1 /* General utility routines for GDB, the GNU debugger.
2 Copyright 1986, 89, 90, 91, 92, 95, 1996 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. */
21 #ifdef ANSI_PROTOTYPES
27 #include "gdb_string.h"
38 #include "expression.h"
44 /* readline defines this. */
47 /* Prototypes for local functions */
49 static void vfprintf_maybe_filtered
PARAMS ((FILE *, const char *, va_list, int));
51 static void fputs_maybe_filtered
PARAMS ((const char *, FILE *, int));
53 #if !defined (NO_MMALLOC) && !defined (NO_MMCHECK)
54 static void malloc_botch
PARAMS ((void));
58 fatal_dump_core
PARAMS((char *, ...));
61 prompt_for_continue
PARAMS ((void));
64 set_width_command
PARAMS ((char *, int, struct cmd_list_element
*));
66 /* If this definition isn't overridden by the header files, assume
67 that isatty and fileno exist on this system. */
69 #define ISATTY(FP) (isatty (fileno (FP)))
72 /* Chain of cleanup actions established with make_cleanup,
73 to be executed if an error happens. */
75 static struct cleanup
*cleanup_chain
; /* cleaned up after a failed command */
76 static struct cleanup
*final_cleanup_chain
; /* cleaned up when gdb exits */
78 /* Nonzero if we have job control. */
82 /* Nonzero means a quit has been requested. */
86 /* Nonzero means quit immediately if Control-C is typed now, rather
87 than waiting until QUIT is executed. Be careful in setting this;
88 code which executes with immediate_quit set has to be very careful
89 about being able to deal with being interrupted at any time. It is
90 almost always better to use QUIT; the only exception I can think of
91 is being able to quit out of a system call (using EINTR loses if
92 the SIGINT happens between the previous QUIT and the system call).
93 To immediately quit in the case in which a SIGINT happens between
94 the previous QUIT and setting immediate_quit (desirable anytime we
95 expect to block), call QUIT after setting immediate_quit. */
99 /* Nonzero means that encoded C++ names should be printed out in their
100 C++ form rather than raw. */
104 /* Nonzero means that encoded C++ names should be printed out in their
105 C++ form even in assembler language displays. If this is set, but
106 DEMANGLE is zero, names are printed raw, i.e. DEMANGLE controls. */
108 int asm_demangle
= 0;
110 /* Nonzero means that strings with character values >0x7F should be printed
111 as octal escapes. Zero means just print the value (e.g. it's an
112 international character, and the terminal or window can cope.) */
114 int sevenbit_strings
= 0;
116 /* String to be printed before error messages, if any. */
118 char *error_pre_print
;
120 /* String to be printed before quit messages, if any. */
122 char *quit_pre_print
;
124 /* String to be printed before warning messages, if any. */
126 char *warning_pre_print
= "\nwarning: ";
128 /* Add a new cleanup to the cleanup_chain,
129 and return the previous chain pointer
130 to be passed later to do_cleanups or discard_cleanups.
131 Args are FUNCTION to clean up with, and ARG to pass to it. */
134 make_cleanup (function
, arg
)
135 void (*function
) PARAMS ((PTR
));
138 return make_my_cleanup (&cleanup_chain
, function
, arg
);
142 make_final_cleanup (function
, arg
)
143 void (*function
) PARAMS ((PTR
));
146 return make_my_cleanup (&final_cleanup_chain
, function
, arg
);
149 make_my_cleanup (pmy_chain
, function
, arg
)
150 struct cleanup
**pmy_chain
;
151 void (*function
) PARAMS ((PTR
));
154 register struct cleanup
*new
155 = (struct cleanup
*) xmalloc (sizeof (struct cleanup
));
156 register struct cleanup
*old_chain
= *pmy_chain
;
158 new->next
= *pmy_chain
;
159 new->function
= function
;
166 /* Discard cleanups and do the actions they describe
167 until we get back to the point OLD_CHAIN in the cleanup_chain. */
170 do_cleanups (old_chain
)
171 register struct cleanup
*old_chain
;
173 do_my_cleanups (&cleanup_chain
, old_chain
);
177 do_final_cleanups (old_chain
)
178 register struct cleanup
*old_chain
;
180 do_my_cleanups (&final_cleanup_chain
, old_chain
);
184 do_my_cleanups (pmy_chain
, old_chain
)
185 register struct cleanup
**pmy_chain
;
186 register struct cleanup
*old_chain
;
188 register struct cleanup
*ptr
;
189 while ((ptr
= *pmy_chain
) != old_chain
)
191 *pmy_chain
= ptr
->next
; /* Do this first incase recursion */
192 (*ptr
->function
) (ptr
->arg
);
197 /* Discard cleanups, not doing the actions they describe,
198 until we get back to the point OLD_CHAIN in the cleanup_chain. */
201 discard_cleanups (old_chain
)
202 register struct cleanup
*old_chain
;
204 discard_my_cleanups (&cleanup_chain
, old_chain
);
208 discard_final_cleanups (old_chain
)
209 register struct cleanup
*old_chain
;
211 discard_my_cleanups (&final_cleanup_chain
, old_chain
);
215 discard_my_cleanups (pmy_chain
, old_chain
)
216 register struct cleanup
**pmy_chain
;
217 register struct cleanup
*old_chain
;
219 register struct cleanup
*ptr
;
220 while ((ptr
= *pmy_chain
) != old_chain
)
222 *pmy_chain
= ptr
->next
;
227 /* Set the cleanup_chain to 0, and return the old cleanup chain. */
231 return save_my_cleanups (&cleanup_chain
);
235 save_final_cleanups ()
237 return save_my_cleanups (&final_cleanup_chain
);
241 save_my_cleanups (pmy_chain
)
242 struct cleanup
**pmy_chain
;
244 struct cleanup
*old_chain
= *pmy_chain
;
250 /* Restore the cleanup chain from a previously saved chain. */
252 restore_cleanups (chain
)
253 struct cleanup
*chain
;
255 restore_my_cleanups (&cleanup_chain
, chain
);
259 restore_final_cleanups (chain
)
260 struct cleanup
*chain
;
262 restore_my_cleanups (&final_cleanup_chain
, chain
);
266 restore_my_cleanups (pmy_chain
, chain
)
267 struct cleanup
**pmy_chain
;
268 struct cleanup
*chain
;
273 /* This function is useful for cleanups.
277 old_chain = make_cleanup (free_current_contents, &foo);
279 to arrange to free the object thus allocated. */
282 free_current_contents (location
)
288 /* Provide a known function that does nothing, to use as a base for
289 for a possibly long chain of cleanups. This is useful where we
290 use the cleanup chain for handling normal cleanups as well as dealing
291 with cleanups that need to be done as a result of a call to error().
292 In such cases, we may not be certain where the first cleanup is, unless
293 we have a do-nothing one to always use as the base. */
303 /* Print a warning message. Way to use this is to call warning_begin,
304 output the warning message (use unfiltered output to gdb_stderr),
305 ending in a newline. There is not currently a warning_end that you
306 call afterwards, but such a thing might be added if it is useful
307 for a GUI to separate warning messages from other output.
309 FIXME: Why do warnings use unfiltered output and errors filtered?
310 Is this anything other than a historical accident? */
315 target_terminal_ours ();
316 wrap_here(""); /* Force out any buffered output */
317 gdb_flush (gdb_stdout
);
318 if (warning_pre_print
)
319 fprintf_unfiltered (gdb_stderr
, warning_pre_print
);
322 /* Print a warning message.
323 The first argument STRING is the warning message, used as a fprintf string,
324 and the remaining args are passed as arguments to it.
325 The primary difference between warnings and errors is that a warning
326 does not force the return to command level. */
330 #ifdef ANSI_PROTOTYPES
331 warning (const char *string
, ...)
338 #ifdef ANSI_PROTOTYPES
339 va_start (args
, string
);
344 string
= va_arg (args
, char *);
347 vfprintf_unfiltered (gdb_stderr
, string
, args
);
348 fprintf_unfiltered (gdb_stderr
, "\n");
352 /* Start the printing of an error message. Way to use this is to call
353 this, output the error message (use filtered output to gdb_stderr
354 (FIXME: Some callers, like memory_error, use gdb_stdout)), ending
355 in a newline, and then call return_to_top_level (RETURN_ERROR).
356 error() provides a convenient way to do this for the special case
357 that the error message can be formatted with a single printf call,
358 but this is more general. */
362 target_terminal_ours ();
363 wrap_here (""); /* Force out any buffered output */
364 gdb_flush (gdb_stdout
);
366 annotate_error_begin ();
369 fprintf_filtered (gdb_stderr
, error_pre_print
);
372 /* Print an error message and return to command level.
373 The first argument STRING is the error message, used as a fprintf string,
374 and the remaining args are passed as arguments to it. */
378 #ifdef ANSI_PROTOTYPES
379 error (const char *string
, ...)
387 #ifdef ANSI_PROTOTYPES
388 va_start (args
, string
);
397 #ifdef ANSI_PROTOTYPES
398 vfprintf_filtered (gdb_stderr
, string
, args
);
403 string1
= va_arg (args
, char *);
404 vfprintf_filtered (gdb_stderr
, string1
, args
);
407 fprintf_filtered (gdb_stderr
, "\n");
409 return_to_top_level (RETURN_ERROR
);
414 /* Print an error message and exit reporting failure.
415 This is for a error that we cannot continue from.
416 The arguments are printed a la printf.
418 This function cannot be declared volatile (NORETURN) in an
419 ANSI environment because exit() is not declared volatile. */
423 #ifdef ANSI_PROTOTYPES
424 fatal (char *string
, ...)
431 #ifdef ANSI_PROTOTYPES
432 va_start (args
, string
);
436 string
= va_arg (args
, char *);
438 fprintf_unfiltered (gdb_stderr
, "\ngdb: ");
439 vfprintf_unfiltered (gdb_stderr
, string
, args
);
440 fprintf_unfiltered (gdb_stderr
, "\n");
445 /* Print an error message and exit, dumping core.
446 The arguments are printed a la printf (). */
450 #ifdef ANSI_PROTOTYPES
451 fatal_dump_core (char *string
, ...)
453 fatal_dump_core (va_alist
)
458 #ifdef ANSI_PROTOTYPES
459 va_start (args
, string
);
464 string
= va_arg (args
, char *);
466 /* "internal error" is always correct, since GDB should never dump
467 core, no matter what the input. */
468 fprintf_unfiltered (gdb_stderr
, "\ngdb internal error: ");
469 vfprintf_unfiltered (gdb_stderr
, string
, args
);
470 fprintf_unfiltered (gdb_stderr
, "\n");
473 signal (SIGQUIT
, SIG_DFL
);
474 kill (getpid (), SIGQUIT
);
475 /* We should never get here, but just in case... */
479 /* The strerror() function can return NULL for errno values that are
480 out of range. Provide a "safe" version that always returns a
484 safe_strerror (errnum
)
490 if ((msg
= strerror (errnum
)) == NULL
)
492 sprintf (buf
, "(undocumented errno %d)", errnum
);
498 /* The strsignal() function can return NULL for signal values that are
499 out of range. Provide a "safe" version that always returns a
503 safe_strsignal (signo
)
509 if ((msg
= strsignal (signo
)) == NULL
)
511 sprintf (buf
, "(undocumented signal %d)", signo
);
518 /* Print the system error message for errno, and also mention STRING
519 as the file name for which the error was encountered.
520 Then return to command level. */
523 perror_with_name (string
)
529 err
= safe_strerror (errno
);
530 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
531 strcpy (combined
, string
);
532 strcat (combined
, ": ");
533 strcat (combined
, err
);
535 /* I understand setting these is a matter of taste. Still, some people
536 may clear errno but not know about bfd_error. Doing this here is not
538 bfd_set_error (bfd_error_no_error
);
541 error ("%s.", combined
);
544 /* Print the system error message for ERRCODE, and also mention STRING
545 as the file name for which the error was encountered. */
548 print_sys_errmsg (string
, errcode
)
555 err
= safe_strerror (errcode
);
556 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
557 strcpy (combined
, string
);
558 strcat (combined
, ": ");
559 strcat (combined
, err
);
561 /* We want anything which was printed on stdout to come out first, before
563 gdb_flush (gdb_stdout
);
564 fprintf_unfiltered (gdb_stderr
, "%s.\n", combined
);
567 /* Control C eventually causes this to be called, at a convenient time. */
572 serial_t gdb_stdout_serial
= serial_fdopen (1);
574 target_terminal_ours ();
576 /* We want all output to appear now, before we print "Quit". We
577 have 3 levels of buffering we have to flush (it's possible that
578 some of these should be changed to flush the lower-level ones
581 /* 1. The _filtered buffer. */
582 wrap_here ((char *)0);
584 /* 2. The stdio buffer. */
585 gdb_flush (gdb_stdout
);
586 gdb_flush (gdb_stderr
);
588 /* 3. The system-level buffer. */
589 SERIAL_FLUSH_OUTPUT (gdb_stdout_serial
);
590 SERIAL_UN_FDOPEN (gdb_stdout_serial
);
592 annotate_error_begin ();
594 /* Don't use *_filtered; we don't want to prompt the user to continue. */
596 fprintf_unfiltered (gdb_stderr
, quit_pre_print
);
599 /* If there is no terminal switching for this target, then we can't
600 possibly get screwed by the lack of job control. */
601 || current_target
.to_terminal_ours
== NULL
)
602 fprintf_unfiltered (gdb_stderr
, "Quit\n");
604 fprintf_unfiltered (gdb_stderr
,
605 "Quit (expect signal SIGINT when the program is resumed)\n");
606 return_to_top_level (RETURN_QUIT
);
610 #if defined(__GO32__)
612 /* In the absence of signals, poll keyboard for a quit.
613 Called from #define QUIT pollquit() in xm-go32.h. */
628 /* We just ignore it */
629 /* FIXME!! Don't think this actually works! */
630 fprintf_unfiltered (gdb_stderr
, "CTRL-A to quit, CTRL-B to quit harder\n");
635 #elif defined(_MSC_VER) /* should test for wingdb instead? */
638 * Windows translates all keyboard and mouse events
639 * into a message which is appended to the message
640 * queue for the process.
645 int k
= win32pollquit();
652 #else /* !defined(__GO32__) && !defined(_MSC_VER) */
656 /* Done by signals */
659 #endif /* !defined(__GO32__) && !defined(_MSC_VER) */
665 if (quit_flag
|| immediate_quit
)
669 /* Control C comes here */
676 /* Restore the signal handler. Harmless with BSD-style signals, needed
677 for System V-style signals. So just always do it, rather than worrying
678 about USG defines and stuff like that. */
679 signal (signo
, request_quit
);
681 /* start-sanitize-gm */
684 #endif /* GENERAL_MAGIC */
685 /* end-sanitize-gm */
696 /* Memory management stuff (malloc friends). */
698 /* Make a substitute size_t for non-ANSI compilers. */
700 #ifndef HAVE_STDDEF_H
702 #define size_t unsigned int
706 #if defined (NO_MMALLOC)
713 return malloc (size
);
717 mrealloc (md
, ptr
, size
)
722 if (ptr
== 0) /* Guard against old realloc's */
723 return malloc (size
);
725 return realloc (ptr
, size
);
736 #endif /* NO_MMALLOC */
738 #if defined (NO_MMALLOC) || defined (NO_MMCHECK)
746 #else /* Have mmalloc and want corruption checking */
751 fatal_dump_core ("Memory corruption");
754 /* Attempt to install hooks in mmalloc/mrealloc/mfree for the heap specified
755 by MD, to detect memory corruption. Note that MD may be NULL to specify
756 the default heap that grows via sbrk.
758 Note that for freshly created regions, we must call mmcheckf prior to any
759 mallocs in the region. Otherwise, any region which was allocated prior to
760 installing the checking hooks, which is later reallocated or freed, will
761 fail the checks! The mmcheck function only allows initial hooks to be
762 installed before the first mmalloc. However, anytime after we have called
763 mmcheck the first time to install the checking hooks, we can call it again
764 to update the function pointer to the memory corruption handler.
766 Returns zero on failure, non-zero on success. */
768 #ifndef MMCHECK_FORCE
769 #define MMCHECK_FORCE 0
776 if (!mmcheckf (md
, malloc_botch
, MMCHECK_FORCE
))
778 /* Don't use warning(), which relies on current_target being set
779 to something other than dummy_target, until after
780 initialize_all_files(). */
783 (gdb_stderr
, "warning: failed to install memory consistency checks; ");
785 (gdb_stderr
, "configuration should define NO_MMCHECK or MMCHECK_FORCE\n");
791 #endif /* Have mmalloc and want corruption checking */
793 /* Called when a memory allocation fails, with the number of bytes of
794 memory requested in SIZE. */
802 fatal ("virtual memory exhausted: can't allocate %ld bytes.", size
);
806 fatal ("virtual memory exhausted.");
810 /* Like mmalloc but get error if no storage available, and protect against
811 the caller wanting to allocate zero bytes. Whether to return NULL for
812 a zero byte request, or translate the request into a request for one
813 byte of zero'd storage, is a religious issue. */
826 else if ((val
= mmalloc (md
, size
)) == NULL
)
833 /* Like mrealloc but get error if no storage available. */
836 xmrealloc (md
, ptr
, size
)
845 val
= mrealloc (md
, ptr
, size
);
849 val
= mmalloc (md
, size
);
858 /* Like malloc but get error if no storage available, and protect against
859 the caller wanting to allocate zero bytes. */
865 return (xmmalloc ((PTR
) NULL
, size
));
868 /* Like mrealloc but get error if no storage available. */
875 return (xmrealloc ((PTR
) NULL
, ptr
, size
));
879 /* My replacement for the read system call.
880 Used like `read' but keeps going if `read' returns too soon. */
883 myread (desc
, addr
, len
)
893 val
= read (desc
, addr
, len
);
904 /* Make a copy of the string at PTR with SIZE characters
905 (and add a null character at the end in the copy).
906 Uses malloc to get the space. Returns the address of the copy. */
909 savestring (ptr
, size
)
913 register char *p
= (char *) xmalloc (size
+ 1);
914 memcpy (p
, ptr
, size
);
920 msavestring (md
, ptr
, size
)
925 register char *p
= (char *) xmmalloc (md
, size
+ 1);
926 memcpy (p
, ptr
, size
);
931 /* The "const" is so it compiles under DGUX (which prototypes strsave
932 in <string.h>. FIXME: This should be named "xstrsave", shouldn't it?
933 Doesn't real strsave return NULL if out of memory? */
938 return savestring (ptr
, strlen (ptr
));
946 return (msavestring (md
, ptr
, strlen (ptr
)));
950 print_spaces (n
, file
)
958 /* Print a host address. */
961 gdb_print_address (addr
, stream
)
966 /* We could use the %p conversion specifier to fprintf if we had any
967 way of knowing whether this host supports it. But the following
968 should work on the Alpha and on 32 bit machines. */
970 fprintf_filtered (stream
, "0x%lx", (unsigned long)addr
);
973 /* Ask user a y-or-n question and return 1 iff answer is yes.
974 Takes three args which are given to printf to print the question.
975 The first, a control string, should end in "? ".
976 It should not say how to answer, because we do that. */
980 #ifdef ANSI_PROTOTYPES
981 query (char *ctlstr
, ...)
992 #ifdef ANSI_PROTOTYPES
993 va_start (args
, ctlstr
);
997 ctlstr
= va_arg (args
, char *);
1002 return query_hook (ctlstr
, args
);
1005 /* Automatically answer "yes" if input is not from a terminal. */
1006 if (!input_from_terminal_p ())
1009 /* FIXME Automatically answer "yes" if called from MacGDB. */
1016 wrap_here (""); /* Flush any buffered output */
1017 gdb_flush (gdb_stdout
);
1019 if (annotation_level
> 1)
1020 printf_filtered ("\n\032\032pre-query\n");
1022 vfprintf_filtered (gdb_stdout
, ctlstr
, args
);
1023 printf_filtered ("(y or n) ");
1025 if (annotation_level
> 1)
1026 printf_filtered ("\n\032\032query\n");
1029 /* If not in MacGDB, move to a new line so the entered line doesn't
1030 have a prompt on the front of it. */
1032 fputs_unfiltered ("\n", gdb_stdout
);
1035 gdb_flush (gdb_stdout
);
1036 answer
= fgetc (stdin
);
1037 clearerr (stdin
); /* in case of C-d */
1038 if (answer
== EOF
) /* C-d */
1043 if (answer
!= '\n') /* Eat rest of input line, to EOF or newline */
1046 ans2
= fgetc (stdin
);
1049 while (ans2
!= EOF
&& ans2
!= '\n');
1062 printf_filtered ("Please answer y or n.\n");
1065 if (annotation_level
> 1)
1066 printf_filtered ("\n\032\032post-query\n");
1071 /* Parse a C escape sequence. STRING_PTR points to a variable
1072 containing a pointer to the string to parse. That pointer
1073 should point to the character after the \. That pointer
1074 is updated past the characters we use. The value of the
1075 escape sequence is returned.
1077 A negative value means the sequence \ newline was seen,
1078 which is supposed to be equivalent to nothing at all.
1080 If \ is followed by a null character, we return a negative
1081 value and leave the string pointer pointing at the null character.
1083 If \ is followed by 000, we return 0 and leave the string pointer
1084 after the zeros. A value of 0 does not mean end of string. */
1087 parse_escape (string_ptr
)
1090 register int c
= *(*string_ptr
)++;
1094 return 007; /* Bell (alert) char */
1097 case 'e': /* Escape character */
1115 c
= *(*string_ptr
)++;
1117 c
= parse_escape (string_ptr
);
1120 return (c
& 0200) | (c
& 037);
1131 register int i
= c
- '0';
1132 register int count
= 0;
1135 if ((c
= *(*string_ptr
)++) >= '0' && c
<= '7')
1153 /* Print the character C on STREAM as part of the contents of a literal
1154 string whose delimiter is QUOTER. Note that this routine should only
1155 be call for printing things which are independent of the language
1156 of the program being debugged. */
1159 gdb_printchar (c
, stream
, quoter
)
1165 c
&= 0xFF; /* Avoid sign bit follies */
1167 if ( c
< 0x20 || /* Low control chars */
1168 (c
>= 0x7F && c
< 0xA0) || /* DEL, High controls */
1169 (sevenbit_strings
&& c
>= 0x80)) { /* high order bit set */
1173 fputs_filtered ("\\n", stream
);
1176 fputs_filtered ("\\b", stream
);
1179 fputs_filtered ("\\t", stream
);
1182 fputs_filtered ("\\f", stream
);
1185 fputs_filtered ("\\r", stream
);
1188 fputs_filtered ("\\e", stream
);
1191 fputs_filtered ("\\a", stream
);
1194 fprintf_filtered (stream
, "\\%.3o", (unsigned int) c
);
1198 if (c
== '\\' || c
== quoter
)
1199 fputs_filtered ("\\", stream
);
1200 fprintf_filtered (stream
, "%c", c
);
1204 /* Number of lines per page or UINT_MAX if paging is disabled. */
1205 static unsigned int lines_per_page
;
1206 /* Number of chars per line or UNIT_MAX is line folding is disabled. */
1207 static unsigned int chars_per_line
;
1208 /* Current count of lines printed on this page, chars on this line. */
1209 static unsigned int lines_printed
, chars_printed
;
1211 /* Buffer and start column of buffered text, for doing smarter word-
1212 wrapping. When someone calls wrap_here(), we start buffering output
1213 that comes through fputs_filtered(). If we see a newline, we just
1214 spit it out and forget about the wrap_here(). If we see another
1215 wrap_here(), we spit it out and remember the newer one. If we see
1216 the end of the line, we spit out a newline, the indent, and then
1217 the buffered output. */
1219 /* Malloc'd buffer with chars_per_line+2 bytes. Contains characters which
1220 are waiting to be output (they have already been counted in chars_printed).
1221 When wrap_buffer[0] is null, the buffer is empty. */
1222 static char *wrap_buffer
;
1224 /* Pointer in wrap_buffer to the next character to fill. */
1225 static char *wrap_pointer
;
1227 /* String to indent by if the wrap occurs. Must not be NULL if wrap_column
1229 static char *wrap_indent
;
1231 /* Column number on the screen where wrap_buffer begins, or 0 if wrapping
1232 is not in effect. */
1233 static int wrap_column
;
1237 set_width_command (args
, from_tty
, c
)
1240 struct cmd_list_element
*c
;
1244 wrap_buffer
= (char *) xmalloc (chars_per_line
+ 2);
1245 wrap_buffer
[0] = '\0';
1248 wrap_buffer
= (char *) xrealloc (wrap_buffer
, chars_per_line
+ 2);
1249 wrap_pointer
= wrap_buffer
; /* Start it at the beginning */
1252 /* Wait, so the user can read what's on the screen. Prompt the user
1253 to continue by pressing RETURN. */
1256 prompt_for_continue ()
1259 char cont_prompt
[120];
1261 if (annotation_level
> 1)
1262 printf_unfiltered ("\n\032\032pre-prompt-for-continue\n");
1264 strcpy (cont_prompt
,
1265 "---Type <return> to continue, or q <return> to quit---");
1266 if (annotation_level
> 1)
1267 strcat (cont_prompt
, "\n\032\032prompt-for-continue\n");
1269 /* We must do this *before* we call gdb_readline, else it will eventually
1270 call us -- thinking that we're trying to print beyond the end of the
1272 reinitialize_more_filter ();
1275 /* On a real operating system, the user can quit with SIGINT.
1278 'q' is provided on all systems so users don't have to change habits
1279 from system to system, and because telling them what to do in
1280 the prompt is more user-friendly than expecting them to think of
1282 /* Call readline, not gdb_readline, because GO32 readline handles control-C
1283 whereas control-C to gdb_readline will cause the user to get dumped
1285 ignore
= readline (cont_prompt
);
1287 if (annotation_level
> 1)
1288 printf_unfiltered ("\n\032\032post-prompt-for-continue\n");
1293 while (*p
== ' ' || *p
== '\t')
1296 request_quit (SIGINT
);
1301 /* Now we have to do this again, so that GDB will know that it doesn't
1302 need to save the ---Type <return>--- line at the top of the screen. */
1303 reinitialize_more_filter ();
1305 dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */
1308 /* Reinitialize filter; ie. tell it to reset to original values. */
1311 reinitialize_more_filter ()
1317 /* Indicate that if the next sequence of characters overflows the line,
1318 a newline should be inserted here rather than when it hits the end.
1319 If INDENT is non-null, it is a string to be printed to indent the
1320 wrapped part on the next line. INDENT must remain accessible until
1321 the next call to wrap_here() or until a newline is printed through
1324 If the line is already overfull, we immediately print a newline and
1325 the indentation, and disable further wrapping.
1327 If we don't know the width of lines, but we know the page height,
1328 we must not wrap words, but should still keep track of newlines
1329 that were explicitly printed.
1331 INDENT should not contain tabs, as that will mess up the char count
1332 on the next line. FIXME.
1334 This routine is guaranteed to force out any output which has been
1335 squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be
1336 used to force out output from the wrap_buffer. */
1342 /* This should have been allocated, but be paranoid anyway. */
1348 *wrap_pointer
= '\0';
1349 fputs_unfiltered (wrap_buffer
, gdb_stdout
);
1351 wrap_pointer
= wrap_buffer
;
1352 wrap_buffer
[0] = '\0';
1353 if (chars_per_line
== UINT_MAX
) /* No line overflow checking */
1357 else if (chars_printed
>= chars_per_line
)
1359 puts_filtered ("\n");
1361 puts_filtered (indent
);
1366 wrap_column
= chars_printed
;
1370 wrap_indent
= indent
;
1374 /* Ensure that whatever gets printed next, using the filtered output
1375 commands, starts at the beginning of the line. I.E. if there is
1376 any pending output for the current line, flush it and start a new
1377 line. Otherwise do nothing. */
1382 if (chars_printed
> 0)
1384 puts_filtered ("\n");
1390 gdb_fopen (name
, mode
)
1394 return fopen (name
, mode
);
1402 && (stream
== gdb_stdout
1403 || stream
== gdb_stderr
))
1405 flush_hook (stream
);
1412 /* Like fputs but if FILTER is true, pause after every screenful.
1414 Regardless of FILTER can wrap at points other than the final
1415 character of a line.
1417 Unlike fputs, fputs_maybe_filtered does not return a value.
1418 It is OK for LINEBUFFER to be NULL, in which case just don't print
1421 Note that a longjmp to top level may occur in this routine (only if
1422 FILTER is true) (since prompt_for_continue may do so) so this
1423 routine should not be called when cleanups are not in place. */
1426 fputs_maybe_filtered (linebuffer
, stream
, filter
)
1427 const char *linebuffer
;
1431 const char *lineptr
;
1433 if (linebuffer
== 0)
1436 /* Don't do any filtering if it is disabled. */
1437 if (stream
!= gdb_stdout
1438 || (lines_per_page
== UINT_MAX
&& chars_per_line
== UINT_MAX
))
1440 fputs_unfiltered (linebuffer
, stream
);
1444 /* Go through and output each character. Show line extension
1445 when this is necessary; prompt user for new page when this is
1448 lineptr
= linebuffer
;
1451 /* Possible new page. */
1453 (lines_printed
>= lines_per_page
- 1))
1454 prompt_for_continue ();
1456 while (*lineptr
&& *lineptr
!= '\n')
1458 /* Print a single line. */
1459 if (*lineptr
== '\t')
1462 *wrap_pointer
++ = '\t';
1464 fputc_unfiltered ('\t', stream
);
1465 /* Shifting right by 3 produces the number of tab stops
1466 we have already passed, and then adding one and
1467 shifting left 3 advances to the next tab stop. */
1468 chars_printed
= ((chars_printed
>> 3) + 1) << 3;
1474 *wrap_pointer
++ = *lineptr
;
1476 fputc_unfiltered (*lineptr
, stream
);
1481 if (chars_printed
>= chars_per_line
)
1483 unsigned int save_chars
= chars_printed
;
1487 /* If we aren't actually wrapping, don't output newline --
1488 if chars_per_line is right, we probably just overflowed
1489 anyway; if it's wrong, let us keep going. */
1491 fputc_unfiltered ('\n', stream
);
1493 /* Possible new page. */
1494 if (lines_printed
>= lines_per_page
- 1)
1495 prompt_for_continue ();
1497 /* Now output indentation and wrapped string */
1500 fputs_unfiltered (wrap_indent
, stream
);
1501 *wrap_pointer
= '\0'; /* Null-terminate saved stuff */
1502 fputs_unfiltered (wrap_buffer
, stream
); /* and eject it */
1503 /* FIXME, this strlen is what prevents wrap_indent from
1504 containing tabs. However, if we recurse to print it
1505 and count its chars, we risk trouble if wrap_indent is
1506 longer than (the user settable) chars_per_line.
1507 Note also that this can set chars_printed > chars_per_line
1508 if we are printing a long string. */
1509 chars_printed
= strlen (wrap_indent
)
1510 + (save_chars
- wrap_column
);
1511 wrap_pointer
= wrap_buffer
; /* Reset buffer */
1512 wrap_buffer
[0] = '\0';
1513 wrap_column
= 0; /* And disable fancy wrap */
1518 if (*lineptr
== '\n')
1521 wrap_here ((char *)0); /* Spit out chars, cancel further wraps */
1523 fputc_unfiltered ('\n', stream
);
1530 fputs_filtered (linebuffer
, stream
)
1531 const char *linebuffer
;
1534 fputs_maybe_filtered (linebuffer
, stream
, 1);
1538 putchar_unfiltered (c
)
1545 fputs_unfiltered (buf
, gdb_stdout
);
1550 fputc_unfiltered (c
, stream
)
1558 fputs_unfiltered (buf
, stream
);
1563 /* Print a variable number of ARGS using format FORMAT. If this
1564 information is going to put the amount written (since the last call
1565 to REINITIALIZE_MORE_FILTER or the last page break) over the page size,
1566 call prompt_for_continue to get the users permision to continue.
1568 Unlike fprintf, this function does not return a value.
1570 We implement three variants, vfprintf (takes a vararg list and stream),
1571 fprintf (takes a stream to write on), and printf (the usual).
1573 Note also that a longjmp to top level may occur in this routine
1574 (since prompt_for_continue may do so) so this routine should not be
1575 called when cleanups are not in place. */
1578 vfprintf_maybe_filtered (stream
, format
, args
, filter
)
1585 struct cleanup
*old_cleanups
;
1587 vasprintf (&linebuffer
, format
, args
);
1588 if (linebuffer
== NULL
)
1590 fputs_unfiltered ("\ngdb: virtual memory exhausted.\n", gdb_stderr
);
1593 old_cleanups
= make_cleanup (free
, linebuffer
);
1594 fputs_maybe_filtered (linebuffer
, stream
, filter
);
1595 do_cleanups (old_cleanups
);
1600 vfprintf_filtered (stream
, format
, args
)
1605 vfprintf_maybe_filtered (stream
, format
, args
, 1);
1609 vfprintf_unfiltered (stream
, format
, args
)
1615 struct cleanup
*old_cleanups
;
1617 vasprintf (&linebuffer
, format
, args
);
1618 if (linebuffer
== NULL
)
1620 fputs_unfiltered ("\ngdb: virtual memory exhausted.\n", gdb_stderr
);
1623 old_cleanups
= make_cleanup (free
, linebuffer
);
1624 fputs_unfiltered (linebuffer
, stream
);
1625 do_cleanups (old_cleanups
);
1629 vprintf_filtered (format
, args
)
1633 vfprintf_maybe_filtered (gdb_stdout
, format
, args
, 1);
1637 vprintf_unfiltered (format
, args
)
1641 vfprintf_unfiltered (gdb_stdout
, format
, args
);
1646 #ifdef ANSI_PROTOTYPES
1647 fprintf_filtered (FILE *stream
, const char *format
, ...)
1649 fprintf_filtered (va_alist
)
1654 #ifdef ANSI_PROTOTYPES
1655 va_start (args
, format
);
1661 stream
= va_arg (args
, FILE *);
1662 format
= va_arg (args
, char *);
1664 vfprintf_filtered (stream
, format
, args
);
1670 #ifdef ANSI_PROTOTYPES
1671 fprintf_unfiltered (FILE *stream
, const char *format
, ...)
1673 fprintf_unfiltered (va_alist
)
1678 #ifdef ANSI_PROTOTYPES
1679 va_start (args
, format
);
1685 stream
= va_arg (args
, FILE *);
1686 format
= va_arg (args
, char *);
1688 vfprintf_unfiltered (stream
, format
, args
);
1692 /* Like fprintf_filtered, but prints its result indented.
1693 Called as fprintfi_filtered (spaces, stream, format, ...); */
1697 #ifdef ANSI_PROTOTYPES
1698 fprintfi_filtered (int spaces
, FILE *stream
, const char *format
, ...)
1700 fprintfi_filtered (va_alist
)
1705 #ifdef ANSI_PROTOTYPES
1706 va_start (args
, format
);
1713 spaces
= va_arg (args
, int);
1714 stream
= va_arg (args
, FILE *);
1715 format
= va_arg (args
, char *);
1717 print_spaces_filtered (spaces
, stream
);
1719 vfprintf_filtered (stream
, format
, args
);
1726 #ifdef ANSI_PROTOTYPES
1727 printf_filtered (const char *format
, ...)
1729 printf_filtered (va_alist
)
1734 #ifdef ANSI_PROTOTYPES
1735 va_start (args
, format
);
1740 format
= va_arg (args
, char *);
1742 vfprintf_filtered (gdb_stdout
, format
, args
);
1749 #ifdef ANSI_PROTOTYPES
1750 printf_unfiltered (const char *format
, ...)
1752 printf_unfiltered (va_alist
)
1757 #ifdef ANSI_PROTOTYPES
1758 va_start (args
, format
);
1763 format
= va_arg (args
, char *);
1765 vfprintf_unfiltered (gdb_stdout
, format
, args
);
1769 /* Like printf_filtered, but prints it's result indented.
1770 Called as printfi_filtered (spaces, format, ...); */
1774 #ifdef ANSI_PROTOTYPES
1775 printfi_filtered (int spaces
, const char *format
, ...)
1777 printfi_filtered (va_alist
)
1782 #ifdef ANSI_PROTOTYPES
1783 va_start (args
, format
);
1789 spaces
= va_arg (args
, int);
1790 format
= va_arg (args
, char *);
1792 print_spaces_filtered (spaces
, gdb_stdout
);
1793 vfprintf_filtered (gdb_stdout
, format
, args
);
1797 /* Easy -- but watch out!
1799 This routine is *not* a replacement for puts()! puts() appends a newline.
1800 This one doesn't, and had better not! */
1803 puts_filtered (string
)
1806 fputs_filtered (string
, gdb_stdout
);
1810 puts_unfiltered (string
)
1813 fputs_unfiltered (string
, gdb_stdout
);
1816 /* Return a pointer to N spaces and a null. The pointer is good
1817 until the next call to here. */
1823 static char *spaces
;
1824 static int max_spaces
;
1830 spaces
= (char *) xmalloc (n
+1);
1831 for (t
= spaces
+n
; t
!= spaces
;)
1837 return spaces
+ max_spaces
- n
;
1840 /* Print N spaces. */
1842 print_spaces_filtered (n
, stream
)
1846 fputs_filtered (n_spaces (n
), stream
);
1849 /* C++ demangler stuff. */
1851 /* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language
1852 LANG, using demangling args ARG_MODE, and print it filtered to STREAM.
1853 If the name is not mangled, or the language for the name is unknown, or
1854 demangling is off, the name is printed in its "raw" form. */
1857 fprintf_symbol_filtered (stream
, name
, lang
, arg_mode
)
1867 /* If user wants to see raw output, no problem. */
1870 fputs_filtered (name
, stream
);
1876 case language_cplus
:
1877 demangled
= cplus_demangle (name
, arg_mode
);
1879 case language_chill
:
1880 demangled
= chill_demangle (name
);
1886 fputs_filtered (demangled
? demangled
: name
, stream
);
1887 if (demangled
!= NULL
)
1895 /* Do a strcmp() type operation on STRING1 and STRING2, ignoring any
1896 differences in whitespace. Returns 0 if they match, non-zero if they
1897 don't (slightly different than strcmp()'s range of return values).
1899 As an extra hack, string1=="FOO(ARGS)" matches string2=="FOO".
1900 This "feature" is useful when searching for matching C++ function names
1901 (such as if the user types 'break FOO', where FOO is a mangled C++
1905 strcmp_iw (string1
, string2
)
1906 const char *string1
;
1907 const char *string2
;
1909 while ((*string1
!= '\0') && (*string2
!= '\0'))
1911 while (isspace (*string1
))
1915 while (isspace (*string2
))
1919 if (*string1
!= *string2
)
1923 if (*string1
!= '\0')
1929 return (*string1
!= '\0' && *string1
!= '(') || (*string2
!= '\0');
1936 struct cmd_list_element
*c
;
1938 c
= add_set_cmd ("width", class_support
, var_uinteger
,
1939 (char *)&chars_per_line
,
1940 "Set number of characters gdb thinks are in a line.",
1942 add_show_from_set (c
, &showlist
);
1943 c
->function
.sfunc
= set_width_command
;
1946 (add_set_cmd ("height", class_support
,
1947 var_uinteger
, (char *)&lines_per_page
,
1948 "Set number of lines gdb thinks are in a page.", &setlist
),
1951 /* These defaults will be used if we are unable to get the correct
1952 values from termcap. */
1953 #if defined(__GO32__)
1954 lines_per_page
= ScreenRows();
1955 chars_per_line
= ScreenCols();
1957 lines_per_page
= 24;
1958 chars_per_line
= 80;
1960 #if !defined (MPW) && !defined (_WIN32)
1961 /* No termcap under MPW, although might be cool to do something
1962 by looking at worksheet or console window sizes. */
1963 /* Initialize the screen height and width from termcap. */
1965 char *termtype
= getenv ("TERM");
1967 /* Positive means success, nonpositive means failure. */
1970 /* 2048 is large enough for all known terminals, according to the
1971 GNU termcap manual. */
1972 char term_buffer
[2048];
1976 status
= tgetent (term_buffer
, termtype
);
1981 val
= tgetnum ("li");
1983 lines_per_page
= val
;
1985 /* The number of lines per page is not mentioned
1986 in the terminal description. This probably means
1987 that paging is not useful (e.g. emacs shell window),
1988 so disable paging. */
1989 lines_per_page
= UINT_MAX
;
1991 val
= tgetnum ("co");
1993 chars_per_line
= val
;
1999 #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER)
2001 /* If there is a better way to determine the window size, use it. */
2002 SIGWINCH_HANDLER ();
2005 /* If the output is not a terminal, don't paginate it. */
2006 if (!ISATTY (gdb_stdout
))
2007 lines_per_page
= UINT_MAX
;
2009 set_width_command ((char *)NULL
, 0, c
);
2012 (add_set_cmd ("demangle", class_support
, var_boolean
,
2014 "Set demangling of encoded C++ names when displaying symbols.",
2019 (add_set_cmd ("sevenbit-strings", class_support
, var_boolean
,
2020 (char *)&sevenbit_strings
,
2021 "Set printing of 8-bit characters in strings as \\nnn.",
2026 (add_set_cmd ("asm-demangle", class_support
, var_boolean
,
2027 (char *)&asm_demangle
,
2028 "Set demangling of C++ names in disassembly listings.",
2033 /* Machine specific function to handle SIGWINCH signal. */
2035 #ifdef SIGWINCH_HANDLER_BODY
2036 SIGWINCH_HANDLER_BODY
2039 /* Support for converting target fp numbers into host DOUBLEST format. */
2041 /* XXX - This code should really be in libiberty/floatformat.c, however
2042 configuration issues with libiberty made this very difficult to do in the
2045 #include "floatformat.h"
2046 #include <math.h> /* ldexp */
2048 /* The odds that CHAR_BIT will be anything but 8 are low enough that I'm not
2049 going to bother with trying to muck around with whether it is defined in
2050 a system header, what we do if not, etc. */
2051 #define FLOATFORMAT_CHAR_BIT 8
2053 static unsigned long get_field
PARAMS ((unsigned char *,
2054 enum floatformat_byteorders
,
2059 /* Extract a field which starts at START and is LEN bytes long. DATA and
2060 TOTAL_LEN are the thing we are extracting it from, in byteorder ORDER. */
2061 static unsigned long
2062 get_field (data
, order
, total_len
, start
, len
)
2063 unsigned char *data
;
2064 enum floatformat_byteorders order
;
2065 unsigned int total_len
;
2069 unsigned long result
;
2070 unsigned int cur_byte
;
2073 /* Start at the least significant part of the field. */
2074 cur_byte
= (start
+ len
) / FLOATFORMAT_CHAR_BIT
;
2075 if (order
== floatformat_little
|| order
== floatformat_littlebyte_bigword
)
2076 cur_byte
= (total_len
/ FLOATFORMAT_CHAR_BIT
) - cur_byte
- 1;
2078 ((start
+ len
) % FLOATFORMAT_CHAR_BIT
) - FLOATFORMAT_CHAR_BIT
;
2079 result
= *(data
+ cur_byte
) >> (-cur_bitshift
);
2080 cur_bitshift
+= FLOATFORMAT_CHAR_BIT
;
2081 if (order
== floatformat_little
|| order
== floatformat_littlebyte_bigword
)
2086 /* Move towards the most significant part of the field. */
2087 while (cur_bitshift
< len
)
2089 if (len
- cur_bitshift
< FLOATFORMAT_CHAR_BIT
)
2090 /* This is the last byte; zero out the bits which are not part of
2093 (*(data
+ cur_byte
) & ((1 << (len
- cur_bitshift
)) - 1))
2096 result
|= *(data
+ cur_byte
) << cur_bitshift
;
2097 cur_bitshift
+= FLOATFORMAT_CHAR_BIT
;
2098 if (order
== floatformat_little
|| order
== floatformat_littlebyte_bigword
)
2106 /* Convert from FMT to a DOUBLEST.
2107 FROM is the address of the extended float.
2108 Store the DOUBLEST in *TO. */
2111 floatformat_to_doublest (fmt
, from
, to
)
2112 const struct floatformat
*fmt
;
2116 unsigned char *ufrom
= (unsigned char *)from
;
2120 unsigned int mant_bits
, mant_off
;
2122 int special_exponent
; /* It's a NaN, denorm or zero */
2124 /* If the mantissa bits are not contiguous from one end of the
2125 mantissa to the other, we need to make a private copy of the
2126 source bytes that is in the right order since the unpacking
2127 algorithm assumes that the bits are contiguous.
2129 Swap the bytes individually rather than accessing them through
2130 "long *" since we have no guarantee that they start on a long
2131 alignment, and also sizeof(long) for the host could be different
2132 than sizeof(long) for the target. FIXME: Assumes sizeof(long)
2133 for the target is 4. */
2135 if (fmt
-> byteorder
== floatformat_littlebyte_bigword
)
2137 static unsigned char *newfrom
;
2138 unsigned char *swapin
, *swapout
;
2141 longswaps
= fmt
-> totalsize
/ FLOATFORMAT_CHAR_BIT
;
2144 if (newfrom
== NULL
)
2146 newfrom
= xmalloc (fmt
-> totalsize
);
2151 while (longswaps
-- > 0)
2153 /* This is ugly, but efficient */
2154 *swapout
++ = swapin
[4];
2155 *swapout
++ = swapin
[5];
2156 *swapout
++ = swapin
[6];
2157 *swapout
++ = swapin
[7];
2158 *swapout
++ = swapin
[0];
2159 *swapout
++ = swapin
[1];
2160 *swapout
++ = swapin
[2];
2161 *swapout
++ = swapin
[3];
2166 exponent
= get_field (ufrom
, fmt
->byteorder
, fmt
->totalsize
,
2167 fmt
->exp_start
, fmt
->exp_len
);
2168 /* Note that if exponent indicates a NaN, we can't really do anything useful
2169 (not knowing if the host has NaN's, or how to build one). So it will
2170 end up as an infinity or something close; that is OK. */
2172 mant_bits_left
= fmt
->man_len
;
2173 mant_off
= fmt
->man_start
;
2176 special_exponent
= exponent
== 0 || exponent
== fmt
->exp_nan
;
2178 /* Don't bias zero's, denorms or NaNs. */
2179 if (!special_exponent
)
2180 exponent
-= fmt
->exp_bias
;
2182 /* Build the result algebraically. Might go infinite, underflow, etc;
2185 /* If this format uses a hidden bit, explicitly add it in now. Otherwise,
2186 increment the exponent by one to account for the integer bit. */
2188 if (!special_exponent
)
2189 if (fmt
->intbit
== floatformat_intbit_no
)
2190 dto
= ldexp (1.0, exponent
);
2194 while (mant_bits_left
> 0)
2196 mant_bits
= min (mant_bits_left
, 32);
2198 mant
= get_field (ufrom
, fmt
->byteorder
, fmt
->totalsize
,
2199 mant_off
, mant_bits
);
2201 dto
+= ldexp ((double)mant
, exponent
- mant_bits
);
2202 exponent
-= mant_bits
;
2203 mant_off
+= mant_bits
;
2204 mant_bits_left
-= mant_bits
;
2207 /* Negate it if negative. */
2208 if (get_field (ufrom
, fmt
->byteorder
, fmt
->totalsize
, fmt
->sign_start
, 1))
2213 static void put_field
PARAMS ((unsigned char *, enum floatformat_byteorders
,
2219 /* Set a field which starts at START and is LEN bytes long. DATA and
2220 TOTAL_LEN are the thing we are extracting it from, in byteorder ORDER. */
2222 put_field (data
, order
, total_len
, start
, len
, stuff_to_put
)
2223 unsigned char *data
;
2224 enum floatformat_byteorders order
;
2225 unsigned int total_len
;
2228 unsigned long stuff_to_put
;
2230 unsigned int cur_byte
;
2233 /* Start at the least significant part of the field. */
2234 cur_byte
= (start
+ len
) / FLOATFORMAT_CHAR_BIT
;
2235 if (order
== floatformat_little
|| order
== floatformat_littlebyte_bigword
)
2236 cur_byte
= (total_len
/ FLOATFORMAT_CHAR_BIT
) - cur_byte
- 1;
2238 ((start
+ len
) % FLOATFORMAT_CHAR_BIT
) - FLOATFORMAT_CHAR_BIT
;
2239 *(data
+ cur_byte
) &=
2240 ~(((1 << ((start
+ len
) % FLOATFORMAT_CHAR_BIT
)) - 1) << (-cur_bitshift
));
2241 *(data
+ cur_byte
) |=
2242 (stuff_to_put
& ((1 << FLOATFORMAT_CHAR_BIT
) - 1)) << (-cur_bitshift
);
2243 cur_bitshift
+= FLOATFORMAT_CHAR_BIT
;
2244 if (order
== floatformat_little
|| order
== floatformat_littlebyte_bigword
)
2249 /* Move towards the most significant part of the field. */
2250 while (cur_bitshift
< len
)
2252 if (len
- cur_bitshift
< FLOATFORMAT_CHAR_BIT
)
2254 /* This is the last byte. */
2255 *(data
+ cur_byte
) &=
2256 ~((1 << (len
- cur_bitshift
)) - 1);
2257 *(data
+ cur_byte
) |= (stuff_to_put
>> cur_bitshift
);
2260 *(data
+ cur_byte
) = ((stuff_to_put
>> cur_bitshift
)
2261 & ((1 << FLOATFORMAT_CHAR_BIT
) - 1));
2262 cur_bitshift
+= FLOATFORMAT_CHAR_BIT
;
2263 if (order
== floatformat_little
|| order
== floatformat_littlebyte_bigword
)
2270 #ifdef HAVE_LONG_DOUBLE
2271 /* Return the fractional part of VALUE, and put the exponent of VALUE in *EPTR.
2272 The range of the returned value is >= 0.5 and < 1.0. This is equivalent to
2273 frexp, but operates on the long double data type. */
2275 static long double ldfrexp
PARAMS ((long double value
, int *eptr
));
2278 ldfrexp (value
, eptr
)
2285 /* Unfortunately, there are no portable functions for extracting the exponent
2286 of a long double, so we have to do it iteratively by multiplying or dividing
2287 by two until the fraction is between 0.5 and 1.0. */
2295 if (value
>= tmp
) /* Value >= 1.0 */
2296 while (value
>= tmp
)
2301 else if (value
!= 0.0l) /* Value < 1.0 and > 0.0 */
2315 #endif /* HAVE_LONG_DOUBLE */
2318 /* The converse: convert the DOUBLEST *FROM to an extended float
2319 and store where TO points. Neither FROM nor TO have any alignment
2323 floatformat_from_doublest (fmt
, from
, to
)
2324 CONST
struct floatformat
*fmt
;
2331 unsigned int mant_bits
, mant_off
;
2333 unsigned char *uto
= (unsigned char *)to
;
2335 memcpy (&dfrom
, from
, sizeof (dfrom
));
2336 memset (uto
, 0, fmt
->totalsize
/ FLOATFORMAT_CHAR_BIT
);
2338 return; /* Result is zero */
2339 if (dfrom
!= dfrom
) /* Result is NaN */
2342 put_field (uto
, fmt
->byteorder
, fmt
->totalsize
, fmt
->exp_start
,
2343 fmt
->exp_len
, fmt
->exp_nan
);
2344 /* Be sure it's not infinity, but NaN value is irrel */
2345 put_field (uto
, fmt
->byteorder
, fmt
->totalsize
, fmt
->man_start
,
2350 /* If negative, set the sign bit. */
2353 put_field (uto
, fmt
->byteorder
, fmt
->totalsize
, fmt
->sign_start
, 1, 1);
2357 if (dfrom
+ dfrom
== dfrom
&& dfrom
!= 0.0) /* Result is Infinity */
2359 /* Infinity exponent is same as NaN's. */
2360 put_field (uto
, fmt
->byteorder
, fmt
->totalsize
, fmt
->exp_start
,
2361 fmt
->exp_len
, fmt
->exp_nan
);
2362 /* Infinity mantissa is all zeroes. */
2363 put_field (uto
, fmt
->byteorder
, fmt
->totalsize
, fmt
->man_start
,
2368 #ifdef HAVE_LONG_DOUBLE
2369 mant
= ldfrexp (dfrom
, &exponent
);
2371 mant
= frexp (dfrom
, &exponent
);
2374 put_field (uto
, fmt
->byteorder
, fmt
->totalsize
, fmt
->exp_start
, fmt
->exp_len
,
2375 exponent
+ fmt
->exp_bias
- 1);
2377 mant_bits_left
= fmt
->man_len
;
2378 mant_off
= fmt
->man_start
;
2379 while (mant_bits_left
> 0)
2381 unsigned long mant_long
;
2382 mant_bits
= mant_bits_left
< 32 ? mant_bits_left
: 32;
2384 mant
*= 4294967296.0;
2385 mant_long
= (unsigned long)mant
;
2388 /* If the integer bit is implicit, then we need to discard it.
2389 If we are discarding a zero, we should be (but are not) creating
2390 a denormalized number which means adjusting the exponent
2392 if (mant_bits_left
== fmt
->man_len
2393 && fmt
->intbit
== floatformat_intbit_no
)
2401 /* The bits we want are in the most significant MANT_BITS bits of
2402 mant_long. Move them to the least significant. */
2403 mant_long
>>= 32 - mant_bits
;
2406 put_field (uto
, fmt
->byteorder
, fmt
->totalsize
,
2407 mant_off
, mant_bits
, mant_long
);
2408 mant_off
+= mant_bits
;
2409 mant_bits_left
-= mant_bits
;
2411 if (fmt
-> byteorder
== floatformat_littlebyte_bigword
)
2414 unsigned char *swaplow
= uto
;
2415 unsigned char *swaphigh
= uto
+ 4;
2418 for (count
= 0; count
< 4; count
++)
2421 *swaplow
++ = *swaphigh
;
2427 /* temporary storage using circular buffer */
2433 static char buf
[NUMCELLS
][CELLSIZE
];
2435 if (++cell
>=NUMCELLS
) cell
=0;
2439 /* print routines to handle variable size regs, etc.
2441 FIXME: Note that t_addr is a bfd_vma, which is currently either an
2442 unsigned long or unsigned long long, determined at configure time.
2443 If t_addr is an unsigned long long and sizeof (unsigned long long)
2444 is greater than sizeof (unsigned long), then I believe this code will
2445 probably lose, at least for little endian machines. I believe that
2446 it would also be better to eliminate the switch on the absolute size
2447 of t_addr and replace it with a sequence of if statements that compare
2448 sizeof t_addr with sizeof the various types and do the right thing,
2449 which includes knowing whether or not the host supports long long.
2454 static int thirty_two
= 32; /* eliminate warning from compiler on 32-bit systems */
2460 char *paddr_str
=get_cell();
2461 switch (sizeof(t_addr
))
2464 sprintf (paddr_str
, "%08lx%08lx",
2465 (unsigned long) (addr
>> thirty_two
), (unsigned long) (addr
& 0xffffffff));
2468 sprintf (paddr_str
, "%08lx", (unsigned long) addr
);
2471 sprintf (paddr_str
, "%04x", (unsigned short) (addr
& 0xffff));
2474 sprintf (paddr_str
, "%lx", (unsigned long) addr
);
2483 char *preg_str
=get_cell();
2484 switch (sizeof(t_reg
))
2487 sprintf (preg_str
, "%08lx%08lx",
2488 (unsigned long) (reg
>> thirty_two
), (unsigned long) (reg
& 0xffffffff));
2491 sprintf (preg_str
, "%08lx", (unsigned long) reg
);
2494 sprintf (preg_str
, "%04x", (unsigned short) (reg
& 0xffff));
2497 sprintf (preg_str
, "%lx", (unsigned long) reg
);
2506 char *paddr_str
=get_cell();
2507 switch (sizeof(t_addr
))
2511 unsigned long high
= (unsigned long) (addr
>> thirty_two
);
2513 sprintf (paddr_str
, "%lx", (unsigned long) (addr
& 0xffffffff));
2515 sprintf (paddr_str
, "%lx%08lx",
2516 high
, (unsigned long) (addr
& 0xffffffff));
2520 sprintf (paddr_str
, "%lx", (unsigned long) addr
);
2523 sprintf (paddr_str
, "%x", (unsigned short) (addr
& 0xffff));
2526 sprintf (paddr_str
,"%lx", (unsigned long) addr
);
2535 char *preg_str
=get_cell();
2536 switch (sizeof(t_reg
))
2540 unsigned long high
= (unsigned long) (reg
>> thirty_two
);
2542 sprintf (preg_str
, "%lx", (unsigned long) (reg
& 0xffffffff));
2544 sprintf (preg_str
, "%lx%08lx",
2545 high
, (unsigned long) (reg
& 0xffffffff));
2549 sprintf (preg_str
, "%lx", (unsigned long) reg
);
2552 sprintf (preg_str
, "%x", (unsigned short) (reg
& 0xffff));
2555 sprintf (preg_str
, "%lx", (unsigned long) reg
);