1 /* General utility routines for GDB, the GNU debugger.
2 Copyright 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
3 1996, 1997, 1998, 1999, 2000, 2001, 2002
4 Free Software Foundation, Inc.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA. */
23 /* FIXME: cagney/2002-02-28: The GDB coding standard indicates that
24 "defs.h" should be included first. Unfortunatly some systems
25 (currently Debian GNU/Linux) include the <stdbool.h> via <curses.h>
26 and they clash with "bfd.h"'s definiton of true/false. The correct
27 fix is to remove true/false from "bfd.h", however, until that
28 happens, hack around it by including "config.h" and <curses.h>
41 #include "gdb_assert.h"
43 #include "gdb_string.h"
44 #include "event-top.h"
50 /* SunOS's curses.h has a '#define reg register' in it. Thank you Sun. */
61 #include "expression.h"
65 #include "inferior.h" /* for signed_pointer_to_address */
67 #include <sys/param.h> /* For MAXPATHLEN */
69 #include <readline/readline.h>
75 #ifdef NEED_DECLARATION_MALLOC
78 #ifdef NEED_DECLARATION_REALLOC
79 extern PTR
realloc ();
81 #ifdef NEED_DECLARATION_FREE
84 /* Actually, we'll never have the decl, since we don't define _GNU_SOURCE. */
85 #if defined(HAVE_CANONICALIZE_FILE_NAME) \
86 && defined(NEED_DECLARATION_CANONICALIZE_FILE_NAME)
87 extern char *canonicalize_file_name (const char *);
90 /* readline defines this. */
93 void (*error_begin_hook
) (void);
95 /* Holds the last error message issued by gdb */
97 static struct ui_file
*gdb_lasterr
;
99 /* Prototypes for local functions */
101 static void vfprintf_maybe_filtered (struct ui_file
*, const char *,
104 static void fputs_maybe_filtered (const char *, struct ui_file
*, int);
106 #if defined (USE_MMALLOC) && !defined (NO_MMCHECK)
107 static void malloc_botch (void);
110 static void prompt_for_continue (void);
112 static void set_width_command (char *, int, struct cmd_list_element
*);
114 static void set_width (void);
116 /* Chain of cleanup actions established with make_cleanup,
117 to be executed if an error happens. */
119 static struct cleanup
*cleanup_chain
; /* cleaned up after a failed command */
120 static struct cleanup
*final_cleanup_chain
; /* cleaned up when gdb exits */
121 static struct cleanup
*run_cleanup_chain
; /* cleaned up on each 'run' */
122 static struct cleanup
*exec_cleanup_chain
; /* cleaned up on each execution command */
123 /* cleaned up on each error from within an execution command */
124 static struct cleanup
*exec_error_cleanup_chain
;
126 /* Pointer to what is left to do for an execution command after the
127 target stops. Used only in asynchronous mode, by targets that
128 support async execution. The finish and until commands use it. So
129 does the target extended-remote command. */
130 struct continuation
*cmd_continuation
;
131 struct continuation
*intermediate_continuation
;
133 /* Nonzero if we have job control. */
137 /* Nonzero means a quit has been requested. */
141 /* Nonzero means quit immediately if Control-C is typed now, rather
142 than waiting until QUIT is executed. Be careful in setting this;
143 code which executes with immediate_quit set has to be very careful
144 about being able to deal with being interrupted at any time. It is
145 almost always better to use QUIT; the only exception I can think of
146 is being able to quit out of a system call (using EINTR loses if
147 the SIGINT happens between the previous QUIT and the system call).
148 To immediately quit in the case in which a SIGINT happens between
149 the previous QUIT and setting immediate_quit (desirable anytime we
150 expect to block), call QUIT after setting immediate_quit. */
154 /* Nonzero means that encoded C++ names should be printed out in their
155 C++ form rather than raw. */
159 /* Nonzero means that encoded C++ names should be printed out in their
160 C++ form even in assembler language displays. If this is set, but
161 DEMANGLE is zero, names are printed raw, i.e. DEMANGLE controls. */
163 int asm_demangle
= 0;
165 /* Nonzero means that strings with character values >0x7F should be printed
166 as octal escapes. Zero means just print the value (e.g. it's an
167 international character, and the terminal or window can cope.) */
169 int sevenbit_strings
= 0;
171 /* String to be printed before error messages, if any. */
173 char *error_pre_print
;
175 /* String to be printed before quit messages, if any. */
177 char *quit_pre_print
;
179 /* String to be printed before warning messages, if any. */
181 char *warning_pre_print
= "\nwarning: ";
183 int pagination_enabled
= 1;
186 /* Add a new cleanup to the cleanup_chain,
187 and return the previous chain pointer
188 to be passed later to do_cleanups or discard_cleanups.
189 Args are FUNCTION to clean up with, and ARG to pass to it. */
192 make_cleanup (make_cleanup_ftype
*function
, void *arg
)
194 return make_my_cleanup (&cleanup_chain
, function
, arg
);
198 make_final_cleanup (make_cleanup_ftype
*function
, void *arg
)
200 return make_my_cleanup (&final_cleanup_chain
, function
, arg
);
204 make_run_cleanup (make_cleanup_ftype
*function
, void *arg
)
206 return make_my_cleanup (&run_cleanup_chain
, function
, arg
);
210 make_exec_cleanup (make_cleanup_ftype
*function
, void *arg
)
212 return make_my_cleanup (&exec_cleanup_chain
, function
, arg
);
216 make_exec_error_cleanup (make_cleanup_ftype
*function
, void *arg
)
218 return make_my_cleanup (&exec_error_cleanup_chain
, function
, arg
);
222 do_freeargv (void *arg
)
224 freeargv ((char **) arg
);
228 make_cleanup_freeargv (char **arg
)
230 return make_my_cleanup (&cleanup_chain
, do_freeargv
, arg
);
234 do_bfd_close_cleanup (void *arg
)
240 make_cleanup_bfd_close (bfd
*abfd
)
242 return make_cleanup (do_bfd_close_cleanup
, abfd
);
246 do_close_cleanup (void *arg
)
254 make_cleanup_close (int fd
)
256 int *saved_fd
= xmalloc (sizeof (fd
));
258 return make_cleanup (do_close_cleanup
, saved_fd
);
262 do_ui_file_delete (void *arg
)
264 ui_file_delete (arg
);
268 make_cleanup_ui_file_delete (struct ui_file
*arg
)
270 return make_my_cleanup (&cleanup_chain
, do_ui_file_delete
, arg
);
274 make_my_cleanup (struct cleanup
**pmy_chain
, make_cleanup_ftype
*function
,
277 register struct cleanup
*new
278 = (struct cleanup
*) xmalloc (sizeof (struct cleanup
));
279 register struct cleanup
*old_chain
= *pmy_chain
;
281 new->next
= *pmy_chain
;
282 new->function
= function
;
289 /* Discard cleanups and do the actions they describe
290 until we get back to the point OLD_CHAIN in the cleanup_chain. */
293 do_cleanups (register struct cleanup
*old_chain
)
295 do_my_cleanups (&cleanup_chain
, old_chain
);
299 do_final_cleanups (register struct cleanup
*old_chain
)
301 do_my_cleanups (&final_cleanup_chain
, old_chain
);
305 do_run_cleanups (register struct cleanup
*old_chain
)
307 do_my_cleanups (&run_cleanup_chain
, old_chain
);
311 do_exec_cleanups (register struct cleanup
*old_chain
)
313 do_my_cleanups (&exec_cleanup_chain
, old_chain
);
317 do_exec_error_cleanups (register struct cleanup
*old_chain
)
319 do_my_cleanups (&exec_error_cleanup_chain
, old_chain
);
323 do_my_cleanups (register struct cleanup
**pmy_chain
,
324 register struct cleanup
*old_chain
)
326 register struct cleanup
*ptr
;
327 while ((ptr
= *pmy_chain
) != old_chain
)
329 *pmy_chain
= ptr
->next
; /* Do this first incase recursion */
330 (*ptr
->function
) (ptr
->arg
);
335 /* Discard cleanups, not doing the actions they describe,
336 until we get back to the point OLD_CHAIN in the cleanup_chain. */
339 discard_cleanups (register struct cleanup
*old_chain
)
341 discard_my_cleanups (&cleanup_chain
, old_chain
);
345 discard_final_cleanups (register struct cleanup
*old_chain
)
347 discard_my_cleanups (&final_cleanup_chain
, old_chain
);
351 discard_exec_error_cleanups (register struct cleanup
*old_chain
)
353 discard_my_cleanups (&exec_error_cleanup_chain
, old_chain
);
357 discard_my_cleanups (register struct cleanup
**pmy_chain
,
358 register struct cleanup
*old_chain
)
360 register struct cleanup
*ptr
;
361 while ((ptr
= *pmy_chain
) != old_chain
)
363 *pmy_chain
= ptr
->next
;
368 /* Set the cleanup_chain to 0, and return the old cleanup chain. */
372 return save_my_cleanups (&cleanup_chain
);
376 save_final_cleanups (void)
378 return save_my_cleanups (&final_cleanup_chain
);
382 save_my_cleanups (struct cleanup
**pmy_chain
)
384 struct cleanup
*old_chain
= *pmy_chain
;
390 /* Restore the cleanup chain from a previously saved chain. */
392 restore_cleanups (struct cleanup
*chain
)
394 restore_my_cleanups (&cleanup_chain
, chain
);
398 restore_final_cleanups (struct cleanup
*chain
)
400 restore_my_cleanups (&final_cleanup_chain
, chain
);
404 restore_my_cleanups (struct cleanup
**pmy_chain
, struct cleanup
*chain
)
409 /* This function is useful for cleanups.
413 old_chain = make_cleanup (free_current_contents, &foo);
415 to arrange to free the object thus allocated. */
418 free_current_contents (void *ptr
)
420 void **location
= ptr
;
421 if (location
== NULL
)
422 internal_error (__FILE__
, __LINE__
,
423 "free_current_contents: NULL pointer");
424 if (*location
!= NULL
)
431 /* Provide a known function that does nothing, to use as a base for
432 for a possibly long chain of cleanups. This is useful where we
433 use the cleanup chain for handling normal cleanups as well as dealing
434 with cleanups that need to be done as a result of a call to error().
435 In such cases, we may not be certain where the first cleanup is, unless
436 we have a do-nothing one to always use as the base. */
440 null_cleanup (void *arg
)
444 /* Add a continuation to the continuation list, the global list
445 cmd_continuation. The new continuation will be added at the front.*/
447 add_continuation (void (*continuation_hook
) (struct continuation_arg
*),
448 struct continuation_arg
*arg_list
)
450 struct continuation
*continuation_ptr
;
452 continuation_ptr
= (struct continuation
*) xmalloc (sizeof (struct continuation
));
453 continuation_ptr
->continuation_hook
= continuation_hook
;
454 continuation_ptr
->arg_list
= arg_list
;
455 continuation_ptr
->next
= cmd_continuation
;
456 cmd_continuation
= continuation_ptr
;
459 /* Walk down the cmd_continuation list, and execute all the
460 continuations. There is a problem though. In some cases new
461 continuations may be added while we are in the middle of this
462 loop. If this happens they will be added in the front, and done
463 before we have a chance of exhausting those that were already
464 there. We need to then save the beginning of the list in a pointer
465 and do the continuations from there on, instead of using the
466 global beginning of list as our iteration pointer.*/
468 do_all_continuations (void)
470 struct continuation
*continuation_ptr
;
471 struct continuation
*saved_continuation
;
473 /* Copy the list header into another pointer, and set the global
474 list header to null, so that the global list can change as a side
475 effect of invoking the continuations and the processing of
476 the preexisting continuations will not be affected. */
477 continuation_ptr
= cmd_continuation
;
478 cmd_continuation
= NULL
;
480 /* Work now on the list we have set aside. */
481 while (continuation_ptr
)
483 (continuation_ptr
->continuation_hook
) (continuation_ptr
->arg_list
);
484 saved_continuation
= continuation_ptr
;
485 continuation_ptr
= continuation_ptr
->next
;
486 xfree (saved_continuation
);
490 /* Walk down the cmd_continuation list, and get rid of all the
493 discard_all_continuations (void)
495 struct continuation
*continuation_ptr
;
497 while (cmd_continuation
)
499 continuation_ptr
= cmd_continuation
;
500 cmd_continuation
= continuation_ptr
->next
;
501 xfree (continuation_ptr
);
505 /* Add a continuation to the continuation list, the global list
506 intermediate_continuation. The new continuation will be added at the front.*/
508 add_intermediate_continuation (void (*continuation_hook
)
509 (struct continuation_arg
*),
510 struct continuation_arg
*arg_list
)
512 struct continuation
*continuation_ptr
;
514 continuation_ptr
= (struct continuation
*) xmalloc (sizeof (struct continuation
));
515 continuation_ptr
->continuation_hook
= continuation_hook
;
516 continuation_ptr
->arg_list
= arg_list
;
517 continuation_ptr
->next
= intermediate_continuation
;
518 intermediate_continuation
= continuation_ptr
;
521 /* Walk down the cmd_continuation list, and execute all the
522 continuations. There is a problem though. In some cases new
523 continuations may be added while we are in the middle of this
524 loop. If this happens they will be added in the front, and done
525 before we have a chance of exhausting those that were already
526 there. We need to then save the beginning of the list in a pointer
527 and do the continuations from there on, instead of using the
528 global beginning of list as our iteration pointer.*/
530 do_all_intermediate_continuations (void)
532 struct continuation
*continuation_ptr
;
533 struct continuation
*saved_continuation
;
535 /* Copy the list header into another pointer, and set the global
536 list header to null, so that the global list can change as a side
537 effect of invoking the continuations and the processing of
538 the preexisting continuations will not be affected. */
539 continuation_ptr
= intermediate_continuation
;
540 intermediate_continuation
= NULL
;
542 /* Work now on the list we have set aside. */
543 while (continuation_ptr
)
545 (continuation_ptr
->continuation_hook
) (continuation_ptr
->arg_list
);
546 saved_continuation
= continuation_ptr
;
547 continuation_ptr
= continuation_ptr
->next
;
548 xfree (saved_continuation
);
552 /* Walk down the cmd_continuation list, and get rid of all the
555 discard_all_intermediate_continuations (void)
557 struct continuation
*continuation_ptr
;
559 while (intermediate_continuation
)
561 continuation_ptr
= intermediate_continuation
;
562 intermediate_continuation
= continuation_ptr
->next
;
563 xfree (continuation_ptr
);
569 /* Print a warning message. The first argument STRING is the warning
570 message, used as an fprintf format string, the second is the
571 va_list of arguments for that string. A warning is unfiltered (not
572 paginated) so that the user does not need to page through each
573 screen full of warnings when there are lots of them. */
576 vwarning (const char *string
, va_list args
)
579 (*warning_hook
) (string
, args
);
582 target_terminal_ours ();
583 wrap_here (""); /* Force out any buffered output */
584 gdb_flush (gdb_stdout
);
585 if (warning_pre_print
)
586 fprintf_unfiltered (gdb_stderr
, warning_pre_print
);
587 vfprintf_unfiltered (gdb_stderr
, string
, args
);
588 fprintf_unfiltered (gdb_stderr
, "\n");
593 /* Print a warning message.
594 The first argument STRING is the warning message, used as a fprintf string,
595 and the remaining args are passed as arguments to it.
596 The primary difference between warnings and errors is that a warning
597 does not force the return to command level. */
600 warning (const char *string
,...)
603 va_start (args
, string
);
604 vwarning (string
, args
);
608 /* Print an error message and return to command level.
609 The first argument STRING is the error message, used as a fprintf string,
610 and the remaining args are passed as arguments to it. */
613 verror (const char *string
, va_list args
)
615 struct ui_file
*tmp_stream
= mem_fileopen ();
616 make_cleanup_ui_file_delete (tmp_stream
);
617 vfprintf_unfiltered (tmp_stream
, string
, args
);
618 error_stream (tmp_stream
);
622 error (const char *string
,...)
625 va_start (args
, string
);
626 verror (string
, args
);
631 do_write (void *data
, const char *buffer
, long length_buffer
)
633 ui_file_write (data
, buffer
, length_buffer
);
637 error_stream (struct ui_file
*stream
)
639 if (error_begin_hook
)
642 /* Copy the stream into the GDB_LASTERR buffer. */
643 ui_file_rewind (gdb_lasterr
);
644 ui_file_put (stream
, do_write
, gdb_lasterr
);
646 /* Write the message plus any error_pre_print to gdb_stderr. */
647 target_terminal_ours ();
648 wrap_here (""); /* Force out any buffered output */
649 gdb_flush (gdb_stdout
);
650 annotate_error_begin ();
652 fprintf_filtered (gdb_stderr
, error_pre_print
);
653 ui_file_put (stream
, do_write
, gdb_stderr
);
654 fprintf_filtered (gdb_stderr
, "\n");
656 throw_exception (RETURN_ERROR
);
659 /* Get the last error message issued by gdb */
662 error_last_message (void)
665 return ui_file_xstrdup (gdb_lasterr
, &len
);
668 /* This is to be called by main() at the very beginning */
673 gdb_lasterr
= mem_fileopen ();
676 /* Print a message reporting an internal error. Ask the user if they
677 want to continue, dump core, or just exit. */
680 internal_verror (const char *file
, int line
,
681 const char *fmt
, va_list ap
)
683 static char msg
[] = "Internal GDB error: recursive internal error.\n";
684 static int dejavu
= 0;
688 /* don't allow infinite error recursion. */
696 fputs_unfiltered (msg
, gdb_stderr
);
697 abort (); /* NOTE: GDB has only three calls to abort(). */
700 write (STDERR_FILENO
, msg
, sizeof (msg
));
704 /* Try to get the message out */
705 target_terminal_ours ();
706 fprintf_unfiltered (gdb_stderr
, "%s:%d: gdb-internal-error: ", file
, line
);
707 vfprintf_unfiltered (gdb_stderr
, fmt
, ap
);
708 fputs_unfiltered ("\n", gdb_stderr
);
710 /* Default (yes/batch case) is to quit GDB. When in batch mode this
711 lessens the likelhood of GDB going into an infinate loop. */
713 An internal GDB error was detected. This may make further\n\
714 debugging unreliable. Quit this debugging session? ");
716 /* Default (yes/batch case) is to dump core. This leaves a GDB
717 dropping so that it is easier to see that something went wrong to
719 dump_core_p
= query ("\
720 Create a core file containing the current state of GDB? ");
725 abort (); /* NOTE: GDB has only three calls to abort(). */
734 abort (); /* NOTE: GDB has only three calls to abort(). */
739 throw_exception (RETURN_ERROR
);
743 internal_error (const char *file
, int line
, const char *string
, ...)
746 va_start (ap
, string
);
748 internal_verror (file
, line
, string
, ap
);
752 /* The strerror() function can return NULL for errno values that are
753 out of range. Provide a "safe" version that always returns a
757 safe_strerror (int errnum
)
762 if ((msg
= strerror (errnum
)) == NULL
)
764 sprintf (buf
, "(undocumented errno %d)", errnum
);
770 /* Print the system error message for errno, and also mention STRING
771 as the file name for which the error was encountered.
772 Then return to command level. */
775 perror_with_name (const char *string
)
780 err
= safe_strerror (errno
);
781 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
782 strcpy (combined
, string
);
783 strcat (combined
, ": ");
784 strcat (combined
, err
);
786 /* I understand setting these is a matter of taste. Still, some people
787 may clear errno but not know about bfd_error. Doing this here is not
789 bfd_set_error (bfd_error_no_error
);
792 error ("%s.", combined
);
795 /* Print the system error message for ERRCODE, and also mention STRING
796 as the file name for which the error was encountered. */
799 print_sys_errmsg (const char *string
, int errcode
)
804 err
= safe_strerror (errcode
);
805 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
806 strcpy (combined
, string
);
807 strcat (combined
, ": ");
808 strcat (combined
, err
);
810 /* We want anything which was printed on stdout to come out first, before
812 gdb_flush (gdb_stdout
);
813 fprintf_unfiltered (gdb_stderr
, "%s.\n", combined
);
816 /* Control C eventually causes this to be called, at a convenient time. */
821 struct serial
*gdb_stdout_serial
= serial_fdopen (1);
823 target_terminal_ours ();
825 /* We want all output to appear now, before we print "Quit". We
826 have 3 levels of buffering we have to flush (it's possible that
827 some of these should be changed to flush the lower-level ones
830 /* 1. The _filtered buffer. */
831 wrap_here ((char *) 0);
833 /* 2. The stdio buffer. */
834 gdb_flush (gdb_stdout
);
835 gdb_flush (gdb_stderr
);
837 /* 3. The system-level buffer. */
838 serial_drain_output (gdb_stdout_serial
);
839 serial_un_fdopen (gdb_stdout_serial
);
841 annotate_error_begin ();
843 /* Don't use *_filtered; we don't want to prompt the user to continue. */
845 fprintf_unfiltered (gdb_stderr
, quit_pre_print
);
848 /* No steenking SIGINT will ever be coming our way when the
849 program is resumed. Don't lie. */
850 fprintf_unfiltered (gdb_stderr
, "Quit\n");
853 /* If there is no terminal switching for this target, then we can't
854 possibly get screwed by the lack of job control. */
855 || current_target
.to_terminal_ours
== NULL
)
856 fprintf_unfiltered (gdb_stderr
, "Quit\n");
858 fprintf_unfiltered (gdb_stderr
,
859 "Quit (expect signal SIGINT when the program is resumed)\n");
861 throw_exception (RETURN_QUIT
);
864 /* Control C comes here */
866 request_quit (int signo
)
869 /* Restore the signal handler. Harmless with BSD-style signals, needed
870 for System V-style signals. So just always do it, rather than worrying
871 about USG defines and stuff like that. */
872 signal (signo
, request_quit
);
882 /* Memory management stuff (malloc friends). */
884 #if !defined (USE_MMALLOC)
886 /* NOTE: These must use PTR so that their definition matches the
887 declaration found in "mmalloc.h". */
890 mmalloc (void *md
, size_t size
)
892 return malloc (size
); /* NOTE: GDB's only call to malloc() */
896 mrealloc (void *md
, void *ptr
, size_t size
)
898 if (ptr
== 0) /* Guard against old realloc's */
899 return mmalloc (md
, size
);
901 return realloc (ptr
, size
); /* NOTE: GDB's only call to ralloc() */
905 mcalloc (void *md
, size_t number
, size_t size
)
907 return calloc (number
, size
); /* NOTE: GDB's only call to calloc() */
911 mfree (void *md
, void *ptr
)
913 free (ptr
); /* NOTE: GDB's only call to free() */
916 #endif /* USE_MMALLOC */
918 #if !defined (USE_MMALLOC) || defined (NO_MMCHECK)
921 init_malloc (void *md
)
925 #else /* Have mmalloc and want corruption checking */
930 fprintf_unfiltered (gdb_stderr
, "Memory corruption\n");
931 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
934 /* Attempt to install hooks in mmalloc/mrealloc/mfree for the heap specified
935 by MD, to detect memory corruption. Note that MD may be NULL to specify
936 the default heap that grows via sbrk.
938 Note that for freshly created regions, we must call mmcheckf prior to any
939 mallocs in the region. Otherwise, any region which was allocated prior to
940 installing the checking hooks, which is later reallocated or freed, will
941 fail the checks! The mmcheck function only allows initial hooks to be
942 installed before the first mmalloc. However, anytime after we have called
943 mmcheck the first time to install the checking hooks, we can call it again
944 to update the function pointer to the memory corruption handler.
946 Returns zero on failure, non-zero on success. */
948 #ifndef MMCHECK_FORCE
949 #define MMCHECK_FORCE 0
953 init_malloc (void *md
)
955 if (!mmcheckf (md
, malloc_botch
, MMCHECK_FORCE
))
957 /* Don't use warning(), which relies on current_target being set
958 to something other than dummy_target, until after
959 initialize_all_files(). */
962 (gdb_stderr
, "warning: failed to install memory consistency checks; ");
964 (gdb_stderr
, "configuration should define NO_MMCHECK or MMCHECK_FORCE\n");
970 #endif /* Have mmalloc and want corruption checking */
972 /* Called when a memory allocation fails, with the number of bytes of
973 memory requested in SIZE. */
980 internal_error (__FILE__
, __LINE__
,
981 "virtual memory exhausted: can't allocate %ld bytes.", size
);
985 internal_error (__FILE__
, __LINE__
,
986 "virtual memory exhausted.");
990 /* The xmmalloc() family of memory management routines.
992 These are are like the mmalloc() family except that they implement
993 consistent semantics and guard against typical memory management
994 problems: if a malloc fails, an internal error is thrown; if
995 free(NULL) is called, it is ignored; if *alloc(0) is called, NULL
998 All these routines are implemented using the mmalloc() family. */
1001 xmmalloc (void *md
, size_t size
)
1011 val
= mmalloc (md
, size
);
1019 xmrealloc (void *md
, void *ptr
, size_t size
)
1033 val
= mrealloc (md
, ptr
, size
);
1037 val
= mmalloc (md
, size
);
1048 xmcalloc (void *md
, size_t number
, size_t size
)
1051 if (number
== 0 || size
== 0)
1055 mem
= mcalloc (md
, number
, size
);
1057 nomem (number
* size
);
1063 xmfree (void *md
, void *ptr
)
1069 /* The xmalloc() (libiberty.h) family of memory management routines.
1071 These are like the ISO-C malloc() family except that they implement
1072 consistent semantics and guard against typical memory management
1073 problems. See xmmalloc() above for further information.
1075 All these routines are wrappers to the xmmalloc() family. */
1077 /* NOTE: These are declared using PTR to ensure consistency with
1078 "libiberty.h". xfree() is GDB local. */
1081 xmalloc (size_t size
)
1083 return xmmalloc (NULL
, size
);
1087 xrealloc (PTR ptr
, size_t size
)
1089 return xmrealloc (NULL
, ptr
, size
);
1093 xcalloc (size_t number
, size_t size
)
1095 return xmcalloc (NULL
, number
, size
);
1105 /* Like asprintf/vasprintf but get an internal_error if the call
1109 xasprintf (char **ret
, const char *format
, ...)
1112 va_start (args
, format
);
1113 xvasprintf (ret
, format
, args
);
1118 xvasprintf (char **ret
, const char *format
, va_list ap
)
1120 int status
= vasprintf (ret
, format
, ap
);
1121 /* NULL could be returned due to a memory allocation problem; a
1122 badly format string; or something else. */
1124 internal_error (__FILE__
, __LINE__
,
1125 "vasprintf returned NULL buffer (errno %d)",
1127 /* A negative status with a non-NULL buffer shouldn't never
1128 happen. But to be sure. */
1130 internal_error (__FILE__
, __LINE__
,
1131 "vasprintf call failed (errno %d)",
1136 /* My replacement for the read system call.
1137 Used like `read' but keeps going if `read' returns too soon. */
1140 myread (int desc
, char *addr
, int len
)
1147 val
= read (desc
, addr
, len
);
1151 return orglen
- len
;
1158 /* Make a copy of the string at PTR with SIZE characters
1159 (and add a null character at the end in the copy).
1160 Uses malloc to get the space. Returns the address of the copy. */
1163 savestring (const char *ptr
, size_t size
)
1165 register char *p
= (char *) xmalloc (size
+ 1);
1166 memcpy (p
, ptr
, size
);
1172 msavestring (void *md
, const char *ptr
, size_t size
)
1174 register char *p
= (char *) xmmalloc (md
, size
+ 1);
1175 memcpy (p
, ptr
, size
);
1181 mstrsave (void *md
, const char *ptr
)
1183 return (msavestring (md
, ptr
, strlen (ptr
)));
1187 print_spaces (register int n
, register struct ui_file
*file
)
1189 fputs_unfiltered (n_spaces (n
), file
);
1192 /* Print a host address. */
1195 gdb_print_host_address (void *addr
, struct ui_file
*stream
)
1198 /* We could use the %p conversion specifier to fprintf if we had any
1199 way of knowing whether this host supports it. But the following
1200 should work on the Alpha and on 32 bit machines. */
1202 fprintf_filtered (stream
, "0x%lx", (unsigned long) addr
);
1205 /* Ask user a y-or-n question and return 1 iff answer is yes.
1206 Takes three args which are given to printf to print the question.
1207 The first, a control string, should end in "? ".
1208 It should not say how to answer, because we do that. */
1212 query (const char *ctlstr
,...)
1215 register int answer
;
1219 va_start (args
, ctlstr
);
1223 return query_hook (ctlstr
, args
);
1226 /* Automatically answer "yes" if input is not from a terminal. */
1227 if (!input_from_terminal_p ())
1232 wrap_here (""); /* Flush any buffered output */
1233 gdb_flush (gdb_stdout
);
1235 if (annotation_level
> 1)
1236 printf_filtered ("\n\032\032pre-query\n");
1238 vfprintf_filtered (gdb_stdout
, ctlstr
, args
);
1239 printf_filtered ("(y or n) ");
1241 if (annotation_level
> 1)
1242 printf_filtered ("\n\032\032query\n");
1245 gdb_flush (gdb_stdout
);
1247 answer
= fgetc (stdin
);
1248 clearerr (stdin
); /* in case of C-d */
1249 if (answer
== EOF
) /* C-d */
1254 /* Eat rest of input line, to EOF or newline */
1258 ans2
= fgetc (stdin
);
1261 while (ans2
!= EOF
&& ans2
!= '\n' && ans2
!= '\r');
1275 printf_filtered ("Please answer y or n.\n");
1278 if (annotation_level
> 1)
1279 printf_filtered ("\n\032\032post-query\n");
1284 /* Parse a C escape sequence. STRING_PTR points to a variable
1285 containing a pointer to the string to parse. That pointer
1286 should point to the character after the \. That pointer
1287 is updated past the characters we use. The value of the
1288 escape sequence is returned.
1290 A negative value means the sequence \ newline was seen,
1291 which is supposed to be equivalent to nothing at all.
1293 If \ is followed by a null character, we return a negative
1294 value and leave the string pointer pointing at the null character.
1296 If \ is followed by 000, we return 0 and leave the string pointer
1297 after the zeros. A value of 0 does not mean end of string. */
1300 parse_escape (char **string_ptr
)
1302 register int c
= *(*string_ptr
)++;
1306 return 007; /* Bell (alert) char */
1309 case 'e': /* Escape character */
1327 c
= *(*string_ptr
)++;
1329 c
= parse_escape (string_ptr
);
1332 return (c
& 0200) | (c
& 037);
1343 register int i
= c
- '0';
1344 register int count
= 0;
1347 if ((c
= *(*string_ptr
)++) >= '0' && c
<= '7')
1365 /* Print the character C on STREAM as part of the contents of a literal
1366 string whose delimiter is QUOTER. Note that this routine should only
1367 be call for printing things which are independent of the language
1368 of the program being debugged. */
1371 printchar (int c
, void (*do_fputs
) (const char *, struct ui_file
*),
1372 void (*do_fprintf
) (struct ui_file
*, const char *, ...),
1373 struct ui_file
*stream
, int quoter
)
1376 c
&= 0xFF; /* Avoid sign bit follies */
1378 if (c
< 0x20 || /* Low control chars */
1379 (c
>= 0x7F && c
< 0xA0) || /* DEL, High controls */
1380 (sevenbit_strings
&& c
>= 0x80))
1381 { /* high order bit set */
1385 do_fputs ("\\n", stream
);
1388 do_fputs ("\\b", stream
);
1391 do_fputs ("\\t", stream
);
1394 do_fputs ("\\f", stream
);
1397 do_fputs ("\\r", stream
);
1400 do_fputs ("\\e", stream
);
1403 do_fputs ("\\a", stream
);
1406 do_fprintf (stream
, "\\%.3o", (unsigned int) c
);
1412 if (c
== '\\' || c
== quoter
)
1413 do_fputs ("\\", stream
);
1414 do_fprintf (stream
, "%c", c
);
1418 /* Print the character C on STREAM as part of the contents of a
1419 literal string whose delimiter is QUOTER. Note that these routines
1420 should only be call for printing things which are independent of
1421 the language of the program being debugged. */
1424 fputstr_filtered (const char *str
, int quoter
, struct ui_file
*stream
)
1427 printchar (*str
++, fputs_filtered
, fprintf_filtered
, stream
, quoter
);
1431 fputstr_unfiltered (const char *str
, int quoter
, struct ui_file
*stream
)
1434 printchar (*str
++, fputs_unfiltered
, fprintf_unfiltered
, stream
, quoter
);
1438 fputstrn_unfiltered (const char *str
, int n
, int quoter
, struct ui_file
*stream
)
1441 for (i
= 0; i
< n
; i
++)
1442 printchar (str
[i
], fputs_unfiltered
, fprintf_unfiltered
, stream
, quoter
);
1447 /* Number of lines per page or UINT_MAX if paging is disabled. */
1448 static unsigned int lines_per_page
;
1449 /* Number of chars per line or UINT_MAX if line folding is disabled. */
1450 static unsigned int chars_per_line
;
1451 /* Current count of lines printed on this page, chars on this line. */
1452 static unsigned int lines_printed
, chars_printed
;
1454 /* Buffer and start column of buffered text, for doing smarter word-
1455 wrapping. When someone calls wrap_here(), we start buffering output
1456 that comes through fputs_filtered(). If we see a newline, we just
1457 spit it out and forget about the wrap_here(). If we see another
1458 wrap_here(), we spit it out and remember the newer one. If we see
1459 the end of the line, we spit out a newline, the indent, and then
1460 the buffered output. */
1462 /* Malloc'd buffer with chars_per_line+2 bytes. Contains characters which
1463 are waiting to be output (they have already been counted in chars_printed).
1464 When wrap_buffer[0] is null, the buffer is empty. */
1465 static char *wrap_buffer
;
1467 /* Pointer in wrap_buffer to the next character to fill. */
1468 static char *wrap_pointer
;
1470 /* String to indent by if the wrap occurs. Must not be NULL if wrap_column
1472 static char *wrap_indent
;
1474 /* Column number on the screen where wrap_buffer begins, or 0 if wrapping
1475 is not in effect. */
1476 static int wrap_column
;
1479 /* Inialize the lines and chars per page */
1481 init_page_info (void)
1484 if (!tui_get_command_dimension (&chars_per_line
, &lines_per_page
))
1487 /* These defaults will be used if we are unable to get the correct
1488 values from termcap. */
1489 #if defined(__GO32__)
1490 lines_per_page
= ScreenRows ();
1491 chars_per_line
= ScreenCols ();
1493 lines_per_page
= 24;
1494 chars_per_line
= 80;
1496 #if !defined (_WIN32)
1497 /* No termcap under MPW, although might be cool to do something
1498 by looking at worksheet or console window sizes. */
1499 /* Initialize the screen height and width from termcap. */
1501 char *termtype
= getenv ("TERM");
1503 /* Positive means success, nonpositive means failure. */
1506 /* 2048 is large enough for all known terminals, according to the
1507 GNU termcap manual. */
1508 char term_buffer
[2048];
1512 status
= tgetent (term_buffer
, termtype
);
1516 int running_in_emacs
= getenv ("EMACS") != NULL
;
1518 val
= tgetnum ("li");
1519 if (val
>= 0 && !running_in_emacs
)
1520 lines_per_page
= val
;
1522 /* The number of lines per page is not mentioned
1523 in the terminal description. This probably means
1524 that paging is not useful (e.g. emacs shell window),
1525 so disable paging. */
1526 lines_per_page
= UINT_MAX
;
1528 val
= tgetnum ("co");
1530 chars_per_line
= val
;
1536 #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER)
1538 /* If there is a better way to determine the window size, use it. */
1539 SIGWINCH_HANDLER (SIGWINCH
);
1542 /* If the output is not a terminal, don't paginate it. */
1543 if (!ui_file_isatty (gdb_stdout
))
1544 lines_per_page
= UINT_MAX
;
1545 } /* the command_line_version */
1552 if (chars_per_line
== 0)
1557 wrap_buffer
= (char *) xmalloc (chars_per_line
+ 2);
1558 wrap_buffer
[0] = '\0';
1561 wrap_buffer
= (char *) xrealloc (wrap_buffer
, chars_per_line
+ 2);
1562 wrap_pointer
= wrap_buffer
; /* Start it at the beginning */
1567 set_width_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
1572 /* Wait, so the user can read what's on the screen. Prompt the user
1573 to continue by pressing RETURN. */
1576 prompt_for_continue (void)
1579 char cont_prompt
[120];
1581 if (annotation_level
> 1)
1582 printf_unfiltered ("\n\032\032pre-prompt-for-continue\n");
1584 strcpy (cont_prompt
,
1585 "---Type <return> to continue, or q <return> to quit---");
1586 if (annotation_level
> 1)
1587 strcat (cont_prompt
, "\n\032\032prompt-for-continue\n");
1589 /* We must do this *before* we call gdb_readline, else it will eventually
1590 call us -- thinking that we're trying to print beyond the end of the
1592 reinitialize_more_filter ();
1595 /* On a real operating system, the user can quit with SIGINT.
1598 'q' is provided on all systems so users don't have to change habits
1599 from system to system, and because telling them what to do in
1600 the prompt is more user-friendly than expecting them to think of
1602 /* Call readline, not gdb_readline, because GO32 readline handles control-C
1603 whereas control-C to gdb_readline will cause the user to get dumped
1605 ignore
= readline (cont_prompt
);
1607 if (annotation_level
> 1)
1608 printf_unfiltered ("\n\032\032post-prompt-for-continue\n");
1613 while (*p
== ' ' || *p
== '\t')
1618 request_quit (SIGINT
);
1620 async_request_quit (0);
1626 /* Now we have to do this again, so that GDB will know that it doesn't
1627 need to save the ---Type <return>--- line at the top of the screen. */
1628 reinitialize_more_filter ();
1630 dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */
1633 /* Reinitialize filter; ie. tell it to reset to original values. */
1636 reinitialize_more_filter (void)
1642 /* Indicate that if the next sequence of characters overflows the line,
1643 a newline should be inserted here rather than when it hits the end.
1644 If INDENT is non-null, it is a string to be printed to indent the
1645 wrapped part on the next line. INDENT must remain accessible until
1646 the next call to wrap_here() or until a newline is printed through
1649 If the line is already overfull, we immediately print a newline and
1650 the indentation, and disable further wrapping.
1652 If we don't know the width of lines, but we know the page height,
1653 we must not wrap words, but should still keep track of newlines
1654 that were explicitly printed.
1656 INDENT should not contain tabs, as that will mess up the char count
1657 on the next line. FIXME.
1659 This routine is guaranteed to force out any output which has been
1660 squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be
1661 used to force out output from the wrap_buffer. */
1664 wrap_here (char *indent
)
1666 /* This should have been allocated, but be paranoid anyway. */
1668 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
1672 *wrap_pointer
= '\0';
1673 fputs_unfiltered (wrap_buffer
, gdb_stdout
);
1675 wrap_pointer
= wrap_buffer
;
1676 wrap_buffer
[0] = '\0';
1677 if (chars_per_line
== UINT_MAX
) /* No line overflow checking */
1681 else if (chars_printed
>= chars_per_line
)
1683 puts_filtered ("\n");
1685 puts_filtered (indent
);
1690 wrap_column
= chars_printed
;
1694 wrap_indent
= indent
;
1698 /* Ensure that whatever gets printed next, using the filtered output
1699 commands, starts at the beginning of the line. I.E. if there is
1700 any pending output for the current line, flush it and start a new
1701 line. Otherwise do nothing. */
1706 if (chars_printed
> 0)
1708 puts_filtered ("\n");
1713 /* Like fputs but if FILTER is true, pause after every screenful.
1715 Regardless of FILTER can wrap at points other than the final
1716 character of a line.
1718 Unlike fputs, fputs_maybe_filtered does not return a value.
1719 It is OK for LINEBUFFER to be NULL, in which case just don't print
1722 Note that a longjmp to top level may occur in this routine (only if
1723 FILTER is true) (since prompt_for_continue may do so) so this
1724 routine should not be called when cleanups are not in place. */
1727 fputs_maybe_filtered (const char *linebuffer
, struct ui_file
*stream
,
1730 const char *lineptr
;
1732 if (linebuffer
== 0)
1735 /* Don't do any filtering if it is disabled. */
1736 if ((stream
!= gdb_stdout
) || !pagination_enabled
1737 || (lines_per_page
== UINT_MAX
&& chars_per_line
== UINT_MAX
))
1739 fputs_unfiltered (linebuffer
, stream
);
1743 /* Go through and output each character. Show line extension
1744 when this is necessary; prompt user for new page when this is
1747 lineptr
= linebuffer
;
1750 /* Possible new page. */
1752 (lines_printed
>= lines_per_page
- 1))
1753 prompt_for_continue ();
1755 while (*lineptr
&& *lineptr
!= '\n')
1757 /* Print a single line. */
1758 if (*lineptr
== '\t')
1761 *wrap_pointer
++ = '\t';
1763 fputc_unfiltered ('\t', stream
);
1764 /* Shifting right by 3 produces the number of tab stops
1765 we have already passed, and then adding one and
1766 shifting left 3 advances to the next tab stop. */
1767 chars_printed
= ((chars_printed
>> 3) + 1) << 3;
1773 *wrap_pointer
++ = *lineptr
;
1775 fputc_unfiltered (*lineptr
, stream
);
1780 if (chars_printed
>= chars_per_line
)
1782 unsigned int save_chars
= chars_printed
;
1786 /* If we aren't actually wrapping, don't output newline --
1787 if chars_per_line is right, we probably just overflowed
1788 anyway; if it's wrong, let us keep going. */
1790 fputc_unfiltered ('\n', stream
);
1792 /* Possible new page. */
1793 if (lines_printed
>= lines_per_page
- 1)
1794 prompt_for_continue ();
1796 /* Now output indentation and wrapped string */
1799 fputs_unfiltered (wrap_indent
, stream
);
1800 *wrap_pointer
= '\0'; /* Null-terminate saved stuff */
1801 fputs_unfiltered (wrap_buffer
, stream
); /* and eject it */
1802 /* FIXME, this strlen is what prevents wrap_indent from
1803 containing tabs. However, if we recurse to print it
1804 and count its chars, we risk trouble if wrap_indent is
1805 longer than (the user settable) chars_per_line.
1806 Note also that this can set chars_printed > chars_per_line
1807 if we are printing a long string. */
1808 chars_printed
= strlen (wrap_indent
)
1809 + (save_chars
- wrap_column
);
1810 wrap_pointer
= wrap_buffer
; /* Reset buffer */
1811 wrap_buffer
[0] = '\0';
1812 wrap_column
= 0; /* And disable fancy wrap */
1817 if (*lineptr
== '\n')
1820 wrap_here ((char *) 0); /* Spit out chars, cancel further wraps */
1822 fputc_unfiltered ('\n', stream
);
1829 fputs_filtered (const char *linebuffer
, struct ui_file
*stream
)
1831 fputs_maybe_filtered (linebuffer
, stream
, 1);
1835 putchar_unfiltered (int c
)
1838 ui_file_write (gdb_stdout
, &buf
, 1);
1842 /* Write character C to gdb_stdout using GDB's paging mechanism and return C.
1843 May return nonlocally. */
1846 putchar_filtered (int c
)
1848 return fputc_filtered (c
, gdb_stdout
);
1852 fputc_unfiltered (int c
, struct ui_file
*stream
)
1855 ui_file_write (stream
, &buf
, 1);
1860 fputc_filtered (int c
, struct ui_file
*stream
)
1866 fputs_filtered (buf
, stream
);
1870 /* puts_debug is like fputs_unfiltered, except it prints special
1871 characters in printable fashion. */
1874 puts_debug (char *prefix
, char *string
, char *suffix
)
1878 /* Print prefix and suffix after each line. */
1879 static int new_line
= 1;
1880 static int return_p
= 0;
1881 static char *prev_prefix
= "";
1882 static char *prev_suffix
= "";
1884 if (*string
== '\n')
1887 /* If the prefix is changing, print the previous suffix, a new line,
1888 and the new prefix. */
1889 if ((return_p
|| (strcmp (prev_prefix
, prefix
) != 0)) && !new_line
)
1891 fputs_unfiltered (prev_suffix
, gdb_stdlog
);
1892 fputs_unfiltered ("\n", gdb_stdlog
);
1893 fputs_unfiltered (prefix
, gdb_stdlog
);
1896 /* Print prefix if we printed a newline during the previous call. */
1900 fputs_unfiltered (prefix
, gdb_stdlog
);
1903 prev_prefix
= prefix
;
1904 prev_suffix
= suffix
;
1906 /* Output characters in a printable format. */
1907 while ((ch
= *string
++) != '\0')
1913 fputc_unfiltered (ch
, gdb_stdlog
);
1916 fprintf_unfiltered (gdb_stdlog
, "\\x%02x", ch
& 0xff);
1920 fputs_unfiltered ("\\\\", gdb_stdlog
);
1923 fputs_unfiltered ("\\b", gdb_stdlog
);
1926 fputs_unfiltered ("\\f", gdb_stdlog
);
1930 fputs_unfiltered ("\\n", gdb_stdlog
);
1933 fputs_unfiltered ("\\r", gdb_stdlog
);
1936 fputs_unfiltered ("\\t", gdb_stdlog
);
1939 fputs_unfiltered ("\\v", gdb_stdlog
);
1943 return_p
= ch
== '\r';
1946 /* Print suffix if we printed a newline. */
1949 fputs_unfiltered (suffix
, gdb_stdlog
);
1950 fputs_unfiltered ("\n", gdb_stdlog
);
1955 /* Print a variable number of ARGS using format FORMAT. If this
1956 information is going to put the amount written (since the last call
1957 to REINITIALIZE_MORE_FILTER or the last page break) over the page size,
1958 call prompt_for_continue to get the users permision to continue.
1960 Unlike fprintf, this function does not return a value.
1962 We implement three variants, vfprintf (takes a vararg list and stream),
1963 fprintf (takes a stream to write on), and printf (the usual).
1965 Note also that a longjmp to top level may occur in this routine
1966 (since prompt_for_continue may do so) so this routine should not be
1967 called when cleanups are not in place. */
1970 vfprintf_maybe_filtered (struct ui_file
*stream
, const char *format
,
1971 va_list args
, int filter
)
1974 struct cleanup
*old_cleanups
;
1976 xvasprintf (&linebuffer
, format
, args
);
1977 old_cleanups
= make_cleanup (xfree
, linebuffer
);
1978 fputs_maybe_filtered (linebuffer
, stream
, filter
);
1979 do_cleanups (old_cleanups
);
1984 vfprintf_filtered (struct ui_file
*stream
, const char *format
, va_list args
)
1986 vfprintf_maybe_filtered (stream
, format
, args
, 1);
1990 vfprintf_unfiltered (struct ui_file
*stream
, const char *format
, va_list args
)
1993 struct cleanup
*old_cleanups
;
1995 xvasprintf (&linebuffer
, format
, args
);
1996 old_cleanups
= make_cleanup (xfree
, linebuffer
);
1997 fputs_unfiltered (linebuffer
, stream
);
1998 do_cleanups (old_cleanups
);
2002 vprintf_filtered (const char *format
, va_list args
)
2004 vfprintf_maybe_filtered (gdb_stdout
, format
, args
, 1);
2008 vprintf_unfiltered (const char *format
, va_list args
)
2010 vfprintf_unfiltered (gdb_stdout
, format
, args
);
2014 fprintf_filtered (struct ui_file
* stream
, const char *format
,...)
2017 va_start (args
, format
);
2018 vfprintf_filtered (stream
, format
, args
);
2023 fprintf_unfiltered (struct ui_file
* stream
, const char *format
,...)
2026 va_start (args
, format
);
2027 vfprintf_unfiltered (stream
, format
, args
);
2031 /* Like fprintf_filtered, but prints its result indented.
2032 Called as fprintfi_filtered (spaces, stream, format, ...); */
2035 fprintfi_filtered (int spaces
, struct ui_file
* stream
, const char *format
,...)
2038 va_start (args
, format
);
2039 print_spaces_filtered (spaces
, stream
);
2041 vfprintf_filtered (stream
, format
, args
);
2047 printf_filtered (const char *format
,...)
2050 va_start (args
, format
);
2051 vfprintf_filtered (gdb_stdout
, format
, args
);
2057 printf_unfiltered (const char *format
,...)
2060 va_start (args
, format
);
2061 vfprintf_unfiltered (gdb_stdout
, format
, args
);
2065 /* Like printf_filtered, but prints it's result indented.
2066 Called as printfi_filtered (spaces, format, ...); */
2069 printfi_filtered (int spaces
, const char *format
,...)
2072 va_start (args
, format
);
2073 print_spaces_filtered (spaces
, gdb_stdout
);
2074 vfprintf_filtered (gdb_stdout
, format
, args
);
2078 /* Easy -- but watch out!
2080 This routine is *not* a replacement for puts()! puts() appends a newline.
2081 This one doesn't, and had better not! */
2084 puts_filtered (const char *string
)
2086 fputs_filtered (string
, gdb_stdout
);
2090 puts_unfiltered (const char *string
)
2092 fputs_unfiltered (string
, gdb_stdout
);
2095 /* Return a pointer to N spaces and a null. The pointer is good
2096 until the next call to here. */
2101 static char *spaces
= 0;
2102 static int max_spaces
= -1;
2108 spaces
= (char *) xmalloc (n
+ 1);
2109 for (t
= spaces
+ n
; t
!= spaces
;)
2115 return spaces
+ max_spaces
- n
;
2118 /* Print N spaces. */
2120 print_spaces_filtered (int n
, struct ui_file
*stream
)
2122 fputs_filtered (n_spaces (n
), stream
);
2125 /* C++ demangler stuff. */
2127 /* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language
2128 LANG, using demangling args ARG_MODE, and print it filtered to STREAM.
2129 If the name is not mangled, or the language for the name is unknown, or
2130 demangling is off, the name is printed in its "raw" form. */
2133 fprintf_symbol_filtered (struct ui_file
*stream
, char *name
, enum language lang
,
2140 /* If user wants to see raw output, no problem. */
2143 fputs_filtered (name
, stream
);
2149 case language_cplus
:
2150 demangled
= cplus_demangle (name
, arg_mode
);
2153 demangled
= cplus_demangle (name
, arg_mode
| DMGL_JAVA
);
2155 case language_chill
:
2156 demangled
= chill_demangle (name
);
2162 fputs_filtered (demangled
? demangled
: name
, stream
);
2163 if (demangled
!= NULL
)
2171 /* Do a strcmp() type operation on STRING1 and STRING2, ignoring any
2172 differences in whitespace. Returns 0 if they match, non-zero if they
2173 don't (slightly different than strcmp()'s range of return values).
2175 As an extra hack, string1=="FOO(ARGS)" matches string2=="FOO".
2176 This "feature" is useful when searching for matching C++ function names
2177 (such as if the user types 'break FOO', where FOO is a mangled C++
2181 strcmp_iw (const char *string1
, const char *string2
)
2183 while ((*string1
!= '\0') && (*string2
!= '\0'))
2185 while (isspace (*string1
))
2189 while (isspace (*string2
))
2193 if (*string1
!= *string2
)
2197 if (*string1
!= '\0')
2203 return (*string1
!= '\0' && *string1
!= '(') || (*string2
!= '\0');
2209 ** Answer whether string_to_compare is a full or partial match to
2210 ** template_string. The partial match must be in sequence starting
2214 subset_compare (char *string_to_compare
, char *template_string
)
2217 if (template_string
!= (char *) NULL
&& string_to_compare
!= (char *) NULL
&&
2218 strlen (string_to_compare
) <= strlen (template_string
))
2219 match
= (strncmp (template_string
,
2221 strlen (string_to_compare
)) == 0);
2228 static void pagination_on_command (char *arg
, int from_tty
);
2230 pagination_on_command (char *arg
, int from_tty
)
2232 pagination_enabled
= 1;
2235 static void pagination_on_command (char *arg
, int from_tty
);
2237 pagination_off_command (char *arg
, int from_tty
)
2239 pagination_enabled
= 0;
2244 initialize_utils (void)
2246 struct cmd_list_element
*c
;
2248 c
= add_set_cmd ("width", class_support
, var_uinteger
,
2249 (char *) &chars_per_line
,
2250 "Set number of characters gdb thinks are in a line.",
2252 add_show_from_set (c
, &showlist
);
2253 set_cmd_sfunc (c
, set_width_command
);
2256 (add_set_cmd ("height", class_support
,
2257 var_uinteger
, (char *) &lines_per_page
,
2258 "Set number of lines gdb thinks are in a page.", &setlist
),
2263 /* If the output is not a terminal, don't paginate it. */
2264 if (!ui_file_isatty (gdb_stdout
))
2265 lines_per_page
= UINT_MAX
;
2267 set_width_command ((char *) NULL
, 0, c
);
2270 (add_set_cmd ("demangle", class_support
, var_boolean
,
2272 "Set demangling of encoded C++ names when displaying symbols.",
2277 (add_set_cmd ("pagination", class_support
,
2278 var_boolean
, (char *) &pagination_enabled
,
2279 "Set state of pagination.", &setlist
),
2284 add_com ("am", class_support
, pagination_on_command
,
2285 "Enable pagination");
2286 add_com ("sm", class_support
, pagination_off_command
,
2287 "Disable pagination");
2291 (add_set_cmd ("sevenbit-strings", class_support
, var_boolean
,
2292 (char *) &sevenbit_strings
,
2293 "Set printing of 8-bit characters in strings as \\nnn.",
2298 (add_set_cmd ("asm-demangle", class_support
, var_boolean
,
2299 (char *) &asm_demangle
,
2300 "Set demangling of C++ names in disassembly listings.",
2305 /* Machine specific function to handle SIGWINCH signal. */
2307 #ifdef SIGWINCH_HANDLER_BODY
2308 SIGWINCH_HANDLER_BODY
2311 /* print routines to handle variable size regs, etc. */
2313 /* temporary storage using circular buffer */
2319 static char buf
[NUMCELLS
][CELLSIZE
];
2320 static int cell
= 0;
2321 if (++cell
>= NUMCELLS
)
2329 return (TARGET_ADDR_BIT
/ 8 * 2);
2333 paddr (CORE_ADDR addr
)
2335 return phex (addr
, TARGET_ADDR_BIT
/ 8);
2339 paddr_nz (CORE_ADDR addr
)
2341 return phex_nz (addr
, TARGET_ADDR_BIT
/ 8);
2345 decimal2str (char *paddr_str
, char *sign
, ULONGEST addr
)
2347 /* steal code from valprint.c:print_decimal(). Should this worry
2348 about the real size of addr as the above does? */
2349 unsigned long temp
[3];
2353 temp
[i
] = addr
% (1000 * 1000 * 1000);
2354 addr
/= (1000 * 1000 * 1000);
2357 while (addr
!= 0 && i
< (sizeof (temp
) / sizeof (temp
[0])));
2361 sprintf (paddr_str
, "%s%lu",
2365 sprintf (paddr_str
, "%s%lu%09lu",
2366 sign
, temp
[1], temp
[0]);
2369 sprintf (paddr_str
, "%s%lu%09lu%09lu",
2370 sign
, temp
[2], temp
[1], temp
[0]);
2373 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
2378 paddr_u (CORE_ADDR addr
)
2380 char *paddr_str
= get_cell ();
2381 decimal2str (paddr_str
, "", addr
);
2386 paddr_d (LONGEST addr
)
2388 char *paddr_str
= get_cell ();
2390 decimal2str (paddr_str
, "-", -addr
);
2392 decimal2str (paddr_str
, "", addr
);
2396 /* eliminate warning from compiler on 32-bit systems */
2397 static int thirty_two
= 32;
2400 phex (ULONGEST l
, int sizeof_l
)
2407 sprintf (str
, "%08lx%08lx",
2408 (unsigned long) (l
>> thirty_two
),
2409 (unsigned long) (l
& 0xffffffff));
2413 sprintf (str
, "%08lx", (unsigned long) l
);
2417 sprintf (str
, "%04x", (unsigned short) (l
& 0xffff));
2420 str
= phex (l
, sizeof (l
));
2427 phex_nz (ULONGEST l
, int sizeof_l
)
2434 unsigned long high
= (unsigned long) (l
>> thirty_two
);
2437 sprintf (str
, "%lx", (unsigned long) (l
& 0xffffffff));
2439 sprintf (str
, "%lx%08lx",
2440 high
, (unsigned long) (l
& 0xffffffff));
2445 sprintf (str
, "%lx", (unsigned long) l
);
2449 sprintf (str
, "%x", (unsigned short) (l
& 0xffff));
2452 str
= phex_nz (l
, sizeof (l
));
2459 /* Convert to / from the hosts pointer to GDB's internal CORE_ADDR
2460 using the target's conversion routines. */
2462 host_pointer_to_address (void *ptr
)
2464 if (sizeof (ptr
) != TYPE_LENGTH (builtin_type_void_data_ptr
))
2465 internal_error (__FILE__
, __LINE__
,
2466 "core_addr_to_void_ptr: bad cast");
2467 return POINTER_TO_ADDRESS (builtin_type_void_data_ptr
, &ptr
);
2471 address_to_host_pointer (CORE_ADDR addr
)
2474 if (sizeof (ptr
) != TYPE_LENGTH (builtin_type_void_data_ptr
))
2475 internal_error (__FILE__
, __LINE__
,
2476 "core_addr_to_void_ptr: bad cast");
2477 ADDRESS_TO_POINTER (builtin_type_void_data_ptr
, &ptr
, addr
);
2481 /* Convert a CORE_ADDR into a string. */
2483 core_addr_to_string (const CORE_ADDR addr
)
2485 char *str
= get_cell ();
2487 strcat (str
, phex (addr
, sizeof (addr
)));
2492 core_addr_to_string_nz (const CORE_ADDR addr
)
2494 char *str
= get_cell ();
2496 strcat (str
, phex_nz (addr
, sizeof (addr
)));
2500 /* Convert a string back into a CORE_ADDR. */
2502 string_to_core_addr (const char *my_string
)
2505 if (my_string
[0] == '0' && tolower (my_string
[1]) == 'x')
2507 /* Assume that it is in decimal. */
2509 for (i
= 2; my_string
[i
] != '\0'; i
++)
2511 if (isdigit (my_string
[i
]))
2512 addr
= (my_string
[i
] - '0') + (addr
* 16);
2513 else if (isxdigit (my_string
[i
]))
2514 addr
= (tolower (my_string
[i
]) - 'a' + 0xa) + (addr
* 16);
2516 internal_error (__FILE__
, __LINE__
, "invalid hex");
2521 /* Assume that it is in decimal. */
2523 for (i
= 0; my_string
[i
] != '\0'; i
++)
2525 if (isdigit (my_string
[i
]))
2526 addr
= (my_string
[i
] - '0') + (addr
* 10);
2528 internal_error (__FILE__
, __LINE__
, "invalid decimal");
2535 gdb_realpath (const char *filename
)
2537 #if defined(HAVE_REALPATH)
2538 # if defined (PATH_MAX)
2540 # define USE_REALPATH
2541 # elif defined (MAXPATHLEN)
2542 char buf
[MAXPATHLEN
];
2543 # define USE_REALPATH
2544 # elif defined (HAVE_UNISTD_H) && defined(HAVE_ALLOCA)
2545 char *buf
= alloca ((size_t)pathconf ("/", _PC_PATH_MAX
));
2546 # define USE_REALPATH
2548 #endif /* HAVE_REALPATH */
2550 #if defined(USE_REALPATH)
2551 char *rp
= realpath (filename
, buf
);
2552 return xstrdup (rp
? rp
: filename
);
2553 #elif defined(HAVE_CANONICALIZE_FILE_NAME)
2554 return canonicalize_file_name (filename
);
2556 return xstrdup (filename
);