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 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"
59 /* Functions exported for general use, in inferior.h: */
61 void all_registers_info (char *, int);
63 void registers_info (char *, int);
65 void nexti_command (char *, int);
67 void stepi_command (char *, int);
69 void continue_command (char *, int);
71 void interrupt_target_command (char *args
, int from_tty
);
73 /* Local functions: */
75 static void nofp_registers_info (char *, int);
77 static void print_return_value (struct type
*func_type
,
78 struct type
*value_type
);
80 static void until_next_command (int);
82 static void until_command (char *, int);
84 static void path_info (char *, int);
86 static void path_command (char *, int);
88 static void unset_command (char *, int);
90 static void float_info (char *, int);
92 static void disconnect_command (char *, int);
94 static void unset_environment_command (char *, int);
96 static void set_environment_command (char *, int);
98 static void environment_info (char *, int);
100 static void program_info (char *, int);
102 static void finish_command (char *, int);
104 static void signal_command (char *, int);
106 static void jump_command (char *, int);
108 static void step_1 (int, int, char *);
109 static void step_once (int skip_subroutines
, int single_inst
, int count
, int thread
);
111 static void next_command (char *, int);
113 static void step_command (char *, int);
115 static void run_command (char *, int);
117 static void run_no_args_command (char *args
, int from_tty
);
119 static void go_command (char *line_no
, int from_tty
);
121 static int strip_bg_char (char **);
123 void _initialize_infcmd (void);
125 #define ERROR_NO_INFERIOR \
126 if (!target_has_execution) error (_("The program is not being run."));
128 /* Scratch area where string containing arguments to give to the program will be
129 stored by 'set args'. As soon as anything is stored, notice_args_set will
130 move it into per-inferior storage. Arguments are separated by spaces. Empty
131 string (pointer to '\0') means no args. */
133 static char *inferior_args_scratch
;
135 /* Scratch area where 'set inferior-tty' will store user-provided value.
136 We'll immediate copy it into per-inferior storage. */
138 static char *inferior_io_terminal_scratch
;
140 /* Pid of our debugged inferior, or 0 if no inferior now.
141 Since various parts of infrun.c test this to see whether there is a program
142 being debugged it should be nonzero (currently 3 is used) for remote
145 ptid_t inferior_ptid
;
147 /* Address at which inferior stopped. */
151 /* Flag indicating that a command has proceeded the inferior past the
152 current breakpoint. */
154 int breakpoint_proceeded
;
156 /* Nonzero if stopped due to completion of a stack dummy routine. */
158 enum stop_stack_kind stop_stack_dummy
;
160 /* Nonzero if stopped due to a random (unexpected) signal in inferior
163 int stopped_by_random_signal
;
166 /* Accessor routines. */
168 /* Set the io terminal for the current inferior. Ownership of
169 TERMINAL_NAME is not transferred. */
172 set_inferior_io_terminal (const char *terminal_name
)
174 xfree (current_inferior ()->terminal
);
175 current_inferior ()->terminal
= terminal_name
? xstrdup (terminal_name
) : 0;
179 get_inferior_io_terminal (void)
181 return current_inferior ()->terminal
;
185 set_inferior_tty_command (char *args
, int from_tty
,
186 struct cmd_list_element
*c
)
188 /* CLI has assigned the user-provided value to inferior_io_terminal_scratch.
189 Now route it to current inferior. */
190 set_inferior_io_terminal (inferior_io_terminal_scratch
);
194 show_inferior_tty_command (struct ui_file
*file
, int from_tty
,
195 struct cmd_list_element
*c
, const char *value
)
197 /* Note that we ignore the passed-in value in favor of computing it
199 const char *inferior_io_terminal
= get_inferior_io_terminal ();
200 if (inferior_io_terminal
== NULL
)
201 inferior_io_terminal
= "";
202 fprintf_filtered (gdb_stdout
,
203 _("Terminal for future runs of program being debugged "
204 "is \"%s\".\n"), inferior_io_terminal
);
208 get_inferior_args (void)
210 if (current_inferior ()->argc
!= 0)
214 n
= construct_inferior_arguments (current_inferior ()->argc
,
215 current_inferior ()->argv
);
216 set_inferior_args (n
);
220 if (current_inferior ()->args
== NULL
)
221 current_inferior ()->args
= xstrdup ("");
223 return current_inferior ()->args
;
226 /* Set the arguments for the current inferior. Ownership of
227 NEWARGS is not transferred. */
230 set_inferior_args (char *newargs
)
232 xfree (current_inferior ()->args
);
233 current_inferior ()->args
= newargs
? xstrdup (newargs
) : NULL
;
234 current_inferior ()->argc
= 0;
235 current_inferior ()->argv
= 0;
239 set_inferior_args_vector (int argc
, char **argv
)
241 current_inferior ()->argc
= argc
;
242 current_inferior ()->argv
= argv
;
245 /* Notice when `set args' is run. */
247 set_args_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
249 /* CLI has assigned the user-provided value to inferior_args_scratch.
250 Now route it to current inferior. */
251 set_inferior_args (inferior_args_scratch
);
254 /* Notice when `show args' is run. */
256 show_args_command (struct ui_file
*file
, int from_tty
,
257 struct cmd_list_element
*c
, const char *value
)
259 /* Note that we ignore the passed-in value in favor of computing it
261 deprecated_show_value_hack (file
, from_tty
, c
, get_inferior_args ());
265 /* Compute command-line string given argument vector. This does the
266 same shell processing as fork_inferior. */
268 construct_inferior_arguments (int argc
, char **argv
)
272 if (STARTUP_WITH_SHELL
)
274 /* This holds all the characters considered special to the
275 typical Unix shells. We include `^' because the SunOS
276 /bin/sh treats it as a synonym for `|'. */
277 char *special
= "\"!#$&*()\\|[]{}<>?'\"`~^; \t\n";
282 /* We over-compute the size. It shouldn't matter. */
283 for (i
= 0; i
< argc
; ++i
)
284 length
+= 3 * strlen (argv
[i
]) + 1 + 2 * (argv
[i
][0] == '\0');
286 result
= (char *) xmalloc (length
);
289 for (i
= 0; i
< argc
; ++i
)
294 /* Need to handle empty arguments specially. */
295 if (argv
[i
][0] == '\0')
302 for (cp
= argv
[i
]; *cp
; ++cp
)
306 /* A newline cannot be quoted with a backslash (it
307 just disappears), only by putting it inside
315 if (strchr (special
, *cp
) != NULL
)
326 /* In this case we can't handle arguments that contain spaces,
327 tabs, or newlines -- see breakup_args(). */
331 for (i
= 0; i
< argc
; ++i
)
333 char *cp
= strchr (argv
[i
], ' ');
335 cp
= strchr (argv
[i
], '\t');
337 cp
= strchr (argv
[i
], '\n');
339 error (_("can't handle command-line argument containing whitespace"));
340 length
+= strlen (argv
[i
]) + 1;
343 result
= (char *) xmalloc (length
);
345 for (i
= 0; i
< argc
; ++i
)
348 strcat (result
, " ");
349 strcat (result
, argv
[i
]);
357 /* This function detects whether or not a '&' character (indicating
358 background execution) has been added as *the last* of the arguments ARGS
359 of a command. If it has, it removes it and returns 1. Otherwise it
360 does nothing and returns 0. */
362 strip_bg_char (char **args
)
366 p
= strchr (*args
, '&');
370 if (p
== (*args
+ strlen (*args
) - 1))
372 if (strlen (*args
) > 1)
376 while (*p
== ' ' || *p
== '\t');
387 /* Common actions to take after creating any sort of inferior, by any
388 means (running, attaching, connecting, et cetera). The target
389 should be stopped. */
392 post_create_inferior (struct target_ops
*target
, int from_tty
)
394 /* Be sure we own the terminal in case write operations are performed. */
395 target_terminal_ours ();
397 /* If the target hasn't taken care of this already, do it now.
398 Targets which need to access registers during to_open,
399 to_create_inferior, or to_attach should do it earlier; but many
401 target_find_description ();
403 /* Now that we know the register layout, retrieve current PC. */
404 stop_pc
= regcache_read_pc (get_current_regcache ());
408 /* Create the hooks to handle shared library load and unload
410 #ifdef SOLIB_CREATE_INFERIOR_HOOK
411 SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid
));
413 solib_create_inferior_hook (from_tty
);
417 /* If the solist is global across processes, there's no need to
419 if (exec_bfd
&& !gdbarch_has_global_solist (target_gdbarch
))
421 /* Sometimes the platform-specific hook loads initial shared
422 libraries, and sometimes it doesn't. If it doesn't FROM_TTY will be
423 incorrectly 0 but such solib targets should be fixed anyway. If we
424 made all the inferior hook methods consistent, this call could be
425 removed. Call it only after the solib target has been initialized by
426 solib_create_inferior_hook. */
429 SOLIB_ADD (NULL
, 0, target
, auto_solib_add
);
431 solib_add (NULL
, 0, target
, auto_solib_add
);
435 /* If the user sets watchpoints before execution having started,
436 then she gets software watchpoints, because GDB can't know which
437 target will end up being pushed, or if it supports hardware
438 watchpoints or not. breakpoint_re_set takes care of promoting
439 watchpoints to hardware watchpoints if possible, however, if this
440 new inferior doesn't load shared libraries or we don't pull in
441 symbols from any other source on this target/arch,
442 breakpoint_re_set is never called. Call it now so that software
443 watchpoints get a chance to be promoted to hardware watchpoints
444 if the now pushed target supports hardware watchpoints. */
445 breakpoint_re_set ();
447 observer_notify_inferior_created (target
, from_tty
);
450 /* Kill the inferior if already running. This function is designed
451 to be called when we are about to start the execution of the program
452 from the beginning. Ask the user to confirm that he wants to restart
453 the program being debugged when FROM_TTY is non-null. */
456 kill_if_already_running (int from_tty
)
458 if (! ptid_equal (inferior_ptid
, null_ptid
) && target_has_execution
)
460 /* Bail out before killing the program if we will not be able to
462 target_require_runnable ();
465 && !query (_("The program being debugged has been started already.\n\
466 Start it from the beginning? ")))
467 error (_("Program not restarted."));
472 /* Implement the "run" command. If TBREAK_AT_MAIN is set, then insert
473 a temporary breakpoint at the begining of the main program before
474 running the program. */
477 run_command_1 (char *args
, int from_tty
, int tbreak_at_main
)
480 struct cleanup
*old_chain
;
485 kill_if_already_running (from_tty
);
487 init_wait_for_inferior ();
488 clear_breakpoint_hit_counts ();
490 /* Clean up any leftovers from other runs. Some other things from
491 this function should probably be moved into target_pre_inferior. */
492 target_pre_inferior (from_tty
);
494 /* The comment here used to read, "The exec file is re-read every
495 time we do a generic_mourn_inferior, so we just have to worry
496 about the symbol file." The `generic_mourn_inferior' function
497 gets called whenever the program exits. However, suppose the
498 program exits, and *then* the executable file changes? We need
499 to check again here. Since reopen_exec_file doesn't do anything
500 if the timestamp hasn't changed, I don't see the harm. */
504 /* Insert the temporary breakpoint if a location was specified. */
506 tbreak_command (main_name (), 0);
508 exec_file
= (char *) get_exec_file (0);
510 if (non_stop
&& !target_supports_non_stop ())
511 error (_("The target does not support running in non-stop mode."));
513 /* We keep symbols from add-symbol-file, on the grounds that the
514 user might want to add some symbols before running the program
515 (right?). But sometimes (dynamic loading where the user manually
516 introduces the new symbols with add-symbol-file), the code which
517 the symbols describe does not persist between runs. Currently
518 the user has to manually nuke all symbols between runs if they
519 want them to go away (PR 2207). This is probably reasonable. */
523 if (target_can_async_p ())
524 async_disable_stdin ();
528 int async_exec
= strip_bg_char (&args
);
530 /* If we get a request for running in the bg but the target
531 doesn't support it, error out. */
532 if (async_exec
&& !target_can_async_p ())
533 error (_("Asynchronous execution not supported on this target."));
535 /* If we don't get a request of running in the bg, then we need
536 to simulate synchronous (fg) execution. */
537 if (!async_exec
&& target_can_async_p ())
539 /* Simulate synchronous execution */
540 async_disable_stdin ();
543 /* If there were other args, beside '&', process them. */
545 set_inferior_args (args
);
550 ui_out_field_string (uiout
, NULL
, "Starting program");
551 ui_out_text (uiout
, ": ");
553 ui_out_field_string (uiout
, "execfile", exec_file
);
554 ui_out_spaces (uiout
, 1);
555 /* We call get_inferior_args() because we might need to compute
557 ui_out_field_string (uiout
, "infargs", get_inferior_args ());
558 ui_out_text (uiout
, "\n");
559 ui_out_flush (uiout
);
562 /* We call get_inferior_args() because we might need to compute
564 target_create_inferior (exec_file
, get_inferior_args (),
565 environ_vector (current_inferior ()->environment
), from_tty
);
567 /* We're starting off a new process. When we get out of here, in
568 non-stop mode, finish the state of all threads of that process,
569 but leave other threads alone, as they may be stopped in internal
570 events --- the frontend shouldn't see them as stopped. In
571 all-stop, always finish the state of all threads, as we may be
572 resuming more than just the new process. */
574 ptid
= pid_to_ptid (ptid_get_pid (inferior_ptid
));
576 ptid
= minus_one_ptid
;
577 old_chain
= make_cleanup (finish_thread_state_cleanup
, &ptid
);
579 /* Pass zero for FROM_TTY, because at this point the "run" command
580 has done its thing; now we are setting up the running program. */
581 post_create_inferior (¤t_target
, 0);
583 /* Start the target running. Do not use -1 continuation as it would skip
584 breakpoint right at the entry point. */
585 proceed (regcache_read_pc (get_current_regcache ()), TARGET_SIGNAL_0
, 0);
587 /* Since there was no error, there's no need to finish the thread
589 discard_cleanups (old_chain
);
593 run_command (char *args
, int from_tty
)
595 run_command_1 (args
, from_tty
, 0);
599 run_no_args_command (char *args
, int from_tty
)
601 set_inferior_args ("");
605 /* Start the execution of the program up until the beginning of the main
609 start_command (char *args
, int from_tty
)
611 /* Some languages such as Ada need to search inside the program
612 minimal symbols for the location where to put the temporary
613 breakpoint before starting. */
614 if (!have_minimal_symbols ())
615 error (_("No symbol table loaded. Use the \"file\" command."));
617 /* Run the program until reaching the main procedure... */
618 run_command_1 (args
, from_tty
, 1);
622 proceed_thread_callback (struct thread_info
*thread
, void *arg
)
624 /* We go through all threads individually instead of compressing
625 into a single target `resume_all' request, because some threads
626 may be stopped in internal breakpoints/events, or stopped waiting
627 for its turn in the displaced stepping queue (that is, they are
628 running && !executing). The target side has no idea about why
629 the thread is stopped, so a `resume_all' command would resume too
630 much. If/when GDB gains a way to tell the target `hold this
631 thread stopped until I say otherwise', then we can optimize
633 if (!is_stopped (thread
->ptid
))
636 switch_to_thread (thread
->ptid
);
637 clear_proceed_status ();
638 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
643 ensure_valid_thread (void)
645 if (ptid_equal (inferior_ptid
, null_ptid
)
646 || is_exited (inferior_ptid
))
648 Cannot execute this command without a live selected thread."));
651 /* If the user is looking at trace frames, any resumption of execution
652 is likely to mix up recorded and live target data. So simply
653 disallow those commands. */
656 ensure_not_tfind_mode (void)
658 if (get_traceframe_number () >= 0)
660 Cannot execute this command while looking at trace frames."));
664 continue_1 (int all_threads
)
667 ensure_not_tfind_mode ();
669 if (non_stop
&& all_threads
)
671 /* Don't error out if the current thread is running, because
672 there may be other stopped threads. */
673 struct cleanup
*old_chain
;
675 /* Backup current thread and selected frame. */
676 old_chain
= make_cleanup_restore_current_thread ();
678 iterate_over_threads (proceed_thread_callback
, NULL
);
680 /* Restore selected ptid. */
681 do_cleanups (old_chain
);
685 ensure_valid_thread ();
686 ensure_not_running ();
687 clear_proceed_status ();
688 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
692 /* continue [-a] [proceed-count] [&] */
694 continue_command (char *args
, int from_tty
)
700 /* Find out whether we must run in the background. */
702 async_exec
= strip_bg_char (&args
);
704 /* If we must run in the background, but the target can't do it,
706 if (async_exec
&& !target_can_async_p ())
707 error (_("Asynchronous execution not supported on this target."));
709 /* If we are not asked to run in the bg, then prepare to run in the
710 foreground, synchronously. */
711 if (!async_exec
&& target_can_async_p ())
713 /* Simulate synchronous execution */
714 async_disable_stdin ();
719 if (strncmp (args
, "-a", sizeof ("-a") - 1) == 0)
722 args
+= sizeof ("-a") - 1;
728 if (!non_stop
&& all_threads
)
729 error (_("`-a' is meaningless in all-stop mode."));
731 if (args
!= NULL
&& all_threads
)
733 Can't resume all threads and specify proceed count simultaneously."));
735 /* If we have an argument left, set proceed count of breakpoint we
742 struct thread_info
*tp
;
745 tp
= find_thread_ptid (inferior_ptid
);
749 struct target_waitstatus ws
;
751 get_last_target_status (&last_ptid
, &ws
);
752 tp
= find_thread_ptid (last_ptid
);
755 bs
= tp
->stop_bpstat
;
757 while ((stat
= bpstat_num (&bs
, &num
)) != 0)
760 set_ignore_count (num
,
761 parse_and_eval_long (args
) - 1,
763 /* set_ignore_count prints a message ending with a period.
764 So print two spaces before "Continuing.". */
766 printf_filtered (" ");
770 if (!stopped
&& from_tty
)
773 ("Not stopped at any breakpoint; argument ignored.\n");
778 printf_filtered (_("Continuing.\n"));
780 continue_1 (all_threads
);
783 /* Record the starting point of a "step" or "next" command. */
786 set_step_frame (void)
788 struct symtab_and_line sal
;
790 find_frame_sal (get_current_frame (), &sal
);
791 set_step_info (get_current_frame (), sal
);
794 /* Step until outside of current statement. */
797 step_command (char *count_string
, int from_tty
)
799 step_1 (0, 0, count_string
);
802 /* Likewise, but skip over subroutine calls as if single instructions. */
805 next_command (char *count_string
, int from_tty
)
807 step_1 (1, 0, count_string
);
810 /* Likewise, but step only one instruction. */
813 stepi_command (char *count_string
, int from_tty
)
815 step_1 (0, 1, count_string
);
819 nexti_command (char *count_string
, int from_tty
)
821 step_1 (1, 1, count_string
);
825 delete_longjmp_breakpoint_cleanup (void *arg
)
827 int thread
= * (int *) arg
;
828 delete_longjmp_breakpoint (thread
);
832 step_1 (int skip_subroutines
, int single_inst
, char *count_string
)
835 struct frame_info
*frame
;
836 struct cleanup
*cleanups
= make_cleanup (null_cleanup
, NULL
);
841 ensure_not_tfind_mode ();
842 ensure_valid_thread ();
843 ensure_not_running ();
846 async_exec
= strip_bg_char (&count_string
);
848 /* If we get a request for running in the bg but the target
849 doesn't support it, error out. */
850 if (async_exec
&& !target_can_async_p ())
851 error (_("Asynchronous execution not supported on this target."));
853 /* If we don't get a request of running in the bg, then we need
854 to simulate synchronous (fg) execution. */
855 if (!async_exec
&& target_can_async_p ())
857 /* Simulate synchronous execution */
858 async_disable_stdin ();
861 count
= count_string
? parse_and_eval_long (count_string
) : 1;
863 if (!single_inst
|| skip_subroutines
) /* leave si command alone */
865 if (in_thread_list (inferior_ptid
))
866 thread
= pid_to_thread_id (inferior_ptid
);
868 set_longjmp_breakpoint (thread
);
870 make_cleanup (delete_longjmp_breakpoint_cleanup
, &thread
);
873 /* In synchronous case, all is well; each step_once call will step once. */
874 if (!target_can_async_p ())
876 for (; count
> 0; count
--)
878 struct thread_info
*tp
;
879 step_once (skip_subroutines
, single_inst
, count
, thread
);
881 if (target_has_execution
882 && !ptid_equal (inferior_ptid
, null_ptid
))
883 tp
= inferior_thread ();
887 if (!tp
|| !tp
->stop_step
|| !tp
->step_multi
)
889 /* If we stopped for some reason that is not stepping
890 there are no further steps to make. */
897 do_cleanups (cleanups
);
901 /* In the case of an asynchronous target things get complicated;
902 do only one step for now, before returning control to the
903 event loop. Let the continuation figure out how many other
904 steps we need to do, and handle them one at the time, through
906 step_once (skip_subroutines
, single_inst
, count
, thread
);
908 /* We are running, and the continuation is installed. It will
909 disable the longjmp breakpoint as appropriate. */
910 discard_cleanups (cleanups
);
914 struct step_1_continuation_args
917 int skip_subroutines
;
922 /* Called after we are done with one step operation, to check whether
923 we need to step again, before we print the prompt and return control
924 to the user. If count is > 1, we will need to do one more call to
925 proceed(), via step_once(). Basically it is like step_once and
926 step_1_continuation are co-recursive. */
928 step_1_continuation (void *args
)
930 struct step_1_continuation_args
*a
= args
;
932 if (target_has_execution
)
934 struct thread_info
*tp
;
936 tp
= inferior_thread ();
937 if (tp
->step_multi
&& tp
->stop_step
)
939 /* There are more steps to make, and we did stop due to
940 ending a stepping range. Do another step. */
941 step_once (a
->skip_subroutines
, a
->single_inst
,
942 a
->count
- 1, a
->thread
);
948 /* We either stopped for some reason that is not stepping, or there
949 are no further steps to make. Cleanup. */
950 if (!a
->single_inst
|| a
->skip_subroutines
)
951 delete_longjmp_breakpoint (a
->thread
);
954 /* Do just one step operation. This is useful to implement the 'step
955 n' kind of commands. In case of asynchronous targets, we will have
956 to set up a continuation to be done after the target stops (after
957 this one step). For synch targets, the caller handles further
961 step_once (int skip_subroutines
, int single_inst
, int count
, int thread
)
963 struct frame_info
*frame
= get_current_frame ();
967 /* Don't assume THREAD is a valid thread id. It is set to -1 if
968 the longjmp breakpoint was not required. Use the
969 INFERIOR_PTID thread instead, which is the same thread when
971 struct thread_info
*tp
= inferior_thread ();
972 clear_proceed_status ();
979 /* Step at an inlined function behaves like "down". */
980 if (!skip_subroutines
&& !single_inst
981 && inline_skipped_frames (inferior_ptid
))
983 step_into_inline_frame (inferior_ptid
);
985 step_once (skip_subroutines
, single_inst
, count
- 1, thread
);
987 /* Pretend that we've stopped. */
992 pc
= get_frame_pc (frame
);
993 find_pc_line_pc_range (pc
,
994 &tp
->step_range_start
, &tp
->step_range_end
);
996 /* If we have no line info, switch to stepi mode. */
997 if (tp
->step_range_end
== 0 && step_stop_if_no_debug
)
998 tp
->step_range_start
= tp
->step_range_end
= 1;
999 else if (tp
->step_range_end
== 0)
1002 if (find_pc_partial_function (pc
, &name
,
1003 &tp
->step_range_start
,
1004 &tp
->step_range_end
) == 0)
1005 error (_("Cannot find bounds of current function"));
1007 target_terminal_ours ();
1008 printf_filtered (_("\
1009 Single stepping until exit from function %s, \n\
1010 which has no line number information.\n"), name
);
1015 /* Say we are stepping, but stop after one insn whatever it does. */
1016 tp
->step_range_start
= tp
->step_range_end
= 1;
1017 if (!skip_subroutines
)
1019 Don't step over function calls, not even to functions lacking
1021 tp
->step_over_calls
= STEP_OVER_NONE
;
1024 if (skip_subroutines
)
1025 tp
->step_over_calls
= STEP_OVER_ALL
;
1027 tp
->step_multi
= (count
> 1);
1028 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
1030 /* For async targets, register a continuation to do any
1031 additional steps. For sync targets, the caller will handle
1032 further stepping. */
1033 if (target_can_async_p ())
1035 struct step_1_continuation_args
*args
;
1037 args
= xmalloc (sizeof (*args
));
1038 args
->skip_subroutines
= skip_subroutines
;
1039 args
->single_inst
= single_inst
;
1040 args
->count
= count
;
1041 args
->thread
= thread
;
1043 add_intermediate_continuation (tp
, step_1_continuation
, args
, xfree
);
1049 /* Continue program at specified address. */
1052 jump_command (char *arg
, int from_tty
)
1054 struct gdbarch
*gdbarch
= get_current_arch ();
1056 struct symtabs_and_lines sals
;
1057 struct symtab_and_line sal
;
1063 ensure_not_tfind_mode ();
1064 ensure_valid_thread ();
1065 ensure_not_running ();
1067 /* Find out whether we must run in the background. */
1069 async_exec
= strip_bg_char (&arg
);
1071 /* If we must run in the background, but the target can't do it,
1073 if (async_exec
&& !target_can_async_p ())
1074 error (_("Asynchronous execution not supported on this target."));
1077 error_no_arg (_("starting address"));
1079 sals
= decode_line_spec_1 (arg
, 1);
1080 if (sals
.nelts
!= 1)
1082 error (_("Unreasonable jump request"));
1088 if (sal
.symtab
== 0 && sal
.pc
== 0)
1089 error (_("No source file has been specified."));
1091 resolve_sal_pc (&sal
); /* May error out */
1093 /* See if we are trying to jump to another function. */
1094 fn
= get_frame_function (get_current_frame ());
1095 sfn
= find_pc_function (sal
.pc
);
1096 if (fn
!= NULL
&& sfn
!= fn
)
1098 if (!query (_("Line %d is not in `%s'. Jump anyway? "), sal
.line
,
1099 SYMBOL_PRINT_NAME (fn
)))
1101 error (_("Not confirmed."));
1108 fixup_symbol_section (sfn
, 0);
1109 if (section_is_overlay (SYMBOL_OBJ_SECTION (sfn
)) &&
1110 !section_is_mapped (SYMBOL_OBJ_SECTION (sfn
)))
1112 if (!query (_("WARNING!!! Destination is in unmapped overlay! Jump anyway? ")))
1114 error (_("Not confirmed."));
1124 printf_filtered (_("Continuing at "));
1125 fputs_filtered (paddress (gdbarch
, addr
), gdb_stdout
);
1126 printf_filtered (".\n");
1129 /* If we are not asked to run in the bg, then prepare to run in the
1130 foreground, synchronously. */
1131 if (!async_exec
&& target_can_async_p ())
1133 /* Simulate synchronous execution */
1134 async_disable_stdin ();
1137 clear_proceed_status ();
1138 proceed (addr
, TARGET_SIGNAL_0
, 0);
1142 /* Go to line or address in current procedure */
1144 go_command (char *line_no
, int from_tty
)
1146 if (line_no
== (char *) NULL
|| !*line_no
)
1147 printf_filtered (_("Usage: go <location>\n"));
1150 tbreak_command (line_no
, from_tty
);
1151 jump_command (line_no
, from_tty
);
1156 /* Continue program giving it specified signal. */
1159 signal_command (char *signum_exp
, int from_tty
)
1161 enum target_signal oursig
;
1164 dont_repeat (); /* Too dangerous. */
1166 ensure_not_tfind_mode ();
1167 ensure_valid_thread ();
1168 ensure_not_running ();
1170 /* Find out whether we must run in the background. */
1171 if (signum_exp
!= NULL
)
1172 async_exec
= strip_bg_char (&signum_exp
);
1174 /* If we must run in the background, but the target can't do it,
1176 if (async_exec
&& !target_can_async_p ())
1177 error (_("Asynchronous execution not supported on this target."));
1179 /* If we are not asked to run in the bg, then prepare to run in the
1180 foreground, synchronously. */
1181 if (!async_exec
&& target_can_async_p ())
1183 /* Simulate synchronous execution. */
1184 async_disable_stdin ();
1188 error_no_arg (_("signal number"));
1190 /* It would be even slicker to make signal names be valid expressions,
1191 (the type could be "enum $signal" or some such), then the user could
1192 assign them to convenience variables. */
1193 oursig
= target_signal_from_name (signum_exp
);
1195 if (oursig
== TARGET_SIGNAL_UNKNOWN
)
1197 /* No, try numeric. */
1198 int num
= parse_and_eval_long (signum_exp
);
1201 oursig
= TARGET_SIGNAL_0
;
1203 oursig
= target_signal_from_command (num
);
1208 if (oursig
== TARGET_SIGNAL_0
)
1209 printf_filtered (_("Continuing with no signal.\n"));
1211 printf_filtered (_("Continuing with signal %s.\n"),
1212 target_signal_to_name (oursig
));
1215 clear_proceed_status ();
1216 proceed ((CORE_ADDR
) -1, oursig
, 0);
1219 /* Proceed until we reach a different source line with pc greater than
1220 our current one or exit the function. We skip calls in both cases.
1222 Note that eventually this command should probably be changed so
1223 that only source lines are printed out when we hit the breakpoint
1224 we set. This may involve changes to wait_for_inferior and the
1225 proceed status code. */
1228 until_next_command (int from_tty
)
1230 struct frame_info
*frame
;
1232 struct symbol
*func
;
1233 struct symtab_and_line sal
;
1234 struct thread_info
*tp
= inferior_thread ();
1236 clear_proceed_status ();
1239 frame
= get_current_frame ();
1241 /* Step until either exited from this function or greater
1242 than the current line (if in symbolic section) or pc (if
1245 pc
= get_frame_pc (frame
);
1246 func
= find_pc_function (pc
);
1250 struct minimal_symbol
*msymbol
= lookup_minimal_symbol_by_pc (pc
);
1252 if (msymbol
== NULL
)
1253 error (_("Execution is not within a known function."));
1255 tp
->step_range_start
= SYMBOL_VALUE_ADDRESS (msymbol
);
1256 tp
->step_range_end
= pc
;
1260 sal
= find_pc_line (pc
, 0);
1262 tp
->step_range_start
= BLOCK_START (SYMBOL_BLOCK_VALUE (func
));
1263 tp
->step_range_end
= sal
.end
;
1266 tp
->step_over_calls
= STEP_OVER_ALL
;
1268 tp
->step_multi
= 0; /* Only one call to proceed */
1270 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
1274 until_command (char *arg
, int from_tty
)
1279 ensure_not_tfind_mode ();
1280 ensure_valid_thread ();
1281 ensure_not_running ();
1283 /* Find out whether we must run in the background. */
1285 async_exec
= strip_bg_char (&arg
);
1287 /* If we must run in the background, but the target can't do it,
1289 if (async_exec
&& !target_can_async_p ())
1290 error (_("Asynchronous execution not supported on this target."));
1292 /* If we are not asked to run in the bg, then prepare to run in the
1293 foreground, synchronously. */
1294 if (!async_exec
&& target_can_async_p ())
1296 /* Simulate synchronous execution */
1297 async_disable_stdin ();
1301 until_break_command (arg
, from_tty
, 0);
1303 until_next_command (from_tty
);
1307 advance_command (char *arg
, int from_tty
)
1312 ensure_not_tfind_mode ();
1313 ensure_valid_thread ();
1314 ensure_not_running ();
1317 error_no_arg (_("a location"));
1319 /* Find out whether we must run in the background. */
1321 async_exec
= strip_bg_char (&arg
);
1323 /* If we must run in the background, but the target can't do it,
1325 if (async_exec
&& !target_can_async_p ())
1326 error (_("Asynchronous execution not supported on this target."));
1328 /* If we are not asked to run in the bg, then prepare to run in the
1329 foreground, synchronously. */
1330 if (!async_exec
&& target_can_async_p ())
1332 /* Simulate synchronous execution. */
1333 async_disable_stdin ();
1336 until_break_command (arg
, from_tty
, 1);
1339 /* Print the result of a function at the end of a 'finish' command. */
1342 print_return_value (struct type
*func_type
, struct type
*value_type
)
1344 struct gdbarch
*gdbarch
= get_regcache_arch (stop_registers
);
1345 struct cleanup
*old_chain
;
1346 struct ui_stream
*stb
;
1347 struct value
*value
;
1349 CHECK_TYPEDEF (value_type
);
1350 gdb_assert (TYPE_CODE (value_type
) != TYPE_CODE_VOID
);
1352 /* FIXME: 2003-09-27: When returning from a nested inferior function
1353 call, it's possible (with no help from the architecture vector)
1354 to locate and return/print a "struct return" value. This is just
1355 a more complicated case of what is already being done in in the
1356 inferior function call code. In fact, when inferior function
1357 calls are made async, this will likely be made the norm. */
1359 switch (gdbarch_return_value (gdbarch
, func_type
, value_type
,
1362 case RETURN_VALUE_REGISTER_CONVENTION
:
1363 case RETURN_VALUE_ABI_RETURNS_ADDRESS
:
1364 case RETURN_VALUE_ABI_PRESERVES_ADDRESS
:
1365 value
= allocate_value (value_type
);
1366 gdbarch_return_value (gdbarch
, func_type
, value_type
, stop_registers
,
1367 value_contents_raw (value
), NULL
);
1369 case RETURN_VALUE_STRUCT_CONVENTION
:
1373 internal_error (__FILE__
, __LINE__
, _("bad switch"));
1378 struct value_print_options opts
;
1381 stb
= ui_out_stream_new (uiout
);
1382 old_chain
= make_cleanup_ui_out_stream_delete (stb
);
1383 ui_out_text (uiout
, "Value returned is ");
1384 ui_out_field_fmt (uiout
, "gdb-result-var", "$%d",
1385 record_latest_value (value
));
1386 ui_out_text (uiout
, " = ");
1387 get_raw_print_options (&opts
);
1388 value_print (value
, stb
->stream
, &opts
);
1389 ui_out_field_stream (uiout
, "return-value", stb
);
1390 ui_out_text (uiout
, "\n");
1391 do_cleanups (old_chain
);
1395 ui_out_text (uiout
, "Value returned has type: ");
1396 ui_out_field_string (uiout
, "return-type", TYPE_NAME (value_type
));
1397 ui_out_text (uiout
, ".");
1398 ui_out_text (uiout
, " Cannot determine contents\n");
1402 /* Stuff that needs to be done by the finish command after the target
1403 has stopped. In asynchronous mode, we wait for the target to stop
1404 in the call to poll or select in the event loop, so it is
1405 impossible to do all the stuff as part of the finish_command
1406 function itself. The only chance we have to complete this command
1407 is in fetch_inferior_event, which is called by the event loop as
1408 soon as it detects that the target has stopped. This function is
1409 called via the cmd_continuation pointer. */
1411 struct finish_command_continuation_args
1413 struct breakpoint
*breakpoint
;
1414 struct symbol
*function
;
1418 finish_command_continuation (void *arg
)
1420 struct finish_command_continuation_args
*a
= arg
;
1421 struct thread_info
*tp
= NULL
;
1424 if (!ptid_equal (inferior_ptid
, null_ptid
)
1425 && target_has_execution
1426 && is_stopped (inferior_ptid
))
1428 tp
= inferior_thread ();
1429 bs
= tp
->stop_bpstat
;
1432 if (bpstat_find_breakpoint (bs
, a
->breakpoint
) != NULL
1433 && a
->function
!= NULL
)
1435 struct type
*value_type
;
1437 value_type
= TYPE_TARGET_TYPE (SYMBOL_TYPE (a
->function
));
1439 internal_error (__FILE__
, __LINE__
,
1440 _("finish_command: function has no target type"));
1442 if (TYPE_CODE (value_type
) != TYPE_CODE_VOID
)
1444 volatile struct gdb_exception ex
;
1446 TRY_CATCH (ex
, RETURN_MASK_ALL
)
1448 /* print_return_value can throw an exception in some
1449 circumstances. We need to catch this so that we still
1450 delete the breakpoint. */
1451 print_return_value (SYMBOL_TYPE (a
->function
), value_type
);
1454 exception_print (gdb_stdout
, ex
);
1458 /* We suppress normal call of normal_stop observer and do it here so
1459 that the *stopped notification includes the return value. */
1460 if (bs
!= NULL
&& tp
->proceed_to_finish
)
1461 observer_notify_normal_stop (bs
, 1 /* print frame */);
1462 delete_breakpoint (a
->breakpoint
);
1466 finish_command_continuation_free_arg (void *arg
)
1471 /* finish_backward -- helper function for finish_command. */
1474 finish_backward (struct symbol
*function
)
1476 struct symtab_and_line sal
;
1477 struct thread_info
*tp
= inferior_thread ();
1478 struct breakpoint
*breakpoint
;
1479 struct cleanup
*old_chain
;
1481 CORE_ADDR func_addr
;
1484 pc
= get_frame_pc (get_current_frame ());
1486 if (find_pc_partial_function (pc
, NULL
, &func_addr
, NULL
) == 0)
1487 internal_error (__FILE__
, __LINE__
,
1488 _("Finish: couldn't find function."));
1490 sal
= find_pc_line (func_addr
, 0);
1492 /* We don't need a return value. */
1493 tp
->proceed_to_finish
= 0;
1494 /* Special case: if we're sitting at the function entry point,
1495 then all we need to do is take a reverse singlestep. We
1496 don't need to set a breakpoint, and indeed it would do us
1499 Note that this can only happen at frame #0, since there's
1500 no way that a function up the stack can have a return address
1501 that's equal to its entry point. */
1505 struct frame_info
*frame
= get_selected_frame (NULL
);
1506 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
1508 /* Set breakpoint and continue. */
1510 set_momentary_breakpoint (gdbarch
, sal
,
1511 get_stack_frame_id (frame
),
1513 /* Tell the breakpoint to keep quiet. We won't be done
1514 until we've done another reverse single-step. */
1515 make_breakpoint_silent (breakpoint
);
1516 old_chain
= make_cleanup_delete_breakpoint (breakpoint
);
1517 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
1518 /* We will be stopped when proceed returns. */
1519 back_up
= bpstat_find_breakpoint (tp
->stop_bpstat
, breakpoint
) != NULL
;
1520 do_cleanups (old_chain
);
1526 /* If in fact we hit the step-resume breakpoint (and not
1527 some other breakpoint), then we're almost there --
1528 we just need to back up by one more single-step. */
1529 tp
->step_range_start
= tp
->step_range_end
= 1;
1530 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
1535 /* finish_forward -- helper function for finish_command. */
1538 finish_forward (struct symbol
*function
, struct frame_info
*frame
)
1540 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
1541 struct symtab_and_line sal
;
1542 struct thread_info
*tp
= inferior_thread ();
1543 struct breakpoint
*breakpoint
;
1544 struct cleanup
*old_chain
;
1545 struct finish_command_continuation_args
*cargs
;
1547 sal
= find_pc_line (get_frame_pc (frame
), 0);
1548 sal
.pc
= get_frame_pc (frame
);
1550 breakpoint
= set_momentary_breakpoint (gdbarch
, sal
,
1551 get_stack_frame_id (frame
),
1554 old_chain
= make_cleanup_delete_breakpoint (breakpoint
);
1556 tp
->proceed_to_finish
= 1; /* We want stop_registers, please... */
1557 cargs
= xmalloc (sizeof (*cargs
));
1559 cargs
->breakpoint
= breakpoint
;
1560 cargs
->function
= function
;
1561 add_continuation (tp
, finish_command_continuation
, cargs
,
1562 finish_command_continuation_free_arg
);
1563 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
1565 discard_cleanups (old_chain
);
1566 if (!target_can_async_p ())
1567 do_all_continuations ();
1570 /* "finish": Set a temporary breakpoint at the place the selected
1571 frame will return to, then continue. */
1574 finish_command (char *arg
, int from_tty
)
1576 struct frame_info
*frame
;
1577 struct symbol
*function
;
1582 ensure_not_tfind_mode ();
1583 ensure_valid_thread ();
1584 ensure_not_running ();
1586 /* Find out whether we must run in the background. */
1588 async_exec
= strip_bg_char (&arg
);
1590 /* If we must run in the background, but the target can't do it,
1592 if (async_exec
&& !target_can_async_p ())
1593 error (_("Asynchronous execution not supported on this target."));
1595 /* Don't try to async in reverse. */
1596 if (async_exec
&& execution_direction
== EXEC_REVERSE
)
1597 error (_("Asynchronous 'finish' not supported in reverse."));
1599 /* If we are not asked to run in the bg, then prepare to run in the
1600 foreground, synchronously. */
1601 if (!async_exec
&& target_can_async_p ())
1603 /* Simulate synchronous execution. */
1604 async_disable_stdin ();
1608 error (_("The \"finish\" command does not take any arguments."));
1610 frame
= get_prev_frame (get_selected_frame (_("No selected frame.")));
1612 error (_("\"finish\" not meaningful in the outermost frame."));
1614 clear_proceed_status ();
1616 /* Finishing from an inline frame is completely different. We don't
1617 try to show the "return value" - no way to locate it. So we do
1618 not need a completion. */
1619 if (get_frame_type (get_selected_frame (_("No selected frame.")))
1622 /* Claim we are stepping in the calling frame. An empty step
1623 range means that we will stop once we aren't in a function
1624 called by that frame. We don't use the magic "1" value for
1625 step_range_end, because then infrun will think this is nexti,
1626 and not step over the rest of this inlined function call. */
1627 struct thread_info
*tp
= inferior_thread ();
1628 struct symtab_and_line empty_sal
;
1629 init_sal (&empty_sal
);
1630 set_step_info (frame
, empty_sal
);
1631 tp
->step_range_start
= tp
->step_range_end
= get_frame_pc (frame
);
1632 tp
->step_over_calls
= STEP_OVER_ALL
;
1634 /* Print info on the selected frame, including level number but not
1638 printf_filtered (_("Run till exit from "));
1639 print_stack_frame (get_selected_frame (NULL
), 1, LOCATION
);
1642 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
1646 /* Find the function we will return from. */
1648 function
= find_pc_function (get_frame_pc (get_selected_frame (NULL
)));
1650 /* Print info on the selected frame, including level number but not
1654 if (execution_direction
== EXEC_REVERSE
)
1655 printf_filtered (_("Run back to call of "));
1657 printf_filtered (_("Run till exit from "));
1659 print_stack_frame (get_selected_frame (NULL
), 1, LOCATION
);
1662 if (execution_direction
== EXEC_REVERSE
)
1663 finish_backward (function
);
1665 finish_forward (function
, frame
);
1670 program_info (char *args
, int from_tty
)
1674 struct thread_info
*tp
;
1677 if (!target_has_execution
)
1679 printf_filtered (_("The program being debugged is not being run.\n"));
1684 ptid
= inferior_ptid
;
1687 struct target_waitstatus ws
;
1688 get_last_target_status (&ptid
, &ws
);
1691 if (ptid_equal (ptid
, null_ptid
) || is_exited (ptid
))
1692 error (_("Invalid selected thread."));
1693 else if (is_running (ptid
))
1694 error (_("Selected thread is running."));
1696 tp
= find_thread_ptid (ptid
);
1697 bs
= tp
->stop_bpstat
;
1698 stat
= bpstat_num (&bs
, &num
);
1700 target_files_info ();
1701 printf_filtered (_("Program stopped at %s.\n"),
1702 paddress (target_gdbarch
, stop_pc
));
1704 printf_filtered (_("It stopped after being stepped.\n"));
1707 /* There may be several breakpoints in the same place, so this
1708 isn't as strange as it seems. */
1713 printf_filtered (_("\
1714 It stopped at a breakpoint that has since been deleted.\n"));
1717 printf_filtered (_("It stopped at breakpoint %d.\n"), num
);
1718 stat
= bpstat_num (&bs
, &num
);
1721 else if (tp
->stop_signal
!= TARGET_SIGNAL_0
)
1723 printf_filtered (_("It stopped with signal %s, %s.\n"),
1724 target_signal_to_name (tp
->stop_signal
),
1725 target_signal_to_string (tp
->stop_signal
));
1730 printf_filtered (_("\
1731 Type \"info stack\" or \"info registers\" for more information.\n"));
1736 environment_info (char *var
, int from_tty
)
1740 char *val
= get_in_environ (current_inferior ()->environment
, var
);
1743 puts_filtered (var
);
1744 puts_filtered (" = ");
1745 puts_filtered (val
);
1746 puts_filtered ("\n");
1750 puts_filtered ("Environment variable \"");
1751 puts_filtered (var
);
1752 puts_filtered ("\" not defined.\n");
1757 char **vector
= environ_vector (current_inferior ()->environment
);
1760 puts_filtered (*vector
++);
1761 puts_filtered ("\n");
1767 set_environment_command (char *arg
, int from_tty
)
1769 char *p
, *val
, *var
;
1773 error_no_arg (_("environment variable and value"));
1775 /* Find seperation between variable name and value */
1776 p
= (char *) strchr (arg
, '=');
1777 val
= (char *) strchr (arg
, ' ');
1779 if (p
!= 0 && val
!= 0)
1781 /* We have both a space and an equals. If the space is before the
1782 equals, walk forward over the spaces til we see a nonspace
1783 (possibly the equals). */
1788 /* Now if the = is after the char following the spaces,
1789 take the char following the spaces. */
1793 else if (val
!= 0 && p
== 0)
1797 error_no_arg (_("environment variable to set"));
1799 if (p
== 0 || p
[1] == 0)
1803 p
= arg
+ strlen (arg
); /* So that savestring below will work */
1807 /* Not setting variable value to null */
1809 while (*val
== ' ' || *val
== '\t')
1813 while (p
!= arg
&& (p
[-1] == ' ' || p
[-1] == '\t'))
1816 var
= savestring (arg
, p
- arg
);
1819 printf_filtered (_("\
1820 Setting environment variable \"%s\" to null value.\n"),
1822 set_in_environ (current_inferior ()->environment
, var
, "");
1825 set_in_environ (current_inferior ()->environment
, var
, val
);
1830 unset_environment_command (char *var
, int from_tty
)
1834 /* If there is no argument, delete all environment variables.
1835 Ask for confirmation if reading from the terminal. */
1836 if (!from_tty
|| query (_("Delete all environment variables? ")))
1838 free_environ (current_inferior ()->environment
);
1839 current_inferior ()->environment
= make_environ ();
1843 unset_in_environ (current_inferior ()->environment
, var
);
1846 /* Handle the execution path (PATH variable) */
1848 static const char path_var_name
[] = "PATH";
1851 path_info (char *args
, int from_tty
)
1853 puts_filtered ("Executable and object file path: ");
1854 puts_filtered (get_in_environ (current_inferior ()->environment
, path_var_name
));
1855 puts_filtered ("\n");
1858 /* Add zero or more directories to the front of the execution path. */
1861 path_command (char *dirname
, int from_tty
)
1866 env
= get_in_environ (current_inferior ()->environment
, path_var_name
);
1867 /* Can be null if path is not set */
1870 exec_path
= xstrdup (env
);
1871 mod_path (dirname
, &exec_path
);
1872 set_in_environ (current_inferior ()->environment
, path_var_name
, exec_path
);
1875 path_info ((char *) NULL
, from_tty
);
1879 /* Print out the machine register regnum. If regnum is -1, print all
1880 registers (print_all == 1) or all non-float and non-vector
1881 registers (print_all == 0).
1883 For most machines, having all_registers_info() print the
1884 register(s) one per line is good enough. If a different format is
1885 required, (eg, for MIPS or Pyramid 90x, which both have lots of
1886 regs), or there is an existing convention for showing all the
1887 registers, define the architecture method PRINT_REGISTERS_INFO to
1888 provide that format. */
1891 default_print_registers_info (struct gdbarch
*gdbarch
,
1892 struct ui_file
*file
,
1893 struct frame_info
*frame
,
1894 int regnum
, int print_all
)
1897 const int numregs
= gdbarch_num_regs (gdbarch
)
1898 + gdbarch_num_pseudo_regs (gdbarch
);
1899 gdb_byte buffer
[MAX_REGISTER_SIZE
];
1901 for (i
= 0; i
< numregs
; i
++)
1903 /* Decide between printing all regs, non-float / vector regs, or
1909 if (!gdbarch_register_reggroup_p (gdbarch
, i
, all_reggroup
))
1914 if (!gdbarch_register_reggroup_p (gdbarch
, i
, general_reggroup
))
1924 /* If the register name is empty, it is undefined for this
1925 processor, so don't display anything. */
1926 if (gdbarch_register_name (gdbarch
, i
) == NULL
1927 || *(gdbarch_register_name (gdbarch
, i
)) == '\0')
1930 fputs_filtered (gdbarch_register_name (gdbarch
, i
), file
);
1931 print_spaces_filtered (15 - strlen (gdbarch_register_name
1932 (gdbarch
, i
)), file
);
1934 /* Get the data in raw format. */
1935 if (! frame_register_read (frame
, i
, buffer
))
1937 fprintf_filtered (file
, "*value not available*\n");
1941 /* If virtual format is floating, print it that way, and in raw
1943 if (TYPE_CODE (register_type (gdbarch
, i
)) == TYPE_CODE_FLT
1944 || TYPE_CODE (register_type (gdbarch
, i
)) == TYPE_CODE_DECFLOAT
)
1947 struct value_print_options opts
;
1949 get_user_print_options (&opts
);
1951 val_print (register_type (gdbarch
, i
), buffer
, 0, 0,
1952 file
, 0, &opts
, current_language
);
1954 fprintf_filtered (file
, "\t(raw 0x");
1955 for (j
= 0; j
< register_size (gdbarch
, i
); j
++)
1958 if (gdbarch_byte_order (gdbarch
) == BFD_ENDIAN_BIG
)
1961 idx
= register_size (gdbarch
, i
) - 1 - j
;
1962 fprintf_filtered (file
, "%02x", (unsigned char) buffer
[idx
]);
1964 fprintf_filtered (file
, ")");
1968 struct value_print_options opts
;
1970 /* Print the register in hex. */
1971 get_formatted_print_options (&opts
, 'x');
1973 val_print (register_type (gdbarch
, i
), buffer
, 0, 0,
1976 /* If not a vector register, print it also according to its
1978 if (TYPE_VECTOR (register_type (gdbarch
, i
)) == 0)
1980 get_user_print_options (&opts
);
1982 fprintf_filtered (file
, "\t");
1983 val_print (register_type (gdbarch
, i
), buffer
, 0, 0,
1984 file
, 0, &opts
, current_language
);
1988 fprintf_filtered (file
, "\n");
1993 registers_info (char *addr_exp
, int fpregs
)
1995 struct frame_info
*frame
;
1996 struct gdbarch
*gdbarch
;
1997 int regnum
, numregs
;
2000 if (!target_has_registers
)
2001 error (_("The program has no registers now."));
2002 frame
= get_selected_frame (NULL
);
2003 gdbarch
= get_frame_arch (frame
);
2007 gdbarch_print_registers_info (gdbarch
, gdb_stdout
,
2012 while (*addr_exp
!= '\0')
2017 /* Keep skipping leading white space. */
2018 if (isspace ((*addr_exp
)))
2024 /* Discard any leading ``$''. Check that there is something
2025 resembling a register following it. */
2026 if (addr_exp
[0] == '$')
2028 if (isspace ((*addr_exp
)) || (*addr_exp
) == '\0')
2029 error (_("Missing register name"));
2031 /* Find the start/end of this register name/num/group. */
2033 while ((*addr_exp
) != '\0' && !isspace ((*addr_exp
)))
2037 /* Figure out what we've found and display it. */
2039 /* A register name? */
2041 int regnum
= user_reg_map_name_to_regnum (gdbarch
, start
, end
- start
);
2044 /* User registers lie completely outside of the range of
2045 normal registers. Catch them early so that the target
2047 if (regnum
>= gdbarch_num_regs (gdbarch
)
2048 + gdbarch_num_pseudo_regs (gdbarch
))
2050 struct value_print_options opts
;
2051 struct value
*val
= value_of_user_reg (regnum
, frame
);
2053 printf_filtered ("%s: ", start
);
2054 get_formatted_print_options (&opts
, 'x');
2055 print_scalar_formatted (value_contents (val
),
2056 check_typedef (value_type (val
)),
2057 &opts
, 0, gdb_stdout
);
2058 printf_filtered ("\n");
2061 gdbarch_print_registers_info (gdbarch
, gdb_stdout
,
2062 frame
, regnum
, fpregs
);
2067 /* A register group? */
2069 struct reggroup
*group
;
2070 for (group
= reggroup_next (gdbarch
, NULL
);
2072 group
= reggroup_next (gdbarch
, group
))
2074 /* Don't bother with a length check. Should the user
2075 enter a short register group name, go with the first
2076 group that matches. */
2077 if (strncmp (start
, reggroup_name (group
), end
- start
) == 0)
2084 regnum
< gdbarch_num_regs (gdbarch
)
2085 + gdbarch_num_pseudo_regs (gdbarch
);
2088 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, group
))
2089 gdbarch_print_registers_info (gdbarch
,
2097 /* Nothing matched. */
2098 error (_("Invalid register `%.*s'"), (int) (end
- start
), start
);
2103 all_registers_info (char *addr_exp
, int from_tty
)
2105 registers_info (addr_exp
, 1);
2109 nofp_registers_info (char *addr_exp
, int from_tty
)
2111 registers_info (addr_exp
, 0);
2115 print_vector_info (struct ui_file
*file
,
2116 struct frame_info
*frame
, const char *args
)
2118 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
2120 if (gdbarch_print_vector_info_p (gdbarch
))
2121 gdbarch_print_vector_info (gdbarch
, file
, frame
, args
);
2125 int printed_something
= 0;
2128 regnum
< gdbarch_num_regs (gdbarch
)
2129 + gdbarch_num_pseudo_regs (gdbarch
);
2132 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, vector_reggroup
))
2134 printed_something
= 1;
2135 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
2138 if (!printed_something
)
2139 fprintf_filtered (file
, "No vector information\n");
2144 vector_info (char *args
, int from_tty
)
2146 if (!target_has_registers
)
2147 error (_("The program has no registers now."));
2149 print_vector_info (gdb_stdout
, get_selected_frame (NULL
), args
);
2152 /* Kill the inferior process. Make us have no inferior. */
2155 kill_command (char *arg
, int from_tty
)
2157 /* FIXME: This should not really be inferior_ptid (or target_has_execution).
2158 It should be a distinct flag that indicates that a target is active, cuz
2159 some targets don't have processes! */
2161 if (ptid_equal (inferior_ptid
, null_ptid
))
2162 error (_("The program is not being run."));
2163 if (!query (_("Kill the program being debugged? ")))
2164 error (_("Not confirmed."));
2167 /* If we still have other inferiors to debug, then don't mess with
2168 with their threads. */
2169 if (!have_inferiors ())
2171 init_thread_list (); /* Destroy thread info */
2173 /* Killing off the inferior can leave us with a core file. If
2174 so, print the state we are left in. */
2175 if (target_has_stack
)
2177 printf_filtered (_("In %s,\n"), target_longname
);
2178 print_stack_frame (get_selected_frame (NULL
), 1, SRC_AND_LOC
);
2181 bfd_cache_close_all ();
2184 /* Used in `attach&' command. ARG is a point to an integer
2185 representing a process id. Proceed threads of this process iff
2186 they stopped due to debugger request, and when they did, they
2187 reported a clean stop (TARGET_SIGNAL_0). Do not proceed threads
2188 that have been explicitly been told to stop. */
2191 proceed_after_attach_callback (struct thread_info
*thread
,
2194 int pid
= * (int *) arg
;
2196 if (ptid_get_pid (thread
->ptid
) == pid
2197 && !is_exited (thread
->ptid
)
2198 && !is_executing (thread
->ptid
)
2199 && !thread
->stop_requested
2200 && thread
->stop_signal
== TARGET_SIGNAL_0
)
2202 switch_to_thread (thread
->ptid
);
2203 clear_proceed_status ();
2204 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
2211 proceed_after_attach (int pid
)
2213 /* Don't error out if the current thread is running, because
2214 there may be other stopped threads. */
2215 struct cleanup
*old_chain
;
2217 /* Backup current thread and selected frame. */
2218 old_chain
= make_cleanup_restore_current_thread ();
2220 iterate_over_threads (proceed_after_attach_callback
, &pid
);
2222 /* Restore selected ptid. */
2223 do_cleanups (old_chain
);
2228 * Should save/restore the tty state since it might be that the
2229 * program to be debugged was started on this tty and it wants
2230 * the tty in some state other than what we want. If it's running
2231 * on another terminal or without a terminal, then saving and
2232 * restoring the tty state is a harmless no-op.
2233 * This only needs to be done if we are attaching to a process.
2238 takes a program started up outside of gdb and ``attaches'' to it.
2239 This stops it cold in its tracks and allows us to start debugging it.
2240 and wait for the trace-trap that results from attaching. */
2243 attach_command_post_wait (char *args
, int from_tty
, int async_exec
)
2246 char *full_exec_path
= NULL
;
2247 struct inferior
*inferior
;
2249 inferior
= current_inferior ();
2250 inferior
->stop_soon
= NO_STOP_QUIETLY
;
2252 /* If no exec file is yet known, try to determine it from the
2254 exec_file
= (char *) get_exec_file (0);
2257 exec_file
= target_pid_to_exec_file (PIDGET (inferior_ptid
));
2260 /* It's possible we don't have a full path, but rather just a
2261 filename. Some targets, such as HP-UX, don't provide the
2264 Attempt to qualify the filename against the source path.
2265 (If that fails, we'll just fall back on the original
2266 filename. Not much more we can do...)
2268 if (!source_full_path_of (exec_file
, &full_exec_path
))
2269 full_exec_path
= xstrdup (exec_file
);
2271 exec_file_attach (full_exec_path
, from_tty
);
2272 symbol_file_add_main (full_exec_path
, from_tty
);
2277 reopen_exec_file ();
2281 /* Take any necessary post-attaching actions for this platform. */
2282 target_post_attach (PIDGET (inferior_ptid
));
2284 post_create_inferior (¤t_target
, from_tty
);
2286 /* Install inferior's terminal modes. */
2287 target_terminal_inferior ();
2291 /* The user requested an `attach&', so be sure to leave threads
2292 that didn't get a signal running. */
2294 /* Immediatelly resume all suspended threads of this inferior,
2295 and this inferior only. This should have no effect on
2296 already running threads. If a thread has been stopped with a
2297 signal, leave it be. */
2299 proceed_after_attach (inferior
->pid
);
2302 if (inferior_thread ()->stop_signal
== TARGET_SIGNAL_0
)
2304 clear_proceed_status ();
2305 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
2311 /* The user requested a plain `attach', so be sure to leave
2312 the inferior stopped. */
2314 if (target_can_async_p ())
2315 async_enable_stdin ();
2317 /* At least the current thread is already stopped. */
2319 /* In all-stop, by definition, all threads have to be already
2320 stopped at this point. In non-stop, however, although the
2321 selected thread is stopped, others may still be executing.
2322 Be sure to explicitly stop all threads of the process. This
2323 should have no effect on already stopped threads. */
2325 target_stop (pid_to_ptid (inferior
->pid
));
2327 /* Tell the user/frontend where we're stopped. */
2329 if (deprecated_attach_hook
)
2330 deprecated_attach_hook ();
2334 struct attach_command_continuation_args
2342 attach_command_continuation (void *args
)
2344 struct attach_command_continuation_args
*a
= args
;
2345 attach_command_post_wait (a
->args
, a
->from_tty
, a
->async_exec
);
2349 attach_command_continuation_free_args (void *args
)
2351 struct attach_command_continuation_args
*a
= args
;
2357 attach_command (char *args
, int from_tty
)
2360 char *full_exec_path
= NULL
;
2362 struct cleanup
*back_to
= make_cleanup (null_cleanup
, NULL
);
2364 dont_repeat (); /* Not for the faint of heart */
2366 if (gdbarch_has_global_solist (target_gdbarch
))
2367 /* Don't complain if all processes share the same symbol
2370 else if (target_has_execution
)
2372 if (query (_("A program is being debugged already. Kill it? ")))
2375 error (_("Not killed."));
2378 /* Clean up any leftovers from other runs. Some other things from
2379 this function should probably be moved into target_pre_inferior. */
2380 target_pre_inferior (from_tty
);
2382 if (non_stop
&& !target_supports_non_stop ())
2383 error (_("Cannot attach to this target in non-stop mode"));
2387 async_exec
= strip_bg_char (&args
);
2389 /* If we get a request for running in the bg but the target
2390 doesn't support it, error out. */
2391 if (async_exec
&& !target_can_async_p ())
2392 error (_("Asynchronous execution not supported on this target."));
2395 /* If we don't get a request of running in the bg, then we need
2396 to simulate synchronous (fg) execution. */
2397 if (!async_exec
&& target_can_async_p ())
2399 /* Simulate synchronous execution */
2400 async_disable_stdin ();
2401 make_cleanup ((make_cleanup_ftype
*)async_enable_stdin
, NULL
);
2404 target_attach (args
, from_tty
);
2406 /* Set up the "saved terminal modes" of the inferior
2407 based on what modes we are starting it with. */
2408 target_terminal_init ();
2410 /* Set up execution context to know that we should return from
2411 wait_for_inferior as soon as the target reports a stop. */
2412 init_wait_for_inferior ();
2413 clear_proceed_status ();
2417 /* If we find that the current thread isn't stopped, explicitly
2418 do so now, because we're going to install breakpoints and
2422 /* The user requested an `attach&'; stop just one thread. */
2423 target_stop (inferior_ptid
);
2425 /* The user requested an `attach', so stop all threads of this
2427 target_stop (pid_to_ptid (ptid_get_pid (inferior_ptid
)));
2430 /* Some system don't generate traps when attaching to inferior.
2431 E.g. Mach 3 or GNU hurd. */
2432 if (!target_attach_no_wait
)
2434 struct inferior
*inferior
= current_inferior ();
2436 /* Careful here. See comments in inferior.h. Basically some
2437 OSes don't ignore SIGSTOPs on continue requests anymore. We
2438 need a way for handle_inferior_event to reset the stop_signal
2439 variable after an attach, and this is what
2440 STOP_QUIETLY_NO_SIGSTOP is for. */
2441 inferior
->stop_soon
= STOP_QUIETLY_NO_SIGSTOP
;
2443 if (target_can_async_p ())
2445 /* sync_execution mode. Wait for stop. */
2446 struct attach_command_continuation_args
*a
;
2448 a
= xmalloc (sizeof (*a
));
2449 a
->args
= xstrdup (args
);
2450 a
->from_tty
= from_tty
;
2451 a
->async_exec
= async_exec
;
2452 add_inferior_continuation (attach_command_continuation
, a
,
2453 attach_command_continuation_free_args
);
2454 discard_cleanups (back_to
);
2458 wait_for_inferior (0);
2461 attach_command_post_wait (args
, from_tty
, async_exec
);
2462 discard_cleanups (back_to
);
2465 /* We had just found out that the target was already attached to an
2466 inferior. PTID points at a thread of this new inferior, that is
2467 the most likely to be stopped right now, but not necessarily so.
2468 The new inferior is assumed to be already added to the inferior
2469 list at this point. If LEAVE_RUNNING, then leave the threads of
2470 this inferior running, except those we've explicitly seen reported
2474 notice_new_inferior (ptid_t ptid
, int leave_running
, int from_tty
)
2476 struct cleanup
* old_chain
;
2479 old_chain
= make_cleanup (null_cleanup
, NULL
);
2481 /* If in non-stop, leave threads as running as they were. If
2482 they're stopped for some reason other than us telling it to, the
2483 target reports a signal != TARGET_SIGNAL_0. We don't try to
2484 resume threads with such a stop signal. */
2485 async_exec
= non_stop
;
2487 if (!ptid_equal (inferior_ptid
, null_ptid
))
2488 make_cleanup_restore_current_thread ();
2490 switch_to_thread (ptid
);
2492 /* When we "notice" a new inferior we need to do all the things we
2493 would normally do if we had just attached to it. */
2495 if (is_executing (inferior_ptid
))
2497 struct inferior
*inferior
= current_inferior ();
2499 /* We're going to install breakpoints, and poke at memory,
2500 ensure that the inferior is stopped for a moment while we do
2502 target_stop (inferior_ptid
);
2504 inferior
->stop_soon
= STOP_QUIETLY_REMOTE
;
2506 /* Wait for stop before proceeding. */
2507 if (target_can_async_p ())
2509 struct attach_command_continuation_args
*a
;
2511 a
= xmalloc (sizeof (*a
));
2512 a
->args
= xstrdup ("");
2513 a
->from_tty
= from_tty
;
2514 a
->async_exec
= async_exec
;
2515 add_inferior_continuation (attach_command_continuation
, a
,
2516 attach_command_continuation_free_args
);
2518 do_cleanups (old_chain
);
2522 wait_for_inferior (0);
2525 async_exec
= leave_running
;
2526 attach_command_post_wait ("" /* args */, from_tty
, async_exec
);
2528 do_cleanups (old_chain
);
2533 * takes a program previously attached to and detaches it.
2534 * The program resumes execution and will no longer stop
2535 * on signals, etc. We better not have left any breakpoints
2536 * in the program or it'll die when it hits one. For this
2537 * to work, it may be necessary for the process to have been
2538 * previously attached. It *might* work if the program was
2539 * started via the normal ptrace (PTRACE_TRACEME).
2543 detach_command (char *args
, int from_tty
)
2545 dont_repeat (); /* Not for the faint of heart. */
2547 if (ptid_equal (inferior_ptid
, null_ptid
))
2548 error (_("The program is not being run."));
2550 disconnect_tracing (from_tty
);
2552 target_detach (args
, from_tty
);
2554 /* If the solist is global across inferiors, don't clear it when we
2555 detach from a single inferior. */
2556 if (!gdbarch_has_global_solist (target_gdbarch
))
2557 no_shared_libraries (NULL
, from_tty
);
2559 /* If we still have inferiors to debug, then don't mess with their
2561 if (!have_inferiors ())
2562 init_thread_list ();
2564 if (deprecated_detach_hook
)
2565 deprecated_detach_hook ();
2568 /* Disconnect from the current target without resuming it (leaving it
2569 waiting for a debugger).
2571 We'd better not have left any breakpoints in the program or the
2572 next debugger will get confused. Currently only supported for some
2573 remote targets, since the normal attach mechanisms don't work on
2574 stopped processes on some native platforms (e.g. GNU/Linux). */
2577 disconnect_command (char *args
, int from_tty
)
2579 dont_repeat (); /* Not for the faint of heart */
2580 target_disconnect (args
, from_tty
);
2581 no_shared_libraries (NULL
, from_tty
);
2582 init_thread_list ();
2583 if (deprecated_detach_hook
)
2584 deprecated_detach_hook ();
2588 interrupt_target_1 (int all_threads
)
2592 ptid
= minus_one_ptid
;
2594 ptid
= inferior_ptid
;
2597 /* Tag the thread as having been explicitly requested to stop, so
2598 other parts of gdb know not to resume this thread automatically,
2599 if it was stopped due to an internal event. Limit this to
2600 non-stop mode, as when debugging a multi-threaded application in
2601 all-stop mode, we will only get one stop event --- it's undefined
2602 which thread will report the event. */
2604 set_stop_requested (ptid
, 1);
2607 /* Stop the execution of the target while running in async mode, in
2608 the backgound. In all-stop, stop the whole process. In non-stop
2609 mode, stop the current thread only by default, or stop all threads
2610 if the `-a' switch is used. */
2612 /* interrupt [-a] */
2614 interrupt_target_command (char *args
, int from_tty
)
2616 if (target_can_async_p ())
2618 int all_threads
= 0;
2620 dont_repeat (); /* Not for the faint of heart */
2623 && strncmp (args
, "-a", sizeof ("-a") - 1) == 0)
2626 if (!non_stop
&& all_threads
)
2627 error (_("-a is meaningless in all-stop mode."));
2629 interrupt_target_1 (all_threads
);
2634 print_float_info (struct ui_file
*file
,
2635 struct frame_info
*frame
, const char *args
)
2637 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
2639 if (gdbarch_print_float_info_p (gdbarch
))
2640 gdbarch_print_float_info (gdbarch
, file
, frame
, args
);
2644 int printed_something
= 0;
2647 regnum
< gdbarch_num_regs (gdbarch
)
2648 + gdbarch_num_pseudo_regs (gdbarch
);
2651 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, float_reggroup
))
2653 printed_something
= 1;
2654 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
2657 if (!printed_something
)
2658 fprintf_filtered (file
, "\
2659 No floating-point info available for this processor.\n");
2664 float_info (char *args
, int from_tty
)
2666 if (!target_has_registers
)
2667 error (_("The program has no registers now."));
2669 print_float_info (gdb_stdout
, get_selected_frame (NULL
), args
);
2673 unset_command (char *args
, int from_tty
)
2675 printf_filtered (_("\
2676 \"unset\" must be followed by the name of an unset subcommand.\n"));
2677 help_list (unsetlist
, "unset ", -1, gdb_stdout
);
2681 _initialize_infcmd (void)
2683 struct cmd_list_element
*c
= NULL
;
2685 /* add the filename of the terminal connected to inferior I/O */
2686 add_setshow_filename_cmd ("inferior-tty", class_run
,
2687 &inferior_io_terminal_scratch
, _("\
2688 Set terminal for future runs of program being debugged."), _("\
2689 Show terminal for future runs of program being debugged."), _("\
2690 Usage: set inferior-tty /dev/pts/1"),
2691 set_inferior_tty_command
,
2692 show_inferior_tty_command
,
2693 &setlist
, &showlist
);
2694 add_com_alias ("tty", "set inferior-tty", class_alias
, 0);
2696 add_setshow_optional_filename_cmd ("args", class_run
,
2697 &inferior_args_scratch
, _("\
2698 Set argument list to give program being debugged when it is started."), _("\
2699 Show argument list to give program being debugged when it is started."), _("\
2700 Follow this command with any number of args, to be passed to the program."),
2703 &setlist
, &showlist
);
2705 c
= add_cmd ("environment", no_class
, environment_info
, _("\
2706 The environment to give the program, or one variable's value.\n\
2707 With an argument VAR, prints the value of environment variable VAR to\n\
2708 give the program being debugged. With no arguments, prints the entire\n\
2709 environment to be given to the program."), &showlist
);
2710 set_cmd_completer (c
, noop_completer
);
2712 add_prefix_cmd ("unset", no_class
, unset_command
,
2713 _("Complement to certain \"set\" commands."),
2714 &unsetlist
, "unset ", 0, &cmdlist
);
2716 c
= add_cmd ("environment", class_run
, unset_environment_command
, _("\
2717 Cancel environment variable VAR for the program.\n\
2718 This does not affect the program until the next \"run\" command."),
2720 set_cmd_completer (c
, noop_completer
);
2722 c
= add_cmd ("environment", class_run
, set_environment_command
, _("\
2723 Set environment variable value to give the program.\n\
2724 Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\
2725 VALUES of environment variables are uninterpreted strings.\n\
2726 This does not affect the program until the next \"run\" command."),
2728 set_cmd_completer (c
, noop_completer
);
2730 c
= add_com ("path", class_files
, path_command
, _("\
2731 Add directory DIR(s) to beginning of search path for object files.\n\
2732 $cwd in the path means the current working directory.\n\
2733 This path is equivalent to the $PATH shell variable. It is a list of\n\
2734 directories, separated by colons. These directories are searched to find\n\
2735 fully linked executable files and separately compiled object files as needed."));
2736 set_cmd_completer (c
, filename_completer
);
2738 c
= add_cmd ("paths", no_class
, path_info
, _("\
2739 Current search path for finding object files.\n\
2740 $cwd in the path means the current working directory.\n\
2741 This path is equivalent to the $PATH shell variable. It is a list of\n\
2742 directories, separated by colons. These directories are searched to find\n\
2743 fully linked executable files and separately compiled object files as needed."),
2745 set_cmd_completer (c
, noop_completer
);
2747 add_prefix_cmd ("kill", class_run
, kill_command
,
2748 _("Kill execution of program being debugged."),
2749 &killlist
, "kill ", 0, &cmdlist
);
2751 add_com ("attach", class_run
, attach_command
, _("\
2752 Attach to a process or file outside of GDB.\n\
2753 This command attaches to another target, of the same type as your last\n\
2754 \"target\" command (\"info files\" will show your target stack).\n\
2755 The command may take as argument a process id or a device file.\n\
2756 For a process id, you must have permission to send the process a signal,\n\
2757 and it must have the same effective uid as the debugger.\n\
2758 When using \"attach\" with a process id, the debugger finds the\n\
2759 program running in the process, looking first in the current working\n\
2760 directory, or (if not found there) using the source file search path\n\
2761 (see the \"directory\" command). You can also use the \"file\" command\n\
2762 to specify the program, and to load its symbol table."));
2764 add_prefix_cmd ("detach", class_run
, detach_command
, _("\
2765 Detach a process or file previously attached.\n\
2766 If a process, it is no longer traced, and it continues its execution. If\n\
2767 you were debugging a file, the file is closed and gdb no longer accesses it."),
2768 &detachlist
, "detach ", 0, &cmdlist
);
2770 add_com ("disconnect", class_run
, disconnect_command
, _("\
2771 Disconnect from a target.\n\
2772 The target will wait for another debugger to connect. Not available for\n\
2775 add_com ("signal", class_run
, signal_command
, _("\
2776 Continue program giving it signal specified by the argument.\n\
2777 An argument of \"0\" means continue program without giving it a signal."));
2779 add_com ("stepi", class_run
, stepi_command
, _("\
2780 Step one instruction exactly.\n\
2781 Argument N means do this N times (or till program stops for another reason)."));
2782 add_com_alias ("si", "stepi", class_alias
, 0);
2784 add_com ("nexti", class_run
, nexti_command
, _("\
2785 Step one instruction, but proceed through subroutine calls.\n\
2786 Argument N means do this N times (or till program stops for another reason)."));
2787 add_com_alias ("ni", "nexti", class_alias
, 0);
2789 add_com ("finish", class_run
, finish_command
, _("\
2790 Execute until selected stack frame returns.\n\
2791 Upon return, the value returned is printed and put in the value history."));
2792 add_com_alias ("fin", "finish", class_run
, 1);
2794 add_com ("next", class_run
, next_command
, _("\
2795 Step program, proceeding through subroutine calls.\n\
2796 Like the \"step\" command as long as subroutine calls do not happen;\n\
2797 when they do, the call is treated as one instruction.\n\
2798 Argument N means do this N times (or till program stops for another reason)."));
2799 add_com_alias ("n", "next", class_run
, 1);
2801 add_com_alias ("S", "next", class_run
, 1);
2803 add_com ("step", class_run
, step_command
, _("\
2804 Step program until it reaches a different source line.\n\
2805 Argument N means do this N times (or till program stops for another reason)."));
2806 add_com_alias ("s", "step", class_run
, 1);
2808 c
= add_com ("until", class_run
, until_command
, _("\
2809 Execute until the program reaches a source line greater than the current\n\
2810 or a specified location (same args as break command) within the current frame."));
2811 set_cmd_completer (c
, location_completer
);
2812 add_com_alias ("u", "until", class_run
, 1);
2814 c
= add_com ("advance", class_run
, advance_command
, _("\
2815 Continue the program up to the given location (same form as args for break command).\n\
2816 Execution will also stop upon exit from the current stack frame."));
2817 set_cmd_completer (c
, location_completer
);
2819 c
= add_com ("jump", class_run
, jump_command
, _("\
2820 Continue program being debugged at specified line or address.\n\
2821 Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\
2822 for an address to start at."));
2823 set_cmd_completer (c
, location_completer
);
2827 c
= add_com ("go", class_run
, go_command
, _("\
2828 Usage: go <location>\n\
2829 Continue program being debugged, stopping at specified line or \n\
2831 Give as argument either LINENUM or *ADDR, where ADDR is an \n\
2832 expression for an address to start at.\n\
2833 This command is a combination of tbreak and jump."));
2834 set_cmd_completer (c
, location_completer
);
2838 add_com_alias ("g", "go", class_run
, 1);
2840 c
= add_com ("continue", class_run
, continue_command
, _("\
2841 Continue program being debugged, after signal or breakpoint.\n\
2842 If proceeding from breakpoint, a number N may be used as an argument,\n\
2843 which means to set the ignore count of that breakpoint to N - 1 (so that\n\
2844 the breakpoint won't break until the Nth time it is reached).\n\
2846 If non-stop mode is enabled, continue only the current thread,\n\
2847 otherwise all the threads in the program are continued. To \n\
2848 continue all stopped threads in non-stop mode, use the -a option.\n\
2849 Specifying -a and an ignore count simultaneously is an error."));
2850 add_com_alias ("c", "cont", class_run
, 1);
2851 add_com_alias ("fg", "cont", class_run
, 1);
2853 c
= add_com ("run", class_run
, run_command
, _("\
2854 Start debugged program. You may specify arguments to give it.\n\
2855 Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\
2856 Input and output redirection with \">\", \"<\", or \">>\" are also allowed.\n\n\
2857 With no arguments, uses arguments last specified (with \"run\" or \"set args\").\n\
2858 To cancel previous arguments and run with no arguments,\n\
2859 use \"set args\" without arguments."));
2860 set_cmd_completer (c
, filename_completer
);
2861 add_com_alias ("r", "run", class_run
, 1);
2863 add_com ("R", class_run
, run_no_args_command
,
2864 _("Start debugged program with no arguments."));
2866 c
= add_com ("start", class_run
, start_command
, _("\
2867 Run the debugged program until the beginning of the main procedure.\n\
2868 You may specify arguments to give to your program, just as with the\n\
2869 \"run\" command."));
2870 set_cmd_completer (c
, filename_completer
);
2872 c
= add_com ("interrupt", class_run
, interrupt_target_command
,
2873 _("Interrupt the execution of the debugged program.\n\
2874 If non-stop mode is enabled, interrupt only the current thread,\n\
2875 otherwise all the threads in the program are stopped. To \n\
2876 interrupt all running threads in non-stop mode, use the -a option."));
2878 add_info ("registers", nofp_registers_info
, _("\
2879 List of integer registers and their contents, for selected stack frame.\n\
2880 Register name as argument means describe only that register."));
2881 add_info_alias ("r", "registers", 1);
2884 add_com ("lr", class_info
, nofp_registers_info
, _("\
2885 List of integer registers and their contents, for selected stack frame.\n\
2886 Register name as argument means describe only that register."));
2887 add_info ("all-registers", all_registers_info
, _("\
2888 List of all registers and their contents, for selected stack frame.\n\
2889 Register name as argument means describe only that register."));
2891 add_info ("program", program_info
,
2892 _("Execution status of the program."));
2894 add_info ("float", float_info
,
2895 _("Print the status of the floating point unit\n"));
2897 add_info ("vector", vector_info
,
2898 _("Print the status of the vector unit\n"));