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"
59 #include "cli/cli-utils.h"
61 /* Local functions: */
63 static void nofp_registers_info (char *, int);
65 static void print_return_value (struct value
*function
,
66 struct type
*value_type
);
68 static void until_next_command (int);
70 static void until_command (char *, int);
72 static void path_info (char *, int);
74 static void path_command (char *, int);
76 static void unset_command (char *, int);
78 static void float_info (char *, int);
80 static void disconnect_command (char *, int);
82 static void unset_environment_command (char *, int);
84 static void set_environment_command (char *, int);
86 static void environment_info (char *, int);
88 static void program_info (char *, int);
90 static void finish_command (char *, int);
92 static void signal_command (char *, int);
94 static void jump_command (char *, int);
96 static void step_1 (int, int, char *);
97 static void step_once (int skip_subroutines
, int single_inst
,
98 int count
, int thread
);
100 static void next_command (char *, int);
102 static void step_command (char *, int);
104 static void run_command (char *, int);
106 static void run_no_args_command (char *args
, int from_tty
);
108 static void go_command (char *line_no
, int from_tty
);
110 static int strip_bg_char (char **);
112 void _initialize_infcmd (void);
114 #define ERROR_NO_INFERIOR \
115 if (!target_has_execution) error (_("The program is not being run."));
117 /* Scratch area where string containing arguments to give to the
118 program will be stored by 'set args'. As soon as anything is
119 stored, notice_args_set will move it into per-inferior storage.
120 Arguments are separated by spaces. Empty string (pointer to '\0')
123 static char *inferior_args_scratch
;
125 /* Scratch area where 'set inferior-tty' will store user-provided value.
126 We'll immediate copy it into per-inferior storage. */
128 static char *inferior_io_terminal_scratch
;
130 /* Pid of our debugged inferior, or 0 if no inferior now.
131 Since various parts of infrun.c test this to see whether there is a program
132 being debugged it should be nonzero (currently 3 is used) for remote
135 ptid_t inferior_ptid
;
137 /* Address at which inferior stopped. */
141 /* Nonzero if stopped due to completion of a stack dummy routine. */
143 enum stop_stack_kind stop_stack_dummy
;
145 /* Nonzero if stopped due to a random (unexpected) signal in inferior
148 int stopped_by_random_signal
;
151 /* Accessor routines. */
153 /* Set the io terminal for the current inferior. Ownership of
154 TERMINAL_NAME is not transferred. */
157 set_inferior_io_terminal (const char *terminal_name
)
159 xfree (current_inferior ()->terminal
);
160 current_inferior ()->terminal
= terminal_name
? xstrdup (terminal_name
) : 0;
164 get_inferior_io_terminal (void)
166 return current_inferior ()->terminal
;
170 set_inferior_tty_command (char *args
, int from_tty
,
171 struct cmd_list_element
*c
)
173 /* CLI has assigned the user-provided value to inferior_io_terminal_scratch.
174 Now route it to current inferior. */
175 set_inferior_io_terminal (inferior_io_terminal_scratch
);
179 show_inferior_tty_command (struct ui_file
*file
, int from_tty
,
180 struct cmd_list_element
*c
, const char *value
)
182 /* Note that we ignore the passed-in value in favor of computing it
184 const char *inferior_io_terminal
= get_inferior_io_terminal ();
186 if (inferior_io_terminal
== NULL
)
187 inferior_io_terminal
= "";
188 fprintf_filtered (gdb_stdout
,
189 _("Terminal for future runs of program being debugged "
190 "is \"%s\".\n"), inferior_io_terminal
);
194 get_inferior_args (void)
196 if (current_inferior ()->argc
!= 0)
200 n
= construct_inferior_arguments (current_inferior ()->argc
,
201 current_inferior ()->argv
);
202 set_inferior_args (n
);
206 if (current_inferior ()->args
== NULL
)
207 current_inferior ()->args
= xstrdup ("");
209 return current_inferior ()->args
;
212 /* Set the arguments for the current inferior. Ownership of
213 NEWARGS is not transferred. */
216 set_inferior_args (char *newargs
)
218 xfree (current_inferior ()->args
);
219 current_inferior ()->args
= newargs
? xstrdup (newargs
) : NULL
;
220 current_inferior ()->argc
= 0;
221 current_inferior ()->argv
= 0;
225 set_inferior_args_vector (int argc
, char **argv
)
227 current_inferior ()->argc
= argc
;
228 current_inferior ()->argv
= argv
;
231 /* Notice when `set args' is run. */
233 set_args_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
235 /* CLI has assigned the user-provided value to inferior_args_scratch.
236 Now route it to current inferior. */
237 set_inferior_args (inferior_args_scratch
);
240 /* Notice when `show args' is run. */
242 show_args_command (struct ui_file
*file
, int from_tty
,
243 struct cmd_list_element
*c
, const char *value
)
245 /* Note that we ignore the passed-in value in favor of computing it
247 deprecated_show_value_hack (file
, from_tty
, c
, get_inferior_args ());
251 /* Compute command-line string given argument vector. This does the
252 same shell processing as fork_inferior. */
254 construct_inferior_arguments (int argc
, char **argv
)
258 if (STARTUP_WITH_SHELL
)
261 /* This holds all the characters considered special to the
263 char *special
= "\"!&*|[]{}<>?`~^=;, \t\n";
264 const char quote
= '"';
266 /* This holds all the characters considered special to the
267 typical Unix shells. We include `^' because the SunOS
268 /bin/sh treats it as a synonym for `|'. */
269 char *special
= "\"!#$&*()\\|[]{}<>?'`~^; \t\n";
270 const char quote
= '\'';
276 /* We over-compute the size. It shouldn't matter. */
277 for (i
= 0; i
< argc
; ++i
)
278 length
+= 3 * strlen (argv
[i
]) + 1 + 2 * (argv
[i
][0] == '\0');
280 result
= (char *) xmalloc (length
);
283 for (i
= 0; i
< argc
; ++i
)
288 /* Need to handle empty arguments specially. */
289 if (argv
[i
][0] == '\0')
299 if (strpbrk (argv
[i
], special
))
305 for (cp
= argv
[i
]; *cp
; ++cp
)
309 /* A newline cannot be quoted with a backslash (it
310 just disappears), only by putting it inside
321 if (strchr (special
, *cp
) != NULL
)
337 /* In this case we can't handle arguments that contain spaces,
338 tabs, or newlines -- see breakup_args(). */
342 for (i
= 0; i
< argc
; ++i
)
344 char *cp
= strchr (argv
[i
], ' ');
346 cp
= strchr (argv
[i
], '\t');
348 cp
= strchr (argv
[i
], '\n');
350 error (_("can't handle command-line "
351 "argument containing whitespace"));
352 length
+= strlen (argv
[i
]) + 1;
355 result
= (char *) xmalloc (length
);
357 for (i
= 0; i
< argc
; ++i
)
360 strcat (result
, " ");
361 strcat (result
, argv
[i
]);
369 /* This function detects whether or not a '&' character (indicating
370 background execution) has been added as *the last* of the arguments ARGS
371 of a command. If it has, it removes it and returns 1. Otherwise it
372 does nothing and returns 0. */
374 strip_bg_char (char **args
)
378 p
= strchr (*args
, '&');
382 if (p
== (*args
+ strlen (*args
) - 1))
384 if (strlen (*args
) > 1)
388 while (*p
== ' ' || *p
== '\t');
399 /* Common actions to take after creating any sort of inferior, by any
400 means (running, attaching, connecting, et cetera). The target
401 should be stopped. */
404 post_create_inferior (struct target_ops
*target
, int from_tty
)
406 volatile struct gdb_exception ex
;
408 /* Be sure we own the terminal in case write operations are performed. */
409 target_terminal_ours ();
411 /* If the target hasn't taken care of this already, do it now.
412 Targets which need to access registers during to_open,
413 to_create_inferior, or to_attach should do it earlier; but many
415 target_find_description ();
417 /* Now that we know the register layout, retrieve current PC. But
418 if the PC is unavailable (e.g., we're opening a core file with
419 missing registers info), ignore it. */
421 TRY_CATCH (ex
, RETURN_MASK_ERROR
)
423 stop_pc
= regcache_read_pc (get_current_regcache ());
425 if (ex
.reason
< 0 && ex
.error
!= NOT_AVAILABLE_ERROR
)
426 throw_exception (ex
);
430 const unsigned solib_add_generation
431 = current_program_space
->solib_add_generation
;
433 /* Create the hooks to handle shared library load and unload
435 solib_create_inferior_hook (from_tty
);
437 if (current_program_space
->solib_add_generation
== solib_add_generation
)
439 /* The platform-specific hook should load initial shared libraries,
440 but didn't. FROM_TTY will be incorrectly 0 but such solib
441 targets should be fixed anyway. Call it only after the solib
442 target has been initialized by solib_create_inferior_hook. */
445 warning (_("platform-specific solib_create_inferior_hook did "
446 "not load initial shared libraries."));
448 /* If the solist is global across processes, there's no need to
450 if (!gdbarch_has_global_solist (target_gdbarch ()))
451 solib_add (NULL
, 0, target
, auto_solib_add
);
455 /* If the user sets watchpoints before execution having started,
456 then she gets software watchpoints, because GDB can't know which
457 target will end up being pushed, or if it supports hardware
458 watchpoints or not. breakpoint_re_set takes care of promoting
459 watchpoints to hardware watchpoints if possible, however, if this
460 new inferior doesn't load shared libraries or we don't pull in
461 symbols from any other source on this target/arch,
462 breakpoint_re_set is never called. Call it now so that software
463 watchpoints get a chance to be promoted to hardware watchpoints
464 if the now pushed target supports hardware watchpoints. */
465 breakpoint_re_set ();
467 observer_notify_inferior_created (target
, from_tty
);
470 /* Kill the inferior if already running. This function is designed
471 to be called when we are about to start the execution of the program
472 from the beginning. Ask the user to confirm that he wants to restart
473 the program being debugged when FROM_TTY is non-null. */
476 kill_if_already_running (int from_tty
)
478 if (! ptid_equal (inferior_ptid
, null_ptid
) && target_has_execution
)
480 /* Bail out before killing the program if we will not be able to
482 target_require_runnable ();
485 && !query (_("The program being debugged has been started already.\n\
486 Start it from the beginning? ")))
487 error (_("Program not restarted."));
492 /* Implement the "run" command. If TBREAK_AT_MAIN is set, then insert
493 a temporary breakpoint at the begining of the main program before
494 running the program. */
497 run_command_1 (char *args
, int from_tty
, int tbreak_at_main
)
500 struct cleanup
*old_chain
;
502 struct ui_out
*uiout
= current_uiout
;
506 kill_if_already_running (from_tty
);
508 init_wait_for_inferior ();
509 clear_breakpoint_hit_counts ();
511 /* Clean up any leftovers from other runs. Some other things from
512 this function should probably be moved into target_pre_inferior. */
513 target_pre_inferior (from_tty
);
515 /* The comment here used to read, "The exec file is re-read every
516 time we do a generic_mourn_inferior, so we just have to worry
517 about the symbol file." The `generic_mourn_inferior' function
518 gets called whenever the program exits. However, suppose the
519 program exits, and *then* the executable file changes? We need
520 to check again here. Since reopen_exec_file doesn't do anything
521 if the timestamp hasn't changed, I don't see the harm. */
525 /* Insert the temporary breakpoint if a location was specified. */
527 tbreak_command (main_name (), 0);
529 exec_file
= (char *) get_exec_file (0);
531 if (non_stop
&& !target_supports_non_stop ())
532 error (_("The target does not support running in non-stop mode."));
534 /* We keep symbols from add-symbol-file, on the grounds that the
535 user might want to add some symbols before running the program
536 (right?). But sometimes (dynamic loading where the user manually
537 introduces the new symbols with add-symbol-file), the code which
538 the symbols describe does not persist between runs. Currently
539 the user has to manually nuke all symbols between runs if they
540 want them to go away (PR 2207). This is probably reasonable. */
544 if (target_can_async_p ())
545 async_disable_stdin ();
549 int async_exec
= strip_bg_char (&args
);
551 /* If we get a request for running in the bg but the target
552 doesn't support it, error out. */
553 if (async_exec
&& !target_can_async_p ())
554 error (_("Asynchronous execution not supported on this target."));
556 /* If we don't get a request of running in the bg, then we need
557 to simulate synchronous (fg) execution. */
558 if (!async_exec
&& target_can_async_p ())
560 /* Simulate synchronous execution. */
561 async_disable_stdin ();
564 /* If there were other args, beside '&', process them. */
566 set_inferior_args (args
);
571 ui_out_field_string (uiout
, NULL
, "Starting program");
572 ui_out_text (uiout
, ": ");
574 ui_out_field_string (uiout
, "execfile", exec_file
);
575 ui_out_spaces (uiout
, 1);
576 /* We call get_inferior_args() because we might need to compute
578 ui_out_field_string (uiout
, "infargs", get_inferior_args ());
579 ui_out_text (uiout
, "\n");
580 ui_out_flush (uiout
);
583 /* We call get_inferior_args() because we might need to compute
585 target_create_inferior (exec_file
, get_inferior_args (),
586 environ_vector (current_inferior ()->environment
),
589 /* We're starting off a new process. When we get out of here, in
590 non-stop mode, finish the state of all threads of that process,
591 but leave other threads alone, as they may be stopped in internal
592 events --- the frontend shouldn't see them as stopped. In
593 all-stop, always finish the state of all threads, as we may be
594 resuming more than just the new process. */
596 ptid
= pid_to_ptid (ptid_get_pid (inferior_ptid
));
598 ptid
= minus_one_ptid
;
599 old_chain
= make_cleanup (finish_thread_state_cleanup
, &ptid
);
601 /* Pass zero for FROM_TTY, because at this point the "run" command
602 has done its thing; now we are setting up the running program. */
603 post_create_inferior (¤t_target
, 0);
605 /* Start the target running. Do not use -1 continuation as it would skip
606 breakpoint right at the entry point. */
607 proceed (regcache_read_pc (get_current_regcache ()), GDB_SIGNAL_0
, 0);
609 /* Since there was no error, there's no need to finish the thread
611 discard_cleanups (old_chain
);
615 run_command (char *args
, int from_tty
)
617 run_command_1 (args
, from_tty
, 0);
621 run_no_args_command (char *args
, int from_tty
)
623 set_inferior_args ("");
627 /* Start the execution of the program up until the beginning of the main
631 start_command (char *args
, int from_tty
)
633 /* Some languages such as Ada need to search inside the program
634 minimal symbols for the location where to put the temporary
635 breakpoint before starting. */
636 if (!have_minimal_symbols ())
637 error (_("No symbol table loaded. Use the \"file\" command."));
639 /* Run the program until reaching the main procedure... */
640 run_command_1 (args
, from_tty
, 1);
644 proceed_thread_callback (struct thread_info
*thread
, void *arg
)
646 /* We go through all threads individually instead of compressing
647 into a single target `resume_all' request, because some threads
648 may be stopped in internal breakpoints/events, or stopped waiting
649 for its turn in the displaced stepping queue (that is, they are
650 running && !executing). The target side has no idea about why
651 the thread is stopped, so a `resume_all' command would resume too
652 much. If/when GDB gains a way to tell the target `hold this
653 thread stopped until I say otherwise', then we can optimize
655 if (!is_stopped (thread
->ptid
))
658 switch_to_thread (thread
->ptid
);
659 clear_proceed_status ();
660 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
665 ensure_valid_thread (void)
667 if (ptid_equal (inferior_ptid
, null_ptid
)
668 || is_exited (inferior_ptid
))
669 error (_("Cannot execute this command without a live selected thread."));
672 /* If the user is looking at trace frames, any resumption of execution
673 is likely to mix up recorded and live target data. So simply
674 disallow those commands. */
677 ensure_not_tfind_mode (void)
679 if (get_traceframe_number () >= 0)
680 error (_("Cannot execute this command while looking at trace frames."));
683 /* Throw an error indicating the current thread is running. */
686 error_is_running (void)
688 error (_("Cannot execute this command while "
689 "the selected thread is running."));
692 /* Calls error_is_running if the current thread is running. */
695 ensure_not_running (void)
697 if (is_running (inferior_ptid
))
702 continue_1 (int all_threads
)
705 ensure_not_tfind_mode ();
707 if (non_stop
&& all_threads
)
709 /* Don't error out if the current thread is running, because
710 there may be other stopped threads. */
711 struct cleanup
*old_chain
;
713 /* Backup current thread and selected frame. */
714 old_chain
= make_cleanup_restore_current_thread ();
716 iterate_over_threads (proceed_thread_callback
, NULL
);
718 /* Restore selected ptid. */
719 do_cleanups (old_chain
);
723 ensure_valid_thread ();
724 ensure_not_running ();
725 clear_proceed_status ();
726 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
730 /* continue [-a] [proceed-count] [&] */
732 continue_command (char *args
, int from_tty
)
738 /* Find out whether we must run in the background. */
740 async_exec
= strip_bg_char (&args
);
742 /* If we must run in the background, but the target can't do it,
744 if (async_exec
&& !target_can_async_p ())
745 error (_("Asynchronous execution not supported on this target."));
747 /* If we are not asked to run in the bg, then prepare to run in the
748 foreground, synchronously. */
749 if (!async_exec
&& target_can_async_p ())
751 /* Simulate synchronous execution. */
752 async_disable_stdin ();
757 if (strncmp (args
, "-a", sizeof ("-a") - 1) == 0)
760 args
+= sizeof ("-a") - 1;
766 if (!non_stop
&& all_threads
)
767 error (_("`-a' is meaningless in all-stop mode."));
769 if (args
!= NULL
&& all_threads
)
770 error (_("Can't resume all threads and specify "
771 "proceed count simultaneously."));
773 /* If we have an argument left, set proceed count of breakpoint we
780 struct thread_info
*tp
;
783 tp
= find_thread_ptid (inferior_ptid
);
787 struct target_waitstatus ws
;
789 get_last_target_status (&last_ptid
, &ws
);
790 tp
= find_thread_ptid (last_ptid
);
793 bs
= tp
->control
.stop_bpstat
;
795 while ((stat
= bpstat_num (&bs
, &num
)) != 0)
798 set_ignore_count (num
,
799 parse_and_eval_long (args
) - 1,
801 /* set_ignore_count prints a message ending with a period.
802 So print two spaces before "Continuing.". */
804 printf_filtered (" ");
808 if (!stopped
&& from_tty
)
811 ("Not stopped at any breakpoint; argument ignored.\n");
816 printf_filtered (_("Continuing.\n"));
818 continue_1 (all_threads
);
821 /* Record the starting point of a "step" or "next" command. */
824 set_step_frame (void)
826 struct symtab_and_line sal
;
828 find_frame_sal (get_current_frame (), &sal
);
829 set_step_info (get_current_frame (), sal
);
832 /* Step until outside of current statement. */
835 step_command (char *count_string
, int from_tty
)
837 step_1 (0, 0, count_string
);
840 /* Likewise, but skip over subroutine calls as if single instructions. */
843 next_command (char *count_string
, int from_tty
)
845 step_1 (1, 0, count_string
);
848 /* Likewise, but step only one instruction. */
851 stepi_command (char *count_string
, int from_tty
)
853 step_1 (0, 1, count_string
);
857 nexti_command (char *count_string
, int from_tty
)
859 step_1 (1, 1, count_string
);
863 delete_longjmp_breakpoint_cleanup (void *arg
)
865 int thread
= * (int *) arg
;
866 delete_longjmp_breakpoint (thread
);
870 step_1 (int skip_subroutines
, int single_inst
, char *count_string
)
873 struct cleanup
*cleanups
= make_cleanup (null_cleanup
, NULL
);
878 ensure_not_tfind_mode ();
879 ensure_valid_thread ();
880 ensure_not_running ();
883 async_exec
= strip_bg_char (&count_string
);
885 /* If we get a request for running in the bg but the target
886 doesn't support it, error out. */
887 if (async_exec
&& !target_can_async_p ())
888 error (_("Asynchronous execution not supported on this target."));
890 /* If we don't get a request of running in the bg, then we need
891 to simulate synchronous (fg) execution. */
892 if (!async_exec
&& target_can_async_p ())
894 /* Simulate synchronous execution. */
895 async_disable_stdin ();
898 count
= count_string
? parse_and_eval_long (count_string
) : 1;
900 if (!single_inst
|| skip_subroutines
) /* Leave si command alone. */
902 struct thread_info
*tp
= inferior_thread ();
904 if (in_thread_list (inferior_ptid
))
905 thread
= pid_to_thread_id (inferior_ptid
);
907 set_longjmp_breakpoint (tp
, get_frame_id (get_current_frame ()));
909 make_cleanup (delete_longjmp_breakpoint_cleanup
, &thread
);
912 /* In synchronous case, all is well; each step_once call will step once. */
913 if (!target_can_async_p ())
915 for (; count
> 0; count
--)
917 step_once (skip_subroutines
, single_inst
, count
, thread
);
919 if (!target_has_execution
)
923 struct thread_info
*tp
= inferior_thread ();
925 if (!tp
->control
.stop_step
|| !tp
->step_multi
)
927 /* If we stopped for some reason that is not stepping
928 there are no further steps to make. */
935 do_cleanups (cleanups
);
939 /* In the case of an asynchronous target things get complicated;
940 do only one step for now, before returning control to the
941 event loop. Let the continuation figure out how many other
942 steps we need to do, and handle them one at the time, through
944 step_once (skip_subroutines
, single_inst
, count
, thread
);
946 /* We are running, and the continuation is installed. It will
947 disable the longjmp breakpoint as appropriate. */
948 discard_cleanups (cleanups
);
952 struct step_1_continuation_args
955 int skip_subroutines
;
960 /* Called after we are done with one step operation, to check whether
961 we need to step again, before we print the prompt and return control
962 to the user. If count is > 1, we will need to do one more call to
963 proceed(), via step_once(). Basically it is like step_once and
964 step_1_continuation are co-recursive. */
966 step_1_continuation (void *args
, int err
)
968 struct step_1_continuation_args
*a
= args
;
970 if (target_has_execution
)
972 struct thread_info
*tp
;
974 tp
= inferior_thread ();
976 && tp
->step_multi
&& tp
->control
.stop_step
)
978 /* There are more steps to make, and we did stop due to
979 ending a stepping range. Do another step. */
980 step_once (a
->skip_subroutines
, a
->single_inst
,
981 a
->count
- 1, a
->thread
);
987 /* We either hit an error, or stopped for some reason that is
988 not stepping, or there are no further steps to make.
990 if (!a
->single_inst
|| a
->skip_subroutines
)
991 delete_longjmp_breakpoint (a
->thread
);
994 /* Do just one step operation. This is useful to implement the 'step
995 n' kind of commands. In case of asynchronous targets, we will have
996 to set up a continuation to be done after the target stops (after
997 this one step). For synch targets, the caller handles further
1001 step_once (int skip_subroutines
, int single_inst
, int count
, int thread
)
1003 struct frame_info
*frame
= get_current_frame ();
1007 /* Don't assume THREAD is a valid thread id. It is set to -1 if
1008 the longjmp breakpoint was not required. Use the
1009 INFERIOR_PTID thread instead, which is the same thread when
1011 struct thread_info
*tp
= inferior_thread ();
1013 clear_proceed_status ();
1020 /* Step at an inlined function behaves like "down". */
1021 if (!skip_subroutines
1022 && inline_skipped_frames (inferior_ptid
))
1026 /* Pretend that we've ran. */
1027 resume_ptid
= user_visible_resume_ptid (1);
1028 set_running (resume_ptid
, 1);
1030 step_into_inline_frame (inferior_ptid
);
1032 step_once (skip_subroutines
, single_inst
, count
- 1, thread
);
1035 /* Pretend that we've stopped. */
1038 if (target_can_async_p ())
1039 inferior_event_handler (INF_EXEC_COMPLETE
, NULL
);
1044 pc
= get_frame_pc (frame
);
1045 find_pc_line_pc_range (pc
,
1046 &tp
->control
.step_range_start
,
1047 &tp
->control
.step_range_end
);
1049 tp
->control
.may_range_step
= 1;
1051 /* If we have no line info, switch to stepi mode. */
1052 if (tp
->control
.step_range_end
== 0 && step_stop_if_no_debug
)
1054 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1055 tp
->control
.may_range_step
= 0;
1057 else if (tp
->control
.step_range_end
== 0)
1061 if (find_pc_partial_function (pc
, &name
,
1062 &tp
->control
.step_range_start
,
1063 &tp
->control
.step_range_end
) == 0)
1064 error (_("Cannot find bounds of current function"));
1066 target_terminal_ours ();
1067 printf_filtered (_("Single stepping until exit from function %s,"
1068 "\nwhich has no line number information.\n"),
1074 /* Say we are stepping, but stop after one insn whatever it does. */
1075 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1076 if (!skip_subroutines
)
1078 Don't step over function calls, not even to functions lacking
1080 tp
->control
.step_over_calls
= STEP_OVER_NONE
;
1083 if (skip_subroutines
)
1084 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1086 tp
->step_multi
= (count
> 1);
1087 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 1);
1089 /* For async targets, register a continuation to do any
1090 additional steps. For sync targets, the caller will handle
1091 further stepping. */
1092 if (target_can_async_p ())
1094 struct step_1_continuation_args
*args
;
1096 args
= xmalloc (sizeof (*args
));
1097 args
->skip_subroutines
= skip_subroutines
;
1098 args
->single_inst
= single_inst
;
1099 args
->count
= count
;
1100 args
->thread
= thread
;
1102 add_intermediate_continuation (tp
, step_1_continuation
, args
, xfree
);
1108 /* Continue program at specified address. */
1111 jump_command (char *arg
, int from_tty
)
1113 struct gdbarch
*gdbarch
= get_current_arch ();
1115 struct symtabs_and_lines sals
;
1116 struct symtab_and_line sal
;
1122 ensure_not_tfind_mode ();
1123 ensure_valid_thread ();
1124 ensure_not_running ();
1126 /* Find out whether we must run in the background. */
1128 async_exec
= strip_bg_char (&arg
);
1130 /* If we must run in the background, but the target can't do it,
1132 if (async_exec
&& !target_can_async_p ())
1133 error (_("Asynchronous execution not supported on this target."));
1136 error_no_arg (_("starting address"));
1138 sals
= decode_line_with_last_displayed (arg
, DECODE_LINE_FUNFIRSTLINE
);
1139 if (sals
.nelts
!= 1)
1141 error (_("Unreasonable jump request"));
1147 if (sal
.symtab
== 0 && sal
.pc
== 0)
1148 error (_("No source file has been specified."));
1150 resolve_sal_pc (&sal
); /* May error out. */
1152 /* See if we are trying to jump to another function. */
1153 fn
= get_frame_function (get_current_frame ());
1154 sfn
= find_pc_function (sal
.pc
);
1155 if (fn
!= NULL
&& sfn
!= fn
)
1157 if (!query (_("Line %d is not in `%s'. Jump anyway? "), sal
.line
,
1158 SYMBOL_PRINT_NAME (fn
)))
1160 error (_("Not confirmed."));
1167 fixup_symbol_section (sfn
, 0);
1168 if (section_is_overlay (SYMBOL_OBJ_SECTION (SYMBOL_OBJFILE (sfn
), sfn
)) &&
1169 !section_is_mapped (SYMBOL_OBJ_SECTION (SYMBOL_OBJFILE (sfn
), sfn
)))
1171 if (!query (_("WARNING!!! Destination is in "
1172 "unmapped overlay! Jump anyway? ")))
1174 error (_("Not confirmed."));
1184 printf_filtered (_("Continuing at "));
1185 fputs_filtered (paddress (gdbarch
, addr
), gdb_stdout
);
1186 printf_filtered (".\n");
1189 /* If we are not asked to run in the bg, then prepare to run in the
1190 foreground, synchronously. */
1191 if (!async_exec
&& target_can_async_p ())
1193 /* Simulate synchronous execution. */
1194 async_disable_stdin ();
1197 clear_proceed_status ();
1198 proceed (addr
, GDB_SIGNAL_0
, 0);
1202 /* Go to line or address in current procedure. */
1204 go_command (char *line_no
, int from_tty
)
1206 if (line_no
== (char *) NULL
|| !*line_no
)
1207 printf_filtered (_("Usage: go <location>\n"));
1210 tbreak_command (line_no
, from_tty
);
1211 jump_command (line_no
, from_tty
);
1216 /* Continue program giving it specified signal. */
1219 signal_command (char *signum_exp
, int from_tty
)
1221 enum gdb_signal oursig
;
1224 dont_repeat (); /* Too dangerous. */
1226 ensure_not_tfind_mode ();
1227 ensure_valid_thread ();
1228 ensure_not_running ();
1230 /* Find out whether we must run in the background. */
1231 if (signum_exp
!= NULL
)
1232 async_exec
= strip_bg_char (&signum_exp
);
1234 /* If we must run in the background, but the target can't do it,
1236 if (async_exec
&& !target_can_async_p ())
1237 error (_("Asynchronous execution not supported on this target."));
1239 /* If we are not asked to run in the bg, then prepare to run in the
1240 foreground, synchronously. */
1241 if (!async_exec
&& target_can_async_p ())
1243 /* Simulate synchronous execution. */
1244 async_disable_stdin ();
1248 error_no_arg (_("signal number"));
1250 /* It would be even slicker to make signal names be valid expressions,
1251 (the type could be "enum $signal" or some such), then the user could
1252 assign them to convenience variables. */
1253 oursig
= gdb_signal_from_name (signum_exp
);
1255 if (oursig
== GDB_SIGNAL_UNKNOWN
)
1257 /* No, try numeric. */
1258 int num
= parse_and_eval_long (signum_exp
);
1261 oursig
= GDB_SIGNAL_0
;
1263 oursig
= gdb_signal_from_command (num
);
1268 if (oursig
== GDB_SIGNAL_0
)
1269 printf_filtered (_("Continuing with no signal.\n"));
1271 printf_filtered (_("Continuing with signal %s.\n"),
1272 gdb_signal_to_name (oursig
));
1275 clear_proceed_status ();
1276 proceed ((CORE_ADDR
) -1, oursig
, 0);
1279 /* Continuation args to be passed to the "until" command
1281 struct until_next_continuation_args
1283 /* The thread that was current when the command was executed. */
1287 /* A continuation callback for until_next_command. */
1290 until_next_continuation (void *arg
, int err
)
1292 struct until_next_continuation_args
*a
= arg
;
1294 delete_longjmp_breakpoint (a
->thread
);
1297 /* Proceed until we reach a different source line with pc greater than
1298 our current one or exit the function. We skip calls in both cases.
1300 Note that eventually this command should probably be changed so
1301 that only source lines are printed out when we hit the breakpoint
1302 we set. This may involve changes to wait_for_inferior and the
1303 proceed status code. */
1306 until_next_command (int from_tty
)
1308 struct frame_info
*frame
;
1310 struct symbol
*func
;
1311 struct symtab_and_line sal
;
1312 struct thread_info
*tp
= inferior_thread ();
1313 int thread
= tp
->num
;
1314 struct cleanup
*old_chain
;
1316 clear_proceed_status ();
1319 frame
= get_current_frame ();
1321 /* Step until either exited from this function or greater
1322 than the current line (if in symbolic section) or pc (if
1325 pc
= get_frame_pc (frame
);
1326 func
= find_pc_function (pc
);
1330 struct bound_minimal_symbol msymbol
= lookup_minimal_symbol_by_pc (pc
);
1332 if (msymbol
.minsym
== NULL
)
1333 error (_("Execution is not within a known function."));
1335 tp
->control
.step_range_start
= SYMBOL_VALUE_ADDRESS (msymbol
.minsym
);
1336 tp
->control
.step_range_end
= pc
;
1340 sal
= find_pc_line (pc
, 0);
1342 tp
->control
.step_range_start
= BLOCK_START (SYMBOL_BLOCK_VALUE (func
));
1343 tp
->control
.step_range_end
= sal
.end
;
1345 tp
->control
.may_range_step
= 1;
1347 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1349 tp
->step_multi
= 0; /* Only one call to proceed */
1351 set_longjmp_breakpoint (tp
, get_frame_id (frame
));
1352 old_chain
= make_cleanup (delete_longjmp_breakpoint_cleanup
, &thread
);
1354 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 1);
1356 if (target_can_async_p () && is_running (inferior_ptid
))
1358 struct until_next_continuation_args
*cont_args
;
1360 discard_cleanups (old_chain
);
1361 cont_args
= XNEW (struct until_next_continuation_args
);
1362 cont_args
->thread
= inferior_thread ()->num
;
1364 add_continuation (tp
, until_next_continuation
, cont_args
, xfree
);
1367 do_cleanups (old_chain
);
1371 until_command (char *arg
, int from_tty
)
1376 ensure_not_tfind_mode ();
1377 ensure_valid_thread ();
1378 ensure_not_running ();
1380 /* Find out whether we must run in the background. */
1382 async_exec
= strip_bg_char (&arg
);
1384 /* If we must run in the background, but the target can't do it,
1386 if (async_exec
&& !target_can_async_p ())
1387 error (_("Asynchronous execution not supported on this target."));
1389 /* If we are not asked to run in the bg, then prepare to run in the
1390 foreground, synchronously. */
1391 if (!async_exec
&& target_can_async_p ())
1393 /* Simulate synchronous execution. */
1394 async_disable_stdin ();
1398 until_break_command (arg
, from_tty
, 0);
1400 until_next_command (from_tty
);
1404 advance_command (char *arg
, int from_tty
)
1409 ensure_not_tfind_mode ();
1410 ensure_valid_thread ();
1411 ensure_not_running ();
1414 error_no_arg (_("a location"));
1416 /* Find out whether we must run in the background. */
1418 async_exec
= strip_bg_char (&arg
);
1420 /* If we must run in the background, but the target can't do it,
1422 if (async_exec
&& !target_can_async_p ())
1423 error (_("Asynchronous execution not supported on this target."));
1425 /* If we are not asked to run in the bg, then prepare to run in the
1426 foreground, synchronously. */
1427 if (!async_exec
&& target_can_async_p ())
1429 /* Simulate synchronous execution. */
1430 async_disable_stdin ();
1433 until_break_command (arg
, from_tty
, 1);
1436 /* Return the value of the result of a function at the end of a 'finish'
1440 get_return_value (struct value
*function
, struct type
*value_type
)
1442 struct regcache
*stop_regs
= stop_registers
;
1443 struct gdbarch
*gdbarch
;
1444 struct value
*value
;
1445 struct cleanup
*cleanup
= make_cleanup (null_cleanup
, NULL
);
1447 /* If stop_registers were not saved, use the current registers. */
1450 stop_regs
= regcache_dup (get_current_regcache ());
1451 make_cleanup_regcache_xfree (stop_regs
);
1454 gdbarch
= get_regcache_arch (stop_regs
);
1456 CHECK_TYPEDEF (value_type
);
1457 gdb_assert (TYPE_CODE (value_type
) != TYPE_CODE_VOID
);
1459 /* FIXME: 2003-09-27: When returning from a nested inferior function
1460 call, it's possible (with no help from the architecture vector)
1461 to locate and return/print a "struct return" value. This is just
1462 a more complicated case of what is already being done in the
1463 inferior function call code. In fact, when inferior function
1464 calls are made async, this will likely be made the norm. */
1466 switch (gdbarch_return_value (gdbarch
, function
, value_type
,
1469 case RETURN_VALUE_REGISTER_CONVENTION
:
1470 case RETURN_VALUE_ABI_RETURNS_ADDRESS
:
1471 case RETURN_VALUE_ABI_PRESERVES_ADDRESS
:
1472 value
= allocate_value (value_type
);
1473 gdbarch_return_value (gdbarch
, function
, value_type
, stop_regs
,
1474 value_contents_raw (value
), NULL
);
1476 case RETURN_VALUE_STRUCT_CONVENTION
:
1480 internal_error (__FILE__
, __LINE__
, _("bad switch"));
1483 do_cleanups (cleanup
);
1488 /* Print the result of a function at the end of a 'finish' command. */
1491 print_return_value (struct value
*function
, struct type
*value_type
)
1493 struct value
*value
= get_return_value (function
, value_type
);
1494 struct ui_out
*uiout
= current_uiout
;
1498 struct value_print_options opts
;
1499 struct ui_file
*stb
;
1500 struct cleanup
*old_chain
;
1503 stb
= mem_fileopen ();
1504 old_chain
= make_cleanup_ui_file_delete (stb
);
1505 ui_out_text (uiout
, "Value returned is ");
1506 ui_out_field_fmt (uiout
, "gdb-result-var", "$%d",
1507 record_latest_value (value
));
1508 ui_out_text (uiout
, " = ");
1509 get_raw_print_options (&opts
);
1510 value_print (value
, stb
, &opts
);
1511 ui_out_field_stream (uiout
, "return-value", stb
);
1512 ui_out_text (uiout
, "\n");
1513 do_cleanups (old_chain
);
1517 ui_out_text (uiout
, "Value returned has type: ");
1518 ui_out_field_string (uiout
, "return-type", TYPE_NAME (value_type
));
1519 ui_out_text (uiout
, ".");
1520 ui_out_text (uiout
, " Cannot determine contents\n");
1524 /* Stuff that needs to be done by the finish command after the target
1525 has stopped. In asynchronous mode, we wait for the target to stop
1526 in the call to poll or select in the event loop, so it is
1527 impossible to do all the stuff as part of the finish_command
1528 function itself. The only chance we have to complete this command
1529 is in fetch_inferior_event, which is called by the event loop as
1530 soon as it detects that the target has stopped. */
1532 struct finish_command_continuation_args
1534 /* The thread that as current when the command was executed. */
1536 struct breakpoint
*breakpoint
;
1537 struct symbol
*function
;
1541 finish_command_continuation (void *arg
, int err
)
1543 struct finish_command_continuation_args
*a
= arg
;
1547 struct thread_info
*tp
= NULL
;
1550 if (!ptid_equal (inferior_ptid
, null_ptid
)
1551 && target_has_execution
1552 && is_stopped (inferior_ptid
))
1554 tp
= inferior_thread ();
1555 bs
= tp
->control
.stop_bpstat
;
1558 if (bpstat_find_breakpoint (bs
, a
->breakpoint
) != NULL
1559 && a
->function
!= NULL
)
1561 struct type
*value_type
;
1563 value_type
= TYPE_TARGET_TYPE (SYMBOL_TYPE (a
->function
));
1565 internal_error (__FILE__
, __LINE__
,
1566 _("finish_command: function has no target type"));
1568 if (TYPE_CODE (value_type
) != TYPE_CODE_VOID
)
1570 volatile struct gdb_exception ex
;
1573 func
= read_var_value (a
->function
, get_current_frame ());
1574 TRY_CATCH (ex
, RETURN_MASK_ALL
)
1576 /* print_return_value can throw an exception in some
1577 circumstances. We need to catch this so that we still
1578 delete the breakpoint. */
1579 print_return_value (func
, value_type
);
1582 exception_print (gdb_stdout
, ex
);
1586 /* We suppress normal call of normal_stop observer and do it
1587 here so that the *stopped notification includes the return
1589 if (bs
!= NULL
&& tp
->control
.proceed_to_finish
)
1590 observer_notify_normal_stop (bs
, 1 /* print frame */);
1593 delete_breakpoint (a
->breakpoint
);
1594 delete_longjmp_breakpoint (a
->thread
);
1598 finish_command_continuation_free_arg (void *arg
)
1603 /* finish_backward -- helper function for finish_command. */
1606 finish_backward (struct symbol
*function
)
1608 struct symtab_and_line sal
;
1609 struct thread_info
*tp
= inferior_thread ();
1611 CORE_ADDR func_addr
;
1613 pc
= get_frame_pc (get_current_frame ());
1615 if (find_pc_partial_function (pc
, NULL
, &func_addr
, NULL
) == 0)
1616 internal_error (__FILE__
, __LINE__
,
1617 _("Finish: couldn't find function."));
1619 sal
= find_pc_line (func_addr
, 0);
1621 tp
->control
.proceed_to_finish
= 1;
1622 /* Special case: if we're sitting at the function entry point,
1623 then all we need to do is take a reverse singlestep. We
1624 don't need to set a breakpoint, and indeed it would do us
1627 Note that this can only happen at frame #0, since there's
1628 no way that a function up the stack can have a return address
1629 that's equal to its entry point. */
1633 struct frame_info
*frame
= get_selected_frame (NULL
);
1634 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
1635 struct symtab_and_line sr_sal
;
1637 /* Set a step-resume at the function's entry point. Once that's
1638 hit, we'll do one more step backwards. */
1641 sr_sal
.pspace
= get_frame_program_space (frame
);
1642 insert_step_resume_breakpoint_at_sal (gdbarch
,
1643 sr_sal
, null_frame_id
);
1645 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
1649 /* We're almost there -- we just need to back up by one more
1651 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1652 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 1);
1656 /* finish_forward -- helper function for finish_command. */
1659 finish_forward (struct symbol
*function
, struct frame_info
*frame
)
1661 struct frame_id frame_id
= get_frame_id (frame
);
1662 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
1663 struct symtab_and_line sal
;
1664 struct thread_info
*tp
= inferior_thread ();
1665 struct breakpoint
*breakpoint
;
1666 struct cleanup
*old_chain
;
1667 struct finish_command_continuation_args
*cargs
;
1668 int thread
= tp
->num
;
1670 sal
= find_pc_line (get_frame_pc (frame
), 0);
1671 sal
.pc
= get_frame_pc (frame
);
1673 breakpoint
= set_momentary_breakpoint (gdbarch
, sal
,
1674 get_stack_frame_id (frame
),
1677 /* set_momentary_breakpoint invalidates FRAME. */
1680 old_chain
= make_cleanup_delete_breakpoint (breakpoint
);
1682 set_longjmp_breakpoint (tp
, frame_id
);
1683 make_cleanup (delete_longjmp_breakpoint_cleanup
, &thread
);
1685 /* We want stop_registers, please... */
1686 tp
->control
.proceed_to_finish
= 1;
1687 cargs
= xmalloc (sizeof (*cargs
));
1689 cargs
->thread
= thread
;
1690 cargs
->breakpoint
= breakpoint
;
1691 cargs
->function
= function
;
1692 add_continuation (tp
, finish_command_continuation
, cargs
,
1693 finish_command_continuation_free_arg
);
1694 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
1696 discard_cleanups (old_chain
);
1697 if (!target_can_async_p ())
1698 do_all_continuations (0);
1701 /* "finish": Set a temporary breakpoint at the place the selected
1702 frame will return to, then continue. */
1705 finish_command (char *arg
, int from_tty
)
1707 struct frame_info
*frame
;
1708 struct symbol
*function
;
1713 ensure_not_tfind_mode ();
1714 ensure_valid_thread ();
1715 ensure_not_running ();
1717 /* Find out whether we must run in the background. */
1719 async_exec
= strip_bg_char (&arg
);
1721 /* If we must run in the background, but the target can't do it,
1723 if (async_exec
&& !target_can_async_p ())
1724 error (_("Asynchronous execution not supported on this target."));
1726 /* If we are not asked to run in the bg, then prepare to run in the
1727 foreground, synchronously. */
1728 if (!async_exec
&& target_can_async_p ())
1730 /* Simulate synchronous execution. */
1731 async_disable_stdin ();
1735 error (_("The \"finish\" command does not take any arguments."));
1737 frame
= get_prev_frame (get_selected_frame (_("No selected frame.")));
1739 error (_("\"finish\" not meaningful in the outermost frame."));
1741 clear_proceed_status ();
1743 /* Finishing from an inline frame is completely different. We don't
1744 try to show the "return value" - no way to locate it. So we do
1745 not need a completion. */
1746 if (get_frame_type (get_selected_frame (_("No selected frame.")))
1749 /* Claim we are stepping in the calling frame. An empty step
1750 range means that we will stop once we aren't in a function
1751 called by that frame. We don't use the magic "1" value for
1752 step_range_end, because then infrun will think this is nexti,
1753 and not step over the rest of this inlined function call. */
1754 struct thread_info
*tp
= inferior_thread ();
1755 struct symtab_and_line empty_sal
;
1757 init_sal (&empty_sal
);
1758 set_step_info (frame
, empty_sal
);
1759 tp
->control
.step_range_start
= get_frame_pc (frame
);
1760 tp
->control
.step_range_end
= tp
->control
.step_range_start
;
1761 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1763 /* Print info on the selected frame, including level number but not
1767 printf_filtered (_("Run till exit from "));
1768 print_stack_frame (get_selected_frame (NULL
), 1, LOCATION
);
1771 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 1);
1775 /* Ignore TAILCALL_FRAME type frames, they were executed already before
1776 entering THISFRAME. */
1777 while (get_frame_type (frame
) == TAILCALL_FRAME
)
1778 frame
= get_prev_frame (frame
);
1780 /* Find the function we will return from. */
1782 function
= find_pc_function (get_frame_pc (get_selected_frame (NULL
)));
1784 /* Print info on the selected frame, including level number but not
1788 if (execution_direction
== EXEC_REVERSE
)
1789 printf_filtered (_("Run back to call of "));
1791 printf_filtered (_("Run till exit from "));
1793 print_stack_frame (get_selected_frame (NULL
), 1, LOCATION
);
1796 if (execution_direction
== EXEC_REVERSE
)
1797 finish_backward (function
);
1799 finish_forward (function
, frame
);
1804 program_info (char *args
, int from_tty
)
1808 struct thread_info
*tp
;
1811 if (!target_has_execution
)
1813 printf_filtered (_("The program being debugged is not being run.\n"));
1818 ptid
= inferior_ptid
;
1821 struct target_waitstatus ws
;
1823 get_last_target_status (&ptid
, &ws
);
1826 if (ptid_equal (ptid
, null_ptid
) || is_exited (ptid
))
1827 error (_("Invalid selected thread."));
1828 else if (is_running (ptid
))
1829 error (_("Selected thread is running."));
1831 tp
= find_thread_ptid (ptid
);
1832 bs
= tp
->control
.stop_bpstat
;
1833 stat
= bpstat_num (&bs
, &num
);
1835 target_files_info ();
1836 printf_filtered (_("Program stopped at %s.\n"),
1837 paddress (target_gdbarch (), stop_pc
));
1838 if (tp
->control
.stop_step
)
1839 printf_filtered (_("It stopped after being stepped.\n"));
1842 /* There may be several breakpoints in the same place, so this
1843 isn't as strange as it seems. */
1848 printf_filtered (_("It stopped at a breakpoint "
1849 "that has since been deleted.\n"));
1852 printf_filtered (_("It stopped at breakpoint %d.\n"), num
);
1853 stat
= bpstat_num (&bs
, &num
);
1856 else if (tp
->suspend
.stop_signal
!= GDB_SIGNAL_0
)
1858 printf_filtered (_("It stopped with signal %s, %s.\n"),
1859 gdb_signal_to_name (tp
->suspend
.stop_signal
),
1860 gdb_signal_to_string (tp
->suspend
.stop_signal
));
1865 printf_filtered (_("Type \"info stack\" or \"info "
1866 "registers\" for more information.\n"));
1871 environment_info (char *var
, int from_tty
)
1875 char *val
= get_in_environ (current_inferior ()->environment
, var
);
1879 puts_filtered (var
);
1880 puts_filtered (" = ");
1881 puts_filtered (val
);
1882 puts_filtered ("\n");
1886 puts_filtered ("Environment variable \"");
1887 puts_filtered (var
);
1888 puts_filtered ("\" not defined.\n");
1893 char **vector
= environ_vector (current_inferior ()->environment
);
1897 puts_filtered (*vector
++);
1898 puts_filtered ("\n");
1904 set_environment_command (char *arg
, int from_tty
)
1906 char *p
, *val
, *var
;
1910 error_no_arg (_("environment variable and value"));
1912 /* Find seperation between variable name and value. */
1913 p
= (char *) strchr (arg
, '=');
1914 val
= (char *) strchr (arg
, ' ');
1916 if (p
!= 0 && val
!= 0)
1918 /* We have both a space and an equals. If the space is before the
1919 equals, walk forward over the spaces til we see a nonspace
1920 (possibly the equals). */
1925 /* Now if the = is after the char following the spaces,
1926 take the char following the spaces. */
1930 else if (val
!= 0 && p
== 0)
1934 error_no_arg (_("environment variable to set"));
1936 if (p
== 0 || p
[1] == 0)
1940 p
= arg
+ strlen (arg
); /* So that savestring below will work. */
1944 /* Not setting variable value to null. */
1946 while (*val
== ' ' || *val
== '\t')
1950 while (p
!= arg
&& (p
[-1] == ' ' || p
[-1] == '\t'))
1953 var
= savestring (arg
, p
- arg
);
1956 printf_filtered (_("Setting environment variable "
1957 "\"%s\" to null value.\n"),
1959 set_in_environ (current_inferior ()->environment
, var
, "");
1962 set_in_environ (current_inferior ()->environment
, var
, val
);
1967 unset_environment_command (char *var
, int from_tty
)
1971 /* If there is no argument, delete all environment variables.
1972 Ask for confirmation if reading from the terminal. */
1973 if (!from_tty
|| query (_("Delete all environment variables? ")))
1975 free_environ (current_inferior ()->environment
);
1976 current_inferior ()->environment
= make_environ ();
1980 unset_in_environ (current_inferior ()->environment
, var
);
1983 /* Handle the execution path (PATH variable). */
1985 static const char path_var_name
[] = "PATH";
1988 path_info (char *args
, int from_tty
)
1990 puts_filtered ("Executable and object file path: ");
1991 puts_filtered (get_in_environ (current_inferior ()->environment
,
1993 puts_filtered ("\n");
1996 /* Add zero or more directories to the front of the execution path. */
1999 path_command (char *dirname
, int from_tty
)
2005 env
= get_in_environ (current_inferior ()->environment
, path_var_name
);
2006 /* Can be null if path is not set. */
2009 exec_path
= xstrdup (env
);
2010 mod_path (dirname
, &exec_path
);
2011 set_in_environ (current_inferior ()->environment
, path_var_name
, exec_path
);
2014 path_info ((char *) NULL
, from_tty
);
2018 /* Print out the register NAME with value VAL, to FILE, in the default
2022 default_print_one_register_info (struct ui_file
*file
,
2026 struct type
*regtype
= value_type (val
);
2028 fputs_filtered (name
, file
);
2029 print_spaces_filtered (15 - strlen (name
), file
);
2031 if (!value_entirely_available (val
))
2033 fprintf_filtered (file
, "*value not available*\n");
2037 /* If virtual format is floating, print it that way, and in raw
2039 if (TYPE_CODE (regtype
) == TYPE_CODE_FLT
2040 || TYPE_CODE (regtype
) == TYPE_CODE_DECFLOAT
)
2043 struct value_print_options opts
;
2044 const gdb_byte
*valaddr
= value_contents_for_printing (val
);
2045 enum bfd_endian byte_order
= gdbarch_byte_order (get_type_arch (regtype
));
2047 get_user_print_options (&opts
);
2051 value_contents_for_printing (val
),
2052 value_embedded_offset (val
), 0,
2053 file
, 0, val
, &opts
, current_language
);
2055 fprintf_filtered (file
, "\t(raw 0x");
2056 for (j
= 0; j
< TYPE_LENGTH (regtype
); j
++)
2060 if (byte_order
== BFD_ENDIAN_BIG
)
2063 idx
= TYPE_LENGTH (regtype
) - 1 - j
;
2064 fprintf_filtered (file
, "%02x", (unsigned char) valaddr
[idx
]);
2066 fprintf_filtered (file
, ")");
2070 struct value_print_options opts
;
2072 /* Print the register in hex. */
2073 get_formatted_print_options (&opts
, 'x');
2076 value_contents_for_printing (val
),
2077 value_embedded_offset (val
), 0,
2078 file
, 0, val
, &opts
, current_language
);
2079 /* If not a vector register, print it also according to its
2081 if (TYPE_VECTOR (regtype
) == 0)
2083 get_user_print_options (&opts
);
2085 fprintf_filtered (file
, "\t");
2087 value_contents_for_printing (val
),
2088 value_embedded_offset (val
), 0,
2089 file
, 0, val
, &opts
, current_language
);
2093 fprintf_filtered (file
, "\n");
2096 /* Print out the machine register regnum. If regnum is -1, print all
2097 registers (print_all == 1) or all non-float and non-vector
2098 registers (print_all == 0).
2100 For most machines, having all_registers_info() print the
2101 register(s) one per line is good enough. If a different format is
2102 required, (eg, for MIPS or Pyramid 90x, which both have lots of
2103 regs), or there is an existing convention for showing all the
2104 registers, define the architecture method PRINT_REGISTERS_INFO to
2105 provide that format. */
2108 default_print_registers_info (struct gdbarch
*gdbarch
,
2109 struct ui_file
*file
,
2110 struct frame_info
*frame
,
2111 int regnum
, int print_all
)
2114 const int numregs
= gdbarch_num_regs (gdbarch
)
2115 + gdbarch_num_pseudo_regs (gdbarch
);
2117 for (i
= 0; i
< numregs
; i
++)
2119 struct type
*regtype
;
2122 /* Decide between printing all regs, non-float / vector regs, or
2128 if (!gdbarch_register_reggroup_p (gdbarch
, i
, all_reggroup
))
2133 if (!gdbarch_register_reggroup_p (gdbarch
, i
, general_reggroup
))
2143 /* If the register name is empty, it is undefined for this
2144 processor, so don't display anything. */
2145 if (gdbarch_register_name (gdbarch
, i
) == NULL
2146 || *(gdbarch_register_name (gdbarch
, i
)) == '\0')
2149 regtype
= register_type (gdbarch
, i
);
2150 val
= allocate_value (regtype
);
2152 /* Get the data in raw format. */
2153 if (! deprecated_frame_register_read (frame
, i
, value_contents_raw (val
)))
2154 mark_value_bytes_unavailable (val
, 0, TYPE_LENGTH (value_type (val
)));
2156 default_print_one_register_info (file
,
2157 gdbarch_register_name (gdbarch
, i
),
2163 registers_info (char *addr_exp
, int fpregs
)
2165 struct frame_info
*frame
;
2166 struct gdbarch
*gdbarch
;
2168 if (!target_has_registers
)
2169 error (_("The program has no registers now."));
2170 frame
= get_selected_frame (NULL
);
2171 gdbarch
= get_frame_arch (frame
);
2175 gdbarch_print_registers_info (gdbarch
, gdb_stdout
,
2180 while (*addr_exp
!= '\0')
2185 /* Skip leading white space. */
2186 addr_exp
= skip_spaces (addr_exp
);
2188 /* Discard any leading ``$''. Check that there is something
2189 resembling a register following it. */
2190 if (addr_exp
[0] == '$')
2192 if (isspace ((*addr_exp
)) || (*addr_exp
) == '\0')
2193 error (_("Missing register name"));
2195 /* Find the start/end of this register name/num/group. */
2197 while ((*addr_exp
) != '\0' && !isspace ((*addr_exp
)))
2201 /* Figure out what we've found and display it. */
2203 /* A register name? */
2205 int regnum
= user_reg_map_name_to_regnum (gdbarch
, start
, end
- start
);
2209 /* User registers lie completely outside of the range of
2210 normal registers. Catch them early so that the target
2212 if (regnum
>= gdbarch_num_regs (gdbarch
)
2213 + gdbarch_num_pseudo_regs (gdbarch
))
2215 struct value
*regval
= value_of_user_reg (regnum
, frame
);
2216 const char *regname
= user_reg_map_regnum_to_name (gdbarch
,
2219 /* Print in the same fashion
2220 gdbarch_print_registers_info's default
2221 implementation prints. */
2222 default_print_one_register_info (gdb_stdout
,
2227 gdbarch_print_registers_info (gdbarch
, gdb_stdout
,
2228 frame
, regnum
, fpregs
);
2233 /* A register group? */
2235 struct reggroup
*group
;
2237 for (group
= reggroup_next (gdbarch
, NULL
);
2239 group
= reggroup_next (gdbarch
, group
))
2241 /* Don't bother with a length check. Should the user
2242 enter a short register group name, go with the first
2243 group that matches. */
2244 if (strncmp (start
, reggroup_name (group
), end
- start
) == 0)
2252 regnum
< gdbarch_num_regs (gdbarch
)
2253 + gdbarch_num_pseudo_regs (gdbarch
);
2256 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, group
))
2257 gdbarch_print_registers_info (gdbarch
,
2265 /* Nothing matched. */
2266 error (_("Invalid register `%.*s'"), (int) (end
- start
), start
);
2271 all_registers_info (char *addr_exp
, int from_tty
)
2273 registers_info (addr_exp
, 1);
2277 nofp_registers_info (char *addr_exp
, int from_tty
)
2279 registers_info (addr_exp
, 0);
2283 print_vector_info (struct ui_file
*file
,
2284 struct frame_info
*frame
, const char *args
)
2286 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
2288 if (gdbarch_print_vector_info_p (gdbarch
))
2289 gdbarch_print_vector_info (gdbarch
, file
, frame
, args
);
2293 int printed_something
= 0;
2296 regnum
< gdbarch_num_regs (gdbarch
)
2297 + gdbarch_num_pseudo_regs (gdbarch
);
2300 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, vector_reggroup
))
2302 printed_something
= 1;
2303 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
2306 if (!printed_something
)
2307 fprintf_filtered (file
, "No vector information\n");
2312 vector_info (char *args
, int from_tty
)
2314 if (!target_has_registers
)
2315 error (_("The program has no registers now."));
2317 print_vector_info (gdb_stdout
, get_selected_frame (NULL
), args
);
2320 /* Kill the inferior process. Make us have no inferior. */
2323 kill_command (char *arg
, int from_tty
)
2325 /* FIXME: This should not really be inferior_ptid (or target_has_execution).
2326 It should be a distinct flag that indicates that a target is active, cuz
2327 some targets don't have processes! */
2329 if (ptid_equal (inferior_ptid
, null_ptid
))
2330 error (_("The program is not being run."));
2331 if (!query (_("Kill the program being debugged? ")))
2332 error (_("Not confirmed."));
2335 /* If we still have other inferiors to debug, then don't mess with
2336 with their threads. */
2337 if (!have_inferiors ())
2339 init_thread_list (); /* Destroy thread info. */
2341 /* Killing off the inferior can leave us with a core file. If
2342 so, print the state we are left in. */
2343 if (target_has_stack
)
2345 printf_filtered (_("In %s,\n"), target_longname
);
2346 print_stack_frame (get_selected_frame (NULL
), 1, SRC_AND_LOC
);
2349 bfd_cache_close_all ();
2352 /* Used in `attach&' command. ARG is a point to an integer
2353 representing a process id. Proceed threads of this process iff
2354 they stopped due to debugger request, and when they did, they
2355 reported a clean stop (GDB_SIGNAL_0). Do not proceed threads
2356 that have been explicitly been told to stop. */
2359 proceed_after_attach_callback (struct thread_info
*thread
,
2362 int pid
= * (int *) arg
;
2364 if (ptid_get_pid (thread
->ptid
) == pid
2365 && !is_exited (thread
->ptid
)
2366 && !is_executing (thread
->ptid
)
2367 && !thread
->stop_requested
2368 && thread
->suspend
.stop_signal
== GDB_SIGNAL_0
)
2370 switch_to_thread (thread
->ptid
);
2371 clear_proceed_status ();
2372 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
2379 proceed_after_attach (int pid
)
2381 /* Don't error out if the current thread is running, because
2382 there may be other stopped threads. */
2383 struct cleanup
*old_chain
;
2385 /* Backup current thread and selected frame. */
2386 old_chain
= make_cleanup_restore_current_thread ();
2388 iterate_over_threads (proceed_after_attach_callback
, &pid
);
2390 /* Restore selected ptid. */
2391 do_cleanups (old_chain
);
2396 * Should save/restore the tty state since it might be that the
2397 * program to be debugged was started on this tty and it wants
2398 * the tty in some state other than what we want. If it's running
2399 * on another terminal or without a terminal, then saving and
2400 * restoring the tty state is a harmless no-op.
2401 * This only needs to be done if we are attaching to a process.
2404 /* attach_command --
2405 takes a program started up outside of gdb and ``attaches'' to it.
2406 This stops it cold in its tracks and allows us to start debugging it.
2407 and wait for the trace-trap that results from attaching. */
2410 attach_command_post_wait (char *args
, int from_tty
, int async_exec
)
2413 char *full_exec_path
= NULL
;
2414 struct inferior
*inferior
;
2416 inferior
= current_inferior ();
2417 inferior
->control
.stop_soon
= NO_STOP_QUIETLY
;
2419 /* If no exec file is yet known, try to determine it from the
2421 exec_file
= (char *) get_exec_file (0);
2424 exec_file
= target_pid_to_exec_file (PIDGET (inferior_ptid
));
2427 /* It's possible we don't have a full path, but rather just a
2428 filename. Some targets, such as HP-UX, don't provide the
2431 Attempt to qualify the filename against the source path.
2432 (If that fails, we'll just fall back on the original
2433 filename. Not much more we can do...) */
2435 if (!source_full_path_of (exec_file
, &full_exec_path
))
2436 full_exec_path
= xstrdup (exec_file
);
2438 exec_file_attach (full_exec_path
, from_tty
);
2439 symbol_file_add_main (full_exec_path
, from_tty
);
2444 reopen_exec_file ();
2448 /* Take any necessary post-attaching actions for this platform. */
2449 target_post_attach (PIDGET (inferior_ptid
));
2451 post_create_inferior (¤t_target
, from_tty
);
2453 /* Install inferior's terminal modes. */
2454 target_terminal_inferior ();
2458 /* The user requested an `attach&', so be sure to leave threads
2459 that didn't get a signal running. */
2461 /* Immediatelly resume all suspended threads of this inferior,
2462 and this inferior only. This should have no effect on
2463 already running threads. If a thread has been stopped with a
2464 signal, leave it be. */
2466 proceed_after_attach (inferior
->pid
);
2469 if (inferior_thread ()->suspend
.stop_signal
== GDB_SIGNAL_0
)
2471 clear_proceed_status ();
2472 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
2478 /* The user requested a plain `attach', so be sure to leave
2479 the inferior stopped. */
2481 if (target_can_async_p ())
2482 async_enable_stdin ();
2484 /* At least the current thread is already stopped. */
2486 /* In all-stop, by definition, all threads have to be already
2487 stopped at this point. In non-stop, however, although the
2488 selected thread is stopped, others may still be executing.
2489 Be sure to explicitly stop all threads of the process. This
2490 should have no effect on already stopped threads. */
2492 target_stop (pid_to_ptid (inferior
->pid
));
2494 /* Tell the user/frontend where we're stopped. */
2496 if (deprecated_attach_hook
)
2497 deprecated_attach_hook ();
2501 struct attach_command_continuation_args
2509 attach_command_continuation (void *args
, int err
)
2511 struct attach_command_continuation_args
*a
= args
;
2516 attach_command_post_wait (a
->args
, a
->from_tty
, a
->async_exec
);
2520 attach_command_continuation_free_args (void *args
)
2522 struct attach_command_continuation_args
*a
= args
;
2529 attach_command (char *args
, int from_tty
)
2532 struct cleanup
*back_to
= make_cleanup (null_cleanup
, NULL
);
2534 dont_repeat (); /* Not for the faint of heart */
2536 if (gdbarch_has_global_solist (target_gdbarch ()))
2537 /* Don't complain if all processes share the same symbol
2540 else if (target_has_execution
)
2542 if (query (_("A program is being debugged already. Kill it? ")))
2545 error (_("Not killed."));
2548 /* Clean up any leftovers from other runs. Some other things from
2549 this function should probably be moved into target_pre_inferior. */
2550 target_pre_inferior (from_tty
);
2552 if (non_stop
&& !target_supports_non_stop ())
2553 error (_("Cannot attach to this target in non-stop mode"));
2557 async_exec
= strip_bg_char (&args
);
2559 /* If we get a request for running in the bg but the target
2560 doesn't support it, error out. */
2561 if (async_exec
&& !target_can_async_p ())
2562 error (_("Asynchronous execution not supported on this target."));
2565 /* If we don't get a request of running in the bg, then we need
2566 to simulate synchronous (fg) execution. */
2567 if (!async_exec
&& target_can_async_p ())
2569 /* Simulate synchronous execution. */
2570 async_disable_stdin ();
2571 make_cleanup ((make_cleanup_ftype
*)async_enable_stdin
, NULL
);
2574 target_attach (args
, from_tty
);
2576 /* Set up the "saved terminal modes" of the inferior
2577 based on what modes we are starting it with. */
2578 target_terminal_init ();
2580 /* Set up execution context to know that we should return from
2581 wait_for_inferior as soon as the target reports a stop. */
2582 init_wait_for_inferior ();
2583 clear_proceed_status ();
2587 /* If we find that the current thread isn't stopped, explicitly
2588 do so now, because we're going to install breakpoints and
2592 /* The user requested an `attach&'; stop just one thread. */
2593 target_stop (inferior_ptid
);
2595 /* The user requested an `attach', so stop all threads of this
2597 target_stop (pid_to_ptid (ptid_get_pid (inferior_ptid
)));
2600 /* Some system don't generate traps when attaching to inferior.
2601 E.g. Mach 3 or GNU hurd. */
2602 if (!target_attach_no_wait
)
2604 struct inferior
*inferior
= current_inferior ();
2606 /* Careful here. See comments in inferior.h. Basically some
2607 OSes don't ignore SIGSTOPs on continue requests anymore. We
2608 need a way for handle_inferior_event to reset the stop_signal
2609 variable after an attach, and this is what
2610 STOP_QUIETLY_NO_SIGSTOP is for. */
2611 inferior
->control
.stop_soon
= STOP_QUIETLY_NO_SIGSTOP
;
2613 if (target_can_async_p ())
2615 /* sync_execution mode. Wait for stop. */
2616 struct attach_command_continuation_args
*a
;
2618 a
= xmalloc (sizeof (*a
));
2619 a
->args
= xstrdup (args
);
2620 a
->from_tty
= from_tty
;
2621 a
->async_exec
= async_exec
;
2622 add_inferior_continuation (attach_command_continuation
, a
,
2623 attach_command_continuation_free_args
);
2624 discard_cleanups (back_to
);
2628 wait_for_inferior ();
2631 attach_command_post_wait (args
, from_tty
, async_exec
);
2632 discard_cleanups (back_to
);
2635 /* We had just found out that the target was already attached to an
2636 inferior. PTID points at a thread of this new inferior, that is
2637 the most likely to be stopped right now, but not necessarily so.
2638 The new inferior is assumed to be already added to the inferior
2639 list at this point. If LEAVE_RUNNING, then leave the threads of
2640 this inferior running, except those we've explicitly seen reported
2644 notice_new_inferior (ptid_t ptid
, int leave_running
, int from_tty
)
2646 struct cleanup
* old_chain
;
2649 old_chain
= make_cleanup (null_cleanup
, NULL
);
2651 /* If in non-stop, leave threads as running as they were. If
2652 they're stopped for some reason other than us telling it to, the
2653 target reports a signal != GDB_SIGNAL_0. We don't try to
2654 resume threads with such a stop signal. */
2655 async_exec
= non_stop
;
2657 if (!ptid_equal (inferior_ptid
, null_ptid
))
2658 make_cleanup_restore_current_thread ();
2660 switch_to_thread (ptid
);
2662 /* When we "notice" a new inferior we need to do all the things we
2663 would normally do if we had just attached to it. */
2665 if (is_executing (inferior_ptid
))
2667 struct inferior
*inferior
= current_inferior ();
2669 /* We're going to install breakpoints, and poke at memory,
2670 ensure that the inferior is stopped for a moment while we do
2672 target_stop (inferior_ptid
);
2674 inferior
->control
.stop_soon
= STOP_QUIETLY_REMOTE
;
2676 /* Wait for stop before proceeding. */
2677 if (target_can_async_p ())
2679 struct attach_command_continuation_args
*a
;
2681 a
= xmalloc (sizeof (*a
));
2682 a
->args
= xstrdup ("");
2683 a
->from_tty
= from_tty
;
2684 a
->async_exec
= async_exec
;
2685 add_inferior_continuation (attach_command_continuation
, a
,
2686 attach_command_continuation_free_args
);
2688 do_cleanups (old_chain
);
2692 wait_for_inferior ();
2695 async_exec
= leave_running
;
2696 attach_command_post_wait ("" /* args */, from_tty
, async_exec
);
2698 do_cleanups (old_chain
);
2703 * takes a program previously attached to and detaches it.
2704 * The program resumes execution and will no longer stop
2705 * on signals, etc. We better not have left any breakpoints
2706 * in the program or it'll die when it hits one. For this
2707 * to work, it may be necessary for the process to have been
2708 * previously attached. It *might* work if the program was
2709 * started via the normal ptrace (PTRACE_TRACEME).
2713 detach_command (char *args
, int from_tty
)
2715 dont_repeat (); /* Not for the faint of heart. */
2717 if (ptid_equal (inferior_ptid
, null_ptid
))
2718 error (_("The program is not being run."));
2720 query_if_trace_running (from_tty
);
2722 disconnect_tracing ();
2724 target_detach (args
, from_tty
);
2726 /* If the solist is global across inferiors, don't clear it when we
2727 detach from a single inferior. */
2728 if (!gdbarch_has_global_solist (target_gdbarch ()))
2729 no_shared_libraries (NULL
, from_tty
);
2731 /* If we still have inferiors to debug, then don't mess with their
2733 if (!have_inferiors ())
2734 init_thread_list ();
2736 if (deprecated_detach_hook
)
2737 deprecated_detach_hook ();
2740 /* Disconnect from the current target without resuming it (leaving it
2741 waiting for a debugger).
2743 We'd better not have left any breakpoints in the program or the
2744 next debugger will get confused. Currently only supported for some
2745 remote targets, since the normal attach mechanisms don't work on
2746 stopped processes on some native platforms (e.g. GNU/Linux). */
2749 disconnect_command (char *args
, int from_tty
)
2751 dont_repeat (); /* Not for the faint of heart. */
2752 query_if_trace_running (from_tty
);
2753 disconnect_tracing ();
2754 target_disconnect (args
, from_tty
);
2755 no_shared_libraries (NULL
, from_tty
);
2756 init_thread_list ();
2757 if (deprecated_detach_hook
)
2758 deprecated_detach_hook ();
2762 interrupt_target_1 (int all_threads
)
2767 ptid
= minus_one_ptid
;
2769 ptid
= inferior_ptid
;
2772 /* Tag the thread as having been explicitly requested to stop, so
2773 other parts of gdb know not to resume this thread automatically,
2774 if it was stopped due to an internal event. Limit this to
2775 non-stop mode, as when debugging a multi-threaded application in
2776 all-stop mode, we will only get one stop event --- it's undefined
2777 which thread will report the event. */
2779 set_stop_requested (ptid
, 1);
2782 /* Stop the execution of the target while running in async mode, in
2783 the backgound. In all-stop, stop the whole process. In non-stop
2784 mode, stop the current thread only by default, or stop all threads
2785 if the `-a' switch is used. */
2787 /* interrupt [-a] */
2789 interrupt_target_command (char *args
, int from_tty
)
2791 if (target_can_async_p ())
2793 int all_threads
= 0;
2795 dont_repeat (); /* Not for the faint of heart. */
2798 && strncmp (args
, "-a", sizeof ("-a") - 1) == 0)
2801 if (!non_stop
&& all_threads
)
2802 error (_("-a is meaningless in all-stop mode."));
2804 interrupt_target_1 (all_threads
);
2809 print_float_info (struct ui_file
*file
,
2810 struct frame_info
*frame
, const char *args
)
2812 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
2814 if (gdbarch_print_float_info_p (gdbarch
))
2815 gdbarch_print_float_info (gdbarch
, file
, frame
, args
);
2819 int printed_something
= 0;
2822 regnum
< gdbarch_num_regs (gdbarch
)
2823 + gdbarch_num_pseudo_regs (gdbarch
);
2826 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, float_reggroup
))
2828 printed_something
= 1;
2829 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
2832 if (!printed_something
)
2833 fprintf_filtered (file
, "No floating-point info "
2834 "available for this processor.\n");
2839 float_info (char *args
, int from_tty
)
2841 if (!target_has_registers
)
2842 error (_("The program has no registers now."));
2844 print_float_info (gdb_stdout
, get_selected_frame (NULL
), args
);
2848 unset_command (char *args
, int from_tty
)
2850 printf_filtered (_("\"unset\" must be followed by the "
2851 "name of an unset subcommand.\n"));
2852 help_list (unsetlist
, "unset ", -1, gdb_stdout
);
2855 /* Implement `info proc' family of commands. */
2858 info_proc_cmd_1 (char *args
, enum info_proc_what what
, int from_tty
)
2860 struct gdbarch
*gdbarch
= get_current_arch ();
2862 if (!target_info_proc (args
, what
))
2864 if (gdbarch_info_proc_p (gdbarch
))
2865 gdbarch_info_proc (gdbarch
, args
, what
);
2867 error (_("Not supported on this target."));
2871 /* Implement `info proc' when given without any futher parameters. */
2874 info_proc_cmd (char *args
, int from_tty
)
2876 info_proc_cmd_1 (args
, IP_MINIMAL
, from_tty
);
2879 /* Implement `info proc mappings'. */
2882 info_proc_cmd_mappings (char *args
, int from_tty
)
2884 info_proc_cmd_1 (args
, IP_MAPPINGS
, from_tty
);
2887 /* Implement `info proc stat'. */
2890 info_proc_cmd_stat (char *args
, int from_tty
)
2892 info_proc_cmd_1 (args
, IP_STAT
, from_tty
);
2895 /* Implement `info proc status'. */
2898 info_proc_cmd_status (char *args
, int from_tty
)
2900 info_proc_cmd_1 (args
, IP_STATUS
, from_tty
);
2903 /* Implement `info proc cwd'. */
2906 info_proc_cmd_cwd (char *args
, int from_tty
)
2908 info_proc_cmd_1 (args
, IP_CWD
, from_tty
);
2911 /* Implement `info proc cmdline'. */
2914 info_proc_cmd_cmdline (char *args
, int from_tty
)
2916 info_proc_cmd_1 (args
, IP_CMDLINE
, from_tty
);
2919 /* Implement `info proc exe'. */
2922 info_proc_cmd_exe (char *args
, int from_tty
)
2924 info_proc_cmd_1 (args
, IP_EXE
, from_tty
);
2927 /* Implement `info proc all'. */
2930 info_proc_cmd_all (char *args
, int from_tty
)
2932 info_proc_cmd_1 (args
, IP_ALL
, from_tty
);
2936 _initialize_infcmd (void)
2938 static struct cmd_list_element
*info_proc_cmdlist
;
2939 struct cmd_list_element
*c
= NULL
;
2940 const char *cmd_name
;
2942 /* Add the filename of the terminal connected to inferior I/O. */
2943 add_setshow_filename_cmd ("inferior-tty", class_run
,
2944 &inferior_io_terminal_scratch
, _("\
2945 Set terminal for future runs of program being debugged."), _("\
2946 Show terminal for future runs of program being debugged."), _("\
2947 Usage: set inferior-tty /dev/pts/1"),
2948 set_inferior_tty_command
,
2949 show_inferior_tty_command
,
2950 &setlist
, &showlist
);
2951 add_com_alias ("tty", "set inferior-tty", class_alias
, 0);
2954 add_setshow_string_noescape_cmd (cmd_name
, class_run
,
2955 &inferior_args_scratch
, _("\
2956 Set argument list to give program being debugged when it is started."), _("\
2957 Show argument list to give program being debugged when it is started."), _("\
2958 Follow this command with any number of args, to be passed to the program."),
2961 &setlist
, &showlist
);
2962 c
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
2963 gdb_assert (c
!= NULL
);
2964 set_cmd_completer (c
, filename_completer
);
2966 c
= add_cmd ("environment", no_class
, environment_info
, _("\
2967 The environment to give the program, or one variable's value.\n\
2968 With an argument VAR, prints the value of environment variable VAR to\n\
2969 give the program being debugged. With no arguments, prints the entire\n\
2970 environment to be given to the program."), &showlist
);
2971 set_cmd_completer (c
, noop_completer
);
2973 add_prefix_cmd ("unset", no_class
, unset_command
,
2974 _("Complement to certain \"set\" commands."),
2975 &unsetlist
, "unset ", 0, &cmdlist
);
2977 c
= add_cmd ("environment", class_run
, unset_environment_command
, _("\
2978 Cancel environment variable VAR for the program.\n\
2979 This does not affect the program until the next \"run\" command."),
2981 set_cmd_completer (c
, noop_completer
);
2983 c
= add_cmd ("environment", class_run
, set_environment_command
, _("\
2984 Set environment variable value to give the program.\n\
2985 Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\
2986 VALUES of environment variables are uninterpreted strings.\n\
2987 This does not affect the program until the next \"run\" command."),
2989 set_cmd_completer (c
, noop_completer
);
2991 c
= add_com ("path", class_files
, path_command
, _("\
2992 Add directory DIR(s) to beginning of search path for object files.\n\
2993 $cwd in the path means the current working directory.\n\
2994 This path is equivalent to the $PATH shell variable. It is a list of\n\
2995 directories, separated by colons. These directories are searched to find\n\
2996 fully linked executable files and separately compiled object files as \
2998 set_cmd_completer (c
, filename_completer
);
3000 c
= add_cmd ("paths", no_class
, path_info
, _("\
3001 Current search path for finding 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 \
3008 set_cmd_completer (c
, noop_completer
);
3010 add_prefix_cmd ("kill", class_run
, kill_command
,
3011 _("Kill execution of program being debugged."),
3012 &killlist
, "kill ", 0, &cmdlist
);
3014 add_com ("attach", class_run
, attach_command
, _("\
3015 Attach to a process or file outside of GDB.\n\
3016 This command attaches to another target, of the same type as your last\n\
3017 \"target\" command (\"info files\" will show your target stack).\n\
3018 The command may take as argument a process id or a device file.\n\
3019 For a process id, you must have permission to send the process a signal,\n\
3020 and it must have the same effective uid as the debugger.\n\
3021 When using \"attach\" with a process id, the debugger finds the\n\
3022 program running in the process, looking first in the current working\n\
3023 directory, or (if not found there) using the source file search path\n\
3024 (see the \"directory\" command). You can also use the \"file\" command\n\
3025 to specify the program, and to load its symbol table."));
3027 add_prefix_cmd ("detach", class_run
, detach_command
, _("\
3028 Detach a process or file previously attached.\n\
3029 If a process, it is no longer traced, and it continues its execution. If\n\
3030 you were debugging a file, the file is closed and gdb no longer accesses it."),
3031 &detachlist
, "detach ", 0, &cmdlist
);
3033 add_com ("disconnect", class_run
, disconnect_command
, _("\
3034 Disconnect from a target.\n\
3035 The target will wait for another debugger to connect. Not available for\n\
3038 c
= add_com ("signal", class_run
, signal_command
, _("\
3039 Continue program with the specified signal.\n\
3040 Usage: signal SIGNAL\n\
3041 The SIGNAL argument is processed the same as the handle command.\n\
3043 An argument of \"0\" means continue the program without sending it a signal.\n\
3044 This is useful in cases where the program stopped because of a signal,\n\
3045 and you want to resume the program while discarding the signal."));
3046 set_cmd_completer (c
, signal_completer
);
3048 add_com ("stepi", class_run
, stepi_command
, _("\
3049 Step one instruction exactly.\n\
3051 Argument N means step N times (or till program stops for another \
3053 add_com_alias ("si", "stepi", class_alias
, 0);
3055 add_com ("nexti", class_run
, nexti_command
, _("\
3056 Step one instruction, but proceed through subroutine calls.\n\
3058 Argument N means step N times (or till program stops for another \
3060 add_com_alias ("ni", "nexti", class_alias
, 0);
3062 add_com ("finish", class_run
, finish_command
, _("\
3063 Execute until selected stack frame returns.\n\
3065 Upon return, the value returned is printed and put in the value history."));
3066 add_com_alias ("fin", "finish", class_run
, 1);
3068 add_com ("next", class_run
, next_command
, _("\
3069 Step program, proceeding through subroutine calls.\n\
3071 Unlike \"step\", if the current source line calls a subroutine,\n\
3072 this command does not enter the subroutine, but instead steps over\n\
3073 the call, in effect treating it as a single source line."));
3074 add_com_alias ("n", "next", class_run
, 1);
3076 add_com_alias ("S", "next", class_run
, 1);
3078 add_com ("step", class_run
, step_command
, _("\
3079 Step program until it reaches a different source line.\n\
3081 Argument N means step N times (or till program stops for another \
3083 add_com_alias ("s", "step", class_run
, 1);
3085 c
= add_com ("until", class_run
, until_command
, _("\
3086 Execute until the program reaches a source line greater than the current\n\
3087 or a specified location (same args as break command) within the current \
3089 set_cmd_completer (c
, location_completer
);
3090 add_com_alias ("u", "until", class_run
, 1);
3092 c
= add_com ("advance", class_run
, advance_command
, _("\
3093 Continue the program up to the given location (same form as args for break \
3095 Execution will also stop upon exit from the current stack frame."));
3096 set_cmd_completer (c
, location_completer
);
3098 c
= add_com ("jump", class_run
, jump_command
, _("\
3099 Continue program being debugged at specified line or address.\n\
3100 Usage: jump <location>\n\
3101 Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\
3102 for an address to start at."));
3103 set_cmd_completer (c
, location_completer
);
3104 add_com_alias ("j", "jump", class_run
, 1);
3108 c
= add_com ("go", class_run
, go_command
, _("\
3109 Usage: go <location>\n\
3110 Continue program being debugged, stopping at specified line or \n\
3112 Give as argument either LINENUM or *ADDR, where ADDR is an \n\
3113 expression for an address to start at.\n\
3114 This command is a combination of tbreak and jump."));
3115 set_cmd_completer (c
, location_completer
);
3119 add_com_alias ("g", "go", class_run
, 1);
3121 add_com ("continue", class_run
, continue_command
, _("\
3122 Continue program being debugged, after signal or breakpoint.\n\
3123 Usage: continue [N]\n\
3124 If proceeding from breakpoint, a number N may be used as an argument,\n\
3125 which means to set the ignore count of that breakpoint to N - 1 (so that\n\
3126 the breakpoint won't break until the Nth time it is reached).\n\
3128 If non-stop mode is enabled, continue only the current thread,\n\
3129 otherwise all the threads in the program are continued. To \n\
3130 continue all stopped threads in non-stop mode, use the -a option.\n\
3131 Specifying -a and an ignore count simultaneously is an error."));
3132 add_com_alias ("c", "cont", class_run
, 1);
3133 add_com_alias ("fg", "cont", class_run
, 1);
3135 c
= add_com ("run", class_run
, run_command
, _("\
3136 Start debugged program. You may specify arguments to give it.\n\
3137 Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\
3138 Input and output redirection with \">\", \"<\", or \">>\" are also \
3140 With no arguments, uses arguments last specified (with \"run\" \
3141 or \"set args\").\n\
3142 To cancel previous arguments and run with no arguments,\n\
3143 use \"set args\" without arguments."));
3144 set_cmd_completer (c
, filename_completer
);
3145 add_com_alias ("r", "run", class_run
, 1);
3147 add_com ("R", class_run
, run_no_args_command
,
3148 _("Start debugged program with no arguments."));
3150 c
= add_com ("start", class_run
, start_command
, _("\
3151 Run the debugged program until the beginning of the main procedure.\n\
3152 You may specify arguments to give to your program, just as with the\n\
3153 \"run\" command."));
3154 set_cmd_completer (c
, filename_completer
);
3156 add_com ("interrupt", class_run
, interrupt_target_command
,
3157 _("Interrupt the execution of the debugged program.\n\
3158 If non-stop mode is enabled, interrupt only the current thread,\n\
3159 otherwise all the threads in the program are stopped. To \n\
3160 interrupt all running threads in non-stop mode, use the -a option."));
3162 add_info ("registers", nofp_registers_info
, _("\
3163 List of integer registers and their contents, for selected stack frame.\n\
3164 Register name as argument means describe only that register."));
3165 add_info_alias ("r", "registers", 1);
3168 add_com ("lr", class_info
, nofp_registers_info
, _("\
3169 List of integer registers and their contents, for selected stack frame.\n\
3170 Register name as argument means describe only that register."));
3171 add_info ("all-registers", all_registers_info
, _("\
3172 List of all registers and their contents, for selected stack frame.\n\
3173 Register name as argument means describe only that register."));
3175 add_info ("program", program_info
,
3176 _("Execution status of the program."));
3178 add_info ("float", float_info
,
3179 _("Print the status of the floating point unit\n"));
3181 add_info ("vector", vector_info
,
3182 _("Print the status of the vector unit\n"));
3184 add_prefix_cmd ("proc", class_info
, info_proc_cmd
,
3186 Show /proc process information about any running process.\n\
3187 Specify any process id, or use the program being debugged by default."),
3188 &info_proc_cmdlist
, "info proc ",
3189 1/*allow-unknown*/, &infolist
);
3191 add_cmd ("mappings", class_info
, info_proc_cmd_mappings
, _("\
3192 List of mapped memory regions."),
3193 &info_proc_cmdlist
);
3195 add_cmd ("stat", class_info
, info_proc_cmd_stat
, _("\
3196 List process info from /proc/PID/stat."),
3197 &info_proc_cmdlist
);
3199 add_cmd ("status", class_info
, info_proc_cmd_status
, _("\
3200 List process info from /proc/PID/status."),
3201 &info_proc_cmdlist
);
3203 add_cmd ("cwd", class_info
, info_proc_cmd_cwd
, _("\
3204 List current working directory of the process."),
3205 &info_proc_cmdlist
);
3207 add_cmd ("cmdline", class_info
, info_proc_cmd_cmdline
, _("\
3208 List command line arguments of the process."),
3209 &info_proc_cmdlist
);
3211 add_cmd ("exe", class_info
, info_proc_cmd_exe
, _("\
3212 List absolute filename for executable of the process."),
3213 &info_proc_cmdlist
);
3215 add_cmd ("all", class_info
, info_proc_cmd_all
, _("\
3216 List all available /proc info."),
3217 &info_proc_cmdlist
);