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, 2004 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"
31 #include "tui/tui.h" /* For tui_get_command_dimension. */
38 /* SunOS's curses.h has a '#define reg register' in it. Thank you Sun. */
49 #include "expression.h"
53 #include "filenames.h"
55 #include "inferior.h" /* for signed_pointer_to_address */
57 #include <sys/param.h> /* For MAXPATHLEN */
66 #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 (*deprecated_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 static void do_my_cleanups (struct cleanup **, struct cleanup *);
101 static void prompt_for_continue (void);
103 static void set_screen_size (void);
104 static void set_width (void);
106 /* Chain of cleanup actions established with make_cleanup,
107 to be executed if an error happens. */
109 static struct cleanup *cleanup_chain; /* cleaned up after a failed command */
110 static struct cleanup *final_cleanup_chain; /* cleaned up when gdb exits */
111 static struct cleanup *run_cleanup_chain; /* cleaned up on each 'run' */
112 static struct cleanup *exec_cleanup_chain; /* cleaned up on each execution command */
113 /* cleaned up on each error from within an execution command */
114 static struct cleanup *exec_error_cleanup_chain;
116 /* Pointer to what is left to do for an execution command after the
117 target stops. Used only in asynchronous mode, by targets that
118 support async execution. The finish and until commands use it. So
119 does the target extended-remote command. */
120 struct continuation *cmd_continuation;
121 struct continuation *intermediate_continuation;
123 /* Nonzero if we have job control. */
127 /* Nonzero means a quit has been requested. */
131 /* Nonzero means quit immediately if Control-C is typed now, rather
132 than waiting until QUIT is executed. Be careful in setting this;
133 code which executes with immediate_quit set has to be very careful
134 about being able to deal with being interrupted at any time. It is
135 almost always better to use QUIT; the only exception I can think of
136 is being able to quit out of a system call (using EINTR loses if
137 the SIGINT happens between the previous QUIT and the system call).
138 To immediately quit in the case in which a SIGINT happens between
139 the previous QUIT and setting immediate_quit (desirable anytime we
140 expect to block), call QUIT after setting immediate_quit. */
144 /* Nonzero means that encoded C++/ObjC names should be printed out in their
145 C++/ObjC form rather than raw. */
149 /* Nonzero means that encoded C++/ObjC names should be printed out in their
150 C++/ObjC form even in assembler language displays. If this is set, but
151 DEMANGLE is zero, names are printed raw, i.e. DEMANGLE controls. */
153 int asm_demangle = 0;
155 /* Nonzero means that strings with character values >0x7F should be printed
156 as octal escapes. Zero means just print the value (e.g. it's an
157 international character, and the terminal or window can cope.) */
159 int sevenbit_strings = 0;
161 /* String to be printed before error messages, if any. */
163 char *error_pre_print;
165 /* String to be printed before quit messages, if any. */
167 char *quit_pre_print;
169 /* String to be printed before warning messages, if any. */
171 char *warning_pre_print = "\nwarning: ";
173 int pagination_enabled = 1;
176 /* Add a new cleanup to the cleanup_chain,
177 and return the previous chain pointer
178 to be passed later to do_cleanups or discard_cleanups.
179 Args are FUNCTION to clean up with, and ARG to pass to it. */
182 make_cleanup (make_cleanup_ftype *function, void *arg)
184 return make_my_cleanup (&cleanup_chain, function, arg);
188 make_final_cleanup (make_cleanup_ftype *function, void *arg)
190 return make_my_cleanup (&final_cleanup_chain, function, arg);
194 make_run_cleanup (make_cleanup_ftype *function, void *arg)
196 return make_my_cleanup (&run_cleanup_chain, function, arg);
200 make_exec_cleanup (make_cleanup_ftype *function, void *arg)
202 return make_my_cleanup (&exec_cleanup_chain, function, arg);
206 make_exec_error_cleanup (make_cleanup_ftype *function, void *arg)
208 return make_my_cleanup (&exec_error_cleanup_chain, function, arg);
212 do_freeargv (void *arg)
214 freeargv ((char **) arg);
218 make_cleanup_freeargv (char **arg)
220 return make_my_cleanup (&cleanup_chain, do_freeargv, arg);
224 do_bfd_close_cleanup (void *arg)
230 make_cleanup_bfd_close (bfd *abfd)
232 return make_cleanup (do_bfd_close_cleanup, abfd);
236 do_close_cleanup (void *arg)
244 make_cleanup_close (int fd)
246 int *saved_fd = xmalloc (sizeof (fd));
248 return make_cleanup (do_close_cleanup, saved_fd);
252 do_ui_file_delete (void *arg)
254 ui_file_delete (arg);
258 make_cleanup_ui_file_delete (struct ui_file *arg)
260 return make_my_cleanup (&cleanup_chain, do_ui_file_delete, arg);
264 make_my_cleanup (struct cleanup **pmy_chain, make_cleanup_ftype *function,
268 = (struct cleanup *) xmalloc (sizeof (struct cleanup));
269 struct cleanup *old_chain = *pmy_chain;
271 new->next = *pmy_chain;
272 new->function = function;
279 /* Discard cleanups and do the actions they describe
280 until we get back to the point OLD_CHAIN in the cleanup_chain. */
283 do_cleanups (struct cleanup *old_chain)
285 do_my_cleanups (&cleanup_chain, old_chain);
289 do_final_cleanups (struct cleanup *old_chain)
291 do_my_cleanups (&final_cleanup_chain, old_chain);
295 do_run_cleanups (struct cleanup *old_chain)
297 do_my_cleanups (&run_cleanup_chain, old_chain);
301 do_exec_cleanups (struct cleanup *old_chain)
303 do_my_cleanups (&exec_cleanup_chain, old_chain);
307 do_exec_error_cleanups (struct cleanup *old_chain)
309 do_my_cleanups (&exec_error_cleanup_chain, old_chain);
313 do_my_cleanups (struct cleanup **pmy_chain,
314 struct cleanup *old_chain)
317 while ((ptr = *pmy_chain) != old_chain)
319 *pmy_chain = ptr->next; /* Do this first incase recursion */
320 (*ptr->function) (ptr->arg);
325 /* Discard cleanups, not doing the actions they describe,
326 until we get back to the point OLD_CHAIN in the cleanup_chain. */
329 discard_cleanups (struct cleanup *old_chain)
331 discard_my_cleanups (&cleanup_chain, old_chain);
335 discard_final_cleanups (struct cleanup *old_chain)
337 discard_my_cleanups (&final_cleanup_chain, old_chain);
341 discard_exec_error_cleanups (struct cleanup *old_chain)
343 discard_my_cleanups (&exec_error_cleanup_chain, old_chain);
347 discard_my_cleanups (struct cleanup **pmy_chain,
348 struct cleanup *old_chain)
351 while ((ptr = *pmy_chain) != old_chain)
353 *pmy_chain = ptr->next;
358 /* Set the cleanup_chain to 0, and return the old cleanup chain. */
362 return save_my_cleanups (&cleanup_chain);
366 save_final_cleanups (void)
368 return save_my_cleanups (&final_cleanup_chain);
372 save_my_cleanups (struct cleanup **pmy_chain)
374 struct cleanup *old_chain = *pmy_chain;
380 /* Restore the cleanup chain from a previously saved chain. */
382 restore_cleanups (struct cleanup *chain)
384 restore_my_cleanups (&cleanup_chain, chain);
388 restore_final_cleanups (struct cleanup *chain)
390 restore_my_cleanups (&final_cleanup_chain, chain);
394 restore_my_cleanups (struct cleanup **pmy_chain, struct cleanup *chain)
399 /* This function is useful for cleanups.
403 old_chain = make_cleanup (free_current_contents, &foo);
405 to arrange to free the object thus allocated. */
408 free_current_contents (void *ptr)
410 void **location = ptr;
411 if (location == NULL)
412 internal_error (__FILE__, __LINE__,
413 "free_current_contents: NULL pointer");
414 if (*location != NULL)
421 /* Provide a known function that does nothing, to use as a base for
422 for a possibly long chain of cleanups. This is useful where we
423 use the cleanup chain for handling normal cleanups as well as dealing
424 with cleanups that need to be done as a result of a call to error().
425 In such cases, we may not be certain where the first cleanup is, unless
426 we have a do-nothing one to always use as the base. */
429 null_cleanup (void *arg)
433 /* Add a continuation to the continuation list, the global list
434 cmd_continuation. The new continuation will be added at the front.*/
436 add_continuation (void (*continuation_hook) (struct continuation_arg *),
437 struct continuation_arg *arg_list)
439 struct continuation *continuation_ptr;
442 (struct continuation *) xmalloc (sizeof (struct continuation));
443 continuation_ptr->continuation_hook = continuation_hook;
444 continuation_ptr->arg_list = arg_list;
445 continuation_ptr->next = cmd_continuation;
446 cmd_continuation = continuation_ptr;
449 /* Walk down the cmd_continuation list, and execute all the
450 continuations. There is a problem though. In some cases new
451 continuations may be added while we are in the middle of this
452 loop. If this happens they will be added in the front, and done
453 before we have a chance of exhausting those that were already
454 there. We need to then save the beginning of the list in a pointer
455 and do the continuations from there on, instead of using the
456 global beginning of list as our iteration pointer.*/
458 do_all_continuations (void)
460 struct continuation *continuation_ptr;
461 struct continuation *saved_continuation;
463 /* Copy the list header into another pointer, and set the global
464 list header to null, so that the global list can change as a side
465 effect of invoking the continuations and the processing of
466 the preexisting continuations will not be affected. */
467 continuation_ptr = cmd_continuation;
468 cmd_continuation = NULL;
470 /* Work now on the list we have set aside. */
471 while (continuation_ptr)
473 (continuation_ptr->continuation_hook) (continuation_ptr->arg_list);
474 saved_continuation = continuation_ptr;
475 continuation_ptr = continuation_ptr->next;
476 xfree (saved_continuation);
480 /* Walk down the cmd_continuation list, and get rid of all the
483 discard_all_continuations (void)
485 struct continuation *continuation_ptr;
487 while (cmd_continuation)
489 continuation_ptr = cmd_continuation;
490 cmd_continuation = continuation_ptr->next;
491 xfree (continuation_ptr);
495 /* Add a continuation to the continuation list, the global list
496 intermediate_continuation. The new continuation will be added at the front.*/
498 add_intermediate_continuation (void (*continuation_hook)
499 (struct continuation_arg *),
500 struct continuation_arg *arg_list)
502 struct continuation *continuation_ptr;
505 (struct continuation *) xmalloc (sizeof (struct continuation));
506 continuation_ptr->continuation_hook = continuation_hook;
507 continuation_ptr->arg_list = arg_list;
508 continuation_ptr->next = intermediate_continuation;
509 intermediate_continuation = continuation_ptr;
512 /* Walk down the cmd_continuation list, and execute all the
513 continuations. There is a problem though. In some cases new
514 continuations may be added while we are in the middle of this
515 loop. If this happens they will be added in the front, and done
516 before we have a chance of exhausting those that were already
517 there. We need to then save the beginning of the list in a pointer
518 and do the continuations from there on, instead of using the
519 global beginning of list as our iteration pointer.*/
521 do_all_intermediate_continuations (void)
523 struct continuation *continuation_ptr;
524 struct continuation *saved_continuation;
526 /* Copy the list header into another pointer, and set the global
527 list header to null, so that the global list can change as a side
528 effect of invoking the continuations and the processing of
529 the preexisting continuations will not be affected. */
530 continuation_ptr = intermediate_continuation;
531 intermediate_continuation = NULL;
533 /* Work now on the list we have set aside. */
534 while (continuation_ptr)
536 (continuation_ptr->continuation_hook) (continuation_ptr->arg_list);
537 saved_continuation = continuation_ptr;
538 continuation_ptr = continuation_ptr->next;
539 xfree (saved_continuation);
543 /* Walk down the cmd_continuation list, and get rid of all the
546 discard_all_intermediate_continuations (void)
548 struct continuation *continuation_ptr;
550 while (intermediate_continuation)
552 continuation_ptr = intermediate_continuation;
553 intermediate_continuation = continuation_ptr->next;
554 xfree (continuation_ptr);
560 /* Print a warning message. The first argument STRING is the warning
561 message, used as an fprintf format string, the second is the
562 va_list of arguments for that string. A warning is unfiltered (not
563 paginated) so that the user does not need to page through each
564 screen full of warnings when there are lots of them. */
567 vwarning (const char *string, va_list args)
569 if (deprecated_warning_hook)
570 (*deprecated_warning_hook) (string, args);
573 target_terminal_ours ();
574 wrap_here (""); /* Force out any buffered output */
575 gdb_flush (gdb_stdout);
576 if (warning_pre_print)
577 fputs_unfiltered (warning_pre_print, gdb_stderr);
578 vfprintf_unfiltered (gdb_stderr, string, args);
579 fprintf_unfiltered (gdb_stderr, "\n");
584 /* Print a warning message.
585 The first argument STRING is the warning message, used as a fprintf string,
586 and the remaining args are passed as arguments to it.
587 The primary difference between warnings and errors is that a warning
588 does not force the return to command level. */
591 warning (const char *string, ...)
594 va_start (args, string);
595 vwarning (string, args);
599 /* Print an error message and return to command level.
600 The first argument STRING is the error message, used as a fprintf string,
601 and the remaining args are passed as arguments to it. */
604 verror (const char *string, va_list args)
606 struct ui_file *tmp_stream = mem_fileopen ();
607 make_cleanup_ui_file_delete (tmp_stream);
608 vfprintf_unfiltered (tmp_stream, string, args);
609 error_stream (tmp_stream);
613 error (const char *string, ...)
616 va_start (args, string);
617 verror (string, args);
622 do_write (void *data, const char *buffer, long length_buffer)
624 ui_file_write (data, buffer, length_buffer);
627 /* Cause a silent error to occur. Any error message is recorded
628 though it is not issued. */
630 error_silent (const char *string, ...)
633 struct ui_file *tmp_stream = mem_fileopen ();
634 va_start (args, string);
635 make_cleanup_ui_file_delete (tmp_stream);
636 vfprintf_unfiltered (tmp_stream, string, args);
637 /* Copy the stream into the GDB_LASTERR buffer. */
638 ui_file_rewind (gdb_lasterr);
639 ui_file_put (tmp_stream, do_write, gdb_lasterr);
642 throw_exception (RETURN_ERROR);
645 /* Output an error message including any pre-print text to gdb_stderr. */
647 error_output_message (char *pre_print, char *msg)
649 target_terminal_ours ();
650 wrap_here (""); /* Force out any buffered output */
651 gdb_flush (gdb_stdout);
652 annotate_error_begin ();
654 fputs_filtered (pre_print, gdb_stderr);
655 fputs_filtered (msg, gdb_stderr);
656 fprintf_filtered (gdb_stderr, "\n");
660 error_stream (struct ui_file *stream)
662 if (deprecated_error_begin_hook)
663 deprecated_error_begin_hook ();
665 /* Copy the stream into the GDB_LASTERR buffer. */
666 ui_file_rewind (gdb_lasterr);
667 ui_file_put (stream, do_write, gdb_lasterr);
669 /* Write the message plus any error_pre_print to gdb_stderr. */
670 target_terminal_ours ();
671 wrap_here (""); /* Force out any buffered output */
672 gdb_flush (gdb_stdout);
673 annotate_error_begin ();
675 fputs_filtered (error_pre_print, gdb_stderr);
676 ui_file_put (stream, do_write, gdb_stderr);
677 fprintf_filtered (gdb_stderr, "\n");
679 throw_exception (RETURN_ERROR);
682 /* Get the last error message issued by gdb */
685 error_last_message (void)
688 return ui_file_xstrdup (gdb_lasterr, &len);
691 /* This is to be called by main() at the very beginning */
696 gdb_lasterr = mem_fileopen ();
699 /* Print a message reporting an internal error/warning. Ask the user
700 if they want to continue, dump core, or just exit. Return
701 something to indicate a quit. */
703 struct internal_problem
706 /* FIXME: cagney/2002-08-15: There should be ``maint set/show''
707 commands available for controlling these variables. */
708 enum auto_boolean should_quit;
709 enum auto_boolean should_dump_core;
712 /* Report a problem, internal to GDB, to the user. Once the problem
713 has been reported, and assuming GDB didn't quit, the caller can
714 either allow execution to resume or throw an error. */
717 internal_vproblem (struct internal_problem *problem,
718 const char *file, int line, const char *fmt, va_list ap)
725 /* Don't allow infinite error/warning recursion. */
727 static char msg[] = "Recursive internal problem.\n";
735 fputs_unfiltered (msg, gdb_stderr);
736 abort (); /* NOTE: GDB has only three calls to abort(). */
739 write (STDERR_FILENO, msg, sizeof (msg));
744 /* Try to get the message out and at the start of a new line. */
745 target_terminal_ours ();
748 /* Create a string containing the full error/warning message. Need
749 to call query with this full string, as otherwize the reason
750 (error/warning) and question become separated. Format using a
751 style similar to a compiler error message. Include extra detail
752 so that the user knows that they are living on the edge. */
755 xvasprintf (&msg, fmt, ap);
756 reason = xstrprintf ("\
758 A problem internal to GDB has been detected,\n\
759 further debugging may prove unreliable.", file, line, problem->name, msg);
761 make_cleanup (xfree, reason);
764 switch (problem->should_quit)
766 case AUTO_BOOLEAN_AUTO:
767 /* Default (yes/batch case) is to quit GDB. When in batch mode
768 this lessens the likelhood of GDB going into an infinate
770 quit_p = query ("%s\nQuit this debugging session? ", reason);
772 case AUTO_BOOLEAN_TRUE:
775 case AUTO_BOOLEAN_FALSE:
779 internal_error (__FILE__, __LINE__, "bad switch");
782 switch (problem->should_dump_core)
784 case AUTO_BOOLEAN_AUTO:
785 /* Default (yes/batch case) is to dump core. This leaves a GDB
786 `dropping' so that it is easier to see that something went
788 dump_core_p = query ("%s\nCreate a core file of GDB? ", reason);
791 case AUTO_BOOLEAN_TRUE:
794 case AUTO_BOOLEAN_FALSE:
798 internal_error (__FILE__, __LINE__, "bad switch");
804 abort (); /* NOTE: GDB has only three calls to abort(). */
813 abort (); /* NOTE: GDB has only three calls to abort(). */
820 static struct internal_problem internal_error_problem = {
821 "internal-error", AUTO_BOOLEAN_AUTO, AUTO_BOOLEAN_AUTO
825 internal_verror (const char *file, int line, const char *fmt, va_list ap)
827 internal_vproblem (&internal_error_problem, file, line, fmt, ap);
828 throw_exception (RETURN_ERROR);
832 internal_error (const char *file, int line, const char *string, ...)
835 va_start (ap, string);
836 internal_verror (file, line, string, ap);
840 static struct internal_problem internal_warning_problem = {
841 "internal-error", AUTO_BOOLEAN_AUTO, AUTO_BOOLEAN_AUTO
845 internal_vwarning (const char *file, int line, const char *fmt, va_list ap)
847 internal_vproblem (&internal_warning_problem, file, line, fmt, ap);
851 internal_warning (const char *file, int line, const char *string, ...)
854 va_start (ap, string);
855 internal_vwarning (file, line, string, ap);
859 /* The strerror() function can return NULL for errno values that are
860 out of range. Provide a "safe" version that always returns a
864 safe_strerror (int errnum)
869 msg = strerror (errnum);
872 sprintf (buf, "(undocumented errno %d)", errnum);
878 /* Print the system error message for errno, and also mention STRING
879 as the file name for which the error was encountered.
880 Then return to command level. */
883 perror_with_name (const char *string)
888 err = safe_strerror (errno);
889 combined = (char *) alloca (strlen (err) + strlen (string) + 3);
890 strcpy (combined, string);
891 strcat (combined, ": ");
892 strcat (combined, err);
894 /* I understand setting these is a matter of taste. Still, some people
895 may clear errno but not know about bfd_error. Doing this here is not
897 bfd_set_error (bfd_error_no_error);
900 error ("%s.", combined);
903 /* Print the system error message for ERRCODE, and also mention STRING
904 as the file name for which the error was encountered. */
907 print_sys_errmsg (const char *string, int errcode)
912 err = safe_strerror (errcode);
913 combined = (char *) alloca (strlen (err) + strlen (string) + 3);
914 strcpy (combined, string);
915 strcat (combined, ": ");
916 strcat (combined, err);
918 /* We want anything which was printed on stdout to come out first, before
920 gdb_flush (gdb_stdout);
921 fprintf_unfiltered (gdb_stderr, "%s.\n", combined);
924 /* Control C eventually causes this to be called, at a convenient time. */
929 struct serial *gdb_stdout_serial = serial_fdopen (1);
931 target_terminal_ours ();
933 /* We want all output to appear now, before we print "Quit". We
934 have 3 levels of buffering we have to flush (it's possible that
935 some of these should be changed to flush the lower-level ones
938 /* 1. The _filtered buffer. */
939 wrap_here ((char *) 0);
941 /* 2. The stdio buffer. */
942 gdb_flush (gdb_stdout);
943 gdb_flush (gdb_stderr);
945 /* 3. The system-level buffer. */
946 serial_drain_output (gdb_stdout_serial);
947 serial_un_fdopen (gdb_stdout_serial);
949 annotate_error_begin ();
951 /* Don't use *_filtered; we don't want to prompt the user to continue. */
953 fputs_unfiltered (quit_pre_print, gdb_stderr);
956 /* No steenking SIGINT will ever be coming our way when the
957 program is resumed. Don't lie. */
958 fprintf_unfiltered (gdb_stderr, "Quit\n");
961 /* If there is no terminal switching for this target, then we can't
962 possibly get screwed by the lack of job control. */
963 || current_target.to_terminal_ours == NULL)
964 fprintf_unfiltered (gdb_stderr, "Quit\n");
966 fprintf_unfiltered (gdb_stderr,
967 "Quit (expect signal SIGINT when the program is resumed)\n");
969 throw_exception (RETURN_QUIT);
972 /* Control C comes here */
974 request_quit (int signo)
977 /* Restore the signal handler. Harmless with BSD-style signals, needed
978 for System V-style signals. So just always do it, rather than worrying
979 about USG defines and stuff like that. */
980 signal (signo, request_quit);
986 /* Memory management stuff (malloc friends). */
989 mmalloc (void *md, size_t size)
991 return malloc (size); /* NOTE: GDB's only call to malloc() */
995 mrealloc (void *md, void *ptr, size_t size)
997 if (ptr == 0) /* Guard against old realloc's */
998 return mmalloc (md, size);
1000 return realloc (ptr, size); /* NOTE: GDB's only call to ralloc() */
1004 mcalloc (void *md, size_t number, size_t size)
1006 return calloc (number, size); /* NOTE: GDB's only call to calloc() */
1010 mfree (void *md, void *ptr)
1012 free (ptr); /* NOTE: GDB's only call to free() */
1015 /* This used to do something interesting with USE_MMALLOC.
1016 * It can be retired any time. -- chastain 2004-01-19. */
1018 init_malloc (void *md)
1022 /* Called when a memory allocation fails, with the number of bytes of
1023 memory requested in SIZE. */
1030 internal_error (__FILE__, __LINE__,
1031 "virtual memory exhausted: can't allocate %ld bytes.",
1036 internal_error (__FILE__, __LINE__, "virtual memory exhausted.");
1040 /* The xmmalloc() family of memory management routines.
1042 These are are like the mmalloc() family except that they implement
1043 consistent semantics and guard against typical memory management
1044 problems: if a malloc fails, an internal error is thrown; if
1045 free(NULL) is called, it is ignored; if *alloc(0) is called, NULL
1048 All these routines are implemented using the mmalloc() family. */
1051 xmmalloc (void *md, size_t size)
1055 /* See libiberty/xmalloc.c. This function need's to match that's
1056 semantics. It never returns NULL. */
1060 val = mmalloc (md, size);
1068 xmrealloc (void *md, void *ptr, size_t size)
1072 /* See libiberty/xmalloc.c. This function need's to match that's
1073 semantics. It never returns NULL. */
1078 val = mrealloc (md, ptr, size);
1080 val = mmalloc (md, size);
1088 xmcalloc (void *md, size_t number, size_t size)
1092 /* See libiberty/xmalloc.c. This function need's to match that's
1093 semantics. It never returns NULL. */
1094 if (number == 0 || size == 0)
1100 mem = mcalloc (md, number, size);
1102 nomem (number * size);
1108 xmfree (void *md, void *ptr)
1114 /* The xmalloc() (libiberty.h) family of memory management routines.
1116 These are like the ISO-C malloc() family except that they implement
1117 consistent semantics and guard against typical memory management
1118 problems. See xmmalloc() above for further information.
1120 All these routines are wrappers to the xmmalloc() family. */
1122 /* NOTE: These are declared using PTR to ensure consistency with
1123 "libiberty.h". xfree() is GDB local. */
1126 xmalloc (size_t size)
1128 return xmmalloc (NULL, size);
1132 xrealloc (PTR ptr, size_t size) /* OK: PTR */
1134 return xmrealloc (NULL, ptr, size);
1138 xcalloc (size_t number, size_t size)
1140 return xmcalloc (NULL, number, size);
1150 /* Like asprintf/vasprintf but get an internal_error if the call
1154 xstrprintf (const char *format, ...)
1158 va_start (args, format);
1159 xvasprintf (&ret, format, args);
1165 xasprintf (char **ret, const char *format, ...)
1168 va_start (args, format);
1169 xvasprintf (ret, format, args);
1174 xvasprintf (char **ret, const char *format, va_list ap)
1176 int status = vasprintf (ret, format, ap);
1177 /* NULL could be returned due to a memory allocation problem; a
1178 badly format string; or something else. */
1180 internal_error (__FILE__, __LINE__,
1181 "vasprintf returned NULL buffer (errno %d)", errno);
1182 /* A negative status with a non-NULL buffer shouldn't never
1183 happen. But to be sure. */
1185 internal_error (__FILE__, __LINE__,
1186 "vasprintf call failed (errno %d)", errno);
1190 /* My replacement for the read system call.
1191 Used like `read' but keeps going if `read' returns too soon. */
1194 myread (int desc, char *addr, int len)
1201 val = read (desc, addr, len);
1205 return orglen - len;
1212 /* Make a copy of the string at PTR with SIZE characters
1213 (and add a null character at the end in the copy).
1214 Uses malloc to get the space. Returns the address of the copy. */
1217 savestring (const char *ptr, size_t size)
1219 char *p = (char *) xmalloc (size + 1);
1220 memcpy (p, ptr, size);
1226 msavestring (void *md, const char *ptr, size_t size)
1228 char *p = (char *) xmmalloc (md, size + 1);
1229 memcpy (p, ptr, size);
1235 mstrsave (void *md, const char *ptr)
1237 return (msavestring (md, ptr, strlen (ptr)));
1241 print_spaces (int n, struct ui_file *file)
1243 fputs_unfiltered (n_spaces (n), file);
1246 /* Print a host address. */
1249 gdb_print_host_address (const void *addr, struct ui_file *stream)
1252 /* We could use the %p conversion specifier to fprintf if we had any
1253 way of knowing whether this host supports it. But the following
1254 should work on the Alpha and on 32 bit machines. */
1256 fprintf_filtered (stream, "0x%lx", (unsigned long) addr);
1259 /* Ask user a y-or-n question and return 1 iff answer is yes.
1260 Takes three args which are given to printf to print the question.
1261 The first, a control string, should end in "? ".
1262 It should not say how to answer, because we do that. */
1266 query (const char *ctlstr, ...)
1273 if (deprecated_query_hook)
1275 va_start (args, ctlstr);
1276 return deprecated_query_hook (ctlstr, args);
1279 /* Automatically answer "yes" if input is not from a terminal. */
1280 if (!input_from_terminal_p ())
1285 wrap_here (""); /* Flush any buffered output */
1286 gdb_flush (gdb_stdout);
1288 if (annotation_level > 1)
1289 printf_filtered ("\n\032\032pre-query\n");
1291 va_start (args, ctlstr);
1292 vfprintf_filtered (gdb_stdout, ctlstr, args);
1294 printf_filtered ("(y or n) ");
1296 if (annotation_level > 1)
1297 printf_filtered ("\n\032\032query\n");
1300 gdb_flush (gdb_stdout);
1302 answer = fgetc (stdin);
1303 clearerr (stdin); /* in case of C-d */
1304 if (answer == EOF) /* C-d */
1309 /* Eat rest of input line, to EOF or newline */
1313 ans2 = fgetc (stdin);
1316 while (ans2 != EOF && ans2 != '\n' && ans2 != '\r');
1330 printf_filtered ("Please answer y or n.\n");
1333 if (annotation_level > 1)
1334 printf_filtered ("\n\032\032post-query\n");
1339 /* This function supports the nquery() and yquery() functions.
1340 Ask user a y-or-n question and return 0 if answer is no, 1 if
1341 answer is yes, or default the answer to the specified default.
1342 DEFCHAR is either 'y' or 'n' and refers to the default answer.
1343 CTLSTR is the control string and should end in "? ". It should
1344 not say how to answer, because we do that.
1345 ARGS are the arguments passed along with the CTLSTR argument to
1349 defaulted_query (const char *ctlstr, const char defchar, va_list args)
1355 char def_answer, not_def_answer;
1356 char *y_string, *n_string;
1358 /* Set up according to which answer is the default. */
1363 not_def_answer = 'N';
1371 not_def_answer = 'Y';
1376 if (deprecated_query_hook)
1378 return deprecated_query_hook (ctlstr, args);
1381 /* Automatically answer default value if input is not from a terminal. */
1382 if (!input_from_terminal_p ())
1387 wrap_here (""); /* Flush any buffered output */
1388 gdb_flush (gdb_stdout);
1390 if (annotation_level > 1)
1391 printf_filtered ("\n\032\032pre-query\n");
1393 vfprintf_filtered (gdb_stdout, ctlstr, args);
1394 printf_filtered ("(%s or %s) ", y_string, n_string);
1396 if (annotation_level > 1)
1397 printf_filtered ("\n\032\032query\n");
1400 gdb_flush (gdb_stdout);
1402 answer = fgetc (stdin);
1403 clearerr (stdin); /* in case of C-d */
1404 if (answer == EOF) /* C-d */
1409 /* Eat rest of input line, to EOF or newline */
1413 ans2 = fgetc (stdin);
1416 while (ans2 != EOF && ans2 != '\n' && ans2 != '\r');
1420 /* Check answer. For the non-default, the user must specify
1421 the non-default explicitly. */
1422 if (answer == not_def_answer)
1424 retval = !def_value;
1427 /* Otherwise, for the default, the user may either specify
1428 the required input or have it default by entering nothing. */
1429 if (answer == def_answer || answer == '\n' ||
1430 answer == '\r' || answer == EOF)
1435 /* Invalid entries are not defaulted and require another selection. */
1436 printf_filtered ("Please answer %s or %s.\n",
1437 y_string, n_string);
1440 if (annotation_level > 1)
1441 printf_filtered ("\n\032\032post-query\n");
1446 /* Ask user a y-or-n question and return 0 if answer is no, 1 if
1447 answer is yes, or 0 if answer is defaulted.
1448 Takes three args which are given to printf to print the question.
1449 The first, a control string, should end in "? ".
1450 It should not say how to answer, because we do that. */
1453 nquery (const char *ctlstr, ...)
1457 va_start (args, ctlstr);
1458 return defaulted_query (ctlstr, 'n', args);
1462 /* Ask user a y-or-n question and return 0 if answer is no, 1 if
1463 answer is yes, or 1 if answer is defaulted.
1464 Takes three args which are given to printf to print the question.
1465 The first, a control string, should end in "? ".
1466 It should not say how to answer, because we do that. */
1469 yquery (const char *ctlstr, ...)
1473 va_start (args, ctlstr);
1474 return defaulted_query (ctlstr, 'y', args);
1478 /* Print an error message saying that we couldn't make sense of a
1479 \^mumble sequence in a string or character constant. START and END
1480 indicate a substring of some larger string that contains the
1481 erroneous backslash sequence, missing the initial backslash. */
1483 no_control_char_error (const char *start, const char *end)
1485 int len = end - start;
1486 char *copy = alloca (end - start + 1);
1488 memcpy (copy, start, len);
1491 error ("There is no control character `\\%s' in the `%s' character set.",
1492 copy, target_charset ());
1495 /* Parse a C escape sequence. STRING_PTR points to a variable
1496 containing a pointer to the string to parse. That pointer
1497 should point to the character after the \. That pointer
1498 is updated past the characters we use. The value of the
1499 escape sequence is returned.
1501 A negative value means the sequence \ newline was seen,
1502 which is supposed to be equivalent to nothing at all.
1504 If \ is followed by a null character, we return a negative
1505 value and leave the string pointer pointing at the null character.
1507 If \ is followed by 000, we return 0 and leave the string pointer
1508 after the zeros. A value of 0 does not mean end of string. */
1511 parse_escape (char **string_ptr)
1514 int c = *(*string_ptr)++;
1515 if (c_parse_backslash (c, &target_char))
1527 /* Remember where this escape sequence started, for reporting
1529 char *sequence_start_pos = *string_ptr - 1;
1531 c = *(*string_ptr)++;
1535 /* XXXCHARSET: What is `delete' in the host character set? */
1538 if (!host_char_to_target (c, &target_char))
1539 error ("There is no character corresponding to `Delete' "
1540 "in the target character set `%s'.", host_charset ());
1545 target_char = parse_escape (string_ptr);
1548 if (!host_char_to_target (c, &target_char))
1549 no_control_char_error (sequence_start_pos, *string_ptr);
1552 /* Now target_char is something like `c', and we want to find
1553 its control-character equivalent. */
1554 if (!target_char_to_control_char (target_char, &target_char))
1555 no_control_char_error (sequence_start_pos, *string_ptr);
1560 /* XXXCHARSET: we need to use isdigit and value-of-digit
1561 methods of the host character set here. */
1577 if (c >= '0' && c <= '7')
1591 if (!host_char_to_target (c, &target_char))
1593 ("The escape sequence `\%c' is equivalent to plain `%c', which"
1594 " has no equivalent\n" "in the `%s' character set.", c, c,
1600 /* Print the character C on STREAM as part of the contents of a literal
1601 string whose delimiter is QUOTER. Note that this routine should only
1602 be call for printing things which are independent of the language
1603 of the program being debugged. */
1606 printchar (int c, void (*do_fputs) (const char *, struct ui_file *),
1607 void (*do_fprintf) (struct ui_file *, const char *, ...),
1608 struct ui_file *stream, int quoter)
1611 c &= 0xFF; /* Avoid sign bit follies */
1613 if (c < 0x20 || /* Low control chars */
1614 (c >= 0x7F && c < 0xA0) || /* DEL, High controls */
1615 (sevenbit_strings && c >= 0x80))
1616 { /* high order bit set */
1620 do_fputs ("\\n", stream);
1623 do_fputs ("\\b", stream);
1626 do_fputs ("\\t", stream);
1629 do_fputs ("\\f", stream);
1632 do_fputs ("\\r", stream);
1635 do_fputs ("\\e", stream);
1638 do_fputs ("\\a", stream);
1641 do_fprintf (stream, "\\%.3o", (unsigned int) c);
1647 if (c == '\\' || c == quoter)
1648 do_fputs ("\\", stream);
1649 do_fprintf (stream, "%c", c);
1653 /* Print the character C on STREAM as part of the contents of a
1654 literal string whose delimiter is QUOTER. Note that these routines
1655 should only be call for printing things which are independent of
1656 the language of the program being debugged. */
1659 fputstr_filtered (const char *str, int quoter, struct ui_file *stream)
1662 printchar (*str++, fputs_filtered, fprintf_filtered, stream, quoter);
1666 fputstr_unfiltered (const char *str, int quoter, struct ui_file *stream)
1669 printchar (*str++, fputs_unfiltered, fprintf_unfiltered, stream, quoter);
1673 fputstrn_unfiltered (const char *str, int n, int quoter,
1674 struct ui_file *stream)
1677 for (i = 0; i < n; i++)
1678 printchar (str[i], fputs_unfiltered, fprintf_unfiltered, stream, quoter);
1682 /* Number of lines per page or UINT_MAX if paging is disabled. */
1683 static unsigned int lines_per_page;
1685 /* Number of chars per line or UINT_MAX if line folding is disabled. */
1686 static unsigned int chars_per_line;
1688 /* Current count of lines printed on this page, chars on this line. */
1689 static unsigned int lines_printed, chars_printed;
1691 /* Buffer and start column of buffered text, for doing smarter word-
1692 wrapping. When someone calls wrap_here(), we start buffering output
1693 that comes through fputs_filtered(). If we see a newline, we just
1694 spit it out and forget about the wrap_here(). If we see another
1695 wrap_here(), we spit it out and remember the newer one. If we see
1696 the end of the line, we spit out a newline, the indent, and then
1697 the buffered output. */
1699 /* Malloc'd buffer with chars_per_line+2 bytes. Contains characters which
1700 are waiting to be output (they have already been counted in chars_printed).
1701 When wrap_buffer[0] is null, the buffer is empty. */
1702 static char *wrap_buffer;
1704 /* Pointer in wrap_buffer to the next character to fill. */
1705 static char *wrap_pointer;
1707 /* String to indent by if the wrap occurs. Must not be NULL if wrap_column
1709 static char *wrap_indent;
1711 /* Column number on the screen where wrap_buffer begins, or 0 if wrapping
1712 is not in effect. */
1713 static int wrap_column;
1716 /* Inialize the number of lines per page and chars per line. */
1719 init_page_info (void)
1722 if (!tui_get_command_dimension (&chars_per_line, &lines_per_page))
1727 #if defined(__GO32__)
1728 rows = ScreenRows ();
1729 cols = ScreenCols ();
1730 lines_per_page = rows;
1731 chars_per_line = cols;
1733 /* Make sure Readline has initialized its terminal settings. */
1734 rl_reset_terminal (NULL);
1736 /* Get the screen size from Readline. */
1737 rl_get_screen_size (&rows, &cols);
1738 lines_per_page = rows;
1739 chars_per_line = cols;
1741 /* Readline should have fetched the termcap entry for us. */
1742 if (tgetnum ("li") < 0 || getenv ("EMACS"))
1744 /* The number of lines per page is not mentioned in the
1745 terminal description. This probably means that paging is
1746 not useful (e.g. emacs shell window), so disable paging. */
1747 lines_per_page = UINT_MAX;
1750 /* FIXME: Get rid of this junk. */
1751 #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER)
1752 SIGWINCH_HANDLER (SIGWINCH);
1755 /* If the output is not a terminal, don't paginate it. */
1756 if (!ui_file_isatty (gdb_stdout))
1757 lines_per_page = UINT_MAX;
1765 /* Set the screen size based on LINES_PER_PAGE and CHARS_PER_LINE. */
1768 set_screen_size (void)
1770 int rows = lines_per_page;
1771 int cols = chars_per_line;
1777 rl_get_screen_size (NULL, &cols);
1779 /* Update Readline's idea of the terminal size. */
1780 rl_set_screen_size (rows, cols);
1783 /* Reinitialize WRAP_BUFFER according to the current value of
1789 if (chars_per_line == 0)
1794 wrap_buffer = (char *) xmalloc (chars_per_line + 2);
1795 wrap_buffer[0] = '\0';
1798 wrap_buffer = (char *) xrealloc (wrap_buffer, chars_per_line + 2);
1799 wrap_pointer = wrap_buffer; /* Start it at the beginning. */
1803 set_width_command (char *args, int from_tty, struct cmd_list_element *c)
1810 set_height_command (char *args, int from_tty, struct cmd_list_element *c)
1815 /* Wait, so the user can read what's on the screen. Prompt the user
1816 to continue by pressing RETURN. */
1819 prompt_for_continue (void)
1822 char cont_prompt[120];
1824 if (annotation_level > 1)
1825 printf_unfiltered ("\n\032\032pre-prompt-for-continue\n");
1827 strcpy (cont_prompt,
1828 "---Type <return> to continue, or q <return> to quit---");
1829 if (annotation_level > 1)
1830 strcat (cont_prompt, "\n\032\032prompt-for-continue\n");
1832 /* We must do this *before* we call gdb_readline, else it will eventually
1833 call us -- thinking that we're trying to print beyond the end of the
1835 reinitialize_more_filter ();
1838 /* On a real operating system, the user can quit with SIGINT.
1841 'q' is provided on all systems so users don't have to change habits
1842 from system to system, and because telling them what to do in
1843 the prompt is more user-friendly than expecting them to think of
1845 /* Call readline, not gdb_readline, because GO32 readline handles control-C
1846 whereas control-C to gdb_readline will cause the user to get dumped
1848 ignore = gdb_readline_wrapper (cont_prompt);
1850 if (annotation_level > 1)
1851 printf_unfiltered ("\n\032\032post-prompt-for-continue\n");
1856 while (*p == ' ' || *p == '\t')
1861 request_quit (SIGINT);
1863 async_request_quit (0);
1869 /* Now we have to do this again, so that GDB will know that it doesn't
1870 need to save the ---Type <return>--- line at the top of the screen. */
1871 reinitialize_more_filter ();
1873 dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */
1876 /* Reinitialize filter; ie. tell it to reset to original values. */
1879 reinitialize_more_filter (void)
1885 /* Indicate that if the next sequence of characters overflows the line,
1886 a newline should be inserted here rather than when it hits the end.
1887 If INDENT is non-null, it is a string to be printed to indent the
1888 wrapped part on the next line. INDENT must remain accessible until
1889 the next call to wrap_here() or until a newline is printed through
1892 If the line is already overfull, we immediately print a newline and
1893 the indentation, and disable further wrapping.
1895 If we don't know the width of lines, but we know the page height,
1896 we must not wrap words, but should still keep track of newlines
1897 that were explicitly printed.
1899 INDENT should not contain tabs, as that will mess up the char count
1900 on the next line. FIXME.
1902 This routine is guaranteed to force out any output which has been
1903 squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be
1904 used to force out output from the wrap_buffer. */
1907 wrap_here (char *indent)
1909 /* This should have been allocated, but be paranoid anyway. */
1911 internal_error (__FILE__, __LINE__, "failed internal consistency check");
1915 *wrap_pointer = '\0';
1916 fputs_unfiltered (wrap_buffer, gdb_stdout);
1918 wrap_pointer = wrap_buffer;
1919 wrap_buffer[0] = '\0';
1920 if (chars_per_line == UINT_MAX) /* No line overflow checking */
1924 else if (chars_printed >= chars_per_line)
1926 puts_filtered ("\n");
1928 puts_filtered (indent);
1933 wrap_column = chars_printed;
1937 wrap_indent = indent;
1941 /* Print input string to gdb_stdout, filtered, with wrap,
1942 arranging strings in columns of n chars. String can be
1943 right or left justified in the column. Never prints
1944 trailing spaces. String should never be longer than
1945 width. FIXME: this could be useful for the EXAMINE
1946 command, which currently doesn't tabulate very well */
1949 puts_filtered_tabular (char *string, int width, int right)
1955 gdb_assert (chars_per_line > 0);
1956 if (chars_per_line == UINT_MAX)
1958 fputs_filtered (string, gdb_stdout);
1959 fputs_filtered ("\n", gdb_stdout);
1963 if (((chars_printed - 1) / width + 2) * width >= chars_per_line)
1964 fputs_filtered ("\n", gdb_stdout);
1966 if (width >= chars_per_line)
1967 width = chars_per_line - 1;
1969 stringlen = strlen (string);
1971 if (chars_printed > 0)
1972 spaces = width - (chars_printed - 1) % width - 1;
1974 spaces += width - stringlen;
1976 spacebuf = alloca (spaces + 1);
1977 spacebuf[spaces] = '\0';
1979 spacebuf[spaces] = ' ';
1981 fputs_filtered (spacebuf, gdb_stdout);
1982 fputs_filtered (string, gdb_stdout);
1986 /* Ensure that whatever gets printed next, using the filtered output
1987 commands, starts at the beginning of the line. I.E. if there is
1988 any pending output for the current line, flush it and start a new
1989 line. Otherwise do nothing. */
1994 if (chars_printed > 0)
1996 puts_filtered ("\n");
2001 /* Like fputs but if FILTER is true, pause after every screenful.
2003 Regardless of FILTER can wrap at points other than the final
2004 character of a line.
2006 Unlike fputs, fputs_maybe_filtered does not return a value.
2007 It is OK for LINEBUFFER to be NULL, in which case just don't print
2010 Note that a longjmp to top level may occur in this routine (only if
2011 FILTER is true) (since prompt_for_continue may do so) so this
2012 routine should not be called when cleanups are not in place. */
2015 fputs_maybe_filtered (const char *linebuffer, struct ui_file *stream,
2018 const char *lineptr;
2020 if (linebuffer == 0)
2023 /* Don't do any filtering if it is disabled. */
2024 if ((stream != gdb_stdout) || !pagination_enabled
2025 || (lines_per_page == UINT_MAX && chars_per_line == UINT_MAX))
2027 fputs_unfiltered (linebuffer, stream);
2031 /* Go through and output each character. Show line extension
2032 when this is necessary; prompt user for new page when this is
2035 lineptr = linebuffer;
2038 /* Possible new page. */
2039 if (filter && (lines_printed >= lines_per_page - 1))
2040 prompt_for_continue ();
2042 while (*lineptr && *lineptr != '\n')
2044 /* Print a single line. */
2045 if (*lineptr == '\t')
2048 *wrap_pointer++ = '\t';
2050 fputc_unfiltered ('\t', stream);
2051 /* Shifting right by 3 produces the number of tab stops
2052 we have already passed, and then adding one and
2053 shifting left 3 advances to the next tab stop. */
2054 chars_printed = ((chars_printed >> 3) + 1) << 3;
2060 *wrap_pointer++ = *lineptr;
2062 fputc_unfiltered (*lineptr, stream);
2067 if (chars_printed >= chars_per_line)
2069 unsigned int save_chars = chars_printed;
2073 /* If we aren't actually wrapping, don't output newline --
2074 if chars_per_line is right, we probably just overflowed
2075 anyway; if it's wrong, let us keep going. */
2077 fputc_unfiltered ('\n', stream);
2079 /* Possible new page. */
2080 if (lines_printed >= lines_per_page - 1)
2081 prompt_for_continue ();
2083 /* Now output indentation and wrapped string */
2086 fputs_unfiltered (wrap_indent, stream);
2087 *wrap_pointer = '\0'; /* Null-terminate saved stuff */
2088 fputs_unfiltered (wrap_buffer, stream); /* and eject it */
2089 /* FIXME, this strlen is what prevents wrap_indent from
2090 containing tabs. However, if we recurse to print it
2091 and count its chars, we risk trouble if wrap_indent is
2092 longer than (the user settable) chars_per_line.
2093 Note also that this can set chars_printed > chars_per_line
2094 if we are printing a long string. */
2095 chars_printed = strlen (wrap_indent)
2096 + (save_chars - wrap_column);
2097 wrap_pointer = wrap_buffer; /* Reset buffer */
2098 wrap_buffer[0] = '\0';
2099 wrap_column = 0; /* And disable fancy wrap */
2104 if (*lineptr == '\n')
2107 wrap_here ((char *) 0); /* Spit out chars, cancel further wraps */
2109 fputc_unfiltered ('\n', stream);
2116 fputs_filtered (const char *linebuffer, struct ui_file *stream)
2118 fputs_maybe_filtered (linebuffer, stream, 1);
2122 putchar_unfiltered (int c)
2125 ui_file_write (gdb_stdout, &buf, 1);
2129 /* Write character C to gdb_stdout using GDB's paging mechanism and return C.
2130 May return nonlocally. */
2133 putchar_filtered (int c)
2135 return fputc_filtered (c, gdb_stdout);
2139 fputc_unfiltered (int c, struct ui_file *stream)
2142 ui_file_write (stream, &buf, 1);
2147 fputc_filtered (int c, struct ui_file *stream)
2153 fputs_filtered (buf, stream);
2157 /* puts_debug is like fputs_unfiltered, except it prints special
2158 characters in printable fashion. */
2161 puts_debug (char *prefix, char *string, char *suffix)
2165 /* Print prefix and suffix after each line. */
2166 static int new_line = 1;
2167 static int return_p = 0;
2168 static char *prev_prefix = "";
2169 static char *prev_suffix = "";
2171 if (*string == '\n')
2174 /* If the prefix is changing, print the previous suffix, a new line,
2175 and the new prefix. */
2176 if ((return_p || (strcmp (prev_prefix, prefix) != 0)) && !new_line)
2178 fputs_unfiltered (prev_suffix, gdb_stdlog);
2179 fputs_unfiltered ("\n", gdb_stdlog);
2180 fputs_unfiltered (prefix, gdb_stdlog);
2183 /* Print prefix if we printed a newline during the previous call. */
2187 fputs_unfiltered (prefix, gdb_stdlog);
2190 prev_prefix = prefix;
2191 prev_suffix = suffix;
2193 /* Output characters in a printable format. */
2194 while ((ch = *string++) != '\0')
2200 fputc_unfiltered (ch, gdb_stdlog);
2203 fprintf_unfiltered (gdb_stdlog, "\\x%02x", ch & 0xff);
2207 fputs_unfiltered ("\\\\", gdb_stdlog);
2210 fputs_unfiltered ("\\b", gdb_stdlog);
2213 fputs_unfiltered ("\\f", gdb_stdlog);
2217 fputs_unfiltered ("\\n", gdb_stdlog);
2220 fputs_unfiltered ("\\r", gdb_stdlog);
2223 fputs_unfiltered ("\\t", gdb_stdlog);
2226 fputs_unfiltered ("\\v", gdb_stdlog);
2230 return_p = ch == '\r';
2233 /* Print suffix if we printed a newline. */
2236 fputs_unfiltered (suffix, gdb_stdlog);
2237 fputs_unfiltered ("\n", gdb_stdlog);
2242 /* Print a variable number of ARGS using format FORMAT. If this
2243 information is going to put the amount written (since the last call
2244 to REINITIALIZE_MORE_FILTER or the last page break) over the page size,
2245 call prompt_for_continue to get the users permision to continue.
2247 Unlike fprintf, this function does not return a value.
2249 We implement three variants, vfprintf (takes a vararg list and stream),
2250 fprintf (takes a stream to write on), and printf (the usual).
2252 Note also that a longjmp to top level may occur in this routine
2253 (since prompt_for_continue may do so) so this routine should not be
2254 called when cleanups are not in place. */
2257 vfprintf_maybe_filtered (struct ui_file *stream, const char *format,
2258 va_list args, int filter)
2261 struct cleanup *old_cleanups;
2263 xvasprintf (&linebuffer, format, args);
2264 old_cleanups = make_cleanup (xfree, linebuffer);
2265 fputs_maybe_filtered (linebuffer, stream, filter);
2266 do_cleanups (old_cleanups);
2271 vfprintf_filtered (struct ui_file *stream, const char *format, va_list args)
2273 vfprintf_maybe_filtered (stream, format, args, 1);
2277 vfprintf_unfiltered (struct ui_file *stream, const char *format, va_list args)
2280 struct cleanup *old_cleanups;
2282 xvasprintf (&linebuffer, format, args);
2283 old_cleanups = make_cleanup (xfree, linebuffer);
2284 fputs_unfiltered (linebuffer, stream);
2285 do_cleanups (old_cleanups);
2289 vprintf_filtered (const char *format, va_list args)
2291 vfprintf_maybe_filtered (gdb_stdout, format, args, 1);
2295 vprintf_unfiltered (const char *format, va_list args)
2297 vfprintf_unfiltered (gdb_stdout, format, args);
2301 fprintf_filtered (struct ui_file *stream, const char *format, ...)
2304 va_start (args, format);
2305 vfprintf_filtered (stream, format, args);
2310 fprintf_unfiltered (struct ui_file *stream, const char *format, ...)
2313 va_start (args, format);
2314 vfprintf_unfiltered (stream, format, args);
2318 /* Like fprintf_filtered, but prints its result indented.
2319 Called as fprintfi_filtered (spaces, stream, format, ...); */
2322 fprintfi_filtered (int spaces, struct ui_file *stream, const char *format,
2326 va_start (args, format);
2327 print_spaces_filtered (spaces, stream);
2329 vfprintf_filtered (stream, format, args);
2335 printf_filtered (const char *format, ...)
2338 va_start (args, format);
2339 vfprintf_filtered (gdb_stdout, format, args);
2345 printf_unfiltered (const char *format, ...)
2348 va_start (args, format);
2349 vfprintf_unfiltered (gdb_stdout, format, args);
2353 /* Like printf_filtered, but prints it's result indented.
2354 Called as printfi_filtered (spaces, format, ...); */
2357 printfi_filtered (int spaces, const char *format, ...)
2360 va_start (args, format);
2361 print_spaces_filtered (spaces, gdb_stdout);
2362 vfprintf_filtered (gdb_stdout, format, args);
2366 /* Easy -- but watch out!
2368 This routine is *not* a replacement for puts()! puts() appends a newline.
2369 This one doesn't, and had better not! */
2372 puts_filtered (const char *string)
2374 fputs_filtered (string, gdb_stdout);
2378 puts_unfiltered (const char *string)
2380 fputs_unfiltered (string, gdb_stdout);
2383 /* Return a pointer to N spaces and a null. The pointer is good
2384 until the next call to here. */
2389 static char *spaces = 0;
2390 static int max_spaces = -1;
2396 spaces = (char *) xmalloc (n + 1);
2397 for (t = spaces + n; t != spaces;)
2403 return spaces + max_spaces - n;
2406 /* Print N spaces. */
2408 print_spaces_filtered (int n, struct ui_file *stream)
2410 fputs_filtered (n_spaces (n), stream);
2413 /* C++/ObjC demangler stuff. */
2415 /* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language
2416 LANG, using demangling args ARG_MODE, and print it filtered to STREAM.
2417 If the name is not mangled, or the language for the name is unknown, or
2418 demangling is off, the name is printed in its "raw" form. */
2421 fprintf_symbol_filtered (struct ui_file *stream, char *name,
2422 enum language lang, int arg_mode)
2428 /* If user wants to see raw output, no problem. */
2431 fputs_filtered (name, stream);
2435 demangled = language_demangle (language_def (lang), name, arg_mode);
2436 fputs_filtered (demangled ? demangled : name, stream);
2437 if (demangled != NULL)
2445 /* Do a strcmp() type operation on STRING1 and STRING2, ignoring any
2446 differences in whitespace. Returns 0 if they match, non-zero if they
2447 don't (slightly different than strcmp()'s range of return values).
2449 As an extra hack, string1=="FOO(ARGS)" matches string2=="FOO".
2450 This "feature" is useful when searching for matching C++ function names
2451 (such as if the user types 'break FOO', where FOO is a mangled C++
2455 strcmp_iw (const char *string1, const char *string2)
2457 while ((*string1 != '\0') && (*string2 != '\0'))
2459 while (isspace (*string1))
2463 while (isspace (*string2))
2467 if (*string1 != *string2)
2471 if (*string1 != '\0')
2477 return (*string1 != '\0' && *string1 != '(') || (*string2 != '\0');
2480 /* This is like strcmp except that it ignores whitespace and treats
2481 '(' as the first non-NULL character in terms of ordering. Like
2482 strcmp (and unlike strcmp_iw), it returns negative if STRING1 <
2483 STRING2, 0 if STRING2 = STRING2, and positive if STRING1 > STRING2
2484 according to that ordering.
2486 If a list is sorted according to this function and if you want to
2487 find names in the list that match some fixed NAME according to
2488 strcmp_iw(LIST_ELT, NAME), then the place to start looking is right
2489 where this function would put NAME.
2491 Here are some examples of why using strcmp to sort is a bad idea:
2495 Say your partial symtab contains: "foo<char *>", "goo". Then, if
2496 we try to do a search for "foo<char*>", strcmp will locate this
2497 after "foo<char *>" and before "goo". Then lookup_partial_symbol
2498 will start looking at strings beginning with "goo", and will never
2499 see the correct match of "foo<char *>".
2501 Parenthesis example:
2503 In practice, this is less like to be an issue, but I'll give it a
2504 shot. Let's assume that '$' is a legitimate character to occur in
2505 symbols. (Which may well even be the case on some systems.) Then
2506 say that the partial symbol table contains "foo$" and "foo(int)".
2507 strcmp will put them in this order, since '$' < '('. Now, if the
2508 user searches for "foo", then strcmp will sort "foo" before "foo$".
2509 Then lookup_partial_symbol will notice that strcmp_iw("foo$",
2510 "foo") is false, so it won't proceed to the actual match of
2511 "foo(int)" with "foo". */
2514 strcmp_iw_ordered (const char *string1, const char *string2)
2516 while ((*string1 != '\0') && (*string2 != '\0'))
2518 while (isspace (*string1))
2522 while (isspace (*string2))
2526 if (*string1 != *string2)
2530 if (*string1 != '\0')
2539 /* Characters are non-equal unless they're both '\0'; we want to
2540 make sure we get the comparison right according to our
2541 comparison in the cases where one of them is '\0' or '('. */
2543 if (*string2 == '\0')
2548 if (*string2 == '\0')
2553 if (*string2 == '(')
2556 return *string1 - *string2;
2560 /* A simple comparison function with opposite semantics to strcmp. */
2563 streq (const char *lhs, const char *rhs)
2565 return !strcmp (lhs, rhs);
2571 ** Answer whether string_to_compare is a full or partial match to
2572 ** template_string. The partial match must be in sequence starting
2576 subset_compare (char *string_to_compare, char *template_string)
2579 if (template_string != (char *) NULL && string_to_compare != (char *) NULL
2580 && strlen (string_to_compare) <= strlen (template_string))
2583 (template_string, string_to_compare, strlen (string_to_compare)) == 0);
2590 static void pagination_on_command (char *arg, int from_tty);
2592 pagination_on_command (char *arg, int from_tty)
2594 pagination_enabled = 1;
2597 static void pagination_on_command (char *arg, int from_tty);
2599 pagination_off_command (char *arg, int from_tty)
2601 pagination_enabled = 0;
2606 initialize_utils (void)
2608 struct cmd_list_element *c;
2610 c = add_set_cmd ("width", class_support, var_uinteger, &chars_per_line,
2611 "Set number of characters gdb thinks are in a line.",
2613 add_show_from_set (c, &showlist);
2614 set_cmd_sfunc (c, set_width_command);
2616 c = add_set_cmd ("height", class_support, var_uinteger, &lines_per_page,
2617 "Set number of lines gdb thinks are in a page.", &setlist);
2618 add_show_from_set (c, &showlist);
2619 set_cmd_sfunc (c, set_height_command);
2624 (add_set_cmd ("demangle", class_support, var_boolean,
2626 "Set demangling of encoded C++/ObjC names when displaying symbols.",
2627 &setprintlist), &showprintlist);
2630 (add_set_cmd ("pagination", class_support,
2631 var_boolean, (char *) &pagination_enabled,
2632 "Set state of pagination.", &setlist), &showlist);
2636 add_com ("am", class_support, pagination_on_command,
2637 "Enable pagination");
2638 add_com ("sm", class_support, pagination_off_command,
2639 "Disable pagination");
2643 (add_set_cmd ("sevenbit-strings", class_support, var_boolean,
2644 (char *) &sevenbit_strings,
2645 "Set printing of 8-bit characters in strings as \\nnn.",
2646 &setprintlist), &showprintlist);
2649 (add_set_cmd ("asm-demangle", class_support, var_boolean,
2650 (char *) &asm_demangle,
2651 "Set demangling of C++/ObjC names in disassembly listings.",
2652 &setprintlist), &showprintlist);
2655 /* Machine specific function to handle SIGWINCH signal. */
2657 #ifdef SIGWINCH_HANDLER_BODY
2658 SIGWINCH_HANDLER_BODY
2660 /* print routines to handle variable size regs, etc. */
2661 /* temporary storage using circular buffer */
2667 static char buf[NUMCELLS][CELLSIZE];
2668 static int cell = 0;
2669 if (++cell >= NUMCELLS)
2677 return (TARGET_ADDR_BIT / 8 * 2);
2681 paddr (CORE_ADDR addr)
2683 return phex (addr, TARGET_ADDR_BIT / 8);
2687 paddr_nz (CORE_ADDR addr)
2689 return phex_nz (addr, TARGET_ADDR_BIT / 8);
2693 decimal2str (char *paddr_str, char *sign, ULONGEST addr)
2695 /* steal code from valprint.c:print_decimal(). Should this worry
2696 about the real size of addr as the above does? */
2697 unsigned long temp[3];
2701 temp[i] = addr % (1000 * 1000 * 1000);
2702 addr /= (1000 * 1000 * 1000);
2705 while (addr != 0 && i < (sizeof (temp) / sizeof (temp[0])));
2709 sprintf (paddr_str, "%s%lu", sign, temp[0]);
2712 sprintf (paddr_str, "%s%lu%09lu", sign, temp[1], temp[0]);
2715 sprintf (paddr_str, "%s%lu%09lu%09lu", sign, temp[2], temp[1], temp[0]);
2718 internal_error (__FILE__, __LINE__,
2719 "failed internal consistency check");
2724 paddr_u (CORE_ADDR addr)
2726 char *paddr_str = get_cell ();
2727 decimal2str (paddr_str, "", addr);
2732 paddr_d (LONGEST addr)
2734 char *paddr_str = get_cell ();
2736 decimal2str (paddr_str, "-", -addr);
2738 decimal2str (paddr_str, "", addr);
2742 /* eliminate warning from compiler on 32-bit systems */
2743 static int thirty_two = 32;
2746 phex (ULONGEST l, int sizeof_l)
2753 sprintf (str, "%08lx%08lx",
2754 (unsigned long) (l >> thirty_two),
2755 (unsigned long) (l & 0xffffffff));
2759 sprintf (str, "%08lx", (unsigned long) l);
2763 sprintf (str, "%04x", (unsigned short) (l & 0xffff));
2766 str = phex (l, sizeof (l));
2773 phex_nz (ULONGEST l, int sizeof_l)
2780 unsigned long high = (unsigned long) (l >> thirty_two);
2783 sprintf (str, "%lx", (unsigned long) (l & 0xffffffff));
2785 sprintf (str, "%lx%08lx", high, (unsigned long) (l & 0xffffffff));
2790 sprintf (str, "%lx", (unsigned long) l);
2794 sprintf (str, "%x", (unsigned short) (l & 0xffff));
2797 str = phex_nz (l, sizeof (l));
2804 /* Convert a CORE_ADDR into a string. */
2806 core_addr_to_string (const CORE_ADDR addr)
2808 char *str = get_cell ();
2810 strcat (str, phex (addr, sizeof (addr)));
2815 core_addr_to_string_nz (const CORE_ADDR addr)
2817 char *str = get_cell ();
2819 strcat (str, phex_nz (addr, sizeof (addr)));
2823 /* Convert a string back into a CORE_ADDR. */
2825 string_to_core_addr (const char *my_string)
2828 if (my_string[0] == '0' && tolower (my_string[1]) == 'x')
2830 /* Assume that it is in decimal. */
2832 for (i = 2; my_string[i] != '\0'; i++)
2834 if (isdigit (my_string[i]))
2835 addr = (my_string[i] - '0') + (addr * 16);
2836 else if (isxdigit (my_string[i]))
2837 addr = (tolower (my_string[i]) - 'a' + 0xa) + (addr * 16);
2839 internal_error (__FILE__, __LINE__, "invalid hex");
2844 /* Assume that it is in decimal. */
2846 for (i = 0; my_string[i] != '\0'; i++)
2848 if (isdigit (my_string[i]))
2849 addr = (my_string[i] - '0') + (addr * 10);
2851 internal_error (__FILE__, __LINE__, "invalid decimal");
2858 gdb_realpath (const char *filename)
2860 /* Method 1: The system has a compile time upper bound on a filename
2861 path. Use that and realpath() to canonicalize the name. This is
2862 the most common case. Note that, if there isn't a compile time
2863 upper bound, you want to avoid realpath() at all costs. */
2864 #if defined(HAVE_REALPATH)
2866 # if defined (PATH_MAX)
2868 # define USE_REALPATH
2869 # elif defined (MAXPATHLEN)
2870 char buf[MAXPATHLEN];
2871 # define USE_REALPATH
2873 # if defined (USE_REALPATH)
2874 const char *rp = realpath (filename, buf);
2877 return xstrdup (rp);
2880 #endif /* HAVE_REALPATH */
2882 /* Method 2: The host system (i.e., GNU) has the function
2883 canonicalize_file_name() which malloc's a chunk of memory and
2884 returns that, use that. */
2885 #if defined(HAVE_CANONICALIZE_FILE_NAME)
2887 char *rp = canonicalize_file_name (filename);
2889 return xstrdup (filename);
2895 /* FIXME: cagney/2002-11-13:
2897 Method 2a: Use realpath() with a NULL buffer. Some systems, due
2898 to the problems described in in method 3, have modified their
2899 realpath() implementation so that it will allocate a buffer when
2900 NULL is passed in. Before this can be used, though, some sort of
2901 configure time test would need to be added. Otherwize the code
2902 will likely core dump. */
2904 /* Method 3: Now we're getting desperate! The system doesn't have a
2905 compile time buffer size and no alternative function. Query the
2906 OS, using pathconf(), for the buffer limit. Care is needed
2907 though, some systems do not limit PATH_MAX (return -1 for
2908 pathconf()) making it impossible to pass a correctly sized buffer
2909 to realpath() (it could always overflow). On those systems, we
2911 #if defined (HAVE_REALPATH) && defined (HAVE_UNISTD_H) && defined(HAVE_ALLOCA)
2913 /* Find out the max path size. */
2914 long path_max = pathconf ("/", _PC_PATH_MAX);
2917 /* PATH_MAX is bounded. */
2918 char *buf = alloca (path_max);
2919 char *rp = realpath (filename, buf);
2920 return xstrdup (rp ? rp : filename);
2925 /* This system is a lost cause, just dup the buffer. */
2926 return xstrdup (filename);
2929 /* Return a copy of FILENAME, with its directory prefix canonicalized
2933 xfullpath (const char *filename)
2935 const char *base_name = lbasename (filename);
2940 /* Extract the basename of filename, and return immediately
2941 a copy of filename if it does not contain any directory prefix. */
2942 if (base_name == filename)
2943 return xstrdup (filename);
2945 dir_name = alloca ((size_t) (base_name - filename + 2));
2946 /* Allocate enough space to store the dir_name + plus one extra
2947 character sometimes needed under Windows (see below), and
2948 then the closing \000 character */
2949 strncpy (dir_name, filename, base_name - filename);
2950 dir_name[base_name - filename] = '\000';
2952 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
2953 /* We need to be careful when filename is of the form 'd:foo', which
2954 is equivalent of d:./foo, which is totally different from d:/foo. */
2955 if (strlen (dir_name) == 2 && isalpha (dir_name[0]) && dir_name[1] == ':')
2958 dir_name[3] = '\000';
2962 /* Canonicalize the directory prefix, and build the resulting
2963 filename. If the dirname realpath already contains an ending
2964 directory separator, avoid doubling it. */
2965 real_path = gdb_realpath (dir_name);
2966 if (IS_DIR_SEPARATOR (real_path[strlen (real_path) - 1]))
2967 result = concat (real_path, base_name, NULL);
2969 result = concat (real_path, SLASH_STRING, base_name, NULL);
2976 /* This is the 32-bit CRC function used by the GNU separate debug
2977 facility. An executable may contain a section named
2978 .gnu_debuglink, which holds the name of a separate executable file
2979 containing its debug info, and a checksum of that file's contents,
2980 computed using this function. */
2982 gnu_debuglink_crc32 (unsigned long crc, unsigned char *buf, size_t len)
2984 static const unsigned long crc32_table[256] = {
2985 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419,
2986 0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4,
2987 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07,
2988 0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,
2989 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856,
2990 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
2991 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4,
2992 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
2993 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3,
2994 0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a,
2995 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599,
2996 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
2997 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190,
2998 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f,
2999 0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e,
3000 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
3001 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed,
3002 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
3003 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3,
3004 0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2,
3005 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a,
3006 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5,
3007 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010,
3008 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
3009 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17,
3010 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6,
3011 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615,
3012 0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,
3013 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344,
3014 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
3015 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a,
3016 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
3017 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1,
3018 0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c,
3019 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef,
3020 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
3021 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe,
3022 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31,
3023 0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c,
3024 0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
3025 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b,
3026 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
3027 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1,
3028 0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,
3029 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278,
3030 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7,
3031 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66,
3032 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
3033 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605,
3034 0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8,
3035 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b,
3040 crc = ~crc & 0xffffffff;
3041 for (end = buf + len; buf < end; ++buf)
3042 crc = crc32_table[(crc ^ *buf) & 0xff] ^ (crc >> 8);
3043 return ~crc & 0xffffffff;;
3047 align_up (ULONGEST v, int n)
3049 /* Check that N is really a power of two. */
3050 gdb_assert (n && (n & (n-1)) == 0);
3051 return (v + n - 1) & -n;
3055 align_down (ULONGEST v, int n)
3057 /* Check that N is really a power of two. */
3058 gdb_assert (n && (n & (n-1)) == 0);