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
, 0, 0);
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",
1084 record_latest_value (value
));
1085 ui_out_text (uiout
, " = ");
1086 value_print (value
, stb
->stream
, 0, Val_no_prettyprint
);
1087 ui_out_field_stream (uiout
, "return-value", stb
);
1088 ui_out_text (uiout
, "\n");
1092 #ifdef VALUE_RETURNED_FROM_STACK
1093 /* We cannot determine the contents of the structure because it
1094 is on the stack, and we don't know where, since we did not
1095 initiate the call, as opposed to the call_function_by_hand
1098 ui_out_text (uiout
, "Value returned has type: ");
1099 ui_out_field_string (uiout
, "return-type", TYPE_NAME (value_type
));
1100 ui_out_text (uiout
, ".");
1101 ui_out_text (uiout
, " Cannot determine contents\n");
1103 value
= value_being_returned (value_type
, stop_registers
,
1104 structure_return
, 0);
1105 stb
= ui_out_stream_new (uiout
);
1106 ui_out_text (uiout
, "Value returned is ");
1107 ui_out_field_fmt (uiout
, "gdb-result-var", "$%d",
1108 record_latest_value (value
));
1109 ui_out_text (uiout
, " = ");
1110 value_print (value
, stb
->stream
, 0, Val_no_prettyprint
);
1111 ui_out_field_stream (uiout
, "return-value", stb
);
1112 ui_out_text (uiout
, "\n");
1117 /* Stuff that needs to be done by the finish command after the target
1118 has stopped. In asynchronous mode, we wait for the target to stop in
1119 the call to poll or select in the event loop, so it is impossible to
1120 do all the stuff as part of the finish_command function itself. The
1121 only chance we have to complete this command is in
1122 fetch_inferior_event, which is called by the event loop as soon as it
1123 detects that the target has stopped. This function is called via the
1124 cmd_continuation pointer. */
1126 finish_command_continuation (struct continuation_arg
*arg
)
1128 register struct symbol
*function
;
1129 struct breakpoint
*breakpoint
;
1130 struct cleanup
*cleanups
;
1132 breakpoint
= (struct breakpoint
*) arg
->data
.pointer
;
1133 function
= (struct symbol
*) arg
->next
->data
.pointer
;
1134 cleanups
= (struct cleanup
*) arg
->next
->next
->data
.pointer
;
1136 if (bpstat_find_breakpoint (stop_bpstat
, breakpoint
) != NULL
1139 struct type
*value_type
;
1143 value_type
= TYPE_TARGET_TYPE (SYMBOL_TYPE (function
));
1145 internal_error (__FILE__
, __LINE__
,
1146 "finish_command: function has no target type");
1148 if (TYPE_CODE (value_type
) == TYPE_CODE_VOID
)
1150 do_exec_cleanups (cleanups
);
1154 funcaddr
= BLOCK_START (SYMBOL_BLOCK_VALUE (function
));
1156 struct_return
= using_struct_return (value_of_variable (function
, NULL
),
1158 check_typedef (value_type
),
1159 BLOCK_GCC_COMPILED (SYMBOL_BLOCK_VALUE (function
)));
1161 print_return_value (struct_return
, value_type
);
1163 do_exec_cleanups (cleanups
);
1166 /* "finish": Set a temporary breakpoint at the place
1167 the selected frame will return to, then continue. */
1170 finish_command (char *arg
, int from_tty
)
1172 struct symtab_and_line sal
;
1173 register struct frame_info
*frame
;
1174 register struct symbol
*function
;
1175 struct breakpoint
*breakpoint
;
1176 struct cleanup
*old_chain
;
1177 struct continuation_arg
*arg1
, *arg2
, *arg3
;
1181 /* Find out whether we must run in the background. */
1183 async_exec
= strip_bg_char (&arg
);
1185 /* If we must run in the background, but the target can't do it,
1187 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
1188 error ("Asynchronous execution not supported on this target.");
1190 /* If we are not asked to run in the bg, then prepare to run in the
1191 foreground, synchronously. */
1192 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
1194 /* Simulate synchronous execution */
1195 async_disable_stdin ();
1199 error ("The \"finish\" command does not take any arguments.");
1200 if (!target_has_execution
)
1201 error ("The program is not running.");
1202 if (deprecated_selected_frame
== NULL
)
1203 error ("No selected frame.");
1205 frame
= get_prev_frame (deprecated_selected_frame
);
1207 error ("\"finish\" not meaningful in the outermost frame.");
1209 clear_proceed_status ();
1211 sal
= find_pc_line (get_frame_pc (frame
), 0);
1212 sal
.pc
= get_frame_pc (frame
);
1214 breakpoint
= set_momentary_breakpoint (sal
, get_frame_id (frame
), bp_finish
);
1216 if (!event_loop_p
|| !target_can_async_p ())
1217 old_chain
= make_cleanup_delete_breakpoint (breakpoint
);
1219 old_chain
= make_exec_cleanup_delete_breakpoint (breakpoint
);
1221 /* Find the function we will return from. */
1223 function
= find_pc_function (get_frame_pc (deprecated_selected_frame
));
1225 /* Print info on the selected frame, including level number
1229 printf_filtered ("Run till exit from ");
1230 print_stack_frame (deprecated_selected_frame
,
1231 frame_relative_level (deprecated_selected_frame
), 0);
1234 /* If running asynchronously and the target support asynchronous
1235 execution, set things up for the rest of the finish command to be
1236 completed later on, when gdb has detected that the target has
1237 stopped, in fetch_inferior_event. */
1238 if (event_loop_p
&& target_can_async_p ())
1241 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
1243 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
1245 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
1249 arg1
->data
.pointer
= breakpoint
;
1250 arg2
->data
.pointer
= function
;
1251 arg3
->data
.pointer
= old_chain
;
1252 add_continuation (finish_command_continuation
, arg1
);
1255 proceed_to_finish
= 1; /* We want stop_registers, please... */
1256 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
1258 /* Do this only if not running asynchronously or if the target
1259 cannot do async execution. Otherwise, complete this command when
1260 the target actually stops, in fetch_inferior_event. */
1261 if (!event_loop_p
|| !target_can_async_p ())
1264 /* Did we stop at our breakpoint? */
1265 if (bpstat_find_breakpoint (stop_bpstat
, breakpoint
) != NULL
1268 struct type
*value_type
;
1272 value_type
= TYPE_TARGET_TYPE (SYMBOL_TYPE (function
));
1274 internal_error (__FILE__
, __LINE__
,
1275 "finish_command: function has no target type");
1277 /* FIXME: Shouldn't we do the cleanups before returning? */
1278 if (TYPE_CODE (value_type
) == TYPE_CODE_VOID
)
1281 funcaddr
= BLOCK_START (SYMBOL_BLOCK_VALUE (function
));
1284 using_struct_return (value_of_variable (function
, NULL
),
1286 check_typedef (value_type
),
1287 BLOCK_GCC_COMPILED (SYMBOL_BLOCK_VALUE (function
)));
1289 print_return_value (struct_return
, value_type
);
1291 do_cleanups (old_chain
);
1297 program_info (char *args
, int from_tty
)
1299 bpstat bs
= stop_bpstat
;
1300 int num
= bpstat_num (&bs
);
1302 if (!target_has_execution
)
1304 printf_filtered ("The program being debugged is not being run.\n");
1308 target_files_info ();
1309 printf_filtered ("Program stopped at %s.\n",
1310 local_hex_string ((unsigned long) stop_pc
));
1312 printf_filtered ("It stopped after being stepped.\n");
1315 /* There may be several breakpoints in the same place, so this
1316 isn't as strange as it seems. */
1321 printf_filtered ("It stopped at a breakpoint that has ");
1322 printf_filtered ("since been deleted.\n");
1325 printf_filtered ("It stopped at breakpoint %d.\n", num
);
1326 num
= bpstat_num (&bs
);
1329 else if (stop_signal
!= TARGET_SIGNAL_0
)
1331 printf_filtered ("It stopped with signal %s, %s.\n",
1332 target_signal_to_name (stop_signal
),
1333 target_signal_to_string (stop_signal
));
1338 printf_filtered ("Type \"info stack\" or \"info registers\" ");
1339 printf_filtered ("for more information.\n");
1344 environment_info (char *var
, int from_tty
)
1348 register char *val
= get_in_environ (inferior_environ
, var
);
1351 puts_filtered (var
);
1352 puts_filtered (" = ");
1353 puts_filtered (val
);
1354 puts_filtered ("\n");
1358 puts_filtered ("Environment variable \"");
1359 puts_filtered (var
);
1360 puts_filtered ("\" not defined.\n");
1365 register char **vector
= environ_vector (inferior_environ
);
1368 puts_filtered (*vector
++);
1369 puts_filtered ("\n");
1375 set_environment_command (char *arg
, int from_tty
)
1377 register char *p
, *val
, *var
;
1381 error_no_arg ("environment variable and value");
1383 /* Find seperation between variable name and value */
1384 p
= (char *) strchr (arg
, '=');
1385 val
= (char *) strchr (arg
, ' ');
1387 if (p
!= 0 && val
!= 0)
1389 /* We have both a space and an equals. If the space is before the
1390 equals, walk forward over the spaces til we see a nonspace
1391 (possibly the equals). */
1396 /* Now if the = is after the char following the spaces,
1397 take the char following the spaces. */
1401 else if (val
!= 0 && p
== 0)
1405 error_no_arg ("environment variable to set");
1407 if (p
== 0 || p
[1] == 0)
1411 p
= arg
+ strlen (arg
); /* So that savestring below will work */
1415 /* Not setting variable value to null */
1417 while (*val
== ' ' || *val
== '\t')
1421 while (p
!= arg
&& (p
[-1] == ' ' || p
[-1] == '\t'))
1424 var
= savestring (arg
, p
- arg
);
1427 printf_filtered ("Setting environment variable ");
1428 printf_filtered ("\"%s\" to null value.\n", var
);
1429 set_in_environ (inferior_environ
, var
, "");
1432 set_in_environ (inferior_environ
, var
, val
);
1437 unset_environment_command (char *var
, int from_tty
)
1441 /* If there is no argument, delete all environment variables.
1442 Ask for confirmation if reading from the terminal. */
1443 if (!from_tty
|| query ("Delete all environment variables? "))
1445 free_environ (inferior_environ
);
1446 inferior_environ
= make_environ ();
1450 unset_in_environ (inferior_environ
, var
);
1453 /* Handle the execution path (PATH variable) */
1455 static const char path_var_name
[] = "PATH";
1459 path_info (char *args
, int from_tty
)
1461 puts_filtered ("Executable and object file path: ");
1462 puts_filtered (get_in_environ (inferior_environ
, path_var_name
));
1463 puts_filtered ("\n");
1466 /* Add zero or more directories to the front of the execution path. */
1469 path_command (char *dirname
, int from_tty
)
1474 env
= get_in_environ (inferior_environ
, path_var_name
);
1475 /* Can be null if path is not set */
1478 exec_path
= xstrdup (env
);
1479 mod_path (dirname
, &exec_path
);
1480 set_in_environ (inferior_environ
, path_var_name
, exec_path
);
1483 path_info ((char *) NULL
, from_tty
);
1487 #ifdef REGISTER_NAMES
1488 char *gdb_register_names
[] = REGISTER_NAMES
;
1490 /* Print out the machine register regnum. If regnum is -1, print all
1491 registers (print_all == 1) or all non-float and non-vector
1492 registers (print_all == 0).
1494 For most machines, having all_registers_info() print the
1495 register(s) one per line is good enough. If a different format is
1496 required, (eg, for MIPS or Pyramid 90x, which both have lots of
1497 regs), or there is an existing convention for showing all the
1498 registers, define the architecture method PRINT_REGISTERS_INFO to
1499 provide that format. */
1502 default_print_registers_info (struct gdbarch
*gdbarch
,
1503 struct ui_file
*file
,
1504 struct frame_info
*frame
,
1505 int regnum
, int print_all
)
1508 const int numregs
= NUM_REGS
+ NUM_PSEUDO_REGS
;
1509 char raw_buffer
[MAX_REGISTER_SIZE
];
1510 char virtual_buffer
[MAX_REGISTER_SIZE
];
1512 if (DEPRECATED_DO_REGISTERS_INFO_P ())
1514 DEPRECATED_DO_REGISTERS_INFO (regnum
, print_all
);
1518 for (i
= 0; i
< numregs
; i
++)
1520 /* Decide between printing all regs, non-float / vector regs, or
1526 if (!gdbarch_register_reggroup_p (gdbarch
, i
, all_reggroup
))
1531 if (!gdbarch_register_reggroup_p (gdbarch
, i
, general_reggroup
))
1541 /* If the register name is empty, it is undefined for this
1542 processor, so don't display anything. */
1543 if (REGISTER_NAME (i
) == NULL
|| *(REGISTER_NAME (i
)) == '\0')
1546 fputs_filtered (REGISTER_NAME (i
), file
);
1547 print_spaces_filtered (15 - strlen (REGISTER_NAME (i
)), file
);
1549 /* Get the data in raw format. */
1550 if (! frame_register_read (frame
, i
, raw_buffer
))
1552 fprintf_filtered (file
, "*value not available*\n");
1556 /* FIXME: cagney/2002-08-03: This code shouldn't be necessary.
1557 The function frame_register_read() should have returned the
1558 pre-cooked register so no conversion is necessary. */
1559 /* Convert raw data to virtual format if necessary. */
1560 if (DEPRECATED_REGISTER_CONVERTIBLE (i
))
1562 DEPRECATED_REGISTER_CONVERT_TO_VIRTUAL (i
, register_type (current_gdbarch
, i
),
1563 raw_buffer
, virtual_buffer
);
1567 memcpy (virtual_buffer
, raw_buffer
,
1568 REGISTER_VIRTUAL_SIZE (i
));
1571 /* If virtual format is floating, print it that way, and in raw
1573 if (TYPE_CODE (register_type (current_gdbarch
, i
)) == TYPE_CODE_FLT
)
1577 val_print (register_type (current_gdbarch
, i
), virtual_buffer
, 0, 0,
1578 file
, 0, 1, 0, Val_pretty_default
);
1580 fprintf_filtered (file
, "\t(raw 0x");
1581 for (j
= 0; j
< REGISTER_RAW_SIZE (i
); j
++)
1584 if (TARGET_BYTE_ORDER
== BFD_ENDIAN_BIG
)
1587 idx
= REGISTER_RAW_SIZE (i
) - 1 - j
;
1588 fprintf_filtered (file
, "%02x", (unsigned char) raw_buffer
[idx
]);
1590 fprintf_filtered (file
, ")");
1594 /* Print the register in hex. */
1595 val_print (register_type (current_gdbarch
, i
), virtual_buffer
, 0, 0,
1596 file
, 'x', 1, 0, Val_pretty_default
);
1597 /* If not a vector register, print it also according to its
1599 if (TYPE_VECTOR (register_type (current_gdbarch
, i
)) == 0)
1601 fprintf_filtered (file
, "\t");
1602 val_print (register_type (current_gdbarch
, i
), virtual_buffer
, 0, 0,
1603 file
, 0, 1, 0, Val_pretty_default
);
1607 fprintf_filtered (file
, "\n");
1612 registers_info (char *addr_exp
, int fpregs
)
1614 int regnum
, numregs
;
1617 if (!target_has_registers
)
1618 error ("The program has no registers now.");
1619 if (deprecated_selected_frame
== NULL
)
1620 error ("No selected frame.");
1624 gdbarch_print_registers_info (current_gdbarch
, gdb_stdout
,
1625 deprecated_selected_frame
, -1, fpregs
);
1629 while (*addr_exp
!= '\0')
1634 /* Keep skipping leading white space. */
1635 if (isspace ((*addr_exp
)))
1641 /* Discard any leading ``$''. Check that there is something
1642 resembling a register following it. */
1643 if (addr_exp
[0] == '$')
1645 if (isspace ((*addr_exp
)) || (*addr_exp
) == '\0')
1646 error ("Missing register name");
1648 /* Find the start/end of this register name/num/group. */
1650 while ((*addr_exp
) != '\0' && !isspace ((*addr_exp
)))
1654 /* Figure out what we've found and display it. */
1656 /* A register name? */
1658 int regnum
= frame_map_name_to_regnum (deprecated_selected_frame
,
1659 start
, end
- start
);
1662 gdbarch_print_registers_info (current_gdbarch
, gdb_stdout
,
1663 deprecated_selected_frame
, regnum
, fpregs
);
1668 /* A register number? (how portable is this one?). */
1671 int regnum
= strtol (start
, &endptr
, 0);
1674 && regnum
< NUM_REGS
+ NUM_PSEUDO_REGS
)
1676 gdbarch_print_registers_info (current_gdbarch
, gdb_stdout
,
1677 deprecated_selected_frame
, regnum
, fpregs
);
1682 /* A register group? */
1684 struct reggroup
*const *group
;
1685 for (group
= reggroups (current_gdbarch
);
1689 /* Don't bother with a length check. Should the user
1690 enter a short register group name, go with the first
1691 group that matches. */
1692 if (strncmp (start
, reggroup_name ((*group
)), end
- start
) == 0)
1695 if ((*group
) != NULL
)
1698 for (regnum
= 0; regnum
< NUM_REGS
+ NUM_PSEUDO_REGS
; regnum
++)
1700 if (gdbarch_register_reggroup_p (current_gdbarch
, regnum
,
1702 gdbarch_print_registers_info (current_gdbarch
,
1703 gdb_stdout
, deprecated_selected_frame
,
1710 /* Nothing matched. */
1711 error ("Invalid register `%.*s'", (int) (end
- start
), start
);
1716 all_registers_info (char *addr_exp
, int from_tty
)
1718 registers_info (addr_exp
, 1);
1722 nofp_registers_info (char *addr_exp
, int from_tty
)
1724 registers_info (addr_exp
, 0);
1728 print_vector_info (struct gdbarch
*gdbarch
, struct ui_file
*file
,
1729 struct frame_info
*frame
, const char *args
)
1731 if (!target_has_registers
)
1732 error ("The program has no registers now.");
1733 if (deprecated_selected_frame
== NULL
)
1734 error ("No selected frame.");
1736 if (gdbarch_print_vector_info_p (gdbarch
))
1737 gdbarch_print_vector_info (gdbarch
, file
, frame
, args
);
1741 int printed_something
= 0;
1743 for (regnum
= 0; regnum
< NUM_REGS
+ NUM_PSEUDO_REGS
; regnum
++)
1745 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, vector_reggroup
))
1747 printed_something
= 1;
1748 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
1751 if (!printed_something
)
1752 fprintf_filtered (file
, "No vector information\n");
1757 vector_info (char *args
, int from_tty
)
1759 print_vector_info (current_gdbarch
, gdb_stdout
, deprecated_selected_frame
, args
);
1765 * Should save/restore the tty state since it might be that the
1766 * program to be debugged was started on this tty and it wants
1767 * the tty in some state other than what we want. If it's running
1768 * on another terminal or without a terminal, then saving and
1769 * restoring the tty state is a harmless no-op.
1770 * This only needs to be done if we are attaching to a process.
1775 takes a program started up outside of gdb and ``attaches'' to it.
1776 This stops it cold in its tracks and allows us to start debugging it.
1777 and wait for the trace-trap that results from attaching. */
1780 attach_command (char *args
, int from_tty
)
1783 char *full_exec_path
= NULL
;
1785 dont_repeat (); /* Not for the faint of heart */
1787 if (target_has_execution
)
1789 if (query ("A program is being debugged already. Kill it? "))
1792 error ("Not killed.");
1795 target_attach (args
, from_tty
);
1797 /* Set up the "saved terminal modes" of the inferior
1798 based on what modes we are starting it with. */
1799 target_terminal_init ();
1801 /* Install inferior's terminal modes. */
1802 target_terminal_inferior ();
1804 /* Set up execution context to know that we should return from
1805 wait_for_inferior as soon as the target reports a stop. */
1806 init_wait_for_inferior ();
1807 clear_proceed_status ();
1809 /* No traps are generated when attaching to inferior under Mach 3
1811 #ifndef ATTACH_NO_WAIT
1812 /* Careful here. See comments in inferior.h. Basically some OSes
1813 don't ignore SIGSTOPs on continue requests anymore. We need a
1814 way for handle_inferior_event to reset the stop_signal variable
1815 after an attach, and this is what STOP_QUIETLY_NO_SIGSTOP is for. */
1816 stop_soon
= STOP_QUIETLY_NO_SIGSTOP
;
1817 wait_for_inferior ();
1818 stop_soon
= NO_STOP_QUIETLY
;
1822 * If no exec file is yet known, try to determine it from the
1825 exec_file
= (char *) get_exec_file (0);
1828 exec_file
= target_pid_to_exec_file (PIDGET (inferior_ptid
));
1831 /* It's possible we don't have a full path, but rather just a
1832 filename. Some targets, such as HP-UX, don't provide the
1835 Attempt to qualify the filename against the source path.
1836 (If that fails, we'll just fall back on the original
1837 filename. Not much more we can do...)
1839 if (!source_full_path_of (exec_file
, &full_exec_path
))
1840 full_exec_path
= savestring (exec_file
, strlen (exec_file
));
1842 exec_file_attach (full_exec_path
, from_tty
);
1843 symbol_file_add_main (full_exec_path
, from_tty
);
1848 /* Add shared library symbols from the newly attached process, if any. */
1849 SOLIB_ADD ((char *) 0, from_tty
, ¤t_target
, auto_solib_add
);
1850 re_enable_breakpoints_in_shlibs ();
1853 /* Take any necessary post-attaching actions for this platform.
1855 target_post_attach (PIDGET (inferior_ptid
));
1865 * takes a program previously attached to and detaches it.
1866 * The program resumes execution and will no longer stop
1867 * on signals, etc. We better not have left any breakpoints
1868 * in the program or it'll die when it hits one. For this
1869 * to work, it may be necessary for the process to have been
1870 * previously attached. It *might* work if the program was
1871 * started via the normal ptrace (PTRACE_TRACEME).
1875 detach_command (char *args
, int from_tty
)
1877 dont_repeat (); /* Not for the faint of heart */
1878 target_detach (args
, from_tty
);
1879 #if defined(SOLIB_RESTART)
1886 /* Disconnect from the current target without resuming it (leaving it
1887 waiting for a debugger).
1889 We'd better not have left any breakpoints in the program or the
1890 next debugger will get confused. Currently only supported for some
1891 remote targets, since the normal attach mechanisms don't work on
1892 stopped processes on some native platforms (e.g. GNU/Linux). */
1895 disconnect_command (char *args
, int from_tty
)
1897 dont_repeat (); /* Not for the faint of heart */
1898 target_disconnect (args
, from_tty
);
1899 #if defined(SOLIB_RESTART)
1906 /* Stop the execution of the target while running in async mode, in
1909 interrupt_target_command (char *args
, int from_tty
)
1911 if (event_loop_p
&& target_can_async_p ())
1913 dont_repeat (); /* Not for the faint of heart */
1920 print_float_info (struct gdbarch
*gdbarch
, struct ui_file
*file
,
1921 struct frame_info
*frame
, const char *args
)
1923 if (!target_has_registers
)
1924 error ("The program has no registers now.");
1925 if (deprecated_selected_frame
== NULL
)
1926 error ("No selected frame.");
1928 if (gdbarch_print_float_info_p (gdbarch
))
1929 gdbarch_print_float_info (gdbarch
, file
, frame
, args
);
1933 int printed_something
= 0;
1935 for (regnum
= 0; regnum
< NUM_REGS
+ NUM_PSEUDO_REGS
; regnum
++)
1937 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, float_reggroup
))
1939 printed_something
= 1;
1940 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
1943 if (!printed_something
)
1944 fprintf_filtered (file
, "\
1945 No floating-point info available for this processor.\n");
1950 float_info (char *args
, int from_tty
)
1952 print_float_info (current_gdbarch
, gdb_stdout
, deprecated_selected_frame
, args
);
1957 unset_command (char *args
, int from_tty
)
1959 printf_filtered ("\"unset\" must be followed by the name of ");
1960 printf_filtered ("an unset subcommand.\n");
1961 help_list (unsetlist
, "unset ", -1, gdb_stdout
);
1965 _initialize_infcmd (void)
1967 struct cmd_list_element
*c
;
1969 c
= add_com ("tty", class_run
, tty_command
,
1970 "Set terminal for future runs of program being debugged.");
1971 set_cmd_completer (c
, filename_completer
);
1973 c
= add_set_cmd ("args", class_run
, var_string_noescape
,
1974 (char *) &inferior_args
,
1975 "Set argument list to give program being debugged when it is started.\n\
1976 Follow this command with any number of args, to be passed to the program.",
1978 set_cmd_completer (c
, filename_completer
);
1979 set_cmd_sfunc (c
, notice_args_set
);
1980 c
= add_show_from_set (c
, &showlist
);
1981 set_cmd_sfunc (c
, notice_args_read
);
1984 ("environment", no_class
, environment_info
,
1985 "The environment to give the program, or one variable's value.\n\
1986 With an argument VAR, prints the value of environment variable VAR to\n\
1987 give the program being debugged. With no arguments, prints the entire\n\
1988 environment to be given to the program.", &showlist
);
1989 set_cmd_completer (c
, noop_completer
);
1991 add_prefix_cmd ("unset", no_class
, unset_command
,
1992 "Complement to certain \"set\" commands.",
1993 &unsetlist
, "unset ", 0, &cmdlist
);
1995 c
= add_cmd ("environment", class_run
, unset_environment_command
,
1996 "Cancel environment variable VAR for the program.\n\
1997 This does not affect the program until the next \"run\" command.",
1999 set_cmd_completer (c
, noop_completer
);
2001 c
= add_cmd ("environment", class_run
, set_environment_command
,
2002 "Set environment variable value to give the program.\n\
2003 Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\
2004 VALUES of environment variables are uninterpreted strings.\n\
2005 This does not affect the program until the next \"run\" command.",
2007 set_cmd_completer (c
, noop_completer
);
2009 c
= add_com ("path", class_files
, path_command
,
2010 "Add directory DIR(s) to beginning of search path for object files.\n\
2011 $cwd in the path means the current working directory.\n\
2012 This path is equivalent to the $PATH shell variable. It is a list of\n\
2013 directories, separated by colons. These directories are searched to find\n\
2014 fully linked executable files and separately compiled object files as needed.");
2015 set_cmd_completer (c
, filename_completer
);
2017 c
= add_cmd ("paths", no_class
, path_info
,
2018 "Current search path for finding object files.\n\
2019 $cwd in the path means the current working directory.\n\
2020 This path is equivalent to the $PATH shell variable. It is a list of\n\
2021 directories, separated by colons. These directories are searched to find\n\
2022 fully linked executable files and separately compiled object files as needed.",
2024 set_cmd_completer (c
, noop_completer
);
2026 add_com ("attach", class_run
, attach_command
,
2027 "Attach to a process or file outside of GDB.\n\
2028 This command attaches to another target, of the same type as your last\n\
2029 \"target\" command (\"info files\" will show your target stack).\n\
2030 The command may take as argument a process id or a device file.\n\
2031 For a process id, you must have permission to send the process a signal,\n\
2032 and it must have the same effective uid as the debugger.\n\
2033 When using \"attach\" with a process id, the debugger finds the\n\
2034 program running in the process, looking first in the current working\n\
2035 directory, or (if not found there) using the source file search path\n\
2036 (see the \"directory\" command). You can also use the \"file\" command\n\
2037 to specify the program, and to load its symbol table.");
2039 add_com ("detach", class_run
, detach_command
,
2040 "Detach a process or file previously attached.\n\
2041 If a process, it is no longer traced, and it continues its execution. If\n\
2042 you were debugging a file, the file is closed and gdb no longer accesses it.");
2044 add_com ("disconnect", class_run
, disconnect_command
,
2045 "Disconnect from a target.\n\
2046 The target will wait for another debugger to connect. Not available for\n\
2049 add_com ("signal", class_run
, signal_command
,
2050 "Continue program giving it signal specified by the argument.\n\
2051 An argument of \"0\" means continue program without giving it a signal.");
2053 add_com ("stepi", class_run
, stepi_command
,
2054 "Step one instruction exactly.\n\
2055 Argument N means do this N times (or till program stops for another reason).");
2056 add_com_alias ("si", "stepi", class_alias
, 0);
2058 add_com ("nexti", class_run
, nexti_command
,
2059 "Step one instruction, but proceed through subroutine calls.\n\
2060 Argument N means do this N times (or till program stops for another reason).");
2061 add_com_alias ("ni", "nexti", class_alias
, 0);
2063 add_com ("finish", class_run
, finish_command
,
2064 "Execute until selected stack frame returns.\n\
2065 Upon return, the value returned is printed and put in the value history.");
2067 add_com ("next", class_run
, next_command
,
2068 "Step program, proceeding through subroutine calls.\n\
2069 Like the \"step\" command as long as subroutine calls do not happen;\n\
2070 when they do, the call is treated as one instruction.\n\
2071 Argument N means do this N times (or till program stops for another reason).");
2072 add_com_alias ("n", "next", class_run
, 1);
2074 add_com_alias ("S", "next", class_run
, 1);
2076 add_com ("step", class_run
, step_command
,
2077 "Step program until it reaches a different source line.\n\
2078 Argument N means do this N times (or till program stops for another reason).");
2079 add_com_alias ("s", "step", class_run
, 1);
2081 c
= add_com ("until", class_run
, until_command
,
2082 "Execute until the program reaches a source line greater than the current\n\
2083 or a specified location (same args as break command) within the current frame.");
2084 set_cmd_completer (c
, location_completer
);
2085 add_com_alias ("u", "until", class_run
, 1);
2087 c
= add_com ("advance", class_run
, advance_command
,
2088 "Continue the program up to the given location (same form as args for break command).\n\
2089 Execution will also stop upon exit from the current stack frame.");
2090 set_cmd_completer (c
, location_completer
);
2092 c
= add_com ("jump", class_run
, jump_command
,
2093 "Continue program being debugged at specified line or address.\n\
2094 Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\
2095 for an address to start at.");
2096 set_cmd_completer (c
, location_completer
);
2100 c
= add_com ("go", class_run
, go_command
,
2101 "Usage: go <location>\n\
2102 Continue program being debugged, stopping at specified line or \n\
2104 Give as argument either LINENUM or *ADDR, where ADDR is an \n\
2105 expression for an address to start at.\n\
2106 This command is a combination of tbreak and jump.");
2107 set_cmd_completer (c
, location_completer
);
2111 add_com_alias ("g", "go", class_run
, 1);
2113 add_com ("continue", class_run
, continue_command
,
2114 "Continue program being debugged, after signal or breakpoint.\n\
2115 If proceeding from breakpoint, a number N may be used as an argument,\n\
2116 which means to set the ignore count of that breakpoint to N - 1 (so that\n\
2117 the breakpoint won't break until the Nth time it is reached).");
2118 add_com_alias ("c", "cont", class_run
, 1);
2119 add_com_alias ("fg", "cont", class_run
, 1);
2121 c
= add_com ("run", class_run
, run_command
,
2122 "Start debugged program. You may specify arguments to give it.\n\
2123 Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\
2124 Input and output redirection with \">\", \"<\", or \">>\" are also allowed.\n\n\
2125 With no arguments, uses arguments last specified (with \"run\" or \"set args\").\n\
2126 To cancel previous arguments and run with no arguments,\n\
2127 use \"set args\" without arguments.");
2128 set_cmd_completer (c
, filename_completer
);
2129 add_com_alias ("r", "run", class_run
, 1);
2131 add_com ("R", class_run
, run_no_args_command
,
2132 "Start debugged program with no arguments.");
2134 add_com ("interrupt", class_run
, interrupt_target_command
,
2135 "Interrupt the execution of the debugged program.");
2137 add_info ("registers", nofp_registers_info
,
2138 "List of integer registers and their contents, for selected stack frame.\n\
2139 Register name as argument means describe only that register.");
2140 add_info_alias ("r", "registers", 1);
2143 add_com ("lr", class_info
, nofp_registers_info
,
2144 "List of integer registers and their contents, for selected stack frame.\n\
2145 Register name as argument means describe only that register.");
2146 add_info ("all-registers", all_registers_info
,
2147 "List of all registers and their contents, for selected stack frame.\n\
2148 Register name as argument means describe only that register.");
2150 add_info ("program", program_info
,
2151 "Execution status of the program.");
2153 add_info ("float", float_info
,
2154 "Print the status of the floating point unit\n");
2156 add_info ("vector", vector_info
,
2157 "Print the status of the vector unit\n");
2159 inferior_environ
= make_environ ();
2160 init_environ (inferior_environ
);