1 /* General utility routines for GDB, the GNU debugger.
2 Copyright 1986, 1989, 1990-1992, 1995, 1996, 1998, 2000
3 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
24 #include "gdb_string.h"
25 #include "event-top.h"
38 /* SunOS's curses.h has a '#define reg register' in it. Thank you Sun. */
49 #include "expression.h"
53 #include <readline/readline.h>
56 #define XMALLOC(TYPE) ((TYPE*) xmalloc (sizeof (TYPE)))
58 /* readline defines this. */
61 void (*error_begin_hook
) PARAMS ((void));
63 /* Holds the last error message issued by gdb */
65 static struct ui_file
*gdb_lasterr
;
67 /* Prototypes for local functions */
69 static void vfprintf_maybe_filtered (struct ui_file
*, const char *,
72 static void fputs_maybe_filtered (const char *, struct ui_file
*, int);
74 #if defined (USE_MMALLOC) && !defined (NO_MMCHECK)
75 static void malloc_botch
PARAMS ((void));
79 prompt_for_continue
PARAMS ((void));
82 set_width_command
PARAMS ((char *, int, struct cmd_list_element
*));
85 set_width
PARAMS ((void));
87 /* Chain of cleanup actions established with make_cleanup,
88 to be executed if an error happens. */
90 static struct cleanup
*cleanup_chain
; /* cleaned up after a failed command */
91 static struct cleanup
*final_cleanup_chain
; /* cleaned up when gdb exits */
92 static struct cleanup
*run_cleanup_chain
; /* cleaned up on each 'run' */
93 static struct cleanup
*exec_cleanup_chain
; /* cleaned up on each execution command */
94 /* cleaned up on each error from within an execution command */
95 static struct cleanup
*exec_error_cleanup_chain
;
97 /* Pointer to what is left to do for an execution command after the
98 target stops. Used only in asynchronous mode, by targets that
99 support async execution. The finish and until commands use it. So
100 does the target extended-remote command. */
101 struct continuation
*cmd_continuation
;
102 struct continuation
*intermediate_continuation
;
104 /* Nonzero if we have job control. */
108 /* Nonzero means a quit has been requested. */
112 /* Nonzero means quit immediately if Control-C is typed now, rather
113 than waiting until QUIT is executed. Be careful in setting this;
114 code which executes with immediate_quit set has to be very careful
115 about being able to deal with being interrupted at any time. It is
116 almost always better to use QUIT; the only exception I can think of
117 is being able to quit out of a system call (using EINTR loses if
118 the SIGINT happens between the previous QUIT and the system call).
119 To immediately quit in the case in which a SIGINT happens between
120 the previous QUIT and setting immediate_quit (desirable anytime we
121 expect to block), call QUIT after setting immediate_quit. */
125 /* Nonzero means that encoded C++ names should be printed out in their
126 C++ form rather than raw. */
130 /* Nonzero means that encoded C++ names should be printed out in their
131 C++ form even in assembler language displays. If this is set, but
132 DEMANGLE is zero, names are printed raw, i.e. DEMANGLE controls. */
134 int asm_demangle
= 0;
136 /* Nonzero means that strings with character values >0x7F should be printed
137 as octal escapes. Zero means just print the value (e.g. it's an
138 international character, and the terminal or window can cope.) */
140 int sevenbit_strings
= 0;
142 /* String to be printed before error messages, if any. */
144 char *error_pre_print
;
146 /* String to be printed before quit messages, if any. */
148 char *quit_pre_print
;
150 /* String to be printed before warning messages, if any. */
152 char *warning_pre_print
= "\nwarning: ";
154 int pagination_enabled
= 1;
157 /* Add a new cleanup to the cleanup_chain,
158 and return the previous chain pointer
159 to be passed later to do_cleanups or discard_cleanups.
160 Args are FUNCTION to clean up with, and ARG to pass to it. */
163 make_cleanup (make_cleanup_ftype
*function
, void *arg
)
165 return make_my_cleanup (&cleanup_chain
, function
, arg
);
169 make_final_cleanup (make_cleanup_ftype
*function
, void *arg
)
171 return make_my_cleanup (&final_cleanup_chain
, function
, arg
);
175 make_run_cleanup (make_cleanup_ftype
*function
, void *arg
)
177 return make_my_cleanup (&run_cleanup_chain
, function
, arg
);
181 make_exec_cleanup (make_cleanup_ftype
*function
, void *arg
)
183 return make_my_cleanup (&exec_cleanup_chain
, function
, arg
);
187 make_exec_error_cleanup (make_cleanup_ftype
*function
, void *arg
)
189 return make_my_cleanup (&exec_error_cleanup_chain
, function
, arg
);
196 freeargv ((char **) arg
);
200 make_cleanup_freeargv (arg
)
203 return make_my_cleanup (&cleanup_chain
, do_freeargv
, arg
);
207 do_ui_file_delete (void *arg
)
209 ui_file_delete (arg
);
213 make_cleanup_ui_file_delete (struct ui_file
*arg
)
215 return make_my_cleanup (&cleanup_chain
, do_ui_file_delete
, arg
);
219 make_my_cleanup (struct cleanup
**pmy_chain
, make_cleanup_ftype
*function
,
222 register struct cleanup
*new
223 = (struct cleanup
*) xmalloc (sizeof (struct cleanup
));
224 register struct cleanup
*old_chain
= *pmy_chain
;
226 new->next
= *pmy_chain
;
227 new->function
= function
;
234 /* Discard cleanups and do the actions they describe
235 until we get back to the point OLD_CHAIN in the cleanup_chain. */
238 do_cleanups (old_chain
)
239 register struct cleanup
*old_chain
;
241 do_my_cleanups (&cleanup_chain
, old_chain
);
245 do_final_cleanups (old_chain
)
246 register struct cleanup
*old_chain
;
248 do_my_cleanups (&final_cleanup_chain
, old_chain
);
252 do_run_cleanups (old_chain
)
253 register struct cleanup
*old_chain
;
255 do_my_cleanups (&run_cleanup_chain
, old_chain
);
259 do_exec_cleanups (old_chain
)
260 register struct cleanup
*old_chain
;
262 do_my_cleanups (&exec_cleanup_chain
, old_chain
);
266 do_exec_error_cleanups (old_chain
)
267 register struct cleanup
*old_chain
;
269 do_my_cleanups (&exec_error_cleanup_chain
, old_chain
);
273 do_my_cleanups (pmy_chain
, old_chain
)
274 register struct cleanup
**pmy_chain
;
275 register struct cleanup
*old_chain
;
277 register struct cleanup
*ptr
;
278 while ((ptr
= *pmy_chain
) != old_chain
)
280 *pmy_chain
= ptr
->next
; /* Do this first incase recursion */
281 (*ptr
->function
) (ptr
->arg
);
286 /* Discard cleanups, not doing the actions they describe,
287 until we get back to the point OLD_CHAIN in the cleanup_chain. */
290 discard_cleanups (old_chain
)
291 register struct cleanup
*old_chain
;
293 discard_my_cleanups (&cleanup_chain
, old_chain
);
297 discard_final_cleanups (old_chain
)
298 register struct cleanup
*old_chain
;
300 discard_my_cleanups (&final_cleanup_chain
, old_chain
);
304 discard_exec_error_cleanups (old_chain
)
305 register struct cleanup
*old_chain
;
307 discard_my_cleanups (&exec_error_cleanup_chain
, old_chain
);
311 discard_my_cleanups (pmy_chain
, old_chain
)
312 register struct cleanup
**pmy_chain
;
313 register struct cleanup
*old_chain
;
315 register struct cleanup
*ptr
;
316 while ((ptr
= *pmy_chain
) != old_chain
)
318 *pmy_chain
= ptr
->next
;
323 /* Set the cleanup_chain to 0, and return the old cleanup chain. */
327 return save_my_cleanups (&cleanup_chain
);
331 save_final_cleanups ()
333 return save_my_cleanups (&final_cleanup_chain
);
337 save_my_cleanups (pmy_chain
)
338 struct cleanup
**pmy_chain
;
340 struct cleanup
*old_chain
= *pmy_chain
;
346 /* Restore the cleanup chain from a previously saved chain. */
348 restore_cleanups (chain
)
349 struct cleanup
*chain
;
351 restore_my_cleanups (&cleanup_chain
, chain
);
355 restore_final_cleanups (chain
)
356 struct cleanup
*chain
;
358 restore_my_cleanups (&final_cleanup_chain
, chain
);
362 restore_my_cleanups (pmy_chain
, chain
)
363 struct cleanup
**pmy_chain
;
364 struct cleanup
*chain
;
369 /* This function is useful for cleanups.
373 old_chain = make_cleanup (free_current_contents, &foo);
375 to arrange to free the object thus allocated. */
378 free_current_contents (location
)
384 /* Provide a known function that does nothing, to use as a base for
385 for a possibly long chain of cleanups. This is useful where we
386 use the cleanup chain for handling normal cleanups as well as dealing
387 with cleanups that need to be done as a result of a call to error().
388 In such cases, we may not be certain where the first cleanup is, unless
389 we have a do-nothing one to always use as the base. */
393 null_cleanup (void *arg
)
397 /* Add a continuation to the continuation list, the gloabl list
398 cmd_continuation. The new continuation will be added at the front.*/
400 add_continuation (continuation_hook
, arg_list
)
401 void (*continuation_hook
) PARAMS ((struct continuation_arg
*));
402 struct continuation_arg
*arg_list
;
404 struct continuation
*continuation_ptr
;
406 continuation_ptr
= (struct continuation
*) xmalloc (sizeof (struct continuation
));
407 continuation_ptr
->continuation_hook
= continuation_hook
;
408 continuation_ptr
->arg_list
= arg_list
;
409 continuation_ptr
->next
= cmd_continuation
;
410 cmd_continuation
= continuation_ptr
;
413 /* Walk down the cmd_continuation list, and execute all the
414 continuations. There is a problem though. In some cases new
415 continuations may be added while we are in the middle of this
416 loop. If this happens they will be added in the front, and done
417 before we have a chance of exhausting those that were already
418 there. We need to then save the beginning of the list in a pointer
419 and do the continuations from there on, instead of using the
420 global beginning of list as our iteration pointer.*/
422 do_all_continuations ()
424 struct continuation
*continuation_ptr
;
425 struct continuation
*saved_continuation
;
427 /* Copy the list header into another pointer, and set the global
428 list header to null, so that the global list can change as a side
429 effect of invoking the continuations and the processing of
430 the preexisting continuations will not be affected. */
431 continuation_ptr
= cmd_continuation
;
432 cmd_continuation
= NULL
;
434 /* Work now on the list we have set aside. */
435 while (continuation_ptr
)
437 (continuation_ptr
->continuation_hook
) (continuation_ptr
->arg_list
);
438 saved_continuation
= continuation_ptr
;
439 continuation_ptr
= continuation_ptr
->next
;
440 free (saved_continuation
);
444 /* Walk down the cmd_continuation list, and get rid of all the
447 discard_all_continuations ()
449 struct continuation
*continuation_ptr
;
451 while (cmd_continuation
)
453 continuation_ptr
= cmd_continuation
;
454 cmd_continuation
= continuation_ptr
->next
;
455 free (continuation_ptr
);
459 /* Add a continuation to the continuation list, the gloabl list
460 intermediate_continuation. The new continuation will be added at the front.*/
462 add_intermediate_continuation (continuation_hook
, arg_list
)
463 void (*continuation_hook
) PARAMS ((struct continuation_arg
*));
464 struct continuation_arg
*arg_list
;
466 struct continuation
*continuation_ptr
;
468 continuation_ptr
= (struct continuation
*) xmalloc (sizeof (struct continuation
));
469 continuation_ptr
->continuation_hook
= continuation_hook
;
470 continuation_ptr
->arg_list
= arg_list
;
471 continuation_ptr
->next
= intermediate_continuation
;
472 intermediate_continuation
= continuation_ptr
;
475 /* Walk down the cmd_continuation list, and execute all the
476 continuations. There is a problem though. In some cases new
477 continuations may be added while we are in the middle of this
478 loop. If this happens they will be added in the front, and done
479 before we have a chance of exhausting those that were already
480 there. We need to then save the beginning of the list in a pointer
481 and do the continuations from there on, instead of using the
482 global beginning of list as our iteration pointer.*/
484 do_all_intermediate_continuations ()
486 struct continuation
*continuation_ptr
;
487 struct continuation
*saved_continuation
;
489 /* Copy the list header into another pointer, and set the global
490 list header to null, so that the global list can change as a side
491 effect of invoking the continuations and the processing of
492 the preexisting continuations will not be affected. */
493 continuation_ptr
= intermediate_continuation
;
494 intermediate_continuation
= NULL
;
496 /* Work now on the list we have set aside. */
497 while (continuation_ptr
)
499 (continuation_ptr
->continuation_hook
) (continuation_ptr
->arg_list
);
500 saved_continuation
= continuation_ptr
;
501 continuation_ptr
= continuation_ptr
->next
;
502 free (saved_continuation
);
506 /* Walk down the cmd_continuation list, and get rid of all the
509 discard_all_intermediate_continuations ()
511 struct continuation
*continuation_ptr
;
513 while (intermediate_continuation
)
515 continuation_ptr
= intermediate_continuation
;
516 intermediate_continuation
= continuation_ptr
->next
;
517 free (continuation_ptr
);
523 /* Print a warning message. Way to use this is to call warning_begin,
524 output the warning message (use unfiltered output to gdb_stderr),
525 ending in a newline. There is not currently a warning_end that you
526 call afterwards, but such a thing might be added if it is useful
527 for a GUI to separate warning messages from other output.
529 FIXME: Why do warnings use unfiltered output and errors filtered?
530 Is this anything other than a historical accident? */
535 target_terminal_ours ();
536 wrap_here (""); /* Force out any buffered output */
537 gdb_flush (gdb_stdout
);
538 if (warning_pre_print
)
539 fprintf_unfiltered (gdb_stderr
, warning_pre_print
);
542 /* Print a warning message.
543 The first argument STRING is the warning message, used as a fprintf string,
544 and the remaining args are passed as arguments to it.
545 The primary difference between warnings and errors is that a warning
546 does not force the return to command level. */
549 warning (const char *string
,...)
552 va_start (args
, string
);
554 (*warning_hook
) (string
, args
);
558 vfprintf_unfiltered (gdb_stderr
, string
, args
);
559 fprintf_unfiltered (gdb_stderr
, "\n");
564 /* Start the printing of an error message. Way to use this is to call
565 this, output the error message (use filtered output to gdb_stderr
566 (FIXME: Some callers, like memory_error, use gdb_stdout)), ending
567 in a newline, and then call return_to_top_level (RETURN_ERROR).
568 error() provides a convenient way to do this for the special case
569 that the error message can be formatted with a single printf call,
570 but this is more general. */
574 if (error_begin_hook
)
577 target_terminal_ours ();
578 wrap_here (""); /* Force out any buffered output */
579 gdb_flush (gdb_stdout
);
581 annotate_error_begin ();
584 fprintf_filtered (gdb_stderr
, error_pre_print
);
587 /* Print an error message and return to command level.
588 The first argument STRING is the error message, used as a fprintf string,
589 and the remaining args are passed as arguments to it. */
592 verror (const char *string
, va_list args
)
595 struct cleanup
*err_string_cleanup
;
596 /* FIXME: cagney/1999-11-10: All error calls should come here.
597 Unfortunatly some code uses the sequence: error_begin(); print
598 error message; return_to_top_level. That code should be
601 /* NOTE: It's tempting to just do the following...
602 vfprintf_filtered (gdb_stderr, string, args);
603 and then follow with a similar looking statement to cause the message
604 to also go to gdb_lasterr. But if we do this, we'll be traversing the
605 va_list twice which works on some platforms and fails miserably on
607 /* Save it as the last error */
608 ui_file_rewind (gdb_lasterr
);
609 vfprintf_filtered (gdb_lasterr
, string
, args
);
610 /* Retrieve the last error and print it to gdb_stderr */
611 err_string
= error_last_message ();
612 err_string_cleanup
= make_cleanup (free
, err_string
);
613 fputs_filtered (err_string
, gdb_stderr
);
614 fprintf_filtered (gdb_stderr
, "\n");
615 do_cleanups (err_string_cleanup
);
616 return_to_top_level (RETURN_ERROR
);
620 error (const char *string
,...)
623 va_start (args
, string
);
624 verror (string
, args
);
629 error_stream (struct ui_file
*stream
)
632 char *msg
= ui_file_xstrdup (stream
, &size
);
633 make_cleanup (free
, msg
);
637 /* Get the last error message issued by gdb */
640 error_last_message (void)
643 return ui_file_xstrdup (gdb_lasterr
, &len
);
646 /* This is to be called by main() at the very beginning */
651 gdb_lasterr
= mem_fileopen ();
654 /* Print a message reporting an internal error. Ask the user if they
655 want to continue, dump core, or just exit. */
658 internal_verror (const char *fmt
, va_list ap
)
660 static char msg
[] = "Internal GDB error: recursive internal error.\n";
661 static int dejavu
= 0;
665 /* don't allow infinite error recursion. */
673 fputs_unfiltered (msg
, gdb_stderr
);
677 write (STDERR_FILENO
, msg
, sizeof (msg
));
681 /* Try to get the message out */
682 fputs_unfiltered ("gdb-internal-error: ", gdb_stderr
);
683 vfprintf_unfiltered (gdb_stderr
, fmt
, ap
);
684 fputs_unfiltered ("\n", gdb_stderr
);
686 /* Default (no case) is to quit GDB. When in batch mode this
687 lessens the likelhood of GDB going into an infinate loop. */
688 continue_p
= query ("\
689 An internal GDB error was detected. This may make make further\n\
690 debugging unreliable. Continue this debugging session? ");
692 /* Default (no case) is to not dump core. Lessen the chance of GDB
693 leaving random core files around. */
694 dump_core_p
= query ("\
695 Create a core file containing the current state of GDB? ");
714 return_to_top_level (RETURN_ERROR
);
718 internal_error (char *string
, ...)
721 va_start (ap
, string
);
722 internal_verror (string
, ap
);
726 /* The strerror() function can return NULL for errno values that are
727 out of range. Provide a "safe" version that always returns a
731 safe_strerror (errnum
)
737 if ((msg
= strerror (errnum
)) == NULL
)
739 sprintf (buf
, "(undocumented errno %d)", errnum
);
745 /* The strsignal() function can return NULL for signal values that are
746 out of range. Provide a "safe" version that always returns a
750 safe_strsignal (signo
)
756 if ((msg
= strsignal (signo
)) == NULL
)
758 sprintf (buf
, "(undocumented signal %d)", signo
);
765 /* Print the system error message for errno, and also mention STRING
766 as the file name for which the error was encountered.
767 Then return to command level. */
770 perror_with_name (string
)
776 err
= safe_strerror (errno
);
777 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
778 strcpy (combined
, string
);
779 strcat (combined
, ": ");
780 strcat (combined
, err
);
782 /* I understand setting these is a matter of taste. Still, some people
783 may clear errno but not know about bfd_error. Doing this here is not
785 bfd_set_error (bfd_error_no_error
);
788 error ("%s.", combined
);
791 /* Print the system error message for ERRCODE, and also mention STRING
792 as the file name for which the error was encountered. */
795 print_sys_errmsg (string
, errcode
)
802 err
= safe_strerror (errcode
);
803 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
804 strcpy (combined
, string
);
805 strcat (combined
, ": ");
806 strcat (combined
, err
);
808 /* We want anything which was printed on stdout to come out first, before
810 gdb_flush (gdb_stdout
);
811 fprintf_unfiltered (gdb_stderr
, "%s.\n", combined
);
814 /* Control C eventually causes this to be called, at a convenient time. */
819 serial_t gdb_stdout_serial
= serial_fdopen (1);
821 target_terminal_ours ();
823 /* We want all output to appear now, before we print "Quit". We
824 have 3 levels of buffering we have to flush (it's possible that
825 some of these should be changed to flush the lower-level ones
828 /* 1. The _filtered buffer. */
829 wrap_here ((char *) 0);
831 /* 2. The stdio buffer. */
832 gdb_flush (gdb_stdout
);
833 gdb_flush (gdb_stderr
);
835 /* 3. The system-level buffer. */
836 SERIAL_DRAIN_OUTPUT (gdb_stdout_serial
);
837 SERIAL_UN_FDOPEN (gdb_stdout_serial
);
839 annotate_error_begin ();
841 /* Don't use *_filtered; we don't want to prompt the user to continue. */
843 fprintf_unfiltered (gdb_stderr
, quit_pre_print
);
846 /* No steenking SIGINT will ever be coming our way when the
847 program is resumed. Don't lie. */
848 fprintf_unfiltered (gdb_stderr
, "Quit\n");
851 /* If there is no terminal switching for this target, then we can't
852 possibly get screwed by the lack of job control. */
853 || current_target
.to_terminal_ours
== NULL
)
854 fprintf_unfiltered (gdb_stderr
, "Quit\n");
856 fprintf_unfiltered (gdb_stderr
,
857 "Quit (expect signal SIGINT when the program is resumed)\n");
859 return_to_top_level (RETURN_QUIT
);
863 #if defined(_MSC_VER) /* should test for wingdb instead? */
866 * Windows translates all keyboard and mouse events
867 * into a message which is appended to the message
868 * queue for the process.
874 int k
= win32pollquit ();
881 #else /* !defined(_MSC_VER) */
886 /* Done by signals */
889 #endif /* !defined(_MSC_VER) */
891 /* Control C comes here */
897 /* Restore the signal handler. Harmless with BSD-style signals, needed
898 for System V-style signals. So just always do it, rather than worrying
899 about USG defines and stuff like that. */
900 signal (signo
, request_quit
);
910 /* Memory management stuff (malloc friends). */
912 /* Make a substitute size_t for non-ANSI compilers. */
914 #ifndef HAVE_STDDEF_H
916 #define size_t unsigned int
920 #if !defined (USE_MMALLOC)
923 mcalloc (PTR md
, size_t number
, size_t size
)
925 return calloc (number
, size
);
933 return malloc (size
);
937 mrealloc (md
, ptr
, size
)
942 if (ptr
== 0) /* Guard against old realloc's */
943 return malloc (size
);
945 return realloc (ptr
, size
);
956 #endif /* USE_MMALLOC */
958 #if !defined (USE_MMALLOC) || defined (NO_MMCHECK)
961 init_malloc (void *md
)
965 #else /* Have mmalloc and want corruption checking */
970 fprintf_unfiltered (gdb_stderr
, "Memory corruption\n");
974 /* Attempt to install hooks in mmalloc/mrealloc/mfree for the heap specified
975 by MD, to detect memory corruption. Note that MD may be NULL to specify
976 the default heap that grows via sbrk.
978 Note that for freshly created regions, we must call mmcheckf prior to any
979 mallocs in the region. Otherwise, any region which was allocated prior to
980 installing the checking hooks, which is later reallocated or freed, will
981 fail the checks! The mmcheck function only allows initial hooks to be
982 installed before the first mmalloc. However, anytime after we have called
983 mmcheck the first time to install the checking hooks, we can call it again
984 to update the function pointer to the memory corruption handler.
986 Returns zero on failure, non-zero on success. */
988 #ifndef MMCHECK_FORCE
989 #define MMCHECK_FORCE 0
993 init_malloc (void *md
)
995 if (!mmcheckf (md
, malloc_botch
, MMCHECK_FORCE
))
997 /* Don't use warning(), which relies on current_target being set
998 to something other than dummy_target, until after
999 initialize_all_files(). */
1002 (gdb_stderr
, "warning: failed to install memory consistency checks; ");
1004 (gdb_stderr
, "configuration should define NO_MMCHECK or MMCHECK_FORCE\n");
1010 #endif /* Have mmalloc and want corruption checking */
1012 /* Called when a memory allocation fails, with the number of bytes of
1013 memory requested in SIZE. */
1021 internal_error ("virtual memory exhausted: can't allocate %ld bytes.", size
);
1025 internal_error ("virtual memory exhausted.");
1029 /* Like mmalloc but get error if no storage available, and protect against
1030 the caller wanting to allocate zero bytes. Whether to return NULL for
1031 a zero byte request, or translate the request into a request for one
1032 byte of zero'd storage, is a religious issue. */
1045 else if ((val
= mmalloc (md
, size
)) == NULL
)
1052 /* Like mrealloc but get error if no storage available. */
1055 xmrealloc (md
, ptr
, size
)
1064 val
= mrealloc (md
, ptr
, size
);
1068 val
= mmalloc (md
, size
);
1077 /* Like malloc but get error if no storage available, and protect against
1078 the caller wanting to allocate zero bytes. */
1084 return (xmmalloc ((PTR
) NULL
, size
));
1087 /* Like calloc but get error if no storage available */
1090 xcalloc (size_t number
, size_t size
)
1092 void *mem
= mcalloc (NULL
, number
, size
);
1094 nomem (number
* size
);
1098 /* Like mrealloc but get error if no storage available. */
1101 xrealloc (ptr
, size
)
1105 return (xmrealloc ((PTR
) NULL
, ptr
, size
));
1109 /* My replacement for the read system call.
1110 Used like `read' but keeps going if `read' returns too soon. */
1113 myread (desc
, addr
, len
)
1123 val
= read (desc
, addr
, len
);
1127 return orglen
- len
;
1134 /* Make a copy of the string at PTR with SIZE characters
1135 (and add a null character at the end in the copy).
1136 Uses malloc to get the space. Returns the address of the copy. */
1139 savestring (ptr
, size
)
1143 register char *p
= (char *) xmalloc (size
+ 1);
1144 memcpy (p
, ptr
, size
);
1150 msavestring (void *md
, const char *ptr
, int size
)
1152 register char *p
= (char *) xmmalloc (md
, size
+ 1);
1153 memcpy (p
, ptr
, size
);
1158 /* The "const" is so it compiles under DGUX (which prototypes strsave
1159 in <string.h>. FIXME: This should be named "xstrsave", shouldn't it?
1160 Doesn't real strsave return NULL if out of memory? */
1165 return savestring (ptr
, strlen (ptr
));
1169 mstrsave (void *md
, const char *ptr
)
1171 return (msavestring (md
, ptr
, strlen (ptr
)));
1175 print_spaces (n
, file
)
1177 register struct ui_file
*file
;
1179 fputs_unfiltered (n_spaces (n
), file
);
1182 /* Print a host address. */
1185 gdb_print_host_address (void *addr
, struct ui_file
*stream
)
1188 /* We could use the %p conversion specifier to fprintf if we had any
1189 way of knowing whether this host supports it. But the following
1190 should work on the Alpha and on 32 bit machines. */
1192 fprintf_filtered (stream
, "0x%lx", (unsigned long) addr
);
1195 /* Ask user a y-or-n question and return 1 iff answer is yes.
1196 Takes three args which are given to printf to print the question.
1197 The first, a control string, should end in "? ".
1198 It should not say how to answer, because we do that. */
1202 query (char *ctlstr
,...)
1205 register int answer
;
1209 va_start (args
, ctlstr
);
1213 return query_hook (ctlstr
, args
);
1216 /* Automatically answer "yes" if input is not from a terminal. */
1217 if (!input_from_terminal_p ())
1220 /* FIXME Automatically answer "yes" if called from MacGDB. */
1227 wrap_here (""); /* Flush any buffered output */
1228 gdb_flush (gdb_stdout
);
1230 if (annotation_level
> 1)
1231 printf_filtered ("\n\032\032pre-query\n");
1233 vfprintf_filtered (gdb_stdout
, ctlstr
, args
);
1234 printf_filtered ("(y or n) ");
1236 if (annotation_level
> 1)
1237 printf_filtered ("\n\032\032query\n");
1240 /* If not in MacGDB, move to a new line so the entered line doesn't
1241 have a prompt on the front of it. */
1243 fputs_unfiltered ("\n", gdb_stdout
);
1247 gdb_flush (gdb_stdout
);
1250 if (!tui_version
|| cmdWin
== tuiWinWithFocus ())
1252 answer
= fgetc (stdin
);
1255 answer
= (unsigned char) tuiBufferGetc ();
1258 clearerr (stdin
); /* in case of C-d */
1259 if (answer
== EOF
) /* C-d */
1264 /* Eat rest of input line, to EOF or newline */
1265 if ((answer
!= '\n') || (tui_version
&& answer
!= '\r'))
1269 if (!tui_version
|| cmdWin
== tuiWinWithFocus ())
1271 ans2
= fgetc (stdin
);
1274 ans2
= (unsigned char) tuiBufferGetc ();
1278 while (ans2
!= EOF
&& ans2
!= '\n' && ans2
!= '\r');
1279 TUIDO (((TuiOpaqueFuncPtr
) tui_vStartNewLines
, 1));
1293 printf_filtered ("Please answer y or n.\n");
1296 if (annotation_level
> 1)
1297 printf_filtered ("\n\032\032post-query\n");
1302 /* Parse a C escape sequence. STRING_PTR points to a variable
1303 containing a pointer to the string to parse. That pointer
1304 should point to the character after the \. That pointer
1305 is updated past the characters we use. The value of the
1306 escape sequence is returned.
1308 A negative value means the sequence \ newline was seen,
1309 which is supposed to be equivalent to nothing at all.
1311 If \ is followed by a null character, we return a negative
1312 value and leave the string pointer pointing at the null character.
1314 If \ is followed by 000, we return 0 and leave the string pointer
1315 after the zeros. A value of 0 does not mean end of string. */
1318 parse_escape (string_ptr
)
1321 register int c
= *(*string_ptr
)++;
1325 return 007; /* Bell (alert) char */
1328 case 'e': /* Escape character */
1346 c
= *(*string_ptr
)++;
1348 c
= parse_escape (string_ptr
);
1351 return (c
& 0200) | (c
& 037);
1362 register int i
= c
- '0';
1363 register int count
= 0;
1366 if ((c
= *(*string_ptr
)++) >= '0' && c
<= '7')
1384 /* Print the character C on STREAM as part of the contents of a literal
1385 string whose delimiter is QUOTER. Note that this routine should only
1386 be call for printing things which are independent of the language
1387 of the program being debugged. */
1389 static void printchar (int c
, void (*do_fputs
) (const char *, struct ui_file
*), void (*do_fprintf
) (struct ui_file
*, const char *, ...), struct ui_file
*stream
, int quoter
);
1392 printchar (c
, do_fputs
, do_fprintf
, stream
, quoter
)
1394 void (*do_fputs
) PARAMS ((const char *, struct ui_file
*));
1395 void (*do_fprintf
) PARAMS ((struct ui_file
*, const char *, ...));
1396 struct ui_file
*stream
;
1400 c
&= 0xFF; /* Avoid sign bit follies */
1402 if (c
< 0x20 || /* Low control chars */
1403 (c
>= 0x7F && c
< 0xA0) || /* DEL, High controls */
1404 (sevenbit_strings
&& c
>= 0x80))
1405 { /* high order bit set */
1409 do_fputs ("\\n", stream
);
1412 do_fputs ("\\b", stream
);
1415 do_fputs ("\\t", stream
);
1418 do_fputs ("\\f", stream
);
1421 do_fputs ("\\r", stream
);
1424 do_fputs ("\\e", stream
);
1427 do_fputs ("\\a", stream
);
1430 do_fprintf (stream
, "\\%.3o", (unsigned int) c
);
1436 if (c
== '\\' || c
== quoter
)
1437 do_fputs ("\\", stream
);
1438 do_fprintf (stream
, "%c", c
);
1442 /* Print the character C on STREAM as part of the contents of a
1443 literal string whose delimiter is QUOTER. Note that these routines
1444 should only be call for printing things which are independent of
1445 the language of the program being debugged. */
1448 fputstr_filtered (str
, quoter
, stream
)
1451 struct ui_file
*stream
;
1454 printchar (*str
++, fputs_filtered
, fprintf_filtered
, stream
, quoter
);
1458 fputstr_unfiltered (str
, quoter
, stream
)
1461 struct ui_file
*stream
;
1464 printchar (*str
++, fputs_unfiltered
, fprintf_unfiltered
, stream
, quoter
);
1468 fputstrn_unfiltered (str
, n
, quoter
, stream
)
1472 struct ui_file
*stream
;
1475 for (i
= 0; i
< n
; i
++)
1476 printchar (str
[i
], fputs_unfiltered
, fprintf_unfiltered
, stream
, quoter
);
1481 /* Number of lines per page or UINT_MAX if paging is disabled. */
1482 static unsigned int lines_per_page
;
1483 /* Number of chars per line or UNIT_MAX if line folding is disabled. */
1484 static unsigned int chars_per_line
;
1485 /* Current count of lines printed on this page, chars on this line. */
1486 static unsigned int lines_printed
, chars_printed
;
1488 /* Buffer and start column of buffered text, for doing smarter word-
1489 wrapping. When someone calls wrap_here(), we start buffering output
1490 that comes through fputs_filtered(). If we see a newline, we just
1491 spit it out and forget about the wrap_here(). If we see another
1492 wrap_here(), we spit it out and remember the newer one. If we see
1493 the end of the line, we spit out a newline, the indent, and then
1494 the buffered output. */
1496 /* Malloc'd buffer with chars_per_line+2 bytes. Contains characters which
1497 are waiting to be output (they have already been counted in chars_printed).
1498 When wrap_buffer[0] is null, the buffer is empty. */
1499 static char *wrap_buffer
;
1501 /* Pointer in wrap_buffer to the next character to fill. */
1502 static char *wrap_pointer
;
1504 /* String to indent by if the wrap occurs. Must not be NULL if wrap_column
1506 static char *wrap_indent
;
1508 /* Column number on the screen where wrap_buffer begins, or 0 if wrapping
1509 is not in effect. */
1510 static int wrap_column
;
1513 /* Inialize the lines and chars per page */
1518 if (tui_version
&& m_winPtrNotNull (cmdWin
))
1520 lines_per_page
= cmdWin
->generic
.height
;
1521 chars_per_line
= cmdWin
->generic
.width
;
1526 /* These defaults will be used if we are unable to get the correct
1527 values from termcap. */
1528 #if defined(__GO32__)
1529 lines_per_page
= ScreenRows ();
1530 chars_per_line
= ScreenCols ();
1532 lines_per_page
= 24;
1533 chars_per_line
= 80;
1535 #if !defined (MPW) && !defined (_WIN32)
1536 /* No termcap under MPW, although might be cool to do something
1537 by looking at worksheet or console window sizes. */
1538 /* Initialize the screen height and width from termcap. */
1540 char *termtype
= getenv ("TERM");
1542 /* Positive means success, nonpositive means failure. */
1545 /* 2048 is large enough for all known terminals, according to the
1546 GNU termcap manual. */
1547 char term_buffer
[2048];
1551 status
= tgetent (term_buffer
, termtype
);
1555 int running_in_emacs
= getenv ("EMACS") != NULL
;
1557 val
= tgetnum ("li");
1558 if (val
>= 0 && !running_in_emacs
)
1559 lines_per_page
= val
;
1561 /* The number of lines per page is not mentioned
1562 in the terminal description. This probably means
1563 that paging is not useful (e.g. emacs shell window),
1564 so disable paging. */
1565 lines_per_page
= UINT_MAX
;
1567 val
= tgetnum ("co");
1569 chars_per_line
= val
;
1575 #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER)
1577 /* If there is a better way to determine the window size, use it. */
1578 SIGWINCH_HANDLER (SIGWINCH
);
1581 /* If the output is not a terminal, don't paginate it. */
1582 if (!ui_file_isatty (gdb_stdout
))
1583 lines_per_page
= UINT_MAX
;
1584 } /* the command_line_version */
1591 if (chars_per_line
== 0)
1596 wrap_buffer
= (char *) xmalloc (chars_per_line
+ 2);
1597 wrap_buffer
[0] = '\0';
1600 wrap_buffer
= (char *) xrealloc (wrap_buffer
, chars_per_line
+ 2);
1601 wrap_pointer
= wrap_buffer
; /* Start it at the beginning */
1606 set_width_command (args
, from_tty
, c
)
1609 struct cmd_list_element
*c
;
1614 /* Wait, so the user can read what's on the screen. Prompt the user
1615 to continue by pressing RETURN. */
1618 prompt_for_continue ()
1621 char cont_prompt
[120];
1623 if (annotation_level
> 1)
1624 printf_unfiltered ("\n\032\032pre-prompt-for-continue\n");
1626 strcpy (cont_prompt
,
1627 "---Type <return> to continue, or q <return> to quit---");
1628 if (annotation_level
> 1)
1629 strcat (cont_prompt
, "\n\032\032prompt-for-continue\n");
1631 /* We must do this *before* we call gdb_readline, else it will eventually
1632 call us -- thinking that we're trying to print beyond the end of the
1634 reinitialize_more_filter ();
1637 /* On a real operating system, the user can quit with SIGINT.
1640 'q' is provided on all systems so users don't have to change habits
1641 from system to system, and because telling them what to do in
1642 the prompt is more user-friendly than expecting them to think of
1644 /* Call readline, not gdb_readline, because GO32 readline handles control-C
1645 whereas control-C to gdb_readline will cause the user to get dumped
1647 ignore
= readline (cont_prompt
);
1649 if (annotation_level
> 1)
1650 printf_unfiltered ("\n\032\032post-prompt-for-continue\n");
1655 while (*p
== ' ' || *p
== '\t')
1660 request_quit (SIGINT
);
1662 async_request_quit (0);
1668 /* Now we have to do this again, so that GDB will know that it doesn't
1669 need to save the ---Type <return>--- line at the top of the screen. */
1670 reinitialize_more_filter ();
1672 dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */
1675 /* Reinitialize filter; ie. tell it to reset to original values. */
1678 reinitialize_more_filter ()
1684 /* Indicate that if the next sequence of characters overflows the line,
1685 a newline should be inserted here rather than when it hits the end.
1686 If INDENT is non-null, it is a string to be printed to indent the
1687 wrapped part on the next line. INDENT must remain accessible until
1688 the next call to wrap_here() or until a newline is printed through
1691 If the line is already overfull, we immediately print a newline and
1692 the indentation, and disable further wrapping.
1694 If we don't know the width of lines, but we know the page height,
1695 we must not wrap words, but should still keep track of newlines
1696 that were explicitly printed.
1698 INDENT should not contain tabs, as that will mess up the char count
1699 on the next line. FIXME.
1701 This routine is guaranteed to force out any output which has been
1702 squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be
1703 used to force out output from the wrap_buffer. */
1709 /* This should have been allocated, but be paranoid anyway. */
1715 *wrap_pointer
= '\0';
1716 fputs_unfiltered (wrap_buffer
, gdb_stdout
);
1718 wrap_pointer
= wrap_buffer
;
1719 wrap_buffer
[0] = '\0';
1720 if (chars_per_line
== UINT_MAX
) /* No line overflow checking */
1724 else if (chars_printed
>= chars_per_line
)
1726 puts_filtered ("\n");
1728 puts_filtered (indent
);
1733 wrap_column
= chars_printed
;
1737 wrap_indent
= indent
;
1741 /* Ensure that whatever gets printed next, using the filtered output
1742 commands, starts at the beginning of the line. I.E. if there is
1743 any pending output for the current line, flush it and start a new
1744 line. Otherwise do nothing. */
1749 if (chars_printed
> 0)
1751 puts_filtered ("\n");
1756 /* Like fputs but if FILTER is true, pause after every screenful.
1758 Regardless of FILTER can wrap at points other than the final
1759 character of a line.
1761 Unlike fputs, fputs_maybe_filtered does not return a value.
1762 It is OK for LINEBUFFER to be NULL, in which case just don't print
1765 Note that a longjmp to top level may occur in this routine (only if
1766 FILTER is true) (since prompt_for_continue may do so) so this
1767 routine should not be called when cleanups are not in place. */
1770 fputs_maybe_filtered (linebuffer
, stream
, filter
)
1771 const char *linebuffer
;
1772 struct ui_file
*stream
;
1775 const char *lineptr
;
1777 if (linebuffer
== 0)
1780 /* Don't do any filtering if it is disabled. */
1781 if ((stream
!= gdb_stdout
) || !pagination_enabled
1782 || (lines_per_page
== UINT_MAX
&& chars_per_line
== UINT_MAX
))
1784 fputs_unfiltered (linebuffer
, stream
);
1788 /* Go through and output each character. Show line extension
1789 when this is necessary; prompt user for new page when this is
1792 lineptr
= linebuffer
;
1795 /* Possible new page. */
1797 (lines_printed
>= lines_per_page
- 1))
1798 prompt_for_continue ();
1800 while (*lineptr
&& *lineptr
!= '\n')
1802 /* Print a single line. */
1803 if (*lineptr
== '\t')
1806 *wrap_pointer
++ = '\t';
1808 fputc_unfiltered ('\t', stream
);
1809 /* Shifting right by 3 produces the number of tab stops
1810 we have already passed, and then adding one and
1811 shifting left 3 advances to the next tab stop. */
1812 chars_printed
= ((chars_printed
>> 3) + 1) << 3;
1818 *wrap_pointer
++ = *lineptr
;
1820 fputc_unfiltered (*lineptr
, stream
);
1825 if (chars_printed
>= chars_per_line
)
1827 unsigned int save_chars
= chars_printed
;
1831 /* If we aren't actually wrapping, don't output newline --
1832 if chars_per_line is right, we probably just overflowed
1833 anyway; if it's wrong, let us keep going. */
1835 fputc_unfiltered ('\n', stream
);
1837 /* Possible new page. */
1838 if (lines_printed
>= lines_per_page
- 1)
1839 prompt_for_continue ();
1841 /* Now output indentation and wrapped string */
1844 fputs_unfiltered (wrap_indent
, stream
);
1845 *wrap_pointer
= '\0'; /* Null-terminate saved stuff */
1846 fputs_unfiltered (wrap_buffer
, stream
); /* and eject it */
1847 /* FIXME, this strlen is what prevents wrap_indent from
1848 containing tabs. However, if we recurse to print it
1849 and count its chars, we risk trouble if wrap_indent is
1850 longer than (the user settable) chars_per_line.
1851 Note also that this can set chars_printed > chars_per_line
1852 if we are printing a long string. */
1853 chars_printed
= strlen (wrap_indent
)
1854 + (save_chars
- wrap_column
);
1855 wrap_pointer
= wrap_buffer
; /* Reset buffer */
1856 wrap_buffer
[0] = '\0';
1857 wrap_column
= 0; /* And disable fancy wrap */
1862 if (*lineptr
== '\n')
1865 wrap_here ((char *) 0); /* Spit out chars, cancel further wraps */
1867 fputc_unfiltered ('\n', stream
);
1874 fputs_filtered (linebuffer
, stream
)
1875 const char *linebuffer
;
1876 struct ui_file
*stream
;
1878 fputs_maybe_filtered (linebuffer
, stream
, 1);
1882 putchar_unfiltered (c
)
1886 ui_file_write (gdb_stdout
, &buf
, 1);
1891 fputc_unfiltered (c
, stream
)
1893 struct ui_file
*stream
;
1896 ui_file_write (stream
, &buf
, 1);
1901 fputc_filtered (c
, stream
)
1903 struct ui_file
*stream
;
1909 fputs_filtered (buf
, stream
);
1913 /* puts_debug is like fputs_unfiltered, except it prints special
1914 characters in printable fashion. */
1917 puts_debug (prefix
, string
, suffix
)
1924 /* Print prefix and suffix after each line. */
1925 static int new_line
= 1;
1926 static int return_p
= 0;
1927 static char *prev_prefix
= "";
1928 static char *prev_suffix
= "";
1930 if (*string
== '\n')
1933 /* If the prefix is changing, print the previous suffix, a new line,
1934 and the new prefix. */
1935 if ((return_p
|| (strcmp (prev_prefix
, prefix
) != 0)) && !new_line
)
1937 fputs_unfiltered (prev_suffix
, gdb_stdlog
);
1938 fputs_unfiltered ("\n", gdb_stdlog
);
1939 fputs_unfiltered (prefix
, gdb_stdlog
);
1942 /* Print prefix if we printed a newline during the previous call. */
1946 fputs_unfiltered (prefix
, gdb_stdlog
);
1949 prev_prefix
= prefix
;
1950 prev_suffix
= suffix
;
1952 /* Output characters in a printable format. */
1953 while ((ch
= *string
++) != '\0')
1959 fputc_unfiltered (ch
, gdb_stdlog
);
1962 fprintf_unfiltered (gdb_stdlog
, "\\x%02x", ch
& 0xff);
1966 fputs_unfiltered ("\\\\", gdb_stdlog
);
1969 fputs_unfiltered ("\\b", gdb_stdlog
);
1972 fputs_unfiltered ("\\f", gdb_stdlog
);
1976 fputs_unfiltered ("\\n", gdb_stdlog
);
1979 fputs_unfiltered ("\\r", gdb_stdlog
);
1982 fputs_unfiltered ("\\t", gdb_stdlog
);
1985 fputs_unfiltered ("\\v", gdb_stdlog
);
1989 return_p
= ch
== '\r';
1992 /* Print suffix if we printed a newline. */
1995 fputs_unfiltered (suffix
, gdb_stdlog
);
1996 fputs_unfiltered ("\n", gdb_stdlog
);
2001 /* Print a variable number of ARGS using format FORMAT. If this
2002 information is going to put the amount written (since the last call
2003 to REINITIALIZE_MORE_FILTER or the last page break) over the page size,
2004 call prompt_for_continue to get the users permision to continue.
2006 Unlike fprintf, this function does not return a value.
2008 We implement three variants, vfprintf (takes a vararg list and stream),
2009 fprintf (takes a stream to write on), and printf (the usual).
2011 Note also that a longjmp to top level may occur in this routine
2012 (since prompt_for_continue may do so) so this routine should not be
2013 called when cleanups are not in place. */
2016 vfprintf_maybe_filtered (stream
, format
, args
, filter
)
2017 struct ui_file
*stream
;
2023 struct cleanup
*old_cleanups
;
2025 vasprintf (&linebuffer
, format
, args
);
2026 if (linebuffer
== NULL
)
2028 fputs_unfiltered ("\ngdb: virtual memory exhausted.\n", gdb_stderr
);
2031 old_cleanups
= make_cleanup (free
, linebuffer
);
2032 fputs_maybe_filtered (linebuffer
, stream
, filter
);
2033 do_cleanups (old_cleanups
);
2038 vfprintf_filtered (stream
, format
, args
)
2039 struct ui_file
*stream
;
2043 vfprintf_maybe_filtered (stream
, format
, args
, 1);
2047 vfprintf_unfiltered (stream
, format
, args
)
2048 struct ui_file
*stream
;
2053 struct cleanup
*old_cleanups
;
2055 vasprintf (&linebuffer
, format
, args
);
2056 if (linebuffer
== NULL
)
2058 fputs_unfiltered ("\ngdb: virtual memory exhausted.\n", gdb_stderr
);
2061 old_cleanups
= make_cleanup (free
, linebuffer
);
2062 fputs_unfiltered (linebuffer
, stream
);
2063 do_cleanups (old_cleanups
);
2067 vprintf_filtered (format
, args
)
2071 vfprintf_maybe_filtered (gdb_stdout
, format
, args
, 1);
2075 vprintf_unfiltered (format
, args
)
2079 vfprintf_unfiltered (gdb_stdout
, format
, args
);
2083 fprintf_filtered (struct ui_file
* stream
, const char *format
,...)
2086 va_start (args
, format
);
2087 vfprintf_filtered (stream
, format
, args
);
2092 fprintf_unfiltered (struct ui_file
* stream
, const char *format
,...)
2095 va_start (args
, format
);
2096 vfprintf_unfiltered (stream
, format
, args
);
2100 /* Like fprintf_filtered, but prints its result indented.
2101 Called as fprintfi_filtered (spaces, stream, format, ...); */
2104 fprintfi_filtered (int spaces
, struct ui_file
* stream
, const char *format
,...)
2107 va_start (args
, format
);
2108 print_spaces_filtered (spaces
, stream
);
2110 vfprintf_filtered (stream
, format
, args
);
2116 printf_filtered (const char *format
,...)
2119 va_start (args
, format
);
2120 vfprintf_filtered (gdb_stdout
, format
, args
);
2126 printf_unfiltered (const char *format
,...)
2129 va_start (args
, format
);
2130 vfprintf_unfiltered (gdb_stdout
, format
, args
);
2134 /* Like printf_filtered, but prints it's result indented.
2135 Called as printfi_filtered (spaces, format, ...); */
2138 printfi_filtered (int spaces
, const char *format
,...)
2141 va_start (args
, format
);
2142 print_spaces_filtered (spaces
, gdb_stdout
);
2143 vfprintf_filtered (gdb_stdout
, format
, args
);
2147 /* Easy -- but watch out!
2149 This routine is *not* a replacement for puts()! puts() appends a newline.
2150 This one doesn't, and had better not! */
2153 puts_filtered (string
)
2156 fputs_filtered (string
, gdb_stdout
);
2160 puts_unfiltered (string
)
2163 fputs_unfiltered (string
, gdb_stdout
);
2166 /* Return a pointer to N spaces and a null. The pointer is good
2167 until the next call to here. */
2173 static char *spaces
= 0;
2174 static int max_spaces
= -1;
2180 spaces
= (char *) xmalloc (n
+ 1);
2181 for (t
= spaces
+ n
; t
!= spaces
;)
2187 return spaces
+ max_spaces
- n
;
2190 /* Print N spaces. */
2192 print_spaces_filtered (n
, stream
)
2194 struct ui_file
*stream
;
2196 fputs_filtered (n_spaces (n
), stream
);
2199 /* C++ demangler stuff. */
2201 /* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language
2202 LANG, using demangling args ARG_MODE, and print it filtered to STREAM.
2203 If the name is not mangled, or the language for the name is unknown, or
2204 demangling is off, the name is printed in its "raw" form. */
2207 fprintf_symbol_filtered (stream
, name
, lang
, arg_mode
)
2208 struct ui_file
*stream
;
2217 /* If user wants to see raw output, no problem. */
2220 fputs_filtered (name
, stream
);
2226 case language_cplus
:
2227 demangled
= cplus_demangle (name
, arg_mode
);
2230 demangled
= cplus_demangle (name
, arg_mode
| DMGL_JAVA
);
2232 case language_chill
:
2233 demangled
= chill_demangle (name
);
2239 fputs_filtered (demangled
? demangled
: name
, stream
);
2240 if (demangled
!= NULL
)
2248 /* Do a strcmp() type operation on STRING1 and STRING2, ignoring any
2249 differences in whitespace. Returns 0 if they match, non-zero if they
2250 don't (slightly different than strcmp()'s range of return values).
2252 As an extra hack, string1=="FOO(ARGS)" matches string2=="FOO".
2253 This "feature" is useful when searching for matching C++ function names
2254 (such as if the user types 'break FOO', where FOO is a mangled C++
2258 strcmp_iw (string1
, string2
)
2259 const char *string1
;
2260 const char *string2
;
2262 while ((*string1
!= '\0') && (*string2
!= '\0'))
2264 while (isspace (*string1
))
2268 while (isspace (*string2
))
2272 if (*string1
!= *string2
)
2276 if (*string1
!= '\0')
2282 return (*string1
!= '\0' && *string1
!= '(') || (*string2
!= '\0');
2288 ** Answer whether string_to_compare is a full or partial match to
2289 ** template_string. The partial match must be in sequence starting
2293 subset_compare (string_to_compare
, template_string
)
2294 char *string_to_compare
;
2295 char *template_string
;
2298 if (template_string
!= (char *) NULL
&& string_to_compare
!= (char *) NULL
&&
2299 strlen (string_to_compare
) <= strlen (template_string
))
2300 match
= (strncmp (template_string
,
2302 strlen (string_to_compare
)) == 0);
2309 static void pagination_on_command
PARAMS ((char *arg
, int from_tty
));
2311 pagination_on_command (arg
, from_tty
)
2315 pagination_enabled
= 1;
2318 static void pagination_on_command
PARAMS ((char *arg
, int from_tty
));
2320 pagination_off_command (arg
, from_tty
)
2324 pagination_enabled
= 0;
2331 struct cmd_list_element
*c
;
2333 c
= add_set_cmd ("width", class_support
, var_uinteger
,
2334 (char *) &chars_per_line
,
2335 "Set number of characters gdb thinks are in a line.",
2337 add_show_from_set (c
, &showlist
);
2338 c
->function
.sfunc
= set_width_command
;
2341 (add_set_cmd ("height", class_support
,
2342 var_uinteger
, (char *) &lines_per_page
,
2343 "Set number of lines gdb thinks are in a page.", &setlist
),
2348 /* If the output is not a terminal, don't paginate it. */
2349 if (!ui_file_isatty (gdb_stdout
))
2350 lines_per_page
= UINT_MAX
;
2352 set_width_command ((char *) NULL
, 0, c
);
2355 (add_set_cmd ("demangle", class_support
, var_boolean
,
2357 "Set demangling of encoded C++ names when displaying symbols.",
2362 (add_set_cmd ("pagination", class_support
,
2363 var_boolean
, (char *) &pagination_enabled
,
2364 "Set state of pagination.", &setlist
),
2368 add_com ("am", class_support
, pagination_on_command
,
2369 "Enable pagination");
2370 add_com ("sm", class_support
, pagination_off_command
,
2371 "Disable pagination");
2375 (add_set_cmd ("sevenbit-strings", class_support
, var_boolean
,
2376 (char *) &sevenbit_strings
,
2377 "Set printing of 8-bit characters in strings as \\nnn.",
2382 (add_set_cmd ("asm-demangle", class_support
, var_boolean
,
2383 (char *) &asm_demangle
,
2384 "Set demangling of C++ names in disassembly listings.",
2389 /* Machine specific function to handle SIGWINCH signal. */
2391 #ifdef SIGWINCH_HANDLER_BODY
2392 SIGWINCH_HANDLER_BODY
2395 /* Support for converting target fp numbers into host DOUBLEST format. */
2397 /* XXX - This code should really be in libiberty/floatformat.c, however
2398 configuration issues with libiberty made this very difficult to do in the
2401 #include "floatformat.h"
2402 #include <math.h> /* ldexp */
2404 /* The odds that CHAR_BIT will be anything but 8 are low enough that I'm not
2405 going to bother with trying to muck around with whether it is defined in
2406 a system header, what we do if not, etc. */
2407 #define FLOATFORMAT_CHAR_BIT 8
2409 static unsigned long get_field
PARAMS ((unsigned char *,
2410 enum floatformat_byteorders
,
2415 /* Extract a field which starts at START and is LEN bytes long. DATA and
2416 TOTAL_LEN are the thing we are extracting it from, in byteorder ORDER. */
2417 static unsigned long
2418 get_field (data
, order
, total_len
, start
, len
)
2419 unsigned char *data
;
2420 enum floatformat_byteorders order
;
2421 unsigned int total_len
;
2425 unsigned long result
;
2426 unsigned int cur_byte
;
2429 /* Start at the least significant part of the field. */
2430 if (order
== floatformat_little
|| order
== floatformat_littlebyte_bigword
)
2432 /* We start counting from the other end (i.e, from the high bytes
2433 rather than the low bytes). As such, we need to be concerned
2434 with what happens if bit 0 doesn't start on a byte boundary.
2435 I.e, we need to properly handle the case where total_len is
2436 not evenly divisible by 8. So we compute ``excess'' which
2437 represents the number of bits from the end of our starting
2438 byte needed to get to bit 0. */
2439 int excess
= FLOATFORMAT_CHAR_BIT
- (total_len
% FLOATFORMAT_CHAR_BIT
);
2440 cur_byte
= (total_len
/ FLOATFORMAT_CHAR_BIT
)
2441 - ((start
+ len
+ excess
) / FLOATFORMAT_CHAR_BIT
);
2442 cur_bitshift
= ((start
+ len
+ excess
) % FLOATFORMAT_CHAR_BIT
)
2443 - FLOATFORMAT_CHAR_BIT
;
2447 cur_byte
= (start
+ len
) / FLOATFORMAT_CHAR_BIT
;
2449 ((start
+ len
) % FLOATFORMAT_CHAR_BIT
) - FLOATFORMAT_CHAR_BIT
;
2451 if (cur_bitshift
> -FLOATFORMAT_CHAR_BIT
)
2452 result
= *(data
+ cur_byte
) >> (-cur_bitshift
);
2455 cur_bitshift
+= FLOATFORMAT_CHAR_BIT
;
2456 if (order
== floatformat_little
|| order
== floatformat_littlebyte_bigword
)
2461 /* Move towards the most significant part of the field. */
2462 while (cur_bitshift
< len
)
2464 result
|= (unsigned long)*(data
+ cur_byte
) << cur_bitshift
;
2465 cur_bitshift
+= FLOATFORMAT_CHAR_BIT
;
2466 if (order
== floatformat_little
|| order
== floatformat_littlebyte_bigword
)
2471 if (len
< sizeof(result
) * FLOATFORMAT_CHAR_BIT
)
2472 /* Mask out bits which are not part of the field */
2473 result
&= ((1UL << len
) - 1);
2477 /* Convert from FMT to a DOUBLEST.
2478 FROM is the address of the extended float.
2479 Store the DOUBLEST in *TO. */
2482 floatformat_to_doublest (fmt
, from
, to
)
2483 const struct floatformat
*fmt
;
2487 unsigned char *ufrom
= (unsigned char *) from
;
2491 unsigned int mant_bits
, mant_off
;
2493 int special_exponent
; /* It's a NaN, denorm or zero */
2495 /* If the mantissa bits are not contiguous from one end of the
2496 mantissa to the other, we need to make a private copy of the
2497 source bytes that is in the right order since the unpacking
2498 algorithm assumes that the bits are contiguous.
2500 Swap the bytes individually rather than accessing them through
2501 "long *" since we have no guarantee that they start on a long
2502 alignment, and also sizeof(long) for the host could be different
2503 than sizeof(long) for the target. FIXME: Assumes sizeof(long)
2504 for the target is 4. */
2506 if (fmt
->byteorder
== floatformat_littlebyte_bigword
)
2508 static unsigned char *newfrom
;
2509 unsigned char *swapin
, *swapout
;
2512 longswaps
= fmt
->totalsize
/ FLOATFORMAT_CHAR_BIT
;
2515 if (newfrom
== NULL
)
2517 newfrom
= (unsigned char *) xmalloc (fmt
->totalsize
);
2522 while (longswaps
-- > 0)
2524 /* This is ugly, but efficient */
2525 *swapout
++ = swapin
[4];
2526 *swapout
++ = swapin
[5];
2527 *swapout
++ = swapin
[6];
2528 *swapout
++ = swapin
[7];
2529 *swapout
++ = swapin
[0];
2530 *swapout
++ = swapin
[1];
2531 *swapout
++ = swapin
[2];
2532 *swapout
++ = swapin
[3];
2537 exponent
= get_field (ufrom
, fmt
->byteorder
, fmt
->totalsize
,
2538 fmt
->exp_start
, fmt
->exp_len
);
2539 /* Note that if exponent indicates a NaN, we can't really do anything useful
2540 (not knowing if the host has NaN's, or how to build one). So it will
2541 end up as an infinity or something close; that is OK. */
2543 mant_bits_left
= fmt
->man_len
;
2544 mant_off
= fmt
->man_start
;
2547 special_exponent
= exponent
== 0 || exponent
== fmt
->exp_nan
;
2549 /* Don't bias NaNs. Use minimum exponent for denorms. For simplicity,
2550 we don't check for zero as the exponent doesn't matter. */
2551 if (!special_exponent
)
2552 exponent
-= fmt
->exp_bias
;
2553 else if (exponent
== 0)
2554 exponent
= 1 - fmt
->exp_bias
;
2556 /* Build the result algebraically. Might go infinite, underflow, etc;
2559 /* If this format uses a hidden bit, explicitly add it in now. Otherwise,
2560 increment the exponent by one to account for the integer bit. */
2562 if (!special_exponent
)
2564 if (fmt
->intbit
== floatformat_intbit_no
)
2565 dto
= ldexp (1.0, exponent
);
2570 while (mant_bits_left
> 0)
2572 mant_bits
= min (mant_bits_left
, 32);
2574 mant
= get_field (ufrom
, fmt
->byteorder
, fmt
->totalsize
,
2575 mant_off
, mant_bits
);
2577 dto
+= ldexp ((double) mant
, exponent
- mant_bits
);
2578 exponent
-= mant_bits
;
2579 mant_off
+= mant_bits
;
2580 mant_bits_left
-= mant_bits
;
2583 /* Negate it if negative. */
2584 if (get_field (ufrom
, fmt
->byteorder
, fmt
->totalsize
, fmt
->sign_start
, 1))
2589 static void put_field
PARAMS ((unsigned char *, enum floatformat_byteorders
,
2595 /* Set a field which starts at START and is LEN bytes long. DATA and
2596 TOTAL_LEN are the thing we are extracting it from, in byteorder ORDER. */
2598 put_field (data
, order
, total_len
, start
, len
, stuff_to_put
)
2599 unsigned char *data
;
2600 enum floatformat_byteorders order
;
2601 unsigned int total_len
;
2604 unsigned long stuff_to_put
;
2606 unsigned int cur_byte
;
2609 /* Start at the least significant part of the field. */
2610 if (order
== floatformat_little
|| order
== floatformat_littlebyte_bigword
)
2612 int excess
= FLOATFORMAT_CHAR_BIT
- (total_len
% FLOATFORMAT_CHAR_BIT
);
2613 cur_byte
= (total_len
/ FLOATFORMAT_CHAR_BIT
)
2614 - ((start
+ len
+ excess
) / FLOATFORMAT_CHAR_BIT
);
2615 cur_bitshift
= ((start
+ len
+ excess
) % FLOATFORMAT_CHAR_BIT
)
2616 - FLOATFORMAT_CHAR_BIT
;
2620 cur_byte
= (start
+ len
) / FLOATFORMAT_CHAR_BIT
;
2622 ((start
+ len
) % FLOATFORMAT_CHAR_BIT
) - FLOATFORMAT_CHAR_BIT
;
2624 if (cur_bitshift
> -FLOATFORMAT_CHAR_BIT
)
2626 *(data
+ cur_byte
) &=
2627 ~(((1 << ((start
+ len
) % FLOATFORMAT_CHAR_BIT
)) - 1)
2628 << (-cur_bitshift
));
2629 *(data
+ cur_byte
) |=
2630 (stuff_to_put
& ((1 << FLOATFORMAT_CHAR_BIT
) - 1)) << (-cur_bitshift
);
2632 cur_bitshift
+= FLOATFORMAT_CHAR_BIT
;
2633 if (order
== floatformat_little
|| order
== floatformat_littlebyte_bigword
)
2638 /* Move towards the most significant part of the field. */
2639 while (cur_bitshift
< len
)
2641 if (len
- cur_bitshift
< FLOATFORMAT_CHAR_BIT
)
2643 /* This is the last byte. */
2644 *(data
+ cur_byte
) &=
2645 ~((1 << (len
- cur_bitshift
)) - 1);
2646 *(data
+ cur_byte
) |= (stuff_to_put
>> cur_bitshift
);
2649 *(data
+ cur_byte
) = ((stuff_to_put
>> cur_bitshift
)
2650 & ((1 << FLOATFORMAT_CHAR_BIT
) - 1));
2651 cur_bitshift
+= FLOATFORMAT_CHAR_BIT
;
2652 if (order
== floatformat_little
|| order
== floatformat_littlebyte_bigword
)
2659 #ifdef HAVE_LONG_DOUBLE
2660 /* Return the fractional part of VALUE, and put the exponent of VALUE in *EPTR.
2661 The range of the returned value is >= 0.5 and < 1.0. This is equivalent to
2662 frexp, but operates on the long double data type. */
2664 static long double ldfrexp
PARAMS ((long double value
, int *eptr
));
2667 ldfrexp (value
, eptr
)
2674 /* Unfortunately, there are no portable functions for extracting the exponent
2675 of a long double, so we have to do it iteratively by multiplying or dividing
2676 by two until the fraction is between 0.5 and 1.0. */
2684 if (value
>= tmp
) /* Value >= 1.0 */
2685 while (value
>= tmp
)
2690 else if (value
!= 0.0l) /* Value < 1.0 and > 0.0 */
2704 #endif /* HAVE_LONG_DOUBLE */
2707 /* The converse: convert the DOUBLEST *FROM to an extended float
2708 and store where TO points. Neither FROM nor TO have any alignment
2712 floatformat_from_doublest (fmt
, from
, to
)
2713 CONST
struct floatformat
*fmt
;
2720 unsigned int mant_bits
, mant_off
;
2722 unsigned char *uto
= (unsigned char *) to
;
2724 memcpy (&dfrom
, from
, sizeof (dfrom
));
2725 memset (uto
, 0, fmt
->totalsize
/ FLOATFORMAT_CHAR_BIT
);
2727 return; /* Result is zero */
2728 if (dfrom
!= dfrom
) /* Result is NaN */
2731 put_field (uto
, fmt
->byteorder
, fmt
->totalsize
, fmt
->exp_start
,
2732 fmt
->exp_len
, fmt
->exp_nan
);
2733 /* Be sure it's not infinity, but NaN value is irrel */
2734 put_field (uto
, fmt
->byteorder
, fmt
->totalsize
, fmt
->man_start
,
2739 /* If negative, set the sign bit. */
2742 put_field (uto
, fmt
->byteorder
, fmt
->totalsize
, fmt
->sign_start
, 1, 1);
2746 if (dfrom
+ dfrom
== dfrom
&& dfrom
!= 0.0) /* Result is Infinity */
2748 /* Infinity exponent is same as NaN's. */
2749 put_field (uto
, fmt
->byteorder
, fmt
->totalsize
, fmt
->exp_start
,
2750 fmt
->exp_len
, fmt
->exp_nan
);
2751 /* Infinity mantissa is all zeroes. */
2752 put_field (uto
, fmt
->byteorder
, fmt
->totalsize
, fmt
->man_start
,
2757 #ifdef HAVE_LONG_DOUBLE
2758 mant
= ldfrexp (dfrom
, &exponent
);
2760 mant
= frexp (dfrom
, &exponent
);
2763 put_field (uto
, fmt
->byteorder
, fmt
->totalsize
, fmt
->exp_start
, fmt
->exp_len
,
2764 exponent
+ fmt
->exp_bias
- 1);
2766 mant_bits_left
= fmt
->man_len
;
2767 mant_off
= fmt
->man_start
;
2768 while (mant_bits_left
> 0)
2770 unsigned long mant_long
;
2771 mant_bits
= mant_bits_left
< 32 ? mant_bits_left
: 32;
2773 mant
*= 4294967296.0;
2774 mant_long
= (unsigned long) mant
;
2777 /* If the integer bit is implicit, then we need to discard it.
2778 If we are discarding a zero, we should be (but are not) creating
2779 a denormalized number which means adjusting the exponent
2781 if (mant_bits_left
== fmt
->man_len
2782 && fmt
->intbit
== floatformat_intbit_no
)
2790 /* The bits we want are in the most significant MANT_BITS bits of
2791 mant_long. Move them to the least significant. */
2792 mant_long
>>= 32 - mant_bits
;
2795 put_field (uto
, fmt
->byteorder
, fmt
->totalsize
,
2796 mant_off
, mant_bits
, mant_long
);
2797 mant_off
+= mant_bits
;
2798 mant_bits_left
-= mant_bits
;
2800 if (fmt
->byteorder
== floatformat_littlebyte_bigword
)
2803 unsigned char *swaplow
= uto
;
2804 unsigned char *swaphigh
= uto
+ 4;
2807 for (count
= 0; count
< 4; count
++)
2810 *swaplow
++ = *swaphigh
;
2816 /* temporary storage using circular buffer */
2822 static char buf
[NUMCELLS
][CELLSIZE
];
2823 static int cell
= 0;
2824 if (++cell
>= NUMCELLS
)
2829 /* print routines to handle variable size regs, etc.
2831 FIXME: Note that t_addr is a bfd_vma, which is currently either an
2832 unsigned long or unsigned long long, determined at configure time.
2833 If t_addr is an unsigned long long and sizeof (unsigned long long)
2834 is greater than sizeof (unsigned long), then I believe this code will
2835 probably lose, at least for little endian machines. I believe that
2836 it would also be better to eliminate the switch on the absolute size
2837 of t_addr and replace it with a sequence of if statements that compare
2838 sizeof t_addr with sizeof the various types and do the right thing,
2839 which includes knowing whether or not the host supports long long.
2847 return (TARGET_PTR_BIT
/ 8 * 2);
2851 /* eliminate warning from compiler on 32-bit systems */
2852 static int thirty_two
= 32;
2855 paddr (CORE_ADDR addr
)
2857 char *paddr_str
= get_cell ();
2858 switch (TARGET_PTR_BIT
/ 8)
2861 sprintf (paddr_str
, "%08lx%08lx",
2862 (unsigned long) (addr
>> thirty_two
), (unsigned long) (addr
& 0xffffffff));
2865 sprintf (paddr_str
, "%08lx", (unsigned long) addr
);
2868 sprintf (paddr_str
, "%04x", (unsigned short) (addr
& 0xffff));
2871 sprintf (paddr_str
, "%lx", (unsigned long) addr
);
2877 paddr_nz (CORE_ADDR addr
)
2879 char *paddr_str
= get_cell ();
2880 switch (TARGET_PTR_BIT
/ 8)
2884 unsigned long high
= (unsigned long) (addr
>> thirty_two
);
2886 sprintf (paddr_str
, "%lx", (unsigned long) (addr
& 0xffffffff));
2888 sprintf (paddr_str
, "%lx%08lx",
2889 high
, (unsigned long) (addr
& 0xffffffff));
2893 sprintf (paddr_str
, "%lx", (unsigned long) addr
);
2896 sprintf (paddr_str
, "%x", (unsigned short) (addr
& 0xffff));
2899 sprintf (paddr_str
, "%lx", (unsigned long) addr
);
2905 decimal2str (char *paddr_str
, char *sign
, ULONGEST addr
)
2907 /* steal code from valprint.c:print_decimal(). Should this worry
2908 about the real size of addr as the above does? */
2909 unsigned long temp
[3];
2913 temp
[i
] = addr
% (1000 * 1000 * 1000);
2914 addr
/= (1000 * 1000 * 1000);
2917 while (addr
!= 0 && i
< (sizeof (temp
) / sizeof (temp
[0])));
2921 sprintf (paddr_str
, "%s%lu",
2925 sprintf (paddr_str
, "%s%lu%09lu",
2926 sign
, temp
[1], temp
[0]);
2929 sprintf (paddr_str
, "%s%lu%09lu%09lu",
2930 sign
, temp
[2], temp
[1], temp
[0]);
2938 paddr_u (CORE_ADDR addr
)
2940 char *paddr_str
= get_cell ();
2941 decimal2str (paddr_str
, "", addr
);
2946 paddr_d (LONGEST addr
)
2948 char *paddr_str
= get_cell ();
2950 decimal2str (paddr_str
, "-", -addr
);
2952 decimal2str (paddr_str
, "", addr
);
2960 char *preg_str
= get_cell ();
2961 switch (sizeof (t_reg
))
2964 sprintf (preg_str
, "%08lx%08lx",
2965 (unsigned long) (reg
>> thirty_two
), (unsigned long) (reg
& 0xffffffff));
2968 sprintf (preg_str
, "%08lx", (unsigned long) reg
);
2971 sprintf (preg_str
, "%04x", (unsigned short) (reg
& 0xffff));
2974 sprintf (preg_str
, "%lx", (unsigned long) reg
);
2983 char *preg_str
= get_cell ();
2984 switch (sizeof (t_reg
))
2988 unsigned long high
= (unsigned long) (reg
>> thirty_two
);
2990 sprintf (preg_str
, "%lx", (unsigned long) (reg
& 0xffffffff));
2992 sprintf (preg_str
, "%lx%08lx",
2993 high
, (unsigned long) (reg
& 0xffffffff));
2997 sprintf (preg_str
, "%lx", (unsigned long) reg
);
3000 sprintf (preg_str
, "%x", (unsigned short) (reg
& 0xffff));
3003 sprintf (preg_str
, "%lx", (unsigned long) reg
);
3008 /* Helper functions for INNER_THAN */
3010 core_addr_lessthan (lhs
, rhs
)
3018 core_addr_greaterthan (lhs
, rhs
)