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
)
945 struct step_1_continuation_args
*a
= args
;
947 if (target_has_execution
)
949 struct thread_info
*tp
;
951 tp
= inferior_thread ();
952 if (tp
->step_multi
&& tp
->control
.stop_step
)
954 /* There are more steps to make, and we did stop due to
955 ending a stepping range. Do another step. */
956 step_once (a
->skip_subroutines
, a
->single_inst
,
957 a
->count
- 1, a
->thread
);
963 /* We either stopped for some reason that is not stepping, or there
964 are no further steps to make. Cleanup. */
965 if (!a
->single_inst
|| a
->skip_subroutines
)
966 delete_longjmp_breakpoint (a
->thread
);
969 /* Do just one step operation. This is useful to implement the 'step
970 n' kind of commands. In case of asynchronous targets, we will have
971 to set up a continuation to be done after the target stops (after
972 this one step). For synch targets, the caller handles further
976 step_once (int skip_subroutines
, int single_inst
, int count
, int thread
)
978 struct frame_info
*frame
= get_current_frame ();
982 /* Don't assume THREAD is a valid thread id. It is set to -1 if
983 the longjmp breakpoint was not required. Use the
984 INFERIOR_PTID thread instead, which is the same thread when
986 struct thread_info
*tp
= inferior_thread ();
988 clear_proceed_status ();
995 /* Step at an inlined function behaves like "down". */
996 if (!skip_subroutines
&& !single_inst
997 && inline_skipped_frames (inferior_ptid
))
1001 /* Pretend that we've ran. */
1002 resume_ptid
= user_visible_resume_ptid (1);
1003 set_running (resume_ptid
, 1);
1005 step_into_inline_frame (inferior_ptid
);
1007 step_once (skip_subroutines
, single_inst
, count
- 1, thread
);
1010 /* Pretend that we've stopped. */
1013 if (target_can_async_p ())
1014 inferior_event_handler (INF_EXEC_COMPLETE
, NULL
);
1019 pc
= get_frame_pc (frame
);
1020 find_pc_line_pc_range (pc
,
1021 &tp
->control
.step_range_start
,
1022 &tp
->control
.step_range_end
);
1024 /* If we have no line info, switch to stepi mode. */
1025 if (tp
->control
.step_range_end
== 0 && step_stop_if_no_debug
)
1026 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1027 else if (tp
->control
.step_range_end
== 0)
1031 if (find_pc_partial_function (pc
, &name
,
1032 &tp
->control
.step_range_start
,
1033 &tp
->control
.step_range_end
) == 0)
1034 error (_("Cannot find bounds of current function"));
1036 target_terminal_ours ();
1037 printf_filtered (_("Single stepping until exit from function %s,"
1038 "\nwhich has no line number information.\n"),
1044 /* Say we are stepping, but stop after one insn whatever it does. */
1045 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1046 if (!skip_subroutines
)
1048 Don't step over function calls, not even to functions lacking
1050 tp
->control
.step_over_calls
= STEP_OVER_NONE
;
1053 if (skip_subroutines
)
1054 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1056 tp
->step_multi
= (count
> 1);
1057 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
1059 /* For async targets, register a continuation to do any
1060 additional steps. For sync targets, the caller will handle
1061 further stepping. */
1062 if (target_can_async_p ())
1064 struct step_1_continuation_args
*args
;
1066 args
= xmalloc (sizeof (*args
));
1067 args
->skip_subroutines
= skip_subroutines
;
1068 args
->single_inst
= single_inst
;
1069 args
->count
= count
;
1070 args
->thread
= thread
;
1072 add_intermediate_continuation (tp
, step_1_continuation
, args
, xfree
);
1078 /* Continue program at specified address. */
1081 jump_command (char *arg
, int from_tty
)
1083 struct gdbarch
*gdbarch
= get_current_arch ();
1085 struct symtabs_and_lines sals
;
1086 struct symtab_and_line sal
;
1092 ensure_not_tfind_mode ();
1093 ensure_valid_thread ();
1094 ensure_not_running ();
1096 /* Find out whether we must run in the background. */
1098 async_exec
= strip_bg_char (&arg
);
1100 /* If we must run in the background, but the target can't do it,
1102 if (async_exec
&& !target_can_async_p ())
1103 error (_("Asynchronous execution not supported on this target."));
1106 error_no_arg (_("starting address"));
1108 sals
= decode_line_spec_1 (arg
, 1);
1109 if (sals
.nelts
!= 1)
1111 error (_("Unreasonable jump request"));
1117 if (sal
.symtab
== 0 && sal
.pc
== 0)
1118 error (_("No source file has been specified."));
1120 resolve_sal_pc (&sal
); /* May error out. */
1122 /* See if we are trying to jump to another function. */
1123 fn
= get_frame_function (get_current_frame ());
1124 sfn
= find_pc_function (sal
.pc
);
1125 if (fn
!= NULL
&& sfn
!= fn
)
1127 if (!query (_("Line %d is not in `%s'. Jump anyway? "), sal
.line
,
1128 SYMBOL_PRINT_NAME (fn
)))
1130 error (_("Not confirmed."));
1137 fixup_symbol_section (sfn
, 0);
1138 if (section_is_overlay (SYMBOL_OBJ_SECTION (sfn
)) &&
1139 !section_is_mapped (SYMBOL_OBJ_SECTION (sfn
)))
1141 if (!query (_("WARNING!!! Destination is in "
1142 "unmapped overlay! Jump anyway? ")))
1144 error (_("Not confirmed."));
1154 printf_filtered (_("Continuing at "));
1155 fputs_filtered (paddress (gdbarch
, addr
), gdb_stdout
);
1156 printf_filtered (".\n");
1159 /* If we are not asked to run in the bg, then prepare to run in the
1160 foreground, synchronously. */
1161 if (!async_exec
&& target_can_async_p ())
1163 /* Simulate synchronous execution. */
1164 async_disable_stdin ();
1167 clear_proceed_status ();
1168 proceed (addr
, TARGET_SIGNAL_0
, 0);
1172 /* Go to line or address in current procedure. */
1174 go_command (char *line_no
, int from_tty
)
1176 if (line_no
== (char *) NULL
|| !*line_no
)
1177 printf_filtered (_("Usage: go <location>\n"));
1180 tbreak_command (line_no
, from_tty
);
1181 jump_command (line_no
, from_tty
);
1186 /* Continue program giving it specified signal. */
1189 signal_command (char *signum_exp
, int from_tty
)
1191 enum target_signal oursig
;
1194 dont_repeat (); /* Too dangerous. */
1196 ensure_not_tfind_mode ();
1197 ensure_valid_thread ();
1198 ensure_not_running ();
1200 /* Find out whether we must run in the background. */
1201 if (signum_exp
!= NULL
)
1202 async_exec
= strip_bg_char (&signum_exp
);
1204 /* If we must run in the background, but the target can't do it,
1206 if (async_exec
&& !target_can_async_p ())
1207 error (_("Asynchronous execution not supported on this target."));
1209 /* If we are not asked to run in the bg, then prepare to run in the
1210 foreground, synchronously. */
1211 if (!async_exec
&& target_can_async_p ())
1213 /* Simulate synchronous execution. */
1214 async_disable_stdin ();
1218 error_no_arg (_("signal number"));
1220 /* It would be even slicker to make signal names be valid expressions,
1221 (the type could be "enum $signal" or some such), then the user could
1222 assign them to convenience variables. */
1223 oursig
= target_signal_from_name (signum_exp
);
1225 if (oursig
== TARGET_SIGNAL_UNKNOWN
)
1227 /* No, try numeric. */
1228 int num
= parse_and_eval_long (signum_exp
);
1231 oursig
= TARGET_SIGNAL_0
;
1233 oursig
= target_signal_from_command (num
);
1238 if (oursig
== TARGET_SIGNAL_0
)
1239 printf_filtered (_("Continuing with no signal.\n"));
1241 printf_filtered (_("Continuing with signal %s.\n"),
1242 target_signal_to_name (oursig
));
1245 clear_proceed_status ();
1246 proceed ((CORE_ADDR
) -1, oursig
, 0);
1249 /* A continuation callback for until_next_command. */
1252 until_next_continuation (void *arg
)
1254 struct thread_info
*tp
= arg
;
1256 delete_longjmp_breakpoint (tp
->num
);
1259 /* Proceed until we reach a different source line with pc greater than
1260 our current one or exit the function. We skip calls in both cases.
1262 Note that eventually this command should probably be changed so
1263 that only source lines are printed out when we hit the breakpoint
1264 we set. This may involve changes to wait_for_inferior and the
1265 proceed status code. */
1268 until_next_command (int from_tty
)
1270 struct frame_info
*frame
;
1272 struct symbol
*func
;
1273 struct symtab_and_line sal
;
1274 struct thread_info
*tp
= inferior_thread ();
1275 int thread
= tp
->num
;
1276 struct cleanup
*old_chain
;
1278 clear_proceed_status ();
1281 frame
= get_current_frame ();
1283 /* Step until either exited from this function or greater
1284 than the current line (if in symbolic section) or pc (if
1287 pc
= get_frame_pc (frame
);
1288 func
= find_pc_function (pc
);
1292 struct minimal_symbol
*msymbol
= lookup_minimal_symbol_by_pc (pc
);
1294 if (msymbol
== NULL
)
1295 error (_("Execution is not within a known function."));
1297 tp
->control
.step_range_start
= SYMBOL_VALUE_ADDRESS (msymbol
);
1298 tp
->control
.step_range_end
= pc
;
1302 sal
= find_pc_line (pc
, 0);
1304 tp
->control
.step_range_start
= BLOCK_START (SYMBOL_BLOCK_VALUE (func
));
1305 tp
->control
.step_range_end
= sal
.end
;
1308 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1310 tp
->step_multi
= 0; /* Only one call to proceed */
1312 set_longjmp_breakpoint (tp
, get_frame_id (frame
));
1313 old_chain
= make_cleanup (delete_longjmp_breakpoint_cleanup
, &thread
);
1315 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
1317 if (target_can_async_p () && is_running (inferior_ptid
))
1319 discard_cleanups (old_chain
);
1320 add_continuation (tp
, until_next_continuation
, tp
, NULL
);
1323 do_cleanups (old_chain
);
1327 until_command (char *arg
, int from_tty
)
1332 ensure_not_tfind_mode ();
1333 ensure_valid_thread ();
1334 ensure_not_running ();
1336 /* Find out whether we must run in the background. */
1338 async_exec
= strip_bg_char (&arg
);
1340 /* If we must run in the background, but the target can't do it,
1342 if (async_exec
&& !target_can_async_p ())
1343 error (_("Asynchronous execution not supported on this target."));
1345 /* If we are not asked to run in the bg, then prepare to run in the
1346 foreground, synchronously. */
1347 if (!async_exec
&& target_can_async_p ())
1349 /* Simulate synchronous execution. */
1350 async_disable_stdin ();
1354 until_break_command (arg
, from_tty
, 0);
1356 until_next_command (from_tty
);
1360 advance_command (char *arg
, int from_tty
)
1365 ensure_not_tfind_mode ();
1366 ensure_valid_thread ();
1367 ensure_not_running ();
1370 error_no_arg (_("a location"));
1372 /* Find out whether we must run in the background. */
1374 async_exec
= strip_bg_char (&arg
);
1376 /* If we must run in the background, but the target can't do it,
1378 if (async_exec
&& !target_can_async_p ())
1379 error (_("Asynchronous execution not supported on this target."));
1381 /* If we are not asked to run in the bg, then prepare to run in the
1382 foreground, synchronously. */
1383 if (!async_exec
&& target_can_async_p ())
1385 /* Simulate synchronous execution. */
1386 async_disable_stdin ();
1389 until_break_command (arg
, from_tty
, 1);
1392 /* Print the result of a function at the end of a 'finish' command. */
1395 print_return_value (struct type
*func_type
, struct type
*value_type
)
1397 struct gdbarch
*gdbarch
= get_regcache_arch (stop_registers
);
1398 struct cleanup
*old_chain
;
1399 struct ui_stream
*stb
;
1400 struct value
*value
;
1402 CHECK_TYPEDEF (value_type
);
1403 gdb_assert (TYPE_CODE (value_type
) != TYPE_CODE_VOID
);
1405 /* FIXME: 2003-09-27: When returning from a nested inferior function
1406 call, it's possible (with no help from the architecture vector)
1407 to locate and return/print a "struct return" value. This is just
1408 a more complicated case of what is already being done in the
1409 inferior function call code. In fact, when inferior function
1410 calls are made async, this will likely be made the norm. */
1412 switch (gdbarch_return_value (gdbarch
, func_type
, value_type
,
1415 case RETURN_VALUE_REGISTER_CONVENTION
:
1416 case RETURN_VALUE_ABI_RETURNS_ADDRESS
:
1417 case RETURN_VALUE_ABI_PRESERVES_ADDRESS
:
1418 value
= allocate_value (value_type
);
1419 gdbarch_return_value (gdbarch
, func_type
, value_type
, stop_registers
,
1420 value_contents_raw (value
), NULL
);
1422 case RETURN_VALUE_STRUCT_CONVENTION
:
1426 internal_error (__FILE__
, __LINE__
, _("bad switch"));
1431 struct value_print_options opts
;
1434 stb
= ui_out_stream_new (uiout
);
1435 old_chain
= make_cleanup_ui_out_stream_delete (stb
);
1436 ui_out_text (uiout
, "Value returned is ");
1437 ui_out_field_fmt (uiout
, "gdb-result-var", "$%d",
1438 record_latest_value (value
));
1439 ui_out_text (uiout
, " = ");
1440 get_raw_print_options (&opts
);
1441 value_print (value
, stb
->stream
, &opts
);
1442 ui_out_field_stream (uiout
, "return-value", stb
);
1443 ui_out_text (uiout
, "\n");
1444 do_cleanups (old_chain
);
1448 ui_out_text (uiout
, "Value returned has type: ");
1449 ui_out_field_string (uiout
, "return-type", TYPE_NAME (value_type
));
1450 ui_out_text (uiout
, ".");
1451 ui_out_text (uiout
, " Cannot determine contents\n");
1455 /* Stuff that needs to be done by the finish command after the target
1456 has stopped. In asynchronous mode, we wait for the target to stop
1457 in the call to poll or select in the event loop, so it is
1458 impossible to do all the stuff as part of the finish_command
1459 function itself. The only chance we have to complete this command
1460 is in fetch_inferior_event, which is called by the event loop as
1461 soon as it detects that the target has stopped. This function is
1462 called via the cmd_continuation pointer. */
1464 struct finish_command_continuation_args
1466 struct breakpoint
*breakpoint
;
1467 struct symbol
*function
;
1471 finish_command_continuation (void *arg
)
1473 struct finish_command_continuation_args
*a
= arg
;
1474 struct thread_info
*tp
= NULL
;
1477 if (!ptid_equal (inferior_ptid
, null_ptid
)
1478 && target_has_execution
1479 && is_stopped (inferior_ptid
))
1481 tp
= inferior_thread ();
1482 bs
= tp
->control
.stop_bpstat
;
1485 if (bpstat_find_breakpoint (bs
, a
->breakpoint
) != NULL
1486 && a
->function
!= NULL
)
1488 struct type
*value_type
;
1490 value_type
= TYPE_TARGET_TYPE (SYMBOL_TYPE (a
->function
));
1492 internal_error (__FILE__
, __LINE__
,
1493 _("finish_command: function has no target type"));
1495 if (TYPE_CODE (value_type
) != TYPE_CODE_VOID
)
1497 volatile struct gdb_exception ex
;
1499 TRY_CATCH (ex
, RETURN_MASK_ALL
)
1501 /* print_return_value can throw an exception in some
1502 circumstances. We need to catch this so that we still
1503 delete the breakpoint. */
1504 print_return_value (SYMBOL_TYPE (a
->function
), value_type
);
1507 exception_print (gdb_stdout
, ex
);
1511 /* We suppress normal call of normal_stop observer and do it here so
1512 that the *stopped notification includes the return value. */
1513 if (bs
!= NULL
&& tp
->control
.proceed_to_finish
)
1514 observer_notify_normal_stop (bs
, 1 /* print frame */);
1515 delete_breakpoint (a
->breakpoint
);
1516 delete_longjmp_breakpoint (inferior_thread ()->num
);
1520 finish_command_continuation_free_arg (void *arg
)
1525 /* finish_backward -- helper function for finish_command. */
1528 finish_backward (struct symbol
*function
)
1530 struct symtab_and_line sal
;
1531 struct thread_info
*tp
= inferior_thread ();
1533 CORE_ADDR func_addr
;
1535 pc
= get_frame_pc (get_current_frame ());
1537 if (find_pc_partial_function (pc
, NULL
, &func_addr
, NULL
) == 0)
1538 internal_error (__FILE__
, __LINE__
,
1539 _("Finish: couldn't find function."));
1541 sal
= find_pc_line (func_addr
, 0);
1543 tp
->control
.proceed_to_finish
= 1;
1544 /* Special case: if we're sitting at the function entry point,
1545 then all we need to do is take a reverse singlestep. We
1546 don't need to set a breakpoint, and indeed it would do us
1549 Note that this can only happen at frame #0, since there's
1550 no way that a function up the stack can have a return address
1551 that's equal to its entry point. */
1555 struct frame_info
*frame
= get_selected_frame (NULL
);
1556 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
1557 struct symtab_and_line sr_sal
;
1559 /* Set a step-resume at the function's entry point. Once that's
1560 hit, we'll do one more step backwards. */
1563 sr_sal
.pspace
= get_frame_program_space (frame
);
1564 insert_step_resume_breakpoint_at_sal (gdbarch
,
1565 sr_sal
, null_frame_id
);
1567 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
1571 /* We're almost there -- we just need to back up by one more
1573 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1574 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
1578 /* finish_forward -- helper function for finish_command. */
1581 finish_forward (struct symbol
*function
, struct frame_info
*frame
)
1583 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
1584 struct symtab_and_line sal
;
1585 struct thread_info
*tp
= inferior_thread ();
1586 struct breakpoint
*breakpoint
;
1587 struct cleanup
*old_chain
;
1588 struct finish_command_continuation_args
*cargs
;
1589 int thread
= tp
->num
;
1591 sal
= find_pc_line (get_frame_pc (frame
), 0);
1592 sal
.pc
= get_frame_pc (frame
);
1594 breakpoint
= set_momentary_breakpoint (gdbarch
, sal
,
1595 get_stack_frame_id (frame
),
1598 old_chain
= make_cleanup_delete_breakpoint (breakpoint
);
1600 set_longjmp_breakpoint (tp
, get_frame_id (frame
));
1601 make_cleanup (delete_longjmp_breakpoint_cleanup
, &thread
);
1603 /* We want stop_registers, please... */
1604 tp
->control
.proceed_to_finish
= 1;
1605 cargs
= xmalloc (sizeof (*cargs
));
1607 cargs
->breakpoint
= breakpoint
;
1608 cargs
->function
= function
;
1609 add_continuation (tp
, finish_command_continuation
, cargs
,
1610 finish_command_continuation_free_arg
);
1611 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
1613 discard_cleanups (old_chain
);
1614 if (!target_can_async_p ())
1615 do_all_continuations ();
1618 /* "finish": Set a temporary breakpoint at the place the selected
1619 frame will return to, then continue. */
1622 finish_command (char *arg
, int from_tty
)
1624 struct frame_info
*frame
;
1625 struct symbol
*function
;
1630 ensure_not_tfind_mode ();
1631 ensure_valid_thread ();
1632 ensure_not_running ();
1634 /* Find out whether we must run in the background. */
1636 async_exec
= strip_bg_char (&arg
);
1638 /* If we must run in the background, but the target can't do it,
1640 if (async_exec
&& !target_can_async_p ())
1641 error (_("Asynchronous execution not supported on this target."));
1643 /* If we are not asked to run in the bg, then prepare to run in the
1644 foreground, synchronously. */
1645 if (!async_exec
&& target_can_async_p ())
1647 /* Simulate synchronous execution. */
1648 async_disable_stdin ();
1652 error (_("The \"finish\" command does not take any arguments."));
1654 frame
= get_prev_frame (get_selected_frame (_("No selected frame.")));
1656 error (_("\"finish\" not meaningful in the outermost frame."));
1658 clear_proceed_status ();
1660 /* Finishing from an inline frame is completely different. We don't
1661 try to show the "return value" - no way to locate it. So we do
1662 not need a completion. */
1663 if (get_frame_type (get_selected_frame (_("No selected frame.")))
1666 /* Claim we are stepping in the calling frame. An empty step
1667 range means that we will stop once we aren't in a function
1668 called by that frame. We don't use the magic "1" value for
1669 step_range_end, because then infrun will think this is nexti,
1670 and not step over the rest of this inlined function call. */
1671 struct thread_info
*tp
= inferior_thread ();
1672 struct symtab_and_line empty_sal
;
1674 init_sal (&empty_sal
);
1675 set_step_info (frame
, empty_sal
);
1676 tp
->control
.step_range_start
= get_frame_pc (frame
);
1677 tp
->control
.step_range_end
= tp
->control
.step_range_start
;
1678 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1680 /* Print info on the selected frame, including level number but not
1684 printf_filtered (_("Run till exit from "));
1685 print_stack_frame (get_selected_frame (NULL
), 1, LOCATION
);
1688 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
1692 /* Find the function we will return from. */
1694 function
= find_pc_function (get_frame_pc (get_selected_frame (NULL
)));
1696 /* Print info on the selected frame, including level number but not
1700 if (execution_direction
== EXEC_REVERSE
)
1701 printf_filtered (_("Run back to call of "));
1703 printf_filtered (_("Run till exit from "));
1705 print_stack_frame (get_selected_frame (NULL
), 1, LOCATION
);
1708 if (execution_direction
== EXEC_REVERSE
)
1709 finish_backward (function
);
1711 finish_forward (function
, frame
);
1716 program_info (char *args
, int from_tty
)
1720 struct thread_info
*tp
;
1723 if (!target_has_execution
)
1725 printf_filtered (_("The program being debugged is not being run.\n"));
1730 ptid
= inferior_ptid
;
1733 struct target_waitstatus ws
;
1735 get_last_target_status (&ptid
, &ws
);
1738 if (ptid_equal (ptid
, null_ptid
) || is_exited (ptid
))
1739 error (_("Invalid selected thread."));
1740 else if (is_running (ptid
))
1741 error (_("Selected thread is running."));
1743 tp
= find_thread_ptid (ptid
);
1744 bs
= tp
->control
.stop_bpstat
;
1745 stat
= bpstat_num (&bs
, &num
);
1747 target_files_info ();
1748 printf_filtered (_("Program stopped at %s.\n"),
1749 paddress (target_gdbarch
, stop_pc
));
1750 if (tp
->control
.stop_step
)
1751 printf_filtered (_("It stopped after being stepped.\n"));
1754 /* There may be several breakpoints in the same place, so this
1755 isn't as strange as it seems. */
1760 printf_filtered (_("It stopped at a breakpoint "
1761 "that has since been deleted.\n"));
1764 printf_filtered (_("It stopped at breakpoint %d.\n"), num
);
1765 stat
= bpstat_num (&bs
, &num
);
1768 else if (tp
->suspend
.stop_signal
!= TARGET_SIGNAL_0
)
1770 printf_filtered (_("It stopped with signal %s, %s.\n"),
1771 target_signal_to_name (tp
->suspend
.stop_signal
),
1772 target_signal_to_string (tp
->suspend
.stop_signal
));
1777 printf_filtered (_("Type \"info stack\" or \"info "
1778 "registers\" for more information.\n"));
1783 environment_info (char *var
, int from_tty
)
1787 char *val
= get_in_environ (current_inferior ()->environment
, var
);
1791 puts_filtered (var
);
1792 puts_filtered (" = ");
1793 puts_filtered (val
);
1794 puts_filtered ("\n");
1798 puts_filtered ("Environment variable \"");
1799 puts_filtered (var
);
1800 puts_filtered ("\" not defined.\n");
1805 char **vector
= environ_vector (current_inferior ()->environment
);
1809 puts_filtered (*vector
++);
1810 puts_filtered ("\n");
1816 set_environment_command (char *arg
, int from_tty
)
1818 char *p
, *val
, *var
;
1822 error_no_arg (_("environment variable and value"));
1824 /* Find seperation between variable name and value. */
1825 p
= (char *) strchr (arg
, '=');
1826 val
= (char *) strchr (arg
, ' ');
1828 if (p
!= 0 && val
!= 0)
1830 /* We have both a space and an equals. If the space is before the
1831 equals, walk forward over the spaces til we see a nonspace
1832 (possibly the equals). */
1837 /* Now if the = is after the char following the spaces,
1838 take the char following the spaces. */
1842 else if (val
!= 0 && p
== 0)
1846 error_no_arg (_("environment variable to set"));
1848 if (p
== 0 || p
[1] == 0)
1852 p
= arg
+ strlen (arg
); /* So that savestring below will work. */
1856 /* Not setting variable value to null. */
1858 while (*val
== ' ' || *val
== '\t')
1862 while (p
!= arg
&& (p
[-1] == ' ' || p
[-1] == '\t'))
1865 var
= savestring (arg
, p
- arg
);
1868 printf_filtered (_("Setting environment variable "
1869 "\"%s\" to null value.\n"),
1871 set_in_environ (current_inferior ()->environment
, var
, "");
1874 set_in_environ (current_inferior ()->environment
, var
, val
);
1879 unset_environment_command (char *var
, int from_tty
)
1883 /* If there is no argument, delete all environment variables.
1884 Ask for confirmation if reading from the terminal. */
1885 if (!from_tty
|| query (_("Delete all environment variables? ")))
1887 free_environ (current_inferior ()->environment
);
1888 current_inferior ()->environment
= make_environ ();
1892 unset_in_environ (current_inferior ()->environment
, var
);
1895 /* Handle the execution path (PATH variable). */
1897 static const char path_var_name
[] = "PATH";
1900 path_info (char *args
, int from_tty
)
1902 puts_filtered ("Executable and object file path: ");
1903 puts_filtered (get_in_environ (current_inferior ()->environment
,
1905 puts_filtered ("\n");
1908 /* Add zero or more directories to the front of the execution path. */
1911 path_command (char *dirname
, int from_tty
)
1917 env
= get_in_environ (current_inferior ()->environment
, path_var_name
);
1918 /* Can be null if path is not set. */
1921 exec_path
= xstrdup (env
);
1922 mod_path (dirname
, &exec_path
);
1923 set_in_environ (current_inferior ()->environment
, path_var_name
, exec_path
);
1926 path_info ((char *) NULL
, from_tty
);
1930 /* Print out the machine register regnum. If regnum is -1, print all
1931 registers (print_all == 1) or all non-float and non-vector
1932 registers (print_all == 0).
1934 For most machines, having all_registers_info() print the
1935 register(s) one per line is good enough. If a different format is
1936 required, (eg, for MIPS or Pyramid 90x, which both have lots of
1937 regs), or there is an existing convention for showing all the
1938 registers, define the architecture method PRINT_REGISTERS_INFO to
1939 provide that format. */
1942 default_print_registers_info (struct gdbarch
*gdbarch
,
1943 struct ui_file
*file
,
1944 struct frame_info
*frame
,
1945 int regnum
, int print_all
)
1948 const int numregs
= gdbarch_num_regs (gdbarch
)
1949 + gdbarch_num_pseudo_regs (gdbarch
);
1951 for (i
= 0; i
< numregs
; i
++)
1953 struct type
*regtype
;
1956 /* Decide between printing all regs, non-float / vector regs, or
1962 if (!gdbarch_register_reggroup_p (gdbarch
, i
, all_reggroup
))
1967 if (!gdbarch_register_reggroup_p (gdbarch
, i
, general_reggroup
))
1977 /* If the register name is empty, it is undefined for this
1978 processor, so don't display anything. */
1979 if (gdbarch_register_name (gdbarch
, i
) == NULL
1980 || *(gdbarch_register_name (gdbarch
, i
)) == '\0')
1983 fputs_filtered (gdbarch_register_name (gdbarch
, i
), file
);
1984 print_spaces_filtered (15 - strlen (gdbarch_register_name
1985 (gdbarch
, i
)), file
);
1987 regtype
= register_type (gdbarch
, i
);
1988 val
= allocate_value (regtype
);
1990 /* Get the data in raw format. */
1991 if (! frame_register_read (frame
, i
, value_contents_raw (val
)))
1993 fprintf_filtered (file
, "*value not available*\n");
1997 /* If virtual format is floating, print it that way, and in raw
1999 if (TYPE_CODE (regtype
) == TYPE_CODE_FLT
2000 || TYPE_CODE (regtype
) == TYPE_CODE_DECFLOAT
)
2003 struct value_print_options opts
;
2004 const gdb_byte
*valaddr
= value_contents_for_printing (val
);
2006 get_user_print_options (&opts
);
2010 value_contents_for_printing (val
),
2011 value_embedded_offset (val
), 0,
2012 file
, 0, val
, &opts
, current_language
);
2014 fprintf_filtered (file
, "\t(raw 0x");
2015 for (j
= 0; j
< register_size (gdbarch
, i
); j
++)
2019 if (gdbarch_byte_order (gdbarch
) == BFD_ENDIAN_BIG
)
2022 idx
= register_size (gdbarch
, i
) - 1 - j
;
2023 fprintf_filtered (file
, "%02x", (unsigned char) valaddr
[idx
]);
2025 fprintf_filtered (file
, ")");
2029 struct value_print_options opts
;
2031 /* Print the register in hex. */
2032 get_formatted_print_options (&opts
, 'x');
2035 value_contents_for_printing (val
),
2036 value_embedded_offset (val
), 0,
2037 file
, 0, val
, &opts
, current_language
);
2038 /* If not a vector register, print it also according to its
2040 if (TYPE_VECTOR (regtype
) == 0)
2042 get_user_print_options (&opts
);
2044 fprintf_filtered (file
, "\t");
2046 value_contents_for_printing (val
),
2047 value_embedded_offset (val
), 0,
2048 file
, 0, val
, &opts
, current_language
);
2052 fprintf_filtered (file
, "\n");
2057 registers_info (char *addr_exp
, int fpregs
)
2059 struct frame_info
*frame
;
2060 struct gdbarch
*gdbarch
;
2062 if (!target_has_registers
)
2063 error (_("The program has no registers now."));
2064 frame
= get_selected_frame (NULL
);
2065 gdbarch
= get_frame_arch (frame
);
2069 gdbarch_print_registers_info (gdbarch
, gdb_stdout
,
2074 while (*addr_exp
!= '\0')
2079 /* Keep skipping leading white space. */
2080 if (isspace ((*addr_exp
)))
2086 /* Discard any leading ``$''. Check that there is something
2087 resembling a register following it. */
2088 if (addr_exp
[0] == '$')
2090 if (isspace ((*addr_exp
)) || (*addr_exp
) == '\0')
2091 error (_("Missing register name"));
2093 /* Find the start/end of this register name/num/group. */
2095 while ((*addr_exp
) != '\0' && !isspace ((*addr_exp
)))
2099 /* Figure out what we've found and display it. */
2101 /* A register name? */
2103 int regnum
= user_reg_map_name_to_regnum (gdbarch
, start
, end
- start
);
2107 /* User registers lie completely outside of the range of
2108 normal registers. Catch them early so that the target
2110 if (regnum
>= gdbarch_num_regs (gdbarch
)
2111 + gdbarch_num_pseudo_regs (gdbarch
))
2113 struct value_print_options opts
;
2114 struct value
*val
= value_of_user_reg (regnum
, frame
);
2116 printf_filtered ("%s: ", start
);
2117 get_formatted_print_options (&opts
, 'x');
2118 val_print_scalar_formatted (check_typedef (value_type (val
)),
2119 value_contents_for_printing (val
),
2120 value_embedded_offset (val
),
2122 &opts
, 0, gdb_stdout
);
2123 printf_filtered ("\n");
2126 gdbarch_print_registers_info (gdbarch
, gdb_stdout
,
2127 frame
, regnum
, fpregs
);
2132 /* A register group? */
2134 struct reggroup
*group
;
2136 for (group
= reggroup_next (gdbarch
, NULL
);
2138 group
= reggroup_next (gdbarch
, group
))
2140 /* Don't bother with a length check. Should the user
2141 enter a short register group name, go with the first
2142 group that matches. */
2143 if (strncmp (start
, reggroup_name (group
), end
- start
) == 0)
2151 regnum
< gdbarch_num_regs (gdbarch
)
2152 + gdbarch_num_pseudo_regs (gdbarch
);
2155 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, group
))
2156 gdbarch_print_registers_info (gdbarch
,
2164 /* Nothing matched. */
2165 error (_("Invalid register `%.*s'"), (int) (end
- start
), start
);
2170 all_registers_info (char *addr_exp
, int from_tty
)
2172 registers_info (addr_exp
, 1);
2176 nofp_registers_info (char *addr_exp
, int from_tty
)
2178 registers_info (addr_exp
, 0);
2182 print_vector_info (struct ui_file
*file
,
2183 struct frame_info
*frame
, const char *args
)
2185 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
2187 if (gdbarch_print_vector_info_p (gdbarch
))
2188 gdbarch_print_vector_info (gdbarch
, file
, frame
, args
);
2192 int printed_something
= 0;
2195 regnum
< gdbarch_num_regs (gdbarch
)
2196 + gdbarch_num_pseudo_regs (gdbarch
);
2199 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, vector_reggroup
))
2201 printed_something
= 1;
2202 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
2205 if (!printed_something
)
2206 fprintf_filtered (file
, "No vector information\n");
2211 vector_info (char *args
, int from_tty
)
2213 if (!target_has_registers
)
2214 error (_("The program has no registers now."));
2216 print_vector_info (gdb_stdout
, get_selected_frame (NULL
), args
);
2219 /* Kill the inferior process. Make us have no inferior. */
2222 kill_command (char *arg
, int from_tty
)
2224 /* FIXME: This should not really be inferior_ptid (or target_has_execution).
2225 It should be a distinct flag that indicates that a target is active, cuz
2226 some targets don't have processes! */
2228 if (ptid_equal (inferior_ptid
, null_ptid
))
2229 error (_("The program is not being run."));
2230 if (!query (_("Kill the program being debugged? ")))
2231 error (_("Not confirmed."));
2234 /* If we still have other inferiors to debug, then don't mess with
2235 with their threads. */
2236 if (!have_inferiors ())
2238 init_thread_list (); /* Destroy thread info. */
2240 /* Killing off the inferior can leave us with a core file. If
2241 so, print the state we are left in. */
2242 if (target_has_stack
)
2244 printf_filtered (_("In %s,\n"), target_longname
);
2245 print_stack_frame (get_selected_frame (NULL
), 1, SRC_AND_LOC
);
2248 bfd_cache_close_all ();
2251 /* Used in `attach&' command. ARG is a point to an integer
2252 representing a process id. Proceed threads of this process iff
2253 they stopped due to debugger request, and when they did, they
2254 reported a clean stop (TARGET_SIGNAL_0). Do not proceed threads
2255 that have been explicitly been told to stop. */
2258 proceed_after_attach_callback (struct thread_info
*thread
,
2261 int pid
= * (int *) arg
;
2263 if (ptid_get_pid (thread
->ptid
) == pid
2264 && !is_exited (thread
->ptid
)
2265 && !is_executing (thread
->ptid
)
2266 && !thread
->stop_requested
2267 && thread
->suspend
.stop_signal
== TARGET_SIGNAL_0
)
2269 switch_to_thread (thread
->ptid
);
2270 clear_proceed_status ();
2271 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
2278 proceed_after_attach (int pid
)
2280 /* Don't error out if the current thread is running, because
2281 there may be other stopped threads. */
2282 struct cleanup
*old_chain
;
2284 /* Backup current thread and selected frame. */
2285 old_chain
= make_cleanup_restore_current_thread ();
2287 iterate_over_threads (proceed_after_attach_callback
, &pid
);
2289 /* Restore selected ptid. */
2290 do_cleanups (old_chain
);
2295 * Should save/restore the tty state since it might be that the
2296 * program to be debugged was started on this tty and it wants
2297 * the tty in some state other than what we want. If it's running
2298 * on another terminal or without a terminal, then saving and
2299 * restoring the tty state is a harmless no-op.
2300 * This only needs to be done if we are attaching to a process.
2303 /* attach_command --
2304 takes a program started up outside of gdb and ``attaches'' to it.
2305 This stops it cold in its tracks and allows us to start debugging it.
2306 and wait for the trace-trap that results from attaching. */
2309 attach_command_post_wait (char *args
, int from_tty
, int async_exec
)
2312 char *full_exec_path
= NULL
;
2313 struct inferior
*inferior
;
2315 inferior
= current_inferior ();
2316 inferior
->control
.stop_soon
= NO_STOP_QUIETLY
;
2318 /* If no exec file is yet known, try to determine it from the
2320 exec_file
= (char *) get_exec_file (0);
2323 exec_file
= target_pid_to_exec_file (PIDGET (inferior_ptid
));
2326 /* It's possible we don't have a full path, but rather just a
2327 filename. Some targets, such as HP-UX, don't provide the
2330 Attempt to qualify the filename against the source path.
2331 (If that fails, we'll just fall back on the original
2332 filename. Not much more we can do...) */
2334 if (!source_full_path_of (exec_file
, &full_exec_path
))
2335 full_exec_path
= xstrdup (exec_file
);
2337 exec_file_attach (full_exec_path
, from_tty
);
2338 symbol_file_add_main (full_exec_path
, from_tty
);
2343 reopen_exec_file ();
2347 /* Take any necessary post-attaching actions for this platform. */
2348 target_post_attach (PIDGET (inferior_ptid
));
2350 post_create_inferior (¤t_target
, from_tty
);
2352 /* Install inferior's terminal modes. */
2353 target_terminal_inferior ();
2357 /* The user requested an `attach&', so be sure to leave threads
2358 that didn't get a signal running. */
2360 /* Immediatelly resume all suspended threads of this inferior,
2361 and this inferior only. This should have no effect on
2362 already running threads. If a thread has been stopped with a
2363 signal, leave it be. */
2365 proceed_after_attach (inferior
->pid
);
2368 if (inferior_thread ()->suspend
.stop_signal
== TARGET_SIGNAL_0
)
2370 clear_proceed_status ();
2371 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
2377 /* The user requested a plain `attach', so be sure to leave
2378 the inferior stopped. */
2380 if (target_can_async_p ())
2381 async_enable_stdin ();
2383 /* At least the current thread is already stopped. */
2385 /* In all-stop, by definition, all threads have to be already
2386 stopped at this point. In non-stop, however, although the
2387 selected thread is stopped, others may still be executing.
2388 Be sure to explicitly stop all threads of the process. This
2389 should have no effect on already stopped threads. */
2391 target_stop (pid_to_ptid (inferior
->pid
));
2393 /* Tell the user/frontend where we're stopped. */
2395 if (deprecated_attach_hook
)
2396 deprecated_attach_hook ();
2400 struct attach_command_continuation_args
2408 attach_command_continuation (void *args
)
2410 struct attach_command_continuation_args
*a
= args
;
2412 attach_command_post_wait (a
->args
, a
->from_tty
, a
->async_exec
);
2416 attach_command_continuation_free_args (void *args
)
2418 struct attach_command_continuation_args
*a
= args
;
2425 attach_command (char *args
, int from_tty
)
2428 struct cleanup
*back_to
= make_cleanup (null_cleanup
, NULL
);
2430 dont_repeat (); /* Not for the faint of heart */
2432 if (gdbarch_has_global_solist (target_gdbarch
))
2433 /* Don't complain if all processes share the same symbol
2436 else if (target_has_execution
)
2438 if (query (_("A program is being debugged already. Kill it? ")))
2441 error (_("Not killed."));
2444 /* Clean up any leftovers from other runs. Some other things from
2445 this function should probably be moved into target_pre_inferior. */
2446 target_pre_inferior (from_tty
);
2448 if (non_stop
&& !target_supports_non_stop ())
2449 error (_("Cannot attach to this target in non-stop mode"));
2453 async_exec
= strip_bg_char (&args
);
2455 /* If we get a request for running in the bg but the target
2456 doesn't support it, error out. */
2457 if (async_exec
&& !target_can_async_p ())
2458 error (_("Asynchronous execution not supported on this target."));
2461 /* If we don't get a request of running in the bg, then we need
2462 to simulate synchronous (fg) execution. */
2463 if (!async_exec
&& target_can_async_p ())
2465 /* Simulate synchronous execution. */
2466 async_disable_stdin ();
2467 make_cleanup ((make_cleanup_ftype
*)async_enable_stdin
, NULL
);
2470 target_attach (args
, from_tty
);
2472 /* Set up the "saved terminal modes" of the inferior
2473 based on what modes we are starting it with. */
2474 target_terminal_init ();
2476 /* Set up execution context to know that we should return from
2477 wait_for_inferior as soon as the target reports a stop. */
2478 init_wait_for_inferior ();
2479 clear_proceed_status ();
2483 /* If we find that the current thread isn't stopped, explicitly
2484 do so now, because we're going to install breakpoints and
2488 /* The user requested an `attach&'; stop just one thread. */
2489 target_stop (inferior_ptid
);
2491 /* The user requested an `attach', so stop all threads of this
2493 target_stop (pid_to_ptid (ptid_get_pid (inferior_ptid
)));
2496 /* Some system don't generate traps when attaching to inferior.
2497 E.g. Mach 3 or GNU hurd. */
2498 if (!target_attach_no_wait
)
2500 struct inferior
*inferior
= current_inferior ();
2502 /* Careful here. See comments in inferior.h. Basically some
2503 OSes don't ignore SIGSTOPs on continue requests anymore. We
2504 need a way for handle_inferior_event to reset the stop_signal
2505 variable after an attach, and this is what
2506 STOP_QUIETLY_NO_SIGSTOP is for. */
2507 inferior
->control
.stop_soon
= STOP_QUIETLY_NO_SIGSTOP
;
2509 if (target_can_async_p ())
2511 /* sync_execution mode. Wait for stop. */
2512 struct attach_command_continuation_args
*a
;
2514 a
= xmalloc (sizeof (*a
));
2515 a
->args
= xstrdup (args
);
2516 a
->from_tty
= from_tty
;
2517 a
->async_exec
= async_exec
;
2518 add_inferior_continuation (attach_command_continuation
, a
,
2519 attach_command_continuation_free_args
);
2520 discard_cleanups (back_to
);
2524 wait_for_inferior ();
2527 attach_command_post_wait (args
, from_tty
, async_exec
);
2528 discard_cleanups (back_to
);
2531 /* We had just found out that the target was already attached to an
2532 inferior. PTID points at a thread of this new inferior, that is
2533 the most likely to be stopped right now, but not necessarily so.
2534 The new inferior is assumed to be already added to the inferior
2535 list at this point. If LEAVE_RUNNING, then leave the threads of
2536 this inferior running, except those we've explicitly seen reported
2540 notice_new_inferior (ptid_t ptid
, int leave_running
, int from_tty
)
2542 struct cleanup
* old_chain
;
2545 old_chain
= make_cleanup (null_cleanup
, NULL
);
2547 /* If in non-stop, leave threads as running as they were. If
2548 they're stopped for some reason other than us telling it to, the
2549 target reports a signal != TARGET_SIGNAL_0. We don't try to
2550 resume threads with such a stop signal. */
2551 async_exec
= non_stop
;
2553 if (!ptid_equal (inferior_ptid
, null_ptid
))
2554 make_cleanup_restore_current_thread ();
2556 switch_to_thread (ptid
);
2558 /* When we "notice" a new inferior we need to do all the things we
2559 would normally do if we had just attached to it. */
2561 if (is_executing (inferior_ptid
))
2563 struct inferior
*inferior
= current_inferior ();
2565 /* We're going to install breakpoints, and poke at memory,
2566 ensure that the inferior is stopped for a moment while we do
2568 target_stop (inferior_ptid
);
2570 inferior
->control
.stop_soon
= STOP_QUIETLY_REMOTE
;
2572 /* Wait for stop before proceeding. */
2573 if (target_can_async_p ())
2575 struct attach_command_continuation_args
*a
;
2577 a
= xmalloc (sizeof (*a
));
2578 a
->args
= xstrdup ("");
2579 a
->from_tty
= from_tty
;
2580 a
->async_exec
= async_exec
;
2581 add_inferior_continuation (attach_command_continuation
, a
,
2582 attach_command_continuation_free_args
);
2584 do_cleanups (old_chain
);
2588 wait_for_inferior ();
2591 async_exec
= leave_running
;
2592 attach_command_post_wait ("" /* args */, from_tty
, async_exec
);
2594 do_cleanups (old_chain
);
2599 * takes a program previously attached to and detaches it.
2600 * The program resumes execution and will no longer stop
2601 * on signals, etc. We better not have left any breakpoints
2602 * in the program or it'll die when it hits one. For this
2603 * to work, it may be necessary for the process to have been
2604 * previously attached. It *might* work if the program was
2605 * started via the normal ptrace (PTRACE_TRACEME).
2609 detach_command (char *args
, int from_tty
)
2611 dont_repeat (); /* Not for the faint of heart. */
2613 if (ptid_equal (inferior_ptid
, null_ptid
))
2614 error (_("The program is not being run."));
2616 disconnect_tracing (from_tty
);
2618 target_detach (args
, from_tty
);
2620 /* If the solist is global across inferiors, don't clear it when we
2621 detach from a single inferior. */
2622 if (!gdbarch_has_global_solist (target_gdbarch
))
2623 no_shared_libraries (NULL
, from_tty
);
2625 /* If we still have inferiors to debug, then don't mess with their
2627 if (!have_inferiors ())
2628 init_thread_list ();
2630 if (deprecated_detach_hook
)
2631 deprecated_detach_hook ();
2634 /* Disconnect from the current target without resuming it (leaving it
2635 waiting for a debugger).
2637 We'd better not have left any breakpoints in the program or the
2638 next debugger will get confused. Currently only supported for some
2639 remote targets, since the normal attach mechanisms don't work on
2640 stopped processes on some native platforms (e.g. GNU/Linux). */
2643 disconnect_command (char *args
, int from_tty
)
2645 dont_repeat (); /* Not for the faint of heart. */
2646 target_disconnect (args
, from_tty
);
2647 no_shared_libraries (NULL
, from_tty
);
2648 init_thread_list ();
2649 if (deprecated_detach_hook
)
2650 deprecated_detach_hook ();
2654 interrupt_target_1 (int all_threads
)
2659 ptid
= minus_one_ptid
;
2661 ptid
= inferior_ptid
;
2664 /* Tag the thread as having been explicitly requested to stop, so
2665 other parts of gdb know not to resume this thread automatically,
2666 if it was stopped due to an internal event. Limit this to
2667 non-stop mode, as when debugging a multi-threaded application in
2668 all-stop mode, we will only get one stop event --- it's undefined
2669 which thread will report the event. */
2671 set_stop_requested (ptid
, 1);
2674 /* Stop the execution of the target while running in async mode, in
2675 the backgound. In all-stop, stop the whole process. In non-stop
2676 mode, stop the current thread only by default, or stop all threads
2677 if the `-a' switch is used. */
2679 /* interrupt [-a] */
2681 interrupt_target_command (char *args
, int from_tty
)
2683 if (target_can_async_p ())
2685 int all_threads
= 0;
2687 dont_repeat (); /* Not for the faint of heart. */
2690 && strncmp (args
, "-a", sizeof ("-a") - 1) == 0)
2693 if (!non_stop
&& all_threads
)
2694 error (_("-a is meaningless in all-stop mode."));
2696 interrupt_target_1 (all_threads
);
2701 print_float_info (struct ui_file
*file
,
2702 struct frame_info
*frame
, const char *args
)
2704 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
2706 if (gdbarch_print_float_info_p (gdbarch
))
2707 gdbarch_print_float_info (gdbarch
, file
, frame
, args
);
2711 int printed_something
= 0;
2714 regnum
< gdbarch_num_regs (gdbarch
)
2715 + gdbarch_num_pseudo_regs (gdbarch
);
2718 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, float_reggroup
))
2720 printed_something
= 1;
2721 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
2724 if (!printed_something
)
2725 fprintf_filtered (file
, "No floating-point info "
2726 "available for this processor.\n");
2731 float_info (char *args
, int from_tty
)
2733 if (!target_has_registers
)
2734 error (_("The program has no registers now."));
2736 print_float_info (gdb_stdout
, get_selected_frame (NULL
), args
);
2740 unset_command (char *args
, int from_tty
)
2742 printf_filtered (_("\"unset\" must be followed by the "
2743 "name of an unset subcommand.\n"));
2744 help_list (unsetlist
, "unset ", -1, gdb_stdout
);
2748 _initialize_infcmd (void)
2750 struct cmd_list_element
*c
= NULL
;
2752 /* Add the filename of the terminal connected to inferior I/O. */
2753 add_setshow_filename_cmd ("inferior-tty", class_run
,
2754 &inferior_io_terminal_scratch
, _("\
2755 Set terminal for future runs of program being debugged."), _("\
2756 Show terminal for future runs of program being debugged."), _("\
2757 Usage: set inferior-tty /dev/pts/1"),
2758 set_inferior_tty_command
,
2759 show_inferior_tty_command
,
2760 &setlist
, &showlist
);
2761 add_com_alias ("tty", "set inferior-tty", class_alias
, 0);
2763 add_setshow_optional_filename_cmd ("args", class_run
,
2764 &inferior_args_scratch
, _("\
2765 Set argument list to give program being debugged when it is started."), _("\
2766 Show argument list to give program being debugged when it is started."), _("\
2767 Follow this command with any number of args, to be passed to the program."),
2770 &setlist
, &showlist
);
2772 c
= add_cmd ("environment", no_class
, environment_info
, _("\
2773 The environment to give the program, or one variable's value.\n\
2774 With an argument VAR, prints the value of environment variable VAR to\n\
2775 give the program being debugged. With no arguments, prints the entire\n\
2776 environment to be given to the program."), &showlist
);
2777 set_cmd_completer (c
, noop_completer
);
2779 add_prefix_cmd ("unset", no_class
, unset_command
,
2780 _("Complement to certain \"set\" commands."),
2781 &unsetlist
, "unset ", 0, &cmdlist
);
2783 c
= add_cmd ("environment", class_run
, unset_environment_command
, _("\
2784 Cancel environment variable VAR for the program.\n\
2785 This does not affect the program until the next \"run\" command."),
2787 set_cmd_completer (c
, noop_completer
);
2789 c
= add_cmd ("environment", class_run
, set_environment_command
, _("\
2790 Set environment variable value to give the program.\n\
2791 Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\
2792 VALUES of environment variables are uninterpreted strings.\n\
2793 This does not affect the program until the next \"run\" command."),
2795 set_cmd_completer (c
, noop_completer
);
2797 c
= add_com ("path", class_files
, path_command
, _("\
2798 Add directory DIR(s) to beginning of search path for object files.\n\
2799 $cwd in the path means the current working directory.\n\
2800 This path is equivalent to the $PATH shell variable. It is a list of\n\
2801 directories, separated by colons. These directories are searched to find\n\
2802 fully linked executable files and separately compiled object files as \
2804 set_cmd_completer (c
, filename_completer
);
2806 c
= add_cmd ("paths", no_class
, path_info
, _("\
2807 Current search path for finding object files.\n\
2808 $cwd in the path means the current working directory.\n\
2809 This path is equivalent to the $PATH shell variable. It is a list of\n\
2810 directories, separated by colons. These directories are searched to find\n\
2811 fully linked executable files and separately compiled object files as \
2814 set_cmd_completer (c
, noop_completer
);
2816 add_prefix_cmd ("kill", class_run
, kill_command
,
2817 _("Kill execution of program being debugged."),
2818 &killlist
, "kill ", 0, &cmdlist
);
2820 add_com ("attach", class_run
, attach_command
, _("\
2821 Attach to a process or file outside of GDB.\n\
2822 This command attaches to another target, of the same type as your last\n\
2823 \"target\" command (\"info files\" will show your target stack).\n\
2824 The command may take as argument a process id or a device file.\n\
2825 For a process id, you must have permission to send the process a signal,\n\
2826 and it must have the same effective uid as the debugger.\n\
2827 When using \"attach\" with a process id, the debugger finds the\n\
2828 program running in the process, looking first in the current working\n\
2829 directory, or (if not found there) using the source file search path\n\
2830 (see the \"directory\" command). You can also use the \"file\" command\n\
2831 to specify the program, and to load its symbol table."));
2833 add_prefix_cmd ("detach", class_run
, detach_command
, _("\
2834 Detach a process or file previously attached.\n\
2835 If a process, it is no longer traced, and it continues its execution. If\n\
2836 you were debugging a file, the file is closed and gdb no longer accesses it."),
2837 &detachlist
, "detach ", 0, &cmdlist
);
2839 add_com ("disconnect", class_run
, disconnect_command
, _("\
2840 Disconnect from a target.\n\
2841 The target will wait for another debugger to connect. Not available for\n\
2844 add_com ("signal", class_run
, signal_command
, _("\
2845 Continue program giving it signal specified by the argument.\n\
2846 An argument of \"0\" means continue program without giving it a signal."));
2848 add_com ("stepi", class_run
, stepi_command
, _("\
2849 Step one instruction exactly.\n\
2850 Argument N means do this N times (or till program stops for another \
2852 add_com_alias ("si", "stepi", class_alias
, 0);
2854 add_com ("nexti", class_run
, nexti_command
, _("\
2855 Step one instruction, but proceed through subroutine calls.\n\
2856 Argument N means do this N times (or till program stops for another \
2858 add_com_alias ("ni", "nexti", class_alias
, 0);
2860 add_com ("finish", class_run
, finish_command
, _("\
2861 Execute until selected stack frame returns.\n\
2862 Upon return, the value returned is printed and put in the value history."));
2863 add_com_alias ("fin", "finish", class_run
, 1);
2865 add_com ("next", class_run
, next_command
, _("\
2866 Step program, proceeding through subroutine calls.\n\
2867 Like the \"step\" command as long as subroutine calls do not happen;\n\
2868 when they do, the call is treated as one instruction.\n\
2869 Argument N means do this N times (or till program stops for another \
2871 add_com_alias ("n", "next", class_run
, 1);
2873 add_com_alias ("S", "next", class_run
, 1);
2875 add_com ("step", class_run
, step_command
, _("\
2876 Step program until it reaches a different source line.\n\
2877 Argument N means do this N times (or till program stops for another \
2879 add_com_alias ("s", "step", class_run
, 1);
2881 c
= add_com ("until", class_run
, until_command
, _("\
2882 Execute until the program reaches a source line greater than the current\n\
2883 or a specified location (same args as break command) within the current \
2885 set_cmd_completer (c
, location_completer
);
2886 add_com_alias ("u", "until", class_run
, 1);
2888 c
= add_com ("advance", class_run
, advance_command
, _("\
2889 Continue the program up to the given location (same form as args for break \
2891 Execution will also stop upon exit from the current stack frame."));
2892 set_cmd_completer (c
, location_completer
);
2894 c
= add_com ("jump", class_run
, jump_command
, _("\
2895 Continue program being debugged at specified line or address.\n\
2896 Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\
2897 for an address to start at."));
2898 set_cmd_completer (c
, location_completer
);
2902 c
= add_com ("go", class_run
, go_command
, _("\
2903 Usage: go <location>\n\
2904 Continue program being debugged, stopping at specified line or \n\
2906 Give as argument either LINENUM or *ADDR, where ADDR is an \n\
2907 expression for an address to start at.\n\
2908 This command is a combination of tbreak and jump."));
2909 set_cmd_completer (c
, location_completer
);
2913 add_com_alias ("g", "go", class_run
, 1);
2915 add_com ("continue", class_run
, continue_command
, _("\
2916 Continue program being debugged, after signal or breakpoint.\n\
2917 If proceeding from breakpoint, a number N may be used as an argument,\n\
2918 which means to set the ignore count of that breakpoint to N - 1 (so that\n\
2919 the breakpoint won't break until the Nth time it is reached).\n\
2921 If non-stop mode is enabled, continue only the current thread,\n\
2922 otherwise all the threads in the program are continued. To \n\
2923 continue all stopped threads in non-stop mode, use the -a option.\n\
2924 Specifying -a and an ignore count simultaneously is an error."));
2925 add_com_alias ("c", "cont", class_run
, 1);
2926 add_com_alias ("fg", "cont", class_run
, 1);
2928 c
= add_com ("run", class_run
, run_command
, _("\
2929 Start debugged program. You may specify arguments to give it.\n\
2930 Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\
2931 Input and output redirection with \">\", \"<\", or \">>\" are also \
2933 With no arguments, uses arguments last specified (with \"run\" \
2934 or \"set args\").\n\
2935 To cancel previous arguments and run with no arguments,\n\
2936 use \"set args\" without arguments."));
2937 set_cmd_completer (c
, filename_completer
);
2938 add_com_alias ("r", "run", class_run
, 1);
2940 add_com ("R", class_run
, run_no_args_command
,
2941 _("Start debugged program with no arguments."));
2943 c
= add_com ("start", class_run
, start_command
, _("\
2944 Run the debugged program until the beginning of the main procedure.\n\
2945 You may specify arguments to give to your program, just as with the\n\
2946 \"run\" command."));
2947 set_cmd_completer (c
, filename_completer
);
2949 add_com ("interrupt", class_run
, interrupt_target_command
,
2950 _("Interrupt the execution of the debugged program.\n\
2951 If non-stop mode is enabled, interrupt only the current thread,\n\
2952 otherwise all the threads in the program are stopped. To \n\
2953 interrupt all running threads in non-stop mode, use the -a option."));
2955 add_info ("registers", nofp_registers_info
, _("\
2956 List of integer registers and their contents, for selected stack frame.\n\
2957 Register name as argument means describe only that register."));
2958 add_info_alias ("r", "registers", 1);
2961 add_com ("lr", class_info
, nofp_registers_info
, _("\
2962 List of integer registers and their contents, for selected stack frame.\n\
2963 Register name as argument means describe only that register."));
2964 add_info ("all-registers", all_registers_info
, _("\
2965 List of all registers and their contents, for selected stack frame.\n\
2966 Register name as argument means describe only that register."));
2968 add_info ("program", program_info
,
2969 _("Execution status of the program."));
2971 add_info ("float", float_info
,
2972 _("Print the status of the floating point unit\n"));
2974 add_info ("vector", vector_info
,
2975 _("Print the status of the vector unit\n"));