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. */
24 #include "gdb_assert.h"
26 #include "gdb_string.h"
27 #include "event-top.h"
40 /* SunOS's curses.h has a '#define reg register' in it. Thank you Sun. */
51 #include "expression.h"
55 #include "inferior.h" /* for signed_pointer_to_address */
57 #include <readline/readline.h>
63 #ifndef MALLOC_INCOMPATIBLE
64 #ifdef NEED_DECLARATION_MALLOC
67 #ifdef NEED_DECLARATION_REALLOC
68 extern PTR
realloc ();
70 #ifdef NEED_DECLARATION_FREE
76 #define XMALLOC(TYPE) ((TYPE*) xmalloc (sizeof (TYPE)))
78 /* readline defines this. */
81 void (*error_begin_hook
) (void);
83 /* Holds the last error message issued by gdb */
85 static struct ui_file
*gdb_lasterr
;
87 /* Prototypes for local functions */
89 static void vfprintf_maybe_filtered (struct ui_file
*, const char *,
92 static void fputs_maybe_filtered (const char *, struct ui_file
*, int);
94 #if defined (USE_MMALLOC) && !defined (NO_MMCHECK)
95 static void malloc_botch (void);
98 static void prompt_for_continue (void);
100 static void set_width_command (char *, int, struct cmd_list_element
*);
102 static void set_width (void);
104 /* Chain of cleanup actions established with make_cleanup,
105 to be executed if an error happens. */
107 static struct cleanup
*cleanup_chain
; /* cleaned up after a failed command */
108 static struct cleanup
*final_cleanup_chain
; /* cleaned up when gdb exits */
109 static struct cleanup
*run_cleanup_chain
; /* cleaned up on each 'run' */
110 static struct cleanup
*exec_cleanup_chain
; /* cleaned up on each execution command */
111 /* cleaned up on each error from within an execution command */
112 static struct cleanup
*exec_error_cleanup_chain
;
114 /* Pointer to what is left to do for an execution command after the
115 target stops. Used only in asynchronous mode, by targets that
116 support async execution. The finish and until commands use it. So
117 does the target extended-remote command. */
118 struct continuation
*cmd_continuation
;
119 struct continuation
*intermediate_continuation
;
121 /* Nonzero if we have job control. */
125 /* Nonzero means a quit has been requested. */
129 /* Nonzero means quit immediately if Control-C is typed now, rather
130 than waiting until QUIT is executed. Be careful in setting this;
131 code which executes with immediate_quit set has to be very careful
132 about being able to deal with being interrupted at any time. It is
133 almost always better to use QUIT; the only exception I can think of
134 is being able to quit out of a system call (using EINTR loses if
135 the SIGINT happens between the previous QUIT and the system call).
136 To immediately quit in the case in which a SIGINT happens between
137 the previous QUIT and setting immediate_quit (desirable anytime we
138 expect to block), call QUIT after setting immediate_quit. */
142 /* Nonzero means that encoded C++ names should be printed out in their
143 C++ form rather than raw. */
147 /* Nonzero means that encoded C++ names should be printed out in their
148 C++ form even in assembler language displays. If this is set, but
149 DEMANGLE is zero, names are printed raw, i.e. DEMANGLE controls. */
151 int asm_demangle
= 0;
153 /* Nonzero means that strings with character values >0x7F should be printed
154 as octal escapes. Zero means just print the value (e.g. it's an
155 international character, and the terminal or window can cope.) */
157 int sevenbit_strings
= 0;
159 /* String to be printed before error messages, if any. */
161 char *error_pre_print
;
163 /* String to be printed before quit messages, if any. */
165 char *quit_pre_print
;
167 /* String to be printed before warning messages, if any. */
169 char *warning_pre_print
= "\nwarning: ";
171 int pagination_enabled
= 1;
174 /* Add a new cleanup to the cleanup_chain,
175 and return the previous chain pointer
176 to be passed later to do_cleanups or discard_cleanups.
177 Args are FUNCTION to clean up with, and ARG to pass to it. */
180 make_cleanup (make_cleanup_ftype
*function
, void *arg
)
182 return make_my_cleanup (&cleanup_chain
, function
, arg
);
186 make_final_cleanup (make_cleanup_ftype
*function
, void *arg
)
188 return make_my_cleanup (&final_cleanup_chain
, function
, arg
);
192 make_run_cleanup (make_cleanup_ftype
*function
, void *arg
)
194 return make_my_cleanup (&run_cleanup_chain
, function
, arg
);
198 make_exec_cleanup (make_cleanup_ftype
*function
, void *arg
)
200 return make_my_cleanup (&exec_cleanup_chain
, function
, arg
);
204 make_exec_error_cleanup (make_cleanup_ftype
*function
, void *arg
)
206 return make_my_cleanup (&exec_error_cleanup_chain
, function
, arg
);
210 do_freeargv (void *arg
)
212 freeargv ((char **) arg
);
216 make_cleanup_freeargv (char **arg
)
218 return make_my_cleanup (&cleanup_chain
, do_freeargv
, arg
);
222 do_bfd_close_cleanup (void *arg
)
228 make_cleanup_bfd_close (bfd
*abfd
)
230 return make_cleanup (do_bfd_close_cleanup
, abfd
);
234 do_close_cleanup (void *arg
)
242 make_cleanup_close (int fd
)
244 int *saved_fd
= xmalloc (sizeof (fd
));
246 return make_cleanup (do_close_cleanup
, saved_fd
);
250 do_ui_file_delete (void *arg
)
252 ui_file_delete (arg
);
256 make_cleanup_ui_file_delete (struct ui_file
*arg
)
258 return make_my_cleanup (&cleanup_chain
, do_ui_file_delete
, arg
);
262 make_my_cleanup (struct cleanup
**pmy_chain
, make_cleanup_ftype
*function
,
265 register struct cleanup
*new
266 = (struct cleanup
*) xmalloc (sizeof (struct cleanup
));
267 register struct cleanup
*old_chain
= *pmy_chain
;
269 new->next
= *pmy_chain
;
270 new->function
= function
;
277 /* Discard cleanups and do the actions they describe
278 until we get back to the point OLD_CHAIN in the cleanup_chain. */
281 do_cleanups (register struct cleanup
*old_chain
)
283 do_my_cleanups (&cleanup_chain
, old_chain
);
287 do_final_cleanups (register struct cleanup
*old_chain
)
289 do_my_cleanups (&final_cleanup_chain
, old_chain
);
293 do_run_cleanups (register struct cleanup
*old_chain
)
295 do_my_cleanups (&run_cleanup_chain
, old_chain
);
299 do_exec_cleanups (register struct cleanup
*old_chain
)
301 do_my_cleanups (&exec_cleanup_chain
, old_chain
);
305 do_exec_error_cleanups (register struct cleanup
*old_chain
)
307 do_my_cleanups (&exec_error_cleanup_chain
, old_chain
);
311 do_my_cleanups (register struct cleanup
**pmy_chain
,
312 register struct cleanup
*old_chain
)
314 register struct cleanup
*ptr
;
315 while ((ptr
= *pmy_chain
) != old_chain
)
317 *pmy_chain
= ptr
->next
; /* Do this first incase recursion */
318 (*ptr
->function
) (ptr
->arg
);
323 /* Discard cleanups, not doing the actions they describe,
324 until we get back to the point OLD_CHAIN in the cleanup_chain. */
327 discard_cleanups (register struct cleanup
*old_chain
)
329 discard_my_cleanups (&cleanup_chain
, old_chain
);
333 discard_final_cleanups (register struct cleanup
*old_chain
)
335 discard_my_cleanups (&final_cleanup_chain
, old_chain
);
339 discard_exec_error_cleanups (register struct cleanup
*old_chain
)
341 discard_my_cleanups (&exec_error_cleanup_chain
, old_chain
);
345 discard_my_cleanups (register struct cleanup
**pmy_chain
,
346 register struct cleanup
*old_chain
)
348 register struct cleanup
*ptr
;
349 while ((ptr
= *pmy_chain
) != old_chain
)
351 *pmy_chain
= ptr
->next
;
356 /* Set the cleanup_chain to 0, and return the old cleanup chain. */
360 return save_my_cleanups (&cleanup_chain
);
364 save_final_cleanups (void)
366 return save_my_cleanups (&final_cleanup_chain
);
370 save_my_cleanups (struct cleanup
**pmy_chain
)
372 struct cleanup
*old_chain
= *pmy_chain
;
378 /* Restore the cleanup chain from a previously saved chain. */
380 restore_cleanups (struct cleanup
*chain
)
382 restore_my_cleanups (&cleanup_chain
, chain
);
386 restore_final_cleanups (struct cleanup
*chain
)
388 restore_my_cleanups (&final_cleanup_chain
, chain
);
392 restore_my_cleanups (struct cleanup
**pmy_chain
, struct cleanup
*chain
)
397 /* This function is useful for cleanups.
401 old_chain = make_cleanup (free_current_contents, &foo);
403 to arrange to free the object thus allocated. */
406 free_current_contents (void *ptr
)
408 void **location
= ptr
;
409 if (location
== NULL
)
410 internal_error (__FILE__
, __LINE__
,
411 "free_current_contents: NULL pointer");
412 if (*location
!= NULL
)
419 /* Provide a known function that does nothing, to use as a base for
420 for a possibly long chain of cleanups. This is useful where we
421 use the cleanup chain for handling normal cleanups as well as dealing
422 with cleanups that need to be done as a result of a call to error().
423 In such cases, we may not be certain where the first cleanup is, unless
424 we have a do-nothing one to always use as the base. */
428 null_cleanup (void *arg
)
432 /* Add a continuation to the continuation list, the global list
433 cmd_continuation. The new continuation will be added at the front.*/
435 add_continuation (void (*continuation_hook
) (struct continuation_arg
*),
436 struct continuation_arg
*arg_list
)
438 struct continuation
*continuation_ptr
;
440 continuation_ptr
= (struct continuation
*) xmalloc (sizeof (struct continuation
));
441 continuation_ptr
->continuation_hook
= continuation_hook
;
442 continuation_ptr
->arg_list
= arg_list
;
443 continuation_ptr
->next
= cmd_continuation
;
444 cmd_continuation
= continuation_ptr
;
447 /* Walk down the cmd_continuation list, and execute all the
448 continuations. There is a problem though. In some cases new
449 continuations may be added while we are in the middle of this
450 loop. If this happens they will be added in the front, and done
451 before we have a chance of exhausting those that were already
452 there. We need to then save the beginning of the list in a pointer
453 and do the continuations from there on, instead of using the
454 global beginning of list as our iteration pointer.*/
456 do_all_continuations (void)
458 struct continuation
*continuation_ptr
;
459 struct continuation
*saved_continuation
;
461 /* Copy the list header into another pointer, and set the global
462 list header to null, so that the global list can change as a side
463 effect of invoking the continuations and the processing of
464 the preexisting continuations will not be affected. */
465 continuation_ptr
= cmd_continuation
;
466 cmd_continuation
= NULL
;
468 /* Work now on the list we have set aside. */
469 while (continuation_ptr
)
471 (continuation_ptr
->continuation_hook
) (continuation_ptr
->arg_list
);
472 saved_continuation
= continuation_ptr
;
473 continuation_ptr
= continuation_ptr
->next
;
474 xfree (saved_continuation
);
478 /* Walk down the cmd_continuation list, and get rid of all the
481 discard_all_continuations (void)
483 struct continuation
*continuation_ptr
;
485 while (cmd_continuation
)
487 continuation_ptr
= cmd_continuation
;
488 cmd_continuation
= continuation_ptr
->next
;
489 xfree (continuation_ptr
);
493 /* Add a continuation to the continuation list, the global list
494 intermediate_continuation. The new continuation will be added at the front.*/
496 add_intermediate_continuation (void (*continuation_hook
)
497 (struct continuation_arg
*),
498 struct continuation_arg
*arg_list
)
500 struct continuation
*continuation_ptr
;
502 continuation_ptr
= (struct continuation
*) xmalloc (sizeof (struct continuation
));
503 continuation_ptr
->continuation_hook
= continuation_hook
;
504 continuation_ptr
->arg_list
= arg_list
;
505 continuation_ptr
->next
= intermediate_continuation
;
506 intermediate_continuation
= continuation_ptr
;
509 /* Walk down the cmd_continuation list, and execute all the
510 continuations. There is a problem though. In some cases new
511 continuations may be added while we are in the middle of this
512 loop. If this happens they will be added in the front, and done
513 before we have a chance of exhausting those that were already
514 there. We need to then save the beginning of the list in a pointer
515 and do the continuations from there on, instead of using the
516 global beginning of list as our iteration pointer.*/
518 do_all_intermediate_continuations (void)
520 struct continuation
*continuation_ptr
;
521 struct continuation
*saved_continuation
;
523 /* Copy the list header into another pointer, and set the global
524 list header to null, so that the global list can change as a side
525 effect of invoking the continuations and the processing of
526 the preexisting continuations will not be affected. */
527 continuation_ptr
= intermediate_continuation
;
528 intermediate_continuation
= NULL
;
530 /* Work now on the list we have set aside. */
531 while (continuation_ptr
)
533 (continuation_ptr
->continuation_hook
) (continuation_ptr
->arg_list
);
534 saved_continuation
= continuation_ptr
;
535 continuation_ptr
= continuation_ptr
->next
;
536 xfree (saved_continuation
);
540 /* Walk down the cmd_continuation list, and get rid of all the
543 discard_all_intermediate_continuations (void)
545 struct continuation
*continuation_ptr
;
547 while (intermediate_continuation
)
549 continuation_ptr
= intermediate_continuation
;
550 intermediate_continuation
= continuation_ptr
->next
;
551 xfree (continuation_ptr
);
557 /* Print a warning message. Way to use this is to call warning_begin,
558 output the warning message (use unfiltered output to gdb_stderr),
559 ending in a newline. There is not currently a warning_end that you
560 call afterwards, but such a thing might be added if it is useful
561 for a GUI to separate warning messages from other output.
563 FIXME: Why do warnings use unfiltered output and errors filtered?
564 Is this anything other than a historical accident? */
569 target_terminal_ours ();
570 wrap_here (""); /* Force out any buffered output */
571 gdb_flush (gdb_stdout
);
572 if (warning_pre_print
)
573 fprintf_unfiltered (gdb_stderr
, warning_pre_print
);
576 /* Print a warning message.
577 The first argument STRING is the warning message, used as a fprintf string,
578 and the remaining args are passed as arguments to it.
579 The primary difference between warnings and errors is that a warning
580 does not force the return to command level. */
583 warning (const char *string
,...)
586 va_start (args
, string
);
588 (*warning_hook
) (string
, args
);
592 vfprintf_unfiltered (gdb_stderr
, string
, args
);
593 fprintf_unfiltered (gdb_stderr
, "\n");
598 /* Start the printing of an error message. Way to use this is to call
599 this, output the error message (use filtered output to gdb_stderr
600 (FIXME: Some callers, like memory_error, use gdb_stdout)), ending
601 in a newline, and then call return_to_top_level (RETURN_ERROR).
602 error() provides a convenient way to do this for the special case
603 that the error message can be formatted with a single printf call,
604 but this is more general. */
608 if (error_begin_hook
)
611 target_terminal_ours ();
612 wrap_here (""); /* Force out any buffered output */
613 gdb_flush (gdb_stdout
);
615 annotate_error_begin ();
618 fprintf_filtered (gdb_stderr
, error_pre_print
);
621 /* Print an error message and return to command level.
622 The first argument STRING is the error message, used as a fprintf string,
623 and the remaining args are passed as arguments to it. */
626 verror (const char *string
, va_list args
)
629 struct cleanup
*err_string_cleanup
;
630 /* FIXME: cagney/1999-11-10: All error calls should come here.
631 Unfortunately some code uses the sequence: error_begin(); print
632 error message; return_to_top_level. That code should be
635 /* NOTE: It's tempting to just do the following...
636 vfprintf_filtered (gdb_stderr, string, args);
637 and then follow with a similar looking statement to cause the message
638 to also go to gdb_lasterr. But if we do this, we'll be traversing the
639 va_list twice which works on some platforms and fails miserably on
641 /* Save it as the last error */
642 ui_file_rewind (gdb_lasterr
);
643 vfprintf_filtered (gdb_lasterr
, string
, args
);
644 /* Retrieve the last error and print it to gdb_stderr */
645 err_string
= error_last_message ();
646 err_string_cleanup
= make_cleanup (xfree
, err_string
);
647 fputs_filtered (err_string
, gdb_stderr
);
648 fprintf_filtered (gdb_stderr
, "\n");
649 do_cleanups (err_string_cleanup
);
650 return_to_top_level (RETURN_ERROR
);
654 error (const char *string
,...)
657 va_start (args
, string
);
658 verror (string
, args
);
663 error_stream (struct ui_file
*stream
)
666 char *msg
= ui_file_xstrdup (stream
, &size
);
667 make_cleanup (xfree
, msg
);
671 /* Get the last error message issued by gdb */
674 error_last_message (void)
677 return ui_file_xstrdup (gdb_lasterr
, &len
);
680 /* This is to be called by main() at the very beginning */
685 gdb_lasterr
= mem_fileopen ();
688 /* Print a message reporting an internal error. Ask the user if they
689 want to continue, dump core, or just exit. */
692 internal_verror (const char *file
, int line
,
693 const char *fmt
, va_list ap
)
695 static char msg
[] = "Internal GDB error: recursive internal error.\n";
696 static int dejavu
= 0;
700 /* don't allow infinite error recursion. */
708 fputs_unfiltered (msg
, gdb_stderr
);
709 abort (); /* NOTE: GDB has only three calls to abort(). */
712 write (STDERR_FILENO
, msg
, sizeof (msg
));
716 /* Try to get the message out */
717 target_terminal_ours ();
718 fprintf_unfiltered (gdb_stderr
, "%s:%d: gdb-internal-error: ", file
, line
);
719 vfprintf_unfiltered (gdb_stderr
, fmt
, ap
);
720 fputs_unfiltered ("\n", gdb_stderr
);
722 /* Default (no case) is to quit GDB. When in batch mode this
723 lessens the likelhood of GDB going into an infinate loop. */
724 continue_p
= query ("\
725 An internal GDB error was detected. This may make further\n\
726 debugging unreliable. Continue this debugging session? ");
728 /* Default (no case) is to not dump core. Lessen the chance of GDB
729 leaving random core files around. */
730 dump_core_p
= query ("\
731 Create a core file containing the current state of GDB? ");
738 abort (); /* NOTE: GDB has only three calls to abort(). */
744 abort (); /* NOTE: GDB has only three calls to abort(). */
750 return_to_top_level (RETURN_ERROR
);
754 internal_error (const char *file
, int line
, const char *string
, ...)
757 va_start (ap
, string
);
759 internal_verror (file
, line
, string
, ap
);
763 /* The strerror() function can return NULL for errno values that are
764 out of range. Provide a "safe" version that always returns a
768 safe_strerror (int errnum
)
773 if ((msg
= strerror (errnum
)) == NULL
)
775 sprintf (buf
, "(undocumented errno %d)", errnum
);
781 /* Print the system error message for errno, and also mention STRING
782 as the file name for which the error was encountered.
783 Then return to command level. */
786 perror_with_name (char *string
)
791 err
= safe_strerror (errno
);
792 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
793 strcpy (combined
, string
);
794 strcat (combined
, ": ");
795 strcat (combined
, err
);
797 /* I understand setting these is a matter of taste. Still, some people
798 may clear errno but not know about bfd_error. Doing this here is not
800 bfd_set_error (bfd_error_no_error
);
803 error ("%s.", combined
);
806 /* Print the system error message for ERRCODE, and also mention STRING
807 as the file name for which the error was encountered. */
810 print_sys_errmsg (char *string
, int errcode
)
815 err
= safe_strerror (errcode
);
816 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
817 strcpy (combined
, string
);
818 strcat (combined
, ": ");
819 strcat (combined
, err
);
821 /* We want anything which was printed on stdout to come out first, before
823 gdb_flush (gdb_stdout
);
824 fprintf_unfiltered (gdb_stderr
, "%s.\n", combined
);
827 /* Control C eventually causes this to be called, at a convenient time. */
832 struct serial
*gdb_stdout_serial
= serial_fdopen (1);
834 target_terminal_ours ();
836 /* We want all output to appear now, before we print "Quit". We
837 have 3 levels of buffering we have to flush (it's possible that
838 some of these should be changed to flush the lower-level ones
841 /* 1. The _filtered buffer. */
842 wrap_here ((char *) 0);
844 /* 2. The stdio buffer. */
845 gdb_flush (gdb_stdout
);
846 gdb_flush (gdb_stderr
);
848 /* 3. The system-level buffer. */
849 serial_drain_output (gdb_stdout_serial
);
850 serial_un_fdopen (gdb_stdout_serial
);
852 annotate_error_begin ();
854 /* Don't use *_filtered; we don't want to prompt the user to continue. */
856 fprintf_unfiltered (gdb_stderr
, quit_pre_print
);
859 /* No steenking SIGINT will ever be coming our way when the
860 program is resumed. Don't lie. */
861 fprintf_unfiltered (gdb_stderr
, "Quit\n");
864 /* If there is no terminal switching for this target, then we can't
865 possibly get screwed by the lack of job control. */
866 || current_target
.to_terminal_ours
== NULL
)
867 fprintf_unfiltered (gdb_stderr
, "Quit\n");
869 fprintf_unfiltered (gdb_stderr
,
870 "Quit (expect signal SIGINT when the program is resumed)\n");
872 return_to_top_level (RETURN_QUIT
);
875 /* Control C comes here */
877 request_quit (int signo
)
880 /* Restore the signal handler. Harmless with BSD-style signals, needed
881 for System V-style signals. So just always do it, rather than worrying
882 about USG defines and stuff like that. */
883 signal (signo
, request_quit
);
893 /* Memory management stuff (malloc friends). */
895 #if !defined (USE_MMALLOC)
897 /* NOTE: These must use PTR so that their definition matches the
898 declaration found in "mmalloc.h". */
901 mmalloc (void *md
, size_t size
)
903 return malloc (size
); /* NOTE: GDB's only call to malloc() */
907 mrealloc (void *md
, void *ptr
, size_t size
)
909 if (ptr
== 0) /* Guard against old realloc's */
910 return mmalloc (md
, size
);
912 return realloc (ptr
, size
); /* NOTE: GDB's only call to ralloc() */
916 mcalloc (void *md
, size_t number
, size_t size
)
918 return calloc (number
, size
); /* NOTE: GDB's only call to calloc() */
922 mfree (void *md
, void *ptr
)
924 free (ptr
); /* NOTE: GDB's only call to free() */
927 #endif /* USE_MMALLOC */
929 #if !defined (USE_MMALLOC) || defined (NO_MMCHECK)
932 init_malloc (void *md
)
936 #else /* Have mmalloc and want corruption checking */
941 fprintf_unfiltered (gdb_stderr
, "Memory corruption\n");
942 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
945 /* Attempt to install hooks in mmalloc/mrealloc/mfree for the heap specified
946 by MD, to detect memory corruption. Note that MD may be NULL to specify
947 the default heap that grows via sbrk.
949 Note that for freshly created regions, we must call mmcheckf prior to any
950 mallocs in the region. Otherwise, any region which was allocated prior to
951 installing the checking hooks, which is later reallocated or freed, will
952 fail the checks! The mmcheck function only allows initial hooks to be
953 installed before the first mmalloc. However, anytime after we have called
954 mmcheck the first time to install the checking hooks, we can call it again
955 to update the function pointer to the memory corruption handler.
957 Returns zero on failure, non-zero on success. */
959 #ifndef MMCHECK_FORCE
960 #define MMCHECK_FORCE 0
964 init_malloc (void *md
)
966 if (!mmcheckf (md
, malloc_botch
, MMCHECK_FORCE
))
968 /* Don't use warning(), which relies on current_target being set
969 to something other than dummy_target, until after
970 initialize_all_files(). */
973 (gdb_stderr
, "warning: failed to install memory consistency checks; ");
975 (gdb_stderr
, "configuration should define NO_MMCHECK or MMCHECK_FORCE\n");
981 #endif /* Have mmalloc and want corruption checking */
983 /* Called when a memory allocation fails, with the number of bytes of
984 memory requested in SIZE. */
991 internal_error (__FILE__
, __LINE__
,
992 "virtual memory exhausted: can't allocate %ld bytes.", size
);
996 internal_error (__FILE__
, __LINE__
,
997 "virtual memory exhausted.");
1001 /* The xmmalloc() family of memory management routines.
1003 These are are like the mmalloc() family except that they implement
1004 consistent semantics and guard against typical memory management
1005 problems: if a malloc fails, an internal error is thrown; if
1006 free(NULL) is called, it is ignored; if *alloc(0) is called, NULL
1009 All these routines are implemented using the mmalloc() family. */
1012 xmmalloc (void *md
, size_t size
)
1022 val
= mmalloc (md
, size
);
1030 xmrealloc (void *md
, void *ptr
, size_t size
)
1044 val
= mrealloc (md
, ptr
, size
);
1048 val
= mmalloc (md
, size
);
1059 xmcalloc (void *md
, size_t number
, size_t size
)
1062 if (number
== 0 || size
== 0)
1066 mem
= mcalloc (md
, number
, size
);
1068 nomem (number
* size
);
1074 xmfree (void *md
, void *ptr
)
1080 /* The xmalloc() (libiberty.h) family of memory management routines.
1082 These are like the ISO-C malloc() family except that they implement
1083 consistent semantics and guard against typical memory management
1084 problems. See xmmalloc() above for further information.
1086 All these routines are wrappers to the xmmalloc() family. */
1088 /* NOTE: These are declared using PTR to ensure consistency with
1089 "libiberty.h". xfree() is GDB local. */
1092 xmalloc (size_t size
)
1094 return xmmalloc (NULL
, size
);
1098 xrealloc (PTR ptr
, size_t size
)
1100 return xmrealloc (NULL
, ptr
, size
);
1104 xcalloc (size_t number
, size_t size
)
1106 return xmcalloc (NULL
, number
, size
);
1116 /* Like asprintf/vasprintf but get an internal_error if the call
1120 xasprintf (char **ret
, const char *format
, ...)
1123 va_start (args
, format
);
1124 xvasprintf (ret
, format
, args
);
1129 xvasprintf (char **ret
, const char *format
, va_list ap
)
1131 int status
= vasprintf (ret
, format
, ap
);
1132 /* NULL could be returned due to a memory allocation problem; a
1133 badly format string; or something else. */
1135 internal_error (__FILE__
, __LINE__
,
1136 "vasprintf returned NULL buffer (errno %d)",
1138 /* A negative status with a non-NULL buffer shouldn't never
1139 happen. But to be sure. */
1141 internal_error (__FILE__
, __LINE__
,
1142 "vasprintf call failed (errno %d)",
1147 /* My replacement for the read system call.
1148 Used like `read' but keeps going if `read' returns too soon. */
1151 myread (int desc
, char *addr
, int len
)
1158 val
= read (desc
, addr
, len
);
1162 return orglen
- len
;
1169 /* Make a copy of the string at PTR with SIZE characters
1170 (and add a null character at the end in the copy).
1171 Uses malloc to get the space. Returns the address of the copy. */
1174 savestring (const char *ptr
, size_t size
)
1176 register char *p
= (char *) xmalloc (size
+ 1);
1177 memcpy (p
, ptr
, size
);
1183 msavestring (void *md
, const char *ptr
, size_t size
)
1185 register char *p
= (char *) xmmalloc (md
, size
+ 1);
1186 memcpy (p
, ptr
, size
);
1192 mstrsave (void *md
, const char *ptr
)
1194 return (msavestring (md
, ptr
, strlen (ptr
)));
1198 print_spaces (register int n
, register struct ui_file
*file
)
1200 fputs_unfiltered (n_spaces (n
), file
);
1203 /* Print a host address. */
1206 gdb_print_host_address (void *addr
, struct ui_file
*stream
)
1209 /* We could use the %p conversion specifier to fprintf if we had any
1210 way of knowing whether this host supports it. But the following
1211 should work on the Alpha and on 32 bit machines. */
1213 fprintf_filtered (stream
, "0x%lx", (unsigned long) addr
);
1216 /* Ask user a y-or-n question and return 1 iff answer is yes.
1217 Takes three args which are given to printf to print the question.
1218 The first, a control string, should end in "? ".
1219 It should not say how to answer, because we do that. */
1223 query (char *ctlstr
,...)
1226 register int answer
;
1230 va_start (args
, ctlstr
);
1234 return query_hook (ctlstr
, args
);
1237 /* Automatically answer "yes" if input is not from a terminal. */
1238 if (!input_from_terminal_p ())
1243 wrap_here (""); /* Flush any buffered output */
1244 gdb_flush (gdb_stdout
);
1246 if (annotation_level
> 1)
1247 printf_filtered ("\n\032\032pre-query\n");
1249 vfprintf_filtered (gdb_stdout
, ctlstr
, args
);
1250 printf_filtered ("(y or n) ");
1252 if (annotation_level
> 1)
1253 printf_filtered ("\n\032\032query\n");
1256 gdb_flush (gdb_stdout
);
1258 answer
= fgetc (stdin
);
1259 clearerr (stdin
); /* in case of C-d */
1260 if (answer
== EOF
) /* C-d */
1265 /* Eat rest of input line, to EOF or newline */
1269 ans2
= fgetc (stdin
);
1272 while (ans2
!= EOF
&& ans2
!= '\n' && ans2
!= '\r');
1286 printf_filtered ("Please answer y or n.\n");
1289 if (annotation_level
> 1)
1290 printf_filtered ("\n\032\032post-query\n");
1295 /* Parse a C escape sequence. STRING_PTR points to a variable
1296 containing a pointer to the string to parse. That pointer
1297 should point to the character after the \. That pointer
1298 is updated past the characters we use. The value of the
1299 escape sequence is returned.
1301 A negative value means the sequence \ newline was seen,
1302 which is supposed to be equivalent to nothing at all.
1304 If \ is followed by a null character, we return a negative
1305 value and leave the string pointer pointing at the null character.
1307 If \ is followed by 000, we return 0 and leave the string pointer
1308 after the zeros. A value of 0 does not mean end of string. */
1311 parse_escape (char **string_ptr
)
1313 register int c
= *(*string_ptr
)++;
1317 return 007; /* Bell (alert) char */
1320 case 'e': /* Escape character */
1338 c
= *(*string_ptr
)++;
1340 c
= parse_escape (string_ptr
);
1343 return (c
& 0200) | (c
& 037);
1354 register int i
= c
- '0';
1355 register int count
= 0;
1358 if ((c
= *(*string_ptr
)++) >= '0' && c
<= '7')
1376 /* Print the character C on STREAM as part of the contents of a literal
1377 string whose delimiter is QUOTER. Note that this routine should only
1378 be call for printing things which are independent of the language
1379 of the program being debugged. */
1382 printchar (int c
, void (*do_fputs
) (const char *, struct ui_file
*),
1383 void (*do_fprintf
) (struct ui_file
*, const char *, ...),
1384 struct ui_file
*stream
, int quoter
)
1387 c
&= 0xFF; /* Avoid sign bit follies */
1389 if (c
< 0x20 || /* Low control chars */
1390 (c
>= 0x7F && c
< 0xA0) || /* DEL, High controls */
1391 (sevenbit_strings
&& c
>= 0x80))
1392 { /* high order bit set */
1396 do_fputs ("\\n", stream
);
1399 do_fputs ("\\b", stream
);
1402 do_fputs ("\\t", stream
);
1405 do_fputs ("\\f", stream
);
1408 do_fputs ("\\r", stream
);
1411 do_fputs ("\\e", stream
);
1414 do_fputs ("\\a", stream
);
1417 do_fprintf (stream
, "\\%.3o", (unsigned int) c
);
1423 if (c
== '\\' || c
== quoter
)
1424 do_fputs ("\\", stream
);
1425 do_fprintf (stream
, "%c", c
);
1429 /* Print the character C on STREAM as part of the contents of a
1430 literal string whose delimiter is QUOTER. Note that these routines
1431 should only be call for printing things which are independent of
1432 the language of the program being debugged. */
1435 fputstr_filtered (const char *str
, int quoter
, struct ui_file
*stream
)
1438 printchar (*str
++, fputs_filtered
, fprintf_filtered
, stream
, quoter
);
1442 fputstr_unfiltered (const char *str
, int quoter
, struct ui_file
*stream
)
1445 printchar (*str
++, fputs_unfiltered
, fprintf_unfiltered
, stream
, quoter
);
1449 fputstrn_unfiltered (const char *str
, int n
, int quoter
, struct ui_file
*stream
)
1452 for (i
= 0; i
< n
; i
++)
1453 printchar (str
[i
], fputs_unfiltered
, fprintf_unfiltered
, stream
, quoter
);
1458 /* Number of lines per page or UINT_MAX if paging is disabled. */
1459 static unsigned int lines_per_page
;
1460 /* Number of chars per line or UINT_MAX if line folding is disabled. */
1461 static unsigned int chars_per_line
;
1462 /* Current count of lines printed on this page, chars on this line. */
1463 static unsigned int lines_printed
, chars_printed
;
1465 /* Buffer and start column of buffered text, for doing smarter word-
1466 wrapping. When someone calls wrap_here(), we start buffering output
1467 that comes through fputs_filtered(). If we see a newline, we just
1468 spit it out and forget about the wrap_here(). If we see another
1469 wrap_here(), we spit it out and remember the newer one. If we see
1470 the end of the line, we spit out a newline, the indent, and then
1471 the buffered output. */
1473 /* Malloc'd buffer with chars_per_line+2 bytes. Contains characters which
1474 are waiting to be output (they have already been counted in chars_printed).
1475 When wrap_buffer[0] is null, the buffer is empty. */
1476 static char *wrap_buffer
;
1478 /* Pointer in wrap_buffer to the next character to fill. */
1479 static char *wrap_pointer
;
1481 /* String to indent by if the wrap occurs. Must not be NULL if wrap_column
1483 static char *wrap_indent
;
1485 /* Column number on the screen where wrap_buffer begins, or 0 if wrapping
1486 is not in effect. */
1487 static int wrap_column
;
1490 /* Inialize the lines and chars per page */
1492 init_page_info (void)
1495 if (!tui_get_command_dimension (&chars_per_line
, &lines_per_page
))
1498 /* These defaults will be used if we are unable to get the correct
1499 values from termcap. */
1500 #if defined(__GO32__)
1501 lines_per_page
= ScreenRows ();
1502 chars_per_line
= ScreenCols ();
1504 lines_per_page
= 24;
1505 chars_per_line
= 80;
1507 #if !defined (_WIN32)
1508 /* No termcap under MPW, although might be cool to do something
1509 by looking at worksheet or console window sizes. */
1510 /* Initialize the screen height and width from termcap. */
1512 char *termtype
= getenv ("TERM");
1514 /* Positive means success, nonpositive means failure. */
1517 /* 2048 is large enough for all known terminals, according to the
1518 GNU termcap manual. */
1519 char term_buffer
[2048];
1523 status
= tgetent (term_buffer
, termtype
);
1527 int running_in_emacs
= getenv ("EMACS") != NULL
;
1529 val
= tgetnum ("li");
1530 if (val
>= 0 && !running_in_emacs
)
1531 lines_per_page
= val
;
1533 /* The number of lines per page is not mentioned
1534 in the terminal description. This probably means
1535 that paging is not useful (e.g. emacs shell window),
1536 so disable paging. */
1537 lines_per_page
= UINT_MAX
;
1539 val
= tgetnum ("co");
1541 chars_per_line
= val
;
1547 #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER)
1549 /* If there is a better way to determine the window size, use it. */
1550 SIGWINCH_HANDLER (SIGWINCH
);
1553 /* If the output is not a terminal, don't paginate it. */
1554 if (!ui_file_isatty (gdb_stdout
))
1555 lines_per_page
= UINT_MAX
;
1556 } /* the command_line_version */
1563 if (chars_per_line
== 0)
1568 wrap_buffer
= (char *) xmalloc (chars_per_line
+ 2);
1569 wrap_buffer
[0] = '\0';
1572 wrap_buffer
= (char *) xrealloc (wrap_buffer
, chars_per_line
+ 2);
1573 wrap_pointer
= wrap_buffer
; /* Start it at the beginning */
1578 set_width_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
1583 /* Wait, so the user can read what's on the screen. Prompt the user
1584 to continue by pressing RETURN. */
1587 prompt_for_continue (void)
1590 char cont_prompt
[120];
1592 if (annotation_level
> 1)
1593 printf_unfiltered ("\n\032\032pre-prompt-for-continue\n");
1595 strcpy (cont_prompt
,
1596 "---Type <return> to continue, or q <return> to quit---");
1597 if (annotation_level
> 1)
1598 strcat (cont_prompt
, "\n\032\032prompt-for-continue\n");
1600 /* We must do this *before* we call gdb_readline, else it will eventually
1601 call us -- thinking that we're trying to print beyond the end of the
1603 reinitialize_more_filter ();
1606 /* On a real operating system, the user can quit with SIGINT.
1609 'q' is provided on all systems so users don't have to change habits
1610 from system to system, and because telling them what to do in
1611 the prompt is more user-friendly than expecting them to think of
1613 /* Call readline, not gdb_readline, because GO32 readline handles control-C
1614 whereas control-C to gdb_readline will cause the user to get dumped
1616 ignore
= readline (cont_prompt
);
1618 if (annotation_level
> 1)
1619 printf_unfiltered ("\n\032\032post-prompt-for-continue\n");
1624 while (*p
== ' ' || *p
== '\t')
1629 request_quit (SIGINT
);
1631 async_request_quit (0);
1637 /* Now we have to do this again, so that GDB will know that it doesn't
1638 need to save the ---Type <return>--- line at the top of the screen. */
1639 reinitialize_more_filter ();
1641 dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */
1644 /* Reinitialize filter; ie. tell it to reset to original values. */
1647 reinitialize_more_filter (void)
1653 /* Indicate that if the next sequence of characters overflows the line,
1654 a newline should be inserted here rather than when it hits the end.
1655 If INDENT is non-null, it is a string to be printed to indent the
1656 wrapped part on the next line. INDENT must remain accessible until
1657 the next call to wrap_here() or until a newline is printed through
1660 If the line is already overfull, we immediately print a newline and
1661 the indentation, and disable further wrapping.
1663 If we don't know the width of lines, but we know the page height,
1664 we must not wrap words, but should still keep track of newlines
1665 that were explicitly printed.
1667 INDENT should not contain tabs, as that will mess up the char count
1668 on the next line. FIXME.
1670 This routine is guaranteed to force out any output which has been
1671 squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be
1672 used to force out output from the wrap_buffer. */
1675 wrap_here (char *indent
)
1677 /* This should have been allocated, but be paranoid anyway. */
1679 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
1683 *wrap_pointer
= '\0';
1684 fputs_unfiltered (wrap_buffer
, gdb_stdout
);
1686 wrap_pointer
= wrap_buffer
;
1687 wrap_buffer
[0] = '\0';
1688 if (chars_per_line
== UINT_MAX
) /* No line overflow checking */
1692 else if (chars_printed
>= chars_per_line
)
1694 puts_filtered ("\n");
1696 puts_filtered (indent
);
1701 wrap_column
= chars_printed
;
1705 wrap_indent
= indent
;
1709 /* Ensure that whatever gets printed next, using the filtered output
1710 commands, starts at the beginning of the line. I.E. if there is
1711 any pending output for the current line, flush it and start a new
1712 line. Otherwise do nothing. */
1717 if (chars_printed
> 0)
1719 puts_filtered ("\n");
1724 /* Like fputs but if FILTER is true, pause after every screenful.
1726 Regardless of FILTER can wrap at points other than the final
1727 character of a line.
1729 Unlike fputs, fputs_maybe_filtered does not return a value.
1730 It is OK for LINEBUFFER to be NULL, in which case just don't print
1733 Note that a longjmp to top level may occur in this routine (only if
1734 FILTER is true) (since prompt_for_continue may do so) so this
1735 routine should not be called when cleanups are not in place. */
1738 fputs_maybe_filtered (const char *linebuffer
, struct ui_file
*stream
,
1741 const char *lineptr
;
1743 if (linebuffer
== 0)
1746 /* Don't do any filtering if it is disabled. */
1747 if ((stream
!= gdb_stdout
) || !pagination_enabled
1748 || (lines_per_page
== UINT_MAX
&& chars_per_line
== UINT_MAX
))
1750 fputs_unfiltered (linebuffer
, stream
);
1754 /* Go through and output each character. Show line extension
1755 when this is necessary; prompt user for new page when this is
1758 lineptr
= linebuffer
;
1761 /* Possible new page. */
1763 (lines_printed
>= lines_per_page
- 1))
1764 prompt_for_continue ();
1766 while (*lineptr
&& *lineptr
!= '\n')
1768 /* Print a single line. */
1769 if (*lineptr
== '\t')
1772 *wrap_pointer
++ = '\t';
1774 fputc_unfiltered ('\t', stream
);
1775 /* Shifting right by 3 produces the number of tab stops
1776 we have already passed, and then adding one and
1777 shifting left 3 advances to the next tab stop. */
1778 chars_printed
= ((chars_printed
>> 3) + 1) << 3;
1784 *wrap_pointer
++ = *lineptr
;
1786 fputc_unfiltered (*lineptr
, stream
);
1791 if (chars_printed
>= chars_per_line
)
1793 unsigned int save_chars
= chars_printed
;
1797 /* If we aren't actually wrapping, don't output newline --
1798 if chars_per_line is right, we probably just overflowed
1799 anyway; if it's wrong, let us keep going. */
1801 fputc_unfiltered ('\n', stream
);
1803 /* Possible new page. */
1804 if (lines_printed
>= lines_per_page
- 1)
1805 prompt_for_continue ();
1807 /* Now output indentation and wrapped string */
1810 fputs_unfiltered (wrap_indent
, stream
);
1811 *wrap_pointer
= '\0'; /* Null-terminate saved stuff */
1812 fputs_unfiltered (wrap_buffer
, stream
); /* and eject it */
1813 /* FIXME, this strlen is what prevents wrap_indent from
1814 containing tabs. However, if we recurse to print it
1815 and count its chars, we risk trouble if wrap_indent is
1816 longer than (the user settable) chars_per_line.
1817 Note also that this can set chars_printed > chars_per_line
1818 if we are printing a long string. */
1819 chars_printed
= strlen (wrap_indent
)
1820 + (save_chars
- wrap_column
);
1821 wrap_pointer
= wrap_buffer
; /* Reset buffer */
1822 wrap_buffer
[0] = '\0';
1823 wrap_column
= 0; /* And disable fancy wrap */
1828 if (*lineptr
== '\n')
1831 wrap_here ((char *) 0); /* Spit out chars, cancel further wraps */
1833 fputc_unfiltered ('\n', stream
);
1840 fputs_filtered (const char *linebuffer
, struct ui_file
*stream
)
1842 fputs_maybe_filtered (linebuffer
, stream
, 1);
1846 putchar_unfiltered (int c
)
1849 ui_file_write (gdb_stdout
, &buf
, 1);
1853 /* Write character C to gdb_stdout using GDB's paging mechanism and return C.
1854 May return nonlocally. */
1857 putchar_filtered (int c
)
1859 return fputc_filtered (c
, gdb_stdout
);
1863 fputc_unfiltered (int c
, struct ui_file
*stream
)
1866 ui_file_write (stream
, &buf
, 1);
1871 fputc_filtered (int c
, struct ui_file
*stream
)
1877 fputs_filtered (buf
, stream
);
1881 /* puts_debug is like fputs_unfiltered, except it prints special
1882 characters in printable fashion. */
1885 puts_debug (char *prefix
, char *string
, char *suffix
)
1889 /* Print prefix and suffix after each line. */
1890 static int new_line
= 1;
1891 static int return_p
= 0;
1892 static char *prev_prefix
= "";
1893 static char *prev_suffix
= "";
1895 if (*string
== '\n')
1898 /* If the prefix is changing, print the previous suffix, a new line,
1899 and the new prefix. */
1900 if ((return_p
|| (strcmp (prev_prefix
, prefix
) != 0)) && !new_line
)
1902 fputs_unfiltered (prev_suffix
, gdb_stdlog
);
1903 fputs_unfiltered ("\n", gdb_stdlog
);
1904 fputs_unfiltered (prefix
, gdb_stdlog
);
1907 /* Print prefix if we printed a newline during the previous call. */
1911 fputs_unfiltered (prefix
, gdb_stdlog
);
1914 prev_prefix
= prefix
;
1915 prev_suffix
= suffix
;
1917 /* Output characters in a printable format. */
1918 while ((ch
= *string
++) != '\0')
1924 fputc_unfiltered (ch
, gdb_stdlog
);
1927 fprintf_unfiltered (gdb_stdlog
, "\\x%02x", ch
& 0xff);
1931 fputs_unfiltered ("\\\\", gdb_stdlog
);
1934 fputs_unfiltered ("\\b", gdb_stdlog
);
1937 fputs_unfiltered ("\\f", gdb_stdlog
);
1941 fputs_unfiltered ("\\n", gdb_stdlog
);
1944 fputs_unfiltered ("\\r", gdb_stdlog
);
1947 fputs_unfiltered ("\\t", gdb_stdlog
);
1950 fputs_unfiltered ("\\v", gdb_stdlog
);
1954 return_p
= ch
== '\r';
1957 /* Print suffix if we printed a newline. */
1960 fputs_unfiltered (suffix
, gdb_stdlog
);
1961 fputs_unfiltered ("\n", gdb_stdlog
);
1966 /* Print a variable number of ARGS using format FORMAT. If this
1967 information is going to put the amount written (since the last call
1968 to REINITIALIZE_MORE_FILTER or the last page break) over the page size,
1969 call prompt_for_continue to get the users permision to continue.
1971 Unlike fprintf, this function does not return a value.
1973 We implement three variants, vfprintf (takes a vararg list and stream),
1974 fprintf (takes a stream to write on), and printf (the usual).
1976 Note also that a longjmp to top level may occur in this routine
1977 (since prompt_for_continue may do so) so this routine should not be
1978 called when cleanups are not in place. */
1981 vfprintf_maybe_filtered (struct ui_file
*stream
, const char *format
,
1982 va_list args
, int filter
)
1985 struct cleanup
*old_cleanups
;
1987 xvasprintf (&linebuffer
, format
, args
);
1988 old_cleanups
= make_cleanup (xfree
, linebuffer
);
1989 fputs_maybe_filtered (linebuffer
, stream
, filter
);
1990 do_cleanups (old_cleanups
);
1995 vfprintf_filtered (struct ui_file
*stream
, const char *format
, va_list args
)
1997 vfprintf_maybe_filtered (stream
, format
, args
, 1);
2001 vfprintf_unfiltered (struct ui_file
*stream
, const char *format
, va_list args
)
2004 struct cleanup
*old_cleanups
;
2006 xvasprintf (&linebuffer
, format
, args
);
2007 old_cleanups
= make_cleanup (xfree
, linebuffer
);
2008 fputs_unfiltered (linebuffer
, stream
);
2009 do_cleanups (old_cleanups
);
2013 vprintf_filtered (const char *format
, va_list args
)
2015 vfprintf_maybe_filtered (gdb_stdout
, format
, args
, 1);
2019 vprintf_unfiltered (const char *format
, va_list args
)
2021 vfprintf_unfiltered (gdb_stdout
, format
, args
);
2025 fprintf_filtered (struct ui_file
* stream
, const char *format
,...)
2028 va_start (args
, format
);
2029 vfprintf_filtered (stream
, format
, args
);
2034 fprintf_unfiltered (struct ui_file
* stream
, const char *format
,...)
2037 va_start (args
, format
);
2038 vfprintf_unfiltered (stream
, format
, args
);
2042 /* Like fprintf_filtered, but prints its result indented.
2043 Called as fprintfi_filtered (spaces, stream, format, ...); */
2046 fprintfi_filtered (int spaces
, struct ui_file
* stream
, const char *format
,...)
2049 va_start (args
, format
);
2050 print_spaces_filtered (spaces
, stream
);
2052 vfprintf_filtered (stream
, format
, args
);
2058 printf_filtered (const char *format
,...)
2061 va_start (args
, format
);
2062 vfprintf_filtered (gdb_stdout
, format
, args
);
2068 printf_unfiltered (const char *format
,...)
2071 va_start (args
, format
);
2072 vfprintf_unfiltered (gdb_stdout
, format
, args
);
2076 /* Like printf_filtered, but prints it's result indented.
2077 Called as printfi_filtered (spaces, format, ...); */
2080 printfi_filtered (int spaces
, const char *format
,...)
2083 va_start (args
, format
);
2084 print_spaces_filtered (spaces
, gdb_stdout
);
2085 vfprintf_filtered (gdb_stdout
, format
, args
);
2089 /* Easy -- but watch out!
2091 This routine is *not* a replacement for puts()! puts() appends a newline.
2092 This one doesn't, and had better not! */
2095 puts_filtered (const char *string
)
2097 fputs_filtered (string
, gdb_stdout
);
2101 puts_unfiltered (const char *string
)
2103 fputs_unfiltered (string
, gdb_stdout
);
2106 /* Return a pointer to N spaces and a null. The pointer is good
2107 until the next call to here. */
2112 static char *spaces
= 0;
2113 static int max_spaces
= -1;
2119 spaces
= (char *) xmalloc (n
+ 1);
2120 for (t
= spaces
+ n
; t
!= spaces
;)
2126 return spaces
+ max_spaces
- n
;
2129 /* Print N spaces. */
2131 print_spaces_filtered (int n
, struct ui_file
*stream
)
2133 fputs_filtered (n_spaces (n
), stream
);
2136 /* C++ demangler stuff. */
2138 /* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language
2139 LANG, using demangling args ARG_MODE, and print it filtered to STREAM.
2140 If the name is not mangled, or the language for the name is unknown, or
2141 demangling is off, the name is printed in its "raw" form. */
2144 fprintf_symbol_filtered (struct ui_file
*stream
, char *name
, enum language lang
,
2151 /* If user wants to see raw output, no problem. */
2154 fputs_filtered (name
, stream
);
2160 case language_cplus
:
2161 demangled
= cplus_demangle (name
, arg_mode
);
2164 demangled
= cplus_demangle (name
, arg_mode
| DMGL_JAVA
);
2166 case language_chill
:
2167 demangled
= chill_demangle (name
);
2173 fputs_filtered (demangled
? demangled
: name
, stream
);
2174 if (demangled
!= NULL
)
2182 /* Do a strcmp() type operation on STRING1 and STRING2, ignoring any
2183 differences in whitespace. Returns 0 if they match, non-zero if they
2184 don't (slightly different than strcmp()'s range of return values).
2186 As an extra hack, string1=="FOO(ARGS)" matches string2=="FOO".
2187 This "feature" is useful when searching for matching C++ function names
2188 (such as if the user types 'break FOO', where FOO is a mangled C++
2192 strcmp_iw (const char *string1
, const char *string2
)
2194 while ((*string1
!= '\0') && (*string2
!= '\0'))
2196 while (isspace (*string1
))
2200 while (isspace (*string2
))
2204 if (*string1
!= *string2
)
2208 if (*string1
!= '\0')
2214 return (*string1
!= '\0' && *string1
!= '(') || (*string2
!= '\0');
2220 ** Answer whether string_to_compare is a full or partial match to
2221 ** template_string. The partial match must be in sequence starting
2225 subset_compare (char *string_to_compare
, char *template_string
)
2228 if (template_string
!= (char *) NULL
&& string_to_compare
!= (char *) NULL
&&
2229 strlen (string_to_compare
) <= strlen (template_string
))
2230 match
= (strncmp (template_string
,
2232 strlen (string_to_compare
)) == 0);
2239 static void pagination_on_command (char *arg
, int from_tty
);
2241 pagination_on_command (char *arg
, int from_tty
)
2243 pagination_enabled
= 1;
2246 static void pagination_on_command (char *arg
, int from_tty
);
2248 pagination_off_command (char *arg
, int from_tty
)
2250 pagination_enabled
= 0;
2255 initialize_utils (void)
2257 struct cmd_list_element
*c
;
2259 c
= add_set_cmd ("width", class_support
, var_uinteger
,
2260 (char *) &chars_per_line
,
2261 "Set number of characters gdb thinks are in a line.",
2263 add_show_from_set (c
, &showlist
);
2264 c
->function
.sfunc
= set_width_command
;
2267 (add_set_cmd ("height", class_support
,
2268 var_uinteger
, (char *) &lines_per_page
,
2269 "Set number of lines gdb thinks are in a page.", &setlist
),
2274 /* If the output is not a terminal, don't paginate it. */
2275 if (!ui_file_isatty (gdb_stdout
))
2276 lines_per_page
= UINT_MAX
;
2278 set_width_command ((char *) NULL
, 0, c
);
2281 (add_set_cmd ("demangle", class_support
, var_boolean
,
2283 "Set demangling of encoded C++ names when displaying symbols.",
2288 (add_set_cmd ("pagination", class_support
,
2289 var_boolean
, (char *) &pagination_enabled
,
2290 "Set state of pagination.", &setlist
),
2295 add_com ("am", class_support
, pagination_on_command
,
2296 "Enable pagination");
2297 add_com ("sm", class_support
, pagination_off_command
,
2298 "Disable pagination");
2302 (add_set_cmd ("sevenbit-strings", class_support
, var_boolean
,
2303 (char *) &sevenbit_strings
,
2304 "Set printing of 8-bit characters in strings as \\nnn.",
2309 (add_set_cmd ("asm-demangle", class_support
, var_boolean
,
2310 (char *) &asm_demangle
,
2311 "Set demangling of C++ names in disassembly listings.",
2316 /* Machine specific function to handle SIGWINCH signal. */
2318 #ifdef SIGWINCH_HANDLER_BODY
2319 SIGWINCH_HANDLER_BODY
2322 /* print routines to handle variable size regs, etc. */
2324 /* temporary storage using circular buffer */
2330 static char buf
[NUMCELLS
][CELLSIZE
];
2331 static int cell
= 0;
2332 if (++cell
>= NUMCELLS
)
2340 return (TARGET_ADDR_BIT
/ 8 * 2);
2344 paddr (CORE_ADDR addr
)
2346 return phex (addr
, TARGET_ADDR_BIT
/ 8);
2350 paddr_nz (CORE_ADDR addr
)
2352 return phex_nz (addr
, TARGET_ADDR_BIT
/ 8);
2356 decimal2str (char *paddr_str
, char *sign
, ULONGEST addr
)
2358 /* steal code from valprint.c:print_decimal(). Should this worry
2359 about the real size of addr as the above does? */
2360 unsigned long temp
[3];
2364 temp
[i
] = addr
% (1000 * 1000 * 1000);
2365 addr
/= (1000 * 1000 * 1000);
2368 while (addr
!= 0 && i
< (sizeof (temp
) / sizeof (temp
[0])));
2372 sprintf (paddr_str
, "%s%lu",
2376 sprintf (paddr_str
, "%s%lu%09lu",
2377 sign
, temp
[1], temp
[0]);
2380 sprintf (paddr_str
, "%s%lu%09lu%09lu",
2381 sign
, temp
[2], temp
[1], temp
[0]);
2384 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
2389 paddr_u (CORE_ADDR addr
)
2391 char *paddr_str
= get_cell ();
2392 decimal2str (paddr_str
, "", addr
);
2397 paddr_d (LONGEST addr
)
2399 char *paddr_str
= get_cell ();
2401 decimal2str (paddr_str
, "-", -addr
);
2403 decimal2str (paddr_str
, "", addr
);
2407 /* eliminate warning from compiler on 32-bit systems */
2408 static int thirty_two
= 32;
2411 phex (ULONGEST l
, int sizeof_l
)
2418 sprintf (str
, "%08lx%08lx",
2419 (unsigned long) (l
>> thirty_two
),
2420 (unsigned long) (l
& 0xffffffff));
2424 sprintf (str
, "%08lx", (unsigned long) l
);
2428 sprintf (str
, "%04x", (unsigned short) (l
& 0xffff));
2431 str
= phex (l
, sizeof (l
));
2438 phex_nz (ULONGEST l
, int sizeof_l
)
2445 unsigned long high
= (unsigned long) (l
>> thirty_two
);
2448 sprintf (str
, "%lx", (unsigned long) (l
& 0xffffffff));
2450 sprintf (str
, "%lx%08lx",
2451 high
, (unsigned long) (l
& 0xffffffff));
2456 sprintf (str
, "%lx", (unsigned long) l
);
2460 sprintf (str
, "%x", (unsigned short) (l
& 0xffff));
2463 str
= phex_nz (l
, sizeof (l
));
2470 /* Convert to / from the hosts pointer to GDB's internal CORE_ADDR
2471 using the target's conversion routines. */
2473 host_pointer_to_address (void *ptr
)
2475 if (sizeof (ptr
) != TYPE_LENGTH (builtin_type_void_data_ptr
))
2476 internal_error (__FILE__
, __LINE__
,
2477 "core_addr_to_void_ptr: bad cast");
2478 return POINTER_TO_ADDRESS (builtin_type_void_data_ptr
, &ptr
);
2482 address_to_host_pointer (CORE_ADDR addr
)
2485 if (sizeof (ptr
) != TYPE_LENGTH (builtin_type_void_data_ptr
))
2486 internal_error (__FILE__
, __LINE__
,
2487 "core_addr_to_void_ptr: bad cast");
2488 ADDRESS_TO_POINTER (builtin_type_void_data_ptr
, &ptr
, addr
);
2492 /* Convert a CORE_ADDR into a string. */
2494 core_addr_to_string (const CORE_ADDR addr
)
2496 char *str
= get_cell ();
2498 strcat (str
, phex_nz (addr
, sizeof (addr
)));
2502 /* Convert a string back into a CORE_ADDR. */
2504 string_to_core_addr (const char *my_string
)
2507 if (my_string
[0] == '0' && tolower (my_string
[1]) == 'x')
2509 /* Assume that it is in decimal. */
2511 for (i
= 2; my_string
[i
] != '\0'; i
++)
2513 if (isdigit (my_string
[i
]))
2514 addr
= (my_string
[i
] - '0') + (addr
* 16);
2515 else if (isxdigit (my_string
[i
]))
2516 addr
= (tolower (my_string
[i
]) - 'a' + 0xa) + (addr
* 16);
2518 internal_error (__FILE__
, __LINE__
, "invalid hex");
2523 /* Assume that it is in decimal. */
2525 for (i
= 0; my_string
[i
] != '\0'; i
++)
2527 if (isdigit (my_string
[i
]))
2528 addr
= (my_string
[i
] - '0') + (addr
* 10);
2530 internal_error (__FILE__
, __LINE__
, "invalid decimal");
2537 gdb_realpath (const char *filename
)
2539 #ifdef HAVE_REALPATH
2541 char *rp
= realpath (filename
, buf
);
2542 return xstrdup (rp
? rp
: filename
);
2544 return xstrdup (filename
);