1 /* Memory-access and commands for "inferior" process, for GDB.
3 Copyright (C) 1986-2017 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
21 #include "arch-utils.h"
36 #include "completer.h"
38 #include "event-top.h"
39 #include "parser-defs.h"
41 #include "reggroups.h"
46 #include "target-descriptions.h"
47 #include "user-regs.h"
48 #include "cli/cli-decode.h"
49 #include "gdbthread.h"
51 #include "inline-frame.h"
52 #include "tracepoint.h"
54 #include "continuations.h"
56 #include "cli/cli-utils.h"
58 #include "thread-fsm.h"
61 #include "common/gdb_optional.h"
63 /* Local functions: */
65 static void info_registers_command (char *, int);
67 static void until_next_command (int);
69 static void until_command (char *, int);
71 static void path_command (char *, int);
73 static void unset_command (char *, int);
75 static void info_float_command (char *, int);
77 static void disconnect_command (char *, int);
79 static void info_program_command (char *, int);
81 static void finish_command (char *, int);
83 static void signal_command (char *, int);
85 static void jump_command (char *, int);
87 static void step_1 (int, int, char *);
89 static void next_command (char *, int);
91 static void step_command (char *, int);
93 static void run_command (char *, int);
95 #define ERROR_NO_INFERIOR \
96 if (!target_has_execution) error (_("The program is not being run."));
98 /* Scratch area where string containing arguments to give to the
99 program will be stored by 'set args'. As soon as anything is
100 stored, notice_args_set will move it into per-inferior storage.
101 Arguments are separated by spaces. Empty string (pointer to '\0')
104 static char *inferior_args_scratch
;
106 /* Scratch area where the new cwd will be stored by 'set cwd'. */
108 static char *inferior_cwd_scratch
;
110 /* Scratch area where 'set inferior-tty' will store user-provided value.
111 We'll immediate copy it into per-inferior storage. */
113 static char *inferior_io_terminal_scratch
;
115 /* Pid of our debugged inferior, or 0 if no inferior now.
116 Since various parts of infrun.c test this to see whether there is a program
117 being debugged it should be nonzero (currently 3 is used) for remote
120 ptid_t inferior_ptid
;
122 /* Address at which inferior stopped. */
126 /* Nonzero if stopped due to completion of a stack dummy routine. */
128 enum stop_stack_kind stop_stack_dummy
;
130 /* Nonzero if stopped due to a random (unexpected) signal in inferior
133 int stopped_by_random_signal
;
135 /* See inferior.h. */
137 int startup_with_shell
= 1;
140 /* Accessor routines. */
142 /* Set the io terminal for the current inferior. Ownership of
143 TERMINAL_NAME is not transferred. */
146 set_inferior_io_terminal (const char *terminal_name
)
148 xfree (current_inferior ()->terminal
);
150 if (terminal_name
!= NULL
&& *terminal_name
!= '\0')
151 current_inferior ()->terminal
= xstrdup (terminal_name
);
153 current_inferior ()->terminal
= NULL
;
157 get_inferior_io_terminal (void)
159 return current_inferior ()->terminal
;
163 set_inferior_tty_command (char *args
, int from_tty
,
164 struct cmd_list_element
*c
)
166 /* CLI has assigned the user-provided value to inferior_io_terminal_scratch.
167 Now route it to current inferior. */
168 set_inferior_io_terminal (inferior_io_terminal_scratch
);
172 show_inferior_tty_command (struct ui_file
*file
, int from_tty
,
173 struct cmd_list_element
*c
, const char *value
)
175 /* Note that we ignore the passed-in value in favor of computing it
177 const char *inferior_io_terminal
= get_inferior_io_terminal ();
179 if (inferior_io_terminal
== NULL
)
180 inferior_io_terminal
= "";
181 fprintf_filtered (gdb_stdout
,
182 _("Terminal for future runs of program being debugged "
183 "is \"%s\".\n"), inferior_io_terminal
);
187 get_inferior_args (void)
189 if (current_inferior ()->argc
!= 0)
193 n
= construct_inferior_arguments (current_inferior ()->argc
,
194 current_inferior ()->argv
);
195 set_inferior_args (n
);
199 if (current_inferior ()->args
== NULL
)
200 current_inferior ()->args
= xstrdup ("");
202 return current_inferior ()->args
;
205 /* Set the arguments for the current inferior. Ownership of
206 NEWARGS is not transferred. */
209 set_inferior_args (char *newargs
)
211 xfree (current_inferior ()->args
);
212 current_inferior ()->args
= newargs
? xstrdup (newargs
) : NULL
;
213 current_inferior ()->argc
= 0;
214 current_inferior ()->argv
= 0;
218 set_inferior_args_vector (int argc
, char **argv
)
220 current_inferior ()->argc
= argc
;
221 current_inferior ()->argv
= argv
;
224 /* Notice when `set args' is run. */
227 set_args_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
229 /* CLI has assigned the user-provided value to inferior_args_scratch.
230 Now route it to current inferior. */
231 set_inferior_args (inferior_args_scratch
);
234 /* Notice when `show args' is run. */
237 show_args_command (struct ui_file
*file
, int from_tty
,
238 struct cmd_list_element
*c
, const char *value
)
240 /* Note that we ignore the passed-in value in favor of computing it
242 deprecated_show_value_hack (file
, from_tty
, c
, get_inferior_args ());
245 /* See common/common-inferior.h. */
248 set_inferior_cwd (const char *cwd
)
250 struct inferior
*inf
= current_inferior ();
252 gdb_assert (inf
!= NULL
);
257 inf
->cwd
.reset (xstrdup (cwd
));
260 /* See common/common-inferior.h. */
265 return current_inferior ()->cwd
.get ();
268 /* Handle the 'set cwd' command. */
271 set_cwd_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
273 if (*inferior_cwd_scratch
== '\0')
274 set_inferior_cwd (NULL
);
276 set_inferior_cwd (inferior_cwd_scratch
);
279 /* Handle the 'show cwd' command. */
282 show_cwd_command (struct ui_file
*file
, int from_tty
,
283 struct cmd_list_element
*c
, const char *value
)
285 const char *cwd
= get_inferior_cwd ();
288 fprintf_filtered (gdb_stdout
,
290 You have not set the inferior's current working directory.\n\
291 The inferior will inherit GDB's cwd if native debugging, or the remote\n\
292 server's cwd if remote debugging.\n"));
294 fprintf_filtered (gdb_stdout
,
295 _("Current working directory that will be used "
296 "when starting the inferior is \"%s\".\n"), cwd
);
300 /* Compute command-line string given argument vector. This does the
301 same shell processing as fork_inferior. */
304 construct_inferior_arguments (int argc
, char **argv
)
308 if (startup_with_shell
)
311 /* This holds all the characters considered special to the
313 static const char special
[] = "\"!&*|[]{}<>?`~^=;, \t\n";
314 static const char quote
= '"';
316 /* This holds all the characters considered special to the
317 typical Unix shells. We include `^' because the SunOS
318 /bin/sh treats it as a synonym for `|'. */
319 static const char special
[] = "\"!#$&*()\\|[]{}<>?'`~^; \t\n";
320 static const char quote
= '\'';
326 /* We over-compute the size. It shouldn't matter. */
327 for (i
= 0; i
< argc
; ++i
)
328 length
+= 3 * strlen (argv
[i
]) + 1 + 2 * (argv
[i
][0] == '\0');
330 result
= (char *) xmalloc (length
);
333 for (i
= 0; i
< argc
; ++i
)
338 /* Need to handle empty arguments specially. */
339 if (argv
[i
][0] == '\0')
349 if (strpbrk (argv
[i
], special
))
355 for (cp
= argv
[i
]; *cp
; ++cp
)
359 /* A newline cannot be quoted with a backslash (it
360 just disappears), only by putting it inside
371 if (strchr (special
, *cp
) != NULL
)
387 /* In this case we can't handle arguments that contain spaces,
388 tabs, or newlines -- see breakup_args(). */
392 for (i
= 0; i
< argc
; ++i
)
394 char *cp
= strchr (argv
[i
], ' ');
396 cp
= strchr (argv
[i
], '\t');
398 cp
= strchr (argv
[i
], '\n');
400 error (_("can't handle command-line "
401 "argument containing whitespace"));
402 length
+= strlen (argv
[i
]) + 1;
405 result
= (char *) xmalloc (length
);
407 for (i
= 0; i
< argc
; ++i
)
410 strcat (result
, " ");
411 strcat (result
, argv
[i
]);
419 /* This function strips the '&' character (indicating background
420 execution) that is added as *the last* of the arguments ARGS of a
421 command. A copy of the incoming ARGS without the '&' is returned,
422 unless the resulting string after stripping is empty, in which case
423 NULL is returned. *BG_CHAR_P is an output boolean that indicates
424 whether the '&' character was found. */
427 strip_bg_char (const char *args
, int *bg_char_p
)
431 if (args
== NULL
|| *args
== '\0')
437 p
= args
+ strlen (args
);
441 while (p
> args
&& isspace (p
[-1]))
446 return savestring (args
, p
- args
);
452 return xstrdup (args
);
455 /* Common actions to take after creating any sort of inferior, by any
456 means (running, attaching, connecting, et cetera). The target
457 should be stopped. */
460 post_create_inferior (struct target_ops
*target
, int from_tty
)
463 /* Be sure we own the terminal in case write operations are performed. */
464 target_terminal::ours_for_output ();
466 /* If the target hasn't taken care of this already, do it now.
467 Targets which need to access registers during to_open,
468 to_create_inferior, or to_attach should do it earlier; but many
470 target_find_description ();
472 /* Now that we know the register layout, retrieve current PC. But
473 if the PC is unavailable (e.g., we're opening a core file with
474 missing registers info), ignore it. */
478 stop_pc
= regcache_read_pc (get_current_regcache ());
480 CATCH (ex
, RETURN_MASK_ERROR
)
482 if (ex
.error
!= NOT_AVAILABLE_ERROR
)
483 throw_exception (ex
);
489 const unsigned solib_add_generation
490 = current_program_space
->solib_add_generation
;
492 /* Create the hooks to handle shared library load and unload
494 solib_create_inferior_hook (from_tty
);
496 if (current_program_space
->solib_add_generation
== solib_add_generation
)
498 /* The platform-specific hook should load initial shared libraries,
499 but didn't. FROM_TTY will be incorrectly 0 but such solib
500 targets should be fixed anyway. Call it only after the solib
501 target has been initialized by solib_create_inferior_hook. */
504 warning (_("platform-specific solib_create_inferior_hook did "
505 "not load initial shared libraries."));
507 /* If the solist is global across processes, there's no need to
509 if (!gdbarch_has_global_solist (target_gdbarch ()))
510 solib_add (NULL
, 0, auto_solib_add
);
514 /* If the user sets watchpoints before execution having started,
515 then she gets software watchpoints, because GDB can't know which
516 target will end up being pushed, or if it supports hardware
517 watchpoints or not. breakpoint_re_set takes care of promoting
518 watchpoints to hardware watchpoints if possible, however, if this
519 new inferior doesn't load shared libraries or we don't pull in
520 symbols from any other source on this target/arch,
521 breakpoint_re_set is never called. Call it now so that software
522 watchpoints get a chance to be promoted to hardware watchpoints
523 if the now pushed target supports hardware watchpoints. */
524 breakpoint_re_set ();
526 observer_notify_inferior_created (target
, from_tty
);
529 /* Kill the inferior if already running. This function is designed
530 to be called when we are about to start the execution of the program
531 from the beginning. Ask the user to confirm that he wants to restart
532 the program being debugged when FROM_TTY is non-null. */
535 kill_if_already_running (int from_tty
)
537 if (! ptid_equal (inferior_ptid
, null_ptid
) && target_has_execution
)
539 /* Bail out before killing the program if we will not be able to
541 target_require_runnable ();
544 && !query (_("The program being debugged has been started already.\n\
545 Start it from the beginning? ")))
546 error (_("Program not restarted."));
551 /* See inferior.h. */
554 prepare_execution_command (struct target_ops
*target
, int background
)
556 /* If we get a request for running in the bg but the target
557 doesn't support it, error out. */
558 if (background
&& !target
->to_can_async_p (target
))
559 error (_("Asynchronous execution not supported on this target."));
563 /* If we get a request for running in the fg, then we need to
564 simulate synchronous (fg) execution. Note no cleanup is
565 necessary for this. stdin is re-enabled whenever an error
566 reaches the top level. */
567 all_uis_on_sync_execution_starting ();
571 /* Determine how the new inferior will behave. */
575 /* Run program without any explicit stop during startup. */
578 /* Stop at the beginning of the program's main function. */
581 /* Stop at the first instruction of the program. */
582 RUN_STOP_AT_FIRST_INSN
585 /* Implement the "run" command. Force a stop during program start if
586 requested by RUN_HOW. */
589 run_command_1 (char *args
, int from_tty
, enum run_how run_how
)
591 const char *exec_file
;
592 struct cleanup
*old_chain
;
594 struct ui_out
*uiout
= current_uiout
;
595 struct target_ops
*run_target
;
597 struct cleanup
*args_chain
;
602 kill_if_already_running (from_tty
);
604 init_wait_for_inferior ();
605 clear_breakpoint_hit_counts ();
607 /* Clean up any leftovers from other runs. Some other things from
608 this function should probably be moved into target_pre_inferior. */
609 target_pre_inferior (from_tty
);
611 /* The comment here used to read, "The exec file is re-read every
612 time we do a generic_mourn_inferior, so we just have to worry
613 about the symbol file." The `generic_mourn_inferior' function
614 gets called whenever the program exits. However, suppose the
615 program exits, and *then* the executable file changes? We need
616 to check again here. Since reopen_exec_file doesn't do anything
617 if the timestamp hasn't changed, I don't see the harm. */
621 args
= strip_bg_char (args
, &async_exec
);
622 args_chain
= make_cleanup (xfree
, args
);
624 /* Do validation and preparation before possibly changing anything
627 run_target
= find_run_target ();
629 prepare_execution_command (run_target
, async_exec
);
631 if (non_stop
&& !run_target
->to_supports_non_stop (run_target
))
632 error (_("The target does not support running in non-stop mode."));
634 /* Done. Can now set breakpoints, change inferior args, etc. */
636 /* Insert temporary breakpoint in main function if requested. */
637 if (run_how
== RUN_STOP_AT_MAIN
)
638 tbreak_command (main_name (), 0);
640 exec_file
= get_exec_file (0);
642 /* We keep symbols from add-symbol-file, on the grounds that the
643 user might want to add some symbols before running the program
644 (right?). But sometimes (dynamic loading where the user manually
645 introduces the new symbols with add-symbol-file), the code which
646 the symbols describe does not persist between runs. Currently
647 the user has to manually nuke all symbols between runs if they
648 want them to go away (PR 2207). This is probably reasonable. */
650 /* If there were other args, beside '&', process them. */
652 set_inferior_args (args
);
656 uiout
->field_string (NULL
, "Starting program");
659 uiout
->field_string ("execfile", exec_file
);
661 /* We call get_inferior_args() because we might need to compute
663 uiout
->field_string ("infargs", get_inferior_args ());
668 /* Done with ARGS. */
669 do_cleanups (args_chain
);
671 /* We call get_inferior_args() because we might need to compute
673 run_target
->to_create_inferior (run_target
, exec_file
,
674 std::string (get_inferior_args ()),
675 current_inferior ()->environment
.envp (),
677 /* to_create_inferior should push the target, so after this point we
678 shouldn't refer to run_target again. */
681 /* We're starting off a new process. When we get out of here, in
682 non-stop mode, finish the state of all threads of that process,
683 but leave other threads alone, as they may be stopped in internal
684 events --- the frontend shouldn't see them as stopped. In
685 all-stop, always finish the state of all threads, as we may be
686 resuming more than just the new process. */
688 ptid
= pid_to_ptid (ptid_get_pid (inferior_ptid
));
690 ptid
= minus_one_ptid
;
691 old_chain
= make_cleanup (finish_thread_state_cleanup
, &ptid
);
693 /* Pass zero for FROM_TTY, because at this point the "run" command
694 has done its thing; now we are setting up the running program. */
695 post_create_inferior (¤t_target
, 0);
697 /* Queue a pending event so that the program stops immediately. */
698 if (run_how
== RUN_STOP_AT_FIRST_INSN
)
700 thread_info
*thr
= inferior_thread ();
701 thr
->suspend
.waitstatus_pending_p
= 1;
702 thr
->suspend
.waitstatus
.kind
= TARGET_WAITKIND_STOPPED
;
703 thr
->suspend
.waitstatus
.value
.sig
= GDB_SIGNAL_0
;
706 /* Start the target running. Do not use -1 continuation as it would skip
707 breakpoint right at the entry point. */
708 proceed (regcache_read_pc (get_current_regcache ()), GDB_SIGNAL_0
);
710 /* Since there was no error, there's no need to finish the thread
712 discard_cleanups (old_chain
);
716 run_command (char *args
, int from_tty
)
718 run_command_1 (args
, from_tty
, RUN_NORMAL
);
721 /* Start the execution of the program up until the beginning of the main
725 start_command (char *args
, int from_tty
)
727 /* Some languages such as Ada need to search inside the program
728 minimal symbols for the location where to put the temporary
729 breakpoint before starting. */
730 if (!have_minimal_symbols ())
731 error (_("No symbol table loaded. Use the \"file\" command."));
733 /* Run the program until reaching the main procedure... */
734 run_command_1 (args
, from_tty
, RUN_STOP_AT_MAIN
);
737 /* Start the execution of the program stopping at the first
741 starti_command (char *args
, int from_tty
)
743 run_command_1 (args
, from_tty
, RUN_STOP_AT_FIRST_INSN
);
747 proceed_thread_callback (struct thread_info
*thread
, void *arg
)
749 /* We go through all threads individually instead of compressing
750 into a single target `resume_all' request, because some threads
751 may be stopped in internal breakpoints/events, or stopped waiting
752 for its turn in the displaced stepping queue (that is, they are
753 running && !executing). The target side has no idea about why
754 the thread is stopped, so a `resume_all' command would resume too
755 much. If/when GDB gains a way to tell the target `hold this
756 thread stopped until I say otherwise', then we can optimize
758 if (!is_stopped (thread
->ptid
))
761 switch_to_thread (thread
->ptid
);
762 clear_proceed_status (0);
763 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
);
768 ensure_valid_thread (void)
770 if (ptid_equal (inferior_ptid
, null_ptid
)
771 || is_exited (inferior_ptid
))
772 error (_("Cannot execute this command without a live selected thread."));
775 /* If the user is looking at trace frames, any resumption of execution
776 is likely to mix up recorded and live target data. So simply
777 disallow those commands. */
780 ensure_not_tfind_mode (void)
782 if (get_traceframe_number () >= 0)
783 error (_("Cannot execute this command while looking at trace frames."));
786 /* Throw an error indicating the current thread is running. */
789 error_is_running (void)
791 error (_("Cannot execute this command while "
792 "the selected thread is running."));
795 /* Calls error_is_running if the current thread is running. */
798 ensure_not_running (void)
800 if (is_running (inferior_ptid
))
805 continue_1 (int all_threads
)
808 ensure_not_tfind_mode ();
810 if (non_stop
&& all_threads
)
812 /* Don't error out if the current thread is running, because
813 there may be other stopped threads. */
815 /* Backup current thread and selected frame and restore on scope
817 scoped_restore_current_thread restore_thread
;
819 iterate_over_threads (proceed_thread_callback
, NULL
);
821 if (current_ui
->prompt_state
== PROMPT_BLOCKED
)
823 /* If all threads in the target were already running,
824 proceed_thread_callback ends up never calling proceed,
825 and so nothing calls this to put the inferior's terminal
826 settings in effect and remove stdin from the event loop,
827 which we must when running a foreground command. E.g.:
831 <all threads are running now>
834 <no thread was resumed, but the inferior now owns the terminal>
836 target_terminal::inferior ();
841 ensure_valid_thread ();
842 ensure_not_running ();
843 clear_proceed_status (0);
844 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
);
848 /* continue [-a] [proceed-count] [&] */
851 continue_command (char *args
, int from_tty
)
855 struct cleanup
*args_chain
;
859 /* Find out whether we must run in the background. */
860 args
= strip_bg_char (args
, &async_exec
);
861 args_chain
= make_cleanup (xfree
, args
);
865 if (startswith (args
, "-a"))
868 args
+= sizeof ("-a") - 1;
874 if (!non_stop
&& all_threads
)
875 error (_("`-a' is meaningless in all-stop mode."));
877 if (args
!= NULL
&& all_threads
)
878 error (_("Can't resume all threads and specify "
879 "proceed count simultaneously."));
881 /* If we have an argument left, set proceed count of breakpoint we
888 struct thread_info
*tp
;
891 tp
= find_thread_ptid (inferior_ptid
);
895 struct target_waitstatus ws
;
897 get_last_target_status (&last_ptid
, &ws
);
898 tp
= find_thread_ptid (last_ptid
);
901 bs
= tp
->control
.stop_bpstat
;
903 while ((stat
= bpstat_num (&bs
, &num
)) != 0)
906 set_ignore_count (num
,
907 parse_and_eval_long (args
) - 1,
909 /* set_ignore_count prints a message ending with a period.
910 So print two spaces before "Continuing.". */
912 printf_filtered (" ");
916 if (!stopped
&& from_tty
)
919 ("Not stopped at any breakpoint; argument ignored.\n");
923 /* Done with ARGS. */
924 do_cleanups (args_chain
);
927 ensure_not_tfind_mode ();
929 if (!non_stop
|| !all_threads
)
931 ensure_valid_thread ();
932 ensure_not_running ();
935 prepare_execution_command (¤t_target
, async_exec
);
938 printf_filtered (_("Continuing.\n"));
940 continue_1 (all_threads
);
943 /* Record the starting point of a "step" or "next" command. */
946 set_step_frame (void)
948 frame_info
*frame
= get_current_frame ();
950 symtab_and_line sal
= find_frame_sal (frame
);
951 set_step_info (frame
, sal
);
953 CORE_ADDR pc
= get_frame_pc (frame
);
954 thread_info
*tp
= inferior_thread ();
955 tp
->control
.step_start_function
= find_pc_function (pc
);
958 /* Step until outside of current statement. */
961 step_command (char *count_string
, int from_tty
)
963 step_1 (0, 0, count_string
);
966 /* Likewise, but skip over subroutine calls as if single instructions. */
969 next_command (char *count_string
, int from_tty
)
971 step_1 (1, 0, count_string
);
974 /* Likewise, but step only one instruction. */
977 stepi_command (char *count_string
, int from_tty
)
979 step_1 (0, 1, count_string
);
983 nexti_command (char *count_string
, int from_tty
)
985 step_1 (1, 1, count_string
);
989 delete_longjmp_breakpoint_cleanup (void *arg
)
991 int thread
= * (int *) arg
;
992 delete_longjmp_breakpoint (thread
);
995 /* Data for the FSM that manages the step/next/stepi/nexti
998 struct step_command_fsm
1000 /* The base class. */
1001 struct thread_fsm thread_fsm
;
1003 /* How many steps left in a "step N"-like command. */
1006 /* If true, this is a next/nexti, otherwise a step/stepi. */
1007 int skip_subroutines
;
1009 /* If true, this is a stepi/nexti, otherwise a step/step. */
1013 static void step_command_fsm_clean_up (struct thread_fsm
*self
,
1014 struct thread_info
*thread
);
1015 static int step_command_fsm_should_stop (struct thread_fsm
*self
,
1016 struct thread_info
*thread
);
1017 static enum async_reply_reason
1018 step_command_fsm_async_reply_reason (struct thread_fsm
*self
);
1020 /* step_command_fsm's vtable. */
1022 static struct thread_fsm_ops step_command_fsm_ops
=
1025 step_command_fsm_clean_up
,
1026 step_command_fsm_should_stop
,
1027 NULL
, /* return_value */
1028 step_command_fsm_async_reply_reason
,
1031 /* Allocate a new step_command_fsm. */
1033 static struct step_command_fsm
*
1034 new_step_command_fsm (struct interp
*cmd_interp
)
1036 struct step_command_fsm
*sm
;
1038 sm
= XCNEW (struct step_command_fsm
);
1039 thread_fsm_ctor (&sm
->thread_fsm
, &step_command_fsm_ops
, cmd_interp
);
1044 /* Prepare for a step/next/etc. command. Any target resource
1045 allocated here is undone in the FSM's clean_up method. */
1048 step_command_fsm_prepare (struct step_command_fsm
*sm
,
1049 int skip_subroutines
, int single_inst
,
1050 int count
, struct thread_info
*thread
)
1052 sm
->skip_subroutines
= skip_subroutines
;
1053 sm
->single_inst
= single_inst
;
1056 /* Leave the si command alone. */
1057 if (!sm
->single_inst
|| sm
->skip_subroutines
)
1058 set_longjmp_breakpoint (thread
, get_frame_id (get_current_frame ()));
1060 thread
->control
.stepping_command
= 1;
1063 static int prepare_one_step (struct step_command_fsm
*sm
);
1066 step_1 (int skip_subroutines
, int single_inst
, char *count_string
)
1070 struct cleanup
*args_chain
;
1071 struct thread_info
*thr
;
1072 struct step_command_fsm
*step_sm
;
1075 ensure_not_tfind_mode ();
1076 ensure_valid_thread ();
1077 ensure_not_running ();
1079 count_string
= strip_bg_char (count_string
, &async_exec
);
1080 args_chain
= make_cleanup (xfree
, count_string
);
1082 prepare_execution_command (¤t_target
, async_exec
);
1084 count
= count_string
? parse_and_eval_long (count_string
) : 1;
1086 /* Done with ARGS. */
1087 do_cleanups (args_chain
);
1089 clear_proceed_status (1);
1091 /* Setup the execution command state machine to handle all the COUNT
1093 thr
= inferior_thread ();
1094 step_sm
= new_step_command_fsm (command_interp ());
1095 thr
->thread_fsm
= &step_sm
->thread_fsm
;
1097 step_command_fsm_prepare (step_sm
, skip_subroutines
,
1098 single_inst
, count
, thr
);
1100 /* Do only one step for now, before returning control to the event
1101 loop. Let the continuation figure out how many other steps we
1102 need to do, and handle them one at the time, through
1104 if (!prepare_one_step (step_sm
))
1105 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
);
1110 /* Stepped into an inline frame. Pretend that we've
1112 thread_fsm_clean_up (thr
->thread_fsm
, thr
);
1113 proceeded
= normal_stop ();
1115 inferior_event_handler (INF_EXEC_COMPLETE
, NULL
);
1116 all_uis_check_sync_execution_done ();
1120 /* Implementation of the 'should_stop' FSM method for stepping
1121 commands. Called after we are done with one step operation, to
1122 check whether we need to step again, before we print the prompt and
1123 return control to the user. If count is > 1, returns false, as we
1124 will need to keep going. */
1127 step_command_fsm_should_stop (struct thread_fsm
*self
, struct thread_info
*tp
)
1129 struct step_command_fsm
*sm
= (struct step_command_fsm
*) self
;
1131 if (tp
->control
.stop_step
)
1133 /* There are more steps to make, and we did stop due to
1134 ending a stepping range. Do another step. */
1135 if (--sm
->count
> 0)
1136 return prepare_one_step (sm
);
1138 thread_fsm_set_finished (self
);
1144 /* Implementation of the 'clean_up' FSM method for stepping commands. */
1147 step_command_fsm_clean_up (struct thread_fsm
*self
, struct thread_info
*thread
)
1149 struct step_command_fsm
*sm
= (struct step_command_fsm
*) self
;
1151 if (!sm
->single_inst
|| sm
->skip_subroutines
)
1152 delete_longjmp_breakpoint (thread
->global_num
);
1155 /* Implementation of the 'async_reply_reason' FSM method for stepping
1158 static enum async_reply_reason
1159 step_command_fsm_async_reply_reason (struct thread_fsm
*self
)
1161 return EXEC_ASYNC_END_STEPPING_RANGE
;
1164 /* Prepare for one step in "step N". The actual target resumption is
1165 done by the caller. Return true if we're done and should thus
1166 report a stop to the user. Returns false if the target needs to be
1170 prepare_one_step (struct step_command_fsm
*sm
)
1174 struct frame_info
*frame
= get_current_frame ();
1176 /* Don't assume THREAD is a valid thread id. It is set to -1 if
1177 the longjmp breakpoint was not required. Use the
1178 INFERIOR_PTID thread instead, which is the same thread when
1180 struct thread_info
*tp
= inferior_thread ();
1184 if (!sm
->single_inst
)
1188 /* Step at an inlined function behaves like "down". */
1189 if (!sm
->skip_subroutines
1190 && inline_skipped_frames (inferior_ptid
))
1194 /* Pretend that we've ran. */
1195 resume_ptid
= user_visible_resume_ptid (1);
1196 set_running (resume_ptid
, 1);
1198 step_into_inline_frame (inferior_ptid
);
1200 return prepare_one_step (sm
);
1203 pc
= get_frame_pc (frame
);
1204 find_pc_line_pc_range (pc
,
1205 &tp
->control
.step_range_start
,
1206 &tp
->control
.step_range_end
);
1208 tp
->control
.may_range_step
= 1;
1210 /* If we have no line info, switch to stepi mode. */
1211 if (tp
->control
.step_range_end
== 0 && step_stop_if_no_debug
)
1213 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1214 tp
->control
.may_range_step
= 0;
1216 else if (tp
->control
.step_range_end
== 0)
1220 if (find_pc_partial_function (pc
, &name
,
1221 &tp
->control
.step_range_start
,
1222 &tp
->control
.step_range_end
) == 0)
1223 error (_("Cannot find bounds of current function"));
1225 target_terminal::ours_for_output ();
1226 printf_filtered (_("Single stepping until exit from function %s,"
1227 "\nwhich has no line number information.\n"),
1233 /* Say we are stepping, but stop after one insn whatever it does. */
1234 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1235 if (!sm
->skip_subroutines
)
1237 Don't step over function calls, not even to functions lacking
1239 tp
->control
.step_over_calls
= STEP_OVER_NONE
;
1242 if (sm
->skip_subroutines
)
1243 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1249 thread_fsm_set_finished (&sm
->thread_fsm
);
1254 /* Continue program at specified address. */
1257 jump_command (char *arg
, int from_tty
)
1259 struct gdbarch
*gdbarch
= get_current_arch ();
1264 struct cleanup
*args_chain
;
1267 ensure_not_tfind_mode ();
1268 ensure_valid_thread ();
1269 ensure_not_running ();
1271 /* Find out whether we must run in the background. */
1272 arg
= strip_bg_char (arg
, &async_exec
);
1273 args_chain
= make_cleanup (xfree
, arg
);
1275 prepare_execution_command (¤t_target
, async_exec
);
1278 error_no_arg (_("starting address"));
1280 std::vector
<symtab_and_line
> sals
1281 = decode_line_with_last_displayed (arg
, DECODE_LINE_FUNFIRSTLINE
);
1282 if (sals
.size () != 1)
1283 error (_("Unreasonable jump request"));
1285 /* Done with ARGS. */
1286 do_cleanups (args_chain
);
1288 symtab_and_line
&sal
= sals
[0];
1290 if (sal
.symtab
== 0 && sal
.pc
== 0)
1291 error (_("No source file has been specified."));
1293 resolve_sal_pc (&sal
); /* May error out. */
1295 /* See if we are trying to jump to another function. */
1296 fn
= get_frame_function (get_current_frame ());
1297 sfn
= find_pc_function (sal
.pc
);
1298 if (fn
!= NULL
&& sfn
!= fn
)
1300 if (!query (_("Line %d is not in `%s'. Jump anyway? "), sal
.line
,
1301 SYMBOL_PRINT_NAME (fn
)))
1303 error (_("Not confirmed."));
1310 struct obj_section
*section
;
1312 fixup_symbol_section (sfn
, 0);
1313 section
= SYMBOL_OBJ_SECTION (symbol_objfile (sfn
), sfn
);
1314 if (section_is_overlay (section
)
1315 && !section_is_mapped (section
))
1317 if (!query (_("WARNING!!! Destination is in "
1318 "unmapped overlay! Jump anyway? ")))
1320 error (_("Not confirmed."));
1330 printf_filtered (_("Continuing at "));
1331 fputs_filtered (paddress (gdbarch
, addr
), gdb_stdout
);
1332 printf_filtered (".\n");
1335 clear_proceed_status (0);
1336 proceed (addr
, GDB_SIGNAL_0
);
1339 /* Continue program giving it specified signal. */
1342 signal_command (char *signum_exp
, int from_tty
)
1344 enum gdb_signal oursig
;
1346 struct cleanup
*args_chain
;
1348 dont_repeat (); /* Too dangerous. */
1350 ensure_not_tfind_mode ();
1351 ensure_valid_thread ();
1352 ensure_not_running ();
1354 /* Find out whether we must run in the background. */
1355 signum_exp
= strip_bg_char (signum_exp
, &async_exec
);
1356 args_chain
= make_cleanup (xfree
, signum_exp
);
1358 prepare_execution_command (¤t_target
, async_exec
);
1361 error_no_arg (_("signal number"));
1363 /* It would be even slicker to make signal names be valid expressions,
1364 (the type could be "enum $signal" or some such), then the user could
1365 assign them to convenience variables. */
1366 oursig
= gdb_signal_from_name (signum_exp
);
1368 if (oursig
== GDB_SIGNAL_UNKNOWN
)
1370 /* No, try numeric. */
1371 int num
= parse_and_eval_long (signum_exp
);
1374 oursig
= GDB_SIGNAL_0
;
1376 oursig
= gdb_signal_from_command (num
);
1379 do_cleanups (args_chain
);
1381 /* Look for threads other than the current that this command ends up
1382 resuming too (due to schedlock off), and warn if they'll get a
1383 signal delivered. "signal 0" is used to suppress a previous
1384 signal, but if the current thread is no longer the one that got
1385 the signal, then the user is potentially suppressing the signal
1386 of the wrong thread. */
1389 struct thread_info
*tp
;
1391 int must_confirm
= 0;
1393 /* This indicates what will be resumed. Either a single thread,
1394 a whole process, or all threads of all processes. */
1395 resume_ptid
= user_visible_resume_ptid (0);
1397 ALL_NON_EXITED_THREADS (tp
)
1399 if (ptid_equal (tp
->ptid
, inferior_ptid
))
1401 if (!ptid_match (tp
->ptid
, resume_ptid
))
1404 if (tp
->suspend
.stop_signal
!= GDB_SIGNAL_0
1405 && signal_pass_state (tp
->suspend
.stop_signal
))
1408 printf_unfiltered (_("Note:\n"));
1409 printf_unfiltered (_(" Thread %s previously stopped with signal %s, %s.\n"),
1410 print_thread_id (tp
),
1411 gdb_signal_to_name (tp
->suspend
.stop_signal
),
1412 gdb_signal_to_string (tp
->suspend
.stop_signal
));
1418 && !query (_("Continuing thread %s (the current thread) with specified signal will\n"
1419 "still deliver the signals noted above to their respective threads.\n"
1420 "Continue anyway? "),
1421 print_thread_id (inferior_thread ())))
1422 error (_("Not confirmed."));
1427 if (oursig
== GDB_SIGNAL_0
)
1428 printf_filtered (_("Continuing with no signal.\n"));
1430 printf_filtered (_("Continuing with signal %s.\n"),
1431 gdb_signal_to_name (oursig
));
1434 clear_proceed_status (0);
1435 proceed ((CORE_ADDR
) -1, oursig
);
1438 /* Queue a signal to be delivered to the current thread. */
1441 queue_signal_command (char *signum_exp
, int from_tty
)
1443 enum gdb_signal oursig
;
1444 struct thread_info
*tp
;
1447 ensure_not_tfind_mode ();
1448 ensure_valid_thread ();
1449 ensure_not_running ();
1451 if (signum_exp
== NULL
)
1452 error_no_arg (_("signal number"));
1454 /* It would be even slicker to make signal names be valid expressions,
1455 (the type could be "enum $signal" or some such), then the user could
1456 assign them to convenience variables. */
1457 oursig
= gdb_signal_from_name (signum_exp
);
1459 if (oursig
== GDB_SIGNAL_UNKNOWN
)
1461 /* No, try numeric. */
1462 int num
= parse_and_eval_long (signum_exp
);
1465 oursig
= GDB_SIGNAL_0
;
1467 oursig
= gdb_signal_from_command (num
);
1470 if (oursig
!= GDB_SIGNAL_0
1471 && !signal_pass_state (oursig
))
1472 error (_("Signal handling set to not pass this signal to the program."));
1474 tp
= inferior_thread ();
1475 tp
->suspend
.stop_signal
= oursig
;
1478 /* Data for the FSM that manages the until (with no argument)
1481 struct until_next_fsm
1483 /* The base class. */
1484 struct thread_fsm thread_fsm
;
1486 /* The thread that as current when the command was executed. */
1490 static int until_next_fsm_should_stop (struct thread_fsm
*self
,
1491 struct thread_info
*thread
);
1492 static void until_next_fsm_clean_up (struct thread_fsm
*self
,
1493 struct thread_info
*thread
);
1494 static enum async_reply_reason
1495 until_next_fsm_async_reply_reason (struct thread_fsm
*self
);
1497 /* until_next_fsm's vtable. */
1499 static struct thread_fsm_ops until_next_fsm_ops
=
1502 until_next_fsm_clean_up
,
1503 until_next_fsm_should_stop
,
1504 NULL
, /* return_value */
1505 until_next_fsm_async_reply_reason
,
1508 /* Allocate a new until_next_fsm. */
1510 static struct until_next_fsm
*
1511 new_until_next_fsm (struct interp
*cmd_interp
, int thread
)
1513 struct until_next_fsm
*sm
;
1515 sm
= XCNEW (struct until_next_fsm
);
1516 thread_fsm_ctor (&sm
->thread_fsm
, &until_next_fsm_ops
, cmd_interp
);
1518 sm
->thread
= thread
;
1523 /* Implementation of the 'should_stop' FSM method for the until (with
1527 until_next_fsm_should_stop (struct thread_fsm
*self
,
1528 struct thread_info
*tp
)
1530 if (tp
->control
.stop_step
)
1531 thread_fsm_set_finished (self
);
1536 /* Implementation of the 'clean_up' FSM method for the until (with no
1540 until_next_fsm_clean_up (struct thread_fsm
*self
, struct thread_info
*thread
)
1542 struct until_next_fsm
*sm
= (struct until_next_fsm
*) self
;
1544 delete_longjmp_breakpoint (thread
->global_num
);
1547 /* Implementation of the 'async_reply_reason' FSM method for the until
1548 (with no arg) command. */
1550 static enum async_reply_reason
1551 until_next_fsm_async_reply_reason (struct thread_fsm
*self
)
1553 return EXEC_ASYNC_END_STEPPING_RANGE
;
1556 /* Proceed until we reach a different source line with pc greater than
1557 our current one or exit the function. We skip calls in both cases.
1559 Note that eventually this command should probably be changed so
1560 that only source lines are printed out when we hit the breakpoint
1561 we set. This may involve changes to wait_for_inferior and the
1562 proceed status code. */
1565 until_next_command (int from_tty
)
1567 struct frame_info
*frame
;
1569 struct symbol
*func
;
1570 struct symtab_and_line sal
;
1571 struct thread_info
*tp
= inferior_thread ();
1572 int thread
= tp
->global_num
;
1573 struct cleanup
*old_chain
;
1574 struct until_next_fsm
*sm
;
1576 clear_proceed_status (0);
1579 frame
= get_current_frame ();
1581 /* Step until either exited from this function or greater
1582 than the current line (if in symbolic section) or pc (if
1585 pc
= get_frame_pc (frame
);
1586 func
= find_pc_function (pc
);
1590 struct bound_minimal_symbol msymbol
= lookup_minimal_symbol_by_pc (pc
);
1592 if (msymbol
.minsym
== NULL
)
1593 error (_("Execution is not within a known function."));
1595 tp
->control
.step_range_start
= BMSYMBOL_VALUE_ADDRESS (msymbol
);
1596 /* The upper-bound of step_range is exclusive. In order to make PC
1597 within the range, set the step_range_end with PC + 1. */
1598 tp
->control
.step_range_end
= pc
+ 1;
1602 sal
= find_pc_line (pc
, 0);
1604 tp
->control
.step_range_start
= BLOCK_START (SYMBOL_BLOCK_VALUE (func
));
1605 tp
->control
.step_range_end
= sal
.end
;
1607 tp
->control
.may_range_step
= 1;
1609 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1611 set_longjmp_breakpoint (tp
, get_frame_id (frame
));
1612 old_chain
= make_cleanup (delete_longjmp_breakpoint_cleanup
, &thread
);
1614 sm
= new_until_next_fsm (command_interp (), tp
->global_num
);
1615 tp
->thread_fsm
= &sm
->thread_fsm
;
1616 discard_cleanups (old_chain
);
1618 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
);
1622 until_command (char *arg
, int from_tty
)
1625 struct cleanup
*args_chain
;
1628 ensure_not_tfind_mode ();
1629 ensure_valid_thread ();
1630 ensure_not_running ();
1632 /* Find out whether we must run in the background. */
1633 arg
= strip_bg_char (arg
, &async_exec
);
1634 args_chain
= make_cleanup (xfree
, arg
);
1636 prepare_execution_command (¤t_target
, async_exec
);
1639 until_break_command (arg
, from_tty
, 0);
1641 until_next_command (from_tty
);
1643 /* Done with ARGS. */
1644 do_cleanups (args_chain
);
1648 advance_command (char *arg
, int from_tty
)
1651 struct cleanup
*args_chain
;
1654 ensure_not_tfind_mode ();
1655 ensure_valid_thread ();
1656 ensure_not_running ();
1659 error_no_arg (_("a location"));
1661 /* Find out whether we must run in the background. */
1662 arg
= strip_bg_char (arg
, &async_exec
);
1663 args_chain
= make_cleanup (xfree
, arg
);
1665 prepare_execution_command (¤t_target
, async_exec
);
1667 until_break_command (arg
, from_tty
, 1);
1669 /* Done with ARGS. */
1670 do_cleanups (args_chain
);
1673 /* Return the value of the result of a function at the end of a 'finish'
1674 command/BP. DTOR_DATA (if not NULL) can represent inferior registers
1675 right after an inferior call has finished. */
1678 get_return_value (struct value
*function
, struct type
*value_type
)
1680 regcache
stop_regs (regcache::readonly
, *get_current_regcache ());
1681 struct gdbarch
*gdbarch
= stop_regs
.arch ();
1682 struct value
*value
;
1684 value_type
= check_typedef (value_type
);
1685 gdb_assert (TYPE_CODE (value_type
) != TYPE_CODE_VOID
);
1687 /* FIXME: 2003-09-27: When returning from a nested inferior function
1688 call, it's possible (with no help from the architecture vector)
1689 to locate and return/print a "struct return" value. This is just
1690 a more complicated case of what is already being done in the
1691 inferior function call code. In fact, when inferior function
1692 calls are made async, this will likely be made the norm. */
1694 switch (gdbarch_return_value (gdbarch
, function
, value_type
,
1697 case RETURN_VALUE_REGISTER_CONVENTION
:
1698 case RETURN_VALUE_ABI_RETURNS_ADDRESS
:
1699 case RETURN_VALUE_ABI_PRESERVES_ADDRESS
:
1700 value
= allocate_value (value_type
);
1701 gdbarch_return_value (gdbarch
, function
, value_type
, &stop_regs
,
1702 value_contents_raw (value
), NULL
);
1704 case RETURN_VALUE_STRUCT_CONVENTION
:
1708 internal_error (__FILE__
, __LINE__
, _("bad switch"));
1714 /* The captured function return value/type and its position in the
1717 struct return_value_info
1719 /* The captured return value. May be NULL if we weren't able to
1720 retrieve it. See get_return_value. */
1721 struct value
*value
;
1723 /* The return type. In some cases, we'll not be able extract the
1724 return value, but we always know the type. */
1727 /* If we captured a value, this is the value history index. */
1728 int value_history_index
;
1731 /* Helper for print_return_value. */
1734 print_return_value_1 (struct ui_out
*uiout
, struct return_value_info
*rv
)
1736 if (rv
->value
!= NULL
)
1738 struct value_print_options opts
;
1741 uiout
->text ("Value returned is ");
1742 uiout
->field_fmt ("gdb-result-var", "$%d",
1743 rv
->value_history_index
);
1744 uiout
->text (" = ");
1745 get_no_prettyformat_print_options (&opts
);
1749 value_print (rv
->value
, &stb
, &opts
);
1750 uiout
->field_stream ("return-value", stb
);
1755 std::string type_name
= type_to_string (rv
->type
);
1756 uiout
->text ("Value returned has type: ");
1757 uiout
->field_string ("return-type", type_name
.c_str ());
1759 uiout
->text (" Cannot determine contents\n");
1763 /* Print the result of a function at the end of a 'finish' command.
1764 RV points at an object representing the captured return value/type
1765 and its position in the value history. */
1768 print_return_value (struct ui_out
*uiout
, struct return_value_info
*rv
)
1770 if (rv
->type
== NULL
|| TYPE_CODE (rv
->type
) == TYPE_CODE_VOID
)
1775 /* print_return_value_1 can throw an exception in some
1776 circumstances. We need to catch this so that we still
1777 delete the breakpoint. */
1778 print_return_value_1 (uiout
, rv
);
1780 CATCH (ex
, RETURN_MASK_ALL
)
1782 exception_print (gdb_stdout
, ex
);
1787 /* Data for the FSM that manages the finish command. */
1789 struct finish_command_fsm
1791 /* The base class. */
1792 struct thread_fsm thread_fsm
;
1794 /* The momentary breakpoint set at the function's return address in
1796 struct breakpoint
*breakpoint
;
1798 /* The function that we're stepping out of. */
1799 struct symbol
*function
;
1801 /* If the FSM finishes successfully, this stores the function's
1803 struct return_value_info return_value
;
1806 static int finish_command_fsm_should_stop (struct thread_fsm
*self
,
1807 struct thread_info
*thread
);
1808 static void finish_command_fsm_clean_up (struct thread_fsm
*self
,
1809 struct thread_info
*thread
);
1810 static struct return_value_info
*
1811 finish_command_fsm_return_value (struct thread_fsm
*self
);
1812 static enum async_reply_reason
1813 finish_command_fsm_async_reply_reason (struct thread_fsm
*self
);
1815 /* finish_command_fsm's vtable. */
1817 static struct thread_fsm_ops finish_command_fsm_ops
=
1820 finish_command_fsm_clean_up
,
1821 finish_command_fsm_should_stop
,
1822 finish_command_fsm_return_value
,
1823 finish_command_fsm_async_reply_reason
,
1824 NULL
, /* should_notify_stop */
1827 /* Allocate a new finish_command_fsm. */
1829 static struct finish_command_fsm
*
1830 new_finish_command_fsm (struct interp
*cmd_interp
)
1832 struct finish_command_fsm
*sm
;
1834 sm
= XCNEW (struct finish_command_fsm
);
1835 thread_fsm_ctor (&sm
->thread_fsm
, &finish_command_fsm_ops
, cmd_interp
);
1840 /* Implementation of the 'should_stop' FSM method for the finish
1841 commands. Detects whether the thread stepped out of the function
1842 successfully, and if so, captures the function's return value and
1843 marks the FSM finished. */
1846 finish_command_fsm_should_stop (struct thread_fsm
*self
,
1847 struct thread_info
*tp
)
1849 struct finish_command_fsm
*f
= (struct finish_command_fsm
*) self
;
1850 struct return_value_info
*rv
= &f
->return_value
;
1852 if (f
->function
!= NULL
1853 && bpstat_find_breakpoint (tp
->control
.stop_bpstat
,
1854 f
->breakpoint
) != NULL
)
1857 thread_fsm_set_finished (self
);
1859 rv
->type
= TYPE_TARGET_TYPE (SYMBOL_TYPE (f
->function
));
1860 if (rv
->type
== NULL
)
1861 internal_error (__FILE__
, __LINE__
,
1862 _("finish_command: function has no target type"));
1864 if (TYPE_CODE (rv
->type
) != TYPE_CODE_VOID
)
1868 func
= read_var_value (f
->function
, NULL
, get_current_frame ());
1869 rv
->value
= get_return_value (func
, rv
->type
);
1870 if (rv
->value
!= NULL
)
1871 rv
->value_history_index
= record_latest_value (rv
->value
);
1874 else if (tp
->control
.stop_step
)
1876 /* Finishing from an inline frame, or reverse finishing. In
1877 either case, there's no way to retrieve the return value. */
1878 thread_fsm_set_finished (self
);
1884 /* Implementation of the 'clean_up' FSM method for the finish
1888 finish_command_fsm_clean_up (struct thread_fsm
*self
,
1889 struct thread_info
*thread
)
1891 struct finish_command_fsm
*f
= (struct finish_command_fsm
*) self
;
1893 if (f
->breakpoint
!= NULL
)
1895 delete_breakpoint (f
->breakpoint
);
1896 f
->breakpoint
= NULL
;
1898 delete_longjmp_breakpoint (thread
->global_num
);
1901 /* Implementation of the 'return_value' FSM method for the finish
1904 static struct return_value_info
*
1905 finish_command_fsm_return_value (struct thread_fsm
*self
)
1907 struct finish_command_fsm
*f
= (struct finish_command_fsm
*) self
;
1909 return &f
->return_value
;
1912 /* Implementation of the 'async_reply_reason' FSM method for the
1915 static enum async_reply_reason
1916 finish_command_fsm_async_reply_reason (struct thread_fsm
*self
)
1918 if (execution_direction
== EXEC_REVERSE
)
1919 return EXEC_ASYNC_END_STEPPING_RANGE
;
1921 return EXEC_ASYNC_FUNCTION_FINISHED
;
1924 /* finish_backward -- helper function for finish_command. */
1927 finish_backward (struct finish_command_fsm
*sm
)
1929 struct symtab_and_line sal
;
1930 struct thread_info
*tp
= inferior_thread ();
1932 CORE_ADDR func_addr
;
1934 pc
= get_frame_pc (get_current_frame ());
1936 if (find_pc_partial_function (pc
, NULL
, &func_addr
, NULL
) == 0)
1937 error (_("Cannot find bounds of current function"));
1939 sal
= find_pc_line (func_addr
, 0);
1941 tp
->control
.proceed_to_finish
= 1;
1942 /* Special case: if we're sitting at the function entry point,
1943 then all we need to do is take a reverse singlestep. We
1944 don't need to set a breakpoint, and indeed it would do us
1947 Note that this can only happen at frame #0, since there's
1948 no way that a function up the stack can have a return address
1949 that's equal to its entry point. */
1953 struct frame_info
*frame
= get_selected_frame (NULL
);
1954 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
1956 /* Set a step-resume at the function's entry point. Once that's
1957 hit, we'll do one more step backwards. */
1958 symtab_and_line sr_sal
;
1960 sr_sal
.pspace
= get_frame_program_space (frame
);
1961 insert_step_resume_breakpoint_at_sal (gdbarch
,
1962 sr_sal
, null_frame_id
);
1964 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
);
1968 /* We're almost there -- we just need to back up by one more
1970 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1971 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
);
1975 /* finish_forward -- helper function for finish_command. FRAME is the
1976 frame that called the function we're about to step out of. */
1979 finish_forward (struct finish_command_fsm
*sm
, struct frame_info
*frame
)
1981 struct frame_id frame_id
= get_frame_id (frame
);
1982 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
1983 struct symtab_and_line sal
;
1984 struct thread_info
*tp
= inferior_thread ();
1986 sal
= find_pc_line (get_frame_pc (frame
), 0);
1987 sal
.pc
= get_frame_pc (frame
);
1989 sm
->breakpoint
= set_momentary_breakpoint (gdbarch
, sal
,
1990 get_stack_frame_id (frame
),
1993 /* set_momentary_breakpoint invalidates FRAME. */
1996 set_longjmp_breakpoint (tp
, frame_id
);
1998 /* We want to print return value, please... */
1999 tp
->control
.proceed_to_finish
= 1;
2001 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
);
2004 /* Skip frames for "finish". */
2006 static struct frame_info
*
2007 skip_finish_frames (struct frame_info
*frame
)
2009 struct frame_info
*start
;
2015 frame
= skip_tailcall_frames (frame
);
2019 frame
= skip_unwritable_frames (frame
);
2023 while (start
!= frame
);
2028 /* "finish": Set a temporary breakpoint at the place the selected
2029 frame will return to, then continue. */
2032 finish_command (char *arg
, int from_tty
)
2034 struct frame_info
*frame
;
2036 struct cleanup
*args_chain
;
2037 struct finish_command_fsm
*sm
;
2038 struct thread_info
*tp
;
2041 ensure_not_tfind_mode ();
2042 ensure_valid_thread ();
2043 ensure_not_running ();
2045 /* Find out whether we must run in the background. */
2046 arg
= strip_bg_char (arg
, &async_exec
);
2047 args_chain
= make_cleanup (xfree
, arg
);
2049 prepare_execution_command (¤t_target
, async_exec
);
2052 error (_("The \"finish\" command does not take any arguments."));
2054 /* Done with ARGS. */
2055 do_cleanups (args_chain
);
2057 frame
= get_prev_frame (get_selected_frame (_("No selected frame.")));
2059 error (_("\"finish\" not meaningful in the outermost frame."));
2061 clear_proceed_status (0);
2063 tp
= inferior_thread ();
2065 sm
= new_finish_command_fsm (command_interp ());
2067 tp
->thread_fsm
= &sm
->thread_fsm
;
2069 /* Finishing from an inline frame is completely different. We don't
2070 try to show the "return value" - no way to locate it. */
2071 if (get_frame_type (get_selected_frame (_("No selected frame.")))
2074 /* Claim we are stepping in the calling frame. An empty step
2075 range means that we will stop once we aren't in a function
2076 called by that frame. We don't use the magic "1" value for
2077 step_range_end, because then infrun will think this is nexti,
2078 and not step over the rest of this inlined function call. */
2079 set_step_info (frame
, {});
2080 tp
->control
.step_range_start
= get_frame_pc (frame
);
2081 tp
->control
.step_range_end
= tp
->control
.step_range_start
;
2082 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
2084 /* Print info on the selected frame, including level number but not
2088 printf_filtered (_("Run till exit from "));
2089 print_stack_frame (get_selected_frame (NULL
), 1, LOCATION
, 0);
2092 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
);
2096 /* Find the function we will return from. */
2098 sm
->function
= find_pc_function (get_frame_pc (get_selected_frame (NULL
)));
2100 /* Print info on the selected frame, including level number but not
2104 if (execution_direction
== EXEC_REVERSE
)
2105 printf_filtered (_("Run back to call of "));
2108 if (sm
->function
!= NULL
&& TYPE_NO_RETURN (sm
->function
->type
)
2109 && !query (_("warning: Function %s does not return normally.\n"
2110 "Try to finish anyway? "),
2111 SYMBOL_PRINT_NAME (sm
->function
)))
2112 error (_("Not confirmed."));
2113 printf_filtered (_("Run till exit from "));
2116 print_stack_frame (get_selected_frame (NULL
), 1, LOCATION
, 0);
2119 if (execution_direction
== EXEC_REVERSE
)
2120 finish_backward (sm
);
2123 frame
= skip_finish_frames (frame
);
2126 error (_("Cannot find the caller frame."));
2128 finish_forward (sm
, frame
);
2134 info_program_command (char *args
, int from_tty
)
2138 struct thread_info
*tp
;
2141 if (!target_has_execution
)
2143 printf_filtered (_("The program being debugged is not being run.\n"));
2148 ptid
= inferior_ptid
;
2151 struct target_waitstatus ws
;
2153 get_last_target_status (&ptid
, &ws
);
2156 if (ptid_equal (ptid
, null_ptid
) || is_exited (ptid
))
2157 error (_("Invalid selected thread."));
2158 else if (is_running (ptid
))
2159 error (_("Selected thread is running."));
2161 tp
= find_thread_ptid (ptid
);
2162 bs
= tp
->control
.stop_bpstat
;
2163 stat
= bpstat_num (&bs
, &num
);
2165 target_files_info ();
2166 printf_filtered (_("Program stopped at %s.\n"),
2167 paddress (target_gdbarch (), stop_pc
));
2168 if (tp
->control
.stop_step
)
2169 printf_filtered (_("It stopped after being stepped.\n"));
2172 /* There may be several breakpoints in the same place, so this
2173 isn't as strange as it seems. */
2178 printf_filtered (_("It stopped at a breakpoint "
2179 "that has since been deleted.\n"));
2182 printf_filtered (_("It stopped at breakpoint %d.\n"), num
);
2183 stat
= bpstat_num (&bs
, &num
);
2186 else if (tp
->suspend
.stop_signal
!= GDB_SIGNAL_0
)
2188 printf_filtered (_("It stopped with signal %s, %s.\n"),
2189 gdb_signal_to_name (tp
->suspend
.stop_signal
),
2190 gdb_signal_to_string (tp
->suspend
.stop_signal
));
2195 printf_filtered (_("Type \"info stack\" or \"info "
2196 "registers\" for more information.\n"));
2201 environment_info (const char *var
, int from_tty
)
2205 const char *val
= current_inferior ()->environment
.get (var
);
2209 puts_filtered (var
);
2210 puts_filtered (" = ");
2211 puts_filtered (val
);
2212 puts_filtered ("\n");
2216 puts_filtered ("Environment variable \"");
2217 puts_filtered (var
);
2218 puts_filtered ("\" not defined.\n");
2223 char **envp
= current_inferior ()->environment
.envp ();
2225 for (int idx
= 0; envp
[idx
] != NULL
; ++idx
)
2227 puts_filtered (envp
[idx
]);
2228 puts_filtered ("\n");
2234 set_environment_command (const char *arg
, int from_tty
)
2236 const char *p
, *val
;
2240 error_no_arg (_("environment variable and value"));
2242 /* Find seperation between variable name and value. */
2243 p
= (char *) strchr (arg
, '=');
2244 val
= (char *) strchr (arg
, ' ');
2246 if (p
!= 0 && val
!= 0)
2248 /* We have both a space and an equals. If the space is before the
2249 equals, walk forward over the spaces til we see a nonspace
2250 (possibly the equals). */
2255 /* Now if the = is after the char following the spaces,
2256 take the char following the spaces. */
2260 else if (val
!= 0 && p
== 0)
2264 error_no_arg (_("environment variable to set"));
2266 if (p
== 0 || p
[1] == 0)
2270 p
= arg
+ strlen (arg
); /* So that savestring below will work. */
2274 /* Not setting variable value to null. */
2276 while (*val
== ' ' || *val
== '\t')
2280 while (p
!= arg
&& (p
[-1] == ' ' || p
[-1] == '\t'))
2283 std::string
var (arg
, p
- arg
);
2286 printf_filtered (_("Setting environment variable "
2287 "\"%s\" to null value.\n"),
2289 current_inferior ()->environment
.set (var
.c_str (), "");
2292 current_inferior ()->environment
.set (var
.c_str (), val
);
2296 unset_environment_command (const char *var
, int from_tty
)
2300 /* If there is no argument, delete all environment variables.
2301 Ask for confirmation if reading from the terminal. */
2302 if (!from_tty
|| query (_("Delete all environment variables? ")))
2303 current_inferior ()->environment
.clear ();
2306 current_inferior ()->environment
.unset (var
);
2309 /* Handle the execution path (PATH variable). */
2311 static const char path_var_name
[] = "PATH";
2314 path_info (const char *args
, int from_tty
)
2316 puts_filtered ("Executable and object file path: ");
2317 puts_filtered (current_inferior ()->environment
.get (path_var_name
));
2318 puts_filtered ("\n");
2321 /* Add zero or more directories to the front of the execution path. */
2324 path_command (char *dirname
, int from_tty
)
2330 env
= current_inferior ()->environment
.get (path_var_name
);
2331 /* Can be null if path is not set. */
2334 exec_path
= xstrdup (env
);
2335 mod_path (dirname
, &exec_path
);
2336 current_inferior ()->environment
.set (path_var_name
, exec_path
);
2339 path_info ((char *) NULL
, from_tty
);
2343 /* Print out the register NAME with value VAL, to FILE, in the default
2347 default_print_one_register_info (struct ui_file
*file
,
2351 struct type
*regtype
= value_type (val
);
2352 int print_raw_format
;
2354 fputs_filtered (name
, file
);
2355 print_spaces_filtered (15 - strlen (name
), file
);
2357 print_raw_format
= (value_entirely_available (val
)
2358 && !value_optimized_out (val
));
2360 /* If virtual format is floating, print it that way, and in raw
2362 if (TYPE_CODE (regtype
) == TYPE_CODE_FLT
2363 || TYPE_CODE (regtype
) == TYPE_CODE_DECFLOAT
)
2365 struct value_print_options opts
;
2366 const gdb_byte
*valaddr
= value_contents_for_printing (val
);
2367 enum bfd_endian byte_order
= gdbarch_byte_order (get_type_arch (regtype
));
2369 get_user_print_options (&opts
);
2373 value_embedded_offset (val
), 0,
2374 file
, 0, val
, &opts
, current_language
);
2376 if (print_raw_format
)
2378 fprintf_filtered (file
, "\t(raw ");
2379 print_hex_chars (file
, valaddr
, TYPE_LENGTH (regtype
), byte_order
,
2381 fprintf_filtered (file
, ")");
2386 struct value_print_options opts
;
2388 /* Print the register in hex. */
2389 get_formatted_print_options (&opts
, 'x');
2392 value_embedded_offset (val
), 0,
2393 file
, 0, val
, &opts
, current_language
);
2394 /* If not a vector register, print it also according to its
2396 if (print_raw_format
&& TYPE_VECTOR (regtype
) == 0)
2398 get_user_print_options (&opts
);
2400 fprintf_filtered (file
, "\t");
2402 value_embedded_offset (val
), 0,
2403 file
, 0, val
, &opts
, current_language
);
2407 fprintf_filtered (file
, "\n");
2410 /* Print out the machine register regnum. If regnum is -1, print all
2411 registers (print_all == 1) or all non-float and non-vector
2412 registers (print_all == 0).
2414 For most machines, having all_registers_info() print the
2415 register(s) one per line is good enough. If a different format is
2416 required, (eg, for MIPS or Pyramid 90x, which both have lots of
2417 regs), or there is an existing convention for showing all the
2418 registers, define the architecture method PRINT_REGISTERS_INFO to
2419 provide that format. */
2422 default_print_registers_info (struct gdbarch
*gdbarch
,
2423 struct ui_file
*file
,
2424 struct frame_info
*frame
,
2425 int regnum
, int print_all
)
2428 const int numregs
= gdbarch_num_regs (gdbarch
)
2429 + gdbarch_num_pseudo_regs (gdbarch
);
2431 for (i
= 0; i
< numregs
; i
++)
2433 /* Decide between printing all regs, non-float / vector regs, or
2439 if (!gdbarch_register_reggroup_p (gdbarch
, i
, all_reggroup
))
2444 if (!gdbarch_register_reggroup_p (gdbarch
, i
, general_reggroup
))
2454 /* If the register name is empty, it is undefined for this
2455 processor, so don't display anything. */
2456 if (gdbarch_register_name (gdbarch
, i
) == NULL
2457 || *(gdbarch_register_name (gdbarch
, i
)) == '\0')
2460 default_print_one_register_info (file
,
2461 gdbarch_register_name (gdbarch
, i
),
2462 value_of_register (i
, frame
));
2467 registers_info (char *addr_exp
, int fpregs
)
2469 struct frame_info
*frame
;
2470 struct gdbarch
*gdbarch
;
2472 if (!target_has_registers
)
2473 error (_("The program has no registers now."));
2474 frame
= get_selected_frame (NULL
);
2475 gdbarch
= get_frame_arch (frame
);
2479 gdbarch_print_registers_info (gdbarch
, gdb_stdout
,
2484 while (*addr_exp
!= '\0')
2489 /* Skip leading white space. */
2490 addr_exp
= skip_spaces (addr_exp
);
2492 /* Discard any leading ``$''. Check that there is something
2493 resembling a register following it. */
2494 if (addr_exp
[0] == '$')
2496 if (isspace ((*addr_exp
)) || (*addr_exp
) == '\0')
2497 error (_("Missing register name"));
2499 /* Find the start/end of this register name/num/group. */
2501 while ((*addr_exp
) != '\0' && !isspace ((*addr_exp
)))
2505 /* Figure out what we've found and display it. */
2507 /* A register name? */
2509 int regnum
= user_reg_map_name_to_regnum (gdbarch
, start
, end
- start
);
2513 /* User registers lie completely outside of the range of
2514 normal registers. Catch them early so that the target
2516 if (regnum
>= gdbarch_num_regs (gdbarch
)
2517 + gdbarch_num_pseudo_regs (gdbarch
))
2519 struct value
*regval
= value_of_user_reg (regnum
, frame
);
2520 const char *regname
= user_reg_map_regnum_to_name (gdbarch
,
2523 /* Print in the same fashion
2524 gdbarch_print_registers_info's default
2525 implementation prints. */
2526 default_print_one_register_info (gdb_stdout
,
2531 gdbarch_print_registers_info (gdbarch
, gdb_stdout
,
2532 frame
, regnum
, fpregs
);
2537 /* A register group? */
2539 struct reggroup
*group
;
2541 for (group
= reggroup_next (gdbarch
, NULL
);
2543 group
= reggroup_next (gdbarch
, group
))
2545 /* Don't bother with a length check. Should the user
2546 enter a short register group name, go with the first
2547 group that matches. */
2548 if (strncmp (start
, reggroup_name (group
), end
- start
) == 0)
2556 regnum
< gdbarch_num_regs (gdbarch
)
2557 + gdbarch_num_pseudo_regs (gdbarch
);
2560 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, group
))
2561 gdbarch_print_registers_info (gdbarch
,
2569 /* Nothing matched. */
2570 error (_("Invalid register `%.*s'"), (int) (end
- start
), start
);
2575 info_all_registers_command (char *addr_exp
, int from_tty
)
2577 registers_info (addr_exp
, 1);
2581 info_registers_command (char *addr_exp
, int from_tty
)
2583 registers_info (addr_exp
, 0);
2587 print_vector_info (struct ui_file
*file
,
2588 struct frame_info
*frame
, const char *args
)
2590 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
2592 if (gdbarch_print_vector_info_p (gdbarch
))
2593 gdbarch_print_vector_info (gdbarch
, file
, frame
, args
);
2597 int printed_something
= 0;
2600 regnum
< gdbarch_num_regs (gdbarch
)
2601 + gdbarch_num_pseudo_regs (gdbarch
);
2604 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, vector_reggroup
))
2606 printed_something
= 1;
2607 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
2610 if (!printed_something
)
2611 fprintf_filtered (file
, "No vector information\n");
2616 info_vector_command (char *args
, int from_tty
)
2618 if (!target_has_registers
)
2619 error (_("The program has no registers now."));
2621 print_vector_info (gdb_stdout
, get_selected_frame (NULL
), args
);
2624 /* Kill the inferior process. Make us have no inferior. */
2627 kill_command (char *arg
, int from_tty
)
2629 /* FIXME: This should not really be inferior_ptid (or target_has_execution).
2630 It should be a distinct flag that indicates that a target is active, cuz
2631 some targets don't have processes! */
2633 if (ptid_equal (inferior_ptid
, null_ptid
))
2634 error (_("The program is not being run."));
2635 if (!query (_("Kill the program being debugged? ")))
2636 error (_("Not confirmed."));
2639 /* If we still have other inferiors to debug, then don't mess with
2640 with their threads. */
2641 if (!have_inferiors ())
2643 init_thread_list (); /* Destroy thread info. */
2645 /* Killing off the inferior can leave us with a core file. If
2646 so, print the state we are left in. */
2647 if (target_has_stack
)
2649 printf_filtered (_("In %s,\n"), target_longname
);
2650 print_stack_frame (get_selected_frame (NULL
), 1, SRC_AND_LOC
, 1);
2653 bfd_cache_close_all ();
2656 /* Used in `attach&' command. ARG is a point to an integer
2657 representing a process id. Proceed threads of this process iff
2658 they stopped due to debugger request, and when they did, they
2659 reported a clean stop (GDB_SIGNAL_0). Do not proceed threads
2660 that have been explicitly been told to stop. */
2663 proceed_after_attach_callback (struct thread_info
*thread
,
2666 int pid
= * (int *) arg
;
2668 if (ptid_get_pid (thread
->ptid
) == pid
2669 && !is_exited (thread
->ptid
)
2670 && !is_executing (thread
->ptid
)
2671 && !thread
->stop_requested
2672 && thread
->suspend
.stop_signal
== GDB_SIGNAL_0
)
2674 switch_to_thread (thread
->ptid
);
2675 clear_proceed_status (0);
2676 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
);
2683 proceed_after_attach (int pid
)
2685 /* Don't error out if the current thread is running, because
2686 there may be other stopped threads. */
2688 /* Backup current thread and selected frame. */
2689 scoped_restore_current_thread restore_thread
;
2691 iterate_over_threads (proceed_after_attach_callback
, &pid
);
2694 /* See inferior.h. */
2697 setup_inferior (int from_tty
)
2699 struct inferior
*inferior
;
2701 inferior
= current_inferior ();
2702 inferior
->needs_setup
= 0;
2704 /* If no exec file is yet known, try to determine it from the
2706 if (get_exec_file (0) == NULL
)
2707 exec_file_locate_attach (ptid_get_pid (inferior_ptid
), 1, from_tty
);
2710 reopen_exec_file ();
2714 /* Take any necessary post-attaching actions for this platform. */
2715 target_post_attach (ptid_get_pid (inferior_ptid
));
2717 post_create_inferior (¤t_target
, from_tty
);
2720 /* What to do after the first program stops after attaching. */
2721 enum attach_post_wait_mode
2723 /* Do nothing. Leaves threads as they are. */
2724 ATTACH_POST_WAIT_NOTHING
,
2726 /* Re-resume threads that are marked running. */
2727 ATTACH_POST_WAIT_RESUME
,
2729 /* Stop all threads. */
2730 ATTACH_POST_WAIT_STOP
,
2733 /* Called after we've attached to a process and we've seen it stop for
2734 the first time. If ASYNC_EXEC is true, re-resume threads that
2735 should be running. Else if ATTACH, */
2738 attach_post_wait (const char *args
, int from_tty
, enum attach_post_wait_mode mode
)
2740 struct inferior
*inferior
;
2742 inferior
= current_inferior ();
2743 inferior
->control
.stop_soon
= NO_STOP_QUIETLY
;
2745 if (inferior
->needs_setup
)
2746 setup_inferior (from_tty
);
2748 if (mode
== ATTACH_POST_WAIT_RESUME
)
2750 /* The user requested an `attach&', so be sure to leave threads
2751 that didn't get a signal running. */
2753 /* Immediatelly resume all suspended threads of this inferior,
2754 and this inferior only. This should have no effect on
2755 already running threads. If a thread has been stopped with a
2756 signal, leave it be. */
2758 proceed_after_attach (inferior
->pid
);
2761 if (inferior_thread ()->suspend
.stop_signal
== GDB_SIGNAL_0
)
2763 clear_proceed_status (0);
2764 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
);
2768 else if (mode
== ATTACH_POST_WAIT_STOP
)
2770 /* The user requested a plain `attach', so be sure to leave
2771 the inferior stopped. */
2773 /* At least the current thread is already stopped. */
2775 /* In all-stop, by definition, all threads have to be already
2776 stopped at this point. In non-stop, however, although the
2777 selected thread is stopped, others may still be executing.
2778 Be sure to explicitly stop all threads of the process. This
2779 should have no effect on already stopped threads. */
2781 target_stop (pid_to_ptid (inferior
->pid
));
2782 else if (target_is_non_stop_p ())
2784 struct thread_info
*thread
;
2785 struct thread_info
*lowest
= inferior_thread ();
2786 int pid
= current_inferior ()->pid
;
2788 stop_all_threads ();
2790 /* It's not defined which thread will report the attach
2791 stop. For consistency, always select the thread with
2792 lowest GDB number, which should be the main thread, if it
2794 ALL_NON_EXITED_THREADS (thread
)
2796 if (ptid_get_pid (thread
->ptid
) == pid
)
2798 if (thread
->inf
->num
< lowest
->inf
->num
2799 || thread
->per_inf_num
< lowest
->per_inf_num
)
2804 switch_to_thread (lowest
->ptid
);
2807 /* Tell the user/frontend where we're stopped. */
2809 if (deprecated_attach_hook
)
2810 deprecated_attach_hook ();
2814 struct attach_command_continuation_args
2818 enum attach_post_wait_mode mode
;
2822 attach_command_continuation (void *args
, int err
)
2824 struct attach_command_continuation_args
*a
2825 = (struct attach_command_continuation_args
*) args
;
2830 attach_post_wait (a
->args
, a
->from_tty
, a
->mode
);
2834 attach_command_continuation_free_args (void *args
)
2836 struct attach_command_continuation_args
*a
2837 = (struct attach_command_continuation_args
*) args
;
2843 /* "attach" command entry point. Takes a program started up outside
2844 of gdb and ``attaches'' to it. This stops it cold in its tracks
2845 and allows us to start debugging it. */
2848 attach_command (char *args
, int from_tty
)
2851 struct cleanup
*args_chain
;
2852 struct target_ops
*attach_target
;
2853 struct inferior
*inferior
= current_inferior ();
2854 enum attach_post_wait_mode mode
;
2856 dont_repeat (); /* Not for the faint of heart */
2858 if (gdbarch_has_global_solist (target_gdbarch ()))
2859 /* Don't complain if all processes share the same symbol
2862 else if (target_has_execution
)
2864 if (query (_("A program is being debugged already. Kill it? ")))
2867 error (_("Not killed."));
2870 /* Clean up any leftovers from other runs. Some other things from
2871 this function should probably be moved into target_pre_inferior. */
2872 target_pre_inferior (from_tty
);
2874 args
= strip_bg_char (args
, &async_exec
);
2875 args_chain
= make_cleanup (xfree
, args
);
2877 attach_target
= find_attach_target ();
2879 prepare_execution_command (attach_target
, async_exec
);
2881 if (non_stop
&& !attach_target
->to_supports_non_stop (attach_target
))
2882 error (_("Cannot attach to this target in non-stop mode"));
2884 attach_target
->to_attach (attach_target
, args
, from_tty
);
2885 /* to_attach should push the target, so after this point we
2886 shouldn't refer to attach_target again. */
2887 attach_target
= NULL
;
2889 /* Set up the "saved terminal modes" of the inferior
2890 based on what modes we are starting it with. */
2891 target_terminal::init ();
2893 /* Install inferior's terminal modes. This may look like a no-op,
2894 as we've just saved them above, however, this does more than
2895 restore terminal settings:
2897 - installs a SIGINT handler that forwards SIGINT to the inferior.
2898 Otherwise a Ctrl-C pressed just while waiting for the initial
2899 stop would end up as a spurious Quit.
2901 - removes stdin from the event loop, which we need if attaching
2902 in the foreground, otherwise on targets that report an initial
2903 stop on attach (which are most) we'd process input/commands
2904 while we're in the event loop waiting for that stop. That is,
2905 before the attach continuation runs and the command is really
2907 target_terminal::inferior ();
2909 /* Set up execution context to know that we should return from
2910 wait_for_inferior as soon as the target reports a stop. */
2911 init_wait_for_inferior ();
2912 clear_proceed_status (0);
2914 inferior
->needs_setup
= 1;
2916 if (target_is_non_stop_p ())
2918 /* If we find that the current thread isn't stopped, explicitly
2919 do so now, because we're going to install breakpoints and
2923 /* The user requested an `attach&'; stop just one thread. */
2924 target_stop (inferior_ptid
);
2926 /* The user requested an `attach', so stop all threads of this
2928 target_stop (pid_to_ptid (ptid_get_pid (inferior_ptid
)));
2931 mode
= async_exec
? ATTACH_POST_WAIT_RESUME
: ATTACH_POST_WAIT_STOP
;
2933 /* Some system don't generate traps when attaching to inferior.
2934 E.g. Mach 3 or GNU hurd. */
2935 if (!target_attach_no_wait
)
2937 struct attach_command_continuation_args
*a
;
2939 /* Careful here. See comments in inferior.h. Basically some
2940 OSes don't ignore SIGSTOPs on continue requests anymore. We
2941 need a way for handle_inferior_event to reset the stop_signal
2942 variable after an attach, and this is what
2943 STOP_QUIETLY_NO_SIGSTOP is for. */
2944 inferior
->control
.stop_soon
= STOP_QUIETLY_NO_SIGSTOP
;
2946 /* Wait for stop. */
2947 a
= XNEW (struct attach_command_continuation_args
);
2948 a
->args
= xstrdup (args
);
2949 a
->from_tty
= from_tty
;
2951 add_inferior_continuation (attach_command_continuation
, a
,
2952 attach_command_continuation_free_args
);
2953 /* Done with ARGS. */
2954 do_cleanups (args_chain
);
2956 if (!target_is_async_p ())
2957 mark_infrun_async_event_handler ();
2961 /* Done with ARGS. */
2962 do_cleanups (args_chain
);
2964 attach_post_wait (args
, from_tty
, mode
);
2967 /* We had just found out that the target was already attached to an
2968 inferior. PTID points at a thread of this new inferior, that is
2969 the most likely to be stopped right now, but not necessarily so.
2970 The new inferior is assumed to be already added to the inferior
2971 list at this point. If LEAVE_RUNNING, then leave the threads of
2972 this inferior running, except those we've explicitly seen reported
2976 notice_new_inferior (ptid_t ptid
, int leave_running
, int from_tty
)
2978 enum attach_post_wait_mode mode
2979 = leave_running
? ATTACH_POST_WAIT_RESUME
: ATTACH_POST_WAIT_NOTHING
;
2981 gdb::optional
<scoped_restore_current_thread
> restore_thread
;
2983 if (inferior_ptid
!= null_ptid
)
2984 restore_thread
.emplace ();
2986 /* Avoid reading registers -- we haven't fetched the target
2988 switch_to_thread_no_regs (find_thread_ptid (ptid
));
2990 /* When we "notice" a new inferior we need to do all the things we
2991 would normally do if we had just attached to it. */
2993 if (is_executing (inferior_ptid
))
2995 struct attach_command_continuation_args
*a
;
2996 struct inferior
*inferior
= current_inferior ();
2998 /* We're going to install breakpoints, and poke at memory,
2999 ensure that the inferior is stopped for a moment while we do
3001 target_stop (inferior_ptid
);
3003 inferior
->control
.stop_soon
= STOP_QUIETLY_REMOTE
;
3005 /* Wait for stop before proceeding. */
3006 a
= XNEW (struct attach_command_continuation_args
);
3007 a
->args
= xstrdup ("");
3008 a
->from_tty
= from_tty
;
3010 add_inferior_continuation (attach_command_continuation
, a
,
3011 attach_command_continuation_free_args
);
3016 attach_post_wait ("" /* args */, from_tty
, mode
);
3021 * takes a program previously attached to and detaches it.
3022 * The program resumes execution and will no longer stop
3023 * on signals, etc. We better not have left any breakpoints
3024 * in the program or it'll die when it hits one. For this
3025 * to work, it may be necessary for the process to have been
3026 * previously attached. It *might* work if the program was
3027 * started via the normal ptrace (PTRACE_TRACEME).
3031 detach_command (char *args
, int from_tty
)
3033 dont_repeat (); /* Not for the faint of heart. */
3035 if (ptid_equal (inferior_ptid
, null_ptid
))
3036 error (_("The program is not being run."));
3038 query_if_trace_running (from_tty
);
3040 disconnect_tracing ();
3042 target_detach (args
, from_tty
);
3044 /* The current inferior process was just detached successfully. Get
3045 rid of breakpoints that no longer make sense. Note we don't do
3046 this within target_detach because that is also used when
3047 following child forks, and in that case we will want to transfer
3048 breakpoints to the child, not delete them. */
3049 breakpoint_init_inferior (inf_exited
);
3051 /* If the solist is global across inferiors, don't clear it when we
3052 detach from a single inferior. */
3053 if (!gdbarch_has_global_solist (target_gdbarch ()))
3054 no_shared_libraries (NULL
, from_tty
);
3056 /* If we still have inferiors to debug, then don't mess with their
3058 if (!have_inferiors ())
3059 init_thread_list ();
3061 if (deprecated_detach_hook
)
3062 deprecated_detach_hook ();
3065 /* Disconnect from the current target without resuming it (leaving it
3066 waiting for a debugger).
3068 We'd better not have left any breakpoints in the program or the
3069 next debugger will get confused. Currently only supported for some
3070 remote targets, since the normal attach mechanisms don't work on
3071 stopped processes on some native platforms (e.g. GNU/Linux). */
3074 disconnect_command (char *args
, int from_tty
)
3076 dont_repeat (); /* Not for the faint of heart. */
3077 query_if_trace_running (from_tty
);
3078 disconnect_tracing ();
3079 target_disconnect (args
, from_tty
);
3080 no_shared_libraries (NULL
, from_tty
);
3081 init_thread_list ();
3082 if (deprecated_detach_hook
)
3083 deprecated_detach_hook ();
3087 interrupt_target_1 (int all_threads
)
3092 ptid
= minus_one_ptid
;
3094 ptid
= inferior_ptid
;
3099 target_interrupt (ptid
);
3101 /* Tag the thread as having been explicitly requested to stop, so
3102 other parts of gdb know not to resume this thread automatically,
3103 if it was stopped due to an internal event. Limit this to
3104 non-stop mode, as when debugging a multi-threaded application in
3105 all-stop mode, we will only get one stop event --- it's undefined
3106 which thread will report the event. */
3108 set_stop_requested (ptid
, 1);
3112 Stop the execution of the target while running in async mode, in
3113 the background. In all-stop, stop the whole process. In non-stop
3114 mode, stop the current thread only by default, or stop all threads
3115 if the `-a' switch is used. */
3118 interrupt_command (char *args
, int from_tty
)
3120 if (target_can_async_p ())
3122 int all_threads
= 0;
3124 dont_repeat (); /* Not for the faint of heart. */
3127 && startswith (args
, "-a"))
3130 if (!non_stop
&& all_threads
)
3131 error (_("-a is meaningless in all-stop mode."));
3133 interrupt_target_1 (all_threads
);
3137 /* See inferior.h. */
3140 default_print_float_info (struct gdbarch
*gdbarch
, struct ui_file
*file
,
3141 struct frame_info
*frame
, const char *args
)
3144 int printed_something
= 0;
3147 regnum
< gdbarch_num_regs (gdbarch
)
3148 + gdbarch_num_pseudo_regs (gdbarch
);
3151 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, float_reggroup
))
3153 printed_something
= 1;
3154 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
3157 if (!printed_something
)
3158 fprintf_filtered (file
, "No floating-point info "
3159 "available for this processor.\n");
3163 info_float_command (char *args
, int from_tty
)
3165 struct frame_info
*frame
;
3167 if (!target_has_registers
)
3168 error (_("The program has no registers now."));
3170 frame
= get_selected_frame (NULL
);
3171 gdbarch_print_float_info (get_frame_arch (frame
), gdb_stdout
, frame
, args
);
3175 unset_command (char *args
, int from_tty
)
3177 printf_filtered (_("\"unset\" must be followed by the "
3178 "name of an unset subcommand.\n"));
3179 help_list (unsetlist
, "unset ", all_commands
, gdb_stdout
);
3182 /* Implement `info proc' family of commands. */
3185 info_proc_cmd_1 (const char *args
, enum info_proc_what what
, int from_tty
)
3187 struct gdbarch
*gdbarch
= get_current_arch ();
3189 if (!target_info_proc (args
, what
))
3191 if (gdbarch_info_proc_p (gdbarch
))
3192 gdbarch_info_proc (gdbarch
, args
, what
);
3194 error (_("Not supported on this target."));
3198 /* Implement `info proc' when given without any futher parameters. */
3201 info_proc_cmd (char *args
, int from_tty
)
3203 info_proc_cmd_1 (args
, IP_MINIMAL
, from_tty
);
3206 /* Implement `info proc mappings'. */
3209 info_proc_cmd_mappings (const char *args
, int from_tty
)
3211 info_proc_cmd_1 (args
, IP_MAPPINGS
, from_tty
);
3214 /* Implement `info proc stat'. */
3217 info_proc_cmd_stat (const char *args
, int from_tty
)
3219 info_proc_cmd_1 (args
, IP_STAT
, from_tty
);
3222 /* Implement `info proc status'. */
3225 info_proc_cmd_status (const char *args
, int from_tty
)
3227 info_proc_cmd_1 (args
, IP_STATUS
, from_tty
);
3230 /* Implement `info proc cwd'. */
3233 info_proc_cmd_cwd (const char *args
, int from_tty
)
3235 info_proc_cmd_1 (args
, IP_CWD
, from_tty
);
3238 /* Implement `info proc cmdline'. */
3241 info_proc_cmd_cmdline (const char *args
, int from_tty
)
3243 info_proc_cmd_1 (args
, IP_CMDLINE
, from_tty
);
3246 /* Implement `info proc exe'. */
3249 info_proc_cmd_exe (const char *args
, int from_tty
)
3251 info_proc_cmd_1 (args
, IP_EXE
, from_tty
);
3254 /* Implement `info proc all'. */
3257 info_proc_cmd_all (const char *args
, int from_tty
)
3259 info_proc_cmd_1 (args
, IP_ALL
, from_tty
);
3262 /* This help string is used for the run, start, and starti commands.
3263 It is defined as a macro to prevent duplication. */
3265 #define RUN_ARGS_HELP \
3266 "You may specify arguments to give it.\n\
3267 Args may include \"*\", or \"[...]\"; they are expanded using the\n\
3268 shell that will start the program (specified by the \"$SHELL\" environment\n\
3269 variable). Input and output redirection with \">\", \"<\", or \">>\"\n\
3270 are also allowed.\n\
3272 With no arguments, uses arguments last specified (with \"run\" or \n\
3273 \"set args\"). To cancel previous arguments and run with no arguments,\n\
3274 use \"set args\" without arguments.\n\
3276 To start the inferior without using a shell, use \"set startup-with-shell off\"."
3279 _initialize_infcmd (void)
3281 static struct cmd_list_element
*info_proc_cmdlist
;
3282 struct cmd_list_element
*c
= NULL
;
3283 const char *cmd_name
;
3285 /* Add the filename of the terminal connected to inferior I/O. */
3286 add_setshow_optional_filename_cmd ("inferior-tty", class_run
,
3287 &inferior_io_terminal_scratch
, _("\
3288 Set terminal for future runs of program being debugged."), _("\
3289 Show terminal for future runs of program being debugged."), _("\
3290 Usage: set inferior-tty [TTY]\n\n\
3291 If TTY is omitted, the default behavior of using the same terminal as GDB\n\
3293 set_inferior_tty_command
,
3294 show_inferior_tty_command
,
3295 &setlist
, &showlist
);
3296 cmd_name
= "inferior-tty";
3297 c
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
3298 gdb_assert (c
!= NULL
);
3299 add_alias_cmd ("tty", c
, class_alias
, 0, &cmdlist
);
3302 add_setshow_string_noescape_cmd (cmd_name
, class_run
,
3303 &inferior_args_scratch
, _("\
3304 Set argument list to give program being debugged when it is started."), _("\
3305 Show argument list to give program being debugged when it is started."), _("\
3306 Follow this command with any number of args, to be passed to the program."),
3309 &setlist
, &showlist
);
3310 c
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
3311 gdb_assert (c
!= NULL
);
3312 set_cmd_completer (c
, filename_completer
);
3315 add_setshow_string_noescape_cmd (cmd_name
, class_run
,
3316 &inferior_cwd_scratch
, _("\
3317 Set the current working directory to be used when the inferior is started.\n\
3318 Changing this setting does not have any effect on inferiors that are\n\
3321 Show the current working directory that is used when the inferior is started."),
3323 Use this command to change the current working directory that will be used\n\
3324 when the inferior is started. This setting does not affect GDB's current\n\
3325 working directory."),
3328 &setlist
, &showlist
);
3329 c
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
3330 gdb_assert (c
!= NULL
);
3331 set_cmd_completer (c
, filename_completer
);
3333 c
= add_cmd ("environment", no_class
, environment_info
, _("\
3334 The environment to give the program, or one variable's value.\n\
3335 With an argument VAR, prints the value of environment variable VAR to\n\
3336 give the program being debugged. With no arguments, prints the entire\n\
3337 environment to be given to the program."), &showlist
);
3338 set_cmd_completer (c
, noop_completer
);
3340 add_prefix_cmd ("unset", no_class
, unset_command
,
3341 _("Complement to certain \"set\" commands."),
3342 &unsetlist
, "unset ", 0, &cmdlist
);
3344 c
= add_cmd ("environment", class_run
, unset_environment_command
, _("\
3345 Cancel environment variable VAR for the program.\n\
3346 This does not affect the program until the next \"run\" command."),
3348 set_cmd_completer (c
, noop_completer
);
3350 c
= add_cmd ("environment", class_run
, set_environment_command
, _("\
3351 Set environment variable value to give the program.\n\
3352 Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\
3353 VALUES of environment variables are uninterpreted strings.\n\
3354 This does not affect the program until the next \"run\" command."),
3356 set_cmd_completer (c
, noop_completer
);
3358 c
= add_com ("path", class_files
, path_command
, _("\
3359 Add directory DIR(s) to beginning of search path for object files.\n\
3360 $cwd in the path means the current working directory.\n\
3361 This path is equivalent to the $PATH shell variable. It is a list of\n\
3362 directories, separated by colons. These directories are searched to find\n\
3363 fully linked executable files and separately compiled object files as \
3365 set_cmd_completer (c
, filename_completer
);
3367 c
= add_cmd ("paths", no_class
, path_info
, _("\
3368 Current search path for finding object files.\n\
3369 $cwd in the path means the current working directory.\n\
3370 This path is equivalent to the $PATH shell variable. It is a list of\n\
3371 directories, separated by colons. These directories are searched to find\n\
3372 fully linked executable files and separately compiled object files as \
3375 set_cmd_completer (c
, noop_completer
);
3377 add_prefix_cmd ("kill", class_run
, kill_command
,
3378 _("Kill execution of program being debugged."),
3379 &killlist
, "kill ", 0, &cmdlist
);
3381 add_com ("attach", class_run
, attach_command
, _("\
3382 Attach to a process or file outside of GDB.\n\
3383 This command attaches to another target, of the same type as your last\n\
3384 \"target\" command (\"info files\" will show your target stack).\n\
3385 The command may take as argument a process id or a device file.\n\
3386 For a process id, you must have permission to send the process a signal,\n\
3387 and it must have the same effective uid as the debugger.\n\
3388 When using \"attach\" with a process id, the debugger finds the\n\
3389 program running in the process, looking first in the current working\n\
3390 directory, or (if not found there) using the source file search path\n\
3391 (see the \"directory\" command). You can also use the \"file\" command\n\
3392 to specify the program, and to load its symbol table."));
3394 add_prefix_cmd ("detach", class_run
, detach_command
, _("\
3395 Detach a process or file previously attached.\n\
3396 If a process, it is no longer traced, and it continues its execution. If\n\
3397 you were debugging a file, the file is closed and gdb no longer accesses it."),
3398 &detachlist
, "detach ", 0, &cmdlist
);
3400 add_com ("disconnect", class_run
, disconnect_command
, _("\
3401 Disconnect from a target.\n\
3402 The target will wait for another debugger to connect. Not available for\n\
3405 c
= add_com ("signal", class_run
, signal_command
, _("\
3406 Continue program with the specified signal.\n\
3407 Usage: signal SIGNAL\n\
3408 The SIGNAL argument is processed the same as the handle command.\n\
3410 An argument of \"0\" means continue the program without sending it a signal.\n\
3411 This is useful in cases where the program stopped because of a signal,\n\
3412 and you want to resume the program while discarding the signal.\n\
3414 In a multi-threaded program the signal is delivered to, or discarded from,\n\
3415 the current thread only."));
3416 set_cmd_completer (c
, signal_completer
);
3418 c
= add_com ("queue-signal", class_run
, queue_signal_command
, _("\
3419 Queue a signal to be delivered to the current thread when it is resumed.\n\
3420 Usage: queue-signal SIGNAL\n\
3421 The SIGNAL argument is processed the same as the handle command.\n\
3422 It is an error if the handling state of SIGNAL is \"nopass\".\n\
3424 An argument of \"0\" means remove any currently queued signal from\n\
3425 the current thread. This is useful in cases where the program stopped\n\
3426 because of a signal, and you want to resume it while discarding the signal.\n\
3428 In a multi-threaded program the signal is queued with, or discarded from,\n\
3429 the current thread only."));
3430 set_cmd_completer (c
, signal_completer
);
3432 add_com ("stepi", class_run
, stepi_command
, _("\
3433 Step one instruction exactly.\n\
3435 Argument N means step N times (or till program stops for another \
3437 add_com_alias ("si", "stepi", class_alias
, 0);
3439 add_com ("nexti", class_run
, nexti_command
, _("\
3440 Step one instruction, but proceed through subroutine calls.\n\
3442 Argument N means step N times (or till program stops for another \
3444 add_com_alias ("ni", "nexti", class_alias
, 0);
3446 add_com ("finish", class_run
, finish_command
, _("\
3447 Execute until selected stack frame returns.\n\
3449 Upon return, the value returned is printed and put in the value history."));
3450 add_com_alias ("fin", "finish", class_run
, 1);
3452 add_com ("next", class_run
, next_command
, _("\
3453 Step program, proceeding through subroutine calls.\n\
3455 Unlike \"step\", if the current source line calls a subroutine,\n\
3456 this command does not enter the subroutine, but instead steps over\n\
3457 the call, in effect treating it as a single source line."));
3458 add_com_alias ("n", "next", class_run
, 1);
3460 add_com ("step", class_run
, step_command
, _("\
3461 Step program until it reaches a different source line.\n\
3463 Argument N means step N times (or till program stops for another \
3465 add_com_alias ("s", "step", class_run
, 1);
3467 c
= add_com ("until", class_run
, until_command
, _("\
3468 Execute until the program reaches a source line greater than the current\n\
3469 or a specified location (same args as break command) within the current \
3471 set_cmd_completer (c
, location_completer
);
3472 add_com_alias ("u", "until", class_run
, 1);
3474 c
= add_com ("advance", class_run
, advance_command
, _("\
3475 Continue the program up to the given location (same form as args for break \
3477 Execution will also stop upon exit from the current stack frame."));
3478 set_cmd_completer (c
, location_completer
);
3480 c
= add_com ("jump", class_run
, jump_command
, _("\
3481 Continue program being debugged at specified line or address.\n\
3482 Usage: jump <location>\n\
3483 Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\
3484 for an address to start at."));
3485 set_cmd_completer (c
, location_completer
);
3486 add_com_alias ("j", "jump", class_run
, 1);
3488 add_com ("continue", class_run
, continue_command
, _("\
3489 Continue program being debugged, after signal or breakpoint.\n\
3490 Usage: continue [N]\n\
3491 If proceeding from breakpoint, a number N may be used as an argument,\n\
3492 which means to set the ignore count of that breakpoint to N - 1 (so that\n\
3493 the breakpoint won't break until the Nth time it is reached).\n\
3495 If non-stop mode is enabled, continue only the current thread,\n\
3496 otherwise all the threads in the program are continued. To \n\
3497 continue all stopped threads in non-stop mode, use the -a option.\n\
3498 Specifying -a and an ignore count simultaneously is an error."));
3499 add_com_alias ("c", "cont", class_run
, 1);
3500 add_com_alias ("fg", "cont", class_run
, 1);
3502 c
= add_com ("run", class_run
, run_command
, _("\
3503 Start debugged program.\n"
3505 set_cmd_completer (c
, filename_completer
);
3506 add_com_alias ("r", "run", class_run
, 1);
3508 c
= add_com ("start", class_run
, start_command
, _("\
3509 Start the debugged program stopping at the beginning of the main procedure.\n"
3511 set_cmd_completer (c
, filename_completer
);
3513 c
= add_com ("starti", class_run
, starti_command
, _("\
3514 Start the debugged program stopping at the first instruction.\n"
3516 set_cmd_completer (c
, filename_completer
);
3518 add_com ("interrupt", class_run
, interrupt_command
,
3519 _("Interrupt the execution of the debugged program.\n\
3520 If non-stop mode is enabled, interrupt only the current thread,\n\
3521 otherwise all the threads in the program are stopped. To \n\
3522 interrupt all running threads in non-stop mode, use the -a option."));
3524 c
= add_info ("registers", info_registers_command
, _("\
3525 List of integer registers and their contents, for selected stack frame.\n\
3526 Register name as argument means describe only that register."));
3527 add_info_alias ("r", "registers", 1);
3528 set_cmd_completer (c
, reg_or_group_completer
);
3530 c
= add_info ("all-registers", info_all_registers_command
, _("\
3531 List of all registers and their contents, for selected stack frame.\n\
3532 Register name as argument means describe only that register."));
3533 set_cmd_completer (c
, reg_or_group_completer
);
3535 add_info ("program", info_program_command
,
3536 _("Execution status of the program."));
3538 add_info ("float", info_float_command
,
3539 _("Print the status of the floating point unit\n"));
3541 add_info ("vector", info_vector_command
,
3542 _("Print the status of the vector unit\n"));
3544 add_prefix_cmd ("proc", class_info
, info_proc_cmd
,
3546 Show /proc process information about any running process.\n\
3547 Specify any process id, or use the program being debugged by default."),
3548 &info_proc_cmdlist
, "info proc ",
3549 1/*allow-unknown*/, &infolist
);
3551 add_cmd ("mappings", class_info
, info_proc_cmd_mappings
, _("\
3552 List of mapped memory regions."),
3553 &info_proc_cmdlist
);
3555 add_cmd ("stat", class_info
, info_proc_cmd_stat
, _("\
3556 List process info from /proc/PID/stat."),
3557 &info_proc_cmdlist
);
3559 add_cmd ("status", class_info
, info_proc_cmd_status
, _("\
3560 List process info from /proc/PID/status."),
3561 &info_proc_cmdlist
);
3563 add_cmd ("cwd", class_info
, info_proc_cmd_cwd
, _("\
3564 List current working directory of the process."),
3565 &info_proc_cmdlist
);
3567 add_cmd ("cmdline", class_info
, info_proc_cmd_cmdline
, _("\
3568 List command line arguments of the process."),
3569 &info_proc_cmdlist
);
3571 add_cmd ("exe", class_info
, info_proc_cmd_exe
, _("\
3572 List absolute filename for executable of the process."),
3573 &info_proc_cmdlist
);
3575 add_cmd ("all", class_info
, info_proc_cmd_all
, _("\
3576 List all available /proc info."),
3577 &info_proc_cmdlist
);