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 /* Functions exported for general use: */
46 void nofp_registers_info (char *, int);
48 void all_registers_info (char *, int);
50 void registers_info (char *, int);
52 /* Local functions: */
54 void continue_command (char *, int);
56 static void print_return_value (int struct_return
, struct type
*value_type
);
58 static void finish_command_continuation (struct continuation_arg
*);
60 static void until_next_command (int);
62 static void until_command (char *, int);
64 static void path_info (char *, int);
66 static void path_command (char *, int);
68 static void unset_command (char *, int);
70 static void float_info (char *, int);
72 static void detach_command (char *, int);
74 static void interrupt_target_command (char *args
, int from_tty
);
76 static void unset_environment_command (char *, int);
78 static void set_environment_command (char *, int);
80 static void environment_info (char *, int);
82 static void program_info (char *, int);
84 static void finish_command (char *, int);
86 static void signal_command (char *, int);
88 static void jump_command (char *, int);
90 static void step_1 (int, int, char *);
91 static void step_once (int skip_subroutines
, int single_inst
, int count
);
92 static void step_1_continuation (struct continuation_arg
*arg
);
94 void nexti_command (char *, int);
96 void stepi_command (char *, int);
98 static void next_command (char *, int);
100 static void step_command (char *, int);
102 static void run_command (char *, int);
104 static void run_no_args_command (char *args
, int from_tty
);
106 static void go_command (char *line_no
, int from_tty
);
108 static int strip_bg_char (char **);
110 void _initialize_infcmd (void);
112 #define GO_USAGE "Usage: go <location>\n"
114 static void breakpoint_auto_delete_contents (PTR
);
116 #define ERROR_NO_INFERIOR \
117 if (!target_has_execution) error ("The program is not being run.");
119 /* String containing arguments to give to the program, separated by spaces.
120 Empty string (pointer to '\0') means no args. */
122 static char *inferior_args
;
124 /* The inferior arguments as a vector. If INFERIOR_ARGC is nonzero,
125 then we must compute INFERIOR_ARGS from this (via the target). */
127 static int inferior_argc
;
128 static char **inferior_argv
;
130 /* File name for default use for standard in/out in the inferior. */
132 char *inferior_io_terminal
;
134 /* Pid of our debugged inferior, or 0 if no inferior now.
135 Since various parts of infrun.c test this to see whether there is a program
136 being debugged it should be nonzero (currently 3 is used) for remote
139 ptid_t inferior_ptid
;
141 /* Last signal that the inferior received (why it stopped). */
143 enum target_signal stop_signal
;
145 /* Address at which inferior stopped. */
149 /* Chain containing status of breakpoint(s) that we have stopped at. */
153 /* Flag indicating that a command has proceeded the inferior past the
154 current breakpoint. */
156 int breakpoint_proceeded
;
158 /* Nonzero if stopped due to a step command. */
162 /* Nonzero if stopped due to completion of a stack dummy routine. */
164 int stop_stack_dummy
;
166 /* Nonzero if stopped due to a random (unexpected) signal in inferior
169 int stopped_by_random_signal
;
171 /* Range to single step within.
172 If this is nonzero, respond to a single-step signal
173 by continuing to step if the pc is in this range. */
175 CORE_ADDR step_range_start
; /* Inclusive */
176 CORE_ADDR step_range_end
; /* Exclusive */
178 /* Stack frame address as of when stepping command was issued.
179 This is how we know when we step into a subroutine call,
180 and how to set the frame for the breakpoint used to step out. */
182 CORE_ADDR step_frame_address
;
184 /* Our notion of the current stack pointer. */
188 enum step_over_calls_kind step_over_calls
;
190 /* If stepping, nonzero means step count is > 1
191 so don't print frame next time inferior stops
192 if it stops due to stepping. */
196 /* Environment to use for running inferior,
197 in format described in environ.h. */
199 struct environ
*inferior_environ
;
201 /* Accessor routines. */
204 get_inferior_args (void)
206 if (inferior_argc
!= 0)
210 n
= gdbarch_construct_inferior_arguments (current_gdbarch
,
211 inferior_argc
, inferior_argv
);
212 old
= set_inferior_args (n
);
216 if (inferior_args
== NULL
)
217 inferior_args
= xstrdup ("");
219 return inferior_args
;
223 set_inferior_args (char *newargs
)
225 char *saved_args
= inferior_args
;
227 inferior_args
= newargs
;
235 set_inferior_args_vector (int argc
, char **argv
)
237 inferior_argc
= argc
;
238 inferior_argv
= argv
;
241 /* Notice when `set args' is run. */
243 notice_args_set (char *args
, int from_tty
, struct cmd_list_element
*c
)
249 /* Notice when `show args' is run. */
251 notice_args_read (struct cmd_list_element
*c
)
253 /* Might compute the value. */
254 get_inferior_args ();
258 /* Compute command-line string given argument vector. This does the
259 same shell processing as fork_inferior. */
262 construct_inferior_arguments (struct gdbarch
*gdbarch
, int argc
, char **argv
)
266 if (STARTUP_WITH_SHELL
)
268 /* This holds all the characters considered special to the
269 typical Unix shells. We include `^' because the SunOS
270 /bin/sh treats it as a synonym for `|'. */
271 char *special
= "\"!#$&*()\\|[]{}<>?'\"`~^; \t\n";
276 /* We over-compute the size. It shouldn't matter. */
277 for (i
= 0; i
< argc
; ++i
)
278 length
+= 2 * strlen (argv
[i
]) + 1;
280 result
= (char *) xmalloc (length
);
283 for (i
= 0; i
< argc
; ++i
)
288 for (cp
= argv
[i
]; *cp
; ++cp
)
290 if (strchr (special
, *cp
) != NULL
)
299 /* In this case we can't handle arguments that contain spaces,
300 tabs, or newlines -- see breakup_args(). */
304 for (i
= 0; i
< argc
; ++i
)
306 char *cp
= strchr (argv
[i
], ' ');
308 cp
= strchr (argv
[i
], '\t');
310 cp
= strchr (argv
[i
], '\n');
312 error ("can't handle command-line argument containing whitespace");
313 length
+= strlen (argv
[i
]) + 1;
316 result
= (char *) xmalloc (length
);
318 for (i
= 0; i
< argc
; ++i
)
321 strcat (result
, " ");
322 strcat (result
, argv
[i
]);
330 /* This function detects whether or not a '&' character (indicating
331 background execution) has been added as *the last* of the arguments ARGS
332 of a command. If it has, it removes it and returns 1. Otherwise it
333 does nothing and returns 0. */
335 strip_bg_char (char **args
)
339 p
= strchr (*args
, '&');
343 if (p
== (*args
+ strlen (*args
) - 1))
345 if (strlen (*args
) > 1)
349 while (*p
== ' ' || *p
== '\t');
362 tty_command (char *file
, int from_tty
)
365 error_no_arg ("terminal name for running target process");
367 inferior_io_terminal
= savestring (file
, strlen (file
));
371 run_command (char *args
, int from_tty
)
377 if (! ptid_equal (inferior_ptid
, null_ptid
) && target_has_execution
)
380 && !query ("The program being debugged has been started already.\n\
381 Start it from the beginning? "))
382 error ("Program not restarted.");
384 #if defined(SOLIB_RESTART)
387 init_wait_for_inferior ();
390 clear_breakpoint_hit_counts ();
392 exec_file
= (char *) get_exec_file (0);
394 /* Purge old solib objfiles. */
395 objfile_purge_solibs ();
397 do_run_cleanups (NULL
);
399 /* The exec file is re-read every time we do a generic_mourn_inferior, so
400 we just have to worry about the symbol file. */
403 /* We keep symbols from add-symbol-file, on the grounds that the
404 user might want to add some symbols before running the program
405 (right?). But sometimes (dynamic loading where the user manually
406 introduces the new symbols with add-symbol-file), the code which
407 the symbols describe does not persist between runs. Currently
408 the user has to manually nuke all symbols between runs if they
409 want them to go away (PR 2207). This is probably reasonable. */
413 if (event_loop_p
&& target_can_async_p ())
414 async_disable_stdin ();
418 int async_exec
= strip_bg_char (&args
);
420 /* If we get a request for running in the bg but the target
421 doesn't support it, error out. */
422 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
423 error ("Asynchronous execution not supported on this target.");
425 /* If we don't get a request of running in the bg, then we need
426 to simulate synchronous (fg) execution. */
427 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
429 /* Simulate synchronous execution */
430 async_disable_stdin ();
433 /* If there were other args, beside '&', process them. */
436 char *old_args
= set_inferior_args (xstrdup (args
));
443 ui_out_field_string (uiout
, NULL
, "Starting program");
444 ui_out_text (uiout
, ": ");
446 ui_out_field_string (uiout
, "execfile", exec_file
);
447 ui_out_spaces (uiout
, 1);
448 /* We call get_inferior_args() because we might need to compute
450 ui_out_field_string (uiout
, "infargs", get_inferior_args ());
451 ui_out_text (uiout
, "\n");
452 ui_out_flush (uiout
);
455 /* We call get_inferior_args() because we might need to compute
457 target_create_inferior (exec_file
, get_inferior_args (),
458 environ_vector (inferior_environ
));
463 run_no_args_command (char *args
, int from_tty
)
465 char *old_args
= set_inferior_args (xstrdup (""));
471 continue_command (char *proc_count_exp
, int from_tty
)
476 /* Find out whether we must run in the background. */
477 if (proc_count_exp
!= NULL
)
478 async_exec
= strip_bg_char (&proc_count_exp
);
480 /* If we must run in the background, but the target can't do it,
482 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
483 error ("Asynchronous execution not supported on this target.");
485 /* If we are not asked to run in the bg, then prepare to run in the
486 foreground, synchronously. */
487 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
489 /* Simulate synchronous execution */
490 async_disable_stdin ();
493 /* If have argument (besides '&'), set proceed count of breakpoint
495 if (proc_count_exp
!= NULL
)
497 bpstat bs
= stop_bpstat
;
498 int num
= bpstat_num (&bs
);
499 if (num
== 0 && from_tty
)
502 ("Not stopped at any breakpoint; argument ignored.\n");
506 set_ignore_count (num
,
507 parse_and_eval_long (proc_count_exp
) - 1,
509 /* set_ignore_count prints a message ending with a period.
510 So print two spaces before "Continuing.". */
512 printf_filtered (" ");
513 num
= bpstat_num (&bs
);
518 printf_filtered ("Continuing.\n");
520 clear_proceed_status ();
522 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
525 /* Step until outside of current statement. */
529 step_command (char *count_string
, int from_tty
)
531 step_1 (0, 0, count_string
);
534 /* Likewise, but skip over subroutine calls as if single instructions. */
538 next_command (char *count_string
, int from_tty
)
540 step_1 (1, 0, count_string
);
543 /* Likewise, but step only one instruction. */
547 stepi_command (char *count_string
, int from_tty
)
549 step_1 (0, 1, count_string
);
554 nexti_command (char *count_string
, int from_tty
)
556 step_1 (1, 1, count_string
);
560 disable_longjmp_breakpoint_cleanup (void *ignore
)
562 disable_longjmp_breakpoint ();
566 step_1 (int skip_subroutines
, int single_inst
, char *count_string
)
568 register int count
= 1;
569 struct frame_info
*frame
;
570 struct cleanup
*cleanups
= 0;
576 async_exec
= strip_bg_char (&count_string
);
578 /* If we get a request for running in the bg but the target
579 doesn't support it, error out. */
580 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
581 error ("Asynchronous execution not supported on this target.");
583 /* If we don't get a request of running in the bg, then we need
584 to simulate synchronous (fg) execution. */
585 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
587 /* Simulate synchronous execution */
588 async_disable_stdin ();
591 count
= count_string
? parse_and_eval_long (count_string
) : 1;
593 if (!single_inst
|| skip_subroutines
) /* leave si command alone */
595 enable_longjmp_breakpoint ();
596 if (!event_loop_p
|| !target_can_async_p ())
597 cleanups
= make_cleanup (disable_longjmp_breakpoint_cleanup
, 0 /*ignore*/);
599 make_exec_cleanup (disable_longjmp_breakpoint_cleanup
, 0 /*ignore*/);
602 /* In synchronous case, all is well, just use the regular for loop. */
603 if (!event_loop_p
|| !target_can_async_p ())
605 for (; count
> 0; count
--)
607 clear_proceed_status ();
609 frame
= get_current_frame ();
610 if (!frame
) /* Avoid coredump here. Why tho? */
611 error ("No current frame");
612 step_frame_address
= FRAME_FP (frame
);
613 step_sp
= read_sp ();
617 find_pc_line_pc_range (stop_pc
, &step_range_start
, &step_range_end
);
618 if (step_range_end
== 0)
621 if (find_pc_partial_function (stop_pc
, &name
, &step_range_start
,
622 &step_range_end
) == 0)
623 error ("Cannot find bounds of current function");
625 target_terminal_ours ();
627 Single stepping until exit from function %s, \n\
628 which has no line number information.\n", name
);
633 /* Say we are stepping, but stop after one insn whatever it does. */
634 step_range_start
= step_range_end
= 1;
635 if (!skip_subroutines
)
637 Don't step over function calls, not even to functions lacking
639 step_over_calls
= STEP_OVER_NONE
;
642 if (skip_subroutines
)
643 step_over_calls
= STEP_OVER_ALL
;
645 step_multi
= (count
> 1);
646 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
651 /* FIXME: On nexti, this may have already been done (when we hit the
652 step resume break, I think). Probably this should be moved to
653 wait_for_inferior (near the top). */
654 #if defined (SHIFT_INST_REGS)
659 if (!single_inst
|| skip_subroutines
)
660 do_cleanups (cleanups
);
663 /* In case of asynchronous target things get complicated, do only
664 one step for now, before returning control to the event loop. Let
665 the continuation figure out how many other steps we need to do,
666 and handle them one at the time, through step_once(). */
669 if (event_loop_p
&& target_can_async_p ())
670 step_once (skip_subroutines
, single_inst
, count
);
674 /* Called after we are done with one step operation, to check whether
675 we need to step again, before we print the prompt and return control
676 to the user. If count is > 1, we will need to do one more call to
677 proceed(), via step_once(). Basically it is like step_once and
678 step_1_continuation are co-recursive. */
680 step_1_continuation (struct continuation_arg
*arg
)
683 int skip_subroutines
;
686 skip_subroutines
= arg
->data
.integer
;
687 single_inst
= arg
->next
->data
.integer
;
688 count
= arg
->next
->next
->data
.integer
;
692 /* FIXME: On nexti, this may have already been done (when we hit the
693 step resume break, I think). Probably this should be moved to
694 wait_for_inferior (near the top). */
695 #if defined (SHIFT_INST_REGS)
698 step_once (skip_subroutines
, single_inst
, count
- 1);
701 if (!single_inst
|| skip_subroutines
)
702 do_exec_cleanups (ALL_CLEANUPS
);
705 /* Do just one step operation. If count >1 we will have to set up a
706 continuation to be done after the target stops (after this one
707 step). This is useful to implement the 'step n' kind of commands, in
708 case of asynchronous targets. We had to split step_1 into two parts,
709 one to be done before proceed() and one afterwards. This function is
710 called in case of step n with n>1, after the first step operation has
713 step_once (int skip_subroutines
, int single_inst
, int count
)
715 struct continuation_arg
*arg1
;
716 struct continuation_arg
*arg2
;
717 struct continuation_arg
*arg3
;
718 struct frame_info
*frame
;
722 clear_proceed_status ();
724 frame
= get_current_frame ();
725 if (!frame
) /* Avoid coredump here. Why tho? */
726 error ("No current frame");
727 step_frame_address
= FRAME_FP (frame
);
728 step_sp
= read_sp ();
732 find_pc_line_pc_range (stop_pc
, &step_range_start
, &step_range_end
);
734 /* If we have no line info, switch to stepi mode. */
735 if (step_range_end
== 0 && step_stop_if_no_debug
)
737 step_range_start
= step_range_end
= 1;
739 else if (step_range_end
== 0)
742 if (find_pc_partial_function (stop_pc
, &name
, &step_range_start
,
743 &step_range_end
) == 0)
744 error ("Cannot find bounds of current function");
746 target_terminal_ours ();
748 Single stepping until exit from function %s, \n\
749 which has no line number information.\n", name
);
754 /* Say we are stepping, but stop after one insn whatever it does. */
755 step_range_start
= step_range_end
= 1;
756 if (!skip_subroutines
)
758 Don't step over function calls, not even to functions lacking
760 step_over_calls
= STEP_OVER_NONE
;
763 if (skip_subroutines
)
764 step_over_calls
= STEP_OVER_ALL
;
766 step_multi
= (count
> 1);
768 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
770 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
772 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
774 arg1
->data
.integer
= skip_subroutines
;
776 arg2
->data
.integer
= single_inst
;
778 arg3
->data
.integer
= count
;
779 add_intermediate_continuation (step_1_continuation
, arg1
);
780 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
785 /* Continue program at specified address. */
788 jump_command (char *arg
, int from_tty
)
790 register CORE_ADDR addr
;
791 struct symtabs_and_lines sals
;
792 struct symtab_and_line sal
;
799 /* Find out whether we must run in the background. */
801 async_exec
= strip_bg_char (&arg
);
803 /* If we must run in the background, but the target can't do it,
805 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
806 error ("Asynchronous execution not supported on this target.");
808 /* If we are not asked to run in the bg, then prepare to run in the
809 foreground, synchronously. */
810 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
812 /* Simulate synchronous execution */
813 async_disable_stdin ();
817 error_no_arg ("starting address");
819 sals
= decode_line_spec_1 (arg
, 1);
822 error ("Unreasonable jump request");
828 if (sal
.symtab
== 0 && sal
.pc
== 0)
829 error ("No source file has been specified.");
831 resolve_sal_pc (&sal
); /* May error out */
833 /* See if we are trying to jump to another function. */
834 fn
= get_frame_function (get_current_frame ());
835 sfn
= find_pc_function (sal
.pc
);
836 if (fn
!= NULL
&& sfn
!= fn
)
838 if (!query ("Line %d is not in `%s'. Jump anyway? ", sal
.line
,
839 SYMBOL_SOURCE_NAME (fn
)))
841 error ("Not confirmed.");
848 fixup_symbol_section (sfn
, 0);
849 if (section_is_overlay (SYMBOL_BFD_SECTION (sfn
)) &&
850 !section_is_mapped (SYMBOL_BFD_SECTION (sfn
)))
852 if (!query ("WARNING!!! Destination is in unmapped overlay! Jump anyway? "))
854 error ("Not confirmed.");
864 printf_filtered ("Continuing at ");
865 print_address_numeric (addr
, 1, gdb_stdout
);
866 printf_filtered (".\n");
869 clear_proceed_status ();
870 proceed (addr
, TARGET_SIGNAL_0
, 0);
874 /* Go to line or address in current procedure */
876 go_command (char *line_no
, int from_tty
)
878 if (line_no
== (char *) NULL
|| !*line_no
)
879 printf_filtered (GO_USAGE
);
882 tbreak_command (line_no
, from_tty
);
883 jump_command (line_no
, from_tty
);
888 /* Continue program giving it specified signal. */
891 signal_command (char *signum_exp
, int from_tty
)
893 enum target_signal oursig
;
895 dont_repeat (); /* Too dangerous. */
899 error_no_arg ("signal number");
901 /* It would be even slicker to make signal names be valid expressions,
902 (the type could be "enum $signal" or some such), then the user could
903 assign them to convenience variables. */
904 oursig
= target_signal_from_name (signum_exp
);
906 if (oursig
== TARGET_SIGNAL_UNKNOWN
)
908 /* No, try numeric. */
909 int num
= parse_and_eval_long (signum_exp
);
912 oursig
= TARGET_SIGNAL_0
;
914 oursig
= target_signal_from_command (num
);
919 if (oursig
== TARGET_SIGNAL_0
)
920 printf_filtered ("Continuing with no signal.\n");
922 printf_filtered ("Continuing with signal %s.\n",
923 target_signal_to_name (oursig
));
926 clear_proceed_status ();
927 /* "signal 0" should not get stuck if we are stopped at a breakpoint.
928 FIXME: Neither should "signal foo" but when I tried passing
929 (CORE_ADDR)-1 unconditionally I got a testsuite failure which I haven't
930 tried to track down yet. */
931 proceed (oursig
== TARGET_SIGNAL_0
? (CORE_ADDR
) -1 : stop_pc
, oursig
, 0);
934 /* Call breakpoint_auto_delete on the current contents of the bpstat
935 pointed to by arg (which is really a bpstat *). */
938 breakpoint_auto_delete_contents (PTR arg
)
940 breakpoint_auto_delete (*(bpstat
*) arg
);
944 /* Execute a "stack dummy", a piece of code stored in the stack
945 by the debugger to be executed in the inferior.
947 To call: first, do PUSH_DUMMY_FRAME.
948 Then push the contents of the dummy. It should end with a breakpoint insn.
949 Then call here, passing address at which to start the dummy.
951 The contents of all registers are saved before the dummy frame is popped
952 and copied into the buffer BUFFER.
954 The dummy's frame is automatically popped whenever that break is hit.
955 If that is the first time the program stops, run_stack_dummy
956 returns to its caller with that frame already gone and returns 0.
958 Otherwise, run_stack-dummy returns a non-zero value.
959 If the called function receives a random signal, we do not allow the user
960 to continue executing it as this may not work. The dummy frame is poped
962 If we hit a breakpoint, we leave the frame in place and return 2 (the frame
963 will eventually be popped when we do hit the dummy end breakpoint). */
966 run_stack_dummy (CORE_ADDR addr
, char *buffer
)
968 struct cleanup
*old_cleanups
= make_cleanup (null_cleanup
, 0);
971 /* Now proceed, having reached the desired place. */
972 clear_proceed_status ();
974 if (CALL_DUMMY_BREAKPOINT_OFFSET_P
)
976 struct breakpoint
*bpt
;
977 struct symtab_and_line sal
;
979 INIT_SAL (&sal
); /* initialize to zeroes */
980 if (CALL_DUMMY_LOCATION
== AT_ENTRY_POINT
)
982 sal
.pc
= CALL_DUMMY_ADDRESS ();
986 sal
.pc
= addr
- CALL_DUMMY_START_OFFSET
+ CALL_DUMMY_BREAKPOINT_OFFSET
;
988 sal
.section
= find_pc_overlay (sal
.pc
);
990 /* Set up a FRAME for the dummy frame so we can pass it to
991 set_momentary_breakpoint. We need to give the breakpoint a
992 frame in case there is only one copy of the dummy (e.g.
993 CALL_DUMMY_LOCATION == AFTER_TEXT_END). */
994 flush_cached_frames ();
995 set_current_frame (create_new_frame (read_fp (), sal
.pc
));
997 /* If defined, CALL_DUMMY_BREAKPOINT_OFFSET is where we need to put
998 a breakpoint instruction. If not, the call dummy already has the
999 breakpoint instruction in it.
1001 addr is the address of the call dummy plus the CALL_DUMMY_START_OFFSET,
1002 so we need to subtract the CALL_DUMMY_START_OFFSET. */
1003 bpt
= set_momentary_breakpoint (sal
,
1004 get_current_frame (),
1006 bpt
->disposition
= disp_del
;
1008 /* If all error()s out of proceed ended up calling normal_stop (and
1009 perhaps they should; it already does in the special case of error
1010 out of resume()), then we wouldn't need this. */
1011 make_cleanup (breakpoint_auto_delete_contents
, &stop_bpstat
);
1014 disable_watchpoints_before_interactive_call_start ();
1015 proceed_to_finish
= 1; /* We want stop_registers, please... */
1017 if (target_can_async_p ())
1018 saved_async
= target_async_mask (0);
1020 proceed (addr
, TARGET_SIGNAL_0
, 0);
1023 target_async_mask (saved_async
);
1025 enable_watchpoints_after_interactive_call_stop ();
1027 discard_cleanups (old_cleanups
);
1029 /* We can stop during an inferior call because a signal is received. */
1030 if (stopped_by_random_signal
)
1033 /* We may also stop prematurely because we hit a breakpoint in the
1035 if (!stop_stack_dummy
)
1038 /* On normal return, the stack dummy has been popped already. */
1040 memcpy (buffer
, stop_registers
, REGISTER_BYTES
);
1044 /* Proceed until we reach a different source line with pc greater than
1045 our current one or exit the function. We skip calls in both cases.
1047 Note that eventually this command should probably be changed so
1048 that only source lines are printed out when we hit the breakpoint
1049 we set. This may involve changes to wait_for_inferior and the
1050 proceed status code. */
1054 until_next_command (int from_tty
)
1056 struct frame_info
*frame
;
1058 struct symbol
*func
;
1059 struct symtab_and_line sal
;
1061 clear_proceed_status ();
1063 frame
= get_current_frame ();
1065 /* Step until either exited from this function or greater
1066 than the current line (if in symbolic section) or pc (if
1070 func
= find_pc_function (pc
);
1074 struct minimal_symbol
*msymbol
= lookup_minimal_symbol_by_pc (pc
);
1076 if (msymbol
== NULL
)
1077 error ("Execution is not within a known function.");
1079 step_range_start
= SYMBOL_VALUE_ADDRESS (msymbol
);
1080 step_range_end
= pc
;
1084 sal
= find_pc_line (pc
, 0);
1086 step_range_start
= BLOCK_START (SYMBOL_BLOCK_VALUE (func
));
1087 step_range_end
= sal
.end
;
1090 step_over_calls
= STEP_OVER_ALL
;
1091 step_frame_address
= FRAME_FP (frame
);
1092 step_sp
= read_sp ();
1094 step_multi
= 0; /* Only one call to proceed */
1096 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
1100 until_command (char *arg
, int from_tty
)
1104 if (!target_has_execution
)
1105 error ("The program is not running.");
1107 /* Find out whether we must run in the background. */
1109 async_exec
= strip_bg_char (&arg
);
1111 /* If we must run in the background, but the target can't do it,
1113 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
1114 error ("Asynchronous execution not supported on this target.");
1116 /* If we are not asked to run in the bg, then prepare to run in the
1117 foreground, synchronously. */
1118 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
1120 /* Simulate synchronous execution */
1121 async_disable_stdin ();
1125 until_break_command (arg
, from_tty
);
1127 until_next_command (from_tty
);
1131 /* Print the result of a function at the end of a 'finish' command. */
1133 print_return_value (int structure_return
, struct type
*value_type
)
1135 struct value
*value
;
1136 static struct ui_stream
*stb
= NULL
;
1138 if (!structure_return
)
1140 value
= value_being_returned (value_type
, stop_registers
, structure_return
);
1141 stb
= ui_out_stream_new (uiout
);
1142 ui_out_text (uiout
, "Value returned is ");
1143 ui_out_field_fmt (uiout
, "gdb-result-var", "$%d", record_latest_value (value
));
1144 ui_out_text (uiout
, " = ");
1145 value_print (value
, stb
->stream
, 0, Val_no_prettyprint
);
1146 ui_out_field_stream (uiout
, "return-value", stb
);
1147 ui_out_text (uiout
, "\n");
1151 /* We cannot determine the contents of the structure because
1152 it is on the stack, and we don't know where, since we did not
1153 initiate the call, as opposed to the call_function_by_hand case */
1154 #ifdef VALUE_RETURNED_FROM_STACK
1156 ui_out_text (uiout
, "Value returned has type: ");
1157 ui_out_field_string (uiout
, "return-type", TYPE_NAME (value_type
));
1158 ui_out_text (uiout
, ".");
1159 ui_out_text (uiout
, " Cannot determine contents\n");
1161 value
= value_being_returned (value_type
, stop_registers
, structure_return
);
1162 stb
= ui_out_stream_new (uiout
);
1163 ui_out_text (uiout
, "Value returned is ");
1164 ui_out_field_fmt (uiout
, "gdb-result-var", "$%d", record_latest_value (value
));
1165 ui_out_text (uiout
, " = ");
1166 value_print (value
, stb
->stream
, 0, Val_no_prettyprint
);
1167 ui_out_field_stream (uiout
, "return-value", stb
);
1168 ui_out_text (uiout
, "\n");
1173 /* Stuff that needs to be done by the finish command after the target
1174 has stopped. In asynchronous mode, we wait for the target to stop in
1175 the call to poll or select in the event loop, so it is impossible to
1176 do all the stuff as part of the finish_command function itself. The
1177 only chance we have to complete this command is in
1178 fetch_inferior_event, which is called by the event loop as soon as it
1179 detects that the target has stopped. This function is called via the
1180 cmd_continuation pointer. */
1182 finish_command_continuation (struct continuation_arg
*arg
)
1184 register struct symbol
*function
;
1185 struct breakpoint
*breakpoint
;
1186 struct cleanup
*cleanups
;
1188 breakpoint
= (struct breakpoint
*) arg
->data
.pointer
;
1189 function
= (struct symbol
*) arg
->next
->data
.pointer
;
1190 cleanups
= (struct cleanup
*) arg
->next
->next
->data
.pointer
;
1192 if (bpstat_find_breakpoint (stop_bpstat
, breakpoint
) != NULL
1195 struct type
*value_type
;
1199 value_type
= TYPE_TARGET_TYPE (SYMBOL_TYPE (function
));
1201 internal_error (__FILE__
, __LINE__
,
1202 "finish_command: function has no target type");
1204 if (TYPE_CODE (value_type
) == TYPE_CODE_VOID
)
1206 do_exec_cleanups (cleanups
);
1210 funcaddr
= BLOCK_START (SYMBOL_BLOCK_VALUE (function
));
1212 struct_return
= using_struct_return (value_of_variable (function
, NULL
),
1214 check_typedef (value_type
),
1215 BLOCK_GCC_COMPILED (SYMBOL_BLOCK_VALUE (function
)));
1217 print_return_value (struct_return
, value_type
);
1219 do_exec_cleanups (cleanups
);
1222 /* "finish": Set a temporary breakpoint at the place
1223 the selected frame will return to, then continue. */
1226 finish_command (char *arg
, int from_tty
)
1228 struct symtab_and_line sal
;
1229 register struct frame_info
*frame
;
1230 register struct symbol
*function
;
1231 struct breakpoint
*breakpoint
;
1232 struct cleanup
*old_chain
;
1233 struct continuation_arg
*arg1
, *arg2
, *arg3
;
1237 /* Find out whether we must run in the background. */
1239 async_exec
= strip_bg_char (&arg
);
1241 /* If we must run in the background, but the target can't do it,
1243 if (event_loop_p
&& async_exec
&& !target_can_async_p ())
1244 error ("Asynchronous execution not supported on this target.");
1246 /* If we are not asked to run in the bg, then prepare to run in the
1247 foreground, synchronously. */
1248 if (event_loop_p
&& !async_exec
&& target_can_async_p ())
1250 /* Simulate synchronous execution */
1251 async_disable_stdin ();
1255 error ("The \"finish\" command does not take any arguments.");
1256 if (!target_has_execution
)
1257 error ("The program is not running.");
1258 if (selected_frame
== NULL
)
1259 error ("No selected frame.");
1261 frame
= get_prev_frame (selected_frame
);
1263 error ("\"finish\" not meaningful in the outermost frame.");
1265 clear_proceed_status ();
1267 sal
= find_pc_line (frame
->pc
, 0);
1270 breakpoint
= set_momentary_breakpoint (sal
, frame
, bp_finish
);
1272 if (!event_loop_p
|| !target_can_async_p ())
1273 old_chain
= make_cleanup_delete_breakpoint (breakpoint
);
1275 old_chain
= make_exec_cleanup_delete_breakpoint (breakpoint
);
1277 /* Find the function we will return from. */
1279 function
= find_pc_function (selected_frame
->pc
);
1281 /* Print info on the selected frame, including level number
1285 printf_filtered ("Run till exit from ");
1286 print_stack_frame (selected_frame
, selected_frame_level
, 0);
1289 /* If running asynchronously and the target support asynchronous
1290 execution, set things up for the rest of the finish command to be
1291 completed later on, when gdb has detected that the target has
1292 stopped, in fetch_inferior_event. */
1293 if (event_loop_p
&& target_can_async_p ())
1296 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
1298 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
1300 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
1304 arg1
->data
.pointer
= breakpoint
;
1305 arg2
->data
.pointer
= function
;
1306 arg3
->data
.pointer
= old_chain
;
1307 add_continuation (finish_command_continuation
, arg1
);
1310 proceed_to_finish
= 1; /* We want stop_registers, please... */
1311 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
1313 /* Do this only if not running asynchronously or if the target
1314 cannot do async execution. Otherwise, complete this command when
1315 the target actually stops, in fetch_inferior_event. */
1316 if (!event_loop_p
|| !target_can_async_p ())
1319 /* Did we stop at our breakpoint? */
1320 if (bpstat_find_breakpoint (stop_bpstat
, breakpoint
) != NULL
1323 struct type
*value_type
;
1327 value_type
= TYPE_TARGET_TYPE (SYMBOL_TYPE (function
));
1329 internal_error (__FILE__
, __LINE__
,
1330 "finish_command: function has no target type");
1332 /* FIXME: Shouldn't we do the cleanups before returning? */
1333 if (TYPE_CODE (value_type
) == TYPE_CODE_VOID
)
1336 funcaddr
= BLOCK_START (SYMBOL_BLOCK_VALUE (function
));
1339 using_struct_return (value_of_variable (function
, NULL
),
1341 check_typedef (value_type
),
1342 BLOCK_GCC_COMPILED (SYMBOL_BLOCK_VALUE (function
)));
1344 print_return_value (struct_return
, value_type
);
1346 do_cleanups (old_chain
);
1352 program_info (char *args
, int from_tty
)
1354 bpstat bs
= stop_bpstat
;
1355 int num
= bpstat_num (&bs
);
1357 if (!target_has_execution
)
1359 printf_filtered ("The program being debugged is not being run.\n");
1363 target_files_info ();
1364 printf_filtered ("Program stopped at %s.\n",
1365 local_hex_string ((unsigned long) stop_pc
));
1367 printf_filtered ("It stopped after being stepped.\n");
1370 /* There may be several breakpoints in the same place, so this
1371 isn't as strange as it seems. */
1376 printf_filtered ("It stopped at a breakpoint that has ");
1377 printf_filtered ("since been deleted.\n");
1380 printf_filtered ("It stopped at breakpoint %d.\n", num
);
1381 num
= bpstat_num (&bs
);
1384 else if (stop_signal
!= TARGET_SIGNAL_0
)
1386 printf_filtered ("It stopped with signal %s, %s.\n",
1387 target_signal_to_name (stop_signal
),
1388 target_signal_to_string (stop_signal
));
1393 printf_filtered ("Type \"info stack\" or \"info registers\" ");
1394 printf_filtered ("for more information.\n");
1399 environment_info (char *var
, int from_tty
)
1403 register char *val
= get_in_environ (inferior_environ
, var
);
1406 puts_filtered (var
);
1407 puts_filtered (" = ");
1408 puts_filtered (val
);
1409 puts_filtered ("\n");
1413 puts_filtered ("Environment variable \"");
1414 puts_filtered (var
);
1415 puts_filtered ("\" not defined.\n");
1420 register char **vector
= environ_vector (inferior_environ
);
1423 puts_filtered (*vector
++);
1424 puts_filtered ("\n");
1430 set_environment_command (char *arg
, int from_tty
)
1432 register char *p
, *val
, *var
;
1436 error_no_arg ("environment variable and value");
1438 /* Find seperation between variable name and value */
1439 p
= (char *) strchr (arg
, '=');
1440 val
= (char *) strchr (arg
, ' ');
1442 if (p
!= 0 && val
!= 0)
1444 /* We have both a space and an equals. If the space is before the
1445 equals, walk forward over the spaces til we see a nonspace
1446 (possibly the equals). */
1451 /* Now if the = is after the char following the spaces,
1452 take the char following the spaces. */
1456 else if (val
!= 0 && p
== 0)
1460 error_no_arg ("environment variable to set");
1462 if (p
== 0 || p
[1] == 0)
1466 p
= arg
+ strlen (arg
); /* So that savestring below will work */
1470 /* Not setting variable value to null */
1472 while (*val
== ' ' || *val
== '\t')
1476 while (p
!= arg
&& (p
[-1] == ' ' || p
[-1] == '\t'))
1479 var
= savestring (arg
, p
- arg
);
1482 printf_filtered ("Setting environment variable ");
1483 printf_filtered ("\"%s\" to null value.\n", var
);
1484 set_in_environ (inferior_environ
, var
, "");
1487 set_in_environ (inferior_environ
, var
, val
);
1492 unset_environment_command (char *var
, int from_tty
)
1496 /* If there is no argument, delete all environment variables.
1497 Ask for confirmation if reading from the terminal. */
1498 if (!from_tty
|| query ("Delete all environment variables? "))
1500 free_environ (inferior_environ
);
1501 inferior_environ
= make_environ ();
1505 unset_in_environ (inferior_environ
, var
);
1508 /* Handle the execution path (PATH variable) */
1510 static const char path_var_name
[] = "PATH";
1514 path_info (char *args
, int from_tty
)
1516 puts_filtered ("Executable and object file path: ");
1517 puts_filtered (get_in_environ (inferior_environ
, path_var_name
));
1518 puts_filtered ("\n");
1521 /* Add zero or more directories to the front of the execution path. */
1524 path_command (char *dirname
, int from_tty
)
1529 env
= get_in_environ (inferior_environ
, path_var_name
);
1530 /* Can be null if path is not set */
1533 exec_path
= xstrdup (env
);
1534 mod_path (dirname
, &exec_path
);
1535 set_in_environ (inferior_environ
, path_var_name
, exec_path
);
1538 path_info ((char *) NULL
, from_tty
);
1542 #ifdef REGISTER_NAMES
1543 char *gdb_register_names
[] = REGISTER_NAMES
;
1545 /* Print out the machine register regnum. If regnum is -1,
1546 print all registers (fpregs == 1) or all non-float registers
1549 For most machines, having all_registers_info() print the
1550 register(s) one per line is good enough. If a different format
1551 is required, (eg, for MIPS or Pyramid 90x, which both have
1552 lots of regs), or there is an existing convention for showing
1553 all the registers, define the macro DO_REGISTERS_INFO(regnum, fp)
1554 to provide that format. */
1557 do_registers_info (int regnum
, int fpregs
)
1560 int numregs
= NUM_REGS
+ NUM_PSEUDO_REGS
;
1561 char *raw_buffer
= (char*) alloca (MAX_REGISTER_RAW_SIZE
);
1562 char *virtual_buffer
= (char*) alloca (MAX_REGISTER_VIRTUAL_SIZE
);
1564 for (i
= 0; i
< numregs
; i
++)
1566 /* Decide between printing all regs, nonfloat regs, or specific reg. */
1569 if (TYPE_CODE (REGISTER_VIRTUAL_TYPE (i
)) == TYPE_CODE_FLT
&& !fpregs
)
1578 /* If the register name is empty, it is undefined for this
1579 processor, so don't display anything. */
1580 if (REGISTER_NAME (i
) == NULL
|| *(REGISTER_NAME (i
)) == '\0')
1583 fputs_filtered (REGISTER_NAME (i
), gdb_stdout
);
1584 print_spaces_filtered (15 - strlen (REGISTER_NAME (i
)), gdb_stdout
);
1586 /* Get the data in raw format. */
1587 if (read_relative_register_raw_bytes (i
, raw_buffer
))
1589 printf_filtered ("*value not available*\n");
1593 /* Convert raw data to virtual format if necessary. */
1594 if (REGISTER_CONVERTIBLE (i
))
1596 REGISTER_CONVERT_TO_VIRTUAL (i
, REGISTER_VIRTUAL_TYPE (i
),
1597 raw_buffer
, virtual_buffer
);
1601 memcpy (virtual_buffer
, raw_buffer
,
1602 REGISTER_VIRTUAL_SIZE (i
));
1605 /* If virtual format is floating, print it that way, and in raw hex. */
1606 if (TYPE_CODE (REGISTER_VIRTUAL_TYPE (i
)) == TYPE_CODE_FLT
)
1610 #ifdef INVALID_FLOAT
1611 if (INVALID_FLOAT (virtual_buffer
, REGISTER_VIRTUAL_SIZE (i
)))
1612 printf_filtered ("<invalid float>");
1615 val_print (REGISTER_VIRTUAL_TYPE (i
), virtual_buffer
, 0, 0,
1616 gdb_stdout
, 0, 1, 0, Val_pretty_default
);
1618 printf_filtered ("\t(raw 0x");
1619 for (j
= 0; j
< REGISTER_RAW_SIZE (i
); j
++)
1621 register int idx
= TARGET_BYTE_ORDER
== BFD_ENDIAN_BIG
? j
1622 : REGISTER_RAW_SIZE (i
) - 1 - j
;
1623 printf_filtered ("%02x", (unsigned char) raw_buffer
[idx
]);
1625 printf_filtered (")");
1627 /* Else print as integer in hex and in decimal. */
1630 val_print (REGISTER_VIRTUAL_TYPE (i
), virtual_buffer
, 0, 0,
1631 gdb_stdout
, 'x', 1, 0, Val_pretty_default
);
1632 printf_filtered ("\t");
1633 val_print (REGISTER_VIRTUAL_TYPE (i
), virtual_buffer
, 0, 0,
1634 gdb_stdout
, 0, 1, 0, Val_pretty_default
);
1637 /* The SPARC wants to print even-numbered float regs as doubles
1638 in addition to printing them as floats. */
1639 #ifdef PRINT_REGISTER_HOOK
1640 PRINT_REGISTER_HOOK (i
);
1643 printf_filtered ("\n");
1648 registers_info (char *addr_exp
, int fpregs
)
1650 int regnum
, numregs
;
1653 if (!target_has_registers
)
1654 error ("The program has no registers now.");
1655 if (selected_frame
== NULL
)
1656 error ("No selected frame.");
1660 DO_REGISTERS_INFO (-1, fpregs
);
1666 if (addr_exp
[0] == '$')
1669 while (*end
!= '\0' && *end
!= ' ' && *end
!= '\t')
1671 numregs
= NUM_REGS
+ NUM_PSEUDO_REGS
;
1673 regnum
= target_map_name_to_register (addr_exp
, end
- addr_exp
);
1679 if (*addr_exp
>= '0' && *addr_exp
<= '9')
1680 regnum
= atoi (addr_exp
); /* Take a number */
1681 if (regnum
>= numregs
) /* Bad name, or bad number */
1682 error ("%.*s: invalid register", end
- addr_exp
, addr_exp
);
1685 DO_REGISTERS_INFO (regnum
, fpregs
);
1688 while (*addr_exp
== ' ' || *addr_exp
== '\t')
1691 while (*addr_exp
!= '\0');
1695 all_registers_info (char *addr_exp
, int from_tty
)
1697 registers_info (addr_exp
, 1);
1701 nofp_registers_info (char *addr_exp
, int from_tty
)
1703 registers_info (addr_exp
, 0);
1709 * Should save/restore the tty state since it might be that the
1710 * program to be debugged was started on this tty and it wants
1711 * the tty in some state other than what we want. If it's running
1712 * on another terminal or without a terminal, then saving and
1713 * restoring the tty state is a harmless no-op.
1714 * This only needs to be done if we are attaching to a process.
1719 takes a program started up outside of gdb and ``attaches'' to it.
1720 This stops it cold in its tracks and allows us to start debugging it.
1721 and wait for the trace-trap that results from attaching. */
1724 attach_command (char *args
, int from_tty
)
1727 char *full_exec_path
= NULL
;
1729 dont_repeat (); /* Not for the faint of heart */
1731 if (target_has_execution
)
1733 if (query ("A program is being debugged already. Kill it? "))
1736 error ("Not killed.");
1739 target_attach (args
, from_tty
);
1741 /* Set up the "saved terminal modes" of the inferior
1742 based on what modes we are starting it with. */
1743 target_terminal_init ();
1745 /* Install inferior's terminal modes. */
1746 target_terminal_inferior ();
1748 /* Set up execution context to know that we should return from
1749 wait_for_inferior as soon as the target reports a stop. */
1750 init_wait_for_inferior ();
1751 clear_proceed_status ();
1753 /* No traps are generated when attaching to inferior under Mach 3
1755 #ifndef ATTACH_NO_WAIT
1756 stop_soon_quietly
= 1;
1757 wait_for_inferior ();
1761 * If no exec file is yet known, try to determine it from the
1764 exec_file
= (char *) get_exec_file (0);
1767 exec_file
= target_pid_to_exec_file (PIDGET (inferior_ptid
));
1770 /* It's possible we don't have a full path, but rather just a
1771 filename. Some targets, such as HP-UX, don't provide the
1774 Attempt to qualify the filename against the source path.
1775 (If that fails, we'll just fall back on the original
1776 filename. Not much more we can do...)
1778 if (!source_full_path_of (exec_file
, &full_exec_path
))
1779 full_exec_path
= savestring (exec_file
, strlen (exec_file
));
1781 exec_file_attach (full_exec_path
, from_tty
);
1782 symbol_file_add_main (full_exec_path
, from_tty
);
1787 /* Add shared library symbols from the newly attached process, if any. */
1788 SOLIB_ADD ((char *) 0, from_tty
, ¤t_target
, auto_solib_add
);
1789 re_enable_breakpoints_in_shlibs ();
1792 /* Take any necessary post-attaching actions for this platform.
1794 target_post_attach (PIDGET (inferior_ptid
));
1804 * takes a program previously attached to and detaches it.
1805 * The program resumes execution and will no longer stop
1806 * on signals, etc. We better not have left any breakpoints
1807 * in the program or it'll die when it hits one. For this
1808 * to work, it may be necessary for the process to have been
1809 * previously attached. It *might* work if the program was
1810 * started via the normal ptrace (PTRACE_TRACEME).
1814 detach_command (char *args
, int from_tty
)
1816 dont_repeat (); /* Not for the faint of heart */
1817 target_detach (args
, from_tty
);
1818 #if defined(SOLIB_RESTART)
1825 /* Stop the execution of the target while running in async mode, in
1829 interrupt_target_command_wrapper (char *args
, int from_tty
)
1831 interrupt_target_command (args
, from_tty
);
1835 interrupt_target_command (char *args
, int from_tty
)
1837 if (event_loop_p
&& target_can_async_p ())
1839 dont_repeat (); /* Not for the faint of heart */
1846 float_info (char *addr_exp
, int from_tty
)
1851 printf_filtered ("No floating point info available for this processor.\n");
1857 unset_command (char *args
, int from_tty
)
1859 printf_filtered ("\"unset\" must be followed by the name of ");
1860 printf_filtered ("an unset subcommand.\n");
1861 help_list (unsetlist
, "unset ", -1, gdb_stdout
);
1865 _initialize_infcmd (void)
1867 struct cmd_list_element
*c
;
1869 c
= add_com ("tty", class_run
, tty_command
,
1870 "Set terminal for future runs of program being debugged.");
1871 c
->completer
= filename_completer
;
1873 c
= add_set_cmd ("args", class_run
, var_string_noescape
,
1874 (char *) &inferior_args
,
1875 "Set argument list to give program being debugged when it is started.\n\
1876 Follow this command with any number of args, to be passed to the program.",
1878 c
->completer
= filename_completer
;
1879 c
->function
.sfunc
= notice_args_set
;
1880 c
= add_show_from_set (c
, &showlist
);
1881 c
->pre_show_hook
= notice_args_read
;
1884 ("environment", no_class
, environment_info
,
1885 "The environment to give the program, or one variable's value.\n\
1886 With an argument VAR, prints the value of environment variable VAR to\n\
1887 give the program being debugged. With no arguments, prints the entire\n\
1888 environment to be given to the program.", &showlist
);
1889 c
->completer
= noop_completer
;
1891 add_prefix_cmd ("unset", no_class
, unset_command
,
1892 "Complement to certain \"set\" commands",
1893 &unsetlist
, "unset ", 0, &cmdlist
);
1895 c
= add_cmd ("environment", class_run
, unset_environment_command
,
1896 "Cancel environment variable VAR for the program.\n\
1897 This does not affect the program until the next \"run\" command.",
1899 c
->completer
= noop_completer
;
1901 c
= add_cmd ("environment", class_run
, set_environment_command
,
1902 "Set environment variable value to give the program.\n\
1903 Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\
1904 VALUES of environment variables are uninterpreted strings.\n\
1905 This does not affect the program until the next \"run\" command.",
1907 c
->completer
= noop_completer
;
1909 c
= add_com ("path", class_files
, path_command
,
1910 "Add directory DIR(s) to beginning of search path for object files.\n\
1911 $cwd in the path means the current working directory.\n\
1912 This path is equivalent to the $PATH shell variable. It is a list of\n\
1913 directories, separated by colons. These directories are searched to find\n\
1914 fully linked executable files and separately compiled object files as needed.");
1915 c
->completer
= filename_completer
;
1917 c
= add_cmd ("paths", no_class
, path_info
,
1918 "Current search path for finding object files.\n\
1919 $cwd in the path means the current working directory.\n\
1920 This path is equivalent to the $PATH shell variable. It is a list of\n\
1921 directories, separated by colons. These directories are searched to find\n\
1922 fully linked executable files and separately compiled object files as needed.",
1924 c
->completer
= noop_completer
;
1926 add_com ("attach", class_run
, attach_command
,
1927 "Attach to a process or file outside of GDB.\n\
1928 This command attaches to another target, of the same type as your last\n\
1929 \"target\" command (\"info files\" will show your target stack).\n\
1930 The command may take as argument a process id or a device file.\n\
1931 For a process id, you must have permission to send the process a signal,\n\
1932 and it must have the same effective uid as the debugger.\n\
1933 When using \"attach\" with a process id, the debugger finds the\n\
1934 program running in the process, looking first in the current working\n\
1935 directory, or (if not found there) using the source file search path\n\
1936 (see the \"directory\" command). You can also use the \"file\" command\n\
1937 to specify the program, and to load its symbol table.");
1939 add_com ("detach", class_run
, detach_command
,
1940 "Detach a process or file previously attached.\n\
1941 If a process, it is no longer traced, and it continues its execution. If\n\
1942 you were debugging a file, the file is closed and gdb no longer accesses it.");
1944 add_com ("signal", class_run
, signal_command
,
1945 "Continue program giving it signal specified by the argument.\n\
1946 An argument of \"0\" means continue program without giving it a signal.");
1948 add_com ("stepi", class_run
, stepi_command
,
1949 "Step one instruction exactly.\n\
1950 Argument N means do this N times (or till program stops for another reason).");
1951 add_com_alias ("si", "stepi", class_alias
, 0);
1953 add_com ("nexti", class_run
, nexti_command
,
1954 "Step one instruction, but proceed through subroutine calls.\n\
1955 Argument N means do this N times (or till program stops for another reason).");
1956 add_com_alias ("ni", "nexti", class_alias
, 0);
1958 add_com ("finish", class_run
, finish_command
,
1959 "Execute until selected stack frame returns.\n\
1960 Upon return, the value returned is printed and put in the value history.");
1962 add_com ("next", class_run
, next_command
,
1963 "Step program, proceeding through subroutine calls.\n\
1964 Like the \"step\" command as long as subroutine calls do not happen;\n\
1965 when they do, the call is treated as one instruction.\n\
1966 Argument N means do this N times (or till program stops for another reason).");
1967 add_com_alias ("n", "next", class_run
, 1);
1969 add_com_alias ("S", "next", class_run
, 1);
1971 add_com ("step", class_run
, step_command
,
1972 "Step program until it reaches a different source line.\n\
1973 Argument N means do this N times (or till program stops for another reason).");
1974 add_com_alias ("s", "step", class_run
, 1);
1976 c
= add_com ("until", class_run
, until_command
,
1977 "Execute until the program reaches a source line greater than the current\n\
1978 or a specified line or address or function (same args as break command).\n\
1979 Execution will also stop upon exit from the current stack frame.");
1980 c
->completer
= location_completer
;
1981 add_com_alias ("u", "until", class_run
, 1);
1983 c
= add_com ("jump", class_run
, jump_command
,
1984 "Continue program being debugged at specified line or address.\n\
1985 Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\
1986 for an address to start at.");
1987 c
->completer
= location_completer
;
1991 c
= add_com ("go", class_run
, go_command
,
1992 "Usage: go <location>\n\
1993 Continue program being debugged, stopping at specified line or \n\
1995 Give as argument either LINENUM or *ADDR, where ADDR is an \n\
1996 expression for an address to start at.\n\
1997 This command is a combination of tbreak and jump.");
1998 c
->completer
= location_completer
;
2002 add_com_alias ("g", "go", class_run
, 1);
2004 add_com ("continue", class_run
, continue_command
,
2005 "Continue program being debugged, after signal or breakpoint.\n\
2006 If proceeding from breakpoint, a number N may be used as an argument,\n\
2007 which means to set the ignore count of that breakpoint to N - 1 (so that\n\
2008 the breakpoint won't break until the Nth time it is reached).");
2009 add_com_alias ("c", "cont", class_run
, 1);
2010 add_com_alias ("fg", "cont", class_run
, 1);
2012 c
= add_com ("run", class_run
, run_command
,
2013 "Start debugged program. You may specify arguments to give it.\n\
2014 Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\
2015 Input and output redirection with \">\", \"<\", or \">>\" are also allowed.\n\n\
2016 With no arguments, uses arguments last specified (with \"run\" or \"set args\").\n\
2017 To cancel previous arguments and run with no arguments,\n\
2018 use \"set args\" without arguments.");
2019 c
->completer
= filename_completer
;
2020 add_com_alias ("r", "run", class_run
, 1);
2022 add_com ("R", class_run
, run_no_args_command
,
2023 "Start debugged program with no arguments.");
2025 add_com ("interrupt", class_run
, interrupt_target_command
,
2026 "Interrupt the execution of the debugged program.");
2028 add_info ("registers", nofp_registers_info
,
2029 "List of integer registers and their contents, for selected stack frame.\n\
2030 Register name as argument means describe only that register.");
2031 add_info_alias ("r", "registers", 1);
2034 add_com ("lr", class_info
, nofp_registers_info
,
2035 "List of integer registers and their contents, for selected stack frame.\n\
2036 Register name as argument means describe only that register.");
2037 add_info ("all-registers", all_registers_info
,
2038 "List of all registers and their contents, for selected stack frame.\n\
2039 Register name as argument means describe only that register.");
2041 add_info ("program", program_info
,
2042 "Execution status of the program.");
2044 add_info ("float", float_info
,
2045 "Print the status of the floating point unit\n");
2047 inferior_environ
= make_environ ();
2048 init_environ (inferior_environ
);