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 (0);
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 (0);
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 (!skip_subroutines);
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 (0);
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);
1248 /* Look for threads other than the current that this command ends up
1249 resuming too (due to schedlock off), and warn if they'll get a
1250 signal delivered. "signal 0" is used to suppress a previous
1251 signal, but if the current thread is no longer the one that got
1252 the signal, then the user is potentially suppressing the signal
1253 of the wrong thread. */
1256 struct thread_info *tp;
1258 int must_confirm = 0;
1260 /* This indicates what will be resumed. Either a single thread,
1261 a whole process, or all threads of all processes. */
1262 resume_ptid = user_visible_resume_ptid (0);
1264 ALL_NON_EXITED_THREADS (tp)
1266 if (ptid_equal (tp->ptid, inferior_ptid))
1268 if (!ptid_match (tp->ptid, resume_ptid))
1271 if (tp->suspend.stop_signal != GDB_SIGNAL_0
1272 && signal_pass_state (tp->suspend.stop_signal))
1275 printf_unfiltered (_("Note:\n"));
1276 printf_unfiltered (_(" Thread %d previously stopped with signal %s, %s.\n"),
1278 gdb_signal_to_name (tp->suspend.stop_signal),
1279 gdb_signal_to_string (tp->suspend.stop_signal));
1285 && !query (_("Continuing thread %d (the current thread) with specified signal will\n"
1286 "still deliver the signals noted above to their respective threads.\n"
1287 "Continue anyway? "),
1288 inferior_thread ()->num))
1289 error (_("Not confirmed."));
1294 if (oursig == GDB_SIGNAL_0)
1295 printf_filtered (_("Continuing with no signal.\n"));
1297 printf_filtered (_("Continuing with signal %s.\n"),
1298 gdb_signal_to_name (oursig));
1301 clear_proceed_status (0);
1302 proceed ((CORE_ADDR) -1, oursig, 0);
1305 /* Continuation args to be passed to the "until" command
1307 struct until_next_continuation_args
1309 /* The thread that was current when the command was executed. */
1313 /* A continuation callback for until_next_command. */
1316 until_next_continuation (void *arg, int err)
1318 struct until_next_continuation_args *a = arg;
1320 delete_longjmp_breakpoint (a->thread);
1323 /* Proceed until we reach a different source line with pc greater than
1324 our current one or exit the function. We skip calls in both cases.
1326 Note that eventually this command should probably be changed so
1327 that only source lines are printed out when we hit the breakpoint
1328 we set. This may involve changes to wait_for_inferior and the
1329 proceed status code. */
1332 until_next_command (int from_tty)
1334 struct frame_info *frame;
1336 struct symbol *func;
1337 struct symtab_and_line sal;
1338 struct thread_info *tp = inferior_thread ();
1339 int thread = tp->num;
1340 struct cleanup *old_chain;
1342 clear_proceed_status (0);
1345 frame = get_current_frame ();
1347 /* Step until either exited from this function or greater
1348 than the current line (if in symbolic section) or pc (if
1351 pc = get_frame_pc (frame);
1352 func = find_pc_function (pc);
1356 struct bound_minimal_symbol msymbol = lookup_minimal_symbol_by_pc (pc);
1358 if (msymbol.minsym == NULL)
1359 error (_("Execution is not within a known function."));
1361 tp->control.step_range_start = BMSYMBOL_VALUE_ADDRESS (msymbol);
1362 /* The upper-bound of step_range is exclusive. In order to make PC
1363 within the range, set the step_range_end with PC + 1. */
1364 tp->control.step_range_end = pc + 1;
1368 sal = find_pc_line (pc, 0);
1370 tp->control.step_range_start = BLOCK_START (SYMBOL_BLOCK_VALUE (func));
1371 tp->control.step_range_end = sal.end;
1373 tp->control.may_range_step = 1;
1375 tp->control.step_over_calls = STEP_OVER_ALL;
1377 tp->step_multi = 0; /* Only one call to proceed */
1379 set_longjmp_breakpoint (tp, get_frame_id (frame));
1380 old_chain = make_cleanup (delete_longjmp_breakpoint_cleanup, &thread);
1382 proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT, 1);
1384 if (target_can_async_p () && is_running (inferior_ptid))
1386 struct until_next_continuation_args *cont_args;
1388 discard_cleanups (old_chain);
1389 cont_args = XNEW (struct until_next_continuation_args);
1390 cont_args->thread = inferior_thread ()->num;
1392 add_continuation (tp, until_next_continuation, cont_args, xfree);
1395 do_cleanups (old_chain);
1399 until_command (char *arg, int from_tty)
1404 ensure_not_tfind_mode ();
1405 ensure_valid_thread ();
1406 ensure_not_running ();
1408 /* Find out whether we must run in the background. */
1410 async_exec = strip_bg_char (&arg);
1412 prepare_execution_command (¤t_target, async_exec);
1415 until_break_command (arg, from_tty, 0);
1417 until_next_command (from_tty);
1421 advance_command (char *arg, int from_tty)
1426 ensure_not_tfind_mode ();
1427 ensure_valid_thread ();
1428 ensure_not_running ();
1431 error_no_arg (_("a location"));
1433 /* Find out whether we must run in the background. */
1435 async_exec = strip_bg_char (&arg);
1437 prepare_execution_command (¤t_target, async_exec);
1439 until_break_command (arg, from_tty, 1);
1442 /* Return the value of the result of a function at the end of a 'finish'
1446 get_return_value (struct value *function, struct type *value_type)
1448 struct regcache *stop_regs = stop_registers;
1449 struct gdbarch *gdbarch;
1450 struct value *value;
1451 struct cleanup *cleanup = make_cleanup (null_cleanup, NULL);
1453 /* If stop_registers were not saved, use the current registers. */
1456 stop_regs = regcache_dup (get_current_regcache ());
1457 make_cleanup_regcache_xfree (stop_regs);
1460 gdbarch = get_regcache_arch (stop_regs);
1462 CHECK_TYPEDEF (value_type);
1463 gdb_assert (TYPE_CODE (value_type) != TYPE_CODE_VOID);
1465 /* FIXME: 2003-09-27: When returning from a nested inferior function
1466 call, it's possible (with no help from the architecture vector)
1467 to locate and return/print a "struct return" value. This is just
1468 a more complicated case of what is already being done in the
1469 inferior function call code. In fact, when inferior function
1470 calls are made async, this will likely be made the norm. */
1472 switch (gdbarch_return_value (gdbarch, function, value_type,
1475 case RETURN_VALUE_REGISTER_CONVENTION:
1476 case RETURN_VALUE_ABI_RETURNS_ADDRESS:
1477 case RETURN_VALUE_ABI_PRESERVES_ADDRESS:
1478 value = allocate_value (value_type);
1479 gdbarch_return_value (gdbarch, function, value_type, stop_regs,
1480 value_contents_raw (value), NULL);
1482 case RETURN_VALUE_STRUCT_CONVENTION:
1486 internal_error (__FILE__, __LINE__, _("bad switch"));
1489 do_cleanups (cleanup);
1494 /* Print the result of a function at the end of a 'finish' command. */
1497 print_return_value (struct value *function, struct type *value_type)
1499 struct value *value = get_return_value (function, value_type);
1500 struct ui_out *uiout = current_uiout;
1504 struct value_print_options opts;
1505 struct ui_file *stb;
1506 struct cleanup *old_chain;
1509 stb = mem_fileopen ();
1510 old_chain = make_cleanup_ui_file_delete (stb);
1511 ui_out_text (uiout, "Value returned is ");
1512 ui_out_field_fmt (uiout, "gdb-result-var", "$%d",
1513 record_latest_value (value));
1514 ui_out_text (uiout, " = ");
1515 get_no_prettyformat_print_options (&opts);
1516 value_print (value, stb, &opts);
1517 ui_out_field_stream (uiout, "return-value", stb);
1518 ui_out_text (uiout, "\n");
1519 do_cleanups (old_chain);
1523 ui_out_text (uiout, "Value returned has type: ");
1524 ui_out_field_string (uiout, "return-type", TYPE_NAME (value_type));
1525 ui_out_text (uiout, ".");
1526 ui_out_text (uiout, " Cannot determine contents\n");
1530 /* Stuff that needs to be done by the finish command after the target
1531 has stopped. In asynchronous mode, we wait for the target to stop
1532 in the call to poll or select in the event loop, so it is
1533 impossible to do all the stuff as part of the finish_command
1534 function itself. The only chance we have to complete this command
1535 is in fetch_inferior_event, which is called by the event loop as
1536 soon as it detects that the target has stopped. */
1538 struct finish_command_continuation_args
1540 /* The thread that as current when the command was executed. */
1542 struct breakpoint *breakpoint;
1543 struct symbol *function;
1547 finish_command_continuation (void *arg, int err)
1549 struct finish_command_continuation_args *a = arg;
1553 struct thread_info *tp = NULL;
1556 if (!ptid_equal (inferior_ptid, null_ptid)
1557 && target_has_execution
1558 && is_stopped (inferior_ptid))
1560 tp = inferior_thread ();
1561 bs = tp->control.stop_bpstat;
1564 if (bpstat_find_breakpoint (bs, a->breakpoint) != NULL
1565 && a->function != NULL)
1567 struct type *value_type;
1569 value_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (a->function));
1571 internal_error (__FILE__, __LINE__,
1572 _("finish_command: function has no target type"));
1574 if (TYPE_CODE (value_type) != TYPE_CODE_VOID)
1576 volatile struct gdb_exception ex;
1579 func = read_var_value (a->function, get_current_frame ());
1580 TRY_CATCH (ex, RETURN_MASK_ALL)
1582 /* print_return_value can throw an exception in some
1583 circumstances. We need to catch this so that we still
1584 delete the breakpoint. */
1585 print_return_value (func, value_type);
1588 exception_print (gdb_stdout, ex);
1592 /* We suppress normal call of normal_stop observer and do it
1593 here so that the *stopped notification includes the return
1595 if (bs != NULL && tp->control.proceed_to_finish)
1596 observer_notify_normal_stop (bs, 1 /* print frame */);
1599 delete_breakpoint (a->breakpoint);
1600 delete_longjmp_breakpoint (a->thread);
1604 finish_command_continuation_free_arg (void *arg)
1609 /* finish_backward -- helper function for finish_command. */
1612 finish_backward (struct symbol *function)
1614 struct symtab_and_line sal;
1615 struct thread_info *tp = inferior_thread ();
1617 CORE_ADDR func_addr;
1619 pc = get_frame_pc (get_current_frame ());
1621 if (find_pc_partial_function (pc, NULL, &func_addr, NULL) == 0)
1622 error (_("Cannot find bounds of current 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 prepare_execution_command (¤t_target, async_exec);
1729 error (_("The \"finish\" command does not take any arguments."));
1731 frame = get_prev_frame (get_selected_frame (_("No selected frame.")));
1733 error (_("\"finish\" not meaningful in the outermost frame."));
1735 clear_proceed_status (0);
1737 /* Finishing from an inline frame is completely different. We don't
1738 try to show the "return value" - no way to locate it. So we do
1739 not need a completion. */
1740 if (get_frame_type (get_selected_frame (_("No selected frame.")))
1743 /* Claim we are stepping in the calling frame. An empty step
1744 range means that we will stop once we aren't in a function
1745 called by that frame. We don't use the magic "1" value for
1746 step_range_end, because then infrun will think this is nexti,
1747 and not step over the rest of this inlined function call. */
1748 struct thread_info *tp = inferior_thread ();
1749 struct symtab_and_line empty_sal;
1751 init_sal (&empty_sal);
1752 set_step_info (frame, empty_sal);
1753 tp->control.step_range_start = get_frame_pc (frame);
1754 tp->control.step_range_end = tp->control.step_range_start;
1755 tp->control.step_over_calls = STEP_OVER_ALL;
1757 /* Print info on the selected frame, including level number but not
1761 printf_filtered (_("Run till exit from "));
1762 print_stack_frame (get_selected_frame (NULL), 1, LOCATION, 0);
1765 proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT, 1);
1769 /* Ignore TAILCALL_FRAME type frames, they were executed already before
1770 entering THISFRAME. */
1771 while (get_frame_type (frame) == TAILCALL_FRAME)
1772 frame = get_prev_frame (frame);
1774 /* Find the function we will return from. */
1776 function = find_pc_function (get_frame_pc (get_selected_frame (NULL)));
1778 /* Print info on the selected frame, including level number but not
1782 if (execution_direction == EXEC_REVERSE)
1783 printf_filtered (_("Run back to call of "));
1785 printf_filtered (_("Run till exit from "));
1787 print_stack_frame (get_selected_frame (NULL), 1, LOCATION, 0);
1790 if (execution_direction == EXEC_REVERSE)
1791 finish_backward (function);
1793 finish_forward (function, frame);
1798 program_info (char *args, int from_tty)
1802 struct thread_info *tp;
1805 if (!target_has_execution)
1807 printf_filtered (_("The program being debugged is not being run.\n"));
1812 ptid = inferior_ptid;
1815 struct target_waitstatus ws;
1817 get_last_target_status (&ptid, &ws);
1820 if (ptid_equal (ptid, null_ptid) || is_exited (ptid))
1821 error (_("Invalid selected thread."));
1822 else if (is_running (ptid))
1823 error (_("Selected thread is running."));
1825 tp = find_thread_ptid (ptid);
1826 bs = tp->control.stop_bpstat;
1827 stat = bpstat_num (&bs, &num);
1829 target_files_info ();
1830 printf_filtered (_("Program stopped at %s.\n"),
1831 paddress (target_gdbarch (), stop_pc));
1832 if (tp->control.stop_step)
1833 printf_filtered (_("It stopped after being stepped.\n"));
1836 /* There may be several breakpoints in the same place, so this
1837 isn't as strange as it seems. */
1842 printf_filtered (_("It stopped at a breakpoint "
1843 "that has since been deleted.\n"));
1846 printf_filtered (_("It stopped at breakpoint %d.\n"), num);
1847 stat = bpstat_num (&bs, &num);
1850 else if (tp->suspend.stop_signal != GDB_SIGNAL_0)
1852 printf_filtered (_("It stopped with signal %s, %s.\n"),
1853 gdb_signal_to_name (tp->suspend.stop_signal),
1854 gdb_signal_to_string (tp->suspend.stop_signal));
1859 printf_filtered (_("Type \"info stack\" or \"info "
1860 "registers\" for more information.\n"));
1865 environment_info (char *var, int from_tty)
1869 char *val = get_in_environ (current_inferior ()->environment, var);
1873 puts_filtered (var);
1874 puts_filtered (" = ");
1875 puts_filtered (val);
1876 puts_filtered ("\n");
1880 puts_filtered ("Environment variable \"");
1881 puts_filtered (var);
1882 puts_filtered ("\" not defined.\n");
1887 char **vector = environ_vector (current_inferior ()->environment);
1891 puts_filtered (*vector++);
1892 puts_filtered ("\n");
1898 set_environment_command (char *arg, int from_tty)
1900 char *p, *val, *var;
1904 error_no_arg (_("environment variable and value"));
1906 /* Find seperation between variable name and value. */
1907 p = (char *) strchr (arg, '=');
1908 val = (char *) strchr (arg, ' ');
1910 if (p != 0 && val != 0)
1912 /* We have both a space and an equals. If the space is before the
1913 equals, walk forward over the spaces til we see a nonspace
1914 (possibly the equals). */
1919 /* Now if the = is after the char following the spaces,
1920 take the char following the spaces. */
1924 else if (val != 0 && p == 0)
1928 error_no_arg (_("environment variable to set"));
1930 if (p == 0 || p[1] == 0)
1934 p = arg + strlen (arg); /* So that savestring below will work. */
1938 /* Not setting variable value to null. */
1940 while (*val == ' ' || *val == '\t')
1944 while (p != arg && (p[-1] == ' ' || p[-1] == '\t'))
1947 var = savestring (arg, p - arg);
1950 printf_filtered (_("Setting environment variable "
1951 "\"%s\" to null value.\n"),
1953 set_in_environ (current_inferior ()->environment, var, "");
1956 set_in_environ (current_inferior ()->environment, var, val);
1961 unset_environment_command (char *var, int from_tty)
1965 /* If there is no argument, delete all environment variables.
1966 Ask for confirmation if reading from the terminal. */
1967 if (!from_tty || query (_("Delete all environment variables? ")))
1969 free_environ (current_inferior ()->environment);
1970 current_inferior ()->environment = make_environ ();
1974 unset_in_environ (current_inferior ()->environment, var);
1977 /* Handle the execution path (PATH variable). */
1979 static const char path_var_name[] = "PATH";
1982 path_info (char *args, int from_tty)
1984 puts_filtered ("Executable and object file path: ");
1985 puts_filtered (get_in_environ (current_inferior ()->environment,
1987 puts_filtered ("\n");
1990 /* Add zero or more directories to the front of the execution path. */
1993 path_command (char *dirname, int from_tty)
1999 env = get_in_environ (current_inferior ()->environment, path_var_name);
2000 /* Can be null if path is not set. */
2003 exec_path = xstrdup (env);
2004 mod_path (dirname, &exec_path);
2005 set_in_environ (current_inferior ()->environment, path_var_name, exec_path);
2008 path_info ((char *) NULL, from_tty);
2012 /* Print out the register NAME with value VAL, to FILE, in the default
2016 default_print_one_register_info (struct ui_file *file,
2020 struct type *regtype = value_type (val);
2021 int print_raw_format;
2023 fputs_filtered (name, file);
2024 print_spaces_filtered (15 - strlen (name), file);
2026 print_raw_format = (value_entirely_available (val)
2027 && !value_optimized_out (val));
2029 /* If virtual format is floating, print it that way, and in raw
2031 if (TYPE_CODE (regtype) == TYPE_CODE_FLT
2032 || TYPE_CODE (regtype) == TYPE_CODE_DECFLOAT)
2035 struct value_print_options opts;
2036 const gdb_byte *valaddr = value_contents_for_printing (val);
2037 enum bfd_endian byte_order = gdbarch_byte_order (get_type_arch (regtype));
2039 get_user_print_options (&opts);
2043 value_contents_for_printing (val),
2044 value_embedded_offset (val), 0,
2045 file, 0, val, &opts, current_language);
2047 if (print_raw_format)
2049 fprintf_filtered (file, "\t(raw ");
2050 print_hex_chars (file, valaddr, TYPE_LENGTH (regtype), byte_order);
2051 fprintf_filtered (file, ")");
2056 struct value_print_options opts;
2058 /* Print the register in hex. */
2059 get_formatted_print_options (&opts, 'x');
2062 value_contents_for_printing (val),
2063 value_embedded_offset (val), 0,
2064 file, 0, val, &opts, current_language);
2065 /* If not a vector register, print it also according to its
2067 if (print_raw_format && TYPE_VECTOR (regtype) == 0)
2069 get_user_print_options (&opts);
2071 fprintf_filtered (file, "\t");
2073 value_contents_for_printing (val),
2074 value_embedded_offset (val), 0,
2075 file, 0, val, &opts, current_language);
2079 fprintf_filtered (file, "\n");
2082 /* Print out the machine register regnum. If regnum is -1, print all
2083 registers (print_all == 1) or all non-float and non-vector
2084 registers (print_all == 0).
2086 For most machines, having all_registers_info() print the
2087 register(s) one per line is good enough. If a different format is
2088 required, (eg, for MIPS or Pyramid 90x, which both have lots of
2089 regs), or there is an existing convention for showing all the
2090 registers, define the architecture method PRINT_REGISTERS_INFO to
2091 provide that format. */
2094 default_print_registers_info (struct gdbarch *gdbarch,
2095 struct ui_file *file,
2096 struct frame_info *frame,
2097 int regnum, int print_all)
2100 const int numregs = gdbarch_num_regs (gdbarch)
2101 + gdbarch_num_pseudo_regs (gdbarch);
2103 for (i = 0; i < numregs; i++)
2105 /* Decide between printing all regs, non-float / vector regs, or
2111 if (!gdbarch_register_reggroup_p (gdbarch, i, all_reggroup))
2116 if (!gdbarch_register_reggroup_p (gdbarch, i, general_reggroup))
2126 /* If the register name is empty, it is undefined for this
2127 processor, so don't display anything. */
2128 if (gdbarch_register_name (gdbarch, i) == NULL
2129 || *(gdbarch_register_name (gdbarch, i)) == '\0')
2132 default_print_one_register_info (file,
2133 gdbarch_register_name (gdbarch, i),
2134 value_of_register (i, frame));
2139 registers_info (char *addr_exp, int fpregs)
2141 struct frame_info *frame;
2142 struct gdbarch *gdbarch;
2144 if (!target_has_registers)
2145 error (_("The program has no registers now."));
2146 frame = get_selected_frame (NULL);
2147 gdbarch = get_frame_arch (frame);
2151 gdbarch_print_registers_info (gdbarch, gdb_stdout,
2156 while (*addr_exp != '\0')
2161 /* Skip leading white space. */
2162 addr_exp = skip_spaces (addr_exp);
2164 /* Discard any leading ``$''. Check that there is something
2165 resembling a register following it. */
2166 if (addr_exp[0] == '$')
2168 if (isspace ((*addr_exp)) || (*addr_exp) == '\0')
2169 error (_("Missing register name"));
2171 /* Find the start/end of this register name/num/group. */
2173 while ((*addr_exp) != '\0' && !isspace ((*addr_exp)))
2177 /* Figure out what we've found and display it. */
2179 /* A register name? */
2181 int regnum = user_reg_map_name_to_regnum (gdbarch, start, end - start);
2185 /* User registers lie completely outside of the range of
2186 normal registers. Catch them early so that the target
2188 if (regnum >= gdbarch_num_regs (gdbarch)
2189 + gdbarch_num_pseudo_regs (gdbarch))
2191 struct value *regval = value_of_user_reg (regnum, frame);
2192 const char *regname = user_reg_map_regnum_to_name (gdbarch,
2195 /* Print in the same fashion
2196 gdbarch_print_registers_info's default
2197 implementation prints. */
2198 default_print_one_register_info (gdb_stdout,
2203 gdbarch_print_registers_info (gdbarch, gdb_stdout,
2204 frame, regnum, fpregs);
2209 /* A register group? */
2211 struct reggroup *group;
2213 for (group = reggroup_next (gdbarch, NULL);
2215 group = reggroup_next (gdbarch, group))
2217 /* Don't bother with a length check. Should the user
2218 enter a short register group name, go with the first
2219 group that matches. */
2220 if (strncmp (start, reggroup_name (group), end - start) == 0)
2228 regnum < gdbarch_num_regs (gdbarch)
2229 + gdbarch_num_pseudo_regs (gdbarch);
2232 if (gdbarch_register_reggroup_p (gdbarch, regnum, group))
2233 gdbarch_print_registers_info (gdbarch,
2241 /* Nothing matched. */
2242 error (_("Invalid register `%.*s'"), (int) (end - start), start);
2247 all_registers_info (char *addr_exp, int from_tty)
2249 registers_info (addr_exp, 1);
2253 nofp_registers_info (char *addr_exp, int from_tty)
2255 registers_info (addr_exp, 0);
2259 print_vector_info (struct ui_file *file,
2260 struct frame_info *frame, const char *args)
2262 struct gdbarch *gdbarch = get_frame_arch (frame);
2264 if (gdbarch_print_vector_info_p (gdbarch))
2265 gdbarch_print_vector_info (gdbarch, file, frame, args);
2269 int printed_something = 0;
2272 regnum < gdbarch_num_regs (gdbarch)
2273 + gdbarch_num_pseudo_regs (gdbarch);
2276 if (gdbarch_register_reggroup_p (gdbarch, regnum, vector_reggroup))
2278 printed_something = 1;
2279 gdbarch_print_registers_info (gdbarch, file, frame, regnum, 1);
2282 if (!printed_something)
2283 fprintf_filtered (file, "No vector information\n");
2288 vector_info (char *args, int from_tty)
2290 if (!target_has_registers)
2291 error (_("The program has no registers now."));
2293 print_vector_info (gdb_stdout, get_selected_frame (NULL), args);
2296 /* Kill the inferior process. Make us have no inferior. */
2299 kill_command (char *arg, int from_tty)
2301 /* FIXME: This should not really be inferior_ptid (or target_has_execution).
2302 It should be a distinct flag that indicates that a target is active, cuz
2303 some targets don't have processes! */
2305 if (ptid_equal (inferior_ptid, null_ptid))
2306 error (_("The program is not being run."));
2307 if (!query (_("Kill the program being debugged? ")))
2308 error (_("Not confirmed."));
2311 /* If we still have other inferiors to debug, then don't mess with
2312 with their threads. */
2313 if (!have_inferiors ())
2315 init_thread_list (); /* Destroy thread info. */
2317 /* Killing off the inferior can leave us with a core file. If
2318 so, print the state we are left in. */
2319 if (target_has_stack)
2321 printf_filtered (_("In %s,\n"), target_longname);
2322 print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1);
2325 bfd_cache_close_all ();
2328 /* Used in `attach&' command. ARG is a point to an integer
2329 representing a process id. Proceed threads of this process iff
2330 they stopped due to debugger request, and when they did, they
2331 reported a clean stop (GDB_SIGNAL_0). Do not proceed threads
2332 that have been explicitly been told to stop. */
2335 proceed_after_attach_callback (struct thread_info *thread,
2338 int pid = * (int *) arg;
2340 if (ptid_get_pid (thread->ptid) == pid
2341 && !is_exited (thread->ptid)
2342 && !is_executing (thread->ptid)
2343 && !thread->stop_requested
2344 && thread->suspend.stop_signal == GDB_SIGNAL_0)
2346 switch_to_thread (thread->ptid);
2347 clear_proceed_status (0);
2348 proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT, 0);
2355 proceed_after_attach (int pid)
2357 /* Don't error out if the current thread is running, because
2358 there may be other stopped threads. */
2359 struct cleanup *old_chain;
2361 /* Backup current thread and selected frame. */
2362 old_chain = make_cleanup_restore_current_thread ();
2364 iterate_over_threads (proceed_after_attach_callback, &pid);
2366 /* Restore selected ptid. */
2367 do_cleanups (old_chain);
2372 * Should save/restore the tty state since it might be that the
2373 * program to be debugged was started on this tty and it wants
2374 * the tty in some state other than what we want. If it's running
2375 * on another terminal or without a terminal, then saving and
2376 * restoring the tty state is a harmless no-op.
2377 * This only needs to be done if we are attaching to a process.
2380 /* attach_command --
2381 takes a program started up outside of gdb and ``attaches'' to it.
2382 This stops it cold in its tracks and allows us to start debugging it.
2383 and wait for the trace-trap that results from attaching. */
2386 attach_command_post_wait (char *args, int from_tty, int async_exec)
2389 char *full_exec_path = NULL;
2390 struct inferior *inferior;
2392 inferior = current_inferior ();
2393 inferior->control.stop_soon = NO_STOP_QUIETLY;
2395 /* If no exec file is yet known, try to determine it from the
2397 exec_file = (char *) get_exec_file (0);
2400 exec_file = target_pid_to_exec_file (ptid_get_pid (inferior_ptid));
2403 /* It's possible we don't have a full path, but rather just a
2404 filename. Some targets, such as HP-UX, don't provide the
2407 Attempt to qualify the filename against the source path.
2408 (If that fails, we'll just fall back on the original
2409 filename. Not much more we can do...) */
2411 if (!source_full_path_of (exec_file, &full_exec_path))
2412 full_exec_path = xstrdup (exec_file);
2414 exec_file_attach (full_exec_path, from_tty);
2415 symbol_file_add_main (full_exec_path, from_tty);
2420 reopen_exec_file ();
2424 /* Take any necessary post-attaching actions for this platform. */
2425 target_post_attach (ptid_get_pid (inferior_ptid));
2427 post_create_inferior (¤t_target, from_tty);
2431 /* The user requested an `attach&', so be sure to leave threads
2432 that didn't get a signal running. */
2434 /* Immediatelly resume all suspended threads of this inferior,
2435 and this inferior only. This should have no effect on
2436 already running threads. If a thread has been stopped with a
2437 signal, leave it be. */
2439 proceed_after_attach (inferior->pid);
2442 if (inferior_thread ()->suspend.stop_signal == GDB_SIGNAL_0)
2444 clear_proceed_status (0);
2445 proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT, 0);
2451 /* The user requested a plain `attach', so be sure to leave
2452 the inferior stopped. */
2454 if (target_can_async_p ())
2455 async_enable_stdin ();
2457 /* At least the current thread is already stopped. */
2459 /* In all-stop, by definition, all threads have to be already
2460 stopped at this point. In non-stop, however, although the
2461 selected thread is stopped, others may still be executing.
2462 Be sure to explicitly stop all threads of the process. This
2463 should have no effect on already stopped threads. */
2465 target_stop (pid_to_ptid (inferior->pid));
2467 /* Tell the user/frontend where we're stopped. */
2469 if (deprecated_attach_hook)
2470 deprecated_attach_hook ();
2474 struct attach_command_continuation_args
2482 attach_command_continuation (void *args, int err)
2484 struct attach_command_continuation_args *a = args;
2489 attach_command_post_wait (a->args, a->from_tty, a->async_exec);
2493 attach_command_continuation_free_args (void *args)
2495 struct attach_command_continuation_args *a = args;
2502 attach_command (char *args, int from_tty)
2505 struct target_ops *attach_target;
2507 dont_repeat (); /* Not for the faint of heart */
2509 if (gdbarch_has_global_solist (target_gdbarch ()))
2510 /* Don't complain if all processes share the same symbol
2513 else if (target_has_execution)
2515 if (query (_("A program is being debugged already. Kill it? ")))
2518 error (_("Not killed."));
2521 /* Clean up any leftovers from other runs. Some other things from
2522 this function should probably be moved into target_pre_inferior. */
2523 target_pre_inferior (from_tty);
2526 async_exec = strip_bg_char (&args);
2528 attach_target = find_attach_target ();
2530 prepare_execution_command (attach_target, async_exec);
2532 if (non_stop && !attach_target->to_supports_non_stop (attach_target))
2533 error (_("Cannot attach to this target in non-stop mode"));
2535 attach_target->to_attach (attach_target, args, from_tty);
2536 /* to_attach should push the target, so after this point we
2537 shouldn't refer to attach_target again. */
2538 attach_target = NULL;
2540 /* Set up the "saved terminal modes" of the inferior
2541 based on what modes we are starting it with. */
2542 target_terminal_init ();
2544 /* Install inferior's terminal modes. This may look like a no-op,
2545 as we've just saved them above, however, this does more than
2546 restore terminal settings:
2548 - installs a SIGINT handler that forwards SIGINT to the inferior.
2549 Otherwise a Ctrl-C pressed just while waiting for the initial
2550 stop would end up as a spurious Quit.
2552 - removes stdin from the event loop, which we need if attaching
2553 in the foreground, otherwise on targets that report an initial
2554 stop on attach (which are most) we'd process input/commands
2555 while we're in the event loop waiting for that stop. That is,
2556 before the attach continuation runs and the command is really
2558 target_terminal_inferior ();
2560 /* Set up execution context to know that we should return from
2561 wait_for_inferior as soon as the target reports a stop. */
2562 init_wait_for_inferior ();
2563 clear_proceed_status (0);
2567 /* If we find that the current thread isn't stopped, explicitly
2568 do so now, because we're going to install breakpoints and
2572 /* The user requested an `attach&'; stop just one thread. */
2573 target_stop (inferior_ptid);
2575 /* The user requested an `attach', so stop all threads of this
2577 target_stop (pid_to_ptid (ptid_get_pid (inferior_ptid)));
2580 /* Some system don't generate traps when attaching to inferior.
2581 E.g. Mach 3 or GNU hurd. */
2582 if (!target_attach_no_wait)
2584 struct inferior *inferior = current_inferior ();
2586 /* Careful here. See comments in inferior.h. Basically some
2587 OSes don't ignore SIGSTOPs on continue requests anymore. We
2588 need a way for handle_inferior_event to reset the stop_signal
2589 variable after an attach, and this is what
2590 STOP_QUIETLY_NO_SIGSTOP is for. */
2591 inferior->control.stop_soon = STOP_QUIETLY_NO_SIGSTOP;
2593 if (target_can_async_p ())
2595 /* sync_execution mode. Wait for stop. */
2596 struct attach_command_continuation_args *a;
2598 a = xmalloc (sizeof (*a));
2599 a->args = xstrdup (args);
2600 a->from_tty = from_tty;
2601 a->async_exec = async_exec;
2602 add_inferior_continuation (attach_command_continuation, a,
2603 attach_command_continuation_free_args);
2607 wait_for_inferior ();
2610 attach_command_post_wait (args, from_tty, async_exec);
2613 /* We had just found out that the target was already attached to an
2614 inferior. PTID points at a thread of this new inferior, that is
2615 the most likely to be stopped right now, but not necessarily so.
2616 The new inferior is assumed to be already added to the inferior
2617 list at this point. If LEAVE_RUNNING, then leave the threads of
2618 this inferior running, except those we've explicitly seen reported
2622 notice_new_inferior (ptid_t ptid, int leave_running, int from_tty)
2624 struct cleanup* old_chain;
2627 old_chain = make_cleanup (null_cleanup, NULL);
2629 /* If in non-stop, leave threads as running as they were. If
2630 they're stopped for some reason other than us telling it to, the
2631 target reports a signal != GDB_SIGNAL_0. We don't try to
2632 resume threads with such a stop signal. */
2633 async_exec = non_stop;
2635 if (!ptid_equal (inferior_ptid, null_ptid))
2636 make_cleanup_restore_current_thread ();
2638 switch_to_thread (ptid);
2640 /* When we "notice" a new inferior we need to do all the things we
2641 would normally do if we had just attached to it. */
2643 if (is_executing (inferior_ptid))
2645 struct inferior *inferior = current_inferior ();
2647 /* We're going to install breakpoints, and poke at memory,
2648 ensure that the inferior is stopped for a moment while we do
2650 target_stop (inferior_ptid);
2652 inferior->control.stop_soon = STOP_QUIETLY_REMOTE;
2654 /* Wait for stop before proceeding. */
2655 if (target_can_async_p ())
2657 struct attach_command_continuation_args *a;
2659 a = xmalloc (sizeof (*a));
2660 a->args = xstrdup ("");
2661 a->from_tty = from_tty;
2662 a->async_exec = async_exec;
2663 add_inferior_continuation (attach_command_continuation, a,
2664 attach_command_continuation_free_args);
2666 do_cleanups (old_chain);
2670 wait_for_inferior ();
2673 async_exec = leave_running;
2674 attach_command_post_wait ("" /* args */, from_tty, async_exec);
2676 do_cleanups (old_chain);
2681 * takes a program previously attached to and detaches it.
2682 * The program resumes execution and will no longer stop
2683 * on signals, etc. We better not have left any breakpoints
2684 * in the program or it'll die when it hits one. For this
2685 * to work, it may be necessary for the process to have been
2686 * previously attached. It *might* work if the program was
2687 * started via the normal ptrace (PTRACE_TRACEME).
2691 detach_command (char *args, int from_tty)
2693 dont_repeat (); /* Not for the faint of heart. */
2695 if (ptid_equal (inferior_ptid, null_ptid))
2696 error (_("The program is not being run."));
2698 query_if_trace_running (from_tty);
2700 disconnect_tracing ();
2702 target_detach (args, from_tty);
2704 /* If the solist is global across inferiors, don't clear it when we
2705 detach from a single inferior. */
2706 if (!gdbarch_has_global_solist (target_gdbarch ()))
2707 no_shared_libraries (NULL, from_tty);
2709 /* If we still have inferiors to debug, then don't mess with their
2711 if (!have_inferiors ())
2712 init_thread_list ();
2714 if (deprecated_detach_hook)
2715 deprecated_detach_hook ();
2718 /* Disconnect from the current target without resuming it (leaving it
2719 waiting for a debugger).
2721 We'd better not have left any breakpoints in the program or the
2722 next debugger will get confused. Currently only supported for some
2723 remote targets, since the normal attach mechanisms don't work on
2724 stopped processes on some native platforms (e.g. GNU/Linux). */
2727 disconnect_command (char *args, int from_tty)
2729 dont_repeat (); /* Not for the faint of heart. */
2730 query_if_trace_running (from_tty);
2731 disconnect_tracing ();
2732 target_disconnect (args, from_tty);
2733 no_shared_libraries (NULL, from_tty);
2734 init_thread_list ();
2735 if (deprecated_detach_hook)
2736 deprecated_detach_hook ();
2740 interrupt_target_1 (int all_threads)
2745 ptid = minus_one_ptid;
2747 ptid = inferior_ptid;
2750 /* Tag the thread as having been explicitly requested to stop, so
2751 other parts of gdb know not to resume this thread automatically,
2752 if it was stopped due to an internal event. Limit this to
2753 non-stop mode, as when debugging a multi-threaded application in
2754 all-stop mode, we will only get one stop event --- it's undefined
2755 which thread will report the event. */
2757 set_stop_requested (ptid, 1);
2761 Stop the execution of the target while running in async mode, in
2762 the backgound. In all-stop, stop the whole process. In non-stop
2763 mode, stop the current thread only by default, or stop all threads
2764 if the `-a' switch is used. */
2767 interrupt_command (char *args, int from_tty)
2769 if (target_can_async_p ())
2771 int all_threads = 0;
2773 dont_repeat (); /* Not for the faint of heart. */
2776 && strncmp (args, "-a", sizeof ("-a") - 1) == 0)
2779 if (!non_stop && all_threads)
2780 error (_("-a is meaningless in all-stop mode."));
2782 interrupt_target_1 (all_threads);
2787 print_float_info (struct ui_file *file,
2788 struct frame_info *frame, const char *args)
2790 struct gdbarch *gdbarch = get_frame_arch (frame);
2792 if (gdbarch_print_float_info_p (gdbarch))
2793 gdbarch_print_float_info (gdbarch, file, frame, args);
2797 int printed_something = 0;
2800 regnum < gdbarch_num_regs (gdbarch)
2801 + gdbarch_num_pseudo_regs (gdbarch);
2804 if (gdbarch_register_reggroup_p (gdbarch, regnum, float_reggroup))
2806 printed_something = 1;
2807 gdbarch_print_registers_info (gdbarch, file, frame, regnum, 1);
2810 if (!printed_something)
2811 fprintf_filtered (file, "No floating-point info "
2812 "available for this processor.\n");
2817 float_info (char *args, int from_tty)
2819 if (!target_has_registers)
2820 error (_("The program has no registers now."));
2822 print_float_info (gdb_stdout, get_selected_frame (NULL), args);
2826 unset_command (char *args, int from_tty)
2828 printf_filtered (_("\"unset\" must be followed by the "
2829 "name of an unset subcommand.\n"));
2830 help_list (unsetlist, "unset ", all_commands, gdb_stdout);
2833 /* Implement `info proc' family of commands. */
2836 info_proc_cmd_1 (char *args, enum info_proc_what what, int from_tty)
2838 struct gdbarch *gdbarch = get_current_arch ();
2840 if (!target_info_proc (args, what))
2842 if (gdbarch_info_proc_p (gdbarch))
2843 gdbarch_info_proc (gdbarch, args, what);
2845 error (_("Not supported on this target."));
2849 /* Implement `info proc' when given without any futher parameters. */
2852 info_proc_cmd (char *args, int from_tty)
2854 info_proc_cmd_1 (args, IP_MINIMAL, from_tty);
2857 /* Implement `info proc mappings'. */
2860 info_proc_cmd_mappings (char *args, int from_tty)
2862 info_proc_cmd_1 (args, IP_MAPPINGS, from_tty);
2865 /* Implement `info proc stat'. */
2868 info_proc_cmd_stat (char *args, int from_tty)
2870 info_proc_cmd_1 (args, IP_STAT, from_tty);
2873 /* Implement `info proc status'. */
2876 info_proc_cmd_status (char *args, int from_tty)
2878 info_proc_cmd_1 (args, IP_STATUS, from_tty);
2881 /* Implement `info proc cwd'. */
2884 info_proc_cmd_cwd (char *args, int from_tty)
2886 info_proc_cmd_1 (args, IP_CWD, from_tty);
2889 /* Implement `info proc cmdline'. */
2892 info_proc_cmd_cmdline (char *args, int from_tty)
2894 info_proc_cmd_1 (args, IP_CMDLINE, from_tty);
2897 /* Implement `info proc exe'. */
2900 info_proc_cmd_exe (char *args, int from_tty)
2902 info_proc_cmd_1 (args, IP_EXE, from_tty);
2905 /* Implement `info proc all'. */
2908 info_proc_cmd_all (char *args, int from_tty)
2910 info_proc_cmd_1 (args, IP_ALL, from_tty);
2914 _initialize_infcmd (void)
2916 static struct cmd_list_element *info_proc_cmdlist;
2917 struct cmd_list_element *c = NULL;
2918 const char *cmd_name;
2920 /* Add the filename of the terminal connected to inferior I/O. */
2921 add_setshow_filename_cmd ("inferior-tty", class_run,
2922 &inferior_io_terminal_scratch, _("\
2923 Set terminal for future runs of program being debugged."), _("\
2924 Show terminal for future runs of program being debugged."), _("\
2925 Usage: set inferior-tty /dev/pts/1"),
2926 set_inferior_tty_command,
2927 show_inferior_tty_command,
2928 &setlist, &showlist);
2929 add_com_alias ("tty", "set inferior-tty", class_alias, 0);
2932 add_setshow_string_noescape_cmd (cmd_name, class_run,
2933 &inferior_args_scratch, _("\
2934 Set argument list to give program being debugged when it is started."), _("\
2935 Show argument list to give program being debugged when it is started."), _("\
2936 Follow this command with any number of args, to be passed to the program."),
2939 &setlist, &showlist);
2940 c = lookup_cmd (&cmd_name, setlist, "", -1, 1);
2941 gdb_assert (c != NULL);
2942 set_cmd_completer (c, filename_completer);
2944 c = add_cmd ("environment", no_class, environment_info, _("\
2945 The environment to give the program, or one variable's value.\n\
2946 With an argument VAR, prints the value of environment variable VAR to\n\
2947 give the program being debugged. With no arguments, prints the entire\n\
2948 environment to be given to the program."), &showlist);
2949 set_cmd_completer (c, noop_completer);
2951 add_prefix_cmd ("unset", no_class, unset_command,
2952 _("Complement to certain \"set\" commands."),
2953 &unsetlist, "unset ", 0, &cmdlist);
2955 c = add_cmd ("environment", class_run, unset_environment_command, _("\
2956 Cancel environment variable VAR for the program.\n\
2957 This does not affect the program until the next \"run\" command."),
2959 set_cmd_completer (c, noop_completer);
2961 c = add_cmd ("environment", class_run, set_environment_command, _("\
2962 Set environment variable value to give the program.\n\
2963 Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\
2964 VALUES of environment variables are uninterpreted strings.\n\
2965 This does not affect the program until the next \"run\" command."),
2967 set_cmd_completer (c, noop_completer);
2969 c = add_com ("path", class_files, path_command, _("\
2970 Add directory DIR(s) to beginning of search path for object files.\n\
2971 $cwd in the path means the current working directory.\n\
2972 This path is equivalent to the $PATH shell variable. It is a list of\n\
2973 directories, separated by colons. These directories are searched to find\n\
2974 fully linked executable files and separately compiled object files as \
2976 set_cmd_completer (c, filename_completer);
2978 c = add_cmd ("paths", no_class, path_info, _("\
2979 Current search path for finding object files.\n\
2980 $cwd in the path means the current working directory.\n\
2981 This path is equivalent to the $PATH shell variable. It is a list of\n\
2982 directories, separated by colons. These directories are searched to find\n\
2983 fully linked executable files and separately compiled object files as \
2986 set_cmd_completer (c, noop_completer);
2988 add_prefix_cmd ("kill", class_run, kill_command,
2989 _("Kill execution of program being debugged."),
2990 &killlist, "kill ", 0, &cmdlist);
2992 add_com ("attach", class_run, attach_command, _("\
2993 Attach to a process or file outside of GDB.\n\
2994 This command attaches to another target, of the same type as your last\n\
2995 \"target\" command (\"info files\" will show your target stack).\n\
2996 The command may take as argument a process id or a device file.\n\
2997 For a process id, you must have permission to send the process a signal,\n\
2998 and it must have the same effective uid as the debugger.\n\
2999 When using \"attach\" with a process id, the debugger finds the\n\
3000 program running in the process, looking first in the current working\n\
3001 directory, or (if not found there) using the source file search path\n\
3002 (see the \"directory\" command). You can also use the \"file\" command\n\
3003 to specify the program, and to load its symbol table."));
3005 add_prefix_cmd ("detach", class_run, detach_command, _("\
3006 Detach a process or file previously attached.\n\
3007 If a process, it is no longer traced, and it continues its execution. If\n\
3008 you were debugging a file, the file is closed and gdb no longer accesses it."),
3009 &detachlist, "detach ", 0, &cmdlist);
3011 add_com ("disconnect", class_run, disconnect_command, _("\
3012 Disconnect from a target.\n\
3013 The target will wait for another debugger to connect. Not available for\n\
3016 c = add_com ("signal", class_run, signal_command, _("\
3017 Continue program with the specified signal.\n\
3018 Usage: signal SIGNAL\n\
3019 The SIGNAL argument is processed the same as the handle command.\n\
3021 An argument of \"0\" means continue the program without sending it a signal.\n\
3022 This is useful in cases where the program stopped because of a signal,\n\
3023 and you want to resume the program while discarding the signal."));
3024 set_cmd_completer (c, signal_completer);
3026 add_com ("stepi", class_run, stepi_command, _("\
3027 Step one instruction exactly.\n\
3029 Argument N means step N times (or till program stops for another \
3031 add_com_alias ("si", "stepi", class_alias, 0);
3033 add_com ("nexti", class_run, nexti_command, _("\
3034 Step one instruction, but proceed through subroutine calls.\n\
3036 Argument N means step N times (or till program stops for another \
3038 add_com_alias ("ni", "nexti", class_alias, 0);
3040 add_com ("finish", class_run, finish_command, _("\
3041 Execute until selected stack frame returns.\n\
3043 Upon return, the value returned is printed and put in the value history."));
3044 add_com_alias ("fin", "finish", class_run, 1);
3046 add_com ("next", class_run, next_command, _("\
3047 Step program, proceeding through subroutine calls.\n\
3049 Unlike \"step\", if the current source line calls a subroutine,\n\
3050 this command does not enter the subroutine, but instead steps over\n\
3051 the call, in effect treating it as a single source line."));
3052 add_com_alias ("n", "next", class_run, 1);
3054 add_com_alias ("S", "next", class_run, 1);
3056 add_com ("step", class_run, step_command, _("\
3057 Step program until it reaches a different source line.\n\
3059 Argument N means step N times (or till program stops for another \
3061 add_com_alias ("s", "step", class_run, 1);
3063 c = add_com ("until", class_run, until_command, _("\
3064 Execute until the program reaches a source line greater than the current\n\
3065 or a specified location (same args as break command) within the current \
3067 set_cmd_completer (c, location_completer);
3068 add_com_alias ("u", "until", class_run, 1);
3070 c = add_com ("advance", class_run, advance_command, _("\
3071 Continue the program up to the given location (same form as args for break \
3073 Execution will also stop upon exit from the current stack frame."));
3074 set_cmd_completer (c, location_completer);
3076 c = add_com ("jump", class_run, jump_command, _("\
3077 Continue program being debugged at specified line or address.\n\
3078 Usage: jump <location>\n\
3079 Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\
3080 for an address to start at."));
3081 set_cmd_completer (c, location_completer);
3082 add_com_alias ("j", "jump", class_run, 1);
3086 c = add_com ("go", class_run, go_command, _("\
3087 Usage: go <location>\n\
3088 Continue program being debugged, stopping at specified line or \n\
3090 Give as argument either LINENUM or *ADDR, where ADDR is an \n\
3091 expression for an address to start at.\n\
3092 This command is a combination of tbreak and jump."));
3093 set_cmd_completer (c, location_completer);
3097 add_com_alias ("g", "go", class_run, 1);
3099 add_com ("continue", class_run, continue_command, _("\
3100 Continue program being debugged, after signal or breakpoint.\n\
3101 Usage: continue [N]\n\
3102 If proceeding from breakpoint, a number N may be used as an argument,\n\
3103 which means to set the ignore count of that breakpoint to N - 1 (so that\n\
3104 the breakpoint won't break until the Nth time it is reached).\n\
3106 If non-stop mode is enabled, continue only the current thread,\n\
3107 otherwise all the threads in the program are continued. To \n\
3108 continue all stopped threads in non-stop mode, use the -a option.\n\
3109 Specifying -a and an ignore count simultaneously is an error."));
3110 add_com_alias ("c", "cont", class_run, 1);
3111 add_com_alias ("fg", "cont", class_run, 1);
3113 c = add_com ("run", class_run, run_command, _("\
3114 Start debugged program. You may specify arguments to give it.\n\
3115 Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\
3116 Input and output redirection with \">\", \"<\", or \">>\" are also \
3118 With no arguments, uses arguments last specified (with \"run\" \
3119 or \"set args\").\n\
3120 To cancel previous arguments and run with no arguments,\n\
3121 use \"set args\" without arguments."));
3122 set_cmd_completer (c, filename_completer);
3123 add_com_alias ("r", "run", class_run, 1);
3125 add_com ("R", class_run, run_no_args_command,
3126 _("Start debugged program with no arguments."));
3128 c = add_com ("start", class_run, start_command, _("\
3129 Run the debugged program until the beginning of the main procedure.\n\
3130 You may specify arguments to give to your program, just as with the\n\
3131 \"run\" command."));
3132 set_cmd_completer (c, filename_completer);
3134 add_com ("interrupt", class_run, interrupt_command,
3135 _("Interrupt the execution of the debugged program.\n\
3136 If non-stop mode is enabled, interrupt only the current thread,\n\
3137 otherwise all the threads in the program are stopped. To \n\
3138 interrupt all running threads in non-stop mode, use the -a option."));
3140 add_info ("registers", nofp_registers_info, _("\
3141 List of integer registers and their contents, for selected stack frame.\n\
3142 Register name as argument means describe only that register."));
3143 add_info_alias ("r", "registers", 1);
3146 add_com ("lr", class_info, nofp_registers_info, _("\
3147 List of integer registers and their contents, for selected stack frame.\n\
3148 Register name as argument means describe only that register."));
3149 add_info ("all-registers", all_registers_info, _("\
3150 List of all registers and their contents, for selected stack frame.\n\
3151 Register name as argument means describe only that register."));
3153 add_info ("program", program_info,
3154 _("Execution status of the program."));
3156 add_info ("float", float_info,
3157 _("Print the status of the floating point unit\n"));
3159 add_info ("vector", vector_info,
3160 _("Print the status of the vector unit\n"));
3162 add_prefix_cmd ("proc", class_info, info_proc_cmd,
3164 Show /proc process information about any running process.\n\
3165 Specify any process id, or use the program being debugged by default."),
3166 &info_proc_cmdlist, "info proc ",
3167 1/*allow-unknown*/, &infolist);
3169 add_cmd ("mappings", class_info, info_proc_cmd_mappings, _("\
3170 List of mapped memory regions."),
3171 &info_proc_cmdlist);
3173 add_cmd ("stat", class_info, info_proc_cmd_stat, _("\
3174 List process info from /proc/PID/stat."),
3175 &info_proc_cmdlist);
3177 add_cmd ("status", class_info, info_proc_cmd_status, _("\
3178 List process info from /proc/PID/status."),
3179 &info_proc_cmdlist);
3181 add_cmd ("cwd", class_info, info_proc_cmd_cwd, _("\
3182 List current working directory of the process."),
3183 &info_proc_cmdlist);
3185 add_cmd ("cmdline", class_info, info_proc_cmd_cmdline, _("\
3186 List command line arguments of the process."),
3187 &info_proc_cmdlist);
3189 add_cmd ("exe", class_info, info_proc_cmd_exe, _("\
3190 List absolute filename for executable of the process."),
3191 &info_proc_cmdlist);
3193 add_cmd ("all", class_info, info_proc_cmd_all, _("\
3194 List all available /proc info."),
3195 &info_proc_cmdlist);