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 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"
50 #include "user-regs.h"
51 #include "exceptions.h"
52 #include "cli/cli-decode.h"
53 #include "gdbthread.h"
55 /* Functions exported for general use, in inferior.h: */
57 void all_registers_info (char *, int);
59 void registers_info (char *, int);
61 void nexti_command (char *, int);
63 void stepi_command (char *, int);
65 void continue_command (char *, int);
67 void interrupt_target_command (char *args
, int from_tty
);
69 /* Local functions: */
71 static void nofp_registers_info (char *, int);
73 static void print_return_value (struct type
*func_type
,
74 struct type
*value_type
);
76 static void finish_command_continuation (struct continuation_arg
*,
79 static void until_next_command (int);
81 static void until_command (char *, int);
83 static void path_info (char *, int);
85 static void path_command (char *, int);
87 static void unset_command (char *, int);
89 static void float_info (char *, int);
91 static void detach_command (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
);
111 static void step_1_continuation (struct continuation_arg
*arg
, int error_p
);
113 static void next_command (char *, int);
115 static void step_command (char *, int);
117 static void run_command (char *, int);
119 static void run_no_args_command (char *args
, int from_tty
);
121 static void go_command (char *line_no
, int from_tty
);
123 static int strip_bg_char (char **);
125 void _initialize_infcmd (void);
127 #define GO_USAGE "Usage: go <location>\n"
129 #define ERROR_NO_INFERIOR \
130 if (!target_has_execution) error (_("The program is not being run."));
132 /* String containing arguments to give to the program, separated by spaces.
133 Empty string (pointer to '\0') means no args. */
135 static char *inferior_args
;
137 /* The inferior arguments as a vector. If INFERIOR_ARGC is nonzero,
138 then we must compute INFERIOR_ARGS from this (via the target). */
140 static int inferior_argc
;
141 static char **inferior_argv
;
143 /* File name for default use for standard in/out in the inferior. */
145 static char *inferior_io_terminal
;
147 /* Pid of our debugged inferior, or 0 if no inferior now.
148 Since various parts of infrun.c test this to see whether there is a program
149 being debugged it should be nonzero (currently 3 is used) for remote
152 ptid_t inferior_ptid
;
154 /* Last signal that the inferior received (why it stopped). */
156 enum target_signal stop_signal
;
158 /* Address at which inferior stopped. */
162 /* Chain containing status of breakpoint(s) that we have stopped at. */
166 /* Flag indicating that a command has proceeded the inferior past the
167 current breakpoint. */
169 int breakpoint_proceeded
;
171 /* Nonzero if stopped due to a step command. */
175 /* Nonzero if stopped due to completion of a stack dummy routine. */
177 int stop_stack_dummy
;
179 /* Nonzero if stopped due to a random (unexpected) signal in inferior
182 int stopped_by_random_signal
;
184 /* Range to single step within.
185 If this is nonzero, respond to a single-step signal
186 by continuing to step if the pc is in this range. */
188 CORE_ADDR step_range_start
; /* Inclusive */
189 CORE_ADDR step_range_end
; /* Exclusive */
191 /* Stack frame address as of when stepping command was issued.
192 This is how we know when we step into a subroutine call,
193 and how to set the frame for the breakpoint used to step out. */
195 struct frame_id step_frame_id
;
197 enum step_over_calls_kind step_over_calls
;
199 /* If stepping, nonzero means step count is > 1
200 so don't print frame next time inferior stops
201 if it stops due to stepping. */
205 /* Environment to use for running inferior,
206 in format described in environ.h. */
208 struct gdb_environ
*inferior_environ
;
210 /* Accessor routines. */
213 set_inferior_io_terminal (const char *terminal_name
)
215 if (inferior_io_terminal
)
216 xfree (inferior_io_terminal
);
219 inferior_io_terminal
= NULL
;
221 inferior_io_terminal
= savestring (terminal_name
, strlen (terminal_name
));
225 get_inferior_io_terminal (void)
227 return inferior_io_terminal
;
231 get_inferior_args (void)
233 if (inferior_argc
!= 0)
237 n
= gdbarch_construct_inferior_arguments (current_gdbarch
,
238 inferior_argc
, inferior_argv
);
239 old
= set_inferior_args (n
);
243 if (inferior_args
== NULL
)
244 inferior_args
= xstrdup ("");
246 return inferior_args
;
250 set_inferior_args (char *newargs
)
252 char *saved_args
= inferior_args
;
254 inferior_args
= newargs
;
262 set_inferior_args_vector (int argc
, char **argv
)
264 inferior_argc
= argc
;
265 inferior_argv
= argv
;
268 /* Notice when `set args' is run. */
270 notice_args_set (char *args
, int from_tty
, struct cmd_list_element
*c
)
276 /* Notice when `show args' is run. */
278 notice_args_read (struct ui_file
*file
, int from_tty
,
279 struct cmd_list_element
*c
, const char *value
)
281 /* Note that we ignore the passed-in value in favor of computing it
283 deprecated_show_value_hack (file
, from_tty
, c
, get_inferior_args ());
287 /* Compute command-line string given argument vector. This does the
288 same shell processing as fork_inferior. */
290 construct_inferior_arguments (struct gdbarch
*gdbarch
, int argc
, char **argv
)
294 if (STARTUP_WITH_SHELL
)
296 /* This holds all the characters considered special to the
297 typical Unix shells. We include `^' because the SunOS
298 /bin/sh treats it as a synonym for `|'. */
299 char *special
= "\"!#$&*()\\|[]{}<>?'\"`~^; \t\n";
304 /* We over-compute the size. It shouldn't matter. */
305 for (i
= 0; i
< argc
; ++i
)
306 length
+= 2 * strlen (argv
[i
]) + 1 + 2 * (argv
[i
][0] == '\0');
308 result
= (char *) xmalloc (length
);
311 for (i
= 0; i
< argc
; ++i
)
316 /* Need to handle empty arguments specially. */
317 if (argv
[i
][0] == '\0')
324 for (cp
= argv
[i
]; *cp
; ++cp
)
326 if (strchr (special
, *cp
) != NULL
)
336 /* In this case we can't handle arguments that contain spaces,
337 tabs, or newlines -- see breakup_args(). */
341 for (i
= 0; i
< argc
; ++i
)
343 char *cp
= strchr (argv
[i
], ' ');
345 cp
= strchr (argv
[i
], '\t');
347 cp
= strchr (argv
[i
], '\n');
349 error (_("can't handle command-line argument containing whitespace"));
350 length
+= strlen (argv
[i
]) + 1;
353 result
= (char *) xmalloc (length
);
355 for (i
= 0; i
< argc
; ++i
)
358 strcat (result
, " ");
359 strcat (result
, argv
[i
]);
367 /* This function detects whether or not a '&' character (indicating
368 background execution) has been added as *the last* of the arguments ARGS
369 of a command. If it has, it removes it and returns 1. Otherwise it
370 does nothing and returns 0. */
372 strip_bg_char (char **args
)
376 p
= strchr (*args
, '&');
380 if (p
== (*args
+ strlen (*args
) - 1))
382 if (strlen (*args
) > 1)
386 while (*p
== ' ' || *p
== '\t');
398 tty_command (char *file
, int from_tty
)
401 error_no_arg (_("terminal name for running target process"));
403 set_inferior_io_terminal (file
);
406 /* Common actions to take after creating any sort of inferior, by any
407 means (running, attaching, connecting, et cetera). The target
408 should be stopped. */
411 post_create_inferior (struct target_ops
*target
, int from_tty
)
413 /* Be sure we own the terminal in case write operations are performed. */
414 target_terminal_ours ();
416 /* If the target hasn't taken care of this already, do it now.
417 Targets which need to access registers during to_open,
418 to_create_inferior, or to_attach should do it earlier; but many
420 target_find_description ();
424 /* Sometimes the platform-specific hook loads initial shared
425 libraries, and sometimes it doesn't. Try to do so first, so
426 that we can add them with the correct value for FROM_TTY.
427 If we made all the inferior hook methods consistent,
428 this call could be removed. */
430 SOLIB_ADD (NULL
, from_tty
, target
, auto_solib_add
);
432 solib_add (NULL
, from_tty
, target
, auto_solib_add
);
435 /* Create the hooks to handle shared library load and unload
437 #ifdef SOLIB_CREATE_INFERIOR_HOOK
438 SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid
));
440 solib_create_inferior_hook ();
444 observer_notify_inferior_created (target
, from_tty
);
447 /* Kill the inferior if already running. This function is designed
448 to be called when we are about to start the execution of the program
449 from the beginning. Ask the user to confirm that he wants to restart
450 the program being debugged when FROM_TTY is non-null. */
453 kill_if_already_running (int from_tty
)
455 if (! ptid_equal (inferior_ptid
, null_ptid
) && target_has_execution
)
457 /* Bail out before killing the program if we will not be able to
459 target_require_runnable ();
462 && !query ("The program being debugged has been started already.\n\
463 Start it from the beginning? "))
464 error (_("Program not restarted."));
466 no_shared_libraries (NULL
, from_tty
);
467 init_wait_for_inferior ();
471 /* Implement the "run" command. If TBREAK_AT_MAIN is set, then insert
472 a temporary breakpoint at the begining of the main program before
473 running the program. */
476 run_command_1 (char *args
, int from_tty
, int tbreak_at_main
)
482 kill_if_already_running (from_tty
);
483 clear_breakpoint_hit_counts ();
485 /* Clean up any leftovers from other runs. Some other things from
486 this function should probably be moved into target_pre_inferior. */
487 target_pre_inferior (from_tty
);
489 /* Purge old solib objfiles. */
490 objfile_purge_solibs ();
494 /* The comment here used to read, "The exec file is re-read every
495 time we do a generic_mourn_inferior, so we just have to worry
496 about the symbol file." The `generic_mourn_inferior' function
497 gets called whenever the program exits. However, suppose the
498 program exits, and *then* the executable file changes? We need
499 to check again here. Since reopen_exec_file doesn't do anything
500 if the timestamp hasn't changed, I don't see the harm. */
504 /* Insert the temporary breakpoint if a location was specified. */
506 tbreak_command (main_name (), 0);
508 exec_file
= (char *) get_exec_file (0);
510 /* We keep symbols from add-symbol-file, on the grounds that the
511 user might want to add some symbols before running the program
512 (right?). But sometimes (dynamic loading where the user manually
513 introduces the new symbols with add-symbol-file), the code which
514 the symbols describe does not persist between runs. Currently
515 the user has to manually nuke all symbols between runs if they
516 want them to go away (PR 2207). This is probably reasonable. */
520 if (target_can_async_p ())
521 async_disable_stdin ();
525 int async_exec
= strip_bg_char (&args
);
527 /* If we get a request for running in the bg but the target
528 doesn't support it, error out. */
529 if (async_exec
&& !target_can_async_p ())
530 error (_("Asynchronous execution not supported on this target."));
532 /* If we don't get a request of running in the bg, then we need
533 to simulate synchronous (fg) execution. */
534 if (!async_exec
&& target_can_async_p ())
536 /* Simulate synchronous execution */
537 async_disable_stdin ();
540 /* If there were other args, beside '&', process them. */
543 char *old_args
= set_inferior_args (xstrdup (args
));
550 ui_out_field_string (uiout
, NULL
, "Starting program");
551 ui_out_text (uiout
, ": ");
553 ui_out_field_string (uiout
, "execfile", exec_file
);
554 ui_out_spaces (uiout
, 1);
555 /* We call get_inferior_args() because we might need to compute
557 ui_out_field_string (uiout
, "infargs", get_inferior_args ());
558 ui_out_text (uiout
, "\n");
559 ui_out_flush (uiout
);
562 /* We call get_inferior_args() because we might need to compute
564 target_create_inferior (exec_file
, get_inferior_args (),
565 environ_vector (inferior_environ
), from_tty
);
567 /* Pass zero for FROM_TTY, because at this point the "run" command
568 has done its thing; now we are setting up the running program. */
569 post_create_inferior (¤t_target
, 0);
571 /* Start the target running. */
572 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_0
, 0);
577 run_command (char *args
, int from_tty
)
579 run_command_1 (args
, from_tty
, 0);
583 run_no_args_command (char *args
, int from_tty
)
585 char *old_args
= set_inferior_args (xstrdup (""));
590 /* Start the execution of the program up until the beginning of the main
594 start_command (char *args
, int from_tty
)
596 /* Some languages such as Ada need to search inside the program
597 minimal symbols for the location where to put the temporary
598 breakpoint before starting. */
599 if (!have_minimal_symbols ())
600 error (_("No symbol table loaded. Use the \"file\" command."));
602 /* Run the program until reaching the main procedure... */
603 run_command_1 (args
, from_tty
, 1);
607 continue_command (char *proc_count_exp
, int from_tty
)
612 /* Find out whether we must run in the background. */
613 if (proc_count_exp
!= NULL
)
614 async_exec
= strip_bg_char (&proc_count_exp
);
616 /* If we must run in the background, but the target can't do it,
618 if (async_exec
&& !target_can_async_p ())
619 error (_("Asynchronous execution not supported on this target."));
621 /* If we are not asked to run in the bg, then prepare to run in the
622 foreground, synchronously. */
623 if (!async_exec
&& target_can_async_p ())
625 /* Simulate synchronous execution */
626 async_disable_stdin ();
629 /* If have argument (besides '&'), set proceed count of breakpoint
631 if (proc_count_exp
!= NULL
)
633 bpstat bs
= stop_bpstat
;
637 while ((stat
= bpstat_num (&bs
, &num
)) != 0)
640 set_ignore_count (num
,
641 parse_and_eval_long (proc_count_exp
) - 1,
643 /* set_ignore_count prints a message ending with a period.
644 So print two spaces before "Continuing.". */
646 printf_filtered (" ");
650 if (!stopped
&& from_tty
)
653 ("Not stopped at any breakpoint; argument ignored.\n");
658 printf_filtered (_("Continuing.\n"));
660 clear_proceed_status ();
662 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
665 /* Step until outside of current statement. */
668 step_command (char *count_string
, int from_tty
)
670 step_1 (0, 0, count_string
);
673 /* Likewise, but skip over subroutine calls as if single instructions. */
676 next_command (char *count_string
, int from_tty
)
678 step_1 (1, 0, count_string
);
681 /* Likewise, but step only one instruction. */
684 stepi_command (char *count_string
, int from_tty
)
686 step_1 (0, 1, count_string
);
690 nexti_command (char *count_string
, int from_tty
)
692 step_1 (1, 1, count_string
);
696 disable_longjmp_breakpoint_cleanup (void *ignore
)
698 disable_longjmp_breakpoint ();
702 step_1 (int skip_subroutines
, int single_inst
, char *count_string
)
705 struct frame_info
*frame
;
706 struct cleanup
*cleanups
= make_cleanup (null_cleanup
, NULL
);
712 async_exec
= strip_bg_char (&count_string
);
714 /* If we get a request for running in the bg but the target
715 doesn't support it, error out. */
716 if (async_exec
&& !target_can_async_p ())
717 error (_("Asynchronous execution not supported on this target."));
719 /* If we don't get a request of running in the bg, then we need
720 to simulate synchronous (fg) execution. */
721 if (!async_exec
&& target_can_async_p ())
723 /* Simulate synchronous execution */
724 async_disable_stdin ();
727 count
= count_string
? parse_and_eval_long (count_string
) : 1;
729 if (!single_inst
|| skip_subroutines
) /* leave si command alone */
731 enable_longjmp_breakpoint ();
732 make_cleanup (disable_longjmp_breakpoint_cleanup
, 0 /*ignore*/);
735 /* In synchronous case, all is well, just use the regular for loop. */
736 if (!target_can_async_p ())
738 for (; count
> 0; count
--)
740 clear_proceed_status ();
742 frame
= get_current_frame ();
743 if (!frame
) /* Avoid coredump here. Why tho? */
744 error (_("No current frame"));
745 step_frame_id
= get_frame_id (frame
);
749 find_pc_line_pc_range (stop_pc
, &step_range_start
, &step_range_end
);
750 if (step_range_end
== 0)
753 if (find_pc_partial_function (stop_pc
, &name
, &step_range_start
,
754 &step_range_end
) == 0)
755 error (_("Cannot find bounds of current function"));
757 target_terminal_ours ();
758 printf_filtered (_("\
759 Single stepping until exit from function %s, \n\
760 which has no line number information.\n"), name
);
765 /* Say we are stepping, but stop after one insn whatever it does. */
766 step_range_start
= step_range_end
= 1;
767 if (!skip_subroutines
)
769 Don't step over function calls, not even to functions lacking
771 step_over_calls
= STEP_OVER_NONE
;
774 if (skip_subroutines
)
775 step_over_calls
= STEP_OVER_ALL
;
777 step_multi
= (count
> 1);
778 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
784 do_cleanups (cleanups
);
787 /* In case of asynchronous target things get complicated, do only
788 one step for now, before returning control to the event loop. Let
789 the continuation figure out how many other steps we need to do,
790 and handle them one at the time, through step_once(). */
793 step_once (skip_subroutines
, single_inst
, count
);
794 /* We are running, and the contination is installed. It will
795 disable the longjmp breakpoint as appropriate. */
796 discard_cleanups (cleanups
);
800 /* Called after we are done with one step operation, to check whether
801 we need to step again, before we print the prompt and return control
802 to the user. If count is > 1, we will need to do one more call to
803 proceed(), via step_once(). Basically it is like step_once and
804 step_1_continuation are co-recursive. */
806 step_1_continuation (struct continuation_arg
*arg
, int error_p
)
809 int skip_subroutines
;
812 skip_subroutines
= arg
->data
.integer
;
813 single_inst
= arg
->next
->data
.integer
;
814 count
= arg
->next
->next
->data
.integer
;
816 if (error_p
|| !step_multi
|| !stop_step
)
818 /* We either hit an error, or stopped for some reason
819 that is not stepping, or there are no further steps
821 if (!single_inst
|| skip_subroutines
)
822 disable_longjmp_breakpoint ();
826 step_once (skip_subroutines
, single_inst
, count
- 1);
829 /* Do just one step operation. If count >1 we will have to set up a
830 continuation to be done after the target stops (after this one
831 step). This is useful to implement the 'step n' kind of commands, in
832 case of asynchronous targets. We had to split step_1 into two parts,
833 one to be done before proceed() and one afterwards. This function is
834 called in case of step n with n>1, after the first step operation has
837 step_once (int skip_subroutines
, int single_inst
, int count
)
839 struct continuation_arg
*arg1
;
840 struct continuation_arg
*arg2
;
841 struct continuation_arg
*arg3
;
842 struct frame_info
*frame
;
846 clear_proceed_status ();
848 frame
= get_current_frame ();
849 if (!frame
) /* Avoid coredump here. Why tho? */
850 error (_("No current frame"));
851 step_frame_id
= get_frame_id (frame
);
855 find_pc_line_pc_range (stop_pc
, &step_range_start
, &step_range_end
);
857 /* If we have no line info, switch to stepi mode. */
858 if (step_range_end
== 0 && step_stop_if_no_debug
)
860 step_range_start
= step_range_end
= 1;
862 else if (step_range_end
== 0)
865 if (find_pc_partial_function (stop_pc
, &name
, &step_range_start
,
866 &step_range_end
) == 0)
867 error (_("Cannot find bounds of current function"));
869 target_terminal_ours ();
870 printf_filtered (_("\
871 Single stepping until exit from function %s, \n\
872 which has no line number information.\n"), name
);
877 /* Say we are stepping, but stop after one insn whatever it does. */
878 step_range_start
= step_range_end
= 1;
879 if (!skip_subroutines
)
881 Don't step over function calls, not even to functions lacking
883 step_over_calls
= STEP_OVER_NONE
;
886 if (skip_subroutines
)
887 step_over_calls
= STEP_OVER_ALL
;
889 step_multi
= (count
> 1);
890 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
892 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
894 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
896 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
898 arg1
->data
.integer
= skip_subroutines
;
900 arg2
->data
.integer
= single_inst
;
902 arg3
->data
.integer
= count
;
903 add_intermediate_continuation (step_1_continuation
, arg1
);
908 /* Continue program at specified address. */
911 jump_command (char *arg
, int from_tty
)
914 struct symtabs_and_lines sals
;
915 struct symtab_and_line sal
;
922 /* Find out whether we must run in the background. */
924 async_exec
= strip_bg_char (&arg
);
926 /* If we must run in the background, but the target can't do it,
928 if (async_exec
&& !target_can_async_p ())
929 error (_("Asynchronous execution not supported on this target."));
932 error_no_arg (_("starting address"));
934 sals
= decode_line_spec_1 (arg
, 1);
937 error (_("Unreasonable jump request"));
943 if (sal
.symtab
== 0 && sal
.pc
== 0)
944 error (_("No source file has been specified."));
946 resolve_sal_pc (&sal
); /* May error out */
948 /* See if we are trying to jump to another function. */
949 fn
= get_frame_function (get_current_frame ());
950 sfn
= find_pc_function (sal
.pc
);
951 if (fn
!= NULL
&& sfn
!= fn
)
953 if (!query ("Line %d is not in `%s'. Jump anyway? ", sal
.line
,
954 SYMBOL_PRINT_NAME (fn
)))
956 error (_("Not confirmed."));
963 fixup_symbol_section (sfn
, 0);
964 if (section_is_overlay (SYMBOL_BFD_SECTION (sfn
)) &&
965 !section_is_mapped (SYMBOL_BFD_SECTION (sfn
)))
967 if (!query ("WARNING!!! Destination is in unmapped overlay! Jump anyway? "))
969 error (_("Not confirmed."));
979 printf_filtered (_("Continuing at "));
980 fputs_filtered (paddress (addr
), gdb_stdout
);
981 printf_filtered (".\n");
984 /* If we are not asked to run in the bg, then prepare to run in the
985 foreground, synchronously. */
986 if (!async_exec
&& target_can_async_p ())
988 /* Simulate synchronous execution */
989 async_disable_stdin ();
992 clear_proceed_status ();
993 proceed (addr
, TARGET_SIGNAL_0
, 0);
997 /* Go to line or address in current procedure */
999 go_command (char *line_no
, int from_tty
)
1001 if (line_no
== (char *) NULL
|| !*line_no
)
1002 printf_filtered (GO_USAGE
);
1005 tbreak_command (line_no
, from_tty
);
1006 jump_command (line_no
, from_tty
);
1011 /* Continue program giving it specified signal. */
1014 signal_command (char *signum_exp
, int from_tty
)
1016 enum target_signal oursig
;
1019 dont_repeat (); /* Too dangerous. */
1022 /* Find out whether we must run in the background. */
1023 if (signum_exp
!= NULL
)
1024 async_exec
= strip_bg_char (&signum_exp
);
1026 /* If we must run in the background, but the target can't do it,
1028 if (async_exec
&& !target_can_async_p ())
1029 error (_("Asynchronous execution not supported on this target."));
1031 /* If we are not asked to run in the bg, then prepare to run in the
1032 foreground, synchronously. */
1033 if (!async_exec
&& target_can_async_p ())
1035 /* Simulate synchronous execution. */
1036 async_disable_stdin ();
1040 error_no_arg (_("signal number"));
1042 /* It would be even slicker to make signal names be valid expressions,
1043 (the type could be "enum $signal" or some such), then the user could
1044 assign them to convenience variables. */
1045 oursig
= target_signal_from_name (signum_exp
);
1047 if (oursig
== TARGET_SIGNAL_UNKNOWN
)
1049 /* No, try numeric. */
1050 int num
= parse_and_eval_long (signum_exp
);
1053 oursig
= TARGET_SIGNAL_0
;
1055 oursig
= target_signal_from_command (num
);
1060 if (oursig
== TARGET_SIGNAL_0
)
1061 printf_filtered (_("Continuing with no signal.\n"));
1063 printf_filtered (_("Continuing with signal %s.\n"),
1064 target_signal_to_name (oursig
));
1067 clear_proceed_status ();
1068 /* "signal 0" should not get stuck if we are stopped at a breakpoint.
1069 FIXME: Neither should "signal foo" but when I tried passing
1070 (CORE_ADDR)-1 unconditionally I got a testsuite failure which I haven't
1071 tried to track down yet. */
1072 proceed (oursig
== TARGET_SIGNAL_0
? (CORE_ADDR
) -1 : stop_pc
, oursig
, 0);
1075 /* Proceed until we reach a different source line with pc greater than
1076 our current one or exit the function. We skip calls in both cases.
1078 Note that eventually this command should probably be changed so
1079 that only source lines are printed out when we hit the breakpoint
1080 we set. This may involve changes to wait_for_inferior and the
1081 proceed status code. */
1084 until_next_command (int from_tty
)
1086 struct frame_info
*frame
;
1088 struct symbol
*func
;
1089 struct symtab_and_line sal
;
1091 clear_proceed_status ();
1093 frame
= get_current_frame ();
1095 /* Step until either exited from this function or greater
1096 than the current line (if in symbolic section) or pc (if
1100 func
= find_pc_function (pc
);
1104 struct minimal_symbol
*msymbol
= lookup_minimal_symbol_by_pc (pc
);
1106 if (msymbol
== NULL
)
1107 error (_("Execution is not within a known function."));
1109 step_range_start
= SYMBOL_VALUE_ADDRESS (msymbol
);
1110 step_range_end
= pc
;
1114 sal
= find_pc_line (pc
, 0);
1116 step_range_start
= BLOCK_START (SYMBOL_BLOCK_VALUE (func
));
1117 step_range_end
= sal
.end
;
1120 step_over_calls
= STEP_OVER_ALL
;
1121 step_frame_id
= get_frame_id (frame
);
1123 step_multi
= 0; /* Only one call to proceed */
1125 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
1129 until_command (char *arg
, int from_tty
)
1133 if (!target_has_execution
)
1134 error (_("The program is not running."));
1136 /* Find out whether we must run in the background. */
1138 async_exec
= strip_bg_char (&arg
);
1140 /* If we must run in the background, but the target can't do it,
1142 if (async_exec
&& !target_can_async_p ())
1143 error (_("Asynchronous execution not supported on this target."));
1145 /* If we are not asked to run in the bg, then prepare to run in the
1146 foreground, synchronously. */
1147 if (!async_exec
&& target_can_async_p ())
1149 /* Simulate synchronous execution */
1150 async_disable_stdin ();
1154 until_break_command (arg
, from_tty
, 0);
1156 until_next_command (from_tty
);
1160 advance_command (char *arg
, int from_tty
)
1164 if (!target_has_execution
)
1165 error (_("The program is not running."));
1168 error_no_arg (_("a location"));
1170 /* Find out whether we must run in the background. */
1172 async_exec
= strip_bg_char (&arg
);
1174 /* If we must run in the background, but the target can't do it,
1176 if (async_exec
&& !target_can_async_p ())
1177 error (_("Asynchronous execution not supported on this target."));
1179 /* If we are not asked to run in the bg, then prepare to run in the
1180 foreground, synchronously. */
1181 if (!async_exec
&& target_can_async_p ())
1183 /* Simulate synchronous execution. */
1184 async_disable_stdin ();
1187 until_break_command (arg
, from_tty
, 1);
1190 /* Print the result of a function at the end of a 'finish' command. */
1193 print_return_value (struct type
*func_type
, struct type
*value_type
)
1195 struct gdbarch
*gdbarch
= current_gdbarch
;
1196 struct cleanup
*old_chain
;
1197 struct ui_stream
*stb
;
1198 struct value
*value
;
1200 CHECK_TYPEDEF (value_type
);
1201 gdb_assert (TYPE_CODE (value_type
) != TYPE_CODE_VOID
);
1203 /* FIXME: 2003-09-27: When returning from a nested inferior function
1204 call, it's possible (with no help from the architecture vector)
1205 to locate and return/print a "struct return" value. This is just
1206 a more complicated case of what is already being done in in the
1207 inferior function call code. In fact, when inferior function
1208 calls are made async, this will likely be made the norm. */
1210 switch (gdbarch_return_value (gdbarch
, func_type
, value_type
,
1213 case RETURN_VALUE_REGISTER_CONVENTION
:
1214 case RETURN_VALUE_ABI_RETURNS_ADDRESS
:
1215 case RETURN_VALUE_ABI_PRESERVES_ADDRESS
:
1216 value
= allocate_value (value_type
);
1217 gdbarch_return_value (gdbarch
, func_type
, value_type
, stop_registers
,
1218 value_contents_raw (value
), NULL
);
1220 case RETURN_VALUE_STRUCT_CONVENTION
:
1224 internal_error (__FILE__
, __LINE__
, _("bad switch"));
1230 stb
= ui_out_stream_new (uiout
);
1231 old_chain
= make_cleanup_ui_out_stream_delete (stb
);
1232 ui_out_text (uiout
, "Value returned is ");
1233 ui_out_field_fmt (uiout
, "gdb-result-var", "$%d",
1234 record_latest_value (value
));
1235 ui_out_text (uiout
, " = ");
1236 value_print (value
, stb
->stream
, 0, Val_no_prettyprint
);
1237 ui_out_field_stream (uiout
, "return-value", stb
);
1238 ui_out_text (uiout
, "\n");
1239 do_cleanups (old_chain
);
1243 ui_out_text (uiout
, "Value returned has type: ");
1244 ui_out_field_string (uiout
, "return-type", TYPE_NAME (value_type
));
1245 ui_out_text (uiout
, ".");
1246 ui_out_text (uiout
, " Cannot determine contents\n");
1250 /* Stuff that needs to be done by the finish command after the target
1251 has stopped. In asynchronous mode, we wait for the target to stop
1252 in the call to poll or select in the event loop, so it is
1253 impossible to do all the stuff as part of the finish_command
1254 function itself. The only chance we have to complete this command
1255 is in fetch_inferior_event, which is called by the event loop as
1256 soon as it detects that the target has stopped. This function is
1257 called via the cmd_continuation pointer. */
1260 finish_command_continuation (struct continuation_arg
*arg
, int error_p
)
1262 struct symbol
*function
;
1263 struct breakpoint
*breakpoint
;
1264 struct cleanup
*cleanups
;
1266 breakpoint
= (struct breakpoint
*) arg
->data
.pointer
;
1267 function
= (struct symbol
*) arg
->next
->data
.pointer
;
1268 cleanups
= (struct cleanup
*) arg
->next
->next
->data
.pointer
;
1272 if (bpstat_find_breakpoint (stop_bpstat
, breakpoint
) != NULL
1273 && function
!= NULL
)
1275 struct type
*value_type
;
1277 value_type
= TYPE_TARGET_TYPE (SYMBOL_TYPE (function
));
1279 internal_error (__FILE__
, __LINE__
,
1280 _("finish_command: function has no target type"));
1282 if (TYPE_CODE (value_type
) != TYPE_CODE_VOID
)
1283 print_return_value (SYMBOL_TYPE (function
), value_type
);
1287 delete_breakpoint (breakpoint
);
1290 /* "finish": Set a temporary breakpoint at the place the selected
1291 frame will return to, then continue. */
1294 finish_command (char *arg
, int from_tty
)
1296 struct symtab_and_line sal
;
1297 struct frame_info
*frame
;
1298 struct symbol
*function
;
1299 struct breakpoint
*breakpoint
;
1300 struct cleanup
*old_chain
;
1301 struct continuation_arg
*arg1
, *arg2
, *arg3
;
1305 /* Find out whether we must run in the background. */
1307 async_exec
= strip_bg_char (&arg
);
1309 /* If we must run in the background, but the target can't do it,
1311 if (async_exec
&& !target_can_async_p ())
1312 error (_("Asynchronous execution not supported on this target."));
1314 /* If we are not asked to run in the bg, then prepare to run in the
1315 foreground, synchronously. */
1316 if (!async_exec
&& target_can_async_p ())
1318 /* Simulate synchronous execution. */
1319 async_disable_stdin ();
1323 error (_("The \"finish\" command does not take any arguments."));
1324 if (!target_has_execution
)
1325 error (_("The program is not running."));
1327 frame
= get_prev_frame (get_selected_frame (_("No selected frame.")));
1329 error (_("\"finish\" not meaningful in the outermost frame."));
1331 clear_proceed_status ();
1333 sal
= find_pc_line (get_frame_pc (frame
), 0);
1334 sal
.pc
= get_frame_pc (frame
);
1336 breakpoint
= set_momentary_breakpoint (sal
, get_frame_id (frame
), bp_finish
);
1338 old_chain
= make_cleanup_delete_breakpoint (breakpoint
);
1340 /* Find the function we will return from. */
1342 function
= find_pc_function (get_frame_pc (get_selected_frame (NULL
)));
1344 /* Print info on the selected frame, including level number but not
1348 printf_filtered (_("Run till exit from "));
1349 print_stack_frame (get_selected_frame (NULL
), 1, LOCATION
);
1352 proceed_to_finish
= 1; /* We want stop_registers, please... */
1353 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
1356 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
1358 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
1360 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
1364 arg1
->data
.pointer
= breakpoint
;
1365 arg2
->data
.pointer
= function
;
1366 arg3
->data
.pointer
= old_chain
;
1367 add_continuation (finish_command_continuation
, arg1
);
1369 /* Do this only if not running asynchronously or if the target
1370 cannot do async execution. Otherwise, complete this command when
1371 the target actually stops, in fetch_inferior_event. */
1372 discard_cleanups (old_chain
);
1373 if (!target_can_async_p ())
1374 do_all_continuations (0);
1379 program_info (char *args
, int from_tty
)
1381 bpstat bs
= stop_bpstat
;
1383 int stat
= bpstat_num (&bs
, &num
);
1385 if (!target_has_execution
)
1387 printf_filtered (_("The program being debugged is not being run.\n"));
1391 target_files_info ();
1392 printf_filtered (_("Program stopped at %s.\n"),
1393 hex_string ((unsigned long) stop_pc
));
1395 printf_filtered (_("It stopped after being stepped.\n"));
1398 /* There may be several breakpoints in the same place, so this
1399 isn't as strange as it seems. */
1404 printf_filtered (_("\
1405 It stopped at a breakpoint that has since been deleted.\n"));
1408 printf_filtered (_("It stopped at breakpoint %d.\n"), num
);
1409 stat
= bpstat_num (&bs
, &num
);
1412 else if (stop_signal
!= TARGET_SIGNAL_0
)
1414 printf_filtered (_("It stopped with signal %s, %s.\n"),
1415 target_signal_to_name (stop_signal
),
1416 target_signal_to_string (stop_signal
));
1421 printf_filtered (_("\
1422 Type \"info stack\" or \"info registers\" for more information.\n"));
1427 environment_info (char *var
, int from_tty
)
1431 char *val
= get_in_environ (inferior_environ
, var
);
1434 puts_filtered (var
);
1435 puts_filtered (" = ");
1436 puts_filtered (val
);
1437 puts_filtered ("\n");
1441 puts_filtered ("Environment variable \"");
1442 puts_filtered (var
);
1443 puts_filtered ("\" not defined.\n");
1448 char **vector
= environ_vector (inferior_environ
);
1451 puts_filtered (*vector
++);
1452 puts_filtered ("\n");
1458 set_environment_command (char *arg
, int from_tty
)
1460 char *p
, *val
, *var
;
1464 error_no_arg (_("environment variable and value"));
1466 /* Find seperation between variable name and value */
1467 p
= (char *) strchr (arg
, '=');
1468 val
= (char *) strchr (arg
, ' ');
1470 if (p
!= 0 && val
!= 0)
1472 /* We have both a space and an equals. If the space is before the
1473 equals, walk forward over the spaces til we see a nonspace
1474 (possibly the equals). */
1479 /* Now if the = is after the char following the spaces,
1480 take the char following the spaces. */
1484 else if (val
!= 0 && p
== 0)
1488 error_no_arg (_("environment variable to set"));
1490 if (p
== 0 || p
[1] == 0)
1494 p
= arg
+ strlen (arg
); /* So that savestring below will work */
1498 /* Not setting variable value to null */
1500 while (*val
== ' ' || *val
== '\t')
1504 while (p
!= arg
&& (p
[-1] == ' ' || p
[-1] == '\t'))
1507 var
= savestring (arg
, p
- arg
);
1510 printf_filtered (_("\
1511 Setting environment variable \"%s\" to null value.\n"),
1513 set_in_environ (inferior_environ
, var
, "");
1516 set_in_environ (inferior_environ
, var
, val
);
1521 unset_environment_command (char *var
, int from_tty
)
1525 /* If there is no argument, delete all environment variables.
1526 Ask for confirmation if reading from the terminal. */
1527 if (!from_tty
|| query (_("Delete all environment variables? ")))
1529 free_environ (inferior_environ
);
1530 inferior_environ
= make_environ ();
1534 unset_in_environ (inferior_environ
, var
);
1537 /* Handle the execution path (PATH variable) */
1539 static const char path_var_name
[] = "PATH";
1542 path_info (char *args
, int from_tty
)
1544 puts_filtered ("Executable and object file path: ");
1545 puts_filtered (get_in_environ (inferior_environ
, path_var_name
));
1546 puts_filtered ("\n");
1549 /* Add zero or more directories to the front of the execution path. */
1552 path_command (char *dirname
, int from_tty
)
1557 env
= get_in_environ (inferior_environ
, path_var_name
);
1558 /* Can be null if path is not set */
1561 exec_path
= xstrdup (env
);
1562 mod_path (dirname
, &exec_path
);
1563 set_in_environ (inferior_environ
, path_var_name
, exec_path
);
1566 path_info ((char *) NULL
, from_tty
);
1570 /* Print out the machine register regnum. If regnum is -1, print all
1571 registers (print_all == 1) or all non-float and non-vector
1572 registers (print_all == 0).
1574 For most machines, having all_registers_info() print the
1575 register(s) one per line is good enough. If a different format is
1576 required, (eg, for MIPS or Pyramid 90x, which both have lots of
1577 regs), or there is an existing convention for showing all the
1578 registers, define the architecture method PRINT_REGISTERS_INFO to
1579 provide that format. */
1582 default_print_registers_info (struct gdbarch
*gdbarch
,
1583 struct ui_file
*file
,
1584 struct frame_info
*frame
,
1585 int regnum
, int print_all
)
1588 const int numregs
= gdbarch_num_regs (gdbarch
)
1589 + gdbarch_num_pseudo_regs (gdbarch
);
1590 gdb_byte buffer
[MAX_REGISTER_SIZE
];
1592 for (i
= 0; i
< numregs
; i
++)
1594 /* Decide between printing all regs, non-float / vector regs, or
1600 if (!gdbarch_register_reggroup_p (gdbarch
, i
, all_reggroup
))
1605 if (!gdbarch_register_reggroup_p (gdbarch
, i
, general_reggroup
))
1615 /* If the register name is empty, it is undefined for this
1616 processor, so don't display anything. */
1617 if (gdbarch_register_name (gdbarch
, i
) == NULL
1618 || *(gdbarch_register_name (gdbarch
, i
)) == '\0')
1621 fputs_filtered (gdbarch_register_name (gdbarch
, i
), file
);
1622 print_spaces_filtered (15 - strlen (gdbarch_register_name
1623 (gdbarch
, i
)), file
);
1625 /* Get the data in raw format. */
1626 if (! frame_register_read (frame
, i
, buffer
))
1628 fprintf_filtered (file
, "*value not available*\n");
1632 /* If virtual format is floating, print it that way, and in raw
1634 if (TYPE_CODE (register_type (gdbarch
, i
)) == TYPE_CODE_FLT
1635 || TYPE_CODE (register_type (gdbarch
, i
)) == TYPE_CODE_DECFLOAT
)
1639 val_print (register_type (gdbarch
, i
), buffer
, 0, 0,
1640 file
, 0, 1, 0, Val_pretty_default
);
1642 fprintf_filtered (file
, "\t(raw 0x");
1643 for (j
= 0; j
< register_size (gdbarch
, i
); j
++)
1646 if (gdbarch_byte_order (gdbarch
) == BFD_ENDIAN_BIG
)
1649 idx
= register_size (gdbarch
, i
) - 1 - j
;
1650 fprintf_filtered (file
, "%02x", (unsigned char) buffer
[idx
]);
1652 fprintf_filtered (file
, ")");
1656 /* Print the register in hex. */
1657 val_print (register_type (gdbarch
, i
), buffer
, 0, 0,
1658 file
, 'x', 1, 0, Val_pretty_default
);
1659 /* If not a vector register, print it also according to its
1661 if (TYPE_VECTOR (register_type (gdbarch
, i
)) == 0)
1663 fprintf_filtered (file
, "\t");
1664 val_print (register_type (gdbarch
, i
), buffer
, 0, 0,
1665 file
, 0, 1, 0, Val_pretty_default
);
1669 fprintf_filtered (file
, "\n");
1674 registers_info (char *addr_exp
, int fpregs
)
1676 struct frame_info
*frame
;
1677 struct gdbarch
*gdbarch
;
1678 int regnum
, numregs
;
1681 if (!target_has_registers
)
1682 error (_("The program has no registers now."));
1683 frame
= get_selected_frame (NULL
);
1684 gdbarch
= get_frame_arch (frame
);
1688 gdbarch_print_registers_info (gdbarch
, gdb_stdout
,
1693 while (*addr_exp
!= '\0')
1698 /* Keep skipping leading white space. */
1699 if (isspace ((*addr_exp
)))
1705 /* Discard any leading ``$''. Check that there is something
1706 resembling a register following it. */
1707 if (addr_exp
[0] == '$')
1709 if (isspace ((*addr_exp
)) || (*addr_exp
) == '\0')
1710 error (_("Missing register name"));
1712 /* Find the start/end of this register name/num/group. */
1714 while ((*addr_exp
) != '\0' && !isspace ((*addr_exp
)))
1718 /* Figure out what we've found and display it. */
1720 /* A register name? */
1722 int regnum
= frame_map_name_to_regnum (frame
, start
, end
- start
);
1725 /* User registers lie completely outside of the range of
1726 normal registers. Catch them early so that the target
1728 if (regnum
>= gdbarch_num_regs (gdbarch
)
1729 + gdbarch_num_pseudo_regs (gdbarch
))
1731 struct value
*val
= value_of_user_reg (regnum
, frame
);
1733 printf_filtered ("%s: ", start
);
1734 print_scalar_formatted (value_contents (val
),
1735 check_typedef (value_type (val
)),
1736 'x', 0, gdb_stdout
);
1737 printf_filtered ("\n");
1740 gdbarch_print_registers_info (gdbarch
, gdb_stdout
,
1741 frame
, regnum
, fpregs
);
1746 /* A register number? (how portable is this one?). */
1749 int regnum
= strtol (start
, &endptr
, 0);
1752 && regnum
< gdbarch_num_regs (gdbarch
)
1753 + gdbarch_num_pseudo_regs (gdbarch
))
1755 gdbarch_print_registers_info (gdbarch
, gdb_stdout
,
1756 frame
, regnum
, fpregs
);
1761 /* A register group? */
1763 struct reggroup
*group
;
1764 for (group
= reggroup_next (gdbarch
, NULL
);
1766 group
= reggroup_next (gdbarch
, group
))
1768 /* Don't bother with a length check. Should the user
1769 enter a short register group name, go with the first
1770 group that matches. */
1771 if (strncmp (start
, reggroup_name (group
), end
- start
) == 0)
1778 regnum
< gdbarch_num_regs (gdbarch
)
1779 + gdbarch_num_pseudo_regs (gdbarch
);
1782 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, group
))
1783 gdbarch_print_registers_info (gdbarch
,
1791 /* Nothing matched. */
1792 error (_("Invalid register `%.*s'"), (int) (end
- start
), start
);
1797 all_registers_info (char *addr_exp
, int from_tty
)
1799 registers_info (addr_exp
, 1);
1803 nofp_registers_info (char *addr_exp
, int from_tty
)
1805 registers_info (addr_exp
, 0);
1809 print_vector_info (struct gdbarch
*gdbarch
, struct ui_file
*file
,
1810 struct frame_info
*frame
, const char *args
)
1812 if (gdbarch_print_vector_info_p (gdbarch
))
1813 gdbarch_print_vector_info (gdbarch
, file
, frame
, args
);
1817 int printed_something
= 0;
1820 regnum
< gdbarch_num_regs (gdbarch
)
1821 + gdbarch_num_pseudo_regs (gdbarch
);
1824 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, vector_reggroup
))
1826 printed_something
= 1;
1827 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
1830 if (!printed_something
)
1831 fprintf_filtered (file
, "No vector information\n");
1836 vector_info (char *args
, int from_tty
)
1838 if (!target_has_registers
)
1839 error (_("The program has no registers now."));
1841 print_vector_info (current_gdbarch
, gdb_stdout
,
1842 get_selected_frame (NULL
), args
);
1848 * Should save/restore the tty state since it might be that the
1849 * program to be debugged was started on this tty and it wants
1850 * the tty in some state other than what we want. If it's running
1851 * on another terminal or without a terminal, then saving and
1852 * restoring the tty state is a harmless no-op.
1853 * This only needs to be done if we are attaching to a process.
1858 takes a program started up outside of gdb and ``attaches'' to it.
1859 This stops it cold in its tracks and allows us to start debugging it.
1860 and wait for the trace-trap that results from attaching. */
1863 attach_command_post_wait (char *args
, int from_tty
, int async_exec
)
1866 char *full_exec_path
= NULL
;
1868 stop_soon
= NO_STOP_QUIETLY
;
1870 /* If no exec file is yet known, try to determine it from the
1872 exec_file
= (char *) get_exec_file (0);
1875 exec_file
= target_pid_to_exec_file (PIDGET (inferior_ptid
));
1878 /* It's possible we don't have a full path, but rather just a
1879 filename. Some targets, such as HP-UX, don't provide the
1882 Attempt to qualify the filename against the source path.
1883 (If that fails, we'll just fall back on the original
1884 filename. Not much more we can do...)
1886 if (!source_full_path_of (exec_file
, &full_exec_path
))
1887 full_exec_path
= savestring (exec_file
, strlen (exec_file
));
1889 exec_file_attach (full_exec_path
, from_tty
);
1890 symbol_file_add_main (full_exec_path
, from_tty
);
1895 reopen_exec_file ();
1899 /* Take any necessary post-attaching actions for this platform. */
1900 target_post_attach (PIDGET (inferior_ptid
));
1902 post_create_inferior (¤t_target
, from_tty
);
1904 /* Install inferior's terminal modes. */
1905 target_terminal_inferior ();
1908 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_0
, 0);
1911 if (target_can_async_p ())
1912 async_enable_stdin ();
1914 if (deprecated_attach_hook
)
1915 deprecated_attach_hook ();
1920 attach_command_continuation (struct continuation_arg
*arg
, int error_p
)
1926 args
= (char *) arg
->data
.pointer
;
1927 from_tty
= arg
->next
->data
.integer
;
1928 async_exec
= arg
->next
->next
->data
.integer
;
1930 attach_command_post_wait (args
, from_tty
, async_exec
);
1934 attach_command (char *args
, int from_tty
)
1937 char *full_exec_path
= NULL
;
1940 dont_repeat (); /* Not for the faint of heart */
1942 if (target_has_execution
)
1944 if (query ("A program is being debugged already. Kill it? "))
1947 error (_("Not killed."));
1950 /* Clean up any leftovers from other runs. Some other things from
1951 this function should probably be moved into target_pre_inferior. */
1952 target_pre_inferior (from_tty
);
1954 /* Clear out solib state. Otherwise the solib state of the previous
1955 inferior might have survived and is entirely wrong for the new
1956 target. This has been observed on GNU/Linux using glibc 2.3. How
1968 Cannot access memory at address 0xdeadbeef
1974 async_exec
= strip_bg_char (&args
);
1976 /* If we get a request for running in the bg but the target
1977 doesn't support it, error out. */
1978 if (async_exec
&& !target_can_async_p ())
1979 error (_("Asynchronous execution not supported on this target."));
1982 /* If we don't get a request of running in the bg, then we need
1983 to simulate synchronous (fg) execution. */
1984 if (!async_exec
&& target_can_async_p ())
1986 /* Simulate synchronous execution */
1987 async_disable_stdin ();
1990 target_attach (args
, from_tty
);
1992 /* Set up the "saved terminal modes" of the inferior
1993 based on what modes we are starting it with. */
1994 target_terminal_init ();
1996 /* Set up execution context to know that we should return from
1997 wait_for_inferior as soon as the target reports a stop. */
1998 init_wait_for_inferior ();
1999 clear_proceed_status ();
2001 /* No traps are generated when attaching to inferior under Mach 3
2003 #ifndef ATTACH_NO_WAIT
2004 /* Careful here. See comments in inferior.h. Basically some OSes
2005 don't ignore SIGSTOPs on continue requests anymore. We need a
2006 way for handle_inferior_event to reset the stop_signal variable
2007 after an attach, and this is what STOP_QUIETLY_NO_SIGSTOP is for. */
2008 stop_soon
= STOP_QUIETLY_NO_SIGSTOP
;
2010 if (target_can_async_p ())
2012 /* sync_execution mode. Wait for stop. */
2013 struct continuation_arg
*arg1
, *arg2
, *arg3
;
2016 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
2018 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
2020 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
2024 arg1
->data
.pointer
= args
;
2025 arg2
->data
.integer
= from_tty
;
2026 arg3
->data
.integer
= async_exec
;
2027 add_continuation (attach_command_continuation
, arg1
);
2031 wait_for_inferior (0);
2034 attach_command_post_wait (args
, from_tty
, async_exec
);
2039 * takes a program previously attached to and detaches it.
2040 * The program resumes execution and will no longer stop
2041 * on signals, etc. We better not have left any breakpoints
2042 * in the program or it'll die when it hits one. For this
2043 * to work, it may be necessary for the process to have been
2044 * previously attached. It *might* work if the program was
2045 * started via the normal ptrace (PTRACE_TRACEME).
2049 detach_command (char *args
, int from_tty
)
2051 dont_repeat (); /* Not for the faint of heart. */
2052 target_detach (args
, from_tty
);
2053 no_shared_libraries (NULL
, from_tty
);
2054 init_thread_list ();
2055 if (deprecated_detach_hook
)
2056 deprecated_detach_hook ();
2059 /* Disconnect from the current target without resuming it (leaving it
2060 waiting for a debugger).
2062 We'd better not have left any breakpoints in the program or the
2063 next debugger will get confused. Currently only supported for some
2064 remote targets, since the normal attach mechanisms don't work on
2065 stopped processes on some native platforms (e.g. GNU/Linux). */
2068 disconnect_command (char *args
, int from_tty
)
2070 dont_repeat (); /* Not for the faint of heart */
2071 target_disconnect (args
, from_tty
);
2072 no_shared_libraries (NULL
, from_tty
);
2073 init_thread_list ();
2074 if (deprecated_detach_hook
)
2075 deprecated_detach_hook ();
2078 /* Stop the execution of the target while running in async mode, in
2081 interrupt_target_command (char *args
, int from_tty
)
2083 if (target_can_async_p ())
2085 dont_repeat (); /* Not for the faint of heart */
2091 print_float_info (struct gdbarch
*gdbarch
, struct ui_file
*file
,
2092 struct frame_info
*frame
, const char *args
)
2094 if (gdbarch_print_float_info_p (gdbarch
))
2095 gdbarch_print_float_info (gdbarch
, file
, frame
, args
);
2099 int printed_something
= 0;
2102 regnum
< gdbarch_num_regs (gdbarch
)
2103 + gdbarch_num_pseudo_regs (gdbarch
);
2106 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, float_reggroup
))
2108 printed_something
= 1;
2109 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
2112 if (!printed_something
)
2113 fprintf_filtered (file
, "\
2114 No floating-point info available for this processor.\n");
2119 float_info (char *args
, int from_tty
)
2121 if (!target_has_registers
)
2122 error (_("The program has no registers now."));
2124 print_float_info (current_gdbarch
, gdb_stdout
,
2125 get_selected_frame (NULL
), args
);
2129 unset_command (char *args
, int from_tty
)
2131 printf_filtered (_("\
2132 \"unset\" must be followed by the name of an unset subcommand.\n"));
2133 help_list (unsetlist
, "unset ", -1, gdb_stdout
);
2137 _initialize_infcmd (void)
2139 struct cmd_list_element
*c
= NULL
;
2141 /* add the filename of the terminal connected to inferior I/O */
2142 add_setshow_filename_cmd ("inferior-tty", class_run
,
2143 &inferior_io_terminal
, _("\
2144 Set terminal for future runs of program being debugged."), _("\
2145 Show terminal for future runs of program being debugged."), _("\
2146 Usage: set inferior-tty /dev/pts/1"), NULL
, NULL
, &setlist
, &showlist
);
2147 add_com_alias ("tty", "set inferior-tty", class_alias
, 0);
2149 add_setshow_optional_filename_cmd ("args", class_run
,
2150 &inferior_args
, _("\
2151 Set argument list to give program being debugged when it is started."), _("\
2152 Show argument list to give program being debugged when it is started."), _("\
2153 Follow this command with any number of args, to be passed to the program."),
2156 &setlist
, &showlist
);
2158 c
= add_cmd ("environment", no_class
, environment_info
, _("\
2159 The environment to give the program, or one variable's value.\n\
2160 With an argument VAR, prints the value of environment variable VAR to\n\
2161 give the program being debugged. With no arguments, prints the entire\n\
2162 environment to be given to the program."), &showlist
);
2163 set_cmd_completer (c
, noop_completer
);
2165 add_prefix_cmd ("unset", no_class
, unset_command
,
2166 _("Complement to certain \"set\" commands."),
2167 &unsetlist
, "unset ", 0, &cmdlist
);
2169 c
= add_cmd ("environment", class_run
, unset_environment_command
, _("\
2170 Cancel environment variable VAR for the program.\n\
2171 This does not affect the program until the next \"run\" command."),
2173 set_cmd_completer (c
, noop_completer
);
2175 c
= add_cmd ("environment", class_run
, set_environment_command
, _("\
2176 Set environment variable value to give the program.\n\
2177 Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\
2178 VALUES of environment variables are uninterpreted strings.\n\
2179 This does not affect the program until the next \"run\" command."),
2181 set_cmd_completer (c
, noop_completer
);
2183 c
= add_com ("path", class_files
, path_command
, _("\
2184 Add directory DIR(s) to beginning of search path for object files.\n\
2185 $cwd in the path means the current working directory.\n\
2186 This path is equivalent to the $PATH shell variable. It is a list of\n\
2187 directories, separated by colons. These directories are searched to find\n\
2188 fully linked executable files and separately compiled object files as needed."));
2189 set_cmd_completer (c
, filename_completer
);
2191 c
= add_cmd ("paths", no_class
, path_info
, _("\
2192 Current search path for finding object files.\n\
2193 $cwd in the path means the current working directory.\n\
2194 This path is equivalent to the $PATH shell variable. It is a list of\n\
2195 directories, separated by colons. These directories are searched to find\n\
2196 fully linked executable files and separately compiled object files as needed."),
2198 set_cmd_completer (c
, noop_completer
);
2200 add_com ("attach", class_run
, attach_command
, _("\
2201 Attach to a process or file outside of GDB.\n\
2202 This command attaches to another target, of the same type as your last\n\
2203 \"target\" command (\"info files\" will show your target stack).\n\
2204 The command may take as argument a process id or a device file.\n\
2205 For a process id, you must have permission to send the process a signal,\n\
2206 and it must have the same effective uid as the debugger.\n\
2207 When using \"attach\" with a process id, the debugger finds the\n\
2208 program running in the process, looking first in the current working\n\
2209 directory, or (if not found there) using the source file search path\n\
2210 (see the \"directory\" command). You can also use the \"file\" command\n\
2211 to specify the program, and to load its symbol table."));
2213 add_prefix_cmd ("detach", class_run
, detach_command
, _("\
2214 Detach a process or file previously attached.\n\
2215 If a process, it is no longer traced, and it continues its execution. If\n\
2216 you were debugging a file, the file is closed and gdb no longer accesses it."),
2217 &detachlist
, "detach ", 0, &cmdlist
);
2219 add_com ("disconnect", class_run
, disconnect_command
, _("\
2220 Disconnect from a target.\n\
2221 The target will wait for another debugger to connect. Not available for\n\
2224 add_com ("signal", class_run
, signal_command
, _("\
2225 Continue program giving it signal specified by the argument.\n\
2226 An argument of \"0\" means continue program without giving it a signal."));
2228 add_com ("stepi", class_run
, stepi_command
, _("\
2229 Step one instruction exactly.\n\
2230 Argument N means do this N times (or till program stops for another reason)."));
2231 add_com_alias ("si", "stepi", class_alias
, 0);
2233 add_com ("nexti", class_run
, nexti_command
, _("\
2234 Step one instruction, but proceed through subroutine calls.\n\
2235 Argument N means do this N times (or till program stops for another reason)."));
2236 add_com_alias ("ni", "nexti", class_alias
, 0);
2238 add_com ("finish", class_run
, finish_command
, _("\
2239 Execute until selected stack frame returns.\n\
2240 Upon return, the value returned is printed and put in the value history."));
2242 add_com ("next", class_run
, next_command
, _("\
2243 Step program, proceeding through subroutine calls.\n\
2244 Like the \"step\" command as long as subroutine calls do not happen;\n\
2245 when they do, the call is treated as one instruction.\n\
2246 Argument N means do this N times (or till program stops for another reason)."));
2247 add_com_alias ("n", "next", class_run
, 1);
2249 add_com_alias ("S", "next", class_run
, 1);
2251 add_com ("step", class_run
, step_command
, _("\
2252 Step program until it reaches a different source line.\n\
2253 Argument N means do this N times (or till program stops for another reason)."));
2254 add_com_alias ("s", "step", class_run
, 1);
2256 c
= add_com ("until", class_run
, until_command
, _("\
2257 Execute until the program reaches a source line greater than the current\n\
2258 or a specified location (same args as break command) within the current frame."));
2259 set_cmd_completer (c
, location_completer
);
2260 add_com_alias ("u", "until", class_run
, 1);
2262 c
= add_com ("advance", class_run
, advance_command
, _("\
2263 Continue the program up to the given location (same form as args for break command).\n\
2264 Execution will also stop upon exit from the current stack frame."));
2265 set_cmd_completer (c
, location_completer
);
2267 c
= add_com ("jump", class_run
, jump_command
, _("\
2268 Continue program being debugged at specified line or address.\n\
2269 Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\
2270 for an address to start at."));
2271 set_cmd_completer (c
, location_completer
);
2275 c
= add_com ("go", class_run
, go_command
, _("\
2276 Usage: go <location>\n\
2277 Continue program being debugged, stopping at specified line or \n\
2279 Give as argument either LINENUM or *ADDR, where ADDR is an \n\
2280 expression for an address to start at.\n\
2281 This command is a combination of tbreak and jump."));
2282 set_cmd_completer (c
, location_completer
);
2286 add_com_alias ("g", "go", class_run
, 1);
2288 add_com ("continue", class_run
, continue_command
, _("\
2289 Continue program being debugged, after signal or breakpoint.\n\
2290 If proceeding from breakpoint, a number N may be used as an argument,\n\
2291 which means to set the ignore count of that breakpoint to N - 1 (so that\n\
2292 the breakpoint won't break until the Nth time it is reached)."));
2293 add_com_alias ("c", "cont", class_run
, 1);
2294 add_com_alias ("fg", "cont", class_run
, 1);
2296 c
= add_com ("run", class_run
, run_command
, _("\
2297 Start debugged program. You may specify arguments to give it.\n\
2298 Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\
2299 Input and output redirection with \">\", \"<\", or \">>\" are also allowed.\n\n\
2300 With no arguments, uses arguments last specified (with \"run\" or \"set args\").\n\
2301 To cancel previous arguments and run with no arguments,\n\
2302 use \"set args\" without arguments."));
2303 set_cmd_completer (c
, filename_completer
);
2304 add_com_alias ("r", "run", class_run
, 1);
2306 add_com ("R", class_run
, run_no_args_command
,
2307 _("Start debugged program with no arguments."));
2309 c
= add_com ("start", class_run
, start_command
, _("\
2310 Run the debugged program until the beginning of the main procedure.\n\
2311 You may specify arguments to give to your program, just as with the\n\
2312 \"run\" command."));
2313 set_cmd_completer (c
, filename_completer
);
2315 c
= add_com ("interrupt", class_run
, interrupt_target_command
,
2316 _("Interrupt the execution of the debugged program."));
2317 set_cmd_async_ok (c
);
2319 add_info ("registers", nofp_registers_info
, _("\
2320 List of integer registers and their contents, for selected stack frame.\n\
2321 Register name as argument means describe only that register."));
2322 add_info_alias ("r", "registers", 1);
2325 add_com ("lr", class_info
, nofp_registers_info
, _("\
2326 List of integer registers and their contents, for selected stack frame.\n\
2327 Register name as argument means describe only that register."));
2328 add_info ("all-registers", all_registers_info
, _("\
2329 List of all registers and their contents, for selected stack frame.\n\
2330 Register name as argument means describe only that register."));
2332 add_info ("program", program_info
,
2333 _("Execution status of the program."));
2335 add_info ("float", float_info
,
2336 _("Print the status of the floating point unit\n"));
2338 add_info ("vector", vector_info
,
2339 _("Print the status of the vector unit\n"));
2341 inferior_environ
= make_environ ();
2342 init_environ (inferior_environ
);