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 /* Start the printing of an error message. Way to use this is to call
597 this, output the error message (use filtered output to gdb_stderr
598 (FIXME: Some callers, like memory_error, use gdb_stdout)), ending
599 in a newline, and then call return_to_top_level (RETURN_ERROR).
600 error() provides a convenient way to do this for the special case
601 that the error message can be formatted with a single printf call,
602 but this is more general. */
606 if (error_begin_hook
)
609 target_terminal_ours ();
610 wrap_here (""); /* Force out any buffered output */
611 gdb_flush (gdb_stdout
);
613 annotate_error_begin ();
616 fprintf_filtered (gdb_stderr
, error_pre_print
);
619 /* Print an error message and return to command level.
620 The first argument STRING is the error message, used as a fprintf string,
621 and the remaining args are passed as arguments to it. */
624 verror (const char *string
, va_list args
)
627 struct cleanup
*err_string_cleanup
;
628 /* FIXME: cagney/1999-11-10: All error calls should come here.
629 Unfortunately some code uses the sequence: error_begin(); print
630 error message; return_to_top_level. That code should be
633 /* NOTE: It's tempting to just do the following...
634 vfprintf_filtered (gdb_stderr, string, args);
635 and then follow with a similar looking statement to cause the message
636 to also go to gdb_lasterr. But if we do this, we'll be traversing the
637 va_list twice which works on some platforms and fails miserably on
639 /* Save it as the last error */
640 ui_file_rewind (gdb_lasterr
);
641 vfprintf_filtered (gdb_lasterr
, string
, args
);
642 /* Retrieve the last error and print it to gdb_stderr */
643 err_string
= error_last_message ();
644 err_string_cleanup
= make_cleanup (xfree
, err_string
);
645 fputs_filtered (err_string
, gdb_stderr
);
646 fprintf_filtered (gdb_stderr
, "\n");
647 do_cleanups (err_string_cleanup
);
648 return_to_top_level (RETURN_ERROR
);
652 error (const char *string
,...)
655 va_start (args
, string
);
656 verror (string
, args
);
661 error_stream (struct ui_file
*stream
)
664 char *msg
= ui_file_xstrdup (stream
, &size
);
665 make_cleanup (xfree
, msg
);
669 /* Get the last error message issued by gdb */
672 error_last_message (void)
675 return ui_file_xstrdup (gdb_lasterr
, &len
);
678 /* This is to be called by main() at the very beginning */
683 gdb_lasterr
= mem_fileopen ();
686 /* Print a message reporting an internal error. Ask the user if they
687 want to continue, dump core, or just exit. */
690 internal_verror (const char *file
, int line
,
691 const char *fmt
, va_list ap
)
693 static char msg
[] = "Internal GDB error: recursive internal error.\n";
694 static int dejavu
= 0;
698 /* don't allow infinite error recursion. */
706 fputs_unfiltered (msg
, gdb_stderr
);
707 abort (); /* NOTE: GDB has only three calls to abort(). */
710 write (STDERR_FILENO
, msg
, sizeof (msg
));
714 /* Try to get the message out */
715 target_terminal_ours ();
716 fprintf_unfiltered (gdb_stderr
, "%s:%d: gdb-internal-error: ", file
, line
);
717 vfprintf_unfiltered (gdb_stderr
, fmt
, ap
);
718 fputs_unfiltered ("\n", gdb_stderr
);
720 /* Default (yes/batch case) is to quit GDB. When in batch mode this
721 lessens the likelhood of GDB going into an infinate loop. */
723 An internal GDB error was detected. This may make further\n\
724 debugging unreliable. Quit this debugging session? ");
726 /* Default (yes/batch case) is to dump core. This leaves a GDB
727 dropping so that it is easier to see that something went wrong to
729 dump_core_p
= query ("\
730 Create a core file containing the current state of GDB? ");
735 abort (); /* NOTE: GDB has only three calls to abort(). */
744 abort (); /* NOTE: GDB has only three calls to abort(). */
749 return_to_top_level (RETURN_ERROR
);
753 internal_error (const char *file
, int line
, const char *string
, ...)
756 va_start (ap
, string
);
758 internal_verror (file
, line
, string
, ap
);
762 /* The strerror() function can return NULL for errno values that are
763 out of range. Provide a "safe" version that always returns a
767 safe_strerror (int errnum
)
772 if ((msg
= strerror (errnum
)) == NULL
)
774 sprintf (buf
, "(undocumented errno %d)", errnum
);
780 /* Print the system error message for errno, and also mention STRING
781 as the file name for which the error was encountered.
782 Then return to command level. */
785 perror_with_name (char *string
)
790 err
= safe_strerror (errno
);
791 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
792 strcpy (combined
, string
);
793 strcat (combined
, ": ");
794 strcat (combined
, err
);
796 /* I understand setting these is a matter of taste. Still, some people
797 may clear errno but not know about bfd_error. Doing this here is not
799 bfd_set_error (bfd_error_no_error
);
802 error ("%s.", combined
);
805 /* Print the system error message for ERRCODE, and also mention STRING
806 as the file name for which the error was encountered. */
809 print_sys_errmsg (char *string
, int errcode
)
814 err
= safe_strerror (errcode
);
815 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
816 strcpy (combined
, string
);
817 strcat (combined
, ": ");
818 strcat (combined
, err
);
820 /* We want anything which was printed on stdout to come out first, before
822 gdb_flush (gdb_stdout
);
823 fprintf_unfiltered (gdb_stderr
, "%s.\n", combined
);
826 /* Control C eventually causes this to be called, at a convenient time. */
831 struct serial
*gdb_stdout_serial
= serial_fdopen (1);
833 target_terminal_ours ();
835 /* We want all output to appear now, before we print "Quit". We
836 have 3 levels of buffering we have to flush (it's possible that
837 some of these should be changed to flush the lower-level ones
840 /* 1. The _filtered buffer. */
841 wrap_here ((char *) 0);
843 /* 2. The stdio buffer. */
844 gdb_flush (gdb_stdout
);
845 gdb_flush (gdb_stderr
);
847 /* 3. The system-level buffer. */
848 serial_drain_output (gdb_stdout_serial
);
849 serial_un_fdopen (gdb_stdout_serial
);
851 annotate_error_begin ();
853 /* Don't use *_filtered; we don't want to prompt the user to continue. */
855 fprintf_unfiltered (gdb_stderr
, quit_pre_print
);
858 /* No steenking SIGINT will ever be coming our way when the
859 program is resumed. Don't lie. */
860 fprintf_unfiltered (gdb_stderr
, "Quit\n");
863 /* If there is no terminal switching for this target, then we can't
864 possibly get screwed by the lack of job control. */
865 || current_target
.to_terminal_ours
== NULL
)
866 fprintf_unfiltered (gdb_stderr
, "Quit\n");
868 fprintf_unfiltered (gdb_stderr
,
869 "Quit (expect signal SIGINT when the program is resumed)\n");
871 return_to_top_level (RETURN_QUIT
);
874 /* Control C comes here */
876 request_quit (int signo
)
879 /* Restore the signal handler. Harmless with BSD-style signals, needed
880 for System V-style signals. So just always do it, rather than worrying
881 about USG defines and stuff like that. */
882 signal (signo
, request_quit
);
892 /* Memory management stuff (malloc friends). */
894 #if !defined (USE_MMALLOC)
896 /* NOTE: These must use PTR so that their definition matches the
897 declaration found in "mmalloc.h". */
900 mmalloc (void *md
, size_t size
)
902 return malloc (size
); /* NOTE: GDB's only call to malloc() */
906 mrealloc (void *md
, void *ptr
, size_t size
)
908 if (ptr
== 0) /* Guard against old realloc's */
909 return mmalloc (md
, size
);
911 return realloc (ptr
, size
); /* NOTE: GDB's only call to ralloc() */
915 mcalloc (void *md
, size_t number
, size_t size
)
917 return calloc (number
, size
); /* NOTE: GDB's only call to calloc() */
921 mfree (void *md
, void *ptr
)
923 free (ptr
); /* NOTE: GDB's only call to free() */
926 #endif /* USE_MMALLOC */
928 #if !defined (USE_MMALLOC) || defined (NO_MMCHECK)
931 init_malloc (void *md
)
935 #else /* Have mmalloc and want corruption checking */
940 fprintf_unfiltered (gdb_stderr
, "Memory corruption\n");
941 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
944 /* Attempt to install hooks in mmalloc/mrealloc/mfree for the heap specified
945 by MD, to detect memory corruption. Note that MD may be NULL to specify
946 the default heap that grows via sbrk.
948 Note that for freshly created regions, we must call mmcheckf prior to any
949 mallocs in the region. Otherwise, any region which was allocated prior to
950 installing the checking hooks, which is later reallocated or freed, will
951 fail the checks! The mmcheck function only allows initial hooks to be
952 installed before the first mmalloc. However, anytime after we have called
953 mmcheck the first time to install the checking hooks, we can call it again
954 to update the function pointer to the memory corruption handler.
956 Returns zero on failure, non-zero on success. */
958 #ifndef MMCHECK_FORCE
959 #define MMCHECK_FORCE 0
963 init_malloc (void *md
)
965 if (!mmcheckf (md
, malloc_botch
, MMCHECK_FORCE
))
967 /* Don't use warning(), which relies on current_target being set
968 to something other than dummy_target, until after
969 initialize_all_files(). */
972 (gdb_stderr
, "warning: failed to install memory consistency checks; ");
974 (gdb_stderr
, "configuration should define NO_MMCHECK or MMCHECK_FORCE\n");
980 #endif /* Have mmalloc and want corruption checking */
982 /* Called when a memory allocation fails, with the number of bytes of
983 memory requested in SIZE. */
990 internal_error (__FILE__
, __LINE__
,
991 "virtual memory exhausted: can't allocate %ld bytes.", size
);
995 internal_error (__FILE__
, __LINE__
,
996 "virtual memory exhausted.");
1000 /* The xmmalloc() family of memory management routines.
1002 These are are like the mmalloc() family except that they implement
1003 consistent semantics and guard against typical memory management
1004 problems: if a malloc fails, an internal error is thrown; if
1005 free(NULL) is called, it is ignored; if *alloc(0) is called, NULL
1008 All these routines are implemented using the mmalloc() family. */
1011 xmmalloc (void *md
, size_t size
)
1021 val
= mmalloc (md
, size
);
1029 xmrealloc (void *md
, void *ptr
, size_t size
)
1043 val
= mrealloc (md
, ptr
, size
);
1047 val
= mmalloc (md
, size
);
1058 xmcalloc (void *md
, size_t number
, size_t size
)
1061 if (number
== 0 || size
== 0)
1065 mem
= mcalloc (md
, number
, size
);
1067 nomem (number
* size
);
1073 xmfree (void *md
, void *ptr
)
1079 /* The xmalloc() (libiberty.h) family of memory management routines.
1081 These are like the ISO-C malloc() family except that they implement
1082 consistent semantics and guard against typical memory management
1083 problems. See xmmalloc() above for further information.
1085 All these routines are wrappers to the xmmalloc() family. */
1087 /* NOTE: These are declared using PTR to ensure consistency with
1088 "libiberty.h". xfree() is GDB local. */
1091 xmalloc (size_t size
)
1093 return xmmalloc (NULL
, size
);
1097 xrealloc (PTR ptr
, size_t size
)
1099 return xmrealloc (NULL
, ptr
, size
);
1103 xcalloc (size_t number
, size_t size
)
1105 return xmcalloc (NULL
, number
, size
);
1115 /* Like asprintf/vasprintf but get an internal_error if the call
1119 xasprintf (char **ret
, const char *format
, ...)
1122 va_start (args
, format
);
1123 xvasprintf (ret
, format
, args
);
1128 xvasprintf (char **ret
, const char *format
, va_list ap
)
1130 int status
= vasprintf (ret
, format
, ap
);
1131 /* NULL could be returned due to a memory allocation problem; a
1132 badly format string; or something else. */
1134 internal_error (__FILE__
, __LINE__
,
1135 "vasprintf returned NULL buffer (errno %d)",
1137 /* A negative status with a non-NULL buffer shouldn't never
1138 happen. But to be sure. */
1140 internal_error (__FILE__
, __LINE__
,
1141 "vasprintf call failed (errno %d)",
1146 /* My replacement for the read system call.
1147 Used like `read' but keeps going if `read' returns too soon. */
1150 myread (int desc
, char *addr
, int len
)
1157 val
= read (desc
, addr
, len
);
1161 return orglen
- len
;
1168 /* Make a copy of the string at PTR with SIZE characters
1169 (and add a null character at the end in the copy).
1170 Uses malloc to get the space. Returns the address of the copy. */
1173 savestring (const char *ptr
, size_t size
)
1175 register char *p
= (char *) xmalloc (size
+ 1);
1176 memcpy (p
, ptr
, size
);
1182 msavestring (void *md
, const char *ptr
, size_t size
)
1184 register char *p
= (char *) xmmalloc (md
, size
+ 1);
1185 memcpy (p
, ptr
, size
);
1191 mstrsave (void *md
, const char *ptr
)
1193 return (msavestring (md
, ptr
, strlen (ptr
)));
1197 print_spaces (register int n
, register struct ui_file
*file
)
1199 fputs_unfiltered (n_spaces (n
), file
);
1202 /* Print a host address. */
1205 gdb_print_host_address (void *addr
, struct ui_file
*stream
)
1208 /* We could use the %p conversion specifier to fprintf if we had any
1209 way of knowing whether this host supports it. But the following
1210 should work on the Alpha and on 32 bit machines. */
1212 fprintf_filtered (stream
, "0x%lx", (unsigned long) addr
);
1215 /* Ask user a y-or-n question and return 1 iff answer is yes.
1216 Takes three args which are given to printf to print the question.
1217 The first, a control string, should end in "? ".
1218 It should not say how to answer, because we do that. */
1222 query (char *ctlstr
,...)
1225 register int answer
;
1229 va_start (args
, ctlstr
);
1233 return query_hook (ctlstr
, args
);
1236 /* Automatically answer "yes" if input is not from a terminal. */
1237 if (!input_from_terminal_p ())
1242 wrap_here (""); /* Flush any buffered output */
1243 gdb_flush (gdb_stdout
);
1245 if (annotation_level
> 1)
1246 printf_filtered ("\n\032\032pre-query\n");
1248 vfprintf_filtered (gdb_stdout
, ctlstr
, args
);
1249 printf_filtered ("(y or n) ");
1251 if (annotation_level
> 1)
1252 printf_filtered ("\n\032\032query\n");
1255 gdb_flush (gdb_stdout
);
1257 answer
= fgetc (stdin
);
1258 clearerr (stdin
); /* in case of C-d */
1259 if (answer
== EOF
) /* C-d */
1264 /* Eat rest of input line, to EOF or newline */
1268 ans2
= fgetc (stdin
);
1271 while (ans2
!= EOF
&& ans2
!= '\n' && ans2
!= '\r');
1285 printf_filtered ("Please answer y or n.\n");
1288 if (annotation_level
> 1)
1289 printf_filtered ("\n\032\032post-query\n");
1294 /* Parse a C escape sequence. STRING_PTR points to a variable
1295 containing a pointer to the string to parse. That pointer
1296 should point to the character after the \. That pointer
1297 is updated past the characters we use. The value of the
1298 escape sequence is returned.
1300 A negative value means the sequence \ newline was seen,
1301 which is supposed to be equivalent to nothing at all.
1303 If \ is followed by a null character, we return a negative
1304 value and leave the string pointer pointing at the null character.
1306 If \ is followed by 000, we return 0 and leave the string pointer
1307 after the zeros. A value of 0 does not mean end of string. */
1310 parse_escape (char **string_ptr
)
1312 register int c
= *(*string_ptr
)++;
1316 return 007; /* Bell (alert) char */
1319 case 'e': /* Escape character */
1337 c
= *(*string_ptr
)++;
1339 c
= parse_escape (string_ptr
);
1342 return (c
& 0200) | (c
& 037);
1353 register int i
= c
- '0';
1354 register int count
= 0;
1357 if ((c
= *(*string_ptr
)++) >= '0' && c
<= '7')
1375 /* Print the character C on STREAM as part of the contents of a literal
1376 string whose delimiter is QUOTER. Note that this routine should only
1377 be call for printing things which are independent of the language
1378 of the program being debugged. */
1381 printchar (int c
, void (*do_fputs
) (const char *, struct ui_file
*),
1382 void (*do_fprintf
) (struct ui_file
*, const char *, ...),
1383 struct ui_file
*stream
, int quoter
)
1386 c
&= 0xFF; /* Avoid sign bit follies */
1388 if (c
< 0x20 || /* Low control chars */
1389 (c
>= 0x7F && c
< 0xA0) || /* DEL, High controls */
1390 (sevenbit_strings
&& c
>= 0x80))
1391 { /* high order bit set */
1395 do_fputs ("\\n", stream
);
1398 do_fputs ("\\b", stream
);
1401 do_fputs ("\\t", stream
);
1404 do_fputs ("\\f", stream
);
1407 do_fputs ("\\r", stream
);
1410 do_fputs ("\\e", stream
);
1413 do_fputs ("\\a", stream
);
1416 do_fprintf (stream
, "\\%.3o", (unsigned int) c
);
1422 if (c
== '\\' || c
== quoter
)
1423 do_fputs ("\\", stream
);
1424 do_fprintf (stream
, "%c", c
);
1428 /* Print the character C on STREAM as part of the contents of a
1429 literal string whose delimiter is QUOTER. Note that these routines
1430 should only be call for printing things which are independent of
1431 the language of the program being debugged. */
1434 fputstr_filtered (const char *str
, int quoter
, struct ui_file
*stream
)
1437 printchar (*str
++, fputs_filtered
, fprintf_filtered
, stream
, quoter
);
1441 fputstr_unfiltered (const char *str
, int quoter
, struct ui_file
*stream
)
1444 printchar (*str
++, fputs_unfiltered
, fprintf_unfiltered
, stream
, quoter
);
1448 fputstrn_unfiltered (const char *str
, int n
, int quoter
, struct ui_file
*stream
)
1451 for (i
= 0; i
< n
; i
++)
1452 printchar (str
[i
], fputs_unfiltered
, fprintf_unfiltered
, stream
, quoter
);
1457 /* Number of lines per page or UINT_MAX if paging is disabled. */
1458 static unsigned int lines_per_page
;
1459 /* Number of chars per line or UINT_MAX if line folding is disabled. */
1460 static unsigned int chars_per_line
;
1461 /* Current count of lines printed on this page, chars on this line. */
1462 static unsigned int lines_printed
, chars_printed
;
1464 /* Buffer and start column of buffered text, for doing smarter word-
1465 wrapping. When someone calls wrap_here(), we start buffering output
1466 that comes through fputs_filtered(). If we see a newline, we just
1467 spit it out and forget about the wrap_here(). If we see another
1468 wrap_here(), we spit it out and remember the newer one. If we see
1469 the end of the line, we spit out a newline, the indent, and then
1470 the buffered output. */
1472 /* Malloc'd buffer with chars_per_line+2 bytes. Contains characters which
1473 are waiting to be output (they have already been counted in chars_printed).
1474 When wrap_buffer[0] is null, the buffer is empty. */
1475 static char *wrap_buffer
;
1477 /* Pointer in wrap_buffer to the next character to fill. */
1478 static char *wrap_pointer
;
1480 /* String to indent by if the wrap occurs. Must not be NULL if wrap_column
1482 static char *wrap_indent
;
1484 /* Column number on the screen where wrap_buffer begins, or 0 if wrapping
1485 is not in effect. */
1486 static int wrap_column
;
1489 /* Inialize the lines and chars per page */
1491 init_page_info (void)
1494 if (!tui_get_command_dimension (&chars_per_line
, &lines_per_page
))
1497 /* These defaults will be used if we are unable to get the correct
1498 values from termcap. */
1499 #if defined(__GO32__)
1500 lines_per_page
= ScreenRows ();
1501 chars_per_line
= ScreenCols ();
1503 lines_per_page
= 24;
1504 chars_per_line
= 80;
1506 #if !defined (_WIN32)
1507 /* No termcap under MPW, although might be cool to do something
1508 by looking at worksheet or console window sizes. */
1509 /* Initialize the screen height and width from termcap. */
1511 char *termtype
= getenv ("TERM");
1513 /* Positive means success, nonpositive means failure. */
1516 /* 2048 is large enough for all known terminals, according to the
1517 GNU termcap manual. */
1518 char term_buffer
[2048];
1522 status
= tgetent (term_buffer
, termtype
);
1526 int running_in_emacs
= getenv ("EMACS") != NULL
;
1528 val
= tgetnum ("li");
1529 if (val
>= 0 && !running_in_emacs
)
1530 lines_per_page
= val
;
1532 /* The number of lines per page is not mentioned
1533 in the terminal description. This probably means
1534 that paging is not useful (e.g. emacs shell window),
1535 so disable paging. */
1536 lines_per_page
= UINT_MAX
;
1538 val
= tgetnum ("co");
1540 chars_per_line
= val
;
1546 #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER)
1548 /* If there is a better way to determine the window size, use it. */
1549 SIGWINCH_HANDLER (SIGWINCH
);
1552 /* If the output is not a terminal, don't paginate it. */
1553 if (!ui_file_isatty (gdb_stdout
))
1554 lines_per_page
= UINT_MAX
;
1555 } /* the command_line_version */
1562 if (chars_per_line
== 0)
1567 wrap_buffer
= (char *) xmalloc (chars_per_line
+ 2);
1568 wrap_buffer
[0] = '\0';
1571 wrap_buffer
= (char *) xrealloc (wrap_buffer
, chars_per_line
+ 2);
1572 wrap_pointer
= wrap_buffer
; /* Start it at the beginning */
1577 set_width_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
1582 /* Wait, so the user can read what's on the screen. Prompt the user
1583 to continue by pressing RETURN. */
1586 prompt_for_continue (void)
1589 char cont_prompt
[120];
1591 if (annotation_level
> 1)
1592 printf_unfiltered ("\n\032\032pre-prompt-for-continue\n");
1594 strcpy (cont_prompt
,
1595 "---Type <return> to continue, or q <return> to quit---");
1596 if (annotation_level
> 1)
1597 strcat (cont_prompt
, "\n\032\032prompt-for-continue\n");
1599 /* We must do this *before* we call gdb_readline, else it will eventually
1600 call us -- thinking that we're trying to print beyond the end of the
1602 reinitialize_more_filter ();
1605 /* On a real operating system, the user can quit with SIGINT.
1608 'q' is provided on all systems so users don't have to change habits
1609 from system to system, and because telling them what to do in
1610 the prompt is more user-friendly than expecting them to think of
1612 /* Call readline, not gdb_readline, because GO32 readline handles control-C
1613 whereas control-C to gdb_readline will cause the user to get dumped
1615 ignore
= readline (cont_prompt
);
1617 if (annotation_level
> 1)
1618 printf_unfiltered ("\n\032\032post-prompt-for-continue\n");
1623 while (*p
== ' ' || *p
== '\t')
1628 request_quit (SIGINT
);
1630 async_request_quit (0);
1636 /* Now we have to do this again, so that GDB will know that it doesn't
1637 need to save the ---Type <return>--- line at the top of the screen. */
1638 reinitialize_more_filter ();
1640 dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */
1643 /* Reinitialize filter; ie. tell it to reset to original values. */
1646 reinitialize_more_filter (void)
1652 /* Indicate that if the next sequence of characters overflows the line,
1653 a newline should be inserted here rather than when it hits the end.
1654 If INDENT is non-null, it is a string to be printed to indent the
1655 wrapped part on the next line. INDENT must remain accessible until
1656 the next call to wrap_here() or until a newline is printed through
1659 If the line is already overfull, we immediately print a newline and
1660 the indentation, and disable further wrapping.
1662 If we don't know the width of lines, but we know the page height,
1663 we must not wrap words, but should still keep track of newlines
1664 that were explicitly printed.
1666 INDENT should not contain tabs, as that will mess up the char count
1667 on the next line. FIXME.
1669 This routine is guaranteed to force out any output which has been
1670 squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be
1671 used to force out output from the wrap_buffer. */
1674 wrap_here (char *indent
)
1676 /* This should have been allocated, but be paranoid anyway. */
1678 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
1682 *wrap_pointer
= '\0';
1683 fputs_unfiltered (wrap_buffer
, gdb_stdout
);
1685 wrap_pointer
= wrap_buffer
;
1686 wrap_buffer
[0] = '\0';
1687 if (chars_per_line
== UINT_MAX
) /* No line overflow checking */
1691 else if (chars_printed
>= chars_per_line
)
1693 puts_filtered ("\n");
1695 puts_filtered (indent
);
1700 wrap_column
= chars_printed
;
1704 wrap_indent
= indent
;
1708 /* Ensure that whatever gets printed next, using the filtered output
1709 commands, starts at the beginning of the line. I.E. if there is
1710 any pending output for the current line, flush it and start a new
1711 line. Otherwise do nothing. */
1716 if (chars_printed
> 0)
1718 puts_filtered ("\n");
1723 /* Like fputs but if FILTER is true, pause after every screenful.
1725 Regardless of FILTER can wrap at points other than the final
1726 character of a line.
1728 Unlike fputs, fputs_maybe_filtered does not return a value.
1729 It is OK for LINEBUFFER to be NULL, in which case just don't print
1732 Note that a longjmp to top level may occur in this routine (only if
1733 FILTER is true) (since prompt_for_continue may do so) so this
1734 routine should not be called when cleanups are not in place. */
1737 fputs_maybe_filtered (const char *linebuffer
, struct ui_file
*stream
,
1740 const char *lineptr
;
1742 if (linebuffer
== 0)
1745 /* Don't do any filtering if it is disabled. */
1746 if ((stream
!= gdb_stdout
) || !pagination_enabled
1747 || (lines_per_page
== UINT_MAX
&& chars_per_line
== UINT_MAX
))
1749 fputs_unfiltered (linebuffer
, stream
);
1753 /* Go through and output each character. Show line extension
1754 when this is necessary; prompt user for new page when this is
1757 lineptr
= linebuffer
;
1760 /* Possible new page. */
1762 (lines_printed
>= lines_per_page
- 1))
1763 prompt_for_continue ();
1765 while (*lineptr
&& *lineptr
!= '\n')
1767 /* Print a single line. */
1768 if (*lineptr
== '\t')
1771 *wrap_pointer
++ = '\t';
1773 fputc_unfiltered ('\t', stream
);
1774 /* Shifting right by 3 produces the number of tab stops
1775 we have already passed, and then adding one and
1776 shifting left 3 advances to the next tab stop. */
1777 chars_printed
= ((chars_printed
>> 3) + 1) << 3;
1783 *wrap_pointer
++ = *lineptr
;
1785 fputc_unfiltered (*lineptr
, stream
);
1790 if (chars_printed
>= chars_per_line
)
1792 unsigned int save_chars
= chars_printed
;
1796 /* If we aren't actually wrapping, don't output newline --
1797 if chars_per_line is right, we probably just overflowed
1798 anyway; if it's wrong, let us keep going. */
1800 fputc_unfiltered ('\n', stream
);
1802 /* Possible new page. */
1803 if (lines_printed
>= lines_per_page
- 1)
1804 prompt_for_continue ();
1806 /* Now output indentation and wrapped string */
1809 fputs_unfiltered (wrap_indent
, stream
);
1810 *wrap_pointer
= '\0'; /* Null-terminate saved stuff */
1811 fputs_unfiltered (wrap_buffer
, stream
); /* and eject it */
1812 /* FIXME, this strlen is what prevents wrap_indent from
1813 containing tabs. However, if we recurse to print it
1814 and count its chars, we risk trouble if wrap_indent is
1815 longer than (the user settable) chars_per_line.
1816 Note also that this can set chars_printed > chars_per_line
1817 if we are printing a long string. */
1818 chars_printed
= strlen (wrap_indent
)
1819 + (save_chars
- wrap_column
);
1820 wrap_pointer
= wrap_buffer
; /* Reset buffer */
1821 wrap_buffer
[0] = '\0';
1822 wrap_column
= 0; /* And disable fancy wrap */
1827 if (*lineptr
== '\n')
1830 wrap_here ((char *) 0); /* Spit out chars, cancel further wraps */
1832 fputc_unfiltered ('\n', stream
);
1839 fputs_filtered (const char *linebuffer
, struct ui_file
*stream
)
1841 fputs_maybe_filtered (linebuffer
, stream
, 1);
1845 putchar_unfiltered (int c
)
1848 ui_file_write (gdb_stdout
, &buf
, 1);
1852 /* Write character C to gdb_stdout using GDB's paging mechanism and return C.
1853 May return nonlocally. */
1856 putchar_filtered (int c
)
1858 return fputc_filtered (c
, gdb_stdout
);
1862 fputc_unfiltered (int c
, struct ui_file
*stream
)
1865 ui_file_write (stream
, &buf
, 1);
1870 fputc_filtered (int c
, struct ui_file
*stream
)
1876 fputs_filtered (buf
, stream
);
1880 /* puts_debug is like fputs_unfiltered, except it prints special
1881 characters in printable fashion. */
1884 puts_debug (char *prefix
, char *string
, char *suffix
)
1888 /* Print prefix and suffix after each line. */
1889 static int new_line
= 1;
1890 static int return_p
= 0;
1891 static char *prev_prefix
= "";
1892 static char *prev_suffix
= "";
1894 if (*string
== '\n')
1897 /* If the prefix is changing, print the previous suffix, a new line,
1898 and the new prefix. */
1899 if ((return_p
|| (strcmp (prev_prefix
, prefix
) != 0)) && !new_line
)
1901 fputs_unfiltered (prev_suffix
, gdb_stdlog
);
1902 fputs_unfiltered ("\n", gdb_stdlog
);
1903 fputs_unfiltered (prefix
, gdb_stdlog
);
1906 /* Print prefix if we printed a newline during the previous call. */
1910 fputs_unfiltered (prefix
, gdb_stdlog
);
1913 prev_prefix
= prefix
;
1914 prev_suffix
= suffix
;
1916 /* Output characters in a printable format. */
1917 while ((ch
= *string
++) != '\0')
1923 fputc_unfiltered (ch
, gdb_stdlog
);
1926 fprintf_unfiltered (gdb_stdlog
, "\\x%02x", ch
& 0xff);
1930 fputs_unfiltered ("\\\\", gdb_stdlog
);
1933 fputs_unfiltered ("\\b", gdb_stdlog
);
1936 fputs_unfiltered ("\\f", gdb_stdlog
);
1940 fputs_unfiltered ("\\n", gdb_stdlog
);
1943 fputs_unfiltered ("\\r", gdb_stdlog
);
1946 fputs_unfiltered ("\\t", gdb_stdlog
);
1949 fputs_unfiltered ("\\v", gdb_stdlog
);
1953 return_p
= ch
== '\r';
1956 /* Print suffix if we printed a newline. */
1959 fputs_unfiltered (suffix
, gdb_stdlog
);
1960 fputs_unfiltered ("\n", gdb_stdlog
);
1965 /* Print a variable number of ARGS using format FORMAT. If this
1966 information is going to put the amount written (since the last call
1967 to REINITIALIZE_MORE_FILTER or the last page break) over the page size,
1968 call prompt_for_continue to get the users permision to continue.
1970 Unlike fprintf, this function does not return a value.
1972 We implement three variants, vfprintf (takes a vararg list and stream),
1973 fprintf (takes a stream to write on), and printf (the usual).
1975 Note also that a longjmp to top level may occur in this routine
1976 (since prompt_for_continue may do so) so this routine should not be
1977 called when cleanups are not in place. */
1980 vfprintf_maybe_filtered (struct ui_file
*stream
, const char *format
,
1981 va_list args
, int filter
)
1984 struct cleanup
*old_cleanups
;
1986 xvasprintf (&linebuffer
, format
, args
);
1987 old_cleanups
= make_cleanup (xfree
, linebuffer
);
1988 fputs_maybe_filtered (linebuffer
, stream
, filter
);
1989 do_cleanups (old_cleanups
);
1994 vfprintf_filtered (struct ui_file
*stream
, const char *format
, va_list args
)
1996 vfprintf_maybe_filtered (stream
, format
, args
, 1);
2000 vfprintf_unfiltered (struct ui_file
*stream
, const char *format
, va_list args
)
2003 struct cleanup
*old_cleanups
;
2005 xvasprintf (&linebuffer
, format
, args
);
2006 old_cleanups
= make_cleanup (xfree
, linebuffer
);
2007 fputs_unfiltered (linebuffer
, stream
);
2008 do_cleanups (old_cleanups
);
2012 vprintf_filtered (const char *format
, va_list args
)
2014 vfprintf_maybe_filtered (gdb_stdout
, format
, args
, 1);
2018 vprintf_unfiltered (const char *format
, va_list args
)
2020 vfprintf_unfiltered (gdb_stdout
, format
, args
);
2024 fprintf_filtered (struct ui_file
* stream
, const char *format
,...)
2027 va_start (args
, format
);
2028 vfprintf_filtered (stream
, format
, args
);
2033 fprintf_unfiltered (struct ui_file
* stream
, const char *format
,...)
2036 va_start (args
, format
);
2037 vfprintf_unfiltered (stream
, format
, args
);
2041 /* Like fprintf_filtered, but prints its result indented.
2042 Called as fprintfi_filtered (spaces, stream, format, ...); */
2045 fprintfi_filtered (int spaces
, struct ui_file
* stream
, const char *format
,...)
2048 va_start (args
, format
);
2049 print_spaces_filtered (spaces
, stream
);
2051 vfprintf_filtered (stream
, format
, args
);
2057 printf_filtered (const char *format
,...)
2060 va_start (args
, format
);
2061 vfprintf_filtered (gdb_stdout
, format
, args
);
2067 printf_unfiltered (const char *format
,...)
2070 va_start (args
, format
);
2071 vfprintf_unfiltered (gdb_stdout
, format
, args
);
2075 /* Like printf_filtered, but prints it's result indented.
2076 Called as printfi_filtered (spaces, format, ...); */
2079 printfi_filtered (int spaces
, const char *format
,...)
2082 va_start (args
, format
);
2083 print_spaces_filtered (spaces
, gdb_stdout
);
2084 vfprintf_filtered (gdb_stdout
, format
, args
);
2088 /* Easy -- but watch out!
2090 This routine is *not* a replacement for puts()! puts() appends a newline.
2091 This one doesn't, and had better not! */
2094 puts_filtered (const char *string
)
2096 fputs_filtered (string
, gdb_stdout
);
2100 puts_unfiltered (const char *string
)
2102 fputs_unfiltered (string
, gdb_stdout
);
2105 /* Return a pointer to N spaces and a null. The pointer is good
2106 until the next call to here. */
2111 static char *spaces
= 0;
2112 static int max_spaces
= -1;
2118 spaces
= (char *) xmalloc (n
+ 1);
2119 for (t
= spaces
+ n
; t
!= spaces
;)
2125 return spaces
+ max_spaces
- n
;
2128 /* Print N spaces. */
2130 print_spaces_filtered (int n
, struct ui_file
*stream
)
2132 fputs_filtered (n_spaces (n
), stream
);
2135 /* C++ demangler stuff. */
2137 /* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language
2138 LANG, using demangling args ARG_MODE, and print it filtered to STREAM.
2139 If the name is not mangled, or the language for the name is unknown, or
2140 demangling is off, the name is printed in its "raw" form. */
2143 fprintf_symbol_filtered (struct ui_file
*stream
, char *name
, enum language lang
,
2150 /* If user wants to see raw output, no problem. */
2153 fputs_filtered (name
, stream
);
2159 case language_cplus
:
2160 demangled
= cplus_demangle (name
, arg_mode
);
2163 demangled
= cplus_demangle (name
, arg_mode
| DMGL_JAVA
);
2165 case language_chill
:
2166 demangled
= chill_demangle (name
);
2172 fputs_filtered (demangled
? demangled
: name
, stream
);
2173 if (demangled
!= NULL
)
2181 /* Do a strcmp() type operation on STRING1 and STRING2, ignoring any
2182 differences in whitespace. Returns 0 if they match, non-zero if they
2183 don't (slightly different than strcmp()'s range of return values).
2185 As an extra hack, string1=="FOO(ARGS)" matches string2=="FOO".
2186 This "feature" is useful when searching for matching C++ function names
2187 (such as if the user types 'break FOO', where FOO is a mangled C++
2191 strcmp_iw (const char *string1
, const char *string2
)
2193 while ((*string1
!= '\0') && (*string2
!= '\0'))
2195 while (isspace (*string1
))
2199 while (isspace (*string2
))
2203 if (*string1
!= *string2
)
2207 if (*string1
!= '\0')
2213 return (*string1
!= '\0' && *string1
!= '(') || (*string2
!= '\0');
2219 ** Answer whether string_to_compare is a full or partial match to
2220 ** template_string. The partial match must be in sequence starting
2224 subset_compare (char *string_to_compare
, char *template_string
)
2227 if (template_string
!= (char *) NULL
&& string_to_compare
!= (char *) NULL
&&
2228 strlen (string_to_compare
) <= strlen (template_string
))
2229 match
= (strncmp (template_string
,
2231 strlen (string_to_compare
)) == 0);
2238 static void pagination_on_command (char *arg
, int from_tty
);
2240 pagination_on_command (char *arg
, int from_tty
)
2242 pagination_enabled
= 1;
2245 static void pagination_on_command (char *arg
, int from_tty
);
2247 pagination_off_command (char *arg
, int from_tty
)
2249 pagination_enabled
= 0;
2254 initialize_utils (void)
2256 struct cmd_list_element
*c
;
2258 c
= add_set_cmd ("width", class_support
, var_uinteger
,
2259 (char *) &chars_per_line
,
2260 "Set number of characters gdb thinks are in a line.",
2262 add_show_from_set (c
, &showlist
);
2263 c
->function
.sfunc
= set_width_command
;
2266 (add_set_cmd ("height", class_support
,
2267 var_uinteger
, (char *) &lines_per_page
,
2268 "Set number of lines gdb thinks are in a page.", &setlist
),
2273 /* If the output is not a terminal, don't paginate it. */
2274 if (!ui_file_isatty (gdb_stdout
))
2275 lines_per_page
= UINT_MAX
;
2277 set_width_command ((char *) NULL
, 0, c
);
2280 (add_set_cmd ("demangle", class_support
, var_boolean
,
2282 "Set demangling of encoded C++ names when displaying symbols.",
2287 (add_set_cmd ("pagination", class_support
,
2288 var_boolean
, (char *) &pagination_enabled
,
2289 "Set state of pagination.", &setlist
),
2294 add_com ("am", class_support
, pagination_on_command
,
2295 "Enable pagination");
2296 add_com ("sm", class_support
, pagination_off_command
,
2297 "Disable pagination");
2301 (add_set_cmd ("sevenbit-strings", class_support
, var_boolean
,
2302 (char *) &sevenbit_strings
,
2303 "Set printing of 8-bit characters in strings as \\nnn.",
2308 (add_set_cmd ("asm-demangle", class_support
, var_boolean
,
2309 (char *) &asm_demangle
,
2310 "Set demangling of C++ names in disassembly listings.",
2315 /* Machine specific function to handle SIGWINCH signal. */
2317 #ifdef SIGWINCH_HANDLER_BODY
2318 SIGWINCH_HANDLER_BODY
2321 /* print routines to handle variable size regs, etc. */
2323 /* temporary storage using circular buffer */
2329 static char buf
[NUMCELLS
][CELLSIZE
];
2330 static int cell
= 0;
2331 if (++cell
>= NUMCELLS
)
2339 return (TARGET_ADDR_BIT
/ 8 * 2);
2343 paddr (CORE_ADDR addr
)
2345 return phex (addr
, TARGET_ADDR_BIT
/ 8);
2349 paddr_nz (CORE_ADDR addr
)
2351 return phex_nz (addr
, TARGET_ADDR_BIT
/ 8);
2355 decimal2str (char *paddr_str
, char *sign
, ULONGEST addr
)
2357 /* steal code from valprint.c:print_decimal(). Should this worry
2358 about the real size of addr as the above does? */
2359 unsigned long temp
[3];
2363 temp
[i
] = addr
% (1000 * 1000 * 1000);
2364 addr
/= (1000 * 1000 * 1000);
2367 while (addr
!= 0 && i
< (sizeof (temp
) / sizeof (temp
[0])));
2371 sprintf (paddr_str
, "%s%lu",
2375 sprintf (paddr_str
, "%s%lu%09lu",
2376 sign
, temp
[1], temp
[0]);
2379 sprintf (paddr_str
, "%s%lu%09lu%09lu",
2380 sign
, temp
[2], temp
[1], temp
[0]);
2383 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
2388 paddr_u (CORE_ADDR addr
)
2390 char *paddr_str
= get_cell ();
2391 decimal2str (paddr_str
, "", addr
);
2396 paddr_d (LONGEST addr
)
2398 char *paddr_str
= get_cell ();
2400 decimal2str (paddr_str
, "-", -addr
);
2402 decimal2str (paddr_str
, "", addr
);
2406 /* eliminate warning from compiler on 32-bit systems */
2407 static int thirty_two
= 32;
2410 phex (ULONGEST l
, int sizeof_l
)
2417 sprintf (str
, "%08lx%08lx",
2418 (unsigned long) (l
>> thirty_two
),
2419 (unsigned long) (l
& 0xffffffff));
2423 sprintf (str
, "%08lx", (unsigned long) l
);
2427 sprintf (str
, "%04x", (unsigned short) (l
& 0xffff));
2430 str
= phex (l
, sizeof (l
));
2437 phex_nz (ULONGEST l
, int sizeof_l
)
2444 unsigned long high
= (unsigned long) (l
>> thirty_two
);
2447 sprintf (str
, "%lx", (unsigned long) (l
& 0xffffffff));
2449 sprintf (str
, "%lx%08lx",
2450 high
, (unsigned long) (l
& 0xffffffff));
2455 sprintf (str
, "%lx", (unsigned long) l
);
2459 sprintf (str
, "%x", (unsigned short) (l
& 0xffff));
2462 str
= phex_nz (l
, sizeof (l
));
2469 /* Convert to / from the hosts pointer to GDB's internal CORE_ADDR
2470 using the target's conversion routines. */
2472 host_pointer_to_address (void *ptr
)
2474 if (sizeof (ptr
) != TYPE_LENGTH (builtin_type_void_data_ptr
))
2475 internal_error (__FILE__
, __LINE__
,
2476 "core_addr_to_void_ptr: bad cast");
2477 return POINTER_TO_ADDRESS (builtin_type_void_data_ptr
, &ptr
);
2481 address_to_host_pointer (CORE_ADDR addr
)
2484 if (sizeof (ptr
) != TYPE_LENGTH (builtin_type_void_data_ptr
))
2485 internal_error (__FILE__
, __LINE__
,
2486 "core_addr_to_void_ptr: bad cast");
2487 ADDRESS_TO_POINTER (builtin_type_void_data_ptr
, &ptr
, addr
);
2491 /* Convert a CORE_ADDR into a string. */
2493 core_addr_to_string (const CORE_ADDR addr
)
2495 char *str
= get_cell ();
2497 strcat (str
, phex_nz (addr
, sizeof (addr
)));
2501 /* Convert a string back into a CORE_ADDR. */
2503 string_to_core_addr (const char *my_string
)
2506 if (my_string
[0] == '0' && tolower (my_string
[1]) == 'x')
2508 /* Assume that it is in decimal. */
2510 for (i
= 2; my_string
[i
] != '\0'; i
++)
2512 if (isdigit (my_string
[i
]))
2513 addr
= (my_string
[i
] - '0') + (addr
* 16);
2514 else if (isxdigit (my_string
[i
]))
2515 addr
= (tolower (my_string
[i
]) - 'a' + 0xa) + (addr
* 16);
2517 internal_error (__FILE__
, __LINE__
, "invalid hex");
2522 /* Assume that it is in decimal. */
2524 for (i
= 0; my_string
[i
] != '\0'; i
++)
2526 if (isdigit (my_string
[i
]))
2527 addr
= (my_string
[i
] - '0') + (addr
* 10);
2529 internal_error (__FILE__
, __LINE__
, "invalid decimal");
2536 gdb_realpath (const char *filename
)
2538 #ifdef HAVE_REALPATH
2539 #if defined (PATH_MAX)
2541 #elif defined (MAXPATHLEN)
2542 char buf
[MAXPATHLEN
];
2544 #error "Neither PATH_MAX nor MAXPATHLEN defined"
2546 char *rp
= realpath (filename
, buf
);
2547 return xstrdup (rp
? rp
: filename
);
2549 return xstrdup (filename
);