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 (struct ui_file
*file
, int from_tty
,
254 struct cmd_list_element
*c
, const char *value
)
256 deprecated_show_value_hack (file
, from_tty
, c
, value
);
257 /* Might compute the value. */
258 get_inferior_args ();
262 /* Compute command-line string given argument vector. This does the
263 same shell processing as fork_inferior. */
265 construct_inferior_arguments (struct gdbarch
*gdbarch
, int argc
, char **argv
)
269 if (STARTUP_WITH_SHELL
)
271 /* This holds all the characters considered special to the
272 typical Unix shells. We include `^' because the SunOS
273 /bin/sh treats it as a synonym for `|'. */
274 char *special
= "\"!#$&*()\\|[]{}<>?'\"`~^; \t\n";
279 /* We over-compute the size. It shouldn't matter. */
280 for (i
= 0; i
< argc
; ++i
)
281 length
+= 2 * strlen (argv
[i
]) + 1 + 2 * (argv
[i
][0] == '\0');
283 result
= (char *) xmalloc (length
);
286 for (i
= 0; i
< argc
; ++i
)
291 /* Need to handle empty arguments specially. */
292 if (argv
[i
][0] == '\0')
299 for (cp
= argv
[i
]; *cp
; ++cp
)
301 if (strchr (special
, *cp
) != NULL
)
311 /* In this case we can't handle arguments that contain spaces,
312 tabs, or newlines -- see breakup_args(). */
316 for (i
= 0; i
< argc
; ++i
)
318 char *cp
= strchr (argv
[i
], ' ');
320 cp
= strchr (argv
[i
], '\t');
322 cp
= strchr (argv
[i
], '\n');
324 error (_("can't handle command-line argument containing whitespace"));
325 length
+= strlen (argv
[i
]) + 1;
328 result
= (char *) xmalloc (length
);
330 for (i
= 0; i
< argc
; ++i
)
333 strcat (result
, " ");
334 strcat (result
, argv
[i
]);
342 /* This function detects whether or not a '&' character (indicating
343 background execution) has been added as *the last* of the arguments ARGS
344 of a command. If it has, it removes it and returns 1. Otherwise it
345 does nothing and returns 0. */
347 strip_bg_char (char **args
)
351 p
= strchr (*args
, '&');
355 if (p
== (*args
+ strlen (*args
) - 1))
357 if (strlen (*args
) > 1)
361 while (*p
== ' ' || *p
== '\t');
373 tty_command (char *file
, int from_tty
)
376 error_no_arg (_("terminal name for running target process"));
378 inferior_io_terminal
= savestring (file
, strlen (file
));
381 /* Kill the inferior if already running. This function is designed
382 to be called when we are about to start the execution of the program
383 from the beginning. Ask the user to confirm that he wants to restart
384 the program being debugged when FROM_TTY is non-null. */
387 kill_if_already_running (int from_tty
)
389 if (! ptid_equal (inferior_ptid
, null_ptid
) && target_has_execution
)
392 && !query ("The program being debugged has been started already.\n\
393 Start it from the beginning? "))
394 error (_("Program not restarted."));
396 #if defined(SOLIB_RESTART)
399 init_wait_for_inferior ();
404 run_command (char *args
, int from_tty
)
410 kill_if_already_running (from_tty
);
411 clear_breakpoint_hit_counts ();
413 /* Purge old solib objfiles. */
414 objfile_purge_solibs ();
416 do_run_cleanups (NULL
);
418 /* The comment here used to read, "The exec file is re-read every
419 time we do a generic_mourn_inferior, so we just have to worry
420 about the symbol file." The `generic_mourn_inferior' function
421 gets called whenever the program exits. However, suppose the
422 program exits, and *then* the executable file changes? We need
423 to check again here. Since reopen_exec_file doesn't do anything
424 if the timestamp hasn't changed, I don't see the harm. */
428 exec_file
= (char *) get_exec_file (0);
430 /* We keep symbols from add-symbol-file, on the grounds that the
431 user might want to add some symbols before running the program
432 (right?). But sometimes (dynamic loading where the user manually
433 introduces the new symbols with add-symbol-file), the code which
434 the symbols describe does not persist between runs. Currently
435 the user has to manually nuke all symbols between runs if they
436 want them to go away (PR 2207). This is probably reasonable. */
440 if (target_can_async_p ())
441 async_disable_stdin ();
445 int async_exec
= strip_bg_char (&args
);
447 /* If we get a request for running in the bg but the target
448 doesn't support it, error out. */
449 if (async_exec
&& !target_can_async_p ())
450 error (_("Asynchronous execution not supported on this target."));
452 /* If we don't get a request of running in the bg, then we need
453 to simulate synchronous (fg) execution. */
454 if (!async_exec
&& target_can_async_p ())
456 /* Simulate synchronous execution */
457 async_disable_stdin ();
460 /* If there were other args, beside '&', process them. */
463 char *old_args
= set_inferior_args (xstrdup (args
));
470 ui_out_field_string (uiout
, NULL
, "Starting program");
471 ui_out_text (uiout
, ": ");
473 ui_out_field_string (uiout
, "execfile", exec_file
);
474 ui_out_spaces (uiout
, 1);
475 /* We call get_inferior_args() because we might need to compute
477 ui_out_field_string (uiout
, "infargs", get_inferior_args ());
478 ui_out_text (uiout
, "\n");
479 ui_out_flush (uiout
);
482 /* We call get_inferior_args() because we might need to compute
484 target_create_inferior (exec_file
, get_inferior_args (),
485 environ_vector (inferior_environ
), from_tty
);
490 run_no_args_command (char *args
, int from_tty
)
492 char *old_args
= set_inferior_args (xstrdup (""));
497 /* Start the execution of the program up until the beginning of the main
501 start_command (char *args
, int from_tty
)
503 /* Some languages such as Ada need to search inside the program
504 minimal symbols for the location where to put the temporary
505 breakpoint before starting. */
506 if (!have_minimal_symbols ())
507 error (_("No symbol table loaded. Use the \"file\" command."));
509 /* If the inferior is already running, we want to ask the user if we
510 should restart it or not before we insert the temporary breakpoint.
511 This makes sure that this command doesn't have any side effect if
512 the user changes its mind. */
513 kill_if_already_running (from_tty
);
515 /* Insert the temporary breakpoint, and run... */
516 tbreak_command (main_name (), 0);
517 run_command (args
, from_tty
);
521 continue_command (char *proc_count_exp
, int from_tty
)
526 /* Find out whether we must run in the background. */
527 if (proc_count_exp
!= NULL
)
528 async_exec
= strip_bg_char (&proc_count_exp
);
530 /* If we must run in the background, but the target can't do it,
532 if (async_exec
&& !target_can_async_p ())
533 error (_("Asynchronous execution not supported on this target."));
535 /* If we are not asked to run in the bg, then prepare to run in the
536 foreground, synchronously. */
537 if (!async_exec
&& target_can_async_p ())
539 /* Simulate synchronous execution */
540 async_disable_stdin ();
543 /* If have argument (besides '&'), set proceed count of breakpoint
545 if (proc_count_exp
!= NULL
)
547 bpstat bs
= stop_bpstat
;
548 int num
= bpstat_num (&bs
);
549 if (num
== 0 && from_tty
)
552 ("Not stopped at any breakpoint; argument ignored.\n");
556 set_ignore_count (num
,
557 parse_and_eval_long (proc_count_exp
) - 1,
559 /* set_ignore_count prints a message ending with a period.
560 So print two spaces before "Continuing.". */
562 printf_filtered (" ");
563 num
= bpstat_num (&bs
);
568 printf_filtered (_("Continuing.\n"));
570 clear_proceed_status ();
572 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
575 /* Step until outside of current statement. */
578 step_command (char *count_string
, int from_tty
)
580 step_1 (0, 0, count_string
);
583 /* Likewise, but skip over subroutine calls as if single instructions. */
586 next_command (char *count_string
, int from_tty
)
588 step_1 (1, 0, count_string
);
591 /* Likewise, but step only one instruction. */
594 stepi_command (char *count_string
, int from_tty
)
596 step_1 (0, 1, count_string
);
600 nexti_command (char *count_string
, int from_tty
)
602 step_1 (1, 1, count_string
);
606 disable_longjmp_breakpoint_cleanup (void *ignore
)
608 disable_longjmp_breakpoint ();
612 step_1 (int skip_subroutines
, int single_inst
, char *count_string
)
615 struct frame_info
*frame
;
616 struct cleanup
*cleanups
= 0;
622 async_exec
= strip_bg_char (&count_string
);
624 /* If we get a request for running in the bg but the target
625 doesn't support it, error out. */
626 if (async_exec
&& !target_can_async_p ())
627 error (_("Asynchronous execution not supported on this target."));
629 /* If we don't get a request of running in the bg, then we need
630 to simulate synchronous (fg) execution. */
631 if (!async_exec
&& target_can_async_p ())
633 /* Simulate synchronous execution */
634 async_disable_stdin ();
637 count
= count_string
? parse_and_eval_long (count_string
) : 1;
639 if (!single_inst
|| skip_subroutines
) /* leave si command alone */
641 enable_longjmp_breakpoint ();
642 if (!target_can_async_p ())
643 cleanups
= make_cleanup (disable_longjmp_breakpoint_cleanup
, 0 /*ignore*/);
645 make_exec_cleanup (disable_longjmp_breakpoint_cleanup
, 0 /*ignore*/);
648 /* In synchronous case, all is well, just use the regular for loop. */
649 if (!target_can_async_p ())
651 for (; count
> 0; count
--)
653 clear_proceed_status ();
655 frame
= get_current_frame ();
656 if (!frame
) /* Avoid coredump here. Why tho? */
657 error (_("No current frame"));
658 step_frame_id
= get_frame_id (frame
);
662 find_pc_line_pc_range (stop_pc
, &step_range_start
, &step_range_end
);
663 if (step_range_end
== 0)
666 if (find_pc_partial_function (stop_pc
, &name
, &step_range_start
,
667 &step_range_end
) == 0)
668 error (_("Cannot find bounds of current function"));
670 target_terminal_ours ();
671 printf_filtered (_("\
672 Single stepping until exit from function %s, \n\
673 which has no line number information.\n"), name
);
678 /* Say we are stepping, but stop after one insn whatever it does. */
679 step_range_start
= step_range_end
= 1;
680 if (!skip_subroutines
)
682 Don't step over function calls, not even to functions lacking
684 step_over_calls
= STEP_OVER_NONE
;
687 if (skip_subroutines
)
688 step_over_calls
= STEP_OVER_ALL
;
690 step_multi
= (count
> 1);
691 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
697 if (!single_inst
|| skip_subroutines
)
698 do_cleanups (cleanups
);
701 /* In case of asynchronous target things get complicated, do only
702 one step for now, before returning control to the event loop. Let
703 the continuation figure out how many other steps we need to do,
704 and handle them one at the time, through step_once(). */
707 if (target_can_async_p ())
708 step_once (skip_subroutines
, single_inst
, count
);
712 /* Called after we are done with one step operation, to check whether
713 we need to step again, before we print the prompt and return control
714 to the user. If count is > 1, we will need to do one more call to
715 proceed(), via step_once(). Basically it is like step_once and
716 step_1_continuation are co-recursive. */
718 step_1_continuation (struct continuation_arg
*arg
)
721 int skip_subroutines
;
724 skip_subroutines
= arg
->data
.integer
;
725 single_inst
= arg
->next
->data
.integer
;
726 count
= arg
->next
->next
->data
.integer
;
729 step_once (skip_subroutines
, single_inst
, count
- 1);
731 if (!single_inst
|| skip_subroutines
)
732 do_exec_cleanups (ALL_CLEANUPS
);
735 /* Do just one step operation. If count >1 we will have to set up a
736 continuation to be done after the target stops (after this one
737 step). This is useful to implement the 'step n' kind of commands, in
738 case of asynchronous targets. We had to split step_1 into two parts,
739 one to be done before proceed() and one afterwards. This function is
740 called in case of step n with n>1, after the first step operation has
743 step_once (int skip_subroutines
, int single_inst
, int count
)
745 struct continuation_arg
*arg1
;
746 struct continuation_arg
*arg2
;
747 struct continuation_arg
*arg3
;
748 struct frame_info
*frame
;
752 clear_proceed_status ();
754 frame
= get_current_frame ();
755 if (!frame
) /* Avoid coredump here. Why tho? */
756 error (_("No current frame"));
757 step_frame_id
= get_frame_id (frame
);
761 find_pc_line_pc_range (stop_pc
, &step_range_start
, &step_range_end
);
763 /* If we have no line info, switch to stepi mode. */
764 if (step_range_end
== 0 && step_stop_if_no_debug
)
766 step_range_start
= step_range_end
= 1;
768 else if (step_range_end
== 0)
771 if (find_pc_partial_function (stop_pc
, &name
, &step_range_start
,
772 &step_range_end
) == 0)
773 error (_("Cannot find bounds of current function"));
775 target_terminal_ours ();
776 printf_filtered (_("\
777 Single stepping until exit from function %s, \n\
778 which has no line number information.\n"), name
);
783 /* Say we are stepping, but stop after one insn whatever it does. */
784 step_range_start
= step_range_end
= 1;
785 if (!skip_subroutines
)
787 Don't step over function calls, not even to functions lacking
789 step_over_calls
= STEP_OVER_NONE
;
792 if (skip_subroutines
)
793 step_over_calls
= STEP_OVER_ALL
;
795 step_multi
= (count
> 1);
797 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
799 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
801 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
803 arg1
->data
.integer
= skip_subroutines
;
805 arg2
->data
.integer
= single_inst
;
807 arg3
->data
.integer
= count
;
808 add_intermediate_continuation (step_1_continuation
, arg1
);
809 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
814 /* Continue program at specified address. */
817 jump_command (char *arg
, int from_tty
)
820 struct symtabs_and_lines sals
;
821 struct symtab_and_line sal
;
828 /* Find out whether we must run in the background. */
830 async_exec
= strip_bg_char (&arg
);
832 /* If we must run in the background, but the target can't do it,
834 if (async_exec
&& !target_can_async_p ())
835 error (_("Asynchronous execution not supported on this target."));
837 /* If we are not asked to run in the bg, then prepare to run in the
838 foreground, synchronously. */
839 if (!async_exec
&& target_can_async_p ())
841 /* Simulate synchronous execution */
842 async_disable_stdin ();
846 error_no_arg (_("starting address"));
848 sals
= decode_line_spec_1 (arg
, 1);
851 error (_("Unreasonable jump request"));
857 if (sal
.symtab
== 0 && sal
.pc
== 0)
858 error (_("No source file has been specified."));
860 resolve_sal_pc (&sal
); /* May error out */
862 /* See if we are trying to jump to another function. */
863 fn
= get_frame_function (get_current_frame ());
864 sfn
= find_pc_function (sal
.pc
);
865 if (fn
!= NULL
&& sfn
!= fn
)
867 if (!query ("Line %d is not in `%s'. Jump anyway? ", sal
.line
,
868 SYMBOL_PRINT_NAME (fn
)))
870 error (_("Not confirmed."));
877 fixup_symbol_section (sfn
, 0);
878 if (section_is_overlay (SYMBOL_BFD_SECTION (sfn
)) &&
879 !section_is_mapped (SYMBOL_BFD_SECTION (sfn
)))
881 if (!query ("WARNING!!! Destination is in unmapped overlay! Jump anyway? "))
883 error (_("Not confirmed."));
893 printf_filtered (_("Continuing at "));
894 deprecated_print_address_numeric (addr
, 1, gdb_stdout
);
895 printf_filtered (".\n");
898 clear_proceed_status ();
899 proceed (addr
, TARGET_SIGNAL_0
, 0);
903 /* Go to line or address in current procedure */
905 go_command (char *line_no
, int from_tty
)
907 if (line_no
== (char *) NULL
|| !*line_no
)
908 printf_filtered (GO_USAGE
);
911 tbreak_command (line_no
, from_tty
);
912 jump_command (line_no
, from_tty
);
917 /* Continue program giving it specified signal. */
920 signal_command (char *signum_exp
, int from_tty
)
922 enum target_signal oursig
;
924 dont_repeat (); /* Too dangerous. */
928 error_no_arg (_("signal number"));
930 /* It would be even slicker to make signal names be valid expressions,
931 (the type could be "enum $signal" or some such), then the user could
932 assign them to convenience variables. */
933 oursig
= target_signal_from_name (signum_exp
);
935 if (oursig
== TARGET_SIGNAL_UNKNOWN
)
937 /* No, try numeric. */
938 int num
= parse_and_eval_long (signum_exp
);
941 oursig
= TARGET_SIGNAL_0
;
943 oursig
= target_signal_from_command (num
);
948 if (oursig
== TARGET_SIGNAL_0
)
949 printf_filtered (_("Continuing with no signal.\n"));
951 printf_filtered (_("Continuing with signal %s.\n"),
952 target_signal_to_name (oursig
));
955 clear_proceed_status ();
956 /* "signal 0" should not get stuck if we are stopped at a breakpoint.
957 FIXME: Neither should "signal foo" but when I tried passing
958 (CORE_ADDR)-1 unconditionally I got a testsuite failure which I haven't
959 tried to track down yet. */
960 proceed (oursig
== TARGET_SIGNAL_0
? (CORE_ADDR
) -1 : stop_pc
, oursig
, 0);
963 /* Proceed until we reach a different source line with pc greater than
964 our current one or exit the function. We skip calls in both cases.
966 Note that eventually this command should probably be changed so
967 that only source lines are printed out when we hit the breakpoint
968 we set. This may involve changes to wait_for_inferior and the
969 proceed status code. */
972 until_next_command (int from_tty
)
974 struct frame_info
*frame
;
977 struct symtab_and_line sal
;
979 clear_proceed_status ();
981 frame
= get_current_frame ();
983 /* Step until either exited from this function or greater
984 than the current line (if in symbolic section) or pc (if
988 func
= find_pc_function (pc
);
992 struct minimal_symbol
*msymbol
= lookup_minimal_symbol_by_pc (pc
);
995 error (_("Execution is not within a known function."));
997 step_range_start
= SYMBOL_VALUE_ADDRESS (msymbol
);
1002 sal
= find_pc_line (pc
, 0);
1004 step_range_start
= BLOCK_START (SYMBOL_BLOCK_VALUE (func
));
1005 step_range_end
= sal
.end
;
1008 step_over_calls
= STEP_OVER_ALL
;
1009 step_frame_id
= get_frame_id (frame
);
1011 step_multi
= 0; /* Only one call to proceed */
1013 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 1);
1017 until_command (char *arg
, int from_tty
)
1021 if (!target_has_execution
)
1022 error (_("The program is not running."));
1024 /* Find out whether we must run in the background. */
1026 async_exec
= strip_bg_char (&arg
);
1028 /* If we must run in the background, but the target can't do it,
1030 if (async_exec
&& !target_can_async_p ())
1031 error (_("Asynchronous execution not supported on this target."));
1033 /* If we are not asked to run in the bg, then prepare to run in the
1034 foreground, synchronously. */
1035 if (!async_exec
&& target_can_async_p ())
1037 /* Simulate synchronous execution */
1038 async_disable_stdin ();
1042 until_break_command (arg
, from_tty
, 0);
1044 until_next_command (from_tty
);
1048 advance_command (char *arg
, int from_tty
)
1052 if (!target_has_execution
)
1053 error (_("The program is not running."));
1056 error_no_arg (_("a location"));
1058 /* Find out whether we must run in the background. */
1060 async_exec
= strip_bg_char (&arg
);
1062 /* If we must run in the background, but the target can't do it,
1064 if (async_exec
&& !target_can_async_p ())
1065 error (_("Asynchronous execution not supported on this target."));
1067 /* If we are not asked to run in the bg, then prepare to run in the
1068 foreground, synchronously. */
1069 if (!async_exec
&& target_can_async_p ())
1071 /* Simulate synchronous execution. */
1072 async_disable_stdin ();
1075 until_break_command (arg
, from_tty
, 1);
1078 /* Print the result of a function at the end of a 'finish' command. */
1081 print_return_value (int struct_return
, struct type
*value_type
)
1083 struct gdbarch
*gdbarch
= current_gdbarch
;
1084 struct cleanup
*old_chain
;
1085 struct ui_stream
*stb
;
1086 struct value
*value
;
1088 gdb_assert (TYPE_CODE (value_type
) != TYPE_CODE_VOID
);
1090 /* FIXME: 2003-09-27: When returning from a nested inferior function
1091 call, it's possible (with no help from the architecture vector)
1092 to locate and return/print a "struct return" value. This is just
1093 a more complicated case of what is already being done in in the
1094 inferior function call code. In fact, when inferior function
1095 calls are made async, this will likely be made the norm. */
1097 switch (gdbarch_return_value (gdbarch
, value_type
, NULL
, NULL
, NULL
))
1099 case RETURN_VALUE_REGISTER_CONVENTION
:
1100 case RETURN_VALUE_ABI_RETURNS_ADDRESS
:
1101 value
= allocate_value (value_type
);
1102 CHECK_TYPEDEF (value_type
);
1103 gdbarch_return_value (current_gdbarch
, value_type
, stop_registers
,
1104 value_contents_raw (value
), NULL
);
1106 case RETURN_VALUE_STRUCT_CONVENTION
:
1110 internal_error (__FILE__
, __LINE__
, _("bad switch"));
1116 stb
= ui_out_stream_new (uiout
);
1117 old_chain
= make_cleanup_ui_out_stream_delete (stb
);
1118 ui_out_text (uiout
, "Value returned is ");
1119 ui_out_field_fmt (uiout
, "gdb-result-var", "$%d",
1120 record_latest_value (value
));
1121 ui_out_text (uiout
, " = ");
1122 value_print (value
, stb
->stream
, 0, Val_no_prettyprint
);
1123 ui_out_field_stream (uiout
, "return-value", stb
);
1124 ui_out_text (uiout
, "\n");
1125 do_cleanups (old_chain
);
1129 ui_out_text (uiout
, "Value returned has type: ");
1130 ui_out_field_string (uiout
, "return-type", TYPE_NAME (value_type
));
1131 ui_out_text (uiout
, ".");
1132 ui_out_text (uiout
, " Cannot determine contents\n");
1136 /* Stuff that needs to be done by the finish command after the target
1137 has stopped. In asynchronous mode, we wait for the target to stop
1138 in the call to poll or select in the event loop, so it is
1139 impossible to do all the stuff as part of the finish_command
1140 function itself. The only chance we have to complete this command
1141 is in fetch_inferior_event, which is called by the event loop as
1142 soon as it detects that the target has stopped. This function is
1143 called via the cmd_continuation pointer. */
1146 finish_command_continuation (struct continuation_arg
*arg
)
1148 struct symbol
*function
;
1149 struct breakpoint
*breakpoint
;
1150 struct cleanup
*cleanups
;
1152 breakpoint
= (struct breakpoint
*) arg
->data
.pointer
;
1153 function
= (struct symbol
*) arg
->next
->data
.pointer
;
1154 cleanups
= (struct cleanup
*) arg
->next
->next
->data
.pointer
;
1156 if (bpstat_find_breakpoint (stop_bpstat
, breakpoint
) != NULL
1157 && function
!= NULL
)
1159 struct type
*value_type
;
1163 value_type
= TYPE_TARGET_TYPE (SYMBOL_TYPE (function
));
1165 internal_error (__FILE__
, __LINE__
,
1166 _("finish_command: function has no target type"));
1168 if (TYPE_CODE (value_type
) == TYPE_CODE_VOID
)
1170 do_exec_cleanups (cleanups
);
1174 CHECK_TYPEDEF (value_type
);
1175 gcc_compiled
= BLOCK_GCC_COMPILED (SYMBOL_BLOCK_VALUE (function
));
1176 struct_return
= using_struct_return (value_type
, gcc_compiled
);
1178 print_return_value (struct_return
, value_type
);
1181 do_exec_cleanups (cleanups
);
1184 /* "finish": Set a temporary breakpoint at the place the selected
1185 frame will return to, then continue. */
1188 finish_command (char *arg
, int from_tty
)
1190 struct symtab_and_line sal
;
1191 struct frame_info
*frame
;
1192 struct symbol
*function
;
1193 struct breakpoint
*breakpoint
;
1194 struct cleanup
*old_chain
;
1195 struct continuation_arg
*arg1
, *arg2
, *arg3
;
1199 /* Find out whether we must run in the background. */
1201 async_exec
= strip_bg_char (&arg
);
1203 /* If we must run in the background, but the target can't do it,
1205 if (async_exec
&& !target_can_async_p ())
1206 error (_("Asynchronous execution not supported on this target."));
1208 /* If we are not asked to run in the bg, then prepare to run in the
1209 foreground, synchronously. */
1210 if (!async_exec
&& target_can_async_p ())
1212 /* Simulate synchronous execution. */
1213 async_disable_stdin ();
1217 error (_("The \"finish\" command does not take any arguments."));
1218 if (!target_has_execution
)
1219 error (_("The program is not running."));
1220 if (deprecated_selected_frame
== NULL
)
1221 error (_("No selected frame."));
1223 frame
= get_prev_frame (deprecated_selected_frame
);
1225 error (_("\"finish\" not meaningful in the outermost frame."));
1227 clear_proceed_status ();
1229 sal
= find_pc_line (get_frame_pc (frame
), 0);
1230 sal
.pc
= get_frame_pc (frame
);
1232 breakpoint
= set_momentary_breakpoint (sal
, get_frame_id (frame
), bp_finish
);
1234 if (!target_can_async_p ())
1235 old_chain
= make_cleanup_delete_breakpoint (breakpoint
);
1237 old_chain
= make_exec_cleanup_delete_breakpoint (breakpoint
);
1239 /* Find the function we will return from. */
1241 function
= find_pc_function (get_frame_pc (deprecated_selected_frame
));
1243 /* Print info on the selected frame, including level number but not
1247 printf_filtered (_("Run till exit from "));
1248 print_stack_frame (get_selected_frame (NULL
), 1, LOCATION
);
1251 /* If running asynchronously and the target support asynchronous
1252 execution, set things up for the rest of the finish command to be
1253 completed later on, when gdb has detected that the target has
1254 stopped, in fetch_inferior_event. */
1255 if (target_can_async_p ())
1258 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
1260 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
1262 (struct continuation_arg
*) xmalloc (sizeof (struct continuation_arg
));
1266 arg1
->data
.pointer
= breakpoint
;
1267 arg2
->data
.pointer
= function
;
1268 arg3
->data
.pointer
= old_chain
;
1269 add_continuation (finish_command_continuation
, arg1
);
1272 proceed_to_finish
= 1; /* We want stop_registers, please... */
1273 proceed ((CORE_ADDR
) -1, TARGET_SIGNAL_DEFAULT
, 0);
1275 /* Do this only if not running asynchronously or if the target
1276 cannot do async execution. Otherwise, complete this command when
1277 the target actually stops, in fetch_inferior_event. */
1278 if (!target_can_async_p ())
1280 /* Did we stop at our breakpoint? */
1281 if (bpstat_find_breakpoint (stop_bpstat
, breakpoint
) != NULL
1282 && function
!= NULL
)
1284 struct type
*value_type
;
1288 value_type
= TYPE_TARGET_TYPE (SYMBOL_TYPE (function
));
1290 internal_error (__FILE__
, __LINE__
,
1291 _("finish_command: function has no target type"));
1293 /* FIXME: Shouldn't we do the cleanups before returning? */
1294 if (TYPE_CODE (value_type
) == TYPE_CODE_VOID
)
1297 CHECK_TYPEDEF (value_type
);
1298 gcc_compiled
= BLOCK_GCC_COMPILED (SYMBOL_BLOCK_VALUE (function
));
1299 struct_return
= using_struct_return (value_type
, gcc_compiled
);
1301 print_return_value (struct_return
, value_type
);
1304 do_cleanups (old_chain
);
1310 program_info (char *args
, int from_tty
)
1312 bpstat bs
= stop_bpstat
;
1313 int num
= bpstat_num (&bs
);
1315 if (!target_has_execution
)
1317 printf_filtered (_("The program being debugged is not being run.\n"));
1321 target_files_info ();
1322 printf_filtered (_("Program stopped at %s.\n"),
1323 hex_string ((unsigned long) stop_pc
));
1325 printf_filtered (_("It stopped after being stepped.\n"));
1328 /* There may be several breakpoints in the same place, so this
1329 isn't as strange as it seems. */
1334 printf_filtered (_("\
1335 It stopped at a breakpoint that has since been deleted.\n"));
1338 printf_filtered (_("It stopped at breakpoint %d.\n"), num
);
1339 num
= bpstat_num (&bs
);
1342 else if (stop_signal
!= TARGET_SIGNAL_0
)
1344 printf_filtered (_("It stopped with signal %s, %s.\n"),
1345 target_signal_to_name (stop_signal
),
1346 target_signal_to_string (stop_signal
));
1351 printf_filtered (_("\
1352 Type \"info stack\" or \"info registers\" for more information.\n"));
1357 environment_info (char *var
, int from_tty
)
1361 char *val
= get_in_environ (inferior_environ
, var
);
1364 puts_filtered (var
);
1365 puts_filtered (" = ");
1366 puts_filtered (val
);
1367 puts_filtered ("\n");
1371 puts_filtered ("Environment variable \"");
1372 puts_filtered (var
);
1373 puts_filtered ("\" not defined.\n");
1378 char **vector
= environ_vector (inferior_environ
);
1381 puts_filtered (*vector
++);
1382 puts_filtered ("\n");
1388 set_environment_command (char *arg
, int from_tty
)
1390 char *p
, *val
, *var
;
1394 error_no_arg (_("environment variable and value"));
1396 /* Find seperation between variable name and value */
1397 p
= (char *) strchr (arg
, '=');
1398 val
= (char *) strchr (arg
, ' ');
1400 if (p
!= 0 && val
!= 0)
1402 /* We have both a space and an equals. If the space is before the
1403 equals, walk forward over the spaces til we see a nonspace
1404 (possibly the equals). */
1409 /* Now if the = is after the char following the spaces,
1410 take the char following the spaces. */
1414 else if (val
!= 0 && p
== 0)
1418 error_no_arg (_("environment variable to set"));
1420 if (p
== 0 || p
[1] == 0)
1424 p
= arg
+ strlen (arg
); /* So that savestring below will work */
1428 /* Not setting variable value to null */
1430 while (*val
== ' ' || *val
== '\t')
1434 while (p
!= arg
&& (p
[-1] == ' ' || p
[-1] == '\t'))
1437 var
= savestring (arg
, p
- arg
);
1440 printf_filtered (_("\
1441 Setting environment variable \"%s\" to null value.\n"),
1443 set_in_environ (inferior_environ
, var
, "");
1446 set_in_environ (inferior_environ
, var
, val
);
1451 unset_environment_command (char *var
, int from_tty
)
1455 /* If there is no argument, delete all environment variables.
1456 Ask for confirmation if reading from the terminal. */
1457 if (!from_tty
|| query (_("Delete all environment variables? ")))
1459 free_environ (inferior_environ
);
1460 inferior_environ
= make_environ ();
1464 unset_in_environ (inferior_environ
, var
);
1467 /* Handle the execution path (PATH variable) */
1469 static const char path_var_name
[] = "PATH";
1472 path_info (char *args
, int from_tty
)
1474 puts_filtered ("Executable and object file path: ");
1475 puts_filtered (get_in_environ (inferior_environ
, path_var_name
));
1476 puts_filtered ("\n");
1479 /* Add zero or more directories to the front of the execution path. */
1482 path_command (char *dirname
, int from_tty
)
1487 env
= get_in_environ (inferior_environ
, path_var_name
);
1488 /* Can be null if path is not set */
1491 exec_path
= xstrdup (env
);
1492 mod_path (dirname
, &exec_path
);
1493 set_in_environ (inferior_environ
, path_var_name
, exec_path
);
1496 path_info ((char *) NULL
, from_tty
);
1500 /* Print out the machine register regnum. If regnum is -1, print all
1501 registers (print_all == 1) or all non-float and non-vector
1502 registers (print_all == 0).
1504 For most machines, having all_registers_info() print the
1505 register(s) one per line is good enough. If a different format is
1506 required, (eg, for MIPS or Pyramid 90x, which both have lots of
1507 regs), or there is an existing convention for showing all the
1508 registers, define the architecture method PRINT_REGISTERS_INFO to
1509 provide that format. */
1512 default_print_registers_info (struct gdbarch
*gdbarch
,
1513 struct ui_file
*file
,
1514 struct frame_info
*frame
,
1515 int regnum
, int print_all
)
1518 const int numregs
= NUM_REGS
+ NUM_PSEUDO_REGS
;
1519 char buffer
[MAX_REGISTER_SIZE
];
1521 for (i
= 0; i
< numregs
; i
++)
1523 /* Decide between printing all regs, non-float / vector regs, or
1529 if (!gdbarch_register_reggroup_p (gdbarch
, i
, all_reggroup
))
1534 if (!gdbarch_register_reggroup_p (gdbarch
, i
, general_reggroup
))
1544 /* If the register name is empty, it is undefined for this
1545 processor, so don't display anything. */
1546 if (REGISTER_NAME (i
) == NULL
|| *(REGISTER_NAME (i
)) == '\0')
1549 fputs_filtered (REGISTER_NAME (i
), file
);
1550 print_spaces_filtered (15 - strlen (REGISTER_NAME (i
)), file
);
1552 /* Get the data in raw format. */
1553 if (! frame_register_read (frame
, i
, buffer
))
1555 fprintf_filtered (file
, "*value not available*\n");
1559 /* If virtual format is floating, print it that way, and in raw
1561 if (TYPE_CODE (register_type (current_gdbarch
, i
)) == TYPE_CODE_FLT
)
1565 val_print (register_type (current_gdbarch
, i
), buffer
, 0, 0,
1566 file
, 0, 1, 0, Val_pretty_default
);
1568 fprintf_filtered (file
, "\t(raw 0x");
1569 for (j
= 0; j
< register_size (current_gdbarch
, i
); j
++)
1572 if (TARGET_BYTE_ORDER
== BFD_ENDIAN_BIG
)
1575 idx
= register_size (current_gdbarch
, i
) - 1 - j
;
1576 fprintf_filtered (file
, "%02x", (unsigned char) buffer
[idx
]);
1578 fprintf_filtered (file
, ")");
1582 /* Print the register in hex. */
1583 val_print (register_type (current_gdbarch
, i
), buffer
, 0, 0,
1584 file
, 'x', 1, 0, Val_pretty_default
);
1585 /* If not a vector register, print it also according to its
1587 if (TYPE_VECTOR (register_type (current_gdbarch
, i
)) == 0)
1589 fprintf_filtered (file
, "\t");
1590 val_print (register_type (current_gdbarch
, i
), buffer
, 0, 0,
1591 file
, 0, 1, 0, Val_pretty_default
);
1595 fprintf_filtered (file
, "\n");
1600 registers_info (char *addr_exp
, int fpregs
)
1602 int regnum
, numregs
;
1605 if (!target_has_registers
)
1606 error (_("The program has no registers now."));
1607 if (deprecated_selected_frame
== NULL
)
1608 error (_("No selected frame."));
1612 gdbarch_print_registers_info (current_gdbarch
, gdb_stdout
,
1613 deprecated_selected_frame
, -1, fpregs
);
1617 while (*addr_exp
!= '\0')
1622 /* Keep skipping leading white space. */
1623 if (isspace ((*addr_exp
)))
1629 /* Discard any leading ``$''. Check that there is something
1630 resembling a register following it. */
1631 if (addr_exp
[0] == '$')
1633 if (isspace ((*addr_exp
)) || (*addr_exp
) == '\0')
1634 error (_("Missing register name"));
1636 /* Find the start/end of this register name/num/group. */
1638 while ((*addr_exp
) != '\0' && !isspace ((*addr_exp
)))
1642 /* Figure out what we've found and display it. */
1644 /* A register name? */
1646 int regnum
= frame_map_name_to_regnum (deprecated_selected_frame
,
1647 start
, end
- start
);
1650 gdbarch_print_registers_info (current_gdbarch
, gdb_stdout
,
1651 deprecated_selected_frame
, regnum
, fpregs
);
1656 /* A register number? (how portable is this one?). */
1659 int regnum
= strtol (start
, &endptr
, 0);
1662 && regnum
< NUM_REGS
+ NUM_PSEUDO_REGS
)
1664 gdbarch_print_registers_info (current_gdbarch
, gdb_stdout
,
1665 deprecated_selected_frame
, regnum
, fpregs
);
1670 /* A register group? */
1672 struct reggroup
*group
;
1673 for (group
= reggroup_next (current_gdbarch
, NULL
);
1675 group
= reggroup_next (current_gdbarch
, group
))
1677 /* Don't bother with a length check. Should the user
1678 enter a short register group name, go with the first
1679 group that matches. */
1680 if (strncmp (start
, reggroup_name (group
), end
- start
) == 0)
1686 for (regnum
= 0; regnum
< NUM_REGS
+ NUM_PSEUDO_REGS
; regnum
++)
1688 if (gdbarch_register_reggroup_p (current_gdbarch
, regnum
,
1690 gdbarch_print_registers_info (current_gdbarch
,
1691 gdb_stdout
, deprecated_selected_frame
,
1698 /* Nothing matched. */
1699 error (_("Invalid register `%.*s'"), (int) (end
- start
), start
);
1704 all_registers_info (char *addr_exp
, int from_tty
)
1706 registers_info (addr_exp
, 1);
1710 nofp_registers_info (char *addr_exp
, int from_tty
)
1712 registers_info (addr_exp
, 0);
1716 print_vector_info (struct gdbarch
*gdbarch
, struct ui_file
*file
,
1717 struct frame_info
*frame
, const char *args
)
1719 if (!target_has_registers
)
1720 error (_("The program has no registers now."));
1721 if (deprecated_selected_frame
== NULL
)
1722 error (_("No selected frame."));
1724 if (gdbarch_print_vector_info_p (gdbarch
))
1725 gdbarch_print_vector_info (gdbarch
, file
, frame
, args
);
1729 int printed_something
= 0;
1731 for (regnum
= 0; regnum
< NUM_REGS
+ NUM_PSEUDO_REGS
; regnum
++)
1733 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, vector_reggroup
))
1735 printed_something
= 1;
1736 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
1739 if (!printed_something
)
1740 fprintf_filtered (file
, "No vector information\n");
1745 vector_info (char *args
, int from_tty
)
1747 print_vector_info (current_gdbarch
, gdb_stdout
, deprecated_selected_frame
, args
);
1753 * Should save/restore the tty state since it might be that the
1754 * program to be debugged was started on this tty and it wants
1755 * the tty in some state other than what we want. If it's running
1756 * on another terminal or without a terminal, then saving and
1757 * restoring the tty state is a harmless no-op.
1758 * This only needs to be done if we are attaching to a process.
1763 takes a program started up outside of gdb and ``attaches'' to it.
1764 This stops it cold in its tracks and allows us to start debugging it.
1765 and wait for the trace-trap that results from attaching. */
1768 attach_command (char *args
, int from_tty
)
1771 char *full_exec_path
= NULL
;
1773 dont_repeat (); /* Not for the faint of heart */
1775 if (target_has_execution
)
1777 if (query ("A program is being debugged already. Kill it? "))
1780 error (_("Not killed."));
1783 /* Clear out solib state. Otherwise the solib state of the previous
1784 inferior might have survived and is entirely wrong for the new
1785 target. This has been observed on Linux using glibc 2.3. How to
1797 Cannot access memory at address 0xdeadbeef
1803 target_attach (args
, from_tty
);
1805 /* Set up the "saved terminal modes" of the inferior
1806 based on what modes we are starting it with. */
1807 target_terminal_init ();
1809 /* Set up execution context to know that we should return from
1810 wait_for_inferior as soon as the target reports a stop. */
1811 init_wait_for_inferior ();
1812 clear_proceed_status ();
1814 /* No traps are generated when attaching to inferior under Mach 3
1816 #ifndef ATTACH_NO_WAIT
1817 /* Careful here. See comments in inferior.h. Basically some OSes
1818 don't ignore SIGSTOPs on continue requests anymore. We need a
1819 way for handle_inferior_event to reset the stop_signal variable
1820 after an attach, and this is what STOP_QUIETLY_NO_SIGSTOP is for. */
1821 stop_soon
= STOP_QUIETLY_NO_SIGSTOP
;
1822 wait_for_inferior ();
1823 stop_soon
= NO_STOP_QUIETLY
;
1827 * If no exec file is yet known, try to determine it from the
1830 exec_file
= (char *) get_exec_file (0);
1833 exec_file
= target_pid_to_exec_file (PIDGET (inferior_ptid
));
1836 /* It's possible we don't have a full path, but rather just a
1837 filename. Some targets, such as HP-UX, don't provide the
1840 Attempt to qualify the filename against the source path.
1841 (If that fails, we'll just fall back on the original
1842 filename. Not much more we can do...)
1844 if (!source_full_path_of (exec_file
, &full_exec_path
))
1845 full_exec_path
= savestring (exec_file
, strlen (exec_file
));
1847 exec_file_attach (full_exec_path
, from_tty
);
1848 symbol_file_add_main (full_exec_path
, from_tty
);
1853 reopen_exec_file ();
1858 /* Add shared library symbols from the newly attached process, if any. */
1859 SOLIB_ADD ((char *) 0, from_tty
, ¤t_target
, auto_solib_add
);
1860 re_enable_breakpoints_in_shlibs ();
1863 /* Take any necessary post-attaching actions for this platform.
1865 target_post_attach (PIDGET (inferior_ptid
));
1867 /* Install inferior's terminal modes. */
1868 target_terminal_inferior ();
1872 if (deprecated_attach_hook
)
1873 deprecated_attach_hook ();
1878 * takes a program previously attached to and detaches it.
1879 * The program resumes execution and will no longer stop
1880 * on signals, etc. We better not have left any breakpoints
1881 * in the program or it'll die when it hits one. For this
1882 * to work, it may be necessary for the process to have been
1883 * previously attached. It *might* work if the program was
1884 * started via the normal ptrace (PTRACE_TRACEME).
1888 detach_command (char *args
, int from_tty
)
1890 dont_repeat (); /* Not for the faint of heart. */
1891 target_detach (args
, from_tty
);
1892 #if defined(SOLIB_RESTART)
1895 if (deprecated_detach_hook
)
1896 deprecated_detach_hook ();
1899 /* Disconnect from the current target without resuming it (leaving it
1900 waiting for a debugger).
1902 We'd better not have left any breakpoints in the program or the
1903 next debugger will get confused. Currently only supported for some
1904 remote targets, since the normal attach mechanisms don't work on
1905 stopped processes on some native platforms (e.g. GNU/Linux). */
1908 disconnect_command (char *args
, int from_tty
)
1910 dont_repeat (); /* Not for the faint of heart */
1911 target_disconnect (args
, from_tty
);
1912 #if defined(SOLIB_RESTART)
1915 if (deprecated_detach_hook
)
1916 deprecated_detach_hook ();
1919 /* Stop the execution of the target while running in async mode, in
1922 interrupt_target_command (char *args
, int from_tty
)
1924 if (target_can_async_p ())
1926 dont_repeat (); /* Not for the faint of heart */
1932 print_float_info (struct gdbarch
*gdbarch
, struct ui_file
*file
,
1933 struct frame_info
*frame
, const char *args
)
1935 if (!target_has_registers
)
1936 error (_("The program has no registers now."));
1937 if (deprecated_selected_frame
== NULL
)
1938 error (_("No selected frame."));
1940 if (gdbarch_print_float_info_p (gdbarch
))
1941 gdbarch_print_float_info (gdbarch
, file
, frame
, args
);
1945 int printed_something
= 0;
1947 for (regnum
= 0; regnum
< NUM_REGS
+ NUM_PSEUDO_REGS
; regnum
++)
1949 if (gdbarch_register_reggroup_p (gdbarch
, regnum
, float_reggroup
))
1951 printed_something
= 1;
1952 gdbarch_print_registers_info (gdbarch
, file
, frame
, regnum
, 1);
1955 if (!printed_something
)
1956 fprintf_filtered (file
, "\
1957 No floating-point info available for this processor.\n");
1962 float_info (char *args
, int from_tty
)
1964 print_float_info (current_gdbarch
, gdb_stdout
,
1965 deprecated_selected_frame
, args
);
1969 unset_command (char *args
, int from_tty
)
1971 printf_filtered (_("\
1972 \"unset\" must be followed by the name of an unset subcommand.\n"));
1973 help_list (unsetlist
, "unset ", -1, gdb_stdout
);
1977 _initialize_infcmd (void)
1979 struct cmd_list_element
*c
;
1981 c
= add_com ("tty", class_run
, tty_command
,
1982 _("Set terminal for future runs of program being debugged."));
1983 set_cmd_completer (c
, filename_completer
);
1985 add_setshow_optional_filename_cmd ("args", class_run
,
1986 &inferior_args
, _("\
1987 Set argument list to give program being debugged when it is started."), _("\
1988 Show argument list to give program being debugged when it is started."), _("\
1989 Follow this command with any number of args, to be passed to the program."),
1992 &setlist
, &showlist
);
1994 c
= add_cmd ("environment", no_class
, environment_info
, _("\
1995 The environment to give the program, or one variable's value.\n\
1996 With an argument VAR, prints the value of environment variable VAR to\n\
1997 give the program being debugged. With no arguments, prints the entire\n\
1998 environment to be given to the program."), &showlist
);
1999 set_cmd_completer (c
, noop_completer
);
2001 add_prefix_cmd ("unset", no_class
, unset_command
,
2002 _("Complement to certain \"set\" commands."),
2003 &unsetlist
, "unset ", 0, &cmdlist
);
2005 c
= add_cmd ("environment", class_run
, unset_environment_command
, _("\
2006 Cancel environment variable VAR for the program.\n\
2007 This does not affect the program until the next \"run\" command."),
2009 set_cmd_completer (c
, noop_completer
);
2011 c
= add_cmd ("environment", class_run
, set_environment_command
, _("\
2012 Set environment variable value to give the program.\n\
2013 Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\
2014 VALUES of environment variables are uninterpreted strings.\n\
2015 This does not affect the program until the next \"run\" command."),
2017 set_cmd_completer (c
, noop_completer
);
2019 c
= add_com ("path", class_files
, path_command
, _("\
2020 Add directory DIR(s) to beginning of search path for object files.\n\
2021 $cwd in the path means the current working directory.\n\
2022 This path is equivalent to the $PATH shell variable. It is a list of\n\
2023 directories, separated by colons. These directories are searched to find\n\
2024 fully linked executable files and separately compiled object files as needed."));
2025 set_cmd_completer (c
, filename_completer
);
2027 c
= add_cmd ("paths", no_class
, path_info
, _("\
2028 Current search path for finding object files.\n\
2029 $cwd in the path means the current working directory.\n\
2030 This path is equivalent to the $PATH shell variable. It is a list of\n\
2031 directories, separated by colons. These directories are searched to find\n\
2032 fully linked executable files and separately compiled object files as needed."),
2034 set_cmd_completer (c
, noop_completer
);
2036 add_com ("attach", class_run
, attach_command
, _("\
2037 Attach to a process or file outside of GDB.\n\
2038 This command attaches to another target, of the same type as your last\n\
2039 \"target\" command (\"info files\" will show your target stack).\n\
2040 The command may take as argument a process id or a device file.\n\
2041 For a process id, you must have permission to send the process a signal,\n\
2042 and it must have the same effective uid as the debugger.\n\
2043 When using \"attach\" with a process id, the debugger finds the\n\
2044 program running in the process, looking first in the current working\n\
2045 directory, or (if not found there) using the source file search path\n\
2046 (see the \"directory\" command). You can also use the \"file\" command\n\
2047 to specify the program, and to load its symbol table."));
2049 add_com ("detach", class_run
, detach_command
, _("\
2050 Detach a process or file previously attached.\n\
2051 If a process, it is no longer traced, and it continues its execution. If\n\
2052 you were debugging a file, the file is closed and gdb no longer accesses it."));
2054 add_com ("disconnect", class_run
, disconnect_command
, _("\
2055 Disconnect from a target.\n\
2056 The target will wait for another debugger to connect. Not available for\n\
2059 add_com ("signal", class_run
, signal_command
, _("\
2060 Continue program giving it signal specified by the argument.\n\
2061 An argument of \"0\" means continue program without giving it a signal."));
2063 add_com ("stepi", class_run
, stepi_command
, _("\
2064 Step one instruction exactly.\n\
2065 Argument N means do this N times (or till program stops for another reason)."));
2066 add_com_alias ("si", "stepi", class_alias
, 0);
2068 add_com ("nexti", class_run
, nexti_command
, _("\
2069 Step one instruction, but proceed through subroutine calls.\n\
2070 Argument N means do this N times (or till program stops for another reason)."));
2071 add_com_alias ("ni", "nexti", class_alias
, 0);
2073 add_com ("finish", class_run
, finish_command
, _("\
2074 Execute until selected stack frame returns.\n\
2075 Upon return, the value returned is printed and put in the value history."));
2077 add_com ("next", class_run
, next_command
, _("\
2078 Step program, proceeding through subroutine calls.\n\
2079 Like the \"step\" command as long as subroutine calls do not happen;\n\
2080 when they do, the call is treated as one instruction.\n\
2081 Argument N means do this N times (or till program stops for another reason)."));
2082 add_com_alias ("n", "next", class_run
, 1);
2084 add_com_alias ("S", "next", class_run
, 1);
2086 add_com ("step", class_run
, step_command
, _("\
2087 Step program until it reaches a different source line.\n\
2088 Argument N means do this N times (or till program stops for another reason)."));
2089 add_com_alias ("s", "step", class_run
, 1);
2091 c
= add_com ("until", class_run
, until_command
, _("\
2092 Execute until the program reaches a source line greater than the current\n\
2093 or a specified location (same args as break command) within the current frame."));
2094 set_cmd_completer (c
, location_completer
);
2095 add_com_alias ("u", "until", class_run
, 1);
2097 c
= add_com ("advance", class_run
, advance_command
, _("\
2098 Continue the program up to the given location (same form as args for break command).\n\
2099 Execution will also stop upon exit from the current stack frame."));
2100 set_cmd_completer (c
, location_completer
);
2102 c
= add_com ("jump", class_run
, jump_command
, _("\
2103 Continue program being debugged at specified line or address.\n\
2104 Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\
2105 for an address to start at."));
2106 set_cmd_completer (c
, location_completer
);
2110 c
= add_com ("go", class_run
, go_command
, _("\
2111 Usage: go <location>\n\
2112 Continue program being debugged, stopping at specified line or \n\
2114 Give as argument either LINENUM or *ADDR, where ADDR is an \n\
2115 expression for an address to start at.\n\
2116 This command is a combination of tbreak and jump."));
2117 set_cmd_completer (c
, location_completer
);
2121 add_com_alias ("g", "go", class_run
, 1);
2123 add_com ("continue", class_run
, continue_command
, _("\
2124 Continue program being debugged, after signal or breakpoint.\n\
2125 If proceeding from breakpoint, a number N may be used as an argument,\n\
2126 which means to set the ignore count of that breakpoint to N - 1 (so that\n\
2127 the breakpoint won't break until the Nth time it is reached)."));
2128 add_com_alias ("c", "cont", class_run
, 1);
2129 add_com_alias ("fg", "cont", class_run
, 1);
2131 c
= add_com ("run", class_run
, run_command
, _("\
2132 Start debugged program. You may specify arguments to give it.\n\
2133 Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\
2134 Input and output redirection with \">\", \"<\", or \">>\" are also allowed.\n\n\
2135 With no arguments, uses arguments last specified (with \"run\" or \"set args\").\n\
2136 To cancel previous arguments and run with no arguments,\n\
2137 use \"set args\" without arguments."));
2138 set_cmd_completer (c
, filename_completer
);
2139 add_com_alias ("r", "run", class_run
, 1);
2141 add_com ("R", class_run
, run_no_args_command
,
2142 _("Start debugged program with no arguments."));
2144 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\
2147 \"run\" command."));
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
);