1 /* Memory-access and commands for "inferior" process, for GDB.
3 Copyright (C) 1986-2018 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 /* Address at which inferior stopped. */
101 /* Nonzero if stopped due to completion of a stack dummy routine. */
103 enum stop_stack_kind stop_stack_dummy
;
105 /* Nonzero if stopped due to a random (unexpected) signal in inferior
108 int stopped_by_random_signal
;
110 /* See inferior.h. */
112 int startup_with_shell
= 1;
115 /* Accessor routines. */
117 /* Set the io terminal for the current inferior. Ownership of
118 TERMINAL_NAME is not transferred. */
121 set_inferior_io_terminal (const char *terminal_name
)
123 xfree (current_inferior ()->terminal
);
125 if (terminal_name
!= NULL
&& *terminal_name
!= '\0')
126 current_inferior ()->terminal
= xstrdup (terminal_name
);
128 current_inferior ()->terminal
= NULL
;
132 get_inferior_io_terminal (void)
134 return current_inferior ()->terminal
;
138 set_inferior_tty_command (const char *args
, int from_tty
,
139 struct cmd_list_element
*c
)
141 /* CLI has assigned the user-provided value to inferior_io_terminal_scratch.
142 Now route it to current inferior. */
143 set_inferior_io_terminal (inferior_io_terminal_scratch
);
147 show_inferior_tty_command (struct ui_file
*file
, int from_tty
,
148 struct cmd_list_element
*c
, const char *value
)
150 /* Note that we ignore the passed-in value in favor of computing it
152 const char *inferior_io_terminal
= get_inferior_io_terminal ();
154 if (inferior_io_terminal
== NULL
)
155 inferior_io_terminal
= "";
156 fprintf_filtered (gdb_stdout
,
157 _("Terminal for future runs of program being debugged "
158 "is \"%s\".\n"), inferior_io_terminal
);
162 get_inferior_args (void)
164 if (current_inferior ()->argc
!= 0)
168 n
= construct_inferior_arguments (current_inferior ()->argc
,
169 current_inferior ()->argv
);
170 set_inferior_args (n
);
174 if (current_inferior ()->args
== NULL
)
175 current_inferior ()->args
= xstrdup ("");
177 return current_inferior ()->args
;
180 /* Set the arguments for the current inferior. Ownership of
181 NEWARGS is not transferred. */
184 set_inferior_args (const char *newargs
)
186 xfree (current_inferior ()->args
);
187 current_inferior ()->args
= newargs
? xstrdup (newargs
) : NULL
;
188 current_inferior ()->argc
= 0;
189 current_inferior ()->argv
= 0;
193 set_inferior_args_vector (int argc
, char **argv
)
195 current_inferior ()->argc
= argc
;
196 current_inferior ()->argv
= argv
;
199 /* Notice when `set args' is run. */
202 set_args_command (const char *args
, int from_tty
, struct cmd_list_element
*c
)
204 /* CLI has assigned the user-provided value to inferior_args_scratch.
205 Now route it to current inferior. */
206 set_inferior_args (inferior_args_scratch
);
209 /* Notice when `show args' is run. */
212 show_args_command (struct ui_file
*file
, int from_tty
,
213 struct cmd_list_element
*c
, const char *value
)
215 /* Note that we ignore the passed-in value in favor of computing it
217 deprecated_show_value_hack (file
, from_tty
, c
, get_inferior_args ());
220 /* See common/common-inferior.h. */
223 set_inferior_cwd (const char *cwd
)
225 struct inferior
*inf
= current_inferior ();
227 gdb_assert (inf
!= NULL
);
232 inf
->cwd
.reset (xstrdup (cwd
));
235 /* See common/common-inferior.h. */
240 return current_inferior ()->cwd
.get ();
243 /* Handle the 'set cwd' command. */
246 set_cwd_command (const char *args
, int from_tty
, struct cmd_list_element
*c
)
248 if (*inferior_cwd_scratch
== '\0')
249 set_inferior_cwd (NULL
);
251 set_inferior_cwd (inferior_cwd_scratch
);
254 /* Handle the 'show cwd' command. */
257 show_cwd_command (struct ui_file
*file
, int from_tty
,
258 struct cmd_list_element
*c
, const char *value
)
260 const char *cwd
= get_inferior_cwd ();
263 fprintf_filtered (gdb_stdout
,
265 You have not set the inferior's current working directory.\n\
266 The inferior will inherit GDB's cwd if native debugging, or the remote\n\
267 server's cwd if remote debugging.\n"));
269 fprintf_filtered (gdb_stdout
,
270 _("Current working directory that will be used "
271 "when starting the inferior is \"%s\".\n"), cwd
);
275 /* Compute command-line string given argument vector. This does the
276 same shell processing as fork_inferior. */
279 construct_inferior_arguments (int argc
, char **argv
)
283 if (startup_with_shell
)
286 /* This holds all the characters considered special to the
288 static const char special
[] = "\"!&*|[]{}<>?`~^=;, \t\n";
289 static const char quote
= '"';
291 /* This holds all the characters considered special to the
292 typical Unix shells. We include `^' because the SunOS
293 /bin/sh treats it as a synonym for `|'. */
294 static const char special
[] = "\"!#$&*()\\|[]{}<>?'`~^; \t\n";
295 static const char quote
= '\'';
301 /* We over-compute the size. It shouldn't matter. */
302 for (i
= 0; i
< argc
; ++i
)
303 length
+= 3 * strlen (argv
[i
]) + 1 + 2 * (argv
[i
][0] == '\0');
305 result
= (char *) xmalloc (length
);
308 for (i
= 0; i
< argc
; ++i
)
313 /* Need to handle empty arguments specially. */
314 if (argv
[i
][0] == '\0')
324 if (strpbrk (argv
[i
], special
))
330 for (cp
= argv
[i
]; *cp
; ++cp
)
334 /* A newline cannot be quoted with a backslash (it
335 just disappears), only by putting it inside
346 if (strchr (special
, *cp
) != NULL
)
362 /* In this case we can't handle arguments that contain spaces,
363 tabs, or newlines -- see breakup_args(). */
367 for (i
= 0; i
< argc
; ++i
)
369 char *cp
= strchr (argv
[i
], ' ');
371 cp
= strchr (argv
[i
], '\t');
373 cp
= strchr (argv
[i
], '\n');
375 error (_("can't handle command-line "
376 "argument containing whitespace"));
377 length
+= strlen (argv
[i
]) + 1;
380 result
= (char *) xmalloc (length
);
382 for (i
= 0; i
< argc
; ++i
)
385 strcat (result
, " ");
386 strcat (result
, argv
[i
]);
394 /* This function strips the '&' character (indicating background
395 execution) that is added as *the last* of the arguments ARGS of a
396 command. A copy of the incoming ARGS without the '&' is returned,
397 unless the resulting string after stripping is empty, in which case
398 NULL is returned. *BG_CHAR_P is an output boolean that indicates
399 whether the '&' character was found. */
401 static gdb::unique_xmalloc_ptr
<char>
402 strip_bg_char (const char *args
, int *bg_char_p
)
406 if (args
== NULL
|| *args
== '\0')
412 p
= args
+ strlen (args
);
416 while (p
> args
&& isspace (p
[-1]))
421 return gdb::unique_xmalloc_ptr
<char>
422 (savestring (args
, p
- args
));
424 return gdb::unique_xmalloc_ptr
<char> (nullptr);
428 return gdb::unique_xmalloc_ptr
<char> (xstrdup (args
));
431 /* Common actions to take after creating any sort of inferior, by any
432 means (running, attaching, connecting, et cetera). The target
433 should be stopped. */
436 post_create_inferior (struct target_ops
*target
, int from_tty
)
439 /* Be sure we own the terminal in case write operations are performed. */
440 target_terminal::ours_for_output ();
442 /* If the target hasn't taken care of this already, do it now.
443 Targets which need to access registers during to_open,
444 to_create_inferior, or to_attach should do it earlier; but many
446 target_find_description ();
448 /* Now that we know the register layout, retrieve current PC. But
449 if the PC is unavailable (e.g., we're opening a core file with
450 missing registers info), ignore it. */
454 stop_pc
= regcache_read_pc (get_current_regcache ());
456 CATCH (ex
, RETURN_MASK_ERROR
)
458 if (ex
.error
!= NOT_AVAILABLE_ERROR
)
459 throw_exception (ex
);
465 const unsigned solib_add_generation
466 = current_program_space
->solib_add_generation
;
468 /* Create the hooks to handle shared library load and unload
470 solib_create_inferior_hook (from_tty
);
472 if (current_program_space
->solib_add_generation
== solib_add_generation
)
474 /* The platform-specific hook should load initial shared libraries,
475 but didn't. FROM_TTY will be incorrectly 0 but such solib
476 targets should be fixed anyway. Call it only after the solib
477 target has been initialized by solib_create_inferior_hook. */
480 warning (_("platform-specific solib_create_inferior_hook did "
481 "not load initial shared libraries."));
483 /* If the solist is global across processes, there's no need to
485 if (!gdbarch_has_global_solist (target_gdbarch ()))
486 solib_add (NULL
, 0, auto_solib_add
);
490 /* If the user sets watchpoints before execution having started,
491 then she gets software watchpoints, because GDB can't know which
492 target will end up being pushed, or if it supports hardware
493 watchpoints or not. breakpoint_re_set takes care of promoting
494 watchpoints to hardware watchpoints if possible, however, if this
495 new inferior doesn't load shared libraries or we don't pull in
496 symbols from any other source on this target/arch,
497 breakpoint_re_set is never called. Call it now so that software
498 watchpoints get a chance to be promoted to hardware watchpoints
499 if the now pushed target supports hardware watchpoints. */
500 breakpoint_re_set ();
502 gdb::observers::inferior_created
.notify (target
, from_tty
);
505 /* Kill the inferior if already running. This function is designed
506 to be called when we are about to start the execution of the program
507 from the beginning. Ask the user to confirm that he wants to restart
508 the program being debugged when FROM_TTY is non-null. */
511 kill_if_already_running (int from_tty
)
513 if (! ptid_equal (inferior_ptid
, null_ptid
) && target_has_execution
)
515 /* Bail out before killing the program if we will not be able to
517 target_require_runnable ();
520 && !query (_("The program being debugged has been started already.\n\
521 Start it from the beginning? ")))
522 error (_("Program not restarted."));
527 /* See inferior.h. */
530 prepare_execution_command (struct target_ops
*target
, int background
)
532 /* If we get a request for running in the bg but the target
533 doesn't support it, error out. */
534 if (background
&& !target
->to_can_async_p (target
))
535 error (_("Asynchronous execution not supported on this target."));
539 /* If we get a request for running in the fg, then we need to
540 simulate synchronous (fg) execution. Note no cleanup is
541 necessary for this. stdin is re-enabled whenever an error
542 reaches the top level. */
543 all_uis_on_sync_execution_starting ();
547 /* Determine how the new inferior will behave. */
551 /* Run program without any explicit stop during startup. */
554 /* Stop at the beginning of the program's main function. */
557 /* Stop at the first instruction of the program. */
558 RUN_STOP_AT_FIRST_INSN
561 /* Implement the "run" command. Force a stop during program start if
562 requested by RUN_HOW. */
565 run_command_1 (const char *args
, int from_tty
, enum run_how run_how
)
567 const char *exec_file
;
568 struct cleanup
*old_chain
;
570 struct ui_out
*uiout
= current_uiout
;
571 struct target_ops
*run_target
;
576 kill_if_already_running (from_tty
);
578 init_wait_for_inferior ();
579 clear_breakpoint_hit_counts ();
581 /* Clean up any leftovers from other runs. Some other things from
582 this function should probably be moved into target_pre_inferior. */
583 target_pre_inferior (from_tty
);
585 /* The comment here used to read, "The exec file is re-read every
586 time we do a generic_mourn_inferior, so we just have to worry
587 about the symbol file." The `generic_mourn_inferior' function
588 gets called whenever the program exits. However, suppose the
589 program exits, and *then* the executable file changes? We need
590 to check again here. Since reopen_exec_file doesn't do anything
591 if the timestamp hasn't changed, I don't see the harm. */
595 gdb::unique_xmalloc_ptr
<char> stripped
= strip_bg_char (args
, &async_exec
);
596 args
= stripped
.get ();
598 /* Do validation and preparation before possibly changing anything
601 run_target
= find_run_target ();
603 prepare_execution_command (run_target
, async_exec
);
605 if (non_stop
&& !run_target
->to_supports_non_stop (run_target
))
606 error (_("The target does not support running in non-stop mode."));
608 /* Done. Can now set breakpoints, change inferior args, etc. */
610 /* Insert temporary breakpoint in main function if requested. */
611 if (run_how
== RUN_STOP_AT_MAIN
)
612 tbreak_command (main_name (), 0);
614 exec_file
= get_exec_file (0);
616 /* We keep symbols from add-symbol-file, on the grounds that the
617 user might want to add some symbols before running the program
618 (right?). But sometimes (dynamic loading where the user manually
619 introduces the new symbols with add-symbol-file), the code which
620 the symbols describe does not persist between runs. Currently
621 the user has to manually nuke all symbols between runs if they
622 want them to go away (PR 2207). This is probably reasonable. */
624 /* If there were other args, beside '&', process them. */
626 set_inferior_args (args
);
630 uiout
->field_string (NULL
, "Starting program");
633 uiout
->field_string ("execfile", exec_file
);
635 /* We call get_inferior_args() because we might need to compute
637 uiout
->field_string ("infargs", get_inferior_args ());
642 /* We call get_inferior_args() because we might need to compute
644 run_target
->to_create_inferior (run_target
, exec_file
,
645 std::string (get_inferior_args ()),
646 current_inferior ()->environment
.envp (),
648 /* to_create_inferior should push the target, so after this point we
649 shouldn't refer to run_target again. */
652 /* We're starting off a new process. When we get out of here, in
653 non-stop mode, finish the state of all threads of that process,
654 but leave other threads alone, as they may be stopped in internal
655 events --- the frontend shouldn't see them as stopped. In
656 all-stop, always finish the state of all threads, as we may be
657 resuming more than just the new process. */
659 ptid
= pid_to_ptid (ptid_get_pid (inferior_ptid
));
661 ptid
= minus_one_ptid
;
662 old_chain
= make_cleanup (finish_thread_state_cleanup
, &ptid
);
664 /* Pass zero for FROM_TTY, because at this point the "run" command
665 has done its thing; now we are setting up the running program. */
666 post_create_inferior (¤t_target
, 0);
668 /* Queue a pending event so that the program stops immediately. */
669 if (run_how
== RUN_STOP_AT_FIRST_INSN
)
671 thread_info
*thr
= inferior_thread ();
672 thr
->suspend
.waitstatus_pending_p
= 1;
673 thr
->suspend
.waitstatus
.kind
= TARGET_WAITKIND_STOPPED
;
674 thr
->suspend
.waitstatus
.value
.sig
= GDB_SIGNAL_0
;
677 /* Start the target running. Do not use -1 continuation as it would skip
678 breakpoint right at the entry point. */
679 proceed (regcache_read_pc (get_current_regcache ()), GDB_SIGNAL_0
);
681 /* Since there was no error, there's no need to finish the thread
683 discard_cleanups (old_chain
);
687 run_command (const char *args
, int from_tty
)
689 run_command_1 (args
, from_tty
, RUN_NORMAL
);
692 /* Start the execution of the program up until the beginning of the main
696 start_command (const char *args
, int from_tty
)
698 /* Some languages such as Ada need to search inside the program
699 minimal symbols for the location where to put the temporary
700 breakpoint before starting. */
701 if (!have_minimal_symbols ())
702 error (_("No symbol table loaded. Use the \"file\" command."));
704 /* Run the program until reaching the main procedure... */
705 run_command_1 (args
, from_tty
, RUN_STOP_AT_MAIN
);
708 /* Start the execution of the program stopping at the first
712 starti_command (const char *args
, int from_tty
)
714 run_command_1 (args
, from_tty
, RUN_STOP_AT_FIRST_INSN
);
718 proceed_thread_callback (struct thread_info
*thread
, void *arg
)
720 /* We go through all threads individually instead of compressing
721 into a single target `resume_all' request, because some threads
722 may be stopped in internal breakpoints/events, or stopped waiting
723 for its turn in the displaced stepping queue (that is, they are
724 running && !executing). The target side has no idea about why
725 the thread is stopped, so a `resume_all' command would resume too
726 much. If/when GDB gains a way to tell the target `hold this
727 thread stopped until I say otherwise', then we can optimize
729 if (!is_stopped (thread
->ptid
))
732 switch_to_thread (thread
->ptid
);
733 clear_proceed_status (0);
734 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
);
739 ensure_valid_thread (void)
741 if (ptid_equal (inferior_ptid
, null_ptid
)
742 || is_exited (inferior_ptid
))
743 error (_("Cannot execute this command without a live selected thread."));
746 /* If the user is looking at trace frames, any resumption of execution
747 is likely to mix up recorded and live target data. So simply
748 disallow those commands. */
751 ensure_not_tfind_mode (void)
753 if (get_traceframe_number () >= 0)
754 error (_("Cannot execute this command while looking at trace frames."));
757 /* Throw an error indicating the current thread is running. */
760 error_is_running (void)
762 error (_("Cannot execute this command while "
763 "the selected thread is running."));
766 /* Calls error_is_running if the current thread is running. */
769 ensure_not_running (void)
771 if (is_running (inferior_ptid
))
776 continue_1 (int all_threads
)
779 ensure_not_tfind_mode ();
781 if (non_stop
&& all_threads
)
783 /* Don't error out if the current thread is running, because
784 there may be other stopped threads. */
786 /* Backup current thread and selected frame and restore on scope
788 scoped_restore_current_thread restore_thread
;
790 iterate_over_threads (proceed_thread_callback
, NULL
);
792 if (current_ui
->prompt_state
== PROMPT_BLOCKED
)
794 /* If all threads in the target were already running,
795 proceed_thread_callback ends up never calling proceed,
796 and so nothing calls this to put the inferior's terminal
797 settings in effect and remove stdin from the event loop,
798 which we must when running a foreground command. E.g.:
802 <all threads are running now>
805 <no thread was resumed, but the inferior now owns the terminal>
807 target_terminal::inferior ();
812 ensure_valid_thread ();
813 ensure_not_running ();
814 clear_proceed_status (0);
815 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
);
819 /* continue [-a] [proceed-count] [&] */
822 continue_command (const char *args
, int from_tty
)
829 /* Find out whether we must run in the background. */
830 gdb::unique_xmalloc_ptr
<char> stripped
= strip_bg_char (args
, &async_exec
);
831 args
= stripped
.get ();
835 if (startswith (args
, "-a"))
838 args
+= sizeof ("-a") - 1;
844 if (!non_stop
&& all_threads
)
845 error (_("`-a' is meaningless in all-stop mode."));
847 if (args
!= NULL
&& all_threads
)
848 error (_("Can't resume all threads and specify "
849 "proceed count simultaneously."));
851 /* If we have an argument left, set proceed count of breakpoint we
858 struct thread_info
*tp
;
861 tp
= find_thread_ptid (inferior_ptid
);
865 struct target_waitstatus ws
;
867 get_last_target_status (&last_ptid
, &ws
);
868 tp
= find_thread_ptid (last_ptid
);
871 bs
= tp
->control
.stop_bpstat
;
873 while ((stat
= bpstat_num (&bs
, &num
)) != 0)
876 set_ignore_count (num
,
877 parse_and_eval_long (args
) - 1,
879 /* set_ignore_count prints a message ending with a period.
880 So print two spaces before "Continuing.". */
882 printf_filtered (" ");
886 if (!stopped
&& from_tty
)
889 ("Not stopped at any breakpoint; argument ignored.\n");
894 ensure_not_tfind_mode ();
896 if (!non_stop
|| !all_threads
)
898 ensure_valid_thread ();
899 ensure_not_running ();
902 prepare_execution_command (¤t_target
, async_exec
);
905 printf_filtered (_("Continuing.\n"));
907 continue_1 (all_threads
);
910 /* Record the starting point of a "step" or "next" command. */
913 set_step_frame (void)
915 frame_info
*frame
= get_current_frame ();
917 symtab_and_line sal
= find_frame_sal (frame
);
918 set_step_info (frame
, sal
);
920 CORE_ADDR pc
= get_frame_pc (frame
);
921 thread_info
*tp
= inferior_thread ();
922 tp
->control
.step_start_function
= find_pc_function (pc
);
925 /* Step until outside of current statement. */
928 step_command (const char *count_string
, int from_tty
)
930 step_1 (0, 0, count_string
);
933 /* Likewise, but skip over subroutine calls as if single instructions. */
936 next_command (const char *count_string
, int from_tty
)
938 step_1 (1, 0, count_string
);
941 /* Likewise, but step only one instruction. */
944 stepi_command (const char *count_string
, int from_tty
)
946 step_1 (0, 1, count_string
);
950 nexti_command (const char *count_string
, int from_tty
)
952 step_1 (1, 1, count_string
);
956 delete_longjmp_breakpoint_cleanup (void *arg
)
958 int thread
= * (int *) arg
;
959 delete_longjmp_breakpoint (thread
);
962 /* Data for the FSM that manages the step/next/stepi/nexti
965 struct step_command_fsm
967 /* The base class. */
968 struct thread_fsm thread_fsm
;
970 /* How many steps left in a "step N"-like command. */
973 /* If true, this is a next/nexti, otherwise a step/stepi. */
974 int skip_subroutines
;
976 /* If true, this is a stepi/nexti, otherwise a step/step. */
980 static void step_command_fsm_clean_up (struct thread_fsm
*self
,
981 struct thread_info
*thread
);
982 static int step_command_fsm_should_stop (struct thread_fsm
*self
,
983 struct thread_info
*thread
);
984 static enum async_reply_reason
985 step_command_fsm_async_reply_reason (struct thread_fsm
*self
);
987 /* step_command_fsm's vtable. */
989 static struct thread_fsm_ops step_command_fsm_ops
=
992 step_command_fsm_clean_up
,
993 step_command_fsm_should_stop
,
994 NULL
, /* return_value */
995 step_command_fsm_async_reply_reason
,
998 /* Allocate a new step_command_fsm. */
1000 static struct step_command_fsm
*
1001 new_step_command_fsm (struct interp
*cmd_interp
)
1003 struct step_command_fsm
*sm
;
1005 sm
= XCNEW (struct step_command_fsm
);
1006 thread_fsm_ctor (&sm
->thread_fsm
, &step_command_fsm_ops
, cmd_interp
);
1011 /* Prepare for a step/next/etc. command. Any target resource
1012 allocated here is undone in the FSM's clean_up method. */
1015 step_command_fsm_prepare (struct step_command_fsm
*sm
,
1016 int skip_subroutines
, int single_inst
,
1017 int count
, struct thread_info
*thread
)
1019 sm
->skip_subroutines
= skip_subroutines
;
1020 sm
->single_inst
= single_inst
;
1023 /* Leave the si command alone. */
1024 if (!sm
->single_inst
|| sm
->skip_subroutines
)
1025 set_longjmp_breakpoint (thread
, get_frame_id (get_current_frame ()));
1027 thread
->control
.stepping_command
= 1;
1030 static int prepare_one_step (struct step_command_fsm
*sm
);
1033 step_1 (int skip_subroutines
, int single_inst
, const char *count_string
)
1037 struct thread_info
*thr
;
1038 struct step_command_fsm
*step_sm
;
1041 ensure_not_tfind_mode ();
1042 ensure_valid_thread ();
1043 ensure_not_running ();
1045 gdb::unique_xmalloc_ptr
<char> stripped
1046 = strip_bg_char (count_string
, &async_exec
);
1047 count_string
= stripped
.get ();
1049 prepare_execution_command (¤t_target
, async_exec
);
1051 count
= count_string
? parse_and_eval_long (count_string
) : 1;
1053 clear_proceed_status (1);
1055 /* Setup the execution command state machine to handle all the COUNT
1057 thr
= inferior_thread ();
1058 step_sm
= new_step_command_fsm (command_interp ());
1059 thr
->thread_fsm
= &step_sm
->thread_fsm
;
1061 step_command_fsm_prepare (step_sm
, skip_subroutines
,
1062 single_inst
, count
, thr
);
1064 /* Do only one step for now, before returning control to the event
1065 loop. Let the continuation figure out how many other steps we
1066 need to do, and handle them one at the time, through
1068 if (!prepare_one_step (step_sm
))
1069 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
);
1074 /* Stepped into an inline frame. Pretend that we've
1076 thread_fsm_clean_up (thr
->thread_fsm
, thr
);
1077 proceeded
= normal_stop ();
1079 inferior_event_handler (INF_EXEC_COMPLETE
, NULL
);
1080 all_uis_check_sync_execution_done ();
1084 /* Implementation of the 'should_stop' FSM method for stepping
1085 commands. Called after we are done with one step operation, to
1086 check whether we need to step again, before we print the prompt and
1087 return control to the user. If count is > 1, returns false, as we
1088 will need to keep going. */
1091 step_command_fsm_should_stop (struct thread_fsm
*self
, struct thread_info
*tp
)
1093 struct step_command_fsm
*sm
= (struct step_command_fsm
*) self
;
1095 if (tp
->control
.stop_step
)
1097 /* There are more steps to make, and we did stop due to
1098 ending a stepping range. Do another step. */
1099 if (--sm
->count
> 0)
1100 return prepare_one_step (sm
);
1102 thread_fsm_set_finished (self
);
1108 /* Implementation of the 'clean_up' FSM method for stepping commands. */
1111 step_command_fsm_clean_up (struct thread_fsm
*self
, struct thread_info
*thread
)
1113 struct step_command_fsm
*sm
= (struct step_command_fsm
*) self
;
1115 if (!sm
->single_inst
|| sm
->skip_subroutines
)
1116 delete_longjmp_breakpoint (thread
->global_num
);
1119 /* Implementation of the 'async_reply_reason' FSM method for stepping
1122 static enum async_reply_reason
1123 step_command_fsm_async_reply_reason (struct thread_fsm
*self
)
1125 return EXEC_ASYNC_END_STEPPING_RANGE
;
1128 /* Prepare for one step in "step N". The actual target resumption is
1129 done by the caller. Return true if we're done and should thus
1130 report a stop to the user. Returns false if the target needs to be
1134 prepare_one_step (struct step_command_fsm
*sm
)
1138 struct frame_info
*frame
= get_current_frame ();
1140 /* Don't assume THREAD is a valid thread id. It is set to -1 if
1141 the longjmp breakpoint was not required. Use the
1142 INFERIOR_PTID thread instead, which is the same thread when
1144 struct thread_info
*tp
= inferior_thread ();
1148 if (!sm
->single_inst
)
1152 /* Step at an inlined function behaves like "down". */
1153 if (!sm
->skip_subroutines
1154 && inline_skipped_frames (inferior_ptid
))
1158 /* Pretend that we've ran. */
1159 resume_ptid
= user_visible_resume_ptid (1);
1160 set_running (resume_ptid
, 1);
1162 step_into_inline_frame (inferior_ptid
);
1164 return prepare_one_step (sm
);
1167 pc
= get_frame_pc (frame
);
1168 find_pc_line_pc_range (pc
,
1169 &tp
->control
.step_range_start
,
1170 &tp
->control
.step_range_end
);
1172 tp
->control
.may_range_step
= 1;
1174 /* If we have no line info, switch to stepi mode. */
1175 if (tp
->control
.step_range_end
== 0 && step_stop_if_no_debug
)
1177 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1178 tp
->control
.may_range_step
= 0;
1180 else if (tp
->control
.step_range_end
== 0)
1184 if (find_pc_partial_function (pc
, &name
,
1185 &tp
->control
.step_range_start
,
1186 &tp
->control
.step_range_end
) == 0)
1187 error (_("Cannot find bounds of current function"));
1189 target_terminal::ours_for_output ();
1190 printf_filtered (_("Single stepping until exit from function %s,"
1191 "\nwhich has no line number information.\n"),
1197 /* Say we are stepping, but stop after one insn whatever it does. */
1198 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1199 if (!sm
->skip_subroutines
)
1201 Don't step over function calls, not even to functions lacking
1203 tp
->control
.step_over_calls
= STEP_OVER_NONE
;
1206 if (sm
->skip_subroutines
)
1207 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1213 thread_fsm_set_finished (&sm
->thread_fsm
);
1218 /* Continue program at specified address. */
1221 jump_command (const char *arg
, int from_tty
)
1223 struct gdbarch
*gdbarch
= get_current_arch ();
1230 ensure_not_tfind_mode ();
1231 ensure_valid_thread ();
1232 ensure_not_running ();
1234 /* Find out whether we must run in the background. */
1235 gdb::unique_xmalloc_ptr
<char> stripped
= strip_bg_char (arg
, &async_exec
);
1236 arg
= stripped
.get ();
1238 prepare_execution_command (¤t_target
, async_exec
);
1241 error_no_arg (_("starting address"));
1243 std::vector
<symtab_and_line
> sals
1244 = decode_line_with_last_displayed (arg
, DECODE_LINE_FUNFIRSTLINE
);
1245 if (sals
.size () != 1)
1246 error (_("Unreasonable jump request"));
1248 symtab_and_line
&sal
= sals
[0];
1250 if (sal
.symtab
== 0 && sal
.pc
== 0)
1251 error (_("No source file has been specified."));
1253 resolve_sal_pc (&sal
); /* May error out. */
1255 /* See if we are trying to jump to another function. */
1256 fn
= get_frame_function (get_current_frame ());
1257 sfn
= find_pc_function (sal
.pc
);
1258 if (fn
!= NULL
&& sfn
!= fn
)
1260 if (!query (_("Line %d is not in `%s'. Jump anyway? "), sal
.line
,
1261 SYMBOL_PRINT_NAME (fn
)))
1263 error (_("Not confirmed."));
1270 struct obj_section
*section
;
1272 fixup_symbol_section (sfn
, 0);
1273 section
= SYMBOL_OBJ_SECTION (symbol_objfile (sfn
), sfn
);
1274 if (section_is_overlay (section
)
1275 && !section_is_mapped (section
))
1277 if (!query (_("WARNING!!! Destination is in "
1278 "unmapped overlay! Jump anyway? ")))
1280 error (_("Not confirmed."));
1290 printf_filtered (_("Continuing at "));
1291 fputs_filtered (paddress (gdbarch
, addr
), gdb_stdout
);
1292 printf_filtered (".\n");
1295 clear_proceed_status (0);
1296 proceed (addr
, GDB_SIGNAL_0
);
1299 /* Continue program giving it specified signal. */
1302 signal_command (const char *signum_exp
, int from_tty
)
1304 enum gdb_signal oursig
;
1307 dont_repeat (); /* Too dangerous. */
1309 ensure_not_tfind_mode ();
1310 ensure_valid_thread ();
1311 ensure_not_running ();
1313 /* Find out whether we must run in the background. */
1314 gdb::unique_xmalloc_ptr
<char> stripped
1315 = strip_bg_char (signum_exp
, &async_exec
);
1316 signum_exp
= stripped
.get ();
1318 prepare_execution_command (¤t_target
, async_exec
);
1321 error_no_arg (_("signal number"));
1323 /* It would be even slicker to make signal names be valid expressions,
1324 (the type could be "enum $signal" or some such), then the user could
1325 assign them to convenience variables. */
1326 oursig
= gdb_signal_from_name (signum_exp
);
1328 if (oursig
== GDB_SIGNAL_UNKNOWN
)
1330 /* No, try numeric. */
1331 int num
= parse_and_eval_long (signum_exp
);
1334 oursig
= GDB_SIGNAL_0
;
1336 oursig
= gdb_signal_from_command (num
);
1339 /* Look for threads other than the current that this command ends up
1340 resuming too (due to schedlock off), and warn if they'll get a
1341 signal delivered. "signal 0" is used to suppress a previous
1342 signal, but if the current thread is no longer the one that got
1343 the signal, then the user is potentially suppressing the signal
1344 of the wrong thread. */
1347 struct thread_info
*tp
;
1349 int must_confirm
= 0;
1351 /* This indicates what will be resumed. Either a single thread,
1352 a whole process, or all threads of all processes. */
1353 resume_ptid
= user_visible_resume_ptid (0);
1355 ALL_NON_EXITED_THREADS (tp
)
1357 if (ptid_equal (tp
->ptid
, inferior_ptid
))
1359 if (!ptid_match (tp
->ptid
, resume_ptid
))
1362 if (tp
->suspend
.stop_signal
!= GDB_SIGNAL_0
1363 && signal_pass_state (tp
->suspend
.stop_signal
))
1366 printf_unfiltered (_("Note:\n"));
1367 printf_unfiltered (_(" Thread %s previously stopped with signal %s, %s.\n"),
1368 print_thread_id (tp
),
1369 gdb_signal_to_name (tp
->suspend
.stop_signal
),
1370 gdb_signal_to_string (tp
->suspend
.stop_signal
));
1376 && !query (_("Continuing thread %s (the current thread) with specified signal will\n"
1377 "still deliver the signals noted above to their respective threads.\n"
1378 "Continue anyway? "),
1379 print_thread_id (inferior_thread ())))
1380 error (_("Not confirmed."));
1385 if (oursig
== GDB_SIGNAL_0
)
1386 printf_filtered (_("Continuing with no signal.\n"));
1388 printf_filtered (_("Continuing with signal %s.\n"),
1389 gdb_signal_to_name (oursig
));
1392 clear_proceed_status (0);
1393 proceed ((CORE_ADDR
) -1, oursig
);
1396 /* Queue a signal to be delivered to the current thread. */
1399 queue_signal_command (const char *signum_exp
, int from_tty
)
1401 enum gdb_signal oursig
;
1402 struct thread_info
*tp
;
1405 ensure_not_tfind_mode ();
1406 ensure_valid_thread ();
1407 ensure_not_running ();
1409 if (signum_exp
== NULL
)
1410 error_no_arg (_("signal number"));
1412 /* It would be even slicker to make signal names be valid expressions,
1413 (the type could be "enum $signal" or some such), then the user could
1414 assign them to convenience variables. */
1415 oursig
= gdb_signal_from_name (signum_exp
);
1417 if (oursig
== GDB_SIGNAL_UNKNOWN
)
1419 /* No, try numeric. */
1420 int num
= parse_and_eval_long (signum_exp
);
1423 oursig
= GDB_SIGNAL_0
;
1425 oursig
= gdb_signal_from_command (num
);
1428 if (oursig
!= GDB_SIGNAL_0
1429 && !signal_pass_state (oursig
))
1430 error (_("Signal handling set to not pass this signal to the program."));
1432 tp
= inferior_thread ();
1433 tp
->suspend
.stop_signal
= oursig
;
1436 /* Data for the FSM that manages the until (with no argument)
1439 struct until_next_fsm
1441 /* The base class. */
1442 struct thread_fsm thread_fsm
;
1444 /* The thread that as current when the command was executed. */
1448 static int until_next_fsm_should_stop (struct thread_fsm
*self
,
1449 struct thread_info
*thread
);
1450 static void until_next_fsm_clean_up (struct thread_fsm
*self
,
1451 struct thread_info
*thread
);
1452 static enum async_reply_reason
1453 until_next_fsm_async_reply_reason (struct thread_fsm
*self
);
1455 /* until_next_fsm's vtable. */
1457 static struct thread_fsm_ops until_next_fsm_ops
=
1460 until_next_fsm_clean_up
,
1461 until_next_fsm_should_stop
,
1462 NULL
, /* return_value */
1463 until_next_fsm_async_reply_reason
,
1466 /* Allocate a new until_next_fsm. */
1468 static struct until_next_fsm
*
1469 new_until_next_fsm (struct interp
*cmd_interp
, int thread
)
1471 struct until_next_fsm
*sm
;
1473 sm
= XCNEW (struct until_next_fsm
);
1474 thread_fsm_ctor (&sm
->thread_fsm
, &until_next_fsm_ops
, cmd_interp
);
1476 sm
->thread
= thread
;
1481 /* Implementation of the 'should_stop' FSM method for the until (with
1485 until_next_fsm_should_stop (struct thread_fsm
*self
,
1486 struct thread_info
*tp
)
1488 if (tp
->control
.stop_step
)
1489 thread_fsm_set_finished (self
);
1494 /* Implementation of the 'clean_up' FSM method for the until (with no
1498 until_next_fsm_clean_up (struct thread_fsm
*self
, struct thread_info
*thread
)
1500 delete_longjmp_breakpoint (thread
->global_num
);
1503 /* Implementation of the 'async_reply_reason' FSM method for the until
1504 (with no arg) command. */
1506 static enum async_reply_reason
1507 until_next_fsm_async_reply_reason (struct thread_fsm
*self
)
1509 return EXEC_ASYNC_END_STEPPING_RANGE
;
1512 /* Proceed until we reach a different source line with pc greater than
1513 our current one or exit the function. We skip calls in both cases.
1515 Note that eventually this command should probably be changed so
1516 that only source lines are printed out when we hit the breakpoint
1517 we set. This may involve changes to wait_for_inferior and the
1518 proceed status code. */
1521 until_next_command (int from_tty
)
1523 struct frame_info
*frame
;
1525 struct symbol
*func
;
1526 struct symtab_and_line sal
;
1527 struct thread_info
*tp
= inferior_thread ();
1528 int thread
= tp
->global_num
;
1529 struct cleanup
*old_chain
;
1530 struct until_next_fsm
*sm
;
1532 clear_proceed_status (0);
1535 frame
= get_current_frame ();
1537 /* Step until either exited from this function or greater
1538 than the current line (if in symbolic section) or pc (if
1541 pc
= get_frame_pc (frame
);
1542 func
= find_pc_function (pc
);
1546 struct bound_minimal_symbol msymbol
= lookup_minimal_symbol_by_pc (pc
);
1548 if (msymbol
.minsym
== NULL
)
1549 error (_("Execution is not within a known function."));
1551 tp
->control
.step_range_start
= BMSYMBOL_VALUE_ADDRESS (msymbol
);
1552 /* The upper-bound of step_range is exclusive. In order to make PC
1553 within the range, set the step_range_end with PC + 1. */
1554 tp
->control
.step_range_end
= pc
+ 1;
1558 sal
= find_pc_line (pc
, 0);
1560 tp
->control
.step_range_start
= BLOCK_START (SYMBOL_BLOCK_VALUE (func
));
1561 tp
->control
.step_range_end
= sal
.end
;
1563 tp
->control
.may_range_step
= 1;
1565 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1567 set_longjmp_breakpoint (tp
, get_frame_id (frame
));
1568 old_chain
= make_cleanup (delete_longjmp_breakpoint_cleanup
, &thread
);
1570 sm
= new_until_next_fsm (command_interp (), tp
->global_num
);
1571 tp
->thread_fsm
= &sm
->thread_fsm
;
1572 discard_cleanups (old_chain
);
1574 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
);
1578 until_command (const char *arg
, int from_tty
)
1583 ensure_not_tfind_mode ();
1584 ensure_valid_thread ();
1585 ensure_not_running ();
1587 /* Find out whether we must run in the background. */
1588 gdb::unique_xmalloc_ptr
<char> stripped
= strip_bg_char (arg
, &async_exec
);
1589 arg
= stripped
.get ();
1591 prepare_execution_command (¤t_target
, async_exec
);
1594 until_break_command (arg
, from_tty
, 0);
1596 until_next_command (from_tty
);
1600 advance_command (const char *arg
, int from_tty
)
1605 ensure_not_tfind_mode ();
1606 ensure_valid_thread ();
1607 ensure_not_running ();
1610 error_no_arg (_("a location"));
1612 /* Find out whether we must run in the background. */
1613 gdb::unique_xmalloc_ptr
<char> stripped
= strip_bg_char (arg
, &async_exec
);
1614 arg
= stripped
.get ();
1616 prepare_execution_command (¤t_target
, async_exec
);
1618 until_break_command (arg
, from_tty
, 1);
1621 /* Return the value of the result of a function at the end of a 'finish'
1622 command/BP. DTOR_DATA (if not NULL) can represent inferior registers
1623 right after an inferior call has finished. */
1626 get_return_value (struct value
*function
, struct type
*value_type
)
1628 regcache
*stop_regs
= get_current_regcache ();
1629 struct gdbarch
*gdbarch
= stop_regs
->arch ();
1630 struct value
*value
;
1632 value_type
= check_typedef (value_type
);
1633 gdb_assert (TYPE_CODE (value_type
) != TYPE_CODE_VOID
);
1635 /* FIXME: 2003-09-27: When returning from a nested inferior function
1636 call, it's possible (with no help from the architecture vector)
1637 to locate and return/print a "struct return" value. This is just
1638 a more complicated case of what is already being done in the
1639 inferior function call code. In fact, when inferior function
1640 calls are made async, this will likely be made the norm. */
1642 switch (gdbarch_return_value (gdbarch
, function
, value_type
,
1645 case RETURN_VALUE_REGISTER_CONVENTION
:
1646 case RETURN_VALUE_ABI_RETURNS_ADDRESS
:
1647 case RETURN_VALUE_ABI_PRESERVES_ADDRESS
:
1648 value
= allocate_value (value_type
);
1649 gdbarch_return_value (gdbarch
, function
, value_type
, stop_regs
,
1650 value_contents_raw (value
), NULL
);
1652 case RETURN_VALUE_STRUCT_CONVENTION
:
1656 internal_error (__FILE__
, __LINE__
, _("bad switch"));
1662 /* The captured function return value/type and its position in the
1665 struct return_value_info
1667 /* The captured return value. May be NULL if we weren't able to
1668 retrieve it. See get_return_value. */
1669 struct value
*value
;
1671 /* The return type. In some cases, we'll not be able extract the
1672 return value, but we always know the type. */
1675 /* If we captured a value, this is the value history index. */
1676 int value_history_index
;
1679 /* Helper for print_return_value. */
1682 print_return_value_1 (struct ui_out
*uiout
, struct return_value_info
*rv
)
1684 if (rv
->value
!= NULL
)
1686 struct value_print_options opts
;
1689 uiout
->text ("Value returned is ");
1690 uiout
->field_fmt ("gdb-result-var", "$%d",
1691 rv
->value_history_index
);
1692 uiout
->text (" = ");
1693 get_no_prettyformat_print_options (&opts
);
1697 value_print (rv
->value
, &stb
, &opts
);
1698 uiout
->field_stream ("return-value", stb
);
1703 std::string type_name
= type_to_string (rv
->type
);
1704 uiout
->text ("Value returned has type: ");
1705 uiout
->field_string ("return-type", type_name
.c_str ());
1707 uiout
->text (" Cannot determine contents\n");
1711 /* Print the result of a function at the end of a 'finish' command.
1712 RV points at an object representing the captured return value/type
1713 and its position in the value history. */
1716 print_return_value (struct ui_out
*uiout
, struct return_value_info
*rv
)
1718 if (rv
->type
== NULL
|| TYPE_CODE (rv
->type
) == TYPE_CODE_VOID
)
1723 /* print_return_value_1 can throw an exception in some
1724 circumstances. We need to catch this so that we still
1725 delete the breakpoint. */
1726 print_return_value_1 (uiout
, rv
);
1728 CATCH (ex
, RETURN_MASK_ALL
)
1730 exception_print (gdb_stdout
, ex
);
1735 /* Data for the FSM that manages the finish command. */
1737 struct finish_command_fsm
1739 /* The base class. */
1740 struct thread_fsm thread_fsm
;
1742 /* The momentary breakpoint set at the function's return address in
1744 struct breakpoint
*breakpoint
;
1746 /* The function that we're stepping out of. */
1747 struct symbol
*function
;
1749 /* If the FSM finishes successfully, this stores the function's
1751 struct return_value_info return_value
;
1754 static int finish_command_fsm_should_stop (struct thread_fsm
*self
,
1755 struct thread_info
*thread
);
1756 static void finish_command_fsm_clean_up (struct thread_fsm
*self
,
1757 struct thread_info
*thread
);
1758 static struct return_value_info
*
1759 finish_command_fsm_return_value (struct thread_fsm
*self
);
1760 static enum async_reply_reason
1761 finish_command_fsm_async_reply_reason (struct thread_fsm
*self
);
1763 /* finish_command_fsm's vtable. */
1765 static struct thread_fsm_ops finish_command_fsm_ops
=
1768 finish_command_fsm_clean_up
,
1769 finish_command_fsm_should_stop
,
1770 finish_command_fsm_return_value
,
1771 finish_command_fsm_async_reply_reason
,
1772 NULL
, /* should_notify_stop */
1775 /* Allocate a new finish_command_fsm. */
1777 static struct finish_command_fsm
*
1778 new_finish_command_fsm (struct interp
*cmd_interp
)
1780 struct finish_command_fsm
*sm
;
1782 sm
= XCNEW (struct finish_command_fsm
);
1783 thread_fsm_ctor (&sm
->thread_fsm
, &finish_command_fsm_ops
, cmd_interp
);
1788 /* Implementation of the 'should_stop' FSM method for the finish
1789 commands. Detects whether the thread stepped out of the function
1790 successfully, and if so, captures the function's return value and
1791 marks the FSM finished. */
1794 finish_command_fsm_should_stop (struct thread_fsm
*self
,
1795 struct thread_info
*tp
)
1797 struct finish_command_fsm
*f
= (struct finish_command_fsm
*) self
;
1798 struct return_value_info
*rv
= &f
->return_value
;
1800 if (f
->function
!= NULL
1801 && bpstat_find_breakpoint (tp
->control
.stop_bpstat
,
1802 f
->breakpoint
) != NULL
)
1805 thread_fsm_set_finished (self
);
1807 rv
->type
= TYPE_TARGET_TYPE (SYMBOL_TYPE (f
->function
));
1808 if (rv
->type
== NULL
)
1809 internal_error (__FILE__
, __LINE__
,
1810 _("finish_command: function has no target type"));
1812 if (TYPE_CODE (rv
->type
) != TYPE_CODE_VOID
)
1816 func
= read_var_value (f
->function
, NULL
, get_current_frame ());
1817 rv
->value
= get_return_value (func
, rv
->type
);
1818 if (rv
->value
!= NULL
)
1819 rv
->value_history_index
= record_latest_value (rv
->value
);
1822 else if (tp
->control
.stop_step
)
1824 /* Finishing from an inline frame, or reverse finishing. In
1825 either case, there's no way to retrieve the return value. */
1826 thread_fsm_set_finished (self
);
1832 /* Implementation of the 'clean_up' FSM method for the finish
1836 finish_command_fsm_clean_up (struct thread_fsm
*self
,
1837 struct thread_info
*thread
)
1839 struct finish_command_fsm
*f
= (struct finish_command_fsm
*) self
;
1841 if (f
->breakpoint
!= NULL
)
1843 delete_breakpoint (f
->breakpoint
);
1844 f
->breakpoint
= NULL
;
1846 delete_longjmp_breakpoint (thread
->global_num
);
1849 /* Implementation of the 'return_value' FSM method for the finish
1852 static struct return_value_info
*
1853 finish_command_fsm_return_value (struct thread_fsm
*self
)
1855 struct finish_command_fsm
*f
= (struct finish_command_fsm
*) self
;
1857 return &f
->return_value
;
1860 /* Implementation of the 'async_reply_reason' FSM method for the
1863 static enum async_reply_reason
1864 finish_command_fsm_async_reply_reason (struct thread_fsm
*self
)
1866 if (execution_direction
== EXEC_REVERSE
)
1867 return EXEC_ASYNC_END_STEPPING_RANGE
;
1869 return EXEC_ASYNC_FUNCTION_FINISHED
;
1872 /* finish_backward -- helper function for finish_command. */
1875 finish_backward (struct finish_command_fsm
*sm
)
1877 struct symtab_and_line sal
;
1878 struct thread_info
*tp
= inferior_thread ();
1880 CORE_ADDR func_addr
;
1882 pc
= get_frame_pc (get_current_frame ());
1884 if (find_pc_partial_function (pc
, NULL
, &func_addr
, NULL
) == 0)
1885 error (_("Cannot find bounds of current function"));
1887 sal
= find_pc_line (func_addr
, 0);
1889 tp
->control
.proceed_to_finish
= 1;
1890 /* Special case: if we're sitting at the function entry point,
1891 then all we need to do is take a reverse singlestep. We
1892 don't need to set a breakpoint, and indeed it would do us
1895 Note that this can only happen at frame #0, since there's
1896 no way that a function up the stack can have a return address
1897 that's equal to its entry point. */
1901 struct frame_info
*frame
= get_selected_frame (NULL
);
1902 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
1904 /* Set a step-resume at the function's entry point. Once that's
1905 hit, we'll do one more step backwards. */
1906 symtab_and_line sr_sal
;
1908 sr_sal
.pspace
= get_frame_program_space (frame
);
1909 insert_step_resume_breakpoint_at_sal (gdbarch
,
1910 sr_sal
, null_frame_id
);
1912 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
);
1916 /* We're almost there -- we just need to back up by one more
1918 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1919 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
);
1923 /* finish_forward -- helper function for finish_command. FRAME is the
1924 frame that called the function we're about to step out of. */
1927 finish_forward (struct finish_command_fsm
*sm
, struct frame_info
*frame
)
1929 struct frame_id frame_id
= get_frame_id (frame
);
1930 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
1931 struct symtab_and_line sal
;
1932 struct thread_info
*tp
= inferior_thread ();
1934 sal
= find_pc_line (get_frame_pc (frame
), 0);
1935 sal
.pc
= get_frame_pc (frame
);
1937 sm
->breakpoint
= set_momentary_breakpoint (gdbarch
, sal
,
1938 get_stack_frame_id (frame
),
1939 bp_finish
).release ();
1941 /* set_momentary_breakpoint invalidates FRAME. */
1944 set_longjmp_breakpoint (tp
, frame_id
);
1946 /* We want to print return value, please... */
1947 tp
->control
.proceed_to_finish
= 1;
1949 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
);
1952 /* Skip frames for "finish". */
1954 static struct frame_info
*
1955 skip_finish_frames (struct frame_info
*frame
)
1957 struct frame_info
*start
;
1963 frame
= skip_tailcall_frames (frame
);
1967 frame
= skip_unwritable_frames (frame
);
1971 while (start
!= frame
);
1976 /* "finish": Set a temporary breakpoint at the place the selected
1977 frame will return to, then continue. */
1980 finish_command (const char *arg
, int from_tty
)
1982 struct frame_info
*frame
;
1984 struct finish_command_fsm
*sm
;
1985 struct thread_info
*tp
;
1988 ensure_not_tfind_mode ();
1989 ensure_valid_thread ();
1990 ensure_not_running ();
1992 /* Find out whether we must run in the background. */
1993 gdb::unique_xmalloc_ptr
<char> stripped
= strip_bg_char (arg
, &async_exec
);
1994 arg
= stripped
.get ();
1996 prepare_execution_command (¤t_target
, async_exec
);
1999 error (_("The \"finish\" command does not take any arguments."));
2001 frame
= get_prev_frame (get_selected_frame (_("No selected frame.")));
2003 error (_("\"finish\" not meaningful in the outermost frame."));
2005 clear_proceed_status (0);
2007 tp
= inferior_thread ();
2009 sm
= new_finish_command_fsm (command_interp ());
2011 tp
->thread_fsm
= &sm
->thread_fsm
;
2013 /* Finishing from an inline frame is completely different. We don't
2014 try to show the "return value" - no way to locate it. */
2015 if (get_frame_type (get_selected_frame (_("No selected frame.")))
2018 /* Claim we are stepping in the calling frame. An empty step
2019 range means that we will stop once we aren't in a function
2020 called by that frame. We don't use the magic "1" value for
2021 step_range_end, because then infrun will think this is nexti,
2022 and not step over the rest of this inlined function call. */
2023 set_step_info (frame
, {});
2024 tp
->control
.step_range_start
= get_frame_pc (frame
);
2025 tp
->control
.step_range_end
= tp
->control
.step_range_start
;
2026 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
2028 /* Print info on the selected frame, including level number but not
2032 printf_filtered (_("Run till exit from "));
2033 print_stack_frame (get_selected_frame (NULL
), 1, LOCATION
, 0);
2036 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
);
2040 /* Find the function we will return from. */
2042 sm
->function
= find_pc_function (get_frame_pc (get_selected_frame (NULL
)));
2044 /* Print info on the selected frame, including level number but not
2048 if (execution_direction
== EXEC_REVERSE
)
2049 printf_filtered (_("Run back to call of "));
2052 if (sm
->function
!= NULL
&& TYPE_NO_RETURN (sm
->function
->type
)
2053 && !query (_("warning: Function %s does not return normally.\n"
2054 "Try to finish anyway? "),
2055 SYMBOL_PRINT_NAME (sm
->function
)))
2056 error (_("Not confirmed."));
2057 printf_filtered (_("Run till exit from "));
2060 print_stack_frame (get_selected_frame (NULL
), 1, LOCATION
, 0);
2063 if (execution_direction
== EXEC_REVERSE
)
2064 finish_backward (sm
);
2067 frame
= skip_finish_frames (frame
);
2070 error (_("Cannot find the caller frame."));
2072 finish_forward (sm
, frame
);
2078 info_program_command (const char *args
, int from_tty
)
2082 struct thread_info
*tp
;
2085 if (!target_has_execution
)
2087 printf_filtered (_("The program being debugged is not being run.\n"));
2092 ptid
= inferior_ptid
;
2095 struct target_waitstatus ws
;
2097 get_last_target_status (&ptid
, &ws
);
2100 if (ptid_equal (ptid
, null_ptid
) || is_exited (ptid
))
2101 error (_("Invalid selected thread."));
2102 else if (is_running (ptid
))
2103 error (_("Selected thread is running."));
2105 tp
= find_thread_ptid (ptid
);
2106 bs
= tp
->control
.stop_bpstat
;
2107 stat
= bpstat_num (&bs
, &num
);
2109 target_files_info ();
2110 printf_filtered (_("Program stopped at %s.\n"),
2111 paddress (target_gdbarch (), stop_pc
));
2112 if (tp
->control
.stop_step
)
2113 printf_filtered (_("It stopped after being stepped.\n"));
2116 /* There may be several breakpoints in the same place, so this
2117 isn't as strange as it seems. */
2122 printf_filtered (_("It stopped at a breakpoint "
2123 "that has since been deleted.\n"));
2126 printf_filtered (_("It stopped at breakpoint %d.\n"), num
);
2127 stat
= bpstat_num (&bs
, &num
);
2130 else if (tp
->suspend
.stop_signal
!= GDB_SIGNAL_0
)
2132 printf_filtered (_("It stopped with signal %s, %s.\n"),
2133 gdb_signal_to_name (tp
->suspend
.stop_signal
),
2134 gdb_signal_to_string (tp
->suspend
.stop_signal
));
2139 printf_filtered (_("Type \"info stack\" or \"info "
2140 "registers\" for more information.\n"));
2145 environment_info (const char *var
, int from_tty
)
2149 const char *val
= current_inferior ()->environment
.get (var
);
2153 puts_filtered (var
);
2154 puts_filtered (" = ");
2155 puts_filtered (val
);
2156 puts_filtered ("\n");
2160 puts_filtered ("Environment variable \"");
2161 puts_filtered (var
);
2162 puts_filtered ("\" not defined.\n");
2167 char **envp
= current_inferior ()->environment
.envp ();
2169 for (int idx
= 0; envp
[idx
] != NULL
; ++idx
)
2171 puts_filtered (envp
[idx
]);
2172 puts_filtered ("\n");
2178 set_environment_command (const char *arg
, int from_tty
)
2180 const char *p
, *val
;
2184 error_no_arg (_("environment variable and value"));
2186 /* Find seperation between variable name and value. */
2187 p
= (char *) strchr (arg
, '=');
2188 val
= (char *) strchr (arg
, ' ');
2190 if (p
!= 0 && val
!= 0)
2192 /* We have both a space and an equals. If the space is before the
2193 equals, walk forward over the spaces til we see a nonspace
2194 (possibly the equals). */
2199 /* Now if the = is after the char following the spaces,
2200 take the char following the spaces. */
2204 else if (val
!= 0 && p
== 0)
2208 error_no_arg (_("environment variable to set"));
2210 if (p
== 0 || p
[1] == 0)
2214 p
= arg
+ strlen (arg
); /* So that savestring below will work. */
2218 /* Not setting variable value to null. */
2220 while (*val
== ' ' || *val
== '\t')
2224 while (p
!= arg
&& (p
[-1] == ' ' || p
[-1] == '\t'))
2227 std::string
var (arg
, p
- arg
);
2230 printf_filtered (_("Setting environment variable "
2231 "\"%s\" to null value.\n"),
2233 current_inferior ()->environment
.set (var
.c_str (), "");
2236 current_inferior ()->environment
.set (var
.c_str (), val
);
2240 unset_environment_command (const char *var
, int from_tty
)
2244 /* If there is no argument, delete all environment variables.
2245 Ask for confirmation if reading from the terminal. */
2246 if (!from_tty
|| query (_("Delete all environment variables? ")))
2247 current_inferior ()->environment
.clear ();
2250 current_inferior ()->environment
.unset (var
);
2253 /* Handle the execution path (PATH variable). */
2255 static const char path_var_name
[] = "PATH";
2258 path_info (const char *args
, int from_tty
)
2260 puts_filtered ("Executable and object file path: ");
2261 puts_filtered (current_inferior ()->environment
.get (path_var_name
));
2262 puts_filtered ("\n");
2265 /* Add zero or more directories to the front of the execution path. */
2268 path_command (const char *dirname
, int from_tty
)
2274 env
= current_inferior ()->environment
.get (path_var_name
);
2275 /* Can be null if path is not set. */
2278 exec_path
= xstrdup (env
);
2279 mod_path (dirname
, &exec_path
);
2280 current_inferior ()->environment
.set (path_var_name
, exec_path
);
2283 path_info ((char *) NULL
, from_tty
);
2288 pad_to_column (string_file
&stream
, int col
)
2290 /* At least one space must be printed to separate columns. */
2292 const int size
= stream
.size ();
2294 stream
.puts (n_spaces (col
- size
));
2297 /* Print out the register NAME with value VAL, to FILE, in the default
2301 default_print_one_register_info (struct ui_file
*file
,
2305 struct type
*regtype
= value_type (val
);
2306 int print_raw_format
;
2307 string_file format_stream
;
2310 value_column_1
= 15,
2311 /* Give enough room for "0x", 16 hex digits and two spaces in
2312 preceding column. */
2313 value_column_2
= value_column_1
+ 2 + 16 + 2,
2316 format_stream
.puts (name
);
2317 pad_to_column (format_stream
, value_column_1
);
2319 print_raw_format
= (value_entirely_available (val
)
2320 && !value_optimized_out (val
));
2322 /* If virtual format is floating, print it that way, and in raw
2324 if (TYPE_CODE (regtype
) == TYPE_CODE_FLT
2325 || TYPE_CODE (regtype
) == TYPE_CODE_DECFLOAT
)
2327 struct value_print_options opts
;
2328 const gdb_byte
*valaddr
= value_contents_for_printing (val
);
2329 enum bfd_endian byte_order
= gdbarch_byte_order (get_type_arch (regtype
));
2331 get_user_print_options (&opts
);
2335 value_embedded_offset (val
), 0,
2336 &format_stream
, 0, val
, &opts
, current_language
);
2338 if (print_raw_format
)
2340 pad_to_column (format_stream
, value_column_2
);
2341 format_stream
.puts ("(raw ");
2342 print_hex_chars (&format_stream
, valaddr
, TYPE_LENGTH (regtype
),
2344 format_stream
.putc (')');
2349 struct value_print_options opts
;
2351 /* Print the register in hex. */
2352 get_formatted_print_options (&opts
, 'x');
2355 value_embedded_offset (val
), 0,
2356 &format_stream
, 0, val
, &opts
, current_language
);
2357 /* If not a vector register, print it also according to its
2359 if (print_raw_format
&& TYPE_VECTOR (regtype
) == 0)
2361 pad_to_column (format_stream
, value_column_2
);
2362 get_user_print_options (&opts
);
2365 value_embedded_offset (val
), 0,
2366 &format_stream
, 0, val
, &opts
, current_language
);
2370 fputs_filtered (format_stream
.c_str (), file
);
2371 fprintf_filtered (file
, "\n");
2374 /* Print out the machine register regnum. If regnum is -1, print all
2375 registers (print_all == 1) or all non-float and non-vector
2376 registers (print_all == 0).
2378 For most machines, having all_registers_info() print the
2379 register(s) one per line is good enough. If a different format is
2380 required, (eg, for MIPS or Pyramid 90x, which both have lots of
2381 regs), or there is an existing convention for showing all the
2382 registers, define the architecture method PRINT_REGISTERS_INFO to
2383 provide that format. */
2386 default_print_registers_info (struct gdbarch
*gdbarch
,
2387 struct ui_file
*file
,
2388 struct frame_info
*frame
,
2389 int regnum
, int print_all
)
2392 const int numregs
= gdbarch_num_regs (gdbarch
)
2393 + gdbarch_num_pseudo_regs (gdbarch
);
2395 for (i
= 0; i
< numregs
; i
++)
2397 /* Decide between printing all regs, non-float / vector regs, or
2403 if (!gdbarch_register_reggroup_p (gdbarch
, i
, all_reggroup
))
2408 if (!gdbarch_register_reggroup_p (gdbarch
, i
, general_reggroup
))
2418 /* If the register name is empty, it is undefined for this
2419 processor, so don't display anything. */
2420 if (gdbarch_register_name (gdbarch
, i
) == NULL
2421 || *(gdbarch_register_name (gdbarch
, i
)) == '\0')
2424 default_print_one_register_info (file
,
2425 gdbarch_register_name (gdbarch
, i
),
2426 value_of_register (i
, frame
));
2431 registers_info (const char *addr_exp
, int fpregs
)
2433 struct frame_info
*frame
;
2434 struct gdbarch
*gdbarch
;
2436 if (!target_has_registers
)
2437 error (_("The program has no registers now."));
2438 frame
= get_selected_frame (NULL
);
2439 gdbarch
= get_frame_arch (frame
);
2443 gdbarch_print_registers_info (gdbarch
, gdb_stdout
,
2448 while (*addr_exp
!= '\0')
2453 /* Skip leading white space. */
2454 addr_exp
= skip_spaces (addr_exp
);
2456 /* Discard any leading ``$''. Check that there is something
2457 resembling a register following it. */
2458 if (addr_exp
[0] == '$')
2460 if (isspace ((*addr_exp
)) || (*addr_exp
) == '\0')
2461 error (_("Missing register name"));
2463 /* Find the start/end of this register name/num/group. */
2465 while ((*addr_exp
) != '\0' && !isspace ((*addr_exp
)))
2469 /* Figure out what we've found and display it. */
2471 /* A register name? */
2473 int regnum
= user_reg_map_name_to_regnum (gdbarch
, start
, end
- start
);
2477 /* User registers lie completely outside of the range of
2478 normal registers. Catch them early so that the target
2480 if (regnum
>= gdbarch_num_regs (gdbarch
)
2481 + gdbarch_num_pseudo_regs (gdbarch
))
2483 struct value
*regval
= value_of_user_reg (regnum
, frame
);
2484 const char *regname
= user_reg_map_regnum_to_name (gdbarch
,
2487 /* Print in the same fashion
2488 gdbarch_print_registers_info's default
2489 implementation prints. */
2490 default_print_one_register_info (gdb_stdout
,
2495 gdbarch_print_registers_info (gdbarch
, gdb_stdout
,
2496 frame
, regnum
, fpregs
);
2501 /* A register group? */
2503 struct reggroup
*group
;
2505 for (group
= reggroup_next (gdbarch
, NULL
);
2507 group
= reggroup_next (gdbarch
, group
))
2509 /* Don't bother with a length check. Should the user
2510 enter a short register group name, go with the first
2511 group that matches. */
2512 if (strncmp (start
, reggroup_name (group
), end
- start
) == 0)
2520 regnum
< gdbarch_num_regs (gdbarch
)
2521 + gdbarch_num_pseudo_regs (gdbarch
);
2524 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, group
))
2525 gdbarch_print_registers_info (gdbarch
,
2533 /* Nothing matched. */
2534 error (_("Invalid register `%.*s'"), (int) (end
- start
), start
);
2539 info_all_registers_command (const char *addr_exp
, int from_tty
)
2541 registers_info (addr_exp
, 1);
2545 info_registers_command (const char *addr_exp
, int from_tty
)
2547 registers_info (addr_exp
, 0);
2551 print_vector_info (struct ui_file
*file
,
2552 struct frame_info
*frame
, const char *args
)
2554 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
2556 if (gdbarch_print_vector_info_p (gdbarch
))
2557 gdbarch_print_vector_info (gdbarch
, file
, frame
, args
);
2561 int printed_something
= 0;
2564 regnum
< gdbarch_num_regs (gdbarch
)
2565 + gdbarch_num_pseudo_regs (gdbarch
);
2568 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, vector_reggroup
))
2570 printed_something
= 1;
2571 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
2574 if (!printed_something
)
2575 fprintf_filtered (file
, "No vector information\n");
2580 info_vector_command (const char *args
, int from_tty
)
2582 if (!target_has_registers
)
2583 error (_("The program has no registers now."));
2585 print_vector_info (gdb_stdout
, get_selected_frame (NULL
), args
);
2588 /* Kill the inferior process. Make us have no inferior. */
2591 kill_command (const char *arg
, int from_tty
)
2593 /* FIXME: This should not really be inferior_ptid (or target_has_execution).
2594 It should be a distinct flag that indicates that a target is active, cuz
2595 some targets don't have processes! */
2597 if (ptid_equal (inferior_ptid
, null_ptid
))
2598 error (_("The program is not being run."));
2599 if (!query (_("Kill the program being debugged? ")))
2600 error (_("Not confirmed."));
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. ARG is a point to an integer
2621 representing a process id. Proceed threads of this process iff
2622 they stopped due to debugger request, and when they did, they
2623 reported a clean stop (GDB_SIGNAL_0). Do not proceed threads
2624 that have been explicitly been told to stop. */
2627 proceed_after_attach_callback (struct thread_info
*thread
,
2630 int pid
= * (int *) arg
;
2632 if (ptid_get_pid (thread
->ptid
) == pid
2633 && !is_exited (thread
->ptid
)
2634 && !is_executing (thread
->ptid
)
2635 && !thread
->stop_requested
2636 && thread
->suspend
.stop_signal
== GDB_SIGNAL_0
)
2638 switch_to_thread (thread
->ptid
);
2639 clear_proceed_status (0);
2640 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
);
2647 proceed_after_attach (int pid
)
2649 /* Don't error out if the current thread is running, because
2650 there may be other stopped threads. */
2652 /* Backup current thread and selected frame. */
2653 scoped_restore_current_thread restore_thread
;
2655 iterate_over_threads (proceed_after_attach_callback
, &pid
);
2658 /* See inferior.h. */
2661 setup_inferior (int from_tty
)
2663 struct inferior
*inferior
;
2665 inferior
= current_inferior ();
2666 inferior
->needs_setup
= 0;
2668 /* If no exec file is yet known, try to determine it from the
2670 if (get_exec_file (0) == NULL
)
2671 exec_file_locate_attach (ptid_get_pid (inferior_ptid
), 1, from_tty
);
2674 reopen_exec_file ();
2678 /* Take any necessary post-attaching actions for this platform. */
2679 target_post_attach (ptid_get_pid (inferior_ptid
));
2681 post_create_inferior (¤t_target
, from_tty
);
2684 /* What to do after the first program stops after attaching. */
2685 enum attach_post_wait_mode
2687 /* Do nothing. Leaves threads as they are. */
2688 ATTACH_POST_WAIT_NOTHING
,
2690 /* Re-resume threads that are marked running. */
2691 ATTACH_POST_WAIT_RESUME
,
2693 /* Stop all threads. */
2694 ATTACH_POST_WAIT_STOP
,
2697 /* Called after we've attached to a process and we've seen it stop for
2698 the first time. If ASYNC_EXEC is true, re-resume threads that
2699 should be running. Else if ATTACH, */
2702 attach_post_wait (const char *args
, int from_tty
, enum attach_post_wait_mode mode
)
2704 struct inferior
*inferior
;
2706 inferior
= current_inferior ();
2707 inferior
->control
.stop_soon
= NO_STOP_QUIETLY
;
2709 if (inferior
->needs_setup
)
2710 setup_inferior (from_tty
);
2712 if (mode
== ATTACH_POST_WAIT_RESUME
)
2714 /* The user requested an `attach&', so be sure to leave threads
2715 that didn't get a signal running. */
2717 /* Immediatelly resume all suspended threads of this inferior,
2718 and this inferior only. This should have no effect on
2719 already running threads. If a thread has been stopped with a
2720 signal, leave it be. */
2722 proceed_after_attach (inferior
->pid
);
2725 if (inferior_thread ()->suspend
.stop_signal
== GDB_SIGNAL_0
)
2727 clear_proceed_status (0);
2728 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
);
2732 else if (mode
== ATTACH_POST_WAIT_STOP
)
2734 /* The user requested a plain `attach', so be sure to leave
2735 the inferior stopped. */
2737 /* At least the current thread is already stopped. */
2739 /* In all-stop, by definition, all threads have to be already
2740 stopped at this point. In non-stop, however, although the
2741 selected thread is stopped, others may still be executing.
2742 Be sure to explicitly stop all threads of the process. This
2743 should have no effect on already stopped threads. */
2745 target_stop (pid_to_ptid (inferior
->pid
));
2746 else if (target_is_non_stop_p ())
2748 struct thread_info
*thread
;
2749 struct thread_info
*lowest
= inferior_thread ();
2750 int pid
= current_inferior ()->pid
;
2752 stop_all_threads ();
2754 /* It's not defined which thread will report the attach
2755 stop. For consistency, always select the thread with
2756 lowest GDB number, which should be the main thread, if it
2758 ALL_NON_EXITED_THREADS (thread
)
2760 if (ptid_get_pid (thread
->ptid
) == pid
)
2762 if (thread
->inf
->num
< lowest
->inf
->num
2763 || thread
->per_inf_num
< lowest
->per_inf_num
)
2768 switch_to_thread (lowest
->ptid
);
2771 /* Tell the user/frontend where we're stopped. */
2773 if (deprecated_attach_hook
)
2774 deprecated_attach_hook ();
2778 struct attach_command_continuation_args
2782 enum attach_post_wait_mode mode
;
2786 attach_command_continuation (void *args
, int err
)
2788 struct attach_command_continuation_args
*a
2789 = (struct attach_command_continuation_args
*) args
;
2794 attach_post_wait (a
->args
, a
->from_tty
, a
->mode
);
2798 attach_command_continuation_free_args (void *args
)
2800 struct attach_command_continuation_args
*a
2801 = (struct attach_command_continuation_args
*) args
;
2807 /* "attach" command entry point. Takes a program started up outside
2808 of gdb and ``attaches'' to it. This stops it cold in its tracks
2809 and allows us to start debugging it. */
2812 attach_command (const char *args
, int from_tty
)
2815 struct target_ops
*attach_target
;
2816 struct inferior
*inferior
= current_inferior ();
2817 enum attach_post_wait_mode mode
;
2819 dont_repeat (); /* Not for the faint of heart */
2821 if (gdbarch_has_global_solist (target_gdbarch ()))
2822 /* Don't complain if all processes share the same symbol
2825 else if (target_has_execution
)
2827 if (query (_("A program is being debugged already. Kill it? ")))
2830 error (_("Not killed."));
2833 /* Clean up any leftovers from other runs. Some other things from
2834 this function should probably be moved into target_pre_inferior. */
2835 target_pre_inferior (from_tty
);
2837 gdb::unique_xmalloc_ptr
<char> stripped
= strip_bg_char (args
, &async_exec
);
2838 args
= stripped
.get ();
2840 attach_target
= find_attach_target ();
2842 prepare_execution_command (attach_target
, async_exec
);
2844 if (non_stop
&& !attach_target
->to_supports_non_stop (attach_target
))
2845 error (_("Cannot attach to this target in non-stop mode"));
2847 attach_target
->to_attach (attach_target
, args
, from_tty
);
2848 /* to_attach should push the target, so after this point we
2849 shouldn't refer to attach_target again. */
2850 attach_target
= NULL
;
2852 /* Set up the "saved terminal modes" of the inferior
2853 based on what modes we are starting it with. */
2854 target_terminal::init ();
2856 /* Install inferior's terminal modes. This may look like a no-op,
2857 as we've just saved them above, however, this does more than
2858 restore terminal settings:
2860 - installs a SIGINT handler that forwards SIGINT to the inferior.
2861 Otherwise a Ctrl-C pressed just while waiting for the initial
2862 stop would end up as a spurious Quit.
2864 - removes stdin from the event loop, which we need if attaching
2865 in the foreground, otherwise on targets that report an initial
2866 stop on attach (which are most) we'd process input/commands
2867 while we're in the event loop waiting for that stop. That is,
2868 before the attach continuation runs and the command is really
2870 target_terminal::inferior ();
2872 /* Set up execution context to know that we should return from
2873 wait_for_inferior as soon as the target reports a stop. */
2874 init_wait_for_inferior ();
2875 clear_proceed_status (0);
2877 inferior
->needs_setup
= 1;
2879 if (target_is_non_stop_p ())
2881 /* If we find that the current thread isn't stopped, explicitly
2882 do so now, because we're going to install breakpoints and
2886 /* The user requested an `attach&'; stop just one thread. */
2887 target_stop (inferior_ptid
);
2889 /* The user requested an `attach', so stop all threads of this
2891 target_stop (pid_to_ptid (ptid_get_pid (inferior_ptid
)));
2894 mode
= async_exec
? ATTACH_POST_WAIT_RESUME
: ATTACH_POST_WAIT_STOP
;
2896 /* Some system don't generate traps when attaching to inferior.
2897 E.g. Mach 3 or GNU hurd. */
2898 if (!target_attach_no_wait
)
2900 struct attach_command_continuation_args
*a
;
2902 /* Careful here. See comments in inferior.h. Basically some
2903 OSes don't ignore SIGSTOPs on continue requests anymore. We
2904 need a way for handle_inferior_event to reset the stop_signal
2905 variable after an attach, and this is what
2906 STOP_QUIETLY_NO_SIGSTOP is for. */
2907 inferior
->control
.stop_soon
= STOP_QUIETLY_NO_SIGSTOP
;
2909 /* Wait for stop. */
2910 a
= XNEW (struct attach_command_continuation_args
);
2911 a
->args
= xstrdup (args
);
2912 a
->from_tty
= from_tty
;
2914 add_inferior_continuation (attach_command_continuation
, a
,
2915 attach_command_continuation_free_args
);
2917 if (!target_is_async_p ())
2918 mark_infrun_async_event_handler ();
2922 attach_post_wait (args
, from_tty
, mode
);
2925 /* We had just found out that the target was already attached to an
2926 inferior. PTID points at a thread of this new inferior, that is
2927 the most likely to be stopped right now, but not necessarily so.
2928 The new inferior is assumed to be already added to the inferior
2929 list at this point. If LEAVE_RUNNING, then leave the threads of
2930 this inferior running, except those we've explicitly seen reported
2934 notice_new_inferior (ptid_t ptid
, int leave_running
, int from_tty
)
2936 enum attach_post_wait_mode mode
2937 = leave_running
? ATTACH_POST_WAIT_RESUME
: ATTACH_POST_WAIT_NOTHING
;
2939 gdb::optional
<scoped_restore_current_thread
> restore_thread
;
2941 if (inferior_ptid
!= null_ptid
)
2942 restore_thread
.emplace ();
2944 /* Avoid reading registers -- we haven't fetched the target
2946 switch_to_thread_no_regs (find_thread_ptid (ptid
));
2948 /* When we "notice" a new inferior we need to do all the things we
2949 would normally do if we had just attached to it. */
2951 if (is_executing (inferior_ptid
))
2953 struct attach_command_continuation_args
*a
;
2954 struct inferior
*inferior
= current_inferior ();
2956 /* We're going to install breakpoints, and poke at memory,
2957 ensure that the inferior is stopped for a moment while we do
2959 target_stop (inferior_ptid
);
2961 inferior
->control
.stop_soon
= STOP_QUIETLY_REMOTE
;
2963 /* Wait for stop before proceeding. */
2964 a
= XNEW (struct attach_command_continuation_args
);
2965 a
->args
= xstrdup ("");
2966 a
->from_tty
= from_tty
;
2968 add_inferior_continuation (attach_command_continuation
, a
,
2969 attach_command_continuation_free_args
);
2974 attach_post_wait ("" /* args */, from_tty
, mode
);
2979 * takes a program previously attached to and detaches it.
2980 * The program resumes execution and will no longer stop
2981 * on signals, etc. We better not have left any breakpoints
2982 * in the program or it'll die when it hits one. For this
2983 * to work, it may be necessary for the process to have been
2984 * previously attached. It *might* work if the program was
2985 * started via the normal ptrace (PTRACE_TRACEME).
2989 detach_command (const char *args
, int from_tty
)
2991 dont_repeat (); /* Not for the faint of heart. */
2993 if (ptid_equal (inferior_ptid
, null_ptid
))
2994 error (_("The program is not being run."));
2996 query_if_trace_running (from_tty
);
2998 disconnect_tracing ();
3000 target_detach (current_inferior (), from_tty
);
3002 /* The current inferior process was just detached successfully. Get
3003 rid of breakpoints that no longer make sense. Note we don't do
3004 this within target_detach because that is also used when
3005 following child forks, and in that case we will want to transfer
3006 breakpoints to the child, not delete them. */
3007 breakpoint_init_inferior (inf_exited
);
3009 /* If the solist is global across inferiors, don't clear it when we
3010 detach from a single inferior. */
3011 if (!gdbarch_has_global_solist (target_gdbarch ()))
3012 no_shared_libraries (NULL
, from_tty
);
3014 /* If we still have inferiors to debug, then don't mess with their
3016 if (!have_inferiors ())
3017 init_thread_list ();
3019 if (deprecated_detach_hook
)
3020 deprecated_detach_hook ();
3023 /* Disconnect from the current target without resuming it (leaving it
3024 waiting for a debugger).
3026 We'd better not have left any breakpoints in the program or the
3027 next debugger will get confused. Currently only supported for some
3028 remote targets, since the normal attach mechanisms don't work on
3029 stopped processes on some native platforms (e.g. GNU/Linux). */
3032 disconnect_command (const char *args
, int from_tty
)
3034 dont_repeat (); /* Not for the faint of heart. */
3035 query_if_trace_running (from_tty
);
3036 disconnect_tracing ();
3037 target_disconnect (args
, from_tty
);
3038 no_shared_libraries (NULL
, from_tty
);
3039 init_thread_list ();
3040 if (deprecated_detach_hook
)
3041 deprecated_detach_hook ();
3045 interrupt_target_1 (int all_threads
)
3050 ptid
= minus_one_ptid
;
3052 ptid
= inferior_ptid
;
3057 target_interrupt ();
3059 /* Tag the thread as having been explicitly requested to stop, so
3060 other parts of gdb know not to resume this thread automatically,
3061 if it was stopped due to an internal event. Limit this to
3062 non-stop mode, as when debugging a multi-threaded application in
3063 all-stop mode, we will only get one stop event --- it's undefined
3064 which thread will report the event. */
3066 set_stop_requested (ptid
, 1);
3070 Stop the execution of the target while running in async mode, in
3071 the background. In all-stop, stop the whole process. In non-stop
3072 mode, stop the current thread only by default, or stop all threads
3073 if the `-a' switch is used. */
3076 interrupt_command (const char *args
, int from_tty
)
3078 if (target_can_async_p ())
3080 int all_threads
= 0;
3082 dont_repeat (); /* Not for the faint of heart. */
3085 && startswith (args
, "-a"))
3088 if (!non_stop
&& all_threads
)
3089 error (_("-a is meaningless in all-stop mode."));
3091 interrupt_target_1 (all_threads
);
3095 /* See inferior.h. */
3098 default_print_float_info (struct gdbarch
*gdbarch
, struct ui_file
*file
,
3099 struct frame_info
*frame
, const char *args
)
3102 int printed_something
= 0;
3105 regnum
< gdbarch_num_regs (gdbarch
)
3106 + gdbarch_num_pseudo_regs (gdbarch
);
3109 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, float_reggroup
))
3111 printed_something
= 1;
3112 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
3115 if (!printed_something
)
3116 fprintf_filtered (file
, "No floating-point info "
3117 "available for this processor.\n");
3121 info_float_command (const char *args
, int from_tty
)
3123 struct frame_info
*frame
;
3125 if (!target_has_registers
)
3126 error (_("The program has no registers now."));
3128 frame
= get_selected_frame (NULL
);
3129 gdbarch_print_float_info (get_frame_arch (frame
), gdb_stdout
, frame
, args
);
3133 unset_command (const char *args
, int from_tty
)
3135 printf_filtered (_("\"unset\" must be followed by the "
3136 "name of an unset subcommand.\n"));
3137 help_list (unsetlist
, "unset ", all_commands
, gdb_stdout
);
3140 /* Implement `info proc' family of commands. */
3143 info_proc_cmd_1 (const char *args
, enum info_proc_what what
, int from_tty
)
3145 struct gdbarch
*gdbarch
= get_current_arch ();
3147 if (!target_info_proc (args
, what
))
3149 if (gdbarch_info_proc_p (gdbarch
))
3150 gdbarch_info_proc (gdbarch
, args
, what
);
3152 error (_("Not supported on this target."));
3156 /* Implement `info proc' when given without any futher parameters. */
3159 info_proc_cmd (const char *args
, int from_tty
)
3161 info_proc_cmd_1 (args
, IP_MINIMAL
, from_tty
);
3164 /* Implement `info proc mappings'. */
3167 info_proc_cmd_mappings (const char *args
, int from_tty
)
3169 info_proc_cmd_1 (args
, IP_MAPPINGS
, from_tty
);
3172 /* Implement `info proc stat'. */
3175 info_proc_cmd_stat (const char *args
, int from_tty
)
3177 info_proc_cmd_1 (args
, IP_STAT
, from_tty
);
3180 /* Implement `info proc status'. */
3183 info_proc_cmd_status (const char *args
, int from_tty
)
3185 info_proc_cmd_1 (args
, IP_STATUS
, from_tty
);
3188 /* Implement `info proc cwd'. */
3191 info_proc_cmd_cwd (const char *args
, int from_tty
)
3193 info_proc_cmd_1 (args
, IP_CWD
, from_tty
);
3196 /* Implement `info proc cmdline'. */
3199 info_proc_cmd_cmdline (const char *args
, int from_tty
)
3201 info_proc_cmd_1 (args
, IP_CMDLINE
, from_tty
);
3204 /* Implement `info proc exe'. */
3207 info_proc_cmd_exe (const char *args
, int from_tty
)
3209 info_proc_cmd_1 (args
, IP_EXE
, from_tty
);
3212 /* Implement `info proc all'. */
3215 info_proc_cmd_all (const char *args
, int from_tty
)
3217 info_proc_cmd_1 (args
, IP_ALL
, from_tty
);
3220 /* This help string is used for the run, start, and starti commands.
3221 It is defined as a macro to prevent duplication. */
3223 #define RUN_ARGS_HELP \
3224 "You may specify arguments to give it.\n\
3225 Args may include \"*\", or \"[...]\"; they are expanded using the\n\
3226 shell that will start the program (specified by the \"$SHELL\" environment\n\
3227 variable). Input and output redirection with \">\", \"<\", or \">>\"\n\
3228 are also allowed.\n\
3230 With no arguments, uses arguments last specified (with \"run\" or \n\
3231 \"set args\"). To cancel previous arguments and run with no arguments,\n\
3232 use \"set args\" without arguments.\n\
3234 To start the inferior without using a shell, use \"set startup-with-shell off\"."
3237 _initialize_infcmd (void)
3239 static struct cmd_list_element
*info_proc_cmdlist
;
3240 struct cmd_list_element
*c
= NULL
;
3241 const char *cmd_name
;
3243 /* Add the filename of the terminal connected to inferior I/O. */
3244 add_setshow_optional_filename_cmd ("inferior-tty", class_run
,
3245 &inferior_io_terminal_scratch
, _("\
3246 Set terminal for future runs of program being debugged."), _("\
3247 Show terminal for future runs of program being debugged."), _("\
3248 Usage: set inferior-tty [TTY]\n\n\
3249 If TTY is omitted, the default behavior of using the same terminal as GDB\n\
3251 set_inferior_tty_command
,
3252 show_inferior_tty_command
,
3253 &setlist
, &showlist
);
3254 cmd_name
= "inferior-tty";
3255 c
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
3256 gdb_assert (c
!= NULL
);
3257 add_alias_cmd ("tty", c
, class_alias
, 0, &cmdlist
);
3260 add_setshow_string_noescape_cmd (cmd_name
, class_run
,
3261 &inferior_args_scratch
, _("\
3262 Set argument list to give program being debugged when it is started."), _("\
3263 Show argument list to give program being debugged when it is started."), _("\
3264 Follow this command with any number of args, to be passed to the program."),
3267 &setlist
, &showlist
);
3268 c
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
3269 gdb_assert (c
!= NULL
);
3270 set_cmd_completer (c
, filename_completer
);
3273 add_setshow_string_noescape_cmd (cmd_name
, class_run
,
3274 &inferior_cwd_scratch
, _("\
3275 Set the current working directory to be used when the inferior is started.\n\
3276 Changing this setting does not have any effect on inferiors that are\n\
3279 Show the current working directory that is used when the inferior is started."),
3281 Use this command to change the current working directory that will be used\n\
3282 when the inferior is started. This setting does not affect GDB's current\n\
3283 working directory."),
3286 &setlist
, &showlist
);
3287 c
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
3288 gdb_assert (c
!= NULL
);
3289 set_cmd_completer (c
, filename_completer
);
3291 c
= add_cmd ("environment", no_class
, environment_info
, _("\
3292 The environment to give the program, or one variable's value.\n\
3293 With an argument VAR, prints the value of environment variable VAR to\n\
3294 give the program being debugged. With no arguments, prints the entire\n\
3295 environment to be given to the program."), &showlist
);
3296 set_cmd_completer (c
, noop_completer
);
3298 add_prefix_cmd ("unset", no_class
, unset_command
,
3299 _("Complement to certain \"set\" commands."),
3300 &unsetlist
, "unset ", 0, &cmdlist
);
3302 c
= add_cmd ("environment", class_run
, unset_environment_command
, _("\
3303 Cancel environment variable VAR for the program.\n\
3304 This does not affect the program until the next \"run\" command."),
3306 set_cmd_completer (c
, noop_completer
);
3308 c
= add_cmd ("environment", class_run
, set_environment_command
, _("\
3309 Set environment variable value to give the program.\n\
3310 Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\
3311 VALUES of environment variables are uninterpreted strings.\n\
3312 This does not affect the program until the next \"run\" command."),
3314 set_cmd_completer (c
, noop_completer
);
3316 c
= add_com ("path", class_files
, path_command
, _("\
3317 Add directory DIR(s) to beginning of search path for object files.\n\
3318 $cwd in the path means the current working directory.\n\
3319 This path is equivalent to the $PATH shell variable. It is a list of\n\
3320 directories, separated by colons. These directories are searched to find\n\
3321 fully linked executable files and separately compiled object files as \
3323 set_cmd_completer (c
, filename_completer
);
3325 c
= add_cmd ("paths", no_class
, path_info
, _("\
3326 Current search path for finding object files.\n\
3327 $cwd in the path means the current working directory.\n\
3328 This path is equivalent to the $PATH shell variable. It is a list of\n\
3329 directories, separated by colons. These directories are searched to find\n\
3330 fully linked executable files and separately compiled object files as \
3333 set_cmd_completer (c
, noop_completer
);
3335 add_prefix_cmd ("kill", class_run
, kill_command
,
3336 _("Kill execution of program being debugged."),
3337 &killlist
, "kill ", 0, &cmdlist
);
3339 add_com ("attach", class_run
, attach_command
, _("\
3340 Attach to a process or file outside of GDB.\n\
3341 This command attaches to another target, of the same type as your last\n\
3342 \"target\" command (\"info files\" will show your target stack).\n\
3343 The command may take as argument a process id or a device file.\n\
3344 For a process id, you must have permission to send the process a signal,\n\
3345 and it must have the same effective uid as the debugger.\n\
3346 When using \"attach\" with a process id, the debugger finds the\n\
3347 program running in the process, looking first in the current working\n\
3348 directory, or (if not found there) using the source file search path\n\
3349 (see the \"directory\" command). You can also use the \"file\" command\n\
3350 to specify the program, and to load its symbol table."));
3352 add_prefix_cmd ("detach", class_run
, detach_command
, _("\
3353 Detach a process or file previously attached.\n\
3354 If a process, it is no longer traced, and it continues its execution. If\n\
3355 you were debugging a file, the file is closed and gdb no longer accesses it."),
3356 &detachlist
, "detach ", 0, &cmdlist
);
3358 add_com ("disconnect", class_run
, disconnect_command
, _("\
3359 Disconnect from a target.\n\
3360 The target will wait for another debugger to connect. Not available for\n\
3363 c
= add_com ("signal", class_run
, signal_command
, _("\
3364 Continue program with the specified signal.\n\
3365 Usage: signal SIGNAL\n\
3366 The SIGNAL argument is processed the same as the handle command.\n\
3368 An argument of \"0\" means continue the program without sending it a signal.\n\
3369 This is useful in cases where the program stopped because of a signal,\n\
3370 and you want to resume the program while discarding the signal.\n\
3372 In a multi-threaded program the signal is delivered to, or discarded from,\n\
3373 the current thread only."));
3374 set_cmd_completer (c
, signal_completer
);
3376 c
= add_com ("queue-signal", class_run
, queue_signal_command
, _("\
3377 Queue a signal to be delivered to the current thread when it is resumed.\n\
3378 Usage: queue-signal SIGNAL\n\
3379 The SIGNAL argument is processed the same as the handle command.\n\
3380 It is an error if the handling state of SIGNAL is \"nopass\".\n\
3382 An argument of \"0\" means remove any currently queued signal from\n\
3383 the current thread. This is useful in cases where the program stopped\n\
3384 because of a signal, and you want to resume it while discarding the signal.\n\
3386 In a multi-threaded program the signal is queued with, or discarded from,\n\
3387 the current thread only."));
3388 set_cmd_completer (c
, signal_completer
);
3390 add_com ("stepi", class_run
, stepi_command
, _("\
3391 Step one instruction exactly.\n\
3393 Argument N means step N times (or till program stops for another \
3395 add_com_alias ("si", "stepi", class_alias
, 0);
3397 add_com ("nexti", class_run
, nexti_command
, _("\
3398 Step one instruction, but proceed through subroutine calls.\n\
3400 Argument N means step N times (or till program stops for another \
3402 add_com_alias ("ni", "nexti", class_alias
, 0);
3404 add_com ("finish", class_run
, finish_command
, _("\
3405 Execute until selected stack frame returns.\n\
3407 Upon return, the value returned is printed and put in the value history."));
3408 add_com_alias ("fin", "finish", class_run
, 1);
3410 add_com ("next", class_run
, next_command
, _("\
3411 Step program, proceeding through subroutine calls.\n\
3413 Unlike \"step\", if the current source line calls a subroutine,\n\
3414 this command does not enter the subroutine, but instead steps over\n\
3415 the call, in effect treating it as a single source line."));
3416 add_com_alias ("n", "next", class_run
, 1);
3418 add_com ("step", class_run
, step_command
, _("\
3419 Step program until it reaches a different source line.\n\
3421 Argument N means step N times (or till program stops for another \
3423 add_com_alias ("s", "step", class_run
, 1);
3425 c
= add_com ("until", class_run
, until_command
, _("\
3426 Execute until the program reaches a source line greater than the current\n\
3427 or a specified location (same args as break command) within the current \
3429 set_cmd_completer (c
, location_completer
);
3430 add_com_alias ("u", "until", class_run
, 1);
3432 c
= add_com ("advance", class_run
, advance_command
, _("\
3433 Continue the program up to the given location (same form as args for break \
3435 Execution will also stop upon exit from the current stack frame."));
3436 set_cmd_completer (c
, location_completer
);
3438 c
= add_com ("jump", class_run
, jump_command
, _("\
3439 Continue program being debugged at specified line or address.\n\
3440 Usage: jump <location>\n\
3441 Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\
3442 for an address to start at."));
3443 set_cmd_completer (c
, location_completer
);
3444 add_com_alias ("j", "jump", class_run
, 1);
3446 add_com ("continue", class_run
, continue_command
, _("\
3447 Continue program being debugged, after signal or breakpoint.\n\
3448 Usage: continue [N]\n\
3449 If proceeding from breakpoint, a number N may be used as an argument,\n\
3450 which means to set the ignore count of that breakpoint to N - 1 (so that\n\
3451 the breakpoint won't break until the Nth time it is reached).\n\
3453 If non-stop mode is enabled, continue only the current thread,\n\
3454 otherwise all the threads in the program are continued. To \n\
3455 continue all stopped threads in non-stop mode, use the -a option.\n\
3456 Specifying -a and an ignore count simultaneously is an error."));
3457 add_com_alias ("c", "cont", class_run
, 1);
3458 add_com_alias ("fg", "cont", class_run
, 1);
3460 c
= add_com ("run", class_run
, run_command
, _("\
3461 Start debugged program.\n"
3463 set_cmd_completer (c
, filename_completer
);
3464 add_com_alias ("r", "run", class_run
, 1);
3466 c
= add_com ("start", class_run
, start_command
, _("\
3467 Start the debugged program stopping at the beginning of the main procedure.\n"
3469 set_cmd_completer (c
, filename_completer
);
3471 c
= add_com ("starti", class_run
, starti_command
, _("\
3472 Start the debugged program stopping at the first instruction.\n"
3474 set_cmd_completer (c
, filename_completer
);
3476 add_com ("interrupt", class_run
, interrupt_command
,
3477 _("Interrupt the execution of the debugged program.\n\
3478 If non-stop mode is enabled, interrupt only the current thread,\n\
3479 otherwise all the threads in the program are stopped. To \n\
3480 interrupt all running threads in non-stop mode, use the -a option."));
3482 c
= add_info ("registers", info_registers_command
, _("\
3483 List of integer registers and their contents, for selected stack frame.\n\
3484 One or more register names as argument means describe the given registers.\n\
3485 One or more register group names as argument means describe the registers\n\
3486 in the named register groups."));
3487 add_info_alias ("r", "registers", 1);
3488 set_cmd_completer (c
, reg_or_group_completer
);
3490 c
= add_info ("all-registers", info_all_registers_command
, _("\
3491 List of all registers and their contents, for selected stack frame.\n\
3492 One or more register names as argument means describe the given registers.\n\
3493 One or more register group names as argument means describe the registers\n\
3494 in the named register groups."));
3495 set_cmd_completer (c
, reg_or_group_completer
);
3497 add_info ("program", info_program_command
,
3498 _("Execution status of the program."));
3500 add_info ("float", info_float_command
,
3501 _("Print the status of the floating point unit\n"));
3503 add_info ("vector", info_vector_command
,
3504 _("Print the status of the vector unit\n"));
3506 add_prefix_cmd ("proc", class_info
, info_proc_cmd
,
3508 Show /proc process information about any running process.\n\
3509 Specify any process id, or use the program being debugged by default."),
3510 &info_proc_cmdlist
, "info proc ",
3511 1/*allow-unknown*/, &infolist
);
3513 add_cmd ("mappings", class_info
, info_proc_cmd_mappings
, _("\
3514 List of mapped memory regions."),
3515 &info_proc_cmdlist
);
3517 add_cmd ("stat", class_info
, info_proc_cmd_stat
, _("\
3518 List process info from /proc/PID/stat."),
3519 &info_proc_cmdlist
);
3521 add_cmd ("status", class_info
, info_proc_cmd_status
, _("\
3522 List process info from /proc/PID/status."),
3523 &info_proc_cmdlist
);
3525 add_cmd ("cwd", class_info
, info_proc_cmd_cwd
, _("\
3526 List current working directory of the process."),
3527 &info_proc_cmdlist
);
3529 add_cmd ("cmdline", class_info
, info_proc_cmd_cmdline
, _("\
3530 List command line arguments of the process."),
3531 &info_proc_cmdlist
);
3533 add_cmd ("exe", class_info
, info_proc_cmd_exe
, _("\
3534 List absolute filename for executable of the process."),
3535 &info_proc_cmdlist
);
3537 add_cmd ("all", class_info
, info_proc_cmd_all
, _("\
3538 List all available /proc info."),
3539 &info_proc_cmdlist
);