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"
30 #ifdef HAVE_SYS_RESOURCE_H
31 #include <sys/resource.h>
32 #endif /* HAVE_SYS_RESOURCE_H */
35 #include "tui/tui.h" /* For tui_get_command_dimension. */
42 /* SunOS's curses.h has a '#define reg register' in it. Thank you Sun. */
48 #include "timeval-utils.h"
53 #include "gdb-demangle.h"
54 #include "expression.h"
58 #include "filenames.h"
60 #include "gdb_obstack.h"
66 #include "inferior.h" /* for signed_pointer_to_address */
68 #include <sys/param.h> /* For MAXPATHLEN */
70 #include "gdb_curses.h"
72 #include "readline/readline.h"
77 #include "gdb_usleep.h"
79 #include "gdb_regex.h"
82 extern PTR
malloc (); /* ARI: PTR */
84 #if !HAVE_DECL_REALLOC
85 extern PTR
realloc (); /* ARI: PTR */
91 /* readline defines this. */
94 void (*deprecated_error_begin_hook
) (void);
96 /* Prototypes for local functions */
98 static void vfprintf_maybe_filtered (struct ui_file
*, const char *,
99 va_list, int) ATTRIBUTE_PRINTF (2, 0);
101 static void fputs_maybe_filtered (const char *, struct ui_file
*, int);
103 static void prompt_for_continue (void);
105 static void set_screen_size (void);
106 static void set_width (void);
108 /* A flag indicating whether to timestamp debugging messages. */
110 static int debug_timestamp
= 0;
112 /* Nonzero if we have job control. */
116 /* Nonzero means a quit has been requested. */
120 /* Nonzero means quit immediately if Control-C is typed now, rather
121 than waiting until QUIT is executed. Be careful in setting this;
122 code which executes with immediate_quit set has to be very careful
123 about being able to deal with being interrupted at any time. It is
124 almost always better to use QUIT; the only exception I can think of
125 is being able to quit out of a system call (using EINTR loses if
126 the SIGINT happens between the previous QUIT and the system call).
127 To immediately quit in the case in which a SIGINT happens between
128 the previous QUIT and setting immediate_quit (desirable anytime we
129 expect to block), call QUIT after setting immediate_quit. */
133 /* Nonzero means that strings with character values >0x7F should be printed
134 as octal escapes. Zero means just print the value (e.g. it's an
135 international character, and the terminal or window can cope.) */
137 int sevenbit_strings
= 0;
139 show_sevenbit_strings (struct ui_file
*file
, int from_tty
,
140 struct cmd_list_element
*c
, const char *value
)
142 fprintf_filtered (file
, _("Printing of 8-bit characters "
143 "in strings as \\nnn is %s.\n"),
147 /* String to be printed before error messages, if any. */
149 char *error_pre_print
;
151 /* String to be printed before quit messages, if any. */
153 char *quit_pre_print
;
155 /* String to be printed before warning messages, if any. */
157 char *warning_pre_print
= "\nwarning: ";
159 int pagination_enabled
= 1;
161 show_pagination_enabled (struct ui_file
*file
, int from_tty
,
162 struct cmd_list_element
*c
, const char *value
)
164 fprintf_filtered (file
, _("State of pagination is %s.\n"), value
);
168 /* Cleanup utilities.
170 These are not defined in cleanups.c (nor declared in cleanups.h)
171 because while they use the "cleanup API" they are not part of the
175 do_freeargv (void *arg
)
177 freeargv ((char **) arg
);
181 make_cleanup_freeargv (char **arg
)
183 return make_cleanup (do_freeargv
, arg
);
187 do_dyn_string_delete (void *arg
)
189 dyn_string_delete ((dyn_string_t
) arg
);
193 make_cleanup_dyn_string_delete (dyn_string_t arg
)
195 return make_cleanup (do_dyn_string_delete
, arg
);
199 do_bfd_close_cleanup (void *arg
)
205 make_cleanup_bfd_close (bfd
*abfd
)
207 return make_cleanup (do_bfd_close_cleanup
, abfd
);
211 do_close_cleanup (void *arg
)
219 make_cleanup_close (int fd
)
221 int *saved_fd
= xmalloc (sizeof (fd
));
224 return make_cleanup_dtor (do_close_cleanup
, saved_fd
, xfree
);
227 /* Helper function which does the work for make_cleanup_fclose. */
230 do_fclose_cleanup (void *arg
)
237 /* Return a new cleanup that closes FILE. */
240 make_cleanup_fclose (FILE *file
)
242 return make_cleanup (do_fclose_cleanup
, file
);
245 /* Helper function which does the work for make_cleanup_obstack_free. */
248 do_obstack_free (void *arg
)
250 struct obstack
*ob
= arg
;
252 obstack_free (ob
, NULL
);
255 /* Return a new cleanup that frees OBSTACK. */
258 make_cleanup_obstack_free (struct obstack
*obstack
)
260 return make_cleanup (do_obstack_free
, obstack
);
264 do_ui_file_delete (void *arg
)
266 ui_file_delete (arg
);
270 make_cleanup_ui_file_delete (struct ui_file
*arg
)
272 return make_cleanup (do_ui_file_delete
, arg
);
275 /* Helper function for make_cleanup_ui_out_redirect_pop. */
278 do_ui_out_redirect_pop (void *arg
)
280 struct ui_out
*uiout
= arg
;
282 if (ui_out_redirect (uiout
, NULL
) < 0)
283 warning (_("Cannot restore redirection of the current output protocol"));
286 /* Return a new cleanup that pops the last redirection by ui_out_redirect
287 with NULL parameter. */
290 make_cleanup_ui_out_redirect_pop (struct ui_out
*uiout
)
292 return make_cleanup (do_ui_out_redirect_pop
, uiout
);
296 do_free_section_addr_info (void *arg
)
298 free_section_addr_info (arg
);
302 make_cleanup_free_section_addr_info (struct section_addr_info
*addrs
)
304 return make_cleanup (do_free_section_addr_info
, addrs
);
307 struct restore_integer_closure
314 restore_integer (void *p
)
316 struct restore_integer_closure
*closure
= p
;
318 *(closure
->variable
) = closure
->value
;
321 /* Remember the current value of *VARIABLE and make it restored when
322 the cleanup is run. */
325 make_cleanup_restore_integer (int *variable
)
327 struct restore_integer_closure
*c
=
328 xmalloc (sizeof (struct restore_integer_closure
));
330 c
->variable
= variable
;
331 c
->value
= *variable
;
333 return make_cleanup_dtor (restore_integer
, (void *) c
, xfree
);
336 /* Remember the current value of *VARIABLE and make it restored when
337 the cleanup is run. */
340 make_cleanup_restore_uinteger (unsigned int *variable
)
342 return make_cleanup_restore_integer ((int *) variable
);
345 /* Helper for make_cleanup_unpush_target. */
348 do_unpush_target (void *arg
)
350 struct target_ops
*ops
= arg
;
355 /* Return a new cleanup that unpushes OPS. */
358 make_cleanup_unpush_target (struct target_ops
*ops
)
360 return make_cleanup (do_unpush_target
, ops
);
363 /* Helper for make_cleanup_htab_delete compile time checking the types. */
366 do_htab_delete_cleanup (void *htab_voidp
)
368 htab_t htab
= htab_voidp
;
373 /* Return a new cleanup that deletes HTAB. */
376 make_cleanup_htab_delete (htab_t htab
)
378 return make_cleanup (do_htab_delete_cleanup
, htab
);
381 struct restore_ui_file_closure
383 struct ui_file
**variable
;
384 struct ui_file
*value
;
388 do_restore_ui_file (void *p
)
390 struct restore_ui_file_closure
*closure
= p
;
392 *(closure
->variable
) = closure
->value
;
395 /* Remember the current value of *VARIABLE and make it restored when
396 the cleanup is run. */
399 make_cleanup_restore_ui_file (struct ui_file
**variable
)
401 struct restore_ui_file_closure
*c
= XNEW (struct restore_ui_file_closure
);
403 c
->variable
= variable
;
404 c
->value
= *variable
;
406 return make_cleanup_dtor (do_restore_ui_file
, (void *) c
, xfree
);
409 /* Helper for make_cleanup_value_free_to_mark. */
412 do_value_free_to_mark (void *value
)
414 value_free_to_mark ((struct value
*) value
);
417 /* Free all values allocated since MARK was obtained by value_mark
418 (except for those released) when the cleanup is run. */
421 make_cleanup_value_free_to_mark (struct value
*mark
)
423 return make_cleanup (do_value_free_to_mark
, mark
);
426 /* Helper for make_cleanup_value_free. */
429 do_value_free (void *value
)
437 make_cleanup_value_free (struct value
*value
)
439 return make_cleanup (do_value_free
, value
);
442 /* Helper for make_cleanup_free_so. */
445 do_free_so (void *arg
)
447 struct so_list
*so
= arg
;
452 /* Make cleanup handler calling free_so for SO. */
455 make_cleanup_free_so (struct so_list
*so
)
457 return make_cleanup (do_free_so
, so
);
460 /* This function is useful for cleanups.
464 old_chain = make_cleanup (free_current_contents, &foo);
466 to arrange to free the object thus allocated. */
469 free_current_contents (void *ptr
)
471 void **location
= ptr
;
473 if (location
== NULL
)
474 internal_error (__FILE__
, __LINE__
,
475 _("free_current_contents: NULL pointer"));
476 if (*location
!= NULL
)
483 /* If nonzero, display time usage both at startup and for each command. */
485 static int display_time
;
487 /* If nonzero, display space usage both at startup and for each command. */
489 static int display_space
;
491 /* Records a run time and space usage to be used as a base for
492 reporting elapsed time or change in space. In addition,
493 the msg_type field indicates whether the saved time is from the
494 beginning of GDB execution (0) or the beginning of an individual
495 command execution (1). */
500 struct timeval start_wall_time
;
504 /* Set whether to display time statistics to NEW_VALUE (non-zero
507 set_display_time (int new_value
)
509 display_time
= new_value
;
512 /* Set whether to display space statistics to NEW_VALUE (non-zero
515 set_display_space (int new_value
)
517 display_space
= new_value
;
520 /* As indicated by display_time and display_space, report GDB's elapsed time
521 and space usage from the base time and space provided in ARG, which
522 must be a pointer to a struct cmd_stat. This function is intended
523 to be called as a cleanup. */
525 report_command_stats (void *arg
)
527 struct cmd_stats
*start_stats
= (struct cmd_stats
*) arg
;
528 int msg_type
= start_stats
->msg_type
;
532 long cmd_time
= get_run_time () - start_stats
->start_cpu_time
;
533 struct timeval now_wall_time
, delta_wall_time
;
535 gettimeofday (&now_wall_time
, NULL
);
536 timeval_sub (&delta_wall_time
,
537 &now_wall_time
, &start_stats
->start_wall_time
);
539 printf_unfiltered (msg_type
== 0
540 ? _("Startup time: %ld.%06ld (cpu), %ld.%06ld (wall)\n")
541 : _("Command execution time: %ld.%06ld (cpu), %ld.%06ld (wall)\n"),
542 cmd_time
/ 1000000, cmd_time
% 1000000,
543 (long) delta_wall_time
.tv_sec
,
544 (long) delta_wall_time
.tv_usec
);
550 char *lim
= (char *) sbrk (0);
552 long space_now
= lim
- lim_at_start
;
553 long space_diff
= space_now
- start_stats
->start_space
;
555 printf_unfiltered (msg_type
== 0
556 ? _("Space used: %ld (%s%ld during startup)\n")
557 : _("Space used: %ld (%s%ld for this command)\n"),
559 (space_diff
>= 0 ? "+" : ""),
565 /* Create a cleanup that reports time and space used since its
566 creation. Precise messages depend on MSG_TYPE:
567 0: Initial time/space
568 1: Individual command time/space. */
570 make_command_stats_cleanup (int msg_type
)
572 struct cmd_stats
*new_stat
= XMALLOC (struct cmd_stats
);
575 char *lim
= (char *) sbrk (0);
576 new_stat
->start_space
= lim
- lim_at_start
;
579 new_stat
->msg_type
= msg_type
;
580 new_stat
->start_cpu_time
= get_run_time ();
581 gettimeofday (&new_stat
->start_wall_time
, NULL
);
583 return make_cleanup_dtor (report_command_stats
, new_stat
, xfree
);
588 /* Print a warning message. The first argument STRING is the warning
589 message, used as an fprintf format string, the second is the
590 va_list of arguments for that string. A warning is unfiltered (not
591 paginated) so that the user does not need to page through each
592 screen full of warnings when there are lots of them. */
595 vwarning (const char *string
, va_list args
)
597 if (deprecated_warning_hook
)
598 (*deprecated_warning_hook
) (string
, args
);
601 target_terminal_ours ();
602 wrap_here (""); /* Force out any buffered output. */
603 gdb_flush (gdb_stdout
);
604 if (warning_pre_print
)
605 fputs_unfiltered (warning_pre_print
, gdb_stderr
);
606 vfprintf_unfiltered (gdb_stderr
, string
, args
);
607 fprintf_unfiltered (gdb_stderr
, "\n");
612 /* Print a warning message.
613 The first argument STRING is the warning message, used as a fprintf string,
614 and the remaining args are passed as arguments to it.
615 The primary difference between warnings and errors is that a warning
616 does not force the return to command level. */
619 warning (const char *string
, ...)
623 va_start (args
, string
);
624 vwarning (string
, args
);
628 /* Print an error message and return to command level.
629 The first argument STRING is the error message, used as a fprintf string,
630 and the remaining args are passed as arguments to it. */
633 verror (const char *string
, va_list args
)
635 throw_verror (GENERIC_ERROR
, string
, args
);
639 error (const char *string
, ...)
643 va_start (args
, string
);
644 throw_verror (GENERIC_ERROR
, string
, args
);
648 /* Print an error message and quit.
649 The first argument STRING is the error message, used as a fprintf string,
650 and the remaining args are passed as arguments to it. */
653 vfatal (const char *string
, va_list args
)
655 throw_vfatal (string
, args
);
659 fatal (const char *string
, ...)
663 va_start (args
, string
);
664 throw_vfatal (string
, args
);
669 error_stream (struct ui_file
*stream
)
671 char *message
= ui_file_xstrdup (stream
, NULL
);
673 make_cleanup (xfree
, message
);
674 error (("%s"), message
);
677 /* Dump core trying to increase the core soft limit to hard limit first. */
682 #ifdef HAVE_SETRLIMIT
683 struct rlimit rlim
= { RLIM_INFINITY
, RLIM_INFINITY
};
685 setrlimit (RLIMIT_CORE
, &rlim
);
686 #endif /* HAVE_SETRLIMIT */
688 abort (); /* NOTE: GDB has only three calls to abort(). */
691 /* Check whether GDB will be able to dump core using the dump_core
695 can_dump_core (const char *reason
)
697 #ifdef HAVE_GETRLIMIT
700 /* Be quiet and assume we can dump if an error is returned. */
701 if (getrlimit (RLIMIT_CORE
, &rlim
) != 0)
704 if (rlim
.rlim_max
== 0)
706 fprintf_unfiltered (gdb_stderr
,
707 _("%s\nUnable to dump core, use `ulimit -c"
708 " unlimited' before executing GDB next time.\n"),
712 #endif /* HAVE_GETRLIMIT */
717 /* Allow the user to configure the debugger behavior with respect to
718 what to do when an internal problem is detected. */
720 const char internal_problem_ask
[] = "ask";
721 const char internal_problem_yes
[] = "yes";
722 const char internal_problem_no
[] = "no";
723 static const char *const internal_problem_modes
[] =
725 internal_problem_ask
,
726 internal_problem_yes
,
731 /* Print a message reporting an internal error/warning. Ask the user
732 if they want to continue, dump core, or just exit. Return
733 something to indicate a quit. */
735 struct internal_problem
738 const char *should_quit
;
739 const char *should_dump_core
;
742 /* Report a problem, internal to GDB, to the user. Once the problem
743 has been reported, and assuming GDB didn't quit, the caller can
744 either allow execution to resume or throw an error. */
746 static void ATTRIBUTE_PRINTF (4, 0)
747 internal_vproblem (struct internal_problem
*problem
,
748 const char *file
, int line
, const char *fmt
, va_list ap
)
755 /* Don't allow infinite error/warning recursion. */
757 static char msg
[] = "Recursive internal problem.\n";
766 fputs_unfiltered (msg
, gdb_stderr
);
767 abort (); /* NOTE: GDB has only three calls to abort(). */
770 /* Newer GLIBC versions put the warn_unused_result attribute
771 on write, but this is one of those rare cases where
772 ignoring the return value is correct. Casting to (void)
773 does not fix this problem. This is the solution suggested
774 at http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25509. */
775 if (write (STDERR_FILENO
, msg
, sizeof (msg
)) != sizeof (msg
))
776 abort (); /* NOTE: GDB has only three calls to abort(). */
781 /* Try to get the message out and at the start of a new line. */
782 target_terminal_ours ();
785 /* Create a string containing the full error/warning message. Need
786 to call query with this full string, as otherwize the reason
787 (error/warning) and question become separated. Format using a
788 style similar to a compiler error message. Include extra detail
789 so that the user knows that they are living on the edge. */
793 msg
= xstrvprintf (fmt
, ap
);
794 reason
= xstrprintf ("%s:%d: %s: %s\n"
795 "A problem internal to GDB has been detected,\n"
796 "further debugging may prove unreliable.",
797 file
, line
, problem
->name
, msg
);
799 make_cleanup (xfree
, reason
);
802 if (problem
->should_quit
== internal_problem_ask
)
804 /* Default (yes/batch case) is to quit GDB. When in batch mode
805 this lessens the likelihood of GDB going into an infinite
809 /* Emit the message and quit. */
810 fputs_unfiltered (reason
, gdb_stderr
);
811 fputs_unfiltered ("\n", gdb_stderr
);
815 quit_p
= query (_("%s\nQuit this debugging session? "), reason
);
817 else if (problem
->should_quit
== internal_problem_yes
)
819 else if (problem
->should_quit
== internal_problem_no
)
822 internal_error (__FILE__
, __LINE__
, _("bad switch"));
824 if (problem
->should_dump_core
== internal_problem_ask
)
826 if (!can_dump_core (reason
))
830 /* Default (yes/batch case) is to dump core. This leaves a GDB
831 `dropping' so that it is easier to see that something went
833 dump_core_p
= query (_("%s\nCreate a core file of GDB? "), reason
);
836 else if (problem
->should_dump_core
== internal_problem_yes
)
837 dump_core_p
= can_dump_core (reason
);
838 else if (problem
->should_dump_core
== internal_problem_no
)
841 internal_error (__FILE__
, __LINE__
, _("bad switch"));
854 #ifdef HAVE_WORKING_FORK
864 static struct internal_problem internal_error_problem
= {
865 "internal-error", internal_problem_ask
, internal_problem_ask
869 internal_verror (const char *file
, int line
, const char *fmt
, va_list ap
)
871 internal_vproblem (&internal_error_problem
, file
, line
, fmt
, ap
);
872 deprecated_throw_reason (RETURN_ERROR
);
876 internal_error (const char *file
, int line
, const char *string
, ...)
880 va_start (ap
, string
);
881 internal_verror (file
, line
, string
, ap
);
885 static struct internal_problem internal_warning_problem
= {
886 "internal-warning", internal_problem_ask
, internal_problem_ask
890 internal_vwarning (const char *file
, int line
, const char *fmt
, va_list ap
)
892 internal_vproblem (&internal_warning_problem
, file
, line
, fmt
, ap
);
896 internal_warning (const char *file
, int line
, const char *string
, ...)
900 va_start (ap
, string
);
901 internal_vwarning (file
, line
, string
, ap
);
905 /* Dummy functions to keep add_prefix_cmd happy. */
908 set_internal_problem_cmd (char *args
, int from_tty
)
913 show_internal_problem_cmd (char *args
, int from_tty
)
917 /* When GDB reports an internal problem (error or warning) it gives
918 the user the opportunity to quit GDB and/or create a core file of
919 the current debug session. This function registers a few commands
920 that make it possible to specify that GDB should always or never
921 quit or create a core file, without asking. The commands look
924 maint set PROBLEM-NAME quit ask|yes|no
925 maint show PROBLEM-NAME quit
926 maint set PROBLEM-NAME corefile ask|yes|no
927 maint show PROBLEM-NAME corefile
929 Where PROBLEM-NAME is currently "internal-error" or
930 "internal-warning". */
933 add_internal_problem_command (struct internal_problem
*problem
)
935 struct cmd_list_element
**set_cmd_list
;
936 struct cmd_list_element
**show_cmd_list
;
940 set_cmd_list
= xmalloc (sizeof (*set_cmd_list
));
941 show_cmd_list
= xmalloc (sizeof (*set_cmd_list
));
942 *set_cmd_list
= NULL
;
943 *show_cmd_list
= NULL
;
945 set_doc
= xstrprintf (_("Configure what GDB does when %s is detected."),
948 show_doc
= xstrprintf (_("Show what GDB does when %s is detected."),
951 add_prefix_cmd ((char*) problem
->name
,
952 class_maintenance
, set_internal_problem_cmd
, set_doc
,
954 concat ("maintenance set ", problem
->name
, " ",
956 0/*allow-unknown*/, &maintenance_set_cmdlist
);
958 add_prefix_cmd ((char*) problem
->name
,
959 class_maintenance
, show_internal_problem_cmd
, show_doc
,
961 concat ("maintenance show ", problem
->name
, " ",
963 0/*allow-unknown*/, &maintenance_show_cmdlist
);
965 set_doc
= xstrprintf (_("Set whether GDB should quit "
966 "when an %s is detected"),
968 show_doc
= xstrprintf (_("Show whether GDB will quit "
969 "when an %s is detected"),
971 add_setshow_enum_cmd ("quit", class_maintenance
,
972 internal_problem_modes
,
973 &problem
->should_quit
,
985 set_doc
= xstrprintf (_("Set whether GDB should create a core "
986 "file of GDB when %s is detected"),
988 show_doc
= xstrprintf (_("Show whether GDB will create a core "
989 "file of GDB when %s is detected"),
991 add_setshow_enum_cmd ("corefile", class_maintenance
,
992 internal_problem_modes
,
993 &problem
->should_dump_core
,
1006 /* Print the system error message for errno, and also mention STRING
1007 as the file name for which the error was encountered.
1008 Then return to command level. */
1011 perror_with_name (const char *string
)
1016 err
= safe_strerror (errno
);
1017 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
1018 strcpy (combined
, string
);
1019 strcat (combined
, ": ");
1020 strcat (combined
, err
);
1022 /* I understand setting these is a matter of taste. Still, some people
1023 may clear errno but not know about bfd_error. Doing this here is not
1025 bfd_set_error (bfd_error_no_error
);
1028 error (_("%s."), combined
);
1031 /* Print the system error message for ERRCODE, and also mention STRING
1032 as the file name for which the error was encountered. */
1035 print_sys_errmsg (const char *string
, int errcode
)
1040 err
= safe_strerror (errcode
);
1041 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
1042 strcpy (combined
, string
);
1043 strcat (combined
, ": ");
1044 strcat (combined
, err
);
1046 /* We want anything which was printed on stdout to come out first, before
1048 gdb_flush (gdb_stdout
);
1049 fprintf_unfiltered (gdb_stderr
, "%s.\n", combined
);
1052 /* Control C eventually causes this to be called, at a convenient time. */
1058 /* No steenking SIGINT will ever be coming our way when the
1059 program is resumed. Don't lie. */
1063 /* If there is no terminal switching for this target, then we can't
1064 possibly get screwed by the lack of job control. */
1065 || current_target
.to_terminal_ours
== NULL
)
1068 fatal ("Quit (expect signal SIGINT when the program is resumed)");
1073 /* Called when a memory allocation fails, with the number of bytes of
1074 memory requested in SIZE. */
1077 malloc_failure (long size
)
1081 internal_error (__FILE__
, __LINE__
,
1082 _("virtual memory exhausted: can't allocate %ld bytes."),
1087 internal_error (__FILE__
, __LINE__
, _("virtual memory exhausted."));
1091 /* My replacement for the read system call.
1092 Used like `read' but keeps going if `read' returns too soon. */
1095 myread (int desc
, char *addr
, int len
)
1102 val
= read (desc
, addr
, len
);
1106 return orglen
- len
;
1113 /* Make a copy of the string at PTR with SIZE characters
1114 (and add a null character at the end in the copy).
1115 Uses malloc to get the space. Returns the address of the copy. */
1118 savestring (const char *ptr
, size_t size
)
1120 char *p
= (char *) xmalloc (size
+ 1);
1122 memcpy (p
, ptr
, size
);
1128 print_spaces (int n
, struct ui_file
*file
)
1130 fputs_unfiltered (n_spaces (n
), file
);
1133 /* Print a host address. */
1136 gdb_print_host_address (const void *addr
, struct ui_file
*stream
)
1138 fprintf_filtered (stream
, "%s", host_address_to_string (addr
));
1142 /* A cleanup function that calls regfree. */
1145 do_regfree_cleanup (void *r
)
1150 /* Create a new cleanup that frees the compiled regular expression R. */
1153 make_regfree_cleanup (regex_t
*r
)
1155 return make_cleanup (do_regfree_cleanup
, r
);
1158 /* Return an xmalloc'd error message resulting from a regular
1159 expression compilation failure. */
1162 get_regcomp_error (int code
, regex_t
*rx
)
1164 size_t length
= regerror (code
, rx
, NULL
, 0);
1165 char *result
= xmalloc (length
);
1167 regerror (code
, rx
, result
, length
);
1173 /* This function supports the query, nquery, and yquery functions.
1174 Ask user a y-or-n question and return 0 if answer is no, 1 if
1175 answer is yes, or default the answer to the specified default
1176 (for yquery or nquery). DEFCHAR may be 'y' or 'n' to provide a
1177 default answer, or '\0' for no default.
1178 CTLSTR is the control string and should end in "? ". It should
1179 not say how to answer, because we do that.
1180 ARGS are the arguments passed along with the CTLSTR argument to
1183 static int ATTRIBUTE_PRINTF (1, 0)
1184 defaulted_query (const char *ctlstr
, const char defchar
, va_list args
)
1190 char def_answer
, not_def_answer
;
1191 char *y_string
, *n_string
, *question
;
1193 /* Set up according to which answer is the default. */
1194 if (defchar
== '\0')
1198 not_def_answer
= 'N';
1202 else if (defchar
== 'y')
1206 not_def_answer
= 'N';
1214 not_def_answer
= 'Y';
1219 /* Automatically answer the default value if the user did not want
1220 prompts or the command was issued with the server prefix. */
1221 if (!confirm
|| server_command
)
1224 /* If input isn't coming from the user directly, just say what
1225 question we're asking, and then answer the default automatically. This
1226 way, important error messages don't get lost when talking to GDB
1228 if (! input_from_terminal_p ())
1231 vfprintf_filtered (gdb_stdout
, ctlstr
, args
);
1233 printf_filtered (_("(%s or %s) [answered %c; "
1234 "input not from terminal]\n"),
1235 y_string
, n_string
, def_answer
);
1236 gdb_flush (gdb_stdout
);
1241 if (deprecated_query_hook
)
1243 return deprecated_query_hook (ctlstr
, args
);
1246 /* Format the question outside of the loop, to avoid reusing args. */
1247 question
= xstrvprintf (ctlstr
, args
);
1251 wrap_here (""); /* Flush any buffered output. */
1252 gdb_flush (gdb_stdout
);
1254 if (annotation_level
> 1)
1255 printf_filtered (("\n\032\032pre-query\n"));
1257 fputs_filtered (question
, gdb_stdout
);
1258 printf_filtered (_("(%s or %s) "), y_string
, n_string
);
1260 if (annotation_level
> 1)
1261 printf_filtered (("\n\032\032query\n"));
1264 gdb_flush (gdb_stdout
);
1266 answer
= fgetc (stdin
);
1268 /* We expect fgetc to block until a character is read. But
1269 this may not be the case if the terminal was opened with
1270 the NONBLOCK flag. In that case, if there is nothing to
1271 read on stdin, fgetc returns EOF, but also sets the error
1272 condition flag on stdin and errno to EAGAIN. With a true
1273 EOF, stdin's error condition flag is not set.
1275 A situation where this behavior was observed is a pseudo
1277 while (answer
== EOF
&& ferror (stdin
) && errno
== EAGAIN
)
1279 /* Not a real EOF. Wait a little while and try again until
1280 we read something. */
1283 answer
= fgetc (stdin
);
1286 clearerr (stdin
); /* in case of C-d */
1287 if (answer
== EOF
) /* C-d */
1289 printf_filtered ("EOF [assumed %c]\n", def_answer
);
1293 /* Eat rest of input line, to EOF or newline. */
1297 ans2
= fgetc (stdin
);
1300 while (ans2
!= EOF
&& ans2
!= '\n' && ans2
!= '\r');
1304 /* Check answer. For the non-default, the user must specify
1305 the non-default explicitly. */
1306 if (answer
== not_def_answer
)
1308 retval
= !def_value
;
1311 /* Otherwise, if a default was specified, the user may either
1312 specify the required input or have it default by entering
1314 if (answer
== def_answer
1315 || (defchar
!= '\0' &&
1316 (answer
== '\n' || answer
== '\r' || answer
== EOF
)))
1321 /* Invalid entries are not defaulted and require another selection. */
1322 printf_filtered (_("Please answer %s or %s.\n"),
1323 y_string
, n_string
);
1327 if (annotation_level
> 1)
1328 printf_filtered (("\n\032\032post-query\n"));
1333 /* Ask user a y-or-n question and return 0 if answer is no, 1 if
1334 answer is yes, or 0 if answer is defaulted.
1335 Takes three args which are given to printf to print the question.
1336 The first, a control string, should end in "? ".
1337 It should not say how to answer, because we do that. */
1340 nquery (const char *ctlstr
, ...)
1345 va_start (args
, ctlstr
);
1346 ret
= defaulted_query (ctlstr
, 'n', args
);
1351 /* Ask user a y-or-n question and return 0 if answer is no, 1 if
1352 answer is yes, or 1 if answer is defaulted.
1353 Takes three args which are given to printf to print the question.
1354 The first, a control string, should end in "? ".
1355 It should not say how to answer, because we do that. */
1358 yquery (const char *ctlstr
, ...)
1363 va_start (args
, ctlstr
);
1364 ret
= defaulted_query (ctlstr
, 'y', args
);
1369 /* Ask user a y-or-n question and return 1 iff answer is yes.
1370 Takes three args which are given to printf to print the question.
1371 The first, a control string, should end in "? ".
1372 It should not say how to answer, because we do that. */
1375 query (const char *ctlstr
, ...)
1380 va_start (args
, ctlstr
);
1381 ret
= defaulted_query (ctlstr
, '\0', args
);
1386 /* A helper for parse_escape that converts a host character to a
1387 target character. C is the host character. If conversion is
1388 possible, then the target character is stored in *TARGET_C and the
1389 function returns 1. Otherwise, the function returns 0. */
1392 host_char_to_target (struct gdbarch
*gdbarch
, int c
, int *target_c
)
1394 struct obstack host_data
;
1396 struct cleanup
*cleanups
;
1399 obstack_init (&host_data
);
1400 cleanups
= make_cleanup_obstack_free (&host_data
);
1402 convert_between_encodings (target_charset (gdbarch
), host_charset (),
1403 &the_char
, 1, 1, &host_data
, translit_none
);
1405 if (obstack_object_size (&host_data
) == 1)
1408 *target_c
= *(char *) obstack_base (&host_data
);
1411 do_cleanups (cleanups
);
1415 /* Parse a C escape sequence. STRING_PTR points to a variable
1416 containing a pointer to the string to parse. That pointer
1417 should point to the character after the \. That pointer
1418 is updated past the characters we use. The value of the
1419 escape sequence is returned.
1421 A negative value means the sequence \ newline was seen,
1422 which is supposed to be equivalent to nothing at all.
1424 If \ is followed by a null character, we return a negative
1425 value and leave the string pointer pointing at the null character.
1427 If \ is followed by 000, we return 0 and leave the string pointer
1428 after the zeros. A value of 0 does not mean end of string. */
1431 parse_escape (struct gdbarch
*gdbarch
, char **string_ptr
)
1433 int target_char
= -2; /* Initialize to avoid GCC warnings. */
1434 int c
= *(*string_ptr
)++;
1453 int i
= host_hex_value (c
);
1458 if (isdigit (c
) && c
!= '8' && c
!= '9')
1462 i
+= host_hex_value (c
);
1498 if (!host_char_to_target (gdbarch
, c
, &target_char
))
1499 error (_("The escape sequence `\\%c' is equivalent to plain `%c',"
1500 " which has no equivalent\nin the `%s' character set."),
1501 c
, c
, target_charset (gdbarch
));
1505 /* Print the character C on STREAM as part of the contents of a literal
1506 string whose delimiter is QUOTER. Note that this routine should only
1507 be call for printing things which are independent of the language
1508 of the program being debugged. */
1511 printchar (int c
, void (*do_fputs
) (const char *, struct ui_file
*),
1512 void (*do_fprintf
) (struct ui_file
*, const char *, ...)
1513 ATTRIBUTE_FPTR_PRINTF_2
, struct ui_file
*stream
, int quoter
)
1515 c
&= 0xFF; /* Avoid sign bit follies */
1517 if (c
< 0x20 || /* Low control chars */
1518 (c
>= 0x7F && c
< 0xA0) || /* DEL, High controls */
1519 (sevenbit_strings
&& c
>= 0x80))
1520 { /* high order bit set */
1524 do_fputs ("\\n", stream
);
1527 do_fputs ("\\b", stream
);
1530 do_fputs ("\\t", stream
);
1533 do_fputs ("\\f", stream
);
1536 do_fputs ("\\r", stream
);
1539 do_fputs ("\\e", stream
);
1542 do_fputs ("\\a", stream
);
1545 do_fprintf (stream
, "\\%.3o", (unsigned int) c
);
1551 if (c
== '\\' || c
== quoter
)
1552 do_fputs ("\\", stream
);
1553 do_fprintf (stream
, "%c", c
);
1557 /* Print the character C on STREAM as part of the contents of a
1558 literal string whose delimiter is QUOTER. Note that these routines
1559 should only be call for printing things which are independent of
1560 the language of the program being debugged. */
1563 fputstr_filtered (const char *str
, int quoter
, struct ui_file
*stream
)
1566 printchar (*str
++, fputs_filtered
, fprintf_filtered
, stream
, quoter
);
1570 fputstr_unfiltered (const char *str
, int quoter
, struct ui_file
*stream
)
1573 printchar (*str
++, fputs_unfiltered
, fprintf_unfiltered
, stream
, quoter
);
1577 fputstrn_filtered (const char *str
, int n
, int quoter
,
1578 struct ui_file
*stream
)
1582 for (i
= 0; i
< n
; i
++)
1583 printchar (str
[i
], fputs_filtered
, fprintf_filtered
, stream
, quoter
);
1587 fputstrn_unfiltered (const char *str
, int n
, int quoter
,
1588 struct ui_file
*stream
)
1592 for (i
= 0; i
< n
; i
++)
1593 printchar (str
[i
], fputs_unfiltered
, fprintf_unfiltered
, stream
, quoter
);
1597 /* Number of lines per page or UINT_MAX if paging is disabled. */
1598 static unsigned int lines_per_page
;
1600 show_lines_per_page (struct ui_file
*file
, int from_tty
,
1601 struct cmd_list_element
*c
, const char *value
)
1603 fprintf_filtered (file
,
1604 _("Number of lines gdb thinks are in a page is %s.\n"),
1608 /* Number of chars per line or UINT_MAX if line folding is disabled. */
1609 static unsigned int chars_per_line
;
1611 show_chars_per_line (struct ui_file
*file
, int from_tty
,
1612 struct cmd_list_element
*c
, const char *value
)
1614 fprintf_filtered (file
,
1615 _("Number of characters gdb thinks "
1616 "are in a line is %s.\n"),
1620 /* Current count of lines printed on this page, chars on this line. */
1621 static unsigned int lines_printed
, chars_printed
;
1623 /* Buffer and start column of buffered text, for doing smarter word-
1624 wrapping. When someone calls wrap_here(), we start buffering output
1625 that comes through fputs_filtered(). If we see a newline, we just
1626 spit it out and forget about the wrap_here(). If we see another
1627 wrap_here(), we spit it out and remember the newer one. If we see
1628 the end of the line, we spit out a newline, the indent, and then
1629 the buffered output. */
1631 /* Malloc'd buffer with chars_per_line+2 bytes. Contains characters which
1632 are waiting to be output (they have already been counted in chars_printed).
1633 When wrap_buffer[0] is null, the buffer is empty. */
1634 static char *wrap_buffer
;
1636 /* Pointer in wrap_buffer to the next character to fill. */
1637 static char *wrap_pointer
;
1639 /* String to indent by if the wrap occurs. Must not be NULL if wrap_column
1641 static char *wrap_indent
;
1643 /* Column number on the screen where wrap_buffer begins, or 0 if wrapping
1644 is not in effect. */
1645 static int wrap_column
;
1648 /* Inialize the number of lines per page and chars per line. */
1651 init_page_info (void)
1655 lines_per_page
= UINT_MAX
;
1656 chars_per_line
= UINT_MAX
;
1660 if (!tui_get_command_dimension (&chars_per_line
, &lines_per_page
))
1665 #if defined(__GO32__)
1666 rows
= ScreenRows ();
1667 cols
= ScreenCols ();
1668 lines_per_page
= rows
;
1669 chars_per_line
= cols
;
1671 /* Make sure Readline has initialized its terminal settings. */
1672 rl_reset_terminal (NULL
);
1674 /* Get the screen size from Readline. */
1675 rl_get_screen_size (&rows
, &cols
);
1676 lines_per_page
= rows
;
1677 chars_per_line
= cols
;
1679 /* Readline should have fetched the termcap entry for us. */
1680 if (tgetnum ("li") < 0 || getenv ("EMACS"))
1682 /* The number of lines per page is not mentioned in the
1683 terminal description. This probably means that paging is
1684 not useful (e.g. emacs shell window), so disable paging. */
1685 lines_per_page
= UINT_MAX
;
1688 /* FIXME: Get rid of this junk. */
1689 #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER)
1690 SIGWINCH_HANDLER (SIGWINCH
);
1693 /* If the output is not a terminal, don't paginate it. */
1694 if (!ui_file_isatty (gdb_stdout
))
1695 lines_per_page
= UINT_MAX
;
1703 /* Helper for make_cleanup_restore_page_info. */
1706 do_restore_page_info_cleanup (void *arg
)
1712 /* Provide cleanup for restoring the terminal size. */
1715 make_cleanup_restore_page_info (void)
1717 struct cleanup
*back_to
;
1719 back_to
= make_cleanup (do_restore_page_info_cleanup
, NULL
);
1720 make_cleanup_restore_uinteger (&lines_per_page
);
1721 make_cleanup_restore_uinteger (&chars_per_line
);
1726 /* Temporarily set BATCH_FLAG and the associated unlimited terminal size.
1727 Provide cleanup for restoring the original state. */
1730 set_batch_flag_and_make_cleanup_restore_page_info (void)
1732 struct cleanup
*back_to
= make_cleanup_restore_page_info ();
1734 make_cleanup_restore_integer (&batch_flag
);
1741 /* Set the screen size based on LINES_PER_PAGE and CHARS_PER_LINE. */
1744 set_screen_size (void)
1746 int rows
= lines_per_page
;
1747 int cols
= chars_per_line
;
1755 /* Update Readline's idea of the terminal size. */
1756 rl_set_screen_size (rows
, cols
);
1759 /* Reinitialize WRAP_BUFFER according to the current value of
1765 if (chars_per_line
== 0)
1770 wrap_buffer
= (char *) xmalloc (chars_per_line
+ 2);
1771 wrap_buffer
[0] = '\0';
1774 wrap_buffer
= (char *) xrealloc (wrap_buffer
, chars_per_line
+ 2);
1775 wrap_pointer
= wrap_buffer
; /* Start it at the beginning. */
1779 set_width_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
1786 set_height_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
1791 /* Wait, so the user can read what's on the screen. Prompt the user
1792 to continue by pressing RETURN. */
1795 prompt_for_continue (void)
1798 char cont_prompt
[120];
1800 if (annotation_level
> 1)
1801 printf_unfiltered (("\n\032\032pre-prompt-for-continue\n"));
1803 strcpy (cont_prompt
,
1804 "---Type <return> to continue, or q <return> to quit---");
1805 if (annotation_level
> 1)
1806 strcat (cont_prompt
, "\n\032\032prompt-for-continue\n");
1808 /* We must do this *before* we call gdb_readline, else it will eventually
1809 call us -- thinking that we're trying to print beyond the end of the
1811 reinitialize_more_filter ();
1814 /* On a real operating system, the user can quit with SIGINT.
1817 'q' is provided on all systems so users don't have to change habits
1818 from system to system, and because telling them what to do in
1819 the prompt is more user-friendly than expecting them to think of
1821 /* Call readline, not gdb_readline, because GO32 readline handles control-C
1822 whereas control-C to gdb_readline will cause the user to get dumped
1824 ignore
= gdb_readline_wrapper (cont_prompt
);
1826 if (annotation_level
> 1)
1827 printf_unfiltered (("\n\032\032post-prompt-for-continue\n"));
1833 while (*p
== ' ' || *p
== '\t')
1836 async_request_quit (0);
1841 /* Now we have to do this again, so that GDB will know that it doesn't
1842 need to save the ---Type <return>--- line at the top of the screen. */
1843 reinitialize_more_filter ();
1845 dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */
1848 /* Reinitialize filter; ie. tell it to reset to original values. */
1851 reinitialize_more_filter (void)
1857 /* Indicate that if the next sequence of characters overflows the line,
1858 a newline should be inserted here rather than when it hits the end.
1859 If INDENT is non-null, it is a string to be printed to indent the
1860 wrapped part on the next line. INDENT must remain accessible until
1861 the next call to wrap_here() or until a newline is printed through
1864 If the line is already overfull, we immediately print a newline and
1865 the indentation, and disable further wrapping.
1867 If we don't know the width of lines, but we know the page height,
1868 we must not wrap words, but should still keep track of newlines
1869 that were explicitly printed.
1871 INDENT should not contain tabs, as that will mess up the char count
1872 on the next line. FIXME.
1874 This routine is guaranteed to force out any output which has been
1875 squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be
1876 used to force out output from the wrap_buffer. */
1879 wrap_here (char *indent
)
1881 /* This should have been allocated, but be paranoid anyway. */
1883 internal_error (__FILE__
, __LINE__
,
1884 _("failed internal consistency check"));
1888 *wrap_pointer
= '\0';
1889 fputs_unfiltered (wrap_buffer
, gdb_stdout
);
1891 wrap_pointer
= wrap_buffer
;
1892 wrap_buffer
[0] = '\0';
1893 if (chars_per_line
== UINT_MAX
) /* No line overflow checking. */
1897 else if (chars_printed
>= chars_per_line
)
1899 puts_filtered ("\n");
1901 puts_filtered (indent
);
1906 wrap_column
= chars_printed
;
1910 wrap_indent
= indent
;
1914 /* Print input string to gdb_stdout, filtered, with wrap,
1915 arranging strings in columns of n chars. String can be
1916 right or left justified in the column. Never prints
1917 trailing spaces. String should never be longer than
1918 width. FIXME: this could be useful for the EXAMINE
1919 command, which currently doesn't tabulate very well. */
1922 puts_filtered_tabular (char *string
, int width
, int right
)
1928 gdb_assert (chars_per_line
> 0);
1929 if (chars_per_line
== UINT_MAX
)
1931 fputs_filtered (string
, gdb_stdout
);
1932 fputs_filtered ("\n", gdb_stdout
);
1936 if (((chars_printed
- 1) / width
+ 2) * width
>= chars_per_line
)
1937 fputs_filtered ("\n", gdb_stdout
);
1939 if (width
>= chars_per_line
)
1940 width
= chars_per_line
- 1;
1942 stringlen
= strlen (string
);
1944 if (chars_printed
> 0)
1945 spaces
= width
- (chars_printed
- 1) % width
- 1;
1947 spaces
+= width
- stringlen
;
1949 spacebuf
= alloca (spaces
+ 1);
1950 spacebuf
[spaces
] = '\0';
1952 spacebuf
[spaces
] = ' ';
1954 fputs_filtered (spacebuf
, gdb_stdout
);
1955 fputs_filtered (string
, gdb_stdout
);
1959 /* Ensure that whatever gets printed next, using the filtered output
1960 commands, starts at the beginning of the line. I.e. if there is
1961 any pending output for the current line, flush it and start a new
1962 line. Otherwise do nothing. */
1967 if (chars_printed
> 0)
1969 puts_filtered ("\n");
1974 /* Like fputs but if FILTER is true, pause after every screenful.
1976 Regardless of FILTER can wrap at points other than the final
1977 character of a line.
1979 Unlike fputs, fputs_maybe_filtered does not return a value.
1980 It is OK for LINEBUFFER to be NULL, in which case just don't print
1983 Note that a longjmp to top level may occur in this routine (only if
1984 FILTER is true) (since prompt_for_continue may do so) so this
1985 routine should not be called when cleanups are not in place. */
1988 fputs_maybe_filtered (const char *linebuffer
, struct ui_file
*stream
,
1991 const char *lineptr
;
1993 if (linebuffer
== 0)
1996 /* Don't do any filtering if it is disabled. */
1997 if (stream
!= gdb_stdout
1998 || !pagination_enabled
2000 || (lines_per_page
== UINT_MAX
&& chars_per_line
== UINT_MAX
)
2001 || top_level_interpreter () == NULL
2002 || ui_out_is_mi_like_p (interp_ui_out (top_level_interpreter ())))
2004 fputs_unfiltered (linebuffer
, stream
);
2008 /* Go through and output each character. Show line extension
2009 when this is necessary; prompt user for new page when this is
2012 lineptr
= linebuffer
;
2015 /* Possible new page. */
2016 if (filter
&& (lines_printed
>= lines_per_page
- 1))
2017 prompt_for_continue ();
2019 while (*lineptr
&& *lineptr
!= '\n')
2021 /* Print a single line. */
2022 if (*lineptr
== '\t')
2025 *wrap_pointer
++ = '\t';
2027 fputc_unfiltered ('\t', stream
);
2028 /* Shifting right by 3 produces the number of tab stops
2029 we have already passed, and then adding one and
2030 shifting left 3 advances to the next tab stop. */
2031 chars_printed
= ((chars_printed
>> 3) + 1) << 3;
2037 *wrap_pointer
++ = *lineptr
;
2039 fputc_unfiltered (*lineptr
, stream
);
2044 if (chars_printed
>= chars_per_line
)
2046 unsigned int save_chars
= chars_printed
;
2050 /* If we aren't actually wrapping, don't output newline --
2051 if chars_per_line is right, we probably just overflowed
2052 anyway; if it's wrong, let us keep going. */
2054 fputc_unfiltered ('\n', stream
);
2056 /* Possible new page. */
2057 if (lines_printed
>= lines_per_page
- 1)
2058 prompt_for_continue ();
2060 /* Now output indentation and wrapped string. */
2063 fputs_unfiltered (wrap_indent
, stream
);
2064 *wrap_pointer
= '\0'; /* Null-terminate saved stuff, */
2065 fputs_unfiltered (wrap_buffer
, stream
); /* and eject it. */
2066 /* FIXME, this strlen is what prevents wrap_indent from
2067 containing tabs. However, if we recurse to print it
2068 and count its chars, we risk trouble if wrap_indent is
2069 longer than (the user settable) chars_per_line.
2070 Note also that this can set chars_printed > chars_per_line
2071 if we are printing a long string. */
2072 chars_printed
= strlen (wrap_indent
)
2073 + (save_chars
- wrap_column
);
2074 wrap_pointer
= wrap_buffer
; /* Reset buffer */
2075 wrap_buffer
[0] = '\0';
2076 wrap_column
= 0; /* And disable fancy wrap */
2081 if (*lineptr
== '\n')
2084 wrap_here ((char *) 0); /* Spit out chars, cancel
2087 fputc_unfiltered ('\n', stream
);
2094 fputs_filtered (const char *linebuffer
, struct ui_file
*stream
)
2096 fputs_maybe_filtered (linebuffer
, stream
, 1);
2100 putchar_unfiltered (int c
)
2104 ui_file_write (gdb_stdout
, &buf
, 1);
2108 /* Write character C to gdb_stdout using GDB's paging mechanism and return C.
2109 May return nonlocally. */
2112 putchar_filtered (int c
)
2114 return fputc_filtered (c
, gdb_stdout
);
2118 fputc_unfiltered (int c
, struct ui_file
*stream
)
2122 ui_file_write (stream
, &buf
, 1);
2127 fputc_filtered (int c
, struct ui_file
*stream
)
2133 fputs_filtered (buf
, stream
);
2137 /* puts_debug is like fputs_unfiltered, except it prints special
2138 characters in printable fashion. */
2141 puts_debug (char *prefix
, char *string
, char *suffix
)
2145 /* Print prefix and suffix after each line. */
2146 static int new_line
= 1;
2147 static int return_p
= 0;
2148 static char *prev_prefix
= "";
2149 static char *prev_suffix
= "";
2151 if (*string
== '\n')
2154 /* If the prefix is changing, print the previous suffix, a new line,
2155 and the new prefix. */
2156 if ((return_p
|| (strcmp (prev_prefix
, prefix
) != 0)) && !new_line
)
2158 fputs_unfiltered (prev_suffix
, gdb_stdlog
);
2159 fputs_unfiltered ("\n", gdb_stdlog
);
2160 fputs_unfiltered (prefix
, gdb_stdlog
);
2163 /* Print prefix if we printed a newline during the previous call. */
2167 fputs_unfiltered (prefix
, gdb_stdlog
);
2170 prev_prefix
= prefix
;
2171 prev_suffix
= suffix
;
2173 /* Output characters in a printable format. */
2174 while ((ch
= *string
++) != '\0')
2180 fputc_unfiltered (ch
, gdb_stdlog
);
2183 fprintf_unfiltered (gdb_stdlog
, "\\x%02x", ch
& 0xff);
2187 fputs_unfiltered ("\\\\", gdb_stdlog
);
2190 fputs_unfiltered ("\\b", gdb_stdlog
);
2193 fputs_unfiltered ("\\f", gdb_stdlog
);
2197 fputs_unfiltered ("\\n", gdb_stdlog
);
2200 fputs_unfiltered ("\\r", gdb_stdlog
);
2203 fputs_unfiltered ("\\t", gdb_stdlog
);
2206 fputs_unfiltered ("\\v", gdb_stdlog
);
2210 return_p
= ch
== '\r';
2213 /* Print suffix if we printed a newline. */
2216 fputs_unfiltered (suffix
, gdb_stdlog
);
2217 fputs_unfiltered ("\n", gdb_stdlog
);
2222 /* Print a variable number of ARGS using format FORMAT. If this
2223 information is going to put the amount written (since the last call
2224 to REINITIALIZE_MORE_FILTER or the last page break) over the page size,
2225 call prompt_for_continue to get the users permision to continue.
2227 Unlike fprintf, this function does not return a value.
2229 We implement three variants, vfprintf (takes a vararg list and stream),
2230 fprintf (takes a stream to write on), and printf (the usual).
2232 Note also that a longjmp to top level may occur in this routine
2233 (since prompt_for_continue may do so) so this routine should not be
2234 called when cleanups are not in place. */
2237 vfprintf_maybe_filtered (struct ui_file
*stream
, const char *format
,
2238 va_list args
, int filter
)
2241 struct cleanup
*old_cleanups
;
2243 linebuffer
= xstrvprintf (format
, args
);
2244 old_cleanups
= make_cleanup (xfree
, linebuffer
);
2245 fputs_maybe_filtered (linebuffer
, stream
, filter
);
2246 do_cleanups (old_cleanups
);
2251 vfprintf_filtered (struct ui_file
*stream
, const char *format
, va_list args
)
2253 vfprintf_maybe_filtered (stream
, format
, args
, 1);
2257 vfprintf_unfiltered (struct ui_file
*stream
, const char *format
, va_list args
)
2260 struct cleanup
*old_cleanups
;
2262 linebuffer
= xstrvprintf (format
, args
);
2263 old_cleanups
= make_cleanup (xfree
, linebuffer
);
2264 if (debug_timestamp
&& stream
== gdb_stdlog
)
2270 gettimeofday (&tm
, NULL
);
2272 len
= strlen (linebuffer
);
2273 need_nl
= (len
> 0 && linebuffer
[len
- 1] != '\n');
2275 timestamp
= xstrprintf ("%ld:%ld %s%s",
2276 (long) tm
.tv_sec
, (long) tm
.tv_usec
,
2278 need_nl
? "\n": "");
2279 make_cleanup (xfree
, timestamp
);
2280 fputs_unfiltered (timestamp
, stream
);
2283 fputs_unfiltered (linebuffer
, stream
);
2284 do_cleanups (old_cleanups
);
2288 vprintf_filtered (const char *format
, va_list args
)
2290 vfprintf_maybe_filtered (gdb_stdout
, format
, args
, 1);
2294 vprintf_unfiltered (const char *format
, va_list args
)
2296 vfprintf_unfiltered (gdb_stdout
, format
, args
);
2300 fprintf_filtered (struct ui_file
*stream
, const char *format
, ...)
2304 va_start (args
, format
);
2305 vfprintf_filtered (stream
, format
, args
);
2310 fprintf_unfiltered (struct ui_file
*stream
, const char *format
, ...)
2314 va_start (args
, format
);
2315 vfprintf_unfiltered (stream
, format
, args
);
2319 /* Like fprintf_filtered, but prints its result indented.
2320 Called as fprintfi_filtered (spaces, stream, format, ...); */
2323 fprintfi_filtered (int spaces
, struct ui_file
*stream
, const char *format
,
2328 va_start (args
, format
);
2329 print_spaces_filtered (spaces
, stream
);
2331 vfprintf_filtered (stream
, format
, args
);
2337 printf_filtered (const char *format
, ...)
2341 va_start (args
, format
);
2342 vfprintf_filtered (gdb_stdout
, format
, args
);
2348 printf_unfiltered (const char *format
, ...)
2352 va_start (args
, format
);
2353 vfprintf_unfiltered (gdb_stdout
, format
, args
);
2357 /* Like printf_filtered, but prints it's result indented.
2358 Called as printfi_filtered (spaces, format, ...); */
2361 printfi_filtered (int spaces
, const char *format
, ...)
2365 va_start (args
, format
);
2366 print_spaces_filtered (spaces
, gdb_stdout
);
2367 vfprintf_filtered (gdb_stdout
, format
, args
);
2371 /* Easy -- but watch out!
2373 This routine is *not* a replacement for puts()! puts() appends a newline.
2374 This one doesn't, and had better not! */
2377 puts_filtered (const char *string
)
2379 fputs_filtered (string
, gdb_stdout
);
2383 puts_unfiltered (const char *string
)
2385 fputs_unfiltered (string
, gdb_stdout
);
2388 /* Return a pointer to N spaces and a null. The pointer is good
2389 until the next call to here. */
2394 static char *spaces
= 0;
2395 static int max_spaces
= -1;
2401 spaces
= (char *) xmalloc (n
+ 1);
2402 for (t
= spaces
+ n
; t
!= spaces
;)
2408 return spaces
+ max_spaces
- n
;
2411 /* Print N spaces. */
2413 print_spaces_filtered (int n
, struct ui_file
*stream
)
2415 fputs_filtered (n_spaces (n
), stream
);
2418 /* C++/ObjC demangler stuff. */
2420 /* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language
2421 LANG, using demangling args ARG_MODE, and print it filtered to STREAM.
2422 If the name is not mangled, or the language for the name is unknown, or
2423 demangling is off, the name is printed in its "raw" form. */
2426 fprintf_symbol_filtered (struct ui_file
*stream
, const char *name
,
2427 enum language lang
, int arg_mode
)
2433 /* If user wants to see raw output, no problem. */
2436 fputs_filtered (name
, stream
);
2440 demangled
= language_demangle (language_def (lang
), name
, arg_mode
);
2441 fputs_filtered (demangled
? demangled
: name
, stream
);
2442 if (demangled
!= NULL
)
2450 /* Do a strcmp() type operation on STRING1 and STRING2, ignoring any
2451 differences in whitespace. Returns 0 if they match, non-zero if they
2452 don't (slightly different than strcmp()'s range of return values).
2454 As an extra hack, string1=="FOO(ARGS)" matches string2=="FOO".
2455 This "feature" is useful when searching for matching C++ function names
2456 (such as if the user types 'break FOO', where FOO is a mangled C++
2460 strcmp_iw (const char *string1
, const char *string2
)
2462 while ((*string1
!= '\0') && (*string2
!= '\0'))
2464 while (isspace (*string1
))
2468 while (isspace (*string2
))
2472 if (case_sensitivity
== case_sensitive_on
&& *string1
!= *string2
)
2474 if (case_sensitivity
== case_sensitive_off
2475 && (tolower ((unsigned char) *string1
)
2476 != tolower ((unsigned char) *string2
)))
2478 if (*string1
!= '\0')
2484 return (*string1
!= '\0' && *string1
!= '(') || (*string2
!= '\0');
2487 /* This is like strcmp except that it ignores whitespace and treats
2488 '(' as the first non-NULL character in terms of ordering. Like
2489 strcmp (and unlike strcmp_iw), it returns negative if STRING1 <
2490 STRING2, 0 if STRING2 = STRING2, and positive if STRING1 > STRING2
2491 according to that ordering.
2493 If a list is sorted according to this function and if you want to
2494 find names in the list that match some fixed NAME according to
2495 strcmp_iw(LIST_ELT, NAME), then the place to start looking is right
2496 where this function would put NAME.
2498 This function must be neutral to the CASE_SENSITIVITY setting as the user
2499 may choose it during later lookup. Therefore this function always sorts
2500 primarily case-insensitively and secondarily case-sensitively.
2502 Here are some examples of why using strcmp to sort is a bad idea:
2506 Say your partial symtab contains: "foo<char *>", "goo". Then, if
2507 we try to do a search for "foo<char*>", strcmp will locate this
2508 after "foo<char *>" and before "goo". Then lookup_partial_symbol
2509 will start looking at strings beginning with "goo", and will never
2510 see the correct match of "foo<char *>".
2512 Parenthesis example:
2514 In practice, this is less like to be an issue, but I'll give it a
2515 shot. Let's assume that '$' is a legitimate character to occur in
2516 symbols. (Which may well even be the case on some systems.) Then
2517 say that the partial symbol table contains "foo$" and "foo(int)".
2518 strcmp will put them in this order, since '$' < '('. Now, if the
2519 user searches for "foo", then strcmp will sort "foo" before "foo$".
2520 Then lookup_partial_symbol will notice that strcmp_iw("foo$",
2521 "foo") is false, so it won't proceed to the actual match of
2522 "foo(int)" with "foo". */
2525 strcmp_iw_ordered (const char *string1
, const char *string2
)
2527 const char *saved_string1
= string1
, *saved_string2
= string2
;
2528 enum case_sensitivity case_pass
= case_sensitive_off
;
2532 /* C1 and C2 are valid only if *string1 != '\0' && *string2 != '\0'.
2533 Provide stub characters if we are already at the end of one of the
2535 char c1
= 'X', c2
= 'X';
2537 while (*string1
!= '\0' && *string2
!= '\0')
2539 while (isspace (*string1
))
2541 while (isspace (*string2
))
2546 case case_sensitive_off
:
2547 c1
= tolower ((unsigned char) *string1
);
2548 c2
= tolower ((unsigned char) *string2
);
2550 case case_sensitive_on
:
2558 if (*string1
!= '\0')
2567 /* Characters are non-equal unless they're both '\0'; we want to
2568 make sure we get the comparison right according to our
2569 comparison in the cases where one of them is '\0' or '('. */
2571 if (*string2
== '\0')
2576 if (*string2
== '\0')
2581 if (*string2
== '\0' || *string2
== '(')
2590 if (case_pass
== case_sensitive_on
)
2593 /* Otherwise the strings were equal in case insensitive way, make
2594 a more fine grained comparison in a case sensitive way. */
2596 case_pass
= case_sensitive_on
;
2597 string1
= saved_string1
;
2598 string2
= saved_string2
;
2602 /* A simple comparison function with opposite semantics to strcmp. */
2605 streq (const char *lhs
, const char *rhs
)
2607 return !strcmp (lhs
, rhs
);
2613 ** Answer whether string_to_compare is a full or partial match to
2614 ** template_string. The partial match must be in sequence starting
2618 subset_compare (char *string_to_compare
, char *template_string
)
2622 if (template_string
!= (char *) NULL
&& string_to_compare
!= (char *) NULL
2623 && strlen (string_to_compare
) <= strlen (template_string
))
2626 (template_string
, string_to_compare
, strlen (string_to_compare
)) == 0);
2633 pagination_on_command (char *arg
, int from_tty
)
2635 pagination_enabled
= 1;
2639 pagination_off_command (char *arg
, int from_tty
)
2641 pagination_enabled
= 0;
2645 show_debug_timestamp (struct ui_file
*file
, int from_tty
,
2646 struct cmd_list_element
*c
, const char *value
)
2648 fprintf_filtered (file
, _("Timestamping debugging messages is %s.\n"),
2654 initialize_utils (void)
2656 add_setshow_uinteger_cmd ("width", class_support
, &chars_per_line
, _("\
2657 Set number of characters gdb thinks are in a line."), _("\
2658 Show number of characters gdb thinks are in a line."), NULL
,
2660 show_chars_per_line
,
2661 &setlist
, &showlist
);
2663 add_setshow_uinteger_cmd ("height", class_support
, &lines_per_page
, _("\
2664 Set number of lines gdb thinks are in a page."), _("\
2665 Show number of lines gdb thinks are in a page."), NULL
,
2667 show_lines_per_page
,
2668 &setlist
, &showlist
);
2672 add_setshow_boolean_cmd ("pagination", class_support
,
2673 &pagination_enabled
, _("\
2674 Set state of pagination."), _("\
2675 Show state of pagination."), NULL
,
2677 show_pagination_enabled
,
2678 &setlist
, &showlist
);
2682 add_com ("am", class_support
, pagination_on_command
,
2683 _("Enable pagination"));
2684 add_com ("sm", class_support
, pagination_off_command
,
2685 _("Disable pagination"));
2688 add_setshow_boolean_cmd ("sevenbit-strings", class_support
,
2689 &sevenbit_strings
, _("\
2690 Set printing of 8-bit characters in strings as \\nnn."), _("\
2691 Show printing of 8-bit characters in strings as \\nnn."), NULL
,
2693 show_sevenbit_strings
,
2694 &setprintlist
, &showprintlist
);
2696 add_setshow_boolean_cmd ("timestamp", class_maintenance
,
2697 &debug_timestamp
, _("\
2698 Set timestamping of debugging messages."), _("\
2699 Show timestamping of debugging messages."), _("\
2700 When set, debugging messages will be marked with seconds and microseconds."),
2702 show_debug_timestamp
,
2703 &setdebuglist
, &showdebuglist
);
2706 /* Machine specific function to handle SIGWINCH signal. */
2708 #ifdef SIGWINCH_HANDLER_BODY
2709 SIGWINCH_HANDLER_BODY
2711 /* Print routines to handle variable size regs, etc. */
2712 /* Temporary storage using circular buffer. */
2718 static char buf
[NUMCELLS
][CELLSIZE
];
2719 static int cell
= 0;
2721 if (++cell
>= NUMCELLS
)
2727 paddress (struct gdbarch
*gdbarch
, CORE_ADDR addr
)
2729 /* Truncate address to the size of a target address, avoiding shifts
2730 larger or equal than the width of a CORE_ADDR. The local
2731 variable ADDR_BIT stops the compiler reporting a shift overflow
2732 when it won't occur. */
2733 /* NOTE: This assumes that the significant address information is
2734 kept in the least significant bits of ADDR - the upper bits were
2735 either zero or sign extended. Should gdbarch_address_to_pointer or
2736 some ADDRESS_TO_PRINTABLE() be used to do the conversion? */
2738 int addr_bit
= gdbarch_addr_bit (gdbarch
);
2740 if (addr_bit
< (sizeof (CORE_ADDR
) * HOST_CHAR_BIT
))
2741 addr
&= ((CORE_ADDR
) 1 << addr_bit
) - 1;
2742 return hex_string (addr
);
2745 /* This function is described in "defs.h". */
2748 print_core_address (struct gdbarch
*gdbarch
, CORE_ADDR address
)
2750 int addr_bit
= gdbarch_addr_bit (gdbarch
);
2752 if (addr_bit
< (sizeof (CORE_ADDR
) * HOST_CHAR_BIT
))
2753 address
&= ((CORE_ADDR
) 1 << addr_bit
) - 1;
2755 /* FIXME: cagney/2002-05-03: Need local_address_string() function
2756 that returns the language localized string formatted to a width
2757 based on gdbarch_addr_bit. */
2759 return hex_string_custom (address
, 8);
2761 return hex_string_custom (address
, 16);
2764 /* Callback hash_f for htab_create_alloc or htab_create_alloc_ex. */
2767 core_addr_hash (const void *ap
)
2769 const CORE_ADDR
*addrp
= ap
;
2774 /* Callback eq_f for htab_create_alloc or htab_create_alloc_ex. */
2777 core_addr_eq (const void *ap
, const void *bp
)
2779 const CORE_ADDR
*addr_ap
= ap
;
2780 const CORE_ADDR
*addr_bp
= bp
;
2782 return *addr_ap
== *addr_bp
;
2786 decimal2str (char *sign
, ULONGEST addr
, int width
)
2788 /* Steal code from valprint.c:print_decimal(). Should this worry
2789 about the real size of addr as the above does? */
2790 unsigned long temp
[3];
2791 char *str
= get_cell ();
2796 temp
[i
] = addr
% (1000 * 1000 * 1000);
2797 addr
/= (1000 * 1000 * 1000);
2801 while (addr
!= 0 && i
< (sizeof (temp
) / sizeof (temp
[0])));
2810 xsnprintf (str
, CELLSIZE
, "%s%0*lu", sign
, width
, temp
[0]);
2813 xsnprintf (str
, CELLSIZE
, "%s%0*lu%09lu", sign
, width
,
2817 xsnprintf (str
, CELLSIZE
, "%s%0*lu%09lu%09lu", sign
, width
,
2818 temp
[2], temp
[1], temp
[0]);
2821 internal_error (__FILE__
, __LINE__
,
2822 _("failed internal consistency check"));
2829 octal2str (ULONGEST addr
, int width
)
2831 unsigned long temp
[3];
2832 char *str
= get_cell ();
2837 temp
[i
] = addr
% (0100000 * 0100000);
2838 addr
/= (0100000 * 0100000);
2842 while (addr
!= 0 && i
< (sizeof (temp
) / sizeof (temp
[0])));
2852 xsnprintf (str
, CELLSIZE
, "%*o", width
, 0);
2854 xsnprintf (str
, CELLSIZE
, "0%0*lo", width
, temp
[0]);
2857 xsnprintf (str
, CELLSIZE
, "0%0*lo%010lo", width
, temp
[1], temp
[0]);
2860 xsnprintf (str
, CELLSIZE
, "0%0*lo%010lo%010lo", width
,
2861 temp
[2], temp
[1], temp
[0]);
2864 internal_error (__FILE__
, __LINE__
,
2865 _("failed internal consistency check"));
2872 pulongest (ULONGEST u
)
2874 return decimal2str ("", u
, 0);
2878 plongest (LONGEST l
)
2881 return decimal2str ("-", -l
, 0);
2883 return decimal2str ("", l
, 0);
2886 /* Eliminate warning from compiler on 32-bit systems. */
2887 static int thirty_two
= 32;
2890 phex (ULONGEST l
, int sizeof_l
)
2898 xsnprintf (str
, CELLSIZE
, "%08lx%08lx",
2899 (unsigned long) (l
>> thirty_two
),
2900 (unsigned long) (l
& 0xffffffff));
2904 xsnprintf (str
, CELLSIZE
, "%08lx", (unsigned long) l
);
2908 xsnprintf (str
, CELLSIZE
, "%04x", (unsigned short) (l
& 0xffff));
2911 str
= phex (l
, sizeof (l
));
2919 phex_nz (ULONGEST l
, int sizeof_l
)
2927 unsigned long high
= (unsigned long) (l
>> thirty_two
);
2931 xsnprintf (str
, CELLSIZE
, "%lx",
2932 (unsigned long) (l
& 0xffffffff));
2934 xsnprintf (str
, CELLSIZE
, "%lx%08lx", high
,
2935 (unsigned long) (l
& 0xffffffff));
2940 xsnprintf (str
, CELLSIZE
, "%lx", (unsigned long) l
);
2944 xsnprintf (str
, CELLSIZE
, "%x", (unsigned short) (l
& 0xffff));
2947 str
= phex_nz (l
, sizeof (l
));
2954 /* Converts a LONGEST to a C-format hexadecimal literal and stores it
2955 in a static string. Returns a pointer to this string. */
2957 hex_string (LONGEST num
)
2959 char *result
= get_cell ();
2961 xsnprintf (result
, CELLSIZE
, "0x%s", phex_nz (num
, sizeof (num
)));
2965 /* Converts a LONGEST number to a C-format hexadecimal literal and
2966 stores it in a static string. Returns a pointer to this string
2967 that is valid until the next call. The number is padded on the
2968 left with 0s to at least WIDTH characters. */
2970 hex_string_custom (LONGEST num
, int width
)
2972 char *result
= get_cell ();
2973 char *result_end
= result
+ CELLSIZE
- 1;
2974 const char *hex
= phex_nz (num
, sizeof (num
));
2975 int hex_len
= strlen (hex
);
2977 if (hex_len
> width
)
2979 if (width
+ 2 >= CELLSIZE
)
2980 internal_error (__FILE__
, __LINE__
, _("\
2981 hex_string_custom: insufficient space to store result"));
2983 strcpy (result_end
- width
- 2, "0x");
2984 memset (result_end
- width
, '0', width
);
2985 strcpy (result_end
- hex_len
, hex
);
2986 return result_end
- width
- 2;
2989 /* Convert VAL to a numeral in the given radix. For
2990 * radix 10, IS_SIGNED may be true, indicating a signed quantity;
2991 * otherwise VAL is interpreted as unsigned. If WIDTH is supplied,
2992 * it is the minimum width (0-padded if needed). USE_C_FORMAT means
2993 * to use C format in all cases. If it is false, then 'x'
2994 * and 'o' formats do not include a prefix (0x or leading 0). */
2997 int_string (LONGEST val
, int radix
, int is_signed
, int width
,
3007 result
= hex_string (val
);
3009 result
= hex_string_custom (val
, width
);
3016 if (is_signed
&& val
< 0)
3017 return decimal2str ("-", -val
, width
);
3019 return decimal2str ("", val
, width
);
3023 char *result
= octal2str (val
, width
);
3025 if (use_c_format
|| val
== 0)
3031 internal_error (__FILE__
, __LINE__
,
3032 _("failed internal consistency check"));
3036 /* Convert a CORE_ADDR into a string. */
3038 core_addr_to_string (const CORE_ADDR addr
)
3040 char *str
= get_cell ();
3043 strcat (str
, phex (addr
, sizeof (addr
)));
3048 core_addr_to_string_nz (const CORE_ADDR addr
)
3050 char *str
= get_cell ();
3053 strcat (str
, phex_nz (addr
, sizeof (addr
)));
3057 /* Convert a string back into a CORE_ADDR. */
3059 string_to_core_addr (const char *my_string
)
3063 if (my_string
[0] == '0' && tolower (my_string
[1]) == 'x')
3065 /* Assume that it is in hex. */
3068 for (i
= 2; my_string
[i
] != '\0'; i
++)
3070 if (isdigit (my_string
[i
]))
3071 addr
= (my_string
[i
] - '0') + (addr
* 16);
3072 else if (isxdigit (my_string
[i
]))
3073 addr
= (tolower (my_string
[i
]) - 'a' + 0xa) + (addr
* 16);
3075 error (_("invalid hex \"%s\""), my_string
);
3080 /* Assume that it is in decimal. */
3083 for (i
= 0; my_string
[i
] != '\0'; i
++)
3085 if (isdigit (my_string
[i
]))
3086 addr
= (my_string
[i
] - '0') + (addr
* 10);
3088 error (_("invalid decimal \"%s\""), my_string
);
3096 host_address_to_string (const void *addr
)
3098 char *str
= get_cell ();
3100 xsnprintf (str
, CELLSIZE
, "0x%s", phex_nz ((uintptr_t) addr
, sizeof (addr
)));
3105 gdb_realpath (const char *filename
)
3107 /* Method 1: The system has a compile time upper bound on a filename
3108 path. Use that and realpath() to canonicalize the name. This is
3109 the most common case. Note that, if there isn't a compile time
3110 upper bound, you want to avoid realpath() at all costs. */
3111 #if defined(HAVE_REALPATH)
3113 # if defined (PATH_MAX)
3115 # define USE_REALPATH
3116 # elif defined (MAXPATHLEN)
3117 char buf
[MAXPATHLEN
];
3118 # define USE_REALPATH
3120 # if defined (USE_REALPATH)
3121 const char *rp
= realpath (filename
, buf
);
3125 return xstrdup (rp
);
3128 #endif /* HAVE_REALPATH */
3130 /* Method 2: The host system (i.e., GNU) has the function
3131 canonicalize_file_name() which malloc's a chunk of memory and
3132 returns that, use that. */
3133 #if defined(HAVE_CANONICALIZE_FILE_NAME)
3135 char *rp
= canonicalize_file_name (filename
);
3138 return xstrdup (filename
);
3144 /* FIXME: cagney/2002-11-13:
3146 Method 2a: Use realpath() with a NULL buffer. Some systems, due
3147 to the problems described in method 3, have modified their
3148 realpath() implementation so that it will allocate a buffer when
3149 NULL is passed in. Before this can be used, though, some sort of
3150 configure time test would need to be added. Otherwize the code
3151 will likely core dump. */
3153 /* Method 3: Now we're getting desperate! The system doesn't have a
3154 compile time buffer size and no alternative function. Query the
3155 OS, using pathconf(), for the buffer limit. Care is needed
3156 though, some systems do not limit PATH_MAX (return -1 for
3157 pathconf()) making it impossible to pass a correctly sized buffer
3158 to realpath() (it could always overflow). On those systems, we
3160 #if defined (HAVE_REALPATH) && defined (HAVE_UNISTD_H) && defined(HAVE_ALLOCA)
3162 /* Find out the max path size. */
3163 long path_max
= pathconf ("/", _PC_PATH_MAX
);
3167 /* PATH_MAX is bounded. */
3168 char *buf
= alloca (path_max
);
3169 char *rp
= realpath (filename
, buf
);
3171 return xstrdup (rp
? rp
: filename
);
3176 /* The MS Windows method. If we don't have realpath, we assume we
3177 don't have symlinks and just canonicalize to a Windows absolute
3178 path. GetFullPath converts ../ and ./ in relative paths to
3179 absolute paths, filling in current drive if one is not given
3180 or using the current directory of a specified drive (eg, "E:foo").
3181 It also converts all forward slashes to back slashes. */
3182 /* The file system is case-insensitive but case-preserving.
3183 So we do not lowercase the path. Otherwise, we might not
3184 be able to display the original casing in a given path. */
3185 #if defined (_WIN32)
3188 DWORD len
= GetFullPathName (filename
, MAX_PATH
, buf
, NULL
);
3190 if (len
> 0 && len
< MAX_PATH
)
3191 return xstrdup (buf
);
3195 /* This system is a lost cause, just dup the buffer. */
3196 return xstrdup (filename
);
3199 /* Return a copy of FILENAME, with its directory prefix canonicalized
3203 xfullpath (const char *filename
)
3205 const char *base_name
= lbasename (filename
);
3210 /* Extract the basename of filename, and return immediately
3211 a copy of filename if it does not contain any directory prefix. */
3212 if (base_name
== filename
)
3213 return xstrdup (filename
);
3215 dir_name
= alloca ((size_t) (base_name
- filename
+ 2));
3216 /* Allocate enough space to store the dir_name + plus one extra
3217 character sometimes needed under Windows (see below), and
3218 then the closing \000 character. */
3219 strncpy (dir_name
, filename
, base_name
- filename
);
3220 dir_name
[base_name
- filename
] = '\000';
3222 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
3223 /* We need to be careful when filename is of the form 'd:foo', which
3224 is equivalent of d:./foo, which is totally different from d:/foo. */
3225 if (strlen (dir_name
) == 2 && isalpha (dir_name
[0]) && dir_name
[1] == ':')
3228 dir_name
[3] = '\000';
3232 /* Canonicalize the directory prefix, and build the resulting
3233 filename. If the dirname realpath already contains an ending
3234 directory separator, avoid doubling it. */
3235 real_path
= gdb_realpath (dir_name
);
3236 if (IS_DIR_SEPARATOR (real_path
[strlen (real_path
) - 1]))
3237 result
= concat (real_path
, base_name
, (char *) NULL
);
3239 result
= concat (real_path
, SLASH_STRING
, base_name
, (char *) NULL
);
3246 /* This is the 32-bit CRC function used by the GNU separate debug
3247 facility. An executable may contain a section named
3248 .gnu_debuglink, which holds the name of a separate executable file
3249 containing its debug info, and a checksum of that file's contents,
3250 computed using this function. */
3252 gnu_debuglink_crc32 (unsigned long crc
, unsigned char *buf
, size_t len
)
3254 static const unsigned int crc32_table
[256] = {
3255 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419,
3256 0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4,
3257 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07,
3258 0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,
3259 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856,
3260 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
3261 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4,
3262 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
3263 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3,
3264 0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a,
3265 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599,
3266 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
3267 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190,
3268 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f,
3269 0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e,
3270 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
3271 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed,
3272 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
3273 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3,
3274 0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2,
3275 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a,
3276 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5,
3277 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010,
3278 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
3279 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17,
3280 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6,
3281 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615,
3282 0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,
3283 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344,
3284 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
3285 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a,
3286 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
3287 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1,
3288 0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c,
3289 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef,
3290 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
3291 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe,
3292 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31,
3293 0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c,
3294 0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
3295 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b,
3296 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
3297 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1,
3298 0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,
3299 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278,
3300 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7,
3301 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66,
3302 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
3303 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605,
3304 0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8,
3305 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b,
3310 crc
= ~crc
& 0xffffffff;
3311 for (end
= buf
+ len
; buf
< end
; ++buf
)
3312 crc
= crc32_table
[(crc
^ *buf
) & 0xff] ^ (crc
>> 8);
3313 return ~crc
& 0xffffffff;
3317 align_up (ULONGEST v
, int n
)
3319 /* Check that N is really a power of two. */
3320 gdb_assert (n
&& (n
& (n
-1)) == 0);
3321 return (v
+ n
- 1) & -n
;
3325 align_down (ULONGEST v
, int n
)
3327 /* Check that N is really a power of two. */
3328 gdb_assert (n
&& (n
& (n
-1)) == 0);
3332 /* Allocation function for the libiberty hash table which uses an
3333 obstack. The obstack is passed as DATA. */
3336 hashtab_obstack_allocate (void *data
, size_t size
, size_t count
)
3338 unsigned int total
= size
* count
;
3339 void *ptr
= obstack_alloc ((struct obstack
*) data
, total
);
3341 memset (ptr
, 0, total
);
3345 /* Trivial deallocation function for the libiberty splay tree and hash
3346 table - don't deallocate anything. Rely on later deletion of the
3347 obstack. DATA will be the obstack, although it is not needed
3351 dummy_obstack_deallocate (void *object
, void *data
)
3356 /* The bit offset of the highest byte in a ULONGEST, for overflow
3359 #define HIGH_BYTE_POSN ((sizeof (ULONGEST) - 1) * HOST_CHAR_BIT)
3361 /* True (non-zero) iff DIGIT is a valid digit in radix BASE,
3362 where 2 <= BASE <= 36. */
3365 is_digit_in_base (unsigned char digit
, int base
)
3367 if (!isalnum (digit
))
3370 return (isdigit (digit
) && digit
< base
+ '0');
3372 return (isdigit (digit
) || tolower (digit
) < base
- 10 + 'a');
3376 digit_to_int (unsigned char c
)
3381 return tolower (c
) - 'a' + 10;
3384 /* As for strtoul, but for ULONGEST results. */
3387 strtoulst (const char *num
, const char **trailer
, int base
)
3389 unsigned int high_part
;
3394 /* Skip leading whitespace. */
3395 while (isspace (num
[i
]))
3398 /* Handle prefixes. */
3401 else if (num
[i
] == '-')
3407 if (base
== 0 || base
== 16)
3409 if (num
[i
] == '0' && (num
[i
+ 1] == 'x' || num
[i
+ 1] == 'X'))
3417 if (base
== 0 && num
[i
] == '0')
3423 if (base
< 2 || base
> 36)
3429 result
= high_part
= 0;
3430 for (; is_digit_in_base (num
[i
], base
); i
+= 1)
3432 result
= result
* base
+ digit_to_int (num
[i
]);
3433 high_part
= high_part
* base
+ (unsigned int) (result
>> HIGH_BYTE_POSN
);
3434 result
&= ((ULONGEST
) 1 << HIGH_BYTE_POSN
) - 1;
3435 if (high_part
> 0xff)
3438 result
= ~ (ULONGEST
) 0;
3445 if (trailer
!= NULL
)
3448 result
= result
+ ((ULONGEST
) high_part
<< HIGH_BYTE_POSN
);
3455 /* Simple, portable version of dirname that does not modify its
3459 ldirname (const char *filename
)
3461 const char *base
= lbasename (filename
);
3464 while (base
> filename
&& IS_DIR_SEPARATOR (base
[-1]))
3467 if (base
== filename
)
3470 dirname
= xmalloc (base
- filename
+ 2);
3471 memcpy (dirname
, filename
, base
- filename
);
3473 /* On DOS based file systems, convert "d:foo" to "d:.", so that we
3474 create "d:./bar" later instead of the (different) "d:/bar". */
3475 if (base
- filename
== 2 && IS_ABSOLUTE_PATH (base
)
3476 && !IS_DIR_SEPARATOR (filename
[0]))
3477 dirname
[base
++ - filename
] = '.';
3479 dirname
[base
- filename
] = '\0';
3483 /* Call libiberty's buildargv, and return the result.
3484 If buildargv fails due to out-of-memory, call nomem.
3485 Therefore, the returned value is guaranteed to be non-NULL,
3486 unless the parameter itself is NULL. */
3489 gdb_buildargv (const char *s
)
3491 char **argv
= buildargv (s
);
3493 if (s
!= NULL
&& argv
== NULL
)
3499 compare_positive_ints (const void *ap
, const void *bp
)
3501 /* Because we know we're comparing two ints which are positive,
3502 there's no danger of overflow here. */
3503 return * (int *) ap
- * (int *) bp
;
3506 /* String compare function for qsort. */
3509 compare_strings (const void *arg1
, const void *arg2
)
3511 const char **s1
= (const char **) arg1
;
3512 const char **s2
= (const char **) arg2
;
3514 return strcmp (*s1
, *s2
);
3517 #define AMBIGUOUS_MESS1 ".\nMatching formats:"
3518 #define AMBIGUOUS_MESS2 \
3519 ".\nUse \"set gnutarget format-name\" to specify the format."
3522 gdb_bfd_errmsg (bfd_error_type error_tag
, char **matching
)
3528 /* Check if errmsg just need simple return. */
3529 if (error_tag
!= bfd_error_file_ambiguously_recognized
|| matching
== NULL
)
3530 return bfd_errmsg (error_tag
);
3532 ret_len
= strlen (bfd_errmsg (error_tag
)) + strlen (AMBIGUOUS_MESS1
)
3533 + strlen (AMBIGUOUS_MESS2
);
3534 for (p
= matching
; *p
; p
++)
3535 ret_len
+= strlen (*p
) + 1;
3536 ret
= xmalloc (ret_len
+ 1);
3538 make_cleanup (xfree
, ret
);
3540 strcpy (retp
, bfd_errmsg (error_tag
));
3541 retp
+= strlen (retp
);
3543 strcpy (retp
, AMBIGUOUS_MESS1
);
3544 retp
+= strlen (retp
);
3546 for (p
= matching
; *p
; p
++)
3548 sprintf (retp
, " %s", *p
);
3549 retp
+= strlen (retp
);
3553 strcpy (retp
, AMBIGUOUS_MESS2
);
3558 /* Return ARGS parsed as a valid pid, or throw an error. */
3561 parse_pid_to_attach (char *args
)
3567 error_no_arg (_("process-id to attach"));
3570 pid
= strtoul (args
, &dummy
, 0);
3571 /* Some targets don't set errno on errors, grrr! */
3572 if ((pid
== 0 && dummy
== args
) || dummy
!= &args
[strlen (args
)])
3573 error (_("Illegal process-id: %s."), args
);
3578 /* Helper for make_bpstat_clear_actions_cleanup. */
3581 do_bpstat_clear_actions_cleanup (void *unused
)
3583 bpstat_clear_actions ();
3586 /* Call bpstat_clear_actions for the case an exception is throw. You should
3587 discard_cleanups if no exception is caught. */
3590 make_bpstat_clear_actions_cleanup (void)
3592 return make_cleanup (do_bpstat_clear_actions_cleanup
, NULL
);
3595 /* Check for GCC >= 4.x according to the symtab->producer string. Return minor
3596 version (x) of 4.x in such case. If it is not GCC or it is GCC older than
3597 4.x return -1. If it is GCC 5.x or higher return INT_MAX. */
3600 producer_is_gcc_ge_4 (const char *producer
)
3605 if (producer
== NULL
)
3607 /* For unknown compilers expect their behavior is not compliant. For GCC
3608 this case can also happen for -gdwarf-4 type units supported since
3614 /* Skip any identifier after "GNU " - such as "C++" or "Java". */
3616 if (strncmp (producer
, "GNU ", strlen ("GNU ")) != 0)
3618 /* For non-GCC compilers expect their behavior is not compliant. */
3622 cs
= &producer
[strlen ("GNU ")];
3623 while (*cs
&& !isdigit (*cs
))
3625 if (sscanf (cs
, "%d.%d", &major
, &minor
) != 2)
3627 /* Not recognized as GCC. */
3639 /* Call xfree for each element of CHAR_PTR_VEC and final VEC_free for
3640 CHAR_PTR_VEC itself.
3642 You must not modify CHAR_PTR_VEC after it got registered with this function
3643 by make_cleanup as the CHAR_PTR_VEC base address may change on its updates.
3644 Contrary to VEC_free this function does not (cannot) clear the pointer. */
3647 free_char_ptr_vec (VEC (char_ptr
) *char_ptr_vec
)
3652 for (ix
= 0; VEC_iterate (char_ptr
, char_ptr_vec
, ix
, name
); ++ix
)
3654 VEC_free (char_ptr
, char_ptr_vec
);
3657 /* Helper for make_cleanup_free_char_ptr_vec. */
3660 do_free_char_ptr_vec (void *arg
)
3662 VEC (char_ptr
) *char_ptr_vec
= arg
;
3664 free_char_ptr_vec (char_ptr_vec
);
3667 /* Make cleanup handler calling xfree for each element of CHAR_PTR_VEC and
3668 final VEC_free for CHAR_PTR_VEC itself.
3670 You must not modify CHAR_PTR_VEC after this cleanup registration as the
3671 CHAR_PTR_VEC base address may change on its updates. Contrary to VEC_free
3672 this function does not (cannot) clear the pointer. */
3675 make_cleanup_free_char_ptr_vec (VEC (char_ptr
) *char_ptr_vec
)
3677 return make_cleanup (do_free_char_ptr_vec
, char_ptr_vec
);
3680 /* Extended version of dirnames_to_char_ptr_vec - additionally if *VECP is
3681 non-NULL the new list elements from DIRNAMES are appended to the existing
3682 *VECP list of entries. *VECP address will be updated by this call. */
3685 dirnames_to_char_ptr_vec_append (VEC (char_ptr
) **vecp
, const char *dirnames
)
3690 char *next_dir
, *this_dir
;
3692 next_dir
= strchr (dirnames
, DIRNAME_SEPARATOR
);
3693 if (next_dir
== NULL
)
3694 this_len
= strlen (dirnames
);
3697 this_len
= next_dir
- dirnames
;
3701 this_dir
= xmalloc (this_len
+ 1);
3702 memcpy (this_dir
, dirnames
, this_len
);
3703 this_dir
[this_len
] = '\0';
3704 VEC_safe_push (char_ptr
, *vecp
, this_dir
);
3706 dirnames
= next_dir
;
3708 while (dirnames
!= NULL
);
3711 /* Split DIRNAMES by DIRNAME_SEPARATOR delimiter and return a list of all the
3712 elements in their original order. For empty string ("") DIRNAMES return
3713 list of one empty string ("") element.
3715 You may modify the returned strings.
3716 Read free_char_ptr_vec for its cleanup. */
3719 dirnames_to_char_ptr_vec (const char *dirnames
)
3721 VEC (char_ptr
) *retval
= NULL
;
3723 dirnames_to_char_ptr_vec_append (&retval
, dirnames
);
3728 /* Substitute all occurences of string FROM by string TO in *STRINGP. *STRINGP
3729 must come from xrealloc-compatible allocator and it may be updated. FROM
3730 needs to be delimited by IS_DIR_SEPARATOR or DIRNAME_SEPARATOR (or be
3731 located at the start or end of *STRINGP. */
3734 substitute_path_component (char **stringp
, const char *from
, const char *to
)
3736 char *string
= *stringp
, *s
;
3737 const size_t from_len
= strlen (from
);
3738 const size_t to_len
= strlen (to
);
3742 s
= strstr (s
, from
);
3746 if ((s
== string
|| IS_DIR_SEPARATOR (s
[-1])
3747 || s
[-1] == DIRNAME_SEPARATOR
)
3748 && (s
[from_len
] == '\0' || IS_DIR_SEPARATOR (s
[from_len
])
3749 || s
[from_len
] == DIRNAME_SEPARATOR
))
3753 string_new
= xrealloc (string
, (strlen (string
) + to_len
+ 1));
3755 /* Relocate the current S pointer. */
3756 s
= s
- string
+ string_new
;
3757 string
= string_new
;
3759 /* Replace from by to. */
3760 memmove (&s
[to_len
], &s
[from_len
], strlen (&s
[from_len
]) + 1);
3761 memcpy (s
, to
, to_len
);
3776 /* SIGALRM handler for waitpid_with_timeout. */
3779 sigalrm_handler (int signo
)
3781 /* Nothing to do. */
3786 /* Wrapper to wait for child PID to die with TIMEOUT.
3787 TIMEOUT is the time to stop waiting in seconds.
3788 If TIMEOUT is zero, pass WNOHANG to waitpid.
3789 Returns PID if it was successfully waited for, otherwise -1.
3791 Timeouts are currently implemented with alarm and SIGALRM.
3792 If the host does not support them, this waits "forever".
3793 It would be odd though for a host to have waitpid and not SIGALRM. */
3796 wait_to_die_with_timeout (pid_t pid
, int *status
, int timeout
)
3798 pid_t waitpid_result
;
3800 gdb_assert (pid
> 0);
3801 gdb_assert (timeout
>= 0);
3806 #if defined (HAVE_SIGACTION) && defined (SA_RESTART)
3807 struct sigaction sa
, old_sa
;
3809 sa
.sa_handler
= sigalrm_handler
;
3810 sigemptyset (&sa
.sa_mask
);
3812 sigaction (SIGALRM
, &sa
, &old_sa
);
3816 ofunc
= (void (*)()) signal (SIGALRM
, sigalrm_handler
);
3822 waitpid_result
= waitpid (pid
, status
, 0);
3826 #if defined (HAVE_SIGACTION) && defined (SA_RESTART)
3827 sigaction (SIGALRM
, &old_sa
, NULL
);
3829 signal (SIGALRM
, ofunc
);
3834 waitpid_result
= waitpid (pid
, status
, WNOHANG
);
3836 if (waitpid_result
== pid
)
3842 #endif /* HAVE_WAITPID */
3844 /* Provide fnmatch compatible function for FNM_FILE_NAME matching of host files.
3845 Both FNM_FILE_NAME and FNM_NOESCAPE must be set in FLAGS.
3847 It handles correctly HAVE_DOS_BASED_FILE_SYSTEM and
3848 HAVE_CASE_INSENSITIVE_FILE_SYSTEM. */
3851 gdb_filename_fnmatch (const char *pattern
, const char *string
, int flags
)
3853 gdb_assert ((flags
& FNM_FILE_NAME
) != 0);
3855 /* It is unclear how '\' escaping vs. directory separator should coexist. */
3856 gdb_assert ((flags
& FNM_NOESCAPE
) != 0);
3858 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
3860 char *pattern_slash
, *string_slash
;
3862 /* Replace '\' by '/' in both strings. */
3864 pattern_slash
= alloca (strlen (pattern
) + 1);
3865 strcpy (pattern_slash
, pattern
);
3866 pattern
= pattern_slash
;
3867 for (; *pattern_slash
!= 0; pattern_slash
++)
3868 if (IS_DIR_SEPARATOR (*pattern_slash
))
3869 *pattern_slash
= '/';
3871 string_slash
= alloca (strlen (string
) + 1);
3872 strcpy (string_slash
, string
);
3873 string
= string_slash
;
3874 for (; *string_slash
!= 0; string_slash
++)
3875 if (IS_DIR_SEPARATOR (*string_slash
))
3876 *string_slash
= '/';
3878 #endif /* HAVE_DOS_BASED_FILE_SYSTEM */
3880 #ifdef HAVE_CASE_INSENSITIVE_FILE_SYSTEM
3881 flags
|= FNM_CASEFOLD
;
3882 #endif /* HAVE_CASE_INSENSITIVE_FILE_SYSTEM */
3884 return fnmatch (pattern
, string
, flags
);
3887 /* Provide a prototype to silence -Wmissing-prototypes. */
3888 extern initialize_file_ftype _initialize_utils
;
3891 _initialize_utils (void)
3893 add_internal_problem_command (&internal_error_problem
);
3894 add_internal_problem_command (&internal_warning_problem
);