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 "inferior.h" /* for signed_pointer_to_address */
55 #include <readline/readline.h>
58 #define XMALLOC(TYPE) ((TYPE*) xmalloc (sizeof (TYPE)))
60 /* readline defines this. */
63 void (*error_begin_hook
) (void);
65 /* Holds the last error message issued by gdb */
67 static struct ui_file
*gdb_lasterr
;
69 /* Prototypes for local functions */
71 static void vfprintf_maybe_filtered (struct ui_file
*, const char *,
74 static void fputs_maybe_filtered (const char *, struct ui_file
*, int);
76 #if defined (USE_MMALLOC) && !defined (NO_MMCHECK)
77 static void malloc_botch (void);
80 static void prompt_for_continue (void);
82 static void set_width_command (char *, int, struct cmd_list_element
*);
84 static void set_width (void);
86 /* Chain of cleanup actions established with make_cleanup,
87 to be executed if an error happens. */
89 static struct cleanup
*cleanup_chain
; /* cleaned up after a failed command */
90 static struct cleanup
*final_cleanup_chain
; /* cleaned up when gdb exits */
91 static struct cleanup
*run_cleanup_chain
; /* cleaned up on each 'run' */
92 static struct cleanup
*exec_cleanup_chain
; /* cleaned up on each execution command */
93 /* cleaned up on each error from within an execution command */
94 static struct cleanup
*exec_error_cleanup_chain
;
96 /* Pointer to what is left to do for an execution command after the
97 target stops. Used only in asynchronous mode, by targets that
98 support async execution. The finish and until commands use it. So
99 does the target extended-remote command. */
100 struct continuation
*cmd_continuation
;
101 struct continuation
*intermediate_continuation
;
103 /* Nonzero if we have job control. */
107 /* Nonzero means a quit has been requested. */
111 /* Nonzero means quit immediately if Control-C is typed now, rather
112 than waiting until QUIT is executed. Be careful in setting this;
113 code which executes with immediate_quit set has to be very careful
114 about being able to deal with being interrupted at any time. It is
115 almost always better to use QUIT; the only exception I can think of
116 is being able to quit out of a system call (using EINTR loses if
117 the SIGINT happens between the previous QUIT and the system call).
118 To immediately quit in the case in which a SIGINT happens between
119 the previous QUIT and setting immediate_quit (desirable anytime we
120 expect to block), call QUIT after setting immediate_quit. */
124 /* Nonzero means that encoded C++ names should be printed out in their
125 C++ form rather than raw. */
129 /* Nonzero means that encoded C++ names should be printed out in their
130 C++ form even in assembler language displays. If this is set, but
131 DEMANGLE is zero, names are printed raw, i.e. DEMANGLE controls. */
133 int asm_demangle
= 0;
135 /* Nonzero means that strings with character values >0x7F should be printed
136 as octal escapes. Zero means just print the value (e.g. it's an
137 international character, and the terminal or window can cope.) */
139 int sevenbit_strings
= 0;
141 /* String to be printed before error messages, if any. */
143 char *error_pre_print
;
145 /* String to be printed before quit messages, if any. */
147 char *quit_pre_print
;
149 /* String to be printed before warning messages, if any. */
151 char *warning_pre_print
= "\nwarning: ";
153 int pagination_enabled
= 1;
156 /* Add a new cleanup to the cleanup_chain,
157 and return the previous chain pointer
158 to be passed later to do_cleanups or discard_cleanups.
159 Args are FUNCTION to clean up with, and ARG to pass to it. */
162 make_cleanup (make_cleanup_ftype
*function
, void *arg
)
164 return make_my_cleanup (&cleanup_chain
, function
, arg
);
168 make_final_cleanup (make_cleanup_ftype
*function
, void *arg
)
170 return make_my_cleanup (&final_cleanup_chain
, function
, arg
);
174 make_run_cleanup (make_cleanup_ftype
*function
, void *arg
)
176 return make_my_cleanup (&run_cleanup_chain
, function
, arg
);
180 make_exec_cleanup (make_cleanup_ftype
*function
, void *arg
)
182 return make_my_cleanup (&exec_cleanup_chain
, function
, arg
);
186 make_exec_error_cleanup (make_cleanup_ftype
*function
, void *arg
)
188 return make_my_cleanup (&exec_error_cleanup_chain
, function
, arg
);
192 do_freeargv (void *arg
)
194 freeargv ((char **) arg
);
198 make_cleanup_freeargv (char **arg
)
200 return make_my_cleanup (&cleanup_chain
, do_freeargv
, arg
);
204 do_bfd_close_cleanup (void *arg
)
210 make_cleanup_bfd_close (bfd
*abfd
)
212 return make_cleanup (do_bfd_close_cleanup
, abfd
);
216 do_close_cleanup (void *arg
)
222 make_cleanup_close (int fd
)
224 /* int into void*. Outch!! */
225 return make_cleanup (do_close_cleanup
, (void *) fd
);
229 do_ui_file_delete (void *arg
)
231 ui_file_delete (arg
);
235 make_cleanup_ui_file_delete (struct ui_file
*arg
)
237 return make_my_cleanup (&cleanup_chain
, do_ui_file_delete
, arg
);
241 make_my_cleanup (struct cleanup
**pmy_chain
, make_cleanup_ftype
*function
,
244 register struct cleanup
*new
245 = (struct cleanup
*) xmalloc (sizeof (struct cleanup
));
246 register struct cleanup
*old_chain
= *pmy_chain
;
248 new->next
= *pmy_chain
;
249 new->function
= function
;
256 /* Discard cleanups and do the actions they describe
257 until we get back to the point OLD_CHAIN in the cleanup_chain. */
260 do_cleanups (register struct cleanup
*old_chain
)
262 do_my_cleanups (&cleanup_chain
, old_chain
);
266 do_final_cleanups (register struct cleanup
*old_chain
)
268 do_my_cleanups (&final_cleanup_chain
, old_chain
);
272 do_run_cleanups (register struct cleanup
*old_chain
)
274 do_my_cleanups (&run_cleanup_chain
, old_chain
);
278 do_exec_cleanups (register struct cleanup
*old_chain
)
280 do_my_cleanups (&exec_cleanup_chain
, old_chain
);
284 do_exec_error_cleanups (register struct cleanup
*old_chain
)
286 do_my_cleanups (&exec_error_cleanup_chain
, old_chain
);
290 do_my_cleanups (register struct cleanup
**pmy_chain
,
291 register struct cleanup
*old_chain
)
293 register struct cleanup
*ptr
;
294 while ((ptr
= *pmy_chain
) != old_chain
)
296 *pmy_chain
= ptr
->next
; /* Do this first incase recursion */
297 (*ptr
->function
) (ptr
->arg
);
302 /* Discard cleanups, not doing the actions they describe,
303 until we get back to the point OLD_CHAIN in the cleanup_chain. */
306 discard_cleanups (register struct cleanup
*old_chain
)
308 discard_my_cleanups (&cleanup_chain
, old_chain
);
312 discard_final_cleanups (register struct cleanup
*old_chain
)
314 discard_my_cleanups (&final_cleanup_chain
, old_chain
);
318 discard_exec_error_cleanups (register struct cleanup
*old_chain
)
320 discard_my_cleanups (&exec_error_cleanup_chain
, old_chain
);
324 discard_my_cleanups (register struct cleanup
**pmy_chain
,
325 register struct cleanup
*old_chain
)
327 register struct cleanup
*ptr
;
328 while ((ptr
= *pmy_chain
) != old_chain
)
330 *pmy_chain
= ptr
->next
;
335 /* Set the cleanup_chain to 0, and return the old cleanup chain. */
339 return save_my_cleanups (&cleanup_chain
);
343 save_final_cleanups (void)
345 return save_my_cleanups (&final_cleanup_chain
);
349 save_my_cleanups (struct cleanup
**pmy_chain
)
351 struct cleanup
*old_chain
= *pmy_chain
;
357 /* Restore the cleanup chain from a previously saved chain. */
359 restore_cleanups (struct cleanup
*chain
)
361 restore_my_cleanups (&cleanup_chain
, chain
);
365 restore_final_cleanups (struct cleanup
*chain
)
367 restore_my_cleanups (&final_cleanup_chain
, chain
);
371 restore_my_cleanups (struct cleanup
**pmy_chain
, struct cleanup
*chain
)
376 /* This function is useful for cleanups.
380 old_chain = make_cleanup (free_current_contents, &foo);
382 to arrange to free the object thus allocated. */
385 free_current_contents (void *ptr
)
387 void **location
= ptr
;
388 if (location
== NULL
)
389 internal_error ("free_current_contents: NULL pointer");
390 if (*location
!= NULL
)
397 /* Provide a known function that does nothing, to use as a base for
398 for a possibly long chain of cleanups. This is useful where we
399 use the cleanup chain for handling normal cleanups as well as dealing
400 with cleanups that need to be done as a result of a call to error().
401 In such cases, we may not be certain where the first cleanup is, unless
402 we have a do-nothing one to always use as the base. */
406 null_cleanup (void *arg
)
410 /* Add a continuation to the continuation list, the global list
411 cmd_continuation. The new continuation will be added at the front.*/
413 add_continuation (void (*continuation_hook
) (struct continuation_arg
*),
414 struct continuation_arg
*arg_list
)
416 struct continuation
*continuation_ptr
;
418 continuation_ptr
= (struct continuation
*) xmalloc (sizeof (struct continuation
));
419 continuation_ptr
->continuation_hook
= continuation_hook
;
420 continuation_ptr
->arg_list
= arg_list
;
421 continuation_ptr
->next
= cmd_continuation
;
422 cmd_continuation
= continuation_ptr
;
425 /* Walk down the cmd_continuation list, and execute all the
426 continuations. There is a problem though. In some cases new
427 continuations may be added while we are in the middle of this
428 loop. If this happens they will be added in the front, and done
429 before we have a chance of exhausting those that were already
430 there. We need to then save the beginning of the list in a pointer
431 and do the continuations from there on, instead of using the
432 global beginning of list as our iteration pointer.*/
434 do_all_continuations (void)
436 struct continuation
*continuation_ptr
;
437 struct continuation
*saved_continuation
;
439 /* Copy the list header into another pointer, and set the global
440 list header to null, so that the global list can change as a side
441 effect of invoking the continuations and the processing of
442 the preexisting continuations will not be affected. */
443 continuation_ptr
= cmd_continuation
;
444 cmd_continuation
= NULL
;
446 /* Work now on the list we have set aside. */
447 while (continuation_ptr
)
449 (continuation_ptr
->continuation_hook
) (continuation_ptr
->arg_list
);
450 saved_continuation
= continuation_ptr
;
451 continuation_ptr
= continuation_ptr
->next
;
452 free (saved_continuation
);
456 /* Walk down the cmd_continuation list, and get rid of all the
459 discard_all_continuations (void)
461 struct continuation
*continuation_ptr
;
463 while (cmd_continuation
)
465 continuation_ptr
= cmd_continuation
;
466 cmd_continuation
= continuation_ptr
->next
;
467 free (continuation_ptr
);
471 /* Add a continuation to the continuation list, the global list
472 intermediate_continuation. The new continuation will be added at the front.*/
474 add_intermediate_continuation (void (*continuation_hook
)
475 (struct continuation_arg
*),
476 struct continuation_arg
*arg_list
)
478 struct continuation
*continuation_ptr
;
480 continuation_ptr
= (struct continuation
*) xmalloc (sizeof (struct continuation
));
481 continuation_ptr
->continuation_hook
= continuation_hook
;
482 continuation_ptr
->arg_list
= arg_list
;
483 continuation_ptr
->next
= intermediate_continuation
;
484 intermediate_continuation
= continuation_ptr
;
487 /* Walk down the cmd_continuation list, and execute all the
488 continuations. There is a problem though. In some cases new
489 continuations may be added while we are in the middle of this
490 loop. If this happens they will be added in the front, and done
491 before we have a chance of exhausting those that were already
492 there. We need to then save the beginning of the list in a pointer
493 and do the continuations from there on, instead of using the
494 global beginning of list as our iteration pointer.*/
496 do_all_intermediate_continuations (void)
498 struct continuation
*continuation_ptr
;
499 struct continuation
*saved_continuation
;
501 /* Copy the list header into another pointer, and set the global
502 list header to null, so that the global list can change as a side
503 effect of invoking the continuations and the processing of
504 the preexisting continuations will not be affected. */
505 continuation_ptr
= intermediate_continuation
;
506 intermediate_continuation
= NULL
;
508 /* Work now on the list we have set aside. */
509 while (continuation_ptr
)
511 (continuation_ptr
->continuation_hook
) (continuation_ptr
->arg_list
);
512 saved_continuation
= continuation_ptr
;
513 continuation_ptr
= continuation_ptr
->next
;
514 free (saved_continuation
);
518 /* Walk down the cmd_continuation list, and get rid of all the
521 discard_all_intermediate_continuations (void)
523 struct continuation
*continuation_ptr
;
525 while (intermediate_continuation
)
527 continuation_ptr
= intermediate_continuation
;
528 intermediate_continuation
= continuation_ptr
->next
;
529 free (continuation_ptr
);
535 /* Print a warning message. Way to use this is to call warning_begin,
536 output the warning message (use unfiltered output to gdb_stderr),
537 ending in a newline. There is not currently a warning_end that you
538 call afterwards, but such a thing might be added if it is useful
539 for a GUI to separate warning messages from other output.
541 FIXME: Why do warnings use unfiltered output and errors filtered?
542 Is this anything other than a historical accident? */
547 target_terminal_ours ();
548 wrap_here (""); /* Force out any buffered output */
549 gdb_flush (gdb_stdout
);
550 if (warning_pre_print
)
551 fprintf_unfiltered (gdb_stderr
, warning_pre_print
);
554 /* Print a warning message.
555 The first argument STRING is the warning message, used as a fprintf string,
556 and the remaining args are passed as arguments to it.
557 The primary difference between warnings and errors is that a warning
558 does not force the return to command level. */
561 warning (const char *string
,...)
564 va_start (args
, string
);
566 (*warning_hook
) (string
, args
);
570 vfprintf_unfiltered (gdb_stderr
, string
, args
);
571 fprintf_unfiltered (gdb_stderr
, "\n");
576 /* Start the printing of an error message. Way to use this is to call
577 this, output the error message (use filtered output to gdb_stderr
578 (FIXME: Some callers, like memory_error, use gdb_stdout)), ending
579 in a newline, and then call return_to_top_level (RETURN_ERROR).
580 error() provides a convenient way to do this for the special case
581 that the error message can be formatted with a single printf call,
582 but this is more general. */
586 if (error_begin_hook
)
589 target_terminal_ours ();
590 wrap_here (""); /* Force out any buffered output */
591 gdb_flush (gdb_stdout
);
593 annotate_error_begin ();
596 fprintf_filtered (gdb_stderr
, error_pre_print
);
599 /* Print an error message and return to command level.
600 The first argument STRING is the error message, used as a fprintf string,
601 and the remaining args are passed as arguments to it. */
604 verror (const char *string
, va_list args
)
607 struct cleanup
*err_string_cleanup
;
608 /* FIXME: cagney/1999-11-10: All error calls should come here.
609 Unfortunately some code uses the sequence: error_begin(); print
610 error message; return_to_top_level. That code should be
613 /* NOTE: It's tempting to just do the following...
614 vfprintf_filtered (gdb_stderr, string, args);
615 and then follow with a similar looking statement to cause the message
616 to also go to gdb_lasterr. But if we do this, we'll be traversing the
617 va_list twice which works on some platforms and fails miserably on
619 /* Save it as the last error */
620 ui_file_rewind (gdb_lasterr
);
621 vfprintf_filtered (gdb_lasterr
, string
, args
);
622 /* Retrieve the last error and print it to gdb_stderr */
623 err_string
= error_last_message ();
624 err_string_cleanup
= make_cleanup (free
, err_string
);
625 fputs_filtered (err_string
, gdb_stderr
);
626 fprintf_filtered (gdb_stderr
, "\n");
627 do_cleanups (err_string_cleanup
);
628 return_to_top_level (RETURN_ERROR
);
632 error (const char *string
,...)
635 va_start (args
, string
);
636 verror (string
, args
);
641 error_stream (struct ui_file
*stream
)
644 char *msg
= ui_file_xstrdup (stream
, &size
);
645 make_cleanup (free
, msg
);
649 /* Get the last error message issued by gdb */
652 error_last_message (void)
655 return ui_file_xstrdup (gdb_lasterr
, &len
);
658 /* This is to be called by main() at the very beginning */
663 gdb_lasterr
= mem_fileopen ();
666 /* Print a message reporting an internal error. Ask the user if they
667 want to continue, dump core, or just exit. */
670 internal_verror (const char *fmt
, va_list ap
)
672 static char msg
[] = "Internal GDB error: recursive internal error.\n";
673 static int dejavu
= 0;
677 /* don't allow infinite error recursion. */
685 fputs_unfiltered (msg
, gdb_stderr
);
689 write (STDERR_FILENO
, msg
, sizeof (msg
));
693 /* Try to get the message out */
694 target_terminal_ours ();
695 fputs_unfiltered ("gdb-internal-error: ", gdb_stderr
);
696 vfprintf_unfiltered (gdb_stderr
, fmt
, ap
);
697 fputs_unfiltered ("\n", gdb_stderr
);
699 /* Default (no case) is to quit GDB. When in batch mode this
700 lessens the likelhood of GDB going into an infinate loop. */
701 continue_p
= query ("\
702 An internal GDB error was detected. This may make further\n\
703 debugging unreliable. Continue this debugging session? ");
705 /* Default (no case) is to not dump core. Lessen the chance of GDB
706 leaving random core files around. */
707 dump_core_p
= query ("\
708 Create a core file containing the current state of GDB? ");
727 return_to_top_level (RETURN_ERROR
);
731 internal_error (char *string
, ...)
734 va_start (ap
, string
);
736 internal_verror (string
, ap
);
740 /* The strerror() function can return NULL for errno values that are
741 out of range. Provide a "safe" version that always returns a
745 safe_strerror (int errnum
)
750 if ((msg
= strerror (errnum
)) == NULL
)
752 sprintf (buf
, "(undocumented errno %d)", errnum
);
758 /* Print the system error message for errno, and also mention STRING
759 as the file name for which the error was encountered.
760 Then return to command level. */
763 perror_with_name (char *string
)
768 err
= safe_strerror (errno
);
769 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
770 strcpy (combined
, string
);
771 strcat (combined
, ": ");
772 strcat (combined
, err
);
774 /* I understand setting these is a matter of taste. Still, some people
775 may clear errno but not know about bfd_error. Doing this here is not
777 bfd_set_error (bfd_error_no_error
);
780 error ("%s.", combined
);
783 /* Print the system error message for ERRCODE, and also mention STRING
784 as the file name for which the error was encountered. */
787 print_sys_errmsg (char *string
, int errcode
)
792 err
= safe_strerror (errcode
);
793 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
794 strcpy (combined
, string
);
795 strcat (combined
, ": ");
796 strcat (combined
, err
);
798 /* We want anything which was printed on stdout to come out first, before
800 gdb_flush (gdb_stdout
);
801 fprintf_unfiltered (gdb_stderr
, "%s.\n", combined
);
804 /* Control C eventually causes this to be called, at a convenient time. */
809 serial_t gdb_stdout_serial
= serial_fdopen (1);
811 target_terminal_ours ();
813 /* We want all output to appear now, before we print "Quit". We
814 have 3 levels of buffering we have to flush (it's possible that
815 some of these should be changed to flush the lower-level ones
818 /* 1. The _filtered buffer. */
819 wrap_here ((char *) 0);
821 /* 2. The stdio buffer. */
822 gdb_flush (gdb_stdout
);
823 gdb_flush (gdb_stderr
);
825 /* 3. The system-level buffer. */
826 SERIAL_DRAIN_OUTPUT (gdb_stdout_serial
);
827 SERIAL_UN_FDOPEN (gdb_stdout_serial
);
829 annotate_error_begin ();
831 /* Don't use *_filtered; we don't want to prompt the user to continue. */
833 fprintf_unfiltered (gdb_stderr
, quit_pre_print
);
836 /* No steenking SIGINT will ever be coming our way when the
837 program is resumed. Don't lie. */
838 fprintf_unfiltered (gdb_stderr
, "Quit\n");
841 /* If there is no terminal switching for this target, then we can't
842 possibly get screwed by the lack of job control. */
843 || current_target
.to_terminal_ours
== NULL
)
844 fprintf_unfiltered (gdb_stderr
, "Quit\n");
846 fprintf_unfiltered (gdb_stderr
,
847 "Quit (expect signal SIGINT when the program is resumed)\n");
849 return_to_top_level (RETURN_QUIT
);
853 #if defined(_MSC_VER) /* should test for wingdb instead? */
856 * Windows translates all keyboard and mouse events
857 * into a message which is appended to the message
858 * queue for the process.
864 int k
= win32pollquit ();
871 #else /* !defined(_MSC_VER) */
876 /* Done by signals */
879 #endif /* !defined(_MSC_VER) */
881 /* Control C comes here */
883 request_quit (int signo
)
886 /* Restore the signal handler. Harmless with BSD-style signals, needed
887 for System V-style signals. So just always do it, rather than worrying
888 about USG defines and stuff like that. */
889 signal (signo
, request_quit
);
899 /* Memory management stuff (malloc friends). */
901 /* Make a substitute size_t for non-ANSI compilers. */
903 #ifndef HAVE_STDDEF_H
905 #define size_t unsigned int
909 #if !defined (USE_MMALLOC)
912 mcalloc (PTR md
, size_t number
, size_t size
)
914 return calloc (number
, size
);
918 mmalloc (PTR md
, size_t size
)
920 return malloc (size
);
924 mrealloc (PTR md
, PTR ptr
, size_t size
)
926 if (ptr
== 0) /* Guard against old realloc's */
927 return malloc (size
);
929 return realloc (ptr
, size
);
933 mfree (PTR md
, PTR ptr
)
938 #endif /* USE_MMALLOC */
940 #if !defined (USE_MMALLOC) || defined (NO_MMCHECK)
943 init_malloc (void *md
)
947 #else /* Have mmalloc and want corruption checking */
952 fprintf_unfiltered (gdb_stderr
, "Memory corruption\n");
956 /* Attempt to install hooks in mmalloc/mrealloc/mfree for the heap specified
957 by MD, to detect memory corruption. Note that MD may be NULL to specify
958 the default heap that grows via sbrk.
960 Note that for freshly created regions, we must call mmcheckf prior to any
961 mallocs in the region. Otherwise, any region which was allocated prior to
962 installing the checking hooks, which is later reallocated or freed, will
963 fail the checks! The mmcheck function only allows initial hooks to be
964 installed before the first mmalloc. However, anytime after we have called
965 mmcheck the first time to install the checking hooks, we can call it again
966 to update the function pointer to the memory corruption handler.
968 Returns zero on failure, non-zero on success. */
970 #ifndef MMCHECK_FORCE
971 #define MMCHECK_FORCE 0
975 init_malloc (void *md
)
977 if (!mmcheckf (md
, malloc_botch
, MMCHECK_FORCE
))
979 /* Don't use warning(), which relies on current_target being set
980 to something other than dummy_target, until after
981 initialize_all_files(). */
984 (gdb_stderr
, "warning: failed to install memory consistency checks; ");
986 (gdb_stderr
, "configuration should define NO_MMCHECK or MMCHECK_FORCE\n");
992 #endif /* Have mmalloc and want corruption checking */
994 /* Called when a memory allocation fails, with the number of bytes of
995 memory requested in SIZE. */
1002 internal_error ("virtual memory exhausted: can't allocate %ld bytes.", size
);
1006 internal_error ("virtual memory exhausted.");
1010 /* Like mmalloc but get error if no storage available, and protect against
1011 the caller wanting to allocate zero bytes. Whether to return NULL for
1012 a zero byte request, or translate the request into a request for one
1013 byte of zero'd storage, is a religious issue. */
1016 xmmalloc (PTR md
, long size
)
1024 else if ((val
= mmalloc (md
, size
)) == NULL
)
1031 /* Like mrealloc but get error if no storage available. */
1034 xmrealloc (PTR md
, PTR ptr
, long size
)
1040 val
= mrealloc (md
, ptr
, size
);
1044 val
= mmalloc (md
, size
);
1053 /* Like malloc but get error if no storage available, and protect against
1054 the caller wanting to allocate zero bytes. */
1057 xmalloc (size_t size
)
1059 return (xmmalloc ((PTR
) NULL
, size
));
1062 /* Like calloc but get error if no storage available */
1065 xcalloc (size_t number
, size_t size
)
1067 void *mem
= mcalloc (NULL
, number
, size
);
1069 nomem (number
* size
);
1073 /* Like mrealloc but get error if no storage available. */
1076 xrealloc (PTR ptr
, size_t size
)
1078 return (xmrealloc ((PTR
) NULL
, ptr
, size
));
1082 /* Like asprintf/vasprintf but get an internal_error if the call
1086 xasprintf (char **ret
, const char *format
, ...)
1089 va_start (args
, format
);
1090 xvasprintf (ret
, format
, args
);
1095 xvasprintf (char **ret
, const char *format
, va_list ap
)
1097 int status
= vasprintf (ret
, format
, ap
);
1098 /* NULL could be returned due to a memory allocation problem; a
1099 badly format string; or something else. */
1101 internal_error ("%s:%d: vasprintf returned NULL buffer (errno %d)",
1102 __FILE__
, __LINE__
, errno
);
1103 /* A negative status with a non-NULL buffer shouldn't never
1104 happen. But to be sure. */
1106 internal_error ("%s:%d: vasprintf call failed (errno %d)",
1107 __FILE__
, __LINE__
, errno
);
1111 /* My replacement for the read system call.
1112 Used like `read' but keeps going if `read' returns too soon. */
1115 myread (int desc
, char *addr
, int len
)
1122 val
= read (desc
, addr
, len
);
1126 return orglen
- len
;
1133 /* Make a copy of the string at PTR with SIZE characters
1134 (and add a null character at the end in the copy).
1135 Uses malloc to get the space. Returns the address of the copy. */
1138 savestring (const char *ptr
, int size
)
1140 register char *p
= (char *) xmalloc (size
+ 1);
1141 memcpy (p
, ptr
, size
);
1147 msavestring (void *md
, const char *ptr
, int size
)
1149 register char *p
= (char *) xmmalloc (md
, size
+ 1);
1150 memcpy (p
, ptr
, size
);
1155 /* The "const" is so it compiles under DGUX (which prototypes strsave
1156 in <string.h>. FIXME: This should be named "xstrsave", shouldn't it?
1157 Doesn't real strsave return NULL if out of memory? */
1159 strsave (const char *ptr
)
1161 return savestring (ptr
, strlen (ptr
));
1165 mstrsave (void *md
, const char *ptr
)
1167 return (msavestring (md
, ptr
, strlen (ptr
)));
1171 print_spaces (register int n
, register struct ui_file
*file
)
1173 fputs_unfiltered (n_spaces (n
), file
);
1176 /* Print a host address. */
1179 gdb_print_host_address (void *addr
, struct ui_file
*stream
)
1182 /* We could use the %p conversion specifier to fprintf if we had any
1183 way of knowing whether this host supports it. But the following
1184 should work on the Alpha and on 32 bit machines. */
1186 fprintf_filtered (stream
, "0x%lx", (unsigned long) addr
);
1189 /* Ask user a y-or-n question and return 1 iff answer is yes.
1190 Takes three args which are given to printf to print the question.
1191 The first, a control string, should end in "? ".
1192 It should not say how to answer, because we do that. */
1196 query (char *ctlstr
,...)
1199 register int answer
;
1203 va_start (args
, ctlstr
);
1207 return query_hook (ctlstr
, args
);
1210 /* Automatically answer "yes" if input is not from a terminal. */
1211 if (!input_from_terminal_p ())
1214 /* FIXME Automatically answer "yes" if called from MacGDB. */
1221 wrap_here (""); /* Flush any buffered output */
1222 gdb_flush (gdb_stdout
);
1224 if (annotation_level
> 1)
1225 printf_filtered ("\n\032\032pre-query\n");
1227 vfprintf_filtered (gdb_stdout
, ctlstr
, args
);
1228 printf_filtered ("(y or n) ");
1230 if (annotation_level
> 1)
1231 printf_filtered ("\n\032\032query\n");
1234 /* If not in MacGDB, move to a new line so the entered line doesn't
1235 have a prompt on the front of it. */
1237 fputs_unfiltered ("\n", gdb_stdout
);
1241 gdb_flush (gdb_stdout
);
1244 if (!tui_version
|| cmdWin
== tuiWinWithFocus ())
1246 answer
= fgetc (stdin
);
1249 answer
= (unsigned char) tuiBufferGetc ();
1252 clearerr (stdin
); /* in case of C-d */
1253 if (answer
== EOF
) /* C-d */
1258 /* Eat rest of input line, to EOF or newline */
1259 if ((answer
!= '\n') || (tui_version
&& answer
!= '\r'))
1263 if (!tui_version
|| cmdWin
== tuiWinWithFocus ())
1265 ans2
= fgetc (stdin
);
1268 ans2
= (unsigned char) tuiBufferGetc ();
1272 while (ans2
!= EOF
&& ans2
!= '\n' && ans2
!= '\r');
1273 TUIDO (((TuiOpaqueFuncPtr
) tui_vStartNewLines
, 1));
1287 printf_filtered ("Please answer y or n.\n");
1290 if (annotation_level
> 1)
1291 printf_filtered ("\n\032\032post-query\n");
1296 /* Parse a C escape sequence. STRING_PTR points to a variable
1297 containing a pointer to the string to parse. That pointer
1298 should point to the character after the \. That pointer
1299 is updated past the characters we use. The value of the
1300 escape sequence is returned.
1302 A negative value means the sequence \ newline was seen,
1303 which is supposed to be equivalent to nothing at all.
1305 If \ is followed by a null character, we return a negative
1306 value and leave the string pointer pointing at the null character.
1308 If \ is followed by 000, we return 0 and leave the string pointer
1309 after the zeros. A value of 0 does not mean end of string. */
1312 parse_escape (char **string_ptr
)
1314 register int c
= *(*string_ptr
)++;
1318 return 007; /* Bell (alert) char */
1321 case 'e': /* Escape character */
1339 c
= *(*string_ptr
)++;
1341 c
= parse_escape (string_ptr
);
1344 return (c
& 0200) | (c
& 037);
1355 register int i
= c
- '0';
1356 register int count
= 0;
1359 if ((c
= *(*string_ptr
)++) >= '0' && c
<= '7')
1377 /* Print the character C on STREAM as part of the contents of a literal
1378 string whose delimiter is QUOTER. Note that this routine should only
1379 be call for printing things which are independent of the language
1380 of the program being debugged. */
1383 printchar (int c
, void (*do_fputs
) (const char *, struct ui_file
*),
1384 void (*do_fprintf
) (struct ui_file
*, const char *, ...),
1385 struct ui_file
*stream
, int quoter
)
1388 c
&= 0xFF; /* Avoid sign bit follies */
1390 if (c
< 0x20 || /* Low control chars */
1391 (c
>= 0x7F && c
< 0xA0) || /* DEL, High controls */
1392 (sevenbit_strings
&& c
>= 0x80))
1393 { /* high order bit set */
1397 do_fputs ("\\n", stream
);
1400 do_fputs ("\\b", stream
);
1403 do_fputs ("\\t", stream
);
1406 do_fputs ("\\f", stream
);
1409 do_fputs ("\\r", stream
);
1412 do_fputs ("\\e", stream
);
1415 do_fputs ("\\a", stream
);
1418 do_fprintf (stream
, "\\%.3o", (unsigned int) c
);
1424 if (c
== '\\' || c
== quoter
)
1425 do_fputs ("\\", stream
);
1426 do_fprintf (stream
, "%c", c
);
1430 /* Print the character C on STREAM as part of the contents of a
1431 literal string whose delimiter is QUOTER. Note that these routines
1432 should only be call for printing things which are independent of
1433 the language of the program being debugged. */
1436 fputstr_filtered (const char *str
, int quoter
, struct ui_file
*stream
)
1439 printchar (*str
++, fputs_filtered
, fprintf_filtered
, stream
, quoter
);
1443 fputstr_unfiltered (const char *str
, int quoter
, struct ui_file
*stream
)
1446 printchar (*str
++, fputs_unfiltered
, fprintf_unfiltered
, stream
, quoter
);
1450 fputstrn_unfiltered (const char *str
, int n
, int quoter
, struct ui_file
*stream
)
1453 for (i
= 0; i
< n
; i
++)
1454 printchar (str
[i
], fputs_unfiltered
, fprintf_unfiltered
, stream
, quoter
);
1459 /* Number of lines per page or UINT_MAX if paging is disabled. */
1460 static unsigned int lines_per_page
;
1461 /* Number of chars per line or UINT_MAX if line folding is disabled. */
1462 static unsigned int chars_per_line
;
1463 /* Current count of lines printed on this page, chars on this line. */
1464 static unsigned int lines_printed
, chars_printed
;
1466 /* Buffer and start column of buffered text, for doing smarter word-
1467 wrapping. When someone calls wrap_here(), we start buffering output
1468 that comes through fputs_filtered(). If we see a newline, we just
1469 spit it out and forget about the wrap_here(). If we see another
1470 wrap_here(), we spit it out and remember the newer one. If we see
1471 the end of the line, we spit out a newline, the indent, and then
1472 the buffered output. */
1474 /* Malloc'd buffer with chars_per_line+2 bytes. Contains characters which
1475 are waiting to be output (they have already been counted in chars_printed).
1476 When wrap_buffer[0] is null, the buffer is empty. */
1477 static char *wrap_buffer
;
1479 /* Pointer in wrap_buffer to the next character to fill. */
1480 static char *wrap_pointer
;
1482 /* String to indent by if the wrap occurs. Must not be NULL if wrap_column
1484 static char *wrap_indent
;
1486 /* Column number on the screen where wrap_buffer begins, or 0 if wrapping
1487 is not in effect. */
1488 static int wrap_column
;
1491 /* Inialize the lines and chars per page */
1493 init_page_info (void)
1496 if (tui_version
&& m_winPtrNotNull (cmdWin
))
1498 lines_per_page
= cmdWin
->generic
.height
;
1499 chars_per_line
= cmdWin
->generic
.width
;
1504 /* These defaults will be used if we are unable to get the correct
1505 values from termcap. */
1506 #if defined(__GO32__)
1507 lines_per_page
= ScreenRows ();
1508 chars_per_line
= ScreenCols ();
1510 lines_per_page
= 24;
1511 chars_per_line
= 80;
1513 #if !defined (MPW) && !defined (_WIN32)
1514 /* No termcap under MPW, although might be cool to do something
1515 by looking at worksheet or console window sizes. */
1516 /* Initialize the screen height and width from termcap. */
1518 char *termtype
= getenv ("TERM");
1520 /* Positive means success, nonpositive means failure. */
1523 /* 2048 is large enough for all known terminals, according to the
1524 GNU termcap manual. */
1525 char term_buffer
[2048];
1529 status
= tgetent (term_buffer
, termtype
);
1533 int running_in_emacs
= getenv ("EMACS") != NULL
;
1535 val
= tgetnum ("li");
1536 if (val
>= 0 && !running_in_emacs
)
1537 lines_per_page
= val
;
1539 /* The number of lines per page is not mentioned
1540 in the terminal description. This probably means
1541 that paging is not useful (e.g. emacs shell window),
1542 so disable paging. */
1543 lines_per_page
= UINT_MAX
;
1545 val
= tgetnum ("co");
1547 chars_per_line
= val
;
1553 #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER)
1555 /* If there is a better way to determine the window size, use it. */
1556 SIGWINCH_HANDLER (SIGWINCH
);
1559 /* If the output is not a terminal, don't paginate it. */
1560 if (!ui_file_isatty (gdb_stdout
))
1561 lines_per_page
= UINT_MAX
;
1562 } /* the command_line_version */
1569 if (chars_per_line
== 0)
1574 wrap_buffer
= (char *) xmalloc (chars_per_line
+ 2);
1575 wrap_buffer
[0] = '\0';
1578 wrap_buffer
= (char *) xrealloc (wrap_buffer
, chars_per_line
+ 2);
1579 wrap_pointer
= wrap_buffer
; /* Start it at the beginning */
1584 set_width_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
1589 /* Wait, so the user can read what's on the screen. Prompt the user
1590 to continue by pressing RETURN. */
1593 prompt_for_continue (void)
1596 char cont_prompt
[120];
1598 if (annotation_level
> 1)
1599 printf_unfiltered ("\n\032\032pre-prompt-for-continue\n");
1601 strcpy (cont_prompt
,
1602 "---Type <return> to continue, or q <return> to quit---");
1603 if (annotation_level
> 1)
1604 strcat (cont_prompt
, "\n\032\032prompt-for-continue\n");
1606 /* We must do this *before* we call gdb_readline, else it will eventually
1607 call us -- thinking that we're trying to print beyond the end of the
1609 reinitialize_more_filter ();
1612 /* On a real operating system, the user can quit with SIGINT.
1615 'q' is provided on all systems so users don't have to change habits
1616 from system to system, and because telling them what to do in
1617 the prompt is more user-friendly than expecting them to think of
1619 /* Call readline, not gdb_readline, because GO32 readline handles control-C
1620 whereas control-C to gdb_readline will cause the user to get dumped
1622 ignore
= readline (cont_prompt
);
1624 if (annotation_level
> 1)
1625 printf_unfiltered ("\n\032\032post-prompt-for-continue\n");
1630 while (*p
== ' ' || *p
== '\t')
1635 request_quit (SIGINT
);
1637 async_request_quit (0);
1643 /* Now we have to do this again, so that GDB will know that it doesn't
1644 need to save the ---Type <return>--- line at the top of the screen. */
1645 reinitialize_more_filter ();
1647 dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */
1650 /* Reinitialize filter; ie. tell it to reset to original values. */
1653 reinitialize_more_filter (void)
1659 /* Indicate that if the next sequence of characters overflows the line,
1660 a newline should be inserted here rather than when it hits the end.
1661 If INDENT is non-null, it is a string to be printed to indent the
1662 wrapped part on the next line. INDENT must remain accessible until
1663 the next call to wrap_here() or until a newline is printed through
1666 If the line is already overfull, we immediately print a newline and
1667 the indentation, and disable further wrapping.
1669 If we don't know the width of lines, but we know the page height,
1670 we must not wrap words, but should still keep track of newlines
1671 that were explicitly printed.
1673 INDENT should not contain tabs, as that will mess up the char count
1674 on the next line. FIXME.
1676 This routine is guaranteed to force out any output which has been
1677 squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be
1678 used to force out output from the wrap_buffer. */
1681 wrap_here (char *indent
)
1683 /* This should have been allocated, but be paranoid anyway. */
1689 *wrap_pointer
= '\0';
1690 fputs_unfiltered (wrap_buffer
, gdb_stdout
);
1692 wrap_pointer
= wrap_buffer
;
1693 wrap_buffer
[0] = '\0';
1694 if (chars_per_line
== UINT_MAX
) /* No line overflow checking */
1698 else if (chars_printed
>= chars_per_line
)
1700 puts_filtered ("\n");
1702 puts_filtered (indent
);
1707 wrap_column
= chars_printed
;
1711 wrap_indent
= indent
;
1715 /* Ensure that whatever gets printed next, using the filtered output
1716 commands, starts at the beginning of the line. I.E. if there is
1717 any pending output for the current line, flush it and start a new
1718 line. Otherwise do nothing. */
1723 if (chars_printed
> 0)
1725 puts_filtered ("\n");
1730 /* Like fputs but if FILTER is true, pause after every screenful.
1732 Regardless of FILTER can wrap at points other than the final
1733 character of a line.
1735 Unlike fputs, fputs_maybe_filtered does not return a value.
1736 It is OK for LINEBUFFER to be NULL, in which case just don't print
1739 Note that a longjmp to top level may occur in this routine (only if
1740 FILTER is true) (since prompt_for_continue may do so) so this
1741 routine should not be called when cleanups are not in place. */
1744 fputs_maybe_filtered (const char *linebuffer
, struct ui_file
*stream
,
1747 const char *lineptr
;
1749 if (linebuffer
== 0)
1752 /* Don't do any filtering if it is disabled. */
1753 if ((stream
!= gdb_stdout
) || !pagination_enabled
1754 || (lines_per_page
== UINT_MAX
&& chars_per_line
== UINT_MAX
))
1756 fputs_unfiltered (linebuffer
, stream
);
1760 /* Go through and output each character. Show line extension
1761 when this is necessary; prompt user for new page when this is
1764 lineptr
= linebuffer
;
1767 /* Possible new page. */
1769 (lines_printed
>= lines_per_page
- 1))
1770 prompt_for_continue ();
1772 while (*lineptr
&& *lineptr
!= '\n')
1774 /* Print a single line. */
1775 if (*lineptr
== '\t')
1778 *wrap_pointer
++ = '\t';
1780 fputc_unfiltered ('\t', stream
);
1781 /* Shifting right by 3 produces the number of tab stops
1782 we have already passed, and then adding one and
1783 shifting left 3 advances to the next tab stop. */
1784 chars_printed
= ((chars_printed
>> 3) + 1) << 3;
1790 *wrap_pointer
++ = *lineptr
;
1792 fputc_unfiltered (*lineptr
, stream
);
1797 if (chars_printed
>= chars_per_line
)
1799 unsigned int save_chars
= chars_printed
;
1803 /* If we aren't actually wrapping, don't output newline --
1804 if chars_per_line is right, we probably just overflowed
1805 anyway; if it's wrong, let us keep going. */
1807 fputc_unfiltered ('\n', stream
);
1809 /* Possible new page. */
1810 if (lines_printed
>= lines_per_page
- 1)
1811 prompt_for_continue ();
1813 /* Now output indentation and wrapped string */
1816 fputs_unfiltered (wrap_indent
, stream
);
1817 *wrap_pointer
= '\0'; /* Null-terminate saved stuff */
1818 fputs_unfiltered (wrap_buffer
, stream
); /* and eject it */
1819 /* FIXME, this strlen is what prevents wrap_indent from
1820 containing tabs. However, if we recurse to print it
1821 and count its chars, we risk trouble if wrap_indent is
1822 longer than (the user settable) chars_per_line.
1823 Note also that this can set chars_printed > chars_per_line
1824 if we are printing a long string. */
1825 chars_printed
= strlen (wrap_indent
)
1826 + (save_chars
- wrap_column
);
1827 wrap_pointer
= wrap_buffer
; /* Reset buffer */
1828 wrap_buffer
[0] = '\0';
1829 wrap_column
= 0; /* And disable fancy wrap */
1834 if (*lineptr
== '\n')
1837 wrap_here ((char *) 0); /* Spit out chars, cancel further wraps */
1839 fputc_unfiltered ('\n', stream
);
1846 fputs_filtered (const char *linebuffer
, struct ui_file
*stream
)
1848 fputs_maybe_filtered (linebuffer
, stream
, 1);
1852 putchar_unfiltered (int c
)
1855 ui_file_write (gdb_stdout
, &buf
, 1);
1860 fputc_unfiltered (int c
, struct ui_file
*stream
)
1863 ui_file_write (stream
, &buf
, 1);
1868 fputc_filtered (int c
, struct ui_file
*stream
)
1874 fputs_filtered (buf
, stream
);
1878 /* puts_debug is like fputs_unfiltered, except it prints special
1879 characters in printable fashion. */
1882 puts_debug (char *prefix
, char *string
, char *suffix
)
1886 /* Print prefix and suffix after each line. */
1887 static int new_line
= 1;
1888 static int return_p
= 0;
1889 static char *prev_prefix
= "";
1890 static char *prev_suffix
= "";
1892 if (*string
== '\n')
1895 /* If the prefix is changing, print the previous suffix, a new line,
1896 and the new prefix. */
1897 if ((return_p
|| (strcmp (prev_prefix
, prefix
) != 0)) && !new_line
)
1899 fputs_unfiltered (prev_suffix
, gdb_stdlog
);
1900 fputs_unfiltered ("\n", gdb_stdlog
);
1901 fputs_unfiltered (prefix
, gdb_stdlog
);
1904 /* Print prefix if we printed a newline during the previous call. */
1908 fputs_unfiltered (prefix
, gdb_stdlog
);
1911 prev_prefix
= prefix
;
1912 prev_suffix
= suffix
;
1914 /* Output characters in a printable format. */
1915 while ((ch
= *string
++) != '\0')
1921 fputc_unfiltered (ch
, gdb_stdlog
);
1924 fprintf_unfiltered (gdb_stdlog
, "\\x%02x", ch
& 0xff);
1928 fputs_unfiltered ("\\\\", gdb_stdlog
);
1931 fputs_unfiltered ("\\b", gdb_stdlog
);
1934 fputs_unfiltered ("\\f", gdb_stdlog
);
1938 fputs_unfiltered ("\\n", gdb_stdlog
);
1941 fputs_unfiltered ("\\r", gdb_stdlog
);
1944 fputs_unfiltered ("\\t", gdb_stdlog
);
1947 fputs_unfiltered ("\\v", gdb_stdlog
);
1951 return_p
= ch
== '\r';
1954 /* Print suffix if we printed a newline. */
1957 fputs_unfiltered (suffix
, gdb_stdlog
);
1958 fputs_unfiltered ("\n", gdb_stdlog
);
1963 /* Print a variable number of ARGS using format FORMAT. If this
1964 information is going to put the amount written (since the last call
1965 to REINITIALIZE_MORE_FILTER or the last page break) over the page size,
1966 call prompt_for_continue to get the users permision to continue.
1968 Unlike fprintf, this function does not return a value.
1970 We implement three variants, vfprintf (takes a vararg list and stream),
1971 fprintf (takes a stream to write on), and printf (the usual).
1973 Note also that a longjmp to top level may occur in this routine
1974 (since prompt_for_continue may do so) so this routine should not be
1975 called when cleanups are not in place. */
1978 vfprintf_maybe_filtered (struct ui_file
*stream
, const char *format
,
1979 va_list args
, int filter
)
1982 struct cleanup
*old_cleanups
;
1984 xvasprintf (&linebuffer
, format
, args
);
1985 old_cleanups
= make_cleanup (free
, linebuffer
);
1986 fputs_maybe_filtered (linebuffer
, stream
, filter
);
1987 do_cleanups (old_cleanups
);
1992 vfprintf_filtered (struct ui_file
*stream
, const char *format
, va_list args
)
1994 vfprintf_maybe_filtered (stream
, format
, args
, 1);
1998 vfprintf_unfiltered (struct ui_file
*stream
, const char *format
, va_list args
)
2001 struct cleanup
*old_cleanups
;
2003 xvasprintf (&linebuffer
, format
, args
);
2004 old_cleanups
= make_cleanup (free
, linebuffer
);
2005 fputs_unfiltered (linebuffer
, stream
);
2006 do_cleanups (old_cleanups
);
2010 vprintf_filtered (const char *format
, va_list args
)
2012 vfprintf_maybe_filtered (gdb_stdout
, format
, args
, 1);
2016 vprintf_unfiltered (const char *format
, va_list args
)
2018 vfprintf_unfiltered (gdb_stdout
, format
, args
);
2022 fprintf_filtered (struct ui_file
* stream
, const char *format
,...)
2025 va_start (args
, format
);
2026 vfprintf_filtered (stream
, format
, args
);
2031 fprintf_unfiltered (struct ui_file
* stream
, const char *format
,...)
2034 va_start (args
, format
);
2035 vfprintf_unfiltered (stream
, format
, args
);
2039 /* Like fprintf_filtered, but prints its result indented.
2040 Called as fprintfi_filtered (spaces, stream, format, ...); */
2043 fprintfi_filtered (int spaces
, struct ui_file
* stream
, const char *format
,...)
2046 va_start (args
, format
);
2047 print_spaces_filtered (spaces
, stream
);
2049 vfprintf_filtered (stream
, format
, args
);
2055 printf_filtered (const char *format
,...)
2058 va_start (args
, format
);
2059 vfprintf_filtered (gdb_stdout
, format
, args
);
2065 printf_unfiltered (const char *format
,...)
2068 va_start (args
, format
);
2069 vfprintf_unfiltered (gdb_stdout
, format
, args
);
2073 /* Like printf_filtered, but prints it's result indented.
2074 Called as printfi_filtered (spaces, format, ...); */
2077 printfi_filtered (int spaces
, const char *format
,...)
2080 va_start (args
, format
);
2081 print_spaces_filtered (spaces
, gdb_stdout
);
2082 vfprintf_filtered (gdb_stdout
, format
, args
);
2086 /* Easy -- but watch out!
2088 This routine is *not* a replacement for puts()! puts() appends a newline.
2089 This one doesn't, and had better not! */
2092 puts_filtered (const char *string
)
2094 fputs_filtered (string
, gdb_stdout
);
2098 puts_unfiltered (const char *string
)
2100 fputs_unfiltered (string
, gdb_stdout
);
2103 /* Return a pointer to N spaces and a null. The pointer is good
2104 until the next call to here. */
2109 static char *spaces
= 0;
2110 static int max_spaces
= -1;
2116 spaces
= (char *) xmalloc (n
+ 1);
2117 for (t
= spaces
+ n
; t
!= spaces
;)
2123 return spaces
+ max_spaces
- n
;
2126 /* Print N spaces. */
2128 print_spaces_filtered (int n
, struct ui_file
*stream
)
2130 fputs_filtered (n_spaces (n
), stream
);
2133 /* C++ demangler stuff. */
2135 /* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language
2136 LANG, using demangling args ARG_MODE, and print it filtered to STREAM.
2137 If the name is not mangled, or the language for the name is unknown, or
2138 demangling is off, the name is printed in its "raw" form. */
2141 fprintf_symbol_filtered (struct ui_file
*stream
, char *name
, enum language lang
,
2148 /* If user wants to see raw output, no problem. */
2151 fputs_filtered (name
, stream
);
2157 case language_cplus
:
2158 demangled
= cplus_demangle (name
, arg_mode
);
2161 demangled
= cplus_demangle (name
, arg_mode
| DMGL_JAVA
);
2163 case language_chill
:
2164 demangled
= chill_demangle (name
);
2170 fputs_filtered (demangled
? demangled
: name
, stream
);
2171 if (demangled
!= NULL
)
2179 /* Do a strcmp() type operation on STRING1 and STRING2, ignoring any
2180 differences in whitespace. Returns 0 if they match, non-zero if they
2181 don't (slightly different than strcmp()'s range of return values).
2183 As an extra hack, string1=="FOO(ARGS)" matches string2=="FOO".
2184 This "feature" is useful when searching for matching C++ function names
2185 (such as if the user types 'break FOO', where FOO is a mangled C++
2189 strcmp_iw (const char *string1
, const char *string2
)
2191 while ((*string1
!= '\0') && (*string2
!= '\0'))
2193 while (isspace (*string1
))
2197 while (isspace (*string2
))
2201 if (*string1
!= *string2
)
2205 if (*string1
!= '\0')
2211 return (*string1
!= '\0' && *string1
!= '(') || (*string2
!= '\0');
2217 ** Answer whether string_to_compare is a full or partial match to
2218 ** template_string. The partial match must be in sequence starting
2222 subset_compare (char *string_to_compare
, char *template_string
)
2225 if (template_string
!= (char *) NULL
&& string_to_compare
!= (char *) NULL
&&
2226 strlen (string_to_compare
) <= strlen (template_string
))
2227 match
= (strncmp (template_string
,
2229 strlen (string_to_compare
)) == 0);
2236 static void pagination_on_command (char *arg
, int from_tty
);
2238 pagination_on_command (char *arg
, int from_tty
)
2240 pagination_enabled
= 1;
2243 static void pagination_on_command (char *arg
, int from_tty
);
2245 pagination_off_command (char *arg
, int from_tty
)
2247 pagination_enabled
= 0;
2252 initialize_utils (void)
2254 struct cmd_list_element
*c
;
2256 c
= add_set_cmd ("width", class_support
, var_uinteger
,
2257 (char *) &chars_per_line
,
2258 "Set number of characters gdb thinks are in a line.",
2260 add_show_from_set (c
, &showlist
);
2261 c
->function
.sfunc
= set_width_command
;
2264 (add_set_cmd ("height", class_support
,
2265 var_uinteger
, (char *) &lines_per_page
,
2266 "Set number of lines gdb thinks are in a page.", &setlist
),
2271 /* If the output is not a terminal, don't paginate it. */
2272 if (!ui_file_isatty (gdb_stdout
))
2273 lines_per_page
= UINT_MAX
;
2275 set_width_command ((char *) NULL
, 0, c
);
2278 (add_set_cmd ("demangle", class_support
, var_boolean
,
2280 "Set demangling of encoded C++ names when displaying symbols.",
2285 (add_set_cmd ("pagination", class_support
,
2286 var_boolean
, (char *) &pagination_enabled
,
2287 "Set state of pagination.", &setlist
),
2292 add_com ("am", class_support
, pagination_on_command
,
2293 "Enable pagination");
2294 add_com ("sm", class_support
, pagination_off_command
,
2295 "Disable pagination");
2299 (add_set_cmd ("sevenbit-strings", class_support
, var_boolean
,
2300 (char *) &sevenbit_strings
,
2301 "Set printing of 8-bit characters in strings as \\nnn.",
2306 (add_set_cmd ("asm-demangle", class_support
, var_boolean
,
2307 (char *) &asm_demangle
,
2308 "Set demangling of C++ names in disassembly listings.",
2313 /* Machine specific function to handle SIGWINCH signal. */
2315 #ifdef SIGWINCH_HANDLER_BODY
2316 SIGWINCH_HANDLER_BODY
2319 /* Support for converting target fp numbers into host DOUBLEST format. */
2321 /* XXX - This code should really be in libiberty/floatformat.c, however
2322 configuration issues with libiberty made this very difficult to do in the
2325 #include "floatformat.h"
2326 #include <math.h> /* ldexp */
2328 /* The odds that CHAR_BIT will be anything but 8 are low enough that I'm not
2329 going to bother with trying to muck around with whether it is defined in
2330 a system header, what we do if not, etc. */
2331 #define FLOATFORMAT_CHAR_BIT 8
2333 static unsigned long get_field (unsigned char *,
2334 enum floatformat_byteorders
,
2335 unsigned int, unsigned int, unsigned int);
2337 /* Extract a field which starts at START and is LEN bytes long. DATA and
2338 TOTAL_LEN are the thing we are extracting it from, in byteorder ORDER. */
2339 static unsigned long
2340 get_field (unsigned char *data
, enum floatformat_byteorders order
,
2341 unsigned int total_len
, unsigned int start
, unsigned int len
)
2343 unsigned long result
;
2344 unsigned int cur_byte
;
2347 /* Start at the least significant part of the field. */
2348 if (order
== floatformat_little
|| order
== floatformat_littlebyte_bigword
)
2350 /* We start counting from the other end (i.e, from the high bytes
2351 rather than the low bytes). As such, we need to be concerned
2352 with what happens if bit 0 doesn't start on a byte boundary.
2353 I.e, we need to properly handle the case where total_len is
2354 not evenly divisible by 8. So we compute ``excess'' which
2355 represents the number of bits from the end of our starting
2356 byte needed to get to bit 0. */
2357 int excess
= FLOATFORMAT_CHAR_BIT
- (total_len
% FLOATFORMAT_CHAR_BIT
);
2358 cur_byte
= (total_len
/ FLOATFORMAT_CHAR_BIT
)
2359 - ((start
+ len
+ excess
) / FLOATFORMAT_CHAR_BIT
);
2360 cur_bitshift
= ((start
+ len
+ excess
) % FLOATFORMAT_CHAR_BIT
)
2361 - FLOATFORMAT_CHAR_BIT
;
2365 cur_byte
= (start
+ len
) / FLOATFORMAT_CHAR_BIT
;
2367 ((start
+ len
) % FLOATFORMAT_CHAR_BIT
) - FLOATFORMAT_CHAR_BIT
;
2369 if (cur_bitshift
> -FLOATFORMAT_CHAR_BIT
)
2370 result
= *(data
+ cur_byte
) >> (-cur_bitshift
);
2373 cur_bitshift
+= FLOATFORMAT_CHAR_BIT
;
2374 if (order
== floatformat_little
|| order
== floatformat_littlebyte_bigword
)
2379 /* Move towards the most significant part of the field. */
2380 while (cur_bitshift
< len
)
2382 result
|= (unsigned long)*(data
+ cur_byte
) << cur_bitshift
;
2383 cur_bitshift
+= FLOATFORMAT_CHAR_BIT
;
2384 if (order
== floatformat_little
|| order
== floatformat_littlebyte_bigword
)
2389 if (len
< sizeof(result
) * FLOATFORMAT_CHAR_BIT
)
2390 /* Mask out bits which are not part of the field */
2391 result
&= ((1UL << len
) - 1);
2395 /* Convert from FMT to a DOUBLEST.
2396 FROM is the address of the extended float.
2397 Store the DOUBLEST in *TO. */
2400 floatformat_to_doublest (const struct floatformat
*fmt
, char *from
,
2403 unsigned char *ufrom
= (unsigned char *) from
;
2407 unsigned int mant_bits
, mant_off
;
2409 int special_exponent
; /* It's a NaN, denorm or zero */
2411 /* If the mantissa bits are not contiguous from one end of the
2412 mantissa to the other, we need to make a private copy of the
2413 source bytes that is in the right order since the unpacking
2414 algorithm assumes that the bits are contiguous.
2416 Swap the bytes individually rather than accessing them through
2417 "long *" since we have no guarantee that they start on a long
2418 alignment, and also sizeof(long) for the host could be different
2419 than sizeof(long) for the target. FIXME: Assumes sizeof(long)
2420 for the target is 4. */
2422 if (fmt
->byteorder
== floatformat_littlebyte_bigword
)
2424 static unsigned char *newfrom
;
2425 unsigned char *swapin
, *swapout
;
2428 longswaps
= fmt
->totalsize
/ FLOATFORMAT_CHAR_BIT
;
2431 if (newfrom
== NULL
)
2433 newfrom
= (unsigned char *) xmalloc (fmt
->totalsize
);
2438 while (longswaps
-- > 0)
2440 /* This is ugly, but efficient */
2441 *swapout
++ = swapin
[4];
2442 *swapout
++ = swapin
[5];
2443 *swapout
++ = swapin
[6];
2444 *swapout
++ = swapin
[7];
2445 *swapout
++ = swapin
[0];
2446 *swapout
++ = swapin
[1];
2447 *swapout
++ = swapin
[2];
2448 *swapout
++ = swapin
[3];
2453 exponent
= get_field (ufrom
, fmt
->byteorder
, fmt
->totalsize
,
2454 fmt
->exp_start
, fmt
->exp_len
);
2455 /* Note that if exponent indicates a NaN, we can't really do anything useful
2456 (not knowing if the host has NaN's, or how to build one). So it will
2457 end up as an infinity or something close; that is OK. */
2459 mant_bits_left
= fmt
->man_len
;
2460 mant_off
= fmt
->man_start
;
2463 special_exponent
= exponent
== 0 || exponent
== fmt
->exp_nan
;
2465 /* Don't bias NaNs. Use minimum exponent for denorms. For simplicity,
2466 we don't check for zero as the exponent doesn't matter. */
2467 if (!special_exponent
)
2468 exponent
-= fmt
->exp_bias
;
2469 else if (exponent
== 0)
2470 exponent
= 1 - fmt
->exp_bias
;
2472 /* Build the result algebraically. Might go infinite, underflow, etc;
2475 /* If this format uses a hidden bit, explicitly add it in now. Otherwise,
2476 increment the exponent by one to account for the integer bit. */
2478 if (!special_exponent
)
2480 if (fmt
->intbit
== floatformat_intbit_no
)
2481 dto
= ldexp (1.0, exponent
);
2486 while (mant_bits_left
> 0)
2488 mant_bits
= min (mant_bits_left
, 32);
2490 mant
= get_field (ufrom
, fmt
->byteorder
, fmt
->totalsize
,
2491 mant_off
, mant_bits
);
2493 dto
+= ldexp ((double) mant
, exponent
- mant_bits
);
2494 exponent
-= mant_bits
;
2495 mant_off
+= mant_bits
;
2496 mant_bits_left
-= mant_bits
;
2499 /* Negate it if negative. */
2500 if (get_field (ufrom
, fmt
->byteorder
, fmt
->totalsize
, fmt
->sign_start
, 1))
2505 static void put_field (unsigned char *, enum floatformat_byteorders
,
2507 unsigned int, unsigned int, unsigned long);
2509 /* Set a field which starts at START and is LEN bytes long. DATA and
2510 TOTAL_LEN are the thing we are extracting it from, in byteorder ORDER. */
2512 put_field (unsigned char *data
, enum floatformat_byteorders order
,
2513 unsigned int total_len
, unsigned int start
, unsigned int len
,
2514 unsigned long stuff_to_put
)
2516 unsigned int cur_byte
;
2519 /* Start at the least significant part of the field. */
2520 if (order
== floatformat_little
|| order
== floatformat_littlebyte_bigword
)
2522 int excess
= FLOATFORMAT_CHAR_BIT
- (total_len
% FLOATFORMAT_CHAR_BIT
);
2523 cur_byte
= (total_len
/ FLOATFORMAT_CHAR_BIT
)
2524 - ((start
+ len
+ excess
) / FLOATFORMAT_CHAR_BIT
);
2525 cur_bitshift
= ((start
+ len
+ excess
) % FLOATFORMAT_CHAR_BIT
)
2526 - FLOATFORMAT_CHAR_BIT
;
2530 cur_byte
= (start
+ len
) / FLOATFORMAT_CHAR_BIT
;
2532 ((start
+ len
) % FLOATFORMAT_CHAR_BIT
) - FLOATFORMAT_CHAR_BIT
;
2534 if (cur_bitshift
> -FLOATFORMAT_CHAR_BIT
)
2536 *(data
+ cur_byte
) &=
2537 ~(((1 << ((start
+ len
) % FLOATFORMAT_CHAR_BIT
)) - 1)
2538 << (-cur_bitshift
));
2539 *(data
+ cur_byte
) |=
2540 (stuff_to_put
& ((1 << FLOATFORMAT_CHAR_BIT
) - 1)) << (-cur_bitshift
);
2542 cur_bitshift
+= FLOATFORMAT_CHAR_BIT
;
2543 if (order
== floatformat_little
|| order
== floatformat_littlebyte_bigword
)
2548 /* Move towards the most significant part of the field. */
2549 while (cur_bitshift
< len
)
2551 if (len
- cur_bitshift
< FLOATFORMAT_CHAR_BIT
)
2553 /* This is the last byte. */
2554 *(data
+ cur_byte
) &=
2555 ~((1 << (len
- cur_bitshift
)) - 1);
2556 *(data
+ cur_byte
) |= (stuff_to_put
>> cur_bitshift
);
2559 *(data
+ cur_byte
) = ((stuff_to_put
>> cur_bitshift
)
2560 & ((1 << FLOATFORMAT_CHAR_BIT
) - 1));
2561 cur_bitshift
+= FLOATFORMAT_CHAR_BIT
;
2562 if (order
== floatformat_little
|| order
== floatformat_littlebyte_bigword
)
2569 #ifdef HAVE_LONG_DOUBLE
2570 /* Return the fractional part of VALUE, and put the exponent of VALUE in *EPTR.
2571 The range of the returned value is >= 0.5 and < 1.0. This is equivalent to
2572 frexp, but operates on the long double data type. */
2574 static long double ldfrexp (long double value
, int *eptr
);
2577 ldfrexp (long double value
, int *eptr
)
2582 /* Unfortunately, there are no portable functions for extracting the exponent
2583 of a long double, so we have to do it iteratively by multiplying or dividing
2584 by two until the fraction is between 0.5 and 1.0. */
2592 if (value
>= tmp
) /* Value >= 1.0 */
2593 while (value
>= tmp
)
2598 else if (value
!= 0.0l) /* Value < 1.0 and > 0.0 */
2612 #endif /* HAVE_LONG_DOUBLE */
2615 /* The converse: convert the DOUBLEST *FROM to an extended float
2616 and store where TO points. Neither FROM nor TO have any alignment
2620 floatformat_from_doublest (CONST
struct floatformat
*fmt
, DOUBLEST
*from
,
2626 unsigned int mant_bits
, mant_off
;
2628 unsigned char *uto
= (unsigned char *) to
;
2630 memcpy (&dfrom
, from
, sizeof (dfrom
));
2631 memset (uto
, 0, (fmt
->totalsize
+ FLOATFORMAT_CHAR_BIT
- 1)
2632 / FLOATFORMAT_CHAR_BIT
);
2634 return; /* Result is zero */
2635 if (dfrom
!= dfrom
) /* Result is NaN */
2638 put_field (uto
, fmt
->byteorder
, fmt
->totalsize
, fmt
->exp_start
,
2639 fmt
->exp_len
, fmt
->exp_nan
);
2640 /* Be sure it's not infinity, but NaN value is irrel */
2641 put_field (uto
, fmt
->byteorder
, fmt
->totalsize
, fmt
->man_start
,
2646 /* If negative, set the sign bit. */
2649 put_field (uto
, fmt
->byteorder
, fmt
->totalsize
, fmt
->sign_start
, 1, 1);
2653 if (dfrom
+ dfrom
== dfrom
&& dfrom
!= 0.0) /* Result is Infinity */
2655 /* Infinity exponent is same as NaN's. */
2656 put_field (uto
, fmt
->byteorder
, fmt
->totalsize
, fmt
->exp_start
,
2657 fmt
->exp_len
, fmt
->exp_nan
);
2658 /* Infinity mantissa is all zeroes. */
2659 put_field (uto
, fmt
->byteorder
, fmt
->totalsize
, fmt
->man_start
,
2664 #ifdef HAVE_LONG_DOUBLE
2665 mant
= ldfrexp (dfrom
, &exponent
);
2667 mant
= frexp (dfrom
, &exponent
);
2670 put_field (uto
, fmt
->byteorder
, fmt
->totalsize
, fmt
->exp_start
, fmt
->exp_len
,
2671 exponent
+ fmt
->exp_bias
- 1);
2673 mant_bits_left
= fmt
->man_len
;
2674 mant_off
= fmt
->man_start
;
2675 while (mant_bits_left
> 0)
2677 unsigned long mant_long
;
2678 mant_bits
= mant_bits_left
< 32 ? mant_bits_left
: 32;
2680 mant
*= 4294967296.0;
2681 mant_long
= ((unsigned long) mant
) & 0xffffffffL
;
2684 /* If the integer bit is implicit, then we need to discard it.
2685 If we are discarding a zero, we should be (but are not) creating
2686 a denormalized number which means adjusting the exponent
2688 if (mant_bits_left
== fmt
->man_len
2689 && fmt
->intbit
== floatformat_intbit_no
)
2692 mant_long
&= 0xffffffffL
;
2698 /* The bits we want are in the most significant MANT_BITS bits of
2699 mant_long. Move them to the least significant. */
2700 mant_long
>>= 32 - mant_bits
;
2703 put_field (uto
, fmt
->byteorder
, fmt
->totalsize
,
2704 mant_off
, mant_bits
, mant_long
);
2705 mant_off
+= mant_bits
;
2706 mant_bits_left
-= mant_bits
;
2708 if (fmt
->byteorder
== floatformat_littlebyte_bigword
)
2711 unsigned char *swaplow
= uto
;
2712 unsigned char *swaphigh
= uto
+ 4;
2715 for (count
= 0; count
< 4; count
++)
2718 *swaplow
++ = *swaphigh
;
2724 /* print routines to handle variable size regs, etc. */
2726 /* temporary storage using circular buffer */
2732 static char buf
[NUMCELLS
][CELLSIZE
];
2733 static int cell
= 0;
2734 if (++cell
>= NUMCELLS
)
2742 return (TARGET_ADDR_BIT
/ 8 * 2);
2746 paddr (CORE_ADDR addr
)
2748 return phex (addr
, TARGET_ADDR_BIT
/ 8);
2752 paddr_nz (CORE_ADDR addr
)
2754 return phex_nz (addr
, TARGET_ADDR_BIT
/ 8);
2758 decimal2str (char *paddr_str
, char *sign
, ULONGEST addr
)
2760 /* steal code from valprint.c:print_decimal(). Should this worry
2761 about the real size of addr as the above does? */
2762 unsigned long temp
[3];
2766 temp
[i
] = addr
% (1000 * 1000 * 1000);
2767 addr
/= (1000 * 1000 * 1000);
2770 while (addr
!= 0 && i
< (sizeof (temp
) / sizeof (temp
[0])));
2774 sprintf (paddr_str
, "%s%lu",
2778 sprintf (paddr_str
, "%s%lu%09lu",
2779 sign
, temp
[1], temp
[0]);
2782 sprintf (paddr_str
, "%s%lu%09lu%09lu",
2783 sign
, temp
[2], temp
[1], temp
[0]);
2791 paddr_u (CORE_ADDR addr
)
2793 char *paddr_str
= get_cell ();
2794 decimal2str (paddr_str
, "", addr
);
2799 paddr_d (LONGEST addr
)
2801 char *paddr_str
= get_cell ();
2803 decimal2str (paddr_str
, "-", -addr
);
2805 decimal2str (paddr_str
, "", addr
);
2809 /* eliminate warning from compiler on 32-bit systems */
2810 static int thirty_two
= 32;
2813 phex (ULONGEST l
, int sizeof_l
)
2815 char *str
= get_cell ();
2819 sprintf (str
, "%08lx%08lx",
2820 (unsigned long) (l
>> thirty_two
),
2821 (unsigned long) (l
& 0xffffffff));
2824 sprintf (str
, "%08lx", (unsigned long) l
);
2827 sprintf (str
, "%04x", (unsigned short) (l
& 0xffff));
2830 phex (l
, sizeof (l
));
2837 phex_nz (ULONGEST l
, int sizeof_l
)
2839 char *str
= get_cell ();
2844 unsigned long high
= (unsigned long) (l
>> thirty_two
);
2846 sprintf (str
, "%lx", (unsigned long) (l
& 0xffffffff));
2848 sprintf (str
, "%lx%08lx",
2849 high
, (unsigned long) (l
& 0xffffffff));
2853 sprintf (str
, "%lx", (unsigned long) l
);
2856 sprintf (str
, "%x", (unsigned short) (l
& 0xffff));
2859 phex_nz (l
, sizeof (l
));
2866 /* Convert to / from the hosts pointer to GDB's internal CORE_ADDR
2867 using the target's conversion routines. */
2869 host_pointer_to_address (void *ptr
)
2871 if (sizeof (ptr
) != TYPE_LENGTH (builtin_type_ptr
))
2872 internal_error ("core_addr_to_void_ptr: bad cast");
2873 return POINTER_TO_ADDRESS (builtin_type_ptr
, &ptr
);
2877 address_to_host_pointer (CORE_ADDR addr
)
2880 if (sizeof (ptr
) != TYPE_LENGTH (builtin_type_ptr
))
2881 internal_error ("core_addr_to_void_ptr: bad cast");
2882 ADDRESS_TO_POINTER (builtin_type_ptr
, &ptr
, addr
);