1 /* Memory-access and commands for "inferior" process, for GDB.
3 Copyright (C) 1986-2013 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
21 #include "arch-utils.h"
23 #include "gdb_string.h"
37 #include "completer.h"
39 #include "event-top.h"
40 #include "parser-defs.h"
42 #include "reggroups.h"
46 #include "gdb_assert.h"
48 #include "target-descriptions.h"
49 #include "user-regs.h"
50 #include "exceptions.h"
51 #include "cli/cli-decode.h"
52 #include "gdbthread.h"
54 #include "inline-frame.h"
55 #include "tracepoint.h"
57 #include "continuations.h"
60 /* Local functions: */
62 static void nofp_registers_info (char *, int);
64 static void print_return_value (struct value
*function
,
65 struct type
*value_type
);
67 static void until_next_command (int);
69 static void until_command (char *, int);
71 static void path_info (char *, int);
73 static void path_command (char *, int);
75 static void unset_command (char *, int);
77 static void float_info (char *, int);
79 static void disconnect_command (char *, int);
81 static void unset_environment_command (char *, int);
83 static void set_environment_command (char *, int);
85 static void environment_info (char *, int);
87 static void program_info (char *, int);
89 static void finish_command (char *, int);
91 static void signal_command (char *, int);
93 static void jump_command (char *, int);
95 static void step_1 (int, int, char *);
96 static void step_once (int skip_subroutines
, int single_inst
,
97 int count
, int thread
);
99 static void next_command (char *, int);
101 static void step_command (char *, int);
103 static void run_command (char *, int);
105 static void run_no_args_command (char *args
, int from_tty
);
107 static void go_command (char *line_no
, int from_tty
);
109 static int strip_bg_char (char **);
111 void _initialize_infcmd (void);
113 #define ERROR_NO_INFERIOR \
114 if (!target_has_execution) error (_("The program is not being run."));
116 /* Scratch area where string containing arguments to give to the
117 program will be stored by 'set args'. As soon as anything is
118 stored, notice_args_set will move it into per-inferior storage.
119 Arguments are separated by spaces. Empty string (pointer to '\0')
122 static char *inferior_args_scratch
;
124 /* Scratch area where 'set inferior-tty' will store user-provided value.
125 We'll immediate copy it into per-inferior storage. */
127 static char *inferior_io_terminal_scratch
;
129 /* Pid of our debugged inferior, or 0 if no inferior now.
130 Since various parts of infrun.c test this to see whether there is a program
131 being debugged it should be nonzero (currently 3 is used) for remote
134 ptid_t inferior_ptid
;
136 /* Address at which inferior stopped. */
140 /* Flag indicating that a command has proceeded the inferior past the
141 current breakpoint. */
143 int breakpoint_proceeded
;
145 /* Nonzero if stopped due to completion of a stack dummy routine. */
147 enum stop_stack_kind stop_stack_dummy
;
149 /* Nonzero if stopped due to a random (unexpected) signal in inferior
152 int stopped_by_random_signal
;
155 /* Accessor routines. */
157 /* Set the io terminal for the current inferior. Ownership of
158 TERMINAL_NAME is not transferred. */
161 set_inferior_io_terminal (const char *terminal_name
)
163 xfree (current_inferior ()->terminal
);
164 current_inferior ()->terminal
= terminal_name
? xstrdup (terminal_name
) : 0;
168 get_inferior_io_terminal (void)
170 return current_inferior ()->terminal
;
174 set_inferior_tty_command (char *args
, int from_tty
,
175 struct cmd_list_element
*c
)
177 /* CLI has assigned the user-provided value to inferior_io_terminal_scratch.
178 Now route it to current inferior. */
179 set_inferior_io_terminal (inferior_io_terminal_scratch
);
183 show_inferior_tty_command (struct ui_file
*file
, int from_tty
,
184 struct cmd_list_element
*c
, const char *value
)
186 /* Note that we ignore the passed-in value in favor of computing it
188 const char *inferior_io_terminal
= get_inferior_io_terminal ();
190 if (inferior_io_terminal
== NULL
)
191 inferior_io_terminal
= "";
192 fprintf_filtered (gdb_stdout
,
193 _("Terminal for future runs of program being debugged "
194 "is \"%s\".\n"), inferior_io_terminal
);
198 get_inferior_args (void)
200 if (current_inferior ()->argc
!= 0)
204 n
= construct_inferior_arguments (current_inferior ()->argc
,
205 current_inferior ()->argv
);
206 set_inferior_args (n
);
210 if (current_inferior ()->args
== NULL
)
211 current_inferior ()->args
= xstrdup ("");
213 return current_inferior ()->args
;
216 /* Set the arguments for the current inferior. Ownership of
217 NEWARGS is not transferred. */
220 set_inferior_args (char *newargs
)
222 xfree (current_inferior ()->args
);
223 current_inferior ()->args
= newargs
? xstrdup (newargs
) : NULL
;
224 current_inferior ()->argc
= 0;
225 current_inferior ()->argv
= 0;
229 set_inferior_args_vector (int argc
, char **argv
)
231 current_inferior ()->argc
= argc
;
232 current_inferior ()->argv
= argv
;
235 /* Notice when `set args' is run. */
237 set_args_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
239 /* CLI has assigned the user-provided value to inferior_args_scratch.
240 Now route it to current inferior. */
241 set_inferior_args (inferior_args_scratch
);
244 /* Notice when `show args' is run. */
246 show_args_command (struct ui_file
*file
, int from_tty
,
247 struct cmd_list_element
*c
, const char *value
)
249 /* Note that we ignore the passed-in value in favor of computing it
251 deprecated_show_value_hack (file
, from_tty
, c
, get_inferior_args ());
255 /* Compute command-line string given argument vector. This does the
256 same shell processing as fork_inferior. */
258 construct_inferior_arguments (int argc
, char **argv
)
262 if (STARTUP_WITH_SHELL
)
265 /* This holds all the characters considered special to the
267 char *special
= "\"!&*|[]{}<>?`~^=;, \t\n";
268 const char quote
= '"';
270 /* This holds all the characters considered special to the
271 typical Unix shells. We include `^' because the SunOS
272 /bin/sh treats it as a synonym for `|'. */
273 char *special
= "\"!#$&*()\\|[]{}<>?'`~^; \t\n";
274 const char quote
= '\'';
280 /* We over-compute the size. It shouldn't matter. */
281 for (i
= 0; i
< argc
; ++i
)
282 length
+= 3 * strlen (argv
[i
]) + 1 + 2 * (argv
[i
][0] == '\0');
284 result
= (char *) xmalloc (length
);
287 for (i
= 0; i
< argc
; ++i
)
292 /* Need to handle empty arguments specially. */
293 if (argv
[i
][0] == '\0')
303 if (strpbrk (argv
[i
], special
))
309 for (cp
= argv
[i
]; *cp
; ++cp
)
313 /* A newline cannot be quoted with a backslash (it
314 just disappears), only by putting it inside
325 if (strchr (special
, *cp
) != NULL
)
341 /* In this case we can't handle arguments that contain spaces,
342 tabs, or newlines -- see breakup_args(). */
346 for (i
= 0; i
< argc
; ++i
)
348 char *cp
= strchr (argv
[i
], ' ');
350 cp
= strchr (argv
[i
], '\t');
352 cp
= strchr (argv
[i
], '\n');
354 error (_("can't handle command-line "
355 "argument containing whitespace"));
356 length
+= strlen (argv
[i
]) + 1;
359 result
= (char *) xmalloc (length
);
361 for (i
= 0; i
< argc
; ++i
)
364 strcat (result
, " ");
365 strcat (result
, argv
[i
]);
373 /* This function detects whether or not a '&' character (indicating
374 background execution) has been added as *the last* of the arguments ARGS
375 of a command. If it has, it removes it and returns 1. Otherwise it
376 does nothing and returns 0. */
378 strip_bg_char (char **args
)
382 p
= strchr (*args
, '&');
386 if (p
== (*args
+ strlen (*args
) - 1))
388 if (strlen (*args
) > 1)
392 while (*p
== ' ' || *p
== '\t');
403 /* Common actions to take after creating any sort of inferior, by any
404 means (running, attaching, connecting, et cetera). The target
405 should be stopped. */
408 post_create_inferior (struct target_ops
*target
, int from_tty
)
410 volatile struct gdb_exception ex
;
412 /* Be sure we own the terminal in case write operations are performed. */
413 target_terminal_ours ();
415 /* If the target hasn't taken care of this already, do it now.
416 Targets which need to access registers during to_open,
417 to_create_inferior, or to_attach should do it earlier; but many
419 target_find_description ();
421 /* Now that we know the register layout, retrieve current PC. But
422 if the PC is unavailable (e.g., we're opening a core file with
423 missing registers info), ignore it. */
425 TRY_CATCH (ex
, RETURN_MASK_ERROR
)
427 stop_pc
= regcache_read_pc (get_current_regcache ());
429 if (ex
.reason
< 0 && ex
.error
!= NOT_AVAILABLE_ERROR
)
430 throw_exception (ex
);
434 const unsigned solib_add_generation
435 = current_program_space
->solib_add_generation
;
437 /* Create the hooks to handle shared library load and unload
439 #ifdef SOLIB_CREATE_INFERIOR_HOOK
440 SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid
));
442 solib_create_inferior_hook (from_tty
);
445 if (current_program_space
->solib_add_generation
== solib_add_generation
)
447 /* The platform-specific hook should load initial shared libraries,
448 but didn't. FROM_TTY will be incorrectly 0 but such solib
449 targets should be fixed anyway. Call it only after the solib
450 target has been initialized by solib_create_inferior_hook. */
453 warning (_("platform-specific solib_create_inferior_hook did "
454 "not load initial shared libraries."));
456 /* If the solist is global across processes, there's no need to
458 if (!gdbarch_has_global_solist (target_gdbarch ()))
461 SOLIB_ADD (NULL
, 0, target
, auto_solib_add
);
463 solib_add (NULL
, 0, target
, auto_solib_add
);
469 /* If the user sets watchpoints before execution having started,
470 then she gets software watchpoints, because GDB can't know which
471 target will end up being pushed, or if it supports hardware
472 watchpoints or not. breakpoint_re_set takes care of promoting
473 watchpoints to hardware watchpoints if possible, however, if this
474 new inferior doesn't load shared libraries or we don't pull in
475 symbols from any other source on this target/arch,
476 breakpoint_re_set is never called. Call it now so that software
477 watchpoints get a chance to be promoted to hardware watchpoints
478 if the now pushed target supports hardware watchpoints. */
479 breakpoint_re_set ();
481 observer_notify_inferior_created (target
, from_tty
);
484 /* Kill the inferior if already running. This function is designed
485 to be called when we are about to start the execution of the program
486 from the beginning. Ask the user to confirm that he wants to restart
487 the program being debugged when FROM_TTY is non-null. */
490 kill_if_already_running (int from_tty
)
492 if (! ptid_equal (inferior_ptid
, null_ptid
) && target_has_execution
)
494 /* Bail out before killing the program if we will not be able to
496 target_require_runnable ();
499 && !query (_("The program being debugged has been started already.\n\
500 Start it from the beginning? ")))
501 error (_("Program not restarted."));
506 /* Implement the "run" command. If TBREAK_AT_MAIN is set, then insert
507 a temporary breakpoint at the begining of the main program before
508 running the program. */
511 run_command_1 (char *args
, int from_tty
, int tbreak_at_main
)
514 struct cleanup
*old_chain
;
516 struct ui_out
*uiout
= current_uiout
;
520 kill_if_already_running (from_tty
);
522 init_wait_for_inferior ();
523 clear_breakpoint_hit_counts ();
525 /* Clean up any leftovers from other runs. Some other things from
526 this function should probably be moved into target_pre_inferior. */
527 target_pre_inferior (from_tty
);
529 /* The comment here used to read, "The exec file is re-read every
530 time we do a generic_mourn_inferior, so we just have to worry
531 about the symbol file." The `generic_mourn_inferior' function
532 gets called whenever the program exits. However, suppose the
533 program exits, and *then* the executable file changes? We need
534 to check again here. Since reopen_exec_file doesn't do anything
535 if the timestamp hasn't changed, I don't see the harm. */
539 /* Insert the temporary breakpoint if a location was specified. */
541 tbreak_command (main_name (), 0);
543 exec_file
= (char *) get_exec_file (0);
545 if (non_stop
&& !target_supports_non_stop ())
546 error (_("The target does not support running in non-stop mode."));
548 /* We keep symbols from add-symbol-file, on the grounds that the
549 user might want to add some symbols before running the program
550 (right?). But sometimes (dynamic loading where the user manually
551 introduces the new symbols with add-symbol-file), the code which
552 the symbols describe does not persist between runs. Currently
553 the user has to manually nuke all symbols between runs if they
554 want them to go away (PR 2207). This is probably reasonable. */
558 if (target_can_async_p ())
559 async_disable_stdin ();
563 int async_exec
= strip_bg_char (&args
);
565 /* If we get a request for running in the bg but the target
566 doesn't support it, error out. */
567 if (async_exec
&& !target_can_async_p ())
568 error (_("Asynchronous execution not supported on this target."));
570 /* If we don't get a request of running in the bg, then we need
571 to simulate synchronous (fg) execution. */
572 if (!async_exec
&& target_can_async_p ())
574 /* Simulate synchronous execution. */
575 async_disable_stdin ();
578 /* If there were other args, beside '&', process them. */
580 set_inferior_args (args
);
585 ui_out_field_string (uiout
, NULL
, "Starting program");
586 ui_out_text (uiout
, ": ");
588 ui_out_field_string (uiout
, "execfile", exec_file
);
589 ui_out_spaces (uiout
, 1);
590 /* We call get_inferior_args() because we might need to compute
592 ui_out_field_string (uiout
, "infargs", get_inferior_args ());
593 ui_out_text (uiout
, "\n");
594 ui_out_flush (uiout
);
597 /* We call get_inferior_args() because we might need to compute
599 target_create_inferior (exec_file
, get_inferior_args (),
600 environ_vector (current_inferior ()->environment
),
603 /* We're starting off a new process. When we get out of here, in
604 non-stop mode, finish the state of all threads of that process,
605 but leave other threads alone, as they may be stopped in internal
606 events --- the frontend shouldn't see them as stopped. In
607 all-stop, always finish the state of all threads, as we may be
608 resuming more than just the new process. */
610 ptid
= pid_to_ptid (ptid_get_pid (inferior_ptid
));
612 ptid
= minus_one_ptid
;
613 old_chain
= make_cleanup (finish_thread_state_cleanup
, &ptid
);
615 /* Pass zero for FROM_TTY, because at this point the "run" command
616 has done its thing; now we are setting up the running program. */
617 post_create_inferior (¤t_target
, 0);
619 /* Start the target running. Do not use -1 continuation as it would skip
620 breakpoint right at the entry point. */
621 proceed (regcache_read_pc (get_current_regcache ()), GDB_SIGNAL_0
, 0);
623 /* Since there was no error, there's no need to finish the thread
625 discard_cleanups (old_chain
);
629 run_command (char *args
, int from_tty
)
631 run_command_1 (args
, from_tty
, 0);
635 run_no_args_command (char *args
, int from_tty
)
637 set_inferior_args ("");
641 /* Start the execution of the program up until the beginning of the main
645 start_command (char *args
, int from_tty
)
647 /* Some languages such as Ada need to search inside the program
648 minimal symbols for the location where to put the temporary
649 breakpoint before starting. */
650 if (!have_minimal_symbols ())
651 error (_("No symbol table loaded. Use the \"file\" command."));
653 /* Run the program until reaching the main procedure... */
654 run_command_1 (args
, from_tty
, 1);
658 proceed_thread_callback (struct thread_info
*thread
, void *arg
)
660 /* We go through all threads individually instead of compressing
661 into a single target `resume_all' request, because some threads
662 may be stopped in internal breakpoints/events, or stopped waiting
663 for its turn in the displaced stepping queue (that is, they are
664 running && !executing). The target side has no idea about why
665 the thread is stopped, so a `resume_all' command would resume too
666 much. If/when GDB gains a way to tell the target `hold this
667 thread stopped until I say otherwise', then we can optimize
669 if (!is_stopped (thread
->ptid
))
672 switch_to_thread (thread
->ptid
);
673 clear_proceed_status ();
674 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
679 ensure_valid_thread (void)
681 if (ptid_equal (inferior_ptid
, null_ptid
)
682 || is_exited (inferior_ptid
))
683 error (_("Cannot execute this command without a live selected thread."));
686 /* If the user is looking at trace frames, any resumption of execution
687 is likely to mix up recorded and live target data. So simply
688 disallow those commands. */
691 ensure_not_tfind_mode (void)
693 if (get_traceframe_number () >= 0)
694 error (_("Cannot execute this command while looking at trace frames."));
697 /* Throw an error indicating the current thread is running. */
700 error_is_running (void)
702 error (_("Cannot execute this command while "
703 "the selected thread is running."));
706 /* Calls error_is_running if the current thread is running. */
709 ensure_not_running (void)
711 if (is_running (inferior_ptid
))
716 continue_1 (int all_threads
)
719 ensure_not_tfind_mode ();
721 if (non_stop
&& all_threads
)
723 /* Don't error out if the current thread is running, because
724 there may be other stopped threads. */
725 struct cleanup
*old_chain
;
727 /* Backup current thread and selected frame. */
728 old_chain
= make_cleanup_restore_current_thread ();
730 iterate_over_threads (proceed_thread_callback
, NULL
);
732 /* Restore selected ptid. */
733 do_cleanups (old_chain
);
737 ensure_valid_thread ();
738 ensure_not_running ();
739 clear_proceed_status ();
740 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
744 /* continue [-a] [proceed-count] [&] */
746 continue_command (char *args
, int from_tty
)
752 /* Find out whether we must run in the background. */
754 async_exec
= strip_bg_char (&args
);
756 /* If we must run in the background, but the target can't do it,
758 if (async_exec
&& !target_can_async_p ())
759 error (_("Asynchronous execution not supported on this target."));
761 /* If we are not asked to run in the bg, then prepare to run in the
762 foreground, synchronously. */
763 if (!async_exec
&& target_can_async_p ())
765 /* Simulate synchronous execution. */
766 async_disable_stdin ();
771 if (strncmp (args
, "-a", sizeof ("-a") - 1) == 0)
774 args
+= sizeof ("-a") - 1;
780 if (!non_stop
&& all_threads
)
781 error (_("`-a' is meaningless in all-stop mode."));
783 if (args
!= NULL
&& all_threads
)
784 error (_("Can't resume all threads and specify "
785 "proceed count simultaneously."));
787 /* If we have an argument left, set proceed count of breakpoint we
794 struct thread_info
*tp
;
797 tp
= find_thread_ptid (inferior_ptid
);
801 struct target_waitstatus ws
;
803 get_last_target_status (&last_ptid
, &ws
);
804 tp
= find_thread_ptid (last_ptid
);
807 bs
= tp
->control
.stop_bpstat
;
809 while ((stat
= bpstat_num (&bs
, &num
)) != 0)
812 set_ignore_count (num
,
813 parse_and_eval_long (args
) - 1,
815 /* set_ignore_count prints a message ending with a period.
816 So print two spaces before "Continuing.". */
818 printf_filtered (" ");
822 if (!stopped
&& from_tty
)
825 ("Not stopped at any breakpoint; argument ignored.\n");
830 printf_filtered (_("Continuing.\n"));
832 continue_1 (all_threads
);
835 /* Record the starting point of a "step" or "next" command. */
838 set_step_frame (void)
840 struct symtab_and_line sal
;
842 find_frame_sal (get_current_frame (), &sal
);
843 set_step_info (get_current_frame (), sal
);
846 /* Step until outside of current statement. */
849 step_command (char *count_string
, int from_tty
)
851 step_1 (0, 0, count_string
);
854 /* Likewise, but skip over subroutine calls as if single instructions. */
857 next_command (char *count_string
, int from_tty
)
859 step_1 (1, 0, count_string
);
862 /* Likewise, but step only one instruction. */
865 stepi_command (char *count_string
, int from_tty
)
867 step_1 (0, 1, count_string
);
871 nexti_command (char *count_string
, int from_tty
)
873 step_1 (1, 1, count_string
);
877 delete_longjmp_breakpoint_cleanup (void *arg
)
879 int thread
= * (int *) arg
;
880 delete_longjmp_breakpoint (thread
);
884 step_1 (int skip_subroutines
, int single_inst
, char *count_string
)
887 struct cleanup
*cleanups
= make_cleanup (null_cleanup
, NULL
);
892 ensure_not_tfind_mode ();
893 ensure_valid_thread ();
894 ensure_not_running ();
897 async_exec
= strip_bg_char (&count_string
);
899 /* If we get a request for running in the bg but the target
900 doesn't support it, error out. */
901 if (async_exec
&& !target_can_async_p ())
902 error (_("Asynchronous execution not supported on this target."));
904 /* If we don't get a request of running in the bg, then we need
905 to simulate synchronous (fg) execution. */
906 if (!async_exec
&& target_can_async_p ())
908 /* Simulate synchronous execution. */
909 async_disable_stdin ();
912 count
= count_string
? parse_and_eval_long (count_string
) : 1;
914 if (!single_inst
|| skip_subroutines
) /* Leave si command alone. */
916 struct thread_info
*tp
= inferior_thread ();
918 if (in_thread_list (inferior_ptid
))
919 thread
= pid_to_thread_id (inferior_ptid
);
921 set_longjmp_breakpoint (tp
, get_frame_id (get_current_frame ()));
923 make_cleanup (delete_longjmp_breakpoint_cleanup
, &thread
);
926 /* In synchronous case, all is well; each step_once call will step once. */
927 if (!target_can_async_p ())
929 for (; count
> 0; count
--)
931 step_once (skip_subroutines
, single_inst
, count
, thread
);
933 if (!target_has_execution
)
937 struct thread_info
*tp
= inferior_thread ();
939 if (!tp
->control
.stop_step
|| !tp
->step_multi
)
941 /* If we stopped for some reason that is not stepping
942 there are no further steps to make. */
949 do_cleanups (cleanups
);
953 /* In the case of an asynchronous target things get complicated;
954 do only one step for now, before returning control to the
955 event loop. Let the continuation figure out how many other
956 steps we need to do, and handle them one at the time, through
958 step_once (skip_subroutines
, single_inst
, count
, thread
);
960 /* We are running, and the continuation is installed. It will
961 disable the longjmp breakpoint as appropriate. */
962 discard_cleanups (cleanups
);
966 struct step_1_continuation_args
969 int skip_subroutines
;
974 /* Called after we are done with one step operation, to check whether
975 we need to step again, before we print the prompt and return control
976 to the user. If count is > 1, we will need to do one more call to
977 proceed(), via step_once(). Basically it is like step_once and
978 step_1_continuation are co-recursive. */
980 step_1_continuation (void *args
, int err
)
982 struct step_1_continuation_args
*a
= args
;
984 if (target_has_execution
)
986 struct thread_info
*tp
;
988 tp
= inferior_thread ();
990 && tp
->step_multi
&& tp
->control
.stop_step
)
992 /* There are more steps to make, and we did stop due to
993 ending a stepping range. Do another step. */
994 step_once (a
->skip_subroutines
, a
->single_inst
,
995 a
->count
- 1, a
->thread
);
1001 /* We either hit an error, or stopped for some reason that is
1002 not stepping, or there are no further steps to make.
1004 if (!a
->single_inst
|| a
->skip_subroutines
)
1005 delete_longjmp_breakpoint (a
->thread
);
1008 /* Do just one step operation. This is useful to implement the 'step
1009 n' kind of commands. In case of asynchronous targets, we will have
1010 to set up a continuation to be done after the target stops (after
1011 this one step). For synch targets, the caller handles further
1015 step_once (int skip_subroutines
, int single_inst
, int count
, int thread
)
1017 struct frame_info
*frame
= get_current_frame ();
1021 /* Don't assume THREAD is a valid thread id. It is set to -1 if
1022 the longjmp breakpoint was not required. Use the
1023 INFERIOR_PTID thread instead, which is the same thread when
1025 struct thread_info
*tp
= inferior_thread ();
1027 clear_proceed_status ();
1034 /* Step at an inlined function behaves like "down". */
1035 if (!skip_subroutines
1036 && inline_skipped_frames (inferior_ptid
))
1040 /* Pretend that we've ran. */
1041 resume_ptid
= user_visible_resume_ptid (1);
1042 set_running (resume_ptid
, 1);
1044 step_into_inline_frame (inferior_ptid
);
1046 step_once (skip_subroutines
, single_inst
, count
- 1, thread
);
1049 /* Pretend that we've stopped. */
1052 if (target_can_async_p ())
1053 inferior_event_handler (INF_EXEC_COMPLETE
, NULL
);
1058 pc
= get_frame_pc (frame
);
1059 find_pc_line_pc_range (pc
,
1060 &tp
->control
.step_range_start
,
1061 &tp
->control
.step_range_end
);
1063 /* If we have no line info, switch to stepi mode. */
1064 if (tp
->control
.step_range_end
== 0 && step_stop_if_no_debug
)
1065 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1066 else if (tp
->control
.step_range_end
== 0)
1070 if (find_pc_partial_function (pc
, &name
,
1071 &tp
->control
.step_range_start
,
1072 &tp
->control
.step_range_end
) == 0)
1073 error (_("Cannot find bounds of current function"));
1075 target_terminal_ours ();
1076 printf_filtered (_("Single stepping until exit from function %s,"
1077 "\nwhich has no line number information.\n"),
1083 /* Say we are stepping, but stop after one insn whatever it does. */
1084 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1085 if (!skip_subroutines
)
1087 Don't step over function calls, not even to functions lacking
1089 tp
->control
.step_over_calls
= STEP_OVER_NONE
;
1092 if (skip_subroutines
)
1093 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1095 tp
->step_multi
= (count
> 1);
1096 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 1);
1098 /* For async targets, register a continuation to do any
1099 additional steps. For sync targets, the caller will handle
1100 further stepping. */
1101 if (target_can_async_p ())
1103 struct step_1_continuation_args
*args
;
1105 args
= xmalloc (sizeof (*args
));
1106 args
->skip_subroutines
= skip_subroutines
;
1107 args
->single_inst
= single_inst
;
1108 args
->count
= count
;
1109 args
->thread
= thread
;
1111 add_intermediate_continuation (tp
, step_1_continuation
, args
, xfree
);
1117 /* Continue program at specified address. */
1120 jump_command (char *arg
, int from_tty
)
1122 struct gdbarch
*gdbarch
= get_current_arch ();
1124 struct symtabs_and_lines sals
;
1125 struct symtab_and_line sal
;
1131 ensure_not_tfind_mode ();
1132 ensure_valid_thread ();
1133 ensure_not_running ();
1135 /* Find out whether we must run in the background. */
1137 async_exec
= strip_bg_char (&arg
);
1139 /* If we must run in the background, but the target can't do it,
1141 if (async_exec
&& !target_can_async_p ())
1142 error (_("Asynchronous execution not supported on this target."));
1145 error_no_arg (_("starting address"));
1147 sals
= decode_line_with_last_displayed (arg
, DECODE_LINE_FUNFIRSTLINE
);
1148 if (sals
.nelts
!= 1)
1150 error (_("Unreasonable jump request"));
1156 if (sal
.symtab
== 0 && sal
.pc
== 0)
1157 error (_("No source file has been specified."));
1159 resolve_sal_pc (&sal
); /* May error out. */
1161 /* See if we are trying to jump to another function. */
1162 fn
= get_frame_function (get_current_frame ());
1163 sfn
= find_pc_function (sal
.pc
);
1164 if (fn
!= NULL
&& sfn
!= fn
)
1166 if (!query (_("Line %d is not in `%s'. Jump anyway? "), sal
.line
,
1167 SYMBOL_PRINT_NAME (fn
)))
1169 error (_("Not confirmed."));
1176 fixup_symbol_section (sfn
, 0);
1177 if (section_is_overlay (SYMBOL_OBJ_SECTION (sfn
)) &&
1178 !section_is_mapped (SYMBOL_OBJ_SECTION (sfn
)))
1180 if (!query (_("WARNING!!! Destination is in "
1181 "unmapped overlay! Jump anyway? ")))
1183 error (_("Not confirmed."));
1193 printf_filtered (_("Continuing at "));
1194 fputs_filtered (paddress (gdbarch
, addr
), gdb_stdout
);
1195 printf_filtered (".\n");
1198 /* If we are not asked to run in the bg, then prepare to run in the
1199 foreground, synchronously. */
1200 if (!async_exec
&& target_can_async_p ())
1202 /* Simulate synchronous execution. */
1203 async_disable_stdin ();
1206 clear_proceed_status ();
1207 proceed (addr
, GDB_SIGNAL_0
, 0);
1211 /* Go to line or address in current procedure. */
1213 go_command (char *line_no
, int from_tty
)
1215 if (line_no
== (char *) NULL
|| !*line_no
)
1216 printf_filtered (_("Usage: go <location>\n"));
1219 tbreak_command (line_no
, from_tty
);
1220 jump_command (line_no
, from_tty
);
1225 /* Continue program giving it specified signal. */
1228 signal_command (char *signum_exp
, int from_tty
)
1230 enum gdb_signal oursig
;
1233 dont_repeat (); /* Too dangerous. */
1235 ensure_not_tfind_mode ();
1236 ensure_valid_thread ();
1237 ensure_not_running ();
1239 /* Find out whether we must run in the background. */
1240 if (signum_exp
!= NULL
)
1241 async_exec
= strip_bg_char (&signum_exp
);
1243 /* If we must run in the background, but the target can't do it,
1245 if (async_exec
&& !target_can_async_p ())
1246 error (_("Asynchronous execution not supported on this target."));
1248 /* If we are not asked to run in the bg, then prepare to run in the
1249 foreground, synchronously. */
1250 if (!async_exec
&& target_can_async_p ())
1252 /* Simulate synchronous execution. */
1253 async_disable_stdin ();
1257 error_no_arg (_("signal number"));
1259 /* It would be even slicker to make signal names be valid expressions,
1260 (the type could be "enum $signal" or some such), then the user could
1261 assign them to convenience variables. */
1262 oursig
= gdb_signal_from_name (signum_exp
);
1264 if (oursig
== GDB_SIGNAL_UNKNOWN
)
1266 /* No, try numeric. */
1267 int num
= parse_and_eval_long (signum_exp
);
1270 oursig
= GDB_SIGNAL_0
;
1272 oursig
= gdb_signal_from_command (num
);
1277 if (oursig
== GDB_SIGNAL_0
)
1278 printf_filtered (_("Continuing with no signal.\n"));
1280 printf_filtered (_("Continuing with signal %s.\n"),
1281 gdb_signal_to_name (oursig
));
1284 clear_proceed_status ();
1285 proceed ((CORE_ADDR
) -1, oursig
, 0);
1288 /* Continuation args to be passed to the "until" command
1290 struct until_next_continuation_args
1292 /* The thread that was current when the command was executed. */
1296 /* A continuation callback for until_next_command. */
1299 until_next_continuation (void *arg
, int err
)
1301 struct until_next_continuation_args
*a
= arg
;
1303 delete_longjmp_breakpoint (a
->thread
);
1306 /* Proceed until we reach a different source line with pc greater than
1307 our current one or exit the function. We skip calls in both cases.
1309 Note that eventually this command should probably be changed so
1310 that only source lines are printed out when we hit the breakpoint
1311 we set. This may involve changes to wait_for_inferior and the
1312 proceed status code. */
1315 until_next_command (int from_tty
)
1317 struct frame_info
*frame
;
1319 struct symbol
*func
;
1320 struct symtab_and_line sal
;
1321 struct thread_info
*tp
= inferior_thread ();
1322 int thread
= tp
->num
;
1323 struct cleanup
*old_chain
;
1325 clear_proceed_status ();
1328 frame
= get_current_frame ();
1330 /* Step until either exited from this function or greater
1331 than the current line (if in symbolic section) or pc (if
1334 pc
= get_frame_pc (frame
);
1335 func
= find_pc_function (pc
);
1339 struct minimal_symbol
*msymbol
= lookup_minimal_symbol_by_pc (pc
);
1341 if (msymbol
== NULL
)
1342 error (_("Execution is not within a known function."));
1344 tp
->control
.step_range_start
= SYMBOL_VALUE_ADDRESS (msymbol
);
1345 tp
->control
.step_range_end
= pc
;
1349 sal
= find_pc_line (pc
, 0);
1351 tp
->control
.step_range_start
= BLOCK_START (SYMBOL_BLOCK_VALUE (func
));
1352 tp
->control
.step_range_end
= sal
.end
;
1355 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1357 tp
->step_multi
= 0; /* Only one call to proceed */
1359 set_longjmp_breakpoint (tp
, get_frame_id (frame
));
1360 old_chain
= make_cleanup (delete_longjmp_breakpoint_cleanup
, &thread
);
1362 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 1);
1364 if (target_can_async_p () && is_running (inferior_ptid
))
1366 struct until_next_continuation_args
*cont_args
;
1368 discard_cleanups (old_chain
);
1369 cont_args
= XNEW (struct until_next_continuation_args
);
1370 cont_args
->thread
= inferior_thread ()->num
;
1372 add_continuation (tp
, until_next_continuation
, cont_args
, xfree
);
1375 do_cleanups (old_chain
);
1379 until_command (char *arg
, int from_tty
)
1384 ensure_not_tfind_mode ();
1385 ensure_valid_thread ();
1386 ensure_not_running ();
1388 /* Find out whether we must run in the background. */
1390 async_exec
= strip_bg_char (&arg
);
1392 /* If we must run in the background, but the target can't do it,
1394 if (async_exec
&& !target_can_async_p ())
1395 error (_("Asynchronous execution not supported on this target."));
1397 /* If we are not asked to run in the bg, then prepare to run in the
1398 foreground, synchronously. */
1399 if (!async_exec
&& target_can_async_p ())
1401 /* Simulate synchronous execution. */
1402 async_disable_stdin ();
1406 until_break_command (arg
, from_tty
, 0);
1408 until_next_command (from_tty
);
1412 advance_command (char *arg
, int from_tty
)
1417 ensure_not_tfind_mode ();
1418 ensure_valid_thread ();
1419 ensure_not_running ();
1422 error_no_arg (_("a location"));
1424 /* Find out whether we must run in the background. */
1426 async_exec
= strip_bg_char (&arg
);
1428 /* If we must run in the background, but the target can't do it,
1430 if (async_exec
&& !target_can_async_p ())
1431 error (_("Asynchronous execution not supported on this target."));
1433 /* If we are not asked to run in the bg, then prepare to run in the
1434 foreground, synchronously. */
1435 if (!async_exec
&& target_can_async_p ())
1437 /* Simulate synchronous execution. */
1438 async_disable_stdin ();
1441 until_break_command (arg
, from_tty
, 1);
1444 /* Return the value of the result of a function at the end of a 'finish'
1448 get_return_value (struct value
*function
, struct type
*value_type
)
1450 struct regcache
*stop_regs
= stop_registers
;
1451 struct gdbarch
*gdbarch
;
1452 struct value
*value
;
1453 struct cleanup
*cleanup
= make_cleanup (null_cleanup
, NULL
);
1455 /* If stop_registers were not saved, use the current registers. */
1458 stop_regs
= regcache_dup (get_current_regcache ());
1459 cleanup
= make_cleanup_regcache_xfree (stop_regs
);
1462 gdbarch
= get_regcache_arch (stop_regs
);
1464 CHECK_TYPEDEF (value_type
);
1465 gdb_assert (TYPE_CODE (value_type
) != TYPE_CODE_VOID
);
1467 /* FIXME: 2003-09-27: When returning from a nested inferior function
1468 call, it's possible (with no help from the architecture vector)
1469 to locate and return/print a "struct return" value. This is just
1470 a more complicated case of what is already being done in the
1471 inferior function call code. In fact, when inferior function
1472 calls are made async, this will likely be made the norm. */
1474 switch (gdbarch_return_value (gdbarch
, function
, value_type
,
1477 case RETURN_VALUE_REGISTER_CONVENTION
:
1478 case RETURN_VALUE_ABI_RETURNS_ADDRESS
:
1479 case RETURN_VALUE_ABI_PRESERVES_ADDRESS
:
1480 value
= allocate_value (value_type
);
1481 gdbarch_return_value (gdbarch
, function
, value_type
, stop_regs
,
1482 value_contents_raw (value
), NULL
);
1484 case RETURN_VALUE_STRUCT_CONVENTION
:
1488 internal_error (__FILE__
, __LINE__
, _("bad switch"));
1491 do_cleanups (cleanup
);
1496 /* Print the result of a function at the end of a 'finish' command. */
1499 print_return_value (struct value
*function
, struct type
*value_type
)
1501 struct value
*value
= get_return_value (function
, value_type
);
1502 struct ui_out
*uiout
= current_uiout
;
1506 struct value_print_options opts
;
1507 struct ui_file
*stb
;
1508 struct cleanup
*old_chain
;
1511 stb
= mem_fileopen ();
1512 old_chain
= make_cleanup_ui_file_delete (stb
);
1513 ui_out_text (uiout
, "Value returned is ");
1514 ui_out_field_fmt (uiout
, "gdb-result-var", "$%d",
1515 record_latest_value (value
));
1516 ui_out_text (uiout
, " = ");
1517 get_raw_print_options (&opts
);
1518 value_print (value
, stb
, &opts
);
1519 ui_out_field_stream (uiout
, "return-value", stb
);
1520 ui_out_text (uiout
, "\n");
1521 do_cleanups (old_chain
);
1525 ui_out_text (uiout
, "Value returned has type: ");
1526 ui_out_field_string (uiout
, "return-type", TYPE_NAME (value_type
));
1527 ui_out_text (uiout
, ".");
1528 ui_out_text (uiout
, " Cannot determine contents\n");
1532 /* Stuff that needs to be done by the finish command after the target
1533 has stopped. In asynchronous mode, we wait for the target to stop
1534 in the call to poll or select in the event loop, so it is
1535 impossible to do all the stuff as part of the finish_command
1536 function itself. The only chance we have to complete this command
1537 is in fetch_inferior_event, which is called by the event loop as
1538 soon as it detects that the target has stopped. */
1540 struct finish_command_continuation_args
1542 /* The thread that as current when the command was executed. */
1544 struct breakpoint
*breakpoint
;
1545 struct symbol
*function
;
1549 finish_command_continuation (void *arg
, int err
)
1551 struct finish_command_continuation_args
*a
= arg
;
1555 struct thread_info
*tp
= NULL
;
1558 if (!ptid_equal (inferior_ptid
, null_ptid
)
1559 && target_has_execution
1560 && is_stopped (inferior_ptid
))
1562 tp
= inferior_thread ();
1563 bs
= tp
->control
.stop_bpstat
;
1566 if (bpstat_find_breakpoint (bs
, a
->breakpoint
) != NULL
1567 && a
->function
!= NULL
)
1569 struct type
*value_type
;
1571 value_type
= TYPE_TARGET_TYPE (SYMBOL_TYPE (a
->function
));
1573 internal_error (__FILE__
, __LINE__
,
1574 _("finish_command: function has no target type"));
1576 if (TYPE_CODE (value_type
) != TYPE_CODE_VOID
)
1578 volatile struct gdb_exception ex
;
1581 func
= read_var_value (a
->function
, get_current_frame ());
1582 TRY_CATCH (ex
, RETURN_MASK_ALL
)
1584 /* print_return_value can throw an exception in some
1585 circumstances. We need to catch this so that we still
1586 delete the breakpoint. */
1587 print_return_value (func
, value_type
);
1590 exception_print (gdb_stdout
, ex
);
1594 /* We suppress normal call of normal_stop observer and do it
1595 here so that the *stopped notification includes the return
1597 if (bs
!= NULL
&& tp
->control
.proceed_to_finish
)
1598 observer_notify_normal_stop (bs
, 1 /* print frame */);
1601 delete_breakpoint (a
->breakpoint
);
1602 delete_longjmp_breakpoint (a
->thread
);
1606 finish_command_continuation_free_arg (void *arg
)
1611 /* finish_backward -- helper function for finish_command. */
1614 finish_backward (struct symbol
*function
)
1616 struct symtab_and_line sal
;
1617 struct thread_info
*tp
= inferior_thread ();
1619 CORE_ADDR func_addr
;
1621 pc
= get_frame_pc (get_current_frame ());
1623 if (find_pc_partial_function (pc
, NULL
, &func_addr
, NULL
) == 0)
1624 internal_error (__FILE__
, __LINE__
,
1625 _("Finish: couldn't find function."));
1627 sal
= find_pc_line (func_addr
, 0);
1629 tp
->control
.proceed_to_finish
= 1;
1630 /* Special case: if we're sitting at the function entry point,
1631 then all we need to do is take a reverse singlestep. We
1632 don't need to set a breakpoint, and indeed it would do us
1635 Note that this can only happen at frame #0, since there's
1636 no way that a function up the stack can have a return address
1637 that's equal to its entry point. */
1641 struct frame_info
*frame
= get_selected_frame (NULL
);
1642 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
1643 struct symtab_and_line sr_sal
;
1645 /* Set a step-resume at the function's entry point. Once that's
1646 hit, we'll do one more step backwards. */
1649 sr_sal
.pspace
= get_frame_program_space (frame
);
1650 insert_step_resume_breakpoint_at_sal (gdbarch
,
1651 sr_sal
, null_frame_id
);
1653 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
1657 /* We're almost there -- we just need to back up by one more
1659 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1660 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 1);
1664 /* finish_forward -- helper function for finish_command. */
1667 finish_forward (struct symbol
*function
, struct frame_info
*frame
)
1669 struct frame_id frame_id
= get_frame_id (frame
);
1670 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
1671 struct symtab_and_line sal
;
1672 struct thread_info
*tp
= inferior_thread ();
1673 struct breakpoint
*breakpoint
;
1674 struct cleanup
*old_chain
;
1675 struct finish_command_continuation_args
*cargs
;
1676 int thread
= tp
->num
;
1678 sal
= find_pc_line (get_frame_pc (frame
), 0);
1679 sal
.pc
= get_frame_pc (frame
);
1681 breakpoint
= set_momentary_breakpoint (gdbarch
, sal
,
1682 get_stack_frame_id (frame
),
1685 /* set_momentary_breakpoint invalidates FRAME. */
1688 old_chain
= make_cleanup_delete_breakpoint (breakpoint
);
1690 set_longjmp_breakpoint (tp
, frame_id
);
1691 make_cleanup (delete_longjmp_breakpoint_cleanup
, &thread
);
1693 /* We want stop_registers, please... */
1694 tp
->control
.proceed_to_finish
= 1;
1695 cargs
= xmalloc (sizeof (*cargs
));
1697 cargs
->thread
= thread
;
1698 cargs
->breakpoint
= breakpoint
;
1699 cargs
->function
= function
;
1700 add_continuation (tp
, finish_command_continuation
, cargs
,
1701 finish_command_continuation_free_arg
);
1702 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
1704 discard_cleanups (old_chain
);
1705 if (!target_can_async_p ())
1706 do_all_continuations (0);
1709 /* "finish": Set a temporary breakpoint at the place the selected
1710 frame will return to, then continue. */
1713 finish_command (char *arg
, int from_tty
)
1715 struct frame_info
*frame
;
1716 struct symbol
*function
;
1721 ensure_not_tfind_mode ();
1722 ensure_valid_thread ();
1723 ensure_not_running ();
1725 /* Find out whether we must run in the background. */
1727 async_exec
= strip_bg_char (&arg
);
1729 /* If we must run in the background, but the target can't do it,
1731 if (async_exec
&& !target_can_async_p ())
1732 error (_("Asynchronous execution not supported on this target."));
1734 /* If we are not asked to run in the bg, then prepare to run in the
1735 foreground, synchronously. */
1736 if (!async_exec
&& target_can_async_p ())
1738 /* Simulate synchronous execution. */
1739 async_disable_stdin ();
1743 error (_("The \"finish\" command does not take any arguments."));
1745 frame
= get_prev_frame (get_selected_frame (_("No selected frame.")));
1747 error (_("\"finish\" not meaningful in the outermost frame."));
1749 clear_proceed_status ();
1751 /* Finishing from an inline frame is completely different. We don't
1752 try to show the "return value" - no way to locate it. So we do
1753 not need a completion. */
1754 if (get_frame_type (get_selected_frame (_("No selected frame.")))
1757 /* Claim we are stepping in the calling frame. An empty step
1758 range means that we will stop once we aren't in a function
1759 called by that frame. We don't use the magic "1" value for
1760 step_range_end, because then infrun will think this is nexti,
1761 and not step over the rest of this inlined function call. */
1762 struct thread_info
*tp
= inferior_thread ();
1763 struct symtab_and_line empty_sal
;
1765 init_sal (&empty_sal
);
1766 set_step_info (frame
, empty_sal
);
1767 tp
->control
.step_range_start
= get_frame_pc (frame
);
1768 tp
->control
.step_range_end
= tp
->control
.step_range_start
;
1769 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1771 /* Print info on the selected frame, including level number but not
1775 printf_filtered (_("Run till exit from "));
1776 print_stack_frame (get_selected_frame (NULL
), 1, LOCATION
);
1779 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 1);
1783 /* Ignore TAILCALL_FRAME type frames, they were executed already before
1784 entering THISFRAME. */
1785 while (get_frame_type (frame
) == TAILCALL_FRAME
)
1786 frame
= get_prev_frame (frame
);
1788 /* Find the function we will return from. */
1790 function
= find_pc_function (get_frame_pc (get_selected_frame (NULL
)));
1792 /* Print info on the selected frame, including level number but not
1796 if (execution_direction
== EXEC_REVERSE
)
1797 printf_filtered (_("Run back to call of "));
1799 printf_filtered (_("Run till exit from "));
1801 print_stack_frame (get_selected_frame (NULL
), 1, LOCATION
);
1804 if (execution_direction
== EXEC_REVERSE
)
1805 finish_backward (function
);
1807 finish_forward (function
, frame
);
1812 program_info (char *args
, int from_tty
)
1816 struct thread_info
*tp
;
1819 if (!target_has_execution
)
1821 printf_filtered (_("The program being debugged is not being run.\n"));
1826 ptid
= inferior_ptid
;
1829 struct target_waitstatus ws
;
1831 get_last_target_status (&ptid
, &ws
);
1834 if (ptid_equal (ptid
, null_ptid
) || is_exited (ptid
))
1835 error (_("Invalid selected thread."));
1836 else if (is_running (ptid
))
1837 error (_("Selected thread is running."));
1839 tp
= find_thread_ptid (ptid
);
1840 bs
= tp
->control
.stop_bpstat
;
1841 stat
= bpstat_num (&bs
, &num
);
1843 target_files_info ();
1844 printf_filtered (_("Program stopped at %s.\n"),
1845 paddress (target_gdbarch (), stop_pc
));
1846 if (tp
->control
.stop_step
)
1847 printf_filtered (_("It stopped after being stepped.\n"));
1850 /* There may be several breakpoints in the same place, so this
1851 isn't as strange as it seems. */
1856 printf_filtered (_("It stopped at a breakpoint "
1857 "that has since been deleted.\n"));
1860 printf_filtered (_("It stopped at breakpoint %d.\n"), num
);
1861 stat
= bpstat_num (&bs
, &num
);
1864 else if (tp
->suspend
.stop_signal
!= GDB_SIGNAL_0
)
1866 printf_filtered (_("It stopped with signal %s, %s.\n"),
1867 gdb_signal_to_name (tp
->suspend
.stop_signal
),
1868 gdb_signal_to_string (tp
->suspend
.stop_signal
));
1873 printf_filtered (_("Type \"info stack\" or \"info "
1874 "registers\" for more information.\n"));
1879 environment_info (char *var
, int from_tty
)
1883 char *val
= get_in_environ (current_inferior ()->environment
, var
);
1887 puts_filtered (var
);
1888 puts_filtered (" = ");
1889 puts_filtered (val
);
1890 puts_filtered ("\n");
1894 puts_filtered ("Environment variable \"");
1895 puts_filtered (var
);
1896 puts_filtered ("\" not defined.\n");
1901 char **vector
= environ_vector (current_inferior ()->environment
);
1905 puts_filtered (*vector
++);
1906 puts_filtered ("\n");
1912 set_environment_command (char *arg
, int from_tty
)
1914 char *p
, *val
, *var
;
1918 error_no_arg (_("environment variable and value"));
1920 /* Find seperation between variable name and value. */
1921 p
= (char *) strchr (arg
, '=');
1922 val
= (char *) strchr (arg
, ' ');
1924 if (p
!= 0 && val
!= 0)
1926 /* We have both a space and an equals. If the space is before the
1927 equals, walk forward over the spaces til we see a nonspace
1928 (possibly the equals). */
1933 /* Now if the = is after the char following the spaces,
1934 take the char following the spaces. */
1938 else if (val
!= 0 && p
== 0)
1942 error_no_arg (_("environment variable to set"));
1944 if (p
== 0 || p
[1] == 0)
1948 p
= arg
+ strlen (arg
); /* So that savestring below will work. */
1952 /* Not setting variable value to null. */
1954 while (*val
== ' ' || *val
== '\t')
1958 while (p
!= arg
&& (p
[-1] == ' ' || p
[-1] == '\t'))
1961 var
= savestring (arg
, p
- arg
);
1964 printf_filtered (_("Setting environment variable "
1965 "\"%s\" to null value.\n"),
1967 set_in_environ (current_inferior ()->environment
, var
, "");
1970 set_in_environ (current_inferior ()->environment
, var
, val
);
1975 unset_environment_command (char *var
, int from_tty
)
1979 /* If there is no argument, delete all environment variables.
1980 Ask for confirmation if reading from the terminal. */
1981 if (!from_tty
|| query (_("Delete all environment variables? ")))
1983 free_environ (current_inferior ()->environment
);
1984 current_inferior ()->environment
= make_environ ();
1988 unset_in_environ (current_inferior ()->environment
, var
);
1991 /* Handle the execution path (PATH variable). */
1993 static const char path_var_name
[] = "PATH";
1996 path_info (char *args
, int from_tty
)
1998 puts_filtered ("Executable and object file path: ");
1999 puts_filtered (get_in_environ (current_inferior ()->environment
,
2001 puts_filtered ("\n");
2004 /* Add zero or more directories to the front of the execution path. */
2007 path_command (char *dirname
, int from_tty
)
2013 env
= get_in_environ (current_inferior ()->environment
, path_var_name
);
2014 /* Can be null if path is not set. */
2017 exec_path
= xstrdup (env
);
2018 mod_path (dirname
, &exec_path
);
2019 set_in_environ (current_inferior ()->environment
, path_var_name
, exec_path
);
2022 path_info ((char *) NULL
, from_tty
);
2026 /* Print out the register NAME with value VAL, to FILE, in the default
2030 default_print_one_register_info (struct ui_file
*file
,
2034 struct type
*regtype
= value_type (val
);
2036 fputs_filtered (name
, file
);
2037 print_spaces_filtered (15 - strlen (name
), file
);
2039 if (!value_entirely_available (val
))
2041 fprintf_filtered (file
, "*value not available*\n");
2045 /* If virtual format is floating, print it that way, and in raw
2047 if (TYPE_CODE (regtype
) == TYPE_CODE_FLT
2048 || TYPE_CODE (regtype
) == TYPE_CODE_DECFLOAT
)
2051 struct value_print_options opts
;
2052 const gdb_byte
*valaddr
= value_contents_for_printing (val
);
2053 enum bfd_endian byte_order
= gdbarch_byte_order (get_type_arch (regtype
));
2055 get_user_print_options (&opts
);
2059 value_contents_for_printing (val
),
2060 value_embedded_offset (val
), 0,
2061 file
, 0, val
, &opts
, current_language
);
2063 fprintf_filtered (file
, "\t(raw 0x");
2064 for (j
= 0; j
< TYPE_LENGTH (regtype
); j
++)
2068 if (byte_order
== BFD_ENDIAN_BIG
)
2071 idx
= TYPE_LENGTH (regtype
) - 1 - j
;
2072 fprintf_filtered (file
, "%02x", (unsigned char) valaddr
[idx
]);
2074 fprintf_filtered (file
, ")");
2078 struct value_print_options opts
;
2080 /* Print the register in hex. */
2081 get_formatted_print_options (&opts
, 'x');
2084 value_contents_for_printing (val
),
2085 value_embedded_offset (val
), 0,
2086 file
, 0, val
, &opts
, current_language
);
2087 /* If not a vector register, print it also according to its
2089 if (TYPE_VECTOR (regtype
) == 0)
2091 get_user_print_options (&opts
);
2093 fprintf_filtered (file
, "\t");
2095 value_contents_for_printing (val
),
2096 value_embedded_offset (val
), 0,
2097 file
, 0, val
, &opts
, current_language
);
2101 fprintf_filtered (file
, "\n");
2104 /* Print out the machine register regnum. If regnum is -1, print all
2105 registers (print_all == 1) or all non-float and non-vector
2106 registers (print_all == 0).
2108 For most machines, having all_registers_info() print the
2109 register(s) one per line is good enough. If a different format is
2110 required, (eg, for MIPS or Pyramid 90x, which both have lots of
2111 regs), or there is an existing convention for showing all the
2112 registers, define the architecture method PRINT_REGISTERS_INFO to
2113 provide that format. */
2116 default_print_registers_info (struct gdbarch
*gdbarch
,
2117 struct ui_file
*file
,
2118 struct frame_info
*frame
,
2119 int regnum
, int print_all
)
2122 const int numregs
= gdbarch_num_regs (gdbarch
)
2123 + gdbarch_num_pseudo_regs (gdbarch
);
2125 for (i
= 0; i
< numregs
; i
++)
2127 struct type
*regtype
;
2130 /* Decide between printing all regs, non-float / vector regs, or
2136 if (!gdbarch_register_reggroup_p (gdbarch
, i
, all_reggroup
))
2141 if (!gdbarch_register_reggroup_p (gdbarch
, i
, general_reggroup
))
2151 /* If the register name is empty, it is undefined for this
2152 processor, so don't display anything. */
2153 if (gdbarch_register_name (gdbarch
, i
) == NULL
2154 || *(gdbarch_register_name (gdbarch
, i
)) == '\0')
2157 regtype
= register_type (gdbarch
, i
);
2158 val
= allocate_value (regtype
);
2160 /* Get the data in raw format. */
2161 if (! deprecated_frame_register_read (frame
, i
, value_contents_raw (val
)))
2162 mark_value_bytes_unavailable (val
, 0, TYPE_LENGTH (value_type (val
)));
2164 default_print_one_register_info (file
,
2165 gdbarch_register_name (gdbarch
, i
),
2171 registers_info (char *addr_exp
, int fpregs
)
2173 struct frame_info
*frame
;
2174 struct gdbarch
*gdbarch
;
2176 if (!target_has_registers
)
2177 error (_("The program has no registers now."));
2178 frame
= get_selected_frame (NULL
);
2179 gdbarch
= get_frame_arch (frame
);
2183 gdbarch_print_registers_info (gdbarch
, gdb_stdout
,
2188 while (*addr_exp
!= '\0')
2193 /* Keep skipping leading white space. */
2194 if (isspace ((*addr_exp
)))
2200 /* Discard any leading ``$''. Check that there is something
2201 resembling a register following it. */
2202 if (addr_exp
[0] == '$')
2204 if (isspace ((*addr_exp
)) || (*addr_exp
) == '\0')
2205 error (_("Missing register name"));
2207 /* Find the start/end of this register name/num/group. */
2209 while ((*addr_exp
) != '\0' && !isspace ((*addr_exp
)))
2213 /* Figure out what we've found and display it. */
2215 /* A register name? */
2217 int regnum
= user_reg_map_name_to_regnum (gdbarch
, start
, end
- start
);
2221 /* User registers lie completely outside of the range of
2222 normal registers. Catch them early so that the target
2224 if (regnum
>= gdbarch_num_regs (gdbarch
)
2225 + gdbarch_num_pseudo_regs (gdbarch
))
2227 struct value
*regval
= value_of_user_reg (regnum
, frame
);
2228 const char *regname
= user_reg_map_regnum_to_name (gdbarch
,
2231 /* Print in the same fashion
2232 gdbarch_print_registers_info's default
2233 implementation prints. */
2234 default_print_one_register_info (gdb_stdout
,
2239 gdbarch_print_registers_info (gdbarch
, gdb_stdout
,
2240 frame
, regnum
, fpregs
);
2245 /* A register group? */
2247 struct reggroup
*group
;
2249 for (group
= reggroup_next (gdbarch
, NULL
);
2251 group
= reggroup_next (gdbarch
, group
))
2253 /* Don't bother with a length check. Should the user
2254 enter a short register group name, go with the first
2255 group that matches. */
2256 if (strncmp (start
, reggroup_name (group
), end
- start
) == 0)
2264 regnum
< gdbarch_num_regs (gdbarch
)
2265 + gdbarch_num_pseudo_regs (gdbarch
);
2268 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, group
))
2269 gdbarch_print_registers_info (gdbarch
,
2277 /* Nothing matched. */
2278 error (_("Invalid register `%.*s'"), (int) (end
- start
), start
);
2283 all_registers_info (char *addr_exp
, int from_tty
)
2285 registers_info (addr_exp
, 1);
2289 nofp_registers_info (char *addr_exp
, int from_tty
)
2291 registers_info (addr_exp
, 0);
2295 print_vector_info (struct ui_file
*file
,
2296 struct frame_info
*frame
, const char *args
)
2298 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
2300 if (gdbarch_print_vector_info_p (gdbarch
))
2301 gdbarch_print_vector_info (gdbarch
, file
, frame
, args
);
2305 int printed_something
= 0;
2308 regnum
< gdbarch_num_regs (gdbarch
)
2309 + gdbarch_num_pseudo_regs (gdbarch
);
2312 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, vector_reggroup
))
2314 printed_something
= 1;
2315 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
2318 if (!printed_something
)
2319 fprintf_filtered (file
, "No vector information\n");
2324 vector_info (char *args
, int from_tty
)
2326 if (!target_has_registers
)
2327 error (_("The program has no registers now."));
2329 print_vector_info (gdb_stdout
, get_selected_frame (NULL
), args
);
2332 /* Kill the inferior process. Make us have no inferior. */
2335 kill_command (char *arg
, int from_tty
)
2337 /* FIXME: This should not really be inferior_ptid (or target_has_execution).
2338 It should be a distinct flag that indicates that a target is active, cuz
2339 some targets don't have processes! */
2341 if (ptid_equal (inferior_ptid
, null_ptid
))
2342 error (_("The program is not being run."));
2343 if (!query (_("Kill the program being debugged? ")))
2344 error (_("Not confirmed."));
2347 /* If we still have other inferiors to debug, then don't mess with
2348 with their threads. */
2349 if (!have_inferiors ())
2351 init_thread_list (); /* Destroy thread info. */
2353 /* Killing off the inferior can leave us with a core file. If
2354 so, print the state we are left in. */
2355 if (target_has_stack
)
2357 printf_filtered (_("In %s,\n"), target_longname
);
2358 print_stack_frame (get_selected_frame (NULL
), 1, SRC_AND_LOC
);
2361 bfd_cache_close_all ();
2364 /* Used in `attach&' command. ARG is a point to an integer
2365 representing a process id. Proceed threads of this process iff
2366 they stopped due to debugger request, and when they did, they
2367 reported a clean stop (GDB_SIGNAL_0). Do not proceed threads
2368 that have been explicitly been told to stop. */
2371 proceed_after_attach_callback (struct thread_info
*thread
,
2374 int pid
= * (int *) arg
;
2376 if (ptid_get_pid (thread
->ptid
) == pid
2377 && !is_exited (thread
->ptid
)
2378 && !is_executing (thread
->ptid
)
2379 && !thread
->stop_requested
2380 && thread
->suspend
.stop_signal
== GDB_SIGNAL_0
)
2382 switch_to_thread (thread
->ptid
);
2383 clear_proceed_status ();
2384 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
2391 proceed_after_attach (int pid
)
2393 /* Don't error out if the current thread is running, because
2394 there may be other stopped threads. */
2395 struct cleanup
*old_chain
;
2397 /* Backup current thread and selected frame. */
2398 old_chain
= make_cleanup_restore_current_thread ();
2400 iterate_over_threads (proceed_after_attach_callback
, &pid
);
2402 /* Restore selected ptid. */
2403 do_cleanups (old_chain
);
2408 * Should save/restore the tty state since it might be that the
2409 * program to be debugged was started on this tty and it wants
2410 * the tty in some state other than what we want. If it's running
2411 * on another terminal or without a terminal, then saving and
2412 * restoring the tty state is a harmless no-op.
2413 * This only needs to be done if we are attaching to a process.
2416 /* attach_command --
2417 takes a program started up outside of gdb and ``attaches'' to it.
2418 This stops it cold in its tracks and allows us to start debugging it.
2419 and wait for the trace-trap that results from attaching. */
2422 attach_command_post_wait (char *args
, int from_tty
, int async_exec
)
2425 char *full_exec_path
= NULL
;
2426 struct inferior
*inferior
;
2428 inferior
= current_inferior ();
2429 inferior
->control
.stop_soon
= NO_STOP_QUIETLY
;
2431 /* If no exec file is yet known, try to determine it from the
2433 exec_file
= (char *) get_exec_file (0);
2436 exec_file
= target_pid_to_exec_file (PIDGET (inferior_ptid
));
2439 /* It's possible we don't have a full path, but rather just a
2440 filename. Some targets, such as HP-UX, don't provide the
2443 Attempt to qualify the filename against the source path.
2444 (If that fails, we'll just fall back on the original
2445 filename. Not much more we can do...) */
2447 if (!source_full_path_of (exec_file
, &full_exec_path
))
2448 full_exec_path
= xstrdup (exec_file
);
2450 exec_file_attach (full_exec_path
, from_tty
);
2451 symbol_file_add_main (full_exec_path
, from_tty
);
2456 reopen_exec_file ();
2460 /* Take any necessary post-attaching actions for this platform. */
2461 target_post_attach (PIDGET (inferior_ptid
));
2463 post_create_inferior (¤t_target
, from_tty
);
2465 /* Install inferior's terminal modes. */
2466 target_terminal_inferior ();
2470 /* The user requested an `attach&', so be sure to leave threads
2471 that didn't get a signal running. */
2473 /* Immediatelly resume all suspended threads of this inferior,
2474 and this inferior only. This should have no effect on
2475 already running threads. If a thread has been stopped with a
2476 signal, leave it be. */
2478 proceed_after_attach (inferior
->pid
);
2481 if (inferior_thread ()->suspend
.stop_signal
== GDB_SIGNAL_0
)
2483 clear_proceed_status ();
2484 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
2490 /* The user requested a plain `attach', so be sure to leave
2491 the inferior stopped. */
2493 if (target_can_async_p ())
2494 async_enable_stdin ();
2496 /* At least the current thread is already stopped. */
2498 /* In all-stop, by definition, all threads have to be already
2499 stopped at this point. In non-stop, however, although the
2500 selected thread is stopped, others may still be executing.
2501 Be sure to explicitly stop all threads of the process. This
2502 should have no effect on already stopped threads. */
2504 target_stop (pid_to_ptid (inferior
->pid
));
2506 /* Tell the user/frontend where we're stopped. */
2508 if (deprecated_attach_hook
)
2509 deprecated_attach_hook ();
2513 struct attach_command_continuation_args
2521 attach_command_continuation (void *args
, int err
)
2523 struct attach_command_continuation_args
*a
= args
;
2528 attach_command_post_wait (a
->args
, a
->from_tty
, a
->async_exec
);
2532 attach_command_continuation_free_args (void *args
)
2534 struct attach_command_continuation_args
*a
= args
;
2541 attach_command (char *args
, int from_tty
)
2544 struct cleanup
*back_to
= make_cleanup (null_cleanup
, NULL
);
2546 dont_repeat (); /* Not for the faint of heart */
2548 if (gdbarch_has_global_solist (target_gdbarch ()))
2549 /* Don't complain if all processes share the same symbol
2552 else if (target_has_execution
)
2554 if (query (_("A program is being debugged already. Kill it? ")))
2557 error (_("Not killed."));
2560 /* Clean up any leftovers from other runs. Some other things from
2561 this function should probably be moved into target_pre_inferior. */
2562 target_pre_inferior (from_tty
);
2564 if (non_stop
&& !target_supports_non_stop ())
2565 error (_("Cannot attach to this target in non-stop mode"));
2569 async_exec
= strip_bg_char (&args
);
2571 /* If we get a request for running in the bg but the target
2572 doesn't support it, error out. */
2573 if (async_exec
&& !target_can_async_p ())
2574 error (_("Asynchronous execution not supported on this target."));
2577 /* If we don't get a request of running in the bg, then we need
2578 to simulate synchronous (fg) execution. */
2579 if (!async_exec
&& target_can_async_p ())
2581 /* Simulate synchronous execution. */
2582 async_disable_stdin ();
2583 make_cleanup ((make_cleanup_ftype
*)async_enable_stdin
, NULL
);
2586 target_attach (args
, from_tty
);
2588 /* Set up the "saved terminal modes" of the inferior
2589 based on what modes we are starting it with. */
2590 target_terminal_init ();
2592 /* Set up execution context to know that we should return from
2593 wait_for_inferior as soon as the target reports a stop. */
2594 init_wait_for_inferior ();
2595 clear_proceed_status ();
2599 /* If we find that the current thread isn't stopped, explicitly
2600 do so now, because we're going to install breakpoints and
2604 /* The user requested an `attach&'; stop just one thread. */
2605 target_stop (inferior_ptid
);
2607 /* The user requested an `attach', so stop all threads of this
2609 target_stop (pid_to_ptid (ptid_get_pid (inferior_ptid
)));
2612 /* Some system don't generate traps when attaching to inferior.
2613 E.g. Mach 3 or GNU hurd. */
2614 if (!target_attach_no_wait
)
2616 struct inferior
*inferior
= current_inferior ();
2618 /* Careful here. See comments in inferior.h. Basically some
2619 OSes don't ignore SIGSTOPs on continue requests anymore. We
2620 need a way for handle_inferior_event to reset the stop_signal
2621 variable after an attach, and this is what
2622 STOP_QUIETLY_NO_SIGSTOP is for. */
2623 inferior
->control
.stop_soon
= STOP_QUIETLY_NO_SIGSTOP
;
2625 if (target_can_async_p ())
2627 /* sync_execution mode. Wait for stop. */
2628 struct attach_command_continuation_args
*a
;
2630 a
= xmalloc (sizeof (*a
));
2631 a
->args
= xstrdup (args
);
2632 a
->from_tty
= from_tty
;
2633 a
->async_exec
= async_exec
;
2634 add_inferior_continuation (attach_command_continuation
, a
,
2635 attach_command_continuation_free_args
);
2636 discard_cleanups (back_to
);
2640 wait_for_inferior ();
2643 attach_command_post_wait (args
, from_tty
, async_exec
);
2644 discard_cleanups (back_to
);
2647 /* We had just found out that the target was already attached to an
2648 inferior. PTID points at a thread of this new inferior, that is
2649 the most likely to be stopped right now, but not necessarily so.
2650 The new inferior is assumed to be already added to the inferior
2651 list at this point. If LEAVE_RUNNING, then leave the threads of
2652 this inferior running, except those we've explicitly seen reported
2656 notice_new_inferior (ptid_t ptid
, int leave_running
, int from_tty
)
2658 struct cleanup
* old_chain
;
2661 old_chain
= make_cleanup (null_cleanup
, NULL
);
2663 /* If in non-stop, leave threads as running as they were. If
2664 they're stopped for some reason other than us telling it to, the
2665 target reports a signal != GDB_SIGNAL_0. We don't try to
2666 resume threads with such a stop signal. */
2667 async_exec
= non_stop
;
2669 if (!ptid_equal (inferior_ptid
, null_ptid
))
2670 make_cleanup_restore_current_thread ();
2672 switch_to_thread (ptid
);
2674 /* When we "notice" a new inferior we need to do all the things we
2675 would normally do if we had just attached to it. */
2677 if (is_executing (inferior_ptid
))
2679 struct inferior
*inferior
= current_inferior ();
2681 /* We're going to install breakpoints, and poke at memory,
2682 ensure that the inferior is stopped for a moment while we do
2684 target_stop (inferior_ptid
);
2686 inferior
->control
.stop_soon
= STOP_QUIETLY_REMOTE
;
2688 /* Wait for stop before proceeding. */
2689 if (target_can_async_p ())
2691 struct attach_command_continuation_args
*a
;
2693 a
= xmalloc (sizeof (*a
));
2694 a
->args
= xstrdup ("");
2695 a
->from_tty
= from_tty
;
2696 a
->async_exec
= async_exec
;
2697 add_inferior_continuation (attach_command_continuation
, a
,
2698 attach_command_continuation_free_args
);
2700 do_cleanups (old_chain
);
2704 wait_for_inferior ();
2707 async_exec
= leave_running
;
2708 attach_command_post_wait ("" /* args */, from_tty
, async_exec
);
2710 do_cleanups (old_chain
);
2715 * takes a program previously attached to and detaches it.
2716 * The program resumes execution and will no longer stop
2717 * on signals, etc. We better not have left any breakpoints
2718 * in the program or it'll die when it hits one. For this
2719 * to work, it may be necessary for the process to have been
2720 * previously attached. It *might* work if the program was
2721 * started via the normal ptrace (PTRACE_TRACEME).
2725 detach_command (char *args
, int from_tty
)
2727 dont_repeat (); /* Not for the faint of heart. */
2729 if (ptid_equal (inferior_ptid
, null_ptid
))
2730 error (_("The program is not being run."));
2732 disconnect_tracing (from_tty
);
2734 target_detach (args
, from_tty
);
2736 /* If the solist is global across inferiors, don't clear it when we
2737 detach from a single inferior. */
2738 if (!gdbarch_has_global_solist (target_gdbarch ()))
2739 no_shared_libraries (NULL
, from_tty
);
2741 /* If we still have inferiors to debug, then don't mess with their
2743 if (!have_inferiors ())
2744 init_thread_list ();
2746 if (deprecated_detach_hook
)
2747 deprecated_detach_hook ();
2750 /* Disconnect from the current target without resuming it (leaving it
2751 waiting for a debugger).
2753 We'd better not have left any breakpoints in the program or the
2754 next debugger will get confused. Currently only supported for some
2755 remote targets, since the normal attach mechanisms don't work on
2756 stopped processes on some native platforms (e.g. GNU/Linux). */
2759 disconnect_command (char *args
, int from_tty
)
2761 dont_repeat (); /* Not for the faint of heart. */
2762 disconnect_tracing (from_tty
);
2763 target_disconnect (args
, from_tty
);
2764 no_shared_libraries (NULL
, from_tty
);
2765 init_thread_list ();
2766 if (deprecated_detach_hook
)
2767 deprecated_detach_hook ();
2771 interrupt_target_1 (int all_threads
)
2776 ptid
= minus_one_ptid
;
2778 ptid
= inferior_ptid
;
2781 /* Tag the thread as having been explicitly requested to stop, so
2782 other parts of gdb know not to resume this thread automatically,
2783 if it was stopped due to an internal event. Limit this to
2784 non-stop mode, as when debugging a multi-threaded application in
2785 all-stop mode, we will only get one stop event --- it's undefined
2786 which thread will report the event. */
2788 set_stop_requested (ptid
, 1);
2791 /* Stop the execution of the target while running in async mode, in
2792 the backgound. In all-stop, stop the whole process. In non-stop
2793 mode, stop the current thread only by default, or stop all threads
2794 if the `-a' switch is used. */
2796 /* interrupt [-a] */
2798 interrupt_target_command (char *args
, int from_tty
)
2800 if (target_can_async_p ())
2802 int all_threads
= 0;
2804 dont_repeat (); /* Not for the faint of heart. */
2807 && strncmp (args
, "-a", sizeof ("-a") - 1) == 0)
2810 if (!non_stop
&& all_threads
)
2811 error (_("-a is meaningless in all-stop mode."));
2813 interrupt_target_1 (all_threads
);
2818 print_float_info (struct ui_file
*file
,
2819 struct frame_info
*frame
, const char *args
)
2821 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
2823 if (gdbarch_print_float_info_p (gdbarch
))
2824 gdbarch_print_float_info (gdbarch
, file
, frame
, args
);
2828 int printed_something
= 0;
2831 regnum
< gdbarch_num_regs (gdbarch
)
2832 + gdbarch_num_pseudo_regs (gdbarch
);
2835 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, float_reggroup
))
2837 printed_something
= 1;
2838 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
2841 if (!printed_something
)
2842 fprintf_filtered (file
, "No floating-point info "
2843 "available for this processor.\n");
2848 float_info (char *args
, int from_tty
)
2850 if (!target_has_registers
)
2851 error (_("The program has no registers now."));
2853 print_float_info (gdb_stdout
, get_selected_frame (NULL
), args
);
2857 unset_command (char *args
, int from_tty
)
2859 printf_filtered (_("\"unset\" must be followed by the "
2860 "name of an unset subcommand.\n"));
2861 help_list (unsetlist
, "unset ", -1, gdb_stdout
);
2864 /* Implement `info proc' family of commands. */
2867 info_proc_cmd_1 (char *args
, enum info_proc_what what
, int from_tty
)
2869 struct gdbarch
*gdbarch
= get_current_arch ();
2871 if (!target_info_proc (args
, what
))
2873 if (gdbarch_info_proc_p (gdbarch
))
2874 gdbarch_info_proc (gdbarch
, args
, what
);
2876 error (_("Not supported on this target."));
2880 /* Implement `info proc' when given without any futher parameters. */
2883 info_proc_cmd (char *args
, int from_tty
)
2885 info_proc_cmd_1 (args
, IP_MINIMAL
, from_tty
);
2888 /* Implement `info proc mappings'. */
2891 info_proc_cmd_mappings (char *args
, int from_tty
)
2893 info_proc_cmd_1 (args
, IP_MAPPINGS
, from_tty
);
2896 /* Implement `info proc stat'. */
2899 info_proc_cmd_stat (char *args
, int from_tty
)
2901 info_proc_cmd_1 (args
, IP_STAT
, from_tty
);
2904 /* Implement `info proc status'. */
2907 info_proc_cmd_status (char *args
, int from_tty
)
2909 info_proc_cmd_1 (args
, IP_STATUS
, from_tty
);
2912 /* Implement `info proc cwd'. */
2915 info_proc_cmd_cwd (char *args
, int from_tty
)
2917 info_proc_cmd_1 (args
, IP_CWD
, from_tty
);
2920 /* Implement `info proc cmdline'. */
2923 info_proc_cmd_cmdline (char *args
, int from_tty
)
2925 info_proc_cmd_1 (args
, IP_CMDLINE
, from_tty
);
2928 /* Implement `info proc exe'. */
2931 info_proc_cmd_exe (char *args
, int from_tty
)
2933 info_proc_cmd_1 (args
, IP_EXE
, from_tty
);
2936 /* Implement `info proc all'. */
2939 info_proc_cmd_all (char *args
, int from_tty
)
2941 info_proc_cmd_1 (args
, IP_ALL
, from_tty
);
2945 _initialize_infcmd (void)
2947 static struct cmd_list_element
*info_proc_cmdlist
;
2948 struct cmd_list_element
*c
= NULL
;
2951 /* Add the filename of the terminal connected to inferior I/O. */
2952 add_setshow_filename_cmd ("inferior-tty", class_run
,
2953 &inferior_io_terminal_scratch
, _("\
2954 Set terminal for future runs of program being debugged."), _("\
2955 Show terminal for future runs of program being debugged."), _("\
2956 Usage: set inferior-tty /dev/pts/1"),
2957 set_inferior_tty_command
,
2958 show_inferior_tty_command
,
2959 &setlist
, &showlist
);
2960 add_com_alias ("tty", "set inferior-tty", class_alias
, 0);
2963 add_setshow_string_noescape_cmd (cmd_name
, class_run
,
2964 &inferior_args_scratch
, _("\
2965 Set argument list to give program being debugged when it is started."), _("\
2966 Show argument list to give program being debugged when it is started."), _("\
2967 Follow this command with any number of args, to be passed to the program."),
2970 &setlist
, &showlist
);
2971 c
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
2972 gdb_assert (c
!= NULL
);
2973 set_cmd_completer (c
, filename_completer
);
2975 c
= add_cmd ("environment", no_class
, environment_info
, _("\
2976 The environment to give the program, or one variable's value.\n\
2977 With an argument VAR, prints the value of environment variable VAR to\n\
2978 give the program being debugged. With no arguments, prints the entire\n\
2979 environment to be given to the program."), &showlist
);
2980 set_cmd_completer (c
, noop_completer
);
2982 add_prefix_cmd ("unset", no_class
, unset_command
,
2983 _("Complement to certain \"set\" commands."),
2984 &unsetlist
, "unset ", 0, &cmdlist
);
2986 c
= add_cmd ("environment", class_run
, unset_environment_command
, _("\
2987 Cancel environment variable VAR for the program.\n\
2988 This does not affect the program until the next \"run\" command."),
2990 set_cmd_completer (c
, noop_completer
);
2992 c
= add_cmd ("environment", class_run
, set_environment_command
, _("\
2993 Set environment variable value to give the program.\n\
2994 Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\
2995 VALUES of environment variables are uninterpreted strings.\n\
2996 This does not affect the program until the next \"run\" command."),
2998 set_cmd_completer (c
, noop_completer
);
3000 c
= add_com ("path", class_files
, path_command
, _("\
3001 Add directory DIR(s) to beginning of search path for object files.\n\
3002 $cwd in the path means the current working directory.\n\
3003 This path is equivalent to the $PATH shell variable. It is a list of\n\
3004 directories, separated by colons. These directories are searched to find\n\
3005 fully linked executable files and separately compiled object files as \
3007 set_cmd_completer (c
, filename_completer
);
3009 c
= add_cmd ("paths", no_class
, path_info
, _("\
3010 Current search path for finding object files.\n\
3011 $cwd in the path means the current working directory.\n\
3012 This path is equivalent to the $PATH shell variable. It is a list of\n\
3013 directories, separated by colons. These directories are searched to find\n\
3014 fully linked executable files and separately compiled object files as \
3017 set_cmd_completer (c
, noop_completer
);
3019 add_prefix_cmd ("kill", class_run
, kill_command
,
3020 _("Kill execution of program being debugged."),
3021 &killlist
, "kill ", 0, &cmdlist
);
3023 add_com ("attach", class_run
, attach_command
, _("\
3024 Attach to a process or file outside of GDB.\n\
3025 This command attaches to another target, of the same type as your last\n\
3026 \"target\" command (\"info files\" will show your target stack).\n\
3027 The command may take as argument a process id or a device file.\n\
3028 For a process id, you must have permission to send the process a signal,\n\
3029 and it must have the same effective uid as the debugger.\n\
3030 When using \"attach\" with a process id, the debugger finds the\n\
3031 program running in the process, looking first in the current working\n\
3032 directory, or (if not found there) using the source file search path\n\
3033 (see the \"directory\" command). You can also use the \"file\" command\n\
3034 to specify the program, and to load its symbol table."));
3036 add_prefix_cmd ("detach", class_run
, detach_command
, _("\
3037 Detach a process or file previously attached.\n\
3038 If a process, it is no longer traced, and it continues its execution. If\n\
3039 you were debugging a file, the file is closed and gdb no longer accesses it."),
3040 &detachlist
, "detach ", 0, &cmdlist
);
3042 add_com ("disconnect", class_run
, disconnect_command
, _("\
3043 Disconnect from a target.\n\
3044 The target will wait for another debugger to connect. Not available for\n\
3047 c
= add_com ("signal", class_run
, signal_command
, _("\
3048 Continue program with the specified signal.\n\
3049 Usage: signal SIGNAL\n\
3050 The SIGNAL argument is processed the same as the handle command.\n\
3052 An argument of \"0\" means continue the program without sending it a signal.\n\
3053 This is useful in cases where the program stopped because of a signal,\n\
3054 and you want to resume the program while discarding the signal."));
3055 set_cmd_completer (c
, signal_completer
);
3057 add_com ("stepi", class_run
, stepi_command
, _("\
3058 Step one instruction exactly.\n\
3060 Argument N means step N times (or till program stops for another \
3062 add_com_alias ("si", "stepi", class_alias
, 0);
3064 add_com ("nexti", class_run
, nexti_command
, _("\
3065 Step one instruction, but proceed through subroutine calls.\n\
3067 Argument N means step N times (or till program stops for another \
3069 add_com_alias ("ni", "nexti", class_alias
, 0);
3071 add_com ("finish", class_run
, finish_command
, _("\
3072 Execute until selected stack frame returns.\n\
3074 Upon return, the value returned is printed and put in the value history."));
3075 add_com_alias ("fin", "finish", class_run
, 1);
3077 add_com ("next", class_run
, next_command
, _("\
3078 Step program, proceeding through subroutine calls.\n\
3080 Unlike \"step\", if the current source line calls a subroutine,\n\
3081 this command does not enter the subroutine, but instead steps over\n\
3082 the call, in effect treating it as a single source line."));
3083 add_com_alias ("n", "next", class_run
, 1);
3085 add_com_alias ("S", "next", class_run
, 1);
3087 add_com ("step", class_run
, step_command
, _("\
3088 Step program until it reaches a different source line.\n\
3090 Argument N means step N times (or till program stops for another \
3092 add_com_alias ("s", "step", class_run
, 1);
3094 c
= add_com ("until", class_run
, until_command
, _("\
3095 Execute until the program reaches a source line greater than the current\n\
3096 or a specified location (same args as break command) within the current \
3098 set_cmd_completer (c
, location_completer
);
3099 add_com_alias ("u", "until", class_run
, 1);
3101 c
= add_com ("advance", class_run
, advance_command
, _("\
3102 Continue the program up to the given location (same form as args for break \
3104 Execution will also stop upon exit from the current stack frame."));
3105 set_cmd_completer (c
, location_completer
);
3107 c
= add_com ("jump", class_run
, jump_command
, _("\
3108 Continue program being debugged at specified line or address.\n\
3109 Usage: jump <location>\n\
3110 Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\
3111 for an address to start at."));
3112 set_cmd_completer (c
, location_completer
);
3113 add_com_alias ("j", "jump", class_run
, 1);
3117 c
= add_com ("go", class_run
, go_command
, _("\
3118 Usage: go <location>\n\
3119 Continue program being debugged, stopping at specified line or \n\
3121 Give as argument either LINENUM or *ADDR, where ADDR is an \n\
3122 expression for an address to start at.\n\
3123 This command is a combination of tbreak and jump."));
3124 set_cmd_completer (c
, location_completer
);
3128 add_com_alias ("g", "go", class_run
, 1);
3130 add_com ("continue", class_run
, continue_command
, _("\
3131 Continue program being debugged, after signal or breakpoint.\n\
3132 Usage: continue [N]\n\
3133 If proceeding from breakpoint, a number N may be used as an argument,\n\
3134 which means to set the ignore count of that breakpoint to N - 1 (so that\n\
3135 the breakpoint won't break until the Nth time it is reached).\n\
3137 If non-stop mode is enabled, continue only the current thread,\n\
3138 otherwise all the threads in the program are continued. To \n\
3139 continue all stopped threads in non-stop mode, use the -a option.\n\
3140 Specifying -a and an ignore count simultaneously is an error."));
3141 add_com_alias ("c", "cont", class_run
, 1);
3142 add_com_alias ("fg", "cont", class_run
, 1);
3144 c
= add_com ("run", class_run
, run_command
, _("\
3145 Start debugged program. You may specify arguments to give it.\n\
3146 Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\
3147 Input and output redirection with \">\", \"<\", or \">>\" are also \
3149 With no arguments, uses arguments last specified (with \"run\" \
3150 or \"set args\").\n\
3151 To cancel previous arguments and run with no arguments,\n\
3152 use \"set args\" without arguments."));
3153 set_cmd_completer (c
, filename_completer
);
3154 add_com_alias ("r", "run", class_run
, 1);
3156 add_com ("R", class_run
, run_no_args_command
,
3157 _("Start debugged program with no arguments."));
3159 c
= add_com ("start", class_run
, start_command
, _("\
3160 Run the debugged program until the beginning of the main procedure.\n\
3161 You may specify arguments to give to your program, just as with the\n\
3162 \"run\" command."));
3163 set_cmd_completer (c
, filename_completer
);
3165 add_com ("interrupt", class_run
, interrupt_target_command
,
3166 _("Interrupt the execution of the debugged program.\n\
3167 If non-stop mode is enabled, interrupt only the current thread,\n\
3168 otherwise all the threads in the program are stopped. To \n\
3169 interrupt all running threads in non-stop mode, use the -a option."));
3171 add_info ("registers", nofp_registers_info
, _("\
3172 List of integer registers and their contents, for selected stack frame.\n\
3173 Register name as argument means describe only that register."));
3174 add_info_alias ("r", "registers", 1);
3177 add_com ("lr", class_info
, nofp_registers_info
, _("\
3178 List of integer registers and their contents, for selected stack frame.\n\
3179 Register name as argument means describe only that register."));
3180 add_info ("all-registers", all_registers_info
, _("\
3181 List of all registers and their contents, for selected stack frame.\n\
3182 Register name as argument means describe only that register."));
3184 add_info ("program", program_info
,
3185 _("Execution status of the program."));
3187 add_info ("float", float_info
,
3188 _("Print the status of the floating point unit\n"));
3190 add_info ("vector", vector_info
,
3191 _("Print the status of the vector unit\n"));
3193 add_prefix_cmd ("proc", class_info
, info_proc_cmd
,
3195 Show /proc process information about any running process.\n\
3196 Specify any process id, or use the program being debugged by default."),
3197 &info_proc_cmdlist
, "info proc ",
3198 1/*allow-unknown*/, &infolist
);
3200 add_cmd ("mappings", class_info
, info_proc_cmd_mappings
, _("\
3201 List of mapped memory regions."),
3202 &info_proc_cmdlist
);
3204 add_cmd ("stat", class_info
, info_proc_cmd_stat
, _("\
3205 List process info from /proc/PID/stat."),
3206 &info_proc_cmdlist
);
3208 add_cmd ("status", class_info
, info_proc_cmd_status
, _("\
3209 List process info from /proc/PID/status."),
3210 &info_proc_cmdlist
);
3212 add_cmd ("cwd", class_info
, info_proc_cmd_cwd
, _("\
3213 List current working directory of the process."),
3214 &info_proc_cmdlist
);
3216 add_cmd ("cmdline", class_info
, info_proc_cmd_cmdline
, _("\
3217 List command line arguments of the process."),
3218 &info_proc_cmdlist
);
3220 add_cmd ("exe", class_info
, info_proc_cmd_exe
, _("\
3221 List absolute filename for executable of the process."),
3222 &info_proc_cmdlist
);
3224 add_cmd ("all", class_info
, info_proc_cmd_all
, _("\
3225 List all available /proc info."),
3226 &info_proc_cmdlist
);