1 /* Memory-access and commands for "inferior" process, for GDB.
3 Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
4 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
5 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
23 #include "arch-utils.h"
25 #include "gdb_string.h"
39 #include "completer.h"
41 #include "event-top.h"
42 #include "parser-defs.h"
44 #include "reggroups.h"
48 #include "gdb_assert.h"
50 #include "target-descriptions.h"
51 #include "user-regs.h"
52 #include "exceptions.h"
53 #include "cli/cli-decode.h"
54 #include "gdbthread.h"
56 #include "inline-frame.h"
57 #include "tracepoint.h"
60 /* Functions exported for general use, in inferior.h: */
62 void all_registers_info (char *, int);
64 void registers_info (char *, int);
66 void nexti_command (char *, int);
68 void stepi_command (char *, int);
70 void continue_command (char *, int);
72 void interrupt_target_command (char *args
, int from_tty
);
74 /* Local functions: */
76 static void nofp_registers_info (char *, int);
78 static void print_return_value (struct type
*func_type
,
79 struct type
*value_type
);
81 static void until_next_command (int);
83 static void until_command (char *, int);
85 static void path_info (char *, int);
87 static void path_command (char *, int);
89 static void unset_command (char *, int);
91 static void float_info (char *, int);
93 static void disconnect_command (char *, int);
95 static void unset_environment_command (char *, int);
97 static void set_environment_command (char *, int);
99 static void environment_info (char *, int);
101 static void program_info (char *, int);
103 static void finish_command (char *, int);
105 static void signal_command (char *, int);
107 static void jump_command (char *, int);
109 static void step_1 (int, int, char *);
110 static void step_once (int skip_subroutines
, int single_inst
,
111 int count
, int thread
);
113 static void next_command (char *, int);
115 static void step_command (char *, int);
117 static void run_command (char *, int);
119 static void run_no_args_command (char *args
, int from_tty
);
121 static void go_command (char *line_no
, int from_tty
);
123 static int strip_bg_char (char **);
125 void _initialize_infcmd (void);
127 #define ERROR_NO_INFERIOR \
128 if (!target_has_execution) error (_("The program is not being run."));
130 /* Scratch area where string containing arguments to give to the
131 program will be stored by 'set args'. As soon as anything is
132 stored, notice_args_set will move it into per-inferior storage.
133 Arguments are separated by spaces. Empty string (pointer to '\0')
136 static char *inferior_args_scratch
;
138 /* Scratch area where 'set inferior-tty' will store user-provided value.
139 We'll immediate copy it into per-inferior storage. */
141 static char *inferior_io_terminal_scratch
;
143 /* Pid of our debugged inferior, or 0 if no inferior now.
144 Since various parts of infrun.c test this to see whether there is a program
145 being debugged it should be nonzero (currently 3 is used) for remote
148 ptid_t inferior_ptid
;
150 /* Address at which inferior stopped. */
154 /* Flag indicating that a command has proceeded the inferior past the
155 current breakpoint. */
157 int breakpoint_proceeded
;
159 /* Nonzero if stopped due to completion of a stack dummy routine. */
161 enum stop_stack_kind stop_stack_dummy
;
163 /* Nonzero if stopped due to a random (unexpected) signal in inferior
166 int stopped_by_random_signal
;
169 /* Accessor routines. */
171 /* Set the io terminal for the current inferior. Ownership of
172 TERMINAL_NAME is not transferred. */
175 set_inferior_io_terminal (const char *terminal_name
)
177 xfree (current_inferior ()->terminal
);
178 current_inferior ()->terminal
= terminal_name
? xstrdup (terminal_name
) : 0;
182 get_inferior_io_terminal (void)
184 return current_inferior ()->terminal
;
188 set_inferior_tty_command (char *args
, int from_tty
,
189 struct cmd_list_element
*c
)
191 /* CLI has assigned the user-provided value to inferior_io_terminal_scratch.
192 Now route it to current inferior. */
193 set_inferior_io_terminal (inferior_io_terminal_scratch
);
197 show_inferior_tty_command (struct ui_file
*file
, int from_tty
,
198 struct cmd_list_element
*c
, const char *value
)
200 /* Note that we ignore the passed-in value in favor of computing it
202 const char *inferior_io_terminal
= get_inferior_io_terminal ();
204 if (inferior_io_terminal
== NULL
)
205 inferior_io_terminal
= "";
206 fprintf_filtered (gdb_stdout
,
207 _("Terminal for future runs of program being debugged "
208 "is \"%s\".\n"), inferior_io_terminal
);
212 get_inferior_args (void)
214 if (current_inferior ()->argc
!= 0)
218 n
= construct_inferior_arguments (current_inferior ()->argc
,
219 current_inferior ()->argv
);
220 set_inferior_args (n
);
224 if (current_inferior ()->args
== NULL
)
225 current_inferior ()->args
= xstrdup ("");
227 return current_inferior ()->args
;
230 /* Set the arguments for the current inferior. Ownership of
231 NEWARGS is not transferred. */
234 set_inferior_args (char *newargs
)
236 xfree (current_inferior ()->args
);
237 current_inferior ()->args
= newargs
? xstrdup (newargs
) : NULL
;
238 current_inferior ()->argc
= 0;
239 current_inferior ()->argv
= 0;
243 set_inferior_args_vector (int argc
, char **argv
)
245 current_inferior ()->argc
= argc
;
246 current_inferior ()->argv
= argv
;
249 /* Notice when `set args' is run. */
251 set_args_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
253 /* CLI has assigned the user-provided value to inferior_args_scratch.
254 Now route it to current inferior. */
255 set_inferior_args (inferior_args_scratch
);
258 /* Notice when `show args' is run. */
260 show_args_command (struct ui_file
*file
, int from_tty
,
261 struct cmd_list_element
*c
, const char *value
)
263 /* Note that we ignore the passed-in value in favor of computing it
265 deprecated_show_value_hack (file
, from_tty
, c
, get_inferior_args ());
269 /* Compute command-line string given argument vector. This does the
270 same shell processing as fork_inferior. */
272 construct_inferior_arguments (int argc
, char **argv
)
276 if (STARTUP_WITH_SHELL
)
278 /* This holds all the characters considered special to the
279 typical Unix shells. We include `^' because the SunOS
280 /bin/sh treats it as a synonym for `|'. */
281 char *special
= "\"!#$&*()\\|[]{}<>?'\"`~^; \t\n";
286 /* We over-compute the size. It shouldn't matter. */
287 for (i
= 0; i
< argc
; ++i
)
288 length
+= 3 * strlen (argv
[i
]) + 1 + 2 * (argv
[i
][0] == '\0');
290 result
= (char *) xmalloc (length
);
293 for (i
= 0; i
< argc
; ++i
)
298 /* Need to handle empty arguments specially. */
299 if (argv
[i
][0] == '\0')
306 for (cp
= argv
[i
]; *cp
; ++cp
)
310 /* A newline cannot be quoted with a backslash (it
311 just disappears), only by putting it inside
319 if (strchr (special
, *cp
) != NULL
)
330 /* In this case we can't handle arguments that contain spaces,
331 tabs, or newlines -- see breakup_args(). */
335 for (i
= 0; i
< argc
; ++i
)
337 char *cp
= strchr (argv
[i
], ' ');
339 cp
= strchr (argv
[i
], '\t');
341 cp
= strchr (argv
[i
], '\n');
343 error (_("can't handle command-line "
344 "argument containing whitespace"));
345 length
+= strlen (argv
[i
]) + 1;
348 result
= (char *) xmalloc (length
);
350 for (i
= 0; i
< argc
; ++i
)
353 strcat (result
, " ");
354 strcat (result
, argv
[i
]);
362 /* This function detects whether or not a '&' character (indicating
363 background execution) has been added as *the last* of the arguments ARGS
364 of a command. If it has, it removes it and returns 1. Otherwise it
365 does nothing and returns 0. */
367 strip_bg_char (char **args
)
371 p
= strchr (*args
, '&');
375 if (p
== (*args
+ strlen (*args
) - 1))
377 if (strlen (*args
) > 1)
381 while (*p
== ' ' || *p
== '\t');
392 /* Common actions to take after creating any sort of inferior, by any
393 means (running, attaching, connecting, et cetera). The target
394 should be stopped. */
397 post_create_inferior (struct target_ops
*target
, int from_tty
)
399 volatile struct gdb_exception ex
;
401 /* Be sure we own the terminal in case write operations are performed. */
402 target_terminal_ours ();
404 /* If the target hasn't taken care of this already, do it now.
405 Targets which need to access registers during to_open,
406 to_create_inferior, or to_attach should do it earlier; but many
408 target_find_description ();
410 /* Now that we know the register layout, retrieve current PC. But
411 if the PC is unavailable (e.g., we're opening a core file with
412 missing registers info), ignore it. */
414 TRY_CATCH (ex
, RETURN_MASK_ERROR
)
416 stop_pc
= regcache_read_pc (get_current_regcache ());
418 if (ex
.reason
< 0 && ex
.error
!= NOT_AVAILABLE_ERROR
)
419 throw_exception (ex
);
423 /* Create the hooks to handle shared library load and unload
425 #ifdef SOLIB_CREATE_INFERIOR_HOOK
426 SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid
));
428 solib_create_inferior_hook (from_tty
);
432 /* If the solist is global across processes, there's no need to
434 if (exec_bfd
&& !gdbarch_has_global_solist (target_gdbarch
))
436 /* Sometimes the platform-specific hook loads initial shared
437 libraries, and sometimes it doesn't. If it doesn't FROM_TTY will be
438 incorrectly 0 but such solib targets should be fixed anyway. If we
439 made all the inferior hook methods consistent, this call could be
440 removed. Call it only after the solib target has been initialized by
441 solib_create_inferior_hook. */
444 SOLIB_ADD (NULL
, 0, target
, auto_solib_add
);
446 solib_add (NULL
, 0, target
, auto_solib_add
);
450 /* If the user sets watchpoints before execution having started,
451 then she gets software watchpoints, because GDB can't know which
452 target will end up being pushed, or if it supports hardware
453 watchpoints or not. breakpoint_re_set takes care of promoting
454 watchpoints to hardware watchpoints if possible, however, if this
455 new inferior doesn't load shared libraries or we don't pull in
456 symbols from any other source on this target/arch,
457 breakpoint_re_set is never called. Call it now so that software
458 watchpoints get a chance to be promoted to hardware watchpoints
459 if the now pushed target supports hardware watchpoints. */
460 breakpoint_re_set ();
462 observer_notify_inferior_created (target
, from_tty
);
465 /* Kill the inferior if already running. This function is designed
466 to be called when we are about to start the execution of the program
467 from the beginning. Ask the user to confirm that he wants to restart
468 the program being debugged when FROM_TTY is non-null. */
471 kill_if_already_running (int from_tty
)
473 if (! ptid_equal (inferior_ptid
, null_ptid
) && target_has_execution
)
475 /* Bail out before killing the program if we will not be able to
477 target_require_runnable ();
480 && !query (_("The program being debugged has been started already.\n\
481 Start it from the beginning? ")))
482 error (_("Program not restarted."));
487 /* Implement the "run" command. If TBREAK_AT_MAIN is set, then insert
488 a temporary breakpoint at the begining of the main program before
489 running the program. */
492 run_command_1 (char *args
, int from_tty
, int tbreak_at_main
)
495 struct cleanup
*old_chain
;
500 kill_if_already_running (from_tty
);
502 init_wait_for_inferior ();
503 clear_breakpoint_hit_counts ();
505 /* Clean up any leftovers from other runs. Some other things from
506 this function should probably be moved into target_pre_inferior. */
507 target_pre_inferior (from_tty
);
509 /* The comment here used to read, "The exec file is re-read every
510 time we do a generic_mourn_inferior, so we just have to worry
511 about the symbol file." The `generic_mourn_inferior' function
512 gets called whenever the program exits. However, suppose the
513 program exits, and *then* the executable file changes? We need
514 to check again here. Since reopen_exec_file doesn't do anything
515 if the timestamp hasn't changed, I don't see the harm. */
519 /* Insert the temporary breakpoint if a location was specified. */
521 tbreak_command (main_name (), 0);
523 exec_file
= (char *) get_exec_file (0);
525 if (non_stop
&& !target_supports_non_stop ())
526 error (_("The target does not support running in non-stop mode."));
528 /* We keep symbols from add-symbol-file, on the grounds that the
529 user might want to add some symbols before running the program
530 (right?). But sometimes (dynamic loading where the user manually
531 introduces the new symbols with add-symbol-file), the code which
532 the symbols describe does not persist between runs. Currently
533 the user has to manually nuke all symbols between runs if they
534 want them to go away (PR 2207). This is probably reasonable. */
538 if (target_can_async_p ())
539 async_disable_stdin ();
543 int async_exec
= strip_bg_char (&args
);
545 /* If we get a request for running in the bg but the target
546 doesn't support it, error out. */
547 if (async_exec
&& !target_can_async_p ())
548 error (_("Asynchronous execution not supported on this target."));
550 /* If we don't get a request of running in the bg, then we need
551 to simulate synchronous (fg) execution. */
552 if (!async_exec
&& target_can_async_p ())
554 /* Simulate synchronous execution. */
555 async_disable_stdin ();
558 /* If there were other args, beside '&', process them. */
560 set_inferior_args (args
);
565 ui_out_field_string (uiout
, NULL
, "Starting program");
566 ui_out_text (uiout
, ": ");
568 ui_out_field_string (uiout
, "execfile", exec_file
);
569 ui_out_spaces (uiout
, 1);
570 /* We call get_inferior_args() because we might need to compute
572 ui_out_field_string (uiout
, "infargs", get_inferior_args ());
573 ui_out_text (uiout
, "\n");
574 ui_out_flush (uiout
);
577 /* We call get_inferior_args() because we might need to compute
579 target_create_inferior (exec_file
, get_inferior_args (),
580 environ_vector (current_inferior ()->environment
),
583 /* We're starting off a new process. When we get out of here, in
584 non-stop mode, finish the state of all threads of that process,
585 but leave other threads alone, as they may be stopped in internal
586 events --- the frontend shouldn't see them as stopped. In
587 all-stop, always finish the state of all threads, as we may be
588 resuming more than just the new process. */
590 ptid
= pid_to_ptid (ptid_get_pid (inferior_ptid
));
592 ptid
= minus_one_ptid
;
593 old_chain
= make_cleanup (finish_thread_state_cleanup
, &ptid
);
595 /* Pass zero for FROM_TTY, because at this point the "run" command
596 has done its thing; now we are setting up the running program. */
597 post_create_inferior (¤t_target
, 0);
599 /* Start the target running. Do not use -1 continuation as it would skip
600 breakpoint right at the entry point. */
601 proceed (regcache_read_pc (get_current_regcache ()), TARGET_SIGNAL_0
, 0);
603 /* Since there was no error, there's no need to finish the thread
605 discard_cleanups (old_chain
);
609 run_command (char *args
, int from_tty
)
611 run_command_1 (args
, from_tty
, 0);
615 run_no_args_command (char *args
, int from_tty
)
617 set_inferior_args ("");
621 /* Start the execution of the program up until the beginning of the main
625 start_command (char *args
, int from_tty
)
627 /* Some languages such as Ada need to search inside the program
628 minimal symbols for the location where to put the temporary
629 breakpoint before starting. */
630 if (!have_minimal_symbols ())
631 error (_("No symbol table loaded. Use the \"file\" command."));
633 /* Run the program until reaching the main procedure... */
634 run_command_1 (args
, from_tty
, 1);
638 proceed_thread_callback (struct thread_info
*thread
, void *arg
)
640 /* We go through all threads individually instead of compressing
641 into a single target `resume_all' request, because some threads
642 may be stopped in internal breakpoints/events, or stopped waiting
643 for its turn in the displaced stepping queue (that is, they are
644 running && !executing). The target side has no idea about why
645 the thread is stopped, so a `resume_all' command would resume too
646 much. If/when GDB gains a way to tell the target `hold this
647 thread stopped until I say otherwise', then we can optimize
649 if (!is_stopped (thread
->ptid
))
652 switch_to_thread (thread
->ptid
);
653 clear_proceed_status ();
654 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
659 ensure_valid_thread (void)
661 if (ptid_equal (inferior_ptid
, null_ptid
)
662 || is_exited (inferior_ptid
))
663 error (_("Cannot execute this command without a live selected thread."));
666 /* If the user is looking at trace frames, any resumption of execution
667 is likely to mix up recorded and live target data. So simply
668 disallow those commands. */
671 ensure_not_tfind_mode (void)
673 if (get_traceframe_number () >= 0)
674 error (_("Cannot execute this command while looking at trace frames."));
678 continue_1 (int all_threads
)
681 ensure_not_tfind_mode ();
683 if (non_stop
&& all_threads
)
685 /* Don't error out if the current thread is running, because
686 there may be other stopped threads. */
687 struct cleanup
*old_chain
;
689 /* Backup current thread and selected frame. */
690 old_chain
= make_cleanup_restore_current_thread ();
692 iterate_over_threads (proceed_thread_callback
, NULL
);
694 /* Restore selected ptid. */
695 do_cleanups (old_chain
);
699 ensure_valid_thread ();
700 ensure_not_running ();
701 clear_proceed_status ();
702 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
706 /* continue [-a] [proceed-count] [&] */
708 continue_command (char *args
, int from_tty
)
714 /* Find out whether we must run in the background. */
716 async_exec
= strip_bg_char (&args
);
718 /* If we must run in the background, but the target can't do it,
720 if (async_exec
&& !target_can_async_p ())
721 error (_("Asynchronous execution not supported on this target."));
723 /* If we are not asked to run in the bg, then prepare to run in the
724 foreground, synchronously. */
725 if (!async_exec
&& target_can_async_p ())
727 /* Simulate synchronous execution. */
728 async_disable_stdin ();
733 if (strncmp (args
, "-a", sizeof ("-a") - 1) == 0)
736 args
+= sizeof ("-a") - 1;
742 if (!non_stop
&& all_threads
)
743 error (_("`-a' is meaningless in all-stop mode."));
745 if (args
!= NULL
&& all_threads
)
746 error (_("Can't resume all threads and specify "
747 "proceed count simultaneously."));
749 /* If we have an argument left, set proceed count of breakpoint we
756 struct thread_info
*tp
;
759 tp
= find_thread_ptid (inferior_ptid
);
763 struct target_waitstatus ws
;
765 get_last_target_status (&last_ptid
, &ws
);
766 tp
= find_thread_ptid (last_ptid
);
769 bs
= tp
->control
.stop_bpstat
;
771 while ((stat
= bpstat_num (&bs
, &num
)) != 0)
774 set_ignore_count (num
,
775 parse_and_eval_long (args
) - 1,
777 /* set_ignore_count prints a message ending with a period.
778 So print two spaces before "Continuing.". */
780 printf_filtered (" ");
784 if (!stopped
&& from_tty
)
787 ("Not stopped at any breakpoint; argument ignored.\n");
792 printf_filtered (_("Continuing.\n"));
794 continue_1 (all_threads
);
797 /* Record the starting point of a "step" or "next" command. */
800 set_step_frame (void)
802 struct symtab_and_line sal
;
804 find_frame_sal (get_current_frame (), &sal
);
805 set_step_info (get_current_frame (), sal
);
808 /* Step until outside of current statement. */
811 step_command (char *count_string
, int from_tty
)
813 step_1 (0, 0, count_string
);
816 /* Likewise, but skip over subroutine calls as if single instructions. */
819 next_command (char *count_string
, int from_tty
)
821 step_1 (1, 0, count_string
);
824 /* Likewise, but step only one instruction. */
827 stepi_command (char *count_string
, int from_tty
)
829 step_1 (0, 1, count_string
);
833 nexti_command (char *count_string
, int from_tty
)
835 step_1 (1, 1, count_string
);
839 delete_longjmp_breakpoint_cleanup (void *arg
)
841 int thread
= * (int *) arg
;
842 delete_longjmp_breakpoint (thread
);
846 step_1 (int skip_subroutines
, int single_inst
, char *count_string
)
849 struct cleanup
*cleanups
= make_cleanup (null_cleanup
, NULL
);
854 ensure_not_tfind_mode ();
855 ensure_valid_thread ();
856 ensure_not_running ();
859 async_exec
= strip_bg_char (&count_string
);
861 /* If we get a request for running in the bg but the target
862 doesn't support it, error out. */
863 if (async_exec
&& !target_can_async_p ())
864 error (_("Asynchronous execution not supported on this target."));
866 /* If we don't get a request of running in the bg, then we need
867 to simulate synchronous (fg) execution. */
868 if (!async_exec
&& target_can_async_p ())
870 /* Simulate synchronous execution. */
871 async_disable_stdin ();
874 count
= count_string
? parse_and_eval_long (count_string
) : 1;
876 if (!single_inst
|| skip_subroutines
) /* Leave si command alone. */
878 struct thread_info
*tp
= inferior_thread ();
880 if (in_thread_list (inferior_ptid
))
881 thread
= pid_to_thread_id (inferior_ptid
);
883 set_longjmp_breakpoint (tp
, get_frame_id (get_current_frame ()));
885 make_cleanup (delete_longjmp_breakpoint_cleanup
, &thread
);
888 /* In synchronous case, all is well; each step_once call will step once. */
889 if (!target_can_async_p ())
891 for (; count
> 0; count
--)
893 step_once (skip_subroutines
, single_inst
, count
, thread
);
895 if (!target_has_execution
)
899 struct thread_info
*tp
= inferior_thread ();
901 if (!tp
->control
.stop_step
|| !tp
->step_multi
)
903 /* If we stopped for some reason that is not stepping
904 there are no further steps to make. */
911 do_cleanups (cleanups
);
915 /* In the case of an asynchronous target things get complicated;
916 do only one step for now, before returning control to the
917 event loop. Let the continuation figure out how many other
918 steps we need to do, and handle them one at the time, through
920 step_once (skip_subroutines
, single_inst
, count
, thread
);
922 /* We are running, and the continuation is installed. It will
923 disable the longjmp breakpoint as appropriate. */
924 discard_cleanups (cleanups
);
928 struct step_1_continuation_args
931 int skip_subroutines
;
936 /* Called after we are done with one step operation, to check whether
937 we need to step again, before we print the prompt and return control
938 to the user. If count is > 1, we will need to do one more call to
939 proceed(), via step_once(). Basically it is like step_once and
940 step_1_continuation are co-recursive. */
942 step_1_continuation (void *args
)
944 struct step_1_continuation_args
*a
= args
;
946 if (target_has_execution
)
948 struct thread_info
*tp
;
950 tp
= inferior_thread ();
951 if (tp
->step_multi
&& tp
->control
.stop_step
)
953 /* There are more steps to make, and we did stop due to
954 ending a stepping range. Do another step. */
955 step_once (a
->skip_subroutines
, a
->single_inst
,
956 a
->count
- 1, a
->thread
);
962 /* We either stopped for some reason that is not stepping, or there
963 are no further steps to make. Cleanup. */
964 if (!a
->single_inst
|| a
->skip_subroutines
)
965 delete_longjmp_breakpoint (a
->thread
);
968 /* Do just one step operation. This is useful to implement the 'step
969 n' kind of commands. In case of asynchronous targets, we will have
970 to set up a continuation to be done after the target stops (after
971 this one step). For synch targets, the caller handles further
975 step_once (int skip_subroutines
, int single_inst
, int count
, int thread
)
977 struct frame_info
*frame
= get_current_frame ();
981 /* Don't assume THREAD is a valid thread id. It is set to -1 if
982 the longjmp breakpoint was not required. Use the
983 INFERIOR_PTID thread instead, which is the same thread when
985 struct thread_info
*tp
= inferior_thread ();
987 clear_proceed_status ();
994 /* Step at an inlined function behaves like "down". */
995 if (!skip_subroutines
&& !single_inst
996 && inline_skipped_frames (inferior_ptid
))
1000 /* Pretend that we've ran. */
1001 resume_ptid
= user_visible_resume_ptid (1);
1002 set_running (resume_ptid
, 1);
1004 step_into_inline_frame (inferior_ptid
);
1006 step_once (skip_subroutines
, single_inst
, count
- 1, thread
);
1009 /* Pretend that we've stopped. */
1012 if (target_can_async_p ())
1013 inferior_event_handler (INF_EXEC_COMPLETE
, NULL
);
1018 pc
= get_frame_pc (frame
);
1019 find_pc_line_pc_range (pc
,
1020 &tp
->control
.step_range_start
,
1021 &tp
->control
.step_range_end
);
1023 /* If we have no line info, switch to stepi mode. */
1024 if (tp
->control
.step_range_end
== 0 && step_stop_if_no_debug
)
1025 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1026 else if (tp
->control
.step_range_end
== 0)
1030 if (find_pc_partial_function (pc
, &name
,
1031 &tp
->control
.step_range_start
,
1032 &tp
->control
.step_range_end
) == 0)
1033 error (_("Cannot find bounds of current function"));
1035 target_terminal_ours ();
1036 printf_filtered (_("Single stepping until exit from function %s,"
1037 "\nwhich has no line number information.\n"),
1043 /* Say we are stepping, but stop after one insn whatever it does. */
1044 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1045 if (!skip_subroutines
)
1047 Don't step over function calls, not even to functions lacking
1049 tp
->control
.step_over_calls
= STEP_OVER_NONE
;
1052 if (skip_subroutines
)
1053 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1055 tp
->step_multi
= (count
> 1);
1056 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
1058 /* For async targets, register a continuation to do any
1059 additional steps. For sync targets, the caller will handle
1060 further stepping. */
1061 if (target_can_async_p ())
1063 struct step_1_continuation_args
*args
;
1065 args
= xmalloc (sizeof (*args
));
1066 args
->skip_subroutines
= skip_subroutines
;
1067 args
->single_inst
= single_inst
;
1068 args
->count
= count
;
1069 args
->thread
= thread
;
1071 add_intermediate_continuation (tp
, step_1_continuation
, args
, xfree
);
1077 /* Continue program at specified address. */
1080 jump_command (char *arg
, int from_tty
)
1082 struct gdbarch
*gdbarch
= get_current_arch ();
1084 struct symtabs_and_lines sals
;
1085 struct symtab_and_line sal
;
1091 ensure_not_tfind_mode ();
1092 ensure_valid_thread ();
1093 ensure_not_running ();
1095 /* Find out whether we must run in the background. */
1097 async_exec
= strip_bg_char (&arg
);
1099 /* If we must run in the background, but the target can't do it,
1101 if (async_exec
&& !target_can_async_p ())
1102 error (_("Asynchronous execution not supported on this target."));
1105 error_no_arg (_("starting address"));
1107 sals
= decode_line_spec_1 (arg
, 1);
1108 if (sals
.nelts
!= 1)
1110 error (_("Unreasonable jump request"));
1116 if (sal
.symtab
== 0 && sal
.pc
== 0)
1117 error (_("No source file has been specified."));
1119 resolve_sal_pc (&sal
); /* May error out. */
1121 /* See if we are trying to jump to another function. */
1122 fn
= get_frame_function (get_current_frame ());
1123 sfn
= find_pc_function (sal
.pc
);
1124 if (fn
!= NULL
&& sfn
!= fn
)
1126 if (!query (_("Line %d is not in `%s'. Jump anyway? "), sal
.line
,
1127 SYMBOL_PRINT_NAME (fn
)))
1129 error (_("Not confirmed."));
1136 fixup_symbol_section (sfn
, 0);
1137 if (section_is_overlay (SYMBOL_OBJ_SECTION (sfn
)) &&
1138 !section_is_mapped (SYMBOL_OBJ_SECTION (sfn
)))
1140 if (!query (_("WARNING!!! Destination is in "
1141 "unmapped overlay! Jump anyway? ")))
1143 error (_("Not confirmed."));
1153 printf_filtered (_("Continuing at "));
1154 fputs_filtered (paddress (gdbarch
, addr
), gdb_stdout
);
1155 printf_filtered (".\n");
1158 /* If we are not asked to run in the bg, then prepare to run in the
1159 foreground, synchronously. */
1160 if (!async_exec
&& target_can_async_p ())
1162 /* Simulate synchronous execution. */
1163 async_disable_stdin ();
1166 clear_proceed_status ();
1167 proceed (addr
, TARGET_SIGNAL_0
, 0);
1171 /* Go to line or address in current procedure. */
1173 go_command (char *line_no
, int from_tty
)
1175 if (line_no
== (char *) NULL
|| !*line_no
)
1176 printf_filtered (_("Usage: go <location>\n"));
1179 tbreak_command (line_no
, from_tty
);
1180 jump_command (line_no
, from_tty
);
1185 /* Continue program giving it specified signal. */
1188 signal_command (char *signum_exp
, int from_tty
)
1190 enum target_signal oursig
;
1193 dont_repeat (); /* Too dangerous. */
1195 ensure_not_tfind_mode ();
1196 ensure_valid_thread ();
1197 ensure_not_running ();
1199 /* Find out whether we must run in the background. */
1200 if (signum_exp
!= NULL
)
1201 async_exec
= strip_bg_char (&signum_exp
);
1203 /* If we must run in the background, but the target can't do it,
1205 if (async_exec
&& !target_can_async_p ())
1206 error (_("Asynchronous execution not supported on this target."));
1208 /* If we are not asked to run in the bg, then prepare to run in the
1209 foreground, synchronously. */
1210 if (!async_exec
&& target_can_async_p ())
1212 /* Simulate synchronous execution. */
1213 async_disable_stdin ();
1217 error_no_arg (_("signal number"));
1219 /* It would be even slicker to make signal names be valid expressions,
1220 (the type could be "enum $signal" or some such), then the user could
1221 assign them to convenience variables. */
1222 oursig
= target_signal_from_name (signum_exp
);
1224 if (oursig
== TARGET_SIGNAL_UNKNOWN
)
1226 /* No, try numeric. */
1227 int num
= parse_and_eval_long (signum_exp
);
1230 oursig
= TARGET_SIGNAL_0
;
1232 oursig
= target_signal_from_command (num
);
1237 if (oursig
== TARGET_SIGNAL_0
)
1238 printf_filtered (_("Continuing with no signal.\n"));
1240 printf_filtered (_("Continuing with signal %s.\n"),
1241 target_signal_to_name (oursig
));
1244 clear_proceed_status ();
1245 proceed ((CORE_ADDR
) -1, oursig
, 0);
1248 /* A continuation callback for until_next_command. */
1251 until_next_continuation (void *arg
)
1253 struct thread_info
*tp
= arg
;
1255 delete_longjmp_breakpoint (tp
->num
);
1258 /* Proceed until we reach a different source line with pc greater than
1259 our current one or exit the function. We skip calls in both cases.
1261 Note that eventually this command should probably be changed so
1262 that only source lines are printed out when we hit the breakpoint
1263 we set. This may involve changes to wait_for_inferior and the
1264 proceed status code. */
1267 until_next_command (int from_tty
)
1269 struct frame_info
*frame
;
1271 struct symbol
*func
;
1272 struct symtab_and_line sal
;
1273 struct thread_info
*tp
= inferior_thread ();
1274 int thread
= tp
->num
;
1275 struct cleanup
*old_chain
;
1277 clear_proceed_status ();
1280 frame
= get_current_frame ();
1282 /* Step until either exited from this function or greater
1283 than the current line (if in symbolic section) or pc (if
1286 pc
= get_frame_pc (frame
);
1287 func
= find_pc_function (pc
);
1291 struct minimal_symbol
*msymbol
= lookup_minimal_symbol_by_pc (pc
);
1293 if (msymbol
== NULL
)
1294 error (_("Execution is not within a known function."));
1296 tp
->control
.step_range_start
= SYMBOL_VALUE_ADDRESS (msymbol
);
1297 tp
->control
.step_range_end
= pc
;
1301 sal
= find_pc_line (pc
, 0);
1303 tp
->control
.step_range_start
= BLOCK_START (SYMBOL_BLOCK_VALUE (func
));
1304 tp
->control
.step_range_end
= sal
.end
;
1307 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1309 tp
->step_multi
= 0; /* Only one call to proceed */
1311 set_longjmp_breakpoint (tp
, get_frame_id (frame
));
1312 old_chain
= make_cleanup (delete_longjmp_breakpoint_cleanup
, &thread
);
1314 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
1316 if (target_can_async_p () && is_running (inferior_ptid
))
1318 discard_cleanups (old_chain
);
1319 add_continuation (tp
, until_next_continuation
, tp
, NULL
);
1322 do_cleanups (old_chain
);
1326 until_command (char *arg
, int from_tty
)
1331 ensure_not_tfind_mode ();
1332 ensure_valid_thread ();
1333 ensure_not_running ();
1335 /* Find out whether we must run in the background. */
1337 async_exec
= strip_bg_char (&arg
);
1339 /* If we must run in the background, but the target can't do it,
1341 if (async_exec
&& !target_can_async_p ())
1342 error (_("Asynchronous execution not supported on this target."));
1344 /* If we are not asked to run in the bg, then prepare to run in the
1345 foreground, synchronously. */
1346 if (!async_exec
&& target_can_async_p ())
1348 /* Simulate synchronous execution. */
1349 async_disable_stdin ();
1353 until_break_command (arg
, from_tty
, 0);
1355 until_next_command (from_tty
);
1359 advance_command (char *arg
, int from_tty
)
1364 ensure_not_tfind_mode ();
1365 ensure_valid_thread ();
1366 ensure_not_running ();
1369 error_no_arg (_("a location"));
1371 /* Find out whether we must run in the background. */
1373 async_exec
= strip_bg_char (&arg
);
1375 /* If we must run in the background, but the target can't do it,
1377 if (async_exec
&& !target_can_async_p ())
1378 error (_("Asynchronous execution not supported on this target."));
1380 /* If we are not asked to run in the bg, then prepare to run in the
1381 foreground, synchronously. */
1382 if (!async_exec
&& target_can_async_p ())
1384 /* Simulate synchronous execution. */
1385 async_disable_stdin ();
1388 until_break_command (arg
, from_tty
, 1);
1391 /* Print the result of a function at the end of a 'finish' command. */
1394 print_return_value (struct type
*func_type
, struct type
*value_type
)
1396 struct gdbarch
*gdbarch
= get_regcache_arch (stop_registers
);
1397 struct cleanup
*old_chain
;
1398 struct ui_stream
*stb
;
1399 struct value
*value
;
1401 CHECK_TYPEDEF (value_type
);
1402 gdb_assert (TYPE_CODE (value_type
) != TYPE_CODE_VOID
);
1404 /* FIXME: 2003-09-27: When returning from a nested inferior function
1405 call, it's possible (with no help from the architecture vector)
1406 to locate and return/print a "struct return" value. This is just
1407 a more complicated case of what is already being done in the
1408 inferior function call code. In fact, when inferior function
1409 calls are made async, this will likely be made the norm. */
1411 switch (gdbarch_return_value (gdbarch
, func_type
, value_type
,
1414 case RETURN_VALUE_REGISTER_CONVENTION
:
1415 case RETURN_VALUE_ABI_RETURNS_ADDRESS
:
1416 case RETURN_VALUE_ABI_PRESERVES_ADDRESS
:
1417 value
= allocate_value (value_type
);
1418 gdbarch_return_value (gdbarch
, func_type
, value_type
, stop_registers
,
1419 value_contents_raw (value
), NULL
);
1421 case RETURN_VALUE_STRUCT_CONVENTION
:
1425 internal_error (__FILE__
, __LINE__
, _("bad switch"));
1430 struct value_print_options opts
;
1433 stb
= ui_out_stream_new (uiout
);
1434 old_chain
= make_cleanup_ui_out_stream_delete (stb
);
1435 ui_out_text (uiout
, "Value returned is ");
1436 ui_out_field_fmt (uiout
, "gdb-result-var", "$%d",
1437 record_latest_value (value
));
1438 ui_out_text (uiout
, " = ");
1439 get_raw_print_options (&opts
);
1440 value_print (value
, stb
->stream
, &opts
);
1441 ui_out_field_stream (uiout
, "return-value", stb
);
1442 ui_out_text (uiout
, "\n");
1443 do_cleanups (old_chain
);
1447 ui_out_text (uiout
, "Value returned has type: ");
1448 ui_out_field_string (uiout
, "return-type", TYPE_NAME (value_type
));
1449 ui_out_text (uiout
, ".");
1450 ui_out_text (uiout
, " Cannot determine contents\n");
1454 /* Stuff that needs to be done by the finish command after the target
1455 has stopped. In asynchronous mode, we wait for the target to stop
1456 in the call to poll or select in the event loop, so it is
1457 impossible to do all the stuff as part of the finish_command
1458 function itself. The only chance we have to complete this command
1459 is in fetch_inferior_event, which is called by the event loop as
1460 soon as it detects that the target has stopped. This function is
1461 called via the cmd_continuation pointer. */
1463 struct finish_command_continuation_args
1465 struct breakpoint
*breakpoint
;
1466 struct symbol
*function
;
1470 finish_command_continuation (void *arg
)
1472 struct finish_command_continuation_args
*a
= arg
;
1473 struct thread_info
*tp
= NULL
;
1476 if (!ptid_equal (inferior_ptid
, null_ptid
)
1477 && target_has_execution
1478 && is_stopped (inferior_ptid
))
1480 tp
= inferior_thread ();
1481 bs
= tp
->control
.stop_bpstat
;
1484 if (bpstat_find_breakpoint (bs
, a
->breakpoint
) != NULL
1485 && a
->function
!= NULL
)
1487 struct type
*value_type
;
1489 value_type
= TYPE_TARGET_TYPE (SYMBOL_TYPE (a
->function
));
1491 internal_error (__FILE__
, __LINE__
,
1492 _("finish_command: function has no target type"));
1494 if (TYPE_CODE (value_type
) != TYPE_CODE_VOID
)
1496 volatile struct gdb_exception ex
;
1498 TRY_CATCH (ex
, RETURN_MASK_ALL
)
1500 /* print_return_value can throw an exception in some
1501 circumstances. We need to catch this so that we still
1502 delete the breakpoint. */
1503 print_return_value (SYMBOL_TYPE (a
->function
), value_type
);
1506 exception_print (gdb_stdout
, ex
);
1510 /* We suppress normal call of normal_stop observer and do it here so
1511 that the *stopped notification includes the return value. */
1512 if (bs
!= NULL
&& tp
->control
.proceed_to_finish
)
1513 observer_notify_normal_stop (bs
, 1 /* print frame */);
1514 delete_breakpoint (a
->breakpoint
);
1515 delete_longjmp_breakpoint (inferior_thread ()->num
);
1519 finish_command_continuation_free_arg (void *arg
)
1524 /* finish_backward -- helper function for finish_command. */
1527 finish_backward (struct symbol
*function
)
1529 struct symtab_and_line sal
;
1530 struct thread_info
*tp
= inferior_thread ();
1532 CORE_ADDR func_addr
;
1534 pc
= get_frame_pc (get_current_frame ());
1536 if (find_pc_partial_function (pc
, NULL
, &func_addr
, NULL
) == 0)
1537 internal_error (__FILE__
, __LINE__
,
1538 _("Finish: couldn't find function."));
1540 sal
= find_pc_line (func_addr
, 0);
1542 tp
->control
.proceed_to_finish
= 1;
1543 /* Special case: if we're sitting at the function entry point,
1544 then all we need to do is take a reverse singlestep. We
1545 don't need to set a breakpoint, and indeed it would do us
1548 Note that this can only happen at frame #0, since there's
1549 no way that a function up the stack can have a return address
1550 that's equal to its entry point. */
1554 struct frame_info
*frame
= get_selected_frame (NULL
);
1555 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
1556 struct symtab_and_line sr_sal
;
1558 /* Set a step-resume at the function's entry point. Once that's
1559 hit, we'll do one more step backwards. */
1562 sr_sal
.pspace
= get_frame_program_space (frame
);
1563 insert_step_resume_breakpoint_at_sal (gdbarch
,
1564 sr_sal
, null_frame_id
);
1566 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
1570 /* We're almost there -- we just need to back up by one more
1572 tp
->control
.step_range_start
= tp
->control
.step_range_end
= 1;
1573 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
1577 /* finish_forward -- helper function for finish_command. */
1580 finish_forward (struct symbol
*function
, struct frame_info
*frame
)
1582 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
1583 struct symtab_and_line sal
;
1584 struct thread_info
*tp
= inferior_thread ();
1585 struct breakpoint
*breakpoint
;
1586 struct cleanup
*old_chain
;
1587 struct finish_command_continuation_args
*cargs
;
1588 int thread
= tp
->num
;
1590 sal
= find_pc_line (get_frame_pc (frame
), 0);
1591 sal
.pc
= get_frame_pc (frame
);
1593 breakpoint
= set_momentary_breakpoint (gdbarch
, sal
,
1594 get_stack_frame_id (frame
),
1597 old_chain
= make_cleanup_delete_breakpoint (breakpoint
);
1599 set_longjmp_breakpoint (tp
, get_frame_id (frame
));
1600 make_cleanup (delete_longjmp_breakpoint_cleanup
, &thread
);
1602 /* We want stop_registers, please... */
1603 tp
->control
.proceed_to_finish
= 1;
1604 cargs
= xmalloc (sizeof (*cargs
));
1606 cargs
->breakpoint
= breakpoint
;
1607 cargs
->function
= function
;
1608 add_continuation (tp
, finish_command_continuation
, cargs
,
1609 finish_command_continuation_free_arg
);
1610 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
1612 discard_cleanups (old_chain
);
1613 if (!target_can_async_p ())
1614 do_all_continuations ();
1617 /* "finish": Set a temporary breakpoint at the place the selected
1618 frame will return to, then continue. */
1621 finish_command (char *arg
, int from_tty
)
1623 struct frame_info
*frame
;
1624 struct symbol
*function
;
1629 ensure_not_tfind_mode ();
1630 ensure_valid_thread ();
1631 ensure_not_running ();
1633 /* Find out whether we must run in the background. */
1635 async_exec
= strip_bg_char (&arg
);
1637 /* If we must run in the background, but the target can't do it,
1639 if (async_exec
&& !target_can_async_p ())
1640 error (_("Asynchronous execution not supported on this target."));
1642 /* Don't try to async in reverse. */
1643 if (async_exec
&& execution_direction
== EXEC_REVERSE
)
1644 error (_("Asynchronous 'finish' not supported in reverse."));
1646 /* If we are not asked to run in the bg, then prepare to run in the
1647 foreground, synchronously. */
1648 if (!async_exec
&& target_can_async_p ())
1650 /* Simulate synchronous execution. */
1651 async_disable_stdin ();
1655 error (_("The \"finish\" command does not take any arguments."));
1657 frame
= get_prev_frame (get_selected_frame (_("No selected frame.")));
1659 error (_("\"finish\" not meaningful in the outermost frame."));
1661 clear_proceed_status ();
1663 /* Finishing from an inline frame is completely different. We don't
1664 try to show the "return value" - no way to locate it. So we do
1665 not need a completion. */
1666 if (get_frame_type (get_selected_frame (_("No selected frame.")))
1669 /* Claim we are stepping in the calling frame. An empty step
1670 range means that we will stop once we aren't in a function
1671 called by that frame. We don't use the magic "1" value for
1672 step_range_end, because then infrun will think this is nexti,
1673 and not step over the rest of this inlined function call. */
1674 struct thread_info
*tp
= inferior_thread ();
1675 struct symtab_and_line empty_sal
;
1677 init_sal (&empty_sal
);
1678 set_step_info (frame
, empty_sal
);
1679 tp
->control
.step_range_start
= get_frame_pc (frame
);
1680 tp
->control
.step_range_end
= tp
->control
.step_range_start
;
1681 tp
->control
.step_over_calls
= STEP_OVER_ALL
;
1683 /* Print info on the selected frame, including level number but not
1687 printf_filtered (_("Run till exit from "));
1688 print_stack_frame (get_selected_frame (NULL
), 1, LOCATION
);
1691 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
1695 /* Find the function we will return from. */
1697 function
= find_pc_function (get_frame_pc (get_selected_frame (NULL
)));
1699 /* Print info on the selected frame, including level number but not
1703 if (execution_direction
== EXEC_REVERSE
)
1704 printf_filtered (_("Run back to call of "));
1706 printf_filtered (_("Run till exit from "));
1708 print_stack_frame (get_selected_frame (NULL
), 1, LOCATION
);
1711 if (execution_direction
== EXEC_REVERSE
)
1712 finish_backward (function
);
1714 finish_forward (function
, frame
);
1719 program_info (char *args
, int from_tty
)
1723 struct thread_info
*tp
;
1726 if (!target_has_execution
)
1728 printf_filtered (_("The program being debugged is not being run.\n"));
1733 ptid
= inferior_ptid
;
1736 struct target_waitstatus ws
;
1738 get_last_target_status (&ptid
, &ws
);
1741 if (ptid_equal (ptid
, null_ptid
) || is_exited (ptid
))
1742 error (_("Invalid selected thread."));
1743 else if (is_running (ptid
))
1744 error (_("Selected thread is running."));
1746 tp
= find_thread_ptid (ptid
);
1747 bs
= tp
->control
.stop_bpstat
;
1748 stat
= bpstat_num (&bs
, &num
);
1750 target_files_info ();
1751 printf_filtered (_("Program stopped at %s.\n"),
1752 paddress (target_gdbarch
, stop_pc
));
1753 if (tp
->control
.stop_step
)
1754 printf_filtered (_("It stopped after being stepped.\n"));
1757 /* There may be several breakpoints in the same place, so this
1758 isn't as strange as it seems. */
1763 printf_filtered (_("It stopped at a breakpoint "
1764 "that has since been deleted.\n"));
1767 printf_filtered (_("It stopped at breakpoint %d.\n"), num
);
1768 stat
= bpstat_num (&bs
, &num
);
1771 else if (tp
->suspend
.stop_signal
!= TARGET_SIGNAL_0
)
1773 printf_filtered (_("It stopped with signal %s, %s.\n"),
1774 target_signal_to_name (tp
->suspend
.stop_signal
),
1775 target_signal_to_string (tp
->suspend
.stop_signal
));
1780 printf_filtered (_("Type \"info stack\" or \"info "
1781 "registers\" for more information.\n"));
1786 environment_info (char *var
, int from_tty
)
1790 char *val
= get_in_environ (current_inferior ()->environment
, var
);
1794 puts_filtered (var
);
1795 puts_filtered (" = ");
1796 puts_filtered (val
);
1797 puts_filtered ("\n");
1801 puts_filtered ("Environment variable \"");
1802 puts_filtered (var
);
1803 puts_filtered ("\" not defined.\n");
1808 char **vector
= environ_vector (current_inferior ()->environment
);
1812 puts_filtered (*vector
++);
1813 puts_filtered ("\n");
1819 set_environment_command (char *arg
, int from_tty
)
1821 char *p
, *val
, *var
;
1825 error_no_arg (_("environment variable and value"));
1827 /* Find seperation between variable name and value. */
1828 p
= (char *) strchr (arg
, '=');
1829 val
= (char *) strchr (arg
, ' ');
1831 if (p
!= 0 && val
!= 0)
1833 /* We have both a space and an equals. If the space is before the
1834 equals, walk forward over the spaces til we see a nonspace
1835 (possibly the equals). */
1840 /* Now if the = is after the char following the spaces,
1841 take the char following the spaces. */
1845 else if (val
!= 0 && p
== 0)
1849 error_no_arg (_("environment variable to set"));
1851 if (p
== 0 || p
[1] == 0)
1855 p
= arg
+ strlen (arg
); /* So that savestring below will work. */
1859 /* Not setting variable value to null. */
1861 while (*val
== ' ' || *val
== '\t')
1865 while (p
!= arg
&& (p
[-1] == ' ' || p
[-1] == '\t'))
1868 var
= savestring (arg
, p
- arg
);
1871 printf_filtered (_("Setting environment variable "
1872 "\"%s\" to null value.\n"),
1874 set_in_environ (current_inferior ()->environment
, var
, "");
1877 set_in_environ (current_inferior ()->environment
, var
, val
);
1882 unset_environment_command (char *var
, int from_tty
)
1886 /* If there is no argument, delete all environment variables.
1887 Ask for confirmation if reading from the terminal. */
1888 if (!from_tty
|| query (_("Delete all environment variables? ")))
1890 free_environ (current_inferior ()->environment
);
1891 current_inferior ()->environment
= make_environ ();
1895 unset_in_environ (current_inferior ()->environment
, var
);
1898 /* Handle the execution path (PATH variable). */
1900 static const char path_var_name
[] = "PATH";
1903 path_info (char *args
, int from_tty
)
1905 puts_filtered ("Executable and object file path: ");
1906 puts_filtered (get_in_environ (current_inferior ()->environment
,
1908 puts_filtered ("\n");
1911 /* Add zero or more directories to the front of the execution path. */
1914 path_command (char *dirname
, int from_tty
)
1920 env
= get_in_environ (current_inferior ()->environment
, path_var_name
);
1921 /* Can be null if path is not set. */
1924 exec_path
= xstrdup (env
);
1925 mod_path (dirname
, &exec_path
);
1926 set_in_environ (current_inferior ()->environment
, path_var_name
, exec_path
);
1929 path_info ((char *) NULL
, from_tty
);
1933 /* Print out the machine register regnum. If regnum is -1, print all
1934 registers (print_all == 1) or all non-float and non-vector
1935 registers (print_all == 0).
1937 For most machines, having all_registers_info() print the
1938 register(s) one per line is good enough. If a different format is
1939 required, (eg, for MIPS or Pyramid 90x, which both have lots of
1940 regs), or there is an existing convention for showing all the
1941 registers, define the architecture method PRINT_REGISTERS_INFO to
1942 provide that format. */
1945 default_print_registers_info (struct gdbarch
*gdbarch
,
1946 struct ui_file
*file
,
1947 struct frame_info
*frame
,
1948 int regnum
, int print_all
)
1951 const int numregs
= gdbarch_num_regs (gdbarch
)
1952 + gdbarch_num_pseudo_regs (gdbarch
);
1954 for (i
= 0; i
< numregs
; i
++)
1956 struct type
*regtype
;
1959 /* Decide between printing all regs, non-float / vector regs, or
1965 if (!gdbarch_register_reggroup_p (gdbarch
, i
, all_reggroup
))
1970 if (!gdbarch_register_reggroup_p (gdbarch
, i
, general_reggroup
))
1980 /* If the register name is empty, it is undefined for this
1981 processor, so don't display anything. */
1982 if (gdbarch_register_name (gdbarch
, i
) == NULL
1983 || *(gdbarch_register_name (gdbarch
, i
)) == '\0')
1986 fputs_filtered (gdbarch_register_name (gdbarch
, i
), file
);
1987 print_spaces_filtered (15 - strlen (gdbarch_register_name
1988 (gdbarch
, i
)), file
);
1990 regtype
= register_type (gdbarch
, i
);
1991 val
= allocate_value (regtype
);
1993 /* Get the data in raw format. */
1994 if (! frame_register_read (frame
, i
, value_contents_raw (val
)))
1996 fprintf_filtered (file
, "*value not available*\n");
2000 /* If virtual format is floating, print it that way, and in raw
2002 if (TYPE_CODE (regtype
) == TYPE_CODE_FLT
2003 || TYPE_CODE (regtype
) == TYPE_CODE_DECFLOAT
)
2006 struct value_print_options opts
;
2007 const gdb_byte
*valaddr
= value_contents_for_printing (val
);
2009 get_user_print_options (&opts
);
2013 value_contents_for_printing (val
),
2014 value_embedded_offset (val
), 0,
2015 file
, 0, val
, &opts
, current_language
);
2017 fprintf_filtered (file
, "\t(raw 0x");
2018 for (j
= 0; j
< register_size (gdbarch
, i
); j
++)
2022 if (gdbarch_byte_order (gdbarch
) == BFD_ENDIAN_BIG
)
2025 idx
= register_size (gdbarch
, i
) - 1 - j
;
2026 fprintf_filtered (file
, "%02x", (unsigned char) valaddr
[idx
]);
2028 fprintf_filtered (file
, ")");
2032 struct value_print_options opts
;
2034 /* Print the register in hex. */
2035 get_formatted_print_options (&opts
, 'x');
2038 value_contents_for_printing (val
),
2039 value_embedded_offset (val
), 0,
2040 file
, 0, val
, &opts
, current_language
);
2041 /* If not a vector register, print it also according to its
2043 if (TYPE_VECTOR (regtype
) == 0)
2045 get_user_print_options (&opts
);
2047 fprintf_filtered (file
, "\t");
2049 value_contents_for_printing (val
),
2050 value_embedded_offset (val
), 0,
2051 file
, 0, val
, &opts
, current_language
);
2055 fprintf_filtered (file
, "\n");
2060 registers_info (char *addr_exp
, int fpregs
)
2062 struct frame_info
*frame
;
2063 struct gdbarch
*gdbarch
;
2065 if (!target_has_registers
)
2066 error (_("The program has no registers now."));
2067 frame
= get_selected_frame (NULL
);
2068 gdbarch
= get_frame_arch (frame
);
2072 gdbarch_print_registers_info (gdbarch
, gdb_stdout
,
2077 while (*addr_exp
!= '\0')
2082 /* Keep skipping leading white space. */
2083 if (isspace ((*addr_exp
)))
2089 /* Discard any leading ``$''. Check that there is something
2090 resembling a register following it. */
2091 if (addr_exp
[0] == '$')
2093 if (isspace ((*addr_exp
)) || (*addr_exp
) == '\0')
2094 error (_("Missing register name"));
2096 /* Find the start/end of this register name/num/group. */
2098 while ((*addr_exp
) != '\0' && !isspace ((*addr_exp
)))
2102 /* Figure out what we've found and display it. */
2104 /* A register name? */
2106 int regnum
= user_reg_map_name_to_regnum (gdbarch
, start
, end
- start
);
2110 /* User registers lie completely outside of the range of
2111 normal registers. Catch them early so that the target
2113 if (regnum
>= gdbarch_num_regs (gdbarch
)
2114 + gdbarch_num_pseudo_regs (gdbarch
))
2116 struct value_print_options opts
;
2117 struct value
*val
= value_of_user_reg (regnum
, frame
);
2119 printf_filtered ("%s: ", start
);
2120 get_formatted_print_options (&opts
, 'x');
2121 val_print_scalar_formatted (check_typedef (value_type (val
)),
2122 value_contents_for_printing (val
),
2123 value_embedded_offset (val
),
2125 &opts
, 0, gdb_stdout
);
2126 printf_filtered ("\n");
2129 gdbarch_print_registers_info (gdbarch
, gdb_stdout
,
2130 frame
, regnum
, fpregs
);
2135 /* A register group? */
2137 struct reggroup
*group
;
2139 for (group
= reggroup_next (gdbarch
, NULL
);
2141 group
= reggroup_next (gdbarch
, group
))
2143 /* Don't bother with a length check. Should the user
2144 enter a short register group name, go with the first
2145 group that matches. */
2146 if (strncmp (start
, reggroup_name (group
), end
- start
) == 0)
2154 regnum
< gdbarch_num_regs (gdbarch
)
2155 + gdbarch_num_pseudo_regs (gdbarch
);
2158 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, group
))
2159 gdbarch_print_registers_info (gdbarch
,
2167 /* Nothing matched. */
2168 error (_("Invalid register `%.*s'"), (int) (end
- start
), start
);
2173 all_registers_info (char *addr_exp
, int from_tty
)
2175 registers_info (addr_exp
, 1);
2179 nofp_registers_info (char *addr_exp
, int from_tty
)
2181 registers_info (addr_exp
, 0);
2185 print_vector_info (struct ui_file
*file
,
2186 struct frame_info
*frame
, const char *args
)
2188 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
2190 if (gdbarch_print_vector_info_p (gdbarch
))
2191 gdbarch_print_vector_info (gdbarch
, file
, frame
, args
);
2195 int printed_something
= 0;
2198 regnum
< gdbarch_num_regs (gdbarch
)
2199 + gdbarch_num_pseudo_regs (gdbarch
);
2202 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, vector_reggroup
))
2204 printed_something
= 1;
2205 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
2208 if (!printed_something
)
2209 fprintf_filtered (file
, "No vector information\n");
2214 vector_info (char *args
, int from_tty
)
2216 if (!target_has_registers
)
2217 error (_("The program has no registers now."));
2219 print_vector_info (gdb_stdout
, get_selected_frame (NULL
), args
);
2222 /* Kill the inferior process. Make us have no inferior. */
2225 kill_command (char *arg
, int from_tty
)
2227 /* FIXME: This should not really be inferior_ptid (or target_has_execution).
2228 It should be a distinct flag that indicates that a target is active, cuz
2229 some targets don't have processes! */
2231 if (ptid_equal (inferior_ptid
, null_ptid
))
2232 error (_("The program is not being run."));
2233 if (!query (_("Kill the program being debugged? ")))
2234 error (_("Not confirmed."));
2237 /* If we still have other inferiors to debug, then don't mess with
2238 with their threads. */
2239 if (!have_inferiors ())
2241 init_thread_list (); /* Destroy thread info. */
2243 /* Killing off the inferior can leave us with a core file. If
2244 so, print the state we are left in. */
2245 if (target_has_stack
)
2247 printf_filtered (_("In %s,\n"), target_longname
);
2248 print_stack_frame (get_selected_frame (NULL
), 1, SRC_AND_LOC
);
2251 bfd_cache_close_all ();
2254 /* Used in `attach&' command. ARG is a point to an integer
2255 representing a process id. Proceed threads of this process iff
2256 they stopped due to debugger request, and when they did, they
2257 reported a clean stop (TARGET_SIGNAL_0). Do not proceed threads
2258 that have been explicitly been told to stop. */
2261 proceed_after_attach_callback (struct thread_info
*thread
,
2264 int pid
= * (int *) arg
;
2266 if (ptid_get_pid (thread
->ptid
) == pid
2267 && !is_exited (thread
->ptid
)
2268 && !is_executing (thread
->ptid
)
2269 && !thread
->stop_requested
2270 && thread
->suspend
.stop_signal
== TARGET_SIGNAL_0
)
2272 switch_to_thread (thread
->ptid
);
2273 clear_proceed_status ();
2274 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
2281 proceed_after_attach (int pid
)
2283 /* Don't error out if the current thread is running, because
2284 there may be other stopped threads. */
2285 struct cleanup
*old_chain
;
2287 /* Backup current thread and selected frame. */
2288 old_chain
= make_cleanup_restore_current_thread ();
2290 iterate_over_threads (proceed_after_attach_callback
, &pid
);
2292 /* Restore selected ptid. */
2293 do_cleanups (old_chain
);
2298 * Should save/restore the tty state since it might be that the
2299 * program to be debugged was started on this tty and it wants
2300 * the tty in some state other than what we want. If it's running
2301 * on another terminal or without a terminal, then saving and
2302 * restoring the tty state is a harmless no-op.
2303 * This only needs to be done if we are attaching to a process.
2306 /* attach_command --
2307 takes a program started up outside of gdb and ``attaches'' to it.
2308 This stops it cold in its tracks and allows us to start debugging it.
2309 and wait for the trace-trap that results from attaching. */
2312 attach_command_post_wait (char *args
, int from_tty
, int async_exec
)
2315 char *full_exec_path
= NULL
;
2316 struct inferior
*inferior
;
2318 inferior
= current_inferior ();
2319 inferior
->control
.stop_soon
= NO_STOP_QUIETLY
;
2321 /* If no exec file is yet known, try to determine it from the
2323 exec_file
= (char *) get_exec_file (0);
2326 exec_file
= target_pid_to_exec_file (PIDGET (inferior_ptid
));
2329 /* It's possible we don't have a full path, but rather just a
2330 filename. Some targets, such as HP-UX, don't provide the
2333 Attempt to qualify the filename against the source path.
2334 (If that fails, we'll just fall back on the original
2335 filename. Not much more we can do...) */
2337 if (!source_full_path_of (exec_file
, &full_exec_path
))
2338 full_exec_path
= xstrdup (exec_file
);
2340 exec_file_attach (full_exec_path
, from_tty
);
2341 symbol_file_add_main (full_exec_path
, from_tty
);
2346 reopen_exec_file ();
2350 /* Take any necessary post-attaching actions for this platform. */
2351 target_post_attach (PIDGET (inferior_ptid
));
2353 post_create_inferior (¤t_target
, from_tty
);
2355 /* Install inferior's terminal modes. */
2356 target_terminal_inferior ();
2360 /* The user requested an `attach&', so be sure to leave threads
2361 that didn't get a signal running. */
2363 /* Immediatelly resume all suspended threads of this inferior,
2364 and this inferior only. This should have no effect on
2365 already running threads. If a thread has been stopped with a
2366 signal, leave it be. */
2368 proceed_after_attach (inferior
->pid
);
2371 if (inferior_thread ()->suspend
.stop_signal
== TARGET_SIGNAL_0
)
2373 clear_proceed_status ();
2374 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
2380 /* The user requested a plain `attach', so be sure to leave
2381 the inferior stopped. */
2383 if (target_can_async_p ())
2384 async_enable_stdin ();
2386 /* At least the current thread is already stopped. */
2388 /* In all-stop, by definition, all threads have to be already
2389 stopped at this point. In non-stop, however, although the
2390 selected thread is stopped, others may still be executing.
2391 Be sure to explicitly stop all threads of the process. This
2392 should have no effect on already stopped threads. */
2394 target_stop (pid_to_ptid (inferior
->pid
));
2396 /* Tell the user/frontend where we're stopped. */
2398 if (deprecated_attach_hook
)
2399 deprecated_attach_hook ();
2403 struct attach_command_continuation_args
2411 attach_command_continuation (void *args
)
2413 struct attach_command_continuation_args
*a
= args
;
2415 attach_command_post_wait (a
->args
, a
->from_tty
, a
->async_exec
);
2419 attach_command_continuation_free_args (void *args
)
2421 struct attach_command_continuation_args
*a
= args
;
2428 attach_command (char *args
, int from_tty
)
2431 struct cleanup
*back_to
= make_cleanup (null_cleanup
, NULL
);
2433 dont_repeat (); /* Not for the faint of heart */
2435 if (gdbarch_has_global_solist (target_gdbarch
))
2436 /* Don't complain if all processes share the same symbol
2439 else if (target_has_execution
)
2441 if (query (_("A program is being debugged already. Kill it? ")))
2444 error (_("Not killed."));
2447 /* Clean up any leftovers from other runs. Some other things from
2448 this function should probably be moved into target_pre_inferior. */
2449 target_pre_inferior (from_tty
);
2451 if (non_stop
&& !target_supports_non_stop ())
2452 error (_("Cannot attach to this target in non-stop mode"));
2456 async_exec
= strip_bg_char (&args
);
2458 /* If we get a request for running in the bg but the target
2459 doesn't support it, error out. */
2460 if (async_exec
&& !target_can_async_p ())
2461 error (_("Asynchronous execution not supported on this target."));
2464 /* If we don't get a request of running in the bg, then we need
2465 to simulate synchronous (fg) execution. */
2466 if (!async_exec
&& target_can_async_p ())
2468 /* Simulate synchronous execution. */
2469 async_disable_stdin ();
2470 make_cleanup ((make_cleanup_ftype
*)async_enable_stdin
, NULL
);
2473 target_attach (args
, from_tty
);
2475 /* Set up the "saved terminal modes" of the inferior
2476 based on what modes we are starting it with. */
2477 target_terminal_init ();
2479 /* Set up execution context to know that we should return from
2480 wait_for_inferior as soon as the target reports a stop. */
2481 init_wait_for_inferior ();
2482 clear_proceed_status ();
2486 /* If we find that the current thread isn't stopped, explicitly
2487 do so now, because we're going to install breakpoints and
2491 /* The user requested an `attach&'; stop just one thread. */
2492 target_stop (inferior_ptid
);
2494 /* The user requested an `attach', so stop all threads of this
2496 target_stop (pid_to_ptid (ptid_get_pid (inferior_ptid
)));
2499 /* Some system don't generate traps when attaching to inferior.
2500 E.g. Mach 3 or GNU hurd. */
2501 if (!target_attach_no_wait
)
2503 struct inferior
*inferior
= current_inferior ();
2505 /* Careful here. See comments in inferior.h. Basically some
2506 OSes don't ignore SIGSTOPs on continue requests anymore. We
2507 need a way for handle_inferior_event to reset the stop_signal
2508 variable after an attach, and this is what
2509 STOP_QUIETLY_NO_SIGSTOP is for. */
2510 inferior
->control
.stop_soon
= STOP_QUIETLY_NO_SIGSTOP
;
2512 if (target_can_async_p ())
2514 /* sync_execution mode. Wait for stop. */
2515 struct attach_command_continuation_args
*a
;
2517 a
= xmalloc (sizeof (*a
));
2518 a
->args
= xstrdup (args
);
2519 a
->from_tty
= from_tty
;
2520 a
->async_exec
= async_exec
;
2521 add_inferior_continuation (attach_command_continuation
, a
,
2522 attach_command_continuation_free_args
);
2523 discard_cleanups (back_to
);
2527 wait_for_inferior ();
2530 attach_command_post_wait (args
, from_tty
, async_exec
);
2531 discard_cleanups (back_to
);
2534 /* We had just found out that the target was already attached to an
2535 inferior. PTID points at a thread of this new inferior, that is
2536 the most likely to be stopped right now, but not necessarily so.
2537 The new inferior is assumed to be already added to the inferior
2538 list at this point. If LEAVE_RUNNING, then leave the threads of
2539 this inferior running, except those we've explicitly seen reported
2543 notice_new_inferior (ptid_t ptid
, int leave_running
, int from_tty
)
2545 struct cleanup
* old_chain
;
2548 old_chain
= make_cleanup (null_cleanup
, NULL
);
2550 /* If in non-stop, leave threads as running as they were. If
2551 they're stopped for some reason other than us telling it to, the
2552 target reports a signal != TARGET_SIGNAL_0. We don't try to
2553 resume threads with such a stop signal. */
2554 async_exec
= non_stop
;
2556 if (!ptid_equal (inferior_ptid
, null_ptid
))
2557 make_cleanup_restore_current_thread ();
2559 switch_to_thread (ptid
);
2561 /* When we "notice" a new inferior we need to do all the things we
2562 would normally do if we had just attached to it. */
2564 if (is_executing (inferior_ptid
))
2566 struct inferior
*inferior
= current_inferior ();
2568 /* We're going to install breakpoints, and poke at memory,
2569 ensure that the inferior is stopped for a moment while we do
2571 target_stop (inferior_ptid
);
2573 inferior
->control
.stop_soon
= STOP_QUIETLY_REMOTE
;
2575 /* Wait for stop before proceeding. */
2576 if (target_can_async_p ())
2578 struct attach_command_continuation_args
*a
;
2580 a
= xmalloc (sizeof (*a
));
2581 a
->args
= xstrdup ("");
2582 a
->from_tty
= from_tty
;
2583 a
->async_exec
= async_exec
;
2584 add_inferior_continuation (attach_command_continuation
, a
,
2585 attach_command_continuation_free_args
);
2587 do_cleanups (old_chain
);
2591 wait_for_inferior ();
2594 async_exec
= leave_running
;
2595 attach_command_post_wait ("" /* args */, from_tty
, async_exec
);
2597 do_cleanups (old_chain
);
2602 * takes a program previously attached to and detaches it.
2603 * The program resumes execution and will no longer stop
2604 * on signals, etc. We better not have left any breakpoints
2605 * in the program or it'll die when it hits one. For this
2606 * to work, it may be necessary for the process to have been
2607 * previously attached. It *might* work if the program was
2608 * started via the normal ptrace (PTRACE_TRACEME).
2612 detach_command (char *args
, int from_tty
)
2614 dont_repeat (); /* Not for the faint of heart. */
2616 if (ptid_equal (inferior_ptid
, null_ptid
))
2617 error (_("The program is not being run."));
2619 disconnect_tracing (from_tty
);
2621 target_detach (args
, from_tty
);
2623 /* If the solist is global across inferiors, don't clear it when we
2624 detach from a single inferior. */
2625 if (!gdbarch_has_global_solist (target_gdbarch
))
2626 no_shared_libraries (NULL
, from_tty
);
2628 /* If we still have inferiors to debug, then don't mess with their
2630 if (!have_inferiors ())
2631 init_thread_list ();
2633 if (deprecated_detach_hook
)
2634 deprecated_detach_hook ();
2637 /* Disconnect from the current target without resuming it (leaving it
2638 waiting for a debugger).
2640 We'd better not have left any breakpoints in the program or the
2641 next debugger will get confused. Currently only supported for some
2642 remote targets, since the normal attach mechanisms don't work on
2643 stopped processes on some native platforms (e.g. GNU/Linux). */
2646 disconnect_command (char *args
, int from_tty
)
2648 dont_repeat (); /* Not for the faint of heart. */
2649 target_disconnect (args
, from_tty
);
2650 no_shared_libraries (NULL
, from_tty
);
2651 init_thread_list ();
2652 if (deprecated_detach_hook
)
2653 deprecated_detach_hook ();
2657 interrupt_target_1 (int all_threads
)
2662 ptid
= minus_one_ptid
;
2664 ptid
= inferior_ptid
;
2667 /* Tag the thread as having been explicitly requested to stop, so
2668 other parts of gdb know not to resume this thread automatically,
2669 if it was stopped due to an internal event. Limit this to
2670 non-stop mode, as when debugging a multi-threaded application in
2671 all-stop mode, we will only get one stop event --- it's undefined
2672 which thread will report the event. */
2674 set_stop_requested (ptid
, 1);
2677 /* Stop the execution of the target while running in async mode, in
2678 the backgound. In all-stop, stop the whole process. In non-stop
2679 mode, stop the current thread only by default, or stop all threads
2680 if the `-a' switch is used. */
2682 /* interrupt [-a] */
2684 interrupt_target_command (char *args
, int from_tty
)
2686 if (target_can_async_p ())
2688 int all_threads
= 0;
2690 dont_repeat (); /* Not for the faint of heart. */
2693 && strncmp (args
, "-a", sizeof ("-a") - 1) == 0)
2696 if (!non_stop
&& all_threads
)
2697 error (_("-a is meaningless in all-stop mode."));
2699 interrupt_target_1 (all_threads
);
2704 print_float_info (struct ui_file
*file
,
2705 struct frame_info
*frame
, const char *args
)
2707 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
2709 if (gdbarch_print_float_info_p (gdbarch
))
2710 gdbarch_print_float_info (gdbarch
, file
, frame
, args
);
2714 int printed_something
= 0;
2717 regnum
< gdbarch_num_regs (gdbarch
)
2718 + gdbarch_num_pseudo_regs (gdbarch
);
2721 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, float_reggroup
))
2723 printed_something
= 1;
2724 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
2727 if (!printed_something
)
2728 fprintf_filtered (file
, "No floating-point info "
2729 "available for this processor.\n");
2734 float_info (char *args
, int from_tty
)
2736 if (!target_has_registers
)
2737 error (_("The program has no registers now."));
2739 print_float_info (gdb_stdout
, get_selected_frame (NULL
), args
);
2743 unset_command (char *args
, int from_tty
)
2745 printf_filtered (_("\"unset\" must be followed by the "
2746 "name of an unset subcommand.\n"));
2747 help_list (unsetlist
, "unset ", -1, gdb_stdout
);
2751 _initialize_infcmd (void)
2753 struct cmd_list_element
*c
= NULL
;
2755 /* Add the filename of the terminal connected to inferior I/O. */
2756 add_setshow_filename_cmd ("inferior-tty", class_run
,
2757 &inferior_io_terminal_scratch
, _("\
2758 Set terminal for future runs of program being debugged."), _("\
2759 Show terminal for future runs of program being debugged."), _("\
2760 Usage: set inferior-tty /dev/pts/1"),
2761 set_inferior_tty_command
,
2762 show_inferior_tty_command
,
2763 &setlist
, &showlist
);
2764 add_com_alias ("tty", "set inferior-tty", class_alias
, 0);
2766 add_setshow_optional_filename_cmd ("args", class_run
,
2767 &inferior_args_scratch
, _("\
2768 Set argument list to give program being debugged when it is started."), _("\
2769 Show argument list to give program being debugged when it is started."), _("\
2770 Follow this command with any number of args, to be passed to the program."),
2773 &setlist
, &showlist
);
2775 c
= add_cmd ("environment", no_class
, environment_info
, _("\
2776 The environment to give the program, or one variable's value.\n\
2777 With an argument VAR, prints the value of environment variable VAR to\n\
2778 give the program being debugged. With no arguments, prints the entire\n\
2779 environment to be given to the program."), &showlist
);
2780 set_cmd_completer (c
, noop_completer
);
2782 add_prefix_cmd ("unset", no_class
, unset_command
,
2783 _("Complement to certain \"set\" commands."),
2784 &unsetlist
, "unset ", 0, &cmdlist
);
2786 c
= add_cmd ("environment", class_run
, unset_environment_command
, _("\
2787 Cancel environment variable VAR for the program.\n\
2788 This does not affect the program until the next \"run\" command."),
2790 set_cmd_completer (c
, noop_completer
);
2792 c
= add_cmd ("environment", class_run
, set_environment_command
, _("\
2793 Set environment variable value to give the program.\n\
2794 Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\
2795 VALUES of environment variables are uninterpreted strings.\n\
2796 This does not affect the program until the next \"run\" command."),
2798 set_cmd_completer (c
, noop_completer
);
2800 c
= add_com ("path", class_files
, path_command
, _("\
2801 Add directory DIR(s) to beginning of search path for object files.\n\
2802 $cwd in the path means the current working directory.\n\
2803 This path is equivalent to the $PATH shell variable. It is a list of\n\
2804 directories, separated by colons. These directories are searched to find\n\
2805 fully linked executable files and separately compiled object files as \
2807 set_cmd_completer (c
, filename_completer
);
2809 c
= add_cmd ("paths", no_class
, path_info
, _("\
2810 Current search path for finding object files.\n\
2811 $cwd in the path means the current working directory.\n\
2812 This path is equivalent to the $PATH shell variable. It is a list of\n\
2813 directories, separated by colons. These directories are searched to find\n\
2814 fully linked executable files and separately compiled object files as \
2817 set_cmd_completer (c
, noop_completer
);
2819 add_prefix_cmd ("kill", class_run
, kill_command
,
2820 _("Kill execution of program being debugged."),
2821 &killlist
, "kill ", 0, &cmdlist
);
2823 add_com ("attach", class_run
, attach_command
, _("\
2824 Attach to a process or file outside of GDB.\n\
2825 This command attaches to another target, of the same type as your last\n\
2826 \"target\" command (\"info files\" will show your target stack).\n\
2827 The command may take as argument a process id or a device file.\n\
2828 For a process id, you must have permission to send the process a signal,\n\
2829 and it must have the same effective uid as the debugger.\n\
2830 When using \"attach\" with a process id, the debugger finds the\n\
2831 program running in the process, looking first in the current working\n\
2832 directory, or (if not found there) using the source file search path\n\
2833 (see the \"directory\" command). You can also use the \"file\" command\n\
2834 to specify the program, and to load its symbol table."));
2836 add_prefix_cmd ("detach", class_run
, detach_command
, _("\
2837 Detach a process or file previously attached.\n\
2838 If a process, it is no longer traced, and it continues its execution. If\n\
2839 you were debugging a file, the file is closed and gdb no longer accesses it."),
2840 &detachlist
, "detach ", 0, &cmdlist
);
2842 add_com ("disconnect", class_run
, disconnect_command
, _("\
2843 Disconnect from a target.\n\
2844 The target will wait for another debugger to connect. Not available for\n\
2847 add_com ("signal", class_run
, signal_command
, _("\
2848 Continue program giving it signal specified by the argument.\n\
2849 An argument of \"0\" means continue program without giving it a signal."));
2851 add_com ("stepi", class_run
, stepi_command
, _("\
2852 Step one instruction exactly.\n\
2853 Argument N means do this N times (or till program stops for another \
2855 add_com_alias ("si", "stepi", class_alias
, 0);
2857 add_com ("nexti", class_run
, nexti_command
, _("\
2858 Step one instruction, but proceed through subroutine calls.\n\
2859 Argument N means do this N times (or till program stops for another \
2861 add_com_alias ("ni", "nexti", class_alias
, 0);
2863 add_com ("finish", class_run
, finish_command
, _("\
2864 Execute until selected stack frame returns.\n\
2865 Upon return, the value returned is printed and put in the value history."));
2866 add_com_alias ("fin", "finish", class_run
, 1);
2868 add_com ("next", class_run
, next_command
, _("\
2869 Step program, proceeding through subroutine calls.\n\
2870 Like the \"step\" command as long as subroutine calls do not happen;\n\
2871 when they do, the call is treated as one instruction.\n\
2872 Argument N means do this N times (or till program stops for another \
2874 add_com_alias ("n", "next", class_run
, 1);
2876 add_com_alias ("S", "next", class_run
, 1);
2878 add_com ("step", class_run
, step_command
, _("\
2879 Step program until it reaches a different source line.\n\
2880 Argument N means do this N times (or till program stops for another \
2882 add_com_alias ("s", "step", class_run
, 1);
2884 c
= add_com ("until", class_run
, until_command
, _("\
2885 Execute until the program reaches a source line greater than the current\n\
2886 or a specified location (same args as break command) within the current \
2888 set_cmd_completer (c
, location_completer
);
2889 add_com_alias ("u", "until", class_run
, 1);
2891 c
= add_com ("advance", class_run
, advance_command
, _("\
2892 Continue the program up to the given location (same form as args for break \
2894 Execution will also stop upon exit from the current stack frame."));
2895 set_cmd_completer (c
, location_completer
);
2897 c
= add_com ("jump", class_run
, jump_command
, _("\
2898 Continue program being debugged at specified line or address.\n\
2899 Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\
2900 for an address to start at."));
2901 set_cmd_completer (c
, location_completer
);
2905 c
= add_com ("go", class_run
, go_command
, _("\
2906 Usage: go <location>\n\
2907 Continue program being debugged, stopping at specified line or \n\
2909 Give as argument either LINENUM or *ADDR, where ADDR is an \n\
2910 expression for an address to start at.\n\
2911 This command is a combination of tbreak and jump."));
2912 set_cmd_completer (c
, location_completer
);
2916 add_com_alias ("g", "go", class_run
, 1);
2918 add_com ("continue", class_run
, continue_command
, _("\
2919 Continue program being debugged, after signal or breakpoint.\n\
2920 If proceeding from breakpoint, a number N may be used as an argument,\n\
2921 which means to set the ignore count of that breakpoint to N - 1 (so that\n\
2922 the breakpoint won't break until the Nth time it is reached).\n\
2924 If non-stop mode is enabled, continue only the current thread,\n\
2925 otherwise all the threads in the program are continued. To \n\
2926 continue all stopped threads in non-stop mode, use the -a option.\n\
2927 Specifying -a and an ignore count simultaneously is an error."));
2928 add_com_alias ("c", "cont", class_run
, 1);
2929 add_com_alias ("fg", "cont", class_run
, 1);
2931 c
= add_com ("run", class_run
, run_command
, _("\
2932 Start debugged program. You may specify arguments to give it.\n\
2933 Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\
2934 Input and output redirection with \">\", \"<\", or \">>\" are also \
2936 With no arguments, uses arguments last specified (with \"run\" \
2937 or \"set args\").\n\
2938 To cancel previous arguments and run with no arguments,\n\
2939 use \"set args\" without arguments."));
2940 set_cmd_completer (c
, filename_completer
);
2941 add_com_alias ("r", "run", class_run
, 1);
2943 add_com ("R", class_run
, run_no_args_command
,
2944 _("Start debugged program with no arguments."));
2946 c
= add_com ("start", class_run
, start_command
, _("\
2947 Run the debugged program until the beginning of the main procedure.\n\
2948 You may specify arguments to give to your program, just as with the\n\
2949 \"run\" command."));
2950 set_cmd_completer (c
, filename_completer
);
2952 add_com ("interrupt", class_run
, interrupt_target_command
,
2953 _("Interrupt the execution of the debugged program.\n\
2954 If non-stop mode is enabled, interrupt only the current thread,\n\
2955 otherwise all the threads in the program are stopped. To \n\
2956 interrupt all running threads in non-stop mode, use the -a option."));
2958 add_info ("registers", nofp_registers_info
, _("\
2959 List of integer registers and their contents, for selected stack frame.\n\
2960 Register name as argument means describe only that register."));
2961 add_info_alias ("r", "registers", 1);
2964 add_com ("lr", class_info
, nofp_registers_info
, _("\
2965 List of integer registers and their contents, for selected stack frame.\n\
2966 Register name as argument means describe only that register."));
2967 add_info ("all-registers", all_registers_info
, _("\
2968 List of all registers and their contents, for selected stack frame.\n\
2969 Register name as argument means describe only that register."));
2971 add_info ("program", program_info
,
2972 _("Execution status of the program."));
2974 add_info ("float", float_info
,
2975 _("Print the status of the floating point unit\n"));
2977 add_info ("vector", vector_info
,
2978 _("Print the status of the vector unit\n"));