1 /* General utility routines for GDB, the GNU debugger.
3 Copyright 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
4 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 Free Software
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 59 Temple Place - Suite 330,
22 Boston, MA 02111-1307, USA. */
25 #include "gdb_assert.h"
27 #include "gdb_string.h"
28 #include "event-top.h"
34 /* SunOS's curses.h has a '#define reg register' in it. Thank you Sun. */
45 #include "expression.h"
49 #include "filenames.h"
51 #include "inferior.h" /* for signed_pointer_to_address */
53 #include <sys/param.h> /* For MAXPATHLEN */
62 #include <readline/readline.h>
68 #ifdef NEED_DECLARATION_MALLOC
69 extern PTR
malloc (); /* OK: PTR */
71 #ifdef NEED_DECLARATION_REALLOC
72 extern PTR
realloc (); /* OK: PTR */
74 #ifdef NEED_DECLARATION_FREE
77 /* Actually, we'll never have the decl, since we don't define _GNU_SOURCE. */
78 #if defined(HAVE_CANONICALIZE_FILE_NAME) \
79 && defined(NEED_DECLARATION_CANONICALIZE_FILE_NAME)
80 extern char *canonicalize_file_name (const char *);
83 /* readline defines this. */
86 void (*error_begin_hook
) (void);
88 /* Holds the last error message issued by gdb */
90 static struct ui_file
*gdb_lasterr
;
92 /* Prototypes for local functions */
94 static void vfprintf_maybe_filtered (struct ui_file
*, const char *,
97 static void fputs_maybe_filtered (const char *, struct ui_file
*, int);
99 #if defined (USE_MMALLOC) && !defined (NO_MMCHECK)
100 static void malloc_botch (void);
103 static void prompt_for_continue (void);
105 static void set_width_command (char *, int, struct cmd_list_element
*);
107 static void set_width (void);
109 /* Chain of cleanup actions established with make_cleanup,
110 to be executed if an error happens. */
112 static struct cleanup
*cleanup_chain
; /* cleaned up after a failed command */
113 static struct cleanup
*final_cleanup_chain
; /* cleaned up when gdb exits */
114 static struct cleanup
*run_cleanup_chain
; /* cleaned up on each 'run' */
115 static struct cleanup
*exec_cleanup_chain
; /* cleaned up on each execution command */
116 /* cleaned up on each error from within an execution command */
117 static struct cleanup
*exec_error_cleanup_chain
;
119 /* Pointer to what is left to do for an execution command after the
120 target stops. Used only in asynchronous mode, by targets that
121 support async execution. The finish and until commands use it. So
122 does the target extended-remote command. */
123 struct continuation
*cmd_continuation
;
124 struct continuation
*intermediate_continuation
;
126 /* Nonzero if we have job control. */
130 /* Nonzero means a quit has been requested. */
134 /* Nonzero means quit immediately if Control-C is typed now, rather
135 than waiting until QUIT is executed. Be careful in setting this;
136 code which executes with immediate_quit set has to be very careful
137 about being able to deal with being interrupted at any time. It is
138 almost always better to use QUIT; the only exception I can think of
139 is being able to quit out of a system call (using EINTR loses if
140 the SIGINT happens between the previous QUIT and the system call).
141 To immediately quit in the case in which a SIGINT happens between
142 the previous QUIT and setting immediate_quit (desirable anytime we
143 expect to block), call QUIT after setting immediate_quit. */
147 /* Nonzero means that encoded C++/ObjC names should be printed out in their
148 C++/ObjC form rather than raw. */
152 /* Nonzero means that encoded C++/ObjC names should be printed out in their
153 C++/ObjC form even in assembler language displays. If this is set, but
154 DEMANGLE is zero, names are printed raw, i.e. DEMANGLE controls. */
156 int asm_demangle
= 0;
158 /* Nonzero means that strings with character values >0x7F should be printed
159 as octal escapes. Zero means just print the value (e.g. it's an
160 international character, and the terminal or window can cope.) */
162 int sevenbit_strings
= 0;
164 /* String to be printed before error messages, if any. */
166 char *error_pre_print
;
168 /* String to be printed before quit messages, if any. */
170 char *quit_pre_print
;
172 /* String to be printed before warning messages, if any. */
174 char *warning_pre_print
= "\nwarning: ";
176 int pagination_enabled
= 1;
179 /* Add a new cleanup to the cleanup_chain,
180 and return the previous chain pointer
181 to be passed later to do_cleanups or discard_cleanups.
182 Args are FUNCTION to clean up with, and ARG to pass to it. */
185 make_cleanup (make_cleanup_ftype
*function
, void *arg
)
187 return make_my_cleanup (&cleanup_chain
, function
, arg
);
191 make_final_cleanup (make_cleanup_ftype
*function
, void *arg
)
193 return make_my_cleanup (&final_cleanup_chain
, function
, arg
);
197 make_run_cleanup (make_cleanup_ftype
*function
, void *arg
)
199 return make_my_cleanup (&run_cleanup_chain
, function
, arg
);
203 make_exec_cleanup (make_cleanup_ftype
*function
, void *arg
)
205 return make_my_cleanup (&exec_cleanup_chain
, function
, arg
);
209 make_exec_error_cleanup (make_cleanup_ftype
*function
, void *arg
)
211 return make_my_cleanup (&exec_error_cleanup_chain
, function
, arg
);
215 do_freeargv (void *arg
)
217 freeargv ((char **) arg
);
221 make_cleanup_freeargv (char **arg
)
223 return make_my_cleanup (&cleanup_chain
, do_freeargv
, arg
);
227 do_bfd_close_cleanup (void *arg
)
233 make_cleanup_bfd_close (bfd
*abfd
)
235 return make_cleanup (do_bfd_close_cleanup
, abfd
);
239 do_close_cleanup (void *arg
)
247 make_cleanup_close (int fd
)
249 int *saved_fd
= xmalloc (sizeof (fd
));
251 return make_cleanup (do_close_cleanup
, saved_fd
);
255 do_ui_file_delete (void *arg
)
257 ui_file_delete (arg
);
261 make_cleanup_ui_file_delete (struct ui_file
*arg
)
263 return make_my_cleanup (&cleanup_chain
, do_ui_file_delete
, arg
);
267 make_my_cleanup (struct cleanup
**pmy_chain
, make_cleanup_ftype
*function
,
270 register struct cleanup
*new
271 = (struct cleanup
*) xmalloc (sizeof (struct cleanup
));
272 register struct cleanup
*old_chain
= *pmy_chain
;
274 new->next
= *pmy_chain
;
275 new->function
= function
;
282 /* Discard cleanups and do the actions they describe
283 until we get back to the point OLD_CHAIN in the cleanup_chain. */
286 do_cleanups (register struct cleanup
*old_chain
)
288 do_my_cleanups (&cleanup_chain
, old_chain
);
292 do_final_cleanups (register struct cleanup
*old_chain
)
294 do_my_cleanups (&final_cleanup_chain
, old_chain
);
298 do_run_cleanups (register struct cleanup
*old_chain
)
300 do_my_cleanups (&run_cleanup_chain
, old_chain
);
304 do_exec_cleanups (register struct cleanup
*old_chain
)
306 do_my_cleanups (&exec_cleanup_chain
, old_chain
);
310 do_exec_error_cleanups (register struct cleanup
*old_chain
)
312 do_my_cleanups (&exec_error_cleanup_chain
, old_chain
);
316 do_my_cleanups (register struct cleanup
**pmy_chain
,
317 register struct cleanup
*old_chain
)
319 register struct cleanup
*ptr
;
320 while ((ptr
= *pmy_chain
) != old_chain
)
322 *pmy_chain
= ptr
->next
; /* Do this first incase recursion */
323 (*ptr
->function
) (ptr
->arg
);
328 /* Discard cleanups, not doing the actions they describe,
329 until we get back to the point OLD_CHAIN in the cleanup_chain. */
332 discard_cleanups (register struct cleanup
*old_chain
)
334 discard_my_cleanups (&cleanup_chain
, old_chain
);
338 discard_final_cleanups (register struct cleanup
*old_chain
)
340 discard_my_cleanups (&final_cleanup_chain
, old_chain
);
344 discard_exec_error_cleanups (register struct cleanup
*old_chain
)
346 discard_my_cleanups (&exec_error_cleanup_chain
, old_chain
);
350 discard_my_cleanups (register struct cleanup
**pmy_chain
,
351 register struct cleanup
*old_chain
)
353 register struct cleanup
*ptr
;
354 while ((ptr
= *pmy_chain
) != old_chain
)
356 *pmy_chain
= ptr
->next
;
361 /* Set the cleanup_chain to 0, and return the old cleanup chain. */
365 return save_my_cleanups (&cleanup_chain
);
369 save_final_cleanups (void)
371 return save_my_cleanups (&final_cleanup_chain
);
375 save_my_cleanups (struct cleanup
**pmy_chain
)
377 struct cleanup
*old_chain
= *pmy_chain
;
383 /* Restore the cleanup chain from a previously saved chain. */
385 restore_cleanups (struct cleanup
*chain
)
387 restore_my_cleanups (&cleanup_chain
, chain
);
391 restore_final_cleanups (struct cleanup
*chain
)
393 restore_my_cleanups (&final_cleanup_chain
, chain
);
397 restore_my_cleanups (struct cleanup
**pmy_chain
, struct cleanup
*chain
)
402 /* This function is useful for cleanups.
406 old_chain = make_cleanup (free_current_contents, &foo);
408 to arrange to free the object thus allocated. */
411 free_current_contents (void *ptr
)
413 void **location
= ptr
;
414 if (location
== NULL
)
415 internal_error (__FILE__
, __LINE__
,
416 "free_current_contents: NULL pointer");
417 if (*location
!= NULL
)
424 /* Provide a known function that does nothing, to use as a base for
425 for a possibly long chain of cleanups. This is useful where we
426 use the cleanup chain for handling normal cleanups as well as dealing
427 with cleanups that need to be done as a result of a call to error().
428 In such cases, we may not be certain where the first cleanup is, unless
429 we have a do-nothing one to always use as the base. */
433 null_cleanup (void *arg
)
437 /* Add a continuation to the continuation list, the global list
438 cmd_continuation. The new continuation will be added at the front.*/
440 add_continuation (void (*continuation_hook
) (struct continuation_arg
*),
441 struct continuation_arg
*arg_list
)
443 struct continuation
*continuation_ptr
;
446 (struct continuation
*) xmalloc (sizeof (struct continuation
));
447 continuation_ptr
->continuation_hook
= continuation_hook
;
448 continuation_ptr
->arg_list
= arg_list
;
449 continuation_ptr
->next
= cmd_continuation
;
450 cmd_continuation
= continuation_ptr
;
453 /* Walk down the cmd_continuation list, and execute all the
454 continuations. There is a problem though. In some cases new
455 continuations may be added while we are in the middle of this
456 loop. If this happens they will be added in the front, and done
457 before we have a chance of exhausting those that were already
458 there. We need to then save the beginning of the list in a pointer
459 and do the continuations from there on, instead of using the
460 global beginning of list as our iteration pointer.*/
462 do_all_continuations (void)
464 struct continuation
*continuation_ptr
;
465 struct continuation
*saved_continuation
;
467 /* Copy the list header into another pointer, and set the global
468 list header to null, so that the global list can change as a side
469 effect of invoking the continuations and the processing of
470 the preexisting continuations will not be affected. */
471 continuation_ptr
= cmd_continuation
;
472 cmd_continuation
= NULL
;
474 /* Work now on the list we have set aside. */
475 while (continuation_ptr
)
477 (continuation_ptr
->continuation_hook
) (continuation_ptr
->arg_list
);
478 saved_continuation
= continuation_ptr
;
479 continuation_ptr
= continuation_ptr
->next
;
480 xfree (saved_continuation
);
484 /* Walk down the cmd_continuation list, and get rid of all the
487 discard_all_continuations (void)
489 struct continuation
*continuation_ptr
;
491 while (cmd_continuation
)
493 continuation_ptr
= cmd_continuation
;
494 cmd_continuation
= continuation_ptr
->next
;
495 xfree (continuation_ptr
);
499 /* Add a continuation to the continuation list, the global list
500 intermediate_continuation. The new continuation will be added at the front.*/
502 add_intermediate_continuation (void (*continuation_hook
)
503 (struct continuation_arg
*),
504 struct continuation_arg
*arg_list
)
506 struct continuation
*continuation_ptr
;
509 (struct continuation
*) xmalloc (sizeof (struct continuation
));
510 continuation_ptr
->continuation_hook
= continuation_hook
;
511 continuation_ptr
->arg_list
= arg_list
;
512 continuation_ptr
->next
= intermediate_continuation
;
513 intermediate_continuation
= continuation_ptr
;
516 /* Walk down the cmd_continuation list, and execute all the
517 continuations. There is a problem though. In some cases new
518 continuations may be added while we are in the middle of this
519 loop. If this happens they will be added in the front, and done
520 before we have a chance of exhausting those that were already
521 there. We need to then save the beginning of the list in a pointer
522 and do the continuations from there on, instead of using the
523 global beginning of list as our iteration pointer.*/
525 do_all_intermediate_continuations (void)
527 struct continuation
*continuation_ptr
;
528 struct continuation
*saved_continuation
;
530 /* Copy the list header into another pointer, and set the global
531 list header to null, so that the global list can change as a side
532 effect of invoking the continuations and the processing of
533 the preexisting continuations will not be affected. */
534 continuation_ptr
= intermediate_continuation
;
535 intermediate_continuation
= NULL
;
537 /* Work now on the list we have set aside. */
538 while (continuation_ptr
)
540 (continuation_ptr
->continuation_hook
) (continuation_ptr
->arg_list
);
541 saved_continuation
= continuation_ptr
;
542 continuation_ptr
= continuation_ptr
->next
;
543 xfree (saved_continuation
);
547 /* Walk down the cmd_continuation list, and get rid of all the
550 discard_all_intermediate_continuations (void)
552 struct continuation
*continuation_ptr
;
554 while (intermediate_continuation
)
556 continuation_ptr
= intermediate_continuation
;
557 intermediate_continuation
= continuation_ptr
->next
;
558 xfree (continuation_ptr
);
564 /* Print a warning message. The first argument STRING is the warning
565 message, used as an fprintf format string, the second is the
566 va_list of arguments for that string. A warning is unfiltered (not
567 paginated) so that the user does not need to page through each
568 screen full of warnings when there are lots of them. */
571 vwarning (const char *string
, va_list args
)
574 (*warning_hook
) (string
, args
);
577 target_terminal_ours ();
578 wrap_here (""); /* Force out any buffered output */
579 gdb_flush (gdb_stdout
);
580 if (warning_pre_print
)
581 fprintf_unfiltered (gdb_stderr
, warning_pre_print
);
582 vfprintf_unfiltered (gdb_stderr
, string
, args
);
583 fprintf_unfiltered (gdb_stderr
, "\n");
588 /* Print a warning message.
589 The first argument STRING is the warning message, used as a fprintf string,
590 and the remaining args are passed as arguments to it.
591 The primary difference between warnings and errors is that a warning
592 does not force the return to command level. */
595 warning (const char *string
, ...)
598 va_start (args
, string
);
599 vwarning (string
, args
);
603 /* Print an error message and return to command level.
604 The first argument STRING is the error message, used as a fprintf string,
605 and the remaining args are passed as arguments to it. */
608 verror (const char *string
, va_list args
)
610 struct ui_file
*tmp_stream
= mem_fileopen ();
611 make_cleanup_ui_file_delete (tmp_stream
);
612 vfprintf_unfiltered (tmp_stream
, string
, args
);
613 error_stream (tmp_stream
);
617 error (const char *string
, ...)
620 va_start (args
, string
);
621 verror (string
, args
);
626 do_write (void *data
, const char *buffer
, long length_buffer
)
628 ui_file_write (data
, buffer
, length_buffer
);
632 error_stream (struct ui_file
*stream
)
634 if (error_begin_hook
)
637 /* Copy the stream into the GDB_LASTERR buffer. */
638 ui_file_rewind (gdb_lasterr
);
639 ui_file_put (stream
, do_write
, gdb_lasterr
);
641 /* Write the message plus any error_pre_print to gdb_stderr. */
642 target_terminal_ours ();
643 wrap_here (""); /* Force out any buffered output */
644 gdb_flush (gdb_stdout
);
645 annotate_error_begin ();
647 fprintf_filtered (gdb_stderr
, error_pre_print
);
648 ui_file_put (stream
, do_write
, gdb_stderr
);
649 fprintf_filtered (gdb_stderr
, "\n");
651 throw_exception (RETURN_ERROR
);
654 /* Get the last error message issued by gdb */
657 error_last_message (void)
660 return ui_file_xstrdup (gdb_lasterr
, &len
);
663 /* This is to be called by main() at the very beginning */
668 gdb_lasterr
= mem_fileopen ();
671 /* Print a message reporting an internal error/warning. Ask the user
672 if they want to continue, dump core, or just exit. Return
673 something to indicate a quit. */
675 struct internal_problem
678 /* FIXME: cagney/2002-08-15: There should be ``maint set/show''
679 commands available for controlling these variables. */
680 enum auto_boolean should_quit
;
681 enum auto_boolean should_dump_core
;
684 /* Report a problem, internal to GDB, to the user. Once the problem
685 has been reported, and assuming GDB didn't quit, the caller can
686 either allow execution to resume or throw an error. */
689 internal_vproblem (struct internal_problem
*problem
,
690 const char *file
, int line
, const char *fmt
, va_list ap
)
692 static char msg
[] = "Recursive internal problem.\n";
697 /* Don't allow infinite error/warning recursion. */
705 fputs_unfiltered (msg
, gdb_stderr
);
706 abort (); /* NOTE: GDB has only three calls to abort(). */
709 write (STDERR_FILENO
, msg
, sizeof (msg
));
713 /* Try to get the message out and at the start of a new line. */
714 target_terminal_ours ();
717 /* The error/warning message. Format using a style similar to a
718 compiler error message. */
719 fprintf_unfiltered (gdb_stderr
, "%s:%d: %s: ", file
, line
, problem
->name
);
720 vfprintf_unfiltered (gdb_stderr
, fmt
, ap
);
721 fputs_unfiltered ("\n", gdb_stderr
);
723 /* Provide more details so that the user knows that they are living
725 fprintf_unfiltered (gdb_stderr
, "\
726 A problem internal to GDB has been detected. Further\n\
727 debugging may prove unreliable.\n");
729 switch (problem
->should_quit
)
731 case AUTO_BOOLEAN_AUTO
:
732 /* Default (yes/batch case) is to quit GDB. When in batch mode
733 this lessens the likelhood of GDB going into an infinate
735 quit_p
= query ("Quit this debugging session? ");
737 case AUTO_BOOLEAN_TRUE
:
740 case AUTO_BOOLEAN_FALSE
:
744 internal_error (__FILE__
, __LINE__
, "bad switch");
747 switch (problem
->should_dump_core
)
749 case AUTO_BOOLEAN_AUTO
:
750 /* Default (yes/batch case) is to dump core. This leaves a GDB
751 `dropping' so that it is easier to see that something went
753 dump_core_p
= query ("Create a core file of GDB? ");
756 case AUTO_BOOLEAN_TRUE
:
759 case AUTO_BOOLEAN_FALSE
:
763 internal_error (__FILE__
, __LINE__
, "bad switch");
769 abort (); /* NOTE: GDB has only three calls to abort(). */
778 abort (); /* NOTE: GDB has only three calls to abort(). */
785 static struct internal_problem internal_error_problem
= {
786 "internal-error", AUTO_BOOLEAN_AUTO
, AUTO_BOOLEAN_AUTO
790 internal_verror (const char *file
, int line
, const char *fmt
, va_list ap
)
792 internal_vproblem (&internal_error_problem
, file
, line
, fmt
, ap
);
793 throw_exception (RETURN_ERROR
);
797 internal_error (const char *file
, int line
, const char *string
, ...)
800 va_start (ap
, string
);
801 internal_verror (file
, line
, string
, ap
);
805 static struct internal_problem internal_warning_problem
= {
806 "internal-error", AUTO_BOOLEAN_AUTO
, AUTO_BOOLEAN_AUTO
810 internal_vwarning (const char *file
, int line
, const char *fmt
, va_list ap
)
812 internal_vproblem (&internal_warning_problem
, file
, line
, fmt
, ap
);
816 internal_warning (const char *file
, int line
, const char *string
, ...)
819 va_start (ap
, string
);
820 internal_vwarning (file
, line
, string
, ap
);
824 /* The strerror() function can return NULL for errno values that are
825 out of range. Provide a "safe" version that always returns a
829 safe_strerror (int errnum
)
834 if ((msg
= strerror (errnum
)) == NULL
)
836 sprintf (buf
, "(undocumented errno %d)", errnum
);
842 /* Print the system error message for errno, and also mention STRING
843 as the file name for which the error was encountered.
844 Then return to command level. */
847 perror_with_name (const char *string
)
852 err
= safe_strerror (errno
);
853 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
854 strcpy (combined
, string
);
855 strcat (combined
, ": ");
856 strcat (combined
, err
);
858 /* I understand setting these is a matter of taste. Still, some people
859 may clear errno but not know about bfd_error. Doing this here is not
861 bfd_set_error (bfd_error_no_error
);
864 error ("%s.", combined
);
867 /* Print the system error message for ERRCODE, and also mention STRING
868 as the file name for which the error was encountered. */
871 print_sys_errmsg (const char *string
, int errcode
)
876 err
= safe_strerror (errcode
);
877 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
878 strcpy (combined
, string
);
879 strcat (combined
, ": ");
880 strcat (combined
, err
);
882 /* We want anything which was printed on stdout to come out first, before
884 gdb_flush (gdb_stdout
);
885 fprintf_unfiltered (gdb_stderr
, "%s.\n", combined
);
888 /* Control C eventually causes this to be called, at a convenient time. */
893 struct serial
*gdb_stdout_serial
= serial_fdopen (1);
895 target_terminal_ours ();
897 /* We want all output to appear now, before we print "Quit". We
898 have 3 levels of buffering we have to flush (it's possible that
899 some of these should be changed to flush the lower-level ones
902 /* 1. The _filtered buffer. */
903 wrap_here ((char *) 0);
905 /* 2. The stdio buffer. */
906 gdb_flush (gdb_stdout
);
907 gdb_flush (gdb_stderr
);
909 /* 3. The system-level buffer. */
910 serial_drain_output (gdb_stdout_serial
);
911 serial_un_fdopen (gdb_stdout_serial
);
913 annotate_error_begin ();
915 /* Don't use *_filtered; we don't want to prompt the user to continue. */
917 fprintf_unfiltered (gdb_stderr
, quit_pre_print
);
920 /* No steenking SIGINT will ever be coming our way when the
921 program is resumed. Don't lie. */
922 fprintf_unfiltered (gdb_stderr
, "Quit\n");
925 /* If there is no terminal switching for this target, then we can't
926 possibly get screwed by the lack of job control. */
927 || current_target
.to_terminal_ours
== NULL
)
928 fprintf_unfiltered (gdb_stderr
, "Quit\n");
930 fprintf_unfiltered (gdb_stderr
,
931 "Quit (expect signal SIGINT when the program is resumed)\n");
933 throw_exception (RETURN_QUIT
);
936 /* Control C comes here */
938 request_quit (int signo
)
941 /* Restore the signal handler. Harmless with BSD-style signals, needed
942 for System V-style signals. So just always do it, rather than worrying
943 about USG defines and stuff like that. */
944 signal (signo
, request_quit
);
954 /* Memory management stuff (malloc friends). */
956 #if !defined (USE_MMALLOC)
959 mmalloc (void *md
, size_t size
)
961 return malloc (size
); /* NOTE: GDB's only call to malloc() */
965 mrealloc (void *md
, void *ptr
, size_t size
)
967 if (ptr
== 0) /* Guard against old realloc's */
968 return mmalloc (md
, size
);
970 return realloc (ptr
, size
); /* NOTE: GDB's only call to ralloc() */
974 mcalloc (void *md
, size_t number
, size_t size
)
976 return calloc (number
, size
); /* NOTE: GDB's only call to calloc() */
980 mfree (void *md
, void *ptr
)
982 free (ptr
); /* NOTE: GDB's only call to free() */
985 #endif /* USE_MMALLOC */
987 #if !defined (USE_MMALLOC) || defined (NO_MMCHECK)
990 init_malloc (void *md
)
994 #else /* Have mmalloc and want corruption checking */
999 fprintf_unfiltered (gdb_stderr
, "Memory corruption\n");
1000 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
1003 /* Attempt to install hooks in mmalloc/mrealloc/mfree for the heap specified
1004 by MD, to detect memory corruption. Note that MD may be NULL to specify
1005 the default heap that grows via sbrk.
1007 Note that for freshly created regions, we must call mmcheckf prior to any
1008 mallocs in the region. Otherwise, any region which was allocated prior to
1009 installing the checking hooks, which is later reallocated or freed, will
1010 fail the checks! The mmcheck function only allows initial hooks to be
1011 installed before the first mmalloc. However, anytime after we have called
1012 mmcheck the first time to install the checking hooks, we can call it again
1013 to update the function pointer to the memory corruption handler.
1015 Returns zero on failure, non-zero on success. */
1017 #ifndef MMCHECK_FORCE
1018 #define MMCHECK_FORCE 0
1022 init_malloc (void *md
)
1024 if (!mmcheckf (md
, malloc_botch
, MMCHECK_FORCE
))
1026 /* Don't use warning(), which relies on current_target being set
1027 to something other than dummy_target, until after
1028 initialize_all_files(). */
1032 "warning: failed to install memory consistency checks; ");
1033 fprintf_unfiltered (gdb_stderr
,
1034 "configuration should define NO_MMCHECK or MMCHECK_FORCE\n");
1040 #endif /* Have mmalloc and want corruption checking */
1042 /* Called when a memory allocation fails, with the number of bytes of
1043 memory requested in SIZE. */
1050 internal_error (__FILE__
, __LINE__
,
1051 "virtual memory exhausted: can't allocate %ld bytes.",
1056 internal_error (__FILE__
, __LINE__
, "virtual memory exhausted.");
1060 /* The xmmalloc() family of memory management routines.
1062 These are are like the mmalloc() family except that they implement
1063 consistent semantics and guard against typical memory management
1064 problems: if a malloc fails, an internal error is thrown; if
1065 free(NULL) is called, it is ignored; if *alloc(0) is called, NULL
1068 All these routines are implemented using the mmalloc() family. */
1071 xmmalloc (void *md
, size_t size
)
1081 val
= mmalloc (md
, size
);
1089 xmrealloc (void *md
, void *ptr
, size_t size
)
1103 val
= mrealloc (md
, ptr
, size
);
1107 val
= mmalloc (md
, size
);
1118 xmcalloc (void *md
, size_t number
, size_t size
)
1121 if (number
== 0 || size
== 0)
1125 mem
= mcalloc (md
, number
, size
);
1127 nomem (number
* size
);
1133 xmfree (void *md
, void *ptr
)
1139 /* The xmalloc() (libiberty.h) family of memory management routines.
1141 These are like the ISO-C malloc() family except that they implement
1142 consistent semantics and guard against typical memory management
1143 problems. See xmmalloc() above for further information.
1145 All these routines are wrappers to the xmmalloc() family. */
1147 /* NOTE: These are declared using PTR to ensure consistency with
1148 "libiberty.h". xfree() is GDB local. */
1151 xmalloc (size_t size
)
1153 return xmmalloc (NULL
, size
);
1157 xrealloc (PTR ptr
, size_t size
) /* OK: PTR */
1159 return xmrealloc (NULL
, ptr
, size
);
1163 xcalloc (size_t number
, size_t size
)
1165 return xmcalloc (NULL
, number
, size
);
1175 /* Like asprintf/vasprintf but get an internal_error if the call
1179 xasprintf (char **ret
, const char *format
, ...)
1182 va_start (args
, format
);
1183 xvasprintf (ret
, format
, args
);
1188 xvasprintf (char **ret
, const char *format
, va_list ap
)
1190 int status
= vasprintf (ret
, format
, ap
);
1191 /* NULL could be returned due to a memory allocation problem; a
1192 badly format string; or something else. */
1194 internal_error (__FILE__
, __LINE__
,
1195 "vasprintf returned NULL buffer (errno %d)", errno
);
1196 /* A negative status with a non-NULL buffer shouldn't never
1197 happen. But to be sure. */
1199 internal_error (__FILE__
, __LINE__
,
1200 "vasprintf call failed (errno %d)", errno
);
1204 /* My replacement for the read system call.
1205 Used like `read' but keeps going if `read' returns too soon. */
1208 myread (int desc
, char *addr
, int len
)
1215 val
= read (desc
, addr
, len
);
1219 return orglen
- len
;
1226 /* Make a copy of the string at PTR with SIZE characters
1227 (and add a null character at the end in the copy).
1228 Uses malloc to get the space. Returns the address of the copy. */
1231 savestring (const char *ptr
, size_t size
)
1233 register char *p
= (char *) xmalloc (size
+ 1);
1234 memcpy (p
, ptr
, size
);
1240 msavestring (void *md
, const char *ptr
, size_t size
)
1242 register char *p
= (char *) xmmalloc (md
, size
+ 1);
1243 memcpy (p
, ptr
, size
);
1249 mstrsave (void *md
, const char *ptr
)
1251 return (msavestring (md
, ptr
, strlen (ptr
)));
1255 print_spaces (register int n
, register struct ui_file
*file
)
1257 fputs_unfiltered (n_spaces (n
), file
);
1260 /* Print a host address. */
1263 gdb_print_host_address (void *addr
, struct ui_file
*stream
)
1266 /* We could use the %p conversion specifier to fprintf if we had any
1267 way of knowing whether this host supports it. But the following
1268 should work on the Alpha and on 32 bit machines. */
1270 fprintf_filtered (stream
, "0x%lx", (unsigned long) addr
);
1273 /* Ask user a y-or-n question and return 1 iff answer is yes.
1274 Takes three args which are given to printf to print the question.
1275 The first, a control string, should end in "? ".
1276 It should not say how to answer, because we do that. */
1280 query (const char *ctlstr
, ...)
1283 register int answer
;
1287 va_start (args
, ctlstr
);
1291 return query_hook (ctlstr
, args
);
1294 /* Automatically answer "yes" if input is not from a terminal. */
1295 if (!input_from_terminal_p ())
1300 wrap_here (""); /* Flush any buffered output */
1301 gdb_flush (gdb_stdout
);
1303 if (annotation_level
> 1)
1304 printf_filtered ("\n\032\032pre-query\n");
1306 vfprintf_filtered (gdb_stdout
, ctlstr
, args
);
1307 printf_filtered ("(y or n) ");
1309 if (annotation_level
> 1)
1310 printf_filtered ("\n\032\032query\n");
1313 gdb_flush (gdb_stdout
);
1315 answer
= fgetc (stdin
);
1316 clearerr (stdin
); /* in case of C-d */
1317 if (answer
== EOF
) /* C-d */
1322 /* Eat rest of input line, to EOF or newline */
1326 ans2
= fgetc (stdin
);
1329 while (ans2
!= EOF
&& ans2
!= '\n' && ans2
!= '\r');
1343 printf_filtered ("Please answer y or n.\n");
1346 if (annotation_level
> 1)
1347 printf_filtered ("\n\032\032post-query\n");
1352 /* Print an error message saying that we couldn't make sense of a
1353 \^mumble sequence in a string or character constant. START and END
1354 indicate a substring of some larger string that contains the
1355 erroneous backslash sequence, missing the initial backslash. */
1357 no_control_char_error (const char *start
, const char *end
)
1359 int len
= end
- start
;
1360 char *copy
= alloca (end
- start
+ 1);
1362 memcpy (copy
, start
, len
);
1365 error ("There is no control character `\\%s' in the `%s' character set.",
1366 copy
, target_charset ());
1369 /* Parse a C escape sequence. STRING_PTR points to a variable
1370 containing a pointer to the string to parse. That pointer
1371 should point to the character after the \. That pointer
1372 is updated past the characters we use. The value of the
1373 escape sequence is returned.
1375 A negative value means the sequence \ newline was seen,
1376 which is supposed to be equivalent to nothing at all.
1378 If \ is followed by a null character, we return a negative
1379 value and leave the string pointer pointing at the null character.
1381 If \ is followed by 000, we return 0 and leave the string pointer
1382 after the zeros. A value of 0 does not mean end of string. */
1385 parse_escape (char **string_ptr
)
1388 register int c
= *(*string_ptr
)++;
1389 if (c_parse_backslash (c
, &target_char
))
1401 /* Remember where this escape sequence started, for reporting
1403 char *sequence_start_pos
= *string_ptr
- 1;
1405 c
= *(*string_ptr
)++;
1409 /* XXXCHARSET: What is `delete' in the host character set? */
1412 if (!host_char_to_target (c
, &target_char
))
1413 error ("There is no character corresponding to `Delete' "
1414 "in the target character set `%s'.", host_charset ());
1419 target_char
= parse_escape (string_ptr
);
1422 if (!host_char_to_target (c
, &target_char
))
1423 no_control_char_error (sequence_start_pos
, *string_ptr
);
1426 /* Now target_char is something like `c', and we want to find
1427 its control-character equivalent. */
1428 if (!target_char_to_control_char (target_char
, &target_char
))
1429 no_control_char_error (sequence_start_pos
, *string_ptr
);
1434 /* XXXCHARSET: we need to use isdigit and value-of-digit
1435 methods of the host character set here. */
1446 register int i
= c
- '0';
1447 register int count
= 0;
1450 if ((c
= *(*string_ptr
)++) >= '0' && c
<= '7')
1464 if (!host_char_to_target (c
, &target_char
))
1466 ("The escape sequence `\%c' is equivalent to plain `%c', which"
1467 " has no equivalent\n" "in the `%s' character set.", c
, c
,
1473 /* Print the character C on STREAM as part of the contents of a literal
1474 string whose delimiter is QUOTER. Note that this routine should only
1475 be call for printing things which are independent of the language
1476 of the program being debugged. */
1479 printchar (int c
, void (*do_fputs
) (const char *, struct ui_file
*),
1480 void (*do_fprintf
) (struct ui_file
*, const char *, ...),
1481 struct ui_file
*stream
, int quoter
)
1484 c
&= 0xFF; /* Avoid sign bit follies */
1486 if (c
< 0x20 || /* Low control chars */
1487 (c
>= 0x7F && c
< 0xA0) || /* DEL, High controls */
1488 (sevenbit_strings
&& c
>= 0x80))
1489 { /* high order bit set */
1493 do_fputs ("\\n", stream
);
1496 do_fputs ("\\b", stream
);
1499 do_fputs ("\\t", stream
);
1502 do_fputs ("\\f", stream
);
1505 do_fputs ("\\r", stream
);
1508 do_fputs ("\\e", stream
);
1511 do_fputs ("\\a", stream
);
1514 do_fprintf (stream
, "\\%.3o", (unsigned int) c
);
1520 if (c
== '\\' || c
== quoter
)
1521 do_fputs ("\\", stream
);
1522 do_fprintf (stream
, "%c", c
);
1526 /* Print the character C on STREAM as part of the contents of a
1527 literal string whose delimiter is QUOTER. Note that these routines
1528 should only be call for printing things which are independent of
1529 the language of the program being debugged. */
1532 fputstr_filtered (const char *str
, int quoter
, struct ui_file
*stream
)
1535 printchar (*str
++, fputs_filtered
, fprintf_filtered
, stream
, quoter
);
1539 fputstr_unfiltered (const char *str
, int quoter
, struct ui_file
*stream
)
1542 printchar (*str
++, fputs_unfiltered
, fprintf_unfiltered
, stream
, quoter
);
1546 fputstrn_unfiltered (const char *str
, int n
, int quoter
,
1547 struct ui_file
*stream
)
1550 for (i
= 0; i
< n
; i
++)
1551 printchar (str
[i
], fputs_unfiltered
, fprintf_unfiltered
, stream
, quoter
);
1556 /* Number of lines per page or UINT_MAX if paging is disabled. */
1557 static unsigned int lines_per_page
;
1558 /* Number of chars per line or UINT_MAX if line folding is disabled. */
1559 static unsigned int chars_per_line
;
1560 /* Current count of lines printed on this page, chars on this line. */
1561 static unsigned int lines_printed
, chars_printed
;
1563 /* Buffer and start column of buffered text, for doing smarter word-
1564 wrapping. When someone calls wrap_here(), we start buffering output
1565 that comes through fputs_filtered(). If we see a newline, we just
1566 spit it out and forget about the wrap_here(). If we see another
1567 wrap_here(), we spit it out and remember the newer one. If we see
1568 the end of the line, we spit out a newline, the indent, and then
1569 the buffered output. */
1571 /* Malloc'd buffer with chars_per_line+2 bytes. Contains characters which
1572 are waiting to be output (they have already been counted in chars_printed).
1573 When wrap_buffer[0] is null, the buffer is empty. */
1574 static char *wrap_buffer
;
1576 /* Pointer in wrap_buffer to the next character to fill. */
1577 static char *wrap_pointer
;
1579 /* String to indent by if the wrap occurs. Must not be NULL if wrap_column
1581 static char *wrap_indent
;
1583 /* Column number on the screen where wrap_buffer begins, or 0 if wrapping
1584 is not in effect. */
1585 static int wrap_column
;
1588 /* Inialize the lines and chars per page */
1590 init_page_info (void)
1593 if (!tui_get_command_dimension (&chars_per_line
, &lines_per_page
))
1596 /* These defaults will be used if we are unable to get the correct
1597 values from termcap. */
1598 #if defined(__GO32__)
1599 lines_per_page
= ScreenRows ();
1600 chars_per_line
= ScreenCols ();
1602 lines_per_page
= 24;
1603 chars_per_line
= 80;
1605 #if !defined (_WIN32)
1606 /* Initialize the screen height and width from termcap. */
1608 char *termtype
= getenv ("TERM");
1610 /* Positive means success, nonpositive means failure. */
1613 /* 2048 is large enough for all known terminals, according to the
1614 GNU termcap manual. */
1615 char term_buffer
[2048];
1619 status
= tgetent (term_buffer
, termtype
);
1623 int running_in_emacs
= getenv ("EMACS") != NULL
;
1625 val
= tgetnum ("li");
1626 if (val
>= 0 && !running_in_emacs
)
1627 lines_per_page
= val
;
1629 /* The number of lines per page is not mentioned
1630 in the terminal description. This probably means
1631 that paging is not useful (e.g. emacs shell window),
1632 so disable paging. */
1633 lines_per_page
= UINT_MAX
;
1635 val
= tgetnum ("co");
1637 chars_per_line
= val
;
1643 #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER)
1645 /* If there is a better way to determine the window size, use it. */
1646 SIGWINCH_HANDLER (SIGWINCH
);
1649 /* If the output is not a terminal, don't paginate it. */
1650 if (!ui_file_isatty (gdb_stdout
))
1651 lines_per_page
= UINT_MAX
;
1652 } /* the command_line_version */
1659 if (chars_per_line
== 0)
1664 wrap_buffer
= (char *) xmalloc (chars_per_line
+ 2);
1665 wrap_buffer
[0] = '\0';
1668 wrap_buffer
= (char *) xrealloc (wrap_buffer
, chars_per_line
+ 2);
1669 wrap_pointer
= wrap_buffer
; /* Start it at the beginning */
1674 set_width_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
1679 /* Wait, so the user can read what's on the screen. Prompt the user
1680 to continue by pressing RETURN. */
1683 prompt_for_continue (void)
1686 char cont_prompt
[120];
1688 if (annotation_level
> 1)
1689 printf_unfiltered ("\n\032\032pre-prompt-for-continue\n");
1691 strcpy (cont_prompt
,
1692 "---Type <return> to continue, or q <return> to quit---");
1693 if (annotation_level
> 1)
1694 strcat (cont_prompt
, "\n\032\032prompt-for-continue\n");
1696 /* We must do this *before* we call gdb_readline, else it will eventually
1697 call us -- thinking that we're trying to print beyond the end of the
1699 reinitialize_more_filter ();
1702 /* On a real operating system, the user can quit with SIGINT.
1705 'q' is provided on all systems so users don't have to change habits
1706 from system to system, and because telling them what to do in
1707 the prompt is more user-friendly than expecting them to think of
1709 /* Call readline, not gdb_readline, because GO32 readline handles control-C
1710 whereas control-C to gdb_readline will cause the user to get dumped
1712 ignore
= gdb_readline_wrapper (cont_prompt
);
1714 if (annotation_level
> 1)
1715 printf_unfiltered ("\n\032\032post-prompt-for-continue\n");
1720 while (*p
== ' ' || *p
== '\t')
1725 request_quit (SIGINT
);
1727 async_request_quit (0);
1733 /* Now we have to do this again, so that GDB will know that it doesn't
1734 need to save the ---Type <return>--- line at the top of the screen. */
1735 reinitialize_more_filter ();
1737 dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */
1740 /* Reinitialize filter; ie. tell it to reset to original values. */
1743 reinitialize_more_filter (void)
1749 /* Indicate that if the next sequence of characters overflows the line,
1750 a newline should be inserted here rather than when it hits the end.
1751 If INDENT is non-null, it is a string to be printed to indent the
1752 wrapped part on the next line. INDENT must remain accessible until
1753 the next call to wrap_here() or until a newline is printed through
1756 If the line is already overfull, we immediately print a newline and
1757 the indentation, and disable further wrapping.
1759 If we don't know the width of lines, but we know the page height,
1760 we must not wrap words, but should still keep track of newlines
1761 that were explicitly printed.
1763 INDENT should not contain tabs, as that will mess up the char count
1764 on the next line. FIXME.
1766 This routine is guaranteed to force out any output which has been
1767 squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be
1768 used to force out output from the wrap_buffer. */
1771 wrap_here (char *indent
)
1773 /* This should have been allocated, but be paranoid anyway. */
1775 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
1779 *wrap_pointer
= '\0';
1780 fputs_unfiltered (wrap_buffer
, gdb_stdout
);
1782 wrap_pointer
= wrap_buffer
;
1783 wrap_buffer
[0] = '\0';
1784 if (chars_per_line
== UINT_MAX
) /* No line overflow checking */
1788 else if (chars_printed
>= chars_per_line
)
1790 puts_filtered ("\n");
1792 puts_filtered (indent
);
1797 wrap_column
= chars_printed
;
1801 wrap_indent
= indent
;
1805 /* Print input string to gdb_stdout, filtered, with wrap,
1806 arranging strings in columns of n chars. String can be
1807 right or left justified in the column. Never prints
1808 trailing spaces. String should never be longer than
1809 width. FIXME: this could be useful for the EXAMINE
1810 command, which currently doesn't tabulate very well */
1813 puts_filtered_tabular (char *string
, int width
, int right
)
1819 gdb_assert (chars_per_line
> 0);
1820 if (chars_per_line
== UINT_MAX
)
1822 fputs_filtered (string
, gdb_stdout
);
1823 fputs_filtered ("\n", gdb_stdout
);
1827 if (((chars_printed
- 1) / width
+ 2) * width
>= chars_per_line
)
1828 fputs_filtered ("\n", gdb_stdout
);
1830 if (width
>= chars_per_line
)
1831 width
= chars_per_line
- 1;
1833 stringlen
= strlen (string
);
1835 if (chars_printed
> 0)
1836 spaces
= width
- (chars_printed
- 1) % width
- 1;
1838 spaces
+= width
- stringlen
;
1840 spacebuf
= alloca (spaces
+ 1);
1841 spacebuf
[spaces
] = '\0';
1843 spacebuf
[spaces
] = ' ';
1845 fputs_filtered (spacebuf
, gdb_stdout
);
1846 fputs_filtered (string
, gdb_stdout
);
1850 /* Ensure that whatever gets printed next, using the filtered output
1851 commands, starts at the beginning of the line. I.E. if there is
1852 any pending output for the current line, flush it and start a new
1853 line. Otherwise do nothing. */
1858 if (chars_printed
> 0)
1860 puts_filtered ("\n");
1865 /* Like fputs but if FILTER is true, pause after every screenful.
1867 Regardless of FILTER can wrap at points other than the final
1868 character of a line.
1870 Unlike fputs, fputs_maybe_filtered does not return a value.
1871 It is OK for LINEBUFFER to be NULL, in which case just don't print
1874 Note that a longjmp to top level may occur in this routine (only if
1875 FILTER is true) (since prompt_for_continue may do so) so this
1876 routine should not be called when cleanups are not in place. */
1879 fputs_maybe_filtered (const char *linebuffer
, struct ui_file
*stream
,
1882 const char *lineptr
;
1884 if (linebuffer
== 0)
1887 /* Don't do any filtering if it is disabled. */
1888 if ((stream
!= gdb_stdout
) || !pagination_enabled
1889 || (lines_per_page
== UINT_MAX
&& chars_per_line
== UINT_MAX
))
1891 fputs_unfiltered (linebuffer
, stream
);
1895 /* Go through and output each character. Show line extension
1896 when this is necessary; prompt user for new page when this is
1899 lineptr
= linebuffer
;
1902 /* Possible new page. */
1903 if (filter
&& (lines_printed
>= lines_per_page
- 1))
1904 prompt_for_continue ();
1906 while (*lineptr
&& *lineptr
!= '\n')
1908 /* Print a single line. */
1909 if (*lineptr
== '\t')
1912 *wrap_pointer
++ = '\t';
1914 fputc_unfiltered ('\t', stream
);
1915 /* Shifting right by 3 produces the number of tab stops
1916 we have already passed, and then adding one and
1917 shifting left 3 advances to the next tab stop. */
1918 chars_printed
= ((chars_printed
>> 3) + 1) << 3;
1924 *wrap_pointer
++ = *lineptr
;
1926 fputc_unfiltered (*lineptr
, stream
);
1931 if (chars_printed
>= chars_per_line
)
1933 unsigned int save_chars
= chars_printed
;
1937 /* If we aren't actually wrapping, don't output newline --
1938 if chars_per_line is right, we probably just overflowed
1939 anyway; if it's wrong, let us keep going. */
1941 fputc_unfiltered ('\n', stream
);
1943 /* Possible new page. */
1944 if (lines_printed
>= lines_per_page
- 1)
1945 prompt_for_continue ();
1947 /* Now output indentation and wrapped string */
1950 fputs_unfiltered (wrap_indent
, stream
);
1951 *wrap_pointer
= '\0'; /* Null-terminate saved stuff */
1952 fputs_unfiltered (wrap_buffer
, stream
); /* and eject it */
1953 /* FIXME, this strlen is what prevents wrap_indent from
1954 containing tabs. However, if we recurse to print it
1955 and count its chars, we risk trouble if wrap_indent is
1956 longer than (the user settable) chars_per_line.
1957 Note also that this can set chars_printed > chars_per_line
1958 if we are printing a long string. */
1959 chars_printed
= strlen (wrap_indent
)
1960 + (save_chars
- wrap_column
);
1961 wrap_pointer
= wrap_buffer
; /* Reset buffer */
1962 wrap_buffer
[0] = '\0';
1963 wrap_column
= 0; /* And disable fancy wrap */
1968 if (*lineptr
== '\n')
1971 wrap_here ((char *) 0); /* Spit out chars, cancel further wraps */
1973 fputc_unfiltered ('\n', stream
);
1980 fputs_filtered (const char *linebuffer
, struct ui_file
*stream
)
1982 fputs_maybe_filtered (linebuffer
, stream
, 1);
1986 putchar_unfiltered (int c
)
1989 ui_file_write (gdb_stdout
, &buf
, 1);
1993 /* Write character C to gdb_stdout using GDB's paging mechanism and return C.
1994 May return nonlocally. */
1997 putchar_filtered (int c
)
1999 return fputc_filtered (c
, gdb_stdout
);
2003 fputc_unfiltered (int c
, struct ui_file
*stream
)
2006 ui_file_write (stream
, &buf
, 1);
2011 fputc_filtered (int c
, struct ui_file
*stream
)
2017 fputs_filtered (buf
, stream
);
2021 /* puts_debug is like fputs_unfiltered, except it prints special
2022 characters in printable fashion. */
2025 puts_debug (char *prefix
, char *string
, char *suffix
)
2029 /* Print prefix and suffix after each line. */
2030 static int new_line
= 1;
2031 static int return_p
= 0;
2032 static char *prev_prefix
= "";
2033 static char *prev_suffix
= "";
2035 if (*string
== '\n')
2038 /* If the prefix is changing, print the previous suffix, a new line,
2039 and the new prefix. */
2040 if ((return_p
|| (strcmp (prev_prefix
, prefix
) != 0)) && !new_line
)
2042 fputs_unfiltered (prev_suffix
, gdb_stdlog
);
2043 fputs_unfiltered ("\n", gdb_stdlog
);
2044 fputs_unfiltered (prefix
, gdb_stdlog
);
2047 /* Print prefix if we printed a newline during the previous call. */
2051 fputs_unfiltered (prefix
, gdb_stdlog
);
2054 prev_prefix
= prefix
;
2055 prev_suffix
= suffix
;
2057 /* Output characters in a printable format. */
2058 while ((ch
= *string
++) != '\0')
2064 fputc_unfiltered (ch
, gdb_stdlog
);
2067 fprintf_unfiltered (gdb_stdlog
, "\\x%02x", ch
& 0xff);
2071 fputs_unfiltered ("\\\\", gdb_stdlog
);
2074 fputs_unfiltered ("\\b", gdb_stdlog
);
2077 fputs_unfiltered ("\\f", gdb_stdlog
);
2081 fputs_unfiltered ("\\n", gdb_stdlog
);
2084 fputs_unfiltered ("\\r", gdb_stdlog
);
2087 fputs_unfiltered ("\\t", gdb_stdlog
);
2090 fputs_unfiltered ("\\v", gdb_stdlog
);
2094 return_p
= ch
== '\r';
2097 /* Print suffix if we printed a newline. */
2100 fputs_unfiltered (suffix
, gdb_stdlog
);
2101 fputs_unfiltered ("\n", gdb_stdlog
);
2106 /* Print a variable number of ARGS using format FORMAT. If this
2107 information is going to put the amount written (since the last call
2108 to REINITIALIZE_MORE_FILTER or the last page break) over the page size,
2109 call prompt_for_continue to get the users permision to continue.
2111 Unlike fprintf, this function does not return a value.
2113 We implement three variants, vfprintf (takes a vararg list and stream),
2114 fprintf (takes a stream to write on), and printf (the usual).
2116 Note also that a longjmp to top level may occur in this routine
2117 (since prompt_for_continue may do so) so this routine should not be
2118 called when cleanups are not in place. */
2121 vfprintf_maybe_filtered (struct ui_file
*stream
, const char *format
,
2122 va_list args
, int filter
)
2125 struct cleanup
*old_cleanups
;
2127 xvasprintf (&linebuffer
, format
, args
);
2128 old_cleanups
= make_cleanup (xfree
, linebuffer
);
2129 fputs_maybe_filtered (linebuffer
, stream
, filter
);
2130 do_cleanups (old_cleanups
);
2135 vfprintf_filtered (struct ui_file
*stream
, const char *format
, va_list args
)
2137 vfprintf_maybe_filtered (stream
, format
, args
, 1);
2141 vfprintf_unfiltered (struct ui_file
*stream
, const char *format
, va_list args
)
2144 struct cleanup
*old_cleanups
;
2146 xvasprintf (&linebuffer
, format
, args
);
2147 old_cleanups
= make_cleanup (xfree
, linebuffer
);
2148 fputs_unfiltered (linebuffer
, stream
);
2149 do_cleanups (old_cleanups
);
2153 vprintf_filtered (const char *format
, va_list args
)
2155 vfprintf_maybe_filtered (gdb_stdout
, format
, args
, 1);
2159 vprintf_unfiltered (const char *format
, va_list args
)
2161 vfprintf_unfiltered (gdb_stdout
, format
, args
);
2165 fprintf_filtered (struct ui_file
*stream
, const char *format
, ...)
2168 va_start (args
, format
);
2169 vfprintf_filtered (stream
, format
, args
);
2174 fprintf_unfiltered (struct ui_file
*stream
, const char *format
, ...)
2177 va_start (args
, format
);
2178 vfprintf_unfiltered (stream
, format
, args
);
2182 /* Like fprintf_filtered, but prints its result indented.
2183 Called as fprintfi_filtered (spaces, stream, format, ...); */
2186 fprintfi_filtered (int spaces
, struct ui_file
*stream
, const char *format
,
2190 va_start (args
, format
);
2191 print_spaces_filtered (spaces
, stream
);
2193 vfprintf_filtered (stream
, format
, args
);
2199 printf_filtered (const char *format
, ...)
2202 va_start (args
, format
);
2203 vfprintf_filtered (gdb_stdout
, format
, args
);
2209 printf_unfiltered (const char *format
, ...)
2212 va_start (args
, format
);
2213 vfprintf_unfiltered (gdb_stdout
, format
, args
);
2217 /* Like printf_filtered, but prints it's result indented.
2218 Called as printfi_filtered (spaces, format, ...); */
2221 printfi_filtered (int spaces
, const char *format
, ...)
2224 va_start (args
, format
);
2225 print_spaces_filtered (spaces
, gdb_stdout
);
2226 vfprintf_filtered (gdb_stdout
, format
, args
);
2230 /* Easy -- but watch out!
2232 This routine is *not* a replacement for puts()! puts() appends a newline.
2233 This one doesn't, and had better not! */
2236 puts_filtered (const char *string
)
2238 fputs_filtered (string
, gdb_stdout
);
2242 puts_unfiltered (const char *string
)
2244 fputs_unfiltered (string
, gdb_stdout
);
2247 /* Return a pointer to N spaces and a null. The pointer is good
2248 until the next call to here. */
2253 static char *spaces
= 0;
2254 static int max_spaces
= -1;
2260 spaces
= (char *) xmalloc (n
+ 1);
2261 for (t
= spaces
+ n
; t
!= spaces
;)
2267 return spaces
+ max_spaces
- n
;
2270 /* Print N spaces. */
2272 print_spaces_filtered (int n
, struct ui_file
*stream
)
2274 fputs_filtered (n_spaces (n
), stream
);
2277 /* C++/ObjC demangler stuff. */
2279 /* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language
2280 LANG, using demangling args ARG_MODE, and print it filtered to STREAM.
2281 If the name is not mangled, or the language for the name is unknown, or
2282 demangling is off, the name is printed in its "raw" form. */
2285 fprintf_symbol_filtered (struct ui_file
*stream
, char *name
,
2286 enum language lang
, int arg_mode
)
2292 /* If user wants to see raw output, no problem. */
2295 fputs_filtered (name
, stream
);
2301 case language_cplus
:
2302 demangled
= cplus_demangle (name
, arg_mode
);
2305 demangled
= cplus_demangle (name
, arg_mode
| DMGL_JAVA
);
2308 /* Commented out until ObjC handling is enabled. */
2309 /*demangled = objc_demangle (name); */
2315 fputs_filtered (demangled
? demangled
: name
, stream
);
2316 if (demangled
!= NULL
)
2324 /* Do a strcmp() type operation on STRING1 and STRING2, ignoring any
2325 differences in whitespace. Returns 0 if they match, non-zero if they
2326 don't (slightly different than strcmp()'s range of return values).
2328 As an extra hack, string1=="FOO(ARGS)" matches string2=="FOO".
2329 This "feature" is useful when searching for matching C++ function names
2330 (such as if the user types 'break FOO', where FOO is a mangled C++
2334 strcmp_iw (const char *string1
, const char *string2
)
2336 while ((*string1
!= '\0') && (*string2
!= '\0'))
2338 while (isspace (*string1
))
2342 while (isspace (*string2
))
2346 if (*string1
!= *string2
)
2350 if (*string1
!= '\0')
2356 return (*string1
!= '\0' && *string1
!= '(') || (*string2
!= '\0');
2359 /* A simple comparison function with opposite semantics to strcmp. */
2362 streq (const char *lhs
, const char *rhs
)
2364 return !strcmp (lhs
, rhs
);
2370 ** Answer whether string_to_compare is a full or partial match to
2371 ** template_string. The partial match must be in sequence starting
2375 subset_compare (char *string_to_compare
, char *template_string
)
2378 if (template_string
!= (char *) NULL
&& string_to_compare
!= (char *) NULL
2379 && strlen (string_to_compare
) <= strlen (template_string
))
2382 (template_string
, string_to_compare
, strlen (string_to_compare
)) == 0);
2389 static void pagination_on_command (char *arg
, int from_tty
);
2391 pagination_on_command (char *arg
, int from_tty
)
2393 pagination_enabled
= 1;
2396 static void pagination_on_command (char *arg
, int from_tty
);
2398 pagination_off_command (char *arg
, int from_tty
)
2400 pagination_enabled
= 0;
2405 initialize_utils (void)
2407 struct cmd_list_element
*c
;
2409 c
= add_set_cmd ("width", class_support
, var_uinteger
,
2410 (char *) &chars_per_line
,
2411 "Set number of characters gdb thinks are in a line.",
2413 add_show_from_set (c
, &showlist
);
2414 set_cmd_sfunc (c
, set_width_command
);
2417 (add_set_cmd ("height", class_support
,
2418 var_uinteger
, (char *) &lines_per_page
,
2419 "Set number of lines gdb thinks are in a page.", &setlist
),
2424 /* If the output is not a terminal, don't paginate it. */
2425 if (!ui_file_isatty (gdb_stdout
))
2426 lines_per_page
= UINT_MAX
;
2428 set_width_command ((char *) NULL
, 0, c
);
2431 (add_set_cmd ("demangle", class_support
, var_boolean
,
2433 "Set demangling of encoded C++/ObjC names when displaying symbols.",
2434 &setprintlist
), &showprintlist
);
2437 (add_set_cmd ("pagination", class_support
,
2438 var_boolean
, (char *) &pagination_enabled
,
2439 "Set state of pagination.", &setlist
), &showlist
);
2443 add_com ("am", class_support
, pagination_on_command
,
2444 "Enable pagination");
2445 add_com ("sm", class_support
, pagination_off_command
,
2446 "Disable pagination");
2450 (add_set_cmd ("sevenbit-strings", class_support
, var_boolean
,
2451 (char *) &sevenbit_strings
,
2452 "Set printing of 8-bit characters in strings as \\nnn.",
2453 &setprintlist
), &showprintlist
);
2456 (add_set_cmd ("asm-demangle", class_support
, var_boolean
,
2457 (char *) &asm_demangle
,
2458 "Set demangling of C++/ObjC names in disassembly listings.",
2459 &setprintlist
), &showprintlist
);
2462 /* Machine specific function to handle SIGWINCH signal. */
2464 #ifdef SIGWINCH_HANDLER_BODY
2465 SIGWINCH_HANDLER_BODY
2467 /* print routines to handle variable size regs, etc. */
2468 /* temporary storage using circular buffer */
2474 static char buf
[NUMCELLS
][CELLSIZE
];
2475 static int cell
= 0;
2476 if (++cell
>= NUMCELLS
)
2484 return (TARGET_ADDR_BIT
/ 8 * 2);
2488 paddr (CORE_ADDR addr
)
2490 return phex (addr
, TARGET_ADDR_BIT
/ 8);
2494 paddr_nz (CORE_ADDR addr
)
2496 return phex_nz (addr
, TARGET_ADDR_BIT
/ 8);
2500 decimal2str (char *paddr_str
, char *sign
, ULONGEST addr
)
2502 /* steal code from valprint.c:print_decimal(). Should this worry
2503 about the real size of addr as the above does? */
2504 unsigned long temp
[3];
2508 temp
[i
] = addr
% (1000 * 1000 * 1000);
2509 addr
/= (1000 * 1000 * 1000);
2512 while (addr
!= 0 && i
< (sizeof (temp
) / sizeof (temp
[0])));
2516 sprintf (paddr_str
, "%s%lu", sign
, temp
[0]);
2519 sprintf (paddr_str
, "%s%lu%09lu", sign
, temp
[1], temp
[0]);
2522 sprintf (paddr_str
, "%s%lu%09lu%09lu", sign
, temp
[2], temp
[1], temp
[0]);
2525 internal_error (__FILE__
, __LINE__
,
2526 "failed internal consistency check");
2531 paddr_u (CORE_ADDR addr
)
2533 char *paddr_str
= get_cell ();
2534 decimal2str (paddr_str
, "", addr
);
2539 paddr_d (LONGEST addr
)
2541 char *paddr_str
= get_cell ();
2543 decimal2str (paddr_str
, "-", -addr
);
2545 decimal2str (paddr_str
, "", addr
);
2549 /* eliminate warning from compiler on 32-bit systems */
2550 static int thirty_two
= 32;
2553 phex (ULONGEST l
, int sizeof_l
)
2560 sprintf (str
, "%08lx%08lx",
2561 (unsigned long) (l
>> thirty_two
),
2562 (unsigned long) (l
& 0xffffffff));
2566 sprintf (str
, "%08lx", (unsigned long) l
);
2570 sprintf (str
, "%04x", (unsigned short) (l
& 0xffff));
2573 str
= phex (l
, sizeof (l
));
2580 phex_nz (ULONGEST l
, int sizeof_l
)
2587 unsigned long high
= (unsigned long) (l
>> thirty_two
);
2590 sprintf (str
, "%lx", (unsigned long) (l
& 0xffffffff));
2592 sprintf (str
, "%lx%08lx", high
, (unsigned long) (l
& 0xffffffff));
2597 sprintf (str
, "%lx", (unsigned long) l
);
2601 sprintf (str
, "%x", (unsigned short) (l
& 0xffff));
2604 str
= phex_nz (l
, sizeof (l
));
2611 /* Convert a CORE_ADDR into a string. */
2613 core_addr_to_string (const CORE_ADDR addr
)
2615 char *str
= get_cell ();
2617 strcat (str
, phex (addr
, sizeof (addr
)));
2622 core_addr_to_string_nz (const CORE_ADDR addr
)
2624 char *str
= get_cell ();
2626 strcat (str
, phex_nz (addr
, sizeof (addr
)));
2630 /* Convert a string back into a CORE_ADDR. */
2632 string_to_core_addr (const char *my_string
)
2635 if (my_string
[0] == '0' && tolower (my_string
[1]) == 'x')
2637 /* Assume that it is in decimal. */
2639 for (i
= 2; my_string
[i
] != '\0'; i
++)
2641 if (isdigit (my_string
[i
]))
2642 addr
= (my_string
[i
] - '0') + (addr
* 16);
2643 else if (isxdigit (my_string
[i
]))
2644 addr
= (tolower (my_string
[i
]) - 'a' + 0xa) + (addr
* 16);
2646 internal_error (__FILE__
, __LINE__
, "invalid hex");
2651 /* Assume that it is in decimal. */
2653 for (i
= 0; my_string
[i
] != '\0'; i
++)
2655 if (isdigit (my_string
[i
]))
2656 addr
= (my_string
[i
] - '0') + (addr
* 10);
2658 internal_error (__FILE__
, __LINE__
, "invalid decimal");
2665 gdb_realpath (const char *filename
)
2667 /* Method 1: The system has a compile time upper bound on a filename
2668 path. Use that and realpath() to canonicalize the name. This is
2669 the most common case. Note that, if there isn't a compile time
2670 upper bound, you want to avoid realpath() at all costs. */
2671 #if defined(HAVE_REALPATH)
2673 # if defined (PATH_MAX)
2675 # define USE_REALPATH
2676 # elif defined (MAXPATHLEN)
2677 char buf
[MAXPATHLEN
];
2678 # define USE_REALPATH
2680 # if defined (USE_REALPATH)
2681 const char *rp
= realpath (filename
, buf
);
2684 return xstrdup (rp
);
2687 #endif /* HAVE_REALPATH */
2689 /* Method 2: The host system (i.e., GNU) has the function
2690 canonicalize_file_name() which malloc's a chunk of memory and
2691 returns that, use that. */
2692 #if defined(HAVE_CANONICALIZE_FILE_NAME)
2694 char *rp
= canonicalize_file_name (filename
);
2696 return xstrdup (filename
);
2702 /* FIXME: cagney/2002-11-13:
2704 Method 2a: Use realpath() with a NULL buffer. Some systems, due
2705 to the problems described in in method 3, have modified their
2706 realpath() implementation so that it will allocate a buffer when
2707 NULL is passed in. Before this can be used, though, some sort of
2708 configure time test would need to be added. Otherwize the code
2709 will likely core dump. */
2711 /* Method 3: Now we're getting desperate! The system doesn't have a
2712 compile time buffer size and no alternative function. Query the
2713 OS, using pathconf(), for the buffer limit. Care is needed
2714 though, some systems do not limit PATH_MAX (return -1 for
2715 pathconf()) making it impossible to pass a correctly sized buffer
2716 to realpath() (it could always overflow). On those systems, we
2718 #if defined (HAVE_REALPATH) && defined (HAVE_UNISTD_H) && defined(HAVE_ALLOCA)
2720 /* Find out the max path size. */
2721 long path_max
= pathconf ("/", _PC_PATH_MAX
);
2724 /* PATH_MAX is bounded. */
2725 char *buf
= alloca (path_max
);
2726 char *rp
= realpath (filename
, buf
);
2727 return xstrdup (rp
? rp
: filename
);
2732 /* This system is a lost cause, just dup the buffer. */
2733 return xstrdup (filename
);
2736 /* Return a copy of FILENAME, with its directory prefix canonicalized
2740 xfullpath (const char *filename
)
2742 const char *base_name
= lbasename (filename
);
2747 /* Extract the basename of filename, and return immediately
2748 a copy of filename if it does not contain any directory prefix. */
2749 if (base_name
== filename
)
2750 return xstrdup (filename
);
2752 dir_name
= alloca ((size_t) (base_name
- filename
+ 2));
2753 /* Allocate enough space to store the dir_name + plus one extra
2754 character sometimes needed under Windows (see below), and
2755 then the closing \000 character */
2756 strncpy (dir_name
, filename
, base_name
- filename
);
2757 dir_name
[base_name
- filename
] = '\000';
2759 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
2760 /* We need to be careful when filename is of the form 'd:foo', which
2761 is equivalent of d:./foo, which is totally different from d:/foo. */
2762 if (strlen (dir_name
) == 2 && isalpha (dir_name
[0]) && dir_name
[1] == ':')
2765 dir_name
[3] = '\000';
2769 /* Canonicalize the directory prefix, and build the resulting
2770 filename. If the dirname realpath already contains an ending
2771 directory separator, avoid doubling it. */
2772 real_path
= gdb_realpath (dir_name
);
2773 if (IS_DIR_SEPARATOR (real_path
[strlen (real_path
) - 1]))
2774 result
= concat (real_path
, base_name
, NULL
);
2776 result
= concat (real_path
, SLASH_STRING
, base_name
, NULL
);
2783 /* This is the 32-bit CRC function used by the GNU separate debug
2784 facility. An executable may contain a section named
2785 .gnu_debuglink, which holds the name of a separate executable file
2786 containing its debug info, and a checksum of that file's contents,
2787 computed using this function. */
2789 gnu_debuglink_crc32 (unsigned long crc
, unsigned char *buf
, size_t len
)
2791 static const unsigned long crc32_table
[256] = {
2792 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419,
2793 0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4,
2794 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07,
2795 0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,
2796 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856,
2797 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
2798 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4,
2799 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
2800 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3,
2801 0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a,
2802 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599,
2803 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
2804 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190,
2805 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f,
2806 0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e,
2807 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
2808 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed,
2809 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
2810 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3,
2811 0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2,
2812 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a,
2813 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5,
2814 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010,
2815 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
2816 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17,
2817 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6,
2818 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615,
2819 0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,
2820 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344,
2821 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
2822 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a,
2823 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
2824 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1,
2825 0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c,
2826 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef,
2827 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
2828 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe,
2829 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31,
2830 0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c,
2831 0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
2832 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b,
2833 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
2834 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1,
2835 0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,
2836 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278,
2837 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7,
2838 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66,
2839 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
2840 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605,
2841 0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8,
2842 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b,
2847 crc
= ~crc
& 0xffffffff;
2848 for (end
= buf
+ len
; buf
< end
; ++buf
)
2849 crc
= crc32_table
[(crc
^ *buf
) & 0xff] ^ (crc
>> 8);
2850 return ~crc
& 0xffffffff;;