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 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/>. */
24 #include "gdb_string.h"
38 #include "completer.h"
40 #include "event-top.h"
41 #include "parser-defs.h"
43 #include "reggroups.h"
47 #include "gdb_assert.h"
49 #include "target-descriptions.h"
51 /* Functions exported for general use, in inferior.h: */
53 void all_registers_info (char *, int);
55 void registers_info (char *, int);
57 void nexti_command (char *, int);
59 void stepi_command (char *, int);
61 void continue_command (char *, int);
63 void interrupt_target_command (char *args
, int from_tty
);
65 /* Local functions: */
67 static void nofp_registers_info (char *, int);
69 static void print_return_value (struct type
*value_type
);
71 static void finish_command_continuation (struct continuation_arg
*);
73 static void until_next_command (int);
75 static void until_command (char *, int);
77 static void path_info (char *, int);
79 static void path_command (char *, int);
81 static void unset_command (char *, int);
83 static void float_info (char *, int);
85 static void detach_command (char *, int);
87 static void disconnect_command (char *, int);
89 static void unset_environment_command (char *, int);
91 static void set_environment_command (char *, int);
93 static void environment_info (char *, int);
95 static void program_info (char *, int);
97 static void finish_command (char *, int);
99 static void signal_command (char *, int);
101 static void jump_command (char *, int);
103 static void step_1 (int, int, char *);
104 static void step_once (int skip_subroutines
, int single_inst
, int count
);
105 static void step_1_continuation (struct continuation_arg
*arg
);
107 static void next_command (char *, int);
109 static void step_command (char *, int);
111 static void run_command (char *, int);
113 static void run_no_args_command (char *args
, int from_tty
);
115 static void go_command (char *line_no
, int from_tty
);
117 static int strip_bg_char (char **);
119 void _initialize_infcmd (void);
121 #define GO_USAGE "Usage: go <location>\n"
123 #define ERROR_NO_INFERIOR \
124 if (!target_has_execution) error (_("The program is not being run."));
126 /* String containing arguments to give to the program, separated by spaces.
127 Empty string (pointer to '\0') means no args. */
129 static char *inferior_args
;
131 /* The inferior arguments as a vector. If INFERIOR_ARGC is nonzero,
132 then we must compute INFERIOR_ARGS from this (via the target). */
134 static int inferior_argc
;
135 static char **inferior_argv
;
137 /* File name for default use for standard in/out in the inferior. */
139 static char *inferior_io_terminal
;
141 /* Pid of our debugged inferior, or 0 if no inferior now.
142 Since various parts of infrun.c test this to see whether there is a program
143 being debugged it should be nonzero (currently 3 is used) for remote
146 ptid_t inferior_ptid
;
148 /* Last signal that the inferior received (why it stopped). */
150 enum target_signal stop_signal
;
152 /* Address at which inferior stopped. */
156 /* Chain containing status of breakpoint(s) that we have stopped at. */
160 /* Flag indicating that a command has proceeded the inferior past the
161 current breakpoint. */
163 int breakpoint_proceeded
;
165 /* Nonzero if stopped due to a step command. */
169 /* Nonzero if stopped due to completion of a stack dummy routine. */
171 int stop_stack_dummy
;
173 /* Nonzero if stopped due to a random (unexpected) signal in inferior
176 int stopped_by_random_signal
;
178 /* Range to single step within.
179 If this is nonzero, respond to a single-step signal
180 by continuing to step if the pc is in this range. */
182 CORE_ADDR step_range_start
; /* Inclusive */
183 CORE_ADDR step_range_end
; /* Exclusive */
185 /* Stack frame address as of when stepping command was issued.
186 This is how we know when we step into a subroutine call,
187 and how to set the frame for the breakpoint used to step out. */
189 struct frame_id step_frame_id
;
191 enum step_over_calls_kind step_over_calls
;
193 /* If stepping, nonzero means step count is > 1
194 so don't print frame next time inferior stops
195 if it stops due to stepping. */
199 /* Environment to use for running inferior,
200 in format described in environ.h. */
202 struct gdb_environ
*inferior_environ
;
204 /* Accessor routines. */
207 set_inferior_io_terminal (const char *terminal_name
)
209 if (inferior_io_terminal
)
210 xfree (inferior_io_terminal
);
213 inferior_io_terminal
= NULL
;
215 inferior_io_terminal
= savestring (terminal_name
, strlen (terminal_name
));
219 get_inferior_io_terminal (void)
221 return inferior_io_terminal
;
225 get_inferior_args (void)
227 if (inferior_argc
!= 0)
231 n
= gdbarch_construct_inferior_arguments (current_gdbarch
,
232 inferior_argc
, inferior_argv
);
233 old
= set_inferior_args (n
);
237 if (inferior_args
== NULL
)
238 inferior_args
= xstrdup ("");
240 return inferior_args
;
244 set_inferior_args (char *newargs
)
246 char *saved_args
= inferior_args
;
248 inferior_args
= newargs
;
256 set_inferior_args_vector (int argc
, char **argv
)
258 inferior_argc
= argc
;
259 inferior_argv
= argv
;
262 /* Notice when `set args' is run. */
264 notice_args_set (char *args
, int from_tty
, struct cmd_list_element
*c
)
270 /* Notice when `show args' is run. */
272 notice_args_read (struct ui_file
*file
, int from_tty
,
273 struct cmd_list_element
*c
, const char *value
)
275 deprecated_show_value_hack (file
, from_tty
, c
, value
);
276 /* Might compute the value. */
277 get_inferior_args ();
281 /* Compute command-line string given argument vector. This does the
282 same shell processing as fork_inferior. */
284 construct_inferior_arguments (struct gdbarch
*gdbarch
, int argc
, char **argv
)
288 if (STARTUP_WITH_SHELL
)
290 /* This holds all the characters considered special to the
291 typical Unix shells. We include `^' because the SunOS
292 /bin/sh treats it as a synonym for `|'. */
293 char *special
= "\"!#$&*()\\|[]{}<>?'\"`~^; \t\n";
298 /* We over-compute the size. It shouldn't matter. */
299 for (i
= 0; i
< argc
; ++i
)
300 length
+= 2 * strlen (argv
[i
]) + 1 + 2 * (argv
[i
][0] == '\0');
302 result
= (char *) xmalloc (length
);
305 for (i
= 0; i
< argc
; ++i
)
310 /* Need to handle empty arguments specially. */
311 if (argv
[i
][0] == '\0')
318 for (cp
= argv
[i
]; *cp
; ++cp
)
320 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 argument containing whitespace"));
344 length
+= strlen (argv
[i
]) + 1;
347 result
= (char *) xmalloc (length
);
349 for (i
= 0; i
< argc
; ++i
)
352 strcat (result
, " ");
353 strcat (result
, argv
[i
]);
361 /* This function detects whether or not a '&' character (indicating
362 background execution) has been added as *the last* of the arguments ARGS
363 of a command. If it has, it removes it and returns 1. Otherwise it
364 does nothing and returns 0. */
366 strip_bg_char (char **args
)
370 p
= strchr (*args
, '&');
374 if (p
== (*args
+ strlen (*args
) - 1))
376 if (strlen (*args
) > 1)
380 while (*p
== ' ' || *p
== '\t');
392 tty_command (char *file
, int from_tty
)
395 error_no_arg (_("terminal name for running target process"));
397 set_inferior_io_terminal (file
);
400 /* Common actions to take after creating any sort of inferior, by any
401 means (running, attaching, connecting, et cetera). The target
402 should be stopped. */
405 post_create_inferior (struct target_ops
*target
, int from_tty
)
407 /* Be sure we own the terminal in case write operations are performed. */
408 target_terminal_ours ();
410 /* If the target hasn't taken care of this already, do it now.
411 Targets which need to access registers during to_open,
412 to_create_inferior, or to_attach should do it earlier; but many
414 target_find_description ();
418 /* Sometimes the platform-specific hook loads initial shared
419 libraries, and sometimes it doesn't. Try to do so first, so
420 that we can add them with the correct value for FROM_TTY.
421 If we made all the inferior hook methods consistent,
422 this call could be removed. */
424 SOLIB_ADD (NULL
, from_tty
, target
, auto_solib_add
);
426 solib_add (NULL
, from_tty
, target
, auto_solib_add
);
429 /* Create the hooks to handle shared library load and unload
431 #ifdef SOLIB_CREATE_INFERIOR_HOOK
432 SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid
));
434 solib_create_inferior_hook ();
438 observer_notify_inferior_created (target
, from_tty
);
441 /* Kill the inferior if already running. This function is designed
442 to be called when we are about to start the execution of the program
443 from the beginning. Ask the user to confirm that he wants to restart
444 the program being debugged when FROM_TTY is non-null. */
447 kill_if_already_running (int from_tty
)
449 if (! ptid_equal (inferior_ptid
, null_ptid
) && target_has_execution
)
452 && !query ("The program being debugged has been started already.\n\
453 Start it from the beginning? "))
454 error (_("Program not restarted."));
456 #if defined(SOLIB_RESTART)
459 init_wait_for_inferior ();
463 /* Implement the "run" command. If TBREAK_AT_MAIN is set, then insert
464 a temporary breakpoint at the begining of the main program before
465 running the program. */
468 run_command_1 (char *args
, int from_tty
, int tbreak_at_main
)
474 kill_if_already_running (from_tty
);
475 clear_breakpoint_hit_counts ();
477 /* Clean up any leftovers from other runs. Some other things from
478 this function should probably be moved into target_pre_inferior. */
479 target_pre_inferior (from_tty
);
481 /* Purge old solib objfiles. */
482 objfile_purge_solibs ();
484 do_run_cleanups (NULL
);
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 /* We keep symbols from add-symbol-file, on the grounds that the
503 user might want to add some symbols before running the program
504 (right?). But sometimes (dynamic loading where the user manually
505 introduces the new symbols with add-symbol-file), the code which
506 the symbols describe does not persist between runs. Currently
507 the user has to manually nuke all symbols between runs if they
508 want them to go away (PR 2207). This is probably reasonable. */
512 if (target_can_async_p ())
513 async_disable_stdin ();
517 int async_exec
= strip_bg_char (&args
);
519 /* If we get a request for running in the bg but the target
520 doesn't support it, error out. */
521 if (async_exec
&& !target_can_async_p ())
522 error (_("Asynchronous execution not supported on this target."));
524 /* If we don't get a request of running in the bg, then we need
525 to simulate synchronous (fg) execution. */
526 if (!async_exec
&& target_can_async_p ())
528 /* Simulate synchronous execution */
529 async_disable_stdin ();
532 /* If there were other args, beside '&', process them. */
535 char *old_args
= set_inferior_args (xstrdup (args
));
542 ui_out_field_string (uiout
, NULL
, "Starting program");
543 ui_out_text (uiout
, ": ");
545 ui_out_field_string (uiout
, "execfile", exec_file
);
546 ui_out_spaces (uiout
, 1);
547 /* We call get_inferior_args() because we might need to compute
549 ui_out_field_string (uiout
, "infargs", get_inferior_args ());
550 ui_out_text (uiout
, "\n");
551 ui_out_flush (uiout
);
554 /* We call get_inferior_args() because we might need to compute
556 target_create_inferior (exec_file
, get_inferior_args (),
557 environ_vector (inferior_environ
), from_tty
);
559 /* Pass zero for FROM_TTY, because at this point the "run" command
560 has done its thing; now we are setting up the running program. */
561 post_create_inferior (¤t_target
, 0);
563 /* Start the target running. */
564 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_0
, 0);
569 run_command (char *args
, int from_tty
)
571 run_command_1 (args
, from_tty
, 0);
575 run_no_args_command (char *args
, int from_tty
)
577 char *old_args
= set_inferior_args (xstrdup (""));
582 /* Start the execution of the program up until the beginning of the main
586 start_command (char *args
, int from_tty
)
588 /* Some languages such as Ada need to search inside the program
589 minimal symbols for the location where to put the temporary
590 breakpoint before starting. */
591 if (!have_minimal_symbols ())
592 error (_("No symbol table loaded. Use the \"file\" command."));
594 /* Run the program until reaching the main procedure... */
595 run_command_1 (args
, from_tty
, 1);
599 continue_command (char *proc_count_exp
, int from_tty
)
604 /* Find out whether we must run in the background. */
605 if (proc_count_exp
!= NULL
)
606 async_exec
= strip_bg_char (&proc_count_exp
);
608 /* If we must run in the background, but the target can't do it,
610 if (async_exec
&& !target_can_async_p ())
611 error (_("Asynchronous execution not supported on this target."));
613 /* If we are not asked to run in the bg, then prepare to run in the
614 foreground, synchronously. */
615 if (!async_exec
&& target_can_async_p ())
617 /* Simulate synchronous execution */
618 async_disable_stdin ();
621 /* If have argument (besides '&'), set proceed count of breakpoint
623 if (proc_count_exp
!= NULL
)
625 bpstat bs
= stop_bpstat
;
629 while ((stat
= bpstat_num (&bs
, &num
)) != 0)
632 set_ignore_count (num
,
633 parse_and_eval_long (proc_count_exp
) - 1,
635 /* set_ignore_count prints a message ending with a period.
636 So print two spaces before "Continuing.". */
638 printf_filtered (" ");
642 if (!stopped
&& from_tty
)
645 ("Not stopped at any breakpoint; argument ignored.\n");
650 printf_filtered (_("Continuing.\n"));
652 clear_proceed_status ();
654 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
657 /* Step until outside of current statement. */
660 step_command (char *count_string
, int from_tty
)
662 step_1 (0, 0, count_string
);
665 /* Likewise, but skip over subroutine calls as if single instructions. */
668 next_command (char *count_string
, int from_tty
)
670 step_1 (1, 0, count_string
);
673 /* Likewise, but step only one instruction. */
676 stepi_command (char *count_string
, int from_tty
)
678 step_1 (0, 1, count_string
);
682 nexti_command (char *count_string
, int from_tty
)
684 step_1 (1, 1, count_string
);
688 disable_longjmp_breakpoint_cleanup (void *ignore
)
690 disable_longjmp_breakpoint ();
694 step_1 (int skip_subroutines
, int single_inst
, char *count_string
)
697 struct frame_info
*frame
;
698 struct cleanup
*cleanups
= 0;
704 async_exec
= strip_bg_char (&count_string
);
706 /* If we get a request for running in the bg but the target
707 doesn't support it, error out. */
708 if (async_exec
&& !target_can_async_p ())
709 error (_("Asynchronous execution not supported on this target."));
711 /* If we don't get a request of running in the bg, then we need
712 to simulate synchronous (fg) execution. */
713 if (!async_exec
&& target_can_async_p ())
715 /* Simulate synchronous execution */
716 async_disable_stdin ();
719 count
= count_string
? parse_and_eval_long (count_string
) : 1;
721 if (!single_inst
|| skip_subroutines
) /* leave si command alone */
723 enable_longjmp_breakpoint ();
724 if (!target_can_async_p ())
725 cleanups
= make_cleanup (disable_longjmp_breakpoint_cleanup
, 0 /*ignore*/);
727 make_exec_cleanup (disable_longjmp_breakpoint_cleanup
, 0 /*ignore*/);
730 /* In synchronous case, all is well, just use the regular for loop. */
731 if (!target_can_async_p ())
733 for (; count
> 0; count
--)
735 clear_proceed_status ();
737 frame
= get_current_frame ();
738 if (!frame
) /* Avoid coredump here. Why tho? */
739 error (_("No current frame"));
740 step_frame_id
= get_frame_id (frame
);
744 find_pc_line_pc_range (stop_pc
, &step_range_start
, &step_range_end
);
745 if (step_range_end
== 0)
748 if (find_pc_partial_function (stop_pc
, &name
, &step_range_start
,
749 &step_range_end
) == 0)
750 error (_("Cannot find bounds of current function"));
752 target_terminal_ours ();
753 printf_filtered (_("\
754 Single stepping until exit from function %s, \n\
755 which has no line number information.\n"), name
);
760 /* Say we are stepping, but stop after one insn whatever it does. */
761 step_range_start
= step_range_end
= 1;
762 if (!skip_subroutines
)
764 Don't step over function calls, not even to functions lacking
766 step_over_calls
= STEP_OVER_NONE
;
769 if (skip_subroutines
)
770 step_over_calls
= STEP_OVER_ALL
;
772 step_multi
= (count
> 1);
773 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
779 if (!single_inst
|| skip_subroutines
)
780 do_cleanups (cleanups
);
783 /* In case of asynchronous target things get complicated, do only
784 one step for now, before returning control to the event loop. Let
785 the continuation figure out how many other steps we need to do,
786 and handle them one at the time, through step_once(). */
789 if (target_can_async_p ())
790 step_once (skip_subroutines
, single_inst
, count
);
794 /* Called after we are done with one step operation, to check whether
795 we need to step again, before we print the prompt and return control
796 to the user. If count is > 1, we will need to do one more call to
797 proceed(), via step_once(). Basically it is like step_once and
798 step_1_continuation are co-recursive. */
800 step_1_continuation (struct continuation_arg
*arg
)
803 int skip_subroutines
;
806 skip_subroutines
= arg
->data
.integer
;
807 single_inst
= arg
->next
->data
.integer
;
808 count
= arg
->next
->next
->data
.integer
;
811 step_once (skip_subroutines
, single_inst
, count
- 1);
813 if (!single_inst
|| skip_subroutines
)
814 do_exec_cleanups (ALL_CLEANUPS
);
817 /* Do just one step operation. If count >1 we will have to set up a
818 continuation to be done after the target stops (after this one
819 step). This is useful to implement the 'step n' kind of commands, in
820 case of asynchronous targets. We had to split step_1 into two parts,
821 one to be done before proceed() and one afterwards. This function is
822 called in case of step n with n>1, after the first step operation has
825 step_once (int skip_subroutines
, int single_inst
, int count
)
827 struct continuation_arg
*arg1
;
828 struct continuation_arg
*arg2
;
829 struct continuation_arg
*arg3
;
830 struct frame_info
*frame
;
834 clear_proceed_status ();
836 frame
= get_current_frame ();
837 if (!frame
) /* Avoid coredump here. Why tho? */
838 error (_("No current frame"));
839 step_frame_id
= get_frame_id (frame
);
843 find_pc_line_pc_range (stop_pc
, &step_range_start
, &step_range_end
);
845 /* If we have no line info, switch to stepi mode. */
846 if (step_range_end
== 0 && step_stop_if_no_debug
)
848 step_range_start
= step_range_end
= 1;
850 else if (step_range_end
== 0)
853 if (find_pc_partial_function (stop_pc
, &name
, &step_range_start
,
854 &step_range_end
) == 0)
855 error (_("Cannot find bounds of current function"));
857 target_terminal_ours ();
858 printf_filtered (_("\
859 Single stepping until exit from function %s, \n\
860 which has no line number information.\n"), name
);
865 /* Say we are stepping, but stop after one insn whatever it does. */
866 step_range_start
= step_range_end
= 1;
867 if (!skip_subroutines
)
869 Don't step over function calls, not even to functions lacking
871 step_over_calls
= STEP_OVER_NONE
;
874 if (skip_subroutines
)
875 step_over_calls
= STEP_OVER_ALL
;
877 step_multi
= (count
> 1);
879 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
881 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
883 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
885 arg1
->data
.integer
= skip_subroutines
;
887 arg2
->data
.integer
= single_inst
;
889 arg3
->data
.integer
= count
;
890 add_intermediate_continuation (step_1_continuation
, arg1
);
891 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
896 /* Continue program at specified address. */
899 jump_command (char *arg
, int from_tty
)
902 struct symtabs_and_lines sals
;
903 struct symtab_and_line sal
;
910 /* Find out whether we must run in the background. */
912 async_exec
= strip_bg_char (&arg
);
914 /* If we must run in the background, but the target can't do it,
916 if (async_exec
&& !target_can_async_p ())
917 error (_("Asynchronous execution not supported on this target."));
919 /* If we are not asked to run in the bg, then prepare to run in the
920 foreground, synchronously. */
921 if (!async_exec
&& target_can_async_p ())
923 /* Simulate synchronous execution */
924 async_disable_stdin ();
928 error_no_arg (_("starting address"));
930 sals
= decode_line_spec_1 (arg
, 1);
933 error (_("Unreasonable jump request"));
939 if (sal
.symtab
== 0 && sal
.pc
== 0)
940 error (_("No source file has been specified."));
942 resolve_sal_pc (&sal
); /* May error out */
944 /* See if we are trying to jump to another function. */
945 fn
= get_frame_function (get_current_frame ());
946 sfn
= find_pc_function (sal
.pc
);
947 if (fn
!= NULL
&& sfn
!= fn
)
949 if (!query ("Line %d is not in `%s'. Jump anyway? ", sal
.line
,
950 SYMBOL_PRINT_NAME (fn
)))
952 error (_("Not confirmed."));
959 fixup_symbol_section (sfn
, 0);
960 if (section_is_overlay (SYMBOL_BFD_SECTION (sfn
)) &&
961 !section_is_mapped (SYMBOL_BFD_SECTION (sfn
)))
963 if (!query ("WARNING!!! Destination is in unmapped overlay! Jump anyway? "))
965 error (_("Not confirmed."));
975 printf_filtered (_("Continuing at "));
976 deprecated_print_address_numeric (addr
, 1, gdb_stdout
);
977 printf_filtered (".\n");
980 clear_proceed_status ();
981 proceed (addr
, TARGET_SIGNAL_0
, 0);
985 /* Go to line or address in current procedure */
987 go_command (char *line_no
, int from_tty
)
989 if (line_no
== (char *) NULL
|| !*line_no
)
990 printf_filtered (GO_USAGE
);
993 tbreak_command (line_no
, from_tty
);
994 jump_command (line_no
, from_tty
);
999 /* Continue program giving it specified signal. */
1002 signal_command (char *signum_exp
, int from_tty
)
1004 enum target_signal oursig
;
1006 dont_repeat (); /* Too dangerous. */
1010 error_no_arg (_("signal number"));
1012 /* It would be even slicker to make signal names be valid expressions,
1013 (the type could be "enum $signal" or some such), then the user could
1014 assign them to convenience variables. */
1015 oursig
= target_signal_from_name (signum_exp
);
1017 if (oursig
== TARGET_SIGNAL_UNKNOWN
)
1019 /* No, try numeric. */
1020 int num
= parse_and_eval_long (signum_exp
);
1023 oursig
= TARGET_SIGNAL_0
;
1025 oursig
= target_signal_from_command (num
);
1030 if (oursig
== TARGET_SIGNAL_0
)
1031 printf_filtered (_("Continuing with no signal.\n"));
1033 printf_filtered (_("Continuing with signal %s.\n"),
1034 target_signal_to_name (oursig
));
1037 clear_proceed_status ();
1038 /* "signal 0" should not get stuck if we are stopped at a breakpoint.
1039 FIXME: Neither should "signal foo" but when I tried passing
1040 (CORE_ADDR)-1 unconditionally I got a testsuite failure which I haven't
1041 tried to track down yet. */
1042 proceed (oursig
== TARGET_SIGNAL_0
? (CORE_ADDR
) -1 : stop_pc
, oursig
, 0);
1045 /* Proceed until we reach a different source line with pc greater than
1046 our current one or exit the function. We skip calls in both cases.
1048 Note that eventually this command should probably be changed so
1049 that only source lines are printed out when we hit the breakpoint
1050 we set. This may involve changes to wait_for_inferior and the
1051 proceed status code. */
1054 until_next_command (int from_tty
)
1056 struct frame_info
*frame
;
1058 struct symbol
*func
;
1059 struct symtab_and_line sal
;
1061 clear_proceed_status ();
1063 frame
= get_current_frame ();
1065 /* Step until either exited from this function or greater
1066 than the current line (if in symbolic section) or pc (if
1070 func
= find_pc_function (pc
);
1074 struct minimal_symbol
*msymbol
= lookup_minimal_symbol_by_pc (pc
);
1076 if (msymbol
== NULL
)
1077 error (_("Execution is not within a known function."));
1079 step_range_start
= SYMBOL_VALUE_ADDRESS (msymbol
);
1080 step_range_end
= pc
;
1084 sal
= find_pc_line (pc
, 0);
1086 step_range_start
= BLOCK_START (SYMBOL_BLOCK_VALUE (func
));
1087 step_range_end
= sal
.end
;
1090 step_over_calls
= STEP_OVER_ALL
;
1091 step_frame_id
= get_frame_id (frame
);
1093 step_multi
= 0; /* Only one call to proceed */
1095 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
1099 until_command (char *arg
, int from_tty
)
1103 if (!target_has_execution
)
1104 error (_("The program is not running."));
1106 /* Find out whether we must run in the background. */
1108 async_exec
= strip_bg_char (&arg
);
1110 /* If we must run in the background, but the target can't do it,
1112 if (async_exec
&& !target_can_async_p ())
1113 error (_("Asynchronous execution not supported on this target."));
1115 /* If we are not asked to run in the bg, then prepare to run in the
1116 foreground, synchronously. */
1117 if (!async_exec
&& target_can_async_p ())
1119 /* Simulate synchronous execution */
1120 async_disable_stdin ();
1124 until_break_command (arg
, from_tty
, 0);
1126 until_next_command (from_tty
);
1130 advance_command (char *arg
, int from_tty
)
1134 if (!target_has_execution
)
1135 error (_("The program is not running."));
1138 error_no_arg (_("a location"));
1140 /* Find out whether we must run in the background. */
1142 async_exec
= strip_bg_char (&arg
);
1144 /* If we must run in the background, but the target can't do it,
1146 if (async_exec
&& !target_can_async_p ())
1147 error (_("Asynchronous execution not supported on this target."));
1149 /* If we are not asked to run in the bg, then prepare to run in the
1150 foreground, synchronously. */
1151 if (!async_exec
&& target_can_async_p ())
1153 /* Simulate synchronous execution. */
1154 async_disable_stdin ();
1157 until_break_command (arg
, from_tty
, 1);
1160 /* Print the result of a function at the end of a 'finish' command. */
1163 print_return_value (struct type
*value_type
)
1165 struct gdbarch
*gdbarch
= current_gdbarch
;
1166 struct cleanup
*old_chain
;
1167 struct ui_stream
*stb
;
1168 struct value
*value
;
1170 CHECK_TYPEDEF (value_type
);
1171 gdb_assert (TYPE_CODE (value_type
) != TYPE_CODE_VOID
);
1173 /* FIXME: 2003-09-27: When returning from a nested inferior function
1174 call, it's possible (with no help from the architecture vector)
1175 to locate and return/print a "struct return" value. This is just
1176 a more complicated case of what is already being done in in the
1177 inferior function call code. In fact, when inferior function
1178 calls are made async, this will likely be made the norm. */
1180 switch (gdbarch_return_value (gdbarch
, value_type
, NULL
, NULL
, NULL
))
1182 case RETURN_VALUE_REGISTER_CONVENTION
:
1183 case RETURN_VALUE_ABI_RETURNS_ADDRESS
:
1184 case RETURN_VALUE_ABI_PRESERVES_ADDRESS
:
1185 value
= allocate_value (value_type
);
1186 gdbarch_return_value (current_gdbarch
, value_type
, stop_registers
,
1187 value_contents_raw (value
), NULL
);
1189 case RETURN_VALUE_STRUCT_CONVENTION
:
1193 internal_error (__FILE__
, __LINE__
, _("bad switch"));
1199 stb
= ui_out_stream_new (uiout
);
1200 old_chain
= make_cleanup_ui_out_stream_delete (stb
);
1201 ui_out_text (uiout
, "Value returned is ");
1202 ui_out_field_fmt (uiout
, "gdb-result-var", "$%d",
1203 record_latest_value (value
));
1204 ui_out_text (uiout
, " = ");
1205 value_print (value
, stb
->stream
, 0, Val_no_prettyprint
);
1206 ui_out_field_stream (uiout
, "return-value", stb
);
1207 ui_out_text (uiout
, "\n");
1208 do_cleanups (old_chain
);
1212 ui_out_text (uiout
, "Value returned has type: ");
1213 ui_out_field_string (uiout
, "return-type", TYPE_NAME (value_type
));
1214 ui_out_text (uiout
, ".");
1215 ui_out_text (uiout
, " Cannot determine contents\n");
1219 /* Stuff that needs to be done by the finish command after the target
1220 has stopped. In asynchronous mode, we wait for the target to stop
1221 in the call to poll or select in the event loop, so it is
1222 impossible to do all the stuff as part of the finish_command
1223 function itself. The only chance we have to complete this command
1224 is in fetch_inferior_event, which is called by the event loop as
1225 soon as it detects that the target has stopped. This function is
1226 called via the cmd_continuation pointer. */
1229 finish_command_continuation (struct continuation_arg
*arg
)
1231 struct symbol
*function
;
1232 struct breakpoint
*breakpoint
;
1233 struct cleanup
*cleanups
;
1235 breakpoint
= (struct breakpoint
*) arg
->data
.pointer
;
1236 function
= (struct symbol
*) arg
->next
->data
.pointer
;
1237 cleanups
= (struct cleanup
*) arg
->next
->next
->data
.pointer
;
1239 if (bpstat_find_breakpoint (stop_bpstat
, breakpoint
) != NULL
1240 && function
!= NULL
)
1242 struct type
*value_type
;
1244 value_type
= TYPE_TARGET_TYPE (SYMBOL_TYPE (function
));
1246 internal_error (__FILE__
, __LINE__
,
1247 _("finish_command: function has no target type"));
1249 if (TYPE_CODE (value_type
) != TYPE_CODE_VOID
)
1250 print_return_value (value_type
);
1253 do_exec_cleanups (cleanups
);
1256 /* "finish": Set a temporary breakpoint at the place the selected
1257 frame will return to, then continue. */
1260 finish_command (char *arg
, int from_tty
)
1262 struct symtab_and_line sal
;
1263 struct frame_info
*frame
;
1264 struct symbol
*function
;
1265 struct breakpoint
*breakpoint
;
1266 struct cleanup
*old_chain
;
1267 struct continuation_arg
*arg1
, *arg2
, *arg3
;
1271 /* Find out whether we must run in the background. */
1273 async_exec
= strip_bg_char (&arg
);
1275 /* If we must run in the background, but the target can't do it,
1277 if (async_exec
&& !target_can_async_p ())
1278 error (_("Asynchronous execution not supported on this target."));
1280 /* If we are not asked to run in the bg, then prepare to run in the
1281 foreground, synchronously. */
1282 if (!async_exec
&& target_can_async_p ())
1284 /* Simulate synchronous execution. */
1285 async_disable_stdin ();
1289 error (_("The \"finish\" command does not take any arguments."));
1290 if (!target_has_execution
)
1291 error (_("The program is not running."));
1293 frame
= get_prev_frame (get_selected_frame (_("No selected frame.")));
1295 error (_("\"finish\" not meaningful in the outermost frame."));
1297 clear_proceed_status ();
1299 sal
= find_pc_line (get_frame_pc (frame
), 0);
1300 sal
.pc
= get_frame_pc (frame
);
1302 breakpoint
= set_momentary_breakpoint (sal
, get_frame_id (frame
), bp_finish
);
1304 if (!target_can_async_p ())
1305 old_chain
= make_cleanup_delete_breakpoint (breakpoint
);
1307 old_chain
= make_exec_cleanup_delete_breakpoint (breakpoint
);
1309 /* Find the function we will return from. */
1311 function
= find_pc_function (get_frame_pc (get_selected_frame (NULL
)));
1313 /* Print info on the selected frame, including level number but not
1317 printf_filtered (_("Run till exit from "));
1318 print_stack_frame (get_selected_frame (NULL
), 1, LOCATION
);
1321 /* If running asynchronously and the target support asynchronous
1322 execution, set things up for the rest of the finish command to be
1323 completed later on, when gdb has detected that the target has
1324 stopped, in fetch_inferior_event. */
1325 if (target_can_async_p ())
1328 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
1330 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
1332 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
1336 arg1
->data
.pointer
= breakpoint
;
1337 arg2
->data
.pointer
= function
;
1338 arg3
->data
.pointer
= old_chain
;
1339 add_continuation (finish_command_continuation
, arg1
);
1342 proceed_to_finish
= 1; /* We want stop_registers, please... */
1343 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
1345 /* Do this only if not running asynchronously or if the target
1346 cannot do async execution. Otherwise, complete this command when
1347 the target actually stops, in fetch_inferior_event. */
1348 if (!target_can_async_p ())
1350 /* Did we stop at our breakpoint? */
1351 if (bpstat_find_breakpoint (stop_bpstat
, breakpoint
) != NULL
1352 && function
!= NULL
)
1354 struct type
*value_type
;
1356 value_type
= TYPE_TARGET_TYPE (SYMBOL_TYPE (function
));
1358 internal_error (__FILE__
, __LINE__
,
1359 _("finish_command: function has no target type"));
1361 if (TYPE_CODE (value_type
) != TYPE_CODE_VOID
)
1362 print_return_value (value_type
);
1365 do_cleanups (old_chain
);
1371 program_info (char *args
, int from_tty
)
1373 bpstat bs
= stop_bpstat
;
1375 int stat
= bpstat_num (&bs
, &num
);
1377 if (!target_has_execution
)
1379 printf_filtered (_("The program being debugged is not being run.\n"));
1383 target_files_info ();
1384 printf_filtered (_("Program stopped at %s.\n"),
1385 hex_string ((unsigned long) stop_pc
));
1387 printf_filtered (_("It stopped after being stepped.\n"));
1390 /* There may be several breakpoints in the same place, so this
1391 isn't as strange as it seems. */
1396 printf_filtered (_("\
1397 It stopped at a breakpoint that has since been deleted.\n"));
1400 printf_filtered (_("It stopped at breakpoint %d.\n"), num
);
1401 stat
= bpstat_num (&bs
, &num
);
1404 else if (stop_signal
!= TARGET_SIGNAL_0
)
1406 printf_filtered (_("It stopped with signal %s, %s.\n"),
1407 target_signal_to_name (stop_signal
),
1408 target_signal_to_string (stop_signal
));
1413 printf_filtered (_("\
1414 Type \"info stack\" or \"info registers\" for more information.\n"));
1419 environment_info (char *var
, int from_tty
)
1423 char *val
= get_in_environ (inferior_environ
, var
);
1426 puts_filtered (var
);
1427 puts_filtered (" = ");
1428 puts_filtered (val
);
1429 puts_filtered ("\n");
1433 puts_filtered ("Environment variable \"");
1434 puts_filtered (var
);
1435 puts_filtered ("\" not defined.\n");
1440 char **vector
= environ_vector (inferior_environ
);
1443 puts_filtered (*vector
++);
1444 puts_filtered ("\n");
1450 set_environment_command (char *arg
, int from_tty
)
1452 char *p
, *val
, *var
;
1456 error_no_arg (_("environment variable and value"));
1458 /* Find seperation between variable name and value */
1459 p
= (char *) strchr (arg
, '=');
1460 val
= (char *) strchr (arg
, ' ');
1462 if (p
!= 0 && val
!= 0)
1464 /* We have both a space and an equals. If the space is before the
1465 equals, walk forward over the spaces til we see a nonspace
1466 (possibly the equals). */
1471 /* Now if the = is after the char following the spaces,
1472 take the char following the spaces. */
1476 else if (val
!= 0 && p
== 0)
1480 error_no_arg (_("environment variable to set"));
1482 if (p
== 0 || p
[1] == 0)
1486 p
= arg
+ strlen (arg
); /* So that savestring below will work */
1490 /* Not setting variable value to null */
1492 while (*val
== ' ' || *val
== '\t')
1496 while (p
!= arg
&& (p
[-1] == ' ' || p
[-1] == '\t'))
1499 var
= savestring (arg
, p
- arg
);
1502 printf_filtered (_("\
1503 Setting environment variable \"%s\" to null value.\n"),
1505 set_in_environ (inferior_environ
, var
, "");
1508 set_in_environ (inferior_environ
, var
, val
);
1513 unset_environment_command (char *var
, int from_tty
)
1517 /* If there is no argument, delete all environment variables.
1518 Ask for confirmation if reading from the terminal. */
1519 if (!from_tty
|| query (_("Delete all environment variables? ")))
1521 free_environ (inferior_environ
);
1522 inferior_environ
= make_environ ();
1526 unset_in_environ (inferior_environ
, var
);
1529 /* Handle the execution path (PATH variable) */
1531 static const char path_var_name
[] = "PATH";
1534 path_info (char *args
, int from_tty
)
1536 puts_filtered ("Executable and object file path: ");
1537 puts_filtered (get_in_environ (inferior_environ
, path_var_name
));
1538 puts_filtered ("\n");
1541 /* Add zero or more directories to the front of the execution path. */
1544 path_command (char *dirname
, int from_tty
)
1549 env
= get_in_environ (inferior_environ
, path_var_name
);
1550 /* Can be null if path is not set */
1553 exec_path
= xstrdup (env
);
1554 mod_path (dirname
, &exec_path
);
1555 set_in_environ (inferior_environ
, path_var_name
, exec_path
);
1558 path_info ((char *) NULL
, from_tty
);
1562 /* Print out the machine register regnum. If regnum is -1, print all
1563 registers (print_all == 1) or all non-float and non-vector
1564 registers (print_all == 0).
1566 For most machines, having all_registers_info() print the
1567 register(s) one per line is good enough. If a different format is
1568 required, (eg, for MIPS or Pyramid 90x, which both have lots of
1569 regs), or there is an existing convention for showing all the
1570 registers, define the architecture method PRINT_REGISTERS_INFO to
1571 provide that format. */
1574 default_print_registers_info (struct gdbarch
*gdbarch
,
1575 struct ui_file
*file
,
1576 struct frame_info
*frame
,
1577 int regnum
, int print_all
)
1580 const int numregs
= gdbarch_num_regs (current_gdbarch
)
1581 + gdbarch_num_pseudo_regs (current_gdbarch
);
1582 gdb_byte buffer
[MAX_REGISTER_SIZE
];
1584 for (i
= 0; i
< numregs
; i
++)
1586 /* Decide between printing all regs, non-float / vector regs, or
1592 if (!gdbarch_register_reggroup_p (gdbarch
, i
, all_reggroup
))
1597 if (!gdbarch_register_reggroup_p (gdbarch
, i
, general_reggroup
))
1607 /* If the register name is empty, it is undefined for this
1608 processor, so don't display anything. */
1609 if (gdbarch_register_name (current_gdbarch
, i
) == NULL
1610 || *(gdbarch_register_name (current_gdbarch
, i
)) == '\0')
1613 fputs_filtered (gdbarch_register_name (current_gdbarch
, i
), file
);
1614 print_spaces_filtered (15 - strlen (gdbarch_register_name
1615 (current_gdbarch
, i
)), file
);
1617 /* Get the data in raw format. */
1618 if (! frame_register_read (frame
, i
, buffer
))
1620 fprintf_filtered (file
, "*value not available*\n");
1624 /* If virtual format is floating, print it that way, and in raw
1626 if (TYPE_CODE (register_type (current_gdbarch
, i
)) == TYPE_CODE_FLT
)
1630 val_print (register_type (current_gdbarch
, i
), buffer
, 0, 0,
1631 file
, 0, 1, 0, Val_pretty_default
);
1633 fprintf_filtered (file
, "\t(raw 0x");
1634 for (j
= 0; j
< register_size (current_gdbarch
, i
); j
++)
1637 if (gdbarch_byte_order (current_gdbarch
) == BFD_ENDIAN_BIG
)
1640 idx
= register_size (current_gdbarch
, i
) - 1 - j
;
1641 fprintf_filtered (file
, "%02x", (unsigned char) buffer
[idx
]);
1643 fprintf_filtered (file
, ")");
1647 /* Print the register in hex. */
1648 val_print (register_type (current_gdbarch
, i
), buffer
, 0, 0,
1649 file
, 'x', 1, 0, Val_pretty_default
);
1650 /* If not a vector register, print it also according to its
1652 if (TYPE_VECTOR (register_type (current_gdbarch
, i
)) == 0)
1654 fprintf_filtered (file
, "\t");
1655 val_print (register_type (current_gdbarch
, i
), buffer
, 0, 0,
1656 file
, 0, 1, 0, Val_pretty_default
);
1660 fprintf_filtered (file
, "\n");
1665 registers_info (char *addr_exp
, int fpregs
)
1667 struct frame_info
*frame
;
1668 int regnum
, numregs
;
1671 if (!target_has_registers
)
1672 error (_("The program has no registers now."));
1673 frame
= get_selected_frame (NULL
);
1677 gdbarch_print_registers_info (current_gdbarch
, gdb_stdout
,
1682 while (*addr_exp
!= '\0')
1687 /* Keep skipping leading white space. */
1688 if (isspace ((*addr_exp
)))
1694 /* Discard any leading ``$''. Check that there is something
1695 resembling a register following it. */
1696 if (addr_exp
[0] == '$')
1698 if (isspace ((*addr_exp
)) || (*addr_exp
) == '\0')
1699 error (_("Missing register name"));
1701 /* Find the start/end of this register name/num/group. */
1703 while ((*addr_exp
) != '\0' && !isspace ((*addr_exp
)))
1707 /* Figure out what we've found and display it. */
1709 /* A register name? */
1711 int regnum
= frame_map_name_to_regnum (frame
,
1712 start
, end
- start
);
1715 gdbarch_print_registers_info (current_gdbarch
, gdb_stdout
,
1716 frame
, regnum
, fpregs
);
1721 /* A register number? (how portable is this one?). */
1724 int regnum
= strtol (start
, &endptr
, 0);
1727 && regnum
< gdbarch_num_regs (current_gdbarch
)
1728 + gdbarch_num_pseudo_regs (current_gdbarch
))
1730 gdbarch_print_registers_info (current_gdbarch
, gdb_stdout
,
1731 frame
, regnum
, fpregs
);
1736 /* A register group? */
1738 struct reggroup
*group
;
1739 for (group
= reggroup_next (current_gdbarch
, NULL
);
1741 group
= reggroup_next (current_gdbarch
, group
))
1743 /* Don't bother with a length check. Should the user
1744 enter a short register group name, go with the first
1745 group that matches. */
1746 if (strncmp (start
, reggroup_name (group
), end
- start
) == 0)
1753 regnum
< gdbarch_num_regs (current_gdbarch
)
1754 + gdbarch_num_pseudo_regs (current_gdbarch
);
1757 if (gdbarch_register_reggroup_p (current_gdbarch
, regnum
,
1759 gdbarch_print_registers_info (current_gdbarch
,
1767 /* Nothing matched. */
1768 error (_("Invalid register `%.*s'"), (int) (end
- start
), start
);
1773 all_registers_info (char *addr_exp
, int from_tty
)
1775 registers_info (addr_exp
, 1);
1779 nofp_registers_info (char *addr_exp
, int from_tty
)
1781 registers_info (addr_exp
, 0);
1785 print_vector_info (struct gdbarch
*gdbarch
, struct ui_file
*file
,
1786 struct frame_info
*frame
, const char *args
)
1788 if (gdbarch_print_vector_info_p (gdbarch
))
1789 gdbarch_print_vector_info (gdbarch
, file
, frame
, args
);
1793 int printed_something
= 0;
1796 regnum
< gdbarch_num_regs (current_gdbarch
)
1797 + gdbarch_num_pseudo_regs (current_gdbarch
);
1800 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, vector_reggroup
))
1802 printed_something
= 1;
1803 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
1806 if (!printed_something
)
1807 fprintf_filtered (file
, "No vector information\n");
1812 vector_info (char *args
, int from_tty
)
1814 if (!target_has_registers
)
1815 error (_("The program has no registers now."));
1817 print_vector_info (current_gdbarch
, gdb_stdout
,
1818 get_selected_frame (NULL
), args
);
1824 * Should save/restore the tty state since it might be that the
1825 * program to be debugged was started on this tty and it wants
1826 * the tty in some state other than what we want. If it's running
1827 * on another terminal or without a terminal, then saving and
1828 * restoring the tty state is a harmless no-op.
1829 * This only needs to be done if we are attaching to a process.
1834 takes a program started up outside of gdb and ``attaches'' to it.
1835 This stops it cold in its tracks and allows us to start debugging it.
1836 and wait for the trace-trap that results from attaching. */
1839 attach_command (char *args
, int from_tty
)
1842 char *full_exec_path
= NULL
;
1844 dont_repeat (); /* Not for the faint of heart */
1846 if (target_has_execution
)
1848 if (query ("A program is being debugged already. Kill it? "))
1851 error (_("Not killed."));
1854 /* Clean up any leftovers from other runs. Some other things from
1855 this function should probably be moved into target_pre_inferior. */
1856 target_pre_inferior (from_tty
);
1858 /* Clear out solib state. Otherwise the solib state of the previous
1859 inferior might have survived and is entirely wrong for the new
1860 target. This has been observed on GNU/Linux using glibc 2.3. How
1872 Cannot access memory at address 0xdeadbeef
1880 target_attach (args
, from_tty
);
1882 /* Set up the "saved terminal modes" of the inferior
1883 based on what modes we are starting it with. */
1884 target_terminal_init ();
1886 /* Set up execution context to know that we should return from
1887 wait_for_inferior as soon as the target reports a stop. */
1888 init_wait_for_inferior ();
1889 clear_proceed_status ();
1891 /* No traps are generated when attaching to inferior under Mach 3
1893 #ifndef ATTACH_NO_WAIT
1894 /* Careful here. See comments in inferior.h. Basically some OSes
1895 don't ignore SIGSTOPs on continue requests anymore. We need a
1896 way for handle_inferior_event to reset the stop_signal variable
1897 after an attach, and this is what STOP_QUIETLY_NO_SIGSTOP is for. */
1898 stop_soon
= STOP_QUIETLY_NO_SIGSTOP
;
1899 wait_for_inferior ();
1900 stop_soon
= NO_STOP_QUIETLY
;
1904 * If no exec file is yet known, try to determine it from the
1907 exec_file
= (char *) get_exec_file (0);
1910 exec_file
= target_pid_to_exec_file (PIDGET (inferior_ptid
));
1913 /* It's possible we don't have a full path, but rather just a
1914 filename. Some targets, such as HP-UX, don't provide the
1917 Attempt to qualify the filename against the source path.
1918 (If that fails, we'll just fall back on the original
1919 filename. Not much more we can do...)
1921 if (!source_full_path_of (exec_file
, &full_exec_path
))
1922 full_exec_path
= savestring (exec_file
, strlen (exec_file
));
1924 exec_file_attach (full_exec_path
, from_tty
);
1925 symbol_file_add_main (full_exec_path
, from_tty
);
1930 reopen_exec_file ();
1934 /* Take any necessary post-attaching actions for this platform.
1936 target_post_attach (PIDGET (inferior_ptid
));
1938 post_create_inferior (¤t_target
, from_tty
);
1940 /* Install inferior's terminal modes. */
1941 target_terminal_inferior ();
1945 if (deprecated_attach_hook
)
1946 deprecated_attach_hook ();
1951 * takes a program previously attached to and detaches it.
1952 * The program resumes execution and will no longer stop
1953 * on signals, etc. We better not have left any breakpoints
1954 * in the program or it'll die when it hits one. For this
1955 * to work, it may be necessary for the process to have been
1956 * previously attached. It *might* work if the program was
1957 * started via the normal ptrace (PTRACE_TRACEME).
1961 detach_command (char *args
, int from_tty
)
1963 dont_repeat (); /* Not for the faint of heart. */
1964 target_detach (args
, from_tty
);
1965 #if defined(SOLIB_RESTART)
1968 if (deprecated_detach_hook
)
1969 deprecated_detach_hook ();
1972 /* Disconnect from the current target without resuming it (leaving it
1973 waiting for a debugger).
1975 We'd better not have left any breakpoints in the program or the
1976 next debugger will get confused. Currently only supported for some
1977 remote targets, since the normal attach mechanisms don't work on
1978 stopped processes on some native platforms (e.g. GNU/Linux). */
1981 disconnect_command (char *args
, int from_tty
)
1983 dont_repeat (); /* Not for the faint of heart */
1984 target_disconnect (args
, from_tty
);
1985 #if defined(SOLIB_RESTART)
1988 if (deprecated_detach_hook
)
1989 deprecated_detach_hook ();
1992 /* Stop the execution of the target while running in async mode, in
1995 interrupt_target_command (char *args
, int from_tty
)
1997 if (target_can_async_p ())
1999 dont_repeat (); /* Not for the faint of heart */
2005 print_float_info (struct gdbarch
*gdbarch
, struct ui_file
*file
,
2006 struct frame_info
*frame
, const char *args
)
2008 if (gdbarch_print_float_info_p (gdbarch
))
2009 gdbarch_print_float_info (gdbarch
, file
, frame
, args
);
2013 int printed_something
= 0;
2016 regnum
< gdbarch_num_regs (current_gdbarch
)
2017 + gdbarch_num_pseudo_regs (current_gdbarch
);
2020 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, float_reggroup
))
2022 printed_something
= 1;
2023 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
2026 if (!printed_something
)
2027 fprintf_filtered (file
, "\
2028 No floating-point info available for this processor.\n");
2033 float_info (char *args
, int from_tty
)
2035 if (!target_has_registers
)
2036 error (_("The program has no registers now."));
2038 print_float_info (current_gdbarch
, gdb_stdout
,
2039 get_selected_frame (NULL
), args
);
2043 unset_command (char *args
, int from_tty
)
2045 printf_filtered (_("\
2046 \"unset\" must be followed by the name of an unset subcommand.\n"));
2047 help_list (unsetlist
, "unset ", -1, gdb_stdout
);
2051 _initialize_infcmd (void)
2053 struct cmd_list_element
*c
= NULL
;
2055 /* add the filename of the terminal connected to inferior I/O */
2056 add_setshow_filename_cmd ("inferior-tty", class_run
,
2057 &inferior_io_terminal
, _("\
2058 Set terminal for future runs of program being debugged."), _("\
2059 Show terminal for future runs of program being debugged."), _("\
2060 Usage: set inferior-tty /dev/pts/1"), NULL
, NULL
, &setlist
, &showlist
);
2061 add_com_alias ("tty", "set inferior-tty", class_alias
, 0);
2063 add_setshow_optional_filename_cmd ("args", class_run
,
2064 &inferior_args
, _("\
2065 Set argument list to give program being debugged when it is started."), _("\
2066 Show argument list to give program being debugged when it is started."), _("\
2067 Follow this command with any number of args, to be passed to the program."),
2070 &setlist
, &showlist
);
2072 c
= add_cmd ("environment", no_class
, environment_info
, _("\
2073 The environment to give the program, or one variable's value.\n\
2074 With an argument VAR, prints the value of environment variable VAR to\n\
2075 give the program being debugged. With no arguments, prints the entire\n\
2076 environment to be given to the program."), &showlist
);
2077 set_cmd_completer (c
, noop_completer
);
2079 add_prefix_cmd ("unset", no_class
, unset_command
,
2080 _("Complement to certain \"set\" commands."),
2081 &unsetlist
, "unset ", 0, &cmdlist
);
2083 c
= add_cmd ("environment", class_run
, unset_environment_command
, _("\
2084 Cancel environment variable VAR for the program.\n\
2085 This does not affect the program until the next \"run\" command."),
2087 set_cmd_completer (c
, noop_completer
);
2089 c
= add_cmd ("environment", class_run
, set_environment_command
, _("\
2090 Set environment variable value to give the program.\n\
2091 Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\
2092 VALUES of environment variables are uninterpreted strings.\n\
2093 This does not affect the program until the next \"run\" command."),
2095 set_cmd_completer (c
, noop_completer
);
2097 c
= add_com ("path", class_files
, path_command
, _("\
2098 Add directory DIR(s) to beginning of search path for object files.\n\
2099 $cwd in the path means the current working directory.\n\
2100 This path is equivalent to the $PATH shell variable. It is a list of\n\
2101 directories, separated by colons. These directories are searched to find\n\
2102 fully linked executable files and separately compiled object files as needed."));
2103 set_cmd_completer (c
, filename_completer
);
2105 c
= add_cmd ("paths", no_class
, path_info
, _("\
2106 Current search path for finding object files.\n\
2107 $cwd in the path means the current working directory.\n\
2108 This path is equivalent to the $PATH shell variable. It is a list of\n\
2109 directories, separated by colons. These directories are searched to find\n\
2110 fully linked executable files and separately compiled object files as needed."),
2112 set_cmd_completer (c
, noop_completer
);
2114 add_com ("attach", class_run
, attach_command
, _("\
2115 Attach to a process or file outside of GDB.\n\
2116 This command attaches to another target, of the same type as your last\n\
2117 \"target\" command (\"info files\" will show your target stack).\n\
2118 The command may take as argument a process id or a device file.\n\
2119 For a process id, you must have permission to send the process a signal,\n\
2120 and it must have the same effective uid as the debugger.\n\
2121 When using \"attach\" with a process id, the debugger finds the\n\
2122 program running in the process, looking first in the current working\n\
2123 directory, or (if not found there) using the source file search path\n\
2124 (see the \"directory\" command). You can also use the \"file\" command\n\
2125 to specify the program, and to load its symbol table."));
2127 add_prefix_cmd ("detach", class_run
, detach_command
, _("\
2128 Detach a process or file previously attached.\n\
2129 If a process, it is no longer traced, and it continues its execution. If\n\
2130 you were debugging a file, the file is closed and gdb no longer accesses it."),
2131 &detachlist
, "detach ", 0, &cmdlist
);
2133 add_com ("disconnect", class_run
, disconnect_command
, _("\
2134 Disconnect from a target.\n\
2135 The target will wait for another debugger to connect. Not available for\n\
2138 add_com ("signal", class_run
, signal_command
, _("\
2139 Continue program giving it signal specified by the argument.\n\
2140 An argument of \"0\" means continue program without giving it a signal."));
2142 add_com ("stepi", class_run
, stepi_command
, _("\
2143 Step one instruction exactly.\n\
2144 Argument N means do this N times (or till program stops for another reason)."));
2145 add_com_alias ("si", "stepi", class_alias
, 0);
2147 add_com ("nexti", class_run
, nexti_command
, _("\
2148 Step one instruction, but proceed through subroutine calls.\n\
2149 Argument N means do this N times (or till program stops for another reason)."));
2150 add_com_alias ("ni", "nexti", class_alias
, 0);
2152 add_com ("finish", class_run
, finish_command
, _("\
2153 Execute until selected stack frame returns.\n\
2154 Upon return, the value returned is printed and put in the value history."));
2156 add_com ("next", class_run
, next_command
, _("\
2157 Step program, proceeding through subroutine calls.\n\
2158 Like the \"step\" command as long as subroutine calls do not happen;\n\
2159 when they do, the call is treated as one instruction.\n\
2160 Argument N means do this N times (or till program stops for another reason)."));
2161 add_com_alias ("n", "next", class_run
, 1);
2163 add_com_alias ("S", "next", class_run
, 1);
2165 add_com ("step", class_run
, step_command
, _("\
2166 Step program until it reaches a different source line.\n\
2167 Argument N means do this N times (or till program stops for another reason)."));
2168 add_com_alias ("s", "step", class_run
, 1);
2170 c
= add_com ("until", class_run
, until_command
, _("\
2171 Execute until the program reaches a source line greater than the current\n\
2172 or a specified location (same args as break command) within the current frame."));
2173 set_cmd_completer (c
, location_completer
);
2174 add_com_alias ("u", "until", class_run
, 1);
2176 c
= add_com ("advance", class_run
, advance_command
, _("\
2177 Continue the program up to the given location (same form as args for break command).\n\
2178 Execution will also stop upon exit from the current stack frame."));
2179 set_cmd_completer (c
, location_completer
);
2181 c
= add_com ("jump", class_run
, jump_command
, _("\
2182 Continue program being debugged at specified line or address.\n\
2183 Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\
2184 for an address to start at."));
2185 set_cmd_completer (c
, location_completer
);
2189 c
= add_com ("go", class_run
, go_command
, _("\
2190 Usage: go <location>\n\
2191 Continue program being debugged, stopping at specified line or \n\
2193 Give as argument either LINENUM or *ADDR, where ADDR is an \n\
2194 expression for an address to start at.\n\
2195 This command is a combination of tbreak and jump."));
2196 set_cmd_completer (c
, location_completer
);
2200 add_com_alias ("g", "go", class_run
, 1);
2202 add_com ("continue", class_run
, continue_command
, _("\
2203 Continue program being debugged, after signal or breakpoint.\n\
2204 If proceeding from breakpoint, a number N may be used as an argument,\n\
2205 which means to set the ignore count of that breakpoint to N - 1 (so that\n\
2206 the breakpoint won't break until the Nth time it is reached)."));
2207 add_com_alias ("c", "cont", class_run
, 1);
2208 add_com_alias ("fg", "cont", class_run
, 1);
2210 c
= add_com ("run", class_run
, run_command
, _("\
2211 Start debugged program. You may specify arguments to give it.\n\
2212 Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\
2213 Input and output redirection with \">\", \"<\", or \">>\" are also allowed.\n\n\
2214 With no arguments, uses arguments last specified (with \"run\" or \"set args\").\n\
2215 To cancel previous arguments and run with no arguments,\n\
2216 use \"set args\" without arguments."));
2217 set_cmd_completer (c
, filename_completer
);
2218 add_com_alias ("r", "run", class_run
, 1);
2220 add_com ("R", class_run
, run_no_args_command
,
2221 _("Start debugged program with no arguments."));
2223 c
= add_com ("start", class_run
, start_command
, _("\
2224 Run the debugged program until the beginning of the main procedure.\n\
2225 You may specify arguments to give to your program, just as with the\n\
2226 \"run\" command."));
2227 set_cmd_completer (c
, filename_completer
);
2229 add_com ("interrupt", class_run
, interrupt_target_command
,
2230 _("Interrupt the execution of the debugged program."));
2232 add_info ("registers", nofp_registers_info
, _("\
2233 List of integer registers and their contents, for selected stack frame.\n\
2234 Register name as argument means describe only that register."));
2235 add_info_alias ("r", "registers", 1);
2238 add_com ("lr", class_info
, nofp_registers_info
, _("\
2239 List of integer registers and their contents, for selected stack frame.\n\
2240 Register name as argument means describe only that register."));
2241 add_info ("all-registers", all_registers_info
, _("\
2242 List of all registers and their contents, for selected stack frame.\n\
2243 Register name as argument means describe only that register."));
2245 add_info ("program", program_info
,
2246 _("Execution status of the program."));
2248 add_info ("float", float_info
,
2249 _("Print the status of the floating point unit\n"));
2251 add_info ("vector", vector_info
,
2252 _("Print the status of the vector unit\n"));
2254 inferior_environ
= make_environ ();
2255 init_environ (inferior_environ
);