make_cleanup (null_cleanup
, NULL
);
889 ensure_not_tfind_mode ();
890 ensure_valid_thread ();
891 ensure_not_running ();
894 async_exec
= strip_bg_char (&count_string
);
896 prepare_execution_command (¤t_target
, async_exec
);
898 count
= count_string
? parse_and_eval_long (count_string
) : 1;
900 if (!single_inst
|| skip_subroutines
) /* Leave si command alone. */
902 struct thread_info
*tp
= inferior_thread ();
904 if (in_thread_list (inferior_ptid
))
905 thread
= pid_to_thread_id (inferior_ptid
);
907 set_longjmp_breakpoint (tp
, get_frame_id (get_current_frame ()));
909 make_cleanup (delete_longjmp_breakpoint_cleanup
, &thread
);
912 /* In synchronous case, all is well; each step_once call will step once. */
913 if (!target_can_async_p ())
915 for (; count
> 0; count
--)
917 step_once (skip_subroutines
, single_inst
, count
, thread
);
919 if (!target_has_execution
)
923 struct thread_info
*tp
= inferior_thread ();
925 if (!tp
->control
.stop_step
|| !tp
->step_multi
)
927 /* If we stopped for some reason that is not stepping
928 there are no further steps to make. */
935 do_cleanups (cleanups
);
939 /* In the case of an asynchronous target things get complicated;
940 do only one step for now, before returning control to the
941 event loop. Let the continuation figure out how many other
942 steps we need to do, and handle them one at the time, through
944 step_once (skip_subroutines
, single_inst
, count
, thread
);
946 /* We are running, and the continuation is installed. It will
947 disable the longjmp breakpoint as appropriate. */
948 discard_cleanups (cleanups
);
952 struct step_1_continuation_args
955 int skip_subroutines
;
960 /* Called after we are done with one step operation, to check whether
961 we need to step again, before we print the prompt and return control
962 to the user. If count is > 1, we will need to do one more call to
963 proceed(), via step_once(). Basically it is like step_once and
964 step_1_continuation are co-recursive. */
967 step_1_continuation (void *args
, int err
)
969 struct step_1_continuation_args
*a
= args
;
971 if (target_has_execution
)
973 struct thread_info
*tp
;
975 tp
= inferior_thread ();
977 && tp
->step_multi
&& tp
->control
.stop_step
)
979 /* There are more steps to make, and we did stop due to
980 ending a stepping range. Do another step. */
981 step_once (a
->skip_subroutines
, a
->single_inst
,
982 a
->count
- 1, a
->thread
);
988 /* We either hit an error, or stopped for some reason that is
989 not stepping, or there are no further steps to make.
991 if (!a
->single_inst
|| a
->skip_subroutines
)
992 delete_longjmp_breakpoint (a
->thread
);
995 /* Do just one step operation. This is useful to implement the 'step
996 n' kind of commands. In case of asynchronous targets, we will have
997 to set up a continuation to be done after the target stops (after
998 this one step). For synch targets, the caller handles further
1002 step_once (int skip_subroutines
, int single_inst
, int count
, int thread
)
1004 struct frame_info
*frame
= get_current_frame ();
1008 /* Don't assume THREAD is a valid thread id. It is set to -1 if
1009 the longjmp breakpoint was not required. Use the
1010 INFERIOR_PTID thread instead, which is the same thread when
1012 struct thread_info
*tp
= inferior_thread ();
1014 clear_proceed_status (!skip_subroutines
);
1021 /* Step at an inlined function behaves like "down". */
1022 if (!skip_subroutines
1023 && inline_skipped_frames (inferior_ptid
))
1027 /* Pretend that we've ran. */
1028 resume_ptid
= user_visible_resume_ptid (1);
1029 set_running (resume_ptid
, 1);
1031 step_into_inline_frame (inferior_ptid
);
1033 step_once (skip_subroutines
, single_inst
, count
- 1, thread
);
1036 /* Pretend that we've stopped. */
1039 if (target_can_async_p ())
1040 inferior_event_handler (INF_EXEC_COMPLETE
, NULL
);
1045 pc
= get_frame_pc (frame
);
1046 find_pc_line_pc_range (pc
,
1047 &tp
->control
.step_range_start
,
1048 &tp
->control
.step_range_end
);
1050 tp
->control
.may_range_step
= 1;
1052 /* If we have no line info, switch to stepi mode. */
1053 if (tp
->control
.step_range_end
== 0 && step_stop_if_no_debug
)
1055 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1056 tp
->control
.may_range_step
= 0;
1058 else if (tp
->control
.step_range_end
== 0)
1062 if (find_pc_partial_function (pc
, &name
,
1063 &tp
->control
.step_range_start
,
1064 &tp
->control
.step_range_end
) == 0)
1065 error (_("Cannot find bounds of current function"));
1067 target_terminal_ours ();
1068 printf_filtered (_("Single stepping until exit from function %s,"
1069 "\nwhich has no line number information.\n"),
1075 /* Say we are stepping, but stop after one insn whatever it does. */
1076 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1077 if (!skip_subroutines
)
1079 Don't step over function calls, not even to functions lacking
1081 tp
->control
.step_over_calls
= STEP_OVER_NONE
;
1084 if (skip_subroutines
)
1085 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1087 tp
->step_multi
= (count
> 1);
1088 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 1);
1090 /* For async targets, register a continuation to do any
1091 additional steps. For sync targets, the caller will handle
1092 further stepping. */
1093 if (target_can_async_p ())
1095 struct step_1_continuation_args
*args
;
1097 args
= xmalloc (sizeof (*args
));
1098 args
->skip_subroutines
= skip_subroutines
;
1099 args
->single_inst
= single_inst
;
1100 args
->count
= count
;
1101 args
->thread
= thread
;
1103 add_intermediate_continuation (tp
, step_1_continuation
, args
, xfree
);
1109 /* Continue program at specified address. */
1112 jump_command (char *arg
, int from_tty
)
1114 struct gdbarch
*gdbarch
= get_current_arch ();
1116 struct symtabs_and_lines sals
;
1117 struct symtab_and_line sal
;
1123 ensure_not_tfind_mode ();
1124 ensure_valid_thread ();
1125 ensure_not_running ();
1127 /* Find out whether we must run in the background. */
1129 async_exec
= strip_bg_char (&arg
);
1131 prepare_execution_command (¤t_target
, async_exec
);
1134 error_no_arg (_("starting address"));
1136 sals
= decode_line_with_last_displayed (arg
, DECODE_LINE_FUNFIRSTLINE
);
1137 if (sals
.nelts
!= 1)
1139 error (_("Unreasonable jump request"));
1145 if (sal
.symtab
== 0 && sal
.pc
== 0)
1146 error (_("No source file has been specified."));
1148 resolve_sal_pc (&sal
); /* May error out. */
1150 /* See if we are trying to jump to another function. */
1151 fn
= get_frame_function (get_current_frame ());
1152 sfn
= find_pc_function (sal
.pc
);
1153 if (fn
!= NULL
&& sfn
!= fn
)
1155 if (!query (_("Line %d is not in `%s'. Jump anyway? "), sal
.line
,
1156 SYMBOL_PRINT_NAME (fn
)))
1158 error (_("Not confirmed."));
1165 fixup_symbol_section (sfn
, 0);
1166 if (section_is_overlay (SYMBOL_OBJ_SECTION (SYMBOL_OBJFILE (sfn
), sfn
)) &&
1167 !section_is_mapped (SYMBOL_OBJ_SECTION (SYMBOL_OBJFILE (sfn
), sfn
)))
1169 if (!query (_("WARNING!!! Destination is in "
1170 "unmapped overlay! Jump anyway? ")))
1172 error (_("Not confirmed."));
1182 printf_filtered (_("Continuing at "));
1183 fputs_filtered (paddress (gdbarch
, addr
), gdb_stdout
);
1184 printf_filtered (".\n");
1187 clear_proceed_status (0);
1188 proceed (addr
, GDB_SIGNAL_0
, 0);
1192 /* Go to line or address in current procedure. */
1195 go_command (char *line_no
, int from_tty
)
1197 if (line_no
== (char *) NULL
|| !*line_no
)
1198 printf_filtered (_("Usage: go <location>\n"));
1201 tbreak_command (line_no
, from_tty
);
1202 jump_command (line_no
, from_tty
);
1207 /* Continue program giving it specified signal. */
1210 signal_command (char *signum_exp
, int from_tty
)
1212 enum gdb_signal oursig
;
1215 dont_repeat (); /* Too dangerous. */
1217 ensure_not_tfind_mode ();
1218 ensure_valid_thread ();
1219 ensure_not_running ();
1221 /* Find out whether we must run in the background. */
1222 if (signum_exp
!= NULL
)
1223 async_exec
= strip_bg_char (&signum_exp
);
1225 prepare_execution_command (¤t_target
, async_exec
);
1228 error_no_arg (_("signal number"));
1230 /* It would be even slicker to make signal names be valid expressions,
1231 (the type could be "enum $signal" or some such), then the user could
1232 assign them to convenience variables. */
1233 oursig
= gdb_signal_from_name (signum_exp
);
1235 if (oursig
== GDB_SIGNAL_UNKNOWN
)
1237 /* No, try numeric. */
1238 int num
= parse_and_eval_long (signum_exp
);
1241 oursig
= GDB_SIGNAL_0
;
1243 oursig
= gdb_signal_from_command (num
);
1246 /* Look for threads other than the current that this command ends up
1247 resuming too (due to schedlock off), and warn if they'll get a
1248 signal delivered. "signal 0" is used to suppress a previous
1249 signal, but if the current thread is no longer the one that got
1250 the signal, then the user is potentially suppressing the signal
1251 of the wrong thread. */
1254 struct thread_info
*tp
;
1256 int must_confirm
= 0;
1258 /* This indicates what will be resumed. Either a single thread,
1259 a whole process, or all threads of all processes. */
1260 resume_ptid
= user_visible_resume_ptid (0);
1262 ALL_NON_EXITED_THREADS (tp
)
1264 if (ptid_equal (tp
->ptid
, inferior_ptid
))
1266 if (!ptid_match (tp
->ptid
, resume_ptid
))
1269 if (tp
->suspend
.stop_signal
!= GDB_SIGNAL_0
1270 && signal_pass_state (tp
->suspend
.stop_signal
))
1273 printf_unfiltered (_("Note:\n"));
1274 printf_unfiltered (_(" Thread %d previously stopped with signal %s, %s.\n"),
1276 gdb_signal_to_name (tp
->suspend
.stop_signal
),
1277 gdb_signal_to_string (tp
->suspend
.stop_signal
));
1283 && !query (_("Continuing thread %d (the current thread) with specified signal will\n"
1284 "still deliver the signals noted above to their respective threads.\n"
1285 "Continue anyway? "),
1286 inferior_thread ()->num
))
1287 error (_("Not confirmed."));
1292 if (oursig
== GDB_SIGNAL_0
)
1293 printf_filtered (_("Continuing with no signal.\n"));
1295 printf_filtered (_("Continuing with signal %s.\n"),
1296 gdb_signal_to_name (oursig
));
1299 clear_proceed_status (0);
1300 proceed ((CORE_ADDR
) -1, oursig
, 0);
1303 /* Queue a signal to be delivered to the current thread. */
1306 queue_signal_command (char *signum_exp
, int from_tty
)
1308 enum gdb_signal oursig
;
1309 struct thread_info
*tp
;
1312 ensure_not_tfind_mode ();
1313 ensure_valid_thread ();
1314 ensure_not_running ();
1316 if (signum_exp
== NULL
)
1317 error_no_arg (_("signal number"));
1319 /* It would be even slicker to make signal names be valid expressions,
1320 (the type could be "enum $signal" or some such), then the user could
1321 assign them to convenience variables. */
1322 oursig
= gdb_signal_from_name (signum_exp
);
1324 if (oursig
== GDB_SIGNAL_UNKNOWN
)
1326 /* No, try numeric. */
1327 int num
= parse_and_eval_long (signum_exp
);
1330 oursig
= GDB_SIGNAL_0
;
1332 oursig
= gdb_signal_from_command (num
);
1335 if (oursig
!= GDB_SIGNAL_0
1336 && !signal_pass_state (oursig
))
1337 error (_("Signal handling set to not pass this signal to the program."));
1339 tp
= inferior_thread ();
1340 tp
->suspend
.stop_signal
= oursig
;
1343 /* Continuation args to be passed to the "until" command
1345 struct until_next_continuation_args
1347 /* The thread that was current when the command was executed. */
1351 /* A continuation callback for until_next_command. */
1354 until_next_continuation (void *arg
, int err
)
1356 struct until_next_continuation_args
*a
= arg
;
1358 delete_longjmp_breakpoint (a
->thread
);
1361 /* Proceed until we reach a different source line with pc greater than
1362 our current one or exit the function. We skip calls in both cases.
1364 Note that eventually this command should probably be changed so
1365 that only source lines are printed out when we hit the breakpoint
1366 we set. This may involve changes to wait_for_inferior and the
1367 proceed status code. */
1370 until_next_command (int from_tty
)
1372 struct frame_info
*frame
;
1374 struct symbol
*func
;
1375 struct symtab_and_line sal
;
1376 struct thread_info
*tp
= inferior_thread ();
1377 int thread
= tp
->num
;
1378 struct cleanup
*old_chain
;
1380 clear_proceed_status (0);
1383 frame
= get_current_frame ();
1385 /* Step until either exited from this function or greater
1386 than the current line (if in symbolic section) or pc (if
1389 pc
= get_frame_pc (frame
);
1390 func
= find_pc_function (pc
);
1394 struct bound_minimal_symbol msymbol
= lookup_minimal_symbol_by_pc (pc
);
1396 if (msymbol
.minsym
== NULL
)
1397 error (_("Execution is not within a known function."));
1399 tp
->control
.step_range_start
= BMSYMBOL_VALUE_ADDRESS (msymbol
);
1400 /* The upper-bound of step_range is exclusive. In order to make PC
1401 within the range, set the step_range_end with PC + 1. */
1402 tp
->control
.step_range_end
= pc
+ 1;
1406 sal
= find_pc_line (pc
, 0);
1408 tp
->control
.step_range_start
= BLOCK_START (SYMBOL_BLOCK_VALUE (func
));
1409 tp
->control
.step_range_end
= sal
.end
;
1411 tp
->control
.may_range_step
= 1;
1413 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1415 tp
->step_multi
= 0; /* Only one call to proceed */
1417 set_longjmp_breakpoint (tp
, get_frame_id (frame
));
1418 old_chain
= make_cleanup (delete_longjmp_breakpoint_cleanup
, &thread
);
1420 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 1);
1422 if (target_can_async_p () && is_running (inferior_ptid
))
1424 struct until_next_continuation_args
*cont_args
;
1426 discard_cleanups (old_chain
);
1427 cont_args
= XNEW (struct until_next_continuation_args
);
1428 cont_args
->thread
= inferior_thread ()->num
;
1430 add_continuation (tp
, until_next_continuation
, cont_args
, xfree
);
1433 do_cleanups (old_chain
);
1437 until_command (char *arg
, int from_tty
)
1442 ensure_not_tfind_mode ();
1443 ensure_valid_thread ();
1444 ensure_not_running ();
1446 /* Find out whether we must run in the background. */
1448 async_exec
= strip_bg_char (&arg
);
1450 prepare_execution_command (¤t_target
, async_exec
);
1453 until_break_command (arg
, from_tty
, 0);
1455 until_next_command (from_tty
);
1459 advance_command (char *arg
, int from_tty
)
1464 ensure_not_tfind_mode ();
1465 ensure_valid_thread ();
1466 ensure_not_running ();
1469 error_no_arg (_("a location"));
1471 /* Find out whether we must run in the background. */
1473 async_exec
= strip_bg_char (&arg
);
1475 prepare_execution_command (¤t_target
, async_exec
);
1477 until_break_command (arg
, from_tty
, 1);
1480 /* Return the value of the result of a function at the end of a 'finish'
1484 get_return_value (struct value
*function
, struct type
*value_type
)
1486 struct regcache
*stop_regs
= stop_registers
;
1487 struct gdbarch
*gdbarch
;
1488 struct value
*value
;
1489 struct cleanup
*cleanup
= make_cleanup (null_cleanup
, NULL
);
1491 /* If stop_registers were not saved, use the current registers. */
1494 stop_regs
= regcache_dup (get_current_regcache ());
1495 make_cleanup_regcache_xfree (stop_regs
);
1498 gdbarch
= get_regcache_arch (stop_regs
);
1500 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. */
1535 print_return_value (struct value
*function
, struct type
*value_type
)
1537 struct value
*value
= get_return_value (function
, value_type
);
1538 struct ui_out
*uiout
= current_uiout
;
1542 struct value_print_options opts
;
1543 struct ui_file
*stb
;
1544 struct cleanup
*old_chain
;
1547 stb
= mem_fileopen ();
1548 old_chain
= make_cleanup_ui_file_delete (stb
);
1549 ui_out_text (uiout
, "Value returned is ");
1550 ui_out_field_fmt (uiout
, "gdb-result-var", "$%d",
1551 record_latest_value (value
));
1552 ui_out_text (uiout
, " = ");
1553 get_no_prettyformat_print_options (&opts
);
1554 value_print (value
, stb
, &opts
);
1555 ui_out_field_stream (uiout
, "return-value", stb
);
1556 ui_out_text (uiout
, "\n");
1557 do_cleanups (old_chain
);
1561 ui_out_text (uiout
, "Value returned has type: ");
1562 ui_out_field_string (uiout
, "return-type", TYPE_NAME (value_type
));
1563 ui_out_text (uiout
, ".");
1564 ui_out_text (uiout
, " Cannot determine contents\n");
1568 /* Stuff that needs to be done by the finish command after the target
1569 has stopped. In asynchronous mode, we wait for the target to stop
1570 in the call to poll or select in the event loop, so it is
1571 impossible to do all the stuff as part of the finish_command
1572 function itself. The only chance we have to complete this command
1573 is in fetch_inferior_event, which is called by the event loop as
1574 soon as it detects that the target has stopped. */
1576 struct finish_command_continuation_args
1578 /* The thread that as current when the command was executed. */
1580 struct breakpoint
*breakpoint
;
1581 struct symbol
*function
;
1585 finish_command_continuation (void *arg
, int err
)
1587 struct finish_command_continuation_args
*a
= arg
;
1591 struct thread_info
*tp
= NULL
;
1594 if (!ptid_equal (inferior_ptid
, null_ptid
)
1595 && target_has_execution
1596 && is_stopped (inferior_ptid
))
1598 tp
= inferior_thread ();
1599 bs
= tp
->control
.stop_bpstat
;
1602 if (bpstat_find_breakpoint (bs
, a
->breakpoint
) != NULL
1603 && a
->function
!= NULL
)
1605 struct type
*value_type
;
1607 value_type
= TYPE_TARGET_TYPE (SYMBOL_TYPE (a
->function
));
1609 internal_error (__FILE__
, __LINE__
,
1610 _("finish_command: function has no target type"));
1612 if (TYPE_CODE (value_type
) != TYPE_CODE_VOID
)
1614 volatile struct gdb_exception ex
;
1617 func
= read_var_value (a
->function
, get_current_frame ());
1618 TRY_CATCH (ex
, RETURN_MASK_ALL
)
1620 /* print_return_value can throw an exception in some
1621 circumstances. We need to catch this so that we still
1622 delete the breakpoint. */
1623 print_return_value (func
, value_type
);
1626 exception_print (gdb_stdout
, ex
);
1630 /* We suppress normal call of normal_stop observer and do it
1631 here so that the *stopped notification includes the return
1633 if (bs
!= NULL
&& tp
->control
.proceed_to_finish
)
1634 observer_notify_normal_stop (bs
, 1 /* print frame */);
1637 delete_breakpoint (a
->breakpoint
);
1638 delete_longjmp_breakpoint (a
->thread
);
1642 finish_command_continuation_free_arg (void *arg
)
1647 /* finish_backward -- helper function for finish_command. */
1650 finish_backward (struct symbol
*function
)
1652 struct symtab_and_line sal
;
1653 struct thread_info
*tp
= inferior_thread ();
1655 CORE_ADDR func_addr
;
1657 pc
= get_frame_pc (get_current_frame ());
1659 if (find_pc_partial_function (pc
, NULL
, &func_addr
, NULL
) == 0)
1660 error (_("Cannot find bounds of current function"));
1662 sal
= find_pc_line (func_addr
, 0);
1664 tp
->control
.proceed_to_finish
= 1;
1665 /* Special case: if we're sitting at the function entry point,
1666 then all we need to do is take a reverse singlestep. We
1667 don't need to set a breakpoint, and indeed it would do us
1670 Note that this can only happen at frame #0, since there's
1671 no way that a function up the stack can have a return address
1672 that's equal to its entry point. */
1676 struct frame_info
*frame
= get_selected_frame (NULL
);
1677 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
1678 struct symtab_and_line sr_sal
;
1680 /* Set a step-resume at the function's entry point. Once that's
1681 hit, we'll do one more step backwards. */
1684 sr_sal
.pspace
= get_frame_program_space (frame
);
1685 insert_step_resume_breakpoint_at_sal (gdbarch
,
1686 sr_sal
, null_frame_id
);
1688 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
1692 /* We're almost there -- we just need to back up by one more
1694 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1695 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 1);
1699 /* finish_forward -- helper function for finish_command. */
1702 finish_forward (struct symbol
*function
, struct frame_info
*frame
)
1704 struct frame_id frame_id
= get_frame_id (frame
);
1705 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
1706 struct symtab_and_line sal
;
1707 struct thread_info
*tp
= inferior_thread ();
1708 struct breakpoint
*breakpoint
;
1709 struct cleanup
*old_chain
;
1710 struct finish_command_continuation_args
*cargs
;
1711 int thread
= tp
->num
;
1713 sal
= find_pc_line (get_frame_pc (frame
), 0);
1714 sal
.pc
= get_frame_pc (frame
);
1716 breakpoint
= set_momentary_breakpoint (gdbarch
, sal
,
1717 get_stack_frame_id (frame
),
1720 /* set_momentary_breakpoint invalidates FRAME. */
1723 old_chain
= make_cleanup_delete_breakpoint (breakpoint
);
1725 set_longjmp_breakpoint (tp
, frame_id
);
1726 make_cleanup (delete_longjmp_breakpoint_cleanup
, &thread
);
1728 /* We want stop_registers, please... */
1729 tp
->control
.proceed_to_finish
= 1;
1730 cargs
= xmalloc (sizeof (*cargs
));
1732 cargs
->thread
= thread
;
1733 cargs
->breakpoint
= breakpoint
;
1734 cargs
->function
= function
;
1735 add_continuation (tp
, finish_command_continuation
, cargs
,
1736 finish_command_continuation_free_arg
);
1737 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
1739 discard_cleanups (old_chain
);
1740 if (!target_can_async_p ())
1741 do_all_continuations (0);
1744 /* "finish": Set a temporary breakpoint at the place the selected
1745 frame will return to, then continue. */
1748 finish_command (char *arg
, int from_tty
)
1750 struct frame_info
*frame
;
1751 struct symbol
*function
;
1756 ensure_not_tfind_mode ();
1757 ensure_valid_thread ();
1758 ensure_not_running ();
1760 /* Find out whether we must run in the background. */
1762 async_exec
= strip_bg_char (&arg
);
1764 prepare_execution_command (¤t_target
, async_exec
);
1767 error (_("The \"finish\" command does not take any arguments."));
1769 frame
= get_prev_frame (get_selected_frame (_("No selected frame.")));
1771 error (_("\"finish\" not meaningful in the outermost frame."));
1773 clear_proceed_status (0);
1775 /* Finishing from an inline frame is completely different. We don't
1776 try to show the "return value" - no way to locate it. So we do
1777 not need a completion. */
1778 if (get_frame_type (get_selected_frame (_("No selected frame.")))
1781 /* Claim we are stepping in the calling frame. An empty step
1782 range means that we will stop once we aren't in a function
1783 called by that frame. We don't use the magic "1" value for
1784 step_range_end, because then infrun will think this is nexti,
1785 and not step over the rest of this inlined function call. */
1786 struct thread_info
*tp
= inferior_thread ();
1787 struct symtab_and_line empty_sal
;
1789 init_sal (&empty_sal
);
1790 set_step_info (frame
, empty_sal
);
1791 tp
->control
.step_range_start
= get_frame_pc (frame
);
1792 tp
->control
.step_range_end
= tp
->control
.step_range_start
;
1793 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1795 /* Print info on the selected frame, including level number but not
1799 printf_filtered (_("Run till exit from "));
1800 print_stack_frame (get_selected_frame (NULL
), 1, LOCATION
, 0);
1803 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 1);
1807 /* Ignore TAILCALL_FRAME type frames, they were executed already before
1808 entering THISFRAME. */
1809 while (get_frame_type (frame
) == TAILCALL_FRAME
)
1810 frame
= get_prev_frame (frame
);
1812 /* Find the function we will return from. */
1814 function
= find_pc_function (get_frame_pc (get_selected_frame (NULL
)));
1816 /* Print info on the selected frame, including level number but not
1820 if (execution_direction
== EXEC_REVERSE
)
1821 printf_filtered (_("Run back to call of "));
1823 printf_filtered (_("Run till exit from "));
1825 print_stack_frame (get_selected_frame (NULL
), 1, LOCATION
, 0);
1828 if (execution_direction
== EXEC_REVERSE
)
1829 finish_backward (function
);
1831 finish_forward (function
, frame
);
1836 program_info (char *args
, int from_tty
)
1840 struct thread_info
*tp
;
1843 if (!target_has_execution
)
1845 printf_filtered (_("The program being debugged is not being run.\n"));
1850 ptid
= inferior_ptid
;
1853 struct target_waitstatus ws
;
1855 get_last_target_status (&ptid
, &ws
);
1858 if (ptid_equal (ptid
, null_ptid
) || is_exited (ptid
))
1859 error (_("Invalid selected thread."));
1860 else if (is_running (ptid
))
1861 error (_("Selected thread is running."));
1863 tp
= find_thread_ptid (ptid
);
1864 bs
= tp
->control
.stop_bpstat
;
1865 stat
= bpstat_num (&bs
, &num
);
1867 target_files_info ();
1868 printf_filtered (_("Program stopped at %s.\n"),
1869 paddress (target_gdbarch (), stop_pc
));
1870 if (tp
->control
.stop_step
)
1871 printf_filtered (_("It stopped after being stepped.\n"));
1874 /* There may be several breakpoints in the same place, so this
1875 isn't as strange as it seems. */
1880 printf_filtered (_("It stopped at a breakpoint "
1881 "that has since been deleted.\n"));
1884 printf_filtered (_("It stopped at breakpoint %d.\n"), num
);
1885 stat
= bpstat_num (&bs
, &num
);
1888 else if (tp
->suspend
.stop_signal
!= GDB_SIGNAL_0
)
1890 printf_filtered (_("It stopped with signal %s, %s.\n"),
1891 gdb_signal_to_name (tp
->suspend
.stop_signal
),
1892 gdb_signal_to_string (tp
->suspend
.stop_signal
));
1897 printf_filtered (_("Type \"info stack\" or \"info "
1898 "registers\" for more information.\n"));
1903 environment_info (char *var
, int from_tty
)
1907 char *val
= get_in_environ (current_inferior ()->environment
, var
);
1911 puts_filtered (var
);
1912 puts_filtered (" = ");
1913 puts_filtered (val
);
1914 puts_filtered ("\n");
1918 puts_filtered ("Environment variable \"");
1919 puts_filtered (var
);
1920 puts_filtered ("\" not defined.\n");
1925 char **vector
= environ_vector (current_inferior ()->environment
);
1929 puts_filtered (*vector
++);
1930 puts_filtered ("\n");
1936 set_environment_command (char *arg
, int from_tty
)
1938 char *p
, *val
, *var
;
1942 error_no_arg (_("environment variable and value"));
1944 /* Find seperation between variable name and value. */
1945 p
= (char *) strchr (arg
, '=');
1946 val
= (char *) strchr (arg
, ' ');
1948 if (p
!= 0 && val
!= 0)
1950 /* We have both a space and an equals. If the space is before the
1951 equals, walk forward over the spaces til we see a nonspace
1952 (possibly the equals). */
1957 /* Now if the = is after the char following the spaces,
1958 take the char following the spaces. */
1962 else if (val
!= 0 && p
== 0)
1966 error_no_arg (_("environment variable to set"));
1968 if (p
== 0 || p
[1] == 0)
1972 p
= arg
+ strlen (arg
); /* So that savestring below will work. */
1976 /* Not setting variable value to null. */
1978 while (*val
== ' ' || *val
== '\t')
1982 while (p
!= arg
&& (p
[-1] == ' ' || p
[-1] == '\t'))
1985 var
= savestring (arg
, p
- arg
);
1988 printf_filtered (_("Setting environment variable "
1989 "\"%s\" to null value.\n"),
1991 set_in_environ (current_inferior ()->environment
, var
, "");
1994 set_in_environ (current_inferior ()->environment
, var
, val
);
1999 unset_environment_command (char *var
, int from_tty
)
2003 /* If there is no argument, delete all environment variables.
2004 Ask for confirmation if reading from the terminal. */
2005 if (!from_tty
|| query (_("Delete all environment variables? ")))
2007 free_environ (current_inferior ()->environment
);
2008 current_inferior ()->environment
= make_environ ();
2012 unset_in_environ (current_inferior ()->environment
, var
);
2015 /* Handle the execution path (PATH variable). */
2017 static const char path_var_name
[] = "PATH";
2020 path_info (char *args
, int from_tty
)
2022 puts_filtered ("Executable and object file path: ");
2023 puts_filtered (get_in_environ (current_inferior ()->environment
,
2025 puts_filtered ("\n");
2028 /* Add zero or more directories to the front of the execution path. */
2031 path_command (char *dirname
, int from_tty
)
2037 env
= get_in_environ (current_inferior ()->environment
, path_var_name
);
2038 /* Can be null if path is not set. */
2041 exec_path
= xstrdup (env
);
2042 mod_path (dirname
, &exec_path
);
2043 set_in_environ (current_inferior ()->environment
, path_var_name
, exec_path
);
2046 path_info ((char *) NULL
, from_tty
);
2050 /* Print out the register NAME with value VAL, to FILE, in the default
2054 default_print_one_register_info (struct ui_file
*file
,
2058 struct type
*regtype
= value_type (val
);
2059 int print_raw_format
;
2061 fputs_filtered (name
, file
);
2062 print_spaces_filtered (15 - strlen (name
), file
);
2064 print_raw_format
= (value_entirely_available (val
)
2065 && !value_optimized_out (val
));
2067 /* If virtual format is floating, print it that way, and in raw
2069 if (TYPE_CODE (regtype
) == TYPE_CODE_FLT
2070 || TYPE_CODE (regtype
) == TYPE_CODE_DECFLOAT
)
2073 struct value_print_options opts
;
2074 const gdb_byte
*valaddr
= value_contents_for_printing (val
);
2075 enum bfd_endian byte_order
= gdbarch_byte_order (get_type_arch (regtype
));
2077 get_user_print_options (&opts
);
2081 value_contents_for_printing (val
),
2082 value_embedded_offset (val
), 0,
2083 file
, 0, val
, &opts
, current_language
);
2085 if (print_raw_format
)
2087 fprintf_filtered (file
, "\t(raw ");
2088 print_hex_chars (file
, valaddr
, TYPE_LENGTH (regtype
), byte_order
);
2089 fprintf_filtered (file
, ")");
2094 struct value_print_options opts
;
2096 /* Print the register in hex. */
2097 get_formatted_print_options (&opts
, 'x');
2100 value_contents_for_printing (val
),
2101 value_embedded_offset (val
), 0,
2102 file
, 0, val
, &opts
, current_language
);
2103 /* If not a vector register, print it also according to its
2105 if (print_raw_format
&& TYPE_VECTOR (regtype
) == 0)
2107 get_user_print_options (&opts
);
2109 fprintf_filtered (file
, "\t");
2111 value_contents_for_printing (val
),
2112 value_embedded_offset (val
), 0,
2113 file
, 0, val
, &opts
, current_language
);
2117 fprintf_filtered (file
, "\n");
2120 /* Print out the machine register regnum. If regnum is -1, print all
2121 registers (print_all == 1) or all non-float and non-vector
2122 registers (print_all == 0).
2124 For most machines, having all_registers_info() print the
2125 register(s) one per line is good enough. If a different format is
2126 required, (eg, for MIPS or Pyramid 90x, which both have lots of
2127 regs), or there is an existing convention for showing all the
2128 registers, define the architecture method PRINT_REGISTERS_INFO to
2129 provide that format. */
2132 default_print_registers_info (struct gdbarch
*gdbarch
,
2133 struct ui_file
*file
,
2134 struct frame_info
*frame
,
2135 int regnum
, int print_all
)
2138 const int numregs
= gdbarch_num_regs (gdbarch
)
2139 + gdbarch_num_pseudo_regs (gdbarch
);
2141 for (i
= 0; i
< numregs
; i
++)
2143 /* Decide between printing all regs, non-float / vector regs, or
2149 if (!gdbarch_register_reggroup_p (gdbarch
, i
, all_reggroup
))
2154 if (!gdbarch_register_reggroup_p (gdbarch
, i
, general_reggroup
))
2164 /* If the register name is empty, it is undefined for this
2165 processor, so don't display anything. */
2166 if (gdbarch_register_name (gdbarch
, i
) == NULL
2167 || *(gdbarch_register_name (gdbarch
, i
)) == '\0')
2170 default_print_one_register_info (file
,
2171 gdbarch_register_name (gdbarch
, i
),
2172 value_of_register (i
, frame
));
2177 registers_info (char *addr_exp
, int fpregs
)
2179 struct frame_info
*frame
;
2180 struct gdbarch
*gdbarch
;
2182 if (!target_has_registers
)
2183 error (_("The program has no registers now."));
2184 frame
= get_selected_frame (NULL
);
2185 gdbarch
= get_frame_arch (frame
);
2189 gdbarch_print_registers_info (gdbarch
, gdb_stdout
,
2194 while (*addr_exp
!= '\0')
2199 /* Skip leading white space. */
2200 addr_exp
= skip_spaces (addr_exp
);
2202 /* Discard any leading ``$''. Check that there is something
2203 resembling a register following it. */
2204 if (addr_exp
[0] == '$')
2206 if (isspace ((*addr_exp
)) || (*addr_exp
) == '\0')
2207 error (_("Missing register name"));
2209 /* Find the start/end of this register name/num/group. */
2211 while ((*addr_exp
) != '\0' && !isspace ((*addr_exp
)))
2215 /* Figure out what we've found and display it. */
2217 /* A register name? */
2219 int regnum
= user_reg_map_name_to_regnum (gdbarch
, start
, end
- start
);
2223 /* User registers lie completely outside of the range of
2224 normal registers. Catch them early so that the target
2226 if (regnum
>= gdbarch_num_regs (gdbarch
)
2227 + gdbarch_num_pseudo_regs (gdbarch
))
2229 struct value
*regval
= value_of_user_reg (regnum
, frame
);
2230 const char *regname
= user_reg_map_regnum_to_name (gdbarch
,
2233 /* Print in the same fashion
2234 gdbarch_print_registers_info's default
2235 implementation prints. */
2236 default_print_one_register_info (gdb_stdout
,
2241 gdbarch_print_registers_info (gdbarch
, gdb_stdout
,
2242 frame
, regnum
, fpregs
);
2247 /* A register group? */
2249 struct reggroup
*group
;
2251 for (group
= reggroup_next (gdbarch
, NULL
);
2253 group
= reggroup_next (gdbarch
, group
))
2255 /* Don't bother with a length check. Should the user
2256 enter a short register group name, go with the first
2257 group that matches. */
2258 if (strncmp (start
, reggroup_name (group
), end
- start
) == 0)
2266 regnum
< gdbarch_num_regs (gdbarch
)
2267 + gdbarch_num_pseudo_regs (gdbarch
);
2270 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, group
))
2271 gdbarch_print_registers_info (gdbarch
,
2279 /* Nothing matched. */
2280 error (_("Invalid register `%.*s'"), (int) (end
- start
), start
);
2285 all_registers_info (char *addr_exp
, int from_tty
)
2287 registers_info (addr_exp
, 1);
2291 nofp_registers_info (char *addr_exp
, int from_tty
)
2293 registers_info (addr_exp
, 0);
2297 print_vector_info (struct ui_file
*file
,
2298 struct frame_info
*frame
, const char *args
)
2300 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
2302 if (gdbarch_print_vector_info_p (gdbarch
))
2303 gdbarch_print_vector_info (gdbarch
, file
, frame
, args
);
2307 int printed_something
= 0;
2310 regnum
< gdbarch_num_regs (gdbarch
)
2311 + gdbarch_num_pseudo_regs (gdbarch
);
2314 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, vector_reggroup
))
2316 printed_something
= 1;
2317 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
2320 if (!printed_something
)
2321 fprintf_filtered (file
, "No vector information\n");
2326 vector_info (char *args
, int from_tty
)
2328 if (!target_has_registers
)
2329 error (_("The program has no registers now."));
2331 print_vector_info (gdb_stdout
, get_selected_frame (NULL
), args
);
2334 /* Kill the inferior process. Make us have no inferior. */
2337 kill_command (char *arg
, int from_tty
)
2339 /* FIXME: This should not really be inferior_ptid (or target_has_execution).
2340 It should be a distinct flag that indicates that a target is active, cuz
2341 some targets don't have processes! */
2343 if (ptid_equal (inferior_ptid
, null_ptid
))
2344 error (_("The program is not being run."));
2345 if (!query (_("Kill the program being debugged? ")))
2346 error (_("Not confirmed."));
2349 /* If we still have other inferiors to debug, then don't mess with
2350 with their threads. */
2351 if (!have_inferiors ())
2353 init_thread_list (); /* Destroy thread info. */
2355 /* Killing off the inferior can leave us with a core file. If
2356 so, print the state we are left in. */
2357 if (target_has_stack
)
2359 printf_filtered (_("In %s,\n"), target_longname
);
2360 print_stack_frame (get_selected_frame (NULL
), 1, SRC_AND_LOC
, 1);
2363 bfd_cache_close_all ();
2366 /* Used in `attach&' command. ARG is a point to an integer
2367 representing a process id. Proceed threads of this process iff
2368 they stopped due to debugger request, and when they did, they
2369 reported a clean stop (GDB_SIGNAL_0). Do not proceed threads
2370 that have been explicitly been told to stop. */
2373 proceed_after_attach_callback (struct thread_info
*thread
,
2376 int pid
= * (int *) arg
;
2378 if (ptid_get_pid (thread
->ptid
) == pid
2379 && !is_exited (thread
->ptid
)
2380 && !is_executing (thread
->ptid
)
2381 && !thread
->stop_requested
2382 && thread
->suspend
.stop_signal
== GDB_SIGNAL_0
)
2384 switch_to_thread (thread
->ptid
);
2385 clear_proceed_status (0);
2386 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
2393 proceed_after_attach (int pid
)
2395 /* Don't error out if the current thread is running, because
2396 there may be other stopped threads. */
2397 struct cleanup
*old_chain
;
2399 /* Backup current thread and selected frame. */
2400 old_chain
= make_cleanup_restore_current_thread ();
2402 iterate_over_threads (proceed_after_attach_callback
, &pid
);
2404 /* Restore selected ptid. */
2405 do_cleanups (old_chain
);
2408 /* attach_command --
2409 takes a program started up outside of gdb and ``attaches'' to it.
2410 This stops it cold in its tracks and allows us to start debugging it.
2411 and wait for the trace-trap that results from attaching. */
2414 attach_command_post_wait (char *args
, int from_tty
, int async_exec
)
2417 char *full_exec_path
= NULL
;
2418 struct inferior
*inferior
;
2420 inferior
= current_inferior ();
2421 inferior
->control
.stop_soon
= NO_STOP_QUIETLY
;
2423 /* If no exec file is yet known, try to determine it from the
2425 exec_file
= (char *) get_exec_file (0);
2428 exec_file
= target_pid_to_exec_file (ptid_get_pid (inferior_ptid
));
2431 /* It's possible we don't have a full path, but rather just a
2432 filename. Some targets, such as HP-UX, don't provide the
2435 Attempt to qualify the filename against the source path.
2436 (If that fails, we'll just fall back on the original
2437 filename. Not much more we can do...) */
2439 if (!source_full_path_of (exec_file
, &full_exec_path
))
2440 full_exec_path
= xstrdup (exec_file
);
2442 exec_file_attach (full_exec_path
, from_tty
);
2443 symbol_file_add_main (full_exec_path
, from_tty
);
2448 reopen_exec_file ();
2452 /* Take any necessary post-attaching actions for this platform. */
2453 target_post_attach (ptid_get_pid (inferior_ptid
));
2455 post_create_inferior (¤t_target
, from_tty
);
2459 /* The user requested an `attach&', so be sure to leave threads
2460 that didn't get a signal running. */
2462 /* Immediatelly resume all suspended threads of this inferior,
2463 and this inferior only. This should have no effect on
2464 already running threads. If a thread has been stopped with a
2465 signal, leave it be. */
2467 proceed_after_attach (inferior
->pid
);
2470 if (inferior_thread ()->suspend
.stop_signal
== GDB_SIGNAL_0
)
2472 clear_proceed_status (0);
2473 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
2479 /* The user requested a plain `attach', so be sure to leave
2480 the inferior stopped. */
2482 if (target_can_async_p ())
2483 async_enable_stdin ();
2485 /* At least the current thread is already stopped. */
2487 /* In all-stop, by definition, all threads have to be already
2488 stopped at this point. In non-stop, however, although the
2489 selected thread is stopped, others may still be executing.
2490 Be sure to explicitly stop all threads of the process. This
2491 should have no effect on already stopped threads. */
2493 target_stop (pid_to_ptid (inferior
->pid
));
2495 /* Tell the user/frontend where we're stopped. */
2497 if (deprecated_attach_hook
)
2498 deprecated_attach_hook ();
2502 struct attach_command_continuation_args
2510 attach_command_continuation (void *args
, int err
)
2512 struct attach_command_continuation_args
*a
= args
;
2517 attach_command_post_wait (a
->args
, a
->from_tty
, a
->async_exec
);
2521 attach_command_continuation_free_args (void *args
)
2523 struct attach_command_continuation_args
*a
= args
;
2530 attach_command (char *args
, int from_tty
)
2533 struct target_ops
*attach_target
;
2535 dont_repeat (); /* Not for the faint of heart */
2537 if (gdbarch_has_global_solist (target_gdbarch ()))
2538 /* Don't complain if all processes share the same symbol
2541 else if (target_has_execution
)
2543 if (query (_("A program is being debugged already. Kill it? ")))
2546 error (_("Not killed."));
2549 /* Clean up any leftovers from other runs. Some other things from
2550 this function should probably be moved into target_pre_inferior. */
2551 target_pre_inferior (from_tty
);
2554 async_exec
= strip_bg_char (&args
);
2556 attach_target
= find_attach_target ();
2558 prepare_execution_command (attach_target
, async_exec
);
2560 if (non_stop
&& !attach_target
->to_supports_non_stop (attach_target
))
2561 error (_("Cannot attach to this target in non-stop mode"));
2563 attach_target
->to_attach (attach_target
, args
, from_tty
);
2564 /* to_attach should push the target, so after this point we
2565 shouldn't refer to attach_target again. */
2566 attach_target
= NULL
;
2568 /* Set up the "saved terminal modes" of the inferior
2569 based on what modes we are starting it with. */
2570 target_terminal_init ();
2572 /* Install inferior's terminal modes. This may look like a no-op,
2573 as we've just saved them above, however, this does more than
2574 restore terminal settings:
2576 - installs a SIGINT handler that forwards SIGINT to the inferior.
2577 Otherwise a Ctrl-C pressed just while waiting for the initial
2578 stop would end up as a spurious Quit.
2580 - removes stdin from the event loop, which we need if attaching
2581 in the foreground, otherwise on targets that report an initial
2582 stop on attach (which are most) we'd process input/commands
2583 while we're in the event loop waiting for that stop. That is,
2584 before the attach continuation runs and the command is really
2586 target_terminal_inferior ();
2588 /* Set up execution context to know that we should return from
2589 wait_for_inferior as soon as the target reports a stop. */
2590 init_wait_for_inferior ();
2591 clear_proceed_status (0);
2595 /* If we find that the current thread isn't stopped, explicitly
2596 do so now, because we're going to install breakpoints and
2600 /* The user requested an `attach&'; stop just one thread. */
2601 target_stop (inferior_ptid
);
2603 /* The user requested an `attach', so stop all threads of this
2605 target_stop (pid_to_ptid (ptid_get_pid (inferior_ptid
)));
2608 /* Some system don't generate traps when attaching to inferior.
2609 E.g. Mach 3 or GNU hurd. */
2610 if (!target_attach_no_wait
)
2612 struct inferior
*inferior
= current_inferior ();
2614 /* Careful here. See comments in inferior.h. Basically some
2615 OSes don't ignore SIGSTOPs on continue requests anymore. We
2616 need a way for handle_inferior_event to reset the stop_signal
2617 variable after an attach, and this is what
2618 STOP_QUIETLY_NO_SIGSTOP is for. */
2619 inferior
->control
.stop_soon
= STOP_QUIETLY_NO_SIGSTOP
;
2621 if (target_can_async_p ())
2623 /* sync_execution mode. Wait for stop. */
2624 struct attach_command_continuation_args
*a
;
2626 a
= xmalloc (sizeof (*a
));
2627 a
->args
= xstrdup (args
);
2628 a
->from_tty
= from_tty
;
2629 a
->async_exec
= async_exec
;
2630 add_inferior_continuation (attach_command_continuation
, a
,
2631 attach_command_continuation_free_args
);
2635 wait_for_inferior ();
2638 attach_command_post_wait (args
, from_tty
, async_exec
);
2641 /* We had just found out that the target was already attached to an
2642 inferior. PTID points at a thread of this new inferior, that is
2643 the most likely to be stopped right now, but not necessarily so.
2644 The new inferior is assumed to be already added to the inferior
2645 list at this point. If LEAVE_RUNNING, then leave the threads of
2646 this inferior running, except those we've explicitly seen reported
2650 notice_new_inferior (ptid_t ptid
, int leave_running
, int from_tty
)
2652 struct cleanup
* old_chain
;
2655 old_chain
= make_cleanup (null_cleanup
, NULL
);
2657 /* If in non-stop, leave threads as running as they were. If
2658 they're stopped for some reason other than us telling it to, the
2659 target reports a signal != GDB_SIGNAL_0. We don't try to
2660 resume threads with such a stop signal. */
2661 async_exec
= non_stop
;
2663 if (!ptid_equal (inferior_ptid
, null_ptid
))
2664 make_cleanup_restore_current_thread ();
2666 switch_to_thread (ptid
);
2668 /* When we "notice" a new inferior we need to do all the things we
2669 would normally do if we had just attached to it. */
2671 if (is_executing (inferior_ptid
))
2673 struct inferior
*inferior
= current_inferior ();
2675 /* We're going to install breakpoints, and poke at memory,
2676 ensure that the inferior is stopped for a moment while we do
2678 target_stop (inferior_ptid
);
2680 inferior
->control
.stop_soon
= STOP_QUIETLY_REMOTE
;
2682 /* Wait for stop before proceeding. */
2683 if (target_can_async_p ())
2685 struct attach_command_continuation_args
*a
;
2687 a
= xmalloc (sizeof (*a
));
2688 a
->args
= xstrdup ("");
2689 a
->from_tty
= from_tty
;
2690 a
->async_exec
= async_exec
;
2691 add_inferior_continuation (attach_command_continuation
, a
,
2692 attach_command_continuation_free_args
);
2694 do_cleanups (old_chain
);
2698 wait_for_inferior ();
2701 async_exec
= leave_running
;
2702 attach_command_post_wait ("" /* args */, from_tty
, async_exec
);
2704 do_cleanups (old_chain
);
2709 * takes a program previously attached to and detaches it.
2710 * The program resumes execution and will no longer stop
2711 * on signals, etc. We better not have left any breakpoints
2712 * in the program or it'll die when it hits one. For this
2713 * to work, it may be necessary for the process to have been
2714 * previously attached. It *might* work if the program was
2715 * started via the normal ptrace (PTRACE_TRACEME).
2719 detach_command (char *args
, int from_tty
)
2721 dont_repeat (); /* Not for the faint of heart. */
2723 if (ptid_equal (inferior_ptid
, null_ptid
))
2724 error (_("The program is not being run."));
2726 query_if_trace_running (from_tty
);
2728 disconnect_tracing ();
2730 target_detach (args
, from_tty
);
2732 /* If the solist is global across inferiors, don't clear it when we
2733 detach from a single inferior. */
2734 if (!gdbarch_has_global_solist (target_gdbarch ()))
2735 no_shared_libraries (NULL
, from_tty
);
2737 /* If we still have inferiors to debug, then don't mess with their
2739 if (!have_inferiors ())
2740 init_thread_list ();
2742 if (deprecated_detach_hook
)
2743 deprecated_detach_hook ();
2746 /* Disconnect from the current target without resuming it (leaving it
2747 waiting for a debugger).
2749 We'd better not have left any breakpoints in the program or the
2750 next debugger will get confused. Currently only supported for some
2751 remote targets, since the normal attach mechanisms don't work on
2752 stopped processes on some native platforms (e.g. GNU/Linux). */
2755 disconnect_command (char *args
, int from_tty
)
2757 dont_repeat (); /* Not for the faint of heart. */
2758 query_if_trace_running (from_tty
);
2759 disconnect_tracing ();
2760 target_disconnect (args
, from_tty
);
2761 no_shared_libraries (NULL
, from_tty
);
2762 init_thread_list ();
2763 if (deprecated_detach_hook
)
2764 deprecated_detach_hook ();
2768 interrupt_target_1 (int all_threads
)
2773 ptid
= minus_one_ptid
;
2775 ptid
= inferior_ptid
;
2778 /* Tag the thread as having been explicitly requested to stop, so
2779 other parts of gdb know not to resume this thread automatically,
2780 if it was stopped due to an internal event. Limit this to
2781 non-stop mode, as when debugging a multi-threaded application in
2782 all-stop mode, we will only get one stop event --- it's undefined
2783 which thread will report the event. */
2785 set_stop_requested (ptid
, 1);
2789 Stop the execution of the target while running in async mode, in
2790 the backgound. In all-stop, stop the whole process. In non-stop
2791 mode, stop the current thread only by default, or stop all threads
2792 if the `-a' switch is used. */
2795 interrupt_command (char *args
, int from_tty
)
2797 if (target_can_async_p ())
2799 int all_threads
= 0;
2801 dont_repeat (); /* Not for the faint of heart. */
2804 && strncmp (args
, "-a", sizeof ("-a") - 1) == 0)
2807 if (!non_stop
&& all_threads
)
2808 error (_("-a is meaningless in all-stop mode."));
2810 interrupt_target_1 (all_threads
);
2815 print_float_info (struct ui_file
*file
,
2816 struct frame_info
*frame
, const char *args
)
2818 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
2820 if (gdbarch_print_float_info_p (gdbarch
))
2821 gdbarch_print_float_info (gdbarch
, file
, frame
, args
);
2825 int printed_something
= 0;
2828 regnum
< gdbarch_num_regs (gdbarch
)
2829 + gdbarch_num_pseudo_regs (gdbarch
);
2832 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, float_reggroup
))
2834 printed_something
= 1;
2835 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
2838 if (!printed_something
)
2839 fprintf_filtered (file
, "No floating-point info "
2840 "available for this processor.\n");
2845 float_info (char *args
, int from_tty
)
2847 if (!target_has_registers
)
2848 error (_("The program has no registers now."));
2850 print_float_info (gdb_stdout
, get_selected_frame (NULL
), args
);
2854 unset_command (char *args
, int from_tty
)
2856 printf_filtered (_("\"unset\" must be followed by the "
2857 "name of an unset subcommand.\n"));
2858 help_list (unsetlist
, "unset ", all_commands
, gdb_stdout
);
2861 /* Implement `info proc' family of commands. */
2864 info_proc_cmd_1 (char *args
, enum info_proc_what what
, int from_tty
)
2866 struct gdbarch
*gdbarch
= get_current_arch ();
2868 if (!target_info_proc (args
, what
))
2870 if (gdbarch_info_proc_p (gdbarch
))
2871 gdbarch_info_proc (gdbarch
, args
, what
);
2873 error (_("Not supported on this target."));
2877 /* Implement `info proc' when given without any futher parameters. */
2880 info_proc_cmd (char *args
, int from_tty
)
2882 info_proc_cmd_1 (args
, IP_MINIMAL
, from_tty
);
2885 /* Implement `info proc mappings'. */
2888 info_proc_cmd_mappings (char *args
, int from_tty
)
2890 info_proc_cmd_1 (args
, IP_MAPPINGS
, from_tty
);
2893 /* Implement `info proc stat'. */
2896 info_proc_cmd_stat (char *args
, int from_tty
)
2898 info_proc_cmd_1 (args
, IP_STAT
, from_tty
);
2901 /* Implement `info proc status'. */
2904 info_proc_cmd_status (char *args
, int from_tty
)
2906 info_proc_cmd_1 (args
, IP_STATUS
, from_tty
);
2909 /* Implement `info proc cwd'. */
2912 info_proc_cmd_cwd (char *args
, int from_tty
)
2914 info_proc_cmd_1 (args
, IP_CWD
, from_tty
);
2917 /* Implement `info proc cmdline'. */
2920 info_proc_cmd_cmdline (char *args
, int from_tty
)
2922 info_proc_cmd_1 (args
, IP_CMDLINE
, from_tty
);
2925 /* Implement `info proc exe'. */
2928 info_proc_cmd_exe (char *args
, int from_tty
)
2930 info_proc_cmd_1 (args
, IP_EXE
, from_tty
);
2933 /* Implement `info proc all'. */
2936 info_proc_cmd_all (char *args
, int from_tty
)
2938 info_proc_cmd_1 (args
, IP_ALL
, from_tty
);
2942 _initialize_infcmd (void)
2944 static struct cmd_list_element
*info_proc_cmdlist
;
2945 struct cmd_list_element
*c
= NULL
;
2946 const char *cmd_name
;
2948 /* Add the filename of the terminal connected to inferior I/O. */
2949 add_setshow_filename_cmd ("inferior-tty", class_run
,
2950 &inferior_io_terminal_scratch
, _("\
2951 Set terminal for future runs of program being debugged."), _("\
2952 Show terminal for future runs of program being debugged."), _("\
2953 Usage: set inferior-tty /dev/pts/1"),
2954 set_inferior_tty_command
,
2955 show_inferior_tty_command
,
2956 &setlist
, &showlist
);
2957 add_com_alias ("tty", "set inferior-tty", class_alias
, 0);
2960 add_setshow_string_noescape_cmd (cmd_name
, class_run
,
2961 &inferior_args_scratch
, _("\
2962 Set argument list to give program being debugged when it is started."), _("\
2963 Show argument list to give program being debugged when it is started."), _("\
2964 Follow this command with any number of args, to be passed to the program."),
2967 &setlist
, &showlist
);
2968 c
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
2969 gdb_assert (c
!= NULL
);
2970 set_cmd_completer (c
, filename_completer
);
2972 c
= add_cmd ("environment", no_class
, environment_info
, _("\
2973 The environment to give the program, or one variable's value.\n\
2974 With an argument VAR, prints the value of environment variable VAR to\n\
2975 give the program being debugged. With no arguments, prints the entire\n\
2976 environment to be given to the program."), &showlist
);
2977 set_cmd_completer (c
, noop_completer
);
2979 add_prefix_cmd ("unset", no_class
, unset_command
,
2980 _("Complement to certain \"set\" commands."),
2981 &unsetlist
, "unset ", 0, &cmdlist
);
2983 c
= add_cmd ("environment", class_run
, unset_environment_command
, _("\
2984 Cancel environment variable VAR for the program.\n\
2985 This does not affect the program until the next \"run\" command."),
2987 set_cmd_completer (c
, noop_completer
);
2989 c
= add_cmd ("environment", class_run
, set_environment_command
, _("\
2990 Set environment variable value to give the program.\n\
2991 Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\
2992 VALUES of environment variables are uninterpreted strings.\n\
2993 This does not affect the program until the next \"run\" command."),
2995 set_cmd_completer (c
, noop_completer
);
2997 c
= add_com ("path", class_files
, path_command
, _("\
2998 Add directory DIR(s) to beginning of search path for object files.\n\
2999 $cwd in the path means the current working directory.\n\
3000 This path is equivalent to the $PATH shell variable. It is a list of\n\
3001 directories, separated by colons. These directories are searched to find\n\
3002 fully linked executable files and separately compiled object files as \
3004 set_cmd_completer (c
, filename_completer
);
3006 c
= add_cmd ("paths", no_class
, path_info
, _("\
3007 Current search path for finding object files.\n\
3008 $cwd in the path means the current working directory.\n\
3009 This path is equivalent to the $PATH shell variable. It is a list of\n\
3010 directories, separated by colons. These directories are searched to find\n\
3011 fully linked executable files and separately compiled object files as \
3014 set_cmd_completer (c
, noop_completer
);
3016 add_prefix_cmd ("kill", class_run
, kill_command
,
3017 _("Kill execution of program being debugged."),
3018 &killlist
, "kill ", 0, &cmdlist
);
3020 add_com ("attach", class_run
, attach_command
, _("\
3021 Attach to a process or file outside of GDB.\n\
3022 This command attaches to another target, of the same type as your last\n\
3023 \"target\" command (\"info files\" will show your target stack).\n\
3024 The command may take as argument a process id or a device file.\n\
3025 For a process id, you must have permission to send the process a signal,\n\
3026 and it must have the same effective uid as the debugger.\n\
3027 When using \"attach\" with a process id, the debugger finds the\n\
3028 program running in the process, looking first in the current working\n\
3029 directory, or (if not found there) using the source file search path\n\
3030 (see the \"directory\" command). You can also use the \"file\" command\n\
3031 to specify the program, and to load its symbol table."));
3033 add_prefix_cmd ("detach", class_run
, detach_command
, _("\
3034 Detach a process or file previously attached.\n\
3035 If a process, it is no longer traced, and it continues its execution. If\n\
3036 you were debugging a file, the file is closed and gdb no longer accesses it."),
3037 &detachlist
, "detach ", 0, &cmdlist
);
3039 add_com ("disconnect", class_run
, disconnect_command
, _("\
3040 Disconnect from a target.\n\
3041 The target will wait for another debugger to connect. Not available for\n\
3044 c
= add_com ("signal", class_run
, signal_command
, _("\
3045 Continue program with the specified signal.\n\
3046 Usage: signal SIGNAL\n\
3047 The SIGNAL argument is processed the same as the handle command.\n\
3049 An argument of \"0\" means continue the program without sending it a signal.\n\
3050 This is useful in cases where the program stopped because of a signal,\n\
3051 and you want to resume the program while discarding the signal.\n\
3053 In a multi-threaded program the signal is delivered to, or discarded from,\n\
3054 the current thread only."));
3055 set_cmd_completer (c
, signal_completer
);
3057 c
= add_com ("queue-signal", class_run
, queue_signal_command
, _("\
3058 Queue a signal to be delivered to the current thread when it is resumed.\n\
3059 Usage: queue-signal SIGNAL\n\
3060 The SIGNAL argument is processed the same as the handle command.\n\
3061 It is an error if the handling state of SIGNAL is \"nopass\".\n\
3063 An argument of \"0\" means remove any currently queued signal from\n\
3064 the current thread. This is useful in cases where the program stopped\n\
3065 because of a signal, and you want to resume it while discarding the signal.\n\
3067 In a multi-threaded program the signal is queued with, or discarded from,\n\
3068 the current thread only."));
3069 set_cmd_completer (c
, signal_completer
);
3071 add_com ("stepi", class_run
, stepi_command
, _("\
3072 Step one instruction exactly.\n\
3074 Argument N means step N times (or till program stops for another \
3076 add_com_alias ("si", "stepi", class_alias
, 0);
3078 add_com ("nexti", class_run
, nexti_command
, _("\
3079 Step one instruction, but proceed through subroutine calls.\n\
3081 Argument N means step N times (or till program stops for another \
3083 add_com_alias ("ni", "nexti", class_alias
, 0);
3085 add_com ("finish", class_run
, finish_command
, _("\
3086 Execute until selected stack frame returns.\n\
3088 Upon return, the value returned is printed and put in the value history."));
3089 add_com_alias ("fin", "finish", class_run
, 1);
3091 add_com ("next", class_run
, next_command
, _("\
3092 Step program, proceeding through subroutine calls.\n\
3094 Unlike \"step\", if the current source line calls a subroutine,\n\
3095 this command does not enter the subroutine, but instead steps over\n\
3096 the call, in effect treating it as a single source line."));
3097 add_com_alias ("n", "next", class_run
, 1);
3099 add_com_alias ("S", "next", class_run
, 1);
3101 add_com ("step", class_run
, step_command
, _("\
3102 Step program until it reaches a different source line.\n\
3104 Argument N means step N times (or till program stops for another \
3106 add_com_alias ("s", "step", class_run
, 1);
3108 c
= add_com ("until", class_run
, until_command
, _("\
3109 Execute until the program reaches a source line greater than the current\n\
3110 or a specified location (same args as break command) within the current \
3112 set_cmd_completer (c
, location_completer
);
3113 add_com_alias ("u", "until", class_run
, 1);
3115 c
= add_com ("advance", class_run
, advance_command
, _("\
3116 Continue the program up to the given location (same form as args for break \
3118 Execution will also stop upon exit from the current stack frame."));
3119 set_cmd_completer (c
, location_completer
);
3121 c
= add_com ("jump", class_run
, jump_command
, _("\
3122 Continue program being debugged at specified line or address.\n\
3123 Usage: jump <location>\n\
3124 Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\
3125 for an address to start at."));
3126 set_cmd_completer (c
, location_completer
);
3127 add_com_alias ("j", "jump", class_run
, 1);
3131 c
= add_com ("go", class_run
, go_command
, _("\
3132 Usage: go <location>\n\
3133 Continue program being debugged, stopping at specified line or \n\
3135 Give as argument either LINENUM or *ADDR, where ADDR is an \n\
3136 expression for an address to start at.\n\
3137 This command is a combination of tbreak and jump."));
3138 set_cmd_completer (c
, location_completer
);
3142 add_com_alias ("g", "go", class_run
, 1);
3144 add_com ("continue", class_run
, continue_command
, _("\
3145 Continue program being debugged, after signal or breakpoint.\n\
3146 Usage: continue [N]\n\
3147 If proceeding from breakpoint, a number N may be used as an argument,\n\
3148 which means to set the ignore count of that breakpoint to N - 1 (so that\n\
3149 the breakpoint won't break until the Nth time it is reached).\n\
3151 If non-stop mode is enabled, continue only the current thread,\n\
3152 otherwise all the threads in the program are continued. To \n\
3153 continue all stopped threads in non-stop mode, use the -a option.\n\
3154 Specifying -a and an ignore count simultaneously is an error."));
3155 add_com_alias ("c", "cont", class_run
, 1);
3156 add_com_alias ("fg", "cont", class_run
, 1);
3158 c
= add_com ("run", class_run
, run_command
, _("\
3159 Start debugged program. You may specify arguments to give it.\n\
3160 Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\
3161 Input and output redirection with \">\", \"<\", or \">>\" are also \
3163 With no arguments, uses arguments last specified (with \"run\" \
3164 or \"set args\").\n\
3165 To cancel previous arguments and run with no arguments,\n\
3166 use \"set args\" without arguments."));
3167 set_cmd_completer (c
, filename_completer
);
3168 add_com_alias ("r", "run", class_run
, 1);
3170 add_com ("R", class_run
, run_no_args_command
,
3171 _("Start debugged program with no arguments."));
3173 c
= add_com ("start", class_run
, start_command
, _("\
3174 Run the debugged program until the beginning of the main procedure.\n\
3175 You may specify arguments to give to your program, just as with the\n\
3176 \"run\" command."));
3177 set_cmd_completer (c
, filename_completer
);
3179 add_com ("interrupt", class_run
, interrupt_command
,
3180 _("Interrupt the execution of the debugged program.\n\
3181 If non-stop mode is enabled, interrupt only the current thread,\n\
3182 otherwise all the threads in the program are stopped. To \n\
3183 interrupt all running threads in non-stop mode, use the -a option."));
3185 add_info ("registers", nofp_registers_info
, _("\
3186 List of integer registers and their contents, for selected stack frame.\n\
3187 Register name as argument means describe only that register."));
3188 add_info_alias ("r", "registers", 1);
3191 add_com ("lr", class_info
, nofp_registers_info
, _("\
3192 List of integer registers and their contents, for selected stack frame.\n\
3193 Register name as argument means describe only that register."));
3194 add_info ("all-registers", all_registers_info
, _("\
3195 List of all registers and their contents, for selected stack frame.\n\
3196 Register name as argument means describe only that register."));
3198 add_info ("program", program_info
,
3199 _("Execution status of the program."));
3201 add_info ("float", float_info
,
3202 _("Print the status of the floating point unit\n"));
3204 add_info ("vector", vector_info
,
3205 _("Print the status of the vector unit\n"));
3207 add_prefix_cmd ("proc", class_info
, info_proc_cmd
,
3209 Show /proc process information about any running process.\n\
3210 Specify any process id, or use the program being debugged by default."),
3211 &info_proc_cmdlist
, "info proc ",
3212 1/*allow-unknown*/, &infolist
);
3214 add_cmd ("mappings", class_info
, info_proc_cmd_mappings
, _("\
3215 List of mapped memory regions."),
3216 &info_proc_cmdlist
);
3218 add_cmd ("stat", class_info
, info_proc_cmd_stat
, _("\
3219 List process info from /proc/PID/stat."),
3220 &info_proc_cmdlist
);
3222 add_cmd ("status", class_info
, info_proc_cmd_status
, _("\
3223 List process info from /proc/PID/status."),
3224 &info_proc_cmdlist
);
3226 add_cmd ("cwd", class_info
, info_proc_cmd_cwd
, _("\
3227 List current working directory of the process."),
3228 &info_proc_cmdlist
);
3230 add_cmd ("cmdline", class_info
, info_proc_cmd_cmdline
, _("\
3231 List command line arguments of the process."),
3232 &info_proc_cmdlist
);
3234 add_cmd ("exe", class_info
, info_proc_cmd_exe
, _("\
3235 List absolute filename for executable of the process."),
3236 &info_proc_cmdlist
);
3238 add_cmd ("all", class_info
, info_proc_cmd_all
, _("\
3239 List all available /proc info."),
3240 &info_proc_cmdlist
);