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 /* Prototypes for local functions */
56 static void vfprintf_maybe_filtered
PARAMS ((GDB_FILE
*, const char *,
59 static void fputs_maybe_filtered
PARAMS ((const char *, GDB_FILE
*, int));
61 #if defined (USE_MMALLOC) && !defined (NO_MMCHECK)
62 static void malloc_botch
PARAMS ((void));
66 fatal_dump_core
PARAMS((char *, ...));
69 prompt_for_continue
PARAMS ((void));
72 set_width_command
PARAMS ((char *, int, struct cmd_list_element
*));
75 set_width
PARAMS ((void));
77 /* If this definition isn't overridden by the header files, assume
78 that isatty and fileno exist on this system. */
80 #define ISATTY(FP) (isatty (fileno (FP)))
83 #ifndef GDB_FILE_ISATTY
84 #define GDB_FILE_ISATTY(GDB_FILE_PTR) (gdb_file_isatty(GDB_FILE_PTR))
87 /* Chain of cleanup actions established with make_cleanup,
88 to be executed if an error happens. */
90 static struct cleanup
*cleanup_chain
; /* cleaned up after a failed command */
91 static struct cleanup
*final_cleanup_chain
; /* cleaned up when gdb exits */
92 static struct cleanup
*run_cleanup_chain
; /* cleaned up on each 'run' */
94 /* Nonzero if we have job control. */
98 /* Nonzero means a quit has been requested. */
102 /* Nonzero means quit immediately if Control-C is typed now, rather
103 than waiting until QUIT is executed. Be careful in setting this;
104 code which executes with immediate_quit set has to be very careful
105 about being able to deal with being interrupted at any time. It is
106 almost always better to use QUIT; the only exception I can think of
107 is being able to quit out of a system call (using EINTR loses if
108 the SIGINT happens between the previous QUIT and the system call).
109 To immediately quit in the case in which a SIGINT happens between
110 the previous QUIT and setting immediate_quit (desirable anytime we
111 expect to block), call QUIT after setting immediate_quit. */
115 /* Nonzero means that encoded C++ names should be printed out in their
116 C++ form rather than raw. */
120 /* Nonzero means that encoded C++ names should be printed out in their
121 C++ form even in assembler language displays. If this is set, but
122 DEMANGLE is zero, names are printed raw, i.e. DEMANGLE controls. */
124 int asm_demangle
= 0;
126 /* Nonzero means that strings with character values >0x7F should be printed
127 as octal escapes. Zero means just print the value (e.g. it's an
128 international character, and the terminal or window can cope.) */
130 int sevenbit_strings
= 0;
132 /* String to be printed before error messages, if any. */
134 char *error_pre_print
;
136 /* String to be printed before quit messages, if any. */
138 char *quit_pre_print
;
140 /* String to be printed before warning messages, if any. */
142 char *warning_pre_print
= "\nwarning: ";
144 int pagination_enabled
= 1;
147 /* Add a new cleanup to the cleanup_chain,
148 and return the previous chain pointer
149 to be passed later to do_cleanups or discard_cleanups.
150 Args are FUNCTION to clean up with, and ARG to pass to it. */
153 make_cleanup (function
, arg
)
154 void (*function
) PARAMS ((PTR
));
157 return make_my_cleanup (&cleanup_chain
, function
, arg
);
161 make_final_cleanup (function
, arg
)
162 void (*function
) PARAMS ((PTR
));
165 return make_my_cleanup (&final_cleanup_chain
, function
, arg
);
168 make_run_cleanup (function
, arg
)
169 void (*function
) PARAMS ((PTR
));
172 return make_my_cleanup (&run_cleanup_chain
, function
, arg
);
175 make_my_cleanup (pmy_chain
, function
, arg
)
176 struct cleanup
**pmy_chain
;
177 void (*function
) PARAMS ((PTR
));
180 register struct cleanup
*new
181 = (struct cleanup
*) xmalloc (sizeof (struct cleanup
));
182 register struct cleanup
*old_chain
= *pmy_chain
;
184 new->next
= *pmy_chain
;
185 new->function
= function
;
192 /* Discard cleanups and do the actions they describe
193 until we get back to the point OLD_CHAIN in the cleanup_chain. */
196 do_cleanups (old_chain
)
197 register struct cleanup
*old_chain
;
199 do_my_cleanups (&cleanup_chain
, old_chain
);
203 do_final_cleanups (old_chain
)
204 register struct cleanup
*old_chain
;
206 do_my_cleanups (&final_cleanup_chain
, old_chain
);
210 do_run_cleanups (old_chain
)
211 register struct cleanup
*old_chain
;
213 do_my_cleanups (&run_cleanup_chain
, old_chain
);
217 do_my_cleanups (pmy_chain
, old_chain
)
218 register struct cleanup
**pmy_chain
;
219 register struct cleanup
*old_chain
;
221 register struct cleanup
*ptr
;
222 while ((ptr
= *pmy_chain
) != old_chain
)
224 *pmy_chain
= ptr
->next
; /* Do this first incase recursion */
225 (*ptr
->function
) (ptr
->arg
);
230 /* Discard cleanups, not doing the actions they describe,
231 until we get back to the point OLD_CHAIN in the cleanup_chain. */
234 discard_cleanups (old_chain
)
235 register struct cleanup
*old_chain
;
237 discard_my_cleanups (&cleanup_chain
, old_chain
);
241 discard_final_cleanups (old_chain
)
242 register struct cleanup
*old_chain
;
244 discard_my_cleanups (&final_cleanup_chain
, old_chain
);
248 discard_my_cleanups (pmy_chain
, old_chain
)
249 register struct cleanup
**pmy_chain
;
250 register struct cleanup
*old_chain
;
252 register struct cleanup
*ptr
;
253 while ((ptr
= *pmy_chain
) != old_chain
)
255 *pmy_chain
= ptr
->next
;
260 /* Set the cleanup_chain to 0, and return the old cleanup chain. */
264 return save_my_cleanups (&cleanup_chain
);
268 save_final_cleanups ()
270 return save_my_cleanups (&final_cleanup_chain
);
274 save_my_cleanups (pmy_chain
)
275 struct cleanup
**pmy_chain
;
277 struct cleanup
*old_chain
= *pmy_chain
;
283 /* Restore the cleanup chain from a previously saved chain. */
285 restore_cleanups (chain
)
286 struct cleanup
*chain
;
288 restore_my_cleanups (&cleanup_chain
, chain
);
292 restore_final_cleanups (chain
)
293 struct cleanup
*chain
;
295 restore_my_cleanups (&final_cleanup_chain
, chain
);
299 restore_my_cleanups (pmy_chain
, chain
)
300 struct cleanup
**pmy_chain
;
301 struct cleanup
*chain
;
306 /* This function is useful for cleanups.
310 old_chain = make_cleanup (free_current_contents, &foo);
312 to arrange to free the object thus allocated. */
315 free_current_contents (location
)
321 /* Provide a known function that does nothing, to use as a base for
322 for a possibly long chain of cleanups. This is useful where we
323 use the cleanup chain for handling normal cleanups as well as dealing
324 with cleanups that need to be done as a result of a call to error().
325 In such cases, we may not be certain where the first cleanup is, unless
326 we have a do-nothing one to always use as the base. */
336 /* Print a warning message. Way to use this is to call warning_begin,
337 output the warning message (use unfiltered output to gdb_stderr),
338 ending in a newline. There is not currently a warning_end that you
339 call afterwards, but such a thing might be added if it is useful
340 for a GUI to separate warning messages from other output.
342 FIXME: Why do warnings use unfiltered output and errors filtered?
343 Is this anything other than a historical accident? */
348 target_terminal_ours ();
349 wrap_here(""); /* Force out any buffered output */
350 gdb_flush (gdb_stdout
);
351 if (warning_pre_print
)
352 fprintf_unfiltered (gdb_stderr
, warning_pre_print
);
355 /* Print a warning message.
356 The first argument STRING is the warning message, used as a fprintf string,
357 and the remaining args are passed as arguments to it.
358 The primary difference between warnings and errors is that a warning
359 does not force the return to command level. */
363 #ifdef ANSI_PROTOTYPES
364 warning (const char *string
, ...)
371 #ifdef ANSI_PROTOTYPES
372 va_start (args
, string
);
377 string
= va_arg (args
, char *);
380 (*warning_hook
) (string
, args
);
384 vfprintf_unfiltered (gdb_stderr
, string
, args
);
385 fprintf_unfiltered (gdb_stderr
, "\n");
390 /* Start the printing of an error message. Way to use this is to call
391 this, output the error message (use filtered output to gdb_stderr
392 (FIXME: Some callers, like memory_error, use gdb_stdout)), ending
393 in a newline, and then call return_to_top_level (RETURN_ERROR).
394 error() provides a convenient way to do this for the special case
395 that the error message can be formatted with a single printf call,
396 but this is more general. */
400 target_terminal_ours ();
401 wrap_here (""); /* Force out any buffered output */
402 gdb_flush (gdb_stdout
);
404 annotate_error_begin ();
407 fprintf_filtered (gdb_stderr
, error_pre_print
);
410 /* Print an error message and return to command level.
411 The first argument STRING is the error message, used as a fprintf string,
412 and the remaining args are passed as arguments to it. */
416 #ifdef ANSI_PROTOTYPES
417 error (const char *string
, ...)
424 #ifdef ANSI_PROTOTYPES
425 va_start (args
, string
);
434 #ifdef ANSI_PROTOTYPES
435 vfprintf_filtered (gdb_stderr
, string
, args
);
440 string1
= va_arg (args
, char *);
441 vfprintf_filtered (gdb_stderr
, string1
, args
);
444 fprintf_filtered (gdb_stderr
, "\n");
446 return_to_top_level (RETURN_ERROR
);
451 /* Print an error message and exit reporting failure.
452 This is for a error that we cannot continue from.
453 The arguments are printed a la printf.
455 This function cannot be declared volatile (NORETURN) in an
456 ANSI environment because exit() is not declared volatile. */
460 #ifdef ANSI_PROTOTYPES
461 fatal (char *string
, ...)
468 #ifdef ANSI_PROTOTYPES
469 va_start (args
, string
);
473 string
= va_arg (args
, char *);
475 fprintf_unfiltered (gdb_stderr
, "\ngdb: ");
476 vfprintf_unfiltered (gdb_stderr
, string
, args
);
477 fprintf_unfiltered (gdb_stderr
, "\n");
482 /* Print an error message and exit, dumping core.
483 The arguments are printed a la printf (). */
487 #ifdef ANSI_PROTOTYPES
488 fatal_dump_core (char *string
, ...)
490 fatal_dump_core (va_alist
)
495 #ifdef ANSI_PROTOTYPES
496 va_start (args
, string
);
501 string
= va_arg (args
, char *);
503 /* "internal error" is always correct, since GDB should never dump
504 core, no matter what the input. */
505 fprintf_unfiltered (gdb_stderr
, "\ngdb internal error: ");
506 vfprintf_unfiltered (gdb_stderr
, string
, args
);
507 fprintf_unfiltered (gdb_stderr
, "\n");
510 signal (SIGQUIT
, SIG_DFL
);
511 kill (getpid (), SIGQUIT
);
512 /* We should never get here, but just in case... */
516 /* The strerror() function can return NULL for errno values that are
517 out of range. Provide a "safe" version that always returns a
521 safe_strerror (errnum
)
527 if ((msg
= strerror (errnum
)) == NULL
)
529 sprintf (buf
, "(undocumented errno %d)", errnum
);
535 /* The strsignal() function can return NULL for signal values that are
536 out of range. Provide a "safe" version that always returns a
540 safe_strsignal (signo
)
546 if ((msg
= strsignal (signo
)) == NULL
)
548 sprintf (buf
, "(undocumented signal %d)", signo
);
555 /* Print the system error message for errno, and also mention STRING
556 as the file name for which the error was encountered.
557 Then return to command level. */
560 perror_with_name (string
)
566 err
= safe_strerror (errno
);
567 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
568 strcpy (combined
, string
);
569 strcat (combined
, ": ");
570 strcat (combined
, err
);
572 /* I understand setting these is a matter of taste. Still, some people
573 may clear errno but not know about bfd_error. Doing this here is not
575 bfd_set_error (bfd_error_no_error
);
578 error ("%s.", combined
);
581 /* Print the system error message for ERRCODE, and also mention STRING
582 as the file name for which the error was encountered. */
585 print_sys_errmsg (string
, errcode
)
592 err
= safe_strerror (errcode
);
593 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
594 strcpy (combined
, string
);
595 strcat (combined
, ": ");
596 strcat (combined
, err
);
598 /* We want anything which was printed on stdout to come out first, before
600 gdb_flush (gdb_stdout
);
601 fprintf_unfiltered (gdb_stderr
, "%s.\n", combined
);
604 /* Control C eventually causes this to be called, at a convenient time. */
609 serial_t gdb_stdout_serial
= serial_fdopen (1);
611 target_terminal_ours ();
613 /* We want all output to appear now, before we print "Quit". We
614 have 3 levels of buffering we have to flush (it's possible that
615 some of these should be changed to flush the lower-level ones
618 /* 1. The _filtered buffer. */
619 wrap_here ((char *)0);
621 /* 2. The stdio buffer. */
622 gdb_flush (gdb_stdout
);
623 gdb_flush (gdb_stderr
);
625 /* 3. The system-level buffer. */
626 SERIAL_DRAIN_OUTPUT (gdb_stdout_serial
);
627 SERIAL_UN_FDOPEN (gdb_stdout_serial
);
629 annotate_error_begin ();
631 /* Don't use *_filtered; we don't want to prompt the user to continue. */
633 fprintf_unfiltered (gdb_stderr
, quit_pre_print
);
636 /* If there is no terminal switching for this target, then we can't
637 possibly get screwed by the lack of job control. */
638 || current_target
.to_terminal_ours
== NULL
)
639 fprintf_unfiltered (gdb_stderr
, "Quit\n");
641 fprintf_unfiltered (gdb_stderr
,
642 "Quit (expect signal SIGINT when the program is resumed)\n");
643 return_to_top_level (RETURN_QUIT
);
647 #if defined(__GO32__)
649 /* In the absence of signals, poll keyboard for a quit.
650 Called from #define QUIT pollquit() in xm-go32.h. */
665 /* We just ignore it */
666 /* FIXME!! Don't think this actually works! */
667 fprintf_unfiltered (gdb_stderr
, "CTRL-A to quit, CTRL-B to quit harder\n");
672 #elif defined(_MSC_VER) /* should test for wingdb instead? */
675 * Windows translates all keyboard and mouse events
676 * into a message which is appended to the message
677 * queue for the process.
682 int k
= win32pollquit();
689 #else /* !defined(__GO32__) && !defined(_MSC_VER) */
693 /* Done by signals */
696 #endif /* !defined(__GO32__) && !defined(_MSC_VER) */
702 if (quit_flag
|| immediate_quit
)
706 /* Control C comes here */
713 /* Restore the signal handler. Harmless with BSD-style signals, needed
714 for System V-style signals. So just always do it, rather than worrying
715 about USG defines and stuff like that. */
716 signal (signo
, request_quit
);
727 /* Memory management stuff (malloc friends). */
729 /* Make a substitute size_t for non-ANSI compilers. */
731 #ifndef HAVE_STDDEF_H
733 #define size_t unsigned int
737 #if !defined (USE_MMALLOC)
744 return malloc (size
);
748 mrealloc (md
, ptr
, size
)
753 if (ptr
== 0) /* Guard against old realloc's */
754 return malloc (size
);
756 return realloc (ptr
, size
);
767 #endif /* USE_MMALLOC */
769 #if !defined (USE_MMALLOC) || defined (NO_MMCHECK)
777 #else /* Have mmalloc and want corruption checking */
782 fatal_dump_core ("Memory corruption");
785 /* Attempt to install hooks in mmalloc/mrealloc/mfree for the heap specified
786 by MD, to detect memory corruption. Note that MD may be NULL to specify
787 the default heap that grows via sbrk.
789 Note that for freshly created regions, we must call mmcheckf prior to any
790 mallocs in the region. Otherwise, any region which was allocated prior to
791 installing the checking hooks, which is later reallocated or freed, will
792 fail the checks! The mmcheck function only allows initial hooks to be
793 installed before the first mmalloc. However, anytime after we have called
794 mmcheck the first time to install the checking hooks, we can call it again
795 to update the function pointer to the memory corruption handler.
797 Returns zero on failure, non-zero on success. */
799 #ifndef MMCHECK_FORCE
800 #define MMCHECK_FORCE 0
807 if (!mmcheckf (md
, malloc_botch
, MMCHECK_FORCE
))
809 /* Don't use warning(), which relies on current_target being set
810 to something other than dummy_target, until after
811 initialize_all_files(). */
814 (gdb_stderr
, "warning: failed to install memory consistency checks; ");
816 (gdb_stderr
, "configuration should define NO_MMCHECK or MMCHECK_FORCE\n");
822 #endif /* Have mmalloc and want corruption checking */
824 /* Called when a memory allocation fails, with the number of bytes of
825 memory requested in SIZE. */
833 fatal ("virtual memory exhausted: can't allocate %ld bytes.", size
);
837 fatal ("virtual memory exhausted.");
841 /* Like mmalloc but get error if no storage available, and protect against
842 the caller wanting to allocate zero bytes. Whether to return NULL for
843 a zero byte request, or translate the request into a request for one
844 byte of zero'd storage, is a religious issue. */
857 else if ((val
= mmalloc (md
, size
)) == NULL
)
864 /* Like mrealloc but get error if no storage available. */
867 xmrealloc (md
, ptr
, size
)
876 val
= mrealloc (md
, ptr
, size
);
880 val
= mmalloc (md
, size
);
889 /* Like malloc but get error if no storage available, and protect against
890 the caller wanting to allocate zero bytes. */
896 return (xmmalloc ((PTR
) NULL
, size
));
899 /* Like mrealloc but get error if no storage available. */
906 return (xmrealloc ((PTR
) NULL
, ptr
, size
));
910 /* My replacement for the read system call.
911 Used like `read' but keeps going if `read' returns too soon. */
914 myread (desc
, addr
, len
)
924 val
= read (desc
, addr
, len
);
935 /* Make a copy of the string at PTR with SIZE characters
936 (and add a null character at the end in the copy).
937 Uses malloc to get the space. Returns the address of the copy. */
940 savestring (ptr
, size
)
944 register char *p
= (char *) xmalloc (size
+ 1);
945 memcpy (p
, ptr
, size
);
951 msavestring (md
, ptr
, size
)
956 register char *p
= (char *) xmmalloc (md
, size
+ 1);
957 memcpy (p
, ptr
, size
);
962 /* The "const" is so it compiles under DGUX (which prototypes strsave
963 in <string.h>. FIXME: This should be named "xstrsave", shouldn't it?
964 Doesn't real strsave return NULL if out of memory? */
969 return savestring (ptr
, strlen (ptr
));
977 return (msavestring (md
, ptr
, strlen (ptr
)));
981 print_spaces (n
, file
)
983 register GDB_FILE
*file
;
985 if (file
->ts_streamtype
== astring
) {
986 gdb_file_adjust_strbuf (n
, file
);
988 strcat(file
->ts_strbuf
, ' ');
991 fputc (' ', file
->ts_filestream
);
995 /* Print a host address. */
998 gdb_print_address (addr
, stream
)
1003 /* We could use the %p conversion specifier to fprintf if we had any
1004 way of knowing whether this host supports it. But the following
1005 should work on the Alpha and on 32 bit machines. */
1007 fprintf_filtered (stream
, "0x%lx", (unsigned long)addr
);
1010 /* Ask user a y-or-n question and return 1 iff answer is yes.
1011 Takes three args which are given to printf to print the question.
1012 The first, a control string, should end in "? ".
1013 It should not say how to answer, because we do that. */
1017 #ifdef ANSI_PROTOTYPES
1018 query (char *ctlstr
, ...)
1025 register int answer
;
1029 #ifdef ANSI_PROTOTYPES
1030 va_start (args
, ctlstr
);
1034 ctlstr
= va_arg (args
, char *);
1039 return query_hook (ctlstr
, args
);
1042 /* Automatically answer "yes" if input is not from a terminal. */
1043 if (!input_from_terminal_p ())
1046 /* FIXME Automatically answer "yes" if called from MacGDB. */
1053 wrap_here (""); /* Flush any buffered output */
1054 gdb_flush (gdb_stdout
);
1056 if (annotation_level
> 1)
1057 printf_filtered ("\n\032\032pre-query\n");
1059 vfprintf_filtered (gdb_stdout
, ctlstr
, args
);
1060 printf_filtered ("(y or n) ");
1062 if (annotation_level
> 1)
1063 printf_filtered ("\n\032\032query\n");
1066 /* If not in MacGDB, move to a new line so the entered line doesn't
1067 have a prompt on the front of it. */
1069 fputs_unfiltered ("\n", gdb_stdout
);
1073 gdb_flush (gdb_stdout
);
1076 if (!tui_version
|| cmdWin
== tuiWinWithFocus())
1078 answer
= fgetc (stdin
);
1082 answer
= (unsigned char)tuiBufferGetc();
1085 clearerr (stdin
); /* in case of C-d */
1086 if (answer
== EOF
) /* C-d */
1091 /* Eat rest of input line, to EOF or newline */
1092 if ((answer
!= '\n') || (tui_version
&& answer
!= '\r'))
1096 if (!tui_version
|| cmdWin
== tuiWinWithFocus())
1098 ans2
= fgetc (stdin
);
1102 ans2
= (unsigned char)tuiBufferGetc();
1106 while (ans2
!= EOF
&& ans2
!= '\n' && ans2
!= '\r');
1107 TUIDO(((TuiOpaqueFuncPtr
)tui_vStartNewLines
, 1));
1121 printf_filtered ("Please answer y or n.\n");
1124 if (annotation_level
> 1)
1125 printf_filtered ("\n\032\032post-query\n");
1130 /* Parse a C escape sequence. STRING_PTR points to a variable
1131 containing a pointer to the string to parse. That pointer
1132 should point to the character after the \. That pointer
1133 is updated past the characters we use. The value of the
1134 escape sequence is returned.
1136 A negative value means the sequence \ newline was seen,
1137 which is supposed to be equivalent to nothing at all.
1139 If \ is followed by a null character, we return a negative
1140 value and leave the string pointer pointing at the null character.
1142 If \ is followed by 000, we return 0 and leave the string pointer
1143 after the zeros. A value of 0 does not mean end of string. */
1146 parse_escape (string_ptr
)
1149 register int c
= *(*string_ptr
)++;
1153 return 007; /* Bell (alert) char */
1156 case 'e': /* Escape character */
1174 c
= *(*string_ptr
)++;
1176 c
= parse_escape (string_ptr
);
1179 return (c
& 0200) | (c
& 037);
1190 register int i
= c
- '0';
1191 register int count
= 0;
1194 if ((c
= *(*string_ptr
)++) >= '0' && c
<= '7')
1212 /* Print the character C on STREAM as part of the contents of a literal
1213 string whose delimiter is QUOTER. Note that this routine should only
1214 be call for printing things which are independent of the language
1215 of the program being debugged. */
1218 gdb_printchar (c
, stream
, quoter
)
1224 c
&= 0xFF; /* Avoid sign bit follies */
1226 if ( c
< 0x20 || /* Low control chars */
1227 (c
>= 0x7F && c
< 0xA0) || /* DEL, High controls */
1228 (sevenbit_strings
&& c
>= 0x80)) { /* high order bit set */
1232 fputs_filtered ("\\n", stream
);
1235 fputs_filtered ("\\b", stream
);
1238 fputs_filtered ("\\t", stream
);
1241 fputs_filtered ("\\f", stream
);
1244 fputs_filtered ("\\r", stream
);
1247 fputs_filtered ("\\e", stream
);
1250 fputs_filtered ("\\a", stream
);
1253 fprintf_filtered (stream
, "\\%.3o", (unsigned int) c
);
1257 if (c
== '\\' || c
== quoter
)
1258 fputs_filtered ("\\", stream
);
1259 fprintf_filtered (stream
, "%c", c
);
1266 static char * hexlate
= "0123456789abcdef" ;
1267 int fmthex(inbuf
,outbuff
,length
,linelength
)
1268 unsigned char * inbuf
;
1269 unsigned char * outbuff
;
1273 unsigned char byte
, nib
;
1278 if (outlength
>= linelength
) break ;
1282 *outbuff
++ = hexlate
[nib
] ;
1284 *outbuff
++ = hexlate
[nib
] ;
1289 *outbuff
= '\0' ; /* null terminate our output line */
1294 /* Number of lines per page or UINT_MAX if paging is disabled. */
1295 static unsigned int lines_per_page
;
1296 /* Number of chars per line or UNIT_MAX is line folding is disabled. */
1297 static unsigned int chars_per_line
;
1298 /* Current count of lines printed on this page, chars on this line. */
1299 static unsigned int lines_printed
, chars_printed
;
1301 /* Buffer and start column of buffered text, for doing smarter word-
1302 wrapping. When someone calls wrap_here(), we start buffering output
1303 that comes through fputs_filtered(). If we see a newline, we just
1304 spit it out and forget about the wrap_here(). If we see another
1305 wrap_here(), we spit it out and remember the newer one. If we see
1306 the end of the line, we spit out a newline, the indent, and then
1307 the buffered output. */
1309 /* Malloc'd buffer with chars_per_line+2 bytes. Contains characters which
1310 are waiting to be output (they have already been counted in chars_printed).
1311 When wrap_buffer[0] is null, the buffer is empty. */
1312 static char *wrap_buffer
;
1314 /* Pointer in wrap_buffer to the next character to fill. */
1315 static char *wrap_pointer
;
1317 /* String to indent by if the wrap occurs. Must not be NULL if wrap_column
1319 static char *wrap_indent
;
1321 /* Column number on the screen where wrap_buffer begins, or 0 if wrapping
1322 is not in effect. */
1323 static int wrap_column
;
1326 /* Inialize the lines and chars per page */
1331 if (tui_version
&& m_winPtrNotNull(cmdWin
))
1333 lines_per_page
= cmdWin
->generic
.height
;
1334 chars_per_line
= cmdWin
->generic
.width
;
1339 /* These defaults will be used if we are unable to get the correct
1340 values from termcap. */
1341 #if defined(__GO32__)
1342 lines_per_page
= ScreenRows();
1343 chars_per_line
= ScreenCols();
1345 lines_per_page
= 24;
1346 chars_per_line
= 80;
1348 #if !defined (MPW) && !defined (_WIN32)
1349 /* No termcap under MPW, although might be cool to do something
1350 by looking at worksheet or console window sizes. */
1351 /* Initialize the screen height and width from termcap. */
1353 char *termtype
= getenv ("TERM");
1355 /* Positive means success, nonpositive means failure. */
1358 /* 2048 is large enough for all known terminals, according to the
1359 GNU termcap manual. */
1360 char term_buffer
[2048];
1364 status
= tgetent (term_buffer
, termtype
);
1369 val
= tgetnum ("li");
1371 lines_per_page
= val
;
1373 /* The number of lines per page is not mentioned
1374 in the terminal description. This probably means
1375 that paging is not useful (e.g. emacs shell window),
1376 so disable paging. */
1377 lines_per_page
= UINT_MAX
;
1379 val
= tgetnum ("co");
1381 chars_per_line
= val
;
1387 #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER)
1389 /* If there is a better way to determine the window size, use it. */
1390 SIGWINCH_HANDLER (SIGWINCH
);
1393 /* If the output is not a terminal, don't paginate it. */
1394 if (!GDB_FILE_ISATTY (gdb_stdout
))
1395 lines_per_page
= UINT_MAX
;
1396 } /* the command_line_version */
1403 if (chars_per_line
== 0)
1408 wrap_buffer
= (char *) xmalloc (chars_per_line
+ 2);
1409 wrap_buffer
[0] = '\0';
1412 wrap_buffer
= (char *) xrealloc (wrap_buffer
, chars_per_line
+ 2);
1413 wrap_pointer
= wrap_buffer
; /* Start it at the beginning */
1418 set_width_command (args
, from_tty
, c
)
1421 struct cmd_list_element
*c
;
1426 /* Wait, so the user can read what's on the screen. Prompt the user
1427 to continue by pressing RETURN. */
1430 prompt_for_continue ()
1433 char cont_prompt
[120];
1435 if (annotation_level
> 1)
1436 printf_unfiltered ("\n\032\032pre-prompt-for-continue\n");
1438 strcpy (cont_prompt
,
1439 "---Type <return> to continue, or q <return> to quit---");
1440 if (annotation_level
> 1)
1441 strcat (cont_prompt
, "\n\032\032prompt-for-continue\n");
1443 /* We must do this *before* we call gdb_readline, else it will eventually
1444 call us -- thinking that we're trying to print beyond the end of the
1446 reinitialize_more_filter ();
1449 /* On a real operating system, the user can quit with SIGINT.
1452 'q' is provided on all systems so users don't have to change habits
1453 from system to system, and because telling them what to do in
1454 the prompt is more user-friendly than expecting them to think of
1456 /* Call readline, not gdb_readline, because GO32 readline handles control-C
1457 whereas control-C to gdb_readline will cause the user to get dumped
1459 ignore
= readline (cont_prompt
);
1461 if (annotation_level
> 1)
1462 printf_unfiltered ("\n\032\032post-prompt-for-continue\n");
1467 while (*p
== ' ' || *p
== '\t')
1470 request_quit (SIGINT
);
1475 /* Now we have to do this again, so that GDB will know that it doesn't
1476 need to save the ---Type <return>--- line at the top of the screen. */
1477 reinitialize_more_filter ();
1479 dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */
1482 /* Reinitialize filter; ie. tell it to reset to original values. */
1485 reinitialize_more_filter ()
1491 /* Indicate that if the next sequence of characters overflows the line,
1492 a newline should be inserted here rather than when it hits the end.
1493 If INDENT is non-null, it is a string to be printed to indent the
1494 wrapped part on the next line. INDENT must remain accessible until
1495 the next call to wrap_here() or until a newline is printed through
1498 If the line is already overfull, we immediately print a newline and
1499 the indentation, and disable further wrapping.
1501 If we don't know the width of lines, but we know the page height,
1502 we must not wrap words, but should still keep track of newlines
1503 that were explicitly printed.
1505 INDENT should not contain tabs, as that will mess up the char count
1506 on the next line. FIXME.
1508 This routine is guaranteed to force out any output which has been
1509 squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be
1510 used to force out output from the wrap_buffer. */
1516 /* This should have been allocated, but be paranoid anyway. */
1522 *wrap_pointer
= '\0';
1523 fputs_unfiltered (wrap_buffer
, gdb_stdout
);
1525 wrap_pointer
= wrap_buffer
;
1526 wrap_buffer
[0] = '\0';
1527 if (chars_per_line
== UINT_MAX
) /* No line overflow checking */
1531 else if (chars_printed
>= chars_per_line
)
1533 puts_filtered ("\n");
1535 puts_filtered (indent
);
1540 wrap_column
= chars_printed
;
1544 wrap_indent
= indent
;
1548 /* Ensure that whatever gets printed next, using the filtered output
1549 commands, starts at the beginning of the line. I.E. if there is
1550 any pending output for the current line, flush it and start a new
1551 line. Otherwise do nothing. */
1556 if (chars_printed
> 0)
1558 puts_filtered ("\n");
1563 gdb_file_isatty (stream
)
1567 if (stream
->ts_streamtype
== afile
)
1568 return (isatty(fileno(stream
->ts_filestream
)));
1573 gdb_file_init_astring (n
)
1576 GDB_FILE
*tmpstream
;
1578 tmpstream
= xmalloc (sizeof(GDB_FILE
));
1579 tmpstream
->ts_streamtype
= astring
;
1580 tmpstream
->ts_filestream
= NULL
;
1583 tmpstream
->ts_strbuf
= xmalloc ((n
+ 1)*sizeof(char));
1584 tmpstream
->ts_strbuf
[0] = '\0';
1587 tmpstream
->ts_strbuf
= NULL
;
1588 tmpstream
->ts_buflen
= n
;
1594 gdb_file_deallocate (streamptr
)
1595 GDB_FILE
**streamptr
;
1597 GDB_FILE
*tmpstream
;
1599 tmpstream
= *streamptr
;
1600 if ((tmpstream
->ts_streamtype
== astring
) &&
1601 (tmpstream
->ts_strbuf
!= NULL
))
1603 free (tmpstream
->ts_strbuf
);
1611 gdb_file_get_strbuf (stream
)
1614 return (stream
->ts_strbuf
);
1617 /* adjust the length of the buffer by the amount necessary
1618 to accomodate appending a string of length N to the buffer contents */
1620 gdb_file_adjust_strbuf (n
, stream
)
1626 non_null_chars
= strlen(stream
->ts_strbuf
);
1628 if (n
> (stream
->ts_buflen
- non_null_chars
- 1))
1630 stream
->ts_buflen
= n
+ non_null_chars
+ 1;
1631 stream
->ts_strbuf
= xrealloc (stream
->ts_strbuf
, stream
->ts_buflen
);
1636 gdb_fopen (name
, mode
)
1643 gdb_file_size
= sizeof(GDB_FILE
);
1644 tmp
= (GDB_FILE
*) xmalloc (gdb_file_size
);
1645 tmp
->ts_streamtype
= afile
;
1646 tmp
->ts_filestream
= fopen (name
, mode
);
1647 tmp
->ts_strbuf
= NULL
;
1658 && (stream
== gdb_stdout
1659 || stream
== gdb_stderr
))
1661 flush_hook (stream
);
1665 fflush (stream
->ts_filestream
);
1669 gdb_fclose(streamptr
)
1670 GDB_FILE
**streamptr
;
1672 GDB_FILE
*tmpstream
;
1674 tmpstream
= *streamptr
;
1675 fclose (tmpstream
->ts_filestream
);
1676 gdb_file_deallocate (streamptr
);
1679 /* Like fputs but if FILTER is true, pause after every screenful.
1681 Regardless of FILTER can wrap at points other than the final
1682 character of a line.
1684 Unlike fputs, fputs_maybe_filtered does not return a value.
1685 It is OK for LINEBUFFER to be NULL, in which case just don't print
1688 Note that a longjmp to top level may occur in this routine (only if
1689 FILTER is true) (since prompt_for_continue may do so) so this
1690 routine should not be called when cleanups are not in place. */
1693 fputs_maybe_filtered (linebuffer
, stream
, filter
)
1694 const char *linebuffer
;
1698 const char *lineptr
;
1700 if (linebuffer
== 0)
1703 /* Don't do any filtering if it is disabled. */
1704 if (stream
!= gdb_stdout
1705 || (lines_per_page
== UINT_MAX
&& chars_per_line
== UINT_MAX
))
1707 fputs_unfiltered (linebuffer
, stream
);
1711 /* Go through and output each character. Show line extension
1712 when this is necessary; prompt user for new page when this is
1715 lineptr
= linebuffer
;
1718 /* Possible new page. */
1720 (lines_printed
>= lines_per_page
- 1))
1721 prompt_for_continue ();
1723 while (*lineptr
&& *lineptr
!= '\n')
1725 /* Print a single line. */
1726 if (*lineptr
== '\t')
1729 *wrap_pointer
++ = '\t';
1731 fputc_unfiltered ('\t', stream
);
1732 /* Shifting right by 3 produces the number of tab stops
1733 we have already passed, and then adding one and
1734 shifting left 3 advances to the next tab stop. */
1735 chars_printed
= ((chars_printed
>> 3) + 1) << 3;
1741 *wrap_pointer
++ = *lineptr
;
1743 fputc_unfiltered (*lineptr
, stream
);
1748 if (chars_printed
>= chars_per_line
)
1750 unsigned int save_chars
= chars_printed
;
1754 /* If we aren't actually wrapping, don't output newline --
1755 if chars_per_line is right, we probably just overflowed
1756 anyway; if it's wrong, let us keep going. */
1758 fputc_unfiltered ('\n', stream
);
1760 /* Possible new page. */
1761 if (lines_printed
>= lines_per_page
- 1)
1762 prompt_for_continue ();
1764 /* Now output indentation and wrapped string */
1767 fputs_unfiltered (wrap_indent
, stream
);
1768 *wrap_pointer
= '\0'; /* Null-terminate saved stuff */
1769 fputs_unfiltered (wrap_buffer
, stream
); /* and eject it */
1770 /* FIXME, this strlen is what prevents wrap_indent from
1771 containing tabs. However, if we recurse to print it
1772 and count its chars, we risk trouble if wrap_indent is
1773 longer than (the user settable) chars_per_line.
1774 Note also that this can set chars_printed > chars_per_line
1775 if we are printing a long string. */
1776 chars_printed
= strlen (wrap_indent
)
1777 + (save_chars
- wrap_column
);
1778 wrap_pointer
= wrap_buffer
; /* Reset buffer */
1779 wrap_buffer
[0] = '\0';
1780 wrap_column
= 0; /* And disable fancy wrap */
1785 if (*lineptr
== '\n')
1788 wrap_here ((char *)0); /* Spit out chars, cancel further wraps */
1790 fputc_unfiltered ('\n', stream
);
1797 fputs_filtered (linebuffer
, stream
)
1798 const char *linebuffer
;
1801 fputs_maybe_filtered (linebuffer
, stream
, 1);
1805 putchar_unfiltered (c
)
1812 fputs_unfiltered (buf
, gdb_stdout
);
1817 fputc_unfiltered (c
, stream
)
1825 fputs_unfiltered (buf
, stream
);
1830 fputc_filtered (c
, stream
)
1838 fputs_filtered (buf
, stream
);
1842 /* puts_debug is like fputs_unfiltered, except it prints special
1843 characters in printable fashion. */
1846 puts_debug (prefix
, string
, suffix
)
1853 /* Print prefix and suffix after each line. */
1854 static int new_line
= 1;
1855 static int return_p
= 0;
1856 static char *prev_prefix
= "";
1857 static char *prev_suffix
= "";
1859 if (*string
== '\n')
1862 /* If the prefix is changing, print the previous suffix, a new line,
1863 and the new prefix. */
1864 if ((return_p
|| (strcmp(prev_prefix
, prefix
) != 0)) && !new_line
)
1866 fputs_unfiltered (prev_suffix
, gdb_stderr
);
1867 fputs_unfiltered ("\n", gdb_stderr
);
1868 fputs_unfiltered (prefix
, gdb_stderr
);
1871 /* Print prefix if we printed a newline during the previous call. */
1875 fputs_unfiltered (prefix
, gdb_stderr
);
1878 prev_prefix
= prefix
;
1879 prev_suffix
= suffix
;
1881 /* Output characters in a printable format. */
1882 while ((ch
= *string
++) != '\0')
1888 fputc_unfiltered (ch
, gdb_stderr
);
1891 fprintf_unfiltered (gdb_stderr
, "\\x%02x", ch
& 0xff);
1894 case '\\': fputs_unfiltered ("\\\\", gdb_stderr
); break;
1895 case '\b': fputs_unfiltered ("\\b", gdb_stderr
); break;
1896 case '\f': fputs_unfiltered ("\\f", gdb_stderr
); break;
1897 case '\n': new_line
= 1;
1898 fputs_unfiltered ("\\n", gdb_stderr
); break;
1899 case '\r': fputs_unfiltered ("\\r", gdb_stderr
); break;
1900 case '\t': fputs_unfiltered ("\\t", gdb_stderr
); break;
1901 case '\v': fputs_unfiltered ("\\v", gdb_stderr
); break;
1904 return_p
= ch
== '\r';
1907 /* Print suffix if we printed a newline. */
1910 fputs_unfiltered (suffix
, gdb_stderr
);
1911 fputs_unfiltered ("\n", gdb_stderr
);
1916 /* Print a variable number of ARGS using format FORMAT. If this
1917 information is going to put the amount written (since the last call
1918 to REINITIALIZE_MORE_FILTER or the last page break) over the page size,
1919 call prompt_for_continue to get the users permision to continue.
1921 Unlike fprintf, this function does not return a value.
1923 We implement three variants, vfprintf (takes a vararg list and stream),
1924 fprintf (takes a stream to write on), and printf (the usual).
1926 Note also that a longjmp to top level may occur in this routine
1927 (since prompt_for_continue may do so) so this routine should not be
1928 called when cleanups are not in place. */
1931 vfprintf_maybe_filtered (stream
, format
, args
, filter
)
1938 struct cleanup
*old_cleanups
;
1940 vasprintf (&linebuffer
, format
, args
);
1941 if (linebuffer
== NULL
)
1943 fputs_unfiltered ("\ngdb: virtual memory exhausted.\n", gdb_stderr
);
1946 old_cleanups
= make_cleanup (free
, linebuffer
);
1947 fputs_maybe_filtered (linebuffer
, stream
, filter
);
1948 do_cleanups (old_cleanups
);
1953 vfprintf_filtered (stream
, format
, args
)
1958 vfprintf_maybe_filtered (stream
, format
, args
, 1);
1962 vfprintf_unfiltered (stream
, format
, args
)
1968 struct cleanup
*old_cleanups
;
1970 vasprintf (&linebuffer
, format
, args
);
1971 if (linebuffer
== NULL
)
1973 fputs_unfiltered ("\ngdb: virtual memory exhausted.\n", gdb_stderr
);
1976 old_cleanups
= make_cleanup (free
, linebuffer
);
1977 fputs_unfiltered (linebuffer
, stream
);
1978 do_cleanups (old_cleanups
);
1982 vprintf_filtered (format
, args
)
1986 vfprintf_maybe_filtered (gdb_stdout
, format
, args
, 1);
1990 vprintf_unfiltered (format
, args
)
1994 vfprintf_unfiltered (gdb_stdout
, format
, args
);
1999 #ifdef ANSI_PROTOTYPES
2000 fprintf_filtered (GDB_FILE
*stream
, const char *format
, ...)
2002 fprintf_filtered (va_alist
)
2007 #ifdef ANSI_PROTOTYPES
2008 va_start (args
, format
);
2014 stream
= va_arg (args
, GDB_FILE
*);
2015 format
= va_arg (args
, char *);
2017 vfprintf_filtered (stream
, format
, args
);
2023 #ifdef ANSI_PROTOTYPES
2024 fprintf_unfiltered (GDB_FILE
*stream
, const char *format
, ...)
2026 fprintf_unfiltered (va_alist
)
2031 #ifdef ANSI_PROTOTYPES
2032 va_start (args
, format
);
2038 stream
= va_arg (args
, GDB_FILE
*);
2039 format
= va_arg (args
, char *);
2041 vfprintf_unfiltered (stream
, format
, args
);
2045 /* Like fprintf_filtered, but prints its result indented.
2046 Called as fprintfi_filtered (spaces, stream, format, ...); */
2050 #ifdef ANSI_PROTOTYPES
2051 fprintfi_filtered (int spaces
, GDB_FILE
*stream
, const char *format
, ...)
2053 fprintfi_filtered (va_alist
)
2058 #ifdef ANSI_PROTOTYPES
2059 va_start (args
, format
);
2066 spaces
= va_arg (args
, int);
2067 stream
= va_arg (args
, GDB_FILE
*);
2068 format
= va_arg (args
, char *);
2070 print_spaces_filtered (spaces
, stream
);
2072 vfprintf_filtered (stream
, format
, args
);
2079 #ifdef ANSI_PROTOTYPES
2080 printf_filtered (const char *format
, ...)
2082 printf_filtered (va_alist
)
2087 #ifdef ANSI_PROTOTYPES
2088 va_start (args
, format
);
2093 format
= va_arg (args
, char *);
2095 vfprintf_filtered (gdb_stdout
, format
, args
);
2102 #ifdef ANSI_PROTOTYPES
2103 printf_unfiltered (const char *format
, ...)
2105 printf_unfiltered (va_alist
)
2110 #ifdef ANSI_PROTOTYPES
2111 va_start (args
, format
);
2116 format
= va_arg (args
, char *);
2118 vfprintf_unfiltered (gdb_stdout
, format
, args
);
2122 /* Like printf_filtered, but prints it's result indented.
2123 Called as printfi_filtered (spaces, format, ...); */
2127 #ifdef ANSI_PROTOTYPES
2128 printfi_filtered (int spaces
, const char *format
, ...)
2130 printfi_filtered (va_alist
)
2135 #ifdef ANSI_PROTOTYPES
2136 va_start (args
, format
);
2142 spaces
= va_arg (args
, int);
2143 format
= va_arg (args
, char *);
2145 print_spaces_filtered (spaces
, gdb_stdout
);
2146 vfprintf_filtered (gdb_stdout
, format
, args
);
2150 /* Easy -- but watch out!
2152 This routine is *not* a replacement for puts()! puts() appends a newline.
2153 This one doesn't, and had better not! */
2156 puts_filtered (string
)
2159 fputs_filtered (string
, gdb_stdout
);
2163 puts_unfiltered (string
)
2166 fputs_unfiltered (string
, gdb_stdout
);
2169 /* Return a pointer to N spaces and a null. The pointer is good
2170 until the next call to here. */
2176 static char *spaces
;
2177 static int max_spaces
;
2183 spaces
= (char *) xmalloc (n
+1);
2184 for (t
= spaces
+n
; t
!= spaces
;)
2190 return spaces
+ max_spaces
- n
;
2193 /* Print N spaces. */
2195 print_spaces_filtered (n
, stream
)
2199 fputs_filtered (n_spaces (n
), stream
);
2202 /* C++ demangler stuff. */
2204 /* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language
2205 LANG, using demangling args ARG_MODE, and print it filtered to STREAM.
2206 If the name is not mangled, or the language for the name is unknown, or
2207 demangling is off, the name is printed in its "raw" form. */
2210 fprintf_symbol_filtered (stream
, name
, lang
, arg_mode
)
2220 /* If user wants to see raw output, no problem. */
2223 fputs_filtered (name
, stream
);
2229 case language_cplus
:
2230 demangled
= cplus_demangle (name
, arg_mode
);
2232 /* start-sanitize-java */
2234 demangled
= cplus_demangle (name
, arg_mode
| DMGL_JAVA
);
2236 /* end-sanitize-java */
2237 case language_chill
:
2238 demangled
= chill_demangle (name
);
2244 fputs_filtered (demangled
? demangled
: name
, stream
);
2245 if (demangled
!= NULL
)
2253 /* Do a strcmp() type operation on STRING1 and STRING2, ignoring any
2254 differences in whitespace. Returns 0 if they match, non-zero if they
2255 don't (slightly different than strcmp()'s range of return values).
2257 As an extra hack, string1=="FOO(ARGS)" matches string2=="FOO".
2258 This "feature" is useful when searching for matching C++ function names
2259 (such as if the user types 'break FOO', where FOO is a mangled C++
2263 strcmp_iw (string1
, string2
)
2264 const char *string1
;
2265 const char *string2
;
2267 while ((*string1
!= '\0') && (*string2
!= '\0'))
2269 while (isspace (*string1
))
2273 while (isspace (*string2
))
2277 if (*string1
!= *string2
)
2281 if (*string1
!= '\0')
2287 return (*string1
!= '\0' && *string1
!= '(') || (*string2
!= '\0');
2293 ** Answer whether stringToCompare is a full or partial match to
2294 ** templateString. The partial match must be in sequence starting
2300 char *stringToCompare
,
2301 char *templateString
)
2303 subsetCompare(stringToCompare
, templateString
)
2304 char *stringToCompare
;
2305 char *templateString
;
2310 if (templateString
!= (char *)NULL
&& stringToCompare
!= (char *)NULL
&&
2311 strlen(stringToCompare
) <= strlen(templateString
))
2312 match
= (strncmp(templateString
,
2314 strlen(stringToCompare
)) == 0);
2317 } /* subsetCompare */
2320 void pagination_on_command(arg
, from_tty
)
2324 pagination_enabled
= 1;
2327 void pagination_off_command(arg
, from_tty
)
2331 pagination_enabled
= 0;
2338 struct cmd_list_element
*c
;
2340 c
= add_set_cmd ("width", class_support
, var_uinteger
,
2341 (char *)&chars_per_line
,
2342 "Set number of characters gdb thinks are in a line.",
2344 add_show_from_set (c
, &showlist
);
2345 c
->function
.sfunc
= set_width_command
;
2348 (add_set_cmd ("height", class_support
,
2349 var_uinteger
, (char *)&lines_per_page
,
2350 "Set number of lines gdb thinks are in a page.", &setlist
),
2355 /* If the output is not a terminal, don't paginate it. */
2356 if (!GDB_FILE_ISATTY (gdb_stdout
))
2357 lines_per_page
= UINT_MAX
;
2359 set_width_command ((char *)NULL
, 0, c
);
2362 (add_set_cmd ("demangle", class_support
, var_boolean
,
2364 "Set demangling of encoded C++ names when displaying symbols.",
2369 (add_set_cmd ("pagination", class_support
,
2370 var_boolean
, (char *)&pagination_enabled
,
2371 "Set state of pagination.", &setlist
),
2375 add_com("am", class_support
, pagination_on_command
,
2376 "Enable pagination");
2377 add_com("sm", class_support
, pagination_off_command
,
2378 "Disable pagination");
2382 (add_set_cmd ("sevenbit-strings", class_support
, var_boolean
,
2383 (char *)&sevenbit_strings
,
2384 "Set printing of 8-bit characters in strings as \\nnn.",
2389 (add_set_cmd ("asm-demangle", class_support
, var_boolean
,
2390 (char *)&asm_demangle
,
2391 "Set demangling of C++ names in disassembly listings.",
2396 /* Machine specific function to handle SIGWINCH signal. */
2398 #ifdef SIGWINCH_HANDLER_BODY
2399 SIGWINCH_HANDLER_BODY
2402 /* Support for converting target fp numbers into host DOUBLEST format. */
2404 /* XXX - This code should really be in libiberty/floatformat.c, however
2405 configuration issues with libiberty made this very difficult to do in the
2408 #include "floatformat.h"
2409 #include <math.h> /* ldexp */
2411 /* The odds that CHAR_BIT will be anything but 8 are low enough that I'm not
2412 going to bother with trying to muck around with whether it is defined in
2413 a system header, what we do if not, etc. */
2414 #define FLOATFORMAT_CHAR_BIT 8
2416 static unsigned long get_field
PARAMS ((unsigned char *,
2417 enum floatformat_byteorders
,
2422 /* Extract a field which starts at START and is LEN bytes long. DATA and
2423 TOTAL_LEN are the thing we are extracting it from, in byteorder ORDER. */
2424 static unsigned long
2425 get_field (data
, order
, total_len
, start
, len
)
2426 unsigned char *data
;
2427 enum floatformat_byteorders order
;
2428 unsigned int total_len
;
2432 unsigned long result
;
2433 unsigned int cur_byte
;
2436 /* Start at the least significant part of the field. */
2437 cur_byte
= (start
+ len
) / FLOATFORMAT_CHAR_BIT
;
2438 if (order
== floatformat_little
|| order
== floatformat_littlebyte_bigword
)
2439 cur_byte
= (total_len
/ FLOATFORMAT_CHAR_BIT
) - cur_byte
- 1;
2441 ((start
+ len
) % FLOATFORMAT_CHAR_BIT
) - FLOATFORMAT_CHAR_BIT
;
2442 result
= *(data
+ cur_byte
) >> (-cur_bitshift
);
2443 cur_bitshift
+= FLOATFORMAT_CHAR_BIT
;
2444 if (order
== floatformat_little
|| order
== floatformat_littlebyte_bigword
)
2449 /* Move towards the most significant part of the field. */
2450 while (cur_bitshift
< len
)
2452 if (len
- cur_bitshift
< FLOATFORMAT_CHAR_BIT
)
2453 /* This is the last byte; zero out the bits which are not part of
2456 (*(data
+ cur_byte
) & ((1 << (len
- cur_bitshift
)) - 1))
2459 result
|= *(data
+ cur_byte
) << cur_bitshift
;
2460 cur_bitshift
+= FLOATFORMAT_CHAR_BIT
;
2461 if (order
== floatformat_little
|| order
== floatformat_littlebyte_bigword
)
2469 /* Convert from FMT to a DOUBLEST.
2470 FROM is the address of the extended float.
2471 Store the DOUBLEST in *TO. */
2474 floatformat_to_doublest (fmt
, from
, to
)
2475 const struct floatformat
*fmt
;
2479 unsigned char *ufrom
= (unsigned char *)from
;
2483 unsigned int mant_bits
, mant_off
;
2485 int special_exponent
; /* It's a NaN, denorm or zero */
2487 /* If the mantissa bits are not contiguous from one end of the
2488 mantissa to the other, we need to make a private copy of the
2489 source bytes that is in the right order since the unpacking
2490 algorithm assumes that the bits are contiguous.
2492 Swap the bytes individually rather than accessing them through
2493 "long *" since we have no guarantee that they start on a long
2494 alignment, and also sizeof(long) for the host could be different
2495 than sizeof(long) for the target. FIXME: Assumes sizeof(long)
2496 for the target is 4. */
2498 if (fmt
-> byteorder
== floatformat_littlebyte_bigword
)
2500 static unsigned char *newfrom
;
2501 unsigned char *swapin
, *swapout
;
2504 longswaps
= fmt
-> totalsize
/ FLOATFORMAT_CHAR_BIT
;
2507 if (newfrom
== NULL
)
2509 newfrom
= (unsigned char *) xmalloc (fmt
-> totalsize
);
2514 while (longswaps
-- > 0)
2516 /* This is ugly, but efficient */
2517 *swapout
++ = swapin
[4];
2518 *swapout
++ = swapin
[5];
2519 *swapout
++ = swapin
[6];
2520 *swapout
++ = swapin
[7];
2521 *swapout
++ = swapin
[0];
2522 *swapout
++ = swapin
[1];
2523 *swapout
++ = swapin
[2];
2524 *swapout
++ = swapin
[3];
2529 exponent
= get_field (ufrom
, fmt
->byteorder
, fmt
->totalsize
,
2530 fmt
->exp_start
, fmt
->exp_len
);
2531 /* Note that if exponent indicates a NaN, we can't really do anything useful
2532 (not knowing if the host has NaN's, or how to build one). So it will
2533 end up as an infinity or something close; that is OK. */
2535 mant_bits_left
= fmt
->man_len
;
2536 mant_off
= fmt
->man_start
;
2539 special_exponent
= exponent
== 0 || exponent
== fmt
->exp_nan
;
2541 /* Don't bias zero's, denorms or NaNs. */
2542 if (!special_exponent
)
2543 exponent
-= fmt
->exp_bias
;
2545 /* Build the result algebraically. Might go infinite, underflow, etc;
2548 /* If this format uses a hidden bit, explicitly add it in now. Otherwise,
2549 increment the exponent by one to account for the integer bit. */
2551 if (!special_exponent
)
2552 if (fmt
->intbit
== floatformat_intbit_no
)
2553 dto
= ldexp (1.0, exponent
);
2557 while (mant_bits_left
> 0)
2559 mant_bits
= min (mant_bits_left
, 32);
2561 mant
= get_field (ufrom
, fmt
->byteorder
, fmt
->totalsize
,
2562 mant_off
, mant_bits
);
2564 dto
+= ldexp ((double)mant
, exponent
- mant_bits
);
2565 exponent
-= mant_bits
;
2566 mant_off
+= mant_bits
;
2567 mant_bits_left
-= mant_bits
;
2570 /* Negate it if negative. */
2571 if (get_field (ufrom
, fmt
->byteorder
, fmt
->totalsize
, fmt
->sign_start
, 1))
2576 static void put_field
PARAMS ((unsigned char *, enum floatformat_byteorders
,
2582 /* Set a field which starts at START and is LEN bytes long. DATA and
2583 TOTAL_LEN are the thing we are extracting it from, in byteorder ORDER. */
2585 put_field (data
, order
, total_len
, start
, len
, stuff_to_put
)
2586 unsigned char *data
;
2587 enum floatformat_byteorders order
;
2588 unsigned int total_len
;
2591 unsigned long stuff_to_put
;
2593 unsigned int cur_byte
;
2596 /* Start at the least significant part of the field. */
2597 cur_byte
= (start
+ len
) / FLOATFORMAT_CHAR_BIT
;
2598 if (order
== floatformat_little
|| order
== floatformat_littlebyte_bigword
)
2599 cur_byte
= (total_len
/ FLOATFORMAT_CHAR_BIT
) - cur_byte
- 1;
2601 ((start
+ len
) % FLOATFORMAT_CHAR_BIT
) - FLOATFORMAT_CHAR_BIT
;
2602 *(data
+ cur_byte
) &=
2603 ~(((1 << ((start
+ len
) % FLOATFORMAT_CHAR_BIT
)) - 1) << (-cur_bitshift
));
2604 *(data
+ cur_byte
) |=
2605 (stuff_to_put
& ((1 << FLOATFORMAT_CHAR_BIT
) - 1)) << (-cur_bitshift
);
2606 cur_bitshift
+= FLOATFORMAT_CHAR_BIT
;
2607 if (order
== floatformat_little
|| order
== floatformat_littlebyte_bigword
)
2612 /* Move towards the most significant part of the field. */
2613 while (cur_bitshift
< len
)
2615 if (len
- cur_bitshift
< FLOATFORMAT_CHAR_BIT
)
2617 /* This is the last byte. */
2618 *(data
+ cur_byte
) &=
2619 ~((1 << (len
- cur_bitshift
)) - 1);
2620 *(data
+ cur_byte
) |= (stuff_to_put
>> cur_bitshift
);
2623 *(data
+ cur_byte
) = ((stuff_to_put
>> cur_bitshift
)
2624 & ((1 << FLOATFORMAT_CHAR_BIT
) - 1));
2625 cur_bitshift
+= FLOATFORMAT_CHAR_BIT
;
2626 if (order
== floatformat_little
|| order
== floatformat_littlebyte_bigword
)
2633 #ifdef HAVE_LONG_DOUBLE
2634 /* Return the fractional part of VALUE, and put the exponent of VALUE in *EPTR.
2635 The range of the returned value is >= 0.5 and < 1.0. This is equivalent to
2636 frexp, but operates on the long double data type. */
2638 static long double ldfrexp
PARAMS ((long double value
, int *eptr
));
2641 ldfrexp (value
, eptr
)
2648 /* Unfortunately, there are no portable functions for extracting the exponent
2649 of a long double, so we have to do it iteratively by multiplying or dividing
2650 by two until the fraction is between 0.5 and 1.0. */
2658 if (value
>= tmp
) /* Value >= 1.0 */
2659 while (value
>= tmp
)
2664 else if (value
!= 0.0l) /* Value < 1.0 and > 0.0 */
2678 #endif /* HAVE_LONG_DOUBLE */
2681 /* The converse: convert the DOUBLEST *FROM to an extended float
2682 and store where TO points. Neither FROM nor TO have any alignment
2686 floatformat_from_doublest (fmt
, from
, to
)
2687 CONST
struct floatformat
*fmt
;
2694 unsigned int mant_bits
, mant_off
;
2696 unsigned char *uto
= (unsigned char *)to
;
2698 memcpy (&dfrom
, from
, sizeof (dfrom
));
2699 memset (uto
, 0, fmt
->totalsize
/ FLOATFORMAT_CHAR_BIT
);
2701 return; /* Result is zero */
2702 if (dfrom
!= dfrom
) /* Result is NaN */
2705 put_field (uto
, fmt
->byteorder
, fmt
->totalsize
, fmt
->exp_start
,
2706 fmt
->exp_len
, fmt
->exp_nan
);
2707 /* Be sure it's not infinity, but NaN value is irrel */
2708 put_field (uto
, fmt
->byteorder
, fmt
->totalsize
, fmt
->man_start
,
2713 /* If negative, set the sign bit. */
2716 put_field (uto
, fmt
->byteorder
, fmt
->totalsize
, fmt
->sign_start
, 1, 1);
2720 if (dfrom
+ dfrom
== dfrom
&& dfrom
!= 0.0) /* Result is Infinity */
2722 /* Infinity exponent is same as NaN's. */
2723 put_field (uto
, fmt
->byteorder
, fmt
->totalsize
, fmt
->exp_start
,
2724 fmt
->exp_len
, fmt
->exp_nan
);
2725 /* Infinity mantissa is all zeroes. */
2726 put_field (uto
, fmt
->byteorder
, fmt
->totalsize
, fmt
->man_start
,
2731 #ifdef HAVE_LONG_DOUBLE
2732 mant
= ldfrexp (dfrom
, &exponent
);
2734 mant
= frexp (dfrom
, &exponent
);
2737 put_field (uto
, fmt
->byteorder
, fmt
->totalsize
, fmt
->exp_start
, fmt
->exp_len
,
2738 exponent
+ fmt
->exp_bias
- 1);
2740 mant_bits_left
= fmt
->man_len
;
2741 mant_off
= fmt
->man_start
;
2742 while (mant_bits_left
> 0)
2744 unsigned long mant_long
;
2745 mant_bits
= mant_bits_left
< 32 ? mant_bits_left
: 32;
2747 mant
*= 4294967296.0;
2748 mant_long
= (unsigned long)mant
;
2751 /* If the integer bit is implicit, then we need to discard it.
2752 If we are discarding a zero, we should be (but are not) creating
2753 a denormalized number which means adjusting the exponent
2755 if (mant_bits_left
== fmt
->man_len
2756 && fmt
->intbit
== floatformat_intbit_no
)
2764 /* The bits we want are in the most significant MANT_BITS bits of
2765 mant_long. Move them to the least significant. */
2766 mant_long
>>= 32 - mant_bits
;
2769 put_field (uto
, fmt
->byteorder
, fmt
->totalsize
,
2770 mant_off
, mant_bits
, mant_long
);
2771 mant_off
+= mant_bits
;
2772 mant_bits_left
-= mant_bits
;
2774 if (fmt
-> byteorder
== floatformat_littlebyte_bigword
)
2777 unsigned char *swaplow
= uto
;
2778 unsigned char *swaphigh
= uto
+ 4;
2781 for (count
= 0; count
< 4; count
++)
2784 *swaplow
++ = *swaphigh
;
2790 /* temporary storage using circular buffer */
2796 static char buf
[NUMCELLS
][CELLSIZE
];
2798 if (++cell
>=NUMCELLS
) cell
=0;
2802 /* print routines to handle variable size regs, etc.
2804 FIXME: Note that t_addr is a bfd_vma, which is currently either an
2805 unsigned long or unsigned long long, determined at configure time.
2806 If t_addr is an unsigned long long and sizeof (unsigned long long)
2807 is greater than sizeof (unsigned long), then I believe this code will
2808 probably lose, at least for little endian machines. I believe that
2809 it would also be better to eliminate the switch on the absolute size
2810 of t_addr and replace it with a sequence of if statements that compare
2811 sizeof t_addr with sizeof the various types and do the right thing,
2812 which includes knowing whether or not the host supports long long.
2817 static int thirty_two
= 32; /* eliminate warning from compiler on 32-bit systems */
2823 char *paddr_str
=get_cell();
2824 switch (sizeof(t_addr
))
2827 sprintf (paddr_str
, "%08lx%08lx",
2828 (unsigned long) (addr
>> thirty_two
), (unsigned long) (addr
& 0xffffffff));
2831 sprintf (paddr_str
, "%08lx", (unsigned long) addr
);
2834 sprintf (paddr_str
, "%04x", (unsigned short) (addr
& 0xffff));
2837 sprintf (paddr_str
, "%lx", (unsigned long) addr
);
2846 char *preg_str
=get_cell();
2847 switch (sizeof(t_reg
))
2850 sprintf (preg_str
, "%08lx%08lx",
2851 (unsigned long) (reg
>> thirty_two
), (unsigned long) (reg
& 0xffffffff));
2854 sprintf (preg_str
, "%08lx", (unsigned long) reg
);
2857 sprintf (preg_str
, "%04x", (unsigned short) (reg
& 0xffff));
2860 sprintf (preg_str
, "%lx", (unsigned long) reg
);
2869 char *paddr_str
=get_cell();
2870 switch (sizeof(t_addr
))
2874 unsigned long high
= (unsigned long) (addr
>> thirty_two
);
2876 sprintf (paddr_str
, "%lx", (unsigned long) (addr
& 0xffffffff));
2878 sprintf (paddr_str
, "%lx%08lx",
2879 high
, (unsigned long) (addr
& 0xffffffff));
2883 sprintf (paddr_str
, "%lx", (unsigned long) addr
);
2886 sprintf (paddr_str
, "%x", (unsigned short) (addr
& 0xffff));
2889 sprintf (paddr_str
,"%lx", (unsigned long) addr
);
2898 char *preg_str
=get_cell();
2899 switch (sizeof(t_reg
))
2903 unsigned long high
= (unsigned long) (reg
>> thirty_two
);
2905 sprintf (preg_str
, "%lx", (unsigned long) (reg
& 0xffffffff));
2907 sprintf (preg_str
, "%lx%08lx",
2908 high
, (unsigned long) (reg
& 0xffffffff));
2912 sprintf (preg_str
, "%lx", (unsigned long) reg
);
2915 sprintf (preg_str
, "%x", (unsigned short) (reg
& 0xffff));
2918 sprintf (preg_str
, "%lx", (unsigned long) reg
);