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 unset_environment_command (char *, int);
86 static void set_environment_command (char *, int);
88 static void environment_info (char *, int);
90 static void program_info (char *, int);
92 static void finish_command (char *, int);
94 static void signal_command (char *, int);
96 static void jump_command (char *, int);
98 static void step_1 (int, int, char *);
99 static void step_once (int skip_subroutines
, int single_inst
, int count
);
100 static void step_1_continuation (struct continuation_arg
*arg
);
102 static void next_command (char *, int);
104 static void step_command (char *, int);
106 static void run_command (char *, int);
108 static void run_no_args_command (char *args
, int from_tty
);
110 static void go_command (char *line_no
, int from_tty
);
112 static int strip_bg_char (char **);
114 void _initialize_infcmd (void);
116 #define GO_USAGE "Usage: go <location>\n"
118 #define ERROR_NO_INFERIOR \
119 if (!target_has_execution) error ("The program is not being run.");
121 /* String containing arguments to give to the program, separated by spaces.
122 Empty string (pointer to '\0') means no args. */
124 static char *inferior_args
;
126 /* The inferior arguments as a vector. If INFERIOR_ARGC is nonzero,
127 then we must compute INFERIOR_ARGS from this (via the target). */
129 static int inferior_argc
;
130 static char **inferior_argv
;
132 /* File name for default use for standard in/out in the inferior. */
134 char *inferior_io_terminal
;
136 /* Pid of our debugged inferior, or 0 if no inferior now.
137 Since various parts of infrun.c test this to see whether there is a program
138 being debugged it should be nonzero (currently 3 is used) for remote
141 ptid_t inferior_ptid
;
143 /* Last signal that the inferior received (why it stopped). */
145 enum target_signal stop_signal
;
147 /* Address at which inferior stopped. */
151 /* Chain containing status of breakpoint(s) that we have stopped at. */
155 /* Flag indicating that a command has proceeded the inferior past the
156 current breakpoint. */
158 int breakpoint_proceeded
;
160 /* Nonzero if stopped due to a step command. */
164 /* Nonzero if stopped due to completion of a stack dummy routine. */
166 int stop_stack_dummy
;
168 /* Nonzero if stopped due to a random (unexpected) signal in inferior
171 int stopped_by_random_signal
;
173 /* Range to single step within.
174 If this is nonzero, respond to a single-step signal
175 by continuing to step if the pc is in this range. */
177 CORE_ADDR step_range_start
; /* Inclusive */
178 CORE_ADDR step_range_end
; /* Exclusive */
180 /* Stack frame address as of when stepping command was issued.
181 This is how we know when we step into a subroutine call,
182 and how to set the frame for the breakpoint used to step out. */
184 struct frame_id step_frame_id
;
186 /* Our notion of the current stack pointer. */
190 enum step_over_calls_kind step_over_calls
;
192 /* If stepping, nonzero means step count is > 1
193 so don't print frame next time inferior stops
194 if it stops due to stepping. */
198 /* Environment to use for running inferior,
199 in format described in environ.h. */
201 struct environ
*inferior_environ
;
203 /* Accessor routines. */
206 get_inferior_args (void)
208 if (inferior_argc
!= 0)
212 n
= gdbarch_construct_inferior_arguments (current_gdbarch
,
213 inferior_argc
, inferior_argv
);
214 old
= set_inferior_args (n
);
218 if (inferior_args
== NULL
)
219 inferior_args
= xstrdup ("");
221 return inferior_args
;
225 set_inferior_args (char *newargs
)
227 char *saved_args
= inferior_args
;
229 inferior_args
= newargs
;
237 set_inferior_args_vector (int argc
, char **argv
)
239 inferior_argc
= argc
;
240 inferior_argv
= argv
;
243 /* Notice when `set args' is run. */
245 notice_args_set (char *args
, int from_tty
, struct cmd_list_element
*c
)
251 /* Notice when `show args' is run. */
253 notice_args_read (char *args
, int from_tty
, struct cmd_list_element
*c
)
255 /* Might compute the value. */
256 get_inferior_args ();
260 /* Compute command-line string given argument vector. This does the
261 same shell processing as fork_inferior. */
264 construct_inferior_arguments (struct gdbarch
*gdbarch
, int argc
, char **argv
)
268 if (STARTUP_WITH_SHELL
)
270 /* This holds all the characters considered special to the
271 typical Unix shells. We include `^' because the SunOS
272 /bin/sh treats it as a synonym for `|'. */
273 char *special
= "\"!#$&*()\\|[]{}<>?'\"`~^; \t\n";
278 /* We over-compute the size. It shouldn't matter. */
279 for (i
= 0; i
< argc
; ++i
)
280 length
+= 2 * strlen (argv
[i
]) + 1 + 2 * (argv
[i
][0] == '\0');
282 result
= (char *) xmalloc (length
);
285 for (i
= 0; i
< argc
; ++i
)
290 /* Need to handle empty arguments specially. */
291 if (argv
[i
][0] == '\0')
298 for (cp
= argv
[i
]; *cp
; ++cp
)
300 if (strchr (special
, *cp
) != NULL
)
310 /* In this case we can't handle arguments that contain spaces,
311 tabs, or newlines -- see breakup_args(). */
315 for (i
= 0; i
< argc
; ++i
)
317 char *cp
= strchr (argv
[i
], ' ');
319 cp
= strchr (argv
[i
], '\t');
321 cp
= strchr (argv
[i
], '\n');
323 error ("can't handle command-line argument containing whitespace");
324 length
+= strlen (argv
[i
]) + 1;
327 result
= (char *) xmalloc (length
);
329 for (i
= 0; i
< argc
; ++i
)
332 strcat (result
, " ");
333 strcat (result
, argv
[i
]);
341 /* This function detects whether or not a '&' character (indicating
342 background execution) has been added as *the last* of the arguments ARGS
343 of a command. If it has, it removes it and returns 1. Otherwise it
344 does nothing and returns 0. */
346 strip_bg_char (char **args
)
350 p
= strchr (*args
, '&');
354 if (p
== (*args
+ strlen (*args
) - 1))
356 if (strlen (*args
) > 1)
360 while (*p
== ' ' || *p
== '\t');
373 tty_command (char *file
, int from_tty
)
376 error_no_arg ("terminal name for running target process");
378 inferior_io_terminal
= savestring (file
, strlen (file
));
382 run_command (char *args
, int from_tty
)
388 if (! ptid_equal (inferior_ptid
, null_ptid
) && target_has_execution
)
391 && !query ("The program being debugged has been started already.\n\
392 Start it from the beginning? "))
393 error ("Program not restarted.");
395 #if defined(SOLIB_RESTART)
398 init_wait_for_inferior ();
401 clear_breakpoint_hit_counts ();
403 /* Purge old solib objfiles. */
404 objfile_purge_solibs ();
406 do_run_cleanups (NULL
);
408 /* The comment here used to read, "The exec file is re-read every
409 time we do a generic_mourn_inferior, so we just have to worry
410 about the symbol file." The `generic_mourn_inferior' function
411 gets called whenever the program exits. However, suppose the
412 program exits, and *then* the executable file changes? We need
413 to check again here. Since reopen_exec_file doesn't do anything
414 if the timestamp hasn't changed, I don't see the harm. */
418 exec_file
= (char *) get_exec_file (0);
420 /* We keep symbols from add-symbol-file, on the grounds that the
421 user might want to add some symbols before running the program
422 (right?). But sometimes (dynamic loading where the user manually
423 introduces the new symbols with add-symbol-file), the code which
424 the symbols describe does not persist between runs. Currently
425 the user has to manually nuke all symbols between runs if they
426 want them to go away (PR 2207). This is probably reasonable. */
430 if (event_loop_p
&& target_can_async_p ())
431 async_disable_stdin ();
435 int async_exec
= strip_bg_char (&args
);
437 /* If we get a request for running in the bg but the target
438 doesn't support it, error out. */
439 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
440 error ("Asynchronous execution not supported on this target.");
442 /* If we don't get a request of running in the bg, then we need
443 to simulate synchronous (fg) execution. */
444 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
446 /* Simulate synchronous execution */
447 async_disable_stdin ();
450 /* If there were other args, beside '&', process them. */
453 char *old_args
= set_inferior_args (xstrdup (args
));
460 ui_out_field_string (uiout
, NULL
, "Starting program");
461 ui_out_text (uiout
, ": ");
463 ui_out_field_string (uiout
, "execfile", exec_file
);
464 ui_out_spaces (uiout
, 1);
465 /* We call get_inferior_args() because we might need to compute
467 ui_out_field_string (uiout
, "infargs", get_inferior_args ());
468 ui_out_text (uiout
, "\n");
469 ui_out_flush (uiout
);
472 /* We call get_inferior_args() because we might need to compute
474 target_create_inferior (exec_file
, get_inferior_args (),
475 environ_vector (inferior_environ
));
480 run_no_args_command (char *args
, int from_tty
)
482 char *old_args
= set_inferior_args (xstrdup (""));
488 continue_command (char *proc_count_exp
, int from_tty
)
493 /* Find out whether we must run in the background. */
494 if (proc_count_exp
!= NULL
)
495 async_exec
= strip_bg_char (&proc_count_exp
);
497 /* If we must run in the background, but the target can't do it,
499 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
500 error ("Asynchronous execution not supported on this target.");
502 /* If we are not asked to run in the bg, then prepare to run in the
503 foreground, synchronously. */
504 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
506 /* Simulate synchronous execution */
507 async_disable_stdin ();
510 /* If have argument (besides '&'), set proceed count of breakpoint
512 if (proc_count_exp
!= NULL
)
514 bpstat bs
= stop_bpstat
;
515 int num
= bpstat_num (&bs
);
516 if (num
== 0 && from_tty
)
519 ("Not stopped at any breakpoint; argument ignored.\n");
523 set_ignore_count (num
,
524 parse_and_eval_long (proc_count_exp
) - 1,
526 /* set_ignore_count prints a message ending with a period.
527 So print two spaces before "Continuing.". */
529 printf_filtered (" ");
530 num
= bpstat_num (&bs
);
535 printf_filtered ("Continuing.\n");
537 clear_proceed_status ();
539 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
542 /* Step until outside of current statement. */
546 step_command (char *count_string
, int from_tty
)
548 step_1 (0, 0, count_string
);
551 /* Likewise, but skip over subroutine calls as if single instructions. */
555 next_command (char *count_string
, int from_tty
)
557 step_1 (1, 0, count_string
);
560 /* Likewise, but step only one instruction. */
564 stepi_command (char *count_string
, int from_tty
)
566 step_1 (0, 1, count_string
);
571 nexti_command (char *count_string
, int from_tty
)
573 step_1 (1, 1, count_string
);
577 disable_longjmp_breakpoint_cleanup (void *ignore
)
579 disable_longjmp_breakpoint ();
583 step_1 (int skip_subroutines
, int single_inst
, char *count_string
)
585 register int count
= 1;
586 struct frame_info
*frame
;
587 struct cleanup
*cleanups
= 0;
593 async_exec
= strip_bg_char (&count_string
);
595 /* If we get a request for running in the bg but the target
596 doesn't support it, error out. */
597 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
598 error ("Asynchronous execution not supported on this target.");
600 /* If we don't get a request of running in the bg, then we need
601 to simulate synchronous (fg) execution. */
602 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
604 /* Simulate synchronous execution */
605 async_disable_stdin ();
608 count
= count_string
? parse_and_eval_long (count_string
) : 1;
610 if (!single_inst
|| skip_subroutines
) /* leave si command alone */
612 enable_longjmp_breakpoint ();
613 if (!event_loop_p
|| !target_can_async_p ())
614 cleanups
= make_cleanup (disable_longjmp_breakpoint_cleanup
, 0 /*ignore*/);
616 make_exec_cleanup (disable_longjmp_breakpoint_cleanup
, 0 /*ignore*/);
619 /* In synchronous case, all is well, just use the regular for loop. */
620 if (!event_loop_p
|| !target_can_async_p ())
622 for (; count
> 0; count
--)
624 clear_proceed_status ();
626 frame
= get_current_frame ();
627 if (!frame
) /* Avoid coredump here. Why tho? */
628 error ("No current frame");
629 step_frame_id
= get_frame_id (frame
);
630 step_sp
= read_sp ();
634 find_pc_line_pc_range (stop_pc
, &step_range_start
, &step_range_end
);
635 if (step_range_end
== 0)
638 if (find_pc_partial_function (stop_pc
, &name
, &step_range_start
,
639 &step_range_end
) == 0)
640 error ("Cannot find bounds of current function");
642 target_terminal_ours ();
644 Single stepping until exit from function %s, \n\
645 which has no line number information.\n", name
);
650 /* Say we are stepping, but stop after one insn whatever it does. */
651 step_range_start
= step_range_end
= 1;
652 if (!skip_subroutines
)
654 Don't step over function calls, not even to functions lacking
656 step_over_calls
= STEP_OVER_NONE
;
659 if (skip_subroutines
)
660 step_over_calls
= STEP_OVER_ALL
;
662 step_multi
= (count
> 1);
663 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
668 /* FIXME: On nexti, this may have already been done (when we hit the
669 step resume break, I think). Probably this should be moved to
670 wait_for_inferior (near the top). */
671 #if defined (SHIFT_INST_REGS)
676 if (!single_inst
|| skip_subroutines
)
677 do_cleanups (cleanups
);
680 /* In case of asynchronous target things get complicated, do only
681 one step for now, before returning control to the event loop. Let
682 the continuation figure out how many other steps we need to do,
683 and handle them one at the time, through step_once(). */
686 if (event_loop_p
&& target_can_async_p ())
687 step_once (skip_subroutines
, single_inst
, count
);
691 /* Called after we are done with one step operation, to check whether
692 we need to step again, before we print the prompt and return control
693 to the user. If count is > 1, we will need to do one more call to
694 proceed(), via step_once(). Basically it is like step_once and
695 step_1_continuation are co-recursive. */
697 step_1_continuation (struct continuation_arg
*arg
)
700 int skip_subroutines
;
703 skip_subroutines
= arg
->data
.integer
;
704 single_inst
= arg
->next
->data
.integer
;
705 count
= arg
->next
->next
->data
.integer
;
709 /* FIXME: On nexti, this may have already been done (when we hit the
710 step resume break, I think). Probably this should be moved to
711 wait_for_inferior (near the top). */
712 #if defined (SHIFT_INST_REGS)
715 step_once (skip_subroutines
, single_inst
, count
- 1);
718 if (!single_inst
|| skip_subroutines
)
719 do_exec_cleanups (ALL_CLEANUPS
);
722 /* Do just one step operation. If count >1 we will have to set up a
723 continuation to be done after the target stops (after this one
724 step). This is useful to implement the 'step n' kind of commands, in
725 case of asynchronous targets. We had to split step_1 into two parts,
726 one to be done before proceed() and one afterwards. This function is
727 called in case of step n with n>1, after the first step operation has
730 step_once (int skip_subroutines
, int single_inst
, int count
)
732 struct continuation_arg
*arg1
;
733 struct continuation_arg
*arg2
;
734 struct continuation_arg
*arg3
;
735 struct frame_info
*frame
;
739 clear_proceed_status ();
741 frame
= get_current_frame ();
742 if (!frame
) /* Avoid coredump here. Why tho? */
743 error ("No current frame");
744 step_frame_id
= get_frame_id (frame
);
745 step_sp
= read_sp ();
749 find_pc_line_pc_range (stop_pc
, &step_range_start
, &step_range_end
);
751 /* If we have no line info, switch to stepi mode. */
752 if (step_range_end
== 0 && step_stop_if_no_debug
)
754 step_range_start
= step_range_end
= 1;
756 else if (step_range_end
== 0)
759 if (find_pc_partial_function (stop_pc
, &name
, &step_range_start
,
760 &step_range_end
) == 0)
761 error ("Cannot find bounds of current function");
763 target_terminal_ours ();
765 Single stepping until exit from function %s, \n\
766 which has no line number information.\n", name
);
771 /* Say we are stepping, but stop after one insn whatever it does. */
772 step_range_start
= step_range_end
= 1;
773 if (!skip_subroutines
)
775 Don't step over function calls, not even to functions lacking
777 step_over_calls
= STEP_OVER_NONE
;
780 if (skip_subroutines
)
781 step_over_calls
= STEP_OVER_ALL
;
783 step_multi
= (count
> 1);
785 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
787 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
789 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
791 arg1
->data
.integer
= skip_subroutines
;
793 arg2
->data
.integer
= single_inst
;
795 arg3
->data
.integer
= count
;
796 add_intermediate_continuation (step_1_continuation
, arg1
);
797 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
802 /* Continue program at specified address. */
805 jump_command (char *arg
, int from_tty
)
807 register CORE_ADDR addr
;
808 struct symtabs_and_lines sals
;
809 struct symtab_and_line sal
;
816 /* Find out whether we must run in the background. */
818 async_exec
= strip_bg_char (&arg
);
820 /* If we must run in the background, but the target can't do it,
822 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
823 error ("Asynchronous execution not supported on this target.");
825 /* If we are not asked to run in the bg, then prepare to run in the
826 foreground, synchronously. */
827 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
829 /* Simulate synchronous execution */
830 async_disable_stdin ();
834 error_no_arg ("starting address");
836 sals
= decode_line_spec_1 (arg
, 1);
839 error ("Unreasonable jump request");
845 if (sal
.symtab
== 0 && sal
.pc
== 0)
846 error ("No source file has been specified.");
848 resolve_sal_pc (&sal
); /* May error out */
850 /* See if we are trying to jump to another function. */
851 fn
= get_frame_function (get_current_frame ());
852 sfn
= find_pc_function (sal
.pc
);
853 if (fn
!= NULL
&& sfn
!= fn
)
855 if (!query ("Line %d is not in `%s'. Jump anyway? ", sal
.line
,
856 SYMBOL_PRINT_NAME (fn
)))
858 error ("Not confirmed.");
865 fixup_symbol_section (sfn
, 0);
866 if (section_is_overlay (SYMBOL_BFD_SECTION (sfn
)) &&
867 !section_is_mapped (SYMBOL_BFD_SECTION (sfn
)))
869 if (!query ("WARNING!!! Destination is in unmapped overlay! Jump anyway? "))
871 error ("Not confirmed.");
881 printf_filtered ("Continuing at ");
882 print_address_numeric (addr
, 1, gdb_stdout
);
883 printf_filtered (".\n");
886 clear_proceed_status ();
887 proceed (addr
, TARGET_SIGNAL_0
, 0);
891 /* Go to line or address in current procedure */
893 go_command (char *line_no
, int from_tty
)
895 if (line_no
== (char *) NULL
|| !*line_no
)
896 printf_filtered (GO_USAGE
);
899 tbreak_command (line_no
, from_tty
);
900 jump_command (line_no
, from_tty
);
905 /* Continue program giving it specified signal. */
908 signal_command (char *signum_exp
, int from_tty
)
910 enum target_signal oursig
;
912 dont_repeat (); /* Too dangerous. */
916 error_no_arg ("signal number");
918 /* It would be even slicker to make signal names be valid expressions,
919 (the type could be "enum $signal" or some such), then the user could
920 assign them to convenience variables. */
921 oursig
= target_signal_from_name (signum_exp
);
923 if (oursig
== TARGET_SIGNAL_UNKNOWN
)
925 /* No, try numeric. */
926 int num
= parse_and_eval_long (signum_exp
);
929 oursig
= TARGET_SIGNAL_0
;
931 oursig
= target_signal_from_command (num
);
936 if (oursig
== TARGET_SIGNAL_0
)
937 printf_filtered ("Continuing with no signal.\n");
939 printf_filtered ("Continuing with signal %s.\n",
940 target_signal_to_name (oursig
));
943 clear_proceed_status ();
944 /* "signal 0" should not get stuck if we are stopped at a breakpoint.
945 FIXME: Neither should "signal foo" but when I tried passing
946 (CORE_ADDR)-1 unconditionally I got a testsuite failure which I haven't
947 tried to track down yet. */
948 proceed (oursig
== TARGET_SIGNAL_0
? (CORE_ADDR
) -1 : stop_pc
, oursig
, 0);
951 /* Proceed until we reach a different source line with pc greater than
952 our current one or exit the function. We skip calls in both cases.
954 Note that eventually this command should probably be changed so
955 that only source lines are printed out when we hit the breakpoint
956 we set. This may involve changes to wait_for_inferior and the
957 proceed status code. */
961 until_next_command (int from_tty
)
963 struct frame_info
*frame
;
966 struct symtab_and_line sal
;
968 clear_proceed_status ();
970 frame
= get_current_frame ();
972 /* Step until either exited from this function or greater
973 than the current line (if in symbolic section) or pc (if
977 func
= find_pc_function (pc
);
981 struct minimal_symbol
*msymbol
= lookup_minimal_symbol_by_pc (pc
);
984 error ("Execution is not within a known function.");
986 step_range_start
= SYMBOL_VALUE_ADDRESS (msymbol
);
991 sal
= find_pc_line (pc
, 0);
993 step_range_start
= BLOCK_START (SYMBOL_BLOCK_VALUE (func
));
994 step_range_end
= sal
.end
;
997 step_over_calls
= STEP_OVER_ALL
;
998 step_frame_id
= get_frame_id (frame
);
999 step_sp
= read_sp ();
1001 step_multi
= 0; /* Only one call to proceed */
1003 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
1007 until_command (char *arg
, int from_tty
)
1011 if (!target_has_execution
)
1012 error ("The program is not running.");
1014 /* Find out whether we must run in the background. */
1016 async_exec
= strip_bg_char (&arg
);
1018 /* If we must run in the background, but the target can't do it,
1020 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
1021 error ("Asynchronous execution not supported on this target.");
1023 /* If we are not asked to run in the bg, then prepare to run in the
1024 foreground, synchronously. */
1025 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
1027 /* Simulate synchronous execution */
1028 async_disable_stdin ();
1032 until_break_command (arg
, from_tty
, 0);
1034 until_next_command (from_tty
);
1038 advance_command (char *arg
, int from_tty
)
1042 if (!target_has_execution
)
1043 error ("The program is not running.");
1046 error_no_arg ("a location");
1048 /* Find out whether we must run in the background. */
1050 async_exec
= strip_bg_char (&arg
);
1052 /* If we must run in the background, but the target can't do it,
1054 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
1055 error ("Asynchronous execution not supported on this target.");
1057 /* If we are not asked to run in the bg, then prepare to run in the
1058 foreground, synchronously. */
1059 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
1061 /* Simulate synchronous execution. */
1062 async_disable_stdin ();
1065 until_break_command (arg
, from_tty
, 1);
1069 /* Print the result of a function at the end of a 'finish' command. */
1071 print_return_value (int structure_return
, struct type
*value_type
)
1073 struct value
*value
;
1074 static struct ui_stream
*stb
= NULL
;
1076 if (!structure_return
)
1078 value
= value_being_returned (value_type
, stop_registers
, structure_return
);
1079 stb
= ui_out_stream_new (uiout
);
1080 ui_out_text (uiout
, "Value returned is ");
1081 ui_out_field_fmt (uiout
, "gdb-result-var", "$%d", record_latest_value (value
));
1082 ui_out_text (uiout
, " = ");
1083 value_print (value
, stb
->stream
, 0, Val_no_prettyprint
);
1084 ui_out_field_stream (uiout
, "return-value", stb
);
1085 ui_out_text (uiout
, "\n");
1089 /* We cannot determine the contents of the structure because
1090 it is on the stack, and we don't know where, since we did not
1091 initiate the call, as opposed to the call_function_by_hand case */
1092 #ifdef VALUE_RETURNED_FROM_STACK
1094 ui_out_text (uiout
, "Value returned has type: ");
1095 ui_out_field_string (uiout
, "return-type", TYPE_NAME (value_type
));
1096 ui_out_text (uiout
, ".");
1097 ui_out_text (uiout
, " Cannot determine contents\n");
1099 value
= value_being_returned (value_type
, stop_registers
, structure_return
);
1100 stb
= ui_out_stream_new (uiout
);
1101 ui_out_text (uiout
, "Value returned is ");
1102 ui_out_field_fmt (uiout
, "gdb-result-var", "$%d", record_latest_value (value
));
1103 ui_out_text (uiout
, " = ");
1104 value_print (value
, stb
->stream
, 0, Val_no_prettyprint
);
1105 ui_out_field_stream (uiout
, "return-value", stb
);
1106 ui_out_text (uiout
, "\n");
1111 /* Stuff that needs to be done by the finish command after the target
1112 has stopped. In asynchronous mode, we wait for the target to stop in
1113 the call to poll or select in the event loop, so it is impossible to
1114 do all the stuff as part of the finish_command function itself. The
1115 only chance we have to complete this command is in
1116 fetch_inferior_event, which is called by the event loop as soon as it
1117 detects that the target has stopped. This function is called via the
1118 cmd_continuation pointer. */
1120 finish_command_continuation (struct continuation_arg
*arg
)
1122 register struct symbol
*function
;
1123 struct breakpoint
*breakpoint
;
1124 struct cleanup
*cleanups
;
1126 breakpoint
= (struct breakpoint
*) arg
->data
.pointer
;
1127 function
= (struct symbol
*) arg
->next
->data
.pointer
;
1128 cleanups
= (struct cleanup
*) arg
->next
->next
->data
.pointer
;
1130 if (bpstat_find_breakpoint (stop_bpstat
, breakpoint
) != NULL
1133 struct type
*value_type
;
1137 value_type
= TYPE_TARGET_TYPE (SYMBOL_TYPE (function
));
1139 internal_error (__FILE__
, __LINE__
,
1140 "finish_command: function has no target type");
1142 if (TYPE_CODE (value_type
) == TYPE_CODE_VOID
)
1144 do_exec_cleanups (cleanups
);
1148 funcaddr
= BLOCK_START (SYMBOL_BLOCK_VALUE (function
));
1150 struct_return
= using_struct_return (value_of_variable (function
, NULL
),
1152 check_typedef (value_type
),
1153 BLOCK_GCC_COMPILED (SYMBOL_BLOCK_VALUE (function
)));
1155 print_return_value (struct_return
, value_type
);
1157 do_exec_cleanups (cleanups
);
1160 /* "finish": Set a temporary breakpoint at the place
1161 the selected frame will return to, then continue. */
1164 finish_command (char *arg
, int from_tty
)
1166 struct symtab_and_line sal
;
1167 register struct frame_info
*frame
;
1168 register struct symbol
*function
;
1169 struct breakpoint
*breakpoint
;
1170 struct cleanup
*old_chain
;
1171 struct continuation_arg
*arg1
, *arg2
, *arg3
;
1175 /* Find out whether we must run in the background. */
1177 async_exec
= strip_bg_char (&arg
);
1179 /* If we must run in the background, but the target can't do it,
1181 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
1182 error ("Asynchronous execution not supported on this target.");
1184 /* If we are not asked to run in the bg, then prepare to run in the
1185 foreground, synchronously. */
1186 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
1188 /* Simulate synchronous execution */
1189 async_disable_stdin ();
1193 error ("The \"finish\" command does not take any arguments.");
1194 if (!target_has_execution
)
1195 error ("The program is not running.");
1196 if (deprecated_selected_frame
== NULL
)
1197 error ("No selected frame.");
1199 frame
= get_prev_frame (deprecated_selected_frame
);
1201 error ("\"finish\" not meaningful in the outermost frame.");
1203 clear_proceed_status ();
1205 sal
= find_pc_line (get_frame_pc (frame
), 0);
1206 sal
.pc
= get_frame_pc (frame
);
1208 breakpoint
= set_momentary_breakpoint (sal
, get_frame_id (frame
), bp_finish
);
1210 if (!event_loop_p
|| !target_can_async_p ())
1211 old_chain
= make_cleanup_delete_breakpoint (breakpoint
);
1213 old_chain
= make_exec_cleanup_delete_breakpoint (breakpoint
);
1215 /* Find the function we will return from. */
1217 function
= find_pc_function (get_frame_pc (deprecated_selected_frame
));
1219 /* Print info on the selected frame, including level number
1223 printf_filtered ("Run till exit from ");
1224 print_stack_frame (deprecated_selected_frame
,
1225 frame_relative_level (deprecated_selected_frame
), 0);
1228 /* If running asynchronously and the target support asynchronous
1229 execution, set things up for the rest of the finish command to be
1230 completed later on, when gdb has detected that the target has
1231 stopped, in fetch_inferior_event. */
1232 if (event_loop_p
&& target_can_async_p ())
1235 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
1237 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
1239 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
1243 arg1
->data
.pointer
= breakpoint
;
1244 arg2
->data
.pointer
= function
;
1245 arg3
->data
.pointer
= old_chain
;
1246 add_continuation (finish_command_continuation
, arg1
);
1249 proceed_to_finish
= 1; /* We want stop_registers, please... */
1250 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
1252 /* Do this only if not running asynchronously or if the target
1253 cannot do async execution. Otherwise, complete this command when
1254 the target actually stops, in fetch_inferior_event. */
1255 if (!event_loop_p
|| !target_can_async_p ())
1258 /* Did we stop at our breakpoint? */
1259 if (bpstat_find_breakpoint (stop_bpstat
, breakpoint
) != NULL
1262 struct type
*value_type
;
1266 value_type
= TYPE_TARGET_TYPE (SYMBOL_TYPE (function
));
1268 internal_error (__FILE__
, __LINE__
,
1269 "finish_command: function has no target type");
1271 /* FIXME: Shouldn't we do the cleanups before returning? */
1272 if (TYPE_CODE (value_type
) == TYPE_CODE_VOID
)
1275 funcaddr
= BLOCK_START (SYMBOL_BLOCK_VALUE (function
));
1278 using_struct_return (value_of_variable (function
, NULL
),
1280 check_typedef (value_type
),
1281 BLOCK_GCC_COMPILED (SYMBOL_BLOCK_VALUE (function
)));
1283 print_return_value (struct_return
, value_type
);
1285 do_cleanups (old_chain
);
1291 program_info (char *args
, int from_tty
)
1293 bpstat bs
= stop_bpstat
;
1294 int num
= bpstat_num (&bs
);
1296 if (!target_has_execution
)
1298 printf_filtered ("The program being debugged is not being run.\n");
1302 target_files_info ();
1303 printf_filtered ("Program stopped at %s.\n",
1304 local_hex_string ((unsigned long) stop_pc
));
1306 printf_filtered ("It stopped after being stepped.\n");
1309 /* There may be several breakpoints in the same place, so this
1310 isn't as strange as it seems. */
1315 printf_filtered ("It stopped at a breakpoint that has ");
1316 printf_filtered ("since been deleted.\n");
1319 printf_filtered ("It stopped at breakpoint %d.\n", num
);
1320 num
= bpstat_num (&bs
);
1323 else if (stop_signal
!= TARGET_SIGNAL_0
)
1325 printf_filtered ("It stopped with signal %s, %s.\n",
1326 target_signal_to_name (stop_signal
),
1327 target_signal_to_string (stop_signal
));
1332 printf_filtered ("Type \"info stack\" or \"info registers\" ");
1333 printf_filtered ("for more information.\n");
1338 environment_info (char *var
, int from_tty
)
1342 register char *val
= get_in_environ (inferior_environ
, var
);
1345 puts_filtered (var
);
1346 puts_filtered (" = ");
1347 puts_filtered (val
);
1348 puts_filtered ("\n");
1352 puts_filtered ("Environment variable \"");
1353 puts_filtered (var
);
1354 puts_filtered ("\" not defined.\n");
1359 register char **vector
= environ_vector (inferior_environ
);
1362 puts_filtered (*vector
++);
1363 puts_filtered ("\n");
1369 set_environment_command (char *arg
, int from_tty
)
1371 register char *p
, *val
, *var
;
1375 error_no_arg ("environment variable and value");
1377 /* Find seperation between variable name and value */
1378 p
= (char *) strchr (arg
, '=');
1379 val
= (char *) strchr (arg
, ' ');
1381 if (p
!= 0 && val
!= 0)
1383 /* We have both a space and an equals. If the space is before the
1384 equals, walk forward over the spaces til we see a nonspace
1385 (possibly the equals). */
1390 /* Now if the = is after the char following the spaces,
1391 take the char following the spaces. */
1395 else if (val
!= 0 && p
== 0)
1399 error_no_arg ("environment variable to set");
1401 if (p
== 0 || p
[1] == 0)
1405 p
= arg
+ strlen (arg
); /* So that savestring below will work */
1409 /* Not setting variable value to null */
1411 while (*val
== ' ' || *val
== '\t')
1415 while (p
!= arg
&& (p
[-1] == ' ' || p
[-1] == '\t'))
1418 var
= savestring (arg
, p
- arg
);
1421 printf_filtered ("Setting environment variable ");
1422 printf_filtered ("\"%s\" to null value.\n", var
);
1423 set_in_environ (inferior_environ
, var
, "");
1426 set_in_environ (inferior_environ
, var
, val
);
1431 unset_environment_command (char *var
, int from_tty
)
1435 /* If there is no argument, delete all environment variables.
1436 Ask for confirmation if reading from the terminal. */
1437 if (!from_tty
|| query ("Delete all environment variables? "))
1439 free_environ (inferior_environ
);
1440 inferior_environ
= make_environ ();
1444 unset_in_environ (inferior_environ
, var
);
1447 /* Handle the execution path (PATH variable) */
1449 static const char path_var_name
[] = "PATH";
1453 path_info (char *args
, int from_tty
)
1455 puts_filtered ("Executable and object file path: ");
1456 puts_filtered (get_in_environ (inferior_environ
, path_var_name
));
1457 puts_filtered ("\n");
1460 /* Add zero or more directories to the front of the execution path. */
1463 path_command (char *dirname
, int from_tty
)
1468 env
= get_in_environ (inferior_environ
, path_var_name
);
1469 /* Can be null if path is not set */
1472 exec_path
= xstrdup (env
);
1473 mod_path (dirname
, &exec_path
);
1474 set_in_environ (inferior_environ
, path_var_name
, exec_path
);
1477 path_info ((char *) NULL
, from_tty
);
1481 #ifdef REGISTER_NAMES
1482 char *gdb_register_names
[] = REGISTER_NAMES
;
1484 /* Print out the machine register regnum. If regnum is -1, print all
1485 registers (print_all == 1) or all non-float and non-vector
1486 registers (print_all == 0).
1488 For most machines, having all_registers_info() print the
1489 register(s) one per line is good enough. If a different format is
1490 required, (eg, for MIPS or Pyramid 90x, which both have lots of
1491 regs), or there is an existing convention for showing all the
1492 registers, define the architecture method PRINT_REGISTERS_INFO to
1493 provide that format. */
1496 default_print_registers_info (struct gdbarch
*gdbarch
,
1497 struct ui_file
*file
,
1498 struct frame_info
*frame
,
1499 int regnum
, int print_all
)
1502 const int numregs
= NUM_REGS
+ NUM_PSEUDO_REGS
;
1503 char raw_buffer
[MAX_REGISTER_SIZE
];
1504 char virtual_buffer
[MAX_REGISTER_SIZE
];
1506 if (DEPRECATED_DO_REGISTERS_INFO_P ())
1508 DEPRECATED_DO_REGISTERS_INFO (regnum
, print_all
);
1512 for (i
= 0; i
< numregs
; i
++)
1514 /* Decide between printing all regs, non-float / vector regs, or
1520 if (!gdbarch_register_reggroup_p (gdbarch
, i
, all_reggroup
))
1525 if (!gdbarch_register_reggroup_p (gdbarch
, i
, general_reggroup
))
1535 /* If the register name is empty, it is undefined for this
1536 processor, so don't display anything. */
1537 if (REGISTER_NAME (i
) == NULL
|| *(REGISTER_NAME (i
)) == '\0')
1540 fputs_filtered (REGISTER_NAME (i
), file
);
1541 print_spaces_filtered (15 - strlen (REGISTER_NAME (i
)), file
);
1543 /* Get the data in raw format. */
1544 if (! frame_register_read (frame
, i
, raw_buffer
))
1546 fprintf_filtered (file
, "*value not available*\n");
1550 /* FIXME: cagney/2002-08-03: This code shouldn't be necessary.
1551 The function frame_register_read() should have returned the
1552 pre-cooked register so no conversion is necessary. */
1553 /* Convert raw data to virtual format if necessary. */
1554 if (REGISTER_CONVERTIBLE (i
))
1556 REGISTER_CONVERT_TO_VIRTUAL (i
, register_type (current_gdbarch
, i
),
1557 raw_buffer
, virtual_buffer
);
1561 memcpy (virtual_buffer
, raw_buffer
,
1562 REGISTER_VIRTUAL_SIZE (i
));
1565 /* If virtual format is floating, print it that way, and in raw
1567 if (TYPE_CODE (register_type (current_gdbarch
, i
)) == TYPE_CODE_FLT
)
1571 val_print (register_type (current_gdbarch
, i
), virtual_buffer
, 0, 0,
1572 file
, 0, 1, 0, Val_pretty_default
);
1574 fprintf_filtered (file
, "\t(raw 0x");
1575 for (j
= 0; j
< REGISTER_RAW_SIZE (i
); j
++)
1578 if (TARGET_BYTE_ORDER
== BFD_ENDIAN_BIG
)
1581 idx
= REGISTER_RAW_SIZE (i
) - 1 - j
;
1582 fprintf_filtered (file
, "%02x", (unsigned char) raw_buffer
[idx
]);
1584 fprintf_filtered (file
, ")");
1588 /* Print the register in hex. */
1589 val_print (register_type (current_gdbarch
, i
), virtual_buffer
, 0, 0,
1590 file
, 'x', 1, 0, Val_pretty_default
);
1591 /* If not a vector register, print it also according to its
1593 if (TYPE_VECTOR (register_type (current_gdbarch
, i
)) == 0)
1595 fprintf_filtered (file
, "\t");
1596 val_print (register_type (current_gdbarch
, i
), virtual_buffer
, 0, 0,
1597 file
, 0, 1, 0, Val_pretty_default
);
1601 fprintf_filtered (file
, "\n");
1606 registers_info (char *addr_exp
, int fpregs
)
1608 int regnum
, numregs
;
1611 if (!target_has_registers
)
1612 error ("The program has no registers now.");
1613 if (deprecated_selected_frame
== NULL
)
1614 error ("No selected frame.");
1618 gdbarch_print_registers_info (current_gdbarch
, gdb_stdout
,
1619 deprecated_selected_frame
, -1, fpregs
);
1623 while (*addr_exp
!= '\0')
1628 /* Keep skipping leading white space. */
1629 if (isspace ((*addr_exp
)))
1635 /* Discard any leading ``$''. Check that there is something
1636 resembling a register following it. */
1637 if (addr_exp
[0] == '$')
1639 if (isspace ((*addr_exp
)) || (*addr_exp
) == '\0')
1640 error ("Missing register name");
1642 /* Find the start/end of this register name/num/group. */
1644 while ((*addr_exp
) != '\0' && !isspace ((*addr_exp
)))
1648 /* Figure out what we've found and display it. */
1650 /* A register name? */
1652 int regnum
= frame_map_name_to_regnum (start
, end
- start
);
1655 gdbarch_print_registers_info (current_gdbarch
, gdb_stdout
,
1656 deprecated_selected_frame
, regnum
, fpregs
);
1661 /* A register number? (how portable is this one?). */
1664 int regnum
= strtol (start
, &endptr
, 0);
1667 && regnum
< NUM_REGS
+ NUM_PSEUDO_REGS
)
1669 gdbarch_print_registers_info (current_gdbarch
, gdb_stdout
,
1670 deprecated_selected_frame
, regnum
, fpregs
);
1675 /* A register group? */
1677 struct reggroup
*const *group
;
1678 for (group
= reggroups (current_gdbarch
);
1682 /* Don't bother with a length check. Should the user
1683 enter a short register group name, go with the first
1684 group that matches. */
1685 if (strncmp (start
, reggroup_name ((*group
)), end
- start
) == 0)
1688 if ((*group
) != NULL
)
1691 for (regnum
= 0; regnum
< NUM_REGS
+ NUM_PSEUDO_REGS
; regnum
++)
1693 if (gdbarch_register_reggroup_p (current_gdbarch
, regnum
,
1695 gdbarch_print_registers_info (current_gdbarch
,
1696 gdb_stdout
, deprecated_selected_frame
,
1703 /* Nothing matched. */
1704 error ("Invalid register `%.*s'", (int) (end
- start
), start
);
1709 all_registers_info (char *addr_exp
, int from_tty
)
1711 registers_info (addr_exp
, 1);
1715 nofp_registers_info (char *addr_exp
, int from_tty
)
1717 registers_info (addr_exp
, 0);
1721 print_vector_info (struct gdbarch
*gdbarch
, struct ui_file
*file
,
1722 struct frame_info
*frame
, const char *args
)
1724 if (!target_has_registers
)
1725 error ("The program has no registers now.");
1726 if (deprecated_selected_frame
== NULL
)
1727 error ("No selected frame.");
1729 if (gdbarch_print_vector_info_p (gdbarch
))
1730 gdbarch_print_vector_info (gdbarch
, file
, frame
, args
);
1734 int printed_something
= 0;
1736 for (regnum
= 0; regnum
< NUM_REGS
+ NUM_PSEUDO_REGS
; regnum
++)
1738 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, vector_reggroup
))
1740 printed_something
= 1;
1741 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
1744 if (!printed_something
)
1745 fprintf_filtered (file
, "No vector information\n");
1750 vector_info (char *args
, int from_tty
)
1752 print_vector_info (current_gdbarch
, gdb_stdout
, deprecated_selected_frame
, args
);
1758 * Should save/restore the tty state since it might be that the
1759 * program to be debugged was started on this tty and it wants
1760 * the tty in some state other than what we want. If it's running
1761 * on another terminal or without a terminal, then saving and
1762 * restoring the tty state is a harmless no-op.
1763 * This only needs to be done if we are attaching to a process.
1768 takes a program started up outside of gdb and ``attaches'' to it.
1769 This stops it cold in its tracks and allows us to start debugging it.
1770 and wait for the trace-trap that results from attaching. */
1773 attach_command (char *args
, int from_tty
)
1776 char *full_exec_path
= NULL
;
1778 dont_repeat (); /* Not for the faint of heart */
1780 if (target_has_execution
)
1782 if (query ("A program is being debugged already. Kill it? "))
1785 error ("Not killed.");
1788 target_attach (args
, from_tty
);
1790 /* Set up the "saved terminal modes" of the inferior
1791 based on what modes we are starting it with. */
1792 target_terminal_init ();
1794 /* Install inferior's terminal modes. */
1795 target_terminal_inferior ();
1797 /* Set up execution context to know that we should return from
1798 wait_for_inferior as soon as the target reports a stop. */
1799 init_wait_for_inferior ();
1800 clear_proceed_status ();
1802 /* No traps are generated when attaching to inferior under Mach 3
1804 #ifndef ATTACH_NO_WAIT
1805 /* Careful here. See comments in inferior.h. Basically some OSes
1806 don't ignore SIGSTOPs on continue requests anymore. We need a
1807 way for handle_inferior_event to reset the stop_signal variable
1808 after an attach, and this is what STOP_QUIETLY_NO_SIGSTOP is for. */
1809 stop_soon
= STOP_QUIETLY_NO_SIGSTOP
;
1810 wait_for_inferior ();
1811 stop_soon
= NO_STOP_QUIETLY
;
1815 * If no exec file is yet known, try to determine it from the
1818 exec_file
= (char *) get_exec_file (0);
1821 exec_file
= target_pid_to_exec_file (PIDGET (inferior_ptid
));
1824 /* It's possible we don't have a full path, but rather just a
1825 filename. Some targets, such as HP-UX, don't provide the
1828 Attempt to qualify the filename against the source path.
1829 (If that fails, we'll just fall back on the original
1830 filename. Not much more we can do...)
1832 if (!source_full_path_of (exec_file
, &full_exec_path
))
1833 full_exec_path
= savestring (exec_file
, strlen (exec_file
));
1835 exec_file_attach (full_exec_path
, from_tty
);
1836 symbol_file_add_main (full_exec_path
, from_tty
);
1841 /* Add shared library symbols from the newly attached process, if any. */
1842 SOLIB_ADD ((char *) 0, from_tty
, ¤t_target
, auto_solib_add
);
1843 re_enable_breakpoints_in_shlibs ();
1846 /* Take any necessary post-attaching actions for this platform.
1848 target_post_attach (PIDGET (inferior_ptid
));
1858 * takes a program previously attached to and detaches it.
1859 * The program resumes execution and will no longer stop
1860 * on signals, etc. We better not have left any breakpoints
1861 * in the program or it'll die when it hits one. For this
1862 * to work, it may be necessary for the process to have been
1863 * previously attached. It *might* work if the program was
1864 * started via the normal ptrace (PTRACE_TRACEME).
1868 detach_command (char *args
, int from_tty
)
1870 dont_repeat (); /* Not for the faint of heart */
1871 target_detach (args
, from_tty
);
1872 #if defined(SOLIB_RESTART)
1879 /* Stop the execution of the target while running in async mode, in
1882 interrupt_target_command (char *args
, int from_tty
)
1884 if (event_loop_p
&& target_can_async_p ())
1886 dont_repeat (); /* Not for the faint of heart */
1893 print_float_info (struct gdbarch
*gdbarch
, struct ui_file
*file
,
1894 struct frame_info
*frame
, const char *args
)
1896 if (!target_has_registers
)
1897 error ("The program has no registers now.");
1898 if (deprecated_selected_frame
== NULL
)
1899 error ("No selected frame.");
1901 if (gdbarch_print_float_info_p (gdbarch
))
1902 gdbarch_print_float_info (gdbarch
, file
, frame
, args
);
1906 int printed_something
= 0;
1908 for (regnum
= 0; regnum
< NUM_REGS
+ NUM_PSEUDO_REGS
; regnum
++)
1910 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, float_reggroup
))
1912 printed_something
= 1;
1913 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
1916 if (!printed_something
)
1917 fprintf_filtered (file
, "\
1918 No floating-point info available for this processor.\n");
1923 float_info (char *args
, int from_tty
)
1925 print_float_info (current_gdbarch
, gdb_stdout
, deprecated_selected_frame
, args
);
1930 unset_command (char *args
, int from_tty
)
1932 printf_filtered ("\"unset\" must be followed by the name of ");
1933 printf_filtered ("an unset subcommand.\n");
1934 help_list (unsetlist
, "unset ", -1, gdb_stdout
);
1938 _initialize_infcmd (void)
1940 struct cmd_list_element
*c
;
1942 c
= add_com ("tty", class_run
, tty_command
,
1943 "Set terminal for future runs of program being debugged.");
1944 set_cmd_completer (c
, filename_completer
);
1946 c
= add_set_cmd ("args", class_run
, var_string_noescape
,
1947 (char *) &inferior_args
,
1948 "Set argument list to give program being debugged when it is started.\n\
1949 Follow this command with any number of args, to be passed to the program.",
1951 set_cmd_completer (c
, filename_completer
);
1952 set_cmd_sfunc (c
, notice_args_set
);
1953 c
= add_show_from_set (c
, &showlist
);
1954 set_cmd_sfunc (c
, notice_args_read
);
1957 ("environment", no_class
, environment_info
,
1958 "The environment to give the program, or one variable's value.\n\
1959 With an argument VAR, prints the value of environment variable VAR to\n\
1960 give the program being debugged. With no arguments, prints the entire\n\
1961 environment to be given to the program.", &showlist
);
1962 set_cmd_completer (c
, noop_completer
);
1964 add_prefix_cmd ("unset", no_class
, unset_command
,
1965 "Complement to certain \"set\" commands.",
1966 &unsetlist
, "unset ", 0, &cmdlist
);
1968 c
= add_cmd ("environment", class_run
, unset_environment_command
,
1969 "Cancel environment variable VAR for the program.\n\
1970 This does not affect the program until the next \"run\" command.",
1972 set_cmd_completer (c
, noop_completer
);
1974 c
= add_cmd ("environment", class_run
, set_environment_command
,
1975 "Set environment variable value to give the program.\n\
1976 Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\
1977 VALUES of environment variables are uninterpreted strings.\n\
1978 This does not affect the program until the next \"run\" command.",
1980 set_cmd_completer (c
, noop_completer
);
1982 c
= add_com ("path", class_files
, path_command
,
1983 "Add directory DIR(s) to beginning of search path for object files.\n\
1984 $cwd in the path means the current working directory.\n\
1985 This path is equivalent to the $PATH shell variable. It is a list of\n\
1986 directories, separated by colons. These directories are searched to find\n\
1987 fully linked executable files and separately compiled object files as needed.");
1988 set_cmd_completer (c
, filename_completer
);
1990 c
= add_cmd ("paths", no_class
, path_info
,
1991 "Current search path for finding object files.\n\
1992 $cwd in the path means the current working directory.\n\
1993 This path is equivalent to the $PATH shell variable. It is a list of\n\
1994 directories, separated by colons. These directories are searched to find\n\
1995 fully linked executable files and separately compiled object files as needed.",
1997 set_cmd_completer (c
, noop_completer
);
1999 add_com ("attach", class_run
, attach_command
,
2000 "Attach to a process or file outside of GDB.\n\
2001 This command attaches to another target, of the same type as your last\n\
2002 \"target\" command (\"info files\" will show your target stack).\n\
2003 The command may take as argument a process id or a device file.\n\
2004 For a process id, you must have permission to send the process a signal,\n\
2005 and it must have the same effective uid as the debugger.\n\
2006 When using \"attach\" with a process id, the debugger finds the\n\
2007 program running in the process, looking first in the current working\n\
2008 directory, or (if not found there) using the source file search path\n\
2009 (see the \"directory\" command). You can also use the \"file\" command\n\
2010 to specify the program, and to load its symbol table.");
2012 add_com ("detach", class_run
, detach_command
,
2013 "Detach a process or file previously attached.\n\
2014 If a process, it is no longer traced, and it continues its execution. If\n\
2015 you were debugging a file, the file is closed and gdb no longer accesses it.");
2017 add_com ("signal", class_run
, signal_command
,
2018 "Continue program giving it signal specified by the argument.\n\
2019 An argument of \"0\" means continue program without giving it a signal.");
2021 add_com ("stepi", class_run
, stepi_command
,
2022 "Step one instruction exactly.\n\
2023 Argument N means do this N times (or till program stops for another reason).");
2024 add_com_alias ("si", "stepi", class_alias
, 0);
2026 add_com ("nexti", class_run
, nexti_command
,
2027 "Step one instruction, but proceed through subroutine calls.\n\
2028 Argument N means do this N times (or till program stops for another reason).");
2029 add_com_alias ("ni", "nexti", class_alias
, 0);
2031 add_com ("finish", class_run
, finish_command
,
2032 "Execute until selected stack frame returns.\n\
2033 Upon return, the value returned is printed and put in the value history.");
2035 add_com ("next", class_run
, next_command
,
2036 "Step program, proceeding through subroutine calls.\n\
2037 Like the \"step\" command as long as subroutine calls do not happen;\n\
2038 when they do, the call is treated as one instruction.\n\
2039 Argument N means do this N times (or till program stops for another reason).");
2040 add_com_alias ("n", "next", class_run
, 1);
2042 add_com_alias ("S", "next", class_run
, 1);
2044 add_com ("step", class_run
, step_command
,
2045 "Step program until it reaches a different source line.\n\
2046 Argument N means do this N times (or till program stops for another reason).");
2047 add_com_alias ("s", "step", class_run
, 1);
2049 c
= add_com ("until", class_run
, until_command
,
2050 "Execute until the program reaches a source line greater than the current\n\
2051 or a specified location (same args as break command) within the current frame.");
2052 set_cmd_completer (c
, location_completer
);
2053 add_com_alias ("u", "until", class_run
, 1);
2055 c
= add_com ("advance", class_run
, advance_command
,
2056 "Continue the program up to the given location (same form as args for break command).\n\
2057 Execution will also stop upon exit from the current stack frame.");
2058 set_cmd_completer (c
, location_completer
);
2060 c
= add_com ("jump", class_run
, jump_command
,
2061 "Continue program being debugged at specified line or address.\n\
2062 Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\
2063 for an address to start at.");
2064 set_cmd_completer (c
, location_completer
);
2068 c
= add_com ("go", class_run
, go_command
,
2069 "Usage: go <location>\n\
2070 Continue program being debugged, stopping at specified line or \n\
2072 Give as argument either LINENUM or *ADDR, where ADDR is an \n\
2073 expression for an address to start at.\n\
2074 This command is a combination of tbreak and jump.");
2075 set_cmd_completer (c
, location_completer
);
2079 add_com_alias ("g", "go", class_run
, 1);
2081 add_com ("continue", class_run
, continue_command
,
2082 "Continue program being debugged, after signal or breakpoint.\n\
2083 If proceeding from breakpoint, a number N may be used as an argument,\n\
2084 which means to set the ignore count of that breakpoint to N - 1 (so that\n\
2085 the breakpoint won't break until the Nth time it is reached).");
2086 add_com_alias ("c", "cont", class_run
, 1);
2087 add_com_alias ("fg", "cont", class_run
, 1);
2089 c
= add_com ("run", class_run
, run_command
,
2090 "Start debugged program. You may specify arguments to give it.\n\
2091 Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\
2092 Input and output redirection with \">\", \"<\", or \">>\" are also allowed.\n\n\
2093 With no arguments, uses arguments last specified (with \"run\" or \"set args\").\n\
2094 To cancel previous arguments and run with no arguments,\n\
2095 use \"set args\" without arguments.");
2096 set_cmd_completer (c
, filename_completer
);
2097 add_com_alias ("r", "run", class_run
, 1);
2099 add_com ("R", class_run
, run_no_args_command
,
2100 "Start debugged program with no arguments.");
2102 add_com ("interrupt", class_run
, interrupt_target_command
,
2103 "Interrupt the execution of the debugged program.");
2105 add_info ("registers", nofp_registers_info
,
2106 "List of integer registers and their contents, for selected stack frame.\n\
2107 Register name as argument means describe only that register.");
2108 add_info_alias ("r", "registers", 1);
2111 add_com ("lr", class_info
, nofp_registers_info
,
2112 "List of integer registers and their contents, for selected stack frame.\n\
2113 Register name as argument means describe only that register.");
2114 add_info ("all-registers", all_registers_info
,
2115 "List of all registers and their contents, for selected stack frame.\n\
2116 Register name as argument means describe only that register.");
2118 add_info ("program", program_info
,
2119 "Execution status of the program.");
2121 add_info ("float", float_info
,
2122 "Print the status of the floating point unit\n");
2124 add_info ("vector", vector_info
,
2125 "Print the status of the vector unit\n");
2127 inferior_environ
= make_environ ();
2128 init_environ (inferior_environ
);