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 <sys/param.h> /* For MAXPATHLEN */
59 #include <readline/readline.h>
65 #ifdef NEED_DECLARATION_MALLOC
68 #ifdef NEED_DECLARATION_REALLOC
69 extern PTR
realloc ();
71 #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. The first argument STRING is the warning
558 message, used as an fprintf format string, the second is the
559 va_list of arguments for that string. A warning is unfiltered (not
560 paginated) so that the user does not need to page through each
561 screen full of warnings when there are lots of them. */
564 vwarning (const char *string
, va_list args
)
567 (*warning_hook
) (string
, args
);
570 target_terminal_ours ();
571 wrap_here (""); /* Force out any buffered output */
572 gdb_flush (gdb_stdout
);
573 if (warning_pre_print
)
574 fprintf_unfiltered (gdb_stderr
, warning_pre_print
);
575 vfprintf_unfiltered (gdb_stderr
, string
, args
);
576 fprintf_unfiltered (gdb_stderr
, "\n");
581 /* Print a warning message.
582 The first argument STRING is the warning message, used as a fprintf string,
583 and the remaining args are passed as arguments to it.
584 The primary difference between warnings and errors is that a warning
585 does not force the return to command level. */
588 warning (const char *string
,...)
591 va_start (args
, string
);
592 vwarning (string
, args
);
596 /* Print an error message and return to command level.
597 The first argument STRING is the error message, used as a fprintf string,
598 and the remaining args are passed as arguments to it. */
601 verror (const char *string
, va_list args
)
603 struct ui_file
*tmp_stream
= mem_fileopen ();
604 make_cleanup_ui_file_delete (tmp_stream
);
605 vfprintf_unfiltered (tmp_stream
, string
, args
);
606 error_stream (tmp_stream
);
610 error (const char *string
,...)
613 va_start (args
, string
);
614 verror (string
, args
);
619 do_write (void *data
, const char *buffer
, long length_buffer
)
621 ui_file_write (data
, buffer
, length_buffer
);
625 error_stream (struct ui_file
*stream
)
627 if (error_begin_hook
)
630 /* Copy the stream into the GDB_LASTERR buffer. */
631 ui_file_rewind (gdb_lasterr
);
632 ui_file_put (stream
, do_write
, gdb_lasterr
);
634 /* Write the message plus any error_pre_print to gdb_stderr. */
635 target_terminal_ours ();
636 wrap_here (""); /* Force out any buffered output */
637 gdb_flush (gdb_stdout
);
638 annotate_error_begin ();
640 fprintf_filtered (gdb_stderr
, error_pre_print
);
641 ui_file_put (stream
, do_write
, gdb_stderr
);
642 fprintf_filtered (gdb_stderr
, "\n");
644 return_to_top_level (RETURN_ERROR
);
647 /* Get the last error message issued by gdb */
650 error_last_message (void)
653 return ui_file_xstrdup (gdb_lasterr
, &len
);
656 /* This is to be called by main() at the very beginning */
661 gdb_lasterr
= mem_fileopen ();
664 /* Print a message reporting an internal error. Ask the user if they
665 want to continue, dump core, or just exit. */
668 internal_verror (const char *file
, int line
,
669 const char *fmt
, va_list ap
)
671 static char msg
[] = "Internal GDB error: recursive internal error.\n";
672 static int dejavu
= 0;
676 /* don't allow infinite error recursion. */
684 fputs_unfiltered (msg
, gdb_stderr
);
685 abort (); /* NOTE: GDB has only three calls to abort(). */
688 write (STDERR_FILENO
, msg
, sizeof (msg
));
692 /* Try to get the message out */
693 target_terminal_ours ();
694 fprintf_unfiltered (gdb_stderr
, "%s:%d: gdb-internal-error: ", file
, line
);
695 vfprintf_unfiltered (gdb_stderr
, fmt
, ap
);
696 fputs_unfiltered ("\n", gdb_stderr
);
698 /* Default (yes/batch case) is to quit GDB. When in batch mode this
699 lessens the likelhood of GDB going into an infinate loop. */
701 An internal GDB error was detected. This may make further\n\
702 debugging unreliable. Quit this debugging session? ");
704 /* Default (yes/batch case) is to dump core. This leaves a GDB
705 dropping so that it is easier to see that something went wrong to
707 dump_core_p
= query ("\
708 Create a core file containing the current state of GDB? ");
713 abort (); /* NOTE: GDB has only three calls to abort(). */
722 abort (); /* NOTE: GDB has only three calls to abort(). */
727 return_to_top_level (RETURN_ERROR
);
731 internal_error (const char *file
, int line
, const char *string
, ...)
734 va_start (ap
, string
);
736 internal_verror (file
, line
, string
, ap
);
740 /* The strerror() function can return NULL for errno values that are
741 out of range. Provide a "safe" version that always returns a
745 safe_strerror (int errnum
)
750 if ((msg
= strerror (errnum
)) == NULL
)
752 sprintf (buf
, "(undocumented errno %d)", errnum
);
758 /* Print the system error message for errno, and also mention STRING
759 as the file name for which the error was encountered.
760 Then return to command level. */
763 perror_with_name (char *string
)
768 err
= safe_strerror (errno
);
769 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
770 strcpy (combined
, string
);
771 strcat (combined
, ": ");
772 strcat (combined
, err
);
774 /* I understand setting these is a matter of taste. Still, some people
775 may clear errno but not know about bfd_error. Doing this here is not
777 bfd_set_error (bfd_error_no_error
);
780 error ("%s.", combined
);
783 /* Print the system error message for ERRCODE, and also mention STRING
784 as the file name for which the error was encountered. */
787 print_sys_errmsg (char *string
, int errcode
)
792 err
= safe_strerror (errcode
);
793 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
794 strcpy (combined
, string
);
795 strcat (combined
, ": ");
796 strcat (combined
, err
);
798 /* We want anything which was printed on stdout to come out first, before
800 gdb_flush (gdb_stdout
);
801 fprintf_unfiltered (gdb_stderr
, "%s.\n", combined
);
804 /* Control C eventually causes this to be called, at a convenient time. */
809 struct serial
*gdb_stdout_serial
= serial_fdopen (1);
811 target_terminal_ours ();
813 /* We want all output to appear now, before we print "Quit". We
814 have 3 levels of buffering we have to flush (it's possible that
815 some of these should be changed to flush the lower-level ones
818 /* 1. The _filtered buffer. */
819 wrap_here ((char *) 0);
821 /* 2. The stdio buffer. */
822 gdb_flush (gdb_stdout
);
823 gdb_flush (gdb_stderr
);
825 /* 3. The system-level buffer. */
826 serial_drain_output (gdb_stdout_serial
);
827 serial_un_fdopen (gdb_stdout_serial
);
829 annotate_error_begin ();
831 /* Don't use *_filtered; we don't want to prompt the user to continue. */
833 fprintf_unfiltered (gdb_stderr
, quit_pre_print
);
836 /* No steenking SIGINT will ever be coming our way when the
837 program is resumed. Don't lie. */
838 fprintf_unfiltered (gdb_stderr
, "Quit\n");
841 /* If there is no terminal switching for this target, then we can't
842 possibly get screwed by the lack of job control. */
843 || current_target
.to_terminal_ours
== NULL
)
844 fprintf_unfiltered (gdb_stderr
, "Quit\n");
846 fprintf_unfiltered (gdb_stderr
,
847 "Quit (expect signal SIGINT when the program is resumed)\n");
849 return_to_top_level (RETURN_QUIT
);
852 /* Control C comes here */
854 request_quit (int signo
)
857 /* Restore the signal handler. Harmless with BSD-style signals, needed
858 for System V-style signals. So just always do it, rather than worrying
859 about USG defines and stuff like that. */
860 signal (signo
, request_quit
);
870 /* Memory management stuff (malloc friends). */
872 #if !defined (USE_MMALLOC)
874 /* NOTE: These must use PTR so that their definition matches the
875 declaration found in "mmalloc.h". */
878 mmalloc (void *md
, size_t size
)
880 return malloc (size
); /* NOTE: GDB's only call to malloc() */
884 mrealloc (void *md
, void *ptr
, size_t size
)
886 if (ptr
== 0) /* Guard against old realloc's */
887 return mmalloc (md
, size
);
889 return realloc (ptr
, size
); /* NOTE: GDB's only call to ralloc() */
893 mcalloc (void *md
, size_t number
, size_t size
)
895 return calloc (number
, size
); /* NOTE: GDB's only call to calloc() */
899 mfree (void *md
, void *ptr
)
901 free (ptr
); /* NOTE: GDB's only call to free() */
904 #endif /* USE_MMALLOC */
906 #if !defined (USE_MMALLOC) || defined (NO_MMCHECK)
909 init_malloc (void *md
)
913 #else /* Have mmalloc and want corruption checking */
918 fprintf_unfiltered (gdb_stderr
, "Memory corruption\n");
919 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
922 /* Attempt to install hooks in mmalloc/mrealloc/mfree for the heap specified
923 by MD, to detect memory corruption. Note that MD may be NULL to specify
924 the default heap that grows via sbrk.
926 Note that for freshly created regions, we must call mmcheckf prior to any
927 mallocs in the region. Otherwise, any region which was allocated prior to
928 installing the checking hooks, which is later reallocated or freed, will
929 fail the checks! The mmcheck function only allows initial hooks to be
930 installed before the first mmalloc. However, anytime after we have called
931 mmcheck the first time to install the checking hooks, we can call it again
932 to update the function pointer to the memory corruption handler.
934 Returns zero on failure, non-zero on success. */
936 #ifndef MMCHECK_FORCE
937 #define MMCHECK_FORCE 0
941 init_malloc (void *md
)
943 if (!mmcheckf (md
, malloc_botch
, MMCHECK_FORCE
))
945 /* Don't use warning(), which relies on current_target being set
946 to something other than dummy_target, until after
947 initialize_all_files(). */
950 (gdb_stderr
, "warning: failed to install memory consistency checks; ");
952 (gdb_stderr
, "configuration should define NO_MMCHECK or MMCHECK_FORCE\n");
958 #endif /* Have mmalloc and want corruption checking */
960 /* Called when a memory allocation fails, with the number of bytes of
961 memory requested in SIZE. */
968 internal_error (__FILE__
, __LINE__
,
969 "virtual memory exhausted: can't allocate %ld bytes.", size
);
973 internal_error (__FILE__
, __LINE__
,
974 "virtual memory exhausted.");
978 /* The xmmalloc() family of memory management routines.
980 These are are like the mmalloc() family except that they implement
981 consistent semantics and guard against typical memory management
982 problems: if a malloc fails, an internal error is thrown; if
983 free(NULL) is called, it is ignored; if *alloc(0) is called, NULL
986 All these routines are implemented using the mmalloc() family. */
989 xmmalloc (void *md
, size_t size
)
999 val
= mmalloc (md
, size
);
1007 xmrealloc (void *md
, void *ptr
, size_t size
)
1021 val
= mrealloc (md
, ptr
, size
);
1025 val
= mmalloc (md
, size
);
1036 xmcalloc (void *md
, size_t number
, size_t size
)
1039 if (number
== 0 || size
== 0)
1043 mem
= mcalloc (md
, number
, size
);
1045 nomem (number
* size
);
1051 xmfree (void *md
, void *ptr
)
1057 /* The xmalloc() (libiberty.h) family of memory management routines.
1059 These are like the ISO-C malloc() family except that they implement
1060 consistent semantics and guard against typical memory management
1061 problems. See xmmalloc() above for further information.
1063 All these routines are wrappers to the xmmalloc() family. */
1065 /* NOTE: These are declared using PTR to ensure consistency with
1066 "libiberty.h". xfree() is GDB local. */
1069 xmalloc (size_t size
)
1071 return xmmalloc (NULL
, size
);
1075 xrealloc (PTR ptr
, size_t size
)
1077 return xmrealloc (NULL
, ptr
, size
);
1081 xcalloc (size_t number
, size_t size
)
1083 return xmcalloc (NULL
, number
, size
);
1093 /* Like asprintf/vasprintf but get an internal_error if the call
1097 xasprintf (char **ret
, const char *format
, ...)
1100 va_start (args
, format
);
1101 xvasprintf (ret
, format
, args
);
1106 xvasprintf (char **ret
, const char *format
, va_list ap
)
1108 int status
= vasprintf (ret
, format
, ap
);
1109 /* NULL could be returned due to a memory allocation problem; a
1110 badly format string; or something else. */
1112 internal_error (__FILE__
, __LINE__
,
1113 "vasprintf returned NULL buffer (errno %d)",
1115 /* A negative status with a non-NULL buffer shouldn't never
1116 happen. But to be sure. */
1118 internal_error (__FILE__
, __LINE__
,
1119 "vasprintf call failed (errno %d)",
1124 /* My replacement for the read system call.
1125 Used like `read' but keeps going if `read' returns too soon. */
1128 myread (int desc
, char *addr
, int len
)
1135 val
= read (desc
, addr
, len
);
1139 return orglen
- len
;
1146 /* Make a copy of the string at PTR with SIZE characters
1147 (and add a null character at the end in the copy).
1148 Uses malloc to get the space. Returns the address of the copy. */
1151 savestring (const char *ptr
, size_t size
)
1153 register char *p
= (char *) xmalloc (size
+ 1);
1154 memcpy (p
, ptr
, size
);
1160 msavestring (void *md
, const char *ptr
, size_t size
)
1162 register char *p
= (char *) xmmalloc (md
, size
+ 1);
1163 memcpy (p
, ptr
, size
);
1169 mstrsave (void *md
, const char *ptr
)
1171 return (msavestring (md
, ptr
, strlen (ptr
)));
1175 print_spaces (register int n
, register struct ui_file
*file
)
1177 fputs_unfiltered (n_spaces (n
), file
);
1180 /* Print a host address. */
1183 gdb_print_host_address (void *addr
, struct ui_file
*stream
)
1186 /* We could use the %p conversion specifier to fprintf if we had any
1187 way of knowing whether this host supports it. But the following
1188 should work on the Alpha and on 32 bit machines. */
1190 fprintf_filtered (stream
, "0x%lx", (unsigned long) addr
);
1193 /* Ask user a y-or-n question and return 1 iff answer is yes.
1194 Takes three args which are given to printf to print the question.
1195 The first, a control string, should end in "? ".
1196 It should not say how to answer, because we do that. */
1200 query (char *ctlstr
,...)
1203 register int answer
;
1207 va_start (args
, ctlstr
);
1211 return query_hook (ctlstr
, args
);
1214 /* Automatically answer "yes" if input is not from a terminal. */
1215 if (!input_from_terminal_p ())
1220 wrap_here (""); /* Flush any buffered output */
1221 gdb_flush (gdb_stdout
);
1223 if (annotation_level
> 1)
1224 printf_filtered ("\n\032\032pre-query\n");
1226 vfprintf_filtered (gdb_stdout
, ctlstr
, args
);
1227 printf_filtered ("(y or n) ");
1229 if (annotation_level
> 1)
1230 printf_filtered ("\n\032\032query\n");
1233 gdb_flush (gdb_stdout
);
1235 answer
= fgetc (stdin
);
1236 clearerr (stdin
); /* in case of C-d */
1237 if (answer
== EOF
) /* C-d */
1242 /* Eat rest of input line, to EOF or newline */
1246 ans2
= fgetc (stdin
);
1249 while (ans2
!= EOF
&& ans2
!= '\n' && ans2
!= '\r');
1263 printf_filtered ("Please answer y or n.\n");
1266 if (annotation_level
> 1)
1267 printf_filtered ("\n\032\032post-query\n");
1272 /* Parse a C escape sequence. STRING_PTR points to a variable
1273 containing a pointer to the string to parse. That pointer
1274 should point to the character after the \. That pointer
1275 is updated past the characters we use. The value of the
1276 escape sequence is returned.
1278 A negative value means the sequence \ newline was seen,
1279 which is supposed to be equivalent to nothing at all.
1281 If \ is followed by a null character, we return a negative
1282 value and leave the string pointer pointing at the null character.
1284 If \ is followed by 000, we return 0 and leave the string pointer
1285 after the zeros. A value of 0 does not mean end of string. */
1288 parse_escape (char **string_ptr
)
1290 register int c
= *(*string_ptr
)++;
1294 return 007; /* Bell (alert) char */
1297 case 'e': /* Escape character */
1315 c
= *(*string_ptr
)++;
1317 c
= parse_escape (string_ptr
);
1320 return (c
& 0200) | (c
& 037);
1331 register int i
= c
- '0';
1332 register int count
= 0;
1335 if ((c
= *(*string_ptr
)++) >= '0' && c
<= '7')
1353 /* Print the character C on STREAM as part of the contents of a literal
1354 string whose delimiter is QUOTER. Note that this routine should only
1355 be call for printing things which are independent of the language
1356 of the program being debugged. */
1359 printchar (int c
, void (*do_fputs
) (const char *, struct ui_file
*),
1360 void (*do_fprintf
) (struct ui_file
*, const char *, ...),
1361 struct ui_file
*stream
, int quoter
)
1364 c
&= 0xFF; /* Avoid sign bit follies */
1366 if (c
< 0x20 || /* Low control chars */
1367 (c
>= 0x7F && c
< 0xA0) || /* DEL, High controls */
1368 (sevenbit_strings
&& c
>= 0x80))
1369 { /* high order bit set */
1373 do_fputs ("\\n", stream
);
1376 do_fputs ("\\b", stream
);
1379 do_fputs ("\\t", stream
);
1382 do_fputs ("\\f", stream
);
1385 do_fputs ("\\r", stream
);
1388 do_fputs ("\\e", stream
);
1391 do_fputs ("\\a", stream
);
1394 do_fprintf (stream
, "\\%.3o", (unsigned int) c
);
1400 if (c
== '\\' || c
== quoter
)
1401 do_fputs ("\\", stream
);
1402 do_fprintf (stream
, "%c", c
);
1406 /* Print the character C on STREAM as part of the contents of a
1407 literal string whose delimiter is QUOTER. Note that these routines
1408 should only be call for printing things which are independent of
1409 the language of the program being debugged. */
1412 fputstr_filtered (const char *str
, int quoter
, struct ui_file
*stream
)
1415 printchar (*str
++, fputs_filtered
, fprintf_filtered
, stream
, quoter
);
1419 fputstr_unfiltered (const char *str
, int quoter
, struct ui_file
*stream
)
1422 printchar (*str
++, fputs_unfiltered
, fprintf_unfiltered
, stream
, quoter
);
1426 fputstrn_unfiltered (const char *str
, int n
, int quoter
, struct ui_file
*stream
)
1429 for (i
= 0; i
< n
; i
++)
1430 printchar (str
[i
], fputs_unfiltered
, fprintf_unfiltered
, stream
, quoter
);
1435 /* Number of lines per page or UINT_MAX if paging is disabled. */
1436 static unsigned int lines_per_page
;
1437 /* Number of chars per line or UINT_MAX if line folding is disabled. */
1438 static unsigned int chars_per_line
;
1439 /* Current count of lines printed on this page, chars on this line. */
1440 static unsigned int lines_printed
, chars_printed
;
1442 /* Buffer and start column of buffered text, for doing smarter word-
1443 wrapping. When someone calls wrap_here(), we start buffering output
1444 that comes through fputs_filtered(). If we see a newline, we just
1445 spit it out and forget about the wrap_here(). If we see another
1446 wrap_here(), we spit it out and remember the newer one. If we see
1447 the end of the line, we spit out a newline, the indent, and then
1448 the buffered output. */
1450 /* Malloc'd buffer with chars_per_line+2 bytes. Contains characters which
1451 are waiting to be output (they have already been counted in chars_printed).
1452 When wrap_buffer[0] is null, the buffer is empty. */
1453 static char *wrap_buffer
;
1455 /* Pointer in wrap_buffer to the next character to fill. */
1456 static char *wrap_pointer
;
1458 /* String to indent by if the wrap occurs. Must not be NULL if wrap_column
1460 static char *wrap_indent
;
1462 /* Column number on the screen where wrap_buffer begins, or 0 if wrapping
1463 is not in effect. */
1464 static int wrap_column
;
1467 /* Inialize the lines and chars per page */
1469 init_page_info (void)
1472 if (!tui_get_command_dimension (&chars_per_line
, &lines_per_page
))
1475 /* These defaults will be used if we are unable to get the correct
1476 values from termcap. */
1477 #if defined(__GO32__)
1478 lines_per_page
= ScreenRows ();
1479 chars_per_line
= ScreenCols ();
1481 lines_per_page
= 24;
1482 chars_per_line
= 80;
1484 #if !defined (_WIN32)
1485 /* No termcap under MPW, although might be cool to do something
1486 by looking at worksheet or console window sizes. */
1487 /* Initialize the screen height and width from termcap. */
1489 char *termtype
= getenv ("TERM");
1491 /* Positive means success, nonpositive means failure. */
1494 /* 2048 is large enough for all known terminals, according to the
1495 GNU termcap manual. */
1496 char term_buffer
[2048];
1500 status
= tgetent (term_buffer
, termtype
);
1504 int running_in_emacs
= getenv ("EMACS") != NULL
;
1506 val
= tgetnum ("li");
1507 if (val
>= 0 && !running_in_emacs
)
1508 lines_per_page
= val
;
1510 /* The number of lines per page is not mentioned
1511 in the terminal description. This probably means
1512 that paging is not useful (e.g. emacs shell window),
1513 so disable paging. */
1514 lines_per_page
= UINT_MAX
;
1516 val
= tgetnum ("co");
1518 chars_per_line
= val
;
1524 #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER)
1526 /* If there is a better way to determine the window size, use it. */
1527 SIGWINCH_HANDLER (SIGWINCH
);
1530 /* If the output is not a terminal, don't paginate it. */
1531 if (!ui_file_isatty (gdb_stdout
))
1532 lines_per_page
= UINT_MAX
;
1533 } /* the command_line_version */
1540 if (chars_per_line
== 0)
1545 wrap_buffer
= (char *) xmalloc (chars_per_line
+ 2);
1546 wrap_buffer
[0] = '\0';
1549 wrap_buffer
= (char *) xrealloc (wrap_buffer
, chars_per_line
+ 2);
1550 wrap_pointer
= wrap_buffer
; /* Start it at the beginning */
1555 set_width_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
1560 /* Wait, so the user can read what's on the screen. Prompt the user
1561 to continue by pressing RETURN. */
1564 prompt_for_continue (void)
1567 char cont_prompt
[120];
1569 if (annotation_level
> 1)
1570 printf_unfiltered ("\n\032\032pre-prompt-for-continue\n");
1572 strcpy (cont_prompt
,
1573 "---Type <return> to continue, or q <return> to quit---");
1574 if (annotation_level
> 1)
1575 strcat (cont_prompt
, "\n\032\032prompt-for-continue\n");
1577 /* We must do this *before* we call gdb_readline, else it will eventually
1578 call us -- thinking that we're trying to print beyond the end of the
1580 reinitialize_more_filter ();
1583 /* On a real operating system, the user can quit with SIGINT.
1586 'q' is provided on all systems so users don't have to change habits
1587 from system to system, and because telling them what to do in
1588 the prompt is more user-friendly than expecting them to think of
1590 /* Call readline, not gdb_readline, because GO32 readline handles control-C
1591 whereas control-C to gdb_readline will cause the user to get dumped
1593 ignore
= readline (cont_prompt
);
1595 if (annotation_level
> 1)
1596 printf_unfiltered ("\n\032\032post-prompt-for-continue\n");
1601 while (*p
== ' ' || *p
== '\t')
1606 request_quit (SIGINT
);
1608 async_request_quit (0);
1614 /* Now we have to do this again, so that GDB will know that it doesn't
1615 need to save the ---Type <return>--- line at the top of the screen. */
1616 reinitialize_more_filter ();
1618 dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */
1621 /* Reinitialize filter; ie. tell it to reset to original values. */
1624 reinitialize_more_filter (void)
1630 /* Indicate that if the next sequence of characters overflows the line,
1631 a newline should be inserted here rather than when it hits the end.
1632 If INDENT is non-null, it is a string to be printed to indent the
1633 wrapped part on the next line. INDENT must remain accessible until
1634 the next call to wrap_here() or until a newline is printed through
1637 If the line is already overfull, we immediately print a newline and
1638 the indentation, and disable further wrapping.
1640 If we don't know the width of lines, but we know the page height,
1641 we must not wrap words, but should still keep track of newlines
1642 that were explicitly printed.
1644 INDENT should not contain tabs, as that will mess up the char count
1645 on the next line. FIXME.
1647 This routine is guaranteed to force out any output which has been
1648 squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be
1649 used to force out output from the wrap_buffer. */
1652 wrap_here (char *indent
)
1654 /* This should have been allocated, but be paranoid anyway. */
1656 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
1660 *wrap_pointer
= '\0';
1661 fputs_unfiltered (wrap_buffer
, gdb_stdout
);
1663 wrap_pointer
= wrap_buffer
;
1664 wrap_buffer
[0] = '\0';
1665 if (chars_per_line
== UINT_MAX
) /* No line overflow checking */
1669 else if (chars_printed
>= chars_per_line
)
1671 puts_filtered ("\n");
1673 puts_filtered (indent
);
1678 wrap_column
= chars_printed
;
1682 wrap_indent
= indent
;
1686 /* Ensure that whatever gets printed next, using the filtered output
1687 commands, starts at the beginning of the line. I.E. if there is
1688 any pending output for the current line, flush it and start a new
1689 line. Otherwise do nothing. */
1694 if (chars_printed
> 0)
1696 puts_filtered ("\n");
1701 /* Like fputs but if FILTER is true, pause after every screenful.
1703 Regardless of FILTER can wrap at points other than the final
1704 character of a line.
1706 Unlike fputs, fputs_maybe_filtered does not return a value.
1707 It is OK for LINEBUFFER to be NULL, in which case just don't print
1710 Note that a longjmp to top level may occur in this routine (only if
1711 FILTER is true) (since prompt_for_continue may do so) so this
1712 routine should not be called when cleanups are not in place. */
1715 fputs_maybe_filtered (const char *linebuffer
, struct ui_file
*stream
,
1718 const char *lineptr
;
1720 if (linebuffer
== 0)
1723 /* Don't do any filtering if it is disabled. */
1724 if ((stream
!= gdb_stdout
) || !pagination_enabled
1725 || (lines_per_page
== UINT_MAX
&& chars_per_line
== UINT_MAX
))
1727 fputs_unfiltered (linebuffer
, stream
);
1731 /* Go through and output each character. Show line extension
1732 when this is necessary; prompt user for new page when this is
1735 lineptr
= linebuffer
;
1738 /* Possible new page. */
1740 (lines_printed
>= lines_per_page
- 1))
1741 prompt_for_continue ();
1743 while (*lineptr
&& *lineptr
!= '\n')
1745 /* Print a single line. */
1746 if (*lineptr
== '\t')
1749 *wrap_pointer
++ = '\t';
1751 fputc_unfiltered ('\t', stream
);
1752 /* Shifting right by 3 produces the number of tab stops
1753 we have already passed, and then adding one and
1754 shifting left 3 advances to the next tab stop. */
1755 chars_printed
= ((chars_printed
>> 3) + 1) << 3;
1761 *wrap_pointer
++ = *lineptr
;
1763 fputc_unfiltered (*lineptr
, stream
);
1768 if (chars_printed
>= chars_per_line
)
1770 unsigned int save_chars
= chars_printed
;
1774 /* If we aren't actually wrapping, don't output newline --
1775 if chars_per_line is right, we probably just overflowed
1776 anyway; if it's wrong, let us keep going. */
1778 fputc_unfiltered ('\n', stream
);
1780 /* Possible new page. */
1781 if (lines_printed
>= lines_per_page
- 1)
1782 prompt_for_continue ();
1784 /* Now output indentation and wrapped string */
1787 fputs_unfiltered (wrap_indent
, stream
);
1788 *wrap_pointer
= '\0'; /* Null-terminate saved stuff */
1789 fputs_unfiltered (wrap_buffer
, stream
); /* and eject it */
1790 /* FIXME, this strlen is what prevents wrap_indent from
1791 containing tabs. However, if we recurse to print it
1792 and count its chars, we risk trouble if wrap_indent is
1793 longer than (the user settable) chars_per_line.
1794 Note also that this can set chars_printed > chars_per_line
1795 if we are printing a long string. */
1796 chars_printed
= strlen (wrap_indent
)
1797 + (save_chars
- wrap_column
);
1798 wrap_pointer
= wrap_buffer
; /* Reset buffer */
1799 wrap_buffer
[0] = '\0';
1800 wrap_column
= 0; /* And disable fancy wrap */
1805 if (*lineptr
== '\n')
1808 wrap_here ((char *) 0); /* Spit out chars, cancel further wraps */
1810 fputc_unfiltered ('\n', stream
);
1817 fputs_filtered (const char *linebuffer
, struct ui_file
*stream
)
1819 fputs_maybe_filtered (linebuffer
, stream
, 1);
1823 putchar_unfiltered (int c
)
1826 ui_file_write (gdb_stdout
, &buf
, 1);
1830 /* Write character C to gdb_stdout using GDB's paging mechanism and return C.
1831 May return nonlocally. */
1834 putchar_filtered (int c
)
1836 return fputc_filtered (c
, gdb_stdout
);
1840 fputc_unfiltered (int c
, struct ui_file
*stream
)
1843 ui_file_write (stream
, &buf
, 1);
1848 fputc_filtered (int c
, struct ui_file
*stream
)
1854 fputs_filtered (buf
, stream
);
1858 /* puts_debug is like fputs_unfiltered, except it prints special
1859 characters in printable fashion. */
1862 puts_debug (char *prefix
, char *string
, char *suffix
)
1866 /* Print prefix and suffix after each line. */
1867 static int new_line
= 1;
1868 static int return_p
= 0;
1869 static char *prev_prefix
= "";
1870 static char *prev_suffix
= "";
1872 if (*string
== '\n')
1875 /* If the prefix is changing, print the previous suffix, a new line,
1876 and the new prefix. */
1877 if ((return_p
|| (strcmp (prev_prefix
, prefix
) != 0)) && !new_line
)
1879 fputs_unfiltered (prev_suffix
, gdb_stdlog
);
1880 fputs_unfiltered ("\n", gdb_stdlog
);
1881 fputs_unfiltered (prefix
, gdb_stdlog
);
1884 /* Print prefix if we printed a newline during the previous call. */
1888 fputs_unfiltered (prefix
, gdb_stdlog
);
1891 prev_prefix
= prefix
;
1892 prev_suffix
= suffix
;
1894 /* Output characters in a printable format. */
1895 while ((ch
= *string
++) != '\0')
1901 fputc_unfiltered (ch
, gdb_stdlog
);
1904 fprintf_unfiltered (gdb_stdlog
, "\\x%02x", ch
& 0xff);
1908 fputs_unfiltered ("\\\\", gdb_stdlog
);
1911 fputs_unfiltered ("\\b", gdb_stdlog
);
1914 fputs_unfiltered ("\\f", gdb_stdlog
);
1918 fputs_unfiltered ("\\n", gdb_stdlog
);
1921 fputs_unfiltered ("\\r", gdb_stdlog
);
1924 fputs_unfiltered ("\\t", gdb_stdlog
);
1927 fputs_unfiltered ("\\v", gdb_stdlog
);
1931 return_p
= ch
== '\r';
1934 /* Print suffix if we printed a newline. */
1937 fputs_unfiltered (suffix
, gdb_stdlog
);
1938 fputs_unfiltered ("\n", gdb_stdlog
);
1943 /* Print a variable number of ARGS using format FORMAT. If this
1944 information is going to put the amount written (since the last call
1945 to REINITIALIZE_MORE_FILTER or the last page break) over the page size,
1946 call prompt_for_continue to get the users permision to continue.
1948 Unlike fprintf, this function does not return a value.
1950 We implement three variants, vfprintf (takes a vararg list and stream),
1951 fprintf (takes a stream to write on), and printf (the usual).
1953 Note also that a longjmp to top level may occur in this routine
1954 (since prompt_for_continue may do so) so this routine should not be
1955 called when cleanups are not in place. */
1958 vfprintf_maybe_filtered (struct ui_file
*stream
, const char *format
,
1959 va_list args
, int filter
)
1962 struct cleanup
*old_cleanups
;
1964 xvasprintf (&linebuffer
, format
, args
);
1965 old_cleanups
= make_cleanup (xfree
, linebuffer
);
1966 fputs_maybe_filtered (linebuffer
, stream
, filter
);
1967 do_cleanups (old_cleanups
);
1972 vfprintf_filtered (struct ui_file
*stream
, const char *format
, va_list args
)
1974 vfprintf_maybe_filtered (stream
, format
, args
, 1);
1978 vfprintf_unfiltered (struct ui_file
*stream
, const char *format
, va_list args
)
1981 struct cleanup
*old_cleanups
;
1983 xvasprintf (&linebuffer
, format
, args
);
1984 old_cleanups
= make_cleanup (xfree
, linebuffer
);
1985 fputs_unfiltered (linebuffer
, stream
);
1986 do_cleanups (old_cleanups
);
1990 vprintf_filtered (const char *format
, va_list args
)
1992 vfprintf_maybe_filtered (gdb_stdout
, format
, args
, 1);
1996 vprintf_unfiltered (const char *format
, va_list args
)
1998 vfprintf_unfiltered (gdb_stdout
, format
, args
);
2002 fprintf_filtered (struct ui_file
* stream
, const char *format
,...)
2005 va_start (args
, format
);
2006 vfprintf_filtered (stream
, format
, args
);
2011 fprintf_unfiltered (struct ui_file
* stream
, const char *format
,...)
2014 va_start (args
, format
);
2015 vfprintf_unfiltered (stream
, format
, args
);
2019 /* Like fprintf_filtered, but prints its result indented.
2020 Called as fprintfi_filtered (spaces, stream, format, ...); */
2023 fprintfi_filtered (int spaces
, struct ui_file
* stream
, const char *format
,...)
2026 va_start (args
, format
);
2027 print_spaces_filtered (spaces
, stream
);
2029 vfprintf_filtered (stream
, format
, args
);
2035 printf_filtered (const char *format
,...)
2038 va_start (args
, format
);
2039 vfprintf_filtered (gdb_stdout
, format
, args
);
2045 printf_unfiltered (const char *format
,...)
2048 va_start (args
, format
);
2049 vfprintf_unfiltered (gdb_stdout
, format
, args
);
2053 /* Like printf_filtered, but prints it's result indented.
2054 Called as printfi_filtered (spaces, format, ...); */
2057 printfi_filtered (int spaces
, const char *format
,...)
2060 va_start (args
, format
);
2061 print_spaces_filtered (spaces
, gdb_stdout
);
2062 vfprintf_filtered (gdb_stdout
, format
, args
);
2066 /* Easy -- but watch out!
2068 This routine is *not* a replacement for puts()! puts() appends a newline.
2069 This one doesn't, and had better not! */
2072 puts_filtered (const char *string
)
2074 fputs_filtered (string
, gdb_stdout
);
2078 puts_unfiltered (const char *string
)
2080 fputs_unfiltered (string
, gdb_stdout
);
2083 /* Return a pointer to N spaces and a null. The pointer is good
2084 until the next call to here. */
2089 static char *spaces
= 0;
2090 static int max_spaces
= -1;
2096 spaces
= (char *) xmalloc (n
+ 1);
2097 for (t
= spaces
+ n
; t
!= spaces
;)
2103 return spaces
+ max_spaces
- n
;
2106 /* Print N spaces. */
2108 print_spaces_filtered (int n
, struct ui_file
*stream
)
2110 fputs_filtered (n_spaces (n
), stream
);
2113 /* C++ demangler stuff. */
2115 /* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language
2116 LANG, using demangling args ARG_MODE, and print it filtered to STREAM.
2117 If the name is not mangled, or the language for the name is unknown, or
2118 demangling is off, the name is printed in its "raw" form. */
2121 fprintf_symbol_filtered (struct ui_file
*stream
, char *name
, enum language lang
,
2128 /* If user wants to see raw output, no problem. */
2131 fputs_filtered (name
, stream
);
2137 case language_cplus
:
2138 demangled
= cplus_demangle (name
, arg_mode
);
2141 demangled
= cplus_demangle (name
, arg_mode
| DMGL_JAVA
);
2143 case language_chill
:
2144 demangled
= chill_demangle (name
);
2150 fputs_filtered (demangled
? demangled
: name
, stream
);
2151 if (demangled
!= NULL
)
2159 /* Do a strcmp() type operation on STRING1 and STRING2, ignoring any
2160 differences in whitespace. Returns 0 if they match, non-zero if they
2161 don't (slightly different than strcmp()'s range of return values).
2163 As an extra hack, string1=="FOO(ARGS)" matches string2=="FOO".
2164 This "feature" is useful when searching for matching C++ function names
2165 (such as if the user types 'break FOO', where FOO is a mangled C++
2169 strcmp_iw (const char *string1
, const char *string2
)
2171 while ((*string1
!= '\0') && (*string2
!= '\0'))
2173 while (isspace (*string1
))
2177 while (isspace (*string2
))
2181 if (*string1
!= *string2
)
2185 if (*string1
!= '\0')
2191 return (*string1
!= '\0' && *string1
!= '(') || (*string2
!= '\0');
2197 ** Answer whether string_to_compare is a full or partial match to
2198 ** template_string. The partial match must be in sequence starting
2202 subset_compare (char *string_to_compare
, char *template_string
)
2205 if (template_string
!= (char *) NULL
&& string_to_compare
!= (char *) NULL
&&
2206 strlen (string_to_compare
) <= strlen (template_string
))
2207 match
= (strncmp (template_string
,
2209 strlen (string_to_compare
)) == 0);
2216 static void pagination_on_command (char *arg
, int from_tty
);
2218 pagination_on_command (char *arg
, int from_tty
)
2220 pagination_enabled
= 1;
2223 static void pagination_on_command (char *arg
, int from_tty
);
2225 pagination_off_command (char *arg
, int from_tty
)
2227 pagination_enabled
= 0;
2232 initialize_utils (void)
2234 struct cmd_list_element
*c
;
2236 c
= add_set_cmd ("width", class_support
, var_uinteger
,
2237 (char *) &chars_per_line
,
2238 "Set number of characters gdb thinks are in a line.",
2240 add_show_from_set (c
, &showlist
);
2241 c
->function
.sfunc
= set_width_command
;
2244 (add_set_cmd ("height", class_support
,
2245 var_uinteger
, (char *) &lines_per_page
,
2246 "Set number of lines gdb thinks are in a page.", &setlist
),
2251 /* If the output is not a terminal, don't paginate it. */
2252 if (!ui_file_isatty (gdb_stdout
))
2253 lines_per_page
= UINT_MAX
;
2255 set_width_command ((char *) NULL
, 0, c
);
2258 (add_set_cmd ("demangle", class_support
, var_boolean
,
2260 "Set demangling of encoded C++ names when displaying symbols.",
2265 (add_set_cmd ("pagination", class_support
,
2266 var_boolean
, (char *) &pagination_enabled
,
2267 "Set state of pagination.", &setlist
),
2272 add_com ("am", class_support
, pagination_on_command
,
2273 "Enable pagination");
2274 add_com ("sm", class_support
, pagination_off_command
,
2275 "Disable pagination");
2279 (add_set_cmd ("sevenbit-strings", class_support
, var_boolean
,
2280 (char *) &sevenbit_strings
,
2281 "Set printing of 8-bit characters in strings as \\nnn.",
2286 (add_set_cmd ("asm-demangle", class_support
, var_boolean
,
2287 (char *) &asm_demangle
,
2288 "Set demangling of C++ names in disassembly listings.",
2293 /* Machine specific function to handle SIGWINCH signal. */
2295 #ifdef SIGWINCH_HANDLER_BODY
2296 SIGWINCH_HANDLER_BODY
2299 /* print routines to handle variable size regs, etc. */
2301 /* temporary storage using circular buffer */
2307 static char buf
[NUMCELLS
][CELLSIZE
];
2308 static int cell
= 0;
2309 if (++cell
>= NUMCELLS
)
2317 return (TARGET_ADDR_BIT
/ 8 * 2);
2321 paddr (CORE_ADDR addr
)
2323 return phex (addr
, TARGET_ADDR_BIT
/ 8);
2327 paddr_nz (CORE_ADDR addr
)
2329 return phex_nz (addr
, TARGET_ADDR_BIT
/ 8);
2333 decimal2str (char *paddr_str
, char *sign
, ULONGEST addr
)
2335 /* steal code from valprint.c:print_decimal(). Should this worry
2336 about the real size of addr as the above does? */
2337 unsigned long temp
[3];
2341 temp
[i
] = addr
% (1000 * 1000 * 1000);
2342 addr
/= (1000 * 1000 * 1000);
2345 while (addr
!= 0 && i
< (sizeof (temp
) / sizeof (temp
[0])));
2349 sprintf (paddr_str
, "%s%lu",
2353 sprintf (paddr_str
, "%s%lu%09lu",
2354 sign
, temp
[1], temp
[0]);
2357 sprintf (paddr_str
, "%s%lu%09lu%09lu",
2358 sign
, temp
[2], temp
[1], temp
[0]);
2361 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
2366 paddr_u (CORE_ADDR addr
)
2368 char *paddr_str
= get_cell ();
2369 decimal2str (paddr_str
, "", addr
);
2374 paddr_d (LONGEST addr
)
2376 char *paddr_str
= get_cell ();
2378 decimal2str (paddr_str
, "-", -addr
);
2380 decimal2str (paddr_str
, "", addr
);
2384 /* eliminate warning from compiler on 32-bit systems */
2385 static int thirty_two
= 32;
2388 phex (ULONGEST l
, int sizeof_l
)
2395 sprintf (str
, "%08lx%08lx",
2396 (unsigned long) (l
>> thirty_two
),
2397 (unsigned long) (l
& 0xffffffff));
2401 sprintf (str
, "%08lx", (unsigned long) l
);
2405 sprintf (str
, "%04x", (unsigned short) (l
& 0xffff));
2408 str
= phex (l
, sizeof (l
));
2415 phex_nz (ULONGEST l
, int sizeof_l
)
2422 unsigned long high
= (unsigned long) (l
>> thirty_two
);
2425 sprintf (str
, "%lx", (unsigned long) (l
& 0xffffffff));
2427 sprintf (str
, "%lx%08lx",
2428 high
, (unsigned long) (l
& 0xffffffff));
2433 sprintf (str
, "%lx", (unsigned long) l
);
2437 sprintf (str
, "%x", (unsigned short) (l
& 0xffff));
2440 str
= phex_nz (l
, sizeof (l
));
2447 /* Convert to / from the hosts pointer to GDB's internal CORE_ADDR
2448 using the target's conversion routines. */
2450 host_pointer_to_address (void *ptr
)
2452 if (sizeof (ptr
) != TYPE_LENGTH (builtin_type_void_data_ptr
))
2453 internal_error (__FILE__
, __LINE__
,
2454 "core_addr_to_void_ptr: bad cast");
2455 return POINTER_TO_ADDRESS (builtin_type_void_data_ptr
, &ptr
);
2459 address_to_host_pointer (CORE_ADDR addr
)
2462 if (sizeof (ptr
) != TYPE_LENGTH (builtin_type_void_data_ptr
))
2463 internal_error (__FILE__
, __LINE__
,
2464 "core_addr_to_void_ptr: bad cast");
2465 ADDRESS_TO_POINTER (builtin_type_void_data_ptr
, &ptr
, addr
);
2469 /* Convert a CORE_ADDR into a string. */
2471 core_addr_to_string (const CORE_ADDR addr
)
2473 char *str
= get_cell ();
2475 strcat (str
, phex_nz (addr
, sizeof (addr
)));
2479 /* Convert a string back into a CORE_ADDR. */
2481 string_to_core_addr (const char *my_string
)
2484 if (my_string
[0] == '0' && tolower (my_string
[1]) == 'x')
2486 /* Assume that it is in decimal. */
2488 for (i
= 2; my_string
[i
] != '\0'; i
++)
2490 if (isdigit (my_string
[i
]))
2491 addr
= (my_string
[i
] - '0') + (addr
* 16);
2492 else if (isxdigit (my_string
[i
]))
2493 addr
= (tolower (my_string
[i
]) - 'a' + 0xa) + (addr
* 16);
2495 internal_error (__FILE__
, __LINE__
, "invalid hex");
2500 /* Assume that it is in decimal. */
2502 for (i
= 0; my_string
[i
] != '\0'; i
++)
2504 if (isdigit (my_string
[i
]))
2505 addr
= (my_string
[i
] - '0') + (addr
* 10);
2507 internal_error (__FILE__
, __LINE__
, "invalid decimal");
2514 gdb_realpath (const char *filename
)
2516 #ifdef HAVE_REALPATH
2517 #if defined (PATH_MAX)
2519 #elif defined (MAXPATHLEN)
2520 char buf
[MAXPATHLEN
];
2522 #error "Neither PATH_MAX nor MAXPATHLEN defined"
2524 char *rp
= realpath (filename
, buf
);
2525 return xstrdup (rp
? rp
: filename
);
2527 return xstrdup (filename
);