1 /* General utility routines for GDB, the GNU debugger.
2 Copyright 1986, 89, 90, 91, 92, 95, 96, 1998 Free Software Foundation, Inc.
4 This file is part of GDB.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
22 #include "gdb_string.h"
34 /* SunOS's curses.h has a '#define reg register' in it. Thank you Sun. */
45 #include "expression.h"
49 #include <readline/readline.h>
51 /* readline defines this. */
54 void (*error_begin_hook) PARAMS ((void));
56 /* Prototypes for local functions */
58 static void vfprintf_maybe_filtered PARAMS ((GDB_FILE *, const char *,
61 static void fputs_maybe_filtered PARAMS ((const char *, GDB_FILE *, int));
63 #if defined (USE_MMALLOC) && !defined (NO_MMCHECK)
64 static void malloc_botch PARAMS ((void));
68 fatal_dump_core PARAMS((char *, ...));
71 prompt_for_continue PARAMS ((void));
74 set_width_command PARAMS ((char *, int, struct cmd_list_element *));
77 set_width PARAMS ((void));
79 /* If this definition isn't overridden by the header files, assume
80 that isatty and fileno exist on this system. */
82 #define ISATTY(FP) (isatty (fileno (FP)))
85 #ifndef GDB_FILE_ISATTY
86 #define GDB_FILE_ISATTY(GDB_FILE_PTR) (gdb_file_isatty(GDB_FILE_PTR))
89 /* Chain of cleanup actions established with make_cleanup,
90 to be executed if an error happens. */
92 static struct cleanup *cleanup_chain; /* cleaned up after a failed command */
93 static struct cleanup *final_cleanup_chain; /* cleaned up when gdb exits */
94 static struct cleanup *run_cleanup_chain; /* cleaned up on each 'run' */
96 /* Nonzero if we have job control. */
100 /* Nonzero means a quit has been requested. */
104 /* Nonzero means quit immediately if Control-C is typed now, rather
105 than waiting until QUIT is executed. Be careful in setting this;
106 code which executes with immediate_quit set has to be very careful
107 about being able to deal with being interrupted at any time. It is
108 almost always better to use QUIT; the only exception I can think of
109 is being able to quit out of a system call (using EINTR loses if
110 the SIGINT happens between the previous QUIT and the system call).
111 To immediately quit in the case in which a SIGINT happens between
112 the previous QUIT and setting immediate_quit (desirable anytime we
113 expect to block), call QUIT after setting immediate_quit. */
117 /* Nonzero means that encoded C++ names should be printed out in their
118 C++ form rather than raw. */
122 /* Nonzero means that encoded C++ names should be printed out in their
123 C++ form even in assembler language displays. If this is set, but
124 DEMANGLE is zero, names are printed raw, i.e. DEMANGLE controls. */
126 int asm_demangle = 0;
128 /* Nonzero means that strings with character values >0x7F should be printed
129 as octal escapes. Zero means just print the value (e.g. it's an
130 international character, and the terminal or window can cope.) */
132 int sevenbit_strings = 0;
134 /* String to be printed before error messages, if any. */
136 char *error_pre_print;
138 /* String to be printed before quit messages, if any. */
140 char *quit_pre_print;
142 /* String to be printed before warning messages, if any. */
144 char *warning_pre_print = "\nwarning: ";
146 int pagination_enabled = 1;
149 /* Add a new cleanup to the cleanup_chain,
150 and return the previous chain pointer
151 to be passed later to do_cleanups or discard_cleanups.
152 Args are FUNCTION to clean up with, and ARG to pass to it. */
155 make_cleanup (function, arg)
156 void (*function) PARAMS ((PTR));
159 return make_my_cleanup (&cleanup_chain, function, arg);
163 make_final_cleanup (function, arg)
164 void (*function) PARAMS ((PTR));
167 return make_my_cleanup (&final_cleanup_chain, function, arg);
170 make_run_cleanup (function, arg)
171 void (*function) PARAMS ((PTR));
174 return make_my_cleanup (&run_cleanup_chain, function, arg);
177 make_my_cleanup (pmy_chain, function, arg)
178 struct cleanup **pmy_chain;
179 void (*function) PARAMS ((PTR));
182 register struct cleanup *new
183 = (struct cleanup *) xmalloc (sizeof (struct cleanup));
184 register struct cleanup *old_chain = *pmy_chain;
186 new->next = *pmy_chain;
187 new->function = function;
194 /* Discard cleanups and do the actions they describe
195 until we get back to the point OLD_CHAIN in the cleanup_chain. */
198 do_cleanups (old_chain)
199 register struct cleanup *old_chain;
201 do_my_cleanups (&cleanup_chain, old_chain);
205 do_final_cleanups (old_chain)
206 register struct cleanup *old_chain;
208 do_my_cleanups (&final_cleanup_chain, old_chain);
212 do_run_cleanups (old_chain)
213 register struct cleanup *old_chain;
215 do_my_cleanups (&run_cleanup_chain, old_chain);
219 do_my_cleanups (pmy_chain, old_chain)
220 register struct cleanup **pmy_chain;
221 register struct cleanup *old_chain;
223 register struct cleanup *ptr;
224 while ((ptr = *pmy_chain) != old_chain)
226 *pmy_chain = ptr->next; /* Do this first incase recursion */
227 (*ptr->function) (ptr->arg);
232 /* Discard cleanups, not doing the actions they describe,
233 until we get back to the point OLD_CHAIN in the cleanup_chain. */
236 discard_cleanups (old_chain)
237 register struct cleanup *old_chain;
239 discard_my_cleanups (&cleanup_chain, old_chain);
243 discard_final_cleanups (old_chain)
244 register struct cleanup *old_chain;
246 discard_my_cleanups (&final_cleanup_chain, old_chain);
250 discard_my_cleanups (pmy_chain, old_chain)
251 register struct cleanup **pmy_chain;
252 register struct cleanup *old_chain;
254 register struct cleanup *ptr;
255 while ((ptr = *pmy_chain) != old_chain)
257 *pmy_chain = ptr->next;
262 /* Set the cleanup_chain to 0, and return the old cleanup chain. */
266 return save_my_cleanups (&cleanup_chain);
270 save_final_cleanups ()
272 return save_my_cleanups (&final_cleanup_chain);
276 save_my_cleanups (pmy_chain)
277 struct cleanup **pmy_chain;
279 struct cleanup *old_chain = *pmy_chain;
285 /* Restore the cleanup chain from a previously saved chain. */
287 restore_cleanups (chain)
288 struct cleanup *chain;
290 restore_my_cleanups (&cleanup_chain, chain);
294 restore_final_cleanups (chain)
295 struct cleanup *chain;
297 restore_my_cleanups (&final_cleanup_chain, chain);
301 restore_my_cleanups (pmy_chain, chain)
302 struct cleanup **pmy_chain;
303 struct cleanup *chain;
308 /* This function is useful for cleanups.
312 old_chain = make_cleanup (free_current_contents, &foo);
314 to arrange to free the object thus allocated. */
317 free_current_contents (location)
323 /* Provide a known function that does nothing, to use as a base for
324 for a possibly long chain of cleanups. This is useful where we
325 use the cleanup chain for handling normal cleanups as well as dealing
326 with cleanups that need to be done as a result of a call to error().
327 In such cases, we may not be certain where the first cleanup is, unless
328 we have a do-nothing one to always use as the base. */
338 /* Print a warning message. Way to use this is to call warning_begin,
339 output the warning message (use unfiltered output to gdb_stderr),
340 ending in a newline. There is not currently a warning_end that you
341 call afterwards, but such a thing might be added if it is useful
342 for a GUI to separate warning messages from other output.
344 FIXME: Why do warnings use unfiltered output and errors filtered?
345 Is this anything other than a historical accident? */
350 target_terminal_ours ();
351 wrap_here(""); /* Force out any buffered output */
352 gdb_flush (gdb_stdout);
353 if (warning_pre_print)
354 fprintf_unfiltered (gdb_stderr, warning_pre_print);
357 /* Print a warning message.
358 The first argument STRING is the warning message, used as a fprintf string,
359 and the remaining args are passed as arguments to it.
360 The primary difference between warnings and errors is that a warning
361 does not force the return to command level. */
365 #ifdef ANSI_PROTOTYPES
366 warning (const char *string, ...)
373 #ifdef ANSI_PROTOTYPES
374 va_start (args, string);
379 string = va_arg (args, char *);
382 (*warning_hook) (string, args);
386 vfprintf_unfiltered (gdb_stderr, string, args);
387 fprintf_unfiltered (gdb_stderr, "\n");
392 /* Start the printing of an error message. Way to use this is to call
393 this, output the error message (use filtered output to gdb_stderr
394 (FIXME: Some callers, like memory_error, use gdb_stdout)), ending
395 in a newline, and then call return_to_top_level (RETURN_ERROR).
396 error() provides a convenient way to do this for the special case
397 that the error message can be formatted with a single printf call,
398 but this is more general. */
402 if (error_begin_hook)
405 target_terminal_ours ();
406 wrap_here (""); /* Force out any buffered output */
407 gdb_flush (gdb_stdout);
409 annotate_error_begin ();
412 fprintf_filtered (gdb_stderr, error_pre_print);
415 /* Print an error message and return to command level.
416 The first argument STRING is the error message, used as a fprintf string,
417 and the remaining args are passed as arguments to it. */
421 #ifdef ANSI_PROTOTYPES
422 error (const char *string, ...)
429 #ifdef ANSI_PROTOTYPES
430 va_start (args, string);
439 #ifdef ANSI_PROTOTYPES
440 vfprintf_filtered (gdb_stderr, string, args);
445 string1 = va_arg (args, char *);
446 vfprintf_filtered (gdb_stderr, string1, args);
449 fprintf_filtered (gdb_stderr, "\n");
451 return_to_top_level (RETURN_ERROR);
456 /* Print an error message and exit reporting failure.
457 This is for a error that we cannot continue from.
458 The arguments are printed a la printf.
460 This function cannot be declared volatile (NORETURN) in an
461 ANSI environment because exit() is not declared volatile. */
465 #ifdef ANSI_PROTOTYPES
466 fatal (char *string, ...)
473 #ifdef ANSI_PROTOTYPES
474 va_start (args, string);
478 string = va_arg (args, char *);
480 fprintf_unfiltered (gdb_stderr, "\ngdb: ");
481 vfprintf_unfiltered (gdb_stderr, string, args);
482 fprintf_unfiltered (gdb_stderr, "\n");
487 /* Print an error message and exit, dumping core.
488 The arguments are printed a la printf (). */
492 #ifdef ANSI_PROTOTYPES
493 fatal_dump_core (char *string, ...)
495 fatal_dump_core (va_alist)
500 #ifdef ANSI_PROTOTYPES
501 va_start (args, string);
506 string = va_arg (args, char *);
508 /* "internal error" is always correct, since GDB should never dump
509 core, no matter what the input. */
510 fprintf_unfiltered (gdb_stderr, "\ngdb internal error: ");
511 vfprintf_unfiltered (gdb_stderr, string, args);
512 fprintf_unfiltered (gdb_stderr, "\n");
515 signal (SIGQUIT, SIG_DFL);
516 kill (getpid (), SIGQUIT);
517 /* We should never get here, but just in case... */
521 /* The strerror() function can return NULL for errno values that are
522 out of range. Provide a "safe" version that always returns a
526 safe_strerror (errnum)
532 if ((msg = strerror (errnum)) == NULL)
534 sprintf (buf, "(undocumented errno %d)", errnum);
540 /* The strsignal() function can return NULL for signal values that are
541 out of range. Provide a "safe" version that always returns a
545 safe_strsignal (signo)
551 if ((msg = strsignal (signo)) == NULL)
553 sprintf (buf, "(undocumented signal %d)", signo);
560 /* Print the system error message for errno, and also mention STRING
561 as the file name for which the error was encountered.
562 Then return to command level. */
565 perror_with_name (string)
571 err = safe_strerror (errno);
572 combined = (char *) alloca (strlen (err) + strlen (string) + 3);
573 strcpy (combined, string);
574 strcat (combined, ": ");
575 strcat (combined, err);
577 /* I understand setting these is a matter of taste. Still, some people
578 may clear errno but not know about bfd_error. Doing this here is not
580 bfd_set_error (bfd_error_no_error);
583 error ("%s.", combined);
586 /* Print the system error message for ERRCODE, and also mention STRING
587 as the file name for which the error was encountered. */
590 print_sys_errmsg (string, errcode)
597 err = safe_strerror (errcode);
598 combined = (char *) alloca (strlen (err) + strlen (string) + 3);
599 strcpy (combined, string);
600 strcat (combined, ": ");
601 strcat (combined, err);
603 /* We want anything which was printed on stdout to come out first, before
605 gdb_flush (gdb_stdout);
606 fprintf_unfiltered (gdb_stderr, "%s.\n", combined);
609 /* Control C eventually causes this to be called, at a convenient time. */
614 serial_t gdb_stdout_serial = serial_fdopen (1);
616 target_terminal_ours ();
618 /* We want all output to appear now, before we print "Quit". We
619 have 3 levels of buffering we have to flush (it's possible that
620 some of these should be changed to flush the lower-level ones
623 /* 1. The _filtered buffer. */
624 wrap_here ((char *)0);
626 /* 2. The stdio buffer. */
627 gdb_flush (gdb_stdout);
628 gdb_flush (gdb_stderr);
630 /* 3. The system-level buffer. */
631 SERIAL_DRAIN_OUTPUT (gdb_stdout_serial);
632 SERIAL_UN_FDOPEN (gdb_stdout_serial);
634 annotate_error_begin ();
636 /* Don't use *_filtered; we don't want to prompt the user to continue. */
638 fprintf_unfiltered (gdb_stderr, quit_pre_print);
641 /* If there is no terminal switching for this target, then we can't
642 possibly get screwed by the lack of job control. */
643 || current_target.to_terminal_ours == NULL)
644 fprintf_unfiltered (gdb_stderr, "Quit\n");
646 fprintf_unfiltered (gdb_stderr,
647 "Quit (expect signal SIGINT when the program is resumed)\n");
648 return_to_top_level (RETURN_QUIT);
652 #if defined(__GO32__)
654 /* In the absence of signals, poll keyboard for a quit.
655 Called from #define QUIT pollquit() in xm-go32.h. */
670 /* We just ignore it */
671 /* FIXME!! Don't think this actually works! */
672 fprintf_unfiltered (gdb_stderr, "CTRL-A to quit, CTRL-B to quit harder\n");
677 #elif defined(_MSC_VER) /* should test for wingdb instead? */
680 * Windows translates all keyboard and mouse events
681 * into a message which is appended to the message
682 * queue for the process.
687 int k = win32pollquit();
694 #else /* !defined(__GO32__) && !defined(_MSC_VER) */
698 /* Done by signals */
701 #endif /* !defined(__GO32__) && !defined(_MSC_VER) */
707 if (quit_flag || immediate_quit)
711 /* Control C comes here */
718 /* Restore the signal handler. Harmless with BSD-style signals, needed
719 for System V-style signals. So just always do it, rather than worrying
720 about USG defines and stuff like that. */
721 signal (signo, request_quit);
732 /* Memory management stuff (malloc friends). */
734 /* Make a substitute size_t for non-ANSI compilers. */
736 #ifndef HAVE_STDDEF_H
738 #define size_t unsigned int
742 #if !defined (USE_MMALLOC)
749 return malloc (size);
753 mrealloc (md, ptr, size)
758 if (ptr == 0) /* Guard against old realloc's */
759 return malloc (size);
761 return realloc (ptr, size);
772 #endif /* USE_MMALLOC */
774 #if !defined (USE_MMALLOC) || defined (NO_MMCHECK)
782 #else /* Have mmalloc and want corruption checking */
787 fatal_dump_core ("Memory corruption");
790 /* Attempt to install hooks in mmalloc/mrealloc/mfree for the heap specified
791 by MD, to detect memory corruption. Note that MD may be NULL to specify
792 the default heap that grows via sbrk.
794 Note that for freshly created regions, we must call mmcheckf prior to any
795 mallocs in the region. Otherwise, any region which was allocated prior to
796 installing the checking hooks, which is later reallocated or freed, will
797 fail the checks! The mmcheck function only allows initial hooks to be
798 installed before the first mmalloc. However, anytime after we have called
799 mmcheck the first time to install the checking hooks, we can call it again
800 to update the function pointer to the memory corruption handler.
802 Returns zero on failure, non-zero on success. */
804 #ifndef MMCHECK_FORCE
805 #define MMCHECK_FORCE 0
812 if (!mmcheckf (md, malloc_botch, MMCHECK_FORCE))
814 /* Don't use warning(), which relies on current_target being set
815 to something other than dummy_target, until after
816 initialize_all_files(). */
819 (gdb_stderr, "warning: failed to install memory consistency checks; ");
821 (gdb_stderr, "configuration should define NO_MMCHECK or MMCHECK_FORCE\n");
827 #endif /* Have mmalloc and want corruption checking */
829 /* Called when a memory allocation fails, with the number of bytes of
830 memory requested in SIZE. */
838 fatal ("virtual memory exhausted: can't allocate %ld bytes.", size);
842 fatal ("virtual memory exhausted.");
846 /* Like mmalloc but get error if no storage available, and protect against
847 the caller wanting to allocate zero bytes. Whether to return NULL for
848 a zero byte request, or translate the request into a request for one
849 byte of zero'd storage, is a religious issue. */
862 else if ((val = mmalloc (md, size)) == NULL)
869 /* Like mrealloc but get error if no storage available. */
872 xmrealloc (md, ptr, size)
881 val = mrealloc (md, ptr, size);
885 val = mmalloc (md, size);
894 /* Like malloc but get error if no storage available, and protect against
895 the caller wanting to allocate zero bytes. */
901 return (xmmalloc ((PTR) NULL, size));
904 /* Like mrealloc but get error if no storage available. */
911 return (xmrealloc ((PTR) NULL, ptr, size));
915 /* My replacement for the read system call.
916 Used like `read' but keeps going if `read' returns too soon. */
919 myread (desc, addr, len)
929 val = read (desc, addr, len);
940 /* Make a copy of the string at PTR with SIZE characters
941 (and add a null character at the end in the copy).
942 Uses malloc to get the space. Returns the address of the copy. */
945 savestring (ptr, size)
949 register char *p = (char *) xmalloc (size + 1);
950 memcpy (p, ptr, size);
956 msavestring (md, ptr, size)
961 register char *p = (char *) xmmalloc (md, size + 1);
962 memcpy (p, ptr, size);
967 /* The "const" is so it compiles under DGUX (which prototypes strsave
968 in <string.h>. FIXME: This should be named "xstrsave", shouldn't it?
969 Doesn't real strsave return NULL if out of memory? */
974 return savestring (ptr, strlen (ptr));
982 return (msavestring (md, ptr, strlen (ptr)));
986 print_spaces (n, file)
988 register GDB_FILE *file;
990 if (file->ts_streamtype == astring)
994 gdb_file_adjust_strbuf (n, file);
995 p = file->ts_strbuf + strlen (file->ts_strbuf);
1003 fputc (' ', file->ts_filestream);
1007 /* Print a host address. */
1010 gdb_print_address (addr, stream)
1015 /* We could use the %p conversion specifier to fprintf if we had any
1016 way of knowing whether this host supports it. But the following
1017 should work on the Alpha and on 32 bit machines. */
1019 fprintf_filtered (stream, "0x%lx", (unsigned long)addr);
1022 /* Ask user a y-or-n question and return 1 iff answer is yes.
1023 Takes three args which are given to printf to print the question.
1024 The first, a control string, should end in "? ".
1025 It should not say how to answer, because we do that. */
1029 #ifdef ANSI_PROTOTYPES
1030 query (char *ctlstr, ...)
1037 register int answer;
1041 #ifdef ANSI_PROTOTYPES
1042 va_start (args, ctlstr);
1046 ctlstr = va_arg (args, char *);
1051 return query_hook (ctlstr, args);
1054 /* Automatically answer "yes" if input is not from a terminal. */
1055 if (!input_from_terminal_p ())
1058 /* FIXME Automatically answer "yes" if called from MacGDB. */
1065 wrap_here (""); /* Flush any buffered output */
1066 gdb_flush (gdb_stdout);
1068 if (annotation_level > 1)
1069 printf_filtered ("\n\032\032pre-query\n");
1071 vfprintf_filtered (gdb_stdout, ctlstr, args);
1072 printf_filtered ("(y or n) ");
1074 if (annotation_level > 1)
1075 printf_filtered ("\n\032\032query\n");
1078 /* If not in MacGDB, move to a new line so the entered line doesn't
1079 have a prompt on the front of it. */
1081 fputs_unfiltered ("\n", gdb_stdout);
1085 gdb_flush (gdb_stdout);
1088 if (!tui_version || cmdWin == tuiWinWithFocus())
1090 answer = fgetc (stdin);
1094 answer = (unsigned char)tuiBufferGetc();
1097 clearerr (stdin); /* in case of C-d */
1098 if (answer == EOF) /* C-d */
1103 /* Eat rest of input line, to EOF or newline */
1104 if ((answer != '\n') || (tui_version && answer != '\r'))
1108 if (!tui_version || cmdWin == tuiWinWithFocus())
1110 ans2 = fgetc (stdin);
1114 ans2 = (unsigned char)tuiBufferGetc();
1118 while (ans2 != EOF && ans2 != '\n' && ans2 != '\r');
1119 TUIDO(((TuiOpaqueFuncPtr)tui_vStartNewLines, 1));
1133 printf_filtered ("Please answer y or n.\n");
1136 if (annotation_level > 1)
1137 printf_filtered ("\n\032\032post-query\n");
1142 /* Parse a C escape sequence. STRING_PTR points to a variable
1143 containing a pointer to the string to parse. That pointer
1144 should point to the character after the \. That pointer
1145 is updated past the characters we use. The value of the
1146 escape sequence is returned.
1148 A negative value means the sequence \ newline was seen,
1149 which is supposed to be equivalent to nothing at all.
1151 If \ is followed by a null character, we return a negative
1152 value and leave the string pointer pointing at the null character.
1154 If \ is followed by 000, we return 0 and leave the string pointer
1155 after the zeros. A value of 0 does not mean end of string. */
1158 parse_escape (string_ptr)
1161 register int c = *(*string_ptr)++;
1165 return 007; /* Bell (alert) char */
1168 case 'e': /* Escape character */
1186 c = *(*string_ptr)++;
1188 c = parse_escape (string_ptr);
1191 return (c & 0200) | (c & 037);
1202 register int i = c - '0';
1203 register int count = 0;
1206 if ((c = *(*string_ptr)++) >= '0' && c <= '7')
1224 /* Print the character C on STREAM as part of the contents of a literal
1225 string whose delimiter is QUOTER. Note that this routine should only
1226 be call for printing things which are independent of the language
1227 of the program being debugged. */
1230 gdb_printchar (c, stream, quoter)
1236 c &= 0xFF; /* Avoid sign bit follies */
1238 if ( c < 0x20 || /* Low control chars */
1239 (c >= 0x7F && c < 0xA0) || /* DEL, High controls */
1240 (sevenbit_strings && c >= 0x80)) { /* high order bit set */
1244 fputs_filtered ("\\n", stream);
1247 fputs_filtered ("\\b", stream);
1250 fputs_filtered ("\\t", stream);
1253 fputs_filtered ("\\f", stream);
1256 fputs_filtered ("\\r", stream);
1259 fputs_filtered ("\\e", stream);
1262 fputs_filtered ("\\a", stream);
1265 fprintf_filtered (stream, "\\%.3o", (unsigned int) c);
1269 if (c == '\\' || c == quoter)
1270 fputs_filtered ("\\", stream);
1271 fprintf_filtered (stream, "%c", c);
1278 static char * hexlate = "0123456789abcdef" ;
1279 int fmthex(inbuf,outbuff,length,linelength)
1280 unsigned char * inbuf ;
1281 unsigned char * outbuff;
1285 unsigned char byte , nib ;
1290 if (outlength >= linelength) break ;
1294 *outbuff++ = hexlate[nib] ;
1296 *outbuff++ = hexlate[nib] ;
1301 *outbuff = '\0' ; /* null terminate our output line */
1306 /* Number of lines per page or UINT_MAX if paging is disabled. */
1307 static unsigned int lines_per_page;
1308 /* Number of chars per line or UNIT_MAX is line folding is disabled. */
1309 static unsigned int chars_per_line;
1310 /* Current count of lines printed on this page, chars on this line. */
1311 static unsigned int lines_printed, chars_printed;
1313 /* Buffer and start column of buffered text, for doing smarter word-
1314 wrapping. When someone calls wrap_here(), we start buffering output
1315 that comes through fputs_filtered(). If we see a newline, we just
1316 spit it out and forget about the wrap_here(). If we see another
1317 wrap_here(), we spit it out and remember the newer one. If we see
1318 the end of the line, we spit out a newline, the indent, and then
1319 the buffered output. */
1321 /* Malloc'd buffer with chars_per_line+2 bytes. Contains characters which
1322 are waiting to be output (they have already been counted in chars_printed).
1323 When wrap_buffer[0] is null, the buffer is empty. */
1324 static char *wrap_buffer;
1326 /* Pointer in wrap_buffer to the next character to fill. */
1327 static char *wrap_pointer;
1329 /* String to indent by if the wrap occurs. Must not be NULL if wrap_column
1331 static char *wrap_indent;
1333 /* Column number on the screen where wrap_buffer begins, or 0 if wrapping
1334 is not in effect. */
1335 static int wrap_column;
1338 /* Inialize the lines and chars per page */
1343 if (tui_version && m_winPtrNotNull(cmdWin))
1345 lines_per_page = cmdWin->generic.height;
1346 chars_per_line = cmdWin->generic.width;
1351 /* These defaults will be used if we are unable to get the correct
1352 values from termcap. */
1353 #if defined(__GO32__)
1354 lines_per_page = ScreenRows();
1355 chars_per_line = ScreenCols();
1357 lines_per_page = 24;
1358 chars_per_line = 80;
1360 #if !defined (MPW) && !defined (_WIN32)
1361 /* No termcap under MPW, although might be cool to do something
1362 by looking at worksheet or console window sizes. */
1363 /* Initialize the screen height and width from termcap. */
1365 char *termtype = getenv ("TERM");
1367 /* Positive means success, nonpositive means failure. */
1370 /* 2048 is large enough for all known terminals, according to the
1371 GNU termcap manual. */
1372 char term_buffer[2048];
1376 status = tgetent (term_buffer, termtype);
1380 int running_in_emacs = getenv ("EMACS") != NULL;
1382 val = tgetnum ("li");
1383 if (val >= 0 && !running_in_emacs)
1384 lines_per_page = val;
1386 /* The number of lines per page is not mentioned
1387 in the terminal description. This probably means
1388 that paging is not useful (e.g. emacs shell window),
1389 so disable paging. */
1390 lines_per_page = UINT_MAX;
1392 val = tgetnum ("co");
1394 chars_per_line = val;
1400 #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER)
1402 /* If there is a better way to determine the window size, use it. */
1403 SIGWINCH_HANDLER (SIGWINCH);
1406 /* If the output is not a terminal, don't paginate it. */
1407 if (!GDB_FILE_ISATTY (gdb_stdout))
1408 lines_per_page = UINT_MAX;
1409 } /* the command_line_version */
1416 if (chars_per_line == 0)
1421 wrap_buffer = (char *) xmalloc (chars_per_line + 2);
1422 wrap_buffer[0] = '\0';
1425 wrap_buffer = (char *) xrealloc (wrap_buffer, chars_per_line + 2);
1426 wrap_pointer = wrap_buffer; /* Start it at the beginning */
1431 set_width_command (args, from_tty, c)
1434 struct cmd_list_element *c;
1439 /* Wait, so the user can read what's on the screen. Prompt the user
1440 to continue by pressing RETURN. */
1443 prompt_for_continue ()
1446 char cont_prompt[120];
1448 if (annotation_level > 1)
1449 printf_unfiltered ("\n\032\032pre-prompt-for-continue\n");
1451 strcpy (cont_prompt,
1452 "---Type <return> to continue, or q <return> to quit---");
1453 if (annotation_level > 1)
1454 strcat (cont_prompt, "\n\032\032prompt-for-continue\n");
1456 /* We must do this *before* we call gdb_readline, else it will eventually
1457 call us -- thinking that we're trying to print beyond the end of the
1459 reinitialize_more_filter ();
1462 /* On a real operating system, the user can quit with SIGINT.
1465 'q' is provided on all systems so users don't have to change habits
1466 from system to system, and because telling them what to do in
1467 the prompt is more user-friendly than expecting them to think of
1469 /* Call readline, not gdb_readline, because GO32 readline handles control-C
1470 whereas control-C to gdb_readline will cause the user to get dumped
1472 ignore = readline (cont_prompt);
1474 if (annotation_level > 1)
1475 printf_unfiltered ("\n\032\032post-prompt-for-continue\n");
1480 while (*p == ' ' || *p == '\t')
1483 request_quit (SIGINT);
1488 /* Now we have to do this again, so that GDB will know that it doesn't
1489 need to save the ---Type <return>--- line at the top of the screen. */
1490 reinitialize_more_filter ();
1492 dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */
1495 /* Reinitialize filter; ie. tell it to reset to original values. */
1498 reinitialize_more_filter ()
1504 /* Indicate that if the next sequence of characters overflows the line,
1505 a newline should be inserted here rather than when it hits the end.
1506 If INDENT is non-null, it is a string to be printed to indent the
1507 wrapped part on the next line. INDENT must remain accessible until
1508 the next call to wrap_here() or until a newline is printed through
1511 If the line is already overfull, we immediately print a newline and
1512 the indentation, and disable further wrapping.
1514 If we don't know the width of lines, but we know the page height,
1515 we must not wrap words, but should still keep track of newlines
1516 that were explicitly printed.
1518 INDENT should not contain tabs, as that will mess up the char count
1519 on the next line. FIXME.
1521 This routine is guaranteed to force out any output which has been
1522 squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be
1523 used to force out output from the wrap_buffer. */
1529 /* This should have been allocated, but be paranoid anyway. */
1535 *wrap_pointer = '\0';
1536 fputs_unfiltered (wrap_buffer, gdb_stdout);
1538 wrap_pointer = wrap_buffer;
1539 wrap_buffer[0] = '\0';
1540 if (chars_per_line == UINT_MAX) /* No line overflow checking */
1544 else if (chars_printed >= chars_per_line)
1546 puts_filtered ("\n");
1548 puts_filtered (indent);
1553 wrap_column = chars_printed;
1557 wrap_indent = indent;
1561 /* Ensure that whatever gets printed next, using the filtered output
1562 commands, starts at the beginning of the line. I.E. if there is
1563 any pending output for the current line, flush it and start a new
1564 line. Otherwise do nothing. */
1569 if (chars_printed > 0)
1571 puts_filtered ("\n");
1576 gdb_file_isatty (stream)
1580 if (stream->ts_streamtype == afile)
1581 return (isatty(fileno(stream->ts_filestream)));
1586 gdb_file_init_astring (n)
1589 GDB_FILE *tmpstream;
1591 tmpstream = xmalloc (sizeof(GDB_FILE));
1592 tmpstream->ts_streamtype = astring;
1593 tmpstream->ts_filestream = NULL;
1596 tmpstream->ts_strbuf = xmalloc ((n + 1)*sizeof(char));
1597 tmpstream->ts_strbuf[0] = '\0';
1600 tmpstream->ts_strbuf = NULL;
1601 tmpstream->ts_buflen = n;
1607 gdb_file_deallocate (streamptr)
1608 GDB_FILE **streamptr;
1610 GDB_FILE *tmpstream;
1612 tmpstream = *streamptr;
1613 if ((tmpstream->ts_streamtype == astring) &&
1614 (tmpstream->ts_strbuf != NULL))
1616 free (tmpstream->ts_strbuf);
1624 gdb_file_get_strbuf (stream)
1627 return (stream->ts_strbuf);
1630 /* adjust the length of the buffer by the amount necessary
1631 to accomodate appending a string of length N to the buffer contents */
1633 gdb_file_adjust_strbuf (n, stream)
1639 non_null_chars = strlen(stream->ts_strbuf);
1641 if (n > (stream->ts_buflen - non_null_chars - 1))
1643 stream->ts_buflen = n + non_null_chars + 1;
1644 stream->ts_strbuf = xrealloc (stream->ts_strbuf, stream->ts_buflen);
1649 gdb_fopen (name, mode)
1656 gdb_file_size = sizeof(GDB_FILE);
1657 tmp = (GDB_FILE *) xmalloc (gdb_file_size);
1658 tmp->ts_streamtype = afile;
1659 tmp->ts_filestream = fopen (name, mode);
1660 tmp->ts_strbuf = NULL;
1671 && (stream == gdb_stdout
1672 || stream == gdb_stderr))
1674 flush_hook (stream);
1678 fflush (stream->ts_filestream);
1682 gdb_fclose(streamptr)
1683 GDB_FILE **streamptr;
1685 GDB_FILE *tmpstream;
1687 tmpstream = *streamptr;
1688 fclose (tmpstream->ts_filestream);
1689 gdb_file_deallocate (streamptr);
1692 /* Like fputs but if FILTER is true, pause after every screenful.
1694 Regardless of FILTER can wrap at points other than the final
1695 character of a line.
1697 Unlike fputs, fputs_maybe_filtered does not return a value.
1698 It is OK for LINEBUFFER to be NULL, in which case just don't print
1701 Note that a longjmp to top level may occur in this routine (only if
1702 FILTER is true) (since prompt_for_continue may do so) so this
1703 routine should not be called when cleanups are not in place. */
1706 fputs_maybe_filtered (linebuffer, stream, filter)
1707 const char *linebuffer;
1711 const char *lineptr;
1713 if (linebuffer == 0)
1716 /* Don't do any filtering if it is disabled. */
1717 if (stream != gdb_stdout
1718 || (lines_per_page == UINT_MAX && chars_per_line == UINT_MAX))
1720 fputs_unfiltered (linebuffer, stream);
1724 /* Go through and output each character. Show line extension
1725 when this is necessary; prompt user for new page when this is
1728 lineptr = linebuffer;
1731 /* Possible new page. */
1733 (lines_printed >= lines_per_page - 1))
1734 prompt_for_continue ();
1736 while (*lineptr && *lineptr != '\n')
1738 /* Print a single line. */
1739 if (*lineptr == '\t')
1742 *wrap_pointer++ = '\t';
1744 fputc_unfiltered ('\t', stream);
1745 /* Shifting right by 3 produces the number of tab stops
1746 we have already passed, and then adding one and
1747 shifting left 3 advances to the next tab stop. */
1748 chars_printed = ((chars_printed >> 3) + 1) << 3;
1754 *wrap_pointer++ = *lineptr;
1756 fputc_unfiltered (*lineptr, stream);
1761 if (chars_printed >= chars_per_line)
1763 unsigned int save_chars = chars_printed;
1767 /* If we aren't actually wrapping, don't output newline --
1768 if chars_per_line is right, we probably just overflowed
1769 anyway; if it's wrong, let us keep going. */
1771 fputc_unfiltered ('\n', stream);
1773 /* Possible new page. */
1774 if (lines_printed >= lines_per_page - 1)
1775 prompt_for_continue ();
1777 /* Now output indentation and wrapped string */
1780 fputs_unfiltered (wrap_indent, stream);
1781 *wrap_pointer = '\0'; /* Null-terminate saved stuff */
1782 fputs_unfiltered (wrap_buffer, stream); /* and eject it */
1783 /* FIXME, this strlen is what prevents wrap_indent from
1784 containing tabs. However, if we recurse to print it
1785 and count its chars, we risk trouble if wrap_indent is
1786 longer than (the user settable) chars_per_line.
1787 Note also that this can set chars_printed > chars_per_line
1788 if we are printing a long string. */
1789 chars_printed = strlen (wrap_indent)
1790 + (save_chars - wrap_column);
1791 wrap_pointer = wrap_buffer; /* Reset buffer */
1792 wrap_buffer[0] = '\0';
1793 wrap_column = 0; /* And disable fancy wrap */
1798 if (*lineptr == '\n')
1801 wrap_here ((char *)0); /* Spit out chars, cancel further wraps */
1803 fputc_unfiltered ('\n', stream);
1810 fputs_filtered (linebuffer, stream)
1811 const char *linebuffer;
1814 fputs_maybe_filtered (linebuffer, stream, 1);
1818 putchar_unfiltered (c)
1825 fputs_unfiltered (buf, gdb_stdout);
1830 fputc_unfiltered (c, stream)
1838 fputs_unfiltered (buf, stream);
1843 fputc_filtered (c, stream)
1851 fputs_filtered (buf, stream);
1855 /* puts_debug is like fputs_unfiltered, except it prints special
1856 characters in printable fashion. */
1859 puts_debug (prefix, string, suffix)
1866 /* Print prefix and suffix after each line. */
1867 static int new_line = 1;
1868 static int return_p = 0;
1869 static char *prev_prefix = "";
1870 static char *prev_suffix = "";
1872 if (*string == '\n')
1875 /* If the prefix is changing, print the previous suffix, a new line,
1876 and the new prefix. */
1877 if ((return_p || (strcmp(prev_prefix, prefix) != 0)) && !new_line)
1879 fputs_unfiltered (prev_suffix, gdb_stderr);
1880 fputs_unfiltered ("\n", gdb_stderr);
1881 fputs_unfiltered (prefix, gdb_stderr);
1884 /* Print prefix if we printed a newline during the previous call. */
1888 fputs_unfiltered (prefix, gdb_stderr);
1891 prev_prefix = prefix;
1892 prev_suffix = suffix;
1894 /* Output characters in a printable format. */
1895 while ((ch = *string++) != '\0')
1901 fputc_unfiltered (ch, gdb_stderr);
1904 fprintf_unfiltered (gdb_stderr, "\\x%02x", ch & 0xff);
1907 case '\\': fputs_unfiltered ("\\\\", gdb_stderr); break;
1908 case '\b': fputs_unfiltered ("\\b", gdb_stderr); break;
1909 case '\f': fputs_unfiltered ("\\f", gdb_stderr); break;
1910 case '\n': new_line = 1;
1911 fputs_unfiltered ("\\n", gdb_stderr); break;
1912 case '\r': fputs_unfiltered ("\\r", gdb_stderr); break;
1913 case '\t': fputs_unfiltered ("\\t", gdb_stderr); break;
1914 case '\v': fputs_unfiltered ("\\v", gdb_stderr); break;
1917 return_p = ch == '\r';
1920 /* Print suffix if we printed a newline. */
1923 fputs_unfiltered (suffix, gdb_stderr);
1924 fputs_unfiltered ("\n", gdb_stderr);
1929 /* Print a variable number of ARGS using format FORMAT. If this
1930 information is going to put the amount written (since the last call
1931 to REINITIALIZE_MORE_FILTER or the last page break) over the page size,
1932 call prompt_for_continue to get the users permision to continue.
1934 Unlike fprintf, this function does not return a value.
1936 We implement three variants, vfprintf (takes a vararg list and stream),
1937 fprintf (takes a stream to write on), and printf (the usual).
1939 Note also that a longjmp to top level may occur in this routine
1940 (since prompt_for_continue may do so) so this routine should not be
1941 called when cleanups are not in place. */
1944 vfprintf_maybe_filtered (stream, format, args, filter)
1951 struct cleanup *old_cleanups;
1953 vasprintf (&linebuffer, format, args);
1954 if (linebuffer == NULL)
1956 fputs_unfiltered ("\ngdb: virtual memory exhausted.\n", gdb_stderr);
1959 old_cleanups = make_cleanup (free, linebuffer);
1960 fputs_maybe_filtered (linebuffer, stream, filter);
1961 do_cleanups (old_cleanups);
1966 vfprintf_filtered (stream, format, args)
1971 vfprintf_maybe_filtered (stream, format, args, 1);
1975 vfprintf_unfiltered (stream, format, args)
1981 struct cleanup *old_cleanups;
1983 vasprintf (&linebuffer, format, args);
1984 if (linebuffer == NULL)
1986 fputs_unfiltered ("\ngdb: virtual memory exhausted.\n", gdb_stderr);
1989 old_cleanups = make_cleanup (free, linebuffer);
1990 fputs_unfiltered (linebuffer, stream);
1991 do_cleanups (old_cleanups);
1995 vprintf_filtered (format, args)
1999 vfprintf_maybe_filtered (gdb_stdout, format, args, 1);
2003 vprintf_unfiltered (format, args)
2007 vfprintf_unfiltered (gdb_stdout, format, args);
2012 #ifdef ANSI_PROTOTYPES
2013 fprintf_filtered (GDB_FILE *stream, const char *format, ...)
2015 fprintf_filtered (va_alist)
2020 #ifdef ANSI_PROTOTYPES
2021 va_start (args, format);
2027 stream = va_arg (args, GDB_FILE *);
2028 format = va_arg (args, char *);
2030 vfprintf_filtered (stream, format, args);
2036 #ifdef ANSI_PROTOTYPES
2037 fprintf_unfiltered (GDB_FILE *stream, const char *format, ...)
2039 fprintf_unfiltered (va_alist)
2044 #ifdef ANSI_PROTOTYPES
2045 va_start (args, format);
2051 stream = va_arg (args, GDB_FILE *);
2052 format = va_arg (args, char *);
2054 vfprintf_unfiltered (stream, format, args);
2058 /* Like fprintf_filtered, but prints its result indented.
2059 Called as fprintfi_filtered (spaces, stream, format, ...); */
2063 #ifdef ANSI_PROTOTYPES
2064 fprintfi_filtered (int spaces, GDB_FILE *stream, const char *format, ...)
2066 fprintfi_filtered (va_alist)
2071 #ifdef ANSI_PROTOTYPES
2072 va_start (args, format);
2079 spaces = va_arg (args, int);
2080 stream = va_arg (args, GDB_FILE *);
2081 format = va_arg (args, char *);
2083 print_spaces_filtered (spaces, stream);
2085 vfprintf_filtered (stream, format, args);
2092 #ifdef ANSI_PROTOTYPES
2093 printf_filtered (const char *format, ...)
2095 printf_filtered (va_alist)
2100 #ifdef ANSI_PROTOTYPES
2101 va_start (args, format);
2106 format = va_arg (args, char *);
2108 vfprintf_filtered (gdb_stdout, format, args);
2115 #ifdef ANSI_PROTOTYPES
2116 printf_unfiltered (const char *format, ...)
2118 printf_unfiltered (va_alist)
2123 #ifdef ANSI_PROTOTYPES
2124 va_start (args, format);
2129 format = va_arg (args, char *);
2131 vfprintf_unfiltered (gdb_stdout, format, args);
2135 /* Like printf_filtered, but prints it's result indented.
2136 Called as printfi_filtered (spaces, format, ...); */
2140 #ifdef ANSI_PROTOTYPES
2141 printfi_filtered (int spaces, const char *format, ...)
2143 printfi_filtered (va_alist)
2148 #ifdef ANSI_PROTOTYPES
2149 va_start (args, format);
2155 spaces = va_arg (args, int);
2156 format = va_arg (args, char *);
2158 print_spaces_filtered (spaces, gdb_stdout);
2159 vfprintf_filtered (gdb_stdout, format, args);
2163 /* Easy -- but watch out!
2165 This routine is *not* a replacement for puts()! puts() appends a newline.
2166 This one doesn't, and had better not! */
2169 puts_filtered (string)
2172 fputs_filtered (string, gdb_stdout);
2176 puts_unfiltered (string)
2179 fputs_unfiltered (string, gdb_stdout);
2182 /* Return a pointer to N spaces and a null. The pointer is good
2183 until the next call to here. */
2189 static char *spaces;
2190 static int max_spaces;
2196 spaces = (char *) xmalloc (n+1);
2197 for (t = spaces+n; t != spaces;)
2203 return spaces + max_spaces - n;
2206 /* Print N spaces. */
2208 print_spaces_filtered (n, stream)
2212 fputs_filtered (n_spaces (n), stream);
2215 /* C++ demangler stuff. */
2217 /* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language
2218 LANG, using demangling args ARG_MODE, and print it filtered to STREAM.
2219 If the name is not mangled, or the language for the name is unknown, or
2220 demangling is off, the name is printed in its "raw" form. */
2223 fprintf_symbol_filtered (stream, name, lang, arg_mode)
2233 /* If user wants to see raw output, no problem. */
2236 fputs_filtered (name, stream);
2242 case language_cplus:
2243 demangled = cplus_demangle (name, arg_mode);
2246 demangled = cplus_demangle (name, arg_mode | DMGL_JAVA);
2248 case language_chill:
2249 demangled = chill_demangle (name);
2255 fputs_filtered (demangled ? demangled : name, stream);
2256 if (demangled != NULL)
2264 /* Do a strcmp() type operation on STRING1 and STRING2, ignoring any
2265 differences in whitespace. Returns 0 if they match, non-zero if they
2266 don't (slightly different than strcmp()'s range of return values).
2268 As an extra hack, string1=="FOO(ARGS)" matches string2=="FOO".
2269 This "feature" is useful when searching for matching C++ function names
2270 (such as if the user types 'break FOO', where FOO is a mangled C++
2274 strcmp_iw (string1, string2)
2275 const char *string1;
2276 const char *string2;
2278 while ((*string1 != '\0') && (*string2 != '\0'))
2280 while (isspace (*string1))
2284 while (isspace (*string2))
2288 if (*string1 != *string2)
2292 if (*string1 != '\0')
2298 return (*string1 != '\0' && *string1 != '(') || (*string2 != '\0');
2304 ** Answer whether stringToCompare is a full or partial match to
2305 ** templateString. The partial match must be in sequence starting
2311 char *stringToCompare,
2312 char *templateString)
2314 subsetCompare(stringToCompare, templateString)
2315 char *stringToCompare;
2316 char *templateString;
2321 if (templateString != (char *)NULL && stringToCompare != (char *)NULL &&
2322 strlen(stringToCompare) <= strlen(templateString))
2323 match = (strncmp(templateString,
2325 strlen(stringToCompare)) == 0);
2328 } /* subsetCompare */
2331 void pagination_on_command(arg, from_tty)
2335 pagination_enabled = 1;
2338 void pagination_off_command(arg, from_tty)
2342 pagination_enabled = 0;
2349 struct cmd_list_element *c;
2351 c = add_set_cmd ("width", class_support, var_uinteger,
2352 (char *)&chars_per_line,
2353 "Set number of characters gdb thinks are in a line.",
2355 add_show_from_set (c, &showlist);
2356 c->function.sfunc = set_width_command;
2359 (add_set_cmd ("height", class_support,
2360 var_uinteger, (char *)&lines_per_page,
2361 "Set number of lines gdb thinks are in a page.", &setlist),
2366 /* If the output is not a terminal, don't paginate it. */
2367 if (!GDB_FILE_ISATTY (gdb_stdout))
2368 lines_per_page = UINT_MAX;
2370 set_width_command ((char *)NULL, 0, c);
2373 (add_set_cmd ("demangle", class_support, var_boolean,
2375 "Set demangling of encoded C++ names when displaying symbols.",
2380 (add_set_cmd ("pagination", class_support,
2381 var_boolean, (char *)&pagination_enabled,
2382 "Set state of pagination.", &setlist),
2386 add_com("am", class_support, pagination_on_command,
2387 "Enable pagination");
2388 add_com("sm", class_support, pagination_off_command,
2389 "Disable pagination");
2393 (add_set_cmd ("sevenbit-strings", class_support, var_boolean,
2394 (char *)&sevenbit_strings,
2395 "Set printing of 8-bit characters in strings as \\nnn.",
2400 (add_set_cmd ("asm-demangle", class_support, var_boolean,
2401 (char *)&asm_demangle,
2402 "Set demangling of C++ names in disassembly listings.",
2407 /* Machine specific function to handle SIGWINCH signal. */
2409 #ifdef SIGWINCH_HANDLER_BODY
2410 SIGWINCH_HANDLER_BODY
2413 /* Support for converting target fp numbers into host DOUBLEST format. */
2415 /* XXX - This code should really be in libiberty/floatformat.c, however
2416 configuration issues with libiberty made this very difficult to do in the
2419 #include "floatformat.h"
2420 #include <math.h> /* ldexp */
2422 /* The odds that CHAR_BIT will be anything but 8 are low enough that I'm not
2423 going to bother with trying to muck around with whether it is defined in
2424 a system header, what we do if not, etc. */
2425 #define FLOATFORMAT_CHAR_BIT 8
2427 static unsigned long get_field PARAMS ((unsigned char *,
2428 enum floatformat_byteorders,
2433 /* Extract a field which starts at START and is LEN bytes long. DATA and
2434 TOTAL_LEN are the thing we are extracting it from, in byteorder ORDER. */
2435 static unsigned long
2436 get_field (data, order, total_len, start, len)
2437 unsigned char *data;
2438 enum floatformat_byteorders order;
2439 unsigned int total_len;
2443 unsigned long result;
2444 unsigned int cur_byte;
2447 /* Start at the least significant part of the field. */
2448 cur_byte = (start + len) / FLOATFORMAT_CHAR_BIT;
2449 if (order == floatformat_little || order == floatformat_littlebyte_bigword)
2450 cur_byte = (total_len / FLOATFORMAT_CHAR_BIT) - cur_byte - 1;
2452 ((start + len) % FLOATFORMAT_CHAR_BIT) - FLOATFORMAT_CHAR_BIT;
2453 result = *(data + cur_byte) >> (-cur_bitshift);
2454 cur_bitshift += FLOATFORMAT_CHAR_BIT;
2455 if (order == floatformat_little || order == floatformat_littlebyte_bigword)
2460 /* Move towards the most significant part of the field. */
2461 while (cur_bitshift < len)
2463 if (len - cur_bitshift < FLOATFORMAT_CHAR_BIT)
2464 /* This is the last byte; zero out the bits which are not part of
2467 (*(data + cur_byte) & ((1 << (len - cur_bitshift)) - 1))
2470 result |= *(data + cur_byte) << cur_bitshift;
2471 cur_bitshift += FLOATFORMAT_CHAR_BIT;
2472 if (order == floatformat_little || order == floatformat_littlebyte_bigword)
2480 /* Convert from FMT to a DOUBLEST.
2481 FROM is the address of the extended float.
2482 Store the DOUBLEST in *TO. */
2485 floatformat_to_doublest (fmt, from, to)
2486 const struct floatformat *fmt;
2490 unsigned char *ufrom = (unsigned char *)from;
2494 unsigned int mant_bits, mant_off;
2496 int special_exponent; /* It's a NaN, denorm or zero */
2498 /* If the mantissa bits are not contiguous from one end of the
2499 mantissa to the other, we need to make a private copy of the
2500 source bytes that is in the right order since the unpacking
2501 algorithm assumes that the bits are contiguous.
2503 Swap the bytes individually rather than accessing them through
2504 "long *" since we have no guarantee that they start on a long
2505 alignment, and also sizeof(long) for the host could be different
2506 than sizeof(long) for the target. FIXME: Assumes sizeof(long)
2507 for the target is 4. */
2509 if (fmt -> byteorder == floatformat_littlebyte_bigword)
2511 static unsigned char *newfrom;
2512 unsigned char *swapin, *swapout;
2515 longswaps = fmt -> totalsize / FLOATFORMAT_CHAR_BIT;
2518 if (newfrom == NULL)
2520 newfrom = (unsigned char *) xmalloc (fmt -> totalsize);
2525 while (longswaps-- > 0)
2527 /* This is ugly, but efficient */
2528 *swapout++ = swapin[4];
2529 *swapout++ = swapin[5];
2530 *swapout++ = swapin[6];
2531 *swapout++ = swapin[7];
2532 *swapout++ = swapin[0];
2533 *swapout++ = swapin[1];
2534 *swapout++ = swapin[2];
2535 *swapout++ = swapin[3];
2540 exponent = get_field (ufrom, fmt->byteorder, fmt->totalsize,
2541 fmt->exp_start, fmt->exp_len);
2542 /* Note that if exponent indicates a NaN, we can't really do anything useful
2543 (not knowing if the host has NaN's, or how to build one). So it will
2544 end up as an infinity or something close; that is OK. */
2546 mant_bits_left = fmt->man_len;
2547 mant_off = fmt->man_start;
2550 special_exponent = exponent == 0 || exponent == fmt->exp_nan;
2552 /* Don't bias zero's, denorms or NaNs. */
2553 if (!special_exponent)
2554 exponent -= fmt->exp_bias;
2556 /* Build the result algebraically. Might go infinite, underflow, etc;
2559 /* If this format uses a hidden bit, explicitly add it in now. Otherwise,
2560 increment the exponent by one to account for the integer bit. */
2562 if (!special_exponent)
2563 if (fmt->intbit == floatformat_intbit_no)
2564 dto = ldexp (1.0, exponent);
2568 while (mant_bits_left > 0)
2570 mant_bits = min (mant_bits_left, 32);
2572 mant = get_field (ufrom, fmt->byteorder, fmt->totalsize,
2573 mant_off, mant_bits);
2575 dto += ldexp ((double)mant, exponent - mant_bits);
2576 exponent -= mant_bits;
2577 mant_off += mant_bits;
2578 mant_bits_left -= mant_bits;
2581 /* Negate it if negative. */
2582 if (get_field (ufrom, fmt->byteorder, fmt->totalsize, fmt->sign_start, 1))
2587 static void put_field PARAMS ((unsigned char *, enum floatformat_byteorders,
2593 /* Set a field which starts at START and is LEN bytes long. DATA and
2594 TOTAL_LEN are the thing we are extracting it from, in byteorder ORDER. */
2596 put_field (data, order, total_len, start, len, stuff_to_put)
2597 unsigned char *data;
2598 enum floatformat_byteorders order;
2599 unsigned int total_len;
2602 unsigned long stuff_to_put;
2604 unsigned int cur_byte;
2607 /* Start at the least significant part of the field. */
2608 cur_byte = (start + len) / FLOATFORMAT_CHAR_BIT;
2609 if (order == floatformat_little || order == floatformat_littlebyte_bigword)
2610 cur_byte = (total_len / FLOATFORMAT_CHAR_BIT) - cur_byte - 1;
2612 ((start + len) % FLOATFORMAT_CHAR_BIT) - FLOATFORMAT_CHAR_BIT;
2613 *(data + cur_byte) &=
2614 ~(((1 << ((start + len) % FLOATFORMAT_CHAR_BIT)) - 1) << (-cur_bitshift));
2615 *(data + cur_byte) |=
2616 (stuff_to_put & ((1 << FLOATFORMAT_CHAR_BIT) - 1)) << (-cur_bitshift);
2617 cur_bitshift += FLOATFORMAT_CHAR_BIT;
2618 if (order == floatformat_little || order == floatformat_littlebyte_bigword)
2623 /* Move towards the most significant part of the field. */
2624 while (cur_bitshift < len)
2626 if (len - cur_bitshift < FLOATFORMAT_CHAR_BIT)
2628 /* This is the last byte. */
2629 *(data + cur_byte) &=
2630 ~((1 << (len - cur_bitshift)) - 1);
2631 *(data + cur_byte) |= (stuff_to_put >> cur_bitshift);
2634 *(data + cur_byte) = ((stuff_to_put >> cur_bitshift)
2635 & ((1 << FLOATFORMAT_CHAR_BIT) - 1));
2636 cur_bitshift += FLOATFORMAT_CHAR_BIT;
2637 if (order == floatformat_little || order == floatformat_littlebyte_bigword)
2644 #ifdef HAVE_LONG_DOUBLE
2645 /* Return the fractional part of VALUE, and put the exponent of VALUE in *EPTR.
2646 The range of the returned value is >= 0.5 and < 1.0. This is equivalent to
2647 frexp, but operates on the long double data type. */
2649 static long double ldfrexp PARAMS ((long double value, int *eptr));
2652 ldfrexp (value, eptr)
2659 /* Unfortunately, there are no portable functions for extracting the exponent
2660 of a long double, so we have to do it iteratively by multiplying or dividing
2661 by two until the fraction is between 0.5 and 1.0. */
2669 if (value >= tmp) /* Value >= 1.0 */
2670 while (value >= tmp)
2675 else if (value != 0.0l) /* Value < 1.0 and > 0.0 */
2689 #endif /* HAVE_LONG_DOUBLE */
2692 /* The converse: convert the DOUBLEST *FROM to an extended float
2693 and store where TO points. Neither FROM nor TO have any alignment
2697 floatformat_from_doublest (fmt, from, to)
2698 CONST struct floatformat *fmt;
2705 unsigned int mant_bits, mant_off;
2707 unsigned char *uto = (unsigned char *)to;
2709 memcpy (&dfrom, from, sizeof (dfrom));
2710 memset (uto, 0, fmt->totalsize / FLOATFORMAT_CHAR_BIT);
2712 return; /* Result is zero */
2713 if (dfrom != dfrom) /* Result is NaN */
2716 put_field (uto, fmt->byteorder, fmt->totalsize, fmt->exp_start,
2717 fmt->exp_len, fmt->exp_nan);
2718 /* Be sure it's not infinity, but NaN value is irrel */
2719 put_field (uto, fmt->byteorder, fmt->totalsize, fmt->man_start,
2724 /* If negative, set the sign bit. */
2727 put_field (uto, fmt->byteorder, fmt->totalsize, fmt->sign_start, 1, 1);
2731 if (dfrom + dfrom == dfrom && dfrom != 0.0) /* Result is Infinity */
2733 /* Infinity exponent is same as NaN's. */
2734 put_field (uto, fmt->byteorder, fmt->totalsize, fmt->exp_start,
2735 fmt->exp_len, fmt->exp_nan);
2736 /* Infinity mantissa is all zeroes. */
2737 put_field (uto, fmt->byteorder, fmt->totalsize, fmt->man_start,
2742 #ifdef HAVE_LONG_DOUBLE
2743 mant = ldfrexp (dfrom, &exponent);
2745 mant = frexp (dfrom, &exponent);
2748 put_field (uto, fmt->byteorder, fmt->totalsize, fmt->exp_start, fmt->exp_len,
2749 exponent + fmt->exp_bias - 1);
2751 mant_bits_left = fmt->man_len;
2752 mant_off = fmt->man_start;
2753 while (mant_bits_left > 0)
2755 unsigned long mant_long;
2756 mant_bits = mant_bits_left < 32 ? mant_bits_left : 32;
2758 mant *= 4294967296.0;
2759 mant_long = (unsigned long)mant;
2762 /* If the integer bit is implicit, then we need to discard it.
2763 If we are discarding a zero, we should be (but are not) creating
2764 a denormalized number which means adjusting the exponent
2766 if (mant_bits_left == fmt->man_len
2767 && fmt->intbit == floatformat_intbit_no)
2775 /* The bits we want are in the most significant MANT_BITS bits of
2776 mant_long. Move them to the least significant. */
2777 mant_long >>= 32 - mant_bits;
2780 put_field (uto, fmt->byteorder, fmt->totalsize,
2781 mant_off, mant_bits, mant_long);
2782 mant_off += mant_bits;
2783 mant_bits_left -= mant_bits;
2785 if (fmt -> byteorder == floatformat_littlebyte_bigword)
2788 unsigned char *swaplow = uto;
2789 unsigned char *swaphigh = uto + 4;
2792 for (count = 0; count < 4; count++)
2795 *swaplow++ = *swaphigh;
2801 /* temporary storage using circular buffer */
2807 static char buf[NUMCELLS][CELLSIZE];
2809 if (++cell>=NUMCELLS) cell=0;
2813 /* print routines to handle variable size regs, etc.
2815 FIXME: Note that t_addr is a bfd_vma, which is currently either an
2816 unsigned long or unsigned long long, determined at configure time.
2817 If t_addr is an unsigned long long and sizeof (unsigned long long)
2818 is greater than sizeof (unsigned long), then I believe this code will
2819 probably lose, at least for little endian machines. I believe that
2820 it would also be better to eliminate the switch on the absolute size
2821 of t_addr and replace it with a sequence of if statements that compare
2822 sizeof t_addr with sizeof the various types and do the right thing,
2823 which includes knowing whether or not the host supports long long.
2828 static int thirty_two = 32; /* eliminate warning from compiler on 32-bit systems */
2834 char *paddr_str=get_cell();
2835 switch (sizeof(t_addr))
2838 sprintf (paddr_str, "%08lx%08lx",
2839 (unsigned long) (addr >> thirty_two), (unsigned long) (addr & 0xffffffff));
2842 sprintf (paddr_str, "%08lx", (unsigned long) addr);
2845 sprintf (paddr_str, "%04x", (unsigned short) (addr & 0xffff));
2848 sprintf (paddr_str, "%lx", (unsigned long) addr);
2857 char *preg_str=get_cell();
2858 switch (sizeof(t_reg))
2861 sprintf (preg_str, "%08lx%08lx",
2862 (unsigned long) (reg >> thirty_two), (unsigned long) (reg & 0xffffffff));
2865 sprintf (preg_str, "%08lx", (unsigned long) reg);
2868 sprintf (preg_str, "%04x", (unsigned short) (reg & 0xffff));
2871 sprintf (preg_str, "%lx", (unsigned long) reg);
2880 char *paddr_str=get_cell();
2881 switch (sizeof(t_addr))
2885 unsigned long high = (unsigned long) (addr >> thirty_two);
2887 sprintf (paddr_str, "%lx", (unsigned long) (addr & 0xffffffff));
2889 sprintf (paddr_str, "%lx%08lx",
2890 high, (unsigned long) (addr & 0xffffffff));
2894 sprintf (paddr_str, "%lx", (unsigned long) addr);
2897 sprintf (paddr_str, "%x", (unsigned short) (addr & 0xffff));
2900 sprintf (paddr_str,"%lx", (unsigned long) addr);
2909 char *preg_str=get_cell();
2910 switch (sizeof(t_reg))
2914 unsigned long high = (unsigned long) (reg >> thirty_two);
2916 sprintf (preg_str, "%lx", (unsigned long) (reg & 0xffffffff));
2918 sprintf (preg_str, "%lx%08lx",
2919 high, (unsigned long) (reg & 0xffffffff));
2923 sprintf (preg_str, "%lx", (unsigned long) reg);
2926 sprintf (preg_str, "%x", (unsigned short) (reg & 0xffff));
2929 sprintf (preg_str, "%lx", (unsigned long) reg);