1 /* General utility routines for GDB, the GNU debugger.
2 Copyright 1986, 89, 90, 91, 92, 95, 96, 1998 Free Software Foundation, Inc.
4 This file is part of GDB.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
22 #include "gdb_string.h"
34 /* SunOS's curses.h has a '#define reg register' in it. Thank you Sun. */
45 #include "expression.h"
49 #include <readline/readline.h>
51 /* readline defines this. */
54 void (*error_begin_hook) PARAMS ((void));
56 /* Prototypes for local functions */
58 static void vfprintf_maybe_filtered PARAMS ((GDB_FILE *, const char *,
61 static void fputs_maybe_filtered PARAMS ((const char *, GDB_FILE *, int));
63 #if defined (USE_MMALLOC) && !defined (NO_MMCHECK)
64 static void malloc_botch PARAMS ((void));
68 fatal_dump_core PARAMS((char *, ...));
71 prompt_for_continue PARAMS ((void));
74 set_width_command PARAMS ((char *, int, struct cmd_list_element *));
77 set_width PARAMS ((void));
79 /* If this definition isn't overridden by the header files, assume
80 that isatty and fileno exist on this system. */
82 #define ISATTY(FP) (isatty (fileno (FP)))
85 #ifndef GDB_FILE_ISATTY
86 #define GDB_FILE_ISATTY(GDB_FILE_PTR) (gdb_file_isatty(GDB_FILE_PTR))
89 /* Chain of cleanup actions established with make_cleanup,
90 to be executed if an error happens. */
92 static struct cleanup *cleanup_chain; /* cleaned up after a failed command */
93 static struct cleanup *final_cleanup_chain; /* cleaned up when gdb exits */
94 static struct cleanup *run_cleanup_chain; /* cleaned up on each 'run' */
96 /* Nonzero if we have job control. */
100 /* Nonzero means a quit has been requested. */
104 /* Nonzero means quit immediately if Control-C is typed now, rather
105 than waiting until QUIT is executed. Be careful in setting this;
106 code which executes with immediate_quit set has to be very careful
107 about being able to deal with being interrupted at any time. It is
108 almost always better to use QUIT; the only exception I can think of
109 is being able to quit out of a system call (using EINTR loses if
110 the SIGINT happens between the previous QUIT and the system call).
111 To immediately quit in the case in which a SIGINT happens between
112 the previous QUIT and setting immediate_quit (desirable anytime we
113 expect to block), call QUIT after setting immediate_quit. */
117 /* Nonzero means that encoded C++ names should be printed out in their
118 C++ form rather than raw. */
122 /* Nonzero means that encoded C++ names should be printed out in their
123 C++ form even in assembler language displays. If this is set, but
124 DEMANGLE is zero, names are printed raw, i.e. DEMANGLE controls. */
126 int asm_demangle = 0;
128 /* Nonzero means that strings with character values >0x7F should be printed
129 as octal escapes. Zero means just print the value (e.g. it's an
130 international character, and the terminal or window can cope.) */
132 int sevenbit_strings = 0;
134 /* String to be printed before error messages, if any. */
136 char *error_pre_print;
138 /* String to be printed before quit messages, if any. */
140 char *quit_pre_print;
142 /* String to be printed before warning messages, if any. */
144 char *warning_pre_print = "\nwarning: ";
146 int pagination_enabled = 1;
149 /* Add a new cleanup to the cleanup_chain,
150 and return the previous chain pointer
151 to be passed later to do_cleanups or discard_cleanups.
152 Args are FUNCTION to clean up with, and ARG to pass to it. */
155 make_cleanup (function, arg)
156 void (*function) PARAMS ((PTR));
159 return make_my_cleanup (&cleanup_chain, function, arg);
163 make_final_cleanup (function, arg)
164 void (*function) PARAMS ((PTR));
167 return make_my_cleanup (&final_cleanup_chain, function, arg);
171 make_run_cleanup (function, arg)
172 void (*function) PARAMS ((PTR));
175 return make_my_cleanup (&run_cleanup_chain, function, arg);
182 freeargv ((char**) arg);
186 make_cleanup_freeargv (arg)
189 return make_my_cleanup (&cleanup_chain, do_freeargv, arg);
193 make_my_cleanup (pmy_chain, function, arg)
194 struct cleanup **pmy_chain;
195 void (*function) PARAMS ((PTR));
198 register struct cleanup *new
199 = (struct cleanup *) xmalloc (sizeof (struct cleanup));
200 register struct cleanup *old_chain = *pmy_chain;
202 new->next = *pmy_chain;
203 new->function = function;
210 /* Discard cleanups and do the actions they describe
211 until we get back to the point OLD_CHAIN in the cleanup_chain. */
214 do_cleanups (old_chain)
215 register struct cleanup *old_chain;
217 do_my_cleanups (&cleanup_chain, old_chain);
221 do_final_cleanups (old_chain)
222 register struct cleanup *old_chain;
224 do_my_cleanups (&final_cleanup_chain, old_chain);
228 do_run_cleanups (old_chain)
229 register struct cleanup *old_chain;
231 do_my_cleanups (&run_cleanup_chain, old_chain);
235 do_my_cleanups (pmy_chain, old_chain)
236 register struct cleanup **pmy_chain;
237 register struct cleanup *old_chain;
239 register struct cleanup *ptr;
240 while ((ptr = *pmy_chain) != old_chain)
242 *pmy_chain = ptr->next; /* Do this first incase recursion */
243 (*ptr->function) (ptr->arg);
248 /* Discard cleanups, not doing the actions they describe,
249 until we get back to the point OLD_CHAIN in the cleanup_chain. */
252 discard_cleanups (old_chain)
253 register struct cleanup *old_chain;
255 discard_my_cleanups (&cleanup_chain, old_chain);
259 discard_final_cleanups (old_chain)
260 register struct cleanup *old_chain;
262 discard_my_cleanups (&final_cleanup_chain, old_chain);
266 discard_my_cleanups (pmy_chain, old_chain)
267 register struct cleanup **pmy_chain;
268 register struct cleanup *old_chain;
270 register struct cleanup *ptr;
271 while ((ptr = *pmy_chain) != old_chain)
273 *pmy_chain = ptr->next;
278 /* Set the cleanup_chain to 0, and return the old cleanup chain. */
282 return save_my_cleanups (&cleanup_chain);
286 save_final_cleanups ()
288 return save_my_cleanups (&final_cleanup_chain);
292 save_my_cleanups (pmy_chain)
293 struct cleanup **pmy_chain;
295 struct cleanup *old_chain = *pmy_chain;
301 /* Restore the cleanup chain from a previously saved chain. */
303 restore_cleanups (chain)
304 struct cleanup *chain;
306 restore_my_cleanups (&cleanup_chain, chain);
310 restore_final_cleanups (chain)
311 struct cleanup *chain;
313 restore_my_cleanups (&final_cleanup_chain, chain);
317 restore_my_cleanups (pmy_chain, chain)
318 struct cleanup **pmy_chain;
319 struct cleanup *chain;
324 /* This function is useful for cleanups.
328 old_chain = make_cleanup (free_current_contents, &foo);
330 to arrange to free the object thus allocated. */
333 free_current_contents (location)
339 /* Provide a known function that does nothing, to use as a base for
340 for a possibly long chain of cleanups. This is useful where we
341 use the cleanup chain for handling normal cleanups as well as dealing
342 with cleanups that need to be done as a result of a call to error().
343 In such cases, we may not be certain where the first cleanup is, unless
344 we have a do-nothing one to always use as the base. */
354 /* Print a warning message. Way to use this is to call warning_begin,
355 output the warning message (use unfiltered output to gdb_stderr),
356 ending in a newline. There is not currently a warning_end that you
357 call afterwards, but such a thing might be added if it is useful
358 for a GUI to separate warning messages from other output.
360 FIXME: Why do warnings use unfiltered output and errors filtered?
361 Is this anything other than a historical accident? */
366 target_terminal_ours ();
367 wrap_here(""); /* Force out any buffered output */
368 gdb_flush (gdb_stdout);
369 if (warning_pre_print)
370 fprintf_unfiltered (gdb_stderr, warning_pre_print);
373 /* Print a warning message.
374 The first argument STRING is the warning message, used as a fprintf string,
375 and the remaining args are passed as arguments to it.
376 The primary difference between warnings and errors is that a warning
377 does not force the return to command level. */
381 #ifdef ANSI_PROTOTYPES
382 warning (const char *string, ...)
389 #ifdef ANSI_PROTOTYPES
390 va_start (args, string);
395 string = va_arg (args, char *);
398 (*warning_hook) (string, args);
402 vfprintf_unfiltered (gdb_stderr, string, args);
403 fprintf_unfiltered (gdb_stderr, "\n");
408 /* Start the printing of an error message. Way to use this is to call
409 this, output the error message (use filtered output to gdb_stderr
410 (FIXME: Some callers, like memory_error, use gdb_stdout)), ending
411 in a newline, and then call return_to_top_level (RETURN_ERROR).
412 error() provides a convenient way to do this for the special case
413 that the error message can be formatted with a single printf call,
414 but this is more general. */
418 if (error_begin_hook)
421 target_terminal_ours ();
422 wrap_here (""); /* Force out any buffered output */
423 gdb_flush (gdb_stdout);
425 annotate_error_begin ();
428 fprintf_filtered (gdb_stderr, error_pre_print);
431 /* Print an error message and return to command level.
432 The first argument STRING is the error message, used as a fprintf string,
433 and the remaining args are passed as arguments to it. */
437 #ifdef ANSI_PROTOTYPES
438 error (const char *string, ...)
445 #ifdef ANSI_PROTOTYPES
446 va_start (args, string);
455 #ifdef ANSI_PROTOTYPES
456 vfprintf_filtered (gdb_stderr, string, args);
461 string1 = va_arg (args, char *);
462 vfprintf_filtered (gdb_stderr, string1, args);
465 fprintf_filtered (gdb_stderr, "\n");
467 return_to_top_level (RETURN_ERROR);
472 /* Print an error message and exit reporting failure.
473 This is for a error that we cannot continue from.
474 The arguments are printed a la printf.
476 This function cannot be declared volatile (NORETURN) in an
477 ANSI environment because exit() is not declared volatile. */
481 #ifdef ANSI_PROTOTYPES
482 fatal (char *string, ...)
489 #ifdef ANSI_PROTOTYPES
490 va_start (args, string);
494 string = va_arg (args, char *);
496 fprintf_unfiltered (gdb_stderr, "\ngdb: ");
497 vfprintf_unfiltered (gdb_stderr, string, args);
498 fprintf_unfiltered (gdb_stderr, "\n");
503 /* Print an error message and exit, dumping core.
504 The arguments are printed a la printf (). */
508 #ifdef ANSI_PROTOTYPES
509 fatal_dump_core (char *string, ...)
511 fatal_dump_core (va_alist)
516 #ifdef ANSI_PROTOTYPES
517 va_start (args, string);
522 string = va_arg (args, char *);
524 /* "internal error" is always correct, since GDB should never dump
525 core, no matter what the input. */
526 fprintf_unfiltered (gdb_stderr, "\ngdb internal error: ");
527 vfprintf_unfiltered (gdb_stderr, string, args);
528 fprintf_unfiltered (gdb_stderr, "\n");
531 signal (SIGQUIT, SIG_DFL);
532 kill (getpid (), SIGQUIT);
533 /* We should never get here, but just in case... */
537 /* The strerror() function can return NULL for errno values that are
538 out of range. Provide a "safe" version that always returns a
542 safe_strerror (errnum)
548 if ((msg = strerror (errnum)) == NULL)
550 sprintf (buf, "(undocumented errno %d)", errnum);
556 /* The strsignal() function can return NULL for signal values that are
557 out of range. Provide a "safe" version that always returns a
561 safe_strsignal (signo)
567 if ((msg = strsignal (signo)) == NULL)
569 sprintf (buf, "(undocumented signal %d)", signo);
576 /* Print the system error message for errno, and also mention STRING
577 as the file name for which the error was encountered.
578 Then return to command level. */
581 perror_with_name (string)
587 err = safe_strerror (errno);
588 combined = (char *) alloca (strlen (err) + strlen (string) + 3);
589 strcpy (combined, string);
590 strcat (combined, ": ");
591 strcat (combined, err);
593 /* I understand setting these is a matter of taste. Still, some people
594 may clear errno but not know about bfd_error. Doing this here is not
596 bfd_set_error (bfd_error_no_error);
599 error ("%s.", combined);
602 /* Print the system error message for ERRCODE, and also mention STRING
603 as the file name for which the error was encountered. */
606 print_sys_errmsg (string, errcode)
613 err = safe_strerror (errcode);
614 combined = (char *) alloca (strlen (err) + strlen (string) + 3);
615 strcpy (combined, string);
616 strcat (combined, ": ");
617 strcat (combined, err);
619 /* We want anything which was printed on stdout to come out first, before
621 gdb_flush (gdb_stdout);
622 fprintf_unfiltered (gdb_stderr, "%s.\n", combined);
625 /* Control C eventually causes this to be called, at a convenient time. */
630 serial_t gdb_stdout_serial = serial_fdopen (1);
632 target_terminal_ours ();
634 /* We want all output to appear now, before we print "Quit". We
635 have 3 levels of buffering we have to flush (it's possible that
636 some of these should be changed to flush the lower-level ones
639 /* 1. The _filtered buffer. */
640 wrap_here ((char *)0);
642 /* 2. The stdio buffer. */
643 gdb_flush (gdb_stdout);
644 gdb_flush (gdb_stderr);
646 /* 3. The system-level buffer. */
647 SERIAL_DRAIN_OUTPUT (gdb_stdout_serial);
648 SERIAL_UN_FDOPEN (gdb_stdout_serial);
650 annotate_error_begin ();
652 /* Don't use *_filtered; we don't want to prompt the user to continue. */
654 fprintf_unfiltered (gdb_stderr, quit_pre_print);
657 /* If there is no terminal switching for this target, then we can't
658 possibly get screwed by the lack of job control. */
659 || current_target.to_terminal_ours == NULL)
660 fprintf_unfiltered (gdb_stderr, "Quit\n");
662 fprintf_unfiltered (gdb_stderr,
663 "Quit (expect signal SIGINT when the program is resumed)\n");
664 return_to_top_level (RETURN_QUIT);
668 #if defined(__GO32__)
670 /* In the absence of signals, poll keyboard for a quit.
671 Called from #define QUIT pollquit() in xm-go32.h. */
686 /* We just ignore it */
687 /* FIXME!! Don't think this actually works! */
688 fprintf_unfiltered (gdb_stderr, "CTRL-A to quit, CTRL-B to quit harder\n");
693 #elif defined(_MSC_VER) /* should test for wingdb instead? */
696 * Windows translates all keyboard and mouse events
697 * into a message which is appended to the message
698 * queue for the process.
703 int k = win32pollquit();
710 #else /* !defined(__GO32__) && !defined(_MSC_VER) */
714 /* Done by signals */
717 #endif /* !defined(__GO32__) && !defined(_MSC_VER) */
719 /* Control C comes here */
726 /* Restore the signal handler. Harmless with BSD-style signals, needed
727 for System V-style signals. So just always do it, rather than worrying
728 about USG defines and stuff like that. */
729 signal (signo, request_quit);
740 /* Memory management stuff (malloc friends). */
742 /* Make a substitute size_t for non-ANSI compilers. */
744 #ifndef HAVE_STDDEF_H
746 #define size_t unsigned int
750 #if !defined (USE_MMALLOC)
757 return malloc (size);
761 mrealloc (md, ptr, size)
766 if (ptr == 0) /* Guard against old realloc's */
767 return malloc (size);
769 return realloc (ptr, size);
780 #endif /* USE_MMALLOC */
782 #if !defined (USE_MMALLOC) || defined (NO_MMCHECK)
790 #else /* Have mmalloc and want corruption checking */
795 fatal_dump_core ("Memory corruption");
798 /* Attempt to install hooks in mmalloc/mrealloc/mfree for the heap specified
799 by MD, to detect memory corruption. Note that MD may be NULL to specify
800 the default heap that grows via sbrk.
802 Note that for freshly created regions, we must call mmcheckf prior to any
803 mallocs in the region. Otherwise, any region which was allocated prior to
804 installing the checking hooks, which is later reallocated or freed, will
805 fail the checks! The mmcheck function only allows initial hooks to be
806 installed before the first mmalloc. However, anytime after we have called
807 mmcheck the first time to install the checking hooks, we can call it again
808 to update the function pointer to the memory corruption handler.
810 Returns zero on failure, non-zero on success. */
812 #ifndef MMCHECK_FORCE
813 #define MMCHECK_FORCE 0
820 if (!mmcheckf (md, malloc_botch, MMCHECK_FORCE))
822 /* Don't use warning(), which relies on current_target being set
823 to something other than dummy_target, until after
824 initialize_all_files(). */
827 (gdb_stderr, "warning: failed to install memory consistency checks; ");
829 (gdb_stderr, "configuration should define NO_MMCHECK or MMCHECK_FORCE\n");
835 #endif /* Have mmalloc and want corruption checking */
837 /* Called when a memory allocation fails, with the number of bytes of
838 memory requested in SIZE. */
846 fatal ("virtual memory exhausted: can't allocate %ld bytes.", size);
850 fatal ("virtual memory exhausted.");
854 /* Like mmalloc but get error if no storage available, and protect against
855 the caller wanting to allocate zero bytes. Whether to return NULL for
856 a zero byte request, or translate the request into a request for one
857 byte of zero'd storage, is a religious issue. */
870 else if ((val = mmalloc (md, size)) == NULL)
877 /* Like mrealloc but get error if no storage available. */
880 xmrealloc (md, ptr, size)
889 val = mrealloc (md, ptr, size);
893 val = mmalloc (md, size);
902 /* Like malloc but get error if no storage available, and protect against
903 the caller wanting to allocate zero bytes. */
909 return (xmmalloc ((PTR) NULL, size));
912 /* Like mrealloc but get error if no storage available. */
919 return (xmrealloc ((PTR) NULL, ptr, size));
923 /* My replacement for the read system call.
924 Used like `read' but keeps going if `read' returns too soon. */
927 myread (desc, addr, len)
937 val = read (desc, addr, len);
948 /* Make a copy of the string at PTR with SIZE characters
949 (and add a null character at the end in the copy).
950 Uses malloc to get the space. Returns the address of the copy. */
953 savestring (ptr, size)
957 register char *p = (char *) xmalloc (size + 1);
958 memcpy (p, ptr, size);
964 msavestring (md, ptr, size)
969 register char *p = (char *) xmmalloc (md, size + 1);
970 memcpy (p, ptr, size);
975 /* The "const" is so it compiles under DGUX (which prototypes strsave
976 in <string.h>. FIXME: This should be named "xstrsave", shouldn't it?
977 Doesn't real strsave return NULL if out of memory? */
982 return savestring (ptr, strlen (ptr));
990 return (msavestring (md, ptr, strlen (ptr)));
994 print_spaces (n, file)
996 register GDB_FILE *file;
998 fputs_unfiltered (n_spaces (n), file);
1001 /* Print a host address. */
1004 gdb_print_address (addr, stream)
1009 /* We could use the %p conversion specifier to fprintf if we had any
1010 way of knowing whether this host supports it. But the following
1011 should work on the Alpha and on 32 bit machines. */
1013 fprintf_filtered (stream, "0x%lx", (unsigned long)addr);
1016 /* Ask user a y-or-n question and return 1 iff answer is yes.
1017 Takes three args which are given to printf to print the question.
1018 The first, a control string, should end in "? ".
1019 It should not say how to answer, because we do that. */
1023 #ifdef ANSI_PROTOTYPES
1024 query (char *ctlstr, ...)
1031 register int answer;
1035 #ifdef ANSI_PROTOTYPES
1036 va_start (args, ctlstr);
1040 ctlstr = va_arg (args, char *);
1045 return query_hook (ctlstr, args);
1048 /* Automatically answer "yes" if input is not from a terminal. */
1049 if (!input_from_terminal_p ())
1052 /* FIXME Automatically answer "yes" if called from MacGDB. */
1059 wrap_here (""); /* Flush any buffered output */
1060 gdb_flush (gdb_stdout);
1062 if (annotation_level > 1)
1063 printf_filtered ("\n\032\032pre-query\n");
1065 vfprintf_filtered (gdb_stdout, ctlstr, args);
1066 printf_filtered ("(y or n) ");
1068 if (annotation_level > 1)
1069 printf_filtered ("\n\032\032query\n");
1072 /* If not in MacGDB, move to a new line so the entered line doesn't
1073 have a prompt on the front of it. */
1075 fputs_unfiltered ("\n", gdb_stdout);
1079 gdb_flush (gdb_stdout);
1082 if (!tui_version || cmdWin == tuiWinWithFocus())
1084 answer = fgetc (stdin);
1088 answer = (unsigned char)tuiBufferGetc();
1091 clearerr (stdin); /* in case of C-d */
1092 if (answer == EOF) /* C-d */
1097 /* Eat rest of input line, to EOF or newline */
1098 if ((answer != '\n') || (tui_version && answer != '\r'))
1102 if (!tui_version || cmdWin == tuiWinWithFocus())
1104 ans2 = fgetc (stdin);
1108 ans2 = (unsigned char)tuiBufferGetc();
1112 while (ans2 != EOF && ans2 != '\n' && ans2 != '\r');
1113 TUIDO(((TuiOpaqueFuncPtr)tui_vStartNewLines, 1));
1127 printf_filtered ("Please answer y or n.\n");
1130 if (annotation_level > 1)
1131 printf_filtered ("\n\032\032post-query\n");
1136 /* Parse a C escape sequence. STRING_PTR points to a variable
1137 containing a pointer to the string to parse. That pointer
1138 should point to the character after the \. That pointer
1139 is updated past the characters we use. The value of the
1140 escape sequence is returned.
1142 A negative value means the sequence \ newline was seen,
1143 which is supposed to be equivalent to nothing at all.
1145 If \ is followed by a null character, we return a negative
1146 value and leave the string pointer pointing at the null character.
1148 If \ is followed by 000, we return 0 and leave the string pointer
1149 after the zeros. A value of 0 does not mean end of string. */
1152 parse_escape (string_ptr)
1155 register int c = *(*string_ptr)++;
1159 return 007; /* Bell (alert) char */
1162 case 'e': /* Escape character */
1180 c = *(*string_ptr)++;
1182 c = parse_escape (string_ptr);
1185 return (c & 0200) | (c & 037);
1196 register int i = c - '0';
1197 register int count = 0;
1200 if ((c = *(*string_ptr)++) >= '0' && c <= '7')
1218 /* Print the character C on STREAM as part of the contents of a literal
1219 string whose delimiter is QUOTER. Note that this routine should only
1220 be call for printing things which are independent of the language
1221 of the program being debugged. */
1224 gdb_printchar (c, stream, quoter)
1230 c &= 0xFF; /* Avoid sign bit follies */
1232 if ( c < 0x20 || /* Low control chars */
1233 (c >= 0x7F && c < 0xA0) || /* DEL, High controls */
1234 (sevenbit_strings && c >= 0x80)) { /* high order bit set */
1238 fputs_filtered ("\\n", stream);
1241 fputs_filtered ("\\b", stream);
1244 fputs_filtered ("\\t", stream);
1247 fputs_filtered ("\\f", stream);
1250 fputs_filtered ("\\r", stream);
1253 fputs_filtered ("\\e", stream);
1256 fputs_filtered ("\\a", stream);
1259 fprintf_filtered (stream, "\\%.3o", (unsigned int) c);
1263 if (c == '\\' || c == quoter)
1264 fputs_filtered ("\\", stream);
1265 fprintf_filtered (stream, "%c", c);
1270 /* Number of lines per page or UINT_MAX if paging is disabled. */
1271 static unsigned int lines_per_page;
1272 /* Number of chars per line or UNIT_MAX is line folding is disabled. */
1273 static unsigned int chars_per_line;
1274 /* Current count of lines printed on this page, chars on this line. */
1275 static unsigned int lines_printed, chars_printed;
1277 /* Buffer and start column of buffered text, for doing smarter word-
1278 wrapping. When someone calls wrap_here(), we start buffering output
1279 that comes through fputs_filtered(). If we see a newline, we just
1280 spit it out and forget about the wrap_here(). If we see another
1281 wrap_here(), we spit it out and remember the newer one. If we see
1282 the end of the line, we spit out a newline, the indent, and then
1283 the buffered output. */
1285 /* Malloc'd buffer with chars_per_line+2 bytes. Contains characters which
1286 are waiting to be output (they have already been counted in chars_printed).
1287 When wrap_buffer[0] is null, the buffer is empty. */
1288 static char *wrap_buffer;
1290 /* Pointer in wrap_buffer to the next character to fill. */
1291 static char *wrap_pointer;
1293 /* String to indent by if the wrap occurs. Must not be NULL if wrap_column
1295 static char *wrap_indent;
1297 /* Column number on the screen where wrap_buffer begins, or 0 if wrapping
1298 is not in effect. */
1299 static int wrap_column;
1302 /* Inialize the lines and chars per page */
1307 if (tui_version && m_winPtrNotNull(cmdWin))
1309 lines_per_page = cmdWin->generic.height;
1310 chars_per_line = cmdWin->generic.width;
1315 /* These defaults will be used if we are unable to get the correct
1316 values from termcap. */
1317 #if defined(__GO32__)
1318 lines_per_page = ScreenRows();
1319 chars_per_line = ScreenCols();
1321 lines_per_page = 24;
1322 chars_per_line = 80;
1324 #if !defined (MPW) && !defined (_WIN32)
1325 /* No termcap under MPW, although might be cool to do something
1326 by looking at worksheet or console window sizes. */
1327 /* Initialize the screen height and width from termcap. */
1329 char *termtype = getenv ("TERM");
1331 /* Positive means success, nonpositive means failure. */
1334 /* 2048 is large enough for all known terminals, according to the
1335 GNU termcap manual. */
1336 char term_buffer[2048];
1340 status = tgetent (term_buffer, termtype);
1344 int running_in_emacs = getenv ("EMACS") != NULL;
1346 val = tgetnum ("li");
1347 if (val >= 0 && !running_in_emacs)
1348 lines_per_page = val;
1350 /* The number of lines per page is not mentioned
1351 in the terminal description. This probably means
1352 that paging is not useful (e.g. emacs shell window),
1353 so disable paging. */
1354 lines_per_page = UINT_MAX;
1356 val = tgetnum ("co");
1358 chars_per_line = val;
1364 #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER)
1366 /* If there is a better way to determine the window size, use it. */
1367 SIGWINCH_HANDLER (SIGWINCH);
1370 /* If the output is not a terminal, don't paginate it. */
1371 if (!GDB_FILE_ISATTY (gdb_stdout))
1372 lines_per_page = UINT_MAX;
1373 } /* the command_line_version */
1380 if (chars_per_line == 0)
1385 wrap_buffer = (char *) xmalloc (chars_per_line + 2);
1386 wrap_buffer[0] = '\0';
1389 wrap_buffer = (char *) xrealloc (wrap_buffer, chars_per_line + 2);
1390 wrap_pointer = wrap_buffer; /* Start it at the beginning */
1395 set_width_command (args, from_tty, c)
1398 struct cmd_list_element *c;
1403 /* Wait, so the user can read what's on the screen. Prompt the user
1404 to continue by pressing RETURN. */
1407 prompt_for_continue ()
1410 char cont_prompt[120];
1412 if (annotation_level > 1)
1413 printf_unfiltered ("\n\032\032pre-prompt-for-continue\n");
1415 strcpy (cont_prompt,
1416 "---Type <return> to continue, or q <return> to quit---");
1417 if (annotation_level > 1)
1418 strcat (cont_prompt, "\n\032\032prompt-for-continue\n");
1420 /* We must do this *before* we call gdb_readline, else it will eventually
1421 call us -- thinking that we're trying to print beyond the end of the
1423 reinitialize_more_filter ();
1426 /* On a real operating system, the user can quit with SIGINT.
1429 'q' is provided on all systems so users don't have to change habits
1430 from system to system, and because telling them what to do in
1431 the prompt is more user-friendly than expecting them to think of
1433 /* Call readline, not gdb_readline, because GO32 readline handles control-C
1434 whereas control-C to gdb_readline will cause the user to get dumped
1436 ignore = readline (cont_prompt);
1438 if (annotation_level > 1)
1439 printf_unfiltered ("\n\032\032post-prompt-for-continue\n");
1444 while (*p == ' ' || *p == '\t')
1447 request_quit (SIGINT);
1452 /* Now we have to do this again, so that GDB will know that it doesn't
1453 need to save the ---Type <return>--- line at the top of the screen. */
1454 reinitialize_more_filter ();
1456 dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */
1459 /* Reinitialize filter; ie. tell it to reset to original values. */
1462 reinitialize_more_filter ()
1468 /* Indicate that if the next sequence of characters overflows the line,
1469 a newline should be inserted here rather than when it hits the end.
1470 If INDENT is non-null, it is a string to be printed to indent the
1471 wrapped part on the next line. INDENT must remain accessible until
1472 the next call to wrap_here() or until a newline is printed through
1475 If the line is already overfull, we immediately print a newline and
1476 the indentation, and disable further wrapping.
1478 If we don't know the width of lines, but we know the page height,
1479 we must not wrap words, but should still keep track of newlines
1480 that were explicitly printed.
1482 INDENT should not contain tabs, as that will mess up the char count
1483 on the next line. FIXME.
1485 This routine is guaranteed to force out any output which has been
1486 squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be
1487 used to force out output from the wrap_buffer. */
1493 /* This should have been allocated, but be paranoid anyway. */
1499 *wrap_pointer = '\0';
1500 fputs_unfiltered (wrap_buffer, gdb_stdout);
1502 wrap_pointer = wrap_buffer;
1503 wrap_buffer[0] = '\0';
1504 if (chars_per_line == UINT_MAX) /* No line overflow checking */
1508 else if (chars_printed >= chars_per_line)
1510 puts_filtered ("\n");
1512 puts_filtered (indent);
1517 wrap_column = chars_printed;
1521 wrap_indent = indent;
1525 /* Ensure that whatever gets printed next, using the filtered output
1526 commands, starts at the beginning of the line. I.E. if there is
1527 any pending output for the current line, flush it and start a new
1528 line. Otherwise do nothing. */
1533 if (chars_printed > 0)
1535 puts_filtered ("\n");
1540 /* ``struct gdb_file'' implementation that maps directly onto
1541 <stdio.h>'s FILE. */
1543 static gdb_file_fputs_ftype stdio_file_fputs;
1544 static gdb_file_isatty_ftype stdio_file_isatty;
1545 static gdb_file_delete_ftype stdio_file_delete;
1546 static struct gdb_file *stdio_file_new PARAMS ((FILE *file, int close_p));
1547 static gdb_file_flush_ftype stdio_file_flush;
1549 static int stdio_file_magic;
1558 static struct gdb_file *
1559 stdio_file_new (file, close_p)
1563 struct gdb_file *gdb_file = gdb_file_new ();
1564 struct stdio_file *stdio = xmalloc (sizeof (struct stdio_file));
1565 stdio->magic = &stdio_file_magic;
1567 stdio->close_p = close_p;
1568 set_gdb_file_data (gdb_file, stdio, stdio_file_delete);
1569 set_gdb_file_flush (gdb_file, stdio_file_flush);
1570 set_gdb_file_fputs (gdb_file, stdio_file_fputs);
1571 set_gdb_file_isatty (gdb_file, stdio_file_isatty);
1576 stdio_file_delete (file)
1577 struct gdb_file *file;
1579 struct stdio_file *stdio = gdb_file_data (file);
1580 if (stdio->magic != &stdio_file_magic)
1581 error ("Internal error: bad magic number");
1584 fclose (stdio->file);
1590 stdio_file_flush (file)
1591 struct gdb_file *file;
1593 struct stdio_file *stdio = gdb_file_data (file);
1594 if (stdio->magic != &stdio_file_magic)
1595 error ("Internal error: bad magic number");
1596 fflush (stdio->file);
1600 stdio_file_fputs (linebuffer, file)
1601 const char *linebuffer;
1602 struct gdb_file *file;
1604 struct stdio_file *stdio = gdb_file_data (file);
1605 if (stdio->magic != &stdio_file_magic)
1606 error ("Internal error: bad magic number");
1607 fputs (linebuffer, stdio->file);
1611 stdio_file_isatty (file)
1612 struct gdb_file *file;
1614 struct stdio_file *stdio = gdb_file_data (file);
1615 if (stdio->magic != &stdio_file_magic)
1616 error ("Internal error: bad magic number");
1617 return (isatty (fileno (stdio->file)));
1620 /* Like fdopen(). Create a gdb_file from a previously opened FILE. */
1623 stdio_fileopen (file)
1626 return stdio_file_new (file, 0);
1630 /* A ``struct gdb_file'' that is compatible with all the legacy
1633 static gdb_file_flush_ftype tui_file_flush;
1634 extern gdb_file_fputs_ftype tui_file_fputs;
1635 static gdb_file_isatty_ftype tui_file_isatty;
1636 static gdb_file_delete_ftype tui_file_delete;
1637 static struct gdb_file *tui_file_new PARAMS ((void));
1638 static int tui_file_magic;
1640 static struct gdb_file *
1643 struct tui_stream *tui = xmalloc (sizeof (struct tui_stream));
1644 struct gdb_file *file = gdb_file_new ();
1645 set_gdb_file_data (file, tui, tui_file_delete);
1646 set_gdb_file_flush (file, tui_file_flush);
1647 set_gdb_file_fputs (file, tui_file_fputs);
1648 set_gdb_file_isatty (file, tui_file_isatty);
1649 tui->ts_magic = &tui_file_magic;
1654 tui_file_delete (file)
1655 struct gdb_file *file;
1657 struct tui_stream *tmpstream = gdb_file_data (file);
1658 if (tmpstream->ts_magic != &tui_file_magic)
1659 error ("Internal error: bad magic number");
1660 if ((tmpstream->ts_streamtype == astring) &&
1661 (tmpstream->ts_strbuf != NULL))
1663 free (tmpstream->ts_strbuf);
1669 tui_fileopen (stream)
1672 struct gdb_file *file = tui_file_new ();
1673 struct tui_stream *tmpstream = gdb_file_data (file);
1674 tmpstream->ts_streamtype = afile;
1675 tmpstream->ts_filestream = stream;
1676 tmpstream->ts_strbuf = NULL;
1677 tmpstream->ts_buflen = 0;
1682 tui_file_isatty (file)
1683 struct gdb_file *file;
1685 struct tui_stream *stream = gdb_file_data (file);
1686 if (stream->ts_magic != &tui_file_magic)
1687 error ("Internal error: bad magic number");
1688 if (stream->ts_streamtype == afile)
1689 return (isatty(fileno(stream->ts_filestream)));
1694 gdb_file_init_astring (n)
1697 struct gdb_file *file = tui_file_new ();
1698 struct tui_stream *tmpstream = gdb_file_data (file);
1699 if (tmpstream->ts_magic != &tui_file_magic)
1700 error ("Internal error: bad magic number");
1702 tmpstream->ts_streamtype = astring;
1703 tmpstream->ts_filestream = NULL;
1706 tmpstream->ts_strbuf = xmalloc ((n + 1)*sizeof(char));
1707 tmpstream->ts_strbuf[0] = '\0';
1710 tmpstream->ts_strbuf = NULL;
1711 tmpstream->ts_buflen = n;
1717 gdb_file_deallocate (streamptr)
1718 GDB_FILE **streamptr;
1720 gdb_file_delete (*streamptr);
1725 gdb_file_get_strbuf (file)
1728 struct tui_stream *stream = gdb_file_data (file);
1729 if (stream->ts_magic != &tui_file_magic)
1730 error ("Internal error: bad magic number");
1731 return (stream->ts_strbuf);
1734 /* adjust the length of the buffer by the amount necessary
1735 to accomodate appending a string of length N to the buffer contents */
1737 gdb_file_adjust_strbuf (n, file)
1741 struct tui_stream *stream = gdb_file_data (file);
1743 if (stream->ts_magic != &tui_file_magic)
1744 error ("Internal error: bad magic number");
1746 if (stream->ts_streamtype != astring)
1749 if (stream->ts_strbuf)
1751 /* There is already a buffer allocated */
1752 non_null_chars = strlen(stream->ts_strbuf);
1754 if (n > (stream->ts_buflen - non_null_chars - 1))
1756 stream->ts_buflen = n + non_null_chars + 1;
1757 stream->ts_strbuf = xrealloc (stream->ts_strbuf, stream->ts_buflen);
1761 /* No buffer yet, so allocate one of the desired size */
1762 stream->ts_strbuf = xmalloc ((n + 1) * sizeof (char));
1766 gdb_fopen (name, mode)
1770 FILE *f = fopen (name, mode);
1773 return stdio_file_new (f, 1);
1777 tui_file_flush (file)
1780 struct tui_stream *stream = gdb_file_data (file);
1781 if (stream->ts_magic != &tui_file_magic)
1782 error ("Internal error: bad magic number");
1784 && (file == gdb_stdout
1785 || file == gdb_stderr))
1791 fflush (stream->ts_filestream);
1795 gdb_fclose(streamptr)
1796 GDB_FILE **streamptr;
1798 gdb_file_delete (*streamptr);
1803 /* Implement the ``struct gdb_file'' object. */
1805 static gdb_file_isatty_ftype null_file_isatty;
1806 static gdb_file_fputs_ftype null_file_fputs;
1807 static gdb_file_flush_ftype null_file_flush;
1808 static gdb_file_delete_ftype null_file_delete;
1812 gdb_file_flush_ftype *to_flush;
1813 gdb_file_fputs_ftype *to_fputs;
1814 gdb_file_delete_ftype *to_delete;
1815 gdb_file_isatty_ftype *to_isatty;
1822 struct gdb_file *file = xmalloc (sizeof (struct gdb_file));
1823 set_gdb_file_data (file, NULL, null_file_delete);
1824 set_gdb_file_flush (file, null_file_flush);
1825 set_gdb_file_fputs (file, null_file_fputs);
1826 set_gdb_file_isatty (file, null_file_isatty);
1831 gdb_file_delete (file)
1832 struct gdb_file *file;
1834 file->to_delete (file);
1839 null_file_isatty (file)
1840 struct gdb_file *file;
1846 null_file_flush (file)
1847 struct gdb_file *file;
1853 null_file_fputs (buf, file)
1855 struct gdb_file *file;
1861 null_file_delete (file)
1862 struct gdb_file *file;
1868 gdb_file_data (file)
1869 struct gdb_file *file;
1871 return file->to_data;
1876 struct gdb_file *file;
1878 file->to_flush (file);
1882 gdb_file_isatty (file)
1883 struct gdb_file *file;
1885 return file->to_isatty (file);
1889 fputs_unfiltered (buf, file)
1891 struct gdb_file *file;
1893 file->to_fputs (buf, file);
1897 set_gdb_file_flush (file, flush)
1898 struct gdb_file *file;
1899 gdb_file_flush_ftype *flush;
1901 file->to_flush = flush;
1905 set_gdb_file_isatty (file, isatty)
1906 struct gdb_file *file;
1907 gdb_file_isatty_ftype *isatty;
1909 file->to_isatty = isatty;
1913 set_gdb_file_fputs (file, fputs)
1914 struct gdb_file *file;
1915 gdb_file_fputs_ftype *fputs;
1917 file->to_fputs = fputs;
1921 set_gdb_file_data (file, data, delete)
1922 struct gdb_file *file;
1924 gdb_file_delete_ftype *delete;
1926 file->to_data = data;
1927 file->to_delete = delete;
1930 /* Like fputs but if FILTER is true, pause after every screenful.
1932 Regardless of FILTER can wrap at points other than the final
1933 character of a line.
1935 Unlike fputs, fputs_maybe_filtered does not return a value.
1936 It is OK for LINEBUFFER to be NULL, in which case just don't print
1939 Note that a longjmp to top level may occur in this routine (only if
1940 FILTER is true) (since prompt_for_continue may do so) so this
1941 routine should not be called when cleanups are not in place. */
1944 fputs_maybe_filtered (linebuffer, stream, filter)
1945 const char *linebuffer;
1949 const char *lineptr;
1951 if (linebuffer == 0)
1954 /* Don't do any filtering if it is disabled. */
1955 if ((stream != gdb_stdout) || !pagination_enabled
1956 || (lines_per_page == UINT_MAX && chars_per_line == UINT_MAX))
1958 fputs_unfiltered (linebuffer, stream);
1962 /* Go through and output each character. Show line extension
1963 when this is necessary; prompt user for new page when this is
1966 lineptr = linebuffer;
1969 /* Possible new page. */
1971 (lines_printed >= lines_per_page - 1))
1972 prompt_for_continue ();
1974 while (*lineptr && *lineptr != '\n')
1976 /* Print a single line. */
1977 if (*lineptr == '\t')
1980 *wrap_pointer++ = '\t';
1982 fputc_unfiltered ('\t', stream);
1983 /* Shifting right by 3 produces the number of tab stops
1984 we have already passed, and then adding one and
1985 shifting left 3 advances to the next tab stop. */
1986 chars_printed = ((chars_printed >> 3) + 1) << 3;
1992 *wrap_pointer++ = *lineptr;
1994 fputc_unfiltered (*lineptr, stream);
1999 if (chars_printed >= chars_per_line)
2001 unsigned int save_chars = chars_printed;
2005 /* If we aren't actually wrapping, don't output newline --
2006 if chars_per_line is right, we probably just overflowed
2007 anyway; if it's wrong, let us keep going. */
2009 fputc_unfiltered ('\n', stream);
2011 /* Possible new page. */
2012 if (lines_printed >= lines_per_page - 1)
2013 prompt_for_continue ();
2015 /* Now output indentation and wrapped string */
2018 fputs_unfiltered (wrap_indent, stream);
2019 *wrap_pointer = '\0'; /* Null-terminate saved stuff */
2020 fputs_unfiltered (wrap_buffer, stream); /* and eject it */
2021 /* FIXME, this strlen is what prevents wrap_indent from
2022 containing tabs. However, if we recurse to print it
2023 and count its chars, we risk trouble if wrap_indent is
2024 longer than (the user settable) chars_per_line.
2025 Note also that this can set chars_printed > chars_per_line
2026 if we are printing a long string. */
2027 chars_printed = strlen (wrap_indent)
2028 + (save_chars - wrap_column);
2029 wrap_pointer = wrap_buffer; /* Reset buffer */
2030 wrap_buffer[0] = '\0';
2031 wrap_column = 0; /* And disable fancy wrap */
2036 if (*lineptr == '\n')
2039 wrap_here ((char *)0); /* Spit out chars, cancel further wraps */
2041 fputc_unfiltered ('\n', stream);
2048 fputs_filtered (linebuffer, stream)
2049 const char *linebuffer;
2052 fputs_maybe_filtered (linebuffer, stream, 1);
2056 putchar_unfiltered (c)
2063 fputs_unfiltered (buf, gdb_stdout);
2068 fputc_unfiltered (c, stream)
2076 fputs_unfiltered (buf, stream);
2081 fputc_filtered (c, stream)
2089 fputs_filtered (buf, stream);
2093 /* puts_debug is like fputs_unfiltered, except it prints special
2094 characters in printable fashion. */
2097 puts_debug (prefix, string, suffix)
2104 /* Print prefix and suffix after each line. */
2105 static int new_line = 1;
2106 static int return_p = 0;
2107 static char *prev_prefix = "";
2108 static char *prev_suffix = "";
2110 if (*string == '\n')
2113 /* If the prefix is changing, print the previous suffix, a new line,
2114 and the new prefix. */
2115 if ((return_p || (strcmp(prev_prefix, prefix) != 0)) && !new_line)
2117 fputs_unfiltered (prev_suffix, gdb_stderr);
2118 fputs_unfiltered ("\n", gdb_stderr);
2119 fputs_unfiltered (prefix, gdb_stderr);
2122 /* Print prefix if we printed a newline during the previous call. */
2126 fputs_unfiltered (prefix, gdb_stderr);
2129 prev_prefix = prefix;
2130 prev_suffix = suffix;
2132 /* Output characters in a printable format. */
2133 while ((ch = *string++) != '\0')
2139 fputc_unfiltered (ch, gdb_stderr);
2142 fprintf_unfiltered (gdb_stderr, "\\x%02x", ch & 0xff);
2145 case '\\': fputs_unfiltered ("\\\\", gdb_stderr); break;
2146 case '\b': fputs_unfiltered ("\\b", gdb_stderr); break;
2147 case '\f': fputs_unfiltered ("\\f", gdb_stderr); break;
2148 case '\n': new_line = 1;
2149 fputs_unfiltered ("\\n", gdb_stderr); break;
2150 case '\r': fputs_unfiltered ("\\r", gdb_stderr); break;
2151 case '\t': fputs_unfiltered ("\\t", gdb_stderr); break;
2152 case '\v': fputs_unfiltered ("\\v", gdb_stderr); break;
2155 return_p = ch == '\r';
2158 /* Print suffix if we printed a newline. */
2161 fputs_unfiltered (suffix, gdb_stderr);
2162 fputs_unfiltered ("\n", gdb_stderr);
2167 /* Print a variable number of ARGS using format FORMAT. If this
2168 information is going to put the amount written (since the last call
2169 to REINITIALIZE_MORE_FILTER or the last page break) over the page size,
2170 call prompt_for_continue to get the users permision to continue.
2172 Unlike fprintf, this function does not return a value.
2174 We implement three variants, vfprintf (takes a vararg list and stream),
2175 fprintf (takes a stream to write on), and printf (the usual).
2177 Note also that a longjmp to top level may occur in this routine
2178 (since prompt_for_continue may do so) so this routine should not be
2179 called when cleanups are not in place. */
2182 vfprintf_maybe_filtered (stream, format, args, filter)
2189 struct cleanup *old_cleanups;
2191 vasprintf (&linebuffer, format, args);
2192 if (linebuffer == NULL)
2194 fputs_unfiltered ("\ngdb: virtual memory exhausted.\n", gdb_stderr);
2197 old_cleanups = make_cleanup (free, linebuffer);
2198 fputs_maybe_filtered (linebuffer, stream, filter);
2199 do_cleanups (old_cleanups);
2204 vfprintf_filtered (stream, format, args)
2209 vfprintf_maybe_filtered (stream, format, args, 1);
2213 vfprintf_unfiltered (stream, format, args)
2219 struct cleanup *old_cleanups;
2221 vasprintf (&linebuffer, format, args);
2222 if (linebuffer == NULL)
2224 fputs_unfiltered ("\ngdb: virtual memory exhausted.\n", gdb_stderr);
2227 old_cleanups = make_cleanup (free, linebuffer);
2228 fputs_unfiltered (linebuffer, stream);
2229 do_cleanups (old_cleanups);
2233 vprintf_filtered (format, args)
2237 vfprintf_maybe_filtered (gdb_stdout, format, args, 1);
2241 vprintf_unfiltered (format, args)
2245 vfprintf_unfiltered (gdb_stdout, format, args);
2250 #ifdef ANSI_PROTOTYPES
2251 fprintf_filtered (GDB_FILE *stream, const char *format, ...)
2253 fprintf_filtered (va_alist)
2258 #ifdef ANSI_PROTOTYPES
2259 va_start (args, format);
2265 stream = va_arg (args, GDB_FILE *);
2266 format = va_arg (args, char *);
2268 vfprintf_filtered (stream, format, args);
2274 #ifdef ANSI_PROTOTYPES
2275 fprintf_unfiltered (GDB_FILE *stream, const char *format, ...)
2277 fprintf_unfiltered (va_alist)
2282 #ifdef ANSI_PROTOTYPES
2283 va_start (args, format);
2289 stream = va_arg (args, GDB_FILE *);
2290 format = va_arg (args, char *);
2292 vfprintf_unfiltered (stream, format, args);
2296 /* Like fprintf_filtered, but prints its result indented.
2297 Called as fprintfi_filtered (spaces, stream, format, ...); */
2301 #ifdef ANSI_PROTOTYPES
2302 fprintfi_filtered (int spaces, GDB_FILE *stream, const char *format, ...)
2304 fprintfi_filtered (va_alist)
2309 #ifdef ANSI_PROTOTYPES
2310 va_start (args, format);
2317 spaces = va_arg (args, int);
2318 stream = va_arg (args, GDB_FILE *);
2319 format = va_arg (args, char *);
2321 print_spaces_filtered (spaces, stream);
2323 vfprintf_filtered (stream, format, args);
2330 #ifdef ANSI_PROTOTYPES
2331 printf_filtered (const char *format, ...)
2333 printf_filtered (va_alist)
2338 #ifdef ANSI_PROTOTYPES
2339 va_start (args, format);
2344 format = va_arg (args, char *);
2346 vfprintf_filtered (gdb_stdout, format, args);
2353 #ifdef ANSI_PROTOTYPES
2354 printf_unfiltered (const char *format, ...)
2356 printf_unfiltered (va_alist)
2361 #ifdef ANSI_PROTOTYPES
2362 va_start (args, format);
2367 format = va_arg (args, char *);
2369 vfprintf_unfiltered (gdb_stdout, format, args);
2373 /* Like printf_filtered, but prints it's result indented.
2374 Called as printfi_filtered (spaces, format, ...); */
2378 #ifdef ANSI_PROTOTYPES
2379 printfi_filtered (int spaces, const char *format, ...)
2381 printfi_filtered (va_alist)
2386 #ifdef ANSI_PROTOTYPES
2387 va_start (args, format);
2393 spaces = va_arg (args, int);
2394 format = va_arg (args, char *);
2396 print_spaces_filtered (spaces, gdb_stdout);
2397 vfprintf_filtered (gdb_stdout, format, args);
2401 /* Easy -- but watch out!
2403 This routine is *not* a replacement for puts()! puts() appends a newline.
2404 This one doesn't, and had better not! */
2407 puts_filtered (string)
2410 fputs_filtered (string, gdb_stdout);
2414 puts_unfiltered (string)
2417 fputs_unfiltered (string, gdb_stdout);
2420 /* Return a pointer to N spaces and a null. The pointer is good
2421 until the next call to here. */
2427 static char *spaces = 0;
2428 static int max_spaces = -1;
2434 spaces = (char *) xmalloc (n+1);
2435 for (t = spaces+n; t != spaces;)
2441 return spaces + max_spaces - n;
2444 /* Print N spaces. */
2446 print_spaces_filtered (n, stream)
2450 fputs_filtered (n_spaces (n), stream);
2453 /* C++ demangler stuff. */
2455 /* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language
2456 LANG, using demangling args ARG_MODE, and print it filtered to STREAM.
2457 If the name is not mangled, or the language for the name is unknown, or
2458 demangling is off, the name is printed in its "raw" form. */
2461 fprintf_symbol_filtered (stream, name, lang, arg_mode)
2471 /* If user wants to see raw output, no problem. */
2474 fputs_filtered (name, stream);
2480 case language_cplus:
2481 demangled = cplus_demangle (name, arg_mode);
2484 demangled = cplus_demangle (name, arg_mode | DMGL_JAVA);
2486 case language_chill:
2487 demangled = chill_demangle (name);
2493 fputs_filtered (demangled ? demangled : name, stream);
2494 if (demangled != NULL)
2502 /* Do a strcmp() type operation on STRING1 and STRING2, ignoring any
2503 differences in whitespace. Returns 0 if they match, non-zero if they
2504 don't (slightly different than strcmp()'s range of return values).
2506 As an extra hack, string1=="FOO(ARGS)" matches string2=="FOO".
2507 This "feature" is useful when searching for matching C++ function names
2508 (such as if the user types 'break FOO', where FOO is a mangled C++
2512 strcmp_iw (string1, string2)
2513 const char *string1;
2514 const char *string2;
2516 while ((*string1 != '\0') && (*string2 != '\0'))
2518 while (isspace (*string1))
2522 while (isspace (*string2))
2526 if (*string1 != *string2)
2530 if (*string1 != '\0')
2536 return (*string1 != '\0' && *string1 != '(') || (*string2 != '\0');
2542 ** Answer whether string_to_compare is a full or partial match to
2543 ** template_string. The partial match must be in sequence starting
2547 subset_compare (string_to_compare, template_string)
2548 char *string_to_compare;
2549 char *template_string;
2552 if (template_string != (char *)NULL && string_to_compare != (char *)NULL &&
2553 strlen(string_to_compare) <= strlen(template_string))
2554 match = (strncmp(template_string,
2556 strlen(string_to_compare)) == 0);
2563 static void pagination_on_command PARAMS ((char *arg, int from_tty));
2565 pagination_on_command (arg, from_tty)
2569 pagination_enabled = 1;
2572 static void pagination_on_command PARAMS ((char *arg, int from_tty));
2574 pagination_off_command (arg, from_tty)
2578 pagination_enabled = 0;
2585 struct cmd_list_element *c;
2587 c = add_set_cmd ("width", class_support, var_uinteger,
2588 (char *)&chars_per_line,
2589 "Set number of characters gdb thinks are in a line.",
2591 add_show_from_set (c, &showlist);
2592 c->function.sfunc = set_width_command;
2595 (add_set_cmd ("height", class_support,
2596 var_uinteger, (char *)&lines_per_page,
2597 "Set number of lines gdb thinks are in a page.", &setlist),
2602 /* If the output is not a terminal, don't paginate it. */
2603 if (!GDB_FILE_ISATTY (gdb_stdout))
2604 lines_per_page = UINT_MAX;
2606 set_width_command ((char *)NULL, 0, c);
2609 (add_set_cmd ("demangle", class_support, var_boolean,
2611 "Set demangling of encoded C++ names when displaying symbols.",
2616 (add_set_cmd ("pagination", class_support,
2617 var_boolean, (char *)&pagination_enabled,
2618 "Set state of pagination.", &setlist),
2622 add_com("am", class_support, pagination_on_command,
2623 "Enable pagination");
2624 add_com("sm", class_support, pagination_off_command,
2625 "Disable pagination");
2629 (add_set_cmd ("sevenbit-strings", class_support, var_boolean,
2630 (char *)&sevenbit_strings,
2631 "Set printing of 8-bit characters in strings as \\nnn.",
2636 (add_set_cmd ("asm-demangle", class_support, var_boolean,
2637 (char *)&asm_demangle,
2638 "Set demangling of C++ names in disassembly listings.",
2643 /* Machine specific function to handle SIGWINCH signal. */
2645 #ifdef SIGWINCH_HANDLER_BODY
2646 SIGWINCH_HANDLER_BODY
2649 /* Support for converting target fp numbers into host DOUBLEST format. */
2651 /* XXX - This code should really be in libiberty/floatformat.c, however
2652 configuration issues with libiberty made this very difficult to do in the
2655 #include "floatformat.h"
2656 #include <math.h> /* ldexp */
2658 /* The odds that CHAR_BIT will be anything but 8 are low enough that I'm not
2659 going to bother with trying to muck around with whether it is defined in
2660 a system header, what we do if not, etc. */
2661 #define FLOATFORMAT_CHAR_BIT 8
2663 static unsigned long get_field PARAMS ((unsigned char *,
2664 enum floatformat_byteorders,
2669 /* Extract a field which starts at START and is LEN bytes long. DATA and
2670 TOTAL_LEN are the thing we are extracting it from, in byteorder ORDER. */
2671 static unsigned long
2672 get_field (data, order, total_len, start, len)
2673 unsigned char *data;
2674 enum floatformat_byteorders order;
2675 unsigned int total_len;
2679 unsigned long result;
2680 unsigned int cur_byte;
2683 /* Start at the least significant part of the field. */
2684 cur_byte = (start + len) / FLOATFORMAT_CHAR_BIT;
2685 if (order == floatformat_little || order == floatformat_littlebyte_bigword)
2686 cur_byte = (total_len / FLOATFORMAT_CHAR_BIT) - cur_byte - 1;
2688 ((start + len) % FLOATFORMAT_CHAR_BIT) - FLOATFORMAT_CHAR_BIT;
2689 result = *(data + cur_byte) >> (-cur_bitshift);
2690 cur_bitshift += FLOATFORMAT_CHAR_BIT;
2691 if (order == floatformat_little || order == floatformat_littlebyte_bigword)
2696 /* Move towards the most significant part of the field. */
2697 while (cur_bitshift < len)
2699 if (len - cur_bitshift < FLOATFORMAT_CHAR_BIT)
2700 /* This is the last byte; zero out the bits which are not part of
2703 (*(data + cur_byte) & ((1 << (len - cur_bitshift)) - 1))
2706 result |= *(data + cur_byte) << cur_bitshift;
2707 cur_bitshift += FLOATFORMAT_CHAR_BIT;
2708 if (order == floatformat_little || order == floatformat_littlebyte_bigword)
2716 /* Convert from FMT to a DOUBLEST.
2717 FROM is the address of the extended float.
2718 Store the DOUBLEST in *TO. */
2721 floatformat_to_doublest (fmt, from, to)
2722 const struct floatformat *fmt;
2726 unsigned char *ufrom = (unsigned char *)from;
2730 unsigned int mant_bits, mant_off;
2732 int special_exponent; /* It's a NaN, denorm or zero */
2734 /* If the mantissa bits are not contiguous from one end of the
2735 mantissa to the other, we need to make a private copy of the
2736 source bytes that is in the right order since the unpacking
2737 algorithm assumes that the bits are contiguous.
2739 Swap the bytes individually rather than accessing them through
2740 "long *" since we have no guarantee that they start on a long
2741 alignment, and also sizeof(long) for the host could be different
2742 than sizeof(long) for the target. FIXME: Assumes sizeof(long)
2743 for the target is 4. */
2745 if (fmt -> byteorder == floatformat_littlebyte_bigword)
2747 static unsigned char *newfrom;
2748 unsigned char *swapin, *swapout;
2751 longswaps = fmt -> totalsize / FLOATFORMAT_CHAR_BIT;
2754 if (newfrom == NULL)
2756 newfrom = (unsigned char *) xmalloc (fmt -> totalsize);
2761 while (longswaps-- > 0)
2763 /* This is ugly, but efficient */
2764 *swapout++ = swapin[4];
2765 *swapout++ = swapin[5];
2766 *swapout++ = swapin[6];
2767 *swapout++ = swapin[7];
2768 *swapout++ = swapin[0];
2769 *swapout++ = swapin[1];
2770 *swapout++ = swapin[2];
2771 *swapout++ = swapin[3];
2776 exponent = get_field (ufrom, fmt->byteorder, fmt->totalsize,
2777 fmt->exp_start, fmt->exp_len);
2778 /* Note that if exponent indicates a NaN, we can't really do anything useful
2779 (not knowing if the host has NaN's, or how to build one). So it will
2780 end up as an infinity or something close; that is OK. */
2782 mant_bits_left = fmt->man_len;
2783 mant_off = fmt->man_start;
2786 special_exponent = exponent == 0 || exponent == fmt->exp_nan;
2788 /* Don't bias zero's, denorms or NaNs. */
2789 if (!special_exponent)
2790 exponent -= fmt->exp_bias;
2792 /* Build the result algebraically. Might go infinite, underflow, etc;
2795 /* If this format uses a hidden bit, explicitly add it in now. Otherwise,
2796 increment the exponent by one to account for the integer bit. */
2798 if (!special_exponent)
2800 if (fmt->intbit == floatformat_intbit_no)
2801 dto = ldexp (1.0, exponent);
2806 while (mant_bits_left > 0)
2808 mant_bits = min (mant_bits_left, 32);
2810 mant = get_field (ufrom, fmt->byteorder, fmt->totalsize,
2811 mant_off, mant_bits);
2813 dto += ldexp ((double)mant, exponent - mant_bits);
2814 exponent -= mant_bits;
2815 mant_off += mant_bits;
2816 mant_bits_left -= mant_bits;
2819 /* Negate it if negative. */
2820 if (get_field (ufrom, fmt->byteorder, fmt->totalsize, fmt->sign_start, 1))
2825 static void put_field PARAMS ((unsigned char *, enum floatformat_byteorders,
2831 /* Set a field which starts at START and is LEN bytes long. DATA and
2832 TOTAL_LEN are the thing we are extracting it from, in byteorder ORDER. */
2834 put_field (data, order, total_len, start, len, stuff_to_put)
2835 unsigned char *data;
2836 enum floatformat_byteorders order;
2837 unsigned int total_len;
2840 unsigned long stuff_to_put;
2842 unsigned int cur_byte;
2845 /* Start at the least significant part of the field. */
2846 cur_byte = (start + len) / FLOATFORMAT_CHAR_BIT;
2847 if (order == floatformat_little || order == floatformat_littlebyte_bigword)
2848 cur_byte = (total_len / FLOATFORMAT_CHAR_BIT) - cur_byte - 1;
2850 ((start + len) % FLOATFORMAT_CHAR_BIT) - FLOATFORMAT_CHAR_BIT;
2851 *(data + cur_byte) &=
2852 ~(((1 << ((start + len) % FLOATFORMAT_CHAR_BIT)) - 1) << (-cur_bitshift));
2853 *(data + cur_byte) |=
2854 (stuff_to_put & ((1 << FLOATFORMAT_CHAR_BIT) - 1)) << (-cur_bitshift);
2855 cur_bitshift += FLOATFORMAT_CHAR_BIT;
2856 if (order == floatformat_little || order == floatformat_littlebyte_bigword)
2861 /* Move towards the most significant part of the field. */
2862 while (cur_bitshift < len)
2864 if (len - cur_bitshift < FLOATFORMAT_CHAR_BIT)
2866 /* This is the last byte. */
2867 *(data + cur_byte) &=
2868 ~((1 << (len - cur_bitshift)) - 1);
2869 *(data + cur_byte) |= (stuff_to_put >> cur_bitshift);
2872 *(data + cur_byte) = ((stuff_to_put >> cur_bitshift)
2873 & ((1 << FLOATFORMAT_CHAR_BIT) - 1));
2874 cur_bitshift += FLOATFORMAT_CHAR_BIT;
2875 if (order == floatformat_little || order == floatformat_littlebyte_bigword)
2882 #ifdef HAVE_LONG_DOUBLE
2883 /* Return the fractional part of VALUE, and put the exponent of VALUE in *EPTR.
2884 The range of the returned value is >= 0.5 and < 1.0. This is equivalent to
2885 frexp, but operates on the long double data type. */
2887 static long double ldfrexp PARAMS ((long double value, int *eptr));
2890 ldfrexp (value, eptr)
2897 /* Unfortunately, there are no portable functions for extracting the exponent
2898 of a long double, so we have to do it iteratively by multiplying or dividing
2899 by two until the fraction is between 0.5 and 1.0. */
2907 if (value >= tmp) /* Value >= 1.0 */
2908 while (value >= tmp)
2913 else if (value != 0.0l) /* Value < 1.0 and > 0.0 */
2927 #endif /* HAVE_LONG_DOUBLE */
2930 /* The converse: convert the DOUBLEST *FROM to an extended float
2931 and store where TO points. Neither FROM nor TO have any alignment
2935 floatformat_from_doublest (fmt, from, to)
2936 CONST struct floatformat *fmt;
2943 unsigned int mant_bits, mant_off;
2945 unsigned char *uto = (unsigned char *)to;
2947 memcpy (&dfrom, from, sizeof (dfrom));
2948 memset (uto, 0, fmt->totalsize / FLOATFORMAT_CHAR_BIT);
2950 return; /* Result is zero */
2951 if (dfrom != dfrom) /* Result is NaN */
2954 put_field (uto, fmt->byteorder, fmt->totalsize, fmt->exp_start,
2955 fmt->exp_len, fmt->exp_nan);
2956 /* Be sure it's not infinity, but NaN value is irrel */
2957 put_field (uto, fmt->byteorder, fmt->totalsize, fmt->man_start,
2962 /* If negative, set the sign bit. */
2965 put_field (uto, fmt->byteorder, fmt->totalsize, fmt->sign_start, 1, 1);
2969 if (dfrom + dfrom == dfrom && dfrom != 0.0) /* Result is Infinity */
2971 /* Infinity exponent is same as NaN's. */
2972 put_field (uto, fmt->byteorder, fmt->totalsize, fmt->exp_start,
2973 fmt->exp_len, fmt->exp_nan);
2974 /* Infinity mantissa is all zeroes. */
2975 put_field (uto, fmt->byteorder, fmt->totalsize, fmt->man_start,
2980 #ifdef HAVE_LONG_DOUBLE
2981 mant = ldfrexp (dfrom, &exponent);
2983 mant = frexp (dfrom, &exponent);
2986 put_field (uto, fmt->byteorder, fmt->totalsize, fmt->exp_start, fmt->exp_len,
2987 exponent + fmt->exp_bias - 1);
2989 mant_bits_left = fmt->man_len;
2990 mant_off = fmt->man_start;
2991 while (mant_bits_left > 0)
2993 unsigned long mant_long;
2994 mant_bits = mant_bits_left < 32 ? mant_bits_left : 32;
2996 mant *= 4294967296.0;
2997 mant_long = (unsigned long)mant;
3000 /* If the integer bit is implicit, then we need to discard it.
3001 If we are discarding a zero, we should be (but are not) creating
3002 a denormalized number which means adjusting the exponent
3004 if (mant_bits_left == fmt->man_len
3005 && fmt->intbit == floatformat_intbit_no)
3013 /* The bits we want are in the most significant MANT_BITS bits of
3014 mant_long. Move them to the least significant. */
3015 mant_long >>= 32 - mant_bits;
3018 put_field (uto, fmt->byteorder, fmt->totalsize,
3019 mant_off, mant_bits, mant_long);
3020 mant_off += mant_bits;
3021 mant_bits_left -= mant_bits;
3023 if (fmt -> byteorder == floatformat_littlebyte_bigword)
3026 unsigned char *swaplow = uto;
3027 unsigned char *swaphigh = uto + 4;
3030 for (count = 0; count < 4; count++)
3033 *swaplow++ = *swaphigh;
3039 /* temporary storage using circular buffer */
3045 static char buf[NUMCELLS][CELLSIZE];
3047 if (++cell>=NUMCELLS) cell=0;
3051 /* print routines to handle variable size regs, etc.
3053 FIXME: Note that t_addr is a bfd_vma, which is currently either an
3054 unsigned long or unsigned long long, determined at configure time.
3055 If t_addr is an unsigned long long and sizeof (unsigned long long)
3056 is greater than sizeof (unsigned long), then I believe this code will
3057 probably lose, at least for little endian machines. I believe that
3058 it would also be better to eliminate the switch on the absolute size
3059 of t_addr and replace it with a sequence of if statements that compare
3060 sizeof t_addr with sizeof the various types and do the right thing,
3061 which includes knowing whether or not the host supports long long.
3066 static int thirty_two = 32; /* eliminate warning from compiler on 32-bit systems */
3072 char *paddr_str=get_cell();
3073 switch (sizeof(t_addr))
3076 sprintf (paddr_str, "%08lx%08lx",
3077 (unsigned long) (addr >> thirty_two), (unsigned long) (addr & 0xffffffff));
3080 sprintf (paddr_str, "%08lx", (unsigned long) addr);
3083 sprintf (paddr_str, "%04x", (unsigned short) (addr & 0xffff));
3086 sprintf (paddr_str, "%lx", (unsigned long) addr);
3095 char *preg_str=get_cell();
3096 switch (sizeof(t_reg))
3099 sprintf (preg_str, "%08lx%08lx",
3100 (unsigned long) (reg >> thirty_two), (unsigned long) (reg & 0xffffffff));
3103 sprintf (preg_str, "%08lx", (unsigned long) reg);
3106 sprintf (preg_str, "%04x", (unsigned short) (reg & 0xffff));
3109 sprintf (preg_str, "%lx", (unsigned long) reg);
3118 char *paddr_str=get_cell();
3119 switch (sizeof(t_addr))
3123 unsigned long high = (unsigned long) (addr >> thirty_two);
3125 sprintf (paddr_str, "%lx", (unsigned long) (addr & 0xffffffff));
3127 sprintf (paddr_str, "%lx%08lx",
3128 high, (unsigned long) (addr & 0xffffffff));
3132 sprintf (paddr_str, "%lx", (unsigned long) addr);
3135 sprintf (paddr_str, "%x", (unsigned short) (addr & 0xffff));
3138 sprintf (paddr_str,"%lx", (unsigned long) addr);
3147 char *preg_str=get_cell();
3148 switch (sizeof(t_reg))
3152 unsigned long high = (unsigned long) (reg >> thirty_two);
3154 sprintf (preg_str, "%lx", (unsigned long) (reg & 0xffffffff));
3156 sprintf (preg_str, "%lx%08lx",
3157 high, (unsigned long) (reg & 0xffffffff));
3161 sprintf (preg_str, "%lx", (unsigned long) reg);
3164 sprintf (preg_str, "%x", (unsigned short) (reg & 0xffff));
3167 sprintf (preg_str, "%lx", (unsigned long) reg);
3172 /* Helper functions for INNER_THAN */
3174 core_addr_lessthan (lhs, rhs)
3182 core_addr_greaterthan (lhs, rhs)