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"
45 #include "gdb_assert.h"
47 #include "target-descriptions.h"
48 #include "user-regs.h"
49 #include "exceptions.h"
50 #include "cli/cli-decode.h"
51 #include "gdbthread.h"
53 #include "inline-frame.h"
54 #include "tracepoint.h"
56 #include "continuations.h"
58 #include "cli/cli-utils.h"
60 /* Local functions: */
62 static void nofp_registers_info (char *, int);
64 static void print_return_value (struct value
*function
,
65 struct type
*value_type
);
67 static void until_next_command (int);
69 static void until_command (char *, int);
71 static void path_info (char *, int);
73 static void path_command (char *, int);
75 static void unset_command (char *, int);
77 static void float_info (char *, int);
79 static void disconnect_command (char *, int);
81 static void unset_environment_command (char *, int);
83 static void set_environment_command (char *, int);
85 static void environment_info (char *, int);
87 static void program_info (char *, int);
89 static void finish_command (char *, int);
91 static void signal_command (char *, int);
93 static void jump_command (char *, int);
95 static void step_1 (int, int, char *);
96 static void step_once (int skip_subroutines
, int single_inst
,
97 int count
, int thread
);
99 static void next_command (char *, int);
101 static void step_command (char *, int);
103 static void run_command (char *, int);
105 static void run_no_args_command (char *args
, int from_tty
);
107 static void go_command (char *line_no
, int from_tty
);
109 static int strip_bg_char (char **);
111 void _initialize_infcmd (void);
113 #define ERROR_NO_INFERIOR \
114 if (!target_has_execution) error (_("The program is not being run."));
116 /* Scratch area where string containing arguments to give to the
117 program will be stored by 'set args'. As soon as anything is
118 stored, notice_args_set will move it into per-inferior storage.
119 Arguments are separated by spaces. Empty string (pointer to '\0')
122 static char *inferior_args_scratch
;
124 /* Scratch area where 'set inferior-tty' will store user-provided value.
125 We'll immediate copy it into per-inferior storage. */
127 static char *inferior_io_terminal_scratch
;
129 /* Pid of our debugged inferior, or 0 if no inferior now.
130 Since various parts of infrun.c test this to see whether there is a program
131 being debugged it should be nonzero (currently 3 is used) for remote
134 ptid_t inferior_ptid
;
136 /* Address at which inferior stopped. */
140 /* Nonzero if stopped due to completion of a stack dummy routine. */
142 enum stop_stack_kind stop_stack_dummy
;
144 /* Nonzero if stopped due to a random (unexpected) signal in inferior
147 int stopped_by_random_signal
;
149 /* See inferior.h. */
151 int startup_with_shell
= 1;
154 /* Accessor routines. */
156 /* Set the io terminal for the current inferior. Ownership of
157 TERMINAL_NAME is not transferred. */
160 set_inferior_io_terminal (const char *terminal_name
)
162 xfree (current_inferior ()->terminal
);
163 current_inferior ()->terminal
= terminal_name
? xstrdup (terminal_name
) : 0;
167 get_inferior_io_terminal (void)
169 return current_inferior ()->terminal
;
173 set_inferior_tty_command (char *args
, int from_tty
,
174 struct cmd_list_element
*c
)
176 /* CLI has assigned the user-provided value to inferior_io_terminal_scratch.
177 Now route it to current inferior. */
178 set_inferior_io_terminal (inferior_io_terminal_scratch
);
182 show_inferior_tty_command (struct ui_file
*file
, int from_tty
,
183 struct cmd_list_element
*c
, const char *value
)
185 /* Note that we ignore the passed-in value in favor of computing it
187 const char *inferior_io_terminal
= get_inferior_io_terminal ();
189 if (inferior_io_terminal
== NULL
)
190 inferior_io_terminal
= "";
191 fprintf_filtered (gdb_stdout
,
192 _("Terminal for future runs of program being debugged "
193 "is \"%s\".\n"), inferior_io_terminal
);
197 get_inferior_args (void)
199 if (current_inferior ()->argc
!= 0)
203 n
= construct_inferior_arguments (current_inferior ()->argc
,
204 current_inferior ()->argv
);
205 set_inferior_args (n
);
209 if (current_inferior ()->args
== NULL
)
210 current_inferior ()->args
= xstrdup ("");
212 return current_inferior ()->args
;
215 /* Set the arguments for the current inferior. Ownership of
216 NEWARGS is not transferred. */
219 set_inferior_args (char *newargs
)
221 xfree (current_inferior ()->args
);
222 current_inferior ()->args
= newargs
? xstrdup (newargs
) : NULL
;
223 current_inferior ()->argc
= 0;
224 current_inferior ()->argv
= 0;
228 set_inferior_args_vector (int argc
, char **argv
)
230 current_inferior ()->argc
= argc
;
231 current_inferior ()->argv
= argv
;
234 /* 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. */
245 show_args_command (struct ui_file
*file
, int from_tty
,
246 struct cmd_list_element
*c
, const char *value
)
248 /* Note that we ignore the passed-in value in favor of computing it
250 deprecated_show_value_hack (file
, from_tty
, c
, get_inferior_args ());
254 /* Compute command-line string given argument vector. This does the
255 same shell processing as fork_inferior. */
257 construct_inferior_arguments (int argc
, char **argv
)
261 if (startup_with_shell
)
264 /* This holds all the characters considered special to the
266 char *special
= "\"!&*|[]{}<>?`~^=;, \t\n";
267 const char quote
= '"';
269 /* This holds all the characters considered special to the
270 typical Unix shells. We include `^' because the SunOS
271 /bin/sh treats it as a synonym for `|'. */
272 char *special
= "\"!#$&*()\\|[]{}<>?'`~^; \t\n";
273 const char quote
= '\'';
279 /* We over-compute the size. It shouldn't matter. */
280 for (i
= 0; i
< argc
; ++i
)
281 length
+= 3 * strlen (argv
[i
]) + 1 + 2 * (argv
[i
][0] == '\0');
283 result
= (char *) xmalloc (length
);
286 for (i
= 0; i
< argc
; ++i
)
291 /* Need to handle empty arguments specially. */
292 if (argv
[i
][0] == '\0')
302 if (strpbrk (argv
[i
], special
))
308 for (cp
= argv
[i
]; *cp
; ++cp
)
312 /* A newline cannot be quoted with a backslash (it
313 just disappears), only by putting it inside
324 if (strchr (special
, *cp
) != NULL
)
340 /* In this case we can't handle arguments that contain spaces,
341 tabs, or newlines -- see breakup_args(). */
345 for (i
= 0; i
< argc
; ++i
)
347 char *cp
= strchr (argv
[i
], ' ');
349 cp
= strchr (argv
[i
], '\t');
351 cp
= strchr (argv
[i
], '\n');
353 error (_("can't handle command-line "
354 "argument containing whitespace"));
355 length
+= strlen (argv
[i
]) + 1;
358 result
= (char *) xmalloc (length
);
360 for (i
= 0; i
< argc
; ++i
)
363 strcat (result
, " ");
364 strcat (result
, argv
[i
]);
372 /* This function detects whether or not a '&' character (indicating
373 background execution) has been added as *the last* of the arguments ARGS
374 of a command. If it has, it removes it and returns 1. Otherwise it
375 does nothing and returns 0. */
377 strip_bg_char (char **args
)
381 p
= strchr (*args
, '&');
385 if (p
== (*args
+ strlen (*args
) - 1))
387 if (strlen (*args
) > 1)
391 while (*p
== ' ' || *p
== '\t');
402 /* Common actions to take after creating any sort of inferior, by any
403 means (running, attaching, connecting, et cetera). The target
404 should be stopped. */
407 post_create_inferior (struct target_ops
*target
, int from_tty
)
409 volatile struct gdb_exception ex
;
411 /* Be sure we own the terminal in case write operations are performed. */
412 target_terminal_ours ();
414 /* If the target hasn't taken care of this already, do it now.
415 Targets which need to access registers during to_open,
416 to_create_inferior, or to_attach should do it earlier; but many
418 target_find_description ();
420 /* Now that we know the register layout, retrieve current PC. But
421 if the PC is unavailable (e.g., we're opening a core file with
422 missing registers info), ignore it. */
424 TRY_CATCH (ex
, RETURN_MASK_ERROR
)
426 stop_pc
= regcache_read_pc (get_current_regcache ());
428 if (ex
.reason
< 0 && ex
.error
!= NOT_AVAILABLE_ERROR
)
429 throw_exception (ex
);
433 const unsigned solib_add_generation
434 = current_program_space
->solib_add_generation
;
436 /* Create the hooks to handle shared library load and unload
438 solib_create_inferior_hook (from_tty
);
440 if (current_program_space
->solib_add_generation
== solib_add_generation
)
442 /* The platform-specific hook should load initial shared libraries,
443 but didn't. FROM_TTY will be incorrectly 0 but such solib
444 targets should be fixed anyway. Call it only after the solib
445 target has been initialized by solib_create_inferior_hook. */
448 warning (_("platform-specific solib_create_inferior_hook did "
449 "not load initial shared libraries."));
451 /* If the solist is global across processes, there's no need to
453 if (!gdbarch_has_global_solist (target_gdbarch ()))
454 solib_add (NULL
, 0, target
, auto_solib_add
);
458 /* If the user sets watchpoints before execution having started,
459 then she gets software watchpoints, because GDB can't know which
460 target will end up being pushed, or if it supports hardware
461 watchpoints or not. breakpoint_re_set takes care of promoting
462 watchpoints to hardware watchpoints if possible, however, if this
463 new inferior doesn't load shared libraries or we don't pull in
464 symbols from any other source on this target/arch,
465 breakpoint_re_set is never called. Call it now so that software
466 watchpoints get a chance to be promoted to hardware watchpoints
467 if the now pushed target supports hardware watchpoints. */
468 breakpoint_re_set ();
470 observer_notify_inferior_created (target
, from_tty
);
473 /* Kill the inferior if already running. This function is designed
474 to be called when we are about to start the execution of the program
475 from the beginning. Ask the user to confirm that he wants to restart
476 the program being debugged when FROM_TTY is non-null. */
479 kill_if_already_running (int from_tty
)
481 if (! ptid_equal (inferior_ptid
, null_ptid
) && target_has_execution
)
483 /* Bail out before killing the program if we will not be able to
485 target_require_runnable ();
488 && !query (_("The program being debugged has been started already.\n\
489 Start it from the beginning? ")))
490 error (_("Program not restarted."));
495 /* Implement the "run" command. If TBREAK_AT_MAIN is set, then insert
496 a temporary breakpoint at the begining of the main program before
497 running the program. */
500 run_command_1 (char *args
, int from_tty
, int tbreak_at_main
)
503 struct cleanup
*old_chain
;
505 struct ui_out
*uiout
= current_uiout
;
506 struct target_ops
*run_target
;
510 kill_if_already_running (from_tty
);
512 init_wait_for_inferior ();
513 clear_breakpoint_hit_counts ();
515 /* Clean up any leftovers from other runs. Some other things from
516 this function should probably be moved into target_pre_inferior. */
517 target_pre_inferior (from_tty
);
519 /* The comment here used to read, "The exec file is re-read every
520 time we do a generic_mourn_inferior, so we just have to worry
521 about the symbol file." The `generic_mourn_inferior' function
522 gets called whenever the program exits. However, suppose the
523 program exits, and *then* the executable file changes? We need
524 to check again here. Since reopen_exec_file doesn't do anything
525 if the timestamp hasn't changed, I don't see the harm. */
529 /* Insert the temporary breakpoint if a location was specified. */
531 tbreak_command (main_name (), 0);
533 exec_file
= (char *) get_exec_file (0);
535 run_target
= find_run_target ();
537 if (non_stop
&& !run_target
->to_supports_non_stop (run_target
))
538 error (_("The target does not support running in non-stop mode."));
540 /* We keep symbols from add-symbol-file, on the grounds that the
541 user might want to add some symbols before running the program
542 (right?). But sometimes (dynamic loading where the user manually
543 introduces the new symbols with add-symbol-file), the code which
544 the symbols describe does not persist between runs. Currently
545 the user has to manually nuke all symbols between runs if they
546 want them to go away (PR 2207). This is probably reasonable. */
550 if (run_target
->to_can_async_p (run_target
))
551 async_disable_stdin ();
555 int async_exec
= strip_bg_char (&args
);
557 /* If we get a request for running in the bg but the target
558 doesn't support it, error out. */
559 if (async_exec
&& !run_target
->to_can_async_p (run_target
))
560 error (_("Asynchronous execution not supported on this target."));
562 /* If we don't get a request of running in the bg, then we need
563 to simulate synchronous (fg) execution. */
564 if (!async_exec
&& run_target
->to_can_async_p (run_target
))
566 /* Simulate synchronous execution. */
567 async_disable_stdin ();
570 /* If there were other args, beside '&', process them. */
572 set_inferior_args (args
);
577 ui_out_field_string (uiout
, NULL
, "Starting program");
578 ui_out_text (uiout
, ": ");
580 ui_out_field_string (uiout
, "execfile", exec_file
);
581 ui_out_spaces (uiout
, 1);
582 /* We call get_inferior_args() because we might need to compute
584 ui_out_field_string (uiout
, "infargs", get_inferior_args ());
585 ui_out_text (uiout
, "\n");
586 ui_out_flush (uiout
);
589 /* We call get_inferior_args() because we might need to compute
591 run_target
->to_create_inferior (run_target
, exec_file
, get_inferior_args (),
592 environ_vector (current_inferior ()->environment
),
594 /* to_create_inferior should push the target, so after this point we
595 shouldn't refer to run_target again. */
598 /* We're starting off a new process. When we get out of here, in
599 non-stop mode, finish the state of all threads of that process,
600 but leave other threads alone, as they may be stopped in internal
601 events --- the frontend shouldn't see them as stopped. In
602 all-stop, always finish the state of all threads, as we may be
603 resuming more than just the new process. */
605 ptid
= pid_to_ptid (ptid_get_pid (inferior_ptid
));
607 ptid
= minus_one_ptid
;
608 old_chain
= make_cleanup (finish_thread_state_cleanup
, &ptid
);
610 /* Pass zero for FROM_TTY, because at this point the "run" command
611 has done its thing; now we are setting up the running program. */
612 post_create_inferior (¤t_target
, 0);
614 /* Start the target running. Do not use -1 continuation as it would skip
615 breakpoint right at the entry point. */
616 proceed (regcache_read_pc (get_current_regcache ()), GDB_SIGNAL_0
, 0);
618 /* Since there was no error, there's no need to finish the thread
620 discard_cleanups (old_chain
);
624 run_command (char *args
, int from_tty
)
626 run_command_1 (args
, from_tty
, 0);
630 run_no_args_command (char *args
, int from_tty
)
632 set_inferior_args ("");
636 /* Start the execution of the program up until the beginning of the main
640 start_command (char *args
, int from_tty
)
642 /* Some languages such as Ada need to search inside the program
643 minimal symbols for the location where to put the temporary
644 breakpoint before starting. */
645 if (!have_minimal_symbols ())
646 error (_("No symbol table loaded. Use the \"file\" command."));
648 /* Run the program until reaching the main procedure... */
649 run_command_1 (args
, from_tty
, 1);
653 proceed_thread_callback (struct thread_info
*thread
, void *arg
)
655 /* We go through all threads individually instead of compressing
656 into a single target `resume_all' request, because some threads
657 may be stopped in internal breakpoints/events, or stopped waiting
658 for its turn in the displaced stepping queue (that is, they are
659 running && !executing). The target side has no idea about why
660 the thread is stopped, so a `resume_all' command would resume too
661 much. If/when GDB gains a way to tell the target `hold this
662 thread stopped until I say otherwise', then we can optimize
664 if (!is_stopped (thread
->ptid
))
667 switch_to_thread (thread
->ptid
);
668 clear_proceed_status ();
669 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
674 ensure_valid_thread (void)
676 if (ptid_equal (inferior_ptid
, null_ptid
)
677 || is_exited (inferior_ptid
))
678 error (_("Cannot execute this command without a live selected thread."));
681 /* If the user is looking at trace frames, any resumption of execution
682 is likely to mix up recorded and live target data. So simply
683 disallow those commands. */
686 ensure_not_tfind_mode (void)
688 if (get_traceframe_number () >= 0)
689 error (_("Cannot execute this command while looking at trace frames."));
692 /* Throw an error indicating the current thread is running. */
695 error_is_running (void)
697 error (_("Cannot execute this command while "
698 "the selected thread is running."));
701 /* Calls error_is_running if the current thread is running. */
704 ensure_not_running (void)
706 if (is_running (inferior_ptid
))
711 continue_1 (int all_threads
)
714 ensure_not_tfind_mode ();
716 if (non_stop
&& all_threads
)
718 /* Don't error out if the current thread is running, because
719 there may be other stopped threads. */
720 struct cleanup
*old_chain
;
722 /* Backup current thread and selected frame. */
723 old_chain
= make_cleanup_restore_current_thread ();
725 iterate_over_threads (proceed_thread_callback
, NULL
);
727 /* Restore selected ptid. */
728 do_cleanups (old_chain
);
732 ensure_valid_thread ();
733 ensure_not_running ();
734 clear_proceed_status ();
735 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
739 /* continue [-a] [proceed-count] [&] */
741 continue_command (char *args
, int from_tty
)
747 /* Find out whether we must run in the background. */
749 async_exec
= strip_bg_char (&args
);
751 /* If we must run in the background, but the target can't do it,
753 if (async_exec
&& !target_can_async_p ())
754 error (_("Asynchronous execution not supported on this target."));
756 /* If we are not asked to run in the bg, then prepare to run in the
757 foreground, synchronously. */
758 if (!async_exec
&& target_can_async_p ())
760 /* Simulate synchronous execution. */
761 async_disable_stdin ();
766 if (strncmp (args
, "-a", sizeof ("-a") - 1) == 0)
769 args
+= sizeof ("-a") - 1;
775 if (!non_stop
&& all_threads
)
776 error (_("`-a' is meaningless in all-stop mode."));
778 if (args
!= NULL
&& all_threads
)
779 error (_("Can't resume all threads and specify "
780 "proceed count simultaneously."));
782 /* If we have an argument left, set proceed count of breakpoint we
789 struct thread_info
*tp
;
792 tp
= find_thread_ptid (inferior_ptid
);
796 struct target_waitstatus ws
;
798 get_last_target_status (&last_ptid
, &ws
);
799 tp
= find_thread_ptid (last_ptid
);
802 bs
= tp
->control
.stop_bpstat
;
804 while ((stat
= bpstat_num (&bs
, &num
)) != 0)
807 set_ignore_count (num
,
808 parse_and_eval_long (args
) - 1,
810 /* set_ignore_count prints a message ending with a period.
811 So print two spaces before "Continuing.". */
813 printf_filtered (" ");
817 if (!stopped
&& from_tty
)
820 ("Not stopped at any breakpoint; argument ignored.\n");
825 printf_filtered (_("Continuing.\n"));
827 continue_1 (all_threads
);
830 /* Record the starting point of a "step" or "next" command. */
833 set_step_frame (void)
835 struct symtab_and_line sal
;
837 find_frame_sal (get_current_frame (), &sal
);
838 set_step_info (get_current_frame (), sal
);
841 /* Step until outside of current statement. */
844 step_command (char *count_string
, int from_tty
)
846 step_1 (0, 0, count_string
);
849 /* Likewise, but skip over subroutine calls as if single instructions. */
852 next_command (char *count_string
, int from_tty
)
854 step_1 (1, 0, count_string
);
857 /* Likewise, but step only one instruction. */
860 stepi_command (char *count_string
, int from_tty
)
862 step_1 (0, 1, count_string
);
866 nexti_command (char *count_string
, int from_tty
)
868 step_1 (1, 1, count_string
);
872 delete_longjmp_breakpoint_cleanup (void *arg
)
874 int thread
= * (int *) arg
;
875 delete_longjmp_breakpoint (thread
);
879 step_1 (int skip_subroutines
, int single_inst
, char *count_string
)
882 struct cleanup
*cleanups
= make_cleanup (null_cleanup
, NULL
);
887 ensure_not_tfind_mode ();
888 ensure_valid_thread ();
889 ensure_not_running ();
892 async_exec
= strip_bg_char (&count_string
);
894 /* If we get a request for running in the bg but the target
895 doesn't support it, error out. */
896 if (async_exec
&& !target_can_async_p ())
897 error (_("Asynchronous execution not supported on this target."));
899 /* If we don't get a request of running in the bg, then we need
900 to simulate synchronous (fg) execution. */
901 if (!async_exec
&& target_can_async_p ())
903 /* Simulate synchronous execution. */
904 async_disable_stdin ();
907 count
= count_string
? parse_and_eval_long (count_string
) : 1;
909 if (!single_inst
|| skip_subroutines
) /* Leave si command alone. */
911 struct thread_info
*tp
= inferior_thread ();
913 if (in_thread_list (inferior_ptid
))
914 thread
= pid_to_thread_id (inferior_ptid
);
916 set_longjmp_breakpoint (tp
, get_frame_id (get_current_frame ()));
918 make_cleanup (delete_longjmp_breakpoint_cleanup
, &thread
);
921 /* In synchronous case, all is well; each step_once call will step once. */
922 if (!target_can_async_p ())
924 for (; count
> 0; count
--)
926 step_once (skip_subroutines
, single_inst
, count
, thread
);
928 if (!target_has_execution
)
932 struct thread_info
*tp
= inferior_thread ();
934 if (!tp
->control
.stop_step
|| !tp
->step_multi
)
936 /* If we stopped for some reason that is not stepping
937 there are no further steps to make. */
944 do_cleanups (cleanups
);
948 /* In the case of an asynchronous target things get complicated;
949 do only one step for now, before returning control to the
950 event loop. Let the continuation figure out how many other
951 steps we need to do, and handle them one at the time, through
953 step_once (skip_subroutines
, single_inst
, count
, thread
);
955 /* We are running, and the continuation is installed. It will
956 disable the longjmp breakpoint as appropriate. */
957 discard_cleanups (cleanups
);
961 struct step_1_continuation_args
964 int skip_subroutines
;
969 /* Called after we are done with one step operation, to check whether
970 we need to step again, before we print the prompt and return control
971 to the user. If count is > 1, we will need to do one more call to
972 proceed(), via step_once(). Basically it is like step_once and
973 step_1_continuation are co-recursive. */
975 step_1_continuation (void *args
, int err
)
977 struct step_1_continuation_args
*a
= args
;
979 if (target_has_execution
)
981 struct thread_info
*tp
;
983 tp
= inferior_thread ();
985 && tp
->step_multi
&& tp
->control
.stop_step
)
987 /* There are more steps to make, and we did stop due to
988 ending a stepping range. Do another step. */
989 step_once (a
->skip_subroutines
, a
->single_inst
,
990 a
->count
- 1, a
->thread
);
996 /* We either hit an error, or stopped for some reason that is
997 not stepping, or there are no further steps to make.
999 if (!a
->single_inst
|| a
->skip_subroutines
)
1000 delete_longjmp_breakpoint (a
->thread
);
1003 /* Do just one step operation. This is useful to implement the 'step
1004 n' kind of commands. In case of asynchronous targets, we will have
1005 to set up a continuation to be done after the target stops (after
1006 this one step). For synch targets, the caller handles further
1010 step_once (int skip_subroutines
, int single_inst
, int count
, int thread
)
1012 struct frame_info
*frame
= get_current_frame ();
1016 /* Don't assume THREAD is a valid thread id. It is set to -1 if
1017 the longjmp breakpoint was not required. Use the
1018 INFERIOR_PTID thread instead, which is the same thread when
1020 struct thread_info
*tp
= inferior_thread ();
1022 clear_proceed_status ();
1029 /* Step at an inlined function behaves like "down". */
1030 if (!skip_subroutines
1031 && inline_skipped_frames (inferior_ptid
))
1035 /* Pretend that we've ran. */
1036 resume_ptid
= user_visible_resume_ptid (1);
1037 set_running (resume_ptid
, 1);
1039 step_into_inline_frame (inferior_ptid
);
1041 step_once (skip_subroutines
, single_inst
, count
- 1, thread
);
1044 /* Pretend that we've stopped. */
1047 if (target_can_async_p ())
1048 inferior_event_handler (INF_EXEC_COMPLETE
, NULL
);
1053 pc
= get_frame_pc (frame
);
1054 find_pc_line_pc_range (pc
,
1055 &tp
->control
.step_range_start
,
1056 &tp
->control
.step_range_end
);
1058 tp
->control
.may_range_step
= 1;
1060 /* If we have no line info, switch to stepi mode. */
1061 if (tp
->control
.step_range_end
== 0 && step_stop_if_no_debug
)
1063 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1064 tp
->control
.may_range_step
= 0;
1066 else if (tp
->control
.step_range_end
== 0)
1070 if (find_pc_partial_function (pc
, &name
,
1071 &tp
->control
.step_range_start
,
1072 &tp
->control
.step_range_end
) == 0)
1073 error (_("Cannot find bounds of current function"));
1075 target_terminal_ours ();
1076 printf_filtered (_("Single stepping until exit from function %s,"
1077 "\nwhich has no line number information.\n"),
1083 /* Say we are stepping, but stop after one insn whatever it does. */
1084 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1085 if (!skip_subroutines
)
1087 Don't step over function calls, not even to functions lacking
1089 tp
->control
.step_over_calls
= STEP_OVER_NONE
;
1092 if (skip_subroutines
)
1093 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1095 tp
->step_multi
= (count
> 1);
1096 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 1);
1098 /* For async targets, register a continuation to do any
1099 additional steps. For sync targets, the caller will handle
1100 further stepping. */
1101 if (target_can_async_p ())
1103 struct step_1_continuation_args
*args
;
1105 args
= xmalloc (sizeof (*args
));
1106 args
->skip_subroutines
= skip_subroutines
;
1107 args
->single_inst
= single_inst
;
1108 args
->count
= count
;
1109 args
->thread
= thread
;
1111 add_intermediate_continuation (tp
, step_1_continuation
, args
, xfree
);
1117 /* Continue program at specified address. */
1120 jump_command (char *arg
, int from_tty
)
1122 struct gdbarch
*gdbarch
= get_current_arch ();
1124 struct symtabs_and_lines sals
;
1125 struct symtab_and_line sal
;
1131 ensure_not_tfind_mode ();
1132 ensure_valid_thread ();
1133 ensure_not_running ();
1135 /* Find out whether we must run in the background. */
1137 async_exec
= strip_bg_char (&arg
);
1139 /* If we must run in the background, but the target can't do it,
1141 if (async_exec
&& !target_can_async_p ())
1142 error (_("Asynchronous execution not supported on this target."));
1145 error_no_arg (_("starting address"));
1147 sals
= decode_line_with_last_displayed (arg
, DECODE_LINE_FUNFIRSTLINE
);
1148 if (sals
.nelts
!= 1)
1150 error (_("Unreasonable jump request"));
1156 if (sal
.symtab
== 0 && sal
.pc
== 0)
1157 error (_("No source file has been specified."));
1159 resolve_sal_pc (&sal
); /* May error out. */
1161 /* See if we are trying to jump to another function. */
1162 fn
= get_frame_function (get_current_frame ());
1163 sfn
= find_pc_function (sal
.pc
);
1164 if (fn
!= NULL
&& sfn
!= fn
)
1166 if (!query (_("Line %d is not in `%s'. Jump anyway? "), sal
.line
,
1167 SYMBOL_PRINT_NAME (fn
)))
1169 error (_("Not confirmed."));
1176 fixup_symbol_section (sfn
, 0);
1177 if (section_is_overlay (SYMBOL_OBJ_SECTION (SYMBOL_OBJFILE (sfn
), sfn
)) &&
1178 !section_is_mapped (SYMBOL_OBJ_SECTION (SYMBOL_OBJFILE (sfn
), sfn
)))
1180 if (!query (_("WARNING!!! Destination is in "
1181 "unmapped overlay! Jump anyway? ")))
1183 error (_("Not confirmed."));
1193 printf_filtered (_("Continuing at "));
1194 fputs_filtered (paddress (gdbarch
, addr
), gdb_stdout
);
1195 printf_filtered (".\n");
1198 /* If we are not asked to run in the bg, then prepare to run in the
1199 foreground, synchronously. */
1200 if (!async_exec
&& target_can_async_p ())
1202 /* Simulate synchronous execution. */
1203 async_disable_stdin ();
1206 clear_proceed_status ();
1207 proceed (addr
, GDB_SIGNAL_0
, 0);
1211 /* Go to line or address in current procedure. */
1213 go_command (char *line_no
, int from_tty
)
1215 if (line_no
== (char *) NULL
|| !*line_no
)
1216 printf_filtered (_("Usage: go <location>\n"));
1219 tbreak_command (line_no
, from_tty
);
1220 jump_command (line_no
, from_tty
);
1225 /* Continue program giving it specified signal. */
1228 signal_command (char *signum_exp
, int from_tty
)
1230 enum gdb_signal oursig
;
1233 dont_repeat (); /* Too dangerous. */
1235 ensure_not_tfind_mode ();
1236 ensure_valid_thread ();
1237 ensure_not_running ();
1239 /* Find out whether we must run in the background. */
1240 if (signum_exp
!= NULL
)
1241 async_exec
= strip_bg_char (&signum_exp
);
1243 /* If we must run in the background, but the target can't do it,
1245 if (async_exec
&& !target_can_async_p ())
1246 error (_("Asynchronous execution not supported on this target."));
1248 /* If we are not asked to run in the bg, then prepare to run in the
1249 foreground, synchronously. */
1250 if (!async_exec
&& target_can_async_p ())
1252 /* Simulate synchronous execution. */
1253 async_disable_stdin ();
1257 error_no_arg (_("signal number"));
1259 /* It would be even slicker to make signal names be valid expressions,
1260 (the type could be "enum $signal" or some such), then the user could
1261 assign them to convenience variables. */
1262 oursig
= gdb_signal_from_name (signum_exp
);
1264 if (oursig
== GDB_SIGNAL_UNKNOWN
)
1266 /* No, try numeric. */
1267 int num
= parse_and_eval_long (signum_exp
);
1270 oursig
= GDB_SIGNAL_0
;
1272 oursig
= gdb_signal_from_command (num
);
1277 if (oursig
== GDB_SIGNAL_0
)
1278 printf_filtered (_("Continuing with no signal.\n"));
1280 printf_filtered (_("Continuing with signal %s.\n"),
1281 gdb_signal_to_name (oursig
));
1284 clear_proceed_status ();
1285 proceed ((CORE_ADDR
) -1, oursig
, 0);
1288 /* Continuation args to be passed to the "until" command
1290 struct until_next_continuation_args
1292 /* The thread that was current when the command was executed. */
1296 /* A continuation callback for until_next_command. */
1299 until_next_continuation (void *arg
, int err
)
1301 struct until_next_continuation_args
*a
= arg
;
1303 delete_longjmp_breakpoint (a
->thread
);
1306 /* Proceed until we reach a different source line with pc greater than
1307 our current one or exit the function. We skip calls in both cases.
1309 Note that eventually this command should probably be changed so
1310 that only source lines are printed out when we hit the breakpoint
1311 we set. This may involve changes to wait_for_inferior and the
1312 proceed status code. */
1315 until_next_command (int from_tty
)
1317 struct frame_info
*frame
;
1319 struct symbol
*func
;
1320 struct symtab_and_line sal
;
1321 struct thread_info
*tp
= inferior_thread ();
1322 int thread
= tp
->num
;
1323 struct cleanup
*old_chain
;
1325 clear_proceed_status ();
1328 frame
= get_current_frame ();
1330 /* Step until either exited from this function or greater
1331 than the current line (if in symbolic section) or pc (if
1334 pc
= get_frame_pc (frame
);
1335 func
= find_pc_function (pc
);
1339 struct bound_minimal_symbol msymbol
= lookup_minimal_symbol_by_pc (pc
);
1341 if (msymbol
.minsym
== NULL
)
1342 error (_("Execution is not within a known function."));
1344 tp
->control
.step_range_start
= BMSYMBOL_VALUE_ADDRESS (msymbol
);
1345 tp
->control
.step_range_end
= pc
;
1349 sal
= find_pc_line (pc
, 0);
1351 tp
->control
.step_range_start
= BLOCK_START (SYMBOL_BLOCK_VALUE (func
));
1352 tp
->control
.step_range_end
= sal
.end
;
1354 tp
->control
.may_range_step
= 1;
1356 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1358 tp
->step_multi
= 0; /* Only one call to proceed */
1360 set_longjmp_breakpoint (tp
, get_frame_id (frame
));
1361 old_chain
= make_cleanup (delete_longjmp_breakpoint_cleanup
, &thread
);
1363 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 1);
1365 if (target_can_async_p () && is_running (inferior_ptid
))
1367 struct until_next_continuation_args
*cont_args
;
1369 discard_cleanups (old_chain
);
1370 cont_args
= XNEW (struct until_next_continuation_args
);
1371 cont_args
->thread
= inferior_thread ()->num
;
1373 add_continuation (tp
, until_next_continuation
, cont_args
, xfree
);
1376 do_cleanups (old_chain
);
1380 until_command (char *arg
, int from_tty
)
1385 ensure_not_tfind_mode ();
1386 ensure_valid_thread ();
1387 ensure_not_running ();
1389 /* Find out whether we must run in the background. */
1391 async_exec
= strip_bg_char (&arg
);
1393 /* If we must run in the background, but the target can't do it,
1395 if (async_exec
&& !target_can_async_p ())
1396 error (_("Asynchronous execution not supported on this target."));
1398 /* If we are not asked to run in the bg, then prepare to run in the
1399 foreground, synchronously. */
1400 if (!async_exec
&& target_can_async_p ())
1402 /* Simulate synchronous execution. */
1403 async_disable_stdin ();
1407 until_break_command (arg
, from_tty
, 0);
1409 until_next_command (from_tty
);
1413 advance_command (char *arg
, int from_tty
)
1418 ensure_not_tfind_mode ();
1419 ensure_valid_thread ();
1420 ensure_not_running ();
1423 error_no_arg (_("a location"));
1425 /* Find out whether we must run in the background. */
1427 async_exec
= strip_bg_char (&arg
);
1429 /* If we must run in the background, but the target can't do it,
1431 if (async_exec
&& !target_can_async_p ())
1432 error (_("Asynchronous execution not supported on this target."));
1434 /* If we are not asked to run in the bg, then prepare to run in the
1435 foreground, synchronously. */
1436 if (!async_exec
&& target_can_async_p ())
1438 /* Simulate synchronous execution. */
1439 async_disable_stdin ();
1442 until_break_command (arg
, from_tty
, 1);
1445 /* Return the value of the result of a function at the end of a 'finish'
1449 get_return_value (struct value
*function
, struct type
*value_type
)
1451 struct regcache
*stop_regs
= stop_registers
;
1452 struct gdbarch
*gdbarch
;
1453 struct value
*value
;
1454 struct cleanup
*cleanup
= make_cleanup (null_cleanup
, NULL
);
1456 /* If stop_registers were not saved, use the current registers. */
1459 stop_regs
= regcache_dup (get_current_regcache ());
1460 make_cleanup_regcache_xfree (stop_regs
);
1463 gdbarch
= get_regcache_arch (stop_regs
);
1465 CHECK_TYPEDEF (value_type
);
1466 gdb_assert (TYPE_CODE (value_type
) != TYPE_CODE_VOID
);
1468 /* FIXME: 2003-09-27: When returning from a nested inferior function
1469 call, it's possible (with no help from the architecture vector)
1470 to locate and return/print a "struct return" value. This is just
1471 a more complicated case of what is already being done in the
1472 inferior function call code. In fact, when inferior function
1473 calls are made async, this will likely be made the norm. */
1475 switch (gdbarch_return_value (gdbarch
, function
, value_type
,
1478 case RETURN_VALUE_REGISTER_CONVENTION
:
1479 case RETURN_VALUE_ABI_RETURNS_ADDRESS
:
1480 case RETURN_VALUE_ABI_PRESERVES_ADDRESS
:
1481 value
= allocate_value (value_type
);
1482 gdbarch_return_value (gdbarch
, function
, value_type
, stop_regs
,
1483 value_contents_raw (value
), NULL
);
1485 case RETURN_VALUE_STRUCT_CONVENTION
:
1489 internal_error (__FILE__
, __LINE__
, _("bad switch"));
1492 do_cleanups (cleanup
);
1497 /* Print the result of a function at the end of a 'finish' command. */
1500 print_return_value (struct value
*function
, struct type
*value_type
)
1502 struct value
*value
= get_return_value (function
, value_type
);
1503 struct ui_out
*uiout
= current_uiout
;
1507 struct value_print_options opts
;
1508 struct ui_file
*stb
;
1509 struct cleanup
*old_chain
;
1512 stb
= mem_fileopen ();
1513 old_chain
= make_cleanup_ui_file_delete (stb
);
1514 ui_out_text (uiout
, "Value returned is ");
1515 ui_out_field_fmt (uiout
, "gdb-result-var", "$%d",
1516 record_latest_value (value
));
1517 ui_out_text (uiout
, " = ");
1518 get_no_prettyformat_print_options (&opts
);
1519 value_print (value
, stb
, &opts
);
1520 ui_out_field_stream (uiout
, "return-value", stb
);
1521 ui_out_text (uiout
, "\n");
1522 do_cleanups (old_chain
);
1526 ui_out_text (uiout
, "Value returned has type: ");
1527 ui_out_field_string (uiout
, "return-type", TYPE_NAME (value_type
));
1528 ui_out_text (uiout
, ".");
1529 ui_out_text (uiout
, " Cannot determine contents\n");
1533 /* Stuff that needs to be done by the finish command after the target
1534 has stopped. In asynchronous mode, we wait for the target to stop
1535 in the call to poll or select in the event loop, so it is
1536 impossible to do all the stuff as part of the finish_command
1537 function itself. The only chance we have to complete this command
1538 is in fetch_inferior_event, which is called by the event loop as
1539 soon as it detects that the target has stopped. */
1541 struct finish_command_continuation_args
1543 /* The thread that as current when the command was executed. */
1545 struct breakpoint
*breakpoint
;
1546 struct symbol
*function
;
1550 finish_command_continuation (void *arg
, int err
)
1552 struct finish_command_continuation_args
*a
= arg
;
1556 struct thread_info
*tp
= NULL
;
1559 if (!ptid_equal (inferior_ptid
, null_ptid
)
1560 && target_has_execution
1561 && is_stopped (inferior_ptid
))
1563 tp
= inferior_thread ();
1564 bs
= tp
->control
.stop_bpstat
;
1567 if (bpstat_find_breakpoint (bs
, a
->breakpoint
) != NULL
1568 && a
->function
!= NULL
)
1570 struct type
*value_type
;
1572 value_type
= TYPE_TARGET_TYPE (SYMBOL_TYPE (a
->function
));
1574 internal_error (__FILE__
, __LINE__
,
1575 _("finish_command: function has no target type"));
1577 if (TYPE_CODE (value_type
) != TYPE_CODE_VOID
)
1579 volatile struct gdb_exception ex
;
1582 func
= read_var_value (a
->function
, get_current_frame ());
1583 TRY_CATCH (ex
, RETURN_MASK_ALL
)
1585 /* print_return_value can throw an exception in some
1586 circumstances. We need to catch this so that we still
1587 delete the breakpoint. */
1588 print_return_value (func
, value_type
);
1591 exception_print (gdb_stdout
, ex
);
1595 /* We suppress normal call of normal_stop observer and do it
1596 here so that the *stopped notification includes the return
1598 if (bs
!= NULL
&& tp
->control
.proceed_to_finish
)
1599 observer_notify_normal_stop (bs
, 1 /* print frame */);
1602 delete_breakpoint (a
->breakpoint
);
1603 delete_longjmp_breakpoint (a
->thread
);
1607 finish_command_continuation_free_arg (void *arg
)
1612 /* finish_backward -- helper function for finish_command. */
1615 finish_backward (struct symbol
*function
)
1617 struct symtab_and_line sal
;
1618 struct thread_info
*tp
= inferior_thread ();
1620 CORE_ADDR func_addr
;
1622 pc
= get_frame_pc (get_current_frame ());
1624 if (find_pc_partial_function (pc
, NULL
, &func_addr
, NULL
) == 0)
1625 internal_error (__FILE__
, __LINE__
,
1626 _("Finish: couldn't find function."));
1628 sal
= find_pc_line (func_addr
, 0);
1630 tp
->control
.proceed_to_finish
= 1;
1631 /* Special case: if we're sitting at the function entry point,
1632 then all we need to do is take a reverse singlestep. We
1633 don't need to set a breakpoint, and indeed it would do us
1636 Note that this can only happen at frame #0, since there's
1637 no way that a function up the stack can have a return address
1638 that's equal to its entry point. */
1642 struct frame_info
*frame
= get_selected_frame (NULL
);
1643 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
1644 struct symtab_and_line sr_sal
;
1646 /* Set a step-resume at the function's entry point. Once that's
1647 hit, we'll do one more step backwards. */
1650 sr_sal
.pspace
= get_frame_program_space (frame
);
1651 insert_step_resume_breakpoint_at_sal (gdbarch
,
1652 sr_sal
, null_frame_id
);
1654 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
1658 /* We're almost there -- we just need to back up by one more
1660 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1661 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 1);
1665 /* finish_forward -- helper function for finish_command. */
1668 finish_forward (struct symbol
*function
, struct frame_info
*frame
)
1670 struct frame_id frame_id
= get_frame_id (frame
);
1671 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
1672 struct symtab_and_line sal
;
1673 struct thread_info
*tp
= inferior_thread ();
1674 struct breakpoint
*breakpoint
;
1675 struct cleanup
*old_chain
;
1676 struct finish_command_continuation_args
*cargs
;
1677 int thread
= tp
->num
;
1679 sal
= find_pc_line (get_frame_pc (frame
), 0);
1680 sal
.pc
= get_frame_pc (frame
);
1682 breakpoint
= set_momentary_breakpoint (gdbarch
, sal
,
1683 get_stack_frame_id (frame
),
1686 /* set_momentary_breakpoint invalidates FRAME. */
1689 old_chain
= make_cleanup_delete_breakpoint (breakpoint
);
1691 set_longjmp_breakpoint (tp
, frame_id
);
1692 make_cleanup (delete_longjmp_breakpoint_cleanup
, &thread
);
1694 /* We want stop_registers, please... */
1695 tp
->control
.proceed_to_finish
= 1;
1696 cargs
= xmalloc (sizeof (*cargs
));
1698 cargs
->thread
= thread
;
1699 cargs
->breakpoint
= breakpoint
;
1700 cargs
->function
= function
;
1701 add_continuation (tp
, finish_command_continuation
, cargs
,
1702 finish_command_continuation_free_arg
);
1703 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
1705 discard_cleanups (old_chain
);
1706 if (!target_can_async_p ())
1707 do_all_continuations (0);
1710 /* "finish": Set a temporary breakpoint at the place the selected
1711 frame will return to, then continue. */
1714 finish_command (char *arg
, int from_tty
)
1716 struct frame_info
*frame
;
1717 struct symbol
*function
;
1722 ensure_not_tfind_mode ();
1723 ensure_valid_thread ();
1724 ensure_not_running ();
1726 /* Find out whether we must run in the background. */
1728 async_exec
= strip_bg_char (&arg
);
1730 /* If we must run in the background, but the target can't do it,
1732 if (async_exec
&& !target_can_async_p ())
1733 error (_("Asynchronous execution not supported on this target."));
1735 /* If we are not asked to run in the bg, then prepare to run in the
1736 foreground, synchronously. */
1737 if (!async_exec
&& target_can_async_p ())
1739 /* Simulate synchronous execution. */
1740 async_disable_stdin ();
1744 error (_("The \"finish\" command does not take any arguments."));
1746 frame
= get_prev_frame (get_selected_frame (_("No selected frame.")));
1748 error (_("\"finish\" not meaningful in the outermost frame."));
1750 clear_proceed_status ();
1752 /* Finishing from an inline frame is completely different. We don't
1753 try to show the "return value" - no way to locate it. So we do
1754 not need a completion. */
1755 if (get_frame_type (get_selected_frame (_("No selected frame.")))
1758 /* Claim we are stepping in the calling frame. An empty step
1759 range means that we will stop once we aren't in a function
1760 called by that frame. We don't use the magic "1" value for
1761 step_range_end, because then infrun will think this is nexti,
1762 and not step over the rest of this inlined function call. */
1763 struct thread_info
*tp
= inferior_thread ();
1764 struct symtab_and_line empty_sal
;
1766 init_sal (&empty_sal
);
1767 set_step_info (frame
, empty_sal
);
1768 tp
->control
.step_range_start
= get_frame_pc (frame
);
1769 tp
->control
.step_range_end
= tp
->control
.step_range_start
;
1770 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1772 /* Print info on the selected frame, including level number but not
1776 printf_filtered (_("Run till exit from "));
1777 print_stack_frame (get_selected_frame (NULL
), 1, LOCATION
, 0);
1780 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 1);
1784 /* Ignore TAILCALL_FRAME type frames, they were executed already before
1785 entering THISFRAME. */
1786 while (get_frame_type (frame
) == TAILCALL_FRAME
)
1787 frame
= get_prev_frame (frame
);
1789 /* Find the function we will return from. */
1791 function
= find_pc_function (get_frame_pc (get_selected_frame (NULL
)));
1793 /* Print info on the selected frame, including level number but not
1797 if (execution_direction
== EXEC_REVERSE
)
1798 printf_filtered (_("Run back to call of "));
1800 printf_filtered (_("Run till exit from "));
1802 print_stack_frame (get_selected_frame (NULL
), 1, LOCATION
, 0);
1805 if (execution_direction
== EXEC_REVERSE
)
1806 finish_backward (function
);
1808 finish_forward (function
, frame
);
1813 program_info (char *args
, int from_tty
)
1817 struct thread_info
*tp
;
1820 if (!target_has_execution
)
1822 printf_filtered (_("The program being debugged is not being run.\n"));
1827 ptid
= inferior_ptid
;
1830 struct target_waitstatus ws
;
1832 get_last_target_status (&ptid
, &ws
);
1835 if (ptid_equal (ptid
, null_ptid
) || is_exited (ptid
))
1836 error (_("Invalid selected thread."));
1837 else if (is_running (ptid
))
1838 error (_("Selected thread is running."));
1840 tp
= find_thread_ptid (ptid
);
1841 bs
= tp
->control
.stop_bpstat
;
1842 stat
= bpstat_num (&bs
, &num
);
1844 target_files_info ();
1845 printf_filtered (_("Program stopped at %s.\n"),
1846 paddress (target_gdbarch (), stop_pc
));
1847 if (tp
->control
.stop_step
)
1848 printf_filtered (_("It stopped after being stepped.\n"));
1851 /* There may be several breakpoints in the same place, so this
1852 isn't as strange as it seems. */
1857 printf_filtered (_("It stopped at a breakpoint "
1858 "that has since been deleted.\n"));
1861 printf_filtered (_("It stopped at breakpoint %d.\n"), num
);
1862 stat
= bpstat_num (&bs
, &num
);
1865 else if (tp
->suspend
.stop_signal
!= GDB_SIGNAL_0
)
1867 printf_filtered (_("It stopped with signal %s, %s.\n"),
1868 gdb_signal_to_name (tp
->suspend
.stop_signal
),
1869 gdb_signal_to_string (tp
->suspend
.stop_signal
));
1874 printf_filtered (_("Type \"info stack\" or \"info "
1875 "registers\" for more information.\n"));
1880 environment_info (char *var
, int from_tty
)
1884 char *val
= get_in_environ (current_inferior ()->environment
, var
);
1888 puts_filtered (var
);
1889 puts_filtered (" = ");
1890 puts_filtered (val
);
1891 puts_filtered ("\n");
1895 puts_filtered ("Environment variable \"");
1896 puts_filtered (var
);
1897 puts_filtered ("\" not defined.\n");
1902 char **vector
= environ_vector (current_inferior ()->environment
);
1906 puts_filtered (*vector
++);
1907 puts_filtered ("\n");
1913 set_environment_command (char *arg
, int from_tty
)
1915 char *p
, *val
, *var
;
1919 error_no_arg (_("environment variable and value"));
1921 /* Find seperation between variable name and value. */
1922 p
= (char *) strchr (arg
, '=');
1923 val
= (char *) strchr (arg
, ' ');
1925 if (p
!= 0 && val
!= 0)
1927 /* We have both a space and an equals. If the space is before the
1928 equals, walk forward over the spaces til we see a nonspace
1929 (possibly the equals). */
1934 /* Now if the = is after the char following the spaces,
1935 take the char following the spaces. */
1939 else if (val
!= 0 && p
== 0)
1943 error_no_arg (_("environment variable to set"));
1945 if (p
== 0 || p
[1] == 0)
1949 p
= arg
+ strlen (arg
); /* So that savestring below will work. */
1953 /* Not setting variable value to null. */
1955 while (*val
== ' ' || *val
== '\t')
1959 while (p
!= arg
&& (p
[-1] == ' ' || p
[-1] == '\t'))
1962 var
= savestring (arg
, p
- arg
);
1965 printf_filtered (_("Setting environment variable "
1966 "\"%s\" to null value.\n"),
1968 set_in_environ (current_inferior ()->environment
, var
, "");
1971 set_in_environ (current_inferior ()->environment
, var
, val
);
1976 unset_environment_command (char *var
, int from_tty
)
1980 /* If there is no argument, delete all environment variables.
1981 Ask for confirmation if reading from the terminal. */
1982 if (!from_tty
|| query (_("Delete all environment variables? ")))
1984 free_environ (current_inferior ()->environment
);
1985 current_inferior ()->environment
= make_environ ();
1989 unset_in_environ (current_inferior ()->environment
, var
);
1992 /* Handle the execution path (PATH variable). */
1994 static const char path_var_name
[] = "PATH";
1997 path_info (char *args
, int from_tty
)
1999 puts_filtered ("Executable and object file path: ");
2000 puts_filtered (get_in_environ (current_inferior ()->environment
,
2002 puts_filtered ("\n");
2005 /* Add zero or more directories to the front of the execution path. */
2008 path_command (char *dirname
, int from_tty
)
2014 env
= get_in_environ (current_inferior ()->environment
, path_var_name
);
2015 /* Can be null if path is not set. */
2018 exec_path
= xstrdup (env
);
2019 mod_path (dirname
, &exec_path
);
2020 set_in_environ (current_inferior ()->environment
, path_var_name
, exec_path
);
2023 path_info ((char *) NULL
, from_tty
);
2027 /* Print out the register NAME with value VAL, to FILE, in the default
2031 default_print_one_register_info (struct ui_file
*file
,
2035 struct type
*regtype
= value_type (val
);
2036 int print_raw_format
;
2038 fputs_filtered (name
, file
);
2039 print_spaces_filtered (15 - strlen (name
), file
);
2041 print_raw_format
= (value_entirely_available (val
)
2042 && !value_optimized_out (val
));
2044 /* If virtual format is floating, print it that way, and in raw
2046 if (TYPE_CODE (regtype
) == TYPE_CODE_FLT
2047 || TYPE_CODE (regtype
) == TYPE_CODE_DECFLOAT
)
2050 struct value_print_options opts
;
2051 const gdb_byte
*valaddr
= value_contents_for_printing (val
);
2052 enum bfd_endian byte_order
= gdbarch_byte_order (get_type_arch (regtype
));
2054 get_user_print_options (&opts
);
2058 value_contents_for_printing (val
),
2059 value_embedded_offset (val
), 0,
2060 file
, 0, val
, &opts
, current_language
);
2062 if (print_raw_format
)
2064 fprintf_filtered (file
, "\t(raw ");
2065 print_hex_chars (file
, valaddr
, TYPE_LENGTH (regtype
), byte_order
);
2066 fprintf_filtered (file
, ")");
2071 struct value_print_options opts
;
2073 /* Print the register in hex. */
2074 get_formatted_print_options (&opts
, 'x');
2077 value_contents_for_printing (val
),
2078 value_embedded_offset (val
), 0,
2079 file
, 0, val
, &opts
, current_language
);
2080 /* If not a vector register, print it also according to its
2082 if (print_raw_format
&& TYPE_VECTOR (regtype
) == 0)
2084 get_user_print_options (&opts
);
2086 fprintf_filtered (file
, "\t");
2088 value_contents_for_printing (val
),
2089 value_embedded_offset (val
), 0,
2090 file
, 0, val
, &opts
, current_language
);
2094 fprintf_filtered (file
, "\n");
2097 /* Print out the machine register regnum. If regnum is -1, print all
2098 registers (print_all == 1) or all non-float and non-vector
2099 registers (print_all == 0).
2101 For most machines, having all_registers_info() print the
2102 register(s) one per line is good enough. If a different format is
2103 required, (eg, for MIPS or Pyramid 90x, which both have lots of
2104 regs), or there is an existing convention for showing all the
2105 registers, define the architecture method PRINT_REGISTERS_INFO to
2106 provide that format. */
2109 default_print_registers_info (struct gdbarch
*gdbarch
,
2110 struct ui_file
*file
,
2111 struct frame_info
*frame
,
2112 int regnum
, int print_all
)
2115 const int numregs
= gdbarch_num_regs (gdbarch
)
2116 + gdbarch_num_pseudo_regs (gdbarch
);
2118 for (i
= 0; i
< numregs
; i
++)
2120 /* Decide between printing all regs, non-float / vector regs, or
2126 if (!gdbarch_register_reggroup_p (gdbarch
, i
, all_reggroup
))
2131 if (!gdbarch_register_reggroup_p (gdbarch
, i
, general_reggroup
))
2141 /* If the register name is empty, it is undefined for this
2142 processor, so don't display anything. */
2143 if (gdbarch_register_name (gdbarch
, i
) == NULL
2144 || *(gdbarch_register_name (gdbarch
, i
)) == '\0')
2147 default_print_one_register_info (file
,
2148 gdbarch_register_name (gdbarch
, i
),
2149 value_of_register (i
, frame
));
2154 registers_info (char *addr_exp
, int fpregs
)
2156 struct frame_info
*frame
;
2157 struct gdbarch
*gdbarch
;
2159 if (!target_has_registers
)
2160 error (_("The program has no registers now."));
2161 frame
= get_selected_frame (NULL
);
2162 gdbarch
= get_frame_arch (frame
);
2166 gdbarch_print_registers_info (gdbarch
, gdb_stdout
,
2171 while (*addr_exp
!= '\0')
2176 /* Skip leading white space. */
2177 addr_exp
= skip_spaces (addr_exp
);
2179 /* Discard any leading ``$''. Check that there is something
2180 resembling a register following it. */
2181 if (addr_exp
[0] == '$')
2183 if (isspace ((*addr_exp
)) || (*addr_exp
) == '\0')
2184 error (_("Missing register name"));
2186 /* Find the start/end of this register name/num/group. */
2188 while ((*addr_exp
) != '\0' && !isspace ((*addr_exp
)))
2192 /* Figure out what we've found and display it. */
2194 /* A register name? */
2196 int regnum
= user_reg_map_name_to_regnum (gdbarch
, start
, end
- start
);
2200 /* User registers lie completely outside of the range of
2201 normal registers. Catch them early so that the target
2203 if (regnum
>= gdbarch_num_regs (gdbarch
)
2204 + gdbarch_num_pseudo_regs (gdbarch
))
2206 struct value
*regval
= value_of_user_reg (regnum
, frame
);
2207 const char *regname
= user_reg_map_regnum_to_name (gdbarch
,
2210 /* Print in the same fashion
2211 gdbarch_print_registers_info's default
2212 implementation prints. */
2213 default_print_one_register_info (gdb_stdout
,
2218 gdbarch_print_registers_info (gdbarch
, gdb_stdout
,
2219 frame
, regnum
, fpregs
);
2224 /* A register group? */
2226 struct reggroup
*group
;
2228 for (group
= reggroup_next (gdbarch
, NULL
);
2230 group
= reggroup_next (gdbarch
, group
))
2232 /* Don't bother with a length check. Should the user
2233 enter a short register group name, go with the first
2234 group that matches. */
2235 if (strncmp (start
, reggroup_name (group
), end
- start
) == 0)
2243 regnum
< gdbarch_num_regs (gdbarch
)
2244 + gdbarch_num_pseudo_regs (gdbarch
);
2247 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, group
))
2248 gdbarch_print_registers_info (gdbarch
,
2256 /* Nothing matched. */
2257 error (_("Invalid register `%.*s'"), (int) (end
- start
), start
);
2262 all_registers_info (char *addr_exp
, int from_tty
)
2264 registers_info (addr_exp
, 1);
2268 nofp_registers_info (char *addr_exp
, int from_tty
)
2270 registers_info (addr_exp
, 0);
2274 print_vector_info (struct ui_file
*file
,
2275 struct frame_info
*frame
, const char *args
)
2277 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
2279 if (gdbarch_print_vector_info_p (gdbarch
))
2280 gdbarch_print_vector_info (gdbarch
, file
, frame
, args
);
2284 int printed_something
= 0;
2287 regnum
< gdbarch_num_regs (gdbarch
)
2288 + gdbarch_num_pseudo_regs (gdbarch
);
2291 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, vector_reggroup
))
2293 printed_something
= 1;
2294 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
2297 if (!printed_something
)
2298 fprintf_filtered (file
, "No vector information\n");
2303 vector_info (char *args
, int from_tty
)
2305 if (!target_has_registers
)
2306 error (_("The program has no registers now."));
2308 print_vector_info (gdb_stdout
, get_selected_frame (NULL
), args
);
2311 /* Kill the inferior process. Make us have no inferior. */
2314 kill_command (char *arg
, int from_tty
)
2316 /* FIXME: This should not really be inferior_ptid (or target_has_execution).
2317 It should be a distinct flag that indicates that a target is active, cuz
2318 some targets don't have processes! */
2320 if (ptid_equal (inferior_ptid
, null_ptid
))
2321 error (_("The program is not being run."));
2322 if (!query (_("Kill the program being debugged? ")))
2323 error (_("Not confirmed."));
2326 /* If we still have other inferiors to debug, then don't mess with
2327 with their threads. */
2328 if (!have_inferiors ())
2330 init_thread_list (); /* Destroy thread info. */
2332 /* Killing off the inferior can leave us with a core file. If
2333 so, print the state we are left in. */
2334 if (target_has_stack
)
2336 printf_filtered (_("In %s,\n"), target_longname
);
2337 print_stack_frame (get_selected_frame (NULL
), 1, SRC_AND_LOC
, 1);
2340 bfd_cache_close_all ();
2343 /* Used in `attach&' command. ARG is a point to an integer
2344 representing a process id. Proceed threads of this process iff
2345 they stopped due to debugger request, and when they did, they
2346 reported a clean stop (GDB_SIGNAL_0). Do not proceed threads
2347 that have been explicitly been told to stop. */
2350 proceed_after_attach_callback (struct thread_info
*thread
,
2353 int pid
= * (int *) arg
;
2355 if (ptid_get_pid (thread
->ptid
) == pid
2356 && !is_exited (thread
->ptid
)
2357 && !is_executing (thread
->ptid
)
2358 && !thread
->stop_requested
2359 && thread
->suspend
.stop_signal
== GDB_SIGNAL_0
)
2361 switch_to_thread (thread
->ptid
);
2362 clear_proceed_status ();
2363 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
2370 proceed_after_attach (int pid
)
2372 /* Don't error out if the current thread is running, because
2373 there may be other stopped threads. */
2374 struct cleanup
*old_chain
;
2376 /* Backup current thread and selected frame. */
2377 old_chain
= make_cleanup_restore_current_thread ();
2379 iterate_over_threads (proceed_after_attach_callback
, &pid
);
2381 /* Restore selected ptid. */
2382 do_cleanups (old_chain
);
2387 * Should save/restore the tty state since it might be that the
2388 * program to be debugged was started on this tty and it wants
2389 * the tty in some state other than what we want. If it's running
2390 * on another terminal or without a terminal, then saving and
2391 * restoring the tty state is a harmless no-op.
2392 * This only needs to be done if we are attaching to a process.
2395 /* attach_command --
2396 takes a program started up outside of gdb and ``attaches'' to it.
2397 This stops it cold in its tracks and allows us to start debugging it.
2398 and wait for the trace-trap that results from attaching. */
2401 attach_command_post_wait (char *args
, int from_tty
, int async_exec
)
2404 char *full_exec_path
= NULL
;
2405 struct inferior
*inferior
;
2407 inferior
= current_inferior ();
2408 inferior
->control
.stop_soon
= NO_STOP_QUIETLY
;
2410 /* If no exec file is yet known, try to determine it from the
2412 exec_file
= (char *) get_exec_file (0);
2415 exec_file
= target_pid_to_exec_file (ptid_get_pid (inferior_ptid
));
2418 /* It's possible we don't have a full path, but rather just a
2419 filename. Some targets, such as HP-UX, don't provide the
2422 Attempt to qualify the filename against the source path.
2423 (If that fails, we'll just fall back on the original
2424 filename. Not much more we can do...) */
2426 if (!source_full_path_of (exec_file
, &full_exec_path
))
2427 full_exec_path
= xstrdup (exec_file
);
2429 exec_file_attach (full_exec_path
, from_tty
);
2430 symbol_file_add_main (full_exec_path
, from_tty
);
2435 reopen_exec_file ();
2439 /* Take any necessary post-attaching actions for this platform. */
2440 target_post_attach (ptid_get_pid (inferior_ptid
));
2442 post_create_inferior (¤t_target
, from_tty
);
2444 /* Install inferior's terminal modes. */
2445 target_terminal_inferior ();
2449 /* The user requested an `attach&', so be sure to leave threads
2450 that didn't get a signal running. */
2452 /* Immediatelly resume all suspended threads of this inferior,
2453 and this inferior only. This should have no effect on
2454 already running threads. If a thread has been stopped with a
2455 signal, leave it be. */
2457 proceed_after_attach (inferior
->pid
);
2460 if (inferior_thread ()->suspend
.stop_signal
== GDB_SIGNAL_0
)
2462 clear_proceed_status ();
2463 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
2469 /* The user requested a plain `attach', so be sure to leave
2470 the inferior stopped. */
2472 if (target_can_async_p ())
2473 async_enable_stdin ();
2475 /* At least the current thread is already stopped. */
2477 /* In all-stop, by definition, all threads have to be already
2478 stopped at this point. In non-stop, however, although the
2479 selected thread is stopped, others may still be executing.
2480 Be sure to explicitly stop all threads of the process. This
2481 should have no effect on already stopped threads. */
2483 target_stop (pid_to_ptid (inferior
->pid
));
2485 /* Tell the user/frontend where we're stopped. */
2487 if (deprecated_attach_hook
)
2488 deprecated_attach_hook ();
2492 struct attach_command_continuation_args
2500 attach_command_continuation (void *args
, int err
)
2502 struct attach_command_continuation_args
*a
= args
;
2507 attach_command_post_wait (a
->args
, a
->from_tty
, a
->async_exec
);
2511 attach_command_continuation_free_args (void *args
)
2513 struct attach_command_continuation_args
*a
= args
;
2520 attach_command (char *args
, int from_tty
)
2523 struct cleanup
*back_to
= make_cleanup (null_cleanup
, NULL
);
2524 struct target_ops
*attach_target
;
2526 dont_repeat (); /* Not for the faint of heart */
2528 if (gdbarch_has_global_solist (target_gdbarch ()))
2529 /* Don't complain if all processes share the same symbol
2532 else if (target_has_execution
)
2534 if (query (_("A program is being debugged already. Kill it? ")))
2537 error (_("Not killed."));
2540 /* Clean up any leftovers from other runs. Some other things from
2541 this function should probably be moved into target_pre_inferior. */
2542 target_pre_inferior (from_tty
);
2544 attach_target
= find_attach_target ();
2546 if (non_stop
&& !attach_target
->to_supports_non_stop (attach_target
))
2547 error (_("Cannot attach to this target in non-stop mode"));
2551 async_exec
= strip_bg_char (&args
);
2553 /* If we get a request for running in the bg but the target
2554 doesn't support it, error out. */
2555 if (async_exec
&& !attach_target
->to_can_async_p (attach_target
))
2556 error (_("Asynchronous execution not supported on this target."));
2559 /* If we don't get a request of running in the bg, then we need
2560 to simulate synchronous (fg) execution. */
2561 if (!async_exec
&& attach_target
->to_can_async_p (attach_target
))
2563 /* Simulate synchronous execution. */
2564 async_disable_stdin ();
2565 make_cleanup ((make_cleanup_ftype
*)async_enable_stdin
, NULL
);
2568 attach_target
->to_attach (attach_target
, args
, from_tty
);
2569 /* to_attach should push the target, so after this point we
2570 shouldn't refer to attach_target again. */
2571 attach_target
= NULL
;
2573 /* Set up the "saved terminal modes" of the inferior
2574 based on what modes we are starting it with. */
2575 target_terminal_init ();
2577 /* Set up execution context to know that we should return from
2578 wait_for_inferior as soon as the target reports a stop. */
2579 init_wait_for_inferior ();
2580 clear_proceed_status ();
2584 /* If we find that the current thread isn't stopped, explicitly
2585 do so now, because we're going to install breakpoints and
2589 /* The user requested an `attach&'; stop just one thread. */
2590 target_stop (inferior_ptid
);
2592 /* The user requested an `attach', so stop all threads of this
2594 target_stop (pid_to_ptid (ptid_get_pid (inferior_ptid
)));
2597 /* Some system don't generate traps when attaching to inferior.
2598 E.g. Mach 3 or GNU hurd. */
2599 if (!target_attach_no_wait
)
2601 struct inferior
*inferior
= current_inferior ();
2603 /* Careful here. See comments in inferior.h. Basically some
2604 OSes don't ignore SIGSTOPs on continue requests anymore. We
2605 need a way for handle_inferior_event to reset the stop_signal
2606 variable after an attach, and this is what
2607 STOP_QUIETLY_NO_SIGSTOP is for. */
2608 inferior
->control
.stop_soon
= STOP_QUIETLY_NO_SIGSTOP
;
2610 if (target_can_async_p ())
2612 /* sync_execution mode. Wait for stop. */
2613 struct attach_command_continuation_args
*a
;
2615 a
= xmalloc (sizeof (*a
));
2616 a
->args
= xstrdup (args
);
2617 a
->from_tty
= from_tty
;
2618 a
->async_exec
= async_exec
;
2619 add_inferior_continuation (attach_command_continuation
, a
,
2620 attach_command_continuation_free_args
);
2621 discard_cleanups (back_to
);
2625 wait_for_inferior ();
2628 attach_command_post_wait (args
, from_tty
, async_exec
);
2629 discard_cleanups (back_to
);
2632 /* We had just found out that the target was already attached to an
2633 inferior. PTID points at a thread of this new inferior, that is
2634 the most likely to be stopped right now, but not necessarily so.
2635 The new inferior is assumed to be already added to the inferior
2636 list at this point. If LEAVE_RUNNING, then leave the threads of
2637 this inferior running, except those we've explicitly seen reported
2641 notice_new_inferior (ptid_t ptid
, int leave_running
, int from_tty
)
2643 struct cleanup
* old_chain
;
2646 old_chain
= make_cleanup (null_cleanup
, NULL
);
2648 /* If in non-stop, leave threads as running as they were. If
2649 they're stopped for some reason other than us telling it to, the
2650 target reports a signal != GDB_SIGNAL_0. We don't try to
2651 resume threads with such a stop signal. */
2652 async_exec
= non_stop
;
2654 if (!ptid_equal (inferior_ptid
, null_ptid
))
2655 make_cleanup_restore_current_thread ();
2657 switch_to_thread (ptid
);
2659 /* When we "notice" a new inferior we need to do all the things we
2660 would normally do if we had just attached to it. */
2662 if (is_executing (inferior_ptid
))
2664 struct inferior
*inferior
= current_inferior ();
2666 /* We're going to install breakpoints, and poke at memory,
2667 ensure that the inferior is stopped for a moment while we do
2669 target_stop (inferior_ptid
);
2671 inferior
->control
.stop_soon
= STOP_QUIETLY_REMOTE
;
2673 /* Wait for stop before proceeding. */
2674 if (target_can_async_p ())
2676 struct attach_command_continuation_args
*a
;
2678 a
= xmalloc (sizeof (*a
));
2679 a
->args
= xstrdup ("");
2680 a
->from_tty
= from_tty
;
2681 a
->async_exec
= async_exec
;
2682 add_inferior_continuation (attach_command_continuation
, a
,
2683 attach_command_continuation_free_args
);
2685 do_cleanups (old_chain
);
2689 wait_for_inferior ();
2692 async_exec
= leave_running
;
2693 attach_command_post_wait ("" /* args */, from_tty
, async_exec
);
2695 do_cleanups (old_chain
);
2700 * takes a program previously attached to and detaches it.
2701 * The program resumes execution and will no longer stop
2702 * on signals, etc. We better not have left any breakpoints
2703 * in the program or it'll die when it hits one. For this
2704 * to work, it may be necessary for the process to have been
2705 * previously attached. It *might* work if the program was
2706 * started via the normal ptrace (PTRACE_TRACEME).
2710 detach_command (char *args
, int from_tty
)
2712 dont_repeat (); /* Not for the faint of heart. */
2714 if (ptid_equal (inferior_ptid
, null_ptid
))
2715 error (_("The program is not being run."));
2717 query_if_trace_running (from_tty
);
2719 disconnect_tracing ();
2721 target_detach (args
, from_tty
);
2723 /* If the solist is global across inferiors, don't clear it when we
2724 detach from a single inferior. */
2725 if (!gdbarch_has_global_solist (target_gdbarch ()))
2726 no_shared_libraries (NULL
, from_tty
);
2728 /* If we still have inferiors to debug, then don't mess with their
2730 if (!have_inferiors ())
2731 init_thread_list ();
2733 if (deprecated_detach_hook
)
2734 deprecated_detach_hook ();
2737 /* Disconnect from the current target without resuming it (leaving it
2738 waiting for a debugger).
2740 We'd better not have left any breakpoints in the program or the
2741 next debugger will get confused. Currently only supported for some
2742 remote targets, since the normal attach mechanisms don't work on
2743 stopped processes on some native platforms (e.g. GNU/Linux). */
2746 disconnect_command (char *args
, int from_tty
)
2748 dont_repeat (); /* Not for the faint of heart. */
2749 query_if_trace_running (from_tty
);
2750 disconnect_tracing ();
2751 target_disconnect (args
, from_tty
);
2752 no_shared_libraries (NULL
, from_tty
);
2753 init_thread_list ();
2754 if (deprecated_detach_hook
)
2755 deprecated_detach_hook ();
2759 interrupt_target_1 (int all_threads
)
2764 ptid
= minus_one_ptid
;
2766 ptid
= inferior_ptid
;
2769 /* Tag the thread as having been explicitly requested to stop, so
2770 other parts of gdb know not to resume this thread automatically,
2771 if it was stopped due to an internal event. Limit this to
2772 non-stop mode, as when debugging a multi-threaded application in
2773 all-stop mode, we will only get one stop event --- it's undefined
2774 which thread will report the event. */
2776 set_stop_requested (ptid
, 1);
2779 /* Stop the execution of the target while running in async mode, in
2780 the backgound. In all-stop, stop the whole process. In non-stop
2781 mode, stop the current thread only by default, or stop all threads
2782 if the `-a' switch is used. */
2784 /* interrupt [-a] */
2786 interrupt_target_command (char *args
, int from_tty
)
2788 if (target_can_async_p ())
2790 int all_threads
= 0;
2792 dont_repeat (); /* Not for the faint of heart. */
2795 && strncmp (args
, "-a", sizeof ("-a") - 1) == 0)
2798 if (!non_stop
&& all_threads
)
2799 error (_("-a is meaningless in all-stop mode."));
2801 interrupt_target_1 (all_threads
);
2806 print_float_info (struct ui_file
*file
,
2807 struct frame_info
*frame
, const char *args
)
2809 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
2811 if (gdbarch_print_float_info_p (gdbarch
))
2812 gdbarch_print_float_info (gdbarch
, file
, frame
, args
);
2816 int printed_something
= 0;
2819 regnum
< gdbarch_num_regs (gdbarch
)
2820 + gdbarch_num_pseudo_regs (gdbarch
);
2823 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, float_reggroup
))
2825 printed_something
= 1;
2826 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
2829 if (!printed_something
)
2830 fprintf_filtered (file
, "No floating-point info "
2831 "available for this processor.\n");
2836 float_info (char *args
, int from_tty
)
2838 if (!target_has_registers
)
2839 error (_("The program has no registers now."));
2841 print_float_info (gdb_stdout
, get_selected_frame (NULL
), args
);
2845 unset_command (char *args
, int from_tty
)
2847 printf_filtered (_("\"unset\" must be followed by the "
2848 "name of an unset subcommand.\n"));
2849 help_list (unsetlist
, "unset ", -1, gdb_stdout
);
2852 /* Implement `info proc' family of commands. */
2855 info_proc_cmd_1 (char *args
, enum info_proc_what what
, int from_tty
)
2857 struct gdbarch
*gdbarch
= get_current_arch ();
2859 if (!target_info_proc (args
, what
))
2861 if (gdbarch_info_proc_p (gdbarch
))
2862 gdbarch_info_proc (gdbarch
, args
, what
);
2864 error (_("Not supported on this target."));
2868 /* Implement `info proc' when given without any futher parameters. */
2871 info_proc_cmd (char *args
, int from_tty
)
2873 info_proc_cmd_1 (args
, IP_MINIMAL
, from_tty
);
2876 /* Implement `info proc mappings'. */
2879 info_proc_cmd_mappings (char *args
, int from_tty
)
2881 info_proc_cmd_1 (args
, IP_MAPPINGS
, from_tty
);
2884 /* Implement `info proc stat'. */
2887 info_proc_cmd_stat (char *args
, int from_tty
)
2889 info_proc_cmd_1 (args
, IP_STAT
, from_tty
);
2892 /* Implement `info proc status'. */
2895 info_proc_cmd_status (char *args
, int from_tty
)
2897 info_proc_cmd_1 (args
, IP_STATUS
, from_tty
);
2900 /* Implement `info proc cwd'. */
2903 info_proc_cmd_cwd (char *args
, int from_tty
)
2905 info_proc_cmd_1 (args
, IP_CWD
, from_tty
);
2908 /* Implement `info proc cmdline'. */
2911 info_proc_cmd_cmdline (char *args
, int from_tty
)
2913 info_proc_cmd_1 (args
, IP_CMDLINE
, from_tty
);
2916 /* Implement `info proc exe'. */
2919 info_proc_cmd_exe (char *args
, int from_tty
)
2921 info_proc_cmd_1 (args
, IP_EXE
, from_tty
);
2924 /* Implement `info proc all'. */
2927 info_proc_cmd_all (char *args
, int from_tty
)
2929 info_proc_cmd_1 (args
, IP_ALL
, from_tty
);
2933 _initialize_infcmd (void)
2935 static struct cmd_list_element
*info_proc_cmdlist
;
2936 struct cmd_list_element
*c
= NULL
;
2937 const char *cmd_name
;
2939 /* Add the filename of the terminal connected to inferior I/O. */
2940 add_setshow_filename_cmd ("inferior-tty", class_run
,
2941 &inferior_io_terminal_scratch
, _("\
2942 Set terminal for future runs of program being debugged."), _("\
2943 Show terminal for future runs of program being debugged."), _("\
2944 Usage: set inferior-tty /dev/pts/1"),
2945 set_inferior_tty_command
,
2946 show_inferior_tty_command
,
2947 &setlist
, &showlist
);
2948 add_com_alias ("tty", "set inferior-tty", class_alias
, 0);
2951 add_setshow_string_noescape_cmd (cmd_name
, class_run
,
2952 &inferior_args_scratch
, _("\
2953 Set argument list to give program being debugged when it is started."), _("\
2954 Show argument list to give program being debugged when it is started."), _("\
2955 Follow this command with any number of args, to be passed to the program."),
2958 &setlist
, &showlist
);
2959 c
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
2960 gdb_assert (c
!= NULL
);
2961 set_cmd_completer (c
, filename_completer
);
2963 c
= add_cmd ("environment", no_class
, environment_info
, _("\
2964 The environment to give the program, or one variable's value.\n\
2965 With an argument VAR, prints the value of environment variable VAR to\n\
2966 give the program being debugged. With no arguments, prints the entire\n\
2967 environment to be given to the program."), &showlist
);
2968 set_cmd_completer (c
, noop_completer
);
2970 add_prefix_cmd ("unset", no_class
, unset_command
,
2971 _("Complement to certain \"set\" commands."),
2972 &unsetlist
, "unset ", 0, &cmdlist
);
2974 c
= add_cmd ("environment", class_run
, unset_environment_command
, _("\
2975 Cancel environment variable VAR for the program.\n\
2976 This does not affect the program until the next \"run\" command."),
2978 set_cmd_completer (c
, noop_completer
);
2980 c
= add_cmd ("environment", class_run
, set_environment_command
, _("\
2981 Set environment variable value to give the program.\n\
2982 Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\
2983 VALUES of environment variables are uninterpreted strings.\n\
2984 This does not affect the program until the next \"run\" command."),
2986 set_cmd_completer (c
, noop_completer
);
2988 c
= add_com ("path", class_files
, path_command
, _("\
2989 Add directory DIR(s) to beginning of search path for object files.\n\
2990 $cwd in the path means the current working directory.\n\
2991 This path is equivalent to the $PATH shell variable. It is a list of\n\
2992 directories, separated by colons. These directories are searched to find\n\
2993 fully linked executable files and separately compiled object files as \
2995 set_cmd_completer (c
, filename_completer
);
2997 c
= add_cmd ("paths", no_class
, path_info
, _("\
2998 Current search path for finding 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 \
3005 set_cmd_completer (c
, noop_completer
);
3007 add_prefix_cmd ("kill", class_run
, kill_command
,
3008 _("Kill execution of program being debugged."),
3009 &killlist
, "kill ", 0, &cmdlist
);
3011 add_com ("attach", class_run
, attach_command
, _("\
3012 Attach to a process or file outside of GDB.\n\
3013 This command attaches to another target, of the same type as your last\n\
3014 \"target\" command (\"info files\" will show your target stack).\n\
3015 The command may take as argument a process id or a device file.\n\
3016 For a process id, you must have permission to send the process a signal,\n\
3017 and it must have the same effective uid as the debugger.\n\
3018 When using \"attach\" with a process id, the debugger finds the\n\
3019 program running in the process, looking first in the current working\n\
3020 directory, or (if not found there) using the source file search path\n\
3021 (see the \"directory\" command). You can also use the \"file\" command\n\
3022 to specify the program, and to load its symbol table."));
3024 add_prefix_cmd ("detach", class_run
, detach_command
, _("\
3025 Detach a process or file previously attached.\n\
3026 If a process, it is no longer traced, and it continues its execution. If\n\
3027 you were debugging a file, the file is closed and gdb no longer accesses it."),
3028 &detachlist
, "detach ", 0, &cmdlist
);
3030 add_com ("disconnect", class_run
, disconnect_command
, _("\
3031 Disconnect from a target.\n\
3032 The target will wait for another debugger to connect. Not available for\n\
3035 c
= add_com ("signal", class_run
, signal_command
, _("\
3036 Continue program with the specified signal.\n\
3037 Usage: signal SIGNAL\n\
3038 The SIGNAL argument is processed the same as the handle command.\n\
3040 An argument of \"0\" means continue the program without sending it a signal.\n\
3041 This is useful in cases where the program stopped because of a signal,\n\
3042 and you want to resume the program while discarding the signal."));
3043 set_cmd_completer (c
, signal_completer
);
3045 add_com ("stepi", class_run
, stepi_command
, _("\
3046 Step one instruction exactly.\n\
3048 Argument N means step N times (or till program stops for another \
3050 add_com_alias ("si", "stepi", class_alias
, 0);
3052 add_com ("nexti", class_run
, nexti_command
, _("\
3053 Step one instruction, but proceed through subroutine calls.\n\
3055 Argument N means step N times (or till program stops for another \
3057 add_com_alias ("ni", "nexti", class_alias
, 0);
3059 add_com ("finish", class_run
, finish_command
, _("\
3060 Execute until selected stack frame returns.\n\
3062 Upon return, the value returned is printed and put in the value history."));
3063 add_com_alias ("fin", "finish", class_run
, 1);
3065 add_com ("next", class_run
, next_command
, _("\
3066 Step program, proceeding through subroutine calls.\n\
3068 Unlike \"step\", if the current source line calls a subroutine,\n\
3069 this command does not enter the subroutine, but instead steps over\n\
3070 the call, in effect treating it as a single source line."));
3071 add_com_alias ("n", "next", class_run
, 1);
3073 add_com_alias ("S", "next", class_run
, 1);
3075 add_com ("step", class_run
, step_command
, _("\
3076 Step program until it reaches a different source line.\n\
3078 Argument N means step N times (or till program stops for another \
3080 add_com_alias ("s", "step", class_run
, 1);
3082 c
= add_com ("until", class_run
, until_command
, _("\
3083 Execute until the program reaches a source line greater than the current\n\
3084 or a specified location (same args as break command) within the current \
3086 set_cmd_completer (c
, location_completer
);
3087 add_com_alias ("u", "until", class_run
, 1);
3089 c
= add_com ("advance", class_run
, advance_command
, _("\
3090 Continue the program up to the given location (same form as args for break \
3092 Execution will also stop upon exit from the current stack frame."));
3093 set_cmd_completer (c
, location_completer
);
3095 c
= add_com ("jump", class_run
, jump_command
, _("\
3096 Continue program being debugged at specified line or address.\n\
3097 Usage: jump <location>\n\
3098 Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\
3099 for an address to start at."));
3100 set_cmd_completer (c
, location_completer
);
3101 add_com_alias ("j", "jump", class_run
, 1);
3105 c
= add_com ("go", class_run
, go_command
, _("\
3106 Usage: go <location>\n\
3107 Continue program being debugged, stopping at specified line or \n\
3109 Give as argument either LINENUM or *ADDR, where ADDR is an \n\
3110 expression for an address to start at.\n\
3111 This command is a combination of tbreak and jump."));
3112 set_cmd_completer (c
, location_completer
);
3116 add_com_alias ("g", "go", class_run
, 1);
3118 add_com ("continue", class_run
, continue_command
, _("\
3119 Continue program being debugged, after signal or breakpoint.\n\
3120 Usage: continue [N]\n\
3121 If proceeding from breakpoint, a number N may be used as an argument,\n\
3122 which means to set the ignore count of that breakpoint to N - 1 (so that\n\
3123 the breakpoint won't break until the Nth time it is reached).\n\
3125 If non-stop mode is enabled, continue only the current thread,\n\
3126 otherwise all the threads in the program are continued. To \n\
3127 continue all stopped threads in non-stop mode, use the -a option.\n\
3128 Specifying -a and an ignore count simultaneously is an error."));
3129 add_com_alias ("c", "cont", class_run
, 1);
3130 add_com_alias ("fg", "cont", class_run
, 1);
3132 c
= add_com ("run", class_run
, run_command
, _("\
3133 Start debugged program. You may specify arguments to give it.\n\
3134 Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\
3135 Input and output redirection with \">\", \"<\", or \">>\" are also \
3137 With no arguments, uses arguments last specified (with \"run\" \
3138 or \"set args\").\n\
3139 To cancel previous arguments and run with no arguments,\n\
3140 use \"set args\" without arguments."));
3141 set_cmd_completer (c
, filename_completer
);
3142 add_com_alias ("r", "run", class_run
, 1);
3144 add_com ("R", class_run
, run_no_args_command
,
3145 _("Start debugged program with no arguments."));
3147 c
= add_com ("start", class_run
, start_command
, _("\
3148 Run the debugged program until the beginning of the main procedure.\n\
3149 You may specify arguments to give to your program, just as with the\n\
3150 \"run\" command."));
3151 set_cmd_completer (c
, filename_completer
);
3153 add_com ("interrupt", class_run
, interrupt_target_command
,
3154 _("Interrupt the execution of the debugged program.\n\
3155 If non-stop mode is enabled, interrupt only the current thread,\n\
3156 otherwise all the threads in the program are stopped. To \n\
3157 interrupt all running threads in non-stop mode, use the -a option."));
3159 add_info ("registers", nofp_registers_info
, _("\
3160 List of integer registers and their contents, for selected stack frame.\n\
3161 Register name as argument means describe only that register."));
3162 add_info_alias ("r", "registers", 1);
3165 add_com ("lr", class_info
, nofp_registers_info
, _("\
3166 List of integer registers and their contents, for selected stack frame.\n\
3167 Register name as argument means describe only that register."));
3168 add_info ("all-registers", all_registers_info
, _("\
3169 List of all registers and their contents, for selected stack frame.\n\
3170 Register name as argument means describe only that register."));
3172 add_info ("program", program_info
,
3173 _("Execution status of the program."));
3175 add_info ("float", float_info
,
3176 _("Print the status of the floating point unit\n"));
3178 add_info ("vector", vector_info
,
3179 _("Print the status of the vector unit\n"));
3181 add_prefix_cmd ("proc", class_info
, info_proc_cmd
,
3183 Show /proc process information about any running process.\n\
3184 Specify any process id, or use the program being debugged by default."),
3185 &info_proc_cmdlist
, "info proc ",
3186 1/*allow-unknown*/, &infolist
);
3188 add_cmd ("mappings", class_info
, info_proc_cmd_mappings
, _("\
3189 List of mapped memory regions."),
3190 &info_proc_cmdlist
);
3192 add_cmd ("stat", class_info
, info_proc_cmd_stat
, _("\
3193 List process info from /proc/PID/stat."),
3194 &info_proc_cmdlist
);
3196 add_cmd ("status", class_info
, info_proc_cmd_status
, _("\
3197 List process info from /proc/PID/status."),
3198 &info_proc_cmdlist
);
3200 add_cmd ("cwd", class_info
, info_proc_cmd_cwd
, _("\
3201 List current working directory of the process."),
3202 &info_proc_cmdlist
);
3204 add_cmd ("cmdline", class_info
, info_proc_cmd_cmdline
, _("\
3205 List command line arguments of the process."),
3206 &info_proc_cmdlist
);
3208 add_cmd ("exe", class_info
, info_proc_cmd_exe
, _("\
3209 List absolute filename for executable of the process."),
3210 &info_proc_cmdlist
);
3212 add_cmd ("all", class_info
, info_proc_cmd_all
, _("\
3213 List all available /proc info."),
3214 &info_proc_cmdlist
);