1 /* General utility routines for GDB, the GNU debugger.
2 Copyright 1986, 89, 90, 91, 92, 95, 96, 1998 Free Software Foundation, Inc.
4 This file is part of GDB.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
22 #include "gdb_string.h"
34 /* SunOS's curses.h has a '#define reg register' in it. Thank you Sun. */
45 #include "expression.h"
49 #include <readline/readline.h>
51 /* readline defines this. */
54 void (*error_begin_hook
) PARAMS ((void));
56 /* Prototypes for local functions */
58 static void vfprintf_maybe_filtered
PARAMS ((GDB_FILE
*, const char *,
61 static void fputs_maybe_filtered
PARAMS ((const char *, GDB_FILE
*, int));
63 #if defined (USE_MMALLOC) && !defined (NO_MMCHECK)
64 static void malloc_botch
PARAMS ((void));
68 fatal_dump_core
PARAMS((char *, ...));
71 prompt_for_continue
PARAMS ((void));
74 set_width_command
PARAMS ((char *, int, struct cmd_list_element
*));
77 set_width
PARAMS ((void));
79 /* If this definition isn't overridden by the header files, assume
80 that isatty and fileno exist on this system. */
82 #define ISATTY(FP) (isatty (fileno (FP)))
85 #ifndef GDB_FILE_ISATTY
86 #define GDB_FILE_ISATTY(GDB_FILE_PTR) (gdb_file_isatty(GDB_FILE_PTR))
89 /* Chain of cleanup actions established with make_cleanup,
90 to be executed if an error happens. */
92 static struct cleanup
*cleanup_chain
; /* cleaned up after a failed command */
93 static struct cleanup
*final_cleanup_chain
; /* cleaned up when gdb exits */
94 static struct cleanup
*run_cleanup_chain
; /* cleaned up on each 'run' */
96 /* Nonzero if we have job control. */
100 /* Nonzero means a quit has been requested. */
104 /* Nonzero means quit immediately if Control-C is typed now, rather
105 than waiting until QUIT is executed. Be careful in setting this;
106 code which executes with immediate_quit set has to be very careful
107 about being able to deal with being interrupted at any time. It is
108 almost always better to use QUIT; the only exception I can think of
109 is being able to quit out of a system call (using EINTR loses if
110 the SIGINT happens between the previous QUIT and the system call).
111 To immediately quit in the case in which a SIGINT happens between
112 the previous QUIT and setting immediate_quit (desirable anytime we
113 expect to block), call QUIT after setting immediate_quit. */
117 /* Nonzero means that encoded C++ names should be printed out in their
118 C++ form rather than raw. */
122 /* Nonzero means that encoded C++ names should be printed out in their
123 C++ form even in assembler language displays. If this is set, but
124 DEMANGLE is zero, names are printed raw, i.e. DEMANGLE controls. */
126 int asm_demangle
= 0;
128 /* Nonzero means that strings with character values >0x7F should be printed
129 as octal escapes. Zero means just print the value (e.g. it's an
130 international character, and the terminal or window can cope.) */
132 int sevenbit_strings
= 0;
134 /* String to be printed before error messages, if any. */
136 char *error_pre_print
;
138 /* String to be printed before quit messages, if any. */
140 char *quit_pre_print
;
142 /* String to be printed before warning messages, if any. */
144 char *warning_pre_print
= "\nwarning: ";
146 int pagination_enabled
= 1;
149 /* Add a new cleanup to the cleanup_chain,
150 and return the previous chain pointer
151 to be passed later to do_cleanups or discard_cleanups.
152 Args are FUNCTION to clean up with, and ARG to pass to it. */
155 make_cleanup (function
, arg
)
156 void (*function
) PARAMS ((PTR
));
159 return make_my_cleanup (&cleanup_chain
, function
, arg
);
163 make_final_cleanup (function
, arg
)
164 void (*function
) PARAMS ((PTR
));
167 return make_my_cleanup (&final_cleanup_chain
, function
, arg
);
171 make_run_cleanup (function
, arg
)
172 void (*function
) PARAMS ((PTR
));
175 return make_my_cleanup (&run_cleanup_chain
, function
, arg
);
182 freeargv ((char**) arg
);
186 make_cleanup_freeargv (arg
)
189 return make_my_cleanup (&cleanup_chain
, do_freeargv
, arg
);
193 make_my_cleanup (pmy_chain
, function
, arg
)
194 struct cleanup
**pmy_chain
;
195 void (*function
) PARAMS ((PTR
));
198 register struct cleanup
*new
199 = (struct cleanup
*) xmalloc (sizeof (struct cleanup
));
200 register struct cleanup
*old_chain
= *pmy_chain
;
202 new->next
= *pmy_chain
;
203 new->function
= function
;
210 /* Discard cleanups and do the actions they describe
211 until we get back to the point OLD_CHAIN in the cleanup_chain. */
214 do_cleanups (old_chain
)
215 register struct cleanup
*old_chain
;
217 do_my_cleanups (&cleanup_chain
, old_chain
);
221 do_final_cleanups (old_chain
)
222 register struct cleanup
*old_chain
;
224 do_my_cleanups (&final_cleanup_chain
, old_chain
);
228 do_run_cleanups (old_chain
)
229 register struct cleanup
*old_chain
;
231 do_my_cleanups (&run_cleanup_chain
, old_chain
);
235 do_my_cleanups (pmy_chain
, old_chain
)
236 register struct cleanup
**pmy_chain
;
237 register struct cleanup
*old_chain
;
239 register struct cleanup
*ptr
;
240 while ((ptr
= *pmy_chain
) != old_chain
)
242 *pmy_chain
= ptr
->next
; /* Do this first incase recursion */
243 (*ptr
->function
) (ptr
->arg
);
248 /* Discard cleanups, not doing the actions they describe,
249 until we get back to the point OLD_CHAIN in the cleanup_chain. */
252 discard_cleanups (old_chain
)
253 register struct cleanup
*old_chain
;
255 discard_my_cleanups (&cleanup_chain
, old_chain
);
259 discard_final_cleanups (old_chain
)
260 register struct cleanup
*old_chain
;
262 discard_my_cleanups (&final_cleanup_chain
, old_chain
);
266 discard_my_cleanups (pmy_chain
, old_chain
)
267 register struct cleanup
**pmy_chain
;
268 register struct cleanup
*old_chain
;
270 register struct cleanup
*ptr
;
271 while ((ptr
= *pmy_chain
) != old_chain
)
273 *pmy_chain
= ptr
->next
;
278 /* Set the cleanup_chain to 0, and return the old cleanup chain. */
282 return save_my_cleanups (&cleanup_chain
);
286 save_final_cleanups ()
288 return save_my_cleanups (&final_cleanup_chain
);
292 save_my_cleanups (pmy_chain
)
293 struct cleanup
**pmy_chain
;
295 struct cleanup
*old_chain
= *pmy_chain
;
301 /* Restore the cleanup chain from a previously saved chain. */
303 restore_cleanups (chain
)
304 struct cleanup
*chain
;
306 restore_my_cleanups (&cleanup_chain
, chain
);
310 restore_final_cleanups (chain
)
311 struct cleanup
*chain
;
313 restore_my_cleanups (&final_cleanup_chain
, chain
);
317 restore_my_cleanups (pmy_chain
, chain
)
318 struct cleanup
**pmy_chain
;
319 struct cleanup
*chain
;
324 /* This function is useful for cleanups.
328 old_chain = make_cleanup (free_current_contents, &foo);
330 to arrange to free the object thus allocated. */
333 free_current_contents (location
)
339 /* Provide a known function that does nothing, to use as a base for
340 for a possibly long chain of cleanups. This is useful where we
341 use the cleanup chain for handling normal cleanups as well as dealing
342 with cleanups that need to be done as a result of a call to error().
343 In such cases, we may not be certain where the first cleanup is, unless
344 we have a do-nothing one to always use as the base. */
354 /* Print a warning message. Way to use this is to call warning_begin,
355 output the warning message (use unfiltered output to gdb_stderr),
356 ending in a newline. There is not currently a warning_end that you
357 call afterwards, but such a thing might be added if it is useful
358 for a GUI to separate warning messages from other output.
360 FIXME: Why do warnings use unfiltered output and errors filtered?
361 Is this anything other than a historical accident? */
366 target_terminal_ours ();
367 wrap_here(""); /* Force out any buffered output */
368 gdb_flush (gdb_stdout
);
369 if (warning_pre_print
)
370 fprintf_unfiltered (gdb_stderr
, warning_pre_print
);
373 /* Print a warning message.
374 The first argument STRING is the warning message, used as a fprintf string,
375 and the remaining args are passed as arguments to it.
376 The primary difference between warnings and errors is that a warning
377 does not force the return to command level. */
381 #ifdef ANSI_PROTOTYPES
382 warning (const char *string
, ...)
389 #ifdef ANSI_PROTOTYPES
390 va_start (args
, string
);
395 string
= va_arg (args
, char *);
398 (*warning_hook
) (string
, args
);
402 vfprintf_unfiltered (gdb_stderr
, string
, args
);
403 fprintf_unfiltered (gdb_stderr
, "\n");
408 /* Start the printing of an error message. Way to use this is to call
409 this, output the error message (use filtered output to gdb_stderr
410 (FIXME: Some callers, like memory_error, use gdb_stdout)), ending
411 in a newline, and then call return_to_top_level (RETURN_ERROR).
412 error() provides a convenient way to do this for the special case
413 that the error message can be formatted with a single printf call,
414 but this is more general. */
418 if (error_begin_hook
)
421 target_terminal_ours ();
422 wrap_here (""); /* Force out any buffered output */
423 gdb_flush (gdb_stdout
);
425 annotate_error_begin ();
428 fprintf_filtered (gdb_stderr
, error_pre_print
);
431 /* Print an error message and return to command level.
432 The first argument STRING is the error message, used as a fprintf string,
433 and the remaining args are passed as arguments to it. */
437 #ifdef ANSI_PROTOTYPES
438 error (const char *string
, ...)
445 #ifdef ANSI_PROTOTYPES
446 va_start (args
, string
);
455 #ifdef ANSI_PROTOTYPES
456 vfprintf_filtered (gdb_stderr
, string
, args
);
461 string1
= va_arg (args
, char *);
462 vfprintf_filtered (gdb_stderr
, string1
, args
);
465 fprintf_filtered (gdb_stderr
, "\n");
467 return_to_top_level (RETURN_ERROR
);
472 /* Print an error message and exit reporting failure.
473 This is for a error that we cannot continue from.
474 The arguments are printed a la printf.
476 This function cannot be declared volatile (NORETURN) in an
477 ANSI environment because exit() is not declared volatile. */
481 #ifdef ANSI_PROTOTYPES
482 fatal (char *string
, ...)
489 #ifdef ANSI_PROTOTYPES
490 va_start (args
, string
);
494 string
= va_arg (args
, char *);
496 fprintf_unfiltered (gdb_stderr
, "\ngdb: ");
497 vfprintf_unfiltered (gdb_stderr
, string
, args
);
498 fprintf_unfiltered (gdb_stderr
, "\n");
503 /* Print an error message and exit, dumping core.
504 The arguments are printed a la printf (). */
508 #ifdef ANSI_PROTOTYPES
509 fatal_dump_core (char *string
, ...)
511 fatal_dump_core (va_alist
)
516 #ifdef ANSI_PROTOTYPES
517 va_start (args
, string
);
522 string
= va_arg (args
, char *);
524 /* "internal error" is always correct, since GDB should never dump
525 core, no matter what the input. */
526 fprintf_unfiltered (gdb_stderr
, "\ngdb internal error: ");
527 vfprintf_unfiltered (gdb_stderr
, string
, args
);
528 fprintf_unfiltered (gdb_stderr
, "\n");
531 signal (SIGQUIT
, SIG_DFL
);
532 kill (getpid (), SIGQUIT
);
533 /* We should never get here, but just in case... */
537 /* The strerror() function can return NULL for errno values that are
538 out of range. Provide a "safe" version that always returns a
542 safe_strerror (errnum
)
548 if ((msg
= strerror (errnum
)) == NULL
)
550 sprintf (buf
, "(undocumented errno %d)", errnum
);
556 /* The strsignal() function can return NULL for signal values that are
557 out of range. Provide a "safe" version that always returns a
561 safe_strsignal (signo
)
567 if ((msg
= strsignal (signo
)) == NULL
)
569 sprintf (buf
, "(undocumented signal %d)", signo
);
576 /* Print the system error message for errno, and also mention STRING
577 as the file name for which the error was encountered.
578 Then return to command level. */
581 perror_with_name (string
)
587 err
= safe_strerror (errno
);
588 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
589 strcpy (combined
, string
);
590 strcat (combined
, ": ");
591 strcat (combined
, err
);
593 /* I understand setting these is a matter of taste. Still, some people
594 may clear errno but not know about bfd_error. Doing this here is not
596 bfd_set_error (bfd_error_no_error
);
599 error ("%s.", combined
);
602 /* Print the system error message for ERRCODE, and also mention STRING
603 as the file name for which the error was encountered. */
606 print_sys_errmsg (string
, errcode
)
613 err
= safe_strerror (errcode
);
614 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
615 strcpy (combined
, string
);
616 strcat (combined
, ": ");
617 strcat (combined
, err
);
619 /* We want anything which was printed on stdout to come out first, before
621 gdb_flush (gdb_stdout
);
622 fprintf_unfiltered (gdb_stderr
, "%s.\n", combined
);
625 /* Control C eventually causes this to be called, at a convenient time. */
630 serial_t gdb_stdout_serial
= serial_fdopen (1);
632 target_terminal_ours ();
634 /* We want all output to appear now, before we print "Quit". We
635 have 3 levels of buffering we have to flush (it's possible that
636 some of these should be changed to flush the lower-level ones
639 /* 1. The _filtered buffer. */
640 wrap_here ((char *)0);
642 /* 2. The stdio buffer. */
643 gdb_flush (gdb_stdout
);
644 gdb_flush (gdb_stderr
);
646 /* 3. The system-level buffer. */
647 SERIAL_DRAIN_OUTPUT (gdb_stdout_serial
);
648 SERIAL_UN_FDOPEN (gdb_stdout_serial
);
650 annotate_error_begin ();
652 /* Don't use *_filtered; we don't want to prompt the user to continue. */
654 fprintf_unfiltered (gdb_stderr
, quit_pre_print
);
657 /* If there is no terminal switching for this target, then we can't
658 possibly get screwed by the lack of job control. */
659 || current_target
.to_terminal_ours
== NULL
)
660 fprintf_unfiltered (gdb_stderr
, "Quit\n");
662 fprintf_unfiltered (gdb_stderr
,
663 "Quit (expect signal SIGINT when the program is resumed)\n");
664 return_to_top_level (RETURN_QUIT
);
668 #if defined(__GO32__)
670 /* In the absence of signals, poll keyboard for a quit.
671 Called from #define QUIT pollquit() in xm-go32.h. */
686 /* We just ignore it */
687 /* FIXME!! Don't think this actually works! */
688 fprintf_unfiltered (gdb_stderr
, "CTRL-A to quit, CTRL-B to quit harder\n");
693 #elif defined(_MSC_VER) /* should test for wingdb instead? */
696 * Windows translates all keyboard and mouse events
697 * into a message which is appended to the message
698 * queue for the process.
703 int k
= win32pollquit();
710 #else /* !defined(__GO32__) && !defined(_MSC_VER) */
714 /* Done by signals */
717 #endif /* !defined(__GO32__) && !defined(_MSC_VER) */
719 /* Control C comes here */
726 /* Restore the signal handler. Harmless with BSD-style signals, needed
727 for System V-style signals. So just always do it, rather than worrying
728 about USG defines and stuff like that. */
729 signal (signo
, request_quit
);
740 /* Memory management stuff (malloc friends). */
742 /* Make a substitute size_t for non-ANSI compilers. */
744 #ifndef HAVE_STDDEF_H
746 #define size_t unsigned int
750 #if !defined (USE_MMALLOC)
757 return malloc (size
);
761 mrealloc (md
, ptr
, size
)
766 if (ptr
== 0) /* Guard against old realloc's */
767 return malloc (size
);
769 return realloc (ptr
, size
);
780 #endif /* USE_MMALLOC */
782 #if !defined (USE_MMALLOC) || defined (NO_MMCHECK)
790 #else /* Have mmalloc and want corruption checking */
795 fatal_dump_core ("Memory corruption");
798 /* Attempt to install hooks in mmalloc/mrealloc/mfree for the heap specified
799 by MD, to detect memory corruption. Note that MD may be NULL to specify
800 the default heap that grows via sbrk.
802 Note that for freshly created regions, we must call mmcheckf prior to any
803 mallocs in the region. Otherwise, any region which was allocated prior to
804 installing the checking hooks, which is later reallocated or freed, will
805 fail the checks! The mmcheck function only allows initial hooks to be
806 installed before the first mmalloc. However, anytime after we have called
807 mmcheck the first time to install the checking hooks, we can call it again
808 to update the function pointer to the memory corruption handler.
810 Returns zero on failure, non-zero on success. */
812 #ifndef MMCHECK_FORCE
813 #define MMCHECK_FORCE 0
820 if (!mmcheckf (md
, malloc_botch
, MMCHECK_FORCE
))
822 /* Don't use warning(), which relies on current_target being set
823 to something other than dummy_target, until after
824 initialize_all_files(). */
827 (gdb_stderr
, "warning: failed to install memory consistency checks; ");
829 (gdb_stderr
, "configuration should define NO_MMCHECK or MMCHECK_FORCE\n");
835 #endif /* Have mmalloc and want corruption checking */
837 /* Called when a memory allocation fails, with the number of bytes of
838 memory requested in SIZE. */
846 fatal ("virtual memory exhausted: can't allocate %ld bytes.", size
);
850 fatal ("virtual memory exhausted.");
854 /* Like mmalloc but get error if no storage available, and protect against
855 the caller wanting to allocate zero bytes. Whether to return NULL for
856 a zero byte request, or translate the request into a request for one
857 byte of zero'd storage, is a religious issue. */
870 else if ((val
= mmalloc (md
, size
)) == NULL
)
877 /* Like mrealloc but get error if no storage available. */
880 xmrealloc (md
, ptr
, size
)
889 val
= mrealloc (md
, ptr
, size
);
893 val
= mmalloc (md
, size
);
902 /* Like malloc but get error if no storage available, and protect against
903 the caller wanting to allocate zero bytes. */
909 return (xmmalloc ((PTR
) NULL
, size
));
912 /* Like mrealloc but get error if no storage available. */
919 return (xmrealloc ((PTR
) NULL
, ptr
, size
));
923 /* My replacement for the read system call.
924 Used like `read' but keeps going if `read' returns too soon. */
927 myread (desc
, addr
, len
)
937 val
= read (desc
, addr
, len
);
948 /* Make a copy of the string at PTR with SIZE characters
949 (and add a null character at the end in the copy).
950 Uses malloc to get the space. Returns the address of the copy. */
953 savestring (ptr
, size
)
957 register char *p
= (char *) xmalloc (size
+ 1);
958 memcpy (p
, ptr
, size
);
964 msavestring (md
, ptr
, size
)
969 register char *p
= (char *) xmmalloc (md
, size
+ 1);
970 memcpy (p
, ptr
, size
);
975 /* The "const" is so it compiles under DGUX (which prototypes strsave
976 in <string.h>. FIXME: This should be named "xstrsave", shouldn't it?
977 Doesn't real strsave return NULL if out of memory? */
982 return savestring (ptr
, strlen (ptr
));
990 return (msavestring (md
, ptr
, strlen (ptr
)));
994 print_spaces (n
, file
)
996 register GDB_FILE
*file
;
998 fputs_unfiltered (n_spaces (n
), file
);
1001 /* Print a host address. */
1004 gdb_print_address (addr
, stream
)
1009 /* We could use the %p conversion specifier to fprintf if we had any
1010 way of knowing whether this host supports it. But the following
1011 should work on the Alpha and on 32 bit machines. */
1013 fprintf_filtered (stream
, "0x%lx", (unsigned long)addr
);
1016 /* Ask user a y-or-n question and return 1 iff answer is yes.
1017 Takes three args which are given to printf to print the question.
1018 The first, a control string, should end in "? ".
1019 It should not say how to answer, because we do that. */
1023 #ifdef ANSI_PROTOTYPES
1024 query (char *ctlstr
, ...)
1031 register int answer
;
1035 #ifdef ANSI_PROTOTYPES
1036 va_start (args
, ctlstr
);
1040 ctlstr
= va_arg (args
, char *);
1045 return query_hook (ctlstr
, args
);
1048 /* Automatically answer "yes" if input is not from a terminal. */
1049 if (!input_from_terminal_p ())
1052 /* FIXME Automatically answer "yes" if called from MacGDB. */
1059 wrap_here (""); /* Flush any buffered output */
1060 gdb_flush (gdb_stdout
);
1062 if (annotation_level
> 1)
1063 printf_filtered ("\n\032\032pre-query\n");
1065 vfprintf_filtered (gdb_stdout
, ctlstr
, args
);
1066 printf_filtered ("(y or n) ");
1068 if (annotation_level
> 1)
1069 printf_filtered ("\n\032\032query\n");
1072 /* If not in MacGDB, move to a new line so the entered line doesn't
1073 have a prompt on the front of it. */
1075 fputs_unfiltered ("\n", gdb_stdout
);
1079 gdb_flush (gdb_stdout
);
1082 if (!tui_version
|| cmdWin
== tuiWinWithFocus())
1084 answer
= fgetc (stdin
);
1088 answer
= (unsigned char)tuiBufferGetc();
1091 clearerr (stdin
); /* in case of C-d */
1092 if (answer
== EOF
) /* C-d */
1097 /* Eat rest of input line, to EOF or newline */
1098 if ((answer
!= '\n') || (tui_version
&& answer
!= '\r'))
1102 if (!tui_version
|| cmdWin
== tuiWinWithFocus())
1104 ans2
= fgetc (stdin
);
1108 ans2
= (unsigned char)tuiBufferGetc();
1112 while (ans2
!= EOF
&& ans2
!= '\n' && ans2
!= '\r');
1113 TUIDO(((TuiOpaqueFuncPtr
)tui_vStartNewLines
, 1));
1127 printf_filtered ("Please answer y or n.\n");
1130 if (annotation_level
> 1)
1131 printf_filtered ("\n\032\032post-query\n");
1136 /* Parse a C escape sequence. STRING_PTR points to a variable
1137 containing a pointer to the string to parse. That pointer
1138 should point to the character after the \. That pointer
1139 is updated past the characters we use. The value of the
1140 escape sequence is returned.
1142 A negative value means the sequence \ newline was seen,
1143 which is supposed to be equivalent to nothing at all.
1145 If \ is followed by a null character, we return a negative
1146 value and leave the string pointer pointing at the null character.
1148 If \ is followed by 000, we return 0 and leave the string pointer
1149 after the zeros. A value of 0 does not mean end of string. */
1152 parse_escape (string_ptr
)
1155 register int c
= *(*string_ptr
)++;
1159 return 007; /* Bell (alert) char */
1162 case 'e': /* Escape character */
1180 c
= *(*string_ptr
)++;
1182 c
= parse_escape (string_ptr
);
1185 return (c
& 0200) | (c
& 037);
1196 register int i
= c
- '0';
1197 register int count
= 0;
1200 if ((c
= *(*string_ptr
)++) >= '0' && c
<= '7')
1218 /* Print the character C on STREAM as part of the contents of a literal
1219 string whose delimiter is QUOTER. Note that this routine should only
1220 be call for printing things which are independent of the language
1221 of the program being debugged. */
1224 gdb_printchar (c
, stream
, quoter
)
1230 c
&= 0xFF; /* Avoid sign bit follies */
1232 if ( c
< 0x20 || /* Low control chars */
1233 (c
>= 0x7F && c
< 0xA0) || /* DEL, High controls */
1234 (sevenbit_strings
&& c
>= 0x80)) { /* high order bit set */
1238 fputs_filtered ("\\n", stream
);
1241 fputs_filtered ("\\b", stream
);
1244 fputs_filtered ("\\t", stream
);
1247 fputs_filtered ("\\f", stream
);
1250 fputs_filtered ("\\r", stream
);
1253 fputs_filtered ("\\e", stream
);
1256 fputs_filtered ("\\a", stream
);
1259 fprintf_filtered (stream
, "\\%.3o", (unsigned int) c
);
1263 if (c
== '\\' || c
== quoter
)
1264 fputs_filtered ("\\", stream
);
1265 fprintf_filtered (stream
, "%c", c
);
1270 /* Number of lines per page or UINT_MAX if paging is disabled. */
1271 static unsigned int lines_per_page
;
1272 /* Number of chars per line or UNIT_MAX is line folding is disabled. */
1273 static unsigned int chars_per_line
;
1274 /* Current count of lines printed on this page, chars on this line. */
1275 static unsigned int lines_printed
, chars_printed
;
1277 /* Buffer and start column of buffered text, for doing smarter word-
1278 wrapping. When someone calls wrap_here(), we start buffering output
1279 that comes through fputs_filtered(). If we see a newline, we just
1280 spit it out and forget about the wrap_here(). If we see another
1281 wrap_here(), we spit it out and remember the newer one. If we see
1282 the end of the line, we spit out a newline, the indent, and then
1283 the buffered output. */
1285 /* Malloc'd buffer with chars_per_line+2 bytes. Contains characters which
1286 are waiting to be output (they have already been counted in chars_printed).
1287 When wrap_buffer[0] is null, the buffer is empty. */
1288 static char *wrap_buffer
;
1290 /* Pointer in wrap_buffer to the next character to fill. */
1291 static char *wrap_pointer
;
1293 /* String to indent by if the wrap occurs. Must not be NULL if wrap_column
1295 static char *wrap_indent
;
1297 /* Column number on the screen where wrap_buffer begins, or 0 if wrapping
1298 is not in effect. */
1299 static int wrap_column
;
1302 /* Inialize the lines and chars per page */
1307 if (tui_version
&& m_winPtrNotNull(cmdWin
))
1309 lines_per_page
= cmdWin
->generic
.height
;
1310 chars_per_line
= cmdWin
->generic
.width
;
1315 /* These defaults will be used if we are unable to get the correct
1316 values from termcap. */
1317 #if defined(__GO32__)
1318 lines_per_page
= ScreenRows();
1319 chars_per_line
= ScreenCols();
1321 lines_per_page
= 24;
1322 chars_per_line
= 80;
1324 #if !defined (MPW) && !defined (_WIN32)
1325 /* No termcap under MPW, although might be cool to do something
1326 by looking at worksheet or console window sizes. */
1327 /* Initialize the screen height and width from termcap. */
1329 char *termtype
= getenv ("TERM");
1331 /* Positive means success, nonpositive means failure. */
1334 /* 2048 is large enough for all known terminals, according to the
1335 GNU termcap manual. */
1336 char term_buffer
[2048];
1340 status
= tgetent (term_buffer
, termtype
);
1344 int running_in_emacs
= getenv ("EMACS") != NULL
;
1346 val
= tgetnum ("li");
1347 if (val
>= 0 && !running_in_emacs
)
1348 lines_per_page
= val
;
1350 /* The number of lines per page is not mentioned
1351 in the terminal description. This probably means
1352 that paging is not useful (e.g. emacs shell window),
1353 so disable paging. */
1354 lines_per_page
= UINT_MAX
;
1356 val
= tgetnum ("co");
1358 chars_per_line
= val
;
1364 #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER)
1366 /* If there is a better way to determine the window size, use it. */
1367 SIGWINCH_HANDLER (SIGWINCH
);
1370 /* If the output is not a terminal, don't paginate it. */
1371 if (!GDB_FILE_ISATTY (gdb_stdout
))
1372 lines_per_page
= UINT_MAX
;
1373 } /* the command_line_version */
1380 if (chars_per_line
== 0)
1385 wrap_buffer
= (char *) xmalloc (chars_per_line
+ 2);
1386 wrap_buffer
[0] = '\0';
1389 wrap_buffer
= (char *) xrealloc (wrap_buffer
, chars_per_line
+ 2);
1390 wrap_pointer
= wrap_buffer
; /* Start it at the beginning */
1395 set_width_command (args
, from_tty
, c
)
1398 struct cmd_list_element
*c
;
1403 /* Wait, so the user can read what's on the screen. Prompt the user
1404 to continue by pressing RETURN. */
1407 prompt_for_continue ()
1410 char cont_prompt
[120];
1412 if (annotation_level
> 1)
1413 printf_unfiltered ("\n\032\032pre-prompt-for-continue\n");
1415 strcpy (cont_prompt
,
1416 "---Type <return> to continue, or q <return> to quit---");
1417 if (annotation_level
> 1)
1418 strcat (cont_prompt
, "\n\032\032prompt-for-continue\n");
1420 /* We must do this *before* we call gdb_readline, else it will eventually
1421 call us -- thinking that we're trying to print beyond the end of the
1423 reinitialize_more_filter ();
1426 /* On a real operating system, the user can quit with SIGINT.
1429 'q' is provided on all systems so users don't have to change habits
1430 from system to system, and because telling them what to do in
1431 the prompt is more user-friendly than expecting them to think of
1433 /* Call readline, not gdb_readline, because GO32 readline handles control-C
1434 whereas control-C to gdb_readline will cause the user to get dumped
1436 ignore
= readline (cont_prompt
);
1438 if (annotation_level
> 1)
1439 printf_unfiltered ("\n\032\032post-prompt-for-continue\n");
1444 while (*p
== ' ' || *p
== '\t')
1447 request_quit (SIGINT
);
1452 /* Now we have to do this again, so that GDB will know that it doesn't
1453 need to save the ---Type <return>--- line at the top of the screen. */
1454 reinitialize_more_filter ();
1456 dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */
1459 /* Reinitialize filter; ie. tell it to reset to original values. */
1462 reinitialize_more_filter ()
1468 /* Indicate that if the next sequence of characters overflows the line,
1469 a newline should be inserted here rather than when it hits the end.
1470 If INDENT is non-null, it is a string to be printed to indent the
1471 wrapped part on the next line. INDENT must remain accessible until
1472 the next call to wrap_here() or until a newline is printed through
1475 If the line is already overfull, we immediately print a newline and
1476 the indentation, and disable further wrapping.
1478 If we don't know the width of lines, but we know the page height,
1479 we must not wrap words, but should still keep track of newlines
1480 that were explicitly printed.
1482 INDENT should not contain tabs, as that will mess up the char count
1483 on the next line. FIXME.
1485 This routine is guaranteed to force out any output which has been
1486 squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be
1487 used to force out output from the wrap_buffer. */
1493 /* This should have been allocated, but be paranoid anyway. */
1499 *wrap_pointer
= '\0';
1500 fputs_unfiltered (wrap_buffer
, gdb_stdout
);
1502 wrap_pointer
= wrap_buffer
;
1503 wrap_buffer
[0] = '\0';
1504 if (chars_per_line
== UINT_MAX
) /* No line overflow checking */
1508 else if (chars_printed
>= chars_per_line
)
1510 puts_filtered ("\n");
1512 puts_filtered (indent
);
1517 wrap_column
= chars_printed
;
1521 wrap_indent
= indent
;
1525 /* Ensure that whatever gets printed next, using the filtered output
1526 commands, starts at the beginning of the line. I.E. if there is
1527 any pending output for the current line, flush it and start a new
1528 line. Otherwise do nothing. */
1533 if (chars_printed
> 0)
1535 puts_filtered ("\n");
1540 gdb_file_isatty (stream
)
1544 if (stream
->ts_streamtype
== afile
)
1545 return (isatty(fileno(stream
->ts_filestream
)));
1550 gdb_file_init_astring (n
)
1553 GDB_FILE
*tmpstream
;
1555 tmpstream
= xmalloc (sizeof(GDB_FILE
));
1556 tmpstream
->ts_streamtype
= astring
;
1557 tmpstream
->ts_filestream
= NULL
;
1560 tmpstream
->ts_strbuf
= xmalloc ((n
+ 1)*sizeof(char));
1561 tmpstream
->ts_strbuf
[0] = '\0';
1564 tmpstream
->ts_strbuf
= NULL
;
1565 tmpstream
->ts_buflen
= n
;
1571 gdb_file_deallocate (streamptr
)
1572 GDB_FILE
**streamptr
;
1574 GDB_FILE
*tmpstream
;
1576 tmpstream
= *streamptr
;
1577 if ((tmpstream
->ts_streamtype
== astring
) &&
1578 (tmpstream
->ts_strbuf
!= NULL
))
1580 free (tmpstream
->ts_strbuf
);
1588 gdb_file_get_strbuf (stream
)
1591 return (stream
->ts_strbuf
);
1594 /* adjust the length of the buffer by the amount necessary
1595 to accomodate appending a string of length N to the buffer contents */
1597 gdb_file_adjust_strbuf (n
, stream
)
1603 if (stream
->ts_streamtype
!= astring
)
1606 if (stream
->ts_strbuf
)
1608 /* There is already a buffer allocated */
1609 non_null_chars
= strlen(stream
->ts_strbuf
);
1611 if (n
> (stream
->ts_buflen
- non_null_chars
- 1))
1613 stream
->ts_buflen
= n
+ non_null_chars
+ 1;
1614 stream
->ts_strbuf
= xrealloc (stream
->ts_strbuf
, stream
->ts_buflen
);
1618 /* No buffer yet, so allocate one of the desired size */
1619 stream
->ts_strbuf
= xmalloc ((n
+ 1) * sizeof (char));
1623 gdb_fopen (name
, mode
)
1630 gdb_file_size
= sizeof(GDB_FILE
);
1631 tmp
= (GDB_FILE
*) xmalloc (gdb_file_size
);
1632 tmp
->ts_streamtype
= afile
;
1633 tmp
->ts_filestream
= fopen (name
, mode
);
1634 tmp
->ts_strbuf
= NULL
;
1645 && (stream
== gdb_stdout
1646 || stream
== gdb_stderr
))
1648 flush_hook (stream
);
1652 fflush (stream
->ts_filestream
);
1656 gdb_fclose(streamptr
)
1657 GDB_FILE
**streamptr
;
1659 GDB_FILE
*tmpstream
;
1661 tmpstream
= *streamptr
;
1662 fclose (tmpstream
->ts_filestream
);
1663 gdb_file_deallocate (streamptr
);
1666 /* Like fputs but if FILTER is true, pause after every screenful.
1668 Regardless of FILTER can wrap at points other than the final
1669 character of a line.
1671 Unlike fputs, fputs_maybe_filtered does not return a value.
1672 It is OK for LINEBUFFER to be NULL, in which case just don't print
1675 Note that a longjmp to top level may occur in this routine (only if
1676 FILTER is true) (since prompt_for_continue may do so) so this
1677 routine should not be called when cleanups are not in place. */
1680 fputs_maybe_filtered (linebuffer
, stream
, filter
)
1681 const char *linebuffer
;
1685 const char *lineptr
;
1687 if (linebuffer
== 0)
1690 /* Don't do any filtering if it is disabled. */
1691 if ((stream
!= gdb_stdout
) || !pagination_enabled
1692 || (lines_per_page
== UINT_MAX
&& chars_per_line
== UINT_MAX
))
1694 fputs_unfiltered (linebuffer
, stream
);
1698 /* Go through and output each character. Show line extension
1699 when this is necessary; prompt user for new page when this is
1702 lineptr
= linebuffer
;
1705 /* Possible new page. */
1707 (lines_printed
>= lines_per_page
- 1))
1708 prompt_for_continue ();
1710 while (*lineptr
&& *lineptr
!= '\n')
1712 /* Print a single line. */
1713 if (*lineptr
== '\t')
1716 *wrap_pointer
++ = '\t';
1718 fputc_unfiltered ('\t', stream
);
1719 /* Shifting right by 3 produces the number of tab stops
1720 we have already passed, and then adding one and
1721 shifting left 3 advances to the next tab stop. */
1722 chars_printed
= ((chars_printed
>> 3) + 1) << 3;
1728 *wrap_pointer
++ = *lineptr
;
1730 fputc_unfiltered (*lineptr
, stream
);
1735 if (chars_printed
>= chars_per_line
)
1737 unsigned int save_chars
= chars_printed
;
1741 /* If we aren't actually wrapping, don't output newline --
1742 if chars_per_line is right, we probably just overflowed
1743 anyway; if it's wrong, let us keep going. */
1745 fputc_unfiltered ('\n', stream
);
1747 /* Possible new page. */
1748 if (lines_printed
>= lines_per_page
- 1)
1749 prompt_for_continue ();
1751 /* Now output indentation and wrapped string */
1754 fputs_unfiltered (wrap_indent
, stream
);
1755 *wrap_pointer
= '\0'; /* Null-terminate saved stuff */
1756 fputs_unfiltered (wrap_buffer
, stream
); /* and eject it */
1757 /* FIXME, this strlen is what prevents wrap_indent from
1758 containing tabs. However, if we recurse to print it
1759 and count its chars, we risk trouble if wrap_indent is
1760 longer than (the user settable) chars_per_line.
1761 Note also that this can set chars_printed > chars_per_line
1762 if we are printing a long string. */
1763 chars_printed
= strlen (wrap_indent
)
1764 + (save_chars
- wrap_column
);
1765 wrap_pointer
= wrap_buffer
; /* Reset buffer */
1766 wrap_buffer
[0] = '\0';
1767 wrap_column
= 0; /* And disable fancy wrap */
1772 if (*lineptr
== '\n')
1775 wrap_here ((char *)0); /* Spit out chars, cancel further wraps */
1777 fputc_unfiltered ('\n', stream
);
1784 fputs_filtered (linebuffer
, stream
)
1785 const char *linebuffer
;
1788 fputs_maybe_filtered (linebuffer
, stream
, 1);
1792 putchar_unfiltered (c
)
1799 fputs_unfiltered (buf
, gdb_stdout
);
1804 fputc_unfiltered (c
, stream
)
1812 fputs_unfiltered (buf
, stream
);
1817 fputc_filtered (c
, stream
)
1825 fputs_filtered (buf
, stream
);
1829 /* puts_debug is like fputs_unfiltered, except it prints special
1830 characters in printable fashion. */
1833 puts_debug (prefix
, string
, suffix
)
1840 /* Print prefix and suffix after each line. */
1841 static int new_line
= 1;
1842 static int return_p
= 0;
1843 static char *prev_prefix
= "";
1844 static char *prev_suffix
= "";
1846 if (*string
== '\n')
1849 /* If the prefix is changing, print the previous suffix, a new line,
1850 and the new prefix. */
1851 if ((return_p
|| (strcmp(prev_prefix
, prefix
) != 0)) && !new_line
)
1853 fputs_unfiltered (prev_suffix
, gdb_stderr
);
1854 fputs_unfiltered ("\n", gdb_stderr
);
1855 fputs_unfiltered (prefix
, gdb_stderr
);
1858 /* Print prefix if we printed a newline during the previous call. */
1862 fputs_unfiltered (prefix
, gdb_stderr
);
1865 prev_prefix
= prefix
;
1866 prev_suffix
= suffix
;
1868 /* Output characters in a printable format. */
1869 while ((ch
= *string
++) != '\0')
1875 fputc_unfiltered (ch
, gdb_stderr
);
1878 fprintf_unfiltered (gdb_stderr
, "\\x%02x", ch
& 0xff);
1881 case '\\': fputs_unfiltered ("\\\\", gdb_stderr
); break;
1882 case '\b': fputs_unfiltered ("\\b", gdb_stderr
); break;
1883 case '\f': fputs_unfiltered ("\\f", gdb_stderr
); break;
1884 case '\n': new_line
= 1;
1885 fputs_unfiltered ("\\n", gdb_stderr
); break;
1886 case '\r': fputs_unfiltered ("\\r", gdb_stderr
); break;
1887 case '\t': fputs_unfiltered ("\\t", gdb_stderr
); break;
1888 case '\v': fputs_unfiltered ("\\v", gdb_stderr
); break;
1891 return_p
= ch
== '\r';
1894 /* Print suffix if we printed a newline. */
1897 fputs_unfiltered (suffix
, gdb_stderr
);
1898 fputs_unfiltered ("\n", gdb_stderr
);
1903 /* Print a variable number of ARGS using format FORMAT. If this
1904 information is going to put the amount written (since the last call
1905 to REINITIALIZE_MORE_FILTER or the last page break) over the page size,
1906 call prompt_for_continue to get the users permision to continue.
1908 Unlike fprintf, this function does not return a value.
1910 We implement three variants, vfprintf (takes a vararg list and stream),
1911 fprintf (takes a stream to write on), and printf (the usual).
1913 Note also that a longjmp to top level may occur in this routine
1914 (since prompt_for_continue may do so) so this routine should not be
1915 called when cleanups are not in place. */
1918 vfprintf_maybe_filtered (stream
, format
, args
, filter
)
1925 struct cleanup
*old_cleanups
;
1927 vasprintf (&linebuffer
, format
, args
);
1928 if (linebuffer
== NULL
)
1930 fputs_unfiltered ("\ngdb: virtual memory exhausted.\n", gdb_stderr
);
1933 old_cleanups
= make_cleanup (free
, linebuffer
);
1934 fputs_maybe_filtered (linebuffer
, stream
, filter
);
1935 do_cleanups (old_cleanups
);
1940 vfprintf_filtered (stream
, format
, args
)
1945 vfprintf_maybe_filtered (stream
, format
, args
, 1);
1949 vfprintf_unfiltered (stream
, format
, args
)
1955 struct cleanup
*old_cleanups
;
1957 vasprintf (&linebuffer
, format
, args
);
1958 if (linebuffer
== NULL
)
1960 fputs_unfiltered ("\ngdb: virtual memory exhausted.\n", gdb_stderr
);
1963 old_cleanups
= make_cleanup (free
, linebuffer
);
1964 fputs_unfiltered (linebuffer
, stream
);
1965 do_cleanups (old_cleanups
);
1969 vprintf_filtered (format
, args
)
1973 vfprintf_maybe_filtered (gdb_stdout
, format
, args
, 1);
1977 vprintf_unfiltered (format
, args
)
1981 vfprintf_unfiltered (gdb_stdout
, format
, args
);
1986 #ifdef ANSI_PROTOTYPES
1987 fprintf_filtered (GDB_FILE
*stream
, const char *format
, ...)
1989 fprintf_filtered (va_alist
)
1994 #ifdef ANSI_PROTOTYPES
1995 va_start (args
, format
);
2001 stream
= va_arg (args
, GDB_FILE
*);
2002 format
= va_arg (args
, char *);
2004 vfprintf_filtered (stream
, format
, args
);
2010 #ifdef ANSI_PROTOTYPES
2011 fprintf_unfiltered (GDB_FILE
*stream
, const char *format
, ...)
2013 fprintf_unfiltered (va_alist
)
2018 #ifdef ANSI_PROTOTYPES
2019 va_start (args
, format
);
2025 stream
= va_arg (args
, GDB_FILE
*);
2026 format
= va_arg (args
, char *);
2028 vfprintf_unfiltered (stream
, format
, args
);
2032 /* Like fprintf_filtered, but prints its result indented.
2033 Called as fprintfi_filtered (spaces, stream, format, ...); */
2037 #ifdef ANSI_PROTOTYPES
2038 fprintfi_filtered (int spaces
, GDB_FILE
*stream
, const char *format
, ...)
2040 fprintfi_filtered (va_alist
)
2045 #ifdef ANSI_PROTOTYPES
2046 va_start (args
, format
);
2053 spaces
= va_arg (args
, int);
2054 stream
= va_arg (args
, GDB_FILE
*);
2055 format
= va_arg (args
, char *);
2057 print_spaces_filtered (spaces
, stream
);
2059 vfprintf_filtered (stream
, format
, args
);
2066 #ifdef ANSI_PROTOTYPES
2067 printf_filtered (const char *format
, ...)
2069 printf_filtered (va_alist
)
2074 #ifdef ANSI_PROTOTYPES
2075 va_start (args
, format
);
2080 format
= va_arg (args
, char *);
2082 vfprintf_filtered (gdb_stdout
, format
, args
);
2089 #ifdef ANSI_PROTOTYPES
2090 printf_unfiltered (const char *format
, ...)
2092 printf_unfiltered (va_alist
)
2097 #ifdef ANSI_PROTOTYPES
2098 va_start (args
, format
);
2103 format
= va_arg (args
, char *);
2105 vfprintf_unfiltered (gdb_stdout
, format
, args
);
2109 /* Like printf_filtered, but prints it's result indented.
2110 Called as printfi_filtered (spaces, format, ...); */
2114 #ifdef ANSI_PROTOTYPES
2115 printfi_filtered (int spaces
, const char *format
, ...)
2117 printfi_filtered (va_alist
)
2122 #ifdef ANSI_PROTOTYPES
2123 va_start (args
, format
);
2129 spaces
= va_arg (args
, int);
2130 format
= va_arg (args
, char *);
2132 print_spaces_filtered (spaces
, gdb_stdout
);
2133 vfprintf_filtered (gdb_stdout
, format
, args
);
2137 /* Easy -- but watch out!
2139 This routine is *not* a replacement for puts()! puts() appends a newline.
2140 This one doesn't, and had better not! */
2143 puts_filtered (string
)
2146 fputs_filtered (string
, gdb_stdout
);
2150 puts_unfiltered (string
)
2153 fputs_unfiltered (string
, gdb_stdout
);
2156 /* Return a pointer to N spaces and a null. The pointer is good
2157 until the next call to here. */
2163 static char *spaces
= 0;
2164 static int max_spaces
= -1;
2170 spaces
= (char *) xmalloc (n
+1);
2171 for (t
= spaces
+n
; t
!= spaces
;)
2177 return spaces
+ max_spaces
- n
;
2180 /* Print N spaces. */
2182 print_spaces_filtered (n
, stream
)
2186 fputs_filtered (n_spaces (n
), stream
);
2189 /* C++ demangler stuff. */
2191 /* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language
2192 LANG, using demangling args ARG_MODE, and print it filtered to STREAM.
2193 If the name is not mangled, or the language for the name is unknown, or
2194 demangling is off, the name is printed in its "raw" form. */
2197 fprintf_symbol_filtered (stream
, name
, lang
, arg_mode
)
2207 /* If user wants to see raw output, no problem. */
2210 fputs_filtered (name
, stream
);
2216 case language_cplus
:
2217 demangled
= cplus_demangle (name
, arg_mode
);
2220 demangled
= cplus_demangle (name
, arg_mode
| DMGL_JAVA
);
2222 case language_chill
:
2223 demangled
= chill_demangle (name
);
2229 fputs_filtered (demangled
? demangled
: name
, stream
);
2230 if (demangled
!= NULL
)
2238 /* Do a strcmp() type operation on STRING1 and STRING2, ignoring any
2239 differences in whitespace. Returns 0 if they match, non-zero if they
2240 don't (slightly different than strcmp()'s range of return values).
2242 As an extra hack, string1=="FOO(ARGS)" matches string2=="FOO".
2243 This "feature" is useful when searching for matching C++ function names
2244 (such as if the user types 'break FOO', where FOO is a mangled C++
2248 strcmp_iw (string1
, string2
)
2249 const char *string1
;
2250 const char *string2
;
2252 while ((*string1
!= '\0') && (*string2
!= '\0'))
2254 while (isspace (*string1
))
2258 while (isspace (*string2
))
2262 if (*string1
!= *string2
)
2266 if (*string1
!= '\0')
2272 return (*string1
!= '\0' && *string1
!= '(') || (*string2
!= '\0');
2278 ** Answer whether string_to_compare is a full or partial match to
2279 ** template_string. The partial match must be in sequence starting
2283 subset_compare (string_to_compare
, template_string
)
2284 char *string_to_compare
;
2285 char *template_string
;
2288 if (template_string
!= (char *)NULL
&& string_to_compare
!= (char *)NULL
&&
2289 strlen(string_to_compare
) <= strlen(template_string
))
2290 match
= (strncmp(template_string
,
2292 strlen(string_to_compare
)) == 0);
2299 static void pagination_on_command
PARAMS ((char *arg
, int from_tty
));
2301 pagination_on_command (arg
, from_tty
)
2305 pagination_enabled
= 1;
2308 static void pagination_on_command
PARAMS ((char *arg
, int from_tty
));
2310 pagination_off_command (arg
, from_tty
)
2314 pagination_enabled
= 0;
2321 struct cmd_list_element
*c
;
2323 c
= add_set_cmd ("width", class_support
, var_uinteger
,
2324 (char *)&chars_per_line
,
2325 "Set number of characters gdb thinks are in a line.",
2327 add_show_from_set (c
, &showlist
);
2328 c
->function
.sfunc
= set_width_command
;
2331 (add_set_cmd ("height", class_support
,
2332 var_uinteger
, (char *)&lines_per_page
,
2333 "Set number of lines gdb thinks are in a page.", &setlist
),
2338 /* If the output is not a terminal, don't paginate it. */
2339 if (!GDB_FILE_ISATTY (gdb_stdout
))
2340 lines_per_page
= UINT_MAX
;
2342 set_width_command ((char *)NULL
, 0, c
);
2345 (add_set_cmd ("demangle", class_support
, var_boolean
,
2347 "Set demangling of encoded C++ names when displaying symbols.",
2352 (add_set_cmd ("pagination", class_support
,
2353 var_boolean
, (char *)&pagination_enabled
,
2354 "Set state of pagination.", &setlist
),
2358 add_com("am", class_support
, pagination_on_command
,
2359 "Enable pagination");
2360 add_com("sm", class_support
, pagination_off_command
,
2361 "Disable pagination");
2365 (add_set_cmd ("sevenbit-strings", class_support
, var_boolean
,
2366 (char *)&sevenbit_strings
,
2367 "Set printing of 8-bit characters in strings as \\nnn.",
2372 (add_set_cmd ("asm-demangle", class_support
, var_boolean
,
2373 (char *)&asm_demangle
,
2374 "Set demangling of C++ names in disassembly listings.",
2379 /* Machine specific function to handle SIGWINCH signal. */
2381 #ifdef SIGWINCH_HANDLER_BODY
2382 SIGWINCH_HANDLER_BODY
2385 /* Support for converting target fp numbers into host DOUBLEST format. */
2387 /* XXX - This code should really be in libiberty/floatformat.c, however
2388 configuration issues with libiberty made this very difficult to do in the
2391 #include "floatformat.h"
2392 #include <math.h> /* ldexp */
2394 /* The odds that CHAR_BIT will be anything but 8 are low enough that I'm not
2395 going to bother with trying to muck around with whether it is defined in
2396 a system header, what we do if not, etc. */
2397 #define FLOATFORMAT_CHAR_BIT 8
2399 static unsigned long get_field
PARAMS ((unsigned char *,
2400 enum floatformat_byteorders
,
2405 /* Extract a field which starts at START and is LEN bytes long. DATA and
2406 TOTAL_LEN are the thing we are extracting it from, in byteorder ORDER. */
2407 static unsigned long
2408 get_field (data
, order
, total_len
, start
, len
)
2409 unsigned char *data
;
2410 enum floatformat_byteorders order
;
2411 unsigned int total_len
;
2415 unsigned long result
;
2416 unsigned int cur_byte
;
2419 /* Start at the least significant part of the field. */
2420 cur_byte
= (start
+ len
) / FLOATFORMAT_CHAR_BIT
;
2421 if (order
== floatformat_little
|| order
== floatformat_littlebyte_bigword
)
2422 cur_byte
= (total_len
/ FLOATFORMAT_CHAR_BIT
) - cur_byte
- 1;
2424 ((start
+ len
) % FLOATFORMAT_CHAR_BIT
) - FLOATFORMAT_CHAR_BIT
;
2425 result
= *(data
+ cur_byte
) >> (-cur_bitshift
);
2426 cur_bitshift
+= FLOATFORMAT_CHAR_BIT
;
2427 if (order
== floatformat_little
|| order
== floatformat_littlebyte_bigword
)
2432 /* Move towards the most significant part of the field. */
2433 while (cur_bitshift
< len
)
2435 if (len
- cur_bitshift
< FLOATFORMAT_CHAR_BIT
)
2436 /* This is the last byte; zero out the bits which are not part of
2439 (*(data
+ cur_byte
) & ((1 << (len
- cur_bitshift
)) - 1))
2442 result
|= *(data
+ cur_byte
) << cur_bitshift
;
2443 cur_bitshift
+= FLOATFORMAT_CHAR_BIT
;
2444 if (order
== floatformat_little
|| order
== floatformat_littlebyte_bigword
)
2452 /* Convert from FMT to a DOUBLEST.
2453 FROM is the address of the extended float.
2454 Store the DOUBLEST in *TO. */
2457 floatformat_to_doublest (fmt
, from
, to
)
2458 const struct floatformat
*fmt
;
2462 unsigned char *ufrom
= (unsigned char *)from
;
2466 unsigned int mant_bits
, mant_off
;
2468 int special_exponent
; /* It's a NaN, denorm or zero */
2470 /* If the mantissa bits are not contiguous from one end of the
2471 mantissa to the other, we need to make a private copy of the
2472 source bytes that is in the right order since the unpacking
2473 algorithm assumes that the bits are contiguous.
2475 Swap the bytes individually rather than accessing them through
2476 "long *" since we have no guarantee that they start on a long
2477 alignment, and also sizeof(long) for the host could be different
2478 than sizeof(long) for the target. FIXME: Assumes sizeof(long)
2479 for the target is 4. */
2481 if (fmt
-> byteorder
== floatformat_littlebyte_bigword
)
2483 static unsigned char *newfrom
;
2484 unsigned char *swapin
, *swapout
;
2487 longswaps
= fmt
-> totalsize
/ FLOATFORMAT_CHAR_BIT
;
2490 if (newfrom
== NULL
)
2492 newfrom
= (unsigned char *) xmalloc (fmt
-> totalsize
);
2497 while (longswaps
-- > 0)
2499 /* This is ugly, but efficient */
2500 *swapout
++ = swapin
[4];
2501 *swapout
++ = swapin
[5];
2502 *swapout
++ = swapin
[6];
2503 *swapout
++ = swapin
[7];
2504 *swapout
++ = swapin
[0];
2505 *swapout
++ = swapin
[1];
2506 *swapout
++ = swapin
[2];
2507 *swapout
++ = swapin
[3];
2512 exponent
= get_field (ufrom
, fmt
->byteorder
, fmt
->totalsize
,
2513 fmt
->exp_start
, fmt
->exp_len
);
2514 /* Note that if exponent indicates a NaN, we can't really do anything useful
2515 (not knowing if the host has NaN's, or how to build one). So it will
2516 end up as an infinity or something close; that is OK. */
2518 mant_bits_left
= fmt
->man_len
;
2519 mant_off
= fmt
->man_start
;
2522 special_exponent
= exponent
== 0 || exponent
== fmt
->exp_nan
;
2524 /* Don't bias zero's, denorms or NaNs. */
2525 if (!special_exponent
)
2526 exponent
-= fmt
->exp_bias
;
2528 /* Build the result algebraically. Might go infinite, underflow, etc;
2531 /* If this format uses a hidden bit, explicitly add it in now. Otherwise,
2532 increment the exponent by one to account for the integer bit. */
2534 if (!special_exponent
)
2536 if (fmt
->intbit
== floatformat_intbit_no
)
2537 dto
= ldexp (1.0, exponent
);
2542 while (mant_bits_left
> 0)
2544 mant_bits
= min (mant_bits_left
, 32);
2546 mant
= get_field (ufrom
, fmt
->byteorder
, fmt
->totalsize
,
2547 mant_off
, mant_bits
);
2549 dto
+= ldexp ((double)mant
, exponent
- mant_bits
);
2550 exponent
-= mant_bits
;
2551 mant_off
+= mant_bits
;
2552 mant_bits_left
-= mant_bits
;
2555 /* Negate it if negative. */
2556 if (get_field (ufrom
, fmt
->byteorder
, fmt
->totalsize
, fmt
->sign_start
, 1))
2561 static void put_field
PARAMS ((unsigned char *, enum floatformat_byteorders
,
2567 /* Set a field which starts at START and is LEN bytes long. DATA and
2568 TOTAL_LEN are the thing we are extracting it from, in byteorder ORDER. */
2570 put_field (data
, order
, total_len
, start
, len
, stuff_to_put
)
2571 unsigned char *data
;
2572 enum floatformat_byteorders order
;
2573 unsigned int total_len
;
2576 unsigned long stuff_to_put
;
2578 unsigned int cur_byte
;
2581 /* Start at the least significant part of the field. */
2582 cur_byte
= (start
+ len
) / FLOATFORMAT_CHAR_BIT
;
2583 if (order
== floatformat_little
|| order
== floatformat_littlebyte_bigword
)
2584 cur_byte
= (total_len
/ FLOATFORMAT_CHAR_BIT
) - cur_byte
- 1;
2586 ((start
+ len
) % FLOATFORMAT_CHAR_BIT
) - FLOATFORMAT_CHAR_BIT
;
2587 *(data
+ cur_byte
) &=
2588 ~(((1 << ((start
+ len
) % FLOATFORMAT_CHAR_BIT
)) - 1) << (-cur_bitshift
));
2589 *(data
+ cur_byte
) |=
2590 (stuff_to_put
& ((1 << FLOATFORMAT_CHAR_BIT
) - 1)) << (-cur_bitshift
);
2591 cur_bitshift
+= FLOATFORMAT_CHAR_BIT
;
2592 if (order
== floatformat_little
|| order
== floatformat_littlebyte_bigword
)
2597 /* Move towards the most significant part of the field. */
2598 while (cur_bitshift
< len
)
2600 if (len
- cur_bitshift
< FLOATFORMAT_CHAR_BIT
)
2602 /* This is the last byte. */
2603 *(data
+ cur_byte
) &=
2604 ~((1 << (len
- cur_bitshift
)) - 1);
2605 *(data
+ cur_byte
) |= (stuff_to_put
>> cur_bitshift
);
2608 *(data
+ cur_byte
) = ((stuff_to_put
>> cur_bitshift
)
2609 & ((1 << FLOATFORMAT_CHAR_BIT
) - 1));
2610 cur_bitshift
+= FLOATFORMAT_CHAR_BIT
;
2611 if (order
== floatformat_little
|| order
== floatformat_littlebyte_bigword
)
2618 #ifdef HAVE_LONG_DOUBLE
2619 /* Return the fractional part of VALUE, and put the exponent of VALUE in *EPTR.
2620 The range of the returned value is >= 0.5 and < 1.0. This is equivalent to
2621 frexp, but operates on the long double data type. */
2623 static long double ldfrexp
PARAMS ((long double value
, int *eptr
));
2626 ldfrexp (value
, eptr
)
2633 /* Unfortunately, there are no portable functions for extracting the exponent
2634 of a long double, so we have to do it iteratively by multiplying or dividing
2635 by two until the fraction is between 0.5 and 1.0. */
2643 if (value
>= tmp
) /* Value >= 1.0 */
2644 while (value
>= tmp
)
2649 else if (value
!= 0.0l) /* Value < 1.0 and > 0.0 */
2663 #endif /* HAVE_LONG_DOUBLE */
2666 /* The converse: convert the DOUBLEST *FROM to an extended float
2667 and store where TO points. Neither FROM nor TO have any alignment
2671 floatformat_from_doublest (fmt
, from
, to
)
2672 CONST
struct floatformat
*fmt
;
2679 unsigned int mant_bits
, mant_off
;
2681 unsigned char *uto
= (unsigned char *)to
;
2683 memcpy (&dfrom
, from
, sizeof (dfrom
));
2684 memset (uto
, 0, fmt
->totalsize
/ FLOATFORMAT_CHAR_BIT
);
2686 return; /* Result is zero */
2687 if (dfrom
!= dfrom
) /* Result is NaN */
2690 put_field (uto
, fmt
->byteorder
, fmt
->totalsize
, fmt
->exp_start
,
2691 fmt
->exp_len
, fmt
->exp_nan
);
2692 /* Be sure it's not infinity, but NaN value is irrel */
2693 put_field (uto
, fmt
->byteorder
, fmt
->totalsize
, fmt
->man_start
,
2698 /* If negative, set the sign bit. */
2701 put_field (uto
, fmt
->byteorder
, fmt
->totalsize
, fmt
->sign_start
, 1, 1);
2705 if (dfrom
+ dfrom
== dfrom
&& dfrom
!= 0.0) /* Result is Infinity */
2707 /* Infinity exponent is same as NaN's. */
2708 put_field (uto
, fmt
->byteorder
, fmt
->totalsize
, fmt
->exp_start
,
2709 fmt
->exp_len
, fmt
->exp_nan
);
2710 /* Infinity mantissa is all zeroes. */
2711 put_field (uto
, fmt
->byteorder
, fmt
->totalsize
, fmt
->man_start
,
2716 #ifdef HAVE_LONG_DOUBLE
2717 mant
= ldfrexp (dfrom
, &exponent
);
2719 mant
= frexp (dfrom
, &exponent
);
2722 put_field (uto
, fmt
->byteorder
, fmt
->totalsize
, fmt
->exp_start
, fmt
->exp_len
,
2723 exponent
+ fmt
->exp_bias
- 1);
2725 mant_bits_left
= fmt
->man_len
;
2726 mant_off
= fmt
->man_start
;
2727 while (mant_bits_left
> 0)
2729 unsigned long mant_long
;
2730 mant_bits
= mant_bits_left
< 32 ? mant_bits_left
: 32;
2732 mant
*= 4294967296.0;
2733 mant_long
= (unsigned long)mant
;
2736 /* If the integer bit is implicit, then we need to discard it.
2737 If we are discarding a zero, we should be (but are not) creating
2738 a denormalized number which means adjusting the exponent
2740 if (mant_bits_left
== fmt
->man_len
2741 && fmt
->intbit
== floatformat_intbit_no
)
2749 /* The bits we want are in the most significant MANT_BITS bits of
2750 mant_long. Move them to the least significant. */
2751 mant_long
>>= 32 - mant_bits
;
2754 put_field (uto
, fmt
->byteorder
, fmt
->totalsize
,
2755 mant_off
, mant_bits
, mant_long
);
2756 mant_off
+= mant_bits
;
2757 mant_bits_left
-= mant_bits
;
2759 if (fmt
-> byteorder
== floatformat_littlebyte_bigword
)
2762 unsigned char *swaplow
= uto
;
2763 unsigned char *swaphigh
= uto
+ 4;
2766 for (count
= 0; count
< 4; count
++)
2769 *swaplow
++ = *swaphigh
;
2775 /* temporary storage using circular buffer */
2781 static char buf
[NUMCELLS
][CELLSIZE
];
2783 if (++cell
>=NUMCELLS
) cell
=0;
2787 /* print routines to handle variable size regs, etc.
2789 FIXME: Note that t_addr is a bfd_vma, which is currently either an
2790 unsigned long or unsigned long long, determined at configure time.
2791 If t_addr is an unsigned long long and sizeof (unsigned long long)
2792 is greater than sizeof (unsigned long), then I believe this code will
2793 probably lose, at least for little endian machines. I believe that
2794 it would also be better to eliminate the switch on the absolute size
2795 of t_addr and replace it with a sequence of if statements that compare
2796 sizeof t_addr with sizeof the various types and do the right thing,
2797 which includes knowing whether or not the host supports long long.
2802 static int thirty_two
= 32; /* eliminate warning from compiler on 32-bit systems */
2808 char *paddr_str
=get_cell();
2809 switch (sizeof(t_addr
))
2812 sprintf (paddr_str
, "%08lx%08lx",
2813 (unsigned long) (addr
>> thirty_two
), (unsigned long) (addr
& 0xffffffff));
2816 sprintf (paddr_str
, "%08lx", (unsigned long) addr
);
2819 sprintf (paddr_str
, "%04x", (unsigned short) (addr
& 0xffff));
2822 sprintf (paddr_str
, "%lx", (unsigned long) addr
);
2831 char *preg_str
=get_cell();
2832 switch (sizeof(t_reg
))
2835 sprintf (preg_str
, "%08lx%08lx",
2836 (unsigned long) (reg
>> thirty_two
), (unsigned long) (reg
& 0xffffffff));
2839 sprintf (preg_str
, "%08lx", (unsigned long) reg
);
2842 sprintf (preg_str
, "%04x", (unsigned short) (reg
& 0xffff));
2845 sprintf (preg_str
, "%lx", (unsigned long) reg
);
2854 char *paddr_str
=get_cell();
2855 switch (sizeof(t_addr
))
2859 unsigned long high
= (unsigned long) (addr
>> thirty_two
);
2861 sprintf (paddr_str
, "%lx", (unsigned long) (addr
& 0xffffffff));
2863 sprintf (paddr_str
, "%lx%08lx",
2864 high
, (unsigned long) (addr
& 0xffffffff));
2868 sprintf (paddr_str
, "%lx", (unsigned long) addr
);
2871 sprintf (paddr_str
, "%x", (unsigned short) (addr
& 0xffff));
2874 sprintf (paddr_str
,"%lx", (unsigned long) addr
);
2883 char *preg_str
=get_cell();
2884 switch (sizeof(t_reg
))
2888 unsigned long high
= (unsigned long) (reg
>> thirty_two
);
2890 sprintf (preg_str
, "%lx", (unsigned long) (reg
& 0xffffffff));
2892 sprintf (preg_str
, "%lx%08lx",
2893 high
, (unsigned long) (reg
& 0xffffffff));
2897 sprintf (preg_str
, "%lx", (unsigned long) reg
);
2900 sprintf (preg_str
, "%x", (unsigned short) (reg
& 0xffff));
2903 sprintf (preg_str
, "%lx", (unsigned long) reg
);
2908 /* Helper functions for INNER_THAN */
2910 core_addr_lessthan (lhs
, rhs
)
2918 core_addr_greaterthan (lhs
, rhs
)