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. */
237 set_args_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
239 /* CLI has assigned the user-provided value to inferior_args_scratch.
240 Now route it to current inferior. */
241 set_inferior_args (inferior_args_scratch
);
244 /* Notice when `show args' is run. */
247 show_args_command (struct ui_file
*file
, int from_tty
,
248 struct cmd_list_element
*c
, const char *value
)
250 /* Note that we ignore the passed-in value in favor of computing it
252 deprecated_show_value_hack (file
, from_tty
, c
, get_inferior_args ());
256 /* Compute command-line string given argument vector. This does the
257 same shell processing as fork_inferior. */
260 construct_inferior_arguments (int argc
, char **argv
)
264 if (startup_with_shell
)
267 /* This holds all the characters considered special to the
269 char *special
= "\"!&*|[]{}<>?`~^=;, \t\n";
270 const char quote
= '"';
272 /* This holds all the characters considered special to the
273 typical Unix shells. We include `^' because the SunOS
274 /bin/sh treats it as a synonym for `|'. */
275 char *special
= "\"!#$&*()\\|[]{}<>?'`~^; \t\n";
276 const char quote
= '\'';
282 /* We over-compute the size. It shouldn't matter. */
283 for (i
= 0; i
< argc
; ++i
)
284 length
+= 3 * strlen (argv
[i
]) + 1 + 2 * (argv
[i
][0] == '\0');
286 result
= (char *) xmalloc (length
);
289 for (i
= 0; i
< argc
; ++i
)
294 /* Need to handle empty arguments specially. */
295 if (argv
[i
][0] == '\0')
305 if (strpbrk (argv
[i
], special
))
311 for (cp
= argv
[i
]; *cp
; ++cp
)
315 /* A newline cannot be quoted with a backslash (it
316 just disappears), only by putting it inside
327 if (strchr (special
, *cp
) != NULL
)
343 /* In this case we can't handle arguments that contain spaces,
344 tabs, or newlines -- see breakup_args(). */
348 for (i
= 0; i
< argc
; ++i
)
350 char *cp
= strchr (argv
[i
], ' ');
352 cp
= strchr (argv
[i
], '\t');
354 cp
= strchr (argv
[i
], '\n');
356 error (_("can't handle command-line "
357 "argument containing whitespace"));
358 length
+= strlen (argv
[i
]) + 1;
361 result
= (char *) xmalloc (length
);
363 for (i
= 0; i
< argc
; ++i
)
366 strcat (result
, " ");
367 strcat (result
, argv
[i
]);
375 /* This function detects whether or not a '&' character (indicating
376 background execution) has been added as *the last* of the arguments ARGS
377 of a command. If it has, it removes it and returns 1. Otherwise it
378 does nothing and returns 0. */
381 strip_bg_char (char **args
)
385 p
= strchr (*args
, '&');
389 if (p
== (*args
+ strlen (*args
) - 1))
391 if (strlen (*args
) > 1)
395 while (*p
== ' ' || *p
== '\t');
406 /* Common actions to take after creating any sort of inferior, by any
407 means (running, attaching, connecting, et cetera). The target
408 should be stopped. */
411 post_create_inferior (struct target_ops
*target
, int from_tty
)
413 volatile struct gdb_exception ex
;
415 /* Be sure we own the terminal in case write operations are performed. */
416 target_terminal_ours ();
418 /* If the target hasn't taken care of this already, do it now.
419 Targets which need to access registers during to_open,
420 to_create_inferior, or to_attach should do it earlier; but many
422 target_find_description ();
424 /* Now that we know the register layout, retrieve current PC. But
425 if the PC is unavailable (e.g., we're opening a core file with
426 missing registers info), ignore it. */
428 TRY_CATCH (ex
, RETURN_MASK_ERROR
)
430 stop_pc
= regcache_read_pc (get_current_regcache ());
432 if (ex
.reason
< 0 && ex
.error
!= NOT_AVAILABLE_ERROR
)
433 throw_exception (ex
);
437 const unsigned solib_add_generation
438 = current_program_space
->solib_add_generation
;
440 /* Create the hooks to handle shared library load and unload
442 solib_create_inferior_hook (from_tty
);
444 if (current_program_space
->solib_add_generation
== solib_add_generation
)
446 /* The platform-specific hook should load initial shared libraries,
447 but didn't. FROM_TTY will be incorrectly 0 but such solib
448 targets should be fixed anyway. Call it only after the solib
449 target has been initialized by solib_create_inferior_hook. */
452 warning (_("platform-specific solib_create_inferior_hook did "
453 "not load initial shared libraries."));
455 /* If the solist is global across processes, there's no need to
457 if (!gdbarch_has_global_solist (target_gdbarch ()))
458 solib_add (NULL
, 0, target
, auto_solib_add
);
462 /* If the user sets watchpoints before execution having started,
463 then she gets software watchpoints, because GDB can't know which
464 target will end up being pushed, or if it supports hardware
465 watchpoints or not. breakpoint_re_set takes care of promoting
466 watchpoints to hardware watchpoints if possible, however, if this
467 new inferior doesn't load shared libraries or we don't pull in
468 symbols from any other source on this target/arch,
469 breakpoint_re_set is never called. Call it now so that software
470 watchpoints get a chance to be promoted to hardware watchpoints
471 if the now pushed target supports hardware watchpoints. */
472 breakpoint_re_set ();
474 observer_notify_inferior_created (target
, from_tty
);
477 /* Kill the inferior if already running. This function is designed
478 to be called when we are about to start the execution of the program
479 from the beginning. Ask the user to confirm that he wants to restart
480 the program being debugged when FROM_TTY is non-null. */
483 kill_if_already_running (int from_tty
)
485 if (! ptid_equal (inferior_ptid
, null_ptid
) && target_has_execution
)
487 /* Bail out before killing the program if we will not be able to
489 target_require_runnable ();
492 && !query (_("The program being debugged has been started already.\n\
493 Start it from the beginning? ")))
494 error (_("Program not restarted."));
499 /* Prepare for execution command. TARGET is the target that will run
500 the command. BACKGROUND determines whether this is a foreground
501 (synchronous) or background (asynchronous) command. */
504 prepare_execution_command (struct target_ops
*target
, int background
)
506 /* If we get a request for running in the bg but the target
507 doesn't support it, error out. */
508 if (background
&& !target
->to_can_async_p (target
))
509 error (_("Asynchronous execution not supported on this target."));
511 /* If we don't get a request of running in the bg, then we need
512 to simulate synchronous (fg) execution. */
513 if (!background
&& target
->to_can_async_p (target
))
515 /* Simulate synchronous execution. Note no cleanup is necessary
516 for this. stdin is re-enabled whenever an error reaches the
518 async_disable_stdin ();
522 /* Implement the "run" command. If TBREAK_AT_MAIN is set, then insert
523 a temporary breakpoint at the begining of the main program before
524 running the program. */
527 run_command_1 (char *args
, int from_tty
, int tbreak_at_main
)
530 struct cleanup
*old_chain
;
532 struct ui_out
*uiout
= current_uiout
;
533 struct target_ops
*run_target
;
538 kill_if_already_running (from_tty
);
540 init_wait_for_inferior ();
541 clear_breakpoint_hit_counts ();
543 /* Clean up any leftovers from other runs. Some other things from
544 this function should probably be moved into target_pre_inferior. */
545 target_pre_inferior (from_tty
);
547 /* The comment here used to read, "The exec file is re-read every
548 time we do a generic_mourn_inferior, so we just have to worry
549 about the symbol file." The `generic_mourn_inferior' function
550 gets called whenever the program exits. However, suppose the
551 program exits, and *then* the executable file changes? We need
552 to check again here. Since reopen_exec_file doesn't do anything
553 if the timestamp hasn't changed, I don't see the harm. */
558 async_exec
= strip_bg_char (&args
);
560 /* Do validation and preparation before possibly changing anything
563 run_target
= find_run_target ();
565 prepare_execution_command (run_target
, async_exec
);
567 if (non_stop
&& !run_target
->to_supports_non_stop (run_target
))
568 error (_("The target does not support running in non-stop mode."));
570 /* Done. Can now set breakpoints, change inferior args, etc. */
572 /* Insert the temporary breakpoint if a location was specified. */
574 tbreak_command (main_name (), 0);
576 exec_file
= (char *) get_exec_file (0);
578 /* We keep symbols from add-symbol-file, on the grounds that the
579 user might want to add some symbols before running the program
580 (right?). But sometimes (dynamic loading where the user manually
581 introduces the new symbols with add-symbol-file), the code which
582 the symbols describe does not persist between runs. Currently
583 the user has to manually nuke all symbols between runs if they
584 want them to go away (PR 2207). This is probably reasonable. */
586 /* If there were other args, beside '&', process them. */
588 set_inferior_args (args
);
592 ui_out_field_string (uiout
, NULL
, "Starting program");
593 ui_out_text (uiout
, ": ");
595 ui_out_field_string (uiout
, "execfile", exec_file
);
596 ui_out_spaces (uiout
, 1);
597 /* We call get_inferior_args() because we might need to compute
599 ui_out_field_string (uiout
, "infargs", get_inferior_args ());
600 ui_out_text (uiout
, "\n");
601 ui_out_flush (uiout
);
604 /* We call get_inferior_args() because we might need to compute
606 run_target
->to_create_inferior (run_target
, exec_file
, get_inferior_args (),
607 environ_vector (current_inferior ()->environment
),
609 /* to_create_inferior should push the target, so after this point we
610 shouldn't refer to run_target again. */
613 /* We're starting off a new process. When we get out of here, in
614 non-stop mode, finish the state of all threads of that process,
615 but leave other threads alone, as they may be stopped in internal
616 events --- the frontend shouldn't see them as stopped. In
617 all-stop, always finish the state of all threads, as we may be
618 resuming more than just the new process. */
620 ptid
= pid_to_ptid (ptid_get_pid (inferior_ptid
));
622 ptid
= minus_one_ptid
;
623 old_chain
= make_cleanup (finish_thread_state_cleanup
, &ptid
);
625 /* Pass zero for FROM_TTY, because at this point the "run" command
626 has done its thing; now we are setting up the running program. */
627 post_create_inferior (¤t_target
, 0);
629 /* Start the target running. Do not use -1 continuation as it would skip
630 breakpoint right at the entry point. */
631 proceed (regcache_read_pc (get_current_regcache ()), GDB_SIGNAL_0
, 0);
633 /* Since there was no error, there's no need to finish the thread
635 discard_cleanups (old_chain
);
639 run_command (char *args
, int from_tty
)
641 run_command_1 (args
, from_tty
, 0);
645 run_no_args_command (char *args
, int from_tty
)
647 set_inferior_args ("");
651 /* Start the execution of the program up until the beginning of the main
655 start_command (char *args
, int from_tty
)
657 /* Some languages such as Ada need to search inside the program
658 minimal symbols for the location where to put the temporary
659 breakpoint before starting. */
660 if (!have_minimal_symbols ())
661 error (_("No symbol table loaded. Use the \"file\" command."));
663 /* Run the program until reaching the main procedure... */
664 run_command_1 (args
, from_tty
, 1);
668 proceed_thread_callback (struct thread_info
*thread
, void *arg
)
670 /* We go through all threads individually instead of compressing
671 into a single target `resume_all' request, because some threads
672 may be stopped in internal breakpoints/events, or stopped waiting
673 for its turn in the displaced stepping queue (that is, they are
674 running && !executing). The target side has no idea about why
675 the thread is stopped, so a `resume_all' command would resume too
676 much. If/when GDB gains a way to tell the target `hold this
677 thread stopped until I say otherwise', then we can optimize
679 if (!is_stopped (thread
->ptid
))
682 switch_to_thread (thread
->ptid
);
683 clear_proceed_status ();
684 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
689 ensure_valid_thread (void)
691 if (ptid_equal (inferior_ptid
, null_ptid
)
692 || is_exited (inferior_ptid
))
693 error (_("Cannot execute this command without a live selected thread."));
696 /* If the user is looking at trace frames, any resumption of execution
697 is likely to mix up recorded and live target data. So simply
698 disallow those commands. */
701 ensure_not_tfind_mode (void)
703 if (get_traceframe_number () >= 0)
704 error (_("Cannot execute this command while looking at trace frames."));
707 /* Throw an error indicating the current thread is running. */
710 error_is_running (void)
712 error (_("Cannot execute this command while "
713 "the selected thread is running."));
716 /* Calls error_is_running if the current thread is running. */
719 ensure_not_running (void)
721 if (is_running (inferior_ptid
))
726 continue_1 (int all_threads
)
729 ensure_not_tfind_mode ();
731 if (non_stop
&& all_threads
)
733 /* Don't error out if the current thread is running, because
734 there may be other stopped threads. */
735 struct cleanup
*old_chain
;
737 /* Backup current thread and selected frame. */
738 old_chain
= make_cleanup_restore_current_thread ();
740 iterate_over_threads (proceed_thread_callback
, NULL
);
742 /* Restore selected ptid. */
743 do_cleanups (old_chain
);
747 ensure_valid_thread ();
748 ensure_not_running ();
749 clear_proceed_status ();
750 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
754 /* continue [-a] [proceed-count] [&] */
757 continue_command (char *args
, int from_tty
)
763 /* Find out whether we must run in the background. */
765 async_exec
= strip_bg_char (&args
);
767 prepare_execution_command (¤t_target
, async_exec
);
771 if (strncmp (args
, "-a", sizeof ("-a") - 1) == 0)
774 args
+= sizeof ("-a") - 1;
780 if (!non_stop
&& all_threads
)
781 error (_("`-a' is meaningless in all-stop mode."));
783 if (args
!= NULL
&& all_threads
)
784 error (_("Can't resume all threads and specify "
785 "proceed count simultaneously."));
787 /* If we have an argument left, set proceed count of breakpoint we
794 struct thread_info
*tp
;
797 tp
= find_thread_ptid (inferior_ptid
);
801 struct target_waitstatus ws
;
803 get_last_target_status (&last_ptid
, &ws
);
804 tp
= find_thread_ptid (last_ptid
);
807 bs
= tp
->control
.stop_bpstat
;
809 while ((stat
= bpstat_num (&bs
, &num
)) != 0)
812 set_ignore_count (num
,
813 parse_and_eval_long (args
) - 1,
815 /* set_ignore_count prints a message ending with a period.
816 So print two spaces before "Continuing.". */
818 printf_filtered (" ");
822 if (!stopped
&& from_tty
)
825 ("Not stopped at any breakpoint; argument ignored.\n");
830 printf_filtered (_("Continuing.\n"));
832 continue_1 (all_threads
);
835 /* Record the starting point of a "step" or "next" command. */
838 set_step_frame (void)
840 struct symtab_and_line sal
;
842 find_frame_sal (get_current_frame (), &sal
);
843 set_step_info (get_current_frame (), sal
);
846 /* Step until outside of current statement. */
849 step_command (char *count_string
, int from_tty
)
851 step_1 (0, 0, count_string
);
854 /* Likewise, but skip over subroutine calls as if single instructions. */
857 next_command (char *count_string
, int from_tty
)
859 step_1 (1, 0, count_string
);
862 /* Likewise, but step only one instruction. */
865 stepi_command (char *count_string
, int from_tty
)
867 step_1 (0, 1, count_string
);
871 nexti_command (char *count_string
, int from_tty
)
873 step_1 (1, 1, count_string
);
877 delete_longjmp_breakpoint_cleanup (void *arg
)
879 int thread
= * (int *) arg
;
880 delete_longjmp_breakpoint (thread
);
884 step_1 (int skip_subroutines
, int single_inst
, char *count_string
)
887 struct cleanup
*cleanups
= make_cleanup (null_cleanup
, NULL
);
892 ensure_not_tfind_mode ();
893 ensure_valid_thread ();
894 ensure_not_running ();
897 async_exec
= strip_bg_char (&count_string
);
899 prepare_execution_command (¤t_target
, async_exec
);
901 count
= count_string
? parse_and_eval_long (count_string
) : 1;
903 if (!single_inst
|| skip_subroutines
) /* Leave si command alone. */
905 struct thread_info
*tp
= inferior_thread ();
907 if (in_thread_list (inferior_ptid
))
908 thread
= pid_to_thread_id (inferior_ptid
);
910 set_longjmp_breakpoint (tp
, get_frame_id (get_current_frame ()));
912 make_cleanup (delete_longjmp_breakpoint_cleanup
, &thread
);
915 /* In synchronous case, all is well; each step_once call will step once. */
916 if (!target_can_async_p ())
918 for (; count
> 0; count
--)
920 step_once (skip_subroutines
, single_inst
, count
, thread
);
922 if (!target_has_execution
)
926 struct thread_info
*tp
= inferior_thread ();
928 if (!tp
->control
.stop_step
|| !tp
->step_multi
)
930 /* If we stopped for some reason that is not stepping
931 there are no further steps to make. */
938 do_cleanups (cleanups
);
942 /* In the case of an asynchronous target things get complicated;
943 do only one step for now, before returning control to the
944 event loop. Let the continuation figure out how many other
945 steps we need to do, and handle them one at the time, through
947 step_once (skip_subroutines
, single_inst
, count
, thread
);
949 /* We are running, and the continuation is installed. It will
950 disable the longjmp breakpoint as appropriate. */
951 discard_cleanups (cleanups
);
955 struct step_1_continuation_args
958 int skip_subroutines
;
963 /* Called after we are done with one step operation, to check whether
964 we need to step again, before we print the prompt and return control
965 to the user. If count is > 1, we will need to do one more call to
966 proceed(), via step_once(). Basically it is like step_once and
967 step_1_continuation are co-recursive. */
970 step_1_continuation (void *args
, int err
)
972 struct step_1_continuation_args
*a
= args
;
974 if (target_has_execution
)
976 struct thread_info
*tp
;
978 tp
= inferior_thread ();
980 && tp
->step_multi
&& tp
->control
.stop_step
)
982 /* There are more steps to make, and we did stop due to
983 ending a stepping range. Do another step. */
984 step_once (a
->skip_subroutines
, a
->single_inst
,
985 a
->count
- 1, a
->thread
);
991 /* We either hit an error, or stopped for some reason that is
992 not stepping, or there are no further steps to make.
994 if (!a
->single_inst
|| a
->skip_subroutines
)
995 delete_longjmp_breakpoint (a
->thread
);
998 /* Do just one step operation. This is useful to implement the 'step
999 n' kind of commands. In case of asynchronous targets, we will have
1000 to set up a continuation to be done after the target stops (after
1001 this one step). For synch targets, the caller handles further
1005 step_once (int skip_subroutines
, int single_inst
, int count
, int thread
)
1007 struct frame_info
*frame
= get_current_frame ();
1011 /* Don't assume THREAD is a valid thread id. It is set to -1 if
1012 the longjmp breakpoint was not required. Use the
1013 INFERIOR_PTID thread instead, which is the same thread when
1015 struct thread_info
*tp
= inferior_thread ();
1017 clear_proceed_status ();
1024 /* Step at an inlined function behaves like "down". */
1025 if (!skip_subroutines
1026 && inline_skipped_frames (inferior_ptid
))
1030 /* Pretend that we've ran. */
1031 resume_ptid
= user_visible_resume_ptid (1);
1032 set_running (resume_ptid
, 1);
1034 step_into_inline_frame (inferior_ptid
);
1036 step_once (skip_subroutines
, single_inst
, count
- 1, thread
);
1039 /* Pretend that we've stopped. */
1042 if (target_can_async_p ())
1043 inferior_event_handler (INF_EXEC_COMPLETE
, NULL
);
1048 pc
= get_frame_pc (frame
);
1049 find_pc_line_pc_range (pc
,
1050 &tp
->control
.step_range_start
,
1051 &tp
->control
.step_range_end
);
1053 tp
->control
.may_range_step
= 1;
1055 /* If we have no line info, switch to stepi mode. */
1056 if (tp
->control
.step_range_end
== 0 && step_stop_if_no_debug
)
1058 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1059 tp
->control
.may_range_step
= 0;
1061 else if (tp
->control
.step_range_end
== 0)
1065 if (find_pc_partial_function (pc
, &name
,
1066 &tp
->control
.step_range_start
,
1067 &tp
->control
.step_range_end
) == 0)
1068 error (_("Cannot find bounds of current function"));
1070 target_terminal_ours ();
1071 printf_filtered (_("Single stepping until exit from function %s,"
1072 "\nwhich has no line number information.\n"),
1078 /* Say we are stepping, but stop after one insn whatever it does. */
1079 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1080 if (!skip_subroutines
)
1082 Don't step over function calls, not even to functions lacking
1084 tp
->control
.step_over_calls
= STEP_OVER_NONE
;
1087 if (skip_subroutines
)
1088 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1090 tp
->step_multi
= (count
> 1);
1091 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 1);
1093 /* For async targets, register a continuation to do any
1094 additional steps. For sync targets, the caller will handle
1095 further stepping. */
1096 if (target_can_async_p ())
1098 struct step_1_continuation_args
*args
;
1100 args
= xmalloc (sizeof (*args
));
1101 args
->skip_subroutines
= skip_subroutines
;
1102 args
->single_inst
= single_inst
;
1103 args
->count
= count
;
1104 args
->thread
= thread
;
1106 add_intermediate_continuation (tp
, step_1_continuation
, args
, xfree
);
1112 /* Continue program at specified address. */
1115 jump_command (char *arg
, int from_tty
)
1117 struct gdbarch
*gdbarch
= get_current_arch ();
1119 struct symtabs_and_lines sals
;
1120 struct symtab_and_line sal
;
1126 ensure_not_tfind_mode ();
1127 ensure_valid_thread ();
1128 ensure_not_running ();
1130 /* Find out whether we must run in the background. */
1132 async_exec
= strip_bg_char (&arg
);
1134 prepare_execution_command (¤t_target
, async_exec
);
1137 error_no_arg (_("starting address"));
1139 sals
= decode_line_with_last_displayed (arg
, DECODE_LINE_FUNFIRSTLINE
);
1140 if (sals
.nelts
!= 1)
1142 error (_("Unreasonable jump request"));
1148 if (sal
.symtab
== 0 && sal
.pc
== 0)
1149 error (_("No source file has been specified."));
1151 resolve_sal_pc (&sal
); /* May error out. */
1153 /* See if we are trying to jump to another function. */
1154 fn
= get_frame_function (get_current_frame ());
1155 sfn
= find_pc_function (sal
.pc
);
1156 if (fn
!= NULL
&& sfn
!= fn
)
1158 if (!query (_("Line %d is not in `%s'. Jump anyway? "), sal
.line
,
1159 SYMBOL_PRINT_NAME (fn
)))
1161 error (_("Not confirmed."));
1168 fixup_symbol_section (sfn
, 0);
1169 if (section_is_overlay (SYMBOL_OBJ_SECTION (SYMBOL_OBJFILE (sfn
), sfn
)) &&
1170 !section_is_mapped (SYMBOL_OBJ_SECTION (SYMBOL_OBJFILE (sfn
), sfn
)))
1172 if (!query (_("WARNING!!! Destination is in "
1173 "unmapped overlay! Jump anyway? ")))
1175 error (_("Not confirmed."));
1185 printf_filtered (_("Continuing at "));
1186 fputs_filtered (paddress (gdbarch
, addr
), gdb_stdout
);
1187 printf_filtered (".\n");
1190 clear_proceed_status ();
1191 proceed (addr
, GDB_SIGNAL_0
, 0);
1195 /* Go to line or address in current procedure. */
1198 go_command (char *line_no
, int from_tty
)
1200 if (line_no
== (char *) NULL
|| !*line_no
)
1201 printf_filtered (_("Usage: go <location>\n"));
1204 tbreak_command (line_no
, from_tty
);
1205 jump_command (line_no
, from_tty
);
1210 /* Continue program giving it specified signal. */
1213 signal_command (char *signum_exp
, int from_tty
)
1215 enum gdb_signal oursig
;
1218 dont_repeat (); /* Too dangerous. */
1220 ensure_not_tfind_mode ();
1221 ensure_valid_thread ();
1222 ensure_not_running ();
1224 /* Find out whether we must run in the background. */
1225 if (signum_exp
!= NULL
)
1226 async_exec
= strip_bg_char (&signum_exp
);
1228 prepare_execution_command (¤t_target
, async_exec
);
1231 error_no_arg (_("signal number"));
1233 /* It would be even slicker to make signal names be valid expressions,
1234 (the type could be "enum $signal" or some such), then the user could
1235 assign them to convenience variables. */
1236 oursig
= gdb_signal_from_name (signum_exp
);
1238 if (oursig
== GDB_SIGNAL_UNKNOWN
)
1240 /* No, try numeric. */
1241 int num
= parse_and_eval_long (signum_exp
);
1244 oursig
= GDB_SIGNAL_0
;
1246 oursig
= gdb_signal_from_command (num
);
1251 if (oursig
== GDB_SIGNAL_0
)
1252 printf_filtered (_("Continuing with no signal.\n"));
1254 printf_filtered (_("Continuing with signal %s.\n"),
1255 gdb_signal_to_name (oursig
));
1258 clear_proceed_status ();
1259 proceed ((CORE_ADDR
) -1, oursig
, 0);
1262 /* Continuation args to be passed to the "until" command
1264 struct until_next_continuation_args
1266 /* The thread that was current when the command was executed. */
1270 /* A continuation callback for until_next_command. */
1273 until_next_continuation (void *arg
, int err
)
1275 struct until_next_continuation_args
*a
= arg
;
1277 delete_longjmp_breakpoint (a
->thread
);
1280 /* Proceed until we reach a different source line with pc greater than
1281 our current one or exit the function. We skip calls in both cases.
1283 Note that eventually this command should probably be changed so
1284 that only source lines are printed out when we hit the breakpoint
1285 we set. This may involve changes to wait_for_inferior and the
1286 proceed status code. */
1289 until_next_command (int from_tty
)
1291 struct frame_info
*frame
;
1293 struct symbol
*func
;
1294 struct symtab_and_line sal
;
1295 struct thread_info
*tp
= inferior_thread ();
1296 int thread
= tp
->num
;
1297 struct cleanup
*old_chain
;
1299 clear_proceed_status ();
1302 frame
= get_current_frame ();
1304 /* Step until either exited from this function or greater
1305 than the current line (if in symbolic section) or pc (if
1308 pc
= get_frame_pc (frame
);
1309 func
= find_pc_function (pc
);
1313 struct bound_minimal_symbol msymbol
= lookup_minimal_symbol_by_pc (pc
);
1315 if (msymbol
.minsym
== NULL
)
1316 error (_("Execution is not within a known function."));
1318 tp
->control
.step_range_start
= BMSYMBOL_VALUE_ADDRESS (msymbol
);
1319 tp
->control
.step_range_end
= pc
;
1323 sal
= find_pc_line (pc
, 0);
1325 tp
->control
.step_range_start
= BLOCK_START (SYMBOL_BLOCK_VALUE (func
));
1326 tp
->control
.step_range_end
= sal
.end
;
1328 tp
->control
.may_range_step
= 1;
1330 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1332 tp
->step_multi
= 0; /* Only one call to proceed */
1334 set_longjmp_breakpoint (tp
, get_frame_id (frame
));
1335 old_chain
= make_cleanup (delete_longjmp_breakpoint_cleanup
, &thread
);
1337 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 1);
1339 if (target_can_async_p () && is_running (inferior_ptid
))
1341 struct until_next_continuation_args
*cont_args
;
1343 discard_cleanups (old_chain
);
1344 cont_args
= XNEW (struct until_next_continuation_args
);
1345 cont_args
->thread
= inferior_thread ()->num
;
1347 add_continuation (tp
, until_next_continuation
, cont_args
, xfree
);
1350 do_cleanups (old_chain
);
1354 until_command (char *arg
, int from_tty
)
1359 ensure_not_tfind_mode ();
1360 ensure_valid_thread ();
1361 ensure_not_running ();
1363 /* Find out whether we must run in the background. */
1365 async_exec
= strip_bg_char (&arg
);
1367 prepare_execution_command (¤t_target
, async_exec
);
1370 until_break_command (arg
, from_tty
, 0);
1372 until_next_command (from_tty
);
1376 advance_command (char *arg
, int from_tty
)
1381 ensure_not_tfind_mode ();
1382 ensure_valid_thread ();
1383 ensure_not_running ();
1386 error_no_arg (_("a location"));
1388 /* Find out whether we must run in the background. */
1390 async_exec
= strip_bg_char (&arg
);
1392 prepare_execution_command (¤t_target
, async_exec
);
1394 until_break_command (arg
, from_tty
, 1);
1397 /* Return the value of the result of a function at the end of a 'finish'
1401 get_return_value (struct value
*function
, struct type
*value_type
)
1403 struct regcache
*stop_regs
= stop_registers
;
1404 struct gdbarch
*gdbarch
;
1405 struct value
*value
;
1406 struct cleanup
*cleanup
= make_cleanup (null_cleanup
, NULL
);
1408 /* If stop_registers were not saved, use the current registers. */
1411 stop_regs
= regcache_dup (get_current_regcache ());
1412 make_cleanup_regcache_xfree (stop_regs
);
1415 gdbarch
= get_regcache_arch (stop_regs
);
1417 CHECK_TYPEDEF (value_type
);
1418 gdb_assert (TYPE_CODE (value_type
) != TYPE_CODE_VOID
);
1420 /* FIXME: 2003-09-27: When returning from a nested inferior function
1421 call, it's possible (with no help from the architecture vector)
1422 to locate and return/print a "struct return" value. This is just
1423 a more complicated case of what is already being done in the
1424 inferior function call code. In fact, when inferior function
1425 calls are made async, this will likely be made the norm. */
1427 switch (gdbarch_return_value (gdbarch
, function
, value_type
,
1430 case RETURN_VALUE_REGISTER_CONVENTION
:
1431 case RETURN_VALUE_ABI_RETURNS_ADDRESS
:
1432 case RETURN_VALUE_ABI_PRESERVES_ADDRESS
:
1433 value
= allocate_value (value_type
);
1434 gdbarch_return_value (gdbarch
, function
, value_type
, stop_regs
,
1435 value_contents_raw (value
), NULL
);
1437 case RETURN_VALUE_STRUCT_CONVENTION
:
1441 internal_error (__FILE__
, __LINE__
, _("bad switch"));
1444 do_cleanups (cleanup
);
1449 /* Print the result of a function at the end of a 'finish' command. */
1452 print_return_value (struct value
*function
, struct type
*value_type
)
1454 struct value
*value
= get_return_value (function
, value_type
);
1455 struct ui_out
*uiout
= current_uiout
;
1459 struct value_print_options opts
;
1460 struct ui_file
*stb
;
1461 struct cleanup
*old_chain
;
1464 stb
= mem_fileopen ();
1465 old_chain
= make_cleanup_ui_file_delete (stb
);
1466 ui_out_text (uiout
, "Value returned is ");
1467 ui_out_field_fmt (uiout
, "gdb-result-var", "$%d",
1468 record_latest_value (value
));
1469 ui_out_text (uiout
, " = ");
1470 get_no_prettyformat_print_options (&opts
);
1471 value_print (value
, stb
, &opts
);
1472 ui_out_field_stream (uiout
, "return-value", stb
);
1473 ui_out_text (uiout
, "\n");
1474 do_cleanups (old_chain
);
1478 ui_out_text (uiout
, "Value returned has type: ");
1479 ui_out_field_string (uiout
, "return-type", TYPE_NAME (value_type
));
1480 ui_out_text (uiout
, ".");
1481 ui_out_text (uiout
, " Cannot determine contents\n");
1485 /* Stuff that needs to be done by the finish command after the target
1486 has stopped. In asynchronous mode, we wait for the target to stop
1487 in the call to poll or select in the event loop, so it is
1488 impossible to do all the stuff as part of the finish_command
1489 function itself. The only chance we have to complete this command
1490 is in fetch_inferior_event, which is called by the event loop as
1491 soon as it detects that the target has stopped. */
1493 struct finish_command_continuation_args
1495 /* The thread that as current when the command was executed. */
1497 struct breakpoint
*breakpoint
;
1498 struct symbol
*function
;
1502 finish_command_continuation (void *arg
, int err
)
1504 struct finish_command_continuation_args
*a
= arg
;
1508 struct thread_info
*tp
= NULL
;
1511 if (!ptid_equal (inferior_ptid
, null_ptid
)
1512 && target_has_execution
1513 && is_stopped (inferior_ptid
))
1515 tp
= inferior_thread ();
1516 bs
= tp
->control
.stop_bpstat
;
1519 if (bpstat_find_breakpoint (bs
, a
->breakpoint
) != NULL
1520 && a
->function
!= NULL
)
1522 struct type
*value_type
;
1524 value_type
= TYPE_TARGET_TYPE (SYMBOL_TYPE (a
->function
));
1526 internal_error (__FILE__
, __LINE__
,
1527 _("finish_command: function has no target type"));
1529 if (TYPE_CODE (value_type
) != TYPE_CODE_VOID
)
1531 volatile struct gdb_exception ex
;
1534 func
= read_var_value (a
->function
, get_current_frame ());
1535 TRY_CATCH (ex
, RETURN_MASK_ALL
)
1537 /* print_return_value can throw an exception in some
1538 circumstances. We need to catch this so that we still
1539 delete the breakpoint. */
1540 print_return_value (func
, value_type
);
1543 exception_print (gdb_stdout
, ex
);
1547 /* We suppress normal call of normal_stop observer and do it
1548 here so that the *stopped notification includes the return
1550 if (bs
!= NULL
&& tp
->control
.proceed_to_finish
)
1551 observer_notify_normal_stop (bs
, 1 /* print frame */);
1554 delete_breakpoint (a
->breakpoint
);
1555 delete_longjmp_breakpoint (a
->thread
);
1559 finish_command_continuation_free_arg (void *arg
)
1564 /* finish_backward -- helper function for finish_command. */
1567 finish_backward (struct symbol
*function
)
1569 struct symtab_and_line sal
;
1570 struct thread_info
*tp
= inferior_thread ();
1572 CORE_ADDR func_addr
;
1574 pc
= get_frame_pc (get_current_frame ());
1576 if (find_pc_partial_function (pc
, NULL
, &func_addr
, NULL
) == 0)
1577 internal_error (__FILE__
, __LINE__
,
1578 _("Finish: couldn't find function."));
1580 sal
= find_pc_line (func_addr
, 0);
1582 tp
->control
.proceed_to_finish
= 1;
1583 /* Special case: if we're sitting at the function entry point,
1584 then all we need to do is take a reverse singlestep. We
1585 don't need to set a breakpoint, and indeed it would do us
1588 Note that this can only happen at frame #0, since there's
1589 no way that a function up the stack can have a return address
1590 that's equal to its entry point. */
1594 struct frame_info
*frame
= get_selected_frame (NULL
);
1595 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
1596 struct symtab_and_line sr_sal
;
1598 /* Set a step-resume at the function's entry point. Once that's
1599 hit, we'll do one more step backwards. */
1602 sr_sal
.pspace
= get_frame_program_space (frame
);
1603 insert_step_resume_breakpoint_at_sal (gdbarch
,
1604 sr_sal
, null_frame_id
);
1606 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
1610 /* We're almost there -- we just need to back up by one more
1612 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1613 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 1);
1617 /* finish_forward -- helper function for finish_command. */
1620 finish_forward (struct symbol
*function
, struct frame_info
*frame
)
1622 struct frame_id frame_id
= get_frame_id (frame
);
1623 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
1624 struct symtab_and_line sal
;
1625 struct thread_info
*tp
= inferior_thread ();
1626 struct breakpoint
*breakpoint
;
1627 struct cleanup
*old_chain
;
1628 struct finish_command_continuation_args
*cargs
;
1629 int thread
= tp
->num
;
1631 sal
= find_pc_line (get_frame_pc (frame
), 0);
1632 sal
.pc
= get_frame_pc (frame
);
1634 breakpoint
= set_momentary_breakpoint (gdbarch
, sal
,
1635 get_stack_frame_id (frame
),
1638 /* set_momentary_breakpoint invalidates FRAME. */
1641 old_chain
= make_cleanup_delete_breakpoint (breakpoint
);
1643 set_longjmp_breakpoint (tp
, frame_id
);
1644 make_cleanup (delete_longjmp_breakpoint_cleanup
, &thread
);
1646 /* We want stop_registers, please... */
1647 tp
->control
.proceed_to_finish
= 1;
1648 cargs
= xmalloc (sizeof (*cargs
));
1650 cargs
->thread
= thread
;
1651 cargs
->breakpoint
= breakpoint
;
1652 cargs
->function
= function
;
1653 add_continuation (tp
, finish_command_continuation
, cargs
,
1654 finish_command_continuation_free_arg
);
1655 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
1657 discard_cleanups (old_chain
);
1658 if (!target_can_async_p ())
1659 do_all_continuations (0);
1662 /* "finish": Set a temporary breakpoint at the place the selected
1663 frame will return to, then continue. */
1666 finish_command (char *arg
, int from_tty
)
1668 struct frame_info
*frame
;
1669 struct symbol
*function
;
1674 ensure_not_tfind_mode ();
1675 ensure_valid_thread ();
1676 ensure_not_running ();
1678 /* Find out whether we must run in the background. */
1680 async_exec
= strip_bg_char (&arg
);
1682 prepare_execution_command (¤t_target
, async_exec
);
1685 error (_("The \"finish\" command does not take any arguments."));
1687 frame
= get_prev_frame (get_selected_frame (_("No selected frame.")));
1689 error (_("\"finish\" not meaningful in the outermost frame."));
1691 clear_proceed_status ();
1693 /* Finishing from an inline frame is completely different. We don't
1694 try to show the "return value" - no way to locate it. So we do
1695 not need a completion. */
1696 if (get_frame_type (get_selected_frame (_("No selected frame.")))
1699 /* Claim we are stepping in the calling frame. An empty step
1700 range means that we will stop once we aren't in a function
1701 called by that frame. We don't use the magic "1" value for
1702 step_range_end, because then infrun will think this is nexti,
1703 and not step over the rest of this inlined function call. */
1704 struct thread_info
*tp
= inferior_thread ();
1705 struct symtab_and_line empty_sal
;
1707 init_sal (&empty_sal
);
1708 set_step_info (frame
, empty_sal
);
1709 tp
->control
.step_range_start
= get_frame_pc (frame
);
1710 tp
->control
.step_range_end
= tp
->control
.step_range_start
;
1711 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1713 /* Print info on the selected frame, including level number but not
1717 printf_filtered (_("Run till exit from "));
1718 print_stack_frame (get_selected_frame (NULL
), 1, LOCATION
, 0);
1721 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 1);
1725 /* Ignore TAILCALL_FRAME type frames, they were executed already before
1726 entering THISFRAME. */
1727 while (get_frame_type (frame
) == TAILCALL_FRAME
)
1728 frame
= get_prev_frame (frame
);
1730 /* Find the function we will return from. */
1732 function
= find_pc_function (get_frame_pc (get_selected_frame (NULL
)));
1734 /* Print info on the selected frame, including level number but not
1738 if (execution_direction
== EXEC_REVERSE
)
1739 printf_filtered (_("Run back to call of "));
1741 printf_filtered (_("Run till exit from "));
1743 print_stack_frame (get_selected_frame (NULL
), 1, LOCATION
, 0);
1746 if (execution_direction
== EXEC_REVERSE
)
1747 finish_backward (function
);
1749 finish_forward (function
, frame
);
1754 program_info (char *args
, int from_tty
)
1758 struct thread_info
*tp
;
1761 if (!target_has_execution
)
1763 printf_filtered (_("The program being debugged is not being run.\n"));
1768 ptid
= inferior_ptid
;
1771 struct target_waitstatus ws
;
1773 get_last_target_status (&ptid
, &ws
);
1776 if (ptid_equal (ptid
, null_ptid
) || is_exited (ptid
))
1777 error (_("Invalid selected thread."));
1778 else if (is_running (ptid
))
1779 error (_("Selected thread is running."));
1781 tp
= find_thread_ptid (ptid
);
1782 bs
= tp
->control
.stop_bpstat
;
1783 stat
= bpstat_num (&bs
, &num
);
1785 target_files_info ();
1786 printf_filtered (_("Program stopped at %s.\n"),
1787 paddress (target_gdbarch (), stop_pc
));
1788 if (tp
->control
.stop_step
)
1789 printf_filtered (_("It stopped after being stepped.\n"));
1792 /* There may be several breakpoints in the same place, so this
1793 isn't as strange as it seems. */
1798 printf_filtered (_("It stopped at a breakpoint "
1799 "that has since been deleted.\n"));
1802 printf_filtered (_("It stopped at breakpoint %d.\n"), num
);
1803 stat
= bpstat_num (&bs
, &num
);
1806 else if (tp
->suspend
.stop_signal
!= GDB_SIGNAL_0
)
1808 printf_filtered (_("It stopped with signal %s, %s.\n"),
1809 gdb_signal_to_name (tp
->suspend
.stop_signal
),
1810 gdb_signal_to_string (tp
->suspend
.stop_signal
));
1815 printf_filtered (_("Type \"info stack\" or \"info "
1816 "registers\" for more information.\n"));
1821 environment_info (char *var
, int from_tty
)
1825 char *val
= get_in_environ (current_inferior ()->environment
, var
);
1829 puts_filtered (var
);
1830 puts_filtered (" = ");
1831 puts_filtered (val
);
1832 puts_filtered ("\n");
1836 puts_filtered ("Environment variable \"");
1837 puts_filtered (var
);
1838 puts_filtered ("\" not defined.\n");
1843 char **vector
= environ_vector (current_inferior ()->environment
);
1847 puts_filtered (*vector
++);
1848 puts_filtered ("\n");
1854 set_environment_command (char *arg
, int from_tty
)
1856 char *p
, *val
, *var
;
1860 error_no_arg (_("environment variable and value"));
1862 /* Find seperation between variable name and value. */
1863 p
= (char *) strchr (arg
, '=');
1864 val
= (char *) strchr (arg
, ' ');
1866 if (p
!= 0 && val
!= 0)
1868 /* We have both a space and an equals. If the space is before the
1869 equals, walk forward over the spaces til we see a nonspace
1870 (possibly the equals). */
1875 /* Now if the = is after the char following the spaces,
1876 take the char following the spaces. */
1880 else if (val
!= 0 && p
== 0)
1884 error_no_arg (_("environment variable to set"));
1886 if (p
== 0 || p
[1] == 0)
1890 p
= arg
+ strlen (arg
); /* So that savestring below will work. */
1894 /* Not setting variable value to null. */
1896 while (*val
== ' ' || *val
== '\t')
1900 while (p
!= arg
&& (p
[-1] == ' ' || p
[-1] == '\t'))
1903 var
= savestring (arg
, p
- arg
);
1906 printf_filtered (_("Setting environment variable "
1907 "\"%s\" to null value.\n"),
1909 set_in_environ (current_inferior ()->environment
, var
, "");
1912 set_in_environ (current_inferior ()->environment
, var
, val
);
1917 unset_environment_command (char *var
, int from_tty
)
1921 /* If there is no argument, delete all environment variables.
1922 Ask for confirmation if reading from the terminal. */
1923 if (!from_tty
|| query (_("Delete all environment variables? ")))
1925 free_environ (current_inferior ()->environment
);
1926 current_inferior ()->environment
= make_environ ();
1930 unset_in_environ (current_inferior ()->environment
, var
);
1933 /* Handle the execution path (PATH variable). */
1935 static const char path_var_name
[] = "PATH";
1938 path_info (char *args
, int from_tty
)
1940 puts_filtered ("Executable and object file path: ");
1941 puts_filtered (get_in_environ (current_inferior ()->environment
,
1943 puts_filtered ("\n");
1946 /* Add zero or more directories to the front of the execution path. */
1949 path_command (char *dirname
, int from_tty
)
1955 env
= get_in_environ (current_inferior ()->environment
, path_var_name
);
1956 /* Can be null if path is not set. */
1959 exec_path
= xstrdup (env
);
1960 mod_path (dirname
, &exec_path
);
1961 set_in_environ (current_inferior ()->environment
, path_var_name
, exec_path
);
1964 path_info ((char *) NULL
, from_tty
);
1968 /* Print out the register NAME with value VAL, to FILE, in the default
1972 default_print_one_register_info (struct ui_file
*file
,
1976 struct type
*regtype
= value_type (val
);
1977 int print_raw_format
;
1979 fputs_filtered (name
, file
);
1980 print_spaces_filtered (15 - strlen (name
), file
);
1982 print_raw_format
= (value_entirely_available (val
)
1983 && !value_optimized_out (val
));
1985 /* If virtual format is floating, print it that way, and in raw
1987 if (TYPE_CODE (regtype
) == TYPE_CODE_FLT
1988 || TYPE_CODE (regtype
) == TYPE_CODE_DECFLOAT
)
1991 struct value_print_options opts
;
1992 const gdb_byte
*valaddr
= value_contents_for_printing (val
);
1993 enum bfd_endian byte_order
= gdbarch_byte_order (get_type_arch (regtype
));
1995 get_user_print_options (&opts
);
1999 value_contents_for_printing (val
),
2000 value_embedded_offset (val
), 0,
2001 file
, 0, val
, &opts
, current_language
);
2003 if (print_raw_format
)
2005 fprintf_filtered (file
, "\t(raw ");
2006 print_hex_chars (file
, valaddr
, TYPE_LENGTH (regtype
), byte_order
);
2007 fprintf_filtered (file
, ")");
2012 struct value_print_options opts
;
2014 /* Print the register in hex. */
2015 get_formatted_print_options (&opts
, 'x');
2018 value_contents_for_printing (val
),
2019 value_embedded_offset (val
), 0,
2020 file
, 0, val
, &opts
, current_language
);
2021 /* If not a vector register, print it also according to its
2023 if (print_raw_format
&& TYPE_VECTOR (regtype
) == 0)
2025 get_user_print_options (&opts
);
2027 fprintf_filtered (file
, "\t");
2029 value_contents_for_printing (val
),
2030 value_embedded_offset (val
), 0,
2031 file
, 0, val
, &opts
, current_language
);
2035 fprintf_filtered (file
, "\n");
2038 /* Print out the machine register regnum. If regnum is -1, print all
2039 registers (print_all == 1) or all non-float and non-vector
2040 registers (print_all == 0).
2042 For most machines, having all_registers_info() print the
2043 register(s) one per line is good enough. If a different format is
2044 required, (eg, for MIPS or Pyramid 90x, which both have lots of
2045 regs), or there is an existing convention for showing all the
2046 registers, define the architecture method PRINT_REGISTERS_INFO to
2047 provide that format. */
2050 default_print_registers_info (struct gdbarch
*gdbarch
,
2051 struct ui_file
*file
,
2052 struct frame_info
*frame
,
2053 int regnum
, int print_all
)
2056 const int numregs
= gdbarch_num_regs (gdbarch
)
2057 + gdbarch_num_pseudo_regs (gdbarch
);
2059 for (i
= 0; i
< numregs
; i
++)
2061 /* Decide between printing all regs, non-float / vector regs, or
2067 if (!gdbarch_register_reggroup_p (gdbarch
, i
, all_reggroup
))
2072 if (!gdbarch_register_reggroup_p (gdbarch
, i
, general_reggroup
))
2082 /* If the register name is empty, it is undefined for this
2083 processor, so don't display anything. */
2084 if (gdbarch_register_name (gdbarch
, i
) == NULL
2085 || *(gdbarch_register_name (gdbarch
, i
)) == '\0')
2088 default_print_one_register_info (file
,
2089 gdbarch_register_name (gdbarch
, i
),
2090 value_of_register (i
, frame
));
2095 registers_info (char *addr_exp
, int fpregs
)
2097 struct frame_info
*frame
;
2098 struct gdbarch
*gdbarch
;
2100 if (!target_has_registers
)
2101 error (_("The program has no registers now."));
2102 frame
= get_selected_frame (NULL
);
2103 gdbarch
= get_frame_arch (frame
);
2107 gdbarch_print_registers_info (gdbarch
, gdb_stdout
,
2112 while (*addr_exp
!= '\0')
2117 /* Skip leading white space. */
2118 addr_exp
= skip_spaces (addr_exp
);
2120 /* Discard any leading ``$''. Check that there is something
2121 resembling a register following it. */
2122 if (addr_exp
[0] == '$')
2124 if (isspace ((*addr_exp
)) || (*addr_exp
) == '\0')
2125 error (_("Missing register name"));
2127 /* Find the start/end of this register name/num/group. */
2129 while ((*addr_exp
) != '\0' && !isspace ((*addr_exp
)))
2133 /* Figure out what we've found and display it. */
2135 /* A register name? */
2137 int regnum
= user_reg_map_name_to_regnum (gdbarch
, start
, end
- start
);
2141 /* User registers lie completely outside of the range of
2142 normal registers. Catch them early so that the target
2144 if (regnum
>= gdbarch_num_regs (gdbarch
)
2145 + gdbarch_num_pseudo_regs (gdbarch
))
2147 struct value
*regval
= value_of_user_reg (regnum
, frame
);
2148 const char *regname
= user_reg_map_regnum_to_name (gdbarch
,
2151 /* Print in the same fashion
2152 gdbarch_print_registers_info's default
2153 implementation prints. */
2154 default_print_one_register_info (gdb_stdout
,
2159 gdbarch_print_registers_info (gdbarch
, gdb_stdout
,
2160 frame
, regnum
, fpregs
);
2165 /* A register group? */
2167 struct reggroup
*group
;
2169 for (group
= reggroup_next (gdbarch
, NULL
);
2171 group
= reggroup_next (gdbarch
, group
))
2173 /* Don't bother with a length check. Should the user
2174 enter a short register group name, go with the first
2175 group that matches. */
2176 if (strncmp (start
, reggroup_name (group
), end
- start
) == 0)
2184 regnum
< gdbarch_num_regs (gdbarch
)
2185 + gdbarch_num_pseudo_regs (gdbarch
);
2188 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, group
))
2189 gdbarch_print_registers_info (gdbarch
,
2197 /* Nothing matched. */
2198 error (_("Invalid register `%.*s'"), (int) (end
- start
), start
);
2203 all_registers_info (char *addr_exp
, int from_tty
)
2205 registers_info (addr_exp
, 1);
2209 nofp_registers_info (char *addr_exp
, int from_tty
)
2211 registers_info (addr_exp
, 0);
2215 print_vector_info (struct ui_file
*file
,
2216 struct frame_info
*frame
, const char *args
)
2218 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
2220 if (gdbarch_print_vector_info_p (gdbarch
))
2221 gdbarch_print_vector_info (gdbarch
, file
, frame
, args
);
2225 int printed_something
= 0;
2228 regnum
< gdbarch_num_regs (gdbarch
)
2229 + gdbarch_num_pseudo_regs (gdbarch
);
2232 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, vector_reggroup
))
2234 printed_something
= 1;
2235 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
2238 if (!printed_something
)
2239 fprintf_filtered (file
, "No vector information\n");
2244 vector_info (char *args
, int from_tty
)
2246 if (!target_has_registers
)
2247 error (_("The program has no registers now."));
2249 print_vector_info (gdb_stdout
, get_selected_frame (NULL
), args
);
2252 /* Kill the inferior process. Make us have no inferior. */
2255 kill_command (char *arg
, int from_tty
)
2257 /* FIXME: This should not really be inferior_ptid (or target_has_execution).
2258 It should be a distinct flag that indicates that a target is active, cuz
2259 some targets don't have processes! */
2261 if (ptid_equal (inferior_ptid
, null_ptid
))
2262 error (_("The program is not being run."));
2263 if (!query (_("Kill the program being debugged? ")))
2264 error (_("Not confirmed."));
2267 /* If we still have other inferiors to debug, then don't mess with
2268 with their threads. */
2269 if (!have_inferiors ())
2271 init_thread_list (); /* Destroy thread info. */
2273 /* Killing off the inferior can leave us with a core file. If
2274 so, print the state we are left in. */
2275 if (target_has_stack
)
2277 printf_filtered (_("In %s,\n"), target_longname
);
2278 print_stack_frame (get_selected_frame (NULL
), 1, SRC_AND_LOC
, 1);
2281 bfd_cache_close_all ();
2284 /* Used in `attach&' command. ARG is a point to an integer
2285 representing a process id. Proceed threads of this process iff
2286 they stopped due to debugger request, and when they did, they
2287 reported a clean stop (GDB_SIGNAL_0). Do not proceed threads
2288 that have been explicitly been told to stop. */
2291 proceed_after_attach_callback (struct thread_info
*thread
,
2294 int pid
= * (int *) arg
;
2296 if (ptid_get_pid (thread
->ptid
) == pid
2297 && !is_exited (thread
->ptid
)
2298 && !is_executing (thread
->ptid
)
2299 && !thread
->stop_requested
2300 && thread
->suspend
.stop_signal
== GDB_SIGNAL_0
)
2302 switch_to_thread (thread
->ptid
);
2303 clear_proceed_status ();
2304 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
2311 proceed_after_attach (int pid
)
2313 /* Don't error out if the current thread is running, because
2314 there may be other stopped threads. */
2315 struct cleanup
*old_chain
;
2317 /* Backup current thread and selected frame. */
2318 old_chain
= make_cleanup_restore_current_thread ();
2320 iterate_over_threads (proceed_after_attach_callback
, &pid
);
2322 /* Restore selected ptid. */
2323 do_cleanups (old_chain
);
2328 * Should save/restore the tty state since it might be that the
2329 * program to be debugged was started on this tty and it wants
2330 * the tty in some state other than what we want. If it's running
2331 * on another terminal or without a terminal, then saving and
2332 * restoring the tty state is a harmless no-op.
2333 * This only needs to be done if we are attaching to a process.
2336 /* attach_command --
2337 takes a program started up outside of gdb and ``attaches'' to it.
2338 This stops it cold in its tracks and allows us to start debugging it.
2339 and wait for the trace-trap that results from attaching. */
2342 attach_command_post_wait (char *args
, int from_tty
, int async_exec
)
2345 char *full_exec_path
= NULL
;
2346 struct inferior
*inferior
;
2348 inferior
= current_inferior ();
2349 inferior
->control
.stop_soon
= NO_STOP_QUIETLY
;
2351 /* If no exec file is yet known, try to determine it from the
2353 exec_file
= (char *) get_exec_file (0);
2356 exec_file
= target_pid_to_exec_file (ptid_get_pid (inferior_ptid
));
2359 /* It's possible we don't have a full path, but rather just a
2360 filename. Some targets, such as HP-UX, don't provide the
2363 Attempt to qualify the filename against the source path.
2364 (If that fails, we'll just fall back on the original
2365 filename. Not much more we can do...) */
2367 if (!source_full_path_of (exec_file
, &full_exec_path
))
2368 full_exec_path
= xstrdup (exec_file
);
2370 exec_file_attach (full_exec_path
, from_tty
);
2371 symbol_file_add_main (full_exec_path
, from_tty
);
2376 reopen_exec_file ();
2380 /* Take any necessary post-attaching actions for this platform. */
2381 target_post_attach (ptid_get_pid (inferior_ptid
));
2383 post_create_inferior (¤t_target
, from_tty
);
2385 /* Install inferior's terminal modes. */
2386 target_terminal_inferior ();
2390 /* The user requested an `attach&', so be sure to leave threads
2391 that didn't get a signal running. */
2393 /* Immediatelly resume all suspended threads of this inferior,
2394 and this inferior only. This should have no effect on
2395 already running threads. If a thread has been stopped with a
2396 signal, leave it be. */
2398 proceed_after_attach (inferior
->pid
);
2401 if (inferior_thread ()->suspend
.stop_signal
== GDB_SIGNAL_0
)
2403 clear_proceed_status ();
2404 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
2410 /* The user requested a plain `attach', so be sure to leave
2411 the inferior stopped. */
2413 if (target_can_async_p ())
2414 async_enable_stdin ();
2416 /* At least the current thread is already stopped. */
2418 /* In all-stop, by definition, all threads have to be already
2419 stopped at this point. In non-stop, however, although the
2420 selected thread is stopped, others may still be executing.
2421 Be sure to explicitly stop all threads of the process. This
2422 should have no effect on already stopped threads. */
2424 target_stop (pid_to_ptid (inferior
->pid
));
2426 /* Tell the user/frontend where we're stopped. */
2428 if (deprecated_attach_hook
)
2429 deprecated_attach_hook ();
2433 struct attach_command_continuation_args
2441 attach_command_continuation (void *args
, int err
)
2443 struct attach_command_continuation_args
*a
= args
;
2448 attach_command_post_wait (a
->args
, a
->from_tty
, a
->async_exec
);
2452 attach_command_continuation_free_args (void *args
)
2454 struct attach_command_continuation_args
*a
= args
;
2461 attach_command (char *args
, int from_tty
)
2464 struct target_ops
*attach_target
;
2466 dont_repeat (); /* Not for the faint of heart */
2468 if (gdbarch_has_global_solist (target_gdbarch ()))
2469 /* Don't complain if all processes share the same symbol
2472 else if (target_has_execution
)
2474 if (query (_("A program is being debugged already. Kill it? ")))
2477 error (_("Not killed."));
2480 /* Clean up any leftovers from other runs. Some other things from
2481 this function should probably be moved into target_pre_inferior. */
2482 target_pre_inferior (from_tty
);
2485 async_exec
= strip_bg_char (&args
);
2487 attach_target
= find_attach_target ();
2489 prepare_execution_command (attach_target
, async_exec
);
2491 if (non_stop
&& !attach_target
->to_supports_non_stop (attach_target
))
2492 error (_("Cannot attach to this target in non-stop mode"));
2494 attach_target
->to_attach (attach_target
, args
, from_tty
);
2495 /* to_attach should push the target, so after this point we
2496 shouldn't refer to attach_target again. */
2497 attach_target
= NULL
;
2499 /* Set up the "saved terminal modes" of the inferior
2500 based on what modes we are starting it with. */
2501 target_terminal_init ();
2503 /* Set up execution context to know that we should return from
2504 wait_for_inferior as soon as the target reports a stop. */
2505 init_wait_for_inferior ();
2506 clear_proceed_status ();
2510 /* If we find that the current thread isn't stopped, explicitly
2511 do so now, because we're going to install breakpoints and
2515 /* The user requested an `attach&'; stop just one thread. */
2516 target_stop (inferior_ptid
);
2518 /* The user requested an `attach', so stop all threads of this
2520 target_stop (pid_to_ptid (ptid_get_pid (inferior_ptid
)));
2523 /* Some system don't generate traps when attaching to inferior.
2524 E.g. Mach 3 or GNU hurd. */
2525 if (!target_attach_no_wait
)
2527 struct inferior
*inferior
= current_inferior ();
2529 /* Careful here. See comments in inferior.h. Basically some
2530 OSes don't ignore SIGSTOPs on continue requests anymore. We
2531 need a way for handle_inferior_event to reset the stop_signal
2532 variable after an attach, and this is what
2533 STOP_QUIETLY_NO_SIGSTOP is for. */
2534 inferior
->control
.stop_soon
= STOP_QUIETLY_NO_SIGSTOP
;
2536 if (target_can_async_p ())
2538 /* sync_execution mode. Wait for stop. */
2539 struct attach_command_continuation_args
*a
;
2541 a
= xmalloc (sizeof (*a
));
2542 a
->args
= xstrdup (args
);
2543 a
->from_tty
= from_tty
;
2544 a
->async_exec
= async_exec
;
2545 add_inferior_continuation (attach_command_continuation
, a
,
2546 attach_command_continuation_free_args
);
2550 wait_for_inferior ();
2553 attach_command_post_wait (args
, from_tty
, async_exec
);
2556 /* We had just found out that the target was already attached to an
2557 inferior. PTID points at a thread of this new inferior, that is
2558 the most likely to be stopped right now, but not necessarily so.
2559 The new inferior is assumed to be already added to the inferior
2560 list at this point. If LEAVE_RUNNING, then leave the threads of
2561 this inferior running, except those we've explicitly seen reported
2565 notice_new_inferior (ptid_t ptid
, int leave_running
, int from_tty
)
2567 struct cleanup
* old_chain
;
2570 old_chain
= make_cleanup (null_cleanup
, NULL
);
2572 /* If in non-stop, leave threads as running as they were. If
2573 they're stopped for some reason other than us telling it to, the
2574 target reports a signal != GDB_SIGNAL_0. We don't try to
2575 resume threads with such a stop signal. */
2576 async_exec
= non_stop
;
2578 if (!ptid_equal (inferior_ptid
, null_ptid
))
2579 make_cleanup_restore_current_thread ();
2581 switch_to_thread (ptid
);
2583 /* When we "notice" a new inferior we need to do all the things we
2584 would normally do if we had just attached to it. */
2586 if (is_executing (inferior_ptid
))
2588 struct inferior
*inferior
= current_inferior ();
2590 /* We're going to install breakpoints, and poke at memory,
2591 ensure that the inferior is stopped for a moment while we do
2593 target_stop (inferior_ptid
);
2595 inferior
->control
.stop_soon
= STOP_QUIETLY_REMOTE
;
2597 /* Wait for stop before proceeding. */
2598 if (target_can_async_p ())
2600 struct attach_command_continuation_args
*a
;
2602 a
= xmalloc (sizeof (*a
));
2603 a
->args
= xstrdup ("");
2604 a
->from_tty
= from_tty
;
2605 a
->async_exec
= async_exec
;
2606 add_inferior_continuation (attach_command_continuation
, a
,
2607 attach_command_continuation_free_args
);
2609 do_cleanups (old_chain
);
2613 wait_for_inferior ();
2616 async_exec
= leave_running
;
2617 attach_command_post_wait ("" /* args */, from_tty
, async_exec
);
2619 do_cleanups (old_chain
);
2624 * takes a program previously attached to and detaches it.
2625 * The program resumes execution and will no longer stop
2626 * on signals, etc. We better not have left any breakpoints
2627 * in the program or it'll die when it hits one. For this
2628 * to work, it may be necessary for the process to have been
2629 * previously attached. It *might* work if the program was
2630 * started via the normal ptrace (PTRACE_TRACEME).
2634 detach_command (char *args
, int from_tty
)
2636 dont_repeat (); /* Not for the faint of heart. */
2638 if (ptid_equal (inferior_ptid
, null_ptid
))
2639 error (_("The program is not being run."));
2641 query_if_trace_running (from_tty
);
2643 disconnect_tracing ();
2645 target_detach (args
, from_tty
);
2647 /* If the solist is global across inferiors, don't clear it when we
2648 detach from a single inferior. */
2649 if (!gdbarch_has_global_solist (target_gdbarch ()))
2650 no_shared_libraries (NULL
, from_tty
);
2652 /* If we still have inferiors to debug, then don't mess with their
2654 if (!have_inferiors ())
2655 init_thread_list ();
2657 if (deprecated_detach_hook
)
2658 deprecated_detach_hook ();
2661 /* Disconnect from the current target without resuming it (leaving it
2662 waiting for a debugger).
2664 We'd better not have left any breakpoints in the program or the
2665 next debugger will get confused. Currently only supported for some
2666 remote targets, since the normal attach mechanisms don't work on
2667 stopped processes on some native platforms (e.g. GNU/Linux). */
2670 disconnect_command (char *args
, int from_tty
)
2672 dont_repeat (); /* Not for the faint of heart. */
2673 query_if_trace_running (from_tty
);
2674 disconnect_tracing ();
2675 target_disconnect (args
, from_tty
);
2676 no_shared_libraries (NULL
, from_tty
);
2677 init_thread_list ();
2678 if (deprecated_detach_hook
)
2679 deprecated_detach_hook ();
2683 interrupt_target_1 (int all_threads
)
2688 ptid
= minus_one_ptid
;
2690 ptid
= inferior_ptid
;
2693 /* Tag the thread as having been explicitly requested to stop, so
2694 other parts of gdb know not to resume this thread automatically,
2695 if it was stopped due to an internal event. Limit this to
2696 non-stop mode, as when debugging a multi-threaded application in
2697 all-stop mode, we will only get one stop event --- it's undefined
2698 which thread will report the event. */
2700 set_stop_requested (ptid
, 1);
2704 Stop the execution of the target while running in async mode, in
2705 the backgound. In all-stop, stop the whole process. In non-stop
2706 mode, stop the current thread only by default, or stop all threads
2707 if the `-a' switch is used. */
2710 interrupt_command (char *args
, int from_tty
)
2712 if (target_can_async_p ())
2714 int all_threads
= 0;
2716 dont_repeat (); /* Not for the faint of heart. */
2719 && strncmp (args
, "-a", sizeof ("-a") - 1) == 0)
2722 if (!non_stop
&& all_threads
)
2723 error (_("-a is meaningless in all-stop mode."));
2725 interrupt_target_1 (all_threads
);
2730 print_float_info (struct ui_file
*file
,
2731 struct frame_info
*frame
, const char *args
)
2733 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
2735 if (gdbarch_print_float_info_p (gdbarch
))
2736 gdbarch_print_float_info (gdbarch
, file
, frame
, args
);
2740 int printed_something
= 0;
2743 regnum
< gdbarch_num_regs (gdbarch
)
2744 + gdbarch_num_pseudo_regs (gdbarch
);
2747 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, float_reggroup
))
2749 printed_something
= 1;
2750 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
2753 if (!printed_something
)
2754 fprintf_filtered (file
, "No floating-point info "
2755 "available for this processor.\n");
2760 float_info (char *args
, int from_tty
)
2762 if (!target_has_registers
)
2763 error (_("The program has no registers now."));
2765 print_float_info (gdb_stdout
, get_selected_frame (NULL
), args
);
2769 unset_command (char *args
, int from_tty
)
2771 printf_filtered (_("\"unset\" must be followed by the "
2772 "name of an unset subcommand.\n"));
2773 help_list (unsetlist
, "unset ", -1, gdb_stdout
);
2776 /* Implement `info proc' family of commands. */
2779 info_proc_cmd_1 (char *args
, enum info_proc_what what
, int from_tty
)
2781 struct gdbarch
*gdbarch
= get_current_arch ();
2783 if (!target_info_proc (args
, what
))
2785 if (gdbarch_info_proc_p (gdbarch
))
2786 gdbarch_info_proc (gdbarch
, args
, what
);
2788 error (_("Not supported on this target."));
2792 /* Implement `info proc' when given without any futher parameters. */
2795 info_proc_cmd (char *args
, int from_tty
)
2797 info_proc_cmd_1 (args
, IP_MINIMAL
, from_tty
);
2800 /* Implement `info proc mappings'. */
2803 info_proc_cmd_mappings (char *args
, int from_tty
)
2805 info_proc_cmd_1 (args
, IP_MAPPINGS
, from_tty
);
2808 /* Implement `info proc stat'. */
2811 info_proc_cmd_stat (char *args
, int from_tty
)
2813 info_proc_cmd_1 (args
, IP_STAT
, from_tty
);
2816 /* Implement `info proc status'. */
2819 info_proc_cmd_status (char *args
, int from_tty
)
2821 info_proc_cmd_1 (args
, IP_STATUS
, from_tty
);
2824 /* Implement `info proc cwd'. */
2827 info_proc_cmd_cwd (char *args
, int from_tty
)
2829 info_proc_cmd_1 (args
, IP_CWD
, from_tty
);
2832 /* Implement `info proc cmdline'. */
2835 info_proc_cmd_cmdline (char *args
, int from_tty
)
2837 info_proc_cmd_1 (args
, IP_CMDLINE
, from_tty
);
2840 /* Implement `info proc exe'. */
2843 info_proc_cmd_exe (char *args
, int from_tty
)
2845 info_proc_cmd_1 (args
, IP_EXE
, from_tty
);
2848 /* Implement `info proc all'. */
2851 info_proc_cmd_all (char *args
, int from_tty
)
2853 info_proc_cmd_1 (args
, IP_ALL
, from_tty
);
2857 _initialize_infcmd (void)
2859 static struct cmd_list_element
*info_proc_cmdlist
;
2860 struct cmd_list_element
*c
= NULL
;
2861 const char *cmd_name
;
2863 /* Add the filename of the terminal connected to inferior I/O. */
2864 add_setshow_filename_cmd ("inferior-tty", class_run
,
2865 &inferior_io_terminal_scratch
, _("\
2866 Set terminal for future runs of program being debugged."), _("\
2867 Show terminal for future runs of program being debugged."), _("\
2868 Usage: set inferior-tty /dev/pts/1"),
2869 set_inferior_tty_command
,
2870 show_inferior_tty_command
,
2871 &setlist
, &showlist
);
2872 add_com_alias ("tty", "set inferior-tty", class_alias
, 0);
2875 add_setshow_string_noescape_cmd (cmd_name
, class_run
,
2876 &inferior_args_scratch
, _("\
2877 Set argument list to give program being debugged when it is started."), _("\
2878 Show argument list to give program being debugged when it is started."), _("\
2879 Follow this command with any number of args, to be passed to the program."),
2882 &setlist
, &showlist
);
2883 c
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
2884 gdb_assert (c
!= NULL
);
2885 set_cmd_completer (c
, filename_completer
);
2887 c
= add_cmd ("environment", no_class
, environment_info
, _("\
2888 The environment to give the program, or one variable's value.\n\
2889 With an argument VAR, prints the value of environment variable VAR to\n\
2890 give the program being debugged. With no arguments, prints the entire\n\
2891 environment to be given to the program."), &showlist
);
2892 set_cmd_completer (c
, noop_completer
);
2894 add_prefix_cmd ("unset", no_class
, unset_command
,
2895 _("Complement to certain \"set\" commands."),
2896 &unsetlist
, "unset ", 0, &cmdlist
);
2898 c
= add_cmd ("environment", class_run
, unset_environment_command
, _("\
2899 Cancel environment variable VAR for the program.\n\
2900 This does not affect the program until the next \"run\" command."),
2902 set_cmd_completer (c
, noop_completer
);
2904 c
= add_cmd ("environment", class_run
, set_environment_command
, _("\
2905 Set environment variable value to give the program.\n\
2906 Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\
2907 VALUES of environment variables are uninterpreted strings.\n\
2908 This does not affect the program until the next \"run\" command."),
2910 set_cmd_completer (c
, noop_completer
);
2912 c
= add_com ("path", class_files
, path_command
, _("\
2913 Add directory DIR(s) to beginning of search path for object files.\n\
2914 $cwd in the path means the current working directory.\n\
2915 This path is equivalent to the $PATH shell variable. It is a list of\n\
2916 directories, separated by colons. These directories are searched to find\n\
2917 fully linked executable files and separately compiled object files as \
2919 set_cmd_completer (c
, filename_completer
);
2921 c
= add_cmd ("paths", no_class
, path_info
, _("\
2922 Current search path for finding object files.\n\
2923 $cwd in the path means the current working directory.\n\
2924 This path is equivalent to the $PATH shell variable. It is a list of\n\
2925 directories, separated by colons. These directories are searched to find\n\
2926 fully linked executable files and separately compiled object files as \
2929 set_cmd_completer (c
, noop_completer
);
2931 add_prefix_cmd ("kill", class_run
, kill_command
,
2932 _("Kill execution of program being debugged."),
2933 &killlist
, "kill ", 0, &cmdlist
);
2935 add_com ("attach", class_run
, attach_command
, _("\
2936 Attach to a process or file outside of GDB.\n\
2937 This command attaches to another target, of the same type as your last\n\
2938 \"target\" command (\"info files\" will show your target stack).\n\
2939 The command may take as argument a process id or a device file.\n\
2940 For a process id, you must have permission to send the process a signal,\n\
2941 and it must have the same effective uid as the debugger.\n\
2942 When using \"attach\" with a process id, the debugger finds the\n\
2943 program running in the process, looking first in the current working\n\
2944 directory, or (if not found there) using the source file search path\n\
2945 (see the \"directory\" command). You can also use the \"file\" command\n\
2946 to specify the program, and to load its symbol table."));
2948 add_prefix_cmd ("detach", class_run
, detach_command
, _("\
2949 Detach a process or file previously attached.\n\
2950 If a process, it is no longer traced, and it continues its execution. If\n\
2951 you were debugging a file, the file is closed and gdb no longer accesses it."),
2952 &detachlist
, "detach ", 0, &cmdlist
);
2954 add_com ("disconnect", class_run
, disconnect_command
, _("\
2955 Disconnect from a target.\n\
2956 The target will wait for another debugger to connect. Not available for\n\
2959 c
= add_com ("signal", class_run
, signal_command
, _("\
2960 Continue program with the specified signal.\n\
2961 Usage: signal SIGNAL\n\
2962 The SIGNAL argument is processed the same as the handle command.\n\
2964 An argument of \"0\" means continue the program without sending it a signal.\n\
2965 This is useful in cases where the program stopped because of a signal,\n\
2966 and you want to resume the program while discarding the signal."));
2967 set_cmd_completer (c
, signal_completer
);
2969 add_com ("stepi", class_run
, stepi_command
, _("\
2970 Step one instruction exactly.\n\
2972 Argument N means step N times (or till program stops for another \
2974 add_com_alias ("si", "stepi", class_alias
, 0);
2976 add_com ("nexti", class_run
, nexti_command
, _("\
2977 Step one instruction, but proceed through subroutine calls.\n\
2979 Argument N means step N times (or till program stops for another \
2981 add_com_alias ("ni", "nexti", class_alias
, 0);
2983 add_com ("finish", class_run
, finish_command
, _("\
2984 Execute until selected stack frame returns.\n\
2986 Upon return, the value returned is printed and put in the value history."));
2987 add_com_alias ("fin", "finish", class_run
, 1);
2989 add_com ("next", class_run
, next_command
, _("\
2990 Step program, proceeding through subroutine calls.\n\
2992 Unlike \"step\", if the current source line calls a subroutine,\n\
2993 this command does not enter the subroutine, but instead steps over\n\
2994 the call, in effect treating it as a single source line."));
2995 add_com_alias ("n", "next", class_run
, 1);
2997 add_com_alias ("S", "next", class_run
, 1);
2999 add_com ("step", class_run
, step_command
, _("\
3000 Step program until it reaches a different source line.\n\
3002 Argument N means step N times (or till program stops for another \
3004 add_com_alias ("s", "step", class_run
, 1);
3006 c
= add_com ("until", class_run
, until_command
, _("\
3007 Execute until the program reaches a source line greater than the current\n\
3008 or a specified location (same args as break command) within the current \
3010 set_cmd_completer (c
, location_completer
);
3011 add_com_alias ("u", "until", class_run
, 1);
3013 c
= add_com ("advance", class_run
, advance_command
, _("\
3014 Continue the program up to the given location (same form as args for break \
3016 Execution will also stop upon exit from the current stack frame."));
3017 set_cmd_completer (c
, location_completer
);
3019 c
= add_com ("jump", class_run
, jump_command
, _("\
3020 Continue program being debugged at specified line or address.\n\
3021 Usage: jump <location>\n\
3022 Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\
3023 for an address to start at."));
3024 set_cmd_completer (c
, location_completer
);
3025 add_com_alias ("j", "jump", class_run
, 1);
3029 c
= add_com ("go", class_run
, go_command
, _("\
3030 Usage: go <location>\n\
3031 Continue program being debugged, stopping at specified line or \n\
3033 Give as argument either LINENUM or *ADDR, where ADDR is an \n\
3034 expression for an address to start at.\n\
3035 This command is a combination of tbreak and jump."));
3036 set_cmd_completer (c
, location_completer
);
3040 add_com_alias ("g", "go", class_run
, 1);
3042 add_com ("continue", class_run
, continue_command
, _("\
3043 Continue program being debugged, after signal or breakpoint.\n\
3044 Usage: continue [N]\n\
3045 If proceeding from breakpoint, a number N may be used as an argument,\n\
3046 which means to set the ignore count of that breakpoint to N - 1 (so that\n\
3047 the breakpoint won't break until the Nth time it is reached).\n\
3049 If non-stop mode is enabled, continue only the current thread,\n\
3050 otherwise all the threads in the program are continued. To \n\
3051 continue all stopped threads in non-stop mode, use the -a option.\n\
3052 Specifying -a and an ignore count simultaneously is an error."));
3053 add_com_alias ("c", "cont", class_run
, 1);
3054 add_com_alias ("fg", "cont", class_run
, 1);
3056 c
= add_com ("run", class_run
, run_command
, _("\
3057 Start debugged program. You may specify arguments to give it.\n\
3058 Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\
3059 Input and output redirection with \">\", \"<\", or \">>\" are also \
3061 With no arguments, uses arguments last specified (with \"run\" \
3062 or \"set args\").\n\
3063 To cancel previous arguments and run with no arguments,\n\
3064 use \"set args\" without arguments."));
3065 set_cmd_completer (c
, filename_completer
);
3066 add_com_alias ("r", "run", class_run
, 1);
3068 add_com ("R", class_run
, run_no_args_command
,
3069 _("Start debugged program with no arguments."));
3071 c
= add_com ("start", class_run
, start_command
, _("\
3072 Run the debugged program until the beginning of the main procedure.\n\
3073 You may specify arguments to give to your program, just as with the\n\
3074 \"run\" command."));
3075 set_cmd_completer (c
, filename_completer
);
3077 add_com ("interrupt", class_run
, interrupt_command
,
3078 _("Interrupt the execution of the debugged program.\n\
3079 If non-stop mode is enabled, interrupt only the current thread,\n\
3080 otherwise all the threads in the program are stopped. To \n\
3081 interrupt all running threads in non-stop mode, use the -a option."));
3083 add_info ("registers", nofp_registers_info
, _("\
3084 List of integer registers and their contents, for selected stack frame.\n\
3085 Register name as argument means describe only that register."));
3086 add_info_alias ("r", "registers", 1);
3089 add_com ("lr", class_info
, nofp_registers_info
, _("\
3090 List of integer registers and their contents, for selected stack frame.\n\
3091 Register name as argument means describe only that register."));
3092 add_info ("all-registers", all_registers_info
, _("\
3093 List of all registers and their contents, for selected stack frame.\n\
3094 Register name as argument means describe only that register."));
3096 add_info ("program", program_info
,
3097 _("Execution status of the program."));
3099 add_info ("float", float_info
,
3100 _("Print the status of the floating point unit\n"));
3102 add_info ("vector", vector_info
,
3103 _("Print the status of the vector unit\n"));
3105 add_prefix_cmd ("proc", class_info
, info_proc_cmd
,
3107 Show /proc process information about any running process.\n\
3108 Specify any process id, or use the program being debugged by default."),
3109 &info_proc_cmdlist
, "info proc ",
3110 1/*allow-unknown*/, &infolist
);
3112 add_cmd ("mappings", class_info
, info_proc_cmd_mappings
, _("\
3113 List of mapped memory regions."),
3114 &info_proc_cmdlist
);
3116 add_cmd ("stat", class_info
, info_proc_cmd_stat
, _("\
3117 List process info from /proc/PID/stat."),
3118 &info_proc_cmdlist
);
3120 add_cmd ("status", class_info
, info_proc_cmd_status
, _("\
3121 List process info from /proc/PID/status."),
3122 &info_proc_cmdlist
);
3124 add_cmd ("cwd", class_info
, info_proc_cmd_cwd
, _("\
3125 List current working directory of the process."),
3126 &info_proc_cmdlist
);
3128 add_cmd ("cmdline", class_info
, info_proc_cmd_cmdline
, _("\
3129 List command line arguments of the process."),
3130 &info_proc_cmdlist
);
3132 add_cmd ("exe", class_info
, info_proc_cmd_exe
, _("\
3133 List absolute filename for executable of the process."),
3134 &info_proc_cmdlist
);
3136 add_cmd ("all", class_info
, info_proc_cmd_all
, _("\
3137 List all available /proc info."),
3138 &info_proc_cmdlist
);