1 /* Memory-access and commands for "inferior" process, for GDB.
3 Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994,
4 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
5 Free Software Foundation, Inc.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 59 Temple Place - Suite 330,
22 Boston, MA 02111-1307, USA. */
26 #include "gdb_string.h"
40 #include "completer.h"
42 #include "event-top.h"
43 #include "parser-defs.h"
45 #include "reggroups.h"
48 #include "gdb_assert.h"
50 /* Functions exported for general use, in inferior.h: */
52 void all_registers_info (char *, int);
54 void registers_info (char *, int);
56 void nexti_command (char *, int);
58 void stepi_command (char *, int);
60 void continue_command (char *, int);
62 void interrupt_target_command (char *args
, int from_tty
);
64 /* Local functions: */
66 static void nofp_registers_info (char *, int);
68 static void print_return_value (int struct_return
, struct type
*value_type
);
70 static void finish_command_continuation (struct continuation_arg
*);
72 static void until_next_command (int);
74 static void until_command (char *, int);
76 static void path_info (char *, int);
78 static void path_command (char *, int);
80 static void unset_command (char *, int);
82 static void float_info (char *, int);
84 static void detach_command (char *, int);
86 static void disconnect_command (char *, int);
88 static void unset_environment_command (char *, int);
90 static void set_environment_command (char *, int);
92 static void environment_info (char *, int);
94 static void program_info (char *, int);
96 static void finish_command (char *, int);
98 static void signal_command (char *, int);
100 static void jump_command (char *, int);
102 static void step_1 (int, int, char *);
103 static void step_once (int skip_subroutines
, int single_inst
, int count
);
104 static void step_1_continuation (struct continuation_arg
*arg
);
106 static void next_command (char *, int);
108 static void step_command (char *, int);
110 static void run_command (char *, int);
112 static void run_no_args_command (char *args
, int from_tty
);
114 static void go_command (char *line_no
, int from_tty
);
116 static int strip_bg_char (char **);
118 void _initialize_infcmd (void);
120 #define GO_USAGE "Usage: go <location>\n"
122 #define ERROR_NO_INFERIOR \
123 if (!target_has_execution) error (_("The program is not being run."));
125 /* String containing arguments to give to the program, separated by spaces.
126 Empty string (pointer to '\0') means no args. */
128 static char *inferior_args
;
130 /* The inferior arguments as a vector. If INFERIOR_ARGC is nonzero,
131 then we must compute INFERIOR_ARGS from this (via the target). */
133 static int inferior_argc
;
134 static char **inferior_argv
;
136 /* File name for default use for standard in/out in the inferior. */
138 char *inferior_io_terminal
;
140 /* Pid of our debugged inferior, or 0 if no inferior now.
141 Since various parts of infrun.c test this to see whether there is a program
142 being debugged it should be nonzero (currently 3 is used) for remote
145 ptid_t inferior_ptid
;
147 /* Last signal that the inferior received (why it stopped). */
149 enum target_signal stop_signal
;
151 /* Address at which inferior stopped. */
155 /* Chain containing status of breakpoint(s) that we have stopped at. */
159 /* Flag indicating that a command has proceeded the inferior past the
160 current breakpoint. */
162 int breakpoint_proceeded
;
164 /* Nonzero if stopped due to a step command. */
168 /* Nonzero if stopped due to completion of a stack dummy routine. */
170 int stop_stack_dummy
;
172 /* Nonzero if stopped due to a random (unexpected) signal in inferior
175 int stopped_by_random_signal
;
177 /* Range to single step within.
178 If this is nonzero, respond to a single-step signal
179 by continuing to step if the pc is in this range. */
181 CORE_ADDR step_range_start
; /* Inclusive */
182 CORE_ADDR step_range_end
; /* Exclusive */
184 /* Stack frame address as of when stepping command was issued.
185 This is how we know when we step into a subroutine call,
186 and how to set the frame for the breakpoint used to step out. */
188 struct frame_id step_frame_id
;
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. */
263 construct_inferior_arguments (struct gdbarch
*gdbarch
, int argc
, char **argv
)
267 if (STARTUP_WITH_SHELL
)
269 /* This holds all the characters considered special to the
270 typical Unix shells. We include `^' because the SunOS
271 /bin/sh treats it as a synonym for `|'. */
272 char *special
= "\"!#$&*()\\|[]{}<>?'\"`~^; \t\n";
277 /* We over-compute the size. It shouldn't matter. */
278 for (i
= 0; i
< argc
; ++i
)
279 length
+= 2 * strlen (argv
[i
]) + 1 + 2 * (argv
[i
][0] == '\0');
281 result
= (char *) xmalloc (length
);
284 for (i
= 0; i
< argc
; ++i
)
289 /* Need to handle empty arguments specially. */
290 if (argv
[i
][0] == '\0')
297 for (cp
= argv
[i
]; *cp
; ++cp
)
299 if (strchr (special
, *cp
) != NULL
)
309 /* In this case we can't handle arguments that contain spaces,
310 tabs, or newlines -- see breakup_args(). */
314 for (i
= 0; i
< argc
; ++i
)
316 char *cp
= strchr (argv
[i
], ' ');
318 cp
= strchr (argv
[i
], '\t');
320 cp
= strchr (argv
[i
], '\n');
322 error (_("can't handle command-line argument containing whitespace"));
323 length
+= strlen (argv
[i
]) + 1;
326 result
= (char *) xmalloc (length
);
328 for (i
= 0; i
< argc
; ++i
)
331 strcat (result
, " ");
332 strcat (result
, argv
[i
]);
340 /* This function detects whether or not a '&' character (indicating
341 background execution) has been added as *the last* of the arguments ARGS
342 of a command. If it has, it removes it and returns 1. Otherwise it
343 does nothing and returns 0. */
345 strip_bg_char (char **args
)
349 p
= strchr (*args
, '&');
353 if (p
== (*args
+ strlen (*args
) - 1))
355 if (strlen (*args
) > 1)
359 while (*p
== ' ' || *p
== '\t');
371 tty_command (char *file
, int from_tty
)
374 error_no_arg ("terminal name for running target process");
376 inferior_io_terminal
= savestring (file
, strlen (file
));
379 /* Kill the inferior if already running. This function is designed
380 to be called when we are about to start the execution of the program
381 from the beginning. Ask the user to confirm that he wants to restart
382 the program being debugged when FROM_TTY is non-null. */
385 kill_if_already_running (int from_tty
)
387 if (! ptid_equal (inferior_ptid
, null_ptid
) && target_has_execution
)
390 && !query ("The program being debugged has been started already.\n\
391 Start it from the beginning? "))
392 error (_("Program not restarted."));
394 #if defined(SOLIB_RESTART)
397 init_wait_for_inferior ();
402 run_command (char *args
, int from_tty
)
408 kill_if_already_running (from_tty
);
409 clear_breakpoint_hit_counts ();
411 /* Purge old solib objfiles. */
412 objfile_purge_solibs ();
414 do_run_cleanups (NULL
);
416 /* The comment here used to read, "The exec file is re-read every
417 time we do a generic_mourn_inferior, so we just have to worry
418 about the symbol file." The `generic_mourn_inferior' function
419 gets called whenever the program exits. However, suppose the
420 program exits, and *then* the executable file changes? We need
421 to check again here. Since reopen_exec_file doesn't do anything
422 if the timestamp hasn't changed, I don't see the harm. */
426 exec_file
= (char *) get_exec_file (0);
428 /* We keep symbols from add-symbol-file, on the grounds that the
429 user might want to add some symbols before running the program
430 (right?). But sometimes (dynamic loading where the user manually
431 introduces the new symbols with add-symbol-file), the code which
432 the symbols describe does not persist between runs. Currently
433 the user has to manually nuke all symbols between runs if they
434 want them to go away (PR 2207). This is probably reasonable. */
438 if (target_can_async_p ())
439 async_disable_stdin ();
443 int async_exec
= strip_bg_char (&args
);
445 /* If we get a request for running in the bg but the target
446 doesn't support it, error out. */
447 if (async_exec
&& !target_can_async_p ())
448 error (_("Asynchronous execution not supported on this target."));
450 /* If we don't get a request of running in the bg, then we need
451 to simulate synchronous (fg) execution. */
452 if (!async_exec
&& target_can_async_p ())
454 /* Simulate synchronous execution */
455 async_disable_stdin ();
458 /* If there were other args, beside '&', process them. */
461 char *old_args
= set_inferior_args (xstrdup (args
));
468 ui_out_field_string (uiout
, NULL
, "Starting program");
469 ui_out_text (uiout
, ": ");
471 ui_out_field_string (uiout
, "execfile", exec_file
);
472 ui_out_spaces (uiout
, 1);
473 /* We call get_inferior_args() because we might need to compute
475 ui_out_field_string (uiout
, "infargs", get_inferior_args ());
476 ui_out_text (uiout
, "\n");
477 ui_out_flush (uiout
);
480 /* We call get_inferior_args() because we might need to compute
482 target_create_inferior (exec_file
, get_inferior_args (),
483 environ_vector (inferior_environ
), from_tty
);
488 run_no_args_command (char *args
, int from_tty
)
490 char *old_args
= set_inferior_args (xstrdup (""));
495 /* Start the execution of the program up until the beginning of the main
499 start_command (char *args
, int from_tty
)
501 /* Some languages such as Ada need to search inside the program
502 minimal symbols for the location where to put the temporary
503 breakpoint before starting. */
504 if (!have_minimal_symbols ())
505 error (_("No symbol table loaded. Use the \"file\" command."));
507 /* If the inferior is already running, we want to ask the user if we
508 should restart it or not before we insert the temporary breakpoint.
509 This makes sure that this command doesn't have any side effect if
510 the user changes its mind. */
511 kill_if_already_running (from_tty
);
513 /* Insert the temporary breakpoint, and run... */
514 tbreak_command (main_name (), 0);
515 run_command (args
, from_tty
);
519 continue_command (char *proc_count_exp
, int from_tty
)
524 /* Find out whether we must run in the background. */
525 if (proc_count_exp
!= NULL
)
526 async_exec
= strip_bg_char (&proc_count_exp
);
528 /* If we must run in the background, but the target can't do it,
530 if (async_exec
&& !target_can_async_p ())
531 error (_("Asynchronous execution not supported on this target."));
533 /* If we are not asked to run in the bg, then prepare to run in the
534 foreground, synchronously. */
535 if (!async_exec
&& target_can_async_p ())
537 /* Simulate synchronous execution */
538 async_disable_stdin ();
541 /* If have argument (besides '&'), set proceed count of breakpoint
543 if (proc_count_exp
!= NULL
)
545 bpstat bs
= stop_bpstat
;
546 int num
= bpstat_num (&bs
);
547 if (num
== 0 && from_tty
)
550 ("Not stopped at any breakpoint; argument ignored.\n");
554 set_ignore_count (num
,
555 parse_and_eval_long (proc_count_exp
) - 1,
557 /* set_ignore_count prints a message ending with a period.
558 So print two spaces before "Continuing.". */
560 printf_filtered (" ");
561 num
= bpstat_num (&bs
);
566 printf_filtered ("Continuing.\n");
568 clear_proceed_status ();
570 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
573 /* Step until outside of current statement. */
576 step_command (char *count_string
, int from_tty
)
578 step_1 (0, 0, count_string
);
581 /* Likewise, but skip over subroutine calls as if single instructions. */
584 next_command (char *count_string
, int from_tty
)
586 step_1 (1, 0, count_string
);
589 /* Likewise, but step only one instruction. */
592 stepi_command (char *count_string
, int from_tty
)
594 step_1 (0, 1, count_string
);
598 nexti_command (char *count_string
, int from_tty
)
600 step_1 (1, 1, count_string
);
604 disable_longjmp_breakpoint_cleanup (void *ignore
)
606 disable_longjmp_breakpoint ();
610 step_1 (int skip_subroutines
, int single_inst
, char *count_string
)
613 struct frame_info
*frame
;
614 struct cleanup
*cleanups
= 0;
620 async_exec
= strip_bg_char (&count_string
);
622 /* If we get a request for running in the bg but the target
623 doesn't support it, error out. */
624 if (async_exec
&& !target_can_async_p ())
625 error (_("Asynchronous execution not supported on this target."));
627 /* If we don't get a request of running in the bg, then we need
628 to simulate synchronous (fg) execution. */
629 if (!async_exec
&& target_can_async_p ())
631 /* Simulate synchronous execution */
632 async_disable_stdin ();
635 count
= count_string
? parse_and_eval_long (count_string
) : 1;
637 if (!single_inst
|| skip_subroutines
) /* leave si command alone */
639 enable_longjmp_breakpoint ();
640 if (!target_can_async_p ())
641 cleanups
= make_cleanup (disable_longjmp_breakpoint_cleanup
, 0 /*ignore*/);
643 make_exec_cleanup (disable_longjmp_breakpoint_cleanup
, 0 /*ignore*/);
646 /* In synchronous case, all is well, just use the regular for loop. */
647 if (!target_can_async_p ())
649 for (; count
> 0; count
--)
651 clear_proceed_status ();
653 frame
= get_current_frame ();
654 if (!frame
) /* Avoid coredump here. Why tho? */
655 error (_("No current frame"));
656 step_frame_id
= get_frame_id (frame
);
660 find_pc_line_pc_range (stop_pc
, &step_range_start
, &step_range_end
);
661 if (step_range_end
== 0)
664 if (find_pc_partial_function (stop_pc
, &name
, &step_range_start
,
665 &step_range_end
) == 0)
666 error (_("Cannot find bounds of current function"));
668 target_terminal_ours ();
670 Single stepping until exit from function %s, \n\
671 which has no line number information.\n", name
);
676 /* Say we are stepping, but stop after one insn whatever it does. */
677 step_range_start
= step_range_end
= 1;
678 if (!skip_subroutines
)
680 Don't step over function calls, not even to functions lacking
682 step_over_calls
= STEP_OVER_NONE
;
685 if (skip_subroutines
)
686 step_over_calls
= STEP_OVER_ALL
;
688 step_multi
= (count
> 1);
689 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
695 if (!single_inst
|| skip_subroutines
)
696 do_cleanups (cleanups
);
699 /* In case of asynchronous target things get complicated, do only
700 one step for now, before returning control to the event loop. Let
701 the continuation figure out how many other steps we need to do,
702 and handle them one at the time, through step_once(). */
705 if (target_can_async_p ())
706 step_once (skip_subroutines
, single_inst
, count
);
710 /* Called after we are done with one step operation, to check whether
711 we need to step again, before we print the prompt and return control
712 to the user. If count is > 1, we will need to do one more call to
713 proceed(), via step_once(). Basically it is like step_once and
714 step_1_continuation are co-recursive. */
716 step_1_continuation (struct continuation_arg
*arg
)
719 int skip_subroutines
;
722 skip_subroutines
= arg
->data
.integer
;
723 single_inst
= arg
->next
->data
.integer
;
724 count
= arg
->next
->next
->data
.integer
;
727 step_once (skip_subroutines
, single_inst
, count
- 1);
729 if (!single_inst
|| skip_subroutines
)
730 do_exec_cleanups (ALL_CLEANUPS
);
733 /* Do just one step operation. If count >1 we will have to set up a
734 continuation to be done after the target stops (after this one
735 step). This is useful to implement the 'step n' kind of commands, in
736 case of asynchronous targets. We had to split step_1 into two parts,
737 one to be done before proceed() and one afterwards. This function is
738 called in case of step n with n>1, after the first step operation has
741 step_once (int skip_subroutines
, int single_inst
, int count
)
743 struct continuation_arg
*arg1
;
744 struct continuation_arg
*arg2
;
745 struct continuation_arg
*arg3
;
746 struct frame_info
*frame
;
750 clear_proceed_status ();
752 frame
= get_current_frame ();
753 if (!frame
) /* Avoid coredump here. Why tho? */
754 error (_("No current frame"));
755 step_frame_id
= get_frame_id (frame
);
759 find_pc_line_pc_range (stop_pc
, &step_range_start
, &step_range_end
);
761 /* If we have no line info, switch to stepi mode. */
762 if (step_range_end
== 0 && step_stop_if_no_debug
)
764 step_range_start
= step_range_end
= 1;
766 else if (step_range_end
== 0)
769 if (find_pc_partial_function (stop_pc
, &name
, &step_range_start
,
770 &step_range_end
) == 0)
771 error (_("Cannot find bounds of current function"));
773 target_terminal_ours ();
775 Single stepping until exit from function %s, \n\
776 which has no line number information.\n", name
);
781 /* Say we are stepping, but stop after one insn whatever it does. */
782 step_range_start
= step_range_end
= 1;
783 if (!skip_subroutines
)
785 Don't step over function calls, not even to functions lacking
787 step_over_calls
= STEP_OVER_NONE
;
790 if (skip_subroutines
)
791 step_over_calls
= STEP_OVER_ALL
;
793 step_multi
= (count
> 1);
795 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
797 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
799 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
801 arg1
->data
.integer
= skip_subroutines
;
803 arg2
->data
.integer
= single_inst
;
805 arg3
->data
.integer
= count
;
806 add_intermediate_continuation (step_1_continuation
, arg1
);
807 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
812 /* Continue program at specified address. */
815 jump_command (char *arg
, int from_tty
)
818 struct symtabs_and_lines sals
;
819 struct symtab_and_line sal
;
826 /* Find out whether we must run in the background. */
828 async_exec
= strip_bg_char (&arg
);
830 /* If we must run in the background, but the target can't do it,
832 if (async_exec
&& !target_can_async_p ())
833 error (_("Asynchronous execution not supported on this target."));
835 /* If we are not asked to run in the bg, then prepare to run in the
836 foreground, synchronously. */
837 if (!async_exec
&& target_can_async_p ())
839 /* Simulate synchronous execution */
840 async_disable_stdin ();
844 error_no_arg ("starting address");
846 sals
= decode_line_spec_1 (arg
, 1);
849 error (_("Unreasonable jump request"));
855 if (sal
.symtab
== 0 && sal
.pc
== 0)
856 error (_("No source file has been specified."));
858 resolve_sal_pc (&sal
); /* May error out */
860 /* See if we are trying to jump to another function. */
861 fn
= get_frame_function (get_current_frame ());
862 sfn
= find_pc_function (sal
.pc
);
863 if (fn
!= NULL
&& sfn
!= fn
)
865 if (!query ("Line %d is not in `%s'. Jump anyway? ", sal
.line
,
866 SYMBOL_PRINT_NAME (fn
)))
868 error (_("Not confirmed."));
875 fixup_symbol_section (sfn
, 0);
876 if (section_is_overlay (SYMBOL_BFD_SECTION (sfn
)) &&
877 !section_is_mapped (SYMBOL_BFD_SECTION (sfn
)))
879 if (!query ("WARNING!!! Destination is in unmapped overlay! Jump anyway? "))
881 error (_("Not confirmed."));
891 printf_filtered ("Continuing at ");
892 print_address_numeric (addr
, 1, gdb_stdout
);
893 printf_filtered (".\n");
896 clear_proceed_status ();
897 proceed (addr
, TARGET_SIGNAL_0
, 0);
901 /* Go to line or address in current procedure */
903 go_command (char *line_no
, int from_tty
)
905 if (line_no
== (char *) NULL
|| !*line_no
)
906 printf_filtered (GO_USAGE
);
909 tbreak_command (line_no
, from_tty
);
910 jump_command (line_no
, from_tty
);
915 /* Continue program giving it specified signal. */
918 signal_command (char *signum_exp
, int from_tty
)
920 enum target_signal oursig
;
922 dont_repeat (); /* Too dangerous. */
926 error_no_arg ("signal number");
928 /* It would be even slicker to make signal names be valid expressions,
929 (the type could be "enum $signal" or some such), then the user could
930 assign them to convenience variables. */
931 oursig
= target_signal_from_name (signum_exp
);
933 if (oursig
== TARGET_SIGNAL_UNKNOWN
)
935 /* No, try numeric. */
936 int num
= parse_and_eval_long (signum_exp
);
939 oursig
= TARGET_SIGNAL_0
;
941 oursig
= target_signal_from_command (num
);
946 if (oursig
== TARGET_SIGNAL_0
)
947 printf_filtered ("Continuing with no signal.\n");
949 printf_filtered ("Continuing with signal %s.\n",
950 target_signal_to_name (oursig
));
953 clear_proceed_status ();
954 /* "signal 0" should not get stuck if we are stopped at a breakpoint.
955 FIXME: Neither should "signal foo" but when I tried passing
956 (CORE_ADDR)-1 unconditionally I got a testsuite failure which I haven't
957 tried to track down yet. */
958 proceed (oursig
== TARGET_SIGNAL_0
? (CORE_ADDR
) -1 : stop_pc
, oursig
, 0);
961 /* Proceed until we reach a different source line with pc greater than
962 our current one or exit the function. We skip calls in both cases.
964 Note that eventually this command should probably be changed so
965 that only source lines are printed out when we hit the breakpoint
966 we set. This may involve changes to wait_for_inferior and the
967 proceed status code. */
970 until_next_command (int from_tty
)
972 struct frame_info
*frame
;
975 struct symtab_and_line sal
;
977 clear_proceed_status ();
979 frame
= get_current_frame ();
981 /* Step until either exited from this function or greater
982 than the current line (if in symbolic section) or pc (if
986 func
= find_pc_function (pc
);
990 struct minimal_symbol
*msymbol
= lookup_minimal_symbol_by_pc (pc
);
993 error (_("Execution is not within a known function."));
995 step_range_start
= SYMBOL_VALUE_ADDRESS (msymbol
);
1000 sal
= find_pc_line (pc
, 0);
1002 step_range_start
= BLOCK_START (SYMBOL_BLOCK_VALUE (func
));
1003 step_range_end
= sal
.end
;
1006 step_over_calls
= STEP_OVER_ALL
;
1007 step_frame_id
= get_frame_id (frame
);
1009 step_multi
= 0; /* Only one call to proceed */
1011 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
1015 until_command (char *arg
, int from_tty
)
1019 if (!target_has_execution
)
1020 error (_("The program is not running."));
1022 /* Find out whether we must run in the background. */
1024 async_exec
= strip_bg_char (&arg
);
1026 /* If we must run in the background, but the target can't do it,
1028 if (async_exec
&& !target_can_async_p ())
1029 error (_("Asynchronous execution not supported on this target."));
1031 /* If we are not asked to run in the bg, then prepare to run in the
1032 foreground, synchronously. */
1033 if (!async_exec
&& target_can_async_p ())
1035 /* Simulate synchronous execution */
1036 async_disable_stdin ();
1040 until_break_command (arg
, from_tty
, 0);
1042 until_next_command (from_tty
);
1046 advance_command (char *arg
, int from_tty
)
1050 if (!target_has_execution
)
1051 error (_("The program is not running."));
1054 error_no_arg ("a location");
1056 /* Find out whether we must run in the background. */
1058 async_exec
= strip_bg_char (&arg
);
1060 /* If we must run in the background, but the target can't do it,
1062 if (async_exec
&& !target_can_async_p ())
1063 error (_("Asynchronous execution not supported on this target."));
1065 /* If we are not asked to run in the bg, then prepare to run in the
1066 foreground, synchronously. */
1067 if (!async_exec
&& target_can_async_p ())
1069 /* Simulate synchronous execution. */
1070 async_disable_stdin ();
1073 until_break_command (arg
, from_tty
, 1);
1076 /* Print the result of a function at the end of a 'finish' command. */
1079 print_return_value (int struct_return
, struct type
*value_type
)
1081 struct gdbarch
*gdbarch
= current_gdbarch
;
1082 struct cleanup
*old_chain
;
1083 struct ui_stream
*stb
;
1084 struct value
*value
;
1086 gdb_assert (TYPE_CODE (value_type
) != TYPE_CODE_VOID
);
1088 /* FIXME: 2003-09-27: When returning from a nested inferior function
1089 call, it's possible (with no help from the architecture vector)
1090 to locate and return/print a "struct return" value. This is just
1091 a more complicated case of what is already being done in in the
1092 inferior function call code. In fact, when inferior function
1093 calls are made async, this will likely be made the norm. */
1095 switch (gdbarch_return_value (gdbarch
, value_type
, NULL
, NULL
, NULL
))
1097 case RETURN_VALUE_REGISTER_CONVENTION
:
1098 case RETURN_VALUE_ABI_RETURNS_ADDRESS
:
1099 value
= allocate_value (value_type
);
1100 CHECK_TYPEDEF (value_type
);
1101 gdbarch_return_value (current_gdbarch
, value_type
, stop_registers
,
1102 value_contents_raw (value
), NULL
);
1104 case RETURN_VALUE_STRUCT_CONVENTION
:
1108 internal_error (__FILE__
, __LINE__
, "bad switch");
1114 stb
= ui_out_stream_new (uiout
);
1115 old_chain
= make_cleanup_ui_out_stream_delete (stb
);
1116 ui_out_text (uiout
, "Value returned is ");
1117 ui_out_field_fmt (uiout
, "gdb-result-var", "$%d",
1118 record_latest_value (value
));
1119 ui_out_text (uiout
, " = ");
1120 value_print (value
, stb
->stream
, 0, Val_no_prettyprint
);
1121 ui_out_field_stream (uiout
, "return-value", stb
);
1122 ui_out_text (uiout
, "\n");
1123 do_cleanups (old_chain
);
1127 ui_out_text (uiout
, "Value returned has type: ");
1128 ui_out_field_string (uiout
, "return-type", TYPE_NAME (value_type
));
1129 ui_out_text (uiout
, ".");
1130 ui_out_text (uiout
, " Cannot determine contents\n");
1134 /* Stuff that needs to be done by the finish command after the target
1135 has stopped. In asynchronous mode, we wait for the target to stop
1136 in the call to poll or select in the event loop, so it is
1137 impossible to do all the stuff as part of the finish_command
1138 function itself. The only chance we have to complete this command
1139 is in fetch_inferior_event, which is called by the event loop as
1140 soon as it detects that the target has stopped. This function is
1141 called via the cmd_continuation pointer. */
1144 finish_command_continuation (struct continuation_arg
*arg
)
1146 struct symbol
*function
;
1147 struct breakpoint
*breakpoint
;
1148 struct cleanup
*cleanups
;
1150 breakpoint
= (struct breakpoint
*) arg
->data
.pointer
;
1151 function
= (struct symbol
*) arg
->next
->data
.pointer
;
1152 cleanups
= (struct cleanup
*) arg
->next
->next
->data
.pointer
;
1154 if (bpstat_find_breakpoint (stop_bpstat
, breakpoint
) != NULL
1155 && function
!= NULL
)
1157 struct type
*value_type
;
1161 value_type
= TYPE_TARGET_TYPE (SYMBOL_TYPE (function
));
1163 internal_error (__FILE__
, __LINE__
,
1164 "finish_command: function has no target type");
1166 if (TYPE_CODE (value_type
) == TYPE_CODE_VOID
)
1168 do_exec_cleanups (cleanups
);
1172 CHECK_TYPEDEF (value_type
);
1173 gcc_compiled
= BLOCK_GCC_COMPILED (SYMBOL_BLOCK_VALUE (function
));
1174 struct_return
= using_struct_return (value_type
, gcc_compiled
);
1176 print_return_value (struct_return
, value_type
);
1179 do_exec_cleanups (cleanups
);
1182 /* "finish": Set a temporary breakpoint at the place the selected
1183 frame will return to, then continue. */
1186 finish_command (char *arg
, int from_tty
)
1188 struct symtab_and_line sal
;
1189 struct frame_info
*frame
;
1190 struct symbol
*function
;
1191 struct breakpoint
*breakpoint
;
1192 struct cleanup
*old_chain
;
1193 struct continuation_arg
*arg1
, *arg2
, *arg3
;
1197 /* Find out whether we must run in the background. */
1199 async_exec
= strip_bg_char (&arg
);
1201 /* If we must run in the background, but the target can't do it,
1203 if (async_exec
&& !target_can_async_p ())
1204 error (_("Asynchronous execution not supported on this target."));
1206 /* If we are not asked to run in the bg, then prepare to run in the
1207 foreground, synchronously. */
1208 if (!async_exec
&& target_can_async_p ())
1210 /* Simulate synchronous execution. */
1211 async_disable_stdin ();
1215 error (_("The \"finish\" command does not take any arguments."));
1216 if (!target_has_execution
)
1217 error (_("The program is not running."));
1218 if (deprecated_selected_frame
== NULL
)
1219 error (_("No selected frame."));
1221 frame
= get_prev_frame (deprecated_selected_frame
);
1223 error (_("\"finish\" not meaningful in the outermost frame."));
1225 clear_proceed_status ();
1227 sal
= find_pc_line (get_frame_pc (frame
), 0);
1228 sal
.pc
= get_frame_pc (frame
);
1230 breakpoint
= set_momentary_breakpoint (sal
, get_frame_id (frame
), bp_finish
);
1232 if (!target_can_async_p ())
1233 old_chain
= make_cleanup_delete_breakpoint (breakpoint
);
1235 old_chain
= make_exec_cleanup_delete_breakpoint (breakpoint
);
1237 /* Find the function we will return from. */
1239 function
= find_pc_function (get_frame_pc (deprecated_selected_frame
));
1241 /* Print info on the selected frame, including level number but not
1245 printf_filtered ("Run till exit from ");
1246 print_stack_frame (get_selected_frame (NULL
), 1, LOCATION
);
1249 /* If running asynchronously and the target support asynchronous
1250 execution, set things up for the rest of the finish command to be
1251 completed later on, when gdb has detected that the target has
1252 stopped, in fetch_inferior_event. */
1253 if (target_can_async_p ())
1256 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
1258 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
1260 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
1264 arg1
->data
.pointer
= breakpoint
;
1265 arg2
->data
.pointer
= function
;
1266 arg3
->data
.pointer
= old_chain
;
1267 add_continuation (finish_command_continuation
, arg1
);
1270 proceed_to_finish
= 1; /* We want stop_registers, please... */
1271 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
1273 /* Do this only if not running asynchronously or if the target
1274 cannot do async execution. Otherwise, complete this command when
1275 the target actually stops, in fetch_inferior_event. */
1276 if (!target_can_async_p ())
1278 /* Did we stop at our breakpoint? */
1279 if (bpstat_find_breakpoint (stop_bpstat
, breakpoint
) != NULL
1280 && function
!= NULL
)
1282 struct type
*value_type
;
1286 value_type
= TYPE_TARGET_TYPE (SYMBOL_TYPE (function
));
1288 internal_error (__FILE__
, __LINE__
,
1289 "finish_command: function has no target type");
1291 /* FIXME: Shouldn't we do the cleanups before returning? */
1292 if (TYPE_CODE (value_type
) == TYPE_CODE_VOID
)
1295 CHECK_TYPEDEF (value_type
);
1296 gcc_compiled
= BLOCK_GCC_COMPILED (SYMBOL_BLOCK_VALUE (function
));
1297 struct_return
= using_struct_return (value_type
, gcc_compiled
);
1299 print_return_value (struct_return
, value_type
);
1302 do_cleanups (old_chain
);
1308 program_info (char *args
, int from_tty
)
1310 bpstat bs
= stop_bpstat
;
1311 int num
= bpstat_num (&bs
);
1313 if (!target_has_execution
)
1315 printf_filtered ("The program being debugged is not being run.\n");
1319 target_files_info ();
1320 printf_filtered ("Program stopped at %s.\n",
1321 hex_string ((unsigned long) stop_pc
));
1323 printf_filtered ("It stopped after being stepped.\n");
1326 /* There may be several breakpoints in the same place, so this
1327 isn't as strange as it seems. */
1332 printf_filtered ("It stopped at a breakpoint that has ");
1333 printf_filtered ("since been deleted.\n");
1336 printf_filtered ("It stopped at breakpoint %d.\n", num
);
1337 num
= bpstat_num (&bs
);
1340 else if (stop_signal
!= TARGET_SIGNAL_0
)
1342 printf_filtered ("It stopped with signal %s, %s.\n",
1343 target_signal_to_name (stop_signal
),
1344 target_signal_to_string (stop_signal
));
1349 printf_filtered ("Type \"info stack\" or \"info registers\" ");
1350 printf_filtered ("for more information.\n");
1355 environment_info (char *var
, int from_tty
)
1359 char *val
= get_in_environ (inferior_environ
, var
);
1362 puts_filtered (var
);
1363 puts_filtered (" = ");
1364 puts_filtered (val
);
1365 puts_filtered ("\n");
1369 puts_filtered ("Environment variable \"");
1370 puts_filtered (var
);
1371 puts_filtered ("\" not defined.\n");
1376 char **vector
= environ_vector (inferior_environ
);
1379 puts_filtered (*vector
++);
1380 puts_filtered ("\n");
1386 set_environment_command (char *arg
, int from_tty
)
1388 char *p
, *val
, *var
;
1392 error_no_arg ("environment variable and value");
1394 /* Find seperation between variable name and value */
1395 p
= (char *) strchr (arg
, '=');
1396 val
= (char *) strchr (arg
, ' ');
1398 if (p
!= 0 && val
!= 0)
1400 /* We have both a space and an equals. If the space is before the
1401 equals, walk forward over the spaces til we see a nonspace
1402 (possibly the equals). */
1407 /* Now if the = is after the char following the spaces,
1408 take the char following the spaces. */
1412 else if (val
!= 0 && p
== 0)
1416 error_no_arg ("environment variable to set");
1418 if (p
== 0 || p
[1] == 0)
1422 p
= arg
+ strlen (arg
); /* So that savestring below will work */
1426 /* Not setting variable value to null */
1428 while (*val
== ' ' || *val
== '\t')
1432 while (p
!= arg
&& (p
[-1] == ' ' || p
[-1] == '\t'))
1435 var
= savestring (arg
, p
- arg
);
1438 printf_filtered ("Setting environment variable ");
1439 printf_filtered ("\"%s\" to null value.\n", var
);
1440 set_in_environ (inferior_environ
, var
, "");
1443 set_in_environ (inferior_environ
, var
, val
);
1448 unset_environment_command (char *var
, int from_tty
)
1452 /* If there is no argument, delete all environment variables.
1453 Ask for confirmation if reading from the terminal. */
1454 if (!from_tty
|| query ("Delete all environment variables? "))
1456 free_environ (inferior_environ
);
1457 inferior_environ
= make_environ ();
1461 unset_in_environ (inferior_environ
, var
);
1464 /* Handle the execution path (PATH variable) */
1466 static const char path_var_name
[] = "PATH";
1469 path_info (char *args
, int from_tty
)
1471 puts_filtered ("Executable and object file path: ");
1472 puts_filtered (get_in_environ (inferior_environ
, path_var_name
));
1473 puts_filtered ("\n");
1476 /* Add zero or more directories to the front of the execution path. */
1479 path_command (char *dirname
, int from_tty
)
1484 env
= get_in_environ (inferior_environ
, path_var_name
);
1485 /* Can be null if path is not set */
1488 exec_path
= xstrdup (env
);
1489 mod_path (dirname
, &exec_path
);
1490 set_in_environ (inferior_environ
, path_var_name
, exec_path
);
1493 path_info ((char *) NULL
, from_tty
);
1497 /* Print out the machine register regnum. If regnum is -1, print all
1498 registers (print_all == 1) or all non-float and non-vector
1499 registers (print_all == 0).
1501 For most machines, having all_registers_info() print the
1502 register(s) one per line is good enough. If a different format is
1503 required, (eg, for MIPS or Pyramid 90x, which both have lots of
1504 regs), or there is an existing convention for showing all the
1505 registers, define the architecture method PRINT_REGISTERS_INFO to
1506 provide that format. */
1509 default_print_registers_info (struct gdbarch
*gdbarch
,
1510 struct ui_file
*file
,
1511 struct frame_info
*frame
,
1512 int regnum
, int print_all
)
1515 const int numregs
= NUM_REGS
+ NUM_PSEUDO_REGS
;
1516 char buffer
[MAX_REGISTER_SIZE
];
1518 for (i
= 0; i
< numregs
; i
++)
1520 /* Decide between printing all regs, non-float / vector regs, or
1526 if (!gdbarch_register_reggroup_p (gdbarch
, i
, all_reggroup
))
1531 if (!gdbarch_register_reggroup_p (gdbarch
, i
, general_reggroup
))
1541 /* If the register name is empty, it is undefined for this
1542 processor, so don't display anything. */
1543 if (REGISTER_NAME (i
) == NULL
|| *(REGISTER_NAME (i
)) == '\0')
1546 fputs_filtered (REGISTER_NAME (i
), file
);
1547 print_spaces_filtered (15 - strlen (REGISTER_NAME (i
)), file
);
1549 /* Get the data in raw format. */
1550 if (! frame_register_read (frame
, i
, buffer
))
1552 fprintf_filtered (file
, "*value not available*\n");
1556 /* If virtual format is floating, print it that way, and in raw
1558 if (TYPE_CODE (register_type (current_gdbarch
, i
)) == TYPE_CODE_FLT
)
1562 val_print (register_type (current_gdbarch
, i
), buffer
, 0, 0,
1563 file
, 0, 1, 0, Val_pretty_default
);
1565 fprintf_filtered (file
, "\t(raw 0x");
1566 for (j
= 0; j
< register_size (current_gdbarch
, i
); j
++)
1569 if (TARGET_BYTE_ORDER
== BFD_ENDIAN_BIG
)
1572 idx
= register_size (current_gdbarch
, i
) - 1 - j
;
1573 fprintf_filtered (file
, "%02x", (unsigned char) buffer
[idx
]);
1575 fprintf_filtered (file
, ")");
1579 /* Print the register in hex. */
1580 val_print (register_type (current_gdbarch
, i
), buffer
, 0, 0,
1581 file
, 'x', 1, 0, Val_pretty_default
);
1582 /* If not a vector register, print it also according to its
1584 if (TYPE_VECTOR (register_type (current_gdbarch
, i
)) == 0)
1586 fprintf_filtered (file
, "\t");
1587 val_print (register_type (current_gdbarch
, i
), buffer
, 0, 0,
1588 file
, 0, 1, 0, Val_pretty_default
);
1592 fprintf_filtered (file
, "\n");
1597 registers_info (char *addr_exp
, int fpregs
)
1599 int regnum
, numregs
;
1602 if (!target_has_registers
)
1603 error (_("The program has no registers now."));
1604 if (deprecated_selected_frame
== NULL
)
1605 error (_("No selected frame."));
1609 gdbarch_print_registers_info (current_gdbarch
, gdb_stdout
,
1610 deprecated_selected_frame
, -1, fpregs
);
1614 while (*addr_exp
!= '\0')
1619 /* Keep skipping leading white space. */
1620 if (isspace ((*addr_exp
)))
1626 /* Discard any leading ``$''. Check that there is something
1627 resembling a register following it. */
1628 if (addr_exp
[0] == '$')
1630 if (isspace ((*addr_exp
)) || (*addr_exp
) == '\0')
1631 error (_("Missing register name"));
1633 /* Find the start/end of this register name/num/group. */
1635 while ((*addr_exp
) != '\0' && !isspace ((*addr_exp
)))
1639 /* Figure out what we've found and display it. */
1641 /* A register name? */
1643 int regnum
= frame_map_name_to_regnum (deprecated_selected_frame
,
1644 start
, end
- start
);
1647 gdbarch_print_registers_info (current_gdbarch
, gdb_stdout
,
1648 deprecated_selected_frame
, regnum
, fpregs
);
1653 /* A register number? (how portable is this one?). */
1656 int regnum
= strtol (start
, &endptr
, 0);
1659 && regnum
< NUM_REGS
+ NUM_PSEUDO_REGS
)
1661 gdbarch_print_registers_info (current_gdbarch
, gdb_stdout
,
1662 deprecated_selected_frame
, regnum
, fpregs
);
1667 /* A register group? */
1669 struct reggroup
*group
;
1670 for (group
= reggroup_next (current_gdbarch
, NULL
);
1672 group
= reggroup_next (current_gdbarch
, group
))
1674 /* Don't bother with a length check. Should the user
1675 enter a short register group name, go with the first
1676 group that matches. */
1677 if (strncmp (start
, reggroup_name (group
), end
- start
) == 0)
1683 for (regnum
= 0; regnum
< NUM_REGS
+ NUM_PSEUDO_REGS
; regnum
++)
1685 if (gdbarch_register_reggroup_p (current_gdbarch
, regnum
,
1687 gdbarch_print_registers_info (current_gdbarch
,
1688 gdb_stdout
, deprecated_selected_frame
,
1695 /* Nothing matched. */
1696 error (_("Invalid register `%.*s'"), (int) (end
- start
), start
);
1701 all_registers_info (char *addr_exp
, int from_tty
)
1703 registers_info (addr_exp
, 1);
1707 nofp_registers_info (char *addr_exp
, int from_tty
)
1709 registers_info (addr_exp
, 0);
1713 print_vector_info (struct gdbarch
*gdbarch
, struct ui_file
*file
,
1714 struct frame_info
*frame
, const char *args
)
1716 if (!target_has_registers
)
1717 error (_("The program has no registers now."));
1718 if (deprecated_selected_frame
== NULL
)
1719 error (_("No selected frame."));
1721 if (gdbarch_print_vector_info_p (gdbarch
))
1722 gdbarch_print_vector_info (gdbarch
, file
, frame
, args
);
1726 int printed_something
= 0;
1728 for (regnum
= 0; regnum
< NUM_REGS
+ NUM_PSEUDO_REGS
; regnum
++)
1730 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, vector_reggroup
))
1732 printed_something
= 1;
1733 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
1736 if (!printed_something
)
1737 fprintf_filtered (file
, "No vector information\n");
1742 vector_info (char *args
, int from_tty
)
1744 print_vector_info (current_gdbarch
, gdb_stdout
, deprecated_selected_frame
, args
);
1750 * Should save/restore the tty state since it might be that the
1751 * program to be debugged was started on this tty and it wants
1752 * the tty in some state other than what we want. If it's running
1753 * on another terminal or without a terminal, then saving and
1754 * restoring the tty state is a harmless no-op.
1755 * This only needs to be done if we are attaching to a process.
1760 takes a program started up outside of gdb and ``attaches'' to it.
1761 This stops it cold in its tracks and allows us to start debugging it.
1762 and wait for the trace-trap that results from attaching. */
1765 attach_command (char *args
, int from_tty
)
1768 char *full_exec_path
= NULL
;
1770 dont_repeat (); /* Not for the faint of heart */
1772 if (target_has_execution
)
1774 if (query ("A program is being debugged already. Kill it? "))
1777 error (_("Not killed."));
1780 /* Clear out solib state. Otherwise the solib state of the previous
1781 inferior might have survived and is entirely wrong for the new
1782 target. This has been observed on Linux using glibc 2.3. How to
1794 Cannot access memory at address 0xdeadbeef
1800 target_attach (args
, from_tty
);
1802 /* Set up the "saved terminal modes" of the inferior
1803 based on what modes we are starting it with. */
1804 target_terminal_init ();
1806 /* Set up execution context to know that we should return from
1807 wait_for_inferior as soon as the target reports a stop. */
1808 init_wait_for_inferior ();
1809 clear_proceed_status ();
1811 /* No traps are generated when attaching to inferior under Mach 3
1813 #ifndef ATTACH_NO_WAIT
1814 /* Careful here. See comments in inferior.h. Basically some OSes
1815 don't ignore SIGSTOPs on continue requests anymore. We need a
1816 way for handle_inferior_event to reset the stop_signal variable
1817 after an attach, and this is what STOP_QUIETLY_NO_SIGSTOP is for. */
1818 stop_soon
= STOP_QUIETLY_NO_SIGSTOP
;
1819 wait_for_inferior ();
1820 stop_soon
= NO_STOP_QUIETLY
;
1824 * If no exec file is yet known, try to determine it from the
1827 exec_file
= (char *) get_exec_file (0);
1830 exec_file
= target_pid_to_exec_file (PIDGET (inferior_ptid
));
1833 /* It's possible we don't have a full path, but rather just a
1834 filename. Some targets, such as HP-UX, don't provide the
1837 Attempt to qualify the filename against the source path.
1838 (If that fails, we'll just fall back on the original
1839 filename. Not much more we can do...)
1841 if (!source_full_path_of (exec_file
, &full_exec_path
))
1842 full_exec_path
= savestring (exec_file
, strlen (exec_file
));
1844 exec_file_attach (full_exec_path
, from_tty
);
1845 symbol_file_add_main (full_exec_path
, from_tty
);
1850 reopen_exec_file ();
1855 /* Add shared library symbols from the newly attached process, if any. */
1856 SOLIB_ADD ((char *) 0, from_tty
, ¤t_target
, auto_solib_add
);
1857 re_enable_breakpoints_in_shlibs ();
1860 /* Take any necessary post-attaching actions for this platform.
1862 target_post_attach (PIDGET (inferior_ptid
));
1864 /* Install inferior's terminal modes. */
1865 target_terminal_inferior ();
1869 if (deprecated_attach_hook
)
1870 deprecated_attach_hook ();
1875 * takes a program previously attached to and detaches it.
1876 * The program resumes execution and will no longer stop
1877 * on signals, etc. We better not have left any breakpoints
1878 * in the program or it'll die when it hits one. For this
1879 * to work, it may be necessary for the process to have been
1880 * previously attached. It *might* work if the program was
1881 * started via the normal ptrace (PTRACE_TRACEME).
1885 detach_command (char *args
, int from_tty
)
1887 dont_repeat (); /* Not for the faint of heart. */
1888 target_detach (args
, from_tty
);
1889 #if defined(SOLIB_RESTART)
1892 if (deprecated_detach_hook
)
1893 deprecated_detach_hook ();
1896 /* Disconnect from the current target without resuming it (leaving it
1897 waiting for a debugger).
1899 We'd better not have left any breakpoints in the program or the
1900 next debugger will get confused. Currently only supported for some
1901 remote targets, since the normal attach mechanisms don't work on
1902 stopped processes on some native platforms (e.g. GNU/Linux). */
1905 disconnect_command (char *args
, int from_tty
)
1907 dont_repeat (); /* Not for the faint of heart */
1908 target_disconnect (args
, from_tty
);
1909 #if defined(SOLIB_RESTART)
1912 if (deprecated_detach_hook
)
1913 deprecated_detach_hook ();
1916 /* Stop the execution of the target while running in async mode, in
1919 interrupt_target_command (char *args
, int from_tty
)
1921 if (target_can_async_p ())
1923 dont_repeat (); /* Not for the faint of heart */
1929 print_float_info (struct gdbarch
*gdbarch
, struct ui_file
*file
,
1930 struct frame_info
*frame
, const char *args
)
1932 if (!target_has_registers
)
1933 error (_("The program has no registers now."));
1934 if (deprecated_selected_frame
== NULL
)
1935 error (_("No selected frame."));
1937 if (gdbarch_print_float_info_p (gdbarch
))
1938 gdbarch_print_float_info (gdbarch
, file
, frame
, args
);
1942 int printed_something
= 0;
1944 for (regnum
= 0; regnum
< NUM_REGS
+ NUM_PSEUDO_REGS
; regnum
++)
1946 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, float_reggroup
))
1948 printed_something
= 1;
1949 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
1952 if (!printed_something
)
1953 fprintf_filtered (file
, "\
1954 No floating-point info available for this processor.\n");
1959 float_info (char *args
, int from_tty
)
1961 print_float_info (current_gdbarch
, gdb_stdout
,
1962 deprecated_selected_frame
, args
);
1966 unset_command (char *args
, int from_tty
)
1968 printf_filtered ("\"unset\" must be followed by the name of ");
1969 printf_filtered ("an unset subcommand.\n");
1970 help_list (unsetlist
, "unset ", -1, gdb_stdout
);
1974 _initialize_infcmd (void)
1976 struct cmd_list_element
*c
;
1978 c
= add_com ("tty", class_run
, tty_command
,
1979 "Set terminal for future runs of program being debugged.");
1980 set_cmd_completer (c
, filename_completer
);
1982 c
= add_set_cmd ("args", class_run
, var_string_noescape
,
1983 (char *) &inferior_args
,
1984 "Set argument list to give program being debugged when it is started.\n\
1985 Follow this command with any number of args, to be passed to the program.",
1987 set_cmd_completer (c
, filename_completer
);
1988 set_cmd_sfunc (c
, notice_args_set
);
1989 c
= deprecated_add_show_from_set (c
, &showlist
);
1990 set_cmd_sfunc (c
, notice_args_read
);
1993 ("environment", no_class
, environment_info
,
1994 "The environment to give the program, or one variable's value.\n\
1995 With an argument VAR, prints the value of environment variable VAR to\n\
1996 give the program being debugged. With no arguments, prints the entire\n\
1997 environment to be given to the program.", &showlist
);
1998 set_cmd_completer (c
, noop_completer
);
2000 add_prefix_cmd ("unset", no_class
, unset_command
,
2001 "Complement to certain \"set\" commands.",
2002 &unsetlist
, "unset ", 0, &cmdlist
);
2004 c
= add_cmd ("environment", class_run
, unset_environment_command
,
2005 "Cancel environment variable VAR for the program.\n\
2006 This does not affect the program until the next \"run\" command.",
2008 set_cmd_completer (c
, noop_completer
);
2010 c
= add_cmd ("environment", class_run
, set_environment_command
,
2011 "Set environment variable value to give the program.\n\
2012 Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\
2013 VALUES of environment variables are uninterpreted strings.\n\
2014 This does not affect the program until the next \"run\" command.",
2016 set_cmd_completer (c
, noop_completer
);
2018 c
= add_com ("path", class_files
, path_command
,
2019 "Add directory DIR(s) to beginning of search path for object files.\n\
2020 $cwd in the path means the current working directory.\n\
2021 This path is equivalent to the $PATH shell variable. It is a list of\n\
2022 directories, separated by colons. These directories are searched to find\n\
2023 fully linked executable files and separately compiled object files as needed.");
2024 set_cmd_completer (c
, filename_completer
);
2026 c
= add_cmd ("paths", no_class
, path_info
,
2027 "Current search path for finding object files.\n\
2028 $cwd in the path means the current working directory.\n\
2029 This path is equivalent to the $PATH shell variable. It is a list of\n\
2030 directories, separated by colons. These directories are searched to find\n\
2031 fully linked executable files and separately compiled object files as needed.",
2033 set_cmd_completer (c
, noop_completer
);
2035 add_com ("attach", class_run
, attach_command
,
2036 "Attach to a process or file outside of GDB.\n\
2037 This command attaches to another target, of the same type as your last\n\
2038 \"target\" command (\"info files\" will show your target stack).\n\
2039 The command may take as argument a process id or a device file.\n\
2040 For a process id, you must have permission to send the process a signal,\n\
2041 and it must have the same effective uid as the debugger.\n\
2042 When using \"attach\" with a process id, the debugger finds the\n\
2043 program running in the process, looking first in the current working\n\
2044 directory, or (if not found there) using the source file search path\n\
2045 (see the \"directory\" command). You can also use the \"file\" command\n\
2046 to specify the program, and to load its symbol table.");
2048 add_com ("detach", class_run
, detach_command
,
2049 "Detach a process or file previously attached.\n\
2050 If a process, it is no longer traced, and it continues its execution. If\n\
2051 you were debugging a file, the file is closed and gdb no longer accesses it.");
2053 add_com ("disconnect", class_run
, disconnect_command
,
2054 "Disconnect from a target.\n\
2055 The target will wait for another debugger to connect. Not available for\n\
2058 add_com ("signal", class_run
, signal_command
,
2059 "Continue program giving it signal specified by the argument.\n\
2060 An argument of \"0\" means continue program without giving it a signal.");
2062 add_com ("stepi", class_run
, stepi_command
,
2063 "Step one instruction exactly.\n\
2064 Argument N means do this N times (or till program stops for another reason).");
2065 add_com_alias ("si", "stepi", class_alias
, 0);
2067 add_com ("nexti", class_run
, nexti_command
,
2068 "Step one instruction, but proceed through subroutine calls.\n\
2069 Argument N means do this N times (or till program stops for another reason).");
2070 add_com_alias ("ni", "nexti", class_alias
, 0);
2072 add_com ("finish", class_run
, finish_command
,
2073 "Execute until selected stack frame returns.\n\
2074 Upon return, the value returned is printed and put in the value history.");
2076 add_com ("next", class_run
, next_command
,
2077 "Step program, proceeding through subroutine calls.\n\
2078 Like the \"step\" command as long as subroutine calls do not happen;\n\
2079 when they do, the call is treated as one instruction.\n\
2080 Argument N means do this N times (or till program stops for another reason).");
2081 add_com_alias ("n", "next", class_run
, 1);
2083 add_com_alias ("S", "next", class_run
, 1);
2085 add_com ("step", class_run
, step_command
,
2086 "Step program until it reaches a different source line.\n\
2087 Argument N means do this N times (or till program stops for another reason).");
2088 add_com_alias ("s", "step", class_run
, 1);
2090 c
= add_com ("until", class_run
, until_command
,
2091 "Execute until the program reaches a source line greater than the current\n\
2092 or a specified location (same args as break command) within the current frame.");
2093 set_cmd_completer (c
, location_completer
);
2094 add_com_alias ("u", "until", class_run
, 1);
2096 c
= add_com ("advance", class_run
, advance_command
,
2097 "Continue the program up to the given location (same form as args for break command).\n\
2098 Execution will also stop upon exit from the current stack frame.");
2099 set_cmd_completer (c
, location_completer
);
2101 c
= add_com ("jump", class_run
, jump_command
,
2102 "Continue program being debugged at specified line or address.\n\
2103 Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\
2104 for an address to start at.");
2105 set_cmd_completer (c
, location_completer
);
2109 c
= add_com ("go", class_run
, go_command
,
2110 "Usage: go <location>\n\
2111 Continue program being debugged, stopping at specified line or \n\
2113 Give as argument either LINENUM or *ADDR, where ADDR is an \n\
2114 expression for an address to start at.\n\
2115 This command is a combination of tbreak and jump.");
2116 set_cmd_completer (c
, location_completer
);
2120 add_com_alias ("g", "go", class_run
, 1);
2122 add_com ("continue", class_run
, continue_command
,
2123 "Continue program being debugged, after signal or breakpoint.\n\
2124 If proceeding from breakpoint, a number N may be used as an argument,\n\
2125 which means to set the ignore count of that breakpoint to N - 1 (so that\n\
2126 the breakpoint won't break until the Nth time it is reached).");
2127 add_com_alias ("c", "cont", class_run
, 1);
2128 add_com_alias ("fg", "cont", class_run
, 1);
2130 c
= add_com ("run", class_run
, run_command
,
2131 "Start debugged program. You may specify arguments to give it.\n\
2132 Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\
2133 Input and output redirection with \">\", \"<\", or \">>\" are also allowed.\n\n\
2134 With no arguments, uses arguments last specified (with \"run\" or \"set args\").\n\
2135 To cancel previous arguments and run with no arguments,\n\
2136 use \"set args\" without arguments.");
2137 set_cmd_completer (c
, filename_completer
);
2138 add_com_alias ("r", "run", class_run
, 1);
2140 add_com ("R", class_run
, run_no_args_command
,
2141 "Start debugged program with no arguments.");
2143 c
= add_com ("start", class_run
, start_command
,
2145 Run the debugged program until the beginning of the main procedure.\n\
2146 You may specify arguments to give to your program, just as with the\n\
2148 set_cmd_completer (c
, filename_completer
);
2150 add_com ("interrupt", class_run
, interrupt_target_command
,
2151 "Interrupt the execution of the debugged program.");
2153 add_info ("registers", nofp_registers_info
,
2154 "List of integer registers and their contents, for selected stack frame.\n\
2155 Register name as argument means describe only that register.");
2156 add_info_alias ("r", "registers", 1);
2159 add_com ("lr", class_info
, nofp_registers_info
,
2160 "List of integer registers and their contents, for selected stack frame.\n\
2161 Register name as argument means describe only that register.");
2162 add_info ("all-registers", all_registers_info
,
2163 "List of all registers and their contents, for selected stack frame.\n\
2164 Register name as argument means describe only that register.");
2166 add_info ("program", program_info
,
2167 "Execution status of the program.");
2169 add_info ("float", float_info
,
2170 "Print the status of the floating point unit\n");
2172 add_info ("vector", vector_info
,
2173 "Print the status of the vector unit\n");
2175 inferior_environ
= make_environ ();
2176 init_environ (inferior_environ
);