1 /* Memory-access and commands for "inferior" process, for GDB.
3 Copyright (C) 1986-2019 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
21 #include "arch-utils.h"
36 #include "completer.h"
38 #include "event-top.h"
39 #include "parser-defs.h"
41 #include "reggroups.h"
45 #include "observable.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"
64 /* Local functions: */
66 static void until_next_command (int);
68 static void step_1 (int, int, const char *);
70 #define ERROR_NO_INFERIOR \
71 if (!target_has_execution) error (_("The program is not being run."));
73 /* Scratch area where string containing arguments to give to the
74 program will be stored by 'set args'. As soon as anything is
75 stored, notice_args_set will move it into per-inferior storage.
76 Arguments are separated by spaces. Empty string (pointer to '\0')
79 static char *inferior_args_scratch
;
81 /* Scratch area where the new cwd will be stored by 'set cwd'. */
83 static char *inferior_cwd_scratch
;
85 /* Scratch area where 'set inferior-tty' will store user-provided value.
86 We'll immediate copy it into per-inferior storage. */
88 static char *inferior_io_terminal_scratch
;
90 /* Pid of our debugged inferior, or 0 if no inferior now.
91 Since various parts of infrun.c test this to see whether there is a program
92 being debugged it should be nonzero (currently 3 is used) for remote
97 /* Nonzero if stopped due to completion of a stack dummy routine. */
99 enum stop_stack_kind stop_stack_dummy
;
101 /* Nonzero if stopped due to a random (unexpected) signal in inferior
104 int stopped_by_random_signal
;
106 /* See inferior.h. */
108 int startup_with_shell
= 1;
111 /* Accessor routines. */
113 /* Set the io terminal for the current inferior. Ownership of
114 TERMINAL_NAME is not transferred. */
117 set_inferior_io_terminal (const char *terminal_name
)
119 xfree (current_inferior ()->terminal
);
121 if (terminal_name
!= NULL
&& *terminal_name
!= '\0')
122 current_inferior ()->terminal
= xstrdup (terminal_name
);
124 current_inferior ()->terminal
= NULL
;
128 get_inferior_io_terminal (void)
130 return current_inferior ()->terminal
;
134 set_inferior_tty_command (const char *args
, int from_tty
,
135 struct cmd_list_element
*c
)
137 /* CLI has assigned the user-provided value to inferior_io_terminal_scratch.
138 Now route it to current inferior. */
139 set_inferior_io_terminal (inferior_io_terminal_scratch
);
143 show_inferior_tty_command (struct ui_file
*file
, int from_tty
,
144 struct cmd_list_element
*c
, const char *value
)
146 /* Note that we ignore the passed-in value in favor of computing it
148 const char *inferior_io_terminal
= get_inferior_io_terminal ();
150 if (inferior_io_terminal
== NULL
)
151 inferior_io_terminal
= "";
152 fprintf_filtered (gdb_stdout
,
153 _("Terminal for future runs of program being debugged "
154 "is \"%s\".\n"), inferior_io_terminal
);
158 get_inferior_args (void)
160 if (current_inferior ()->argc
!= 0)
164 n
= construct_inferior_arguments (current_inferior ()->argc
,
165 current_inferior ()->argv
);
166 set_inferior_args (n
);
170 if (current_inferior ()->args
== NULL
)
171 current_inferior ()->args
= xstrdup ("");
173 return current_inferior ()->args
;
176 /* Set the arguments for the current inferior. Ownership of
177 NEWARGS is not transferred. */
180 set_inferior_args (const char *newargs
)
182 xfree (current_inferior ()->args
);
183 current_inferior ()->args
= newargs
? xstrdup (newargs
) : NULL
;
184 current_inferior ()->argc
= 0;
185 current_inferior ()->argv
= 0;
189 set_inferior_args_vector (int argc
, char **argv
)
191 current_inferior ()->argc
= argc
;
192 current_inferior ()->argv
= argv
;
195 /* Notice when `set args' is run. */
198 set_args_command (const char *args
, int from_tty
, struct cmd_list_element
*c
)
200 /* CLI has assigned the user-provided value to inferior_args_scratch.
201 Now route it to current inferior. */
202 set_inferior_args (inferior_args_scratch
);
205 /* Notice when `show args' is run. */
208 show_args_command (struct ui_file
*file
, int from_tty
,
209 struct cmd_list_element
*c
, const char *value
)
211 /* Note that we ignore the passed-in value in favor of computing it
213 deprecated_show_value_hack (file
, from_tty
, c
, get_inferior_args ());
216 /* See common/common-inferior.h. */
219 set_inferior_cwd (const char *cwd
)
221 struct inferior
*inf
= current_inferior ();
223 gdb_assert (inf
!= NULL
);
228 inf
->cwd
.reset (xstrdup (cwd
));
231 /* See common/common-inferior.h. */
236 return current_inferior ()->cwd
.get ();
239 /* Handle the 'set cwd' command. */
242 set_cwd_command (const char *args
, int from_tty
, struct cmd_list_element
*c
)
244 if (*inferior_cwd_scratch
== '\0')
245 set_inferior_cwd (NULL
);
247 set_inferior_cwd (inferior_cwd_scratch
);
250 /* Handle the 'show cwd' command. */
253 show_cwd_command (struct ui_file
*file
, int from_tty
,
254 struct cmd_list_element
*c
, const char *value
)
256 const char *cwd
= get_inferior_cwd ();
259 fprintf_filtered (gdb_stdout
,
261 You have not set the inferior's current working directory.\n\
262 The inferior will inherit GDB's cwd if native debugging, or the remote\n\
263 server's cwd if remote debugging.\n"));
265 fprintf_filtered (gdb_stdout
,
266 _("Current working directory that will be used "
267 "when starting the inferior is \"%s\".\n"), cwd
);
271 /* Compute command-line string given argument vector. This does the
272 same shell processing as fork_inferior. */
275 construct_inferior_arguments (int argc
, char **argv
)
279 if (startup_with_shell
)
282 /* This holds all the characters considered special to the
284 static const char special
[] = "\"!&*|[]{}<>?`~^=;, \t\n";
285 static const char quote
= '"';
287 /* This holds all the characters considered special to the
288 typical Unix shells. We include `^' because the SunOS
289 /bin/sh treats it as a synonym for `|'. */
290 static const char special
[] = "\"!#$&*()\\|[]{}<>?'`~^; \t\n";
291 static const char quote
= '\'';
297 /* We over-compute the size. It shouldn't matter. */
298 for (i
= 0; i
< argc
; ++i
)
299 length
+= 3 * strlen (argv
[i
]) + 1 + 2 * (argv
[i
][0] == '\0');
301 result
= (char *) xmalloc (length
);
304 for (i
= 0; i
< argc
; ++i
)
309 /* Need to handle empty arguments specially. */
310 if (argv
[i
][0] == '\0')
320 if (strpbrk (argv
[i
], special
))
326 for (cp
= argv
[i
]; *cp
; ++cp
)
330 /* A newline cannot be quoted with a backslash (it
331 just disappears), only by putting it inside
342 if (strchr (special
, *cp
) != NULL
)
358 /* In this case we can't handle arguments that contain spaces,
359 tabs, or newlines -- see breakup_args(). */
363 for (i
= 0; i
< argc
; ++i
)
365 char *cp
= strchr (argv
[i
], ' ');
367 cp
= strchr (argv
[i
], '\t');
369 cp
= strchr (argv
[i
], '\n');
371 error (_("can't handle command-line "
372 "argument containing whitespace"));
373 length
+= strlen (argv
[i
]) + 1;
376 result
= (char *) xmalloc (length
);
378 for (i
= 0; i
< argc
; ++i
)
381 strcat (result
, " ");
382 strcat (result
, argv
[i
]);
390 /* This function strips the '&' character (indicating background
391 execution) that is added as *the last* of the arguments ARGS of a
392 command. A copy of the incoming ARGS without the '&' is returned,
393 unless the resulting string after stripping is empty, in which case
394 NULL is returned. *BG_CHAR_P is an output boolean that indicates
395 whether the '&' character was found. */
397 static gdb::unique_xmalloc_ptr
<char>
398 strip_bg_char (const char *args
, int *bg_char_p
)
402 if (args
== NULL
|| *args
== '\0')
408 p
= args
+ strlen (args
);
412 while (p
> args
&& isspace (p
[-1]))
417 return gdb::unique_xmalloc_ptr
<char>
418 (savestring (args
, p
- args
));
420 return gdb::unique_xmalloc_ptr
<char> (nullptr);
424 return gdb::unique_xmalloc_ptr
<char> (xstrdup (args
));
427 /* Common actions to take after creating any sort of inferior, by any
428 means (running, attaching, connecting, et cetera). The target
429 should be stopped. */
432 post_create_inferior (struct target_ops
*target
, int from_tty
)
435 /* Be sure we own the terminal in case write operations are performed. */
436 target_terminal::ours_for_output ();
438 /* If the target hasn't taken care of this already, do it now.
439 Targets which need to access registers during to_open,
440 to_create_inferior, or to_attach should do it earlier; but many
442 target_find_description ();
444 /* Now that we know the register layout, retrieve current PC. But
445 if the PC is unavailable (e.g., we're opening a core file with
446 missing registers info), ignore it. */
447 thread_info
*thr
= inferior_thread ();
449 thr
->suspend
.stop_pc
= 0;
452 thr
->suspend
.stop_pc
= regcache_read_pc (get_current_regcache ());
454 CATCH (ex
, RETURN_MASK_ERROR
)
456 if (ex
.error
!= NOT_AVAILABLE_ERROR
)
457 throw_exception (ex
);
463 const unsigned solib_add_generation
464 = current_program_space
->solib_add_generation
;
466 /* Create the hooks to handle shared library load and unload
468 solib_create_inferior_hook (from_tty
);
470 if (current_program_space
->solib_add_generation
== solib_add_generation
)
472 /* The platform-specific hook should load initial shared libraries,
473 but didn't. FROM_TTY will be incorrectly 0 but such solib
474 targets should be fixed anyway. Call it only after the solib
475 target has been initialized by solib_create_inferior_hook. */
478 warning (_("platform-specific solib_create_inferior_hook did "
479 "not load initial shared libraries."));
481 /* If the solist is global across processes, there's no need to
483 if (!gdbarch_has_global_solist (target_gdbarch ()))
484 solib_add (NULL
, 0, auto_solib_add
);
488 /* If the user sets watchpoints before execution having started,
489 then she gets software watchpoints, because GDB can't know which
490 target will end up being pushed, or if it supports hardware
491 watchpoints or not. breakpoint_re_set takes care of promoting
492 watchpoints to hardware watchpoints if possible, however, if this
493 new inferior doesn't load shared libraries or we don't pull in
494 symbols from any other source on this target/arch,
495 breakpoint_re_set is never called. Call it now so that software
496 watchpoints get a chance to be promoted to hardware watchpoints
497 if the now pushed target supports hardware watchpoints. */
498 breakpoint_re_set ();
500 gdb::observers::inferior_created
.notify (target
, from_tty
);
503 /* Kill the inferior if already running. This function is designed
504 to be called when we are about to start the execution of the program
505 from the beginning. Ask the user to confirm that he wants to restart
506 the program being debugged when FROM_TTY is non-null. */
509 kill_if_already_running (int from_tty
)
511 if (inferior_ptid
!= null_ptid
&& target_has_execution
)
513 /* Bail out before killing the program if we will not be able to
515 target_require_runnable ();
518 && !query (_("The program being debugged has been started already.\n\
519 Start it from the beginning? ")))
520 error (_("Program not restarted."));
525 /* See inferior.h. */
528 prepare_execution_command (struct target_ops
*target
, int background
)
530 /* If we get a request for running in the bg but the target
531 doesn't support it, error out. */
532 if (background
&& !target
->can_async_p ())
533 error (_("Asynchronous execution not supported on this target."));
537 /* If we get a request for running in the fg, then we need to
538 simulate synchronous (fg) execution. Note no cleanup is
539 necessary for this. stdin is re-enabled whenever an error
540 reaches the top level. */
541 all_uis_on_sync_execution_starting ();
545 /* Determine how the new inferior will behave. */
549 /* Run program without any explicit stop during startup. */
552 /* Stop at the beginning of the program's main function. */
555 /* Stop at the first instruction of the program. */
556 RUN_STOP_AT_FIRST_INSN
559 /* Implement the "run" command. Force a stop during program start if
560 requested by RUN_HOW. */
563 run_command_1 (const char *args
, int from_tty
, enum run_how run_how
)
565 const char *exec_file
;
566 struct ui_out
*uiout
= current_uiout
;
567 struct target_ops
*run_target
;
572 kill_if_already_running (from_tty
);
574 init_wait_for_inferior ();
575 clear_breakpoint_hit_counts ();
577 /* Clean up any leftovers from other runs. Some other things from
578 this function should probably be moved into target_pre_inferior. */
579 target_pre_inferior (from_tty
);
581 /* The comment here used to read, "The exec file is re-read every
582 time we do a generic_mourn_inferior, so we just have to worry
583 about the symbol file." The `generic_mourn_inferior' function
584 gets called whenever the program exits. However, suppose the
585 program exits, and *then* the executable file changes? We need
586 to check again here. Since reopen_exec_file doesn't do anything
587 if the timestamp hasn't changed, I don't see the harm. */
591 gdb::unique_xmalloc_ptr
<char> stripped
= strip_bg_char (args
, &async_exec
);
592 args
= stripped
.get ();
594 /* Do validation and preparation before possibly changing anything
597 run_target
= find_run_target ();
599 prepare_execution_command (run_target
, async_exec
);
601 if (non_stop
&& !run_target
->supports_non_stop ())
602 error (_("The target does not support running in non-stop mode."));
604 /* Done. Can now set breakpoints, change inferior args, etc. */
606 /* Insert temporary breakpoint in main function if requested. */
607 if (run_how
== RUN_STOP_AT_MAIN
)
608 tbreak_command (main_name (), 0);
610 exec_file
= get_exec_file (0);
612 /* We keep symbols from add-symbol-file, on the grounds that the
613 user might want to add some symbols before running the program
614 (right?). But sometimes (dynamic loading where the user manually
615 introduces the new symbols with add-symbol-file), the code which
616 the symbols describe does not persist between runs. Currently
617 the user has to manually nuke all symbols between runs if they
618 want them to go away (PR 2207). This is probably reasonable. */
620 /* If there were other args, beside '&', process them. */
622 set_inferior_args (args
);
626 uiout
->field_string (NULL
, "Starting program");
629 uiout
->field_string ("execfile", exec_file
);
631 /* We call get_inferior_args() because we might need to compute
633 uiout
->field_string ("infargs", get_inferior_args ());
638 /* We call get_inferior_args() because we might need to compute
640 run_target
->create_inferior (exec_file
,
641 std::string (get_inferior_args ()),
642 current_inferior ()->environment
.envp (),
644 /* to_create_inferior should push the target, so after this point we
645 shouldn't refer to run_target again. */
648 /* We're starting off a new process. When we get out of here, in
649 non-stop mode, finish the state of all threads of that process,
650 but leave other threads alone, as they may be stopped in internal
651 events --- the frontend shouldn't see them as stopped. In
652 all-stop, always finish the state of all threads, as we may be
653 resuming more than just the new process. */
654 ptid_t finish_ptid
= (non_stop
655 ? ptid_t (current_inferior ()->pid
)
657 scoped_finish_thread_state
finish_state (finish_ptid
);
659 /* Pass zero for FROM_TTY, because at this point the "run" command
660 has done its thing; now we are setting up the running program. */
661 post_create_inferior (current_top_target (), 0);
663 /* Queue a pending event so that the program stops immediately. */
664 if (run_how
== RUN_STOP_AT_FIRST_INSN
)
666 thread_info
*thr
= inferior_thread ();
667 thr
->suspend
.waitstatus_pending_p
= 1;
668 thr
->suspend
.waitstatus
.kind
= TARGET_WAITKIND_STOPPED
;
669 thr
->suspend
.waitstatus
.value
.sig
= GDB_SIGNAL_0
;
672 /* Start the target running. Do not use -1 continuation as it would skip
673 breakpoint right at the entry point. */
674 proceed (regcache_read_pc (get_current_regcache ()), GDB_SIGNAL_0
);
676 /* Since there was no error, there's no need to finish the thread
678 finish_state
.release ();
682 run_command (const char *args
, int from_tty
)
684 run_command_1 (args
, from_tty
, RUN_NORMAL
);
687 /* Start the execution of the program up until the beginning of the main
691 start_command (const char *args
, int from_tty
)
693 /* Some languages such as Ada need to search inside the program
694 minimal symbols for the location where to put the temporary
695 breakpoint before starting. */
696 if (!have_minimal_symbols ())
697 error (_("No symbol table loaded. Use the \"file\" command."));
699 /* Run the program until reaching the main procedure... */
700 run_command_1 (args
, from_tty
, RUN_STOP_AT_MAIN
);
703 /* Start the execution of the program stopping at the first
707 starti_command (const char *args
, int from_tty
)
709 run_command_1 (args
, from_tty
, RUN_STOP_AT_FIRST_INSN
);
713 proceed_thread_callback (struct thread_info
*thread
, void *arg
)
715 /* We go through all threads individually instead of compressing
716 into a single target `resume_all' request, because some threads
717 may be stopped in internal breakpoints/events, or stopped waiting
718 for its turn in the displaced stepping queue (that is, they are
719 running && !executing). The target side has no idea about why
720 the thread is stopped, so a `resume_all' command would resume too
721 much. If/when GDB gains a way to tell the target `hold this
722 thread stopped until I say otherwise', then we can optimize
724 if (thread
->state
!= THREAD_STOPPED
)
727 switch_to_thread (thread
);
728 clear_proceed_status (0);
729 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
);
734 ensure_valid_thread (void)
736 if (inferior_ptid
== null_ptid
737 || inferior_thread ()->state
== THREAD_EXITED
)
738 error (_("Cannot execute this command without a live selected thread."));
741 /* If the user is looking at trace frames, any resumption of execution
742 is likely to mix up recorded and live target data. So simply
743 disallow those commands. */
746 ensure_not_tfind_mode (void)
748 if (get_traceframe_number () >= 0)
749 error (_("Cannot execute this command while looking at trace frames."));
752 /* Throw an error indicating the current thread is running. */
755 error_is_running (void)
757 error (_("Cannot execute this command while "
758 "the selected thread is running."));
761 /* Calls error_is_running if the current thread is running. */
764 ensure_not_running (void)
766 if (inferior_thread ()->state
== THREAD_RUNNING
)
771 continue_1 (int all_threads
)
774 ensure_not_tfind_mode ();
776 if (non_stop
&& all_threads
)
778 /* Don't error out if the current thread is running, because
779 there may be other stopped threads. */
781 /* Backup current thread and selected frame and restore on scope
783 scoped_restore_current_thread restore_thread
;
785 iterate_over_threads (proceed_thread_callback
, NULL
);
787 if (current_ui
->prompt_state
== PROMPT_BLOCKED
)
789 /* If all threads in the target were already running,
790 proceed_thread_callback ends up never calling proceed,
791 and so nothing calls this to put the inferior's terminal
792 settings in effect and remove stdin from the event loop,
793 which we must when running a foreground command. E.g.:
797 <all threads are running now>
800 <no thread was resumed, but the inferior now owns the terminal>
802 target_terminal::inferior ();
807 ensure_valid_thread ();
808 ensure_not_running ();
809 clear_proceed_status (0);
810 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
);
814 /* continue [-a] [proceed-count] [&] */
817 continue_command (const char *args
, int from_tty
)
824 /* Find out whether we must run in the background. */
825 gdb::unique_xmalloc_ptr
<char> stripped
= strip_bg_char (args
, &async_exec
);
826 args
= stripped
.get ();
830 if (startswith (args
, "-a"))
833 args
+= sizeof ("-a") - 1;
839 if (!non_stop
&& all_threads
)
840 error (_("`-a' is meaningless in all-stop mode."));
842 if (args
!= NULL
&& all_threads
)
843 error (_("Can't resume all threads and specify "
844 "proceed count simultaneously."));
846 /* If we have an argument left, set proceed count of breakpoint we
853 struct thread_info
*tp
;
856 tp
= inferior_thread ();
860 struct target_waitstatus ws
;
862 get_last_target_status (&last_ptid
, &ws
);
863 tp
= find_thread_ptid (last_ptid
);
866 bs
= tp
->control
.stop_bpstat
;
868 while ((stat
= bpstat_num (&bs
, &num
)) != 0)
871 set_ignore_count (num
,
872 parse_and_eval_long (args
) - 1,
874 /* set_ignore_count prints a message ending with a period.
875 So print two spaces before "Continuing.". */
877 printf_filtered (" ");
881 if (!stopped
&& from_tty
)
884 ("Not stopped at any breakpoint; argument ignored.\n");
889 ensure_not_tfind_mode ();
891 if (!non_stop
|| !all_threads
)
893 ensure_valid_thread ();
894 ensure_not_running ();
897 prepare_execution_command (current_top_target (), async_exec
);
900 printf_filtered (_("Continuing.\n"));
902 continue_1 (all_threads
);
905 /* Record the starting point of a "step" or "next" command. */
908 set_step_frame (void)
910 frame_info
*frame
= get_current_frame ();
912 symtab_and_line sal
= find_frame_sal (frame
);
913 set_step_info (frame
, sal
);
915 CORE_ADDR pc
= get_frame_pc (frame
);
916 thread_info
*tp
= inferior_thread ();
917 tp
->control
.step_start_function
= find_pc_function (pc
);
920 /* Step until outside of current statement. */
923 step_command (const char *count_string
, int from_tty
)
925 step_1 (0, 0, count_string
);
928 /* Likewise, but skip over subroutine calls as if single instructions. */
931 next_command (const char *count_string
, int from_tty
)
933 step_1 (1, 0, count_string
);
936 /* Likewise, but step only one instruction. */
939 stepi_command (const char *count_string
, int from_tty
)
941 step_1 (0, 1, count_string
);
945 nexti_command (const char *count_string
, int from_tty
)
947 step_1 (1, 1, count_string
);
951 delete_longjmp_breakpoint_cleanup (void *arg
)
953 int thread
= * (int *) arg
;
954 delete_longjmp_breakpoint (thread
);
957 /* Data for the FSM that manages the step/next/stepi/nexti
960 struct step_command_fsm
962 /* The base class. */
963 struct thread_fsm thread_fsm
;
965 /* How many steps left in a "step N"-like command. */
968 /* If true, this is a next/nexti, otherwise a step/stepi. */
969 int skip_subroutines
;
971 /* If true, this is a stepi/nexti, otherwise a step/step. */
975 static void step_command_fsm_clean_up (struct thread_fsm
*self
,
976 struct thread_info
*thread
);
977 static int step_command_fsm_should_stop (struct thread_fsm
*self
,
978 struct thread_info
*thread
);
979 static enum async_reply_reason
980 step_command_fsm_async_reply_reason (struct thread_fsm
*self
);
982 /* step_command_fsm's vtable. */
984 static struct thread_fsm_ops step_command_fsm_ops
=
987 step_command_fsm_clean_up
,
988 step_command_fsm_should_stop
,
989 NULL
, /* return_value */
990 step_command_fsm_async_reply_reason
,
993 /* Allocate a new step_command_fsm. */
995 static struct step_command_fsm
*
996 new_step_command_fsm (struct interp
*cmd_interp
)
998 struct step_command_fsm
*sm
;
1000 sm
= XCNEW (struct step_command_fsm
);
1001 thread_fsm_ctor (&sm
->thread_fsm
, &step_command_fsm_ops
, cmd_interp
);
1006 /* Prepare for a step/next/etc. command. Any target resource
1007 allocated here is undone in the FSM's clean_up method. */
1010 step_command_fsm_prepare (struct step_command_fsm
*sm
,
1011 int skip_subroutines
, int single_inst
,
1012 int count
, struct thread_info
*thread
)
1014 sm
->skip_subroutines
= skip_subroutines
;
1015 sm
->single_inst
= single_inst
;
1018 /* Leave the si command alone. */
1019 if (!sm
->single_inst
|| sm
->skip_subroutines
)
1020 set_longjmp_breakpoint (thread
, get_frame_id (get_current_frame ()));
1022 thread
->control
.stepping_command
= 1;
1025 static int prepare_one_step (struct step_command_fsm
*sm
);
1028 step_1 (int skip_subroutines
, int single_inst
, const char *count_string
)
1032 struct thread_info
*thr
;
1033 struct step_command_fsm
*step_sm
;
1036 ensure_not_tfind_mode ();
1037 ensure_valid_thread ();
1038 ensure_not_running ();
1040 gdb::unique_xmalloc_ptr
<char> stripped
1041 = strip_bg_char (count_string
, &async_exec
);
1042 count_string
= stripped
.get ();
1044 prepare_execution_command (current_top_target (), async_exec
);
1046 count
= count_string
? parse_and_eval_long (count_string
) : 1;
1048 clear_proceed_status (1);
1050 /* Setup the execution command state machine to handle all the COUNT
1052 thr
= inferior_thread ();
1053 step_sm
= new_step_command_fsm (command_interp ());
1054 thr
->thread_fsm
= &step_sm
->thread_fsm
;
1056 step_command_fsm_prepare (step_sm
, skip_subroutines
,
1057 single_inst
, count
, thr
);
1059 /* Do only one step for now, before returning control to the event
1060 loop. Let the continuation figure out how many other steps we
1061 need to do, and handle them one at the time, through
1063 if (!prepare_one_step (step_sm
))
1064 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
);
1069 /* Stepped into an inline frame. Pretend that we've
1071 thread_fsm_clean_up (thr
->thread_fsm
, thr
);
1072 proceeded
= normal_stop ();
1074 inferior_event_handler (INF_EXEC_COMPLETE
, NULL
);
1075 all_uis_check_sync_execution_done ();
1079 /* Implementation of the 'should_stop' FSM method for stepping
1080 commands. Called after we are done with one step operation, to
1081 check whether we need to step again, before we print the prompt and
1082 return control to the user. If count is > 1, returns false, as we
1083 will need to keep going. */
1086 step_command_fsm_should_stop (struct thread_fsm
*self
, struct thread_info
*tp
)
1088 struct step_command_fsm
*sm
= (struct step_command_fsm
*) self
;
1090 if (tp
->control
.stop_step
)
1092 /* There are more steps to make, and we did stop due to
1093 ending a stepping range. Do another step. */
1094 if (--sm
->count
> 0)
1095 return prepare_one_step (sm
);
1097 thread_fsm_set_finished (self
);
1103 /* Implementation of the 'clean_up' FSM method for stepping commands. */
1106 step_command_fsm_clean_up (struct thread_fsm
*self
, struct thread_info
*thread
)
1108 struct step_command_fsm
*sm
= (struct step_command_fsm
*) self
;
1110 if (!sm
->single_inst
|| sm
->skip_subroutines
)
1111 delete_longjmp_breakpoint (thread
->global_num
);
1114 /* Implementation of the 'async_reply_reason' FSM method for stepping
1117 static enum async_reply_reason
1118 step_command_fsm_async_reply_reason (struct thread_fsm
*self
)
1120 return EXEC_ASYNC_END_STEPPING_RANGE
;
1123 /* Prepare for one step in "step N". The actual target resumption is
1124 done by the caller. Return true if we're done and should thus
1125 report a stop to the user. Returns false if the target needs to be
1129 prepare_one_step (struct step_command_fsm
*sm
)
1133 struct frame_info
*frame
= get_current_frame ();
1135 /* Don't assume THREAD is a valid thread id. It is set to -1 if
1136 the longjmp breakpoint was not required. Use the
1137 INFERIOR_PTID thread instead, which is the same thread when
1139 struct thread_info
*tp
= inferior_thread ();
1143 if (!sm
->single_inst
)
1147 /* Step at an inlined function behaves like "down". */
1148 if (!sm
->skip_subroutines
1149 && inline_skipped_frames (tp
))
1153 /* Pretend that we've ran. */
1154 resume_ptid
= user_visible_resume_ptid (1);
1155 set_running (resume_ptid
, 1);
1157 step_into_inline_frame (tp
);
1159 return prepare_one_step (sm
);
1162 pc
= get_frame_pc (frame
);
1163 find_pc_line_pc_range (pc
,
1164 &tp
->control
.step_range_start
,
1165 &tp
->control
.step_range_end
);
1167 tp
->control
.may_range_step
= 1;
1169 /* If we have no line info, switch to stepi mode. */
1170 if (tp
->control
.step_range_end
== 0 && step_stop_if_no_debug
)
1172 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1173 tp
->control
.may_range_step
= 0;
1175 else if (tp
->control
.step_range_end
== 0)
1179 if (find_pc_partial_function (pc
, &name
,
1180 &tp
->control
.step_range_start
,
1181 &tp
->control
.step_range_end
) == 0)
1182 error (_("Cannot find bounds of current function"));
1184 target_terminal::ours_for_output ();
1185 printf_filtered (_("Single stepping until exit from function %s,"
1186 "\nwhich has no line number information.\n"),
1192 /* Say we are stepping, but stop after one insn whatever it does. */
1193 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1194 if (!sm
->skip_subroutines
)
1196 Don't step over function calls, not even to functions lacking
1198 tp
->control
.step_over_calls
= STEP_OVER_NONE
;
1201 if (sm
->skip_subroutines
)
1202 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1208 thread_fsm_set_finished (&sm
->thread_fsm
);
1213 /* Continue program at specified address. */
1216 jump_command (const char *arg
, int from_tty
)
1218 struct gdbarch
*gdbarch
= get_current_arch ();
1225 ensure_not_tfind_mode ();
1226 ensure_valid_thread ();
1227 ensure_not_running ();
1229 /* Find out whether we must run in the background. */
1230 gdb::unique_xmalloc_ptr
<char> stripped
= strip_bg_char (arg
, &async_exec
);
1231 arg
= stripped
.get ();
1233 prepare_execution_command (current_top_target (), async_exec
);
1236 error_no_arg (_("starting address"));
1238 std::vector
<symtab_and_line
> sals
1239 = decode_line_with_last_displayed (arg
, DECODE_LINE_FUNFIRSTLINE
);
1240 if (sals
.size () != 1)
1241 error (_("Unreasonable jump request"));
1243 symtab_and_line
&sal
= sals
[0];
1245 if (sal
.symtab
== 0 && sal
.pc
== 0)
1246 error (_("No source file has been specified."));
1248 resolve_sal_pc (&sal
); /* May error out. */
1250 /* See if we are trying to jump to another function. */
1251 fn
= get_frame_function (get_current_frame ());
1252 sfn
= find_pc_function (sal
.pc
);
1253 if (fn
!= NULL
&& sfn
!= fn
)
1255 if (!query (_("Line %d is not in `%s'. Jump anyway? "), sal
.line
,
1256 SYMBOL_PRINT_NAME (fn
)))
1258 error (_("Not confirmed."));
1265 struct obj_section
*section
;
1267 fixup_symbol_section (sfn
, 0);
1268 section
= SYMBOL_OBJ_SECTION (symbol_objfile (sfn
), sfn
);
1269 if (section_is_overlay (section
)
1270 && !section_is_mapped (section
))
1272 if (!query (_("WARNING!!! Destination is in "
1273 "unmapped overlay! Jump anyway? ")))
1275 error (_("Not confirmed."));
1285 printf_filtered (_("Continuing at "));
1286 fputs_filtered (paddress (gdbarch
, addr
), gdb_stdout
);
1287 printf_filtered (".\n");
1290 clear_proceed_status (0);
1291 proceed (addr
, GDB_SIGNAL_0
);
1294 /* Continue program giving it specified signal. */
1297 signal_command (const char *signum_exp
, int from_tty
)
1299 enum gdb_signal oursig
;
1302 dont_repeat (); /* Too dangerous. */
1304 ensure_not_tfind_mode ();
1305 ensure_valid_thread ();
1306 ensure_not_running ();
1308 /* Find out whether we must run in the background. */
1309 gdb::unique_xmalloc_ptr
<char> stripped
1310 = strip_bg_char (signum_exp
, &async_exec
);
1311 signum_exp
= stripped
.get ();
1313 prepare_execution_command (current_top_target (), async_exec
);
1316 error_no_arg (_("signal number"));
1318 /* It would be even slicker to make signal names be valid expressions,
1319 (the type could be "enum $signal" or some such), then the user could
1320 assign them to convenience variables. */
1321 oursig
= gdb_signal_from_name (signum_exp
);
1323 if (oursig
== GDB_SIGNAL_UNKNOWN
)
1325 /* No, try numeric. */
1326 int num
= parse_and_eval_long (signum_exp
);
1329 oursig
= GDB_SIGNAL_0
;
1331 oursig
= gdb_signal_from_command (num
);
1334 /* Look for threads other than the current that this command ends up
1335 resuming too (due to schedlock off), and warn if they'll get a
1336 signal delivered. "signal 0" is used to suppress a previous
1337 signal, but if the current thread is no longer the one that got
1338 the signal, then the user is potentially suppressing the signal
1339 of the wrong thread. */
1342 int must_confirm
= 0;
1344 /* This indicates what will be resumed. Either a single thread,
1345 a whole process, or all threads of all processes. */
1346 ptid_t resume_ptid
= user_visible_resume_ptid (0);
1348 for (thread_info
*tp
: all_non_exited_threads (resume_ptid
))
1350 if (tp
->ptid
== inferior_ptid
)
1353 if (tp
->suspend
.stop_signal
!= GDB_SIGNAL_0
1354 && signal_pass_state (tp
->suspend
.stop_signal
))
1357 printf_unfiltered (_("Note:\n"));
1358 printf_unfiltered (_(" Thread %s previously stopped with signal %s, %s.\n"),
1359 print_thread_id (tp
),
1360 gdb_signal_to_name (tp
->suspend
.stop_signal
),
1361 gdb_signal_to_string (tp
->suspend
.stop_signal
));
1367 && !query (_("Continuing thread %s (the current thread) with specified signal will\n"
1368 "still deliver the signals noted above to their respective threads.\n"
1369 "Continue anyway? "),
1370 print_thread_id (inferior_thread ())))
1371 error (_("Not confirmed."));
1376 if (oursig
== GDB_SIGNAL_0
)
1377 printf_filtered (_("Continuing with no signal.\n"));
1379 printf_filtered (_("Continuing with signal %s.\n"),
1380 gdb_signal_to_name (oursig
));
1383 clear_proceed_status (0);
1384 proceed ((CORE_ADDR
) -1, oursig
);
1387 /* Queue a signal to be delivered to the current thread. */
1390 queue_signal_command (const char *signum_exp
, int from_tty
)
1392 enum gdb_signal oursig
;
1393 struct thread_info
*tp
;
1396 ensure_not_tfind_mode ();
1397 ensure_valid_thread ();
1398 ensure_not_running ();
1400 if (signum_exp
== NULL
)
1401 error_no_arg (_("signal number"));
1403 /* It would be even slicker to make signal names be valid expressions,
1404 (the type could be "enum $signal" or some such), then the user could
1405 assign them to convenience variables. */
1406 oursig
= gdb_signal_from_name (signum_exp
);
1408 if (oursig
== GDB_SIGNAL_UNKNOWN
)
1410 /* No, try numeric. */
1411 int num
= parse_and_eval_long (signum_exp
);
1414 oursig
= GDB_SIGNAL_0
;
1416 oursig
= gdb_signal_from_command (num
);
1419 if (oursig
!= GDB_SIGNAL_0
1420 && !signal_pass_state (oursig
))
1421 error (_("Signal handling set to not pass this signal to the program."));
1423 tp
= inferior_thread ();
1424 tp
->suspend
.stop_signal
= oursig
;
1427 /* Data for the FSM that manages the until (with no argument)
1430 struct until_next_fsm
1432 /* The base class. */
1433 struct thread_fsm thread_fsm
;
1435 /* The thread that as current when the command was executed. */
1439 static int until_next_fsm_should_stop (struct thread_fsm
*self
,
1440 struct thread_info
*thread
);
1441 static void until_next_fsm_clean_up (struct thread_fsm
*self
,
1442 struct thread_info
*thread
);
1443 static enum async_reply_reason
1444 until_next_fsm_async_reply_reason (struct thread_fsm
*self
);
1446 /* until_next_fsm's vtable. */
1448 static struct thread_fsm_ops until_next_fsm_ops
=
1451 until_next_fsm_clean_up
,
1452 until_next_fsm_should_stop
,
1453 NULL
, /* return_value */
1454 until_next_fsm_async_reply_reason
,
1457 /* Allocate a new until_next_fsm. */
1459 static struct until_next_fsm
*
1460 new_until_next_fsm (struct interp
*cmd_interp
, int thread
)
1462 struct until_next_fsm
*sm
;
1464 sm
= XCNEW (struct until_next_fsm
);
1465 thread_fsm_ctor (&sm
->thread_fsm
, &until_next_fsm_ops
, cmd_interp
);
1467 sm
->thread
= thread
;
1472 /* Implementation of the 'should_stop' FSM method for the until (with
1476 until_next_fsm_should_stop (struct thread_fsm
*self
,
1477 struct thread_info
*tp
)
1479 if (tp
->control
.stop_step
)
1480 thread_fsm_set_finished (self
);
1485 /* Implementation of the 'clean_up' FSM method for the until (with no
1489 until_next_fsm_clean_up (struct thread_fsm
*self
, struct thread_info
*thread
)
1491 delete_longjmp_breakpoint (thread
->global_num
);
1494 /* Implementation of the 'async_reply_reason' FSM method for the until
1495 (with no arg) command. */
1497 static enum async_reply_reason
1498 until_next_fsm_async_reply_reason (struct thread_fsm
*self
)
1500 return EXEC_ASYNC_END_STEPPING_RANGE
;
1503 /* Proceed until we reach a different source line with pc greater than
1504 our current one or exit the function. We skip calls in both cases.
1506 Note that eventually this command should probably be changed so
1507 that only source lines are printed out when we hit the breakpoint
1508 we set. This may involve changes to wait_for_inferior and the
1509 proceed status code. */
1512 until_next_command (int from_tty
)
1514 struct frame_info
*frame
;
1516 struct symbol
*func
;
1517 struct symtab_and_line sal
;
1518 struct thread_info
*tp
= inferior_thread ();
1519 int thread
= tp
->global_num
;
1520 struct cleanup
*old_chain
;
1521 struct until_next_fsm
*sm
;
1523 clear_proceed_status (0);
1526 frame
= get_current_frame ();
1528 /* Step until either exited from this function or greater
1529 than the current line (if in symbolic section) or pc (if
1532 pc
= get_frame_pc (frame
);
1533 func
= find_pc_function (pc
);
1537 struct bound_minimal_symbol msymbol
= lookup_minimal_symbol_by_pc (pc
);
1539 if (msymbol
.minsym
== NULL
)
1540 error (_("Execution is not within a known function."));
1542 tp
->control
.step_range_start
= BMSYMBOL_VALUE_ADDRESS (msymbol
);
1543 /* The upper-bound of step_range is exclusive. In order to make PC
1544 within the range, set the step_range_end with PC + 1. */
1545 tp
->control
.step_range_end
= pc
+ 1;
1549 sal
= find_pc_line (pc
, 0);
1551 tp
->control
.step_range_start
= BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (func
));
1552 tp
->control
.step_range_end
= sal
.end
;
1554 tp
->control
.may_range_step
= 1;
1556 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1558 set_longjmp_breakpoint (tp
, get_frame_id (frame
));
1559 old_chain
= make_cleanup (delete_longjmp_breakpoint_cleanup
, &thread
);
1561 sm
= new_until_next_fsm (command_interp (), tp
->global_num
);
1562 tp
->thread_fsm
= &sm
->thread_fsm
;
1563 discard_cleanups (old_chain
);
1565 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
);
1569 until_command (const char *arg
, int from_tty
)
1574 ensure_not_tfind_mode ();
1575 ensure_valid_thread ();
1576 ensure_not_running ();
1578 /* Find out whether we must run in the background. */
1579 gdb::unique_xmalloc_ptr
<char> stripped
= strip_bg_char (arg
, &async_exec
);
1580 arg
= stripped
.get ();
1582 prepare_execution_command (current_top_target (), async_exec
);
1585 until_break_command (arg
, from_tty
, 0);
1587 until_next_command (from_tty
);
1591 advance_command (const char *arg
, int from_tty
)
1596 ensure_not_tfind_mode ();
1597 ensure_valid_thread ();
1598 ensure_not_running ();
1601 error_no_arg (_("a location"));
1603 /* Find out whether we must run in the background. */
1604 gdb::unique_xmalloc_ptr
<char> stripped
= strip_bg_char (arg
, &async_exec
);
1605 arg
= stripped
.get ();
1607 prepare_execution_command (current_top_target (), async_exec
);
1609 until_break_command (arg
, from_tty
, 1);
1612 /* Return the value of the result of a function at the end of a 'finish'
1613 command/BP. DTOR_DATA (if not NULL) can represent inferior registers
1614 right after an inferior call has finished. */
1617 get_return_value (struct value
*function
, struct type
*value_type
)
1619 regcache
*stop_regs
= get_current_regcache ();
1620 struct gdbarch
*gdbarch
= stop_regs
->arch ();
1621 struct value
*value
;
1623 value_type
= check_typedef (value_type
);
1624 gdb_assert (TYPE_CODE (value_type
) != TYPE_CODE_VOID
);
1626 /* FIXME: 2003-09-27: When returning from a nested inferior function
1627 call, it's possible (with no help from the architecture vector)
1628 to locate and return/print a "struct return" value. This is just
1629 a more complicated case of what is already being done in the
1630 inferior function call code. In fact, when inferior function
1631 calls are made async, this will likely be made the norm. */
1633 switch (gdbarch_return_value (gdbarch
, function
, value_type
,
1636 case RETURN_VALUE_REGISTER_CONVENTION
:
1637 case RETURN_VALUE_ABI_RETURNS_ADDRESS
:
1638 case RETURN_VALUE_ABI_PRESERVES_ADDRESS
:
1639 value
= allocate_value (value_type
);
1640 gdbarch_return_value (gdbarch
, function
, value_type
, stop_regs
,
1641 value_contents_raw (value
), NULL
);
1643 case RETURN_VALUE_STRUCT_CONVENTION
:
1647 internal_error (__FILE__
, __LINE__
, _("bad switch"));
1653 /* The captured function return value/type and its position in the
1656 struct return_value_info
1658 /* The captured return value. May be NULL if we weren't able to
1659 retrieve it. See get_return_value. */
1660 struct value
*value
;
1662 /* The return type. In some cases, we'll not be able extract the
1663 return value, but we always know the type. */
1666 /* If we captured a value, this is the value history index. */
1667 int value_history_index
;
1670 /* Helper for print_return_value. */
1673 print_return_value_1 (struct ui_out
*uiout
, struct return_value_info
*rv
)
1675 if (rv
->value
!= NULL
)
1677 struct value_print_options opts
;
1680 uiout
->text ("Value returned is ");
1681 uiout
->field_fmt ("gdb-result-var", "$%d",
1682 rv
->value_history_index
);
1683 uiout
->text (" = ");
1684 get_user_print_options (&opts
);
1688 value_print (rv
->value
, &stb
, &opts
);
1689 uiout
->field_stream ("return-value", stb
);
1694 std::string type_name
= type_to_string (rv
->type
);
1695 uiout
->text ("Value returned has type: ");
1696 uiout
->field_string ("return-type", type_name
.c_str ());
1698 uiout
->text (" Cannot determine contents\n");
1702 /* Print the result of a function at the end of a 'finish' command.
1703 RV points at an object representing the captured return value/type
1704 and its position in the value history. */
1707 print_return_value (struct ui_out
*uiout
, struct return_value_info
*rv
)
1709 if (rv
->type
== NULL
1710 || TYPE_CODE (check_typedef (rv
->type
)) == TYPE_CODE_VOID
)
1715 /* print_return_value_1 can throw an exception in some
1716 circumstances. We need to catch this so that we still
1717 delete the breakpoint. */
1718 print_return_value_1 (uiout
, rv
);
1720 CATCH (ex
, RETURN_MASK_ALL
)
1722 exception_print (gdb_stdout
, ex
);
1727 /* Data for the FSM that manages the finish command. */
1729 struct finish_command_fsm
1731 /* The base class. */
1732 struct thread_fsm thread_fsm
;
1734 /* The momentary breakpoint set at the function's return address in
1736 struct breakpoint
*breakpoint
;
1738 /* The function that we're stepping out of. */
1739 struct symbol
*function
;
1741 /* If the FSM finishes successfully, this stores the function's
1743 struct return_value_info return_value
;
1746 static int finish_command_fsm_should_stop (struct thread_fsm
*self
,
1747 struct thread_info
*thread
);
1748 static void finish_command_fsm_clean_up (struct thread_fsm
*self
,
1749 struct thread_info
*thread
);
1750 static struct return_value_info
*
1751 finish_command_fsm_return_value (struct thread_fsm
*self
);
1752 static enum async_reply_reason
1753 finish_command_fsm_async_reply_reason (struct thread_fsm
*self
);
1755 /* finish_command_fsm's vtable. */
1757 static struct thread_fsm_ops finish_command_fsm_ops
=
1760 finish_command_fsm_clean_up
,
1761 finish_command_fsm_should_stop
,
1762 finish_command_fsm_return_value
,
1763 finish_command_fsm_async_reply_reason
,
1764 NULL
, /* should_notify_stop */
1767 /* Allocate a new finish_command_fsm. */
1769 static struct finish_command_fsm
*
1770 new_finish_command_fsm (struct interp
*cmd_interp
)
1772 struct finish_command_fsm
*sm
;
1774 sm
= XCNEW (struct finish_command_fsm
);
1775 thread_fsm_ctor (&sm
->thread_fsm
, &finish_command_fsm_ops
, cmd_interp
);
1780 /* Implementation of the 'should_stop' FSM method for the finish
1781 commands. Detects whether the thread stepped out of the function
1782 successfully, and if so, captures the function's return value and
1783 marks the FSM finished. */
1786 finish_command_fsm_should_stop (struct thread_fsm
*self
,
1787 struct thread_info
*tp
)
1789 struct finish_command_fsm
*f
= (struct finish_command_fsm
*) self
;
1790 struct return_value_info
*rv
= &f
->return_value
;
1792 if (f
->function
!= NULL
1793 && bpstat_find_breakpoint (tp
->control
.stop_bpstat
,
1794 f
->breakpoint
) != NULL
)
1797 thread_fsm_set_finished (self
);
1799 rv
->type
= TYPE_TARGET_TYPE (SYMBOL_TYPE (f
->function
));
1800 if (rv
->type
== NULL
)
1801 internal_error (__FILE__
, __LINE__
,
1802 _("finish_command: function has no target type"));
1804 if (TYPE_CODE (check_typedef (rv
->type
)) != TYPE_CODE_VOID
)
1808 func
= read_var_value (f
->function
, NULL
, get_current_frame ());
1809 rv
->value
= get_return_value (func
, rv
->type
);
1810 if (rv
->value
!= NULL
)
1811 rv
->value_history_index
= record_latest_value (rv
->value
);
1814 else if (tp
->control
.stop_step
)
1816 /* Finishing from an inline frame, or reverse finishing. In
1817 either case, there's no way to retrieve the return value. */
1818 thread_fsm_set_finished (self
);
1824 /* Implementation of the 'clean_up' FSM method for the finish
1828 finish_command_fsm_clean_up (struct thread_fsm
*self
,
1829 struct thread_info
*thread
)
1831 struct finish_command_fsm
*f
= (struct finish_command_fsm
*) self
;
1833 if (f
->breakpoint
!= NULL
)
1835 delete_breakpoint (f
->breakpoint
);
1836 f
->breakpoint
= NULL
;
1838 delete_longjmp_breakpoint (thread
->global_num
);
1841 /* Implementation of the 'return_value' FSM method for the finish
1844 static struct return_value_info
*
1845 finish_command_fsm_return_value (struct thread_fsm
*self
)
1847 struct finish_command_fsm
*f
= (struct finish_command_fsm
*) self
;
1849 return &f
->return_value
;
1852 /* Implementation of the 'async_reply_reason' FSM method for the
1855 static enum async_reply_reason
1856 finish_command_fsm_async_reply_reason (struct thread_fsm
*self
)
1858 if (execution_direction
== EXEC_REVERSE
)
1859 return EXEC_ASYNC_END_STEPPING_RANGE
;
1861 return EXEC_ASYNC_FUNCTION_FINISHED
;
1864 /* finish_backward -- helper function for finish_command. */
1867 finish_backward (struct finish_command_fsm
*sm
)
1869 struct symtab_and_line sal
;
1870 struct thread_info
*tp
= inferior_thread ();
1872 CORE_ADDR func_addr
;
1874 pc
= get_frame_pc (get_current_frame ());
1876 if (find_pc_partial_function (pc
, NULL
, &func_addr
, NULL
) == 0)
1877 error (_("Cannot find bounds of current function"));
1879 sal
= find_pc_line (func_addr
, 0);
1881 tp
->control
.proceed_to_finish
= 1;
1882 /* Special case: if we're sitting at the function entry point,
1883 then all we need to do is take a reverse singlestep. We
1884 don't need to set a breakpoint, and indeed it would do us
1887 Note that this can only happen at frame #0, since there's
1888 no way that a function up the stack can have a return address
1889 that's equal to its entry point. */
1893 struct frame_info
*frame
= get_selected_frame (NULL
);
1894 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
1896 /* Set a step-resume at the function's entry point. Once that's
1897 hit, we'll do one more step backwards. */
1898 symtab_and_line sr_sal
;
1900 sr_sal
.pspace
= get_frame_program_space (frame
);
1901 insert_step_resume_breakpoint_at_sal (gdbarch
,
1902 sr_sal
, null_frame_id
);
1904 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
);
1908 /* We're almost there -- we just need to back up by one more
1910 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1911 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
);
1915 /* finish_forward -- helper function for finish_command. FRAME is the
1916 frame that called the function we're about to step out of. */
1919 finish_forward (struct finish_command_fsm
*sm
, struct frame_info
*frame
)
1921 struct frame_id frame_id
= get_frame_id (frame
);
1922 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
1923 struct symtab_and_line sal
;
1924 struct thread_info
*tp
= inferior_thread ();
1926 sal
= find_pc_line (get_frame_pc (frame
), 0);
1927 sal
.pc
= get_frame_pc (frame
);
1929 sm
->breakpoint
= set_momentary_breakpoint (gdbarch
, sal
,
1930 get_stack_frame_id (frame
),
1931 bp_finish
).release ();
1933 /* set_momentary_breakpoint invalidates FRAME. */
1936 set_longjmp_breakpoint (tp
, frame_id
);
1938 /* We want to print return value, please... */
1939 tp
->control
.proceed_to_finish
= 1;
1941 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
);
1944 /* Skip frames for "finish". */
1946 static struct frame_info
*
1947 skip_finish_frames (struct frame_info
*frame
)
1949 struct frame_info
*start
;
1955 frame
= skip_tailcall_frames (frame
);
1959 frame
= skip_unwritable_frames (frame
);
1963 while (start
!= frame
);
1968 /* "finish": Set a temporary breakpoint at the place the selected
1969 frame will return to, then continue. */
1972 finish_command (const char *arg
, int from_tty
)
1974 struct frame_info
*frame
;
1976 struct finish_command_fsm
*sm
;
1977 struct thread_info
*tp
;
1980 ensure_not_tfind_mode ();
1981 ensure_valid_thread ();
1982 ensure_not_running ();
1984 /* Find out whether we must run in the background. */
1985 gdb::unique_xmalloc_ptr
<char> stripped
= strip_bg_char (arg
, &async_exec
);
1986 arg
= stripped
.get ();
1988 prepare_execution_command (current_top_target (), async_exec
);
1991 error (_("The \"finish\" command does not take any arguments."));
1993 frame
= get_prev_frame (get_selected_frame (_("No selected frame.")));
1995 error (_("\"finish\" not meaningful in the outermost frame."));
1997 clear_proceed_status (0);
1999 tp
= inferior_thread ();
2001 sm
= new_finish_command_fsm (command_interp ());
2003 tp
->thread_fsm
= &sm
->thread_fsm
;
2005 /* Finishing from an inline frame is completely different. We don't
2006 try to show the "return value" - no way to locate it. */
2007 if (get_frame_type (get_selected_frame (_("No selected frame.")))
2010 /* Claim we are stepping in the calling frame. An empty step
2011 range means that we will stop once we aren't in a function
2012 called by that frame. We don't use the magic "1" value for
2013 step_range_end, because then infrun will think this is nexti,
2014 and not step over the rest of this inlined function call. */
2015 set_step_info (frame
, {});
2016 tp
->control
.step_range_start
= get_frame_pc (frame
);
2017 tp
->control
.step_range_end
= tp
->control
.step_range_start
;
2018 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
2020 /* Print info on the selected frame, including level number but not
2024 printf_filtered (_("Run till exit from "));
2025 print_stack_frame (get_selected_frame (NULL
), 1, LOCATION
, 0);
2028 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
);
2032 /* Find the function we will return from. */
2034 sm
->function
= find_pc_function (get_frame_pc (get_selected_frame (NULL
)));
2036 /* Print info on the selected frame, including level number but not
2040 if (execution_direction
== EXEC_REVERSE
)
2041 printf_filtered (_("Run back to call of "));
2044 if (sm
->function
!= NULL
&& TYPE_NO_RETURN (sm
->function
->type
)
2045 && !query (_("warning: Function %s does not return normally.\n"
2046 "Try to finish anyway? "),
2047 SYMBOL_PRINT_NAME (sm
->function
)))
2048 error (_("Not confirmed."));
2049 printf_filtered (_("Run till exit from "));
2052 print_stack_frame (get_selected_frame (NULL
), 1, LOCATION
, 0);
2055 if (execution_direction
== EXEC_REVERSE
)
2056 finish_backward (sm
);
2059 frame
= skip_finish_frames (frame
);
2062 error (_("Cannot find the caller frame."));
2064 finish_forward (sm
, frame
);
2070 info_program_command (const char *args
, int from_tty
)
2076 if (!target_has_execution
)
2078 printf_filtered (_("The program being debugged is not being run.\n"));
2083 ptid
= inferior_ptid
;
2086 struct target_waitstatus ws
;
2088 get_last_target_status (&ptid
, &ws
);
2091 if (ptid
== null_ptid
|| ptid
== minus_one_ptid
)
2092 error (_("No selected thread."));
2094 thread_info
*tp
= find_thread_ptid (ptid
);
2096 if (tp
->state
== THREAD_EXITED
)
2097 error (_("Invalid selected thread."));
2098 else if (tp
->state
== THREAD_RUNNING
)
2099 error (_("Selected thread is running."));
2101 bs
= tp
->control
.stop_bpstat
;
2102 stat
= bpstat_num (&bs
, &num
);
2104 target_files_info ();
2105 printf_filtered (_("Program stopped at %s.\n"),
2106 paddress (target_gdbarch (), tp
->suspend
.stop_pc
));
2107 if (tp
->control
.stop_step
)
2108 printf_filtered (_("It stopped after being stepped.\n"));
2111 /* There may be several breakpoints in the same place, so this
2112 isn't as strange as it seems. */
2117 printf_filtered (_("It stopped at a breakpoint "
2118 "that has since been deleted.\n"));
2121 printf_filtered (_("It stopped at breakpoint %d.\n"), num
);
2122 stat
= bpstat_num (&bs
, &num
);
2125 else if (tp
->suspend
.stop_signal
!= GDB_SIGNAL_0
)
2127 printf_filtered (_("It stopped with signal %s, %s.\n"),
2128 gdb_signal_to_name (tp
->suspend
.stop_signal
),
2129 gdb_signal_to_string (tp
->suspend
.stop_signal
));
2134 printf_filtered (_("Type \"info stack\" or \"info "
2135 "registers\" for more information.\n"));
2140 environment_info (const char *var
, int from_tty
)
2144 const char *val
= current_inferior ()->environment
.get (var
);
2148 puts_filtered (var
);
2149 puts_filtered (" = ");
2150 puts_filtered (val
);
2151 puts_filtered ("\n");
2155 puts_filtered ("Environment variable \"");
2156 puts_filtered (var
);
2157 puts_filtered ("\" not defined.\n");
2162 char **envp
= current_inferior ()->environment
.envp ();
2164 for (int idx
= 0; envp
[idx
] != NULL
; ++idx
)
2166 puts_filtered (envp
[idx
]);
2167 puts_filtered ("\n");
2173 set_environment_command (const char *arg
, int from_tty
)
2175 const char *p
, *val
;
2179 error_no_arg (_("environment variable and value"));
2181 /* Find seperation between variable name and value. */
2182 p
= (char *) strchr (arg
, '=');
2183 val
= (char *) strchr (arg
, ' ');
2185 if (p
!= 0 && val
!= 0)
2187 /* We have both a space and an equals. If the space is before the
2188 equals, walk forward over the spaces til we see a nonspace
2189 (possibly the equals). */
2194 /* Now if the = is after the char following the spaces,
2195 take the char following the spaces. */
2199 else if (val
!= 0 && p
== 0)
2203 error_no_arg (_("environment variable to set"));
2205 if (p
== 0 || p
[1] == 0)
2209 p
= arg
+ strlen (arg
); /* So that savestring below will work. */
2213 /* Not setting variable value to null. */
2215 while (*val
== ' ' || *val
== '\t')
2219 while (p
!= arg
&& (p
[-1] == ' ' || p
[-1] == '\t'))
2222 std::string
var (arg
, p
- arg
);
2225 printf_filtered (_("Setting environment variable "
2226 "\"%s\" to null value.\n"),
2228 current_inferior ()->environment
.set (var
.c_str (), "");
2231 current_inferior ()->environment
.set (var
.c_str (), val
);
2235 unset_environment_command (const char *var
, int from_tty
)
2239 /* If there is no argument, delete all environment variables.
2240 Ask for confirmation if reading from the terminal. */
2241 if (!from_tty
|| query (_("Delete all environment variables? ")))
2242 current_inferior ()->environment
.clear ();
2245 current_inferior ()->environment
.unset (var
);
2248 /* Handle the execution path (PATH variable). */
2250 static const char path_var_name
[] = "PATH";
2253 path_info (const char *args
, int from_tty
)
2255 puts_filtered ("Executable and object file path: ");
2256 puts_filtered (current_inferior ()->environment
.get (path_var_name
));
2257 puts_filtered ("\n");
2260 /* Add zero or more directories to the front of the execution path. */
2263 path_command (const char *dirname
, int from_tty
)
2269 env
= current_inferior ()->environment
.get (path_var_name
);
2270 /* Can be null if path is not set. */
2273 exec_path
= xstrdup (env
);
2274 mod_path (dirname
, &exec_path
);
2275 current_inferior ()->environment
.set (path_var_name
, exec_path
);
2278 path_info ((char *) NULL
, from_tty
);
2283 pad_to_column (string_file
&stream
, int col
)
2285 /* At least one space must be printed to separate columns. */
2287 const int size
= stream
.size ();
2289 stream
.puts (n_spaces (col
- size
));
2292 /* Print out the register NAME with value VAL, to FILE, in the default
2296 default_print_one_register_info (struct ui_file
*file
,
2300 struct type
*regtype
= value_type (val
);
2301 int print_raw_format
;
2302 string_file format_stream
;
2305 value_column_1
= 15,
2306 /* Give enough room for "0x", 16 hex digits and two spaces in
2307 preceding column. */
2308 value_column_2
= value_column_1
+ 2 + 16 + 2,
2311 format_stream
.puts (name
);
2312 pad_to_column (format_stream
, value_column_1
);
2314 print_raw_format
= (value_entirely_available (val
)
2315 && !value_optimized_out (val
));
2317 /* If virtual format is floating, print it that way, and in raw
2319 if (TYPE_CODE (regtype
) == TYPE_CODE_FLT
2320 || TYPE_CODE (regtype
) == TYPE_CODE_DECFLOAT
)
2322 struct value_print_options opts
;
2323 const gdb_byte
*valaddr
= value_contents_for_printing (val
);
2324 enum bfd_endian byte_order
= gdbarch_byte_order (get_type_arch (regtype
));
2326 get_user_print_options (&opts
);
2330 value_embedded_offset (val
), 0,
2331 &format_stream
, 0, val
, &opts
, current_language
);
2333 if (print_raw_format
)
2335 pad_to_column (format_stream
, value_column_2
);
2336 format_stream
.puts ("(raw ");
2337 print_hex_chars (&format_stream
, valaddr
, TYPE_LENGTH (regtype
),
2339 format_stream
.putc (')');
2344 struct value_print_options opts
;
2346 /* Print the register in hex. */
2347 get_formatted_print_options (&opts
, 'x');
2350 value_embedded_offset (val
), 0,
2351 &format_stream
, 0, val
, &opts
, current_language
);
2352 /* If not a vector register, print it also according to its
2354 if (print_raw_format
&& TYPE_VECTOR (regtype
) == 0)
2356 pad_to_column (format_stream
, value_column_2
);
2357 get_user_print_options (&opts
);
2360 value_embedded_offset (val
), 0,
2361 &format_stream
, 0, val
, &opts
, current_language
);
2365 fputs_filtered (format_stream
.c_str (), file
);
2366 fprintf_filtered (file
, "\n");
2369 /* Print out the machine register regnum. If regnum is -1, print all
2370 registers (print_all == 1) or all non-float and non-vector
2371 registers (print_all == 0).
2373 For most machines, having all_registers_info() print the
2374 register(s) one per line is good enough. If a different format is
2375 required, (eg, for MIPS or Pyramid 90x, which both have lots of
2376 regs), or there is an existing convention for showing all the
2377 registers, define the architecture method PRINT_REGISTERS_INFO to
2378 provide that format. */
2381 default_print_registers_info (struct gdbarch
*gdbarch
,
2382 struct ui_file
*file
,
2383 struct frame_info
*frame
,
2384 int regnum
, int print_all
)
2387 const int numregs
= gdbarch_num_cooked_regs (gdbarch
);
2389 for (i
= 0; i
< numregs
; i
++)
2391 /* Decide between printing all regs, non-float / vector regs, or
2397 if (!gdbarch_register_reggroup_p (gdbarch
, i
, all_reggroup
))
2402 if (!gdbarch_register_reggroup_p (gdbarch
, i
, general_reggroup
))
2412 /* If the register name is empty, it is undefined for this
2413 processor, so don't display anything. */
2414 if (gdbarch_register_name (gdbarch
, i
) == NULL
2415 || *(gdbarch_register_name (gdbarch
, i
)) == '\0')
2418 default_print_one_register_info (file
,
2419 gdbarch_register_name (gdbarch
, i
),
2420 value_of_register (i
, frame
));
2425 registers_info (const char *addr_exp
, int fpregs
)
2427 struct frame_info
*frame
;
2428 struct gdbarch
*gdbarch
;
2430 if (!target_has_registers
)
2431 error (_("The program has no registers now."));
2432 frame
= get_selected_frame (NULL
);
2433 gdbarch
= get_frame_arch (frame
);
2437 gdbarch_print_registers_info (gdbarch
, gdb_stdout
,
2442 while (*addr_exp
!= '\0')
2447 /* Skip leading white space. */
2448 addr_exp
= skip_spaces (addr_exp
);
2450 /* Discard any leading ``$''. Check that there is something
2451 resembling a register following it. */
2452 if (addr_exp
[0] == '$')
2454 if (isspace ((*addr_exp
)) || (*addr_exp
) == '\0')
2455 error (_("Missing register name"));
2457 /* Find the start/end of this register name/num/group. */
2459 while ((*addr_exp
) != '\0' && !isspace ((*addr_exp
)))
2463 /* Figure out what we've found and display it. */
2465 /* A register name? */
2467 int regnum
= user_reg_map_name_to_regnum (gdbarch
, start
, end
- start
);
2471 /* User registers lie completely outside of the range of
2472 normal registers. Catch them early so that the target
2474 if (regnum
>= gdbarch_num_cooked_regs (gdbarch
))
2476 struct value
*regval
= value_of_user_reg (regnum
, frame
);
2477 const char *regname
= user_reg_map_regnum_to_name (gdbarch
,
2480 /* Print in the same fashion
2481 gdbarch_print_registers_info's default
2482 implementation prints. */
2483 default_print_one_register_info (gdb_stdout
,
2488 gdbarch_print_registers_info (gdbarch
, gdb_stdout
,
2489 frame
, regnum
, fpregs
);
2494 /* A register group? */
2496 struct reggroup
*group
;
2498 for (group
= reggroup_next (gdbarch
, NULL
);
2500 group
= reggroup_next (gdbarch
, group
))
2502 /* Don't bother with a length check. Should the user
2503 enter a short register group name, go with the first
2504 group that matches. */
2505 if (strncmp (start
, reggroup_name (group
), end
- start
) == 0)
2513 regnum
< gdbarch_num_cooked_regs (gdbarch
);
2516 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, group
))
2517 gdbarch_print_registers_info (gdbarch
,
2525 /* Nothing matched. */
2526 error (_("Invalid register `%.*s'"), (int) (end
- start
), start
);
2531 info_all_registers_command (const char *addr_exp
, int from_tty
)
2533 registers_info (addr_exp
, 1);
2537 info_registers_command (const char *addr_exp
, int from_tty
)
2539 registers_info (addr_exp
, 0);
2543 print_vector_info (struct ui_file
*file
,
2544 struct frame_info
*frame
, const char *args
)
2546 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
2548 if (gdbarch_print_vector_info_p (gdbarch
))
2549 gdbarch_print_vector_info (gdbarch
, file
, frame
, args
);
2553 int printed_something
= 0;
2555 for (regnum
= 0; regnum
< gdbarch_num_cooked_regs (gdbarch
); regnum
++)
2557 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, vector_reggroup
))
2559 printed_something
= 1;
2560 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
2563 if (!printed_something
)
2564 fprintf_filtered (file
, "No vector information\n");
2569 info_vector_command (const char *args
, int from_tty
)
2571 if (!target_has_registers
)
2572 error (_("The program has no registers now."));
2574 print_vector_info (gdb_stdout
, get_selected_frame (NULL
), args
);
2577 /* Kill the inferior process. Make us have no inferior. */
2580 kill_command (const char *arg
, int from_tty
)
2582 /* FIXME: This should not really be inferior_ptid (or target_has_execution).
2583 It should be a distinct flag that indicates that a target is active, cuz
2584 some targets don't have processes! */
2586 if (inferior_ptid
== null_ptid
)
2587 error (_("The program is not being run."));
2588 if (!query (_("Kill the program being debugged? ")))
2589 error (_("Not confirmed."));
2591 int pid
= current_inferior ()->pid
;
2592 /* Save the pid as a string before killing the inferior, since that
2593 may unpush the current target, and we need the string after. */
2594 std::string pid_str
= target_pid_to_str (ptid_t (pid
));
2595 int infnum
= current_inferior ()->num
;
2599 if (print_inferior_events
)
2600 printf_unfiltered (_("[Inferior %d (%s) killed]\n"),
2601 infnum
, pid_str
.c_str ());
2603 /* If we still have other inferiors to debug, then don't mess with
2604 with their threads. */
2605 if (!have_inferiors ())
2607 init_thread_list (); /* Destroy thread info. */
2609 /* Killing off the inferior can leave us with a core file. If
2610 so, print the state we are left in. */
2611 if (target_has_stack
)
2613 printf_filtered (_("In %s,\n"), target_longname
);
2614 print_stack_frame (get_selected_frame (NULL
), 1, SRC_AND_LOC
, 1);
2617 bfd_cache_close_all ();
2620 /* Used in `attach&' command. Proceed threads of inferior INF iff
2621 they stopped due to debugger request, and when they did, they
2622 reported a clean stop (GDB_SIGNAL_0). Do not proceed threads that
2623 have been explicitly been told to stop. */
2626 proceed_after_attach (inferior
*inf
)
2628 /* Don't error out if the current thread is running, because
2629 there may be other stopped threads. */
2631 /* Backup current thread and selected frame. */
2632 scoped_restore_current_thread restore_thread
;
2634 for (thread_info
*thread
: inf
->non_exited_threads ())
2635 if (!thread
->executing
2636 && !thread
->stop_requested
2637 && thread
->suspend
.stop_signal
== GDB_SIGNAL_0
)
2639 switch_to_thread (thread
);
2640 clear_proceed_status (0);
2641 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
);
2645 /* See inferior.h. */
2648 setup_inferior (int from_tty
)
2650 struct inferior
*inferior
;
2652 inferior
= current_inferior ();
2653 inferior
->needs_setup
= 0;
2655 /* If no exec file is yet known, try to determine it from the
2657 if (get_exec_file (0) == NULL
)
2658 exec_file_locate_attach (inferior_ptid
.pid (), 1, from_tty
);
2661 reopen_exec_file ();
2665 /* Take any necessary post-attaching actions for this platform. */
2666 target_post_attach (inferior_ptid
.pid ());
2668 post_create_inferior (current_top_target (), from_tty
);
2671 /* What to do after the first program stops after attaching. */
2672 enum attach_post_wait_mode
2674 /* Do nothing. Leaves threads as they are. */
2675 ATTACH_POST_WAIT_NOTHING
,
2677 /* Re-resume threads that are marked running. */
2678 ATTACH_POST_WAIT_RESUME
,
2680 /* Stop all threads. */
2681 ATTACH_POST_WAIT_STOP
,
2684 /* Called after we've attached to a process and we've seen it stop for
2685 the first time. If ASYNC_EXEC is true, re-resume threads that
2686 should be running. Else if ATTACH, */
2689 attach_post_wait (const char *args
, int from_tty
, enum attach_post_wait_mode mode
)
2691 struct inferior
*inferior
;
2693 inferior
= current_inferior ();
2694 inferior
->control
.stop_soon
= NO_STOP_QUIETLY
;
2696 if (inferior
->needs_setup
)
2697 setup_inferior (from_tty
);
2699 if (mode
== ATTACH_POST_WAIT_RESUME
)
2701 /* The user requested an `attach&', so be sure to leave threads
2702 that didn't get a signal running. */
2704 /* Immediatelly resume all suspended threads of this inferior,
2705 and this inferior only. This should have no effect on
2706 already running threads. If a thread has been stopped with a
2707 signal, leave it be. */
2709 proceed_after_attach (inferior
);
2712 if (inferior_thread ()->suspend
.stop_signal
== GDB_SIGNAL_0
)
2714 clear_proceed_status (0);
2715 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
);
2719 else if (mode
== ATTACH_POST_WAIT_STOP
)
2721 /* The user requested a plain `attach', so be sure to leave
2722 the inferior stopped. */
2724 /* At least the current thread is already stopped. */
2726 /* In all-stop, by definition, all threads have to be already
2727 stopped at this point. In non-stop, however, although the
2728 selected thread is stopped, others may still be executing.
2729 Be sure to explicitly stop all threads of the process. This
2730 should have no effect on already stopped threads. */
2732 target_stop (ptid_t (inferior
->pid
));
2733 else if (target_is_non_stop_p ())
2735 struct thread_info
*lowest
= inferior_thread ();
2737 stop_all_threads ();
2739 /* It's not defined which thread will report the attach
2740 stop. For consistency, always select the thread with
2741 lowest GDB number, which should be the main thread, if it
2743 for (thread_info
*thread
: current_inferior ()->non_exited_threads ())
2744 if (thread
->inf
->num
< lowest
->inf
->num
2745 || thread
->per_inf_num
< lowest
->per_inf_num
)
2748 switch_to_thread (lowest
);
2751 /* Tell the user/frontend where we're stopped. */
2753 if (deprecated_attach_hook
)
2754 deprecated_attach_hook ();
2758 struct attach_command_continuation_args
2762 enum attach_post_wait_mode mode
;
2766 attach_command_continuation (void *args
, int err
)
2768 struct attach_command_continuation_args
*a
2769 = (struct attach_command_continuation_args
*) args
;
2774 attach_post_wait (a
->args
, a
->from_tty
, a
->mode
);
2778 attach_command_continuation_free_args (void *args
)
2780 struct attach_command_continuation_args
*a
2781 = (struct attach_command_continuation_args
*) args
;
2787 /* "attach" command entry point. Takes a program started up outside
2788 of gdb and ``attaches'' to it. This stops it cold in its tracks
2789 and allows us to start debugging it. */
2792 attach_command (const char *args
, int from_tty
)
2795 struct target_ops
*attach_target
;
2796 struct inferior
*inferior
= current_inferior ();
2797 enum attach_post_wait_mode mode
;
2799 dont_repeat (); /* Not for the faint of heart */
2801 if (gdbarch_has_global_solist (target_gdbarch ()))
2802 /* Don't complain if all processes share the same symbol
2805 else if (target_has_execution
)
2807 if (query (_("A program is being debugged already. Kill it? ")))
2810 error (_("Not killed."));
2813 /* Clean up any leftovers from other runs. Some other things from
2814 this function should probably be moved into target_pre_inferior. */
2815 target_pre_inferior (from_tty
);
2817 gdb::unique_xmalloc_ptr
<char> stripped
= strip_bg_char (args
, &async_exec
);
2818 args
= stripped
.get ();
2820 attach_target
= find_attach_target ();
2822 prepare_execution_command (attach_target
, async_exec
);
2824 if (non_stop
&& !attach_target
->supports_non_stop ())
2825 error (_("Cannot attach to this target in non-stop mode"));
2827 attach_target
->attach (args
, from_tty
);
2828 /* to_attach should push the target, so after this point we
2829 shouldn't refer to attach_target again. */
2830 attach_target
= NULL
;
2832 /* Set up the "saved terminal modes" of the inferior
2833 based on what modes we are starting it with. */
2834 target_terminal::init ();
2836 /* Install inferior's terminal modes. This may look like a no-op,
2837 as we've just saved them above, however, this does more than
2838 restore terminal settings:
2840 - installs a SIGINT handler that forwards SIGINT to the inferior.
2841 Otherwise a Ctrl-C pressed just while waiting for the initial
2842 stop would end up as a spurious Quit.
2844 - removes stdin from the event loop, which we need if attaching
2845 in the foreground, otherwise on targets that report an initial
2846 stop on attach (which are most) we'd process input/commands
2847 while we're in the event loop waiting for that stop. That is,
2848 before the attach continuation runs and the command is really
2850 target_terminal::inferior ();
2852 /* Set up execution context to know that we should return from
2853 wait_for_inferior as soon as the target reports a stop. */
2854 init_wait_for_inferior ();
2855 clear_proceed_status (0);
2857 inferior
->needs_setup
= 1;
2859 if (target_is_non_stop_p ())
2861 /* If we find that the current thread isn't stopped, explicitly
2862 do so now, because we're going to install breakpoints and
2866 /* The user requested an `attach&'; stop just one thread. */
2867 target_stop (inferior_ptid
);
2869 /* The user requested an `attach', so stop all threads of this
2871 target_stop (ptid_t (inferior_ptid
.pid ()));
2874 mode
= async_exec
? ATTACH_POST_WAIT_RESUME
: ATTACH_POST_WAIT_STOP
;
2876 /* Some system don't generate traps when attaching to inferior.
2877 E.g. Mach 3 or GNU hurd. */
2878 if (!target_attach_no_wait ())
2880 struct attach_command_continuation_args
*a
;
2882 /* Careful here. See comments in inferior.h. Basically some
2883 OSes don't ignore SIGSTOPs on continue requests anymore. We
2884 need a way for handle_inferior_event to reset the stop_signal
2885 variable after an attach, and this is what
2886 STOP_QUIETLY_NO_SIGSTOP is for. */
2887 inferior
->control
.stop_soon
= STOP_QUIETLY_NO_SIGSTOP
;
2889 /* Wait for stop. */
2890 a
= XNEW (struct attach_command_continuation_args
);
2891 a
->args
= xstrdup (args
);
2892 a
->from_tty
= from_tty
;
2894 add_inferior_continuation (attach_command_continuation
, a
,
2895 attach_command_continuation_free_args
);
2897 if (!target_is_async_p ())
2898 mark_infrun_async_event_handler ();
2902 attach_post_wait (args
, from_tty
, mode
);
2905 /* We had just found out that the target was already attached to an
2906 inferior. PTID points at a thread of this new inferior, that is
2907 the most likely to be stopped right now, but not necessarily so.
2908 The new inferior is assumed to be already added to the inferior
2909 list at this point. If LEAVE_RUNNING, then leave the threads of
2910 this inferior running, except those we've explicitly seen reported
2914 notice_new_inferior (thread_info
*thr
, int leave_running
, int from_tty
)
2916 enum attach_post_wait_mode mode
2917 = leave_running
? ATTACH_POST_WAIT_RESUME
: ATTACH_POST_WAIT_NOTHING
;
2919 gdb::optional
<scoped_restore_current_thread
> restore_thread
;
2921 if (inferior_ptid
!= null_ptid
)
2922 restore_thread
.emplace ();
2924 /* Avoid reading registers -- we haven't fetched the target
2926 switch_to_thread_no_regs (thr
);
2928 /* When we "notice" a new inferior we need to do all the things we
2929 would normally do if we had just attached to it. */
2933 struct attach_command_continuation_args
*a
;
2934 struct inferior
*inferior
= current_inferior ();
2936 /* We're going to install breakpoints, and poke at memory,
2937 ensure that the inferior is stopped for a moment while we do
2939 target_stop (inferior_ptid
);
2941 inferior
->control
.stop_soon
= STOP_QUIETLY_REMOTE
;
2943 /* Wait for stop before proceeding. */
2944 a
= XNEW (struct attach_command_continuation_args
);
2945 a
->args
= xstrdup ("");
2946 a
->from_tty
= from_tty
;
2948 add_inferior_continuation (attach_command_continuation
, a
,
2949 attach_command_continuation_free_args
);
2954 attach_post_wait ("" /* args */, from_tty
, mode
);
2959 * takes a program previously attached to and detaches it.
2960 * The program resumes execution and will no longer stop
2961 * on signals, etc. We better not have left any breakpoints
2962 * in the program or it'll die when it hits one. For this
2963 * to work, it may be necessary for the process to have been
2964 * previously attached. It *might* work if the program was
2965 * started via the normal ptrace (PTRACE_TRACEME).
2969 detach_command (const char *args
, int from_tty
)
2971 dont_repeat (); /* Not for the faint of heart. */
2973 if (inferior_ptid
== null_ptid
)
2974 error (_("The program is not being run."));
2976 query_if_trace_running (from_tty
);
2978 disconnect_tracing ();
2980 target_detach (current_inferior (), from_tty
);
2982 /* The current inferior process was just detached successfully. Get
2983 rid of breakpoints that no longer make sense. Note we don't do
2984 this within target_detach because that is also used when
2985 following child forks, and in that case we will want to transfer
2986 breakpoints to the child, not delete them. */
2987 breakpoint_init_inferior (inf_exited
);
2989 /* If the solist is global across inferiors, don't clear it when we
2990 detach from a single inferior. */
2991 if (!gdbarch_has_global_solist (target_gdbarch ()))
2992 no_shared_libraries (NULL
, from_tty
);
2994 if (deprecated_detach_hook
)
2995 deprecated_detach_hook ();
2998 /* Disconnect from the current target without resuming it (leaving it
2999 waiting for a debugger).
3001 We'd better not have left any breakpoints in the program or the
3002 next debugger will get confused. Currently only supported for some
3003 remote targets, since the normal attach mechanisms don't work on
3004 stopped processes on some native platforms (e.g. GNU/Linux). */
3007 disconnect_command (const char *args
, int from_tty
)
3009 dont_repeat (); /* Not for the faint of heart. */
3010 query_if_trace_running (from_tty
);
3011 disconnect_tracing ();
3012 target_disconnect (args
, from_tty
);
3013 no_shared_libraries (NULL
, from_tty
);
3014 init_thread_list ();
3015 if (deprecated_detach_hook
)
3016 deprecated_detach_hook ();
3020 interrupt_target_1 (int all_threads
)
3025 ptid
= minus_one_ptid
;
3027 ptid
= inferior_ptid
;
3032 target_interrupt ();
3034 /* Tag the thread as having been explicitly requested to stop, so
3035 other parts of gdb know not to resume this thread automatically,
3036 if it was stopped due to an internal event. Limit this to
3037 non-stop mode, as when debugging a multi-threaded application in
3038 all-stop mode, we will only get one stop event --- it's undefined
3039 which thread will report the event. */
3041 set_stop_requested (ptid
, 1);
3045 Stop the execution of the target while running in async mode, in
3046 the background. In all-stop, stop the whole process. In non-stop
3047 mode, stop the current thread only by default, or stop all threads
3048 if the `-a' switch is used. */
3051 interrupt_command (const char *args
, int from_tty
)
3053 if (target_can_async_p ())
3055 int all_threads
= 0;
3057 dont_repeat (); /* Not for the faint of heart. */
3060 && startswith (args
, "-a"))
3063 if (!non_stop
&& all_threads
)
3064 error (_("-a is meaningless in all-stop mode."));
3066 interrupt_target_1 (all_threads
);
3070 /* See inferior.h. */
3073 default_print_float_info (struct gdbarch
*gdbarch
, struct ui_file
*file
,
3074 struct frame_info
*frame
, const char *args
)
3077 int printed_something
= 0;
3079 for (regnum
= 0; regnum
< gdbarch_num_cooked_regs (gdbarch
); regnum
++)
3081 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, float_reggroup
))
3083 printed_something
= 1;
3084 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
3087 if (!printed_something
)
3088 fprintf_filtered (file
, "No floating-point info "
3089 "available for this processor.\n");
3093 info_float_command (const char *args
, int from_tty
)
3095 struct frame_info
*frame
;
3097 if (!target_has_registers
)
3098 error (_("The program has no registers now."));
3100 frame
= get_selected_frame (NULL
);
3101 gdbarch_print_float_info (get_frame_arch (frame
), gdb_stdout
, frame
, args
);
3105 unset_command (const char *args
, int from_tty
)
3107 printf_filtered (_("\"unset\" must be followed by the "
3108 "name of an unset subcommand.\n"));
3109 help_list (unsetlist
, "unset ", all_commands
, gdb_stdout
);
3112 /* Implement `info proc' family of commands. */
3115 info_proc_cmd_1 (const char *args
, enum info_proc_what what
, int from_tty
)
3117 struct gdbarch
*gdbarch
= get_current_arch ();
3119 if (!target_info_proc (args
, what
))
3121 if (gdbarch_info_proc_p (gdbarch
))
3122 gdbarch_info_proc (gdbarch
, args
, what
);
3124 error (_("Not supported on this target."));
3128 /* Implement `info proc' when given without any futher parameters. */
3131 info_proc_cmd (const char *args
, int from_tty
)
3133 info_proc_cmd_1 (args
, IP_MINIMAL
, from_tty
);
3136 /* Implement `info proc mappings'. */
3139 info_proc_cmd_mappings (const char *args
, int from_tty
)
3141 info_proc_cmd_1 (args
, IP_MAPPINGS
, from_tty
);
3144 /* Implement `info proc stat'. */
3147 info_proc_cmd_stat (const char *args
, int from_tty
)
3149 info_proc_cmd_1 (args
, IP_STAT
, from_tty
);
3152 /* Implement `info proc status'. */
3155 info_proc_cmd_status (const char *args
, int from_tty
)
3157 info_proc_cmd_1 (args
, IP_STATUS
, from_tty
);
3160 /* Implement `info proc cwd'. */
3163 info_proc_cmd_cwd (const char *args
, int from_tty
)
3165 info_proc_cmd_1 (args
, IP_CWD
, from_tty
);
3168 /* Implement `info proc cmdline'. */
3171 info_proc_cmd_cmdline (const char *args
, int from_tty
)
3173 info_proc_cmd_1 (args
, IP_CMDLINE
, from_tty
);
3176 /* Implement `info proc exe'. */
3179 info_proc_cmd_exe (const char *args
, int from_tty
)
3181 info_proc_cmd_1 (args
, IP_EXE
, from_tty
);
3184 /* Implement `info proc files'. */
3187 info_proc_cmd_files (const char *args
, int from_tty
)
3189 info_proc_cmd_1 (args
, IP_FILES
, from_tty
);
3192 /* Implement `info proc all'. */
3195 info_proc_cmd_all (const char *args
, int from_tty
)
3197 info_proc_cmd_1 (args
, IP_ALL
, from_tty
);
3200 /* This help string is used for the run, start, and starti commands.
3201 It is defined as a macro to prevent duplication. */
3203 #define RUN_ARGS_HELP \
3204 "You may specify arguments to give it.\n\
3205 Args may include \"*\", or \"[...]\"; they are expanded using the\n\
3206 shell that will start the program (specified by the \"$SHELL\" environment\n\
3207 variable). Input and output redirection with \">\", \"<\", or \">>\"\n\
3208 are also allowed.\n\
3210 With no arguments, uses arguments last specified (with \"run\" or \n\
3211 \"set args\"). To cancel previous arguments and run with no arguments,\n\
3212 use \"set args\" without arguments.\n\
3214 To start the inferior without using a shell, use \"set startup-with-shell off\"."
3217 _initialize_infcmd (void)
3219 static struct cmd_list_element
*info_proc_cmdlist
;
3220 struct cmd_list_element
*c
= NULL
;
3221 const char *cmd_name
;
3223 /* Add the filename of the terminal connected to inferior I/O. */
3224 add_setshow_optional_filename_cmd ("inferior-tty", class_run
,
3225 &inferior_io_terminal_scratch
, _("\
3226 Set terminal for future runs of program being debugged."), _("\
3227 Show terminal for future runs of program being debugged."), _("\
3228 Usage: set inferior-tty [TTY]\n\n\
3229 If TTY is omitted, the default behavior of using the same terminal as GDB\n\
3231 set_inferior_tty_command
,
3232 show_inferior_tty_command
,
3233 &setlist
, &showlist
);
3234 cmd_name
= "inferior-tty";
3235 c
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
3236 gdb_assert (c
!= NULL
);
3237 add_alias_cmd ("tty", c
, class_alias
, 0, &cmdlist
);
3240 add_setshow_string_noescape_cmd (cmd_name
, class_run
,
3241 &inferior_args_scratch
, _("\
3242 Set argument list to give program being debugged when it is started."), _("\
3243 Show argument list to give program being debugged when it is started."), _("\
3244 Follow this command with any number of args, to be passed to the program."),
3247 &setlist
, &showlist
);
3248 c
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
3249 gdb_assert (c
!= NULL
);
3250 set_cmd_completer (c
, filename_completer
);
3253 add_setshow_string_noescape_cmd (cmd_name
, class_run
,
3254 &inferior_cwd_scratch
, _("\
3255 Set the current working directory to be used when the inferior is started.\n\
3256 Changing this setting does not have any effect on inferiors that are\n\
3259 Show the current working directory that is used when the inferior is started."),
3261 Use this command to change the current working directory that will be used\n\
3262 when the inferior is started. This setting does not affect GDB's current\n\
3263 working directory."),
3266 &setlist
, &showlist
);
3267 c
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
3268 gdb_assert (c
!= NULL
);
3269 set_cmd_completer (c
, filename_completer
);
3271 c
= add_cmd ("environment", no_class
, environment_info
, _("\
3272 The environment to give the program, or one variable's value.\n\
3273 With an argument VAR, prints the value of environment variable VAR to\n\
3274 give the program being debugged. With no arguments, prints the entire\n\
3275 environment to be given to the program."), &showlist
);
3276 set_cmd_completer (c
, noop_completer
);
3278 add_prefix_cmd ("unset", no_class
, unset_command
,
3279 _("Complement to certain \"set\" commands."),
3280 &unsetlist
, "unset ", 0, &cmdlist
);
3282 c
= add_cmd ("environment", class_run
, unset_environment_command
, _("\
3283 Cancel environment variable VAR for the program.\n\
3284 This does not affect the program until the next \"run\" command."),
3286 set_cmd_completer (c
, noop_completer
);
3288 c
= add_cmd ("environment", class_run
, set_environment_command
, _("\
3289 Set environment variable value to give the program.\n\
3290 Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\
3291 VALUES of environment variables are uninterpreted strings.\n\
3292 This does not affect the program until the next \"run\" command."),
3294 set_cmd_completer (c
, noop_completer
);
3296 c
= add_com ("path", class_files
, path_command
, _("\
3297 Add directory DIR(s) to beginning of search path for object files.\n\
3298 $cwd in the path means the current working directory.\n\
3299 This path is equivalent to the $PATH shell variable. It is a list of\n\
3300 directories, separated by colons. These directories are searched to find\n\
3301 fully linked executable files and separately compiled object files as \
3303 set_cmd_completer (c
, filename_completer
);
3305 c
= add_cmd ("paths", no_class
, path_info
, _("\
3306 Current search path for finding object files.\n\
3307 $cwd in the path means the current working directory.\n\
3308 This path is equivalent to the $PATH shell variable. It is a list of\n\
3309 directories, separated by colons. These directories are searched to find\n\
3310 fully linked executable files and separately compiled object files as \
3313 set_cmd_completer (c
, noop_completer
);
3315 add_prefix_cmd ("kill", class_run
, kill_command
,
3316 _("Kill execution of program being debugged."),
3317 &killlist
, "kill ", 0, &cmdlist
);
3319 add_com ("attach", class_run
, attach_command
, _("\
3320 Attach to a process or file outside of GDB.\n\
3321 This command attaches to another target, of the same type as your last\n\
3322 \"target\" command (\"info files\" will show your target stack).\n\
3323 The command may take as argument a process id or a device file.\n\
3324 For a process id, you must have permission to send the process a signal,\n\
3325 and it must have the same effective uid as the debugger.\n\
3326 When using \"attach\" with a process id, the debugger finds the\n\
3327 program running in the process, looking first in the current working\n\
3328 directory, or (if not found there) using the source file search path\n\
3329 (see the \"directory\" command). You can also use the \"file\" command\n\
3330 to specify the program, and to load its symbol table."));
3332 add_prefix_cmd ("detach", class_run
, detach_command
, _("\
3333 Detach a process or file previously attached.\n\
3334 If a process, it is no longer traced, and it continues its execution. If\n\
3335 you were debugging a file, the file is closed and gdb no longer accesses it."),
3336 &detachlist
, "detach ", 0, &cmdlist
);
3338 add_com ("disconnect", class_run
, disconnect_command
, _("\
3339 Disconnect from a target.\n\
3340 The target will wait for another debugger to connect. Not available for\n\
3343 c
= add_com ("signal", class_run
, signal_command
, _("\
3344 Continue program with the specified signal.\n\
3345 Usage: signal SIGNAL\n\
3346 The SIGNAL argument is processed the same as the handle command.\n\
3348 An argument of \"0\" means continue the program without sending it a signal.\n\
3349 This is useful in cases where the program stopped because of a signal,\n\
3350 and you want to resume the program while discarding the signal.\n\
3352 In a multi-threaded program the signal is delivered to, or discarded from,\n\
3353 the current thread only."));
3354 set_cmd_completer (c
, signal_completer
);
3356 c
= add_com ("queue-signal", class_run
, queue_signal_command
, _("\
3357 Queue a signal to be delivered to the current thread when it is resumed.\n\
3358 Usage: queue-signal SIGNAL\n\
3359 The SIGNAL argument is processed the same as the handle command.\n\
3360 It is an error if the handling state of SIGNAL is \"nopass\".\n\
3362 An argument of \"0\" means remove any currently queued signal from\n\
3363 the current thread. This is useful in cases where the program stopped\n\
3364 because of a signal, and you want to resume it while discarding the signal.\n\
3366 In a multi-threaded program the signal is queued with, or discarded from,\n\
3367 the current thread only."));
3368 set_cmd_completer (c
, signal_completer
);
3370 add_com ("stepi", class_run
, stepi_command
, _("\
3371 Step one instruction exactly.\n\
3373 Argument N means step N times (or till program stops for another \
3375 add_com_alias ("si", "stepi", class_alias
, 0);
3377 add_com ("nexti", class_run
, nexti_command
, _("\
3378 Step one instruction, but proceed through subroutine calls.\n\
3380 Argument N means step N times (or till program stops for another \
3382 add_com_alias ("ni", "nexti", class_alias
, 0);
3384 add_com ("finish", class_run
, finish_command
, _("\
3385 Execute until selected stack frame returns.\n\
3387 Upon return, the value returned is printed and put in the value history."));
3388 add_com_alias ("fin", "finish", class_run
, 1);
3390 add_com ("next", class_run
, next_command
, _("\
3391 Step program, proceeding through subroutine calls.\n\
3393 Unlike \"step\", if the current source line calls a subroutine,\n\
3394 this command does not enter the subroutine, but instead steps over\n\
3395 the call, in effect treating it as a single source line."));
3396 add_com_alias ("n", "next", class_run
, 1);
3398 add_com ("step", class_run
, step_command
, _("\
3399 Step program until it reaches a different source line.\n\
3401 Argument N means step N times (or till program stops for another \
3403 add_com_alias ("s", "step", class_run
, 1);
3405 c
= add_com ("until", class_run
, until_command
, _("\
3406 Execute until the program reaches a source line greater than the current\n\
3407 or a specified location (same args as break command) within the current \
3409 set_cmd_completer (c
, location_completer
);
3410 add_com_alias ("u", "until", class_run
, 1);
3412 c
= add_com ("advance", class_run
, advance_command
, _("\
3413 Continue the program up to the given location (same form as args for break \
3415 Execution will also stop upon exit from the current stack frame."));
3416 set_cmd_completer (c
, location_completer
);
3418 c
= add_com ("jump", class_run
, jump_command
, _("\
3419 Continue program being debugged at specified line or address.\n\
3420 Usage: jump LOCATION\n\
3421 Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\
3422 for an address to start at."));
3423 set_cmd_completer (c
, location_completer
);
3424 add_com_alias ("j", "jump", class_run
, 1);
3426 add_com ("continue", class_run
, continue_command
, _("\
3427 Continue program being debugged, after signal or breakpoint.\n\
3428 Usage: continue [N]\n\
3429 If proceeding from breakpoint, a number N may be used as an argument,\n\
3430 which means to set the ignore count of that breakpoint to N - 1 (so that\n\
3431 the breakpoint won't break until the Nth time it is reached).\n\
3433 If non-stop mode is enabled, continue only the current thread,\n\
3434 otherwise all the threads in the program are continued. To \n\
3435 continue all stopped threads in non-stop mode, use the -a option.\n\
3436 Specifying -a and an ignore count simultaneously is an error."));
3437 add_com_alias ("c", "cont", class_run
, 1);
3438 add_com_alias ("fg", "cont", class_run
, 1);
3440 c
= add_com ("run", class_run
, run_command
, _("\
3441 Start debugged program.\n"
3443 set_cmd_completer (c
, filename_completer
);
3444 add_com_alias ("r", "run", class_run
, 1);
3446 c
= add_com ("start", class_run
, start_command
, _("\
3447 Start the debugged program stopping at the beginning of the main procedure.\n"
3449 set_cmd_completer (c
, filename_completer
);
3451 c
= add_com ("starti", class_run
, starti_command
, _("\
3452 Start the debugged program stopping at the first instruction.\n"
3454 set_cmd_completer (c
, filename_completer
);
3456 add_com ("interrupt", class_run
, interrupt_command
,
3457 _("Interrupt the execution of the debugged program.\n\
3458 If non-stop mode is enabled, interrupt only the current thread,\n\
3459 otherwise all the threads in the program are stopped. To \n\
3460 interrupt all running threads in non-stop mode, use the -a option."));
3462 c
= add_info ("registers", info_registers_command
, _("\
3463 List of integer registers and their contents, for selected stack frame.\n\
3464 One or more register names as argument means describe the given registers.\n\
3465 One or more register group names as argument means describe the registers\n\
3466 in the named register groups."));
3467 add_info_alias ("r", "registers", 1);
3468 set_cmd_completer (c
, reg_or_group_completer
);
3470 c
= add_info ("all-registers", info_all_registers_command
, _("\
3471 List of all registers and their contents, for selected stack frame.\n\
3472 One or more register names as argument means describe the given registers.\n\
3473 One or more register group names as argument means describe the registers\n\
3474 in the named register groups."));
3475 set_cmd_completer (c
, reg_or_group_completer
);
3477 add_info ("program", info_program_command
,
3478 _("Execution status of the program."));
3480 add_info ("float", info_float_command
,
3481 _("Print the status of the floating point unit\n"));
3483 add_info ("vector", info_vector_command
,
3484 _("Print the status of the vector unit\n"));
3486 add_prefix_cmd ("proc", class_info
, info_proc_cmd
,
3488 Show additional information about a process.\n\
3489 Specify any process id, or use the program being debugged by default."),
3490 &info_proc_cmdlist
, "info proc ",
3491 1/*allow-unknown*/, &infolist
);
3493 add_cmd ("mappings", class_info
, info_proc_cmd_mappings
, _("\
3494 List memory regions mapped by the specified process."),
3495 &info_proc_cmdlist
);
3497 add_cmd ("stat", class_info
, info_proc_cmd_stat
, _("\
3498 List process info from /proc/PID/stat."),
3499 &info_proc_cmdlist
);
3501 add_cmd ("status", class_info
, info_proc_cmd_status
, _("\
3502 List process info from /proc/PID/status."),
3503 &info_proc_cmdlist
);
3505 add_cmd ("cwd", class_info
, info_proc_cmd_cwd
, _("\
3506 List current working directory of the specified process."),
3507 &info_proc_cmdlist
);
3509 add_cmd ("cmdline", class_info
, info_proc_cmd_cmdline
, _("\
3510 List command line arguments of the specified process."),
3511 &info_proc_cmdlist
);
3513 add_cmd ("exe", class_info
, info_proc_cmd_exe
, _("\
3514 List absolute filename for executable of the specified process."),
3515 &info_proc_cmdlist
);
3517 add_cmd ("files", class_info
, info_proc_cmd_files
, _("\
3518 List files opened by the specified process."),
3519 &info_proc_cmdlist
);
3521 add_cmd ("all", class_info
, info_proc_cmd_all
, _("\
3522 List all available info about the specified process."),
3523 &info_proc_cmdlist
);