1 /* General utility routines for GDB, the GNU debugger.
3 Copyright (C) 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
4 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
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 3 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, see <http://www.gnu.org/licenses/>. */
23 #include "gdb_assert.h"
25 #include "gdb_string.h"
26 #include "event-top.h"
27 #include "exceptions.h"
30 #include "tui/tui.h" /* For tui_get_command_dimension. */
37 /* SunOS's curses.h has a '#define reg register' in it. Thank you Sun. */
48 #include "expression.h"
52 #include "filenames.h"
54 #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"
70 extern PTR
malloc (); /* OK: PTR */
72 #if !HAVE_DECL_REALLOC
73 extern PTR
realloc (); /* OK: PTR */
79 /* readline defines this. */
82 void (*deprecated_error_begin_hook
) (void);
84 /* Prototypes for local functions */
86 static void vfprintf_maybe_filtered (struct ui_file
*, const char *,
87 va_list, int) ATTR_FORMAT (printf
, 2, 0);
89 static void fputs_maybe_filtered (const char *, struct ui_file
*, int);
91 static void do_my_cleanups (struct cleanup
**, struct cleanup
*);
93 static void prompt_for_continue (void);
95 static void set_screen_size (void);
96 static void set_width (void);
98 /* A flag indicating whether to timestamp debugging messages. */
100 static int debug_timestamp
= 0;
102 /* Chain of cleanup actions established with make_cleanup,
103 to be executed if an error happens. */
105 static struct cleanup
*cleanup_chain
; /* cleaned up after a failed command */
106 static struct cleanup
*final_cleanup_chain
; /* cleaned up when gdb exits */
107 static struct cleanup
*exec_cleanup_chain
; /* cleaned up on each execution command */
109 /* Pointer to what is left to do for an execution command after the
110 target stops. Used only in asynchronous mode, by targets that
111 support async execution. The finish and until commands use it. So
112 does the target extended-remote command. */
113 struct continuation
*cmd_continuation
;
114 struct continuation
*intermediate_continuation
;
116 /* Nonzero if we have job control. */
120 /* Nonzero means a quit has been requested. */
124 /* Nonzero means quit immediately if Control-C is typed now, rather
125 than waiting until QUIT is executed. Be careful in setting this;
126 code which executes with immediate_quit set has to be very careful
127 about being able to deal with being interrupted at any time. It is
128 almost always better to use QUIT; the only exception I can think of
129 is being able to quit out of a system call (using EINTR loses if
130 the SIGINT happens between the previous QUIT and the system call).
131 To immediately quit in the case in which a SIGINT happens between
132 the previous QUIT and setting immediate_quit (desirable anytime we
133 expect to block), call QUIT after setting immediate_quit. */
137 /* Nonzero means that encoded C++/ObjC names should be printed out in their
138 C++/ObjC form rather than raw. */
142 show_demangle (struct ui_file
*file
, int from_tty
,
143 struct cmd_list_element
*c
, const char *value
)
145 fprintf_filtered (file
, _("\
146 Demangling of encoded C++/ObjC names when displaying symbols is %s.\n"),
150 /* Nonzero means that encoded C++/ObjC names should be printed out in their
151 C++/ObjC form even in assembler language displays. If this is set, but
152 DEMANGLE is zero, names are printed raw, i.e. DEMANGLE controls. */
154 int asm_demangle
= 0;
156 show_asm_demangle (struct ui_file
*file
, int from_tty
,
157 struct cmd_list_element
*c
, const char *value
)
159 fprintf_filtered (file
, _("\
160 Demangling of C++/ObjC names in disassembly listings is %s.\n"),
164 /* Nonzero means that strings with character values >0x7F should be printed
165 as octal escapes. Zero means just print the value (e.g. it's an
166 international character, and the terminal or window can cope.) */
168 int sevenbit_strings
= 0;
170 show_sevenbit_strings (struct ui_file
*file
, int from_tty
,
171 struct cmd_list_element
*c
, const char *value
)
173 fprintf_filtered (file
, _("\
174 Printing of 8-bit characters in strings as \\nnn is %s.\n"),
178 /* String to be printed before error messages, if any. */
180 char *error_pre_print
;
182 /* String to be printed before quit messages, if any. */
184 char *quit_pre_print
;
186 /* String to be printed before warning messages, if any. */
188 char *warning_pre_print
= "\nwarning: ";
190 int pagination_enabled
= 1;
192 show_pagination_enabled (struct ui_file
*file
, int from_tty
,
193 struct cmd_list_element
*c
, const char *value
)
195 fprintf_filtered (file
, _("State of pagination is %s.\n"), value
);
200 /* Add a new cleanup to the cleanup_chain,
201 and return the previous chain pointer
202 to be passed later to do_cleanups or discard_cleanups.
203 Args are FUNCTION to clean up with, and ARG to pass to it. */
206 make_cleanup (make_cleanup_ftype
*function
, void *arg
)
208 return make_my_cleanup (&cleanup_chain
, function
, arg
);
212 make_final_cleanup (make_cleanup_ftype
*function
, void *arg
)
214 return make_my_cleanup (&final_cleanup_chain
, function
, arg
);
218 make_exec_cleanup (make_cleanup_ftype
*function
, void *arg
)
220 return make_my_cleanup (&exec_cleanup_chain
, function
, arg
);
224 do_freeargv (void *arg
)
226 freeargv ((char **) arg
);
230 make_cleanup_freeargv (char **arg
)
232 return make_my_cleanup (&cleanup_chain
, do_freeargv
, arg
);
236 do_bfd_close_cleanup (void *arg
)
242 make_cleanup_bfd_close (bfd
*abfd
)
244 return make_cleanup (do_bfd_close_cleanup
, abfd
);
248 do_close_cleanup (void *arg
)
256 make_cleanup_close (int fd
)
258 int *saved_fd
= xmalloc (sizeof (fd
));
260 return make_cleanup (do_close_cleanup
, saved_fd
);
264 do_ui_file_delete (void *arg
)
266 ui_file_delete (arg
);
270 make_cleanup_ui_file_delete (struct ui_file
*arg
)
272 return make_my_cleanup (&cleanup_chain
, do_ui_file_delete
, arg
);
276 do_free_section_addr_info (void *arg
)
278 free_section_addr_info (arg
);
282 make_cleanup_free_section_addr_info (struct section_addr_info
*addrs
)
284 return make_my_cleanup (&cleanup_chain
, do_free_section_addr_info
, addrs
);
289 make_my_cleanup (struct cleanup
**pmy_chain
, make_cleanup_ftype
*function
,
293 = (struct cleanup
*) xmalloc (sizeof (struct cleanup
));
294 struct cleanup
*old_chain
= *pmy_chain
;
296 new->next
= *pmy_chain
;
297 new->function
= function
;
304 /* Discard cleanups and do the actions they describe
305 until we get back to the point OLD_CHAIN in the cleanup_chain. */
308 do_cleanups (struct cleanup
*old_chain
)
310 do_my_cleanups (&cleanup_chain
, old_chain
);
314 do_final_cleanups (struct cleanup
*old_chain
)
316 do_my_cleanups (&final_cleanup_chain
, old_chain
);
320 do_exec_cleanups (struct cleanup
*old_chain
)
322 do_my_cleanups (&exec_cleanup_chain
, old_chain
);
326 do_my_cleanups (struct cleanup
**pmy_chain
,
327 struct cleanup
*old_chain
)
330 while ((ptr
= *pmy_chain
) != old_chain
)
332 *pmy_chain
= ptr
->next
; /* Do this first incase recursion */
333 (*ptr
->function
) (ptr
->arg
);
338 /* Discard cleanups, not doing the actions they describe,
339 until we get back to the point OLD_CHAIN in the cleanup_chain. */
342 discard_cleanups (struct cleanup
*old_chain
)
344 discard_my_cleanups (&cleanup_chain
, old_chain
);
348 discard_final_cleanups (struct cleanup
*old_chain
)
350 discard_my_cleanups (&final_cleanup_chain
, old_chain
);
354 discard_my_cleanups (struct cleanup
**pmy_chain
,
355 struct cleanup
*old_chain
)
358 while ((ptr
= *pmy_chain
) != old_chain
)
360 *pmy_chain
= ptr
->next
;
365 /* Set the cleanup_chain to 0, and return the old cleanup chain. */
369 return save_my_cleanups (&cleanup_chain
);
373 save_final_cleanups (void)
375 return save_my_cleanups (&final_cleanup_chain
);
379 save_my_cleanups (struct cleanup
**pmy_chain
)
381 struct cleanup
*old_chain
= *pmy_chain
;
387 /* Restore the cleanup chain from a previously saved chain. */
389 restore_cleanups (struct cleanup
*chain
)
391 restore_my_cleanups (&cleanup_chain
, chain
);
395 restore_final_cleanups (struct cleanup
*chain
)
397 restore_my_cleanups (&final_cleanup_chain
, chain
);
401 restore_my_cleanups (struct cleanup
**pmy_chain
, struct cleanup
*chain
)
406 /* This function is useful for cleanups.
410 old_chain = make_cleanup (free_current_contents, &foo);
412 to arrange to free the object thus allocated. */
415 free_current_contents (void *ptr
)
417 void **location
= ptr
;
418 if (location
== NULL
)
419 internal_error (__FILE__
, __LINE__
,
420 _("free_current_contents: NULL pointer"));
421 if (*location
!= NULL
)
428 /* Provide a known function that does nothing, to use as a base for
429 for a possibly long chain of cleanups. This is useful where we
430 use the cleanup chain for handling normal cleanups as well as dealing
431 with cleanups that need to be done as a result of a call to error().
432 In such cases, we may not be certain where the first cleanup is, unless
433 we have a do-nothing one to always use as the base. */
436 null_cleanup (void *arg
)
440 /* Add a continuation to the continuation list, the global list
441 cmd_continuation. The new continuation will be added at the front.*/
443 add_continuation (void (*continuation_hook
) (struct continuation_arg
*),
444 struct continuation_arg
*arg_list
)
446 struct continuation
*continuation_ptr
;
449 (struct continuation
*) xmalloc (sizeof (struct continuation
));
450 continuation_ptr
->continuation_hook
= continuation_hook
;
451 continuation_ptr
->arg_list
= arg_list
;
452 continuation_ptr
->next
= cmd_continuation
;
453 cmd_continuation
= continuation_ptr
;
456 /* Walk down the cmd_continuation list, and execute all the
457 continuations. There is a problem though. In some cases new
458 continuations may be added while we are in the middle of this
459 loop. If this happens they will be added in the front, and done
460 before we have a chance of exhausting those that were already
461 there. We need to then save the beginning of the list in a pointer
462 and do the continuations from there on, instead of using the
463 global beginning of list as our iteration pointer. */
465 do_all_continuations (void)
467 struct continuation
*continuation_ptr
;
468 struct continuation
*saved_continuation
;
470 /* Copy the list header into another pointer, and set the global
471 list header to null, so that the global list can change as a side
472 effect of invoking the continuations and the processing of
473 the preexisting continuations will not be affected. */
474 continuation_ptr
= cmd_continuation
;
475 cmd_continuation
= NULL
;
477 /* Work now on the list we have set aside. */
478 while (continuation_ptr
)
480 (continuation_ptr
->continuation_hook
) (continuation_ptr
->arg_list
);
481 saved_continuation
= continuation_ptr
;
482 continuation_ptr
= continuation_ptr
->next
;
483 xfree (saved_continuation
);
487 /* Walk down the cmd_continuation list, and get rid of all the
490 discard_all_continuations (void)
492 struct continuation
*continuation_ptr
;
494 while (cmd_continuation
)
496 continuation_ptr
= cmd_continuation
;
497 cmd_continuation
= continuation_ptr
->next
;
498 xfree (continuation_ptr
);
502 /* Add a continuation to the continuation list, the global list
503 intermediate_continuation. The new continuation will be added at
506 add_intermediate_continuation (void (*continuation_hook
)
507 (struct continuation_arg
*),
508 struct continuation_arg
*arg_list
)
510 struct continuation
*continuation_ptr
;
513 (struct continuation
*) xmalloc (sizeof (struct continuation
));
514 continuation_ptr
->continuation_hook
= continuation_hook
;
515 continuation_ptr
->arg_list
= arg_list
;
516 continuation_ptr
->next
= intermediate_continuation
;
517 intermediate_continuation
= continuation_ptr
;
520 /* Walk down the cmd_continuation list, and execute all the
521 continuations. There is a problem though. In some cases new
522 continuations may be added while we are in the middle of this
523 loop. If this happens they will be added in the front, and done
524 before we have a chance of exhausting those that were already
525 there. We need to then save the beginning of the list in a pointer
526 and do the continuations from there on, instead of using the
527 global beginning of list as our iteration pointer.*/
529 do_all_intermediate_continuations (void)
531 struct continuation
*continuation_ptr
;
532 struct continuation
*saved_continuation
;
534 /* Copy the list header into another pointer, and set the global
535 list header to null, so that the global list can change as a side
536 effect of invoking the continuations and the processing of
537 the preexisting continuations will not be affected. */
538 continuation_ptr
= intermediate_continuation
;
539 intermediate_continuation
= NULL
;
541 /* Work now on the list we have set aside. */
542 while (continuation_ptr
)
544 (continuation_ptr
->continuation_hook
) (continuation_ptr
->arg_list
);
545 saved_continuation
= continuation_ptr
;
546 continuation_ptr
= continuation_ptr
->next
;
547 xfree (saved_continuation
);
551 /* Walk down the cmd_continuation list, and get rid of all the
554 discard_all_intermediate_continuations (void)
556 struct continuation
*continuation_ptr
;
558 while (intermediate_continuation
)
560 continuation_ptr
= intermediate_continuation
;
561 intermediate_continuation
= continuation_ptr
->next
;
562 xfree (continuation_ptr
);
568 /* Print a warning message. The first argument STRING is the warning
569 message, used as an fprintf format string, the second is the
570 va_list of arguments for that string. A warning is unfiltered (not
571 paginated) so that the user does not need to page through each
572 screen full of warnings when there are lots of them. */
575 vwarning (const char *string
, va_list args
)
577 if (deprecated_warning_hook
)
578 (*deprecated_warning_hook
) (string
, args
);
581 target_terminal_ours ();
582 wrap_here (""); /* Force out any buffered output */
583 gdb_flush (gdb_stdout
);
584 if (warning_pre_print
)
585 fputs_unfiltered (warning_pre_print
, gdb_stderr
);
586 vfprintf_unfiltered (gdb_stderr
, string
, args
);
587 fprintf_unfiltered (gdb_stderr
, "\n");
592 /* Print a warning message.
593 The first argument STRING is the warning message, used as a fprintf string,
594 and the remaining args are passed as arguments to it.
595 The primary difference between warnings and errors is that a warning
596 does not force the return to command level. */
599 warning (const char *string
, ...)
602 va_start (args
, string
);
603 vwarning (string
, args
);
607 /* Print an error message and return to command level.
608 The first argument STRING is the error message, used as a fprintf string,
609 and the remaining args are passed as arguments to it. */
612 verror (const char *string
, va_list args
)
614 throw_verror (GENERIC_ERROR
, string
, args
);
618 error (const char *string
, ...)
621 va_start (args
, string
);
622 throw_verror (GENERIC_ERROR
, string
, args
);
626 /* Print an error message and quit.
627 The first argument STRING is the error message, used as a fprintf string,
628 and the remaining args are passed as arguments to it. */
631 vfatal (const char *string
, va_list args
)
633 throw_vfatal (string
, args
);
637 fatal (const char *string
, ...)
640 va_start (args
, string
);
641 throw_vfatal (string
, args
);
646 error_stream (struct ui_file
*stream
)
649 char *message
= ui_file_xstrdup (stream
, &len
);
650 make_cleanup (xfree
, message
);
651 error (("%s"), message
);
654 /* Print a message reporting an internal error/warning. Ask the user
655 if they want to continue, dump core, or just exit. Return
656 something to indicate a quit. */
658 struct internal_problem
661 /* FIXME: cagney/2002-08-15: There should be ``maint set/show''
662 commands available for controlling these variables. */
663 enum auto_boolean should_quit
;
664 enum auto_boolean should_dump_core
;
667 /* Report a problem, internal to GDB, to the user. Once the problem
668 has been reported, and assuming GDB didn't quit, the caller can
669 either allow execution to resume or throw an error. */
671 static void ATTR_FORMAT (printf
, 4, 0)
672 internal_vproblem (struct internal_problem
*problem
,
673 const char *file
, int line
, const char *fmt
, va_list ap
)
680 /* Don't allow infinite error/warning recursion. */
682 static char msg
[] = "Recursive internal problem.\n";
690 fputs_unfiltered (msg
, gdb_stderr
);
691 abort (); /* NOTE: GDB has only three calls to abort(). */
694 write (STDERR_FILENO
, msg
, sizeof (msg
));
699 /* Try to get the message out and at the start of a new line. */
700 target_terminal_ours ();
703 /* Create a string containing the full error/warning message. Need
704 to call query with this full string, as otherwize the reason
705 (error/warning) and question become separated. Format using a
706 style similar to a compiler error message. Include extra detail
707 so that the user knows that they are living on the edge. */
710 msg
= xstrvprintf (fmt
, ap
);
711 reason
= xstrprintf ("\
713 A problem internal to GDB has been detected,\n\
714 further debugging may prove unreliable.", file
, line
, problem
->name
, msg
);
716 make_cleanup (xfree
, reason
);
719 switch (problem
->should_quit
)
721 case AUTO_BOOLEAN_AUTO
:
722 /* Default (yes/batch case) is to quit GDB. When in batch mode
723 this lessens the likelhood of GDB going into an infinate
725 quit_p
= query (_("%s\nQuit this debugging session? "), reason
);
727 case AUTO_BOOLEAN_TRUE
:
730 case AUTO_BOOLEAN_FALSE
:
734 internal_error (__FILE__
, __LINE__
, _("bad switch"));
737 switch (problem
->should_dump_core
)
739 case AUTO_BOOLEAN_AUTO
:
740 /* Default (yes/batch case) is to dump core. This leaves a GDB
741 `dropping' so that it is easier to see that something went
743 dump_core_p
= query (_("%s\nCreate a core file of GDB? "), reason
);
746 case AUTO_BOOLEAN_TRUE
:
749 case AUTO_BOOLEAN_FALSE
:
753 internal_error (__FILE__
, __LINE__
, _("bad switch"));
759 abort (); /* NOTE: GDB has only three calls to abort(). */
767 #ifdef HAVE_WORKING_FORK
769 abort (); /* NOTE: GDB has only three calls to abort(). */
777 static struct internal_problem internal_error_problem
= {
778 "internal-error", AUTO_BOOLEAN_AUTO
, AUTO_BOOLEAN_AUTO
782 internal_verror (const char *file
, int line
, const char *fmt
, va_list ap
)
784 internal_vproblem (&internal_error_problem
, file
, line
, fmt
, ap
);
785 deprecated_throw_reason (RETURN_ERROR
);
789 internal_error (const char *file
, int line
, const char *string
, ...)
792 va_start (ap
, string
);
793 internal_verror (file
, line
, string
, ap
);
797 static struct internal_problem internal_warning_problem
= {
798 "internal-warning", AUTO_BOOLEAN_AUTO
, AUTO_BOOLEAN_AUTO
802 internal_vwarning (const char *file
, int line
, const char *fmt
, va_list ap
)
804 internal_vproblem (&internal_warning_problem
, file
, line
, fmt
, ap
);
808 internal_warning (const char *file
, int line
, const char *string
, ...)
811 va_start (ap
, string
);
812 internal_vwarning (file
, line
, string
, ap
);
816 /* Print the system error message for errno, and also mention STRING
817 as the file name for which the error was encountered.
818 Then return to command level. */
821 perror_with_name (const char *string
)
826 err
= safe_strerror (errno
);
827 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
828 strcpy (combined
, string
);
829 strcat (combined
, ": ");
830 strcat (combined
, err
);
832 /* I understand setting these is a matter of taste. Still, some people
833 may clear errno but not know about bfd_error. Doing this here is not
835 bfd_set_error (bfd_error_no_error
);
838 error (_("%s."), combined
);
841 /* Print the system error message for ERRCODE, and also mention STRING
842 as the file name for which the error was encountered. */
845 print_sys_errmsg (const char *string
, int errcode
)
850 err
= safe_strerror (errcode
);
851 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
852 strcpy (combined
, string
);
853 strcat (combined
, ": ");
854 strcat (combined
, err
);
856 /* We want anything which was printed on stdout to come out first, before
858 gdb_flush (gdb_stdout
);
859 fprintf_unfiltered (gdb_stderr
, "%s.\n", combined
);
862 /* Control C eventually causes this to be called, at a convenient time. */
868 /* No steenking SIGINT will ever be coming our way when the
869 program is resumed. Don't lie. */
873 /* If there is no terminal switching for this target, then we can't
874 possibly get screwed by the lack of job control. */
875 || current_target
.to_terminal_ours
== NULL
)
878 fatal ("Quit (expect signal SIGINT when the program is resumed)");
883 /* Called when a memory allocation fails, with the number of bytes of
884 memory requested in SIZE. */
891 internal_error (__FILE__
, __LINE__
,
892 _("virtual memory exhausted: can't allocate %ld bytes."),
897 internal_error (__FILE__
, __LINE__
, _("virtual memory exhausted."));
901 /* The xmalloc() (libiberty.h) family of memory management routines.
903 These are like the ISO-C malloc() family except that they implement
904 consistent semantics and guard against typical memory management
907 /* NOTE: These are declared using PTR to ensure consistency with
908 "libiberty.h". xfree() is GDB local. */
911 xmalloc (size_t size
)
915 /* See libiberty/xmalloc.c. This function need's to match that's
916 semantics. It never returns NULL. */
920 val
= malloc (size
); /* OK: malloc */
928 xzalloc (size_t size
)
930 return xcalloc (1, size
);
934 xrealloc (PTR ptr
, size_t size
) /* OK: PTR */
938 /* See libiberty/xmalloc.c. This function need's to match that's
939 semantics. It never returns NULL. */
944 val
= realloc (ptr
, size
); /* OK: realloc */
946 val
= malloc (size
); /* OK: malloc */
954 xcalloc (size_t number
, size_t size
)
958 /* See libiberty/xmalloc.c. This function need's to match that's
959 semantics. It never returns NULL. */
960 if (number
== 0 || size
== 0)
966 mem
= calloc (number
, size
); /* OK: xcalloc */
968 nomem (number
* size
);
977 free (ptr
); /* OK: free */
981 /* Like asprintf/vasprintf but get an internal_error if the call
985 xstrprintf (const char *format
, ...)
989 va_start (args
, format
);
990 ret
= xstrvprintf (format
, args
);
996 xasprintf (char **ret
, const char *format
, ...)
999 va_start (args
, format
);
1000 (*ret
) = xstrvprintf (format
, args
);
1005 xvasprintf (char **ret
, const char *format
, va_list ap
)
1007 (*ret
) = xstrvprintf (format
, ap
);
1011 xstrvprintf (const char *format
, va_list ap
)
1014 int status
= vasprintf (&ret
, format
, ap
);
1015 /* NULL is returned when there was a memory allocation problem, or
1016 any other error (for instance, a bad format string). A negative
1017 status (the printed length) with a non-NULL buffer should never
1018 happen, but just to be sure. */
1019 if (ret
== NULL
|| status
< 0)
1020 internal_error (__FILE__
, __LINE__
, _("vasprintf call failed"));
1025 xsnprintf (char *str
, size_t size
, const char *format
, ...)
1030 va_start (args
, format
);
1031 ret
= vsnprintf (str
, size
, format
, args
);
1032 gdb_assert (ret
< size
);
1038 /* My replacement for the read system call.
1039 Used like `read' but keeps going if `read' returns too soon. */
1042 myread (int desc
, char *addr
, int len
)
1049 val
= read (desc
, addr
, len
);
1053 return orglen
- len
;
1060 /* Make a copy of the string at PTR with SIZE characters
1061 (and add a null character at the end in the copy).
1062 Uses malloc to get the space. Returns the address of the copy. */
1065 savestring (const char *ptr
, size_t size
)
1067 char *p
= (char *) xmalloc (size
+ 1);
1068 memcpy (p
, ptr
, size
);
1074 print_spaces (int n
, struct ui_file
*file
)
1076 fputs_unfiltered (n_spaces (n
), file
);
1079 /* Print a host address. */
1082 gdb_print_host_address (const void *addr
, struct ui_file
*stream
)
1085 /* We could use the %p conversion specifier to fprintf if we had any
1086 way of knowing whether this host supports it. But the following
1087 should work on the Alpha and on 32 bit machines. */
1089 fprintf_filtered (stream
, "0x%lx", (unsigned long) addr
);
1093 /* This function supports the query, nquery, and yquery functions.
1094 Ask user a y-or-n question and return 0 if answer is no, 1 if
1095 answer is yes, or default the answer to the specified default
1096 (for yquery or nquery). DEFCHAR may be 'y' or 'n' to provide a
1097 default answer, or '\0' for no default.
1098 CTLSTR is the control string and should end in "? ". It should
1099 not say how to answer, because we do that.
1100 ARGS are the arguments passed along with the CTLSTR argument to
1103 static int ATTR_FORMAT (printf
, 1, 0)
1104 defaulted_query (const char *ctlstr
, const char defchar
, va_list args
)
1110 char def_answer
, not_def_answer
;
1111 char *y_string
, *n_string
, *question
;
1113 /* Set up according to which answer is the default. */
1114 if (defchar
== '\0')
1118 not_def_answer
= 'N';
1122 else if (defchar
== 'y')
1126 not_def_answer
= 'N';
1134 not_def_answer
= 'Y';
1139 /* Automatically answer the default value if the user did not want
1144 /* If input isn't coming from the user directly, just say what
1145 question we're asking, and then answer "yes" automatically. This
1146 way, important error messages don't get lost when talking to GDB
1148 if (! input_from_terminal_p ())
1151 vfprintf_filtered (gdb_stdout
, ctlstr
, args
);
1153 printf_filtered (_("(%s or %s) [answered %c; input not from terminal]\n"),
1154 y_string
, n_string
, def_answer
);
1155 gdb_flush (gdb_stdout
);
1160 /* Automatically answer the default value if input is not from the user
1161 directly, or if the user did not want prompts. */
1162 if (!input_from_terminal_p () || !caution
)
1165 if (deprecated_query_hook
)
1167 return deprecated_query_hook (ctlstr
, args
);
1170 /* Format the question outside of the loop, to avoid reusing args. */
1171 question
= xstrvprintf (ctlstr
, args
);
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 fputs_filtered (question
, gdb_stdout
);
1182 printf_filtered (_("(%s or %s) "), y_string
, n_string
);
1184 if (annotation_level
> 1)
1185 printf_filtered (("\n\032\032query\n"));
1188 gdb_flush (gdb_stdout
);
1190 answer
= fgetc (stdin
);
1191 clearerr (stdin
); /* in case of C-d */
1192 if (answer
== EOF
) /* C-d */
1194 printf_filtered ("EOF [assumed %c]\n", def_answer
);
1198 /* Eat rest of input line, to EOF or newline */
1202 ans2
= fgetc (stdin
);
1205 while (ans2
!= EOF
&& ans2
!= '\n' && ans2
!= '\r');
1209 /* Check answer. For the non-default, the user must specify
1210 the non-default explicitly. */
1211 if (answer
== not_def_answer
)
1213 retval
= !def_value
;
1216 /* Otherwise, if a default was specified, the user may either
1217 specify the required input or have it default by entering
1219 if (answer
== def_answer
1220 || (defchar
!= '\0' &&
1221 (answer
== '\n' || answer
== '\r' || answer
== EOF
)))
1226 /* Invalid entries are not defaulted and require another selection. */
1227 printf_filtered (_("Please answer %s or %s.\n"),
1228 y_string
, n_string
);
1232 if (annotation_level
> 1)
1233 printf_filtered (("\n\032\032post-query\n"));
1238 /* Ask user a y-or-n question and return 0 if answer is no, 1 if
1239 answer is yes, or 0 if answer is defaulted.
1240 Takes three args which are given to printf to print the question.
1241 The first, a control string, should end in "? ".
1242 It should not say how to answer, because we do that. */
1245 nquery (const char *ctlstr
, ...)
1249 va_start (args
, ctlstr
);
1250 return defaulted_query (ctlstr
, 'n', args
);
1254 /* Ask user a y-or-n question and return 0 if answer is no, 1 if
1255 answer is yes, or 1 if answer is defaulted.
1256 Takes three args which are given to printf to print the question.
1257 The first, a control string, should end in "? ".
1258 It should not say how to answer, because we do that. */
1261 yquery (const char *ctlstr
, ...)
1265 va_start (args
, ctlstr
);
1266 return defaulted_query (ctlstr
, 'y', args
);
1270 /* Ask user a y-or-n question and return 1 iff answer is yes.
1271 Takes three args which are given to printf to print the question.
1272 The first, a control string, should end in "? ".
1273 It should not say how to answer, because we do that. */
1276 query (const char *ctlstr
, ...)
1280 va_start (args
, ctlstr
);
1281 return defaulted_query (ctlstr
, '\0', args
);
1285 /* Print an error message saying that we couldn't make sense of a
1286 \^mumble sequence in a string or character constant. START and END
1287 indicate a substring of some larger string that contains the
1288 erroneous backslash sequence, missing the initial backslash. */
1290 no_control_char_error (const char *start
, const char *end
)
1292 int len
= end
- start
;
1293 char *copy
= alloca (end
- start
+ 1);
1295 memcpy (copy
, start
, len
);
1298 error (_("There is no control character `\\%s' in the `%s' character set."),
1299 copy
, target_charset ());
1302 /* Parse a C escape sequence. STRING_PTR points to a variable
1303 containing a pointer to the string to parse. That pointer
1304 should point to the character after the \. That pointer
1305 is updated past the characters we use. The value of the
1306 escape sequence is returned.
1308 A negative value means the sequence \ newline was seen,
1309 which is supposed to be equivalent to nothing at all.
1311 If \ is followed by a null character, we return a negative
1312 value and leave the string pointer pointing at the null character.
1314 If \ is followed by 000, we return 0 and leave the string pointer
1315 after the zeros. A value of 0 does not mean end of string. */
1318 parse_escape (char **string_ptr
)
1321 int c
= *(*string_ptr
)++;
1322 if (c_parse_backslash (c
, &target_char
))
1334 /* Remember where this escape sequence started, for reporting
1336 char *sequence_start_pos
= *string_ptr
- 1;
1338 c
= *(*string_ptr
)++;
1342 /* XXXCHARSET: What is `delete' in the host character set? */
1345 if (!host_char_to_target (c
, &target_char
))
1346 error (_("There is no character corresponding to `Delete' "
1347 "in the target character set `%s'."), host_charset ());
1352 target_char
= parse_escape (string_ptr
);
1355 if (!host_char_to_target (c
, &target_char
))
1356 no_control_char_error (sequence_start_pos
, *string_ptr
);
1359 /* Now target_char is something like `c', and we want to find
1360 its control-character equivalent. */
1361 if (!target_char_to_control_char (target_char
, &target_char
))
1362 no_control_char_error (sequence_start_pos
, *string_ptr
);
1367 /* XXXCHARSET: we need to use isdigit and value-of-digit
1368 methods of the host character set here. */
1384 if (c
>= '0' && c
<= '7')
1398 if (!host_char_to_target (c
, &target_char
))
1400 ("The escape sequence `\%c' is equivalent to plain `%c', which"
1401 " has no equivalent\n" "in the `%s' character set.", c
, c
,
1407 /* Print the character C on STREAM as part of the contents of a literal
1408 string whose delimiter is QUOTER. Note that this routine should only
1409 be call for printing things which are independent of the language
1410 of the program being debugged. */
1413 printchar (int c
, void (*do_fputs
) (const char *, struct ui_file
*),
1414 void (*do_fprintf
) (struct ui_file
*, const char *, ...)
1415 ATTRIBUTE_FPTR_PRINTF_2
, struct ui_file
*stream
, int quoter
)
1418 c
&= 0xFF; /* Avoid sign bit follies */
1420 if (c
< 0x20 || /* Low control chars */
1421 (c
>= 0x7F && c
< 0xA0) || /* DEL, High controls */
1422 (sevenbit_strings
&& c
>= 0x80))
1423 { /* high order bit set */
1427 do_fputs ("\\n", stream
);
1430 do_fputs ("\\b", stream
);
1433 do_fputs ("\\t", stream
);
1436 do_fputs ("\\f", stream
);
1439 do_fputs ("\\r", stream
);
1442 do_fputs ("\\e", stream
);
1445 do_fputs ("\\a", stream
);
1448 do_fprintf (stream
, "\\%.3o", (unsigned int) c
);
1454 if (c
== '\\' || c
== quoter
)
1455 do_fputs ("\\", stream
);
1456 do_fprintf (stream
, "%c", c
);
1460 /* Print the character C on STREAM as part of the contents of a
1461 literal string whose delimiter is QUOTER. Note that these routines
1462 should only be call for printing things which are independent of
1463 the language of the program being debugged. */
1466 fputstr_filtered (const char *str
, int quoter
, struct ui_file
*stream
)
1469 printchar (*str
++, fputs_filtered
, fprintf_filtered
, stream
, quoter
);
1473 fputstr_unfiltered (const char *str
, int quoter
, struct ui_file
*stream
)
1476 printchar (*str
++, fputs_unfiltered
, fprintf_unfiltered
, stream
, quoter
);
1480 fputstrn_filtered (const char *str
, int n
, int quoter
,
1481 struct ui_file
*stream
)
1484 for (i
= 0; i
< n
; i
++)
1485 printchar (str
[i
], fputs_filtered
, fprintf_filtered
, stream
, quoter
);
1489 fputstrn_unfiltered (const char *str
, int n
, int quoter
,
1490 struct ui_file
*stream
)
1493 for (i
= 0; i
< n
; i
++)
1494 printchar (str
[i
], fputs_unfiltered
, fprintf_unfiltered
, stream
, quoter
);
1498 /* Number of lines per page or UINT_MAX if paging is disabled. */
1499 static unsigned int lines_per_page
;
1501 show_lines_per_page (struct ui_file
*file
, int from_tty
,
1502 struct cmd_list_element
*c
, const char *value
)
1504 fprintf_filtered (file
, _("\
1505 Number of lines gdb thinks are in a page is %s.\n"),
1509 /* Number of chars per line or UINT_MAX if line folding is disabled. */
1510 static unsigned int chars_per_line
;
1512 show_chars_per_line (struct ui_file
*file
, int from_tty
,
1513 struct cmd_list_element
*c
, const char *value
)
1515 fprintf_filtered (file
, _("\
1516 Number of characters gdb thinks are in a line is %s.\n"),
1520 /* Current count of lines printed on this page, chars on this line. */
1521 static unsigned int lines_printed
, chars_printed
;
1523 /* Buffer and start column of buffered text, for doing smarter word-
1524 wrapping. When someone calls wrap_here(), we start buffering output
1525 that comes through fputs_filtered(). If we see a newline, we just
1526 spit it out and forget about the wrap_here(). If we see another
1527 wrap_here(), we spit it out and remember the newer one. If we see
1528 the end of the line, we spit out a newline, the indent, and then
1529 the buffered output. */
1531 /* Malloc'd buffer with chars_per_line+2 bytes. Contains characters which
1532 are waiting to be output (they have already been counted in chars_printed).
1533 When wrap_buffer[0] is null, the buffer is empty. */
1534 static char *wrap_buffer
;
1536 /* Pointer in wrap_buffer to the next character to fill. */
1537 static char *wrap_pointer
;
1539 /* String to indent by if the wrap occurs. Must not be NULL if wrap_column
1541 static char *wrap_indent
;
1543 /* Column number on the screen where wrap_buffer begins, or 0 if wrapping
1544 is not in effect. */
1545 static int wrap_column
;
1548 /* Inialize the number of lines per page and chars per line. */
1551 init_page_info (void)
1554 if (!tui_get_command_dimension (&chars_per_line
, &lines_per_page
))
1559 #if defined(__GO32__)
1560 rows
= ScreenRows ();
1561 cols
= ScreenCols ();
1562 lines_per_page
= rows
;
1563 chars_per_line
= cols
;
1565 /* Make sure Readline has initialized its terminal settings. */
1566 rl_reset_terminal (NULL
);
1568 /* Get the screen size from Readline. */
1569 rl_get_screen_size (&rows
, &cols
);
1570 lines_per_page
= rows
;
1571 chars_per_line
= cols
;
1573 /* Readline should have fetched the termcap entry for us. */
1574 if (tgetnum ("li") < 0 || getenv ("EMACS"))
1576 /* The number of lines per page is not mentioned in the
1577 terminal description. This probably means that paging is
1578 not useful (e.g. emacs shell window), so disable paging. */
1579 lines_per_page
= UINT_MAX
;
1582 /* FIXME: Get rid of this junk. */
1583 #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER)
1584 SIGWINCH_HANDLER (SIGWINCH
);
1587 /* If the output is not a terminal, don't paginate it. */
1588 if (!ui_file_isatty (gdb_stdout
))
1589 lines_per_page
= UINT_MAX
;
1597 /* Set the screen size based on LINES_PER_PAGE and CHARS_PER_LINE. */
1600 set_screen_size (void)
1602 int rows
= lines_per_page
;
1603 int cols
= chars_per_line
;
1611 /* Update Readline's idea of the terminal size. */
1612 rl_set_screen_size (rows
, cols
);
1615 /* Reinitialize WRAP_BUFFER according to the current value of
1621 if (chars_per_line
== 0)
1626 wrap_buffer
= (char *) xmalloc (chars_per_line
+ 2);
1627 wrap_buffer
[0] = '\0';
1630 wrap_buffer
= (char *) xrealloc (wrap_buffer
, chars_per_line
+ 2);
1631 wrap_pointer
= wrap_buffer
; /* Start it at the beginning. */
1635 set_width_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
1642 set_height_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
1647 /* Wait, so the user can read what's on the screen. Prompt the user
1648 to continue by pressing RETURN. */
1651 prompt_for_continue (void)
1654 char cont_prompt
[120];
1656 if (annotation_level
> 1)
1657 printf_unfiltered (("\n\032\032pre-prompt-for-continue\n"));
1659 strcpy (cont_prompt
,
1660 "---Type <return> to continue, or q <return> to quit---");
1661 if (annotation_level
> 1)
1662 strcat (cont_prompt
, "\n\032\032prompt-for-continue\n");
1664 /* We must do this *before* we call gdb_readline, else it will eventually
1665 call us -- thinking that we're trying to print beyond the end of the
1667 reinitialize_more_filter ();
1670 /* On a real operating system, the user can quit with SIGINT.
1673 'q' is provided on all systems so users don't have to change habits
1674 from system to system, and because telling them what to do in
1675 the prompt is more user-friendly than expecting them to think of
1677 /* Call readline, not gdb_readline, because GO32 readline handles control-C
1678 whereas control-C to gdb_readline will cause the user to get dumped
1680 ignore
= gdb_readline_wrapper (cont_prompt
);
1682 if (annotation_level
> 1)
1683 printf_unfiltered (("\n\032\032post-prompt-for-continue\n"));
1688 while (*p
== ' ' || *p
== '\t')
1691 async_request_quit (0);
1696 /* Now we have to do this again, so that GDB will know that it doesn't
1697 need to save the ---Type <return>--- line at the top of the screen. */
1698 reinitialize_more_filter ();
1700 dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */
1703 /* Reinitialize filter; ie. tell it to reset to original values. */
1706 reinitialize_more_filter (void)
1712 /* Indicate that if the next sequence of characters overflows the line,
1713 a newline should be inserted here rather than when it hits the end.
1714 If INDENT is non-null, it is a string to be printed to indent the
1715 wrapped part on the next line. INDENT must remain accessible until
1716 the next call to wrap_here() or until a newline is printed through
1719 If the line is already overfull, we immediately print a newline and
1720 the indentation, and disable further wrapping.
1722 If we don't know the width of lines, but we know the page height,
1723 we must not wrap words, but should still keep track of newlines
1724 that were explicitly printed.
1726 INDENT should not contain tabs, as that will mess up the char count
1727 on the next line. FIXME.
1729 This routine is guaranteed to force out any output which has been
1730 squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be
1731 used to force out output from the wrap_buffer. */
1734 wrap_here (char *indent
)
1736 /* This should have been allocated, but be paranoid anyway. */
1738 internal_error (__FILE__
, __LINE__
, _("failed internal consistency check"));
1742 *wrap_pointer
= '\0';
1743 fputs_unfiltered (wrap_buffer
, gdb_stdout
);
1745 wrap_pointer
= wrap_buffer
;
1746 wrap_buffer
[0] = '\0';
1747 if (chars_per_line
== UINT_MAX
) /* No line overflow checking */
1751 else if (chars_printed
>= chars_per_line
)
1753 puts_filtered ("\n");
1755 puts_filtered (indent
);
1760 wrap_column
= chars_printed
;
1764 wrap_indent
= indent
;
1768 /* Print input string to gdb_stdout, filtered, with wrap,
1769 arranging strings in columns of n chars. String can be
1770 right or left justified in the column. Never prints
1771 trailing spaces. String should never be longer than
1772 width. FIXME: this could be useful for the EXAMINE
1773 command, which currently doesn't tabulate very well */
1776 puts_filtered_tabular (char *string
, int width
, int right
)
1782 gdb_assert (chars_per_line
> 0);
1783 if (chars_per_line
== UINT_MAX
)
1785 fputs_filtered (string
, gdb_stdout
);
1786 fputs_filtered ("\n", gdb_stdout
);
1790 if (((chars_printed
- 1) / width
+ 2) * width
>= chars_per_line
)
1791 fputs_filtered ("\n", gdb_stdout
);
1793 if (width
>= chars_per_line
)
1794 width
= chars_per_line
- 1;
1796 stringlen
= strlen (string
);
1798 if (chars_printed
> 0)
1799 spaces
= width
- (chars_printed
- 1) % width
- 1;
1801 spaces
+= width
- stringlen
;
1803 spacebuf
= alloca (spaces
+ 1);
1804 spacebuf
[spaces
] = '\0';
1806 spacebuf
[spaces
] = ' ';
1808 fputs_filtered (spacebuf
, gdb_stdout
);
1809 fputs_filtered (string
, gdb_stdout
);
1813 /* Ensure that whatever gets printed next, using the filtered output
1814 commands, starts at the beginning of the line. I.E. if there is
1815 any pending output for the current line, flush it and start a new
1816 line. Otherwise do nothing. */
1821 if (chars_printed
> 0)
1823 puts_filtered ("\n");
1828 /* Like fputs but if FILTER is true, pause after every screenful.
1830 Regardless of FILTER can wrap at points other than the final
1831 character of a line.
1833 Unlike fputs, fputs_maybe_filtered does not return a value.
1834 It is OK for LINEBUFFER to be NULL, in which case just don't print
1837 Note that a longjmp to top level may occur in this routine (only if
1838 FILTER is true) (since prompt_for_continue may do so) so this
1839 routine should not be called when cleanups are not in place. */
1842 fputs_maybe_filtered (const char *linebuffer
, struct ui_file
*stream
,
1845 const char *lineptr
;
1847 if (linebuffer
== 0)
1850 /* Don't do any filtering if it is disabled. */
1851 if ((stream
!= gdb_stdout
) || !pagination_enabled
1852 || (lines_per_page
== UINT_MAX
&& chars_per_line
== UINT_MAX
))
1854 fputs_unfiltered (linebuffer
, stream
);
1858 /* Go through and output each character. Show line extension
1859 when this is necessary; prompt user for new page when this is
1862 lineptr
= linebuffer
;
1865 /* Possible new page. */
1866 if (filter
&& (lines_printed
>= lines_per_page
- 1))
1867 prompt_for_continue ();
1869 while (*lineptr
&& *lineptr
!= '\n')
1871 /* Print a single line. */
1872 if (*lineptr
== '\t')
1875 *wrap_pointer
++ = '\t';
1877 fputc_unfiltered ('\t', stream
);
1878 /* Shifting right by 3 produces the number of tab stops
1879 we have already passed, and then adding one and
1880 shifting left 3 advances to the next tab stop. */
1881 chars_printed
= ((chars_printed
>> 3) + 1) << 3;
1887 *wrap_pointer
++ = *lineptr
;
1889 fputc_unfiltered (*lineptr
, stream
);
1894 if (chars_printed
>= chars_per_line
)
1896 unsigned int save_chars
= chars_printed
;
1900 /* If we aren't actually wrapping, don't output newline --
1901 if chars_per_line is right, we probably just overflowed
1902 anyway; if it's wrong, let us keep going. */
1904 fputc_unfiltered ('\n', stream
);
1906 /* Possible new page. */
1907 if (lines_printed
>= lines_per_page
- 1)
1908 prompt_for_continue ();
1910 /* Now output indentation and wrapped string */
1913 fputs_unfiltered (wrap_indent
, stream
);
1914 *wrap_pointer
= '\0'; /* Null-terminate saved stuff */
1915 fputs_unfiltered (wrap_buffer
, stream
); /* and eject it */
1916 /* FIXME, this strlen is what prevents wrap_indent from
1917 containing tabs. However, if we recurse to print it
1918 and count its chars, we risk trouble if wrap_indent is
1919 longer than (the user settable) chars_per_line.
1920 Note also that this can set chars_printed > chars_per_line
1921 if we are printing a long string. */
1922 chars_printed
= strlen (wrap_indent
)
1923 + (save_chars
- wrap_column
);
1924 wrap_pointer
= wrap_buffer
; /* Reset buffer */
1925 wrap_buffer
[0] = '\0';
1926 wrap_column
= 0; /* And disable fancy wrap */
1931 if (*lineptr
== '\n')
1934 wrap_here ((char *) 0); /* Spit out chars, cancel further wraps */
1936 fputc_unfiltered ('\n', stream
);
1943 fputs_filtered (const char *linebuffer
, struct ui_file
*stream
)
1945 fputs_maybe_filtered (linebuffer
, stream
, 1);
1949 putchar_unfiltered (int c
)
1952 ui_file_write (gdb_stdout
, &buf
, 1);
1956 /* Write character C to gdb_stdout using GDB's paging mechanism and return C.
1957 May return nonlocally. */
1960 putchar_filtered (int c
)
1962 return fputc_filtered (c
, gdb_stdout
);
1966 fputc_unfiltered (int c
, struct ui_file
*stream
)
1969 ui_file_write (stream
, &buf
, 1);
1974 fputc_filtered (int c
, struct ui_file
*stream
)
1980 fputs_filtered (buf
, stream
);
1984 /* puts_debug is like fputs_unfiltered, except it prints special
1985 characters in printable fashion. */
1988 puts_debug (char *prefix
, char *string
, char *suffix
)
1992 /* Print prefix and suffix after each line. */
1993 static int new_line
= 1;
1994 static int return_p
= 0;
1995 static char *prev_prefix
= "";
1996 static char *prev_suffix
= "";
1998 if (*string
== '\n')
2001 /* If the prefix is changing, print the previous suffix, a new line,
2002 and the new prefix. */
2003 if ((return_p
|| (strcmp (prev_prefix
, prefix
) != 0)) && !new_line
)
2005 fputs_unfiltered (prev_suffix
, gdb_stdlog
);
2006 fputs_unfiltered ("\n", gdb_stdlog
);
2007 fputs_unfiltered (prefix
, gdb_stdlog
);
2010 /* Print prefix if we printed a newline during the previous call. */
2014 fputs_unfiltered (prefix
, gdb_stdlog
);
2017 prev_prefix
= prefix
;
2018 prev_suffix
= suffix
;
2020 /* Output characters in a printable format. */
2021 while ((ch
= *string
++) != '\0')
2027 fputc_unfiltered (ch
, gdb_stdlog
);
2030 fprintf_unfiltered (gdb_stdlog
, "\\x%02x", ch
& 0xff);
2034 fputs_unfiltered ("\\\\", gdb_stdlog
);
2037 fputs_unfiltered ("\\b", gdb_stdlog
);
2040 fputs_unfiltered ("\\f", gdb_stdlog
);
2044 fputs_unfiltered ("\\n", gdb_stdlog
);
2047 fputs_unfiltered ("\\r", gdb_stdlog
);
2050 fputs_unfiltered ("\\t", gdb_stdlog
);
2053 fputs_unfiltered ("\\v", gdb_stdlog
);
2057 return_p
= ch
== '\r';
2060 /* Print suffix if we printed a newline. */
2063 fputs_unfiltered (suffix
, gdb_stdlog
);
2064 fputs_unfiltered ("\n", gdb_stdlog
);
2069 /* Print a variable number of ARGS using format FORMAT. If this
2070 information is going to put the amount written (since the last call
2071 to REINITIALIZE_MORE_FILTER or the last page break) over the page size,
2072 call prompt_for_continue to get the users permision to continue.
2074 Unlike fprintf, this function does not return a value.
2076 We implement three variants, vfprintf (takes a vararg list and stream),
2077 fprintf (takes a stream to write on), and printf (the usual).
2079 Note also that a longjmp to top level may occur in this routine
2080 (since prompt_for_continue may do so) so this routine should not be
2081 called when cleanups are not in place. */
2084 vfprintf_maybe_filtered (struct ui_file
*stream
, const char *format
,
2085 va_list args
, int filter
)
2088 struct cleanup
*old_cleanups
;
2090 linebuffer
= xstrvprintf (format
, args
);
2091 old_cleanups
= make_cleanup (xfree
, linebuffer
);
2092 fputs_maybe_filtered (linebuffer
, stream
, filter
);
2093 do_cleanups (old_cleanups
);
2098 vfprintf_filtered (struct ui_file
*stream
, const char *format
, va_list args
)
2100 vfprintf_maybe_filtered (stream
, format
, args
, 1);
2104 vfprintf_unfiltered (struct ui_file
*stream
, const char *format
, va_list args
)
2107 struct cleanup
*old_cleanups
;
2109 linebuffer
= xstrvprintf (format
, args
);
2110 old_cleanups
= make_cleanup (xfree
, linebuffer
);
2111 if (debug_timestamp
&& stream
== gdb_stdlog
)
2116 gettimeofday (&tm
, NULL
);
2117 timestamp
= xstrprintf ("%ld:%ld ", (long) tm
.tv_sec
, (long) tm
.tv_usec
);
2118 make_cleanup (xfree
, timestamp
);
2119 fputs_unfiltered (timestamp
, stream
);
2121 fputs_unfiltered (linebuffer
, stream
);
2122 do_cleanups (old_cleanups
);
2126 vprintf_filtered (const char *format
, va_list args
)
2128 vfprintf_maybe_filtered (gdb_stdout
, format
, args
, 1);
2132 vprintf_unfiltered (const char *format
, va_list args
)
2134 vfprintf_unfiltered (gdb_stdout
, format
, args
);
2138 fprintf_filtered (struct ui_file
*stream
, const char *format
, ...)
2141 va_start (args
, format
);
2142 vfprintf_filtered (stream
, format
, args
);
2147 fprintf_unfiltered (struct ui_file
*stream
, const char *format
, ...)
2150 va_start (args
, format
);
2151 vfprintf_unfiltered (stream
, format
, args
);
2155 /* Like fprintf_filtered, but prints its result indented.
2156 Called as fprintfi_filtered (spaces, stream, format, ...); */
2159 fprintfi_filtered (int spaces
, struct ui_file
*stream
, const char *format
,
2163 va_start (args
, format
);
2164 print_spaces_filtered (spaces
, stream
);
2166 vfprintf_filtered (stream
, format
, args
);
2172 printf_filtered (const char *format
, ...)
2175 va_start (args
, format
);
2176 vfprintf_filtered (gdb_stdout
, format
, args
);
2182 printf_unfiltered (const char *format
, ...)
2185 va_start (args
, format
);
2186 vfprintf_unfiltered (gdb_stdout
, format
, args
);
2190 /* Like printf_filtered, but prints it's result indented.
2191 Called as printfi_filtered (spaces, format, ...); */
2194 printfi_filtered (int spaces
, const char *format
, ...)
2197 va_start (args
, format
);
2198 print_spaces_filtered (spaces
, gdb_stdout
);
2199 vfprintf_filtered (gdb_stdout
, format
, args
);
2203 /* Easy -- but watch out!
2205 This routine is *not* a replacement for puts()! puts() appends a newline.
2206 This one doesn't, and had better not! */
2209 puts_filtered (const char *string
)
2211 fputs_filtered (string
, gdb_stdout
);
2215 puts_unfiltered (const char *string
)
2217 fputs_unfiltered (string
, gdb_stdout
);
2220 /* Return a pointer to N spaces and a null. The pointer is good
2221 until the next call to here. */
2226 static char *spaces
= 0;
2227 static int max_spaces
= -1;
2233 spaces
= (char *) xmalloc (n
+ 1);
2234 for (t
= spaces
+ n
; t
!= spaces
;)
2240 return spaces
+ max_spaces
- n
;
2243 /* Print N spaces. */
2245 print_spaces_filtered (int n
, struct ui_file
*stream
)
2247 fputs_filtered (n_spaces (n
), stream
);
2250 /* C++/ObjC demangler stuff. */
2252 /* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language
2253 LANG, using demangling args ARG_MODE, and print it filtered to STREAM.
2254 If the name is not mangled, or the language for the name is unknown, or
2255 demangling is off, the name is printed in its "raw" form. */
2258 fprintf_symbol_filtered (struct ui_file
*stream
, char *name
,
2259 enum language lang
, int arg_mode
)
2265 /* If user wants to see raw output, no problem. */
2268 fputs_filtered (name
, stream
);
2272 demangled
= language_demangle (language_def (lang
), name
, arg_mode
);
2273 fputs_filtered (demangled
? demangled
: name
, stream
);
2274 if (demangled
!= NULL
)
2282 /* Do a strcmp() type operation on STRING1 and STRING2, ignoring any
2283 differences in whitespace. Returns 0 if they match, non-zero if they
2284 don't (slightly different than strcmp()'s range of return values).
2286 As an extra hack, string1=="FOO(ARGS)" matches string2=="FOO".
2287 This "feature" is useful when searching for matching C++ function names
2288 (such as if the user types 'break FOO', where FOO is a mangled C++
2292 strcmp_iw (const char *string1
, const char *string2
)
2294 while ((*string1
!= '\0') && (*string2
!= '\0'))
2296 while (isspace (*string1
))
2300 while (isspace (*string2
))
2304 if (*string1
!= *string2
)
2308 if (*string1
!= '\0')
2314 return (*string1
!= '\0' && *string1
!= '(') || (*string2
!= '\0');
2317 /* This is like strcmp except that it ignores whitespace and treats
2318 '(' as the first non-NULL character in terms of ordering. Like
2319 strcmp (and unlike strcmp_iw), it returns negative if STRING1 <
2320 STRING2, 0 if STRING2 = STRING2, and positive if STRING1 > STRING2
2321 according to that ordering.
2323 If a list is sorted according to this function and if you want to
2324 find names in the list that match some fixed NAME according to
2325 strcmp_iw(LIST_ELT, NAME), then the place to start looking is right
2326 where this function would put NAME.
2328 Here are some examples of why using strcmp to sort is a bad idea:
2332 Say your partial symtab contains: "foo<char *>", "goo". Then, if
2333 we try to do a search for "foo<char*>", strcmp will locate this
2334 after "foo<char *>" and before "goo". Then lookup_partial_symbol
2335 will start looking at strings beginning with "goo", and will never
2336 see the correct match of "foo<char *>".
2338 Parenthesis example:
2340 In practice, this is less like to be an issue, but I'll give it a
2341 shot. Let's assume that '$' is a legitimate character to occur in
2342 symbols. (Which may well even be the case on some systems.) Then
2343 say that the partial symbol table contains "foo$" and "foo(int)".
2344 strcmp will put them in this order, since '$' < '('. Now, if the
2345 user searches for "foo", then strcmp will sort "foo" before "foo$".
2346 Then lookup_partial_symbol will notice that strcmp_iw("foo$",
2347 "foo") is false, so it won't proceed to the actual match of
2348 "foo(int)" with "foo". */
2351 strcmp_iw_ordered (const char *string1
, const char *string2
)
2353 while ((*string1
!= '\0') && (*string2
!= '\0'))
2355 while (isspace (*string1
))
2359 while (isspace (*string2
))
2363 if (*string1
!= *string2
)
2367 if (*string1
!= '\0')
2376 /* Characters are non-equal unless they're both '\0'; we want to
2377 make sure we get the comparison right according to our
2378 comparison in the cases where one of them is '\0' or '('. */
2380 if (*string2
== '\0')
2385 if (*string2
== '\0')
2390 if (*string2
== '(')
2393 return *string1
- *string2
;
2397 /* A simple comparison function with opposite semantics to strcmp. */
2400 streq (const char *lhs
, const char *rhs
)
2402 return !strcmp (lhs
, rhs
);
2408 ** Answer whether string_to_compare is a full or partial match to
2409 ** template_string. The partial match must be in sequence starting
2413 subset_compare (char *string_to_compare
, char *template_string
)
2416 if (template_string
!= (char *) NULL
&& string_to_compare
!= (char *) NULL
2417 && strlen (string_to_compare
) <= strlen (template_string
))
2420 (template_string
, string_to_compare
, strlen (string_to_compare
)) == 0);
2427 pagination_on_command (char *arg
, int from_tty
)
2429 pagination_enabled
= 1;
2433 pagination_off_command (char *arg
, int from_tty
)
2435 pagination_enabled
= 0;
2439 show_debug_timestamp (struct ui_file
*file
, int from_tty
,
2440 struct cmd_list_element
*c
, const char *value
)
2442 fprintf_filtered (file
, _("Timestamping debugging messages is %s.\n"), value
);
2447 initialize_utils (void)
2449 struct cmd_list_element
*c
;
2451 add_setshow_uinteger_cmd ("width", class_support
, &chars_per_line
, _("\
2452 Set number of characters gdb thinks are in a line."), _("\
2453 Show number of characters gdb thinks are in a line."), NULL
,
2455 show_chars_per_line
,
2456 &setlist
, &showlist
);
2458 add_setshow_uinteger_cmd ("height", class_support
, &lines_per_page
, _("\
2459 Set number of lines gdb thinks are in a page."), _("\
2460 Show number of lines gdb thinks are in a page."), NULL
,
2462 show_lines_per_page
,
2463 &setlist
, &showlist
);
2467 add_setshow_boolean_cmd ("demangle", class_support
, &demangle
, _("\
2468 Set demangling of encoded C++/ObjC names when displaying symbols."), _("\
2469 Show demangling of encoded C++/ObjC names when displaying symbols."), NULL
,
2472 &setprintlist
, &showprintlist
);
2474 add_setshow_boolean_cmd ("pagination", class_support
,
2475 &pagination_enabled
, _("\
2476 Set state of pagination."), _("\
2477 Show state of pagination."), NULL
,
2479 show_pagination_enabled
,
2480 &setlist
, &showlist
);
2484 add_com ("am", class_support
, pagination_on_command
,
2485 _("Enable pagination"));
2486 add_com ("sm", class_support
, pagination_off_command
,
2487 _("Disable pagination"));
2490 add_setshow_boolean_cmd ("sevenbit-strings", class_support
,
2491 &sevenbit_strings
, _("\
2492 Set printing of 8-bit characters in strings as \\nnn."), _("\
2493 Show printing of 8-bit characters in strings as \\nnn."), NULL
,
2495 show_sevenbit_strings
,
2496 &setprintlist
, &showprintlist
);
2498 add_setshow_boolean_cmd ("asm-demangle", class_support
, &asm_demangle
, _("\
2499 Set demangling of C++/ObjC names in disassembly listings."), _("\
2500 Show demangling of C++/ObjC names in disassembly listings."), NULL
,
2503 &setprintlist
, &showprintlist
);
2505 add_setshow_boolean_cmd ("timestamp", class_maintenance
,
2506 &debug_timestamp
, _("\
2507 Set timestamping of debugging messages."), _("\
2508 Show timestamping of debugging messages."), _("\
2509 When set, debugging messages will be marked with seconds and microseconds."),
2511 show_debug_timestamp
,
2512 &setdebuglist
, &showdebuglist
);
2515 /* Machine specific function to handle SIGWINCH signal. */
2517 #ifdef SIGWINCH_HANDLER_BODY
2518 SIGWINCH_HANDLER_BODY
2520 /* print routines to handle variable size regs, etc. */
2521 /* temporary storage using circular buffer */
2527 static char buf
[NUMCELLS
][CELLSIZE
];
2528 static int cell
= 0;
2529 if (++cell
>= NUMCELLS
)
2537 return (gdbarch_addr_bit (current_gdbarch
) / 8 * 2);
2541 paddr (CORE_ADDR addr
)
2543 return phex (addr
, gdbarch_addr_bit (current_gdbarch
) / 8);
2547 paddr_nz (CORE_ADDR addr
)
2549 return phex_nz (addr
, gdbarch_addr_bit (current_gdbarch
) / 8);
2553 paddress (CORE_ADDR addr
)
2555 /* Truncate address to the size of a target address, avoiding shifts
2556 larger or equal than the width of a CORE_ADDR. The local
2557 variable ADDR_BIT stops the compiler reporting a shift overflow
2558 when it won't occur. */
2559 /* NOTE: This assumes that the significant address information is
2560 kept in the least significant bits of ADDR - the upper bits were
2561 either zero or sign extended. Should gdbarch_address_to_pointer or
2562 some ADDRESS_TO_PRINTABLE() be used to do the conversion? */
2564 int addr_bit
= gdbarch_addr_bit (current_gdbarch
);
2566 if (addr_bit
< (sizeof (CORE_ADDR
) * HOST_CHAR_BIT
))
2567 addr
&= ((CORE_ADDR
) 1 << addr_bit
) - 1;
2568 return hex_string (addr
);
2572 decimal2str (char *sign
, ULONGEST addr
, int width
)
2574 /* Steal code from valprint.c:print_decimal(). Should this worry
2575 about the real size of addr as the above does? */
2576 unsigned long temp
[3];
2577 char *str
= get_cell ();
2582 temp
[i
] = addr
% (1000 * 1000 * 1000);
2583 addr
/= (1000 * 1000 * 1000);
2587 while (addr
!= 0 && i
< (sizeof (temp
) / sizeof (temp
[0])));
2596 xsnprintf (str
, CELLSIZE
, "%s%0*lu", sign
, width
, temp
[0]);
2599 xsnprintf (str
, CELLSIZE
, "%s%0*lu%09lu", sign
, width
,
2603 xsnprintf (str
, CELLSIZE
, "%s%0*lu%09lu%09lu", sign
, width
,
2604 temp
[2], temp
[1], temp
[0]);
2607 internal_error (__FILE__
, __LINE__
,
2608 _("failed internal consistency check"));
2615 octal2str (ULONGEST addr
, int width
)
2617 unsigned long temp
[3];
2618 char *str
= get_cell ();
2623 temp
[i
] = addr
% (0100000 * 0100000);
2624 addr
/= (0100000 * 0100000);
2628 while (addr
!= 0 && i
< (sizeof (temp
) / sizeof (temp
[0])));
2638 xsnprintf (str
, CELLSIZE
, "%*o", width
, 0);
2640 xsnprintf (str
, CELLSIZE
, "0%0*lo", width
, temp
[0]);
2643 xsnprintf (str
, CELLSIZE
, "0%0*lo%010lo", width
, temp
[1], temp
[0]);
2646 xsnprintf (str
, CELLSIZE
, "0%0*lo%010lo%010lo", width
,
2647 temp
[2], temp
[1], temp
[0]);
2650 internal_error (__FILE__
, __LINE__
,
2651 _("failed internal consistency check"));
2658 paddr_u (CORE_ADDR addr
)
2660 return decimal2str ("", addr
, 0);
2664 paddr_d (LONGEST addr
)
2667 return decimal2str ("-", -addr
, 0);
2669 return decimal2str ("", addr
, 0);
2672 /* Eliminate warning from compiler on 32-bit systems. */
2673 static int thirty_two
= 32;
2676 phex (ULONGEST l
, int sizeof_l
)
2684 xsnprintf (str
, CELLSIZE
, "%08lx%08lx",
2685 (unsigned long) (l
>> thirty_two
),
2686 (unsigned long) (l
& 0xffffffff));
2690 xsnprintf (str
, CELLSIZE
, "%08lx", (unsigned long) l
);
2694 xsnprintf (str
, CELLSIZE
, "%04x", (unsigned short) (l
& 0xffff));
2697 str
= phex (l
, sizeof (l
));
2705 phex_nz (ULONGEST l
, int sizeof_l
)
2713 unsigned long high
= (unsigned long) (l
>> thirty_two
);
2716 xsnprintf (str
, CELLSIZE
, "%lx",
2717 (unsigned long) (l
& 0xffffffff));
2719 xsnprintf (str
, CELLSIZE
, "%lx%08lx", high
,
2720 (unsigned long) (l
& 0xffffffff));
2725 xsnprintf (str
, CELLSIZE
, "%lx", (unsigned long) l
);
2729 xsnprintf (str
, CELLSIZE
, "%x", (unsigned short) (l
& 0xffff));
2732 str
= phex_nz (l
, sizeof (l
));
2739 /* Converts a LONGEST to a C-format hexadecimal literal and stores it
2740 in a static string. Returns a pointer to this string. */
2742 hex_string (LONGEST num
)
2744 char *result
= get_cell ();
2745 xsnprintf (result
, CELLSIZE
, "0x%s", phex_nz (num
, sizeof (num
)));
2749 /* Converts a LONGEST number to a C-format hexadecimal literal and
2750 stores it in a static string. Returns a pointer to this string
2751 that is valid until the next call. The number is padded on the
2752 left with 0s to at least WIDTH characters. */
2754 hex_string_custom (LONGEST num
, int width
)
2756 char *result
= get_cell ();
2757 char *result_end
= result
+ CELLSIZE
- 1;
2758 const char *hex
= phex_nz (num
, sizeof (num
));
2759 int hex_len
= strlen (hex
);
2761 if (hex_len
> width
)
2763 if (width
+ 2 >= CELLSIZE
)
2764 internal_error (__FILE__
, __LINE__
,
2765 _("hex_string_custom: insufficient space to store result"));
2767 strcpy (result_end
- width
- 2, "0x");
2768 memset (result_end
- width
, '0', width
);
2769 strcpy (result_end
- hex_len
, hex
);
2770 return result_end
- width
- 2;
2773 /* Convert VAL to a numeral in the given radix. For
2774 * radix 10, IS_SIGNED may be true, indicating a signed quantity;
2775 * otherwise VAL is interpreted as unsigned. If WIDTH is supplied,
2776 * it is the minimum width (0-padded if needed). USE_C_FORMAT means
2777 * to use C format in all cases. If it is false, then 'x'
2778 * and 'o' formats do not include a prefix (0x or leading 0). */
2781 int_string (LONGEST val
, int radix
, int is_signed
, int width
,
2790 result
= hex_string (val
);
2792 result
= hex_string_custom (val
, width
);
2799 if (is_signed
&& val
< 0)
2800 return decimal2str ("-", -val
, width
);
2802 return decimal2str ("", val
, width
);
2806 char *result
= octal2str (val
, width
);
2807 if (use_c_format
|| val
== 0)
2813 internal_error (__FILE__
, __LINE__
,
2814 _("failed internal consistency check"));
2818 /* Convert a CORE_ADDR into a string. */
2820 core_addr_to_string (const CORE_ADDR addr
)
2822 char *str
= get_cell ();
2824 strcat (str
, phex (addr
, sizeof (addr
)));
2829 core_addr_to_string_nz (const CORE_ADDR addr
)
2831 char *str
= get_cell ();
2833 strcat (str
, phex_nz (addr
, sizeof (addr
)));
2837 /* Convert a string back into a CORE_ADDR. */
2839 string_to_core_addr (const char *my_string
)
2841 int addr_bit
= gdbarch_addr_bit (current_gdbarch
);
2844 if (my_string
[0] == '0' && tolower (my_string
[1]) == 'x')
2846 /* Assume that it is in hex. */
2848 for (i
= 2; my_string
[i
] != '\0'; i
++)
2850 if (isdigit (my_string
[i
]))
2851 addr
= (my_string
[i
] - '0') + (addr
* 16);
2852 else if (isxdigit (my_string
[i
]))
2853 addr
= (tolower (my_string
[i
]) - 'a' + 0xa) + (addr
* 16);
2855 error (_("invalid hex \"%s\""), my_string
);
2858 /* Not very modular, but if the executable format expects
2859 addresses to be sign-extended, then do so if the address was
2860 specified with only 32 significant bits. Really this should
2861 be determined by the target architecture, not by the object
2863 if (i
- 2 == addr_bit
/ 4
2865 && bfd_get_sign_extend_vma (exec_bfd
))
2866 addr
= (addr
^ ((CORE_ADDR
) 1 << (addr_bit
- 1)))
2867 - ((CORE_ADDR
) 1 << (addr_bit
- 1));
2871 /* Assume that it is in decimal. */
2873 for (i
= 0; my_string
[i
] != '\0'; i
++)
2875 if (isdigit (my_string
[i
]))
2876 addr
= (my_string
[i
] - '0') + (addr
* 10);
2878 error (_("invalid decimal \"%s\""), my_string
);
2886 gdb_realpath (const char *filename
)
2888 /* Method 1: The system has a compile time upper bound on a filename
2889 path. Use that and realpath() to canonicalize the name. This is
2890 the most common case. Note that, if there isn't a compile time
2891 upper bound, you want to avoid realpath() at all costs. */
2892 #if defined(HAVE_REALPATH)
2894 # if defined (PATH_MAX)
2896 # define USE_REALPATH
2897 # elif defined (MAXPATHLEN)
2898 char buf
[MAXPATHLEN
];
2899 # define USE_REALPATH
2901 # if defined (USE_REALPATH)
2902 const char *rp
= realpath (filename
, buf
);
2905 return xstrdup (rp
);
2908 #endif /* HAVE_REALPATH */
2910 /* Method 2: The host system (i.e., GNU) has the function
2911 canonicalize_file_name() which malloc's a chunk of memory and
2912 returns that, use that. */
2913 #if defined(HAVE_CANONICALIZE_FILE_NAME)
2915 char *rp
= canonicalize_file_name (filename
);
2917 return xstrdup (filename
);
2923 /* FIXME: cagney/2002-11-13:
2925 Method 2a: Use realpath() with a NULL buffer. Some systems, due
2926 to the problems described in in method 3, have modified their
2927 realpath() implementation so that it will allocate a buffer when
2928 NULL is passed in. Before this can be used, though, some sort of
2929 configure time test would need to be added. Otherwize the code
2930 will likely core dump. */
2932 /* Method 3: Now we're getting desperate! The system doesn't have a
2933 compile time buffer size and no alternative function. Query the
2934 OS, using pathconf(), for the buffer limit. Care is needed
2935 though, some systems do not limit PATH_MAX (return -1 for
2936 pathconf()) making it impossible to pass a correctly sized buffer
2937 to realpath() (it could always overflow). On those systems, we
2939 #if defined (HAVE_REALPATH) && defined (HAVE_UNISTD_H) && defined(HAVE_ALLOCA)
2941 /* Find out the max path size. */
2942 long path_max
= pathconf ("/", _PC_PATH_MAX
);
2945 /* PATH_MAX is bounded. */
2946 char *buf
= alloca (path_max
);
2947 char *rp
= realpath (filename
, buf
);
2948 return xstrdup (rp
? rp
: filename
);
2953 /* This system is a lost cause, just dup the buffer. */
2954 return xstrdup (filename
);
2957 /* Return a copy of FILENAME, with its directory prefix canonicalized
2961 xfullpath (const char *filename
)
2963 const char *base_name
= lbasename (filename
);
2968 /* Extract the basename of filename, and return immediately
2969 a copy of filename if it does not contain any directory prefix. */
2970 if (base_name
== filename
)
2971 return xstrdup (filename
);
2973 dir_name
= alloca ((size_t) (base_name
- filename
+ 2));
2974 /* Allocate enough space to store the dir_name + plus one extra
2975 character sometimes needed under Windows (see below), and
2976 then the closing \000 character */
2977 strncpy (dir_name
, filename
, base_name
- filename
);
2978 dir_name
[base_name
- filename
] = '\000';
2980 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
2981 /* We need to be careful when filename is of the form 'd:foo', which
2982 is equivalent of d:./foo, which is totally different from d:/foo. */
2983 if (strlen (dir_name
) == 2 && isalpha (dir_name
[0]) && dir_name
[1] == ':')
2986 dir_name
[3] = '\000';
2990 /* Canonicalize the directory prefix, and build the resulting
2991 filename. If the dirname realpath already contains an ending
2992 directory separator, avoid doubling it. */
2993 real_path
= gdb_realpath (dir_name
);
2994 if (IS_DIR_SEPARATOR (real_path
[strlen (real_path
) - 1]))
2995 result
= concat (real_path
, base_name
, (char *)NULL
);
2997 result
= concat (real_path
, SLASH_STRING
, base_name
, (char *)NULL
);
3004 /* This is the 32-bit CRC function used by the GNU separate debug
3005 facility. An executable may contain a section named
3006 .gnu_debuglink, which holds the name of a separate executable file
3007 containing its debug info, and a checksum of that file's contents,
3008 computed using this function. */
3010 gnu_debuglink_crc32 (unsigned long crc
, unsigned char *buf
, size_t len
)
3012 static const unsigned long crc32_table
[256] = {
3013 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419,
3014 0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4,
3015 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07,
3016 0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,
3017 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856,
3018 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
3019 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4,
3020 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
3021 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3,
3022 0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a,
3023 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599,
3024 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
3025 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190,
3026 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f,
3027 0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e,
3028 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
3029 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed,
3030 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
3031 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3,
3032 0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2,
3033 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a,
3034 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5,
3035 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010,
3036 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
3037 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17,
3038 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6,
3039 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615,
3040 0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,
3041 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344,
3042 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
3043 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a,
3044 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
3045 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1,
3046 0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c,
3047 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef,
3048 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
3049 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe,
3050 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31,
3051 0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c,
3052 0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
3053 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b,
3054 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
3055 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1,
3056 0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,
3057 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278,
3058 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7,
3059 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66,
3060 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
3061 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605,
3062 0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8,
3063 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b,
3068 crc
= ~crc
& 0xffffffff;
3069 for (end
= buf
+ len
; buf
< end
; ++buf
)
3070 crc
= crc32_table
[(crc
^ *buf
) & 0xff] ^ (crc
>> 8);
3071 return ~crc
& 0xffffffff;;
3075 align_up (ULONGEST v
, int n
)
3077 /* Check that N is really a power of two. */
3078 gdb_assert (n
&& (n
& (n
-1)) == 0);
3079 return (v
+ n
- 1) & -n
;
3083 align_down (ULONGEST v
, int n
)
3085 /* Check that N is really a power of two. */
3086 gdb_assert (n
&& (n
& (n
-1)) == 0);
3090 /* Allocation function for the libiberty hash table which uses an
3091 obstack. The obstack is passed as DATA. */
3094 hashtab_obstack_allocate (void *data
, size_t size
, size_t count
)
3096 unsigned int total
= size
* count
;
3097 void *ptr
= obstack_alloc ((struct obstack
*) data
, total
);
3098 memset (ptr
, 0, total
);
3102 /* Trivial deallocation function for the libiberty splay tree and hash
3103 table - don't deallocate anything. Rely on later deletion of the
3104 obstack. DATA will be the obstack, although it is not needed
3108 dummy_obstack_deallocate (void *object
, void *data
)
3113 /* The bit offset of the highest byte in a ULONGEST, for overflow
3116 #define HIGH_BYTE_POSN ((sizeof (ULONGEST) - 1) * HOST_CHAR_BIT)
3118 /* True (non-zero) iff DIGIT is a valid digit in radix BASE,
3119 where 2 <= BASE <= 36. */
3122 is_digit_in_base (unsigned char digit
, int base
)
3124 if (!isalnum (digit
))
3127 return (isdigit (digit
) && digit
< base
+ '0');
3129 return (isdigit (digit
) || tolower (digit
) < base
- 10 + 'a');
3133 digit_to_int (unsigned char c
)
3138 return tolower (c
) - 'a' + 10;
3141 /* As for strtoul, but for ULONGEST results. */
3144 strtoulst (const char *num
, const char **trailer
, int base
)
3146 unsigned int high_part
;
3151 /* Skip leading whitespace. */
3152 while (isspace (num
[i
]))
3155 /* Handle prefixes. */
3158 else if (num
[i
] == '-')
3164 if (base
== 0 || base
== 16)
3166 if (num
[i
] == '0' && (num
[i
+ 1] == 'x' || num
[i
+ 1] == 'X'))
3174 if (base
== 0 && num
[i
] == '0')
3180 if (base
< 2 || base
> 36)
3186 result
= high_part
= 0;
3187 for (; is_digit_in_base (num
[i
], base
); i
+= 1)
3189 result
= result
* base
+ digit_to_int (num
[i
]);
3190 high_part
= high_part
* base
+ (unsigned int) (result
>> HIGH_BYTE_POSN
);
3191 result
&= ((ULONGEST
) 1 << HIGH_BYTE_POSN
) - 1;
3192 if (high_part
> 0xff)
3195 result
= ~ (ULONGEST
) 0;
3202 if (trailer
!= NULL
)
3205 result
= result
+ ((ULONGEST
) high_part
<< HIGH_BYTE_POSN
);
3212 /* Simple, portable version of dirname that does not modify its
3216 ldirname (const char *filename
)
3218 const char *base
= lbasename (filename
);
3221 while (base
> filename
&& IS_DIR_SEPARATOR (base
[-1]))
3224 if (base
== filename
)
3227 dirname
= xmalloc (base
- filename
+ 2);
3228 memcpy (dirname
, filename
, base
- filename
);
3230 /* On DOS based file systems, convert "d:foo" to "d:.", so that we
3231 create "d:./bar" later instead of the (different) "d:/bar". */
3232 if (base
- filename
== 2 && IS_ABSOLUTE_PATH (base
)
3233 && !IS_DIR_SEPARATOR (filename
[0]))
3234 dirname
[base
++ - filename
] = '.';
3236 dirname
[base
- filename
] = '\0';