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
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 /* Functions exported for general use, in inferior.h: */
49 void all_registers_info (char *, int);
51 void registers_info (char *, int);
53 void nexti_command (char *, int);
55 void stepi_command (char *, int);
57 void continue_command (char *, int);
59 void interrupt_target_command (char *args
, int from_tty
);
61 /* Local functions: */
63 static void nofp_registers_info (char *, int);
65 static void print_return_value (int struct_return
, struct type
*value_type
);
67 static void finish_command_continuation (struct continuation_arg
*);
69 static void until_next_command (int);
71 static void until_command (char *, int);
73 static void path_info (char *, int);
75 static void path_command (char *, int);
77 static void unset_command (char *, int);
79 static void float_info (char *, int);
81 static void detach_command (char *, int);
83 static void unset_environment_command (char *, int);
85 static void set_environment_command (char *, int);
87 static void environment_info (char *, int);
89 static void program_info (char *, int);
91 static void finish_command (char *, int);
93 static void signal_command (char *, int);
95 static void jump_command (char *, int);
97 static void step_1 (int, int, char *);
98 static void step_once (int skip_subroutines
, int single_inst
, int count
);
99 static void step_1_continuation (struct continuation_arg
*arg
);
101 static void next_command (char *, int);
103 static void step_command (char *, int);
105 static void run_command (char *, int);
107 static void run_no_args_command (char *args
, int from_tty
);
109 static void go_command (char *line_no
, int from_tty
);
111 static int strip_bg_char (char **);
113 void _initialize_infcmd (void);
115 #define GO_USAGE "Usage: go <location>\n"
117 static void breakpoint_auto_delete_contents (PTR
);
119 #define ERROR_NO_INFERIOR \
120 if (!target_has_execution) error ("The program is not being run.");
122 /* String containing arguments to give to the program, separated by spaces.
123 Empty string (pointer to '\0') means no args. */
125 static char *inferior_args
;
127 /* The inferior arguments as a vector. If INFERIOR_ARGC is nonzero,
128 then we must compute INFERIOR_ARGS from this (via the target). */
130 static int inferior_argc
;
131 static char **inferior_argv
;
133 /* File name for default use for standard in/out in the inferior. */
135 char *inferior_io_terminal
;
137 /* Pid of our debugged inferior, or 0 if no inferior now.
138 Since various parts of infrun.c test this to see whether there is a program
139 being debugged it should be nonzero (currently 3 is used) for remote
142 ptid_t inferior_ptid
;
144 /* Last signal that the inferior received (why it stopped). */
146 enum target_signal stop_signal
;
148 /* Address at which inferior stopped. */
152 /* Chain containing status of breakpoint(s) that we have stopped at. */
156 /* Flag indicating that a command has proceeded the inferior past the
157 current breakpoint. */
159 int breakpoint_proceeded
;
161 /* Nonzero if stopped due to a step command. */
165 /* Nonzero if stopped due to completion of a stack dummy routine. */
167 int stop_stack_dummy
;
169 /* Nonzero if stopped due to a random (unexpected) signal in inferior
172 int stopped_by_random_signal
;
174 /* Range to single step within.
175 If this is nonzero, respond to a single-step signal
176 by continuing to step if the pc is in this range. */
178 CORE_ADDR step_range_start
; /* Inclusive */
179 CORE_ADDR step_range_end
; /* Exclusive */
181 /* Stack frame address as of when stepping command was issued.
182 This is how we know when we step into a subroutine call,
183 and how to set the frame for the breakpoint used to step out. */
185 CORE_ADDR step_frame_address
;
187 /* Our notion of the current stack pointer. */
191 enum step_over_calls_kind step_over_calls
;
193 /* If stepping, nonzero means step count is > 1
194 so don't print frame next time inferior stops
195 if it stops due to stepping. */
199 /* Environment to use for running inferior,
200 in format described in environ.h. */
202 struct environ
*inferior_environ
;
204 /* Accessor routines. */
207 get_inferior_args (void)
209 if (inferior_argc
!= 0)
213 n
= gdbarch_construct_inferior_arguments (current_gdbarch
,
214 inferior_argc
, inferior_argv
);
215 old
= set_inferior_args (n
);
219 if (inferior_args
== NULL
)
220 inferior_args
= xstrdup ("");
222 return inferior_args
;
226 set_inferior_args (char *newargs
)
228 char *saved_args
= inferior_args
;
230 inferior_args
= newargs
;
238 set_inferior_args_vector (int argc
, char **argv
)
240 inferior_argc
= argc
;
241 inferior_argv
= argv
;
244 /* Notice when `set args' is run. */
246 notice_args_set (char *args
, int from_tty
, struct cmd_list_element
*c
)
252 /* Notice when `show args' is run. */
254 notice_args_read (char *args
, int from_tty
, struct cmd_list_element
*c
)
256 /* Might compute the value. */
257 get_inferior_args ();
261 /* Compute command-line string given argument vector. This does the
262 same shell processing as fork_inferior. */
265 construct_inferior_arguments (struct gdbarch
*gdbarch
, int argc
, char **argv
)
269 if (STARTUP_WITH_SHELL
)
271 /* This holds all the characters considered special to the
272 typical Unix shells. We include `^' because the SunOS
273 /bin/sh treats it as a synonym for `|'. */
274 char *special
= "\"!#$&*()\\|[]{}<>?'\"`~^; \t\n";
279 /* We over-compute the size. It shouldn't matter. */
280 for (i
= 0; i
< argc
; ++i
)
281 length
+= 2 * strlen (argv
[i
]) + 1 + 2 * (argv
[i
][0] == '\0');
283 result
= (char *) xmalloc (length
);
286 for (i
= 0; i
< argc
; ++i
)
291 /* Need to handle empty arguments specially. */
292 if (argv
[i
][0] == '\0')
299 for (cp
= argv
[i
]; *cp
; ++cp
)
301 if (strchr (special
, *cp
) != NULL
)
311 /* In this case we can't handle arguments that contain spaces,
312 tabs, or newlines -- see breakup_args(). */
316 for (i
= 0; i
< argc
; ++i
)
318 char *cp
= strchr (argv
[i
], ' ');
320 cp
= strchr (argv
[i
], '\t');
322 cp
= strchr (argv
[i
], '\n');
324 error ("can't handle command-line argument containing whitespace");
325 length
+= strlen (argv
[i
]) + 1;
328 result
= (char *) xmalloc (length
);
330 for (i
= 0; i
< argc
; ++i
)
333 strcat (result
, " ");
334 strcat (result
, argv
[i
]);
342 /* This function detects whether or not a '&' character (indicating
343 background execution) has been added as *the last* of the arguments ARGS
344 of a command. If it has, it removes it and returns 1. Otherwise it
345 does nothing and returns 0. */
347 strip_bg_char (char **args
)
351 p
= strchr (*args
, '&');
355 if (p
== (*args
+ strlen (*args
) - 1))
357 if (strlen (*args
) > 1)
361 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. */
547 step_command (char *count_string
, int from_tty
)
549 step_1 (0, 0, count_string
);
552 /* Likewise, but skip over subroutine calls as if single instructions. */
556 next_command (char *count_string
, int from_tty
)
558 step_1 (1, 0, count_string
);
561 /* Likewise, but step only one instruction. */
565 stepi_command (char *count_string
, int from_tty
)
567 step_1 (0, 1, count_string
);
572 nexti_command (char *count_string
, int from_tty
)
574 step_1 (1, 1, count_string
);
578 disable_longjmp_breakpoint_cleanup (void *ignore
)
580 disable_longjmp_breakpoint ();
584 step_1 (int skip_subroutines
, int single_inst
, char *count_string
)
586 register int count
= 1;
587 struct frame_info
*frame
;
588 struct cleanup
*cleanups
= 0;
594 async_exec
= strip_bg_char (&count_string
);
596 /* If we get a request for running in the bg but the target
597 doesn't support it, error out. */
598 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
599 error ("Asynchronous execution not supported on this target.");
601 /* If we don't get a request of running in the bg, then we need
602 to simulate synchronous (fg) execution. */
603 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
605 /* Simulate synchronous execution */
606 async_disable_stdin ();
609 count
= count_string
? parse_and_eval_long (count_string
) : 1;
611 if (!single_inst
|| skip_subroutines
) /* leave si command alone */
613 enable_longjmp_breakpoint ();
614 if (!event_loop_p
|| !target_can_async_p ())
615 cleanups
= make_cleanup (disable_longjmp_breakpoint_cleanup
, 0 /*ignore*/);
617 make_exec_cleanup (disable_longjmp_breakpoint_cleanup
, 0 /*ignore*/);
620 /* In synchronous case, all is well, just use the regular for loop. */
621 if (!event_loop_p
|| !target_can_async_p ())
623 for (; count
> 0; count
--)
625 clear_proceed_status ();
627 frame
= get_current_frame ();
628 if (!frame
) /* Avoid coredump here. Why tho? */
629 error ("No current frame");
630 step_frame_address
= get_frame_base (frame
);
631 step_sp
= read_sp ();
635 find_pc_line_pc_range (stop_pc
, &step_range_start
, &step_range_end
);
636 if (step_range_end
== 0)
639 if (find_pc_partial_function (stop_pc
, &name
, &step_range_start
,
640 &step_range_end
) == 0)
641 error ("Cannot find bounds of current function");
643 target_terminal_ours ();
645 Single stepping until exit from function %s, \n\
646 which has no line number information.\n", name
);
651 /* Say we are stepping, but stop after one insn whatever it does. */
652 step_range_start
= step_range_end
= 1;
653 if (!skip_subroutines
)
655 Don't step over function calls, not even to functions lacking
657 step_over_calls
= STEP_OVER_NONE
;
660 if (skip_subroutines
)
661 step_over_calls
= STEP_OVER_ALL
;
663 step_multi
= (count
> 1);
664 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
669 /* FIXME: On nexti, this may have already been done (when we hit the
670 step resume break, I think). Probably this should be moved to
671 wait_for_inferior (near the top). */
672 #if defined (SHIFT_INST_REGS)
677 if (!single_inst
|| skip_subroutines
)
678 do_cleanups (cleanups
);
681 /* In case of asynchronous target things get complicated, do only
682 one step for now, before returning control to the event loop. Let
683 the continuation figure out how many other steps we need to do,
684 and handle them one at the time, through step_once(). */
687 if (event_loop_p
&& target_can_async_p ())
688 step_once (skip_subroutines
, single_inst
, count
);
692 /* Called after we are done with one step operation, to check whether
693 we need to step again, before we print the prompt and return control
694 to the user. If count is > 1, we will need to do one more call to
695 proceed(), via step_once(). Basically it is like step_once and
696 step_1_continuation are co-recursive. */
698 step_1_continuation (struct continuation_arg
*arg
)
701 int skip_subroutines
;
704 skip_subroutines
= arg
->data
.integer
;
705 single_inst
= arg
->next
->data
.integer
;
706 count
= arg
->next
->next
->data
.integer
;
710 /* FIXME: On nexti, this may have already been done (when we hit the
711 step resume break, I think). Probably this should be moved to
712 wait_for_inferior (near the top). */
713 #if defined (SHIFT_INST_REGS)
716 step_once (skip_subroutines
, single_inst
, count
- 1);
719 if (!single_inst
|| skip_subroutines
)
720 do_exec_cleanups (ALL_CLEANUPS
);
723 /* Do just one step operation. If count >1 we will have to set up a
724 continuation to be done after the target stops (after this one
725 step). This is useful to implement the 'step n' kind of commands, in
726 case of asynchronous targets. We had to split step_1 into two parts,
727 one to be done before proceed() and one afterwards. This function is
728 called in case of step n with n>1, after the first step operation has
731 step_once (int skip_subroutines
, int single_inst
, int count
)
733 struct continuation_arg
*arg1
;
734 struct continuation_arg
*arg2
;
735 struct continuation_arg
*arg3
;
736 struct frame_info
*frame
;
740 clear_proceed_status ();
742 frame
= get_current_frame ();
743 if (!frame
) /* Avoid coredump here. Why tho? */
744 error ("No current frame");
745 step_frame_address
= get_frame_base (frame
);
746 step_sp
= read_sp ();
750 find_pc_line_pc_range (stop_pc
, &step_range_start
, &step_range_end
);
752 /* If we have no line info, switch to stepi mode. */
753 if (step_range_end
== 0 && step_stop_if_no_debug
)
755 step_range_start
= step_range_end
= 1;
757 else if (step_range_end
== 0)
760 if (find_pc_partial_function (stop_pc
, &name
, &step_range_start
,
761 &step_range_end
) == 0)
762 error ("Cannot find bounds of current function");
764 target_terminal_ours ();
766 Single stepping until exit from function %s, \n\
767 which has no line number information.\n", name
);
772 /* Say we are stepping, but stop after one insn whatever it does. */
773 step_range_start
= step_range_end
= 1;
774 if (!skip_subroutines
)
776 Don't step over function calls, not even to functions lacking
778 step_over_calls
= STEP_OVER_NONE
;
781 if (skip_subroutines
)
782 step_over_calls
= STEP_OVER_ALL
;
784 step_multi
= (count
> 1);
786 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
788 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
790 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
792 arg1
->data
.integer
= skip_subroutines
;
794 arg2
->data
.integer
= single_inst
;
796 arg3
->data
.integer
= count
;
797 add_intermediate_continuation (step_1_continuation
, arg1
);
798 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
803 /* Continue program at specified address. */
806 jump_command (char *arg
, int from_tty
)
808 register CORE_ADDR addr
;
809 struct symtabs_and_lines sals
;
810 struct symtab_and_line sal
;
817 /* Find out whether we must run in the background. */
819 async_exec
= strip_bg_char (&arg
);
821 /* If we must run in the background, but the target can't do it,
823 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
824 error ("Asynchronous execution not supported on this target.");
826 /* If we are not asked to run in the bg, then prepare to run in the
827 foreground, synchronously. */
828 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
830 /* Simulate synchronous execution */
831 async_disable_stdin ();
835 error_no_arg ("starting address");
837 sals
= decode_line_spec_1 (arg
, 1);
840 error ("Unreasonable jump request");
846 if (sal
.symtab
== 0 && sal
.pc
== 0)
847 error ("No source file has been specified.");
849 resolve_sal_pc (&sal
); /* May error out */
851 /* See if we are trying to jump to another function. */
852 fn
= get_frame_function (get_current_frame ());
853 sfn
= find_pc_function (sal
.pc
);
854 if (fn
!= NULL
&& sfn
!= fn
)
856 if (!query ("Line %d is not in `%s'. Jump anyway? ", sal
.line
,
857 SYMBOL_SOURCE_NAME (fn
)))
859 error ("Not confirmed.");
866 fixup_symbol_section (sfn
, 0);
867 if (section_is_overlay (SYMBOL_BFD_SECTION (sfn
)) &&
868 !section_is_mapped (SYMBOL_BFD_SECTION (sfn
)))
870 if (!query ("WARNING!!! Destination is in unmapped overlay! Jump anyway? "))
872 error ("Not confirmed.");
882 printf_filtered ("Continuing at ");
883 print_address_numeric (addr
, 1, gdb_stdout
);
884 printf_filtered (".\n");
887 clear_proceed_status ();
888 proceed (addr
, TARGET_SIGNAL_0
, 0);
892 /* Go to line or address in current procedure */
894 go_command (char *line_no
, int from_tty
)
896 if (line_no
== (char *) NULL
|| !*line_no
)
897 printf_filtered (GO_USAGE
);
900 tbreak_command (line_no
, from_tty
);
901 jump_command (line_no
, from_tty
);
906 /* Continue program giving it specified signal. */
909 signal_command (char *signum_exp
, int from_tty
)
911 enum target_signal oursig
;
913 dont_repeat (); /* Too dangerous. */
917 error_no_arg ("signal number");
919 /* It would be even slicker to make signal names be valid expressions,
920 (the type could be "enum $signal" or some such), then the user could
921 assign them to convenience variables. */
922 oursig
= target_signal_from_name (signum_exp
);
924 if (oursig
== TARGET_SIGNAL_UNKNOWN
)
926 /* No, try numeric. */
927 int num
= parse_and_eval_long (signum_exp
);
930 oursig
= TARGET_SIGNAL_0
;
932 oursig
= target_signal_from_command (num
);
937 if (oursig
== TARGET_SIGNAL_0
)
938 printf_filtered ("Continuing with no signal.\n");
940 printf_filtered ("Continuing with signal %s.\n",
941 target_signal_to_name (oursig
));
944 clear_proceed_status ();
945 /* "signal 0" should not get stuck if we are stopped at a breakpoint.
946 FIXME: Neither should "signal foo" but when I tried passing
947 (CORE_ADDR)-1 unconditionally I got a testsuite failure which I haven't
948 tried to track down yet. */
949 proceed (oursig
== TARGET_SIGNAL_0
? (CORE_ADDR
) -1 : stop_pc
, oursig
, 0);
952 /* Call breakpoint_auto_delete on the current contents of the bpstat
953 pointed to by arg (which is really a bpstat *). */
956 breakpoint_auto_delete_contents (PTR arg
)
958 breakpoint_auto_delete (*(bpstat
*) arg
);
962 /* Execute a "stack dummy", a piece of code stored in the stack
963 by the debugger to be executed in the inferior.
965 To call: first, do PUSH_DUMMY_FRAME.
966 Then push the contents of the dummy. It should end with a breakpoint insn.
967 Then call here, passing address at which to start the dummy.
969 The contents of all registers are saved before the dummy frame is popped
970 and copied into the buffer BUFFER.
972 The dummy's frame is automatically popped whenever that break is hit.
973 If that is the first time the program stops, run_stack_dummy
974 returns to its caller with that frame already gone and returns 0.
976 Otherwise, run_stack-dummy returns a non-zero value.
977 If the called function receives a random signal, we do not allow the user
978 to continue executing it as this may not work. The dummy frame is poped
980 If we hit a breakpoint, we leave the frame in place and return 2 (the frame
981 will eventually be popped when we do hit the dummy end breakpoint). */
984 run_stack_dummy (CORE_ADDR addr
, struct regcache
*buffer
)
986 struct cleanup
*old_cleanups
= make_cleanup (null_cleanup
, 0);
989 /* Now proceed, having reached the desired place. */
990 clear_proceed_status ();
992 if (CALL_DUMMY_BREAKPOINT_OFFSET_P
)
994 struct breakpoint
*bpt
;
995 struct symtab_and_line sal
;
997 init_sal (&sal
); /* initialize to zeroes */
998 if (CALL_DUMMY_LOCATION
== AT_ENTRY_POINT
)
1000 sal
.pc
= CALL_DUMMY_ADDRESS ();
1004 sal
.pc
= addr
- CALL_DUMMY_START_OFFSET
+ CALL_DUMMY_BREAKPOINT_OFFSET
;
1006 sal
.section
= find_pc_overlay (sal
.pc
);
1008 /* Set up a FRAME for the dummy frame so we can pass it to
1009 set_momentary_breakpoint. We need to give the breakpoint a
1010 frame in case there is only one copy of the dummy (e.g.
1011 CALL_DUMMY_LOCATION == AFTER_TEXT_END). */
1012 flush_cached_frames ();
1013 set_current_frame (create_new_frame (read_fp (), sal
.pc
));
1015 /* If defined, CALL_DUMMY_BREAKPOINT_OFFSET is where we need to put
1016 a breakpoint instruction. If not, the call dummy already has the
1017 breakpoint instruction in it.
1019 addr is the address of the call dummy plus the CALL_DUMMY_START_OFFSET,
1020 so we need to subtract the CALL_DUMMY_START_OFFSET. */
1021 bpt
= set_momentary_breakpoint (sal
,
1022 get_current_frame (),
1024 bpt
->disposition
= disp_del
;
1026 /* If all error()s out of proceed ended up calling normal_stop (and
1027 perhaps they should; it already does in the special case of error
1028 out of resume()), then we wouldn't need this. */
1029 make_cleanup (breakpoint_auto_delete_contents
, &stop_bpstat
);
1032 disable_watchpoints_before_interactive_call_start ();
1033 proceed_to_finish
= 1; /* We want stop_registers, please... */
1035 if (target_can_async_p ())
1036 saved_async
= target_async_mask (0);
1038 proceed (addr
, TARGET_SIGNAL_0
, 0);
1041 target_async_mask (saved_async
);
1043 enable_watchpoints_after_interactive_call_stop ();
1045 discard_cleanups (old_cleanups
);
1047 /* We can stop during an inferior call because a signal is received. */
1048 if (stopped_by_random_signal
)
1051 /* We may also stop prematurely because we hit a breakpoint in the
1053 if (!stop_stack_dummy
)
1056 /* On normal return, the stack dummy has been popped already. */
1057 regcache_cpy_no_passthrough (buffer
, stop_registers
);
1061 /* Proceed until we reach a different source line with pc greater than
1062 our current one or exit the function. We skip calls in both cases.
1064 Note that eventually this command should probably be changed so
1065 that only source lines are printed out when we hit the breakpoint
1066 we set. This may involve changes to wait_for_inferior and the
1067 proceed status code. */
1071 until_next_command (int from_tty
)
1073 struct frame_info
*frame
;
1075 struct symbol
*func
;
1076 struct symtab_and_line sal
;
1078 clear_proceed_status ();
1080 frame
= get_current_frame ();
1082 /* Step until either exited from this function or greater
1083 than the current line (if in symbolic section) or pc (if
1087 func
= find_pc_function (pc
);
1091 struct minimal_symbol
*msymbol
= lookup_minimal_symbol_by_pc (pc
);
1093 if (msymbol
== NULL
)
1094 error ("Execution is not within a known function.");
1096 step_range_start
= SYMBOL_VALUE_ADDRESS (msymbol
);
1097 step_range_end
= pc
;
1101 sal
= find_pc_line (pc
, 0);
1103 step_range_start
= BLOCK_START (SYMBOL_BLOCK_VALUE (func
));
1104 step_range_end
= sal
.end
;
1107 step_over_calls
= STEP_OVER_ALL
;
1108 step_frame_address
= get_frame_base (frame
);
1109 step_sp
= read_sp ();
1111 step_multi
= 0; /* Only one call to proceed */
1113 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
1117 until_command (char *arg
, int from_tty
)
1121 if (!target_has_execution
)
1122 error ("The program is not running.");
1124 /* Find out whether we must run in the background. */
1126 async_exec
= strip_bg_char (&arg
);
1128 /* If we must run in the background, but the target can't do it,
1130 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
1131 error ("Asynchronous execution not supported on this target.");
1133 /* If we are not asked to run in the bg, then prepare to run in the
1134 foreground, synchronously. */
1135 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
1137 /* Simulate synchronous execution */
1138 async_disable_stdin ();
1142 until_break_command (arg
, from_tty
);
1144 until_next_command (from_tty
);
1148 /* Print the result of a function at the end of a 'finish' command. */
1150 print_return_value (int structure_return
, struct type
*value_type
)
1152 struct value
*value
;
1153 static struct ui_stream
*stb
= NULL
;
1155 if (!structure_return
)
1157 value
= value_being_returned (value_type
, stop_registers
, structure_return
);
1158 stb
= ui_out_stream_new (uiout
);
1159 ui_out_text (uiout
, "Value returned is ");
1160 ui_out_field_fmt (uiout
, "gdb-result-var", "$%d", record_latest_value (value
));
1161 ui_out_text (uiout
, " = ");
1162 value_print (value
, stb
->stream
, 0, Val_no_prettyprint
);
1163 ui_out_field_stream (uiout
, "return-value", stb
);
1164 ui_out_text (uiout
, "\n");
1168 /* We cannot determine the contents of the structure because
1169 it is on the stack, and we don't know where, since we did not
1170 initiate the call, as opposed to the call_function_by_hand case */
1171 #ifdef VALUE_RETURNED_FROM_STACK
1173 ui_out_text (uiout
, "Value returned has type: ");
1174 ui_out_field_string (uiout
, "return-type", TYPE_NAME (value_type
));
1175 ui_out_text (uiout
, ".");
1176 ui_out_text (uiout
, " Cannot determine contents\n");
1178 value
= value_being_returned (value_type
, stop_registers
, structure_return
);
1179 stb
= ui_out_stream_new (uiout
);
1180 ui_out_text (uiout
, "Value returned is ");
1181 ui_out_field_fmt (uiout
, "gdb-result-var", "$%d", record_latest_value (value
));
1182 ui_out_text (uiout
, " = ");
1183 value_print (value
, stb
->stream
, 0, Val_no_prettyprint
);
1184 ui_out_field_stream (uiout
, "return-value", stb
);
1185 ui_out_text (uiout
, "\n");
1190 /* Stuff that needs to be done by the finish command after the target
1191 has stopped. In asynchronous mode, we wait for the target to stop in
1192 the call to poll or select in the event loop, so it is impossible to
1193 do all the stuff as part of the finish_command function itself. The
1194 only chance we have to complete this command is in
1195 fetch_inferior_event, which is called by the event loop as soon as it
1196 detects that the target has stopped. This function is called via the
1197 cmd_continuation pointer. */
1199 finish_command_continuation (struct continuation_arg
*arg
)
1201 register struct symbol
*function
;
1202 struct breakpoint
*breakpoint
;
1203 struct cleanup
*cleanups
;
1205 breakpoint
= (struct breakpoint
*) arg
->data
.pointer
;
1206 function
= (struct symbol
*) arg
->next
->data
.pointer
;
1207 cleanups
= (struct cleanup
*) arg
->next
->next
->data
.pointer
;
1209 if (bpstat_find_breakpoint (stop_bpstat
, breakpoint
) != NULL
1212 struct type
*value_type
;
1216 value_type
= TYPE_TARGET_TYPE (SYMBOL_TYPE (function
));
1218 internal_error (__FILE__
, __LINE__
,
1219 "finish_command: function has no target type");
1221 if (TYPE_CODE (value_type
) == TYPE_CODE_VOID
)
1223 do_exec_cleanups (cleanups
);
1227 funcaddr
= BLOCK_START (SYMBOL_BLOCK_VALUE (function
));
1229 struct_return
= using_struct_return (value_of_variable (function
, NULL
),
1231 check_typedef (value_type
),
1232 BLOCK_GCC_COMPILED (SYMBOL_BLOCK_VALUE (function
)));
1234 print_return_value (struct_return
, value_type
);
1236 do_exec_cleanups (cleanups
);
1239 /* "finish": Set a temporary breakpoint at the place
1240 the selected frame will return to, then continue. */
1243 finish_command (char *arg
, int from_tty
)
1245 struct symtab_and_line sal
;
1246 register struct frame_info
*frame
;
1247 register struct symbol
*function
;
1248 struct breakpoint
*breakpoint
;
1249 struct cleanup
*old_chain
;
1250 struct continuation_arg
*arg1
, *arg2
, *arg3
;
1254 /* Find out whether we must run in the background. */
1256 async_exec
= strip_bg_char (&arg
);
1258 /* If we must run in the background, but the target can't do it,
1260 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
1261 error ("Asynchronous execution not supported on this target.");
1263 /* If we are not asked to run in the bg, then prepare to run in the
1264 foreground, synchronously. */
1265 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
1267 /* Simulate synchronous execution */
1268 async_disable_stdin ();
1272 error ("The \"finish\" command does not take any arguments.");
1273 if (!target_has_execution
)
1274 error ("The program is not running.");
1275 if (deprecated_selected_frame
== NULL
)
1276 error ("No selected frame.");
1278 frame
= get_prev_frame (deprecated_selected_frame
);
1280 error ("\"finish\" not meaningful in the outermost frame.");
1282 clear_proceed_status ();
1284 sal
= find_pc_line (frame
->pc
, 0);
1287 breakpoint
= set_momentary_breakpoint (sal
, frame
, bp_finish
);
1289 if (!event_loop_p
|| !target_can_async_p ())
1290 old_chain
= make_cleanup_delete_breakpoint (breakpoint
);
1292 old_chain
= make_exec_cleanup_delete_breakpoint (breakpoint
);
1294 /* Find the function we will return from. */
1296 function
= find_pc_function (deprecated_selected_frame
->pc
);
1298 /* Print info on the selected frame, including level number
1302 printf_filtered ("Run till exit from ");
1303 print_stack_frame (deprecated_selected_frame
,
1304 frame_relative_level (deprecated_selected_frame
), 0);
1307 /* If running asynchronously and the target support asynchronous
1308 execution, set things up for the rest of the finish command to be
1309 completed later on, when gdb has detected that the target has
1310 stopped, in fetch_inferior_event. */
1311 if (event_loop_p
&& target_can_async_p ())
1314 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
1316 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
1318 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
1322 arg1
->data
.pointer
= breakpoint
;
1323 arg2
->data
.pointer
= function
;
1324 arg3
->data
.pointer
= old_chain
;
1325 add_continuation (finish_command_continuation
, arg1
);
1328 proceed_to_finish
= 1; /* We want stop_registers, please... */
1329 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
1331 /* Do this only if not running asynchronously or if the target
1332 cannot do async execution. Otherwise, complete this command when
1333 the target actually stops, in fetch_inferior_event. */
1334 if (!event_loop_p
|| !target_can_async_p ())
1337 /* Did we stop at our breakpoint? */
1338 if (bpstat_find_breakpoint (stop_bpstat
, breakpoint
) != NULL
1341 struct type
*value_type
;
1345 value_type
= TYPE_TARGET_TYPE (SYMBOL_TYPE (function
));
1347 internal_error (__FILE__
, __LINE__
,
1348 "finish_command: function has no target type");
1350 /* FIXME: Shouldn't we do the cleanups before returning? */
1351 if (TYPE_CODE (value_type
) == TYPE_CODE_VOID
)
1354 funcaddr
= BLOCK_START (SYMBOL_BLOCK_VALUE (function
));
1357 using_struct_return (value_of_variable (function
, NULL
),
1359 check_typedef (value_type
),
1360 BLOCK_GCC_COMPILED (SYMBOL_BLOCK_VALUE (function
)));
1362 print_return_value (struct_return
, value_type
);
1364 do_cleanups (old_chain
);
1370 program_info (char *args
, int from_tty
)
1372 bpstat bs
= stop_bpstat
;
1373 int num
= bpstat_num (&bs
);
1375 if (!target_has_execution
)
1377 printf_filtered ("The program being debugged is not being run.\n");
1381 target_files_info ();
1382 printf_filtered ("Program stopped at %s.\n",
1383 local_hex_string ((unsigned long) stop_pc
));
1385 printf_filtered ("It stopped after being stepped.\n");
1388 /* There may be several breakpoints in the same place, so this
1389 isn't as strange as it seems. */
1394 printf_filtered ("It stopped at a breakpoint that has ");
1395 printf_filtered ("since been deleted.\n");
1398 printf_filtered ("It stopped at breakpoint %d.\n", num
);
1399 num
= bpstat_num (&bs
);
1402 else if (stop_signal
!= TARGET_SIGNAL_0
)
1404 printf_filtered ("It stopped with signal %s, %s.\n",
1405 target_signal_to_name (stop_signal
),
1406 target_signal_to_string (stop_signal
));
1411 printf_filtered ("Type \"info stack\" or \"info registers\" ");
1412 printf_filtered ("for more information.\n");
1417 environment_info (char *var
, int from_tty
)
1421 register char *val
= get_in_environ (inferior_environ
, var
);
1424 puts_filtered (var
);
1425 puts_filtered (" = ");
1426 puts_filtered (val
);
1427 puts_filtered ("\n");
1431 puts_filtered ("Environment variable \"");
1432 puts_filtered (var
);
1433 puts_filtered ("\" not defined.\n");
1438 register char **vector
= environ_vector (inferior_environ
);
1441 puts_filtered (*vector
++);
1442 puts_filtered ("\n");
1448 set_environment_command (char *arg
, int from_tty
)
1450 register char *p
, *val
, *var
;
1454 error_no_arg ("environment variable and value");
1456 /* Find seperation between variable name and value */
1457 p
= (char *) strchr (arg
, '=');
1458 val
= (char *) strchr (arg
, ' ');
1460 if (p
!= 0 && val
!= 0)
1462 /* We have both a space and an equals. If the space is before the
1463 equals, walk forward over the spaces til we see a nonspace
1464 (possibly the equals). */
1469 /* Now if the = is after the char following the spaces,
1470 take the char following the spaces. */
1474 else if (val
!= 0 && p
== 0)
1478 error_no_arg ("environment variable to set");
1480 if (p
== 0 || p
[1] == 0)
1484 p
= arg
+ strlen (arg
); /* So that savestring below will work */
1488 /* Not setting variable value to null */
1490 while (*val
== ' ' || *val
== '\t')
1494 while (p
!= arg
&& (p
[-1] == ' ' || p
[-1] == '\t'))
1497 var
= savestring (arg
, p
- arg
);
1500 printf_filtered ("Setting environment variable ");
1501 printf_filtered ("\"%s\" to null value.\n", var
);
1502 set_in_environ (inferior_environ
, var
, "");
1505 set_in_environ (inferior_environ
, var
, val
);
1510 unset_environment_command (char *var
, int from_tty
)
1514 /* If there is no argument, delete all environment variables.
1515 Ask for confirmation if reading from the terminal. */
1516 if (!from_tty
|| query ("Delete all environment variables? "))
1518 free_environ (inferior_environ
);
1519 inferior_environ
= make_environ ();
1523 unset_in_environ (inferior_environ
, var
);
1526 /* Handle the execution path (PATH variable) */
1528 static const char path_var_name
[] = "PATH";
1532 path_info (char *args
, int from_tty
)
1534 puts_filtered ("Executable and object file path: ");
1535 puts_filtered (get_in_environ (inferior_environ
, path_var_name
));
1536 puts_filtered ("\n");
1539 /* Add zero or more directories to the front of the execution path. */
1542 path_command (char *dirname
, int from_tty
)
1547 env
= get_in_environ (inferior_environ
, path_var_name
);
1548 /* Can be null if path is not set */
1551 exec_path
= xstrdup (env
);
1552 mod_path (dirname
, &exec_path
);
1553 set_in_environ (inferior_environ
, path_var_name
, exec_path
);
1556 path_info ((char *) NULL
, from_tty
);
1560 #ifdef REGISTER_NAMES
1561 char *gdb_register_names
[] = REGISTER_NAMES
;
1563 /* Print out the machine register regnum. If regnum is -1, print all
1564 registers (print_all == 1) or all non-float and non-vector
1565 registers (print_all == 0).
1567 For most machines, having all_registers_info() print the
1568 register(s) one per line is good enough. If a different format is
1569 required, (eg, for MIPS or Pyramid 90x, which both have lots of
1570 regs), or there is an existing convention for showing all the
1571 registers, define the architecture method PRINT_REGISTERS_INFO to
1572 provide that format. */
1575 default_print_registers_info (struct gdbarch
*gdbarch
,
1576 struct ui_file
*file
,
1577 struct frame_info
*frame
,
1578 int regnum
, int print_all
)
1581 const int numregs
= NUM_REGS
+ NUM_PSEUDO_REGS
;
1582 char *raw_buffer
= alloca (MAX_REGISTER_RAW_SIZE
);
1583 char *virtual_buffer
= alloca (MAX_REGISTER_VIRTUAL_SIZE
);
1585 if (DEPRECATED_DO_REGISTERS_INFO_P ())
1587 DEPRECATED_DO_REGISTERS_INFO (regnum
, print_all
);
1591 for (i
= 0; i
< numregs
; i
++)
1593 /* Decide between printing all regs, non-float / vector regs, or
1599 if (!gdbarch_register_reggroup_p (gdbarch
, i
, all_reggroup
))
1604 if (!gdbarch_register_reggroup_p (gdbarch
, i
, general_reggroup
))
1614 /* If the register name is empty, it is undefined for this
1615 processor, so don't display anything. */
1616 if (REGISTER_NAME (i
) == NULL
|| *(REGISTER_NAME (i
)) == '\0')
1619 fputs_filtered (REGISTER_NAME (i
), file
);
1620 print_spaces_filtered (15 - strlen (REGISTER_NAME (i
)), file
);
1622 /* Get the data in raw format. */
1623 if (! frame_register_read (frame
, i
, raw_buffer
))
1625 fprintf_filtered (file
, "*value not available*\n");
1629 /* FIXME: cagney/2002-08-03: This code shouldn't be necessary.
1630 The function frame_register_read() should have returned the
1631 pre-cooked register so no conversion is necessary. */
1632 /* Convert raw data to virtual format if necessary. */
1633 if (REGISTER_CONVERTIBLE (i
))
1635 REGISTER_CONVERT_TO_VIRTUAL (i
, REGISTER_VIRTUAL_TYPE (i
),
1636 raw_buffer
, virtual_buffer
);
1640 memcpy (virtual_buffer
, raw_buffer
,
1641 REGISTER_VIRTUAL_SIZE (i
));
1644 /* If virtual format is floating, print it that way, and in raw
1646 if (TYPE_CODE (REGISTER_VIRTUAL_TYPE (i
)) == TYPE_CODE_FLT
)
1650 val_print (REGISTER_VIRTUAL_TYPE (i
), virtual_buffer
, 0, 0,
1651 file
, 0, 1, 0, Val_pretty_default
);
1653 fprintf_filtered (file
, "\t(raw 0x");
1654 for (j
= 0; j
< REGISTER_RAW_SIZE (i
); j
++)
1657 if (TARGET_BYTE_ORDER
== BFD_ENDIAN_BIG
)
1660 idx
= REGISTER_RAW_SIZE (i
) - 1 - j
;
1661 fprintf_filtered (file
, "%02x", (unsigned char) raw_buffer
[idx
]);
1663 fprintf_filtered (file
, ")");
1667 /* Print the register in hex. */
1668 val_print (REGISTER_VIRTUAL_TYPE (i
), virtual_buffer
, 0, 0,
1669 file
, 'x', 1, 0, Val_pretty_default
);
1670 /* If not a vector register, print it also according to its
1672 if (TYPE_VECTOR (REGISTER_VIRTUAL_TYPE (i
)) == 0)
1674 fprintf_filtered (file
, "\t");
1675 val_print (REGISTER_VIRTUAL_TYPE (i
), virtual_buffer
, 0, 0,
1676 file
, 0, 1, 0, Val_pretty_default
);
1680 fprintf_filtered (file
, "\n");
1685 registers_info (char *addr_exp
, int fpregs
)
1687 int regnum
, numregs
;
1690 if (!target_has_registers
)
1691 error ("The program has no registers now.");
1692 if (deprecated_selected_frame
== NULL
)
1693 error ("No selected frame.");
1697 gdbarch_print_registers_info (current_gdbarch
, gdb_stdout
,
1698 deprecated_selected_frame
, -1, fpregs
);
1702 while (*addr_exp
!= '\0')
1707 /* Keep skipping leading white space. */
1708 if (isspace ((*addr_exp
)))
1714 /* Discard any leading ``$''. Check that there is something
1715 resembling a register following it. */
1716 if (addr_exp
[0] == '$')
1718 if (isspace ((*addr_exp
)) || (*addr_exp
) == '\0')
1719 error ("Missing register name");
1721 /* Find the start/end of this register name/num/group. */
1723 while ((*addr_exp
) != '\0' && !isspace ((*addr_exp
)))
1727 /* Figure out what we've found and display it. */
1729 /* A register name? */
1731 int regnum
= frame_map_name_to_regnum (start
, end
- start
);
1734 gdbarch_print_registers_info (current_gdbarch
, gdb_stdout
,
1735 deprecated_selected_frame
, regnum
, fpregs
);
1740 /* A register number? (how portable is this one?). */
1743 int regnum
= strtol (start
, &endptr
, 0);
1746 && regnum
< NUM_REGS
+ NUM_PSEUDO_REGS
)
1748 gdbarch_print_registers_info (current_gdbarch
, gdb_stdout
,
1749 deprecated_selected_frame
, regnum
, fpregs
);
1754 /* A register group? */
1756 struct reggroup
*const *group
;
1757 for (group
= reggroups (current_gdbarch
);
1761 /* Don't bother with a length check. Should the user
1762 enter a short register group name, go with the first
1763 group that matches. */
1764 if (strncmp (start
, reggroup_name ((*group
)), end
- start
) == 0)
1767 if ((*group
) != NULL
)
1770 for (regnum
= 0; regnum
< NUM_REGS
+ NUM_PSEUDO_REGS
; regnum
++)
1772 if (gdbarch_register_reggroup_p (current_gdbarch
, regnum
,
1774 gdbarch_print_registers_info (current_gdbarch
,
1775 gdb_stdout
, deprecated_selected_frame
,
1782 /* Nothing matched. */
1783 error ("Invalid register `%.*s'", (int) (end
- start
), start
);
1788 all_registers_info (char *addr_exp
, int from_tty
)
1790 registers_info (addr_exp
, 1);
1794 nofp_registers_info (char *addr_exp
, int from_tty
)
1796 registers_info (addr_exp
, 0);
1800 print_vector_info (struct gdbarch
*gdbarch
, struct ui_file
*file
,
1801 struct frame_info
*frame
, const char *args
)
1803 if (!target_has_registers
)
1804 error ("The program has no registers now.");
1805 if (deprecated_selected_frame
== NULL
)
1806 error ("No selected frame.");
1808 if (gdbarch_print_vector_info_p (gdbarch
))
1809 gdbarch_print_vector_info (gdbarch
, file
, frame
, args
);
1813 int printed_something
= 0;
1815 for (regnum
= 0; regnum
< NUM_REGS
+ NUM_PSEUDO_REGS
; regnum
++)
1817 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, vector_reggroup
))
1819 printed_something
= 1;
1820 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
1823 if (!printed_something
)
1824 fprintf_filtered (file
, "No vector information\n");
1829 vector_info (char *args
, int from_tty
)
1831 print_vector_info (current_gdbarch
, gdb_stdout
, deprecated_selected_frame
, args
);
1837 * Should save/restore the tty state since it might be that the
1838 * program to be debugged was started on this tty and it wants
1839 * the tty in some state other than what we want. If it's running
1840 * on another terminal or without a terminal, then saving and
1841 * restoring the tty state is a harmless no-op.
1842 * This only needs to be done if we are attaching to a process.
1847 takes a program started up outside of gdb and ``attaches'' to it.
1848 This stops it cold in its tracks and allows us to start debugging it.
1849 and wait for the trace-trap that results from attaching. */
1852 attach_command (char *args
, int from_tty
)
1855 char *full_exec_path
= NULL
;
1857 dont_repeat (); /* Not for the faint of heart */
1859 if (target_has_execution
)
1861 if (query ("A program is being debugged already. Kill it? "))
1864 error ("Not killed.");
1867 target_attach (args
, from_tty
);
1869 /* Set up the "saved terminal modes" of the inferior
1870 based on what modes we are starting it with. */
1871 target_terminal_init ();
1873 /* Install inferior's terminal modes. */
1874 target_terminal_inferior ();
1876 /* Set up execution context to know that we should return from
1877 wait_for_inferior as soon as the target reports a stop. */
1878 init_wait_for_inferior ();
1879 clear_proceed_status ();
1881 /* No traps are generated when attaching to inferior under Mach 3
1883 #ifndef ATTACH_NO_WAIT
1884 stop_soon_quietly
= 1;
1885 wait_for_inferior ();
1889 * If no exec file is yet known, try to determine it from the
1892 exec_file
= (char *) get_exec_file (0);
1895 exec_file
= target_pid_to_exec_file (PIDGET (inferior_ptid
));
1898 /* It's possible we don't have a full path, but rather just a
1899 filename. Some targets, such as HP-UX, don't provide the
1902 Attempt to qualify the filename against the source path.
1903 (If that fails, we'll just fall back on the original
1904 filename. Not much more we can do...)
1906 if (!source_full_path_of (exec_file
, &full_exec_path
))
1907 full_exec_path
= savestring (exec_file
, strlen (exec_file
));
1909 exec_file_attach (full_exec_path
, from_tty
);
1910 symbol_file_add_main (full_exec_path
, from_tty
);
1915 /* Add shared library symbols from the newly attached process, if any. */
1916 SOLIB_ADD ((char *) 0, from_tty
, ¤t_target
, auto_solib_add
);
1917 re_enable_breakpoints_in_shlibs ();
1920 /* Take any necessary post-attaching actions for this platform.
1922 target_post_attach (PIDGET (inferior_ptid
));
1932 * takes a program previously attached to and detaches it.
1933 * The program resumes execution and will no longer stop
1934 * on signals, etc. We better not have left any breakpoints
1935 * in the program or it'll die when it hits one. For this
1936 * to work, it may be necessary for the process to have been
1937 * previously attached. It *might* work if the program was
1938 * started via the normal ptrace (PTRACE_TRACEME).
1942 detach_command (char *args
, int from_tty
)
1944 dont_repeat (); /* Not for the faint of heart */
1945 target_detach (args
, from_tty
);
1946 #if defined(SOLIB_RESTART)
1953 /* Stop the execution of the target while running in async mode, in
1956 interrupt_target_command (char *args
, int from_tty
)
1958 if (event_loop_p
&& target_can_async_p ())
1960 dont_repeat (); /* Not for the faint of heart */
1967 print_float_info (struct gdbarch
*gdbarch
, struct ui_file
*file
,
1968 struct frame_info
*frame
, const char *args
)
1970 if (!target_has_registers
)
1971 error ("The program has no registers now.");
1972 if (deprecated_selected_frame
== NULL
)
1973 error ("No selected frame.");
1975 if (gdbarch_print_float_info_p (gdbarch
))
1976 gdbarch_print_float_info (gdbarch
, file
, frame
, args
);
1980 #if GDB_MULTI_ARCH > GDB_MULTI_ARCH_PARTIAL
1981 #error "FLOAT_INFO defined in multi-arch"
1986 int printed_something
= 0;
1988 for (regnum
= 0; regnum
< NUM_REGS
+ NUM_PSEUDO_REGS
; regnum
++)
1990 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, float_reggroup
))
1992 printed_something
= 1;
1993 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
1996 if (!printed_something
)
1997 fprintf_filtered (file
, "\
1998 No floating-point info available for this processor.\n");
2004 float_info (char *args
, int from_tty
)
2006 print_float_info (current_gdbarch
, gdb_stdout
, deprecated_selected_frame
, args
);
2011 unset_command (char *args
, int from_tty
)
2013 printf_filtered ("\"unset\" must be followed by the name of ");
2014 printf_filtered ("an unset subcommand.\n");
2015 help_list (unsetlist
, "unset ", -1, gdb_stdout
);
2019 _initialize_infcmd (void)
2021 struct cmd_list_element
*c
;
2023 c
= add_com ("tty", class_run
, tty_command
,
2024 "Set terminal for future runs of program being debugged.");
2025 set_cmd_completer (c
, filename_completer
);
2027 c
= add_set_cmd ("args", class_run
, var_string_noescape
,
2028 (char *) &inferior_args
,
2029 "Set argument list to give program being debugged when it is started.\n\
2030 Follow this command with any number of args, to be passed to the program.",
2032 set_cmd_completer (c
, filename_completer
);
2033 set_cmd_sfunc (c
, notice_args_set
);
2034 c
= add_show_from_set (c
, &showlist
);
2035 set_cmd_sfunc (c
, notice_args_read
);
2038 ("environment", no_class
, environment_info
,
2039 "The environment to give the program, or one variable's value.\n\
2040 With an argument VAR, prints the value of environment variable VAR to\n\
2041 give the program being debugged. With no arguments, prints the entire\n\
2042 environment to be given to the program.", &showlist
);
2043 set_cmd_completer (c
, noop_completer
);
2045 add_prefix_cmd ("unset", no_class
, unset_command
,
2046 "Complement to certain \"set\" commands.",
2047 &unsetlist
, "unset ", 0, &cmdlist
);
2049 c
= add_cmd ("environment", class_run
, unset_environment_command
,
2050 "Cancel environment variable VAR for the program.\n\
2051 This does not affect the program until the next \"run\" command.",
2053 set_cmd_completer (c
, noop_completer
);
2055 c
= add_cmd ("environment", class_run
, set_environment_command
,
2056 "Set environment variable value to give the program.\n\
2057 Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\
2058 VALUES of environment variables are uninterpreted strings.\n\
2059 This does not affect the program until the next \"run\" command.",
2061 set_cmd_completer (c
, noop_completer
);
2063 c
= add_com ("path", class_files
, path_command
,
2064 "Add directory DIR(s) to beginning of search path for object files.\n\
2065 $cwd in the path means the current working directory.\n\
2066 This path is equivalent to the $PATH shell variable. It is a list of\n\
2067 directories, separated by colons. These directories are searched to find\n\
2068 fully linked executable files and separately compiled object files as needed.");
2069 set_cmd_completer (c
, filename_completer
);
2071 c
= add_cmd ("paths", no_class
, path_info
,
2072 "Current search path for finding object files.\n\
2073 $cwd in the path means the current working directory.\n\
2074 This path is equivalent to the $PATH shell variable. It is a list of\n\
2075 directories, separated by colons. These directories are searched to find\n\
2076 fully linked executable files and separately compiled object files as needed.",
2078 set_cmd_completer (c
, noop_completer
);
2080 add_com ("attach", class_run
, attach_command
,
2081 "Attach to a process or file outside of GDB.\n\
2082 This command attaches to another target, of the same type as your last\n\
2083 \"target\" command (\"info files\" will show your target stack).\n\
2084 The command may take as argument a process id or a device file.\n\
2085 For a process id, you must have permission to send the process a signal,\n\
2086 and it must have the same effective uid as the debugger.\n\
2087 When using \"attach\" with a process id, the debugger finds the\n\
2088 program running in the process, looking first in the current working\n\
2089 directory, or (if not found there) using the source file search path\n\
2090 (see the \"directory\" command). You can also use the \"file\" command\n\
2091 to specify the program, and to load its symbol table.");
2093 add_com ("detach", class_run
, detach_command
,
2094 "Detach a process or file previously attached.\n\
2095 If a process, it is no longer traced, and it continues its execution. If\n\
2096 you were debugging a file, the file is closed and gdb no longer accesses it.");
2098 add_com ("signal", class_run
, signal_command
,
2099 "Continue program giving it signal specified by the argument.\n\
2100 An argument of \"0\" means continue program without giving it a signal.");
2102 add_com ("stepi", class_run
, stepi_command
,
2103 "Step one instruction exactly.\n\
2104 Argument N means do this N times (or till program stops for another reason).");
2105 add_com_alias ("si", "stepi", class_alias
, 0);
2107 add_com ("nexti", class_run
, nexti_command
,
2108 "Step one instruction, but proceed through subroutine calls.\n\
2109 Argument N means do this N times (or till program stops for another reason).");
2110 add_com_alias ("ni", "nexti", class_alias
, 0);
2112 add_com ("finish", class_run
, finish_command
,
2113 "Execute until selected stack frame returns.\n\
2114 Upon return, the value returned is printed and put in the value history.");
2116 add_com ("next", class_run
, next_command
,
2117 "Step program, proceeding through subroutine calls.\n\
2118 Like the \"step\" command as long as subroutine calls do not happen;\n\
2119 when they do, the call is treated as one instruction.\n\
2120 Argument N means do this N times (or till program stops for another reason).");
2121 add_com_alias ("n", "next", class_run
, 1);
2123 add_com_alias ("S", "next", class_run
, 1);
2125 add_com ("step", class_run
, step_command
,
2126 "Step program until it reaches a different source line.\n\
2127 Argument N means do this N times (or till program stops for another reason).");
2128 add_com_alias ("s", "step", class_run
, 1);
2130 c
= add_com ("until", class_run
, until_command
,
2131 "Execute until the program reaches a source line greater than the current\n\
2132 or a specified line or address or function (same args as break command).\n\
2133 Execution will also stop upon exit from the current stack frame.");
2134 set_cmd_completer (c
, location_completer
);
2135 add_com_alias ("u", "until", class_run
, 1);
2137 c
= add_com ("jump", class_run
, jump_command
,
2138 "Continue program being debugged at specified line or address.\n\
2139 Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\
2140 for an address to start at.");
2141 set_cmd_completer (c
, location_completer
);
2145 c
= add_com ("go", class_run
, go_command
,
2146 "Usage: go <location>\n\
2147 Continue program being debugged, stopping at specified line or \n\
2149 Give as argument either LINENUM or *ADDR, where ADDR is an \n\
2150 expression for an address to start at.\n\
2151 This command is a combination of tbreak and jump.");
2152 set_cmd_completer (c
, location_completer
);
2156 add_com_alias ("g", "go", class_run
, 1);
2158 add_com ("continue", class_run
, continue_command
,
2159 "Continue program being debugged, after signal or breakpoint.\n\
2160 If proceeding from breakpoint, a number N may be used as an argument,\n\
2161 which means to set the ignore count of that breakpoint to N - 1 (so that\n\
2162 the breakpoint won't break until the Nth time it is reached).");
2163 add_com_alias ("c", "cont", class_run
, 1);
2164 add_com_alias ("fg", "cont", class_run
, 1);
2166 c
= add_com ("run", class_run
, run_command
,
2167 "Start debugged program. You may specify arguments to give it.\n\
2168 Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\
2169 Input and output redirection with \">\", \"<\", or \">>\" are also allowed.\n\n\
2170 With no arguments, uses arguments last specified (with \"run\" or \"set args\").\n\
2171 To cancel previous arguments and run with no arguments,\n\
2172 use \"set args\" without arguments.");
2173 set_cmd_completer (c
, filename_completer
);
2174 add_com_alias ("r", "run", class_run
, 1);
2176 add_com ("R", class_run
, run_no_args_command
,
2177 "Start debugged program with no arguments.");
2179 add_com ("interrupt", class_run
, interrupt_target_command
,
2180 "Interrupt the execution of the debugged program.");
2182 add_info ("registers", nofp_registers_info
,
2183 "List of integer registers and their contents, for selected stack frame.\n\
2184 Register name as argument means describe only that register.");
2185 add_info_alias ("r", "registers", 1);
2188 add_com ("lr", class_info
, nofp_registers_info
,
2189 "List of integer registers and their contents, for selected stack frame.\n\
2190 Register name as argument means describe only that register.");
2191 add_info ("all-registers", all_registers_info
,
2192 "List of all registers and their contents, for selected stack frame.\n\
2193 Register name as argument means describe only that register.");
2195 add_info ("program", program_info
,
2196 "Execution status of the program.");
2198 add_info ("float", float_info
,
2199 "Print the status of the floating point unit\n");
2201 add_info ("vector", vector_info
,
2202 "Print the status of the vector unit\n");
2204 inferior_environ
= make_environ ();
2205 init_environ (inferior_environ
);