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
;
150 /* See inferior.h. */
152 int startup_with_shell
= 1;
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 solib_create_inferior_hook (from_tty
);
441 if (current_program_space
->solib_add_generation
== solib_add_generation
)
443 /* The platform-specific hook should load initial shared libraries,
444 but didn't. FROM_TTY will be incorrectly 0 but such solib
445 targets should be fixed anyway. Call it only after the solib
446 target has been initialized by solib_create_inferior_hook. */
449 warning (_("platform-specific solib_create_inferior_hook did "
450 "not load initial shared libraries."));
452 /* If the solist is global across processes, there's no need to
454 if (!gdbarch_has_global_solist (target_gdbarch ()))
455 solib_add (NULL
, 0, target
, auto_solib_add
);
459 /* If the user sets watchpoints before execution having started,
460 then she gets software watchpoints, because GDB can't know which
461 target will end up being pushed, or if it supports hardware
462 watchpoints or not. breakpoint_re_set takes care of promoting
463 watchpoints to hardware watchpoints if possible, however, if this
464 new inferior doesn't load shared libraries or we don't pull in
465 symbols from any other source on this target/arch,
466 breakpoint_re_set is never called. Call it now so that software
467 watchpoints get a chance to be promoted to hardware watchpoints
468 if the now pushed target supports hardware watchpoints. */
469 breakpoint_re_set ();
471 observer_notify_inferior_created (target
, from_tty
);
474 /* Kill the inferior if already running. This function is designed
475 to be called when we are about to start the execution of the program
476 from the beginning. Ask the user to confirm that he wants to restart
477 the program being debugged when FROM_TTY is non-null. */
480 kill_if_already_running (int from_tty
)
482 if (! ptid_equal (inferior_ptid
, null_ptid
) && target_has_execution
)
484 /* Bail out before killing the program if we will not be able to
486 target_require_runnable ();
489 && !query (_("The program being debugged has been started already.\n\
490 Start it from the beginning? ")))
491 error (_("Program not restarted."));
496 /* Implement the "run" command. If TBREAK_AT_MAIN is set, then insert
497 a temporary breakpoint at the begining of the main program before
498 running the program. */
501 run_command_1 (char *args
, int from_tty
, int tbreak_at_main
)
504 struct cleanup
*old_chain
;
506 struct ui_out
*uiout
= current_uiout
;
510 kill_if_already_running (from_tty
);
512 init_wait_for_inferior ();
513 clear_breakpoint_hit_counts ();
515 /* Clean up any leftovers from other runs. Some other things from
516 this function should probably be moved into target_pre_inferior. */
517 target_pre_inferior (from_tty
);
519 /* The comment here used to read, "The exec file is re-read every
520 time we do a generic_mourn_inferior, so we just have to worry
521 about the symbol file." The `generic_mourn_inferior' function
522 gets called whenever the program exits. However, suppose the
523 program exits, and *then* the executable file changes? We need
524 to check again here. Since reopen_exec_file doesn't do anything
525 if the timestamp hasn't changed, I don't see the harm. */
529 /* Insert the temporary breakpoint if a location was specified. */
531 tbreak_command (main_name (), 0);
533 exec_file
= (char *) get_exec_file (0);
535 if (non_stop
&& !target_supports_non_stop ())
536 error (_("The target does not support running in non-stop mode."));
538 /* We keep symbols from add-symbol-file, on the grounds that the
539 user might want to add some symbols before running the program
540 (right?). But sometimes (dynamic loading where the user manually
541 introduces the new symbols with add-symbol-file), the code which
542 the symbols describe does not persist between runs. Currently
543 the user has to manually nuke all symbols between runs if they
544 want them to go away (PR 2207). This is probably reasonable. */
548 if (target_can_async_p ())
549 async_disable_stdin ();
553 int async_exec
= strip_bg_char (&args
);
555 /* If we get a request for running in the bg but the target
556 doesn't support it, error out. */
557 if (async_exec
&& !target_can_async_p ())
558 error (_("Asynchronous execution not supported on this target."));
560 /* If we don't get a request of running in the bg, then we need
561 to simulate synchronous (fg) execution. */
562 if (!async_exec
&& target_can_async_p ())
564 /* Simulate synchronous execution. */
565 async_disable_stdin ();
568 /* If there were other args, beside '&', process them. */
570 set_inferior_args (args
);
575 ui_out_field_string (uiout
, NULL
, "Starting program");
576 ui_out_text (uiout
, ": ");
578 ui_out_field_string (uiout
, "execfile", exec_file
);
579 ui_out_spaces (uiout
, 1);
580 /* We call get_inferior_args() because we might need to compute
582 ui_out_field_string (uiout
, "infargs", get_inferior_args ());
583 ui_out_text (uiout
, "\n");
584 ui_out_flush (uiout
);
587 /* We call get_inferior_args() because we might need to compute
589 target_create_inferior (exec_file
, get_inferior_args (),
590 environ_vector (current_inferior ()->environment
),
593 /* We're starting off a new process. When we get out of here, in
594 non-stop mode, finish the state of all threads of that process,
595 but leave other threads alone, as they may be stopped in internal
596 events --- the frontend shouldn't see them as stopped. In
597 all-stop, always finish the state of all threads, as we may be
598 resuming more than just the new process. */
600 ptid
= pid_to_ptid (ptid_get_pid (inferior_ptid
));
602 ptid
= minus_one_ptid
;
603 old_chain
= make_cleanup (finish_thread_state_cleanup
, &ptid
);
605 /* Pass zero for FROM_TTY, because at this point the "run" command
606 has done its thing; now we are setting up the running program. */
607 post_create_inferior (¤t_target
, 0);
609 /* Start the target running. Do not use -1 continuation as it would skip
610 breakpoint right at the entry point. */
611 proceed (regcache_read_pc (get_current_regcache ()), GDB_SIGNAL_0
, 0);
613 /* Since there was no error, there's no need to finish the thread
615 discard_cleanups (old_chain
);
619 run_command (char *args
, int from_tty
)
621 run_command_1 (args
, from_tty
, 0);
625 run_no_args_command (char *args
, int from_tty
)
627 set_inferior_args ("");
631 /* Start the execution of the program up until the beginning of the main
635 start_command (char *args
, int from_tty
)
637 /* Some languages such as Ada need to search inside the program
638 minimal symbols for the location where to put the temporary
639 breakpoint before starting. */
640 if (!have_minimal_symbols ())
641 error (_("No symbol table loaded. Use the \"file\" command."));
643 /* Run the program until reaching the main procedure... */
644 run_command_1 (args
, from_tty
, 1);
648 proceed_thread_callback (struct thread_info
*thread
, void *arg
)
650 /* We go through all threads individually instead of compressing
651 into a single target `resume_all' request, because some threads
652 may be stopped in internal breakpoints/events, or stopped waiting
653 for its turn in the displaced stepping queue (that is, they are
654 running && !executing). The target side has no idea about why
655 the thread is stopped, so a `resume_all' command would resume too
656 much. If/when GDB gains a way to tell the target `hold this
657 thread stopped until I say otherwise', then we can optimize
659 if (!is_stopped (thread
->ptid
))
662 switch_to_thread (thread
->ptid
);
663 clear_proceed_status ();
664 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
669 ensure_valid_thread (void)
671 if (ptid_equal (inferior_ptid
, null_ptid
)
672 || is_exited (inferior_ptid
))
673 error (_("Cannot execute this command without a live selected thread."));
676 /* If the user is looking at trace frames, any resumption of execution
677 is likely to mix up recorded and live target data. So simply
678 disallow those commands. */
681 ensure_not_tfind_mode (void)
683 if (get_traceframe_number () >= 0)
684 error (_("Cannot execute this command while looking at trace frames."));
687 /* Throw an error indicating the current thread is running. */
690 error_is_running (void)
692 error (_("Cannot execute this command while "
693 "the selected thread is running."));
696 /* Calls error_is_running if the current thread is running. */
699 ensure_not_running (void)
701 if (is_running (inferior_ptid
))
706 continue_1 (int all_threads
)
709 ensure_not_tfind_mode ();
711 if (non_stop
&& all_threads
)
713 /* Don't error out if the current thread is running, because
714 there may be other stopped threads. */
715 struct cleanup
*old_chain
;
717 /* Backup current thread and selected frame. */
718 old_chain
= make_cleanup_restore_current_thread ();
720 iterate_over_threads (proceed_thread_callback
, NULL
);
722 /* Restore selected ptid. */
723 do_cleanups (old_chain
);
727 ensure_valid_thread ();
728 ensure_not_running ();
729 clear_proceed_status ();
730 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
734 /* continue [-a] [proceed-count] [&] */
736 continue_command (char *args
, int from_tty
)
742 /* Find out whether we must run in the background. */
744 async_exec
= strip_bg_char (&args
);
746 /* If we must run in the background, but the target can't do it,
748 if (async_exec
&& !target_can_async_p ())
749 error (_("Asynchronous execution not supported on this target."));
751 /* If we are not asked to run in the bg, then prepare to run in the
752 foreground, synchronously. */
753 if (!async_exec
&& target_can_async_p ())
755 /* Simulate synchronous execution. */
756 async_disable_stdin ();
761 if (strncmp (args
, "-a", sizeof ("-a") - 1) == 0)
764 args
+= sizeof ("-a") - 1;
770 if (!non_stop
&& all_threads
)
771 error (_("`-a' is meaningless in all-stop mode."));
773 if (args
!= NULL
&& all_threads
)
774 error (_("Can't resume all threads and specify "
775 "proceed count simultaneously."));
777 /* If we have an argument left, set proceed count of breakpoint we
784 struct thread_info
*tp
;
787 tp
= find_thread_ptid (inferior_ptid
);
791 struct target_waitstatus ws
;
793 get_last_target_status (&last_ptid
, &ws
);
794 tp
= find_thread_ptid (last_ptid
);
797 bs
= tp
->control
.stop_bpstat
;
799 while ((stat
= bpstat_num (&bs
, &num
)) != 0)
802 set_ignore_count (num
,
803 parse_and_eval_long (args
) - 1,
805 /* set_ignore_count prints a message ending with a period.
806 So print two spaces before "Continuing.". */
808 printf_filtered (" ");
812 if (!stopped
&& from_tty
)
815 ("Not stopped at any breakpoint; argument ignored.\n");
820 printf_filtered (_("Continuing.\n"));
822 continue_1 (all_threads
);
825 /* Record the starting point of a "step" or "next" command. */
828 set_step_frame (void)
830 struct symtab_and_line sal
;
832 find_frame_sal (get_current_frame (), &sal
);
833 set_step_info (get_current_frame (), sal
);
836 /* Step until outside of current statement. */
839 step_command (char *count_string
, int from_tty
)
841 step_1 (0, 0, count_string
);
844 /* Likewise, but skip over subroutine calls as if single instructions. */
847 next_command (char *count_string
, int from_tty
)
849 step_1 (1, 0, count_string
);
852 /* Likewise, but step only one instruction. */
855 stepi_command (char *count_string
, int from_tty
)
857 step_1 (0, 1, count_string
);
861 nexti_command (char *count_string
, int from_tty
)
863 step_1 (1, 1, count_string
);
867 delete_longjmp_breakpoint_cleanup (void *arg
)
869 int thread
= * (int *) arg
;
870 delete_longjmp_breakpoint (thread
);
874 step_1 (int skip_subroutines
, int single_inst
, char *count_string
)
877 struct cleanup
*cleanups
= make_cleanup (null_cleanup
, NULL
);
882 ensure_not_tfind_mode ();
883 ensure_valid_thread ();
884 ensure_not_running ();
887 async_exec
= strip_bg_char (&count_string
);
889 /* If we get a request for running in the bg but the target
890 doesn't support it, error out. */
891 if (async_exec
&& !target_can_async_p ())
892 error (_("Asynchronous execution not supported on this target."));
894 /* If we don't get a request of running in the bg, then we need
895 to simulate synchronous (fg) execution. */
896 if (!async_exec
&& target_can_async_p ())
898 /* Simulate synchronous execution. */
899 async_disable_stdin ();
902 count
= count_string
? parse_and_eval_long (count_string
) : 1;
904 if (!single_inst
|| skip_subroutines
) /* Leave si command alone. */
906 struct thread_info
*tp
= inferior_thread ();
908 if (in_thread_list (inferior_ptid
))
909 thread
= pid_to_thread_id (inferior_ptid
);
911 set_longjmp_breakpoint (tp
, get_frame_id (get_current_frame ()));
913 make_cleanup (delete_longjmp_breakpoint_cleanup
, &thread
);
916 /* In synchronous case, all is well; each step_once call will step once. */
917 if (!target_can_async_p ())
919 for (; count
> 0; count
--)
921 step_once (skip_subroutines
, single_inst
, count
, thread
);
923 if (!target_has_execution
)
927 struct thread_info
*tp
= inferior_thread ();
929 if (!tp
->control
.stop_step
|| !tp
->step_multi
)
931 /* If we stopped for some reason that is not stepping
932 there are no further steps to make. */
939 do_cleanups (cleanups
);
943 /* In the case of an asynchronous target things get complicated;
944 do only one step for now, before returning control to the
945 event loop. Let the continuation figure out how many other
946 steps we need to do, and handle them one at the time, through
948 step_once (skip_subroutines
, single_inst
, count
, thread
);
950 /* We are running, and the continuation is installed. It will
951 disable the longjmp breakpoint as appropriate. */
952 discard_cleanups (cleanups
);
956 struct step_1_continuation_args
959 int skip_subroutines
;
964 /* Called after we are done with one step operation, to check whether
965 we need to step again, before we print the prompt and return control
966 to the user. If count is > 1, we will need to do one more call to
967 proceed(), via step_once(). Basically it is like step_once and
968 step_1_continuation are co-recursive. */
970 step_1_continuation (void *args
, int err
)
972 struct step_1_continuation_args
*a
= args
;
974 if (target_has_execution
)
976 struct thread_info
*tp
;
978 tp
= inferior_thread ();
980 && tp
->step_multi
&& tp
->control
.stop_step
)
982 /* There are more steps to make, and we did stop due to
983 ending a stepping range. Do another step. */
984 step_once (a
->skip_subroutines
, a
->single_inst
,
985 a
->count
- 1, a
->thread
);
991 /* We either hit an error, or stopped for some reason that is
992 not stepping, or there are no further steps to make.
994 if (!a
->single_inst
|| a
->skip_subroutines
)
995 delete_longjmp_breakpoint (a
->thread
);
998 /* Do just one step operation. This is useful to implement the 'step
999 n' kind of commands. In case of asynchronous targets, we will have
1000 to set up a continuation to be done after the target stops (after
1001 this one step). For synch targets, the caller handles further
1005 step_once (int skip_subroutines
, int single_inst
, int count
, int thread
)
1007 struct frame_info
*frame
= get_current_frame ();
1011 /* Don't assume THREAD is a valid thread id. It is set to -1 if
1012 the longjmp breakpoint was not required. Use the
1013 INFERIOR_PTID thread instead, which is the same thread when
1015 struct thread_info
*tp
= inferior_thread ();
1017 clear_proceed_status ();
1024 /* Step at an inlined function behaves like "down". */
1025 if (!skip_subroutines
1026 && inline_skipped_frames (inferior_ptid
))
1030 /* Pretend that we've ran. */
1031 resume_ptid
= user_visible_resume_ptid (1);
1032 set_running (resume_ptid
, 1);
1034 step_into_inline_frame (inferior_ptid
);
1036 step_once (skip_subroutines
, single_inst
, count
- 1, thread
);
1039 /* Pretend that we've stopped. */
1042 if (target_can_async_p ())
1043 inferior_event_handler (INF_EXEC_COMPLETE
, NULL
);
1048 pc
= get_frame_pc (frame
);
1049 find_pc_line_pc_range (pc
,
1050 &tp
->control
.step_range_start
,
1051 &tp
->control
.step_range_end
);
1053 tp
->control
.may_range_step
= 1;
1055 /* If we have no line info, switch to stepi mode. */
1056 if (tp
->control
.step_range_end
== 0 && step_stop_if_no_debug
)
1058 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1059 tp
->control
.may_range_step
= 0;
1061 else if (tp
->control
.step_range_end
== 0)
1065 if (find_pc_partial_function (pc
, &name
,
1066 &tp
->control
.step_range_start
,
1067 &tp
->control
.step_range_end
) == 0)
1068 error (_("Cannot find bounds of current function"));
1070 target_terminal_ours ();
1071 printf_filtered (_("Single stepping until exit from function %s,"
1072 "\nwhich has no line number information.\n"),
1078 /* Say we are stepping, but stop after one insn whatever it does. */
1079 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1080 if (!skip_subroutines
)
1082 Don't step over function calls, not even to functions lacking
1084 tp
->control
.step_over_calls
= STEP_OVER_NONE
;
1087 if (skip_subroutines
)
1088 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1090 tp
->step_multi
= (count
> 1);
1091 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 1);
1093 /* For async targets, register a continuation to do any
1094 additional steps. For sync targets, the caller will handle
1095 further stepping. */
1096 if (target_can_async_p ())
1098 struct step_1_continuation_args
*args
;
1100 args
= xmalloc (sizeof (*args
));
1101 args
->skip_subroutines
= skip_subroutines
;
1102 args
->single_inst
= single_inst
;
1103 args
->count
= count
;
1104 args
->thread
= thread
;
1106 add_intermediate_continuation (tp
, step_1_continuation
, args
, xfree
);
1112 /* Continue program at specified address. */
1115 jump_command (char *arg
, int from_tty
)
1117 struct gdbarch
*gdbarch
= get_current_arch ();
1119 struct symtabs_and_lines sals
;
1120 struct symtab_and_line sal
;
1126 ensure_not_tfind_mode ();
1127 ensure_valid_thread ();
1128 ensure_not_running ();
1130 /* Find out whether we must run in the background. */
1132 async_exec
= strip_bg_char (&arg
);
1134 /* If we must run in the background, but the target can't do it,
1136 if (async_exec
&& !target_can_async_p ())
1137 error (_("Asynchronous execution not supported on this target."));
1140 error_no_arg (_("starting address"));
1142 sals
= decode_line_with_last_displayed (arg
, DECODE_LINE_FUNFIRSTLINE
);
1143 if (sals
.nelts
!= 1)
1145 error (_("Unreasonable jump request"));
1151 if (sal
.symtab
== 0 && sal
.pc
== 0)
1152 error (_("No source file has been specified."));
1154 resolve_sal_pc (&sal
); /* May error out. */
1156 /* See if we are trying to jump to another function. */
1157 fn
= get_frame_function (get_current_frame ());
1158 sfn
= find_pc_function (sal
.pc
);
1159 if (fn
!= NULL
&& sfn
!= fn
)
1161 if (!query (_("Line %d is not in `%s'. Jump anyway? "), sal
.line
,
1162 SYMBOL_PRINT_NAME (fn
)))
1164 error (_("Not confirmed."));
1171 fixup_symbol_section (sfn
, 0);
1172 if (section_is_overlay (SYMBOL_OBJ_SECTION (SYMBOL_OBJFILE (sfn
), sfn
)) &&
1173 !section_is_mapped (SYMBOL_OBJ_SECTION (SYMBOL_OBJFILE (sfn
), sfn
)))
1175 if (!query (_("WARNING!!! Destination is in "
1176 "unmapped overlay! Jump anyway? ")))
1178 error (_("Not confirmed."));
1188 printf_filtered (_("Continuing at "));
1189 fputs_filtered (paddress (gdbarch
, addr
), gdb_stdout
);
1190 printf_filtered (".\n");
1193 /* If we are not asked to run in the bg, then prepare to run in the
1194 foreground, synchronously. */
1195 if (!async_exec
&& target_can_async_p ())
1197 /* Simulate synchronous execution. */
1198 async_disable_stdin ();
1201 clear_proceed_status ();
1202 proceed (addr
, GDB_SIGNAL_0
, 0);
1206 /* Go to line or address in current procedure. */
1208 go_command (char *line_no
, int from_tty
)
1210 if (line_no
== (char *) NULL
|| !*line_no
)
1211 printf_filtered (_("Usage: go <location>\n"));
1214 tbreak_command (line_no
, from_tty
);
1215 jump_command (line_no
, from_tty
);
1220 /* Continue program giving it specified signal. */
1223 signal_command (char *signum_exp
, int from_tty
)
1225 enum gdb_signal oursig
;
1228 dont_repeat (); /* Too dangerous. */
1230 ensure_not_tfind_mode ();
1231 ensure_valid_thread ();
1232 ensure_not_running ();
1234 /* Find out whether we must run in the background. */
1235 if (signum_exp
!= NULL
)
1236 async_exec
= strip_bg_char (&signum_exp
);
1238 /* If we must run in the background, but the target can't do it,
1240 if (async_exec
&& !target_can_async_p ())
1241 error (_("Asynchronous execution not supported on this target."));
1243 /* If we are not asked to run in the bg, then prepare to run in the
1244 foreground, synchronously. */
1245 if (!async_exec
&& target_can_async_p ())
1247 /* Simulate synchronous execution. */
1248 async_disable_stdin ();
1252 error_no_arg (_("signal number"));
1254 /* It would be even slicker to make signal names be valid expressions,
1255 (the type could be "enum $signal" or some such), then the user could
1256 assign them to convenience variables. */
1257 oursig
= gdb_signal_from_name (signum_exp
);
1259 if (oursig
== GDB_SIGNAL_UNKNOWN
)
1261 /* No, try numeric. */
1262 int num
= parse_and_eval_long (signum_exp
);
1265 oursig
= GDB_SIGNAL_0
;
1267 oursig
= gdb_signal_from_command (num
);
1272 if (oursig
== GDB_SIGNAL_0
)
1273 printf_filtered (_("Continuing with no signal.\n"));
1275 printf_filtered (_("Continuing with signal %s.\n"),
1276 gdb_signal_to_name (oursig
));
1279 clear_proceed_status ();
1280 proceed ((CORE_ADDR
) -1, oursig
, 0);
1283 /* Continuation args to be passed to the "until" command
1285 struct until_next_continuation_args
1287 /* The thread that was current when the command was executed. */
1291 /* A continuation callback for until_next_command. */
1294 until_next_continuation (void *arg
, int err
)
1296 struct until_next_continuation_args
*a
= arg
;
1298 delete_longjmp_breakpoint (a
->thread
);
1301 /* Proceed until we reach a different source line with pc greater than
1302 our current one or exit the function. We skip calls in both cases.
1304 Note that eventually this command should probably be changed so
1305 that only source lines are printed out when we hit the breakpoint
1306 we set. This may involve changes to wait_for_inferior and the
1307 proceed status code. */
1310 until_next_command (int from_tty
)
1312 struct frame_info
*frame
;
1314 struct symbol
*func
;
1315 struct symtab_and_line sal
;
1316 struct thread_info
*tp
= inferior_thread ();
1317 int thread
= tp
->num
;
1318 struct cleanup
*old_chain
;
1320 clear_proceed_status ();
1323 frame
= get_current_frame ();
1325 /* Step until either exited from this function or greater
1326 than the current line (if in symbolic section) or pc (if
1329 pc
= get_frame_pc (frame
);
1330 func
= find_pc_function (pc
);
1334 struct bound_minimal_symbol msymbol
= lookup_minimal_symbol_by_pc (pc
);
1336 if (msymbol
.minsym
== NULL
)
1337 error (_("Execution is not within a known function."));
1339 tp
->control
.step_range_start
= SYMBOL_VALUE_ADDRESS (msymbol
.minsym
);
1340 tp
->control
.step_range_end
= pc
;
1344 sal
= find_pc_line (pc
, 0);
1346 tp
->control
.step_range_start
= BLOCK_START (SYMBOL_BLOCK_VALUE (func
));
1347 tp
->control
.step_range_end
= sal
.end
;
1349 tp
->control
.may_range_step
= 1;
1351 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1353 tp
->step_multi
= 0; /* Only one call to proceed */
1355 set_longjmp_breakpoint (tp
, get_frame_id (frame
));
1356 old_chain
= make_cleanup (delete_longjmp_breakpoint_cleanup
, &thread
);
1358 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 1);
1360 if (target_can_async_p () && is_running (inferior_ptid
))
1362 struct until_next_continuation_args
*cont_args
;
1364 discard_cleanups (old_chain
);
1365 cont_args
= XNEW (struct until_next_continuation_args
);
1366 cont_args
->thread
= inferior_thread ()->num
;
1368 add_continuation (tp
, until_next_continuation
, cont_args
, xfree
);
1371 do_cleanups (old_chain
);
1375 until_command (char *arg
, int from_tty
)
1380 ensure_not_tfind_mode ();
1381 ensure_valid_thread ();
1382 ensure_not_running ();
1384 /* Find out whether we must run in the background. */
1386 async_exec
= strip_bg_char (&arg
);
1388 /* If we must run in the background, but the target can't do it,
1390 if (async_exec
&& !target_can_async_p ())
1391 error (_("Asynchronous execution not supported on this target."));
1393 /* If we are not asked to run in the bg, then prepare to run in the
1394 foreground, synchronously. */
1395 if (!async_exec
&& target_can_async_p ())
1397 /* Simulate synchronous execution. */
1398 async_disable_stdin ();
1402 until_break_command (arg
, from_tty
, 0);
1404 until_next_command (from_tty
);
1408 advance_command (char *arg
, int from_tty
)
1413 ensure_not_tfind_mode ();
1414 ensure_valid_thread ();
1415 ensure_not_running ();
1418 error_no_arg (_("a location"));
1420 /* Find out whether we must run in the background. */
1422 async_exec
= strip_bg_char (&arg
);
1424 /* If we must run in the background, but the target can't do it,
1426 if (async_exec
&& !target_can_async_p ())
1427 error (_("Asynchronous execution not supported on this target."));
1429 /* If we are not asked to run in the bg, then prepare to run in the
1430 foreground, synchronously. */
1431 if (!async_exec
&& target_can_async_p ())
1433 /* Simulate synchronous execution. */
1434 async_disable_stdin ();
1437 until_break_command (arg
, from_tty
, 1);
1440 /* Return the value of the result of a function at the end of a 'finish'
1444 get_return_value (struct value
*function
, struct type
*value_type
)
1446 struct regcache
*stop_regs
= stop_registers
;
1447 struct gdbarch
*gdbarch
;
1448 struct value
*value
;
1449 struct cleanup
*cleanup
= make_cleanup (null_cleanup
, NULL
);
1451 /* If stop_registers were not saved, use the current registers. */
1454 stop_regs
= regcache_dup (get_current_regcache ());
1455 make_cleanup_regcache_xfree (stop_regs
);
1458 gdbarch
= get_regcache_arch (stop_regs
);
1460 CHECK_TYPEDEF (value_type
);
1461 gdb_assert (TYPE_CODE (value_type
) != TYPE_CODE_VOID
);
1463 /* FIXME: 2003-09-27: When returning from a nested inferior function
1464 call, it's possible (with no help from the architecture vector)
1465 to locate and return/print a "struct return" value. This is just
1466 a more complicated case of what is already being done in the
1467 inferior function call code. In fact, when inferior function
1468 calls are made async, this will likely be made the norm. */
1470 switch (gdbarch_return_value (gdbarch
, function
, value_type
,
1473 case RETURN_VALUE_REGISTER_CONVENTION
:
1474 case RETURN_VALUE_ABI_RETURNS_ADDRESS
:
1475 case RETURN_VALUE_ABI_PRESERVES_ADDRESS
:
1476 value
= allocate_value (value_type
);
1477 gdbarch_return_value (gdbarch
, function
, value_type
, stop_regs
,
1478 value_contents_raw (value
), NULL
);
1480 case RETURN_VALUE_STRUCT_CONVENTION
:
1484 internal_error (__FILE__
, __LINE__
, _("bad switch"));
1487 do_cleanups (cleanup
);
1492 /* Print the result of a function at the end of a 'finish' command. */
1495 print_return_value (struct value
*function
, struct type
*value_type
)
1497 struct value
*value
= get_return_value (function
, value_type
);
1498 struct ui_out
*uiout
= current_uiout
;
1502 struct value_print_options opts
;
1503 struct ui_file
*stb
;
1504 struct cleanup
*old_chain
;
1507 stb
= mem_fileopen ();
1508 old_chain
= make_cleanup_ui_file_delete (stb
);
1509 ui_out_text (uiout
, "Value returned is ");
1510 ui_out_field_fmt (uiout
, "gdb-result-var", "$%d",
1511 record_latest_value (value
));
1512 ui_out_text (uiout
, " = ");
1513 get_no_prettyformat_print_options (&opts
);
1514 value_print (value
, stb
, &opts
);
1515 ui_out_field_stream (uiout
, "return-value", stb
);
1516 ui_out_text (uiout
, "\n");
1517 do_cleanups (old_chain
);
1521 ui_out_text (uiout
, "Value returned has type: ");
1522 ui_out_field_string (uiout
, "return-type", TYPE_NAME (value_type
));
1523 ui_out_text (uiout
, ".");
1524 ui_out_text (uiout
, " Cannot determine contents\n");
1528 /* Stuff that needs to be done by the finish command after the target
1529 has stopped. In asynchronous mode, we wait for the target to stop
1530 in the call to poll or select in the event loop, so it is
1531 impossible to do all the stuff as part of the finish_command
1532 function itself. The only chance we have to complete this command
1533 is in fetch_inferior_event, which is called by the event loop as
1534 soon as it detects that the target has stopped. */
1536 struct finish_command_continuation_args
1538 /* The thread that as current when the command was executed. */
1540 struct breakpoint
*breakpoint
;
1541 struct symbol
*function
;
1545 finish_command_continuation (void *arg
, int err
)
1547 struct finish_command_continuation_args
*a
= arg
;
1551 struct thread_info
*tp
= NULL
;
1554 if (!ptid_equal (inferior_ptid
, null_ptid
)
1555 && target_has_execution
1556 && is_stopped (inferior_ptid
))
1558 tp
= inferior_thread ();
1559 bs
= tp
->control
.stop_bpstat
;
1562 if (bpstat_find_breakpoint (bs
, a
->breakpoint
) != NULL
1563 && a
->function
!= NULL
)
1565 struct type
*value_type
;
1567 value_type
= TYPE_TARGET_TYPE (SYMBOL_TYPE (a
->function
));
1569 internal_error (__FILE__
, __LINE__
,
1570 _("finish_command: function has no target type"));
1572 if (TYPE_CODE (value_type
) != TYPE_CODE_VOID
)
1574 volatile struct gdb_exception ex
;
1577 func
= read_var_value (a
->function
, get_current_frame ());
1578 TRY_CATCH (ex
, RETURN_MASK_ALL
)
1580 /* print_return_value can throw an exception in some
1581 circumstances. We need to catch this so that we still
1582 delete the breakpoint. */
1583 print_return_value (func
, value_type
);
1586 exception_print (gdb_stdout
, ex
);
1590 /* We suppress normal call of normal_stop observer and do it
1591 here so that the *stopped notification includes the return
1593 if (bs
!= NULL
&& tp
->control
.proceed_to_finish
)
1594 observer_notify_normal_stop (bs
, 1 /* print frame */);
1597 delete_breakpoint (a
->breakpoint
);
1598 delete_longjmp_breakpoint (a
->thread
);
1602 finish_command_continuation_free_arg (void *arg
)
1607 /* finish_backward -- helper function for finish_command. */
1610 finish_backward (struct symbol
*function
)
1612 struct symtab_and_line sal
;
1613 struct thread_info
*tp
= inferior_thread ();
1615 CORE_ADDR func_addr
;
1617 pc
= get_frame_pc (get_current_frame ());
1619 if (find_pc_partial_function (pc
, NULL
, &func_addr
, NULL
) == 0)
1620 internal_error (__FILE__
, __LINE__
,
1621 _("Finish: couldn't find function."));
1623 sal
= find_pc_line (func_addr
, 0);
1625 tp
->control
.proceed_to_finish
= 1;
1626 /* Special case: if we're sitting at the function entry point,
1627 then all we need to do is take a reverse singlestep. We
1628 don't need to set a breakpoint, and indeed it would do us
1631 Note that this can only happen at frame #0, since there's
1632 no way that a function up the stack can have a return address
1633 that's equal to its entry point. */
1637 struct frame_info
*frame
= get_selected_frame (NULL
);
1638 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
1639 struct symtab_and_line sr_sal
;
1641 /* Set a step-resume at the function's entry point. Once that's
1642 hit, we'll do one more step backwards. */
1645 sr_sal
.pspace
= get_frame_program_space (frame
);
1646 insert_step_resume_breakpoint_at_sal (gdbarch
,
1647 sr_sal
, null_frame_id
);
1649 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
1653 /* We're almost there -- we just need to back up by one more
1655 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1656 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 1);
1660 /* finish_forward -- helper function for finish_command. */
1663 finish_forward (struct symbol
*function
, struct frame_info
*frame
)
1665 struct frame_id frame_id
= get_frame_id (frame
);
1666 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
1667 struct symtab_and_line sal
;
1668 struct thread_info
*tp
= inferior_thread ();
1669 struct breakpoint
*breakpoint
;
1670 struct cleanup
*old_chain
;
1671 struct finish_command_continuation_args
*cargs
;
1672 int thread
= tp
->num
;
1674 sal
= find_pc_line (get_frame_pc (frame
), 0);
1675 sal
.pc
= get_frame_pc (frame
);
1677 breakpoint
= set_momentary_breakpoint (gdbarch
, sal
,
1678 get_stack_frame_id (frame
),
1681 /* set_momentary_breakpoint invalidates FRAME. */
1684 old_chain
= make_cleanup_delete_breakpoint (breakpoint
);
1686 set_longjmp_breakpoint (tp
, frame_id
);
1687 make_cleanup (delete_longjmp_breakpoint_cleanup
, &thread
);
1689 /* We want stop_registers, please... */
1690 tp
->control
.proceed_to_finish
= 1;
1691 cargs
= xmalloc (sizeof (*cargs
));
1693 cargs
->thread
= thread
;
1694 cargs
->breakpoint
= breakpoint
;
1695 cargs
->function
= function
;
1696 add_continuation (tp
, finish_command_continuation
, cargs
,
1697 finish_command_continuation_free_arg
);
1698 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
1700 discard_cleanups (old_chain
);
1701 if (!target_can_async_p ())
1702 do_all_continuations (0);
1705 /* "finish": Set a temporary breakpoint at the place the selected
1706 frame will return to, then continue. */
1709 finish_command (char *arg
, int from_tty
)
1711 struct frame_info
*frame
;
1712 struct symbol
*function
;
1717 ensure_not_tfind_mode ();
1718 ensure_valid_thread ();
1719 ensure_not_running ();
1721 /* Find out whether we must run in the background. */
1723 async_exec
= strip_bg_char (&arg
);
1725 /* If we must run in the background, but the target can't do it,
1727 if (async_exec
&& !target_can_async_p ())
1728 error (_("Asynchronous execution not supported on this target."));
1730 /* If we are not asked to run in the bg, then prepare to run in the
1731 foreground, synchronously. */
1732 if (!async_exec
&& target_can_async_p ())
1734 /* Simulate synchronous execution. */
1735 async_disable_stdin ();
1739 error (_("The \"finish\" command does not take any arguments."));
1741 frame
= get_prev_frame (get_selected_frame (_("No selected frame.")));
1743 error (_("\"finish\" not meaningful in the outermost frame."));
1745 clear_proceed_status ();
1747 /* Finishing from an inline frame is completely different. We don't
1748 try to show the "return value" - no way to locate it. So we do
1749 not need a completion. */
1750 if (get_frame_type (get_selected_frame (_("No selected frame.")))
1753 /* Claim we are stepping in the calling frame. An empty step
1754 range means that we will stop once we aren't in a function
1755 called by that frame. We don't use the magic "1" value for
1756 step_range_end, because then infrun will think this is nexti,
1757 and not step over the rest of this inlined function call. */
1758 struct thread_info
*tp
= inferior_thread ();
1759 struct symtab_and_line empty_sal
;
1761 init_sal (&empty_sal
);
1762 set_step_info (frame
, empty_sal
);
1763 tp
->control
.step_range_start
= get_frame_pc (frame
);
1764 tp
->control
.step_range_end
= tp
->control
.step_range_start
;
1765 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1767 /* Print info on the selected frame, including level number but not
1771 printf_filtered (_("Run till exit from "));
1772 print_stack_frame (get_selected_frame (NULL
), 1, LOCATION
, 0);
1775 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 1);
1779 /* Ignore TAILCALL_FRAME type frames, they were executed already before
1780 entering THISFRAME. */
1781 while (get_frame_type (frame
) == TAILCALL_FRAME
)
1782 frame
= get_prev_frame (frame
);
1784 /* Find the function we will return from. */
1786 function
= find_pc_function (get_frame_pc (get_selected_frame (NULL
)));
1788 /* Print info on the selected frame, including level number but not
1792 if (execution_direction
== EXEC_REVERSE
)
1793 printf_filtered (_("Run back to call of "));
1795 printf_filtered (_("Run till exit from "));
1797 print_stack_frame (get_selected_frame (NULL
), 1, LOCATION
, 0);
1800 if (execution_direction
== EXEC_REVERSE
)
1801 finish_backward (function
);
1803 finish_forward (function
, frame
);
1808 program_info (char *args
, int from_tty
)
1812 struct thread_info
*tp
;
1815 if (!target_has_execution
)
1817 printf_filtered (_("The program being debugged is not being run.\n"));
1822 ptid
= inferior_ptid
;
1825 struct target_waitstatus ws
;
1827 get_last_target_status (&ptid
, &ws
);
1830 if (ptid_equal (ptid
, null_ptid
) || is_exited (ptid
))
1831 error (_("Invalid selected thread."));
1832 else if (is_running (ptid
))
1833 error (_("Selected thread is running."));
1835 tp
= find_thread_ptid (ptid
);
1836 bs
= tp
->control
.stop_bpstat
;
1837 stat
= bpstat_num (&bs
, &num
);
1839 target_files_info ();
1840 printf_filtered (_("Program stopped at %s.\n"),
1841 paddress (target_gdbarch (), stop_pc
));
1842 if (tp
->control
.stop_step
)
1843 printf_filtered (_("It stopped after being stepped.\n"));
1846 /* There may be several breakpoints in the same place, so this
1847 isn't as strange as it seems. */
1852 printf_filtered (_("It stopped at a breakpoint "
1853 "that has since been deleted.\n"));
1856 printf_filtered (_("It stopped at breakpoint %d.\n"), num
);
1857 stat
= bpstat_num (&bs
, &num
);
1860 else if (tp
->suspend
.stop_signal
!= GDB_SIGNAL_0
)
1862 printf_filtered (_("It stopped with signal %s, %s.\n"),
1863 gdb_signal_to_name (tp
->suspend
.stop_signal
),
1864 gdb_signal_to_string (tp
->suspend
.stop_signal
));
1869 printf_filtered (_("Type \"info stack\" or \"info "
1870 "registers\" for more information.\n"));
1875 environment_info (char *var
, int from_tty
)
1879 char *val
= get_in_environ (current_inferior ()->environment
, var
);
1883 puts_filtered (var
);
1884 puts_filtered (" = ");
1885 puts_filtered (val
);
1886 puts_filtered ("\n");
1890 puts_filtered ("Environment variable \"");
1891 puts_filtered (var
);
1892 puts_filtered ("\" not defined.\n");
1897 char **vector
= environ_vector (current_inferior ()->environment
);
1901 puts_filtered (*vector
++);
1902 puts_filtered ("\n");
1908 set_environment_command (char *arg
, int from_tty
)
1910 char *p
, *val
, *var
;
1914 error_no_arg (_("environment variable and value"));
1916 /* Find seperation between variable name and value. */
1917 p
= (char *) strchr (arg
, '=');
1918 val
= (char *) strchr (arg
, ' ');
1920 if (p
!= 0 && val
!= 0)
1922 /* We have both a space and an equals. If the space is before the
1923 equals, walk forward over the spaces til we see a nonspace
1924 (possibly the equals). */
1929 /* Now if the = is after the char following the spaces,
1930 take the char following the spaces. */
1934 else if (val
!= 0 && p
== 0)
1938 error_no_arg (_("environment variable to set"));
1940 if (p
== 0 || p
[1] == 0)
1944 p
= arg
+ strlen (arg
); /* So that savestring below will work. */
1948 /* Not setting variable value to null. */
1950 while (*val
== ' ' || *val
== '\t')
1954 while (p
!= arg
&& (p
[-1] == ' ' || p
[-1] == '\t'))
1957 var
= savestring (arg
, p
- arg
);
1960 printf_filtered (_("Setting environment variable "
1961 "\"%s\" to null value.\n"),
1963 set_in_environ (current_inferior ()->environment
, var
, "");
1966 set_in_environ (current_inferior ()->environment
, var
, val
);
1971 unset_environment_command (char *var
, int from_tty
)
1975 /* If there is no argument, delete all environment variables.
1976 Ask for confirmation if reading from the terminal. */
1977 if (!from_tty
|| query (_("Delete all environment variables? ")))
1979 free_environ (current_inferior ()->environment
);
1980 current_inferior ()->environment
= make_environ ();
1984 unset_in_environ (current_inferior ()->environment
, var
);
1987 /* Handle the execution path (PATH variable). */
1989 static const char path_var_name
[] = "PATH";
1992 path_info (char *args
, int from_tty
)
1994 puts_filtered ("Executable and object file path: ");
1995 puts_filtered (get_in_environ (current_inferior ()->environment
,
1997 puts_filtered ("\n");
2000 /* Add zero or more directories to the front of the execution path. */
2003 path_command (char *dirname
, int from_tty
)
2009 env
= get_in_environ (current_inferior ()->environment
, path_var_name
);
2010 /* Can be null if path is not set. */
2013 exec_path
= xstrdup (env
);
2014 mod_path (dirname
, &exec_path
);
2015 set_in_environ (current_inferior ()->environment
, path_var_name
, exec_path
);
2018 path_info ((char *) NULL
, from_tty
);
2022 /* Print out the register NAME with value VAL, to FILE, in the default
2026 default_print_one_register_info (struct ui_file
*file
,
2030 struct type
*regtype
= value_type (val
);
2032 fputs_filtered (name
, file
);
2033 print_spaces_filtered (15 - strlen (name
), file
);
2035 if (!value_entirely_available (val
))
2037 fprintf_filtered (file
, "*value not available*\n");
2040 else if (value_optimized_out (val
))
2042 val_print_optimized_out (val
, file
);
2043 fprintf_filtered (file
, "\n");
2047 /* If virtual format is floating, print it that way, and in raw
2049 if (TYPE_CODE (regtype
) == TYPE_CODE_FLT
2050 || TYPE_CODE (regtype
) == TYPE_CODE_DECFLOAT
)
2053 struct value_print_options opts
;
2054 const gdb_byte
*valaddr
= value_contents_for_printing (val
);
2055 enum bfd_endian byte_order
= gdbarch_byte_order (get_type_arch (regtype
));
2057 get_user_print_options (&opts
);
2061 value_contents_for_printing (val
),
2062 value_embedded_offset (val
), 0,
2063 file
, 0, val
, &opts
, current_language
);
2065 fprintf_filtered (file
, "\t(raw ");
2066 print_hex_chars (file
, valaddr
, TYPE_LENGTH (regtype
), byte_order
);
2067 fprintf_filtered (file
, ")");
2071 struct value_print_options opts
;
2073 /* Print the register in hex. */
2074 get_formatted_print_options (&opts
, 'x');
2077 value_contents_for_printing (val
),
2078 value_embedded_offset (val
), 0,
2079 file
, 0, val
, &opts
, current_language
);
2080 /* If not a vector register, print it also according to its
2082 if (TYPE_VECTOR (regtype
) == 0)
2084 get_user_print_options (&opts
);
2086 fprintf_filtered (file
, "\t");
2088 value_contents_for_printing (val
),
2089 value_embedded_offset (val
), 0,
2090 file
, 0, val
, &opts
, current_language
);
2094 fprintf_filtered (file
, "\n");
2097 /* Print out the machine register regnum. If regnum is -1, print all
2098 registers (print_all == 1) or all non-float and non-vector
2099 registers (print_all == 0).
2101 For most machines, having all_registers_info() print the
2102 register(s) one per line is good enough. If a different format is
2103 required, (eg, for MIPS or Pyramid 90x, which both have lots of
2104 regs), or there is an existing convention for showing all the
2105 registers, define the architecture method PRINT_REGISTERS_INFO to
2106 provide that format. */
2109 default_print_registers_info (struct gdbarch
*gdbarch
,
2110 struct ui_file
*file
,
2111 struct frame_info
*frame
,
2112 int regnum
, int print_all
)
2115 const int numregs
= gdbarch_num_regs (gdbarch
)
2116 + gdbarch_num_pseudo_regs (gdbarch
);
2118 for (i
= 0; i
< numregs
; i
++)
2120 /* Decide between printing all regs, non-float / vector regs, or
2126 if (!gdbarch_register_reggroup_p (gdbarch
, i
, all_reggroup
))
2131 if (!gdbarch_register_reggroup_p (gdbarch
, i
, general_reggroup
))
2141 /* If the register name is empty, it is undefined for this
2142 processor, so don't display anything. */
2143 if (gdbarch_register_name (gdbarch
, i
) == NULL
2144 || *(gdbarch_register_name (gdbarch
, i
)) == '\0')
2147 default_print_one_register_info (file
,
2148 gdbarch_register_name (gdbarch
, i
),
2149 value_of_register (i
, frame
));
2154 registers_info (char *addr_exp
, int fpregs
)
2156 struct frame_info
*frame
;
2157 struct gdbarch
*gdbarch
;
2159 if (!target_has_registers
)
2160 error (_("The program has no registers now."));
2161 frame
= get_selected_frame (NULL
);
2162 gdbarch
= get_frame_arch (frame
);
2166 gdbarch_print_registers_info (gdbarch
, gdb_stdout
,
2171 while (*addr_exp
!= '\0')
2176 /* Skip leading white space. */
2177 addr_exp
= skip_spaces (addr_exp
);
2179 /* Discard any leading ``$''. Check that there is something
2180 resembling a register following it. */
2181 if (addr_exp
[0] == '$')
2183 if (isspace ((*addr_exp
)) || (*addr_exp
) == '\0')
2184 error (_("Missing register name"));
2186 /* Find the start/end of this register name/num/group. */
2188 while ((*addr_exp
) != '\0' && !isspace ((*addr_exp
)))
2192 /* Figure out what we've found and display it. */
2194 /* A register name? */
2196 int regnum
= user_reg_map_name_to_regnum (gdbarch
, start
, end
- start
);
2200 /* User registers lie completely outside of the range of
2201 normal registers. Catch them early so that the target
2203 if (regnum
>= gdbarch_num_regs (gdbarch
)
2204 + gdbarch_num_pseudo_regs (gdbarch
))
2206 struct value
*regval
= value_of_user_reg (regnum
, frame
);
2207 const char *regname
= user_reg_map_regnum_to_name (gdbarch
,
2210 /* Print in the same fashion
2211 gdbarch_print_registers_info's default
2212 implementation prints. */
2213 default_print_one_register_info (gdb_stdout
,
2218 gdbarch_print_registers_info (gdbarch
, gdb_stdout
,
2219 frame
, regnum
, fpregs
);
2224 /* A register group? */
2226 struct reggroup
*group
;
2228 for (group
= reggroup_next (gdbarch
, NULL
);
2230 group
= reggroup_next (gdbarch
, group
))
2232 /* Don't bother with a length check. Should the user
2233 enter a short register group name, go with the first
2234 group that matches. */
2235 if (strncmp (start
, reggroup_name (group
), end
- start
) == 0)
2243 regnum
< gdbarch_num_regs (gdbarch
)
2244 + gdbarch_num_pseudo_regs (gdbarch
);
2247 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, group
))
2248 gdbarch_print_registers_info (gdbarch
,
2256 /* Nothing matched. */
2257 error (_("Invalid register `%.*s'"), (int) (end
- start
), start
);
2262 all_registers_info (char *addr_exp
, int from_tty
)
2264 registers_info (addr_exp
, 1);
2268 nofp_registers_info (char *addr_exp
, int from_tty
)
2270 registers_info (addr_exp
, 0);
2274 print_vector_info (struct ui_file
*file
,
2275 struct frame_info
*frame
, const char *args
)
2277 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
2279 if (gdbarch_print_vector_info_p (gdbarch
))
2280 gdbarch_print_vector_info (gdbarch
, file
, frame
, args
);
2284 int printed_something
= 0;
2287 regnum
< gdbarch_num_regs (gdbarch
)
2288 + gdbarch_num_pseudo_regs (gdbarch
);
2291 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, vector_reggroup
))
2293 printed_something
= 1;
2294 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
2297 if (!printed_something
)
2298 fprintf_filtered (file
, "No vector information\n");
2303 vector_info (char *args
, int from_tty
)
2305 if (!target_has_registers
)
2306 error (_("The program has no registers now."));
2308 print_vector_info (gdb_stdout
, get_selected_frame (NULL
), args
);
2311 /* Kill the inferior process. Make us have no inferior. */
2314 kill_command (char *arg
, int from_tty
)
2316 /* FIXME: This should not really be inferior_ptid (or target_has_execution).
2317 It should be a distinct flag that indicates that a target is active, cuz
2318 some targets don't have processes! */
2320 if (ptid_equal (inferior_ptid
, null_ptid
))
2321 error (_("The program is not being run."));
2322 if (!query (_("Kill the program being debugged? ")))
2323 error (_("Not confirmed."));
2326 /* If we still have other inferiors to debug, then don't mess with
2327 with their threads. */
2328 if (!have_inferiors ())
2330 init_thread_list (); /* Destroy thread info. */
2332 /* Killing off the inferior can leave us with a core file. If
2333 so, print the state we are left in. */
2334 if (target_has_stack
)
2336 printf_filtered (_("In %s,\n"), target_longname
);
2337 print_stack_frame (get_selected_frame (NULL
), 1, SRC_AND_LOC
, 1);
2340 bfd_cache_close_all ();
2343 /* Used in `attach&' command. ARG is a point to an integer
2344 representing a process id. Proceed threads of this process iff
2345 they stopped due to debugger request, and when they did, they
2346 reported a clean stop (GDB_SIGNAL_0). Do not proceed threads
2347 that have been explicitly been told to stop. */
2350 proceed_after_attach_callback (struct thread_info
*thread
,
2353 int pid
= * (int *) arg
;
2355 if (ptid_get_pid (thread
->ptid
) == pid
2356 && !is_exited (thread
->ptid
)
2357 && !is_executing (thread
->ptid
)
2358 && !thread
->stop_requested
2359 && thread
->suspend
.stop_signal
== GDB_SIGNAL_0
)
2361 switch_to_thread (thread
->ptid
);
2362 clear_proceed_status ();
2363 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
2370 proceed_after_attach (int pid
)
2372 /* Don't error out if the current thread is running, because
2373 there may be other stopped threads. */
2374 struct cleanup
*old_chain
;
2376 /* Backup current thread and selected frame. */
2377 old_chain
= make_cleanup_restore_current_thread ();
2379 iterate_over_threads (proceed_after_attach_callback
, &pid
);
2381 /* Restore selected ptid. */
2382 do_cleanups (old_chain
);
2387 * Should save/restore the tty state since it might be that the
2388 * program to be debugged was started on this tty and it wants
2389 * the tty in some state other than what we want. If it's running
2390 * on another terminal or without a terminal, then saving and
2391 * restoring the tty state is a harmless no-op.
2392 * This only needs to be done if we are attaching to a process.
2395 /* attach_command --
2396 takes a program started up outside of gdb and ``attaches'' to it.
2397 This stops it cold in its tracks and allows us to start debugging it.
2398 and wait for the trace-trap that results from attaching. */
2401 attach_command_post_wait (char *args
, int from_tty
, int async_exec
)
2404 char *full_exec_path
= NULL
;
2405 struct inferior
*inferior
;
2407 inferior
= current_inferior ();
2408 inferior
->control
.stop_soon
= NO_STOP_QUIETLY
;
2410 /* If no exec file is yet known, try to determine it from the
2412 exec_file
= (char *) get_exec_file (0);
2415 exec_file
= target_pid_to_exec_file (ptid_get_pid (inferior_ptid
));
2418 /* It's possible we don't have a full path, but rather just a
2419 filename. Some targets, such as HP-UX, don't provide the
2422 Attempt to qualify the filename against the source path.
2423 (If that fails, we'll just fall back on the original
2424 filename. Not much more we can do...) */
2426 if (!source_full_path_of (exec_file
, &full_exec_path
))
2427 full_exec_path
= xstrdup (exec_file
);
2429 exec_file_attach (full_exec_path
, from_tty
);
2430 symbol_file_add_main (full_exec_path
, from_tty
);
2435 reopen_exec_file ();
2439 /* Take any necessary post-attaching actions for this platform. */
2440 target_post_attach (ptid_get_pid (inferior_ptid
));
2442 post_create_inferior (¤t_target
, from_tty
);
2444 /* Install inferior's terminal modes. */
2445 target_terminal_inferior ();
2449 /* The user requested an `attach&', so be sure to leave threads
2450 that didn't get a signal running. */
2452 /* Immediatelly resume all suspended threads of this inferior,
2453 and this inferior only. This should have no effect on
2454 already running threads. If a thread has been stopped with a
2455 signal, leave it be. */
2457 proceed_after_attach (inferior
->pid
);
2460 if (inferior_thread ()->suspend
.stop_signal
== GDB_SIGNAL_0
)
2462 clear_proceed_status ();
2463 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
2469 /* The user requested a plain `attach', so be sure to leave
2470 the inferior stopped. */
2472 if (target_can_async_p ())
2473 async_enable_stdin ();
2475 /* At least the current thread is already stopped. */
2477 /* In all-stop, by definition, all threads have to be already
2478 stopped at this point. In non-stop, however, although the
2479 selected thread is stopped, others may still be executing.
2480 Be sure to explicitly stop all threads of the process. This
2481 should have no effect on already stopped threads. */
2483 target_stop (pid_to_ptid (inferior
->pid
));
2485 /* Tell the user/frontend where we're stopped. */
2487 if (deprecated_attach_hook
)
2488 deprecated_attach_hook ();
2492 struct attach_command_continuation_args
2500 attach_command_continuation (void *args
, int err
)
2502 struct attach_command_continuation_args
*a
= args
;
2507 attach_command_post_wait (a
->args
, a
->from_tty
, a
->async_exec
);
2511 attach_command_continuation_free_args (void *args
)
2513 struct attach_command_continuation_args
*a
= args
;
2520 attach_command (char *args
, int from_tty
)
2523 struct cleanup
*back_to
= make_cleanup (null_cleanup
, NULL
);
2525 dont_repeat (); /* Not for the faint of heart */
2527 if (gdbarch_has_global_solist (target_gdbarch ()))
2528 /* Don't complain if all processes share the same symbol
2531 else if (target_has_execution
)
2533 if (query (_("A program is being debugged already. Kill it? ")))
2536 error (_("Not killed."));
2539 /* Clean up any leftovers from other runs. Some other things from
2540 this function should probably be moved into target_pre_inferior. */
2541 target_pre_inferior (from_tty
);
2543 if (non_stop
&& !target_supports_non_stop ())
2544 error (_("Cannot attach to this target in non-stop mode"));
2548 async_exec
= strip_bg_char (&args
);
2550 /* If we get a request for running in the bg but the target
2551 doesn't support it, error out. */
2552 if (async_exec
&& !target_can_async_p ())
2553 error (_("Asynchronous execution not supported on this target."));
2556 /* If we don't get a request of running in the bg, then we need
2557 to simulate synchronous (fg) execution. */
2558 if (!async_exec
&& target_can_async_p ())
2560 /* Simulate synchronous execution. */
2561 async_disable_stdin ();
2562 make_cleanup ((make_cleanup_ftype
*)async_enable_stdin
, NULL
);
2565 target_attach (args
, from_tty
);
2567 /* Set up the "saved terminal modes" of the inferior
2568 based on what modes we are starting it with. */
2569 target_terminal_init ();
2571 /* Set up execution context to know that we should return from
2572 wait_for_inferior as soon as the target reports a stop. */
2573 init_wait_for_inferior ();
2574 clear_proceed_status ();
2578 /* If we find that the current thread isn't stopped, explicitly
2579 do so now, because we're going to install breakpoints and
2583 /* The user requested an `attach&'; stop just one thread. */
2584 target_stop (inferior_ptid
);
2586 /* The user requested an `attach', so stop all threads of this
2588 target_stop (pid_to_ptid (ptid_get_pid (inferior_ptid
)));
2591 /* Some system don't generate traps when attaching to inferior.
2592 E.g. Mach 3 or GNU hurd. */
2593 if (!target_attach_no_wait
)
2595 struct inferior
*inferior
= current_inferior ();
2597 /* Careful here. See comments in inferior.h. Basically some
2598 OSes don't ignore SIGSTOPs on continue requests anymore. We
2599 need a way for handle_inferior_event to reset the stop_signal
2600 variable after an attach, and this is what
2601 STOP_QUIETLY_NO_SIGSTOP is for. */
2602 inferior
->control
.stop_soon
= STOP_QUIETLY_NO_SIGSTOP
;
2604 if (target_can_async_p ())
2606 /* sync_execution mode. Wait for stop. */
2607 struct attach_command_continuation_args
*a
;
2609 a
= xmalloc (sizeof (*a
));
2610 a
->args
= xstrdup (args
);
2611 a
->from_tty
= from_tty
;
2612 a
->async_exec
= async_exec
;
2613 add_inferior_continuation (attach_command_continuation
, a
,
2614 attach_command_continuation_free_args
);
2615 discard_cleanups (back_to
);
2619 wait_for_inferior ();
2622 attach_command_post_wait (args
, from_tty
, async_exec
);
2623 discard_cleanups (back_to
);
2626 /* We had just found out that the target was already attached to an
2627 inferior. PTID points at a thread of this new inferior, that is
2628 the most likely to be stopped right now, but not necessarily so.
2629 The new inferior is assumed to be already added to the inferior
2630 list at this point. If LEAVE_RUNNING, then leave the threads of
2631 this inferior running, except those we've explicitly seen reported
2635 notice_new_inferior (ptid_t ptid
, int leave_running
, int from_tty
)
2637 struct cleanup
* old_chain
;
2640 old_chain
= make_cleanup (null_cleanup
, NULL
);
2642 /* If in non-stop, leave threads as running as they were. If
2643 they're stopped for some reason other than us telling it to, the
2644 target reports a signal != GDB_SIGNAL_0. We don't try to
2645 resume threads with such a stop signal. */
2646 async_exec
= non_stop
;
2648 if (!ptid_equal (inferior_ptid
, null_ptid
))
2649 make_cleanup_restore_current_thread ();
2651 switch_to_thread (ptid
);
2653 /* When we "notice" a new inferior we need to do all the things we
2654 would normally do if we had just attached to it. */
2656 if (is_executing (inferior_ptid
))
2658 struct inferior
*inferior
= current_inferior ();
2660 /* We're going to install breakpoints, and poke at memory,
2661 ensure that the inferior is stopped for a moment while we do
2663 target_stop (inferior_ptid
);
2665 inferior
->control
.stop_soon
= STOP_QUIETLY_REMOTE
;
2667 /* Wait for stop before proceeding. */
2668 if (target_can_async_p ())
2670 struct attach_command_continuation_args
*a
;
2672 a
= xmalloc (sizeof (*a
));
2673 a
->args
= xstrdup ("");
2674 a
->from_tty
= from_tty
;
2675 a
->async_exec
= async_exec
;
2676 add_inferior_continuation (attach_command_continuation
, a
,
2677 attach_command_continuation_free_args
);
2679 do_cleanups (old_chain
);
2683 wait_for_inferior ();
2686 async_exec
= leave_running
;
2687 attach_command_post_wait ("" /* args */, from_tty
, async_exec
);
2689 do_cleanups (old_chain
);
2694 * takes a program previously attached to and detaches it.
2695 * The program resumes execution and will no longer stop
2696 * on signals, etc. We better not have left any breakpoints
2697 * in the program or it'll die when it hits one. For this
2698 * to work, it may be necessary for the process to have been
2699 * previously attached. It *might* work if the program was
2700 * started via the normal ptrace (PTRACE_TRACEME).
2704 detach_command (char *args
, int from_tty
)
2706 dont_repeat (); /* Not for the faint of heart. */
2708 if (ptid_equal (inferior_ptid
, null_ptid
))
2709 error (_("The program is not being run."));
2711 query_if_trace_running (from_tty
);
2713 disconnect_tracing ();
2715 target_detach (args
, from_tty
);
2717 /* If the solist is global across inferiors, don't clear it when we
2718 detach from a single inferior. */
2719 if (!gdbarch_has_global_solist (target_gdbarch ()))
2720 no_shared_libraries (NULL
, from_tty
);
2722 /* If we still have inferiors to debug, then don't mess with their
2724 if (!have_inferiors ())
2725 init_thread_list ();
2727 if (deprecated_detach_hook
)
2728 deprecated_detach_hook ();
2731 /* Disconnect from the current target without resuming it (leaving it
2732 waiting for a debugger).
2734 We'd better not have left any breakpoints in the program or the
2735 next debugger will get confused. Currently only supported for some
2736 remote targets, since the normal attach mechanisms don't work on
2737 stopped processes on some native platforms (e.g. GNU/Linux). */
2740 disconnect_command (char *args
, int from_tty
)
2742 dont_repeat (); /* Not for the faint of heart. */
2743 query_if_trace_running (from_tty
);
2744 disconnect_tracing ();
2745 target_disconnect (args
, from_tty
);
2746 no_shared_libraries (NULL
, from_tty
);
2747 init_thread_list ();
2748 if (deprecated_detach_hook
)
2749 deprecated_detach_hook ();
2753 interrupt_target_1 (int all_threads
)
2758 ptid
= minus_one_ptid
;
2760 ptid
= inferior_ptid
;
2763 /* Tag the thread as having been explicitly requested to stop, so
2764 other parts of gdb know not to resume this thread automatically,
2765 if it was stopped due to an internal event. Limit this to
2766 non-stop mode, as when debugging a multi-threaded application in
2767 all-stop mode, we will only get one stop event --- it's undefined
2768 which thread will report the event. */
2770 set_stop_requested (ptid
, 1);
2773 /* Stop the execution of the target while running in async mode, in
2774 the backgound. In all-stop, stop the whole process. In non-stop
2775 mode, stop the current thread only by default, or stop all threads
2776 if the `-a' switch is used. */
2778 /* interrupt [-a] */
2780 interrupt_target_command (char *args
, int from_tty
)
2782 if (target_can_async_p ())
2784 int all_threads
= 0;
2786 dont_repeat (); /* Not for the faint of heart. */
2789 && strncmp (args
, "-a", sizeof ("-a") - 1) == 0)
2792 if (!non_stop
&& all_threads
)
2793 error (_("-a is meaningless in all-stop mode."));
2795 interrupt_target_1 (all_threads
);
2800 print_float_info (struct ui_file
*file
,
2801 struct frame_info
*frame
, const char *args
)
2803 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
2805 if (gdbarch_print_float_info_p (gdbarch
))
2806 gdbarch_print_float_info (gdbarch
, file
, frame
, args
);
2810 int printed_something
= 0;
2813 regnum
< gdbarch_num_regs (gdbarch
)
2814 + gdbarch_num_pseudo_regs (gdbarch
);
2817 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, float_reggroup
))
2819 printed_something
= 1;
2820 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
2823 if (!printed_something
)
2824 fprintf_filtered (file
, "No floating-point info "
2825 "available for this processor.\n");
2830 float_info (char *args
, int from_tty
)
2832 if (!target_has_registers
)
2833 error (_("The program has no registers now."));
2835 print_float_info (gdb_stdout
, get_selected_frame (NULL
), args
);
2839 unset_command (char *args
, int from_tty
)
2841 printf_filtered (_("\"unset\" must be followed by the "
2842 "name of an unset subcommand.\n"));
2843 help_list (unsetlist
, "unset ", -1, gdb_stdout
);
2846 /* Implement `info proc' family of commands. */
2849 info_proc_cmd_1 (char *args
, enum info_proc_what what
, int from_tty
)
2851 struct gdbarch
*gdbarch
= get_current_arch ();
2853 if (!target_info_proc (args
, what
))
2855 if (gdbarch_info_proc_p (gdbarch
))
2856 gdbarch_info_proc (gdbarch
, args
, what
);
2858 error (_("Not supported on this target."));
2862 /* Implement `info proc' when given without any futher parameters. */
2865 info_proc_cmd (char *args
, int from_tty
)
2867 info_proc_cmd_1 (args
, IP_MINIMAL
, from_tty
);
2870 /* Implement `info proc mappings'. */
2873 info_proc_cmd_mappings (char *args
, int from_tty
)
2875 info_proc_cmd_1 (args
, IP_MAPPINGS
, from_tty
);
2878 /* Implement `info proc stat'. */
2881 info_proc_cmd_stat (char *args
, int from_tty
)
2883 info_proc_cmd_1 (args
, IP_STAT
, from_tty
);
2886 /* Implement `info proc status'. */
2889 info_proc_cmd_status (char *args
, int from_tty
)
2891 info_proc_cmd_1 (args
, IP_STATUS
, from_tty
);
2894 /* Implement `info proc cwd'. */
2897 info_proc_cmd_cwd (char *args
, int from_tty
)
2899 info_proc_cmd_1 (args
, IP_CWD
, from_tty
);
2902 /* Implement `info proc cmdline'. */
2905 info_proc_cmd_cmdline (char *args
, int from_tty
)
2907 info_proc_cmd_1 (args
, IP_CMDLINE
, from_tty
);
2910 /* Implement `info proc exe'. */
2913 info_proc_cmd_exe (char *args
, int from_tty
)
2915 info_proc_cmd_1 (args
, IP_EXE
, from_tty
);
2918 /* Implement `info proc all'. */
2921 info_proc_cmd_all (char *args
, int from_tty
)
2923 info_proc_cmd_1 (args
, IP_ALL
, from_tty
);
2927 _initialize_infcmd (void)
2929 static struct cmd_list_element
*info_proc_cmdlist
;
2930 struct cmd_list_element
*c
= NULL
;
2931 const char *cmd_name
;
2933 /* Add the filename of the terminal connected to inferior I/O. */
2934 add_setshow_filename_cmd ("inferior-tty", class_run
,
2935 &inferior_io_terminal_scratch
, _("\
2936 Set terminal for future runs of program being debugged."), _("\
2937 Show terminal for future runs of program being debugged."), _("\
2938 Usage: set inferior-tty /dev/pts/1"),
2939 set_inferior_tty_command
,
2940 show_inferior_tty_command
,
2941 &setlist
, &showlist
);
2942 add_com_alias ("tty", "set inferior-tty", class_alias
, 0);
2945 add_setshow_string_noescape_cmd (cmd_name
, class_run
,
2946 &inferior_args_scratch
, _("\
2947 Set argument list to give program being debugged when it is started."), _("\
2948 Show argument list to give program being debugged when it is started."), _("\
2949 Follow this command with any number of args, to be passed to the program."),
2952 &setlist
, &showlist
);
2953 c
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
2954 gdb_assert (c
!= NULL
);
2955 set_cmd_completer (c
, filename_completer
);
2957 c
= add_cmd ("environment", no_class
, environment_info
, _("\
2958 The environment to give the program, or one variable's value.\n\
2959 With an argument VAR, prints the value of environment variable VAR to\n\
2960 give the program being debugged. With no arguments, prints the entire\n\
2961 environment to be given to the program."), &showlist
);
2962 set_cmd_completer (c
, noop_completer
);
2964 add_prefix_cmd ("unset", no_class
, unset_command
,
2965 _("Complement to certain \"set\" commands."),
2966 &unsetlist
, "unset ", 0, &cmdlist
);
2968 c
= add_cmd ("environment", class_run
, unset_environment_command
, _("\
2969 Cancel environment variable VAR for the program.\n\
2970 This does not affect the program until the next \"run\" command."),
2972 set_cmd_completer (c
, noop_completer
);
2974 c
= add_cmd ("environment", class_run
, set_environment_command
, _("\
2975 Set environment variable value to give the program.\n\
2976 Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\
2977 VALUES of environment variables are uninterpreted strings.\n\
2978 This does not affect the program until the next \"run\" command."),
2980 set_cmd_completer (c
, noop_completer
);
2982 c
= add_com ("path", class_files
, path_command
, _("\
2983 Add directory DIR(s) to beginning of search path for object files.\n\
2984 $cwd in the path means the current working directory.\n\
2985 This path is equivalent to the $PATH shell variable. It is a list of\n\
2986 directories, separated by colons. These directories are searched to find\n\
2987 fully linked executable files and separately compiled object files as \
2989 set_cmd_completer (c
, filename_completer
);
2991 c
= add_cmd ("paths", no_class
, path_info
, _("\
2992 Current search path for finding 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 \
2999 set_cmd_completer (c
, noop_completer
);
3001 add_prefix_cmd ("kill", class_run
, kill_command
,
3002 _("Kill execution of program being debugged."),
3003 &killlist
, "kill ", 0, &cmdlist
);
3005 add_com ("attach", class_run
, attach_command
, _("\
3006 Attach to a process or file outside of GDB.\n\
3007 This command attaches to another target, of the same type as your last\n\
3008 \"target\" command (\"info files\" will show your target stack).\n\
3009 The command may take as argument a process id or a device file.\n\
3010 For a process id, you must have permission to send the process a signal,\n\
3011 and it must have the same effective uid as the debugger.\n\
3012 When using \"attach\" with a process id, the debugger finds the\n\
3013 program running in the process, looking first in the current working\n\
3014 directory, or (if not found there) using the source file search path\n\
3015 (see the \"directory\" command). You can also use the \"file\" command\n\
3016 to specify the program, and to load its symbol table."));
3018 add_prefix_cmd ("detach", class_run
, detach_command
, _("\
3019 Detach a process or file previously attached.\n\
3020 If a process, it is no longer traced, and it continues its execution. If\n\
3021 you were debugging a file, the file is closed and gdb no longer accesses it."),
3022 &detachlist
, "detach ", 0, &cmdlist
);
3024 add_com ("disconnect", class_run
, disconnect_command
, _("\
3025 Disconnect from a target.\n\
3026 The target will wait for another debugger to connect. Not available for\n\
3029 c
= add_com ("signal", class_run
, signal_command
, _("\
3030 Continue program with the specified signal.\n\
3031 Usage: signal SIGNAL\n\
3032 The SIGNAL argument is processed the same as the handle command.\n\
3034 An argument of \"0\" means continue the program without sending it a signal.\n\
3035 This is useful in cases where the program stopped because of a signal,\n\
3036 and you want to resume the program while discarding the signal."));
3037 set_cmd_completer (c
, signal_completer
);
3039 add_com ("stepi", class_run
, stepi_command
, _("\
3040 Step one instruction exactly.\n\
3042 Argument N means step N times (or till program stops for another \
3044 add_com_alias ("si", "stepi", class_alias
, 0);
3046 add_com ("nexti", class_run
, nexti_command
, _("\
3047 Step one instruction, but proceed through subroutine calls.\n\
3049 Argument N means step N times (or till program stops for another \
3051 add_com_alias ("ni", "nexti", class_alias
, 0);
3053 add_com ("finish", class_run
, finish_command
, _("\
3054 Execute until selected stack frame returns.\n\
3056 Upon return, the value returned is printed and put in the value history."));
3057 add_com_alias ("fin", "finish", class_run
, 1);
3059 add_com ("next", class_run
, next_command
, _("\
3060 Step program, proceeding through subroutine calls.\n\
3062 Unlike \"step\", if the current source line calls a subroutine,\n\
3063 this command does not enter the subroutine, but instead steps over\n\
3064 the call, in effect treating it as a single source line."));
3065 add_com_alias ("n", "next", class_run
, 1);
3067 add_com_alias ("S", "next", class_run
, 1);
3069 add_com ("step", class_run
, step_command
, _("\
3070 Step program until it reaches a different source line.\n\
3072 Argument N means step N times (or till program stops for another \
3074 add_com_alias ("s", "step", class_run
, 1);
3076 c
= add_com ("until", class_run
, until_command
, _("\
3077 Execute until the program reaches a source line greater than the current\n\
3078 or a specified location (same args as break command) within the current \
3080 set_cmd_completer (c
, location_completer
);
3081 add_com_alias ("u", "until", class_run
, 1);
3083 c
= add_com ("advance", class_run
, advance_command
, _("\
3084 Continue the program up to the given location (same form as args for break \
3086 Execution will also stop upon exit from the current stack frame."));
3087 set_cmd_completer (c
, location_completer
);
3089 c
= add_com ("jump", class_run
, jump_command
, _("\
3090 Continue program being debugged at specified line or address.\n\
3091 Usage: jump <location>\n\
3092 Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\
3093 for an address to start at."));
3094 set_cmd_completer (c
, location_completer
);
3095 add_com_alias ("j", "jump", class_run
, 1);
3099 c
= add_com ("go", class_run
, go_command
, _("\
3100 Usage: go <location>\n\
3101 Continue program being debugged, stopping at specified line or \n\
3103 Give as argument either LINENUM or *ADDR, where ADDR is an \n\
3104 expression for an address to start at.\n\
3105 This command is a combination of tbreak and jump."));
3106 set_cmd_completer (c
, location_completer
);
3110 add_com_alias ("g", "go", class_run
, 1);
3112 add_com ("continue", class_run
, continue_command
, _("\
3113 Continue program being debugged, after signal or breakpoint.\n\
3114 Usage: continue [N]\n\
3115 If proceeding from breakpoint, a number N may be used as an argument,\n\
3116 which means to set the ignore count of that breakpoint to N - 1 (so that\n\
3117 the breakpoint won't break until the Nth time it is reached).\n\
3119 If non-stop mode is enabled, continue only the current thread,\n\
3120 otherwise all the threads in the program are continued. To \n\
3121 continue all stopped threads in non-stop mode, use the -a option.\n\
3122 Specifying -a and an ignore count simultaneously is an error."));
3123 add_com_alias ("c", "cont", class_run
, 1);
3124 add_com_alias ("fg", "cont", class_run
, 1);
3126 c
= add_com ("run", class_run
, run_command
, _("\
3127 Start debugged program. You may specify arguments to give it.\n\
3128 Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\
3129 Input and output redirection with \">\", \"<\", or \">>\" are also \
3131 With no arguments, uses arguments last specified (with \"run\" \
3132 or \"set args\").\n\
3133 To cancel previous arguments and run with no arguments,\n\
3134 use \"set args\" without arguments."));
3135 set_cmd_completer (c
, filename_completer
);
3136 add_com_alias ("r", "run", class_run
, 1);
3138 add_com ("R", class_run
, run_no_args_command
,
3139 _("Start debugged program with no arguments."));
3141 c
= add_com ("start", class_run
, start_command
, _("\
3142 Run the debugged program until the beginning of the main procedure.\n\
3143 You may specify arguments to give to your program, just as with the\n\
3144 \"run\" command."));
3145 set_cmd_completer (c
, filename_completer
);
3147 add_com ("interrupt", class_run
, interrupt_target_command
,
3148 _("Interrupt the execution of the debugged program.\n\
3149 If non-stop mode is enabled, interrupt only the current thread,\n\
3150 otherwise all the threads in the program are stopped. To \n\
3151 interrupt all running threads in non-stop mode, use the -a option."));
3153 add_info ("registers", nofp_registers_info
, _("\
3154 List of integer registers and their contents, for selected stack frame.\n\
3155 Register name as argument means describe only that register."));
3156 add_info_alias ("r", "registers", 1);
3159 add_com ("lr", class_info
, nofp_registers_info
, _("\
3160 List of integer registers and their contents, for selected stack frame.\n\
3161 Register name as argument means describe only that register."));
3162 add_info ("all-registers", all_registers_info
, _("\
3163 List of all registers and their contents, for selected stack frame.\n\
3164 Register name as argument means describe only that register."));
3166 add_info ("program", program_info
,
3167 _("Execution status of the program."));
3169 add_info ("float", float_info
,
3170 _("Print the status of the floating point unit\n"));
3172 add_info ("vector", vector_info
,
3173 _("Print the status of the vector unit\n"));
3175 add_prefix_cmd ("proc", class_info
, info_proc_cmd
,
3177 Show /proc process information about any running process.\n\
3178 Specify any process id, or use the program being debugged by default."),
3179 &info_proc_cmdlist
, "info proc ",
3180 1/*allow-unknown*/, &infolist
);
3182 add_cmd ("mappings", class_info
, info_proc_cmd_mappings
, _("\
3183 List of mapped memory regions."),
3184 &info_proc_cmdlist
);
3186 add_cmd ("stat", class_info
, info_proc_cmd_stat
, _("\
3187 List process info from /proc/PID/stat."),
3188 &info_proc_cmdlist
);
3190 add_cmd ("status", class_info
, info_proc_cmd_status
, _("\
3191 List process info from /proc/PID/status."),
3192 &info_proc_cmdlist
);
3194 add_cmd ("cwd", class_info
, info_proc_cmd_cwd
, _("\
3195 List current working directory of the process."),
3196 &info_proc_cmdlist
);
3198 add_cmd ("cmdline", class_info
, info_proc_cmd_cmdline
, _("\
3199 List command line arguments of the process."),
3200 &info_proc_cmdlist
);
3202 add_cmd ("exe", class_info
, info_proc_cmd_exe
, _("\
3203 List absolute filename for executable of the process."),
3204 &info_proc_cmdlist
);
3206 add_cmd ("all", class_info
, info_proc_cmd_all
, _("\
3207 List all available /proc info."),
3208 &info_proc_cmdlist
);