1 /* Memory-access and commands for "inferior" process, for GDB.
3 Copyright (C) 1986-2014 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"
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. */
238 set_args_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
240 /* CLI has assigned the user-provided value to inferior_args_scratch.
241 Now route it to current inferior. */
242 set_inferior_args (inferior_args_scratch
);
245 /* Notice when `show args' is run. */
248 show_args_command (struct ui_file
*file
, int from_tty
,
249 struct cmd_list_element
*c
, const char *value
)
251 /* Note that we ignore the passed-in value in favor of computing it
253 deprecated_show_value_hack (file
, from_tty
, c
, get_inferior_args ());
257 /* Compute command-line string given argument vector. This does the
258 same shell processing as fork_inferior. */
261 construct_inferior_arguments (int argc
, char **argv
)
265 if (startup_with_shell
)
268 /* This holds all the characters considered special to the
270 char *special
= "\"!&*|[]{}<>?`~^=;, \t\n";
271 const char quote
= '"';
273 /* This holds all the characters considered special to the
274 typical Unix shells. We include `^' because the SunOS
275 /bin/sh treats it as a synonym for `|'. */
276 char *special
= "\"!#$&*()\\|[]{}<>?'`~^; \t\n";
277 const char quote
= '\'';
283 /* We over-compute the size. It shouldn't matter. */
284 for (i
= 0; i
< argc
; ++i
)
285 length
+= 3 * strlen (argv
[i
]) + 1 + 2 * (argv
[i
][0] == '\0');
287 result
= (char *) xmalloc (length
);
290 for (i
= 0; i
< argc
; ++i
)
295 /* Need to handle empty arguments specially. */
296 if (argv
[i
][0] == '\0')
306 if (strpbrk (argv
[i
], special
))
312 for (cp
= argv
[i
]; *cp
; ++cp
)
316 /* A newline cannot be quoted with a backslash (it
317 just disappears), only by putting it inside
328 if (strchr (special
, *cp
) != NULL
)
344 /* In this case we can't handle arguments that contain spaces,
345 tabs, or newlines -- see breakup_args(). */
349 for (i
= 0; i
< argc
; ++i
)
351 char *cp
= strchr (argv
[i
], ' ');
353 cp
= strchr (argv
[i
], '\t');
355 cp
= strchr (argv
[i
], '\n');
357 error (_("can't handle command-line "
358 "argument containing whitespace"));
359 length
+= strlen (argv
[i
]) + 1;
362 result
= (char *) xmalloc (length
);
364 for (i
= 0; i
< argc
; ++i
)
367 strcat (result
, " ");
368 strcat (result
, argv
[i
]);
376 /* This function detects whether or not a '&' character (indicating
377 background execution) has been added as *the last* of the arguments ARGS
378 of a command. If it has, it removes it and returns 1. Otherwise it
379 does nothing and returns 0. */
382 strip_bg_char (char **args
)
386 p
= strchr (*args
, '&');
390 if (p
== (*args
+ strlen (*args
) - 1))
392 if (strlen (*args
) > 1)
396 while (*p
== ' ' || *p
== '\t');
407 /* Common actions to take after creating any sort of inferior, by any
408 means (running, attaching, connecting, et cetera). The target
409 should be stopped. */
412 post_create_inferior (struct target_ops
*target
, int from_tty
)
414 volatile struct gdb_exception ex
;
416 /* Be sure we own the terminal in case write operations are performed. */
417 target_terminal_ours ();
419 /* If the target hasn't taken care of this already, do it now.
420 Targets which need to access registers during to_open,
421 to_create_inferior, or to_attach should do it earlier; but many
423 target_find_description ();
425 /* Now that we know the register layout, retrieve current PC. But
426 if the PC is unavailable (e.g., we're opening a core file with
427 missing registers info), ignore it. */
429 TRY_CATCH (ex
, RETURN_MASK_ERROR
)
431 stop_pc
= regcache_read_pc (get_current_regcache ());
433 if (ex
.reason
< 0 && ex
.error
!= NOT_AVAILABLE_ERROR
)
434 throw_exception (ex
);
438 const unsigned solib_add_generation
439 = current_program_space
->solib_add_generation
;
441 /* Create the hooks to handle shared library load and unload
443 solib_create_inferior_hook (from_tty
);
445 if (current_program_space
->solib_add_generation
== solib_add_generation
)
447 /* The platform-specific hook should load initial shared libraries,
448 but didn't. FROM_TTY will be incorrectly 0 but such solib
449 targets should be fixed anyway. Call it only after the solib
450 target has been initialized by solib_create_inferior_hook. */
453 warning (_("platform-specific solib_create_inferior_hook did "
454 "not load initial shared libraries."));
456 /* If the solist is global across processes, there's no need to
458 if (!gdbarch_has_global_solist (target_gdbarch ()))
459 solib_add (NULL
, 0, target
, auto_solib_add
);
463 /* If the user sets watchpoints before execution having started,
464 then she gets software watchpoints, because GDB can't know which
465 target will end up being pushed, or if it supports hardware
466 watchpoints or not. breakpoint_re_set takes care of promoting
467 watchpoints to hardware watchpoints if possible, however, if this
468 new inferior doesn't load shared libraries or we don't pull in
469 symbols from any other source on this target/arch,
470 breakpoint_re_set is never called. Call it now so that software
471 watchpoints get a chance to be promoted to hardware watchpoints
472 if the now pushed target supports hardware watchpoints. */
473 breakpoint_re_set ();
475 observer_notify_inferior_created (target
, from_tty
);
478 /* Kill the inferior if already running. This function is designed
479 to be called when we are about to start the execution of the program
480 from the beginning. Ask the user to confirm that he wants to restart
481 the program being debugged when FROM_TTY is non-null. */
484 kill_if_already_running (int from_tty
)
486 if (! ptid_equal (inferior_ptid
, null_ptid
) && target_has_execution
)
488 /* Bail out before killing the program if we will not be able to
490 target_require_runnable ();
493 && !query (_("The program being debugged has been started already.\n\
494 Start it from the beginning? ")))
495 error (_("Program not restarted."));
500 /* Prepare for execution command. TARGET is the target that will run
501 the command. BACKGROUND determines whether this is a foreground
502 (synchronous) or background (asynchronous) command. */
505 prepare_execution_command (struct target_ops
*target
, int background
)
507 /* If we get a request for running in the bg but the target
508 doesn't support it, error out. */
509 if (background
&& !target
->to_can_async_p (target
))
510 error (_("Asynchronous execution not supported on this target."));
512 /* If we don't get a request of running in the bg, then we need
513 to simulate synchronous (fg) execution. */
514 if (!background
&& target
->to_can_async_p (target
))
516 /* Simulate synchronous execution. Note no cleanup is necessary
517 for this. stdin is re-enabled whenever an error reaches the
519 async_disable_stdin ();
523 /* Implement the "run" command. If TBREAK_AT_MAIN is set, then insert
524 a temporary breakpoint at the begining of the main program before
525 running the program. */
528 run_command_1 (char *args
, int from_tty
, int tbreak_at_main
)
531 struct cleanup
*old_chain
;
533 struct ui_out
*uiout
= current_uiout
;
534 struct target_ops
*run_target
;
539 kill_if_already_running (from_tty
);
541 init_wait_for_inferior ();
542 clear_breakpoint_hit_counts ();
544 /* Clean up any leftovers from other runs. Some other things from
545 this function should probably be moved into target_pre_inferior. */
546 target_pre_inferior (from_tty
);
548 /* The comment here used to read, "The exec file is re-read every
549 time we do a generic_mourn_inferior, so we just have to worry
550 about the symbol file." The `generic_mourn_inferior' function
551 gets called whenever the program exits. However, suppose the
552 program exits, and *then* the executable file changes? We need
553 to check again here. Since reopen_exec_file doesn't do anything
554 if the timestamp hasn't changed, I don't see the harm. */
559 async_exec
= strip_bg_char (&args
);
561 /* Do validation and preparation before possibly changing anything
564 run_target
= find_run_target ();
566 prepare_execution_command (run_target
, async_exec
);
568 if (non_stop
&& !run_target
->to_supports_non_stop (run_target
))
569 error (_("The target does not support running in non-stop mode."));
571 /* Done. Can now set breakpoints, change inferior args, etc. */
573 /* Insert the temporary breakpoint if a location was specified. */
575 tbreak_command (main_name (), 0);
577 exec_file
= (char *) get_exec_file (0);
579 /* We keep symbols from add-symbol-file, on the grounds that the
580 user might want to add some symbols before running the program
581 (right?). But sometimes (dynamic loading where the user manually
582 introduces the new symbols with add-symbol-file), the code which
583 the symbols describe does not persist between runs. Currently
584 the user has to manually nuke all symbols between runs if they
585 want them to go away (PR 2207). This is probably reasonable. */
587 /* If there were other args, beside '&', process them. */
589 set_inferior_args (args
);
593 ui_out_field_string (uiout
, NULL
, "Starting program");
594 ui_out_text (uiout
, ": ");
596 ui_out_field_string (uiout
, "execfile", exec_file
);
597 ui_out_spaces (uiout
, 1);
598 /* We call get_inferior_args() because we might need to compute
600 ui_out_field_string (uiout
, "infargs", get_inferior_args ());
601 ui_out_text (uiout
, "\n");
602 ui_out_flush (uiout
);
605 /* We call get_inferior_args() because we might need to compute
607 run_target
->to_create_inferior (run_target
, exec_file
, get_inferior_args (),
608 environ_vector (current_inferior ()->environment
),
610 /* to_create_inferior should push the target, so after this point we
611 shouldn't refer to run_target again. */
614 /* We're starting off a new process. When we get out of here, in
615 non-stop mode, finish the state of all threads of that process,
616 but leave other threads alone, as they may be stopped in internal
617 events --- the frontend shouldn't see them as stopped. In
618 all-stop, always finish the state of all threads, as we may be
619 resuming more than just the new process. */
621 ptid
= pid_to_ptid (ptid_get_pid (inferior_ptid
));
623 ptid
= minus_one_ptid
;
624 old_chain
= make_cleanup (finish_thread_state_cleanup
, &ptid
);
626 /* Pass zero for FROM_TTY, because at this point the "run" command
627 has done its thing; now we are setting up the running program. */
628 post_create_inferior (¤t_target
, 0);
630 /* Start the target running. Do not use -1 continuation as it would skip
631 breakpoint right at the entry point. */
632 proceed (regcache_read_pc (get_current_regcache ()), GDB_SIGNAL_0
, 0);
634 /* Since there was no error, there's no need to finish the thread
636 discard_cleanups (old_chain
);
640 run_command (char *args
, int from_tty
)
642 run_command_1 (args
, from_tty
, 0);
646 run_no_args_command (char *args
, int from_tty
)
648 set_inferior_args ("");
652 /* Start the execution of the program up until the beginning of the main
656 start_command (char *args
, int from_tty
)
658 /* Some languages such as Ada need to search inside the program
659 minimal symbols for the location where to put the temporary
660 breakpoint before starting. */
661 if (!have_minimal_symbols ())
662 error (_("No symbol table loaded. Use the \"file\" command."));
664 /* Run the program until reaching the main procedure... */
665 run_command_1 (args
, from_tty
, 1);
669 proceed_thread_callback (struct thread_info
*thread
, void *arg
)
671 /* We go through all threads individually instead of compressing
672 into a single target `resume_all' request, because some threads
673 may be stopped in internal breakpoints/events, or stopped waiting
674 for its turn in the displaced stepping queue (that is, they are
675 running && !executing). The target side has no idea about why
676 the thread is stopped, so a `resume_all' command would resume too
677 much. If/when GDB gains a way to tell the target `hold this
678 thread stopped until I say otherwise', then we can optimize
680 if (!is_stopped (thread
->ptid
))
683 switch_to_thread (thread
->ptid
);
684 clear_proceed_status ();
685 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
690 ensure_valid_thread (void)
692 if (ptid_equal (inferior_ptid
, null_ptid
)
693 || is_exited (inferior_ptid
))
694 error (_("Cannot execute this command without a live selected thread."));
697 /* If the user is looking at trace frames, any resumption of execution
698 is likely to mix up recorded and live target data. So simply
699 disallow those commands. */
702 ensure_not_tfind_mode (void)
704 if (get_traceframe_number () >= 0)
705 error (_("Cannot execute this command while looking at trace frames."));
708 /* Throw an error indicating the current thread is running. */
711 error_is_running (void)
713 error (_("Cannot execute this command while "
714 "the selected thread is running."));
717 /* Calls error_is_running if the current thread is running. */
720 ensure_not_running (void)
722 if (is_running (inferior_ptid
))
727 continue_1 (int all_threads
)
730 ensure_not_tfind_mode ();
732 if (non_stop
&& all_threads
)
734 /* Don't error out if the current thread is running, because
735 there may be other stopped threads. */
736 struct cleanup
*old_chain
;
738 /* Backup current thread and selected frame. */
739 old_chain
= make_cleanup_restore_current_thread ();
741 iterate_over_threads (proceed_thread_callback
, NULL
);
743 /* Restore selected ptid. */
744 do_cleanups (old_chain
);
748 ensure_valid_thread ();
749 ensure_not_running ();
750 clear_proceed_status ();
751 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
755 /* continue [-a] [proceed-count] [&] */
758 continue_command (char *args
, int from_tty
)
764 /* Find out whether we must run in the background. */
766 async_exec
= strip_bg_char (&args
);
768 prepare_execution_command (¤t_target
, async_exec
);
772 if (strncmp (args
, "-a", sizeof ("-a") - 1) == 0)
775 args
+= sizeof ("-a") - 1;
781 if (!non_stop
&& all_threads
)
782 error (_("`-a' is meaningless in all-stop mode."));
784 if (args
!= NULL
&& all_threads
)
785 error (_("Can't resume all threads and specify "
786 "proceed count simultaneously."));
788 /* If we have an argument left, set proceed count of breakpoint we
795 struct thread_info
*tp
;
798 tp
= find_thread_ptid (inferior_ptid
);
802 struct target_waitstatus ws
;
804 get_last_target_status (&last_ptid
, &ws
);
805 tp
= find_thread_ptid (last_ptid
);
808 bs
= tp
->control
.stop_bpstat
;
810 while ((stat
= bpstat_num (&bs
, &num
)) != 0)
813 set_ignore_count (num
,
814 parse_and_eval_long (args
) - 1,
816 /* set_ignore_count prints a message ending with a period.
817 So print two spaces before "Continuing.". */
819 printf_filtered (" ");
823 if (!stopped
&& from_tty
)
826 ("Not stopped at any breakpoint; argument ignored.\n");
831 printf_filtered (_("Continuing.\n"));
833 continue_1 (all_threads
);
836 /* Record the starting point of a "step" or "next" command. */
839 set_step_frame (void)
841 struct symtab_and_line sal
;
843 find_frame_sal (get_current_frame (), &sal
);
844 set_step_info (get_current_frame (), sal
);
847 /* Step until outside of current statement. */
850 step_command (char *count_string
, int from_tty
)
852 step_1 (0, 0, count_string
);
855 /* Likewise, but skip over subroutine calls as if single instructions. */
858 next_command (char *count_string
, int from_tty
)
860 step_1 (1, 0, count_string
);
863 /* Likewise, but step only one instruction. */
866 stepi_command (char *count_string
, int from_tty
)
868 step_1 (0, 1, count_string
);
872 nexti_command (char *count_string
, int from_tty
)
874 step_1 (1, 1, count_string
);
878 delete_longjmp_breakpoint_cleanup (void *arg
)
880 int thread
= * (int *) arg
;
881 delete_longjmp_breakpoint (thread
);
885 step_1 (int skip_subroutines
, int single_inst
, char *count_string
)
888 struct cleanup
*cleanups
= make_cleanup (null_cleanup
, NULL
);
893 ensure_not_tfind_mode ();
894 ensure_valid_thread ();
895 ensure_not_running ();
898 async_exec
= strip_bg_char (&count_string
);
900 prepare_execution_command (¤t_target
, async_exec
);
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. */
971 step_1_continuation (void *args
, int err
)
973 struct step_1_continuation_args
*a
= args
;
975 if (target_has_execution
)
977 struct thread_info
*tp
;
979 tp
= inferior_thread ();
981 && tp
->step_multi
&& tp
->control
.stop_step
)
983 /* There are more steps to make, and we did stop due to
984 ending a stepping range. Do another step. */
985 step_once (a
->skip_subroutines
, a
->single_inst
,
986 a
->count
- 1, a
->thread
);
992 /* We either hit an error, or stopped for some reason that is
993 not stepping, or there are no further steps to make.
995 if (!a
->single_inst
|| a
->skip_subroutines
)
996 delete_longjmp_breakpoint (a
->thread
);
999 /* Do just one step operation. This is useful to implement the 'step
1000 n' kind of commands. In case of asynchronous targets, we will have
1001 to set up a continuation to be done after the target stops (after
1002 this one step). For synch targets, the caller handles further
1006 step_once (int skip_subroutines
, int single_inst
, int count
, int thread
)
1008 struct frame_info
*frame
= get_current_frame ();
1012 /* Don't assume THREAD is a valid thread id. It is set to -1 if
1013 the longjmp breakpoint was not required. Use the
1014 INFERIOR_PTID thread instead, which is the same thread when
1016 struct thread_info
*tp
= inferior_thread ();
1018 clear_proceed_status ();
1025 /* Step at an inlined function behaves like "down". */
1026 if (!skip_subroutines
1027 && inline_skipped_frames (inferior_ptid
))
1031 /* Pretend that we've ran. */
1032 resume_ptid
= user_visible_resume_ptid (1);
1033 set_running (resume_ptid
, 1);
1035 step_into_inline_frame (inferior_ptid
);
1037 step_once (skip_subroutines
, single_inst
, count
- 1, thread
);
1040 /* Pretend that we've stopped. */
1043 if (target_can_async_p ())
1044 inferior_event_handler (INF_EXEC_COMPLETE
, NULL
);
1049 pc
= get_frame_pc (frame
);
1050 find_pc_line_pc_range (pc
,
1051 &tp
->control
.step_range_start
,
1052 &tp
->control
.step_range_end
);
1054 tp
->control
.may_range_step
= 1;
1056 /* If we have no line info, switch to stepi mode. */
1057 if (tp
->control
.step_range_end
== 0 && step_stop_if_no_debug
)
1059 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1060 tp
->control
.may_range_step
= 0;
1062 else if (tp
->control
.step_range_end
== 0)
1066 if (find_pc_partial_function (pc
, &name
,
1067 &tp
->control
.step_range_start
,
1068 &tp
->control
.step_range_end
) == 0)
1069 error (_("Cannot find bounds of current function"));
1071 target_terminal_ours ();
1072 printf_filtered (_("Single stepping until exit from function %s,"
1073 "\nwhich has no line number information.\n"),
1079 /* Say we are stepping, but stop after one insn whatever it does. */
1080 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1081 if (!skip_subroutines
)
1083 Don't step over function calls, not even to functions lacking
1085 tp
->control
.step_over_calls
= STEP_OVER_NONE
;
1088 if (skip_subroutines
)
1089 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1091 tp
->step_multi
= (count
> 1);
1092 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 1);
1094 /* For async targets, register a continuation to do any
1095 additional steps. For sync targets, the caller will handle
1096 further stepping. */
1097 if (target_can_async_p ())
1099 struct step_1_continuation_args
*args
;
1101 args
= xmalloc (sizeof (*args
));
1102 args
->skip_subroutines
= skip_subroutines
;
1103 args
->single_inst
= single_inst
;
1104 args
->count
= count
;
1105 args
->thread
= thread
;
1107 add_intermediate_continuation (tp
, step_1_continuation
, args
, xfree
);
1113 /* Continue program at specified address. */
1116 jump_command (char *arg
, int from_tty
)
1118 struct gdbarch
*gdbarch
= get_current_arch ();
1120 struct symtabs_and_lines sals
;
1121 struct symtab_and_line sal
;
1127 ensure_not_tfind_mode ();
1128 ensure_valid_thread ();
1129 ensure_not_running ();
1131 /* Find out whether we must run in the background. */
1133 async_exec
= strip_bg_char (&arg
);
1135 prepare_execution_command (¤t_target
, async_exec
);
1138 error_no_arg (_("starting address"));
1140 sals
= decode_line_with_last_displayed (arg
, DECODE_LINE_FUNFIRSTLINE
);
1141 if (sals
.nelts
!= 1)
1143 error (_("Unreasonable jump request"));
1149 if (sal
.symtab
== 0 && sal
.pc
== 0)
1150 error (_("No source file has been specified."));
1152 resolve_sal_pc (&sal
); /* May error out. */
1154 /* See if we are trying to jump to another function. */
1155 fn
= get_frame_function (get_current_frame ());
1156 sfn
= find_pc_function (sal
.pc
);
1157 if (fn
!= NULL
&& sfn
!= fn
)
1159 if (!query (_("Line %d is not in `%s'. Jump anyway? "), sal
.line
,
1160 SYMBOL_PRINT_NAME (fn
)))
1162 error (_("Not confirmed."));
1169 fixup_symbol_section (sfn
, 0);
1170 if (section_is_overlay (SYMBOL_OBJ_SECTION (SYMBOL_OBJFILE (sfn
), sfn
)) &&
1171 !section_is_mapped (SYMBOL_OBJ_SECTION (SYMBOL_OBJFILE (sfn
), sfn
)))
1173 if (!query (_("WARNING!!! Destination is in "
1174 "unmapped overlay! Jump anyway? ")))
1176 error (_("Not confirmed."));
1186 printf_filtered (_("Continuing at "));
1187 fputs_filtered (paddress (gdbarch
, addr
), gdb_stdout
);
1188 printf_filtered (".\n");
1191 clear_proceed_status ();
1192 proceed (addr
, GDB_SIGNAL_0
, 0);
1196 /* 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 prepare_execution_command (¤t_target
, async_exec
);
1232 error_no_arg (_("signal number"));
1234 /* It would be even slicker to make signal names be valid expressions,
1235 (the type could be "enum $signal" or some such), then the user could
1236 assign them to convenience variables. */
1237 oursig
= gdb_signal_from_name (signum_exp
);
1239 if (oursig
== GDB_SIGNAL_UNKNOWN
)
1241 /* No, try numeric. */
1242 int num
= parse_and_eval_long (signum_exp
);
1245 oursig
= GDB_SIGNAL_0
;
1247 oursig
= gdb_signal_from_command (num
);
1252 if (oursig
== GDB_SIGNAL_0
)
1253 printf_filtered (_("Continuing with no signal.\n"));
1255 printf_filtered (_("Continuing with signal %s.\n"),
1256 gdb_signal_to_name (oursig
));
1259 clear_proceed_status ();
1260 proceed ((CORE_ADDR
) -1, oursig
, 0);
1263 /* Continuation args to be passed to the "until" command
1265 struct until_next_continuation_args
1267 /* The thread that was current when the command was executed. */
1271 /* A continuation callback for until_next_command. */
1274 until_next_continuation (void *arg
, int err
)
1276 struct until_next_continuation_args
*a
= arg
;
1278 delete_longjmp_breakpoint (a
->thread
);
1281 /* Proceed until we reach a different source line with pc greater than
1282 our current one or exit the function. We skip calls in both cases.
1284 Note that eventually this command should probably be changed so
1285 that only source lines are printed out when we hit the breakpoint
1286 we set. This may involve changes to wait_for_inferior and the
1287 proceed status code. */
1290 until_next_command (int from_tty
)
1292 struct frame_info
*frame
;
1294 struct symbol
*func
;
1295 struct symtab_and_line sal
;
1296 struct thread_info
*tp
= inferior_thread ();
1297 int thread
= tp
->num
;
1298 struct cleanup
*old_chain
;
1300 clear_proceed_status ();
1303 frame
= get_current_frame ();
1305 /* Step until either exited from this function or greater
1306 than the current line (if in symbolic section) or pc (if
1309 pc
= get_frame_pc (frame
);
1310 func
= find_pc_function (pc
);
1314 struct bound_minimal_symbol msymbol
= lookup_minimal_symbol_by_pc (pc
);
1316 if (msymbol
.minsym
== NULL
)
1317 error (_("Execution is not within a known function."));
1319 tp
->control
.step_range_start
= BMSYMBOL_VALUE_ADDRESS (msymbol
);
1320 tp
->control
.step_range_end
= pc
;
1324 sal
= find_pc_line (pc
, 0);
1326 tp
->control
.step_range_start
= BLOCK_START (SYMBOL_BLOCK_VALUE (func
));
1327 tp
->control
.step_range_end
= sal
.end
;
1329 tp
->control
.may_range_step
= 1;
1331 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1333 tp
->step_multi
= 0; /* Only one call to proceed */
1335 set_longjmp_breakpoint (tp
, get_frame_id (frame
));
1336 old_chain
= make_cleanup (delete_longjmp_breakpoint_cleanup
, &thread
);
1338 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 1);
1340 if (target_can_async_p () && is_running (inferior_ptid
))
1342 struct until_next_continuation_args
*cont_args
;
1344 discard_cleanups (old_chain
);
1345 cont_args
= XNEW (struct until_next_continuation_args
);
1346 cont_args
->thread
= inferior_thread ()->num
;
1348 add_continuation (tp
, until_next_continuation
, cont_args
, xfree
);
1351 do_cleanups (old_chain
);
1355 until_command (char *arg
, int from_tty
)
1360 ensure_not_tfind_mode ();
1361 ensure_valid_thread ();
1362 ensure_not_running ();
1364 /* Find out whether we must run in the background. */
1366 async_exec
= strip_bg_char (&arg
);
1368 prepare_execution_command (¤t_target
, async_exec
);
1371 until_break_command (arg
, from_tty
, 0);
1373 until_next_command (from_tty
);
1377 advance_command (char *arg
, int from_tty
)
1382 ensure_not_tfind_mode ();
1383 ensure_valid_thread ();
1384 ensure_not_running ();
1387 error_no_arg (_("a location"));
1389 /* Find out whether we must run in the background. */
1391 async_exec
= strip_bg_char (&arg
);
1393 prepare_execution_command (¤t_target
, async_exec
);
1395 until_break_command (arg
, from_tty
, 1);
1398 /* Return the value of the result of a function at the end of a 'finish'
1402 get_return_value (struct value
*function
, struct type
*value_type
)
1404 struct regcache
*stop_regs
= stop_registers
;
1405 struct gdbarch
*gdbarch
;
1406 struct value
*value
;
1407 struct cleanup
*cleanup
= make_cleanup (null_cleanup
, NULL
);
1409 /* If stop_registers were not saved, use the current registers. */
1412 stop_regs
= regcache_dup (get_current_regcache ());
1413 make_cleanup_regcache_xfree (stop_regs
);
1416 gdbarch
= get_regcache_arch (stop_regs
);
1418 CHECK_TYPEDEF (value_type
);
1419 gdb_assert (TYPE_CODE (value_type
) != TYPE_CODE_VOID
);
1421 /* FIXME: 2003-09-27: When returning from a nested inferior function
1422 call, it's possible (with no help from the architecture vector)
1423 to locate and return/print a "struct return" value. This is just
1424 a more complicated case of what is already being done in the
1425 inferior function call code. In fact, when inferior function
1426 calls are made async, this will likely be made the norm. */
1428 switch (gdbarch_return_value (gdbarch
, function
, value_type
,
1431 case RETURN_VALUE_REGISTER_CONVENTION
:
1432 case RETURN_VALUE_ABI_RETURNS_ADDRESS
:
1433 case RETURN_VALUE_ABI_PRESERVES_ADDRESS
:
1434 value
= allocate_value (value_type
);
1435 gdbarch_return_value (gdbarch
, function
, value_type
, stop_regs
,
1436 value_contents_raw (value
), NULL
);
1438 case RETURN_VALUE_STRUCT_CONVENTION
:
1442 internal_error (__FILE__
, __LINE__
, _("bad switch"));
1445 do_cleanups (cleanup
);
1450 /* Print the result of a function at the end of a 'finish' command. */
1453 print_return_value (struct value
*function
, struct type
*value_type
)
1455 struct value
*value
= get_return_value (function
, value_type
);
1456 struct ui_out
*uiout
= current_uiout
;
1460 struct value_print_options opts
;
1461 struct ui_file
*stb
;
1462 struct cleanup
*old_chain
;
1465 stb
= mem_fileopen ();
1466 old_chain
= make_cleanup_ui_file_delete (stb
);
1467 ui_out_text (uiout
, "Value returned is ");
1468 ui_out_field_fmt (uiout
, "gdb-result-var", "$%d",
1469 record_latest_value (value
));
1470 ui_out_text (uiout
, " = ");
1471 get_no_prettyformat_print_options (&opts
);
1472 value_print (value
, stb
, &opts
);
1473 ui_out_field_stream (uiout
, "return-value", stb
);
1474 ui_out_text (uiout
, "\n");
1475 do_cleanups (old_chain
);
1479 ui_out_text (uiout
, "Value returned has type: ");
1480 ui_out_field_string (uiout
, "return-type", TYPE_NAME (value_type
));
1481 ui_out_text (uiout
, ".");
1482 ui_out_text (uiout
, " Cannot determine contents\n");
1486 /* Stuff that needs to be done by the finish command after the target
1487 has stopped. In asynchronous mode, we wait for the target to stop
1488 in the call to poll or select in the event loop, so it is
1489 impossible to do all the stuff as part of the finish_command
1490 function itself. The only chance we have to complete this command
1491 is in fetch_inferior_event, which is called by the event loop as
1492 soon as it detects that the target has stopped. */
1494 struct finish_command_continuation_args
1496 /* The thread that as current when the command was executed. */
1498 struct breakpoint
*breakpoint
;
1499 struct symbol
*function
;
1503 finish_command_continuation (void *arg
, int err
)
1505 struct finish_command_continuation_args
*a
= arg
;
1509 struct thread_info
*tp
= NULL
;
1512 if (!ptid_equal (inferior_ptid
, null_ptid
)
1513 && target_has_execution
1514 && is_stopped (inferior_ptid
))
1516 tp
= inferior_thread ();
1517 bs
= tp
->control
.stop_bpstat
;
1520 if (bpstat_find_breakpoint (bs
, a
->breakpoint
) != NULL
1521 && a
->function
!= NULL
)
1523 struct type
*value_type
;
1525 value_type
= TYPE_TARGET_TYPE (SYMBOL_TYPE (a
->function
));
1527 internal_error (__FILE__
, __LINE__
,
1528 _("finish_command: function has no target type"));
1530 if (TYPE_CODE (value_type
) != TYPE_CODE_VOID
)
1532 volatile struct gdb_exception ex
;
1535 func
= read_var_value (a
->function
, get_current_frame ());
1536 TRY_CATCH (ex
, RETURN_MASK_ALL
)
1538 /* print_return_value can throw an exception in some
1539 circumstances. We need to catch this so that we still
1540 delete the breakpoint. */
1541 print_return_value (func
, value_type
);
1544 exception_print (gdb_stdout
, ex
);
1548 /* We suppress normal call of normal_stop observer and do it
1549 here so that the *stopped notification includes the return
1551 if (bs
!= NULL
&& tp
->control
.proceed_to_finish
)
1552 observer_notify_normal_stop (bs
, 1 /* print frame */);
1555 delete_breakpoint (a
->breakpoint
);
1556 delete_longjmp_breakpoint (a
->thread
);
1560 finish_command_continuation_free_arg (void *arg
)
1565 /* finish_backward -- helper function for finish_command. */
1568 finish_backward (struct symbol
*function
)
1570 struct symtab_and_line sal
;
1571 struct thread_info
*tp
= inferior_thread ();
1573 CORE_ADDR func_addr
;
1575 pc
= get_frame_pc (get_current_frame ());
1577 if (find_pc_partial_function (pc
, NULL
, &func_addr
, NULL
) == 0)
1578 internal_error (__FILE__
, __LINE__
,
1579 _("Finish: couldn't find function."));
1581 sal
= find_pc_line (func_addr
, 0);
1583 tp
->control
.proceed_to_finish
= 1;
1584 /* Special case: if we're sitting at the function entry point,
1585 then all we need to do is take a reverse singlestep. We
1586 don't need to set a breakpoint, and indeed it would do us
1589 Note that this can only happen at frame #0, since there's
1590 no way that a function up the stack can have a return address
1591 that's equal to its entry point. */
1595 struct frame_info
*frame
= get_selected_frame (NULL
);
1596 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
1597 struct symtab_and_line sr_sal
;
1599 /* Set a step-resume at the function's entry point. Once that's
1600 hit, we'll do one more step backwards. */
1603 sr_sal
.pspace
= get_frame_program_space (frame
);
1604 insert_step_resume_breakpoint_at_sal (gdbarch
,
1605 sr_sal
, null_frame_id
);
1607 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
1611 /* We're almost there -- we just need to back up by one more
1613 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1614 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 1);
1618 /* finish_forward -- helper function for finish_command. */
1621 finish_forward (struct symbol
*function
, struct frame_info
*frame
)
1623 struct frame_id frame_id
= get_frame_id (frame
);
1624 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
1625 struct symtab_and_line sal
;
1626 struct thread_info
*tp
= inferior_thread ();
1627 struct breakpoint
*breakpoint
;
1628 struct cleanup
*old_chain
;
1629 struct finish_command_continuation_args
*cargs
;
1630 int thread
= tp
->num
;
1632 sal
= find_pc_line (get_frame_pc (frame
), 0);
1633 sal
.pc
= get_frame_pc (frame
);
1635 breakpoint
= set_momentary_breakpoint (gdbarch
, sal
,
1636 get_stack_frame_id (frame
),
1639 /* set_momentary_breakpoint invalidates FRAME. */
1642 old_chain
= make_cleanup_delete_breakpoint (breakpoint
);
1644 set_longjmp_breakpoint (tp
, frame_id
);
1645 make_cleanup (delete_longjmp_breakpoint_cleanup
, &thread
);
1647 /* We want stop_registers, please... */
1648 tp
->control
.proceed_to_finish
= 1;
1649 cargs
= xmalloc (sizeof (*cargs
));
1651 cargs
->thread
= thread
;
1652 cargs
->breakpoint
= breakpoint
;
1653 cargs
->function
= function
;
1654 add_continuation (tp
, finish_command_continuation
, cargs
,
1655 finish_command_continuation_free_arg
);
1656 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
1658 discard_cleanups (old_chain
);
1659 if (!target_can_async_p ())
1660 do_all_continuations (0);
1663 /* "finish": Set a temporary breakpoint at the place the selected
1664 frame will return to, then continue. */
1667 finish_command (char *arg
, int from_tty
)
1669 struct frame_info
*frame
;
1670 struct symbol
*function
;
1675 ensure_not_tfind_mode ();
1676 ensure_valid_thread ();
1677 ensure_not_running ();
1679 /* Find out whether we must run in the background. */
1681 async_exec
= strip_bg_char (&arg
);
1683 prepare_execution_command (¤t_target
, async_exec
);
1686 error (_("The \"finish\" command does not take any arguments."));
1688 frame
= get_prev_frame (get_selected_frame (_("No selected frame.")));
1690 error (_("\"finish\" not meaningful in the outermost frame."));
1692 clear_proceed_status ();
1694 /* Finishing from an inline frame is completely different. We don't
1695 try to show the "return value" - no way to locate it. So we do
1696 not need a completion. */
1697 if (get_frame_type (get_selected_frame (_("No selected frame.")))
1700 /* Claim we are stepping in the calling frame. An empty step
1701 range means that we will stop once we aren't in a function
1702 called by that frame. We don't use the magic "1" value for
1703 step_range_end, because then infrun will think this is nexti,
1704 and not step over the rest of this inlined function call. */
1705 struct thread_info
*tp
= inferior_thread ();
1706 struct symtab_and_line empty_sal
;
1708 init_sal (&empty_sal
);
1709 set_step_info (frame
, empty_sal
);
1710 tp
->control
.step_range_start
= get_frame_pc (frame
);
1711 tp
->control
.step_range_end
= tp
->control
.step_range_start
;
1712 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1714 /* Print info on the selected frame, including level number but not
1718 printf_filtered (_("Run till exit from "));
1719 print_stack_frame (get_selected_frame (NULL
), 1, LOCATION
, 0);
1722 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 1);
1726 /* Ignore TAILCALL_FRAME type frames, they were executed already before
1727 entering THISFRAME. */
1728 while (get_frame_type (frame
) == TAILCALL_FRAME
)
1729 frame
= get_prev_frame (frame
);
1731 /* Find the function we will return from. */
1733 function
= find_pc_function (get_frame_pc (get_selected_frame (NULL
)));
1735 /* Print info on the selected frame, including level number but not
1739 if (execution_direction
== EXEC_REVERSE
)
1740 printf_filtered (_("Run back to call of "));
1742 printf_filtered (_("Run till exit from "));
1744 print_stack_frame (get_selected_frame (NULL
), 1, LOCATION
, 0);
1747 if (execution_direction
== EXEC_REVERSE
)
1748 finish_backward (function
);
1750 finish_forward (function
, frame
);
1755 program_info (char *args
, int from_tty
)
1759 struct thread_info
*tp
;
1762 if (!target_has_execution
)
1764 printf_filtered (_("The program being debugged is not being run.\n"));
1769 ptid
= inferior_ptid
;
1772 struct target_waitstatus ws
;
1774 get_last_target_status (&ptid
, &ws
);
1777 if (ptid_equal (ptid
, null_ptid
) || is_exited (ptid
))
1778 error (_("Invalid selected thread."));
1779 else if (is_running (ptid
))
1780 error (_("Selected thread is running."));
1782 tp
= find_thread_ptid (ptid
);
1783 bs
= tp
->control
.stop_bpstat
;
1784 stat
= bpstat_num (&bs
, &num
);
1786 target_files_info ();
1787 printf_filtered (_("Program stopped at %s.\n"),
1788 paddress (target_gdbarch (), stop_pc
));
1789 if (tp
->control
.stop_step
)
1790 printf_filtered (_("It stopped after being stepped.\n"));
1793 /* There may be several breakpoints in the same place, so this
1794 isn't as strange as it seems. */
1799 printf_filtered (_("It stopped at a breakpoint "
1800 "that has since been deleted.\n"));
1803 printf_filtered (_("It stopped at breakpoint %d.\n"), num
);
1804 stat
= bpstat_num (&bs
, &num
);
1807 else if (tp
->suspend
.stop_signal
!= GDB_SIGNAL_0
)
1809 printf_filtered (_("It stopped with signal %s, %s.\n"),
1810 gdb_signal_to_name (tp
->suspend
.stop_signal
),
1811 gdb_signal_to_string (tp
->suspend
.stop_signal
));
1816 printf_filtered (_("Type \"info stack\" or \"info "
1817 "registers\" for more information.\n"));
1822 environment_info (char *var
, int from_tty
)
1826 char *val
= get_in_environ (current_inferior ()->environment
, var
);
1830 puts_filtered (var
);
1831 puts_filtered (" = ");
1832 puts_filtered (val
);
1833 puts_filtered ("\n");
1837 puts_filtered ("Environment variable \"");
1838 puts_filtered (var
);
1839 puts_filtered ("\" not defined.\n");
1844 char **vector
= environ_vector (current_inferior ()->environment
);
1848 puts_filtered (*vector
++);
1849 puts_filtered ("\n");
1855 set_environment_command (char *arg
, int from_tty
)
1857 char *p
, *val
, *var
;
1861 error_no_arg (_("environment variable and value"));
1863 /* Find seperation between variable name and value. */
1864 p
= (char *) strchr (arg
, '=');
1865 val
= (char *) strchr (arg
, ' ');
1867 if (p
!= 0 && val
!= 0)
1869 /* We have both a space and an equals. If the space is before the
1870 equals, walk forward over the spaces til we see a nonspace
1871 (possibly the equals). */
1876 /* Now if the = is after the char following the spaces,
1877 take the char following the spaces. */
1881 else if (val
!= 0 && p
== 0)
1885 error_no_arg (_("environment variable to set"));
1887 if (p
== 0 || p
[1] == 0)
1891 p
= arg
+ strlen (arg
); /* So that savestring below will work. */
1895 /* Not setting variable value to null. */
1897 while (*val
== ' ' || *val
== '\t')
1901 while (p
!= arg
&& (p
[-1] == ' ' || p
[-1] == '\t'))
1904 var
= savestring (arg
, p
- arg
);
1907 printf_filtered (_("Setting environment variable "
1908 "\"%s\" to null value.\n"),
1910 set_in_environ (current_inferior ()->environment
, var
, "");
1913 set_in_environ (current_inferior ()->environment
, var
, val
);
1918 unset_environment_command (char *var
, int from_tty
)
1922 /* If there is no argument, delete all environment variables.
1923 Ask for confirmation if reading from the terminal. */
1924 if (!from_tty
|| query (_("Delete all environment variables? ")))
1926 free_environ (current_inferior ()->environment
);
1927 current_inferior ()->environment
= make_environ ();
1931 unset_in_environ (current_inferior ()->environment
, var
);
1934 /* Handle the execution path (PATH variable). */
1936 static const char path_var_name
[] = "PATH";
1939 path_info (char *args
, int from_tty
)
1941 puts_filtered ("Executable and object file path: ");
1942 puts_filtered (get_in_environ (current_inferior ()->environment
,
1944 puts_filtered ("\n");
1947 /* Add zero or more directories to the front of the execution path. */
1950 path_command (char *dirname
, int from_tty
)
1956 env
= get_in_environ (current_inferior ()->environment
, path_var_name
);
1957 /* Can be null if path is not set. */
1960 exec_path
= xstrdup (env
);
1961 mod_path (dirname
, &exec_path
);
1962 set_in_environ (current_inferior ()->environment
, path_var_name
, exec_path
);
1965 path_info ((char *) NULL
, from_tty
);
1969 /* Print out the register NAME with value VAL, to FILE, in the default
1973 default_print_one_register_info (struct ui_file
*file
,
1977 struct type
*regtype
= value_type (val
);
1978 int print_raw_format
;
1980 fputs_filtered (name
, file
);
1981 print_spaces_filtered (15 - strlen (name
), file
);
1983 print_raw_format
= (value_entirely_available (val
)
1984 && !value_optimized_out (val
));
1986 /* If virtual format is floating, print it that way, and in raw
1988 if (TYPE_CODE (regtype
) == TYPE_CODE_FLT
1989 || TYPE_CODE (regtype
) == TYPE_CODE_DECFLOAT
)
1992 struct value_print_options opts
;
1993 const gdb_byte
*valaddr
= value_contents_for_printing (val
);
1994 enum bfd_endian byte_order
= gdbarch_byte_order (get_type_arch (regtype
));
1996 get_user_print_options (&opts
);
2000 value_contents_for_printing (val
),
2001 value_embedded_offset (val
), 0,
2002 file
, 0, val
, &opts
, current_language
);
2004 if (print_raw_format
)
2006 fprintf_filtered (file
, "\t(raw ");
2007 print_hex_chars (file
, valaddr
, TYPE_LENGTH (regtype
), byte_order
);
2008 fprintf_filtered (file
, ")");
2013 struct value_print_options opts
;
2015 /* Print the register in hex. */
2016 get_formatted_print_options (&opts
, 'x');
2019 value_contents_for_printing (val
),
2020 value_embedded_offset (val
), 0,
2021 file
, 0, val
, &opts
, current_language
);
2022 /* If not a vector register, print it also according to its
2024 if (print_raw_format
&& TYPE_VECTOR (regtype
) == 0)
2026 get_user_print_options (&opts
);
2028 fprintf_filtered (file
, "\t");
2030 value_contents_for_printing (val
),
2031 value_embedded_offset (val
), 0,
2032 file
, 0, val
, &opts
, current_language
);
2036 fprintf_filtered (file
, "\n");
2039 /* Print out the machine register regnum. If regnum is -1, print all
2040 registers (print_all == 1) or all non-float and non-vector
2041 registers (print_all == 0).
2043 For most machines, having all_registers_info() print the
2044 register(s) one per line is good enough. If a different format is
2045 required, (eg, for MIPS or Pyramid 90x, which both have lots of
2046 regs), or there is an existing convention for showing all the
2047 registers, define the architecture method PRINT_REGISTERS_INFO to
2048 provide that format. */
2051 default_print_registers_info (struct gdbarch
*gdbarch
,
2052 struct ui_file
*file
,
2053 struct frame_info
*frame
,
2054 int regnum
, int print_all
)
2057 const int numregs
= gdbarch_num_regs (gdbarch
)
2058 + gdbarch_num_pseudo_regs (gdbarch
);
2060 for (i
= 0; i
< numregs
; i
++)
2062 /* Decide between printing all regs, non-float / vector regs, or
2068 if (!gdbarch_register_reggroup_p (gdbarch
, i
, all_reggroup
))
2073 if (!gdbarch_register_reggroup_p (gdbarch
, i
, general_reggroup
))
2083 /* If the register name is empty, it is undefined for this
2084 processor, so don't display anything. */
2085 if (gdbarch_register_name (gdbarch
, i
) == NULL
2086 || *(gdbarch_register_name (gdbarch
, i
)) == '\0')
2089 default_print_one_register_info (file
,
2090 gdbarch_register_name (gdbarch
, i
),
2091 value_of_register (i
, frame
));
2096 registers_info (char *addr_exp
, int fpregs
)
2098 struct frame_info
*frame
;
2099 struct gdbarch
*gdbarch
;
2101 if (!target_has_registers
)
2102 error (_("The program has no registers now."));
2103 frame
= get_selected_frame (NULL
);
2104 gdbarch
= get_frame_arch (frame
);
2108 gdbarch_print_registers_info (gdbarch
, gdb_stdout
,
2113 while (*addr_exp
!= '\0')
2118 /* Skip leading white space. */
2119 addr_exp
= skip_spaces (addr_exp
);
2121 /* Discard any leading ``$''. Check that there is something
2122 resembling a register following it. */
2123 if (addr_exp
[0] == '$')
2125 if (isspace ((*addr_exp
)) || (*addr_exp
) == '\0')
2126 error (_("Missing register name"));
2128 /* Find the start/end of this register name/num/group. */
2130 while ((*addr_exp
) != '\0' && !isspace ((*addr_exp
)))
2134 /* Figure out what we've found and display it. */
2136 /* A register name? */
2138 int regnum
= user_reg_map_name_to_regnum (gdbarch
, start
, end
- start
);
2142 /* User registers lie completely outside of the range of
2143 normal registers. Catch them early so that the target
2145 if (regnum
>= gdbarch_num_regs (gdbarch
)
2146 + gdbarch_num_pseudo_regs (gdbarch
))
2148 struct value
*regval
= value_of_user_reg (regnum
, frame
);
2149 const char *regname
= user_reg_map_regnum_to_name (gdbarch
,
2152 /* Print in the same fashion
2153 gdbarch_print_registers_info's default
2154 implementation prints. */
2155 default_print_one_register_info (gdb_stdout
,
2160 gdbarch_print_registers_info (gdbarch
, gdb_stdout
,
2161 frame
, regnum
, fpregs
);
2166 /* A register group? */
2168 struct reggroup
*group
;
2170 for (group
= reggroup_next (gdbarch
, NULL
);
2172 group
= reggroup_next (gdbarch
, group
))
2174 /* Don't bother with a length check. Should the user
2175 enter a short register group name, go with the first
2176 group that matches. */
2177 if (strncmp (start
, reggroup_name (group
), end
- start
) == 0)
2185 regnum
< gdbarch_num_regs (gdbarch
)
2186 + gdbarch_num_pseudo_regs (gdbarch
);
2189 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, group
))
2190 gdbarch_print_registers_info (gdbarch
,
2198 /* Nothing matched. */
2199 error (_("Invalid register `%.*s'"), (int) (end
- start
), start
);
2204 all_registers_info (char *addr_exp
, int from_tty
)
2206 registers_info (addr_exp
, 1);
2210 nofp_registers_info (char *addr_exp
, int from_tty
)
2212 registers_info (addr_exp
, 0);
2216 print_vector_info (struct ui_file
*file
,
2217 struct frame_info
*frame
, const char *args
)
2219 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
2221 if (gdbarch_print_vector_info_p (gdbarch
))
2222 gdbarch_print_vector_info (gdbarch
, file
, frame
, args
);
2226 int printed_something
= 0;
2229 regnum
< gdbarch_num_regs (gdbarch
)
2230 + gdbarch_num_pseudo_regs (gdbarch
);
2233 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, vector_reggroup
))
2235 printed_something
= 1;
2236 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
2239 if (!printed_something
)
2240 fprintf_filtered (file
, "No vector information\n");
2245 vector_info (char *args
, int from_tty
)
2247 if (!target_has_registers
)
2248 error (_("The program has no registers now."));
2250 print_vector_info (gdb_stdout
, get_selected_frame (NULL
), args
);
2253 /* Kill the inferior process. Make us have no inferior. */
2256 kill_command (char *arg
, int from_tty
)
2258 /* FIXME: This should not really be inferior_ptid (or target_has_execution).
2259 It should be a distinct flag that indicates that a target is active, cuz
2260 some targets don't have processes! */
2262 if (ptid_equal (inferior_ptid
, null_ptid
))
2263 error (_("The program is not being run."));
2264 if (!query (_("Kill the program being debugged? ")))
2265 error (_("Not confirmed."));
2268 /* If we still have other inferiors to debug, then don't mess with
2269 with their threads. */
2270 if (!have_inferiors ())
2272 init_thread_list (); /* Destroy thread info. */
2274 /* Killing off the inferior can leave us with a core file. If
2275 so, print the state we are left in. */
2276 if (target_has_stack
)
2278 printf_filtered (_("In %s,\n"), target_longname
);
2279 print_stack_frame (get_selected_frame (NULL
), 1, SRC_AND_LOC
, 1);
2282 bfd_cache_close_all ();
2285 /* Used in `attach&' command. ARG is a point to an integer
2286 representing a process id. Proceed threads of this process iff
2287 they stopped due to debugger request, and when they did, they
2288 reported a clean stop (GDB_SIGNAL_0). Do not proceed threads
2289 that have been explicitly been told to stop. */
2292 proceed_after_attach_callback (struct thread_info
*thread
,
2295 int pid
= * (int *) arg
;
2297 if (ptid_get_pid (thread
->ptid
) == pid
2298 && !is_exited (thread
->ptid
)
2299 && !is_executing (thread
->ptid
)
2300 && !thread
->stop_requested
2301 && thread
->suspend
.stop_signal
== GDB_SIGNAL_0
)
2303 switch_to_thread (thread
->ptid
);
2304 clear_proceed_status ();
2305 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
2312 proceed_after_attach (int pid
)
2314 /* Don't error out if the current thread is running, because
2315 there may be other stopped threads. */
2316 struct cleanup
*old_chain
;
2318 /* Backup current thread and selected frame. */
2319 old_chain
= make_cleanup_restore_current_thread ();
2321 iterate_over_threads (proceed_after_attach_callback
, &pid
);
2323 /* Restore selected ptid. */
2324 do_cleanups (old_chain
);
2329 * Should save/restore the tty state since it might be that the
2330 * program to be debugged was started on this tty and it wants
2331 * the tty in some state other than what we want. If it's running
2332 * on another terminal or without a terminal, then saving and
2333 * restoring the tty state is a harmless no-op.
2334 * This only needs to be done if we are attaching to a process.
2337 /* attach_command --
2338 takes a program started up outside of gdb and ``attaches'' to it.
2339 This stops it cold in its tracks and allows us to start debugging it.
2340 and wait for the trace-trap that results from attaching. */
2343 attach_command_post_wait (char *args
, int from_tty
, int async_exec
)
2346 char *full_exec_path
= NULL
;
2347 struct inferior
*inferior
;
2349 inferior
= current_inferior ();
2350 inferior
->control
.stop_soon
= NO_STOP_QUIETLY
;
2352 /* If no exec file is yet known, try to determine it from the
2354 exec_file
= (char *) get_exec_file (0);
2357 exec_file
= target_pid_to_exec_file (ptid_get_pid (inferior_ptid
));
2360 /* It's possible we don't have a full path, but rather just a
2361 filename. Some targets, such as HP-UX, don't provide the
2364 Attempt to qualify the filename against the source path.
2365 (If that fails, we'll just fall back on the original
2366 filename. Not much more we can do...) */
2368 if (!source_full_path_of (exec_file
, &full_exec_path
))
2369 full_exec_path
= xstrdup (exec_file
);
2371 exec_file_attach (full_exec_path
, from_tty
);
2372 symbol_file_add_main (full_exec_path
, from_tty
);
2377 reopen_exec_file ();
2381 /* Take any necessary post-attaching actions for this platform. */
2382 target_post_attach (ptid_get_pid (inferior_ptid
));
2384 post_create_inferior (¤t_target
, from_tty
);
2386 /* Install inferior's terminal modes. */
2387 target_terminal_inferior ();
2391 /* The user requested an `attach&', so be sure to leave threads
2392 that didn't get a signal running. */
2394 /* Immediatelly resume all suspended threads of this inferior,
2395 and this inferior only. This should have no effect on
2396 already running threads. If a thread has been stopped with a
2397 signal, leave it be. */
2399 proceed_after_attach (inferior
->pid
);
2402 if (inferior_thread ()->suspend
.stop_signal
== GDB_SIGNAL_0
)
2404 clear_proceed_status ();
2405 proceed ((CORE_ADDR
) -1, GDB_SIGNAL_DEFAULT
, 0);
2411 /* The user requested a plain `attach', so be sure to leave
2412 the inferior stopped. */
2414 if (target_can_async_p ())
2415 async_enable_stdin ();
2417 /* At least the current thread is already stopped. */
2419 /* In all-stop, by definition, all threads have to be already
2420 stopped at this point. In non-stop, however, although the
2421 selected thread is stopped, others may still be executing.
2422 Be sure to explicitly stop all threads of the process. This
2423 should have no effect on already stopped threads. */
2425 target_stop (pid_to_ptid (inferior
->pid
));
2427 /* Tell the user/frontend where we're stopped. */
2429 if (deprecated_attach_hook
)
2430 deprecated_attach_hook ();
2434 struct attach_command_continuation_args
2442 attach_command_continuation (void *args
, int err
)
2444 struct attach_command_continuation_args
*a
= args
;
2449 attach_command_post_wait (a
->args
, a
->from_tty
, a
->async_exec
);
2453 attach_command_continuation_free_args (void *args
)
2455 struct attach_command_continuation_args
*a
= args
;
2462 attach_command (char *args
, int from_tty
)
2465 struct target_ops
*attach_target
;
2467 dont_repeat (); /* Not for the faint of heart */
2469 if (gdbarch_has_global_solist (target_gdbarch ()))
2470 /* Don't complain if all processes share the same symbol
2473 else if (target_has_execution
)
2475 if (query (_("A program is being debugged already. Kill it? ")))
2478 error (_("Not killed."));
2481 /* Clean up any leftovers from other runs. Some other things from
2482 this function should probably be moved into target_pre_inferior. */
2483 target_pre_inferior (from_tty
);
2486 async_exec
= strip_bg_char (&args
);
2488 attach_target
= find_attach_target ();
2490 prepare_execution_command (attach_target
, async_exec
);
2492 if (non_stop
&& !attach_target
->to_supports_non_stop (attach_target
))
2493 error (_("Cannot attach to this target in non-stop mode"));
2495 attach_target
->to_attach (attach_target
, args
, from_tty
);
2496 /* to_attach should push the target, so after this point we
2497 shouldn't refer to attach_target again. */
2498 attach_target
= NULL
;
2500 /* Set up the "saved terminal modes" of the inferior
2501 based on what modes we are starting it with. */
2502 target_terminal_init ();
2504 /* Set up execution context to know that we should return from
2505 wait_for_inferior as soon as the target reports a stop. */
2506 init_wait_for_inferior ();
2507 clear_proceed_status ();
2511 /* If we find that the current thread isn't stopped, explicitly
2512 do so now, because we're going to install breakpoints and
2516 /* The user requested an `attach&'; stop just one thread. */
2517 target_stop (inferior_ptid
);
2519 /* The user requested an `attach', so stop all threads of this
2521 target_stop (pid_to_ptid (ptid_get_pid (inferior_ptid
)));
2524 /* Some system don't generate traps when attaching to inferior.
2525 E.g. Mach 3 or GNU hurd. */
2526 if (!target_attach_no_wait
)
2528 struct inferior
*inferior
= current_inferior ();
2530 /* Careful here. See comments in inferior.h. Basically some
2531 OSes don't ignore SIGSTOPs on continue requests anymore. We
2532 need a way for handle_inferior_event to reset the stop_signal
2533 variable after an attach, and this is what
2534 STOP_QUIETLY_NO_SIGSTOP is for. */
2535 inferior
->control
.stop_soon
= STOP_QUIETLY_NO_SIGSTOP
;
2537 if (target_can_async_p ())
2539 /* sync_execution mode. Wait for stop. */
2540 struct attach_command_continuation_args
*a
;
2542 a
= xmalloc (sizeof (*a
));
2543 a
->args
= xstrdup (args
);
2544 a
->from_tty
= from_tty
;
2545 a
->async_exec
= async_exec
;
2546 add_inferior_continuation (attach_command_continuation
, a
,
2547 attach_command_continuation_free_args
);
2551 wait_for_inferior ();
2554 attach_command_post_wait (args
, from_tty
, async_exec
);
2557 /* We had just found out that the target was already attached to an
2558 inferior. PTID points at a thread of this new inferior, that is
2559 the most likely to be stopped right now, but not necessarily so.
2560 The new inferior is assumed to be already added to the inferior
2561 list at this point. If LEAVE_RUNNING, then leave the threads of
2562 this inferior running, except those we've explicitly seen reported
2566 notice_new_inferior (ptid_t ptid
, int leave_running
, int from_tty
)
2568 struct cleanup
* old_chain
;
2571 old_chain
= make_cleanup (null_cleanup
, NULL
);
2573 /* If in non-stop, leave threads as running as they were. If
2574 they're stopped for some reason other than us telling it to, the
2575 target reports a signal != GDB_SIGNAL_0. We don't try to
2576 resume threads with such a stop signal. */
2577 async_exec
= non_stop
;
2579 if (!ptid_equal (inferior_ptid
, null_ptid
))
2580 make_cleanup_restore_current_thread ();
2582 switch_to_thread (ptid
);
2584 /* When we "notice" a new inferior we need to do all the things we
2585 would normally do if we had just attached to it. */
2587 if (is_executing (inferior_ptid
))
2589 struct inferior
*inferior
= current_inferior ();
2591 /* We're going to install breakpoints, and poke at memory,
2592 ensure that the inferior is stopped for a moment while we do
2594 target_stop (inferior_ptid
);
2596 inferior
->control
.stop_soon
= STOP_QUIETLY_REMOTE
;
2598 /* Wait for stop before proceeding. */
2599 if (target_can_async_p ())
2601 struct attach_command_continuation_args
*a
;
2603 a
= xmalloc (sizeof (*a
));
2604 a
->args
= xstrdup ("");
2605 a
->from_tty
= from_tty
;
2606 a
->async_exec
= async_exec
;
2607 add_inferior_continuation (attach_command_continuation
, a
,
2608 attach_command_continuation_free_args
);
2610 do_cleanups (old_chain
);
2614 wait_for_inferior ();
2617 async_exec
= leave_running
;
2618 attach_command_post_wait ("" /* args */, from_tty
, async_exec
);
2620 do_cleanups (old_chain
);
2625 * takes a program previously attached to and detaches it.
2626 * The program resumes execution and will no longer stop
2627 * on signals, etc. We better not have left any breakpoints
2628 * in the program or it'll die when it hits one. For this
2629 * to work, it may be necessary for the process to have been
2630 * previously attached. It *might* work if the program was
2631 * started via the normal ptrace (PTRACE_TRACEME).
2635 detach_command (char *args
, int from_tty
)
2637 dont_repeat (); /* Not for the faint of heart. */
2639 if (ptid_equal (inferior_ptid
, null_ptid
))
2640 error (_("The program is not being run."));
2642 query_if_trace_running (from_tty
);
2644 disconnect_tracing ();
2646 target_detach (args
, from_tty
);
2648 /* If the solist is global across inferiors, don't clear it when we
2649 detach from a single inferior. */
2650 if (!gdbarch_has_global_solist (target_gdbarch ()))
2651 no_shared_libraries (NULL
, from_tty
);
2653 /* If we still have inferiors to debug, then don't mess with their
2655 if (!have_inferiors ())
2656 init_thread_list ();
2658 if (deprecated_detach_hook
)
2659 deprecated_detach_hook ();
2662 /* Disconnect from the current target without resuming it (leaving it
2663 waiting for a debugger).
2665 We'd better not have left any breakpoints in the program or the
2666 next debugger will get confused. Currently only supported for some
2667 remote targets, since the normal attach mechanisms don't work on
2668 stopped processes on some native platforms (e.g. GNU/Linux). */
2671 disconnect_command (char *args
, int from_tty
)
2673 dont_repeat (); /* Not for the faint of heart. */
2674 query_if_trace_running (from_tty
);
2675 disconnect_tracing ();
2676 target_disconnect (args
, from_tty
);
2677 no_shared_libraries (NULL
, from_tty
);
2678 init_thread_list ();
2679 if (deprecated_detach_hook
)
2680 deprecated_detach_hook ();
2684 interrupt_target_1 (int all_threads
)
2689 ptid
= minus_one_ptid
;
2691 ptid
= inferior_ptid
;
2694 /* Tag the thread as having been explicitly requested to stop, so
2695 other parts of gdb know not to resume this thread automatically,
2696 if it was stopped due to an internal event. Limit this to
2697 non-stop mode, as when debugging a multi-threaded application in
2698 all-stop mode, we will only get one stop event --- it's undefined
2699 which thread will report the event. */
2701 set_stop_requested (ptid
, 1);
2705 Stop the execution of the target while running in async mode, in
2706 the backgound. In all-stop, stop the whole process. In non-stop
2707 mode, stop the current thread only by default, or stop all threads
2708 if the `-a' switch is used. */
2711 interrupt_command (char *args
, int from_tty
)
2713 if (target_can_async_p ())
2715 int all_threads
= 0;
2717 dont_repeat (); /* Not for the faint of heart. */
2720 && strncmp (args
, "-a", sizeof ("-a") - 1) == 0)
2723 if (!non_stop
&& all_threads
)
2724 error (_("-a is meaningless in all-stop mode."));
2726 interrupt_target_1 (all_threads
);
2731 print_float_info (struct ui_file
*file
,
2732 struct frame_info
*frame
, const char *args
)
2734 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
2736 if (gdbarch_print_float_info_p (gdbarch
))
2737 gdbarch_print_float_info (gdbarch
, file
, frame
, args
);
2741 int printed_something
= 0;
2744 regnum
< gdbarch_num_regs (gdbarch
)
2745 + gdbarch_num_pseudo_regs (gdbarch
);
2748 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, float_reggroup
))
2750 printed_something
= 1;
2751 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
2754 if (!printed_something
)
2755 fprintf_filtered (file
, "No floating-point info "
2756 "available for this processor.\n");
2761 float_info (char *args
, int from_tty
)
2763 if (!target_has_registers
)
2764 error (_("The program has no registers now."));
2766 print_float_info (gdb_stdout
, get_selected_frame (NULL
), args
);
2770 unset_command (char *args
, int from_tty
)
2772 printf_filtered (_("\"unset\" must be followed by the "
2773 "name of an unset subcommand.\n"));
2774 help_list (unsetlist
, "unset ", -1, gdb_stdout
);
2777 /* Implement `info proc' family of commands. */
2780 info_proc_cmd_1 (char *args
, enum info_proc_what what
, int from_tty
)
2782 struct gdbarch
*gdbarch
= get_current_arch ();
2784 if (!target_info_proc (args
, what
))
2786 if (gdbarch_info_proc_p (gdbarch
))
2787 gdbarch_info_proc (gdbarch
, args
, what
);
2789 error (_("Not supported on this target."));
2793 /* Implement `info proc' when given without any futher parameters. */
2796 info_proc_cmd (char *args
, int from_tty
)
2798 info_proc_cmd_1 (args
, IP_MINIMAL
, from_tty
);
2801 /* Implement `info proc mappings'. */
2804 info_proc_cmd_mappings (char *args
, int from_tty
)
2806 info_proc_cmd_1 (args
, IP_MAPPINGS
, from_tty
);
2809 /* Implement `info proc stat'. */
2812 info_proc_cmd_stat (char *args
, int from_tty
)
2814 info_proc_cmd_1 (args
, IP_STAT
, from_tty
);
2817 /* Implement `info proc status'. */
2820 info_proc_cmd_status (char *args
, int from_tty
)
2822 info_proc_cmd_1 (args
, IP_STATUS
, from_tty
);
2825 /* Implement `info proc cwd'. */
2828 info_proc_cmd_cwd (char *args
, int from_tty
)
2830 info_proc_cmd_1 (args
, IP_CWD
, from_tty
);
2833 /* Implement `info proc cmdline'. */
2836 info_proc_cmd_cmdline (char *args
, int from_tty
)
2838 info_proc_cmd_1 (args
, IP_CMDLINE
, from_tty
);
2841 /* Implement `info proc exe'. */
2844 info_proc_cmd_exe (char *args
, int from_tty
)
2846 info_proc_cmd_1 (args
, IP_EXE
, from_tty
);
2849 /* Implement `info proc all'. */
2852 info_proc_cmd_all (char *args
, int from_tty
)
2854 info_proc_cmd_1 (args
, IP_ALL
, from_tty
);
2858 _initialize_infcmd (void)
2860 static struct cmd_list_element
*info_proc_cmdlist
;
2861 struct cmd_list_element
*c
= NULL
;
2862 const char *cmd_name
;
2864 /* Add the filename of the terminal connected to inferior I/O. */
2865 add_setshow_filename_cmd ("inferior-tty", class_run
,
2866 &inferior_io_terminal_scratch
, _("\
2867 Set terminal for future runs of program being debugged."), _("\
2868 Show terminal for future runs of program being debugged."), _("\
2869 Usage: set inferior-tty /dev/pts/1"),
2870 set_inferior_tty_command
,
2871 show_inferior_tty_command
,
2872 &setlist
, &showlist
);
2873 add_com_alias ("tty", "set inferior-tty", class_alias
, 0);
2876 add_setshow_string_noescape_cmd (cmd_name
, class_run
,
2877 &inferior_args_scratch
, _("\
2878 Set argument list to give program being debugged when it is started."), _("\
2879 Show argument list to give program being debugged when it is started."), _("\
2880 Follow this command with any number of args, to be passed to the program."),
2883 &setlist
, &showlist
);
2884 c
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
2885 gdb_assert (c
!= NULL
);
2886 set_cmd_completer (c
, filename_completer
);
2888 c
= add_cmd ("environment", no_class
, environment_info
, _("\
2889 The environment to give the program, or one variable's value.\n\
2890 With an argument VAR, prints the value of environment variable VAR to\n\
2891 give the program being debugged. With no arguments, prints the entire\n\
2892 environment to be given to the program."), &showlist
);
2893 set_cmd_completer (c
, noop_completer
);
2895 add_prefix_cmd ("unset", no_class
, unset_command
,
2896 _("Complement to certain \"set\" commands."),
2897 &unsetlist
, "unset ", 0, &cmdlist
);
2899 c
= add_cmd ("environment", class_run
, unset_environment_command
, _("\
2900 Cancel environment variable VAR for the program.\n\
2901 This does not affect the program until the next \"run\" command."),
2903 set_cmd_completer (c
, noop_completer
);
2905 c
= add_cmd ("environment", class_run
, set_environment_command
, _("\
2906 Set environment variable value to give the program.\n\
2907 Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\
2908 VALUES of environment variables are uninterpreted strings.\n\
2909 This does not affect the program until the next \"run\" command."),
2911 set_cmd_completer (c
, noop_completer
);
2913 c
= add_com ("path", class_files
, path_command
, _("\
2914 Add directory DIR(s) to beginning of search path for object files.\n\
2915 $cwd in the path means the current working directory.\n\
2916 This path is equivalent to the $PATH shell variable. It is a list of\n\
2917 directories, separated by colons. These directories are searched to find\n\
2918 fully linked executable files and separately compiled object files as \
2920 set_cmd_completer (c
, filename_completer
);
2922 c
= add_cmd ("paths", no_class
, path_info
, _("\
2923 Current search path for finding object files.\n\
2924 $cwd in the path means the current working directory.\n\
2925 This path is equivalent to the $PATH shell variable. It is a list of\n\
2926 directories, separated by colons. These directories are searched to find\n\
2927 fully linked executable files and separately compiled object files as \
2930 set_cmd_completer (c
, noop_completer
);
2932 add_prefix_cmd ("kill", class_run
, kill_command
,
2933 _("Kill execution of program being debugged."),
2934 &killlist
, "kill ", 0, &cmdlist
);
2936 add_com ("attach", class_run
, attach_command
, _("\
2937 Attach to a process or file outside of GDB.\n\
2938 This command attaches to another target, of the same type as your last\n\
2939 \"target\" command (\"info files\" will show your target stack).\n\
2940 The command may take as argument a process id or a device file.\n\
2941 For a process id, you must have permission to send the process a signal,\n\
2942 and it must have the same effective uid as the debugger.\n\
2943 When using \"attach\" with a process id, the debugger finds the\n\
2944 program running in the process, looking first in the current working\n\
2945 directory, or (if not found there) using the source file search path\n\
2946 (see the \"directory\" command). You can also use the \"file\" command\n\
2947 to specify the program, and to load its symbol table."));
2949 add_prefix_cmd ("detach", class_run
, detach_command
, _("\
2950 Detach a process or file previously attached.\n\
2951 If a process, it is no longer traced, and it continues its execution. If\n\
2952 you were debugging a file, the file is closed and gdb no longer accesses it."),
2953 &detachlist
, "detach ", 0, &cmdlist
);
2955 add_com ("disconnect", class_run
, disconnect_command
, _("\
2956 Disconnect from a target.\n\
2957 The target will wait for another debugger to connect. Not available for\n\
2960 c
= add_com ("signal", class_run
, signal_command
, _("\
2961 Continue program with the specified signal.\n\
2962 Usage: signal SIGNAL\n\
2963 The SIGNAL argument is processed the same as the handle command.\n\
2965 An argument of \"0\" means continue the program without sending it a signal.\n\
2966 This is useful in cases where the program stopped because of a signal,\n\
2967 and you want to resume the program while discarding the signal."));
2968 set_cmd_completer (c
, signal_completer
);
2970 add_com ("stepi", class_run
, stepi_command
, _("\
2971 Step one instruction exactly.\n\
2973 Argument N means step N times (or till program stops for another \
2975 add_com_alias ("si", "stepi", class_alias
, 0);
2977 add_com ("nexti", class_run
, nexti_command
, _("\
2978 Step one instruction, but proceed through subroutine calls.\n\
2980 Argument N means step N times (or till program stops for another \
2982 add_com_alias ("ni", "nexti", class_alias
, 0);
2984 add_com ("finish", class_run
, finish_command
, _("\
2985 Execute until selected stack frame returns.\n\
2987 Upon return, the value returned is printed and put in the value history."));
2988 add_com_alias ("fin", "finish", class_run
, 1);
2990 add_com ("next", class_run
, next_command
, _("\
2991 Step program, proceeding through subroutine calls.\n\
2993 Unlike \"step\", if the current source line calls a subroutine,\n\
2994 this command does not enter the subroutine, but instead steps over\n\
2995 the call, in effect treating it as a single source line."));
2996 add_com_alias ("n", "next", class_run
, 1);
2998 add_com_alias ("S", "next", class_run
, 1);
3000 add_com ("step", class_run
, step_command
, _("\
3001 Step program until it reaches a different source line.\n\
3003 Argument N means step N times (or till program stops for another \
3005 add_com_alias ("s", "step", class_run
, 1);
3007 c
= add_com ("until", class_run
, until_command
, _("\
3008 Execute until the program reaches a source line greater than the current\n\
3009 or a specified location (same args as break command) within the current \
3011 set_cmd_completer (c
, location_completer
);
3012 add_com_alias ("u", "until", class_run
, 1);
3014 c
= add_com ("advance", class_run
, advance_command
, _("\
3015 Continue the program up to the given location (same form as args for break \
3017 Execution will also stop upon exit from the current stack frame."));
3018 set_cmd_completer (c
, location_completer
);
3020 c
= add_com ("jump", class_run
, jump_command
, _("\
3021 Continue program being debugged at specified line or address.\n\
3022 Usage: jump <location>\n\
3023 Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\
3024 for an address to start at."));
3025 set_cmd_completer (c
, location_completer
);
3026 add_com_alias ("j", "jump", class_run
, 1);
3030 c
= add_com ("go", class_run
, go_command
, _("\
3031 Usage: go <location>\n\
3032 Continue program being debugged, stopping at specified line or \n\
3034 Give as argument either LINENUM or *ADDR, where ADDR is an \n\
3035 expression for an address to start at.\n\
3036 This command is a combination of tbreak and jump."));
3037 set_cmd_completer (c
, location_completer
);
3041 add_com_alias ("g", "go", class_run
, 1);
3043 add_com ("continue", class_run
, continue_command
, _("\
3044 Continue program being debugged, after signal or breakpoint.\n\
3045 Usage: continue [N]\n\
3046 If proceeding from breakpoint, a number N may be used as an argument,\n\
3047 which means to set the ignore count of that breakpoint to N - 1 (so that\n\
3048 the breakpoint won't break until the Nth time it is reached).\n\
3050 If non-stop mode is enabled, continue only the current thread,\n\
3051 otherwise all the threads in the program are continued. To \n\
3052 continue all stopped threads in non-stop mode, use the -a option.\n\
3053 Specifying -a and an ignore count simultaneously is an error."));
3054 add_com_alias ("c", "cont", class_run
, 1);
3055 add_com_alias ("fg", "cont", class_run
, 1);
3057 c
= add_com ("run", class_run
, run_command
, _("\
3058 Start debugged program. You may specify arguments to give it.\n\
3059 Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\
3060 Input and output redirection with \">\", \"<\", or \">>\" are also \
3062 With no arguments, uses arguments last specified (with \"run\" \
3063 or \"set args\").\n\
3064 To cancel previous arguments and run with no arguments,\n\
3065 use \"set args\" without arguments."));
3066 set_cmd_completer (c
, filename_completer
);
3067 add_com_alias ("r", "run", class_run
, 1);
3069 add_com ("R", class_run
, run_no_args_command
,
3070 _("Start debugged program with no arguments."));
3072 c
= add_com ("start", class_run
, start_command
, _("\
3073 Run the debugged program until the beginning of the main procedure.\n\
3074 You may specify arguments to give to your program, just as with the\n\
3075 \"run\" command."));
3076 set_cmd_completer (c
, filename_completer
);
3078 add_com ("interrupt", class_run
, interrupt_command
,
3079 _("Interrupt the execution of the debugged program.\n\
3080 If non-stop mode is enabled, interrupt only the current thread,\n\
3081 otherwise all the threads in the program are stopped. To \n\
3082 interrupt all running threads in non-stop mode, use the -a option."));
3084 add_info ("registers", nofp_registers_info
, _("\
3085 List of integer registers and their contents, for selected stack frame.\n\
3086 Register name as argument means describe only that register."));
3087 add_info_alias ("r", "registers", 1);
3090 add_com ("lr", class_info
, nofp_registers_info
, _("\
3091 List of integer registers and their contents, for selected stack frame.\n\
3092 Register name as argument means describe only that register."));
3093 add_info ("all-registers", all_registers_info
, _("\
3094 List of all registers and their contents, for selected stack frame.\n\
3095 Register name as argument means describe only that register."));
3097 add_info ("program", program_info
,
3098 _("Execution status of the program."));
3100 add_info ("float", float_info
,
3101 _("Print the status of the floating point unit\n"));
3103 add_info ("vector", vector_info
,
3104 _("Print the status of the vector unit\n"));
3106 add_prefix_cmd ("proc", class_info
, info_proc_cmd
,
3108 Show /proc process information about any running process.\n\
3109 Specify any process id, or use the program being debugged by default."),
3110 &info_proc_cmdlist
, "info proc ",
3111 1/*allow-unknown*/, &infolist
);
3113 add_cmd ("mappings", class_info
, info_proc_cmd_mappings
, _("\
3114 List of mapped memory regions."),
3115 &info_proc_cmdlist
);
3117 add_cmd ("stat", class_info
, info_proc_cmd_stat
, _("\
3118 List process info from /proc/PID/stat."),
3119 &info_proc_cmdlist
);
3121 add_cmd ("status", class_info
, info_proc_cmd_status
, _("\
3122 List process info from /proc/PID/status."),
3123 &info_proc_cmdlist
);
3125 add_cmd ("cwd", class_info
, info_proc_cmd_cwd
, _("\
3126 List current working directory of the process."),
3127 &info_proc_cmdlist
);
3129 add_cmd ("cmdline", class_info
, info_proc_cmd_cmdline
, _("\
3130 List command line arguments of the process."),
3131 &info_proc_cmdlist
);
3133 add_cmd ("exe", class_info
, info_proc_cmd_exe
, _("\
3134 List absolute filename for executable of the process."),
3135 &info_proc_cmdlist
);
3137 add_cmd ("all", class_info
, info_proc_cmd_all
, _("\
3138 List all available /proc info."),
3139 &info_proc_cmdlist
);