1 /* Memory-access and commands for "inferior" process, for GDB.
3 Copyright (C) 1986-2012 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
21 #include "arch-utils.h"
23 #include "gdb_string.h"
37 #include "completer.h"
39 #include "event-top.h"
40 #include "parser-defs.h"
42 #include "reggroups.h"
46 #include "gdb_assert.h"
48 #include "target-descriptions.h"
49 #include "user-regs.h"
50 #include "exceptions.h"
51 #include "cli/cli-decode.h"
52 #include "gdbthread.h"
54 #include "inline-frame.h"
55 #include "tracepoint.h"
57 #include "continuations.h"
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 value *function,
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)
279 /* This holds all the characters considered special to the
281 char *special = "\"!&*|[]{}<>?`~^=;, \t\n";
282 const char quote = '"';
284 /* This holds all the characters considered special to the
285 typical Unix shells. We include `^' because the SunOS
286 /bin/sh treats it as a synonym for `|'. */
287 char *special = "\"!#$&*()\\|[]{}<>?'`~^; \t\n";
288 const char quote = '\'';
294 /* We over-compute the size. It shouldn't matter. */
295 for (i = 0; i < argc; ++i)
296 length += 3 * strlen (argv[i]) + 1 + 2 * (argv[i][0] == '\0');
298 result = (char *) xmalloc (length);
301 for (i = 0; i < argc; ++i)
306 /* Need to handle empty arguments specially. */
307 if (argv[i][0] == '\0')
317 if (strpbrk (argv[i], special))
323 for (cp = argv[i]; *cp; ++cp)
327 /* A newline cannot be quoted with a backslash (it
328 just disappears), only by putting it inside
339 if (strchr (special, *cp) != NULL)
355 /* In this case we can't handle arguments that contain spaces,
356 tabs, or newlines -- see breakup_args(). */
360 for (i = 0; i < argc; ++i)
362 char *cp = strchr (argv[i], ' ');
364 cp = strchr (argv[i], '\t');
366 cp = strchr (argv[i], '\n');
368 error (_("can't handle command-line "
369 "argument containing whitespace"));
370 length += strlen (argv[i]) + 1;
373 result = (char *) xmalloc (length);
375 for (i = 0; i < argc; ++i)
378 strcat (result, " ");
379 strcat (result, argv[i]);
387 /* This function detects whether or not a '&' character (indicating
388 background execution) has been added as *the last* of the arguments ARGS
389 of a command. If it has, it removes it and returns 1. Otherwise it
390 does nothing and returns 0. */
392 strip_bg_char (char **args)
396 p = strchr (*args, '&');
400 if (p == (*args + strlen (*args) - 1))
402 if (strlen (*args) > 1)
406 while (*p == ' ' || *p == '\t');
417 /* Common actions to take after creating any sort of inferior, by any
418 means (running, attaching, connecting, et cetera). The target
419 should be stopped. */
422 post_create_inferior (struct target_ops *target, int from_tty)
424 volatile struct gdb_exception ex;
426 /* Be sure we own the terminal in case write operations are performed. */
427 target_terminal_ours ();
429 /* If the target hasn't taken care of this already, do it now.
430 Targets which need to access registers during to_open,
431 to_create_inferior, or to_attach should do it earlier; but many
433 target_find_description ();
435 /* Now that we know the register layout, retrieve current PC. But
436 if the PC is unavailable (e.g., we're opening a core file with
437 missing registers info), ignore it. */
439 TRY_CATCH (ex, RETURN_MASK_ERROR)
441 stop_pc = regcache_read_pc (get_current_regcache ());
443 if (ex.reason < 0 && ex.error != NOT_AVAILABLE_ERROR)
444 throw_exception (ex);
448 const unsigned solib_add_generation
449 = current_program_space->solib_add_generation;
451 /* Create the hooks to handle shared library load and unload
453 #ifdef SOLIB_CREATE_INFERIOR_HOOK
454 SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid));
456 solib_create_inferior_hook (from_tty);
459 if (current_program_space->solib_add_generation == solib_add_generation)
461 /* The platform-specific hook should load initial shared libraries,
462 but didn't. FROM_TTY will be incorrectly 0 but such solib
463 targets should be fixed anyway. Call it only after the solib
464 target has been initialized by solib_create_inferior_hook. */
467 warning (_("platform-specific solib_create_inferior_hook did "
468 "not load initial shared libraries."));
470 /* If the solist is global across processes, there's no need to
472 if (!gdbarch_has_global_solist (target_gdbarch))
475 SOLIB_ADD (NULL, 0, target, auto_solib_add);
477 solib_add (NULL, 0, target, auto_solib_add);
483 /* If the user sets watchpoints before execution having started,
484 then she gets software watchpoints, because GDB can't know which
485 target will end up being pushed, or if it supports hardware
486 watchpoints or not. breakpoint_re_set takes care of promoting
487 watchpoints to hardware watchpoints if possible, however, if this
488 new inferior doesn't load shared libraries or we don't pull in
489 symbols from any other source on this target/arch,
490 breakpoint_re_set is never called. Call it now so that software
491 watchpoints get a chance to be promoted to hardware watchpoints
492 if the now pushed target supports hardware watchpoints. */
493 breakpoint_re_set ();
495 observer_notify_inferior_created (target, from_tty);
498 /* Kill the inferior if already running. This function is designed
499 to be called when we are about to start the execution of the program
500 from the beginning. Ask the user to confirm that he wants to restart
501 the program being debugged when FROM_TTY is non-null. */
504 kill_if_already_running (int from_tty)
506 if (! ptid_equal (inferior_ptid, null_ptid) && target_has_execution)
508 /* Bail out before killing the program if we will not be able to
510 target_require_runnable ();
513 && !query (_("The program being debugged has been started already.\n\
514 Start it from the beginning? ")))
515 error (_("Program not restarted."));
520 /* Implement the "run" command. If TBREAK_AT_MAIN is set, then insert
521 a temporary breakpoint at the begining of the main program before
522 running the program. */
525 run_command_1 (char *args, int from_tty, int tbreak_at_main)
528 struct cleanup *old_chain;
530 struct ui_out *uiout = current_uiout;
534 kill_if_already_running (from_tty);
536 init_wait_for_inferior ();
537 clear_breakpoint_hit_counts ();
539 /* Clean up any leftovers from other runs. Some other things from
540 this function should probably be moved into target_pre_inferior. */
541 target_pre_inferior (from_tty);
543 /* The comment here used to read, "The exec file is re-read every
544 time we do a generic_mourn_inferior, so we just have to worry
545 about the symbol file." The `generic_mourn_inferior' function
546 gets called whenever the program exits. However, suppose the
547 program exits, and *then* the executable file changes? We need
548 to check again here. Since reopen_exec_file doesn't do anything
549 if the timestamp hasn't changed, I don't see the harm. */
553 /* Insert the temporary breakpoint if a location was specified. */
555 tbreak_command (main_name (), 0);
557 exec_file = (char *) get_exec_file (0);
559 if (non_stop && !target_supports_non_stop ())
560 error (_("The target does not support running in non-stop mode."));
562 /* We keep symbols from add-symbol-file, on the grounds that the
563 user might want to add some symbols before running the program
564 (right?). But sometimes (dynamic loading where the user manually
565 introduces the new symbols with add-symbol-file), the code which
566 the symbols describe does not persist between runs. Currently
567 the user has to manually nuke all symbols between runs if they
568 want them to go away (PR 2207). This is probably reasonable. */
572 if (target_can_async_p ())
573 async_disable_stdin ();
577 int async_exec = strip_bg_char (&args);
579 /* If we get a request for running in the bg but the target
580 doesn't support it, error out. */
581 if (async_exec && !target_can_async_p ())
582 error (_("Asynchronous execution not supported on this target."));
584 /* If we don't get a request of running in the bg, then we need
585 to simulate synchronous (fg) execution. */
586 if (!async_exec && target_can_async_p ())
588 /* Simulate synchronous execution. */
589 async_disable_stdin ();
592 /* If there were other args, beside '&', process them. */
594 set_inferior_args (args);
599 ui_out_field_string (uiout, NULL, "Starting program");
600 ui_out_text (uiout, ": ");
602 ui_out_field_string (uiout, "execfile", exec_file);
603 ui_out_spaces (uiout, 1);
604 /* We call get_inferior_args() because we might need to compute
606 ui_out_field_string (uiout, "infargs", get_inferior_args ());
607 ui_out_text (uiout, "\n");
608 ui_out_flush (uiout);
611 /* We call get_inferior_args() because we might need to compute
613 target_create_inferior (exec_file, get_inferior_args (),
614 environ_vector (current_inferior ()->environment),
617 /* We're starting off a new process. When we get out of here, in
618 non-stop mode, finish the state of all threads of that process,
619 but leave other threads alone, as they may be stopped in internal
620 events --- the frontend shouldn't see them as stopped. In
621 all-stop, always finish the state of all threads, as we may be
622 resuming more than just the new process. */
624 ptid = pid_to_ptid (ptid_get_pid (inferior_ptid));
626 ptid = minus_one_ptid;
627 old_chain = make_cleanup (finish_thread_state_cleanup, &ptid);
629 /* Pass zero for FROM_TTY, because at this point the "run" command
630 has done its thing; now we are setting up the running program. */
631 post_create_inferior (¤t_target, 0);
633 /* Start the target running. Do not use -1 continuation as it would skip
634 breakpoint right at the entry point. */
635 proceed (regcache_read_pc (get_current_regcache ()), GDB_SIGNAL_0, 0);
637 /* Since there was no error, there's no need to finish the thread
639 discard_cleanups (old_chain);
643 run_command (char *args, int from_tty)
645 run_command_1 (args, from_tty, 0);
649 run_no_args_command (char *args, int from_tty)
651 set_inferior_args ("");
655 /* Start the execution of the program up until the beginning of the main
659 start_command (char *args, int from_tty)
661 /* Some languages such as Ada need to search inside the program
662 minimal symbols for the location where to put the temporary
663 breakpoint before starting. */
664 if (!have_minimal_symbols ())
665 error (_("No symbol table loaded. Use the \"file\" command."));
667 /* Run the program until reaching the main procedure... */
668 run_command_1 (args, from_tty, 1);
672 proceed_thread_callback (struct thread_info *thread, void *arg)
674 /* We go through all threads individually instead of compressing
675 into a single target `resume_all' request, because some threads
676 may be stopped in internal breakpoints/events, or stopped waiting
677 for its turn in the displaced stepping queue (that is, they are
678 running && !executing). The target side has no idea about why
679 the thread is stopped, so a `resume_all' command would resume too
680 much. If/when GDB gains a way to tell the target `hold this
681 thread stopped until I say otherwise', then we can optimize
683 if (!is_stopped (thread->ptid))
686 switch_to_thread (thread->ptid);
687 clear_proceed_status ();
688 proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT, 0);
693 ensure_valid_thread (void)
695 if (ptid_equal (inferior_ptid, null_ptid)
696 || is_exited (inferior_ptid))
697 error (_("Cannot execute this command without a live selected thread."));
700 /* If the user is looking at trace frames, any resumption of execution
701 is likely to mix up recorded and live target data. So simply
702 disallow those commands. */
705 ensure_not_tfind_mode (void)
707 if (get_traceframe_number () >= 0)
708 error (_("Cannot execute this command while looking at trace frames."));
712 continue_1 (int all_threads)
715 ensure_not_tfind_mode ();
717 if (non_stop && all_threads)
719 /* Don't error out if the current thread is running, because
720 there may be other stopped threads. */
721 struct cleanup *old_chain;
723 /* Backup current thread and selected frame. */
724 old_chain = make_cleanup_restore_current_thread ();
726 iterate_over_threads (proceed_thread_callback, NULL);
728 /* Restore selected ptid. */
729 do_cleanups (old_chain);
733 ensure_valid_thread ();
734 ensure_not_running ();
735 clear_proceed_status ();
736 proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT, 0);
740 /* continue [-a] [proceed-count] [&] */
742 continue_command (char *args, int from_tty)
748 /* Find out whether we must run in the background. */
750 async_exec = strip_bg_char (&args);
752 /* If we must run in the background, but the target can't do it,
754 if (async_exec && !target_can_async_p ())
755 error (_("Asynchronous execution not supported on this target."));
757 /* If we are not asked to run in the bg, then prepare to run in the
758 foreground, synchronously. */
759 if (!async_exec && target_can_async_p ())
761 /* Simulate synchronous execution. */
762 async_disable_stdin ();
767 if (strncmp (args, "-a", sizeof ("-a") - 1) == 0)
770 args += sizeof ("-a") - 1;
776 if (!non_stop && all_threads)
777 error (_("`-a' is meaningless in all-stop mode."));
779 if (args != NULL && all_threads)
780 error (_("Can't resume all threads and specify "
781 "proceed count simultaneously."));
783 /* If we have an argument left, set proceed count of breakpoint we
790 struct thread_info *tp;
793 tp = find_thread_ptid (inferior_ptid);
797 struct target_waitstatus ws;
799 get_last_target_status (&last_ptid, &ws);
800 tp = find_thread_ptid (last_ptid);
803 bs = tp->control.stop_bpstat;
805 while ((stat = bpstat_num (&bs, &num)) != 0)
808 set_ignore_count (num,
809 parse_and_eval_long (args) - 1,
811 /* set_ignore_count prints a message ending with a period.
812 So print two spaces before "Continuing.". */
814 printf_filtered (" ");
818 if (!stopped && from_tty)
821 ("Not stopped at any breakpoint; argument ignored.\n");
826 printf_filtered (_("Continuing.\n"));
828 continue_1 (all_threads);
831 /* Record the starting point of a "step" or "next" command. */
834 set_step_frame (void)
836 struct symtab_and_line sal;
838 find_frame_sal (get_current_frame (), &sal);
839 set_step_info (get_current_frame (), sal);
842 /* Step until outside of current statement. */
845 step_command (char *count_string, int from_tty)
847 step_1 (0, 0, count_string);
850 /* Likewise, but skip over subroutine calls as if single instructions. */
853 next_command (char *count_string, int from_tty)
855 step_1 (1, 0, count_string);
858 /* Likewise, but step only one instruction. */
861 stepi_command (char *count_string, int from_tty)
863 step_1 (0, 1, count_string);
867 nexti_command (char *count_string, int from_tty)
869 step_1 (1, 1, count_string);
873 delete_longjmp_breakpoint_cleanup (void *arg)
875 int thread = * (int *) arg;
876 delete_longjmp_breakpoint (thread);
880 step_1 (int skip_subroutines, int single_inst, char *count_string)
883 struct cleanup *cleanups = make_cleanup (null_cleanup, NULL);
888 ensure_not_tfind_mode ();
889 ensure_valid_thread ();
890 ensure_not_running ();
893 async_exec = strip_bg_char (&count_string);
895 /* If we get a request for running in the bg but the target
896 doesn't support it, error out. */
897 if (async_exec && !target_can_async_p ())
898 error (_("Asynchronous execution not supported on this target."));
900 /* If we don't get a request of running in the bg, then we need
901 to simulate synchronous (fg) execution. */
902 if (!async_exec && target_can_async_p ())
904 /* Simulate synchronous execution. */
905 async_disable_stdin ();
908 count = count_string ? parse_and_eval_long (count_string) : 1;
910 if (!single_inst || skip_subroutines) /* Leave si command alone. */
912 struct thread_info *tp = inferior_thread ();
914 if (in_thread_list (inferior_ptid))
915 thread = pid_to_thread_id (inferior_ptid);
917 set_longjmp_breakpoint (tp, get_frame_id (get_current_frame ()));
919 make_cleanup (delete_longjmp_breakpoint_cleanup, &thread);
922 /* In synchronous case, all is well; each step_once call will step once. */
923 if (!target_can_async_p ())
925 for (; count > 0; count--)
927 step_once (skip_subroutines, single_inst, count, thread);
929 if (!target_has_execution)
933 struct thread_info *tp = inferior_thread ();
935 if (!tp->control.stop_step || !tp->step_multi)
937 /* If we stopped for some reason that is not stepping
938 there are no further steps to make. */
945 do_cleanups (cleanups);
949 /* In the case of an asynchronous target things get complicated;
950 do only one step for now, before returning control to the
951 event loop. Let the continuation figure out how many other
952 steps we need to do, and handle them one at the time, through
954 step_once (skip_subroutines, single_inst, count, thread);
956 /* We are running, and the continuation is installed. It will
957 disable the longjmp breakpoint as appropriate. */
958 discard_cleanups (cleanups);
962 struct step_1_continuation_args
965 int skip_subroutines;
970 /* Called after we are done with one step operation, to check whether
971 we need to step again, before we print the prompt and return control
972 to the user. If count is > 1, we will need to do one more call to
973 proceed(), via step_once(). Basically it is like step_once and
974 step_1_continuation are co-recursive. */
976 step_1_continuation (void *args, int err)
978 struct step_1_continuation_args *a = args;
980 if (target_has_execution)
982 struct thread_info *tp;
984 tp = inferior_thread ();
986 && tp->step_multi && tp->control.stop_step)
988 /* There are more steps to make, and we did stop due to
989 ending a stepping range. Do another step. */
990 step_once (a->skip_subroutines, a->single_inst,
991 a->count - 1, a->thread);
997 /* We either hit an error, or stopped for some reason that is
998 not stepping, or there are no further steps to make.
1000 if (!a->single_inst || a->skip_subroutines)
1001 delete_longjmp_breakpoint (a->thread);
1004 /* Do just one step operation. This is useful to implement the 'step
1005 n' kind of commands. In case of asynchronous targets, we will have
1006 to set up a continuation to be done after the target stops (after
1007 this one step). For synch targets, the caller handles further
1011 step_once (int skip_subroutines, int single_inst, int count, int thread)
1013 struct frame_info *frame = get_current_frame ();
1017 /* Don't assume THREAD is a valid thread id. It is set to -1 if
1018 the longjmp breakpoint was not required. Use the
1019 INFERIOR_PTID thread instead, which is the same thread when
1021 struct thread_info *tp = inferior_thread ();
1023 clear_proceed_status ();
1030 /* Step at an inlined function behaves like "down". */
1031 if (!skip_subroutines && !single_inst
1032 && inline_skipped_frames (inferior_ptid))
1036 /* Pretend that we've ran. */
1037 resume_ptid = user_visible_resume_ptid (1);
1038 set_running (resume_ptid, 1);
1040 step_into_inline_frame (inferior_ptid);
1042 step_once (skip_subroutines, single_inst, count - 1, thread);
1045 /* Pretend that we've stopped. */
1048 if (target_can_async_p ())
1049 inferior_event_handler (INF_EXEC_COMPLETE, NULL);
1054 pc = get_frame_pc (frame);
1055 find_pc_line_pc_range (pc,
1056 &tp->control.step_range_start,
1057 &tp->control.step_range_end);
1059 /* If we have no line info, switch to stepi mode. */
1060 if (tp->control.step_range_end == 0 && step_stop_if_no_debug)
1061 tp->control.step_range_start = tp->control.step_range_end = 1;
1062 else if (tp->control.step_range_end == 0)
1066 if (find_pc_partial_function (pc, &name,
1067 &tp->control.step_range_start,
1068 &tp->control.step_range_end) == 0)
1069 error (_("Cannot find bounds of current function"));
1071 target_terminal_ours ();
1072 printf_filtered (_("Single stepping until exit from function %s,"
1073 "\nwhich has no line number information.\n"),
1079 /* Say we are stepping, but stop after one insn whatever it does. */
1080 tp->control.step_range_start = tp->control.step_range_end = 1;
1081 if (!skip_subroutines)
1083 Don't step over function calls, not even to functions lacking
1085 tp->control.step_over_calls = STEP_OVER_NONE;
1088 if (skip_subroutines)
1089 tp->control.step_over_calls = STEP_OVER_ALL;
1091 tp->step_multi = (count > 1);
1092 proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT, 1);
1094 /* For async targets, register a continuation to do any
1095 additional steps. For sync targets, the caller will handle
1096 further stepping. */
1097 if (target_can_async_p ())
1099 struct step_1_continuation_args *args;
1101 args = xmalloc (sizeof (*args));
1102 args->skip_subroutines = skip_subroutines;
1103 args->single_inst = single_inst;
1104 args->count = count;
1105 args->thread = thread;
1107 add_intermediate_continuation (tp, step_1_continuation, args, xfree);
1113 /* Continue program at specified address. */
1116 jump_command (char *arg, int from_tty)
1118 struct gdbarch *gdbarch = get_current_arch ();
1120 struct symtabs_and_lines sals;
1121 struct symtab_and_line sal;
1127 ensure_not_tfind_mode ();
1128 ensure_valid_thread ();
1129 ensure_not_running ();
1131 /* Find out whether we must run in the background. */
1133 async_exec = strip_bg_char (&arg);
1135 /* If we must run in the background, but the target can't do it,
1137 if (async_exec && !target_can_async_p ())
1138 error (_("Asynchronous execution not supported on this target."));
1141 error_no_arg (_("starting address"));
1143 sals = decode_line_with_last_displayed (arg, DECODE_LINE_FUNFIRSTLINE);
1144 if (sals.nelts != 1)
1146 error (_("Unreasonable jump request"));
1152 if (sal.symtab == 0 && sal.pc == 0)
1153 error (_("No source file has been specified."));
1155 resolve_sal_pc (&sal); /* May error out. */
1157 /* See if we are trying to jump to another function. */
1158 fn = get_frame_function (get_current_frame ());
1159 sfn = find_pc_function (sal.pc);
1160 if (fn != NULL && sfn != fn)
1162 if (!query (_("Line %d is not in `%s'. Jump anyway? "), sal.line,
1163 SYMBOL_PRINT_NAME (fn)))
1165 error (_("Not confirmed."));
1172 fixup_symbol_section (sfn, 0);
1173 if (section_is_overlay (SYMBOL_OBJ_SECTION (sfn)) &&
1174 !section_is_mapped (SYMBOL_OBJ_SECTION (sfn)))
1176 if (!query (_("WARNING!!! Destination is in "
1177 "unmapped overlay! Jump anyway? ")))
1179 error (_("Not confirmed."));
1189 printf_filtered (_("Continuing at "));
1190 fputs_filtered (paddress (gdbarch, addr), gdb_stdout);
1191 printf_filtered (".\n");
1194 /* If we are not asked to run in the bg, then prepare to run in the
1195 foreground, synchronously. */
1196 if (!async_exec && target_can_async_p ())
1198 /* Simulate synchronous execution. */
1199 async_disable_stdin ();
1202 clear_proceed_status ();
1203 proceed (addr, GDB_SIGNAL_0, 0);
1207 /* Go to line or address in current procedure. */
1209 go_command (char *line_no, int from_tty)
1211 if (line_no == (char *) NULL || !*line_no)
1212 printf_filtered (_("Usage: go <location>\n"));
1215 tbreak_command (line_no, from_tty);
1216 jump_command (line_no, from_tty);
1221 /* Continue program giving it specified signal. */
1224 signal_command (char *signum_exp, int from_tty)
1226 enum gdb_signal oursig;
1229 dont_repeat (); /* Too dangerous. */
1231 ensure_not_tfind_mode ();
1232 ensure_valid_thread ();
1233 ensure_not_running ();
1235 /* Find out whether we must run in the background. */
1236 if (signum_exp != NULL)
1237 async_exec = strip_bg_char (&signum_exp);
1239 /* If we must run in the background, but the target can't do it,
1241 if (async_exec && !target_can_async_p ())
1242 error (_("Asynchronous execution not supported on this target."));
1244 /* If we are not asked to run in the bg, then prepare to run in the
1245 foreground, synchronously. */
1246 if (!async_exec && target_can_async_p ())
1248 /* Simulate synchronous execution. */
1249 async_disable_stdin ();
1253 error_no_arg (_("signal number"));
1255 /* It would be even slicker to make signal names be valid expressions,
1256 (the type could be "enum $signal" or some such), then the user could
1257 assign them to convenience variables. */
1258 oursig = gdb_signal_from_name (signum_exp);
1260 if (oursig == GDB_SIGNAL_UNKNOWN)
1262 /* No, try numeric. */
1263 int num = parse_and_eval_long (signum_exp);
1266 oursig = GDB_SIGNAL_0;
1268 oursig = gdb_signal_from_command (num);
1273 if (oursig == GDB_SIGNAL_0)
1274 printf_filtered (_("Continuing with no signal.\n"));
1276 printf_filtered (_("Continuing with signal %s.\n"),
1277 gdb_signal_to_name (oursig));
1280 clear_proceed_status ();
1281 proceed ((CORE_ADDR) -1, oursig, 0);
1284 /* Continuation args to be passed to the "until" command
1286 struct until_next_continuation_args
1288 /* The thread that was current when the command was executed. */
1292 /* A continuation callback for until_next_command. */
1295 until_next_continuation (void *arg, int err)
1297 struct until_next_continuation_args *a = arg;
1299 delete_longjmp_breakpoint (a->thread);
1302 /* Proceed until we reach a different source line with pc greater than
1303 our current one or exit the function. We skip calls in both cases.
1305 Note that eventually this command should probably be changed so
1306 that only source lines are printed out when we hit the breakpoint
1307 we set. This may involve changes to wait_for_inferior and the
1308 proceed status code. */
1311 until_next_command (int from_tty)
1313 struct frame_info *frame;
1315 struct symbol *func;
1316 struct symtab_and_line sal;
1317 struct thread_info *tp = inferior_thread ();
1318 int thread = tp->num;
1319 struct cleanup *old_chain;
1321 clear_proceed_status ();
1324 frame = get_current_frame ();
1326 /* Step until either exited from this function or greater
1327 than the current line (if in symbolic section) or pc (if
1330 pc = get_frame_pc (frame);
1331 func = find_pc_function (pc);
1335 struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (pc);
1337 if (msymbol == NULL)
1338 error (_("Execution is not within a known function."));
1340 tp->control.step_range_start = SYMBOL_VALUE_ADDRESS (msymbol);
1341 tp->control.step_range_end = pc;
1345 sal = find_pc_line (pc, 0);
1347 tp->control.step_range_start = BLOCK_START (SYMBOL_BLOCK_VALUE (func));
1348 tp->control.step_range_end = sal.end;
1351 tp->control.step_over_calls = STEP_OVER_ALL;
1353 tp->step_multi = 0; /* Only one call to proceed */
1355 set_longjmp_breakpoint (tp, get_frame_id (frame));
1356 old_chain = make_cleanup (delete_longjmp_breakpoint_cleanup, &thread);
1358 proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT, 1);
1360 if (target_can_async_p () && is_running (inferior_ptid))
1362 struct until_next_continuation_args *cont_args;
1364 discard_cleanups (old_chain);
1365 cont_args = XNEW (struct until_next_continuation_args);
1366 cont_args->thread = inferior_thread ()->num;
1368 add_continuation (tp, until_next_continuation, cont_args, xfree);
1371 do_cleanups (old_chain);
1375 until_command (char *arg, int from_tty)
1380 ensure_not_tfind_mode ();
1381 ensure_valid_thread ();
1382 ensure_not_running ();
1384 /* Find out whether we must run in the background. */
1386 async_exec = strip_bg_char (&arg);
1388 /* If we must run in the background, but the target can't do it,
1390 if (async_exec && !target_can_async_p ())
1391 error (_("Asynchronous execution not supported on this target."));
1393 /* If we are not asked to run in the bg, then prepare to run in the
1394 foreground, synchronously. */
1395 if (!async_exec && target_can_async_p ())
1397 /* Simulate synchronous execution. */
1398 async_disable_stdin ();
1402 until_break_command (arg, from_tty, 0);
1404 until_next_command (from_tty);
1408 advance_command (char *arg, int from_tty)
1413 ensure_not_tfind_mode ();
1414 ensure_valid_thread ();
1415 ensure_not_running ();
1418 error_no_arg (_("a location"));
1420 /* Find out whether we must run in the background. */
1422 async_exec = strip_bg_char (&arg);
1424 /* If we must run in the background, but the target can't do it,
1426 if (async_exec && !target_can_async_p ())
1427 error (_("Asynchronous execution not supported on this target."));
1429 /* If we are not asked to run in the bg, then prepare to run in the
1430 foreground, synchronously. */
1431 if (!async_exec && target_can_async_p ())
1433 /* Simulate synchronous execution. */
1434 async_disable_stdin ();
1437 until_break_command (arg, from_tty, 1);
1440 /* Return the value of the result of a function at the end of a 'finish'
1444 get_return_value (struct value *function, struct type *value_type)
1446 struct regcache *stop_regs = stop_registers;
1447 struct gdbarch *gdbarch;
1448 struct value *value;
1449 struct ui_out *uiout = current_uiout;
1450 struct cleanup *cleanup = make_cleanup (null_cleanup, NULL);
1452 /* If stop_registers were not saved, use the current registers. */
1455 stop_regs = regcache_dup (get_current_regcache ());
1456 cleanup = make_cleanup_regcache_xfree (stop_regs);
1459 gdbarch = get_regcache_arch (stop_regs);
1461 CHECK_TYPEDEF (value_type);
1462 gdb_assert (TYPE_CODE (value_type) != TYPE_CODE_VOID);
1464 /* FIXME: 2003-09-27: When returning from a nested inferior function
1465 call, it's possible (with no help from the architecture vector)
1466 to locate and return/print a "struct return" value. This is just
1467 a more complicated case of what is already being done in the
1468 inferior function call code. In fact, when inferior function
1469 calls are made async, this will likely be made the norm. */
1471 switch (gdbarch_return_value (gdbarch, function, value_type,
1474 case RETURN_VALUE_REGISTER_CONVENTION:
1475 case RETURN_VALUE_ABI_RETURNS_ADDRESS:
1476 case RETURN_VALUE_ABI_PRESERVES_ADDRESS:
1477 value = allocate_value (value_type);
1478 gdbarch_return_value (gdbarch, function, value_type, stop_regs,
1479 value_contents_raw (value), NULL);
1481 case RETURN_VALUE_STRUCT_CONVENTION:
1485 internal_error (__FILE__, __LINE__, _("bad switch"));
1488 do_cleanups (cleanup);
1493 /* Print the result of a function at the end of a 'finish' command. */
1496 print_return_value (struct value *function, struct type *value_type)
1498 struct value *value = get_return_value (function, value_type);
1499 struct ui_out *uiout = current_uiout;
1503 struct value_print_options opts;
1504 struct ui_file *stb;
1505 struct cleanup *old_chain;
1508 stb = mem_fileopen ();
1509 old_chain = make_cleanup_ui_file_delete (stb);
1510 ui_out_text (uiout, "Value returned is ");
1511 ui_out_field_fmt (uiout, "gdb-result-var", "$%d",
1512 record_latest_value (value));
1513 ui_out_text (uiout, " = ");
1514 get_raw_print_options (&opts);
1515 value_print (value, stb, &opts);
1516 ui_out_field_stream (uiout, "return-value", stb);
1517 ui_out_text (uiout, "\n");
1518 do_cleanups (old_chain);
1522 ui_out_text (uiout, "Value returned has type: ");
1523 ui_out_field_string (uiout, "return-type", TYPE_NAME (value_type));
1524 ui_out_text (uiout, ".");
1525 ui_out_text (uiout, " Cannot determine contents\n");
1529 /* Stuff that needs to be done by the finish command after the target
1530 has stopped. In asynchronous mode, we wait for the target to stop
1531 in the call to poll or select in the event loop, so it is
1532 impossible to do all the stuff as part of the finish_command
1533 function itself. The only chance we have to complete this command
1534 is in fetch_inferior_event, which is called by the event loop as
1535 soon as it detects that the target has stopped. */
1537 struct finish_command_continuation_args
1539 /* The thread that as current when the command was executed. */
1541 struct breakpoint *breakpoint;
1542 struct symbol *function;
1546 finish_command_continuation (void *arg, int err)
1548 struct finish_command_continuation_args *a = arg;
1552 struct thread_info *tp = NULL;
1555 if (!ptid_equal (inferior_ptid, null_ptid)
1556 && target_has_execution
1557 && is_stopped (inferior_ptid))
1559 tp = inferior_thread ();
1560 bs = tp->control.stop_bpstat;
1563 if (bpstat_find_breakpoint (bs, a->breakpoint) != NULL
1564 && a->function != NULL)
1566 struct type *value_type;
1568 value_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (a->function));
1570 internal_error (__FILE__, __LINE__,
1571 _("finish_command: function has no target type"));
1573 if (TYPE_CODE (value_type) != TYPE_CODE_VOID)
1575 volatile struct gdb_exception ex;
1578 func = read_var_value (a->function, get_current_frame ());
1579 TRY_CATCH (ex, RETURN_MASK_ALL)
1581 /* print_return_value can throw an exception in some
1582 circumstances. We need to catch this so that we still
1583 delete the breakpoint. */
1584 print_return_value (func, value_type);
1587 exception_print (gdb_stdout, ex);
1591 /* We suppress normal call of normal_stop observer and do it
1592 here so that the *stopped notification includes the return
1594 if (bs != NULL && tp->control.proceed_to_finish)
1595 observer_notify_normal_stop (bs, 1 /* print frame */);
1598 delete_breakpoint (a->breakpoint);
1599 delete_longjmp_breakpoint (a->thread);
1603 finish_command_continuation_free_arg (void *arg)
1608 /* finish_backward -- helper function for finish_command. */
1611 finish_backward (struct symbol *function)
1613 struct symtab_and_line sal;
1614 struct thread_info *tp = inferior_thread ();
1616 CORE_ADDR func_addr;
1618 pc = get_frame_pc (get_current_frame ());
1620 if (find_pc_partial_function (pc, NULL, &func_addr, NULL) == 0)
1621 internal_error (__FILE__, __LINE__,
1622 _("Finish: couldn't find function."));
1624 sal = find_pc_line (func_addr, 0);
1626 tp->control.proceed_to_finish = 1;
1627 /* Special case: if we're sitting at the function entry point,
1628 then all we need to do is take a reverse singlestep. We
1629 don't need to set a breakpoint, and indeed it would do us
1632 Note that this can only happen at frame #0, since there's
1633 no way that a function up the stack can have a return address
1634 that's equal to its entry point. */
1638 struct frame_info *frame = get_selected_frame (NULL);
1639 struct gdbarch *gdbarch = get_frame_arch (frame);
1640 struct symtab_and_line sr_sal;
1642 /* Set a step-resume at the function's entry point. Once that's
1643 hit, we'll do one more step backwards. */
1646 sr_sal.pspace = get_frame_program_space (frame);
1647 insert_step_resume_breakpoint_at_sal (gdbarch,
1648 sr_sal, null_frame_id);
1650 proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT, 0);
1654 /* We're almost there -- we just need to back up by one more
1656 tp->control.step_range_start = tp->control.step_range_end = 1;
1657 proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT, 1);
1661 /* finish_forward -- helper function for finish_command. */
1664 finish_forward (struct symbol *function, struct frame_info *frame)
1666 struct frame_id frame_id = get_frame_id (frame);
1667 struct gdbarch *gdbarch = get_frame_arch (frame);
1668 struct symtab_and_line sal;
1669 struct thread_info *tp = inferior_thread ();
1670 struct breakpoint *breakpoint;
1671 struct cleanup *old_chain;
1672 struct finish_command_continuation_args *cargs;
1673 int thread = tp->num;
1675 sal = find_pc_line (get_frame_pc (frame), 0);
1676 sal.pc = get_frame_pc (frame);
1678 breakpoint = set_momentary_breakpoint (gdbarch, sal,
1679 get_stack_frame_id (frame),
1682 /* set_momentary_breakpoint invalidates FRAME. */
1685 old_chain = make_cleanup_delete_breakpoint (breakpoint);
1687 set_longjmp_breakpoint (tp, frame_id);
1688 make_cleanup (delete_longjmp_breakpoint_cleanup, &thread);
1690 /* We want stop_registers, please... */
1691 tp->control.proceed_to_finish = 1;
1692 cargs = xmalloc (sizeof (*cargs));
1694 cargs->thread = thread;
1695 cargs->breakpoint = breakpoint;
1696 cargs->function = function;
1697 add_continuation (tp, finish_command_continuation, cargs,
1698 finish_command_continuation_free_arg);
1699 proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT, 0);
1701 discard_cleanups (old_chain);
1702 if (!target_can_async_p ())
1703 do_all_continuations (0);
1706 /* "finish": Set a temporary breakpoint at the place the selected
1707 frame will return to, then continue. */
1710 finish_command (char *arg, int from_tty)
1712 struct frame_info *frame;
1713 struct symbol *function;
1718 ensure_not_tfind_mode ();
1719 ensure_valid_thread ();
1720 ensure_not_running ();
1722 /* Find out whether we must run in the background. */
1724 async_exec = strip_bg_char (&arg);
1726 /* If we must run in the background, but the target can't do it,
1728 if (async_exec && !target_can_async_p ())
1729 error (_("Asynchronous execution not supported on this target."));
1731 /* If we are not asked to run in the bg, then prepare to run in the
1732 foreground, synchronously. */
1733 if (!async_exec && target_can_async_p ())
1735 /* Simulate synchronous execution. */
1736 async_disable_stdin ();
1740 error (_("The \"finish\" command does not take any arguments."));
1742 frame = get_prev_frame (get_selected_frame (_("No selected frame.")));
1744 error (_("\"finish\" not meaningful in the outermost frame."));
1746 clear_proceed_status ();
1748 /* Finishing from an inline frame is completely different. We don't
1749 try to show the "return value" - no way to locate it. So we do
1750 not need a completion. */
1751 if (get_frame_type (get_selected_frame (_("No selected frame.")))
1754 /* Claim we are stepping in the calling frame. An empty step
1755 range means that we will stop once we aren't in a function
1756 called by that frame. We don't use the magic "1" value for
1757 step_range_end, because then infrun will think this is nexti,
1758 and not step over the rest of this inlined function call. */
1759 struct thread_info *tp = inferior_thread ();
1760 struct symtab_and_line empty_sal;
1762 init_sal (&empty_sal);
1763 set_step_info (frame, empty_sal);
1764 tp->control.step_range_start = get_frame_pc (frame);
1765 tp->control.step_range_end = tp->control.step_range_start;
1766 tp->control.step_over_calls = STEP_OVER_ALL;
1768 /* Print info on the selected frame, including level number but not
1772 printf_filtered (_("Run till exit from "));
1773 print_stack_frame (get_selected_frame (NULL), 1, LOCATION);
1776 proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT, 1);
1780 /* Ignore TAILCALL_FRAME type frames, they were executed already before
1781 entering THISFRAME. */
1782 while (get_frame_type (frame) == TAILCALL_FRAME)
1783 frame = get_prev_frame (frame);
1785 /* Find the function we will return from. */
1787 function = find_pc_function (get_frame_pc (get_selected_frame (NULL)));
1789 /* Print info on the selected frame, including level number but not
1793 if (execution_direction == EXEC_REVERSE)
1794 printf_filtered (_("Run back to call of "));
1796 printf_filtered (_("Run till exit from "));
1798 print_stack_frame (get_selected_frame (NULL), 1, LOCATION);
1801 if (execution_direction == EXEC_REVERSE)
1802 finish_backward (function);
1804 finish_forward (function, frame);
1809 program_info (char *args, int from_tty)
1813 struct thread_info *tp;
1816 if (!target_has_execution)
1818 printf_filtered (_("The program being debugged is not being run.\n"));
1823 ptid = inferior_ptid;
1826 struct target_waitstatus ws;
1828 get_last_target_status (&ptid, &ws);
1831 if (ptid_equal (ptid, null_ptid) || is_exited (ptid))
1832 error (_("Invalid selected thread."));
1833 else if (is_running (ptid))
1834 error (_("Selected thread is running."));
1836 tp = find_thread_ptid (ptid);
1837 bs = tp->control.stop_bpstat;
1838 stat = bpstat_num (&bs, &num);
1840 target_files_info ();
1841 printf_filtered (_("Program stopped at %s.\n"),
1842 paddress (target_gdbarch, stop_pc));
1843 if (tp->control.stop_step)
1844 printf_filtered (_("It stopped after being stepped.\n"));
1847 /* There may be several breakpoints in the same place, so this
1848 isn't as strange as it seems. */
1853 printf_filtered (_("It stopped at a breakpoint "
1854 "that has since been deleted.\n"));
1857 printf_filtered (_("It stopped at breakpoint %d.\n"), num);
1858 stat = bpstat_num (&bs, &num);
1861 else if (tp->suspend.stop_signal != GDB_SIGNAL_0)
1863 printf_filtered (_("It stopped with signal %s, %s.\n"),
1864 gdb_signal_to_name (tp->suspend.stop_signal),
1865 gdb_signal_to_string (tp->suspend.stop_signal));
1870 printf_filtered (_("Type \"info stack\" or \"info "
1871 "registers\" for more information.\n"));
1876 environment_info (char *var, int from_tty)
1880 char *val = get_in_environ (current_inferior ()->environment, var);
1884 puts_filtered (var);
1885 puts_filtered (" = ");
1886 puts_filtered (val);
1887 puts_filtered ("\n");
1891 puts_filtered ("Environment variable \"");
1892 puts_filtered (var);
1893 puts_filtered ("\" not defined.\n");
1898 char **vector = environ_vector (current_inferior ()->environment);
1902 puts_filtered (*vector++);
1903 puts_filtered ("\n");
1909 set_environment_command (char *arg, int from_tty)
1911 char *p, *val, *var;
1915 error_no_arg (_("environment variable and value"));
1917 /* Find seperation between variable name and value. */
1918 p = (char *) strchr (arg, '=');
1919 val = (char *) strchr (arg, ' ');
1921 if (p != 0 && val != 0)
1923 /* We have both a space and an equals. If the space is before the
1924 equals, walk forward over the spaces til we see a nonspace
1925 (possibly the equals). */
1930 /* Now if the = is after the char following the spaces,
1931 take the char following the spaces. */
1935 else if (val != 0 && p == 0)
1939 error_no_arg (_("environment variable to set"));
1941 if (p == 0 || p[1] == 0)
1945 p = arg + strlen (arg); /* So that savestring below will work. */
1949 /* Not setting variable value to null. */
1951 while (*val == ' ' || *val == '\t')
1955 while (p != arg && (p[-1] == ' ' || p[-1] == '\t'))
1958 var = savestring (arg, p - arg);
1961 printf_filtered (_("Setting environment variable "
1962 "\"%s\" to null value.\n"),
1964 set_in_environ (current_inferior ()->environment, var, "");
1967 set_in_environ (current_inferior ()->environment, var, val);
1972 unset_environment_command (char *var, int from_tty)
1976 /* If there is no argument, delete all environment variables.
1977 Ask for confirmation if reading from the terminal. */
1978 if (!from_tty || query (_("Delete all environment variables? ")))
1980 free_environ (current_inferior ()->environment);
1981 current_inferior ()->environment = make_environ ();
1985 unset_in_environ (current_inferior ()->environment, var);
1988 /* Handle the execution path (PATH variable). */
1990 static const char path_var_name[] = "PATH";
1993 path_info (char *args, int from_tty)
1995 puts_filtered ("Executable and object file path: ");
1996 puts_filtered (get_in_environ (current_inferior ()->environment,
1998 puts_filtered ("\n");
2001 /* Add zero or more directories to the front of the execution path. */
2004 path_command (char *dirname, int from_tty)
2010 env = get_in_environ (current_inferior ()->environment, path_var_name);
2011 /* Can be null if path is not set. */
2014 exec_path = xstrdup (env);
2015 mod_path (dirname, &exec_path);
2016 set_in_environ (current_inferior ()->environment, path_var_name, exec_path);
2019 path_info ((char *) NULL, from_tty);
2023 /* Print out the machine register regnum. If regnum is -1, print all
2024 registers (print_all == 1) or all non-float and non-vector
2025 registers (print_all == 0).
2027 For most machines, having all_registers_info() print the
2028 register(s) one per line is good enough. If a different format is
2029 required, (eg, for MIPS or Pyramid 90x, which both have lots of
2030 regs), or there is an existing convention for showing all the
2031 registers, define the architecture method PRINT_REGISTERS_INFO to
2032 provide that format. */
2035 default_print_registers_info (struct gdbarch *gdbarch,
2036 struct ui_file *file,
2037 struct frame_info *frame,
2038 int regnum, int print_all)
2041 const int numregs = gdbarch_num_regs (gdbarch)
2042 + gdbarch_num_pseudo_regs (gdbarch);
2044 for (i = 0; i < numregs; i++)
2046 struct type *regtype;
2049 /* Decide between printing all regs, non-float / vector regs, or
2055 if (!gdbarch_register_reggroup_p (gdbarch, i, all_reggroup))
2060 if (!gdbarch_register_reggroup_p (gdbarch, i, general_reggroup))
2070 /* If the register name is empty, it is undefined for this
2071 processor, so don't display anything. */
2072 if (gdbarch_register_name (gdbarch, i) == NULL
2073 || *(gdbarch_register_name (gdbarch, i)) == '\0')
2076 fputs_filtered (gdbarch_register_name (gdbarch, i), file);
2077 print_spaces_filtered (15 - strlen (gdbarch_register_name
2078 (gdbarch, i)), file);
2080 regtype = register_type (gdbarch, i);
2081 val = allocate_value (regtype);
2083 /* Get the data in raw format. */
2084 if (! frame_register_read (frame, i, value_contents_raw (val)))
2086 fprintf_filtered (file, "*value not available*\n");
2090 /* If virtual format is floating, print it that way, and in raw
2092 if (TYPE_CODE (regtype) == TYPE_CODE_FLT
2093 || TYPE_CODE (regtype) == TYPE_CODE_DECFLOAT)
2096 struct value_print_options opts;
2097 const gdb_byte *valaddr = value_contents_for_printing (val);
2099 get_user_print_options (&opts);
2103 value_contents_for_printing (val),
2104 value_embedded_offset (val), 0,
2105 file, 0, val, &opts, current_language);
2107 fprintf_filtered (file, "\t(raw 0x");
2108 for (j = 0; j < register_size (gdbarch, i); j++)
2112 if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG)
2115 idx = register_size (gdbarch, i) - 1 - j;
2116 fprintf_filtered (file, "%02x", (unsigned char) valaddr[idx]);
2118 fprintf_filtered (file, ")");
2122 struct value_print_options opts;
2124 /* Print the register in hex. */
2125 get_formatted_print_options (&opts, 'x');
2128 value_contents_for_printing (val),
2129 value_embedded_offset (val), 0,
2130 file, 0, val, &opts, current_language);
2131 /* If not a vector register, print it also according to its
2133 if (TYPE_VECTOR (regtype) == 0)
2135 get_user_print_options (&opts);
2137 fprintf_filtered (file, "\t");
2139 value_contents_for_printing (val),
2140 value_embedded_offset (val), 0,
2141 file, 0, val, &opts, current_language);
2145 fprintf_filtered (file, "\n");
2150 registers_info (char *addr_exp, int fpregs)
2152 struct frame_info *frame;
2153 struct gdbarch *gdbarch;
2155 if (!target_has_registers)
2156 error (_("The program has no registers now."));
2157 frame = get_selected_frame (NULL);
2158 gdbarch = get_frame_arch (frame);
2162 gdbarch_print_registers_info (gdbarch, gdb_stdout,
2167 while (*addr_exp != '\0')
2172 /* Keep skipping leading white space. */
2173 if (isspace ((*addr_exp)))
2179 /* Discard any leading ``$''. Check that there is something
2180 resembling a register following it. */
2181 if (addr_exp[0] == '$')
2183 if (isspace ((*addr_exp)) || (*addr_exp) == '\0')
2184 error (_("Missing register name"));
2186 /* Find the start/end of this register name/num/group. */
2188 while ((*addr_exp) != '\0' && !isspace ((*addr_exp)))
2192 /* Figure out what we've found and display it. */
2194 /* A register name? */
2196 int regnum = user_reg_map_name_to_regnum (gdbarch, start, end - start);
2200 /* User registers lie completely outside of the range of
2201 normal registers. Catch them early so that the target
2203 if (regnum >= gdbarch_num_regs (gdbarch)
2204 + gdbarch_num_pseudo_regs (gdbarch))
2206 struct value_print_options opts;
2207 struct value *val = value_of_user_reg (regnum, frame);
2209 printf_filtered ("%.*s: ", (int) (end - start), start);
2210 get_formatted_print_options (&opts, 'x');
2211 val_print_scalar_formatted (check_typedef (value_type (val)),
2212 value_contents_for_printing (val),
2213 value_embedded_offset (val),
2215 &opts, 0, gdb_stdout);
2216 printf_filtered ("\n");
2219 gdbarch_print_registers_info (gdbarch, gdb_stdout,
2220 frame, regnum, fpregs);
2225 /* A register group? */
2227 struct reggroup *group;
2229 for (group = reggroup_next (gdbarch, NULL);
2231 group = reggroup_next (gdbarch, group))
2233 /* Don't bother with a length check. Should the user
2234 enter a short register group name, go with the first
2235 group that matches. */
2236 if (strncmp (start, reggroup_name (group), end - start) == 0)
2244 regnum < gdbarch_num_regs (gdbarch)
2245 + gdbarch_num_pseudo_regs (gdbarch);
2248 if (gdbarch_register_reggroup_p (gdbarch, regnum, group))
2249 gdbarch_print_registers_info (gdbarch,
2257 /* Nothing matched. */
2258 error (_("Invalid register `%.*s'"), (int) (end - start), start);
2263 all_registers_info (char *addr_exp, int from_tty)
2265 registers_info (addr_exp, 1);
2269 nofp_registers_info (char *addr_exp, int from_tty)
2271 registers_info (addr_exp, 0);
2275 print_vector_info (struct ui_file *file,
2276 struct frame_info *frame, const char *args)
2278 struct gdbarch *gdbarch = get_frame_arch (frame);
2280 if (gdbarch_print_vector_info_p (gdbarch))
2281 gdbarch_print_vector_info (gdbarch, file, frame, args);
2285 int printed_something = 0;
2288 regnum < gdbarch_num_regs (gdbarch)
2289 + gdbarch_num_pseudo_regs (gdbarch);
2292 if (gdbarch_register_reggroup_p (gdbarch, regnum, vector_reggroup))
2294 printed_something = 1;
2295 gdbarch_print_registers_info (gdbarch, file, frame, regnum, 1);
2298 if (!printed_something)
2299 fprintf_filtered (file, "No vector information\n");
2304 vector_info (char *args, int from_tty)
2306 if (!target_has_registers)
2307 error (_("The program has no registers now."));
2309 print_vector_info (gdb_stdout, get_selected_frame (NULL), args);
2312 /* Kill the inferior process. Make us have no inferior. */
2315 kill_command (char *arg, int from_tty)
2317 /* FIXME: This should not really be inferior_ptid (or target_has_execution).
2318 It should be a distinct flag that indicates that a target is active, cuz
2319 some targets don't have processes! */
2321 if (ptid_equal (inferior_ptid, null_ptid))
2322 error (_("The program is not being run."));
2323 if (!query (_("Kill the program being debugged? ")))
2324 error (_("Not confirmed."));
2327 /* If we still have other inferiors to debug, then don't mess with
2328 with their threads. */
2329 if (!have_inferiors ())
2331 init_thread_list (); /* Destroy thread info. */
2333 /* Killing off the inferior can leave us with a core file. If
2334 so, print the state we are left in. */
2335 if (target_has_stack)
2337 printf_filtered (_("In %s,\n"), target_longname);
2338 print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC);
2341 bfd_cache_close_all ();
2344 /* Used in `attach&' command. ARG is a point to an integer
2345 representing a process id. Proceed threads of this process iff
2346 they stopped due to debugger request, and when they did, they
2347 reported a clean stop (GDB_SIGNAL_0). Do not proceed threads
2348 that have been explicitly been told to stop. */
2351 proceed_after_attach_callback (struct thread_info *thread,
2354 int pid = * (int *) arg;
2356 if (ptid_get_pid (thread->ptid) == pid
2357 && !is_exited (thread->ptid)
2358 && !is_executing (thread->ptid)
2359 && !thread->stop_requested
2360 && thread->suspend.stop_signal == GDB_SIGNAL_0)
2362 switch_to_thread (thread->ptid);
2363 clear_proceed_status ();
2364 proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT, 0);
2371 proceed_after_attach (int pid)
2373 /* Don't error out if the current thread is running, because
2374 there may be other stopped threads. */
2375 struct cleanup *old_chain;
2377 /* Backup current thread and selected frame. */
2378 old_chain = make_cleanup_restore_current_thread ();
2380 iterate_over_threads (proceed_after_attach_callback, &pid);
2382 /* Restore selected ptid. */
2383 do_cleanups (old_chain);
2388 * Should save/restore the tty state since it might be that the
2389 * program to be debugged was started on this tty and it wants
2390 * the tty in some state other than what we want. If it's running
2391 * on another terminal or without a terminal, then saving and
2392 * restoring the tty state is a harmless no-op.
2393 * This only needs to be done if we are attaching to a process.
2396 /* attach_command --
2397 takes a program started up outside of gdb and ``attaches'' to it.
2398 This stops it cold in its tracks and allows us to start debugging it.
2399 and wait for the trace-trap that results from attaching. */
2402 attach_command_post_wait (char *args, int from_tty, int async_exec)
2405 char *full_exec_path = NULL;
2406 struct inferior *inferior;
2408 inferior = current_inferior ();
2409 inferior->control.stop_soon = NO_STOP_QUIETLY;
2411 /* If no exec file is yet known, try to determine it from the
2413 exec_file = (char *) get_exec_file (0);
2416 exec_file = target_pid_to_exec_file (PIDGET (inferior_ptid));
2419 /* It's possible we don't have a full path, but rather just a
2420 filename. Some targets, such as HP-UX, don't provide the
2423 Attempt to qualify the filename against the source path.
2424 (If that fails, we'll just fall back on the original
2425 filename. Not much more we can do...) */
2427 if (!source_full_path_of (exec_file, &full_exec_path))
2428 full_exec_path = xstrdup (exec_file);
2430 exec_file_attach (full_exec_path, from_tty);
2431 symbol_file_add_main (full_exec_path, from_tty);
2436 reopen_exec_file ();
2440 /* Take any necessary post-attaching actions for this platform. */
2441 target_post_attach (PIDGET (inferior_ptid));
2443 post_create_inferior (¤t_target, from_tty);
2445 /* Install inferior's terminal modes. */
2446 target_terminal_inferior ();
2450 /* The user requested an `attach&', so be sure to leave threads
2451 that didn't get a signal running. */
2453 /* Immediatelly resume all suspended threads of this inferior,
2454 and this inferior only. This should have no effect on
2455 already running threads. If a thread has been stopped with a
2456 signal, leave it be. */
2458 proceed_after_attach (inferior->pid);
2461 if (inferior_thread ()->suspend.stop_signal == GDB_SIGNAL_0)
2463 clear_proceed_status ();
2464 proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT, 0);
2470 /* The user requested a plain `attach', so be sure to leave
2471 the inferior stopped. */
2473 if (target_can_async_p ())
2474 async_enable_stdin ();
2476 /* At least the current thread is already stopped. */
2478 /* In all-stop, by definition, all threads have to be already
2479 stopped at this point. In non-stop, however, although the
2480 selected thread is stopped, others may still be executing.
2481 Be sure to explicitly stop all threads of the process. This
2482 should have no effect on already stopped threads. */
2484 target_stop (pid_to_ptid (inferior->pid));
2486 /* Tell the user/frontend where we're stopped. */
2488 if (deprecated_attach_hook)
2489 deprecated_attach_hook ();
2493 struct attach_command_continuation_args
2501 attach_command_continuation (void *args, int err)
2503 struct attach_command_continuation_args *a = args;
2508 attach_command_post_wait (a->args, a->from_tty, a->async_exec);
2512 attach_command_continuation_free_args (void *args)
2514 struct attach_command_continuation_args *a = args;
2521 attach_command (char *args, int from_tty)
2524 struct cleanup *back_to = make_cleanup (null_cleanup, NULL);
2526 dont_repeat (); /* Not for the faint of heart */
2528 if (gdbarch_has_global_solist (target_gdbarch))
2529 /* Don't complain if all processes share the same symbol
2532 else if (target_has_execution)
2534 if (query (_("A program is being debugged already. Kill it? ")))
2537 error (_("Not killed."));
2540 /* Clean up any leftovers from other runs. Some other things from
2541 this function should probably be moved into target_pre_inferior. */
2542 target_pre_inferior (from_tty);
2544 if (non_stop && !target_supports_non_stop ())
2545 error (_("Cannot attach to this target in non-stop mode"));
2549 async_exec = strip_bg_char (&args);
2551 /* If we get a request for running in the bg but the target
2552 doesn't support it, error out. */
2553 if (async_exec && !target_can_async_p ())
2554 error (_("Asynchronous execution not supported on this target."));
2557 /* If we don't get a request of running in the bg, then we need
2558 to simulate synchronous (fg) execution. */
2559 if (!async_exec && target_can_async_p ())
2561 /* Simulate synchronous execution. */
2562 async_disable_stdin ();
2563 make_cleanup ((make_cleanup_ftype *)async_enable_stdin, NULL);
2566 target_attach (args, from_tty);
2568 /* Set up the "saved terminal modes" of the inferior
2569 based on what modes we are starting it with. */
2570 target_terminal_init ();
2572 /* Set up execution context to know that we should return from
2573 wait_for_inferior as soon as the target reports a stop. */
2574 init_wait_for_inferior ();
2575 clear_proceed_status ();
2579 /* If we find that the current thread isn't stopped, explicitly
2580 do so now, because we're going to install breakpoints and
2584 /* The user requested an `attach&'; stop just one thread. */
2585 target_stop (inferior_ptid);
2587 /* The user requested an `attach', so stop all threads of this
2589 target_stop (pid_to_ptid (ptid_get_pid (inferior_ptid)));
2592 /* Some system don't generate traps when attaching to inferior.
2593 E.g. Mach 3 or GNU hurd. */
2594 if (!target_attach_no_wait)
2596 struct inferior *inferior = current_inferior ();
2598 /* Careful here. See comments in inferior.h. Basically some
2599 OSes don't ignore SIGSTOPs on continue requests anymore. We
2600 need a way for handle_inferior_event to reset the stop_signal
2601 variable after an attach, and this is what
2602 STOP_QUIETLY_NO_SIGSTOP is for. */
2603 inferior->control.stop_soon = STOP_QUIETLY_NO_SIGSTOP;
2605 if (target_can_async_p ())
2607 /* sync_execution mode. Wait for stop. */
2608 struct attach_command_continuation_args *a;
2610 a = xmalloc (sizeof (*a));
2611 a->args = xstrdup (args);
2612 a->from_tty = from_tty;
2613 a->async_exec = async_exec;
2614 add_inferior_continuation (attach_command_continuation, a,
2615 attach_command_continuation_free_args);
2616 discard_cleanups (back_to);
2620 wait_for_inferior ();
2623 attach_command_post_wait (args, from_tty, async_exec);
2624 discard_cleanups (back_to);
2627 /* We had just found out that the target was already attached to an
2628 inferior. PTID points at a thread of this new inferior, that is
2629 the most likely to be stopped right now, but not necessarily so.
2630 The new inferior is assumed to be already added to the inferior
2631 list at this point. If LEAVE_RUNNING, then leave the threads of
2632 this inferior running, except those we've explicitly seen reported
2636 notice_new_inferior (ptid_t ptid, int leave_running, int from_tty)
2638 struct cleanup* old_chain;
2641 old_chain = make_cleanup (null_cleanup, NULL);
2643 /* If in non-stop, leave threads as running as they were. If
2644 they're stopped for some reason other than us telling it to, the
2645 target reports a signal != GDB_SIGNAL_0. We don't try to
2646 resume threads with such a stop signal. */
2647 async_exec = non_stop;
2649 if (!ptid_equal (inferior_ptid, null_ptid))
2650 make_cleanup_restore_current_thread ();
2652 switch_to_thread (ptid);
2654 /* When we "notice" a new inferior we need to do all the things we
2655 would normally do if we had just attached to it. */
2657 if (is_executing (inferior_ptid))
2659 struct inferior *inferior = current_inferior ();
2661 /* We're going to install breakpoints, and poke at memory,
2662 ensure that the inferior is stopped for a moment while we do
2664 target_stop (inferior_ptid);
2666 inferior->control.stop_soon = STOP_QUIETLY_REMOTE;
2668 /* Wait for stop before proceeding. */
2669 if (target_can_async_p ())
2671 struct attach_command_continuation_args *a;
2673 a = xmalloc (sizeof (*a));
2674 a->args = xstrdup ("");
2675 a->from_tty = from_tty;
2676 a->async_exec = async_exec;
2677 add_inferior_continuation (attach_command_continuation, a,
2678 attach_command_continuation_free_args);
2680 do_cleanups (old_chain);
2684 wait_for_inferior ();
2687 async_exec = leave_running;
2688 attach_command_post_wait ("" /* args */, from_tty, async_exec);
2690 do_cleanups (old_chain);
2695 * takes a program previously attached to and detaches it.
2696 * The program resumes execution and will no longer stop
2697 * on signals, etc. We better not have left any breakpoints
2698 * in the program or it'll die when it hits one. For this
2699 * to work, it may be necessary for the process to have been
2700 * previously attached. It *might* work if the program was
2701 * started via the normal ptrace (PTRACE_TRACEME).
2705 detach_command (char *args, int from_tty)
2707 dont_repeat (); /* Not for the faint of heart. */
2709 if (ptid_equal (inferior_ptid, null_ptid))
2710 error (_("The program is not being run."));
2712 disconnect_tracing (from_tty);
2714 target_detach (args, from_tty);
2716 /* If the solist is global across inferiors, don't clear it when we
2717 detach from a single inferior. */
2718 if (!gdbarch_has_global_solist (target_gdbarch))
2719 no_shared_libraries (NULL, from_tty);
2721 /* If we still have inferiors to debug, then don't mess with their
2723 if (!have_inferiors ())
2724 init_thread_list ();
2726 if (deprecated_detach_hook)
2727 deprecated_detach_hook ();
2730 /* Disconnect from the current target without resuming it (leaving it
2731 waiting for a debugger).
2733 We'd better not have left any breakpoints in the program or the
2734 next debugger will get confused. Currently only supported for some
2735 remote targets, since the normal attach mechanisms don't work on
2736 stopped processes on some native platforms (e.g. GNU/Linux). */
2739 disconnect_command (char *args, int from_tty)
2741 dont_repeat (); /* Not for the faint of heart. */
2742 disconnect_tracing (from_tty);
2743 target_disconnect (args, from_tty);
2744 no_shared_libraries (NULL, from_tty);
2745 init_thread_list ();
2746 if (deprecated_detach_hook)
2747 deprecated_detach_hook ();
2751 interrupt_target_1 (int all_threads)
2756 ptid = minus_one_ptid;
2758 ptid = inferior_ptid;
2761 /* Tag the thread as having been explicitly requested to stop, so
2762 other parts of gdb know not to resume this thread automatically,
2763 if it was stopped due to an internal event. Limit this to
2764 non-stop mode, as when debugging a multi-threaded application in
2765 all-stop mode, we will only get one stop event --- it's undefined
2766 which thread will report the event. */
2768 set_stop_requested (ptid, 1);
2771 /* Stop the execution of the target while running in async mode, in
2772 the backgound. In all-stop, stop the whole process. In non-stop
2773 mode, stop the current thread only by default, or stop all threads
2774 if the `-a' switch is used. */
2776 /* interrupt [-a] */
2778 interrupt_target_command (char *args, int from_tty)
2780 if (target_can_async_p ())
2782 int all_threads = 0;
2784 dont_repeat (); /* Not for the faint of heart. */
2787 && strncmp (args, "-a", sizeof ("-a") - 1) == 0)
2790 if (!non_stop && all_threads)
2791 error (_("-a is meaningless in all-stop mode."));
2793 interrupt_target_1 (all_threads);
2798 print_float_info (struct ui_file *file,
2799 struct frame_info *frame, const char *args)
2801 struct gdbarch *gdbarch = get_frame_arch (frame);
2803 if (gdbarch_print_float_info_p (gdbarch))
2804 gdbarch_print_float_info (gdbarch, file, frame, args);
2808 int printed_something = 0;
2811 regnum < gdbarch_num_regs (gdbarch)
2812 + gdbarch_num_pseudo_regs (gdbarch);
2815 if (gdbarch_register_reggroup_p (gdbarch, regnum, float_reggroup))
2817 printed_something = 1;
2818 gdbarch_print_registers_info (gdbarch, file, frame, regnum, 1);
2821 if (!printed_something)
2822 fprintf_filtered (file, "No floating-point info "
2823 "available for this processor.\n");
2828 float_info (char *args, int from_tty)
2830 if (!target_has_registers)
2831 error (_("The program has no registers now."));
2833 print_float_info (gdb_stdout, get_selected_frame (NULL), args);
2837 unset_command (char *args, int from_tty)
2839 printf_filtered (_("\"unset\" must be followed by the "
2840 "name of an unset subcommand.\n"));
2841 help_list (unsetlist, "unset ", -1, gdb_stdout);
2844 /* Implement `info proc' family of commands. */
2847 info_proc_cmd_1 (char *args, enum info_proc_what what, int from_tty)
2849 struct gdbarch *gdbarch = get_current_arch ();
2851 if (gdbarch_info_proc_p (gdbarch))
2852 gdbarch_info_proc (gdbarch, args, what);
2854 target_info_proc (args, what);
2857 /* Implement `info proc' when given without any futher parameters. */
2860 info_proc_cmd (char *args, int from_tty)
2862 info_proc_cmd_1 (args, IP_MINIMAL, from_tty);
2865 /* Implement `info proc mappings'. */
2868 info_proc_cmd_mappings (char *args, int from_tty)
2870 info_proc_cmd_1 (args, IP_MAPPINGS, from_tty);
2873 /* Implement `info proc stat'. */
2876 info_proc_cmd_stat (char *args, int from_tty)
2878 info_proc_cmd_1 (args, IP_STAT, from_tty);
2881 /* Implement `info proc status'. */
2884 info_proc_cmd_status (char *args, int from_tty)
2886 info_proc_cmd_1 (args, IP_STATUS, from_tty);
2889 /* Implement `info proc cwd'. */
2892 info_proc_cmd_cwd (char *args, int from_tty)
2894 info_proc_cmd_1 (args, IP_CWD, from_tty);
2897 /* Implement `info proc cmdline'. */
2900 info_proc_cmd_cmdline (char *args, int from_tty)
2902 info_proc_cmd_1 (args, IP_CMDLINE, from_tty);
2905 /* Implement `info proc exe'. */
2908 info_proc_cmd_exe (char *args, int from_tty)
2910 info_proc_cmd_1 (args, IP_EXE, from_tty);
2913 /* Implement `info proc all'. */
2916 info_proc_cmd_all (char *args, int from_tty)
2918 info_proc_cmd_1 (args, IP_ALL, from_tty);
2922 _initialize_infcmd (void)
2924 static struct cmd_list_element *info_proc_cmdlist;
2925 struct cmd_list_element *c = NULL;
2927 /* Add the filename of the terminal connected to inferior I/O. */
2928 add_setshow_filename_cmd ("inferior-tty", class_run,
2929 &inferior_io_terminal_scratch, _("\
2930 Set terminal for future runs of program being debugged."), _("\
2931 Show terminal for future runs of program being debugged."), _("\
2932 Usage: set inferior-tty /dev/pts/1"),
2933 set_inferior_tty_command,
2934 show_inferior_tty_command,
2935 &setlist, &showlist);
2936 add_com_alias ("tty", "set inferior-tty", class_alias, 0);
2938 add_setshow_optional_filename_cmd ("args", class_run,
2939 &inferior_args_scratch, _("\
2940 Set argument list to give program being debugged when it is started."), _("\
2941 Show argument list to give program being debugged when it is started."), _("\
2942 Follow this command with any number of args, to be passed to the program."),
2945 &setlist, &showlist);
2947 c = add_cmd ("environment", no_class, environment_info, _("\
2948 The environment to give the program, or one variable's value.\n\
2949 With an argument VAR, prints the value of environment variable VAR to\n\
2950 give the program being debugged. With no arguments, prints the entire\n\
2951 environment to be given to the program."), &showlist);
2952 set_cmd_completer (c, noop_completer);
2954 add_prefix_cmd ("unset", no_class, unset_command,
2955 _("Complement to certain \"set\" commands."),
2956 &unsetlist, "unset ", 0, &cmdlist);
2958 c = add_cmd ("environment", class_run, unset_environment_command, _("\
2959 Cancel environment variable VAR for the program.\n\
2960 This does not affect the program until the next \"run\" command."),
2962 set_cmd_completer (c, noop_completer);
2964 c = add_cmd ("environment", class_run, set_environment_command, _("\
2965 Set environment variable value to give the program.\n\
2966 Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\
2967 VALUES of environment variables are uninterpreted strings.\n\
2968 This does not affect the program until the next \"run\" command."),
2970 set_cmd_completer (c, noop_completer);
2972 c = add_com ("path", class_files, path_command, _("\
2973 Add directory DIR(s) to beginning of search path for object files.\n\
2974 $cwd in the path means the current working directory.\n\
2975 This path is equivalent to the $PATH shell variable. It is a list of\n\
2976 directories, separated by colons. These directories are searched to find\n\
2977 fully linked executable files and separately compiled object files as \
2979 set_cmd_completer (c, filename_completer);
2981 c = add_cmd ("paths", no_class, path_info, _("\
2982 Current search path for finding object files.\n\
2983 $cwd in the path means the current working directory.\n\
2984 This path is equivalent to the $PATH shell variable. It is a list of\n\
2985 directories, separated by colons. These directories are searched to find\n\
2986 fully linked executable files and separately compiled object files as \
2989 set_cmd_completer (c, noop_completer);
2991 add_prefix_cmd ("kill", class_run, kill_command,
2992 _("Kill execution of program being debugged."),
2993 &killlist, "kill ", 0, &cmdlist);
2995 add_com ("attach", class_run, attach_command, _("\
2996 Attach to a process or file outside of GDB.\n\
2997 This command attaches to another target, of the same type as your last\n\
2998 \"target\" command (\"info files\" will show your target stack).\n\
2999 The command may take as argument a process id or a device file.\n\
3000 For a process id, you must have permission to send the process a signal,\n\
3001 and it must have the same effective uid as the debugger.\n\
3002 When using \"attach\" with a process id, the debugger finds the\n\
3003 program running in the process, looking first in the current working\n\
3004 directory, or (if not found there) using the source file search path\n\
3005 (see the \"directory\" command). You can also use the \"file\" command\n\
3006 to specify the program, and to load its symbol table."));
3008 add_prefix_cmd ("detach", class_run, detach_command, _("\
3009 Detach a process or file previously attached.\n\
3010 If a process, it is no longer traced, and it continues its execution. If\n\
3011 you were debugging a file, the file is closed and gdb no longer accesses it."),
3012 &detachlist, "detach ", 0, &cmdlist);
3014 add_com ("disconnect", class_run, disconnect_command, _("\
3015 Disconnect from a target.\n\
3016 The target will wait for another debugger to connect. Not available for\n\
3019 add_com ("signal", class_run, signal_command, _("\
3020 Continue program giving it signal specified by the argument.\n\
3021 An argument of \"0\" means continue program without giving it a signal."));
3023 add_com ("stepi", class_run, stepi_command, _("\
3024 Step one instruction exactly.\n\
3025 Argument N means do this N times (or till program stops for another \
3027 add_com_alias ("si", "stepi", class_alias, 0);
3029 add_com ("nexti", class_run, nexti_command, _("\
3030 Step one instruction, but proceed through subroutine calls.\n\
3031 Argument N means do this N times (or till program stops for another \
3033 add_com_alias ("ni", "nexti", class_alias, 0);
3035 add_com ("finish", class_run, finish_command, _("\
3036 Execute until selected stack frame returns.\n\
3037 Upon return, the value returned is printed and put in the value history."));
3038 add_com_alias ("fin", "finish", class_run, 1);
3040 add_com ("next", class_run, next_command, _("\
3041 Step program, proceeding through subroutine calls.\n\
3042 Like the \"step\" command as long as subroutine calls do not happen;\n\
3043 when they do, the call is treated as one instruction.\n\
3044 Argument N means do this N times (or till program stops for another \
3046 add_com_alias ("n", "next", class_run, 1);
3048 add_com_alias ("S", "next", class_run, 1);
3050 add_com ("step", class_run, step_command, _("\
3051 Step program until it reaches a different source line.\n\
3052 Argument N means do this N times (or till program stops for another \
3054 add_com_alias ("s", "step", class_run, 1);
3056 c = add_com ("until", class_run, until_command, _("\
3057 Execute until the program reaches a source line greater than the current\n\
3058 or a specified location (same args as break command) within the current \
3060 set_cmd_completer (c, location_completer);
3061 add_com_alias ("u", "until", class_run, 1);
3063 c = add_com ("advance", class_run, advance_command, _("\
3064 Continue the program up to the given location (same form as args for break \
3066 Execution will also stop upon exit from the current stack frame."));
3067 set_cmd_completer (c, location_completer);
3069 c = add_com ("jump", class_run, jump_command, _("\
3070 Continue program being debugged at specified line or address.\n\
3071 Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\
3072 for an address to start at."));
3073 set_cmd_completer (c, location_completer);
3077 c = add_com ("go", class_run, go_command, _("\
3078 Usage: go <location>\n\
3079 Continue program being debugged, stopping at specified line or \n\
3081 Give as argument either LINENUM or *ADDR, where ADDR is an \n\
3082 expression for an address to start at.\n\
3083 This command is a combination of tbreak and jump."));
3084 set_cmd_completer (c, location_completer);
3088 add_com_alias ("g", "go", class_run, 1);
3090 add_com ("continue", class_run, continue_command, _("\
3091 Continue program being debugged, after signal or breakpoint.\n\
3092 If proceeding from breakpoint, a number N may be used as an argument,\n\
3093 which means to set the ignore count of that breakpoint to N - 1 (so that\n\
3094 the breakpoint won't break until the Nth time it is reached).\n\
3096 If non-stop mode is enabled, continue only the current thread,\n\
3097 otherwise all the threads in the program are continued. To \n\
3098 continue all stopped threads in non-stop mode, use the -a option.\n\
3099 Specifying -a and an ignore count simultaneously is an error."));
3100 add_com_alias ("c", "cont", class_run, 1);
3101 add_com_alias ("fg", "cont", class_run, 1);
3103 c = add_com ("run", class_run, run_command, _("\
3104 Start debugged program. You may specify arguments to give it.\n\
3105 Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\
3106 Input and output redirection with \">\", \"<\", or \">>\" are also \
3108 With no arguments, uses arguments last specified (with \"run\" \
3109 or \"set args\").\n\
3110 To cancel previous arguments and run with no arguments,\n\
3111 use \"set args\" without arguments."));
3112 set_cmd_completer (c, filename_completer);
3113 add_com_alias ("r", "run", class_run, 1);
3115 add_com ("R", class_run, run_no_args_command,
3116 _("Start debugged program with no arguments."));
3118 c = add_com ("start", class_run, start_command, _("\
3119 Run the debugged program until the beginning of the main procedure.\n\
3120 You may specify arguments to give to your program, just as with the\n\
3121 \"run\" command."));
3122 set_cmd_completer (c, filename_completer);
3124 add_com ("interrupt", class_run, interrupt_target_command,
3125 _("Interrupt the execution of the debugged program.\n\
3126 If non-stop mode is enabled, interrupt only the current thread,\n\
3127 otherwise all the threads in the program are stopped. To \n\
3128 interrupt all running threads in non-stop mode, use the -a option."));
3130 add_info ("registers", nofp_registers_info, _("\
3131 List of integer registers and their contents, for selected stack frame.\n\
3132 Register name as argument means describe only that register."));
3133 add_info_alias ("r", "registers", 1);
3136 add_com ("lr", class_info, nofp_registers_info, _("\
3137 List of integer registers and their contents, for selected stack frame.\n\
3138 Register name as argument means describe only that register."));
3139 add_info ("all-registers", all_registers_info, _("\
3140 List of all registers and their contents, for selected stack frame.\n\
3141 Register name as argument means describe only that register."));
3143 add_info ("program", program_info,
3144 _("Execution status of the program."));
3146 add_info ("float", float_info,
3147 _("Print the status of the floating point unit\n"));
3149 add_info ("vector", vector_info,
3150 _("Print the status of the vector unit\n"));
3152 add_prefix_cmd ("proc", class_info, info_proc_cmd,
3154 Show /proc process information about any running process.\n\
3155 Specify any process id, or use the program being debugged by default."),
3156 &info_proc_cmdlist, "info proc ",
3157 1/*allow-unknown*/, &infolist);
3159 add_cmd ("mappings", class_info, info_proc_cmd_mappings, _("\
3160 List of mapped memory regions."),
3161 &info_proc_cmdlist);
3163 add_cmd ("stat", class_info, info_proc_cmd_stat, _("\
3164 List process info from /proc/PID/stat."),
3165 &info_proc_cmdlist);
3167 add_cmd ("status", class_info, info_proc_cmd_status, _("\
3168 List process info from /proc/PID/status."),
3169 &info_proc_cmdlist);
3171 add_cmd ("cwd", class_info, info_proc_cmd_cwd, _("\
3172 List current working directory of the process."),
3173 &info_proc_cmdlist);
3175 add_cmd ("cmdline", class_info, info_proc_cmd_cmdline, _("\
3176 List command line arguments of the process."),
3177 &info_proc_cmdlist);
3179 add_cmd ("exe", class_info, info_proc_cmd_exe, _("\
3180 List absolute filename for executable of the process."),
3181 &info_proc_cmdlist);
3183 add_cmd ("all", class_info, info_proc_cmd_all, _("\
3184 List all available /proc info."),
3185 &info_proc_cmdlist);