1 /* General utility routines for GDB, the GNU debugger.
3 Copyright (C) 1986, 1988-2012 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
21 #include "dyn-string.h"
22 #include "gdb_assert.h"
24 #include "gdb_string.h"
26 #include "event-top.h"
27 #include "exceptions.h"
28 #include "gdbthread.h"
29 #ifdef HAVE_SYS_RESOURCE_H
30 #include <sys/resource.h>
31 #endif /* HAVE_SYS_RESOURCE_H */
34 #include "tui/tui.h" /* For tui_get_command_dimension. */
41 /* SunOS's curses.h has a '#define reg register' in it. Thank you Sun. */
47 #include "timeval-utils.h"
52 #include "gdb-demangle.h"
53 #include "expression.h"
57 #include "filenames.h"
59 #include "gdb_obstack.h"
65 #include "inferior.h" /* for signed_pointer_to_address */
67 #include <sys/param.h> /* For MAXPATHLEN */
69 #include "gdb_curses.h"
71 #include "readline/readline.h"
76 #include "gdb_usleep.h"
78 #include "gdb_regex.h"
81 extern PTR
malloc (); /* ARI: PTR */
83 #if !HAVE_DECL_REALLOC
84 extern PTR
realloc (); /* ARI: PTR */
90 /* readline defines this. */
93 void (*deprecated_error_begin_hook
) (void);
95 /* Prototypes for local functions */
97 static void vfprintf_maybe_filtered (struct ui_file
*, const char *,
98 va_list, int) ATTRIBUTE_PRINTF (2, 0);
100 static void fputs_maybe_filtered (const char *, struct ui_file
*, int);
102 static void do_my_cleanups (struct cleanup
**, struct cleanup
*);
104 static void prompt_for_continue (void);
106 static void set_screen_size (void);
107 static void set_width (void);
109 /* A flag indicating whether to timestamp debugging messages. */
111 static int debug_timestamp
= 0;
113 /* Chain of cleanup actions established with make_cleanup,
114 to be executed if an error happens. */
116 static struct cleanup
*cleanup_chain
; /* cleaned up after a failed command */
117 static struct cleanup
*final_cleanup_chain
; /* cleaned up when gdb exits */
119 /* Nonzero if we have job control. */
123 /* Nonzero means a quit has been requested. */
127 /* Nonzero means quit immediately if Control-C is typed now, rather
128 than waiting until QUIT is executed. Be careful in setting this;
129 code which executes with immediate_quit set has to be very careful
130 about being able to deal with being interrupted at any time. It is
131 almost always better to use QUIT; the only exception I can think of
132 is being able to quit out of a system call (using EINTR loses if
133 the SIGINT happens between the previous QUIT and the system call).
134 To immediately quit in the case in which a SIGINT happens between
135 the previous QUIT and setting immediate_quit (desirable anytime we
136 expect to block), call QUIT after setting immediate_quit. */
140 /* Nonzero means that strings with character values >0x7F should be printed
141 as octal escapes. Zero means just print the value (e.g. it's an
142 international character, and the terminal or window can cope.) */
144 int sevenbit_strings
= 0;
146 show_sevenbit_strings (struct ui_file
*file
, int from_tty
,
147 struct cmd_list_element
*c
, const char *value
)
149 fprintf_filtered (file
, _("Printing of 8-bit characters "
150 "in strings as \\nnn is %s.\n"),
154 /* String to be printed before error messages, if any. */
156 char *error_pre_print
;
158 /* String to be printed before quit messages, if any. */
160 char *quit_pre_print
;
162 /* String to be printed before warning messages, if any. */
164 char *warning_pre_print
= "\nwarning: ";
166 int pagination_enabled
= 1;
168 show_pagination_enabled (struct ui_file
*file
, int from_tty
,
169 struct cmd_list_element
*c
, const char *value
)
171 fprintf_filtered (file
, _("State of pagination is %s.\n"), value
);
176 /* Add a new cleanup to the cleanup_chain,
177 and return the previous chain pointer
178 to be passed later to do_cleanups or discard_cleanups.
179 Args are FUNCTION to clean up with, and ARG to pass to it. */
182 make_cleanup (make_cleanup_ftype
*function
, void *arg
)
184 return make_my_cleanup (&cleanup_chain
, function
, arg
);
188 make_cleanup_dtor (make_cleanup_ftype
*function
, void *arg
,
189 void (*dtor
) (void *))
191 return make_my_cleanup2 (&cleanup_chain
,
192 function
, arg
, dtor
);
196 make_final_cleanup (make_cleanup_ftype
*function
, void *arg
)
198 return make_my_cleanup (&final_cleanup_chain
, function
, arg
);
202 do_freeargv (void *arg
)
204 freeargv ((char **) arg
);
208 make_cleanup_freeargv (char **arg
)
210 return make_my_cleanup (&cleanup_chain
, do_freeargv
, arg
);
214 do_dyn_string_delete (void *arg
)
216 dyn_string_delete ((dyn_string_t
) arg
);
220 make_cleanup_dyn_string_delete (dyn_string_t arg
)
222 return make_my_cleanup (&cleanup_chain
, do_dyn_string_delete
, arg
);
226 do_bfd_close_cleanup (void *arg
)
232 make_cleanup_bfd_close (bfd
*abfd
)
234 return make_cleanup (do_bfd_close_cleanup
, abfd
);
238 do_close_cleanup (void *arg
)
246 make_cleanup_close (int fd
)
248 int *saved_fd
= xmalloc (sizeof (fd
));
251 return make_cleanup_dtor (do_close_cleanup
, saved_fd
, xfree
);
254 /* Helper function which does the work for make_cleanup_fclose. */
257 do_fclose_cleanup (void *arg
)
264 /* Return a new cleanup that closes FILE. */
267 make_cleanup_fclose (FILE *file
)
269 return make_cleanup (do_fclose_cleanup
, file
);
272 /* Helper function which does the work for make_cleanup_obstack_free. */
275 do_obstack_free (void *arg
)
277 struct obstack
*ob
= arg
;
279 obstack_free (ob
, NULL
);
282 /* Return a new cleanup that frees OBSTACK. */
285 make_cleanup_obstack_free (struct obstack
*obstack
)
287 return make_cleanup (do_obstack_free
, obstack
);
291 do_ui_file_delete (void *arg
)
293 ui_file_delete (arg
);
297 make_cleanup_ui_file_delete (struct ui_file
*arg
)
299 return make_my_cleanup (&cleanup_chain
, do_ui_file_delete
, arg
);
302 /* Helper function for make_cleanup_ui_out_redirect_pop. */
305 do_ui_out_redirect_pop (void *arg
)
307 struct ui_out
*uiout
= arg
;
309 if (ui_out_redirect (uiout
, NULL
) < 0)
310 warning (_("Cannot restore redirection of the current output protocol"));
313 /* Return a new cleanup that pops the last redirection by ui_out_redirect
314 with NULL parameter. */
317 make_cleanup_ui_out_redirect_pop (struct ui_out
*uiout
)
319 return make_my_cleanup (&cleanup_chain
, do_ui_out_redirect_pop
, uiout
);
323 do_free_section_addr_info (void *arg
)
325 free_section_addr_info (arg
);
329 make_cleanup_free_section_addr_info (struct section_addr_info
*addrs
)
331 return make_my_cleanup (&cleanup_chain
, do_free_section_addr_info
, addrs
);
334 struct restore_integer_closure
341 restore_integer (void *p
)
343 struct restore_integer_closure
*closure
= p
;
345 *(closure
->variable
) = closure
->value
;
348 /* Remember the current value of *VARIABLE and make it restored when
349 the cleanup is run. */
352 make_cleanup_restore_integer (int *variable
)
354 struct restore_integer_closure
*c
=
355 xmalloc (sizeof (struct restore_integer_closure
));
357 c
->variable
= variable
;
358 c
->value
= *variable
;
360 return make_my_cleanup2 (&cleanup_chain
, restore_integer
, (void *)c
,
364 /* Remember the current value of *VARIABLE and make it restored when
365 the cleanup is run. */
368 make_cleanup_restore_uinteger (unsigned int *variable
)
370 return make_cleanup_restore_integer ((int *) variable
);
373 /* Helper for make_cleanup_unpush_target. */
376 do_unpush_target (void *arg
)
378 struct target_ops
*ops
= arg
;
383 /* Return a new cleanup that unpushes OPS. */
386 make_cleanup_unpush_target (struct target_ops
*ops
)
388 return make_my_cleanup (&cleanup_chain
, do_unpush_target
, ops
);
391 /* Helper for make_cleanup_htab_delete compile time checking the types. */
394 do_htab_delete_cleanup (void *htab_voidp
)
396 htab_t htab
= htab_voidp
;
401 /* Return a new cleanup that deletes HTAB. */
404 make_cleanup_htab_delete (htab_t htab
)
406 return make_cleanup (do_htab_delete_cleanup
, htab
);
409 struct restore_ui_file_closure
411 struct ui_file
**variable
;
412 struct ui_file
*value
;
416 do_restore_ui_file (void *p
)
418 struct restore_ui_file_closure
*closure
= p
;
420 *(closure
->variable
) = closure
->value
;
423 /* Remember the current value of *VARIABLE and make it restored when
424 the cleanup is run. */
427 make_cleanup_restore_ui_file (struct ui_file
**variable
)
429 struct restore_ui_file_closure
*c
= XNEW (struct restore_ui_file_closure
);
431 c
->variable
= variable
;
432 c
->value
= *variable
;
434 return make_cleanup_dtor (do_restore_ui_file
, (void *) c
, xfree
);
437 /* Helper for make_cleanup_value_free_to_mark. */
440 do_value_free_to_mark (void *value
)
442 value_free_to_mark ((struct value
*) value
);
445 /* Free all values allocated since MARK was obtained by value_mark
446 (except for those released) when the cleanup is run. */
449 make_cleanup_value_free_to_mark (struct value
*mark
)
451 return make_my_cleanup (&cleanup_chain
, do_value_free_to_mark
, mark
);
454 /* Helper for make_cleanup_value_free. */
457 do_value_free (void *value
)
465 make_cleanup_value_free (struct value
*value
)
467 return make_my_cleanup (&cleanup_chain
, do_value_free
, value
);
470 /* Helper for make_cleanup_free_so. */
473 do_free_so (void *arg
)
475 struct so_list
*so
= arg
;
480 /* Make cleanup handler calling free_so for SO. */
483 make_cleanup_free_so (struct so_list
*so
)
485 return make_my_cleanup (&cleanup_chain
, do_free_so
, so
);
489 make_my_cleanup2 (struct cleanup
**pmy_chain
, make_cleanup_ftype
*function
,
490 void *arg
, void (*free_arg
) (void *))
493 = (struct cleanup
*) xmalloc (sizeof (struct cleanup
));
494 struct cleanup
*old_chain
= *pmy_chain
;
496 new->next
= *pmy_chain
;
497 new->function
= function
;
498 new->free_arg
= free_arg
;
506 make_my_cleanup (struct cleanup
**pmy_chain
, make_cleanup_ftype
*function
,
509 return make_my_cleanup2 (pmy_chain
, function
, arg
, NULL
);
512 /* Discard cleanups and do the actions they describe
513 until we get back to the point OLD_CHAIN in the cleanup_chain. */
516 do_cleanups (struct cleanup
*old_chain
)
518 do_my_cleanups (&cleanup_chain
, old_chain
);
522 do_final_cleanups (struct cleanup
*old_chain
)
524 do_my_cleanups (&final_cleanup_chain
, old_chain
);
528 do_my_cleanups (struct cleanup
**pmy_chain
,
529 struct cleanup
*old_chain
)
533 while ((ptr
= *pmy_chain
) != old_chain
)
535 *pmy_chain
= ptr
->next
; /* Do this first in case of recursion. */
536 (*ptr
->function
) (ptr
->arg
);
538 (*ptr
->free_arg
) (ptr
->arg
);
543 /* Discard cleanups, not doing the actions they describe,
544 until we get back to the point OLD_CHAIN in the cleanup_chain. */
547 discard_cleanups (struct cleanup
*old_chain
)
549 discard_my_cleanups (&cleanup_chain
, old_chain
);
553 discard_final_cleanups (struct cleanup
*old_chain
)
555 discard_my_cleanups (&final_cleanup_chain
, old_chain
);
559 discard_my_cleanups (struct cleanup
**pmy_chain
,
560 struct cleanup
*old_chain
)
564 while ((ptr
= *pmy_chain
) != old_chain
)
566 *pmy_chain
= ptr
->next
;
568 (*ptr
->free_arg
) (ptr
->arg
);
573 /* Set the cleanup_chain to 0, and return the old cleanup chain. */
577 return save_my_cleanups (&cleanup_chain
);
581 save_final_cleanups (void)
583 return save_my_cleanups (&final_cleanup_chain
);
587 save_my_cleanups (struct cleanup
**pmy_chain
)
589 struct cleanup
*old_chain
= *pmy_chain
;
595 /* Restore the cleanup chain from a previously saved chain. */
597 restore_cleanups (struct cleanup
*chain
)
599 restore_my_cleanups (&cleanup_chain
, chain
);
603 restore_final_cleanups (struct cleanup
*chain
)
605 restore_my_cleanups (&final_cleanup_chain
, chain
);
609 restore_my_cleanups (struct cleanup
**pmy_chain
, struct cleanup
*chain
)
614 /* This function is useful for cleanups.
618 old_chain = make_cleanup (free_current_contents, &foo);
620 to arrange to free the object thus allocated. */
623 free_current_contents (void *ptr
)
625 void **location
= ptr
;
627 if (location
== NULL
)
628 internal_error (__FILE__
, __LINE__
,
629 _("free_current_contents: NULL pointer"));
630 if (*location
!= NULL
)
637 /* Provide a known function that does nothing, to use as a base for
638 a possibly long chain of cleanups. This is useful where we
639 use the cleanup chain for handling normal cleanups as well as dealing
640 with cleanups that need to be done as a result of a call to error().
641 In such cases, we may not be certain where the first cleanup is, unless
642 we have a do-nothing one to always use as the base. */
645 null_cleanup (void *arg
)
649 /* If nonzero, display time usage both at startup and for each command. */
651 static int display_time
;
653 /* If nonzero, display space usage both at startup and for each command. */
655 static int display_space
;
657 /* Records a run time and space usage to be used as a base for
658 reporting elapsed time or change in space. In addition,
659 the msg_type field indicates whether the saved time is from the
660 beginning of GDB execution (0) or the beginning of an individual
661 command execution (1). */
666 struct timeval start_wall_time
;
670 /* Set whether to display time statistics to NEW_VALUE (non-zero
673 set_display_time (int new_value
)
675 display_time
= new_value
;
678 /* Set whether to display space statistics to NEW_VALUE (non-zero
681 set_display_space (int new_value
)
683 display_space
= new_value
;
686 /* As indicated by display_time and display_space, report GDB's elapsed time
687 and space usage from the base time and space provided in ARG, which
688 must be a pointer to a struct cmd_stat. This function is intended
689 to be called as a cleanup. */
691 report_command_stats (void *arg
)
693 struct cmd_stats
*start_stats
= (struct cmd_stats
*) arg
;
694 int msg_type
= start_stats
->msg_type
;
698 long cmd_time
= get_run_time () - start_stats
->start_cpu_time
;
699 struct timeval now_wall_time
, delta_wall_time
;
701 gettimeofday (&now_wall_time
, NULL
);
702 timeval_sub (&delta_wall_time
,
703 &now_wall_time
, &start_stats
->start_wall_time
);
705 printf_unfiltered (msg_type
== 0
706 ? _("Startup time: %ld.%06ld (cpu), %ld.%06ld (wall)\n")
707 : _("Command execution time: %ld.%06ld (cpu), %ld.%06ld (wall)\n"),
708 cmd_time
/ 1000000, cmd_time
% 1000000,
709 (long) delta_wall_time
.tv_sec
,
710 (long) delta_wall_time
.tv_usec
);
716 char *lim
= (char *) sbrk (0);
718 long space_now
= lim
- lim_at_start
;
719 long space_diff
= space_now
- start_stats
->start_space
;
721 printf_unfiltered (msg_type
== 0
722 ? _("Space used: %ld (%s%ld during startup)\n")
723 : _("Space used: %ld (%s%ld for this command)\n"),
725 (space_diff
>= 0 ? "+" : ""),
731 /* Create a cleanup that reports time and space used since its
732 creation. Precise messages depend on MSG_TYPE:
733 0: Initial time/space
734 1: Individual command time/space. */
736 make_command_stats_cleanup (int msg_type
)
738 struct cmd_stats
*new_stat
= XMALLOC (struct cmd_stats
);
741 char *lim
= (char *) sbrk (0);
742 new_stat
->start_space
= lim
- lim_at_start
;
745 new_stat
->msg_type
= msg_type
;
746 new_stat
->start_cpu_time
= get_run_time ();
747 gettimeofday (&new_stat
->start_wall_time
, NULL
);
749 return make_cleanup_dtor (report_command_stats
, new_stat
, xfree
);
754 /* Print a warning message. The first argument STRING is the warning
755 message, used as an fprintf format string, the second is the
756 va_list of arguments for that string. A warning is unfiltered (not
757 paginated) so that the user does not need to page through each
758 screen full of warnings when there are lots of them. */
761 vwarning (const char *string
, va_list args
)
763 if (deprecated_warning_hook
)
764 (*deprecated_warning_hook
) (string
, args
);
767 target_terminal_ours ();
768 wrap_here (""); /* Force out any buffered output. */
769 gdb_flush (gdb_stdout
);
770 if (warning_pre_print
)
771 fputs_unfiltered (warning_pre_print
, gdb_stderr
);
772 vfprintf_unfiltered (gdb_stderr
, string
, args
);
773 fprintf_unfiltered (gdb_stderr
, "\n");
778 /* Print a warning message.
779 The first argument STRING is the warning message, used as a fprintf string,
780 and the remaining args are passed as arguments to it.
781 The primary difference between warnings and errors is that a warning
782 does not force the return to command level. */
785 warning (const char *string
, ...)
789 va_start (args
, string
);
790 vwarning (string
, args
);
794 /* Print an error message and return to command level.
795 The first argument STRING is the error message, used as a fprintf string,
796 and the remaining args are passed as arguments to it. */
799 verror (const char *string
, va_list args
)
801 throw_verror (GENERIC_ERROR
, string
, args
);
805 error (const char *string
, ...)
809 va_start (args
, string
);
810 throw_verror (GENERIC_ERROR
, string
, args
);
814 /* Print an error message and quit.
815 The first argument STRING is the error message, used as a fprintf string,
816 and the remaining args are passed as arguments to it. */
819 vfatal (const char *string
, va_list args
)
821 throw_vfatal (string
, args
);
825 fatal (const char *string
, ...)
829 va_start (args
, string
);
830 throw_vfatal (string
, args
);
835 error_stream (struct ui_file
*stream
)
837 char *message
= ui_file_xstrdup (stream
, NULL
);
839 make_cleanup (xfree
, message
);
840 error (("%s"), message
);
843 /* Dump core trying to increase the core soft limit to hard limit first. */
848 #ifdef HAVE_SETRLIMIT
849 struct rlimit rlim
= { RLIM_INFINITY
, RLIM_INFINITY
};
851 setrlimit (RLIMIT_CORE
, &rlim
);
852 #endif /* HAVE_SETRLIMIT */
854 abort (); /* NOTE: GDB has only three calls to abort(). */
857 /* Check whether GDB will be able to dump core using the dump_core
861 can_dump_core (const char *reason
)
863 #ifdef HAVE_GETRLIMIT
866 /* Be quiet and assume we can dump if an error is returned. */
867 if (getrlimit (RLIMIT_CORE
, &rlim
) != 0)
870 if (rlim
.rlim_max
== 0)
872 fprintf_unfiltered (gdb_stderr
,
873 _("%s\nUnable to dump core, use `ulimit -c"
874 " unlimited' before executing GDB next time.\n"),
878 #endif /* HAVE_GETRLIMIT */
883 /* Allow the user to configure the debugger behavior with respect to
884 what to do when an internal problem is detected. */
886 const char internal_problem_ask
[] = "ask";
887 const char internal_problem_yes
[] = "yes";
888 const char internal_problem_no
[] = "no";
889 static const char *const internal_problem_modes
[] =
891 internal_problem_ask
,
892 internal_problem_yes
,
897 /* Print a message reporting an internal error/warning. Ask the user
898 if they want to continue, dump core, or just exit. Return
899 something to indicate a quit. */
901 struct internal_problem
904 const char *should_quit
;
905 const char *should_dump_core
;
908 /* Report a problem, internal to GDB, to the user. Once the problem
909 has been reported, and assuming GDB didn't quit, the caller can
910 either allow execution to resume or throw an error. */
912 static void ATTRIBUTE_PRINTF (4, 0)
913 internal_vproblem (struct internal_problem
*problem
,
914 const char *file
, int line
, const char *fmt
, va_list ap
)
921 /* Don't allow infinite error/warning recursion. */
923 static char msg
[] = "Recursive internal problem.\n";
932 fputs_unfiltered (msg
, gdb_stderr
);
933 abort (); /* NOTE: GDB has only three calls to abort(). */
936 /* Newer GLIBC versions put the warn_unused_result attribute
937 on write, but this is one of those rare cases where
938 ignoring the return value is correct. Casting to (void)
939 does not fix this problem. This is the solution suggested
940 at http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25509. */
941 if (write (STDERR_FILENO
, msg
, sizeof (msg
)) != sizeof (msg
))
942 abort (); /* NOTE: GDB has only three calls to abort(). */
947 /* Try to get the message out and at the start of a new line. */
948 target_terminal_ours ();
951 /* Create a string containing the full error/warning message. Need
952 to call query with this full string, as otherwize the reason
953 (error/warning) and question become separated. Format using a
954 style similar to a compiler error message. Include extra detail
955 so that the user knows that they are living on the edge. */
959 msg
= xstrvprintf (fmt
, ap
);
960 reason
= xstrprintf ("%s:%d: %s: %s\n"
961 "A problem internal to GDB has been detected,\n"
962 "further debugging may prove unreliable.",
963 file
, line
, problem
->name
, msg
);
965 make_cleanup (xfree
, reason
);
968 if (problem
->should_quit
== internal_problem_ask
)
970 /* Default (yes/batch case) is to quit GDB. When in batch mode
971 this lessens the likelihood of GDB going into an infinite
975 /* Emit the message and quit. */
976 fputs_unfiltered (reason
, gdb_stderr
);
977 fputs_unfiltered ("\n", gdb_stderr
);
981 quit_p
= query (_("%s\nQuit this debugging session? "), reason
);
983 else if (problem
->should_quit
== internal_problem_yes
)
985 else if (problem
->should_quit
== internal_problem_no
)
988 internal_error (__FILE__
, __LINE__
, _("bad switch"));
990 if (problem
->should_dump_core
== internal_problem_ask
)
992 if (!can_dump_core (reason
))
996 /* Default (yes/batch case) is to dump core. This leaves a GDB
997 `dropping' so that it is easier to see that something went
999 dump_core_p
= query (_("%s\nCreate a core file of GDB? "), reason
);
1002 else if (problem
->should_dump_core
== internal_problem_yes
)
1003 dump_core_p
= can_dump_core (reason
);
1004 else if (problem
->should_dump_core
== internal_problem_no
)
1007 internal_error (__FILE__
, __LINE__
, _("bad switch"));
1020 #ifdef HAVE_WORKING_FORK
1030 static struct internal_problem internal_error_problem
= {
1031 "internal-error", internal_problem_ask
, internal_problem_ask
1035 internal_verror (const char *file
, int line
, const char *fmt
, va_list ap
)
1037 internal_vproblem (&internal_error_problem
, file
, line
, fmt
, ap
);
1038 deprecated_throw_reason (RETURN_ERROR
);
1042 internal_error (const char *file
, int line
, const char *string
, ...)
1046 va_start (ap
, string
);
1047 internal_verror (file
, line
, string
, ap
);
1051 static struct internal_problem internal_warning_problem
= {
1052 "internal-warning", internal_problem_ask
, internal_problem_ask
1056 internal_vwarning (const char *file
, int line
, const char *fmt
, va_list ap
)
1058 internal_vproblem (&internal_warning_problem
, file
, line
, fmt
, ap
);
1062 internal_warning (const char *file
, int line
, const char *string
, ...)
1066 va_start (ap
, string
);
1067 internal_vwarning (file
, line
, string
, ap
);
1071 /* Dummy functions to keep add_prefix_cmd happy. */
1074 set_internal_problem_cmd (char *args
, int from_tty
)
1079 show_internal_problem_cmd (char *args
, int from_tty
)
1083 /* When GDB reports an internal problem (error or warning) it gives
1084 the user the opportunity to quit GDB and/or create a core file of
1085 the current debug session. This function registers a few commands
1086 that make it possible to specify that GDB should always or never
1087 quit or create a core file, without asking. The commands look
1090 maint set PROBLEM-NAME quit ask|yes|no
1091 maint show PROBLEM-NAME quit
1092 maint set PROBLEM-NAME corefile ask|yes|no
1093 maint show PROBLEM-NAME corefile
1095 Where PROBLEM-NAME is currently "internal-error" or
1096 "internal-warning". */
1099 add_internal_problem_command (struct internal_problem
*problem
)
1101 struct cmd_list_element
**set_cmd_list
;
1102 struct cmd_list_element
**show_cmd_list
;
1106 set_cmd_list
= xmalloc (sizeof (*set_cmd_list
));
1107 show_cmd_list
= xmalloc (sizeof (*set_cmd_list
));
1108 *set_cmd_list
= NULL
;
1109 *show_cmd_list
= NULL
;
1111 set_doc
= xstrprintf (_("Configure what GDB does when %s is detected."),
1114 show_doc
= xstrprintf (_("Show what GDB does when %s is detected."),
1117 add_prefix_cmd ((char*) problem
->name
,
1118 class_maintenance
, set_internal_problem_cmd
, set_doc
,
1120 concat ("maintenance set ", problem
->name
, " ",
1122 0/*allow-unknown*/, &maintenance_set_cmdlist
);
1124 add_prefix_cmd ((char*) problem
->name
,
1125 class_maintenance
, show_internal_problem_cmd
, show_doc
,
1127 concat ("maintenance show ", problem
->name
, " ",
1129 0/*allow-unknown*/, &maintenance_show_cmdlist
);
1131 set_doc
= xstrprintf (_("Set whether GDB should quit "
1132 "when an %s is detected"),
1134 show_doc
= xstrprintf (_("Show whether GDB will quit "
1135 "when an %s is detected"),
1137 add_setshow_enum_cmd ("quit", class_maintenance
,
1138 internal_problem_modes
,
1139 &problem
->should_quit
,
1142 NULL
, /* help_doc */
1144 NULL
, /* showfunc */
1151 set_doc
= xstrprintf (_("Set whether GDB should create a core "
1152 "file of GDB when %s is detected"),
1154 show_doc
= xstrprintf (_("Show whether GDB will create a core "
1155 "file of GDB when %s is detected"),
1157 add_setshow_enum_cmd ("corefile", class_maintenance
,
1158 internal_problem_modes
,
1159 &problem
->should_dump_core
,
1162 NULL
, /* help_doc */
1164 NULL
, /* showfunc */
1172 /* Print the system error message for errno, and also mention STRING
1173 as the file name for which the error was encountered.
1174 Then return to command level. */
1177 perror_with_name (const char *string
)
1182 err
= safe_strerror (errno
);
1183 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
1184 strcpy (combined
, string
);
1185 strcat (combined
, ": ");
1186 strcat (combined
, err
);
1188 /* I understand setting these is a matter of taste. Still, some people
1189 may clear errno but not know about bfd_error. Doing this here is not
1191 bfd_set_error (bfd_error_no_error
);
1194 error (_("%s."), combined
);
1197 /* Print the system error message for ERRCODE, and also mention STRING
1198 as the file name for which the error was encountered. */
1201 print_sys_errmsg (const char *string
, int errcode
)
1206 err
= safe_strerror (errcode
);
1207 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
1208 strcpy (combined
, string
);
1209 strcat (combined
, ": ");
1210 strcat (combined
, err
);
1212 /* We want anything which was printed on stdout to come out first, before
1214 gdb_flush (gdb_stdout
);
1215 fprintf_unfiltered (gdb_stderr
, "%s.\n", combined
);
1218 /* Control C eventually causes this to be called, at a convenient time. */
1224 /* No steenking SIGINT will ever be coming our way when the
1225 program is resumed. Don't lie. */
1229 /* If there is no terminal switching for this target, then we can't
1230 possibly get screwed by the lack of job control. */
1231 || current_target
.to_terminal_ours
== NULL
)
1234 fatal ("Quit (expect signal SIGINT when the program is resumed)");
1239 /* Called when a memory allocation fails, with the number of bytes of
1240 memory requested in SIZE. */
1243 malloc_failure (long size
)
1247 internal_error (__FILE__
, __LINE__
,
1248 _("virtual memory exhausted: can't allocate %ld bytes."),
1253 internal_error (__FILE__
, __LINE__
, _("virtual memory exhausted."));
1257 /* My replacement for the read system call.
1258 Used like `read' but keeps going if `read' returns too soon. */
1261 myread (int desc
, char *addr
, int len
)
1268 val
= read (desc
, addr
, len
);
1272 return orglen
- len
;
1279 /* Make a copy of the string at PTR with SIZE characters
1280 (and add a null character at the end in the copy).
1281 Uses malloc to get the space. Returns the address of the copy. */
1284 savestring (const char *ptr
, size_t size
)
1286 char *p
= (char *) xmalloc (size
+ 1);
1288 memcpy (p
, ptr
, size
);
1294 print_spaces (int n
, struct ui_file
*file
)
1296 fputs_unfiltered (n_spaces (n
), file
);
1299 /* Print a host address. */
1302 gdb_print_host_address (const void *addr
, struct ui_file
*stream
)
1304 fprintf_filtered (stream
, "%s", host_address_to_string (addr
));
1308 /* A cleanup function that calls regfree. */
1311 do_regfree_cleanup (void *r
)
1316 /* Create a new cleanup that frees the compiled regular expression R. */
1319 make_regfree_cleanup (regex_t
*r
)
1321 return make_cleanup (do_regfree_cleanup
, r
);
1324 /* Return an xmalloc'd error message resulting from a regular
1325 expression compilation failure. */
1328 get_regcomp_error (int code
, regex_t
*rx
)
1330 size_t length
= regerror (code
, rx
, NULL
, 0);
1331 char *result
= xmalloc (length
);
1333 regerror (code
, rx
, result
, length
);
1339 /* This function supports the query, nquery, and yquery functions.
1340 Ask user a y-or-n question and return 0 if answer is no, 1 if
1341 answer is yes, or default the answer to the specified default
1342 (for yquery or nquery). DEFCHAR may be 'y' or 'n' to provide a
1343 default answer, or '\0' for no default.
1344 CTLSTR is the control string and should end in "? ". It should
1345 not say how to answer, because we do that.
1346 ARGS are the arguments passed along with the CTLSTR argument to
1349 static int ATTRIBUTE_PRINTF (1, 0)
1350 defaulted_query (const char *ctlstr
, const char defchar
, va_list args
)
1356 char def_answer
, not_def_answer
;
1357 char *y_string
, *n_string
, *question
;
1359 /* Set up according to which answer is the default. */
1360 if (defchar
== '\0')
1364 not_def_answer
= 'N';
1368 else if (defchar
== 'y')
1372 not_def_answer
= 'N';
1380 not_def_answer
= 'Y';
1385 /* Automatically answer the default value if the user did not want
1386 prompts or the command was issued with the server prefix. */
1387 if (!confirm
|| server_command
)
1390 /* If input isn't coming from the user directly, just say what
1391 question we're asking, and then answer the default automatically. This
1392 way, important error messages don't get lost when talking to GDB
1394 if (! input_from_terminal_p ())
1397 vfprintf_filtered (gdb_stdout
, ctlstr
, args
);
1399 printf_filtered (_("(%s or %s) [answered %c; "
1400 "input not from terminal]\n"),
1401 y_string
, n_string
, def_answer
);
1402 gdb_flush (gdb_stdout
);
1407 if (deprecated_query_hook
)
1409 return deprecated_query_hook (ctlstr
, args
);
1412 /* Format the question outside of the loop, to avoid reusing args. */
1413 question
= xstrvprintf (ctlstr
, args
);
1417 wrap_here (""); /* Flush any buffered output. */
1418 gdb_flush (gdb_stdout
);
1420 if (annotation_level
> 1)
1421 printf_filtered (("\n\032\032pre-query\n"));
1423 fputs_filtered (question
, gdb_stdout
);
1424 printf_filtered (_("(%s or %s) "), y_string
, n_string
);
1426 if (annotation_level
> 1)
1427 printf_filtered (("\n\032\032query\n"));
1430 gdb_flush (gdb_stdout
);
1432 answer
= fgetc (stdin
);
1434 /* We expect fgetc to block until a character is read. But
1435 this may not be the case if the terminal was opened with
1436 the NONBLOCK flag. In that case, if there is nothing to
1437 read on stdin, fgetc returns EOF, but also sets the error
1438 condition flag on stdin and errno to EAGAIN. With a true
1439 EOF, stdin's error condition flag is not set.
1441 A situation where this behavior was observed is a pseudo
1443 while (answer
== EOF
&& ferror (stdin
) && errno
== EAGAIN
)
1445 /* Not a real EOF. Wait a little while and try again until
1446 we read something. */
1449 answer
= fgetc (stdin
);
1452 clearerr (stdin
); /* in case of C-d */
1453 if (answer
== EOF
) /* C-d */
1455 printf_filtered ("EOF [assumed %c]\n", def_answer
);
1459 /* Eat rest of input line, to EOF or newline. */
1463 ans2
= fgetc (stdin
);
1466 while (ans2
!= EOF
&& ans2
!= '\n' && ans2
!= '\r');
1470 /* Check answer. For the non-default, the user must specify
1471 the non-default explicitly. */
1472 if (answer
== not_def_answer
)
1474 retval
= !def_value
;
1477 /* Otherwise, if a default was specified, the user may either
1478 specify the required input or have it default by entering
1480 if (answer
== def_answer
1481 || (defchar
!= '\0' &&
1482 (answer
== '\n' || answer
== '\r' || answer
== EOF
)))
1487 /* Invalid entries are not defaulted and require another selection. */
1488 printf_filtered (_("Please answer %s or %s.\n"),
1489 y_string
, n_string
);
1493 if (annotation_level
> 1)
1494 printf_filtered (("\n\032\032post-query\n"));
1499 /* Ask user a y-or-n question and return 0 if answer is no, 1 if
1500 answer is yes, or 0 if answer is defaulted.
1501 Takes three args which are given to printf to print the question.
1502 The first, a control string, should end in "? ".
1503 It should not say how to answer, because we do that. */
1506 nquery (const char *ctlstr
, ...)
1511 va_start (args
, ctlstr
);
1512 ret
= defaulted_query (ctlstr
, 'n', args
);
1517 /* Ask user a y-or-n question and return 0 if answer is no, 1 if
1518 answer is yes, or 1 if answer is defaulted.
1519 Takes three args which are given to printf to print the question.
1520 The first, a control string, should end in "? ".
1521 It should not say how to answer, because we do that. */
1524 yquery (const char *ctlstr
, ...)
1529 va_start (args
, ctlstr
);
1530 ret
= defaulted_query (ctlstr
, 'y', args
);
1535 /* Ask user a y-or-n question and return 1 iff answer is yes.
1536 Takes three args which are given to printf to print the question.
1537 The first, a control string, should end in "? ".
1538 It should not say how to answer, because we do that. */
1541 query (const char *ctlstr
, ...)
1546 va_start (args
, ctlstr
);
1547 ret
= defaulted_query (ctlstr
, '\0', args
);
1552 /* A helper for parse_escape that converts a host character to a
1553 target character. C is the host character. If conversion is
1554 possible, then the target character is stored in *TARGET_C and the
1555 function returns 1. Otherwise, the function returns 0. */
1558 host_char_to_target (struct gdbarch
*gdbarch
, int c
, int *target_c
)
1560 struct obstack host_data
;
1562 struct cleanup
*cleanups
;
1565 obstack_init (&host_data
);
1566 cleanups
= make_cleanup_obstack_free (&host_data
);
1568 convert_between_encodings (target_charset (gdbarch
), host_charset (),
1569 &the_char
, 1, 1, &host_data
, translit_none
);
1571 if (obstack_object_size (&host_data
) == 1)
1574 *target_c
= *(char *) obstack_base (&host_data
);
1577 do_cleanups (cleanups
);
1581 /* Parse a C escape sequence. STRING_PTR points to a variable
1582 containing a pointer to the string to parse. That pointer
1583 should point to the character after the \. That pointer
1584 is updated past the characters we use. The value of the
1585 escape sequence is returned.
1587 A negative value means the sequence \ newline was seen,
1588 which is supposed to be equivalent to nothing at all.
1590 If \ is followed by a null character, we return a negative
1591 value and leave the string pointer pointing at the null character.
1593 If \ is followed by 000, we return 0 and leave the string pointer
1594 after the zeros. A value of 0 does not mean end of string. */
1597 parse_escape (struct gdbarch
*gdbarch
, char **string_ptr
)
1599 int target_char
= -2; /* Initialize to avoid GCC warnings. */
1600 int c
= *(*string_ptr
)++;
1619 int i
= host_hex_value (c
);
1624 if (isdigit (c
) && c
!= '8' && c
!= '9')
1628 i
+= host_hex_value (c
);
1664 if (!host_char_to_target (gdbarch
, c
, &target_char
))
1665 error (_("The escape sequence `\\%c' is equivalent to plain `%c',"
1666 " which has no equivalent\nin the `%s' character set."),
1667 c
, c
, target_charset (gdbarch
));
1671 /* Print the character C on STREAM as part of the contents of a literal
1672 string whose delimiter is QUOTER. Note that this routine should only
1673 be call for printing things which are independent of the language
1674 of the program being debugged. */
1677 printchar (int c
, void (*do_fputs
) (const char *, struct ui_file
*),
1678 void (*do_fprintf
) (struct ui_file
*, const char *, ...)
1679 ATTRIBUTE_FPTR_PRINTF_2
, struct ui_file
*stream
, int quoter
)
1681 c
&= 0xFF; /* Avoid sign bit follies */
1683 if (c
< 0x20 || /* Low control chars */
1684 (c
>= 0x7F && c
< 0xA0) || /* DEL, High controls */
1685 (sevenbit_strings
&& c
>= 0x80))
1686 { /* high order bit set */
1690 do_fputs ("\\n", stream
);
1693 do_fputs ("\\b", stream
);
1696 do_fputs ("\\t", stream
);
1699 do_fputs ("\\f", stream
);
1702 do_fputs ("\\r", stream
);
1705 do_fputs ("\\e", stream
);
1708 do_fputs ("\\a", stream
);
1711 do_fprintf (stream
, "\\%.3o", (unsigned int) c
);
1717 if (c
== '\\' || c
== quoter
)
1718 do_fputs ("\\", stream
);
1719 do_fprintf (stream
, "%c", c
);
1723 /* Print the character C on STREAM as part of the contents of a
1724 literal string whose delimiter is QUOTER. Note that these routines
1725 should only be call for printing things which are independent of
1726 the language of the program being debugged. */
1729 fputstr_filtered (const char *str
, int quoter
, struct ui_file
*stream
)
1732 printchar (*str
++, fputs_filtered
, fprintf_filtered
, stream
, quoter
);
1736 fputstr_unfiltered (const char *str
, int quoter
, struct ui_file
*stream
)
1739 printchar (*str
++, fputs_unfiltered
, fprintf_unfiltered
, stream
, quoter
);
1743 fputstrn_filtered (const char *str
, int n
, int quoter
,
1744 struct ui_file
*stream
)
1748 for (i
= 0; i
< n
; i
++)
1749 printchar (str
[i
], fputs_filtered
, fprintf_filtered
, stream
, quoter
);
1753 fputstrn_unfiltered (const char *str
, int n
, int quoter
,
1754 struct ui_file
*stream
)
1758 for (i
= 0; i
< n
; i
++)
1759 printchar (str
[i
], fputs_unfiltered
, fprintf_unfiltered
, stream
, quoter
);
1763 /* Number of lines per page or UINT_MAX if paging is disabled. */
1764 static unsigned int lines_per_page
;
1766 show_lines_per_page (struct ui_file
*file
, int from_tty
,
1767 struct cmd_list_element
*c
, const char *value
)
1769 fprintf_filtered (file
,
1770 _("Number of lines gdb thinks are in a page is %s.\n"),
1774 /* Number of chars per line or UINT_MAX if line folding is disabled. */
1775 static unsigned int chars_per_line
;
1777 show_chars_per_line (struct ui_file
*file
, int from_tty
,
1778 struct cmd_list_element
*c
, const char *value
)
1780 fprintf_filtered (file
,
1781 _("Number of characters gdb thinks "
1782 "are in a line is %s.\n"),
1786 /* Current count of lines printed on this page, chars on this line. */
1787 static unsigned int lines_printed
, chars_printed
;
1789 /* Buffer and start column of buffered text, for doing smarter word-
1790 wrapping. When someone calls wrap_here(), we start buffering output
1791 that comes through fputs_filtered(). If we see a newline, we just
1792 spit it out and forget about the wrap_here(). If we see another
1793 wrap_here(), we spit it out and remember the newer one. If we see
1794 the end of the line, we spit out a newline, the indent, and then
1795 the buffered output. */
1797 /* Malloc'd buffer with chars_per_line+2 bytes. Contains characters which
1798 are waiting to be output (they have already been counted in chars_printed).
1799 When wrap_buffer[0] is null, the buffer is empty. */
1800 static char *wrap_buffer
;
1802 /* Pointer in wrap_buffer to the next character to fill. */
1803 static char *wrap_pointer
;
1805 /* String to indent by if the wrap occurs. Must not be NULL if wrap_column
1807 static char *wrap_indent
;
1809 /* Column number on the screen where wrap_buffer begins, or 0 if wrapping
1810 is not in effect. */
1811 static int wrap_column
;
1814 /* Inialize the number of lines per page and chars per line. */
1817 init_page_info (void)
1821 lines_per_page
= UINT_MAX
;
1822 chars_per_line
= UINT_MAX
;
1826 if (!tui_get_command_dimension (&chars_per_line
, &lines_per_page
))
1831 #if defined(__GO32__)
1832 rows
= ScreenRows ();
1833 cols
= ScreenCols ();
1834 lines_per_page
= rows
;
1835 chars_per_line
= cols
;
1837 /* Make sure Readline has initialized its terminal settings. */
1838 rl_reset_terminal (NULL
);
1840 /* Get the screen size from Readline. */
1841 rl_get_screen_size (&rows
, &cols
);
1842 lines_per_page
= rows
;
1843 chars_per_line
= cols
;
1845 /* Readline should have fetched the termcap entry for us. */
1846 if (tgetnum ("li") < 0 || getenv ("EMACS"))
1848 /* The number of lines per page is not mentioned in the
1849 terminal description. This probably means that paging is
1850 not useful (e.g. emacs shell window), so disable paging. */
1851 lines_per_page
= UINT_MAX
;
1854 /* FIXME: Get rid of this junk. */
1855 #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER)
1856 SIGWINCH_HANDLER (SIGWINCH
);
1859 /* If the output is not a terminal, don't paginate it. */
1860 if (!ui_file_isatty (gdb_stdout
))
1861 lines_per_page
= UINT_MAX
;
1869 /* Helper for make_cleanup_restore_page_info. */
1872 do_restore_page_info_cleanup (void *arg
)
1878 /* Provide cleanup for restoring the terminal size. */
1881 make_cleanup_restore_page_info (void)
1883 struct cleanup
*back_to
;
1885 back_to
= make_cleanup (do_restore_page_info_cleanup
, NULL
);
1886 make_cleanup_restore_uinteger (&lines_per_page
);
1887 make_cleanup_restore_uinteger (&chars_per_line
);
1892 /* Temporarily set BATCH_FLAG and the associated unlimited terminal size.
1893 Provide cleanup for restoring the original state. */
1896 set_batch_flag_and_make_cleanup_restore_page_info (void)
1898 struct cleanup
*back_to
= make_cleanup_restore_page_info ();
1900 make_cleanup_restore_integer (&batch_flag
);
1907 /* Set the screen size based on LINES_PER_PAGE and CHARS_PER_LINE. */
1910 set_screen_size (void)
1912 int rows
= lines_per_page
;
1913 int cols
= chars_per_line
;
1921 /* Update Readline's idea of the terminal size. */
1922 rl_set_screen_size (rows
, cols
);
1925 /* Reinitialize WRAP_BUFFER according to the current value of
1931 if (chars_per_line
== 0)
1936 wrap_buffer
= (char *) xmalloc (chars_per_line
+ 2);
1937 wrap_buffer
[0] = '\0';
1940 wrap_buffer
= (char *) xrealloc (wrap_buffer
, chars_per_line
+ 2);
1941 wrap_pointer
= wrap_buffer
; /* Start it at the beginning. */
1945 set_width_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
1952 set_height_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
1957 /* Wait, so the user can read what's on the screen. Prompt the user
1958 to continue by pressing RETURN. */
1961 prompt_for_continue (void)
1964 char cont_prompt
[120];
1966 if (annotation_level
> 1)
1967 printf_unfiltered (("\n\032\032pre-prompt-for-continue\n"));
1969 strcpy (cont_prompt
,
1970 "---Type <return> to continue, or q <return> to quit---");
1971 if (annotation_level
> 1)
1972 strcat (cont_prompt
, "\n\032\032prompt-for-continue\n");
1974 /* We must do this *before* we call gdb_readline, else it will eventually
1975 call us -- thinking that we're trying to print beyond the end of the
1977 reinitialize_more_filter ();
1980 /* On a real operating system, the user can quit with SIGINT.
1983 'q' is provided on all systems so users don't have to change habits
1984 from system to system, and because telling them what to do in
1985 the prompt is more user-friendly than expecting them to think of
1987 /* Call readline, not gdb_readline, because GO32 readline handles control-C
1988 whereas control-C to gdb_readline will cause the user to get dumped
1990 ignore
= gdb_readline_wrapper (cont_prompt
);
1992 if (annotation_level
> 1)
1993 printf_unfiltered (("\n\032\032post-prompt-for-continue\n"));
1999 while (*p
== ' ' || *p
== '\t')
2002 async_request_quit (0);
2007 /* Now we have to do this again, so that GDB will know that it doesn't
2008 need to save the ---Type <return>--- line at the top of the screen. */
2009 reinitialize_more_filter ();
2011 dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */
2014 /* Reinitialize filter; ie. tell it to reset to original values. */
2017 reinitialize_more_filter (void)
2023 /* Indicate that if the next sequence of characters overflows the line,
2024 a newline should be inserted here rather than when it hits the end.
2025 If INDENT is non-null, it is a string to be printed to indent the
2026 wrapped part on the next line. INDENT must remain accessible until
2027 the next call to wrap_here() or until a newline is printed through
2030 If the line is already overfull, we immediately print a newline and
2031 the indentation, and disable further wrapping.
2033 If we don't know the width of lines, but we know the page height,
2034 we must not wrap words, but should still keep track of newlines
2035 that were explicitly printed.
2037 INDENT should not contain tabs, as that will mess up the char count
2038 on the next line. FIXME.
2040 This routine is guaranteed to force out any output which has been
2041 squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be
2042 used to force out output from the wrap_buffer. */
2045 wrap_here (char *indent
)
2047 /* This should have been allocated, but be paranoid anyway. */
2049 internal_error (__FILE__
, __LINE__
,
2050 _("failed internal consistency check"));
2054 *wrap_pointer
= '\0';
2055 fputs_unfiltered (wrap_buffer
, gdb_stdout
);
2057 wrap_pointer
= wrap_buffer
;
2058 wrap_buffer
[0] = '\0';
2059 if (chars_per_line
== UINT_MAX
) /* No line overflow checking. */
2063 else if (chars_printed
>= chars_per_line
)
2065 puts_filtered ("\n");
2067 puts_filtered (indent
);
2072 wrap_column
= chars_printed
;
2076 wrap_indent
= indent
;
2080 /* Print input string to gdb_stdout, filtered, with wrap,
2081 arranging strings in columns of n chars. String can be
2082 right or left justified in the column. Never prints
2083 trailing spaces. String should never be longer than
2084 width. FIXME: this could be useful for the EXAMINE
2085 command, which currently doesn't tabulate very well. */
2088 puts_filtered_tabular (char *string
, int width
, int right
)
2094 gdb_assert (chars_per_line
> 0);
2095 if (chars_per_line
== UINT_MAX
)
2097 fputs_filtered (string
, gdb_stdout
);
2098 fputs_filtered ("\n", gdb_stdout
);
2102 if (((chars_printed
- 1) / width
+ 2) * width
>= chars_per_line
)
2103 fputs_filtered ("\n", gdb_stdout
);
2105 if (width
>= chars_per_line
)
2106 width
= chars_per_line
- 1;
2108 stringlen
= strlen (string
);
2110 if (chars_printed
> 0)
2111 spaces
= width
- (chars_printed
- 1) % width
- 1;
2113 spaces
+= width
- stringlen
;
2115 spacebuf
= alloca (spaces
+ 1);
2116 spacebuf
[spaces
] = '\0';
2118 spacebuf
[spaces
] = ' ';
2120 fputs_filtered (spacebuf
, gdb_stdout
);
2121 fputs_filtered (string
, gdb_stdout
);
2125 /* Ensure that whatever gets printed next, using the filtered output
2126 commands, starts at the beginning of the line. I.e. if there is
2127 any pending output for the current line, flush it and start a new
2128 line. Otherwise do nothing. */
2133 if (chars_printed
> 0)
2135 puts_filtered ("\n");
2140 /* Like fputs but if FILTER is true, pause after every screenful.
2142 Regardless of FILTER can wrap at points other than the final
2143 character of a line.
2145 Unlike fputs, fputs_maybe_filtered does not return a value.
2146 It is OK for LINEBUFFER to be NULL, in which case just don't print
2149 Note that a longjmp to top level may occur in this routine (only if
2150 FILTER is true) (since prompt_for_continue may do so) so this
2151 routine should not be called when cleanups are not in place. */
2154 fputs_maybe_filtered (const char *linebuffer
, struct ui_file
*stream
,
2157 const char *lineptr
;
2159 if (linebuffer
== 0)
2162 /* Don't do any filtering if it is disabled. */
2163 if (stream
!= gdb_stdout
2164 || !pagination_enabled
2166 || (lines_per_page
== UINT_MAX
&& chars_per_line
== UINT_MAX
)
2167 || top_level_interpreter () == NULL
2168 || ui_out_is_mi_like_p (interp_ui_out (top_level_interpreter ())))
2170 fputs_unfiltered (linebuffer
, stream
);
2174 /* Go through and output each character. Show line extension
2175 when this is necessary; prompt user for new page when this is
2178 lineptr
= linebuffer
;
2181 /* Possible new page. */
2182 if (filter
&& (lines_printed
>= lines_per_page
- 1))
2183 prompt_for_continue ();
2185 while (*lineptr
&& *lineptr
!= '\n')
2187 /* Print a single line. */
2188 if (*lineptr
== '\t')
2191 *wrap_pointer
++ = '\t';
2193 fputc_unfiltered ('\t', stream
);
2194 /* Shifting right by 3 produces the number of tab stops
2195 we have already passed, and then adding one and
2196 shifting left 3 advances to the next tab stop. */
2197 chars_printed
= ((chars_printed
>> 3) + 1) << 3;
2203 *wrap_pointer
++ = *lineptr
;
2205 fputc_unfiltered (*lineptr
, stream
);
2210 if (chars_printed
>= chars_per_line
)
2212 unsigned int save_chars
= chars_printed
;
2216 /* If we aren't actually wrapping, don't output newline --
2217 if chars_per_line is right, we probably just overflowed
2218 anyway; if it's wrong, let us keep going. */
2220 fputc_unfiltered ('\n', stream
);
2222 /* Possible new page. */
2223 if (lines_printed
>= lines_per_page
- 1)
2224 prompt_for_continue ();
2226 /* Now output indentation and wrapped string. */
2229 fputs_unfiltered (wrap_indent
, stream
);
2230 *wrap_pointer
= '\0'; /* Null-terminate saved stuff, */
2231 fputs_unfiltered (wrap_buffer
, stream
); /* and eject it. */
2232 /* FIXME, this strlen is what prevents wrap_indent from
2233 containing tabs. However, if we recurse to print it
2234 and count its chars, we risk trouble if wrap_indent is
2235 longer than (the user settable) chars_per_line.
2236 Note also that this can set chars_printed > chars_per_line
2237 if we are printing a long string. */
2238 chars_printed
= strlen (wrap_indent
)
2239 + (save_chars
- wrap_column
);
2240 wrap_pointer
= wrap_buffer
; /* Reset buffer */
2241 wrap_buffer
[0] = '\0';
2242 wrap_column
= 0; /* And disable fancy wrap */
2247 if (*lineptr
== '\n')
2250 wrap_here ((char *) 0); /* Spit out chars, cancel
2253 fputc_unfiltered ('\n', stream
);
2260 fputs_filtered (const char *linebuffer
, struct ui_file
*stream
)
2262 fputs_maybe_filtered (linebuffer
, stream
, 1);
2266 putchar_unfiltered (int c
)
2270 ui_file_write (gdb_stdout
, &buf
, 1);
2274 /* Write character C to gdb_stdout using GDB's paging mechanism and return C.
2275 May return nonlocally. */
2278 putchar_filtered (int c
)
2280 return fputc_filtered (c
, gdb_stdout
);
2284 fputc_unfiltered (int c
, struct ui_file
*stream
)
2288 ui_file_write (stream
, &buf
, 1);
2293 fputc_filtered (int c
, struct ui_file
*stream
)
2299 fputs_filtered (buf
, stream
);
2303 /* puts_debug is like fputs_unfiltered, except it prints special
2304 characters in printable fashion. */
2307 puts_debug (char *prefix
, char *string
, char *suffix
)
2311 /* Print prefix and suffix after each line. */
2312 static int new_line
= 1;
2313 static int return_p
= 0;
2314 static char *prev_prefix
= "";
2315 static char *prev_suffix
= "";
2317 if (*string
== '\n')
2320 /* If the prefix is changing, print the previous suffix, a new line,
2321 and the new prefix. */
2322 if ((return_p
|| (strcmp (prev_prefix
, prefix
) != 0)) && !new_line
)
2324 fputs_unfiltered (prev_suffix
, gdb_stdlog
);
2325 fputs_unfiltered ("\n", gdb_stdlog
);
2326 fputs_unfiltered (prefix
, gdb_stdlog
);
2329 /* Print prefix if we printed a newline during the previous call. */
2333 fputs_unfiltered (prefix
, gdb_stdlog
);
2336 prev_prefix
= prefix
;
2337 prev_suffix
= suffix
;
2339 /* Output characters in a printable format. */
2340 while ((ch
= *string
++) != '\0')
2346 fputc_unfiltered (ch
, gdb_stdlog
);
2349 fprintf_unfiltered (gdb_stdlog
, "\\x%02x", ch
& 0xff);
2353 fputs_unfiltered ("\\\\", gdb_stdlog
);
2356 fputs_unfiltered ("\\b", gdb_stdlog
);
2359 fputs_unfiltered ("\\f", gdb_stdlog
);
2363 fputs_unfiltered ("\\n", gdb_stdlog
);
2366 fputs_unfiltered ("\\r", gdb_stdlog
);
2369 fputs_unfiltered ("\\t", gdb_stdlog
);
2372 fputs_unfiltered ("\\v", gdb_stdlog
);
2376 return_p
= ch
== '\r';
2379 /* Print suffix if we printed a newline. */
2382 fputs_unfiltered (suffix
, gdb_stdlog
);
2383 fputs_unfiltered ("\n", gdb_stdlog
);
2388 /* Print a variable number of ARGS using format FORMAT. If this
2389 information is going to put the amount written (since the last call
2390 to REINITIALIZE_MORE_FILTER or the last page break) over the page size,
2391 call prompt_for_continue to get the users permision to continue.
2393 Unlike fprintf, this function does not return a value.
2395 We implement three variants, vfprintf (takes a vararg list and stream),
2396 fprintf (takes a stream to write on), and printf (the usual).
2398 Note also that a longjmp to top level may occur in this routine
2399 (since prompt_for_continue may do so) so this routine should not be
2400 called when cleanups are not in place. */
2403 vfprintf_maybe_filtered (struct ui_file
*stream
, const char *format
,
2404 va_list args
, int filter
)
2407 struct cleanup
*old_cleanups
;
2409 linebuffer
= xstrvprintf (format
, args
);
2410 old_cleanups
= make_cleanup (xfree
, linebuffer
);
2411 fputs_maybe_filtered (linebuffer
, stream
, filter
);
2412 do_cleanups (old_cleanups
);
2417 vfprintf_filtered (struct ui_file
*stream
, const char *format
, va_list args
)
2419 vfprintf_maybe_filtered (stream
, format
, args
, 1);
2423 vfprintf_unfiltered (struct ui_file
*stream
, const char *format
, va_list args
)
2426 struct cleanup
*old_cleanups
;
2428 linebuffer
= xstrvprintf (format
, args
);
2429 old_cleanups
= make_cleanup (xfree
, linebuffer
);
2430 if (debug_timestamp
&& stream
== gdb_stdlog
)
2436 gettimeofday (&tm
, NULL
);
2438 len
= strlen (linebuffer
);
2439 need_nl
= (len
> 0 && linebuffer
[len
- 1] != '\n');
2441 timestamp
= xstrprintf ("%ld:%ld %s%s",
2442 (long) tm
.tv_sec
, (long) tm
.tv_usec
,
2444 need_nl
? "\n": "");
2445 make_cleanup (xfree
, timestamp
);
2446 fputs_unfiltered (timestamp
, stream
);
2449 fputs_unfiltered (linebuffer
, stream
);
2450 do_cleanups (old_cleanups
);
2454 vprintf_filtered (const char *format
, va_list args
)
2456 vfprintf_maybe_filtered (gdb_stdout
, format
, args
, 1);
2460 vprintf_unfiltered (const char *format
, va_list args
)
2462 vfprintf_unfiltered (gdb_stdout
, format
, args
);
2466 fprintf_filtered (struct ui_file
*stream
, const char *format
, ...)
2470 va_start (args
, format
);
2471 vfprintf_filtered (stream
, format
, args
);
2476 fprintf_unfiltered (struct ui_file
*stream
, const char *format
, ...)
2480 va_start (args
, format
);
2481 vfprintf_unfiltered (stream
, format
, args
);
2485 /* Like fprintf_filtered, but prints its result indented.
2486 Called as fprintfi_filtered (spaces, stream, format, ...); */
2489 fprintfi_filtered (int spaces
, struct ui_file
*stream
, const char *format
,
2494 va_start (args
, format
);
2495 print_spaces_filtered (spaces
, stream
);
2497 vfprintf_filtered (stream
, format
, args
);
2503 printf_filtered (const char *format
, ...)
2507 va_start (args
, format
);
2508 vfprintf_filtered (gdb_stdout
, format
, args
);
2514 printf_unfiltered (const char *format
, ...)
2518 va_start (args
, format
);
2519 vfprintf_unfiltered (gdb_stdout
, format
, args
);
2523 /* Like printf_filtered, but prints it's result indented.
2524 Called as printfi_filtered (spaces, format, ...); */
2527 printfi_filtered (int spaces
, const char *format
, ...)
2531 va_start (args
, format
);
2532 print_spaces_filtered (spaces
, gdb_stdout
);
2533 vfprintf_filtered (gdb_stdout
, format
, args
);
2537 /* Easy -- but watch out!
2539 This routine is *not* a replacement for puts()! puts() appends a newline.
2540 This one doesn't, and had better not! */
2543 puts_filtered (const char *string
)
2545 fputs_filtered (string
, gdb_stdout
);
2549 puts_unfiltered (const char *string
)
2551 fputs_unfiltered (string
, gdb_stdout
);
2554 /* Return a pointer to N spaces and a null. The pointer is good
2555 until the next call to here. */
2560 static char *spaces
= 0;
2561 static int max_spaces
= -1;
2567 spaces
= (char *) xmalloc (n
+ 1);
2568 for (t
= spaces
+ n
; t
!= spaces
;)
2574 return spaces
+ max_spaces
- n
;
2577 /* Print N spaces. */
2579 print_spaces_filtered (int n
, struct ui_file
*stream
)
2581 fputs_filtered (n_spaces (n
), stream
);
2584 /* C++/ObjC demangler stuff. */
2586 /* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language
2587 LANG, using demangling args ARG_MODE, and print it filtered to STREAM.
2588 If the name is not mangled, or the language for the name is unknown, or
2589 demangling is off, the name is printed in its "raw" form. */
2592 fprintf_symbol_filtered (struct ui_file
*stream
, const char *name
,
2593 enum language lang
, int arg_mode
)
2599 /* If user wants to see raw output, no problem. */
2602 fputs_filtered (name
, stream
);
2606 demangled
= language_demangle (language_def (lang
), name
, arg_mode
);
2607 fputs_filtered (demangled
? demangled
: name
, stream
);
2608 if (demangled
!= NULL
)
2616 /* Do a strcmp() type operation on STRING1 and STRING2, ignoring any
2617 differences in whitespace. Returns 0 if they match, non-zero if they
2618 don't (slightly different than strcmp()'s range of return values).
2620 As an extra hack, string1=="FOO(ARGS)" matches string2=="FOO".
2621 This "feature" is useful when searching for matching C++ function names
2622 (such as if the user types 'break FOO', where FOO is a mangled C++
2626 strcmp_iw (const char *string1
, const char *string2
)
2628 while ((*string1
!= '\0') && (*string2
!= '\0'))
2630 while (isspace (*string1
))
2634 while (isspace (*string2
))
2638 if (case_sensitivity
== case_sensitive_on
&& *string1
!= *string2
)
2640 if (case_sensitivity
== case_sensitive_off
2641 && (tolower ((unsigned char) *string1
)
2642 != tolower ((unsigned char) *string2
)))
2644 if (*string1
!= '\0')
2650 return (*string1
!= '\0' && *string1
!= '(') || (*string2
!= '\0');
2653 /* This is like strcmp except that it ignores whitespace and treats
2654 '(' as the first non-NULL character in terms of ordering. Like
2655 strcmp (and unlike strcmp_iw), it returns negative if STRING1 <
2656 STRING2, 0 if STRING2 = STRING2, and positive if STRING1 > STRING2
2657 according to that ordering.
2659 If a list is sorted according to this function and if you want to
2660 find names in the list that match some fixed NAME according to
2661 strcmp_iw(LIST_ELT, NAME), then the place to start looking is right
2662 where this function would put NAME.
2664 This function must be neutral to the CASE_SENSITIVITY setting as the user
2665 may choose it during later lookup. Therefore this function always sorts
2666 primarily case-insensitively and secondarily case-sensitively.
2668 Here are some examples of why using strcmp to sort is a bad idea:
2672 Say your partial symtab contains: "foo<char *>", "goo". Then, if
2673 we try to do a search for "foo<char*>", strcmp will locate this
2674 after "foo<char *>" and before "goo". Then lookup_partial_symbol
2675 will start looking at strings beginning with "goo", and will never
2676 see the correct match of "foo<char *>".
2678 Parenthesis example:
2680 In practice, this is less like to be an issue, but I'll give it a
2681 shot. Let's assume that '$' is a legitimate character to occur in
2682 symbols. (Which may well even be the case on some systems.) Then
2683 say that the partial symbol table contains "foo$" and "foo(int)".
2684 strcmp will put them in this order, since '$' < '('. Now, if the
2685 user searches for "foo", then strcmp will sort "foo" before "foo$".
2686 Then lookup_partial_symbol will notice that strcmp_iw("foo$",
2687 "foo") is false, so it won't proceed to the actual match of
2688 "foo(int)" with "foo". */
2691 strcmp_iw_ordered (const char *string1
, const char *string2
)
2693 const char *saved_string1
= string1
, *saved_string2
= string2
;
2694 enum case_sensitivity case_pass
= case_sensitive_off
;
2698 /* C1 and C2 are valid only if *string1 != '\0' && *string2 != '\0'.
2699 Provide stub characters if we are already at the end of one of the
2701 char c1
= 'X', c2
= 'X';
2703 while (*string1
!= '\0' && *string2
!= '\0')
2705 while (isspace (*string1
))
2707 while (isspace (*string2
))
2712 case case_sensitive_off
:
2713 c1
= tolower ((unsigned char) *string1
);
2714 c2
= tolower ((unsigned char) *string2
);
2716 case case_sensitive_on
:
2724 if (*string1
!= '\0')
2733 /* Characters are non-equal unless they're both '\0'; we want to
2734 make sure we get the comparison right according to our
2735 comparison in the cases where one of them is '\0' or '('. */
2737 if (*string2
== '\0')
2742 if (*string2
== '\0')
2747 if (*string2
== '\0' || *string2
== '(')
2756 if (case_pass
== case_sensitive_on
)
2759 /* Otherwise the strings were equal in case insensitive way, make
2760 a more fine grained comparison in a case sensitive way. */
2762 case_pass
= case_sensitive_on
;
2763 string1
= saved_string1
;
2764 string2
= saved_string2
;
2768 /* A simple comparison function with opposite semantics to strcmp. */
2771 streq (const char *lhs
, const char *rhs
)
2773 return !strcmp (lhs
, rhs
);
2779 ** Answer whether string_to_compare is a full or partial match to
2780 ** template_string. The partial match must be in sequence starting
2784 subset_compare (char *string_to_compare
, char *template_string
)
2788 if (template_string
!= (char *) NULL
&& string_to_compare
!= (char *) NULL
2789 && strlen (string_to_compare
) <= strlen (template_string
))
2792 (template_string
, string_to_compare
, strlen (string_to_compare
)) == 0);
2799 pagination_on_command (char *arg
, int from_tty
)
2801 pagination_enabled
= 1;
2805 pagination_off_command (char *arg
, int from_tty
)
2807 pagination_enabled
= 0;
2811 show_debug_timestamp (struct ui_file
*file
, int from_tty
,
2812 struct cmd_list_element
*c
, const char *value
)
2814 fprintf_filtered (file
, _("Timestamping debugging messages is %s.\n"),
2820 initialize_utils (void)
2822 add_setshow_uinteger_cmd ("width", class_support
, &chars_per_line
, _("\
2823 Set number of characters gdb thinks are in a line."), _("\
2824 Show number of characters gdb thinks are in a line."), NULL
,
2826 show_chars_per_line
,
2827 &setlist
, &showlist
);
2829 add_setshow_uinteger_cmd ("height", class_support
, &lines_per_page
, _("\
2830 Set number of lines gdb thinks are in a page."), _("\
2831 Show number of lines gdb thinks are in a page."), NULL
,
2833 show_lines_per_page
,
2834 &setlist
, &showlist
);
2838 add_setshow_boolean_cmd ("pagination", class_support
,
2839 &pagination_enabled
, _("\
2840 Set state of pagination."), _("\
2841 Show state of pagination."), NULL
,
2843 show_pagination_enabled
,
2844 &setlist
, &showlist
);
2848 add_com ("am", class_support
, pagination_on_command
,
2849 _("Enable pagination"));
2850 add_com ("sm", class_support
, pagination_off_command
,
2851 _("Disable pagination"));
2854 add_setshow_boolean_cmd ("sevenbit-strings", class_support
,
2855 &sevenbit_strings
, _("\
2856 Set printing of 8-bit characters in strings as \\nnn."), _("\
2857 Show printing of 8-bit characters in strings as \\nnn."), NULL
,
2859 show_sevenbit_strings
,
2860 &setprintlist
, &showprintlist
);
2862 add_setshow_boolean_cmd ("timestamp", class_maintenance
,
2863 &debug_timestamp
, _("\
2864 Set timestamping of debugging messages."), _("\
2865 Show timestamping of debugging messages."), _("\
2866 When set, debugging messages will be marked with seconds and microseconds."),
2868 show_debug_timestamp
,
2869 &setdebuglist
, &showdebuglist
);
2872 /* Machine specific function to handle SIGWINCH signal. */
2874 #ifdef SIGWINCH_HANDLER_BODY
2875 SIGWINCH_HANDLER_BODY
2877 /* Print routines to handle variable size regs, etc. */
2878 /* Temporary storage using circular buffer. */
2884 static char buf
[NUMCELLS
][CELLSIZE
];
2885 static int cell
= 0;
2887 if (++cell
>= NUMCELLS
)
2893 paddress (struct gdbarch
*gdbarch
, CORE_ADDR addr
)
2895 /* Truncate address to the size of a target address, avoiding shifts
2896 larger or equal than the width of a CORE_ADDR. The local
2897 variable ADDR_BIT stops the compiler reporting a shift overflow
2898 when it won't occur. */
2899 /* NOTE: This assumes that the significant address information is
2900 kept in the least significant bits of ADDR - the upper bits were
2901 either zero or sign extended. Should gdbarch_address_to_pointer or
2902 some ADDRESS_TO_PRINTABLE() be used to do the conversion? */
2904 int addr_bit
= gdbarch_addr_bit (gdbarch
);
2906 if (addr_bit
< (sizeof (CORE_ADDR
) * HOST_CHAR_BIT
))
2907 addr
&= ((CORE_ADDR
) 1 << addr_bit
) - 1;
2908 return hex_string (addr
);
2911 /* This function is described in "defs.h". */
2914 print_core_address (struct gdbarch
*gdbarch
, CORE_ADDR address
)
2916 int addr_bit
= gdbarch_addr_bit (gdbarch
);
2918 if (addr_bit
< (sizeof (CORE_ADDR
) * HOST_CHAR_BIT
))
2919 address
&= ((CORE_ADDR
) 1 << addr_bit
) - 1;
2921 /* FIXME: cagney/2002-05-03: Need local_address_string() function
2922 that returns the language localized string formatted to a width
2923 based on gdbarch_addr_bit. */
2925 return hex_string_custom (address
, 8);
2927 return hex_string_custom (address
, 16);
2930 /* Callback hash_f for htab_create_alloc or htab_create_alloc_ex. */
2933 core_addr_hash (const void *ap
)
2935 const CORE_ADDR
*addrp
= ap
;
2940 /* Callback eq_f for htab_create_alloc or htab_create_alloc_ex. */
2943 core_addr_eq (const void *ap
, const void *bp
)
2945 const CORE_ADDR
*addr_ap
= ap
;
2946 const CORE_ADDR
*addr_bp
= bp
;
2948 return *addr_ap
== *addr_bp
;
2952 decimal2str (char *sign
, ULONGEST addr
, int width
)
2954 /* Steal code from valprint.c:print_decimal(). Should this worry
2955 about the real size of addr as the above does? */
2956 unsigned long temp
[3];
2957 char *str
= get_cell ();
2962 temp
[i
] = addr
% (1000 * 1000 * 1000);
2963 addr
/= (1000 * 1000 * 1000);
2967 while (addr
!= 0 && i
< (sizeof (temp
) / sizeof (temp
[0])));
2976 xsnprintf (str
, CELLSIZE
, "%s%0*lu", sign
, width
, temp
[0]);
2979 xsnprintf (str
, CELLSIZE
, "%s%0*lu%09lu", sign
, width
,
2983 xsnprintf (str
, CELLSIZE
, "%s%0*lu%09lu%09lu", sign
, width
,
2984 temp
[2], temp
[1], temp
[0]);
2987 internal_error (__FILE__
, __LINE__
,
2988 _("failed internal consistency check"));
2995 octal2str (ULONGEST addr
, int width
)
2997 unsigned long temp
[3];
2998 char *str
= get_cell ();
3003 temp
[i
] = addr
% (0100000 * 0100000);
3004 addr
/= (0100000 * 0100000);
3008 while (addr
!= 0 && i
< (sizeof (temp
) / sizeof (temp
[0])));
3018 xsnprintf (str
, CELLSIZE
, "%*o", width
, 0);
3020 xsnprintf (str
, CELLSIZE
, "0%0*lo", width
, temp
[0]);
3023 xsnprintf (str
, CELLSIZE
, "0%0*lo%010lo", width
, temp
[1], temp
[0]);
3026 xsnprintf (str
, CELLSIZE
, "0%0*lo%010lo%010lo", width
,
3027 temp
[2], temp
[1], temp
[0]);
3030 internal_error (__FILE__
, __LINE__
,
3031 _("failed internal consistency check"));
3038 pulongest (ULONGEST u
)
3040 return decimal2str ("", u
, 0);
3044 plongest (LONGEST l
)
3047 return decimal2str ("-", -l
, 0);
3049 return decimal2str ("", l
, 0);
3052 /* Eliminate warning from compiler on 32-bit systems. */
3053 static int thirty_two
= 32;
3056 phex (ULONGEST l
, int sizeof_l
)
3064 xsnprintf (str
, CELLSIZE
, "%08lx%08lx",
3065 (unsigned long) (l
>> thirty_two
),
3066 (unsigned long) (l
& 0xffffffff));
3070 xsnprintf (str
, CELLSIZE
, "%08lx", (unsigned long) l
);
3074 xsnprintf (str
, CELLSIZE
, "%04x", (unsigned short) (l
& 0xffff));
3077 str
= phex (l
, sizeof (l
));
3085 phex_nz (ULONGEST l
, int sizeof_l
)
3093 unsigned long high
= (unsigned long) (l
>> thirty_two
);
3097 xsnprintf (str
, CELLSIZE
, "%lx",
3098 (unsigned long) (l
& 0xffffffff));
3100 xsnprintf (str
, CELLSIZE
, "%lx%08lx", high
,
3101 (unsigned long) (l
& 0xffffffff));
3106 xsnprintf (str
, CELLSIZE
, "%lx", (unsigned long) l
);
3110 xsnprintf (str
, CELLSIZE
, "%x", (unsigned short) (l
& 0xffff));
3113 str
= phex_nz (l
, sizeof (l
));
3120 /* Converts a LONGEST to a C-format hexadecimal literal and stores it
3121 in a static string. Returns a pointer to this string. */
3123 hex_string (LONGEST num
)
3125 char *result
= get_cell ();
3127 xsnprintf (result
, CELLSIZE
, "0x%s", phex_nz (num
, sizeof (num
)));
3131 /* Converts a LONGEST number to a C-format hexadecimal literal and
3132 stores it in a static string. Returns a pointer to this string
3133 that is valid until the next call. The number is padded on the
3134 left with 0s to at least WIDTH characters. */
3136 hex_string_custom (LONGEST num
, int width
)
3138 char *result
= get_cell ();
3139 char *result_end
= result
+ CELLSIZE
- 1;
3140 const char *hex
= phex_nz (num
, sizeof (num
));
3141 int hex_len
= strlen (hex
);
3143 if (hex_len
> width
)
3145 if (width
+ 2 >= CELLSIZE
)
3146 internal_error (__FILE__
, __LINE__
, _("\
3147 hex_string_custom: insufficient space to store result"));
3149 strcpy (result_end
- width
- 2, "0x");
3150 memset (result_end
- width
, '0', width
);
3151 strcpy (result_end
- hex_len
, hex
);
3152 return result_end
- width
- 2;
3155 /* Convert VAL to a numeral in the given radix. For
3156 * radix 10, IS_SIGNED may be true, indicating a signed quantity;
3157 * otherwise VAL is interpreted as unsigned. If WIDTH is supplied,
3158 * it is the minimum width (0-padded if needed). USE_C_FORMAT means
3159 * to use C format in all cases. If it is false, then 'x'
3160 * and 'o' formats do not include a prefix (0x or leading 0). */
3163 int_string (LONGEST val
, int radix
, int is_signed
, int width
,
3173 result
= hex_string (val
);
3175 result
= hex_string_custom (val
, width
);
3182 if (is_signed
&& val
< 0)
3183 return decimal2str ("-", -val
, width
);
3185 return decimal2str ("", val
, width
);
3189 char *result
= octal2str (val
, width
);
3191 if (use_c_format
|| val
== 0)
3197 internal_error (__FILE__
, __LINE__
,
3198 _("failed internal consistency check"));
3202 /* Convert a CORE_ADDR into a string. */
3204 core_addr_to_string (const CORE_ADDR addr
)
3206 char *str
= get_cell ();
3209 strcat (str
, phex (addr
, sizeof (addr
)));
3214 core_addr_to_string_nz (const CORE_ADDR addr
)
3216 char *str
= get_cell ();
3219 strcat (str
, phex_nz (addr
, sizeof (addr
)));
3223 /* Convert a string back into a CORE_ADDR. */
3225 string_to_core_addr (const char *my_string
)
3229 if (my_string
[0] == '0' && tolower (my_string
[1]) == 'x')
3231 /* Assume that it is in hex. */
3234 for (i
= 2; my_string
[i
] != '\0'; i
++)
3236 if (isdigit (my_string
[i
]))
3237 addr
= (my_string
[i
] - '0') + (addr
* 16);
3238 else if (isxdigit (my_string
[i
]))
3239 addr
= (tolower (my_string
[i
]) - 'a' + 0xa) + (addr
* 16);
3241 error (_("invalid hex \"%s\""), my_string
);
3246 /* Assume that it is in decimal. */
3249 for (i
= 0; my_string
[i
] != '\0'; i
++)
3251 if (isdigit (my_string
[i
]))
3252 addr
= (my_string
[i
] - '0') + (addr
* 10);
3254 error (_("invalid decimal \"%s\""), my_string
);
3262 host_address_to_string (const void *addr
)
3264 char *str
= get_cell ();
3266 xsnprintf (str
, CELLSIZE
, "0x%s", phex_nz ((uintptr_t) addr
, sizeof (addr
)));
3271 gdb_realpath (const char *filename
)
3273 /* Method 1: The system has a compile time upper bound on a filename
3274 path. Use that and realpath() to canonicalize the name. This is
3275 the most common case. Note that, if there isn't a compile time
3276 upper bound, you want to avoid realpath() at all costs. */
3277 #if defined(HAVE_REALPATH)
3279 # if defined (PATH_MAX)
3281 # define USE_REALPATH
3282 # elif defined (MAXPATHLEN)
3283 char buf
[MAXPATHLEN
];
3284 # define USE_REALPATH
3286 # if defined (USE_REALPATH)
3287 const char *rp
= realpath (filename
, buf
);
3291 return xstrdup (rp
);
3294 #endif /* HAVE_REALPATH */
3296 /* Method 2: The host system (i.e., GNU) has the function
3297 canonicalize_file_name() which malloc's a chunk of memory and
3298 returns that, use that. */
3299 #if defined(HAVE_CANONICALIZE_FILE_NAME)
3301 char *rp
= canonicalize_file_name (filename
);
3304 return xstrdup (filename
);
3310 /* FIXME: cagney/2002-11-13:
3312 Method 2a: Use realpath() with a NULL buffer. Some systems, due
3313 to the problems described in method 3, have modified their
3314 realpath() implementation so that it will allocate a buffer when
3315 NULL is passed in. Before this can be used, though, some sort of
3316 configure time test would need to be added. Otherwize the code
3317 will likely core dump. */
3319 /* Method 3: Now we're getting desperate! The system doesn't have a
3320 compile time buffer size and no alternative function. Query the
3321 OS, using pathconf(), for the buffer limit. Care is needed
3322 though, some systems do not limit PATH_MAX (return -1 for
3323 pathconf()) making it impossible to pass a correctly sized buffer
3324 to realpath() (it could always overflow). On those systems, we
3326 #if defined (HAVE_REALPATH) && defined (HAVE_UNISTD_H) && defined(HAVE_ALLOCA)
3328 /* Find out the max path size. */
3329 long path_max
= pathconf ("/", _PC_PATH_MAX
);
3333 /* PATH_MAX is bounded. */
3334 char *buf
= alloca (path_max
);
3335 char *rp
= realpath (filename
, buf
);
3337 return xstrdup (rp
? rp
: filename
);
3342 /* The MS Windows method. If we don't have realpath, we assume we
3343 don't have symlinks and just canonicalize to a Windows absolute
3344 path. GetFullPath converts ../ and ./ in relative paths to
3345 absolute paths, filling in current drive if one is not given
3346 or using the current directory of a specified drive (eg, "E:foo").
3347 It also converts all forward slashes to back slashes. */
3348 /* The file system is case-insensitive but case-preserving.
3349 So we do not lowercase the path. Otherwise, we might not
3350 be able to display the original casing in a given path. */
3351 #if defined (_WIN32)
3354 DWORD len
= GetFullPathName (filename
, MAX_PATH
, buf
, NULL
);
3356 if (len
> 0 && len
< MAX_PATH
)
3357 return xstrdup (buf
);
3361 /* This system is a lost cause, just dup the buffer. */
3362 return xstrdup (filename
);
3365 /* Return a copy of FILENAME, with its directory prefix canonicalized
3369 xfullpath (const char *filename
)
3371 const char *base_name
= lbasename (filename
);
3376 /* Extract the basename of filename, and return immediately
3377 a copy of filename if it does not contain any directory prefix. */
3378 if (base_name
== filename
)
3379 return xstrdup (filename
);
3381 dir_name
= alloca ((size_t) (base_name
- filename
+ 2));
3382 /* Allocate enough space to store the dir_name + plus one extra
3383 character sometimes needed under Windows (see below), and
3384 then the closing \000 character. */
3385 strncpy (dir_name
, filename
, base_name
- filename
);
3386 dir_name
[base_name
- filename
] = '\000';
3388 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
3389 /* We need to be careful when filename is of the form 'd:foo', which
3390 is equivalent of d:./foo, which is totally different from d:/foo. */
3391 if (strlen (dir_name
) == 2 && isalpha (dir_name
[0]) && dir_name
[1] == ':')
3394 dir_name
[3] = '\000';
3398 /* Canonicalize the directory prefix, and build the resulting
3399 filename. If the dirname realpath already contains an ending
3400 directory separator, avoid doubling it. */
3401 real_path
= gdb_realpath (dir_name
);
3402 if (IS_DIR_SEPARATOR (real_path
[strlen (real_path
) - 1]))
3403 result
= concat (real_path
, base_name
, (char *) NULL
);
3405 result
= concat (real_path
, SLASH_STRING
, base_name
, (char *) NULL
);
3412 /* This is the 32-bit CRC function used by the GNU separate debug
3413 facility. An executable may contain a section named
3414 .gnu_debuglink, which holds the name of a separate executable file
3415 containing its debug info, and a checksum of that file's contents,
3416 computed using this function. */
3418 gnu_debuglink_crc32 (unsigned long crc
, unsigned char *buf
, size_t len
)
3420 static const unsigned int crc32_table
[256] = {
3421 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419,
3422 0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4,
3423 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07,
3424 0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,
3425 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856,
3426 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
3427 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4,
3428 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
3429 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3,
3430 0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a,
3431 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599,
3432 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
3433 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190,
3434 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f,
3435 0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e,
3436 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
3437 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed,
3438 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
3439 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3,
3440 0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2,
3441 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a,
3442 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5,
3443 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010,
3444 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
3445 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17,
3446 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6,
3447 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615,
3448 0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,
3449 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344,
3450 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
3451 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a,
3452 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
3453 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1,
3454 0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c,
3455 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef,
3456 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
3457 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe,
3458 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31,
3459 0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c,
3460 0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
3461 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b,
3462 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
3463 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1,
3464 0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,
3465 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278,
3466 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7,
3467 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66,
3468 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
3469 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605,
3470 0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8,
3471 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b,
3476 crc
= ~crc
& 0xffffffff;
3477 for (end
= buf
+ len
; buf
< end
; ++buf
)
3478 crc
= crc32_table
[(crc
^ *buf
) & 0xff] ^ (crc
>> 8);
3479 return ~crc
& 0xffffffff;
3483 align_up (ULONGEST v
, int n
)
3485 /* Check that N is really a power of two. */
3486 gdb_assert (n
&& (n
& (n
-1)) == 0);
3487 return (v
+ n
- 1) & -n
;
3491 align_down (ULONGEST v
, int n
)
3493 /* Check that N is really a power of two. */
3494 gdb_assert (n
&& (n
& (n
-1)) == 0);
3498 /* Allocation function for the libiberty hash table which uses an
3499 obstack. The obstack is passed as DATA. */
3502 hashtab_obstack_allocate (void *data
, size_t size
, size_t count
)
3504 unsigned int total
= size
* count
;
3505 void *ptr
= obstack_alloc ((struct obstack
*) data
, total
);
3507 memset (ptr
, 0, total
);
3511 /* Trivial deallocation function for the libiberty splay tree and hash
3512 table - don't deallocate anything. Rely on later deletion of the
3513 obstack. DATA will be the obstack, although it is not needed
3517 dummy_obstack_deallocate (void *object
, void *data
)
3522 /* The bit offset of the highest byte in a ULONGEST, for overflow
3525 #define HIGH_BYTE_POSN ((sizeof (ULONGEST) - 1) * HOST_CHAR_BIT)
3527 /* True (non-zero) iff DIGIT is a valid digit in radix BASE,
3528 where 2 <= BASE <= 36. */
3531 is_digit_in_base (unsigned char digit
, int base
)
3533 if (!isalnum (digit
))
3536 return (isdigit (digit
) && digit
< base
+ '0');
3538 return (isdigit (digit
) || tolower (digit
) < base
- 10 + 'a');
3542 digit_to_int (unsigned char c
)
3547 return tolower (c
) - 'a' + 10;
3550 /* As for strtoul, but for ULONGEST results. */
3553 strtoulst (const char *num
, const char **trailer
, int base
)
3555 unsigned int high_part
;
3560 /* Skip leading whitespace. */
3561 while (isspace (num
[i
]))
3564 /* Handle prefixes. */
3567 else if (num
[i
] == '-')
3573 if (base
== 0 || base
== 16)
3575 if (num
[i
] == '0' && (num
[i
+ 1] == 'x' || num
[i
+ 1] == 'X'))
3583 if (base
== 0 && num
[i
] == '0')
3589 if (base
< 2 || base
> 36)
3595 result
= high_part
= 0;
3596 for (; is_digit_in_base (num
[i
], base
); i
+= 1)
3598 result
= result
* base
+ digit_to_int (num
[i
]);
3599 high_part
= high_part
* base
+ (unsigned int) (result
>> HIGH_BYTE_POSN
);
3600 result
&= ((ULONGEST
) 1 << HIGH_BYTE_POSN
) - 1;
3601 if (high_part
> 0xff)
3604 result
= ~ (ULONGEST
) 0;
3611 if (trailer
!= NULL
)
3614 result
= result
+ ((ULONGEST
) high_part
<< HIGH_BYTE_POSN
);
3621 /* Simple, portable version of dirname that does not modify its
3625 ldirname (const char *filename
)
3627 const char *base
= lbasename (filename
);
3630 while (base
> filename
&& IS_DIR_SEPARATOR (base
[-1]))
3633 if (base
== filename
)
3636 dirname
= xmalloc (base
- filename
+ 2);
3637 memcpy (dirname
, filename
, base
- filename
);
3639 /* On DOS based file systems, convert "d:foo" to "d:.", so that we
3640 create "d:./bar" later instead of the (different) "d:/bar". */
3641 if (base
- filename
== 2 && IS_ABSOLUTE_PATH (base
)
3642 && !IS_DIR_SEPARATOR (filename
[0]))
3643 dirname
[base
++ - filename
] = '.';
3645 dirname
[base
- filename
] = '\0';
3649 /* Call libiberty's buildargv, and return the result.
3650 If buildargv fails due to out-of-memory, call nomem.
3651 Therefore, the returned value is guaranteed to be non-NULL,
3652 unless the parameter itself is NULL. */
3655 gdb_buildargv (const char *s
)
3657 char **argv
= buildargv (s
);
3659 if (s
!= NULL
&& argv
== NULL
)
3665 compare_positive_ints (const void *ap
, const void *bp
)
3667 /* Because we know we're comparing two ints which are positive,
3668 there's no danger of overflow here. */
3669 return * (int *) ap
- * (int *) bp
;
3672 /* String compare function for qsort. */
3675 compare_strings (const void *arg1
, const void *arg2
)
3677 const char **s1
= (const char **) arg1
;
3678 const char **s2
= (const char **) arg2
;
3680 return strcmp (*s1
, *s2
);
3683 #define AMBIGUOUS_MESS1 ".\nMatching formats:"
3684 #define AMBIGUOUS_MESS2 \
3685 ".\nUse \"set gnutarget format-name\" to specify the format."
3688 gdb_bfd_errmsg (bfd_error_type error_tag
, char **matching
)
3694 /* Check if errmsg just need simple return. */
3695 if (error_tag
!= bfd_error_file_ambiguously_recognized
|| matching
== NULL
)
3696 return bfd_errmsg (error_tag
);
3698 ret_len
= strlen (bfd_errmsg (error_tag
)) + strlen (AMBIGUOUS_MESS1
)
3699 + strlen (AMBIGUOUS_MESS2
);
3700 for (p
= matching
; *p
; p
++)
3701 ret_len
+= strlen (*p
) + 1;
3702 ret
= xmalloc (ret_len
+ 1);
3704 make_cleanup (xfree
, ret
);
3706 strcpy (retp
, bfd_errmsg (error_tag
));
3707 retp
+= strlen (retp
);
3709 strcpy (retp
, AMBIGUOUS_MESS1
);
3710 retp
+= strlen (retp
);
3712 for (p
= matching
; *p
; p
++)
3714 sprintf (retp
, " %s", *p
);
3715 retp
+= strlen (retp
);
3719 strcpy (retp
, AMBIGUOUS_MESS2
);
3724 /* Return ARGS parsed as a valid pid, or throw an error. */
3727 parse_pid_to_attach (char *args
)
3733 error_no_arg (_("process-id to attach"));
3736 pid
= strtoul (args
, &dummy
, 0);
3737 /* Some targets don't set errno on errors, grrr! */
3738 if ((pid
== 0 && dummy
== args
) || dummy
!= &args
[strlen (args
)])
3739 error (_("Illegal process-id: %s."), args
);
3744 /* Helper for make_bpstat_clear_actions_cleanup. */
3747 do_bpstat_clear_actions_cleanup (void *unused
)
3749 bpstat_clear_actions ();
3752 /* Call bpstat_clear_actions for the case an exception is throw. You should
3753 discard_cleanups if no exception is caught. */
3756 make_bpstat_clear_actions_cleanup (void)
3758 return make_cleanup (do_bpstat_clear_actions_cleanup
, NULL
);
3761 /* Check for GCC >= 4.x according to the symtab->producer string. Return minor
3762 version (x) of 4.x in such case. If it is not GCC or it is GCC older than
3763 4.x return -1. If it is GCC 5.x or higher return INT_MAX. */
3766 producer_is_gcc_ge_4 (const char *producer
)
3771 if (producer
== NULL
)
3773 /* For unknown compilers expect their behavior is not compliant. For GCC
3774 this case can also happen for -gdwarf-4 type units supported since
3780 /* Skip any identifier after "GNU " - such as "C++" or "Java". */
3782 if (strncmp (producer
, "GNU ", strlen ("GNU ")) != 0)
3784 /* For non-GCC compilers expect their behavior is not compliant. */
3788 cs
= &producer
[strlen ("GNU ")];
3789 while (*cs
&& !isdigit (*cs
))
3791 if (sscanf (cs
, "%d.%d", &major
, &minor
) != 2)
3793 /* Not recognized as GCC. */
3809 /* SIGALRM handler for waitpid_with_timeout. */
3812 sigalrm_handler (int signo
)
3814 /* Nothing to do. */
3819 /* Wrapper to wait for child PID to die with TIMEOUT.
3820 TIMEOUT is the time to stop waiting in seconds.
3821 If TIMEOUT is zero, pass WNOHANG to waitpid.
3822 Returns PID if it was successfully waited for, otherwise -1.
3824 Timeouts are currently implemented with alarm and SIGALRM.
3825 If the host does not support them, this waits "forever".
3826 It would be odd though for a host to have waitpid and not SIGALRM. */
3829 wait_to_die_with_timeout (pid_t pid
, int *status
, int timeout
)
3831 pid_t waitpid_result
;
3833 gdb_assert (pid
> 0);
3834 gdb_assert (timeout
>= 0);
3839 #if defined (HAVE_SIGACTION) && defined (SA_RESTART)
3840 struct sigaction sa
, old_sa
;
3842 sa
.sa_handler
= sigalrm_handler
;
3843 sigemptyset (&sa
.sa_mask
);
3845 sigaction (SIGALRM
, &sa
, &old_sa
);
3849 ofunc
= (void (*)()) signal (SIGALRM
, sigalrm_handler
);
3855 waitpid_result
= waitpid (pid
, status
, 0);
3859 #if defined (HAVE_SIGACTION) && defined (SA_RESTART)
3860 sigaction (SIGALRM
, &old_sa
, NULL
);
3862 signal (SIGALRM
, ofunc
);
3867 waitpid_result
= waitpid (pid
, status
, WNOHANG
);
3869 if (waitpid_result
== pid
)
3875 #endif /* HAVE_WAITPID */
3877 /* Provide a prototype to silence -Wmissing-prototypes. */
3878 extern initialize_file_ftype _initialize_utils
;
3881 _initialize_utils (void)
3883 add_internal_problem_command (&internal_error_problem
);
3884 add_internal_problem_command (&internal_warning_problem
);