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 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"
58 extern void disconnect_or_stop_tracing (int from_tty);
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, int count, int thread);
112 static void next_command (char *, int);
114 static void step_command (char *, int);
116 static void run_command (char *, int);
118 static void run_no_args_command (char *args, int from_tty);
120 static void go_command (char *line_no, int from_tty);
122 static int strip_bg_char (char **);
124 void _initialize_infcmd (void);
126 #define ERROR_NO_INFERIOR \
127 if (!target_has_execution) error (_("The program is not being run."));
129 /* String containing arguments to give to the program, separated by spaces.
130 Empty string (pointer to '\0') means no args. */
132 static char *inferior_args;
134 /* The inferior arguments as a vector. If INFERIOR_ARGC is nonzero,
135 then we must compute INFERIOR_ARGS from this (via the target). */
137 static int inferior_argc;
138 static char **inferior_argv;
140 /* File name for default use for standard in/out in the inferior. */
142 static char *inferior_io_terminal;
144 /* Pid of our debugged inferior, or 0 if no inferior now.
145 Since various parts of infrun.c test this to see whether there is a program
146 being debugged it should be nonzero (currently 3 is used) for remote
149 ptid_t inferior_ptid;
151 /* Address at which inferior stopped. */
155 /* Flag indicating that a command has proceeded the inferior past the
156 current breakpoint. */
158 int breakpoint_proceeded;
160 /* Nonzero if stopped due to completion of a stack dummy routine. */
162 int stop_stack_dummy;
164 /* Nonzero if stopped due to a random (unexpected) signal in inferior
167 int stopped_by_random_signal;
169 /* Environment to use for running inferior,
170 in format described in environ.h. */
172 struct gdb_environ *inferior_environ;
174 /* Accessor routines. */
177 set_inferior_io_terminal (const char *terminal_name)
179 if (inferior_io_terminal)
180 xfree (inferior_io_terminal);
183 inferior_io_terminal = NULL;
185 inferior_io_terminal = xstrdup (terminal_name);
189 get_inferior_io_terminal (void)
191 return inferior_io_terminal;
195 get_inferior_args (void)
197 if (inferior_argc != 0)
201 n = construct_inferior_arguments (inferior_argc, inferior_argv);
202 old = set_inferior_args (n);
206 if (inferior_args == NULL)
207 inferior_args = xstrdup ("");
209 return inferior_args;
213 set_inferior_args (char *newargs)
215 char *saved_args = inferior_args;
217 inferior_args = newargs;
225 set_inferior_args_vector (int argc, char **argv)
227 inferior_argc = argc;
228 inferior_argv = argv;
231 /* Notice when `set args' is run. */
233 notice_args_set (char *args, int from_tty, struct cmd_list_element *c)
239 /* Notice when `show args' is run. */
241 notice_args_read (struct ui_file *file, int from_tty,
242 struct cmd_list_element *c, const char *value)
244 /* Note that we ignore the passed-in value in favor of computing it
246 deprecated_show_value_hack (file, from_tty, c, get_inferior_args ());
250 /* Compute command-line string given argument vector. This does the
251 same shell processing as fork_inferior. */
253 construct_inferior_arguments (int argc, char **argv)
257 if (STARTUP_WITH_SHELL)
259 /* This holds all the characters considered special to the
260 typical Unix shells. We include `^' because the SunOS
261 /bin/sh treats it as a synonym for `|'. */
262 char *special = "\"!#$&*()\\|[]{}<>?'\"`~^; \t\n";
267 /* We over-compute the size. It shouldn't matter. */
268 for (i = 0; i < argc; ++i)
269 length += 3 * strlen (argv[i]) + 1 + 2 * (argv[i][0] == '\0');
271 result = (char *) xmalloc (length);
274 for (i = 0; i < argc; ++i)
279 /* Need to handle empty arguments specially. */
280 if (argv[i][0] == '\0')
287 for (cp = argv[i]; *cp; ++cp)
291 /* A newline cannot be quoted with a backslash (it
292 just disappears), only by putting it inside
300 if (strchr (special, *cp) != NULL)
311 /* In this case we can't handle arguments that contain spaces,
312 tabs, or newlines -- see breakup_args(). */
316 for (i = 0; i < argc; ++i)
318 char *cp = strchr (argv[i], ' ');
320 cp = strchr (argv[i], '\t');
322 cp = strchr (argv[i], '\n');
324 error (_("can't handle command-line argument containing whitespace"));
325 length += strlen (argv[i]) + 1;
328 result = (char *) xmalloc (length);
330 for (i = 0; i < argc; ++i)
333 strcat (result, " ");
334 strcat (result, argv[i]);
342 /* This function detects whether or not a '&' character (indicating
343 background execution) has been added as *the last* of the arguments ARGS
344 of a command. If it has, it removes it and returns 1. Otherwise it
345 does nothing and returns 0. */
347 strip_bg_char (char **args)
351 p = strchr (*args, '&');
355 if (p == (*args + strlen (*args) - 1))
357 if (strlen (*args) > 1)
361 while (*p == ' ' || *p == '\t');
373 tty_command (char *file, int from_tty)
376 error_no_arg (_("terminal name for running target process"));
378 set_inferior_io_terminal (file);
381 /* Common actions to take after creating any sort of inferior, by any
382 means (running, attaching, connecting, et cetera). The target
383 should be stopped. */
386 post_create_inferior (struct target_ops *target, int from_tty)
388 /* Be sure we own the terminal in case write operations are performed. */
389 target_terminal_ours ();
391 /* If the target hasn't taken care of this already, do it now.
392 Targets which need to access registers during to_open,
393 to_create_inferior, or to_attach should do it earlier; but many
395 target_find_description ();
397 /* Now that we know the register layout, retrieve current PC. */
398 stop_pc = regcache_read_pc (get_current_regcache ());
400 /* If the solist is global across processes, there's no need to
402 if (exec_bfd && !gdbarch_has_global_solist (target_gdbarch))
404 /* Sometimes the platform-specific hook loads initial shared
405 libraries, and sometimes it doesn't. Try to do so first, so
406 that we can add them with the correct value for FROM_TTY.
407 If we made all the inferior hook methods consistent,
408 this call could be removed. */
410 SOLIB_ADD (NULL, from_tty, target, auto_solib_add);
412 solib_add (NULL, from_tty, target, auto_solib_add);
418 /* Create the hooks to handle shared library load and unload
420 #ifdef SOLIB_CREATE_INFERIOR_HOOK
421 SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid));
423 solib_create_inferior_hook ();
427 /* If the user sets watchpoints before execution having started,
428 then she gets software watchpoints, because GDB can't know which
429 target will end up being pushed, or if it supports hardware
430 watchpoints or not. breakpoint_re_set takes care of promoting
431 watchpoints to hardware watchpoints if possible, however, if this
432 new inferior doesn't load shared libraries or we don't pull in
433 symbols from any other source on this target/arch,
434 breakpoint_re_set is never called. Call it now so that software
435 watchpoints get a chance to be promoted to hardware watchpoints
436 if the now pushed target supports hardware watchpoints. */
437 breakpoint_re_set ();
439 observer_notify_inferior_created (target, from_tty);
442 /* Kill the inferior if already running. This function is designed
443 to be called when we are about to start the execution of the program
444 from the beginning. Ask the user to confirm that he wants to restart
445 the program being debugged when FROM_TTY is non-null. */
448 kill_if_already_running (int from_tty)
450 if (! ptid_equal (inferior_ptid, null_ptid) && target_has_execution)
452 /* Bail out before killing the program if we will not be able to
454 target_require_runnable ();
457 && !query (_("The program being debugged has been started already.\n\
458 Start it from the beginning? ")))
459 error (_("Program not restarted."));
464 /* Implement the "run" command. If TBREAK_AT_MAIN is set, then insert
465 a temporary breakpoint at the begining of the main program before
466 running the program. */
469 run_command_1 (char *args, int from_tty, int tbreak_at_main)
472 struct cleanup *old_chain;
477 kill_if_already_running (from_tty);
479 init_wait_for_inferior ();
480 clear_breakpoint_hit_counts ();
482 /* Clean up any leftovers from other runs. Some other things from
483 this function should probably be moved into target_pre_inferior. */
484 target_pre_inferior (from_tty);
486 /* The comment here used to read, "The exec file is re-read every
487 time we do a generic_mourn_inferior, so we just have to worry
488 about the symbol file." The `generic_mourn_inferior' function
489 gets called whenever the program exits. However, suppose the
490 program exits, and *then* the executable file changes? We need
491 to check again here. Since reopen_exec_file doesn't do anything
492 if the timestamp hasn't changed, I don't see the harm. */
496 /* Insert the temporary breakpoint if a location was specified. */
498 tbreak_command (main_name (), 0);
500 exec_file = (char *) get_exec_file (0);
502 if (non_stop && !target_supports_non_stop ())
503 error (_("The target does not support running in non-stop mode."));
505 /* We keep symbols from add-symbol-file, on the grounds that the
506 user might want to add some symbols before running the program
507 (right?). But sometimes (dynamic loading where the user manually
508 introduces the new symbols with add-symbol-file), the code which
509 the symbols describe does not persist between runs. Currently
510 the user has to manually nuke all symbols between runs if they
511 want them to go away (PR 2207). This is probably reasonable. */
515 if (target_can_async_p ())
516 async_disable_stdin ();
520 int async_exec = strip_bg_char (&args);
522 /* If we get a request for running in the bg but the target
523 doesn't support it, error out. */
524 if (async_exec && !target_can_async_p ())
525 error (_("Asynchronous execution not supported on this target."));
527 /* If we don't get a request of running in the bg, then we need
528 to simulate synchronous (fg) execution. */
529 if (!async_exec && target_can_async_p ())
531 /* Simulate synchronous execution */
532 async_disable_stdin ();
535 /* If there were other args, beside '&', process them. */
538 char *old_args = set_inferior_args (xstrdup (args));
545 ui_out_field_string (uiout, NULL, "Starting program");
546 ui_out_text (uiout, ": ");
548 ui_out_field_string (uiout, "execfile", exec_file);
549 ui_out_spaces (uiout, 1);
550 /* We call get_inferior_args() because we might need to compute
552 ui_out_field_string (uiout, "infargs", get_inferior_args ());
553 ui_out_text (uiout, "\n");
554 ui_out_flush (uiout);
557 /* We call get_inferior_args() because we might need to compute
559 target_create_inferior (exec_file, get_inferior_args (),
560 environ_vector (inferior_environ), from_tty);
562 /* We're starting off a new process. When we get out of here, in
563 non-stop mode, finish the state of all threads of that process,
564 but leave other threads alone, as they may be stopped in internal
565 events --- the frontend shouldn't see them as stopped. In
566 all-stop, always finish the state of all threads, as we may be
567 resuming more than just the new process. */
569 ptid = pid_to_ptid (ptid_get_pid (inferior_ptid));
571 ptid = minus_one_ptid;
572 old_chain = make_cleanup (finish_thread_state_cleanup, &ptid);
574 /* Pass zero for FROM_TTY, because at this point the "run" command
575 has done its thing; now we are setting up the running program. */
576 post_create_inferior (¤t_target, 0);
578 /* Start the target running. */
579 proceed ((CORE_ADDR) -1, TARGET_SIGNAL_0, 0);
581 /* Since there was no error, there's no need to finish the thread
583 discard_cleanups (old_chain);
587 run_command (char *args, int from_tty)
589 run_command_1 (args, from_tty, 0);
593 run_no_args_command (char *args, int from_tty)
595 char *old_args = set_inferior_args (xstrdup (""));
600 /* Start the execution of the program up until the beginning of the main
604 start_command (char *args, int from_tty)
606 /* Some languages such as Ada need to search inside the program
607 minimal symbols for the location where to put the temporary
608 breakpoint before starting. */
609 if (!have_minimal_symbols ())
610 error (_("No symbol table loaded. Use the \"file\" command."));
612 /* Run the program until reaching the main procedure... */
613 run_command_1 (args, from_tty, 1);
617 proceed_thread_callback (struct thread_info *thread, void *arg)
619 /* We go through all threads individually instead of compressing
620 into a single target `resume_all' request, because some threads
621 may be stopped in internal breakpoints/events, or stopped waiting
622 for its turn in the displaced stepping queue (that is, they are
623 running && !executing). The target side has no idea about why
624 the thread is stopped, so a `resume_all' command would resume too
625 much. If/when GDB gains a way to tell the target `hold this
626 thread stopped until I say otherwise', then we can optimize
628 if (!is_stopped (thread->ptid))
631 switch_to_thread (thread->ptid);
632 clear_proceed_status ();
633 proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0);
638 ensure_valid_thread (void)
640 if (ptid_equal (inferior_ptid, null_ptid)
641 || is_exited (inferior_ptid))
643 Cannot execute this command without a live selected thread."));
647 continue_1 (int all_threads)
651 if (non_stop && all_threads)
653 /* Don't error out if the current thread is running, because
654 there may be other stopped threads. */
655 struct cleanup *old_chain;
657 /* Backup current thread and selected frame. */
658 old_chain = make_cleanup_restore_current_thread ();
660 iterate_over_threads (proceed_thread_callback, NULL);
662 /* Restore selected ptid. */
663 do_cleanups (old_chain);
667 ensure_valid_thread ();
668 ensure_not_running ();
669 clear_proceed_status ();
670 proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0);
674 /* continue [-a] [proceed-count] [&] */
676 continue_command (char *args, int from_tty)
682 /* Find out whether we must run in the background. */
684 async_exec = strip_bg_char (&args);
686 /* If we must run in the background, but the target can't do it,
688 if (async_exec && !target_can_async_p ())
689 error (_("Asynchronous execution not supported on this target."));
691 /* If we are not asked to run in the bg, then prepare to run in the
692 foreground, synchronously. */
693 if (!async_exec && target_can_async_p ())
695 /* Simulate synchronous execution */
696 async_disable_stdin ();
701 if (strncmp (args, "-a", sizeof ("-a") - 1) == 0)
704 args += sizeof ("-a") - 1;
710 if (!non_stop && all_threads)
711 error (_("`-a' is meaningless in all-stop mode."));
713 if (args != NULL && all_threads)
715 Can't resume all threads and specify proceed count simultaneously."));
717 /* If we have an argument left, set proceed count of breakpoint we
724 struct thread_info *tp;
727 tp = find_thread_ptid (inferior_ptid);
731 struct target_waitstatus ws;
733 get_last_target_status (&last_ptid, &ws);
734 tp = find_thread_ptid (last_ptid);
737 bs = tp->stop_bpstat;
739 while ((stat = bpstat_num (&bs, &num)) != 0)
742 set_ignore_count (num,
743 parse_and_eval_long (args) - 1,
745 /* set_ignore_count prints a message ending with a period.
746 So print two spaces before "Continuing.". */
748 printf_filtered (" ");
752 if (!stopped && from_tty)
755 ("Not stopped at any breakpoint; argument ignored.\n");
760 printf_filtered (_("Continuing.\n"));
762 continue_1 (all_threads);
765 /* Record the starting point of a "step" or "next" command. */
768 set_step_frame (void)
770 struct symtab_and_line sal;
772 find_frame_sal (get_current_frame (), &sal);
773 set_step_info (get_current_frame (), sal);
776 /* Step until outside of current statement. */
779 step_command (char *count_string, int from_tty)
781 step_1 (0, 0, count_string);
784 /* Likewise, but skip over subroutine calls as if single instructions. */
787 next_command (char *count_string, int from_tty)
789 step_1 (1, 0, count_string);
792 /* Likewise, but step only one instruction. */
795 stepi_command (char *count_string, int from_tty)
797 step_1 (0, 1, count_string);
801 nexti_command (char *count_string, int from_tty)
803 step_1 (1, 1, count_string);
807 delete_longjmp_breakpoint_cleanup (void *arg)
809 int thread = * (int *) arg;
810 delete_longjmp_breakpoint (thread);
814 step_1 (int skip_subroutines, int single_inst, char *count_string)
817 struct frame_info *frame;
818 struct cleanup *cleanups = make_cleanup (null_cleanup, NULL);
823 ensure_valid_thread ();
824 ensure_not_running ();
827 async_exec = strip_bg_char (&count_string);
829 /* If we get a request for running in the bg but the target
830 doesn't support it, error out. */
831 if (async_exec && !target_can_async_p ())
832 error (_("Asynchronous execution not supported on this target."));
834 /* If we don't get a request of running in the bg, then we need
835 to simulate synchronous (fg) execution. */
836 if (!async_exec && target_can_async_p ())
838 /* Simulate synchronous execution */
839 async_disable_stdin ();
842 count = count_string ? parse_and_eval_long (count_string) : 1;
844 if (!single_inst || skip_subroutines) /* leave si command alone */
846 if (in_thread_list (inferior_ptid))
847 thread = pid_to_thread_id (inferior_ptid);
849 set_longjmp_breakpoint (thread);
851 make_cleanup (delete_longjmp_breakpoint_cleanup, &thread);
854 /* In synchronous case, all is well; each step_once call will step once. */
855 if (!target_can_async_p ())
857 for (; count > 0; count--)
859 struct thread_info *tp;
860 step_once (skip_subroutines, single_inst, count, thread);
862 if (target_has_execution
863 && !ptid_equal (inferior_ptid, null_ptid))
864 tp = inferior_thread ();
868 if (!tp || !tp->stop_step || !tp->step_multi)
870 /* If we stopped for some reason that is not stepping
871 there are no further steps to make. */
878 do_cleanups (cleanups);
882 /* In the case of an asynchronous target things get complicated;
883 do only one step for now, before returning control to the
884 event loop. Let the continuation figure out how many other
885 steps we need to do, and handle them one at the time, through
887 step_once (skip_subroutines, single_inst, count, thread);
889 /* We are running, and the continuation is installed. It will
890 disable the longjmp breakpoint as appropriate. */
891 discard_cleanups (cleanups);
895 struct step_1_continuation_args
898 int skip_subroutines;
903 /* Called after we are done with one step operation, to check whether
904 we need to step again, before we print the prompt and return control
905 to the user. If count is > 1, we will need to do one more call to
906 proceed(), via step_once(). Basically it is like step_once and
907 step_1_continuation are co-recursive. */
909 step_1_continuation (void *args)
911 struct step_1_continuation_args *a = args;
913 if (target_has_execution)
915 struct thread_info *tp;
917 tp = inferior_thread ();
918 if (tp->step_multi && tp->stop_step)
920 /* There are more steps to make, and we did stop due to
921 ending a stepping range. Do another step. */
922 step_once (a->skip_subroutines, a->single_inst,
923 a->count - 1, a->thread);
929 /* We either stopped for some reason that is not stepping, or there
930 are no further steps to make. Cleanup. */
931 if (!a->single_inst || a->skip_subroutines)
932 delete_longjmp_breakpoint (a->thread);
935 /* Do just one step operation. This is useful to implement the 'step
936 n' kind of commands. In case of asynchronous targets, we will have
937 to set up a continuation to be done after the target stops (after
938 this one step). For synch targets, the caller handles further
942 step_once (int skip_subroutines, int single_inst, int count, int thread)
944 struct frame_info *frame = get_current_frame ();
948 /* Don't assume THREAD is a valid thread id. It is set to -1 if
949 the longjmp breakpoint was not required. Use the
950 INFERIOR_PTID thread instead, which is the same thread when
952 struct thread_info *tp = inferior_thread ();
953 clear_proceed_status ();
960 /* Step at an inlined function behaves like "down". */
961 if (!skip_subroutines && !single_inst
962 && inline_skipped_frames (inferior_ptid))
964 step_into_inline_frame (inferior_ptid);
966 step_once (skip_subroutines, single_inst, count - 1, thread);
968 /* Pretend that we've stopped. */
973 pc = get_frame_pc (frame);
974 find_pc_line_pc_range (pc,
975 &tp->step_range_start, &tp->step_range_end);
977 /* If we have no line info, switch to stepi mode. */
978 if (tp->step_range_end == 0 && step_stop_if_no_debug)
979 tp->step_range_start = tp->step_range_end = 1;
980 else if (tp->step_range_end == 0)
983 if (find_pc_partial_function (pc, &name,
984 &tp->step_range_start,
985 &tp->step_range_end) == 0)
986 error (_("Cannot find bounds of current function"));
988 target_terminal_ours ();
989 printf_filtered (_("\
990 Single stepping until exit from function %s, \n\
991 which has no line number information.\n"), name);
996 /* Say we are stepping, but stop after one insn whatever it does. */
997 tp->step_range_start = tp->step_range_end = 1;
998 if (!skip_subroutines)
1000 Don't step over function calls, not even to functions lacking
1002 tp->step_over_calls = STEP_OVER_NONE;
1005 if (skip_subroutines)
1006 tp->step_over_calls = STEP_OVER_ALL;
1008 tp->step_multi = (count > 1);
1009 proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 1);
1011 /* For async targets, register a continuation to do any
1012 additional steps. For sync targets, the caller will handle
1013 further stepping. */
1014 if (target_can_async_p ())
1016 struct step_1_continuation_args *args;
1018 args = xmalloc (sizeof (*args));
1019 args->skip_subroutines = skip_subroutines;
1020 args->single_inst = single_inst;
1021 args->count = count;
1022 args->thread = thread;
1024 add_intermediate_continuation (tp, step_1_continuation, args, xfree);
1030 /* Continue program at specified address. */
1033 jump_command (char *arg, int from_tty)
1035 struct gdbarch *gdbarch = get_current_arch ();
1037 struct symtabs_and_lines sals;
1038 struct symtab_and_line sal;
1044 ensure_valid_thread ();
1045 ensure_not_running ();
1047 /* Find out whether we must run in the background. */
1049 async_exec = strip_bg_char (&arg);
1051 /* If we must run in the background, but the target can't do it,
1053 if (async_exec && !target_can_async_p ())
1054 error (_("Asynchronous execution not supported on this target."));
1057 error_no_arg (_("starting address"));
1059 sals = decode_line_spec_1 (arg, 1);
1060 if (sals.nelts != 1)
1062 error (_("Unreasonable jump request"));
1068 if (sal.symtab == 0 && sal.pc == 0)
1069 error (_("No source file has been specified."));
1071 resolve_sal_pc (&sal); /* May error out */
1073 /* See if we are trying to jump to another function. */
1074 fn = get_frame_function (get_current_frame ());
1075 sfn = find_pc_function (sal.pc);
1076 if (fn != NULL && sfn != fn)
1078 if (!query (_("Line %d is not in `%s'. Jump anyway? "), sal.line,
1079 SYMBOL_PRINT_NAME (fn)))
1081 error (_("Not confirmed."));
1088 fixup_symbol_section (sfn, 0);
1089 if (section_is_overlay (SYMBOL_OBJ_SECTION (sfn)) &&
1090 !section_is_mapped (SYMBOL_OBJ_SECTION (sfn)))
1092 if (!query (_("WARNING!!! Destination is in unmapped overlay! Jump anyway? ")))
1094 error (_("Not confirmed."));
1104 printf_filtered (_("Continuing at "));
1105 fputs_filtered (paddress (gdbarch, addr), gdb_stdout);
1106 printf_filtered (".\n");
1109 /* If we are not asked to run in the bg, then prepare to run in the
1110 foreground, synchronously. */
1111 if (!async_exec && target_can_async_p ())
1113 /* Simulate synchronous execution */
1114 async_disable_stdin ();
1117 clear_proceed_status ();
1118 proceed (addr, TARGET_SIGNAL_0, 0);
1122 /* Go to line or address in current procedure */
1124 go_command (char *line_no, int from_tty)
1126 if (line_no == (char *) NULL || !*line_no)
1127 printf_filtered (_("Usage: go <location>\n"));
1130 tbreak_command (line_no, from_tty);
1131 jump_command (line_no, from_tty);
1136 /* Continue program giving it specified signal. */
1139 signal_command (char *signum_exp, int from_tty)
1141 enum target_signal oursig;
1144 dont_repeat (); /* Too dangerous. */
1146 ensure_valid_thread ();
1147 ensure_not_running ();
1149 /* Find out whether we must run in the background. */
1150 if (signum_exp != NULL)
1151 async_exec = strip_bg_char (&signum_exp);
1153 /* If we must run in the background, but the target can't do it,
1155 if (async_exec && !target_can_async_p ())
1156 error (_("Asynchronous execution not supported on this target."));
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 ();
1167 error_no_arg (_("signal number"));
1169 /* It would be even slicker to make signal names be valid expressions,
1170 (the type could be "enum $signal" or some such), then the user could
1171 assign them to convenience variables. */
1172 oursig = target_signal_from_name (signum_exp);
1174 if (oursig == TARGET_SIGNAL_UNKNOWN)
1176 /* No, try numeric. */
1177 int num = parse_and_eval_long (signum_exp);
1180 oursig = TARGET_SIGNAL_0;
1182 oursig = target_signal_from_command (num);
1187 if (oursig == TARGET_SIGNAL_0)
1188 printf_filtered (_("Continuing with no signal.\n"));
1190 printf_filtered (_("Continuing with signal %s.\n"),
1191 target_signal_to_name (oursig));
1194 clear_proceed_status ();
1195 proceed ((CORE_ADDR) -1, oursig, 0);
1198 /* Proceed until we reach a different source line with pc greater than
1199 our current one or exit the function. We skip calls in both cases.
1201 Note that eventually this command should probably be changed so
1202 that only source lines are printed out when we hit the breakpoint
1203 we set. This may involve changes to wait_for_inferior and the
1204 proceed status code. */
1207 until_next_command (int from_tty)
1209 struct frame_info *frame;
1211 struct symbol *func;
1212 struct symtab_and_line sal;
1213 struct thread_info *tp = inferior_thread ();
1215 clear_proceed_status ();
1218 frame = get_current_frame ();
1220 /* Step until either exited from this function or greater
1221 than the current line (if in symbolic section) or pc (if
1224 pc = get_frame_pc (frame);
1225 func = find_pc_function (pc);
1229 struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (pc);
1231 if (msymbol == NULL)
1232 error (_("Execution is not within a known function."));
1234 tp->step_range_start = SYMBOL_VALUE_ADDRESS (msymbol);
1235 tp->step_range_end = pc;
1239 sal = find_pc_line (pc, 0);
1241 tp->step_range_start = BLOCK_START (SYMBOL_BLOCK_VALUE (func));
1242 tp->step_range_end = sal.end;
1245 tp->step_over_calls = STEP_OVER_ALL;
1247 tp->step_multi = 0; /* Only one call to proceed */
1249 proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 1);
1253 until_command (char *arg, int from_tty)
1257 if (!target_has_execution)
1258 error (_("The program is not running."));
1260 /* Find out whether we must run in the background. */
1262 async_exec = strip_bg_char (&arg);
1264 /* If we must run in the background, but the target can't do it,
1266 if (async_exec && !target_can_async_p ())
1267 error (_("Asynchronous execution not supported on this target."));
1269 /* If we are not asked to run in the bg, then prepare to run in the
1270 foreground, synchronously. */
1271 if (!async_exec && target_can_async_p ())
1273 /* Simulate synchronous execution */
1274 async_disable_stdin ();
1278 until_break_command (arg, from_tty, 0);
1280 until_next_command (from_tty);
1284 advance_command (char *arg, int from_tty)
1288 if (!target_has_execution)
1289 error (_("The program is not running."));
1292 error_no_arg (_("a location"));
1294 /* Find out whether we must run in the background. */
1296 async_exec = strip_bg_char (&arg);
1298 /* If we must run in the background, but the target can't do it,
1300 if (async_exec && !target_can_async_p ())
1301 error (_("Asynchronous execution not supported on this target."));
1303 /* If we are not asked to run in the bg, then prepare to run in the
1304 foreground, synchronously. */
1305 if (!async_exec && target_can_async_p ())
1307 /* Simulate synchronous execution. */
1308 async_disable_stdin ();
1311 until_break_command (arg, from_tty, 1);
1314 /* Print the result of a function at the end of a 'finish' command. */
1317 print_return_value (struct type *func_type, struct type *value_type)
1319 struct gdbarch *gdbarch = get_regcache_arch (stop_registers);
1320 struct cleanup *old_chain;
1321 struct ui_stream *stb;
1322 struct value *value;
1324 CHECK_TYPEDEF (value_type);
1325 gdb_assert (TYPE_CODE (value_type) != TYPE_CODE_VOID);
1327 /* FIXME: 2003-09-27: When returning from a nested inferior function
1328 call, it's possible (with no help from the architecture vector)
1329 to locate and return/print a "struct return" value. This is just
1330 a more complicated case of what is already being done in in the
1331 inferior function call code. In fact, when inferior function
1332 calls are made async, this will likely be made the norm. */
1334 switch (gdbarch_return_value (gdbarch, func_type, value_type,
1337 case RETURN_VALUE_REGISTER_CONVENTION:
1338 case RETURN_VALUE_ABI_RETURNS_ADDRESS:
1339 case RETURN_VALUE_ABI_PRESERVES_ADDRESS:
1340 value = allocate_value (value_type);
1341 gdbarch_return_value (gdbarch, func_type, value_type, stop_registers,
1342 value_contents_raw (value), NULL);
1344 case RETURN_VALUE_STRUCT_CONVENTION:
1348 internal_error (__FILE__, __LINE__, _("bad switch"));
1353 struct value_print_options opts;
1356 stb = ui_out_stream_new (uiout);
1357 old_chain = make_cleanup_ui_out_stream_delete (stb);
1358 ui_out_text (uiout, "Value returned is ");
1359 ui_out_field_fmt (uiout, "gdb-result-var", "$%d",
1360 record_latest_value (value));
1361 ui_out_text (uiout, " = ");
1362 get_raw_print_options (&opts);
1363 value_print (value, stb->stream, &opts);
1364 ui_out_field_stream (uiout, "return-value", stb);
1365 ui_out_text (uiout, "\n");
1366 do_cleanups (old_chain);
1370 ui_out_text (uiout, "Value returned has type: ");
1371 ui_out_field_string (uiout, "return-type", TYPE_NAME (value_type));
1372 ui_out_text (uiout, ".");
1373 ui_out_text (uiout, " Cannot determine contents\n");
1377 /* Stuff that needs to be done by the finish command after the target
1378 has stopped. In asynchronous mode, we wait for the target to stop
1379 in the call to poll or select in the event loop, so it is
1380 impossible to do all the stuff as part of the finish_command
1381 function itself. The only chance we have to complete this command
1382 is in fetch_inferior_event, which is called by the event loop as
1383 soon as it detects that the target has stopped. This function is
1384 called via the cmd_continuation pointer. */
1386 struct finish_command_continuation_args
1388 struct breakpoint *breakpoint;
1389 struct symbol *function;
1393 finish_command_continuation (void *arg)
1395 struct finish_command_continuation_args *a = arg;
1396 struct thread_info *tp = NULL;
1399 if (!ptid_equal (inferior_ptid, null_ptid)
1400 && target_has_execution
1401 && is_stopped (inferior_ptid))
1403 tp = inferior_thread ();
1404 bs = tp->stop_bpstat;
1407 if (bpstat_find_breakpoint (bs, a->breakpoint) != NULL
1408 && a->function != NULL)
1410 struct type *value_type;
1412 value_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (a->function));
1414 internal_error (__FILE__, __LINE__,
1415 _("finish_command: function has no target type"));
1417 if (TYPE_CODE (value_type) != TYPE_CODE_VOID)
1418 print_return_value (SYMBOL_TYPE (a->function), value_type);
1421 /* We suppress normal call of normal_stop observer and do it here so
1422 that the *stopped notification includes the return value. */
1423 if (bs != NULL && tp->proceed_to_finish)
1424 observer_notify_normal_stop (bs, 1 /* print frame */);
1425 delete_breakpoint (a->breakpoint);
1429 finish_command_continuation_free_arg (void *arg)
1434 /* finish_backward -- helper function for finish_command. */
1437 finish_backward (struct symbol *function)
1439 struct symtab_and_line sal;
1440 struct thread_info *tp = inferior_thread ();
1441 struct breakpoint *breakpoint;
1442 struct cleanup *old_chain;
1444 CORE_ADDR func_addr;
1447 pc = get_frame_pc (get_current_frame ());
1449 if (find_pc_partial_function (pc, NULL, &func_addr, NULL) == 0)
1450 internal_error (__FILE__, __LINE__,
1451 _("Finish: couldn't find function."));
1453 sal = find_pc_line (func_addr, 0);
1455 /* We don't need a return value. */
1456 tp->proceed_to_finish = 0;
1457 /* Special case: if we're sitting at the function entry point,
1458 then all we need to do is take a reverse singlestep. We
1459 don't need to set a breakpoint, and indeed it would do us
1462 Note that this can only happen at frame #0, since there's
1463 no way that a function up the stack can have a return address
1464 that's equal to its entry point. */
1468 struct frame_info *frame = get_selected_frame (NULL);
1469 struct gdbarch *gdbarch = get_frame_arch (frame);
1471 /* Set breakpoint and continue. */
1473 set_momentary_breakpoint (gdbarch, sal,
1474 get_stack_frame_id (frame),
1476 /* Tell the breakpoint to keep quiet. We won't be done
1477 until we've done another reverse single-step. */
1478 make_breakpoint_silent (breakpoint);
1479 old_chain = make_cleanup_delete_breakpoint (breakpoint);
1480 proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0);
1481 /* We will be stopped when proceed returns. */
1482 back_up = bpstat_find_breakpoint (tp->stop_bpstat, breakpoint) != NULL;
1483 do_cleanups (old_chain);
1489 /* If in fact we hit the step-resume breakpoint (and not
1490 some other breakpoint), then we're almost there --
1491 we just need to back up by one more single-step. */
1492 tp->step_range_start = tp->step_range_end = 1;
1493 proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 1);
1498 /* finish_forward -- helper function for finish_command. */
1501 finish_forward (struct symbol *function, struct frame_info *frame)
1503 struct gdbarch *gdbarch = get_frame_arch (frame);
1504 struct symtab_and_line sal;
1505 struct thread_info *tp = inferior_thread ();
1506 struct breakpoint *breakpoint;
1507 struct cleanup *old_chain;
1508 struct finish_command_continuation_args *cargs;
1510 sal = find_pc_line (get_frame_pc (frame), 0);
1511 sal.pc = get_frame_pc (frame);
1513 breakpoint = set_momentary_breakpoint (gdbarch, sal,
1514 get_stack_frame_id (frame),
1517 old_chain = make_cleanup_delete_breakpoint (breakpoint);
1519 tp->proceed_to_finish = 1; /* We want stop_registers, please... */
1520 cargs = xmalloc (sizeof (*cargs));
1522 cargs->breakpoint = breakpoint;
1523 cargs->function = function;
1524 add_continuation (tp, finish_command_continuation, cargs,
1525 finish_command_continuation_free_arg);
1526 proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0);
1528 discard_cleanups (old_chain);
1529 if (!target_can_async_p ())
1530 do_all_continuations ();
1533 /* "finish": Set a temporary breakpoint at the place the selected
1534 frame will return to, then continue. */
1537 finish_command (char *arg, int from_tty)
1539 struct frame_info *frame;
1540 struct symbol *function;
1544 /* Find out whether we must run in the background. */
1546 async_exec = strip_bg_char (&arg);
1548 /* If we must run in the background, but the target can't do it,
1550 if (async_exec && !target_can_async_p ())
1551 error (_("Asynchronous execution not supported on this target."));
1553 /* Don't try to async in reverse. */
1554 if (async_exec && execution_direction == EXEC_REVERSE)
1555 error (_("Asynchronous 'finish' not supported in reverse."));
1557 /* If we are not asked to run in the bg, then prepare to run in the
1558 foreground, synchronously. */
1559 if (!async_exec && target_can_async_p ())
1561 /* Simulate synchronous execution. */
1562 async_disable_stdin ();
1566 error (_("The \"finish\" command does not take any arguments."));
1567 if (!target_has_execution)
1568 error (_("The program is not running."));
1570 frame = get_prev_frame (get_selected_frame (_("No selected frame.")));
1572 error (_("\"finish\" not meaningful in the outermost frame."));
1574 clear_proceed_status ();
1576 /* Finishing from an inline frame is completely different. We don't
1577 try to show the "return value" - no way to locate it. So we do
1578 not need a completion. */
1579 if (get_frame_type (get_selected_frame (_("No selected frame.")))
1582 /* Claim we are stepping in the calling frame. An empty step
1583 range means that we will stop once we aren't in a function
1584 called by that frame. We don't use the magic "1" value for
1585 step_range_end, because then infrun will think this is nexti,
1586 and not step over the rest of this inlined function call. */
1587 struct thread_info *tp = inferior_thread ();
1588 struct symtab_and_line empty_sal;
1589 init_sal (&empty_sal);
1590 set_step_info (frame, empty_sal);
1591 tp->step_range_start = tp->step_range_end = get_frame_pc (frame);
1592 tp->step_over_calls = STEP_OVER_ALL;
1594 /* Print info on the selected frame, including level number but not
1598 printf_filtered (_("Run till exit from "));
1599 print_stack_frame (get_selected_frame (NULL), 1, LOCATION);
1602 proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 1);
1606 /* Find the function we will return from. */
1608 function = find_pc_function (get_frame_pc (get_selected_frame (NULL)));
1610 /* Print info on the selected frame, including level number but not
1614 if (execution_direction == EXEC_REVERSE)
1615 printf_filtered (_("Run back to call of "));
1617 printf_filtered (_("Run till exit from "));
1619 print_stack_frame (get_selected_frame (NULL), 1, LOCATION);
1622 if (execution_direction == EXEC_REVERSE)
1623 finish_backward (function);
1625 finish_forward (function, frame);
1630 program_info (char *args, int from_tty)
1634 struct thread_info *tp;
1637 if (!target_has_execution)
1639 printf_filtered (_("The program being debugged is not being run.\n"));
1644 ptid = inferior_ptid;
1647 struct target_waitstatus ws;
1648 get_last_target_status (&ptid, &ws);
1651 if (ptid_equal (ptid, null_ptid) || is_exited (ptid))
1652 error (_("Invalid selected thread."));
1653 else if (is_running (ptid))
1654 error (_("Selected thread is running."));
1656 tp = find_thread_ptid (ptid);
1657 bs = tp->stop_bpstat;
1658 stat = bpstat_num (&bs, &num);
1660 target_files_info ();
1661 printf_filtered (_("Program stopped at %s.\n"),
1662 paddress (target_gdbarch, stop_pc));
1664 printf_filtered (_("It stopped after being stepped.\n"));
1667 /* There may be several breakpoints in the same place, so this
1668 isn't as strange as it seems. */
1673 printf_filtered (_("\
1674 It stopped at a breakpoint that has since been deleted.\n"));
1677 printf_filtered (_("It stopped at breakpoint %d.\n"), num);
1678 stat = bpstat_num (&bs, &num);
1681 else if (tp->stop_signal != TARGET_SIGNAL_0)
1683 printf_filtered (_("It stopped with signal %s, %s.\n"),
1684 target_signal_to_name (tp->stop_signal),
1685 target_signal_to_string (tp->stop_signal));
1690 printf_filtered (_("\
1691 Type \"info stack\" or \"info registers\" for more information.\n"));
1696 environment_info (char *var, int from_tty)
1700 char *val = get_in_environ (inferior_environ, var);
1703 puts_filtered (var);
1704 puts_filtered (" = ");
1705 puts_filtered (val);
1706 puts_filtered ("\n");
1710 puts_filtered ("Environment variable \"");
1711 puts_filtered (var);
1712 puts_filtered ("\" not defined.\n");
1717 char **vector = environ_vector (inferior_environ);
1720 puts_filtered (*vector++);
1721 puts_filtered ("\n");
1727 set_environment_command (char *arg, int from_tty)
1729 char *p, *val, *var;
1733 error_no_arg (_("environment variable and value"));
1735 /* Find seperation between variable name and value */
1736 p = (char *) strchr (arg, '=');
1737 val = (char *) strchr (arg, ' ');
1739 if (p != 0 && val != 0)
1741 /* We have both a space and an equals. If the space is before the
1742 equals, walk forward over the spaces til we see a nonspace
1743 (possibly the equals). */
1748 /* Now if the = is after the char following the spaces,
1749 take the char following the spaces. */
1753 else if (val != 0 && p == 0)
1757 error_no_arg (_("environment variable to set"));
1759 if (p == 0 || p[1] == 0)
1763 p = arg + strlen (arg); /* So that savestring below will work */
1767 /* Not setting variable value to null */
1769 while (*val == ' ' || *val == '\t')
1773 while (p != arg && (p[-1] == ' ' || p[-1] == '\t'))
1776 var = savestring (arg, p - arg);
1779 printf_filtered (_("\
1780 Setting environment variable \"%s\" to null value.\n"),
1782 set_in_environ (inferior_environ, var, "");
1785 set_in_environ (inferior_environ, var, val);
1790 unset_environment_command (char *var, int from_tty)
1794 /* If there is no argument, delete all environment variables.
1795 Ask for confirmation if reading from the terminal. */
1796 if (!from_tty || query (_("Delete all environment variables? ")))
1798 free_environ (inferior_environ);
1799 inferior_environ = make_environ ();
1803 unset_in_environ (inferior_environ, var);
1806 /* Handle the execution path (PATH variable) */
1808 static const char path_var_name[] = "PATH";
1811 path_info (char *args, int from_tty)
1813 puts_filtered ("Executable and object file path: ");
1814 puts_filtered (get_in_environ (inferior_environ, path_var_name));
1815 puts_filtered ("\n");
1818 /* Add zero or more directories to the front of the execution path. */
1821 path_command (char *dirname, int from_tty)
1826 env = get_in_environ (inferior_environ, path_var_name);
1827 /* Can be null if path is not set */
1830 exec_path = xstrdup (env);
1831 mod_path (dirname, &exec_path);
1832 set_in_environ (inferior_environ, path_var_name, exec_path);
1835 path_info ((char *) NULL, from_tty);
1839 /* Print out the machine register regnum. If regnum is -1, print all
1840 registers (print_all == 1) or all non-float and non-vector
1841 registers (print_all == 0).
1843 For most machines, having all_registers_info() print the
1844 register(s) one per line is good enough. If a different format is
1845 required, (eg, for MIPS or Pyramid 90x, which both have lots of
1846 regs), or there is an existing convention for showing all the
1847 registers, define the architecture method PRINT_REGISTERS_INFO to
1848 provide that format. */
1851 default_print_registers_info (struct gdbarch *gdbarch,
1852 struct ui_file *file,
1853 struct frame_info *frame,
1854 int regnum, int print_all)
1857 const int numregs = gdbarch_num_regs (gdbarch)
1858 + gdbarch_num_pseudo_regs (gdbarch);
1859 gdb_byte buffer[MAX_REGISTER_SIZE];
1861 for (i = 0; i < numregs; i++)
1863 /* Decide between printing all regs, non-float / vector regs, or
1869 if (!gdbarch_register_reggroup_p (gdbarch, i, all_reggroup))
1874 if (!gdbarch_register_reggroup_p (gdbarch, i, general_reggroup))
1884 /* If the register name is empty, it is undefined for this
1885 processor, so don't display anything. */
1886 if (gdbarch_register_name (gdbarch, i) == NULL
1887 || *(gdbarch_register_name (gdbarch, i)) == '\0')
1890 fputs_filtered (gdbarch_register_name (gdbarch, i), file);
1891 print_spaces_filtered (15 - strlen (gdbarch_register_name
1892 (gdbarch, i)), file);
1894 /* Get the data in raw format. */
1895 if (! frame_register_read (frame, i, buffer))
1897 fprintf_filtered (file, "*value not available*\n");
1901 /* If virtual format is floating, print it that way, and in raw
1903 if (TYPE_CODE (register_type (gdbarch, i)) == TYPE_CODE_FLT
1904 || TYPE_CODE (register_type (gdbarch, i)) == TYPE_CODE_DECFLOAT)
1907 struct value_print_options opts;
1909 get_user_print_options (&opts);
1911 val_print (register_type (gdbarch, i), buffer, 0, 0,
1912 file, 0, &opts, current_language);
1914 fprintf_filtered (file, "\t(raw 0x");
1915 for (j = 0; j < register_size (gdbarch, i); j++)
1918 if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG)
1921 idx = register_size (gdbarch, i) - 1 - j;
1922 fprintf_filtered (file, "%02x", (unsigned char) buffer[idx]);
1924 fprintf_filtered (file, ")");
1928 struct value_print_options opts;
1930 /* Print the register in hex. */
1931 get_formatted_print_options (&opts, 'x');
1933 val_print (register_type (gdbarch, i), buffer, 0, 0,
1936 /* If not a vector register, print it also according to its
1938 if (TYPE_VECTOR (register_type (gdbarch, i)) == 0)
1940 get_user_print_options (&opts);
1942 fprintf_filtered (file, "\t");
1943 val_print (register_type (gdbarch, i), buffer, 0, 0,
1944 file, 0, &opts, current_language);
1948 fprintf_filtered (file, "\n");
1953 registers_info (char *addr_exp, int fpregs)
1955 struct frame_info *frame;
1956 struct gdbarch *gdbarch;
1957 int regnum, numregs;
1960 if (!target_has_registers)
1961 error (_("The program has no registers now."));
1962 frame = get_selected_frame (NULL);
1963 gdbarch = get_frame_arch (frame);
1967 gdbarch_print_registers_info (gdbarch, gdb_stdout,
1972 while (*addr_exp != '\0')
1977 /* Keep skipping leading white space. */
1978 if (isspace ((*addr_exp)))
1984 /* Discard any leading ``$''. Check that there is something
1985 resembling a register following it. */
1986 if (addr_exp[0] == '$')
1988 if (isspace ((*addr_exp)) || (*addr_exp) == '\0')
1989 error (_("Missing register name"));
1991 /* Find the start/end of this register name/num/group. */
1993 while ((*addr_exp) != '\0' && !isspace ((*addr_exp)))
1997 /* Figure out what we've found and display it. */
1999 /* A register name? */
2001 int regnum = user_reg_map_name_to_regnum (gdbarch, start, end - start);
2004 /* User registers lie completely outside of the range of
2005 normal registers. Catch them early so that the target
2007 if (regnum >= gdbarch_num_regs (gdbarch)
2008 + gdbarch_num_pseudo_regs (gdbarch))
2010 struct value_print_options opts;
2011 struct value *val = value_of_user_reg (regnum, frame);
2013 printf_filtered ("%s: ", start);
2014 get_formatted_print_options (&opts, 'x');
2015 print_scalar_formatted (value_contents (val),
2016 check_typedef (value_type (val)),
2017 &opts, 0, gdb_stdout);
2018 printf_filtered ("\n");
2021 gdbarch_print_registers_info (gdbarch, gdb_stdout,
2022 frame, regnum, fpregs);
2027 /* A register group? */
2029 struct reggroup *group;
2030 for (group = reggroup_next (gdbarch, NULL);
2032 group = reggroup_next (gdbarch, group))
2034 /* Don't bother with a length check. Should the user
2035 enter a short register group name, go with the first
2036 group that matches. */
2037 if (strncmp (start, reggroup_name (group), end - start) == 0)
2044 regnum < gdbarch_num_regs (gdbarch)
2045 + gdbarch_num_pseudo_regs (gdbarch);
2048 if (gdbarch_register_reggroup_p (gdbarch, regnum, group))
2049 gdbarch_print_registers_info (gdbarch,
2057 /* Nothing matched. */
2058 error (_("Invalid register `%.*s'"), (int) (end - start), start);
2063 all_registers_info (char *addr_exp, int from_tty)
2065 registers_info (addr_exp, 1);
2069 nofp_registers_info (char *addr_exp, int from_tty)
2071 registers_info (addr_exp, 0);
2075 print_vector_info (struct ui_file *file,
2076 struct frame_info *frame, const char *args)
2078 struct gdbarch *gdbarch = get_frame_arch (frame);
2080 if (gdbarch_print_vector_info_p (gdbarch))
2081 gdbarch_print_vector_info (gdbarch, file, frame, args);
2085 int printed_something = 0;
2088 regnum < gdbarch_num_regs (gdbarch)
2089 + gdbarch_num_pseudo_regs (gdbarch);
2092 if (gdbarch_register_reggroup_p (gdbarch, regnum, vector_reggroup))
2094 printed_something = 1;
2095 gdbarch_print_registers_info (gdbarch, file, frame, regnum, 1);
2098 if (!printed_something)
2099 fprintf_filtered (file, "No vector information\n");
2104 vector_info (char *args, int from_tty)
2106 if (!target_has_registers)
2107 error (_("The program has no registers now."));
2109 print_vector_info (gdb_stdout, get_selected_frame (NULL), args);
2112 /* Kill the inferior process. Make us have no inferior. */
2115 kill_command (char *arg, int from_tty)
2117 /* FIXME: This should not really be inferior_ptid (or target_has_execution).
2118 It should be a distinct flag that indicates that a target is active, cuz
2119 some targets don't have processes! */
2121 if (ptid_equal (inferior_ptid, null_ptid))
2122 error (_("The program is not being run."));
2123 if (!query (_("Kill the program being debugged? ")))
2124 error (_("Not confirmed."));
2127 /* If we still have other inferiors to debug, then don't mess with
2128 with their threads. */
2129 if (!have_inferiors ())
2131 init_thread_list (); /* Destroy thread info */
2133 /* Killing off the inferior can leave us with a core file. If
2134 so, print the state we are left in. */
2135 if (target_has_stack)
2137 printf_filtered (_("In %s,\n"), target_longname);
2138 print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC);
2141 bfd_cache_close_all ();
2144 /* Used in `attach&' command. ARG is a point to an integer
2145 representing a process id. Proceed threads of this process iff
2146 they stopped due to debugger request, and when they did, they
2147 reported a clean stop (TARGET_SIGNAL_0). Do not proceed threads
2148 that have been explicitly been told to stop. */
2151 proceed_after_attach_callback (struct thread_info *thread,
2154 int pid = * (int *) arg;
2156 if (ptid_get_pid (thread->ptid) == pid
2157 && !is_exited (thread->ptid)
2158 && !is_executing (thread->ptid)
2159 && !thread->stop_requested
2160 && thread->stop_signal == TARGET_SIGNAL_0)
2162 switch_to_thread (thread->ptid);
2163 clear_proceed_status ();
2164 proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0);
2171 proceed_after_attach (int pid)
2173 /* Don't error out if the current thread is running, because
2174 there may be other stopped threads. */
2175 struct cleanup *old_chain;
2177 /* Backup current thread and selected frame. */
2178 old_chain = make_cleanup_restore_current_thread ();
2180 iterate_over_threads (proceed_after_attach_callback, &pid);
2182 /* Restore selected ptid. */
2183 do_cleanups (old_chain);
2188 * Should save/restore the tty state since it might be that the
2189 * program to be debugged was started on this tty and it wants
2190 * the tty in some state other than what we want. If it's running
2191 * on another terminal or without a terminal, then saving and
2192 * restoring the tty state is a harmless no-op.
2193 * This only needs to be done if we are attaching to a process.
2198 takes a program started up outside of gdb and ``attaches'' to it.
2199 This stops it cold in its tracks and allows us to start debugging it.
2200 and wait for the trace-trap that results from attaching. */
2203 attach_command_post_wait (char *args, int from_tty, int async_exec)
2206 char *full_exec_path = NULL;
2207 struct inferior *inferior;
2209 inferior = current_inferior ();
2210 inferior->stop_soon = NO_STOP_QUIETLY;
2212 /* If no exec file is yet known, try to determine it from the
2214 exec_file = (char *) get_exec_file (0);
2217 exec_file = target_pid_to_exec_file (PIDGET (inferior_ptid));
2220 /* It's possible we don't have a full path, but rather just a
2221 filename. Some targets, such as HP-UX, don't provide the
2224 Attempt to qualify the filename against the source path.
2225 (If that fails, we'll just fall back on the original
2226 filename. Not much more we can do...)
2228 if (!source_full_path_of (exec_file, &full_exec_path))
2229 full_exec_path = xstrdup (exec_file);
2231 exec_file_attach (full_exec_path, from_tty);
2232 symbol_file_add_main (full_exec_path, from_tty);
2237 reopen_exec_file ();
2241 /* Take any necessary post-attaching actions for this platform. */
2242 target_post_attach (PIDGET (inferior_ptid));
2244 post_create_inferior (¤t_target, from_tty);
2246 /* Install inferior's terminal modes. */
2247 target_terminal_inferior ();
2251 /* The user requested an `attach&', so be sure to leave threads
2252 that didn't get a signal running. */
2254 /* Immediatelly resume all suspended threads of this inferior,
2255 and this inferior only. This should have no effect on
2256 already running threads. If a thread has been stopped with a
2257 signal, leave it be. */
2259 proceed_after_attach (inferior->pid);
2262 if (inferior_thread ()->stop_signal == TARGET_SIGNAL_0)
2264 clear_proceed_status ();
2265 proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0);
2271 /* The user requested a plain `attach', so be sure to leave
2272 the inferior stopped. */
2274 if (target_can_async_p ())
2275 async_enable_stdin ();
2277 /* At least the current thread is already stopped. */
2279 /* In all-stop, by definition, all threads have to be already
2280 stopped at this point. In non-stop, however, although the
2281 selected thread is stopped, others may still be executing.
2282 Be sure to explicitly stop all threads of the process. This
2283 should have no effect on already stopped threads. */
2285 target_stop (pid_to_ptid (inferior->pid));
2287 /* Tell the user/frontend where we're stopped. */
2289 if (deprecated_attach_hook)
2290 deprecated_attach_hook ();
2294 struct attach_command_continuation_args
2302 attach_command_continuation (void *args)
2304 struct attach_command_continuation_args *a = args;
2305 attach_command_post_wait (a->args, a->from_tty, a->async_exec);
2309 attach_command_continuation_free_args (void *args)
2311 struct attach_command_continuation_args *a = args;
2317 attach_command (char *args, int from_tty)
2320 char *full_exec_path = NULL;
2322 struct cleanup *back_to = make_cleanup (null_cleanup, NULL);
2324 dont_repeat (); /* Not for the faint of heart */
2326 if (gdbarch_has_global_solist (target_gdbarch))
2327 /* Don't complain if all processes share the same symbol
2330 else if (target_has_execution)
2332 if (query (_("A program is being debugged already. Kill it? ")))
2335 error (_("Not killed."));
2338 /* Clean up any leftovers from other runs. Some other things from
2339 this function should probably be moved into target_pre_inferior. */
2340 target_pre_inferior (from_tty);
2342 if (non_stop && !target_supports_non_stop ())
2343 error (_("Cannot attach to this target in non-stop mode"));
2347 async_exec = strip_bg_char (&args);
2349 /* If we get a request for running in the bg but the target
2350 doesn't support it, error out. */
2351 if (async_exec && !target_can_async_p ())
2352 error (_("Asynchronous execution not supported on this target."));
2355 /* If we don't get a request of running in the bg, then we need
2356 to simulate synchronous (fg) execution. */
2357 if (!async_exec && target_can_async_p ())
2359 /* Simulate synchronous execution */
2360 async_disable_stdin ();
2361 make_cleanup ((make_cleanup_ftype *)async_enable_stdin, NULL);
2364 target_attach (args, from_tty);
2366 /* Set up the "saved terminal modes" of the inferior
2367 based on what modes we are starting it with. */
2368 target_terminal_init ();
2370 /* Set up execution context to know that we should return from
2371 wait_for_inferior as soon as the target reports a stop. */
2372 init_wait_for_inferior ();
2373 clear_proceed_status ();
2377 /* If we find that the current thread isn't stopped, explicitly
2378 do so now, because we're going to install breakpoints and
2382 /* The user requested an `attach&'; stop just one thread. */
2383 target_stop (inferior_ptid);
2385 /* The user requested an `attach', so stop all threads of this
2387 target_stop (pid_to_ptid (ptid_get_pid (inferior_ptid)));
2390 /* Some system don't generate traps when attaching to inferior.
2391 E.g. Mach 3 or GNU hurd. */
2392 if (!target_attach_no_wait)
2394 struct inferior *inferior = current_inferior ();
2396 /* Careful here. See comments in inferior.h. Basically some
2397 OSes don't ignore SIGSTOPs on continue requests anymore. We
2398 need a way for handle_inferior_event to reset the stop_signal
2399 variable after an attach, and this is what
2400 STOP_QUIETLY_NO_SIGSTOP is for. */
2401 inferior->stop_soon = STOP_QUIETLY_NO_SIGSTOP;
2403 if (target_can_async_p ())
2405 /* sync_execution mode. Wait for stop. */
2406 struct attach_command_continuation_args *a;
2408 a = xmalloc (sizeof (*a));
2409 a->args = xstrdup (args);
2410 a->from_tty = from_tty;
2411 a->async_exec = async_exec;
2412 add_inferior_continuation (attach_command_continuation, a,
2413 attach_command_continuation_free_args);
2414 discard_cleanups (back_to);
2418 wait_for_inferior (0);
2421 attach_command_post_wait (args, from_tty, async_exec);
2422 discard_cleanups (back_to);
2425 /* We had just found out that the target was already attached to an
2426 inferior. PTID points at a thread of this new inferior, that is
2427 the most likely to be stopped right now, but not necessarily so.
2428 The new inferior is assumed to be already added to the inferior
2429 list at this point. If LEAVE_RUNNING, then leave the threads of
2430 this inferior running, except those we've explicitly seen reported
2434 notice_new_inferior (ptid_t ptid, int leave_running, int from_tty)
2436 struct cleanup* old_chain;
2439 old_chain = make_cleanup (null_cleanup, NULL);
2441 /* If in non-stop, leave threads as running as they were. If
2442 they're stopped for some reason other than us telling it to, the
2443 target reports a signal != TARGET_SIGNAL_0. We don't try to
2444 resume threads with such a stop signal. */
2445 async_exec = non_stop;
2447 if (!ptid_equal (inferior_ptid, null_ptid))
2448 make_cleanup_restore_current_thread ();
2450 switch_to_thread (ptid);
2452 /* When we "notice" a new inferior we need to do all the things we
2453 would normally do if we had just attached to it. */
2455 if (is_executing (inferior_ptid))
2457 struct inferior *inferior = current_inferior ();
2459 /* We're going to install breakpoints, and poke at memory,
2460 ensure that the inferior is stopped for a moment while we do
2462 target_stop (inferior_ptid);
2464 inferior->stop_soon = STOP_QUIETLY_REMOTE;
2466 /* Wait for stop before proceeding. */
2467 if (target_can_async_p ())
2469 struct attach_command_continuation_args *a;
2471 a = xmalloc (sizeof (*a));
2472 a->args = xstrdup ("");
2473 a->from_tty = from_tty;
2474 a->async_exec = async_exec;
2475 add_inferior_continuation (attach_command_continuation, a,
2476 attach_command_continuation_free_args);
2478 do_cleanups (old_chain);
2482 wait_for_inferior (0);
2485 async_exec = leave_running;
2486 attach_command_post_wait ("" /* args */, from_tty, async_exec);
2488 do_cleanups (old_chain);
2493 * takes a program previously attached to and detaches it.
2494 * The program resumes execution and will no longer stop
2495 * on signals, etc. We better not have left any breakpoints
2496 * in the program or it'll die when it hits one. For this
2497 * to work, it may be necessary for the process to have been
2498 * previously attached. It *might* work if the program was
2499 * started via the normal ptrace (PTRACE_TRACEME).
2503 detach_command (char *args, int from_tty)
2505 dont_repeat (); /* Not for the faint of heart. */
2507 if (ptid_equal (inferior_ptid, null_ptid))
2508 error (_("The program is not being run."));
2510 disconnect_or_stop_tracing (from_tty);
2512 target_detach (args, from_tty);
2514 /* If the solist is global across inferiors, don't clear it when we
2515 detach from a single inferior. */
2516 if (!gdbarch_has_global_solist (target_gdbarch))
2517 no_shared_libraries (NULL, from_tty);
2519 /* If we still have inferiors to debug, then don't mess with their
2521 if (!have_inferiors ())
2522 init_thread_list ();
2524 if (deprecated_detach_hook)
2525 deprecated_detach_hook ();
2528 /* Disconnect from the current target without resuming it (leaving it
2529 waiting for a debugger).
2531 We'd better not have left any breakpoints in the program or the
2532 next debugger will get confused. Currently only supported for some
2533 remote targets, since the normal attach mechanisms don't work on
2534 stopped processes on some native platforms (e.g. GNU/Linux). */
2537 disconnect_command (char *args, int from_tty)
2539 dont_repeat (); /* Not for the faint of heart */
2540 target_disconnect (args, from_tty);
2541 no_shared_libraries (NULL, from_tty);
2542 init_thread_list ();
2543 if (deprecated_detach_hook)
2544 deprecated_detach_hook ();
2548 interrupt_target_1 (int all_threads)
2552 ptid = minus_one_ptid;
2554 ptid = inferior_ptid;
2557 /* Tag the thread as having been explicitly requested to stop, so
2558 other parts of gdb know not to resume this thread automatically,
2559 if it was stopped due to an internal event. Limit this to
2560 non-stop mode, as when debugging a multi-threaded application in
2561 all-stop mode, we will only get one stop event --- it's undefined
2562 which thread will report the event. */
2564 set_stop_requested (ptid, 1);
2567 /* Stop the execution of the target while running in async mode, in
2568 the backgound. In all-stop, stop the whole process. In non-stop
2569 mode, stop the current thread only by default, or stop all threads
2570 if the `-a' switch is used. */
2572 /* interrupt [-a] */
2574 interrupt_target_command (char *args, int from_tty)
2576 if (target_can_async_p ())
2578 int all_threads = 0;
2580 dont_repeat (); /* Not for the faint of heart */
2583 && strncmp (args, "-a", sizeof ("-a") - 1) == 0)
2586 if (!non_stop && all_threads)
2587 error (_("-a is meaningless in all-stop mode."));
2589 interrupt_target_1 (all_threads);
2594 print_float_info (struct ui_file *file,
2595 struct frame_info *frame, const char *args)
2597 struct gdbarch *gdbarch = get_frame_arch (frame);
2599 if (gdbarch_print_float_info_p (gdbarch))
2600 gdbarch_print_float_info (gdbarch, file, frame, args);
2604 int printed_something = 0;
2607 regnum < gdbarch_num_regs (gdbarch)
2608 + gdbarch_num_pseudo_regs (gdbarch);
2611 if (gdbarch_register_reggroup_p (gdbarch, regnum, float_reggroup))
2613 printed_something = 1;
2614 gdbarch_print_registers_info (gdbarch, file, frame, regnum, 1);
2617 if (!printed_something)
2618 fprintf_filtered (file, "\
2619 No floating-point info available for this processor.\n");
2624 float_info (char *args, int from_tty)
2626 if (!target_has_registers)
2627 error (_("The program has no registers now."));
2629 print_float_info (gdb_stdout, get_selected_frame (NULL), args);
2633 unset_command (char *args, int from_tty)
2635 printf_filtered (_("\
2636 \"unset\" must be followed by the name of an unset subcommand.\n"));
2637 help_list (unsetlist, "unset ", -1, gdb_stdout);
2641 _initialize_infcmd (void)
2643 struct cmd_list_element *c = NULL;
2645 /* add the filename of the terminal connected to inferior I/O */
2646 add_setshow_filename_cmd ("inferior-tty", class_run,
2647 &inferior_io_terminal, _("\
2648 Set terminal for future runs of program being debugged."), _("\
2649 Show terminal for future runs of program being debugged."), _("\
2650 Usage: set inferior-tty /dev/pts/1"), NULL, NULL, &setlist, &showlist);
2651 add_com_alias ("tty", "set inferior-tty", class_alias, 0);
2653 add_setshow_optional_filename_cmd ("args", class_run,
2654 &inferior_args, _("\
2655 Set argument list to give program being debugged when it is started."), _("\
2656 Show argument list to give program being debugged when it is started."), _("\
2657 Follow this command with any number of args, to be passed to the program."),
2660 &setlist, &showlist);
2662 c = add_cmd ("environment", no_class, environment_info, _("\
2663 The environment to give the program, or one variable's value.\n\
2664 With an argument VAR, prints the value of environment variable VAR to\n\
2665 give the program being debugged. With no arguments, prints the entire\n\
2666 environment to be given to the program."), &showlist);
2667 set_cmd_completer (c, noop_completer);
2669 add_prefix_cmd ("unset", no_class, unset_command,
2670 _("Complement to certain \"set\" commands."),
2671 &unsetlist, "unset ", 0, &cmdlist);
2673 c = add_cmd ("environment", class_run, unset_environment_command, _("\
2674 Cancel environment variable VAR for the program.\n\
2675 This does not affect the program until the next \"run\" command."),
2677 set_cmd_completer (c, noop_completer);
2679 c = add_cmd ("environment", class_run, set_environment_command, _("\
2680 Set environment variable value to give the program.\n\
2681 Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\
2682 VALUES of environment variables are uninterpreted strings.\n\
2683 This does not affect the program until the next \"run\" command."),
2685 set_cmd_completer (c, noop_completer);
2687 c = add_com ("path", class_files, path_command, _("\
2688 Add directory DIR(s) to beginning of search path for object files.\n\
2689 $cwd in the path means the current working directory.\n\
2690 This path is equivalent to the $PATH shell variable. It is a list of\n\
2691 directories, separated by colons. These directories are searched to find\n\
2692 fully linked executable files and separately compiled object files as needed."));
2693 set_cmd_completer (c, filename_completer);
2695 c = add_cmd ("paths", no_class, path_info, _("\
2696 Current search path for finding object files.\n\
2697 $cwd in the path means the current working directory.\n\
2698 This path is equivalent to the $PATH shell variable. It is a list of\n\
2699 directories, separated by colons. These directories are searched to find\n\
2700 fully linked executable files and separately compiled object files as needed."),
2702 set_cmd_completer (c, noop_completer);
2704 add_prefix_cmd ("kill", class_run, kill_command,
2705 _("Kill execution of program being debugged."),
2706 &killlist, "kill ", 0, &cmdlist);
2708 add_com ("attach", class_run, attach_command, _("\
2709 Attach to a process or file outside of GDB.\n\
2710 This command attaches to another target, of the same type as your last\n\
2711 \"target\" command (\"info files\" will show your target stack).\n\
2712 The command may take as argument a process id or a device file.\n\
2713 For a process id, you must have permission to send the process a signal,\n\
2714 and it must have the same effective uid as the debugger.\n\
2715 When using \"attach\" with a process id, the debugger finds the\n\
2716 program running in the process, looking first in the current working\n\
2717 directory, or (if not found there) using the source file search path\n\
2718 (see the \"directory\" command). You can also use the \"file\" command\n\
2719 to specify the program, and to load its symbol table."));
2721 add_prefix_cmd ("detach", class_run, detach_command, _("\
2722 Detach a process or file previously attached.\n\
2723 If a process, it is no longer traced, and it continues its execution. If\n\
2724 you were debugging a file, the file is closed and gdb no longer accesses it."),
2725 &detachlist, "detach ", 0, &cmdlist);
2727 add_com ("disconnect", class_run, disconnect_command, _("\
2728 Disconnect from a target.\n\
2729 The target will wait for another debugger to connect. Not available for\n\
2732 add_com ("signal", class_run, signal_command, _("\
2733 Continue program giving it signal specified by the argument.\n\
2734 An argument of \"0\" means continue program without giving it a signal."));
2736 add_com ("stepi", class_run, stepi_command, _("\
2737 Step one instruction exactly.\n\
2738 Argument N means do this N times (or till program stops for another reason)."));
2739 add_com_alias ("si", "stepi", class_alias, 0);
2741 add_com ("nexti", class_run, nexti_command, _("\
2742 Step one instruction, but proceed through subroutine calls.\n\
2743 Argument N means do this N times (or till program stops for another reason)."));
2744 add_com_alias ("ni", "nexti", class_alias, 0);
2746 add_com ("finish", class_run, finish_command, _("\
2747 Execute until selected stack frame returns.\n\
2748 Upon return, the value returned is printed and put in the value history."));
2749 add_com_alias ("fin", "finish", class_run, 1);
2751 add_com ("next", class_run, next_command, _("\
2752 Step program, proceeding through subroutine calls.\n\
2753 Like the \"step\" command as long as subroutine calls do not happen;\n\
2754 when they do, the call is treated as one instruction.\n\
2755 Argument N means do this N times (or till program stops for another reason)."));
2756 add_com_alias ("n", "next", class_run, 1);
2758 add_com_alias ("S", "next", class_run, 1);
2760 add_com ("step", class_run, step_command, _("\
2761 Step program until it reaches a different source line.\n\
2762 Argument N means do this N times (or till program stops for another reason)."));
2763 add_com_alias ("s", "step", class_run, 1);
2765 c = add_com ("until", class_run, until_command, _("\
2766 Execute until the program reaches a source line greater than the current\n\
2767 or a specified location (same args as break command) within the current frame."));
2768 set_cmd_completer (c, location_completer);
2769 add_com_alias ("u", "until", class_run, 1);
2771 c = add_com ("advance", class_run, advance_command, _("\
2772 Continue the program up to the given location (same form as args for break command).\n\
2773 Execution will also stop upon exit from the current stack frame."));
2774 set_cmd_completer (c, location_completer);
2776 c = add_com ("jump", class_run, jump_command, _("\
2777 Continue program being debugged at specified line or address.\n\
2778 Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\
2779 for an address to start at."));
2780 set_cmd_completer (c, location_completer);
2784 c = add_com ("go", class_run, go_command, _("\
2785 Usage: go <location>\n\
2786 Continue program being debugged, stopping at specified line or \n\
2788 Give as argument either LINENUM or *ADDR, where ADDR is an \n\
2789 expression for an address to start at.\n\
2790 This command is a combination of tbreak and jump."));
2791 set_cmd_completer (c, location_completer);
2795 add_com_alias ("g", "go", class_run, 1);
2797 c = add_com ("continue", class_run, continue_command, _("\
2798 Continue program being debugged, after signal or breakpoint.\n\
2799 If proceeding from breakpoint, a number N may be used as an argument,\n\
2800 which means to set the ignore count of that breakpoint to N - 1 (so that\n\
2801 the breakpoint won't break until the Nth time it is reached).\n\
2803 If non-stop mode is enabled, continue only the current thread,\n\
2804 otherwise all the threads in the program are continued. To \n\
2805 continue all stopped threads in non-stop mode, use the -a option.\n\
2806 Specifying -a and an ignore count simultaneously is an error."));
2807 add_com_alias ("c", "cont", class_run, 1);
2808 add_com_alias ("fg", "cont", class_run, 1);
2810 c = add_com ("run", class_run, run_command, _("\
2811 Start debugged program. You may specify arguments to give it.\n\
2812 Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\
2813 Input and output redirection with \">\", \"<\", or \">>\" are also allowed.\n\n\
2814 With no arguments, uses arguments last specified (with \"run\" or \"set args\").\n\
2815 To cancel previous arguments and run with no arguments,\n\
2816 use \"set args\" without arguments."));
2817 set_cmd_completer (c, filename_completer);
2818 add_com_alias ("r", "run", class_run, 1);
2820 add_com ("R", class_run, run_no_args_command,
2821 _("Start debugged program with no arguments."));
2823 c = add_com ("start", class_run, start_command, _("\
2824 Run the debugged program until the beginning of the main procedure.\n\
2825 You may specify arguments to give to your program, just as with the\n\
2826 \"run\" command."));
2827 set_cmd_completer (c, filename_completer);
2829 c = add_com ("interrupt", class_run, interrupt_target_command,
2830 _("Interrupt the execution of the debugged program.\n\
2831 If non-stop mode is enabled, interrupt only the current thread,\n\
2832 otherwise all the threads in the program are stopped. To \n\
2833 interrupt all running threads in non-stop mode, use the -a option."));
2835 add_info ("registers", nofp_registers_info, _("\
2836 List of integer registers and their contents, for selected stack frame.\n\
2837 Register name as argument means describe only that register."));
2838 add_info_alias ("r", "registers", 1);
2841 add_com ("lr", class_info, nofp_registers_info, _("\
2842 List of integer registers and their contents, for selected stack frame.\n\
2843 Register name as argument means describe only that register."));
2844 add_info ("all-registers", all_registers_info, _("\
2845 List of all registers and their contents, for selected stack frame.\n\
2846 Register name as argument means describe only that register."));
2848 add_info ("program", program_info,
2849 _("Execution status of the program."));
2851 add_info ("float", float_info,
2852 _("Print the status of the floating point unit\n"));
2854 add_info ("vector", vector_info,
2855 _("Print the status of the vector unit\n"));
2857 inferior_environ = make_environ ();
2858 init_environ (inferior_environ);