1 /* General utility routines for GDB, the GNU debugger.
2 Copyright 1986, 89, 90, 91, 92, 95, 1996 Free Software Foundation, Inc.
4 This file is part of GDB.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
21 #ifdef ANSI_PROTOTYPES
27 #include "gdb_string.h"
38 #include "expression.h"
44 /* readline defines this. */
47 /* Prototypes for local functions */
49 static void vfprintf_maybe_filtered PARAMS ((FILE *, const char *, va_list, int));
51 static void fputs_maybe_filtered PARAMS ((const char *, FILE *, int));
53 #if !defined (NO_MMALLOC) && !defined (NO_MMCHECK)
54 static void malloc_botch PARAMS ((void));
58 fatal_dump_core PARAMS((char *, ...));
61 prompt_for_continue PARAMS ((void));
64 set_width_command PARAMS ((char *, int, struct cmd_list_element *));
66 /* If this definition isn't overridden by the header files, assume
67 that isatty and fileno exist on this system. */
69 #define ISATTY(FP) (isatty (fileno (FP)))
72 /* Chain of cleanup actions established with make_cleanup,
73 to be executed if an error happens. */
75 static struct cleanup *cleanup_chain; /* cleaned up after a failed command */
76 static struct cleanup *final_cleanup_chain; /* cleaned up when gdb exits */
78 /* Nonzero if we have job control. */
82 /* Nonzero means a quit has been requested. */
86 /* Nonzero means quit immediately if Control-C is typed now, rather
87 than waiting until QUIT is executed. Be careful in setting this;
88 code which executes with immediate_quit set has to be very careful
89 about being able to deal with being interrupted at any time. It is
90 almost always better to use QUIT; the only exception I can think of
91 is being able to quit out of a system call (using EINTR loses if
92 the SIGINT happens between the previous QUIT and the system call).
93 To immediately quit in the case in which a SIGINT happens between
94 the previous QUIT and setting immediate_quit (desirable anytime we
95 expect to block), call QUIT after setting immediate_quit. */
99 /* Nonzero means that encoded C++ names should be printed out in their
100 C++ form rather than raw. */
104 /* Nonzero means that encoded C++ names should be printed out in their
105 C++ form even in assembler language displays. If this is set, but
106 DEMANGLE is zero, names are printed raw, i.e. DEMANGLE controls. */
108 int asm_demangle = 0;
110 /* Nonzero means that strings with character values >0x7F should be printed
111 as octal escapes. Zero means just print the value (e.g. it's an
112 international character, and the terminal or window can cope.) */
114 int sevenbit_strings = 0;
116 /* String to be printed before error messages, if any. */
118 char *error_pre_print;
120 /* String to be printed before quit messages, if any. */
122 char *quit_pre_print;
124 /* String to be printed before warning messages, if any. */
126 char *warning_pre_print = "\nwarning: ";
128 /* Add a new cleanup to the cleanup_chain,
129 and return the previous chain pointer
130 to be passed later to do_cleanups or discard_cleanups.
131 Args are FUNCTION to clean up with, and ARG to pass to it. */
134 make_cleanup (function, arg)
135 void (*function) PARAMS ((PTR));
138 return make_my_cleanup (&cleanup_chain, function, arg);
142 make_final_cleanup (function, arg)
143 void (*function) PARAMS ((PTR));
146 return make_my_cleanup (&final_cleanup_chain, function, arg);
149 make_my_cleanup (pmy_chain, function, arg)
150 struct cleanup **pmy_chain;
151 void (*function) PARAMS ((PTR));
154 register struct cleanup *new
155 = (struct cleanup *) xmalloc (sizeof (struct cleanup));
156 register struct cleanup *old_chain = *pmy_chain;
158 new->next = *pmy_chain;
159 new->function = function;
166 /* Discard cleanups and do the actions they describe
167 until we get back to the point OLD_CHAIN in the cleanup_chain. */
170 do_cleanups (old_chain)
171 register struct cleanup *old_chain;
173 do_my_cleanups (&cleanup_chain, old_chain);
177 do_final_cleanups (old_chain)
178 register struct cleanup *old_chain;
180 do_my_cleanups (&final_cleanup_chain, old_chain);
184 do_my_cleanups (pmy_chain, old_chain)
185 register struct cleanup **pmy_chain;
186 register struct cleanup *old_chain;
188 register struct cleanup *ptr;
189 while ((ptr = *pmy_chain) != old_chain)
191 *pmy_chain = ptr->next; /* Do this first incase recursion */
192 (*ptr->function) (ptr->arg);
197 /* Discard cleanups, not doing the actions they describe,
198 until we get back to the point OLD_CHAIN in the cleanup_chain. */
201 discard_cleanups (old_chain)
202 register struct cleanup *old_chain;
204 discard_my_cleanups (&cleanup_chain, old_chain);
208 discard_final_cleanups (old_chain)
209 register struct cleanup *old_chain;
211 discard_my_cleanups (&final_cleanup_chain, old_chain);
215 discard_my_cleanups (pmy_chain, old_chain)
216 register struct cleanup **pmy_chain;
217 register struct cleanup *old_chain;
219 register struct cleanup *ptr;
220 while ((ptr = *pmy_chain) != old_chain)
222 *pmy_chain = ptr->next;
227 /* Set the cleanup_chain to 0, and return the old cleanup chain. */
231 return save_my_cleanups (&cleanup_chain);
235 save_final_cleanups ()
237 return save_my_cleanups (&final_cleanup_chain);
241 save_my_cleanups (pmy_chain)
242 struct cleanup **pmy_chain;
244 struct cleanup *old_chain = *pmy_chain;
250 /* Restore the cleanup chain from a previously saved chain. */
252 restore_cleanups (chain)
253 struct cleanup *chain;
255 restore_my_cleanups (&cleanup_chain, chain);
259 restore_final_cleanups (chain)
260 struct cleanup *chain;
262 restore_my_cleanups (&final_cleanup_chain, chain);
266 restore_my_cleanups (pmy_chain, chain)
267 struct cleanup **pmy_chain;
268 struct cleanup *chain;
273 /* This function is useful for cleanups.
277 old_chain = make_cleanup (free_current_contents, &foo);
279 to arrange to free the object thus allocated. */
282 free_current_contents (location)
288 /* Provide a known function that does nothing, to use as a base for
289 for a possibly long chain of cleanups. This is useful where we
290 use the cleanup chain for handling normal cleanups as well as dealing
291 with cleanups that need to be done as a result of a call to error().
292 In such cases, we may not be certain where the first cleanup is, unless
293 we have a do-nothing one to always use as the base. */
303 /* Print a warning message. Way to use this is to call warning_begin,
304 output the warning message (use unfiltered output to gdb_stderr),
305 ending in a newline. There is not currently a warning_end that you
306 call afterwards, but such a thing might be added if it is useful
307 for a GUI to separate warning messages from other output.
309 FIXME: Why do warnings use unfiltered output and errors filtered?
310 Is this anything other than a historical accident? */
315 target_terminal_ours ();
316 wrap_here(""); /* Force out any buffered output */
317 gdb_flush (gdb_stdout);
318 if (warning_pre_print)
319 fprintf_unfiltered (gdb_stderr, warning_pre_print);
322 /* Print a warning message.
323 The first argument STRING is the warning message, used as a fprintf string,
324 and the remaining args are passed as arguments to it.
325 The primary difference between warnings and errors is that a warning
326 does not force the return to command level. */
330 #ifdef ANSI_PROTOTYPES
331 warning (const char *string, ...)
338 #ifdef ANSI_PROTOTYPES
339 va_start (args, string);
344 string = va_arg (args, char *);
347 vfprintf_unfiltered (gdb_stderr, string, args);
348 fprintf_unfiltered (gdb_stderr, "\n");
352 /* Start the printing of an error message. Way to use this is to call
353 this, output the error message (use filtered output to gdb_stderr
354 (FIXME: Some callers, like memory_error, use gdb_stdout)), ending
355 in a newline, and then call return_to_top_level (RETURN_ERROR).
356 error() provides a convenient way to do this for the special case
357 that the error message can be formatted with a single printf call,
358 but this is more general. */
362 target_terminal_ours ();
363 wrap_here (""); /* Force out any buffered output */
364 gdb_flush (gdb_stdout);
366 annotate_error_begin ();
369 fprintf_filtered (gdb_stderr, error_pre_print);
372 /* Print an error message and return to command level.
373 The first argument STRING is the error message, used as a fprintf string,
374 and the remaining args are passed as arguments to it. */
378 #ifdef ANSI_PROTOTYPES
379 error (const char *string, ...)
387 #ifdef ANSI_PROTOTYPES
388 va_start (args, string);
397 #ifdef ANSI_PROTOTYPES
398 vfprintf_filtered (gdb_stderr, string, args);
403 string1 = va_arg (args, char *);
404 vfprintf_filtered (gdb_stderr, string1, args);
407 fprintf_filtered (gdb_stderr, "\n");
409 return_to_top_level (RETURN_ERROR);
414 /* Print an error message and exit reporting failure.
415 This is for a error that we cannot continue from.
416 The arguments are printed a la printf.
418 This function cannot be declared volatile (NORETURN) in an
419 ANSI environment because exit() is not declared volatile. */
423 #ifdef ANSI_PROTOTYPES
424 fatal (char *string, ...)
431 #ifdef ANSI_PROTOTYPES
432 va_start (args, string);
436 string = va_arg (args, char *);
438 fprintf_unfiltered (gdb_stderr, "\ngdb: ");
439 vfprintf_unfiltered (gdb_stderr, string, args);
440 fprintf_unfiltered (gdb_stderr, "\n");
445 /* Print an error message and exit, dumping core.
446 The arguments are printed a la printf (). */
450 #ifdef ANSI_PROTOTYPES
451 fatal_dump_core (char *string, ...)
453 fatal_dump_core (va_alist)
458 #ifdef ANSI_PROTOTYPES
459 va_start (args, string);
464 string = va_arg (args, char *);
466 /* "internal error" is always correct, since GDB should never dump
467 core, no matter what the input. */
468 fprintf_unfiltered (gdb_stderr, "\ngdb internal error: ");
469 vfprintf_unfiltered (gdb_stderr, string, args);
470 fprintf_unfiltered (gdb_stderr, "\n");
473 signal (SIGQUIT, SIG_DFL);
474 kill (getpid (), SIGQUIT);
475 /* We should never get here, but just in case... */
479 /* The strerror() function can return NULL for errno values that are
480 out of range. Provide a "safe" version that always returns a
484 safe_strerror (errnum)
490 if ((msg = strerror (errnum)) == NULL)
492 sprintf (buf, "(undocumented errno %d)", errnum);
498 /* The strsignal() function can return NULL for signal values that are
499 out of range. Provide a "safe" version that always returns a
503 safe_strsignal (signo)
509 if ((msg = strsignal (signo)) == NULL)
511 sprintf (buf, "(undocumented signal %d)", signo);
518 /* Print the system error message for errno, and also mention STRING
519 as the file name for which the error was encountered.
520 Then return to command level. */
523 perror_with_name (string)
529 err = safe_strerror (errno);
530 combined = (char *) alloca (strlen (err) + strlen (string) + 3);
531 strcpy (combined, string);
532 strcat (combined, ": ");
533 strcat (combined, err);
535 /* I understand setting these is a matter of taste. Still, some people
536 may clear errno but not know about bfd_error. Doing this here is not
538 bfd_set_error (bfd_error_no_error);
541 error ("%s.", combined);
544 /* Print the system error message for ERRCODE, and also mention STRING
545 as the file name for which the error was encountered. */
548 print_sys_errmsg (string, errcode)
555 err = safe_strerror (errcode);
556 combined = (char *) alloca (strlen (err) + strlen (string) + 3);
557 strcpy (combined, string);
558 strcat (combined, ": ");
559 strcat (combined, err);
561 /* We want anything which was printed on stdout to come out first, before
563 gdb_flush (gdb_stdout);
564 fprintf_unfiltered (gdb_stderr, "%s.\n", combined);
567 /* Control C eventually causes this to be called, at a convenient time. */
572 serial_t gdb_stdout_serial = serial_fdopen (1);
574 target_terminal_ours ();
576 /* We want all output to appear now, before we print "Quit". We
577 have 3 levels of buffering we have to flush (it's possible that
578 some of these should be changed to flush the lower-level ones
581 /* 1. The _filtered buffer. */
582 wrap_here ((char *)0);
584 /* 2. The stdio buffer. */
585 gdb_flush (gdb_stdout);
586 gdb_flush (gdb_stderr);
588 /* 3. The system-level buffer. */
589 SERIAL_FLUSH_OUTPUT (gdb_stdout_serial);
590 SERIAL_UN_FDOPEN (gdb_stdout_serial);
592 annotate_error_begin ();
594 /* Don't use *_filtered; we don't want to prompt the user to continue. */
596 fprintf_unfiltered (gdb_stderr, quit_pre_print);
599 /* If there is no terminal switching for this target, then we can't
600 possibly get screwed by the lack of job control. */
601 || current_target.to_terminal_ours == NULL)
602 fprintf_unfiltered (gdb_stderr, "Quit\n");
604 fprintf_unfiltered (gdb_stderr,
605 "Quit (expect signal SIGINT when the program is resumed)\n");
606 return_to_top_level (RETURN_QUIT);
610 #if defined(__GO32__) || defined (_WIN32)
613 /* In the absence of signals, poll keyboard for a quit.
614 Called from #define QUIT pollquit() in xm-go32.h. */
632 /* We just ignore it */
633 /* FIXME!! Don't think this actually works! */
634 fprintf_unfiltered (gdb_stderr, "CTRL-A to quit, CTRL-B to quit harder\n");
638 #else /* !_MSC_VER */
640 /* This above code is not valid for wingdb unless
641 * getkey and kbhit were to be rewritten.
642 * Windows translates all keyboard and mouse events
643 * into a message which is appended to the message
644 * queue for the process.
649 int k = win32pollquit();
661 #endif /* !_MSC_VER */
679 fprintf_unfiltered (gdb_stderr, "CTRL-A to quit, CTRL-B to quit harder\n");
683 #else /* !_MSC_VER */
687 int k = win32pollquit();
693 #endif /* !_MSC_VER */
698 /* Done by signals */
700 #endif /* defined(__GO32__) || defined(_WIN32) */
702 /* Control C comes here */
709 /* Restore the signal handler. Harmless with BSD-style signals, needed
710 for System V-style signals. So just always do it, rather than worrying
711 about USG defines and stuff like that. */
712 signal (signo, request_quit);
714 /* start-sanitize-gm */
717 #endif /* GENERAL_MAGIC */
718 /* end-sanitize-gm */
729 /* Memory management stuff (malloc friends). */
731 /* Make a substitute size_t for non-ANSI compilers. */
733 #ifndef HAVE_STDDEF_H
735 #define size_t unsigned int
739 #if defined (NO_MMALLOC)
746 return malloc (size);
750 mrealloc (md, ptr, size)
755 if (ptr == 0) /* Guard against old realloc's */
756 return malloc (size);
758 return realloc (ptr, size);
769 #endif /* NO_MMALLOC */
771 #if defined (NO_MMALLOC) || defined (NO_MMCHECK)
779 #else /* Have mmalloc and want corruption checking */
784 fatal_dump_core ("Memory corruption");
787 /* Attempt to install hooks in mmalloc/mrealloc/mfree for the heap specified
788 by MD, to detect memory corruption. Note that MD may be NULL to specify
789 the default heap that grows via sbrk.
791 Note that for freshly created regions, we must call mmcheckf prior to any
792 mallocs in the region. Otherwise, any region which was allocated prior to
793 installing the checking hooks, which is later reallocated or freed, will
794 fail the checks! The mmcheck function only allows initial hooks to be
795 installed before the first mmalloc. However, anytime after we have called
796 mmcheck the first time to install the checking hooks, we can call it again
797 to update the function pointer to the memory corruption handler.
799 Returns zero on failure, non-zero on success. */
801 #ifndef MMCHECK_FORCE
802 #define MMCHECK_FORCE 0
809 if (!mmcheckf (md, malloc_botch, MMCHECK_FORCE))
811 /* Don't use warning(), which relies on current_target being set
812 to something other than dummy_target, until after
813 initialize_all_files(). */
816 (gdb_stderr, "warning: failed to install memory consistency checks; ");
818 (gdb_stderr, "configuration should define NO_MMCHECK or MMCHECK_FORCE\n");
824 #endif /* Have mmalloc and want corruption checking */
826 /* Called when a memory allocation fails, with the number of bytes of
827 memory requested in SIZE. */
835 fatal ("virtual memory exhausted: can't allocate %ld bytes.", size);
839 fatal ("virtual memory exhausted.");
843 /* Like mmalloc but get error if no storage available, and protect against
844 the caller wanting to allocate zero bytes. Whether to return NULL for
845 a zero byte request, or translate the request into a request for one
846 byte of zero'd storage, is a religious issue. */
859 else if ((val = mmalloc (md, size)) == NULL)
866 /* Like mrealloc but get error if no storage available. */
869 xmrealloc (md, ptr, size)
878 val = mrealloc (md, ptr, size);
882 val = mmalloc (md, size);
891 /* Like malloc but get error if no storage available, and protect against
892 the caller wanting to allocate zero bytes. */
898 return (xmmalloc ((PTR) NULL, size));
901 /* Like mrealloc but get error if no storage available. */
908 return (xmrealloc ((PTR) NULL, ptr, size));
912 /* My replacement for the read system call.
913 Used like `read' but keeps going if `read' returns too soon. */
916 myread (desc, addr, len)
926 val = read (desc, addr, len);
937 /* Make a copy of the string at PTR with SIZE characters
938 (and add a null character at the end in the copy).
939 Uses malloc to get the space. Returns the address of the copy. */
942 savestring (ptr, size)
946 register char *p = (char *) xmalloc (size + 1);
947 memcpy (p, ptr, size);
953 msavestring (md, ptr, size)
958 register char *p = (char *) xmmalloc (md, size + 1);
959 memcpy (p, ptr, size);
964 /* The "const" is so it compiles under DGUX (which prototypes strsave
965 in <string.h>. FIXME: This should be named "xstrsave", shouldn't it?
966 Doesn't real strsave return NULL if out of memory? */
971 return savestring (ptr, strlen (ptr));
979 return (msavestring (md, ptr, strlen (ptr)));
983 print_spaces (n, file)
991 /* Print a host address. */
994 gdb_print_address (addr, stream)
999 /* We could use the %p conversion specifier to fprintf if we had any
1000 way of knowing whether this host supports it. But the following
1001 should work on the Alpha and on 32 bit machines. */
1003 fprintf_filtered (stream, "0x%lx", (unsigned long)addr);
1006 /* Ask user a y-or-n question and return 1 iff answer is yes.
1007 Takes three args which are given to printf to print the question.
1008 The first, a control string, should end in "? ".
1009 It should not say how to answer, because we do that. */
1013 #ifdef ANSI_PROTOTYPES
1014 query (char *ctlstr, ...)
1021 register int answer;
1025 #ifdef ANSI_PROTOTYPES
1026 va_start (args, ctlstr);
1030 ctlstr = va_arg (args, char *);
1035 return query_hook (ctlstr, args);
1038 /* Automatically answer "yes" if input is not from a terminal. */
1039 if (!input_from_terminal_p ())
1042 /* FIXME Automatically answer "yes" if called from MacGDB. */
1049 wrap_here (""); /* Flush any buffered output */
1050 gdb_flush (gdb_stdout);
1052 if (annotation_level > 1)
1053 printf_filtered ("\n\032\032pre-query\n");
1055 vfprintf_filtered (gdb_stdout, ctlstr, args);
1056 printf_filtered ("(y or n) ");
1058 if (annotation_level > 1)
1059 printf_filtered ("\n\032\032query\n");
1062 /* If not in MacGDB, move to a new line so the entered line doesn't
1063 have a prompt on the front of it. */
1065 fputs_unfiltered ("\n", gdb_stdout);
1068 gdb_flush (gdb_stdout);
1069 answer = fgetc (stdin);
1070 clearerr (stdin); /* in case of C-d */
1071 if (answer == EOF) /* C-d */
1076 if (answer != '\n') /* Eat rest of input line, to EOF or newline */
1079 ans2 = fgetc (stdin);
1082 while (ans2 != EOF && ans2 != '\n');
1095 printf_filtered ("Please answer y or n.\n");
1098 if (annotation_level > 1)
1099 printf_filtered ("\n\032\032post-query\n");
1104 /* Parse a C escape sequence. STRING_PTR points to a variable
1105 containing a pointer to the string to parse. That pointer
1106 should point to the character after the \. That pointer
1107 is updated past the characters we use. The value of the
1108 escape sequence is returned.
1110 A negative value means the sequence \ newline was seen,
1111 which is supposed to be equivalent to nothing at all.
1113 If \ is followed by a null character, we return a negative
1114 value and leave the string pointer pointing at the null character.
1116 If \ is followed by 000, we return 0 and leave the string pointer
1117 after the zeros. A value of 0 does not mean end of string. */
1120 parse_escape (string_ptr)
1123 register int c = *(*string_ptr)++;
1127 return 007; /* Bell (alert) char */
1130 case 'e': /* Escape character */
1148 c = *(*string_ptr)++;
1150 c = parse_escape (string_ptr);
1153 return (c & 0200) | (c & 037);
1164 register int i = c - '0';
1165 register int count = 0;
1168 if ((c = *(*string_ptr)++) >= '0' && c <= '7')
1186 /* Print the character C on STREAM as part of the contents of a literal
1187 string whose delimiter is QUOTER. Note that this routine should only
1188 be call for printing things which are independent of the language
1189 of the program being debugged. */
1192 gdb_printchar (c, stream, quoter)
1198 c &= 0xFF; /* Avoid sign bit follies */
1200 if ( c < 0x20 || /* Low control chars */
1201 (c >= 0x7F && c < 0xA0) || /* DEL, High controls */
1202 (sevenbit_strings && c >= 0x80)) { /* high order bit set */
1206 fputs_filtered ("\\n", stream);
1209 fputs_filtered ("\\b", stream);
1212 fputs_filtered ("\\t", stream);
1215 fputs_filtered ("\\f", stream);
1218 fputs_filtered ("\\r", stream);
1221 fputs_filtered ("\\e", stream);
1224 fputs_filtered ("\\a", stream);
1227 fprintf_filtered (stream, "\\%.3o", (unsigned int) c);
1231 if (c == '\\' || c == quoter)
1232 fputs_filtered ("\\", stream);
1233 fprintf_filtered (stream, "%c", c);
1237 /* Number of lines per page or UINT_MAX if paging is disabled. */
1238 static unsigned int lines_per_page;
1239 /* Number of chars per line or UNIT_MAX is line folding is disabled. */
1240 static unsigned int chars_per_line;
1241 /* Current count of lines printed on this page, chars on this line. */
1242 static unsigned int lines_printed, chars_printed;
1244 /* Buffer and start column of buffered text, for doing smarter word-
1245 wrapping. When someone calls wrap_here(), we start buffering output
1246 that comes through fputs_filtered(). If we see a newline, we just
1247 spit it out and forget about the wrap_here(). If we see another
1248 wrap_here(), we spit it out and remember the newer one. If we see
1249 the end of the line, we spit out a newline, the indent, and then
1250 the buffered output. */
1252 /* Malloc'd buffer with chars_per_line+2 bytes. Contains characters which
1253 are waiting to be output (they have already been counted in chars_printed).
1254 When wrap_buffer[0] is null, the buffer is empty. */
1255 static char *wrap_buffer;
1257 /* Pointer in wrap_buffer to the next character to fill. */
1258 static char *wrap_pointer;
1260 /* String to indent by if the wrap occurs. Must not be NULL if wrap_column
1262 static char *wrap_indent;
1264 /* Column number on the screen where wrap_buffer begins, or 0 if wrapping
1265 is not in effect. */
1266 static int wrap_column;
1270 set_width_command (args, from_tty, c)
1273 struct cmd_list_element *c;
1277 wrap_buffer = (char *) xmalloc (chars_per_line + 2);
1278 wrap_buffer[0] = '\0';
1281 wrap_buffer = (char *) xrealloc (wrap_buffer, chars_per_line + 2);
1282 wrap_pointer = wrap_buffer; /* Start it at the beginning */
1285 /* Wait, so the user can read what's on the screen. Prompt the user
1286 to continue by pressing RETURN. */
1289 prompt_for_continue ()
1292 char cont_prompt[120];
1294 if (annotation_level > 1)
1295 printf_unfiltered ("\n\032\032pre-prompt-for-continue\n");
1297 strcpy (cont_prompt,
1298 "---Type <return> to continue, or q <return> to quit---");
1299 if (annotation_level > 1)
1300 strcat (cont_prompt, "\n\032\032prompt-for-continue\n");
1302 /* We must do this *before* we call gdb_readline, else it will eventually
1303 call us -- thinking that we're trying to print beyond the end of the
1305 reinitialize_more_filter ();
1308 /* On a real operating system, the user can quit with SIGINT.
1311 'q' is provided on all systems so users don't have to change habits
1312 from system to system, and because telling them what to do in
1313 the prompt is more user-friendly than expecting them to think of
1315 /* Call readline, not gdb_readline, because GO32 readline handles control-C
1316 whereas control-C to gdb_readline will cause the user to get dumped
1318 ignore = readline (cont_prompt);
1320 if (annotation_level > 1)
1321 printf_unfiltered ("\n\032\032post-prompt-for-continue\n");
1326 while (*p == ' ' || *p == '\t')
1329 request_quit (SIGINT);
1334 /* Now we have to do this again, so that GDB will know that it doesn't
1335 need to save the ---Type <return>--- line at the top of the screen. */
1336 reinitialize_more_filter ();
1338 dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */
1341 /* Reinitialize filter; ie. tell it to reset to original values. */
1344 reinitialize_more_filter ()
1350 /* Indicate that if the next sequence of characters overflows the line,
1351 a newline should be inserted here rather than when it hits the end.
1352 If INDENT is non-null, it is a string to be printed to indent the
1353 wrapped part on the next line. INDENT must remain accessible until
1354 the next call to wrap_here() or until a newline is printed through
1357 If the line is already overfull, we immediately print a newline and
1358 the indentation, and disable further wrapping.
1360 If we don't know the width of lines, but we know the page height,
1361 we must not wrap words, but should still keep track of newlines
1362 that were explicitly printed.
1364 INDENT should not contain tabs, as that will mess up the char count
1365 on the next line. FIXME.
1367 This routine is guaranteed to force out any output which has been
1368 squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be
1369 used to force out output from the wrap_buffer. */
1375 /* This should have been allocated, but be paranoid anyway. */
1381 *wrap_pointer = '\0';
1382 fputs_unfiltered (wrap_buffer, gdb_stdout);
1384 wrap_pointer = wrap_buffer;
1385 wrap_buffer[0] = '\0';
1386 if (chars_per_line == UINT_MAX) /* No line overflow checking */
1390 else if (chars_printed >= chars_per_line)
1392 puts_filtered ("\n");
1394 puts_filtered (indent);
1399 wrap_column = chars_printed;
1403 wrap_indent = indent;
1407 /* Ensure that whatever gets printed next, using the filtered output
1408 commands, starts at the beginning of the line. I.E. if there is
1409 any pending output for the current line, flush it and start a new
1410 line. Otherwise do nothing. */
1415 if (chars_printed > 0)
1417 puts_filtered ("\n");
1423 gdb_fopen (name, mode)
1427 return fopen (name, mode);
1435 && (stream == gdb_stdout
1436 || stream == gdb_stderr))
1438 flush_hook (stream);
1445 /* Like fputs but if FILTER is true, pause after every screenful.
1447 Regardless of FILTER can wrap at points other than the final
1448 character of a line.
1450 Unlike fputs, fputs_maybe_filtered does not return a value.
1451 It is OK for LINEBUFFER to be NULL, in which case just don't print
1454 Note that a longjmp to top level may occur in this routine (only if
1455 FILTER is true) (since prompt_for_continue may do so) so this
1456 routine should not be called when cleanups are not in place. */
1459 fputs_maybe_filtered (linebuffer, stream, filter)
1460 const char *linebuffer;
1464 const char *lineptr;
1466 if (linebuffer == 0)
1469 /* Don't do any filtering if it is disabled. */
1470 if (stream != gdb_stdout
1471 || (lines_per_page == UINT_MAX && chars_per_line == UINT_MAX))
1473 fputs_unfiltered (linebuffer, stream);
1477 /* Go through and output each character. Show line extension
1478 when this is necessary; prompt user for new page when this is
1481 lineptr = linebuffer;
1484 /* Possible new page. */
1486 (lines_printed >= lines_per_page - 1))
1487 prompt_for_continue ();
1489 while (*lineptr && *lineptr != '\n')
1491 /* Print a single line. */
1492 if (*lineptr == '\t')
1495 *wrap_pointer++ = '\t';
1497 fputc_unfiltered ('\t', stream);
1498 /* Shifting right by 3 produces the number of tab stops
1499 we have already passed, and then adding one and
1500 shifting left 3 advances to the next tab stop. */
1501 chars_printed = ((chars_printed >> 3) + 1) << 3;
1507 *wrap_pointer++ = *lineptr;
1509 fputc_unfiltered (*lineptr, stream);
1514 if (chars_printed >= chars_per_line)
1516 unsigned int save_chars = chars_printed;
1520 /* If we aren't actually wrapping, don't output newline --
1521 if chars_per_line is right, we probably just overflowed
1522 anyway; if it's wrong, let us keep going. */
1524 fputc_unfiltered ('\n', stream);
1526 /* Possible new page. */
1527 if (lines_printed >= lines_per_page - 1)
1528 prompt_for_continue ();
1530 /* Now output indentation and wrapped string */
1533 fputs_unfiltered (wrap_indent, stream);
1534 *wrap_pointer = '\0'; /* Null-terminate saved stuff */
1535 fputs_unfiltered (wrap_buffer, stream); /* and eject it */
1536 /* FIXME, this strlen is what prevents wrap_indent from
1537 containing tabs. However, if we recurse to print it
1538 and count its chars, we risk trouble if wrap_indent is
1539 longer than (the user settable) chars_per_line.
1540 Note also that this can set chars_printed > chars_per_line
1541 if we are printing a long string. */
1542 chars_printed = strlen (wrap_indent)
1543 + (save_chars - wrap_column);
1544 wrap_pointer = wrap_buffer; /* Reset buffer */
1545 wrap_buffer[0] = '\0';
1546 wrap_column = 0; /* And disable fancy wrap */
1551 if (*lineptr == '\n')
1554 wrap_here ((char *)0); /* Spit out chars, cancel further wraps */
1556 fputc_unfiltered ('\n', stream);
1563 fputs_filtered (linebuffer, stream)
1564 const char *linebuffer;
1567 fputs_maybe_filtered (linebuffer, stream, 1);
1571 putchar_unfiltered (c)
1578 fputs_unfiltered (buf, gdb_stdout);
1583 fputc_unfiltered (c, stream)
1591 fputs_unfiltered (buf, stream);
1596 /* Print a variable number of ARGS using format FORMAT. If this
1597 information is going to put the amount written (since the last call
1598 to REINITIALIZE_MORE_FILTER or the last page break) over the page size,
1599 call prompt_for_continue to get the users permision to continue.
1601 Unlike fprintf, this function does not return a value.
1603 We implement three variants, vfprintf (takes a vararg list and stream),
1604 fprintf (takes a stream to write on), and printf (the usual).
1606 Note also that a longjmp to top level may occur in this routine
1607 (since prompt_for_continue may do so) so this routine should not be
1608 called when cleanups are not in place. */
1611 vfprintf_maybe_filtered (stream, format, args, filter)
1618 struct cleanup *old_cleanups;
1620 vasprintf (&linebuffer, format, args);
1621 if (linebuffer == NULL)
1623 fputs_unfiltered ("\ngdb: virtual memory exhausted.\n", gdb_stderr);
1626 old_cleanups = make_cleanup (free, linebuffer);
1627 fputs_maybe_filtered (linebuffer, stream, filter);
1628 do_cleanups (old_cleanups);
1633 vfprintf_filtered (stream, format, args)
1638 vfprintf_maybe_filtered (stream, format, args, 1);
1642 vfprintf_unfiltered (stream, format, args)
1648 struct cleanup *old_cleanups;
1650 vasprintf (&linebuffer, format, args);
1651 if (linebuffer == NULL)
1653 fputs_unfiltered ("\ngdb: virtual memory exhausted.\n", gdb_stderr);
1656 old_cleanups = make_cleanup (free, linebuffer);
1657 fputs_unfiltered (linebuffer, stream);
1658 do_cleanups (old_cleanups);
1662 vprintf_filtered (format, args)
1666 vfprintf_maybe_filtered (gdb_stdout, format, args, 1);
1670 vprintf_unfiltered (format, args)
1674 vfprintf_unfiltered (gdb_stdout, format, args);
1679 #ifdef ANSI_PROTOTYPES
1680 fprintf_filtered (FILE *stream, const char *format, ...)
1682 fprintf_filtered (va_alist)
1687 #ifdef ANSI_PROTOTYPES
1688 va_start (args, format);
1694 stream = va_arg (args, FILE *);
1695 format = va_arg (args, char *);
1697 vfprintf_filtered (stream, format, args);
1703 #ifdef ANSI_PROTOTYPES
1704 fprintf_unfiltered (FILE *stream, const char *format, ...)
1706 fprintf_unfiltered (va_alist)
1711 #ifdef ANSI_PROTOTYPES
1712 va_start (args, format);
1718 stream = va_arg (args, FILE *);
1719 format = va_arg (args, char *);
1721 vfprintf_unfiltered (stream, format, args);
1725 /* Like fprintf_filtered, but prints its result indented.
1726 Called as fprintfi_filtered (spaces, stream, format, ...); */
1730 #ifdef ANSI_PROTOTYPES
1731 fprintfi_filtered (int spaces, FILE *stream, const char *format, ...)
1733 fprintfi_filtered (va_alist)
1738 #ifdef ANSI_PROTOTYPES
1739 va_start (args, format);
1746 spaces = va_arg (args, int);
1747 stream = va_arg (args, FILE *);
1748 format = va_arg (args, char *);
1750 print_spaces_filtered (spaces, stream);
1752 vfprintf_filtered (stream, format, args);
1759 #ifdef ANSI_PROTOTYPES
1760 printf_filtered (const char *format, ...)
1762 printf_filtered (va_alist)
1767 #ifdef ANSI_PROTOTYPES
1768 va_start (args, format);
1773 format = va_arg (args, char *);
1775 vfprintf_filtered (gdb_stdout, format, args);
1782 #ifdef ANSI_PROTOTYPES
1783 printf_unfiltered (const char *format, ...)
1785 printf_unfiltered (va_alist)
1790 #ifdef ANSI_PROTOTYPES
1791 va_start (args, format);
1796 format = va_arg (args, char *);
1798 vfprintf_unfiltered (gdb_stdout, format, args);
1802 /* Like printf_filtered, but prints it's result indented.
1803 Called as printfi_filtered (spaces, format, ...); */
1807 #ifdef ANSI_PROTOTYPES
1808 printfi_filtered (int spaces, const char *format, ...)
1810 printfi_filtered (va_alist)
1815 #ifdef ANSI_PROTOTYPES
1816 va_start (args, format);
1822 spaces = va_arg (args, int);
1823 format = va_arg (args, char *);
1825 print_spaces_filtered (spaces, gdb_stdout);
1826 vfprintf_filtered (gdb_stdout, format, args);
1830 /* Easy -- but watch out!
1832 This routine is *not* a replacement for puts()! puts() appends a newline.
1833 This one doesn't, and had better not! */
1836 puts_filtered (string)
1839 fputs_filtered (string, gdb_stdout);
1843 puts_unfiltered (string)
1846 fputs_unfiltered (string, gdb_stdout);
1849 /* Return a pointer to N spaces and a null. The pointer is good
1850 until the next call to here. */
1856 static char *spaces;
1857 static int max_spaces;
1863 spaces = (char *) xmalloc (n+1);
1864 for (t = spaces+n; t != spaces;)
1870 return spaces + max_spaces - n;
1873 /* Print N spaces. */
1875 print_spaces_filtered (n, stream)
1879 fputs_filtered (n_spaces (n), stream);
1882 /* C++ demangler stuff. */
1884 /* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language
1885 LANG, using demangling args ARG_MODE, and print it filtered to STREAM.
1886 If the name is not mangled, or the language for the name is unknown, or
1887 demangling is off, the name is printed in its "raw" form. */
1890 fprintf_symbol_filtered (stream, name, lang, arg_mode)
1900 /* If user wants to see raw output, no problem. */
1903 fputs_filtered (name, stream);
1909 case language_cplus:
1910 demangled = cplus_demangle (name, arg_mode);
1912 case language_chill:
1913 demangled = chill_demangle (name);
1919 fputs_filtered (demangled ? demangled : name, stream);
1920 if (demangled != NULL)
1928 /* Do a strcmp() type operation on STRING1 and STRING2, ignoring any
1929 differences in whitespace. Returns 0 if they match, non-zero if they
1930 don't (slightly different than strcmp()'s range of return values).
1932 As an extra hack, string1=="FOO(ARGS)" matches string2=="FOO".
1933 This "feature" is useful when searching for matching C++ function names
1934 (such as if the user types 'break FOO', where FOO is a mangled C++
1938 strcmp_iw (string1, string2)
1939 const char *string1;
1940 const char *string2;
1942 while ((*string1 != '\0') && (*string2 != '\0'))
1944 while (isspace (*string1))
1948 while (isspace (*string2))
1952 if (*string1 != *string2)
1956 if (*string1 != '\0')
1962 return (*string1 != '\0' && *string1 != '(') || (*string2 != '\0');
1969 struct cmd_list_element *c;
1971 c = add_set_cmd ("width", class_support, var_uinteger,
1972 (char *)&chars_per_line,
1973 "Set number of characters gdb thinks are in a line.",
1975 add_show_from_set (c, &showlist);
1976 c->function.sfunc = set_width_command;
1979 (add_set_cmd ("height", class_support,
1980 var_uinteger, (char *)&lines_per_page,
1981 "Set number of lines gdb thinks are in a page.", &setlist),
1984 /* These defaults will be used if we are unable to get the correct
1985 values from termcap. */
1986 #if defined(__GO32__)
1987 lines_per_page = ScreenRows();
1988 chars_per_line = ScreenCols();
1990 lines_per_page = 24;
1991 chars_per_line = 80;
1993 #if !defined (MPW) && !defined (_WIN32)
1994 /* No termcap under MPW, although might be cool to do something
1995 by looking at worksheet or console window sizes. */
1996 /* Initialize the screen height and width from termcap. */
1998 char *termtype = getenv ("TERM");
2000 /* Positive means success, nonpositive means failure. */
2003 /* 2048 is large enough for all known terminals, according to the
2004 GNU termcap manual. */
2005 char term_buffer[2048];
2009 status = tgetent (term_buffer, termtype);
2014 val = tgetnum ("li");
2016 lines_per_page = val;
2018 /* The number of lines per page is not mentioned
2019 in the terminal description. This probably means
2020 that paging is not useful (e.g. emacs shell window),
2021 so disable paging. */
2022 lines_per_page = UINT_MAX;
2024 val = tgetnum ("co");
2026 chars_per_line = val;
2032 #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER)
2034 /* If there is a better way to determine the window size, use it. */
2035 SIGWINCH_HANDLER ();
2038 /* If the output is not a terminal, don't paginate it. */
2039 if (!ISATTY (gdb_stdout))
2040 lines_per_page = UINT_MAX;
2042 set_width_command ((char *)NULL, 0, c);
2045 (add_set_cmd ("demangle", class_support, var_boolean,
2047 "Set demangling of encoded C++ names when displaying symbols.",
2052 (add_set_cmd ("sevenbit-strings", class_support, var_boolean,
2053 (char *)&sevenbit_strings,
2054 "Set printing of 8-bit characters in strings as \\nnn.",
2059 (add_set_cmd ("asm-demangle", class_support, var_boolean,
2060 (char *)&asm_demangle,
2061 "Set demangling of C++ names in disassembly listings.",
2066 /* Machine specific function to handle SIGWINCH signal. */
2068 #ifdef SIGWINCH_HANDLER_BODY
2069 SIGWINCH_HANDLER_BODY
2072 /* Support for converting target fp numbers into host DOUBLEST format. */
2074 /* XXX - This code should really be in libiberty/floatformat.c, however
2075 configuration issues with libiberty made this very difficult to do in the
2078 #include "floatformat.h"
2079 #include <math.h> /* ldexp */
2081 /* The odds that CHAR_BIT will be anything but 8 are low enough that I'm not
2082 going to bother with trying to muck around with whether it is defined in
2083 a system header, what we do if not, etc. */
2084 #define FLOATFORMAT_CHAR_BIT 8
2086 static unsigned long get_field PARAMS ((unsigned char *,
2087 enum floatformat_byteorders,
2092 /* Extract a field which starts at START and is LEN bytes long. DATA and
2093 TOTAL_LEN are the thing we are extracting it from, in byteorder ORDER. */
2094 static unsigned long
2095 get_field (data, order, total_len, start, len)
2096 unsigned char *data;
2097 enum floatformat_byteorders order;
2098 unsigned int total_len;
2102 unsigned long result;
2103 unsigned int cur_byte;
2106 /* Start at the least significant part of the field. */
2107 cur_byte = (start + len) / FLOATFORMAT_CHAR_BIT;
2108 if (order == floatformat_little || order == floatformat_littlebyte_bigword)
2109 cur_byte = (total_len / FLOATFORMAT_CHAR_BIT) - cur_byte - 1;
2111 ((start + len) % FLOATFORMAT_CHAR_BIT) - FLOATFORMAT_CHAR_BIT;
2112 result = *(data + cur_byte) >> (-cur_bitshift);
2113 cur_bitshift += FLOATFORMAT_CHAR_BIT;
2114 if (order == floatformat_little || order == floatformat_littlebyte_bigword)
2119 /* Move towards the most significant part of the field. */
2120 while (cur_bitshift < len)
2122 if (len - cur_bitshift < FLOATFORMAT_CHAR_BIT)
2123 /* This is the last byte; zero out the bits which are not part of
2126 (*(data + cur_byte) & ((1 << (len - cur_bitshift)) - 1))
2129 result |= *(data + cur_byte) << cur_bitshift;
2130 cur_bitshift += FLOATFORMAT_CHAR_BIT;
2131 if (order == floatformat_little || order == floatformat_littlebyte_bigword)
2139 /* Convert from FMT to a DOUBLEST.
2140 FROM is the address of the extended float.
2141 Store the DOUBLEST in *TO. */
2144 floatformat_to_doublest (fmt, from, to)
2145 const struct floatformat *fmt;
2149 unsigned char *ufrom = (unsigned char *)from;
2153 unsigned int mant_bits, mant_off;
2155 int special_exponent; /* It's a NaN, denorm or zero */
2157 /* If the mantissa bits are not contiguous from one end of the
2158 mantissa to the other, we need to make a private copy of the
2159 source bytes that is in the right order since the unpacking
2160 algorithm assumes that the bits are contiguous.
2162 Swap the bytes individually rather than accessing them through
2163 "long *" since we have no guarantee that they start on a long
2164 alignment, and also sizeof(long) for the host could be different
2165 than sizeof(long) for the target. FIXME: Assumes sizeof(long)
2166 for the target is 4. */
2168 if (fmt -> byteorder == floatformat_littlebyte_bigword)
2170 static unsigned char *newfrom;
2171 unsigned char *swapin, *swapout;
2174 longswaps = fmt -> totalsize / FLOATFORMAT_CHAR_BIT;
2177 if (newfrom == NULL)
2179 newfrom = xmalloc (fmt -> totalsize);
2184 while (longswaps-- > 0)
2186 /* This is ugly, but efficient */
2187 *swapout++ = swapin[4];
2188 *swapout++ = swapin[5];
2189 *swapout++ = swapin[6];
2190 *swapout++ = swapin[7];
2191 *swapout++ = swapin[0];
2192 *swapout++ = swapin[1];
2193 *swapout++ = swapin[2];
2194 *swapout++ = swapin[3];
2199 exponent = get_field (ufrom, fmt->byteorder, fmt->totalsize,
2200 fmt->exp_start, fmt->exp_len);
2201 /* Note that if exponent indicates a NaN, we can't really do anything useful
2202 (not knowing if the host has NaN's, or how to build one). So it will
2203 end up as an infinity or something close; that is OK. */
2205 mant_bits_left = fmt->man_len;
2206 mant_off = fmt->man_start;
2209 special_exponent = exponent == 0 || exponent == fmt->exp_nan;
2211 /* Don't bias zero's, denorms or NaNs. */
2212 if (!special_exponent)
2213 exponent -= fmt->exp_bias;
2215 /* Build the result algebraically. Might go infinite, underflow, etc;
2218 /* If this format uses a hidden bit, explicitly add it in now. Otherwise,
2219 increment the exponent by one to account for the integer bit. */
2221 if (!special_exponent)
2222 if (fmt->intbit == floatformat_intbit_no)
2223 dto = ldexp (1.0, exponent);
2227 while (mant_bits_left > 0)
2229 mant_bits = min (mant_bits_left, 32);
2231 mant = get_field (ufrom, fmt->byteorder, fmt->totalsize,
2232 mant_off, mant_bits);
2234 dto += ldexp ((double)mant, exponent - mant_bits);
2235 exponent -= mant_bits;
2236 mant_off += mant_bits;
2237 mant_bits_left -= mant_bits;
2240 /* Negate it if negative. */
2241 if (get_field (ufrom, fmt->byteorder, fmt->totalsize, fmt->sign_start, 1))
2246 static void put_field PARAMS ((unsigned char *, enum floatformat_byteorders,
2252 /* Set a field which starts at START and is LEN bytes long. DATA and
2253 TOTAL_LEN are the thing we are extracting it from, in byteorder ORDER. */
2255 put_field (data, order, total_len, start, len, stuff_to_put)
2256 unsigned char *data;
2257 enum floatformat_byteorders order;
2258 unsigned int total_len;
2261 unsigned long stuff_to_put;
2263 unsigned int cur_byte;
2266 /* Start at the least significant part of the field. */
2267 cur_byte = (start + len) / FLOATFORMAT_CHAR_BIT;
2268 if (order == floatformat_little || order == floatformat_littlebyte_bigword)
2269 cur_byte = (total_len / FLOATFORMAT_CHAR_BIT) - cur_byte - 1;
2271 ((start + len) % FLOATFORMAT_CHAR_BIT) - FLOATFORMAT_CHAR_BIT;
2272 *(data + cur_byte) &=
2273 ~(((1 << ((start + len) % FLOATFORMAT_CHAR_BIT)) - 1) << (-cur_bitshift));
2274 *(data + cur_byte) |=
2275 (stuff_to_put & ((1 << FLOATFORMAT_CHAR_BIT) - 1)) << (-cur_bitshift);
2276 cur_bitshift += FLOATFORMAT_CHAR_BIT;
2277 if (order == floatformat_little || order == floatformat_littlebyte_bigword)
2282 /* Move towards the most significant part of the field. */
2283 while (cur_bitshift < len)
2285 if (len - cur_bitshift < FLOATFORMAT_CHAR_BIT)
2287 /* This is the last byte. */
2288 *(data + cur_byte) &=
2289 ~((1 << (len - cur_bitshift)) - 1);
2290 *(data + cur_byte) |= (stuff_to_put >> cur_bitshift);
2293 *(data + cur_byte) = ((stuff_to_put >> cur_bitshift)
2294 & ((1 << FLOATFORMAT_CHAR_BIT) - 1));
2295 cur_bitshift += FLOATFORMAT_CHAR_BIT;
2296 if (order == floatformat_little || order == floatformat_littlebyte_bigword)
2303 #ifdef HAVE_LONG_DOUBLE
2304 /* Return the fractional part of VALUE, and put the exponent of VALUE in *EPTR.
2305 The range of the returned value is >= 0.5 and < 1.0. This is equivalent to
2306 frexp, but operates on the long double data type. */
2308 static long double ldfrexp PARAMS ((long double value, int *eptr));
2311 ldfrexp (value, eptr)
2318 /* Unfortunately, there are no portable functions for extracting the exponent
2319 of a long double, so we have to do it iteratively by multiplying or dividing
2320 by two until the fraction is between 0.5 and 1.0. */
2328 if (value >= tmp) /* Value >= 1.0 */
2329 while (value >= tmp)
2334 else if (value != 0.0l) /* Value < 1.0 and > 0.0 */
2348 #endif /* HAVE_LONG_DOUBLE */
2351 /* The converse: convert the DOUBLEST *FROM to an extended float
2352 and store where TO points. Neither FROM nor TO have any alignment
2356 floatformat_from_doublest (fmt, from, to)
2357 CONST struct floatformat *fmt;
2364 unsigned int mant_bits, mant_off;
2366 unsigned char *uto = (unsigned char *)to;
2368 memcpy (&dfrom, from, sizeof (dfrom));
2369 memset (uto, 0, fmt->totalsize / FLOATFORMAT_CHAR_BIT);
2371 return; /* Result is zero */
2372 if (dfrom != dfrom) /* Result is NaN */
2375 put_field (uto, fmt->byteorder, fmt->totalsize, fmt->exp_start,
2376 fmt->exp_len, fmt->exp_nan);
2377 /* Be sure it's not infinity, but NaN value is irrel */
2378 put_field (uto, fmt->byteorder, fmt->totalsize, fmt->man_start,
2383 /* If negative, set the sign bit. */
2386 put_field (uto, fmt->byteorder, fmt->totalsize, fmt->sign_start, 1, 1);
2390 if (dfrom + 1 == dfrom) /* Result is Infinity */
2392 /* Infinity exponent is same as NaN's. */
2393 put_field (uto, fmt->byteorder, fmt->totalsize, fmt->exp_start,
2394 fmt->exp_len, fmt->exp_nan);
2395 /* Infinity mantissa is all zeroes. */
2396 put_field (uto, fmt->byteorder, fmt->totalsize, fmt->man_start,
2401 #ifdef HAVE_LONG_DOUBLE
2402 mant = ldfrexp (dfrom, &exponent);
2404 mant = frexp (dfrom, &exponent);
2407 put_field (uto, fmt->byteorder, fmt->totalsize, fmt->exp_start, fmt->exp_len,
2408 exponent + fmt->exp_bias - 1);
2410 mant_bits_left = fmt->man_len;
2411 mant_off = fmt->man_start;
2412 while (mant_bits_left > 0)
2414 unsigned long mant_long;
2415 mant_bits = mant_bits_left < 32 ? mant_bits_left : 32;
2417 mant *= 4294967296.0;
2418 mant_long = (unsigned long)mant;
2421 /* If the integer bit is implicit, then we need to discard it.
2422 If we are discarding a zero, we should be (but are not) creating
2423 a denormalized number which means adjusting the exponent
2425 if (mant_bits_left == fmt->man_len
2426 && fmt->intbit == floatformat_intbit_no)
2434 /* The bits we want are in the most significant MANT_BITS bits of
2435 mant_long. Move them to the least significant. */
2436 mant_long >>= 32 - mant_bits;
2439 put_field (uto, fmt->byteorder, fmt->totalsize,
2440 mant_off, mant_bits, mant_long);
2441 mant_off += mant_bits;
2442 mant_bits_left -= mant_bits;
2444 if (fmt -> byteorder == floatformat_littlebyte_bigword)
2447 unsigned char *swaplow = uto;
2448 unsigned char *swaphigh = uto + 4;
2451 for (count = 0; count < 4; count++)
2454 *swaplow++ = *swaphigh;
2460 /* temporary storage using circular buffer */
2466 static char buf[NUMCELLS][CELLSIZE];
2468 if (++cell>=NUMCELLS) cell=0;
2472 /* print routines to handle variable size regs, etc.
2474 FIXME: Note that t_addr is a bfd_vma, which is currently either an
2475 unsigned long or unsigned long long, determined at configure time.
2476 If t_addr is an unsigned long long and sizeof (unsigned long long)
2477 is greater than sizeof (unsigned long), then I believe this code will
2478 probably lose, at least for little endian machines. I believe that
2479 it would also be better to eliminate the switch on the absolute size
2480 of t_addr and replace it with a sequence of if statements that compare
2481 sizeof t_addr with sizeof the various types and do the right thing,
2482 which includes knowing whether or not the host supports long long.
2487 static int thirty_two = 32; /* eliminate warning from compiler on 32-bit systems */
2493 char *paddr_str=get_cell();
2494 switch (sizeof(t_addr))
2497 sprintf (paddr_str, "%08lx%08lx",
2498 (unsigned long) (addr >> thirty_two), (unsigned long) (addr & 0xffffffff));
2501 sprintf (paddr_str, "%08lx", (unsigned long) addr);
2504 sprintf (paddr_str, "%04x", (unsigned short) (addr & 0xffff));
2507 sprintf (paddr_str, "%lx", (unsigned long) addr);
2516 char *preg_str=get_cell();
2517 switch (sizeof(t_reg))
2520 sprintf (preg_str, "%08lx%08lx",
2521 (unsigned long) (reg >> thirty_two), (unsigned long) (reg & 0xffffffff));
2524 sprintf (preg_str, "%08lx", (unsigned long) reg);
2527 sprintf (preg_str, "%04x", (unsigned short) (reg & 0xffff));
2530 sprintf (preg_str, "%lx", (unsigned long) reg);
2539 char *paddr_str=get_cell();
2540 switch (sizeof(t_addr))
2544 unsigned long high = (unsigned long) (addr >> thirty_two);
2546 sprintf (paddr_str, "%lx", (unsigned long) (addr & 0xffffffff));
2548 sprintf (paddr_str, "%lx%08lx",
2549 high, (unsigned long) (addr & 0xffffffff));
2553 sprintf (paddr_str, "%lx", (unsigned long) addr);
2556 sprintf (paddr_str, "%x", (unsigned short) (addr & 0xffff));
2559 sprintf (paddr_str,"%lx", (unsigned long) addr);
2568 char *preg_str=get_cell();
2569 switch (sizeof(t_reg))
2573 unsigned long high = (unsigned long) (reg >> thirty_two);
2575 sprintf (preg_str, "%lx", (unsigned long) (reg & 0xffffffff));
2577 sprintf (preg_str, "%lx%08lx",
2578 high, (unsigned long) (reg & 0xffffffff));
2582 sprintf (preg_str, "%lx", (unsigned long) reg);
2585 sprintf (preg_str, "%x", (unsigned short) (reg & 0xffff));
2588 sprintf (preg_str, "%lx", (unsigned long) reg);