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 const unsigned solib_add_generation
425 = current_program_space
->solib_add_generation
;
427 /* Create the hooks to handle shared library load and unload
429 #ifdef SOLIB_CREATE_INFERIOR_HOOK
430 SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid
));
432 solib_create_inferior_hook (from_tty
);
435 if (current_program_space
->solib_add_generation
== solib_add_generation
)
437 /* The platform-specific hook should load initial shared libraries,
438 but didn't. FROM_TTY will be incorrectly 0 but such solib
439 targets should be fixed anyway. Call it only after the solib
440 target has been initialized by solib_create_inferior_hook. */
443 warning (_("platform-specific solib_create_inferior_hook did "
444 "not load initial shared libraries."));
446 /* If the solist is global across processes, there's no need to
448 if (!gdbarch_has_global_solist (target_gdbarch
))
451 SOLIB_ADD (NULL
, 0, target
, auto_solib_add
);
453 solib_add (NULL
, 0, target
, auto_solib_add
);
459 /* If the user sets watchpoints before execution having started,
460 then she gets software watchpoints, because GDB can't know which
461 target will end up being pushed, or if it supports hardware
462 watchpoints or not. breakpoint_re_set takes care of promoting
463 watchpoints to hardware watchpoints if possible, however, if this
464 new inferior doesn't load shared libraries or we don't pull in
465 symbols from any other source on this target/arch,
466 breakpoint_re_set is never called. Call it now so that software
467 watchpoints get a chance to be promoted to hardware watchpoints
468 if the now pushed target supports hardware watchpoints. */
469 breakpoint_re_set ();
471 observer_notify_inferior_created (target
, from_tty
);
474 /* Kill the inferior if already running. This function is designed
475 to be called when we are about to start the execution of the program
476 from the beginning. Ask the user to confirm that he wants to restart
477 the program being debugged when FROM_TTY is non-null. */
480 kill_if_already_running (int from_tty
)
482 if (! ptid_equal (inferior_ptid
, null_ptid
) && target_has_execution
)
484 /* Bail out before killing the program if we will not be able to
486 target_require_runnable ();
489 && !query (_("The program being debugged has been started already.\n\
490 Start it from the beginning? ")))
491 error (_("Program not restarted."));
496 /* Implement the "run" command. If TBREAK_AT_MAIN is set, then insert
497 a temporary breakpoint at the begining of the main program before
498 running the program. */
501 run_command_1 (char *args
, int from_tty
, int tbreak_at_main
)
504 struct cleanup
*old_chain
;
509 kill_if_already_running (from_tty
);
511 init_wait_for_inferior ();
512 clear_breakpoint_hit_counts ();
514 /* Clean up any leftovers from other runs. Some other things from
515 this function should probably be moved into target_pre_inferior. */
516 target_pre_inferior (from_tty
);
518 /* The comment here used to read, "The exec file is re-read every
519 time we do a generic_mourn_inferior, so we just have to worry
520 about the symbol file." The `generic_mourn_inferior' function
521 gets called whenever the program exits. However, suppose the
522 program exits, and *then* the executable file changes? We need
523 to check again here. Since reopen_exec_file doesn't do anything
524 if the timestamp hasn't changed, I don't see the harm. */
528 /* Insert the temporary breakpoint if a location was specified. */
530 tbreak_command (main_name (), 0);
532 exec_file
= (char *) get_exec_file (0);
534 if (non_stop
&& !target_supports_non_stop ())
535 error (_("The target does not support running in non-stop mode."));
537 /* We keep symbols from add-symbol-file, on the grounds that the
538 user might want to add some symbols before running the program
539 (right?). But sometimes (dynamic loading where the user manually
540 introduces the new symbols with add-symbol-file), the code which
541 the symbols describe does not persist between runs. Currently
542 the user has to manually nuke all symbols between runs if they
543 want them to go away (PR 2207). This is probably reasonable. */
547 if (target_can_async_p ())
548 async_disable_stdin ();
552 int async_exec
= strip_bg_char (&args
);
554 /* If we get a request for running in the bg but the target
555 doesn't support it, error out. */
556 if (async_exec
&& !target_can_async_p ())
557 error (_("Asynchronous execution not supported on this target."));
559 /* If we don't get a request of running in the bg, then we need
560 to simulate synchronous (fg) execution. */
561 if (!async_exec
&& target_can_async_p ())
563 /* Simulate synchronous execution. */
564 async_disable_stdin ();
567 /* If there were other args, beside '&', process them. */
569 set_inferior_args (args
);
574 ui_out_field_string (uiout
, NULL
, "Starting program");
575 ui_out_text (uiout
, ": ");
577 ui_out_field_string (uiout
, "execfile", exec_file
);
578 ui_out_spaces (uiout
, 1);
579 /* We call get_inferior_args() because we might need to compute
581 ui_out_field_string (uiout
, "infargs", get_inferior_args ());
582 ui_out_text (uiout
, "\n");
583 ui_out_flush (uiout
);
586 /* We call get_inferior_args() because we might need to compute
588 target_create_inferior (exec_file
, get_inferior_args (),
589 environ_vector (current_inferior ()->environment
),
592 /* We're starting off a new process. When we get out of here, in
593 non-stop mode, finish the state of all threads of that process,
594 but leave other threads alone, as they may be stopped in internal
595 events --- the frontend shouldn't see them as stopped. In
596 all-stop, always finish the state of all threads, as we may be
597 resuming more than just the new process. */
599 ptid
= pid_to_ptid (ptid_get_pid (inferior_ptid
));
601 ptid
= minus_one_ptid
;
602 old_chain
= make_cleanup (finish_thread_state_cleanup
, &ptid
);
604 /* Pass zero for FROM_TTY, because at this point the "run" command
605 has done its thing; now we are setting up the running program. */
606 post_create_inferior (¤t_target
, 0);
608 /* Start the target running. Do not use -1 continuation as it would skip
609 breakpoint right at the entry point. */
610 proceed (regcache_read_pc (get_current_regcache ()), TARGET_SIGNAL_0
, 0);
612 /* Since there was no error, there's no need to finish the thread
614 discard_cleanups (old_chain
);
618 run_command (char *args
, int from_tty
)
620 run_command_1 (args
, from_tty
, 0);
624 run_no_args_command (char *args
, int from_tty
)
626 set_inferior_args ("");
630 /* Start the execution of the program up until the beginning of the main
634 start_command (char *args
, int from_tty
)
636 /* Some languages such as Ada need to search inside the program
637 minimal symbols for the location where to put the temporary
638 breakpoint before starting. */
639 if (!have_minimal_symbols ())
640 error (_("No symbol table loaded. Use the \"file\" command."));
642 /* Run the program until reaching the main procedure... */
643 run_command_1 (args
, from_tty
, 1);
647 proceed_thread_callback (struct thread_info
*thread
, void *arg
)
649 /* We go through all threads individually instead of compressing
650 into a single target `resume_all' request, because some threads
651 may be stopped in internal breakpoints/events, or stopped waiting
652 for its turn in the displaced stepping queue (that is, they are
653 running && !executing). The target side has no idea about why
654 the thread is stopped, so a `resume_all' command would resume too
655 much. If/when GDB gains a way to tell the target `hold this
656 thread stopped until I say otherwise', then we can optimize
658 if (!is_stopped (thread
->ptid
))
661 switch_to_thread (thread
->ptid
);
662 clear_proceed_status ();
663 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
668 ensure_valid_thread (void)
670 if (ptid_equal (inferior_ptid
, null_ptid
)
671 || is_exited (inferior_ptid
))
672 error (_("Cannot execute this command without a live selected thread."));
675 /* If the user is looking at trace frames, any resumption of execution
676 is likely to mix up recorded and live target data. So simply
677 disallow those commands. */
680 ensure_not_tfind_mode (void)
682 if (get_traceframe_number () >= 0)
683 error (_("Cannot execute this command while looking at trace frames."));
687 continue_1 (int all_threads
)
690 ensure_not_tfind_mode ();
692 if (non_stop
&& all_threads
)
694 /* Don't error out if the current thread is running, because
695 there may be other stopped threads. */
696 struct cleanup
*old_chain
;
698 /* Backup current thread and selected frame. */
699 old_chain
= make_cleanup_restore_current_thread ();
701 iterate_over_threads (proceed_thread_callback
, NULL
);
703 /* Restore selected ptid. */
704 do_cleanups (old_chain
);
708 ensure_valid_thread ();
709 ensure_not_running ();
710 clear_proceed_status ();
711 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
715 /* continue [-a] [proceed-count] [&] */
717 continue_command (char *args
, int from_tty
)
723 /* Find out whether we must run in the background. */
725 async_exec
= strip_bg_char (&args
);
727 /* If we must run in the background, but the target can't do it,
729 if (async_exec
&& !target_can_async_p ())
730 error (_("Asynchronous execution not supported on this target."));
732 /* If we are not asked to run in the bg, then prepare to run in the
733 foreground, synchronously. */
734 if (!async_exec
&& target_can_async_p ())
736 /* Simulate synchronous execution. */
737 async_disable_stdin ();
742 if (strncmp (args
, "-a", sizeof ("-a") - 1) == 0)
745 args
+= sizeof ("-a") - 1;
751 if (!non_stop
&& all_threads
)
752 error (_("`-a' is meaningless in all-stop mode."));
754 if (args
!= NULL
&& all_threads
)
755 error (_("Can't resume all threads and specify "
756 "proceed count simultaneously."));
758 /* If we have an argument left, set proceed count of breakpoint we
765 struct thread_info
*tp
;
768 tp
= find_thread_ptid (inferior_ptid
);
772 struct target_waitstatus ws
;
774 get_last_target_status (&last_ptid
, &ws
);
775 tp
= find_thread_ptid (last_ptid
);
778 bs
= tp
->control
.stop_bpstat
;
780 while ((stat
= bpstat_num (&bs
, &num
)) != 0)
783 set_ignore_count (num
,
784 parse_and_eval_long (args
) - 1,
786 /* set_ignore_count prints a message ending with a period.
787 So print two spaces before "Continuing.". */
789 printf_filtered (" ");
793 if (!stopped
&& from_tty
)
796 ("Not stopped at any breakpoint; argument ignored.\n");
801 printf_filtered (_("Continuing.\n"));
803 continue_1 (all_threads
);
806 /* Record the starting point of a "step" or "next" command. */
809 set_step_frame (void)
811 struct symtab_and_line sal
;
813 find_frame_sal (get_current_frame (), &sal
);
814 set_step_info (get_current_frame (), sal
);
817 /* Step until outside of current statement. */
820 step_command (char *count_string
, int from_tty
)
822 step_1 (0, 0, count_string
);
825 /* Likewise, but skip over subroutine calls as if single instructions. */
828 next_command (char *count_string
, int from_tty
)
830 step_1 (1, 0, count_string
);
833 /* Likewise, but step only one instruction. */
836 stepi_command (char *count_string
, int from_tty
)
838 step_1 (0, 1, count_string
);
842 nexti_command (char *count_string
, int from_tty
)
844 step_1 (1, 1, count_string
);
848 delete_longjmp_breakpoint_cleanup (void *arg
)
850 int thread
= * (int *) arg
;
851 delete_longjmp_breakpoint (thread
);
855 step_1 (int skip_subroutines
, int single_inst
, char *count_string
)
858 struct cleanup
*cleanups
= make_cleanup (null_cleanup
, NULL
);
863 ensure_not_tfind_mode ();
864 ensure_valid_thread ();
865 ensure_not_running ();
868 async_exec
= strip_bg_char (&count_string
);
870 /* If we get a request for running in the bg but the target
871 doesn't support it, error out. */
872 if (async_exec
&& !target_can_async_p ())
873 error (_("Asynchronous execution not supported on this target."));
875 /* If we don't get a request of running in the bg, then we need
876 to simulate synchronous (fg) execution. */
877 if (!async_exec
&& target_can_async_p ())
879 /* Simulate synchronous execution. */
880 async_disable_stdin ();
883 count
= count_string
? parse_and_eval_long (count_string
) : 1;
885 if (!single_inst
|| skip_subroutines
) /* Leave si command alone. */
887 struct thread_info
*tp
= inferior_thread ();
889 if (in_thread_list (inferior_ptid
))
890 thread
= pid_to_thread_id (inferior_ptid
);
892 set_longjmp_breakpoint (tp
, get_frame_id (get_current_frame ()));
894 make_cleanup (delete_longjmp_breakpoint_cleanup
, &thread
);
897 /* In synchronous case, all is well; each step_once call will step once. */
898 if (!target_can_async_p ())
900 for (; count
> 0; count
--)
902 step_once (skip_subroutines
, single_inst
, count
, thread
);
904 if (!target_has_execution
)
908 struct thread_info
*tp
= inferior_thread ();
910 if (!tp
->control
.stop_step
|| !tp
->step_multi
)
912 /* If we stopped for some reason that is not stepping
913 there are no further steps to make. */
920 do_cleanups (cleanups
);
924 /* In the case of an asynchronous target things get complicated;
925 do only one step for now, before returning control to the
926 event loop. Let the continuation figure out how many other
927 steps we need to do, and handle them one at the time, through
929 step_once (skip_subroutines
, single_inst
, count
, thread
);
931 /* We are running, and the continuation is installed. It will
932 disable the longjmp breakpoint as appropriate. */
933 discard_cleanups (cleanups
);
937 struct step_1_continuation_args
940 int skip_subroutines
;
945 /* Called after we are done with one step operation, to check whether
946 we need to step again, before we print the prompt and return control
947 to the user. If count is > 1, we will need to do one more call to
948 proceed(), via step_once(). Basically it is like step_once and
949 step_1_continuation are co-recursive. */
951 step_1_continuation (void *args
, int err
)
953 struct step_1_continuation_args
*a
= args
;
955 if (target_has_execution
)
957 struct thread_info
*tp
;
959 tp
= inferior_thread ();
961 && tp
->step_multi
&& tp
->control
.stop_step
)
963 /* There are more steps to make, and we did stop due to
964 ending a stepping range. Do another step. */
965 step_once (a
->skip_subroutines
, a
->single_inst
,
966 a
->count
- 1, a
->thread
);
972 /* We either hit an error, or stopped for some reason that is
973 not stepping, or there are no further steps to make.
975 if (!a
->single_inst
|| a
->skip_subroutines
)
976 delete_longjmp_breakpoint (a
->thread
);
979 /* Do just one step operation. This is useful to implement the 'step
980 n' kind of commands. In case of asynchronous targets, we will have
981 to set up a continuation to be done after the target stops (after
982 this one step). For synch targets, the caller handles further
986 step_once (int skip_subroutines
, int single_inst
, int count
, int thread
)
988 struct frame_info
*frame
= get_current_frame ();
992 /* Don't assume THREAD is a valid thread id. It is set to -1 if
993 the longjmp breakpoint was not required. Use the
994 INFERIOR_PTID thread instead, which is the same thread when
996 struct thread_info
*tp
= inferior_thread ();
998 clear_proceed_status ();
1005 /* Step at an inlined function behaves like "down". */
1006 if (!skip_subroutines
&& !single_inst
1007 && inline_skipped_frames (inferior_ptid
))
1011 /* Pretend that we've ran. */
1012 resume_ptid
= user_visible_resume_ptid (1);
1013 set_running (resume_ptid
, 1);
1015 step_into_inline_frame (inferior_ptid
);
1017 step_once (skip_subroutines
, single_inst
, count
- 1, thread
);
1020 /* Pretend that we've stopped. */
1023 if (target_can_async_p ())
1024 inferior_event_handler (INF_EXEC_COMPLETE
, NULL
);
1029 pc
= get_frame_pc (frame
);
1030 find_pc_line_pc_range (pc
,
1031 &tp
->control
.step_range_start
,
1032 &tp
->control
.step_range_end
);
1034 /* If we have no line info, switch to stepi mode. */
1035 if (tp
->control
.step_range_end
== 0 && step_stop_if_no_debug
)
1036 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1037 else if (tp
->control
.step_range_end
== 0)
1041 if (find_pc_partial_function (pc
, &name
,
1042 &tp
->control
.step_range_start
,
1043 &tp
->control
.step_range_end
) == 0)
1044 error (_("Cannot find bounds of current function"));
1046 target_terminal_ours ();
1047 printf_filtered (_("Single stepping until exit from function %s,"
1048 "\nwhich has no line number information.\n"),
1054 /* Say we are stepping, but stop after one insn whatever it does. */
1055 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1056 if (!skip_subroutines
)
1058 Don't step over function calls, not even to functions lacking
1060 tp
->control
.step_over_calls
= STEP_OVER_NONE
;
1063 if (skip_subroutines
)
1064 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1066 tp
->step_multi
= (count
> 1);
1067 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
1069 /* For async targets, register a continuation to do any
1070 additional steps. For sync targets, the caller will handle
1071 further stepping. */
1072 if (target_can_async_p ())
1074 struct step_1_continuation_args
*args
;
1076 args
= xmalloc (sizeof (*args
));
1077 args
->skip_subroutines
= skip_subroutines
;
1078 args
->single_inst
= single_inst
;
1079 args
->count
= count
;
1080 args
->thread
= thread
;
1082 add_intermediate_continuation (tp
, step_1_continuation
, args
, xfree
);
1088 /* Continue program at specified address. */
1091 jump_command (char *arg
, int from_tty
)
1093 struct gdbarch
*gdbarch
= get_current_arch ();
1095 struct symtabs_and_lines sals
;
1096 struct symtab_and_line sal
;
1102 ensure_not_tfind_mode ();
1103 ensure_valid_thread ();
1104 ensure_not_running ();
1106 /* Find out whether we must run in the background. */
1108 async_exec
= strip_bg_char (&arg
);
1110 /* If we must run in the background, but the target can't do it,
1112 if (async_exec
&& !target_can_async_p ())
1113 error (_("Asynchronous execution not supported on this target."));
1116 error_no_arg (_("starting address"));
1118 sals
= decode_line_spec_1 (arg
, 1);
1119 if (sals
.nelts
!= 1)
1121 error (_("Unreasonable jump request"));
1127 if (sal
.symtab
== 0 && sal
.pc
== 0)
1128 error (_("No source file has been specified."));
1130 resolve_sal_pc (&sal
); /* May error out. */
1132 /* See if we are trying to jump to another function. */
1133 fn
= get_frame_function (get_current_frame ());
1134 sfn
= find_pc_function (sal
.pc
);
1135 if (fn
!= NULL
&& sfn
!= fn
)
1137 if (!query (_("Line %d is not in `%s'. Jump anyway? "), sal
.line
,
1138 SYMBOL_PRINT_NAME (fn
)))
1140 error (_("Not confirmed."));
1147 fixup_symbol_section (sfn
, 0);
1148 if (section_is_overlay (SYMBOL_OBJ_SECTION (sfn
)) &&
1149 !section_is_mapped (SYMBOL_OBJ_SECTION (sfn
)))
1151 if (!query (_("WARNING!!! Destination is in "
1152 "unmapped overlay! Jump anyway? ")))
1154 error (_("Not confirmed."));
1164 printf_filtered (_("Continuing at "));
1165 fputs_filtered (paddress (gdbarch
, addr
), gdb_stdout
);
1166 printf_filtered (".\n");
1169 /* If we are not asked to run in the bg, then prepare to run in the
1170 foreground, synchronously. */
1171 if (!async_exec
&& target_can_async_p ())
1173 /* Simulate synchronous execution. */
1174 async_disable_stdin ();
1177 clear_proceed_status ();
1178 proceed (addr
, TARGET_SIGNAL_0
, 0);
1182 /* Go to line or address in current procedure. */
1184 go_command (char *line_no
, int from_tty
)
1186 if (line_no
== (char *) NULL
|| !*line_no
)
1187 printf_filtered (_("Usage: go <location>\n"));
1190 tbreak_command (line_no
, from_tty
);
1191 jump_command (line_no
, from_tty
);
1196 /* Continue program giving it specified signal. */
1199 signal_command (char *signum_exp
, int from_tty
)
1201 enum target_signal oursig
;
1204 dont_repeat (); /* Too dangerous. */
1206 ensure_not_tfind_mode ();
1207 ensure_valid_thread ();
1208 ensure_not_running ();
1210 /* Find out whether we must run in the background. */
1211 if (signum_exp
!= NULL
)
1212 async_exec
= strip_bg_char (&signum_exp
);
1214 /* If we must run in the background, but the target can't do it,
1216 if (async_exec
&& !target_can_async_p ())
1217 error (_("Asynchronous execution not supported on this target."));
1219 /* If we are not asked to run in the bg, then prepare to run in the
1220 foreground, synchronously. */
1221 if (!async_exec
&& target_can_async_p ())
1223 /* Simulate synchronous execution. */
1224 async_disable_stdin ();
1228 error_no_arg (_("signal number"));
1230 /* It would be even slicker to make signal names be valid expressions,
1231 (the type could be "enum $signal" or some such), then the user could
1232 assign them to convenience variables. */
1233 oursig
= target_signal_from_name (signum_exp
);
1235 if (oursig
== TARGET_SIGNAL_UNKNOWN
)
1237 /* No, try numeric. */
1238 int num
= parse_and_eval_long (signum_exp
);
1241 oursig
= TARGET_SIGNAL_0
;
1243 oursig
= target_signal_from_command (num
);
1248 if (oursig
== TARGET_SIGNAL_0
)
1249 printf_filtered (_("Continuing with no signal.\n"));
1251 printf_filtered (_("Continuing with signal %s.\n"),
1252 target_signal_to_name (oursig
));
1255 clear_proceed_status ();
1256 proceed ((CORE_ADDR
) -1, oursig
, 0);
1259 /* Continuation args to be passed to the "until" command
1261 struct until_next_continuation_args
1263 /* The thread that was current when the command was executed. */
1267 /* A continuation callback for until_next_command. */
1270 until_next_continuation (void *arg
, int err
)
1272 struct until_next_continuation_args
*a
= arg
;
1274 delete_longjmp_breakpoint (a
->thread
);
1277 /* Proceed until we reach a different source line with pc greater than
1278 our current one or exit the function. We skip calls in both cases.
1280 Note that eventually this command should probably be changed so
1281 that only source lines are printed out when we hit the breakpoint
1282 we set. This may involve changes to wait_for_inferior and the
1283 proceed status code. */
1286 until_next_command (int from_tty
)
1288 struct frame_info
*frame
;
1290 struct symbol
*func
;
1291 struct symtab_and_line sal
;
1292 struct thread_info
*tp
= inferior_thread ();
1293 int thread
= tp
->num
;
1294 struct cleanup
*old_chain
;
1296 clear_proceed_status ();
1299 frame
= get_current_frame ();
1301 /* Step until either exited from this function or greater
1302 than the current line (if in symbolic section) or pc (if
1305 pc
= get_frame_pc (frame
);
1306 func
= find_pc_function (pc
);
1310 struct minimal_symbol
*msymbol
= lookup_minimal_symbol_by_pc (pc
);
1312 if (msymbol
== NULL
)
1313 error (_("Execution is not within a known function."));
1315 tp
->control
.step_range_start
= SYMBOL_VALUE_ADDRESS (msymbol
);
1316 tp
->control
.step_range_end
= pc
;
1320 sal
= find_pc_line (pc
, 0);
1322 tp
->control
.step_range_start
= BLOCK_START (SYMBOL_BLOCK_VALUE (func
));
1323 tp
->control
.step_range_end
= sal
.end
;
1326 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1328 tp
->step_multi
= 0; /* Only one call to proceed */
1330 set_longjmp_breakpoint (tp
, get_frame_id (frame
));
1331 old_chain
= make_cleanup (delete_longjmp_breakpoint_cleanup
, &thread
);
1333 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
1335 if (target_can_async_p () && is_running (inferior_ptid
))
1337 struct until_next_continuation_args
*cont_args
;
1339 discard_cleanups (old_chain
);
1340 cont_args
= XNEW (struct until_next_continuation_args
);
1341 cont_args
->thread
= inferior_thread ()->num
;
1343 add_continuation (tp
, until_next_continuation
, cont_args
, xfree
);
1346 do_cleanups (old_chain
);
1350 until_command (char *arg
, int from_tty
)
1355 ensure_not_tfind_mode ();
1356 ensure_valid_thread ();
1357 ensure_not_running ();
1359 /* Find out whether we must run in the background. */
1361 async_exec
= strip_bg_char (&arg
);
1363 /* If we must run in the background, but the target can't do it,
1365 if (async_exec
&& !target_can_async_p ())
1366 error (_("Asynchronous execution not supported on this target."));
1368 /* If we are not asked to run in the bg, then prepare to run in the
1369 foreground, synchronously. */
1370 if (!async_exec
&& target_can_async_p ())
1372 /* Simulate synchronous execution. */
1373 async_disable_stdin ();
1377 until_break_command (arg
, from_tty
, 0);
1379 until_next_command (from_tty
);
1383 advance_command (char *arg
, int from_tty
)
1388 ensure_not_tfind_mode ();
1389 ensure_valid_thread ();
1390 ensure_not_running ();
1393 error_no_arg (_("a location"));
1395 /* Find out whether we must run in the background. */
1397 async_exec
= strip_bg_char (&arg
);
1399 /* If we must run in the background, but the target can't do it,
1401 if (async_exec
&& !target_can_async_p ())
1402 error (_("Asynchronous execution not supported on this target."));
1404 /* If we are not asked to run in the bg, then prepare to run in the
1405 foreground, synchronously. */
1406 if (!async_exec
&& target_can_async_p ())
1408 /* Simulate synchronous execution. */
1409 async_disable_stdin ();
1412 until_break_command (arg
, from_tty
, 1);
1415 /* Print the result of a function at the end of a 'finish' command. */
1418 print_return_value (struct type
*func_type
, struct type
*value_type
)
1420 struct gdbarch
*gdbarch
= get_regcache_arch (stop_registers
);
1421 struct cleanup
*old_chain
;
1422 struct ui_stream
*stb
;
1423 struct value
*value
;
1425 CHECK_TYPEDEF (value_type
);
1426 gdb_assert (TYPE_CODE (value_type
) != TYPE_CODE_VOID
);
1428 /* FIXME: 2003-09-27: When returning from a nested inferior function
1429 call, it's possible (with no help from the architecture vector)
1430 to locate and return/print a "struct return" value. This is just
1431 a more complicated case of what is already being done in the
1432 inferior function call code. In fact, when inferior function
1433 calls are made async, this will likely be made the norm. */
1435 switch (gdbarch_return_value (gdbarch
, func_type
, value_type
,
1438 case RETURN_VALUE_REGISTER_CONVENTION
:
1439 case RETURN_VALUE_ABI_RETURNS_ADDRESS
:
1440 case RETURN_VALUE_ABI_PRESERVES_ADDRESS
:
1441 value
= allocate_value (value_type
);
1442 gdbarch_return_value (gdbarch
, func_type
, value_type
, stop_registers
,
1443 value_contents_raw (value
), NULL
);
1445 case RETURN_VALUE_STRUCT_CONVENTION
:
1449 internal_error (__FILE__
, __LINE__
, _("bad switch"));
1454 struct value_print_options opts
;
1457 stb
= ui_out_stream_new (uiout
);
1458 old_chain
= make_cleanup_ui_out_stream_delete (stb
);
1459 ui_out_text (uiout
, "Value returned is ");
1460 ui_out_field_fmt (uiout
, "gdb-result-var", "$%d",
1461 record_latest_value (value
));
1462 ui_out_text (uiout
, " = ");
1463 get_raw_print_options (&opts
);
1464 value_print (value
, stb
->stream
, &opts
);
1465 ui_out_field_stream (uiout
, "return-value", stb
);
1466 ui_out_text (uiout
, "\n");
1467 do_cleanups (old_chain
);
1471 ui_out_text (uiout
, "Value returned has type: ");
1472 ui_out_field_string (uiout
, "return-type", TYPE_NAME (value_type
));
1473 ui_out_text (uiout
, ".");
1474 ui_out_text (uiout
, " Cannot determine contents\n");
1478 /* Stuff that needs to be done by the finish command after the target
1479 has stopped. In asynchronous mode, we wait for the target to stop
1480 in the call to poll or select in the event loop, so it is
1481 impossible to do all the stuff as part of the finish_command
1482 function itself. The only chance we have to complete this command
1483 is in fetch_inferior_event, which is called by the event loop as
1484 soon as it detects that the target has stopped. */
1486 struct finish_command_continuation_args
1488 /* The thread that as current when the command was executed. */
1490 struct breakpoint
*breakpoint
;
1491 struct symbol
*function
;
1495 finish_command_continuation (void *arg
, int err
)
1497 struct finish_command_continuation_args
*a
= arg
;
1501 struct thread_info
*tp
= NULL
;
1504 if (!ptid_equal (inferior_ptid
, null_ptid
)
1505 && target_has_execution
1506 && is_stopped (inferior_ptid
))
1508 tp
= inferior_thread ();
1509 bs
= tp
->control
.stop_bpstat
;
1512 if (bpstat_find_breakpoint (bs
, a
->breakpoint
) != NULL
1513 && a
->function
!= NULL
)
1515 struct type
*value_type
;
1517 value_type
= TYPE_TARGET_TYPE (SYMBOL_TYPE (a
->function
));
1519 internal_error (__FILE__
, __LINE__
,
1520 _("finish_command: function has no target type"));
1522 if (TYPE_CODE (value_type
) != TYPE_CODE_VOID
)
1524 volatile struct gdb_exception ex
;
1526 TRY_CATCH (ex
, RETURN_MASK_ALL
)
1528 /* print_return_value can throw an exception in some
1529 circumstances. We need to catch this so that we still
1530 delete the breakpoint. */
1531 print_return_value (SYMBOL_TYPE (a
->function
), value_type
);
1534 exception_print (gdb_stdout
, ex
);
1538 /* We suppress normal call of normal_stop observer and do it
1539 here so that the *stopped notification includes the return
1541 if (bs
!= NULL
&& tp
->control
.proceed_to_finish
)
1542 observer_notify_normal_stop (bs
, 1 /* print frame */);
1545 delete_breakpoint (a
->breakpoint
);
1546 delete_longjmp_breakpoint (a
->thread
);
1550 finish_command_continuation_free_arg (void *arg
)
1555 /* finish_backward -- helper function for finish_command. */
1558 finish_backward (struct symbol
*function
)
1560 struct symtab_and_line sal
;
1561 struct thread_info
*tp
= inferior_thread ();
1563 CORE_ADDR func_addr
;
1565 pc
= get_frame_pc (get_current_frame ());
1567 if (find_pc_partial_function (pc
, NULL
, &func_addr
, NULL
) == 0)
1568 internal_error (__FILE__
, __LINE__
,
1569 _("Finish: couldn't find function."));
1571 sal
= find_pc_line (func_addr
, 0);
1573 tp
->control
.proceed_to_finish
= 1;
1574 /* Special case: if we're sitting at the function entry point,
1575 then all we need to do is take a reverse singlestep. We
1576 don't need to set a breakpoint, and indeed it would do us
1579 Note that this can only happen at frame #0, since there's
1580 no way that a function up the stack can have a return address
1581 that's equal to its entry point. */
1585 struct frame_info
*frame
= get_selected_frame (NULL
);
1586 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
1587 struct symtab_and_line sr_sal
;
1589 /* Set a step-resume at the function's entry point. Once that's
1590 hit, we'll do one more step backwards. */
1593 sr_sal
.pspace
= get_frame_program_space (frame
);
1594 insert_step_resume_breakpoint_at_sal (gdbarch
,
1595 sr_sal
, null_frame_id
);
1597 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
1601 /* We're almost there -- we just need to back up by one more
1603 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1604 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
1608 /* finish_forward -- helper function for finish_command. */
1611 finish_forward (struct symbol
*function
, struct frame_info
*frame
)
1613 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
1614 struct symtab_and_line sal
;
1615 struct thread_info
*tp
= inferior_thread ();
1616 struct breakpoint
*breakpoint
;
1617 struct cleanup
*old_chain
;
1618 struct finish_command_continuation_args
*cargs
;
1619 int thread
= tp
->num
;
1621 sal
= find_pc_line (get_frame_pc (frame
), 0);
1622 sal
.pc
= get_frame_pc (frame
);
1624 breakpoint
= set_momentary_breakpoint (gdbarch
, sal
,
1625 get_stack_frame_id (frame
),
1628 old_chain
= make_cleanup_delete_breakpoint (breakpoint
);
1630 set_longjmp_breakpoint (tp
, get_frame_id (frame
));
1631 make_cleanup (delete_longjmp_breakpoint_cleanup
, &thread
);
1633 /* We want stop_registers, please... */
1634 tp
->control
.proceed_to_finish
= 1;
1635 cargs
= xmalloc (sizeof (*cargs
));
1637 cargs
->thread
= thread
;
1638 cargs
->breakpoint
= breakpoint
;
1639 cargs
->function
= function
;
1640 add_continuation (tp
, finish_command_continuation
, cargs
,
1641 finish_command_continuation_free_arg
);
1642 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
1644 discard_cleanups (old_chain
);
1645 if (!target_can_async_p ())
1646 do_all_continuations (0);
1649 /* "finish": Set a temporary breakpoint at the place the selected
1650 frame will return to, then continue. */
1653 finish_command (char *arg
, int from_tty
)
1655 struct frame_info
*frame
;
1656 struct symbol
*function
;
1661 ensure_not_tfind_mode ();
1662 ensure_valid_thread ();
1663 ensure_not_running ();
1665 /* Find out whether we must run in the background. */
1667 async_exec
= strip_bg_char (&arg
);
1669 /* If we must run in the background, but the target can't do it,
1671 if (async_exec
&& !target_can_async_p ())
1672 error (_("Asynchronous execution not supported on this target."));
1674 /* If we are not asked to run in the bg, then prepare to run in the
1675 foreground, synchronously. */
1676 if (!async_exec
&& target_can_async_p ())
1678 /* Simulate synchronous execution. */
1679 async_disable_stdin ();
1683 error (_("The \"finish\" command does not take any arguments."));
1685 frame
= get_prev_frame (get_selected_frame (_("No selected frame.")));
1687 error (_("\"finish\" not meaningful in the outermost frame."));
1689 clear_proceed_status ();
1691 /* Finishing from an inline frame is completely different. We don't
1692 try to show the "return value" - no way to locate it. So we do
1693 not need a completion. */
1694 if (get_frame_type (get_selected_frame (_("No selected frame.")))
1697 /* Claim we are stepping in the calling frame. An empty step
1698 range means that we will stop once we aren't in a function
1699 called by that frame. We don't use the magic "1" value for
1700 step_range_end, because then infrun will think this is nexti,
1701 and not step over the rest of this inlined function call. */
1702 struct thread_info
*tp
= inferior_thread ();
1703 struct symtab_and_line empty_sal
;
1705 init_sal (&empty_sal
);
1706 set_step_info (frame
, empty_sal
);
1707 tp
->control
.step_range_start
= get_frame_pc (frame
);
1708 tp
->control
.step_range_end
= tp
->control
.step_range_start
;
1709 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1711 /* Print info on the selected frame, including level number but not
1715 printf_filtered (_("Run till exit from "));
1716 print_stack_frame (get_selected_frame (NULL
), 1, LOCATION
);
1719 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
1723 /* Find the function we will return from. */
1725 function
= find_pc_function (get_frame_pc (get_selected_frame (NULL
)));
1727 /* Print info on the selected frame, including level number but not
1731 if (execution_direction
== EXEC_REVERSE
)
1732 printf_filtered (_("Run back to call of "));
1734 printf_filtered (_("Run till exit from "));
1736 print_stack_frame (get_selected_frame (NULL
), 1, LOCATION
);
1739 if (execution_direction
== EXEC_REVERSE
)
1740 finish_backward (function
);
1742 finish_forward (function
, frame
);
1747 program_info (char *args
, int from_tty
)
1751 struct thread_info
*tp
;
1754 if (!target_has_execution
)
1756 printf_filtered (_("The program being debugged is not being run.\n"));
1761 ptid
= inferior_ptid
;
1764 struct target_waitstatus ws
;
1766 get_last_target_status (&ptid
, &ws
);
1769 if (ptid_equal (ptid
, null_ptid
) || is_exited (ptid
))
1770 error (_("Invalid selected thread."));
1771 else if (is_running (ptid
))
1772 error (_("Selected thread is running."));
1774 tp
= find_thread_ptid (ptid
);
1775 bs
= tp
->control
.stop_bpstat
;
1776 stat
= bpstat_num (&bs
, &num
);
1778 target_files_info ();
1779 printf_filtered (_("Program stopped at %s.\n"),
1780 paddress (target_gdbarch
, stop_pc
));
1781 if (tp
->control
.stop_step
)
1782 printf_filtered (_("It stopped after being stepped.\n"));
1785 /* There may be several breakpoints in the same place, so this
1786 isn't as strange as it seems. */
1791 printf_filtered (_("It stopped at a breakpoint "
1792 "that has since been deleted.\n"));
1795 printf_filtered (_("It stopped at breakpoint %d.\n"), num
);
1796 stat
= bpstat_num (&bs
, &num
);
1799 else if (tp
->suspend
.stop_signal
!= TARGET_SIGNAL_0
)
1801 printf_filtered (_("It stopped with signal %s, %s.\n"),
1802 target_signal_to_name (tp
->suspend
.stop_signal
),
1803 target_signal_to_string (tp
->suspend
.stop_signal
));
1808 printf_filtered (_("Type \"info stack\" or \"info "
1809 "registers\" for more information.\n"));
1814 environment_info (char *var
, int from_tty
)
1818 char *val
= get_in_environ (current_inferior ()->environment
, var
);
1822 puts_filtered (var
);
1823 puts_filtered (" = ");
1824 puts_filtered (val
);
1825 puts_filtered ("\n");
1829 puts_filtered ("Environment variable \"");
1830 puts_filtered (var
);
1831 puts_filtered ("\" not defined.\n");
1836 char **vector
= environ_vector (current_inferior ()->environment
);
1840 puts_filtered (*vector
++);
1841 puts_filtered ("\n");
1847 set_environment_command (char *arg
, int from_tty
)
1849 char *p
, *val
, *var
;
1853 error_no_arg (_("environment variable and value"));
1855 /* Find seperation between variable name and value. */
1856 p
= (char *) strchr (arg
, '=');
1857 val
= (char *) strchr (arg
, ' ');
1859 if (p
!= 0 && val
!= 0)
1861 /* We have both a space and an equals. If the space is before the
1862 equals, walk forward over the spaces til we see a nonspace
1863 (possibly the equals). */
1868 /* Now if the = is after the char following the spaces,
1869 take the char following the spaces. */
1873 else if (val
!= 0 && p
== 0)
1877 error_no_arg (_("environment variable to set"));
1879 if (p
== 0 || p
[1] == 0)
1883 p
= arg
+ strlen (arg
); /* So that savestring below will work. */
1887 /* Not setting variable value to null. */
1889 while (*val
== ' ' || *val
== '\t')
1893 while (p
!= arg
&& (p
[-1] == ' ' || p
[-1] == '\t'))
1896 var
= savestring (arg
, p
- arg
);
1899 printf_filtered (_("Setting environment variable "
1900 "\"%s\" to null value.\n"),
1902 set_in_environ (current_inferior ()->environment
, var
, "");
1905 set_in_environ (current_inferior ()->environment
, var
, val
);
1910 unset_environment_command (char *var
, int from_tty
)
1914 /* If there is no argument, delete all environment variables.
1915 Ask for confirmation if reading from the terminal. */
1916 if (!from_tty
|| query (_("Delete all environment variables? ")))
1918 free_environ (current_inferior ()->environment
);
1919 current_inferior ()->environment
= make_environ ();
1923 unset_in_environ (current_inferior ()->environment
, var
);
1926 /* Handle the execution path (PATH variable). */
1928 static const char path_var_name
[] = "PATH";
1931 path_info (char *args
, int from_tty
)
1933 puts_filtered ("Executable and object file path: ");
1934 puts_filtered (get_in_environ (current_inferior ()->environment
,
1936 puts_filtered ("\n");
1939 /* Add zero or more directories to the front of the execution path. */
1942 path_command (char *dirname
, int from_tty
)
1948 env
= get_in_environ (current_inferior ()->environment
, path_var_name
);
1949 /* Can be null if path is not set. */
1952 exec_path
= xstrdup (env
);
1953 mod_path (dirname
, &exec_path
);
1954 set_in_environ (current_inferior ()->environment
, path_var_name
, exec_path
);
1957 path_info ((char *) NULL
, from_tty
);
1961 /* Print out the machine register regnum. If regnum is -1, print all
1962 registers (print_all == 1) or all non-float and non-vector
1963 registers (print_all == 0).
1965 For most machines, having all_registers_info() print the
1966 register(s) one per line is good enough. If a different format is
1967 required, (eg, for MIPS or Pyramid 90x, which both have lots of
1968 regs), or there is an existing convention for showing all the
1969 registers, define the architecture method PRINT_REGISTERS_INFO to
1970 provide that format. */
1973 default_print_registers_info (struct gdbarch
*gdbarch
,
1974 struct ui_file
*file
,
1975 struct frame_info
*frame
,
1976 int regnum
, int print_all
)
1979 const int numregs
= gdbarch_num_regs (gdbarch
)
1980 + gdbarch_num_pseudo_regs (gdbarch
);
1982 for (i
= 0; i
< numregs
; i
++)
1984 struct type
*regtype
;
1987 /* Decide between printing all regs, non-float / vector regs, or
1993 if (!gdbarch_register_reggroup_p (gdbarch
, i
, all_reggroup
))
1998 if (!gdbarch_register_reggroup_p (gdbarch
, i
, general_reggroup
))
2008 /* If the register name is empty, it is undefined for this
2009 processor, so don't display anything. */
2010 if (gdbarch_register_name (gdbarch
, i
) == NULL
2011 || *(gdbarch_register_name (gdbarch
, i
)) == '\0')
2014 fputs_filtered (gdbarch_register_name (gdbarch
, i
), file
);
2015 print_spaces_filtered (15 - strlen (gdbarch_register_name
2016 (gdbarch
, i
)), file
);
2018 regtype
= register_type (gdbarch
, i
);
2019 val
= allocate_value (regtype
);
2021 /* Get the data in raw format. */
2022 if (! frame_register_read (frame
, i
, value_contents_raw (val
)))
2024 fprintf_filtered (file
, "*value not available*\n");
2028 /* If virtual format is floating, print it that way, and in raw
2030 if (TYPE_CODE (regtype
) == TYPE_CODE_FLT
2031 || TYPE_CODE (regtype
) == TYPE_CODE_DECFLOAT
)
2034 struct value_print_options opts
;
2035 const gdb_byte
*valaddr
= value_contents_for_printing (val
);
2037 get_user_print_options (&opts
);
2041 value_contents_for_printing (val
),
2042 value_embedded_offset (val
), 0,
2043 file
, 0, val
, &opts
, current_language
);
2045 fprintf_filtered (file
, "\t(raw 0x");
2046 for (j
= 0; j
< register_size (gdbarch
, i
); j
++)
2050 if (gdbarch_byte_order (gdbarch
) == BFD_ENDIAN_BIG
)
2053 idx
= register_size (gdbarch
, i
) - 1 - j
;
2054 fprintf_filtered (file
, "%02x", (unsigned char) valaddr
[idx
]);
2056 fprintf_filtered (file
, ")");
2060 struct value_print_options opts
;
2062 /* Print the register in hex. */
2063 get_formatted_print_options (&opts
, 'x');
2066 value_contents_for_printing (val
),
2067 value_embedded_offset (val
), 0,
2068 file
, 0, val
, &opts
, current_language
);
2069 /* If not a vector register, print it also according to its
2071 if (TYPE_VECTOR (regtype
) == 0)
2073 get_user_print_options (&opts
);
2075 fprintf_filtered (file
, "\t");
2077 value_contents_for_printing (val
),
2078 value_embedded_offset (val
), 0,
2079 file
, 0, val
, &opts
, current_language
);
2083 fprintf_filtered (file
, "\n");
2088 registers_info (char *addr_exp
, int fpregs
)
2090 struct frame_info
*frame
;
2091 struct gdbarch
*gdbarch
;
2093 if (!target_has_registers
)
2094 error (_("The program has no registers now."));
2095 frame
= get_selected_frame (NULL
);
2096 gdbarch
= get_frame_arch (frame
);
2100 gdbarch_print_registers_info (gdbarch
, gdb_stdout
,
2105 while (*addr_exp
!= '\0')
2110 /* Keep skipping leading white space. */
2111 if (isspace ((*addr_exp
)))
2117 /* Discard any leading ``$''. Check that there is something
2118 resembling a register following it. */
2119 if (addr_exp
[0] == '$')
2121 if (isspace ((*addr_exp
)) || (*addr_exp
) == '\0')
2122 error (_("Missing register name"));
2124 /* Find the start/end of this register name/num/group. */
2126 while ((*addr_exp
) != '\0' && !isspace ((*addr_exp
)))
2130 /* Figure out what we've found and display it. */
2132 /* A register name? */
2134 int regnum
= user_reg_map_name_to_regnum (gdbarch
, start
, end
- start
);
2138 /* User registers lie completely outside of the range of
2139 normal registers. Catch them early so that the target
2141 if (regnum
>= gdbarch_num_regs (gdbarch
)
2142 + gdbarch_num_pseudo_regs (gdbarch
))
2144 struct value_print_options opts
;
2145 struct value
*val
= value_of_user_reg (regnum
, frame
);
2147 printf_filtered ("%s: ", start
);
2148 get_formatted_print_options (&opts
, 'x');
2149 val_print_scalar_formatted (check_typedef (value_type (val
)),
2150 value_contents_for_printing (val
),
2151 value_embedded_offset (val
),
2153 &opts
, 0, gdb_stdout
);
2154 printf_filtered ("\n");
2157 gdbarch_print_registers_info (gdbarch
, gdb_stdout
,
2158 frame
, regnum
, fpregs
);
2163 /* A register group? */
2165 struct reggroup
*group
;
2167 for (group
= reggroup_next (gdbarch
, NULL
);
2169 group
= reggroup_next (gdbarch
, group
))
2171 /* Don't bother with a length check. Should the user
2172 enter a short register group name, go with the first
2173 group that matches. */
2174 if (strncmp (start
, reggroup_name (group
), end
- start
) == 0)
2182 regnum
< gdbarch_num_regs (gdbarch
)
2183 + gdbarch_num_pseudo_regs (gdbarch
);
2186 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, group
))
2187 gdbarch_print_registers_info (gdbarch
,
2195 /* Nothing matched. */
2196 error (_("Invalid register `%.*s'"), (int) (end
- start
), start
);
2201 all_registers_info (char *addr_exp
, int from_tty
)
2203 registers_info (addr_exp
, 1);
2207 nofp_registers_info (char *addr_exp
, int from_tty
)
2209 registers_info (addr_exp
, 0);
2213 print_vector_info (struct ui_file
*file
,
2214 struct frame_info
*frame
, const char *args
)
2216 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
2218 if (gdbarch_print_vector_info_p (gdbarch
))
2219 gdbarch_print_vector_info (gdbarch
, file
, frame
, args
);
2223 int printed_something
= 0;
2226 regnum
< gdbarch_num_regs (gdbarch
)
2227 + gdbarch_num_pseudo_regs (gdbarch
);
2230 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, vector_reggroup
))
2232 printed_something
= 1;
2233 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
2236 if (!printed_something
)
2237 fprintf_filtered (file
, "No vector information\n");
2242 vector_info (char *args
, int from_tty
)
2244 if (!target_has_registers
)
2245 error (_("The program has no registers now."));
2247 print_vector_info (gdb_stdout
, get_selected_frame (NULL
), args
);
2250 /* Kill the inferior process. Make us have no inferior. */
2253 kill_command (char *arg
, int from_tty
)
2255 /* FIXME: This should not really be inferior_ptid (or target_has_execution).
2256 It should be a distinct flag that indicates that a target is active, cuz
2257 some targets don't have processes! */
2259 if (ptid_equal (inferior_ptid
, null_ptid
))
2260 error (_("The program is not being run."));
2261 if (!query (_("Kill the program being debugged? ")))
2262 error (_("Not confirmed."));
2265 /* If we still have other inferiors to debug, then don't mess with
2266 with their threads. */
2267 if (!have_inferiors ())
2269 init_thread_list (); /* Destroy thread info. */
2271 /* Killing off the inferior can leave us with a core file. If
2272 so, print the state we are left in. */
2273 if (target_has_stack
)
2275 printf_filtered (_("In %s,\n"), target_longname
);
2276 print_stack_frame (get_selected_frame (NULL
), 1, SRC_AND_LOC
);
2279 bfd_cache_close_all ();
2282 /* Used in `attach&' command. ARG is a point to an integer
2283 representing a process id. Proceed threads of this process iff
2284 they stopped due to debugger request, and when they did, they
2285 reported a clean stop (TARGET_SIGNAL_0). Do not proceed threads
2286 that have been explicitly been told to stop. */
2289 proceed_after_attach_callback (struct thread_info
*thread
,
2292 int pid
= * (int *) arg
;
2294 if (ptid_get_pid (thread
->ptid
) == pid
2295 && !is_exited (thread
->ptid
)
2296 && !is_executing (thread
->ptid
)
2297 && !thread
->stop_requested
2298 && thread
->suspend
.stop_signal
== TARGET_SIGNAL_0
)
2300 switch_to_thread (thread
->ptid
);
2301 clear_proceed_status ();
2302 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
2309 proceed_after_attach (int pid
)
2311 /* Don't error out if the current thread is running, because
2312 there may be other stopped threads. */
2313 struct cleanup
*old_chain
;
2315 /* Backup current thread and selected frame. */
2316 old_chain
= make_cleanup_restore_current_thread ();
2318 iterate_over_threads (proceed_after_attach_callback
, &pid
);
2320 /* Restore selected ptid. */
2321 do_cleanups (old_chain
);
2326 * Should save/restore the tty state since it might be that the
2327 * program to be debugged was started on this tty and it wants
2328 * the tty in some state other than what we want. If it's running
2329 * on another terminal or without a terminal, then saving and
2330 * restoring the tty state is a harmless no-op.
2331 * This only needs to be done if we are attaching to a process.
2334 /* attach_command --
2335 takes a program started up outside of gdb and ``attaches'' to it.
2336 This stops it cold in its tracks and allows us to start debugging it.
2337 and wait for the trace-trap that results from attaching. */
2340 attach_command_post_wait (char *args
, int from_tty
, int async_exec
)
2343 char *full_exec_path
= NULL
;
2344 struct inferior
*inferior
;
2346 inferior
= current_inferior ();
2347 inferior
->control
.stop_soon
= NO_STOP_QUIETLY
;
2349 /* If no exec file is yet known, try to determine it from the
2351 exec_file
= (char *) get_exec_file (0);
2354 exec_file
= target_pid_to_exec_file (PIDGET (inferior_ptid
));
2357 /* It's possible we don't have a full path, but rather just a
2358 filename. Some targets, such as HP-UX, don't provide the
2361 Attempt to qualify the filename against the source path.
2362 (If that fails, we'll just fall back on the original
2363 filename. Not much more we can do...) */
2365 if (!source_full_path_of (exec_file
, &full_exec_path
))
2366 full_exec_path
= xstrdup (exec_file
);
2368 exec_file_attach (full_exec_path
, from_tty
);
2369 symbol_file_add_main (full_exec_path
, from_tty
);
2374 reopen_exec_file ();
2378 /* Take any necessary post-attaching actions for this platform. */
2379 target_post_attach (PIDGET (inferior_ptid
));
2381 post_create_inferior (¤t_target
, from_tty
);
2383 /* Install inferior's terminal modes. */
2384 target_terminal_inferior ();
2388 /* The user requested an `attach&', so be sure to leave threads
2389 that didn't get a signal running. */
2391 /* Immediatelly resume all suspended threads of this inferior,
2392 and this inferior only. This should have no effect on
2393 already running threads. If a thread has been stopped with a
2394 signal, leave it be. */
2396 proceed_after_attach (inferior
->pid
);
2399 if (inferior_thread ()->suspend
.stop_signal
== TARGET_SIGNAL_0
)
2401 clear_proceed_status ();
2402 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
2408 /* The user requested a plain `attach', so be sure to leave
2409 the inferior stopped. */
2411 if (target_can_async_p ())
2412 async_enable_stdin ();
2414 /* At least the current thread is already stopped. */
2416 /* In all-stop, by definition, all threads have to be already
2417 stopped at this point. In non-stop, however, although the
2418 selected thread is stopped, others may still be executing.
2419 Be sure to explicitly stop all threads of the process. This
2420 should have no effect on already stopped threads. */
2422 target_stop (pid_to_ptid (inferior
->pid
));
2424 /* Tell the user/frontend where we're stopped. */
2426 if (deprecated_attach_hook
)
2427 deprecated_attach_hook ();
2431 struct attach_command_continuation_args
2439 attach_command_continuation (void *args
, int err
)
2441 struct attach_command_continuation_args
*a
= args
;
2446 attach_command_post_wait (a
->args
, a
->from_tty
, a
->async_exec
);
2450 attach_command_continuation_free_args (void *args
)
2452 struct attach_command_continuation_args
*a
= args
;
2459 attach_command (char *args
, int from_tty
)
2462 struct cleanup
*back_to
= make_cleanup (null_cleanup
, NULL
);
2464 dont_repeat (); /* Not for the faint of heart */
2466 if (gdbarch_has_global_solist (target_gdbarch
))
2467 /* Don't complain if all processes share the same symbol
2470 else if (target_has_execution
)
2472 if (query (_("A program is being debugged already. Kill it? ")))
2475 error (_("Not killed."));
2478 /* Clean up any leftovers from other runs. Some other things from
2479 this function should probably be moved into target_pre_inferior. */
2480 target_pre_inferior (from_tty
);
2482 if (non_stop
&& !target_supports_non_stop ())
2483 error (_("Cannot attach to this target in non-stop mode"));
2487 async_exec
= strip_bg_char (&args
);
2489 /* If we get a request for running in the bg but the target
2490 doesn't support it, error out. */
2491 if (async_exec
&& !target_can_async_p ())
2492 error (_("Asynchronous execution not supported on this target."));
2495 /* If we don't get a request of running in the bg, then we need
2496 to simulate synchronous (fg) execution. */
2497 if (!async_exec
&& target_can_async_p ())
2499 /* Simulate synchronous execution. */
2500 async_disable_stdin ();
2501 make_cleanup ((make_cleanup_ftype
*)async_enable_stdin
, NULL
);
2504 target_attach (args
, from_tty
);
2506 /* Set up the "saved terminal modes" of the inferior
2507 based on what modes we are starting it with. */
2508 target_terminal_init ();
2510 /* Set up execution context to know that we should return from
2511 wait_for_inferior as soon as the target reports a stop. */
2512 init_wait_for_inferior ();
2513 clear_proceed_status ();
2517 /* If we find that the current thread isn't stopped, explicitly
2518 do so now, because we're going to install breakpoints and
2522 /* The user requested an `attach&'; stop just one thread. */
2523 target_stop (inferior_ptid
);
2525 /* The user requested an `attach', so stop all threads of this
2527 target_stop (pid_to_ptid (ptid_get_pid (inferior_ptid
)));
2530 /* Some system don't generate traps when attaching to inferior.
2531 E.g. Mach 3 or GNU hurd. */
2532 if (!target_attach_no_wait
)
2534 struct inferior
*inferior
= current_inferior ();
2536 /* Careful here. See comments in inferior.h. Basically some
2537 OSes don't ignore SIGSTOPs on continue requests anymore. We
2538 need a way for handle_inferior_event to reset the stop_signal
2539 variable after an attach, and this is what
2540 STOP_QUIETLY_NO_SIGSTOP is for. */
2541 inferior
->control
.stop_soon
= STOP_QUIETLY_NO_SIGSTOP
;
2543 if (target_can_async_p ())
2545 /* sync_execution mode. Wait for stop. */
2546 struct attach_command_continuation_args
*a
;
2548 a
= xmalloc (sizeof (*a
));
2549 a
->args
= xstrdup (args
);
2550 a
->from_tty
= from_tty
;
2551 a
->async_exec
= async_exec
;
2552 add_inferior_continuation (attach_command_continuation
, a
,
2553 attach_command_continuation_free_args
);
2554 discard_cleanups (back_to
);
2558 wait_for_inferior ();
2561 attach_command_post_wait (args
, from_tty
, async_exec
);
2562 discard_cleanups (back_to
);
2565 /* We had just found out that the target was already attached to an
2566 inferior. PTID points at a thread of this new inferior, that is
2567 the most likely to be stopped right now, but not necessarily so.
2568 The new inferior is assumed to be already added to the inferior
2569 list at this point. If LEAVE_RUNNING, then leave the threads of
2570 this inferior running, except those we've explicitly seen reported
2574 notice_new_inferior (ptid_t ptid
, int leave_running
, int from_tty
)
2576 struct cleanup
* old_chain
;
2579 old_chain
= make_cleanup (null_cleanup
, NULL
);
2581 /* If in non-stop, leave threads as running as they were. If
2582 they're stopped for some reason other than us telling it to, the
2583 target reports a signal != TARGET_SIGNAL_0. We don't try to
2584 resume threads with such a stop signal. */
2585 async_exec
= non_stop
;
2587 if (!ptid_equal (inferior_ptid
, null_ptid
))
2588 make_cleanup_restore_current_thread ();
2590 switch_to_thread (ptid
);
2592 /* When we "notice" a new inferior we need to do all the things we
2593 would normally do if we had just attached to it. */
2595 if (is_executing (inferior_ptid
))
2597 struct inferior
*inferior
= current_inferior ();
2599 /* We're going to install breakpoints, and poke at memory,
2600 ensure that the inferior is stopped for a moment while we do
2602 target_stop (inferior_ptid
);
2604 inferior
->control
.stop_soon
= STOP_QUIETLY_REMOTE
;
2606 /* Wait for stop before proceeding. */
2607 if (target_can_async_p ())
2609 struct attach_command_continuation_args
*a
;
2611 a
= xmalloc (sizeof (*a
));
2612 a
->args
= xstrdup ("");
2613 a
->from_tty
= from_tty
;
2614 a
->async_exec
= async_exec
;
2615 add_inferior_continuation (attach_command_continuation
, a
,
2616 attach_command_continuation_free_args
);
2618 do_cleanups (old_chain
);
2622 wait_for_inferior ();
2625 async_exec
= leave_running
;
2626 attach_command_post_wait ("" /* args */, from_tty
, async_exec
);
2628 do_cleanups (old_chain
);
2633 * takes a program previously attached to and detaches it.
2634 * The program resumes execution and will no longer stop
2635 * on signals, etc. We better not have left any breakpoints
2636 * in the program or it'll die when it hits one. For this
2637 * to work, it may be necessary for the process to have been
2638 * previously attached. It *might* work if the program was
2639 * started via the normal ptrace (PTRACE_TRACEME).
2643 detach_command (char *args
, int from_tty
)
2645 dont_repeat (); /* Not for the faint of heart. */
2647 if (ptid_equal (inferior_ptid
, null_ptid
))
2648 error (_("The program is not being run."));
2650 disconnect_tracing (from_tty
);
2652 target_detach (args
, from_tty
);
2654 /* If the solist is global across inferiors, don't clear it when we
2655 detach from a single inferior. */
2656 if (!gdbarch_has_global_solist (target_gdbarch
))
2657 no_shared_libraries (NULL
, from_tty
);
2659 /* If we still have inferiors to debug, then don't mess with their
2661 if (!have_inferiors ())
2662 init_thread_list ();
2664 if (deprecated_detach_hook
)
2665 deprecated_detach_hook ();
2668 /* Disconnect from the current target without resuming it (leaving it
2669 waiting for a debugger).
2671 We'd better not have left any breakpoints in the program or the
2672 next debugger will get confused. Currently only supported for some
2673 remote targets, since the normal attach mechanisms don't work on
2674 stopped processes on some native platforms (e.g. GNU/Linux). */
2677 disconnect_command (char *args
, int from_tty
)
2679 dont_repeat (); /* Not for the faint of heart. */
2680 target_disconnect (args
, from_tty
);
2681 no_shared_libraries (NULL
, from_tty
);
2682 init_thread_list ();
2683 if (deprecated_detach_hook
)
2684 deprecated_detach_hook ();
2688 interrupt_target_1 (int all_threads
)
2693 ptid
= minus_one_ptid
;
2695 ptid
= inferior_ptid
;
2698 /* Tag the thread as having been explicitly requested to stop, so
2699 other parts of gdb know not to resume this thread automatically,
2700 if it was stopped due to an internal event. Limit this to
2701 non-stop mode, as when debugging a multi-threaded application in
2702 all-stop mode, we will only get one stop event --- it's undefined
2703 which thread will report the event. */
2705 set_stop_requested (ptid
, 1);
2708 /* Stop the execution of the target while running in async mode, in
2709 the backgound. In all-stop, stop the whole process. In non-stop
2710 mode, stop the current thread only by default, or stop all threads
2711 if the `-a' switch is used. */
2713 /* interrupt [-a] */
2715 interrupt_target_command (char *args
, int from_tty
)
2717 if (target_can_async_p ())
2719 int all_threads
= 0;
2721 dont_repeat (); /* Not for the faint of heart. */
2724 && strncmp (args
, "-a", sizeof ("-a") - 1) == 0)
2727 if (!non_stop
&& all_threads
)
2728 error (_("-a is meaningless in all-stop mode."));
2730 interrupt_target_1 (all_threads
);
2735 print_float_info (struct ui_file
*file
,
2736 struct frame_info
*frame
, const char *args
)
2738 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
2740 if (gdbarch_print_float_info_p (gdbarch
))
2741 gdbarch_print_float_info (gdbarch
, file
, frame
, args
);
2745 int printed_something
= 0;
2748 regnum
< gdbarch_num_regs (gdbarch
)
2749 + gdbarch_num_pseudo_regs (gdbarch
);
2752 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, float_reggroup
))
2754 printed_something
= 1;
2755 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
2758 if (!printed_something
)
2759 fprintf_filtered (file
, "No floating-point info "
2760 "available for this processor.\n");
2765 float_info (char *args
, int from_tty
)
2767 if (!target_has_registers
)
2768 error (_("The program has no registers now."));
2770 print_float_info (gdb_stdout
, get_selected_frame (NULL
), args
);
2774 unset_command (char *args
, int from_tty
)
2776 printf_filtered (_("\"unset\" must be followed by the "
2777 "name of an unset subcommand.\n"));
2778 help_list (unsetlist
, "unset ", -1, gdb_stdout
);
2782 _initialize_infcmd (void)
2784 struct cmd_list_element
*c
= NULL
;
2786 /* Add the filename of the terminal connected to inferior I/O. */
2787 add_setshow_filename_cmd ("inferior-tty", class_run
,
2788 &inferior_io_terminal_scratch
, _("\
2789 Set terminal for future runs of program being debugged."), _("\
2790 Show terminal for future runs of program being debugged."), _("\
2791 Usage: set inferior-tty /dev/pts/1"),
2792 set_inferior_tty_command
,
2793 show_inferior_tty_command
,
2794 &setlist
, &showlist
);
2795 add_com_alias ("tty", "set inferior-tty", class_alias
, 0);
2797 add_setshow_optional_filename_cmd ("args", class_run
,
2798 &inferior_args_scratch
, _("\
2799 Set argument list to give program being debugged when it is started."), _("\
2800 Show argument list to give program being debugged when it is started."), _("\
2801 Follow this command with any number of args, to be passed to the program."),
2804 &setlist
, &showlist
);
2806 c
= add_cmd ("environment", no_class
, environment_info
, _("\
2807 The environment to give the program, or one variable's value.\n\
2808 With an argument VAR, prints the value of environment variable VAR to\n\
2809 give the program being debugged. With no arguments, prints the entire\n\
2810 environment to be given to the program."), &showlist
);
2811 set_cmd_completer (c
, noop_completer
);
2813 add_prefix_cmd ("unset", no_class
, unset_command
,
2814 _("Complement to certain \"set\" commands."),
2815 &unsetlist
, "unset ", 0, &cmdlist
);
2817 c
= add_cmd ("environment", class_run
, unset_environment_command
, _("\
2818 Cancel environment variable VAR for the program.\n\
2819 This does not affect the program until the next \"run\" command."),
2821 set_cmd_completer (c
, noop_completer
);
2823 c
= add_cmd ("environment", class_run
, set_environment_command
, _("\
2824 Set environment variable value to give the program.\n\
2825 Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\
2826 VALUES of environment variables are uninterpreted strings.\n\
2827 This does not affect the program until the next \"run\" command."),
2829 set_cmd_completer (c
, noop_completer
);
2831 c
= add_com ("path", class_files
, path_command
, _("\
2832 Add directory DIR(s) to beginning of search path for object files.\n\
2833 $cwd in the path means the current working directory.\n\
2834 This path is equivalent to the $PATH shell variable. It is a list of\n\
2835 directories, separated by colons. These directories are searched to find\n\
2836 fully linked executable files and separately compiled object files as \
2838 set_cmd_completer (c
, filename_completer
);
2840 c
= add_cmd ("paths", no_class
, path_info
, _("\
2841 Current search path for finding object files.\n\
2842 $cwd in the path means the current working directory.\n\
2843 This path is equivalent to the $PATH shell variable. It is a list of\n\
2844 directories, separated by colons. These directories are searched to find\n\
2845 fully linked executable files and separately compiled object files as \
2848 set_cmd_completer (c
, noop_completer
);
2850 add_prefix_cmd ("kill", class_run
, kill_command
,
2851 _("Kill execution of program being debugged."),
2852 &killlist
, "kill ", 0, &cmdlist
);
2854 add_com ("attach", class_run
, attach_command
, _("\
2855 Attach to a process or file outside of GDB.\n\
2856 This command attaches to another target, of the same type as your last\n\
2857 \"target\" command (\"info files\" will show your target stack).\n\
2858 The command may take as argument a process id or a device file.\n\
2859 For a process id, you must have permission to send the process a signal,\n\
2860 and it must have the same effective uid as the debugger.\n\
2861 When using \"attach\" with a process id, the debugger finds the\n\
2862 program running in the process, looking first in the current working\n\
2863 directory, or (if not found there) using the source file search path\n\
2864 (see the \"directory\" command). You can also use the \"file\" command\n\
2865 to specify the program, and to load its symbol table."));
2867 add_prefix_cmd ("detach", class_run
, detach_command
, _("\
2868 Detach a process or file previously attached.\n\
2869 If a process, it is no longer traced, and it continues its execution. If\n\
2870 you were debugging a file, the file is closed and gdb no longer accesses it."),
2871 &detachlist
, "detach ", 0, &cmdlist
);
2873 add_com ("disconnect", class_run
, disconnect_command
, _("\
2874 Disconnect from a target.\n\
2875 The target will wait for another debugger to connect. Not available for\n\
2878 add_com ("signal", class_run
, signal_command
, _("\
2879 Continue program giving it signal specified by the argument.\n\
2880 An argument of \"0\" means continue program without giving it a signal."));
2882 add_com ("stepi", class_run
, stepi_command
, _("\
2883 Step one instruction exactly.\n\
2884 Argument N means do this N times (or till program stops for another \
2886 add_com_alias ("si", "stepi", class_alias
, 0);
2888 add_com ("nexti", class_run
, nexti_command
, _("\
2889 Step one instruction, but proceed through subroutine calls.\n\
2890 Argument N means do this N times (or till program stops for another \
2892 add_com_alias ("ni", "nexti", class_alias
, 0);
2894 add_com ("finish", class_run
, finish_command
, _("\
2895 Execute until selected stack frame returns.\n\
2896 Upon return, the value returned is printed and put in the value history."));
2897 add_com_alias ("fin", "finish", class_run
, 1);
2899 add_com ("next", class_run
, next_command
, _("\
2900 Step program, proceeding through subroutine calls.\n\
2901 Like the \"step\" command as long as subroutine calls do not happen;\n\
2902 when they do, the call is treated as one instruction.\n\
2903 Argument N means do this N times (or till program stops for another \
2905 add_com_alias ("n", "next", class_run
, 1);
2907 add_com_alias ("S", "next", class_run
, 1);
2909 add_com ("step", class_run
, step_command
, _("\
2910 Step program until it reaches a different source line.\n\
2911 Argument N means do this N times (or till program stops for another \
2913 add_com_alias ("s", "step", class_run
, 1);
2915 c
= add_com ("until", class_run
, until_command
, _("\
2916 Execute until the program reaches a source line greater than the current\n\
2917 or a specified location (same args as break command) within the current \
2919 set_cmd_completer (c
, location_completer
);
2920 add_com_alias ("u", "until", class_run
, 1);
2922 c
= add_com ("advance", class_run
, advance_command
, _("\
2923 Continue the program up to the given location (same form as args for break \
2925 Execution will also stop upon exit from the current stack frame."));
2926 set_cmd_completer (c
, location_completer
);
2928 c
= add_com ("jump", class_run
, jump_command
, _("\
2929 Continue program being debugged at specified line or address.\n\
2930 Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\
2931 for an address to start at."));
2932 set_cmd_completer (c
, location_completer
);
2936 c
= add_com ("go", class_run
, go_command
, _("\
2937 Usage: go <location>\n\
2938 Continue program being debugged, stopping at specified line or \n\
2940 Give as argument either LINENUM or *ADDR, where ADDR is an \n\
2941 expression for an address to start at.\n\
2942 This command is a combination of tbreak and jump."));
2943 set_cmd_completer (c
, location_completer
);
2947 add_com_alias ("g", "go", class_run
, 1);
2949 add_com ("continue", class_run
, continue_command
, _("\
2950 Continue program being debugged, after signal or breakpoint.\n\
2951 If proceeding from breakpoint, a number N may be used as an argument,\n\
2952 which means to set the ignore count of that breakpoint to N - 1 (so that\n\
2953 the breakpoint won't break until the Nth time it is reached).\n\
2955 If non-stop mode is enabled, continue only the current thread,\n\
2956 otherwise all the threads in the program are continued. To \n\
2957 continue all stopped threads in non-stop mode, use the -a option.\n\
2958 Specifying -a and an ignore count simultaneously is an error."));
2959 add_com_alias ("c", "cont", class_run
, 1);
2960 add_com_alias ("fg", "cont", class_run
, 1);
2962 c
= add_com ("run", class_run
, run_command
, _("\
2963 Start debugged program. You may specify arguments to give it.\n\
2964 Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\
2965 Input and output redirection with \">\", \"<\", or \">>\" are also \
2967 With no arguments, uses arguments last specified (with \"run\" \
2968 or \"set args\").\n\
2969 To cancel previous arguments and run with no arguments,\n\
2970 use \"set args\" without arguments."));
2971 set_cmd_completer (c
, filename_completer
);
2972 add_com_alias ("r", "run", class_run
, 1);
2974 add_com ("R", class_run
, run_no_args_command
,
2975 _("Start debugged program with no arguments."));
2977 c
= add_com ("start", class_run
, start_command
, _("\
2978 Run the debugged program until the beginning of the main procedure.\n\
2979 You may specify arguments to give to your program, just as with the\n\
2980 \"run\" command."));
2981 set_cmd_completer (c
, filename_completer
);
2983 add_com ("interrupt", class_run
, interrupt_target_command
,
2984 _("Interrupt the execution of the debugged program.\n\
2985 If non-stop mode is enabled, interrupt only the current thread,\n\
2986 otherwise all the threads in the program are stopped. To \n\
2987 interrupt all running threads in non-stop mode, use the -a option."));
2989 add_info ("registers", nofp_registers_info
, _("\
2990 List of integer registers and their contents, for selected stack frame.\n\
2991 Register name as argument means describe only that register."));
2992 add_info_alias ("r", "registers", 1);
2995 add_com ("lr", class_info
, nofp_registers_info
, _("\
2996 List of integer registers and their contents, for selected stack frame.\n\
2997 Register name as argument means describe only that register."));
2998 add_info ("all-registers", all_registers_info
, _("\
2999 List of all registers and their contents, for selected stack frame.\n\
3000 Register name as argument means describe only that register."));
3002 add_info ("program", program_info
,
3003 _("Execution status of the program."));
3005 add_info ("float", float_info
,
3006 _("Print the status of the floating point unit\n"));
3008 add_info ("vector", vector_info
,
3009 _("Print the status of the vector unit\n"));