1 /* Memory-access and commands for "inferior" process, for GDB.
2 Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
3 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
4 Free Software Foundation, Inc.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA. */
25 #include "gdb_string.h"
39 #include "completer.h"
41 #include "event-top.h"
42 #include "parser-defs.h"
44 #include "reggroups.h"
47 #include "gdb_assert.h"
49 /* Functions exported for general use, in inferior.h: */
51 void all_registers_info (char *, int);
53 void registers_info (char *, int);
55 void nexti_command (char *, int);
57 void stepi_command (char *, int);
59 void continue_command (char *, int);
61 void interrupt_target_command (char *args
, int from_tty
);
63 /* Local functions: */
65 static void nofp_registers_info (char *, int);
67 static void print_return_value (int struct_return
, struct type
*value_type
);
69 static void finish_command_continuation (struct continuation_arg
*);
71 static void until_next_command (int);
73 static void until_command (char *, int);
75 static void path_info (char *, int);
77 static void path_command (char *, int);
79 static void unset_command (char *, int);
81 static void float_info (char *, int);
83 static void detach_command (char *, int);
85 static void disconnect_command (char *, int);
87 static void unset_environment_command (char *, int);
89 static void set_environment_command (char *, int);
91 static void environment_info (char *, int);
93 static void program_info (char *, int);
95 static void finish_command (char *, int);
97 static void signal_command (char *, int);
99 static void jump_command (char *, int);
101 static void step_1 (int, int, char *);
102 static void step_once (int skip_subroutines
, int single_inst
, int count
);
103 static void step_1_continuation (struct continuation_arg
*arg
);
105 static void next_command (char *, int);
107 static void step_command (char *, int);
109 static void run_command (char *, int);
111 static void run_no_args_command (char *args
, int from_tty
);
113 static void go_command (char *line_no
, int from_tty
);
115 static int strip_bg_char (char **);
117 void _initialize_infcmd (void);
119 #define GO_USAGE "Usage: go <location>\n"
121 #define ERROR_NO_INFERIOR \
122 if (!target_has_execution) error ("The program is not being run.");
124 /* String containing arguments to give to the program, separated by spaces.
125 Empty string (pointer to '\0') means no args. */
127 static char *inferior_args
;
129 /* The inferior arguments as a vector. If INFERIOR_ARGC is nonzero,
130 then we must compute INFERIOR_ARGS from this (via the target). */
132 static int inferior_argc
;
133 static char **inferior_argv
;
135 /* File name for default use for standard in/out in the inferior. */
137 char *inferior_io_terminal
;
139 /* Pid of our debugged inferior, or 0 if no inferior now.
140 Since various parts of infrun.c test this to see whether there is a program
141 being debugged it should be nonzero (currently 3 is used) for remote
144 ptid_t inferior_ptid
;
146 /* Last signal that the inferior received (why it stopped). */
148 enum target_signal stop_signal
;
150 /* Address at which inferior stopped. */
154 /* Chain containing status of breakpoint(s) that we have stopped at. */
158 /* Flag indicating that a command has proceeded the inferior past the
159 current breakpoint. */
161 int breakpoint_proceeded
;
163 /* Nonzero if stopped due to a step command. */
167 /* Nonzero if stopped due to completion of a stack dummy routine. */
169 int stop_stack_dummy
;
171 /* Nonzero if stopped due to a random (unexpected) signal in inferior
174 int stopped_by_random_signal
;
176 /* Range to single step within.
177 If this is nonzero, respond to a single-step signal
178 by continuing to step if the pc is in this range. */
180 CORE_ADDR step_range_start
; /* Inclusive */
181 CORE_ADDR step_range_end
; /* Exclusive */
183 /* Stack frame address as of when stepping command was issued.
184 This is how we know when we step into a subroutine call,
185 and how to set the frame for the breakpoint used to step out. */
187 struct frame_id step_frame_id
;
189 /* Our notion of the current stack pointer. */
193 enum step_over_calls_kind step_over_calls
;
195 /* If stepping, nonzero means step count is > 1
196 so don't print frame next time inferior stops
197 if it stops due to stepping. */
201 /* Environment to use for running inferior,
202 in format described in environ.h. */
204 struct environ
*inferior_environ
;
206 /* Accessor routines. */
209 get_inferior_args (void)
211 if (inferior_argc
!= 0)
215 n
= gdbarch_construct_inferior_arguments (current_gdbarch
,
216 inferior_argc
, inferior_argv
);
217 old
= set_inferior_args (n
);
221 if (inferior_args
== NULL
)
222 inferior_args
= xstrdup ("");
224 return inferior_args
;
228 set_inferior_args (char *newargs
)
230 char *saved_args
= inferior_args
;
232 inferior_args
= newargs
;
240 set_inferior_args_vector (int argc
, char **argv
)
242 inferior_argc
= argc
;
243 inferior_argv
= argv
;
246 /* Notice when `set args' is run. */
248 notice_args_set (char *args
, int from_tty
, struct cmd_list_element
*c
)
254 /* Notice when `show args' is run. */
256 notice_args_read (char *args
, int from_tty
, struct cmd_list_element
*c
)
258 /* Might compute the value. */
259 get_inferior_args ();
263 /* Compute command-line string given argument vector. This does the
264 same shell processing as fork_inferior. */
266 construct_inferior_arguments (struct gdbarch
*gdbarch
, int argc
, char **argv
)
270 if (STARTUP_WITH_SHELL
)
272 /* This holds all the characters considered special to the
273 typical Unix shells. We include `^' because the SunOS
274 /bin/sh treats it as a synonym for `|'. */
275 char *special
= "\"!#$&*()\\|[]{}<>?'\"`~^; \t\n";
280 /* We over-compute the size. It shouldn't matter. */
281 for (i
= 0; i
< argc
; ++i
)
282 length
+= 2 * strlen (argv
[i
]) + 1 + 2 * (argv
[i
][0] == '\0');
284 result
= (char *) xmalloc (length
);
287 for (i
= 0; i
< argc
; ++i
)
292 /* Need to handle empty arguments specially. */
293 if (argv
[i
][0] == '\0')
300 for (cp
= argv
[i
]; *cp
; ++cp
)
302 if (strchr (special
, *cp
) != NULL
)
312 /* In this case we can't handle arguments that contain spaces,
313 tabs, or newlines -- see breakup_args(). */
317 for (i
= 0; i
< argc
; ++i
)
319 char *cp
= strchr (argv
[i
], ' ');
321 cp
= strchr (argv
[i
], '\t');
323 cp
= strchr (argv
[i
], '\n');
325 error ("can't handle command-line argument containing whitespace");
326 length
+= strlen (argv
[i
]) + 1;
329 result
= (char *) xmalloc (length
);
331 for (i
= 0; i
< argc
; ++i
)
334 strcat (result
, " ");
335 strcat (result
, argv
[i
]);
343 /* This function detects whether or not a '&' character (indicating
344 background execution) has been added as *the last* of the arguments ARGS
345 of a command. If it has, it removes it and returns 1. Otherwise it
346 does nothing and returns 0. */
348 strip_bg_char (char **args
)
352 p
= strchr (*args
, '&');
356 if (p
== (*args
+ strlen (*args
) - 1))
358 if (strlen (*args
) > 1)
362 while (*p
== ' ' || *p
== '\t');
374 tty_command (char *file
, int from_tty
)
377 error_no_arg ("terminal name for running target process");
379 inferior_io_terminal
= savestring (file
, strlen (file
));
383 run_command (char *args
, int from_tty
)
389 if (! ptid_equal (inferior_ptid
, null_ptid
) && target_has_execution
)
392 && !query ("The program being debugged has been started already.\n\
393 Start it from the beginning? "))
394 error ("Program not restarted.");
396 #if defined(SOLIB_RESTART)
399 init_wait_for_inferior ();
402 clear_breakpoint_hit_counts ();
404 /* Purge old solib objfiles. */
405 objfile_purge_solibs ();
407 do_run_cleanups (NULL
);
409 /* The comment here used to read, "The exec file is re-read every
410 time we do a generic_mourn_inferior, so we just have to worry
411 about the symbol file." The `generic_mourn_inferior' function
412 gets called whenever the program exits. However, suppose the
413 program exits, and *then* the executable file changes? We need
414 to check again here. Since reopen_exec_file doesn't do anything
415 if the timestamp hasn't changed, I don't see the harm. */
419 exec_file
= (char *) get_exec_file (0);
421 /* We keep symbols from add-symbol-file, on the grounds that the
422 user might want to add some symbols before running the program
423 (right?). But sometimes (dynamic loading where the user manually
424 introduces the new symbols with add-symbol-file), the code which
425 the symbols describe does not persist between runs. Currently
426 the user has to manually nuke all symbols between runs if they
427 want them to go away (PR 2207). This is probably reasonable. */
431 if (event_loop_p
&& target_can_async_p ())
432 async_disable_stdin ();
436 int async_exec
= strip_bg_char (&args
);
438 /* If we get a request for running in the bg but the target
439 doesn't support it, error out. */
440 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
441 error ("Asynchronous execution not supported on this target.");
443 /* If we don't get a request of running in the bg, then we need
444 to simulate synchronous (fg) execution. */
445 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
447 /* Simulate synchronous execution */
448 async_disable_stdin ();
451 /* If there were other args, beside '&', process them. */
454 char *old_args
= set_inferior_args (xstrdup (args
));
461 ui_out_field_string (uiout
, NULL
, "Starting program");
462 ui_out_text (uiout
, ": ");
464 ui_out_field_string (uiout
, "execfile", exec_file
);
465 ui_out_spaces (uiout
, 1);
466 /* We call get_inferior_args() because we might need to compute
468 ui_out_field_string (uiout
, "infargs", get_inferior_args ());
469 ui_out_text (uiout
, "\n");
470 ui_out_flush (uiout
);
473 /* We call get_inferior_args() because we might need to compute
475 target_create_inferior (exec_file
, get_inferior_args (),
476 environ_vector (inferior_environ
));
481 run_no_args_command (char *args
, int from_tty
)
483 char *old_args
= set_inferior_args (xstrdup (""));
489 continue_command (char *proc_count_exp
, int from_tty
)
494 /* Find out whether we must run in the background. */
495 if (proc_count_exp
!= NULL
)
496 async_exec
= strip_bg_char (&proc_count_exp
);
498 /* If we must run in the background, but the target can't do it,
500 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
501 error ("Asynchronous execution not supported on this target.");
503 /* If we are not asked to run in the bg, then prepare to run in the
504 foreground, synchronously. */
505 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
507 /* Simulate synchronous execution */
508 async_disable_stdin ();
511 /* If have argument (besides '&'), set proceed count of breakpoint
513 if (proc_count_exp
!= NULL
)
515 bpstat bs
= stop_bpstat
;
516 int num
= bpstat_num (&bs
);
517 if (num
== 0 && from_tty
)
520 ("Not stopped at any breakpoint; argument ignored.\n");
524 set_ignore_count (num
,
525 parse_and_eval_long (proc_count_exp
) - 1,
527 /* set_ignore_count prints a message ending with a period.
528 So print two spaces before "Continuing.". */
530 printf_filtered (" ");
531 num
= bpstat_num (&bs
);
536 printf_filtered ("Continuing.\n");
538 clear_proceed_status ();
540 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
543 /* Step until outside of current statement. */
546 step_command (char *count_string
, int from_tty
)
548 step_1 (0, 0, count_string
);
551 /* Likewise, but skip over subroutine calls as if single instructions. */
554 next_command (char *count_string
, int from_tty
)
556 step_1 (1, 0, count_string
);
559 /* Likewise, but step only one instruction. */
562 stepi_command (char *count_string
, int from_tty
)
564 step_1 (0, 1, count_string
);
568 nexti_command (char *count_string
, int from_tty
)
570 step_1 (1, 1, count_string
);
574 disable_longjmp_breakpoint_cleanup (void *ignore
)
576 disable_longjmp_breakpoint ();
580 step_1 (int skip_subroutines
, int single_inst
, char *count_string
)
583 struct frame_info
*frame
;
584 struct cleanup
*cleanups
= 0;
590 async_exec
= strip_bg_char (&count_string
);
592 /* If we get a request for running in the bg but the target
593 doesn't support it, error out. */
594 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
595 error ("Asynchronous execution not supported on this target.");
597 /* If we don't get a request of running in the bg, then we need
598 to simulate synchronous (fg) execution. */
599 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
601 /* Simulate synchronous execution */
602 async_disable_stdin ();
605 count
= count_string
? parse_and_eval_long (count_string
) : 1;
607 if (!single_inst
|| skip_subroutines
) /* leave si command alone */
609 enable_longjmp_breakpoint ();
610 if (!event_loop_p
|| !target_can_async_p ())
611 cleanups
= make_cleanup (disable_longjmp_breakpoint_cleanup
, 0 /*ignore*/);
613 make_exec_cleanup (disable_longjmp_breakpoint_cleanup
, 0 /*ignore*/);
616 /* In synchronous case, all is well, just use the regular for loop. */
617 if (!event_loop_p
|| !target_can_async_p ())
619 for (; count
> 0; count
--)
621 clear_proceed_status ();
623 frame
= get_current_frame ();
624 if (!frame
) /* Avoid coredump here. Why tho? */
625 error ("No current frame");
626 step_frame_id
= get_frame_id (frame
);
627 step_sp
= read_sp ();
631 find_pc_line_pc_range (stop_pc
, &step_range_start
, &step_range_end
);
632 if (step_range_end
== 0)
635 if (find_pc_partial_function (stop_pc
, &name
, &step_range_start
,
636 &step_range_end
) == 0)
637 error ("Cannot find bounds of current function");
639 target_terminal_ours ();
641 Single stepping until exit from function %s, \n\
642 which has no line number information.\n", name
);
647 /* Say we are stepping, but stop after one insn whatever it does. */
648 step_range_start
= step_range_end
= 1;
649 if (!skip_subroutines
)
651 Don't step over function calls, not even to functions lacking
653 step_over_calls
= STEP_OVER_NONE
;
656 if (skip_subroutines
)
657 step_over_calls
= STEP_OVER_ALL
;
659 step_multi
= (count
> 1);
660 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
666 if (!single_inst
|| skip_subroutines
)
667 do_cleanups (cleanups
);
670 /* In case of asynchronous target things get complicated, do only
671 one step for now, before returning control to the event loop. Let
672 the continuation figure out how many other steps we need to do,
673 and handle them one at the time, through step_once(). */
676 if (event_loop_p
&& target_can_async_p ())
677 step_once (skip_subroutines
, single_inst
, count
);
681 /* Called after we are done with one step operation, to check whether
682 we need to step again, before we print the prompt and return control
683 to the user. If count is > 1, we will need to do one more call to
684 proceed(), via step_once(). Basically it is like step_once and
685 step_1_continuation are co-recursive. */
687 step_1_continuation (struct continuation_arg
*arg
)
690 int skip_subroutines
;
693 skip_subroutines
= arg
->data
.integer
;
694 single_inst
= arg
->next
->data
.integer
;
695 count
= arg
->next
->next
->data
.integer
;
698 step_once (skip_subroutines
, single_inst
, count
- 1);
700 if (!single_inst
|| skip_subroutines
)
701 do_exec_cleanups (ALL_CLEANUPS
);
704 /* Do just one step operation. If count >1 we will have to set up a
705 continuation to be done after the target stops (after this one
706 step). This is useful to implement the 'step n' kind of commands, in
707 case of asynchronous targets. We had to split step_1 into two parts,
708 one to be done before proceed() and one afterwards. This function is
709 called in case of step n with n>1, after the first step operation has
712 step_once (int skip_subroutines
, int single_inst
, int count
)
714 struct continuation_arg
*arg1
;
715 struct continuation_arg
*arg2
;
716 struct continuation_arg
*arg3
;
717 struct frame_info
*frame
;
721 clear_proceed_status ();
723 frame
= get_current_frame ();
724 if (!frame
) /* Avoid coredump here. Why tho? */
725 error ("No current frame");
726 step_frame_id
= get_frame_id (frame
);
727 step_sp
= read_sp ();
731 find_pc_line_pc_range (stop_pc
, &step_range_start
, &step_range_end
);
733 /* If we have no line info, switch to stepi mode. */
734 if (step_range_end
== 0 && step_stop_if_no_debug
)
736 step_range_start
= step_range_end
= 1;
738 else if (step_range_end
== 0)
741 if (find_pc_partial_function (stop_pc
, &name
, &step_range_start
,
742 &step_range_end
) == 0)
743 error ("Cannot find bounds of current function");
745 target_terminal_ours ();
747 Single stepping until exit from function %s, \n\
748 which has no line number information.\n", name
);
753 /* Say we are stepping, but stop after one insn whatever it does. */
754 step_range_start
= step_range_end
= 1;
755 if (!skip_subroutines
)
757 Don't step over function calls, not even to functions lacking
759 step_over_calls
= STEP_OVER_NONE
;
762 if (skip_subroutines
)
763 step_over_calls
= STEP_OVER_ALL
;
765 step_multi
= (count
> 1);
767 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
769 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
771 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
773 arg1
->data
.integer
= skip_subroutines
;
775 arg2
->data
.integer
= single_inst
;
777 arg3
->data
.integer
= count
;
778 add_intermediate_continuation (step_1_continuation
, arg1
);
779 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
784 /* Continue program at specified address. */
787 jump_command (char *arg
, int from_tty
)
790 struct symtabs_and_lines sals
;
791 struct symtab_and_line sal
;
798 /* Find out whether we must run in the background. */
800 async_exec
= strip_bg_char (&arg
);
802 /* If we must run in the background, but the target can't do it,
804 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
805 error ("Asynchronous execution not supported on this target.");
807 /* If we are not asked to run in the bg, then prepare to run in the
808 foreground, synchronously. */
809 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
811 /* Simulate synchronous execution */
812 async_disable_stdin ();
816 error_no_arg ("starting address");
818 sals
= decode_line_spec_1 (arg
, 1);
821 error ("Unreasonable jump request");
827 if (sal
.symtab
== 0 && sal
.pc
== 0)
828 error ("No source file has been specified.");
830 resolve_sal_pc (&sal
); /* May error out */
832 /* See if we are trying to jump to another function. */
833 fn
= get_frame_function (get_current_frame ());
834 sfn
= find_pc_function (sal
.pc
);
835 if (fn
!= NULL
&& sfn
!= fn
)
837 if (!query ("Line %d is not in `%s'. Jump anyway? ", sal
.line
,
838 SYMBOL_PRINT_NAME (fn
)))
840 error ("Not confirmed.");
847 fixup_symbol_section (sfn
, 0);
848 if (section_is_overlay (SYMBOL_BFD_SECTION (sfn
)) &&
849 !section_is_mapped (SYMBOL_BFD_SECTION (sfn
)))
851 if (!query ("WARNING!!! Destination is in unmapped overlay! Jump anyway? "))
853 error ("Not confirmed.");
863 printf_filtered ("Continuing at ");
864 print_address_numeric (addr
, 1, gdb_stdout
);
865 printf_filtered (".\n");
868 clear_proceed_status ();
869 proceed (addr
, TARGET_SIGNAL_0
, 0);
873 /* Go to line or address in current procedure */
875 go_command (char *line_no
, int from_tty
)
877 if (line_no
== (char *) NULL
|| !*line_no
)
878 printf_filtered (GO_USAGE
);
881 tbreak_command (line_no
, from_tty
);
882 jump_command (line_no
, from_tty
);
887 /* Continue program giving it specified signal. */
890 signal_command (char *signum_exp
, int from_tty
)
892 enum target_signal oursig
;
894 dont_repeat (); /* Too dangerous. */
898 error_no_arg ("signal number");
900 /* It would be even slicker to make signal names be valid expressions,
901 (the type could be "enum $signal" or some such), then the user could
902 assign them to convenience variables. */
903 oursig
= target_signal_from_name (signum_exp
);
905 if (oursig
== TARGET_SIGNAL_UNKNOWN
)
907 /* No, try numeric. */
908 int num
= parse_and_eval_long (signum_exp
);
911 oursig
= TARGET_SIGNAL_0
;
913 oursig
= target_signal_from_command (num
);
918 if (oursig
== TARGET_SIGNAL_0
)
919 printf_filtered ("Continuing with no signal.\n");
921 printf_filtered ("Continuing with signal %s.\n",
922 target_signal_to_name (oursig
));
925 clear_proceed_status ();
926 /* "signal 0" should not get stuck if we are stopped at a breakpoint.
927 FIXME: Neither should "signal foo" but when I tried passing
928 (CORE_ADDR)-1 unconditionally I got a testsuite failure which I haven't
929 tried to track down yet. */
930 proceed (oursig
== TARGET_SIGNAL_0
? (CORE_ADDR
) -1 : stop_pc
, oursig
, 0);
933 /* Proceed until we reach a different source line with pc greater than
934 our current one or exit the function. We skip calls in both cases.
936 Note that eventually this command should probably be changed so
937 that only source lines are printed out when we hit the breakpoint
938 we set. This may involve changes to wait_for_inferior and the
939 proceed status code. */
942 until_next_command (int from_tty
)
944 struct frame_info
*frame
;
947 struct symtab_and_line sal
;
949 clear_proceed_status ();
951 frame
= get_current_frame ();
953 /* Step until either exited from this function or greater
954 than the current line (if in symbolic section) or pc (if
958 func
= find_pc_function (pc
);
962 struct minimal_symbol
*msymbol
= lookup_minimal_symbol_by_pc (pc
);
965 error ("Execution is not within a known function.");
967 step_range_start
= SYMBOL_VALUE_ADDRESS (msymbol
);
972 sal
= find_pc_line (pc
, 0);
974 step_range_start
= BLOCK_START (SYMBOL_BLOCK_VALUE (func
));
975 step_range_end
= sal
.end
;
978 step_over_calls
= STEP_OVER_ALL
;
979 step_frame_id
= get_frame_id (frame
);
980 step_sp
= read_sp ();
982 step_multi
= 0; /* Only one call to proceed */
984 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
988 until_command (char *arg
, int from_tty
)
992 if (!target_has_execution
)
993 error ("The program is not running.");
995 /* Find out whether we must run in the background. */
997 async_exec
= strip_bg_char (&arg
);
999 /* If we must run in the background, but the target can't do it,
1001 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
1002 error ("Asynchronous execution not supported on this target.");
1004 /* If we are not asked to run in the bg, then prepare to run in the
1005 foreground, synchronously. */
1006 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
1008 /* Simulate synchronous execution */
1009 async_disable_stdin ();
1013 until_break_command (arg
, from_tty
, 0);
1015 until_next_command (from_tty
);
1019 advance_command (char *arg
, int from_tty
)
1023 if (!target_has_execution
)
1024 error ("The program is not running.");
1027 error_no_arg ("a location");
1029 /* Find out whether we must run in the background. */
1031 async_exec
= strip_bg_char (&arg
);
1033 /* If we must run in the background, but the target can't do it,
1035 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
1036 error ("Asynchronous execution not supported on this target.");
1038 /* If we are not asked to run in the bg, then prepare to run in the
1039 foreground, synchronously. */
1040 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
1042 /* Simulate synchronous execution. */
1043 async_disable_stdin ();
1046 until_break_command (arg
, from_tty
, 1);
1050 /* Print the result of a function at the end of a 'finish' command. */
1053 print_return_value (int struct_return
, struct type
*value_type
)
1055 struct cleanup
*old_chain
;
1056 struct ui_stream
*stb
;
1057 struct value
*value
;
1061 /* The return value can be found in the inferior's registers. */
1062 value
= register_value_being_returned (value_type
, stop_registers
);
1064 /* FIXME: 2003-09-27: When returning from a nested inferior function
1065 call, it's possible (with no help from the architecture vector)
1066 to locate and return/print a "struct return" value. This is just
1067 a more complicated case of what is already being done in in the
1068 inferior function call code. In fact, when inferior function
1069 calls are made async, this will likely be made the norm. */
1070 else if (gdbarch_return_value_p (current_gdbarch
))
1071 /* We cannot determine the contents of the structure because it is
1072 on the stack, and we don't know where, since we did not
1073 initiate the call, as opposed to the call_function_by_hand
1076 gdb_assert (gdbarch_return_value (current_gdbarch
, value_type
,
1078 == RETURN_VALUE_STRUCT_CONVENTION
);
1079 ui_out_text (uiout
, "Value returned has type: ");
1080 ui_out_field_string (uiout
, "return-type", TYPE_NAME (value_type
));
1081 ui_out_text (uiout
, ".");
1082 ui_out_text (uiout
, " Cannot determine contents\n");
1087 if (EXTRACT_STRUCT_VALUE_ADDRESS_P ())
1089 CORE_ADDR addr
= EXTRACT_STRUCT_VALUE_ADDRESS (stop_registers
);
1091 error ("Function return value unknown.");
1092 value
= value_at (value_type
, addr
, NULL
);
1096 /* It is "struct return" yet the value is being extracted,
1097 presumably from registers, using EXTRACT_RETURN_VALUE.
1098 This doesn't make sense. Unfortunately, the legacy
1099 interfaces allowed this behavior. Sigh! */
1100 value
= allocate_value (value_type
);
1101 CHECK_TYPEDEF (value_type
);
1102 /* If the function returns void, don't bother fetching the
1104 EXTRACT_RETURN_VALUE (value_type
, stop_registers
,
1105 VALUE_CONTENTS_RAW (value
));
1110 stb
= ui_out_stream_new (uiout
);
1111 old_chain
= make_cleanup_ui_out_stream_delete (stb
);
1112 ui_out_text (uiout
, "Value returned is ");
1113 ui_out_field_fmt (uiout
, "gdb-result-var", "$%d",
1114 record_latest_value (value
));
1115 ui_out_text (uiout
, " = ");
1116 value_print (value
, stb
->stream
, 0, Val_no_prettyprint
);
1117 ui_out_field_stream (uiout
, "return-value", stb
);
1118 ui_out_text (uiout
, "\n");
1119 do_cleanups (old_chain
);
1122 /* Stuff that needs to be done by the finish command after the target
1123 has stopped. In asynchronous mode, we wait for the target to stop
1124 in the call to poll or select in the event loop, so it is
1125 impossible to do all the stuff as part of the finish_command
1126 function itself. The only chance we have to complete this command
1127 is in fetch_inferior_event, which is called by the event loop as
1128 soon as it detects that the target has stopped. This function is
1129 called via the cmd_continuation pointer. */
1132 finish_command_continuation (struct continuation_arg
*arg
)
1134 struct symbol
*function
;
1135 struct breakpoint
*breakpoint
;
1136 struct cleanup
*cleanups
;
1138 breakpoint
= (struct breakpoint
*) arg
->data
.pointer
;
1139 function
= (struct symbol
*) arg
->next
->data
.pointer
;
1140 cleanups
= (struct cleanup
*) arg
->next
->next
->data
.pointer
;
1142 if (bpstat_find_breakpoint (stop_bpstat
, breakpoint
) != NULL
1143 && function
!= NULL
)
1145 struct type
*value_type
;
1149 value_type
= TYPE_TARGET_TYPE (SYMBOL_TYPE (function
));
1151 internal_error (__FILE__
, __LINE__
,
1152 "finish_command: function has no target type");
1154 if (TYPE_CODE (value_type
) == TYPE_CODE_VOID
)
1156 do_exec_cleanups (cleanups
);
1160 CHECK_TYPEDEF (value_type
);
1161 gcc_compiled
= BLOCK_GCC_COMPILED (SYMBOL_BLOCK_VALUE (function
));
1162 struct_return
= using_struct_return (value_type
, gcc_compiled
);
1164 print_return_value (struct_return
, value_type
);
1167 do_exec_cleanups (cleanups
);
1170 /* "finish": Set a temporary breakpoint at the place the selected
1171 frame will return to, then continue. */
1174 finish_command (char *arg
, int from_tty
)
1176 struct symtab_and_line sal
;
1177 struct frame_info
*frame
;
1178 struct symbol
*function
;
1179 struct breakpoint
*breakpoint
;
1180 struct cleanup
*old_chain
;
1181 struct continuation_arg
*arg1
, *arg2
, *arg3
;
1185 /* Find out whether we must run in the background. */
1187 async_exec
= strip_bg_char (&arg
);
1189 /* If we must run in the background, but the target can't do it,
1191 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
1192 error ("Asynchronous execution not supported on this target.");
1194 /* If we are not asked to run in the bg, then prepare to run in the
1195 foreground, synchronously. */
1196 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
1198 /* Simulate synchronous execution. */
1199 async_disable_stdin ();
1203 error ("The \"finish\" command does not take any arguments.");
1204 if (!target_has_execution
)
1205 error ("The program is not running.");
1206 if (deprecated_selected_frame
== NULL
)
1207 error ("No selected frame.");
1209 frame
= get_prev_frame (deprecated_selected_frame
);
1211 error ("\"finish\" not meaningful in the outermost frame.");
1213 clear_proceed_status ();
1215 sal
= find_pc_line (get_frame_pc (frame
), 0);
1216 sal
.pc
= get_frame_pc (frame
);
1218 breakpoint
= set_momentary_breakpoint (sal
, get_frame_id (frame
), bp_finish
);
1220 if (!event_loop_p
|| !target_can_async_p ())
1221 old_chain
= make_cleanup_delete_breakpoint (breakpoint
);
1223 old_chain
= make_exec_cleanup_delete_breakpoint (breakpoint
);
1225 /* Find the function we will return from. */
1227 function
= find_pc_function (get_frame_pc (deprecated_selected_frame
));
1229 /* Print info on the selected frame, including level number but not
1233 printf_filtered ("Run till exit from ");
1234 print_stack_frame (deprecated_selected_frame
,
1235 frame_relative_level (deprecated_selected_frame
), 0);
1238 /* If running asynchronously and the target support asynchronous
1239 execution, set things up for the rest of the finish command to be
1240 completed later on, when gdb has detected that the target has
1241 stopped, in fetch_inferior_event. */
1242 if (event_loop_p
&& target_can_async_p ())
1245 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
1247 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
1249 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
1253 arg1
->data
.pointer
= breakpoint
;
1254 arg2
->data
.pointer
= function
;
1255 arg3
->data
.pointer
= old_chain
;
1256 add_continuation (finish_command_continuation
, arg1
);
1259 proceed_to_finish
= 1; /* We want stop_registers, please... */
1260 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
1262 /* Do this only if not running asynchronously or if the target
1263 cannot do async execution. Otherwise, complete this command when
1264 the target actually stops, in fetch_inferior_event. */
1265 if (!event_loop_p
|| !target_can_async_p ())
1267 /* Did we stop at our breakpoint? */
1268 if (bpstat_find_breakpoint (stop_bpstat
, breakpoint
) != NULL
1269 && function
!= NULL
)
1271 struct type
*value_type
;
1275 value_type
= TYPE_TARGET_TYPE (SYMBOL_TYPE (function
));
1277 internal_error (__FILE__
, __LINE__
,
1278 "finish_command: function has no target type");
1280 /* FIXME: Shouldn't we do the cleanups before returning? */
1281 if (TYPE_CODE (value_type
) == TYPE_CODE_VOID
)
1284 CHECK_TYPEDEF (value_type
);
1285 gcc_compiled
= BLOCK_GCC_COMPILED (SYMBOL_BLOCK_VALUE (function
));
1286 struct_return
= using_struct_return (value_type
, gcc_compiled
);
1288 print_return_value (struct_return
, value_type
);
1291 do_cleanups (old_chain
);
1297 program_info (char *args
, int from_tty
)
1299 bpstat bs
= stop_bpstat
;
1300 int num
= bpstat_num (&bs
);
1302 if (!target_has_execution
)
1304 printf_filtered ("The program being debugged is not being run.\n");
1308 target_files_info ();
1309 printf_filtered ("Program stopped at %s.\n",
1310 local_hex_string ((unsigned long) stop_pc
));
1312 printf_filtered ("It stopped after being stepped.\n");
1315 /* There may be several breakpoints in the same place, so this
1316 isn't as strange as it seems. */
1321 printf_filtered ("It stopped at a breakpoint that has ");
1322 printf_filtered ("since been deleted.\n");
1325 printf_filtered ("It stopped at breakpoint %d.\n", num
);
1326 num
= bpstat_num (&bs
);
1329 else if (stop_signal
!= TARGET_SIGNAL_0
)
1331 printf_filtered ("It stopped with signal %s, %s.\n",
1332 target_signal_to_name (stop_signal
),
1333 target_signal_to_string (stop_signal
));
1338 printf_filtered ("Type \"info stack\" or \"info registers\" ");
1339 printf_filtered ("for more information.\n");
1344 environment_info (char *var
, int from_tty
)
1348 char *val
= get_in_environ (inferior_environ
, var
);
1351 puts_filtered (var
);
1352 puts_filtered (" = ");
1353 puts_filtered (val
);
1354 puts_filtered ("\n");
1358 puts_filtered ("Environment variable \"");
1359 puts_filtered (var
);
1360 puts_filtered ("\" not defined.\n");
1365 char **vector
= environ_vector (inferior_environ
);
1368 puts_filtered (*vector
++);
1369 puts_filtered ("\n");
1375 set_environment_command (char *arg
, int from_tty
)
1377 char *p
, *val
, *var
;
1381 error_no_arg ("environment variable and value");
1383 /* Find seperation between variable name and value */
1384 p
= (char *) strchr (arg
, '=');
1385 val
= (char *) strchr (arg
, ' ');
1387 if (p
!= 0 && val
!= 0)
1389 /* We have both a space and an equals. If the space is before the
1390 equals, walk forward over the spaces til we see a nonspace
1391 (possibly the equals). */
1396 /* Now if the = is after the char following the spaces,
1397 take the char following the spaces. */
1401 else if (val
!= 0 && p
== 0)
1405 error_no_arg ("environment variable to set");
1407 if (p
== 0 || p
[1] == 0)
1411 p
= arg
+ strlen (arg
); /* So that savestring below will work */
1415 /* Not setting variable value to null */
1417 while (*val
== ' ' || *val
== '\t')
1421 while (p
!= arg
&& (p
[-1] == ' ' || p
[-1] == '\t'))
1424 var
= savestring (arg
, p
- arg
);
1427 printf_filtered ("Setting environment variable ");
1428 printf_filtered ("\"%s\" to null value.\n", var
);
1429 set_in_environ (inferior_environ
, var
, "");
1432 set_in_environ (inferior_environ
, var
, val
);
1437 unset_environment_command (char *var
, int from_tty
)
1441 /* If there is no argument, delete all environment variables.
1442 Ask for confirmation if reading from the terminal. */
1443 if (!from_tty
|| query ("Delete all environment variables? "))
1445 free_environ (inferior_environ
);
1446 inferior_environ
= make_environ ();
1450 unset_in_environ (inferior_environ
, var
);
1453 /* Handle the execution path (PATH variable) */
1455 static const char path_var_name
[] = "PATH";
1458 path_info (char *args
, int from_tty
)
1460 puts_filtered ("Executable and object file path: ");
1461 puts_filtered (get_in_environ (inferior_environ
, path_var_name
));
1462 puts_filtered ("\n");
1465 /* Add zero or more directories to the front of the execution path. */
1468 path_command (char *dirname
, int from_tty
)
1473 env
= get_in_environ (inferior_environ
, path_var_name
);
1474 /* Can be null if path is not set */
1477 exec_path
= xstrdup (env
);
1478 mod_path (dirname
, &exec_path
);
1479 set_in_environ (inferior_environ
, path_var_name
, exec_path
);
1482 path_info ((char *) NULL
, from_tty
);
1486 /* Print out the machine register regnum. If regnum is -1, print all
1487 registers (print_all == 1) or all non-float and non-vector
1488 registers (print_all == 0).
1490 For most machines, having all_registers_info() print the
1491 register(s) one per line is good enough. If a different format is
1492 required, (eg, for MIPS or Pyramid 90x, which both have lots of
1493 regs), or there is an existing convention for showing all the
1494 registers, define the architecture method PRINT_REGISTERS_INFO to
1495 provide that format. */
1498 default_print_registers_info (struct gdbarch
*gdbarch
,
1499 struct ui_file
*file
,
1500 struct frame_info
*frame
,
1501 int regnum
, int print_all
)
1504 const int numregs
= NUM_REGS
+ NUM_PSEUDO_REGS
;
1505 char raw_buffer
[MAX_REGISTER_SIZE
];
1506 char virtual_buffer
[MAX_REGISTER_SIZE
];
1508 if (DEPRECATED_DO_REGISTERS_INFO_P ())
1510 DEPRECATED_DO_REGISTERS_INFO (regnum
, print_all
);
1514 for (i
= 0; i
< numregs
; i
++)
1516 /* Decide between printing all regs, non-float / vector regs, or
1522 if (!gdbarch_register_reggroup_p (gdbarch
, i
, all_reggroup
))
1527 if (!gdbarch_register_reggroup_p (gdbarch
, i
, general_reggroup
))
1537 /* If the register name is empty, it is undefined for this
1538 processor, so don't display anything. */
1539 if (REGISTER_NAME (i
) == NULL
|| *(REGISTER_NAME (i
)) == '\0')
1542 fputs_filtered (REGISTER_NAME (i
), file
);
1543 print_spaces_filtered (15 - strlen (REGISTER_NAME (i
)), file
);
1545 /* Get the data in raw format. */
1546 if (! frame_register_read (frame
, i
, raw_buffer
))
1548 fprintf_filtered (file
, "*value not available*\n");
1552 /* FIXME: cagney/2002-08-03: This code shouldn't be necessary.
1553 The function frame_register_read() should have returned the
1554 pre-cooked register so no conversion is necessary. */
1555 /* Convert raw data to virtual format if necessary. */
1556 if (DEPRECATED_REGISTER_CONVERTIBLE (i
))
1558 DEPRECATED_REGISTER_CONVERT_TO_VIRTUAL (i
, register_type (current_gdbarch
, i
),
1559 raw_buffer
, virtual_buffer
);
1563 memcpy (virtual_buffer
, raw_buffer
,
1564 DEPRECATED_REGISTER_VIRTUAL_SIZE (i
));
1567 /* If virtual format is floating, print it that way, and in raw
1569 if (TYPE_CODE (register_type (current_gdbarch
, i
)) == TYPE_CODE_FLT
)
1573 val_print (register_type (current_gdbarch
, i
), virtual_buffer
, 0, 0,
1574 file
, 0, 1, 0, Val_pretty_default
);
1576 fprintf_filtered (file
, "\t(raw 0x");
1577 for (j
= 0; j
< DEPRECATED_REGISTER_RAW_SIZE (i
); j
++)
1580 if (TARGET_BYTE_ORDER
== BFD_ENDIAN_BIG
)
1583 idx
= DEPRECATED_REGISTER_RAW_SIZE (i
) - 1 - j
;
1584 fprintf_filtered (file
, "%02x", (unsigned char) raw_buffer
[idx
]);
1586 fprintf_filtered (file
, ")");
1590 /* Print the register in hex. */
1591 val_print (register_type (current_gdbarch
, i
), virtual_buffer
, 0, 0,
1592 file
, 'x', 1, 0, Val_pretty_default
);
1593 /* If not a vector register, print it also according to its
1595 if (TYPE_VECTOR (register_type (current_gdbarch
, i
)) == 0)
1597 fprintf_filtered (file
, "\t");
1598 val_print (register_type (current_gdbarch
, i
), virtual_buffer
, 0, 0,
1599 file
, 0, 1, 0, Val_pretty_default
);
1603 fprintf_filtered (file
, "\n");
1608 registers_info (char *addr_exp
, int fpregs
)
1610 int regnum
, numregs
;
1613 if (!target_has_registers
)
1614 error ("The program has no registers now.");
1615 if (deprecated_selected_frame
== NULL
)
1616 error ("No selected frame.");
1620 gdbarch_print_registers_info (current_gdbarch
, gdb_stdout
,
1621 deprecated_selected_frame
, -1, fpregs
);
1625 while (*addr_exp
!= '\0')
1630 /* Keep skipping leading white space. */
1631 if (isspace ((*addr_exp
)))
1637 /* Discard any leading ``$''. Check that there is something
1638 resembling a register following it. */
1639 if (addr_exp
[0] == '$')
1641 if (isspace ((*addr_exp
)) || (*addr_exp
) == '\0')
1642 error ("Missing register name");
1644 /* Find the start/end of this register name/num/group. */
1646 while ((*addr_exp
) != '\0' && !isspace ((*addr_exp
)))
1650 /* Figure out what we've found and display it. */
1652 /* A register name? */
1654 int regnum
= frame_map_name_to_regnum (deprecated_selected_frame
,
1655 start
, end
- start
);
1658 gdbarch_print_registers_info (current_gdbarch
, gdb_stdout
,
1659 deprecated_selected_frame
, regnum
, fpregs
);
1664 /* A register number? (how portable is this one?). */
1667 int regnum
= strtol (start
, &endptr
, 0);
1670 && regnum
< NUM_REGS
+ NUM_PSEUDO_REGS
)
1672 gdbarch_print_registers_info (current_gdbarch
, gdb_stdout
,
1673 deprecated_selected_frame
, regnum
, fpregs
);
1678 /* A register group? */
1680 struct reggroup
*group
;
1681 for (group
= reggroup_next (current_gdbarch
, NULL
);
1683 group
= reggroup_next (current_gdbarch
, group
))
1685 /* Don't bother with a length check. Should the user
1686 enter a short register group name, go with the first
1687 group that matches. */
1688 if (strncmp (start
, reggroup_name (group
), end
- start
) == 0)
1694 for (regnum
= 0; regnum
< NUM_REGS
+ NUM_PSEUDO_REGS
; regnum
++)
1696 if (gdbarch_register_reggroup_p (current_gdbarch
, regnum
,
1698 gdbarch_print_registers_info (current_gdbarch
,
1699 gdb_stdout
, deprecated_selected_frame
,
1706 /* Nothing matched. */
1707 error ("Invalid register `%.*s'", (int) (end
- start
), start
);
1712 all_registers_info (char *addr_exp
, int from_tty
)
1714 registers_info (addr_exp
, 1);
1718 nofp_registers_info (char *addr_exp
, int from_tty
)
1720 registers_info (addr_exp
, 0);
1724 print_vector_info (struct gdbarch
*gdbarch
, struct ui_file
*file
,
1725 struct frame_info
*frame
, const char *args
)
1727 if (!target_has_registers
)
1728 error ("The program has no registers now.");
1729 if (deprecated_selected_frame
== NULL
)
1730 error ("No selected frame.");
1732 if (gdbarch_print_vector_info_p (gdbarch
))
1733 gdbarch_print_vector_info (gdbarch
, file
, frame
, args
);
1737 int printed_something
= 0;
1739 for (regnum
= 0; regnum
< NUM_REGS
+ NUM_PSEUDO_REGS
; regnum
++)
1741 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, vector_reggroup
))
1743 printed_something
= 1;
1744 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
1747 if (!printed_something
)
1748 fprintf_filtered (file
, "No vector information\n");
1753 vector_info (char *args
, int from_tty
)
1755 print_vector_info (current_gdbarch
, gdb_stdout
, deprecated_selected_frame
, args
);
1761 * Should save/restore the tty state since it might be that the
1762 * program to be debugged was started on this tty and it wants
1763 * the tty in some state other than what we want. If it's running
1764 * on another terminal or without a terminal, then saving and
1765 * restoring the tty state is a harmless no-op.
1766 * This only needs to be done if we are attaching to a process.
1771 takes a program started up outside of gdb and ``attaches'' to it.
1772 This stops it cold in its tracks and allows us to start debugging it.
1773 and wait for the trace-trap that results from attaching. */
1776 attach_command (char *args
, int from_tty
)
1779 char *full_exec_path
= NULL
;
1781 dont_repeat (); /* Not for the faint of heart */
1783 if (target_has_execution
)
1785 if (query ("A program is being debugged already. Kill it? "))
1788 error ("Not killed.");
1791 target_attach (args
, from_tty
);
1793 /* Set up the "saved terminal modes" of the inferior
1794 based on what modes we are starting it with. */
1795 target_terminal_init ();
1797 /* Install inferior's terminal modes. */
1798 target_terminal_inferior ();
1800 /* Set up execution context to know that we should return from
1801 wait_for_inferior as soon as the target reports a stop. */
1802 init_wait_for_inferior ();
1803 clear_proceed_status ();
1805 /* No traps are generated when attaching to inferior under Mach 3
1807 #ifndef ATTACH_NO_WAIT
1808 /* Careful here. See comments in inferior.h. Basically some OSes
1809 don't ignore SIGSTOPs on continue requests anymore. We need a
1810 way for handle_inferior_event to reset the stop_signal variable
1811 after an attach, and this is what STOP_QUIETLY_NO_SIGSTOP is for. */
1812 stop_soon
= STOP_QUIETLY_NO_SIGSTOP
;
1813 wait_for_inferior ();
1814 stop_soon
= NO_STOP_QUIETLY
;
1818 * If no exec file is yet known, try to determine it from the
1821 exec_file
= (char *) get_exec_file (0);
1824 exec_file
= target_pid_to_exec_file (PIDGET (inferior_ptid
));
1827 /* It's possible we don't have a full path, but rather just a
1828 filename. Some targets, such as HP-UX, don't provide the
1831 Attempt to qualify the filename against the source path.
1832 (If that fails, we'll just fall back on the original
1833 filename. Not much more we can do...)
1835 if (!source_full_path_of (exec_file
, &full_exec_path
))
1836 full_exec_path
= savestring (exec_file
, strlen (exec_file
));
1838 exec_file_attach (full_exec_path
, from_tty
);
1839 symbol_file_add_main (full_exec_path
, from_tty
);
1844 /* Add shared library symbols from the newly attached process, if any. */
1845 SOLIB_ADD ((char *) 0, from_tty
, ¤t_target
, auto_solib_add
);
1846 re_enable_breakpoints_in_shlibs ();
1849 /* Take any necessary post-attaching actions for this platform.
1851 target_post_attach (PIDGET (inferior_ptid
));
1861 * takes a program previously attached to and detaches it.
1862 * The program resumes execution and will no longer stop
1863 * on signals, etc. We better not have left any breakpoints
1864 * in the program or it'll die when it hits one. For this
1865 * to work, it may be necessary for the process to have been
1866 * previously attached. It *might* work if the program was
1867 * started via the normal ptrace (PTRACE_TRACEME).
1871 detach_command (char *args
, int from_tty
)
1873 dont_repeat (); /* Not for the faint of heart */
1874 target_detach (args
, from_tty
);
1875 #if defined(SOLIB_RESTART)
1882 /* Disconnect from the current target without resuming it (leaving it
1883 waiting for a debugger).
1885 We'd better not have left any breakpoints in the program or the
1886 next debugger will get confused. Currently only supported for some
1887 remote targets, since the normal attach mechanisms don't work on
1888 stopped processes on some native platforms (e.g. GNU/Linux). */
1891 disconnect_command (char *args
, int from_tty
)
1893 dont_repeat (); /* Not for the faint of heart */
1894 target_disconnect (args
, from_tty
);
1895 #if defined(SOLIB_RESTART)
1902 /* Stop the execution of the target while running in async mode, in
1905 interrupt_target_command (char *args
, int from_tty
)
1907 if (event_loop_p
&& target_can_async_p ())
1909 dont_repeat (); /* Not for the faint of heart */
1915 print_float_info (struct gdbarch
*gdbarch
, struct ui_file
*file
,
1916 struct frame_info
*frame
, const char *args
)
1918 if (!target_has_registers
)
1919 error ("The program has no registers now.");
1920 if (deprecated_selected_frame
== NULL
)
1921 error ("No selected frame.");
1923 if (gdbarch_print_float_info_p (gdbarch
))
1924 gdbarch_print_float_info (gdbarch
, file
, frame
, args
);
1928 int printed_something
= 0;
1930 for (regnum
= 0; regnum
< NUM_REGS
+ NUM_PSEUDO_REGS
; regnum
++)
1932 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, float_reggroup
))
1934 printed_something
= 1;
1935 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
1938 if (!printed_something
)
1939 fprintf_filtered (file
, "\
1940 No floating-point info available for this processor.\n");
1945 float_info (char *args
, int from_tty
)
1947 print_float_info (current_gdbarch
, gdb_stdout
, deprecated_selected_frame
, args
);
1951 unset_command (char *args
, int from_tty
)
1953 printf_filtered ("\"unset\" must be followed by the name of ");
1954 printf_filtered ("an unset subcommand.\n");
1955 help_list (unsetlist
, "unset ", -1, gdb_stdout
);
1959 _initialize_infcmd (void)
1961 struct cmd_list_element
*c
;
1963 c
= add_com ("tty", class_run
, tty_command
,
1964 "Set terminal for future runs of program being debugged.");
1965 set_cmd_completer (c
, filename_completer
);
1967 c
= add_set_cmd ("args", class_run
, var_string_noescape
,
1968 (char *) &inferior_args
,
1969 "Set argument list to give program being debugged when it is started.\n\
1970 Follow this command with any number of args, to be passed to the program.",
1972 set_cmd_completer (c
, filename_completer
);
1973 set_cmd_sfunc (c
, notice_args_set
);
1974 c
= add_show_from_set (c
, &showlist
);
1975 set_cmd_sfunc (c
, notice_args_read
);
1978 ("environment", no_class
, environment_info
,
1979 "The environment to give the program, or one variable's value.\n\
1980 With an argument VAR, prints the value of environment variable VAR to\n\
1981 give the program being debugged. With no arguments, prints the entire\n\
1982 environment to be given to the program.", &showlist
);
1983 set_cmd_completer (c
, noop_completer
);
1985 add_prefix_cmd ("unset", no_class
, unset_command
,
1986 "Complement to certain \"set\" commands.",
1987 &unsetlist
, "unset ", 0, &cmdlist
);
1989 c
= add_cmd ("environment", class_run
, unset_environment_command
,
1990 "Cancel environment variable VAR for the program.\n\
1991 This does not affect the program until the next \"run\" command.",
1993 set_cmd_completer (c
, noop_completer
);
1995 c
= add_cmd ("environment", class_run
, set_environment_command
,
1996 "Set environment variable value to give the program.\n\
1997 Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\
1998 VALUES of environment variables are uninterpreted strings.\n\
1999 This does not affect the program until the next \"run\" command.",
2001 set_cmd_completer (c
, noop_completer
);
2003 c
= add_com ("path", class_files
, path_command
,
2004 "Add directory DIR(s) to beginning of search path for object files.\n\
2005 $cwd in the path means the current working directory.\n\
2006 This path is equivalent to the $PATH shell variable. It is a list of\n\
2007 directories, separated by colons. These directories are searched to find\n\
2008 fully linked executable files and separately compiled object files as needed.");
2009 set_cmd_completer (c
, filename_completer
);
2011 c
= add_cmd ("paths", no_class
, path_info
,
2012 "Current search path for finding object files.\n\
2013 $cwd in the path means the current working directory.\n\
2014 This path is equivalent to the $PATH shell variable. It is a list of\n\
2015 directories, separated by colons. These directories are searched to find\n\
2016 fully linked executable files and separately compiled object files as needed.",
2018 set_cmd_completer (c
, noop_completer
);
2020 add_com ("attach", class_run
, attach_command
,
2021 "Attach to a process or file outside of GDB.\n\
2022 This command attaches to another target, of the same type as your last\n\
2023 \"target\" command (\"info files\" will show your target stack).\n\
2024 The command may take as argument a process id or a device file.\n\
2025 For a process id, you must have permission to send the process a signal,\n\
2026 and it must have the same effective uid as the debugger.\n\
2027 When using \"attach\" with a process id, the debugger finds the\n\
2028 program running in the process, looking first in the current working\n\
2029 directory, or (if not found there) using the source file search path\n\
2030 (see the \"directory\" command). You can also use the \"file\" command\n\
2031 to specify the program, and to load its symbol table.");
2033 add_com ("detach", class_run
, detach_command
,
2034 "Detach a process or file previously attached.\n\
2035 If a process, it is no longer traced, and it continues its execution. If\n\
2036 you were debugging a file, the file is closed and gdb no longer accesses it.");
2038 add_com ("disconnect", class_run
, disconnect_command
,
2039 "Disconnect from a target.\n\
2040 The target will wait for another debugger to connect. Not available for\n\
2043 add_com ("signal", class_run
, signal_command
,
2044 "Continue program giving it signal specified by the argument.\n\
2045 An argument of \"0\" means continue program without giving it a signal.");
2047 add_com ("stepi", class_run
, stepi_command
,
2048 "Step one instruction exactly.\n\
2049 Argument N means do this N times (or till program stops for another reason).");
2050 add_com_alias ("si", "stepi", class_alias
, 0);
2052 add_com ("nexti", class_run
, nexti_command
,
2053 "Step one instruction, but proceed through subroutine calls.\n\
2054 Argument N means do this N times (or till program stops for another reason).");
2055 add_com_alias ("ni", "nexti", class_alias
, 0);
2057 add_com ("finish", class_run
, finish_command
,
2058 "Execute until selected stack frame returns.\n\
2059 Upon return, the value returned is printed and put in the value history.");
2061 add_com ("next", class_run
, next_command
,
2062 "Step program, proceeding through subroutine calls.\n\
2063 Like the \"step\" command as long as subroutine calls do not happen;\n\
2064 when they do, the call is treated as one instruction.\n\
2065 Argument N means do this N times (or till program stops for another reason).");
2066 add_com_alias ("n", "next", class_run
, 1);
2068 add_com_alias ("S", "next", class_run
, 1);
2070 add_com ("step", class_run
, step_command
,
2071 "Step program until it reaches a different source line.\n\
2072 Argument N means do this N times (or till program stops for another reason).");
2073 add_com_alias ("s", "step", class_run
, 1);
2075 c
= add_com ("until", class_run
, until_command
,
2076 "Execute until the program reaches a source line greater than the current\n\
2077 or a specified location (same args as break command) within the current frame.");
2078 set_cmd_completer (c
, location_completer
);
2079 add_com_alias ("u", "until", class_run
, 1);
2081 c
= add_com ("advance", class_run
, advance_command
,
2082 "Continue the program up to the given location (same form as args for break command).\n\
2083 Execution will also stop upon exit from the current stack frame.");
2084 set_cmd_completer (c
, location_completer
);
2086 c
= add_com ("jump", class_run
, jump_command
,
2087 "Continue program being debugged at specified line or address.\n\
2088 Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\
2089 for an address to start at.");
2090 set_cmd_completer (c
, location_completer
);
2094 c
= add_com ("go", class_run
, go_command
,
2095 "Usage: go <location>\n\
2096 Continue program being debugged, stopping at specified line or \n\
2098 Give as argument either LINENUM or *ADDR, where ADDR is an \n\
2099 expression for an address to start at.\n\
2100 This command is a combination of tbreak and jump.");
2101 set_cmd_completer (c
, location_completer
);
2105 add_com_alias ("g", "go", class_run
, 1);
2107 add_com ("continue", class_run
, continue_command
,
2108 "Continue program being debugged, after signal or breakpoint.\n\
2109 If proceeding from breakpoint, a number N may be used as an argument,\n\
2110 which means to set the ignore count of that breakpoint to N - 1 (so that\n\
2111 the breakpoint won't break until the Nth time it is reached).");
2112 add_com_alias ("c", "cont", class_run
, 1);
2113 add_com_alias ("fg", "cont", class_run
, 1);
2115 c
= add_com ("run", class_run
, run_command
,
2116 "Start debugged program. You may specify arguments to give it.\n\
2117 Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\
2118 Input and output redirection with \">\", \"<\", or \">>\" are also allowed.\n\n\
2119 With no arguments, uses arguments last specified (with \"run\" or \"set args\").\n\
2120 To cancel previous arguments and run with no arguments,\n\
2121 use \"set args\" without arguments.");
2122 set_cmd_completer (c
, filename_completer
);
2123 add_com_alias ("r", "run", class_run
, 1);
2125 add_com ("R", class_run
, run_no_args_command
,
2126 "Start debugged program with no arguments.");
2128 add_com ("interrupt", class_run
, interrupt_target_command
,
2129 "Interrupt the execution of the debugged program.");
2131 add_info ("registers", nofp_registers_info
,
2132 "List of integer registers and their contents, for selected stack frame.\n\
2133 Register name as argument means describe only that register.");
2134 add_info_alias ("r", "registers", 1);
2137 add_com ("lr", class_info
, nofp_registers_info
,
2138 "List of integer registers and their contents, for selected stack frame.\n\
2139 Register name as argument means describe only that register.");
2140 add_info ("all-registers", all_registers_info
,
2141 "List of all registers and their contents, for selected stack frame.\n\
2142 Register name as argument means describe only that register.");
2144 add_info ("program", program_info
,
2145 "Execution status of the program.");
2147 add_info ("float", float_info
,
2148 "Print the status of the floating point unit\n");
2150 add_info ("vector", vector_info
,
2151 "Print the status of the vector unit\n");
2153 inferior_environ
= make_environ ();
2154 init_environ (inferior_environ
);