1 /* Memory-access and commands for "inferior" process, for GDB.
3 Copyright (C) 1986-2014 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
21 #include "arch-utils.h"
36 #include "completer.h"
38 #include "event-top.h"
39 #include "parser-defs.h"
41 #include "reggroups.h"
45 #include "gdb_assert.h"
47 #include "target-descriptions.h"
48 #include "user-regs.h"
49 #include "exceptions.h"
50 #include "cli/cli-decode.h"
51 #include "gdbthread.h"
53 #include "inline-frame.h"
54 #include "tracepoint.h"
56 #include "continuations.h"
58 #include "cli/cli-utils.h"
60 /* Local functions: */
62 static void nofp_registers_info (char *, int);
64 static void print_return_value (struct value
*function
,
65 struct type
*value_type
);
67 static void until_next_command (int);
69 static void until_command (char *, int);
71 static void path_info (char *, int);
73 static void path_command (char *, int);
75 static void unset_command (char *, int);
77 static void float_info (char *, int);
79 static void disconnect_command (char *, int);
81 static void unset_environment_command (char *, int);
83 static void set_environment_command (char *, int);
85 static void environment_info (char *, int);
87 static void program_info (char *, int);
89 static void finish_command (char *, int);
91 static void signal_command (char *, int);
93 static void jump_command (char *, int);
95 static void step_1 (int, int, char *);
96 static void step_once (int skip_subroutines
, int single_inst
,
97 int count
, int thread
);
99 static void next_command (char *, int);
101 static void step_command (char *, int);
103 static void run_command (char *, int);
105 static void run_no_args_command (char *args
, int from_tty
);
107 static void go_command (char *line_no
, int from_tty
);
109 static int strip_bg_char (char **);
111 void _initialize_infcmd (void);
113 #define ERROR_NO_INFERIOR \
114 if (!target_has_execution) error (_("The program is not being run."));
116 /* Scratch area where string containing arguments to give to the
117 program will be stored by 'set args'. As soon as anything is
118 stored, notice_args_set will move it into per-inferior storage.
119 Arguments are separated by spaces. Empty string (pointer to '\0')
122 static char *inferior_args_scratch
;
124 /* Scratch area where 'set inferior-tty' will store user-provided value.
125 We'll immediate copy it into per-inferior storage. */
127 static char *inferior_io_terminal_scratch
;
129 /* Pid of our debugged inferior, or 0 if no inferior now.
130 Since various parts of infrun.c test this to see whether there is a program
131 being debugged it should be nonzero (currently 3 is used) for remote
134 ptid_t inferior_ptid
;
136 /* Address at which inferior stopped. */
140 /* Nonzero if stopped due to completion of a stack dummy routine. */
142 enum stop_stack_kind stop_stack_dummy
;
144 /* Nonzero if stopped due to a random (unexpected) signal in inferior
147 int stopped_by_random_signal
;
149 /* See inferior.h. */
151 int startup_with_shell
= 1;
154 /* Accessor routines. */
156 /* Set the io terminal for the current inferior. Ownership of
157 TERMINAL_NAME is not transferred. */
160 set_inferior_io_terminal (const char *terminal_name
)
162 xfree (current_inferior ()->terminal
);
163 current_inferior ()->terminal
= terminal_name
? xstrdup (terminal_name
) : 0;
167 get_inferior_io_terminal (void)
169 return current_inferior ()->terminal
;
173 set_inferior_tty_command (char *args
, int from_tty
,
174 struct cmd_list_element
*c
)
176 /* CLI has assigned the user-provided value to inferior_io_terminal_scratch.
177 Now route it to current inferior. */
178 set_inferior_io_terminal (inferior_io_terminal_scratch
);
182 show_inferior_tty_command (struct ui_file
*file
, int from_tty
,
183 struct cmd_list_element
*c
, const char *value
)
185 /* Note that we ignore the passed-in value in favor of computing it
187 const char *inferior_io_terminal
= get_inferior_io_terminal ();
189 if (inferior_io_terminal
== NULL
)
190 inferior_io_terminal
= "";
191 fprintf_filtered (gdb_stdout
,
192 _("Terminal for future runs of program being debugged "
193 "is \"%s\".\n"), inferior_io_terminal
);
197 get_inferior_args (void)
199 if (current_inferior ()->argc
!= 0)
203 n
= construct_inferior_arguments (current_inferior ()->argc
,
204 current_inferior ()->argv
);
205 set_inferior_args (n
);
209 if (current_inferior ()->args
== NULL
)
210 current_inferior ()->args
= xstrdup ("");
212 return current_inferior ()->args
;
215 /* Set the arguments for the current inferior. Ownership of
216 NEWARGS is not transferred. */
219 set_inferior_args (char *newargs
)
221 xfree (current_inferior ()->args
);
222 current_inferior ()->args
= newargs
? xstrdup (newargs
) : NULL
;
223 current_inferior ()->argc
= 0;
224 current_inferior ()->argv
= 0;
228 set_inferior_args_vector (int argc
, char **argv
)
230 current_inferior ()->argc
= argc
;
231 current_inferior ()->argv
= argv
;
234 /* Notice when `set args' is run. */
236 set_args_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
238 /* CLI has assigned the user-provided value to inferior_args_scratch.
239 Now route it to current inferior. */
240 set_inferior_args (inferior_args_scratch
);
243 /* Notice when `show args' is run. */
245 show_args_command (struct ui_file
*file
, int from_tty
,
246 struct cmd_list_element
*c
, const char *value
)
248 /* Note that we ignore the passed-in value in favor of computing it
250 deprecated_show_value_hack (file
, from_tty
, c
, get_inferior_args ());
254 /* Compute command-line string given argument vector. This does the
255 same shell processing as fork_inferior. */
257 construct_inferior_arguments (int argc
, char **argv
)
261 if (startup_with_shell
)
264 /* This holds all the characters considered special to the
266 char *special
= "\"!&*|[]{}<>?`~^=;, \t\n";
267 const char quote
= '"';
269 /* This holds all the characters considered special to the
270 typical Unix shells. We include `^' because the SunOS
271 /bin/sh treats it as a synonym for `|'. */
272 char *special
= "\"!#$&*()\\|[]{}<>?'`~^; \t\n";
273 const char quote
= '\'';
279 /* We over-compute the size. It shouldn't matter. */
280 for (i
= 0; i
< argc
; ++i
)
281 length
+= 3 * strlen (argv
[i
]) + 1 + 2 * (argv
[i
][0] == '\0');
283 result
= (char *) xmalloc (length
);
286 for (i
= 0; i
< argc
; ++i
)
291 /* Need to handle empty arguments specially. */
292 if (argv
[i
][0] == '\0')
302 if (strpbrk (argv
[i
], special
))
308 for (cp
= argv
[i
]; *cp
; ++cp
)
312 /* A newline cannot be quoted with a backslash (it
313 just disappears), only by putting it inside
324 if (strchr (special
, *cp
) != NULL
)
340 /* In this case we can't handle arguments that contain spaces,
341 tabs, or newlines -- see breakup_args(). */
345 for (i
= 0; i
< argc
; ++i
)
347 char *cp
= strchr (argv
[i
], ' ');
349 cp
= strchr (argv
[i
], '\t');
351 cp
= strchr (argv
[i
], '\n');
353 error (_("can't handle command-line "
354 "argument containing whitespace"));
355 length
+= strlen (argv
[i
]) + 1;
358 result
= (char *) xmalloc (length
);
360 for (i
= 0; i
< argc
; ++i
)
363 strcat (result
, " ");
364 strcat (result
, argv
[i
]);
372 /* This function detects whether or not a '&' character (indicating
373 background execution) has been added as *the last* of the arguments ARGS
374 of a command. If it has, it removes it and returns 1. Otherwise it
375 does nothing and returns 0. */
377 strip_bg_char (char **args
)
381 p
= strchr (*args
, '&');
385 if (p
== (*args
+ strlen (*args
) - 1))
387 if (strlen (*args
) > 1)
391 while (*p
== ' ' || *p
== '\t');
402 /* Common actions to take after creating any sort of inferior, by any
403 means (running, attaching, connecting, et cetera). The target
404 should be stopped. */
407 post_create_inferior (struct target_ops
*target
, int from_tty
)
409 volatile struct gdb_exception ex
;
411 /* Be sure we own the terminal in case write operations are performed. */
412 target_terminal_ours ();
414 /* If the target hasn't taken care of this already, do it now.
415 Targets which need to access registers during to_open,
416 to_create_inferior, or to_attach should do it earlier; but many
418 target_find_description ();
420 /* Now that we know the register layout, retrieve current PC. But
421 if the PC is unavailable (e.g., we're opening a core file with
422 missing registers info), ignore it. */
424 TRY_CATCH (ex
, RETURN_MASK_ERROR
)
426 stop_pc
= regcache_read_pc (get_current_regcache ());
428 if (ex
.reason
< 0 && ex
.error
!= NOT_AVAILABLE_ERROR
)
429 throw_exception (ex
);
433 const unsigned solib_add_generation
434 = current_program_space
->solib_add_generation
;
436 /* Create the hooks to handle shared library load and unload
438 solib_create_inferior_hook (from_tty
);
440 if (current_program_space
->solib_add_generation
== solib_add_generation
)
442 /* The platform-specific hook should load initial shared libraries,
443 but didn't. FROM_TTY will be incorrectly 0 but such solib
444 targets should be fixed anyway. Call it only after the solib
445 target has been initialized by solib_create_inferior_hook. */
448 warning (_("platform-specific solib_create_inferior_hook did "
449 "not load initial shared libraries."));
451 /* If the solist is global across processes, there's no need to
453 if (!gdbarch_has_global_solist (target_gdbarch ()))
454 solib_add (NULL
, 0, target
, auto_solib_add
);
458 /* If the user sets watchpoints before execution having started,
459 then she gets software watchpoints, because GDB can't know which
460 target will end up being pushed, or if it supports hardware
461 watchpoints or not. breakpoint_re_set takes care of promoting
462 watchpoints to hardware watchpoints if possible, however, if this
463 new inferior doesn't load shared libraries or we don't pull in
464 symbols from any other source on this target/arch,
465 breakpoint_re_set is never called. Call it now so that software
466 watchpoints get a chance to be promoted to hardware watchpoints
467 if the now pushed target supports hardware watchpoints. */
468 breakpoint_re_set ();
470 observer_notify_inferior_created (target
, from_tty
);
473 /* Kill the inferior if already running. This function is designed
474 to be called when we are about to start the execution of the program
475 from the beginning. Ask the user to confirm that he wants to restart
476 the program being debugged when FROM_TTY is non-null. */
479 kill_if_already_running (int from_tty
)
481 if (! ptid_equal (inferior_ptid
, null_ptid
) && target_has_execution
)
483 /* Bail out before killing the program if we will not be able to
485 target_require_runnable ();
488 && !query (_("The program being debugged has been started already.\n\
489 Start it from the beginning? ")))
490 error (_("Program not restarted."));
495 /* Prepare for execution command. TARGET is the target that will run
496 the command. BACKGROUND determines whether this is a foreground
497 (synchronous) or background (asynchronous) command. */
500 prepare_execution_command (struct target_ops
*target
, int background
)
502 /* If we get a request for running in the bg but the target
503 doesn't support it, error out. */
504 if (background
&& !target
->to_can_async_p (target
))
505 error (_("Asynchronous execution not supported on this target."));
507 /* If we don't get a request of running in the bg, then we need
508 to simulate synchronous (fg) execution. */
509 if (!background
&& target
->to_can_async_p (target
))
511 /* Simulate synchronous execution. Note no cleanup is necessary
512 for this. stdin is re-enabled whenever an error reaches the
514 async_disable_stdin ();
518 /* Implement the "run" command. If TBREAK_AT_MAIN is set, then insert
519 a temporary breakpoint at the begining of the main program before
520 running the program. */
523 run_command_1 (char *args
, int from_tty
, int tbreak_at_main
)
526 struct cleanup
*old_chain
;
528 struct ui_out
*uiout
= current_uiout
;
529 struct target_ops
*run_target
;
534 kill_if_already_running (from_tty
);
536 init_wait_for_inferior ();
537 clear_breakpoint_hit_counts ();
539 /* Clean up any leftovers from other runs. Some other things from
540 this function should probably be moved into target_pre_inferior. */
541 target_pre_inferior (from_tty
);
543 /* The comment here used to read, "The exec file is re-read every
544 time we do a generic_mourn_inferior, so we just have to worry
545 about the symbol file." The `generic_mourn_inferior' function
546 gets called whenever the program exits. However, suppose the
547 program exits, and *then* the executable file changes? We need
548 to check again here. Since reopen_exec_file doesn't do anything
549 if the timestamp hasn't changed, I don't see the harm. */
554 async_exec
= strip_bg_char (&args
);
556 /* Do validation and preparation before possibly changing anything
559 run_target
= find_run_target ();
561 prepare_execution_command (run_target
, async_exec
);
563 if (non_stop
&& !run_target
->to_supports_non_stop (run_target
))
564 error (_("The target does not support running in non-stop mode."));
566 /* Done. Can now set breakpoints, change inferior args, etc. */
568 /* Insert the temporary breakpoint if a location was specified. */
570 tbreak_command (main_name (), 0);
572 exec_file
= (char *) get_exec_file (0);
574 /* We keep symbols from add-symbol-file, on the grounds that the
575 user might want to add some symbols before running the program
576 (right?). But sometimes (dynamic loading where the user manually
577 introduces the new symbols with add-symbol-file), the code which
578 the symbols describe does not persist between runs. Currently
579 the user has to manually nuke all symbols between runs if they
580 want them to go away (PR 2207). This is probably reasonable. */
582 /* If there were other args, beside '&', process them. */
584 set_inferior_args (args
);
588 ui_out_field_string (uiout
, NULL
, "Starting program");
589 ui_out_text (uiout
, ": ");
591 ui_out_field_string (uiout
, "execfile", exec_file
);
592 ui_out_spaces (uiout
, 1);
593 /* We call get_inferior_args() because we might need to compute
595 ui_out_field_string (uiout
, "infargs", get_inferior_args ());
596 ui_out_text (uiout
, "\n");
597 ui_out_flush (uiout
);
600 /* We call get_inferior_args() because we might need to compute
602 run_target
->to_create_inferior (run_target
, exec_file
, get_inferior_args (),
603 environ_vector (current_inferior ()->environment
),
605 /* to_create_inferior should push the target, so after this point we
606 shouldn't refer to run_target again. */
609 /* We're starting off a new process. When we get out of here, in
610 non-stop mode, finish the state of all threads of that process,
611 but leave other threads alone, as they may be stopped in internal
612 events --- the frontend shouldn't see them as stopped. In
613 all-stop, always finish the state of all threads, as we may be
614 resuming more than just the new process. */
616 ptid
= pid_to_ptid (ptid_get_pid (inferior_ptid
));
618 ptid
= minus_one_ptid
;
619 old_chain
= make_cleanup (finish_thread_state_cleanup
, &ptid
);
621 /* Pass zero for FROM_TTY, because at this point the "run" command
622 has done its thing; now we are setting up the running program. */
623 post_create_inferior (¤t_target
, 0);
625 /* Start the target running. Do not use -1 continuation as it would skip
626 breakpoint right at the entry point. */
627 proceed (regcache_read_pc (get_current_regcache ()), GDB_SIGNAL_0
, 0);
629 /* Since there was no error, there's no need to finish the thread
631 discard_cleanups (old_chain
);
635 run_command (char *args
, int from_tty
)
637 run_command_1 (args
, from_tty
, 0);
641 run_no_args_command (char *args
, int from_tty
)
643 set_inferior_args ("");
647 /* Start the execution of the program up until the beginning of the main
651 start_command (char *args
, int from_tty
)
653 /* Some languages such as Ada need to search inside the program
654 minimal symbols for the location where to put the temporary
655 breakpoint before starting. */
656 if (!have_minimal_symbols ())
657 error (_("No symbol table loaded. Use the \"file\" command."));
659 /* Run the program until reaching the main procedure... */
660 run_command_1 (args
, from_tty
, 1);
664 proceed_thread_callback (struct thread_info
*thread
, void *arg
)
666 /* We go through all threads individually instead of compressing
667 into a single target `resume_all' request, because some threads
668 may be stopped in internal breakpoints/events, or stopped waiting
669 for its turn in the displaced stepping queue (that is, they are
670 running && !executing). The target side has no idea about why
671 the thread is stopped, so a `resume_all' command would resume too
672 much. If/when GDB gains a way to tell the target `hold this
673 thread stopped until I say otherwise', then we can optimize
675 if (!is_stopped (thread
->ptid
))
678 switch_to_thread (thread
->ptid
);
679 clear_proceed_status ();
680 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
685 ensure_valid_thread (void)
687 if (ptid_equal (inferior_ptid
, null_ptid
)
688 || is_exited (inferior_ptid
))
689 error (_("Cannot execute this command without a live selected thread."));
692 /* If the user is looking at trace frames, any resumption of execution
693 is likely to mix up recorded and live target data. So simply
694 disallow those commands. */
697 ensure_not_tfind_mode (void)
699 if (get_traceframe_number () >= 0)
700 error (_("Cannot execute this command while looking at trace frames."));
703 /* Throw an error indicating the current thread is running. */
706 error_is_running (void)
708 error (_("Cannot execute this command while "
709 "the selected thread is running."));
712 /* Calls error_is_running if the current thread is running. */
715 ensure_not_running (void)
717 if (is_running (inferior_ptid
))
722 continue_1 (int all_threads
)
725 ensure_not_tfind_mode ();
727 if (non_stop
&& all_threads
)
729 /* Don't error out if the current thread is running, because
730 there may be other stopped threads. */
731 struct cleanup
*old_chain
;
733 /* Backup current thread and selected frame. */
734 old_chain
= make_cleanup_restore_current_thread ();
736 iterate_over_threads (proceed_thread_callback
, NULL
);
738 /* Restore selected ptid. */
739 do_cleanups (old_chain
);
743 ensure_valid_thread ();
744 ensure_not_running ();
745 clear_proceed_status ();
746 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
750 /* continue [-a] [proceed-count] [&] */
752 continue_command (char *args
, int from_tty
)
758 /* Find out whether we must run in the background. */
760 async_exec
= strip_bg_char (&args
);
762 prepare_execution_command (¤t_target
, async_exec
);
766 if (strncmp (args
, "-a", sizeof ("-a") - 1) == 0)
769 args
+= sizeof ("-a") - 1;
775 if (!non_stop
&& all_threads
)
776 error (_("`-a' is meaningless in all-stop mode."));
778 if (args
!= NULL
&& all_threads
)
779 error (_("Can't resume all threads and specify "
780 "proceed count simultaneously."));
782 /* If we have an argument left, set proceed count of breakpoint we
789 struct thread_info
*tp
;
792 tp
= find_thread_ptid (inferior_ptid
);
796 struct target_waitstatus ws
;
798 get_last_target_status (&last_ptid
, &ws
);
799 tp
= find_thread_ptid (last_ptid
);
802 bs
= tp
->control
.stop_bpstat
;
804 while ((stat
= bpstat_num (&bs
, &num
)) != 0)
807 set_ignore_count (num
,
808 parse_and_eval_long (args
) - 1,
810 /* set_ignore_count prints a message ending with a period.
811 So print two spaces before "Continuing.". */
813 printf_filtered (" ");
817 if (!stopped
&& from_tty
)
820 ("Not stopped at any breakpoint; argument ignored.\n");
825 printf_filtered (_("Continuing.\n"));
827 continue_1 (all_threads
);
830 /* Record the starting point of a "step" or "next" command. */
833 set_step_frame (void)
835 struct symtab_and_line sal
;
837 find_frame_sal (get_current_frame (), &sal
);
838 set_step_info (get_current_frame (), sal
);
841 /* Step until outside of current statement. */
844 step_command (char *count_string
, int from_tty
)
846 step_1 (0, 0, count_string
);
849 /* Likewise, but skip over subroutine calls as if single instructions. */
852 next_command (char *count_string
, int from_tty
)
854 step_1 (1, 0, count_string
);
857 /* Likewise, but step only one instruction. */
860 stepi_command (char *count_string
, int from_tty
)
862 step_1 (0, 1, count_string
);
866 nexti_command (char *count_string
, int from_tty
)
868 step_1 (1, 1, count_string
);
872 delete_longjmp_breakpoint_cleanup (void *arg
)
874 int thread
= * (int *) arg
;
875 delete_longjmp_breakpoint (thread
);
879 step_1 (int skip_subroutines
, int single_inst
, char *count_string
)
882 struct cleanup
*cleanups
= make_cleanup (null_cleanup
, NULL
);
887 ensure_not_tfind_mode ();
888 ensure_valid_thread ();
889 ensure_not_running ();
892 async_exec
= strip_bg_char (&count_string
);
894 prepare_execution_command (¤t_target
, async_exec
);
896 count
= count_string
? parse_and_eval_long (count_string
) : 1;
898 if (!single_inst
|| skip_subroutines
) /* Leave si command alone. */
900 struct thread_info
*tp
= inferior_thread ();
902 if (in_thread_list (inferior_ptid
))
903 thread
= pid_to_thread_id (inferior_ptid
);
905 set_longjmp_breakpoint (tp
, get_frame_id (get_current_frame ()));
907 make_cleanup (delete_longjmp_breakpoint_cleanup
, &thread
);
910 /* In synchronous case, all is well; each step_once call will step once. */
911 if (!target_can_async_p ())
913 for (; count
> 0; count
--)
915 step_once (skip_subroutines
, single_inst
, count
, thread
);
917 if (!target_has_execution
)
921 struct thread_info
*tp
= inferior_thread ();
923 if (!tp
->control
.stop_step
|| !tp
->step_multi
)
925 /* If we stopped for some reason that is not stepping
926 there are no further steps to make. */
933 do_cleanups (cleanups
);
937 /* In the case of an asynchronous target things get complicated;
938 do only one step for now, before returning control to the
939 event loop. Let the continuation figure out how many other
940 steps we need to do, and handle them one at the time, through
942 step_once (skip_subroutines
, single_inst
, count
, thread
);
944 /* We are running, and the continuation is installed. It will
945 disable the longjmp breakpoint as appropriate. */
946 discard_cleanups (cleanups
);
950 struct step_1_continuation_args
953 int skip_subroutines
;
958 /* Called after we are done with one step operation, to check whether
959 we need to step again, before we print the prompt and return control
960 to the user. If count is > 1, we will need to do one more call to
961 proceed(), via step_once(). Basically it is like step_once and
962 step_1_continuation are co-recursive. */
964 step_1_continuation (void *args
, int err
)
966 struct step_1_continuation_args
*a
= args
;
968 if (target_has_execution
)
970 struct thread_info
*tp
;
972 tp
= inferior_thread ();
974 && tp
->step_multi
&& tp
->control
.stop_step
)
976 /* There are more steps to make, and we did stop due to
977 ending a stepping range. Do another step. */
978 step_once (a
->skip_subroutines
, a
->single_inst
,
979 a
->count
- 1, a
->thread
);
985 /* We either hit an error, or stopped for some reason that is
986 not stepping, or there are no further steps to make.
988 if (!a
->single_inst
|| a
->skip_subroutines
)
989 delete_longjmp_breakpoint (a
->thread
);
992 /* Do just one step operation. This is useful to implement the 'step
993 n' kind of commands. In case of asynchronous targets, we will have
994 to set up a continuation to be done after the target stops (after
995 this one step). For synch targets, the caller handles further
999 step_once (int skip_subroutines
, int single_inst
, int count
, int thread
)
1001 struct frame_info
*frame
= get_current_frame ();
1005 /* Don't assume THREAD is a valid thread id. It is set to -1 if
1006 the longjmp breakpoint was not required. Use the
1007 INFERIOR_PTID thread instead, which is the same thread when
1009 struct thread_info
*tp
= inferior_thread ();
1011 clear_proceed_status ();
1018 /* Step at an inlined function behaves like "down". */
1019 if (!skip_subroutines
1020 && inline_skipped_frames (inferior_ptid
))
1024 /* Pretend that we've ran. */
1025 resume_ptid
= user_visible_resume_ptid (1);
1026 set_running (resume_ptid
, 1);
1028 step_into_inline_frame (inferior_ptid
);
1030 step_once (skip_subroutines
, single_inst
, count
- 1, thread
);
1033 /* Pretend that we've stopped. */
1036 if (target_can_async_p ())
1037 inferior_event_handler (INF_EXEC_COMPLETE
, NULL
);
1042 pc
= get_frame_pc (frame
);
1043 find_pc_line_pc_range (pc
,
1044 &tp
->control
.step_range_start
,
1045 &tp
->control
.step_range_end
);
1047 tp
->control
.may_range_step
= 1;
1049 /* If we have no line info, switch to stepi mode. */
1050 if (tp
->control
.step_range_end
== 0 && step_stop_if_no_debug
)
1052 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1053 tp
->control
.may_range_step
= 0;
1055 else if (tp
->control
.step_range_end
== 0)
1059 if (find_pc_partial_function (pc
, &name
,
1060 &tp
->control
.step_range_start
,
1061 &tp
->control
.step_range_end
) == 0)
1062 error (_("Cannot find bounds of current function"));
1064 target_terminal_ours ();
1065 printf_filtered (_("Single stepping until exit from function %s,"
1066 "\nwhich has no line number information.\n"),
1072 /* Say we are stepping, but stop after one insn whatever it does. */
1073 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1074 if (!skip_subroutines
)
1076 Don't step over function calls, not even to functions lacking
1078 tp
->control
.step_over_calls
= STEP_OVER_NONE
;
1081 if (skip_subroutines
)
1082 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1084 tp
->step_multi
= (count
> 1);
1085 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 1);
1087 /* For async targets, register a continuation to do any
1088 additional steps. For sync targets, the caller will handle
1089 further stepping. */
1090 if (target_can_async_p ())
1092 struct step_1_continuation_args
*args
;
1094 args
= xmalloc (sizeof (*args
));
1095 args
->skip_subroutines
= skip_subroutines
;
1096 args
->single_inst
= single_inst
;
1097 args
->count
= count
;
1098 args
->thread
= thread
;
1100 add_intermediate_continuation (tp
, step_1_continuation
, args
, xfree
);
1106 /* Continue program at specified address. */
1109 jump_command (char *arg
, int from_tty
)
1111 struct gdbarch
*gdbarch
= get_current_arch ();
1113 struct symtabs_and_lines sals
;
1114 struct symtab_and_line sal
;
1120 ensure_not_tfind_mode ();
1121 ensure_valid_thread ();
1122 ensure_not_running ();
1124 /* Find out whether we must run in the background. */
1126 async_exec
= strip_bg_char (&arg
);
1128 prepare_execution_command (¤t_target
, async_exec
);
1131 error_no_arg (_("starting address"));
1133 sals
= decode_line_with_last_displayed (arg
, DECODE_LINE_FUNFIRSTLINE
);
1134 if (sals
.nelts
!= 1)
1136 error (_("Unreasonable jump request"));
1142 if (sal
.symtab
== 0 && sal
.pc
== 0)
1143 error (_("No source file has been specified."));
1145 resolve_sal_pc (&sal
); /* May error out. */
1147 /* See if we are trying to jump to another function. */
1148 fn
= get_frame_function (get_current_frame ());
1149 sfn
= find_pc_function (sal
.pc
);
1150 if (fn
!= NULL
&& sfn
!= fn
)
1152 if (!query (_("Line %d is not in `%s'. Jump anyway? "), sal
.line
,
1153 SYMBOL_PRINT_NAME (fn
)))
1155 error (_("Not confirmed."));
1162 fixup_symbol_section (sfn
, 0);
1163 if (section_is_overlay (SYMBOL_OBJ_SECTION (SYMBOL_OBJFILE (sfn
), sfn
)) &&
1164 !section_is_mapped (SYMBOL_OBJ_SECTION (SYMBOL_OBJFILE (sfn
), sfn
)))
1166 if (!query (_("WARNING!!! Destination is in "
1167 "unmapped overlay! Jump anyway? ")))
1169 error (_("Not confirmed."));
1179 printf_filtered (_("Continuing at "));
1180 fputs_filtered (paddress (gdbarch
, addr
), gdb_stdout
);
1181 printf_filtered (".\n");
1184 clear_proceed_status ();
1185 proceed (addr
, GDB_SIGNAL_0
, 0);
1189 /* Go to line or address in current procedure. */
1191 go_command (char *line_no
, int from_tty
)
1193 if (line_no
== (char *) NULL
|| !*line_no
)
1194 printf_filtered (_("Usage: go <location>\n"));
1197 tbreak_command (line_no
, from_tty
);
1198 jump_command (line_no
, from_tty
);
1203 /* Continue program giving it specified signal. */
1206 signal_command (char *signum_exp
, int from_tty
)
1208 enum gdb_signal oursig
;
1211 dont_repeat (); /* Too dangerous. */
1213 ensure_not_tfind_mode ();
1214 ensure_valid_thread ();
1215 ensure_not_running ();
1217 /* Find out whether we must run in the background. */
1218 if (signum_exp
!= NULL
)
1219 async_exec
= strip_bg_char (&signum_exp
);
1221 prepare_execution_command (¤t_target
, async_exec
);
1224 error_no_arg (_("signal number"));
1226 /* It would be even slicker to make signal names be valid expressions,
1227 (the type could be "enum $signal" or some such), then the user could
1228 assign them to convenience variables. */
1229 oursig
= gdb_signal_from_name (signum_exp
);
1231 if (oursig
== GDB_SIGNAL_UNKNOWN
)
1233 /* No, try numeric. */
1234 int num
= parse_and_eval_long (signum_exp
);
1237 oursig
= GDB_SIGNAL_0
;
1239 oursig
= gdb_signal_from_command (num
);
1244 if (oursig
== GDB_SIGNAL_0
)
1245 printf_filtered (_("Continuing with no signal.\n"));
1247 printf_filtered (_("Continuing with signal %s.\n"),
1248 gdb_signal_to_name (oursig
));
1251 clear_proceed_status ();
1252 proceed ((CORE_ADDR
) -1, oursig
, 0);
1255 /* Continuation args to be passed to the "until" command
1257 struct until_next_continuation_args
1259 /* The thread that was current when the command was executed. */
1263 /* A continuation callback for until_next_command. */
1266 until_next_continuation (void *arg
, int err
)
1268 struct until_next_continuation_args
*a
= arg
;
1270 delete_longjmp_breakpoint (a
->thread
);
1273 /* Proceed until we reach a different source line with pc greater than
1274 our current one or exit the function. We skip calls in both cases.
1276 Note that eventually this command should probably be changed so
1277 that only source lines are printed out when we hit the breakpoint
1278 we set. This may involve changes to wait_for_inferior and the
1279 proceed status code. */
1282 until_next_command (int from_tty
)
1284 struct frame_info
*frame
;
1286 struct symbol
*func
;
1287 struct symtab_and_line sal
;
1288 struct thread_info
*tp
= inferior_thread ();
1289 int thread
= tp
->num
;
1290 struct cleanup
*old_chain
;
1292 clear_proceed_status ();
1295 frame
= get_current_frame ();
1297 /* Step until either exited from this function or greater
1298 than the current line (if in symbolic section) or pc (if
1301 pc
= get_frame_pc (frame
);
1302 func
= find_pc_function (pc
);
1306 struct bound_minimal_symbol msymbol
= lookup_minimal_symbol_by_pc (pc
);
1308 if (msymbol
.minsym
== NULL
)
1309 error (_("Execution is not within a known function."));
1311 tp
->control
.step_range_start
= BMSYMBOL_VALUE_ADDRESS (msymbol
);
1312 tp
->control
.step_range_end
= pc
;
1316 sal
= find_pc_line (pc
, 0);
1318 tp
->control
.step_range_start
= BLOCK_START (SYMBOL_BLOCK_VALUE (func
));
1319 tp
->control
.step_range_end
= sal
.end
;
1321 tp
->control
.may_range_step
= 1;
1323 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1325 tp
->step_multi
= 0; /* Only one call to proceed */
1327 set_longjmp_breakpoint (tp
, get_frame_id (frame
));
1328 old_chain
= make_cleanup (delete_longjmp_breakpoint_cleanup
, &thread
);
1330 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 1);
1332 if (target_can_async_p () && is_running (inferior_ptid
))
1334 struct until_next_continuation_args
*cont_args
;
1336 discard_cleanups (old_chain
);
1337 cont_args
= XNEW (struct until_next_continuation_args
);
1338 cont_args
->thread
= inferior_thread ()->num
;
1340 add_continuation (tp
, until_next_continuation
, cont_args
, xfree
);
1343 do_cleanups (old_chain
);
1347 until_command (char *arg
, int from_tty
)
1352 ensure_not_tfind_mode ();
1353 ensure_valid_thread ();
1354 ensure_not_running ();
1356 /* Find out whether we must run in the background. */
1358 async_exec
= strip_bg_char (&arg
);
1360 prepare_execution_command (¤t_target
, async_exec
);
1363 until_break_command (arg
, from_tty
, 0);
1365 until_next_command (from_tty
);
1369 advance_command (char *arg
, int from_tty
)
1374 ensure_not_tfind_mode ();
1375 ensure_valid_thread ();
1376 ensure_not_running ();
1379 error_no_arg (_("a location"));
1381 /* Find out whether we must run in the background. */
1383 async_exec
= strip_bg_char (&arg
);
1385 prepare_execution_command (¤t_target
, async_exec
);
1387 until_break_command (arg
, from_tty
, 1);
1390 /* Return the value of the result of a function at the end of a 'finish'
1394 get_return_value (struct value
*function
, struct type
*value_type
)
1396 struct regcache
*stop_regs
= stop_registers
;
1397 struct gdbarch
*gdbarch
;
1398 struct value
*value
;
1399 struct cleanup
*cleanup
= make_cleanup (null_cleanup
, NULL
);
1401 /* If stop_registers were not saved, use the current registers. */
1404 stop_regs
= regcache_dup (get_current_regcache ());
1405 make_cleanup_regcache_xfree (stop_regs
);
1408 gdbarch
= get_regcache_arch (stop_regs
);
1410 CHECK_TYPEDEF (value_type
);
1411 gdb_assert (TYPE_CODE (value_type
) != TYPE_CODE_VOID
);
1413 /* FIXME: 2003-09-27: When returning from a nested inferior function
1414 call, it's possible (with no help from the architecture vector)
1415 to locate and return/print a "struct return" value. This is just
1416 a more complicated case of what is already being done in the
1417 inferior function call code. In fact, when inferior function
1418 calls are made async, this will likely be made the norm. */
1420 switch (gdbarch_return_value (gdbarch
, function
, value_type
,
1423 case RETURN_VALUE_REGISTER_CONVENTION
:
1424 case RETURN_VALUE_ABI_RETURNS_ADDRESS
:
1425 case RETURN_VALUE_ABI_PRESERVES_ADDRESS
:
1426 value
= allocate_value (value_type
);
1427 gdbarch_return_value (gdbarch
, function
, value_type
, stop_regs
,
1428 value_contents_raw (value
), NULL
);
1430 case RETURN_VALUE_STRUCT_CONVENTION
:
1434 internal_error (__FILE__
, __LINE__
, _("bad switch"));
1437 do_cleanups (cleanup
);
1442 /* Print the result of a function at the end of a 'finish' command. */
1445 print_return_value (struct value
*function
, struct type
*value_type
)
1447 struct value
*value
= get_return_value (function
, value_type
);
1448 struct ui_out
*uiout
= current_uiout
;
1452 struct value_print_options opts
;
1453 struct ui_file
*stb
;
1454 struct cleanup
*old_chain
;
1457 stb
= mem_fileopen ();
1458 old_chain
= make_cleanup_ui_file_delete (stb
);
1459 ui_out_text (uiout
, "Value returned is ");
1460 ui_out_field_fmt (uiout
, "gdb-result-var", "$%d",
1461 record_latest_value (value
));
1462 ui_out_text (uiout
, " = ");
1463 get_no_prettyformat_print_options (&opts
);
1464 value_print (value
, stb
, &opts
);
1465 ui_out_field_stream (uiout
, "return-value", stb
);
1466 ui_out_text (uiout
, "\n");
1467 do_cleanups (old_chain
);
1471 ui_out_text (uiout
, "Value returned has type: ");
1472 ui_out_field_string (uiout
, "return-type", TYPE_NAME (value_type
));
1473 ui_out_text (uiout
, ".");
1474 ui_out_text (uiout
, " Cannot determine contents\n");
1478 /* Stuff that needs to be done by the finish command after the target
1479 has stopped. In asynchronous mode, we wait for the target to stop
1480 in the call to poll or select in the event loop, so it is
1481 impossible to do all the stuff as part of the finish_command
1482 function itself. The only chance we have to complete this command
1483 is in fetch_inferior_event, which is called by the event loop as
1484 soon as it detects that the target has stopped. */
1486 struct finish_command_continuation_args
1488 /* The thread that as current when the command was executed. */
1490 struct breakpoint
*breakpoint
;
1491 struct symbol
*function
;
1495 finish_command_continuation (void *arg
, int err
)
1497 struct finish_command_continuation_args
*a
= arg
;
1501 struct thread_info
*tp
= NULL
;
1504 if (!ptid_equal (inferior_ptid
, null_ptid
)
1505 && target_has_execution
1506 && is_stopped (inferior_ptid
))
1508 tp
= inferior_thread ();
1509 bs
= tp
->control
.stop_bpstat
;
1512 if (bpstat_find_breakpoint (bs
, a
->breakpoint
) != NULL
1513 && a
->function
!= NULL
)
1515 struct type
*value_type
;
1517 value_type
= TYPE_TARGET_TYPE (SYMBOL_TYPE (a
->function
));
1519 internal_error (__FILE__
, __LINE__
,
1520 _("finish_command: function has no target type"));
1522 if (TYPE_CODE (value_type
) != TYPE_CODE_VOID
)
1524 volatile struct gdb_exception ex
;
1527 func
= read_var_value (a
->function
, get_current_frame ());
1528 TRY_CATCH (ex
, RETURN_MASK_ALL
)
1530 /* print_return_value can throw an exception in some
1531 circumstances. We need to catch this so that we still
1532 delete the breakpoint. */
1533 print_return_value (func
, value_type
);
1536 exception_print (gdb_stdout
, ex
);
1540 /* We suppress normal call of normal_stop observer and do it
1541 here so that the *stopped notification includes the return
1543 if (bs
!= NULL
&& tp
->control
.proceed_to_finish
)
1544 observer_notify_normal_stop (bs
, 1 /* print frame */);
1547 delete_breakpoint (a
->breakpoint
);
1548 delete_longjmp_breakpoint (a
->thread
);
1552 finish_command_continuation_free_arg (void *arg
)
1557 /* finish_backward -- helper function for finish_command. */
1560 finish_backward (struct symbol
*function
)
1562 struct symtab_and_line sal
;
1563 struct thread_info
*tp
= inferior_thread ();
1565 CORE_ADDR func_addr
;
1567 pc
= get_frame_pc (get_current_frame ());
1569 if (find_pc_partial_function (pc
, NULL
, &func_addr
, NULL
) == 0)
1570 internal_error (__FILE__
, __LINE__
,
1571 _("Finish: couldn't find function."));
1573 sal
= find_pc_line (func_addr
, 0);
1575 tp
->control
.proceed_to_finish
= 1;
1576 /* Special case: if we're sitting at the function entry point,
1577 then all we need to do is take a reverse singlestep. We
1578 don't need to set a breakpoint, and indeed it would do us
1581 Note that this can only happen at frame #0, since there's
1582 no way that a function up the stack can have a return address
1583 that's equal to its entry point. */
1587 struct frame_info
*frame
= get_selected_frame (NULL
);
1588 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
1589 struct symtab_and_line sr_sal
;
1591 /* Set a step-resume at the function's entry point. Once that's
1592 hit, we'll do one more step backwards. */
1595 sr_sal
.pspace
= get_frame_program_space (frame
);
1596 insert_step_resume_breakpoint_at_sal (gdbarch
,
1597 sr_sal
, null_frame_id
);
1599 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
1603 /* We're almost there -- we just need to back up by one more
1605 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1606 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 1);
1610 /* finish_forward -- helper function for finish_command. */
1613 finish_forward (struct symbol
*function
, struct frame_info
*frame
)
1615 struct frame_id frame_id
= get_frame_id (frame
);
1616 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
1617 struct symtab_and_line sal
;
1618 struct thread_info
*tp
= inferior_thread ();
1619 struct breakpoint
*breakpoint
;
1620 struct cleanup
*old_chain
;
1621 struct finish_command_continuation_args
*cargs
;
1622 int thread
= tp
->num
;
1624 sal
= find_pc_line (get_frame_pc (frame
), 0);
1625 sal
.pc
= get_frame_pc (frame
);
1627 breakpoint
= set_momentary_breakpoint (gdbarch
, sal
,
1628 get_stack_frame_id (frame
),
1631 /* set_momentary_breakpoint invalidates FRAME. */
1634 old_chain
= make_cleanup_delete_breakpoint (breakpoint
);
1636 set_longjmp_breakpoint (tp
, frame_id
);
1637 make_cleanup (delete_longjmp_breakpoint_cleanup
, &thread
);
1639 /* We want stop_registers, please... */
1640 tp
->control
.proceed_to_finish
= 1;
1641 cargs
= xmalloc (sizeof (*cargs
));
1643 cargs
->thread
= thread
;
1644 cargs
->breakpoint
= breakpoint
;
1645 cargs
->function
= function
;
1646 add_continuation (tp
, finish_command_continuation
, cargs
,
1647 finish_command_continuation_free_arg
);
1648 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
1650 discard_cleanups (old_chain
);
1651 if (!target_can_async_p ())
1652 do_all_continuations (0);
1655 /* "finish": Set a temporary breakpoint at the place the selected
1656 frame will return to, then continue. */
1659 finish_command (char *arg
, int from_tty
)
1661 struct frame_info
*frame
;
1662 struct symbol
*function
;
1667 ensure_not_tfind_mode ();
1668 ensure_valid_thread ();
1669 ensure_not_running ();
1671 /* Find out whether we must run in the background. */
1673 async_exec
= strip_bg_char (&arg
);
1675 prepare_execution_command (¤t_target
, async_exec
);
1678 error (_("The \"finish\" command does not take any arguments."));
1680 frame
= get_prev_frame (get_selected_frame (_("No selected frame.")));
1682 error (_("\"finish\" not meaningful in the outermost frame."));
1684 clear_proceed_status ();
1686 /* Finishing from an inline frame is completely different. We don't
1687 try to show the "return value" - no way to locate it. So we do
1688 not need a completion. */
1689 if (get_frame_type (get_selected_frame (_("No selected frame.")))
1692 /* Claim we are stepping in the calling frame. An empty step
1693 range means that we will stop once we aren't in a function
1694 called by that frame. We don't use the magic "1" value for
1695 step_range_end, because then infrun will think this is nexti,
1696 and not step over the rest of this inlined function call. */
1697 struct thread_info
*tp
= inferior_thread ();
1698 struct symtab_and_line empty_sal
;
1700 init_sal (&empty_sal
);
1701 set_step_info (frame
, empty_sal
);
1702 tp
->control
.step_range_start
= get_frame_pc (frame
);
1703 tp
->control
.step_range_end
= tp
->control
.step_range_start
;
1704 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1706 /* Print info on the selected frame, including level number but not
1710 printf_filtered (_("Run till exit from "));
1711 print_stack_frame (get_selected_frame (NULL
), 1, LOCATION
, 0);
1714 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 1);
1718 /* Ignore TAILCALL_FRAME type frames, they were executed already before
1719 entering THISFRAME. */
1720 while (get_frame_type (frame
) == TAILCALL_FRAME
)
1721 frame
= get_prev_frame (frame
);
1723 /* Find the function we will return from. */
1725 function
= find_pc_function (get_frame_pc (get_selected_frame (NULL
)));
1727 /* Print info on the selected frame, including level number but not
1731 if (execution_direction
== EXEC_REVERSE
)
1732 printf_filtered (_("Run back to call of "));
1734 printf_filtered (_("Run till exit from "));
1736 print_stack_frame (get_selected_frame (NULL
), 1, LOCATION
, 0);
1739 if (execution_direction
== EXEC_REVERSE
)
1740 finish_backward (function
);
1742 finish_forward (function
, frame
);
1747 program_info (char *args
, int from_tty
)
1751 struct thread_info
*tp
;
1754 if (!target_has_execution
)
1756 printf_filtered (_("The program being debugged is not being run.\n"));
1761 ptid
= inferior_ptid
;
1764 struct target_waitstatus ws
;
1766 get_last_target_status (&ptid
, &ws
);
1769 if (ptid_equal (ptid
, null_ptid
) || is_exited (ptid
))
1770 error (_("Invalid selected thread."));
1771 else if (is_running (ptid
))
1772 error (_("Selected thread is running."));
1774 tp
= find_thread_ptid (ptid
);
1775 bs
= tp
->control
.stop_bpstat
;
1776 stat
= bpstat_num (&bs
, &num
);
1778 target_files_info ();
1779 printf_filtered (_("Program stopped at %s.\n"),
1780 paddress (target_gdbarch (), stop_pc
));
1781 if (tp
->control
.stop_step
)
1782 printf_filtered (_("It stopped after being stepped.\n"));
1785 /* There may be several breakpoints in the same place, so this
1786 isn't as strange as it seems. */
1791 printf_filtered (_("It stopped at a breakpoint "
1792 "that has since been deleted.\n"));
1795 printf_filtered (_("It stopped at breakpoint %d.\n"), num
);
1796 stat
= bpstat_num (&bs
, &num
);
1799 else if (tp
->suspend
.stop_signal
!= GDB_SIGNAL_0
)
1801 printf_filtered (_("It stopped with signal %s, %s.\n"),
1802 gdb_signal_to_name (tp
->suspend
.stop_signal
),
1803 gdb_signal_to_string (tp
->suspend
.stop_signal
));
1808 printf_filtered (_("Type \"info stack\" or \"info "
1809 "registers\" for more information.\n"));
1814 environment_info (char *var
, int from_tty
)
1818 char *val
= get_in_environ (current_inferior ()->environment
, var
);
1822 puts_filtered (var
);
1823 puts_filtered (" = ");
1824 puts_filtered (val
);
1825 puts_filtered ("\n");
1829 puts_filtered ("Environment variable \"");
1830 puts_filtered (var
);
1831 puts_filtered ("\" not defined.\n");
1836 char **vector
= environ_vector (current_inferior ()->environment
);
1840 puts_filtered (*vector
++);
1841 puts_filtered ("\n");
1847 set_environment_command (char *arg
, int from_tty
)
1849 char *p
, *val
, *var
;
1853 error_no_arg (_("environment variable and value"));
1855 /* Find seperation between variable name and value. */
1856 p
= (char *) strchr (arg
, '=');
1857 val
= (char *) strchr (arg
, ' ');
1859 if (p
!= 0 && val
!= 0)
1861 /* We have both a space and an equals. If the space is before the
1862 equals, walk forward over the spaces til we see a nonspace
1863 (possibly the equals). */
1868 /* Now if the = is after the char following the spaces,
1869 take the char following the spaces. */
1873 else if (val
!= 0 && p
== 0)
1877 error_no_arg (_("environment variable to set"));
1879 if (p
== 0 || p
[1] == 0)
1883 p
= arg
+ strlen (arg
); /* So that savestring below will work. */
1887 /* Not setting variable value to null. */
1889 while (*val
== ' ' || *val
== '\t')
1893 while (p
!= arg
&& (p
[-1] == ' ' || p
[-1] == '\t'))
1896 var
= savestring (arg
, p
- arg
);
1899 printf_filtered (_("Setting environment variable "
1900 "\"%s\" to null value.\n"),
1902 set_in_environ (current_inferior ()->environment
, var
, "");
1905 set_in_environ (current_inferior ()->environment
, var
, val
);
1910 unset_environment_command (char *var
, int from_tty
)
1914 /* If there is no argument, delete all environment variables.
1915 Ask for confirmation if reading from the terminal. */
1916 if (!from_tty
|| query (_("Delete all environment variables? ")))
1918 free_environ (current_inferior ()->environment
);
1919 current_inferior ()->environment
= make_environ ();
1923 unset_in_environ (current_inferior ()->environment
, var
);
1926 /* Handle the execution path (PATH variable). */
1928 static const char path_var_name
[] = "PATH";
1931 path_info (char *args
, int from_tty
)
1933 puts_filtered ("Executable and object file path: ");
1934 puts_filtered (get_in_environ (current_inferior ()->environment
,
1936 puts_filtered ("\n");
1939 /* Add zero or more directories to the front of the execution path. */
1942 path_command (char *dirname
, int from_tty
)
1948 env
= get_in_environ (current_inferior ()->environment
, path_var_name
);
1949 /* Can be null if path is not set. */
1952 exec_path
= xstrdup (env
);
1953 mod_path (dirname
, &exec_path
);
1954 set_in_environ (current_inferior ()->environment
, path_var_name
, exec_path
);
1957 path_info ((char *) NULL
, from_tty
);
1961 /* Print out the register NAME with value VAL, to FILE, in the default
1965 default_print_one_register_info (struct ui_file
*file
,
1969 struct type
*regtype
= value_type (val
);
1970 int print_raw_format
;
1972 fputs_filtered (name
, file
);
1973 print_spaces_filtered (15 - strlen (name
), file
);
1975 print_raw_format
= (value_entirely_available (val
)
1976 && !value_optimized_out (val
));
1978 /* If virtual format is floating, print it that way, and in raw
1980 if (TYPE_CODE (regtype
) == TYPE_CODE_FLT
1981 || TYPE_CODE (regtype
) == TYPE_CODE_DECFLOAT
)
1984 struct value_print_options opts
;
1985 const gdb_byte
*valaddr
= value_contents_for_printing (val
);
1986 enum bfd_endian byte_order
= gdbarch_byte_order (get_type_arch (regtype
));
1988 get_user_print_options (&opts
);
1992 value_contents_for_printing (val
),
1993 value_embedded_offset (val
), 0,
1994 file
, 0, val
, &opts
, current_language
);
1996 if (print_raw_format
)
1998 fprintf_filtered (file
, "\t(raw ");
1999 print_hex_chars (file
, valaddr
, TYPE_LENGTH (regtype
), byte_order
);
2000 fprintf_filtered (file
, ")");
2005 struct value_print_options opts
;
2007 /* Print the register in hex. */
2008 get_formatted_print_options (&opts
, 'x');
2011 value_contents_for_printing (val
),
2012 value_embedded_offset (val
), 0,
2013 file
, 0, val
, &opts
, current_language
);
2014 /* If not a vector register, print it also according to its
2016 if (print_raw_format
&& TYPE_VECTOR (regtype
) == 0)
2018 get_user_print_options (&opts
);
2020 fprintf_filtered (file
, "\t");
2022 value_contents_for_printing (val
),
2023 value_embedded_offset (val
), 0,
2024 file
, 0, val
, &opts
, current_language
);
2028 fprintf_filtered (file
, "\n");
2031 /* Print out the machine register regnum. If regnum is -1, print all
2032 registers (print_all == 1) or all non-float and non-vector
2033 registers (print_all == 0).
2035 For most machines, having all_registers_info() print the
2036 register(s) one per line is good enough. If a different format is
2037 required, (eg, for MIPS or Pyramid 90x, which both have lots of
2038 regs), or there is an existing convention for showing all the
2039 registers, define the architecture method PRINT_REGISTERS_INFO to
2040 provide that format. */
2043 default_print_registers_info (struct gdbarch
*gdbarch
,
2044 struct ui_file
*file
,
2045 struct frame_info
*frame
,
2046 int regnum
, int print_all
)
2049 const int numregs
= gdbarch_num_regs (gdbarch
)
2050 + gdbarch_num_pseudo_regs (gdbarch
);
2052 for (i
= 0; i
< numregs
; i
++)
2054 /* Decide between printing all regs, non-float / vector regs, or
2060 if (!gdbarch_register_reggroup_p (gdbarch
, i
, all_reggroup
))
2065 if (!gdbarch_register_reggroup_p (gdbarch
, i
, general_reggroup
))
2075 /* If the register name is empty, it is undefined for this
2076 processor, so don't display anything. */
2077 if (gdbarch_register_name (gdbarch
, i
) == NULL
2078 || *(gdbarch_register_name (gdbarch
, i
)) == '\0')
2081 default_print_one_register_info (file
,
2082 gdbarch_register_name (gdbarch
, i
),
2083 value_of_register (i
, frame
));
2088 registers_info (char *addr_exp
, int fpregs
)
2090 struct frame_info
*frame
;
2091 struct gdbarch
*gdbarch
;
2093 if (!target_has_registers
)
2094 error (_("The program has no registers now."));
2095 frame
= get_selected_frame (NULL
);
2096 gdbarch
= get_frame_arch (frame
);
2100 gdbarch_print_registers_info (gdbarch
, gdb_stdout
,
2105 while (*addr_exp
!= '\0')
2110 /* Skip leading white space. */
2111 addr_exp
= skip_spaces (addr_exp
);
2113 /* Discard any leading ``$''. Check that there is something
2114 resembling a register following it. */
2115 if (addr_exp
[0] == '$')
2117 if (isspace ((*addr_exp
)) || (*addr_exp
) == '\0')
2118 error (_("Missing register name"));
2120 /* Find the start/end of this register name/num/group. */
2122 while ((*addr_exp
) != '\0' && !isspace ((*addr_exp
)))
2126 /* Figure out what we've found and display it. */
2128 /* A register name? */
2130 int regnum
= user_reg_map_name_to_regnum (gdbarch
, start
, end
- start
);
2134 /* User registers lie completely outside of the range of
2135 normal registers. Catch them early so that the target
2137 if (regnum
>= gdbarch_num_regs (gdbarch
)
2138 + gdbarch_num_pseudo_regs (gdbarch
))
2140 struct value
*regval
= value_of_user_reg (regnum
, frame
);
2141 const char *regname
= user_reg_map_regnum_to_name (gdbarch
,
2144 /* Print in the same fashion
2145 gdbarch_print_registers_info's default
2146 implementation prints. */
2147 default_print_one_register_info (gdb_stdout
,
2152 gdbarch_print_registers_info (gdbarch
, gdb_stdout
,
2153 frame
, regnum
, fpregs
);
2158 /* A register group? */
2160 struct reggroup
*group
;
2162 for (group
= reggroup_next (gdbarch
, NULL
);
2164 group
= reggroup_next (gdbarch
, group
))
2166 /* Don't bother with a length check. Should the user
2167 enter a short register group name, go with the first
2168 group that matches. */
2169 if (strncmp (start
, reggroup_name (group
), end
- start
) == 0)
2177 regnum
< gdbarch_num_regs (gdbarch
)
2178 + gdbarch_num_pseudo_regs (gdbarch
);
2181 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, group
))
2182 gdbarch_print_registers_info (gdbarch
,
2190 /* Nothing matched. */
2191 error (_("Invalid register `%.*s'"), (int) (end
- start
), start
);
2196 all_registers_info (char *addr_exp
, int from_tty
)
2198 registers_info (addr_exp
, 1);
2202 nofp_registers_info (char *addr_exp
, int from_tty
)
2204 registers_info (addr_exp
, 0);
2208 print_vector_info (struct ui_file
*file
,
2209 struct frame_info
*frame
, const char *args
)
2211 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
2213 if (gdbarch_print_vector_info_p (gdbarch
))
2214 gdbarch_print_vector_info (gdbarch
, file
, frame
, args
);
2218 int printed_something
= 0;
2221 regnum
< gdbarch_num_regs (gdbarch
)
2222 + gdbarch_num_pseudo_regs (gdbarch
);
2225 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, vector_reggroup
))
2227 printed_something
= 1;
2228 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
2231 if (!printed_something
)
2232 fprintf_filtered (file
, "No vector information\n");
2237 vector_info (char *args
, int from_tty
)
2239 if (!target_has_registers
)
2240 error (_("The program has no registers now."));
2242 print_vector_info (gdb_stdout
, get_selected_frame (NULL
), args
);
2245 /* Kill the inferior process. Make us have no inferior. */
2248 kill_command (char *arg
, int from_tty
)
2250 /* FIXME: This should not really be inferior_ptid (or target_has_execution).
2251 It should be a distinct flag that indicates that a target is active, cuz
2252 some targets don't have processes! */
2254 if (ptid_equal (inferior_ptid
, null_ptid
))
2255 error (_("The program is not being run."));
2256 if (!query (_("Kill the program being debugged? ")))
2257 error (_("Not confirmed."));
2260 /* If we still have other inferiors to debug, then don't mess with
2261 with their threads. */
2262 if (!have_inferiors ())
2264 init_thread_list (); /* Destroy thread info. */
2266 /* Killing off the inferior can leave us with a core file. If
2267 so, print the state we are left in. */
2268 if (target_has_stack
)
2270 printf_filtered (_("In %s,\n"), target_longname
);
2271 print_stack_frame (get_selected_frame (NULL
), 1, SRC_AND_LOC
, 1);
2274 bfd_cache_close_all ();
2277 /* Used in `attach&' command. ARG is a point to an integer
2278 representing a process id. Proceed threads of this process iff
2279 they stopped due to debugger request, and when they did, they
2280 reported a clean stop (GDB_SIGNAL_0). Do not proceed threads
2281 that have been explicitly been told to stop. */
2284 proceed_after_attach_callback (struct thread_info
*thread
,
2287 int pid
= * (int *) arg
;
2289 if (ptid_get_pid (thread
->ptid
) == pid
2290 && !is_exited (thread
->ptid
)
2291 && !is_executing (thread
->ptid
)
2292 && !thread
->stop_requested
2293 && thread
->suspend
.stop_signal
== GDB_SIGNAL_0
)
2295 switch_to_thread (thread
->ptid
);
2296 clear_proceed_status ();
2297 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
2304 proceed_after_attach (int pid
)
2306 /* Don't error out if the current thread is running, because
2307 there may be other stopped threads. */
2308 struct cleanup
*old_chain
;
2310 /* Backup current thread and selected frame. */
2311 old_chain
= make_cleanup_restore_current_thread ();
2313 iterate_over_threads (proceed_after_attach_callback
, &pid
);
2315 /* Restore selected ptid. */
2316 do_cleanups (old_chain
);
2321 * Should save/restore the tty state since it might be that the
2322 * program to be debugged was started on this tty and it wants
2323 * the tty in some state other than what we want. If it's running
2324 * on another terminal or without a terminal, then saving and
2325 * restoring the tty state is a harmless no-op.
2326 * This only needs to be done if we are attaching to a process.
2329 /* attach_command --
2330 takes a program started up outside of gdb and ``attaches'' to it.
2331 This stops it cold in its tracks and allows us to start debugging it.
2332 and wait for the trace-trap that results from attaching. */
2335 attach_command_post_wait (char *args
, int from_tty
, int async_exec
)
2338 char *full_exec_path
= NULL
;
2339 struct inferior
*inferior
;
2341 inferior
= current_inferior ();
2342 inferior
->control
.stop_soon
= NO_STOP_QUIETLY
;
2344 /* If no exec file is yet known, try to determine it from the
2346 exec_file
= (char *) get_exec_file (0);
2349 exec_file
= target_pid_to_exec_file (ptid_get_pid (inferior_ptid
));
2352 /* It's possible we don't have a full path, but rather just a
2353 filename. Some targets, such as HP-UX, don't provide the
2356 Attempt to qualify the filename against the source path.
2357 (If that fails, we'll just fall back on the original
2358 filename. Not much more we can do...) */
2360 if (!source_full_path_of (exec_file
, &full_exec_path
))
2361 full_exec_path
= xstrdup (exec_file
);
2363 exec_file_attach (full_exec_path
, from_tty
);
2364 symbol_file_add_main (full_exec_path
, from_tty
);
2369 reopen_exec_file ();
2373 /* Take any necessary post-attaching actions for this platform. */
2374 target_post_attach (ptid_get_pid (inferior_ptid
));
2376 post_create_inferior (¤t_target
, from_tty
);
2378 /* Install inferior's terminal modes. */
2379 target_terminal_inferior ();
2383 /* The user requested an `attach&', so be sure to leave threads
2384 that didn't get a signal running. */
2386 /* Immediatelly resume all suspended threads of this inferior,
2387 and this inferior only. This should have no effect on
2388 already running threads. If a thread has been stopped with a
2389 signal, leave it be. */
2391 proceed_after_attach (inferior
->pid
);
2394 if (inferior_thread ()->suspend
.stop_signal
== GDB_SIGNAL_0
)
2396 clear_proceed_status ();
2397 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
2403 /* The user requested a plain `attach', so be sure to leave
2404 the inferior stopped. */
2406 if (target_can_async_p ())
2407 async_enable_stdin ();
2409 /* At least the current thread is already stopped. */
2411 /* In all-stop, by definition, all threads have to be already
2412 stopped at this point. In non-stop, however, although the
2413 selected thread is stopped, others may still be executing.
2414 Be sure to explicitly stop all threads of the process. This
2415 should have no effect on already stopped threads. */
2417 target_stop (pid_to_ptid (inferior
->pid
));
2419 /* Tell the user/frontend where we're stopped. */
2421 if (deprecated_attach_hook
)
2422 deprecated_attach_hook ();
2426 struct attach_command_continuation_args
2434 attach_command_continuation (void *args
, int err
)
2436 struct attach_command_continuation_args
*a
= args
;
2441 attach_command_post_wait (a
->args
, a
->from_tty
, a
->async_exec
);
2445 attach_command_continuation_free_args (void *args
)
2447 struct attach_command_continuation_args
*a
= args
;
2454 attach_command (char *args
, int from_tty
)
2457 struct target_ops
*attach_target
;
2459 dont_repeat (); /* Not for the faint of heart */
2461 if (gdbarch_has_global_solist (target_gdbarch ()))
2462 /* Don't complain if all processes share the same symbol
2465 else if (target_has_execution
)
2467 if (query (_("A program is being debugged already. Kill it? ")))
2470 error (_("Not killed."));
2473 /* Clean up any leftovers from other runs. Some other things from
2474 this function should probably be moved into target_pre_inferior. */
2475 target_pre_inferior (from_tty
);
2478 async_exec
= strip_bg_char (&args
);
2480 attach_target
= find_attach_target ();
2482 prepare_execution_command (attach_target
, async_exec
);
2484 if (non_stop
&& !attach_target
->to_supports_non_stop (attach_target
))
2485 error (_("Cannot attach to this target in non-stop mode"));
2487 attach_target
->to_attach (attach_target
, args
, from_tty
);
2488 /* to_attach should push the target, so after this point we
2489 shouldn't refer to attach_target again. */
2490 attach_target
= NULL
;
2492 /* Set up the "saved terminal modes" of the inferior
2493 based on what modes we are starting it with. */
2494 target_terminal_init ();
2496 /* Set up execution context to know that we should return from
2497 wait_for_inferior as soon as the target reports a stop. */
2498 init_wait_for_inferior ();
2499 clear_proceed_status ();
2503 /* If we find that the current thread isn't stopped, explicitly
2504 do so now, because we're going to install breakpoints and
2508 /* The user requested an `attach&'; stop just one thread. */
2509 target_stop (inferior_ptid
);
2511 /* The user requested an `attach', so stop all threads of this
2513 target_stop (pid_to_ptid (ptid_get_pid (inferior_ptid
)));
2516 /* Some system don't generate traps when attaching to inferior.
2517 E.g. Mach 3 or GNU hurd. */
2518 if (!target_attach_no_wait
)
2520 struct inferior
*inferior
= current_inferior ();
2522 /* Careful here. See comments in inferior.h. Basically some
2523 OSes don't ignore SIGSTOPs on continue requests anymore. We
2524 need a way for handle_inferior_event to reset the stop_signal
2525 variable after an attach, and this is what
2526 STOP_QUIETLY_NO_SIGSTOP is for. */
2527 inferior
->control
.stop_soon
= STOP_QUIETLY_NO_SIGSTOP
;
2529 if (target_can_async_p ())
2531 /* sync_execution mode. Wait for stop. */
2532 struct attach_command_continuation_args
*a
;
2534 a
= xmalloc (sizeof (*a
));
2535 a
->args
= xstrdup (args
);
2536 a
->from_tty
= from_tty
;
2537 a
->async_exec
= async_exec
;
2538 add_inferior_continuation (attach_command_continuation
, a
,
2539 attach_command_continuation_free_args
);
2543 wait_for_inferior ();
2546 attach_command_post_wait (args
, from_tty
, async_exec
);
2549 /* We had just found out that the target was already attached to an
2550 inferior. PTID points at a thread of this new inferior, that is
2551 the most likely to be stopped right now, but not necessarily so.
2552 The new inferior is assumed to be already added to the inferior
2553 list at this point. If LEAVE_RUNNING, then leave the threads of
2554 this inferior running, except those we've explicitly seen reported
2558 notice_new_inferior (ptid_t ptid
, int leave_running
, int from_tty
)
2560 struct cleanup
* old_chain
;
2563 old_chain
= make_cleanup (null_cleanup
, NULL
);
2565 /* If in non-stop, leave threads as running as they were. If
2566 they're stopped for some reason other than us telling it to, the
2567 target reports a signal != GDB_SIGNAL_0. We don't try to
2568 resume threads with such a stop signal. */
2569 async_exec
= non_stop
;
2571 if (!ptid_equal (inferior_ptid
, null_ptid
))
2572 make_cleanup_restore_current_thread ();
2574 switch_to_thread (ptid
);
2576 /* When we "notice" a new inferior we need to do all the things we
2577 would normally do if we had just attached to it. */
2579 if (is_executing (inferior_ptid
))
2581 struct inferior
*inferior
= current_inferior ();
2583 /* We're going to install breakpoints, and poke at memory,
2584 ensure that the inferior is stopped for a moment while we do
2586 target_stop (inferior_ptid
);
2588 inferior
->control
.stop_soon
= STOP_QUIETLY_REMOTE
;
2590 /* Wait for stop before proceeding. */
2591 if (target_can_async_p ())
2593 struct attach_command_continuation_args
*a
;
2595 a
= xmalloc (sizeof (*a
));
2596 a
->args
= xstrdup ("");
2597 a
->from_tty
= from_tty
;
2598 a
->async_exec
= async_exec
;
2599 add_inferior_continuation (attach_command_continuation
, a
,
2600 attach_command_continuation_free_args
);
2602 do_cleanups (old_chain
);
2606 wait_for_inferior ();
2609 async_exec
= leave_running
;
2610 attach_command_post_wait ("" /* args */, from_tty
, async_exec
);
2612 do_cleanups (old_chain
);
2617 * takes a program previously attached to and detaches it.
2618 * The program resumes execution and will no longer stop
2619 * on signals, etc. We better not have left any breakpoints
2620 * in the program or it'll die when it hits one. For this
2621 * to work, it may be necessary for the process to have been
2622 * previously attached. It *might* work if the program was
2623 * started via the normal ptrace (PTRACE_TRACEME).
2627 detach_command (char *args
, int from_tty
)
2629 dont_repeat (); /* Not for the faint of heart. */
2631 if (ptid_equal (inferior_ptid
, null_ptid
))
2632 error (_("The program is not being run."));
2634 query_if_trace_running (from_tty
);
2636 disconnect_tracing ();
2638 target_detach (args
, from_tty
);
2640 /* If the solist is global across inferiors, don't clear it when we
2641 detach from a single inferior. */
2642 if (!gdbarch_has_global_solist (target_gdbarch ()))
2643 no_shared_libraries (NULL
, from_tty
);
2645 /* If we still have inferiors to debug, then don't mess with their
2647 if (!have_inferiors ())
2648 init_thread_list ();
2650 if (deprecated_detach_hook
)
2651 deprecated_detach_hook ();
2654 /* Disconnect from the current target without resuming it (leaving it
2655 waiting for a debugger).
2657 We'd better not have left any breakpoints in the program or the
2658 next debugger will get confused. Currently only supported for some
2659 remote targets, since the normal attach mechanisms don't work on
2660 stopped processes on some native platforms (e.g. GNU/Linux). */
2663 disconnect_command (char *args
, int from_tty
)
2665 dont_repeat (); /* Not for the faint of heart. */
2666 query_if_trace_running (from_tty
);
2667 disconnect_tracing ();
2668 target_disconnect (args
, from_tty
);
2669 no_shared_libraries (NULL
, from_tty
);
2670 init_thread_list ();
2671 if (deprecated_detach_hook
)
2672 deprecated_detach_hook ();
2676 interrupt_target_1 (int all_threads
)
2681 ptid
= minus_one_ptid
;
2683 ptid
= inferior_ptid
;
2686 /* Tag the thread as having been explicitly requested to stop, so
2687 other parts of gdb know not to resume this thread automatically,
2688 if it was stopped due to an internal event. Limit this to
2689 non-stop mode, as when debugging a multi-threaded application in
2690 all-stop mode, we will only get one stop event --- it's undefined
2691 which thread will report the event. */
2693 set_stop_requested (ptid
, 1);
2696 /* Stop the execution of the target while running in async mode, in
2697 the backgound. In all-stop, stop the whole process. In non-stop
2698 mode, stop the current thread only by default, or stop all threads
2699 if the `-a' switch is used. */
2701 /* interrupt [-a] */
2703 interrupt_command (char *args
, int from_tty
)
2705 if (target_can_async_p ())
2707 int all_threads
= 0;
2709 dont_repeat (); /* Not for the faint of heart. */
2712 && strncmp (args
, "-a", sizeof ("-a") - 1) == 0)
2715 if (!non_stop
&& all_threads
)
2716 error (_("-a is meaningless in all-stop mode."));
2718 interrupt_target_1 (all_threads
);
2723 print_float_info (struct ui_file
*file
,
2724 struct frame_info
*frame
, const char *args
)
2726 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
2728 if (gdbarch_print_float_info_p (gdbarch
))
2729 gdbarch_print_float_info (gdbarch
, file
, frame
, args
);
2733 int printed_something
= 0;
2736 regnum
< gdbarch_num_regs (gdbarch
)
2737 + gdbarch_num_pseudo_regs (gdbarch
);
2740 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, float_reggroup
))
2742 printed_something
= 1;
2743 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
2746 if (!printed_something
)
2747 fprintf_filtered (file
, "No floating-point info "
2748 "available for this processor.\n");
2753 float_info (char *args
, int from_tty
)
2755 if (!target_has_registers
)
2756 error (_("The program has no registers now."));
2758 print_float_info (gdb_stdout
, get_selected_frame (NULL
), args
);
2762 unset_command (char *args
, int from_tty
)
2764 printf_filtered (_("\"unset\" must be followed by the "
2765 "name of an unset subcommand.\n"));
2766 help_list (unsetlist
, "unset ", -1, gdb_stdout
);
2769 /* Implement `info proc' family of commands. */
2772 info_proc_cmd_1 (char *args
, enum info_proc_what what
, int from_tty
)
2774 struct gdbarch
*gdbarch
= get_current_arch ();
2776 if (!target_info_proc (args
, what
))
2778 if (gdbarch_info_proc_p (gdbarch
))
2779 gdbarch_info_proc (gdbarch
, args
, what
);
2781 error (_("Not supported on this target."));
2785 /* Implement `info proc' when given without any futher parameters. */
2788 info_proc_cmd (char *args
, int from_tty
)
2790 info_proc_cmd_1 (args
, IP_MINIMAL
, from_tty
);
2793 /* Implement `info proc mappings'. */
2796 info_proc_cmd_mappings (char *args
, int from_tty
)
2798 info_proc_cmd_1 (args
, IP_MAPPINGS
, from_tty
);
2801 /* Implement `info proc stat'. */
2804 info_proc_cmd_stat (char *args
, int from_tty
)
2806 info_proc_cmd_1 (args
, IP_STAT
, from_tty
);
2809 /* Implement `info proc status'. */
2812 info_proc_cmd_status (char *args
, int from_tty
)
2814 info_proc_cmd_1 (args
, IP_STATUS
, from_tty
);
2817 /* Implement `info proc cwd'. */
2820 info_proc_cmd_cwd (char *args
, int from_tty
)
2822 info_proc_cmd_1 (args
, IP_CWD
, from_tty
);
2825 /* Implement `info proc cmdline'. */
2828 info_proc_cmd_cmdline (char *args
, int from_tty
)
2830 info_proc_cmd_1 (args
, IP_CMDLINE
, from_tty
);
2833 /* Implement `info proc exe'. */
2836 info_proc_cmd_exe (char *args
, int from_tty
)
2838 info_proc_cmd_1 (args
, IP_EXE
, from_tty
);
2841 /* Implement `info proc all'. */
2844 info_proc_cmd_all (char *args
, int from_tty
)
2846 info_proc_cmd_1 (args
, IP_ALL
, from_tty
);
2850 _initialize_infcmd (void)
2852 static struct cmd_list_element
*info_proc_cmdlist
;
2853 struct cmd_list_element
*c
= NULL
;
2854 const char *cmd_name
;
2856 /* Add the filename of the terminal connected to inferior I/O. */
2857 add_setshow_filename_cmd ("inferior-tty", class_run
,
2858 &inferior_io_terminal_scratch
, _("\
2859 Set terminal for future runs of program being debugged."), _("\
2860 Show terminal for future runs of program being debugged."), _("\
2861 Usage: set inferior-tty /dev/pts/1"),
2862 set_inferior_tty_command
,
2863 show_inferior_tty_command
,
2864 &setlist
, &showlist
);
2865 add_com_alias ("tty", "set inferior-tty", class_alias
, 0);
2868 add_setshow_string_noescape_cmd (cmd_name
, class_run
,
2869 &inferior_args_scratch
, _("\
2870 Set argument list to give program being debugged when it is started."), _("\
2871 Show argument list to give program being debugged when it is started."), _("\
2872 Follow this command with any number of args, to be passed to the program."),
2875 &setlist
, &showlist
);
2876 c
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
2877 gdb_assert (c
!= NULL
);
2878 set_cmd_completer (c
, filename_completer
);
2880 c
= add_cmd ("environment", no_class
, environment_info
, _("\
2881 The environment to give the program, or one variable's value.\n\
2882 With an argument VAR, prints the value of environment variable VAR to\n\
2883 give the program being debugged. With no arguments, prints the entire\n\
2884 environment to be given to the program."), &showlist
);
2885 set_cmd_completer (c
, noop_completer
);
2887 add_prefix_cmd ("unset", no_class
, unset_command
,
2888 _("Complement to certain \"set\" commands."),
2889 &unsetlist
, "unset ", 0, &cmdlist
);
2891 c
= add_cmd ("environment", class_run
, unset_environment_command
, _("\
2892 Cancel environment variable VAR for the program.\n\
2893 This does not affect the program until the next \"run\" command."),
2895 set_cmd_completer (c
, noop_completer
);
2897 c
= add_cmd ("environment", class_run
, set_environment_command
, _("\
2898 Set environment variable value to give the program.\n\
2899 Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\
2900 VALUES of environment variables are uninterpreted strings.\n\
2901 This does not affect the program until the next \"run\" command."),
2903 set_cmd_completer (c
, noop_completer
);
2905 c
= add_com ("path", class_files
, path_command
, _("\
2906 Add directory DIR(s) to beginning of search path for object files.\n\
2907 $cwd in the path means the current working directory.\n\
2908 This path is equivalent to the $PATH shell variable. It is a list of\n\
2909 directories, separated by colons. These directories are searched to find\n\
2910 fully linked executable files and separately compiled object files as \
2912 set_cmd_completer (c
, filename_completer
);
2914 c
= add_cmd ("paths", no_class
, path_info
, _("\
2915 Current search path for finding object files.\n\
2916 $cwd in the path means the current working directory.\n\
2917 This path is equivalent to the $PATH shell variable. It is a list of\n\
2918 directories, separated by colons. These directories are searched to find\n\
2919 fully linked executable files and separately compiled object files as \
2922 set_cmd_completer (c
, noop_completer
);
2924 add_prefix_cmd ("kill", class_run
, kill_command
,
2925 _("Kill execution of program being debugged."),
2926 &killlist
, "kill ", 0, &cmdlist
);
2928 add_com ("attach", class_run
, attach_command
, _("\
2929 Attach to a process or file outside of GDB.\n\
2930 This command attaches to another target, of the same type as your last\n\
2931 \"target\" command (\"info files\" will show your target stack).\n\
2932 The command may take as argument a process id or a device file.\n\
2933 For a process id, you must have permission to send the process a signal,\n\
2934 and it must have the same effective uid as the debugger.\n\
2935 When using \"attach\" with a process id, the debugger finds the\n\
2936 program running in the process, looking first in the current working\n\
2937 directory, or (if not found there) using the source file search path\n\
2938 (see the \"directory\" command). You can also use the \"file\" command\n\
2939 to specify the program, and to load its symbol table."));
2941 add_prefix_cmd ("detach", class_run
, detach_command
, _("\
2942 Detach a process or file previously attached.\n\
2943 If a process, it is no longer traced, and it continues its execution. If\n\
2944 you were debugging a file, the file is closed and gdb no longer accesses it."),
2945 &detachlist
, "detach ", 0, &cmdlist
);
2947 add_com ("disconnect", class_run
, disconnect_command
, _("\
2948 Disconnect from a target.\n\
2949 The target will wait for another debugger to connect. Not available for\n\
2952 c
= add_com ("signal", class_run
, signal_command
, _("\
2953 Continue program with the specified signal.\n\
2954 Usage: signal SIGNAL\n\
2955 The SIGNAL argument is processed the same as the handle command.\n\
2957 An argument of \"0\" means continue the program without sending it a signal.\n\
2958 This is useful in cases where the program stopped because of a signal,\n\
2959 and you want to resume the program while discarding the signal."));
2960 set_cmd_completer (c
, signal_completer
);
2962 add_com ("stepi", class_run
, stepi_command
, _("\
2963 Step one instruction exactly.\n\
2965 Argument N means step N times (or till program stops for another \
2967 add_com_alias ("si", "stepi", class_alias
, 0);
2969 add_com ("nexti", class_run
, nexti_command
, _("\
2970 Step one instruction, but proceed through subroutine calls.\n\
2972 Argument N means step N times (or till program stops for another \
2974 add_com_alias ("ni", "nexti", class_alias
, 0);
2976 add_com ("finish", class_run
, finish_command
, _("\
2977 Execute until selected stack frame returns.\n\
2979 Upon return, the value returned is printed and put in the value history."));
2980 add_com_alias ("fin", "finish", class_run
, 1);
2982 add_com ("next", class_run
, next_command
, _("\
2983 Step program, proceeding through subroutine calls.\n\
2985 Unlike \"step\", if the current source line calls a subroutine,\n\
2986 this command does not enter the subroutine, but instead steps over\n\
2987 the call, in effect treating it as a single source line."));
2988 add_com_alias ("n", "next", class_run
, 1);
2990 add_com_alias ("S", "next", class_run
, 1);
2992 add_com ("step", class_run
, step_command
, _("\
2993 Step program until it reaches a different source line.\n\
2995 Argument N means step N times (or till program stops for another \
2997 add_com_alias ("s", "step", class_run
, 1);
2999 c
= add_com ("until", class_run
, until_command
, _("\
3000 Execute until the program reaches a source line greater than the current\n\
3001 or a specified location (same args as break command) within the current \
3003 set_cmd_completer (c
, location_completer
);
3004 add_com_alias ("u", "until", class_run
, 1);
3006 c
= add_com ("advance", class_run
, advance_command
, _("\
3007 Continue the program up to the given location (same form as args for break \
3009 Execution will also stop upon exit from the current stack frame."));
3010 set_cmd_completer (c
, location_completer
);
3012 c
= add_com ("jump", class_run
, jump_command
, _("\
3013 Continue program being debugged at specified line or address.\n\
3014 Usage: jump <location>\n\
3015 Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\
3016 for an address to start at."));
3017 set_cmd_completer (c
, location_completer
);
3018 add_com_alias ("j", "jump", class_run
, 1);
3022 c
= add_com ("go", class_run
, go_command
, _("\
3023 Usage: go <location>\n\
3024 Continue program being debugged, stopping at specified line or \n\
3026 Give as argument either LINENUM or *ADDR, where ADDR is an \n\
3027 expression for an address to start at.\n\
3028 This command is a combination of tbreak and jump."));
3029 set_cmd_completer (c
, location_completer
);
3033 add_com_alias ("g", "go", class_run
, 1);
3035 add_com ("continue", class_run
, continue_command
, _("\
3036 Continue program being debugged, after signal or breakpoint.\n\
3037 Usage: continue [N]\n\
3038 If proceeding from breakpoint, a number N may be used as an argument,\n\
3039 which means to set the ignore count of that breakpoint to N - 1 (so that\n\
3040 the breakpoint won't break until the Nth time it is reached).\n\
3042 If non-stop mode is enabled, continue only the current thread,\n\
3043 otherwise all the threads in the program are continued. To \n\
3044 continue all stopped threads in non-stop mode, use the -a option.\n\
3045 Specifying -a and an ignore count simultaneously is an error."));
3046 add_com_alias ("c", "cont", class_run
, 1);
3047 add_com_alias ("fg", "cont", class_run
, 1);
3049 c
= add_com ("run", class_run
, run_command
, _("\
3050 Start debugged program. You may specify arguments to give it.\n\
3051 Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\
3052 Input and output redirection with \">\", \"<\", or \">>\" are also \
3054 With no arguments, uses arguments last specified (with \"run\" \
3055 or \"set args\").\n\
3056 To cancel previous arguments and run with no arguments,\n\
3057 use \"set args\" without arguments."));
3058 set_cmd_completer (c
, filename_completer
);
3059 add_com_alias ("r", "run", class_run
, 1);
3061 add_com ("R", class_run
, run_no_args_command
,
3062 _("Start debugged program with no arguments."));
3064 c
= add_com ("start", class_run
, start_command
, _("\
3065 Run the debugged program until the beginning of the main procedure.\n\
3066 You may specify arguments to give to your program, just as with the\n\
3067 \"run\" command."));
3068 set_cmd_completer (c
, filename_completer
);
3070 add_com ("interrupt", class_run
, interrupt_command
,
3071 _("Interrupt the execution of the debugged program.\n\
3072 If non-stop mode is enabled, interrupt only the current thread,\n\
3073 otherwise all the threads in the program are stopped. To \n\
3074 interrupt all running threads in non-stop mode, use the -a option."));
3076 add_info ("registers", nofp_registers_info
, _("\
3077 List of integer registers and their contents, for selected stack frame.\n\
3078 Register name as argument means describe only that register."));
3079 add_info_alias ("r", "registers", 1);
3082 add_com ("lr", class_info
, nofp_registers_info
, _("\
3083 List of integer registers and their contents, for selected stack frame.\n\
3084 Register name as argument means describe only that register."));
3085 add_info ("all-registers", all_registers_info
, _("\
3086 List of all registers and their contents, for selected stack frame.\n\
3087 Register name as argument means describe only that register."));
3089 add_info ("program", program_info
,
3090 _("Execution status of the program."));
3092 add_info ("float", float_info
,
3093 _("Print the status of the floating point unit\n"));
3095 add_info ("vector", vector_info
,
3096 _("Print the status of the vector unit\n"));
3098 add_prefix_cmd ("proc", class_info
, info_proc_cmd
,
3100 Show /proc process information about any running process.\n\
3101 Specify any process id, or use the program being debugged by default."),
3102 &info_proc_cmdlist
, "info proc ",
3103 1/*allow-unknown*/, &infolist
);
3105 add_cmd ("mappings", class_info
, info_proc_cmd_mappings
, _("\
3106 List of mapped memory regions."),
3107 &info_proc_cmdlist
);
3109 add_cmd ("stat", class_info
, info_proc_cmd_stat
, _("\
3110 List process info from /proc/PID/stat."),
3111 &info_proc_cmdlist
);
3113 add_cmd ("status", class_info
, info_proc_cmd_status
, _("\
3114 List process info from /proc/PID/status."),
3115 &info_proc_cmdlist
);
3117 add_cmd ("cwd", class_info
, info_proc_cmd_cwd
, _("\
3118 List current working directory of the process."),
3119 &info_proc_cmdlist
);
3121 add_cmd ("cmdline", class_info
, info_proc_cmd_cmdline
, _("\
3122 List command line arguments of the process."),
3123 &info_proc_cmdlist
);
3125 add_cmd ("exe", class_info
, info_proc_cmd_exe
, _("\
3126 List absolute filename for executable of the process."),
3127 &info_proc_cmdlist
);
3129 add_cmd ("all", class_info
, info_proc_cmd_all
, _("\
3130 List all available /proc info."),
3131 &info_proc_cmdlist
);