1 /* General utility routines for GDB, the GNU debugger.
3 Copyright (C) 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
4 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005 Free
5 Software Foundation, Inc.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 51 Franklin Street, Fifth Floor,
22 Boston, MA 02110-1301, USA. */
25 #include "gdb_assert.h"
27 #include "gdb_string.h"
28 #include "event-top.h"
29 #include "exceptions.h"
32 #include "tui/tui.h" /* For tui_get_command_dimension. */
39 /* SunOS's curses.h has a '#define reg register' in it. Thank you Sun. */
50 #include "expression.h"
54 #include "filenames.h"
56 #include "gdb_obstack.h"
58 #include "inferior.h" /* for signed_pointer_to_address */
60 #include <sys/param.h> /* For MAXPATHLEN */
62 #include "gdb_curses.h"
64 #include "readline/readline.h"
67 extern PTR
malloc (); /* OK: PTR */
69 #if !HAVE_DECL_REALLOC
70 extern PTR
realloc (); /* OK: PTR */
76 /* readline defines this. */
79 void (*deprecated_error_begin_hook
) (void);
81 /* Prototypes for local functions */
83 static void vfprintf_maybe_filtered (struct ui_file
*, const char *,
84 va_list, int) ATTR_FORMAT (printf
, 2, 0);
86 static void fputs_maybe_filtered (const char *, struct ui_file
*, int);
88 static void do_my_cleanups (struct cleanup
**, struct cleanup
*);
90 static void prompt_for_continue (void);
92 static void set_screen_size (void);
93 static void set_width (void);
95 /* Chain of cleanup actions established with make_cleanup,
96 to be executed if an error happens. */
98 static struct cleanup
*cleanup_chain
; /* cleaned up after a failed command */
99 static struct cleanup
*final_cleanup_chain
; /* cleaned up when gdb exits */
100 static struct cleanup
*run_cleanup_chain
; /* cleaned up on each 'run' */
101 static struct cleanup
*exec_cleanup_chain
; /* cleaned up on each execution command */
102 /* cleaned up on each error from within an execution command */
103 static struct cleanup
*exec_error_cleanup_chain
;
105 /* Pointer to what is left to do for an execution command after the
106 target stops. Used only in asynchronous mode, by targets that
107 support async execution. The finish and until commands use it. So
108 does the target extended-remote command. */
109 struct continuation
*cmd_continuation
;
110 struct continuation
*intermediate_continuation
;
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 encoded C++/ObjC names should be printed out in their
134 C++/ObjC form rather than raw. */
138 show_demangle (struct ui_file
*file
, int from_tty
,
139 struct cmd_list_element
*c
, const char *value
)
141 fprintf_filtered (file
, _("\
142 Demangling of encoded C++/ObjC names when displaying symbols is %s.\n"),
146 /* Nonzero means that encoded C++/ObjC names should be printed out in their
147 C++/ObjC form even in assembler language displays. If this is set, but
148 DEMANGLE is zero, names are printed raw, i.e. DEMANGLE controls. */
150 int asm_demangle
= 0;
152 show_asm_demangle (struct ui_file
*file
, int from_tty
,
153 struct cmd_list_element
*c
, const char *value
)
155 fprintf_filtered (file
, _("\
156 Demangling of C++/ObjC names in disassembly listings is %s.\n"),
160 /* Nonzero means that strings with character values >0x7F should be printed
161 as octal escapes. Zero means just print the value (e.g. it's an
162 international character, and the terminal or window can cope.) */
164 int sevenbit_strings
= 0;
166 show_sevenbit_strings (struct ui_file
*file
, int from_tty
,
167 struct cmd_list_element
*c
, const char *value
)
169 fprintf_filtered (file
, _("\
170 Printing of 8-bit characters in strings as \\nnn is %s.\n"),
174 /* String to be printed before error messages, if any. */
176 char *error_pre_print
;
178 /* String to be printed before quit messages, if any. */
180 char *quit_pre_print
;
182 /* String to be printed before warning messages, if any. */
184 char *warning_pre_print
= "\nwarning: ";
186 int pagination_enabled
= 1;
188 show_pagination_enabled (struct ui_file
*file
, int from_tty
,
189 struct cmd_list_element
*c
, const char *value
)
191 fprintf_filtered (file
, _("State of pagination is %s.\n"), value
);
196 /* Add a new cleanup to the cleanup_chain,
197 and return the previous chain pointer
198 to be passed later to do_cleanups or discard_cleanups.
199 Args are FUNCTION to clean up with, and ARG to pass to it. */
202 make_cleanup (make_cleanup_ftype
*function
, void *arg
)
204 return make_my_cleanup (&cleanup_chain
, function
, arg
);
208 make_final_cleanup (make_cleanup_ftype
*function
, void *arg
)
210 return make_my_cleanup (&final_cleanup_chain
, function
, arg
);
214 make_run_cleanup (make_cleanup_ftype
*function
, void *arg
)
216 return make_my_cleanup (&run_cleanup_chain
, function
, arg
);
220 make_exec_cleanup (make_cleanup_ftype
*function
, void *arg
)
222 return make_my_cleanup (&exec_cleanup_chain
, function
, arg
);
226 make_exec_error_cleanup (make_cleanup_ftype
*function
, void *arg
)
228 return make_my_cleanup (&exec_error_cleanup_chain
, function
, arg
);
232 do_freeargv (void *arg
)
234 freeargv ((char **) arg
);
238 make_cleanup_freeargv (char **arg
)
240 return make_my_cleanup (&cleanup_chain
, do_freeargv
, arg
);
244 do_bfd_close_cleanup (void *arg
)
250 make_cleanup_bfd_close (bfd
*abfd
)
252 return make_cleanup (do_bfd_close_cleanup
, abfd
);
256 do_close_cleanup (void *arg
)
264 make_cleanup_close (int fd
)
266 int *saved_fd
= xmalloc (sizeof (fd
));
268 return make_cleanup (do_close_cleanup
, saved_fd
);
272 do_ui_file_delete (void *arg
)
274 ui_file_delete (arg
);
278 make_cleanup_ui_file_delete (struct ui_file
*arg
)
280 return make_my_cleanup (&cleanup_chain
, do_ui_file_delete
, arg
);
284 do_free_section_addr_info (void *arg
)
286 free_section_addr_info (arg
);
290 make_cleanup_free_section_addr_info (struct section_addr_info
*addrs
)
292 return make_my_cleanup (&cleanup_chain
, do_free_section_addr_info
, addrs
);
297 make_my_cleanup (struct cleanup
**pmy_chain
, make_cleanup_ftype
*function
,
301 = (struct cleanup
*) xmalloc (sizeof (struct cleanup
));
302 struct cleanup
*old_chain
= *pmy_chain
;
304 new->next
= *pmy_chain
;
305 new->function
= function
;
312 /* Discard cleanups and do the actions they describe
313 until we get back to the point OLD_CHAIN in the cleanup_chain. */
316 do_cleanups (struct cleanup
*old_chain
)
318 do_my_cleanups (&cleanup_chain
, old_chain
);
322 do_final_cleanups (struct cleanup
*old_chain
)
324 do_my_cleanups (&final_cleanup_chain
, old_chain
);
328 do_run_cleanups (struct cleanup
*old_chain
)
330 do_my_cleanups (&run_cleanup_chain
, old_chain
);
334 do_exec_cleanups (struct cleanup
*old_chain
)
336 do_my_cleanups (&exec_cleanup_chain
, old_chain
);
340 do_exec_error_cleanups (struct cleanup
*old_chain
)
342 do_my_cleanups (&exec_error_cleanup_chain
, old_chain
);
346 do_my_cleanups (struct cleanup
**pmy_chain
,
347 struct cleanup
*old_chain
)
350 while ((ptr
= *pmy_chain
) != old_chain
)
352 *pmy_chain
= ptr
->next
; /* Do this first incase recursion */
353 (*ptr
->function
) (ptr
->arg
);
358 /* Discard cleanups, not doing the actions they describe,
359 until we get back to the point OLD_CHAIN in the cleanup_chain. */
362 discard_cleanups (struct cleanup
*old_chain
)
364 discard_my_cleanups (&cleanup_chain
, old_chain
);
368 discard_final_cleanups (struct cleanup
*old_chain
)
370 discard_my_cleanups (&final_cleanup_chain
, old_chain
);
374 discard_exec_error_cleanups (struct cleanup
*old_chain
)
376 discard_my_cleanups (&exec_error_cleanup_chain
, old_chain
);
380 discard_my_cleanups (struct cleanup
**pmy_chain
,
381 struct cleanup
*old_chain
)
384 while ((ptr
= *pmy_chain
) != old_chain
)
386 *pmy_chain
= ptr
->next
;
391 /* Set the cleanup_chain to 0, and return the old cleanup chain. */
395 return save_my_cleanups (&cleanup_chain
);
399 save_final_cleanups (void)
401 return save_my_cleanups (&final_cleanup_chain
);
405 save_my_cleanups (struct cleanup
**pmy_chain
)
407 struct cleanup
*old_chain
= *pmy_chain
;
413 /* Restore the cleanup chain from a previously saved chain. */
415 restore_cleanups (struct cleanup
*chain
)
417 restore_my_cleanups (&cleanup_chain
, chain
);
421 restore_final_cleanups (struct cleanup
*chain
)
423 restore_my_cleanups (&final_cleanup_chain
, chain
);
427 restore_my_cleanups (struct cleanup
**pmy_chain
, struct cleanup
*chain
)
432 /* This function is useful for cleanups.
436 old_chain = make_cleanup (free_current_contents, &foo);
438 to arrange to free the object thus allocated. */
441 free_current_contents (void *ptr
)
443 void **location
= ptr
;
444 if (location
== NULL
)
445 internal_error (__FILE__
, __LINE__
,
446 _("free_current_contents: NULL pointer"));
447 if (*location
!= NULL
)
454 /* Provide a known function that does nothing, to use as a base for
455 for a possibly long chain of cleanups. This is useful where we
456 use the cleanup chain for handling normal cleanups as well as dealing
457 with cleanups that need to be done as a result of a call to error().
458 In such cases, we may not be certain where the first cleanup is, unless
459 we have a do-nothing one to always use as the base. */
462 null_cleanup (void *arg
)
466 /* Add a continuation to the continuation list, the global list
467 cmd_continuation. The new continuation will be added at the front.*/
469 add_continuation (void (*continuation_hook
) (struct continuation_arg
*),
470 struct continuation_arg
*arg_list
)
472 struct continuation
*continuation_ptr
;
475 (struct continuation
*) xmalloc (sizeof (struct continuation
));
476 continuation_ptr
->continuation_hook
= continuation_hook
;
477 continuation_ptr
->arg_list
= arg_list
;
478 continuation_ptr
->next
= cmd_continuation
;
479 cmd_continuation
= continuation_ptr
;
482 /* Walk down the cmd_continuation list, and execute all the
483 continuations. There is a problem though. In some cases new
484 continuations may be added while we are in the middle of this
485 loop. If this happens they will be added in the front, and done
486 before we have a chance of exhausting those that were already
487 there. We need to then save the beginning of the list in a pointer
488 and do the continuations from there on, instead of using the
489 global beginning of list as our iteration pointer. */
491 do_all_continuations (void)
493 struct continuation
*continuation_ptr
;
494 struct continuation
*saved_continuation
;
496 /* Copy the list header into another pointer, and set the global
497 list header to null, so that the global list can change as a side
498 effect of invoking the continuations and the processing of
499 the preexisting continuations will not be affected. */
500 continuation_ptr
= cmd_continuation
;
501 cmd_continuation
= NULL
;
503 /* Work now on the list we have set aside. */
504 while (continuation_ptr
)
506 (continuation_ptr
->continuation_hook
) (continuation_ptr
->arg_list
);
507 saved_continuation
= continuation_ptr
;
508 continuation_ptr
= continuation_ptr
->next
;
509 xfree (saved_continuation
);
513 /* Walk down the cmd_continuation list, and get rid of all the
516 discard_all_continuations (void)
518 struct continuation
*continuation_ptr
;
520 while (cmd_continuation
)
522 continuation_ptr
= cmd_continuation
;
523 cmd_continuation
= continuation_ptr
->next
;
524 xfree (continuation_ptr
);
528 /* Add a continuation to the continuation list, the global list
529 intermediate_continuation. The new continuation will be added at
532 add_intermediate_continuation (void (*continuation_hook
)
533 (struct continuation_arg
*),
534 struct continuation_arg
*arg_list
)
536 struct continuation
*continuation_ptr
;
539 (struct continuation
*) xmalloc (sizeof (struct continuation
));
540 continuation_ptr
->continuation_hook
= continuation_hook
;
541 continuation_ptr
->arg_list
= arg_list
;
542 continuation_ptr
->next
= intermediate_continuation
;
543 intermediate_continuation
= continuation_ptr
;
546 /* Walk down the cmd_continuation list, and execute all the
547 continuations. There is a problem though. In some cases new
548 continuations may be added while we are in the middle of this
549 loop. If this happens they will be added in the front, and done
550 before we have a chance of exhausting those that were already
551 there. We need to then save the beginning of the list in a pointer
552 and do the continuations from there on, instead of using the
553 global beginning of list as our iteration pointer.*/
555 do_all_intermediate_continuations (void)
557 struct continuation
*continuation_ptr
;
558 struct continuation
*saved_continuation
;
560 /* Copy the list header into another pointer, and set the global
561 list header to null, so that the global list can change as a side
562 effect of invoking the continuations and the processing of
563 the preexisting continuations will not be affected. */
564 continuation_ptr
= intermediate_continuation
;
565 intermediate_continuation
= NULL
;
567 /* Work now on the list we have set aside. */
568 while (continuation_ptr
)
570 (continuation_ptr
->continuation_hook
) (continuation_ptr
->arg_list
);
571 saved_continuation
= continuation_ptr
;
572 continuation_ptr
= continuation_ptr
->next
;
573 xfree (saved_continuation
);
577 /* Walk down the cmd_continuation list, and get rid of all the
580 discard_all_intermediate_continuations (void)
582 struct continuation
*continuation_ptr
;
584 while (intermediate_continuation
)
586 continuation_ptr
= intermediate_continuation
;
587 intermediate_continuation
= continuation_ptr
->next
;
588 xfree (continuation_ptr
);
594 /* Print a warning message. The first argument STRING is the warning
595 message, used as an fprintf format string, the second is the
596 va_list of arguments for that string. A warning is unfiltered (not
597 paginated) so that the user does not need to page through each
598 screen full of warnings when there are lots of them. */
601 vwarning (const char *string
, va_list args
)
603 if (deprecated_warning_hook
)
604 (*deprecated_warning_hook
) (string
, args
);
607 target_terminal_ours ();
608 wrap_here (""); /* Force out any buffered output */
609 gdb_flush (gdb_stdout
);
610 if (warning_pre_print
)
611 fputs_unfiltered (warning_pre_print
, gdb_stderr
);
612 vfprintf_unfiltered (gdb_stderr
, string
, args
);
613 fprintf_unfiltered (gdb_stderr
, "\n");
618 /* Print a warning message.
619 The first argument STRING is the warning message, used as a fprintf string,
620 and the remaining args are passed as arguments to it.
621 The primary difference between warnings and errors is that a warning
622 does not force the return to command level. */
625 warning (const char *string
, ...)
628 va_start (args
, string
);
629 vwarning (string
, args
);
633 /* Print an error message and return to command level.
634 The first argument STRING is the error message, used as a fprintf string,
635 and the remaining args are passed as arguments to it. */
638 verror (const char *string
, va_list args
)
640 throw_verror (GENERIC_ERROR
, string
, args
);
644 error (const char *string
, ...)
647 va_start (args
, string
);
648 throw_verror (GENERIC_ERROR
, string
, args
);
652 /* Print an error message and quit.
653 The first argument STRING is the error message, used as a fprintf string,
654 and the remaining args are passed as arguments to it. */
657 vfatal (const char *string
, va_list args
)
659 throw_vfatal (string
, args
);
663 fatal (const char *string
, ...)
666 va_start (args
, string
);
667 throw_vfatal (string
, args
);
672 error_stream (struct ui_file
*stream
)
675 char *message
= ui_file_xstrdup (stream
, &len
);
676 make_cleanup (xfree
, message
);
677 error (("%s"), message
);
680 /* Print a message reporting an internal error/warning. Ask the user
681 if they want to continue, dump core, or just exit. Return
682 something to indicate a quit. */
684 struct internal_problem
687 /* FIXME: cagney/2002-08-15: There should be ``maint set/show''
688 commands available for controlling these variables. */
689 enum auto_boolean should_quit
;
690 enum auto_boolean should_dump_core
;
693 /* Report a problem, internal to GDB, to the user. Once the problem
694 has been reported, and assuming GDB didn't quit, the caller can
695 either allow execution to resume or throw an error. */
697 static void ATTR_FORMAT (printf
, 4, 0)
698 internal_vproblem (struct internal_problem
*problem
,
699 const char *file
, int line
, const char *fmt
, va_list ap
)
706 /* Don't allow infinite error/warning recursion. */
708 static char msg
[] = "Recursive internal problem.\n";
716 fputs_unfiltered (msg
, gdb_stderr
);
717 abort (); /* NOTE: GDB has only three calls to abort(). */
720 write (STDERR_FILENO
, msg
, sizeof (msg
));
725 /* Try to get the message out and at the start of a new line. */
726 target_terminal_ours ();
729 /* Create a string containing the full error/warning message. Need
730 to call query with this full string, as otherwize the reason
731 (error/warning) and question become separated. Format using a
732 style similar to a compiler error message. Include extra detail
733 so that the user knows that they are living on the edge. */
736 msg
= xstrvprintf (fmt
, ap
);
737 reason
= xstrprintf ("\
739 A problem internal to GDB has been detected,\n\
740 further debugging may prove unreliable.", file
, line
, problem
->name
, msg
);
742 make_cleanup (xfree
, reason
);
745 switch (problem
->should_quit
)
747 case AUTO_BOOLEAN_AUTO
:
748 /* Default (yes/batch case) is to quit GDB. When in batch mode
749 this lessens the likelhood of GDB going into an infinate
751 quit_p
= query (_("%s\nQuit this debugging session? "), reason
);
753 case AUTO_BOOLEAN_TRUE
:
756 case AUTO_BOOLEAN_FALSE
:
760 internal_error (__FILE__
, __LINE__
, _("bad switch"));
763 switch (problem
->should_dump_core
)
765 case AUTO_BOOLEAN_AUTO
:
766 /* Default (yes/batch case) is to dump core. This leaves a GDB
767 `dropping' so that it is easier to see that something went
769 dump_core_p
= query (_("%s\nCreate a core file of GDB? "), reason
);
772 case AUTO_BOOLEAN_TRUE
:
775 case AUTO_BOOLEAN_FALSE
:
779 internal_error (__FILE__
, __LINE__
, _("bad switch"));
785 abort (); /* NOTE: GDB has only three calls to abort(). */
793 #ifdef HAVE_WORKING_FORK
795 abort (); /* NOTE: GDB has only three calls to abort(). */
803 static struct internal_problem internal_error_problem
= {
804 "internal-error", AUTO_BOOLEAN_AUTO
, AUTO_BOOLEAN_AUTO
808 internal_verror (const char *file
, int line
, const char *fmt
, va_list ap
)
810 internal_vproblem (&internal_error_problem
, file
, line
, fmt
, ap
);
811 deprecated_throw_reason (RETURN_ERROR
);
815 internal_error (const char *file
, int line
, const char *string
, ...)
818 va_start (ap
, string
);
819 internal_verror (file
, line
, string
, ap
);
823 static struct internal_problem internal_warning_problem
= {
824 "internal-warning", AUTO_BOOLEAN_AUTO
, AUTO_BOOLEAN_AUTO
828 internal_vwarning (const char *file
, int line
, const char *fmt
, va_list ap
)
830 internal_vproblem (&internal_warning_problem
, file
, line
, fmt
, ap
);
834 internal_warning (const char *file
, int line
, const char *string
, ...)
837 va_start (ap
, string
);
838 internal_vwarning (file
, line
, string
, ap
);
842 /* The strerror() function can return NULL for errno values that are
843 out of range. Provide a "safe" version that always returns a
847 safe_strerror (int errnum
)
851 msg
= strerror (errnum
);
855 xsnprintf (buf
, sizeof buf
, "(undocumented errno %d)", errnum
);
861 /* Print the system error message for errno, and also mention STRING
862 as the file name for which the error was encountered.
863 Then return to command level. */
866 perror_with_name (const char *string
)
871 err
= safe_strerror (errno
);
872 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
873 strcpy (combined
, string
);
874 strcat (combined
, ": ");
875 strcat (combined
, err
);
877 /* I understand setting these is a matter of taste. Still, some people
878 may clear errno but not know about bfd_error. Doing this here is not
880 bfd_set_error (bfd_error_no_error
);
883 error (_("%s."), combined
);
886 /* Print the system error message for ERRCODE, and also mention STRING
887 as the file name for which the error was encountered. */
890 print_sys_errmsg (const char *string
, int errcode
)
895 err
= safe_strerror (errcode
);
896 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
897 strcpy (combined
, string
);
898 strcat (combined
, ": ");
899 strcat (combined
, err
);
901 /* We want anything which was printed on stdout to come out first, before
903 gdb_flush (gdb_stdout
);
904 fprintf_unfiltered (gdb_stderr
, "%s.\n", combined
);
907 /* Control C eventually causes this to be called, at a convenient time. */
913 /* No steenking SIGINT will ever be coming our way when the
914 program is resumed. Don't lie. */
918 /* If there is no terminal switching for this target, then we can't
919 possibly get screwed by the lack of job control. */
920 || current_target
.to_terminal_ours
== NULL
)
923 fatal ("Quit (expect signal SIGINT when the program is resumed)");
927 /* Control C comes here */
929 request_quit (int signo
)
932 /* Restore the signal handler. Harmless with BSD-style signals,
933 needed for System V-style signals. */
934 signal (signo
, request_quit
);
940 /* Called when a memory allocation fails, with the number of bytes of
941 memory requested in SIZE. */
948 internal_error (__FILE__
, __LINE__
,
949 _("virtual memory exhausted: can't allocate %ld bytes."),
954 internal_error (__FILE__
, __LINE__
, _("virtual memory exhausted."));
958 /* The xmalloc() (libiberty.h) family of memory management routines.
960 These are like the ISO-C malloc() family except that they implement
961 consistent semantics and guard against typical memory management
964 /* NOTE: These are declared using PTR to ensure consistency with
965 "libiberty.h". xfree() is GDB local. */
968 xmalloc (size_t size
)
972 /* See libiberty/xmalloc.c. This function need's to match that's
973 semantics. It never returns NULL. */
977 val
= malloc (size
); /* OK: malloc */
985 xzalloc (size_t size
)
987 return xcalloc (1, size
);
991 xrealloc (PTR ptr
, size_t size
) /* OK: PTR */
995 /* See libiberty/xmalloc.c. This function need's to match that's
996 semantics. It never returns NULL. */
1001 val
= realloc (ptr
, size
); /* OK: realloc */
1003 val
= malloc (size
); /* OK: malloc */
1011 xcalloc (size_t number
, size_t size
)
1015 /* See libiberty/xmalloc.c. This function need's to match that's
1016 semantics. It never returns NULL. */
1017 if (number
== 0 || size
== 0)
1023 mem
= calloc (number
, size
); /* OK: xcalloc */
1025 nomem (number
* size
);
1034 free (ptr
); /* OK: free */
1038 /* Like asprintf/vasprintf but get an internal_error if the call
1042 xstrprintf (const char *format
, ...)
1046 va_start (args
, format
);
1047 ret
= xstrvprintf (format
, args
);
1053 xasprintf (char **ret
, const char *format
, ...)
1056 va_start (args
, format
);
1057 (*ret
) = xstrvprintf (format
, args
);
1062 xvasprintf (char **ret
, const char *format
, va_list ap
)
1064 (*ret
) = xstrvprintf (format
, ap
);
1068 xstrvprintf (const char *format
, va_list ap
)
1071 int status
= vasprintf (&ret
, format
, ap
);
1072 /* NULL is returned when there was a memory allocation problem. */
1075 /* A negative status (the printed length) with a non-NULL buffer
1076 should never happen, but just to be sure. */
1078 internal_error (__FILE__
, __LINE__
,
1079 _("vasprintf call failed (errno %d)"), errno
);
1084 xsnprintf (char *str
, size_t size
, const char *format
, ...)
1089 va_start (args
, format
);
1090 ret
= vsnprintf (str
, size
, format
, args
);
1091 gdb_assert (ret
< size
);
1097 /* My replacement for the read system call.
1098 Used like `read' but keeps going if `read' returns too soon. */
1101 myread (int desc
, char *addr
, int len
)
1108 val
= read (desc
, addr
, len
);
1112 return orglen
- len
;
1119 /* Make a copy of the string at PTR with SIZE characters
1120 (and add a null character at the end in the copy).
1121 Uses malloc to get the space. Returns the address of the copy. */
1124 savestring (const char *ptr
, size_t size
)
1126 char *p
= (char *) xmalloc (size
+ 1);
1127 memcpy (p
, ptr
, size
);
1133 print_spaces (int n
, struct ui_file
*file
)
1135 fputs_unfiltered (n_spaces (n
), file
);
1138 /* Print a host address. */
1141 gdb_print_host_address (const void *addr
, struct ui_file
*stream
)
1144 /* We could use the %p conversion specifier to fprintf if we had any
1145 way of knowing whether this host supports it. But the following
1146 should work on the Alpha and on 32 bit machines. */
1148 fprintf_filtered (stream
, "0x%lx", (unsigned long) addr
);
1151 /* Ask user a y-or-n question and return 1 iff answer is yes.
1152 Takes three args which are given to printf to print the question.
1153 The first, a control string, should end in "? ".
1154 It should not say how to answer, because we do that. */
1158 query (const char *ctlstr
, ...)
1165 if (deprecated_query_hook
)
1167 va_start (args
, ctlstr
);
1168 return deprecated_query_hook (ctlstr
, args
);
1171 /* Automatically answer "yes" if input is not from a terminal. */
1172 if (!input_from_terminal_p ())
1177 wrap_here (""); /* Flush any buffered output */
1178 gdb_flush (gdb_stdout
);
1180 if (annotation_level
> 1)
1181 printf_filtered (("\n\032\032pre-query\n"));
1183 va_start (args
, ctlstr
);
1184 vfprintf_filtered (gdb_stdout
, ctlstr
, args
);
1186 printf_filtered (_("(y or n) "));
1188 if (annotation_level
> 1)
1189 printf_filtered (("\n\032\032query\n"));
1192 gdb_flush (gdb_stdout
);
1194 answer
= fgetc (stdin
);
1195 clearerr (stdin
); /* in case of C-d */
1196 if (answer
== EOF
) /* C-d */
1201 /* Eat rest of input line, to EOF or newline */
1205 ans2
= fgetc (stdin
);
1208 while (ans2
!= EOF
&& ans2
!= '\n' && ans2
!= '\r');
1222 printf_filtered (_("Please answer y or n.\n"));
1225 if (annotation_level
> 1)
1226 printf_filtered (("\n\032\032post-query\n"));
1231 /* This function supports the nquery() and yquery() functions.
1232 Ask user a y-or-n question and return 0 if answer is no, 1 if
1233 answer is yes, or default the answer to the specified default.
1234 DEFCHAR is either 'y' or 'n' and refers to the default answer.
1235 CTLSTR is the control string and should end in "? ". It should
1236 not say how to answer, because we do that.
1237 ARGS are the arguments passed along with the CTLSTR argument to
1240 static int ATTR_FORMAT (printf
, 1, 0)
1241 defaulted_query (const char *ctlstr
, const char defchar
, va_list args
)
1247 char def_answer
, not_def_answer
;
1248 char *y_string
, *n_string
;
1250 /* Set up according to which answer is the default. */
1255 not_def_answer
= 'N';
1263 not_def_answer
= 'Y';
1268 if (deprecated_query_hook
)
1270 return deprecated_query_hook (ctlstr
, args
);
1273 /* Automatically answer default value if input is not from a terminal. */
1274 if (!input_from_terminal_p ())
1279 wrap_here (""); /* Flush any buffered output */
1280 gdb_flush (gdb_stdout
);
1282 if (annotation_level
> 1)
1283 printf_filtered (("\n\032\032pre-query\n"));
1285 vfprintf_filtered (gdb_stdout
, ctlstr
, args
);
1286 printf_filtered (_("(%s or %s) "), y_string
, n_string
);
1288 if (annotation_level
> 1)
1289 printf_filtered (("\n\032\032query\n"));
1292 gdb_flush (gdb_stdout
);
1294 answer
= fgetc (stdin
);
1295 clearerr (stdin
); /* in case of C-d */
1296 if (answer
== EOF
) /* C-d */
1301 /* Eat rest of input line, to EOF or newline */
1305 ans2
= fgetc (stdin
);
1308 while (ans2
!= EOF
&& ans2
!= '\n' && ans2
!= '\r');
1312 /* Check answer. For the non-default, the user must specify
1313 the non-default explicitly. */
1314 if (answer
== not_def_answer
)
1316 retval
= !def_value
;
1319 /* Otherwise, for the default, the user may either specify
1320 the required input or have it default by entering nothing. */
1321 if (answer
== def_answer
|| answer
== '\n' ||
1322 answer
== '\r' || answer
== EOF
)
1327 /* Invalid entries are not defaulted and require another selection. */
1328 printf_filtered (_("Please answer %s or %s.\n"),
1329 y_string
, n_string
);
1332 if (annotation_level
> 1)
1333 printf_filtered (("\n\032\032post-query\n"));
1338 /* Ask user a y-or-n question and return 0 if answer is no, 1 if
1339 answer is yes, or 0 if answer is defaulted.
1340 Takes three args which are given to printf to print the question.
1341 The first, a control string, should end in "? ".
1342 It should not say how to answer, because we do that. */
1345 nquery (const char *ctlstr
, ...)
1349 va_start (args
, ctlstr
);
1350 return defaulted_query (ctlstr
, 'n', args
);
1354 /* Ask user a y-or-n question and return 0 if answer is no, 1 if
1355 answer is yes, or 1 if answer is defaulted.
1356 Takes three args which are given to printf to print the question.
1357 The first, a control string, should end in "? ".
1358 It should not say how to answer, because we do that. */
1361 yquery (const char *ctlstr
, ...)
1365 va_start (args
, ctlstr
);
1366 return defaulted_query (ctlstr
, 'y', args
);
1370 /* Print an error message saying that we couldn't make sense of a
1371 \^mumble sequence in a string or character constant. START and END
1372 indicate a substring of some larger string that contains the
1373 erroneous backslash sequence, missing the initial backslash. */
1375 no_control_char_error (const char *start
, const char *end
)
1377 int len
= end
- start
;
1378 char *copy
= alloca (end
- start
+ 1);
1380 memcpy (copy
, start
, len
);
1383 error (_("There is no control character `\\%s' in the `%s' character set."),
1384 copy
, target_charset ());
1387 /* Parse a C escape sequence. STRING_PTR points to a variable
1388 containing a pointer to the string to parse. That pointer
1389 should point to the character after the \. That pointer
1390 is updated past the characters we use. The value of the
1391 escape sequence is returned.
1393 A negative value means the sequence \ newline was seen,
1394 which is supposed to be equivalent to nothing at all.
1396 If \ is followed by a null character, we return a negative
1397 value and leave the string pointer pointing at the null character.
1399 If \ is followed by 000, we return 0 and leave the string pointer
1400 after the zeros. A value of 0 does not mean end of string. */
1403 parse_escape (char **string_ptr
)
1406 int c
= *(*string_ptr
)++;
1407 if (c_parse_backslash (c
, &target_char
))
1419 /* Remember where this escape sequence started, for reporting
1421 char *sequence_start_pos
= *string_ptr
- 1;
1423 c
= *(*string_ptr
)++;
1427 /* XXXCHARSET: What is `delete' in the host character set? */
1430 if (!host_char_to_target (c
, &target_char
))
1431 error (_("There is no character corresponding to `Delete' "
1432 "in the target character set `%s'."), host_charset ());
1437 target_char
= parse_escape (string_ptr
);
1440 if (!host_char_to_target (c
, &target_char
))
1441 no_control_char_error (sequence_start_pos
, *string_ptr
);
1444 /* Now target_char is something like `c', and we want to find
1445 its control-character equivalent. */
1446 if (!target_char_to_control_char (target_char
, &target_char
))
1447 no_control_char_error (sequence_start_pos
, *string_ptr
);
1452 /* XXXCHARSET: we need to use isdigit and value-of-digit
1453 methods of the host character set here. */
1469 if (c
>= '0' && c
<= '7')
1483 if (!host_char_to_target (c
, &target_char
))
1485 ("The escape sequence `\%c' is equivalent to plain `%c', which"
1486 " has no equivalent\n" "in the `%s' character set.", c
, c
,
1492 /* Print the character C on STREAM as part of the contents of a literal
1493 string whose delimiter is QUOTER. Note that this routine should only
1494 be call for printing things which are independent of the language
1495 of the program being debugged. */
1498 printchar (int c
, void (*do_fputs
) (const char *, struct ui_file
*),
1499 void (*do_fprintf
) (struct ui_file
*, const char *, ...)
1500 ATTRIBUTE_FPTR_PRINTF_2
, struct ui_file
*stream
, int quoter
)
1503 c
&= 0xFF; /* Avoid sign bit follies */
1505 if (c
< 0x20 || /* Low control chars */
1506 (c
>= 0x7F && c
< 0xA0) || /* DEL, High controls */
1507 (sevenbit_strings
&& c
>= 0x80))
1508 { /* high order bit set */
1512 do_fputs ("\\n", stream
);
1515 do_fputs ("\\b", stream
);
1518 do_fputs ("\\t", stream
);
1521 do_fputs ("\\f", stream
);
1524 do_fputs ("\\r", stream
);
1527 do_fputs ("\\e", stream
);
1530 do_fputs ("\\a", stream
);
1533 do_fprintf (stream
, "\\%.3o", (unsigned int) c
);
1539 if (c
== '\\' || c
== quoter
)
1540 do_fputs ("\\", stream
);
1541 do_fprintf (stream
, "%c", c
);
1545 /* Print the character C on STREAM as part of the contents of a
1546 literal string whose delimiter is QUOTER. Note that these routines
1547 should only be call for printing things which are independent of
1548 the language of the program being debugged. */
1551 fputstr_filtered (const char *str
, int quoter
, struct ui_file
*stream
)
1554 printchar (*str
++, fputs_filtered
, fprintf_filtered
, stream
, quoter
);
1558 fputstr_unfiltered (const char *str
, int quoter
, struct ui_file
*stream
)
1561 printchar (*str
++, fputs_unfiltered
, fprintf_unfiltered
, stream
, quoter
);
1565 fputstrn_unfiltered (const char *str
, int n
, int quoter
,
1566 struct ui_file
*stream
)
1569 for (i
= 0; i
< n
; i
++)
1570 printchar (str
[i
], fputs_unfiltered
, fprintf_unfiltered
, stream
, quoter
);
1574 /* Number of lines per page or UINT_MAX if paging is disabled. */
1575 static unsigned int lines_per_page
;
1577 show_lines_per_page (struct ui_file
*file
, int from_tty
,
1578 struct cmd_list_element
*c
, const char *value
)
1580 fprintf_filtered (file
, _("\
1581 Number of lines gdb thinks are in a page is %s.\n"),
1585 /* Number of chars per line or UINT_MAX if line folding is disabled. */
1586 static unsigned int chars_per_line
;
1588 show_chars_per_line (struct ui_file
*file
, int from_tty
,
1589 struct cmd_list_element
*c
, const char *value
)
1591 fprintf_filtered (file
, _("\
1592 Number of characters gdb thinks are in a line is %s.\n"),
1596 /* Current count of lines printed on this page, chars on this line. */
1597 static unsigned int lines_printed
, chars_printed
;
1599 /* Buffer and start column of buffered text, for doing smarter word-
1600 wrapping. When someone calls wrap_here(), we start buffering output
1601 that comes through fputs_filtered(). If we see a newline, we just
1602 spit it out and forget about the wrap_here(). If we see another
1603 wrap_here(), we spit it out and remember the newer one. If we see
1604 the end of the line, we spit out a newline, the indent, and then
1605 the buffered output. */
1607 /* Malloc'd buffer with chars_per_line+2 bytes. Contains characters which
1608 are waiting to be output (they have already been counted in chars_printed).
1609 When wrap_buffer[0] is null, the buffer is empty. */
1610 static char *wrap_buffer
;
1612 /* Pointer in wrap_buffer to the next character to fill. */
1613 static char *wrap_pointer
;
1615 /* String to indent by if the wrap occurs. Must not be NULL if wrap_column
1617 static char *wrap_indent
;
1619 /* Column number on the screen where wrap_buffer begins, or 0 if wrapping
1620 is not in effect. */
1621 static int wrap_column
;
1624 /* Inialize the number of lines per page and chars per line. */
1627 init_page_info (void)
1630 if (!tui_get_command_dimension (&chars_per_line
, &lines_per_page
))
1635 #if defined(__GO32__)
1636 rows
= ScreenRows ();
1637 cols
= ScreenCols ();
1638 lines_per_page
= rows
;
1639 chars_per_line
= cols
;
1641 /* Make sure Readline has initialized its terminal settings. */
1642 rl_reset_terminal (NULL
);
1644 /* Get the screen size from Readline. */
1645 rl_get_screen_size (&rows
, &cols
);
1646 lines_per_page
= rows
;
1647 chars_per_line
= cols
;
1649 /* Readline should have fetched the termcap entry for us. */
1650 if (tgetnum ("li") < 0 || getenv ("EMACS"))
1652 /* The number of lines per page is not mentioned in the
1653 terminal description. This probably means that paging is
1654 not useful (e.g. emacs shell window), so disable paging. */
1655 lines_per_page
= UINT_MAX
;
1658 /* FIXME: Get rid of this junk. */
1659 #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER)
1660 SIGWINCH_HANDLER (SIGWINCH
);
1663 /* If the output is not a terminal, don't paginate it. */
1664 if (!ui_file_isatty (gdb_stdout
))
1665 lines_per_page
= UINT_MAX
;
1673 /* Set the screen size based on LINES_PER_PAGE and CHARS_PER_LINE. */
1676 set_screen_size (void)
1678 int rows
= lines_per_page
;
1679 int cols
= chars_per_line
;
1685 rl_get_screen_size (NULL
, &cols
);
1687 /* Update Readline's idea of the terminal size. */
1688 rl_set_screen_size (rows
, cols
);
1691 /* Reinitialize WRAP_BUFFER according to the current value of
1697 if (chars_per_line
== 0)
1702 wrap_buffer
= (char *) xmalloc (chars_per_line
+ 2);
1703 wrap_buffer
[0] = '\0';
1706 wrap_buffer
= (char *) xrealloc (wrap_buffer
, chars_per_line
+ 2);
1707 wrap_pointer
= wrap_buffer
; /* Start it at the beginning. */
1711 set_width_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
1718 set_height_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
1723 /* Wait, so the user can read what's on the screen. Prompt the user
1724 to continue by pressing RETURN. */
1727 prompt_for_continue (void)
1730 char cont_prompt
[120];
1732 if (annotation_level
> 1)
1733 printf_unfiltered (("\n\032\032pre-prompt-for-continue\n"));
1735 strcpy (cont_prompt
,
1736 "---Type <return> to continue, or q <return> to quit---");
1737 if (annotation_level
> 1)
1738 strcat (cont_prompt
, "\n\032\032prompt-for-continue\n");
1740 /* We must do this *before* we call gdb_readline, else it will eventually
1741 call us -- thinking that we're trying to print beyond the end of the
1743 reinitialize_more_filter ();
1746 /* On a real operating system, the user can quit with SIGINT.
1749 'q' is provided on all systems so users don't have to change habits
1750 from system to system, and because telling them what to do in
1751 the prompt is more user-friendly than expecting them to think of
1753 /* Call readline, not gdb_readline, because GO32 readline handles control-C
1754 whereas control-C to gdb_readline will cause the user to get dumped
1756 ignore
= gdb_readline_wrapper (cont_prompt
);
1758 if (annotation_level
> 1)
1759 printf_unfiltered (("\n\032\032post-prompt-for-continue\n"));
1764 while (*p
== ' ' || *p
== '\t')
1767 async_request_quit (0);
1772 /* Now we have to do this again, so that GDB will know that it doesn't
1773 need to save the ---Type <return>--- line at the top of the screen. */
1774 reinitialize_more_filter ();
1776 dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */
1779 /* Reinitialize filter; ie. tell it to reset to original values. */
1782 reinitialize_more_filter (void)
1788 /* Indicate that if the next sequence of characters overflows the line,
1789 a newline should be inserted here rather than when it hits the end.
1790 If INDENT is non-null, it is a string to be printed to indent the
1791 wrapped part on the next line. INDENT must remain accessible until
1792 the next call to wrap_here() or until a newline is printed through
1795 If the line is already overfull, we immediately print a newline and
1796 the indentation, and disable further wrapping.
1798 If we don't know the width of lines, but we know the page height,
1799 we must not wrap words, but should still keep track of newlines
1800 that were explicitly printed.
1802 INDENT should not contain tabs, as that will mess up the char count
1803 on the next line. FIXME.
1805 This routine is guaranteed to force out any output which has been
1806 squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be
1807 used to force out output from the wrap_buffer. */
1810 wrap_here (char *indent
)
1812 /* This should have been allocated, but be paranoid anyway. */
1814 internal_error (__FILE__
, __LINE__
, _("failed internal consistency check"));
1818 *wrap_pointer
= '\0';
1819 fputs_unfiltered (wrap_buffer
, gdb_stdout
);
1821 wrap_pointer
= wrap_buffer
;
1822 wrap_buffer
[0] = '\0';
1823 if (chars_per_line
== UINT_MAX
) /* No line overflow checking */
1827 else if (chars_printed
>= chars_per_line
)
1829 puts_filtered ("\n");
1831 puts_filtered (indent
);
1836 wrap_column
= chars_printed
;
1840 wrap_indent
= indent
;
1844 /* Print input string to gdb_stdout, filtered, with wrap,
1845 arranging strings in columns of n chars. String can be
1846 right or left justified in the column. Never prints
1847 trailing spaces. String should never be longer than
1848 width. FIXME: this could be useful for the EXAMINE
1849 command, which currently doesn't tabulate very well */
1852 puts_filtered_tabular (char *string
, int width
, int right
)
1858 gdb_assert (chars_per_line
> 0);
1859 if (chars_per_line
== UINT_MAX
)
1861 fputs_filtered (string
, gdb_stdout
);
1862 fputs_filtered ("\n", gdb_stdout
);
1866 if (((chars_printed
- 1) / width
+ 2) * width
>= chars_per_line
)
1867 fputs_filtered ("\n", gdb_stdout
);
1869 if (width
>= chars_per_line
)
1870 width
= chars_per_line
- 1;
1872 stringlen
= strlen (string
);
1874 if (chars_printed
> 0)
1875 spaces
= width
- (chars_printed
- 1) % width
- 1;
1877 spaces
+= width
- stringlen
;
1879 spacebuf
= alloca (spaces
+ 1);
1880 spacebuf
[spaces
] = '\0';
1882 spacebuf
[spaces
] = ' ';
1884 fputs_filtered (spacebuf
, gdb_stdout
);
1885 fputs_filtered (string
, gdb_stdout
);
1889 /* Ensure that whatever gets printed next, using the filtered output
1890 commands, starts at the beginning of the line. I.E. if there is
1891 any pending output for the current line, flush it and start a new
1892 line. Otherwise do nothing. */
1897 if (chars_printed
> 0)
1899 puts_filtered ("\n");
1904 /* Like fputs but if FILTER is true, pause after every screenful.
1906 Regardless of FILTER can wrap at points other than the final
1907 character of a line.
1909 Unlike fputs, fputs_maybe_filtered does not return a value.
1910 It is OK for LINEBUFFER to be NULL, in which case just don't print
1913 Note that a longjmp to top level may occur in this routine (only if
1914 FILTER is true) (since prompt_for_continue may do so) so this
1915 routine should not be called when cleanups are not in place. */
1918 fputs_maybe_filtered (const char *linebuffer
, struct ui_file
*stream
,
1921 const char *lineptr
;
1923 if (linebuffer
== 0)
1926 /* Don't do any filtering if it is disabled. */
1927 if ((stream
!= gdb_stdout
) || !pagination_enabled
1928 || (lines_per_page
== UINT_MAX
&& chars_per_line
== UINT_MAX
))
1930 fputs_unfiltered (linebuffer
, stream
);
1934 /* Go through and output each character. Show line extension
1935 when this is necessary; prompt user for new page when this is
1938 lineptr
= linebuffer
;
1941 /* Possible new page. */
1942 if (filter
&& (lines_printed
>= lines_per_page
- 1))
1943 prompt_for_continue ();
1945 while (*lineptr
&& *lineptr
!= '\n')
1947 /* Print a single line. */
1948 if (*lineptr
== '\t')
1951 *wrap_pointer
++ = '\t';
1953 fputc_unfiltered ('\t', stream
);
1954 /* Shifting right by 3 produces the number of tab stops
1955 we have already passed, and then adding one and
1956 shifting left 3 advances to the next tab stop. */
1957 chars_printed
= ((chars_printed
>> 3) + 1) << 3;
1963 *wrap_pointer
++ = *lineptr
;
1965 fputc_unfiltered (*lineptr
, stream
);
1970 if (chars_printed
>= chars_per_line
)
1972 unsigned int save_chars
= chars_printed
;
1976 /* If we aren't actually wrapping, don't output newline --
1977 if chars_per_line is right, we probably just overflowed
1978 anyway; if it's wrong, let us keep going. */
1980 fputc_unfiltered ('\n', stream
);
1982 /* Possible new page. */
1983 if (lines_printed
>= lines_per_page
- 1)
1984 prompt_for_continue ();
1986 /* Now output indentation and wrapped string */
1989 fputs_unfiltered (wrap_indent
, stream
);
1990 *wrap_pointer
= '\0'; /* Null-terminate saved stuff */
1991 fputs_unfiltered (wrap_buffer
, stream
); /* and eject it */
1992 /* FIXME, this strlen is what prevents wrap_indent from
1993 containing tabs. However, if we recurse to print it
1994 and count its chars, we risk trouble if wrap_indent is
1995 longer than (the user settable) chars_per_line.
1996 Note also that this can set chars_printed > chars_per_line
1997 if we are printing a long string. */
1998 chars_printed
= strlen (wrap_indent
)
1999 + (save_chars
- wrap_column
);
2000 wrap_pointer
= wrap_buffer
; /* Reset buffer */
2001 wrap_buffer
[0] = '\0';
2002 wrap_column
= 0; /* And disable fancy wrap */
2007 if (*lineptr
== '\n')
2010 wrap_here ((char *) 0); /* Spit out chars, cancel further wraps */
2012 fputc_unfiltered ('\n', stream
);
2019 fputs_filtered (const char *linebuffer
, struct ui_file
*stream
)
2021 fputs_maybe_filtered (linebuffer
, stream
, 1);
2025 putchar_unfiltered (int c
)
2028 ui_file_write (gdb_stdout
, &buf
, 1);
2032 /* Write character C to gdb_stdout using GDB's paging mechanism and return C.
2033 May return nonlocally. */
2036 putchar_filtered (int c
)
2038 return fputc_filtered (c
, gdb_stdout
);
2042 fputc_unfiltered (int c
, struct ui_file
*stream
)
2045 ui_file_write (stream
, &buf
, 1);
2050 fputc_filtered (int c
, struct ui_file
*stream
)
2056 fputs_filtered (buf
, stream
);
2060 /* puts_debug is like fputs_unfiltered, except it prints special
2061 characters in printable fashion. */
2064 puts_debug (char *prefix
, char *string
, char *suffix
)
2068 /* Print prefix and suffix after each line. */
2069 static int new_line
= 1;
2070 static int return_p
= 0;
2071 static char *prev_prefix
= "";
2072 static char *prev_suffix
= "";
2074 if (*string
== '\n')
2077 /* If the prefix is changing, print the previous suffix, a new line,
2078 and the new prefix. */
2079 if ((return_p
|| (strcmp (prev_prefix
, prefix
) != 0)) && !new_line
)
2081 fputs_unfiltered (prev_suffix
, gdb_stdlog
);
2082 fputs_unfiltered ("\n", gdb_stdlog
);
2083 fputs_unfiltered (prefix
, gdb_stdlog
);
2086 /* Print prefix if we printed a newline during the previous call. */
2090 fputs_unfiltered (prefix
, gdb_stdlog
);
2093 prev_prefix
= prefix
;
2094 prev_suffix
= suffix
;
2096 /* Output characters in a printable format. */
2097 while ((ch
= *string
++) != '\0')
2103 fputc_unfiltered (ch
, gdb_stdlog
);
2106 fprintf_unfiltered (gdb_stdlog
, "\\x%02x", ch
& 0xff);
2110 fputs_unfiltered ("\\\\", gdb_stdlog
);
2113 fputs_unfiltered ("\\b", gdb_stdlog
);
2116 fputs_unfiltered ("\\f", gdb_stdlog
);
2120 fputs_unfiltered ("\\n", gdb_stdlog
);
2123 fputs_unfiltered ("\\r", gdb_stdlog
);
2126 fputs_unfiltered ("\\t", gdb_stdlog
);
2129 fputs_unfiltered ("\\v", gdb_stdlog
);
2133 return_p
= ch
== '\r';
2136 /* Print suffix if we printed a newline. */
2139 fputs_unfiltered (suffix
, gdb_stdlog
);
2140 fputs_unfiltered ("\n", gdb_stdlog
);
2145 /* Print a variable number of ARGS using format FORMAT. If this
2146 information is going to put the amount written (since the last call
2147 to REINITIALIZE_MORE_FILTER or the last page break) over the page size,
2148 call prompt_for_continue to get the users permision to continue.
2150 Unlike fprintf, this function does not return a value.
2152 We implement three variants, vfprintf (takes a vararg list and stream),
2153 fprintf (takes a stream to write on), and printf (the usual).
2155 Note also that a longjmp to top level may occur in this routine
2156 (since prompt_for_continue may do so) so this routine should not be
2157 called when cleanups are not in place. */
2160 vfprintf_maybe_filtered (struct ui_file
*stream
, const char *format
,
2161 va_list args
, int filter
)
2164 struct cleanup
*old_cleanups
;
2166 linebuffer
= xstrvprintf (format
, args
);
2167 old_cleanups
= make_cleanup (xfree
, linebuffer
);
2168 fputs_maybe_filtered (linebuffer
, stream
, filter
);
2169 do_cleanups (old_cleanups
);
2174 vfprintf_filtered (struct ui_file
*stream
, const char *format
, va_list args
)
2176 vfprintf_maybe_filtered (stream
, format
, args
, 1);
2180 vfprintf_unfiltered (struct ui_file
*stream
, const char *format
, va_list args
)
2183 struct cleanup
*old_cleanups
;
2185 linebuffer
= xstrvprintf (format
, args
);
2186 old_cleanups
= make_cleanup (xfree
, linebuffer
);
2187 fputs_unfiltered (linebuffer
, stream
);
2188 do_cleanups (old_cleanups
);
2192 vprintf_filtered (const char *format
, va_list args
)
2194 vfprintf_maybe_filtered (gdb_stdout
, format
, args
, 1);
2198 vprintf_unfiltered (const char *format
, va_list args
)
2200 vfprintf_unfiltered (gdb_stdout
, format
, args
);
2204 fprintf_filtered (struct ui_file
*stream
, const char *format
, ...)
2207 va_start (args
, format
);
2208 vfprintf_filtered (stream
, format
, args
);
2213 fprintf_unfiltered (struct ui_file
*stream
, const char *format
, ...)
2216 va_start (args
, format
);
2217 vfprintf_unfiltered (stream
, format
, args
);
2221 /* Like fprintf_filtered, but prints its result indented.
2222 Called as fprintfi_filtered (spaces, stream, format, ...); */
2225 fprintfi_filtered (int spaces
, struct ui_file
*stream
, const char *format
,
2229 va_start (args
, format
);
2230 print_spaces_filtered (spaces
, stream
);
2232 vfprintf_filtered (stream
, format
, args
);
2238 printf_filtered (const char *format
, ...)
2241 va_start (args
, format
);
2242 vfprintf_filtered (gdb_stdout
, format
, args
);
2248 printf_unfiltered (const char *format
, ...)
2251 va_start (args
, format
);
2252 vfprintf_unfiltered (gdb_stdout
, format
, args
);
2256 /* Like printf_filtered, but prints it's result indented.
2257 Called as printfi_filtered (spaces, format, ...); */
2260 printfi_filtered (int spaces
, const char *format
, ...)
2263 va_start (args
, format
);
2264 print_spaces_filtered (spaces
, gdb_stdout
);
2265 vfprintf_filtered (gdb_stdout
, format
, args
);
2269 /* Easy -- but watch out!
2271 This routine is *not* a replacement for puts()! puts() appends a newline.
2272 This one doesn't, and had better not! */
2275 puts_filtered (const char *string
)
2277 fputs_filtered (string
, gdb_stdout
);
2281 puts_unfiltered (const char *string
)
2283 fputs_unfiltered (string
, gdb_stdout
);
2286 /* Return a pointer to N spaces and a null. The pointer is good
2287 until the next call to here. */
2292 static char *spaces
= 0;
2293 static int max_spaces
= -1;
2299 spaces
= (char *) xmalloc (n
+ 1);
2300 for (t
= spaces
+ n
; t
!= spaces
;)
2306 return spaces
+ max_spaces
- n
;
2309 /* Print N spaces. */
2311 print_spaces_filtered (int n
, struct ui_file
*stream
)
2313 fputs_filtered (n_spaces (n
), stream
);
2316 /* C++/ObjC demangler stuff. */
2318 /* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language
2319 LANG, using demangling args ARG_MODE, and print it filtered to STREAM.
2320 If the name is not mangled, or the language for the name is unknown, or
2321 demangling is off, the name is printed in its "raw" form. */
2324 fprintf_symbol_filtered (struct ui_file
*stream
, char *name
,
2325 enum language lang
, int arg_mode
)
2331 /* If user wants to see raw output, no problem. */
2334 fputs_filtered (name
, stream
);
2338 demangled
= language_demangle (language_def (lang
), name
, arg_mode
);
2339 fputs_filtered (demangled
? demangled
: name
, stream
);
2340 if (demangled
!= NULL
)
2348 /* Do a strcmp() type operation on STRING1 and STRING2, ignoring any
2349 differences in whitespace. Returns 0 if they match, non-zero if they
2350 don't (slightly different than strcmp()'s range of return values).
2352 As an extra hack, string1=="FOO(ARGS)" matches string2=="FOO".
2353 This "feature" is useful when searching for matching C++ function names
2354 (such as if the user types 'break FOO', where FOO is a mangled C++
2358 strcmp_iw (const char *string1
, const char *string2
)
2360 while ((*string1
!= '\0') && (*string2
!= '\0'))
2362 while (isspace (*string1
))
2366 while (isspace (*string2
))
2370 if (*string1
!= *string2
)
2374 if (*string1
!= '\0')
2380 return (*string1
!= '\0' && *string1
!= '(') || (*string2
!= '\0');
2383 /* This is like strcmp except that it ignores whitespace and treats
2384 '(' as the first non-NULL character in terms of ordering. Like
2385 strcmp (and unlike strcmp_iw), it returns negative if STRING1 <
2386 STRING2, 0 if STRING2 = STRING2, and positive if STRING1 > STRING2
2387 according to that ordering.
2389 If a list is sorted according to this function and if you want to
2390 find names in the list that match some fixed NAME according to
2391 strcmp_iw(LIST_ELT, NAME), then the place to start looking is right
2392 where this function would put NAME.
2394 Here are some examples of why using strcmp to sort is a bad idea:
2398 Say your partial symtab contains: "foo<char *>", "goo". Then, if
2399 we try to do a search for "foo<char*>", strcmp will locate this
2400 after "foo<char *>" and before "goo". Then lookup_partial_symbol
2401 will start looking at strings beginning with "goo", and will never
2402 see the correct match of "foo<char *>".
2404 Parenthesis example:
2406 In practice, this is less like to be an issue, but I'll give it a
2407 shot. Let's assume that '$' is a legitimate character to occur in
2408 symbols. (Which may well even be the case on some systems.) Then
2409 say that the partial symbol table contains "foo$" and "foo(int)".
2410 strcmp will put them in this order, since '$' < '('. Now, if the
2411 user searches for "foo", then strcmp will sort "foo" before "foo$".
2412 Then lookup_partial_symbol will notice that strcmp_iw("foo$",
2413 "foo") is false, so it won't proceed to the actual match of
2414 "foo(int)" with "foo". */
2417 strcmp_iw_ordered (const char *string1
, const char *string2
)
2419 while ((*string1
!= '\0') && (*string2
!= '\0'))
2421 while (isspace (*string1
))
2425 while (isspace (*string2
))
2429 if (*string1
!= *string2
)
2433 if (*string1
!= '\0')
2442 /* Characters are non-equal unless they're both '\0'; we want to
2443 make sure we get the comparison right according to our
2444 comparison in the cases where one of them is '\0' or '('. */
2446 if (*string2
== '\0')
2451 if (*string2
== '\0')
2456 if (*string2
== '(')
2459 return *string1
- *string2
;
2463 /* A simple comparison function with opposite semantics to strcmp. */
2466 streq (const char *lhs
, const char *rhs
)
2468 return !strcmp (lhs
, rhs
);
2474 ** Answer whether string_to_compare is a full or partial match to
2475 ** template_string. The partial match must be in sequence starting
2479 subset_compare (char *string_to_compare
, char *template_string
)
2482 if (template_string
!= (char *) NULL
&& string_to_compare
!= (char *) NULL
2483 && strlen (string_to_compare
) <= strlen (template_string
))
2486 (template_string
, string_to_compare
, strlen (string_to_compare
)) == 0);
2493 static void pagination_on_command (char *arg
, int from_tty
);
2495 pagination_on_command (char *arg
, int from_tty
)
2497 pagination_enabled
= 1;
2500 static void pagination_on_command (char *arg
, int from_tty
);
2502 pagination_off_command (char *arg
, int from_tty
)
2504 pagination_enabled
= 0;
2509 initialize_utils (void)
2511 struct cmd_list_element
*c
;
2513 add_setshow_uinteger_cmd ("width", class_support
, &chars_per_line
, _("\
2514 Set number of characters gdb thinks are in a line."), _("\
2515 Show number of characters gdb thinks are in a line."), NULL
,
2517 show_chars_per_line
,
2518 &setlist
, &showlist
);
2520 add_setshow_uinteger_cmd ("height", class_support
, &lines_per_page
, _("\
2521 Set number of lines gdb thinks are in a page."), _("\
2522 Show number of lines gdb thinks are in a page."), NULL
,
2524 show_lines_per_page
,
2525 &setlist
, &showlist
);
2529 add_setshow_boolean_cmd ("demangle", class_support
, &demangle
, _("\
2530 Set demangling of encoded C++/ObjC names when displaying symbols."), _("\
2531 Show demangling of encoded C++/ObjC names when displaying symbols."), NULL
,
2534 &setprintlist
, &showprintlist
);
2536 add_setshow_boolean_cmd ("pagination", class_support
,
2537 &pagination_enabled
, _("\
2538 Set state of pagination."), _("\
2539 Show state of pagination."), NULL
,
2541 show_pagination_enabled
,
2542 &setlist
, &showlist
);
2546 add_com ("am", class_support
, pagination_on_command
,
2547 _("Enable pagination"));
2548 add_com ("sm", class_support
, pagination_off_command
,
2549 _("Disable pagination"));
2552 add_setshow_boolean_cmd ("sevenbit-strings", class_support
,
2553 &sevenbit_strings
, _("\
2554 Set printing of 8-bit characters in strings as \\nnn."), _("\
2555 Show printing of 8-bit characters in strings as \\nnn."), NULL
,
2557 show_sevenbit_strings
,
2558 &setprintlist
, &showprintlist
);
2560 add_setshow_boolean_cmd ("asm-demangle", class_support
, &asm_demangle
, _("\
2561 Set demangling of C++/ObjC names in disassembly listings."), _("\
2562 Show demangling of C++/ObjC names in disassembly listings."), NULL
,
2565 &setprintlist
, &showprintlist
);
2568 /* Machine specific function to handle SIGWINCH signal. */
2570 #ifdef SIGWINCH_HANDLER_BODY
2571 SIGWINCH_HANDLER_BODY
2573 /* print routines to handle variable size regs, etc. */
2574 /* temporary storage using circular buffer */
2580 static char buf
[NUMCELLS
][CELLSIZE
];
2581 static int cell
= 0;
2582 if (++cell
>= NUMCELLS
)
2590 return (TARGET_ADDR_BIT
/ 8 * 2);
2594 paddr (CORE_ADDR addr
)
2596 return phex (addr
, TARGET_ADDR_BIT
/ 8);
2600 paddr_nz (CORE_ADDR addr
)
2602 return phex_nz (addr
, TARGET_ADDR_BIT
/ 8);
2606 paddress (CORE_ADDR addr
)
2608 /* Truncate address to the size of a target address, avoiding shifts
2609 larger or equal than the width of a CORE_ADDR. The local
2610 variable ADDR_BIT stops the compiler reporting a shift overflow
2611 when it won't occur. */
2612 /* NOTE: This assumes that the significant address information is
2613 kept in the least significant bits of ADDR - the upper bits were
2614 either zero or sign extended. Should ADDRESS_TO_POINTER() or
2615 some ADDRESS_TO_PRINTABLE() be used to do the conversion? */
2617 int addr_bit
= TARGET_ADDR_BIT
;
2619 if (addr_bit
< (sizeof (CORE_ADDR
) * HOST_CHAR_BIT
))
2620 addr
&= ((CORE_ADDR
) 1 << addr_bit
) - 1;
2621 return hex_string (addr
);
2625 decimal2str (char *sign
, ULONGEST addr
, int width
)
2627 /* Steal code from valprint.c:print_decimal(). Should this worry
2628 about the real size of addr as the above does? */
2629 unsigned long temp
[3];
2630 char *str
= get_cell ();
2635 temp
[i
] = addr
% (1000 * 1000 * 1000);
2636 addr
/= (1000 * 1000 * 1000);
2640 while (addr
!= 0 && i
< (sizeof (temp
) / sizeof (temp
[0])));
2649 xsnprintf (str
, CELLSIZE
, "%s%0*lu", sign
, width
, temp
[0]);
2652 xsnprintf (str
, CELLSIZE
, "%s%0*lu%09lu", sign
, width
,
2656 xsnprintf (str
, CELLSIZE
, "%s%0*lu%09lu%09lu", sign
, width
,
2657 temp
[2], temp
[1], temp
[0]);
2660 internal_error (__FILE__
, __LINE__
,
2661 _("failed internal consistency check"));
2668 octal2str (ULONGEST addr
, int width
)
2670 unsigned long temp
[3];
2671 char *str
= get_cell ();
2676 temp
[i
] = addr
% (0100000 * 0100000);
2677 addr
/= (0100000 * 0100000);
2681 while (addr
!= 0 && i
< (sizeof (temp
) / sizeof (temp
[0])));
2691 xsnprintf (str
, CELLSIZE
, "%*o", width
, 0);
2693 xsnprintf (str
, CELLSIZE
, "0%0*lo", width
, temp
[0]);
2696 xsnprintf (str
, CELLSIZE
, "0%0*lo%010lo", width
, temp
[1], temp
[0]);
2699 xsnprintf (str
, CELLSIZE
, "0%0*lo%010lo%010lo", width
,
2700 temp
[2], temp
[1], temp
[0]);
2703 internal_error (__FILE__
, __LINE__
,
2704 _("failed internal consistency check"));
2711 paddr_u (CORE_ADDR addr
)
2713 return decimal2str ("", addr
, 0);
2717 paddr_d (LONGEST addr
)
2720 return decimal2str ("-", -addr
, 0);
2722 return decimal2str ("", addr
, 0);
2725 /* Eliminate warning from compiler on 32-bit systems. */
2726 static int thirty_two
= 32;
2729 phex (ULONGEST l
, int sizeof_l
)
2737 xsnprintf (str
, CELLSIZE
, "%08lx%08lx",
2738 (unsigned long) (l
>> thirty_two
),
2739 (unsigned long) (l
& 0xffffffff));
2743 xsnprintf (str
, CELLSIZE
, "%08lx", (unsigned long) l
);
2747 xsnprintf (str
, CELLSIZE
, "%04x", (unsigned short) (l
& 0xffff));
2750 str
= phex (l
, sizeof (l
));
2758 phex_nz (ULONGEST l
, int sizeof_l
)
2766 unsigned long high
= (unsigned long) (l
>> thirty_two
);
2769 xsnprintf (str
, CELLSIZE
, "%lx",
2770 (unsigned long) (l
& 0xffffffff));
2772 xsnprintf (str
, CELLSIZE
, "%lx%08lx", high
,
2773 (unsigned long) (l
& 0xffffffff));
2778 xsnprintf (str
, CELLSIZE
, "%lx", (unsigned long) l
);
2782 xsnprintf (str
, CELLSIZE
, "%x", (unsigned short) (l
& 0xffff));
2785 str
= phex_nz (l
, sizeof (l
));
2792 /* Converts a LONGEST to a C-format hexadecimal literal and stores it
2793 in a static string. Returns a pointer to this string. */
2795 hex_string (LONGEST num
)
2797 char *result
= get_cell ();
2798 xsnprintf (result
, CELLSIZE
, "0x%s", phex_nz (num
, sizeof (num
)));
2802 /* Converts a LONGEST number to a C-format hexadecimal literal and
2803 stores it in a static string. Returns a pointer to this string
2804 that is valid until the next call. The number is padded on the
2805 left with 0s to at least WIDTH characters. */
2807 hex_string_custom (LONGEST num
, int width
)
2809 char *result
= get_cell ();
2810 char *result_end
= result
+ CELLSIZE
- 1;
2811 const char *hex
= phex_nz (num
, sizeof (num
));
2812 int hex_len
= strlen (hex
);
2814 if (hex_len
> width
)
2816 if (width
+ 2 >= CELLSIZE
)
2817 internal_error (__FILE__
, __LINE__
,
2818 _("hex_string_custom: insufficient space to store result"));
2820 strcpy (result_end
- width
- 2, "0x");
2821 memset (result_end
- width
, '0', width
);
2822 strcpy (result_end
- hex_len
, hex
);
2823 return result_end
- width
- 2;
2826 /* Convert VAL to a numeral in the given radix. For
2827 * radix 10, IS_SIGNED may be true, indicating a signed quantity;
2828 * otherwise VAL is interpreted as unsigned. If WIDTH is supplied,
2829 * it is the minimum width (0-padded if needed). USE_C_FORMAT means
2830 * to use C format in all cases. If it is false, then 'x'
2831 * and 'o' formats do not include a prefix (0x or leading 0). */
2834 int_string (LONGEST val
, int radix
, int is_signed
, int width
,
2843 result
= hex_string (val
);
2845 result
= hex_string_custom (val
, width
);
2852 if (is_signed
&& val
< 0)
2853 return decimal2str ("-", -val
, width
);
2855 return decimal2str ("", val
, width
);
2859 char *result
= octal2str (val
, width
);
2860 if (use_c_format
|| val
== 0)
2866 internal_error (__FILE__
, __LINE__
,
2867 _("failed internal consistency check"));
2871 /* Convert a CORE_ADDR into a string. */
2873 core_addr_to_string (const CORE_ADDR addr
)
2875 char *str
= get_cell ();
2877 strcat (str
, phex (addr
, sizeof (addr
)));
2882 core_addr_to_string_nz (const CORE_ADDR addr
)
2884 char *str
= get_cell ();
2886 strcat (str
, phex_nz (addr
, sizeof (addr
)));
2890 /* Convert a string back into a CORE_ADDR. */
2892 string_to_core_addr (const char *my_string
)
2895 if (my_string
[0] == '0' && tolower (my_string
[1]) == 'x')
2897 /* Assume that it is in decimal. */
2899 for (i
= 2; my_string
[i
] != '\0'; i
++)
2901 if (isdigit (my_string
[i
]))
2902 addr
= (my_string
[i
] - '0') + (addr
* 16);
2903 else if (isxdigit (my_string
[i
]))
2904 addr
= (tolower (my_string
[i
]) - 'a' + 0xa) + (addr
* 16);
2906 internal_error (__FILE__
, __LINE__
, _("invalid hex"));
2911 /* Assume that it is in decimal. */
2913 for (i
= 0; my_string
[i
] != '\0'; i
++)
2915 if (isdigit (my_string
[i
]))
2916 addr
= (my_string
[i
] - '0') + (addr
* 10);
2918 internal_error (__FILE__
, __LINE__
, _("invalid decimal"));
2925 gdb_realpath (const char *filename
)
2927 /* Method 1: The system has a compile time upper bound on a filename
2928 path. Use that and realpath() to canonicalize the name. This is
2929 the most common case. Note that, if there isn't a compile time
2930 upper bound, you want to avoid realpath() at all costs. */
2931 #if defined(HAVE_REALPATH)
2933 # if defined (PATH_MAX)
2935 # define USE_REALPATH
2936 # elif defined (MAXPATHLEN)
2937 char buf
[MAXPATHLEN
];
2938 # define USE_REALPATH
2940 # if defined (USE_REALPATH)
2941 const char *rp
= realpath (filename
, buf
);
2944 return xstrdup (rp
);
2947 #endif /* HAVE_REALPATH */
2949 /* Method 2: The host system (i.e., GNU) has the function
2950 canonicalize_file_name() which malloc's a chunk of memory and
2951 returns that, use that. */
2952 #if defined(HAVE_CANONICALIZE_FILE_NAME)
2954 char *rp
= canonicalize_file_name (filename
);
2956 return xstrdup (filename
);
2962 /* FIXME: cagney/2002-11-13:
2964 Method 2a: Use realpath() with a NULL buffer. Some systems, due
2965 to the problems described in in method 3, have modified their
2966 realpath() implementation so that it will allocate a buffer when
2967 NULL is passed in. Before this can be used, though, some sort of
2968 configure time test would need to be added. Otherwize the code
2969 will likely core dump. */
2971 /* Method 3: Now we're getting desperate! The system doesn't have a
2972 compile time buffer size and no alternative function. Query the
2973 OS, using pathconf(), for the buffer limit. Care is needed
2974 though, some systems do not limit PATH_MAX (return -1 for
2975 pathconf()) making it impossible to pass a correctly sized buffer
2976 to realpath() (it could always overflow). On those systems, we
2978 #if defined (HAVE_REALPATH) && defined (HAVE_UNISTD_H) && defined(HAVE_ALLOCA)
2980 /* Find out the max path size. */
2981 long path_max
= pathconf ("/", _PC_PATH_MAX
);
2984 /* PATH_MAX is bounded. */
2985 char *buf
= alloca (path_max
);
2986 char *rp
= realpath (filename
, buf
);
2987 return xstrdup (rp
? rp
: filename
);
2992 /* This system is a lost cause, just dup the buffer. */
2993 return xstrdup (filename
);
2996 /* Return a copy of FILENAME, with its directory prefix canonicalized
3000 xfullpath (const char *filename
)
3002 const char *base_name
= lbasename (filename
);
3007 /* Extract the basename of filename, and return immediately
3008 a copy of filename if it does not contain any directory prefix. */
3009 if (base_name
== filename
)
3010 return xstrdup (filename
);
3012 dir_name
= alloca ((size_t) (base_name
- filename
+ 2));
3013 /* Allocate enough space to store the dir_name + plus one extra
3014 character sometimes needed under Windows (see below), and
3015 then the closing \000 character */
3016 strncpy (dir_name
, filename
, base_name
- filename
);
3017 dir_name
[base_name
- filename
] = '\000';
3019 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
3020 /* We need to be careful when filename is of the form 'd:foo', which
3021 is equivalent of d:./foo, which is totally different from d:/foo. */
3022 if (strlen (dir_name
) == 2 && isalpha (dir_name
[0]) && dir_name
[1] == ':')
3025 dir_name
[3] = '\000';
3029 /* Canonicalize the directory prefix, and build the resulting
3030 filename. If the dirname realpath already contains an ending
3031 directory separator, avoid doubling it. */
3032 real_path
= gdb_realpath (dir_name
);
3033 if (IS_DIR_SEPARATOR (real_path
[strlen (real_path
) - 1]))
3034 result
= concat (real_path
, base_name
, (char *)NULL
);
3036 result
= concat (real_path
, SLASH_STRING
, base_name
, (char *)NULL
);
3043 /* This is the 32-bit CRC function used by the GNU separate debug
3044 facility. An executable may contain a section named
3045 .gnu_debuglink, which holds the name of a separate executable file
3046 containing its debug info, and a checksum of that file's contents,
3047 computed using this function. */
3049 gnu_debuglink_crc32 (unsigned long crc
, unsigned char *buf
, size_t len
)
3051 static const unsigned long crc32_table
[256] = {
3052 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419,
3053 0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4,
3054 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07,
3055 0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,
3056 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856,
3057 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
3058 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4,
3059 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
3060 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3,
3061 0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a,
3062 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599,
3063 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
3064 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190,
3065 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f,
3066 0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e,
3067 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
3068 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed,
3069 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
3070 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3,
3071 0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2,
3072 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a,
3073 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5,
3074 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010,
3075 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
3076 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17,
3077 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6,
3078 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615,
3079 0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,
3080 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344,
3081 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
3082 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a,
3083 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
3084 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1,
3085 0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c,
3086 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef,
3087 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
3088 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe,
3089 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31,
3090 0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c,
3091 0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
3092 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b,
3093 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
3094 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1,
3095 0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,
3096 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278,
3097 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7,
3098 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66,
3099 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
3100 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605,
3101 0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8,
3102 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b,
3107 crc
= ~crc
& 0xffffffff;
3108 for (end
= buf
+ len
; buf
< end
; ++buf
)
3109 crc
= crc32_table
[(crc
^ *buf
) & 0xff] ^ (crc
>> 8);
3110 return ~crc
& 0xffffffff;;
3114 align_up (ULONGEST v
, int n
)
3116 /* Check that N is really a power of two. */
3117 gdb_assert (n
&& (n
& (n
-1)) == 0);
3118 return (v
+ n
- 1) & -n
;
3122 align_down (ULONGEST v
, int n
)
3124 /* Check that N is really a power of two. */
3125 gdb_assert (n
&& (n
& (n
-1)) == 0);
3129 /* Allocation function for the libiberty hash table which uses an
3130 obstack. The obstack is passed as DATA. */
3133 hashtab_obstack_allocate (void *data
, size_t size
, size_t count
)
3135 unsigned int total
= size
* count
;
3136 void *ptr
= obstack_alloc ((struct obstack
*) data
, total
);
3137 memset (ptr
, 0, total
);
3141 /* Trivial deallocation function for the libiberty splay tree and hash
3142 table - don't deallocate anything. Rely on later deletion of the
3143 obstack. DATA will be the obstack, although it is not needed
3147 dummy_obstack_deallocate (void *object
, void *data
)