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 enum step_over_calls_kind step_over_calls
;
191 /* If stepping, nonzero means step count is > 1
192 so don't print frame next time inferior stops
193 if it stops due to stepping. */
197 /* Environment to use for running inferior,
198 in format described in environ.h. */
200 struct environ
*inferior_environ
;
202 /* Accessor routines. */
205 get_inferior_args (void)
207 if (inferior_argc
!= 0)
211 n
= gdbarch_construct_inferior_arguments (current_gdbarch
,
212 inferior_argc
, inferior_argv
);
213 old
= set_inferior_args (n
);
217 if (inferior_args
== NULL
)
218 inferior_args
= xstrdup ("");
220 return inferior_args
;
224 set_inferior_args (char *newargs
)
226 char *saved_args
= inferior_args
;
228 inferior_args
= newargs
;
236 set_inferior_args_vector (int argc
, char **argv
)
238 inferior_argc
= argc
;
239 inferior_argv
= argv
;
242 /* Notice when `set args' is run. */
244 notice_args_set (char *args
, int from_tty
, struct cmd_list_element
*c
)
250 /* Notice when `show args' is run. */
252 notice_args_read (char *args
, int from_tty
, struct cmd_list_element
*c
)
254 /* Might compute the value. */
255 get_inferior_args ();
259 /* Compute command-line string given argument vector. This does the
260 same shell processing as fork_inferior. */
262 construct_inferior_arguments (struct gdbarch
*gdbarch
, int argc
, char **argv
)
266 if (STARTUP_WITH_SHELL
)
268 /* This holds all the characters considered special to the
269 typical Unix shells. We include `^' because the SunOS
270 /bin/sh treats it as a synonym for `|'. */
271 char *special
= "\"!#$&*()\\|[]{}<>?'\"`~^; \t\n";
276 /* We over-compute the size. It shouldn't matter. */
277 for (i
= 0; i
< argc
; ++i
)
278 length
+= 2 * strlen (argv
[i
]) + 1 + 2 * (argv
[i
][0] == '\0');
280 result
= (char *) xmalloc (length
);
283 for (i
= 0; i
< argc
; ++i
)
288 /* Need to handle empty arguments specially. */
289 if (argv
[i
][0] == '\0')
296 for (cp
= argv
[i
]; *cp
; ++cp
)
298 if (strchr (special
, *cp
) != NULL
)
308 /* In this case we can't handle arguments that contain spaces,
309 tabs, or newlines -- see breakup_args(). */
313 for (i
= 0; i
< argc
; ++i
)
315 char *cp
= strchr (argv
[i
], ' ');
317 cp
= strchr (argv
[i
], '\t');
319 cp
= strchr (argv
[i
], '\n');
321 error ("can't handle command-line argument containing whitespace");
322 length
+= strlen (argv
[i
]) + 1;
325 result
= (char *) xmalloc (length
);
327 for (i
= 0; i
< argc
; ++i
)
330 strcat (result
, " ");
331 strcat (result
, argv
[i
]);
339 /* This function detects whether or not a '&' character (indicating
340 background execution) has been added as *the last* of the arguments ARGS
341 of a command. If it has, it removes it and returns 1. Otherwise it
342 does nothing and returns 0. */
344 strip_bg_char (char **args
)
348 p
= strchr (*args
, '&');
352 if (p
== (*args
+ strlen (*args
) - 1))
354 if (strlen (*args
) > 1)
358 while (*p
== ' ' || *p
== '\t');
370 tty_command (char *file
, int from_tty
)
373 error_no_arg ("terminal name for running target process");
375 inferior_io_terminal
= savestring (file
, strlen (file
));
379 run_command (char *args
, int from_tty
)
385 if (! ptid_equal (inferior_ptid
, null_ptid
) && target_has_execution
)
388 && !query ("The program being debugged has been started already.\n\
389 Start it from the beginning? "))
390 error ("Program not restarted.");
392 #if defined(SOLIB_RESTART)
395 init_wait_for_inferior ();
398 clear_breakpoint_hit_counts ();
400 /* Purge old solib objfiles. */
401 objfile_purge_solibs ();
403 do_run_cleanups (NULL
);
405 /* The comment here used to read, "The exec file is re-read every
406 time we do a generic_mourn_inferior, so we just have to worry
407 about the symbol file." The `generic_mourn_inferior' function
408 gets called whenever the program exits. However, suppose the
409 program exits, and *then* the executable file changes? We need
410 to check again here. Since reopen_exec_file doesn't do anything
411 if the timestamp hasn't changed, I don't see the harm. */
415 exec_file
= (char *) get_exec_file (0);
417 /* We keep symbols from add-symbol-file, on the grounds that the
418 user might want to add some symbols before running the program
419 (right?). But sometimes (dynamic loading where the user manually
420 introduces the new symbols with add-symbol-file), the code which
421 the symbols describe does not persist between runs. Currently
422 the user has to manually nuke all symbols between runs if they
423 want them to go away (PR 2207). This is probably reasonable. */
427 if (event_loop_p
&& target_can_async_p ())
428 async_disable_stdin ();
432 int async_exec
= strip_bg_char (&args
);
434 /* If we get a request for running in the bg but the target
435 doesn't support it, error out. */
436 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
437 error ("Asynchronous execution not supported on this target.");
439 /* If we don't get a request of running in the bg, then we need
440 to simulate synchronous (fg) execution. */
441 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
443 /* Simulate synchronous execution */
444 async_disable_stdin ();
447 /* If there were other args, beside '&', process them. */
450 char *old_args
= set_inferior_args (xstrdup (args
));
457 ui_out_field_string (uiout
, NULL
, "Starting program");
458 ui_out_text (uiout
, ": ");
460 ui_out_field_string (uiout
, "execfile", exec_file
);
461 ui_out_spaces (uiout
, 1);
462 /* We call get_inferior_args() because we might need to compute
464 ui_out_field_string (uiout
, "infargs", get_inferior_args ());
465 ui_out_text (uiout
, "\n");
466 ui_out_flush (uiout
);
469 /* We call get_inferior_args() because we might need to compute
471 target_create_inferior (exec_file
, get_inferior_args (),
472 environ_vector (inferior_environ
));
477 run_no_args_command (char *args
, int from_tty
)
479 char *old_args
= set_inferior_args (xstrdup (""));
485 continue_command (char *proc_count_exp
, int from_tty
)
490 /* Find out whether we must run in the background. */
491 if (proc_count_exp
!= NULL
)
492 async_exec
= strip_bg_char (&proc_count_exp
);
494 /* If we must run in the background, but the target can't do it,
496 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
497 error ("Asynchronous execution not supported on this target.");
499 /* If we are not asked to run in the bg, then prepare to run in the
500 foreground, synchronously. */
501 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
503 /* Simulate synchronous execution */
504 async_disable_stdin ();
507 /* If have argument (besides '&'), set proceed count of breakpoint
509 if (proc_count_exp
!= NULL
)
511 bpstat bs
= stop_bpstat
;
512 int num
= bpstat_num (&bs
);
513 if (num
== 0 && from_tty
)
516 ("Not stopped at any breakpoint; argument ignored.\n");
520 set_ignore_count (num
,
521 parse_and_eval_long (proc_count_exp
) - 1,
523 /* set_ignore_count prints a message ending with a period.
524 So print two spaces before "Continuing.". */
526 printf_filtered (" ");
527 num
= bpstat_num (&bs
);
532 printf_filtered ("Continuing.\n");
534 clear_proceed_status ();
536 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
539 /* Step until outside of current statement. */
542 step_command (char *count_string
, int from_tty
)
544 step_1 (0, 0, count_string
);
547 /* Likewise, but skip over subroutine calls as if single instructions. */
550 next_command (char *count_string
, int from_tty
)
552 step_1 (1, 0, count_string
);
555 /* Likewise, but step only one instruction. */
558 stepi_command (char *count_string
, int from_tty
)
560 step_1 (0, 1, count_string
);
564 nexti_command (char *count_string
, int from_tty
)
566 step_1 (1, 1, count_string
);
570 disable_longjmp_breakpoint_cleanup (void *ignore
)
572 disable_longjmp_breakpoint ();
576 step_1 (int skip_subroutines
, int single_inst
, char *count_string
)
579 struct frame_info
*frame
;
580 struct cleanup
*cleanups
= 0;
586 async_exec
= strip_bg_char (&count_string
);
588 /* If we get a request for running in the bg but the target
589 doesn't support it, error out. */
590 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
591 error ("Asynchronous execution not supported on this target.");
593 /* If we don't get a request of running in the bg, then we need
594 to simulate synchronous (fg) execution. */
595 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
597 /* Simulate synchronous execution */
598 async_disable_stdin ();
601 count
= count_string
? parse_and_eval_long (count_string
) : 1;
603 if (!single_inst
|| skip_subroutines
) /* leave si command alone */
605 enable_longjmp_breakpoint ();
606 if (!event_loop_p
|| !target_can_async_p ())
607 cleanups
= make_cleanup (disable_longjmp_breakpoint_cleanup
, 0 /*ignore*/);
609 make_exec_cleanup (disable_longjmp_breakpoint_cleanup
, 0 /*ignore*/);
612 /* In synchronous case, all is well, just use the regular for loop. */
613 if (!event_loop_p
|| !target_can_async_p ())
615 for (; count
> 0; count
--)
617 clear_proceed_status ();
619 frame
= get_current_frame ();
620 if (!frame
) /* Avoid coredump here. Why tho? */
621 error ("No current frame");
622 step_frame_id
= get_frame_id (frame
);
626 find_pc_line_pc_range (stop_pc
, &step_range_start
, &step_range_end
);
627 if (step_range_end
== 0)
630 if (find_pc_partial_function (stop_pc
, &name
, &step_range_start
,
631 &step_range_end
) == 0)
632 error ("Cannot find bounds of current function");
634 target_terminal_ours ();
636 Single stepping until exit from function %s, \n\
637 which has no line number information.\n", name
);
642 /* Say we are stepping, but stop after one insn whatever it does. */
643 step_range_start
= step_range_end
= 1;
644 if (!skip_subroutines
)
646 Don't step over function calls, not even to functions lacking
648 step_over_calls
= STEP_OVER_NONE
;
651 if (skip_subroutines
)
652 step_over_calls
= STEP_OVER_ALL
;
654 step_multi
= (count
> 1);
655 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
661 if (!single_inst
|| skip_subroutines
)
662 do_cleanups (cleanups
);
665 /* In case of asynchronous target things get complicated, do only
666 one step for now, before returning control to the event loop. Let
667 the continuation figure out how many other steps we need to do,
668 and handle them one at the time, through step_once(). */
671 if (event_loop_p
&& target_can_async_p ())
672 step_once (skip_subroutines
, single_inst
, count
);
676 /* Called after we are done with one step operation, to check whether
677 we need to step again, before we print the prompt and return control
678 to the user. If count is > 1, we will need to do one more call to
679 proceed(), via step_once(). Basically it is like step_once and
680 step_1_continuation are co-recursive. */
682 step_1_continuation (struct continuation_arg
*arg
)
685 int skip_subroutines
;
688 skip_subroutines
= arg
->data
.integer
;
689 single_inst
= arg
->next
->data
.integer
;
690 count
= arg
->next
->next
->data
.integer
;
693 step_once (skip_subroutines
, single_inst
, count
- 1);
695 if (!single_inst
|| skip_subroutines
)
696 do_exec_cleanups (ALL_CLEANUPS
);
699 /* Do just one step operation. If count >1 we will have to set up a
700 continuation to be done after the target stops (after this one
701 step). This is useful to implement the 'step n' kind of commands, in
702 case of asynchronous targets. We had to split step_1 into two parts,
703 one to be done before proceed() and one afterwards. This function is
704 called in case of step n with n>1, after the first step operation has
707 step_once (int skip_subroutines
, int single_inst
, int count
)
709 struct continuation_arg
*arg1
;
710 struct continuation_arg
*arg2
;
711 struct continuation_arg
*arg3
;
712 struct frame_info
*frame
;
716 clear_proceed_status ();
718 frame
= get_current_frame ();
719 if (!frame
) /* Avoid coredump here. Why tho? */
720 error ("No current frame");
721 step_frame_id
= get_frame_id (frame
);
725 find_pc_line_pc_range (stop_pc
, &step_range_start
, &step_range_end
);
727 /* If we have no line info, switch to stepi mode. */
728 if (step_range_end
== 0 && step_stop_if_no_debug
)
730 step_range_start
= step_range_end
= 1;
732 else if (step_range_end
== 0)
735 if (find_pc_partial_function (stop_pc
, &name
, &step_range_start
,
736 &step_range_end
) == 0)
737 error ("Cannot find bounds of current function");
739 target_terminal_ours ();
741 Single stepping until exit from function %s, \n\
742 which has no line number information.\n", name
);
747 /* Say we are stepping, but stop after one insn whatever it does. */
748 step_range_start
= step_range_end
= 1;
749 if (!skip_subroutines
)
751 Don't step over function calls, not even to functions lacking
753 step_over_calls
= STEP_OVER_NONE
;
756 if (skip_subroutines
)
757 step_over_calls
= STEP_OVER_ALL
;
759 step_multi
= (count
> 1);
761 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
763 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
765 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
767 arg1
->data
.integer
= skip_subroutines
;
769 arg2
->data
.integer
= single_inst
;
771 arg3
->data
.integer
= count
;
772 add_intermediate_continuation (step_1_continuation
, arg1
);
773 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
778 /* Continue program at specified address. */
781 jump_command (char *arg
, int from_tty
)
784 struct symtabs_and_lines sals
;
785 struct symtab_and_line sal
;
792 /* Find out whether we must run in the background. */
794 async_exec
= strip_bg_char (&arg
);
796 /* If we must run in the background, but the target can't do it,
798 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
799 error ("Asynchronous execution not supported on this target.");
801 /* If we are not asked to run in the bg, then prepare to run in the
802 foreground, synchronously. */
803 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
805 /* Simulate synchronous execution */
806 async_disable_stdin ();
810 error_no_arg ("starting address");
812 sals
= decode_line_spec_1 (arg
, 1);
815 error ("Unreasonable jump request");
821 if (sal
.symtab
== 0 && sal
.pc
== 0)
822 error ("No source file has been specified.");
824 resolve_sal_pc (&sal
); /* May error out */
826 /* See if we are trying to jump to another function. */
827 fn
= get_frame_function (get_current_frame ());
828 sfn
= find_pc_function (sal
.pc
);
829 if (fn
!= NULL
&& sfn
!= fn
)
831 if (!query ("Line %d is not in `%s'. Jump anyway? ", sal
.line
,
832 SYMBOL_PRINT_NAME (fn
)))
834 error ("Not confirmed.");
841 fixup_symbol_section (sfn
, 0);
842 if (section_is_overlay (SYMBOL_BFD_SECTION (sfn
)) &&
843 !section_is_mapped (SYMBOL_BFD_SECTION (sfn
)))
845 if (!query ("WARNING!!! Destination is in unmapped overlay! Jump anyway? "))
847 error ("Not confirmed.");
857 printf_filtered ("Continuing at ");
858 print_address_numeric (addr
, 1, gdb_stdout
);
859 printf_filtered (".\n");
862 clear_proceed_status ();
863 proceed (addr
, TARGET_SIGNAL_0
, 0);
867 /* Go to line or address in current procedure */
869 go_command (char *line_no
, int from_tty
)
871 if (line_no
== (char *) NULL
|| !*line_no
)
872 printf_filtered (GO_USAGE
);
875 tbreak_command (line_no
, from_tty
);
876 jump_command (line_no
, from_tty
);
881 /* Continue program giving it specified signal. */
884 signal_command (char *signum_exp
, int from_tty
)
886 enum target_signal oursig
;
888 dont_repeat (); /* Too dangerous. */
892 error_no_arg ("signal number");
894 /* It would be even slicker to make signal names be valid expressions,
895 (the type could be "enum $signal" or some such), then the user could
896 assign them to convenience variables. */
897 oursig
= target_signal_from_name (signum_exp
);
899 if (oursig
== TARGET_SIGNAL_UNKNOWN
)
901 /* No, try numeric. */
902 int num
= parse_and_eval_long (signum_exp
);
905 oursig
= TARGET_SIGNAL_0
;
907 oursig
= target_signal_from_command (num
);
912 if (oursig
== TARGET_SIGNAL_0
)
913 printf_filtered ("Continuing with no signal.\n");
915 printf_filtered ("Continuing with signal %s.\n",
916 target_signal_to_name (oursig
));
919 clear_proceed_status ();
920 /* "signal 0" should not get stuck if we are stopped at a breakpoint.
921 FIXME: Neither should "signal foo" but when I tried passing
922 (CORE_ADDR)-1 unconditionally I got a testsuite failure which I haven't
923 tried to track down yet. */
924 proceed (oursig
== TARGET_SIGNAL_0
? (CORE_ADDR
) -1 : stop_pc
, oursig
, 0);
927 /* Proceed until we reach a different source line with pc greater than
928 our current one or exit the function. We skip calls in both cases.
930 Note that eventually this command should probably be changed so
931 that only source lines are printed out when we hit the breakpoint
932 we set. This may involve changes to wait_for_inferior and the
933 proceed status code. */
936 until_next_command (int from_tty
)
938 struct frame_info
*frame
;
941 struct symtab_and_line sal
;
943 clear_proceed_status ();
945 frame
= get_current_frame ();
947 /* Step until either exited from this function or greater
948 than the current line (if in symbolic section) or pc (if
952 func
= find_pc_function (pc
);
956 struct minimal_symbol
*msymbol
= lookup_minimal_symbol_by_pc (pc
);
959 error ("Execution is not within a known function.");
961 step_range_start
= SYMBOL_VALUE_ADDRESS (msymbol
);
966 sal
= find_pc_line (pc
, 0);
968 step_range_start
= BLOCK_START (SYMBOL_BLOCK_VALUE (func
));
969 step_range_end
= sal
.end
;
972 step_over_calls
= STEP_OVER_ALL
;
973 step_frame_id
= get_frame_id (frame
);
975 step_multi
= 0; /* Only one call to proceed */
977 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
981 until_command (char *arg
, int from_tty
)
985 if (!target_has_execution
)
986 error ("The program is not running.");
988 /* Find out whether we must run in the background. */
990 async_exec
= strip_bg_char (&arg
);
992 /* If we must run in the background, but the target can't do it,
994 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
995 error ("Asynchronous execution not supported on this target.");
997 /* If we are not asked to run in the bg, then prepare to run in the
998 foreground, synchronously. */
999 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
1001 /* Simulate synchronous execution */
1002 async_disable_stdin ();
1006 until_break_command (arg
, from_tty
, 0);
1008 until_next_command (from_tty
);
1012 advance_command (char *arg
, int from_tty
)
1016 if (!target_has_execution
)
1017 error ("The program is not running.");
1020 error_no_arg ("a location");
1022 /* Find out whether we must run in the background. */
1024 async_exec
= strip_bg_char (&arg
);
1026 /* If we must run in the background, but the target can't do it,
1028 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
1029 error ("Asynchronous execution not supported on this target.");
1031 /* If we are not asked to run in the bg, then prepare to run in the
1032 foreground, synchronously. */
1033 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
1035 /* Simulate synchronous execution. */
1036 async_disable_stdin ();
1039 until_break_command (arg
, from_tty
, 1);
1043 static struct value
*
1044 legacy_return_value (int struct_return
, struct type
*value_type
)
1046 struct value
*value
;
1050 /* The return value can be found in the inferior's registers. */
1051 return register_value_being_returned (value_type
, stop_registers
);
1054 if (DEPRECATED_EXTRACT_STRUCT_VALUE_ADDRESS_P ())
1058 addr
= DEPRECATED_EXTRACT_STRUCT_VALUE_ADDRESS (stop_registers
);
1060 error ("Function return value unknown.");
1061 return value_at (value_type
, addr
, NULL
);
1064 /* It is "struct return" yet the value is being extracted,
1065 presumably from registers, using EXTRACT_RETURN_VALUE. This
1066 doesn't make sense. Unfortunately, the legacy interfaces allowed
1067 this behavior. Sigh! */
1068 value
= allocate_value (value_type
);
1069 CHECK_TYPEDEF (value_type
);
1070 /* If the function returns void, don't bother fetching the return
1072 EXTRACT_RETURN_VALUE (value_type
, stop_registers
,
1073 VALUE_CONTENTS_RAW (value
));
1077 /* Print the result of a function at the end of a 'finish' command. */
1080 print_return_value (int struct_return
, struct type
*value_type
)
1082 struct gdbarch
*gdbarch
= current_gdbarch
;
1083 struct cleanup
*old_chain
;
1084 struct ui_stream
*stb
;
1085 struct value
*value
= NULL
;
1087 /* FIXME: 2003-09-27: When returning from a nested inferior function
1088 call, it's possible (with no help from the architecture vector)
1089 to locate and return/print a "struct return" value. This is just
1090 a more complicated case of what is already being done in in the
1091 inferior function call code. In fact, when inferior function
1092 calls are made async, this will likely be made the norm. */
1094 if (gdbarch_return_value_p (gdbarch
))
1096 switch (gdbarch_return_value (gdbarch
, value_type
, NULL
, NULL
, NULL
))
1098 case RETURN_VALUE_REGISTER_CONVENTION
:
1099 case RETURN_VALUE_ABI_RETURNS_ADDRESS
:
1100 value
= allocate_value (value_type
);
1101 CHECK_TYPEDEF (value_type
);
1102 gdbarch_return_value (current_gdbarch
, value_type
, stop_registers
,
1103 VALUE_CONTENTS_RAW (value
), NULL
);
1106 case RETURN_VALUE_STRUCT_CONVENTION
:
1111 value
= legacy_return_value (struct_return
, value_type
);
1116 stb
= ui_out_stream_new (uiout
);
1117 old_chain
= make_cleanup_ui_out_stream_delete (stb
);
1118 ui_out_text (uiout
, "Value returned is ");
1119 ui_out_field_fmt (uiout
, "gdb-result-var", "$%d",
1120 record_latest_value (value
));
1121 ui_out_text (uiout
, " = ");
1122 value_print (value
, stb
->stream
, 0, Val_no_prettyprint
);
1123 ui_out_field_stream (uiout
, "return-value", stb
);
1124 ui_out_text (uiout
, "\n");
1125 do_cleanups (old_chain
);
1129 ui_out_text (uiout
, "Value returned has type: ");
1130 ui_out_field_string (uiout
, "return-type", TYPE_NAME (value_type
));
1131 ui_out_text (uiout
, ".");
1132 ui_out_text (uiout
, " Cannot determine contents\n");
1136 /* Stuff that needs to be done by the finish command after the target
1137 has stopped. In asynchronous mode, we wait for the target to stop
1138 in the call to poll or select in the event loop, so it is
1139 impossible to do all the stuff as part of the finish_command
1140 function itself. The only chance we have to complete this command
1141 is in fetch_inferior_event, which is called by the event loop as
1142 soon as it detects that the target has stopped. This function is
1143 called via the cmd_continuation pointer. */
1146 finish_command_continuation (struct continuation_arg
*arg
)
1148 struct symbol
*function
;
1149 struct breakpoint
*breakpoint
;
1150 struct cleanup
*cleanups
;
1152 breakpoint
= (struct breakpoint
*) arg
->data
.pointer
;
1153 function
= (struct symbol
*) arg
->next
->data
.pointer
;
1154 cleanups
= (struct cleanup
*) arg
->next
->next
->data
.pointer
;
1156 if (bpstat_find_breakpoint (stop_bpstat
, breakpoint
) != NULL
1157 && function
!= NULL
)
1159 struct type
*value_type
;
1163 value_type
= TYPE_TARGET_TYPE (SYMBOL_TYPE (function
));
1165 internal_error (__FILE__
, __LINE__
,
1166 "finish_command: function has no target type");
1168 if (TYPE_CODE (value_type
) == TYPE_CODE_VOID
)
1170 do_exec_cleanups (cleanups
);
1174 CHECK_TYPEDEF (value_type
);
1175 gcc_compiled
= BLOCK_GCC_COMPILED (SYMBOL_BLOCK_VALUE (function
));
1176 struct_return
= using_struct_return (value_type
, gcc_compiled
);
1178 print_return_value (struct_return
, value_type
);
1181 do_exec_cleanups (cleanups
);
1184 /* "finish": Set a temporary breakpoint at the place the selected
1185 frame will return to, then continue. */
1188 finish_command (char *arg
, int from_tty
)
1190 struct symtab_and_line sal
;
1191 struct frame_info
*frame
;
1192 struct symbol
*function
;
1193 struct breakpoint
*breakpoint
;
1194 struct cleanup
*old_chain
;
1195 struct continuation_arg
*arg1
, *arg2
, *arg3
;
1199 /* Find out whether we must run in the background. */
1201 async_exec
= strip_bg_char (&arg
);
1203 /* If we must run in the background, but the target can't do it,
1205 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
1206 error ("Asynchronous execution not supported on this target.");
1208 /* If we are not asked to run in the bg, then prepare to run in the
1209 foreground, synchronously. */
1210 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
1212 /* Simulate synchronous execution. */
1213 async_disable_stdin ();
1217 error ("The \"finish\" command does not take any arguments.");
1218 if (!target_has_execution
)
1219 error ("The program is not running.");
1220 if (deprecated_selected_frame
== NULL
)
1221 error ("No selected frame.");
1223 frame
= get_prev_frame (deprecated_selected_frame
);
1225 error ("\"finish\" not meaningful in the outermost frame.");
1227 clear_proceed_status ();
1229 sal
= find_pc_line (get_frame_pc (frame
), 0);
1230 sal
.pc
= get_frame_pc (frame
);
1232 breakpoint
= set_momentary_breakpoint (sal
, get_frame_id (frame
), bp_finish
);
1234 if (!event_loop_p
|| !target_can_async_p ())
1235 old_chain
= make_cleanup_delete_breakpoint (breakpoint
);
1237 old_chain
= make_exec_cleanup_delete_breakpoint (breakpoint
);
1239 /* Find the function we will return from. */
1241 function
= find_pc_function (get_frame_pc (deprecated_selected_frame
));
1243 /* Print info on the selected frame, including level number but not
1247 printf_filtered ("Run till exit from ");
1248 print_stack_frame (get_selected_frame (), 1, LOCATION
);
1251 /* If running asynchronously and the target support asynchronous
1252 execution, set things up for the rest of the finish command to be
1253 completed later on, when gdb has detected that the target has
1254 stopped, in fetch_inferior_event. */
1255 if (event_loop_p
&& target_can_async_p ())
1258 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
1260 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
1262 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
1266 arg1
->data
.pointer
= breakpoint
;
1267 arg2
->data
.pointer
= function
;
1268 arg3
->data
.pointer
= old_chain
;
1269 add_continuation (finish_command_continuation
, arg1
);
1272 proceed_to_finish
= 1; /* We want stop_registers, please... */
1273 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
1275 /* Do this only if not running asynchronously or if the target
1276 cannot do async execution. Otherwise, complete this command when
1277 the target actually stops, in fetch_inferior_event. */
1278 if (!event_loop_p
|| !target_can_async_p ())
1280 /* Did we stop at our breakpoint? */
1281 if (bpstat_find_breakpoint (stop_bpstat
, breakpoint
) != NULL
1282 && function
!= NULL
)
1284 struct type
*value_type
;
1288 value_type
= TYPE_TARGET_TYPE (SYMBOL_TYPE (function
));
1290 internal_error (__FILE__
, __LINE__
,
1291 "finish_command: function has no target type");
1293 /* FIXME: Shouldn't we do the cleanups before returning? */
1294 if (TYPE_CODE (value_type
) == TYPE_CODE_VOID
)
1297 CHECK_TYPEDEF (value_type
);
1298 gcc_compiled
= BLOCK_GCC_COMPILED (SYMBOL_BLOCK_VALUE (function
));
1299 struct_return
= using_struct_return (value_type
, gcc_compiled
);
1301 print_return_value (struct_return
, value_type
);
1304 do_cleanups (old_chain
);
1310 program_info (char *args
, int from_tty
)
1312 bpstat bs
= stop_bpstat
;
1313 int num
= bpstat_num (&bs
);
1315 if (!target_has_execution
)
1317 printf_filtered ("The program being debugged is not being run.\n");
1321 target_files_info ();
1322 printf_filtered ("Program stopped at %s.\n",
1323 local_hex_string ((unsigned long) stop_pc
));
1325 printf_filtered ("It stopped after being stepped.\n");
1328 /* There may be several breakpoints in the same place, so this
1329 isn't as strange as it seems. */
1334 printf_filtered ("It stopped at a breakpoint that has ");
1335 printf_filtered ("since been deleted.\n");
1338 printf_filtered ("It stopped at breakpoint %d.\n", num
);
1339 num
= bpstat_num (&bs
);
1342 else if (stop_signal
!= TARGET_SIGNAL_0
)
1344 printf_filtered ("It stopped with signal %s, %s.\n",
1345 target_signal_to_name (stop_signal
),
1346 target_signal_to_string (stop_signal
));
1351 printf_filtered ("Type \"info stack\" or \"info registers\" ");
1352 printf_filtered ("for more information.\n");
1357 environment_info (char *var
, int from_tty
)
1361 char *val
= get_in_environ (inferior_environ
, var
);
1364 puts_filtered (var
);
1365 puts_filtered (" = ");
1366 puts_filtered (val
);
1367 puts_filtered ("\n");
1371 puts_filtered ("Environment variable \"");
1372 puts_filtered (var
);
1373 puts_filtered ("\" not defined.\n");
1378 char **vector
= environ_vector (inferior_environ
);
1381 puts_filtered (*vector
++);
1382 puts_filtered ("\n");
1388 set_environment_command (char *arg
, int from_tty
)
1390 char *p
, *val
, *var
;
1394 error_no_arg ("environment variable and value");
1396 /* Find seperation between variable name and value */
1397 p
= (char *) strchr (arg
, '=');
1398 val
= (char *) strchr (arg
, ' ');
1400 if (p
!= 0 && val
!= 0)
1402 /* We have both a space and an equals. If the space is before the
1403 equals, walk forward over the spaces til we see a nonspace
1404 (possibly the equals). */
1409 /* Now if the = is after the char following the spaces,
1410 take the char following the spaces. */
1414 else if (val
!= 0 && p
== 0)
1418 error_no_arg ("environment variable to set");
1420 if (p
== 0 || p
[1] == 0)
1424 p
= arg
+ strlen (arg
); /* So that savestring below will work */
1428 /* Not setting variable value to null */
1430 while (*val
== ' ' || *val
== '\t')
1434 while (p
!= arg
&& (p
[-1] == ' ' || p
[-1] == '\t'))
1437 var
= savestring (arg
, p
- arg
);
1440 printf_filtered ("Setting environment variable ");
1441 printf_filtered ("\"%s\" to null value.\n", var
);
1442 set_in_environ (inferior_environ
, var
, "");
1445 set_in_environ (inferior_environ
, var
, val
);
1450 unset_environment_command (char *var
, int from_tty
)
1454 /* If there is no argument, delete all environment variables.
1455 Ask for confirmation if reading from the terminal. */
1456 if (!from_tty
|| query ("Delete all environment variables? "))
1458 free_environ (inferior_environ
);
1459 inferior_environ
= make_environ ();
1463 unset_in_environ (inferior_environ
, var
);
1466 /* Handle the execution path (PATH variable) */
1468 static const char path_var_name
[] = "PATH";
1471 path_info (char *args
, int from_tty
)
1473 puts_filtered ("Executable and object file path: ");
1474 puts_filtered (get_in_environ (inferior_environ
, path_var_name
));
1475 puts_filtered ("\n");
1478 /* Add zero or more directories to the front of the execution path. */
1481 path_command (char *dirname
, int from_tty
)
1486 env
= get_in_environ (inferior_environ
, path_var_name
);
1487 /* Can be null if path is not set */
1490 exec_path
= xstrdup (env
);
1491 mod_path (dirname
, &exec_path
);
1492 set_in_environ (inferior_environ
, path_var_name
, exec_path
);
1495 path_info ((char *) NULL
, from_tty
);
1499 /* Print out the machine register regnum. If regnum is -1, print all
1500 registers (print_all == 1) or all non-float and non-vector
1501 registers (print_all == 0).
1503 For most machines, having all_registers_info() print the
1504 register(s) one per line is good enough. If a different format is
1505 required, (eg, for MIPS or Pyramid 90x, which both have lots of
1506 regs), or there is an existing convention for showing all the
1507 registers, define the architecture method PRINT_REGISTERS_INFO to
1508 provide that format. */
1511 default_print_registers_info (struct gdbarch
*gdbarch
,
1512 struct ui_file
*file
,
1513 struct frame_info
*frame
,
1514 int regnum
, int print_all
)
1517 const int numregs
= NUM_REGS
+ NUM_PSEUDO_REGS
;
1518 char raw_buffer
[MAX_REGISTER_SIZE
];
1519 char virtual_buffer
[MAX_REGISTER_SIZE
];
1521 if (DEPRECATED_DO_REGISTERS_INFO_P ())
1523 DEPRECATED_DO_REGISTERS_INFO (regnum
, print_all
);
1527 for (i
= 0; i
< numregs
; i
++)
1529 /* Decide between printing all regs, non-float / vector regs, or
1535 if (!gdbarch_register_reggroup_p (gdbarch
, i
, all_reggroup
))
1540 if (!gdbarch_register_reggroup_p (gdbarch
, i
, general_reggroup
))
1550 /* If the register name is empty, it is undefined for this
1551 processor, so don't display anything. */
1552 if (REGISTER_NAME (i
) == NULL
|| *(REGISTER_NAME (i
)) == '\0')
1555 fputs_filtered (REGISTER_NAME (i
), file
);
1556 print_spaces_filtered (15 - strlen (REGISTER_NAME (i
)), file
);
1558 /* Get the data in raw format. */
1559 if (! frame_register_read (frame
, i
, raw_buffer
))
1561 fprintf_filtered (file
, "*value not available*\n");
1565 /* FIXME: cagney/2002-08-03: This code shouldn't be necessary.
1566 The function frame_register_read() should have returned the
1567 pre-cooked register so no conversion is necessary. */
1568 /* Convert raw data to virtual format if necessary. */
1569 if (DEPRECATED_REGISTER_CONVERTIBLE_P ()
1570 && DEPRECATED_REGISTER_CONVERTIBLE (i
))
1572 DEPRECATED_REGISTER_CONVERT_TO_VIRTUAL (i
, register_type (current_gdbarch
, i
),
1573 raw_buffer
, virtual_buffer
);
1577 memcpy (virtual_buffer
, raw_buffer
,
1578 DEPRECATED_REGISTER_VIRTUAL_SIZE (i
));
1581 /* If virtual format is floating, print it that way, and in raw
1583 if (TYPE_CODE (register_type (current_gdbarch
, i
)) == TYPE_CODE_FLT
)
1587 val_print (register_type (current_gdbarch
, i
), virtual_buffer
, 0, 0,
1588 file
, 0, 1, 0, Val_pretty_default
);
1590 fprintf_filtered (file
, "\t(raw 0x");
1591 for (j
= 0; j
< DEPRECATED_REGISTER_RAW_SIZE (i
); j
++)
1594 if (TARGET_BYTE_ORDER
== BFD_ENDIAN_BIG
)
1597 idx
= DEPRECATED_REGISTER_RAW_SIZE (i
) - 1 - j
;
1598 fprintf_filtered (file
, "%02x", (unsigned char) raw_buffer
[idx
]);
1600 fprintf_filtered (file
, ")");
1604 /* Print the register in hex. */
1605 val_print (register_type (current_gdbarch
, i
), virtual_buffer
, 0, 0,
1606 file
, 'x', 1, 0, Val_pretty_default
);
1607 /* If not a vector register, print it also according to its
1609 if (TYPE_VECTOR (register_type (current_gdbarch
, i
)) == 0)
1611 fprintf_filtered (file
, "\t");
1612 val_print (register_type (current_gdbarch
, i
), virtual_buffer
, 0, 0,
1613 file
, 0, 1, 0, Val_pretty_default
);
1617 fprintf_filtered (file
, "\n");
1622 registers_info (char *addr_exp
, int fpregs
)
1624 int regnum
, numregs
;
1627 if (!target_has_registers
)
1628 error ("The program has no registers now.");
1629 if (deprecated_selected_frame
== NULL
)
1630 error ("No selected frame.");
1634 gdbarch_print_registers_info (current_gdbarch
, gdb_stdout
,
1635 deprecated_selected_frame
, -1, fpregs
);
1639 while (*addr_exp
!= '\0')
1644 /* Keep skipping leading white space. */
1645 if (isspace ((*addr_exp
)))
1651 /* Discard any leading ``$''. Check that there is something
1652 resembling a register following it. */
1653 if (addr_exp
[0] == '$')
1655 if (isspace ((*addr_exp
)) || (*addr_exp
) == '\0')
1656 error ("Missing register name");
1658 /* Find the start/end of this register name/num/group. */
1660 while ((*addr_exp
) != '\0' && !isspace ((*addr_exp
)))
1664 /* Figure out what we've found and display it. */
1666 /* A register name? */
1668 int regnum
= frame_map_name_to_regnum (deprecated_selected_frame
,
1669 start
, end
- start
);
1672 gdbarch_print_registers_info (current_gdbarch
, gdb_stdout
,
1673 deprecated_selected_frame
, regnum
, fpregs
);
1678 /* A register number? (how portable is this one?). */
1681 int regnum
= strtol (start
, &endptr
, 0);
1684 && regnum
< NUM_REGS
+ NUM_PSEUDO_REGS
)
1686 gdbarch_print_registers_info (current_gdbarch
, gdb_stdout
,
1687 deprecated_selected_frame
, regnum
, fpregs
);
1692 /* A register group? */
1694 struct reggroup
*group
;
1695 for (group
= reggroup_next (current_gdbarch
, NULL
);
1697 group
= reggroup_next (current_gdbarch
, group
))
1699 /* Don't bother with a length check. Should the user
1700 enter a short register group name, go with the first
1701 group that matches. */
1702 if (strncmp (start
, reggroup_name (group
), end
- start
) == 0)
1708 for (regnum
= 0; regnum
< NUM_REGS
+ NUM_PSEUDO_REGS
; regnum
++)
1710 if (gdbarch_register_reggroup_p (current_gdbarch
, regnum
,
1712 gdbarch_print_registers_info (current_gdbarch
,
1713 gdb_stdout
, deprecated_selected_frame
,
1720 /* Nothing matched. */
1721 error ("Invalid register `%.*s'", (int) (end
- start
), start
);
1726 all_registers_info (char *addr_exp
, int from_tty
)
1728 registers_info (addr_exp
, 1);
1732 nofp_registers_info (char *addr_exp
, int from_tty
)
1734 registers_info (addr_exp
, 0);
1738 print_vector_info (struct gdbarch
*gdbarch
, struct ui_file
*file
,
1739 struct frame_info
*frame
, const char *args
)
1741 if (!target_has_registers
)
1742 error ("The program has no registers now.");
1743 if (deprecated_selected_frame
== NULL
)
1744 error ("No selected frame.");
1746 if (gdbarch_print_vector_info_p (gdbarch
))
1747 gdbarch_print_vector_info (gdbarch
, file
, frame
, args
);
1751 int printed_something
= 0;
1753 for (regnum
= 0; regnum
< NUM_REGS
+ NUM_PSEUDO_REGS
; regnum
++)
1755 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, vector_reggroup
))
1757 printed_something
= 1;
1758 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
1761 if (!printed_something
)
1762 fprintf_filtered (file
, "No vector information\n");
1767 vector_info (char *args
, int from_tty
)
1769 print_vector_info (current_gdbarch
, gdb_stdout
, deprecated_selected_frame
, args
);
1775 * Should save/restore the tty state since it might be that the
1776 * program to be debugged was started on this tty and it wants
1777 * the tty in some state other than what we want. If it's running
1778 * on another terminal or without a terminal, then saving and
1779 * restoring the tty state is a harmless no-op.
1780 * This only needs to be done if we are attaching to a process.
1785 takes a program started up outside of gdb and ``attaches'' to it.
1786 This stops it cold in its tracks and allows us to start debugging it.
1787 and wait for the trace-trap that results from attaching. */
1790 attach_command (char *args
, int from_tty
)
1793 char *full_exec_path
= NULL
;
1795 dont_repeat (); /* Not for the faint of heart */
1797 if (target_has_execution
)
1799 if (query ("A program is being debugged already. Kill it? "))
1802 error ("Not killed.");
1805 target_attach (args
, from_tty
);
1807 /* Set up the "saved terminal modes" of the inferior
1808 based on what modes we are starting it with. */
1809 target_terminal_init ();
1811 /* Install inferior's terminal modes. */
1812 target_terminal_inferior ();
1814 /* Set up execution context to know that we should return from
1815 wait_for_inferior as soon as the target reports a stop. */
1816 init_wait_for_inferior ();
1817 clear_proceed_status ();
1819 /* No traps are generated when attaching to inferior under Mach 3
1821 #ifndef ATTACH_NO_WAIT
1822 /* Careful here. See comments in inferior.h. Basically some OSes
1823 don't ignore SIGSTOPs on continue requests anymore. We need a
1824 way for handle_inferior_event to reset the stop_signal variable
1825 after an attach, and this is what STOP_QUIETLY_NO_SIGSTOP is for. */
1826 stop_soon
= STOP_QUIETLY_NO_SIGSTOP
;
1827 wait_for_inferior ();
1828 stop_soon
= NO_STOP_QUIETLY
;
1832 * If no exec file is yet known, try to determine it from the
1835 exec_file
= (char *) get_exec_file (0);
1838 exec_file
= target_pid_to_exec_file (PIDGET (inferior_ptid
));
1841 /* It's possible we don't have a full path, but rather just a
1842 filename. Some targets, such as HP-UX, don't provide the
1845 Attempt to qualify the filename against the source path.
1846 (If that fails, we'll just fall back on the original
1847 filename. Not much more we can do...)
1849 if (!source_full_path_of (exec_file
, &full_exec_path
))
1850 full_exec_path
= savestring (exec_file
, strlen (exec_file
));
1852 exec_file_attach (full_exec_path
, from_tty
);
1853 symbol_file_add_main (full_exec_path
, from_tty
);
1858 reopen_exec_file ();
1863 /* Add shared library symbols from the newly attached process, if any. */
1864 SOLIB_ADD ((char *) 0, from_tty
, ¤t_target
, auto_solib_add
);
1865 re_enable_breakpoints_in_shlibs ();
1868 /* Take any necessary post-attaching actions for this platform.
1870 target_post_attach (PIDGET (inferior_ptid
));
1874 if (deprecated_attach_hook
)
1875 deprecated_attach_hook ();
1880 * takes a program previously attached to and detaches it.
1881 * The program resumes execution and will no longer stop
1882 * on signals, etc. We better not have left any breakpoints
1883 * in the program or it'll die when it hits one. For this
1884 * to work, it may be necessary for the process to have been
1885 * previously attached. It *might* work if the program was
1886 * started via the normal ptrace (PTRACE_TRACEME).
1890 detach_command (char *args
, int from_tty
)
1892 dont_repeat (); /* Not for the faint of heart */
1893 target_detach (args
, from_tty
);
1894 #if defined(SOLIB_RESTART)
1897 if (deprecated_detach_hook
)
1898 deprecated_detach_hook ();
1901 /* Disconnect from the current target without resuming it (leaving it
1902 waiting for a debugger).
1904 We'd better not have left any breakpoints in the program or the
1905 next debugger will get confused. Currently only supported for some
1906 remote targets, since the normal attach mechanisms don't work on
1907 stopped processes on some native platforms (e.g. GNU/Linux). */
1910 disconnect_command (char *args
, int from_tty
)
1912 dont_repeat (); /* Not for the faint of heart */
1913 target_disconnect (args
, from_tty
);
1914 #if defined(SOLIB_RESTART)
1917 if (deprecated_detach_hook
)
1918 deprecated_detach_hook ();
1921 /* Stop the execution of the target while running in async mode, in
1924 interrupt_target_command (char *args
, int from_tty
)
1926 if (event_loop_p
&& target_can_async_p ())
1928 dont_repeat (); /* Not for the faint of heart */
1934 print_float_info (struct gdbarch
*gdbarch
, struct ui_file
*file
,
1935 struct frame_info
*frame
, const char *args
)
1937 if (!target_has_registers
)
1938 error ("The program has no registers now.");
1939 if (deprecated_selected_frame
== NULL
)
1940 error ("No selected frame.");
1942 if (gdbarch_print_float_info_p (gdbarch
))
1943 gdbarch_print_float_info (gdbarch
, file
, frame
, args
);
1947 int printed_something
= 0;
1949 for (regnum
= 0; regnum
< NUM_REGS
+ NUM_PSEUDO_REGS
; regnum
++)
1951 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, float_reggroup
))
1953 printed_something
= 1;
1954 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
1957 if (!printed_something
)
1958 fprintf_filtered (file
, "\
1959 No floating-point info available for this processor.\n");
1964 float_info (char *args
, int from_tty
)
1966 print_float_info (current_gdbarch
, gdb_stdout
, deprecated_selected_frame
, args
);
1970 unset_command (char *args
, int from_tty
)
1972 printf_filtered ("\"unset\" must be followed by the name of ");
1973 printf_filtered ("an unset subcommand.\n");
1974 help_list (unsetlist
, "unset ", -1, gdb_stdout
);
1978 _initialize_infcmd (void)
1980 struct cmd_list_element
*c
;
1982 c
= add_com ("tty", class_run
, tty_command
,
1983 "Set terminal for future runs of program being debugged.");
1984 set_cmd_completer (c
, filename_completer
);
1986 c
= add_set_cmd ("args", class_run
, var_string_noescape
,
1987 (char *) &inferior_args
,
1988 "Set argument list to give program being debugged when it is started.\n\
1989 Follow this command with any number of args, to be passed to the program.",
1991 set_cmd_completer (c
, filename_completer
);
1992 set_cmd_sfunc (c
, notice_args_set
);
1993 c
= add_show_from_set (c
, &showlist
);
1994 set_cmd_sfunc (c
, notice_args_read
);
1997 ("environment", no_class
, environment_info
,
1998 "The environment to give the program, or one variable's value.\n\
1999 With an argument VAR, prints the value of environment variable VAR to\n\
2000 give the program being debugged. With no arguments, prints the entire\n\
2001 environment to be given to the program.", &showlist
);
2002 set_cmd_completer (c
, noop_completer
);
2004 add_prefix_cmd ("unset", no_class
, unset_command
,
2005 "Complement to certain \"set\" commands.",
2006 &unsetlist
, "unset ", 0, &cmdlist
);
2008 c
= add_cmd ("environment", class_run
, unset_environment_command
,
2009 "Cancel environment variable VAR for the program.\n\
2010 This does not affect the program until the next \"run\" command.",
2012 set_cmd_completer (c
, noop_completer
);
2014 c
= add_cmd ("environment", class_run
, set_environment_command
,
2015 "Set environment variable value to give the program.\n\
2016 Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\
2017 VALUES of environment variables are uninterpreted strings.\n\
2018 This does not affect the program until the next \"run\" command.",
2020 set_cmd_completer (c
, noop_completer
);
2022 c
= add_com ("path", class_files
, path_command
,
2023 "Add directory DIR(s) to beginning of search path for object files.\n\
2024 $cwd in the path means the current working directory.\n\
2025 This path is equivalent to the $PATH shell variable. It is a list of\n\
2026 directories, separated by colons. These directories are searched to find\n\
2027 fully linked executable files and separately compiled object files as needed.");
2028 set_cmd_completer (c
, filename_completer
);
2030 c
= add_cmd ("paths", no_class
, path_info
,
2031 "Current search path for finding object files.\n\
2032 $cwd in the path means the current working directory.\n\
2033 This path is equivalent to the $PATH shell variable. It is a list of\n\
2034 directories, separated by colons. These directories are searched to find\n\
2035 fully linked executable files and separately compiled object files as needed.",
2037 set_cmd_completer (c
, noop_completer
);
2039 add_com ("attach", class_run
, attach_command
,
2040 "Attach to a process or file outside of GDB.\n\
2041 This command attaches to another target, of the same type as your last\n\
2042 \"target\" command (\"info files\" will show your target stack).\n\
2043 The command may take as argument a process id or a device file.\n\
2044 For a process id, you must have permission to send the process a signal,\n\
2045 and it must have the same effective uid as the debugger.\n\
2046 When using \"attach\" with a process id, the debugger finds the\n\
2047 program running in the process, looking first in the current working\n\
2048 directory, or (if not found there) using the source file search path\n\
2049 (see the \"directory\" command). You can also use the \"file\" command\n\
2050 to specify the program, and to load its symbol table.");
2052 add_com ("detach", class_run
, detach_command
,
2053 "Detach a process or file previously attached.\n\
2054 If a process, it is no longer traced, and it continues its execution. If\n\
2055 you were debugging a file, the file is closed and gdb no longer accesses it.");
2057 add_com ("disconnect", class_run
, disconnect_command
,
2058 "Disconnect from a target.\n\
2059 The target will wait for another debugger to connect. Not available for\n\
2062 add_com ("signal", class_run
, signal_command
,
2063 "Continue program giving it signal specified by the argument.\n\
2064 An argument of \"0\" means continue program without giving it a signal.");
2066 add_com ("stepi", class_run
, stepi_command
,
2067 "Step one instruction exactly.\n\
2068 Argument N means do this N times (or till program stops for another reason).");
2069 add_com_alias ("si", "stepi", class_alias
, 0);
2071 add_com ("nexti", class_run
, nexti_command
,
2072 "Step one instruction, but proceed through subroutine calls.\n\
2073 Argument N means do this N times (or till program stops for another reason).");
2074 add_com_alias ("ni", "nexti", class_alias
, 0);
2076 add_com ("finish", class_run
, finish_command
,
2077 "Execute until selected stack frame returns.\n\
2078 Upon return, the value returned is printed and put in the value history.");
2080 add_com ("next", class_run
, next_command
,
2081 "Step program, proceeding through subroutine calls.\n\
2082 Like the \"step\" command as long as subroutine calls do not happen;\n\
2083 when they do, the call is treated as one instruction.\n\
2084 Argument N means do this N times (or till program stops for another reason).");
2085 add_com_alias ("n", "next", class_run
, 1);
2087 add_com_alias ("S", "next", class_run
, 1);
2089 add_com ("step", class_run
, step_command
,
2090 "Step program until it reaches a different source line.\n\
2091 Argument N means do this N times (or till program stops for another reason).");
2092 add_com_alias ("s", "step", class_run
, 1);
2094 c
= add_com ("until", class_run
, until_command
,
2095 "Execute until the program reaches a source line greater than the current\n\
2096 or a specified location (same args as break command) within the current frame.");
2097 set_cmd_completer (c
, location_completer
);
2098 add_com_alias ("u", "until", class_run
, 1);
2100 c
= add_com ("advance", class_run
, advance_command
,
2101 "Continue the program up to the given location (same form as args for break command).\n\
2102 Execution will also stop upon exit from the current stack frame.");
2103 set_cmd_completer (c
, location_completer
);
2105 c
= add_com ("jump", class_run
, jump_command
,
2106 "Continue program being debugged at specified line or address.\n\
2107 Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\
2108 for an address to start at.");
2109 set_cmd_completer (c
, location_completer
);
2113 c
= add_com ("go", class_run
, go_command
,
2114 "Usage: go <location>\n\
2115 Continue program being debugged, stopping at specified line or \n\
2117 Give as argument either LINENUM or *ADDR, where ADDR is an \n\
2118 expression for an address to start at.\n\
2119 This command is a combination of tbreak and jump.");
2120 set_cmd_completer (c
, location_completer
);
2124 add_com_alias ("g", "go", class_run
, 1);
2126 add_com ("continue", class_run
, continue_command
,
2127 "Continue program being debugged, after signal or breakpoint.\n\
2128 If proceeding from breakpoint, a number N may be used as an argument,\n\
2129 which means to set the ignore count of that breakpoint to N - 1 (so that\n\
2130 the breakpoint won't break until the Nth time it is reached).");
2131 add_com_alias ("c", "cont", class_run
, 1);
2132 add_com_alias ("fg", "cont", class_run
, 1);
2134 c
= add_com ("run", class_run
, run_command
,
2135 "Start debugged program. You may specify arguments to give it.\n\
2136 Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\
2137 Input and output redirection with \">\", \"<\", or \">>\" are also allowed.\n\n\
2138 With no arguments, uses arguments last specified (with \"run\" or \"set args\").\n\
2139 To cancel previous arguments and run with no arguments,\n\
2140 use \"set args\" without arguments.");
2141 set_cmd_completer (c
, filename_completer
);
2142 add_com_alias ("r", "run", class_run
, 1);
2144 add_com ("R", class_run
, run_no_args_command
,
2145 "Start debugged program with no arguments.");
2147 add_com ("interrupt", class_run
, interrupt_target_command
,
2148 "Interrupt the execution of the debugged program.");
2150 add_info ("registers", nofp_registers_info
,
2151 "List of integer registers and their contents, for selected stack frame.\n\
2152 Register name as argument means describe only that register.");
2153 add_info_alias ("r", "registers", 1);
2156 add_com ("lr", class_info
, nofp_registers_info
,
2157 "List of integer registers and their contents, for selected stack frame.\n\
2158 Register name as argument means describe only that register.");
2159 add_info ("all-registers", all_registers_info
,
2160 "List of all registers and their contents, for selected stack frame.\n\
2161 Register name as argument means describe only that register.");
2163 add_info ("program", program_info
,
2164 "Execution status of the program.");
2166 add_info ("float", float_info
,
2167 "Print the status of the floating point unit\n");
2169 add_info ("vector", vector_info
,
2170 "Print the status of the vector unit\n");
2172 inferior_environ
= make_environ ();
2173 init_environ (inferior_environ
);