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. */
266 construct_inferior_arguments (struct gdbarch
*gdbarch
, int argc
, char **argv
)
270 if (STARTUP_WITH_SHELL
)
272 /* This holds all the characters considered special to the
273 typical Unix shells. We include `^' because the SunOS
274 /bin/sh treats it as a synonym for `|'. */
275 char *special
= "\"!#$&*()\\|[]{}<>?'\"`~^; \t\n";
280 /* We over-compute the size. It shouldn't matter. */
281 for (i
= 0; i
< argc
; ++i
)
282 length
+= 2 * strlen (argv
[i
]) + 1 + 2 * (argv
[i
][0] == '\0');
284 result
= (char *) xmalloc (length
);
287 for (i
= 0; i
< argc
; ++i
)
292 /* Need to handle empty arguments specially. */
293 if (argv
[i
][0] == '\0')
300 for (cp
= argv
[i
]; *cp
; ++cp
)
302 if (strchr (special
, *cp
) != NULL
)
312 /* In this case we can't handle arguments that contain spaces,
313 tabs, or newlines -- see breakup_args(). */
317 for (i
= 0; i
< argc
; ++i
)
319 char *cp
= strchr (argv
[i
], ' ');
321 cp
= strchr (argv
[i
], '\t');
323 cp
= strchr (argv
[i
], '\n');
325 error ("can't handle command-line argument containing whitespace");
326 length
+= strlen (argv
[i
]) + 1;
329 result
= (char *) xmalloc (length
);
331 for (i
= 0; i
< argc
; ++i
)
334 strcat (result
, " ");
335 strcat (result
, argv
[i
]);
343 /* This function detects whether or not a '&' character (indicating
344 background execution) has been added as *the last* of the arguments ARGS
345 of a command. If it has, it removes it and returns 1. Otherwise it
346 does nothing and returns 0. */
348 strip_bg_char (char **args
)
352 p
= strchr (*args
, '&');
356 if (p
== (*args
+ strlen (*args
) - 1))
358 if (strlen (*args
) > 1)
362 while (*p
== ' ' || *p
== '\t');
375 tty_command (char *file
, int from_tty
)
378 error_no_arg ("terminal name for running target process");
380 inferior_io_terminal
= savestring (file
, strlen (file
));
384 run_command (char *args
, int from_tty
)
390 if (! ptid_equal (inferior_ptid
, null_ptid
) && target_has_execution
)
393 && !query ("The program being debugged has been started already.\n\
394 Start it from the beginning? "))
395 error ("Program not restarted.");
397 #if defined(SOLIB_RESTART)
400 init_wait_for_inferior ();
403 clear_breakpoint_hit_counts ();
405 /* Purge old solib objfiles. */
406 objfile_purge_solibs ();
408 do_run_cleanups (NULL
);
410 /* The comment here used to read, "The exec file is re-read every
411 time we do a generic_mourn_inferior, so we just have to worry
412 about the symbol file." The `generic_mourn_inferior' function
413 gets called whenever the program exits. However, suppose the
414 program exits, and *then* the executable file changes? We need
415 to check again here. Since reopen_exec_file doesn't do anything
416 if the timestamp hasn't changed, I don't see the harm. */
420 exec_file
= (char *) get_exec_file (0);
422 /* We keep symbols from add-symbol-file, on the grounds that the
423 user might want to add some symbols before running the program
424 (right?). But sometimes (dynamic loading where the user manually
425 introduces the new symbols with add-symbol-file), the code which
426 the symbols describe does not persist between runs. Currently
427 the user has to manually nuke all symbols between runs if they
428 want them to go away (PR 2207). This is probably reasonable. */
432 if (event_loop_p
&& target_can_async_p ())
433 async_disable_stdin ();
437 int async_exec
= strip_bg_char (&args
);
439 /* If we get a request for running in the bg but the target
440 doesn't support it, error out. */
441 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
442 error ("Asynchronous execution not supported on this target.");
444 /* If we don't get a request of running in the bg, then we need
445 to simulate synchronous (fg) execution. */
446 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
448 /* Simulate synchronous execution */
449 async_disable_stdin ();
452 /* If there were other args, beside '&', process them. */
455 char *old_args
= set_inferior_args (xstrdup (args
));
462 ui_out_field_string (uiout
, NULL
, "Starting program");
463 ui_out_text (uiout
, ": ");
465 ui_out_field_string (uiout
, "execfile", exec_file
);
466 ui_out_spaces (uiout
, 1);
467 /* We call get_inferior_args() because we might need to compute
469 ui_out_field_string (uiout
, "infargs", get_inferior_args ());
470 ui_out_text (uiout
, "\n");
471 ui_out_flush (uiout
);
474 /* We call get_inferior_args() because we might need to compute
476 target_create_inferior (exec_file
, get_inferior_args (),
477 environ_vector (inferior_environ
));
482 run_no_args_command (char *args
, int from_tty
)
484 char *old_args
= set_inferior_args (xstrdup (""));
490 continue_command (char *proc_count_exp
, int from_tty
)
495 /* Find out whether we must run in the background. */
496 if (proc_count_exp
!= NULL
)
497 async_exec
= strip_bg_char (&proc_count_exp
);
499 /* If we must run in the background, but the target can't do it,
501 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
502 error ("Asynchronous execution not supported on this target.");
504 /* If we are not asked to run in the bg, then prepare to run in the
505 foreground, synchronously. */
506 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
508 /* Simulate synchronous execution */
509 async_disable_stdin ();
512 /* If have argument (besides '&'), set proceed count of breakpoint
514 if (proc_count_exp
!= NULL
)
516 bpstat bs
= stop_bpstat
;
517 int num
= bpstat_num (&bs
);
518 if (num
== 0 && from_tty
)
521 ("Not stopped at any breakpoint; argument ignored.\n");
525 set_ignore_count (num
,
526 parse_and_eval_long (proc_count_exp
) - 1,
528 /* set_ignore_count prints a message ending with a period.
529 So print two spaces before "Continuing.". */
531 printf_filtered (" ");
532 num
= bpstat_num (&bs
);
537 printf_filtered ("Continuing.\n");
539 clear_proceed_status ();
541 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
544 /* Step until outside of current statement. */
548 step_command (char *count_string
, int from_tty
)
550 step_1 (0, 0, count_string
);
553 /* Likewise, but skip over subroutine calls as if single instructions. */
557 next_command (char *count_string
, int from_tty
)
559 step_1 (1, 0, count_string
);
562 /* Likewise, but step only one instruction. */
566 stepi_command (char *count_string
, int from_tty
)
568 step_1 (0, 1, count_string
);
573 nexti_command (char *count_string
, int from_tty
)
575 step_1 (1, 1, count_string
);
579 disable_longjmp_breakpoint_cleanup (void *ignore
)
581 disable_longjmp_breakpoint ();
585 step_1 (int skip_subroutines
, int single_inst
, char *count_string
)
587 register int count
= 1;
588 struct frame_info
*frame
;
589 struct cleanup
*cleanups
= 0;
595 async_exec
= strip_bg_char (&count_string
);
597 /* If we get a request for running in the bg but the target
598 doesn't support it, error out. */
599 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
600 error ("Asynchronous execution not supported on this target.");
602 /* If we don't get a request of running in the bg, then we need
603 to simulate synchronous (fg) execution. */
604 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
606 /* Simulate synchronous execution */
607 async_disable_stdin ();
610 count
= count_string
? parse_and_eval_long (count_string
) : 1;
612 if (!single_inst
|| skip_subroutines
) /* leave si command alone */
614 enable_longjmp_breakpoint ();
615 if (!event_loop_p
|| !target_can_async_p ())
616 cleanups
= make_cleanup (disable_longjmp_breakpoint_cleanup
, 0 /*ignore*/);
618 make_exec_cleanup (disable_longjmp_breakpoint_cleanup
, 0 /*ignore*/);
621 /* In synchronous case, all is well, just use the regular for loop. */
622 if (!event_loop_p
|| !target_can_async_p ())
624 for (; count
> 0; count
--)
626 clear_proceed_status ();
628 frame
= get_current_frame ();
629 if (!frame
) /* Avoid coredump here. Why tho? */
630 error ("No current frame");
631 step_frame_id
= get_frame_id (frame
);
632 step_sp
= read_sp ();
636 find_pc_line_pc_range (stop_pc
, &step_range_start
, &step_range_end
);
637 if (step_range_end
== 0)
640 if (find_pc_partial_function (stop_pc
, &name
, &step_range_start
,
641 &step_range_end
) == 0)
642 error ("Cannot find bounds of current function");
644 target_terminal_ours ();
646 Single stepping until exit from function %s, \n\
647 which has no line number information.\n", name
);
652 /* Say we are stepping, but stop after one insn whatever it does. */
653 step_range_start
= step_range_end
= 1;
654 if (!skip_subroutines
)
656 Don't step over function calls, not even to functions lacking
658 step_over_calls
= STEP_OVER_NONE
;
661 if (skip_subroutines
)
662 step_over_calls
= STEP_OVER_ALL
;
664 step_multi
= (count
> 1);
665 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
670 /* FIXME: On nexti, this may have already been done (when we hit the
671 step resume break, I think). Probably this should be moved to
672 wait_for_inferior (near the top). */
673 #if defined (SHIFT_INST_REGS)
678 if (!single_inst
|| skip_subroutines
)
679 do_cleanups (cleanups
);
682 /* In case of asynchronous target things get complicated, do only
683 one step for now, before returning control to the event loop. Let
684 the continuation figure out how many other steps we need to do,
685 and handle them one at the time, through step_once(). */
688 if (event_loop_p
&& target_can_async_p ())
689 step_once (skip_subroutines
, single_inst
, count
);
693 /* Called after we are done with one step operation, to check whether
694 we need to step again, before we print the prompt and return control
695 to the user. If count is > 1, we will need to do one more call to
696 proceed(), via step_once(). Basically it is like step_once and
697 step_1_continuation are co-recursive. */
699 step_1_continuation (struct continuation_arg
*arg
)
702 int skip_subroutines
;
705 skip_subroutines
= arg
->data
.integer
;
706 single_inst
= arg
->next
->data
.integer
;
707 count
= arg
->next
->next
->data
.integer
;
711 /* FIXME: On nexti, this may have already been done (when we hit the
712 step resume break, I think). Probably this should be moved to
713 wait_for_inferior (near the top). */
714 #if defined (SHIFT_INST_REGS)
717 step_once (skip_subroutines
, single_inst
, count
- 1);
720 if (!single_inst
|| skip_subroutines
)
721 do_exec_cleanups (ALL_CLEANUPS
);
724 /* Do just one step operation. If count >1 we will have to set up a
725 continuation to be done after the target stops (after this one
726 step). This is useful to implement the 'step n' kind of commands, in
727 case of asynchronous targets. We had to split step_1 into two parts,
728 one to be done before proceed() and one afterwards. This function is
729 called in case of step n with n>1, after the first step operation has
732 step_once (int skip_subroutines
, int single_inst
, int count
)
734 struct continuation_arg
*arg1
;
735 struct continuation_arg
*arg2
;
736 struct continuation_arg
*arg3
;
737 struct frame_info
*frame
;
741 clear_proceed_status ();
743 frame
= get_current_frame ();
744 if (!frame
) /* Avoid coredump here. Why tho? */
745 error ("No current frame");
746 step_frame_id
= get_frame_id (frame
);
747 step_sp
= read_sp ();
751 find_pc_line_pc_range (stop_pc
, &step_range_start
, &step_range_end
);
753 /* If we have no line info, switch to stepi mode. */
754 if (step_range_end
== 0 && step_stop_if_no_debug
)
756 step_range_start
= step_range_end
= 1;
758 else if (step_range_end
== 0)
761 if (find_pc_partial_function (stop_pc
, &name
, &step_range_start
,
762 &step_range_end
) == 0)
763 error ("Cannot find bounds of current function");
765 target_terminal_ours ();
767 Single stepping until exit from function %s, \n\
768 which has no line number information.\n", name
);
773 /* Say we are stepping, but stop after one insn whatever it does. */
774 step_range_start
= step_range_end
= 1;
775 if (!skip_subroutines
)
777 Don't step over function calls, not even to functions lacking
779 step_over_calls
= STEP_OVER_NONE
;
782 if (skip_subroutines
)
783 step_over_calls
= STEP_OVER_ALL
;
785 step_multi
= (count
> 1);
787 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
789 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
791 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
793 arg1
->data
.integer
= skip_subroutines
;
795 arg2
->data
.integer
= single_inst
;
797 arg3
->data
.integer
= count
;
798 add_intermediate_continuation (step_1_continuation
, arg1
);
799 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
804 /* Continue program at specified address. */
807 jump_command (char *arg
, int from_tty
)
809 register CORE_ADDR addr
;
810 struct symtabs_and_lines sals
;
811 struct symtab_and_line sal
;
818 /* Find out whether we must run in the background. */
820 async_exec
= strip_bg_char (&arg
);
822 /* If we must run in the background, but the target can't do it,
824 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
825 error ("Asynchronous execution not supported on this target.");
827 /* If we are not asked to run in the bg, then prepare to run in the
828 foreground, synchronously. */
829 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
831 /* Simulate synchronous execution */
832 async_disable_stdin ();
836 error_no_arg ("starting address");
838 sals
= decode_line_spec_1 (arg
, 1);
841 error ("Unreasonable jump request");
847 if (sal
.symtab
== 0 && sal
.pc
== 0)
848 error ("No source file has been specified.");
850 resolve_sal_pc (&sal
); /* May error out */
852 /* See if we are trying to jump to another function. */
853 fn
= get_frame_function (get_current_frame ());
854 sfn
= find_pc_function (sal
.pc
);
855 if (fn
!= NULL
&& sfn
!= fn
)
857 if (!query ("Line %d is not in `%s'. Jump anyway? ", sal
.line
,
858 SYMBOL_PRINT_NAME (fn
)))
860 error ("Not confirmed.");
867 fixup_symbol_section (sfn
, 0);
868 if (section_is_overlay (SYMBOL_BFD_SECTION (sfn
)) &&
869 !section_is_mapped (SYMBOL_BFD_SECTION (sfn
)))
871 if (!query ("WARNING!!! Destination is in unmapped overlay! Jump anyway? "))
873 error ("Not confirmed.");
883 printf_filtered ("Continuing at ");
884 print_address_numeric (addr
, 1, gdb_stdout
);
885 printf_filtered (".\n");
888 clear_proceed_status ();
889 proceed (addr
, TARGET_SIGNAL_0
, 0);
893 /* Go to line or address in current procedure */
895 go_command (char *line_no
, int from_tty
)
897 if (line_no
== (char *) NULL
|| !*line_no
)
898 printf_filtered (GO_USAGE
);
901 tbreak_command (line_no
, from_tty
);
902 jump_command (line_no
, from_tty
);
907 /* Continue program giving it specified signal. */
910 signal_command (char *signum_exp
, int from_tty
)
912 enum target_signal oursig
;
914 dont_repeat (); /* Too dangerous. */
918 error_no_arg ("signal number");
920 /* It would be even slicker to make signal names be valid expressions,
921 (the type could be "enum $signal" or some such), then the user could
922 assign them to convenience variables. */
923 oursig
= target_signal_from_name (signum_exp
);
925 if (oursig
== TARGET_SIGNAL_UNKNOWN
)
927 /* No, try numeric. */
928 int num
= parse_and_eval_long (signum_exp
);
931 oursig
= TARGET_SIGNAL_0
;
933 oursig
= target_signal_from_command (num
);
938 if (oursig
== TARGET_SIGNAL_0
)
939 printf_filtered ("Continuing with no signal.\n");
941 printf_filtered ("Continuing with signal %s.\n",
942 target_signal_to_name (oursig
));
945 clear_proceed_status ();
946 /* "signal 0" should not get stuck if we are stopped at a breakpoint.
947 FIXME: Neither should "signal foo" but when I tried passing
948 (CORE_ADDR)-1 unconditionally I got a testsuite failure which I haven't
949 tried to track down yet. */
950 proceed (oursig
== TARGET_SIGNAL_0
? (CORE_ADDR
) -1 : stop_pc
, oursig
, 0);
953 /* Proceed until we reach a different source line with pc greater than
954 our current one or exit the function. We skip calls in both cases.
956 Note that eventually this command should probably be changed so
957 that only source lines are printed out when we hit the breakpoint
958 we set. This may involve changes to wait_for_inferior and the
959 proceed status code. */
963 until_next_command (int from_tty
)
965 struct frame_info
*frame
;
968 struct symtab_and_line sal
;
970 clear_proceed_status ();
972 frame
= get_current_frame ();
974 /* Step until either exited from this function or greater
975 than the current line (if in symbolic section) or pc (if
979 func
= find_pc_function (pc
);
983 struct minimal_symbol
*msymbol
= lookup_minimal_symbol_by_pc (pc
);
986 error ("Execution is not within a known function.");
988 step_range_start
= SYMBOL_VALUE_ADDRESS (msymbol
);
993 sal
= find_pc_line (pc
, 0);
995 step_range_start
= BLOCK_START (SYMBOL_BLOCK_VALUE (func
));
996 step_range_end
= sal
.end
;
999 step_over_calls
= STEP_OVER_ALL
;
1000 step_frame_id
= get_frame_id (frame
);
1001 step_sp
= read_sp ();
1003 step_multi
= 0; /* Only one call to proceed */
1005 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
1009 until_command (char *arg
, int from_tty
)
1013 if (!target_has_execution
)
1014 error ("The program is not running.");
1016 /* Find out whether we must run in the background. */
1018 async_exec
= strip_bg_char (&arg
);
1020 /* If we must run in the background, but the target can't do it,
1022 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
1023 error ("Asynchronous execution not supported on this target.");
1025 /* If we are not asked to run in the bg, then prepare to run in the
1026 foreground, synchronously. */
1027 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
1029 /* Simulate synchronous execution */
1030 async_disable_stdin ();
1034 until_break_command (arg
, from_tty
, 0);
1036 until_next_command (from_tty
);
1040 advance_command (char *arg
, int from_tty
)
1044 if (!target_has_execution
)
1045 error ("The program is not running.");
1048 error_no_arg ("a location");
1050 /* Find out whether we must run in the background. */
1052 async_exec
= strip_bg_char (&arg
);
1054 /* If we must run in the background, but the target can't do it,
1056 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
1057 error ("Asynchronous execution not supported on this target.");
1059 /* If we are not asked to run in the bg, then prepare to run in the
1060 foreground, synchronously. */
1061 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
1063 /* Simulate synchronous execution. */
1064 async_disable_stdin ();
1067 until_break_command (arg
, from_tty
, 1);
1071 /* Print the result of a function at the end of a 'finish' command. */
1073 print_return_value (int structure_return
, struct type
*value_type
)
1075 struct value
*value
;
1076 static struct ui_stream
*stb
= NULL
;
1078 if (!structure_return
)
1080 value
= value_being_returned (value_type
, stop_registers
, structure_return
);
1081 stb
= ui_out_stream_new (uiout
);
1082 ui_out_text (uiout
, "Value returned is ");
1083 ui_out_field_fmt (uiout
, "gdb-result-var", "$%d", record_latest_value (value
));
1084 ui_out_text (uiout
, " = ");
1085 value_print (value
, stb
->stream
, 0, Val_no_prettyprint
);
1086 ui_out_field_stream (uiout
, "return-value", stb
);
1087 ui_out_text (uiout
, "\n");
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 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 value
= value_being_returned (value_type
, stop_registers
, structure_return
);
1102 stb
= ui_out_stream_new (uiout
);
1103 ui_out_text (uiout
, "Value returned is ");
1104 ui_out_field_fmt (uiout
, "gdb-result-var", "$%d", record_latest_value (value
));
1105 ui_out_text (uiout
, " = ");
1106 value_print (value
, stb
->stream
, 0, Val_no_prettyprint
);
1107 ui_out_field_stream (uiout
, "return-value", stb
);
1108 ui_out_text (uiout
, "\n");
1113 /* Stuff that needs to be done by the finish command after the target
1114 has stopped. In asynchronous mode, we wait for the target to stop in
1115 the call to poll or select in the event loop, so it is impossible to
1116 do all the stuff as part of the finish_command function itself. The
1117 only chance we have to complete this command is in
1118 fetch_inferior_event, which is called by the event loop as soon as it
1119 detects that the target has stopped. This function is called via the
1120 cmd_continuation pointer. */
1122 finish_command_continuation (struct continuation_arg
*arg
)
1124 register struct symbol
*function
;
1125 struct breakpoint
*breakpoint
;
1126 struct cleanup
*cleanups
;
1128 breakpoint
= (struct breakpoint
*) arg
->data
.pointer
;
1129 function
= (struct symbol
*) arg
->next
->data
.pointer
;
1130 cleanups
= (struct cleanup
*) arg
->next
->next
->data
.pointer
;
1132 if (bpstat_find_breakpoint (stop_bpstat
, breakpoint
) != NULL
1135 struct type
*value_type
;
1139 value_type
= TYPE_TARGET_TYPE (SYMBOL_TYPE (function
));
1141 internal_error (__FILE__
, __LINE__
,
1142 "finish_command: function has no target type");
1144 if (TYPE_CODE (value_type
) == TYPE_CODE_VOID
)
1146 do_exec_cleanups (cleanups
);
1150 funcaddr
= BLOCK_START (SYMBOL_BLOCK_VALUE (function
));
1152 struct_return
= using_struct_return (value_of_variable (function
, NULL
),
1154 check_typedef (value_type
),
1155 BLOCK_GCC_COMPILED (SYMBOL_BLOCK_VALUE (function
)));
1157 print_return_value (struct_return
, value_type
);
1159 do_exec_cleanups (cleanups
);
1162 /* "finish": Set a temporary breakpoint at the place
1163 the selected frame will return to, then continue. */
1166 finish_command (char *arg
, int from_tty
)
1168 struct symtab_and_line sal
;
1169 register struct frame_info
*frame
;
1170 register struct symbol
*function
;
1171 struct breakpoint
*breakpoint
;
1172 struct cleanup
*old_chain
;
1173 struct continuation_arg
*arg1
, *arg2
, *arg3
;
1177 /* Find out whether we must run in the background. */
1179 async_exec
= strip_bg_char (&arg
);
1181 /* If we must run in the background, but the target can't do it,
1183 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
1184 error ("Asynchronous execution not supported on this target.");
1186 /* If we are not asked to run in the bg, then prepare to run in the
1187 foreground, synchronously. */
1188 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
1190 /* Simulate synchronous execution */
1191 async_disable_stdin ();
1195 error ("The \"finish\" command does not take any arguments.");
1196 if (!target_has_execution
)
1197 error ("The program is not running.");
1198 if (deprecated_selected_frame
== NULL
)
1199 error ("No selected frame.");
1201 frame
= get_prev_frame (deprecated_selected_frame
);
1203 error ("\"finish\" not meaningful in the outermost frame.");
1205 clear_proceed_status ();
1207 sal
= find_pc_line (get_frame_pc (frame
), 0);
1208 sal
.pc
= get_frame_pc (frame
);
1210 breakpoint
= set_momentary_breakpoint (sal
, get_frame_id (frame
), bp_finish
);
1212 if (!event_loop_p
|| !target_can_async_p ())
1213 old_chain
= make_cleanup_delete_breakpoint (breakpoint
);
1215 old_chain
= make_exec_cleanup_delete_breakpoint (breakpoint
);
1217 /* Find the function we will return from. */
1219 function
= find_pc_function (get_frame_pc (deprecated_selected_frame
));
1221 /* Print info on the selected frame, including level number
1225 printf_filtered ("Run till exit from ");
1226 print_stack_frame (deprecated_selected_frame
,
1227 frame_relative_level (deprecated_selected_frame
), 0);
1230 /* If running asynchronously and the target support asynchronous
1231 execution, set things up for the rest of the finish command to be
1232 completed later on, when gdb has detected that the target has
1233 stopped, in fetch_inferior_event. */
1234 if (event_loop_p
&& target_can_async_p ())
1237 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
1239 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
1241 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
1245 arg1
->data
.pointer
= breakpoint
;
1246 arg2
->data
.pointer
= function
;
1247 arg3
->data
.pointer
= old_chain
;
1248 add_continuation (finish_command_continuation
, arg1
);
1251 proceed_to_finish
= 1; /* We want stop_registers, please... */
1252 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
1254 /* Do this only if not running asynchronously or if the target
1255 cannot do async execution. Otherwise, complete this command when
1256 the target actually stops, in fetch_inferior_event. */
1257 if (!event_loop_p
|| !target_can_async_p ())
1260 /* Did we stop at our breakpoint? */
1261 if (bpstat_find_breakpoint (stop_bpstat
, breakpoint
) != NULL
1264 struct type
*value_type
;
1268 value_type
= TYPE_TARGET_TYPE (SYMBOL_TYPE (function
));
1270 internal_error (__FILE__
, __LINE__
,
1271 "finish_command: function has no target type");
1273 /* FIXME: Shouldn't we do the cleanups before returning? */
1274 if (TYPE_CODE (value_type
) == TYPE_CODE_VOID
)
1277 funcaddr
= BLOCK_START (SYMBOL_BLOCK_VALUE (function
));
1280 using_struct_return (value_of_variable (function
, NULL
),
1282 check_typedef (value_type
),
1283 BLOCK_GCC_COMPILED (SYMBOL_BLOCK_VALUE (function
)));
1285 print_return_value (struct_return
, value_type
);
1287 do_cleanups (old_chain
);
1293 program_info (char *args
, int from_tty
)
1295 bpstat bs
= stop_bpstat
;
1296 int num
= bpstat_num (&bs
);
1298 if (!target_has_execution
)
1300 printf_filtered ("The program being debugged is not being run.\n");
1304 target_files_info ();
1305 printf_filtered ("Program stopped at %s.\n",
1306 local_hex_string ((unsigned long) stop_pc
));
1308 printf_filtered ("It stopped after being stepped.\n");
1311 /* There may be several breakpoints in the same place, so this
1312 isn't as strange as it seems. */
1317 printf_filtered ("It stopped at a breakpoint that has ");
1318 printf_filtered ("since been deleted.\n");
1321 printf_filtered ("It stopped at breakpoint %d.\n", num
);
1322 num
= bpstat_num (&bs
);
1325 else if (stop_signal
!= TARGET_SIGNAL_0
)
1327 printf_filtered ("It stopped with signal %s, %s.\n",
1328 target_signal_to_name (stop_signal
),
1329 target_signal_to_string (stop_signal
));
1334 printf_filtered ("Type \"info stack\" or \"info registers\" ");
1335 printf_filtered ("for more information.\n");
1340 environment_info (char *var
, int from_tty
)
1344 register char *val
= get_in_environ (inferior_environ
, var
);
1347 puts_filtered (var
);
1348 puts_filtered (" = ");
1349 puts_filtered (val
);
1350 puts_filtered ("\n");
1354 puts_filtered ("Environment variable \"");
1355 puts_filtered (var
);
1356 puts_filtered ("\" not defined.\n");
1361 register char **vector
= environ_vector (inferior_environ
);
1364 puts_filtered (*vector
++);
1365 puts_filtered ("\n");
1371 set_environment_command (char *arg
, int from_tty
)
1373 register char *p
, *val
, *var
;
1377 error_no_arg ("environment variable and value");
1379 /* Find seperation between variable name and value */
1380 p
= (char *) strchr (arg
, '=');
1381 val
= (char *) strchr (arg
, ' ');
1383 if (p
!= 0 && val
!= 0)
1385 /* We have both a space and an equals. If the space is before the
1386 equals, walk forward over the spaces til we see a nonspace
1387 (possibly the equals). */
1392 /* Now if the = is after the char following the spaces,
1393 take the char following the spaces. */
1397 else if (val
!= 0 && p
== 0)
1401 error_no_arg ("environment variable to set");
1403 if (p
== 0 || p
[1] == 0)
1407 p
= arg
+ strlen (arg
); /* So that savestring below will work */
1411 /* Not setting variable value to null */
1413 while (*val
== ' ' || *val
== '\t')
1417 while (p
!= arg
&& (p
[-1] == ' ' || p
[-1] == '\t'))
1420 var
= savestring (arg
, p
- arg
);
1423 printf_filtered ("Setting environment variable ");
1424 printf_filtered ("\"%s\" to null value.\n", var
);
1425 set_in_environ (inferior_environ
, var
, "");
1428 set_in_environ (inferior_environ
, var
, val
);
1433 unset_environment_command (char *var
, int from_tty
)
1437 /* If there is no argument, delete all environment variables.
1438 Ask for confirmation if reading from the terminal. */
1439 if (!from_tty
|| query ("Delete all environment variables? "))
1441 free_environ (inferior_environ
);
1442 inferior_environ
= make_environ ();
1446 unset_in_environ (inferior_environ
, var
);
1449 /* Handle the execution path (PATH variable) */
1451 static const char path_var_name
[] = "PATH";
1455 path_info (char *args
, int from_tty
)
1457 puts_filtered ("Executable and object file path: ");
1458 puts_filtered (get_in_environ (inferior_environ
, path_var_name
));
1459 puts_filtered ("\n");
1462 /* Add zero or more directories to the front of the execution path. */
1465 path_command (char *dirname
, int from_tty
)
1470 env
= get_in_environ (inferior_environ
, path_var_name
);
1471 /* Can be null if path is not set */
1474 exec_path
= xstrdup (env
);
1475 mod_path (dirname
, &exec_path
);
1476 set_in_environ (inferior_environ
, path_var_name
, exec_path
);
1479 path_info ((char *) NULL
, from_tty
);
1483 #ifdef REGISTER_NAMES
1484 char *gdb_register_names
[] = REGISTER_NAMES
;
1486 /* Print out the machine register regnum. If regnum is -1, print all
1487 registers (print_all == 1) or all non-float and non-vector
1488 registers (print_all == 0).
1490 For most machines, having all_registers_info() print the
1491 register(s) one per line is good enough. If a different format is
1492 required, (eg, for MIPS or Pyramid 90x, which both have lots of
1493 regs), or there is an existing convention for showing all the
1494 registers, define the architecture method PRINT_REGISTERS_INFO to
1495 provide that format. */
1498 default_print_registers_info (struct gdbarch
*gdbarch
,
1499 struct ui_file
*file
,
1500 struct frame_info
*frame
,
1501 int regnum
, int print_all
)
1504 const int numregs
= NUM_REGS
+ NUM_PSEUDO_REGS
;
1505 char raw_buffer
[MAX_REGISTER_SIZE
];
1506 char virtual_buffer
[MAX_REGISTER_SIZE
];
1508 if (DEPRECATED_DO_REGISTERS_INFO_P ())
1510 DEPRECATED_DO_REGISTERS_INFO (regnum
, print_all
);
1514 for (i
= 0; i
< numregs
; i
++)
1516 /* Decide between printing all regs, non-float / vector regs, or
1522 if (!gdbarch_register_reggroup_p (gdbarch
, i
, all_reggroup
))
1527 if (!gdbarch_register_reggroup_p (gdbarch
, i
, general_reggroup
))
1537 /* If the register name is empty, it is undefined for this
1538 processor, so don't display anything. */
1539 if (REGISTER_NAME (i
) == NULL
|| *(REGISTER_NAME (i
)) == '\0')
1542 fputs_filtered (REGISTER_NAME (i
), file
);
1543 print_spaces_filtered (15 - strlen (REGISTER_NAME (i
)), file
);
1545 /* Get the data in raw format. */
1546 if (! frame_register_read (frame
, i
, raw_buffer
))
1548 fprintf_filtered (file
, "*value not available*\n");
1552 /* FIXME: cagney/2002-08-03: This code shouldn't be necessary.
1553 The function frame_register_read() should have returned the
1554 pre-cooked register so no conversion is necessary. */
1555 /* Convert raw data to virtual format if necessary. */
1556 if (DEPRECATED_REGISTER_CONVERTIBLE (i
))
1558 DEPRECATED_REGISTER_CONVERT_TO_VIRTUAL (i
, register_type (current_gdbarch
, i
),
1559 raw_buffer
, virtual_buffer
);
1563 memcpy (virtual_buffer
, raw_buffer
,
1564 REGISTER_VIRTUAL_SIZE (i
));
1567 /* If virtual format is floating, print it that way, and in raw
1569 if (TYPE_CODE (register_type (current_gdbarch
, i
)) == TYPE_CODE_FLT
)
1573 val_print (register_type (current_gdbarch
, i
), virtual_buffer
, 0, 0,
1574 file
, 0, 1, 0, Val_pretty_default
);
1576 fprintf_filtered (file
, "\t(raw 0x");
1577 for (j
= 0; j
< REGISTER_RAW_SIZE (i
); j
++)
1580 if (TARGET_BYTE_ORDER
== BFD_ENDIAN_BIG
)
1583 idx
= REGISTER_RAW_SIZE (i
) - 1 - j
;
1584 fprintf_filtered (file
, "%02x", (unsigned char) raw_buffer
[idx
]);
1586 fprintf_filtered (file
, ")");
1590 /* Print the register in hex. */
1591 val_print (register_type (current_gdbarch
, i
), virtual_buffer
, 0, 0,
1592 file
, 'x', 1, 0, Val_pretty_default
);
1593 /* If not a vector register, print it also according to its
1595 if (TYPE_VECTOR (register_type (current_gdbarch
, i
)) == 0)
1597 fprintf_filtered (file
, "\t");
1598 val_print (register_type (current_gdbarch
, i
), virtual_buffer
, 0, 0,
1599 file
, 0, 1, 0, Val_pretty_default
);
1603 fprintf_filtered (file
, "\n");
1608 registers_info (char *addr_exp
, int fpregs
)
1610 int regnum
, numregs
;
1613 if (!target_has_registers
)
1614 error ("The program has no registers now.");
1615 if (deprecated_selected_frame
== NULL
)
1616 error ("No selected frame.");
1620 gdbarch_print_registers_info (current_gdbarch
, gdb_stdout
,
1621 deprecated_selected_frame
, -1, fpregs
);
1625 while (*addr_exp
!= '\0')
1630 /* Keep skipping leading white space. */
1631 if (isspace ((*addr_exp
)))
1637 /* Discard any leading ``$''. Check that there is something
1638 resembling a register following it. */
1639 if (addr_exp
[0] == '$')
1641 if (isspace ((*addr_exp
)) || (*addr_exp
) == '\0')
1642 error ("Missing register name");
1644 /* Find the start/end of this register name/num/group. */
1646 while ((*addr_exp
) != '\0' && !isspace ((*addr_exp
)))
1650 /* Figure out what we've found and display it. */
1652 /* A register name? */
1654 int regnum
= frame_map_name_to_regnum (deprecated_selected_frame
,
1655 start
, end
- start
);
1658 gdbarch_print_registers_info (current_gdbarch
, gdb_stdout
,
1659 deprecated_selected_frame
, regnum
, fpregs
);
1664 /* A register number? (how portable is this one?). */
1667 int regnum
= strtol (start
, &endptr
, 0);
1670 && regnum
< NUM_REGS
+ NUM_PSEUDO_REGS
)
1672 gdbarch_print_registers_info (current_gdbarch
, gdb_stdout
,
1673 deprecated_selected_frame
, regnum
, fpregs
);
1678 /* A register group? */
1680 struct reggroup
*group
;
1681 for (group
= reggroup_next (current_gdbarch
, NULL
);
1683 group
= reggroup_next (current_gdbarch
, group
))
1685 /* Don't bother with a length check. Should the user
1686 enter a short register group name, go with the first
1687 group that matches. */
1688 if (strncmp (start
, reggroup_name (group
), end
- start
) == 0)
1694 for (regnum
= 0; regnum
< NUM_REGS
+ NUM_PSEUDO_REGS
; regnum
++)
1696 if (gdbarch_register_reggroup_p (current_gdbarch
, regnum
,
1698 gdbarch_print_registers_info (current_gdbarch
,
1699 gdb_stdout
, deprecated_selected_frame
,
1706 /* Nothing matched. */
1707 error ("Invalid register `%.*s'", (int) (end
- start
), start
);
1712 all_registers_info (char *addr_exp
, int from_tty
)
1714 registers_info (addr_exp
, 1);
1718 nofp_registers_info (char *addr_exp
, int from_tty
)
1720 registers_info (addr_exp
, 0);
1724 print_vector_info (struct gdbarch
*gdbarch
, struct ui_file
*file
,
1725 struct frame_info
*frame
, const char *args
)
1727 if (!target_has_registers
)
1728 error ("The program has no registers now.");
1729 if (deprecated_selected_frame
== NULL
)
1730 error ("No selected frame.");
1732 if (gdbarch_print_vector_info_p (gdbarch
))
1733 gdbarch_print_vector_info (gdbarch
, file
, frame
, args
);
1737 int printed_something
= 0;
1739 for (regnum
= 0; regnum
< NUM_REGS
+ NUM_PSEUDO_REGS
; regnum
++)
1741 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, vector_reggroup
))
1743 printed_something
= 1;
1744 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
1747 if (!printed_something
)
1748 fprintf_filtered (file
, "No vector information\n");
1753 vector_info (char *args
, int from_tty
)
1755 print_vector_info (current_gdbarch
, gdb_stdout
, deprecated_selected_frame
, args
);
1761 * Should save/restore the tty state since it might be that the
1762 * program to be debugged was started on this tty and it wants
1763 * the tty in some state other than what we want. If it's running
1764 * on another terminal or without a terminal, then saving and
1765 * restoring the tty state is a harmless no-op.
1766 * This only needs to be done if we are attaching to a process.
1771 takes a program started up outside of gdb and ``attaches'' to it.
1772 This stops it cold in its tracks and allows us to start debugging it.
1773 and wait for the trace-trap that results from attaching. */
1776 attach_command (char *args
, int from_tty
)
1779 char *full_exec_path
= NULL
;
1781 dont_repeat (); /* Not for the faint of heart */
1783 if (target_has_execution
)
1785 if (query ("A program is being debugged already. Kill it? "))
1788 error ("Not killed.");
1791 target_attach (args
, from_tty
);
1793 /* Set up the "saved terminal modes" of the inferior
1794 based on what modes we are starting it with. */
1795 target_terminal_init ();
1797 /* Install inferior's terminal modes. */
1798 target_terminal_inferior ();
1800 /* Set up execution context to know that we should return from
1801 wait_for_inferior as soon as the target reports a stop. */
1802 init_wait_for_inferior ();
1803 clear_proceed_status ();
1805 /* No traps are generated when attaching to inferior under Mach 3
1807 #ifndef ATTACH_NO_WAIT
1808 /* Careful here. See comments in inferior.h. Basically some OSes
1809 don't ignore SIGSTOPs on continue requests anymore. We need a
1810 way for handle_inferior_event to reset the stop_signal variable
1811 after an attach, and this is what STOP_QUIETLY_NO_SIGSTOP is for. */
1812 stop_soon
= STOP_QUIETLY_NO_SIGSTOP
;
1813 wait_for_inferior ();
1814 stop_soon
= NO_STOP_QUIETLY
;
1818 * If no exec file is yet known, try to determine it from the
1821 exec_file
= (char *) get_exec_file (0);
1824 exec_file
= target_pid_to_exec_file (PIDGET (inferior_ptid
));
1827 /* It's possible we don't have a full path, but rather just a
1828 filename. Some targets, such as HP-UX, don't provide the
1831 Attempt to qualify the filename against the source path.
1832 (If that fails, we'll just fall back on the original
1833 filename. Not much more we can do...)
1835 if (!source_full_path_of (exec_file
, &full_exec_path
))
1836 full_exec_path
= savestring (exec_file
, strlen (exec_file
));
1838 exec_file_attach (full_exec_path
, from_tty
);
1839 symbol_file_add_main (full_exec_path
, from_tty
);
1844 /* Add shared library symbols from the newly attached process, if any. */
1845 SOLIB_ADD ((char *) 0, from_tty
, ¤t_target
, auto_solib_add
);
1846 re_enable_breakpoints_in_shlibs ();
1849 /* Take any necessary post-attaching actions for this platform.
1851 target_post_attach (PIDGET (inferior_ptid
));
1861 * takes a program previously attached to and detaches it.
1862 * The program resumes execution and will no longer stop
1863 * on signals, etc. We better not have left any breakpoints
1864 * in the program or it'll die when it hits one. For this
1865 * to work, it may be necessary for the process to have been
1866 * previously attached. It *might* work if the program was
1867 * started via the normal ptrace (PTRACE_TRACEME).
1871 detach_command (char *args
, int from_tty
)
1873 dont_repeat (); /* Not for the faint of heart */
1874 target_detach (args
, from_tty
);
1875 #if defined(SOLIB_RESTART)
1882 /* Disconnect from the current target without resuming it (leaving it
1883 waiting for a debugger).
1885 We'd better not have left any breakpoints in the program or the
1886 next debugger will get confused. Currently only supported for some
1887 remote targets, since the normal attach mechanisms don't work on
1888 stopped processes on some native platforms (e.g. GNU/Linux). */
1891 disconnect_command (char *args
, int from_tty
)
1893 dont_repeat (); /* Not for the faint of heart */
1894 target_disconnect (args
, from_tty
);
1895 #if defined(SOLIB_RESTART)
1902 /* Stop the execution of the target while running in async mode, in
1905 interrupt_target_command (char *args
, int from_tty
)
1907 if (event_loop_p
&& target_can_async_p ())
1909 dont_repeat (); /* Not for the faint of heart */
1916 print_float_info (struct gdbarch
*gdbarch
, struct ui_file
*file
,
1917 struct frame_info
*frame
, const char *args
)
1919 if (!target_has_registers
)
1920 error ("The program has no registers now.");
1921 if (deprecated_selected_frame
== NULL
)
1922 error ("No selected frame.");
1924 if (gdbarch_print_float_info_p (gdbarch
))
1925 gdbarch_print_float_info (gdbarch
, file
, frame
, args
);
1929 int printed_something
= 0;
1931 for (regnum
= 0; regnum
< NUM_REGS
+ NUM_PSEUDO_REGS
; regnum
++)
1933 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, float_reggroup
))
1935 printed_something
= 1;
1936 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
1939 if (!printed_something
)
1940 fprintf_filtered (file
, "\
1941 No floating-point info available for this processor.\n");
1946 float_info (char *args
, int from_tty
)
1948 print_float_info (current_gdbarch
, gdb_stdout
, deprecated_selected_frame
, args
);
1953 unset_command (char *args
, int from_tty
)
1955 printf_filtered ("\"unset\" must be followed by the name of ");
1956 printf_filtered ("an unset subcommand.\n");
1957 help_list (unsetlist
, "unset ", -1, gdb_stdout
);
1961 _initialize_infcmd (void)
1963 struct cmd_list_element
*c
;
1965 c
= add_com ("tty", class_run
, tty_command
,
1966 "Set terminal for future runs of program being debugged.");
1967 set_cmd_completer (c
, filename_completer
);
1969 c
= add_set_cmd ("args", class_run
, var_string_noescape
,
1970 (char *) &inferior_args
,
1971 "Set argument list to give program being debugged when it is started.\n\
1972 Follow this command with any number of args, to be passed to the program.",
1974 set_cmd_completer (c
, filename_completer
);
1975 set_cmd_sfunc (c
, notice_args_set
);
1976 c
= add_show_from_set (c
, &showlist
);
1977 set_cmd_sfunc (c
, notice_args_read
);
1980 ("environment", no_class
, environment_info
,
1981 "The environment to give the program, or one variable's value.\n\
1982 With an argument VAR, prints the value of environment variable VAR to\n\
1983 give the program being debugged. With no arguments, prints the entire\n\
1984 environment to be given to the program.", &showlist
);
1985 set_cmd_completer (c
, noop_completer
);
1987 add_prefix_cmd ("unset", no_class
, unset_command
,
1988 "Complement to certain \"set\" commands.",
1989 &unsetlist
, "unset ", 0, &cmdlist
);
1991 c
= add_cmd ("environment", class_run
, unset_environment_command
,
1992 "Cancel environment variable VAR for the program.\n\
1993 This does not affect the program until the next \"run\" command.",
1995 set_cmd_completer (c
, noop_completer
);
1997 c
= add_cmd ("environment", class_run
, set_environment_command
,
1998 "Set environment variable value to give the program.\n\
1999 Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\
2000 VALUES of environment variables are uninterpreted strings.\n\
2001 This does not affect the program until the next \"run\" command.",
2003 set_cmd_completer (c
, noop_completer
);
2005 c
= add_com ("path", class_files
, path_command
,
2006 "Add directory DIR(s) to beginning of search path for object files.\n\
2007 $cwd in the path means the current working directory.\n\
2008 This path is equivalent to the $PATH shell variable. It is a list of\n\
2009 directories, separated by colons. These directories are searched to find\n\
2010 fully linked executable files and separately compiled object files as needed.");
2011 set_cmd_completer (c
, filename_completer
);
2013 c
= add_cmd ("paths", no_class
, path_info
,
2014 "Current search path for finding object files.\n\
2015 $cwd in the path means the current working directory.\n\
2016 This path is equivalent to the $PATH shell variable. It is a list of\n\
2017 directories, separated by colons. These directories are searched to find\n\
2018 fully linked executable files and separately compiled object files as needed.",
2020 set_cmd_completer (c
, noop_completer
);
2022 add_com ("attach", class_run
, attach_command
,
2023 "Attach to a process or file outside of GDB.\n\
2024 This command attaches to another target, of the same type as your last\n\
2025 \"target\" command (\"info files\" will show your target stack).\n\
2026 The command may take as argument a process id or a device file.\n\
2027 For a process id, you must have permission to send the process a signal,\n\
2028 and it must have the same effective uid as the debugger.\n\
2029 When using \"attach\" with a process id, the debugger finds the\n\
2030 program running in the process, looking first in the current working\n\
2031 directory, or (if not found there) using the source file search path\n\
2032 (see the \"directory\" command). You can also use the \"file\" command\n\
2033 to specify the program, and to load its symbol table.");
2035 add_com ("detach", class_run
, detach_command
,
2036 "Detach a process or file previously attached.\n\
2037 If a process, it is no longer traced, and it continues its execution. If\n\
2038 you were debugging a file, the file is closed and gdb no longer accesses it.");
2040 add_com ("disconnect", class_run
, disconnect_command
,
2041 "Disconnect from a target.\n\
2042 The target will wait for another debugger to connect. Not available for\n\
2045 add_com ("signal", class_run
, signal_command
,
2046 "Continue program giving it signal specified by the argument.\n\
2047 An argument of \"0\" means continue program without giving it a signal.");
2049 add_com ("stepi", class_run
, stepi_command
,
2050 "Step one instruction exactly.\n\
2051 Argument N means do this N times (or till program stops for another reason).");
2052 add_com_alias ("si", "stepi", class_alias
, 0);
2054 add_com ("nexti", class_run
, nexti_command
,
2055 "Step one instruction, but proceed through subroutine calls.\n\
2056 Argument N means do this N times (or till program stops for another reason).");
2057 add_com_alias ("ni", "nexti", class_alias
, 0);
2059 add_com ("finish", class_run
, finish_command
,
2060 "Execute until selected stack frame returns.\n\
2061 Upon return, the value returned is printed and put in the value history.");
2063 add_com ("next", class_run
, next_command
,
2064 "Step program, proceeding through subroutine calls.\n\
2065 Like the \"step\" command as long as subroutine calls do not happen;\n\
2066 when they do, the call is treated as one instruction.\n\
2067 Argument N means do this N times (or till program stops for another reason).");
2068 add_com_alias ("n", "next", class_run
, 1);
2070 add_com_alias ("S", "next", class_run
, 1);
2072 add_com ("step", class_run
, step_command
,
2073 "Step program until it reaches a different source line.\n\
2074 Argument N means do this N times (or till program stops for another reason).");
2075 add_com_alias ("s", "step", class_run
, 1);
2077 c
= add_com ("until", class_run
, until_command
,
2078 "Execute until the program reaches a source line greater than the current\n\
2079 or a specified location (same args as break command) within the current frame.");
2080 set_cmd_completer (c
, location_completer
);
2081 add_com_alias ("u", "until", class_run
, 1);
2083 c
= add_com ("advance", class_run
, advance_command
,
2084 "Continue the program up to the given location (same form as args for break command).\n\
2085 Execution will also stop upon exit from the current stack frame.");
2086 set_cmd_completer (c
, location_completer
);
2088 c
= add_com ("jump", class_run
, jump_command
,
2089 "Continue program being debugged at specified line or address.\n\
2090 Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\
2091 for an address to start at.");
2092 set_cmd_completer (c
, location_completer
);
2096 c
= add_com ("go", class_run
, go_command
,
2097 "Usage: go <location>\n\
2098 Continue program being debugged, stopping at specified line or \n\
2100 Give as argument either LINENUM or *ADDR, where ADDR is an \n\
2101 expression for an address to start at.\n\
2102 This command is a combination of tbreak and jump.");
2103 set_cmd_completer (c
, location_completer
);
2107 add_com_alias ("g", "go", class_run
, 1);
2109 add_com ("continue", class_run
, continue_command
,
2110 "Continue program being debugged, after signal or breakpoint.\n\
2111 If proceeding from breakpoint, a number N may be used as an argument,\n\
2112 which means to set the ignore count of that breakpoint to N - 1 (so that\n\
2113 the breakpoint won't break until the Nth time it is reached).");
2114 add_com_alias ("c", "cont", class_run
, 1);
2115 add_com_alias ("fg", "cont", class_run
, 1);
2117 c
= add_com ("run", class_run
, run_command
,
2118 "Start debugged program. You may specify arguments to give it.\n\
2119 Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\
2120 Input and output redirection with \">\", \"<\", or \">>\" are also allowed.\n\n\
2121 With no arguments, uses arguments last specified (with \"run\" or \"set args\").\n\
2122 To cancel previous arguments and run with no arguments,\n\
2123 use \"set args\" without arguments.");
2124 set_cmd_completer (c
, filename_completer
);
2125 add_com_alias ("r", "run", class_run
, 1);
2127 add_com ("R", class_run
, run_no_args_command
,
2128 "Start debugged program with no arguments.");
2130 add_com ("interrupt", class_run
, interrupt_target_command
,
2131 "Interrupt the execution of the debugged program.");
2133 add_info ("registers", nofp_registers_info
,
2134 "List of integer registers and their contents, for selected stack frame.\n\
2135 Register name as argument means describe only that register.");
2136 add_info_alias ("r", "registers", 1);
2139 add_com ("lr", class_info
, nofp_registers_info
,
2140 "List of integer registers and their contents, for selected stack frame.\n\
2141 Register name as argument means describe only that register.");
2142 add_info ("all-registers", all_registers_info
,
2143 "List of all registers and their contents, for selected stack frame.\n\
2144 Register name as argument means describe only that register.");
2146 add_info ("program", program_info
,
2147 "Execution status of the program.");
2149 add_info ("float", float_info
,
2150 "Print the status of the floating point unit\n");
2152 add_info ("vector", vector_info
,
2153 "Print the status of the vector unit\n");
2155 inferior_environ
= make_environ ();
2156 init_environ (inferior_environ
);