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
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"
48 /* Functions exported for general use, in inferior.h: */
50 void all_registers_info (char *, int);
52 void registers_info (char *, int);
54 void nexti_command (char *, int);
56 void stepi_command (char *, int);
58 void continue_command (char *, int);
60 void interrupt_target_command (char *args
, int from_tty
);
62 /* Local functions: */
64 static void nofp_registers_info (char *, int);
66 static void print_return_value (int struct_return
, struct type
*value_type
);
68 static void finish_command_continuation (struct continuation_arg
*);
70 static void until_next_command (int);
72 static void until_command (char *, int);
74 static void path_info (char *, int);
76 static void path_command (char *, int);
78 static void unset_command (char *, int);
80 static void float_info (char *, int);
82 static void detach_command (char *, int);
84 static void disconnect_command (char *, int);
86 static void unset_environment_command (char *, int);
88 static void set_environment_command (char *, int);
90 static void environment_info (char *, int);
92 static void program_info (char *, int);
94 static void finish_command (char *, int);
96 static void signal_command (char *, int);
98 static void jump_command (char *, int);
100 static void step_1 (int, int, char *);
101 static void step_once (int skip_subroutines
, int single_inst
, int count
);
102 static void step_1_continuation (struct continuation_arg
*arg
);
104 static void next_command (char *, int);
106 static void step_command (char *, int);
108 static void run_command (char *, int);
110 static void run_no_args_command (char *args
, int from_tty
);
112 static void go_command (char *line_no
, int from_tty
);
114 static int strip_bg_char (char **);
116 void _initialize_infcmd (void);
118 #define GO_USAGE "Usage: go <location>\n"
120 #define ERROR_NO_INFERIOR \
121 if (!target_has_execution) error ("The program is not being run.");
123 /* String containing arguments to give to the program, separated by spaces.
124 Empty string (pointer to '\0') means no args. */
126 static char *inferior_args
;
128 /* The inferior arguments as a vector. If INFERIOR_ARGC is nonzero,
129 then we must compute INFERIOR_ARGS from this (via the target). */
131 static int inferior_argc
;
132 static char **inferior_argv
;
134 /* File name for default use for standard in/out in the inferior. */
136 char *inferior_io_terminal
;
138 /* Pid of our debugged inferior, or 0 if no inferior now.
139 Since various parts of infrun.c test this to see whether there is a program
140 being debugged it should be nonzero (currently 3 is used) for remote
143 ptid_t inferior_ptid
;
145 /* Last signal that the inferior received (why it stopped). */
147 enum target_signal stop_signal
;
149 /* Address at which inferior stopped. */
153 /* Chain containing status of breakpoint(s) that we have stopped at. */
157 /* Flag indicating that a command has proceeded the inferior past the
158 current breakpoint. */
160 int breakpoint_proceeded
;
162 /* Nonzero if stopped due to a step command. */
166 /* Nonzero if stopped due to completion of a stack dummy routine. */
168 int stop_stack_dummy
;
170 /* Nonzero if stopped due to a random (unexpected) signal in inferior
173 int stopped_by_random_signal
;
175 /* Range to single step within.
176 If this is nonzero, respond to a single-step signal
177 by continuing to step if the pc is in this range. */
179 CORE_ADDR step_range_start
; /* Inclusive */
180 CORE_ADDR step_range_end
; /* Exclusive */
182 /* Stack frame address as of when stepping command was issued.
183 This is how we know when we step into a subroutine call,
184 and how to set the frame for the breakpoint used to step out. */
186 struct frame_id step_frame_id
;
188 /* Our notion of the current stack pointer. */
192 enum step_over_calls_kind step_over_calls
;
194 /* If stepping, nonzero means step count is > 1
195 so don't print frame next time inferior stops
196 if it stops due to stepping. */
200 /* Environment to use for running inferior,
201 in format described in environ.h. */
203 struct environ
*inferior_environ
;
205 /* Accessor routines. */
208 get_inferior_args (void)
210 if (inferior_argc
!= 0)
214 n
= gdbarch_construct_inferior_arguments (current_gdbarch
,
215 inferior_argc
, inferior_argv
);
216 old
= set_inferior_args (n
);
220 if (inferior_args
== NULL
)
221 inferior_args
= xstrdup ("");
223 return inferior_args
;
227 set_inferior_args (char *newargs
)
229 char *saved_args
= inferior_args
;
231 inferior_args
= newargs
;
239 set_inferior_args_vector (int argc
, char **argv
)
241 inferior_argc
= argc
;
242 inferior_argv
= argv
;
245 /* Notice when `set args' is run. */
247 notice_args_set (char *args
, int from_tty
, struct cmd_list_element
*c
)
253 /* Notice when `show args' is run. */
255 notice_args_read (char *args
, int from_tty
, struct cmd_list_element
*c
)
257 /* Might compute the value. */
258 get_inferior_args ();
262 /* Compute command-line string given argument vector. This does the
263 same shell processing as fork_inferior. */
265 construct_inferior_arguments (struct gdbarch
*gdbarch
, int argc
, char **argv
)
269 if (STARTUP_WITH_SHELL
)
271 /* This holds all the characters considered special to the
272 typical Unix shells. We include `^' because the SunOS
273 /bin/sh treats it as a synonym for `|'. */
274 char *special
= "\"!#$&*()\\|[]{}<>?'\"`~^; \t\n";
279 /* We over-compute the size. It shouldn't matter. */
280 for (i
= 0; i
< argc
; ++i
)
281 length
+= 2 * strlen (argv
[i
]) + 1 + 2 * (argv
[i
][0] == '\0');
283 result
= (char *) xmalloc (length
);
286 for (i
= 0; i
< argc
; ++i
)
291 /* Need to handle empty arguments specially. */
292 if (argv
[i
][0] == '\0')
299 for (cp
= argv
[i
]; *cp
; ++cp
)
301 if (strchr (special
, *cp
) != NULL
)
311 /* In this case we can't handle arguments that contain spaces,
312 tabs, or newlines -- see breakup_args(). */
316 for (i
= 0; i
< argc
; ++i
)
318 char *cp
= strchr (argv
[i
], ' ');
320 cp
= strchr (argv
[i
], '\t');
322 cp
= strchr (argv
[i
], '\n');
324 error ("can't handle command-line argument containing whitespace");
325 length
+= strlen (argv
[i
]) + 1;
328 result
= (char *) xmalloc (length
);
330 for (i
= 0; i
< argc
; ++i
)
333 strcat (result
, " ");
334 strcat (result
, argv
[i
]);
342 /* This function detects whether or not a '&' character (indicating
343 background execution) has been added as *the last* of the arguments ARGS
344 of a command. If it has, it removes it and returns 1. Otherwise it
345 does nothing and returns 0. */
347 strip_bg_char (char **args
)
351 p
= strchr (*args
, '&');
355 if (p
== (*args
+ strlen (*args
) - 1))
357 if (strlen (*args
) > 1)
361 while (*p
== ' ' || *p
== '\t');
373 tty_command (char *file
, int from_tty
)
376 error_no_arg ("terminal name for running target process");
378 inferior_io_terminal
= savestring (file
, strlen (file
));
382 run_command (char *args
, int from_tty
)
388 if (! ptid_equal (inferior_ptid
, null_ptid
) && target_has_execution
)
391 && !query ("The program being debugged has been started already.\n\
392 Start it from the beginning? "))
393 error ("Program not restarted.");
395 #if defined(SOLIB_RESTART)
398 init_wait_for_inferior ();
401 clear_breakpoint_hit_counts ();
403 /* Purge old solib objfiles. */
404 objfile_purge_solibs ();
406 do_run_cleanups (NULL
);
408 /* The comment here used to read, "The exec file is re-read every
409 time we do a generic_mourn_inferior, so we just have to worry
410 about the symbol file." The `generic_mourn_inferior' function
411 gets called whenever the program exits. However, suppose the
412 program exits, and *then* the executable file changes? We need
413 to check again here. Since reopen_exec_file doesn't do anything
414 if the timestamp hasn't changed, I don't see the harm. */
418 exec_file
= (char *) get_exec_file (0);
420 /* We keep symbols from add-symbol-file, on the grounds that the
421 user might want to add some symbols before running the program
422 (right?). But sometimes (dynamic loading where the user manually
423 introduces the new symbols with add-symbol-file), the code which
424 the symbols describe does not persist between runs. Currently
425 the user has to manually nuke all symbols between runs if they
426 want them to go away (PR 2207). This is probably reasonable. */
430 if (event_loop_p
&& target_can_async_p ())
431 async_disable_stdin ();
435 int async_exec
= strip_bg_char (&args
);
437 /* If we get a request for running in the bg but the target
438 doesn't support it, error out. */
439 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
440 error ("Asynchronous execution not supported on this target.");
442 /* If we don't get a request of running in the bg, then we need
443 to simulate synchronous (fg) execution. */
444 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
446 /* Simulate synchronous execution */
447 async_disable_stdin ();
450 /* If there were other args, beside '&', process them. */
453 char *old_args
= set_inferior_args (xstrdup (args
));
460 ui_out_field_string (uiout
, NULL
, "Starting program");
461 ui_out_text (uiout
, ": ");
463 ui_out_field_string (uiout
, "execfile", exec_file
);
464 ui_out_spaces (uiout
, 1);
465 /* We call get_inferior_args() because we might need to compute
467 ui_out_field_string (uiout
, "infargs", get_inferior_args ());
468 ui_out_text (uiout
, "\n");
469 ui_out_flush (uiout
);
472 /* We call get_inferior_args() because we might need to compute
474 target_create_inferior (exec_file
, get_inferior_args (),
475 environ_vector (inferior_environ
));
480 run_no_args_command (char *args
, int from_tty
)
482 char *old_args
= set_inferior_args (xstrdup (""));
488 continue_command (char *proc_count_exp
, int from_tty
)
493 /* Find out whether we must run in the background. */
494 if (proc_count_exp
!= NULL
)
495 async_exec
= strip_bg_char (&proc_count_exp
);
497 /* If we must run in the background, but the target can't do it,
499 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
500 error ("Asynchronous execution not supported on this target.");
502 /* If we are not asked to run in the bg, then prepare to run in the
503 foreground, synchronously. */
504 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
506 /* Simulate synchronous execution */
507 async_disable_stdin ();
510 /* If have argument (besides '&'), set proceed count of breakpoint
512 if (proc_count_exp
!= NULL
)
514 bpstat bs
= stop_bpstat
;
515 int num
= bpstat_num (&bs
);
516 if (num
== 0 && from_tty
)
519 ("Not stopped at any breakpoint; argument ignored.\n");
523 set_ignore_count (num
,
524 parse_and_eval_long (proc_count_exp
) - 1,
526 /* set_ignore_count prints a message ending with a period.
527 So print two spaces before "Continuing.". */
529 printf_filtered (" ");
530 num
= bpstat_num (&bs
);
535 printf_filtered ("Continuing.\n");
537 clear_proceed_status ();
539 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
542 /* Step until outside of current statement. */
545 step_command (char *count_string
, int from_tty
)
547 step_1 (0, 0, count_string
);
550 /* Likewise, but skip over subroutine calls as if single instructions. */
553 next_command (char *count_string
, int from_tty
)
555 step_1 (1, 0, count_string
);
558 /* Likewise, but step only one instruction. */
561 stepi_command (char *count_string
, int from_tty
)
563 step_1 (0, 1, count_string
);
567 nexti_command (char *count_string
, int from_tty
)
569 step_1 (1, 1, count_string
);
573 disable_longjmp_breakpoint_cleanup (void *ignore
)
575 disable_longjmp_breakpoint ();
579 step_1 (int skip_subroutines
, int single_inst
, char *count_string
)
582 struct frame_info
*frame
;
583 struct cleanup
*cleanups
= 0;
589 async_exec
= strip_bg_char (&count_string
);
591 /* If we get a request for running in the bg but the target
592 doesn't support it, error out. */
593 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
594 error ("Asynchronous execution not supported on this target.");
596 /* If we don't get a request of running in the bg, then we need
597 to simulate synchronous (fg) execution. */
598 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
600 /* Simulate synchronous execution */
601 async_disable_stdin ();
604 count
= count_string
? parse_and_eval_long (count_string
) : 1;
606 if (!single_inst
|| skip_subroutines
) /* leave si command alone */
608 enable_longjmp_breakpoint ();
609 if (!event_loop_p
|| !target_can_async_p ())
610 cleanups
= make_cleanup (disable_longjmp_breakpoint_cleanup
, 0 /*ignore*/);
612 make_exec_cleanup (disable_longjmp_breakpoint_cleanup
, 0 /*ignore*/);
615 /* In synchronous case, all is well, just use the regular for loop. */
616 if (!event_loop_p
|| !target_can_async_p ())
618 for (; count
> 0; count
--)
620 clear_proceed_status ();
622 frame
= get_current_frame ();
623 if (!frame
) /* Avoid coredump here. Why tho? */
624 error ("No current frame");
625 step_frame_id
= get_frame_id (frame
);
626 step_sp
= read_sp ();
630 find_pc_line_pc_range (stop_pc
, &step_range_start
, &step_range_end
);
631 if (step_range_end
== 0)
634 if (find_pc_partial_function (stop_pc
, &name
, &step_range_start
,
635 &step_range_end
) == 0)
636 error ("Cannot find bounds of current function");
638 target_terminal_ours ();
640 Single stepping until exit from function %s, \n\
641 which has no line number information.\n", name
);
646 /* Say we are stepping, but stop after one insn whatever it does. */
647 step_range_start
= step_range_end
= 1;
648 if (!skip_subroutines
)
650 Don't step over function calls, not even to functions lacking
652 step_over_calls
= STEP_OVER_NONE
;
655 if (skip_subroutines
)
656 step_over_calls
= STEP_OVER_ALL
;
658 step_multi
= (count
> 1);
659 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
664 /* FIXME: On nexti, this may have already been done (when we hit the
665 step resume break, I think). Probably this should be moved to
666 wait_for_inferior (near the top). */
667 #if defined (SHIFT_INST_REGS)
672 if (!single_inst
|| skip_subroutines
)
673 do_cleanups (cleanups
);
676 /* In case of asynchronous target things get complicated, do only
677 one step for now, before returning control to the event loop. Let
678 the continuation figure out how many other steps we need to do,
679 and handle them one at the time, through step_once(). */
682 if (event_loop_p
&& target_can_async_p ())
683 step_once (skip_subroutines
, single_inst
, count
);
687 /* Called after we are done with one step operation, to check whether
688 we need to step again, before we print the prompt and return control
689 to the user. If count is > 1, we will need to do one more call to
690 proceed(), via step_once(). Basically it is like step_once and
691 step_1_continuation are co-recursive. */
693 step_1_continuation (struct continuation_arg
*arg
)
696 int skip_subroutines
;
699 skip_subroutines
= arg
->data
.integer
;
700 single_inst
= arg
->next
->data
.integer
;
701 count
= arg
->next
->next
->data
.integer
;
705 /* FIXME: On nexti, this may have already been done (when we hit the
706 step resume break, I think). Probably this should be moved to
707 wait_for_inferior (near the top). */
708 #if defined (SHIFT_INST_REGS)
711 step_once (skip_subroutines
, single_inst
, count
- 1);
714 if (!single_inst
|| skip_subroutines
)
715 do_exec_cleanups (ALL_CLEANUPS
);
718 /* Do just one step operation. If count >1 we will have to set up a
719 continuation to be done after the target stops (after this one
720 step). This is useful to implement the 'step n' kind of commands, in
721 case of asynchronous targets. We had to split step_1 into two parts,
722 one to be done before proceed() and one afterwards. This function is
723 called in case of step n with n>1, after the first step operation has
726 step_once (int skip_subroutines
, int single_inst
, int count
)
728 struct continuation_arg
*arg1
;
729 struct continuation_arg
*arg2
;
730 struct continuation_arg
*arg3
;
731 struct frame_info
*frame
;
735 clear_proceed_status ();
737 frame
= get_current_frame ();
738 if (!frame
) /* Avoid coredump here. Why tho? */
739 error ("No current frame");
740 step_frame_id
= get_frame_id (frame
);
741 step_sp
= read_sp ();
745 find_pc_line_pc_range (stop_pc
, &step_range_start
, &step_range_end
);
747 /* If we have no line info, switch to stepi mode. */
748 if (step_range_end
== 0 && step_stop_if_no_debug
)
750 step_range_start
= step_range_end
= 1;
752 else if (step_range_end
== 0)
755 if (find_pc_partial_function (stop_pc
, &name
, &step_range_start
,
756 &step_range_end
) == 0)
757 error ("Cannot find bounds of current function");
759 target_terminal_ours ();
761 Single stepping until exit from function %s, \n\
762 which has no line number information.\n", name
);
767 /* Say we are stepping, but stop after one insn whatever it does. */
768 step_range_start
= step_range_end
= 1;
769 if (!skip_subroutines
)
771 Don't step over function calls, not even to functions lacking
773 step_over_calls
= STEP_OVER_NONE
;
776 if (skip_subroutines
)
777 step_over_calls
= STEP_OVER_ALL
;
779 step_multi
= (count
> 1);
781 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
783 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
785 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
787 arg1
->data
.integer
= skip_subroutines
;
789 arg2
->data
.integer
= single_inst
;
791 arg3
->data
.integer
= count
;
792 add_intermediate_continuation (step_1_continuation
, arg1
);
793 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
798 /* Continue program at specified address. */
801 jump_command (char *arg
, int from_tty
)
804 struct symtabs_and_lines sals
;
805 struct symtab_and_line sal
;
812 /* Find out whether we must run in the background. */
814 async_exec
= strip_bg_char (&arg
);
816 /* If we must run in the background, but the target can't do it,
818 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
819 error ("Asynchronous execution not supported on this target.");
821 /* If we are not asked to run in the bg, then prepare to run in the
822 foreground, synchronously. */
823 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
825 /* Simulate synchronous execution */
826 async_disable_stdin ();
830 error_no_arg ("starting address");
832 sals
= decode_line_spec_1 (arg
, 1);
835 error ("Unreasonable jump request");
841 if (sal
.symtab
== 0 && sal
.pc
== 0)
842 error ("No source file has been specified.");
844 resolve_sal_pc (&sal
); /* May error out */
846 /* See if we are trying to jump to another function. */
847 fn
= get_frame_function (get_current_frame ());
848 sfn
= find_pc_function (sal
.pc
);
849 if (fn
!= NULL
&& sfn
!= fn
)
851 if (!query ("Line %d is not in `%s'. Jump anyway? ", sal
.line
,
852 SYMBOL_PRINT_NAME (fn
)))
854 error ("Not confirmed.");
861 fixup_symbol_section (sfn
, 0);
862 if (section_is_overlay (SYMBOL_BFD_SECTION (sfn
)) &&
863 !section_is_mapped (SYMBOL_BFD_SECTION (sfn
)))
865 if (!query ("WARNING!!! Destination is in unmapped overlay! Jump anyway? "))
867 error ("Not confirmed.");
877 printf_filtered ("Continuing at ");
878 print_address_numeric (addr
, 1, gdb_stdout
);
879 printf_filtered (".\n");
882 clear_proceed_status ();
883 proceed (addr
, TARGET_SIGNAL_0
, 0);
887 /* Go to line or address in current procedure */
889 go_command (char *line_no
, int from_tty
)
891 if (line_no
== (char *) NULL
|| !*line_no
)
892 printf_filtered (GO_USAGE
);
895 tbreak_command (line_no
, from_tty
);
896 jump_command (line_no
, from_tty
);
901 /* Continue program giving it specified signal. */
904 signal_command (char *signum_exp
, int from_tty
)
906 enum target_signal oursig
;
908 dont_repeat (); /* Too dangerous. */
912 error_no_arg ("signal number");
914 /* It would be even slicker to make signal names be valid expressions,
915 (the type could be "enum $signal" or some such), then the user could
916 assign them to convenience variables. */
917 oursig
= target_signal_from_name (signum_exp
);
919 if (oursig
== TARGET_SIGNAL_UNKNOWN
)
921 /* No, try numeric. */
922 int num
= parse_and_eval_long (signum_exp
);
925 oursig
= TARGET_SIGNAL_0
;
927 oursig
= target_signal_from_command (num
);
932 if (oursig
== TARGET_SIGNAL_0
)
933 printf_filtered ("Continuing with no signal.\n");
935 printf_filtered ("Continuing with signal %s.\n",
936 target_signal_to_name (oursig
));
939 clear_proceed_status ();
940 /* "signal 0" should not get stuck if we are stopped at a breakpoint.
941 FIXME: Neither should "signal foo" but when I tried passing
942 (CORE_ADDR)-1 unconditionally I got a testsuite failure which I haven't
943 tried to track down yet. */
944 proceed (oursig
== TARGET_SIGNAL_0
? (CORE_ADDR
) -1 : stop_pc
, oursig
, 0);
947 /* Proceed until we reach a different source line with pc greater than
948 our current one or exit the function. We skip calls in both cases.
950 Note that eventually this command should probably be changed so
951 that only source lines are printed out when we hit the breakpoint
952 we set. This may involve changes to wait_for_inferior and the
953 proceed status code. */
956 until_next_command (int from_tty
)
958 struct frame_info
*frame
;
961 struct symtab_and_line sal
;
963 clear_proceed_status ();
965 frame
= get_current_frame ();
967 /* Step until either exited from this function or greater
968 than the current line (if in symbolic section) or pc (if
972 func
= find_pc_function (pc
);
976 struct minimal_symbol
*msymbol
= lookup_minimal_symbol_by_pc (pc
);
979 error ("Execution is not within a known function.");
981 step_range_start
= SYMBOL_VALUE_ADDRESS (msymbol
);
986 sal
= find_pc_line (pc
, 0);
988 step_range_start
= BLOCK_START (SYMBOL_BLOCK_VALUE (func
));
989 step_range_end
= sal
.end
;
992 step_over_calls
= STEP_OVER_ALL
;
993 step_frame_id
= get_frame_id (frame
);
994 step_sp
= read_sp ();
996 step_multi
= 0; /* Only one call to proceed */
998 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
1002 until_command (char *arg
, int from_tty
)
1006 if (!target_has_execution
)
1007 error ("The program is not running.");
1009 /* Find out whether we must run in the background. */
1011 async_exec
= strip_bg_char (&arg
);
1013 /* If we must run in the background, but the target can't do it,
1015 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
1016 error ("Asynchronous execution not supported on this target.");
1018 /* If we are not asked to run in the bg, then prepare to run in the
1019 foreground, synchronously. */
1020 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
1022 /* Simulate synchronous execution */
1023 async_disable_stdin ();
1027 until_break_command (arg
, from_tty
, 0);
1029 until_next_command (from_tty
);
1033 advance_command (char *arg
, int from_tty
)
1037 if (!target_has_execution
)
1038 error ("The program is not running.");
1041 error_no_arg ("a location");
1043 /* Find out whether we must run in the background. */
1045 async_exec
= strip_bg_char (&arg
);
1047 /* If we must run in the background, but the target can't do it,
1049 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
1050 error ("Asynchronous execution not supported on this target.");
1052 /* If we are not asked to run in the bg, then prepare to run in the
1053 foreground, synchronously. */
1054 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
1056 /* Simulate synchronous execution. */
1057 async_disable_stdin ();
1060 until_break_command (arg
, from_tty
, 1);
1064 /* Print the result of a function at the end of a 'finish' command. */
1066 print_return_value (int structure_return
, struct type
*value_type
)
1068 struct value
*value
;
1069 static struct ui_stream
*stb
= NULL
;
1071 if (!structure_return
)
1073 value
= register_value_being_returned (value_type
, stop_registers
);
1074 stb
= ui_out_stream_new (uiout
);
1075 ui_out_text (uiout
, "Value returned is ");
1076 ui_out_field_fmt (uiout
, "gdb-result-var", "$%d", record_latest_value (value
));
1077 ui_out_text (uiout
, " = ");
1078 value_print (value
, stb
->stream
, 0, Val_no_prettyprint
);
1079 ui_out_field_stream (uiout
, "return-value", stb
);
1080 ui_out_text (uiout
, "\n");
1084 /* FIXME: 2003-09-27: When returning from a nested inferior
1085 function call, it's possible (with no help from the
1086 architecture vector) to locate and return/print a "struct
1087 return" value. This is just a more complicated case of what
1088 is already being done in in the inferior function call code.
1089 In fact, when inferior function calls are made async, this
1090 will likely be made the norm. */
1091 /* We cannot determine the contents of the structure because
1092 it is on the stack, and we don't know where, since we did not
1093 initiate the call, as opposed to the call_function_by_hand case */
1094 #ifdef DEPRECATED_VALUE_RETURNED_FROM_STACK
1096 ui_out_text (uiout
, "Value returned has type: ");
1097 ui_out_field_string (uiout
, "return-type", TYPE_NAME (value_type
));
1098 ui_out_text (uiout
, ".");
1099 ui_out_text (uiout
, " Cannot determine contents\n");
1101 if (EXTRACT_STRUCT_VALUE_ADDRESS_P ())
1103 CORE_ADDR addr
= EXTRACT_STRUCT_VALUE_ADDRESS (stop_registers
);
1105 error ("Function return value unknown.");
1106 value
= value_at (value_type
, addr
, NULL
);
1108 else if (DEPRECATED_EXTRACT_STRUCT_VALUE_ADDRESS_P ())
1110 char *buf
= deprecated_grub_regcache_for_registers (stop_registers
);
1111 CORE_ADDR addr
= DEPRECATED_EXTRACT_STRUCT_VALUE_ADDRESS (buf
);
1113 error ("Function return value unknown.");
1114 value
= value_at (value_type
, addr
, NULL
);
1118 /* It is "struct return" yet the value is being extracted,
1119 presumably from registers, using EXTRACT_RETURN_VALUE.
1120 This doesn't make sense. Unfortunatly, the legacy
1121 interfaces allowed this behavior. Sigh! */
1122 value
= allocate_value (value_type
);
1123 CHECK_TYPEDEF (value_type
);
1124 /* If the function returns void, don't bother fetching the
1126 EXTRACT_RETURN_VALUE (value_type
, stop_registers
,
1127 VALUE_CONTENTS_RAW (value
));
1129 stb
= ui_out_stream_new (uiout
);
1130 ui_out_text (uiout
, "Value returned is ");
1131 ui_out_field_fmt (uiout
, "gdb-result-var", "$%d", record_latest_value (value
));
1132 ui_out_text (uiout
, " = ");
1133 value_print (value
, stb
->stream
, 0, Val_no_prettyprint
);
1134 ui_out_field_stream (uiout
, "return-value", stb
);
1135 ui_out_text (uiout
, "\n");
1140 /* Stuff that needs to be done by the finish command after the target
1141 has stopped. In asynchronous mode, we wait for the target to stop in
1142 the call to poll or select in the event loop, so it is impossible to
1143 do all the stuff as part of the finish_command function itself. The
1144 only chance we have to complete this command is in
1145 fetch_inferior_event, which is called by the event loop as soon as it
1146 detects that the target has stopped. This function is called via the
1147 cmd_continuation pointer. */
1149 finish_command_continuation (struct continuation_arg
*arg
)
1151 struct symbol
*function
;
1152 struct breakpoint
*breakpoint
;
1153 struct cleanup
*cleanups
;
1155 breakpoint
= (struct breakpoint
*) arg
->data
.pointer
;
1156 function
= (struct symbol
*) arg
->next
->data
.pointer
;
1157 cleanups
= (struct cleanup
*) arg
->next
->next
->data
.pointer
;
1159 if (bpstat_find_breakpoint (stop_bpstat
, breakpoint
) != NULL
1162 struct type
*value_type
;
1166 value_type
= TYPE_TARGET_TYPE (SYMBOL_TYPE (function
));
1168 internal_error (__FILE__
, __LINE__
,
1169 "finish_command: function has no target type");
1171 if (TYPE_CODE (value_type
) == TYPE_CODE_VOID
)
1173 do_exec_cleanups (cleanups
);
1177 funcaddr
= BLOCK_START (SYMBOL_BLOCK_VALUE (function
));
1179 struct_return
= using_struct_return (check_typedef (value_type
),
1180 BLOCK_GCC_COMPILED (SYMBOL_BLOCK_VALUE (function
)));
1182 print_return_value (struct_return
, value_type
);
1184 do_exec_cleanups (cleanups
);
1187 /* "finish": Set a temporary breakpoint at the place
1188 the selected frame will return to, then continue. */
1191 finish_command (char *arg
, int from_tty
)
1193 struct symtab_and_line sal
;
1194 struct frame_info
*frame
;
1195 struct symbol
*function
;
1196 struct breakpoint
*breakpoint
;
1197 struct cleanup
*old_chain
;
1198 struct continuation_arg
*arg1
, *arg2
, *arg3
;
1202 /* Find out whether we must run in the background. */
1204 async_exec
= strip_bg_char (&arg
);
1206 /* If we must run in the background, but the target can't do it,
1208 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
1209 error ("Asynchronous execution not supported on this target.");
1211 /* If we are not asked to run in the bg, then prepare to run in the
1212 foreground, synchronously. */
1213 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
1215 /* Simulate synchronous execution */
1216 async_disable_stdin ();
1220 error ("The \"finish\" command does not take any arguments.");
1221 if (!target_has_execution
)
1222 error ("The program is not running.");
1223 if (deprecated_selected_frame
== NULL
)
1224 error ("No selected frame.");
1226 frame
= get_prev_frame (deprecated_selected_frame
);
1228 error ("\"finish\" not meaningful in the outermost frame.");
1230 clear_proceed_status ();
1232 sal
= find_pc_line (get_frame_pc (frame
), 0);
1233 sal
.pc
= get_frame_pc (frame
);
1235 breakpoint
= set_momentary_breakpoint (sal
, get_frame_id (frame
), bp_finish
);
1237 if (!event_loop_p
|| !target_can_async_p ())
1238 old_chain
= make_cleanup_delete_breakpoint (breakpoint
);
1240 old_chain
= make_exec_cleanup_delete_breakpoint (breakpoint
);
1242 /* Find the function we will return from. */
1244 function
= find_pc_function (get_frame_pc (deprecated_selected_frame
));
1246 /* Print info on the selected frame, including level number
1250 printf_filtered ("Run till exit from ");
1251 print_stack_frame (deprecated_selected_frame
,
1252 frame_relative_level (deprecated_selected_frame
), 0);
1255 /* If running asynchronously and the target support asynchronous
1256 execution, set things up for the rest of the finish command to be
1257 completed later on, when gdb has detected that the target has
1258 stopped, in fetch_inferior_event. */
1259 if (event_loop_p
&& target_can_async_p ())
1262 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
1264 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
1266 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
1270 arg1
->data
.pointer
= breakpoint
;
1271 arg2
->data
.pointer
= function
;
1272 arg3
->data
.pointer
= old_chain
;
1273 add_continuation (finish_command_continuation
, arg1
);
1276 proceed_to_finish
= 1; /* We want stop_registers, please... */
1277 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
1279 /* Do this only if not running asynchronously or if the target
1280 cannot do async execution. Otherwise, complete this command when
1281 the target actually stops, in fetch_inferior_event. */
1282 if (!event_loop_p
|| !target_can_async_p ())
1285 /* Did we stop at our breakpoint? */
1286 if (bpstat_find_breakpoint (stop_bpstat
, breakpoint
) != NULL
1289 struct type
*value_type
;
1293 value_type
= TYPE_TARGET_TYPE (SYMBOL_TYPE (function
));
1295 internal_error (__FILE__
, __LINE__
,
1296 "finish_command: function has no target type");
1298 /* FIXME: Shouldn't we do the cleanups before returning? */
1299 if (TYPE_CODE (value_type
) == TYPE_CODE_VOID
)
1302 funcaddr
= BLOCK_START (SYMBOL_BLOCK_VALUE (function
));
1305 using_struct_return (check_typedef (value_type
),
1306 BLOCK_GCC_COMPILED (SYMBOL_BLOCK_VALUE (function
)));
1308 print_return_value (struct_return
, value_type
);
1310 do_cleanups (old_chain
);
1315 program_info (char *args
, int from_tty
)
1317 bpstat bs
= stop_bpstat
;
1318 int num
= bpstat_num (&bs
);
1320 if (!target_has_execution
)
1322 printf_filtered ("The program being debugged is not being run.\n");
1326 target_files_info ();
1327 printf_filtered ("Program stopped at %s.\n",
1328 local_hex_string ((unsigned long) stop_pc
));
1330 printf_filtered ("It stopped after being stepped.\n");
1333 /* There may be several breakpoints in the same place, so this
1334 isn't as strange as it seems. */
1339 printf_filtered ("It stopped at a breakpoint that has ");
1340 printf_filtered ("since been deleted.\n");
1343 printf_filtered ("It stopped at breakpoint %d.\n", num
);
1344 num
= bpstat_num (&bs
);
1347 else if (stop_signal
!= TARGET_SIGNAL_0
)
1349 printf_filtered ("It stopped with signal %s, %s.\n",
1350 target_signal_to_name (stop_signal
),
1351 target_signal_to_string (stop_signal
));
1356 printf_filtered ("Type \"info stack\" or \"info registers\" ");
1357 printf_filtered ("for more information.\n");
1362 environment_info (char *var
, int from_tty
)
1366 char *val
= get_in_environ (inferior_environ
, var
);
1369 puts_filtered (var
);
1370 puts_filtered (" = ");
1371 puts_filtered (val
);
1372 puts_filtered ("\n");
1376 puts_filtered ("Environment variable \"");
1377 puts_filtered (var
);
1378 puts_filtered ("\" not defined.\n");
1383 char **vector
= environ_vector (inferior_environ
);
1386 puts_filtered (*vector
++);
1387 puts_filtered ("\n");
1393 set_environment_command (char *arg
, int from_tty
)
1395 char *p
, *val
, *var
;
1399 error_no_arg ("environment variable and value");
1401 /* Find seperation between variable name and value */
1402 p
= (char *) strchr (arg
, '=');
1403 val
= (char *) strchr (arg
, ' ');
1405 if (p
!= 0 && val
!= 0)
1407 /* We have both a space and an equals. If the space is before the
1408 equals, walk forward over the spaces til we see a nonspace
1409 (possibly the equals). */
1414 /* Now if the = is after the char following the spaces,
1415 take the char following the spaces. */
1419 else if (val
!= 0 && p
== 0)
1423 error_no_arg ("environment variable to set");
1425 if (p
== 0 || p
[1] == 0)
1429 p
= arg
+ strlen (arg
); /* So that savestring below will work */
1433 /* Not setting variable value to null */
1435 while (*val
== ' ' || *val
== '\t')
1439 while (p
!= arg
&& (p
[-1] == ' ' || p
[-1] == '\t'))
1442 var
= savestring (arg
, p
- arg
);
1445 printf_filtered ("Setting environment variable ");
1446 printf_filtered ("\"%s\" to null value.\n", var
);
1447 set_in_environ (inferior_environ
, var
, "");
1450 set_in_environ (inferior_environ
, var
, val
);
1455 unset_environment_command (char *var
, int from_tty
)
1459 /* If there is no argument, delete all environment variables.
1460 Ask for confirmation if reading from the terminal. */
1461 if (!from_tty
|| query ("Delete all environment variables? "))
1463 free_environ (inferior_environ
);
1464 inferior_environ
= make_environ ();
1468 unset_in_environ (inferior_environ
, var
);
1471 /* Handle the execution path (PATH variable) */
1473 static const char path_var_name
[] = "PATH";
1476 path_info (char *args
, int from_tty
)
1478 puts_filtered ("Executable and object file path: ");
1479 puts_filtered (get_in_environ (inferior_environ
, path_var_name
));
1480 puts_filtered ("\n");
1483 /* Add zero or more directories to the front of the execution path. */
1486 path_command (char *dirname
, int from_tty
)
1491 env
= get_in_environ (inferior_environ
, path_var_name
);
1492 /* Can be null if path is not set */
1495 exec_path
= xstrdup (env
);
1496 mod_path (dirname
, &exec_path
);
1497 set_in_environ (inferior_environ
, path_var_name
, exec_path
);
1500 path_info ((char *) NULL
, from_tty
);
1504 /* Print out the machine register regnum. If regnum is -1, print all
1505 registers (print_all == 1) or all non-float and non-vector
1506 registers (print_all == 0).
1508 For most machines, having all_registers_info() print the
1509 register(s) one per line is good enough. If a different format is
1510 required, (eg, for MIPS or Pyramid 90x, which both have lots of
1511 regs), or there is an existing convention for showing all the
1512 registers, define the architecture method PRINT_REGISTERS_INFO to
1513 provide that format. */
1516 default_print_registers_info (struct gdbarch
*gdbarch
,
1517 struct ui_file
*file
,
1518 struct frame_info
*frame
,
1519 int regnum
, int print_all
)
1522 const int numregs
= NUM_REGS
+ NUM_PSEUDO_REGS
;
1523 char raw_buffer
[MAX_REGISTER_SIZE
];
1524 char virtual_buffer
[MAX_REGISTER_SIZE
];
1526 if (DEPRECATED_DO_REGISTERS_INFO_P ())
1528 DEPRECATED_DO_REGISTERS_INFO (regnum
, print_all
);
1532 for (i
= 0; i
< numregs
; i
++)
1534 /* Decide between printing all regs, non-float / vector regs, or
1540 if (!gdbarch_register_reggroup_p (gdbarch
, i
, all_reggroup
))
1545 if (!gdbarch_register_reggroup_p (gdbarch
, i
, general_reggroup
))
1555 /* If the register name is empty, it is undefined for this
1556 processor, so don't display anything. */
1557 if (REGISTER_NAME (i
) == NULL
|| *(REGISTER_NAME (i
)) == '\0')
1560 fputs_filtered (REGISTER_NAME (i
), file
);
1561 print_spaces_filtered (15 - strlen (REGISTER_NAME (i
)), file
);
1563 /* Get the data in raw format. */
1564 if (! frame_register_read (frame
, i
, raw_buffer
))
1566 fprintf_filtered (file
, "*value not available*\n");
1570 /* FIXME: cagney/2002-08-03: This code shouldn't be necessary.
1571 The function frame_register_read() should have returned the
1572 pre-cooked register so no conversion is necessary. */
1573 /* Convert raw data to virtual format if necessary. */
1574 if (DEPRECATED_REGISTER_CONVERTIBLE (i
))
1576 DEPRECATED_REGISTER_CONVERT_TO_VIRTUAL (i
, register_type (current_gdbarch
, i
),
1577 raw_buffer
, virtual_buffer
);
1581 memcpy (virtual_buffer
, raw_buffer
,
1582 DEPRECATED_REGISTER_VIRTUAL_SIZE (i
));
1585 /* If virtual format is floating, print it that way, and in raw
1587 if (TYPE_CODE (register_type (current_gdbarch
, i
)) == TYPE_CODE_FLT
)
1591 val_print (register_type (current_gdbarch
, i
), virtual_buffer
, 0, 0,
1592 file
, 0, 1, 0, Val_pretty_default
);
1594 fprintf_filtered (file
, "\t(raw 0x");
1595 for (j
= 0; j
< DEPRECATED_REGISTER_RAW_SIZE (i
); j
++)
1598 if (TARGET_BYTE_ORDER
== BFD_ENDIAN_BIG
)
1601 idx
= DEPRECATED_REGISTER_RAW_SIZE (i
) - 1 - j
;
1602 fprintf_filtered (file
, "%02x", (unsigned char) raw_buffer
[idx
]);
1604 fprintf_filtered (file
, ")");
1608 /* Print the register in hex. */
1609 val_print (register_type (current_gdbarch
, i
), virtual_buffer
, 0, 0,
1610 file
, 'x', 1, 0, Val_pretty_default
);
1611 /* If not a vector register, print it also according to its
1613 if (TYPE_VECTOR (register_type (current_gdbarch
, i
)) == 0)
1615 fprintf_filtered (file
, "\t");
1616 val_print (register_type (current_gdbarch
, i
), virtual_buffer
, 0, 0,
1617 file
, 0, 1, 0, Val_pretty_default
);
1621 fprintf_filtered (file
, "\n");
1626 registers_info (char *addr_exp
, int fpregs
)
1628 int regnum
, numregs
;
1631 if (!target_has_registers
)
1632 error ("The program has no registers now.");
1633 if (deprecated_selected_frame
== NULL
)
1634 error ("No selected frame.");
1638 gdbarch_print_registers_info (current_gdbarch
, gdb_stdout
,
1639 deprecated_selected_frame
, -1, fpregs
);
1643 while (*addr_exp
!= '\0')
1648 /* Keep skipping leading white space. */
1649 if (isspace ((*addr_exp
)))
1655 /* Discard any leading ``$''. Check that there is something
1656 resembling a register following it. */
1657 if (addr_exp
[0] == '$')
1659 if (isspace ((*addr_exp
)) || (*addr_exp
) == '\0')
1660 error ("Missing register name");
1662 /* Find the start/end of this register name/num/group. */
1664 while ((*addr_exp
) != '\0' && !isspace ((*addr_exp
)))
1668 /* Figure out what we've found and display it. */
1670 /* A register name? */
1672 int regnum
= frame_map_name_to_regnum (deprecated_selected_frame
,
1673 start
, end
- start
);
1676 gdbarch_print_registers_info (current_gdbarch
, gdb_stdout
,
1677 deprecated_selected_frame
, regnum
, fpregs
);
1682 /* A register number? (how portable is this one?). */
1685 int regnum
= strtol (start
, &endptr
, 0);
1688 && regnum
< NUM_REGS
+ NUM_PSEUDO_REGS
)
1690 gdbarch_print_registers_info (current_gdbarch
, gdb_stdout
,
1691 deprecated_selected_frame
, regnum
, fpregs
);
1696 /* A register group? */
1698 struct reggroup
*group
;
1699 for (group
= reggroup_next (current_gdbarch
, NULL
);
1701 group
= reggroup_next (current_gdbarch
, group
))
1703 /* Don't bother with a length check. Should the user
1704 enter a short register group name, go with the first
1705 group that matches. */
1706 if (strncmp (start
, reggroup_name (group
), end
- start
) == 0)
1712 for (regnum
= 0; regnum
< NUM_REGS
+ NUM_PSEUDO_REGS
; regnum
++)
1714 if (gdbarch_register_reggroup_p (current_gdbarch
, regnum
,
1716 gdbarch_print_registers_info (current_gdbarch
,
1717 gdb_stdout
, deprecated_selected_frame
,
1724 /* Nothing matched. */
1725 error ("Invalid register `%.*s'", (int) (end
- start
), start
);
1730 all_registers_info (char *addr_exp
, int from_tty
)
1732 registers_info (addr_exp
, 1);
1736 nofp_registers_info (char *addr_exp
, int from_tty
)
1738 registers_info (addr_exp
, 0);
1742 print_vector_info (struct gdbarch
*gdbarch
, struct ui_file
*file
,
1743 struct frame_info
*frame
, const char *args
)
1745 if (!target_has_registers
)
1746 error ("The program has no registers now.");
1747 if (deprecated_selected_frame
== NULL
)
1748 error ("No selected frame.");
1750 if (gdbarch_print_vector_info_p (gdbarch
))
1751 gdbarch_print_vector_info (gdbarch
, file
, frame
, args
);
1755 int printed_something
= 0;
1757 for (regnum
= 0; regnum
< NUM_REGS
+ NUM_PSEUDO_REGS
; regnum
++)
1759 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, vector_reggroup
))
1761 printed_something
= 1;
1762 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
1765 if (!printed_something
)
1766 fprintf_filtered (file
, "No vector information\n");
1771 vector_info (char *args
, int from_tty
)
1773 print_vector_info (current_gdbarch
, gdb_stdout
, deprecated_selected_frame
, args
);
1779 * Should save/restore the tty state since it might be that the
1780 * program to be debugged was started on this tty and it wants
1781 * the tty in some state other than what we want. If it's running
1782 * on another terminal or without a terminal, then saving and
1783 * restoring the tty state is a harmless no-op.
1784 * This only needs to be done if we are attaching to a process.
1789 takes a program started up outside of gdb and ``attaches'' to it.
1790 This stops it cold in its tracks and allows us to start debugging it.
1791 and wait for the trace-trap that results from attaching. */
1794 attach_command (char *args
, int from_tty
)
1797 char *full_exec_path
= NULL
;
1799 dont_repeat (); /* Not for the faint of heart */
1801 if (target_has_execution
)
1803 if (query ("A program is being debugged already. Kill it? "))
1806 error ("Not killed.");
1809 target_attach (args
, from_tty
);
1811 /* Set up the "saved terminal modes" of the inferior
1812 based on what modes we are starting it with. */
1813 target_terminal_init ();
1815 /* Install inferior's terminal modes. */
1816 target_terminal_inferior ();
1818 /* Set up execution context to know that we should return from
1819 wait_for_inferior as soon as the target reports a stop. */
1820 init_wait_for_inferior ();
1821 clear_proceed_status ();
1823 /* No traps are generated when attaching to inferior under Mach 3
1825 #ifndef ATTACH_NO_WAIT
1826 /* Careful here. See comments in inferior.h. Basically some OSes
1827 don't ignore SIGSTOPs on continue requests anymore. We need a
1828 way for handle_inferior_event to reset the stop_signal variable
1829 after an attach, and this is what STOP_QUIETLY_NO_SIGSTOP is for. */
1830 stop_soon
= STOP_QUIETLY_NO_SIGSTOP
;
1831 wait_for_inferior ();
1832 stop_soon
= NO_STOP_QUIETLY
;
1836 * If no exec file is yet known, try to determine it from the
1839 exec_file
= (char *) get_exec_file (0);
1842 exec_file
= target_pid_to_exec_file (PIDGET (inferior_ptid
));
1845 /* It's possible we don't have a full path, but rather just a
1846 filename. Some targets, such as HP-UX, don't provide the
1849 Attempt to qualify the filename against the source path.
1850 (If that fails, we'll just fall back on the original
1851 filename. Not much more we can do...)
1853 if (!source_full_path_of (exec_file
, &full_exec_path
))
1854 full_exec_path
= savestring (exec_file
, strlen (exec_file
));
1856 exec_file_attach (full_exec_path
, from_tty
);
1857 symbol_file_add_main (full_exec_path
, from_tty
);
1862 /* Add shared library symbols from the newly attached process, if any. */
1863 SOLIB_ADD ((char *) 0, from_tty
, ¤t_target
, auto_solib_add
);
1864 re_enable_breakpoints_in_shlibs ();
1867 /* Take any necessary post-attaching actions for this platform.
1869 target_post_attach (PIDGET (inferior_ptid
));
1879 * takes a program previously attached to and detaches it.
1880 * The program resumes execution and will no longer stop
1881 * on signals, etc. We better not have left any breakpoints
1882 * in the program or it'll die when it hits one. For this
1883 * to work, it may be necessary for the process to have been
1884 * previously attached. It *might* work if the program was
1885 * started via the normal ptrace (PTRACE_TRACEME).
1889 detach_command (char *args
, int from_tty
)
1891 dont_repeat (); /* Not for the faint of heart */
1892 target_detach (args
, from_tty
);
1893 #if defined(SOLIB_RESTART)
1900 /* Disconnect from the current target without resuming it (leaving it
1901 waiting for a debugger).
1903 We'd better not have left any breakpoints in the program or the
1904 next debugger will get confused. Currently only supported for some
1905 remote targets, since the normal attach mechanisms don't work on
1906 stopped processes on some native platforms (e.g. GNU/Linux). */
1909 disconnect_command (char *args
, int from_tty
)
1911 dont_repeat (); /* Not for the faint of heart */
1912 target_disconnect (args
, from_tty
);
1913 #if defined(SOLIB_RESTART)
1920 /* Stop the execution of the target while running in async mode, in
1923 interrupt_target_command (char *args
, int from_tty
)
1925 if (event_loop_p
&& target_can_async_p ())
1927 dont_repeat (); /* Not for the faint of heart */
1933 print_float_info (struct gdbarch
*gdbarch
, struct ui_file
*file
,
1934 struct frame_info
*frame
, const char *args
)
1936 if (!target_has_registers
)
1937 error ("The program has no registers now.");
1938 if (deprecated_selected_frame
== NULL
)
1939 error ("No selected frame.");
1941 if (gdbarch_print_float_info_p (gdbarch
))
1942 gdbarch_print_float_info (gdbarch
, file
, frame
, args
);
1946 int printed_something
= 0;
1948 for (regnum
= 0; regnum
< NUM_REGS
+ NUM_PSEUDO_REGS
; regnum
++)
1950 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, float_reggroup
))
1952 printed_something
= 1;
1953 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
1956 if (!printed_something
)
1957 fprintf_filtered (file
, "\
1958 No floating-point info available for this processor.\n");
1963 float_info (char *args
, int from_tty
)
1965 print_float_info (current_gdbarch
, gdb_stdout
, deprecated_selected_frame
, args
);
1969 unset_command (char *args
, int from_tty
)
1971 printf_filtered ("\"unset\" must be followed by the name of ");
1972 printf_filtered ("an unset subcommand.\n");
1973 help_list (unsetlist
, "unset ", -1, gdb_stdout
);
1977 _initialize_infcmd (void)
1979 struct cmd_list_element
*c
;
1981 c
= add_com ("tty", class_run
, tty_command
,
1982 "Set terminal for future runs of program being debugged.");
1983 set_cmd_completer (c
, filename_completer
);
1985 c
= add_set_cmd ("args", class_run
, var_string_noescape
,
1986 (char *) &inferior_args
,
1987 "Set argument list to give program being debugged when it is started.\n\
1988 Follow this command with any number of args, to be passed to the program.",
1990 set_cmd_completer (c
, filename_completer
);
1991 set_cmd_sfunc (c
, notice_args_set
);
1992 c
= add_show_from_set (c
, &showlist
);
1993 set_cmd_sfunc (c
, notice_args_read
);
1996 ("environment", no_class
, environment_info
,
1997 "The environment to give the program, or one variable's value.\n\
1998 With an argument VAR, prints the value of environment variable VAR to\n\
1999 give the program being debugged. With no arguments, prints the entire\n\
2000 environment to be given to the program.", &showlist
);
2001 set_cmd_completer (c
, noop_completer
);
2003 add_prefix_cmd ("unset", no_class
, unset_command
,
2004 "Complement to certain \"set\" commands.",
2005 &unsetlist
, "unset ", 0, &cmdlist
);
2007 c
= add_cmd ("environment", class_run
, unset_environment_command
,
2008 "Cancel environment variable VAR for the program.\n\
2009 This does not affect the program until the next \"run\" command.",
2011 set_cmd_completer (c
, noop_completer
);
2013 c
= add_cmd ("environment", class_run
, set_environment_command
,
2014 "Set environment variable value to give the program.\n\
2015 Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\
2016 VALUES of environment variables are uninterpreted strings.\n\
2017 This does not affect the program until the next \"run\" command.",
2019 set_cmd_completer (c
, noop_completer
);
2021 c
= add_com ("path", class_files
, path_command
,
2022 "Add directory DIR(s) to beginning of search path for object files.\n\
2023 $cwd in the path means the current working directory.\n\
2024 This path is equivalent to the $PATH shell variable. It is a list of\n\
2025 directories, separated by colons. These directories are searched to find\n\
2026 fully linked executable files and separately compiled object files as needed.");
2027 set_cmd_completer (c
, filename_completer
);
2029 c
= add_cmd ("paths", no_class
, path_info
,
2030 "Current search path for finding object files.\n\
2031 $cwd in the path means the current working directory.\n\
2032 This path is equivalent to the $PATH shell variable. It is a list of\n\
2033 directories, separated by colons. These directories are searched to find\n\
2034 fully linked executable files and separately compiled object files as needed.",
2036 set_cmd_completer (c
, noop_completer
);
2038 add_com ("attach", class_run
, attach_command
,
2039 "Attach to a process or file outside of GDB.\n\
2040 This command attaches to another target, of the same type as your last\n\
2041 \"target\" command (\"info files\" will show your target stack).\n\
2042 The command may take as argument a process id or a device file.\n\
2043 For a process id, you must have permission to send the process a signal,\n\
2044 and it must have the same effective uid as the debugger.\n\
2045 When using \"attach\" with a process id, the debugger finds the\n\
2046 program running in the process, looking first in the current working\n\
2047 directory, or (if not found there) using the source file search path\n\
2048 (see the \"directory\" command). You can also use the \"file\" command\n\
2049 to specify the program, and to load its symbol table.");
2051 add_com ("detach", class_run
, detach_command
,
2052 "Detach a process or file previously attached.\n\
2053 If a process, it is no longer traced, and it continues its execution. If\n\
2054 you were debugging a file, the file is closed and gdb no longer accesses it.");
2056 add_com ("disconnect", class_run
, disconnect_command
,
2057 "Disconnect from a target.\n\
2058 The target will wait for another debugger to connect. Not available for\n\
2061 add_com ("signal", class_run
, signal_command
,
2062 "Continue program giving it signal specified by the argument.\n\
2063 An argument of \"0\" means continue program without giving it a signal.");
2065 add_com ("stepi", class_run
, stepi_command
,
2066 "Step one instruction exactly.\n\
2067 Argument N means do this N times (or till program stops for another reason).");
2068 add_com_alias ("si", "stepi", class_alias
, 0);
2070 add_com ("nexti", class_run
, nexti_command
,
2071 "Step one instruction, but proceed through subroutine calls.\n\
2072 Argument N means do this N times (or till program stops for another reason).");
2073 add_com_alias ("ni", "nexti", class_alias
, 0);
2075 add_com ("finish", class_run
, finish_command
,
2076 "Execute until selected stack frame returns.\n\
2077 Upon return, the value returned is printed and put in the value history.");
2079 add_com ("next", class_run
, next_command
,
2080 "Step program, proceeding through subroutine calls.\n\
2081 Like the \"step\" command as long as subroutine calls do not happen;\n\
2082 when they do, the call is treated as one instruction.\n\
2083 Argument N means do this N times (or till program stops for another reason).");
2084 add_com_alias ("n", "next", class_run
, 1);
2086 add_com_alias ("S", "next", class_run
, 1);
2088 add_com ("step", class_run
, step_command
,
2089 "Step program until it reaches a different source line.\n\
2090 Argument N means do this N times (or till program stops for another reason).");
2091 add_com_alias ("s", "step", class_run
, 1);
2093 c
= add_com ("until", class_run
, until_command
,
2094 "Execute until the program reaches a source line greater than the current\n\
2095 or a specified location (same args as break command) within the current frame.");
2096 set_cmd_completer (c
, location_completer
);
2097 add_com_alias ("u", "until", class_run
, 1);
2099 c
= add_com ("advance", class_run
, advance_command
,
2100 "Continue the program up to the given location (same form as args for break command).\n\
2101 Execution will also stop upon exit from the current stack frame.");
2102 set_cmd_completer (c
, location_completer
);
2104 c
= add_com ("jump", class_run
, jump_command
,
2105 "Continue program being debugged at specified line or address.\n\
2106 Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\
2107 for an address to start at.");
2108 set_cmd_completer (c
, location_completer
);
2112 c
= add_com ("go", class_run
, go_command
,
2113 "Usage: go <location>\n\
2114 Continue program being debugged, stopping at specified line or \n\
2116 Give as argument either LINENUM or *ADDR, where ADDR is an \n\
2117 expression for an address to start at.\n\
2118 This command is a combination of tbreak and jump.");
2119 set_cmd_completer (c
, location_completer
);
2123 add_com_alias ("g", "go", class_run
, 1);
2125 add_com ("continue", class_run
, continue_command
,
2126 "Continue program being debugged, after signal or breakpoint.\n\
2127 If proceeding from breakpoint, a number N may be used as an argument,\n\
2128 which means to set the ignore count of that breakpoint to N - 1 (so that\n\
2129 the breakpoint won't break until the Nth time it is reached).");
2130 add_com_alias ("c", "cont", class_run
, 1);
2131 add_com_alias ("fg", "cont", class_run
, 1);
2133 c
= add_com ("run", class_run
, run_command
,
2134 "Start debugged program. You may specify arguments to give it.\n\
2135 Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\
2136 Input and output redirection with \">\", \"<\", or \">>\" are also allowed.\n\n\
2137 With no arguments, uses arguments last specified (with \"run\" or \"set args\").\n\
2138 To cancel previous arguments and run with no arguments,\n\
2139 use \"set args\" without arguments.");
2140 set_cmd_completer (c
, filename_completer
);
2141 add_com_alias ("r", "run", class_run
, 1);
2143 add_com ("R", class_run
, run_no_args_command
,
2144 "Start debugged program with no arguments.");
2146 add_com ("interrupt", class_run
, interrupt_target_command
,
2147 "Interrupt the execution of the debugged program.");
2149 add_info ("registers", nofp_registers_info
,
2150 "List of integer registers and their contents, for selected stack frame.\n\
2151 Register name as argument means describe only that register.");
2152 add_info_alias ("r", "registers", 1);
2155 add_com ("lr", class_info
, nofp_registers_info
,
2156 "List of integer registers and their contents, for selected stack frame.\n\
2157 Register name as argument means describe only that register.");
2158 add_info ("all-registers", all_registers_info
,
2159 "List of all registers and their contents, for selected stack frame.\n\
2160 Register name as argument means describe only that register.");
2162 add_info ("program", program_info
,
2163 "Execution status of the program.");
2165 add_info ("float", float_info
,
2166 "Print the status of the floating point unit\n");
2168 add_info ("vector", vector_info
,
2169 "Print the status of the vector unit\n");
2171 inferior_environ
= make_environ ();
2172 init_environ (inferior_environ
);