1 /* Memory-access and commands for "inferior" process, for GDB.
3 Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
4 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
5 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
23 #include "arch-utils.h"
25 #include "gdb_string.h"
39 #include "completer.h"
41 #include "event-top.h"
42 #include "parser-defs.h"
44 #include "reggroups.h"
48 #include "gdb_assert.h"
50 #include "target-descriptions.h"
51 #include "user-regs.h"
52 #include "exceptions.h"
53 #include "cli/cli-decode.h"
54 #include "gdbthread.h"
56 #include "inline-frame.h"
57 #include "tracepoint.h"
59 #include "continuations.h"
61 /* Functions exported for general use, in inferior.h: */
63 void all_registers_info (char *, int);
65 void registers_info (char *, int);
67 void nexti_command (char *, int);
69 void stepi_command (char *, int);
71 void continue_command (char *, int);
73 void interrupt_target_command (char *args
, int from_tty
);
75 /* Local functions: */
77 static void nofp_registers_info (char *, int);
79 static void print_return_value (struct type
*func_type
,
80 struct type
*value_type
);
82 static void until_next_command (int);
84 static void until_command (char *, int);
86 static void path_info (char *, int);
88 static void path_command (char *, int);
90 static void unset_command (char *, int);
92 static void float_info (char *, int);
94 static void disconnect_command (char *, int);
96 static void unset_environment_command (char *, int);
98 static void set_environment_command (char *, int);
100 static void environment_info (char *, int);
102 static void program_info (char *, int);
104 static void finish_command (char *, int);
106 static void signal_command (char *, int);
108 static void jump_command (char *, int);
110 static void step_1 (int, int, char *);
111 static void step_once (int skip_subroutines
, int single_inst
,
112 int count
, int thread
);
114 static void next_command (char *, int);
116 static void step_command (char *, int);
118 static void run_command (char *, int);
120 static void run_no_args_command (char *args
, int from_tty
);
122 static void go_command (char *line_no
, int from_tty
);
124 static int strip_bg_char (char **);
126 void _initialize_infcmd (void);
128 #define ERROR_NO_INFERIOR \
129 if (!target_has_execution) error (_("The program is not being run."));
131 /* Scratch area where string containing arguments to give to the
132 program will be stored by 'set args'. As soon as anything is
133 stored, notice_args_set will move it into per-inferior storage.
134 Arguments are separated by spaces. Empty string (pointer to '\0')
137 static char *inferior_args_scratch
;
139 /* Scratch area where 'set inferior-tty' will store user-provided value.
140 We'll immediate copy it into per-inferior storage. */
142 static char *inferior_io_terminal_scratch
;
144 /* Pid of our debugged inferior, or 0 if no inferior now.
145 Since various parts of infrun.c test this to see whether there is a program
146 being debugged it should be nonzero (currently 3 is used) for remote
149 ptid_t inferior_ptid
;
151 /* Address at which inferior stopped. */
155 /* Flag indicating that a command has proceeded the inferior past the
156 current breakpoint. */
158 int breakpoint_proceeded
;
160 /* Nonzero if stopped due to completion of a stack dummy routine. */
162 enum stop_stack_kind stop_stack_dummy
;
164 /* Nonzero if stopped due to a random (unexpected) signal in inferior
167 int stopped_by_random_signal
;
170 /* Accessor routines. */
172 /* Set the io terminal for the current inferior. Ownership of
173 TERMINAL_NAME is not transferred. */
176 set_inferior_io_terminal (const char *terminal_name
)
178 xfree (current_inferior ()->terminal
);
179 current_inferior ()->terminal
= terminal_name
? xstrdup (terminal_name
) : 0;
183 get_inferior_io_terminal (void)
185 return current_inferior ()->terminal
;
189 set_inferior_tty_command (char *args
, int from_tty
,
190 struct cmd_list_element
*c
)
192 /* CLI has assigned the user-provided value to inferior_io_terminal_scratch.
193 Now route it to current inferior. */
194 set_inferior_io_terminal (inferior_io_terminal_scratch
);
198 show_inferior_tty_command (struct ui_file
*file
, int from_tty
,
199 struct cmd_list_element
*c
, const char *value
)
201 /* Note that we ignore the passed-in value in favor of computing it
203 const char *inferior_io_terminal
= get_inferior_io_terminal ();
205 if (inferior_io_terminal
== NULL
)
206 inferior_io_terminal
= "";
207 fprintf_filtered (gdb_stdout
,
208 _("Terminal for future runs of program being debugged "
209 "is \"%s\".\n"), inferior_io_terminal
);
213 get_inferior_args (void)
215 if (current_inferior ()->argc
!= 0)
219 n
= construct_inferior_arguments (current_inferior ()->argc
,
220 current_inferior ()->argv
);
221 set_inferior_args (n
);
225 if (current_inferior ()->args
== NULL
)
226 current_inferior ()->args
= xstrdup ("");
228 return current_inferior ()->args
;
231 /* Set the arguments for the current inferior. Ownership of
232 NEWARGS is not transferred. */
235 set_inferior_args (char *newargs
)
237 xfree (current_inferior ()->args
);
238 current_inferior ()->args
= newargs
? xstrdup (newargs
) : NULL
;
239 current_inferior ()->argc
= 0;
240 current_inferior ()->argv
= 0;
244 set_inferior_args_vector (int argc
, char **argv
)
246 current_inferior ()->argc
= argc
;
247 current_inferior ()->argv
= argv
;
250 /* Notice when `set args' is run. */
252 set_args_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
254 /* CLI has assigned the user-provided value to inferior_args_scratch.
255 Now route it to current inferior. */
256 set_inferior_args (inferior_args_scratch
);
259 /* Notice when `show args' is run. */
261 show_args_command (struct ui_file
*file
, int from_tty
,
262 struct cmd_list_element
*c
, const char *value
)
264 /* Note that we ignore the passed-in value in favor of computing it
266 deprecated_show_value_hack (file
, from_tty
, c
, get_inferior_args ());
270 /* Compute command-line string given argument vector. This does the
271 same shell processing as fork_inferior. */
273 construct_inferior_arguments (int argc
, char **argv
)
277 if (STARTUP_WITH_SHELL
)
279 /* This holds all the characters considered special to the
280 typical Unix shells. We include `^' because the SunOS
281 /bin/sh treats it as a synonym for `|'. */
282 char *special
= "\"!#$&*()\\|[]{}<>?'\"`~^; \t\n";
287 /* We over-compute the size. It shouldn't matter. */
288 for (i
= 0; i
< argc
; ++i
)
289 length
+= 3 * strlen (argv
[i
]) + 1 + 2 * (argv
[i
][0] == '\0');
291 result
= (char *) xmalloc (length
);
294 for (i
= 0; i
< argc
; ++i
)
299 /* Need to handle empty arguments specially. */
300 if (argv
[i
][0] == '\0')
307 for (cp
= argv
[i
]; *cp
; ++cp
)
311 /* A newline cannot be quoted with a backslash (it
312 just disappears), only by putting it inside
320 if (strchr (special
, *cp
) != NULL
)
331 /* In this case we can't handle arguments that contain spaces,
332 tabs, or newlines -- see breakup_args(). */
336 for (i
= 0; i
< argc
; ++i
)
338 char *cp
= strchr (argv
[i
], ' ');
340 cp
= strchr (argv
[i
], '\t');
342 cp
= strchr (argv
[i
], '\n');
344 error (_("can't handle command-line "
345 "argument containing whitespace"));
346 length
+= strlen (argv
[i
]) + 1;
349 result
= (char *) xmalloc (length
);
351 for (i
= 0; i
< argc
; ++i
)
354 strcat (result
, " ");
355 strcat (result
, argv
[i
]);
363 /* This function detects whether or not a '&' character (indicating
364 background execution) has been added as *the last* of the arguments ARGS
365 of a command. If it has, it removes it and returns 1. Otherwise it
366 does nothing and returns 0. */
368 strip_bg_char (char **args
)
372 p
= strchr (*args
, '&');
376 if (p
== (*args
+ strlen (*args
) - 1))
378 if (strlen (*args
) > 1)
382 while (*p
== ' ' || *p
== '\t');
393 /* Common actions to take after creating any sort of inferior, by any
394 means (running, attaching, connecting, et cetera). The target
395 should be stopped. */
398 post_create_inferior (struct target_ops
*target
, int from_tty
)
400 volatile struct gdb_exception ex
;
402 /* Be sure we own the terminal in case write operations are performed. */
403 target_terminal_ours ();
405 /* If the target hasn't taken care of this already, do it now.
406 Targets which need to access registers during to_open,
407 to_create_inferior, or to_attach should do it earlier; but many
409 target_find_description ();
411 /* Now that we know the register layout, retrieve current PC. But
412 if the PC is unavailable (e.g., we're opening a core file with
413 missing registers info), ignore it. */
415 TRY_CATCH (ex
, RETURN_MASK_ERROR
)
417 stop_pc
= regcache_read_pc (get_current_regcache ());
419 if (ex
.reason
< 0 && ex
.error
!= NOT_AVAILABLE_ERROR
)
420 throw_exception (ex
);
424 /* Create the hooks to handle shared library load and unload
426 #ifdef SOLIB_CREATE_INFERIOR_HOOK
427 SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid
));
429 solib_create_inferior_hook (from_tty
);
433 /* If the solist is global across processes, there's no need to
435 if (exec_bfd
&& !gdbarch_has_global_solist (target_gdbarch
))
437 /* Sometimes the platform-specific hook loads initial shared
438 libraries, and sometimes it doesn't. If it doesn't FROM_TTY will be
439 incorrectly 0 but such solib targets should be fixed anyway. If we
440 made all the inferior hook methods consistent, this call could be
441 removed. Call it only after the solib target has been initialized by
442 solib_create_inferior_hook. */
445 SOLIB_ADD (NULL
, 0, target
, auto_solib_add
);
447 solib_add (NULL
, 0, target
, auto_solib_add
);
451 /* If the user sets watchpoints before execution having started,
452 then she gets software watchpoints, because GDB can't know which
453 target will end up being pushed, or if it supports hardware
454 watchpoints or not. breakpoint_re_set takes care of promoting
455 watchpoints to hardware watchpoints if possible, however, if this
456 new inferior doesn't load shared libraries or we don't pull in
457 symbols from any other source on this target/arch,
458 breakpoint_re_set is never called. Call it now so that software
459 watchpoints get a chance to be promoted to hardware watchpoints
460 if the now pushed target supports hardware watchpoints. */
461 breakpoint_re_set ();
463 observer_notify_inferior_created (target
, from_tty
);
466 /* Kill the inferior if already running. This function is designed
467 to be called when we are about to start the execution of the program
468 from the beginning. Ask the user to confirm that he wants to restart
469 the program being debugged when FROM_TTY is non-null. */
472 kill_if_already_running (int from_tty
)
474 if (! ptid_equal (inferior_ptid
, null_ptid
) && target_has_execution
)
476 /* Bail out before killing the program if we will not be able to
478 target_require_runnable ();
481 && !query (_("The program being debugged has been started already.\n\
482 Start it from the beginning? ")))
483 error (_("Program not restarted."));
488 /* Implement the "run" command. If TBREAK_AT_MAIN is set, then insert
489 a temporary breakpoint at the begining of the main program before
490 running the program. */
493 run_command_1 (char *args
, int from_tty
, int tbreak_at_main
)
496 struct cleanup
*old_chain
;
501 kill_if_already_running (from_tty
);
503 init_wait_for_inferior ();
504 clear_breakpoint_hit_counts ();
506 /* Clean up any leftovers from other runs. Some other things from
507 this function should probably be moved into target_pre_inferior. */
508 target_pre_inferior (from_tty
);
510 /* The comment here used to read, "The exec file is re-read every
511 time we do a generic_mourn_inferior, so we just have to worry
512 about the symbol file." The `generic_mourn_inferior' function
513 gets called whenever the program exits. However, suppose the
514 program exits, and *then* the executable file changes? We need
515 to check again here. Since reopen_exec_file doesn't do anything
516 if the timestamp hasn't changed, I don't see the harm. */
520 /* Insert the temporary breakpoint if a location was specified. */
522 tbreak_command (main_name (), 0);
524 exec_file
= (char *) get_exec_file (0);
526 if (non_stop
&& !target_supports_non_stop ())
527 error (_("The target does not support running in non-stop mode."));
529 /* We keep symbols from add-symbol-file, on the grounds that the
530 user might want to add some symbols before running the program
531 (right?). But sometimes (dynamic loading where the user manually
532 introduces the new symbols with add-symbol-file), the code which
533 the symbols describe does not persist between runs. Currently
534 the user has to manually nuke all symbols between runs if they
535 want them to go away (PR 2207). This is probably reasonable. */
539 if (target_can_async_p ())
540 async_disable_stdin ();
544 int async_exec
= strip_bg_char (&args
);
546 /* If we get a request for running in the bg but the target
547 doesn't support it, error out. */
548 if (async_exec
&& !target_can_async_p ())
549 error (_("Asynchronous execution not supported on this target."));
551 /* If we don't get a request of running in the bg, then we need
552 to simulate synchronous (fg) execution. */
553 if (!async_exec
&& target_can_async_p ())
555 /* Simulate synchronous execution. */
556 async_disable_stdin ();
559 /* If there were other args, beside '&', process them. */
561 set_inferior_args (args
);
566 ui_out_field_string (uiout
, NULL
, "Starting program");
567 ui_out_text (uiout
, ": ");
569 ui_out_field_string (uiout
, "execfile", exec_file
);
570 ui_out_spaces (uiout
, 1);
571 /* We call get_inferior_args() because we might need to compute
573 ui_out_field_string (uiout
, "infargs", get_inferior_args ());
574 ui_out_text (uiout
, "\n");
575 ui_out_flush (uiout
);
578 /* We call get_inferior_args() because we might need to compute
580 target_create_inferior (exec_file
, get_inferior_args (),
581 environ_vector (current_inferior ()->environment
),
584 /* We're starting off a new process. When we get out of here, in
585 non-stop mode, finish the state of all threads of that process,
586 but leave other threads alone, as they may be stopped in internal
587 events --- the frontend shouldn't see them as stopped. In
588 all-stop, always finish the state of all threads, as we may be
589 resuming more than just the new process. */
591 ptid
= pid_to_ptid (ptid_get_pid (inferior_ptid
));
593 ptid
= minus_one_ptid
;
594 old_chain
= make_cleanup (finish_thread_state_cleanup
, &ptid
);
596 /* Pass zero for FROM_TTY, because at this point the "run" command
597 has done its thing; now we are setting up the running program. */
598 post_create_inferior (¤t_target
, 0);
600 /* Start the target running. Do not use -1 continuation as it would skip
601 breakpoint right at the entry point. */
602 proceed (regcache_read_pc (get_current_regcache ()), TARGET_SIGNAL_0
, 0);
604 /* Since there was no error, there's no need to finish the thread
606 discard_cleanups (old_chain
);
610 run_command (char *args
, int from_tty
)
612 run_command_1 (args
, from_tty
, 0);
616 run_no_args_command (char *args
, int from_tty
)
618 set_inferior_args ("");
622 /* Start the execution of the program up until the beginning of the main
626 start_command (char *args
, int from_tty
)
628 /* Some languages such as Ada need to search inside the program
629 minimal symbols for the location where to put the temporary
630 breakpoint before starting. */
631 if (!have_minimal_symbols ())
632 error (_("No symbol table loaded. Use the \"file\" command."));
634 /* Run the program until reaching the main procedure... */
635 run_command_1 (args
, from_tty
, 1);
639 proceed_thread_callback (struct thread_info
*thread
, void *arg
)
641 /* We go through all threads individually instead of compressing
642 into a single target `resume_all' request, because some threads
643 may be stopped in internal breakpoints/events, or stopped waiting
644 for its turn in the displaced stepping queue (that is, they are
645 running && !executing). The target side has no idea about why
646 the thread is stopped, so a `resume_all' command would resume too
647 much. If/when GDB gains a way to tell the target `hold this
648 thread stopped until I say otherwise', then we can optimize
650 if (!is_stopped (thread
->ptid
))
653 switch_to_thread (thread
->ptid
);
654 clear_proceed_status ();
655 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
660 ensure_valid_thread (void)
662 if (ptid_equal (inferior_ptid
, null_ptid
)
663 || is_exited (inferior_ptid
))
664 error (_("Cannot execute this command without a live selected thread."));
667 /* If the user is looking at trace frames, any resumption of execution
668 is likely to mix up recorded and live target data. So simply
669 disallow those commands. */
672 ensure_not_tfind_mode (void)
674 if (get_traceframe_number () >= 0)
675 error (_("Cannot execute this command while looking at trace frames."));
679 continue_1 (int all_threads
)
682 ensure_not_tfind_mode ();
684 if (non_stop
&& all_threads
)
686 /* Don't error out if the current thread is running, because
687 there may be other stopped threads. */
688 struct cleanup
*old_chain
;
690 /* Backup current thread and selected frame. */
691 old_chain
= make_cleanup_restore_current_thread ();
693 iterate_over_threads (proceed_thread_callback
, NULL
);
695 /* Restore selected ptid. */
696 do_cleanups (old_chain
);
700 ensure_valid_thread ();
701 ensure_not_running ();
702 clear_proceed_status ();
703 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
707 /* continue [-a] [proceed-count] [&] */
709 continue_command (char *args
, int from_tty
)
715 /* Find out whether we must run in the background. */
717 async_exec
= strip_bg_char (&args
);
719 /* If we must run in the background, but the target can't do it,
721 if (async_exec
&& !target_can_async_p ())
722 error (_("Asynchronous execution not supported on this target."));
724 /* If we are not asked to run in the bg, then prepare to run in the
725 foreground, synchronously. */
726 if (!async_exec
&& target_can_async_p ())
728 /* Simulate synchronous execution. */
729 async_disable_stdin ();
734 if (strncmp (args
, "-a", sizeof ("-a") - 1) == 0)
737 args
+= sizeof ("-a") - 1;
743 if (!non_stop
&& all_threads
)
744 error (_("`-a' is meaningless in all-stop mode."));
746 if (args
!= NULL
&& all_threads
)
747 error (_("Can't resume all threads and specify "
748 "proceed count simultaneously."));
750 /* If we have an argument left, set proceed count of breakpoint we
757 struct thread_info
*tp
;
760 tp
= find_thread_ptid (inferior_ptid
);
764 struct target_waitstatus ws
;
766 get_last_target_status (&last_ptid
, &ws
);
767 tp
= find_thread_ptid (last_ptid
);
770 bs
= tp
->control
.stop_bpstat
;
772 while ((stat
= bpstat_num (&bs
, &num
)) != 0)
775 set_ignore_count (num
,
776 parse_and_eval_long (args
) - 1,
778 /* set_ignore_count prints a message ending with a period.
779 So print two spaces before "Continuing.". */
781 printf_filtered (" ");
785 if (!stopped
&& from_tty
)
788 ("Not stopped at any breakpoint; argument ignored.\n");
793 printf_filtered (_("Continuing.\n"));
795 continue_1 (all_threads
);
798 /* Record the starting point of a "step" or "next" command. */
801 set_step_frame (void)
803 struct symtab_and_line sal
;
805 find_frame_sal (get_current_frame (), &sal
);
806 set_step_info (get_current_frame (), sal
);
809 /* Step until outside of current statement. */
812 step_command (char *count_string
, int from_tty
)
814 step_1 (0, 0, count_string
);
817 /* Likewise, but skip over subroutine calls as if single instructions. */
820 next_command (char *count_string
, int from_tty
)
822 step_1 (1, 0, count_string
);
825 /* Likewise, but step only one instruction. */
828 stepi_command (char *count_string
, int from_tty
)
830 step_1 (0, 1, count_string
);
834 nexti_command (char *count_string
, int from_tty
)
836 step_1 (1, 1, count_string
);
840 delete_longjmp_breakpoint_cleanup (void *arg
)
842 int thread
= * (int *) arg
;
843 delete_longjmp_breakpoint (thread
);
847 step_1 (int skip_subroutines
, int single_inst
, char *count_string
)
850 struct cleanup
*cleanups
= make_cleanup (null_cleanup
, NULL
);
855 ensure_not_tfind_mode ();
856 ensure_valid_thread ();
857 ensure_not_running ();
860 async_exec
= strip_bg_char (&count_string
);
862 /* If we get a request for running in the bg but the target
863 doesn't support it, error out. */
864 if (async_exec
&& !target_can_async_p ())
865 error (_("Asynchronous execution not supported on this target."));
867 /* If we don't get a request of running in the bg, then we need
868 to simulate synchronous (fg) execution. */
869 if (!async_exec
&& target_can_async_p ())
871 /* Simulate synchronous execution. */
872 async_disable_stdin ();
875 count
= count_string
? parse_and_eval_long (count_string
) : 1;
877 if (!single_inst
|| skip_subroutines
) /* Leave si command alone. */
879 struct thread_info
*tp
= inferior_thread ();
881 if (in_thread_list (inferior_ptid
))
882 thread
= pid_to_thread_id (inferior_ptid
);
884 set_longjmp_breakpoint (tp
, get_frame_id (get_current_frame ()));
886 make_cleanup (delete_longjmp_breakpoint_cleanup
, &thread
);
889 /* In synchronous case, all is well; each step_once call will step once. */
890 if (!target_can_async_p ())
892 for (; count
> 0; count
--)
894 step_once (skip_subroutines
, single_inst
, count
, thread
);
896 if (!target_has_execution
)
900 struct thread_info
*tp
= inferior_thread ();
902 if (!tp
->control
.stop_step
|| !tp
->step_multi
)
904 /* If we stopped for some reason that is not stepping
905 there are no further steps to make. */
912 do_cleanups (cleanups
);
916 /* In the case of an asynchronous target things get complicated;
917 do only one step for now, before returning control to the
918 event loop. Let the continuation figure out how many other
919 steps we need to do, and handle them one at the time, through
921 step_once (skip_subroutines
, single_inst
, count
, thread
);
923 /* We are running, and the continuation is installed. It will
924 disable the longjmp breakpoint as appropriate. */
925 discard_cleanups (cleanups
);
929 struct step_1_continuation_args
932 int skip_subroutines
;
937 /* Called after we are done with one step operation, to check whether
938 we need to step again, before we print the prompt and return control
939 to the user. If count is > 1, we will need to do one more call to
940 proceed(), via step_once(). Basically it is like step_once and
941 step_1_continuation are co-recursive. */
943 step_1_continuation (void *args
, int err
)
945 struct step_1_continuation_args
*a
= args
;
947 if (target_has_execution
)
949 struct thread_info
*tp
;
951 tp
= inferior_thread ();
953 && tp
->step_multi
&& tp
->control
.stop_step
)
955 /* There are more steps to make, and we did stop due to
956 ending a stepping range. Do another step. */
957 step_once (a
->skip_subroutines
, a
->single_inst
,
958 a
->count
- 1, a
->thread
);
964 /* We either hit an error, or stopped for some reason that is
965 not stepping, or there are no further steps to make.
967 if (!a
->single_inst
|| a
->skip_subroutines
)
968 delete_longjmp_breakpoint (a
->thread
);
971 /* Do just one step operation. This is useful to implement the 'step
972 n' kind of commands. In case of asynchronous targets, we will have
973 to set up a continuation to be done after the target stops (after
974 this one step). For synch targets, the caller handles further
978 step_once (int skip_subroutines
, int single_inst
, int count
, int thread
)
980 struct frame_info
*frame
= get_current_frame ();
984 /* Don't assume THREAD is a valid thread id. It is set to -1 if
985 the longjmp breakpoint was not required. Use the
986 INFERIOR_PTID thread instead, which is the same thread when
988 struct thread_info
*tp
= inferior_thread ();
990 clear_proceed_status ();
997 /* Step at an inlined function behaves like "down". */
998 if (!skip_subroutines
&& !single_inst
999 && inline_skipped_frames (inferior_ptid
))
1003 /* Pretend that we've ran. */
1004 resume_ptid
= user_visible_resume_ptid (1);
1005 set_running (resume_ptid
, 1);
1007 step_into_inline_frame (inferior_ptid
);
1009 step_once (skip_subroutines
, single_inst
, count
- 1, thread
);
1012 /* Pretend that we've stopped. */
1015 if (target_can_async_p ())
1016 inferior_event_handler (INF_EXEC_COMPLETE
, NULL
);
1021 pc
= get_frame_pc (frame
);
1022 find_pc_line_pc_range (pc
,
1023 &tp
->control
.step_range_start
,
1024 &tp
->control
.step_range_end
);
1026 /* If we have no line info, switch to stepi mode. */
1027 if (tp
->control
.step_range_end
== 0 && step_stop_if_no_debug
)
1028 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1029 else if (tp
->control
.step_range_end
== 0)
1033 if (find_pc_partial_function (pc
, &name
,
1034 &tp
->control
.step_range_start
,
1035 &tp
->control
.step_range_end
) == 0)
1036 error (_("Cannot find bounds of current function"));
1038 target_terminal_ours ();
1039 printf_filtered (_("Single stepping until exit from function %s,"
1040 "\nwhich has no line number information.\n"),
1046 /* Say we are stepping, but stop after one insn whatever it does. */
1047 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1048 if (!skip_subroutines
)
1050 Don't step over function calls, not even to functions lacking
1052 tp
->control
.step_over_calls
= STEP_OVER_NONE
;
1055 if (skip_subroutines
)
1056 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1058 tp
->step_multi
= (count
> 1);
1059 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
1061 /* For async targets, register a continuation to do any
1062 additional steps. For sync targets, the caller will handle
1063 further stepping. */
1064 if (target_can_async_p ())
1066 struct step_1_continuation_args
*args
;
1068 args
= xmalloc (sizeof (*args
));
1069 args
->skip_subroutines
= skip_subroutines
;
1070 args
->single_inst
= single_inst
;
1071 args
->count
= count
;
1072 args
->thread
= thread
;
1074 add_intermediate_continuation (tp
, step_1_continuation
, args
, xfree
);
1080 /* Continue program at specified address. */
1083 jump_command (char *arg
, int from_tty
)
1085 struct gdbarch
*gdbarch
= get_current_arch ();
1087 struct symtabs_and_lines sals
;
1088 struct symtab_and_line sal
;
1094 ensure_not_tfind_mode ();
1095 ensure_valid_thread ();
1096 ensure_not_running ();
1098 /* Find out whether we must run in the background. */
1100 async_exec
= strip_bg_char (&arg
);
1102 /* If we must run in the background, but the target can't do it,
1104 if (async_exec
&& !target_can_async_p ())
1105 error (_("Asynchronous execution not supported on this target."));
1108 error_no_arg (_("starting address"));
1110 sals
= decode_line_spec_1 (arg
, 1);
1111 if (sals
.nelts
!= 1)
1113 error (_("Unreasonable jump request"));
1119 if (sal
.symtab
== 0 && sal
.pc
== 0)
1120 error (_("No source file has been specified."));
1122 resolve_sal_pc (&sal
); /* May error out. */
1124 /* See if we are trying to jump to another function. */
1125 fn
= get_frame_function (get_current_frame ());
1126 sfn
= find_pc_function (sal
.pc
);
1127 if (fn
!= NULL
&& sfn
!= fn
)
1129 if (!query (_("Line %d is not in `%s'. Jump anyway? "), sal
.line
,
1130 SYMBOL_PRINT_NAME (fn
)))
1132 error (_("Not confirmed."));
1139 fixup_symbol_section (sfn
, 0);
1140 if (section_is_overlay (SYMBOL_OBJ_SECTION (sfn
)) &&
1141 !section_is_mapped (SYMBOL_OBJ_SECTION (sfn
)))
1143 if (!query (_("WARNING!!! Destination is in "
1144 "unmapped overlay! Jump anyway? ")))
1146 error (_("Not confirmed."));
1156 printf_filtered (_("Continuing at "));
1157 fputs_filtered (paddress (gdbarch
, addr
), gdb_stdout
);
1158 printf_filtered (".\n");
1161 /* If we are not asked to run in the bg, then prepare to run in the
1162 foreground, synchronously. */
1163 if (!async_exec
&& target_can_async_p ())
1165 /* Simulate synchronous execution. */
1166 async_disable_stdin ();
1169 clear_proceed_status ();
1170 proceed (addr
, TARGET_SIGNAL_0
, 0);
1174 /* Go to line or address in current procedure. */
1176 go_command (char *line_no
, int from_tty
)
1178 if (line_no
== (char *) NULL
|| !*line_no
)
1179 printf_filtered (_("Usage: go <location>\n"));
1182 tbreak_command (line_no
, from_tty
);
1183 jump_command (line_no
, from_tty
);
1188 /* Continue program giving it specified signal. */
1191 signal_command (char *signum_exp
, int from_tty
)
1193 enum target_signal oursig
;
1196 dont_repeat (); /* Too dangerous. */
1198 ensure_not_tfind_mode ();
1199 ensure_valid_thread ();
1200 ensure_not_running ();
1202 /* Find out whether we must run in the background. */
1203 if (signum_exp
!= NULL
)
1204 async_exec
= strip_bg_char (&signum_exp
);
1206 /* If we must run in the background, but the target can't do it,
1208 if (async_exec
&& !target_can_async_p ())
1209 error (_("Asynchronous execution not supported on this target."));
1211 /* If we are not asked to run in the bg, then prepare to run in the
1212 foreground, synchronously. */
1213 if (!async_exec
&& target_can_async_p ())
1215 /* Simulate synchronous execution. */
1216 async_disable_stdin ();
1220 error_no_arg (_("signal number"));
1222 /* It would be even slicker to make signal names be valid expressions,
1223 (the type could be "enum $signal" or some such), then the user could
1224 assign them to convenience variables. */
1225 oursig
= target_signal_from_name (signum_exp
);
1227 if (oursig
== TARGET_SIGNAL_UNKNOWN
)
1229 /* No, try numeric. */
1230 int num
= parse_and_eval_long (signum_exp
);
1233 oursig
= TARGET_SIGNAL_0
;
1235 oursig
= target_signal_from_command (num
);
1240 if (oursig
== TARGET_SIGNAL_0
)
1241 printf_filtered (_("Continuing with no signal.\n"));
1243 printf_filtered (_("Continuing with signal %s.\n"),
1244 target_signal_to_name (oursig
));
1247 clear_proceed_status ();
1248 proceed ((CORE_ADDR
) -1, oursig
, 0);
1251 /* Continuation args to be passed to the "until" command
1253 struct until_next_continuation_args
1255 /* The thread that was current when the command was executed. */
1259 /* A continuation callback for until_next_command. */
1262 until_next_continuation (void *arg
, int err
)
1264 struct until_next_continuation_args
*a
= arg
;
1266 delete_longjmp_breakpoint (a
->thread
);
1269 /* Proceed until we reach a different source line with pc greater than
1270 our current one or exit the function. We skip calls in both cases.
1272 Note that eventually this command should probably be changed so
1273 that only source lines are printed out when we hit the breakpoint
1274 we set. This may involve changes to wait_for_inferior and the
1275 proceed status code. */
1278 until_next_command (int from_tty
)
1280 struct frame_info
*frame
;
1282 struct symbol
*func
;
1283 struct symtab_and_line sal
;
1284 struct thread_info
*tp
= inferior_thread ();
1285 int thread
= tp
->num
;
1286 struct cleanup
*old_chain
;
1288 clear_proceed_status ();
1291 frame
= get_current_frame ();
1293 /* Step until either exited from this function or greater
1294 than the current line (if in symbolic section) or pc (if
1297 pc
= get_frame_pc (frame
);
1298 func
= find_pc_function (pc
);
1302 struct minimal_symbol
*msymbol
= lookup_minimal_symbol_by_pc (pc
);
1304 if (msymbol
== NULL
)
1305 error (_("Execution is not within a known function."));
1307 tp
->control
.step_range_start
= SYMBOL_VALUE_ADDRESS (msymbol
);
1308 tp
->control
.step_range_end
= pc
;
1312 sal
= find_pc_line (pc
, 0);
1314 tp
->control
.step_range_start
= BLOCK_START (SYMBOL_BLOCK_VALUE (func
));
1315 tp
->control
.step_range_end
= sal
.end
;
1318 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1320 tp
->step_multi
= 0; /* Only one call to proceed */
1322 set_longjmp_breakpoint (tp
, get_frame_id (frame
));
1323 old_chain
= make_cleanup (delete_longjmp_breakpoint_cleanup
, &thread
);
1325 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
1327 if (target_can_async_p () && is_running (inferior_ptid
))
1329 struct until_next_continuation_args
*cont_args
;
1331 discard_cleanups (old_chain
);
1332 cont_args
= XNEW (struct until_next_continuation_args
);
1333 cont_args
->thread
= inferior_thread ()->num
;
1335 add_continuation (tp
, until_next_continuation
, cont_args
, xfree
);
1338 do_cleanups (old_chain
);
1342 until_command (char *arg
, int from_tty
)
1347 ensure_not_tfind_mode ();
1348 ensure_valid_thread ();
1349 ensure_not_running ();
1351 /* Find out whether we must run in the background. */
1353 async_exec
= strip_bg_char (&arg
);
1355 /* If we must run in the background, but the target can't do it,
1357 if (async_exec
&& !target_can_async_p ())
1358 error (_("Asynchronous execution not supported on this target."));
1360 /* If we are not asked to run in the bg, then prepare to run in the
1361 foreground, synchronously. */
1362 if (!async_exec
&& target_can_async_p ())
1364 /* Simulate synchronous execution. */
1365 async_disable_stdin ();
1369 until_break_command (arg
, from_tty
, 0);
1371 until_next_command (from_tty
);
1375 advance_command (char *arg
, int from_tty
)
1380 ensure_not_tfind_mode ();
1381 ensure_valid_thread ();
1382 ensure_not_running ();
1385 error_no_arg (_("a location"));
1387 /* Find out whether we must run in the background. */
1389 async_exec
= strip_bg_char (&arg
);
1391 /* If we must run in the background, but the target can't do it,
1393 if (async_exec
&& !target_can_async_p ())
1394 error (_("Asynchronous execution not supported on this target."));
1396 /* If we are not asked to run in the bg, then prepare to run in the
1397 foreground, synchronously. */
1398 if (!async_exec
&& target_can_async_p ())
1400 /* Simulate synchronous execution. */
1401 async_disable_stdin ();
1404 until_break_command (arg
, from_tty
, 1);
1407 /* Print the result of a function at the end of a 'finish' command. */
1410 print_return_value (struct type
*func_type
, struct type
*value_type
)
1412 struct gdbarch
*gdbarch
= get_regcache_arch (stop_registers
);
1413 struct cleanup
*old_chain
;
1414 struct ui_stream
*stb
;
1415 struct value
*value
;
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
, func_type
, 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
, func_type
, value_type
, stop_registers
,
1435 value_contents_raw (value
), NULL
);
1437 case RETURN_VALUE_STRUCT_CONVENTION
:
1441 internal_error (__FILE__
, __LINE__
, _("bad switch"));
1446 struct value_print_options opts
;
1449 stb
= ui_out_stream_new (uiout
);
1450 old_chain
= make_cleanup_ui_out_stream_delete (stb
);
1451 ui_out_text (uiout
, "Value returned is ");
1452 ui_out_field_fmt (uiout
, "gdb-result-var", "$%d",
1453 record_latest_value (value
));
1454 ui_out_text (uiout
, " = ");
1455 get_raw_print_options (&opts
);
1456 value_print (value
, stb
->stream
, &opts
);
1457 ui_out_field_stream (uiout
, "return-value", stb
);
1458 ui_out_text (uiout
, "\n");
1459 do_cleanups (old_chain
);
1463 ui_out_text (uiout
, "Value returned has type: ");
1464 ui_out_field_string (uiout
, "return-type", TYPE_NAME (value_type
));
1465 ui_out_text (uiout
, ".");
1466 ui_out_text (uiout
, " Cannot determine contents\n");
1470 /* Stuff that needs to be done by the finish command after the target
1471 has stopped. In asynchronous mode, we wait for the target to stop
1472 in the call to poll or select in the event loop, so it is
1473 impossible to do all the stuff as part of the finish_command
1474 function itself. The only chance we have to complete this command
1475 is in fetch_inferior_event, which is called by the event loop as
1476 soon as it detects that the target has stopped. */
1478 struct finish_command_continuation_args
1480 /* The thread that as current when the command was executed. */
1482 struct breakpoint
*breakpoint
;
1483 struct symbol
*function
;
1487 finish_command_continuation (void *arg
, int err
)
1489 struct finish_command_continuation_args
*a
= arg
;
1493 struct thread_info
*tp
= NULL
;
1496 if (!ptid_equal (inferior_ptid
, null_ptid
)
1497 && target_has_execution
1498 && is_stopped (inferior_ptid
))
1500 tp
= inferior_thread ();
1501 bs
= tp
->control
.stop_bpstat
;
1504 if (bpstat_find_breakpoint (bs
, a
->breakpoint
) != NULL
1505 && a
->function
!= NULL
)
1507 struct type
*value_type
;
1509 value_type
= TYPE_TARGET_TYPE (SYMBOL_TYPE (a
->function
));
1511 internal_error (__FILE__
, __LINE__
,
1512 _("finish_command: function has no target type"));
1514 if (TYPE_CODE (value_type
) != TYPE_CODE_VOID
)
1516 volatile struct gdb_exception ex
;
1518 TRY_CATCH (ex
, RETURN_MASK_ALL
)
1520 /* print_return_value can throw an exception in some
1521 circumstances. We need to catch this so that we still
1522 delete the breakpoint. */
1523 print_return_value (SYMBOL_TYPE (a
->function
), value_type
);
1526 exception_print (gdb_stdout
, ex
);
1530 /* We suppress normal call of normal_stop observer and do it
1531 here so that the *stopped notification includes the return
1533 if (bs
!= NULL
&& tp
->control
.proceed_to_finish
)
1534 observer_notify_normal_stop (bs
, 1 /* print frame */);
1537 delete_breakpoint (a
->breakpoint
);
1538 delete_longjmp_breakpoint (a
->thread
);
1542 finish_command_continuation_free_arg (void *arg
)
1547 /* finish_backward -- helper function for finish_command. */
1550 finish_backward (struct symbol
*function
)
1552 struct symtab_and_line sal
;
1553 struct thread_info
*tp
= inferior_thread ();
1555 CORE_ADDR func_addr
;
1557 pc
= get_frame_pc (get_current_frame ());
1559 if (find_pc_partial_function (pc
, NULL
, &func_addr
, NULL
) == 0)
1560 internal_error (__FILE__
, __LINE__
,
1561 _("Finish: couldn't find function."));
1563 sal
= find_pc_line (func_addr
, 0);
1565 tp
->control
.proceed_to_finish
= 1;
1566 /* Special case: if we're sitting at the function entry point,
1567 then all we need to do is take a reverse singlestep. We
1568 don't need to set a breakpoint, and indeed it would do us
1571 Note that this can only happen at frame #0, since there's
1572 no way that a function up the stack can have a return address
1573 that's equal to its entry point. */
1577 struct frame_info
*frame
= get_selected_frame (NULL
);
1578 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
1579 struct symtab_and_line sr_sal
;
1581 /* Set a step-resume at the function's entry point. Once that's
1582 hit, we'll do one more step backwards. */
1585 sr_sal
.pspace
= get_frame_program_space (frame
);
1586 insert_step_resume_breakpoint_at_sal (gdbarch
,
1587 sr_sal
, null_frame_id
);
1589 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
1593 /* We're almost there -- we just need to back up by one more
1595 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1596 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
1600 /* finish_forward -- helper function for finish_command. */
1603 finish_forward (struct symbol
*function
, struct frame_info
*frame
)
1605 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
1606 struct symtab_and_line sal
;
1607 struct thread_info
*tp
= inferior_thread ();
1608 struct breakpoint
*breakpoint
;
1609 struct cleanup
*old_chain
;
1610 struct finish_command_continuation_args
*cargs
;
1611 int thread
= tp
->num
;
1613 sal
= find_pc_line (get_frame_pc (frame
), 0);
1614 sal
.pc
= get_frame_pc (frame
);
1616 breakpoint
= set_momentary_breakpoint (gdbarch
, sal
,
1617 get_stack_frame_id (frame
),
1620 old_chain
= make_cleanup_delete_breakpoint (breakpoint
);
1622 set_longjmp_breakpoint (tp
, get_frame_id (frame
));
1623 make_cleanup (delete_longjmp_breakpoint_cleanup
, &thread
);
1625 /* We want stop_registers, please... */
1626 tp
->control
.proceed_to_finish
= 1;
1627 cargs
= xmalloc (sizeof (*cargs
));
1629 cargs
->thread
= thread
;
1630 cargs
->breakpoint
= breakpoint
;
1631 cargs
->function
= function
;
1632 add_continuation (tp
, finish_command_continuation
, cargs
,
1633 finish_command_continuation_free_arg
);
1634 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
1636 discard_cleanups (old_chain
);
1637 if (!target_can_async_p ())
1638 do_all_continuations (0);
1641 /* "finish": Set a temporary breakpoint at the place the selected
1642 frame will return to, then continue. */
1645 finish_command (char *arg
, int from_tty
)
1647 struct frame_info
*frame
;
1648 struct symbol
*function
;
1653 ensure_not_tfind_mode ();
1654 ensure_valid_thread ();
1655 ensure_not_running ();
1657 /* Find out whether we must run in the background. */
1659 async_exec
= strip_bg_char (&arg
);
1661 /* If we must run in the background, but the target can't do it,
1663 if (async_exec
&& !target_can_async_p ())
1664 error (_("Asynchronous execution not supported on this target."));
1666 /* If we are not asked to run in the bg, then prepare to run in the
1667 foreground, synchronously. */
1668 if (!async_exec
&& target_can_async_p ())
1670 /* Simulate synchronous execution. */
1671 async_disable_stdin ();
1675 error (_("The \"finish\" command does not take any arguments."));
1677 frame
= get_prev_frame (get_selected_frame (_("No selected frame.")));
1679 error (_("\"finish\" not meaningful in the outermost frame."));
1681 clear_proceed_status ();
1683 /* Finishing from an inline frame is completely different. We don't
1684 try to show the "return value" - no way to locate it. So we do
1685 not need a completion. */
1686 if (get_frame_type (get_selected_frame (_("No selected frame.")))
1689 /* Claim we are stepping in the calling frame. An empty step
1690 range means that we will stop once we aren't in a function
1691 called by that frame. We don't use the magic "1" value for
1692 step_range_end, because then infrun will think this is nexti,
1693 and not step over the rest of this inlined function call. */
1694 struct thread_info
*tp
= inferior_thread ();
1695 struct symtab_and_line empty_sal
;
1697 init_sal (&empty_sal
);
1698 set_step_info (frame
, empty_sal
);
1699 tp
->control
.step_range_start
= get_frame_pc (frame
);
1700 tp
->control
.step_range_end
= tp
->control
.step_range_start
;
1701 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1703 /* Print info on the selected frame, including level number but not
1707 printf_filtered (_("Run till exit from "));
1708 print_stack_frame (get_selected_frame (NULL
), 1, LOCATION
);
1711 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
1715 /* Find the function we will return from. */
1717 function
= find_pc_function (get_frame_pc (get_selected_frame (NULL
)));
1719 /* Print info on the selected frame, including level number but not
1723 if (execution_direction
== EXEC_REVERSE
)
1724 printf_filtered (_("Run back to call of "));
1726 printf_filtered (_("Run till exit from "));
1728 print_stack_frame (get_selected_frame (NULL
), 1, LOCATION
);
1731 if (execution_direction
== EXEC_REVERSE
)
1732 finish_backward (function
);
1734 finish_forward (function
, frame
);
1739 program_info (char *args
, int from_tty
)
1743 struct thread_info
*tp
;
1746 if (!target_has_execution
)
1748 printf_filtered (_("The program being debugged is not being run.\n"));
1753 ptid
= inferior_ptid
;
1756 struct target_waitstatus ws
;
1758 get_last_target_status (&ptid
, &ws
);
1761 if (ptid_equal (ptid
, null_ptid
) || is_exited (ptid
))
1762 error (_("Invalid selected thread."));
1763 else if (is_running (ptid
))
1764 error (_("Selected thread is running."));
1766 tp
= find_thread_ptid (ptid
);
1767 bs
= tp
->control
.stop_bpstat
;
1768 stat
= bpstat_num (&bs
, &num
);
1770 target_files_info ();
1771 printf_filtered (_("Program stopped at %s.\n"),
1772 paddress (target_gdbarch
, stop_pc
));
1773 if (tp
->control
.stop_step
)
1774 printf_filtered (_("It stopped after being stepped.\n"));
1777 /* There may be several breakpoints in the same place, so this
1778 isn't as strange as it seems. */
1783 printf_filtered (_("It stopped at a breakpoint "
1784 "that has since been deleted.\n"));
1787 printf_filtered (_("It stopped at breakpoint %d.\n"), num
);
1788 stat
= bpstat_num (&bs
, &num
);
1791 else if (tp
->suspend
.stop_signal
!= TARGET_SIGNAL_0
)
1793 printf_filtered (_("It stopped with signal %s, %s.\n"),
1794 target_signal_to_name (tp
->suspend
.stop_signal
),
1795 target_signal_to_string (tp
->suspend
.stop_signal
));
1800 printf_filtered (_("Type \"info stack\" or \"info "
1801 "registers\" for more information.\n"));
1806 environment_info (char *var
, int from_tty
)
1810 char *val
= get_in_environ (current_inferior ()->environment
, var
);
1814 puts_filtered (var
);
1815 puts_filtered (" = ");
1816 puts_filtered (val
);
1817 puts_filtered ("\n");
1821 puts_filtered ("Environment variable \"");
1822 puts_filtered (var
);
1823 puts_filtered ("\" not defined.\n");
1828 char **vector
= environ_vector (current_inferior ()->environment
);
1832 puts_filtered (*vector
++);
1833 puts_filtered ("\n");
1839 set_environment_command (char *arg
, int from_tty
)
1841 char *p
, *val
, *var
;
1845 error_no_arg (_("environment variable and value"));
1847 /* Find seperation between variable name and value. */
1848 p
= (char *) strchr (arg
, '=');
1849 val
= (char *) strchr (arg
, ' ');
1851 if (p
!= 0 && val
!= 0)
1853 /* We have both a space and an equals. If the space is before the
1854 equals, walk forward over the spaces til we see a nonspace
1855 (possibly the equals). */
1860 /* Now if the = is after the char following the spaces,
1861 take the char following the spaces. */
1865 else if (val
!= 0 && p
== 0)
1869 error_no_arg (_("environment variable to set"));
1871 if (p
== 0 || p
[1] == 0)
1875 p
= arg
+ strlen (arg
); /* So that savestring below will work. */
1879 /* Not setting variable value to null. */
1881 while (*val
== ' ' || *val
== '\t')
1885 while (p
!= arg
&& (p
[-1] == ' ' || p
[-1] == '\t'))
1888 var
= savestring (arg
, p
- arg
);
1891 printf_filtered (_("Setting environment variable "
1892 "\"%s\" to null value.\n"),
1894 set_in_environ (current_inferior ()->environment
, var
, "");
1897 set_in_environ (current_inferior ()->environment
, var
, val
);
1902 unset_environment_command (char *var
, int from_tty
)
1906 /* If there is no argument, delete all environment variables.
1907 Ask for confirmation if reading from the terminal. */
1908 if (!from_tty
|| query (_("Delete all environment variables? ")))
1910 free_environ (current_inferior ()->environment
);
1911 current_inferior ()->environment
= make_environ ();
1915 unset_in_environ (current_inferior ()->environment
, var
);
1918 /* Handle the execution path (PATH variable). */
1920 static const char path_var_name
[] = "PATH";
1923 path_info (char *args
, int from_tty
)
1925 puts_filtered ("Executable and object file path: ");
1926 puts_filtered (get_in_environ (current_inferior ()->environment
,
1928 puts_filtered ("\n");
1931 /* Add zero or more directories to the front of the execution path. */
1934 path_command (char *dirname
, int from_tty
)
1940 env
= get_in_environ (current_inferior ()->environment
, path_var_name
);
1941 /* Can be null if path is not set. */
1944 exec_path
= xstrdup (env
);
1945 mod_path (dirname
, &exec_path
);
1946 set_in_environ (current_inferior ()->environment
, path_var_name
, exec_path
);
1949 path_info ((char *) NULL
, from_tty
);
1953 /* Print out the machine register regnum. If regnum is -1, print all
1954 registers (print_all == 1) or all non-float and non-vector
1955 registers (print_all == 0).
1957 For most machines, having all_registers_info() print the
1958 register(s) one per line is good enough. If a different format is
1959 required, (eg, for MIPS or Pyramid 90x, which both have lots of
1960 regs), or there is an existing convention for showing all the
1961 registers, define the architecture method PRINT_REGISTERS_INFO to
1962 provide that format. */
1965 default_print_registers_info (struct gdbarch
*gdbarch
,
1966 struct ui_file
*file
,
1967 struct frame_info
*frame
,
1968 int regnum
, int print_all
)
1971 const int numregs
= gdbarch_num_regs (gdbarch
)
1972 + gdbarch_num_pseudo_regs (gdbarch
);
1974 for (i
= 0; i
< numregs
; i
++)
1976 struct type
*regtype
;
1979 /* Decide between printing all regs, non-float / vector regs, or
1985 if (!gdbarch_register_reggroup_p (gdbarch
, i
, all_reggroup
))
1990 if (!gdbarch_register_reggroup_p (gdbarch
, i
, general_reggroup
))
2000 /* If the register name is empty, it is undefined for this
2001 processor, so don't display anything. */
2002 if (gdbarch_register_name (gdbarch
, i
) == NULL
2003 || *(gdbarch_register_name (gdbarch
, i
)) == '\0')
2006 fputs_filtered (gdbarch_register_name (gdbarch
, i
), file
);
2007 print_spaces_filtered (15 - strlen (gdbarch_register_name
2008 (gdbarch
, i
)), file
);
2010 regtype
= register_type (gdbarch
, i
);
2011 val
= allocate_value (regtype
);
2013 /* Get the data in raw format. */
2014 if (! frame_register_read (frame
, i
, value_contents_raw (val
)))
2016 fprintf_filtered (file
, "*value not available*\n");
2020 /* If virtual format is floating, print it that way, and in raw
2022 if (TYPE_CODE (regtype
) == TYPE_CODE_FLT
2023 || TYPE_CODE (regtype
) == TYPE_CODE_DECFLOAT
)
2026 struct value_print_options opts
;
2027 const gdb_byte
*valaddr
= value_contents_for_printing (val
);
2029 get_user_print_options (&opts
);
2033 value_contents_for_printing (val
),
2034 value_embedded_offset (val
), 0,
2035 file
, 0, val
, &opts
, current_language
);
2037 fprintf_filtered (file
, "\t(raw 0x");
2038 for (j
= 0; j
< register_size (gdbarch
, i
); j
++)
2042 if (gdbarch_byte_order (gdbarch
) == BFD_ENDIAN_BIG
)
2045 idx
= register_size (gdbarch
, i
) - 1 - j
;
2046 fprintf_filtered (file
, "%02x", (unsigned char) valaddr
[idx
]);
2048 fprintf_filtered (file
, ")");
2052 struct value_print_options opts
;
2054 /* Print the register in hex. */
2055 get_formatted_print_options (&opts
, 'x');
2058 value_contents_for_printing (val
),
2059 value_embedded_offset (val
), 0,
2060 file
, 0, val
, &opts
, current_language
);
2061 /* If not a vector register, print it also according to its
2063 if (TYPE_VECTOR (regtype
) == 0)
2065 get_user_print_options (&opts
);
2067 fprintf_filtered (file
, "\t");
2069 value_contents_for_printing (val
),
2070 value_embedded_offset (val
), 0,
2071 file
, 0, val
, &opts
, current_language
);
2075 fprintf_filtered (file
, "\n");
2080 registers_info (char *addr_exp
, int fpregs
)
2082 struct frame_info
*frame
;
2083 struct gdbarch
*gdbarch
;
2085 if (!target_has_registers
)
2086 error (_("The program has no registers now."));
2087 frame
= get_selected_frame (NULL
);
2088 gdbarch
= get_frame_arch (frame
);
2092 gdbarch_print_registers_info (gdbarch
, gdb_stdout
,
2097 while (*addr_exp
!= '\0')
2102 /* Keep skipping leading white space. */
2103 if (isspace ((*addr_exp
)))
2109 /* Discard any leading ``$''. Check that there is something
2110 resembling a register following it. */
2111 if (addr_exp
[0] == '$')
2113 if (isspace ((*addr_exp
)) || (*addr_exp
) == '\0')
2114 error (_("Missing register name"));
2116 /* Find the start/end of this register name/num/group. */
2118 while ((*addr_exp
) != '\0' && !isspace ((*addr_exp
)))
2122 /* Figure out what we've found and display it. */
2124 /* A register name? */
2126 int regnum
= user_reg_map_name_to_regnum (gdbarch
, start
, end
- start
);
2130 /* User registers lie completely outside of the range of
2131 normal registers. Catch them early so that the target
2133 if (regnum
>= gdbarch_num_regs (gdbarch
)
2134 + gdbarch_num_pseudo_regs (gdbarch
))
2136 struct value_print_options opts
;
2137 struct value
*val
= value_of_user_reg (regnum
, frame
);
2139 printf_filtered ("%s: ", start
);
2140 get_formatted_print_options (&opts
, 'x');
2141 val_print_scalar_formatted (check_typedef (value_type (val
)),
2142 value_contents_for_printing (val
),
2143 value_embedded_offset (val
),
2145 &opts
, 0, gdb_stdout
);
2146 printf_filtered ("\n");
2149 gdbarch_print_registers_info (gdbarch
, gdb_stdout
,
2150 frame
, regnum
, fpregs
);
2155 /* A register group? */
2157 struct reggroup
*group
;
2159 for (group
= reggroup_next (gdbarch
, NULL
);
2161 group
= reggroup_next (gdbarch
, group
))
2163 /* Don't bother with a length check. Should the user
2164 enter a short register group name, go with the first
2165 group that matches. */
2166 if (strncmp (start
, reggroup_name (group
), end
- start
) == 0)
2174 regnum
< gdbarch_num_regs (gdbarch
)
2175 + gdbarch_num_pseudo_regs (gdbarch
);
2178 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, group
))
2179 gdbarch_print_registers_info (gdbarch
,
2187 /* Nothing matched. */
2188 error (_("Invalid register `%.*s'"), (int) (end
- start
), start
);
2193 all_registers_info (char *addr_exp
, int from_tty
)
2195 registers_info (addr_exp
, 1);
2199 nofp_registers_info (char *addr_exp
, int from_tty
)
2201 registers_info (addr_exp
, 0);
2205 print_vector_info (struct ui_file
*file
,
2206 struct frame_info
*frame
, const char *args
)
2208 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
2210 if (gdbarch_print_vector_info_p (gdbarch
))
2211 gdbarch_print_vector_info (gdbarch
, file
, frame
, args
);
2215 int printed_something
= 0;
2218 regnum
< gdbarch_num_regs (gdbarch
)
2219 + gdbarch_num_pseudo_regs (gdbarch
);
2222 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, vector_reggroup
))
2224 printed_something
= 1;
2225 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
2228 if (!printed_something
)
2229 fprintf_filtered (file
, "No vector information\n");
2234 vector_info (char *args
, int from_tty
)
2236 if (!target_has_registers
)
2237 error (_("The program has no registers now."));
2239 print_vector_info (gdb_stdout
, get_selected_frame (NULL
), args
);
2242 /* Kill the inferior process. Make us have no inferior. */
2245 kill_command (char *arg
, int from_tty
)
2247 /* FIXME: This should not really be inferior_ptid (or target_has_execution).
2248 It should be a distinct flag that indicates that a target is active, cuz
2249 some targets don't have processes! */
2251 if (ptid_equal (inferior_ptid
, null_ptid
))
2252 error (_("The program is not being run."));
2253 if (!query (_("Kill the program being debugged? ")))
2254 error (_("Not confirmed."));
2257 /* If we still have other inferiors to debug, then don't mess with
2258 with their threads. */
2259 if (!have_inferiors ())
2261 init_thread_list (); /* Destroy thread info. */
2263 /* Killing off the inferior can leave us with a core file. If
2264 so, print the state we are left in. */
2265 if (target_has_stack
)
2267 printf_filtered (_("In %s,\n"), target_longname
);
2268 print_stack_frame (get_selected_frame (NULL
), 1, SRC_AND_LOC
);
2271 bfd_cache_close_all ();
2274 /* Used in `attach&' command. ARG is a point to an integer
2275 representing a process id. Proceed threads of this process iff
2276 they stopped due to debugger request, and when they did, they
2277 reported a clean stop (TARGET_SIGNAL_0). Do not proceed threads
2278 that have been explicitly been told to stop. */
2281 proceed_after_attach_callback (struct thread_info
*thread
,
2284 int pid
= * (int *) arg
;
2286 if (ptid_get_pid (thread
->ptid
) == pid
2287 && !is_exited (thread
->ptid
)
2288 && !is_executing (thread
->ptid
)
2289 && !thread
->stop_requested
2290 && thread
->suspend
.stop_signal
== TARGET_SIGNAL_0
)
2292 switch_to_thread (thread
->ptid
);
2293 clear_proceed_status ();
2294 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
2301 proceed_after_attach (int pid
)
2303 /* Don't error out if the current thread is running, because
2304 there may be other stopped threads. */
2305 struct cleanup
*old_chain
;
2307 /* Backup current thread and selected frame. */
2308 old_chain
= make_cleanup_restore_current_thread ();
2310 iterate_over_threads (proceed_after_attach_callback
, &pid
);
2312 /* Restore selected ptid. */
2313 do_cleanups (old_chain
);
2318 * Should save/restore the tty state since it might be that the
2319 * program to be debugged was started on this tty and it wants
2320 * the tty in some state other than what we want. If it's running
2321 * on another terminal or without a terminal, then saving and
2322 * restoring the tty state is a harmless no-op.
2323 * This only needs to be done if we are attaching to a process.
2326 /* attach_command --
2327 takes a program started up outside of gdb and ``attaches'' to it.
2328 This stops it cold in its tracks and allows us to start debugging it.
2329 and wait for the trace-trap that results from attaching. */
2332 attach_command_post_wait (char *args
, int from_tty
, int async_exec
)
2335 char *full_exec_path
= NULL
;
2336 struct inferior
*inferior
;
2338 inferior
= current_inferior ();
2339 inferior
->control
.stop_soon
= NO_STOP_QUIETLY
;
2341 /* If no exec file is yet known, try to determine it from the
2343 exec_file
= (char *) get_exec_file (0);
2346 exec_file
= target_pid_to_exec_file (PIDGET (inferior_ptid
));
2349 /* It's possible we don't have a full path, but rather just a
2350 filename. Some targets, such as HP-UX, don't provide the
2353 Attempt to qualify the filename against the source path.
2354 (If that fails, we'll just fall back on the original
2355 filename. Not much more we can do...) */
2357 if (!source_full_path_of (exec_file
, &full_exec_path
))
2358 full_exec_path
= xstrdup (exec_file
);
2360 exec_file_attach (full_exec_path
, from_tty
);
2361 symbol_file_add_main (full_exec_path
, from_tty
);
2366 reopen_exec_file ();
2370 /* Take any necessary post-attaching actions for this platform. */
2371 target_post_attach (PIDGET (inferior_ptid
));
2373 post_create_inferior (¤t_target
, from_tty
);
2375 /* Install inferior's terminal modes. */
2376 target_terminal_inferior ();
2380 /* The user requested an `attach&', so be sure to leave threads
2381 that didn't get a signal running. */
2383 /* Immediatelly resume all suspended threads of this inferior,
2384 and this inferior only. This should have no effect on
2385 already running threads. If a thread has been stopped with a
2386 signal, leave it be. */
2388 proceed_after_attach (inferior
->pid
);
2391 if (inferior_thread ()->suspend
.stop_signal
== TARGET_SIGNAL_0
)
2393 clear_proceed_status ();
2394 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
2400 /* The user requested a plain `attach', so be sure to leave
2401 the inferior stopped. */
2403 if (target_can_async_p ())
2404 async_enable_stdin ();
2406 /* At least the current thread is already stopped. */
2408 /* In all-stop, by definition, all threads have to be already
2409 stopped at this point. In non-stop, however, although the
2410 selected thread is stopped, others may still be executing.
2411 Be sure to explicitly stop all threads of the process. This
2412 should have no effect on already stopped threads. */
2414 target_stop (pid_to_ptid (inferior
->pid
));
2416 /* Tell the user/frontend where we're stopped. */
2418 if (deprecated_attach_hook
)
2419 deprecated_attach_hook ();
2423 struct attach_command_continuation_args
2431 attach_command_continuation (void *args
, int err
)
2433 struct attach_command_continuation_args
*a
= args
;
2438 attach_command_post_wait (a
->args
, a
->from_tty
, a
->async_exec
);
2442 attach_command_continuation_free_args (void *args
)
2444 struct attach_command_continuation_args
*a
= args
;
2451 attach_command (char *args
, int from_tty
)
2454 struct cleanup
*back_to
= make_cleanup (null_cleanup
, NULL
);
2456 dont_repeat (); /* Not for the faint of heart */
2458 if (gdbarch_has_global_solist (target_gdbarch
))
2459 /* Don't complain if all processes share the same symbol
2462 else if (target_has_execution
)
2464 if (query (_("A program is being debugged already. Kill it? ")))
2467 error (_("Not killed."));
2470 /* Clean up any leftovers from other runs. Some other things from
2471 this function should probably be moved into target_pre_inferior. */
2472 target_pre_inferior (from_tty
);
2474 if (non_stop
&& !target_supports_non_stop ())
2475 error (_("Cannot attach to this target in non-stop mode"));
2479 async_exec
= strip_bg_char (&args
);
2481 /* If we get a request for running in the bg but the target
2482 doesn't support it, error out. */
2483 if (async_exec
&& !target_can_async_p ())
2484 error (_("Asynchronous execution not supported on this target."));
2487 /* If we don't get a request of running in the bg, then we need
2488 to simulate synchronous (fg) execution. */
2489 if (!async_exec
&& target_can_async_p ())
2491 /* Simulate synchronous execution. */
2492 async_disable_stdin ();
2493 make_cleanup ((make_cleanup_ftype
*)async_enable_stdin
, NULL
);
2496 target_attach (args
, from_tty
);
2498 /* Set up the "saved terminal modes" of the inferior
2499 based on what modes we are starting it with. */
2500 target_terminal_init ();
2502 /* Set up execution context to know that we should return from
2503 wait_for_inferior as soon as the target reports a stop. */
2504 init_wait_for_inferior ();
2505 clear_proceed_status ();
2509 /* If we find that the current thread isn't stopped, explicitly
2510 do so now, because we're going to install breakpoints and
2514 /* The user requested an `attach&'; stop just one thread. */
2515 target_stop (inferior_ptid
);
2517 /* The user requested an `attach', so stop all threads of this
2519 target_stop (pid_to_ptid (ptid_get_pid (inferior_ptid
)));
2522 /* Some system don't generate traps when attaching to inferior.
2523 E.g. Mach 3 or GNU hurd. */
2524 if (!target_attach_no_wait
)
2526 struct inferior
*inferior
= current_inferior ();
2528 /* Careful here. See comments in inferior.h. Basically some
2529 OSes don't ignore SIGSTOPs on continue requests anymore. We
2530 need a way for handle_inferior_event to reset the stop_signal
2531 variable after an attach, and this is what
2532 STOP_QUIETLY_NO_SIGSTOP is for. */
2533 inferior
->control
.stop_soon
= STOP_QUIETLY_NO_SIGSTOP
;
2535 if (target_can_async_p ())
2537 /* sync_execution mode. Wait for stop. */
2538 struct attach_command_continuation_args
*a
;
2540 a
= xmalloc (sizeof (*a
));
2541 a
->args
= xstrdup (args
);
2542 a
->from_tty
= from_tty
;
2543 a
->async_exec
= async_exec
;
2544 add_inferior_continuation (attach_command_continuation
, a
,
2545 attach_command_continuation_free_args
);
2546 discard_cleanups (back_to
);
2550 wait_for_inferior ();
2553 attach_command_post_wait (args
, from_tty
, async_exec
);
2554 discard_cleanups (back_to
);
2557 /* We had just found out that the target was already attached to an
2558 inferior. PTID points at a thread of this new inferior, that is
2559 the most likely to be stopped right now, but not necessarily so.
2560 The new inferior is assumed to be already added to the inferior
2561 list at this point. If LEAVE_RUNNING, then leave the threads of
2562 this inferior running, except those we've explicitly seen reported
2566 notice_new_inferior (ptid_t ptid
, int leave_running
, int from_tty
)
2568 struct cleanup
* old_chain
;
2571 old_chain
= make_cleanup (null_cleanup
, NULL
);
2573 /* If in non-stop, leave threads as running as they were. If
2574 they're stopped for some reason other than us telling it to, the
2575 target reports a signal != TARGET_SIGNAL_0. We don't try to
2576 resume threads with such a stop signal. */
2577 async_exec
= non_stop
;
2579 if (!ptid_equal (inferior_ptid
, null_ptid
))
2580 make_cleanup_restore_current_thread ();
2582 switch_to_thread (ptid
);
2584 /* When we "notice" a new inferior we need to do all the things we
2585 would normally do if we had just attached to it. */
2587 if (is_executing (inferior_ptid
))
2589 struct inferior
*inferior
= current_inferior ();
2591 /* We're going to install breakpoints, and poke at memory,
2592 ensure that the inferior is stopped for a moment while we do
2594 target_stop (inferior_ptid
);
2596 inferior
->control
.stop_soon
= STOP_QUIETLY_REMOTE
;
2598 /* Wait for stop before proceeding. */
2599 if (target_can_async_p ())
2601 struct attach_command_continuation_args
*a
;
2603 a
= xmalloc (sizeof (*a
));
2604 a
->args
= xstrdup ("");
2605 a
->from_tty
= from_tty
;
2606 a
->async_exec
= async_exec
;
2607 add_inferior_continuation (attach_command_continuation
, a
,
2608 attach_command_continuation_free_args
);
2610 do_cleanups (old_chain
);
2614 wait_for_inferior ();
2617 async_exec
= leave_running
;
2618 attach_command_post_wait ("" /* args */, from_tty
, async_exec
);
2620 do_cleanups (old_chain
);
2625 * takes a program previously attached to and detaches it.
2626 * The program resumes execution and will no longer stop
2627 * on signals, etc. We better not have left any breakpoints
2628 * in the program or it'll die when it hits one. For this
2629 * to work, it may be necessary for the process to have been
2630 * previously attached. It *might* work if the program was
2631 * started via the normal ptrace (PTRACE_TRACEME).
2635 detach_command (char *args
, int from_tty
)
2637 dont_repeat (); /* Not for the faint of heart. */
2639 if (ptid_equal (inferior_ptid
, null_ptid
))
2640 error (_("The program is not being run."));
2642 disconnect_tracing (from_tty
);
2644 target_detach (args
, from_tty
);
2646 /* If the solist is global across inferiors, don't clear it when we
2647 detach from a single inferior. */
2648 if (!gdbarch_has_global_solist (target_gdbarch
))
2649 no_shared_libraries (NULL
, from_tty
);
2651 /* If we still have inferiors to debug, then don't mess with their
2653 if (!have_inferiors ())
2654 init_thread_list ();
2656 if (deprecated_detach_hook
)
2657 deprecated_detach_hook ();
2660 /* Disconnect from the current target without resuming it (leaving it
2661 waiting for a debugger).
2663 We'd better not have left any breakpoints in the program or the
2664 next debugger will get confused. Currently only supported for some
2665 remote targets, since the normal attach mechanisms don't work on
2666 stopped processes on some native platforms (e.g. GNU/Linux). */
2669 disconnect_command (char *args
, int from_tty
)
2671 dont_repeat (); /* Not for the faint of heart. */
2672 target_disconnect (args
, from_tty
);
2673 no_shared_libraries (NULL
, from_tty
);
2674 init_thread_list ();
2675 if (deprecated_detach_hook
)
2676 deprecated_detach_hook ();
2680 interrupt_target_1 (int all_threads
)
2685 ptid
= minus_one_ptid
;
2687 ptid
= inferior_ptid
;
2690 /* Tag the thread as having been explicitly requested to stop, so
2691 other parts of gdb know not to resume this thread automatically,
2692 if it was stopped due to an internal event. Limit this to
2693 non-stop mode, as when debugging a multi-threaded application in
2694 all-stop mode, we will only get one stop event --- it's undefined
2695 which thread will report the event. */
2697 set_stop_requested (ptid
, 1);
2700 /* Stop the execution of the target while running in async mode, in
2701 the backgound. In all-stop, stop the whole process. In non-stop
2702 mode, stop the current thread only by default, or stop all threads
2703 if the `-a' switch is used. */
2705 /* interrupt [-a] */
2707 interrupt_target_command (char *args
, int from_tty
)
2709 if (target_can_async_p ())
2711 int all_threads
= 0;
2713 dont_repeat (); /* Not for the faint of heart. */
2716 && strncmp (args
, "-a", sizeof ("-a") - 1) == 0)
2719 if (!non_stop
&& all_threads
)
2720 error (_("-a is meaningless in all-stop mode."));
2722 interrupt_target_1 (all_threads
);
2727 print_float_info (struct ui_file
*file
,
2728 struct frame_info
*frame
, const char *args
)
2730 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
2732 if (gdbarch_print_float_info_p (gdbarch
))
2733 gdbarch_print_float_info (gdbarch
, file
, frame
, args
);
2737 int printed_something
= 0;
2740 regnum
< gdbarch_num_regs (gdbarch
)
2741 + gdbarch_num_pseudo_regs (gdbarch
);
2744 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, float_reggroup
))
2746 printed_something
= 1;
2747 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
2750 if (!printed_something
)
2751 fprintf_filtered (file
, "No floating-point info "
2752 "available for this processor.\n");
2757 float_info (char *args
, int from_tty
)
2759 if (!target_has_registers
)
2760 error (_("The program has no registers now."));
2762 print_float_info (gdb_stdout
, get_selected_frame (NULL
), args
);
2766 unset_command (char *args
, int from_tty
)
2768 printf_filtered (_("\"unset\" must be followed by the "
2769 "name of an unset subcommand.\n"));
2770 help_list (unsetlist
, "unset ", -1, gdb_stdout
);
2774 _initialize_infcmd (void)
2776 struct cmd_list_element
*c
= NULL
;
2778 /* Add the filename of the terminal connected to inferior I/O. */
2779 add_setshow_filename_cmd ("inferior-tty", class_run
,
2780 &inferior_io_terminal_scratch
, _("\
2781 Set terminal for future runs of program being debugged."), _("\
2782 Show terminal for future runs of program being debugged."), _("\
2783 Usage: set inferior-tty /dev/pts/1"),
2784 set_inferior_tty_command
,
2785 show_inferior_tty_command
,
2786 &setlist
, &showlist
);
2787 add_com_alias ("tty", "set inferior-tty", class_alias
, 0);
2789 add_setshow_optional_filename_cmd ("args", class_run
,
2790 &inferior_args_scratch
, _("\
2791 Set argument list to give program being debugged when it is started."), _("\
2792 Show argument list to give program being debugged when it is started."), _("\
2793 Follow this command with any number of args, to be passed to the program."),
2796 &setlist
, &showlist
);
2798 c
= add_cmd ("environment", no_class
, environment_info
, _("\
2799 The environment to give the program, or one variable's value.\n\
2800 With an argument VAR, prints the value of environment variable VAR to\n\
2801 give the program being debugged. With no arguments, prints the entire\n\
2802 environment to be given to the program."), &showlist
);
2803 set_cmd_completer (c
, noop_completer
);
2805 add_prefix_cmd ("unset", no_class
, unset_command
,
2806 _("Complement to certain \"set\" commands."),
2807 &unsetlist
, "unset ", 0, &cmdlist
);
2809 c
= add_cmd ("environment", class_run
, unset_environment_command
, _("\
2810 Cancel environment variable VAR for the program.\n\
2811 This does not affect the program until the next \"run\" command."),
2813 set_cmd_completer (c
, noop_completer
);
2815 c
= add_cmd ("environment", class_run
, set_environment_command
, _("\
2816 Set environment variable value to give the program.\n\
2817 Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\
2818 VALUES of environment variables are uninterpreted strings.\n\
2819 This does not affect the program until the next \"run\" command."),
2821 set_cmd_completer (c
, noop_completer
);
2823 c
= add_com ("path", class_files
, path_command
, _("\
2824 Add directory DIR(s) to beginning of search path for object files.\n\
2825 $cwd in the path means the current working directory.\n\
2826 This path is equivalent to the $PATH shell variable. It is a list of\n\
2827 directories, separated by colons. These directories are searched to find\n\
2828 fully linked executable files and separately compiled object files as \
2830 set_cmd_completer (c
, filename_completer
);
2832 c
= add_cmd ("paths", no_class
, path_info
, _("\
2833 Current search path for finding object files.\n\
2834 $cwd in the path means the current working directory.\n\
2835 This path is equivalent to the $PATH shell variable. It is a list of\n\
2836 directories, separated by colons. These directories are searched to find\n\
2837 fully linked executable files and separately compiled object files as \
2840 set_cmd_completer (c
, noop_completer
);
2842 add_prefix_cmd ("kill", class_run
, kill_command
,
2843 _("Kill execution of program being debugged."),
2844 &killlist
, "kill ", 0, &cmdlist
);
2846 add_com ("attach", class_run
, attach_command
, _("\
2847 Attach to a process or file outside of GDB.\n\
2848 This command attaches to another target, of the same type as your last\n\
2849 \"target\" command (\"info files\" will show your target stack).\n\
2850 The command may take as argument a process id or a device file.\n\
2851 For a process id, you must have permission to send the process a signal,\n\
2852 and it must have the same effective uid as the debugger.\n\
2853 When using \"attach\" with a process id, the debugger finds the\n\
2854 program running in the process, looking first in the current working\n\
2855 directory, or (if not found there) using the source file search path\n\
2856 (see the \"directory\" command). You can also use the \"file\" command\n\
2857 to specify the program, and to load its symbol table."));
2859 add_prefix_cmd ("detach", class_run
, detach_command
, _("\
2860 Detach a process or file previously attached.\n\
2861 If a process, it is no longer traced, and it continues its execution. If\n\
2862 you were debugging a file, the file is closed and gdb no longer accesses it."),
2863 &detachlist
, "detach ", 0, &cmdlist
);
2865 add_com ("disconnect", class_run
, disconnect_command
, _("\
2866 Disconnect from a target.\n\
2867 The target will wait for another debugger to connect. Not available for\n\
2870 add_com ("signal", class_run
, signal_command
, _("\
2871 Continue program giving it signal specified by the argument.\n\
2872 An argument of \"0\" means continue program without giving it a signal."));
2874 add_com ("stepi", class_run
, stepi_command
, _("\
2875 Step one instruction exactly.\n\
2876 Argument N means do this N times (or till program stops for another \
2878 add_com_alias ("si", "stepi", class_alias
, 0);
2880 add_com ("nexti", class_run
, nexti_command
, _("\
2881 Step one instruction, but proceed through subroutine calls.\n\
2882 Argument N means do this N times (or till program stops for another \
2884 add_com_alias ("ni", "nexti", class_alias
, 0);
2886 add_com ("finish", class_run
, finish_command
, _("\
2887 Execute until selected stack frame returns.\n\
2888 Upon return, the value returned is printed and put in the value history."));
2889 add_com_alias ("fin", "finish", class_run
, 1);
2891 add_com ("next", class_run
, next_command
, _("\
2892 Step program, proceeding through subroutine calls.\n\
2893 Like the \"step\" command as long as subroutine calls do not happen;\n\
2894 when they do, the call is treated as one instruction.\n\
2895 Argument N means do this N times (or till program stops for another \
2897 add_com_alias ("n", "next", class_run
, 1);
2899 add_com_alias ("S", "next", class_run
, 1);
2901 add_com ("step", class_run
, step_command
, _("\
2902 Step program until it reaches a different source line.\n\
2903 Argument N means do this N times (or till program stops for another \
2905 add_com_alias ("s", "step", class_run
, 1);
2907 c
= add_com ("until", class_run
, until_command
, _("\
2908 Execute until the program reaches a source line greater than the current\n\
2909 or a specified location (same args as break command) within the current \
2911 set_cmd_completer (c
, location_completer
);
2912 add_com_alias ("u", "until", class_run
, 1);
2914 c
= add_com ("advance", class_run
, advance_command
, _("\
2915 Continue the program up to the given location (same form as args for break \
2917 Execution will also stop upon exit from the current stack frame."));
2918 set_cmd_completer (c
, location_completer
);
2920 c
= add_com ("jump", class_run
, jump_command
, _("\
2921 Continue program being debugged at specified line or address.\n\
2922 Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\
2923 for an address to start at."));
2924 set_cmd_completer (c
, location_completer
);
2928 c
= add_com ("go", class_run
, go_command
, _("\
2929 Usage: go <location>\n\
2930 Continue program being debugged, stopping at specified line or \n\
2932 Give as argument either LINENUM or *ADDR, where ADDR is an \n\
2933 expression for an address to start at.\n\
2934 This command is a combination of tbreak and jump."));
2935 set_cmd_completer (c
, location_completer
);
2939 add_com_alias ("g", "go", class_run
, 1);
2941 add_com ("continue", class_run
, continue_command
, _("\
2942 Continue program being debugged, after signal or breakpoint.\n\
2943 If proceeding from breakpoint, a number N may be used as an argument,\n\
2944 which means to set the ignore count of that breakpoint to N - 1 (so that\n\
2945 the breakpoint won't break until the Nth time it is reached).\n\
2947 If non-stop mode is enabled, continue only the current thread,\n\
2948 otherwise all the threads in the program are continued. To \n\
2949 continue all stopped threads in non-stop mode, use the -a option.\n\
2950 Specifying -a and an ignore count simultaneously is an error."));
2951 add_com_alias ("c", "cont", class_run
, 1);
2952 add_com_alias ("fg", "cont", class_run
, 1);
2954 c
= add_com ("run", class_run
, run_command
, _("\
2955 Start debugged program. You may specify arguments to give it.\n\
2956 Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\
2957 Input and output redirection with \">\", \"<\", or \">>\" are also \
2959 With no arguments, uses arguments last specified (with \"run\" \
2960 or \"set args\").\n\
2961 To cancel previous arguments and run with no arguments,\n\
2962 use \"set args\" without arguments."));
2963 set_cmd_completer (c
, filename_completer
);
2964 add_com_alias ("r", "run", class_run
, 1);
2966 add_com ("R", class_run
, run_no_args_command
,
2967 _("Start debugged program with no arguments."));
2969 c
= add_com ("start", class_run
, start_command
, _("\
2970 Run the debugged program until the beginning of the main procedure.\n\
2971 You may specify arguments to give to your program, just as with the\n\
2972 \"run\" command."));
2973 set_cmd_completer (c
, filename_completer
);
2975 add_com ("interrupt", class_run
, interrupt_target_command
,
2976 _("Interrupt the execution of the debugged program.\n\
2977 If non-stop mode is enabled, interrupt only the current thread,\n\
2978 otherwise all the threads in the program are stopped. To \n\
2979 interrupt all running threads in non-stop mode, use the -a option."));
2981 add_info ("registers", nofp_registers_info
, _("\
2982 List of integer registers and their contents, for selected stack frame.\n\
2983 Register name as argument means describe only that register."));
2984 add_info_alias ("r", "registers", 1);
2987 add_com ("lr", class_info
, nofp_registers_info
, _("\
2988 List of integer registers and their contents, for selected stack frame.\n\
2989 Register name as argument means describe only that register."));
2990 add_info ("all-registers", all_registers_info
, _("\
2991 List of all registers and their contents, for selected stack frame.\n\
2992 Register name as argument means describe only that register."));
2994 add_info ("program", program_info
,
2995 _("Execution status of the program."));
2997 add_info ("float", float_info
,
2998 _("Print the status of the floating point unit\n"));
3000 add_info ("vector", vector_info
,
3001 _("Print the status of the vector unit\n"));