1 /* Memory-access and commands for "inferior" process, for GDB.
3 Copyright (C) 1986-2012 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
21 #include "arch-utils.h"
23 #include "gdb_string.h"
37 #include "completer.h"
39 #include "event-top.h"
40 #include "parser-defs.h"
42 #include "reggroups.h"
46 #include "gdb_assert.h"
48 #include "target-descriptions.h"
49 #include "user-regs.h"
50 #include "exceptions.h"
51 #include "cli/cli-decode.h"
52 #include "gdbthread.h"
54 #include "inline-frame.h"
55 #include "tracepoint.h"
57 #include "continuations.h"
60 /* Functions exported for general use, in inferior.h: */
62 void all_registers_info (char *, int);
64 void registers_info (char *, int);
66 void nexti_command (char *, int);
68 void stepi_command (char *, int);
70 void continue_command (char *, int);
72 void interrupt_target_command (char *args, int from_tty);
74 /* Local functions: */
76 static void nofp_registers_info (char *, int);
78 static void print_return_value (struct type *func_type,
79 struct type *value_type);
81 static void until_next_command (int);
83 static void until_command (char *, int);
85 static void path_info (char *, int);
87 static void path_command (char *, int);
89 static void unset_command (char *, int);
91 static void float_info (char *, int);
93 static void disconnect_command (char *, int);
95 static void unset_environment_command (char *, int);
97 static void set_environment_command (char *, int);
99 static void environment_info (char *, int);
101 static void program_info (char *, int);
103 static void finish_command (char *, int);
105 static void signal_command (char *, int);
107 static void jump_command (char *, int);
109 static void step_1 (int, int, char *);
110 static void step_once (int skip_subroutines, int single_inst,
111 int count, int thread);
113 static void next_command (char *, int);
115 static void step_command (char *, int);
117 static void run_command (char *, int);
119 static void run_no_args_command (char *args, int from_tty);
121 static void go_command (char *line_no, int from_tty);
123 static int strip_bg_char (char **);
125 void _initialize_infcmd (void);
127 #define ERROR_NO_INFERIOR \
128 if (!target_has_execution) error (_("The program is not being run."));
130 /* Scratch area where string containing arguments to give to the
131 program will be stored by 'set args'. As soon as anything is
132 stored, notice_args_set will move it into per-inferior storage.
133 Arguments are separated by spaces. Empty string (pointer to '\0')
136 static char *inferior_args_scratch;
138 /* Scratch area where 'set inferior-tty' will store user-provided value.
139 We'll immediate copy it into per-inferior storage. */
141 static char *inferior_io_terminal_scratch;
143 /* Pid of our debugged inferior, or 0 if no inferior now.
144 Since various parts of infrun.c test this to see whether there is a program
145 being debugged it should be nonzero (currently 3 is used) for remote
148 ptid_t inferior_ptid;
150 /* Address at which inferior stopped. */
154 /* Flag indicating that a command has proceeded the inferior past the
155 current breakpoint. */
157 int breakpoint_proceeded;
159 /* Nonzero if stopped due to completion of a stack dummy routine. */
161 enum stop_stack_kind stop_stack_dummy;
163 /* Nonzero if stopped due to a random (unexpected) signal in inferior
166 int stopped_by_random_signal;
169 /* Accessor routines. */
171 /* Set the io terminal for the current inferior. Ownership of
172 TERMINAL_NAME is not transferred. */
175 set_inferior_io_terminal (const char *terminal_name)
177 xfree (current_inferior ()->terminal);
178 current_inferior ()->terminal = terminal_name ? xstrdup (terminal_name) : 0;
182 get_inferior_io_terminal (void)
184 return current_inferior ()->terminal;
188 set_inferior_tty_command (char *args, int from_tty,
189 struct cmd_list_element *c)
191 /* CLI has assigned the user-provided value to inferior_io_terminal_scratch.
192 Now route it to current inferior. */
193 set_inferior_io_terminal (inferior_io_terminal_scratch);
197 show_inferior_tty_command (struct ui_file *file, int from_tty,
198 struct cmd_list_element *c, const char *value)
200 /* Note that we ignore the passed-in value in favor of computing it
202 const char *inferior_io_terminal = get_inferior_io_terminal ();
204 if (inferior_io_terminal == NULL)
205 inferior_io_terminal = "";
206 fprintf_filtered (gdb_stdout,
207 _("Terminal for future runs of program being debugged "
208 "is \"%s\".\n"), inferior_io_terminal);
212 get_inferior_args (void)
214 if (current_inferior ()->argc != 0)
218 n = construct_inferior_arguments (current_inferior ()->argc,
219 current_inferior ()->argv);
220 set_inferior_args (n);
224 if (current_inferior ()->args == NULL)
225 current_inferior ()->args = xstrdup ("");
227 return current_inferior ()->args;
230 /* Set the arguments for the current inferior. Ownership of
231 NEWARGS is not transferred. */
234 set_inferior_args (char *newargs)
236 xfree (current_inferior ()->args);
237 current_inferior ()->args = newargs ? xstrdup (newargs) : NULL;
238 current_inferior ()->argc = 0;
239 current_inferior ()->argv = 0;
243 set_inferior_args_vector (int argc, char **argv)
245 current_inferior ()->argc = argc;
246 current_inferior ()->argv = argv;
249 /* Notice when `set args' is run. */
251 set_args_command (char *args, int from_tty, struct cmd_list_element *c)
253 /* CLI has assigned the user-provided value to inferior_args_scratch.
254 Now route it to current inferior. */
255 set_inferior_args (inferior_args_scratch);
258 /* Notice when `show args' is run. */
260 show_args_command (struct ui_file *file, int from_tty,
261 struct cmd_list_element *c, const char *value)
263 /* Note that we ignore the passed-in value in favor of computing it
265 deprecated_show_value_hack (file, from_tty, c, get_inferior_args ());
269 /* Compute command-line string given argument vector. This does the
270 same shell processing as fork_inferior. */
272 construct_inferior_arguments (int argc, char **argv)
276 if (STARTUP_WITH_SHELL)
278 /* This holds all the characters considered special to the
279 typical Unix shells. We include `^' because the SunOS
280 /bin/sh treats it as a synonym for `|'. */
281 char *special = "\"!#$&*()\\|[]{}<>?'\"`~^; \t\n";
286 /* We over-compute the size. It shouldn't matter. */
287 for (i = 0; i < argc; ++i)
288 length += 3 * strlen (argv[i]) + 1 + 2 * (argv[i][0] == '\0');
290 result = (char *) xmalloc (length);
293 for (i = 0; i < argc; ++i)
298 /* Need to handle empty arguments specially. */
299 if (argv[i][0] == '\0')
306 for (cp = argv[i]; *cp; ++cp)
310 /* A newline cannot be quoted with a backslash (it
311 just disappears), only by putting it inside
319 if (strchr (special, *cp) != NULL)
330 /* In this case we can't handle arguments that contain spaces,
331 tabs, or newlines -- see breakup_args(). */
335 for (i = 0; i < argc; ++i)
337 char *cp = strchr (argv[i], ' ');
339 cp = strchr (argv[i], '\t');
341 cp = strchr (argv[i], '\n');
343 error (_("can't handle command-line "
344 "argument containing whitespace"));
345 length += strlen (argv[i]) + 1;
348 result = (char *) xmalloc (length);
350 for (i = 0; i < argc; ++i)
353 strcat (result, " ");
354 strcat (result, argv[i]);
362 /* This function detects whether or not a '&' character (indicating
363 background execution) has been added as *the last* of the arguments ARGS
364 of a command. If it has, it removes it and returns 1. Otherwise it
365 does nothing and returns 0. */
367 strip_bg_char (char **args)
371 p = strchr (*args, '&');
375 if (p == (*args + strlen (*args) - 1))
377 if (strlen (*args) > 1)
381 while (*p == ' ' || *p == '\t');
392 /* Common actions to take after creating any sort of inferior, by any
393 means (running, attaching, connecting, et cetera). The target
394 should be stopped. */
397 post_create_inferior (struct target_ops *target, int from_tty)
399 volatile struct gdb_exception ex;
401 /* Be sure we own the terminal in case write operations are performed. */
402 target_terminal_ours ();
404 /* If the target hasn't taken care of this already, do it now.
405 Targets which need to access registers during to_open,
406 to_create_inferior, or to_attach should do it earlier; but many
408 target_find_description ();
410 /* Now that we know the register layout, retrieve current PC. But
411 if the PC is unavailable (e.g., we're opening a core file with
412 missing registers info), ignore it. */
414 TRY_CATCH (ex, RETURN_MASK_ERROR)
416 stop_pc = regcache_read_pc (get_current_regcache ());
418 if (ex.reason < 0 && ex.error != NOT_AVAILABLE_ERROR)
419 throw_exception (ex);
423 const unsigned solib_add_generation
424 = current_program_space->solib_add_generation;
426 /* Create the hooks to handle shared library load and unload
428 #ifdef SOLIB_CREATE_INFERIOR_HOOK
429 SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid));
431 solib_create_inferior_hook (from_tty);
434 if (current_program_space->solib_add_generation == solib_add_generation)
436 /* The platform-specific hook should load initial shared libraries,
437 but didn't. FROM_TTY will be incorrectly 0 but such solib
438 targets should be fixed anyway. Call it only after the solib
439 target has been initialized by solib_create_inferior_hook. */
442 warning (_("platform-specific solib_create_inferior_hook did "
443 "not load initial shared libraries."));
445 /* If the solist is global across processes, there's no need to
447 if (!gdbarch_has_global_solist (target_gdbarch))
450 SOLIB_ADD (NULL, 0, target, auto_solib_add);
452 solib_add (NULL, 0, target, auto_solib_add);
458 /* If the user sets watchpoints before execution having started,
459 then she gets software watchpoints, because GDB can't know which
460 target will end up being pushed, or if it supports hardware
461 watchpoints or not. breakpoint_re_set takes care of promoting
462 watchpoints to hardware watchpoints if possible, however, if this
463 new inferior doesn't load shared libraries or we don't pull in
464 symbols from any other source on this target/arch,
465 breakpoint_re_set is never called. Call it now so that software
466 watchpoints get a chance to be promoted to hardware watchpoints
467 if the now pushed target supports hardware watchpoints. */
468 breakpoint_re_set ();
470 observer_notify_inferior_created (target, from_tty);
473 /* Kill the inferior if already running. This function is designed
474 to be called when we are about to start the execution of the program
475 from the beginning. Ask the user to confirm that he wants to restart
476 the program being debugged when FROM_TTY is non-null. */
479 kill_if_already_running (int from_tty)
481 if (! ptid_equal (inferior_ptid, null_ptid) && target_has_execution)
483 /* Bail out before killing the program if we will not be able to
485 target_require_runnable ();
488 && !query (_("The program being debugged has been started already.\n\
489 Start it from the beginning? ")))
490 error (_("Program not restarted."));
495 /* Implement the "run" command. If TBREAK_AT_MAIN is set, then insert
496 a temporary breakpoint at the begining of the main program before
497 running the program. */
500 run_command_1 (char *args, int from_tty, int tbreak_at_main)
503 struct cleanup *old_chain;
505 struct ui_out *uiout = current_uiout;
509 kill_if_already_running (from_tty);
511 init_wait_for_inferior ();
512 clear_breakpoint_hit_counts ();
514 /* Clean up any leftovers from other runs. Some other things from
515 this function should probably be moved into target_pre_inferior. */
516 target_pre_inferior (from_tty);
518 /* The comment here used to read, "The exec file is re-read every
519 time we do a generic_mourn_inferior, so we just have to worry
520 about the symbol file." The `generic_mourn_inferior' function
521 gets called whenever the program exits. However, suppose the
522 program exits, and *then* the executable file changes? We need
523 to check again here. Since reopen_exec_file doesn't do anything
524 if the timestamp hasn't changed, I don't see the harm. */
528 /* Insert the temporary breakpoint if a location was specified. */
530 tbreak_command (main_name (), 0);
532 exec_file = (char *) get_exec_file (0);
534 if (non_stop && !target_supports_non_stop ())
535 error (_("The target does not support running in non-stop mode."));
537 /* We keep symbols from add-symbol-file, on the grounds that the
538 user might want to add some symbols before running the program
539 (right?). But sometimes (dynamic loading where the user manually
540 introduces the new symbols with add-symbol-file), the code which
541 the symbols describe does not persist between runs. Currently
542 the user has to manually nuke all symbols between runs if they
543 want them to go away (PR 2207). This is probably reasonable. */
547 if (target_can_async_p ())
548 async_disable_stdin ();
552 int async_exec = strip_bg_char (&args);
554 /* If we get a request for running in the bg but the target
555 doesn't support it, error out. */
556 if (async_exec && !target_can_async_p ())
557 error (_("Asynchronous execution not supported on this target."));
559 /* If we don't get a request of running in the bg, then we need
560 to simulate synchronous (fg) execution. */
561 if (!async_exec && target_can_async_p ())
563 /* Simulate synchronous execution. */
564 async_disable_stdin ();
567 /* If there were other args, beside '&', process them. */
569 set_inferior_args (args);
574 ui_out_field_string (uiout, NULL, "Starting program");
575 ui_out_text (uiout, ": ");
577 ui_out_field_string (uiout, "execfile", exec_file);
578 ui_out_spaces (uiout, 1);
579 /* We call get_inferior_args() because we might need to compute
581 ui_out_field_string (uiout, "infargs", get_inferior_args ());
582 ui_out_text (uiout, "\n");
583 ui_out_flush (uiout);
586 /* We call get_inferior_args() because we might need to compute
588 target_create_inferior (exec_file, get_inferior_args (),
589 environ_vector (current_inferior ()->environment),
592 /* We're starting off a new process. When we get out of here, in
593 non-stop mode, finish the state of all threads of that process,
594 but leave other threads alone, as they may be stopped in internal
595 events --- the frontend shouldn't see them as stopped. In
596 all-stop, always finish the state of all threads, as we may be
597 resuming more than just the new process. */
599 ptid = pid_to_ptid (ptid_get_pid (inferior_ptid));
601 ptid = minus_one_ptid;
602 old_chain = make_cleanup (finish_thread_state_cleanup, &ptid);
604 /* Pass zero for FROM_TTY, because at this point the "run" command
605 has done its thing; now we are setting up the running program. */
606 post_create_inferior (¤t_target, 0);
608 /* Start the target running. Do not use -1 continuation as it would skip
609 breakpoint right at the entry point. */
610 proceed (regcache_read_pc (get_current_regcache ()), TARGET_SIGNAL_0, 0);
612 /* Since there was no error, there's no need to finish the thread
614 discard_cleanups (old_chain);
618 run_command (char *args, int from_tty)
620 run_command_1 (args, from_tty, 0);
624 run_no_args_command (char *args, int from_tty)
626 set_inferior_args ("");
630 /* Start the execution of the program up until the beginning of the main
634 start_command (char *args, int from_tty)
636 /* Some languages such as Ada need to search inside the program
637 minimal symbols for the location where to put the temporary
638 breakpoint before starting. */
639 if (!have_minimal_symbols ())
640 error (_("No symbol table loaded. Use the \"file\" command."));
642 /* Run the program until reaching the main procedure... */
643 run_command_1 (args, from_tty, 1);
647 proceed_thread_callback (struct thread_info *thread, void *arg)
649 /* We go through all threads individually instead of compressing
650 into a single target `resume_all' request, because some threads
651 may be stopped in internal breakpoints/events, or stopped waiting
652 for its turn in the displaced stepping queue (that is, they are
653 running && !executing). The target side has no idea about why
654 the thread is stopped, so a `resume_all' command would resume too
655 much. If/when GDB gains a way to tell the target `hold this
656 thread stopped until I say otherwise', then we can optimize
658 if (!is_stopped (thread->ptid))
661 switch_to_thread (thread->ptid);
662 clear_proceed_status ();
663 proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0);
668 ensure_valid_thread (void)
670 if (ptid_equal (inferior_ptid, null_ptid)
671 || is_exited (inferior_ptid))
672 error (_("Cannot execute this command without a live selected thread."));
675 /* If the user is looking at trace frames, any resumption of execution
676 is likely to mix up recorded and live target data. So simply
677 disallow those commands. */
680 ensure_not_tfind_mode (void)
682 if (get_traceframe_number () >= 0)
683 error (_("Cannot execute this command while looking at trace frames."));
687 continue_1 (int all_threads)
690 ensure_not_tfind_mode ();
692 if (non_stop && all_threads)
694 /* Don't error out if the current thread is running, because
695 there may be other stopped threads. */
696 struct cleanup *old_chain;
698 /* Backup current thread and selected frame. */
699 old_chain = make_cleanup_restore_current_thread ();
701 iterate_over_threads (proceed_thread_callback, NULL);
703 /* Restore selected ptid. */
704 do_cleanups (old_chain);
708 ensure_valid_thread ();
709 ensure_not_running ();
710 clear_proceed_status ();
711 proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0);
715 /* continue [-a] [proceed-count] [&] */
717 continue_command (char *args, int from_tty)
723 /* Find out whether we must run in the background. */
725 async_exec = strip_bg_char (&args);
727 /* If we must run in the background, but the target can't do it,
729 if (async_exec && !target_can_async_p ())
730 error (_("Asynchronous execution not supported on this target."));
732 /* If we are not asked to run in the bg, then prepare to run in the
733 foreground, synchronously. */
734 if (!async_exec && target_can_async_p ())
736 /* Simulate synchronous execution. */
737 async_disable_stdin ();
742 if (strncmp (args, "-a", sizeof ("-a") - 1) == 0)
745 args += sizeof ("-a") - 1;
751 if (!non_stop && all_threads)
752 error (_("`-a' is meaningless in all-stop mode."));
754 if (args != NULL && all_threads)
755 error (_("Can't resume all threads and specify "
756 "proceed count simultaneously."));
758 /* If we have an argument left, set proceed count of breakpoint we
765 struct thread_info *tp;
768 tp = find_thread_ptid (inferior_ptid);
772 struct target_waitstatus ws;
774 get_last_target_status (&last_ptid, &ws);
775 tp = find_thread_ptid (last_ptid);
778 bs = tp->control.stop_bpstat;
780 while ((stat = bpstat_num (&bs, &num)) != 0)
783 set_ignore_count (num,
784 parse_and_eval_long (args) - 1,
786 /* set_ignore_count prints a message ending with a period.
787 So print two spaces before "Continuing.". */
789 printf_filtered (" ");
793 if (!stopped && from_tty)
796 ("Not stopped at any breakpoint; argument ignored.\n");
801 printf_filtered (_("Continuing.\n"));
803 continue_1 (all_threads);
806 /* Record the starting point of a "step" or "next" command. */
809 set_step_frame (void)
811 struct symtab_and_line sal;
813 find_frame_sal (get_current_frame (), &sal);
814 set_step_info (get_current_frame (), sal);
817 /* Step until outside of current statement. */
820 step_command (char *count_string, int from_tty)
822 step_1 (0, 0, count_string);
825 /* Likewise, but skip over subroutine calls as if single instructions. */
828 next_command (char *count_string, int from_tty)
830 step_1 (1, 0, count_string);
833 /* Likewise, but step only one instruction. */
836 stepi_command (char *count_string, int from_tty)
838 step_1 (0, 1, count_string);
842 nexti_command (char *count_string, int from_tty)
844 step_1 (1, 1, count_string);
848 delete_longjmp_breakpoint_cleanup (void *arg)
850 int thread = * (int *) arg;
851 delete_longjmp_breakpoint (thread);
855 step_1 (int skip_subroutines, int single_inst, char *count_string)
858 struct cleanup *cleanups = make_cleanup (null_cleanup, NULL);
863 ensure_not_tfind_mode ();
864 ensure_valid_thread ();
865 ensure_not_running ();
868 async_exec = strip_bg_char (&count_string);
870 /* If we get a request for running in the bg but the target
871 doesn't support it, error out. */
872 if (async_exec && !target_can_async_p ())
873 error (_("Asynchronous execution not supported on this target."));
875 /* If we don't get a request of running in the bg, then we need
876 to simulate synchronous (fg) execution. */
877 if (!async_exec && target_can_async_p ())
879 /* Simulate synchronous execution. */
880 async_disable_stdin ();
883 count = count_string ? parse_and_eval_long (count_string) : 1;
885 if (!single_inst || skip_subroutines) /* Leave si command alone. */
887 struct thread_info *tp = inferior_thread ();
889 if (in_thread_list (inferior_ptid))
890 thread = pid_to_thread_id (inferior_ptid);
892 set_longjmp_breakpoint (tp, get_frame_id (get_current_frame ()));
894 make_cleanup (delete_longjmp_breakpoint_cleanup, &thread);
897 /* In synchronous case, all is well; each step_once call will step once. */
898 if (!target_can_async_p ())
900 for (; count > 0; count--)
902 step_once (skip_subroutines, single_inst, count, thread);
904 if (!target_has_execution)
908 struct thread_info *tp = inferior_thread ();
910 if (!tp->control.stop_step || !tp->step_multi)
912 /* If we stopped for some reason that is not stepping
913 there are no further steps to make. */
920 do_cleanups (cleanups);
924 /* In the case of an asynchronous target things get complicated;
925 do only one step for now, before returning control to the
926 event loop. Let the continuation figure out how many other
927 steps we need to do, and handle them one at the time, through
929 step_once (skip_subroutines, single_inst, count, thread);
931 /* We are running, and the continuation is installed. It will
932 disable the longjmp breakpoint as appropriate. */
933 discard_cleanups (cleanups);
937 struct step_1_continuation_args
940 int skip_subroutines;
945 /* Called after we are done with one step operation, to check whether
946 we need to step again, before we print the prompt and return control
947 to the user. If count is > 1, we will need to do one more call to
948 proceed(), via step_once(). Basically it is like step_once and
949 step_1_continuation are co-recursive. */
951 step_1_continuation (void *args, int err)
953 struct step_1_continuation_args *a = args;
955 if (target_has_execution)
957 struct thread_info *tp;
959 tp = inferior_thread ();
961 && tp->step_multi && tp->control.stop_step)
963 /* There are more steps to make, and we did stop due to
964 ending a stepping range. Do another step. */
965 step_once (a->skip_subroutines, a->single_inst,
966 a->count - 1, a->thread);
972 /* We either hit an error, or stopped for some reason that is
973 not stepping, or there are no further steps to make.
975 if (!a->single_inst || a->skip_subroutines)
976 delete_longjmp_breakpoint (a->thread);
979 /* Do just one step operation. This is useful to implement the 'step
980 n' kind of commands. In case of asynchronous targets, we will have
981 to set up a continuation to be done after the target stops (after
982 this one step). For synch targets, the caller handles further
986 step_once (int skip_subroutines, int single_inst, int count, int thread)
988 struct frame_info *frame = get_current_frame ();
992 /* Don't assume THREAD is a valid thread id. It is set to -1 if
993 the longjmp breakpoint was not required. Use the
994 INFERIOR_PTID thread instead, which is the same thread when
996 struct thread_info *tp = inferior_thread ();
998 clear_proceed_status ();
1005 /* Step at an inlined function behaves like "down". */
1006 if (!skip_subroutines && !single_inst
1007 && inline_skipped_frames (inferior_ptid))
1011 /* Pretend that we've ran. */
1012 resume_ptid = user_visible_resume_ptid (1);
1013 set_running (resume_ptid, 1);
1015 step_into_inline_frame (inferior_ptid);
1017 step_once (skip_subroutines, single_inst, count - 1, thread);
1020 /* Pretend that we've stopped. */
1023 if (target_can_async_p ())
1024 inferior_event_handler (INF_EXEC_COMPLETE, NULL);
1029 pc = get_frame_pc (frame);
1030 find_pc_line_pc_range (pc,
1031 &tp->control.step_range_start,
1032 &tp->control.step_range_end);
1034 /* If we have no line info, switch to stepi mode. */
1035 if (tp->control.step_range_end == 0 && step_stop_if_no_debug)
1036 tp->control.step_range_start = tp->control.step_range_end = 1;
1037 else if (tp->control.step_range_end == 0)
1041 if (find_pc_partial_function (pc, &name,
1042 &tp->control.step_range_start,
1043 &tp->control.step_range_end) == 0)
1044 error (_("Cannot find bounds of current function"));
1046 target_terminal_ours ();
1047 printf_filtered (_("Single stepping until exit from function %s,"
1048 "\nwhich has no line number information.\n"),
1054 /* Say we are stepping, but stop after one insn whatever it does. */
1055 tp->control.step_range_start = tp->control.step_range_end = 1;
1056 if (!skip_subroutines)
1058 Don't step over function calls, not even to functions lacking
1060 tp->control.step_over_calls = STEP_OVER_NONE;
1063 if (skip_subroutines)
1064 tp->control.step_over_calls = STEP_OVER_ALL;
1066 tp->step_multi = (count > 1);
1067 proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 1);
1069 /* For async targets, register a continuation to do any
1070 additional steps. For sync targets, the caller will handle
1071 further stepping. */
1072 if (target_can_async_p ())
1074 struct step_1_continuation_args *args;
1076 args = xmalloc (sizeof (*args));
1077 args->skip_subroutines = skip_subroutines;
1078 args->single_inst = single_inst;
1079 args->count = count;
1080 args->thread = thread;
1082 add_intermediate_continuation (tp, step_1_continuation, args, xfree);
1088 /* Continue program at specified address. */
1091 jump_command (char *arg, int from_tty)
1093 struct gdbarch *gdbarch = get_current_arch ();
1095 struct symtabs_and_lines sals;
1096 struct symtab_and_line sal;
1102 ensure_not_tfind_mode ();
1103 ensure_valid_thread ();
1104 ensure_not_running ();
1106 /* Find out whether we must run in the background. */
1108 async_exec = strip_bg_char (&arg);
1110 /* If we must run in the background, but the target can't do it,
1112 if (async_exec && !target_can_async_p ())
1113 error (_("Asynchronous execution not supported on this target."));
1116 error_no_arg (_("starting address"));
1118 sals = decode_line_spec_1 (arg, DECODE_LINE_FUNFIRSTLINE);
1119 if (sals.nelts != 1)
1121 error (_("Unreasonable jump request"));
1127 if (sal.symtab == 0 && sal.pc == 0)
1128 error (_("No source file has been specified."));
1130 resolve_sal_pc (&sal); /* May error out. */
1132 /* See if we are trying to jump to another function. */
1133 fn = get_frame_function (get_current_frame ());
1134 sfn = find_pc_function (sal.pc);
1135 if (fn != NULL && sfn != fn)
1137 if (!query (_("Line %d is not in `%s'. Jump anyway? "), sal.line,
1138 SYMBOL_PRINT_NAME (fn)))
1140 error (_("Not confirmed."));
1147 fixup_symbol_section (sfn, 0);
1148 if (section_is_overlay (SYMBOL_OBJ_SECTION (sfn)) &&
1149 !section_is_mapped (SYMBOL_OBJ_SECTION (sfn)))
1151 if (!query (_("WARNING!!! Destination is in "
1152 "unmapped overlay! Jump anyway? ")))
1154 error (_("Not confirmed."));
1164 printf_filtered (_("Continuing at "));
1165 fputs_filtered (paddress (gdbarch, addr), gdb_stdout);
1166 printf_filtered (".\n");
1169 /* If we are not asked to run in the bg, then prepare to run in the
1170 foreground, synchronously. */
1171 if (!async_exec && target_can_async_p ())
1173 /* Simulate synchronous execution. */
1174 async_disable_stdin ();
1177 clear_proceed_status ();
1178 proceed (addr, TARGET_SIGNAL_0, 0);
1182 /* Go to line or address in current procedure. */
1184 go_command (char *line_no, int from_tty)
1186 if (line_no == (char *) NULL || !*line_no)
1187 printf_filtered (_("Usage: go <location>\n"));
1190 tbreak_command (line_no, from_tty);
1191 jump_command (line_no, from_tty);
1196 /* Continue program giving it specified signal. */
1199 signal_command (char *signum_exp, int from_tty)
1201 enum target_signal oursig;
1204 dont_repeat (); /* Too dangerous. */
1206 ensure_not_tfind_mode ();
1207 ensure_valid_thread ();
1208 ensure_not_running ();
1210 /* Find out whether we must run in the background. */
1211 if (signum_exp != NULL)
1212 async_exec = strip_bg_char (&signum_exp);
1214 /* If we must run in the background, but the target can't do it,
1216 if (async_exec && !target_can_async_p ())
1217 error (_("Asynchronous execution not supported on this target."));
1219 /* If we are not asked to run in the bg, then prepare to run in the
1220 foreground, synchronously. */
1221 if (!async_exec && target_can_async_p ())
1223 /* Simulate synchronous execution. */
1224 async_disable_stdin ();
1228 error_no_arg (_("signal number"));
1230 /* It would be even slicker to make signal names be valid expressions,
1231 (the type could be "enum $signal" or some such), then the user could
1232 assign them to convenience variables. */
1233 oursig = target_signal_from_name (signum_exp);
1235 if (oursig == TARGET_SIGNAL_UNKNOWN)
1237 /* No, try numeric. */
1238 int num = parse_and_eval_long (signum_exp);
1241 oursig = TARGET_SIGNAL_0;
1243 oursig = target_signal_from_command (num);
1248 if (oursig == TARGET_SIGNAL_0)
1249 printf_filtered (_("Continuing with no signal.\n"));
1251 printf_filtered (_("Continuing with signal %s.\n"),
1252 target_signal_to_name (oursig));
1255 clear_proceed_status ();
1256 proceed ((CORE_ADDR) -1, oursig, 0);
1259 /* Continuation args to be passed to the "until" command
1261 struct until_next_continuation_args
1263 /* The thread that was current when the command was executed. */
1267 /* A continuation callback for until_next_command. */
1270 until_next_continuation (void *arg, int err)
1272 struct until_next_continuation_args *a = arg;
1274 delete_longjmp_breakpoint (a->thread);
1277 /* Proceed until we reach a different source line with pc greater than
1278 our current one or exit the function. We skip calls in both cases.
1280 Note that eventually this command should probably be changed so
1281 that only source lines are printed out when we hit the breakpoint
1282 we set. This may involve changes to wait_for_inferior and the
1283 proceed status code. */
1286 until_next_command (int from_tty)
1288 struct frame_info *frame;
1290 struct symbol *func;
1291 struct symtab_and_line sal;
1292 struct thread_info *tp = inferior_thread ();
1293 int thread = tp->num;
1294 struct cleanup *old_chain;
1296 clear_proceed_status ();
1299 frame = get_current_frame ();
1301 /* Step until either exited from this function or greater
1302 than the current line (if in symbolic section) or pc (if
1305 pc = get_frame_pc (frame);
1306 func = find_pc_function (pc);
1310 struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (pc);
1312 if (msymbol == NULL)
1313 error (_("Execution is not within a known function."));
1315 tp->control.step_range_start = SYMBOL_VALUE_ADDRESS (msymbol);
1316 tp->control.step_range_end = pc;
1320 sal = find_pc_line (pc, 0);
1322 tp->control.step_range_start = BLOCK_START (SYMBOL_BLOCK_VALUE (func));
1323 tp->control.step_range_end = sal.end;
1326 tp->control.step_over_calls = STEP_OVER_ALL;
1328 tp->step_multi = 0; /* Only one call to proceed */
1330 set_longjmp_breakpoint (tp, get_frame_id (frame));
1331 old_chain = make_cleanup (delete_longjmp_breakpoint_cleanup, &thread);
1333 proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 1);
1335 if (target_can_async_p () && is_running (inferior_ptid))
1337 struct until_next_continuation_args *cont_args;
1339 discard_cleanups (old_chain);
1340 cont_args = XNEW (struct until_next_continuation_args);
1341 cont_args->thread = inferior_thread ()->num;
1343 add_continuation (tp, until_next_continuation, cont_args, xfree);
1346 do_cleanups (old_chain);
1350 until_command (char *arg, int from_tty)
1355 ensure_not_tfind_mode ();
1356 ensure_valid_thread ();
1357 ensure_not_running ();
1359 /* Find out whether we must run in the background. */
1361 async_exec = strip_bg_char (&arg);
1363 /* If we must run in the background, but the target can't do it,
1365 if (async_exec && !target_can_async_p ())
1366 error (_("Asynchronous execution not supported on this target."));
1368 /* If we are not asked to run in the bg, then prepare to run in the
1369 foreground, synchronously. */
1370 if (!async_exec && target_can_async_p ())
1372 /* Simulate synchronous execution. */
1373 async_disable_stdin ();
1377 until_break_command (arg, from_tty, 0);
1379 until_next_command (from_tty);
1383 advance_command (char *arg, int from_tty)
1388 ensure_not_tfind_mode ();
1389 ensure_valid_thread ();
1390 ensure_not_running ();
1393 error_no_arg (_("a location"));
1395 /* Find out whether we must run in the background. */
1397 async_exec = strip_bg_char (&arg);
1399 /* If we must run in the background, but the target can't do it,
1401 if (async_exec && !target_can_async_p ())
1402 error (_("Asynchronous execution not supported on this target."));
1404 /* If we are not asked to run in the bg, then prepare to run in the
1405 foreground, synchronously. */
1406 if (!async_exec && target_can_async_p ())
1408 /* Simulate synchronous execution. */
1409 async_disable_stdin ();
1412 until_break_command (arg, from_tty, 1);
1415 /* Return the value of the result of a function at the end of a 'finish'
1419 get_return_value (struct type *func_type, struct type *value_type)
1421 struct regcache *stop_regs = stop_registers;
1422 struct gdbarch *gdbarch;
1423 struct value *value;
1424 struct ui_out *uiout = current_uiout;
1425 struct cleanup *cleanup = make_cleanup (null_cleanup, NULL);
1427 /* If stop_registers were not saved, use the current registers. */
1430 stop_regs = regcache_dup (get_current_regcache ());
1431 cleanup = make_cleanup_regcache_xfree (stop_regs);
1434 gdbarch = get_regcache_arch (stop_regs);
1436 CHECK_TYPEDEF (value_type);
1437 gdb_assert (TYPE_CODE (value_type) != TYPE_CODE_VOID);
1439 /* FIXME: 2003-09-27: When returning from a nested inferior function
1440 call, it's possible (with no help from the architecture vector)
1441 to locate and return/print a "struct return" value. This is just
1442 a more complicated case of what is already being done in the
1443 inferior function call code. In fact, when inferior function
1444 calls are made async, this will likely be made the norm. */
1446 switch (gdbarch_return_value (gdbarch, func_type, value_type,
1449 case RETURN_VALUE_REGISTER_CONVENTION:
1450 case RETURN_VALUE_ABI_RETURNS_ADDRESS:
1451 case RETURN_VALUE_ABI_PRESERVES_ADDRESS:
1452 value = allocate_value (value_type);
1453 gdbarch_return_value (gdbarch, func_type, value_type, stop_regs,
1454 value_contents_raw (value), NULL);
1456 case RETURN_VALUE_STRUCT_CONVENTION:
1460 internal_error (__FILE__, __LINE__, _("bad switch"));
1463 do_cleanups (cleanup);
1468 /* Print the result of a function at the end of a 'finish' command. */
1471 print_return_value (struct type *func_type, struct type *value_type)
1473 struct value *value = get_return_value (func_type, value_type);
1474 struct cleanup *old_chain;
1475 struct ui_stream *stb;
1476 struct ui_out *uiout = current_uiout;
1480 struct value_print_options opts;
1483 stb = ui_out_stream_new (uiout);
1484 old_chain = make_cleanup_ui_out_stream_delete (stb);
1485 ui_out_text (uiout, "Value returned is ");
1486 ui_out_field_fmt (uiout, "gdb-result-var", "$%d",
1487 record_latest_value (value));
1488 ui_out_text (uiout, " = ");
1489 get_raw_print_options (&opts);
1490 value_print (value, stb->stream, &opts);
1491 ui_out_field_stream (uiout, "return-value", stb);
1492 ui_out_text (uiout, "\n");
1493 do_cleanups (old_chain);
1497 ui_out_text (uiout, "Value returned has type: ");
1498 ui_out_field_string (uiout, "return-type", TYPE_NAME (value_type));
1499 ui_out_text (uiout, ".");
1500 ui_out_text (uiout, " Cannot determine contents\n");
1504 /* Stuff that needs to be done by the finish command after the target
1505 has stopped. In asynchronous mode, we wait for the target to stop
1506 in the call to poll or select in the event loop, so it is
1507 impossible to do all the stuff as part of the finish_command
1508 function itself. The only chance we have to complete this command
1509 is in fetch_inferior_event, which is called by the event loop as
1510 soon as it detects that the target has stopped. */
1512 struct finish_command_continuation_args
1514 /* The thread that as current when the command was executed. */
1516 struct breakpoint *breakpoint;
1517 struct symbol *function;
1521 finish_command_continuation (void *arg, int err)
1523 struct finish_command_continuation_args *a = arg;
1527 struct thread_info *tp = NULL;
1530 if (!ptid_equal (inferior_ptid, null_ptid)
1531 && target_has_execution
1532 && is_stopped (inferior_ptid))
1534 tp = inferior_thread ();
1535 bs = tp->control.stop_bpstat;
1538 if (bpstat_find_breakpoint (bs, a->breakpoint) != NULL
1539 && a->function != NULL)
1541 struct type *value_type;
1543 value_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (a->function));
1545 internal_error (__FILE__, __LINE__,
1546 _("finish_command: function has no target type"));
1548 if (TYPE_CODE (value_type) != TYPE_CODE_VOID)
1550 volatile struct gdb_exception ex;
1552 TRY_CATCH (ex, RETURN_MASK_ALL)
1554 /* print_return_value can throw an exception in some
1555 circumstances. We need to catch this so that we still
1556 delete the breakpoint. */
1557 print_return_value (SYMBOL_TYPE (a->function), value_type);
1560 exception_print (gdb_stdout, ex);
1564 /* We suppress normal call of normal_stop observer and do it
1565 here so that the *stopped notification includes the return
1567 if (bs != NULL && tp->control.proceed_to_finish)
1568 observer_notify_normal_stop (bs, 1 /* print frame */);
1571 delete_breakpoint (a->breakpoint);
1572 delete_longjmp_breakpoint (a->thread);
1576 finish_command_continuation_free_arg (void *arg)
1581 /* finish_backward -- helper function for finish_command. */
1584 finish_backward (struct symbol *function)
1586 struct symtab_and_line sal;
1587 struct thread_info *tp = inferior_thread ();
1589 CORE_ADDR func_addr;
1591 pc = get_frame_pc (get_current_frame ());
1593 if (find_pc_partial_function (pc, NULL, &func_addr, NULL) == 0)
1594 internal_error (__FILE__, __LINE__,
1595 _("Finish: couldn't find function."));
1597 sal = find_pc_line (func_addr, 0);
1599 tp->control.proceed_to_finish = 1;
1600 /* Special case: if we're sitting at the function entry point,
1601 then all we need to do is take a reverse singlestep. We
1602 don't need to set a breakpoint, and indeed it would do us
1605 Note that this can only happen at frame #0, since there's
1606 no way that a function up the stack can have a return address
1607 that's equal to its entry point. */
1611 struct frame_info *frame = get_selected_frame (NULL);
1612 struct gdbarch *gdbarch = get_frame_arch (frame);
1613 struct symtab_and_line sr_sal;
1615 /* Set a step-resume at the function's entry point. Once that's
1616 hit, we'll do one more step backwards. */
1619 sr_sal.pspace = get_frame_program_space (frame);
1620 insert_step_resume_breakpoint_at_sal (gdbarch,
1621 sr_sal, null_frame_id);
1623 proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0);
1627 /* We're almost there -- we just need to back up by one more
1629 tp->control.step_range_start = tp->control.step_range_end = 1;
1630 proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 1);
1634 /* finish_forward -- helper function for finish_command. */
1637 finish_forward (struct symbol *function, struct frame_info *frame)
1639 struct gdbarch *gdbarch = get_frame_arch (frame);
1640 struct symtab_and_line sal;
1641 struct thread_info *tp = inferior_thread ();
1642 struct breakpoint *breakpoint;
1643 struct cleanup *old_chain;
1644 struct finish_command_continuation_args *cargs;
1645 int thread = tp->num;
1647 sal = find_pc_line (get_frame_pc (frame), 0);
1648 sal.pc = get_frame_pc (frame);
1650 breakpoint = set_momentary_breakpoint (gdbarch, sal,
1651 get_stack_frame_id (frame),
1654 old_chain = make_cleanup_delete_breakpoint (breakpoint);
1656 set_longjmp_breakpoint (tp, get_frame_id (frame));
1657 make_cleanup (delete_longjmp_breakpoint_cleanup, &thread);
1659 /* We want stop_registers, please... */
1660 tp->control.proceed_to_finish = 1;
1661 cargs = xmalloc (sizeof (*cargs));
1663 cargs->thread = thread;
1664 cargs->breakpoint = breakpoint;
1665 cargs->function = function;
1666 add_continuation (tp, finish_command_continuation, cargs,
1667 finish_command_continuation_free_arg);
1668 proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0);
1670 discard_cleanups (old_chain);
1671 if (!target_can_async_p ())
1672 do_all_continuations (0);
1675 /* "finish": Set a temporary breakpoint at the place the selected
1676 frame will return to, then continue. */
1679 finish_command (char *arg, int from_tty)
1681 struct frame_info *frame;
1682 struct symbol *function;
1687 ensure_not_tfind_mode ();
1688 ensure_valid_thread ();
1689 ensure_not_running ();
1691 /* Find out whether we must run in the background. */
1693 async_exec = strip_bg_char (&arg);
1695 /* If we must run in the background, but the target can't do it,
1697 if (async_exec && !target_can_async_p ())
1698 error (_("Asynchronous execution not supported on this target."));
1700 /* If we are not asked to run in the bg, then prepare to run in the
1701 foreground, synchronously. */
1702 if (!async_exec && target_can_async_p ())
1704 /* Simulate synchronous execution. */
1705 async_disable_stdin ();
1709 error (_("The \"finish\" command does not take any arguments."));
1711 frame = get_prev_frame (get_selected_frame (_("No selected frame.")));
1713 error (_("\"finish\" not meaningful in the outermost frame."));
1715 clear_proceed_status ();
1717 /* Finishing from an inline frame is completely different. We don't
1718 try to show the "return value" - no way to locate it. So we do
1719 not need a completion. */
1720 if (get_frame_type (get_selected_frame (_("No selected frame.")))
1723 /* Claim we are stepping in the calling frame. An empty step
1724 range means that we will stop once we aren't in a function
1725 called by that frame. We don't use the magic "1" value for
1726 step_range_end, because then infrun will think this is nexti,
1727 and not step over the rest of this inlined function call. */
1728 struct thread_info *tp = inferior_thread ();
1729 struct symtab_and_line empty_sal;
1731 init_sal (&empty_sal);
1732 set_step_info (frame, empty_sal);
1733 tp->control.step_range_start = get_frame_pc (frame);
1734 tp->control.step_range_end = tp->control.step_range_start;
1735 tp->control.step_over_calls = STEP_OVER_ALL;
1737 /* Print info on the selected frame, including level number but not
1741 printf_filtered (_("Run till exit from "));
1742 print_stack_frame (get_selected_frame (NULL), 1, LOCATION);
1745 proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 1);
1749 /* Find the function we will return from. */
1751 function = find_pc_function (get_frame_pc (get_selected_frame (NULL)));
1753 /* Print info on the selected frame, including level number but not
1757 if (execution_direction == EXEC_REVERSE)
1758 printf_filtered (_("Run back to call of "));
1760 printf_filtered (_("Run till exit from "));
1762 print_stack_frame (get_selected_frame (NULL), 1, LOCATION);
1765 if (execution_direction == EXEC_REVERSE)
1766 finish_backward (function);
1768 finish_forward (function, frame);
1773 program_info (char *args, int from_tty)
1777 struct thread_info *tp;
1780 if (!target_has_execution)
1782 printf_filtered (_("The program being debugged is not being run.\n"));
1787 ptid = inferior_ptid;
1790 struct target_waitstatus ws;
1792 get_last_target_status (&ptid, &ws);
1795 if (ptid_equal (ptid, null_ptid) || is_exited (ptid))
1796 error (_("Invalid selected thread."));
1797 else if (is_running (ptid))
1798 error (_("Selected thread is running."));
1800 tp = find_thread_ptid (ptid);
1801 bs = tp->control.stop_bpstat;
1802 stat = bpstat_num (&bs, &num);
1804 target_files_info ();
1805 printf_filtered (_("Program stopped at %s.\n"),
1806 paddress (target_gdbarch, stop_pc));
1807 if (tp->control.stop_step)
1808 printf_filtered (_("It stopped after being stepped.\n"));
1811 /* There may be several breakpoints in the same place, so this
1812 isn't as strange as it seems. */
1817 printf_filtered (_("It stopped at a breakpoint "
1818 "that has since been deleted.\n"));
1821 printf_filtered (_("It stopped at breakpoint %d.\n"), num);
1822 stat = bpstat_num (&bs, &num);
1825 else if (tp->suspend.stop_signal != TARGET_SIGNAL_0)
1827 printf_filtered (_("It stopped with signal %s, %s.\n"),
1828 target_signal_to_name (tp->suspend.stop_signal),
1829 target_signal_to_string (tp->suspend.stop_signal));
1834 printf_filtered (_("Type \"info stack\" or \"info "
1835 "registers\" for more information.\n"));
1840 environment_info (char *var, int from_tty)
1844 char *val = get_in_environ (current_inferior ()->environment, var);
1848 puts_filtered (var);
1849 puts_filtered (" = ");
1850 puts_filtered (val);
1851 puts_filtered ("\n");
1855 puts_filtered ("Environment variable \"");
1856 puts_filtered (var);
1857 puts_filtered ("\" not defined.\n");
1862 char **vector = environ_vector (current_inferior ()->environment);
1866 puts_filtered (*vector++);
1867 puts_filtered ("\n");
1873 set_environment_command (char *arg, int from_tty)
1875 char *p, *val, *var;
1879 error_no_arg (_("environment variable and value"));
1881 /* Find seperation between variable name and value. */
1882 p = (char *) strchr (arg, '=');
1883 val = (char *) strchr (arg, ' ');
1885 if (p != 0 && val != 0)
1887 /* We have both a space and an equals. If the space is before the
1888 equals, walk forward over the spaces til we see a nonspace
1889 (possibly the equals). */
1894 /* Now if the = is after the char following the spaces,
1895 take the char following the spaces. */
1899 else if (val != 0 && p == 0)
1903 error_no_arg (_("environment variable to set"));
1905 if (p == 0 || p[1] == 0)
1909 p = arg + strlen (arg); /* So that savestring below will work. */
1913 /* Not setting variable value to null. */
1915 while (*val == ' ' || *val == '\t')
1919 while (p != arg && (p[-1] == ' ' || p[-1] == '\t'))
1922 var = savestring (arg, p - arg);
1925 printf_filtered (_("Setting environment variable "
1926 "\"%s\" to null value.\n"),
1928 set_in_environ (current_inferior ()->environment, var, "");
1931 set_in_environ (current_inferior ()->environment, var, val);
1936 unset_environment_command (char *var, int from_tty)
1940 /* If there is no argument, delete all environment variables.
1941 Ask for confirmation if reading from the terminal. */
1942 if (!from_tty || query (_("Delete all environment variables? ")))
1944 free_environ (current_inferior ()->environment);
1945 current_inferior ()->environment = make_environ ();
1949 unset_in_environ (current_inferior ()->environment, var);
1952 /* Handle the execution path (PATH variable). */
1954 static const char path_var_name[] = "PATH";
1957 path_info (char *args, int from_tty)
1959 puts_filtered ("Executable and object file path: ");
1960 puts_filtered (get_in_environ (current_inferior ()->environment,
1962 puts_filtered ("\n");
1965 /* Add zero or more directories to the front of the execution path. */
1968 path_command (char *dirname, int from_tty)
1974 env = get_in_environ (current_inferior ()->environment, path_var_name);
1975 /* Can be null if path is not set. */
1978 exec_path = xstrdup (env);
1979 mod_path (dirname, &exec_path);
1980 set_in_environ (current_inferior ()->environment, path_var_name, exec_path);
1983 path_info ((char *) NULL, from_tty);
1987 /* Print out the machine register regnum. If regnum is -1, print all
1988 registers (print_all == 1) or all non-float and non-vector
1989 registers (print_all == 0).
1991 For most machines, having all_registers_info() print the
1992 register(s) one per line is good enough. If a different format is
1993 required, (eg, for MIPS or Pyramid 90x, which both have lots of
1994 regs), or there is an existing convention for showing all the
1995 registers, define the architecture method PRINT_REGISTERS_INFO to
1996 provide that format. */
1999 default_print_registers_info (struct gdbarch *gdbarch,
2000 struct ui_file *file,
2001 struct frame_info *frame,
2002 int regnum, int print_all)
2005 const int numregs = gdbarch_num_regs (gdbarch)
2006 + gdbarch_num_pseudo_regs (gdbarch);
2008 for (i = 0; i < numregs; i++)
2010 struct type *regtype;
2013 /* Decide between printing all regs, non-float / vector regs, or
2019 if (!gdbarch_register_reggroup_p (gdbarch, i, all_reggroup))
2024 if (!gdbarch_register_reggroup_p (gdbarch, i, general_reggroup))
2034 /* If the register name is empty, it is undefined for this
2035 processor, so don't display anything. */
2036 if (gdbarch_register_name (gdbarch, i) == NULL
2037 || *(gdbarch_register_name (gdbarch, i)) == '\0')
2040 fputs_filtered (gdbarch_register_name (gdbarch, i), file);
2041 print_spaces_filtered (15 - strlen (gdbarch_register_name
2042 (gdbarch, i)), file);
2044 regtype = register_type (gdbarch, i);
2045 val = allocate_value (regtype);
2047 /* Get the data in raw format. */
2048 if (! frame_register_read (frame, i, value_contents_raw (val)))
2050 fprintf_filtered (file, "*value not available*\n");
2054 /* If virtual format is floating, print it that way, and in raw
2056 if (TYPE_CODE (regtype) == TYPE_CODE_FLT
2057 || TYPE_CODE (regtype) == TYPE_CODE_DECFLOAT)
2060 struct value_print_options opts;
2061 const gdb_byte *valaddr = value_contents_for_printing (val);
2063 get_user_print_options (&opts);
2067 value_contents_for_printing (val),
2068 value_embedded_offset (val), 0,
2069 file, 0, val, &opts, current_language);
2071 fprintf_filtered (file, "\t(raw 0x");
2072 for (j = 0; j < register_size (gdbarch, i); j++)
2076 if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG)
2079 idx = register_size (gdbarch, i) - 1 - j;
2080 fprintf_filtered (file, "%02x", (unsigned char) valaddr[idx]);
2082 fprintf_filtered (file, ")");
2086 struct value_print_options opts;
2088 /* Print the register in hex. */
2089 get_formatted_print_options (&opts, 'x');
2092 value_contents_for_printing (val),
2093 value_embedded_offset (val), 0,
2094 file, 0, val, &opts, current_language);
2095 /* If not a vector register, print it also according to its
2097 if (TYPE_VECTOR (regtype) == 0)
2099 get_user_print_options (&opts);
2101 fprintf_filtered (file, "\t");
2103 value_contents_for_printing (val),
2104 value_embedded_offset (val), 0,
2105 file, 0, val, &opts, current_language);
2109 fprintf_filtered (file, "\n");
2114 registers_info (char *addr_exp, int fpregs)
2116 struct frame_info *frame;
2117 struct gdbarch *gdbarch;
2119 if (!target_has_registers)
2120 error (_("The program has no registers now."));
2121 frame = get_selected_frame (NULL);
2122 gdbarch = get_frame_arch (frame);
2126 gdbarch_print_registers_info (gdbarch, gdb_stdout,
2131 while (*addr_exp != '\0')
2136 /* Keep skipping leading white space. */
2137 if (isspace ((*addr_exp)))
2143 /* Discard any leading ``$''. Check that there is something
2144 resembling a register following it. */
2145 if (addr_exp[0] == '$')
2147 if (isspace ((*addr_exp)) || (*addr_exp) == '\0')
2148 error (_("Missing register name"));
2150 /* Find the start/end of this register name/num/group. */
2152 while ((*addr_exp) != '\0' && !isspace ((*addr_exp)))
2156 /* Figure out what we've found and display it. */
2158 /* A register name? */
2160 int regnum = user_reg_map_name_to_regnum (gdbarch, start, end - start);
2164 /* User registers lie completely outside of the range of
2165 normal registers. Catch them early so that the target
2167 if (regnum >= gdbarch_num_regs (gdbarch)
2168 + gdbarch_num_pseudo_regs (gdbarch))
2170 struct value_print_options opts;
2171 struct value *val = value_of_user_reg (regnum, frame);
2173 printf_filtered ("%.*s: ", (int) (end - start), start);
2174 get_formatted_print_options (&opts, 'x');
2175 val_print_scalar_formatted (check_typedef (value_type (val)),
2176 value_contents_for_printing (val),
2177 value_embedded_offset (val),
2179 &opts, 0, gdb_stdout);
2180 printf_filtered ("\n");
2183 gdbarch_print_registers_info (gdbarch, gdb_stdout,
2184 frame, regnum, fpregs);
2189 /* A register group? */
2191 struct reggroup *group;
2193 for (group = reggroup_next (gdbarch, NULL);
2195 group = reggroup_next (gdbarch, group))
2197 /* Don't bother with a length check. Should the user
2198 enter a short register group name, go with the first
2199 group that matches. */
2200 if (strncmp (start, reggroup_name (group), end - start) == 0)
2208 regnum < gdbarch_num_regs (gdbarch)
2209 + gdbarch_num_pseudo_regs (gdbarch);
2212 if (gdbarch_register_reggroup_p (gdbarch, regnum, group))
2213 gdbarch_print_registers_info (gdbarch,
2221 /* Nothing matched. */
2222 error (_("Invalid register `%.*s'"), (int) (end - start), start);
2227 all_registers_info (char *addr_exp, int from_tty)
2229 registers_info (addr_exp, 1);
2233 nofp_registers_info (char *addr_exp, int from_tty)
2235 registers_info (addr_exp, 0);
2239 print_vector_info (struct ui_file *file,
2240 struct frame_info *frame, const char *args)
2242 struct gdbarch *gdbarch = get_frame_arch (frame);
2244 if (gdbarch_print_vector_info_p (gdbarch))
2245 gdbarch_print_vector_info (gdbarch, file, frame, args);
2249 int printed_something = 0;
2252 regnum < gdbarch_num_regs (gdbarch)
2253 + gdbarch_num_pseudo_regs (gdbarch);
2256 if (gdbarch_register_reggroup_p (gdbarch, regnum, vector_reggroup))
2258 printed_something = 1;
2259 gdbarch_print_registers_info (gdbarch, file, frame, regnum, 1);
2262 if (!printed_something)
2263 fprintf_filtered (file, "No vector information\n");
2268 vector_info (char *args, int from_tty)
2270 if (!target_has_registers)
2271 error (_("The program has no registers now."));
2273 print_vector_info (gdb_stdout, get_selected_frame (NULL), args);
2276 /* Kill the inferior process. Make us have no inferior. */
2279 kill_command (char *arg, int from_tty)
2281 /* FIXME: This should not really be inferior_ptid (or target_has_execution).
2282 It should be a distinct flag that indicates that a target is active, cuz
2283 some targets don't have processes! */
2285 if (ptid_equal (inferior_ptid, null_ptid))
2286 error (_("The program is not being run."));
2287 if (!query (_("Kill the program being debugged? ")))
2288 error (_("Not confirmed."));
2291 /* If we still have other inferiors to debug, then don't mess with
2292 with their threads. */
2293 if (!have_inferiors ())
2295 init_thread_list (); /* Destroy thread info. */
2297 /* Killing off the inferior can leave us with a core file. If
2298 so, print the state we are left in. */
2299 if (target_has_stack)
2301 printf_filtered (_("In %s,\n"), target_longname);
2302 print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC);
2305 bfd_cache_close_all ();
2308 /* Used in `attach&' command. ARG is a point to an integer
2309 representing a process id. Proceed threads of this process iff
2310 they stopped due to debugger request, and when they did, they
2311 reported a clean stop (TARGET_SIGNAL_0). Do not proceed threads
2312 that have been explicitly been told to stop. */
2315 proceed_after_attach_callback (struct thread_info *thread,
2318 int pid = * (int *) arg;
2320 if (ptid_get_pid (thread->ptid) == pid
2321 && !is_exited (thread->ptid)
2322 && !is_executing (thread->ptid)
2323 && !thread->stop_requested
2324 && thread->suspend.stop_signal == TARGET_SIGNAL_0)
2326 switch_to_thread (thread->ptid);
2327 clear_proceed_status ();
2328 proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0);
2335 proceed_after_attach (int pid)
2337 /* Don't error out if the current thread is running, because
2338 there may be other stopped threads. */
2339 struct cleanup *old_chain;
2341 /* Backup current thread and selected frame. */
2342 old_chain = make_cleanup_restore_current_thread ();
2344 iterate_over_threads (proceed_after_attach_callback, &pid);
2346 /* Restore selected ptid. */
2347 do_cleanups (old_chain);
2352 * Should save/restore the tty state since it might be that the
2353 * program to be debugged was started on this tty and it wants
2354 * the tty in some state other than what we want. If it's running
2355 * on another terminal or without a terminal, then saving and
2356 * restoring the tty state is a harmless no-op.
2357 * This only needs to be done if we are attaching to a process.
2360 /* attach_command --
2361 takes a program started up outside of gdb and ``attaches'' to it.
2362 This stops it cold in its tracks and allows us to start debugging it.
2363 and wait for the trace-trap that results from attaching. */
2366 attach_command_post_wait (char *args, int from_tty, int async_exec)
2369 char *full_exec_path = NULL;
2370 struct inferior *inferior;
2372 inferior = current_inferior ();
2373 inferior->control.stop_soon = NO_STOP_QUIETLY;
2375 /* If no exec file is yet known, try to determine it from the
2377 exec_file = (char *) get_exec_file (0);
2380 exec_file = target_pid_to_exec_file (PIDGET (inferior_ptid));
2383 /* It's possible we don't have a full path, but rather just a
2384 filename. Some targets, such as HP-UX, don't provide the
2387 Attempt to qualify the filename against the source path.
2388 (If that fails, we'll just fall back on the original
2389 filename. Not much more we can do...) */
2391 if (!source_full_path_of (exec_file, &full_exec_path))
2392 full_exec_path = xstrdup (exec_file);
2394 exec_file_attach (full_exec_path, from_tty);
2395 symbol_file_add_main (full_exec_path, from_tty);
2400 reopen_exec_file ();
2404 /* Take any necessary post-attaching actions for this platform. */
2405 target_post_attach (PIDGET (inferior_ptid));
2407 post_create_inferior (¤t_target, from_tty);
2409 /* Install inferior's terminal modes. */
2410 target_terminal_inferior ();
2414 /* The user requested an `attach&', so be sure to leave threads
2415 that didn't get a signal running. */
2417 /* Immediatelly resume all suspended threads of this inferior,
2418 and this inferior only. This should have no effect on
2419 already running threads. If a thread has been stopped with a
2420 signal, leave it be. */
2422 proceed_after_attach (inferior->pid);
2425 if (inferior_thread ()->suspend.stop_signal == TARGET_SIGNAL_0)
2427 clear_proceed_status ();
2428 proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0);
2434 /* The user requested a plain `attach', so be sure to leave
2435 the inferior stopped. */
2437 if (target_can_async_p ())
2438 async_enable_stdin ();
2440 /* At least the current thread is already stopped. */
2442 /* In all-stop, by definition, all threads have to be already
2443 stopped at this point. In non-stop, however, although the
2444 selected thread is stopped, others may still be executing.
2445 Be sure to explicitly stop all threads of the process. This
2446 should have no effect on already stopped threads. */
2448 target_stop (pid_to_ptid (inferior->pid));
2450 /* Tell the user/frontend where we're stopped. */
2452 if (deprecated_attach_hook)
2453 deprecated_attach_hook ();
2457 struct attach_command_continuation_args
2465 attach_command_continuation (void *args, int err)
2467 struct attach_command_continuation_args *a = args;
2472 attach_command_post_wait (a->args, a->from_tty, a->async_exec);
2476 attach_command_continuation_free_args (void *args)
2478 struct attach_command_continuation_args *a = args;
2485 attach_command (char *args, int from_tty)
2488 struct cleanup *back_to = make_cleanup (null_cleanup, NULL);
2490 dont_repeat (); /* Not for the faint of heart */
2492 if (gdbarch_has_global_solist (target_gdbarch))
2493 /* Don't complain if all processes share the same symbol
2496 else if (target_has_execution)
2498 if (query (_("A program is being debugged already. Kill it? ")))
2501 error (_("Not killed."));
2504 /* Clean up any leftovers from other runs. Some other things from
2505 this function should probably be moved into target_pre_inferior. */
2506 target_pre_inferior (from_tty);
2508 if (non_stop && !target_supports_non_stop ())
2509 error (_("Cannot attach to this target in non-stop mode"));
2513 async_exec = strip_bg_char (&args);
2515 /* If we get a request for running in the bg but the target
2516 doesn't support it, error out. */
2517 if (async_exec && !target_can_async_p ())
2518 error (_("Asynchronous execution not supported on this target."));
2521 /* If we don't get a request of running in the bg, then we need
2522 to simulate synchronous (fg) execution. */
2523 if (!async_exec && target_can_async_p ())
2525 /* Simulate synchronous execution. */
2526 async_disable_stdin ();
2527 make_cleanup ((make_cleanup_ftype *)async_enable_stdin, NULL);
2530 target_attach (args, from_tty);
2532 /* Set up the "saved terminal modes" of the inferior
2533 based on what modes we are starting it with. */
2534 target_terminal_init ();
2536 /* Set up execution context to know that we should return from
2537 wait_for_inferior as soon as the target reports a stop. */
2538 init_wait_for_inferior ();
2539 clear_proceed_status ();
2543 /* If we find that the current thread isn't stopped, explicitly
2544 do so now, because we're going to install breakpoints and
2548 /* The user requested an `attach&'; stop just one thread. */
2549 target_stop (inferior_ptid);
2551 /* The user requested an `attach', so stop all threads of this
2553 target_stop (pid_to_ptid (ptid_get_pid (inferior_ptid)));
2556 /* Some system don't generate traps when attaching to inferior.
2557 E.g. Mach 3 or GNU hurd. */
2558 if (!target_attach_no_wait)
2560 struct inferior *inferior = current_inferior ();
2562 /* Careful here. See comments in inferior.h. Basically some
2563 OSes don't ignore SIGSTOPs on continue requests anymore. We
2564 need a way for handle_inferior_event to reset the stop_signal
2565 variable after an attach, and this is what
2566 STOP_QUIETLY_NO_SIGSTOP is for. */
2567 inferior->control.stop_soon = STOP_QUIETLY_NO_SIGSTOP;
2569 if (target_can_async_p ())
2571 /* sync_execution mode. Wait for stop. */
2572 struct attach_command_continuation_args *a;
2574 a = xmalloc (sizeof (*a));
2575 a->args = xstrdup (args);
2576 a->from_tty = from_tty;
2577 a->async_exec = async_exec;
2578 add_inferior_continuation (attach_command_continuation, a,
2579 attach_command_continuation_free_args);
2580 discard_cleanups (back_to);
2584 wait_for_inferior ();
2587 attach_command_post_wait (args, from_tty, async_exec);
2588 discard_cleanups (back_to);
2591 /* We had just found out that the target was already attached to an
2592 inferior. PTID points at a thread of this new inferior, that is
2593 the most likely to be stopped right now, but not necessarily so.
2594 The new inferior is assumed to be already added to the inferior
2595 list at this point. If LEAVE_RUNNING, then leave the threads of
2596 this inferior running, except those we've explicitly seen reported
2600 notice_new_inferior (ptid_t ptid, int leave_running, int from_tty)
2602 struct cleanup* old_chain;
2605 old_chain = make_cleanup (null_cleanup, NULL);
2607 /* If in non-stop, leave threads as running as they were. If
2608 they're stopped for some reason other than us telling it to, the
2609 target reports a signal != TARGET_SIGNAL_0. We don't try to
2610 resume threads with such a stop signal. */
2611 async_exec = non_stop;
2613 if (!ptid_equal (inferior_ptid, null_ptid))
2614 make_cleanup_restore_current_thread ();
2616 switch_to_thread (ptid);
2618 /* When we "notice" a new inferior we need to do all the things we
2619 would normally do if we had just attached to it. */
2621 if (is_executing (inferior_ptid))
2623 struct inferior *inferior = current_inferior ();
2625 /* We're going to install breakpoints, and poke at memory,
2626 ensure that the inferior is stopped for a moment while we do
2628 target_stop (inferior_ptid);
2630 inferior->control.stop_soon = STOP_QUIETLY_REMOTE;
2632 /* Wait for stop before proceeding. */
2633 if (target_can_async_p ())
2635 struct attach_command_continuation_args *a;
2637 a = xmalloc (sizeof (*a));
2638 a->args = xstrdup ("");
2639 a->from_tty = from_tty;
2640 a->async_exec = async_exec;
2641 add_inferior_continuation (attach_command_continuation, a,
2642 attach_command_continuation_free_args);
2644 do_cleanups (old_chain);
2648 wait_for_inferior ();
2651 async_exec = leave_running;
2652 attach_command_post_wait ("" /* args */, from_tty, async_exec);
2654 do_cleanups (old_chain);
2659 * takes a program previously attached to and detaches it.
2660 * The program resumes execution and will no longer stop
2661 * on signals, etc. We better not have left any breakpoints
2662 * in the program or it'll die when it hits one. For this
2663 * to work, it may be necessary for the process to have been
2664 * previously attached. It *might* work if the program was
2665 * started via the normal ptrace (PTRACE_TRACEME).
2669 detach_command (char *args, int from_tty)
2671 dont_repeat (); /* Not for the faint of heart. */
2673 if (ptid_equal (inferior_ptid, null_ptid))
2674 error (_("The program is not being run."));
2676 disconnect_tracing (from_tty);
2678 target_detach (args, from_tty);
2680 /* If the solist is global across inferiors, don't clear it when we
2681 detach from a single inferior. */
2682 if (!gdbarch_has_global_solist (target_gdbarch))
2683 no_shared_libraries (NULL, from_tty);
2685 /* If we still have inferiors to debug, then don't mess with their
2687 if (!have_inferiors ())
2688 init_thread_list ();
2690 if (deprecated_detach_hook)
2691 deprecated_detach_hook ();
2694 /* Disconnect from the current target without resuming it (leaving it
2695 waiting for a debugger).
2697 We'd better not have left any breakpoints in the program or the
2698 next debugger will get confused. Currently only supported for some
2699 remote targets, since the normal attach mechanisms don't work on
2700 stopped processes on some native platforms (e.g. GNU/Linux). */
2703 disconnect_command (char *args, int from_tty)
2705 dont_repeat (); /* Not for the faint of heart. */
2706 disconnect_tracing (from_tty);
2707 target_disconnect (args, from_tty);
2708 no_shared_libraries (NULL, from_tty);
2709 init_thread_list ();
2710 if (deprecated_detach_hook)
2711 deprecated_detach_hook ();
2715 interrupt_target_1 (int all_threads)
2720 ptid = minus_one_ptid;
2722 ptid = inferior_ptid;
2725 /* Tag the thread as having been explicitly requested to stop, so
2726 other parts of gdb know not to resume this thread automatically,
2727 if it was stopped due to an internal event. Limit this to
2728 non-stop mode, as when debugging a multi-threaded application in
2729 all-stop mode, we will only get one stop event --- it's undefined
2730 which thread will report the event. */
2732 set_stop_requested (ptid, 1);
2735 /* Stop the execution of the target while running in async mode, in
2736 the backgound. In all-stop, stop the whole process. In non-stop
2737 mode, stop the current thread only by default, or stop all threads
2738 if the `-a' switch is used. */
2740 /* interrupt [-a] */
2742 interrupt_target_command (char *args, int from_tty)
2744 if (target_can_async_p ())
2746 int all_threads = 0;
2748 dont_repeat (); /* Not for the faint of heart. */
2751 && strncmp (args, "-a", sizeof ("-a") - 1) == 0)
2754 if (!non_stop && all_threads)
2755 error (_("-a is meaningless in all-stop mode."));
2757 interrupt_target_1 (all_threads);
2762 print_float_info (struct ui_file *file,
2763 struct frame_info *frame, const char *args)
2765 struct gdbarch *gdbarch = get_frame_arch (frame);
2767 if (gdbarch_print_float_info_p (gdbarch))
2768 gdbarch_print_float_info (gdbarch, file, frame, args);
2772 int printed_something = 0;
2775 regnum < gdbarch_num_regs (gdbarch)
2776 + gdbarch_num_pseudo_regs (gdbarch);
2779 if (gdbarch_register_reggroup_p (gdbarch, regnum, float_reggroup))
2781 printed_something = 1;
2782 gdbarch_print_registers_info (gdbarch, file, frame, regnum, 1);
2785 if (!printed_something)
2786 fprintf_filtered (file, "No floating-point info "
2787 "available for this processor.\n");
2792 float_info (char *args, int from_tty)
2794 if (!target_has_registers)
2795 error (_("The program has no registers now."));
2797 print_float_info (gdb_stdout, get_selected_frame (NULL), args);
2801 unset_command (char *args, int from_tty)
2803 printf_filtered (_("\"unset\" must be followed by the "
2804 "name of an unset subcommand.\n"));
2805 help_list (unsetlist, "unset ", -1, gdb_stdout);
2808 /* Implement `info proc' family of commands. */
2811 info_proc_cmd_1 (char *args, enum info_proc_what what, int from_tty)
2813 struct gdbarch *gdbarch = get_current_arch ();
2815 if (gdbarch_info_proc_p (gdbarch))
2816 gdbarch_info_proc (gdbarch, args, what);
2818 target_info_proc (args, what);
2821 /* Implement `info proc' when given without any futher parameters. */
2824 info_proc_cmd (char *args, int from_tty)
2826 info_proc_cmd_1 (args, IP_MINIMAL, from_tty);
2829 /* Implement `info proc mappings'. */
2832 info_proc_cmd_mappings (char *args, int from_tty)
2834 info_proc_cmd_1 (args, IP_MAPPINGS, from_tty);
2837 /* Implement `info proc stat'. */
2840 info_proc_cmd_stat (char *args, int from_tty)
2842 info_proc_cmd_1 (args, IP_STAT, from_tty);
2845 /* Implement `info proc status'. */
2848 info_proc_cmd_status (char *args, int from_tty)
2850 info_proc_cmd_1 (args, IP_STATUS, from_tty);
2853 /* Implement `info proc cwd'. */
2856 info_proc_cmd_cwd (char *args, int from_tty)
2858 info_proc_cmd_1 (args, IP_CWD, from_tty);
2861 /* Implement `info proc cmdline'. */
2864 info_proc_cmd_cmdline (char *args, int from_tty)
2866 info_proc_cmd_1 (args, IP_CMDLINE, from_tty);
2869 /* Implement `info proc exe'. */
2872 info_proc_cmd_exe (char *args, int from_tty)
2874 info_proc_cmd_1 (args, IP_EXE, from_tty);
2877 /* Implement `info proc all'. */
2880 info_proc_cmd_all (char *args, int from_tty)
2882 info_proc_cmd_1 (args, IP_ALL, from_tty);
2886 _initialize_infcmd (void)
2888 static struct cmd_list_element *info_proc_cmdlist;
2889 struct cmd_list_element *c = NULL;
2891 /* Add the filename of the terminal connected to inferior I/O. */
2892 add_setshow_filename_cmd ("inferior-tty", class_run,
2893 &inferior_io_terminal_scratch, _("\
2894 Set terminal for future runs of program being debugged."), _("\
2895 Show terminal for future runs of program being debugged."), _("\
2896 Usage: set inferior-tty /dev/pts/1"),
2897 set_inferior_tty_command,
2898 show_inferior_tty_command,
2899 &setlist, &showlist);
2900 add_com_alias ("tty", "set inferior-tty", class_alias, 0);
2902 add_setshow_optional_filename_cmd ("args", class_run,
2903 &inferior_args_scratch, _("\
2904 Set argument list to give program being debugged when it is started."), _("\
2905 Show argument list to give program being debugged when it is started."), _("\
2906 Follow this command with any number of args, to be passed to the program."),
2909 &setlist, &showlist);
2911 c = add_cmd ("environment", no_class, environment_info, _("\
2912 The environment to give the program, or one variable's value.\n\
2913 With an argument VAR, prints the value of environment variable VAR to\n\
2914 give the program being debugged. With no arguments, prints the entire\n\
2915 environment to be given to the program."), &showlist);
2916 set_cmd_completer (c, noop_completer);
2918 add_prefix_cmd ("unset", no_class, unset_command,
2919 _("Complement to certain \"set\" commands."),
2920 &unsetlist, "unset ", 0, &cmdlist);
2922 c = add_cmd ("environment", class_run, unset_environment_command, _("\
2923 Cancel environment variable VAR for the program.\n\
2924 This does not affect the program until the next \"run\" command."),
2926 set_cmd_completer (c, noop_completer);
2928 c = add_cmd ("environment", class_run, set_environment_command, _("\
2929 Set environment variable value to give the program.\n\
2930 Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\
2931 VALUES of environment variables are uninterpreted strings.\n\
2932 This does not affect the program until the next \"run\" command."),
2934 set_cmd_completer (c, noop_completer);
2936 c = add_com ("path", class_files, path_command, _("\
2937 Add directory DIR(s) to beginning of search path for object files.\n\
2938 $cwd in the path means the current working directory.\n\
2939 This path is equivalent to the $PATH shell variable. It is a list of\n\
2940 directories, separated by colons. These directories are searched to find\n\
2941 fully linked executable files and separately compiled object files as \
2943 set_cmd_completer (c, filename_completer);
2945 c = add_cmd ("paths", no_class, path_info, _("\
2946 Current search path for finding object files.\n\
2947 $cwd in the path means the current working directory.\n\
2948 This path is equivalent to the $PATH shell variable. It is a list of\n\
2949 directories, separated by colons. These directories are searched to find\n\
2950 fully linked executable files and separately compiled object files as \
2953 set_cmd_completer (c, noop_completer);
2955 add_prefix_cmd ("kill", class_run, kill_command,
2956 _("Kill execution of program being debugged."),
2957 &killlist, "kill ", 0, &cmdlist);
2959 add_com ("attach", class_run, attach_command, _("\
2960 Attach to a process or file outside of GDB.\n\
2961 This command attaches to another target, of the same type as your last\n\
2962 \"target\" command (\"info files\" will show your target stack).\n\
2963 The command may take as argument a process id or a device file.\n\
2964 For a process id, you must have permission to send the process a signal,\n\
2965 and it must have the same effective uid as the debugger.\n\
2966 When using \"attach\" with a process id, the debugger finds the\n\
2967 program running in the process, looking first in the current working\n\
2968 directory, or (if not found there) using the source file search path\n\
2969 (see the \"directory\" command). You can also use the \"file\" command\n\
2970 to specify the program, and to load its symbol table."));
2972 add_prefix_cmd ("detach", class_run, detach_command, _("\
2973 Detach a process or file previously attached.\n\
2974 If a process, it is no longer traced, and it continues its execution. If\n\
2975 you were debugging a file, the file is closed and gdb no longer accesses it."),
2976 &detachlist, "detach ", 0, &cmdlist);
2978 add_com ("disconnect", class_run, disconnect_command, _("\
2979 Disconnect from a target.\n\
2980 The target will wait for another debugger to connect. Not available for\n\
2983 add_com ("signal", class_run, signal_command, _("\
2984 Continue program giving it signal specified by the argument.\n\
2985 An argument of \"0\" means continue program without giving it a signal."));
2987 add_com ("stepi", class_run, stepi_command, _("\
2988 Step one instruction exactly.\n\
2989 Argument N means do this N times (or till program stops for another \
2991 add_com_alias ("si", "stepi", class_alias, 0);
2993 add_com ("nexti", class_run, nexti_command, _("\
2994 Step one instruction, but proceed through subroutine calls.\n\
2995 Argument N means do this N times (or till program stops for another \
2997 add_com_alias ("ni", "nexti", class_alias, 0);
2999 add_com ("finish", class_run, finish_command, _("\
3000 Execute until selected stack frame returns.\n\
3001 Upon return, the value returned is printed and put in the value history."));
3002 add_com_alias ("fin", "finish", class_run, 1);
3004 add_com ("next", class_run, next_command, _("\
3005 Step program, proceeding through subroutine calls.\n\
3006 Like the \"step\" command as long as subroutine calls do not happen;\n\
3007 when they do, the call is treated as one instruction.\n\
3008 Argument N means do this N times (or till program stops for another \
3010 add_com_alias ("n", "next", class_run, 1);
3012 add_com_alias ("S", "next", class_run, 1);
3014 add_com ("step", class_run, step_command, _("\
3015 Step program until it reaches a different source line.\n\
3016 Argument N means do this N times (or till program stops for another \
3018 add_com_alias ("s", "step", class_run, 1);
3020 c = add_com ("until", class_run, until_command, _("\
3021 Execute until the program reaches a source line greater than the current\n\
3022 or a specified location (same args as break command) within the current \
3024 set_cmd_completer (c, location_completer);
3025 add_com_alias ("u", "until", class_run, 1);
3027 c = add_com ("advance", class_run, advance_command, _("\
3028 Continue the program up to the given location (same form as args for break \
3030 Execution will also stop upon exit from the current stack frame."));
3031 set_cmd_completer (c, location_completer);
3033 c = add_com ("jump", class_run, jump_command, _("\
3034 Continue program being debugged at specified line or address.\n\
3035 Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\
3036 for an address to start at."));
3037 set_cmd_completer (c, location_completer);
3041 c = add_com ("go", class_run, go_command, _("\
3042 Usage: go <location>\n\
3043 Continue program being debugged, stopping at specified line or \n\
3045 Give as argument either LINENUM or *ADDR, where ADDR is an \n\
3046 expression for an address to start at.\n\
3047 This command is a combination of tbreak and jump."));
3048 set_cmd_completer (c, location_completer);
3052 add_com_alias ("g", "go", class_run, 1);
3054 add_com ("continue", class_run, continue_command, _("\
3055 Continue program being debugged, after signal or breakpoint.\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_target_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);