1 /* Memory-access and commands for "inferior" process, for GDB.
3 Copyright (C) 1986-2014 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
21 #include "arch-utils.h"
37 #include "completer.h"
39 #include "event-top.h"
40 #include "parser-defs.h"
42 #include "reggroups.h"
46 #include "gdb_assert.h"
48 #include "target-descriptions.h"
49 #include "user-regs.h"
50 #include "exceptions.h"
51 #include "cli/cli-decode.h"
52 #include "gdbthread.h"
54 #include "inline-frame.h"
55 #include "tracepoint.h"
57 #include "continuations.h"
59 #include "cli/cli-utils.h"
61 /* Local functions: */
63 static void nofp_registers_info (char *, int);
65 static void print_return_value (struct value *function,
66 struct type *value_type);
68 static void until_next_command (int);
70 static void until_command (char *, int);
72 static void path_info (char *, int);
74 static void path_command (char *, int);
76 static void unset_command (char *, int);
78 static void float_info (char *, int);
80 static void disconnect_command (char *, int);
82 static void unset_environment_command (char *, int);
84 static void set_environment_command (char *, int);
86 static void environment_info (char *, int);
88 static void program_info (char *, int);
90 static void finish_command (char *, int);
92 static void signal_command (char *, int);
94 static void jump_command (char *, int);
96 static void step_1 (int, int, char *);
97 static void step_once (int skip_subroutines, int single_inst,
98 int count, int thread);
100 static void next_command (char *, int);
102 static void step_command (char *, int);
104 static void run_command (char *, int);
106 static void run_no_args_command (char *args, int from_tty);
108 static void go_command (char *line_no, int from_tty);
110 static int strip_bg_char (char **);
112 void _initialize_infcmd (void);
114 #define ERROR_NO_INFERIOR \
115 if (!target_has_execution) error (_("The program is not being run."));
117 /* Scratch area where string containing arguments to give to the
118 program will be stored by 'set args'. As soon as anything is
119 stored, notice_args_set will move it into per-inferior storage.
120 Arguments are separated by spaces. Empty string (pointer to '\0')
123 static char *inferior_args_scratch;
125 /* Scratch area where 'set inferior-tty' will store user-provided value.
126 We'll immediate copy it into per-inferior storage. */
128 static char *inferior_io_terminal_scratch;
130 /* Pid of our debugged inferior, or 0 if no inferior now.
131 Since various parts of infrun.c test this to see whether there is a program
132 being debugged it should be nonzero (currently 3 is used) for remote
135 ptid_t inferior_ptid;
137 /* Address at which inferior stopped. */
141 /* Nonzero if stopped due to completion of a stack dummy routine. */
143 enum stop_stack_kind stop_stack_dummy;
145 /* Nonzero if stopped due to a random (unexpected) signal in inferior
148 int stopped_by_random_signal;
150 /* See inferior.h. */
152 int startup_with_shell = 1;
155 /* Accessor routines. */
157 /* Set the io terminal for the current inferior. Ownership of
158 TERMINAL_NAME is not transferred. */
161 set_inferior_io_terminal (const char *terminal_name)
163 xfree (current_inferior ()->terminal);
164 current_inferior ()->terminal = terminal_name ? xstrdup (terminal_name) : 0;
168 get_inferior_io_terminal (void)
170 return current_inferior ()->terminal;
174 set_inferior_tty_command (char *args, int from_tty,
175 struct cmd_list_element *c)
177 /* CLI has assigned the user-provided value to inferior_io_terminal_scratch.
178 Now route it to current inferior. */
179 set_inferior_io_terminal (inferior_io_terminal_scratch);
183 show_inferior_tty_command (struct ui_file *file, int from_tty,
184 struct cmd_list_element *c, const char *value)
186 /* Note that we ignore the passed-in value in favor of computing it
188 const char *inferior_io_terminal = get_inferior_io_terminal ();
190 if (inferior_io_terminal == NULL)
191 inferior_io_terminal = "";
192 fprintf_filtered (gdb_stdout,
193 _("Terminal for future runs of program being debugged "
194 "is \"%s\".\n"), inferior_io_terminal);
198 get_inferior_args (void)
200 if (current_inferior ()->argc != 0)
204 n = construct_inferior_arguments (current_inferior ()->argc,
205 current_inferior ()->argv);
206 set_inferior_args (n);
210 if (current_inferior ()->args == NULL)
211 current_inferior ()->args = xstrdup ("");
213 return current_inferior ()->args;
216 /* Set the arguments for the current inferior. Ownership of
217 NEWARGS is not transferred. */
220 set_inferior_args (char *newargs)
222 xfree (current_inferior ()->args);
223 current_inferior ()->args = newargs ? xstrdup (newargs) : NULL;
224 current_inferior ()->argc = 0;
225 current_inferior ()->argv = 0;
229 set_inferior_args_vector (int argc, char **argv)
231 current_inferior ()->argc = argc;
232 current_inferior ()->argv = argv;
235 /* Notice when `set args' is run. */
238 set_args_command (char *args, int from_tty, struct cmd_list_element *c)
240 /* CLI has assigned the user-provided value to inferior_args_scratch.
241 Now route it to current inferior. */
242 set_inferior_args (inferior_args_scratch);
245 /* Notice when `show args' is run. */
248 show_args_command (struct ui_file *file, int from_tty,
249 struct cmd_list_element *c, const char *value)
251 /* Note that we ignore the passed-in value in favor of computing it
253 deprecated_show_value_hack (file, from_tty, c, get_inferior_args ());
257 /* Compute command-line string given argument vector. This does the
258 same shell processing as fork_inferior. */
261 construct_inferior_arguments (int argc, char **argv)
265 if (startup_with_shell)
268 /* This holds all the characters considered special to the
270 char *special = "\"!&*|[]{}<>?`~^=;, \t\n";
271 const char quote = '"';
273 /* This holds all the characters considered special to the
274 typical Unix shells. We include `^' because the SunOS
275 /bin/sh treats it as a synonym for `|'. */
276 char *special = "\"!#$&*()\\|[]{}<>?'`~^; \t\n";
277 const char quote = '\'';
283 /* We over-compute the size. It shouldn't matter. */
284 for (i = 0; i < argc; ++i)
285 length += 3 * strlen (argv[i]) + 1 + 2 * (argv[i][0] == '\0');
287 result = (char *) xmalloc (length);
290 for (i = 0; i < argc; ++i)
295 /* Need to handle empty arguments specially. */
296 if (argv[i][0] == '\0')
306 if (strpbrk (argv[i], special))
312 for (cp = argv[i]; *cp; ++cp)
316 /* A newline cannot be quoted with a backslash (it
317 just disappears), only by putting it inside
328 if (strchr (special, *cp) != NULL)
344 /* In this case we can't handle arguments that contain spaces,
345 tabs, or newlines -- see breakup_args(). */
349 for (i = 0; i < argc; ++i)
351 char *cp = strchr (argv[i], ' ');
353 cp = strchr (argv[i], '\t');
355 cp = strchr (argv[i], '\n');
357 error (_("can't handle command-line "
358 "argument containing whitespace"));
359 length += strlen (argv[i]) + 1;
362 result = (char *) xmalloc (length);
364 for (i = 0; i < argc; ++i)
367 strcat (result, " ");
368 strcat (result, argv[i]);
376 /* This function detects whether or not a '&' character (indicating
377 background execution) has been added as *the last* of the arguments ARGS
378 of a command. If it has, it removes it and returns 1. Otherwise it
379 does nothing and returns 0. */
382 strip_bg_char (char **args)
386 p = strchr (*args, '&');
390 if (p == (*args + strlen (*args) - 1))
392 if (strlen (*args) > 1)
396 while (*p == ' ' || *p == '\t');
407 /* Common actions to take after creating any sort of inferior, by any
408 means (running, attaching, connecting, et cetera). The target
409 should be stopped. */
412 post_create_inferior (struct target_ops *target, int from_tty)
414 volatile struct gdb_exception ex;
416 /* Be sure we own the terminal in case write operations are performed. */
417 target_terminal_ours ();
419 /* If the target hasn't taken care of this already, do it now.
420 Targets which need to access registers during to_open,
421 to_create_inferior, or to_attach should do it earlier; but many
423 target_find_description ();
425 /* Now that we know the register layout, retrieve current PC. But
426 if the PC is unavailable (e.g., we're opening a core file with
427 missing registers info), ignore it. */
429 TRY_CATCH (ex, RETURN_MASK_ERROR)
431 stop_pc = regcache_read_pc (get_current_regcache ());
433 if (ex.reason < 0 && ex.error != NOT_AVAILABLE_ERROR)
434 throw_exception (ex);
438 const unsigned solib_add_generation
439 = current_program_space->solib_add_generation;
441 /* Create the hooks to handle shared library load and unload
443 solib_create_inferior_hook (from_tty);
445 if (current_program_space->solib_add_generation == solib_add_generation)
447 /* The platform-specific hook should load initial shared libraries,
448 but didn't. FROM_TTY will be incorrectly 0 but such solib
449 targets should be fixed anyway. Call it only after the solib
450 target has been initialized by solib_create_inferior_hook. */
453 warning (_("platform-specific solib_create_inferior_hook did "
454 "not load initial shared libraries."));
456 /* If the solist is global across processes, there's no need to
458 if (!gdbarch_has_global_solist (target_gdbarch ()))
459 solib_add (NULL, 0, target, auto_solib_add);
463 /* If the user sets watchpoints before execution having started,
464 then she gets software watchpoints, because GDB can't know which
465 target will end up being pushed, or if it supports hardware
466 watchpoints or not. breakpoint_re_set takes care of promoting
467 watchpoints to hardware watchpoints if possible, however, if this
468 new inferior doesn't load shared libraries or we don't pull in
469 symbols from any other source on this target/arch,
470 breakpoint_re_set is never called. Call it now so that software
471 watchpoints get a chance to be promoted to hardware watchpoints
472 if the now pushed target supports hardware watchpoints. */
473 breakpoint_re_set ();
475 observer_notify_inferior_created (target, from_tty);
478 /* Kill the inferior if already running. This function is designed
479 to be called when we are about to start the execution of the program
480 from the beginning. Ask the user to confirm that he wants to restart
481 the program being debugged when FROM_TTY is non-null. */
484 kill_if_already_running (int from_tty)
486 if (! ptid_equal (inferior_ptid, null_ptid) && target_has_execution)
488 /* Bail out before killing the program if we will not be able to
490 target_require_runnable ();
493 && !query (_("The program being debugged has been started already.\n\
494 Start it from the beginning? ")))
495 error (_("Program not restarted."));
500 /* See inferior.h. */
503 prepare_execution_command (struct target_ops *target, int background)
505 /* If we get a request for running in the bg but the target
506 doesn't support it, error out. */
507 if (background && !target->to_can_async_p (target))
508 error (_("Asynchronous execution not supported on this target."));
510 /* If we don't get a request of running in the bg, then we need
511 to simulate synchronous (fg) execution. */
512 if (!background && target->to_can_async_p (target))
514 /* Simulate synchronous execution. Note no cleanup is necessary
515 for this. stdin is re-enabled whenever an error reaches the
517 async_disable_stdin ();
521 /* Implement the "run" command. If TBREAK_AT_MAIN is set, then insert
522 a temporary breakpoint at the begining of the main program before
523 running the program. */
526 run_command_1 (char *args, int from_tty, int tbreak_at_main)
529 struct cleanup *old_chain;
531 struct ui_out *uiout = current_uiout;
532 struct target_ops *run_target;
537 kill_if_already_running (from_tty);
539 init_wait_for_inferior ();
540 clear_breakpoint_hit_counts ();
542 /* Clean up any leftovers from other runs. Some other things from
543 this function should probably be moved into target_pre_inferior. */
544 target_pre_inferior (from_tty);
546 /* The comment here used to read, "The exec file is re-read every
547 time we do a generic_mourn_inferior, so we just have to worry
548 about the symbol file." The `generic_mourn_inferior' function
549 gets called whenever the program exits. However, suppose the
550 program exits, and *then* the executable file changes? We need
551 to check again here. Since reopen_exec_file doesn't do anything
552 if the timestamp hasn't changed, I don't see the harm. */
557 async_exec = strip_bg_char (&args);
559 /* Do validation and preparation before possibly changing anything
562 run_target = find_run_target ();
564 prepare_execution_command (run_target, async_exec);
566 if (non_stop && !run_target->to_supports_non_stop (run_target))
567 error (_("The target does not support running in non-stop mode."));
569 /* Done. Can now set breakpoints, change inferior args, etc. */
571 /* Insert the temporary breakpoint if a location was specified. */
573 tbreak_command (main_name (), 0);
575 exec_file = (char *) get_exec_file (0);
577 /* We keep symbols from add-symbol-file, on the grounds that the
578 user might want to add some symbols before running the program
579 (right?). But sometimes (dynamic loading where the user manually
580 introduces the new symbols with add-symbol-file), the code which
581 the symbols describe does not persist between runs. Currently
582 the user has to manually nuke all symbols between runs if they
583 want them to go away (PR 2207). This is probably reasonable. */
585 /* If there were other args, beside '&', process them. */
587 set_inferior_args (args);
591 ui_out_field_string (uiout, NULL, "Starting program");
592 ui_out_text (uiout, ": ");
594 ui_out_field_string (uiout, "execfile", exec_file);
595 ui_out_spaces (uiout, 1);
596 /* We call get_inferior_args() because we might need to compute
598 ui_out_field_string (uiout, "infargs", get_inferior_args ());
599 ui_out_text (uiout, "\n");
600 ui_out_flush (uiout);
603 /* We call get_inferior_args() because we might need to compute
605 run_target->to_create_inferior (run_target, exec_file, get_inferior_args (),
606 environ_vector (current_inferior ()->environment),
608 /* to_create_inferior should push the target, so after this point we
609 shouldn't refer to run_target again. */
612 /* We're starting off a new process. When we get out of here, in
613 non-stop mode, finish the state of all threads of that process,
614 but leave other threads alone, as they may be stopped in internal
615 events --- the frontend shouldn't see them as stopped. In
616 all-stop, always finish the state of all threads, as we may be
617 resuming more than just the new process. */
619 ptid = pid_to_ptid (ptid_get_pid (inferior_ptid));
621 ptid = minus_one_ptid;
622 old_chain = make_cleanup (finish_thread_state_cleanup, &ptid);
624 /* Pass zero for FROM_TTY, because at this point the "run" command
625 has done its thing; now we are setting up the running program. */
626 post_create_inferior (¤t_target, 0);
628 /* Start the target running. Do not use -1 continuation as it would skip
629 breakpoint right at the entry point. */
630 proceed (regcache_read_pc (get_current_regcache ()), GDB_SIGNAL_0, 0);
632 /* Since there was no error, there's no need to finish the thread
634 discard_cleanups (old_chain);
638 run_command (char *args, int from_tty)
640 run_command_1 (args, from_tty, 0);
644 run_no_args_command (char *args, int from_tty)
646 set_inferior_args ("");
650 /* Start the execution of the program up until the beginning of the main
654 start_command (char *args, int from_tty)
656 /* Some languages such as Ada need to search inside the program
657 minimal symbols for the location where to put the temporary
658 breakpoint before starting. */
659 if (!have_minimal_symbols ())
660 error (_("No symbol table loaded. Use the \"file\" command."));
662 /* Run the program until reaching the main procedure... */
663 run_command_1 (args, from_tty, 1);
667 proceed_thread_callback (struct thread_info *thread, void *arg)
669 /* We go through all threads individually instead of compressing
670 into a single target `resume_all' request, because some threads
671 may be stopped in internal breakpoints/events, or stopped waiting
672 for its turn in the displaced stepping queue (that is, they are
673 running && !executing). The target side has no idea about why
674 the thread is stopped, so a `resume_all' command would resume too
675 much. If/when GDB gains a way to tell the target `hold this
676 thread stopped until I say otherwise', then we can optimize
678 if (!is_stopped (thread->ptid))
681 switch_to_thread (thread->ptid);
682 clear_proceed_status ();
683 proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT, 0);
688 ensure_valid_thread (void)
690 if (ptid_equal (inferior_ptid, null_ptid)
691 || is_exited (inferior_ptid))
692 error (_("Cannot execute this command without a live selected thread."));
695 /* If the user is looking at trace frames, any resumption of execution
696 is likely to mix up recorded and live target data. So simply
697 disallow those commands. */
700 ensure_not_tfind_mode (void)
702 if (get_traceframe_number () >= 0)
703 error (_("Cannot execute this command while looking at trace frames."));
706 /* Throw an error indicating the current thread is running. */
709 error_is_running (void)
711 error (_("Cannot execute this command while "
712 "the selected thread is running."));
715 /* Calls error_is_running if the current thread is running. */
718 ensure_not_running (void)
720 if (is_running (inferior_ptid))
725 continue_1 (int all_threads)
728 ensure_not_tfind_mode ();
730 if (non_stop && all_threads)
732 /* Don't error out if the current thread is running, because
733 there may be other stopped threads. */
734 struct cleanup *old_chain;
736 /* Backup current thread and selected frame. */
737 old_chain = make_cleanup_restore_current_thread ();
739 iterate_over_threads (proceed_thread_callback, NULL);
741 /* Restore selected ptid. */
742 do_cleanups (old_chain);
746 ensure_valid_thread ();
747 ensure_not_running ();
748 clear_proceed_status ();
749 proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT, 0);
753 /* continue [-a] [proceed-count] [&] */
756 continue_command (char *args, int from_tty)
762 /* Find out whether we must run in the background. */
764 async_exec = strip_bg_char (&args);
766 prepare_execution_command (¤t_target, async_exec);
770 if (strncmp (args, "-a", sizeof ("-a") - 1) == 0)
773 args += sizeof ("-a") - 1;
779 if (!non_stop && all_threads)
780 error (_("`-a' is meaningless in all-stop mode."));
782 if (args != NULL && all_threads)
783 error (_("Can't resume all threads and specify "
784 "proceed count simultaneously."));
786 /* If we have an argument left, set proceed count of breakpoint we
793 struct thread_info *tp;
796 tp = find_thread_ptid (inferior_ptid);
800 struct target_waitstatus ws;
802 get_last_target_status (&last_ptid, &ws);
803 tp = find_thread_ptid (last_ptid);
806 bs = tp->control.stop_bpstat;
808 while ((stat = bpstat_num (&bs, &num)) != 0)
811 set_ignore_count (num,
812 parse_and_eval_long (args) - 1,
814 /* set_ignore_count prints a message ending with a period.
815 So print two spaces before "Continuing.". */
817 printf_filtered (" ");
821 if (!stopped && from_tty)
824 ("Not stopped at any breakpoint; argument ignored.\n");
829 printf_filtered (_("Continuing.\n"));
831 continue_1 (all_threads);
834 /* Record the starting point of a "step" or "next" command. */
837 set_step_frame (void)
839 struct symtab_and_line sal;
841 find_frame_sal (get_current_frame (), &sal);
842 set_step_info (get_current_frame (), sal);
845 /* Step until outside of current statement. */
848 step_command (char *count_string, int from_tty)
850 step_1 (0, 0, count_string);
853 /* Likewise, but skip over subroutine calls as if single instructions. */
856 next_command (char *count_string, int from_tty)
858 step_1 (1, 0, count_string);
861 /* Likewise, but step only one instruction. */
864 stepi_command (char *count_string, int from_tty)
866 step_1 (0, 1, count_string);
870 nexti_command (char *count_string, int from_tty)
872 step_1 (1, 1, count_string);
876 delete_longjmp_breakpoint_cleanup (void *arg)
878 int thread = * (int *) arg;
879 delete_longjmp_breakpoint (thread);
883 step_1 (int skip_subroutines, int single_inst, char *count_string)
886 struct cleanup *cleanups = make_cleanup (null_cleanup, NULL);
891 ensure_not_tfind_mode ();
892 ensure_valid_thread ();
893 ensure_not_running ();
896 async_exec = strip_bg_char (&count_string);
898 prepare_execution_command (¤t_target, async_exec);
900 count = count_string ? parse_and_eval_long (count_string) : 1;
902 if (!single_inst || skip_subroutines) /* Leave si command alone. */
904 struct thread_info *tp = inferior_thread ();
906 if (in_thread_list (inferior_ptid))
907 thread = pid_to_thread_id (inferior_ptid);
909 set_longjmp_breakpoint (tp, get_frame_id (get_current_frame ()));
911 make_cleanup (delete_longjmp_breakpoint_cleanup, &thread);
914 /* In synchronous case, all is well; each step_once call will step once. */
915 if (!target_can_async_p ())
917 for (; count > 0; count--)
919 step_once (skip_subroutines, single_inst, count, thread);
921 if (!target_has_execution)
925 struct thread_info *tp = inferior_thread ();
927 if (!tp->control.stop_step || !tp->step_multi)
929 /* If we stopped for some reason that is not stepping
930 there are no further steps to make. */
937 do_cleanups (cleanups);
941 /* In the case of an asynchronous target things get complicated;
942 do only one step for now, before returning control to the
943 event loop. Let the continuation figure out how many other
944 steps we need to do, and handle them one at the time, through
946 step_once (skip_subroutines, single_inst, count, thread);
948 /* We are running, and the continuation is installed. It will
949 disable the longjmp breakpoint as appropriate. */
950 discard_cleanups (cleanups);
954 struct step_1_continuation_args
957 int skip_subroutines;
962 /* Called after we are done with one step operation, to check whether
963 we need to step again, before we print the prompt and return control
964 to the user. If count is > 1, we will need to do one more call to
965 proceed(), via step_once(). Basically it is like step_once and
966 step_1_continuation are co-recursive. */
969 step_1_continuation (void *args, int err)
971 struct step_1_continuation_args *a = args;
973 if (target_has_execution)
975 struct thread_info *tp;
977 tp = inferior_thread ();
979 && tp->step_multi && tp->control.stop_step)
981 /* There are more steps to make, and we did stop due to
982 ending a stepping range. Do another step. */
983 step_once (a->skip_subroutines, a->single_inst,
984 a->count - 1, a->thread);
990 /* We either hit an error, or stopped for some reason that is
991 not stepping, or there are no further steps to make.
993 if (!a->single_inst || a->skip_subroutines)
994 delete_longjmp_breakpoint (a->thread);
997 /* Do just one step operation. This is useful to implement the 'step
998 n' kind of commands. In case of asynchronous targets, we will have
999 to set up a continuation to be done after the target stops (after
1000 this one step). For synch targets, the caller handles further
1004 step_once (int skip_subroutines, int single_inst, int count, int thread)
1006 struct frame_info *frame = get_current_frame ();
1010 /* Don't assume THREAD is a valid thread id. It is set to -1 if
1011 the longjmp breakpoint was not required. Use the
1012 INFERIOR_PTID thread instead, which is the same thread when
1014 struct thread_info *tp = inferior_thread ();
1016 clear_proceed_status ();
1023 /* Step at an inlined function behaves like "down". */
1024 if (!skip_subroutines
1025 && inline_skipped_frames (inferior_ptid))
1029 /* Pretend that we've ran. */
1030 resume_ptid = user_visible_resume_ptid (1);
1031 set_running (resume_ptid, 1);
1033 step_into_inline_frame (inferior_ptid);
1035 step_once (skip_subroutines, single_inst, count - 1, thread);
1038 /* Pretend that we've stopped. */
1041 if (target_can_async_p ())
1042 inferior_event_handler (INF_EXEC_COMPLETE, NULL);
1047 pc = get_frame_pc (frame);
1048 find_pc_line_pc_range (pc,
1049 &tp->control.step_range_start,
1050 &tp->control.step_range_end);
1052 tp->control.may_range_step = 1;
1054 /* If we have no line info, switch to stepi mode. */
1055 if (tp->control.step_range_end == 0 && step_stop_if_no_debug)
1057 tp->control.step_range_start = tp->control.step_range_end = 1;
1058 tp->control.may_range_step = 0;
1060 else if (tp->control.step_range_end == 0)
1064 if (find_pc_partial_function (pc, &name,
1065 &tp->control.step_range_start,
1066 &tp->control.step_range_end) == 0)
1067 error (_("Cannot find bounds of current function"));
1069 target_terminal_ours ();
1070 printf_filtered (_("Single stepping until exit from function %s,"
1071 "\nwhich has no line number information.\n"),
1077 /* Say we are stepping, but stop after one insn whatever it does. */
1078 tp->control.step_range_start = tp->control.step_range_end = 1;
1079 if (!skip_subroutines)
1081 Don't step over function calls, not even to functions lacking
1083 tp->control.step_over_calls = STEP_OVER_NONE;
1086 if (skip_subroutines)
1087 tp->control.step_over_calls = STEP_OVER_ALL;
1089 tp->step_multi = (count > 1);
1090 proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT, 1);
1092 /* For async targets, register a continuation to do any
1093 additional steps. For sync targets, the caller will handle
1094 further stepping. */
1095 if (target_can_async_p ())
1097 struct step_1_continuation_args *args;
1099 args = xmalloc (sizeof (*args));
1100 args->skip_subroutines = skip_subroutines;
1101 args->single_inst = single_inst;
1102 args->count = count;
1103 args->thread = thread;
1105 add_intermediate_continuation (tp, step_1_continuation, args, xfree);
1111 /* Continue program at specified address. */
1114 jump_command (char *arg, int from_tty)
1116 struct gdbarch *gdbarch = get_current_arch ();
1118 struct symtabs_and_lines sals;
1119 struct symtab_and_line sal;
1125 ensure_not_tfind_mode ();
1126 ensure_valid_thread ();
1127 ensure_not_running ();
1129 /* Find out whether we must run in the background. */
1131 async_exec = strip_bg_char (&arg);
1133 prepare_execution_command (¤t_target, async_exec);
1136 error_no_arg (_("starting address"));
1138 sals = decode_line_with_last_displayed (arg, DECODE_LINE_FUNFIRSTLINE);
1139 if (sals.nelts != 1)
1141 error (_("Unreasonable jump request"));
1147 if (sal.symtab == 0 && sal.pc == 0)
1148 error (_("No source file has been specified."));
1150 resolve_sal_pc (&sal); /* May error out. */
1152 /* See if we are trying to jump to another function. */
1153 fn = get_frame_function (get_current_frame ());
1154 sfn = find_pc_function (sal.pc);
1155 if (fn != NULL && sfn != fn)
1157 if (!query (_("Line %d is not in `%s'. Jump anyway? "), sal.line,
1158 SYMBOL_PRINT_NAME (fn)))
1160 error (_("Not confirmed."));
1167 fixup_symbol_section (sfn, 0);
1168 if (section_is_overlay (SYMBOL_OBJ_SECTION (SYMBOL_OBJFILE (sfn), sfn)) &&
1169 !section_is_mapped (SYMBOL_OBJ_SECTION (SYMBOL_OBJFILE (sfn), sfn)))
1171 if (!query (_("WARNING!!! Destination is in "
1172 "unmapped overlay! Jump anyway? ")))
1174 error (_("Not confirmed."));
1184 printf_filtered (_("Continuing at "));
1185 fputs_filtered (paddress (gdbarch, addr), gdb_stdout);
1186 printf_filtered (".\n");
1189 clear_proceed_status ();
1190 proceed (addr, GDB_SIGNAL_0, 0);
1194 /* Go to line or address in current procedure. */
1197 go_command (char *line_no, int from_tty)
1199 if (line_no == (char *) NULL || !*line_no)
1200 printf_filtered (_("Usage: go <location>\n"));
1203 tbreak_command (line_no, from_tty);
1204 jump_command (line_no, from_tty);
1209 /* Continue program giving it specified signal. */
1212 signal_command (char *signum_exp, int from_tty)
1214 enum gdb_signal oursig;
1217 dont_repeat (); /* Too dangerous. */
1219 ensure_not_tfind_mode ();
1220 ensure_valid_thread ();
1221 ensure_not_running ();
1223 /* Find out whether we must run in the background. */
1224 if (signum_exp != NULL)
1225 async_exec = strip_bg_char (&signum_exp);
1227 prepare_execution_command (¤t_target, async_exec);
1230 error_no_arg (_("signal number"));
1232 /* It would be even slicker to make signal names be valid expressions,
1233 (the type could be "enum $signal" or some such), then the user could
1234 assign them to convenience variables. */
1235 oursig = gdb_signal_from_name (signum_exp);
1237 if (oursig == GDB_SIGNAL_UNKNOWN)
1239 /* No, try numeric. */
1240 int num = parse_and_eval_long (signum_exp);
1243 oursig = GDB_SIGNAL_0;
1245 oursig = gdb_signal_from_command (num);
1250 if (oursig == GDB_SIGNAL_0)
1251 printf_filtered (_("Continuing with no signal.\n"));
1253 printf_filtered (_("Continuing with signal %s.\n"),
1254 gdb_signal_to_name (oursig));
1257 clear_proceed_status ();
1258 proceed ((CORE_ADDR) -1, oursig, 0);
1261 /* Continuation args to be passed to the "until" command
1263 struct until_next_continuation_args
1265 /* The thread that was current when the command was executed. */
1269 /* A continuation callback for until_next_command. */
1272 until_next_continuation (void *arg, int err)
1274 struct until_next_continuation_args *a = arg;
1276 delete_longjmp_breakpoint (a->thread);
1279 /* Proceed until we reach a different source line with pc greater than
1280 our current one or exit the function. We skip calls in both cases.
1282 Note that eventually this command should probably be changed so
1283 that only source lines are printed out when we hit the breakpoint
1284 we set. This may involve changes to wait_for_inferior and the
1285 proceed status code. */
1288 until_next_command (int from_tty)
1290 struct frame_info *frame;
1292 struct symbol *func;
1293 struct symtab_and_line sal;
1294 struct thread_info *tp = inferior_thread ();
1295 int thread = tp->num;
1296 struct cleanup *old_chain;
1298 clear_proceed_status ();
1301 frame = get_current_frame ();
1303 /* Step until either exited from this function or greater
1304 than the current line (if in symbolic section) or pc (if
1307 pc = get_frame_pc (frame);
1308 func = find_pc_function (pc);
1312 struct bound_minimal_symbol msymbol = lookup_minimal_symbol_by_pc (pc);
1314 if (msymbol.minsym == NULL)
1315 error (_("Execution is not within a known function."));
1317 tp->control.step_range_start = BMSYMBOL_VALUE_ADDRESS (msymbol);
1318 tp->control.step_range_end = pc;
1322 sal = find_pc_line (pc, 0);
1324 tp->control.step_range_start = BLOCK_START (SYMBOL_BLOCK_VALUE (func));
1325 tp->control.step_range_end = sal.end;
1327 tp->control.may_range_step = 1;
1329 tp->control.step_over_calls = STEP_OVER_ALL;
1331 tp->step_multi = 0; /* Only one call to proceed */
1333 set_longjmp_breakpoint (tp, get_frame_id (frame));
1334 old_chain = make_cleanup (delete_longjmp_breakpoint_cleanup, &thread);
1336 proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT, 1);
1338 if (target_can_async_p () && is_running (inferior_ptid))
1340 struct until_next_continuation_args *cont_args;
1342 discard_cleanups (old_chain);
1343 cont_args = XNEW (struct until_next_continuation_args);
1344 cont_args->thread = inferior_thread ()->num;
1346 add_continuation (tp, until_next_continuation, cont_args, xfree);
1349 do_cleanups (old_chain);
1353 until_command (char *arg, int from_tty)
1358 ensure_not_tfind_mode ();
1359 ensure_valid_thread ();
1360 ensure_not_running ();
1362 /* Find out whether we must run in the background. */
1364 async_exec = strip_bg_char (&arg);
1366 prepare_execution_command (¤t_target, async_exec);
1369 until_break_command (arg, from_tty, 0);
1371 until_next_command (from_tty);
1375 advance_command (char *arg, int from_tty)
1380 ensure_not_tfind_mode ();
1381 ensure_valid_thread ();
1382 ensure_not_running ();
1385 error_no_arg (_("a location"));
1387 /* Find out whether we must run in the background. */
1389 async_exec = strip_bg_char (&arg);
1391 prepare_execution_command (¤t_target, async_exec);
1393 until_break_command (arg, from_tty, 1);
1396 /* Return the value of the result of a function at the end of a 'finish'
1400 get_return_value (struct value *function, struct type *value_type)
1402 struct regcache *stop_regs = stop_registers;
1403 struct gdbarch *gdbarch;
1404 struct value *value;
1405 struct cleanup *cleanup = make_cleanup (null_cleanup, NULL);
1407 /* If stop_registers were not saved, use the current registers. */
1410 stop_regs = regcache_dup (get_current_regcache ());
1411 make_cleanup_regcache_xfree (stop_regs);
1414 gdbarch = get_regcache_arch (stop_regs);
1416 CHECK_TYPEDEF (value_type);
1417 gdb_assert (TYPE_CODE (value_type) != TYPE_CODE_VOID);
1419 /* FIXME: 2003-09-27: When returning from a nested inferior function
1420 call, it's possible (with no help from the architecture vector)
1421 to locate and return/print a "struct return" value. This is just
1422 a more complicated case of what is already being done in the
1423 inferior function call code. In fact, when inferior function
1424 calls are made async, this will likely be made the norm. */
1426 switch (gdbarch_return_value (gdbarch, function, value_type,
1429 case RETURN_VALUE_REGISTER_CONVENTION:
1430 case RETURN_VALUE_ABI_RETURNS_ADDRESS:
1431 case RETURN_VALUE_ABI_PRESERVES_ADDRESS:
1432 value = allocate_value (value_type);
1433 gdbarch_return_value (gdbarch, function, value_type, stop_regs,
1434 value_contents_raw (value), NULL);
1436 case RETURN_VALUE_STRUCT_CONVENTION:
1440 internal_error (__FILE__, __LINE__, _("bad switch"));
1443 do_cleanups (cleanup);
1448 /* Print the result of a function at the end of a 'finish' command. */
1451 print_return_value (struct value *function, struct type *value_type)
1453 struct value *value = get_return_value (function, value_type);
1454 struct ui_out *uiout = current_uiout;
1458 struct value_print_options opts;
1459 struct ui_file *stb;
1460 struct cleanup *old_chain;
1463 stb = mem_fileopen ();
1464 old_chain = make_cleanup_ui_file_delete (stb);
1465 ui_out_text (uiout, "Value returned is ");
1466 ui_out_field_fmt (uiout, "gdb-result-var", "$%d",
1467 record_latest_value (value));
1468 ui_out_text (uiout, " = ");
1469 get_no_prettyformat_print_options (&opts);
1470 value_print (value, stb, &opts);
1471 ui_out_field_stream (uiout, "return-value", stb);
1472 ui_out_text (uiout, "\n");
1473 do_cleanups (old_chain);
1477 ui_out_text (uiout, "Value returned has type: ");
1478 ui_out_field_string (uiout, "return-type", TYPE_NAME (value_type));
1479 ui_out_text (uiout, ".");
1480 ui_out_text (uiout, " Cannot determine contents\n");
1484 /* Stuff that needs to be done by the finish command after the target
1485 has stopped. In asynchronous mode, we wait for the target to stop
1486 in the call to poll or select in the event loop, so it is
1487 impossible to do all the stuff as part of the finish_command
1488 function itself. The only chance we have to complete this command
1489 is in fetch_inferior_event, which is called by the event loop as
1490 soon as it detects that the target has stopped. */
1492 struct finish_command_continuation_args
1494 /* The thread that as current when the command was executed. */
1496 struct breakpoint *breakpoint;
1497 struct symbol *function;
1501 finish_command_continuation (void *arg, int err)
1503 struct finish_command_continuation_args *a = arg;
1507 struct thread_info *tp = NULL;
1510 if (!ptid_equal (inferior_ptid, null_ptid)
1511 && target_has_execution
1512 && is_stopped (inferior_ptid))
1514 tp = inferior_thread ();
1515 bs = tp->control.stop_bpstat;
1518 if (bpstat_find_breakpoint (bs, a->breakpoint) != NULL
1519 && a->function != NULL)
1521 struct type *value_type;
1523 value_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (a->function));
1525 internal_error (__FILE__, __LINE__,
1526 _("finish_command: function has no target type"));
1528 if (TYPE_CODE (value_type) != TYPE_CODE_VOID)
1530 volatile struct gdb_exception ex;
1533 func = read_var_value (a->function, get_current_frame ());
1534 TRY_CATCH (ex, RETURN_MASK_ALL)
1536 /* print_return_value can throw an exception in some
1537 circumstances. We need to catch this so that we still
1538 delete the breakpoint. */
1539 print_return_value (func, value_type);
1542 exception_print (gdb_stdout, ex);
1546 /* We suppress normal call of normal_stop observer and do it
1547 here so that the *stopped notification includes the return
1549 if (bs != NULL && tp->control.proceed_to_finish)
1550 observer_notify_normal_stop (bs, 1 /* print frame */);
1553 delete_breakpoint (a->breakpoint);
1554 delete_longjmp_breakpoint (a->thread);
1558 finish_command_continuation_free_arg (void *arg)
1563 /* finish_backward -- helper function for finish_command. */
1566 finish_backward (struct symbol *function)
1568 struct symtab_and_line sal;
1569 struct thread_info *tp = inferior_thread ();
1571 CORE_ADDR func_addr;
1573 pc = get_frame_pc (get_current_frame ());
1575 if (find_pc_partial_function (pc, NULL, &func_addr, NULL) == 0)
1576 error (_("Cannot find bounds of current function"));
1578 sal = find_pc_line (func_addr, 0);
1580 tp->control.proceed_to_finish = 1;
1581 /* Special case: if we're sitting at the function entry point,
1582 then all we need to do is take a reverse singlestep. We
1583 don't need to set a breakpoint, and indeed it would do us
1586 Note that this can only happen at frame #0, since there's
1587 no way that a function up the stack can have a return address
1588 that's equal to its entry point. */
1592 struct frame_info *frame = get_selected_frame (NULL);
1593 struct gdbarch *gdbarch = get_frame_arch (frame);
1594 struct symtab_and_line sr_sal;
1596 /* Set a step-resume at the function's entry point. Once that's
1597 hit, we'll do one more step backwards. */
1600 sr_sal.pspace = get_frame_program_space (frame);
1601 insert_step_resume_breakpoint_at_sal (gdbarch,
1602 sr_sal, null_frame_id);
1604 proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT, 0);
1608 /* We're almost there -- we just need to back up by one more
1610 tp->control.step_range_start = tp->control.step_range_end = 1;
1611 proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT, 1);
1615 /* finish_forward -- helper function for finish_command. */
1618 finish_forward (struct symbol *function, struct frame_info *frame)
1620 struct frame_id frame_id = get_frame_id (frame);
1621 struct gdbarch *gdbarch = get_frame_arch (frame);
1622 struct symtab_and_line sal;
1623 struct thread_info *tp = inferior_thread ();
1624 struct breakpoint *breakpoint;
1625 struct cleanup *old_chain;
1626 struct finish_command_continuation_args *cargs;
1627 int thread = tp->num;
1629 sal = find_pc_line (get_frame_pc (frame), 0);
1630 sal.pc = get_frame_pc (frame);
1632 breakpoint = set_momentary_breakpoint (gdbarch, sal,
1633 get_stack_frame_id (frame),
1636 /* set_momentary_breakpoint invalidates FRAME. */
1639 old_chain = make_cleanup_delete_breakpoint (breakpoint);
1641 set_longjmp_breakpoint (tp, frame_id);
1642 make_cleanup (delete_longjmp_breakpoint_cleanup, &thread);
1644 /* We want stop_registers, please... */
1645 tp->control.proceed_to_finish = 1;
1646 cargs = xmalloc (sizeof (*cargs));
1648 cargs->thread = thread;
1649 cargs->breakpoint = breakpoint;
1650 cargs->function = function;
1651 add_continuation (tp, finish_command_continuation, cargs,
1652 finish_command_continuation_free_arg);
1653 proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT, 0);
1655 discard_cleanups (old_chain);
1656 if (!target_can_async_p ())
1657 do_all_continuations (0);
1660 /* "finish": Set a temporary breakpoint at the place the selected
1661 frame will return to, then continue. */
1664 finish_command (char *arg, int from_tty)
1666 struct frame_info *frame;
1667 struct symbol *function;
1672 ensure_not_tfind_mode ();
1673 ensure_valid_thread ();
1674 ensure_not_running ();
1676 /* Find out whether we must run in the background. */
1678 async_exec = strip_bg_char (&arg);
1680 prepare_execution_command (¤t_target, async_exec);
1683 error (_("The \"finish\" command does not take any arguments."));
1685 frame = get_prev_frame (get_selected_frame (_("No selected frame.")));
1687 error (_("\"finish\" not meaningful in the outermost frame."));
1689 clear_proceed_status ();
1691 /* Finishing from an inline frame is completely different. We don't
1692 try to show the "return value" - no way to locate it. So we do
1693 not need a completion. */
1694 if (get_frame_type (get_selected_frame (_("No selected frame.")))
1697 /* Claim we are stepping in the calling frame. An empty step
1698 range means that we will stop once we aren't in a function
1699 called by that frame. We don't use the magic "1" value for
1700 step_range_end, because then infrun will think this is nexti,
1701 and not step over the rest of this inlined function call. */
1702 struct thread_info *tp = inferior_thread ();
1703 struct symtab_and_line empty_sal;
1705 init_sal (&empty_sal);
1706 set_step_info (frame, empty_sal);
1707 tp->control.step_range_start = get_frame_pc (frame);
1708 tp->control.step_range_end = tp->control.step_range_start;
1709 tp->control.step_over_calls = STEP_OVER_ALL;
1711 /* Print info on the selected frame, including level number but not
1715 printf_filtered (_("Run till exit from "));
1716 print_stack_frame (get_selected_frame (NULL), 1, LOCATION, 0);
1719 proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT, 1);
1723 /* Ignore TAILCALL_FRAME type frames, they were executed already before
1724 entering THISFRAME. */
1725 while (get_frame_type (frame) == TAILCALL_FRAME)
1726 frame = get_prev_frame (frame);
1728 /* Find the function we will return from. */
1730 function = find_pc_function (get_frame_pc (get_selected_frame (NULL)));
1732 /* Print info on the selected frame, including level number but not
1736 if (execution_direction == EXEC_REVERSE)
1737 printf_filtered (_("Run back to call of "));
1739 printf_filtered (_("Run till exit from "));
1741 print_stack_frame (get_selected_frame (NULL), 1, LOCATION, 0);
1744 if (execution_direction == EXEC_REVERSE)
1745 finish_backward (function);
1747 finish_forward (function, frame);
1752 program_info (char *args, int from_tty)
1756 struct thread_info *tp;
1759 if (!target_has_execution)
1761 printf_filtered (_("The program being debugged is not being run.\n"));
1766 ptid = inferior_ptid;
1769 struct target_waitstatus ws;
1771 get_last_target_status (&ptid, &ws);
1774 if (ptid_equal (ptid, null_ptid) || is_exited (ptid))
1775 error (_("Invalid selected thread."));
1776 else if (is_running (ptid))
1777 error (_("Selected thread is running."));
1779 tp = find_thread_ptid (ptid);
1780 bs = tp->control.stop_bpstat;
1781 stat = bpstat_num (&bs, &num);
1783 target_files_info ();
1784 printf_filtered (_("Program stopped at %s.\n"),
1785 paddress (target_gdbarch (), stop_pc));
1786 if (tp->control.stop_step)
1787 printf_filtered (_("It stopped after being stepped.\n"));
1790 /* There may be several breakpoints in the same place, so this
1791 isn't as strange as it seems. */
1796 printf_filtered (_("It stopped at a breakpoint "
1797 "that has since been deleted.\n"));
1800 printf_filtered (_("It stopped at breakpoint %d.\n"), num);
1801 stat = bpstat_num (&bs, &num);
1804 else if (tp->suspend.stop_signal != GDB_SIGNAL_0)
1806 printf_filtered (_("It stopped with signal %s, %s.\n"),
1807 gdb_signal_to_name (tp->suspend.stop_signal),
1808 gdb_signal_to_string (tp->suspend.stop_signal));
1813 printf_filtered (_("Type \"info stack\" or \"info "
1814 "registers\" for more information.\n"));
1819 environment_info (char *var, int from_tty)
1823 char *val = get_in_environ (current_inferior ()->environment, var);
1827 puts_filtered (var);
1828 puts_filtered (" = ");
1829 puts_filtered (val);
1830 puts_filtered ("\n");
1834 puts_filtered ("Environment variable \"");
1835 puts_filtered (var);
1836 puts_filtered ("\" not defined.\n");
1841 char **vector = environ_vector (current_inferior ()->environment);
1845 puts_filtered (*vector++);
1846 puts_filtered ("\n");
1852 set_environment_command (char *arg, int from_tty)
1854 char *p, *val, *var;
1858 error_no_arg (_("environment variable and value"));
1860 /* Find seperation between variable name and value. */
1861 p = (char *) strchr (arg, '=');
1862 val = (char *) strchr (arg, ' ');
1864 if (p != 0 && val != 0)
1866 /* We have both a space and an equals. If the space is before the
1867 equals, walk forward over the spaces til we see a nonspace
1868 (possibly the equals). */
1873 /* Now if the = is after the char following the spaces,
1874 take the char following the spaces. */
1878 else if (val != 0 && p == 0)
1882 error_no_arg (_("environment variable to set"));
1884 if (p == 0 || p[1] == 0)
1888 p = arg + strlen (arg); /* So that savestring below will work. */
1892 /* Not setting variable value to null. */
1894 while (*val == ' ' || *val == '\t')
1898 while (p != arg && (p[-1] == ' ' || p[-1] == '\t'))
1901 var = savestring (arg, p - arg);
1904 printf_filtered (_("Setting environment variable "
1905 "\"%s\" to null value.\n"),
1907 set_in_environ (current_inferior ()->environment, var, "");
1910 set_in_environ (current_inferior ()->environment, var, val);
1915 unset_environment_command (char *var, int from_tty)
1919 /* If there is no argument, delete all environment variables.
1920 Ask for confirmation if reading from the terminal. */
1921 if (!from_tty || query (_("Delete all environment variables? ")))
1923 free_environ (current_inferior ()->environment);
1924 current_inferior ()->environment = make_environ ();
1928 unset_in_environ (current_inferior ()->environment, var);
1931 /* Handle the execution path (PATH variable). */
1933 static const char path_var_name[] = "PATH";
1936 path_info (char *args, int from_tty)
1938 puts_filtered ("Executable and object file path: ");
1939 puts_filtered (get_in_environ (current_inferior ()->environment,
1941 puts_filtered ("\n");
1944 /* Add zero or more directories to the front of the execution path. */
1947 path_command (char *dirname, int from_tty)
1953 env = get_in_environ (current_inferior ()->environment, path_var_name);
1954 /* Can be null if path is not set. */
1957 exec_path = xstrdup (env);
1958 mod_path (dirname, &exec_path);
1959 set_in_environ (current_inferior ()->environment, path_var_name, exec_path);
1962 path_info ((char *) NULL, from_tty);
1966 /* Print out the register NAME with value VAL, to FILE, in the default
1970 default_print_one_register_info (struct ui_file *file,
1974 struct type *regtype = value_type (val);
1975 int print_raw_format;
1977 fputs_filtered (name, file);
1978 print_spaces_filtered (15 - strlen (name), file);
1980 print_raw_format = (value_entirely_available (val)
1981 && !value_optimized_out (val));
1983 /* If virtual format is floating, print it that way, and in raw
1985 if (TYPE_CODE (regtype) == TYPE_CODE_FLT
1986 || TYPE_CODE (regtype) == TYPE_CODE_DECFLOAT)
1989 struct value_print_options opts;
1990 const gdb_byte *valaddr = value_contents_for_printing (val);
1991 enum bfd_endian byte_order = gdbarch_byte_order (get_type_arch (regtype));
1993 get_user_print_options (&opts);
1997 value_contents_for_printing (val),
1998 value_embedded_offset (val), 0,
1999 file, 0, val, &opts, current_language);
2001 if (print_raw_format)
2003 fprintf_filtered (file, "\t(raw ");
2004 print_hex_chars (file, valaddr, TYPE_LENGTH (regtype), byte_order);
2005 fprintf_filtered (file, ")");
2010 struct value_print_options opts;
2012 /* Print the register in hex. */
2013 get_formatted_print_options (&opts, 'x');
2016 value_contents_for_printing (val),
2017 value_embedded_offset (val), 0,
2018 file, 0, val, &opts, current_language);
2019 /* If not a vector register, print it also according to its
2021 if (print_raw_format && TYPE_VECTOR (regtype) == 0)
2023 get_user_print_options (&opts);
2025 fprintf_filtered (file, "\t");
2027 value_contents_for_printing (val),
2028 value_embedded_offset (val), 0,
2029 file, 0, val, &opts, current_language);
2033 fprintf_filtered (file, "\n");
2036 /* Print out the machine register regnum. If regnum is -1, print all
2037 registers (print_all == 1) or all non-float and non-vector
2038 registers (print_all == 0).
2040 For most machines, having all_registers_info() print the
2041 register(s) one per line is good enough. If a different format is
2042 required, (eg, for MIPS or Pyramid 90x, which both have lots of
2043 regs), or there is an existing convention for showing all the
2044 registers, define the architecture method PRINT_REGISTERS_INFO to
2045 provide that format. */
2048 default_print_registers_info (struct gdbarch *gdbarch,
2049 struct ui_file *file,
2050 struct frame_info *frame,
2051 int regnum, int print_all)
2054 const int numregs = gdbarch_num_regs (gdbarch)
2055 + gdbarch_num_pseudo_regs (gdbarch);
2057 for (i = 0; i < numregs; i++)
2059 /* Decide between printing all regs, non-float / vector regs, or
2065 if (!gdbarch_register_reggroup_p (gdbarch, i, all_reggroup))
2070 if (!gdbarch_register_reggroup_p (gdbarch, i, general_reggroup))
2080 /* If the register name is empty, it is undefined for this
2081 processor, so don't display anything. */
2082 if (gdbarch_register_name (gdbarch, i) == NULL
2083 || *(gdbarch_register_name (gdbarch, i)) == '\0')
2086 default_print_one_register_info (file,
2087 gdbarch_register_name (gdbarch, i),
2088 value_of_register (i, frame));
2093 registers_info (char *addr_exp, int fpregs)
2095 struct frame_info *frame;
2096 struct gdbarch *gdbarch;
2098 if (!target_has_registers)
2099 error (_("The program has no registers now."));
2100 frame = get_selected_frame (NULL);
2101 gdbarch = get_frame_arch (frame);
2105 gdbarch_print_registers_info (gdbarch, gdb_stdout,
2110 while (*addr_exp != '\0')
2115 /* Skip leading white space. */
2116 addr_exp = skip_spaces (addr_exp);
2118 /* Discard any leading ``$''. Check that there is something
2119 resembling a register following it. */
2120 if (addr_exp[0] == '$')
2122 if (isspace ((*addr_exp)) || (*addr_exp) == '\0')
2123 error (_("Missing register name"));
2125 /* Find the start/end of this register name/num/group. */
2127 while ((*addr_exp) != '\0' && !isspace ((*addr_exp)))
2131 /* Figure out what we've found and display it. */
2133 /* A register name? */
2135 int regnum = user_reg_map_name_to_regnum (gdbarch, start, end - start);
2139 /* User registers lie completely outside of the range of
2140 normal registers. Catch them early so that the target
2142 if (regnum >= gdbarch_num_regs (gdbarch)
2143 + gdbarch_num_pseudo_regs (gdbarch))
2145 struct value *regval = value_of_user_reg (regnum, frame);
2146 const char *regname = user_reg_map_regnum_to_name (gdbarch,
2149 /* Print in the same fashion
2150 gdbarch_print_registers_info's default
2151 implementation prints. */
2152 default_print_one_register_info (gdb_stdout,
2157 gdbarch_print_registers_info (gdbarch, gdb_stdout,
2158 frame, regnum, fpregs);
2163 /* A register group? */
2165 struct reggroup *group;
2167 for (group = reggroup_next (gdbarch, NULL);
2169 group = reggroup_next (gdbarch, group))
2171 /* Don't bother with a length check. Should the user
2172 enter a short register group name, go with the first
2173 group that matches. */
2174 if (strncmp (start, reggroup_name (group), end - start) == 0)
2182 regnum < gdbarch_num_regs (gdbarch)
2183 + gdbarch_num_pseudo_regs (gdbarch);
2186 if (gdbarch_register_reggroup_p (gdbarch, regnum, group))
2187 gdbarch_print_registers_info (gdbarch,
2195 /* Nothing matched. */
2196 error (_("Invalid register `%.*s'"), (int) (end - start), start);
2201 all_registers_info (char *addr_exp, int from_tty)
2203 registers_info (addr_exp, 1);
2207 nofp_registers_info (char *addr_exp, int from_tty)
2209 registers_info (addr_exp, 0);
2213 print_vector_info (struct ui_file *file,
2214 struct frame_info *frame, const char *args)
2216 struct gdbarch *gdbarch = get_frame_arch (frame);
2218 if (gdbarch_print_vector_info_p (gdbarch))
2219 gdbarch_print_vector_info (gdbarch, file, frame, args);
2223 int printed_something = 0;
2226 regnum < gdbarch_num_regs (gdbarch)
2227 + gdbarch_num_pseudo_regs (gdbarch);
2230 if (gdbarch_register_reggroup_p (gdbarch, regnum, vector_reggroup))
2232 printed_something = 1;
2233 gdbarch_print_registers_info (gdbarch, file, frame, regnum, 1);
2236 if (!printed_something)
2237 fprintf_filtered (file, "No vector information\n");
2242 vector_info (char *args, int from_tty)
2244 if (!target_has_registers)
2245 error (_("The program has no registers now."));
2247 print_vector_info (gdb_stdout, get_selected_frame (NULL), args);
2250 /* Kill the inferior process. Make us have no inferior. */
2253 kill_command (char *arg, int from_tty)
2255 /* FIXME: This should not really be inferior_ptid (or target_has_execution).
2256 It should be a distinct flag that indicates that a target is active, cuz
2257 some targets don't have processes! */
2259 if (ptid_equal (inferior_ptid, null_ptid))
2260 error (_("The program is not being run."));
2261 if (!query (_("Kill the program being debugged? ")))
2262 error (_("Not confirmed."));
2265 /* If we still have other inferiors to debug, then don't mess with
2266 with their threads. */
2267 if (!have_inferiors ())
2269 init_thread_list (); /* Destroy thread info. */
2271 /* Killing off the inferior can leave us with a core file. If
2272 so, print the state we are left in. */
2273 if (target_has_stack)
2275 printf_filtered (_("In %s,\n"), target_longname);
2276 print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1);
2279 bfd_cache_close_all ();
2282 /* Used in `attach&' command. ARG is a point to an integer
2283 representing a process id. Proceed threads of this process iff
2284 they stopped due to debugger request, and when they did, they
2285 reported a clean stop (GDB_SIGNAL_0). Do not proceed threads
2286 that have been explicitly been told to stop. */
2289 proceed_after_attach_callback (struct thread_info *thread,
2292 int pid = * (int *) arg;
2294 if (ptid_get_pid (thread->ptid) == pid
2295 && !is_exited (thread->ptid)
2296 && !is_executing (thread->ptid)
2297 && !thread->stop_requested
2298 && thread->suspend.stop_signal == GDB_SIGNAL_0)
2300 switch_to_thread (thread->ptid);
2301 clear_proceed_status ();
2302 proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT, 0);
2309 proceed_after_attach (int pid)
2311 /* Don't error out if the current thread is running, because
2312 there may be other stopped threads. */
2313 struct cleanup *old_chain;
2315 /* Backup current thread and selected frame. */
2316 old_chain = make_cleanup_restore_current_thread ();
2318 iterate_over_threads (proceed_after_attach_callback, &pid);
2320 /* Restore selected ptid. */
2321 do_cleanups (old_chain);
2326 * Should save/restore the tty state since it might be that the
2327 * program to be debugged was started on this tty and it wants
2328 * the tty in some state other than what we want. If it's running
2329 * on another terminal or without a terminal, then saving and
2330 * restoring the tty state is a harmless no-op.
2331 * This only needs to be done if we are attaching to a process.
2334 /* attach_command --
2335 takes a program started up outside of gdb and ``attaches'' to it.
2336 This stops it cold in its tracks and allows us to start debugging it.
2337 and wait for the trace-trap that results from attaching. */
2340 attach_command_post_wait (char *args, int from_tty, int async_exec)
2343 char *full_exec_path = NULL;
2344 struct inferior *inferior;
2346 inferior = current_inferior ();
2347 inferior->control.stop_soon = NO_STOP_QUIETLY;
2349 /* If no exec file is yet known, try to determine it from the
2351 exec_file = (char *) get_exec_file (0);
2354 exec_file = target_pid_to_exec_file (ptid_get_pid (inferior_ptid));
2357 /* It's possible we don't have a full path, but rather just a
2358 filename. Some targets, such as HP-UX, don't provide the
2361 Attempt to qualify the filename against the source path.
2362 (If that fails, we'll just fall back on the original
2363 filename. Not much more we can do...) */
2365 if (!source_full_path_of (exec_file, &full_exec_path))
2366 full_exec_path = xstrdup (exec_file);
2368 exec_file_attach (full_exec_path, from_tty);
2369 symbol_file_add_main (full_exec_path, from_tty);
2374 reopen_exec_file ();
2378 /* Take any necessary post-attaching actions for this platform. */
2379 target_post_attach (ptid_get_pid (inferior_ptid));
2381 post_create_inferior (¤t_target, from_tty);
2385 /* The user requested an `attach&', so be sure to leave threads
2386 that didn't get a signal running. */
2388 /* Immediatelly resume all suspended threads of this inferior,
2389 and this inferior only. This should have no effect on
2390 already running threads. If a thread has been stopped with a
2391 signal, leave it be. */
2393 proceed_after_attach (inferior->pid);
2396 if (inferior_thread ()->suspend.stop_signal == GDB_SIGNAL_0)
2398 clear_proceed_status ();
2399 proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT, 0);
2405 /* The user requested a plain `attach', so be sure to leave
2406 the inferior stopped. */
2408 if (target_can_async_p ())
2409 async_enable_stdin ();
2411 /* At least the current thread is already stopped. */
2413 /* In all-stop, by definition, all threads have to be already
2414 stopped at this point. In non-stop, however, although the
2415 selected thread is stopped, others may still be executing.
2416 Be sure to explicitly stop all threads of the process. This
2417 should have no effect on already stopped threads. */
2419 target_stop (pid_to_ptid (inferior->pid));
2421 /* Tell the user/frontend where we're stopped. */
2423 if (deprecated_attach_hook)
2424 deprecated_attach_hook ();
2428 struct attach_command_continuation_args
2436 attach_command_continuation (void *args, int err)
2438 struct attach_command_continuation_args *a = args;
2443 attach_command_post_wait (a->args, a->from_tty, a->async_exec);
2447 attach_command_continuation_free_args (void *args)
2449 struct attach_command_continuation_args *a = args;
2456 attach_command (char *args, int from_tty)
2459 struct target_ops *attach_target;
2461 dont_repeat (); /* Not for the faint of heart */
2463 if (gdbarch_has_global_solist (target_gdbarch ()))
2464 /* Don't complain if all processes share the same symbol
2467 else if (target_has_execution)
2469 if (query (_("A program is being debugged already. Kill it? ")))
2472 error (_("Not killed."));
2475 /* Clean up any leftovers from other runs. Some other things from
2476 this function should probably be moved into target_pre_inferior. */
2477 target_pre_inferior (from_tty);
2480 async_exec = strip_bg_char (&args);
2482 attach_target = find_attach_target ();
2484 prepare_execution_command (attach_target, async_exec);
2486 if (non_stop && !attach_target->to_supports_non_stop (attach_target))
2487 error (_("Cannot attach to this target in non-stop mode"));
2489 attach_target->to_attach (attach_target, args, from_tty);
2490 /* to_attach should push the target, so after this point we
2491 shouldn't refer to attach_target again. */
2492 attach_target = NULL;
2494 /* Set up the "saved terminal modes" of the inferior
2495 based on what modes we are starting it with. */
2496 target_terminal_init ();
2498 /* Install inferior's terminal modes. This may look like a no-op,
2499 as we've just saved them above, however, this does more than
2500 restore terminal settings:
2502 - installs a SIGINT handler that forwards SIGINT to the inferior.
2503 Otherwise a Ctrl-C pressed just while waiting for the initial
2504 stop would end up as a spurious Quit.
2506 - removes stdin from the event loop, which we need if attaching
2507 in the foreground, otherwise on targets that report an initial
2508 stop on attach (which are most) we'd process input/commands
2509 while we're in the event loop waiting for that stop. That is,
2510 before the attach continuation runs and the command is really
2512 target_terminal_inferior ();
2514 /* Set up execution context to know that we should return from
2515 wait_for_inferior as soon as the target reports a stop. */
2516 init_wait_for_inferior ();
2517 clear_proceed_status ();
2521 /* If we find that the current thread isn't stopped, explicitly
2522 do so now, because we're going to install breakpoints and
2526 /* The user requested an `attach&'; stop just one thread. */
2527 target_stop (inferior_ptid);
2529 /* The user requested an `attach', so stop all threads of this
2531 target_stop (pid_to_ptid (ptid_get_pid (inferior_ptid)));
2534 /* Some system don't generate traps when attaching to inferior.
2535 E.g. Mach 3 or GNU hurd. */
2536 if (!target_attach_no_wait)
2538 struct inferior *inferior = current_inferior ();
2540 /* Careful here. See comments in inferior.h. Basically some
2541 OSes don't ignore SIGSTOPs on continue requests anymore. We
2542 need a way for handle_inferior_event to reset the stop_signal
2543 variable after an attach, and this is what
2544 STOP_QUIETLY_NO_SIGSTOP is for. */
2545 inferior->control.stop_soon = STOP_QUIETLY_NO_SIGSTOP;
2547 if (target_can_async_p ())
2549 /* sync_execution mode. Wait for stop. */
2550 struct attach_command_continuation_args *a;
2552 a = xmalloc (sizeof (*a));
2553 a->args = xstrdup (args);
2554 a->from_tty = from_tty;
2555 a->async_exec = async_exec;
2556 add_inferior_continuation (attach_command_continuation, a,
2557 attach_command_continuation_free_args);
2561 wait_for_inferior ();
2564 attach_command_post_wait (args, from_tty, async_exec);
2567 /* We had just found out that the target was already attached to an
2568 inferior. PTID points at a thread of this new inferior, that is
2569 the most likely to be stopped right now, but not necessarily so.
2570 The new inferior is assumed to be already added to the inferior
2571 list at this point. If LEAVE_RUNNING, then leave the threads of
2572 this inferior running, except those we've explicitly seen reported
2576 notice_new_inferior (ptid_t ptid, int leave_running, int from_tty)
2578 struct cleanup* old_chain;
2581 old_chain = make_cleanup (null_cleanup, NULL);
2583 /* If in non-stop, leave threads as running as they were. If
2584 they're stopped for some reason other than us telling it to, the
2585 target reports a signal != GDB_SIGNAL_0. We don't try to
2586 resume threads with such a stop signal. */
2587 async_exec = non_stop;
2589 if (!ptid_equal (inferior_ptid, null_ptid))
2590 make_cleanup_restore_current_thread ();
2592 switch_to_thread (ptid);
2594 /* When we "notice" a new inferior we need to do all the things we
2595 would normally do if we had just attached to it. */
2597 if (is_executing (inferior_ptid))
2599 struct inferior *inferior = current_inferior ();
2601 /* We're going to install breakpoints, and poke at memory,
2602 ensure that the inferior is stopped for a moment while we do
2604 target_stop (inferior_ptid);
2606 inferior->control.stop_soon = STOP_QUIETLY_REMOTE;
2608 /* Wait for stop before proceeding. */
2609 if (target_can_async_p ())
2611 struct attach_command_continuation_args *a;
2613 a = xmalloc (sizeof (*a));
2614 a->args = xstrdup ("");
2615 a->from_tty = from_tty;
2616 a->async_exec = async_exec;
2617 add_inferior_continuation (attach_command_continuation, a,
2618 attach_command_continuation_free_args);
2620 do_cleanups (old_chain);
2624 wait_for_inferior ();
2627 async_exec = leave_running;
2628 attach_command_post_wait ("" /* args */, from_tty, async_exec);
2630 do_cleanups (old_chain);
2635 * takes a program previously attached to and detaches it.
2636 * The program resumes execution and will no longer stop
2637 * on signals, etc. We better not have left any breakpoints
2638 * in the program or it'll die when it hits one. For this
2639 * to work, it may be necessary for the process to have been
2640 * previously attached. It *might* work if the program was
2641 * started via the normal ptrace (PTRACE_TRACEME).
2645 detach_command (char *args, int from_tty)
2647 dont_repeat (); /* Not for the faint of heart. */
2649 if (ptid_equal (inferior_ptid, null_ptid))
2650 error (_("The program is not being run."));
2652 query_if_trace_running (from_tty);
2654 disconnect_tracing ();
2656 target_detach (args, from_tty);
2658 /* If the solist is global across inferiors, don't clear it when we
2659 detach from a single inferior. */
2660 if (!gdbarch_has_global_solist (target_gdbarch ()))
2661 no_shared_libraries (NULL, from_tty);
2663 /* If we still have inferiors to debug, then don't mess with their
2665 if (!have_inferiors ())
2666 init_thread_list ();
2668 if (deprecated_detach_hook)
2669 deprecated_detach_hook ();
2672 /* Disconnect from the current target without resuming it (leaving it
2673 waiting for a debugger).
2675 We'd better not have left any breakpoints in the program or the
2676 next debugger will get confused. Currently only supported for some
2677 remote targets, since the normal attach mechanisms don't work on
2678 stopped processes on some native platforms (e.g. GNU/Linux). */
2681 disconnect_command (char *args, int from_tty)
2683 dont_repeat (); /* Not for the faint of heart. */
2684 query_if_trace_running (from_tty);
2685 disconnect_tracing ();
2686 target_disconnect (args, from_tty);
2687 no_shared_libraries (NULL, from_tty);
2688 init_thread_list ();
2689 if (deprecated_detach_hook)
2690 deprecated_detach_hook ();
2694 interrupt_target_1 (int all_threads)
2699 ptid = minus_one_ptid;
2701 ptid = inferior_ptid;
2704 /* Tag the thread as having been explicitly requested to stop, so
2705 other parts of gdb know not to resume this thread automatically,
2706 if it was stopped due to an internal event. Limit this to
2707 non-stop mode, as when debugging a multi-threaded application in
2708 all-stop mode, we will only get one stop event --- it's undefined
2709 which thread will report the event. */
2711 set_stop_requested (ptid, 1);
2715 Stop the execution of the target while running in async mode, in
2716 the backgound. In all-stop, stop the whole process. In non-stop
2717 mode, stop the current thread only by default, or stop all threads
2718 if the `-a' switch is used. */
2721 interrupt_command (char *args, int from_tty)
2723 if (target_can_async_p ())
2725 int all_threads = 0;
2727 dont_repeat (); /* Not for the faint of heart. */
2730 && strncmp (args, "-a", sizeof ("-a") - 1) == 0)
2733 if (!non_stop && all_threads)
2734 error (_("-a is meaningless in all-stop mode."));
2736 interrupt_target_1 (all_threads);
2741 print_float_info (struct ui_file *file,
2742 struct frame_info *frame, const char *args)
2744 struct gdbarch *gdbarch = get_frame_arch (frame);
2746 if (gdbarch_print_float_info_p (gdbarch))
2747 gdbarch_print_float_info (gdbarch, file, frame, args);
2751 int printed_something = 0;
2754 regnum < gdbarch_num_regs (gdbarch)
2755 + gdbarch_num_pseudo_regs (gdbarch);
2758 if (gdbarch_register_reggroup_p (gdbarch, regnum, float_reggroup))
2760 printed_something = 1;
2761 gdbarch_print_registers_info (gdbarch, file, frame, regnum, 1);
2764 if (!printed_something)
2765 fprintf_filtered (file, "No floating-point info "
2766 "available for this processor.\n");
2771 float_info (char *args, int from_tty)
2773 if (!target_has_registers)
2774 error (_("The program has no registers now."));
2776 print_float_info (gdb_stdout, get_selected_frame (NULL), args);
2780 unset_command (char *args, int from_tty)
2782 printf_filtered (_("\"unset\" must be followed by the "
2783 "name of an unset subcommand.\n"));
2784 help_list (unsetlist, "unset ", all_commands, gdb_stdout);
2787 /* Implement `info proc' family of commands. */
2790 info_proc_cmd_1 (char *args, enum info_proc_what what, int from_tty)
2792 struct gdbarch *gdbarch = get_current_arch ();
2794 if (!target_info_proc (args, what))
2796 if (gdbarch_info_proc_p (gdbarch))
2797 gdbarch_info_proc (gdbarch, args, what);
2799 error (_("Not supported on this target."));
2803 /* Implement `info proc' when given without any futher parameters. */
2806 info_proc_cmd (char *args, int from_tty)
2808 info_proc_cmd_1 (args, IP_MINIMAL, from_tty);
2811 /* Implement `info proc mappings'. */
2814 info_proc_cmd_mappings (char *args, int from_tty)
2816 info_proc_cmd_1 (args, IP_MAPPINGS, from_tty);
2819 /* Implement `info proc stat'. */
2822 info_proc_cmd_stat (char *args, int from_tty)
2824 info_proc_cmd_1 (args, IP_STAT, from_tty);
2827 /* Implement `info proc status'. */
2830 info_proc_cmd_status (char *args, int from_tty)
2832 info_proc_cmd_1 (args, IP_STATUS, from_tty);
2835 /* Implement `info proc cwd'. */
2838 info_proc_cmd_cwd (char *args, int from_tty)
2840 info_proc_cmd_1 (args, IP_CWD, from_tty);
2843 /* Implement `info proc cmdline'. */
2846 info_proc_cmd_cmdline (char *args, int from_tty)
2848 info_proc_cmd_1 (args, IP_CMDLINE, from_tty);
2851 /* Implement `info proc exe'. */
2854 info_proc_cmd_exe (char *args, int from_tty)
2856 info_proc_cmd_1 (args, IP_EXE, from_tty);
2859 /* Implement `info proc all'. */
2862 info_proc_cmd_all (char *args, int from_tty)
2864 info_proc_cmd_1 (args, IP_ALL, from_tty);
2868 _initialize_infcmd (void)
2870 static struct cmd_list_element *info_proc_cmdlist;
2871 struct cmd_list_element *c = NULL;
2872 const char *cmd_name;
2874 /* Add the filename of the terminal connected to inferior I/O. */
2875 add_setshow_filename_cmd ("inferior-tty", class_run,
2876 &inferior_io_terminal_scratch, _("\
2877 Set terminal for future runs of program being debugged."), _("\
2878 Show terminal for future runs of program being debugged."), _("\
2879 Usage: set inferior-tty /dev/pts/1"),
2880 set_inferior_tty_command,
2881 show_inferior_tty_command,
2882 &setlist, &showlist);
2883 add_com_alias ("tty", "set inferior-tty", class_alias, 0);
2886 add_setshow_string_noescape_cmd (cmd_name, class_run,
2887 &inferior_args_scratch, _("\
2888 Set argument list to give program being debugged when it is started."), _("\
2889 Show argument list to give program being debugged when it is started."), _("\
2890 Follow this command with any number of args, to be passed to the program."),
2893 &setlist, &showlist);
2894 c = lookup_cmd (&cmd_name, setlist, "", -1, 1);
2895 gdb_assert (c != NULL);
2896 set_cmd_completer (c, filename_completer);
2898 c = add_cmd ("environment", no_class, environment_info, _("\
2899 The environment to give the program, or one variable's value.\n\
2900 With an argument VAR, prints the value of environment variable VAR to\n\
2901 give the program being debugged. With no arguments, prints the entire\n\
2902 environment to be given to the program."), &showlist);
2903 set_cmd_completer (c, noop_completer);
2905 add_prefix_cmd ("unset", no_class, unset_command,
2906 _("Complement to certain \"set\" commands."),
2907 &unsetlist, "unset ", 0, &cmdlist);
2909 c = add_cmd ("environment", class_run, unset_environment_command, _("\
2910 Cancel environment variable VAR for the program.\n\
2911 This does not affect the program until the next \"run\" command."),
2913 set_cmd_completer (c, noop_completer);
2915 c = add_cmd ("environment", class_run, set_environment_command, _("\
2916 Set environment variable value to give the program.\n\
2917 Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\
2918 VALUES of environment variables are uninterpreted strings.\n\
2919 This does not affect the program until the next \"run\" command."),
2921 set_cmd_completer (c, noop_completer);
2923 c = add_com ("path", class_files, path_command, _("\
2924 Add directory DIR(s) to beginning of search path for object files.\n\
2925 $cwd in the path means the current working directory.\n\
2926 This path is equivalent to the $PATH shell variable. It is a list of\n\
2927 directories, separated by colons. These directories are searched to find\n\
2928 fully linked executable files and separately compiled object files as \
2930 set_cmd_completer (c, filename_completer);
2932 c = add_cmd ("paths", no_class, path_info, _("\
2933 Current search path for finding object files.\n\
2934 $cwd in the path means the current working directory.\n\
2935 This path is equivalent to the $PATH shell variable. It is a list of\n\
2936 directories, separated by colons. These directories are searched to find\n\
2937 fully linked executable files and separately compiled object files as \
2940 set_cmd_completer (c, noop_completer);
2942 add_prefix_cmd ("kill", class_run, kill_command,
2943 _("Kill execution of program being debugged."),
2944 &killlist, "kill ", 0, &cmdlist);
2946 add_com ("attach", class_run, attach_command, _("\
2947 Attach to a process or file outside of GDB.\n\
2948 This command attaches to another target, of the same type as your last\n\
2949 \"target\" command (\"info files\" will show your target stack).\n\
2950 The command may take as argument a process id or a device file.\n\
2951 For a process id, you must have permission to send the process a signal,\n\
2952 and it must have the same effective uid as the debugger.\n\
2953 When using \"attach\" with a process id, the debugger finds the\n\
2954 program running in the process, looking first in the current working\n\
2955 directory, or (if not found there) using the source file search path\n\
2956 (see the \"directory\" command). You can also use the \"file\" command\n\
2957 to specify the program, and to load its symbol table."));
2959 add_prefix_cmd ("detach", class_run, detach_command, _("\
2960 Detach a process or file previously attached.\n\
2961 If a process, it is no longer traced, and it continues its execution. If\n\
2962 you were debugging a file, the file is closed and gdb no longer accesses it."),
2963 &detachlist, "detach ", 0, &cmdlist);
2965 add_com ("disconnect", class_run, disconnect_command, _("\
2966 Disconnect from a target.\n\
2967 The target will wait for another debugger to connect. Not available for\n\
2970 c = add_com ("signal", class_run, signal_command, _("\
2971 Continue program with the specified signal.\n\
2972 Usage: signal SIGNAL\n\
2973 The SIGNAL argument is processed the same as the handle command.\n\
2975 An argument of \"0\" means continue the program without sending it a signal.\n\
2976 This is useful in cases where the program stopped because of a signal,\n\
2977 and you want to resume the program while discarding the signal."));
2978 set_cmd_completer (c, signal_completer);
2980 add_com ("stepi", class_run, stepi_command, _("\
2981 Step one instruction exactly.\n\
2983 Argument N means step N times (or till program stops for another \
2985 add_com_alias ("si", "stepi", class_alias, 0);
2987 add_com ("nexti", class_run, nexti_command, _("\
2988 Step one instruction, but proceed through subroutine calls.\n\
2990 Argument N means step N times (or till program stops for another \
2992 add_com_alias ("ni", "nexti", class_alias, 0);
2994 add_com ("finish", class_run, finish_command, _("\
2995 Execute until selected stack frame returns.\n\
2997 Upon return, the value returned is printed and put in the value history."));
2998 add_com_alias ("fin", "finish", class_run, 1);
3000 add_com ("next", class_run, next_command, _("\
3001 Step program, proceeding through subroutine calls.\n\
3003 Unlike \"step\", if the current source line calls a subroutine,\n\
3004 this command does not enter the subroutine, but instead steps over\n\
3005 the call, in effect treating it as a single source line."));
3006 add_com_alias ("n", "next", class_run, 1);
3008 add_com_alias ("S", "next", class_run, 1);
3010 add_com ("step", class_run, step_command, _("\
3011 Step program until it reaches a different source line.\n\
3013 Argument N means step N times (or till program stops for another \
3015 add_com_alias ("s", "step", class_run, 1);
3017 c = add_com ("until", class_run, until_command, _("\
3018 Execute until the program reaches a source line greater than the current\n\
3019 or a specified location (same args as break command) within the current \
3021 set_cmd_completer (c, location_completer);
3022 add_com_alias ("u", "until", class_run, 1);
3024 c = add_com ("advance", class_run, advance_command, _("\
3025 Continue the program up to the given location (same form as args for break \
3027 Execution will also stop upon exit from the current stack frame."));
3028 set_cmd_completer (c, location_completer);
3030 c = add_com ("jump", class_run, jump_command, _("\
3031 Continue program being debugged at specified line or address.\n\
3032 Usage: jump <location>\n\
3033 Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\
3034 for an address to start at."));
3035 set_cmd_completer (c, location_completer);
3036 add_com_alias ("j", "jump", class_run, 1);
3040 c = add_com ("go", class_run, go_command, _("\
3041 Usage: go <location>\n\
3042 Continue program being debugged, stopping at specified line or \n\
3044 Give as argument either LINENUM or *ADDR, where ADDR is an \n\
3045 expression for an address to start at.\n\
3046 This command is a combination of tbreak and jump."));
3047 set_cmd_completer (c, location_completer);
3051 add_com_alias ("g", "go", class_run, 1);
3053 add_com ("continue", class_run, continue_command, _("\
3054 Continue program being debugged, after signal or breakpoint.\n\
3055 Usage: continue [N]\n\
3056 If proceeding from breakpoint, a number N may be used as an argument,\n\
3057 which means to set the ignore count of that breakpoint to N - 1 (so that\n\
3058 the breakpoint won't break until the Nth time it is reached).\n\
3060 If non-stop mode is enabled, continue only the current thread,\n\
3061 otherwise all the threads in the program are continued. To \n\
3062 continue all stopped threads in non-stop mode, use the -a option.\n\
3063 Specifying -a and an ignore count simultaneously is an error."));
3064 add_com_alias ("c", "cont", class_run, 1);
3065 add_com_alias ("fg", "cont", class_run, 1);
3067 c = add_com ("run", class_run, run_command, _("\
3068 Start debugged program. You may specify arguments to give it.\n\
3069 Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\
3070 Input and output redirection with \">\", \"<\", or \">>\" are also \
3072 With no arguments, uses arguments last specified (with \"run\" \
3073 or \"set args\").\n\
3074 To cancel previous arguments and run with no arguments,\n\
3075 use \"set args\" without arguments."));
3076 set_cmd_completer (c, filename_completer);
3077 add_com_alias ("r", "run", class_run, 1);
3079 add_com ("R", class_run, run_no_args_command,
3080 _("Start debugged program with no arguments."));
3082 c = add_com ("start", class_run, start_command, _("\
3083 Run the debugged program until the beginning of the main procedure.\n\
3084 You may specify arguments to give to your program, just as with the\n\
3085 \"run\" command."));
3086 set_cmd_completer (c, filename_completer);
3088 add_com ("interrupt", class_run, interrupt_command,
3089 _("Interrupt the execution of the debugged program.\n\
3090 If non-stop mode is enabled, interrupt only the current thread,\n\
3091 otherwise all the threads in the program are stopped. To \n\
3092 interrupt all running threads in non-stop mode, use the -a option."));
3094 add_info ("registers", nofp_registers_info, _("\
3095 List of integer registers and their contents, for selected stack frame.\n\
3096 Register name as argument means describe only that register."));
3097 add_info_alias ("r", "registers", 1);
3100 add_com ("lr", class_info, nofp_registers_info, _("\
3101 List of integer registers and their contents, for selected stack frame.\n\
3102 Register name as argument means describe only that register."));
3103 add_info ("all-registers", all_registers_info, _("\
3104 List of all registers and their contents, for selected stack frame.\n\
3105 Register name as argument means describe only that register."));
3107 add_info ("program", program_info,
3108 _("Execution status of the program."));
3110 add_info ("float", float_info,
3111 _("Print the status of the floating point unit\n"));
3113 add_info ("vector", vector_info,
3114 _("Print the status of the vector unit\n"));
3116 add_prefix_cmd ("proc", class_info, info_proc_cmd,
3118 Show /proc process information about any running process.\n\
3119 Specify any process id, or use the program being debugged by default."),
3120 &info_proc_cmdlist, "info proc ",
3121 1/*allow-unknown*/, &infolist);
3123 add_cmd ("mappings", class_info, info_proc_cmd_mappings, _("\
3124 List of mapped memory regions."),
3125 &info_proc_cmdlist);
3127 add_cmd ("stat", class_info, info_proc_cmd_stat, _("\
3128 List process info from /proc/PID/stat."),
3129 &info_proc_cmdlist);
3131 add_cmd ("status", class_info, info_proc_cmd_status, _("\
3132 List process info from /proc/PID/status."),
3133 &info_proc_cmdlist);
3135 add_cmd ("cwd", class_info, info_proc_cmd_cwd, _("\
3136 List current working directory of the process."),
3137 &info_proc_cmdlist);
3139 add_cmd ("cmdline", class_info, info_proc_cmd_cmdline, _("\
3140 List command line arguments of the process."),
3141 &info_proc_cmdlist);
3143 add_cmd ("exe", class_info, info_proc_cmd_exe, _("\
3144 List absolute filename for executable of the process."),
3145 &info_proc_cmdlist);
3147 add_cmd ("all", class_info, info_proc_cmd_all, _("\
3148 List all available /proc info."),
3149 &info_proc_cmdlist);