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 "regcache.h" /* for deprecated_grub_regcache_for_registers(). */
46 /* Functions exported for general use: */
48 void nofp_registers_info (char *, int);
50 void all_registers_info (char *, int);
52 void registers_info (char *, int);
54 /* Local functions: */
56 void continue_command (char *, int);
58 static void print_return_value (int struct_return
, struct type
*value_type
);
60 static void finish_command_continuation (struct continuation_arg
*);
62 static void until_next_command (int);
64 static void until_command (char *, int);
66 static void path_info (char *, int);
68 static void path_command (char *, int);
70 static void unset_command (char *, int);
72 static void float_info (char *, int);
74 static void detach_command (char *, int);
76 static void interrupt_target_command (char *args
, int from_tty
);
78 static void unset_environment_command (char *, int);
80 static void set_environment_command (char *, int);
82 static void environment_info (char *, int);
84 static void program_info (char *, int);
86 static void finish_command (char *, int);
88 static void signal_command (char *, int);
90 static void jump_command (char *, int);
92 static void step_1 (int, int, char *);
93 static void step_once (int skip_subroutines
, int single_inst
, int count
);
94 static void step_1_continuation (struct continuation_arg
*arg
);
96 void nexti_command (char *, int);
98 void stepi_command (char *, int);
100 static void next_command (char *, int);
102 static void step_command (char *, int);
104 static void run_command (char *, int);
106 static void run_no_args_command (char *args
, int from_tty
);
108 static void go_command (char *line_no
, int from_tty
);
110 static int strip_bg_char (char **);
112 void _initialize_infcmd (void);
114 #define GO_USAGE "Usage: go <location>\n"
116 static void breakpoint_auto_delete_contents (PTR
);
118 #define ERROR_NO_INFERIOR \
119 if (!target_has_execution) error ("The program is not being run.");
121 /* String containing arguments to give to the program, separated by spaces.
122 Empty string (pointer to '\0') means no args. */
124 static char *inferior_args
;
126 /* The inferior arguments as a vector. If INFERIOR_ARGC is nonzero,
127 then we must compute INFERIOR_ARGS from this (via the target). */
129 static int inferior_argc
;
130 static char **inferior_argv
;
132 /* File name for default use for standard in/out in the inferior. */
134 char *inferior_io_terminal
;
136 /* Pid of our debugged inferior, or 0 if no inferior now.
137 Since various parts of infrun.c test this to see whether there is a program
138 being debugged it should be nonzero (currently 3 is used) for remote
141 ptid_t inferior_ptid
;
143 /* Last signal that the inferior received (why it stopped). */
145 enum target_signal stop_signal
;
147 /* Address at which inferior stopped. */
151 /* Chain containing status of breakpoint(s) that we have stopped at. */
155 /* Flag indicating that a command has proceeded the inferior past the
156 current breakpoint. */
158 int breakpoint_proceeded
;
160 /* Nonzero if stopped due to a step command. */
164 /* Nonzero if stopped due to completion of a stack dummy routine. */
166 int stop_stack_dummy
;
168 /* Nonzero if stopped due to a random (unexpected) signal in inferior
171 int stopped_by_random_signal
;
173 /* Range to single step within.
174 If this is nonzero, respond to a single-step signal
175 by continuing to step if the pc is in this range. */
177 CORE_ADDR step_range_start
; /* Inclusive */
178 CORE_ADDR step_range_end
; /* Exclusive */
180 /* Stack frame address as of when stepping command was issued.
181 This is how we know when we step into a subroutine call,
182 and how to set the frame for the breakpoint used to step out. */
184 CORE_ADDR step_frame_address
;
186 /* Our notion of the current stack pointer. */
190 enum step_over_calls_kind step_over_calls
;
192 /* If stepping, nonzero means step count is > 1
193 so don't print frame next time inferior stops
194 if it stops due to stepping. */
198 /* Environment to use for running inferior,
199 in format described in environ.h. */
201 struct environ
*inferior_environ
;
203 /* Accessor routines. */
206 get_inferior_args (void)
208 if (inferior_argc
!= 0)
212 n
= gdbarch_construct_inferior_arguments (current_gdbarch
,
213 inferior_argc
, inferior_argv
);
214 old
= set_inferior_args (n
);
218 if (inferior_args
== NULL
)
219 inferior_args
= xstrdup ("");
221 return inferior_args
;
225 set_inferior_args (char *newargs
)
227 char *saved_args
= inferior_args
;
229 inferior_args
= newargs
;
237 set_inferior_args_vector (int argc
, char **argv
)
239 inferior_argc
= argc
;
240 inferior_argv
= argv
;
243 /* Notice when `set args' is run. */
245 notice_args_set (char *args
, int from_tty
, struct cmd_list_element
*c
)
251 /* Notice when `show args' is run. */
253 notice_args_read (char *args
, int from_tty
, struct cmd_list_element
*c
)
255 /* Might compute the value. */
256 get_inferior_args ();
260 /* Compute command-line string given argument vector. This does the
261 same shell processing as fork_inferior. */
264 construct_inferior_arguments (struct gdbarch
*gdbarch
, int argc
, char **argv
)
268 if (STARTUP_WITH_SHELL
)
270 /* This holds all the characters considered special to the
271 typical Unix shells. We include `^' because the SunOS
272 /bin/sh treats it as a synonym for `|'. */
273 char *special
= "\"!#$&*()\\|[]{}<>?'\"`~^; \t\n";
278 /* We over-compute the size. It shouldn't matter. */
279 for (i
= 0; i
< argc
; ++i
)
280 length
+= 2 * strlen (argv
[i
]) + 1;
282 result
= (char *) xmalloc (length
);
285 for (i
= 0; i
< argc
; ++i
)
290 for (cp
= argv
[i
]; *cp
; ++cp
)
292 if (strchr (special
, *cp
) != NULL
)
301 /* In this case we can't handle arguments that contain spaces,
302 tabs, or newlines -- see breakup_args(). */
306 for (i
= 0; i
< argc
; ++i
)
308 char *cp
= strchr (argv
[i
], ' ');
310 cp
= strchr (argv
[i
], '\t');
312 cp
= strchr (argv
[i
], '\n');
314 error ("can't handle command-line argument containing whitespace");
315 length
+= strlen (argv
[i
]) + 1;
318 result
= (char *) xmalloc (length
);
320 for (i
= 0; i
< argc
; ++i
)
323 strcat (result
, " ");
324 strcat (result
, argv
[i
]);
332 /* This function detects whether or not a '&' character (indicating
333 background execution) has been added as *the last* of the arguments ARGS
334 of a command. If it has, it removes it and returns 1. Otherwise it
335 does nothing and returns 0. */
337 strip_bg_char (char **args
)
341 p
= strchr (*args
, '&');
345 if (p
== (*args
+ strlen (*args
) - 1))
347 if (strlen (*args
) > 1)
351 while (*p
== ' ' || *p
== '\t');
364 tty_command (char *file
, int from_tty
)
367 error_no_arg ("terminal name for running target process");
369 inferior_io_terminal
= savestring (file
, strlen (file
));
373 run_command (char *args
, int from_tty
)
379 if (! ptid_equal (inferior_ptid
, null_ptid
) && target_has_execution
)
382 && !query ("The program being debugged has been started already.\n\
383 Start it from the beginning? "))
384 error ("Program not restarted.");
386 #if defined(SOLIB_RESTART)
389 init_wait_for_inferior ();
392 clear_breakpoint_hit_counts ();
394 /* Purge old solib objfiles. */
395 objfile_purge_solibs ();
397 do_run_cleanups (NULL
);
399 /* The comment here used to read, "The exec file is re-read every
400 time we do a generic_mourn_inferior, so we just have to worry
401 about the symbol file." The `generic_mourn_inferior' function
402 gets called whenever the program exits. However, suppose the
403 program exits, and *then* the executable file changes? We need
404 to check again here. Since reopen_exec_file doesn't do anything
405 if the timestamp hasn't changed, I don't see the harm. */
409 exec_file
= (char *) get_exec_file (0);
411 /* We keep symbols from add-symbol-file, on the grounds that the
412 user might want to add some symbols before running the program
413 (right?). But sometimes (dynamic loading where the user manually
414 introduces the new symbols with add-symbol-file), the code which
415 the symbols describe does not persist between runs. Currently
416 the user has to manually nuke all symbols between runs if they
417 want them to go away (PR 2207). This is probably reasonable. */
421 if (event_loop_p
&& target_can_async_p ())
422 async_disable_stdin ();
426 int async_exec
= strip_bg_char (&args
);
428 /* If we get a request for running in the bg but the target
429 doesn't support it, error out. */
430 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
431 error ("Asynchronous execution not supported on this target.");
433 /* If we don't get a request of running in the bg, then we need
434 to simulate synchronous (fg) execution. */
435 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
437 /* Simulate synchronous execution */
438 async_disable_stdin ();
441 /* If there were other args, beside '&', process them. */
444 char *old_args
= set_inferior_args (xstrdup (args
));
451 ui_out_field_string (uiout
, NULL
, "Starting program");
452 ui_out_text (uiout
, ": ");
454 ui_out_field_string (uiout
, "execfile", exec_file
);
455 ui_out_spaces (uiout
, 1);
456 /* We call get_inferior_args() because we might need to compute
458 ui_out_field_string (uiout
, "infargs", get_inferior_args ());
459 ui_out_text (uiout
, "\n");
460 ui_out_flush (uiout
);
463 /* We call get_inferior_args() because we might need to compute
465 target_create_inferior (exec_file
, get_inferior_args (),
466 environ_vector (inferior_environ
));
471 run_no_args_command (char *args
, int from_tty
)
473 char *old_args
= set_inferior_args (xstrdup (""));
479 continue_command (char *proc_count_exp
, int from_tty
)
484 /* Find out whether we must run in the background. */
485 if (proc_count_exp
!= NULL
)
486 async_exec
= strip_bg_char (&proc_count_exp
);
488 /* If we must run in the background, but the target can't do it,
490 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
491 error ("Asynchronous execution not supported on this target.");
493 /* If we are not asked to run in the bg, then prepare to run in the
494 foreground, synchronously. */
495 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
497 /* Simulate synchronous execution */
498 async_disable_stdin ();
501 /* If have argument (besides '&'), set proceed count of breakpoint
503 if (proc_count_exp
!= NULL
)
505 bpstat bs
= stop_bpstat
;
506 int num
= bpstat_num (&bs
);
507 if (num
== 0 && from_tty
)
510 ("Not stopped at any breakpoint; argument ignored.\n");
514 set_ignore_count (num
,
515 parse_and_eval_long (proc_count_exp
) - 1,
517 /* set_ignore_count prints a message ending with a period.
518 So print two spaces before "Continuing.". */
520 printf_filtered (" ");
521 num
= bpstat_num (&bs
);
526 printf_filtered ("Continuing.\n");
528 clear_proceed_status ();
530 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
533 /* Step until outside of current statement. */
537 step_command (char *count_string
, int from_tty
)
539 step_1 (0, 0, count_string
);
542 /* Likewise, but skip over subroutine calls as if single instructions. */
546 next_command (char *count_string
, int from_tty
)
548 step_1 (1, 0, count_string
);
551 /* Likewise, but step only one instruction. */
555 stepi_command (char *count_string
, int from_tty
)
557 step_1 (0, 1, count_string
);
562 nexti_command (char *count_string
, int from_tty
)
564 step_1 (1, 1, count_string
);
568 disable_longjmp_breakpoint_cleanup (void *ignore
)
570 disable_longjmp_breakpoint ();
574 step_1 (int skip_subroutines
, int single_inst
, char *count_string
)
576 register int count
= 1;
577 struct frame_info
*frame
;
578 struct cleanup
*cleanups
= 0;
584 async_exec
= strip_bg_char (&count_string
);
586 /* If we get a request for running in the bg but the target
587 doesn't support it, error out. */
588 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
589 error ("Asynchronous execution not supported on this target.");
591 /* If we don't get a request of running in the bg, then we need
592 to simulate synchronous (fg) execution. */
593 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
595 /* Simulate synchronous execution */
596 async_disable_stdin ();
599 count
= count_string
? parse_and_eval_long (count_string
) : 1;
601 if (!single_inst
|| skip_subroutines
) /* leave si command alone */
603 enable_longjmp_breakpoint ();
604 if (!event_loop_p
|| !target_can_async_p ())
605 cleanups
= make_cleanup (disable_longjmp_breakpoint_cleanup
, 0 /*ignore*/);
607 make_exec_cleanup (disable_longjmp_breakpoint_cleanup
, 0 /*ignore*/);
610 /* In synchronous case, all is well, just use the regular for loop. */
611 if (!event_loop_p
|| !target_can_async_p ())
613 for (; count
> 0; count
--)
615 clear_proceed_status ();
617 frame
= get_current_frame ();
618 if (!frame
) /* Avoid coredump here. Why tho? */
619 error ("No current frame");
620 step_frame_address
= FRAME_FP (frame
);
621 step_sp
= read_sp ();
625 find_pc_line_pc_range (stop_pc
, &step_range_start
, &step_range_end
);
626 if (step_range_end
== 0)
629 if (find_pc_partial_function (stop_pc
, &name
, &step_range_start
,
630 &step_range_end
) == 0)
631 error ("Cannot find bounds of current function");
633 target_terminal_ours ();
635 Single stepping until exit from function %s, \n\
636 which has no line number information.\n", name
);
641 /* Say we are stepping, but stop after one insn whatever it does. */
642 step_range_start
= step_range_end
= 1;
643 if (!skip_subroutines
)
645 Don't step over function calls, not even to functions lacking
647 step_over_calls
= STEP_OVER_NONE
;
650 if (skip_subroutines
)
651 step_over_calls
= STEP_OVER_ALL
;
653 step_multi
= (count
> 1);
654 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
659 /* FIXME: On nexti, this may have already been done (when we hit the
660 step resume break, I think). Probably this should be moved to
661 wait_for_inferior (near the top). */
662 #if defined (SHIFT_INST_REGS)
667 if (!single_inst
|| skip_subroutines
)
668 do_cleanups (cleanups
);
671 /* In case of asynchronous target things get complicated, do only
672 one step for now, before returning control to the event loop. Let
673 the continuation figure out how many other steps we need to do,
674 and handle them one at the time, through step_once(). */
677 if (event_loop_p
&& target_can_async_p ())
678 step_once (skip_subroutines
, single_inst
, count
);
682 /* Called after we are done with one step operation, to check whether
683 we need to step again, before we print the prompt and return control
684 to the user. If count is > 1, we will need to do one more call to
685 proceed(), via step_once(). Basically it is like step_once and
686 step_1_continuation are co-recursive. */
688 step_1_continuation (struct continuation_arg
*arg
)
691 int skip_subroutines
;
694 skip_subroutines
= arg
->data
.integer
;
695 single_inst
= arg
->next
->data
.integer
;
696 count
= arg
->next
->next
->data
.integer
;
700 /* FIXME: On nexti, this may have already been done (when we hit the
701 step resume break, I think). Probably this should be moved to
702 wait_for_inferior (near the top). */
703 #if defined (SHIFT_INST_REGS)
706 step_once (skip_subroutines
, single_inst
, count
- 1);
709 if (!single_inst
|| skip_subroutines
)
710 do_exec_cleanups (ALL_CLEANUPS
);
713 /* Do just one step operation. If count >1 we will have to set up a
714 continuation to be done after the target stops (after this one
715 step). This is useful to implement the 'step n' kind of commands, in
716 case of asynchronous targets. We had to split step_1 into two parts,
717 one to be done before proceed() and one afterwards. This function is
718 called in case of step n with n>1, after the first step operation has
721 step_once (int skip_subroutines
, int single_inst
, int count
)
723 struct continuation_arg
*arg1
;
724 struct continuation_arg
*arg2
;
725 struct continuation_arg
*arg3
;
726 struct frame_info
*frame
;
730 clear_proceed_status ();
732 frame
= get_current_frame ();
733 if (!frame
) /* Avoid coredump here. Why tho? */
734 error ("No current frame");
735 step_frame_address
= FRAME_FP (frame
);
736 step_sp
= read_sp ();
740 find_pc_line_pc_range (stop_pc
, &step_range_start
, &step_range_end
);
742 /* If we have no line info, switch to stepi mode. */
743 if (step_range_end
== 0 && step_stop_if_no_debug
)
745 step_range_start
= step_range_end
= 1;
747 else if (step_range_end
== 0)
750 if (find_pc_partial_function (stop_pc
, &name
, &step_range_start
,
751 &step_range_end
) == 0)
752 error ("Cannot find bounds of current function");
754 target_terminal_ours ();
756 Single stepping until exit from function %s, \n\
757 which has no line number information.\n", name
);
762 /* Say we are stepping, but stop after one insn whatever it does. */
763 step_range_start
= step_range_end
= 1;
764 if (!skip_subroutines
)
766 Don't step over function calls, not even to functions lacking
768 step_over_calls
= STEP_OVER_NONE
;
771 if (skip_subroutines
)
772 step_over_calls
= STEP_OVER_ALL
;
774 step_multi
= (count
> 1);
776 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
778 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
780 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
782 arg1
->data
.integer
= skip_subroutines
;
784 arg2
->data
.integer
= single_inst
;
786 arg3
->data
.integer
= count
;
787 add_intermediate_continuation (step_1_continuation
, arg1
);
788 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
793 /* Continue program at specified address. */
796 jump_command (char *arg
, int from_tty
)
798 register CORE_ADDR addr
;
799 struct symtabs_and_lines sals
;
800 struct symtab_and_line sal
;
807 /* Find out whether we must run in the background. */
809 async_exec
= strip_bg_char (&arg
);
811 /* If we must run in the background, but the target can't do it,
813 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
814 error ("Asynchronous execution not supported on this target.");
816 /* If we are not asked to run in the bg, then prepare to run in the
817 foreground, synchronously. */
818 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
820 /* Simulate synchronous execution */
821 async_disable_stdin ();
825 error_no_arg ("starting address");
827 sals
= decode_line_spec_1 (arg
, 1);
830 error ("Unreasonable jump request");
836 if (sal
.symtab
== 0 && sal
.pc
== 0)
837 error ("No source file has been specified.");
839 resolve_sal_pc (&sal
); /* May error out */
841 /* See if we are trying to jump to another function. */
842 fn
= get_frame_function (get_current_frame ());
843 sfn
= find_pc_function (sal
.pc
);
844 if (fn
!= NULL
&& sfn
!= fn
)
846 if (!query ("Line %d is not in `%s'. Jump anyway? ", sal
.line
,
847 SYMBOL_SOURCE_NAME (fn
)))
849 error ("Not confirmed.");
856 fixup_symbol_section (sfn
, 0);
857 if (section_is_overlay (SYMBOL_BFD_SECTION (sfn
)) &&
858 !section_is_mapped (SYMBOL_BFD_SECTION (sfn
)))
860 if (!query ("WARNING!!! Destination is in unmapped overlay! Jump anyway? "))
862 error ("Not confirmed.");
872 printf_filtered ("Continuing at ");
873 print_address_numeric (addr
, 1, gdb_stdout
);
874 printf_filtered (".\n");
877 clear_proceed_status ();
878 proceed (addr
, TARGET_SIGNAL_0
, 0);
882 /* Go to line or address in current procedure */
884 go_command (char *line_no
, int from_tty
)
886 if (line_no
== (char *) NULL
|| !*line_no
)
887 printf_filtered (GO_USAGE
);
890 tbreak_command (line_no
, from_tty
);
891 jump_command (line_no
, from_tty
);
896 /* Continue program giving it specified signal. */
899 signal_command (char *signum_exp
, int from_tty
)
901 enum target_signal oursig
;
903 dont_repeat (); /* Too dangerous. */
907 error_no_arg ("signal number");
909 /* It would be even slicker to make signal names be valid expressions,
910 (the type could be "enum $signal" or some such), then the user could
911 assign them to convenience variables. */
912 oursig
= target_signal_from_name (signum_exp
);
914 if (oursig
== TARGET_SIGNAL_UNKNOWN
)
916 /* No, try numeric. */
917 int num
= parse_and_eval_long (signum_exp
);
920 oursig
= TARGET_SIGNAL_0
;
922 oursig
= target_signal_from_command (num
);
927 if (oursig
== TARGET_SIGNAL_0
)
928 printf_filtered ("Continuing with no signal.\n");
930 printf_filtered ("Continuing with signal %s.\n",
931 target_signal_to_name (oursig
));
934 clear_proceed_status ();
935 /* "signal 0" should not get stuck if we are stopped at a breakpoint.
936 FIXME: Neither should "signal foo" but when I tried passing
937 (CORE_ADDR)-1 unconditionally I got a testsuite failure which I haven't
938 tried to track down yet. */
939 proceed (oursig
== TARGET_SIGNAL_0
? (CORE_ADDR
) -1 : stop_pc
, oursig
, 0);
942 /* Call breakpoint_auto_delete on the current contents of the bpstat
943 pointed to by arg (which is really a bpstat *). */
946 breakpoint_auto_delete_contents (PTR arg
)
948 breakpoint_auto_delete (*(bpstat
*) arg
);
952 /* Execute a "stack dummy", a piece of code stored in the stack
953 by the debugger to be executed in the inferior.
955 To call: first, do PUSH_DUMMY_FRAME.
956 Then push the contents of the dummy. It should end with a breakpoint insn.
957 Then call here, passing address at which to start the dummy.
959 The contents of all registers are saved before the dummy frame is popped
960 and copied into the buffer BUFFER.
962 The dummy's frame is automatically popped whenever that break is hit.
963 If that is the first time the program stops, run_stack_dummy
964 returns to its caller with that frame already gone and returns 0.
966 Otherwise, run_stack-dummy returns a non-zero value.
967 If the called function receives a random signal, we do not allow the user
968 to continue executing it as this may not work. The dummy frame is poped
970 If we hit a breakpoint, we leave the frame in place and return 2 (the frame
971 will eventually be popped when we do hit the dummy end breakpoint). */
974 run_stack_dummy (CORE_ADDR addr
, char *buffer
)
976 struct cleanup
*old_cleanups
= make_cleanup (null_cleanup
, 0);
979 /* Now proceed, having reached the desired place. */
980 clear_proceed_status ();
982 if (CALL_DUMMY_BREAKPOINT_OFFSET_P
)
984 struct breakpoint
*bpt
;
985 struct symtab_and_line sal
;
987 INIT_SAL (&sal
); /* initialize to zeroes */
988 if (CALL_DUMMY_LOCATION
== AT_ENTRY_POINT
)
990 sal
.pc
= CALL_DUMMY_ADDRESS ();
994 sal
.pc
= addr
- CALL_DUMMY_START_OFFSET
+ CALL_DUMMY_BREAKPOINT_OFFSET
;
996 sal
.section
= find_pc_overlay (sal
.pc
);
998 /* Set up a FRAME for the dummy frame so we can pass it to
999 set_momentary_breakpoint. We need to give the breakpoint a
1000 frame in case there is only one copy of the dummy (e.g.
1001 CALL_DUMMY_LOCATION == AFTER_TEXT_END). */
1002 flush_cached_frames ();
1003 set_current_frame (create_new_frame (read_fp (), sal
.pc
));
1005 /* If defined, CALL_DUMMY_BREAKPOINT_OFFSET is where we need to put
1006 a breakpoint instruction. If not, the call dummy already has the
1007 breakpoint instruction in it.
1009 addr is the address of the call dummy plus the CALL_DUMMY_START_OFFSET,
1010 so we need to subtract the CALL_DUMMY_START_OFFSET. */
1011 bpt
= set_momentary_breakpoint (sal
,
1012 get_current_frame (),
1014 bpt
->disposition
= disp_del
;
1016 /* If all error()s out of proceed ended up calling normal_stop (and
1017 perhaps they should; it already does in the special case of error
1018 out of resume()), then we wouldn't need this. */
1019 make_cleanup (breakpoint_auto_delete_contents
, &stop_bpstat
);
1022 disable_watchpoints_before_interactive_call_start ();
1023 proceed_to_finish
= 1; /* We want stop_registers, please... */
1025 if (target_can_async_p ())
1026 saved_async
= target_async_mask (0);
1028 proceed (addr
, TARGET_SIGNAL_0
, 0);
1031 target_async_mask (saved_async
);
1033 enable_watchpoints_after_interactive_call_stop ();
1035 discard_cleanups (old_cleanups
);
1037 /* We can stop during an inferior call because a signal is received. */
1038 if (stopped_by_random_signal
)
1041 /* We may also stop prematurely because we hit a breakpoint in the
1043 if (!stop_stack_dummy
)
1046 /* On normal return, the stack dummy has been popped already. */
1048 memcpy (buffer
, deprecated_grub_regcache_for_registers (stop_registers
),
1053 /* Proceed until we reach a different source line with pc greater than
1054 our current one or exit the function. We skip calls in both cases.
1056 Note that eventually this command should probably be changed so
1057 that only source lines are printed out when we hit the breakpoint
1058 we set. This may involve changes to wait_for_inferior and the
1059 proceed status code. */
1063 until_next_command (int from_tty
)
1065 struct frame_info
*frame
;
1067 struct symbol
*func
;
1068 struct symtab_and_line sal
;
1070 clear_proceed_status ();
1072 frame
= get_current_frame ();
1074 /* Step until either exited from this function or greater
1075 than the current line (if in symbolic section) or pc (if
1079 func
= find_pc_function (pc
);
1083 struct minimal_symbol
*msymbol
= lookup_minimal_symbol_by_pc (pc
);
1085 if (msymbol
== NULL
)
1086 error ("Execution is not within a known function.");
1088 step_range_start
= SYMBOL_VALUE_ADDRESS (msymbol
);
1089 step_range_end
= pc
;
1093 sal
= find_pc_line (pc
, 0);
1095 step_range_start
= BLOCK_START (SYMBOL_BLOCK_VALUE (func
));
1096 step_range_end
= sal
.end
;
1099 step_over_calls
= STEP_OVER_ALL
;
1100 step_frame_address
= FRAME_FP (frame
);
1101 step_sp
= read_sp ();
1103 step_multi
= 0; /* Only one call to proceed */
1105 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
1109 until_command (char *arg
, int from_tty
)
1113 if (!target_has_execution
)
1114 error ("The program is not running.");
1116 /* Find out whether we must run in the background. */
1118 async_exec
= strip_bg_char (&arg
);
1120 /* If we must run in the background, but the target can't do it,
1122 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
1123 error ("Asynchronous execution not supported on this target.");
1125 /* If we are not asked to run in the bg, then prepare to run in the
1126 foreground, synchronously. */
1127 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
1129 /* Simulate synchronous execution */
1130 async_disable_stdin ();
1134 until_break_command (arg
, from_tty
);
1136 until_next_command (from_tty
);
1140 /* Print the result of a function at the end of a 'finish' command. */
1142 print_return_value (int structure_return
, struct type
*value_type
)
1144 struct value
*value
;
1145 static struct ui_stream
*stb
= NULL
;
1147 if (!structure_return
)
1150 value
= value_being_returned (value_type
, stop_registers
, structure_return
);
1152 /* FIXME: cagney/2002-06-22: Function value_being_returned()
1153 should take a regcache as a parameter. */
1154 value
= value_being_returned
1155 (value_type
, deprecated_grub_regcache_for_registers (stop_registers
),
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");
1179 value
= value_being_returned (value_type
, stop_registers
, structure_return
);
1181 /* FIXME: cagney/2002-06-22: Function value_being_returned()
1182 should take a regcache as a parameter. */
1183 value
= value_being_returned
1184 (value_type
, deprecated_grub_regcache_for_registers (stop_registers
),
1187 stb
= ui_out_stream_new (uiout
);
1188 ui_out_text (uiout
, "Value returned is ");
1189 ui_out_field_fmt (uiout
, "gdb-result-var", "$%d", record_latest_value (value
));
1190 ui_out_text (uiout
, " = ");
1191 value_print (value
, stb
->stream
, 0, Val_no_prettyprint
);
1192 ui_out_field_stream (uiout
, "return-value", stb
);
1193 ui_out_text (uiout
, "\n");
1198 /* Stuff that needs to be done by the finish command after the target
1199 has stopped. In asynchronous mode, we wait for the target to stop in
1200 the call to poll or select in the event loop, so it is impossible to
1201 do all the stuff as part of the finish_command function itself. The
1202 only chance we have to complete this command is in
1203 fetch_inferior_event, which is called by the event loop as soon as it
1204 detects that the target has stopped. This function is called via the
1205 cmd_continuation pointer. */
1207 finish_command_continuation (struct continuation_arg
*arg
)
1209 register struct symbol
*function
;
1210 struct breakpoint
*breakpoint
;
1211 struct cleanup
*cleanups
;
1213 breakpoint
= (struct breakpoint
*) arg
->data
.pointer
;
1214 function
= (struct symbol
*) arg
->next
->data
.pointer
;
1215 cleanups
= (struct cleanup
*) arg
->next
->next
->data
.pointer
;
1217 if (bpstat_find_breakpoint (stop_bpstat
, breakpoint
) != NULL
1220 struct type
*value_type
;
1224 value_type
= TYPE_TARGET_TYPE (SYMBOL_TYPE (function
));
1226 internal_error (__FILE__
, __LINE__
,
1227 "finish_command: function has no target type");
1229 if (TYPE_CODE (value_type
) == TYPE_CODE_VOID
)
1231 do_exec_cleanups (cleanups
);
1235 funcaddr
= BLOCK_START (SYMBOL_BLOCK_VALUE (function
));
1237 struct_return
= using_struct_return (value_of_variable (function
, NULL
),
1239 check_typedef (value_type
),
1240 BLOCK_GCC_COMPILED (SYMBOL_BLOCK_VALUE (function
)));
1242 print_return_value (struct_return
, value_type
);
1244 do_exec_cleanups (cleanups
);
1247 /* "finish": Set a temporary breakpoint at the place
1248 the selected frame will return to, then continue. */
1251 finish_command (char *arg
, int from_tty
)
1253 struct symtab_and_line sal
;
1254 register struct frame_info
*frame
;
1255 register struct symbol
*function
;
1256 struct breakpoint
*breakpoint
;
1257 struct cleanup
*old_chain
;
1258 struct continuation_arg
*arg1
, *arg2
, *arg3
;
1262 /* Find out whether we must run in the background. */
1264 async_exec
= strip_bg_char (&arg
);
1266 /* If we must run in the background, but the target can't do it,
1268 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
1269 error ("Asynchronous execution not supported on this target.");
1271 /* If we are not asked to run in the bg, then prepare to run in the
1272 foreground, synchronously. */
1273 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
1275 /* Simulate synchronous execution */
1276 async_disable_stdin ();
1280 error ("The \"finish\" command does not take any arguments.");
1281 if (!target_has_execution
)
1282 error ("The program is not running.");
1283 if (selected_frame
== NULL
)
1284 error ("No selected frame.");
1286 frame
= get_prev_frame (selected_frame
);
1288 error ("\"finish\" not meaningful in the outermost frame.");
1290 clear_proceed_status ();
1292 sal
= find_pc_line (frame
->pc
, 0);
1295 breakpoint
= set_momentary_breakpoint (sal
, frame
, bp_finish
);
1297 if (!event_loop_p
|| !target_can_async_p ())
1298 old_chain
= make_cleanup_delete_breakpoint (breakpoint
);
1300 old_chain
= make_exec_cleanup_delete_breakpoint (breakpoint
);
1302 /* Find the function we will return from. */
1304 function
= find_pc_function (selected_frame
->pc
);
1306 /* Print info on the selected frame, including level number
1310 printf_filtered ("Run till exit from ");
1311 print_stack_frame (selected_frame
,
1312 frame_relative_level (selected_frame
), 0);
1315 /* If running asynchronously and the target support asynchronous
1316 execution, set things up for the rest of the finish command to be
1317 completed later on, when gdb has detected that the target has
1318 stopped, in fetch_inferior_event. */
1319 if (event_loop_p
&& target_can_async_p ())
1322 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
1324 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
1326 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
1330 arg1
->data
.pointer
= breakpoint
;
1331 arg2
->data
.pointer
= function
;
1332 arg3
->data
.pointer
= old_chain
;
1333 add_continuation (finish_command_continuation
, arg1
);
1336 proceed_to_finish
= 1; /* We want stop_registers, please... */
1337 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
1339 /* Do this only if not running asynchronously or if the target
1340 cannot do async execution. Otherwise, complete this command when
1341 the target actually stops, in fetch_inferior_event. */
1342 if (!event_loop_p
|| !target_can_async_p ())
1345 /* Did we stop at our breakpoint? */
1346 if (bpstat_find_breakpoint (stop_bpstat
, breakpoint
) != NULL
1349 struct type
*value_type
;
1353 value_type
= TYPE_TARGET_TYPE (SYMBOL_TYPE (function
));
1355 internal_error (__FILE__
, __LINE__
,
1356 "finish_command: function has no target type");
1358 /* FIXME: Shouldn't we do the cleanups before returning? */
1359 if (TYPE_CODE (value_type
) == TYPE_CODE_VOID
)
1362 funcaddr
= BLOCK_START (SYMBOL_BLOCK_VALUE (function
));
1365 using_struct_return (value_of_variable (function
, NULL
),
1367 check_typedef (value_type
),
1368 BLOCK_GCC_COMPILED (SYMBOL_BLOCK_VALUE (function
)));
1370 print_return_value (struct_return
, value_type
);
1372 do_cleanups (old_chain
);
1378 program_info (char *args
, int from_tty
)
1380 bpstat bs
= stop_bpstat
;
1381 int num
= bpstat_num (&bs
);
1383 if (!target_has_execution
)
1385 printf_filtered ("The program being debugged is not being run.\n");
1389 target_files_info ();
1390 printf_filtered ("Program stopped at %s.\n",
1391 local_hex_string ((unsigned long) stop_pc
));
1393 printf_filtered ("It stopped after being stepped.\n");
1396 /* There may be several breakpoints in the same place, so this
1397 isn't as strange as it seems. */
1402 printf_filtered ("It stopped at a breakpoint that has ");
1403 printf_filtered ("since been deleted.\n");
1406 printf_filtered ("It stopped at breakpoint %d.\n", num
);
1407 num
= bpstat_num (&bs
);
1410 else if (stop_signal
!= TARGET_SIGNAL_0
)
1412 printf_filtered ("It stopped with signal %s, %s.\n",
1413 target_signal_to_name (stop_signal
),
1414 target_signal_to_string (stop_signal
));
1419 printf_filtered ("Type \"info stack\" or \"info registers\" ");
1420 printf_filtered ("for more information.\n");
1425 environment_info (char *var
, int from_tty
)
1429 register char *val
= get_in_environ (inferior_environ
, var
);
1432 puts_filtered (var
);
1433 puts_filtered (" = ");
1434 puts_filtered (val
);
1435 puts_filtered ("\n");
1439 puts_filtered ("Environment variable \"");
1440 puts_filtered (var
);
1441 puts_filtered ("\" not defined.\n");
1446 register char **vector
= environ_vector (inferior_environ
);
1449 puts_filtered (*vector
++);
1450 puts_filtered ("\n");
1456 set_environment_command (char *arg
, int from_tty
)
1458 register char *p
, *val
, *var
;
1462 error_no_arg ("environment variable and value");
1464 /* Find seperation between variable name and value */
1465 p
= (char *) strchr (arg
, '=');
1466 val
= (char *) strchr (arg
, ' ');
1468 if (p
!= 0 && val
!= 0)
1470 /* We have both a space and an equals. If the space is before the
1471 equals, walk forward over the spaces til we see a nonspace
1472 (possibly the equals). */
1477 /* Now if the = is after the char following the spaces,
1478 take the char following the spaces. */
1482 else if (val
!= 0 && p
== 0)
1486 error_no_arg ("environment variable to set");
1488 if (p
== 0 || p
[1] == 0)
1492 p
= arg
+ strlen (arg
); /* So that savestring below will work */
1496 /* Not setting variable value to null */
1498 while (*val
== ' ' || *val
== '\t')
1502 while (p
!= arg
&& (p
[-1] == ' ' || p
[-1] == '\t'))
1505 var
= savestring (arg
, p
- arg
);
1508 printf_filtered ("Setting environment variable ");
1509 printf_filtered ("\"%s\" to null value.\n", var
);
1510 set_in_environ (inferior_environ
, var
, "");
1513 set_in_environ (inferior_environ
, var
, val
);
1518 unset_environment_command (char *var
, int from_tty
)
1522 /* If there is no argument, delete all environment variables.
1523 Ask for confirmation if reading from the terminal. */
1524 if (!from_tty
|| query ("Delete all environment variables? "))
1526 free_environ (inferior_environ
);
1527 inferior_environ
= make_environ ();
1531 unset_in_environ (inferior_environ
, var
);
1534 /* Handle the execution path (PATH variable) */
1536 static const char path_var_name
[] = "PATH";
1540 path_info (char *args
, int from_tty
)
1542 puts_filtered ("Executable and object file path: ");
1543 puts_filtered (get_in_environ (inferior_environ
, path_var_name
));
1544 puts_filtered ("\n");
1547 /* Add zero or more directories to the front of the execution path. */
1550 path_command (char *dirname
, int from_tty
)
1555 env
= get_in_environ (inferior_environ
, path_var_name
);
1556 /* Can be null if path is not set */
1559 exec_path
= xstrdup (env
);
1560 mod_path (dirname
, &exec_path
);
1561 set_in_environ (inferior_environ
, path_var_name
, exec_path
);
1564 path_info ((char *) NULL
, from_tty
);
1568 #ifdef REGISTER_NAMES
1569 char *gdb_register_names
[] = REGISTER_NAMES
;
1571 /* Print out the machine register regnum. If regnum is -1,
1572 print all registers (fpregs == 1) or all non-float registers
1575 For most machines, having all_registers_info() print the
1576 register(s) one per line is good enough. If a different format
1577 is required, (eg, for MIPS or Pyramid 90x, which both have
1578 lots of regs), or there is an existing convention for showing
1579 all the registers, define the macro DO_REGISTERS_INFO(regnum, fp)
1580 to provide that format. */
1583 do_registers_info (int regnum
, int fpregs
)
1586 int numregs
= NUM_REGS
+ NUM_PSEUDO_REGS
;
1587 char *raw_buffer
= (char*) alloca (MAX_REGISTER_RAW_SIZE
);
1588 char *virtual_buffer
= (char*) alloca (MAX_REGISTER_VIRTUAL_SIZE
);
1590 for (i
= 0; i
< numregs
; i
++)
1592 /* Decide between printing all regs, nonfloat regs, or specific reg. */
1595 if (TYPE_CODE (REGISTER_VIRTUAL_TYPE (i
)) == TYPE_CODE_FLT
&& !fpregs
)
1604 /* If the register name is empty, it is undefined for this
1605 processor, so don't display anything. */
1606 if (REGISTER_NAME (i
) == NULL
|| *(REGISTER_NAME (i
)) == '\0')
1609 fputs_filtered (REGISTER_NAME (i
), gdb_stdout
);
1610 print_spaces_filtered (15 - strlen (REGISTER_NAME (i
)), gdb_stdout
);
1612 /* Get the data in raw format. */
1613 if (! frame_register_read (selected_frame
, i
, raw_buffer
))
1615 printf_filtered ("*value not available*\n");
1619 /* Convert raw data to virtual format if necessary. */
1620 if (REGISTER_CONVERTIBLE (i
))
1622 REGISTER_CONVERT_TO_VIRTUAL (i
, REGISTER_VIRTUAL_TYPE (i
),
1623 raw_buffer
, virtual_buffer
);
1627 memcpy (virtual_buffer
, raw_buffer
,
1628 REGISTER_VIRTUAL_SIZE (i
));
1631 /* If virtual format is floating, print it that way, and in raw hex. */
1632 if (TYPE_CODE (REGISTER_VIRTUAL_TYPE (i
)) == TYPE_CODE_FLT
)
1636 val_print (REGISTER_VIRTUAL_TYPE (i
), virtual_buffer
, 0, 0,
1637 gdb_stdout
, 0, 1, 0, Val_pretty_default
);
1639 printf_filtered ("\t(raw 0x");
1640 for (j
= 0; j
< REGISTER_RAW_SIZE (i
); j
++)
1642 register int idx
= TARGET_BYTE_ORDER
== BFD_ENDIAN_BIG
? j
1643 : REGISTER_RAW_SIZE (i
) - 1 - j
;
1644 printf_filtered ("%02x", (unsigned char) raw_buffer
[idx
]);
1646 printf_filtered (")");
1648 /* Else print as integer in hex and in decimal. */
1651 val_print (REGISTER_VIRTUAL_TYPE (i
), virtual_buffer
, 0, 0,
1652 gdb_stdout
, 'x', 1, 0, Val_pretty_default
);
1653 printf_filtered ("\t");
1654 val_print (REGISTER_VIRTUAL_TYPE (i
), virtual_buffer
, 0, 0,
1655 gdb_stdout
, 0, 1, 0, Val_pretty_default
);
1658 /* The SPARC wants to print even-numbered float regs as doubles
1659 in addition to printing them as floats. */
1660 #ifdef PRINT_REGISTER_HOOK
1661 PRINT_REGISTER_HOOK (i
);
1664 printf_filtered ("\n");
1669 registers_info (char *addr_exp
, int fpregs
)
1671 int regnum
, numregs
;
1674 if (!target_has_registers
)
1675 error ("The program has no registers now.");
1676 if (selected_frame
== NULL
)
1677 error ("No selected frame.");
1681 DO_REGISTERS_INFO (-1, fpregs
);
1687 if (addr_exp
[0] == '$')
1690 while (*end
!= '\0' && *end
!= ' ' && *end
!= '\t')
1692 numregs
= NUM_REGS
+ NUM_PSEUDO_REGS
;
1694 regnum
= target_map_name_to_register (addr_exp
, end
- addr_exp
);
1700 if (*addr_exp
>= '0' && *addr_exp
<= '9')
1701 regnum
= atoi (addr_exp
); /* Take a number */
1702 if (regnum
>= numregs
) /* Bad name, or bad number */
1703 error ("%.*s: invalid register", (int) (end
- addr_exp
), addr_exp
);
1706 DO_REGISTERS_INFO (regnum
, fpregs
);
1709 while (*addr_exp
== ' ' || *addr_exp
== '\t')
1712 while (*addr_exp
!= '\0');
1716 all_registers_info (char *addr_exp
, int from_tty
)
1718 registers_info (addr_exp
, 1);
1722 nofp_registers_info (char *addr_exp
, int from_tty
)
1724 registers_info (addr_exp
, 0);
1730 * Should save/restore the tty state since it might be that the
1731 * program to be debugged was started on this tty and it wants
1732 * the tty in some state other than what we want. If it's running
1733 * on another terminal or without a terminal, then saving and
1734 * restoring the tty state is a harmless no-op.
1735 * This only needs to be done if we are attaching to a process.
1740 takes a program started up outside of gdb and ``attaches'' to it.
1741 This stops it cold in its tracks and allows us to start debugging it.
1742 and wait for the trace-trap that results from attaching. */
1745 attach_command (char *args
, int from_tty
)
1748 char *full_exec_path
= NULL
;
1750 dont_repeat (); /* Not for the faint of heart */
1752 if (target_has_execution
)
1754 if (query ("A program is being debugged already. Kill it? "))
1757 error ("Not killed.");
1760 target_attach (args
, from_tty
);
1762 /* Set up the "saved terminal modes" of the inferior
1763 based on what modes we are starting it with. */
1764 target_terminal_init ();
1766 /* Install inferior's terminal modes. */
1767 target_terminal_inferior ();
1769 /* Set up execution context to know that we should return from
1770 wait_for_inferior as soon as the target reports a stop. */
1771 init_wait_for_inferior ();
1772 clear_proceed_status ();
1774 /* No traps are generated when attaching to inferior under Mach 3
1776 #ifndef ATTACH_NO_WAIT
1777 stop_soon_quietly
= 1;
1778 wait_for_inferior ();
1782 * If no exec file is yet known, try to determine it from the
1785 exec_file
= (char *) get_exec_file (0);
1788 exec_file
= target_pid_to_exec_file (PIDGET (inferior_ptid
));
1791 /* It's possible we don't have a full path, but rather just a
1792 filename. Some targets, such as HP-UX, don't provide the
1795 Attempt to qualify the filename against the source path.
1796 (If that fails, we'll just fall back on the original
1797 filename. Not much more we can do...)
1799 if (!source_full_path_of (exec_file
, &full_exec_path
))
1800 full_exec_path
= savestring (exec_file
, strlen (exec_file
));
1802 exec_file_attach (full_exec_path
, from_tty
);
1803 symbol_file_add_main (full_exec_path
, from_tty
);
1808 /* Add shared library symbols from the newly attached process, if any. */
1809 SOLIB_ADD ((char *) 0, from_tty
, ¤t_target
, auto_solib_add
);
1810 re_enable_breakpoints_in_shlibs ();
1813 /* Take any necessary post-attaching actions for this platform.
1815 target_post_attach (PIDGET (inferior_ptid
));
1825 * takes a program previously attached to and detaches it.
1826 * The program resumes execution and will no longer stop
1827 * on signals, etc. We better not have left any breakpoints
1828 * in the program or it'll die when it hits one. For this
1829 * to work, it may be necessary for the process to have been
1830 * previously attached. It *might* work if the program was
1831 * started via the normal ptrace (PTRACE_TRACEME).
1835 detach_command (char *args
, int from_tty
)
1837 dont_repeat (); /* Not for the faint of heart */
1838 target_detach (args
, from_tty
);
1839 #if defined(SOLIB_RESTART)
1846 /* Stop the execution of the target while running in async mode, in
1850 interrupt_target_command_wrapper (char *args
, int from_tty
)
1852 interrupt_target_command (args
, from_tty
);
1856 interrupt_target_command (char *args
, int from_tty
)
1858 if (event_loop_p
&& target_can_async_p ())
1860 dont_repeat (); /* Not for the faint of heart */
1867 float_info (char *addr_exp
, int from_tty
)
1869 gdbarch_print_float_info (current_gdbarch
, gdb_stdout
, selected_frame
);
1874 unset_command (char *args
, int from_tty
)
1876 printf_filtered ("\"unset\" must be followed by the name of ");
1877 printf_filtered ("an unset subcommand.\n");
1878 help_list (unsetlist
, "unset ", -1, gdb_stdout
);
1882 _initialize_infcmd (void)
1884 struct cmd_list_element
*c
;
1886 c
= add_com ("tty", class_run
, tty_command
,
1887 "Set terminal for future runs of program being debugged.");
1888 set_cmd_completer (c
, filename_completer
);
1890 c
= add_set_cmd ("args", class_run
, var_string_noescape
,
1891 (char *) &inferior_args
,
1892 "Set argument list to give program being debugged when it is started.\n\
1893 Follow this command with any number of args, to be passed to the program.",
1895 set_cmd_completer (c
, filename_completer
);
1896 set_cmd_sfunc (c
, notice_args_set
);
1897 c
= add_show_from_set (c
, &showlist
);
1898 set_cmd_sfunc (c
, notice_args_read
);
1901 ("environment", no_class
, environment_info
,
1902 "The environment to give the program, or one variable's value.\n\
1903 With an argument VAR, prints the value of environment variable VAR to\n\
1904 give the program being debugged. With no arguments, prints the entire\n\
1905 environment to be given to the program.", &showlist
);
1906 set_cmd_completer (c
, noop_completer
);
1908 add_prefix_cmd ("unset", no_class
, unset_command
,
1909 "Complement to certain \"set\" commands.",
1910 &unsetlist
, "unset ", 0, &cmdlist
);
1912 c
= add_cmd ("environment", class_run
, unset_environment_command
,
1913 "Cancel environment variable VAR for the program.\n\
1914 This does not affect the program until the next \"run\" command.",
1916 set_cmd_completer (c
, noop_completer
);
1918 c
= add_cmd ("environment", class_run
, set_environment_command
,
1919 "Set environment variable value to give the program.\n\
1920 Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\
1921 VALUES of environment variables are uninterpreted strings.\n\
1922 This does not affect the program until the next \"run\" command.",
1924 set_cmd_completer (c
, noop_completer
);
1926 c
= add_com ("path", class_files
, path_command
,
1927 "Add directory DIR(s) to beginning of search path for object files.\n\
1928 $cwd in the path means the current working directory.\n\
1929 This path is equivalent to the $PATH shell variable. It is a list of\n\
1930 directories, separated by colons. These directories are searched to find\n\
1931 fully linked executable files and separately compiled object files as needed.");
1932 set_cmd_completer (c
, filename_completer
);
1934 c
= add_cmd ("paths", no_class
, path_info
,
1935 "Current search path for finding object files.\n\
1936 $cwd in the path means the current working directory.\n\
1937 This path is equivalent to the $PATH shell variable. It is a list of\n\
1938 directories, separated by colons. These directories are searched to find\n\
1939 fully linked executable files and separately compiled object files as needed.",
1941 set_cmd_completer (c
, noop_completer
);
1943 add_com ("attach", class_run
, attach_command
,
1944 "Attach to a process or file outside of GDB.\n\
1945 This command attaches to another target, of the same type as your last\n\
1946 \"target\" command (\"info files\" will show your target stack).\n\
1947 The command may take as argument a process id or a device file.\n\
1948 For a process id, you must have permission to send the process a signal,\n\
1949 and it must have the same effective uid as the debugger.\n\
1950 When using \"attach\" with a process id, the debugger finds the\n\
1951 program running in the process, looking first in the current working\n\
1952 directory, or (if not found there) using the source file search path\n\
1953 (see the \"directory\" command). You can also use the \"file\" command\n\
1954 to specify the program, and to load its symbol table.");
1956 add_com ("detach", class_run
, detach_command
,
1957 "Detach a process or file previously attached.\n\
1958 If a process, it is no longer traced, and it continues its execution. If\n\
1959 you were debugging a file, the file is closed and gdb no longer accesses it.");
1961 add_com ("signal", class_run
, signal_command
,
1962 "Continue program giving it signal specified by the argument.\n\
1963 An argument of \"0\" means continue program without giving it a signal.");
1965 add_com ("stepi", class_run
, stepi_command
,
1966 "Step one instruction exactly.\n\
1967 Argument N means do this N times (or till program stops for another reason).");
1968 add_com_alias ("si", "stepi", class_alias
, 0);
1970 add_com ("nexti", class_run
, nexti_command
,
1971 "Step one instruction, but proceed through subroutine calls.\n\
1972 Argument N means do this N times (or till program stops for another reason).");
1973 add_com_alias ("ni", "nexti", class_alias
, 0);
1975 add_com ("finish", class_run
, finish_command
,
1976 "Execute until selected stack frame returns.\n\
1977 Upon return, the value returned is printed and put in the value history.");
1979 add_com ("next", class_run
, next_command
,
1980 "Step program, proceeding through subroutine calls.\n\
1981 Like the \"step\" command as long as subroutine calls do not happen;\n\
1982 when they do, the call is treated as one instruction.\n\
1983 Argument N means do this N times (or till program stops for another reason).");
1984 add_com_alias ("n", "next", class_run
, 1);
1986 add_com_alias ("S", "next", class_run
, 1);
1988 add_com ("step", class_run
, step_command
,
1989 "Step program until it reaches a different source line.\n\
1990 Argument N means do this N times (or till program stops for another reason).");
1991 add_com_alias ("s", "step", class_run
, 1);
1993 c
= add_com ("until", class_run
, until_command
,
1994 "Execute until the program reaches a source line greater than the current\n\
1995 or a specified line or address or function (same args as break command).\n\
1996 Execution will also stop upon exit from the current stack frame.");
1997 set_cmd_completer (c
, location_completer
);
1998 add_com_alias ("u", "until", class_run
, 1);
2000 c
= add_com ("jump", class_run
, jump_command
,
2001 "Continue program being debugged at specified line or address.\n\
2002 Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\
2003 for an address to start at.");
2004 set_cmd_completer (c
, location_completer
);
2008 c
= add_com ("go", class_run
, go_command
,
2009 "Usage: go <location>\n\
2010 Continue program being debugged, stopping at specified line or \n\
2012 Give as argument either LINENUM or *ADDR, where ADDR is an \n\
2013 expression for an address to start at.\n\
2014 This command is a combination of tbreak and jump.");
2015 set_cmd_completer (c
, location_completer
);
2019 add_com_alias ("g", "go", class_run
, 1);
2021 add_com ("continue", class_run
, continue_command
,
2022 "Continue program being debugged, after signal or breakpoint.\n\
2023 If proceeding from breakpoint, a number N may be used as an argument,\n\
2024 which means to set the ignore count of that breakpoint to N - 1 (so that\n\
2025 the breakpoint won't break until the Nth time it is reached).");
2026 add_com_alias ("c", "cont", class_run
, 1);
2027 add_com_alias ("fg", "cont", class_run
, 1);
2029 c
= add_com ("run", class_run
, run_command
,
2030 "Start debugged program. You may specify arguments to give it.\n\
2031 Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\
2032 Input and output redirection with \">\", \"<\", or \">>\" are also allowed.\n\n\
2033 With no arguments, uses arguments last specified (with \"run\" or \"set args\").\n\
2034 To cancel previous arguments and run with no arguments,\n\
2035 use \"set args\" without arguments.");
2036 set_cmd_completer (c
, filename_completer
);
2037 add_com_alias ("r", "run", class_run
, 1);
2039 add_com ("R", class_run
, run_no_args_command
,
2040 "Start debugged program with no arguments.");
2042 add_com ("interrupt", class_run
, interrupt_target_command
,
2043 "Interrupt the execution of the debugged program.");
2045 add_info ("registers", nofp_registers_info
,
2046 "List of integer registers and their contents, for selected stack frame.\n\
2047 Register name as argument means describe only that register.");
2048 add_info_alias ("r", "registers", 1);
2051 add_com ("lr", class_info
, nofp_registers_info
,
2052 "List of integer registers and their contents, for selected stack frame.\n\
2053 Register name as argument means describe only that register.");
2054 add_info ("all-registers", all_registers_info
,
2055 "List of all registers and their contents, for selected stack frame.\n\
2056 Register name as argument means describe only that register.");
2058 add_info ("program", program_info
,
2059 "Execution status of the program.");
2061 add_info ("float", float_info
,
2062 "Print the status of the floating point unit\n");
2064 inferior_environ
= make_environ ();
2065 init_environ (inferior_environ
);