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 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 /* Functions exported for general use, in inferior.h: */
61 void all_registers_info (char *, int);
63 void registers_info (char *, int);
65 void nexti_command (char *, int);
67 void stepi_command (char *, int);
69 void continue_command (char *, int);
71 void interrupt_target_command (char *args
, int from_tty
);
73 /* Local functions: */
75 static void nofp_registers_info (char *, int);
77 static void print_return_value (struct type
*func_type
,
78 struct type
*value_type
);
80 static void until_next_command (int);
82 static void until_command (char *, int);
84 static void path_info (char *, int);
86 static void path_command (char *, int);
88 static void unset_command (char *, int);
90 static void float_info (char *, int);
92 static void disconnect_command (char *, int);
94 static void unset_environment_command (char *, int);
96 static void set_environment_command (char *, int);
98 static void environment_info (char *, int);
100 static void program_info (char *, int);
102 static void finish_command (char *, int);
104 static void signal_command (char *, int);
106 static void jump_command (char *, int);
108 static void step_1 (int, int, char *);
109 static void step_once (int skip_subroutines
, int single_inst
, int count
, int thread
);
111 static void next_command (char *, int);
113 static void step_command (char *, int);
115 static void run_command (char *, int);
117 static void run_no_args_command (char *args
, int from_tty
);
119 static void go_command (char *line_no
, int from_tty
);
121 static int strip_bg_char (char **);
123 void _initialize_infcmd (void);
125 #define ERROR_NO_INFERIOR \
126 if (!target_has_execution) error (_("The program is not being run."));
128 /* Scratch area where string containing arguments to give to the program will be
129 stored by 'set args'. As soon as anything is stored, notice_args_set will
130 move it into per-inferior storage. Arguments are separated by spaces. Empty
131 string (pointer to '\0') means no args. */
133 static char *inferior_args_scratch
;
135 /* Scratch area where 'set inferior-tty' will store user-provided value.
136 We'll immediate copy it into per-inferior storage. */
138 static char *inferior_io_terminal_scratch
;
140 /* Pid of our debugged inferior, or 0 if no inferior now.
141 Since various parts of infrun.c test this to see whether there is a program
142 being debugged it should be nonzero (currently 3 is used) for remote
145 ptid_t inferior_ptid
;
147 /* Address at which inferior stopped. */
151 /* Flag indicating that a command has proceeded the inferior past the
152 current breakpoint. */
154 int breakpoint_proceeded
;
156 /* Nonzero if stopped due to completion of a stack dummy routine. */
158 enum stop_stack_kind stop_stack_dummy
;
160 /* Nonzero if stopped due to a random (unexpected) signal in inferior
163 int stopped_by_random_signal
;
166 /* Accessor routines. */
168 /* Set the io terminal for the current inferior. Ownership of
169 TERMINAL_NAME is not transferred. */
172 set_inferior_io_terminal (const char *terminal_name
)
174 xfree (current_inferior ()->terminal
);
175 current_inferior ()->terminal
= terminal_name
? xstrdup (terminal_name
) : 0;
179 get_inferior_io_terminal (void)
181 return current_inferior ()->terminal
;
185 set_inferior_tty_command (char *args
, int from_tty
,
186 struct cmd_list_element
*c
)
188 /* CLI has assigned the user-provided value to inferior_io_terminal_scratch.
189 Now route it to current inferior. */
190 set_inferior_io_terminal (inferior_io_terminal_scratch
);
194 show_inferior_tty_command (struct ui_file
*file
, int from_tty
,
195 struct cmd_list_element
*c
, const char *value
)
197 /* Note that we ignore the passed-in value in favor of computing it
199 const char *inferior_io_terminal
= get_inferior_io_terminal ();
201 if (inferior_io_terminal
== NULL
)
202 inferior_io_terminal
= "";
203 fprintf_filtered (gdb_stdout
,
204 _("Terminal for future runs of program being debugged "
205 "is \"%s\".\n"), inferior_io_terminal
);
209 get_inferior_args (void)
211 if (current_inferior ()->argc
!= 0)
215 n
= construct_inferior_arguments (current_inferior ()->argc
,
216 current_inferior ()->argv
);
217 set_inferior_args (n
);
221 if (current_inferior ()->args
== NULL
)
222 current_inferior ()->args
= xstrdup ("");
224 return current_inferior ()->args
;
227 /* Set the arguments for the current inferior. Ownership of
228 NEWARGS is not transferred. */
231 set_inferior_args (char *newargs
)
233 xfree (current_inferior ()->args
);
234 current_inferior ()->args
= newargs
? xstrdup (newargs
) : NULL
;
235 current_inferior ()->argc
= 0;
236 current_inferior ()->argv
= 0;
240 set_inferior_args_vector (int argc
, char **argv
)
242 current_inferior ()->argc
= argc
;
243 current_inferior ()->argv
= argv
;
246 /* Notice when `set args' is run. */
248 set_args_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
250 /* CLI has assigned the user-provided value to inferior_args_scratch.
251 Now route it to current inferior. */
252 set_inferior_args (inferior_args_scratch
);
255 /* Notice when `show args' is run. */
257 show_args_command (struct ui_file
*file
, int from_tty
,
258 struct cmd_list_element
*c
, const char *value
)
260 /* Note that we ignore the passed-in value in favor of computing it
262 deprecated_show_value_hack (file
, from_tty
, c
, get_inferior_args ());
266 /* Compute command-line string given argument vector. This does the
267 same shell processing as fork_inferior. */
269 construct_inferior_arguments (int argc
, char **argv
)
273 if (STARTUP_WITH_SHELL
)
275 /* This holds all the characters considered special to the
276 typical Unix shells. We include `^' because the SunOS
277 /bin/sh treats it as a synonym for `|'. */
278 char *special
= "\"!#$&*()\\|[]{}<>?'\"`~^; \t\n";
283 /* We over-compute the size. It shouldn't matter. */
284 for (i
= 0; i
< argc
; ++i
)
285 length
+= 3 * strlen (argv
[i
]) + 1 + 2 * (argv
[i
][0] == '\0');
287 result
= (char *) xmalloc (length
);
290 for (i
= 0; i
< argc
; ++i
)
295 /* Need to handle empty arguments specially. */
296 if (argv
[i
][0] == '\0')
303 for (cp
= argv
[i
]; *cp
; ++cp
)
307 /* A newline cannot be quoted with a backslash (it
308 just disappears), only by putting it inside
316 if (strchr (special
, *cp
) != NULL
)
327 /* In this case we can't handle arguments that contain spaces,
328 tabs, or newlines -- see breakup_args(). */
332 for (i
= 0; i
< argc
; ++i
)
334 char *cp
= strchr (argv
[i
], ' ');
336 cp
= strchr (argv
[i
], '\t');
338 cp
= strchr (argv
[i
], '\n');
340 error (_("can't handle command-line argument containing whitespace"));
341 length
+= strlen (argv
[i
]) + 1;
344 result
= (char *) xmalloc (length
);
346 for (i
= 0; i
< argc
; ++i
)
349 strcat (result
, " ");
350 strcat (result
, argv
[i
]);
358 /* This function detects whether or not a '&' character (indicating
359 background execution) has been added as *the last* of the arguments ARGS
360 of a command. If it has, it removes it and returns 1. Otherwise it
361 does nothing and returns 0. */
363 strip_bg_char (char **args
)
367 p
= strchr (*args
, '&');
371 if (p
== (*args
+ strlen (*args
) - 1))
373 if (strlen (*args
) > 1)
377 while (*p
== ' ' || *p
== '\t');
388 /* Common actions to take after creating any sort of inferior, by any
389 means (running, attaching, connecting, et cetera). The target
390 should be stopped. */
393 post_create_inferior (struct target_ops
*target
, int from_tty
)
395 /* Be sure we own the terminal in case write operations are performed. */
396 target_terminal_ours ();
398 /* If the target hasn't taken care of this already, do it now.
399 Targets which need to access registers during to_open,
400 to_create_inferior, or to_attach should do it earlier; but many
402 target_find_description ();
404 /* Now that we know the register layout, retrieve current PC. */
405 stop_pc
= regcache_read_pc (get_current_regcache ());
409 /* Create the hooks to handle shared library load and unload
411 #ifdef SOLIB_CREATE_INFERIOR_HOOK
412 SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid
));
414 solib_create_inferior_hook (from_tty
);
418 /* If the solist is global across processes, there's no need to
420 if (exec_bfd
&& !gdbarch_has_global_solist (target_gdbarch
))
422 /* Sometimes the platform-specific hook loads initial shared
423 libraries, and sometimes it doesn't. If it doesn't FROM_TTY will be
424 incorrectly 0 but such solib targets should be fixed anyway. If we
425 made all the inferior hook methods consistent, this call could be
426 removed. Call it only after the solib target has been initialized by
427 solib_create_inferior_hook. */
430 SOLIB_ADD (NULL
, 0, target
, auto_solib_add
);
432 solib_add (NULL
, 0, target
, auto_solib_add
);
436 /* If the user sets watchpoints before execution having started,
437 then she gets software watchpoints, because GDB can't know which
438 target will end up being pushed, or if it supports hardware
439 watchpoints or not. breakpoint_re_set takes care of promoting
440 watchpoints to hardware watchpoints if possible, however, if this
441 new inferior doesn't load shared libraries or we don't pull in
442 symbols from any other source on this target/arch,
443 breakpoint_re_set is never called. Call it now so that software
444 watchpoints get a chance to be promoted to hardware watchpoints
445 if the now pushed target supports hardware watchpoints. */
446 breakpoint_re_set ();
448 observer_notify_inferior_created (target
, from_tty
);
451 /* Kill the inferior if already running. This function is designed
452 to be called when we are about to start the execution of the program
453 from the beginning. Ask the user to confirm that he wants to restart
454 the program being debugged when FROM_TTY is non-null. */
457 kill_if_already_running (int from_tty
)
459 if (! ptid_equal (inferior_ptid
, null_ptid
) && target_has_execution
)
461 /* Bail out before killing the program if we will not be able to
463 target_require_runnable ();
466 && !query (_("The program being debugged has been started already.\n\
467 Start it from the beginning? ")))
468 error (_("Program not restarted."));
473 /* Implement the "run" command. If TBREAK_AT_MAIN is set, then insert
474 a temporary breakpoint at the begining of the main program before
475 running the program. */
478 run_command_1 (char *args
, int from_tty
, int tbreak_at_main
)
481 struct cleanup
*old_chain
;
486 kill_if_already_running (from_tty
);
488 init_wait_for_inferior ();
489 clear_breakpoint_hit_counts ();
491 /* Clean up any leftovers from other runs. Some other things from
492 this function should probably be moved into target_pre_inferior. */
493 target_pre_inferior (from_tty
);
495 /* The comment here used to read, "The exec file is re-read every
496 time we do a generic_mourn_inferior, so we just have to worry
497 about the symbol file." The `generic_mourn_inferior' function
498 gets called whenever the program exits. However, suppose the
499 program exits, and *then* the executable file changes? We need
500 to check again here. Since reopen_exec_file doesn't do anything
501 if the timestamp hasn't changed, I don't see the harm. */
505 /* Insert the temporary breakpoint if a location was specified. */
507 tbreak_command (main_name (), 0);
509 exec_file
= (char *) get_exec_file (0);
511 if (non_stop
&& !target_supports_non_stop ())
512 error (_("The target does not support running in non-stop mode."));
514 /* We keep symbols from add-symbol-file, on the grounds that the
515 user might want to add some symbols before running the program
516 (right?). But sometimes (dynamic loading where the user manually
517 introduces the new symbols with add-symbol-file), the code which
518 the symbols describe does not persist between runs. Currently
519 the user has to manually nuke all symbols between runs if they
520 want them to go away (PR 2207). This is probably reasonable. */
524 if (target_can_async_p ())
525 async_disable_stdin ();
529 int async_exec
= strip_bg_char (&args
);
531 /* If we get a request for running in the bg but the target
532 doesn't support it, error out. */
533 if (async_exec
&& !target_can_async_p ())
534 error (_("Asynchronous execution not supported on this target."));
536 /* If we don't get a request of running in the bg, then we need
537 to simulate synchronous (fg) execution. */
538 if (!async_exec
&& target_can_async_p ())
540 /* Simulate synchronous execution */
541 async_disable_stdin ();
544 /* If there were other args, beside '&', process them. */
546 set_inferior_args (args
);
551 ui_out_field_string (uiout
, NULL
, "Starting program");
552 ui_out_text (uiout
, ": ");
554 ui_out_field_string (uiout
, "execfile", exec_file
);
555 ui_out_spaces (uiout
, 1);
556 /* We call get_inferior_args() because we might need to compute
558 ui_out_field_string (uiout
, "infargs", get_inferior_args ());
559 ui_out_text (uiout
, "\n");
560 ui_out_flush (uiout
);
563 /* We call get_inferior_args() because we might need to compute
565 target_create_inferior (exec_file
, get_inferior_args (),
566 environ_vector (current_inferior ()->environment
), from_tty
);
568 /* We're starting off a new process. When we get out of here, in
569 non-stop mode, finish the state of all threads of that process,
570 but leave other threads alone, as they may be stopped in internal
571 events --- the frontend shouldn't see them as stopped. In
572 all-stop, always finish the state of all threads, as we may be
573 resuming more than just the new process. */
575 ptid
= pid_to_ptid (ptid_get_pid (inferior_ptid
));
577 ptid
= minus_one_ptid
;
578 old_chain
= make_cleanup (finish_thread_state_cleanup
, &ptid
);
580 /* Pass zero for FROM_TTY, because at this point the "run" command
581 has done its thing; now we are setting up the running program. */
582 post_create_inferior (¤t_target
, 0);
584 /* Start the target running. Do not use -1 continuation as it would skip
585 breakpoint right at the entry point. */
586 proceed (regcache_read_pc (get_current_regcache ()), TARGET_SIGNAL_0
, 0);
588 /* Since there was no error, there's no need to finish the thread
590 discard_cleanups (old_chain
);
594 run_command (char *args
, int from_tty
)
596 run_command_1 (args
, from_tty
, 0);
600 run_no_args_command (char *args
, int from_tty
)
602 set_inferior_args ("");
606 /* Start the execution of the program up until the beginning of the main
610 start_command (char *args
, int from_tty
)
612 /* Some languages such as Ada need to search inside the program
613 minimal symbols for the location where to put the temporary
614 breakpoint before starting. */
615 if (!have_minimal_symbols ())
616 error (_("No symbol table loaded. Use the \"file\" command."));
618 /* Run the program until reaching the main procedure... */
619 run_command_1 (args
, from_tty
, 1);
623 proceed_thread_callback (struct thread_info
*thread
, void *arg
)
625 /* We go through all threads individually instead of compressing
626 into a single target `resume_all' request, because some threads
627 may be stopped in internal breakpoints/events, or stopped waiting
628 for its turn in the displaced stepping queue (that is, they are
629 running && !executing). The target side has no idea about why
630 the thread is stopped, so a `resume_all' command would resume too
631 much. If/when GDB gains a way to tell the target `hold this
632 thread stopped until I say otherwise', then we can optimize
634 if (!is_stopped (thread
->ptid
))
637 switch_to_thread (thread
->ptid
);
638 clear_proceed_status ();
639 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
644 ensure_valid_thread (void)
646 if (ptid_equal (inferior_ptid
, null_ptid
)
647 || is_exited (inferior_ptid
))
649 Cannot execute this command without a live selected thread."));
652 /* If the user is looking at trace frames, any resumption of execution
653 is likely to mix up recorded and live target data. So simply
654 disallow those commands. */
657 ensure_not_tfind_mode (void)
659 if (get_traceframe_number () >= 0)
661 Cannot execute this command while looking at trace frames."));
665 continue_1 (int all_threads
)
668 ensure_not_tfind_mode ();
670 if (non_stop
&& all_threads
)
672 /* Don't error out if the current thread is running, because
673 there may be other stopped threads. */
674 struct cleanup
*old_chain
;
676 /* Backup current thread and selected frame. */
677 old_chain
= make_cleanup_restore_current_thread ();
679 iterate_over_threads (proceed_thread_callback
, NULL
);
681 /* Restore selected ptid. */
682 do_cleanups (old_chain
);
686 ensure_valid_thread ();
687 ensure_not_running ();
688 clear_proceed_status ();
689 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
693 /* continue [-a] [proceed-count] [&] */
695 continue_command (char *args
, int from_tty
)
701 /* Find out whether we must run in the background. */
703 async_exec
= strip_bg_char (&args
);
705 /* If we must run in the background, but the target can't do it,
707 if (async_exec
&& !target_can_async_p ())
708 error (_("Asynchronous execution not supported on this target."));
710 /* If we are not asked to run in the bg, then prepare to run in the
711 foreground, synchronously. */
712 if (!async_exec
&& target_can_async_p ())
714 /* Simulate synchronous execution */
715 async_disable_stdin ();
720 if (strncmp (args
, "-a", sizeof ("-a") - 1) == 0)
723 args
+= sizeof ("-a") - 1;
729 if (!non_stop
&& all_threads
)
730 error (_("`-a' is meaningless in all-stop mode."));
732 if (args
!= NULL
&& all_threads
)
734 Can't resume all threads and specify proceed count simultaneously."));
736 /* If we have an argument left, set proceed count of breakpoint we
743 struct thread_info
*tp
;
746 tp
= find_thread_ptid (inferior_ptid
);
750 struct target_waitstatus ws
;
752 get_last_target_status (&last_ptid
, &ws
);
753 tp
= find_thread_ptid (last_ptid
);
756 bs
= tp
->control
.stop_bpstat
;
758 while ((stat
= bpstat_num (&bs
, &num
)) != 0)
761 set_ignore_count (num
,
762 parse_and_eval_long (args
) - 1,
764 /* set_ignore_count prints a message ending with a period.
765 So print two spaces before "Continuing.". */
767 printf_filtered (" ");
771 if (!stopped
&& from_tty
)
774 ("Not stopped at any breakpoint; argument ignored.\n");
779 printf_filtered (_("Continuing.\n"));
781 continue_1 (all_threads
);
784 /* Record the starting point of a "step" or "next" command. */
787 set_step_frame (void)
789 struct symtab_and_line sal
;
791 find_frame_sal (get_current_frame (), &sal
);
792 set_step_info (get_current_frame (), sal
);
795 /* Step until outside of current statement. */
798 step_command (char *count_string
, int from_tty
)
800 step_1 (0, 0, count_string
);
803 /* Likewise, but skip over subroutine calls as if single instructions. */
806 next_command (char *count_string
, int from_tty
)
808 step_1 (1, 0, count_string
);
811 /* Likewise, but step only one instruction. */
814 stepi_command (char *count_string
, int from_tty
)
816 step_1 (0, 1, count_string
);
820 nexti_command (char *count_string
, int from_tty
)
822 step_1 (1, 1, count_string
);
826 delete_longjmp_breakpoint_cleanup (void *arg
)
828 int thread
= * (int *) arg
;
829 delete_longjmp_breakpoint (thread
);
833 step_1 (int skip_subroutines
, int single_inst
, char *count_string
)
836 struct cleanup
*cleanups
= make_cleanup (null_cleanup
, NULL
);
841 ensure_not_tfind_mode ();
842 ensure_valid_thread ();
843 ensure_not_running ();
846 async_exec
= strip_bg_char (&count_string
);
848 /* If we get a request for running in the bg but the target
849 doesn't support it, error out. */
850 if (async_exec
&& !target_can_async_p ())
851 error (_("Asynchronous execution not supported on this target."));
853 /* If we don't get a request of running in the bg, then we need
854 to simulate synchronous (fg) execution. */
855 if (!async_exec
&& target_can_async_p ())
857 /* Simulate synchronous execution */
858 async_disable_stdin ();
861 count
= count_string
? parse_and_eval_long (count_string
) : 1;
863 if (!single_inst
|| skip_subroutines
) /* leave si command alone */
865 struct thread_info
*tp
= inferior_thread ();
867 if (in_thread_list (inferior_ptid
))
868 thread
= pid_to_thread_id (inferior_ptid
);
870 set_longjmp_breakpoint (tp
, get_frame_id (get_current_frame ()));
872 make_cleanup (delete_longjmp_breakpoint_cleanup
, &thread
);
875 /* In synchronous case, all is well; each step_once call will step once. */
876 if (!target_can_async_p ())
878 for (; count
> 0; count
--)
880 struct thread_info
*tp
;
882 step_once (skip_subroutines
, single_inst
, count
, thread
);
884 if (target_has_execution
885 && !ptid_equal (inferior_ptid
, null_ptid
))
886 tp
= inferior_thread ();
890 if (!tp
|| !tp
->control
.stop_step
|| !tp
->step_multi
)
892 /* If we stopped for some reason that is not stepping
893 there are no further steps to make. */
900 do_cleanups (cleanups
);
904 /* In the case of an asynchronous target things get complicated;
905 do only one step for now, before returning control to the
906 event loop. Let the continuation figure out how many other
907 steps we need to do, and handle them one at the time, through
909 step_once (skip_subroutines
, single_inst
, count
, thread
);
911 /* We are running, and the continuation is installed. It will
912 disable the longjmp breakpoint as appropriate. */
913 discard_cleanups (cleanups
);
917 struct step_1_continuation_args
920 int skip_subroutines
;
925 /* Called after we are done with one step operation, to check whether
926 we need to step again, before we print the prompt and return control
927 to the user. If count is > 1, we will need to do one more call to
928 proceed(), via step_once(). Basically it is like step_once and
929 step_1_continuation are co-recursive. */
931 step_1_continuation (void *args
)
933 struct step_1_continuation_args
*a
= args
;
935 if (target_has_execution
)
937 struct thread_info
*tp
;
939 tp
= inferior_thread ();
940 if (tp
->step_multi
&& tp
->control
.stop_step
)
942 /* There are more steps to make, and we did stop due to
943 ending a stepping range. Do another step. */
944 step_once (a
->skip_subroutines
, a
->single_inst
,
945 a
->count
- 1, a
->thread
);
951 /* We either stopped for some reason that is not stepping, or there
952 are no further steps to make. Cleanup. */
953 if (!a
->single_inst
|| a
->skip_subroutines
)
954 delete_longjmp_breakpoint (a
->thread
);
957 /* Do just one step operation. This is useful to implement the 'step
958 n' kind of commands. In case of asynchronous targets, we will have
959 to set up a continuation to be done after the target stops (after
960 this one step). For synch targets, the caller handles further
964 step_once (int skip_subroutines
, int single_inst
, int count
, int thread
)
966 struct frame_info
*frame
= get_current_frame ();
970 /* Don't assume THREAD is a valid thread id. It is set to -1 if
971 the longjmp breakpoint was not required. Use the
972 INFERIOR_PTID thread instead, which is the same thread when
974 struct thread_info
*tp
= inferior_thread ();
976 clear_proceed_status ();
983 /* Step at an inlined function behaves like "down". */
984 if (!skip_subroutines
&& !single_inst
985 && inline_skipped_frames (inferior_ptid
))
987 step_into_inline_frame (inferior_ptid
);
989 step_once (skip_subroutines
, single_inst
, count
- 1, thread
);
991 /* Pretend that we've stopped. */
996 pc
= get_frame_pc (frame
);
997 find_pc_line_pc_range (pc
,
998 &tp
->control
.step_range_start
,
999 &tp
->control
.step_range_end
);
1001 /* If we have no line info, switch to stepi mode. */
1002 if (tp
->control
.step_range_end
== 0 && step_stop_if_no_debug
)
1003 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1004 else if (tp
->control
.step_range_end
== 0)
1008 if (find_pc_partial_function (pc
, &name
,
1009 &tp
->control
.step_range_start
,
1010 &tp
->control
.step_range_end
) == 0)
1011 error (_("Cannot find bounds of current function"));
1013 target_terminal_ours ();
1014 printf_filtered (_("\
1015 Single stepping until exit from function %s,\n\
1016 which has no line number information.\n"), name
);
1021 /* Say we are stepping, but stop after one insn whatever it does. */
1022 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1023 if (!skip_subroutines
)
1025 Don't step over function calls, not even to functions lacking
1027 tp
->control
.step_over_calls
= STEP_OVER_NONE
;
1030 if (skip_subroutines
)
1031 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1033 tp
->step_multi
= (count
> 1);
1034 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
1036 /* For async targets, register a continuation to do any
1037 additional steps. For sync targets, the caller will handle
1038 further stepping. */
1039 if (target_can_async_p ())
1041 struct step_1_continuation_args
*args
;
1043 args
= xmalloc (sizeof (*args
));
1044 args
->skip_subroutines
= skip_subroutines
;
1045 args
->single_inst
= single_inst
;
1046 args
->count
= count
;
1047 args
->thread
= thread
;
1049 add_intermediate_continuation (tp
, step_1_continuation
, args
, xfree
);
1055 /* Continue program at specified address. */
1058 jump_command (char *arg
, int from_tty
)
1060 struct gdbarch
*gdbarch
= get_current_arch ();
1062 struct symtabs_and_lines sals
;
1063 struct symtab_and_line sal
;
1069 ensure_not_tfind_mode ();
1070 ensure_valid_thread ();
1071 ensure_not_running ();
1073 /* Find out whether we must run in the background. */
1075 async_exec
= strip_bg_char (&arg
);
1077 /* If we must run in the background, but the target can't do it,
1079 if (async_exec
&& !target_can_async_p ())
1080 error (_("Asynchronous execution not supported on this target."));
1083 error_no_arg (_("starting address"));
1085 sals
= decode_line_spec_1 (arg
, 1);
1086 if (sals
.nelts
!= 1)
1088 error (_("Unreasonable jump request"));
1094 if (sal
.symtab
== 0 && sal
.pc
== 0)
1095 error (_("No source file has been specified."));
1097 resolve_sal_pc (&sal
); /* May error out */
1099 /* See if we are trying to jump to another function. */
1100 fn
= get_frame_function (get_current_frame ());
1101 sfn
= find_pc_function (sal
.pc
);
1102 if (fn
!= NULL
&& sfn
!= fn
)
1104 if (!query (_("Line %d is not in `%s'. Jump anyway? "), sal
.line
,
1105 SYMBOL_PRINT_NAME (fn
)))
1107 error (_("Not confirmed."));
1114 fixup_symbol_section (sfn
, 0);
1115 if (section_is_overlay (SYMBOL_OBJ_SECTION (sfn
)) &&
1116 !section_is_mapped (SYMBOL_OBJ_SECTION (sfn
)))
1118 if (!query (_("WARNING!!! Destination is in unmapped overlay! Jump anyway? ")))
1120 error (_("Not confirmed."));
1130 printf_filtered (_("Continuing at "));
1131 fputs_filtered (paddress (gdbarch
, addr
), gdb_stdout
);
1132 printf_filtered (".\n");
1135 /* If we are not asked to run in the bg, then prepare to run in the
1136 foreground, synchronously. */
1137 if (!async_exec
&& target_can_async_p ())
1139 /* Simulate synchronous execution */
1140 async_disable_stdin ();
1143 clear_proceed_status ();
1144 proceed (addr
, TARGET_SIGNAL_0
, 0);
1148 /* Go to line or address in current procedure */
1150 go_command (char *line_no
, int from_tty
)
1152 if (line_no
== (char *) NULL
|| !*line_no
)
1153 printf_filtered (_("Usage: go <location>\n"));
1156 tbreak_command (line_no
, from_tty
);
1157 jump_command (line_no
, from_tty
);
1162 /* Continue program giving it specified signal. */
1165 signal_command (char *signum_exp
, int from_tty
)
1167 enum target_signal oursig
;
1170 dont_repeat (); /* Too dangerous. */
1172 ensure_not_tfind_mode ();
1173 ensure_valid_thread ();
1174 ensure_not_running ();
1176 /* Find out whether we must run in the background. */
1177 if (signum_exp
!= NULL
)
1178 async_exec
= strip_bg_char (&signum_exp
);
1180 /* If we must run in the background, but the target can't do it,
1182 if (async_exec
&& !target_can_async_p ())
1183 error (_("Asynchronous execution not supported on this target."));
1185 /* If we are not asked to run in the bg, then prepare to run in the
1186 foreground, synchronously. */
1187 if (!async_exec
&& target_can_async_p ())
1189 /* Simulate synchronous execution. */
1190 async_disable_stdin ();
1194 error_no_arg (_("signal number"));
1196 /* It would be even slicker to make signal names be valid expressions,
1197 (the type could be "enum $signal" or some such), then the user could
1198 assign them to convenience variables. */
1199 oursig
= target_signal_from_name (signum_exp
);
1201 if (oursig
== TARGET_SIGNAL_UNKNOWN
)
1203 /* No, try numeric. */
1204 int num
= parse_and_eval_long (signum_exp
);
1207 oursig
= TARGET_SIGNAL_0
;
1209 oursig
= target_signal_from_command (num
);
1214 if (oursig
== TARGET_SIGNAL_0
)
1215 printf_filtered (_("Continuing with no signal.\n"));
1217 printf_filtered (_("Continuing with signal %s.\n"),
1218 target_signal_to_name (oursig
));
1221 clear_proceed_status ();
1222 proceed ((CORE_ADDR
) -1, oursig
, 0);
1225 /* A continuation callback for until_next_command. */
1228 until_next_continuation (void *arg
)
1230 struct thread_info
*tp
= arg
;
1232 delete_longjmp_breakpoint (tp
->num
);
1235 /* Proceed until we reach a different source line with pc greater than
1236 our current one or exit the function. We skip calls in both cases.
1238 Note that eventually this command should probably be changed so
1239 that only source lines are printed out when we hit the breakpoint
1240 we set. This may involve changes to wait_for_inferior and the
1241 proceed status code. */
1244 until_next_command (int from_tty
)
1246 struct frame_info
*frame
;
1248 struct symbol
*func
;
1249 struct symtab_and_line sal
;
1250 struct thread_info
*tp
= inferior_thread ();
1251 int thread
= tp
->num
;
1252 struct cleanup
*old_chain
;
1254 clear_proceed_status ();
1257 frame
= get_current_frame ();
1259 /* Step until either exited from this function or greater
1260 than the current line (if in symbolic section) or pc (if
1263 pc
= get_frame_pc (frame
);
1264 func
= find_pc_function (pc
);
1268 struct minimal_symbol
*msymbol
= lookup_minimal_symbol_by_pc (pc
);
1270 if (msymbol
== NULL
)
1271 error (_("Execution is not within a known function."));
1273 tp
->control
.step_range_start
= SYMBOL_VALUE_ADDRESS (msymbol
);
1274 tp
->control
.step_range_end
= pc
;
1278 sal
= find_pc_line (pc
, 0);
1280 tp
->control
.step_range_start
= BLOCK_START (SYMBOL_BLOCK_VALUE (func
));
1281 tp
->control
.step_range_end
= sal
.end
;
1284 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1286 tp
->step_multi
= 0; /* Only one call to proceed */
1288 set_longjmp_breakpoint (tp
, get_frame_id (frame
));
1289 old_chain
= make_cleanup (delete_longjmp_breakpoint_cleanup
, &thread
);
1291 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
1293 if (target_can_async_p () && is_running (inferior_ptid
))
1295 discard_cleanups (old_chain
);
1296 add_continuation (tp
, until_next_continuation
, tp
, NULL
);
1299 do_cleanups (old_chain
);
1303 until_command (char *arg
, int from_tty
)
1308 ensure_not_tfind_mode ();
1309 ensure_valid_thread ();
1310 ensure_not_running ();
1312 /* Find out whether we must run in the background. */
1314 async_exec
= strip_bg_char (&arg
);
1316 /* If we must run in the background, but the target can't do it,
1318 if (async_exec
&& !target_can_async_p ())
1319 error (_("Asynchronous execution not supported on this target."));
1321 /* If we are not asked to run in the bg, then prepare to run in the
1322 foreground, synchronously. */
1323 if (!async_exec
&& target_can_async_p ())
1325 /* Simulate synchronous execution */
1326 async_disable_stdin ();
1330 until_break_command (arg
, from_tty
, 0);
1332 until_next_command (from_tty
);
1336 advance_command (char *arg
, int from_tty
)
1341 ensure_not_tfind_mode ();
1342 ensure_valid_thread ();
1343 ensure_not_running ();
1346 error_no_arg (_("a location"));
1348 /* Find out whether we must run in the background. */
1350 async_exec
= strip_bg_char (&arg
);
1352 /* If we must run in the background, but the target can't do it,
1354 if (async_exec
&& !target_can_async_p ())
1355 error (_("Asynchronous execution not supported on this target."));
1357 /* If we are not asked to run in the bg, then prepare to run in the
1358 foreground, synchronously. */
1359 if (!async_exec
&& target_can_async_p ())
1361 /* Simulate synchronous execution. */
1362 async_disable_stdin ();
1365 until_break_command (arg
, from_tty
, 1);
1368 /* Print the result of a function at the end of a 'finish' command. */
1371 print_return_value (struct type
*func_type
, struct type
*value_type
)
1373 struct gdbarch
*gdbarch
= get_regcache_arch (stop_registers
);
1374 struct cleanup
*old_chain
;
1375 struct ui_stream
*stb
;
1376 struct value
*value
;
1378 CHECK_TYPEDEF (value_type
);
1379 gdb_assert (TYPE_CODE (value_type
) != TYPE_CODE_VOID
);
1381 /* FIXME: 2003-09-27: When returning from a nested inferior function
1382 call, it's possible (with no help from the architecture vector)
1383 to locate and return/print a "struct return" value. This is just
1384 a more complicated case of what is already being done in in the
1385 inferior function call code. In fact, when inferior function
1386 calls are made async, this will likely be made the norm. */
1388 switch (gdbarch_return_value (gdbarch
, func_type
, value_type
,
1391 case RETURN_VALUE_REGISTER_CONVENTION
:
1392 case RETURN_VALUE_ABI_RETURNS_ADDRESS
:
1393 case RETURN_VALUE_ABI_PRESERVES_ADDRESS
:
1394 value
= allocate_value (value_type
);
1395 gdbarch_return_value (gdbarch
, func_type
, value_type
, stop_registers
,
1396 value_contents_raw (value
), NULL
);
1398 case RETURN_VALUE_STRUCT_CONVENTION
:
1402 internal_error (__FILE__
, __LINE__
, _("bad switch"));
1407 struct value_print_options opts
;
1410 stb
= ui_out_stream_new (uiout
);
1411 old_chain
= make_cleanup_ui_out_stream_delete (stb
);
1412 ui_out_text (uiout
, "Value returned is ");
1413 ui_out_field_fmt (uiout
, "gdb-result-var", "$%d",
1414 record_latest_value (value
));
1415 ui_out_text (uiout
, " = ");
1416 get_raw_print_options (&opts
);
1417 value_print (value
, stb
->stream
, &opts
);
1418 ui_out_field_stream (uiout
, "return-value", stb
);
1419 ui_out_text (uiout
, "\n");
1420 do_cleanups (old_chain
);
1424 ui_out_text (uiout
, "Value returned has type: ");
1425 ui_out_field_string (uiout
, "return-type", TYPE_NAME (value_type
));
1426 ui_out_text (uiout
, ".");
1427 ui_out_text (uiout
, " Cannot determine contents\n");
1431 /* Stuff that needs to be done by the finish command after the target
1432 has stopped. In asynchronous mode, we wait for the target to stop
1433 in the call to poll or select in the event loop, so it is
1434 impossible to do all the stuff as part of the finish_command
1435 function itself. The only chance we have to complete this command
1436 is in fetch_inferior_event, which is called by the event loop as
1437 soon as it detects that the target has stopped. This function is
1438 called via the cmd_continuation pointer. */
1440 struct finish_command_continuation_args
1442 struct breakpoint
*breakpoint
;
1443 struct symbol
*function
;
1447 finish_command_continuation (void *arg
)
1449 struct finish_command_continuation_args
*a
= arg
;
1450 struct thread_info
*tp
= NULL
;
1453 if (!ptid_equal (inferior_ptid
, null_ptid
)
1454 && target_has_execution
1455 && is_stopped (inferior_ptid
))
1457 tp
= inferior_thread ();
1458 bs
= tp
->control
.stop_bpstat
;
1461 if (bpstat_find_breakpoint (bs
, a
->breakpoint
) != NULL
1462 && a
->function
!= NULL
)
1464 struct type
*value_type
;
1466 value_type
= TYPE_TARGET_TYPE (SYMBOL_TYPE (a
->function
));
1468 internal_error (__FILE__
, __LINE__
,
1469 _("finish_command: function has no target type"));
1471 if (TYPE_CODE (value_type
) != TYPE_CODE_VOID
)
1473 volatile struct gdb_exception ex
;
1475 TRY_CATCH (ex
, RETURN_MASK_ALL
)
1477 /* print_return_value can throw an exception in some
1478 circumstances. We need to catch this so that we still
1479 delete the breakpoint. */
1480 print_return_value (SYMBOL_TYPE (a
->function
), value_type
);
1483 exception_print (gdb_stdout
, ex
);
1487 /* We suppress normal call of normal_stop observer and do it here so
1488 that the *stopped notification includes the return value. */
1489 if (bs
!= NULL
&& tp
->control
.proceed_to_finish
)
1490 observer_notify_normal_stop (bs
, 1 /* print frame */);
1491 delete_breakpoint (a
->breakpoint
);
1492 delete_longjmp_breakpoint (inferior_thread ()->num
);
1496 finish_command_continuation_free_arg (void *arg
)
1501 /* finish_backward -- helper function for finish_command. */
1504 finish_backward (struct symbol
*function
)
1506 struct symtab_and_line sal
;
1507 struct thread_info
*tp
= inferior_thread ();
1508 struct breakpoint
*breakpoint
;
1509 struct cleanup
*old_chain
;
1511 CORE_ADDR func_addr
;
1514 pc
= get_frame_pc (get_current_frame ());
1516 if (find_pc_partial_function (pc
, NULL
, &func_addr
, NULL
) == 0)
1517 internal_error (__FILE__
, __LINE__
,
1518 _("Finish: couldn't find function."));
1520 sal
= find_pc_line (func_addr
, 0);
1522 /* We don't need a return value. */
1523 tp
->control
.proceed_to_finish
= 0;
1524 /* Special case: if we're sitting at the function entry point,
1525 then all we need to do is take a reverse singlestep. We
1526 don't need to set a breakpoint, and indeed it would do us
1529 Note that this can only happen at frame #0, since there's
1530 no way that a function up the stack can have a return address
1531 that's equal to its entry point. */
1535 struct frame_info
*frame
= get_selected_frame (NULL
);
1536 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
1538 /* Set breakpoint and continue. */
1540 set_momentary_breakpoint (gdbarch
, sal
,
1541 get_stack_frame_id (frame
),
1543 /* Tell the breakpoint to keep quiet. We won't be done
1544 until we've done another reverse single-step. */
1545 make_breakpoint_silent (breakpoint
);
1546 old_chain
= make_cleanup_delete_breakpoint (breakpoint
);
1547 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
1548 /* We will be stopped when proceed returns. */
1549 back_up
= (bpstat_find_breakpoint (tp
->control
.stop_bpstat
, breakpoint
)
1551 do_cleanups (old_chain
);
1557 /* If in fact we hit the step-resume breakpoint (and not
1558 some other breakpoint), then we're almost there --
1559 we just need to back up by one more single-step. */
1560 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1561 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
1566 /* finish_forward -- helper function for finish_command. */
1569 finish_forward (struct symbol
*function
, struct frame_info
*frame
)
1571 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
1572 struct symtab_and_line sal
;
1573 struct thread_info
*tp
= inferior_thread ();
1574 struct breakpoint
*breakpoint
;
1575 struct cleanup
*old_chain
;
1576 struct finish_command_continuation_args
*cargs
;
1577 int thread
= tp
->num
;
1579 sal
= find_pc_line (get_frame_pc (frame
), 0);
1580 sal
.pc
= get_frame_pc (frame
);
1582 breakpoint
= set_momentary_breakpoint (gdbarch
, sal
,
1583 get_stack_frame_id (frame
),
1586 old_chain
= make_cleanup_delete_breakpoint (breakpoint
);
1588 set_longjmp_breakpoint (tp
, get_frame_id (frame
));
1589 make_cleanup (delete_longjmp_breakpoint_cleanup
, &thread
);
1591 /* We want stop_registers, please... */
1592 tp
->control
.proceed_to_finish
= 1;
1593 cargs
= xmalloc (sizeof (*cargs
));
1595 cargs
->breakpoint
= breakpoint
;
1596 cargs
->function
= function
;
1597 add_continuation (tp
, finish_command_continuation
, cargs
,
1598 finish_command_continuation_free_arg
);
1599 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
1601 discard_cleanups (old_chain
);
1602 if (!target_can_async_p ())
1603 do_all_continuations ();
1606 /* "finish": Set a temporary breakpoint at the place the selected
1607 frame will return to, then continue. */
1610 finish_command (char *arg
, int from_tty
)
1612 struct frame_info
*frame
;
1613 struct symbol
*function
;
1618 ensure_not_tfind_mode ();
1619 ensure_valid_thread ();
1620 ensure_not_running ();
1622 /* Find out whether we must run in the background. */
1624 async_exec
= strip_bg_char (&arg
);
1626 /* If we must run in the background, but the target can't do it,
1628 if (async_exec
&& !target_can_async_p ())
1629 error (_("Asynchronous execution not supported on this target."));
1631 /* Don't try to async in reverse. */
1632 if (async_exec
&& execution_direction
== EXEC_REVERSE
)
1633 error (_("Asynchronous 'finish' not supported in reverse."));
1635 /* If we are not asked to run in the bg, then prepare to run in the
1636 foreground, synchronously. */
1637 if (!async_exec
&& target_can_async_p ())
1639 /* Simulate synchronous execution. */
1640 async_disable_stdin ();
1644 error (_("The \"finish\" command does not take any arguments."));
1646 frame
= get_prev_frame (get_selected_frame (_("No selected frame.")));
1648 error (_("\"finish\" not meaningful in the outermost frame."));
1650 clear_proceed_status ();
1652 /* Finishing from an inline frame is completely different. We don't
1653 try to show the "return value" - no way to locate it. So we do
1654 not need a completion. */
1655 if (get_frame_type (get_selected_frame (_("No selected frame.")))
1658 /* Claim we are stepping in the calling frame. An empty step
1659 range means that we will stop once we aren't in a function
1660 called by that frame. We don't use the magic "1" value for
1661 step_range_end, because then infrun will think this is nexti,
1662 and not step over the rest of this inlined function call. */
1663 struct thread_info
*tp
= inferior_thread ();
1664 struct symtab_and_line empty_sal
;
1666 init_sal (&empty_sal
);
1667 set_step_info (frame
, empty_sal
);
1668 tp
->control
.step_range_start
= get_frame_pc (frame
);
1669 tp
->control
.step_range_end
= tp
->control
.step_range_start
;
1670 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1672 /* Print info on the selected frame, including level number but not
1676 printf_filtered (_("Run till exit from "));
1677 print_stack_frame (get_selected_frame (NULL
), 1, LOCATION
);
1680 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
1684 /* Find the function we will return from. */
1686 function
= find_pc_function (get_frame_pc (get_selected_frame (NULL
)));
1688 /* Print info on the selected frame, including level number but not
1692 if (execution_direction
== EXEC_REVERSE
)
1693 printf_filtered (_("Run back to call of "));
1695 printf_filtered (_("Run till exit from "));
1697 print_stack_frame (get_selected_frame (NULL
), 1, LOCATION
);
1700 if (execution_direction
== EXEC_REVERSE
)
1701 finish_backward (function
);
1703 finish_forward (function
, frame
);
1708 program_info (char *args
, int from_tty
)
1712 struct thread_info
*tp
;
1715 if (!target_has_execution
)
1717 printf_filtered (_("The program being debugged is not being run.\n"));
1722 ptid
= inferior_ptid
;
1725 struct target_waitstatus ws
;
1727 get_last_target_status (&ptid
, &ws
);
1730 if (ptid_equal (ptid
, null_ptid
) || is_exited (ptid
))
1731 error (_("Invalid selected thread."));
1732 else if (is_running (ptid
))
1733 error (_("Selected thread is running."));
1735 tp
= find_thread_ptid (ptid
);
1736 bs
= tp
->control
.stop_bpstat
;
1737 stat
= bpstat_num (&bs
, &num
);
1739 target_files_info ();
1740 printf_filtered (_("Program stopped at %s.\n"),
1741 paddress (target_gdbarch
, stop_pc
));
1742 if (tp
->control
.stop_step
)
1743 printf_filtered (_("It stopped after being stepped.\n"));
1746 /* There may be several breakpoints in the same place, so this
1747 isn't as strange as it seems. */
1752 printf_filtered (_("\
1753 It stopped at a breakpoint that has since been deleted.\n"));
1756 printf_filtered (_("It stopped at breakpoint %d.\n"), num
);
1757 stat
= bpstat_num (&bs
, &num
);
1760 else if (tp
->suspend
.stop_signal
!= TARGET_SIGNAL_0
)
1762 printf_filtered (_("It stopped with signal %s, %s.\n"),
1763 target_signal_to_name (tp
->suspend
.stop_signal
),
1764 target_signal_to_string (tp
->suspend
.stop_signal
));
1769 printf_filtered (_("\
1770 Type \"info stack\" or \"info registers\" for more information.\n"));
1775 environment_info (char *var
, int from_tty
)
1779 char *val
= get_in_environ (current_inferior ()->environment
, var
);
1783 puts_filtered (var
);
1784 puts_filtered (" = ");
1785 puts_filtered (val
);
1786 puts_filtered ("\n");
1790 puts_filtered ("Environment variable \"");
1791 puts_filtered (var
);
1792 puts_filtered ("\" not defined.\n");
1797 char **vector
= environ_vector (current_inferior ()->environment
);
1801 puts_filtered (*vector
++);
1802 puts_filtered ("\n");
1808 set_environment_command (char *arg
, int from_tty
)
1810 char *p
, *val
, *var
;
1814 error_no_arg (_("environment variable and value"));
1816 /* Find seperation between variable name and value */
1817 p
= (char *) strchr (arg
, '=');
1818 val
= (char *) strchr (arg
, ' ');
1820 if (p
!= 0 && val
!= 0)
1822 /* We have both a space and an equals. If the space is before the
1823 equals, walk forward over the spaces til we see a nonspace
1824 (possibly the equals). */
1829 /* Now if the = is after the char following the spaces,
1830 take the char following the spaces. */
1834 else if (val
!= 0 && p
== 0)
1838 error_no_arg (_("environment variable to set"));
1840 if (p
== 0 || p
[1] == 0)
1844 p
= arg
+ strlen (arg
); /* So that savestring below will work */
1848 /* Not setting variable value to null */
1850 while (*val
== ' ' || *val
== '\t')
1854 while (p
!= arg
&& (p
[-1] == ' ' || p
[-1] == '\t'))
1857 var
= savestring (arg
, p
- arg
);
1860 printf_filtered (_("\
1861 Setting environment variable \"%s\" to null value.\n"),
1863 set_in_environ (current_inferior ()->environment
, var
, "");
1866 set_in_environ (current_inferior ()->environment
, var
, val
);
1871 unset_environment_command (char *var
, int from_tty
)
1875 /* If there is no argument, delete all environment variables.
1876 Ask for confirmation if reading from the terminal. */
1877 if (!from_tty
|| query (_("Delete all environment variables? ")))
1879 free_environ (current_inferior ()->environment
);
1880 current_inferior ()->environment
= make_environ ();
1884 unset_in_environ (current_inferior ()->environment
, var
);
1887 /* Handle the execution path (PATH variable) */
1889 static const char path_var_name
[] = "PATH";
1892 path_info (char *args
, int from_tty
)
1894 puts_filtered ("Executable and object file path: ");
1895 puts_filtered (get_in_environ (current_inferior ()->environment
, path_var_name
));
1896 puts_filtered ("\n");
1899 /* Add zero or more directories to the front of the execution path. */
1902 path_command (char *dirname
, int from_tty
)
1908 env
= get_in_environ (current_inferior ()->environment
, path_var_name
);
1909 /* Can be null if path is not set */
1912 exec_path
= xstrdup (env
);
1913 mod_path (dirname
, &exec_path
);
1914 set_in_environ (current_inferior ()->environment
, path_var_name
, exec_path
);
1917 path_info ((char *) NULL
, from_tty
);
1921 /* Print out the machine register regnum. If regnum is -1, print all
1922 registers (print_all == 1) or all non-float and non-vector
1923 registers (print_all == 0).
1925 For most machines, having all_registers_info() print the
1926 register(s) one per line is good enough. If a different format is
1927 required, (eg, for MIPS or Pyramid 90x, which both have lots of
1928 regs), or there is an existing convention for showing all the
1929 registers, define the architecture method PRINT_REGISTERS_INFO to
1930 provide that format. */
1933 default_print_registers_info (struct gdbarch
*gdbarch
,
1934 struct ui_file
*file
,
1935 struct frame_info
*frame
,
1936 int regnum
, int print_all
)
1939 const int numregs
= gdbarch_num_regs (gdbarch
)
1940 + gdbarch_num_pseudo_regs (gdbarch
);
1941 gdb_byte buffer
[MAX_REGISTER_SIZE
];
1943 for (i
= 0; i
< numregs
; i
++)
1945 /* Decide between printing all regs, non-float / vector regs, or
1951 if (!gdbarch_register_reggroup_p (gdbarch
, i
, all_reggroup
))
1956 if (!gdbarch_register_reggroup_p (gdbarch
, i
, general_reggroup
))
1966 /* If the register name is empty, it is undefined for this
1967 processor, so don't display anything. */
1968 if (gdbarch_register_name (gdbarch
, i
) == NULL
1969 || *(gdbarch_register_name (gdbarch
, i
)) == '\0')
1972 fputs_filtered (gdbarch_register_name (gdbarch
, i
), file
);
1973 print_spaces_filtered (15 - strlen (gdbarch_register_name
1974 (gdbarch
, i
)), file
);
1976 /* Get the data in raw format. */
1977 if (! frame_register_read (frame
, i
, buffer
))
1979 fprintf_filtered (file
, "*value not available*\n");
1983 /* If virtual format is floating, print it that way, and in raw
1985 if (TYPE_CODE (register_type (gdbarch
, i
)) == TYPE_CODE_FLT
1986 || TYPE_CODE (register_type (gdbarch
, i
)) == TYPE_CODE_DECFLOAT
)
1989 struct value_print_options opts
;
1991 get_user_print_options (&opts
);
1993 val_print (register_type (gdbarch
, i
), buffer
, 0, 0,
1994 file
, 0, NULL
, &opts
, current_language
);
1996 fprintf_filtered (file
, "\t(raw 0x");
1997 for (j
= 0; j
< register_size (gdbarch
, i
); j
++)
2001 if (gdbarch_byte_order (gdbarch
) == BFD_ENDIAN_BIG
)
2004 idx
= register_size (gdbarch
, i
) - 1 - j
;
2005 fprintf_filtered (file
, "%02x", (unsigned char) buffer
[idx
]);
2007 fprintf_filtered (file
, ")");
2011 struct value_print_options opts
;
2013 /* Print the register in hex. */
2014 get_formatted_print_options (&opts
, 'x');
2016 val_print (register_type (gdbarch
, i
), buffer
, 0, 0,
2017 file
, 0, NULL
, &opts
, current_language
);
2018 /* If not a vector register, print it also according to its
2020 if (TYPE_VECTOR (register_type (gdbarch
, i
)) == 0)
2022 get_user_print_options (&opts
);
2024 fprintf_filtered (file
, "\t");
2025 val_print (register_type (gdbarch
, i
), buffer
, 0, 0,
2026 file
, 0, NULL
, &opts
, current_language
);
2030 fprintf_filtered (file
, "\n");
2035 registers_info (char *addr_exp
, int fpregs
)
2037 struct frame_info
*frame
;
2038 struct gdbarch
*gdbarch
;
2040 if (!target_has_registers
)
2041 error (_("The program has no registers now."));
2042 frame
= get_selected_frame (NULL
);
2043 gdbarch
= get_frame_arch (frame
);
2047 gdbarch_print_registers_info (gdbarch
, gdb_stdout
,
2052 while (*addr_exp
!= '\0')
2057 /* Keep skipping leading white space. */
2058 if (isspace ((*addr_exp
)))
2064 /* Discard any leading ``$''. Check that there is something
2065 resembling a register following it. */
2066 if (addr_exp
[0] == '$')
2068 if (isspace ((*addr_exp
)) || (*addr_exp
) == '\0')
2069 error (_("Missing register name"));
2071 /* Find the start/end of this register name/num/group. */
2073 while ((*addr_exp
) != '\0' && !isspace ((*addr_exp
)))
2077 /* Figure out what we've found and display it. */
2079 /* A register name? */
2081 int regnum
= user_reg_map_name_to_regnum (gdbarch
, start
, end
- start
);
2085 /* User registers lie completely outside of the range of
2086 normal registers. Catch them early so that the target
2088 if (regnum
>= gdbarch_num_regs (gdbarch
)
2089 + gdbarch_num_pseudo_regs (gdbarch
))
2091 struct value_print_options opts
;
2092 struct value
*val
= value_of_user_reg (regnum
, frame
);
2094 printf_filtered ("%s: ", start
);
2095 get_formatted_print_options (&opts
, 'x');
2096 print_scalar_formatted (value_contents (val
),
2097 check_typedef (value_type (val
)),
2098 &opts
, 0, gdb_stdout
);
2099 printf_filtered ("\n");
2102 gdbarch_print_registers_info (gdbarch
, gdb_stdout
,
2103 frame
, regnum
, fpregs
);
2108 /* A register group? */
2110 struct reggroup
*group
;
2112 for (group
= reggroup_next (gdbarch
, NULL
);
2114 group
= reggroup_next (gdbarch
, group
))
2116 /* Don't bother with a length check. Should the user
2117 enter a short register group name, go with the first
2118 group that matches. */
2119 if (strncmp (start
, reggroup_name (group
), end
- start
) == 0)
2127 regnum
< gdbarch_num_regs (gdbarch
)
2128 + gdbarch_num_pseudo_regs (gdbarch
);
2131 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, group
))
2132 gdbarch_print_registers_info (gdbarch
,
2140 /* Nothing matched. */
2141 error (_("Invalid register `%.*s'"), (int) (end
- start
), start
);
2146 all_registers_info (char *addr_exp
, int from_tty
)
2148 registers_info (addr_exp
, 1);
2152 nofp_registers_info (char *addr_exp
, int from_tty
)
2154 registers_info (addr_exp
, 0);
2158 print_vector_info (struct ui_file
*file
,
2159 struct frame_info
*frame
, const char *args
)
2161 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
2163 if (gdbarch_print_vector_info_p (gdbarch
))
2164 gdbarch_print_vector_info (gdbarch
, file
, frame
, args
);
2168 int printed_something
= 0;
2171 regnum
< gdbarch_num_regs (gdbarch
)
2172 + gdbarch_num_pseudo_regs (gdbarch
);
2175 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, vector_reggroup
))
2177 printed_something
= 1;
2178 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
2181 if (!printed_something
)
2182 fprintf_filtered (file
, "No vector information\n");
2187 vector_info (char *args
, int from_tty
)
2189 if (!target_has_registers
)
2190 error (_("The program has no registers now."));
2192 print_vector_info (gdb_stdout
, get_selected_frame (NULL
), args
);
2195 /* Kill the inferior process. Make us have no inferior. */
2198 kill_command (char *arg
, int from_tty
)
2200 /* FIXME: This should not really be inferior_ptid (or target_has_execution).
2201 It should be a distinct flag that indicates that a target is active, cuz
2202 some targets don't have processes! */
2204 if (ptid_equal (inferior_ptid
, null_ptid
))
2205 error (_("The program is not being run."));
2206 if (!query (_("Kill the program being debugged? ")))
2207 error (_("Not confirmed."));
2210 /* If we still have other inferiors to debug, then don't mess with
2211 with their threads. */
2212 if (!have_inferiors ())
2214 init_thread_list (); /* Destroy thread info */
2216 /* Killing off the inferior can leave us with a core file. If
2217 so, print the state we are left in. */
2218 if (target_has_stack
)
2220 printf_filtered (_("In %s,\n"), target_longname
);
2221 print_stack_frame (get_selected_frame (NULL
), 1, SRC_AND_LOC
);
2224 bfd_cache_close_all ();
2227 /* Used in `attach&' command. ARG is a point to an integer
2228 representing a process id. Proceed threads of this process iff
2229 they stopped due to debugger request, and when they did, they
2230 reported a clean stop (TARGET_SIGNAL_0). Do not proceed threads
2231 that have been explicitly been told to stop. */
2234 proceed_after_attach_callback (struct thread_info
*thread
,
2237 int pid
= * (int *) arg
;
2239 if (ptid_get_pid (thread
->ptid
) == pid
2240 && !is_exited (thread
->ptid
)
2241 && !is_executing (thread
->ptid
)
2242 && !thread
->stop_requested
2243 && thread
->suspend
.stop_signal
== TARGET_SIGNAL_0
)
2245 switch_to_thread (thread
->ptid
);
2246 clear_proceed_status ();
2247 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
2254 proceed_after_attach (int pid
)
2256 /* Don't error out if the current thread is running, because
2257 there may be other stopped threads. */
2258 struct cleanup
*old_chain
;
2260 /* Backup current thread and selected frame. */
2261 old_chain
= make_cleanup_restore_current_thread ();
2263 iterate_over_threads (proceed_after_attach_callback
, &pid
);
2265 /* Restore selected ptid. */
2266 do_cleanups (old_chain
);
2271 * Should save/restore the tty state since it might be that the
2272 * program to be debugged was started on this tty and it wants
2273 * the tty in some state other than what we want. If it's running
2274 * on another terminal or without a terminal, then saving and
2275 * restoring the tty state is a harmless no-op.
2276 * This only needs to be done if we are attaching to a process.
2281 takes a program started up outside of gdb and ``attaches'' to it.
2282 This stops it cold in its tracks and allows us to start debugging it.
2283 and wait for the trace-trap that results from attaching. */
2286 attach_command_post_wait (char *args
, int from_tty
, int async_exec
)
2289 char *full_exec_path
= NULL
;
2290 struct inferior
*inferior
;
2292 inferior
= current_inferior ();
2293 inferior
->control
.stop_soon
= NO_STOP_QUIETLY
;
2295 /* If no exec file is yet known, try to determine it from the
2297 exec_file
= (char *) get_exec_file (0);
2300 exec_file
= target_pid_to_exec_file (PIDGET (inferior_ptid
));
2303 /* It's possible we don't have a full path, but rather just a
2304 filename. Some targets, such as HP-UX, don't provide the
2307 Attempt to qualify the filename against the source path.
2308 (If that fails, we'll just fall back on the original
2309 filename. Not much more we can do...)
2311 if (!source_full_path_of (exec_file
, &full_exec_path
))
2312 full_exec_path
= xstrdup (exec_file
);
2314 exec_file_attach (full_exec_path
, from_tty
);
2315 symbol_file_add_main (full_exec_path
, from_tty
);
2320 reopen_exec_file ();
2324 /* Take any necessary post-attaching actions for this platform. */
2325 target_post_attach (PIDGET (inferior_ptid
));
2327 post_create_inferior (¤t_target
, from_tty
);
2329 /* Install inferior's terminal modes. */
2330 target_terminal_inferior ();
2334 /* The user requested an `attach&', so be sure to leave threads
2335 that didn't get a signal running. */
2337 /* Immediatelly resume all suspended threads of this inferior,
2338 and this inferior only. This should have no effect on
2339 already running threads. If a thread has been stopped with a
2340 signal, leave it be. */
2342 proceed_after_attach (inferior
->pid
);
2345 if (inferior_thread ()->suspend
.stop_signal
== TARGET_SIGNAL_0
)
2347 clear_proceed_status ();
2348 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
2354 /* The user requested a plain `attach', so be sure to leave
2355 the inferior stopped. */
2357 if (target_can_async_p ())
2358 async_enable_stdin ();
2360 /* At least the current thread is already stopped. */
2362 /* In all-stop, by definition, all threads have to be already
2363 stopped at this point. In non-stop, however, although the
2364 selected thread is stopped, others may still be executing.
2365 Be sure to explicitly stop all threads of the process. This
2366 should have no effect on already stopped threads. */
2368 target_stop (pid_to_ptid (inferior
->pid
));
2370 /* Tell the user/frontend where we're stopped. */
2372 if (deprecated_attach_hook
)
2373 deprecated_attach_hook ();
2377 struct attach_command_continuation_args
2385 attach_command_continuation (void *args
)
2387 struct attach_command_continuation_args
*a
= args
;
2389 attach_command_post_wait (a
->args
, a
->from_tty
, a
->async_exec
);
2393 attach_command_continuation_free_args (void *args
)
2395 struct attach_command_continuation_args
*a
= args
;
2402 attach_command (char *args
, int from_tty
)
2405 struct cleanup
*back_to
= make_cleanup (null_cleanup
, NULL
);
2407 dont_repeat (); /* Not for the faint of heart */
2409 if (gdbarch_has_global_solist (target_gdbarch
))
2410 /* Don't complain if all processes share the same symbol
2413 else if (target_has_execution
)
2415 if (query (_("A program is being debugged already. Kill it? ")))
2418 error (_("Not killed."));
2421 /* Clean up any leftovers from other runs. Some other things from
2422 this function should probably be moved into target_pre_inferior. */
2423 target_pre_inferior (from_tty
);
2425 if (non_stop
&& !target_supports_non_stop ())
2426 error (_("Cannot attach to this target in non-stop mode"));
2430 async_exec
= strip_bg_char (&args
);
2432 /* If we get a request for running in the bg but the target
2433 doesn't support it, error out. */
2434 if (async_exec
&& !target_can_async_p ())
2435 error (_("Asynchronous execution not supported on this target."));
2438 /* If we don't get a request of running in the bg, then we need
2439 to simulate synchronous (fg) execution. */
2440 if (!async_exec
&& target_can_async_p ())
2442 /* Simulate synchronous execution */
2443 async_disable_stdin ();
2444 make_cleanup ((make_cleanup_ftype
*)async_enable_stdin
, NULL
);
2447 target_attach (args
, from_tty
);
2449 /* Set up the "saved terminal modes" of the inferior
2450 based on what modes we are starting it with. */
2451 target_terminal_init ();
2453 /* Set up execution context to know that we should return from
2454 wait_for_inferior as soon as the target reports a stop. */
2455 init_wait_for_inferior ();
2456 clear_proceed_status ();
2460 /* If we find that the current thread isn't stopped, explicitly
2461 do so now, because we're going to install breakpoints and
2465 /* The user requested an `attach&'; stop just one thread. */
2466 target_stop (inferior_ptid
);
2468 /* The user requested an `attach', so stop all threads of this
2470 target_stop (pid_to_ptid (ptid_get_pid (inferior_ptid
)));
2473 /* Some system don't generate traps when attaching to inferior.
2474 E.g. Mach 3 or GNU hurd. */
2475 if (!target_attach_no_wait
)
2477 struct inferior
*inferior
= current_inferior ();
2479 /* Careful here. See comments in inferior.h. Basically some
2480 OSes don't ignore SIGSTOPs on continue requests anymore. We
2481 need a way for handle_inferior_event to reset the stop_signal
2482 variable after an attach, and this is what
2483 STOP_QUIETLY_NO_SIGSTOP is for. */
2484 inferior
->control
.stop_soon
= STOP_QUIETLY_NO_SIGSTOP
;
2486 if (target_can_async_p ())
2488 /* sync_execution mode. Wait for stop. */
2489 struct attach_command_continuation_args
*a
;
2491 a
= xmalloc (sizeof (*a
));
2492 a
->args
= xstrdup (args
);
2493 a
->from_tty
= from_tty
;
2494 a
->async_exec
= async_exec
;
2495 add_inferior_continuation (attach_command_continuation
, a
,
2496 attach_command_continuation_free_args
);
2497 discard_cleanups (back_to
);
2501 wait_for_inferior (0);
2504 attach_command_post_wait (args
, from_tty
, async_exec
);
2505 discard_cleanups (back_to
);
2508 /* We had just found out that the target was already attached to an
2509 inferior. PTID points at a thread of this new inferior, that is
2510 the most likely to be stopped right now, but not necessarily so.
2511 The new inferior is assumed to be already added to the inferior
2512 list at this point. If LEAVE_RUNNING, then leave the threads of
2513 this inferior running, except those we've explicitly seen reported
2517 notice_new_inferior (ptid_t ptid
, int leave_running
, int from_tty
)
2519 struct cleanup
* old_chain
;
2522 old_chain
= make_cleanup (null_cleanup
, NULL
);
2524 /* If in non-stop, leave threads as running as they were. If
2525 they're stopped for some reason other than us telling it to, the
2526 target reports a signal != TARGET_SIGNAL_0. We don't try to
2527 resume threads with such a stop signal. */
2528 async_exec
= non_stop
;
2530 if (!ptid_equal (inferior_ptid
, null_ptid
))
2531 make_cleanup_restore_current_thread ();
2533 switch_to_thread (ptid
);
2535 /* When we "notice" a new inferior we need to do all the things we
2536 would normally do if we had just attached to it. */
2538 if (is_executing (inferior_ptid
))
2540 struct inferior
*inferior
= current_inferior ();
2542 /* We're going to install breakpoints, and poke at memory,
2543 ensure that the inferior is stopped for a moment while we do
2545 target_stop (inferior_ptid
);
2547 inferior
->control
.stop_soon
= STOP_QUIETLY_REMOTE
;
2549 /* Wait for stop before proceeding. */
2550 if (target_can_async_p ())
2552 struct attach_command_continuation_args
*a
;
2554 a
= xmalloc (sizeof (*a
));
2555 a
->args
= xstrdup ("");
2556 a
->from_tty
= from_tty
;
2557 a
->async_exec
= async_exec
;
2558 add_inferior_continuation (attach_command_continuation
, a
,
2559 attach_command_continuation_free_args
);
2561 do_cleanups (old_chain
);
2565 wait_for_inferior (0);
2568 async_exec
= leave_running
;
2569 attach_command_post_wait ("" /* args */, from_tty
, async_exec
);
2571 do_cleanups (old_chain
);
2576 * takes a program previously attached to and detaches it.
2577 * The program resumes execution and will no longer stop
2578 * on signals, etc. We better not have left any breakpoints
2579 * in the program or it'll die when it hits one. For this
2580 * to work, it may be necessary for the process to have been
2581 * previously attached. It *might* work if the program was
2582 * started via the normal ptrace (PTRACE_TRACEME).
2586 detach_command (char *args
, int from_tty
)
2588 dont_repeat (); /* Not for the faint of heart. */
2590 if (ptid_equal (inferior_ptid
, null_ptid
))
2591 error (_("The program is not being run."));
2593 disconnect_tracing (from_tty
);
2595 target_detach (args
, from_tty
);
2597 /* If the solist is global across inferiors, don't clear it when we
2598 detach from a single inferior. */
2599 if (!gdbarch_has_global_solist (target_gdbarch
))
2600 no_shared_libraries (NULL
, from_tty
);
2602 /* If we still have inferiors to debug, then don't mess with their
2604 if (!have_inferiors ())
2605 init_thread_list ();
2607 if (deprecated_detach_hook
)
2608 deprecated_detach_hook ();
2611 /* Disconnect from the current target without resuming it (leaving it
2612 waiting for a debugger).
2614 We'd better not have left any breakpoints in the program or the
2615 next debugger will get confused. Currently only supported for some
2616 remote targets, since the normal attach mechanisms don't work on
2617 stopped processes on some native platforms (e.g. GNU/Linux). */
2620 disconnect_command (char *args
, int from_tty
)
2622 dont_repeat (); /* Not for the faint of heart */
2623 target_disconnect (args
, from_tty
);
2624 no_shared_libraries (NULL
, from_tty
);
2625 init_thread_list ();
2626 if (deprecated_detach_hook
)
2627 deprecated_detach_hook ();
2631 interrupt_target_1 (int all_threads
)
2636 ptid
= minus_one_ptid
;
2638 ptid
= inferior_ptid
;
2641 /* Tag the thread as having been explicitly requested to stop, so
2642 other parts of gdb know not to resume this thread automatically,
2643 if it was stopped due to an internal event. Limit this to
2644 non-stop mode, as when debugging a multi-threaded application in
2645 all-stop mode, we will only get one stop event --- it's undefined
2646 which thread will report the event. */
2648 set_stop_requested (ptid
, 1);
2651 /* Stop the execution of the target while running in async mode, in
2652 the backgound. In all-stop, stop the whole process. In non-stop
2653 mode, stop the current thread only by default, or stop all threads
2654 if the `-a' switch is used. */
2656 /* interrupt [-a] */
2658 interrupt_target_command (char *args
, int from_tty
)
2660 if (target_can_async_p ())
2662 int all_threads
= 0;
2664 dont_repeat (); /* Not for the faint of heart */
2667 && strncmp (args
, "-a", sizeof ("-a") - 1) == 0)
2670 if (!non_stop
&& all_threads
)
2671 error (_("-a is meaningless in all-stop mode."));
2673 interrupt_target_1 (all_threads
);
2678 print_float_info (struct ui_file
*file
,
2679 struct frame_info
*frame
, const char *args
)
2681 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
2683 if (gdbarch_print_float_info_p (gdbarch
))
2684 gdbarch_print_float_info (gdbarch
, file
, frame
, args
);
2688 int printed_something
= 0;
2691 regnum
< gdbarch_num_regs (gdbarch
)
2692 + gdbarch_num_pseudo_regs (gdbarch
);
2695 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, float_reggroup
))
2697 printed_something
= 1;
2698 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
2701 if (!printed_something
)
2702 fprintf_filtered (file
, "\
2703 No floating-point info available for this processor.\n");
2708 float_info (char *args
, int from_tty
)
2710 if (!target_has_registers
)
2711 error (_("The program has no registers now."));
2713 print_float_info (gdb_stdout
, get_selected_frame (NULL
), args
);
2717 unset_command (char *args
, int from_tty
)
2719 printf_filtered (_("\
2720 \"unset\" must be followed by the name of an unset subcommand.\n"));
2721 help_list (unsetlist
, "unset ", -1, gdb_stdout
);
2725 _initialize_infcmd (void)
2727 struct cmd_list_element
*c
= NULL
;
2729 /* add the filename of the terminal connected to inferior I/O */
2730 add_setshow_filename_cmd ("inferior-tty", class_run
,
2731 &inferior_io_terminal_scratch
, _("\
2732 Set terminal for future runs of program being debugged."), _("\
2733 Show terminal for future runs of program being debugged."), _("\
2734 Usage: set inferior-tty /dev/pts/1"),
2735 set_inferior_tty_command
,
2736 show_inferior_tty_command
,
2737 &setlist
, &showlist
);
2738 add_com_alias ("tty", "set inferior-tty", class_alias
, 0);
2740 add_setshow_optional_filename_cmd ("args", class_run
,
2741 &inferior_args_scratch
, _("\
2742 Set argument list to give program being debugged when it is started."), _("\
2743 Show argument list to give program being debugged when it is started."), _("\
2744 Follow this command with any number of args, to be passed to the program."),
2747 &setlist
, &showlist
);
2749 c
= add_cmd ("environment", no_class
, environment_info
, _("\
2750 The environment to give the program, or one variable's value.\n\
2751 With an argument VAR, prints the value of environment variable VAR to\n\
2752 give the program being debugged. With no arguments, prints the entire\n\
2753 environment to be given to the program."), &showlist
);
2754 set_cmd_completer (c
, noop_completer
);
2756 add_prefix_cmd ("unset", no_class
, unset_command
,
2757 _("Complement to certain \"set\" commands."),
2758 &unsetlist
, "unset ", 0, &cmdlist
);
2760 c
= add_cmd ("environment", class_run
, unset_environment_command
, _("\
2761 Cancel environment variable VAR for the program.\n\
2762 This does not affect the program until the next \"run\" command."),
2764 set_cmd_completer (c
, noop_completer
);
2766 c
= add_cmd ("environment", class_run
, set_environment_command
, _("\
2767 Set environment variable value to give the program.\n\
2768 Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\
2769 VALUES of environment variables are uninterpreted strings.\n\
2770 This does not affect the program until the next \"run\" command."),
2772 set_cmd_completer (c
, noop_completer
);
2774 c
= add_com ("path", class_files
, path_command
, _("\
2775 Add directory DIR(s) to beginning of search path for object files.\n\
2776 $cwd in the path means the current working directory.\n\
2777 This path is equivalent to the $PATH shell variable. It is a list of\n\
2778 directories, separated by colons. These directories are searched to find\n\
2779 fully linked executable files and separately compiled object files as needed."));
2780 set_cmd_completer (c
, filename_completer
);
2782 c
= add_cmd ("paths", no_class
, path_info
, _("\
2783 Current search path for finding object files.\n\
2784 $cwd in the path means the current working directory.\n\
2785 This path is equivalent to the $PATH shell variable. It is a list of\n\
2786 directories, separated by colons. These directories are searched to find\n\
2787 fully linked executable files and separately compiled object files as needed."),
2789 set_cmd_completer (c
, noop_completer
);
2791 add_prefix_cmd ("kill", class_run
, kill_command
,
2792 _("Kill execution of program being debugged."),
2793 &killlist
, "kill ", 0, &cmdlist
);
2795 add_com ("attach", class_run
, attach_command
, _("\
2796 Attach to a process or file outside of GDB.\n\
2797 This command attaches to another target, of the same type as your last\n\
2798 \"target\" command (\"info files\" will show your target stack).\n\
2799 The command may take as argument a process id or a device file.\n\
2800 For a process id, you must have permission to send the process a signal,\n\
2801 and it must have the same effective uid as the debugger.\n\
2802 When using \"attach\" with a process id, the debugger finds the\n\
2803 program running in the process, looking first in the current working\n\
2804 directory, or (if not found there) using the source file search path\n\
2805 (see the \"directory\" command). You can also use the \"file\" command\n\
2806 to specify the program, and to load its symbol table."));
2808 add_prefix_cmd ("detach", class_run
, detach_command
, _("\
2809 Detach a process or file previously attached.\n\
2810 If a process, it is no longer traced, and it continues its execution. If\n\
2811 you were debugging a file, the file is closed and gdb no longer accesses it."),
2812 &detachlist
, "detach ", 0, &cmdlist
);
2814 add_com ("disconnect", class_run
, disconnect_command
, _("\
2815 Disconnect from a target.\n\
2816 The target will wait for another debugger to connect. Not available for\n\
2819 add_com ("signal", class_run
, signal_command
, _("\
2820 Continue program giving it signal specified by the argument.\n\
2821 An argument of \"0\" means continue program without giving it a signal."));
2823 add_com ("stepi", class_run
, stepi_command
, _("\
2824 Step one instruction exactly.\n\
2825 Argument N means do this N times (or till program stops for another reason)."));
2826 add_com_alias ("si", "stepi", class_alias
, 0);
2828 add_com ("nexti", class_run
, nexti_command
, _("\
2829 Step one instruction, but proceed through subroutine calls.\n\
2830 Argument N means do this N times (or till program stops for another reason)."));
2831 add_com_alias ("ni", "nexti", class_alias
, 0);
2833 add_com ("finish", class_run
, finish_command
, _("\
2834 Execute until selected stack frame returns.\n\
2835 Upon return, the value returned is printed and put in the value history."));
2836 add_com_alias ("fin", "finish", class_run
, 1);
2838 add_com ("next", class_run
, next_command
, _("\
2839 Step program, proceeding through subroutine calls.\n\
2840 Like the \"step\" command as long as subroutine calls do not happen;\n\
2841 when they do, the call is treated as one instruction.\n\
2842 Argument N means do this N times (or till program stops for another reason)."));
2843 add_com_alias ("n", "next", class_run
, 1);
2845 add_com_alias ("S", "next", class_run
, 1);
2847 add_com ("step", class_run
, step_command
, _("\
2848 Step program until it reaches a different source line.\n\
2849 Argument N means do this N times (or till program stops for another reason)."));
2850 add_com_alias ("s", "step", class_run
, 1);
2852 c
= add_com ("until", class_run
, until_command
, _("\
2853 Execute until the program reaches a source line greater than the current\n\
2854 or a specified location (same args as break command) within the current frame."));
2855 set_cmd_completer (c
, location_completer
);
2856 add_com_alias ("u", "until", class_run
, 1);
2858 c
= add_com ("advance", class_run
, advance_command
, _("\
2859 Continue the program up to the given location (same form as args for break command).\n\
2860 Execution will also stop upon exit from the current stack frame."));
2861 set_cmd_completer (c
, location_completer
);
2863 c
= add_com ("jump", class_run
, jump_command
, _("\
2864 Continue program being debugged at specified line or address.\n\
2865 Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\
2866 for an address to start at."));
2867 set_cmd_completer (c
, location_completer
);
2871 c
= add_com ("go", class_run
, go_command
, _("\
2872 Usage: go <location>\n\
2873 Continue program being debugged, stopping at specified line or \n\
2875 Give as argument either LINENUM or *ADDR, where ADDR is an \n\
2876 expression for an address to start at.\n\
2877 This command is a combination of tbreak and jump."));
2878 set_cmd_completer (c
, location_completer
);
2882 add_com_alias ("g", "go", class_run
, 1);
2884 c
= add_com ("continue", class_run
, continue_command
, _("\
2885 Continue program being debugged, after signal or breakpoint.\n\
2886 If proceeding from breakpoint, a number N may be used as an argument,\n\
2887 which means to set the ignore count of that breakpoint to N - 1 (so that\n\
2888 the breakpoint won't break until the Nth time it is reached).\n\
2890 If non-stop mode is enabled, continue only the current thread,\n\
2891 otherwise all the threads in the program are continued. To \n\
2892 continue all stopped threads in non-stop mode, use the -a option.\n\
2893 Specifying -a and an ignore count simultaneously is an error."));
2894 add_com_alias ("c", "cont", class_run
, 1);
2895 add_com_alias ("fg", "cont", class_run
, 1);
2897 c
= add_com ("run", class_run
, run_command
, _("\
2898 Start debugged program. You may specify arguments to give it.\n\
2899 Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\
2900 Input and output redirection with \">\", \"<\", or \">>\" are also allowed.\n\n\
2901 With no arguments, uses arguments last specified (with \"run\" or \"set args\").\n\
2902 To cancel previous arguments and run with no arguments,\n\
2903 use \"set args\" without arguments."));
2904 set_cmd_completer (c
, filename_completer
);
2905 add_com_alias ("r", "run", class_run
, 1);
2907 add_com ("R", class_run
, run_no_args_command
,
2908 _("Start debugged program with no arguments."));
2910 c
= add_com ("start", class_run
, start_command
, _("\
2911 Run the debugged program until the beginning of the main procedure.\n\
2912 You may specify arguments to give to your program, just as with the\n\
2913 \"run\" command."));
2914 set_cmd_completer (c
, filename_completer
);
2916 c
= add_com ("interrupt", class_run
, interrupt_target_command
,
2917 _("Interrupt the execution of the debugged program.\n\
2918 If non-stop mode is enabled, interrupt only the current thread,\n\
2919 otherwise all the threads in the program are stopped. To \n\
2920 interrupt all running threads in non-stop mode, use the -a option."));
2922 add_info ("registers", nofp_registers_info
, _("\
2923 List of integer registers and their contents, for selected stack frame.\n\
2924 Register name as argument means describe only that register."));
2925 add_info_alias ("r", "registers", 1);
2928 add_com ("lr", class_info
, nofp_registers_info
, _("\
2929 List of integer registers and their contents, for selected stack frame.\n\
2930 Register name as argument means describe only that register."));
2931 add_info ("all-registers", all_registers_info
, _("\
2932 List of all registers and their contents, for selected stack frame.\n\
2933 Register name as argument means describe only that register."));
2935 add_info ("program", program_info
,
2936 _("Execution status of the program."));
2938 add_info ("float", float_info
,
2939 _("Print the status of the floating point unit\n"));
2941 add_info ("vector", vector_info
,
2942 _("Print the status of the vector unit\n"));