1 /* Memory-access and commands for "inferior" process, for GDB.
3 Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
4 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
5 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
23 #include "arch-utils.h"
25 #include "gdb_string.h"
39 #include "completer.h"
41 #include "event-top.h"
42 #include "parser-defs.h"
44 #include "reggroups.h"
48 #include "gdb_assert.h"
50 #include "target-descriptions.h"
51 #include "user-regs.h"
52 #include "exceptions.h"
53 #include "cli/cli-decode.h"
54 #include "gdbthread.h"
56 #include "inline-frame.h"
57 #include "tracepoint.h"
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 /* Create the hooks to handle shared library load and unload
425 #ifdef SOLIB_CREATE_INFERIOR_HOOK
426 SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid));
428 solib_create_inferior_hook (from_tty);
432 /* If the solist is global across processes, there's no need to
434 if (exec_bfd && !gdbarch_has_global_solist (target_gdbarch))
436 /* Sometimes the platform-specific hook loads initial shared
437 libraries, and sometimes it doesn't. If it doesn't FROM_TTY will be
438 incorrectly 0 but such solib targets should be fixed anyway. If we
439 made all the inferior hook methods consistent, this call could be
440 removed. Call it only after the solib target has been initialized by
441 solib_create_inferior_hook. */
444 SOLIB_ADD (NULL, 0, target, auto_solib_add);
446 solib_add (NULL, 0, target, auto_solib_add);
450 /* If the user sets watchpoints before execution having started,
451 then she gets software watchpoints, because GDB can't know which
452 target will end up being pushed, or if it supports hardware
453 watchpoints or not. breakpoint_re_set takes care of promoting
454 watchpoints to hardware watchpoints if possible, however, if this
455 new inferior doesn't load shared libraries or we don't pull in
456 symbols from any other source on this target/arch,
457 breakpoint_re_set is never called. Call it now so that software
458 watchpoints get a chance to be promoted to hardware watchpoints
459 if the now pushed target supports hardware watchpoints. */
460 breakpoint_re_set ();
462 observer_notify_inferior_created (target, from_tty);
465 /* Kill the inferior if already running. This function is designed
466 to be called when we are about to start the execution of the program
467 from the beginning. Ask the user to confirm that he wants to restart
468 the program being debugged when FROM_TTY is non-null. */
471 kill_if_already_running (int from_tty)
473 if (! ptid_equal (inferior_ptid, null_ptid) && target_has_execution)
475 /* Bail out before killing the program if we will not be able to
477 target_require_runnable ();
480 && !query (_("The program being debugged has been started already.\n\
481 Start it from the beginning? ")))
482 error (_("Program not restarted."));
487 /* Implement the "run" command. If TBREAK_AT_MAIN is set, then insert
488 a temporary breakpoint at the begining of the main program before
489 running the program. */
492 run_command_1 (char *args, int from_tty, int tbreak_at_main)
495 struct cleanup *old_chain;
500 kill_if_already_running (from_tty);
502 init_wait_for_inferior ();
503 clear_breakpoint_hit_counts ();
505 /* Clean up any leftovers from other runs. Some other things from
506 this function should probably be moved into target_pre_inferior. */
507 target_pre_inferior (from_tty);
509 /* The comment here used to read, "The exec file is re-read every
510 time we do a generic_mourn_inferior, so we just have to worry
511 about the symbol file." The `generic_mourn_inferior' function
512 gets called whenever the program exits. However, suppose the
513 program exits, and *then* the executable file changes? We need
514 to check again here. Since reopen_exec_file doesn't do anything
515 if the timestamp hasn't changed, I don't see the harm. */
519 /* Insert the temporary breakpoint if a location was specified. */
521 tbreak_command (main_name (), 0);
523 exec_file = (char *) get_exec_file (0);
525 if (non_stop && !target_supports_non_stop ())
526 error (_("The target does not support running in non-stop mode."));
528 /* We keep symbols from add-symbol-file, on the grounds that the
529 user might want to add some symbols before running the program
530 (right?). But sometimes (dynamic loading where the user manually
531 introduces the new symbols with add-symbol-file), the code which
532 the symbols describe does not persist between runs. Currently
533 the user has to manually nuke all symbols between runs if they
534 want them to go away (PR 2207). This is probably reasonable. */
538 if (target_can_async_p ())
539 async_disable_stdin ();
543 int async_exec = strip_bg_char (&args);
545 /* If we get a request for running in the bg but the target
546 doesn't support it, error out. */
547 if (async_exec && !target_can_async_p ())
548 error (_("Asynchronous execution not supported on this target."));
550 /* If we don't get a request of running in the bg, then we need
551 to simulate synchronous (fg) execution. */
552 if (!async_exec && target_can_async_p ())
554 /* Simulate synchronous execution. */
555 async_disable_stdin ();
558 /* If there were other args, beside '&', process them. */
560 set_inferior_args (args);
565 ui_out_field_string (uiout, NULL, "Starting program");
566 ui_out_text (uiout, ": ");
568 ui_out_field_string (uiout, "execfile", exec_file);
569 ui_out_spaces (uiout, 1);
570 /* We call get_inferior_args() because we might need to compute
572 ui_out_field_string (uiout, "infargs", get_inferior_args ());
573 ui_out_text (uiout, "\n");
574 ui_out_flush (uiout);
577 /* We call get_inferior_args() because we might need to compute
579 target_create_inferior (exec_file, get_inferior_args (),
580 environ_vector (current_inferior ()->environment),
583 /* We're starting off a new process. When we get out of here, in
584 non-stop mode, finish the state of all threads of that process,
585 but leave other threads alone, as they may be stopped in internal
586 events --- the frontend shouldn't see them as stopped. In
587 all-stop, always finish the state of all threads, as we may be
588 resuming more than just the new process. */
590 ptid = pid_to_ptid (ptid_get_pid (inferior_ptid));
592 ptid = minus_one_ptid;
593 old_chain = make_cleanup (finish_thread_state_cleanup, &ptid);
595 /* Pass zero for FROM_TTY, because at this point the "run" command
596 has done its thing; now we are setting up the running program. */
597 post_create_inferior (¤t_target, 0);
599 /* Start the target running. Do not use -1 continuation as it would skip
600 breakpoint right at the entry point. */
601 proceed (regcache_read_pc (get_current_regcache ()), TARGET_SIGNAL_0, 0);
603 /* Since there was no error, there's no need to finish the thread
605 discard_cleanups (old_chain);
609 run_command (char *args, int from_tty)
611 run_command_1 (args, from_tty, 0);
615 run_no_args_command (char *args, int from_tty)
617 set_inferior_args ("");
621 /* Start the execution of the program up until the beginning of the main
625 start_command (char *args, int from_tty)
627 /* Some languages such as Ada need to search inside the program
628 minimal symbols for the location where to put the temporary
629 breakpoint before starting. */
630 if (!have_minimal_symbols ())
631 error (_("No symbol table loaded. Use the \"file\" command."));
633 /* Run the program until reaching the main procedure... */
634 run_command_1 (args, from_tty, 1);
638 proceed_thread_callback (struct thread_info *thread, void *arg)
640 /* We go through all threads individually instead of compressing
641 into a single target `resume_all' request, because some threads
642 may be stopped in internal breakpoints/events, or stopped waiting
643 for its turn in the displaced stepping queue (that is, they are
644 running && !executing). The target side has no idea about why
645 the thread is stopped, so a `resume_all' command would resume too
646 much. If/when GDB gains a way to tell the target `hold this
647 thread stopped until I say otherwise', then we can optimize
649 if (!is_stopped (thread->ptid))
652 switch_to_thread (thread->ptid);
653 clear_proceed_status ();
654 proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0);
659 ensure_valid_thread (void)
661 if (ptid_equal (inferior_ptid, null_ptid)
662 || is_exited (inferior_ptid))
663 error (_("Cannot execute this command without a live selected thread."));
666 /* If the user is looking at trace frames, any resumption of execution
667 is likely to mix up recorded and live target data. So simply
668 disallow those commands. */
671 ensure_not_tfind_mode (void)
673 if (get_traceframe_number () >= 0)
674 error (_("Cannot execute this command while looking at trace frames."));
678 continue_1 (int all_threads)
681 ensure_not_tfind_mode ();
683 if (non_stop && all_threads)
685 /* Don't error out if the current thread is running, because
686 there may be other stopped threads. */
687 struct cleanup *old_chain;
689 /* Backup current thread and selected frame. */
690 old_chain = make_cleanup_restore_current_thread ();
692 iterate_over_threads (proceed_thread_callback, NULL);
694 /* Restore selected ptid. */
695 do_cleanups (old_chain);
699 ensure_valid_thread ();
700 ensure_not_running ();
701 clear_proceed_status ();
702 proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0);
706 /* continue [-a] [proceed-count] [&] */
708 continue_command (char *args, int from_tty)
714 /* Find out whether we must run in the background. */
716 async_exec = strip_bg_char (&args);
718 /* If we must run in the background, but the target can't do it,
720 if (async_exec && !target_can_async_p ())
721 error (_("Asynchronous execution not supported on this target."));
723 /* If we are not asked to run in the bg, then prepare to run in the
724 foreground, synchronously. */
725 if (!async_exec && target_can_async_p ())
727 /* Simulate synchronous execution. */
728 async_disable_stdin ();
733 if (strncmp (args, "-a", sizeof ("-a") - 1) == 0)
736 args += sizeof ("-a") - 1;
742 if (!non_stop && all_threads)
743 error (_("`-a' is meaningless in all-stop mode."));
745 if (args != NULL && all_threads)
746 error (_("Can't resume all threads and specify "
747 "proceed count simultaneously."));
749 /* If we have an argument left, set proceed count of breakpoint we
756 struct thread_info *tp;
759 tp = find_thread_ptid (inferior_ptid);
763 struct target_waitstatus ws;
765 get_last_target_status (&last_ptid, &ws);
766 tp = find_thread_ptid (last_ptid);
769 bs = tp->control.stop_bpstat;
771 while ((stat = bpstat_num (&bs, &num)) != 0)
774 set_ignore_count (num,
775 parse_and_eval_long (args) - 1,
777 /* set_ignore_count prints a message ending with a period.
778 So print two spaces before "Continuing.". */
780 printf_filtered (" ");
784 if (!stopped && from_tty)
787 ("Not stopped at any breakpoint; argument ignored.\n");
792 printf_filtered (_("Continuing.\n"));
794 continue_1 (all_threads);
797 /* Record the starting point of a "step" or "next" command. */
800 set_step_frame (void)
802 struct symtab_and_line sal;
804 find_frame_sal (get_current_frame (), &sal);
805 set_step_info (get_current_frame (), sal);
808 /* Step until outside of current statement. */
811 step_command (char *count_string, int from_tty)
813 step_1 (0, 0, count_string);
816 /* Likewise, but skip over subroutine calls as if single instructions. */
819 next_command (char *count_string, int from_tty)
821 step_1 (1, 0, count_string);
824 /* Likewise, but step only one instruction. */
827 stepi_command (char *count_string, int from_tty)
829 step_1 (0, 1, count_string);
833 nexti_command (char *count_string, int from_tty)
835 step_1 (1, 1, count_string);
839 delete_longjmp_breakpoint_cleanup (void *arg)
841 int thread = * (int *) arg;
842 delete_longjmp_breakpoint (thread);
846 step_1 (int skip_subroutines, int single_inst, char *count_string)
849 struct cleanup *cleanups = make_cleanup (null_cleanup, NULL);
854 ensure_not_tfind_mode ();
855 ensure_valid_thread ();
856 ensure_not_running ();
859 async_exec = strip_bg_char (&count_string);
861 /* If we get a request for running in the bg but the target
862 doesn't support it, error out. */
863 if (async_exec && !target_can_async_p ())
864 error (_("Asynchronous execution not supported on this target."));
866 /* If we don't get a request of running in the bg, then we need
867 to simulate synchronous (fg) execution. */
868 if (!async_exec && target_can_async_p ())
870 /* Simulate synchronous execution. */
871 async_disable_stdin ();
874 count = count_string ? parse_and_eval_long (count_string) : 1;
876 if (!single_inst || skip_subroutines) /* Leave si command alone. */
878 struct thread_info *tp = inferior_thread ();
880 if (in_thread_list (inferior_ptid))
881 thread = pid_to_thread_id (inferior_ptid);
883 set_longjmp_breakpoint (tp, get_frame_id (get_current_frame ()));
885 make_cleanup (delete_longjmp_breakpoint_cleanup, &thread);
888 /* In synchronous case, all is well; each step_once call will step once. */
889 if (!target_can_async_p ())
891 for (; count > 0; count--)
893 step_once (skip_subroutines, single_inst, count, thread);
895 if (!target_has_execution)
899 struct thread_info *tp = inferior_thread ();
901 if (!tp->control.stop_step || !tp->step_multi)
903 /* If we stopped for some reason that is not stepping
904 there are no further steps to make. */
911 do_cleanups (cleanups);
915 /* In the case of an asynchronous target things get complicated;
916 do only one step for now, before returning control to the
917 event loop. Let the continuation figure out how many other
918 steps we need to do, and handle them one at the time, through
920 step_once (skip_subroutines, single_inst, count, thread);
922 /* We are running, and the continuation is installed. It will
923 disable the longjmp breakpoint as appropriate. */
924 discard_cleanups (cleanups);
928 struct step_1_continuation_args
931 int skip_subroutines;
936 /* Called after we are done with one step operation, to check whether
937 we need to step again, before we print the prompt and return control
938 to the user. If count is > 1, we will need to do one more call to
939 proceed(), via step_once(). Basically it is like step_once and
940 step_1_continuation are co-recursive. */
942 step_1_continuation (void *args)
944 struct step_1_continuation_args *a = args;
946 if (target_has_execution)
948 struct thread_info *tp;
950 tp = inferior_thread ();
951 if (tp->step_multi && tp->control.stop_step)
953 /* There are more steps to make, and we did stop due to
954 ending a stepping range. Do another step. */
955 step_once (a->skip_subroutines, a->single_inst,
956 a->count - 1, a->thread);
962 /* We either stopped for some reason that is not stepping, or there
963 are no further steps to make. Cleanup. */
964 if (!a->single_inst || a->skip_subroutines)
965 delete_longjmp_breakpoint (a->thread);
968 /* Do just one step operation. This is useful to implement the 'step
969 n' kind of commands. In case of asynchronous targets, we will have
970 to set up a continuation to be done after the target stops (after
971 this one step). For synch targets, the caller handles further
975 step_once (int skip_subroutines, int single_inst, int count, int thread)
977 struct frame_info *frame = get_current_frame ();
981 /* Don't assume THREAD is a valid thread id. It is set to -1 if
982 the longjmp breakpoint was not required. Use the
983 INFERIOR_PTID thread instead, which is the same thread when
985 struct thread_info *tp = inferior_thread ();
987 clear_proceed_status ();
994 /* Step at an inlined function behaves like "down". */
995 if (!skip_subroutines && !single_inst
996 && inline_skipped_frames (inferior_ptid))
1000 /* Pretend that we've ran. */
1001 resume_ptid = user_visible_resume_ptid (1);
1002 set_running (resume_ptid, 1);
1004 step_into_inline_frame (inferior_ptid);
1006 step_once (skip_subroutines, single_inst, count - 1, thread);
1009 /* Pretend that we've stopped. */
1012 if (target_can_async_p ())
1013 inferior_event_handler (INF_EXEC_COMPLETE, NULL);
1018 pc = get_frame_pc (frame);
1019 find_pc_line_pc_range (pc,
1020 &tp->control.step_range_start,
1021 &tp->control.step_range_end);
1023 /* If we have no line info, switch to stepi mode. */
1024 if (tp->control.step_range_end == 0 && step_stop_if_no_debug)
1025 tp->control.step_range_start = tp->control.step_range_end = 1;
1026 else if (tp->control.step_range_end == 0)
1030 if (find_pc_partial_function (pc, &name,
1031 &tp->control.step_range_start,
1032 &tp->control.step_range_end) == 0)
1033 error (_("Cannot find bounds of current function"));
1035 target_terminal_ours ();
1036 printf_filtered (_("Single stepping until exit from function %s,"
1037 "\nwhich has no line number information.\n"),
1043 /* Say we are stepping, but stop after one insn whatever it does. */
1044 tp->control.step_range_start = tp->control.step_range_end = 1;
1045 if (!skip_subroutines)
1047 Don't step over function calls, not even to functions lacking
1049 tp->control.step_over_calls = STEP_OVER_NONE;
1052 if (skip_subroutines)
1053 tp->control.step_over_calls = STEP_OVER_ALL;
1055 tp->step_multi = (count > 1);
1056 proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 1);
1058 /* For async targets, register a continuation to do any
1059 additional steps. For sync targets, the caller will handle
1060 further stepping. */
1061 if (target_can_async_p ())
1063 struct step_1_continuation_args *args;
1065 args = xmalloc (sizeof (*args));
1066 args->skip_subroutines = skip_subroutines;
1067 args->single_inst = single_inst;
1068 args->count = count;
1069 args->thread = thread;
1071 add_intermediate_continuation (tp, step_1_continuation, args, xfree);
1077 /* Continue program at specified address. */
1080 jump_command (char *arg, int from_tty)
1082 struct gdbarch *gdbarch = get_current_arch ();
1084 struct symtabs_and_lines sals;
1085 struct symtab_and_line sal;
1091 ensure_not_tfind_mode ();
1092 ensure_valid_thread ();
1093 ensure_not_running ();
1095 /* Find out whether we must run in the background. */
1097 async_exec = strip_bg_char (&arg);
1099 /* If we must run in the background, but the target can't do it,
1101 if (async_exec && !target_can_async_p ())
1102 error (_("Asynchronous execution not supported on this target."));
1105 error_no_arg (_("starting address"));
1107 sals = decode_line_spec_1 (arg, 1);
1108 if (sals.nelts != 1)
1110 error (_("Unreasonable jump request"));
1116 if (sal.symtab == 0 && sal.pc == 0)
1117 error (_("No source file has been specified."));
1119 resolve_sal_pc (&sal); /* May error out. */
1121 /* See if we are trying to jump to another function. */
1122 fn = get_frame_function (get_current_frame ());
1123 sfn = find_pc_function (sal.pc);
1124 if (fn != NULL && sfn != fn)
1126 if (!query (_("Line %d is not in `%s'. Jump anyway? "), sal.line,
1127 SYMBOL_PRINT_NAME (fn)))
1129 error (_("Not confirmed."));
1136 fixup_symbol_section (sfn, 0);
1137 if (section_is_overlay (SYMBOL_OBJ_SECTION (sfn)) &&
1138 !section_is_mapped (SYMBOL_OBJ_SECTION (sfn)))
1140 if (!query (_("WARNING!!! Destination is in "
1141 "unmapped overlay! Jump anyway? ")))
1143 error (_("Not confirmed."));
1153 printf_filtered (_("Continuing at "));
1154 fputs_filtered (paddress (gdbarch, addr), gdb_stdout);
1155 printf_filtered (".\n");
1158 /* If we are not asked to run in the bg, then prepare to run in the
1159 foreground, synchronously. */
1160 if (!async_exec && target_can_async_p ())
1162 /* Simulate synchronous execution. */
1163 async_disable_stdin ();
1166 clear_proceed_status ();
1167 proceed (addr, TARGET_SIGNAL_0, 0);
1171 /* Go to line or address in current procedure. */
1173 go_command (char *line_no, int from_tty)
1175 if (line_no == (char *) NULL || !*line_no)
1176 printf_filtered (_("Usage: go <location>\n"));
1179 tbreak_command (line_no, from_tty);
1180 jump_command (line_no, from_tty);
1185 /* Continue program giving it specified signal. */
1188 signal_command (char *signum_exp, int from_tty)
1190 enum target_signal oursig;
1193 dont_repeat (); /* Too dangerous. */
1195 ensure_not_tfind_mode ();
1196 ensure_valid_thread ();
1197 ensure_not_running ();
1199 /* Find out whether we must run in the background. */
1200 if (signum_exp != NULL)
1201 async_exec = strip_bg_char (&signum_exp);
1203 /* If we must run in the background, but the target can't do it,
1205 if (async_exec && !target_can_async_p ())
1206 error (_("Asynchronous execution not supported on this target."));
1208 /* If we are not asked to run in the bg, then prepare to run in the
1209 foreground, synchronously. */
1210 if (!async_exec && target_can_async_p ())
1212 /* Simulate synchronous execution. */
1213 async_disable_stdin ();
1217 error_no_arg (_("signal number"));
1219 /* It would be even slicker to make signal names be valid expressions,
1220 (the type could be "enum $signal" or some such), then the user could
1221 assign them to convenience variables. */
1222 oursig = target_signal_from_name (signum_exp);
1224 if (oursig == TARGET_SIGNAL_UNKNOWN)
1226 /* No, try numeric. */
1227 int num = parse_and_eval_long (signum_exp);
1230 oursig = TARGET_SIGNAL_0;
1232 oursig = target_signal_from_command (num);
1237 if (oursig == TARGET_SIGNAL_0)
1238 printf_filtered (_("Continuing with no signal.\n"));
1240 printf_filtered (_("Continuing with signal %s.\n"),
1241 target_signal_to_name (oursig));
1244 clear_proceed_status ();
1245 proceed ((CORE_ADDR) -1, oursig, 0);
1248 /* A continuation callback for until_next_command. */
1251 until_next_continuation (void *arg)
1253 struct thread_info *tp = arg;
1255 delete_longjmp_breakpoint (tp->num);
1258 /* Proceed until we reach a different source line with pc greater than
1259 our current one or exit the function. We skip calls in both cases.
1261 Note that eventually this command should probably be changed so
1262 that only source lines are printed out when we hit the breakpoint
1263 we set. This may involve changes to wait_for_inferior and the
1264 proceed status code. */
1267 until_next_command (int from_tty)
1269 struct frame_info *frame;
1271 struct symbol *func;
1272 struct symtab_and_line sal;
1273 struct thread_info *tp = inferior_thread ();
1274 int thread = tp->num;
1275 struct cleanup *old_chain;
1277 clear_proceed_status ();
1280 frame = get_current_frame ();
1282 /* Step until either exited from this function or greater
1283 than the current line (if in symbolic section) or pc (if
1286 pc = get_frame_pc (frame);
1287 func = find_pc_function (pc);
1291 struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (pc);
1293 if (msymbol == NULL)
1294 error (_("Execution is not within a known function."));
1296 tp->control.step_range_start = SYMBOL_VALUE_ADDRESS (msymbol);
1297 tp->control.step_range_end = pc;
1301 sal = find_pc_line (pc, 0);
1303 tp->control.step_range_start = BLOCK_START (SYMBOL_BLOCK_VALUE (func));
1304 tp->control.step_range_end = sal.end;
1307 tp->control.step_over_calls = STEP_OVER_ALL;
1309 tp->step_multi = 0; /* Only one call to proceed */
1311 set_longjmp_breakpoint (tp, get_frame_id (frame));
1312 old_chain = make_cleanup (delete_longjmp_breakpoint_cleanup, &thread);
1314 proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 1);
1316 if (target_can_async_p () && is_running (inferior_ptid))
1318 discard_cleanups (old_chain);
1319 add_continuation (tp, until_next_continuation, tp, NULL);
1322 do_cleanups (old_chain);
1326 until_command (char *arg, int from_tty)
1331 ensure_not_tfind_mode ();
1332 ensure_valid_thread ();
1333 ensure_not_running ();
1335 /* Find out whether we must run in the background. */
1337 async_exec = strip_bg_char (&arg);
1339 /* If we must run in the background, but the target can't do it,
1341 if (async_exec && !target_can_async_p ())
1342 error (_("Asynchronous execution not supported on this target."));
1344 /* If we are not asked to run in the bg, then prepare to run in the
1345 foreground, synchronously. */
1346 if (!async_exec && target_can_async_p ())
1348 /* Simulate synchronous execution. */
1349 async_disable_stdin ();
1353 until_break_command (arg, from_tty, 0);
1355 until_next_command (from_tty);
1359 advance_command (char *arg, int from_tty)
1364 ensure_not_tfind_mode ();
1365 ensure_valid_thread ();
1366 ensure_not_running ();
1369 error_no_arg (_("a location"));
1371 /* Find out whether we must run in the background. */
1373 async_exec = strip_bg_char (&arg);
1375 /* If we must run in the background, but the target can't do it,
1377 if (async_exec && !target_can_async_p ())
1378 error (_("Asynchronous execution not supported on this target."));
1380 /* If we are not asked to run in the bg, then prepare to run in the
1381 foreground, synchronously. */
1382 if (!async_exec && target_can_async_p ())
1384 /* Simulate synchronous execution. */
1385 async_disable_stdin ();
1388 until_break_command (arg, from_tty, 1);
1391 /* Print the result of a function at the end of a 'finish' command. */
1394 print_return_value (struct type *func_type, struct type *value_type)
1396 struct gdbarch *gdbarch = get_regcache_arch (stop_registers);
1397 struct cleanup *old_chain;
1398 struct ui_stream *stb;
1399 struct value *value;
1401 CHECK_TYPEDEF (value_type);
1402 gdb_assert (TYPE_CODE (value_type) != TYPE_CODE_VOID);
1404 /* FIXME: 2003-09-27: When returning from a nested inferior function
1405 call, it's possible (with no help from the architecture vector)
1406 to locate and return/print a "struct return" value. This is just
1407 a more complicated case of what is already being done in the
1408 inferior function call code. In fact, when inferior function
1409 calls are made async, this will likely be made the norm. */
1411 switch (gdbarch_return_value (gdbarch, func_type, value_type,
1414 case RETURN_VALUE_REGISTER_CONVENTION:
1415 case RETURN_VALUE_ABI_RETURNS_ADDRESS:
1416 case RETURN_VALUE_ABI_PRESERVES_ADDRESS:
1417 value = allocate_value (value_type);
1418 gdbarch_return_value (gdbarch, func_type, value_type, stop_registers,
1419 value_contents_raw (value), NULL);
1421 case RETURN_VALUE_STRUCT_CONVENTION:
1425 internal_error (__FILE__, __LINE__, _("bad switch"));
1430 struct value_print_options opts;
1433 stb = ui_out_stream_new (uiout);
1434 old_chain = make_cleanup_ui_out_stream_delete (stb);
1435 ui_out_text (uiout, "Value returned is ");
1436 ui_out_field_fmt (uiout, "gdb-result-var", "$%d",
1437 record_latest_value (value));
1438 ui_out_text (uiout, " = ");
1439 get_raw_print_options (&opts);
1440 value_print (value, stb->stream, &opts);
1441 ui_out_field_stream (uiout, "return-value", stb);
1442 ui_out_text (uiout, "\n");
1443 do_cleanups (old_chain);
1447 ui_out_text (uiout, "Value returned has type: ");
1448 ui_out_field_string (uiout, "return-type", TYPE_NAME (value_type));
1449 ui_out_text (uiout, ".");
1450 ui_out_text (uiout, " Cannot determine contents\n");
1454 /* Stuff that needs to be done by the finish command after the target
1455 has stopped. In asynchronous mode, we wait for the target to stop
1456 in the call to poll or select in the event loop, so it is
1457 impossible to do all the stuff as part of the finish_command
1458 function itself. The only chance we have to complete this command
1459 is in fetch_inferior_event, which is called by the event loop as
1460 soon as it detects that the target has stopped. This function is
1461 called via the cmd_continuation pointer. */
1463 struct finish_command_continuation_args
1465 struct breakpoint *breakpoint;
1466 struct symbol *function;
1470 finish_command_continuation (void *arg)
1472 struct finish_command_continuation_args *a = arg;
1473 struct thread_info *tp = NULL;
1476 if (!ptid_equal (inferior_ptid, null_ptid)
1477 && target_has_execution
1478 && is_stopped (inferior_ptid))
1480 tp = inferior_thread ();
1481 bs = tp->control.stop_bpstat;
1484 if (bpstat_find_breakpoint (bs, a->breakpoint) != NULL
1485 && a->function != NULL)
1487 struct type *value_type;
1489 value_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (a->function));
1491 internal_error (__FILE__, __LINE__,
1492 _("finish_command: function has no target type"));
1494 if (TYPE_CODE (value_type) != TYPE_CODE_VOID)
1496 volatile struct gdb_exception ex;
1498 TRY_CATCH (ex, RETURN_MASK_ALL)
1500 /* print_return_value can throw an exception in some
1501 circumstances. We need to catch this so that we still
1502 delete the breakpoint. */
1503 print_return_value (SYMBOL_TYPE (a->function), value_type);
1506 exception_print (gdb_stdout, ex);
1510 /* We suppress normal call of normal_stop observer and do it here so
1511 that the *stopped notification includes the return value. */
1512 if (bs != NULL && tp->control.proceed_to_finish)
1513 observer_notify_normal_stop (bs, 1 /* print frame */);
1514 delete_breakpoint (a->breakpoint);
1515 delete_longjmp_breakpoint (inferior_thread ()->num);
1519 finish_command_continuation_free_arg (void *arg)
1524 /* finish_backward -- helper function for finish_command. */
1527 finish_backward (struct symbol *function)
1529 struct symtab_and_line sal;
1530 struct thread_info *tp = inferior_thread ();
1531 struct breakpoint *breakpoint;
1532 struct cleanup *old_chain;
1534 CORE_ADDR func_addr;
1537 pc = get_frame_pc (get_current_frame ());
1539 if (find_pc_partial_function (pc, NULL, &func_addr, NULL) == 0)
1540 internal_error (__FILE__, __LINE__,
1541 _("Finish: couldn't find function."));
1543 sal = find_pc_line (func_addr, 0);
1545 /* We don't need a return value. */
1546 tp->control.proceed_to_finish = 0;
1547 /* Special case: if we're sitting at the function entry point,
1548 then all we need to do is take a reverse singlestep. We
1549 don't need to set a breakpoint, and indeed it would do us
1552 Note that this can only happen at frame #0, since there's
1553 no way that a function up the stack can have a return address
1554 that's equal to its entry point. */
1558 struct frame_info *frame = get_selected_frame (NULL);
1559 struct gdbarch *gdbarch = get_frame_arch (frame);
1561 /* Set breakpoint and continue. */
1563 set_momentary_breakpoint (gdbarch, sal,
1564 get_stack_frame_id (frame),
1566 /* Tell the breakpoint to keep quiet. We won't be done
1567 until we've done another reverse single-step. */
1568 breakpoint_set_silent (breakpoint, 1);
1569 old_chain = make_cleanup_delete_breakpoint (breakpoint);
1570 proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0);
1571 /* We will be stopped when proceed returns. */
1572 back_up = (bpstat_find_breakpoint (tp->control.stop_bpstat, breakpoint)
1574 do_cleanups (old_chain);
1580 /* If in fact we hit the step-resume breakpoint (and not
1581 some other breakpoint), then we're almost there --
1582 we just need to back up by one more single-step. */
1583 tp->control.step_range_start = tp->control.step_range_end = 1;
1584 proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 1);
1589 /* finish_forward -- helper function for finish_command. */
1592 finish_forward (struct symbol *function, struct frame_info *frame)
1594 struct gdbarch *gdbarch = get_frame_arch (frame);
1595 struct symtab_and_line sal;
1596 struct thread_info *tp = inferior_thread ();
1597 struct breakpoint *breakpoint;
1598 struct cleanup *old_chain;
1599 struct finish_command_continuation_args *cargs;
1600 int thread = tp->num;
1602 sal = find_pc_line (get_frame_pc (frame), 0);
1603 sal.pc = get_frame_pc (frame);
1605 breakpoint = set_momentary_breakpoint (gdbarch, sal,
1606 get_stack_frame_id (frame),
1609 old_chain = make_cleanup_delete_breakpoint (breakpoint);
1611 set_longjmp_breakpoint (tp, get_frame_id (frame));
1612 make_cleanup (delete_longjmp_breakpoint_cleanup, &thread);
1614 /* We want stop_registers, please... */
1615 tp->control.proceed_to_finish = 1;
1616 cargs = xmalloc (sizeof (*cargs));
1618 cargs->breakpoint = breakpoint;
1619 cargs->function = function;
1620 add_continuation (tp, finish_command_continuation, cargs,
1621 finish_command_continuation_free_arg);
1622 proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0);
1624 discard_cleanups (old_chain);
1625 if (!target_can_async_p ())
1626 do_all_continuations ();
1629 /* "finish": Set a temporary breakpoint at the place the selected
1630 frame will return to, then continue. */
1633 finish_command (char *arg, int from_tty)
1635 struct frame_info *frame;
1636 struct symbol *function;
1641 ensure_not_tfind_mode ();
1642 ensure_valid_thread ();
1643 ensure_not_running ();
1645 /* Find out whether we must run in the background. */
1647 async_exec = strip_bg_char (&arg);
1649 /* If we must run in the background, but the target can't do it,
1651 if (async_exec && !target_can_async_p ())
1652 error (_("Asynchronous execution not supported on this target."));
1654 /* Don't try to async in reverse. */
1655 if (async_exec && execution_direction == EXEC_REVERSE)
1656 error (_("Asynchronous 'finish' not supported in reverse."));
1658 /* If we are not asked to run in the bg, then prepare to run in the
1659 foreground, synchronously. */
1660 if (!async_exec && target_can_async_p ())
1662 /* Simulate synchronous execution. */
1663 async_disable_stdin ();
1667 error (_("The \"finish\" command does not take any arguments."));
1669 frame = get_prev_frame (get_selected_frame (_("No selected frame.")));
1671 error (_("\"finish\" not meaningful in the outermost frame."));
1673 clear_proceed_status ();
1675 /* Finishing from an inline frame is completely different. We don't
1676 try to show the "return value" - no way to locate it. So we do
1677 not need a completion. */
1678 if (get_frame_type (get_selected_frame (_("No selected frame.")))
1681 /* Claim we are stepping in the calling frame. An empty step
1682 range means that we will stop once we aren't in a function
1683 called by that frame. We don't use the magic "1" value for
1684 step_range_end, because then infrun will think this is nexti,
1685 and not step over the rest of this inlined function call. */
1686 struct thread_info *tp = inferior_thread ();
1687 struct symtab_and_line empty_sal;
1689 init_sal (&empty_sal);
1690 set_step_info (frame, empty_sal);
1691 tp->control.step_range_start = get_frame_pc (frame);
1692 tp->control.step_range_end = tp->control.step_range_start;
1693 tp->control.step_over_calls = STEP_OVER_ALL;
1695 /* Print info on the selected frame, including level number but not
1699 printf_filtered (_("Run till exit from "));
1700 print_stack_frame (get_selected_frame (NULL), 1, LOCATION);
1703 proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 1);
1707 /* Find the function we will return from. */
1709 function = find_pc_function (get_frame_pc (get_selected_frame (NULL)));
1711 /* Print info on the selected frame, including level number but not
1715 if (execution_direction == EXEC_REVERSE)
1716 printf_filtered (_("Run back to call of "));
1718 printf_filtered (_("Run till exit from "));
1720 print_stack_frame (get_selected_frame (NULL), 1, LOCATION);
1723 if (execution_direction == EXEC_REVERSE)
1724 finish_backward (function);
1726 finish_forward (function, frame);
1731 program_info (char *args, int from_tty)
1735 struct thread_info *tp;
1738 if (!target_has_execution)
1740 printf_filtered (_("The program being debugged is not being run.\n"));
1745 ptid = inferior_ptid;
1748 struct target_waitstatus ws;
1750 get_last_target_status (&ptid, &ws);
1753 if (ptid_equal (ptid, null_ptid) || is_exited (ptid))
1754 error (_("Invalid selected thread."));
1755 else if (is_running (ptid))
1756 error (_("Selected thread is running."));
1758 tp = find_thread_ptid (ptid);
1759 bs = tp->control.stop_bpstat;
1760 stat = bpstat_num (&bs, &num);
1762 target_files_info ();
1763 printf_filtered (_("Program stopped at %s.\n"),
1764 paddress (target_gdbarch, stop_pc));
1765 if (tp->control.stop_step)
1766 printf_filtered (_("It stopped after being stepped.\n"));
1769 /* There may be several breakpoints in the same place, so this
1770 isn't as strange as it seems. */
1775 printf_filtered (_("It stopped at a breakpoint "
1776 "that has since been deleted.\n"));
1779 printf_filtered (_("It stopped at breakpoint %d.\n"), num);
1780 stat = bpstat_num (&bs, &num);
1783 else if (tp->suspend.stop_signal != TARGET_SIGNAL_0)
1785 printf_filtered (_("It stopped with signal %s, %s.\n"),
1786 target_signal_to_name (tp->suspend.stop_signal),
1787 target_signal_to_string (tp->suspend.stop_signal));
1792 printf_filtered (_("Type \"info stack\" or \"info "
1793 "registers\" for more information.\n"));
1798 environment_info (char *var, int from_tty)
1802 char *val = get_in_environ (current_inferior ()->environment, var);
1806 puts_filtered (var);
1807 puts_filtered (" = ");
1808 puts_filtered (val);
1809 puts_filtered ("\n");
1813 puts_filtered ("Environment variable \"");
1814 puts_filtered (var);
1815 puts_filtered ("\" not defined.\n");
1820 char **vector = environ_vector (current_inferior ()->environment);
1824 puts_filtered (*vector++);
1825 puts_filtered ("\n");
1831 set_environment_command (char *arg, int from_tty)
1833 char *p, *val, *var;
1837 error_no_arg (_("environment variable and value"));
1839 /* Find seperation between variable name and value. */
1840 p = (char *) strchr (arg, '=');
1841 val = (char *) strchr (arg, ' ');
1843 if (p != 0 && val != 0)
1845 /* We have both a space and an equals. If the space is before the
1846 equals, walk forward over the spaces til we see a nonspace
1847 (possibly the equals). */
1852 /* Now if the = is after the char following the spaces,
1853 take the char following the spaces. */
1857 else if (val != 0 && p == 0)
1861 error_no_arg (_("environment variable to set"));
1863 if (p == 0 || p[1] == 0)
1867 p = arg + strlen (arg); /* So that savestring below will work. */
1871 /* Not setting variable value to null. */
1873 while (*val == ' ' || *val == '\t')
1877 while (p != arg && (p[-1] == ' ' || p[-1] == '\t'))
1880 var = savestring (arg, p - arg);
1883 printf_filtered (_("Setting environment variable "
1884 "\"%s\" to null value.\n"),
1886 set_in_environ (current_inferior ()->environment, var, "");
1889 set_in_environ (current_inferior ()->environment, var, val);
1894 unset_environment_command (char *var, int from_tty)
1898 /* If there is no argument, delete all environment variables.
1899 Ask for confirmation if reading from the terminal. */
1900 if (!from_tty || query (_("Delete all environment variables? ")))
1902 free_environ (current_inferior ()->environment);
1903 current_inferior ()->environment = make_environ ();
1907 unset_in_environ (current_inferior ()->environment, var);
1910 /* Handle the execution path (PATH variable). */
1912 static const char path_var_name[] = "PATH";
1915 path_info (char *args, int from_tty)
1917 puts_filtered ("Executable and object file path: ");
1918 puts_filtered (get_in_environ (current_inferior ()->environment,
1920 puts_filtered ("\n");
1923 /* Add zero or more directories to the front of the execution path. */
1926 path_command (char *dirname, int from_tty)
1932 env = get_in_environ (current_inferior ()->environment, path_var_name);
1933 /* Can be null if path is not set. */
1936 exec_path = xstrdup (env);
1937 mod_path (dirname, &exec_path);
1938 set_in_environ (current_inferior ()->environment, path_var_name, exec_path);
1941 path_info ((char *) NULL, from_tty);
1945 /* Print out the machine register regnum. If regnum is -1, print all
1946 registers (print_all == 1) or all non-float and non-vector
1947 registers (print_all == 0).
1949 For most machines, having all_registers_info() print the
1950 register(s) one per line is good enough. If a different format is
1951 required, (eg, for MIPS or Pyramid 90x, which both have lots of
1952 regs), or there is an existing convention for showing all the
1953 registers, define the architecture method PRINT_REGISTERS_INFO to
1954 provide that format. */
1957 default_print_registers_info (struct gdbarch *gdbarch,
1958 struct ui_file *file,
1959 struct frame_info *frame,
1960 int regnum, int print_all)
1963 const int numregs = gdbarch_num_regs (gdbarch)
1964 + gdbarch_num_pseudo_regs (gdbarch);
1966 for (i = 0; i < numregs; i++)
1968 struct type *regtype;
1971 /* Decide between printing all regs, non-float / vector regs, or
1977 if (!gdbarch_register_reggroup_p (gdbarch, i, all_reggroup))
1982 if (!gdbarch_register_reggroup_p (gdbarch, i, general_reggroup))
1992 /* If the register name is empty, it is undefined for this
1993 processor, so don't display anything. */
1994 if (gdbarch_register_name (gdbarch, i) == NULL
1995 || *(gdbarch_register_name (gdbarch, i)) == '\0')
1998 fputs_filtered (gdbarch_register_name (gdbarch, i), file);
1999 print_spaces_filtered (15 - strlen (gdbarch_register_name
2000 (gdbarch, i)), file);
2002 regtype = register_type (gdbarch, i);
2003 val = allocate_value (regtype);
2005 /* Get the data in raw format. */
2006 if (! frame_register_read (frame, i, value_contents_raw (val)))
2008 fprintf_filtered (file, "*value not available*\n");
2012 /* If virtual format is floating, print it that way, and in raw
2014 if (TYPE_CODE (regtype) == TYPE_CODE_FLT
2015 || TYPE_CODE (regtype) == TYPE_CODE_DECFLOAT)
2018 struct value_print_options opts;
2019 const gdb_byte *valaddr = value_contents_for_printing (val);
2021 get_user_print_options (&opts);
2025 value_contents_for_printing (val),
2026 value_embedded_offset (val), 0,
2027 file, 0, val, &opts, current_language);
2029 fprintf_filtered (file, "\t(raw 0x");
2030 for (j = 0; j < register_size (gdbarch, i); j++)
2034 if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG)
2037 idx = register_size (gdbarch, i) - 1 - j;
2038 fprintf_filtered (file, "%02x", (unsigned char) valaddr[idx]);
2040 fprintf_filtered (file, ")");
2044 struct value_print_options opts;
2046 /* Print the register in hex. */
2047 get_formatted_print_options (&opts, 'x');
2050 value_contents_for_printing (val),
2051 value_embedded_offset (val), 0,
2052 file, 0, val, &opts, current_language);
2053 /* If not a vector register, print it also according to its
2055 if (TYPE_VECTOR (regtype) == 0)
2057 get_user_print_options (&opts);
2059 fprintf_filtered (file, "\t");
2061 value_contents_for_printing (val),
2062 value_embedded_offset (val), 0,
2063 file, 0, val, &opts, current_language);
2067 fprintf_filtered (file, "\n");
2072 registers_info (char *addr_exp, int fpregs)
2074 struct frame_info *frame;
2075 struct gdbarch *gdbarch;
2077 if (!target_has_registers)
2078 error (_("The program has no registers now."));
2079 frame = get_selected_frame (NULL);
2080 gdbarch = get_frame_arch (frame);
2084 gdbarch_print_registers_info (gdbarch, gdb_stdout,
2089 while (*addr_exp != '\0')
2094 /* Keep skipping leading white space. */
2095 if (isspace ((*addr_exp)))
2101 /* Discard any leading ``$''. Check that there is something
2102 resembling a register following it. */
2103 if (addr_exp[0] == '$')
2105 if (isspace ((*addr_exp)) || (*addr_exp) == '\0')
2106 error (_("Missing register name"));
2108 /* Find the start/end of this register name/num/group. */
2110 while ((*addr_exp) != '\0' && !isspace ((*addr_exp)))
2114 /* Figure out what we've found and display it. */
2116 /* A register name? */
2118 int regnum = user_reg_map_name_to_regnum (gdbarch, start, end - start);
2122 /* User registers lie completely outside of the range of
2123 normal registers. Catch them early so that the target
2125 if (regnum >= gdbarch_num_regs (gdbarch)
2126 + gdbarch_num_pseudo_regs (gdbarch))
2128 struct value_print_options opts;
2129 struct value *val = value_of_user_reg (regnum, frame);
2131 printf_filtered ("%s: ", start);
2132 get_formatted_print_options (&opts, 'x');
2133 val_print_scalar_formatted (check_typedef (value_type (val)),
2134 value_contents_for_printing (val),
2135 value_embedded_offset (val),
2137 &opts, 0, gdb_stdout);
2138 printf_filtered ("\n");
2141 gdbarch_print_registers_info (gdbarch, gdb_stdout,
2142 frame, regnum, fpregs);
2147 /* A register group? */
2149 struct reggroup *group;
2151 for (group = reggroup_next (gdbarch, NULL);
2153 group = reggroup_next (gdbarch, group))
2155 /* Don't bother with a length check. Should the user
2156 enter a short register group name, go with the first
2157 group that matches. */
2158 if (strncmp (start, reggroup_name (group), end - start) == 0)
2166 regnum < gdbarch_num_regs (gdbarch)
2167 + gdbarch_num_pseudo_regs (gdbarch);
2170 if (gdbarch_register_reggroup_p (gdbarch, regnum, group))
2171 gdbarch_print_registers_info (gdbarch,
2179 /* Nothing matched. */
2180 error (_("Invalid register `%.*s'"), (int) (end - start), start);
2185 all_registers_info (char *addr_exp, int from_tty)
2187 registers_info (addr_exp, 1);
2191 nofp_registers_info (char *addr_exp, int from_tty)
2193 registers_info (addr_exp, 0);
2197 print_vector_info (struct ui_file *file,
2198 struct frame_info *frame, const char *args)
2200 struct gdbarch *gdbarch = get_frame_arch (frame);
2202 if (gdbarch_print_vector_info_p (gdbarch))
2203 gdbarch_print_vector_info (gdbarch, file, frame, args);
2207 int printed_something = 0;
2210 regnum < gdbarch_num_regs (gdbarch)
2211 + gdbarch_num_pseudo_regs (gdbarch);
2214 if (gdbarch_register_reggroup_p (gdbarch, regnum, vector_reggroup))
2216 printed_something = 1;
2217 gdbarch_print_registers_info (gdbarch, file, frame, regnum, 1);
2220 if (!printed_something)
2221 fprintf_filtered (file, "No vector information\n");
2226 vector_info (char *args, int from_tty)
2228 if (!target_has_registers)
2229 error (_("The program has no registers now."));
2231 print_vector_info (gdb_stdout, get_selected_frame (NULL), args);
2234 /* Kill the inferior process. Make us have no inferior. */
2237 kill_command (char *arg, int from_tty)
2239 /* FIXME: This should not really be inferior_ptid (or target_has_execution).
2240 It should be a distinct flag that indicates that a target is active, cuz
2241 some targets don't have processes! */
2243 if (ptid_equal (inferior_ptid, null_ptid))
2244 error (_("The program is not being run."));
2245 if (!query (_("Kill the program being debugged? ")))
2246 error (_("Not confirmed."));
2249 /* If we still have other inferiors to debug, then don't mess with
2250 with their threads. */
2251 if (!have_inferiors ())
2253 init_thread_list (); /* Destroy thread info. */
2255 /* Killing off the inferior can leave us with a core file. If
2256 so, print the state we are left in. */
2257 if (target_has_stack)
2259 printf_filtered (_("In %s,\n"), target_longname);
2260 print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC);
2263 bfd_cache_close_all ();
2266 /* Used in `attach&' command. ARG is a point to an integer
2267 representing a process id. Proceed threads of this process iff
2268 they stopped due to debugger request, and when they did, they
2269 reported a clean stop (TARGET_SIGNAL_0). Do not proceed threads
2270 that have been explicitly been told to stop. */
2273 proceed_after_attach_callback (struct thread_info *thread,
2276 int pid = * (int *) arg;
2278 if (ptid_get_pid (thread->ptid) == pid
2279 && !is_exited (thread->ptid)
2280 && !is_executing (thread->ptid)
2281 && !thread->stop_requested
2282 && thread->suspend.stop_signal == TARGET_SIGNAL_0)
2284 switch_to_thread (thread->ptid);
2285 clear_proceed_status ();
2286 proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0);
2293 proceed_after_attach (int pid)
2295 /* Don't error out if the current thread is running, because
2296 there may be other stopped threads. */
2297 struct cleanup *old_chain;
2299 /* Backup current thread and selected frame. */
2300 old_chain = make_cleanup_restore_current_thread ();
2302 iterate_over_threads (proceed_after_attach_callback, &pid);
2304 /* Restore selected ptid. */
2305 do_cleanups (old_chain);
2310 * Should save/restore the tty state since it might be that the
2311 * program to be debugged was started on this tty and it wants
2312 * the tty in some state other than what we want. If it's running
2313 * on another terminal or without a terminal, then saving and
2314 * restoring the tty state is a harmless no-op.
2315 * This only needs to be done if we are attaching to a process.
2318 /* attach_command --
2319 takes a program started up outside of gdb and ``attaches'' to it.
2320 This stops it cold in its tracks and allows us to start debugging it.
2321 and wait for the trace-trap that results from attaching. */
2324 attach_command_post_wait (char *args, int from_tty, int async_exec)
2327 char *full_exec_path = NULL;
2328 struct inferior *inferior;
2330 inferior = current_inferior ();
2331 inferior->control.stop_soon = NO_STOP_QUIETLY;
2333 /* If no exec file is yet known, try to determine it from the
2335 exec_file = (char *) get_exec_file (0);
2338 exec_file = target_pid_to_exec_file (PIDGET (inferior_ptid));
2341 /* It's possible we don't have a full path, but rather just a
2342 filename. Some targets, such as HP-UX, don't provide the
2345 Attempt to qualify the filename against the source path.
2346 (If that fails, we'll just fall back on the original
2347 filename. Not much more we can do...) */
2349 if (!source_full_path_of (exec_file, &full_exec_path))
2350 full_exec_path = xstrdup (exec_file);
2352 exec_file_attach (full_exec_path, from_tty);
2353 symbol_file_add_main (full_exec_path, from_tty);
2358 reopen_exec_file ();
2362 /* Take any necessary post-attaching actions for this platform. */
2363 target_post_attach (PIDGET (inferior_ptid));
2365 post_create_inferior (¤t_target, from_tty);
2367 /* Install inferior's terminal modes. */
2368 target_terminal_inferior ();
2372 /* The user requested an `attach&', so be sure to leave threads
2373 that didn't get a signal running. */
2375 /* Immediatelly resume all suspended threads of this inferior,
2376 and this inferior only. This should have no effect on
2377 already running threads. If a thread has been stopped with a
2378 signal, leave it be. */
2380 proceed_after_attach (inferior->pid);
2383 if (inferior_thread ()->suspend.stop_signal == TARGET_SIGNAL_0)
2385 clear_proceed_status ();
2386 proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0);
2392 /* The user requested a plain `attach', so be sure to leave
2393 the inferior stopped. */
2395 if (target_can_async_p ())
2396 async_enable_stdin ();
2398 /* At least the current thread is already stopped. */
2400 /* In all-stop, by definition, all threads have to be already
2401 stopped at this point. In non-stop, however, although the
2402 selected thread is stopped, others may still be executing.
2403 Be sure to explicitly stop all threads of the process. This
2404 should have no effect on already stopped threads. */
2406 target_stop (pid_to_ptid (inferior->pid));
2408 /* Tell the user/frontend where we're stopped. */
2410 if (deprecated_attach_hook)
2411 deprecated_attach_hook ();
2415 struct attach_command_continuation_args
2423 attach_command_continuation (void *args)
2425 struct attach_command_continuation_args *a = args;
2427 attach_command_post_wait (a->args, a->from_tty, a->async_exec);
2431 attach_command_continuation_free_args (void *args)
2433 struct attach_command_continuation_args *a = args;
2440 attach_command (char *args, int from_tty)
2443 struct cleanup *back_to = make_cleanup (null_cleanup, NULL);
2445 dont_repeat (); /* Not for the faint of heart */
2447 if (gdbarch_has_global_solist (target_gdbarch))
2448 /* Don't complain if all processes share the same symbol
2451 else if (target_has_execution)
2453 if (query (_("A program is being debugged already. Kill it? ")))
2456 error (_("Not killed."));
2459 /* Clean up any leftovers from other runs. Some other things from
2460 this function should probably be moved into target_pre_inferior. */
2461 target_pre_inferior (from_tty);
2463 if (non_stop && !target_supports_non_stop ())
2464 error (_("Cannot attach to this target in non-stop mode"));
2468 async_exec = strip_bg_char (&args);
2470 /* If we get a request for running in the bg but the target
2471 doesn't support it, error out. */
2472 if (async_exec && !target_can_async_p ())
2473 error (_("Asynchronous execution not supported on this target."));
2476 /* If we don't get a request of running in the bg, then we need
2477 to simulate synchronous (fg) execution. */
2478 if (!async_exec && target_can_async_p ())
2480 /* Simulate synchronous execution. */
2481 async_disable_stdin ();
2482 make_cleanup ((make_cleanup_ftype *)async_enable_stdin, NULL);
2485 target_attach (args, from_tty);
2487 /* Set up the "saved terminal modes" of the inferior
2488 based on what modes we are starting it with. */
2489 target_terminal_init ();
2491 /* Set up execution context to know that we should return from
2492 wait_for_inferior as soon as the target reports a stop. */
2493 init_wait_for_inferior ();
2494 clear_proceed_status ();
2498 /* If we find that the current thread isn't stopped, explicitly
2499 do so now, because we're going to install breakpoints and
2503 /* The user requested an `attach&'; stop just one thread. */
2504 target_stop (inferior_ptid);
2506 /* The user requested an `attach', so stop all threads of this
2508 target_stop (pid_to_ptid (ptid_get_pid (inferior_ptid)));
2511 /* Some system don't generate traps when attaching to inferior.
2512 E.g. Mach 3 or GNU hurd. */
2513 if (!target_attach_no_wait)
2515 struct inferior *inferior = current_inferior ();
2517 /* Careful here. See comments in inferior.h. Basically some
2518 OSes don't ignore SIGSTOPs on continue requests anymore. We
2519 need a way for handle_inferior_event to reset the stop_signal
2520 variable after an attach, and this is what
2521 STOP_QUIETLY_NO_SIGSTOP is for. */
2522 inferior->control.stop_soon = STOP_QUIETLY_NO_SIGSTOP;
2524 if (target_can_async_p ())
2526 /* sync_execution mode. Wait for stop. */
2527 struct attach_command_continuation_args *a;
2529 a = xmalloc (sizeof (*a));
2530 a->args = xstrdup (args);
2531 a->from_tty = from_tty;
2532 a->async_exec = async_exec;
2533 add_inferior_continuation (attach_command_continuation, a,
2534 attach_command_continuation_free_args);
2535 discard_cleanups (back_to);
2539 wait_for_inferior ();
2542 attach_command_post_wait (args, from_tty, async_exec);
2543 discard_cleanups (back_to);
2546 /* We had just found out that the target was already attached to an
2547 inferior. PTID points at a thread of this new inferior, that is
2548 the most likely to be stopped right now, but not necessarily so.
2549 The new inferior is assumed to be already added to the inferior
2550 list at this point. If LEAVE_RUNNING, then leave the threads of
2551 this inferior running, except those we've explicitly seen reported
2555 notice_new_inferior (ptid_t ptid, int leave_running, int from_tty)
2557 struct cleanup* old_chain;
2560 old_chain = make_cleanup (null_cleanup, NULL);
2562 /* If in non-stop, leave threads as running as they were. If
2563 they're stopped for some reason other than us telling it to, the
2564 target reports a signal != TARGET_SIGNAL_0. We don't try to
2565 resume threads with such a stop signal. */
2566 async_exec = non_stop;
2568 if (!ptid_equal (inferior_ptid, null_ptid))
2569 make_cleanup_restore_current_thread ();
2571 switch_to_thread (ptid);
2573 /* When we "notice" a new inferior we need to do all the things we
2574 would normally do if we had just attached to it. */
2576 if (is_executing (inferior_ptid))
2578 struct inferior *inferior = current_inferior ();
2580 /* We're going to install breakpoints, and poke at memory,
2581 ensure that the inferior is stopped for a moment while we do
2583 target_stop (inferior_ptid);
2585 inferior->control.stop_soon = STOP_QUIETLY_REMOTE;
2587 /* Wait for stop before proceeding. */
2588 if (target_can_async_p ())
2590 struct attach_command_continuation_args *a;
2592 a = xmalloc (sizeof (*a));
2593 a->args = xstrdup ("");
2594 a->from_tty = from_tty;
2595 a->async_exec = async_exec;
2596 add_inferior_continuation (attach_command_continuation, a,
2597 attach_command_continuation_free_args);
2599 do_cleanups (old_chain);
2603 wait_for_inferior ();
2606 async_exec = leave_running;
2607 attach_command_post_wait ("" /* args */, from_tty, async_exec);
2609 do_cleanups (old_chain);
2614 * takes a program previously attached to and detaches it.
2615 * The program resumes execution and will no longer stop
2616 * on signals, etc. We better not have left any breakpoints
2617 * in the program or it'll die when it hits one. For this
2618 * to work, it may be necessary for the process to have been
2619 * previously attached. It *might* work if the program was
2620 * started via the normal ptrace (PTRACE_TRACEME).
2624 detach_command (char *args, int from_tty)
2626 dont_repeat (); /* Not for the faint of heart. */
2628 if (ptid_equal (inferior_ptid, null_ptid))
2629 error (_("The program is not being run."));
2631 disconnect_tracing (from_tty);
2633 target_detach (args, from_tty);
2635 /* If the solist is global across inferiors, don't clear it when we
2636 detach from a single inferior. */
2637 if (!gdbarch_has_global_solist (target_gdbarch))
2638 no_shared_libraries (NULL, from_tty);
2640 /* If we still have inferiors to debug, then don't mess with their
2642 if (!have_inferiors ())
2643 init_thread_list ();
2645 if (deprecated_detach_hook)
2646 deprecated_detach_hook ();
2649 /* Disconnect from the current target without resuming it (leaving it
2650 waiting for a debugger).
2652 We'd better not have left any breakpoints in the program or the
2653 next debugger will get confused. Currently only supported for some
2654 remote targets, since the normal attach mechanisms don't work on
2655 stopped processes on some native platforms (e.g. GNU/Linux). */
2658 disconnect_command (char *args, int from_tty)
2660 dont_repeat (); /* Not for the faint of heart. */
2661 target_disconnect (args, from_tty);
2662 no_shared_libraries (NULL, from_tty);
2663 init_thread_list ();
2664 if (deprecated_detach_hook)
2665 deprecated_detach_hook ();
2669 interrupt_target_1 (int all_threads)
2674 ptid = minus_one_ptid;
2676 ptid = inferior_ptid;
2679 /* Tag the thread as having been explicitly requested to stop, so
2680 other parts of gdb know not to resume this thread automatically,
2681 if it was stopped due to an internal event. Limit this to
2682 non-stop mode, as when debugging a multi-threaded application in
2683 all-stop mode, we will only get one stop event --- it's undefined
2684 which thread will report the event. */
2686 set_stop_requested (ptid, 1);
2689 /* Stop the execution of the target while running in async mode, in
2690 the backgound. In all-stop, stop the whole process. In non-stop
2691 mode, stop the current thread only by default, or stop all threads
2692 if the `-a' switch is used. */
2694 /* interrupt [-a] */
2696 interrupt_target_command (char *args, int from_tty)
2698 if (target_can_async_p ())
2700 int all_threads = 0;
2702 dont_repeat (); /* Not for the faint of heart. */
2705 && strncmp (args, "-a", sizeof ("-a") - 1) == 0)
2708 if (!non_stop && all_threads)
2709 error (_("-a is meaningless in all-stop mode."));
2711 interrupt_target_1 (all_threads);
2716 print_float_info (struct ui_file *file,
2717 struct frame_info *frame, const char *args)
2719 struct gdbarch *gdbarch = get_frame_arch (frame);
2721 if (gdbarch_print_float_info_p (gdbarch))
2722 gdbarch_print_float_info (gdbarch, file, frame, args);
2726 int printed_something = 0;
2729 regnum < gdbarch_num_regs (gdbarch)
2730 + gdbarch_num_pseudo_regs (gdbarch);
2733 if (gdbarch_register_reggroup_p (gdbarch, regnum, float_reggroup))
2735 printed_something = 1;
2736 gdbarch_print_registers_info (gdbarch, file, frame, regnum, 1);
2739 if (!printed_something)
2740 fprintf_filtered (file, "No floating-point info "
2741 "available for this processor.\n");
2746 float_info (char *args, int from_tty)
2748 if (!target_has_registers)
2749 error (_("The program has no registers now."));
2751 print_float_info (gdb_stdout, get_selected_frame (NULL), args);
2755 unset_command (char *args, int from_tty)
2757 printf_filtered (_("\"unset\" must be followed by the "
2758 "name of an unset subcommand.\n"));
2759 help_list (unsetlist, "unset ", -1, gdb_stdout);
2763 _initialize_infcmd (void)
2765 struct cmd_list_element *c = NULL;
2767 /* Add the filename of the terminal connected to inferior I/O. */
2768 add_setshow_filename_cmd ("inferior-tty", class_run,
2769 &inferior_io_terminal_scratch, _("\
2770 Set terminal for future runs of program being debugged."), _("\
2771 Show terminal for future runs of program being debugged."), _("\
2772 Usage: set inferior-tty /dev/pts/1"),
2773 set_inferior_tty_command,
2774 show_inferior_tty_command,
2775 &setlist, &showlist);
2776 add_com_alias ("tty", "set inferior-tty", class_alias, 0);
2778 add_setshow_optional_filename_cmd ("args", class_run,
2779 &inferior_args_scratch, _("\
2780 Set argument list to give program being debugged when it is started."), _("\
2781 Show argument list to give program being debugged when it is started."), _("\
2782 Follow this command with any number of args, to be passed to the program."),
2785 &setlist, &showlist);
2787 c = add_cmd ("environment", no_class, environment_info, _("\
2788 The environment to give the program, or one variable's value.\n\
2789 With an argument VAR, prints the value of environment variable VAR to\n\
2790 give the program being debugged. With no arguments, prints the entire\n\
2791 environment to be given to the program."), &showlist);
2792 set_cmd_completer (c, noop_completer);
2794 add_prefix_cmd ("unset", no_class, unset_command,
2795 _("Complement to certain \"set\" commands."),
2796 &unsetlist, "unset ", 0, &cmdlist);
2798 c = add_cmd ("environment", class_run, unset_environment_command, _("\
2799 Cancel environment variable VAR for the program.\n\
2800 This does not affect the program until the next \"run\" command."),
2802 set_cmd_completer (c, noop_completer);
2804 c = add_cmd ("environment", class_run, set_environment_command, _("\
2805 Set environment variable value to give the program.\n\
2806 Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\
2807 VALUES of environment variables are uninterpreted strings.\n\
2808 This does not affect the program until the next \"run\" command."),
2810 set_cmd_completer (c, noop_completer);
2812 c = add_com ("path", class_files, path_command, _("\
2813 Add directory DIR(s) to beginning of search path for object files.\n\
2814 $cwd in the path means the current working directory.\n\
2815 This path is equivalent to the $PATH shell variable. It is a list of\n\
2816 directories, separated by colons. These directories are searched to find\n\
2817 fully linked executable files and separately compiled object files as \
2819 set_cmd_completer (c, filename_completer);
2821 c = add_cmd ("paths", no_class, path_info, _("\
2822 Current search path for finding object files.\n\
2823 $cwd in the path means the current working directory.\n\
2824 This path is equivalent to the $PATH shell variable. It is a list of\n\
2825 directories, separated by colons. These directories are searched to find\n\
2826 fully linked executable files and separately compiled object files as \
2829 set_cmd_completer (c, noop_completer);
2831 add_prefix_cmd ("kill", class_run, kill_command,
2832 _("Kill execution of program being debugged."),
2833 &killlist, "kill ", 0, &cmdlist);
2835 add_com ("attach", class_run, attach_command, _("\
2836 Attach to a process or file outside of GDB.\n\
2837 This command attaches to another target, of the same type as your last\n\
2838 \"target\" command (\"info files\" will show your target stack).\n\
2839 The command may take as argument a process id or a device file.\n\
2840 For a process id, you must have permission to send the process a signal,\n\
2841 and it must have the same effective uid as the debugger.\n\
2842 When using \"attach\" with a process id, the debugger finds the\n\
2843 program running in the process, looking first in the current working\n\
2844 directory, or (if not found there) using the source file search path\n\
2845 (see the \"directory\" command). You can also use the \"file\" command\n\
2846 to specify the program, and to load its symbol table."));
2848 add_prefix_cmd ("detach", class_run, detach_command, _("\
2849 Detach a process or file previously attached.\n\
2850 If a process, it is no longer traced, and it continues its execution. If\n\
2851 you were debugging a file, the file is closed and gdb no longer accesses it."),
2852 &detachlist, "detach ", 0, &cmdlist);
2854 add_com ("disconnect", class_run, disconnect_command, _("\
2855 Disconnect from a target.\n\
2856 The target will wait for another debugger to connect. Not available for\n\
2859 add_com ("signal", class_run, signal_command, _("\
2860 Continue program giving it signal specified by the argument.\n\
2861 An argument of \"0\" means continue program without giving it a signal."));
2863 add_com ("stepi", class_run, stepi_command, _("\
2864 Step one instruction exactly.\n\
2865 Argument N means do this N times (or till program stops for another \
2867 add_com_alias ("si", "stepi", class_alias, 0);
2869 add_com ("nexti", class_run, nexti_command, _("\
2870 Step one instruction, but proceed through subroutine calls.\n\
2871 Argument N means do this N times (or till program stops for another \
2873 add_com_alias ("ni", "nexti", class_alias, 0);
2875 add_com ("finish", class_run, finish_command, _("\
2876 Execute until selected stack frame returns.\n\
2877 Upon return, the value returned is printed and put in the value history."));
2878 add_com_alias ("fin", "finish", class_run, 1);
2880 add_com ("next", class_run, next_command, _("\
2881 Step program, proceeding through subroutine calls.\n\
2882 Like the \"step\" command as long as subroutine calls do not happen;\n\
2883 when they do, the call is treated as one instruction.\n\
2884 Argument N means do this N times (or till program stops for another \
2886 add_com_alias ("n", "next", class_run, 1);
2888 add_com_alias ("S", "next", class_run, 1);
2890 add_com ("step", class_run, step_command, _("\
2891 Step program until it reaches a different source line.\n\
2892 Argument N means do this N times (or till program stops for another \
2894 add_com_alias ("s", "step", class_run, 1);
2896 c = add_com ("until", class_run, until_command, _("\
2897 Execute until the program reaches a source line greater than the current\n\
2898 or a specified location (same args as break command) within the current \
2900 set_cmd_completer (c, location_completer);
2901 add_com_alias ("u", "until", class_run, 1);
2903 c = add_com ("advance", class_run, advance_command, _("\
2904 Continue the program up to the given location (same form as args for break \
2906 Execution will also stop upon exit from the current stack frame."));
2907 set_cmd_completer (c, location_completer);
2909 c = add_com ("jump", class_run, jump_command, _("\
2910 Continue program being debugged at specified line or address.\n\
2911 Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\
2912 for an address to start at."));
2913 set_cmd_completer (c, location_completer);
2917 c = add_com ("go", class_run, go_command, _("\
2918 Usage: go <location>\n\
2919 Continue program being debugged, stopping at specified line or \n\
2921 Give as argument either LINENUM or *ADDR, where ADDR is an \n\
2922 expression for an address to start at.\n\
2923 This command is a combination of tbreak and jump."));
2924 set_cmd_completer (c, location_completer);
2928 add_com_alias ("g", "go", class_run, 1);
2930 add_com ("continue", class_run, continue_command, _("\
2931 Continue program being debugged, after signal or breakpoint.\n\
2932 If proceeding from breakpoint, a number N may be used as an argument,\n\
2933 which means to set the ignore count of that breakpoint to N - 1 (so that\n\
2934 the breakpoint won't break until the Nth time it is reached).\n\
2936 If non-stop mode is enabled, continue only the current thread,\n\
2937 otherwise all the threads in the program are continued. To \n\
2938 continue all stopped threads in non-stop mode, use the -a option.\n\
2939 Specifying -a and an ignore count simultaneously is an error."));
2940 add_com_alias ("c", "cont", class_run, 1);
2941 add_com_alias ("fg", "cont", class_run, 1);
2943 c = add_com ("run", class_run, run_command, _("\
2944 Start debugged program. You may specify arguments to give it.\n\
2945 Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\
2946 Input and output redirection with \">\", \"<\", or \">>\" are also \
2948 With no arguments, uses arguments last specified (with \"run\" \
2949 or \"set args\").\n\
2950 To cancel previous arguments and run with no arguments,\n\
2951 use \"set args\" without arguments."));
2952 set_cmd_completer (c, filename_completer);
2953 add_com_alias ("r", "run", class_run, 1);
2955 add_com ("R", class_run, run_no_args_command,
2956 _("Start debugged program with no arguments."));
2958 c = add_com ("start", class_run, start_command, _("\
2959 Run the debugged program until the beginning of the main procedure.\n\
2960 You may specify arguments to give to your program, just as with the\n\
2961 \"run\" command."));
2962 set_cmd_completer (c, filename_completer);
2964 add_com ("interrupt", class_run, interrupt_target_command,
2965 _("Interrupt the execution of the debugged program.\n\
2966 If non-stop mode is enabled, interrupt only the current thread,\n\
2967 otherwise all the threads in the program are stopped. To \n\
2968 interrupt all running threads in non-stop mode, use the -a option."));
2970 add_info ("registers", nofp_registers_info, _("\
2971 List of integer registers and their contents, for selected stack frame.\n\
2972 Register name as argument means describe only that register."));
2973 add_info_alias ("r", "registers", 1);
2976 add_com ("lr", class_info, nofp_registers_info, _("\
2977 List of integer registers and their contents, for selected stack frame.\n\
2978 Register name as argument means describe only that register."));
2979 add_info ("all-registers", all_registers_info, _("\
2980 List of all registers and their contents, for selected stack frame.\n\
2981 Register name as argument means describe only that register."));
2983 add_info ("program", program_info,
2984 _("Execution status of the program."));
2986 add_info ("float", float_info,
2987 _("Print the status of the floating point unit\n"));
2989 add_info ("vector", vector_info,
2990 _("Print the status of the vector unit\n"));