1 /* General utility routines for GDB, the GNU debugger.
3 Copyright (C) 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
4 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
5 Free Software Foundation, Inc.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 51 Franklin Street, Fifth Floor,
22 Boston, MA 02110-1301, USA. */
25 #include "gdb_assert.h"
27 #include "gdb_string.h"
28 #include "event-top.h"
29 #include "exceptions.h"
32 #include "tui/tui.h" /* For tui_get_command_dimension. */
39 /* SunOS's curses.h has a '#define reg register' in it. Thank you Sun. */
50 #include "expression.h"
54 #include "filenames.h"
56 #include "gdb_obstack.h"
58 #include "inferior.h" /* for signed_pointer_to_address */
60 #include <sys/param.h> /* For MAXPATHLEN */
62 #include "gdb_curses.h"
64 #include "readline/readline.h"
67 extern PTR
malloc (); /* OK: PTR */
69 #if !HAVE_DECL_REALLOC
70 extern PTR
realloc (); /* OK: PTR */
76 /* readline defines this. */
79 void (*deprecated_error_begin_hook
) (void);
81 /* Prototypes for local functions */
83 static void vfprintf_maybe_filtered (struct ui_file
*, const char *,
84 va_list, int) ATTR_FORMAT (printf
, 2, 0);
86 static void fputs_maybe_filtered (const char *, struct ui_file
*, int);
88 static void do_my_cleanups (struct cleanup
**, struct cleanup
*);
90 static void prompt_for_continue (void);
92 static void set_screen_size (void);
93 static void set_width (void);
95 /* Chain of cleanup actions established with make_cleanup,
96 to be executed if an error happens. */
98 static struct cleanup
*cleanup_chain
; /* cleaned up after a failed command */
99 static struct cleanup
*final_cleanup_chain
; /* cleaned up when gdb exits */
100 static struct cleanup
*run_cleanup_chain
; /* cleaned up on each 'run' */
101 static struct cleanup
*exec_cleanup_chain
; /* cleaned up on each execution command */
102 /* cleaned up on each error from within an execution command */
103 static struct cleanup
*exec_error_cleanup_chain
;
105 /* Pointer to what is left to do for an execution command after the
106 target stops. Used only in asynchronous mode, by targets that
107 support async execution. The finish and until commands use it. So
108 does the target extended-remote command. */
109 struct continuation
*cmd_continuation
;
110 struct continuation
*intermediate_continuation
;
112 /* Nonzero if we have job control. */
116 /* Nonzero means a quit has been requested. */
120 /* Nonzero means quit immediately if Control-C is typed now, rather
121 than waiting until QUIT is executed. Be careful in setting this;
122 code which executes with immediate_quit set has to be very careful
123 about being able to deal with being interrupted at any time. It is
124 almost always better to use QUIT; the only exception I can think of
125 is being able to quit out of a system call (using EINTR loses if
126 the SIGINT happens between the previous QUIT and the system call).
127 To immediately quit in the case in which a SIGINT happens between
128 the previous QUIT and setting immediate_quit (desirable anytime we
129 expect to block), call QUIT after setting immediate_quit. */
133 /* Nonzero means that encoded C++/ObjC names should be printed out in their
134 C++/ObjC form rather than raw. */
138 show_demangle (struct ui_file
*file
, int from_tty
,
139 struct cmd_list_element
*c
, const char *value
)
141 fprintf_filtered (file
, _("\
142 Demangling of encoded C++/ObjC names when displaying symbols is %s.\n"),
146 /* Nonzero means that encoded C++/ObjC names should be printed out in their
147 C++/ObjC form even in assembler language displays. If this is set, but
148 DEMANGLE is zero, names are printed raw, i.e. DEMANGLE controls. */
150 int asm_demangle
= 0;
152 show_asm_demangle (struct ui_file
*file
, int from_tty
,
153 struct cmd_list_element
*c
, const char *value
)
155 fprintf_filtered (file
, _("\
156 Demangling of C++/ObjC names in disassembly listings is %s.\n"),
160 /* Nonzero means that strings with character values >0x7F should be printed
161 as octal escapes. Zero means just print the value (e.g. it's an
162 international character, and the terminal or window can cope.) */
164 int sevenbit_strings
= 0;
166 show_sevenbit_strings (struct ui_file
*file
, int from_tty
,
167 struct cmd_list_element
*c
, const char *value
)
169 fprintf_filtered (file
, _("\
170 Printing of 8-bit characters in strings as \\nnn is %s.\n"),
174 /* String to be printed before error messages, if any. */
176 char *error_pre_print
;
178 /* String to be printed before quit messages, if any. */
180 char *quit_pre_print
;
182 /* String to be printed before warning messages, if any. */
184 char *warning_pre_print
= "\nwarning: ";
186 int pagination_enabled
= 1;
188 show_pagination_enabled (struct ui_file
*file
, int from_tty
,
189 struct cmd_list_element
*c
, const char *value
)
191 fprintf_filtered (file
, _("State of pagination is %s.\n"), value
);
196 /* Add a new cleanup to the cleanup_chain,
197 and return the previous chain pointer
198 to be passed later to do_cleanups or discard_cleanups.
199 Args are FUNCTION to clean up with, and ARG to pass to it. */
202 make_cleanup (make_cleanup_ftype
*function
, void *arg
)
204 return make_my_cleanup (&cleanup_chain
, function
, arg
);
208 make_final_cleanup (make_cleanup_ftype
*function
, void *arg
)
210 return make_my_cleanup (&final_cleanup_chain
, function
, arg
);
214 make_run_cleanup (make_cleanup_ftype
*function
, void *arg
)
216 return make_my_cleanup (&run_cleanup_chain
, function
, arg
);
220 make_exec_cleanup (make_cleanup_ftype
*function
, void *arg
)
222 return make_my_cleanup (&exec_cleanup_chain
, function
, arg
);
226 make_exec_error_cleanup (make_cleanup_ftype
*function
, void *arg
)
228 return make_my_cleanup (&exec_error_cleanup_chain
, function
, arg
);
232 do_freeargv (void *arg
)
234 freeargv ((char **) arg
);
238 make_cleanup_freeargv (char **arg
)
240 return make_my_cleanup (&cleanup_chain
, do_freeargv
, arg
);
244 do_bfd_close_cleanup (void *arg
)
250 make_cleanup_bfd_close (bfd
*abfd
)
252 return make_cleanup (do_bfd_close_cleanup
, abfd
);
256 do_close_cleanup (void *arg
)
264 make_cleanup_close (int fd
)
266 int *saved_fd
= xmalloc (sizeof (fd
));
268 return make_cleanup (do_close_cleanup
, saved_fd
);
272 do_ui_file_delete (void *arg
)
274 ui_file_delete (arg
);
278 make_cleanup_ui_file_delete (struct ui_file
*arg
)
280 return make_my_cleanup (&cleanup_chain
, do_ui_file_delete
, arg
);
284 do_free_section_addr_info (void *arg
)
286 free_section_addr_info (arg
);
290 make_cleanup_free_section_addr_info (struct section_addr_info
*addrs
)
292 return make_my_cleanup (&cleanup_chain
, do_free_section_addr_info
, addrs
);
297 make_my_cleanup (struct cleanup
**pmy_chain
, make_cleanup_ftype
*function
,
301 = (struct cleanup
*) xmalloc (sizeof (struct cleanup
));
302 struct cleanup
*old_chain
= *pmy_chain
;
304 new->next
= *pmy_chain
;
305 new->function
= function
;
312 /* Discard cleanups and do the actions they describe
313 until we get back to the point OLD_CHAIN in the cleanup_chain. */
316 do_cleanups (struct cleanup
*old_chain
)
318 do_my_cleanups (&cleanup_chain
, old_chain
);
322 do_final_cleanups (struct cleanup
*old_chain
)
324 do_my_cleanups (&final_cleanup_chain
, old_chain
);
328 do_run_cleanups (struct cleanup
*old_chain
)
330 do_my_cleanups (&run_cleanup_chain
, old_chain
);
334 do_exec_cleanups (struct cleanup
*old_chain
)
336 do_my_cleanups (&exec_cleanup_chain
, old_chain
);
340 do_exec_error_cleanups (struct cleanup
*old_chain
)
342 do_my_cleanups (&exec_error_cleanup_chain
, old_chain
);
346 do_my_cleanups (struct cleanup
**pmy_chain
,
347 struct cleanup
*old_chain
)
350 while ((ptr
= *pmy_chain
) != old_chain
)
352 *pmy_chain
= ptr
->next
; /* Do this first incase recursion */
353 (*ptr
->function
) (ptr
->arg
);
358 /* Discard cleanups, not doing the actions they describe,
359 until we get back to the point OLD_CHAIN in the cleanup_chain. */
362 discard_cleanups (struct cleanup
*old_chain
)
364 discard_my_cleanups (&cleanup_chain
, old_chain
);
368 discard_final_cleanups (struct cleanup
*old_chain
)
370 discard_my_cleanups (&final_cleanup_chain
, old_chain
);
374 discard_exec_error_cleanups (struct cleanup
*old_chain
)
376 discard_my_cleanups (&exec_error_cleanup_chain
, old_chain
);
380 discard_my_cleanups (struct cleanup
**pmy_chain
,
381 struct cleanup
*old_chain
)
384 while ((ptr
= *pmy_chain
) != old_chain
)
386 *pmy_chain
= ptr
->next
;
391 /* Set the cleanup_chain to 0, and return the old cleanup chain. */
395 return save_my_cleanups (&cleanup_chain
);
399 save_final_cleanups (void)
401 return save_my_cleanups (&final_cleanup_chain
);
405 save_my_cleanups (struct cleanup
**pmy_chain
)
407 struct cleanup
*old_chain
= *pmy_chain
;
413 /* Restore the cleanup chain from a previously saved chain. */
415 restore_cleanups (struct cleanup
*chain
)
417 restore_my_cleanups (&cleanup_chain
, chain
);
421 restore_final_cleanups (struct cleanup
*chain
)
423 restore_my_cleanups (&final_cleanup_chain
, chain
);
427 restore_my_cleanups (struct cleanup
**pmy_chain
, struct cleanup
*chain
)
432 /* This function is useful for cleanups.
436 old_chain = make_cleanup (free_current_contents, &foo);
438 to arrange to free the object thus allocated. */
441 free_current_contents (void *ptr
)
443 void **location
= ptr
;
444 if (location
== NULL
)
445 internal_error (__FILE__
, __LINE__
,
446 _("free_current_contents: NULL pointer"));
447 if (*location
!= NULL
)
454 /* Provide a known function that does nothing, to use as a base for
455 for a possibly long chain of cleanups. This is useful where we
456 use the cleanup chain for handling normal cleanups as well as dealing
457 with cleanups that need to be done as a result of a call to error().
458 In such cases, we may not be certain where the first cleanup is, unless
459 we have a do-nothing one to always use as the base. */
462 null_cleanup (void *arg
)
466 /* Add a continuation to the continuation list, the global list
467 cmd_continuation. The new continuation will be added at the front.*/
469 add_continuation (void (*continuation_hook
) (struct continuation_arg
*),
470 struct continuation_arg
*arg_list
)
472 struct continuation
*continuation_ptr
;
475 (struct continuation
*) xmalloc (sizeof (struct continuation
));
476 continuation_ptr
->continuation_hook
= continuation_hook
;
477 continuation_ptr
->arg_list
= arg_list
;
478 continuation_ptr
->next
= cmd_continuation
;
479 cmd_continuation
= continuation_ptr
;
482 /* Walk down the cmd_continuation list, and execute all the
483 continuations. There is a problem though. In some cases new
484 continuations may be added while we are in the middle of this
485 loop. If this happens they will be added in the front, and done
486 before we have a chance of exhausting those that were already
487 there. We need to then save the beginning of the list in a pointer
488 and do the continuations from there on, instead of using the
489 global beginning of list as our iteration pointer. */
491 do_all_continuations (void)
493 struct continuation
*continuation_ptr
;
494 struct continuation
*saved_continuation
;
496 /* Copy the list header into another pointer, and set the global
497 list header to null, so that the global list can change as a side
498 effect of invoking the continuations and the processing of
499 the preexisting continuations will not be affected. */
500 continuation_ptr
= cmd_continuation
;
501 cmd_continuation
= NULL
;
503 /* Work now on the list we have set aside. */
504 while (continuation_ptr
)
506 (continuation_ptr
->continuation_hook
) (continuation_ptr
->arg_list
);
507 saved_continuation
= continuation_ptr
;
508 continuation_ptr
= continuation_ptr
->next
;
509 xfree (saved_continuation
);
513 /* Walk down the cmd_continuation list, and get rid of all the
516 discard_all_continuations (void)
518 struct continuation
*continuation_ptr
;
520 while (cmd_continuation
)
522 continuation_ptr
= cmd_continuation
;
523 cmd_continuation
= continuation_ptr
->next
;
524 xfree (continuation_ptr
);
528 /* Add a continuation to the continuation list, the global list
529 intermediate_continuation. The new continuation will be added at
532 add_intermediate_continuation (void (*continuation_hook
)
533 (struct continuation_arg
*),
534 struct continuation_arg
*arg_list
)
536 struct continuation
*continuation_ptr
;
539 (struct continuation
*) xmalloc (sizeof (struct continuation
));
540 continuation_ptr
->continuation_hook
= continuation_hook
;
541 continuation_ptr
->arg_list
= arg_list
;
542 continuation_ptr
->next
= intermediate_continuation
;
543 intermediate_continuation
= continuation_ptr
;
546 /* Walk down the cmd_continuation list, and execute all the
547 continuations. There is a problem though. In some cases new
548 continuations may be added while we are in the middle of this
549 loop. If this happens they will be added in the front, and done
550 before we have a chance of exhausting those that were already
551 there. We need to then save the beginning of the list in a pointer
552 and do the continuations from there on, instead of using the
553 global beginning of list as our iteration pointer.*/
555 do_all_intermediate_continuations (void)
557 struct continuation
*continuation_ptr
;
558 struct continuation
*saved_continuation
;
560 /* Copy the list header into another pointer, and set the global
561 list header to null, so that the global list can change as a side
562 effect of invoking the continuations and the processing of
563 the preexisting continuations will not be affected. */
564 continuation_ptr
= intermediate_continuation
;
565 intermediate_continuation
= NULL
;
567 /* Work now on the list we have set aside. */
568 while (continuation_ptr
)
570 (continuation_ptr
->continuation_hook
) (continuation_ptr
->arg_list
);
571 saved_continuation
= continuation_ptr
;
572 continuation_ptr
= continuation_ptr
->next
;
573 xfree (saved_continuation
);
577 /* Walk down the cmd_continuation list, and get rid of all the
580 discard_all_intermediate_continuations (void)
582 struct continuation
*continuation_ptr
;
584 while (intermediate_continuation
)
586 continuation_ptr
= intermediate_continuation
;
587 intermediate_continuation
= continuation_ptr
->next
;
588 xfree (continuation_ptr
);
594 /* Print a warning message. The first argument STRING is the warning
595 message, used as an fprintf format string, the second is the
596 va_list of arguments for that string. A warning is unfiltered (not
597 paginated) so that the user does not need to page through each
598 screen full of warnings when there are lots of them. */
601 vwarning (const char *string
, va_list args
)
603 if (deprecated_warning_hook
)
604 (*deprecated_warning_hook
) (string
, args
);
607 target_terminal_ours ();
608 wrap_here (""); /* Force out any buffered output */
609 gdb_flush (gdb_stdout
);
610 if (warning_pre_print
)
611 fputs_unfiltered (warning_pre_print
, gdb_stderr
);
612 vfprintf_unfiltered (gdb_stderr
, string
, args
);
613 fprintf_unfiltered (gdb_stderr
, "\n");
618 /* Print a warning message.
619 The first argument STRING is the warning message, used as a fprintf string,
620 and the remaining args are passed as arguments to it.
621 The primary difference between warnings and errors is that a warning
622 does not force the return to command level. */
625 warning (const char *string
, ...)
628 va_start (args
, string
);
629 vwarning (string
, args
);
633 /* Print an error message and return to command level.
634 The first argument STRING is the error message, used as a fprintf string,
635 and the remaining args are passed as arguments to it. */
638 verror (const char *string
, va_list args
)
640 throw_verror (GENERIC_ERROR
, string
, args
);
644 error (const char *string
, ...)
647 va_start (args
, string
);
648 throw_verror (GENERIC_ERROR
, string
, args
);
652 /* Print an error message and quit.
653 The first argument STRING is the error message, used as a fprintf string,
654 and the remaining args are passed as arguments to it. */
657 vfatal (const char *string
, va_list args
)
659 throw_vfatal (string
, args
);
663 fatal (const char *string
, ...)
666 va_start (args
, string
);
667 throw_vfatal (string
, args
);
672 error_stream (struct ui_file
*stream
)
675 char *message
= ui_file_xstrdup (stream
, &len
);
676 make_cleanup (xfree
, message
);
677 error (("%s"), message
);
680 /* Print a message reporting an internal error/warning. Ask the user
681 if they want to continue, dump core, or just exit. Return
682 something to indicate a quit. */
684 struct internal_problem
687 /* FIXME: cagney/2002-08-15: There should be ``maint set/show''
688 commands available for controlling these variables. */
689 enum auto_boolean should_quit
;
690 enum auto_boolean should_dump_core
;
693 /* Report a problem, internal to GDB, to the user. Once the problem
694 has been reported, and assuming GDB didn't quit, the caller can
695 either allow execution to resume or throw an error. */
697 static void ATTR_FORMAT (printf
, 4, 0)
698 internal_vproblem (struct internal_problem
*problem
,
699 const char *file
, int line
, const char *fmt
, va_list ap
)
706 /* Don't allow infinite error/warning recursion. */
708 static char msg
[] = "Recursive internal problem.\n";
716 fputs_unfiltered (msg
, gdb_stderr
);
717 abort (); /* NOTE: GDB has only three calls to abort(). */
720 write (STDERR_FILENO
, msg
, sizeof (msg
));
725 /* Try to get the message out and at the start of a new line. */
726 target_terminal_ours ();
729 /* Create a string containing the full error/warning message. Need
730 to call query with this full string, as otherwize the reason
731 (error/warning) and question become separated. Format using a
732 style similar to a compiler error message. Include extra detail
733 so that the user knows that they are living on the edge. */
736 msg
= xstrvprintf (fmt
, ap
);
737 reason
= xstrprintf ("\
739 A problem internal to GDB has been detected,\n\
740 further debugging may prove unreliable.", file
, line
, problem
->name
, msg
);
742 make_cleanup (xfree
, reason
);
745 switch (problem
->should_quit
)
747 case AUTO_BOOLEAN_AUTO
:
748 /* Default (yes/batch case) is to quit GDB. When in batch mode
749 this lessens the likelhood of GDB going into an infinate
751 quit_p
= query (_("%s\nQuit this debugging session? "), reason
);
753 case AUTO_BOOLEAN_TRUE
:
756 case AUTO_BOOLEAN_FALSE
:
760 internal_error (__FILE__
, __LINE__
, _("bad switch"));
763 switch (problem
->should_dump_core
)
765 case AUTO_BOOLEAN_AUTO
:
766 /* Default (yes/batch case) is to dump core. This leaves a GDB
767 `dropping' so that it is easier to see that something went
769 dump_core_p
= query (_("%s\nCreate a core file of GDB? "), reason
);
772 case AUTO_BOOLEAN_TRUE
:
775 case AUTO_BOOLEAN_FALSE
:
779 internal_error (__FILE__
, __LINE__
, _("bad switch"));
785 abort (); /* NOTE: GDB has only three calls to abort(). */
793 #ifdef HAVE_WORKING_FORK
795 abort (); /* NOTE: GDB has only three calls to abort(). */
803 static struct internal_problem internal_error_problem
= {
804 "internal-error", AUTO_BOOLEAN_AUTO
, AUTO_BOOLEAN_AUTO
808 internal_verror (const char *file
, int line
, const char *fmt
, va_list ap
)
810 internal_vproblem (&internal_error_problem
, file
, line
, fmt
, ap
);
811 deprecated_throw_reason (RETURN_ERROR
);
815 internal_error (const char *file
, int line
, const char *string
, ...)
818 va_start (ap
, string
);
819 internal_verror (file
, line
, string
, ap
);
823 static struct internal_problem internal_warning_problem
= {
824 "internal-warning", AUTO_BOOLEAN_AUTO
, AUTO_BOOLEAN_AUTO
828 internal_vwarning (const char *file
, int line
, const char *fmt
, va_list ap
)
830 internal_vproblem (&internal_warning_problem
, file
, line
, fmt
, ap
);
834 internal_warning (const char *file
, int line
, const char *string
, ...)
837 va_start (ap
, string
);
838 internal_vwarning (file
, line
, string
, ap
);
842 /* The strerror() function can return NULL for errno values that are
843 out of range. Provide a "safe" version that always returns a
847 safe_strerror (int errnum
)
851 msg
= strerror (errnum
);
855 xsnprintf (buf
, sizeof buf
, "(undocumented errno %d)", errnum
);
861 /* Print the system error message for errno, and also mention STRING
862 as the file name for which the error was encountered.
863 Then return to command level. */
866 perror_with_name (const char *string
)
871 err
= safe_strerror (errno
);
872 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
873 strcpy (combined
, string
);
874 strcat (combined
, ": ");
875 strcat (combined
, err
);
877 /* I understand setting these is a matter of taste. Still, some people
878 may clear errno but not know about bfd_error. Doing this here is not
880 bfd_set_error (bfd_error_no_error
);
883 error (_("%s."), combined
);
886 /* Print the system error message for ERRCODE, and also mention STRING
887 as the file name for which the error was encountered. */
890 print_sys_errmsg (const char *string
, int errcode
)
895 err
= safe_strerror (errcode
);
896 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
897 strcpy (combined
, string
);
898 strcat (combined
, ": ");
899 strcat (combined
, err
);
901 /* We want anything which was printed on stdout to come out first, before
903 gdb_flush (gdb_stdout
);
904 fprintf_unfiltered (gdb_stderr
, "%s.\n", combined
);
907 /* Control C eventually causes this to be called, at a convenient time. */
913 /* No steenking SIGINT will ever be coming our way when the
914 program is resumed. Don't lie. */
918 /* If there is no terminal switching for this target, then we can't
919 possibly get screwed by the lack of job control. */
920 || current_target
.to_terminal_ours
== NULL
)
923 fatal ("Quit (expect signal SIGINT when the program is resumed)");
927 /* Control C comes here */
929 request_quit (int signo
)
932 /* Restore the signal handler. Harmless with BSD-style signals,
933 needed for System V-style signals. */
934 signal (signo
, request_quit
);
940 /* Called when a memory allocation fails, with the number of bytes of
941 memory requested in SIZE. */
948 internal_error (__FILE__
, __LINE__
,
949 _("virtual memory exhausted: can't allocate %ld bytes."),
954 internal_error (__FILE__
, __LINE__
, _("virtual memory exhausted."));
958 /* The xmalloc() (libiberty.h) family of memory management routines.
960 These are like the ISO-C malloc() family except that they implement
961 consistent semantics and guard against typical memory management
964 /* NOTE: These are declared using PTR to ensure consistency with
965 "libiberty.h". xfree() is GDB local. */
968 xmalloc (size_t size
)
972 /* See libiberty/xmalloc.c. This function need's to match that's
973 semantics. It never returns NULL. */
977 val
= malloc (size
); /* OK: malloc */
985 xzalloc (size_t size
)
987 return xcalloc (1, size
);
991 xrealloc (PTR ptr
, size_t size
) /* OK: PTR */
995 /* See libiberty/xmalloc.c. This function need's to match that's
996 semantics. It never returns NULL. */
1001 val
= realloc (ptr
, size
); /* OK: realloc */
1003 val
= malloc (size
); /* OK: malloc */
1011 xcalloc (size_t number
, size_t size
)
1015 /* See libiberty/xmalloc.c. This function need's to match that's
1016 semantics. It never returns NULL. */
1017 if (number
== 0 || size
== 0)
1023 mem
= calloc (number
, size
); /* OK: xcalloc */
1025 nomem (number
* size
);
1034 free (ptr
); /* OK: free */
1038 /* Like asprintf/vasprintf but get an internal_error if the call
1042 xstrprintf (const char *format
, ...)
1046 va_start (args
, format
);
1047 ret
= xstrvprintf (format
, args
);
1053 xasprintf (char **ret
, const char *format
, ...)
1056 va_start (args
, format
);
1057 (*ret
) = xstrvprintf (format
, args
);
1062 xvasprintf (char **ret
, const char *format
, va_list ap
)
1064 (*ret
) = xstrvprintf (format
, ap
);
1068 xstrvprintf (const char *format
, va_list ap
)
1071 int status
= vasprintf (&ret
, format
, ap
);
1072 /* NULL is returned when there was a memory allocation problem, or
1073 any other error (for instance, a bad format string). A negative
1074 status (the printed length) with a non-NULL buffer should never
1075 happen, but just to be sure. */
1076 if (ret
== NULL
|| status
< 0)
1077 internal_error (__FILE__
, __LINE__
, _("vasprintf call failed"));
1082 xsnprintf (char *str
, size_t size
, const char *format
, ...)
1087 va_start (args
, format
);
1088 ret
= vsnprintf (str
, size
, format
, args
);
1089 gdb_assert (ret
< size
);
1095 /* My replacement for the read system call.
1096 Used like `read' but keeps going if `read' returns too soon. */
1099 myread (int desc
, char *addr
, int len
)
1106 val
= read (desc
, addr
, len
);
1110 return orglen
- len
;
1117 /* Make a copy of the string at PTR with SIZE characters
1118 (and add a null character at the end in the copy).
1119 Uses malloc to get the space. Returns the address of the copy. */
1122 savestring (const char *ptr
, size_t size
)
1124 char *p
= (char *) xmalloc (size
+ 1);
1125 memcpy (p
, ptr
, size
);
1131 print_spaces (int n
, struct ui_file
*file
)
1133 fputs_unfiltered (n_spaces (n
), file
);
1136 /* Print a host address. */
1139 gdb_print_host_address (const void *addr
, struct ui_file
*stream
)
1142 /* We could use the %p conversion specifier to fprintf if we had any
1143 way of knowing whether this host supports it. But the following
1144 should work on the Alpha and on 32 bit machines. */
1146 fprintf_filtered (stream
, "0x%lx", (unsigned long) addr
);
1149 /* Ask user a y-or-n question and return 1 iff answer is yes.
1150 Takes three args which are given to printf to print the question.
1151 The first, a control string, should end in "? ".
1152 It should not say how to answer, because we do that. */
1156 query (const char *ctlstr
, ...)
1163 if (deprecated_query_hook
)
1165 va_start (args
, ctlstr
);
1166 return deprecated_query_hook (ctlstr
, args
);
1169 /* Automatically answer "yes" if input is not from a terminal. */
1170 if (!input_from_terminal_p ())
1175 wrap_here (""); /* Flush any buffered output */
1176 gdb_flush (gdb_stdout
);
1178 if (annotation_level
> 1)
1179 printf_filtered (("\n\032\032pre-query\n"));
1181 va_start (args
, ctlstr
);
1182 vfprintf_filtered (gdb_stdout
, ctlstr
, args
);
1184 printf_filtered (_("(y or n) "));
1186 if (annotation_level
> 1)
1187 printf_filtered (("\n\032\032query\n"));
1190 gdb_flush (gdb_stdout
);
1192 answer
= fgetc (stdin
);
1193 clearerr (stdin
); /* in case of C-d */
1194 if (answer
== EOF
) /* C-d */
1199 /* Eat rest of input line, to EOF or newline */
1203 ans2
= fgetc (stdin
);
1206 while (ans2
!= EOF
&& ans2
!= '\n' && ans2
!= '\r');
1220 printf_filtered (_("Please answer y or n.\n"));
1223 if (annotation_level
> 1)
1224 printf_filtered (("\n\032\032post-query\n"));
1229 /* This function supports the nquery() and yquery() functions.
1230 Ask user a y-or-n question and return 0 if answer is no, 1 if
1231 answer is yes, or default the answer to the specified default.
1232 DEFCHAR is either 'y' or 'n' and refers to the default answer.
1233 CTLSTR is the control string and should end in "? ". It should
1234 not say how to answer, because we do that.
1235 ARGS are the arguments passed along with the CTLSTR argument to
1238 static int ATTR_FORMAT (printf
, 1, 0)
1239 defaulted_query (const char *ctlstr
, const char defchar
, va_list args
)
1245 char def_answer
, not_def_answer
;
1246 char *y_string
, *n_string
;
1248 /* Set up according to which answer is the default. */
1253 not_def_answer
= 'N';
1261 not_def_answer
= 'Y';
1266 if (deprecated_query_hook
)
1268 return deprecated_query_hook (ctlstr
, args
);
1271 /* Automatically answer default value if input is not from a terminal. */
1272 if (!input_from_terminal_p ())
1277 wrap_here (""); /* Flush any buffered output */
1278 gdb_flush (gdb_stdout
);
1280 if (annotation_level
> 1)
1281 printf_filtered (("\n\032\032pre-query\n"));
1283 vfprintf_filtered (gdb_stdout
, ctlstr
, args
);
1284 printf_filtered (_("(%s or %s) "), y_string
, n_string
);
1286 if (annotation_level
> 1)
1287 printf_filtered (("\n\032\032query\n"));
1290 gdb_flush (gdb_stdout
);
1292 answer
= fgetc (stdin
);
1293 clearerr (stdin
); /* in case of C-d */
1294 if (answer
== EOF
) /* C-d */
1299 /* Eat rest of input line, to EOF or newline */
1303 ans2
= fgetc (stdin
);
1306 while (ans2
!= EOF
&& ans2
!= '\n' && ans2
!= '\r');
1310 /* Check answer. For the non-default, the user must specify
1311 the non-default explicitly. */
1312 if (answer
== not_def_answer
)
1314 retval
= !def_value
;
1317 /* Otherwise, for the default, the user may either specify
1318 the required input or have it default by entering nothing. */
1319 if (answer
== def_answer
|| answer
== '\n' ||
1320 answer
== '\r' || answer
== EOF
)
1325 /* Invalid entries are not defaulted and require another selection. */
1326 printf_filtered (_("Please answer %s or %s.\n"),
1327 y_string
, n_string
);
1330 if (annotation_level
> 1)
1331 printf_filtered (("\n\032\032post-query\n"));
1336 /* Ask user a y-or-n question and return 0 if answer is no, 1 if
1337 answer is yes, or 0 if answer is defaulted.
1338 Takes three args which are given to printf to print the question.
1339 The first, a control string, should end in "? ".
1340 It should not say how to answer, because we do that. */
1343 nquery (const char *ctlstr
, ...)
1347 va_start (args
, ctlstr
);
1348 return defaulted_query (ctlstr
, 'n', args
);
1352 /* Ask user a y-or-n question and return 0 if answer is no, 1 if
1353 answer is yes, or 1 if answer is defaulted.
1354 Takes three args which are given to printf to print the question.
1355 The first, a control string, should end in "? ".
1356 It should not say how to answer, because we do that. */
1359 yquery (const char *ctlstr
, ...)
1363 va_start (args
, ctlstr
);
1364 return defaulted_query (ctlstr
, 'y', args
);
1368 /* Print an error message saying that we couldn't make sense of a
1369 \^mumble sequence in a string or character constant. START and END
1370 indicate a substring of some larger string that contains the
1371 erroneous backslash sequence, missing the initial backslash. */
1373 no_control_char_error (const char *start
, const char *end
)
1375 int len
= end
- start
;
1376 char *copy
= alloca (end
- start
+ 1);
1378 memcpy (copy
, start
, len
);
1381 error (_("There is no control character `\\%s' in the `%s' character set."),
1382 copy
, target_charset ());
1385 /* Parse a C escape sequence. STRING_PTR points to a variable
1386 containing a pointer to the string to parse. That pointer
1387 should point to the character after the \. That pointer
1388 is updated past the characters we use. The value of the
1389 escape sequence is returned.
1391 A negative value means the sequence \ newline was seen,
1392 which is supposed to be equivalent to nothing at all.
1394 If \ is followed by a null character, we return a negative
1395 value and leave the string pointer pointing at the null character.
1397 If \ is followed by 000, we return 0 and leave the string pointer
1398 after the zeros. A value of 0 does not mean end of string. */
1401 parse_escape (char **string_ptr
)
1404 int c
= *(*string_ptr
)++;
1405 if (c_parse_backslash (c
, &target_char
))
1417 /* Remember where this escape sequence started, for reporting
1419 char *sequence_start_pos
= *string_ptr
- 1;
1421 c
= *(*string_ptr
)++;
1425 /* XXXCHARSET: What is `delete' in the host character set? */
1428 if (!host_char_to_target (c
, &target_char
))
1429 error (_("There is no character corresponding to `Delete' "
1430 "in the target character set `%s'."), host_charset ());
1435 target_char
= parse_escape (string_ptr
);
1438 if (!host_char_to_target (c
, &target_char
))
1439 no_control_char_error (sequence_start_pos
, *string_ptr
);
1442 /* Now target_char is something like `c', and we want to find
1443 its control-character equivalent. */
1444 if (!target_char_to_control_char (target_char
, &target_char
))
1445 no_control_char_error (sequence_start_pos
, *string_ptr
);
1450 /* XXXCHARSET: we need to use isdigit and value-of-digit
1451 methods of the host character set here. */
1467 if (c
>= '0' && c
<= '7')
1481 if (!host_char_to_target (c
, &target_char
))
1483 ("The escape sequence `\%c' is equivalent to plain `%c', which"
1484 " has no equivalent\n" "in the `%s' character set.", c
, c
,
1490 /* Print the character C on STREAM as part of the contents of a literal
1491 string whose delimiter is QUOTER. Note that this routine should only
1492 be call for printing things which are independent of the language
1493 of the program being debugged. */
1496 printchar (int c
, void (*do_fputs
) (const char *, struct ui_file
*),
1497 void (*do_fprintf
) (struct ui_file
*, const char *, ...)
1498 ATTRIBUTE_FPTR_PRINTF_2
, struct ui_file
*stream
, int quoter
)
1501 c
&= 0xFF; /* Avoid sign bit follies */
1503 if (c
< 0x20 || /* Low control chars */
1504 (c
>= 0x7F && c
< 0xA0) || /* DEL, High controls */
1505 (sevenbit_strings
&& c
>= 0x80))
1506 { /* high order bit set */
1510 do_fputs ("\\n", stream
);
1513 do_fputs ("\\b", stream
);
1516 do_fputs ("\\t", stream
);
1519 do_fputs ("\\f", stream
);
1522 do_fputs ("\\r", stream
);
1525 do_fputs ("\\e", stream
);
1528 do_fputs ("\\a", stream
);
1531 do_fprintf (stream
, "\\%.3o", (unsigned int) c
);
1537 if (c
== '\\' || c
== quoter
)
1538 do_fputs ("\\", stream
);
1539 do_fprintf (stream
, "%c", c
);
1543 /* Print the character C on STREAM as part of the contents of a
1544 literal string whose delimiter is QUOTER. Note that these routines
1545 should only be call for printing things which are independent of
1546 the language of the program being debugged. */
1549 fputstr_filtered (const char *str
, int quoter
, struct ui_file
*stream
)
1552 printchar (*str
++, fputs_filtered
, fprintf_filtered
, stream
, quoter
);
1556 fputstr_unfiltered (const char *str
, int quoter
, struct ui_file
*stream
)
1559 printchar (*str
++, fputs_unfiltered
, fprintf_unfiltered
, stream
, quoter
);
1563 fputstrn_unfiltered (const char *str
, int n
, int quoter
,
1564 struct ui_file
*stream
)
1567 for (i
= 0; i
< n
; i
++)
1568 printchar (str
[i
], fputs_unfiltered
, fprintf_unfiltered
, stream
, quoter
);
1572 /* Number of lines per page or UINT_MAX if paging is disabled. */
1573 static unsigned int lines_per_page
;
1575 show_lines_per_page (struct ui_file
*file
, int from_tty
,
1576 struct cmd_list_element
*c
, const char *value
)
1578 fprintf_filtered (file
, _("\
1579 Number of lines gdb thinks are in a page is %s.\n"),
1583 /* Number of chars per line or UINT_MAX if line folding is disabled. */
1584 static unsigned int chars_per_line
;
1586 show_chars_per_line (struct ui_file
*file
, int from_tty
,
1587 struct cmd_list_element
*c
, const char *value
)
1589 fprintf_filtered (file
, _("\
1590 Number of characters gdb thinks are in a line is %s.\n"),
1594 /* Current count of lines printed on this page, chars on this line. */
1595 static unsigned int lines_printed
, chars_printed
;
1597 /* Buffer and start column of buffered text, for doing smarter word-
1598 wrapping. When someone calls wrap_here(), we start buffering output
1599 that comes through fputs_filtered(). If we see a newline, we just
1600 spit it out and forget about the wrap_here(). If we see another
1601 wrap_here(), we spit it out and remember the newer one. If we see
1602 the end of the line, we spit out a newline, the indent, and then
1603 the buffered output. */
1605 /* Malloc'd buffer with chars_per_line+2 bytes. Contains characters which
1606 are waiting to be output (they have already been counted in chars_printed).
1607 When wrap_buffer[0] is null, the buffer is empty. */
1608 static char *wrap_buffer
;
1610 /* Pointer in wrap_buffer to the next character to fill. */
1611 static char *wrap_pointer
;
1613 /* String to indent by if the wrap occurs. Must not be NULL if wrap_column
1615 static char *wrap_indent
;
1617 /* Column number on the screen where wrap_buffer begins, or 0 if wrapping
1618 is not in effect. */
1619 static int wrap_column
;
1622 /* Inialize the number of lines per page and chars per line. */
1625 init_page_info (void)
1628 if (!tui_get_command_dimension (&chars_per_line
, &lines_per_page
))
1633 #if defined(__GO32__)
1634 rows
= ScreenRows ();
1635 cols
= ScreenCols ();
1636 lines_per_page
= rows
;
1637 chars_per_line
= cols
;
1639 /* Make sure Readline has initialized its terminal settings. */
1640 rl_reset_terminal (NULL
);
1642 /* Get the screen size from Readline. */
1643 rl_get_screen_size (&rows
, &cols
);
1644 lines_per_page
= rows
;
1645 chars_per_line
= cols
;
1647 /* Readline should have fetched the termcap entry for us. */
1648 if (tgetnum ("li") < 0 || getenv ("EMACS"))
1650 /* The number of lines per page is not mentioned in the
1651 terminal description. This probably means that paging is
1652 not useful (e.g. emacs shell window), so disable paging. */
1653 lines_per_page
= UINT_MAX
;
1656 /* FIXME: Get rid of this junk. */
1657 #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER)
1658 SIGWINCH_HANDLER (SIGWINCH
);
1661 /* If the output is not a terminal, don't paginate it. */
1662 if (!ui_file_isatty (gdb_stdout
))
1663 lines_per_page
= UINT_MAX
;
1671 /* Set the screen size based on LINES_PER_PAGE and CHARS_PER_LINE. */
1674 set_screen_size (void)
1676 int rows
= lines_per_page
;
1677 int cols
= chars_per_line
;
1683 rl_get_screen_size (NULL
, &cols
);
1685 /* Update Readline's idea of the terminal size. */
1686 rl_set_screen_size (rows
, cols
);
1689 /* Reinitialize WRAP_BUFFER according to the current value of
1695 if (chars_per_line
== 0)
1700 wrap_buffer
= (char *) xmalloc (chars_per_line
+ 2);
1701 wrap_buffer
[0] = '\0';
1704 wrap_buffer
= (char *) xrealloc (wrap_buffer
, chars_per_line
+ 2);
1705 wrap_pointer
= wrap_buffer
; /* Start it at the beginning. */
1709 set_width_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
1716 set_height_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
1721 /* Wait, so the user can read what's on the screen. Prompt the user
1722 to continue by pressing RETURN. */
1725 prompt_for_continue (void)
1728 char cont_prompt
[120];
1730 if (annotation_level
> 1)
1731 printf_unfiltered (("\n\032\032pre-prompt-for-continue\n"));
1733 strcpy (cont_prompt
,
1734 "---Type <return> to continue, or q <return> to quit---");
1735 if (annotation_level
> 1)
1736 strcat (cont_prompt
, "\n\032\032prompt-for-continue\n");
1738 /* We must do this *before* we call gdb_readline, else it will eventually
1739 call us -- thinking that we're trying to print beyond the end of the
1741 reinitialize_more_filter ();
1744 /* On a real operating system, the user can quit with SIGINT.
1747 'q' is provided on all systems so users don't have to change habits
1748 from system to system, and because telling them what to do in
1749 the prompt is more user-friendly than expecting them to think of
1751 /* Call readline, not gdb_readline, because GO32 readline handles control-C
1752 whereas control-C to gdb_readline will cause the user to get dumped
1754 ignore
= gdb_readline_wrapper (cont_prompt
);
1756 if (annotation_level
> 1)
1757 printf_unfiltered (("\n\032\032post-prompt-for-continue\n"));
1762 while (*p
== ' ' || *p
== '\t')
1765 async_request_quit (0);
1770 /* Now we have to do this again, so that GDB will know that it doesn't
1771 need to save the ---Type <return>--- line at the top of the screen. */
1772 reinitialize_more_filter ();
1774 dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */
1777 /* Reinitialize filter; ie. tell it to reset to original values. */
1780 reinitialize_more_filter (void)
1786 /* Indicate that if the next sequence of characters overflows the line,
1787 a newline should be inserted here rather than when it hits the end.
1788 If INDENT is non-null, it is a string to be printed to indent the
1789 wrapped part on the next line. INDENT must remain accessible until
1790 the next call to wrap_here() or until a newline is printed through
1793 If the line is already overfull, we immediately print a newline and
1794 the indentation, and disable further wrapping.
1796 If we don't know the width of lines, but we know the page height,
1797 we must not wrap words, but should still keep track of newlines
1798 that were explicitly printed.
1800 INDENT should not contain tabs, as that will mess up the char count
1801 on the next line. FIXME.
1803 This routine is guaranteed to force out any output which has been
1804 squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be
1805 used to force out output from the wrap_buffer. */
1808 wrap_here (char *indent
)
1810 /* This should have been allocated, but be paranoid anyway. */
1812 internal_error (__FILE__
, __LINE__
, _("failed internal consistency check"));
1816 *wrap_pointer
= '\0';
1817 fputs_unfiltered (wrap_buffer
, gdb_stdout
);
1819 wrap_pointer
= wrap_buffer
;
1820 wrap_buffer
[0] = '\0';
1821 if (chars_per_line
== UINT_MAX
) /* No line overflow checking */
1825 else if (chars_printed
>= chars_per_line
)
1827 puts_filtered ("\n");
1829 puts_filtered (indent
);
1834 wrap_column
= chars_printed
;
1838 wrap_indent
= indent
;
1842 /* Print input string to gdb_stdout, filtered, with wrap,
1843 arranging strings in columns of n chars. String can be
1844 right or left justified in the column. Never prints
1845 trailing spaces. String should never be longer than
1846 width. FIXME: this could be useful for the EXAMINE
1847 command, which currently doesn't tabulate very well */
1850 puts_filtered_tabular (char *string
, int width
, int right
)
1856 gdb_assert (chars_per_line
> 0);
1857 if (chars_per_line
== UINT_MAX
)
1859 fputs_filtered (string
, gdb_stdout
);
1860 fputs_filtered ("\n", gdb_stdout
);
1864 if (((chars_printed
- 1) / width
+ 2) * width
>= chars_per_line
)
1865 fputs_filtered ("\n", gdb_stdout
);
1867 if (width
>= chars_per_line
)
1868 width
= chars_per_line
- 1;
1870 stringlen
= strlen (string
);
1872 if (chars_printed
> 0)
1873 spaces
= width
- (chars_printed
- 1) % width
- 1;
1875 spaces
+= width
- stringlen
;
1877 spacebuf
= alloca (spaces
+ 1);
1878 spacebuf
[spaces
] = '\0';
1880 spacebuf
[spaces
] = ' ';
1882 fputs_filtered (spacebuf
, gdb_stdout
);
1883 fputs_filtered (string
, gdb_stdout
);
1887 /* Ensure that whatever gets printed next, using the filtered output
1888 commands, starts at the beginning of the line. I.E. if there is
1889 any pending output for the current line, flush it and start a new
1890 line. Otherwise do nothing. */
1895 if (chars_printed
> 0)
1897 puts_filtered ("\n");
1902 /* Like fputs but if FILTER is true, pause after every screenful.
1904 Regardless of FILTER can wrap at points other than the final
1905 character of a line.
1907 Unlike fputs, fputs_maybe_filtered does not return a value.
1908 It is OK for LINEBUFFER to be NULL, in which case just don't print
1911 Note that a longjmp to top level may occur in this routine (only if
1912 FILTER is true) (since prompt_for_continue may do so) so this
1913 routine should not be called when cleanups are not in place. */
1916 fputs_maybe_filtered (const char *linebuffer
, struct ui_file
*stream
,
1919 const char *lineptr
;
1921 if (linebuffer
== 0)
1924 /* Don't do any filtering if it is disabled. */
1925 if ((stream
!= gdb_stdout
) || !pagination_enabled
1926 || (lines_per_page
== UINT_MAX
&& chars_per_line
== UINT_MAX
))
1928 fputs_unfiltered (linebuffer
, stream
);
1932 /* Go through and output each character. Show line extension
1933 when this is necessary; prompt user for new page when this is
1936 lineptr
= linebuffer
;
1939 /* Possible new page. */
1940 if (filter
&& (lines_printed
>= lines_per_page
- 1))
1941 prompt_for_continue ();
1943 while (*lineptr
&& *lineptr
!= '\n')
1945 /* Print a single line. */
1946 if (*lineptr
== '\t')
1949 *wrap_pointer
++ = '\t';
1951 fputc_unfiltered ('\t', stream
);
1952 /* Shifting right by 3 produces the number of tab stops
1953 we have already passed, and then adding one and
1954 shifting left 3 advances to the next tab stop. */
1955 chars_printed
= ((chars_printed
>> 3) + 1) << 3;
1961 *wrap_pointer
++ = *lineptr
;
1963 fputc_unfiltered (*lineptr
, stream
);
1968 if (chars_printed
>= chars_per_line
)
1970 unsigned int save_chars
= chars_printed
;
1974 /* If we aren't actually wrapping, don't output newline --
1975 if chars_per_line is right, we probably just overflowed
1976 anyway; if it's wrong, let us keep going. */
1978 fputc_unfiltered ('\n', stream
);
1980 /* Possible new page. */
1981 if (lines_printed
>= lines_per_page
- 1)
1982 prompt_for_continue ();
1984 /* Now output indentation and wrapped string */
1987 fputs_unfiltered (wrap_indent
, stream
);
1988 *wrap_pointer
= '\0'; /* Null-terminate saved stuff */
1989 fputs_unfiltered (wrap_buffer
, stream
); /* and eject it */
1990 /* FIXME, this strlen is what prevents wrap_indent from
1991 containing tabs. However, if we recurse to print it
1992 and count its chars, we risk trouble if wrap_indent is
1993 longer than (the user settable) chars_per_line.
1994 Note also that this can set chars_printed > chars_per_line
1995 if we are printing a long string. */
1996 chars_printed
= strlen (wrap_indent
)
1997 + (save_chars
- wrap_column
);
1998 wrap_pointer
= wrap_buffer
; /* Reset buffer */
1999 wrap_buffer
[0] = '\0';
2000 wrap_column
= 0; /* And disable fancy wrap */
2005 if (*lineptr
== '\n')
2008 wrap_here ((char *) 0); /* Spit out chars, cancel further wraps */
2010 fputc_unfiltered ('\n', stream
);
2017 fputs_filtered (const char *linebuffer
, struct ui_file
*stream
)
2019 fputs_maybe_filtered (linebuffer
, stream
, 1);
2023 putchar_unfiltered (int c
)
2026 ui_file_write (gdb_stdout
, &buf
, 1);
2030 /* Write character C to gdb_stdout using GDB's paging mechanism and return C.
2031 May return nonlocally. */
2034 putchar_filtered (int c
)
2036 return fputc_filtered (c
, gdb_stdout
);
2040 fputc_unfiltered (int c
, struct ui_file
*stream
)
2043 ui_file_write (stream
, &buf
, 1);
2048 fputc_filtered (int c
, struct ui_file
*stream
)
2054 fputs_filtered (buf
, stream
);
2058 /* puts_debug is like fputs_unfiltered, except it prints special
2059 characters in printable fashion. */
2062 puts_debug (char *prefix
, char *string
, char *suffix
)
2066 /* Print prefix and suffix after each line. */
2067 static int new_line
= 1;
2068 static int return_p
= 0;
2069 static char *prev_prefix
= "";
2070 static char *prev_suffix
= "";
2072 if (*string
== '\n')
2075 /* If the prefix is changing, print the previous suffix, a new line,
2076 and the new prefix. */
2077 if ((return_p
|| (strcmp (prev_prefix
, prefix
) != 0)) && !new_line
)
2079 fputs_unfiltered (prev_suffix
, gdb_stdlog
);
2080 fputs_unfiltered ("\n", gdb_stdlog
);
2081 fputs_unfiltered (prefix
, gdb_stdlog
);
2084 /* Print prefix if we printed a newline during the previous call. */
2088 fputs_unfiltered (prefix
, gdb_stdlog
);
2091 prev_prefix
= prefix
;
2092 prev_suffix
= suffix
;
2094 /* Output characters in a printable format. */
2095 while ((ch
= *string
++) != '\0')
2101 fputc_unfiltered (ch
, gdb_stdlog
);
2104 fprintf_unfiltered (gdb_stdlog
, "\\x%02x", ch
& 0xff);
2108 fputs_unfiltered ("\\\\", gdb_stdlog
);
2111 fputs_unfiltered ("\\b", gdb_stdlog
);
2114 fputs_unfiltered ("\\f", gdb_stdlog
);
2118 fputs_unfiltered ("\\n", gdb_stdlog
);
2121 fputs_unfiltered ("\\r", gdb_stdlog
);
2124 fputs_unfiltered ("\\t", gdb_stdlog
);
2127 fputs_unfiltered ("\\v", gdb_stdlog
);
2131 return_p
= ch
== '\r';
2134 /* Print suffix if we printed a newline. */
2137 fputs_unfiltered (suffix
, gdb_stdlog
);
2138 fputs_unfiltered ("\n", gdb_stdlog
);
2143 /* Print a variable number of ARGS using format FORMAT. If this
2144 information is going to put the amount written (since the last call
2145 to REINITIALIZE_MORE_FILTER or the last page break) over the page size,
2146 call prompt_for_continue to get the users permision to continue.
2148 Unlike fprintf, this function does not return a value.
2150 We implement three variants, vfprintf (takes a vararg list and stream),
2151 fprintf (takes a stream to write on), and printf (the usual).
2153 Note also that a longjmp to top level may occur in this routine
2154 (since prompt_for_continue may do so) so this routine should not be
2155 called when cleanups are not in place. */
2158 vfprintf_maybe_filtered (struct ui_file
*stream
, const char *format
,
2159 va_list args
, int filter
)
2162 struct cleanup
*old_cleanups
;
2164 linebuffer
= xstrvprintf (format
, args
);
2165 old_cleanups
= make_cleanup (xfree
, linebuffer
);
2166 fputs_maybe_filtered (linebuffer
, stream
, filter
);
2167 do_cleanups (old_cleanups
);
2172 vfprintf_filtered (struct ui_file
*stream
, const char *format
, va_list args
)
2174 vfprintf_maybe_filtered (stream
, format
, args
, 1);
2178 vfprintf_unfiltered (struct ui_file
*stream
, const char *format
, va_list args
)
2181 struct cleanup
*old_cleanups
;
2183 linebuffer
= xstrvprintf (format
, args
);
2184 old_cleanups
= make_cleanup (xfree
, linebuffer
);
2185 fputs_unfiltered (linebuffer
, stream
);
2186 do_cleanups (old_cleanups
);
2190 vprintf_filtered (const char *format
, va_list args
)
2192 vfprintf_maybe_filtered (gdb_stdout
, format
, args
, 1);
2196 vprintf_unfiltered (const char *format
, va_list args
)
2198 vfprintf_unfiltered (gdb_stdout
, format
, args
);
2202 fprintf_filtered (struct ui_file
*stream
, const char *format
, ...)
2205 va_start (args
, format
);
2206 vfprintf_filtered (stream
, format
, args
);
2211 fprintf_unfiltered (struct ui_file
*stream
, const char *format
, ...)
2214 va_start (args
, format
);
2215 vfprintf_unfiltered (stream
, format
, args
);
2219 /* Like fprintf_filtered, but prints its result indented.
2220 Called as fprintfi_filtered (spaces, stream, format, ...); */
2223 fprintfi_filtered (int spaces
, struct ui_file
*stream
, const char *format
,
2227 va_start (args
, format
);
2228 print_spaces_filtered (spaces
, stream
);
2230 vfprintf_filtered (stream
, format
, args
);
2236 printf_filtered (const char *format
, ...)
2239 va_start (args
, format
);
2240 vfprintf_filtered (gdb_stdout
, format
, args
);
2246 printf_unfiltered (const char *format
, ...)
2249 va_start (args
, format
);
2250 vfprintf_unfiltered (gdb_stdout
, format
, args
);
2254 /* Like printf_filtered, but prints it's result indented.
2255 Called as printfi_filtered (spaces, format, ...); */
2258 printfi_filtered (int spaces
, const char *format
, ...)
2261 va_start (args
, format
);
2262 print_spaces_filtered (spaces
, gdb_stdout
);
2263 vfprintf_filtered (gdb_stdout
, format
, args
);
2267 /* Easy -- but watch out!
2269 This routine is *not* a replacement for puts()! puts() appends a newline.
2270 This one doesn't, and had better not! */
2273 puts_filtered (const char *string
)
2275 fputs_filtered (string
, gdb_stdout
);
2279 puts_unfiltered (const char *string
)
2281 fputs_unfiltered (string
, gdb_stdout
);
2284 /* Return a pointer to N spaces and a null. The pointer is good
2285 until the next call to here. */
2290 static char *spaces
= 0;
2291 static int max_spaces
= -1;
2297 spaces
= (char *) xmalloc (n
+ 1);
2298 for (t
= spaces
+ n
; t
!= spaces
;)
2304 return spaces
+ max_spaces
- n
;
2307 /* Print N spaces. */
2309 print_spaces_filtered (int n
, struct ui_file
*stream
)
2311 fputs_filtered (n_spaces (n
), stream
);
2314 /* C++/ObjC demangler stuff. */
2316 /* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language
2317 LANG, using demangling args ARG_MODE, and print it filtered to STREAM.
2318 If the name is not mangled, or the language for the name is unknown, or
2319 demangling is off, the name is printed in its "raw" form. */
2322 fprintf_symbol_filtered (struct ui_file
*stream
, char *name
,
2323 enum language lang
, int arg_mode
)
2329 /* If user wants to see raw output, no problem. */
2332 fputs_filtered (name
, stream
);
2336 demangled
= language_demangle (language_def (lang
), name
, arg_mode
);
2337 fputs_filtered (demangled
? demangled
: name
, stream
);
2338 if (demangled
!= NULL
)
2346 /* Do a strcmp() type operation on STRING1 and STRING2, ignoring any
2347 differences in whitespace. Returns 0 if they match, non-zero if they
2348 don't (slightly different than strcmp()'s range of return values).
2350 As an extra hack, string1=="FOO(ARGS)" matches string2=="FOO".
2351 This "feature" is useful when searching for matching C++ function names
2352 (such as if the user types 'break FOO', where FOO is a mangled C++
2356 strcmp_iw (const char *string1
, const char *string2
)
2358 while ((*string1
!= '\0') && (*string2
!= '\0'))
2360 while (isspace (*string1
))
2364 while (isspace (*string2
))
2368 if (*string1
!= *string2
)
2372 if (*string1
!= '\0')
2378 return (*string1
!= '\0' && *string1
!= '(') || (*string2
!= '\0');
2381 /* This is like strcmp except that it ignores whitespace and treats
2382 '(' as the first non-NULL character in terms of ordering. Like
2383 strcmp (and unlike strcmp_iw), it returns negative if STRING1 <
2384 STRING2, 0 if STRING2 = STRING2, and positive if STRING1 > STRING2
2385 according to that ordering.
2387 If a list is sorted according to this function and if you want to
2388 find names in the list that match some fixed NAME according to
2389 strcmp_iw(LIST_ELT, NAME), then the place to start looking is right
2390 where this function would put NAME.
2392 Here are some examples of why using strcmp to sort is a bad idea:
2396 Say your partial symtab contains: "foo<char *>", "goo". Then, if
2397 we try to do a search for "foo<char*>", strcmp will locate this
2398 after "foo<char *>" and before "goo". Then lookup_partial_symbol
2399 will start looking at strings beginning with "goo", and will never
2400 see the correct match of "foo<char *>".
2402 Parenthesis example:
2404 In practice, this is less like to be an issue, but I'll give it a
2405 shot. Let's assume that '$' is a legitimate character to occur in
2406 symbols. (Which may well even be the case on some systems.) Then
2407 say that the partial symbol table contains "foo$" and "foo(int)".
2408 strcmp will put them in this order, since '$' < '('. Now, if the
2409 user searches for "foo", then strcmp will sort "foo" before "foo$".
2410 Then lookup_partial_symbol will notice that strcmp_iw("foo$",
2411 "foo") is false, so it won't proceed to the actual match of
2412 "foo(int)" with "foo". */
2415 strcmp_iw_ordered (const char *string1
, const char *string2
)
2417 while ((*string1
!= '\0') && (*string2
!= '\0'))
2419 while (isspace (*string1
))
2423 while (isspace (*string2
))
2427 if (*string1
!= *string2
)
2431 if (*string1
!= '\0')
2440 /* Characters are non-equal unless they're both '\0'; we want to
2441 make sure we get the comparison right according to our
2442 comparison in the cases where one of them is '\0' or '('. */
2444 if (*string2
== '\0')
2449 if (*string2
== '\0')
2454 if (*string2
== '(')
2457 return *string1
- *string2
;
2461 /* A simple comparison function with opposite semantics to strcmp. */
2464 streq (const char *lhs
, const char *rhs
)
2466 return !strcmp (lhs
, rhs
);
2472 ** Answer whether string_to_compare is a full or partial match to
2473 ** template_string. The partial match must be in sequence starting
2477 subset_compare (char *string_to_compare
, char *template_string
)
2480 if (template_string
!= (char *) NULL
&& string_to_compare
!= (char *) NULL
2481 && strlen (string_to_compare
) <= strlen (template_string
))
2484 (template_string
, string_to_compare
, strlen (string_to_compare
)) == 0);
2491 static void pagination_on_command (char *arg
, int from_tty
);
2493 pagination_on_command (char *arg
, int from_tty
)
2495 pagination_enabled
= 1;
2498 static void pagination_on_command (char *arg
, int from_tty
);
2500 pagination_off_command (char *arg
, int from_tty
)
2502 pagination_enabled
= 0;
2507 initialize_utils (void)
2509 struct cmd_list_element
*c
;
2511 add_setshow_uinteger_cmd ("width", class_support
, &chars_per_line
, _("\
2512 Set number of characters gdb thinks are in a line."), _("\
2513 Show number of characters gdb thinks are in a line."), NULL
,
2515 show_chars_per_line
,
2516 &setlist
, &showlist
);
2518 add_setshow_uinteger_cmd ("height", class_support
, &lines_per_page
, _("\
2519 Set number of lines gdb thinks are in a page."), _("\
2520 Show number of lines gdb thinks are in a page."), NULL
,
2522 show_lines_per_page
,
2523 &setlist
, &showlist
);
2527 add_setshow_boolean_cmd ("demangle", class_support
, &demangle
, _("\
2528 Set demangling of encoded C++/ObjC names when displaying symbols."), _("\
2529 Show demangling of encoded C++/ObjC names when displaying symbols."), NULL
,
2532 &setprintlist
, &showprintlist
);
2534 add_setshow_boolean_cmd ("pagination", class_support
,
2535 &pagination_enabled
, _("\
2536 Set state of pagination."), _("\
2537 Show state of pagination."), NULL
,
2539 show_pagination_enabled
,
2540 &setlist
, &showlist
);
2544 add_com ("am", class_support
, pagination_on_command
,
2545 _("Enable pagination"));
2546 add_com ("sm", class_support
, pagination_off_command
,
2547 _("Disable pagination"));
2550 add_setshow_boolean_cmd ("sevenbit-strings", class_support
,
2551 &sevenbit_strings
, _("\
2552 Set printing of 8-bit characters in strings as \\nnn."), _("\
2553 Show printing of 8-bit characters in strings as \\nnn."), NULL
,
2555 show_sevenbit_strings
,
2556 &setprintlist
, &showprintlist
);
2558 add_setshow_boolean_cmd ("asm-demangle", class_support
, &asm_demangle
, _("\
2559 Set demangling of C++/ObjC names in disassembly listings."), _("\
2560 Show demangling of C++/ObjC names in disassembly listings."), NULL
,
2563 &setprintlist
, &showprintlist
);
2566 /* Machine specific function to handle SIGWINCH signal. */
2568 #ifdef SIGWINCH_HANDLER_BODY
2569 SIGWINCH_HANDLER_BODY
2571 /* print routines to handle variable size regs, etc. */
2572 /* temporary storage using circular buffer */
2578 static char buf
[NUMCELLS
][CELLSIZE
];
2579 static int cell
= 0;
2580 if (++cell
>= NUMCELLS
)
2588 return (TARGET_ADDR_BIT
/ 8 * 2);
2592 paddr (CORE_ADDR addr
)
2594 return phex (addr
, TARGET_ADDR_BIT
/ 8);
2598 paddr_nz (CORE_ADDR addr
)
2600 return phex_nz (addr
, TARGET_ADDR_BIT
/ 8);
2604 paddress (CORE_ADDR addr
)
2606 /* Truncate address to the size of a target address, avoiding shifts
2607 larger or equal than the width of a CORE_ADDR. The local
2608 variable ADDR_BIT stops the compiler reporting a shift overflow
2609 when it won't occur. */
2610 /* NOTE: This assumes that the significant address information is
2611 kept in the least significant bits of ADDR - the upper bits were
2612 either zero or sign extended. Should ADDRESS_TO_POINTER() or
2613 some ADDRESS_TO_PRINTABLE() be used to do the conversion? */
2615 int addr_bit
= TARGET_ADDR_BIT
;
2617 if (addr_bit
< (sizeof (CORE_ADDR
) * HOST_CHAR_BIT
))
2618 addr
&= ((CORE_ADDR
) 1 << addr_bit
) - 1;
2619 return hex_string (addr
);
2623 decimal2str (char *sign
, ULONGEST addr
, int width
)
2625 /* Steal code from valprint.c:print_decimal(). Should this worry
2626 about the real size of addr as the above does? */
2627 unsigned long temp
[3];
2628 char *str
= get_cell ();
2633 temp
[i
] = addr
% (1000 * 1000 * 1000);
2634 addr
/= (1000 * 1000 * 1000);
2638 while (addr
!= 0 && i
< (sizeof (temp
) / sizeof (temp
[0])));
2647 xsnprintf (str
, CELLSIZE
, "%s%0*lu", sign
, width
, temp
[0]);
2650 xsnprintf (str
, CELLSIZE
, "%s%0*lu%09lu", sign
, width
,
2654 xsnprintf (str
, CELLSIZE
, "%s%0*lu%09lu%09lu", sign
, width
,
2655 temp
[2], temp
[1], temp
[0]);
2658 internal_error (__FILE__
, __LINE__
,
2659 _("failed internal consistency check"));
2666 octal2str (ULONGEST addr
, int width
)
2668 unsigned long temp
[3];
2669 char *str
= get_cell ();
2674 temp
[i
] = addr
% (0100000 * 0100000);
2675 addr
/= (0100000 * 0100000);
2679 while (addr
!= 0 && i
< (sizeof (temp
) / sizeof (temp
[0])));
2689 xsnprintf (str
, CELLSIZE
, "%*o", width
, 0);
2691 xsnprintf (str
, CELLSIZE
, "0%0*lo", width
, temp
[0]);
2694 xsnprintf (str
, CELLSIZE
, "0%0*lo%010lo", width
, temp
[1], temp
[0]);
2697 xsnprintf (str
, CELLSIZE
, "0%0*lo%010lo%010lo", width
,
2698 temp
[2], temp
[1], temp
[0]);
2701 internal_error (__FILE__
, __LINE__
,
2702 _("failed internal consistency check"));
2709 paddr_u (CORE_ADDR addr
)
2711 return decimal2str ("", addr
, 0);
2715 paddr_d (LONGEST addr
)
2718 return decimal2str ("-", -addr
, 0);
2720 return decimal2str ("", addr
, 0);
2723 /* Eliminate warning from compiler on 32-bit systems. */
2724 static int thirty_two
= 32;
2727 phex (ULONGEST l
, int sizeof_l
)
2735 xsnprintf (str
, CELLSIZE
, "%08lx%08lx",
2736 (unsigned long) (l
>> thirty_two
),
2737 (unsigned long) (l
& 0xffffffff));
2741 xsnprintf (str
, CELLSIZE
, "%08lx", (unsigned long) l
);
2745 xsnprintf (str
, CELLSIZE
, "%04x", (unsigned short) (l
& 0xffff));
2748 str
= phex (l
, sizeof (l
));
2756 phex_nz (ULONGEST l
, int sizeof_l
)
2764 unsigned long high
= (unsigned long) (l
>> thirty_two
);
2767 xsnprintf (str
, CELLSIZE
, "%lx",
2768 (unsigned long) (l
& 0xffffffff));
2770 xsnprintf (str
, CELLSIZE
, "%lx%08lx", high
,
2771 (unsigned long) (l
& 0xffffffff));
2776 xsnprintf (str
, CELLSIZE
, "%lx", (unsigned long) l
);
2780 xsnprintf (str
, CELLSIZE
, "%x", (unsigned short) (l
& 0xffff));
2783 str
= phex_nz (l
, sizeof (l
));
2790 /* Converts a LONGEST to a C-format hexadecimal literal and stores it
2791 in a static string. Returns a pointer to this string. */
2793 hex_string (LONGEST num
)
2795 char *result
= get_cell ();
2796 xsnprintf (result
, CELLSIZE
, "0x%s", phex_nz (num
, sizeof (num
)));
2800 /* Converts a LONGEST number to a C-format hexadecimal literal and
2801 stores it in a static string. Returns a pointer to this string
2802 that is valid until the next call. The number is padded on the
2803 left with 0s to at least WIDTH characters. */
2805 hex_string_custom (LONGEST num
, int width
)
2807 char *result
= get_cell ();
2808 char *result_end
= result
+ CELLSIZE
- 1;
2809 const char *hex
= phex_nz (num
, sizeof (num
));
2810 int hex_len
= strlen (hex
);
2812 if (hex_len
> width
)
2814 if (width
+ 2 >= CELLSIZE
)
2815 internal_error (__FILE__
, __LINE__
,
2816 _("hex_string_custom: insufficient space to store result"));
2818 strcpy (result_end
- width
- 2, "0x");
2819 memset (result_end
- width
, '0', width
);
2820 strcpy (result_end
- hex_len
, hex
);
2821 return result_end
- width
- 2;
2824 /* Convert VAL to a numeral in the given radix. For
2825 * radix 10, IS_SIGNED may be true, indicating a signed quantity;
2826 * otherwise VAL is interpreted as unsigned. If WIDTH is supplied,
2827 * it is the minimum width (0-padded if needed). USE_C_FORMAT means
2828 * to use C format in all cases. If it is false, then 'x'
2829 * and 'o' formats do not include a prefix (0x or leading 0). */
2832 int_string (LONGEST val
, int radix
, int is_signed
, int width
,
2841 result
= hex_string (val
);
2843 result
= hex_string_custom (val
, width
);
2850 if (is_signed
&& val
< 0)
2851 return decimal2str ("-", -val
, width
);
2853 return decimal2str ("", val
, width
);
2857 char *result
= octal2str (val
, width
);
2858 if (use_c_format
|| val
== 0)
2864 internal_error (__FILE__
, __LINE__
,
2865 _("failed internal consistency check"));
2869 /* Convert a CORE_ADDR into a string. */
2871 core_addr_to_string (const CORE_ADDR addr
)
2873 char *str
= get_cell ();
2875 strcat (str
, phex (addr
, sizeof (addr
)));
2880 core_addr_to_string_nz (const CORE_ADDR addr
)
2882 char *str
= get_cell ();
2884 strcat (str
, phex_nz (addr
, sizeof (addr
)));
2888 /* Convert a string back into a CORE_ADDR. */
2890 string_to_core_addr (const char *my_string
)
2893 if (my_string
[0] == '0' && tolower (my_string
[1]) == 'x')
2895 /* Assume that it is in decimal. */
2897 for (i
= 2; my_string
[i
] != '\0'; i
++)
2899 if (isdigit (my_string
[i
]))
2900 addr
= (my_string
[i
] - '0') + (addr
* 16);
2901 else if (isxdigit (my_string
[i
]))
2902 addr
= (tolower (my_string
[i
]) - 'a' + 0xa) + (addr
* 16);
2904 internal_error (__FILE__
, __LINE__
, _("invalid hex"));
2909 /* Assume that it is in decimal. */
2911 for (i
= 0; my_string
[i
] != '\0'; i
++)
2913 if (isdigit (my_string
[i
]))
2914 addr
= (my_string
[i
] - '0') + (addr
* 10);
2916 internal_error (__FILE__
, __LINE__
, _("invalid decimal"));
2923 gdb_realpath (const char *filename
)
2925 /* Method 1: The system has a compile time upper bound on a filename
2926 path. Use that and realpath() to canonicalize the name. This is
2927 the most common case. Note that, if there isn't a compile time
2928 upper bound, you want to avoid realpath() at all costs. */
2929 #if defined(HAVE_REALPATH)
2931 # if defined (PATH_MAX)
2933 # define USE_REALPATH
2934 # elif defined (MAXPATHLEN)
2935 char buf
[MAXPATHLEN
];
2936 # define USE_REALPATH
2938 # if defined (USE_REALPATH)
2939 const char *rp
= realpath (filename
, buf
);
2942 return xstrdup (rp
);
2945 #endif /* HAVE_REALPATH */
2947 /* Method 2: The host system (i.e., GNU) has the function
2948 canonicalize_file_name() which malloc's a chunk of memory and
2949 returns that, use that. */
2950 #if defined(HAVE_CANONICALIZE_FILE_NAME)
2952 char *rp
= canonicalize_file_name (filename
);
2954 return xstrdup (filename
);
2960 /* FIXME: cagney/2002-11-13:
2962 Method 2a: Use realpath() with a NULL buffer. Some systems, due
2963 to the problems described in in method 3, have modified their
2964 realpath() implementation so that it will allocate a buffer when
2965 NULL is passed in. Before this can be used, though, some sort of
2966 configure time test would need to be added. Otherwize the code
2967 will likely core dump. */
2969 /* Method 3: Now we're getting desperate! The system doesn't have a
2970 compile time buffer size and no alternative function. Query the
2971 OS, using pathconf(), for the buffer limit. Care is needed
2972 though, some systems do not limit PATH_MAX (return -1 for
2973 pathconf()) making it impossible to pass a correctly sized buffer
2974 to realpath() (it could always overflow). On those systems, we
2976 #if defined (HAVE_REALPATH) && defined (HAVE_UNISTD_H) && defined(HAVE_ALLOCA)
2978 /* Find out the max path size. */
2979 long path_max
= pathconf ("/", _PC_PATH_MAX
);
2982 /* PATH_MAX is bounded. */
2983 char *buf
= alloca (path_max
);
2984 char *rp
= realpath (filename
, buf
);
2985 return xstrdup (rp
? rp
: filename
);
2990 /* This system is a lost cause, just dup the buffer. */
2991 return xstrdup (filename
);
2994 /* Return a copy of FILENAME, with its directory prefix canonicalized
2998 xfullpath (const char *filename
)
3000 const char *base_name
= lbasename (filename
);
3005 /* Extract the basename of filename, and return immediately
3006 a copy of filename if it does not contain any directory prefix. */
3007 if (base_name
== filename
)
3008 return xstrdup (filename
);
3010 dir_name
= alloca ((size_t) (base_name
- filename
+ 2));
3011 /* Allocate enough space to store the dir_name + plus one extra
3012 character sometimes needed under Windows (see below), and
3013 then the closing \000 character */
3014 strncpy (dir_name
, filename
, base_name
- filename
);
3015 dir_name
[base_name
- filename
] = '\000';
3017 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
3018 /* We need to be careful when filename is of the form 'd:foo', which
3019 is equivalent of d:./foo, which is totally different from d:/foo. */
3020 if (strlen (dir_name
) == 2 && isalpha (dir_name
[0]) && dir_name
[1] == ':')
3023 dir_name
[3] = '\000';
3027 /* Canonicalize the directory prefix, and build the resulting
3028 filename. If the dirname realpath already contains an ending
3029 directory separator, avoid doubling it. */
3030 real_path
= gdb_realpath (dir_name
);
3031 if (IS_DIR_SEPARATOR (real_path
[strlen (real_path
) - 1]))
3032 result
= concat (real_path
, base_name
, (char *)NULL
);
3034 result
= concat (real_path
, SLASH_STRING
, base_name
, (char *)NULL
);
3041 /* This is the 32-bit CRC function used by the GNU separate debug
3042 facility. An executable may contain a section named
3043 .gnu_debuglink, which holds the name of a separate executable file
3044 containing its debug info, and a checksum of that file's contents,
3045 computed using this function. */
3047 gnu_debuglink_crc32 (unsigned long crc
, unsigned char *buf
, size_t len
)
3049 static const unsigned long crc32_table
[256] = {
3050 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419,
3051 0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4,
3052 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07,
3053 0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,
3054 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856,
3055 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
3056 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4,
3057 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
3058 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3,
3059 0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a,
3060 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599,
3061 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
3062 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190,
3063 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f,
3064 0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e,
3065 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
3066 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed,
3067 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
3068 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3,
3069 0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2,
3070 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a,
3071 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5,
3072 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010,
3073 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
3074 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17,
3075 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6,
3076 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615,
3077 0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,
3078 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344,
3079 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
3080 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a,
3081 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
3082 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1,
3083 0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c,
3084 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef,
3085 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
3086 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe,
3087 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31,
3088 0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c,
3089 0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
3090 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b,
3091 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
3092 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1,
3093 0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,
3094 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278,
3095 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7,
3096 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66,
3097 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
3098 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605,
3099 0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8,
3100 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b,
3105 crc
= ~crc
& 0xffffffff;
3106 for (end
= buf
+ len
; buf
< end
; ++buf
)
3107 crc
= crc32_table
[(crc
^ *buf
) & 0xff] ^ (crc
>> 8);
3108 return ~crc
& 0xffffffff;;
3112 align_up (ULONGEST v
, int n
)
3114 /* Check that N is really a power of two. */
3115 gdb_assert (n
&& (n
& (n
-1)) == 0);
3116 return (v
+ n
- 1) & -n
;
3120 align_down (ULONGEST v
, int n
)
3122 /* Check that N is really a power of two. */
3123 gdb_assert (n
&& (n
& (n
-1)) == 0);
3127 /* Allocation function for the libiberty hash table which uses an
3128 obstack. The obstack is passed as DATA. */
3131 hashtab_obstack_allocate (void *data
, size_t size
, size_t count
)
3133 unsigned int total
= size
* count
;
3134 void *ptr
= obstack_alloc ((struct obstack
*) data
, total
);
3135 memset (ptr
, 0, total
);
3139 /* Trivial deallocation function for the libiberty splay tree and hash
3140 table - don't deallocate anything. Rely on later deletion of the
3141 obstack. DATA will be the obstack, although it is not needed
3145 dummy_obstack_deallocate (void *object
, void *data
)