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"
47 #include "gdb_assert.h"
49 /* Functions exported for general use, in inferior.h: */
51 void all_registers_info (char *, int);
53 void registers_info (char *, int);
55 void nexti_command (char *, int);
57 void stepi_command (char *, int);
59 void continue_command (char *, int);
61 void interrupt_target_command (char *args
, int from_tty
);
63 /* Local functions: */
65 static void nofp_registers_info (char *, int);
67 static void print_return_value (int struct_return
, struct type
*value_type
);
69 static void finish_command_continuation (struct continuation_arg
*);
71 static void until_next_command (int);
73 static void until_command (char *, int);
75 static void path_info (char *, int);
77 static void path_command (char *, int);
79 static void unset_command (char *, int);
81 static void float_info (char *, int);
83 static void detach_command (char *, int);
85 static void disconnect_command (char *, int);
87 static void unset_environment_command (char *, int);
89 static void set_environment_command (char *, int);
91 static void environment_info (char *, int);
93 static void program_info (char *, int);
95 static void finish_command (char *, int);
97 static void signal_command (char *, int);
99 static void jump_command (char *, int);
101 static void step_1 (int, int, char *);
102 static void step_once (int skip_subroutines
, int single_inst
, int count
);
103 static void step_1_continuation (struct continuation_arg
*arg
);
105 static void next_command (char *, int);
107 static void step_command (char *, int);
109 static void run_command (char *, int);
111 static void run_no_args_command (char *args
, int from_tty
);
113 static void go_command (char *line_no
, int from_tty
);
115 static int strip_bg_char (char **);
117 void _initialize_infcmd (void);
119 #define GO_USAGE "Usage: go <location>\n"
121 #define ERROR_NO_INFERIOR \
122 if (!target_has_execution) error ("The program is not being run.");
124 /* String containing arguments to give to the program, separated by spaces.
125 Empty string (pointer to '\0') means no args. */
127 static char *inferior_args
;
129 /* The inferior arguments as a vector. If INFERIOR_ARGC is nonzero,
130 then we must compute INFERIOR_ARGS from this (via the target). */
132 static int inferior_argc
;
133 static char **inferior_argv
;
135 /* File name for default use for standard in/out in the inferior. */
137 char *inferior_io_terminal
;
139 /* Pid of our debugged inferior, or 0 if no inferior now.
140 Since various parts of infrun.c test this to see whether there is a program
141 being debugged it should be nonzero (currently 3 is used) for remote
144 ptid_t inferior_ptid
;
146 /* Last signal that the inferior received (why it stopped). */
148 enum target_signal stop_signal
;
150 /* Address at which inferior stopped. */
154 /* Chain containing status of breakpoint(s) that we have stopped at. */
158 /* Flag indicating that a command has proceeded the inferior past the
159 current breakpoint. */
161 int breakpoint_proceeded
;
163 /* Nonzero if stopped due to a step command. */
167 /* Nonzero if stopped due to completion of a stack dummy routine. */
169 int stop_stack_dummy
;
171 /* Nonzero if stopped due to a random (unexpected) signal in inferior
174 int stopped_by_random_signal
;
176 /* Range to single step within.
177 If this is nonzero, respond to a single-step signal
178 by continuing to step if the pc is in this range. */
180 CORE_ADDR step_range_start
; /* Inclusive */
181 CORE_ADDR step_range_end
; /* Exclusive */
183 /* Stack frame address as of when stepping command was issued.
184 This is how we know when we step into a subroutine call,
185 and how to set the frame for the breakpoint used to step out. */
187 struct frame_id step_frame_id
;
189 /* Our notion of the current stack pointer. */
193 enum step_over_calls_kind step_over_calls
;
195 /* If stepping, nonzero means step count is > 1
196 so don't print frame next time inferior stops
197 if it stops due to stepping. */
201 /* Environment to use for running inferior,
202 in format described in environ.h. */
204 struct environ
*inferior_environ
;
206 /* Accessor routines. */
209 get_inferior_args (void)
211 if (inferior_argc
!= 0)
215 n
= gdbarch_construct_inferior_arguments (current_gdbarch
,
216 inferior_argc
, inferior_argv
);
217 old
= set_inferior_args (n
);
221 if (inferior_args
== NULL
)
222 inferior_args
= xstrdup ("");
224 return inferior_args
;
228 set_inferior_args (char *newargs
)
230 char *saved_args
= inferior_args
;
232 inferior_args
= newargs
;
240 set_inferior_args_vector (int argc
, char **argv
)
242 inferior_argc
= argc
;
243 inferior_argv
= argv
;
246 /* Notice when `set args' is run. */
248 notice_args_set (char *args
, int from_tty
, struct cmd_list_element
*c
)
254 /* Notice when `show args' is run. */
256 notice_args_read (char *args
, int from_tty
, struct cmd_list_element
*c
)
258 /* Might compute the value. */
259 get_inferior_args ();
263 /* Compute command-line string given argument vector. This does the
264 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');
374 tty_command (char *file
, int from_tty
)
377 error_no_arg ("terminal name for running target process");
379 inferior_io_terminal
= savestring (file
, strlen (file
));
383 run_command (char *args
, int from_tty
)
389 if (! ptid_equal (inferior_ptid
, null_ptid
) && target_has_execution
)
392 && !query ("The program being debugged has been started already.\n\
393 Start it from the beginning? "))
394 error ("Program not restarted.");
396 #if defined(SOLIB_RESTART)
399 init_wait_for_inferior ();
402 clear_breakpoint_hit_counts ();
404 /* Purge old solib objfiles. */
405 objfile_purge_solibs ();
407 do_run_cleanups (NULL
);
409 /* The comment here used to read, "The exec file is re-read every
410 time we do a generic_mourn_inferior, so we just have to worry
411 about the symbol file." The `generic_mourn_inferior' function
412 gets called whenever the program exits. However, suppose the
413 program exits, and *then* the executable file changes? We need
414 to check again here. Since reopen_exec_file doesn't do anything
415 if the timestamp hasn't changed, I don't see the harm. */
419 exec_file
= (char *) get_exec_file (0);
421 /* We keep symbols from add-symbol-file, on the grounds that the
422 user might want to add some symbols before running the program
423 (right?). But sometimes (dynamic loading where the user manually
424 introduces the new symbols with add-symbol-file), the code which
425 the symbols describe does not persist between runs. Currently
426 the user has to manually nuke all symbols between runs if they
427 want them to go away (PR 2207). This is probably reasonable. */
431 if (event_loop_p
&& target_can_async_p ())
432 async_disable_stdin ();
436 int async_exec
= strip_bg_char (&args
);
438 /* If we get a request for running in the bg but the target
439 doesn't support it, error out. */
440 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
441 error ("Asynchronous execution not supported on this target.");
443 /* If we don't get a request of running in the bg, then we need
444 to simulate synchronous (fg) execution. */
445 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
447 /* Simulate synchronous execution */
448 async_disable_stdin ();
451 /* If there were other args, beside '&', process them. */
454 char *old_args
= set_inferior_args (xstrdup (args
));
461 ui_out_field_string (uiout
, NULL
, "Starting program");
462 ui_out_text (uiout
, ": ");
464 ui_out_field_string (uiout
, "execfile", exec_file
);
465 ui_out_spaces (uiout
, 1);
466 /* We call get_inferior_args() because we might need to compute
468 ui_out_field_string (uiout
, "infargs", get_inferior_args ());
469 ui_out_text (uiout
, "\n");
470 ui_out_flush (uiout
);
473 /* We call get_inferior_args() because we might need to compute
475 target_create_inferior (exec_file
, get_inferior_args (),
476 environ_vector (inferior_environ
));
481 run_no_args_command (char *args
, int from_tty
)
483 char *old_args
= set_inferior_args (xstrdup (""));
489 continue_command (char *proc_count_exp
, int from_tty
)
494 /* Find out whether we must run in the background. */
495 if (proc_count_exp
!= NULL
)
496 async_exec
= strip_bg_char (&proc_count_exp
);
498 /* If we must run in the background, but the target can't do it,
500 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
501 error ("Asynchronous execution not supported on this target.");
503 /* If we are not asked to run in the bg, then prepare to run in the
504 foreground, synchronously. */
505 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
507 /* Simulate synchronous execution */
508 async_disable_stdin ();
511 /* If have argument (besides '&'), set proceed count of breakpoint
513 if (proc_count_exp
!= NULL
)
515 bpstat bs
= stop_bpstat
;
516 int num
= bpstat_num (&bs
);
517 if (num
== 0 && from_tty
)
520 ("Not stopped at any breakpoint; argument ignored.\n");
524 set_ignore_count (num
,
525 parse_and_eval_long (proc_count_exp
) - 1,
527 /* set_ignore_count prints a message ending with a period.
528 So print two spaces before "Continuing.". */
530 printf_filtered (" ");
531 num
= bpstat_num (&bs
);
536 printf_filtered ("Continuing.\n");
538 clear_proceed_status ();
540 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
543 /* 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. */
554 next_command (char *count_string
, int from_tty
)
556 step_1 (1, 0, count_string
);
559 /* Likewise, but step only one instruction. */
562 stepi_command (char *count_string
, int from_tty
)
564 step_1 (0, 1, count_string
);
568 nexti_command (char *count_string
, int from_tty
)
570 step_1 (1, 1, count_string
);
574 disable_longjmp_breakpoint_cleanup (void *ignore
)
576 disable_longjmp_breakpoint ();
580 step_1 (int skip_subroutines
, int single_inst
, char *count_string
)
583 struct frame_info
*frame
;
584 struct cleanup
*cleanups
= 0;
590 async_exec
= strip_bg_char (&count_string
);
592 /* If we get a request for running in the bg but the target
593 doesn't support it, error out. */
594 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
595 error ("Asynchronous execution not supported on this target.");
597 /* If we don't get a request of running in the bg, then we need
598 to simulate synchronous (fg) execution. */
599 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
601 /* Simulate synchronous execution */
602 async_disable_stdin ();
605 count
= count_string
? parse_and_eval_long (count_string
) : 1;
607 if (!single_inst
|| skip_subroutines
) /* leave si command alone */
609 enable_longjmp_breakpoint ();
610 if (!event_loop_p
|| !target_can_async_p ())
611 cleanups
= make_cleanup (disable_longjmp_breakpoint_cleanup
, 0 /*ignore*/);
613 make_exec_cleanup (disable_longjmp_breakpoint_cleanup
, 0 /*ignore*/);
616 /* In synchronous case, all is well, just use the regular for loop. */
617 if (!event_loop_p
|| !target_can_async_p ())
619 for (; count
> 0; count
--)
621 clear_proceed_status ();
623 frame
= get_current_frame ();
624 if (!frame
) /* Avoid coredump here. Why tho? */
625 error ("No current frame");
626 step_frame_id
= get_frame_id (frame
);
627 step_sp
= read_sp ();
631 find_pc_line_pc_range (stop_pc
, &step_range_start
, &step_range_end
);
632 if (step_range_end
== 0)
635 if (find_pc_partial_function (stop_pc
, &name
, &step_range_start
,
636 &step_range_end
) == 0)
637 error ("Cannot find bounds of current function");
639 target_terminal_ours ();
641 Single stepping until exit from function %s, \n\
642 which has no line number information.\n", name
);
647 /* Say we are stepping, but stop after one insn whatever it does. */
648 step_range_start
= step_range_end
= 1;
649 if (!skip_subroutines
)
651 Don't step over function calls, not even to functions lacking
653 step_over_calls
= STEP_OVER_NONE
;
656 if (skip_subroutines
)
657 step_over_calls
= STEP_OVER_ALL
;
659 step_multi
= (count
> 1);
660 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
665 /* FIXME: On nexti, this may have already been done (when we hit the
666 step resume break, I think). Probably this should be moved to
667 wait_for_inferior (near the top). */
668 #if defined (SHIFT_INST_REGS)
673 if (!single_inst
|| skip_subroutines
)
674 do_cleanups (cleanups
);
677 /* In case of asynchronous target things get complicated, do only
678 one step for now, before returning control to the event loop. Let
679 the continuation figure out how many other steps we need to do,
680 and handle them one at the time, through step_once(). */
683 if (event_loop_p
&& target_can_async_p ())
684 step_once (skip_subroutines
, single_inst
, count
);
688 /* Called after we are done with one step operation, to check whether
689 we need to step again, before we print the prompt and return control
690 to the user. If count is > 1, we will need to do one more call to
691 proceed(), via step_once(). Basically it is like step_once and
692 step_1_continuation are co-recursive. */
694 step_1_continuation (struct continuation_arg
*arg
)
697 int skip_subroutines
;
700 skip_subroutines
= arg
->data
.integer
;
701 single_inst
= arg
->next
->data
.integer
;
702 count
= arg
->next
->next
->data
.integer
;
706 /* FIXME: On nexti, this may have already been done (when we hit the
707 step resume break, I think). Probably this should be moved to
708 wait_for_inferior (near the top). */
709 #if defined (SHIFT_INST_REGS)
712 step_once (skip_subroutines
, single_inst
, count
- 1);
715 if (!single_inst
|| skip_subroutines
)
716 do_exec_cleanups (ALL_CLEANUPS
);
719 /* Do just one step operation. If count >1 we will have to set up a
720 continuation to be done after the target stops (after this one
721 step). This is useful to implement the 'step n' kind of commands, in
722 case of asynchronous targets. We had to split step_1 into two parts,
723 one to be done before proceed() and one afterwards. This function is
724 called in case of step n with n>1, after the first step operation has
727 step_once (int skip_subroutines
, int single_inst
, int count
)
729 struct continuation_arg
*arg1
;
730 struct continuation_arg
*arg2
;
731 struct continuation_arg
*arg3
;
732 struct frame_info
*frame
;
736 clear_proceed_status ();
738 frame
= get_current_frame ();
739 if (!frame
) /* Avoid coredump here. Why tho? */
740 error ("No current frame");
741 step_frame_id
= get_frame_id (frame
);
742 step_sp
= read_sp ();
746 find_pc_line_pc_range (stop_pc
, &step_range_start
, &step_range_end
);
748 /* If we have no line info, switch to stepi mode. */
749 if (step_range_end
== 0 && step_stop_if_no_debug
)
751 step_range_start
= step_range_end
= 1;
753 else if (step_range_end
== 0)
756 if (find_pc_partial_function (stop_pc
, &name
, &step_range_start
,
757 &step_range_end
) == 0)
758 error ("Cannot find bounds of current function");
760 target_terminal_ours ();
762 Single stepping until exit from function %s, \n\
763 which has no line number information.\n", name
);
768 /* Say we are stepping, but stop after one insn whatever it does. */
769 step_range_start
= step_range_end
= 1;
770 if (!skip_subroutines
)
772 Don't step over function calls, not even to functions lacking
774 step_over_calls
= STEP_OVER_NONE
;
777 if (skip_subroutines
)
778 step_over_calls
= STEP_OVER_ALL
;
780 step_multi
= (count
> 1);
782 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
784 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
786 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
788 arg1
->data
.integer
= skip_subroutines
;
790 arg2
->data
.integer
= single_inst
;
792 arg3
->data
.integer
= count
;
793 add_intermediate_continuation (step_1_continuation
, arg1
);
794 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
799 /* Continue program at specified address. */
802 jump_command (char *arg
, int from_tty
)
805 struct symtabs_and_lines sals
;
806 struct symtab_and_line sal
;
813 /* Find out whether we must run in the background. */
815 async_exec
= strip_bg_char (&arg
);
817 /* If we must run in the background, but the target can't do it,
819 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
820 error ("Asynchronous execution not supported on this target.");
822 /* If we are not asked to run in the bg, then prepare to run in the
823 foreground, synchronously. */
824 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
826 /* Simulate synchronous execution */
827 async_disable_stdin ();
831 error_no_arg ("starting address");
833 sals
= decode_line_spec_1 (arg
, 1);
836 error ("Unreasonable jump request");
842 if (sal
.symtab
== 0 && sal
.pc
== 0)
843 error ("No source file has been specified.");
845 resolve_sal_pc (&sal
); /* May error out */
847 /* See if we are trying to jump to another function. */
848 fn
= get_frame_function (get_current_frame ());
849 sfn
= find_pc_function (sal
.pc
);
850 if (fn
!= NULL
&& sfn
!= fn
)
852 if (!query ("Line %d is not in `%s'. Jump anyway? ", sal
.line
,
853 SYMBOL_PRINT_NAME (fn
)))
855 error ("Not confirmed.");
862 fixup_symbol_section (sfn
, 0);
863 if (section_is_overlay (SYMBOL_BFD_SECTION (sfn
)) &&
864 !section_is_mapped (SYMBOL_BFD_SECTION (sfn
)))
866 if (!query ("WARNING!!! Destination is in unmapped overlay! Jump anyway? "))
868 error ("Not confirmed.");
878 printf_filtered ("Continuing at ");
879 print_address_numeric (addr
, 1, gdb_stdout
);
880 printf_filtered (".\n");
883 clear_proceed_status ();
884 proceed (addr
, TARGET_SIGNAL_0
, 0);
888 /* Go to line or address in current procedure */
890 go_command (char *line_no
, int from_tty
)
892 if (line_no
== (char *) NULL
|| !*line_no
)
893 printf_filtered (GO_USAGE
);
896 tbreak_command (line_no
, from_tty
);
897 jump_command (line_no
, from_tty
);
902 /* Continue program giving it specified signal. */
905 signal_command (char *signum_exp
, int from_tty
)
907 enum target_signal oursig
;
909 dont_repeat (); /* Too dangerous. */
913 error_no_arg ("signal number");
915 /* It would be even slicker to make signal names be valid expressions,
916 (the type could be "enum $signal" or some such), then the user could
917 assign them to convenience variables. */
918 oursig
= target_signal_from_name (signum_exp
);
920 if (oursig
== TARGET_SIGNAL_UNKNOWN
)
922 /* No, try numeric. */
923 int num
= parse_and_eval_long (signum_exp
);
926 oursig
= TARGET_SIGNAL_0
;
928 oursig
= target_signal_from_command (num
);
933 if (oursig
== TARGET_SIGNAL_0
)
934 printf_filtered ("Continuing with no signal.\n");
936 printf_filtered ("Continuing with signal %s.\n",
937 target_signal_to_name (oursig
));
940 clear_proceed_status ();
941 /* "signal 0" should not get stuck if we are stopped at a breakpoint.
942 FIXME: Neither should "signal foo" but when I tried passing
943 (CORE_ADDR)-1 unconditionally I got a testsuite failure which I haven't
944 tried to track down yet. */
945 proceed (oursig
== TARGET_SIGNAL_0
? (CORE_ADDR
) -1 : stop_pc
, oursig
, 0);
948 /* Proceed until we reach a different source line with pc greater than
949 our current one or exit the function. We skip calls in both cases.
951 Note that eventually this command should probably be changed so
952 that only source lines are printed out when we hit the breakpoint
953 we set. This may involve changes to wait_for_inferior and the
954 proceed status code. */
957 until_next_command (int from_tty
)
959 struct frame_info
*frame
;
962 struct symtab_and_line sal
;
964 clear_proceed_status ();
966 frame
= get_current_frame ();
968 /* Step until either exited from this function or greater
969 than the current line (if in symbolic section) or pc (if
973 func
= find_pc_function (pc
);
977 struct minimal_symbol
*msymbol
= lookup_minimal_symbol_by_pc (pc
);
980 error ("Execution is not within a known function.");
982 step_range_start
= SYMBOL_VALUE_ADDRESS (msymbol
);
987 sal
= find_pc_line (pc
, 0);
989 step_range_start
= BLOCK_START (SYMBOL_BLOCK_VALUE (func
));
990 step_range_end
= sal
.end
;
993 step_over_calls
= STEP_OVER_ALL
;
994 step_frame_id
= get_frame_id (frame
);
995 step_sp
= read_sp ();
997 step_multi
= 0; /* Only one call to proceed */
999 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
1003 until_command (char *arg
, int from_tty
)
1007 if (!target_has_execution
)
1008 error ("The program is not running.");
1010 /* Find out whether we must run in the background. */
1012 async_exec
= strip_bg_char (&arg
);
1014 /* If we must run in the background, but the target can't do it,
1016 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
1017 error ("Asynchronous execution not supported on this target.");
1019 /* If we are not asked to run in the bg, then prepare to run in the
1020 foreground, synchronously. */
1021 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
1023 /* Simulate synchronous execution */
1024 async_disable_stdin ();
1028 until_break_command (arg
, from_tty
, 0);
1030 until_next_command (from_tty
);
1034 advance_command (char *arg
, int from_tty
)
1038 if (!target_has_execution
)
1039 error ("The program is not running.");
1042 error_no_arg ("a location");
1044 /* Find out whether we must run in the background. */
1046 async_exec
= strip_bg_char (&arg
);
1048 /* If we must run in the background, but the target can't do it,
1050 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
1051 error ("Asynchronous execution not supported on this target.");
1053 /* If we are not asked to run in the bg, then prepare to run in the
1054 foreground, synchronously. */
1055 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
1057 /* Simulate synchronous execution. */
1058 async_disable_stdin ();
1061 until_break_command (arg
, from_tty
, 1);
1065 /* Print the result of a function at the end of a 'finish' command. */
1067 print_return_value (int structure_return
, struct type
*value_type
)
1069 struct value
*value
;
1070 static struct ui_stream
*stb
= NULL
;
1072 if (!structure_return
)
1074 value
= register_value_being_returned (value_type
, stop_registers
);
1075 stb
= ui_out_stream_new (uiout
);
1076 ui_out_text (uiout
, "Value returned is ");
1077 ui_out_field_fmt (uiout
, "gdb-result-var", "$%d", record_latest_value (value
));
1078 ui_out_text (uiout
, " = ");
1079 value_print (value
, stb
->stream
, 0, Val_no_prettyprint
);
1080 ui_out_field_stream (uiout
, "return-value", stb
);
1081 ui_out_text (uiout
, "\n");
1083 /* FIXME: 2003-09-27: When returning from a nested inferior function
1084 call, it's possible (with no help from the architecture vector)
1085 to locate and return/print a "struct return" value. This is just
1086 a more complicated case of what is already being done in in the
1087 inferior function call code. In fact, when inferior function
1088 calls are made async, this will likely be made the norm. */
1089 else if (gdbarch_return_value_p (current_gdbarch
))
1090 /* We cannot determine the contents of the structure because it is
1091 on the stack, and we don't know where, since we did not
1092 initiate the call, as opposed to the call_function_by_hand
1095 gdb_assert (gdbarch_return_value (current_gdbarch
, value_type
, NULL
, NULL
, NULL
)
1096 == RETURN_VALUE_STRUCT_CONVENTION
);
1097 ui_out_text (uiout
, "Value returned has type: ");
1098 ui_out_field_string (uiout
, "return-type", TYPE_NAME (value_type
));
1099 ui_out_text (uiout
, ".");
1100 ui_out_text (uiout
, " Cannot determine contents\n");
1105 if (EXTRACT_STRUCT_VALUE_ADDRESS_P ())
1107 CORE_ADDR addr
= EXTRACT_STRUCT_VALUE_ADDRESS (stop_registers
);
1109 error ("Function return value unknown.");
1110 value
= value_at (value_type
, addr
, NULL
);
1114 /* It is "struct return" yet the value is being extracted,
1115 presumably from registers, using EXTRACT_RETURN_VALUE.
1116 This doesn't make sense. Unfortunately, the legacy
1117 interfaces allowed this behavior. Sigh! */
1118 value
= allocate_value (value_type
);
1119 CHECK_TYPEDEF (value_type
);
1120 /* If the function returns void, don't bother fetching the
1122 EXTRACT_RETURN_VALUE (value_type
, stop_registers
,
1123 VALUE_CONTENTS_RAW (value
));
1125 stb
= ui_out_stream_new (uiout
);
1126 ui_out_text (uiout
, "Value returned is ");
1127 ui_out_field_fmt (uiout
, "gdb-result-var", "$%d", record_latest_value (value
));
1128 ui_out_text (uiout
, " = ");
1129 value_print (value
, stb
->stream
, 0, Val_no_prettyprint
);
1130 ui_out_field_stream (uiout
, "return-value", stb
);
1131 ui_out_text (uiout
, "\n");
1135 /* Stuff that needs to be done by the finish command after the target
1136 has stopped. In asynchronous mode, we wait for the target to stop in
1137 the call to poll or select in the event loop, so it is impossible to
1138 do all the stuff as part of the finish_command function itself. The
1139 only chance we have to complete this command is in
1140 fetch_inferior_event, which is called by the event loop as soon as it
1141 detects that the target has stopped. This function is called via the
1142 cmd_continuation pointer. */
1144 finish_command_continuation (struct continuation_arg
*arg
)
1146 struct symbol
*function
;
1147 struct breakpoint
*breakpoint
;
1148 struct cleanup
*cleanups
;
1150 breakpoint
= (struct breakpoint
*) arg
->data
.pointer
;
1151 function
= (struct symbol
*) arg
->next
->data
.pointer
;
1152 cleanups
= (struct cleanup
*) arg
->next
->next
->data
.pointer
;
1154 if (bpstat_find_breakpoint (stop_bpstat
, breakpoint
) != NULL
1157 struct type
*value_type
;
1161 value_type
= TYPE_TARGET_TYPE (SYMBOL_TYPE (function
));
1163 internal_error (__FILE__
, __LINE__
,
1164 "finish_command: function has no target type");
1166 if (TYPE_CODE (value_type
) == TYPE_CODE_VOID
)
1168 do_exec_cleanups (cleanups
);
1172 funcaddr
= BLOCK_START (SYMBOL_BLOCK_VALUE (function
));
1174 struct_return
= using_struct_return (check_typedef (value_type
),
1175 BLOCK_GCC_COMPILED (SYMBOL_BLOCK_VALUE (function
)));
1177 print_return_value (struct_return
, value_type
);
1179 do_exec_cleanups (cleanups
);
1182 /* "finish": Set a temporary breakpoint at the place
1183 the selected frame will return to, then continue. */
1186 finish_command (char *arg
, int from_tty
)
1188 struct symtab_and_line sal
;
1189 struct frame_info
*frame
;
1190 struct symbol
*function
;
1191 struct breakpoint
*breakpoint
;
1192 struct cleanup
*old_chain
;
1193 struct continuation_arg
*arg1
, *arg2
, *arg3
;
1197 /* Find out whether we must run in the background. */
1199 async_exec
= strip_bg_char (&arg
);
1201 /* If we must run in the background, but the target can't do it,
1203 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
1204 error ("Asynchronous execution not supported on this target.");
1206 /* If we are not asked to run in the bg, then prepare to run in the
1207 foreground, synchronously. */
1208 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
1210 /* Simulate synchronous execution */
1211 async_disable_stdin ();
1215 error ("The \"finish\" command does not take any arguments.");
1216 if (!target_has_execution
)
1217 error ("The program is not running.");
1218 if (deprecated_selected_frame
== NULL
)
1219 error ("No selected frame.");
1221 frame
= get_prev_frame (deprecated_selected_frame
);
1223 error ("\"finish\" not meaningful in the outermost frame.");
1225 clear_proceed_status ();
1227 sal
= find_pc_line (get_frame_pc (frame
), 0);
1228 sal
.pc
= get_frame_pc (frame
);
1230 breakpoint
= set_momentary_breakpoint (sal
, get_frame_id (frame
), bp_finish
);
1232 if (!event_loop_p
|| !target_can_async_p ())
1233 old_chain
= make_cleanup_delete_breakpoint (breakpoint
);
1235 old_chain
= make_exec_cleanup_delete_breakpoint (breakpoint
);
1237 /* Find the function we will return from. */
1239 function
= find_pc_function (get_frame_pc (deprecated_selected_frame
));
1241 /* Print info on the selected frame, including level number
1245 printf_filtered ("Run till exit from ");
1246 print_stack_frame (deprecated_selected_frame
,
1247 frame_relative_level (deprecated_selected_frame
), 0);
1250 /* If running asynchronously and the target support asynchronous
1251 execution, set things up for the rest of the finish command to be
1252 completed later on, when gdb has detected that the target has
1253 stopped, in fetch_inferior_event. */
1254 if (event_loop_p
&& target_can_async_p ())
1257 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
1259 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
1261 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
1265 arg1
->data
.pointer
= breakpoint
;
1266 arg2
->data
.pointer
= function
;
1267 arg3
->data
.pointer
= old_chain
;
1268 add_continuation (finish_command_continuation
, arg1
);
1271 proceed_to_finish
= 1; /* We want stop_registers, please... */
1272 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
1274 /* Do this only if not running asynchronously or if the target
1275 cannot do async execution. Otherwise, complete this command when
1276 the target actually stops, in fetch_inferior_event. */
1277 if (!event_loop_p
|| !target_can_async_p ())
1280 /* Did we stop at our breakpoint? */
1281 if (bpstat_find_breakpoint (stop_bpstat
, breakpoint
) != NULL
1284 struct type
*value_type
;
1288 value_type
= TYPE_TARGET_TYPE (SYMBOL_TYPE (function
));
1290 internal_error (__FILE__
, __LINE__
,
1291 "finish_command: function has no target type");
1293 /* FIXME: Shouldn't we do the cleanups before returning? */
1294 if (TYPE_CODE (value_type
) == TYPE_CODE_VOID
)
1297 funcaddr
= BLOCK_START (SYMBOL_BLOCK_VALUE (function
));
1300 using_struct_return (check_typedef (value_type
),
1301 BLOCK_GCC_COMPILED (SYMBOL_BLOCK_VALUE (function
)));
1303 print_return_value (struct_return
, value_type
);
1305 do_cleanups (old_chain
);
1310 program_info (char *args
, int from_tty
)
1312 bpstat bs
= stop_bpstat
;
1313 int num
= bpstat_num (&bs
);
1315 if (!target_has_execution
)
1317 printf_filtered ("The program being debugged is not being run.\n");
1321 target_files_info ();
1322 printf_filtered ("Program stopped at %s.\n",
1323 local_hex_string ((unsigned long) stop_pc
));
1325 printf_filtered ("It stopped after being stepped.\n");
1328 /* There may be several breakpoints in the same place, so this
1329 isn't as strange as it seems. */
1334 printf_filtered ("It stopped at a breakpoint that has ");
1335 printf_filtered ("since been deleted.\n");
1338 printf_filtered ("It stopped at breakpoint %d.\n", num
);
1339 num
= bpstat_num (&bs
);
1342 else if (stop_signal
!= TARGET_SIGNAL_0
)
1344 printf_filtered ("It stopped with signal %s, %s.\n",
1345 target_signal_to_name (stop_signal
),
1346 target_signal_to_string (stop_signal
));
1351 printf_filtered ("Type \"info stack\" or \"info registers\" ");
1352 printf_filtered ("for more information.\n");
1357 environment_info (char *var
, int from_tty
)
1361 char *val
= get_in_environ (inferior_environ
, var
);
1364 puts_filtered (var
);
1365 puts_filtered (" = ");
1366 puts_filtered (val
);
1367 puts_filtered ("\n");
1371 puts_filtered ("Environment variable \"");
1372 puts_filtered (var
);
1373 puts_filtered ("\" not defined.\n");
1378 char **vector
= environ_vector (inferior_environ
);
1381 puts_filtered (*vector
++);
1382 puts_filtered ("\n");
1388 set_environment_command (char *arg
, int from_tty
)
1390 char *p
, *val
, *var
;
1394 error_no_arg ("environment variable and value");
1396 /* Find seperation between variable name and value */
1397 p
= (char *) strchr (arg
, '=');
1398 val
= (char *) strchr (arg
, ' ');
1400 if (p
!= 0 && val
!= 0)
1402 /* We have both a space and an equals. If the space is before the
1403 equals, walk forward over the spaces til we see a nonspace
1404 (possibly the equals). */
1409 /* Now if the = is after the char following the spaces,
1410 take the char following the spaces. */
1414 else if (val
!= 0 && p
== 0)
1418 error_no_arg ("environment variable to set");
1420 if (p
== 0 || p
[1] == 0)
1424 p
= arg
+ strlen (arg
); /* So that savestring below will work */
1428 /* Not setting variable value to null */
1430 while (*val
== ' ' || *val
== '\t')
1434 while (p
!= arg
&& (p
[-1] == ' ' || p
[-1] == '\t'))
1437 var
= savestring (arg
, p
- arg
);
1440 printf_filtered ("Setting environment variable ");
1441 printf_filtered ("\"%s\" to null value.\n", var
);
1442 set_in_environ (inferior_environ
, var
, "");
1445 set_in_environ (inferior_environ
, var
, val
);
1450 unset_environment_command (char *var
, int from_tty
)
1454 /* If there is no argument, delete all environment variables.
1455 Ask for confirmation if reading from the terminal. */
1456 if (!from_tty
|| query ("Delete all environment variables? "))
1458 free_environ (inferior_environ
);
1459 inferior_environ
= make_environ ();
1463 unset_in_environ (inferior_environ
, var
);
1466 /* Handle the execution path (PATH variable) */
1468 static const char path_var_name
[] = "PATH";
1471 path_info (char *args
, int from_tty
)
1473 puts_filtered ("Executable and object file path: ");
1474 puts_filtered (get_in_environ (inferior_environ
, path_var_name
));
1475 puts_filtered ("\n");
1478 /* Add zero or more directories to the front of the execution path. */
1481 path_command (char *dirname
, int from_tty
)
1486 env
= get_in_environ (inferior_environ
, path_var_name
);
1487 /* Can be null if path is not set */
1490 exec_path
= xstrdup (env
);
1491 mod_path (dirname
, &exec_path
);
1492 set_in_environ (inferior_environ
, path_var_name
, exec_path
);
1495 path_info ((char *) NULL
, from_tty
);
1499 /* Print out the machine register regnum. If regnum is -1, print all
1500 registers (print_all == 1) or all non-float and non-vector
1501 registers (print_all == 0).
1503 For most machines, having all_registers_info() print the
1504 register(s) one per line is good enough. If a different format is
1505 required, (eg, for MIPS or Pyramid 90x, which both have lots of
1506 regs), or there is an existing convention for showing all the
1507 registers, define the architecture method PRINT_REGISTERS_INFO to
1508 provide that format. */
1511 default_print_registers_info (struct gdbarch
*gdbarch
,
1512 struct ui_file
*file
,
1513 struct frame_info
*frame
,
1514 int regnum
, int print_all
)
1517 const int numregs
= NUM_REGS
+ NUM_PSEUDO_REGS
;
1518 char raw_buffer
[MAX_REGISTER_SIZE
];
1519 char virtual_buffer
[MAX_REGISTER_SIZE
];
1521 if (DEPRECATED_DO_REGISTERS_INFO_P ())
1523 DEPRECATED_DO_REGISTERS_INFO (regnum
, print_all
);
1527 for (i
= 0; i
< numregs
; i
++)
1529 /* Decide between printing all regs, non-float / vector regs, or
1535 if (!gdbarch_register_reggroup_p (gdbarch
, i
, all_reggroup
))
1540 if (!gdbarch_register_reggroup_p (gdbarch
, i
, general_reggroup
))
1550 /* If the register name is empty, it is undefined for this
1551 processor, so don't display anything. */
1552 if (REGISTER_NAME (i
) == NULL
|| *(REGISTER_NAME (i
)) == '\0')
1555 fputs_filtered (REGISTER_NAME (i
), file
);
1556 print_spaces_filtered (15 - strlen (REGISTER_NAME (i
)), file
);
1558 /* Get the data in raw format. */
1559 if (! frame_register_read (frame
, i
, raw_buffer
))
1561 fprintf_filtered (file
, "*value not available*\n");
1565 /* FIXME: cagney/2002-08-03: This code shouldn't be necessary.
1566 The function frame_register_read() should have returned the
1567 pre-cooked register so no conversion is necessary. */
1568 /* Convert raw data to virtual format if necessary. */
1569 if (DEPRECATED_REGISTER_CONVERTIBLE (i
))
1571 DEPRECATED_REGISTER_CONVERT_TO_VIRTUAL (i
, register_type (current_gdbarch
, i
),
1572 raw_buffer
, virtual_buffer
);
1576 memcpy (virtual_buffer
, raw_buffer
,
1577 DEPRECATED_REGISTER_VIRTUAL_SIZE (i
));
1580 /* If virtual format is floating, print it that way, and in raw
1582 if (TYPE_CODE (register_type (current_gdbarch
, i
)) == TYPE_CODE_FLT
)
1586 val_print (register_type (current_gdbarch
, i
), virtual_buffer
, 0, 0,
1587 file
, 0, 1, 0, Val_pretty_default
);
1589 fprintf_filtered (file
, "\t(raw 0x");
1590 for (j
= 0; j
< DEPRECATED_REGISTER_RAW_SIZE (i
); j
++)
1593 if (TARGET_BYTE_ORDER
== BFD_ENDIAN_BIG
)
1596 idx
= DEPRECATED_REGISTER_RAW_SIZE (i
) - 1 - j
;
1597 fprintf_filtered (file
, "%02x", (unsigned char) raw_buffer
[idx
]);
1599 fprintf_filtered (file
, ")");
1603 /* Print the register in hex. */
1604 val_print (register_type (current_gdbarch
, i
), virtual_buffer
, 0, 0,
1605 file
, 'x', 1, 0, Val_pretty_default
);
1606 /* If not a vector register, print it also according to its
1608 if (TYPE_VECTOR (register_type (current_gdbarch
, i
)) == 0)
1610 fprintf_filtered (file
, "\t");
1611 val_print (register_type (current_gdbarch
, i
), virtual_buffer
, 0, 0,
1612 file
, 0, 1, 0, Val_pretty_default
);
1616 fprintf_filtered (file
, "\n");
1621 registers_info (char *addr_exp
, int fpregs
)
1623 int regnum
, numregs
;
1626 if (!target_has_registers
)
1627 error ("The program has no registers now.");
1628 if (deprecated_selected_frame
== NULL
)
1629 error ("No selected frame.");
1633 gdbarch_print_registers_info (current_gdbarch
, gdb_stdout
,
1634 deprecated_selected_frame
, -1, fpregs
);
1638 while (*addr_exp
!= '\0')
1643 /* Keep skipping leading white space. */
1644 if (isspace ((*addr_exp
)))
1650 /* Discard any leading ``$''. Check that there is something
1651 resembling a register following it. */
1652 if (addr_exp
[0] == '$')
1654 if (isspace ((*addr_exp
)) || (*addr_exp
) == '\0')
1655 error ("Missing register name");
1657 /* Find the start/end of this register name/num/group. */
1659 while ((*addr_exp
) != '\0' && !isspace ((*addr_exp
)))
1663 /* Figure out what we've found and display it. */
1665 /* A register name? */
1667 int regnum
= frame_map_name_to_regnum (deprecated_selected_frame
,
1668 start
, end
- start
);
1671 gdbarch_print_registers_info (current_gdbarch
, gdb_stdout
,
1672 deprecated_selected_frame
, regnum
, fpregs
);
1677 /* A register number? (how portable is this one?). */
1680 int regnum
= strtol (start
, &endptr
, 0);
1683 && regnum
< NUM_REGS
+ NUM_PSEUDO_REGS
)
1685 gdbarch_print_registers_info (current_gdbarch
, gdb_stdout
,
1686 deprecated_selected_frame
, regnum
, fpregs
);
1691 /* A register group? */
1693 struct reggroup
*group
;
1694 for (group
= reggroup_next (current_gdbarch
, NULL
);
1696 group
= reggroup_next (current_gdbarch
, group
))
1698 /* Don't bother with a length check. Should the user
1699 enter a short register group name, go with the first
1700 group that matches. */
1701 if (strncmp (start
, reggroup_name (group
), end
- start
) == 0)
1707 for (regnum
= 0; regnum
< NUM_REGS
+ NUM_PSEUDO_REGS
; regnum
++)
1709 if (gdbarch_register_reggroup_p (current_gdbarch
, regnum
,
1711 gdbarch_print_registers_info (current_gdbarch
,
1712 gdb_stdout
, deprecated_selected_frame
,
1719 /* Nothing matched. */
1720 error ("Invalid register `%.*s'", (int) (end
- start
), start
);
1725 all_registers_info (char *addr_exp
, int from_tty
)
1727 registers_info (addr_exp
, 1);
1731 nofp_registers_info (char *addr_exp
, int from_tty
)
1733 registers_info (addr_exp
, 0);
1737 print_vector_info (struct gdbarch
*gdbarch
, struct ui_file
*file
,
1738 struct frame_info
*frame
, const char *args
)
1740 if (!target_has_registers
)
1741 error ("The program has no registers now.");
1742 if (deprecated_selected_frame
== NULL
)
1743 error ("No selected frame.");
1745 if (gdbarch_print_vector_info_p (gdbarch
))
1746 gdbarch_print_vector_info (gdbarch
, file
, frame
, args
);
1750 int printed_something
= 0;
1752 for (regnum
= 0; regnum
< NUM_REGS
+ NUM_PSEUDO_REGS
; regnum
++)
1754 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, vector_reggroup
))
1756 printed_something
= 1;
1757 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
1760 if (!printed_something
)
1761 fprintf_filtered (file
, "No vector information\n");
1766 vector_info (char *args
, int from_tty
)
1768 print_vector_info (current_gdbarch
, gdb_stdout
, deprecated_selected_frame
, args
);
1774 * Should save/restore the tty state since it might be that the
1775 * program to be debugged was started on this tty and it wants
1776 * the tty in some state other than what we want. If it's running
1777 * on another terminal or without a terminal, then saving and
1778 * restoring the tty state is a harmless no-op.
1779 * This only needs to be done if we are attaching to a process.
1784 takes a program started up outside of gdb and ``attaches'' to it.
1785 This stops it cold in its tracks and allows us to start debugging it.
1786 and wait for the trace-trap that results from attaching. */
1789 attach_command (char *args
, int from_tty
)
1792 char *full_exec_path
= NULL
;
1794 dont_repeat (); /* Not for the faint of heart */
1796 if (target_has_execution
)
1798 if (query ("A program is being debugged already. Kill it? "))
1801 error ("Not killed.");
1804 target_attach (args
, from_tty
);
1806 /* Set up the "saved terminal modes" of the inferior
1807 based on what modes we are starting it with. */
1808 target_terminal_init ();
1810 /* Install inferior's terminal modes. */
1811 target_terminal_inferior ();
1813 /* Set up execution context to know that we should return from
1814 wait_for_inferior as soon as the target reports a stop. */
1815 init_wait_for_inferior ();
1816 clear_proceed_status ();
1818 /* No traps are generated when attaching to inferior under Mach 3
1820 #ifndef ATTACH_NO_WAIT
1821 /* Careful here. See comments in inferior.h. Basically some OSes
1822 don't ignore SIGSTOPs on continue requests anymore. We need a
1823 way for handle_inferior_event to reset the stop_signal variable
1824 after an attach, and this is what STOP_QUIETLY_NO_SIGSTOP is for. */
1825 stop_soon
= STOP_QUIETLY_NO_SIGSTOP
;
1826 wait_for_inferior ();
1827 stop_soon
= NO_STOP_QUIETLY
;
1831 * If no exec file is yet known, try to determine it from the
1834 exec_file
= (char *) get_exec_file (0);
1837 exec_file
= target_pid_to_exec_file (PIDGET (inferior_ptid
));
1840 /* It's possible we don't have a full path, but rather just a
1841 filename. Some targets, such as HP-UX, don't provide the
1844 Attempt to qualify the filename against the source path.
1845 (If that fails, we'll just fall back on the original
1846 filename. Not much more we can do...)
1848 if (!source_full_path_of (exec_file
, &full_exec_path
))
1849 full_exec_path
= savestring (exec_file
, strlen (exec_file
));
1851 exec_file_attach (full_exec_path
, from_tty
);
1852 symbol_file_add_main (full_exec_path
, from_tty
);
1857 /* Add shared library symbols from the newly attached process, if any. */
1858 SOLIB_ADD ((char *) 0, from_tty
, ¤t_target
, auto_solib_add
);
1859 re_enable_breakpoints_in_shlibs ();
1862 /* Take any necessary post-attaching actions for this platform.
1864 target_post_attach (PIDGET (inferior_ptid
));
1874 * takes a program previously attached to and detaches it.
1875 * The program resumes execution and will no longer stop
1876 * on signals, etc. We better not have left any breakpoints
1877 * in the program or it'll die when it hits one. For this
1878 * to work, it may be necessary for the process to have been
1879 * previously attached. It *might* work if the program was
1880 * started via the normal ptrace (PTRACE_TRACEME).
1884 detach_command (char *args
, int from_tty
)
1886 dont_repeat (); /* Not for the faint of heart */
1887 target_detach (args
, from_tty
);
1888 #if defined(SOLIB_RESTART)
1895 /* Disconnect from the current target without resuming it (leaving it
1896 waiting for a debugger).
1898 We'd better not have left any breakpoints in the program or the
1899 next debugger will get confused. Currently only supported for some
1900 remote targets, since the normal attach mechanisms don't work on
1901 stopped processes on some native platforms (e.g. GNU/Linux). */
1904 disconnect_command (char *args
, int from_tty
)
1906 dont_repeat (); /* Not for the faint of heart */
1907 target_disconnect (args
, from_tty
);
1908 #if defined(SOLIB_RESTART)
1915 /* Stop the execution of the target while running in async mode, in
1918 interrupt_target_command (char *args
, int from_tty
)
1920 if (event_loop_p
&& target_can_async_p ())
1922 dont_repeat (); /* Not for the faint of heart */
1928 print_float_info (struct gdbarch
*gdbarch
, struct ui_file
*file
,
1929 struct frame_info
*frame
, const char *args
)
1931 if (!target_has_registers
)
1932 error ("The program has no registers now.");
1933 if (deprecated_selected_frame
== NULL
)
1934 error ("No selected frame.");
1936 if (gdbarch_print_float_info_p (gdbarch
))
1937 gdbarch_print_float_info (gdbarch
, file
, frame
, args
);
1941 int printed_something
= 0;
1943 for (regnum
= 0; regnum
< NUM_REGS
+ NUM_PSEUDO_REGS
; regnum
++)
1945 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, float_reggroup
))
1947 printed_something
= 1;
1948 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
1951 if (!printed_something
)
1952 fprintf_filtered (file
, "\
1953 No floating-point info available for this processor.\n");
1958 float_info (char *args
, int from_tty
)
1960 print_float_info (current_gdbarch
, gdb_stdout
, deprecated_selected_frame
, args
);
1964 unset_command (char *args
, int from_tty
)
1966 printf_filtered ("\"unset\" must be followed by the name of ");
1967 printf_filtered ("an unset subcommand.\n");
1968 help_list (unsetlist
, "unset ", -1, gdb_stdout
);
1972 _initialize_infcmd (void)
1974 struct cmd_list_element
*c
;
1976 c
= add_com ("tty", class_run
, tty_command
,
1977 "Set terminal for future runs of program being debugged.");
1978 set_cmd_completer (c
, filename_completer
);
1980 c
= add_set_cmd ("args", class_run
, var_string_noescape
,
1981 (char *) &inferior_args
,
1982 "Set argument list to give program being debugged when it is started.\n\
1983 Follow this command with any number of args, to be passed to the program.",
1985 set_cmd_completer (c
, filename_completer
);
1986 set_cmd_sfunc (c
, notice_args_set
);
1987 c
= add_show_from_set (c
, &showlist
);
1988 set_cmd_sfunc (c
, notice_args_read
);
1991 ("environment", no_class
, environment_info
,
1992 "The environment to give the program, or one variable's value.\n\
1993 With an argument VAR, prints the value of environment variable VAR to\n\
1994 give the program being debugged. With no arguments, prints the entire\n\
1995 environment to be given to the program.", &showlist
);
1996 set_cmd_completer (c
, noop_completer
);
1998 add_prefix_cmd ("unset", no_class
, unset_command
,
1999 "Complement to certain \"set\" commands.",
2000 &unsetlist
, "unset ", 0, &cmdlist
);
2002 c
= add_cmd ("environment", class_run
, unset_environment_command
,
2003 "Cancel environment variable VAR for the program.\n\
2004 This does not affect the program until the next \"run\" command.",
2006 set_cmd_completer (c
, noop_completer
);
2008 c
= add_cmd ("environment", class_run
, set_environment_command
,
2009 "Set environment variable value to give the program.\n\
2010 Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\
2011 VALUES of environment variables are uninterpreted strings.\n\
2012 This does not affect the program until the next \"run\" command.",
2014 set_cmd_completer (c
, noop_completer
);
2016 c
= add_com ("path", class_files
, path_command
,
2017 "Add directory DIR(s) to beginning of search path for object files.\n\
2018 $cwd in the path means the current working directory.\n\
2019 This path is equivalent to the $PATH shell variable. It is a list of\n\
2020 directories, separated by colons. These directories are searched to find\n\
2021 fully linked executable files and separately compiled object files as needed.");
2022 set_cmd_completer (c
, filename_completer
);
2024 c
= add_cmd ("paths", no_class
, path_info
,
2025 "Current search path for finding object files.\n\
2026 $cwd in the path means the current working directory.\n\
2027 This path is equivalent to the $PATH shell variable. It is a list of\n\
2028 directories, separated by colons. These directories are searched to find\n\
2029 fully linked executable files and separately compiled object files as needed.",
2031 set_cmd_completer (c
, noop_completer
);
2033 add_com ("attach", class_run
, attach_command
,
2034 "Attach to a process or file outside of GDB.\n\
2035 This command attaches to another target, of the same type as your last\n\
2036 \"target\" command (\"info files\" will show your target stack).\n\
2037 The command may take as argument a process id or a device file.\n\
2038 For a process id, you must have permission to send the process a signal,\n\
2039 and it must have the same effective uid as the debugger.\n\
2040 When using \"attach\" with a process id, the debugger finds the\n\
2041 program running in the process, looking first in the current working\n\
2042 directory, or (if not found there) using the source file search path\n\
2043 (see the \"directory\" command). You can also use the \"file\" command\n\
2044 to specify the program, and to load its symbol table.");
2046 add_com ("detach", class_run
, detach_command
,
2047 "Detach a process or file previously attached.\n\
2048 If a process, it is no longer traced, and it continues its execution. If\n\
2049 you were debugging a file, the file is closed and gdb no longer accesses it.");
2051 add_com ("disconnect", class_run
, disconnect_command
,
2052 "Disconnect from a target.\n\
2053 The target will wait for another debugger to connect. Not available for\n\
2056 add_com ("signal", class_run
, signal_command
,
2057 "Continue program giving it signal specified by the argument.\n\
2058 An argument of \"0\" means continue program without giving it a signal.");
2060 add_com ("stepi", class_run
, stepi_command
,
2061 "Step one instruction exactly.\n\
2062 Argument N means do this N times (or till program stops for another reason).");
2063 add_com_alias ("si", "stepi", class_alias
, 0);
2065 add_com ("nexti", class_run
, nexti_command
,
2066 "Step one instruction, but proceed through subroutine calls.\n\
2067 Argument N means do this N times (or till program stops for another reason).");
2068 add_com_alias ("ni", "nexti", class_alias
, 0);
2070 add_com ("finish", class_run
, finish_command
,
2071 "Execute until selected stack frame returns.\n\
2072 Upon return, the value returned is printed and put in the value history.");
2074 add_com ("next", class_run
, next_command
,
2075 "Step program, proceeding through subroutine calls.\n\
2076 Like the \"step\" command as long as subroutine calls do not happen;\n\
2077 when they do, the call is treated as one instruction.\n\
2078 Argument N means do this N times (or till program stops for another reason).");
2079 add_com_alias ("n", "next", class_run
, 1);
2081 add_com_alias ("S", "next", class_run
, 1);
2083 add_com ("step", class_run
, step_command
,
2084 "Step program until it reaches a different source line.\n\
2085 Argument N means do this N times (or till program stops for another reason).");
2086 add_com_alias ("s", "step", class_run
, 1);
2088 c
= add_com ("until", class_run
, until_command
,
2089 "Execute until the program reaches a source line greater than the current\n\
2090 or a specified location (same args as break command) within the current frame.");
2091 set_cmd_completer (c
, location_completer
);
2092 add_com_alias ("u", "until", class_run
, 1);
2094 c
= add_com ("advance", class_run
, advance_command
,
2095 "Continue the program up to the given location (same form as args for break command).\n\
2096 Execution will also stop upon exit from the current stack frame.");
2097 set_cmd_completer (c
, location_completer
);
2099 c
= add_com ("jump", class_run
, jump_command
,
2100 "Continue program being debugged at specified line or address.\n\
2101 Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\
2102 for an address to start at.");
2103 set_cmd_completer (c
, location_completer
);
2107 c
= add_com ("go", class_run
, go_command
,
2108 "Usage: go <location>\n\
2109 Continue program being debugged, stopping at specified line or \n\
2111 Give as argument either LINENUM or *ADDR, where ADDR is an \n\
2112 expression for an address to start at.\n\
2113 This command is a combination of tbreak and jump.");
2114 set_cmd_completer (c
, location_completer
);
2118 add_com_alias ("g", "go", class_run
, 1);
2120 add_com ("continue", class_run
, continue_command
,
2121 "Continue program being debugged, after signal or breakpoint.\n\
2122 If proceeding from breakpoint, a number N may be used as an argument,\n\
2123 which means to set the ignore count of that breakpoint to N - 1 (so that\n\
2124 the breakpoint won't break until the Nth time it is reached).");
2125 add_com_alias ("c", "cont", class_run
, 1);
2126 add_com_alias ("fg", "cont", class_run
, 1);
2128 c
= add_com ("run", class_run
, run_command
,
2129 "Start debugged program. You may specify arguments to give it.\n\
2130 Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\
2131 Input and output redirection with \">\", \"<\", or \">>\" are also allowed.\n\n\
2132 With no arguments, uses arguments last specified (with \"run\" or \"set args\").\n\
2133 To cancel previous arguments and run with no arguments,\n\
2134 use \"set args\" without arguments.");
2135 set_cmd_completer (c
, filename_completer
);
2136 add_com_alias ("r", "run", class_run
, 1);
2138 add_com ("R", class_run
, run_no_args_command
,
2139 "Start debugged program with no arguments.");
2141 add_com ("interrupt", class_run
, interrupt_target_command
,
2142 "Interrupt the execution of the debugged program.");
2144 add_info ("registers", nofp_registers_info
,
2145 "List of integer registers and their contents, for selected stack frame.\n\
2146 Register name as argument means describe only that register.");
2147 add_info_alias ("r", "registers", 1);
2150 add_com ("lr", class_info
, nofp_registers_info
,
2151 "List of integer registers and their contents, for selected stack frame.\n\
2152 Register name as argument means describe only that register.");
2153 add_info ("all-registers", all_registers_info
,
2154 "List of all registers and their contents, for selected stack frame.\n\
2155 Register name as argument means describe only that register.");
2157 add_info ("program", program_info
,
2158 "Execution status of the program.");
2160 add_info ("float", float_info
,
2161 "Print the status of the floating point unit\n");
2163 add_info ("vector", vector_info
,
2164 "Print the status of the vector unit\n");
2166 inferior_environ
= make_environ ();
2167 init_environ (inferior_environ
);