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 /* If we have no line info, switch to stepi mode. */
1050 if (tp
->control
.step_range_end
== 0 && step_stop_if_no_debug
)
1051 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1052 else if (tp
->control
.step_range_end
== 0)
1056 if (find_pc_partial_function (pc
, &name
,
1057 &tp
->control
.step_range_start
,
1058 &tp
->control
.step_range_end
) == 0)
1059 error (_("Cannot find bounds of current function"));
1061 target_terminal_ours ();
1062 printf_filtered (_("Single stepping until exit from function %s,"
1063 "\nwhich has no line number information.\n"),
1069 /* Say we are stepping, but stop after one insn whatever it does. */
1070 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1071 if (!skip_subroutines
)
1073 Don't step over function calls, not even to functions lacking
1075 tp
->control
.step_over_calls
= STEP_OVER_NONE
;
1078 if (skip_subroutines
)
1079 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1081 tp
->step_multi
= (count
> 1);
1082 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 1);
1084 /* For async targets, register a continuation to do any
1085 additional steps. For sync targets, the caller will handle
1086 further stepping. */
1087 if (target_can_async_p ())
1089 struct step_1_continuation_args
*args
;
1091 args
= xmalloc (sizeof (*args
));
1092 args
->skip_subroutines
= skip_subroutines
;
1093 args
->single_inst
= single_inst
;
1094 args
->count
= count
;
1095 args
->thread
= thread
;
1097 add_intermediate_continuation (tp
, step_1_continuation
, args
, xfree
);
1103 /* Continue program at specified address. */
1106 jump_command (char *arg
, int from_tty
)
1108 struct gdbarch
*gdbarch
= get_current_arch ();
1110 struct symtabs_and_lines sals
;
1111 struct symtab_and_line sal
;
1117 ensure_not_tfind_mode ();
1118 ensure_valid_thread ();
1119 ensure_not_running ();
1121 /* Find out whether we must run in the background. */
1123 async_exec
= strip_bg_char (&arg
);
1125 /* If we must run in the background, but the target can't do it,
1127 if (async_exec
&& !target_can_async_p ())
1128 error (_("Asynchronous execution not supported on this target."));
1131 error_no_arg (_("starting address"));
1133 sals
= decode_line_with_last_displayed (arg
, DECODE_LINE_FUNFIRSTLINE
);
1134 if (sals
.nelts
!= 1)
1136 error (_("Unreasonable jump request"));
1142 if (sal
.symtab
== 0 && sal
.pc
== 0)
1143 error (_("No source file has been specified."));
1145 resolve_sal_pc (&sal
); /* May error out. */
1147 /* See if we are trying to jump to another function. */
1148 fn
= get_frame_function (get_current_frame ());
1149 sfn
= find_pc_function (sal
.pc
);
1150 if (fn
!= NULL
&& sfn
!= fn
)
1152 if (!query (_("Line %d is not in `%s'. Jump anyway? "), sal
.line
,
1153 SYMBOL_PRINT_NAME (fn
)))
1155 error (_("Not confirmed."));
1162 fixup_symbol_section (sfn
, 0);
1163 if (section_is_overlay (SYMBOL_OBJ_SECTION (SYMBOL_OBJFILE (sfn
), sfn
)) &&
1164 !section_is_mapped (SYMBOL_OBJ_SECTION (SYMBOL_OBJFILE (sfn
), sfn
)))
1166 if (!query (_("WARNING!!! Destination is in "
1167 "unmapped overlay! Jump anyway? ")))
1169 error (_("Not confirmed."));
1179 printf_filtered (_("Continuing at "));
1180 fputs_filtered (paddress (gdbarch
, addr
), gdb_stdout
);
1181 printf_filtered (".\n");
1184 /* If we are not asked to run in the bg, then prepare to run in the
1185 foreground, synchronously. */
1186 if (!async_exec
&& target_can_async_p ())
1188 /* Simulate synchronous execution. */
1189 async_disable_stdin ();
1192 clear_proceed_status ();
1193 proceed (addr
, GDB_SIGNAL_0
, 0);
1197 /* Go to line or address in current procedure. */
1199 go_command (char *line_no
, int from_tty
)
1201 if (line_no
== (char *) NULL
|| !*line_no
)
1202 printf_filtered (_("Usage: go <location>\n"));
1205 tbreak_command (line_no
, from_tty
);
1206 jump_command (line_no
, from_tty
);
1211 /* Continue program giving it specified signal. */
1214 signal_command (char *signum_exp
, int from_tty
)
1216 enum gdb_signal oursig
;
1219 dont_repeat (); /* Too dangerous. */
1221 ensure_not_tfind_mode ();
1222 ensure_valid_thread ();
1223 ensure_not_running ();
1225 /* Find out whether we must run in the background. */
1226 if (signum_exp
!= NULL
)
1227 async_exec
= strip_bg_char (&signum_exp
);
1229 /* If we must run in the background, but the target can't do it,
1231 if (async_exec
&& !target_can_async_p ())
1232 error (_("Asynchronous execution not supported on this target."));
1234 /* If we are not asked to run in the bg, then prepare to run in the
1235 foreground, synchronously. */
1236 if (!async_exec
&& target_can_async_p ())
1238 /* Simulate synchronous execution. */
1239 async_disable_stdin ();
1243 error_no_arg (_("signal number"));
1245 /* It would be even slicker to make signal names be valid expressions,
1246 (the type could be "enum $signal" or some such), then the user could
1247 assign them to convenience variables. */
1248 oursig
= gdb_signal_from_name (signum_exp
);
1250 if (oursig
== GDB_SIGNAL_UNKNOWN
)
1252 /* No, try numeric. */
1253 int num
= parse_and_eval_long (signum_exp
);
1256 oursig
= GDB_SIGNAL_0
;
1258 oursig
= gdb_signal_from_command (num
);
1263 if (oursig
== GDB_SIGNAL_0
)
1264 printf_filtered (_("Continuing with no signal.\n"));
1266 printf_filtered (_("Continuing with signal %s.\n"),
1267 gdb_signal_to_name (oursig
));
1270 clear_proceed_status ();
1271 proceed ((CORE_ADDR
) -1, oursig
, 0);
1274 /* Continuation args to be passed to the "until" command
1276 struct until_next_continuation_args
1278 /* The thread that was current when the command was executed. */
1282 /* A continuation callback for until_next_command. */
1285 until_next_continuation (void *arg
, int err
)
1287 struct until_next_continuation_args
*a
= arg
;
1289 delete_longjmp_breakpoint (a
->thread
);
1292 /* Proceed until we reach a different source line with pc greater than
1293 our current one or exit the function. We skip calls in both cases.
1295 Note that eventually this command should probably be changed so
1296 that only source lines are printed out when we hit the breakpoint
1297 we set. This may involve changes to wait_for_inferior and the
1298 proceed status code. */
1301 until_next_command (int from_tty
)
1303 struct frame_info
*frame
;
1305 struct symbol
*func
;
1306 struct symtab_and_line sal
;
1307 struct thread_info
*tp
= inferior_thread ();
1308 int thread
= tp
->num
;
1309 struct cleanup
*old_chain
;
1311 clear_proceed_status ();
1314 frame
= get_current_frame ();
1316 /* Step until either exited from this function or greater
1317 than the current line (if in symbolic section) or pc (if
1320 pc
= get_frame_pc (frame
);
1321 func
= find_pc_function (pc
);
1325 struct bound_minimal_symbol msymbol
= lookup_minimal_symbol_by_pc (pc
);
1327 if (msymbol
.minsym
== NULL
)
1328 error (_("Execution is not within a known function."));
1330 tp
->control
.step_range_start
= SYMBOL_VALUE_ADDRESS (msymbol
.minsym
);
1331 tp
->control
.step_range_end
= pc
;
1335 sal
= find_pc_line (pc
, 0);
1337 tp
->control
.step_range_start
= BLOCK_START (SYMBOL_BLOCK_VALUE (func
));
1338 tp
->control
.step_range_end
= sal
.end
;
1341 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1343 tp
->step_multi
= 0; /* Only one call to proceed */
1345 set_longjmp_breakpoint (tp
, get_frame_id (frame
));
1346 old_chain
= make_cleanup (delete_longjmp_breakpoint_cleanup
, &thread
);
1348 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 1);
1350 if (target_can_async_p () && is_running (inferior_ptid
))
1352 struct until_next_continuation_args
*cont_args
;
1354 discard_cleanups (old_chain
);
1355 cont_args
= XNEW (struct until_next_continuation_args
);
1356 cont_args
->thread
= inferior_thread ()->num
;
1358 add_continuation (tp
, until_next_continuation
, cont_args
, xfree
);
1361 do_cleanups (old_chain
);
1365 until_command (char *arg
, int from_tty
)
1370 ensure_not_tfind_mode ();
1371 ensure_valid_thread ();
1372 ensure_not_running ();
1374 /* Find out whether we must run in the background. */
1376 async_exec
= strip_bg_char (&arg
);
1378 /* If we must run in the background, but the target can't do it,
1380 if (async_exec
&& !target_can_async_p ())
1381 error (_("Asynchronous execution not supported on this target."));
1383 /* If we are not asked to run in the bg, then prepare to run in the
1384 foreground, synchronously. */
1385 if (!async_exec
&& target_can_async_p ())
1387 /* Simulate synchronous execution. */
1388 async_disable_stdin ();
1392 until_break_command (arg
, from_tty
, 0);
1394 until_next_command (from_tty
);
1398 advance_command (char *arg
, int from_tty
)
1403 ensure_not_tfind_mode ();
1404 ensure_valid_thread ();
1405 ensure_not_running ();
1408 error_no_arg (_("a location"));
1410 /* Find out whether we must run in the background. */
1412 async_exec
= strip_bg_char (&arg
);
1414 /* If we must run in the background, but the target can't do it,
1416 if (async_exec
&& !target_can_async_p ())
1417 error (_("Asynchronous execution not supported on this target."));
1419 /* If we are not asked to run in the bg, then prepare to run in the
1420 foreground, synchronously. */
1421 if (!async_exec
&& target_can_async_p ())
1423 /* Simulate synchronous execution. */
1424 async_disable_stdin ();
1427 until_break_command (arg
, from_tty
, 1);
1430 /* Return the value of the result of a function at the end of a 'finish'
1434 get_return_value (struct value
*function
, struct type
*value_type
)
1436 struct regcache
*stop_regs
= stop_registers
;
1437 struct gdbarch
*gdbarch
;
1438 struct value
*value
;
1439 struct cleanup
*cleanup
= make_cleanup (null_cleanup
, NULL
);
1441 /* If stop_registers were not saved, use the current registers. */
1444 stop_regs
= regcache_dup (get_current_regcache ());
1445 make_cleanup_regcache_xfree (stop_regs
);
1448 gdbarch
= get_regcache_arch (stop_regs
);
1450 CHECK_TYPEDEF (value_type
);
1451 gdb_assert (TYPE_CODE (value_type
) != TYPE_CODE_VOID
);
1453 /* FIXME: 2003-09-27: When returning from a nested inferior function
1454 call, it's possible (with no help from the architecture vector)
1455 to locate and return/print a "struct return" value. This is just
1456 a more complicated case of what is already being done in the
1457 inferior function call code. In fact, when inferior function
1458 calls are made async, this will likely be made the norm. */
1460 switch (gdbarch_return_value (gdbarch
, function
, value_type
,
1463 case RETURN_VALUE_REGISTER_CONVENTION
:
1464 case RETURN_VALUE_ABI_RETURNS_ADDRESS
:
1465 case RETURN_VALUE_ABI_PRESERVES_ADDRESS
:
1466 value
= allocate_value (value_type
);
1467 gdbarch_return_value (gdbarch
, function
, value_type
, stop_regs
,
1468 value_contents_raw (value
), NULL
);
1470 case RETURN_VALUE_STRUCT_CONVENTION
:
1474 internal_error (__FILE__
, __LINE__
, _("bad switch"));
1477 do_cleanups (cleanup
);
1482 /* Print the result of a function at the end of a 'finish' command. */
1485 print_return_value (struct value
*function
, struct type
*value_type
)
1487 struct value
*value
= get_return_value (function
, value_type
);
1488 struct ui_out
*uiout
= current_uiout
;
1492 struct value_print_options opts
;
1493 struct ui_file
*stb
;
1494 struct cleanup
*old_chain
;
1497 stb
= mem_fileopen ();
1498 old_chain
= make_cleanup_ui_file_delete (stb
);
1499 ui_out_text (uiout
, "Value returned is ");
1500 ui_out_field_fmt (uiout
, "gdb-result-var", "$%d",
1501 record_latest_value (value
));
1502 ui_out_text (uiout
, " = ");
1503 get_raw_print_options (&opts
);
1504 value_print (value
, stb
, &opts
);
1505 ui_out_field_stream (uiout
, "return-value", stb
);
1506 ui_out_text (uiout
, "\n");
1507 do_cleanups (old_chain
);
1511 ui_out_text (uiout
, "Value returned has type: ");
1512 ui_out_field_string (uiout
, "return-type", TYPE_NAME (value_type
));
1513 ui_out_text (uiout
, ".");
1514 ui_out_text (uiout
, " Cannot determine contents\n");
1518 /* Stuff that needs to be done by the finish command after the target
1519 has stopped. In asynchronous mode, we wait for the target to stop
1520 in the call to poll or select in the event loop, so it is
1521 impossible to do all the stuff as part of the finish_command
1522 function itself. The only chance we have to complete this command
1523 is in fetch_inferior_event, which is called by the event loop as
1524 soon as it detects that the target has stopped. */
1526 struct finish_command_continuation_args
1528 /* The thread that as current when the command was executed. */
1530 struct breakpoint
*breakpoint
;
1531 struct symbol
*function
;
1535 finish_command_continuation (void *arg
, int err
)
1537 struct finish_command_continuation_args
*a
= arg
;
1541 struct thread_info
*tp
= NULL
;
1544 if (!ptid_equal (inferior_ptid
, null_ptid
)
1545 && target_has_execution
1546 && is_stopped (inferior_ptid
))
1548 tp
= inferior_thread ();
1549 bs
= tp
->control
.stop_bpstat
;
1552 if (bpstat_find_breakpoint (bs
, a
->breakpoint
) != NULL
1553 && a
->function
!= NULL
)
1555 struct type
*value_type
;
1557 value_type
= TYPE_TARGET_TYPE (SYMBOL_TYPE (a
->function
));
1559 internal_error (__FILE__
, __LINE__
,
1560 _("finish_command: function has no target type"));
1562 if (TYPE_CODE (value_type
) != TYPE_CODE_VOID
)
1564 volatile struct gdb_exception ex
;
1567 func
= read_var_value (a
->function
, get_current_frame ());
1568 TRY_CATCH (ex
, RETURN_MASK_ALL
)
1570 /* print_return_value can throw an exception in some
1571 circumstances. We need to catch this so that we still
1572 delete the breakpoint. */
1573 print_return_value (func
, value_type
);
1576 exception_print (gdb_stdout
, ex
);
1580 /* We suppress normal call of normal_stop observer and do it
1581 here so that the *stopped notification includes the return
1583 if (bs
!= NULL
&& tp
->control
.proceed_to_finish
)
1584 observer_notify_normal_stop (bs
, 1 /* print frame */);
1587 delete_breakpoint (a
->breakpoint
);
1588 delete_longjmp_breakpoint (a
->thread
);
1592 finish_command_continuation_free_arg (void *arg
)
1597 /* finish_backward -- helper function for finish_command. */
1600 finish_backward (struct symbol
*function
)
1602 struct symtab_and_line sal
;
1603 struct thread_info
*tp
= inferior_thread ();
1605 CORE_ADDR func_addr
;
1607 pc
= get_frame_pc (get_current_frame ());
1609 if (find_pc_partial_function (pc
, NULL
, &func_addr
, NULL
) == 0)
1610 internal_error (__FILE__
, __LINE__
,
1611 _("Finish: couldn't find function."));
1613 sal
= find_pc_line (func_addr
, 0);
1615 tp
->control
.proceed_to_finish
= 1;
1616 /* Special case: if we're sitting at the function entry point,
1617 then all we need to do is take a reverse singlestep. We
1618 don't need to set a breakpoint, and indeed it would do us
1621 Note that this can only happen at frame #0, since there's
1622 no way that a function up the stack can have a return address
1623 that's equal to its entry point. */
1627 struct frame_info
*frame
= get_selected_frame (NULL
);
1628 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
1629 struct symtab_and_line sr_sal
;
1631 /* Set a step-resume at the function's entry point. Once that's
1632 hit, we'll do one more step backwards. */
1635 sr_sal
.pspace
= get_frame_program_space (frame
);
1636 insert_step_resume_breakpoint_at_sal (gdbarch
,
1637 sr_sal
, null_frame_id
);
1639 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
1643 /* We're almost there -- we just need to back up by one more
1645 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1646 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 1);
1650 /* finish_forward -- helper function for finish_command. */
1653 finish_forward (struct symbol
*function
, struct frame_info
*frame
)
1655 struct frame_id frame_id
= get_frame_id (frame
);
1656 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
1657 struct symtab_and_line sal
;
1658 struct thread_info
*tp
= inferior_thread ();
1659 struct breakpoint
*breakpoint
;
1660 struct cleanup
*old_chain
;
1661 struct finish_command_continuation_args
*cargs
;
1662 int thread
= tp
->num
;
1664 sal
= find_pc_line (get_frame_pc (frame
), 0);
1665 sal
.pc
= get_frame_pc (frame
);
1667 breakpoint
= set_momentary_breakpoint (gdbarch
, sal
,
1668 get_stack_frame_id (frame
),
1671 /* set_momentary_breakpoint invalidates FRAME. */
1674 old_chain
= make_cleanup_delete_breakpoint (breakpoint
);
1676 set_longjmp_breakpoint (tp
, frame_id
);
1677 make_cleanup (delete_longjmp_breakpoint_cleanup
, &thread
);
1679 /* We want stop_registers, please... */
1680 tp
->control
.proceed_to_finish
= 1;
1681 cargs
= xmalloc (sizeof (*cargs
));
1683 cargs
->thread
= thread
;
1684 cargs
->breakpoint
= breakpoint
;
1685 cargs
->function
= function
;
1686 add_continuation (tp
, finish_command_continuation
, cargs
,
1687 finish_command_continuation_free_arg
);
1688 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
1690 discard_cleanups (old_chain
);
1691 if (!target_can_async_p ())
1692 do_all_continuations (0);
1695 /* "finish": Set a temporary breakpoint at the place the selected
1696 frame will return to, then continue. */
1699 finish_command (char *arg
, int from_tty
)
1701 struct frame_info
*frame
;
1702 struct symbol
*function
;
1707 ensure_not_tfind_mode ();
1708 ensure_valid_thread ();
1709 ensure_not_running ();
1711 /* Find out whether we must run in the background. */
1713 async_exec
= strip_bg_char (&arg
);
1715 /* If we must run in the background, but the target can't do it,
1717 if (async_exec
&& !target_can_async_p ())
1718 error (_("Asynchronous execution not supported on this target."));
1720 /* If we are not asked to run in the bg, then prepare to run in the
1721 foreground, synchronously. */
1722 if (!async_exec
&& target_can_async_p ())
1724 /* Simulate synchronous execution. */
1725 async_disable_stdin ();
1729 error (_("The \"finish\" command does not take any arguments."));
1731 frame
= get_prev_frame (get_selected_frame (_("No selected frame.")));
1733 error (_("\"finish\" not meaningful in the outermost frame."));
1735 clear_proceed_status ();
1737 /* Finishing from an inline frame is completely different. We don't
1738 try to show the "return value" - no way to locate it. So we do
1739 not need a completion. */
1740 if (get_frame_type (get_selected_frame (_("No selected frame.")))
1743 /* Claim we are stepping in the calling frame. An empty step
1744 range means that we will stop once we aren't in a function
1745 called by that frame. We don't use the magic "1" value for
1746 step_range_end, because then infrun will think this is nexti,
1747 and not step over the rest of this inlined function call. */
1748 struct thread_info
*tp
= inferior_thread ();
1749 struct symtab_and_line empty_sal
;
1751 init_sal (&empty_sal
);
1752 set_step_info (frame
, empty_sal
);
1753 tp
->control
.step_range_start
= get_frame_pc (frame
);
1754 tp
->control
.step_range_end
= tp
->control
.step_range_start
;
1755 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1757 /* Print info on the selected frame, including level number but not
1761 printf_filtered (_("Run till exit from "));
1762 print_stack_frame (get_selected_frame (NULL
), 1, LOCATION
);
1765 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 1);
1769 /* Ignore TAILCALL_FRAME type frames, they were executed already before
1770 entering THISFRAME. */
1771 while (get_frame_type (frame
) == TAILCALL_FRAME
)
1772 frame
= get_prev_frame (frame
);
1774 /* Find the function we will return from. */
1776 function
= find_pc_function (get_frame_pc (get_selected_frame (NULL
)));
1778 /* Print info on the selected frame, including level number but not
1782 if (execution_direction
== EXEC_REVERSE
)
1783 printf_filtered (_("Run back to call of "));
1785 printf_filtered (_("Run till exit from "));
1787 print_stack_frame (get_selected_frame (NULL
), 1, LOCATION
);
1790 if (execution_direction
== EXEC_REVERSE
)
1791 finish_backward (function
);
1793 finish_forward (function
, frame
);
1798 program_info (char *args
, int from_tty
)
1802 struct thread_info
*tp
;
1805 if (!target_has_execution
)
1807 printf_filtered (_("The program being debugged is not being run.\n"));
1812 ptid
= inferior_ptid
;
1815 struct target_waitstatus ws
;
1817 get_last_target_status (&ptid
, &ws
);
1820 if (ptid_equal (ptid
, null_ptid
) || is_exited (ptid
))
1821 error (_("Invalid selected thread."));
1822 else if (is_running (ptid
))
1823 error (_("Selected thread is running."));
1825 tp
= find_thread_ptid (ptid
);
1826 bs
= tp
->control
.stop_bpstat
;
1827 stat
= bpstat_num (&bs
, &num
);
1829 target_files_info ();
1830 printf_filtered (_("Program stopped at %s.\n"),
1831 paddress (target_gdbarch (), stop_pc
));
1832 if (tp
->control
.stop_step
)
1833 printf_filtered (_("It stopped after being stepped.\n"));
1836 /* There may be several breakpoints in the same place, so this
1837 isn't as strange as it seems. */
1842 printf_filtered (_("It stopped at a breakpoint "
1843 "that has since been deleted.\n"));
1846 printf_filtered (_("It stopped at breakpoint %d.\n"), num
);
1847 stat
= bpstat_num (&bs
, &num
);
1850 else if (tp
->suspend
.stop_signal
!= GDB_SIGNAL_0
)
1852 printf_filtered (_("It stopped with signal %s, %s.\n"),
1853 gdb_signal_to_name (tp
->suspend
.stop_signal
),
1854 gdb_signal_to_string (tp
->suspend
.stop_signal
));
1859 printf_filtered (_("Type \"info stack\" or \"info "
1860 "registers\" for more information.\n"));
1865 environment_info (char *var
, int from_tty
)
1869 char *val
= get_in_environ (current_inferior ()->environment
, var
);
1873 puts_filtered (var
);
1874 puts_filtered (" = ");
1875 puts_filtered (val
);
1876 puts_filtered ("\n");
1880 puts_filtered ("Environment variable \"");
1881 puts_filtered (var
);
1882 puts_filtered ("\" not defined.\n");
1887 char **vector
= environ_vector (current_inferior ()->environment
);
1891 puts_filtered (*vector
++);
1892 puts_filtered ("\n");
1898 set_environment_command (char *arg
, int from_tty
)
1900 char *p
, *val
, *var
;
1904 error_no_arg (_("environment variable and value"));
1906 /* Find seperation between variable name and value. */
1907 p
= (char *) strchr (arg
, '=');
1908 val
= (char *) strchr (arg
, ' ');
1910 if (p
!= 0 && val
!= 0)
1912 /* We have both a space and an equals. If the space is before the
1913 equals, walk forward over the spaces til we see a nonspace
1914 (possibly the equals). */
1919 /* Now if the = is after the char following the spaces,
1920 take the char following the spaces. */
1924 else if (val
!= 0 && p
== 0)
1928 error_no_arg (_("environment variable to set"));
1930 if (p
== 0 || p
[1] == 0)
1934 p
= arg
+ strlen (arg
); /* So that savestring below will work. */
1938 /* Not setting variable value to null. */
1940 while (*val
== ' ' || *val
== '\t')
1944 while (p
!= arg
&& (p
[-1] == ' ' || p
[-1] == '\t'))
1947 var
= savestring (arg
, p
- arg
);
1950 printf_filtered (_("Setting environment variable "
1951 "\"%s\" to null value.\n"),
1953 set_in_environ (current_inferior ()->environment
, var
, "");
1956 set_in_environ (current_inferior ()->environment
, var
, val
);
1961 unset_environment_command (char *var
, int from_tty
)
1965 /* If there is no argument, delete all environment variables.
1966 Ask for confirmation if reading from the terminal. */
1967 if (!from_tty
|| query (_("Delete all environment variables? ")))
1969 free_environ (current_inferior ()->environment
);
1970 current_inferior ()->environment
= make_environ ();
1974 unset_in_environ (current_inferior ()->environment
, var
);
1977 /* Handle the execution path (PATH variable). */
1979 static const char path_var_name
[] = "PATH";
1982 path_info (char *args
, int from_tty
)
1984 puts_filtered ("Executable and object file path: ");
1985 puts_filtered (get_in_environ (current_inferior ()->environment
,
1987 puts_filtered ("\n");
1990 /* Add zero or more directories to the front of the execution path. */
1993 path_command (char *dirname
, int from_tty
)
1999 env
= get_in_environ (current_inferior ()->environment
, path_var_name
);
2000 /* Can be null if path is not set. */
2003 exec_path
= xstrdup (env
);
2004 mod_path (dirname
, &exec_path
);
2005 set_in_environ (current_inferior ()->environment
, path_var_name
, exec_path
);
2008 path_info ((char *) NULL
, from_tty
);
2012 /* Print out the register NAME with value VAL, to FILE, in the default
2016 default_print_one_register_info (struct ui_file
*file
,
2020 struct type
*regtype
= value_type (val
);
2022 fputs_filtered (name
, file
);
2023 print_spaces_filtered (15 - strlen (name
), file
);
2025 if (!value_entirely_available (val
))
2027 fprintf_filtered (file
, "*value not available*\n");
2031 /* If virtual format is floating, print it that way, and in raw
2033 if (TYPE_CODE (regtype
) == TYPE_CODE_FLT
2034 || TYPE_CODE (regtype
) == TYPE_CODE_DECFLOAT
)
2037 struct value_print_options opts
;
2038 const gdb_byte
*valaddr
= value_contents_for_printing (val
);
2039 enum bfd_endian byte_order
= gdbarch_byte_order (get_type_arch (regtype
));
2041 get_user_print_options (&opts
);
2045 value_contents_for_printing (val
),
2046 value_embedded_offset (val
), 0,
2047 file
, 0, val
, &opts
, current_language
);
2049 fprintf_filtered (file
, "\t(raw 0x");
2050 for (j
= 0; j
< TYPE_LENGTH (regtype
); j
++)
2054 if (byte_order
== BFD_ENDIAN_BIG
)
2057 idx
= TYPE_LENGTH (regtype
) - 1 - j
;
2058 fprintf_filtered (file
, "%02x", (unsigned char) valaddr
[idx
]);
2060 fprintf_filtered (file
, ")");
2064 struct value_print_options opts
;
2066 /* Print the register in hex. */
2067 get_formatted_print_options (&opts
, 'x');
2070 value_contents_for_printing (val
),
2071 value_embedded_offset (val
), 0,
2072 file
, 0, val
, &opts
, current_language
);
2073 /* If not a vector register, print it also according to its
2075 if (TYPE_VECTOR (regtype
) == 0)
2077 get_user_print_options (&opts
);
2079 fprintf_filtered (file
, "\t");
2081 value_contents_for_printing (val
),
2082 value_embedded_offset (val
), 0,
2083 file
, 0, val
, &opts
, current_language
);
2087 fprintf_filtered (file
, "\n");
2090 /* Print out the machine register regnum. If regnum is -1, print all
2091 registers (print_all == 1) or all non-float and non-vector
2092 registers (print_all == 0).
2094 For most machines, having all_registers_info() print the
2095 register(s) one per line is good enough. If a different format is
2096 required, (eg, for MIPS or Pyramid 90x, which both have lots of
2097 regs), or there is an existing convention for showing all the
2098 registers, define the architecture method PRINT_REGISTERS_INFO to
2099 provide that format. */
2102 default_print_registers_info (struct gdbarch
*gdbarch
,
2103 struct ui_file
*file
,
2104 struct frame_info
*frame
,
2105 int regnum
, int print_all
)
2108 const int numregs
= gdbarch_num_regs (gdbarch
)
2109 + gdbarch_num_pseudo_regs (gdbarch
);
2111 for (i
= 0; i
< numregs
; i
++)
2113 struct type
*regtype
;
2116 /* Decide between printing all regs, non-float / vector regs, or
2122 if (!gdbarch_register_reggroup_p (gdbarch
, i
, all_reggroup
))
2127 if (!gdbarch_register_reggroup_p (gdbarch
, i
, general_reggroup
))
2137 /* If the register name is empty, it is undefined for this
2138 processor, so don't display anything. */
2139 if (gdbarch_register_name (gdbarch
, i
) == NULL
2140 || *(gdbarch_register_name (gdbarch
, i
)) == '\0')
2143 regtype
= register_type (gdbarch
, i
);
2144 val
= allocate_value (regtype
);
2146 /* Get the data in raw format. */
2147 if (! deprecated_frame_register_read (frame
, i
, value_contents_raw (val
)))
2148 mark_value_bytes_unavailable (val
, 0, TYPE_LENGTH (value_type (val
)));
2150 default_print_one_register_info (file
,
2151 gdbarch_register_name (gdbarch
, i
),
2157 registers_info (char *addr_exp
, int fpregs
)
2159 struct frame_info
*frame
;
2160 struct gdbarch
*gdbarch
;
2162 if (!target_has_registers
)
2163 error (_("The program has no registers now."));
2164 frame
= get_selected_frame (NULL
);
2165 gdbarch
= get_frame_arch (frame
);
2169 gdbarch_print_registers_info (gdbarch
, gdb_stdout
,
2174 while (*addr_exp
!= '\0')
2179 /* Skip leading white space. */
2180 addr_exp
= skip_spaces (addr_exp
);
2182 /* Discard any leading ``$''. Check that there is something
2183 resembling a register following it. */
2184 if (addr_exp
[0] == '$')
2186 if (isspace ((*addr_exp
)) || (*addr_exp
) == '\0')
2187 error (_("Missing register name"));
2189 /* Find the start/end of this register name/num/group. */
2191 while ((*addr_exp
) != '\0' && !isspace ((*addr_exp
)))
2195 /* Figure out what we've found and display it. */
2197 /* A register name? */
2199 int regnum
= user_reg_map_name_to_regnum (gdbarch
, start
, end
- start
);
2203 /* User registers lie completely outside of the range of
2204 normal registers. Catch them early so that the target
2206 if (regnum
>= gdbarch_num_regs (gdbarch
)
2207 + gdbarch_num_pseudo_regs (gdbarch
))
2209 struct value
*regval
= value_of_user_reg (regnum
, frame
);
2210 const char *regname
= user_reg_map_regnum_to_name (gdbarch
,
2213 /* Print in the same fashion
2214 gdbarch_print_registers_info's default
2215 implementation prints. */
2216 default_print_one_register_info (gdb_stdout
,
2221 gdbarch_print_registers_info (gdbarch
, gdb_stdout
,
2222 frame
, regnum
, fpregs
);
2227 /* A register group? */
2229 struct reggroup
*group
;
2231 for (group
= reggroup_next (gdbarch
, NULL
);
2233 group
= reggroup_next (gdbarch
, group
))
2235 /* Don't bother with a length check. Should the user
2236 enter a short register group name, go with the first
2237 group that matches. */
2238 if (strncmp (start
, reggroup_name (group
), end
- start
) == 0)
2246 regnum
< gdbarch_num_regs (gdbarch
)
2247 + gdbarch_num_pseudo_regs (gdbarch
);
2250 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, group
))
2251 gdbarch_print_registers_info (gdbarch
,
2259 /* Nothing matched. */
2260 error (_("Invalid register `%.*s'"), (int) (end
- start
), start
);
2265 all_registers_info (char *addr_exp
, int from_tty
)
2267 registers_info (addr_exp
, 1);
2271 nofp_registers_info (char *addr_exp
, int from_tty
)
2273 registers_info (addr_exp
, 0);
2277 print_vector_info (struct ui_file
*file
,
2278 struct frame_info
*frame
, const char *args
)
2280 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
2282 if (gdbarch_print_vector_info_p (gdbarch
))
2283 gdbarch_print_vector_info (gdbarch
, file
, frame
, args
);
2287 int printed_something
= 0;
2290 regnum
< gdbarch_num_regs (gdbarch
)
2291 + gdbarch_num_pseudo_regs (gdbarch
);
2294 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, vector_reggroup
))
2296 printed_something
= 1;
2297 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
2300 if (!printed_something
)
2301 fprintf_filtered (file
, "No vector information\n");
2306 vector_info (char *args
, int from_tty
)
2308 if (!target_has_registers
)
2309 error (_("The program has no registers now."));
2311 print_vector_info (gdb_stdout
, get_selected_frame (NULL
), args
);
2314 /* Kill the inferior process. Make us have no inferior. */
2317 kill_command (char *arg
, int from_tty
)
2319 /* FIXME: This should not really be inferior_ptid (or target_has_execution).
2320 It should be a distinct flag that indicates that a target is active, cuz
2321 some targets don't have processes! */
2323 if (ptid_equal (inferior_ptid
, null_ptid
))
2324 error (_("The program is not being run."));
2325 if (!query (_("Kill the program being debugged? ")))
2326 error (_("Not confirmed."));
2329 /* If we still have other inferiors to debug, then don't mess with
2330 with their threads. */
2331 if (!have_inferiors ())
2333 init_thread_list (); /* Destroy thread info. */
2335 /* Killing off the inferior can leave us with a core file. If
2336 so, print the state we are left in. */
2337 if (target_has_stack
)
2339 printf_filtered (_("In %s,\n"), target_longname
);
2340 print_stack_frame (get_selected_frame (NULL
), 1, SRC_AND_LOC
);
2343 bfd_cache_close_all ();
2346 /* Used in `attach&' command. ARG is a point to an integer
2347 representing a process id. Proceed threads of this process iff
2348 they stopped due to debugger request, and when they did, they
2349 reported a clean stop (GDB_SIGNAL_0). Do not proceed threads
2350 that have been explicitly been told to stop. */
2353 proceed_after_attach_callback (struct thread_info
*thread
,
2356 int pid
= * (int *) arg
;
2358 if (ptid_get_pid (thread
->ptid
) == pid
2359 && !is_exited (thread
->ptid
)
2360 && !is_executing (thread
->ptid
)
2361 && !thread
->stop_requested
2362 && thread
->suspend
.stop_signal
== GDB_SIGNAL_0
)
2364 switch_to_thread (thread
->ptid
);
2365 clear_proceed_status ();
2366 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
2373 proceed_after_attach (int pid
)
2375 /* Don't error out if the current thread is running, because
2376 there may be other stopped threads. */
2377 struct cleanup
*old_chain
;
2379 /* Backup current thread and selected frame. */
2380 old_chain
= make_cleanup_restore_current_thread ();
2382 iterate_over_threads (proceed_after_attach_callback
, &pid
);
2384 /* Restore selected ptid. */
2385 do_cleanups (old_chain
);
2390 * Should save/restore the tty state since it might be that the
2391 * program to be debugged was started on this tty and it wants
2392 * the tty in some state other than what we want. If it's running
2393 * on another terminal or without a terminal, then saving and
2394 * restoring the tty state is a harmless no-op.
2395 * This only needs to be done if we are attaching to a process.
2398 /* attach_command --
2399 takes a program started up outside of gdb and ``attaches'' to it.
2400 This stops it cold in its tracks and allows us to start debugging it.
2401 and wait for the trace-trap that results from attaching. */
2404 attach_command_post_wait (char *args
, int from_tty
, int async_exec
)
2407 char *full_exec_path
= NULL
;
2408 struct inferior
*inferior
;
2410 inferior
= current_inferior ();
2411 inferior
->control
.stop_soon
= NO_STOP_QUIETLY
;
2413 /* If no exec file is yet known, try to determine it from the
2415 exec_file
= (char *) get_exec_file (0);
2418 exec_file
= target_pid_to_exec_file (PIDGET (inferior_ptid
));
2421 /* It's possible we don't have a full path, but rather just a
2422 filename. Some targets, such as HP-UX, don't provide the
2425 Attempt to qualify the filename against the source path.
2426 (If that fails, we'll just fall back on the original
2427 filename. Not much more we can do...) */
2429 if (!source_full_path_of (exec_file
, &full_exec_path
))
2430 full_exec_path
= xstrdup (exec_file
);
2432 exec_file_attach (full_exec_path
, from_tty
);
2433 symbol_file_add_main (full_exec_path
, from_tty
);
2438 reopen_exec_file ();
2442 /* Take any necessary post-attaching actions for this platform. */
2443 target_post_attach (PIDGET (inferior_ptid
));
2445 post_create_inferior (¤t_target
, from_tty
);
2447 /* Install inferior's terminal modes. */
2448 target_terminal_inferior ();
2452 /* The user requested an `attach&', so be sure to leave threads
2453 that didn't get a signal running. */
2455 /* Immediatelly resume all suspended threads of this inferior,
2456 and this inferior only. This should have no effect on
2457 already running threads. If a thread has been stopped with a
2458 signal, leave it be. */
2460 proceed_after_attach (inferior
->pid
);
2463 if (inferior_thread ()->suspend
.stop_signal
== GDB_SIGNAL_0
)
2465 clear_proceed_status ();
2466 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
2472 /* The user requested a plain `attach', so be sure to leave
2473 the inferior stopped. */
2475 if (target_can_async_p ())
2476 async_enable_stdin ();
2478 /* At least the current thread is already stopped. */
2480 /* In all-stop, by definition, all threads have to be already
2481 stopped at this point. In non-stop, however, although the
2482 selected thread is stopped, others may still be executing.
2483 Be sure to explicitly stop all threads of the process. This
2484 should have no effect on already stopped threads. */
2486 target_stop (pid_to_ptid (inferior
->pid
));
2488 /* Tell the user/frontend where we're stopped. */
2490 if (deprecated_attach_hook
)
2491 deprecated_attach_hook ();
2495 struct attach_command_continuation_args
2503 attach_command_continuation (void *args
, int err
)
2505 struct attach_command_continuation_args
*a
= args
;
2510 attach_command_post_wait (a
->args
, a
->from_tty
, a
->async_exec
);
2514 attach_command_continuation_free_args (void *args
)
2516 struct attach_command_continuation_args
*a
= args
;
2523 attach_command (char *args
, int from_tty
)
2526 struct cleanup
*back_to
= make_cleanup (null_cleanup
, NULL
);
2528 dont_repeat (); /* Not for the faint of heart */
2530 if (gdbarch_has_global_solist (target_gdbarch ()))
2531 /* Don't complain if all processes share the same symbol
2534 else if (target_has_execution
)
2536 if (query (_("A program is being debugged already. Kill it? ")))
2539 error (_("Not killed."));
2542 /* Clean up any leftovers from other runs. Some other things from
2543 this function should probably be moved into target_pre_inferior. */
2544 target_pre_inferior (from_tty
);
2546 if (non_stop
&& !target_supports_non_stop ())
2547 error (_("Cannot attach to this target in non-stop mode"));
2551 async_exec
= strip_bg_char (&args
);
2553 /* If we get a request for running in the bg but the target
2554 doesn't support it, error out. */
2555 if (async_exec
&& !target_can_async_p ())
2556 error (_("Asynchronous execution not supported on this target."));
2559 /* If we don't get a request of running in the bg, then we need
2560 to simulate synchronous (fg) execution. */
2561 if (!async_exec
&& target_can_async_p ())
2563 /* Simulate synchronous execution. */
2564 async_disable_stdin ();
2565 make_cleanup ((make_cleanup_ftype
*)async_enable_stdin
, NULL
);
2568 target_attach (args
, from_tty
);
2570 /* Set up the "saved terminal modes" of the inferior
2571 based on what modes we are starting it with. */
2572 target_terminal_init ();
2574 /* Set up execution context to know that we should return from
2575 wait_for_inferior as soon as the target reports a stop. */
2576 init_wait_for_inferior ();
2577 clear_proceed_status ();
2581 /* If we find that the current thread isn't stopped, explicitly
2582 do so now, because we're going to install breakpoints and
2586 /* The user requested an `attach&'; stop just one thread. */
2587 target_stop (inferior_ptid
);
2589 /* The user requested an `attach', so stop all threads of this
2591 target_stop (pid_to_ptid (ptid_get_pid (inferior_ptid
)));
2594 /* Some system don't generate traps when attaching to inferior.
2595 E.g. Mach 3 or GNU hurd. */
2596 if (!target_attach_no_wait
)
2598 struct inferior
*inferior
= current_inferior ();
2600 /* Careful here. See comments in inferior.h. Basically some
2601 OSes don't ignore SIGSTOPs on continue requests anymore. We
2602 need a way for handle_inferior_event to reset the stop_signal
2603 variable after an attach, and this is what
2604 STOP_QUIETLY_NO_SIGSTOP is for. */
2605 inferior
->control
.stop_soon
= STOP_QUIETLY_NO_SIGSTOP
;
2607 if (target_can_async_p ())
2609 /* sync_execution mode. Wait for stop. */
2610 struct attach_command_continuation_args
*a
;
2612 a
= xmalloc (sizeof (*a
));
2613 a
->args
= xstrdup (args
);
2614 a
->from_tty
= from_tty
;
2615 a
->async_exec
= async_exec
;
2616 add_inferior_continuation (attach_command_continuation
, a
,
2617 attach_command_continuation_free_args
);
2618 discard_cleanups (back_to
);
2622 wait_for_inferior ();
2625 attach_command_post_wait (args
, from_tty
, async_exec
);
2626 discard_cleanups (back_to
);
2629 /* We had just found out that the target was already attached to an
2630 inferior. PTID points at a thread of this new inferior, that is
2631 the most likely to be stopped right now, but not necessarily so.
2632 The new inferior is assumed to be already added to the inferior
2633 list at this point. If LEAVE_RUNNING, then leave the threads of
2634 this inferior running, except those we've explicitly seen reported
2638 notice_new_inferior (ptid_t ptid
, int leave_running
, int from_tty
)
2640 struct cleanup
* old_chain
;
2643 old_chain
= make_cleanup (null_cleanup
, NULL
);
2645 /* If in non-stop, leave threads as running as they were. If
2646 they're stopped for some reason other than us telling it to, the
2647 target reports a signal != GDB_SIGNAL_0. We don't try to
2648 resume threads with such a stop signal. */
2649 async_exec
= non_stop
;
2651 if (!ptid_equal (inferior_ptid
, null_ptid
))
2652 make_cleanup_restore_current_thread ();
2654 switch_to_thread (ptid
);
2656 /* When we "notice" a new inferior we need to do all the things we
2657 would normally do if we had just attached to it. */
2659 if (is_executing (inferior_ptid
))
2661 struct inferior
*inferior
= current_inferior ();
2663 /* We're going to install breakpoints, and poke at memory,
2664 ensure that the inferior is stopped for a moment while we do
2666 target_stop (inferior_ptid
);
2668 inferior
->control
.stop_soon
= STOP_QUIETLY_REMOTE
;
2670 /* Wait for stop before proceeding. */
2671 if (target_can_async_p ())
2673 struct attach_command_continuation_args
*a
;
2675 a
= xmalloc (sizeof (*a
));
2676 a
->args
= xstrdup ("");
2677 a
->from_tty
= from_tty
;
2678 a
->async_exec
= async_exec
;
2679 add_inferior_continuation (attach_command_continuation
, a
,
2680 attach_command_continuation_free_args
);
2682 do_cleanups (old_chain
);
2686 wait_for_inferior ();
2689 async_exec
= leave_running
;
2690 attach_command_post_wait ("" /* args */, from_tty
, async_exec
);
2692 do_cleanups (old_chain
);
2697 * takes a program previously attached to and detaches it.
2698 * The program resumes execution and will no longer stop
2699 * on signals, etc. We better not have left any breakpoints
2700 * in the program or it'll die when it hits one. For this
2701 * to work, it may be necessary for the process to have been
2702 * previously attached. It *might* work if the program was
2703 * started via the normal ptrace (PTRACE_TRACEME).
2707 detach_command (char *args
, int from_tty
)
2709 dont_repeat (); /* Not for the faint of heart. */
2711 if (ptid_equal (inferior_ptid
, null_ptid
))
2712 error (_("The program is not being run."));
2714 query_if_trace_running (from_tty
);
2716 disconnect_tracing ();
2718 target_detach (args
, from_tty
);
2720 /* If the solist is global across inferiors, don't clear it when we
2721 detach from a single inferior. */
2722 if (!gdbarch_has_global_solist (target_gdbarch ()))
2723 no_shared_libraries (NULL
, from_tty
);
2725 /* If we still have inferiors to debug, then don't mess with their
2727 if (!have_inferiors ())
2728 init_thread_list ();
2730 if (deprecated_detach_hook
)
2731 deprecated_detach_hook ();
2734 /* Disconnect from the current target without resuming it (leaving it
2735 waiting for a debugger).
2737 We'd better not have left any breakpoints in the program or the
2738 next debugger will get confused. Currently only supported for some
2739 remote targets, since the normal attach mechanisms don't work on
2740 stopped processes on some native platforms (e.g. GNU/Linux). */
2743 disconnect_command (char *args
, int from_tty
)
2745 dont_repeat (); /* Not for the faint of heart. */
2746 query_if_trace_running (from_tty
);
2747 disconnect_tracing ();
2748 target_disconnect (args
, from_tty
);
2749 no_shared_libraries (NULL
, from_tty
);
2750 init_thread_list ();
2751 if (deprecated_detach_hook
)
2752 deprecated_detach_hook ();
2756 interrupt_target_1 (int all_threads
)
2761 ptid
= minus_one_ptid
;
2763 ptid
= inferior_ptid
;
2766 /* Tag the thread as having been explicitly requested to stop, so
2767 other parts of gdb know not to resume this thread automatically,
2768 if it was stopped due to an internal event. Limit this to
2769 non-stop mode, as when debugging a multi-threaded application in
2770 all-stop mode, we will only get one stop event --- it's undefined
2771 which thread will report the event. */
2773 set_stop_requested (ptid
, 1);
2776 /* Stop the execution of the target while running in async mode, in
2777 the backgound. In all-stop, stop the whole process. In non-stop
2778 mode, stop the current thread only by default, or stop all threads
2779 if the `-a' switch is used. */
2781 /* interrupt [-a] */
2783 interrupt_target_command (char *args
, int from_tty
)
2785 if (target_can_async_p ())
2787 int all_threads
= 0;
2789 dont_repeat (); /* Not for the faint of heart. */
2792 && strncmp (args
, "-a", sizeof ("-a") - 1) == 0)
2795 if (!non_stop
&& all_threads
)
2796 error (_("-a is meaningless in all-stop mode."));
2798 interrupt_target_1 (all_threads
);
2803 print_float_info (struct ui_file
*file
,
2804 struct frame_info
*frame
, const char *args
)
2806 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
2808 if (gdbarch_print_float_info_p (gdbarch
))
2809 gdbarch_print_float_info (gdbarch
, file
, frame
, args
);
2813 int printed_something
= 0;
2816 regnum
< gdbarch_num_regs (gdbarch
)
2817 + gdbarch_num_pseudo_regs (gdbarch
);
2820 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, float_reggroup
))
2822 printed_something
= 1;
2823 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
2826 if (!printed_something
)
2827 fprintf_filtered (file
, "No floating-point info "
2828 "available for this processor.\n");
2833 float_info (char *args
, int from_tty
)
2835 if (!target_has_registers
)
2836 error (_("The program has no registers now."));
2838 print_float_info (gdb_stdout
, get_selected_frame (NULL
), args
);
2842 unset_command (char *args
, int from_tty
)
2844 printf_filtered (_("\"unset\" must be followed by the "
2845 "name of an unset subcommand.\n"));
2846 help_list (unsetlist
, "unset ", -1, gdb_stdout
);
2849 /* Implement `info proc' family of commands. */
2852 info_proc_cmd_1 (char *args
, enum info_proc_what what
, int from_tty
)
2854 struct gdbarch
*gdbarch
= get_current_arch ();
2856 if (!target_info_proc (args
, what
))
2858 if (gdbarch_info_proc_p (gdbarch
))
2859 gdbarch_info_proc (gdbarch
, args
, what
);
2861 error (_("Not supported on this target."));
2865 /* Implement `info proc' when given without any futher parameters. */
2868 info_proc_cmd (char *args
, int from_tty
)
2870 info_proc_cmd_1 (args
, IP_MINIMAL
, from_tty
);
2873 /* Implement `info proc mappings'. */
2876 info_proc_cmd_mappings (char *args
, int from_tty
)
2878 info_proc_cmd_1 (args
, IP_MAPPINGS
, from_tty
);
2881 /* Implement `info proc stat'. */
2884 info_proc_cmd_stat (char *args
, int from_tty
)
2886 info_proc_cmd_1 (args
, IP_STAT
, from_tty
);
2889 /* Implement `info proc status'. */
2892 info_proc_cmd_status (char *args
, int from_tty
)
2894 info_proc_cmd_1 (args
, IP_STATUS
, from_tty
);
2897 /* Implement `info proc cwd'. */
2900 info_proc_cmd_cwd (char *args
, int from_tty
)
2902 info_proc_cmd_1 (args
, IP_CWD
, from_tty
);
2905 /* Implement `info proc cmdline'. */
2908 info_proc_cmd_cmdline (char *args
, int from_tty
)
2910 info_proc_cmd_1 (args
, IP_CMDLINE
, from_tty
);
2913 /* Implement `info proc exe'. */
2916 info_proc_cmd_exe (char *args
, int from_tty
)
2918 info_proc_cmd_1 (args
, IP_EXE
, from_tty
);
2921 /* Implement `info proc all'. */
2924 info_proc_cmd_all (char *args
, int from_tty
)
2926 info_proc_cmd_1 (args
, IP_ALL
, from_tty
);
2930 _initialize_infcmd (void)
2932 static struct cmd_list_element
*info_proc_cmdlist
;
2933 struct cmd_list_element
*c
= NULL
;
2934 const char *cmd_name
;
2936 /* Add the filename of the terminal connected to inferior I/O. */
2937 add_setshow_filename_cmd ("inferior-tty", class_run
,
2938 &inferior_io_terminal_scratch
, _("\
2939 Set terminal for future runs of program being debugged."), _("\
2940 Show terminal for future runs of program being debugged."), _("\
2941 Usage: set inferior-tty /dev/pts/1"),
2942 set_inferior_tty_command
,
2943 show_inferior_tty_command
,
2944 &setlist
, &showlist
);
2945 add_com_alias ("tty", "set inferior-tty", class_alias
, 0);
2948 add_setshow_string_noescape_cmd (cmd_name
, class_run
,
2949 &inferior_args_scratch
, _("\
2950 Set argument list to give program being debugged when it is started."), _("\
2951 Show argument list to give program being debugged when it is started."), _("\
2952 Follow this command with any number of args, to be passed to the program."),
2955 &setlist
, &showlist
);
2956 c
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
2957 gdb_assert (c
!= NULL
);
2958 set_cmd_completer (c
, filename_completer
);
2960 c
= add_cmd ("environment", no_class
, environment_info
, _("\
2961 The environment to give the program, or one variable's value.\n\
2962 With an argument VAR, prints the value of environment variable VAR to\n\
2963 give the program being debugged. With no arguments, prints the entire\n\
2964 environment to be given to the program."), &showlist
);
2965 set_cmd_completer (c
, noop_completer
);
2967 add_prefix_cmd ("unset", no_class
, unset_command
,
2968 _("Complement to certain \"set\" commands."),
2969 &unsetlist
, "unset ", 0, &cmdlist
);
2971 c
= add_cmd ("environment", class_run
, unset_environment_command
, _("\
2972 Cancel environment variable VAR for the program.\n\
2973 This does not affect the program until the next \"run\" command."),
2975 set_cmd_completer (c
, noop_completer
);
2977 c
= add_cmd ("environment", class_run
, set_environment_command
, _("\
2978 Set environment variable value to give the program.\n\
2979 Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\
2980 VALUES of environment variables are uninterpreted strings.\n\
2981 This does not affect the program until the next \"run\" command."),
2983 set_cmd_completer (c
, noop_completer
);
2985 c
= add_com ("path", class_files
, path_command
, _("\
2986 Add directory DIR(s) to beginning of search path for object files.\n\
2987 $cwd in the path means the current working directory.\n\
2988 This path is equivalent to the $PATH shell variable. It is a list of\n\
2989 directories, separated by colons. These directories are searched to find\n\
2990 fully linked executable files and separately compiled object files as \
2992 set_cmd_completer (c
, filename_completer
);
2994 c
= add_cmd ("paths", no_class
, path_info
, _("\
2995 Current search path for finding object files.\n\
2996 $cwd in the path means the current working directory.\n\
2997 This path is equivalent to the $PATH shell variable. It is a list of\n\
2998 directories, separated by colons. These directories are searched to find\n\
2999 fully linked executable files and separately compiled object files as \
3002 set_cmd_completer (c
, noop_completer
);
3004 add_prefix_cmd ("kill", class_run
, kill_command
,
3005 _("Kill execution of program being debugged."),
3006 &killlist
, "kill ", 0, &cmdlist
);
3008 add_com ("attach", class_run
, attach_command
, _("\
3009 Attach to a process or file outside of GDB.\n\
3010 This command attaches to another target, of the same type as your last\n\
3011 \"target\" command (\"info files\" will show your target stack).\n\
3012 The command may take as argument a process id or a device file.\n\
3013 For a process id, you must have permission to send the process a signal,\n\
3014 and it must have the same effective uid as the debugger.\n\
3015 When using \"attach\" with a process id, the debugger finds the\n\
3016 program running in the process, looking first in the current working\n\
3017 directory, or (if not found there) using the source file search path\n\
3018 (see the \"directory\" command). You can also use the \"file\" command\n\
3019 to specify the program, and to load its symbol table."));
3021 add_prefix_cmd ("detach", class_run
, detach_command
, _("\
3022 Detach a process or file previously attached.\n\
3023 If a process, it is no longer traced, and it continues its execution. If\n\
3024 you were debugging a file, the file is closed and gdb no longer accesses it."),
3025 &detachlist
, "detach ", 0, &cmdlist
);
3027 add_com ("disconnect", class_run
, disconnect_command
, _("\
3028 Disconnect from a target.\n\
3029 The target will wait for another debugger to connect. Not available for\n\
3032 c
= add_com ("signal", class_run
, signal_command
, _("\
3033 Continue program with the specified signal.\n\
3034 Usage: signal SIGNAL\n\
3035 The SIGNAL argument is processed the same as the handle command.\n\
3037 An argument of \"0\" means continue the program without sending it a signal.\n\
3038 This is useful in cases where the program stopped because of a signal,\n\
3039 and you want to resume the program while discarding the signal."));
3040 set_cmd_completer (c
, signal_completer
);
3042 add_com ("stepi", class_run
, stepi_command
, _("\
3043 Step one instruction exactly.\n\
3045 Argument N means step N times (or till program stops for another \
3047 add_com_alias ("si", "stepi", class_alias
, 0);
3049 add_com ("nexti", class_run
, nexti_command
, _("\
3050 Step one instruction, but proceed through subroutine calls.\n\
3052 Argument N means step N times (or till program stops for another \
3054 add_com_alias ("ni", "nexti", class_alias
, 0);
3056 add_com ("finish", class_run
, finish_command
, _("\
3057 Execute until selected stack frame returns.\n\
3059 Upon return, the value returned is printed and put in the value history."));
3060 add_com_alias ("fin", "finish", class_run
, 1);
3062 add_com ("next", class_run
, next_command
, _("\
3063 Step program, proceeding through subroutine calls.\n\
3065 Unlike \"step\", if the current source line calls a subroutine,\n\
3066 this command does not enter the subroutine, but instead steps over\n\
3067 the call, in effect treating it as a single source line."));
3068 add_com_alias ("n", "next", class_run
, 1);
3070 add_com_alias ("S", "next", class_run
, 1);
3072 add_com ("step", class_run
, step_command
, _("\
3073 Step program until it reaches a different source line.\n\
3075 Argument N means step N times (or till program stops for another \
3077 add_com_alias ("s", "step", class_run
, 1);
3079 c
= add_com ("until", class_run
, until_command
, _("\
3080 Execute until the program reaches a source line greater than the current\n\
3081 or a specified location (same args as break command) within the current \
3083 set_cmd_completer (c
, location_completer
);
3084 add_com_alias ("u", "until", class_run
, 1);
3086 c
= add_com ("advance", class_run
, advance_command
, _("\
3087 Continue the program up to the given location (same form as args for break \
3089 Execution will also stop upon exit from the current stack frame."));
3090 set_cmd_completer (c
, location_completer
);
3092 c
= add_com ("jump", class_run
, jump_command
, _("\
3093 Continue program being debugged at specified line or address.\n\
3094 Usage: jump <location>\n\
3095 Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\
3096 for an address to start at."));
3097 set_cmd_completer (c
, location_completer
);
3098 add_com_alias ("j", "jump", class_run
, 1);
3102 c
= add_com ("go", class_run
, go_command
, _("\
3103 Usage: go <location>\n\
3104 Continue program being debugged, stopping at specified line or \n\
3106 Give as argument either LINENUM or *ADDR, where ADDR is an \n\
3107 expression for an address to start at.\n\
3108 This command is a combination of tbreak and jump."));
3109 set_cmd_completer (c
, location_completer
);
3113 add_com_alias ("g", "go", class_run
, 1);
3115 add_com ("continue", class_run
, continue_command
, _("\
3116 Continue program being debugged, after signal or breakpoint.\n\
3117 Usage: continue [N]\n\
3118 If proceeding from breakpoint, a number N may be used as an argument,\n\
3119 which means to set the ignore count of that breakpoint to N - 1 (so that\n\
3120 the breakpoint won't break until the Nth time it is reached).\n\
3122 If non-stop mode is enabled, continue only the current thread,\n\
3123 otherwise all the threads in the program are continued. To \n\
3124 continue all stopped threads in non-stop mode, use the -a option.\n\
3125 Specifying -a and an ignore count simultaneously is an error."));
3126 add_com_alias ("c", "cont", class_run
, 1);
3127 add_com_alias ("fg", "cont", class_run
, 1);
3129 c
= add_com ("run", class_run
, run_command
, _("\
3130 Start debugged program. You may specify arguments to give it.\n\
3131 Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\
3132 Input and output redirection with \">\", \"<\", or \">>\" are also \
3134 With no arguments, uses arguments last specified (with \"run\" \
3135 or \"set args\").\n\
3136 To cancel previous arguments and run with no arguments,\n\
3137 use \"set args\" without arguments."));
3138 set_cmd_completer (c
, filename_completer
);
3139 add_com_alias ("r", "run", class_run
, 1);
3141 add_com ("R", class_run
, run_no_args_command
,
3142 _("Start debugged program with no arguments."));
3144 c
= add_com ("start", class_run
, start_command
, _("\
3145 Run the debugged program until the beginning of the main procedure.\n\
3146 You may specify arguments to give to your program, just as with the\n\
3147 \"run\" command."));
3148 set_cmd_completer (c
, filename_completer
);
3150 add_com ("interrupt", class_run
, interrupt_target_command
,
3151 _("Interrupt the execution of the debugged program.\n\
3152 If non-stop mode is enabled, interrupt only the current thread,\n\
3153 otherwise all the threads in the program are stopped. To \n\
3154 interrupt all running threads in non-stop mode, use the -a option."));
3156 add_info ("registers", nofp_registers_info
, _("\
3157 List of integer registers and their contents, for selected stack frame.\n\
3158 Register name as argument means describe only that register."));
3159 add_info_alias ("r", "registers", 1);
3162 add_com ("lr", class_info
, 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 ("all-registers", all_registers_info
, _("\
3166 List of all registers and their contents, for selected stack frame.\n\
3167 Register name as argument means describe only that register."));
3169 add_info ("program", program_info
,
3170 _("Execution status of the program."));
3172 add_info ("float", float_info
,
3173 _("Print the status of the floating point unit\n"));
3175 add_info ("vector", vector_info
,
3176 _("Print the status of the vector unit\n"));
3178 add_prefix_cmd ("proc", class_info
, info_proc_cmd
,
3180 Show /proc process information about any running process.\n\
3181 Specify any process id, or use the program being debugged by default."),
3182 &info_proc_cmdlist
, "info proc ",
3183 1/*allow-unknown*/, &infolist
);
3185 add_cmd ("mappings", class_info
, info_proc_cmd_mappings
, _("\
3186 List of mapped memory regions."),
3187 &info_proc_cmdlist
);
3189 add_cmd ("stat", class_info
, info_proc_cmd_stat
, _("\
3190 List process info from /proc/PID/stat."),
3191 &info_proc_cmdlist
);
3193 add_cmd ("status", class_info
, info_proc_cmd_status
, _("\
3194 List process info from /proc/PID/status."),
3195 &info_proc_cmdlist
);
3197 add_cmd ("cwd", class_info
, info_proc_cmd_cwd
, _("\
3198 List current working directory of the process."),
3199 &info_proc_cmdlist
);
3201 add_cmd ("cmdline", class_info
, info_proc_cmd_cmdline
, _("\
3202 List command line arguments of the process."),
3203 &info_proc_cmdlist
);
3205 add_cmd ("exe", class_info
, info_proc_cmd_exe
, _("\
3206 List absolute filename for executable of the process."),
3207 &info_proc_cmdlist
);
3209 add_cmd ("all", class_info
, info_proc_cmd_all
, _("\
3210 List all available /proc info."),
3211 &info_proc_cmdlist
);