1 /* General utility routines for GDB, the GNU debugger.
2 Copyright 1986, 1989, 1990-1992, 1995, 1996, 1998, 2000
3 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
24 #include "gdb_string.h"
25 #include "event-top.h"
38 /* SunOS's curses.h has a '#define reg register' in it. Thank you Sun. */
49 #include "expression.h"
53 #include <readline/readline.h>
56 #define XMALLOC(TYPE) ((TYPE*) xmalloc (sizeof (TYPE)))
58 /* readline defines this. */
61 void (*error_begin_hook) PARAMS ((void));
63 /* Holds the last error message issued by gdb */
65 static struct ui_file *gdb_lasterr;
67 /* Prototypes for local functions */
69 static void vfprintf_maybe_filtered (struct ui_file *, const char *,
72 static void fputs_maybe_filtered (const char *, struct ui_file *, int);
74 #if defined (USE_MMALLOC) && !defined (NO_MMCHECK)
75 static void malloc_botch PARAMS ((void));
79 prompt_for_continue PARAMS ((void));
82 set_width_command PARAMS ((char *, int, struct cmd_list_element *));
85 set_width PARAMS ((void));
87 /* Chain of cleanup actions established with make_cleanup,
88 to be executed if an error happens. */
90 static struct cleanup *cleanup_chain; /* cleaned up after a failed command */
91 static struct cleanup *final_cleanup_chain; /* cleaned up when gdb exits */
92 static struct cleanup *run_cleanup_chain; /* cleaned up on each 'run' */
93 static struct cleanup *exec_cleanup_chain; /* cleaned up on each execution command */
94 /* cleaned up on each error from within an execution command */
95 static struct cleanup *exec_error_cleanup_chain;
97 /* Pointer to what is left to do for an execution command after the
98 target stops. Used only in asynchronous mode, by targets that
99 support async execution. The finish and until commands use it. So
100 does the target extended-remote command. */
101 struct continuation *cmd_continuation;
102 struct continuation *intermediate_continuation;
104 /* Nonzero if we have job control. */
108 /* Nonzero means a quit has been requested. */
112 /* Nonzero means quit immediately if Control-C is typed now, rather
113 than waiting until QUIT is executed. Be careful in setting this;
114 code which executes with immediate_quit set has to be very careful
115 about being able to deal with being interrupted at any time. It is
116 almost always better to use QUIT; the only exception I can think of
117 is being able to quit out of a system call (using EINTR loses if
118 the SIGINT happens between the previous QUIT and the system call).
119 To immediately quit in the case in which a SIGINT happens between
120 the previous QUIT and setting immediate_quit (desirable anytime we
121 expect to block), call QUIT after setting immediate_quit. */
125 /* Nonzero means that encoded C++ names should be printed out in their
126 C++ form rather than raw. */
130 /* Nonzero means that encoded C++ names should be printed out in their
131 C++ form even in assembler language displays. If this is set, but
132 DEMANGLE is zero, names are printed raw, i.e. DEMANGLE controls. */
134 int asm_demangle = 0;
136 /* Nonzero means that strings with character values >0x7F should be printed
137 as octal escapes. Zero means just print the value (e.g. it's an
138 international character, and the terminal or window can cope.) */
140 int sevenbit_strings = 0;
142 /* String to be printed before error messages, if any. */
144 char *error_pre_print;
146 /* String to be printed before quit messages, if any. */
148 char *quit_pre_print;
150 /* String to be printed before warning messages, if any. */
152 char *warning_pre_print = "\nwarning: ";
154 int pagination_enabled = 1;
157 /* Add a new cleanup to the cleanup_chain,
158 and return the previous chain pointer
159 to be passed later to do_cleanups or discard_cleanups.
160 Args are FUNCTION to clean up with, and ARG to pass to it. */
163 make_cleanup (make_cleanup_ftype *function, void *arg)
165 return make_my_cleanup (&cleanup_chain, function, arg);
169 make_final_cleanup (make_cleanup_ftype *function, void *arg)
171 return make_my_cleanup (&final_cleanup_chain, function, arg);
175 make_run_cleanup (make_cleanup_ftype *function, void *arg)
177 return make_my_cleanup (&run_cleanup_chain, function, arg);
181 make_exec_cleanup (make_cleanup_ftype *function, void *arg)
183 return make_my_cleanup (&exec_cleanup_chain, function, arg);
187 make_exec_error_cleanup (make_cleanup_ftype *function, void *arg)
189 return make_my_cleanup (&exec_error_cleanup_chain, function, arg);
196 freeargv ((char **) arg);
200 make_cleanup_freeargv (arg)
203 return make_my_cleanup (&cleanup_chain, do_freeargv, arg);
207 do_bfd_close_cleanup (void *arg)
213 make_cleanup_bfd_close (bfd *abfd)
215 return make_cleanup (do_bfd_close_cleanup, abfd);
219 do_ui_file_delete (void *arg)
221 ui_file_delete (arg);
225 make_cleanup_ui_file_delete (struct ui_file *arg)
227 return make_my_cleanup (&cleanup_chain, do_ui_file_delete, arg);
231 make_my_cleanup (struct cleanup **pmy_chain, make_cleanup_ftype *function,
234 register struct cleanup *new
235 = (struct cleanup *) xmalloc (sizeof (struct cleanup));
236 register struct cleanup *old_chain = *pmy_chain;
238 new->next = *pmy_chain;
239 new->function = function;
246 /* Discard cleanups and do the actions they describe
247 until we get back to the point OLD_CHAIN in the cleanup_chain. */
250 do_cleanups (old_chain)
251 register struct cleanup *old_chain;
253 do_my_cleanups (&cleanup_chain, old_chain);
257 do_final_cleanups (old_chain)
258 register struct cleanup *old_chain;
260 do_my_cleanups (&final_cleanup_chain, old_chain);
264 do_run_cleanups (old_chain)
265 register struct cleanup *old_chain;
267 do_my_cleanups (&run_cleanup_chain, old_chain);
271 do_exec_cleanups (old_chain)
272 register struct cleanup *old_chain;
274 do_my_cleanups (&exec_cleanup_chain, old_chain);
278 do_exec_error_cleanups (old_chain)
279 register struct cleanup *old_chain;
281 do_my_cleanups (&exec_error_cleanup_chain, old_chain);
285 do_my_cleanups (pmy_chain, old_chain)
286 register struct cleanup **pmy_chain;
287 register struct cleanup *old_chain;
289 register struct cleanup *ptr;
290 while ((ptr = *pmy_chain) != old_chain)
292 *pmy_chain = ptr->next; /* Do this first incase recursion */
293 (*ptr->function) (ptr->arg);
298 /* Discard cleanups, not doing the actions they describe,
299 until we get back to the point OLD_CHAIN in the cleanup_chain. */
302 discard_cleanups (old_chain)
303 register struct cleanup *old_chain;
305 discard_my_cleanups (&cleanup_chain, old_chain);
309 discard_final_cleanups (old_chain)
310 register struct cleanup *old_chain;
312 discard_my_cleanups (&final_cleanup_chain, old_chain);
316 discard_exec_error_cleanups (old_chain)
317 register struct cleanup *old_chain;
319 discard_my_cleanups (&exec_error_cleanup_chain, old_chain);
323 discard_my_cleanups (pmy_chain, old_chain)
324 register struct cleanup **pmy_chain;
325 register struct cleanup *old_chain;
327 register struct cleanup *ptr;
328 while ((ptr = *pmy_chain) != old_chain)
330 *pmy_chain = ptr->next;
335 /* Set the cleanup_chain to 0, and return the old cleanup chain. */
339 return save_my_cleanups (&cleanup_chain);
343 save_final_cleanups ()
345 return save_my_cleanups (&final_cleanup_chain);
349 save_my_cleanups (pmy_chain)
350 struct cleanup **pmy_chain;
352 struct cleanup *old_chain = *pmy_chain;
358 /* Restore the cleanup chain from a previously saved chain. */
360 restore_cleanups (chain)
361 struct cleanup *chain;
363 restore_my_cleanups (&cleanup_chain, chain);
367 restore_final_cleanups (chain)
368 struct cleanup *chain;
370 restore_my_cleanups (&final_cleanup_chain, chain);
374 restore_my_cleanups (pmy_chain, chain)
375 struct cleanup **pmy_chain;
376 struct cleanup *chain;
381 /* This function is useful for cleanups.
385 old_chain = make_cleanup (free_current_contents, &foo);
387 to arrange to free the object thus allocated. */
390 free_current_contents (void *ptr)
392 void **location = ptr;
393 if (location == NULL)
394 internal_error ("free_current_contents: NULL pointer");
395 if (*location != NULL)
402 /* Provide a known function that does nothing, to use as a base for
403 for a possibly long chain of cleanups. This is useful where we
404 use the cleanup chain for handling normal cleanups as well as dealing
405 with cleanups that need to be done as a result of a call to error().
406 In such cases, we may not be certain where the first cleanup is, unless
407 we have a do-nothing one to always use as the base. */
411 null_cleanup (void *arg)
415 /* Add a continuation to the continuation list, the gloabl list
416 cmd_continuation. The new continuation will be added at the front.*/
418 add_continuation (continuation_hook, arg_list)
419 void (*continuation_hook) PARAMS ((struct continuation_arg *));
420 struct continuation_arg *arg_list;
422 struct continuation *continuation_ptr;
424 continuation_ptr = (struct continuation *) xmalloc (sizeof (struct continuation));
425 continuation_ptr->continuation_hook = continuation_hook;
426 continuation_ptr->arg_list = arg_list;
427 continuation_ptr->next = cmd_continuation;
428 cmd_continuation = continuation_ptr;
431 /* Walk down the cmd_continuation list, and execute all the
432 continuations. There is a problem though. In some cases new
433 continuations may be added while we are in the middle of this
434 loop. If this happens they will be added in the front, and done
435 before we have a chance of exhausting those that were already
436 there. We need to then save the beginning of the list in a pointer
437 and do the continuations from there on, instead of using the
438 global beginning of list as our iteration pointer.*/
440 do_all_continuations ()
442 struct continuation *continuation_ptr;
443 struct continuation *saved_continuation;
445 /* Copy the list header into another pointer, and set the global
446 list header to null, so that the global list can change as a side
447 effect of invoking the continuations and the processing of
448 the preexisting continuations will not be affected. */
449 continuation_ptr = cmd_continuation;
450 cmd_continuation = NULL;
452 /* Work now on the list we have set aside. */
453 while (continuation_ptr)
455 (continuation_ptr->continuation_hook) (continuation_ptr->arg_list);
456 saved_continuation = continuation_ptr;
457 continuation_ptr = continuation_ptr->next;
458 free (saved_continuation);
462 /* Walk down the cmd_continuation list, and get rid of all the
465 discard_all_continuations ()
467 struct continuation *continuation_ptr;
469 while (cmd_continuation)
471 continuation_ptr = cmd_continuation;
472 cmd_continuation = continuation_ptr->next;
473 free (continuation_ptr);
477 /* Add a continuation to the continuation list, the global list
478 intermediate_continuation. The new continuation will be added at the front.*/
480 add_intermediate_continuation (continuation_hook, arg_list)
481 void (*continuation_hook) PARAMS ((struct continuation_arg *));
482 struct continuation_arg *arg_list;
484 struct continuation *continuation_ptr;
486 continuation_ptr = (struct continuation *) xmalloc (sizeof (struct continuation));
487 continuation_ptr->continuation_hook = continuation_hook;
488 continuation_ptr->arg_list = arg_list;
489 continuation_ptr->next = intermediate_continuation;
490 intermediate_continuation = continuation_ptr;
493 /* Walk down the cmd_continuation list, and execute all the
494 continuations. There is a problem though. In some cases new
495 continuations may be added while we are in the middle of this
496 loop. If this happens they will be added in the front, and done
497 before we have a chance of exhausting those that were already
498 there. We need to then save the beginning of the list in a pointer
499 and do the continuations from there on, instead of using the
500 global beginning of list as our iteration pointer.*/
502 do_all_intermediate_continuations ()
504 struct continuation *continuation_ptr;
505 struct continuation *saved_continuation;
507 /* Copy the list header into another pointer, and set the global
508 list header to null, so that the global list can change as a side
509 effect of invoking the continuations and the processing of
510 the preexisting continuations will not be affected. */
511 continuation_ptr = intermediate_continuation;
512 intermediate_continuation = NULL;
514 /* Work now on the list we have set aside. */
515 while (continuation_ptr)
517 (continuation_ptr->continuation_hook) (continuation_ptr->arg_list);
518 saved_continuation = continuation_ptr;
519 continuation_ptr = continuation_ptr->next;
520 free (saved_continuation);
524 /* Walk down the cmd_continuation list, and get rid of all the
527 discard_all_intermediate_continuations ()
529 struct continuation *continuation_ptr;
531 while (intermediate_continuation)
533 continuation_ptr = intermediate_continuation;
534 intermediate_continuation = continuation_ptr->next;
535 free (continuation_ptr);
541 /* Print a warning message. Way to use this is to call warning_begin,
542 output the warning message (use unfiltered output to gdb_stderr),
543 ending in a newline. There is not currently a warning_end that you
544 call afterwards, but such a thing might be added if it is useful
545 for a GUI to separate warning messages from other output.
547 FIXME: Why do warnings use unfiltered output and errors filtered?
548 Is this anything other than a historical accident? */
553 target_terminal_ours ();
554 wrap_here (""); /* Force out any buffered output */
555 gdb_flush (gdb_stdout);
556 if (warning_pre_print)
557 fprintf_unfiltered (gdb_stderr, warning_pre_print);
560 /* Print a warning message.
561 The first argument STRING is the warning message, used as a fprintf string,
562 and the remaining args are passed as arguments to it.
563 The primary difference between warnings and errors is that a warning
564 does not force the return to command level. */
567 warning (const char *string,...)
570 va_start (args, string);
572 (*warning_hook) (string, args);
576 vfprintf_unfiltered (gdb_stderr, string, args);
577 fprintf_unfiltered (gdb_stderr, "\n");
582 /* Start the printing of an error message. Way to use this is to call
583 this, output the error message (use filtered output to gdb_stderr
584 (FIXME: Some callers, like memory_error, use gdb_stdout)), ending
585 in a newline, and then call return_to_top_level (RETURN_ERROR).
586 error() provides a convenient way to do this for the special case
587 that the error message can be formatted with a single printf call,
588 but this is more general. */
592 if (error_begin_hook)
595 target_terminal_ours ();
596 wrap_here (""); /* Force out any buffered output */
597 gdb_flush (gdb_stdout);
599 annotate_error_begin ();
602 fprintf_filtered (gdb_stderr, error_pre_print);
605 /* Print an error message and return to command level.
606 The first argument STRING is the error message, used as a fprintf string,
607 and the remaining args are passed as arguments to it. */
610 verror (const char *string, va_list args)
613 struct cleanup *err_string_cleanup;
614 /* FIXME: cagney/1999-11-10: All error calls should come here.
615 Unfortunatly some code uses the sequence: error_begin(); print
616 error message; return_to_top_level. That code should be
619 /* NOTE: It's tempting to just do the following...
620 vfprintf_filtered (gdb_stderr, string, args);
621 and then follow with a similar looking statement to cause the message
622 to also go to gdb_lasterr. But if we do this, we'll be traversing the
623 va_list twice which works on some platforms and fails miserably on
625 /* Save it as the last error */
626 ui_file_rewind (gdb_lasterr);
627 vfprintf_filtered (gdb_lasterr, string, args);
628 /* Retrieve the last error and print it to gdb_stderr */
629 err_string = error_last_message ();
630 err_string_cleanup = make_cleanup (free, err_string);
631 fputs_filtered (err_string, gdb_stderr);
632 fprintf_filtered (gdb_stderr, "\n");
633 do_cleanups (err_string_cleanup);
634 return_to_top_level (RETURN_ERROR);
638 error (const char *string,...)
641 va_start (args, string);
642 verror (string, args);
647 error_stream (struct ui_file *stream)
650 char *msg = ui_file_xstrdup (stream, &size);
651 make_cleanup (free, msg);
655 /* Get the last error message issued by gdb */
658 error_last_message (void)
661 return ui_file_xstrdup (gdb_lasterr, &len);
664 /* This is to be called by main() at the very beginning */
669 gdb_lasterr = mem_fileopen ();
672 /* Print a message reporting an internal error. Ask the user if they
673 want to continue, dump core, or just exit. */
676 internal_verror (const char *fmt, va_list ap)
678 static char msg[] = "Internal GDB error: recursive internal error.\n";
679 static int dejavu = 0;
683 /* don't allow infinite error recursion. */
691 fputs_unfiltered (msg, gdb_stderr);
695 write (STDERR_FILENO, msg, sizeof (msg));
699 /* Try to get the message out */
700 target_terminal_ours ();
701 fputs_unfiltered ("gdb-internal-error: ", gdb_stderr);
702 vfprintf_unfiltered (gdb_stderr, fmt, ap);
703 fputs_unfiltered ("\n", gdb_stderr);
705 /* Default (no case) is to quit GDB. When in batch mode this
706 lessens the likelhood of GDB going into an infinate loop. */
707 continue_p = query ("\
708 An internal GDB error was detected. This may make make further\n\
709 debugging unreliable. Continue this debugging session? ");
711 /* Default (no case) is to not dump core. Lessen the chance of GDB
712 leaving random core files around. */
713 dump_core_p = query ("\
714 Create a core file containing the current state of GDB? ");
733 return_to_top_level (RETURN_ERROR);
737 internal_error (char *string, ...)
740 va_start (ap, string);
742 internal_verror (string, ap);
746 /* The strerror() function can return NULL for errno values that are
747 out of range. Provide a "safe" version that always returns a
751 safe_strerror (errnum)
757 if ((msg = strerror (errnum)) == NULL)
759 sprintf (buf, "(undocumented errno %d)", errnum);
765 /* The strsignal() function can return NULL for signal values that are
766 out of range. Provide a "safe" version that always returns a
770 safe_strsignal (signo)
776 if ((msg = strsignal (signo)) == NULL)
778 sprintf (buf, "(undocumented signal %d)", signo);
785 /* Print the system error message for errno, and also mention STRING
786 as the file name for which the error was encountered.
787 Then return to command level. */
790 perror_with_name (string)
796 err = safe_strerror (errno);
797 combined = (char *) alloca (strlen (err) + strlen (string) + 3);
798 strcpy (combined, string);
799 strcat (combined, ": ");
800 strcat (combined, err);
802 /* I understand setting these is a matter of taste. Still, some people
803 may clear errno but not know about bfd_error. Doing this here is not
805 bfd_set_error (bfd_error_no_error);
808 error ("%s.", combined);
811 /* Print the system error message for ERRCODE, and also mention STRING
812 as the file name for which the error was encountered. */
815 print_sys_errmsg (string, errcode)
822 err = safe_strerror (errcode);
823 combined = (char *) alloca (strlen (err) + strlen (string) + 3);
824 strcpy (combined, string);
825 strcat (combined, ": ");
826 strcat (combined, err);
828 /* We want anything which was printed on stdout to come out first, before
830 gdb_flush (gdb_stdout);
831 fprintf_unfiltered (gdb_stderr, "%s.\n", combined);
834 /* Control C eventually causes this to be called, at a convenient time. */
839 serial_t gdb_stdout_serial = serial_fdopen (1);
841 target_terminal_ours ();
843 /* We want all output to appear now, before we print "Quit". We
844 have 3 levels of buffering we have to flush (it's possible that
845 some of these should be changed to flush the lower-level ones
848 /* 1. The _filtered buffer. */
849 wrap_here ((char *) 0);
851 /* 2. The stdio buffer. */
852 gdb_flush (gdb_stdout);
853 gdb_flush (gdb_stderr);
855 /* 3. The system-level buffer. */
856 SERIAL_DRAIN_OUTPUT (gdb_stdout_serial);
857 SERIAL_UN_FDOPEN (gdb_stdout_serial);
859 annotate_error_begin ();
861 /* Don't use *_filtered; we don't want to prompt the user to continue. */
863 fprintf_unfiltered (gdb_stderr, quit_pre_print);
866 /* No steenking SIGINT will ever be coming our way when the
867 program is resumed. Don't lie. */
868 fprintf_unfiltered (gdb_stderr, "Quit\n");
871 /* If there is no terminal switching for this target, then we can't
872 possibly get screwed by the lack of job control. */
873 || current_target.to_terminal_ours == NULL)
874 fprintf_unfiltered (gdb_stderr, "Quit\n");
876 fprintf_unfiltered (gdb_stderr,
877 "Quit (expect signal SIGINT when the program is resumed)\n");
879 return_to_top_level (RETURN_QUIT);
883 #if defined(_MSC_VER) /* should test for wingdb instead? */
886 * Windows translates all keyboard and mouse events
887 * into a message which is appended to the message
888 * queue for the process.
894 int k = win32pollquit ();
901 #else /* !defined(_MSC_VER) */
906 /* Done by signals */
909 #endif /* !defined(_MSC_VER) */
911 /* Control C comes here */
917 /* Restore the signal handler. Harmless with BSD-style signals, needed
918 for System V-style signals. So just always do it, rather than worrying
919 about USG defines and stuff like that. */
920 signal (signo, request_quit);
930 /* Memory management stuff (malloc friends). */
932 /* Make a substitute size_t for non-ANSI compilers. */
934 #ifndef HAVE_STDDEF_H
936 #define size_t unsigned int
940 #if !defined (USE_MMALLOC)
943 mcalloc (PTR md, size_t number, size_t size)
945 return calloc (number, size);
953 return malloc (size);
957 mrealloc (md, ptr, size)
962 if (ptr == 0) /* Guard against old realloc's */
963 return malloc (size);
965 return realloc (ptr, size);
976 #endif /* USE_MMALLOC */
978 #if !defined (USE_MMALLOC) || defined (NO_MMCHECK)
981 init_malloc (void *md)
985 #else /* Have mmalloc and want corruption checking */
990 fprintf_unfiltered (gdb_stderr, "Memory corruption\n");
994 /* Attempt to install hooks in mmalloc/mrealloc/mfree for the heap specified
995 by MD, to detect memory corruption. Note that MD may be NULL to specify
996 the default heap that grows via sbrk.
998 Note that for freshly created regions, we must call mmcheckf prior to any
999 mallocs in the region. Otherwise, any region which was allocated prior to
1000 installing the checking hooks, which is later reallocated or freed, will
1001 fail the checks! The mmcheck function only allows initial hooks to be
1002 installed before the first mmalloc. However, anytime after we have called
1003 mmcheck the first time to install the checking hooks, we can call it again
1004 to update the function pointer to the memory corruption handler.
1006 Returns zero on failure, non-zero on success. */
1008 #ifndef MMCHECK_FORCE
1009 #define MMCHECK_FORCE 0
1013 init_malloc (void *md)
1015 if (!mmcheckf (md, malloc_botch, MMCHECK_FORCE))
1017 /* Don't use warning(), which relies on current_target being set
1018 to something other than dummy_target, until after
1019 initialize_all_files(). */
1022 (gdb_stderr, "warning: failed to install memory consistency checks; ");
1024 (gdb_stderr, "configuration should define NO_MMCHECK or MMCHECK_FORCE\n");
1030 #endif /* Have mmalloc and want corruption checking */
1032 /* Called when a memory allocation fails, with the number of bytes of
1033 memory requested in SIZE. */
1041 internal_error ("virtual memory exhausted: can't allocate %ld bytes.", size);
1045 internal_error ("virtual memory exhausted.");
1049 /* Like mmalloc but get error if no storage available, and protect against
1050 the caller wanting to allocate zero bytes. Whether to return NULL for
1051 a zero byte request, or translate the request into a request for one
1052 byte of zero'd storage, is a religious issue. */
1065 else if ((val = mmalloc (md, size)) == NULL)
1072 /* Like mrealloc but get error if no storage available. */
1075 xmrealloc (md, ptr, size)
1084 val = mrealloc (md, ptr, size);
1088 val = mmalloc (md, size);
1097 /* Like malloc but get error if no storage available, and protect against
1098 the caller wanting to allocate zero bytes. */
1104 return (xmmalloc ((PTR) NULL, size));
1107 /* Like calloc but get error if no storage available */
1110 xcalloc (size_t number, size_t size)
1112 void *mem = mcalloc (NULL, number, size);
1114 nomem (number * size);
1118 /* Like mrealloc but get error if no storage available. */
1121 xrealloc (ptr, size)
1125 return (xmrealloc ((PTR) NULL, ptr, size));
1129 /* My replacement for the read system call.
1130 Used like `read' but keeps going if `read' returns too soon. */
1133 myread (desc, addr, len)
1143 val = read (desc, addr, len);
1147 return orglen - len;
1154 /* Make a copy of the string at PTR with SIZE characters
1155 (and add a null character at the end in the copy).
1156 Uses malloc to get the space. Returns the address of the copy. */
1159 savestring (ptr, size)
1163 register char *p = (char *) xmalloc (size + 1);
1164 memcpy (p, ptr, size);
1170 msavestring (void *md, const char *ptr, int size)
1172 register char *p = (char *) xmmalloc (md, size + 1);
1173 memcpy (p, ptr, size);
1178 /* The "const" is so it compiles under DGUX (which prototypes strsave
1179 in <string.h>. FIXME: This should be named "xstrsave", shouldn't it?
1180 Doesn't real strsave return NULL if out of memory? */
1185 return savestring (ptr, strlen (ptr));
1189 mstrsave (void *md, const char *ptr)
1191 return (msavestring (md, ptr, strlen (ptr)));
1195 print_spaces (n, file)
1197 register struct ui_file *file;
1199 fputs_unfiltered (n_spaces (n), file);
1202 /* Print a host address. */
1205 gdb_print_host_address (void *addr, struct ui_file *stream)
1208 /* We could use the %p conversion specifier to fprintf if we had any
1209 way of knowing whether this host supports it. But the following
1210 should work on the Alpha and on 32 bit machines. */
1212 fprintf_filtered (stream, "0x%lx", (unsigned long) addr);
1215 /* Ask user a y-or-n question and return 1 iff answer is yes.
1216 Takes three args which are given to printf to print the question.
1217 The first, a control string, should end in "? ".
1218 It should not say how to answer, because we do that. */
1222 query (char *ctlstr,...)
1225 register int answer;
1229 va_start (args, ctlstr);
1233 return query_hook (ctlstr, args);
1236 /* Automatically answer "yes" if input is not from a terminal. */
1237 if (!input_from_terminal_p ())
1240 /* FIXME Automatically answer "yes" if called from MacGDB. */
1247 wrap_here (""); /* Flush any buffered output */
1248 gdb_flush (gdb_stdout);
1250 if (annotation_level > 1)
1251 printf_filtered ("\n\032\032pre-query\n");
1253 vfprintf_filtered (gdb_stdout, ctlstr, args);
1254 printf_filtered ("(y or n) ");
1256 if (annotation_level > 1)
1257 printf_filtered ("\n\032\032query\n");
1260 /* If not in MacGDB, move to a new line so the entered line doesn't
1261 have a prompt on the front of it. */
1263 fputs_unfiltered ("\n", gdb_stdout);
1267 gdb_flush (gdb_stdout);
1270 if (!tui_version || cmdWin == tuiWinWithFocus ())
1272 answer = fgetc (stdin);
1275 answer = (unsigned char) tuiBufferGetc ();
1278 clearerr (stdin); /* in case of C-d */
1279 if (answer == EOF) /* C-d */
1284 /* Eat rest of input line, to EOF or newline */
1285 if ((answer != '\n') || (tui_version && answer != '\r'))
1289 if (!tui_version || cmdWin == tuiWinWithFocus ())
1291 ans2 = fgetc (stdin);
1294 ans2 = (unsigned char) tuiBufferGetc ();
1298 while (ans2 != EOF && ans2 != '\n' && ans2 != '\r');
1299 TUIDO (((TuiOpaqueFuncPtr) tui_vStartNewLines, 1));
1313 printf_filtered ("Please answer y or n.\n");
1316 if (annotation_level > 1)
1317 printf_filtered ("\n\032\032post-query\n");
1322 /* Parse a C escape sequence. STRING_PTR points to a variable
1323 containing a pointer to the string to parse. That pointer
1324 should point to the character after the \. That pointer
1325 is updated past the characters we use. The value of the
1326 escape sequence is returned.
1328 A negative value means the sequence \ newline was seen,
1329 which is supposed to be equivalent to nothing at all.
1331 If \ is followed by a null character, we return a negative
1332 value and leave the string pointer pointing at the null character.
1334 If \ is followed by 000, we return 0 and leave the string pointer
1335 after the zeros. A value of 0 does not mean end of string. */
1338 parse_escape (string_ptr)
1341 register int c = *(*string_ptr)++;
1345 return 007; /* Bell (alert) char */
1348 case 'e': /* Escape character */
1366 c = *(*string_ptr)++;
1368 c = parse_escape (string_ptr);
1371 return (c & 0200) | (c & 037);
1382 register int i = c - '0';
1383 register int count = 0;
1386 if ((c = *(*string_ptr)++) >= '0' && c <= '7')
1404 /* Print the character C on STREAM as part of the contents of a literal
1405 string whose delimiter is QUOTER. Note that this routine should only
1406 be call for printing things which are independent of the language
1407 of the program being debugged. */
1409 static void printchar (int c, void (*do_fputs) (const char *, struct ui_file*), void (*do_fprintf) (struct ui_file*, const char *, ...), struct ui_file *stream, int quoter);
1412 printchar (c, do_fputs, do_fprintf, stream, quoter)
1414 void (*do_fputs) PARAMS ((const char *, struct ui_file*));
1415 void (*do_fprintf) PARAMS ((struct ui_file*, const char *, ...));
1416 struct ui_file *stream;
1420 c &= 0xFF; /* Avoid sign bit follies */
1422 if (c < 0x20 || /* Low control chars */
1423 (c >= 0x7F && c < 0xA0) || /* DEL, High controls */
1424 (sevenbit_strings && c >= 0x80))
1425 { /* high order bit set */
1429 do_fputs ("\\n", stream);
1432 do_fputs ("\\b", stream);
1435 do_fputs ("\\t", stream);
1438 do_fputs ("\\f", stream);
1441 do_fputs ("\\r", stream);
1444 do_fputs ("\\e", stream);
1447 do_fputs ("\\a", stream);
1450 do_fprintf (stream, "\\%.3o", (unsigned int) c);
1456 if (c == '\\' || c == quoter)
1457 do_fputs ("\\", stream);
1458 do_fprintf (stream, "%c", c);
1462 /* Print the character C on STREAM as part of the contents of a
1463 literal string whose delimiter is QUOTER. Note that these routines
1464 should only be call for printing things which are independent of
1465 the language of the program being debugged. */
1468 fputstr_filtered (str, quoter, stream)
1471 struct ui_file *stream;
1474 printchar (*str++, fputs_filtered, fprintf_filtered, stream, quoter);
1478 fputstr_unfiltered (str, quoter, stream)
1481 struct ui_file *stream;
1484 printchar (*str++, fputs_unfiltered, fprintf_unfiltered, stream, quoter);
1488 fputstrn_unfiltered (str, n, quoter, stream)
1492 struct ui_file *stream;
1495 for (i = 0; i < n; i++)
1496 printchar (str[i], fputs_unfiltered, fprintf_unfiltered, stream, quoter);
1501 /* Number of lines per page or UINT_MAX if paging is disabled. */
1502 static unsigned int lines_per_page;
1503 /* Number of chars per line or UNIT_MAX if line folding is disabled. */
1504 static unsigned int chars_per_line;
1505 /* Current count of lines printed on this page, chars on this line. */
1506 static unsigned int lines_printed, chars_printed;
1508 /* Buffer and start column of buffered text, for doing smarter word-
1509 wrapping. When someone calls wrap_here(), we start buffering output
1510 that comes through fputs_filtered(). If we see a newline, we just
1511 spit it out and forget about the wrap_here(). If we see another
1512 wrap_here(), we spit it out and remember the newer one. If we see
1513 the end of the line, we spit out a newline, the indent, and then
1514 the buffered output. */
1516 /* Malloc'd buffer with chars_per_line+2 bytes. Contains characters which
1517 are waiting to be output (they have already been counted in chars_printed).
1518 When wrap_buffer[0] is null, the buffer is empty. */
1519 static char *wrap_buffer;
1521 /* Pointer in wrap_buffer to the next character to fill. */
1522 static char *wrap_pointer;
1524 /* String to indent by if the wrap occurs. Must not be NULL if wrap_column
1526 static char *wrap_indent;
1528 /* Column number on the screen where wrap_buffer begins, or 0 if wrapping
1529 is not in effect. */
1530 static int wrap_column;
1533 /* Inialize the lines and chars per page */
1538 if (tui_version && m_winPtrNotNull (cmdWin))
1540 lines_per_page = cmdWin->generic.height;
1541 chars_per_line = cmdWin->generic.width;
1546 /* These defaults will be used if we are unable to get the correct
1547 values from termcap. */
1548 #if defined(__GO32__)
1549 lines_per_page = ScreenRows ();
1550 chars_per_line = ScreenCols ();
1552 lines_per_page = 24;
1553 chars_per_line = 80;
1555 #if !defined (MPW) && !defined (_WIN32)
1556 /* No termcap under MPW, although might be cool to do something
1557 by looking at worksheet or console window sizes. */
1558 /* Initialize the screen height and width from termcap. */
1560 char *termtype = getenv ("TERM");
1562 /* Positive means success, nonpositive means failure. */
1565 /* 2048 is large enough for all known terminals, according to the
1566 GNU termcap manual. */
1567 char term_buffer[2048];
1571 status = tgetent (term_buffer, termtype);
1575 int running_in_emacs = getenv ("EMACS") != NULL;
1577 val = tgetnum ("li");
1578 if (val >= 0 && !running_in_emacs)
1579 lines_per_page = val;
1581 /* The number of lines per page is not mentioned
1582 in the terminal description. This probably means
1583 that paging is not useful (e.g. emacs shell window),
1584 so disable paging. */
1585 lines_per_page = UINT_MAX;
1587 val = tgetnum ("co");
1589 chars_per_line = val;
1595 #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER)
1597 /* If there is a better way to determine the window size, use it. */
1598 SIGWINCH_HANDLER (SIGWINCH);
1601 /* If the output is not a terminal, don't paginate it. */
1602 if (!ui_file_isatty (gdb_stdout))
1603 lines_per_page = UINT_MAX;
1604 } /* the command_line_version */
1611 if (chars_per_line == 0)
1616 wrap_buffer = (char *) xmalloc (chars_per_line + 2);
1617 wrap_buffer[0] = '\0';
1620 wrap_buffer = (char *) xrealloc (wrap_buffer, chars_per_line + 2);
1621 wrap_pointer = wrap_buffer; /* Start it at the beginning */
1626 set_width_command (args, from_tty, c)
1629 struct cmd_list_element *c;
1634 /* Wait, so the user can read what's on the screen. Prompt the user
1635 to continue by pressing RETURN. */
1638 prompt_for_continue ()
1641 char cont_prompt[120];
1643 if (annotation_level > 1)
1644 printf_unfiltered ("\n\032\032pre-prompt-for-continue\n");
1646 strcpy (cont_prompt,
1647 "---Type <return> to continue, or q <return> to quit---");
1648 if (annotation_level > 1)
1649 strcat (cont_prompt, "\n\032\032prompt-for-continue\n");
1651 /* We must do this *before* we call gdb_readline, else it will eventually
1652 call us -- thinking that we're trying to print beyond the end of the
1654 reinitialize_more_filter ();
1657 /* On a real operating system, the user can quit with SIGINT.
1660 'q' is provided on all systems so users don't have to change habits
1661 from system to system, and because telling them what to do in
1662 the prompt is more user-friendly than expecting them to think of
1664 /* Call readline, not gdb_readline, because GO32 readline handles control-C
1665 whereas control-C to gdb_readline will cause the user to get dumped
1667 ignore = readline (cont_prompt);
1669 if (annotation_level > 1)
1670 printf_unfiltered ("\n\032\032post-prompt-for-continue\n");
1675 while (*p == ' ' || *p == '\t')
1680 request_quit (SIGINT);
1682 async_request_quit (0);
1688 /* Now we have to do this again, so that GDB will know that it doesn't
1689 need to save the ---Type <return>--- line at the top of the screen. */
1690 reinitialize_more_filter ();
1692 dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */
1695 /* Reinitialize filter; ie. tell it to reset to original values. */
1698 reinitialize_more_filter ()
1704 /* Indicate that if the next sequence of characters overflows the line,
1705 a newline should be inserted here rather than when it hits the end.
1706 If INDENT is non-null, it is a string to be printed to indent the
1707 wrapped part on the next line. INDENT must remain accessible until
1708 the next call to wrap_here() or until a newline is printed through
1711 If the line is already overfull, we immediately print a newline and
1712 the indentation, and disable further wrapping.
1714 If we don't know the width of lines, but we know the page height,
1715 we must not wrap words, but should still keep track of newlines
1716 that were explicitly printed.
1718 INDENT should not contain tabs, as that will mess up the char count
1719 on the next line. FIXME.
1721 This routine is guaranteed to force out any output which has been
1722 squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be
1723 used to force out output from the wrap_buffer. */
1729 /* This should have been allocated, but be paranoid anyway. */
1735 *wrap_pointer = '\0';
1736 fputs_unfiltered (wrap_buffer, gdb_stdout);
1738 wrap_pointer = wrap_buffer;
1739 wrap_buffer[0] = '\0';
1740 if (chars_per_line == UINT_MAX) /* No line overflow checking */
1744 else if (chars_printed >= chars_per_line)
1746 puts_filtered ("\n");
1748 puts_filtered (indent);
1753 wrap_column = chars_printed;
1757 wrap_indent = indent;
1761 /* Ensure that whatever gets printed next, using the filtered output
1762 commands, starts at the beginning of the line. I.E. if there is
1763 any pending output for the current line, flush it and start a new
1764 line. Otherwise do nothing. */
1769 if (chars_printed > 0)
1771 puts_filtered ("\n");
1776 /* Like fputs but if FILTER is true, pause after every screenful.
1778 Regardless of FILTER can wrap at points other than the final
1779 character of a line.
1781 Unlike fputs, fputs_maybe_filtered does not return a value.
1782 It is OK for LINEBUFFER to be NULL, in which case just don't print
1785 Note that a longjmp to top level may occur in this routine (only if
1786 FILTER is true) (since prompt_for_continue may do so) so this
1787 routine should not be called when cleanups are not in place. */
1790 fputs_maybe_filtered (linebuffer, stream, filter)
1791 const char *linebuffer;
1792 struct ui_file *stream;
1795 const char *lineptr;
1797 if (linebuffer == 0)
1800 /* Don't do any filtering if it is disabled. */
1801 if ((stream != gdb_stdout) || !pagination_enabled
1802 || (lines_per_page == UINT_MAX && chars_per_line == UINT_MAX))
1804 fputs_unfiltered (linebuffer, stream);
1808 /* Go through and output each character. Show line extension
1809 when this is necessary; prompt user for new page when this is
1812 lineptr = linebuffer;
1815 /* Possible new page. */
1817 (lines_printed >= lines_per_page - 1))
1818 prompt_for_continue ();
1820 while (*lineptr && *lineptr != '\n')
1822 /* Print a single line. */
1823 if (*lineptr == '\t')
1826 *wrap_pointer++ = '\t';
1828 fputc_unfiltered ('\t', stream);
1829 /* Shifting right by 3 produces the number of tab stops
1830 we have already passed, and then adding one and
1831 shifting left 3 advances to the next tab stop. */
1832 chars_printed = ((chars_printed >> 3) + 1) << 3;
1838 *wrap_pointer++ = *lineptr;
1840 fputc_unfiltered (*lineptr, stream);
1845 if (chars_printed >= chars_per_line)
1847 unsigned int save_chars = chars_printed;
1851 /* If we aren't actually wrapping, don't output newline --
1852 if chars_per_line is right, we probably just overflowed
1853 anyway; if it's wrong, let us keep going. */
1855 fputc_unfiltered ('\n', stream);
1857 /* Possible new page. */
1858 if (lines_printed >= lines_per_page - 1)
1859 prompt_for_continue ();
1861 /* Now output indentation and wrapped string */
1864 fputs_unfiltered (wrap_indent, stream);
1865 *wrap_pointer = '\0'; /* Null-terminate saved stuff */
1866 fputs_unfiltered (wrap_buffer, stream); /* and eject it */
1867 /* FIXME, this strlen is what prevents wrap_indent from
1868 containing tabs. However, if we recurse to print it
1869 and count its chars, we risk trouble if wrap_indent is
1870 longer than (the user settable) chars_per_line.
1871 Note also that this can set chars_printed > chars_per_line
1872 if we are printing a long string. */
1873 chars_printed = strlen (wrap_indent)
1874 + (save_chars - wrap_column);
1875 wrap_pointer = wrap_buffer; /* Reset buffer */
1876 wrap_buffer[0] = '\0';
1877 wrap_column = 0; /* And disable fancy wrap */
1882 if (*lineptr == '\n')
1885 wrap_here ((char *) 0); /* Spit out chars, cancel further wraps */
1887 fputc_unfiltered ('\n', stream);
1894 fputs_filtered (linebuffer, stream)
1895 const char *linebuffer;
1896 struct ui_file *stream;
1898 fputs_maybe_filtered (linebuffer, stream, 1);
1902 putchar_unfiltered (c)
1906 ui_file_write (gdb_stdout, &buf, 1);
1911 fputc_unfiltered (c, stream)
1913 struct ui_file *stream;
1916 ui_file_write (stream, &buf, 1);
1921 fputc_filtered (c, stream)
1923 struct ui_file *stream;
1929 fputs_filtered (buf, stream);
1933 /* puts_debug is like fputs_unfiltered, except it prints special
1934 characters in printable fashion. */
1937 puts_debug (prefix, string, suffix)
1944 /* Print prefix and suffix after each line. */
1945 static int new_line = 1;
1946 static int return_p = 0;
1947 static char *prev_prefix = "";
1948 static char *prev_suffix = "";
1950 if (*string == '\n')
1953 /* If the prefix is changing, print the previous suffix, a new line,
1954 and the new prefix. */
1955 if ((return_p || (strcmp (prev_prefix, prefix) != 0)) && !new_line)
1957 fputs_unfiltered (prev_suffix, gdb_stdlog);
1958 fputs_unfiltered ("\n", gdb_stdlog);
1959 fputs_unfiltered (prefix, gdb_stdlog);
1962 /* Print prefix if we printed a newline during the previous call. */
1966 fputs_unfiltered (prefix, gdb_stdlog);
1969 prev_prefix = prefix;
1970 prev_suffix = suffix;
1972 /* Output characters in a printable format. */
1973 while ((ch = *string++) != '\0')
1979 fputc_unfiltered (ch, gdb_stdlog);
1982 fprintf_unfiltered (gdb_stdlog, "\\x%02x", ch & 0xff);
1986 fputs_unfiltered ("\\\\", gdb_stdlog);
1989 fputs_unfiltered ("\\b", gdb_stdlog);
1992 fputs_unfiltered ("\\f", gdb_stdlog);
1996 fputs_unfiltered ("\\n", gdb_stdlog);
1999 fputs_unfiltered ("\\r", gdb_stdlog);
2002 fputs_unfiltered ("\\t", gdb_stdlog);
2005 fputs_unfiltered ("\\v", gdb_stdlog);
2009 return_p = ch == '\r';
2012 /* Print suffix if we printed a newline. */
2015 fputs_unfiltered (suffix, gdb_stdlog);
2016 fputs_unfiltered ("\n", gdb_stdlog);
2021 /* Print a variable number of ARGS using format FORMAT. If this
2022 information is going to put the amount written (since the last call
2023 to REINITIALIZE_MORE_FILTER or the last page break) over the page size,
2024 call prompt_for_continue to get the users permision to continue.
2026 Unlike fprintf, this function does not return a value.
2028 We implement three variants, vfprintf (takes a vararg list and stream),
2029 fprintf (takes a stream to write on), and printf (the usual).
2031 Note also that a longjmp to top level may occur in this routine
2032 (since prompt_for_continue may do so) so this routine should not be
2033 called when cleanups are not in place. */
2036 vfprintf_maybe_filtered (stream, format, args, filter)
2037 struct ui_file *stream;
2043 struct cleanup *old_cleanups;
2045 vasprintf (&linebuffer, format, args);
2046 if (linebuffer == NULL)
2048 fputs_unfiltered ("\ngdb: virtual memory exhausted.\n", gdb_stderr);
2051 old_cleanups = make_cleanup (free, linebuffer);
2052 fputs_maybe_filtered (linebuffer, stream, filter);
2053 do_cleanups (old_cleanups);
2058 vfprintf_filtered (stream, format, args)
2059 struct ui_file *stream;
2063 vfprintf_maybe_filtered (stream, format, args, 1);
2067 vfprintf_unfiltered (stream, format, args)
2068 struct ui_file *stream;
2073 struct cleanup *old_cleanups;
2075 vasprintf (&linebuffer, format, args);
2076 if (linebuffer == NULL)
2078 fputs_unfiltered ("\ngdb: virtual memory exhausted.\n", gdb_stderr);
2081 old_cleanups = make_cleanup (free, linebuffer);
2082 fputs_unfiltered (linebuffer, stream);
2083 do_cleanups (old_cleanups);
2087 vprintf_filtered (format, args)
2091 vfprintf_maybe_filtered (gdb_stdout, format, args, 1);
2095 vprintf_unfiltered (format, args)
2099 vfprintf_unfiltered (gdb_stdout, format, args);
2103 fprintf_filtered (struct ui_file * stream, const char *format,...)
2106 va_start (args, format);
2107 vfprintf_filtered (stream, format, args);
2112 fprintf_unfiltered (struct ui_file * stream, const char *format,...)
2115 va_start (args, format);
2116 vfprintf_unfiltered (stream, format, args);
2120 /* Like fprintf_filtered, but prints its result indented.
2121 Called as fprintfi_filtered (spaces, stream, format, ...); */
2124 fprintfi_filtered (int spaces, struct ui_file * stream, const char *format,...)
2127 va_start (args, format);
2128 print_spaces_filtered (spaces, stream);
2130 vfprintf_filtered (stream, format, args);
2136 printf_filtered (const char *format,...)
2139 va_start (args, format);
2140 vfprintf_filtered (gdb_stdout, format, args);
2146 printf_unfiltered (const char *format,...)
2149 va_start (args, format);
2150 vfprintf_unfiltered (gdb_stdout, format, args);
2154 /* Like printf_filtered, but prints it's result indented.
2155 Called as printfi_filtered (spaces, format, ...); */
2158 printfi_filtered (int spaces, const char *format,...)
2161 va_start (args, format);
2162 print_spaces_filtered (spaces, gdb_stdout);
2163 vfprintf_filtered (gdb_stdout, format, args);
2167 /* Easy -- but watch out!
2169 This routine is *not* a replacement for puts()! puts() appends a newline.
2170 This one doesn't, and had better not! */
2173 puts_filtered (string)
2176 fputs_filtered (string, gdb_stdout);
2180 puts_unfiltered (string)
2183 fputs_unfiltered (string, gdb_stdout);
2186 /* Return a pointer to N spaces and a null. The pointer is good
2187 until the next call to here. */
2193 static char *spaces = 0;
2194 static int max_spaces = -1;
2200 spaces = (char *) xmalloc (n + 1);
2201 for (t = spaces + n; t != spaces;)
2207 return spaces + max_spaces - n;
2210 /* Print N spaces. */
2212 print_spaces_filtered (n, stream)
2214 struct ui_file *stream;
2216 fputs_filtered (n_spaces (n), stream);
2219 /* C++ demangler stuff. */
2221 /* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language
2222 LANG, using demangling args ARG_MODE, and print it filtered to STREAM.
2223 If the name is not mangled, or the language for the name is unknown, or
2224 demangling is off, the name is printed in its "raw" form. */
2227 fprintf_symbol_filtered (stream, name, lang, arg_mode)
2228 struct ui_file *stream;
2237 /* If user wants to see raw output, no problem. */
2240 fputs_filtered (name, stream);
2246 case language_cplus:
2247 demangled = cplus_demangle (name, arg_mode);
2250 demangled = cplus_demangle (name, arg_mode | DMGL_JAVA);
2252 case language_chill:
2253 demangled = chill_demangle (name);
2259 fputs_filtered (demangled ? demangled : name, stream);
2260 if (demangled != NULL)
2268 /* Do a strcmp() type operation on STRING1 and STRING2, ignoring any
2269 differences in whitespace. Returns 0 if they match, non-zero if they
2270 don't (slightly different than strcmp()'s range of return values).
2272 As an extra hack, string1=="FOO(ARGS)" matches string2=="FOO".
2273 This "feature" is useful when searching for matching C++ function names
2274 (such as if the user types 'break FOO', where FOO is a mangled C++
2278 strcmp_iw (string1, string2)
2279 const char *string1;
2280 const char *string2;
2282 while ((*string1 != '\0') && (*string2 != '\0'))
2284 while (isspace (*string1))
2288 while (isspace (*string2))
2292 if (*string1 != *string2)
2296 if (*string1 != '\0')
2302 return (*string1 != '\0' && *string1 != '(') || (*string2 != '\0');
2308 ** Answer whether string_to_compare is a full or partial match to
2309 ** template_string. The partial match must be in sequence starting
2313 subset_compare (string_to_compare, template_string)
2314 char *string_to_compare;
2315 char *template_string;
2318 if (template_string != (char *) NULL && string_to_compare != (char *) NULL &&
2319 strlen (string_to_compare) <= strlen (template_string))
2320 match = (strncmp (template_string,
2322 strlen (string_to_compare)) == 0);
2329 static void pagination_on_command PARAMS ((char *arg, int from_tty));
2331 pagination_on_command (arg, from_tty)
2335 pagination_enabled = 1;
2338 static void pagination_on_command PARAMS ((char *arg, int from_tty));
2340 pagination_off_command (arg, from_tty)
2344 pagination_enabled = 0;
2351 struct cmd_list_element *c;
2353 c = add_set_cmd ("width", class_support, var_uinteger,
2354 (char *) &chars_per_line,
2355 "Set number of characters gdb thinks are in a line.",
2357 add_show_from_set (c, &showlist);
2358 c->function.sfunc = set_width_command;
2361 (add_set_cmd ("height", class_support,
2362 var_uinteger, (char *) &lines_per_page,
2363 "Set number of lines gdb thinks are in a page.", &setlist),
2368 /* If the output is not a terminal, don't paginate it. */
2369 if (!ui_file_isatty (gdb_stdout))
2370 lines_per_page = UINT_MAX;
2372 set_width_command ((char *) NULL, 0, c);
2375 (add_set_cmd ("demangle", class_support, var_boolean,
2377 "Set demangling of encoded C++ names when displaying symbols.",
2382 (add_set_cmd ("pagination", class_support,
2383 var_boolean, (char *) &pagination_enabled,
2384 "Set state of pagination.", &setlist),
2389 add_com ("am", class_support, pagination_on_command,
2390 "Enable pagination");
2391 add_com ("sm", class_support, pagination_off_command,
2392 "Disable pagination");
2396 (add_set_cmd ("sevenbit-strings", class_support, var_boolean,
2397 (char *) &sevenbit_strings,
2398 "Set printing of 8-bit characters in strings as \\nnn.",
2403 (add_set_cmd ("asm-demangle", class_support, var_boolean,
2404 (char *) &asm_demangle,
2405 "Set demangling of C++ names in disassembly listings.",
2410 /* Machine specific function to handle SIGWINCH signal. */
2412 #ifdef SIGWINCH_HANDLER_BODY
2413 SIGWINCH_HANDLER_BODY
2416 /* Support for converting target fp numbers into host DOUBLEST format. */
2418 /* XXX - This code should really be in libiberty/floatformat.c, however
2419 configuration issues with libiberty made this very difficult to do in the
2422 #include "floatformat.h"
2423 #include <math.h> /* ldexp */
2425 /* The odds that CHAR_BIT will be anything but 8 are low enough that I'm not
2426 going to bother with trying to muck around with whether it is defined in
2427 a system header, what we do if not, etc. */
2428 #define FLOATFORMAT_CHAR_BIT 8
2430 static unsigned long get_field PARAMS ((unsigned char *,
2431 enum floatformat_byteorders,
2436 /* Extract a field which starts at START and is LEN bytes long. DATA and
2437 TOTAL_LEN are the thing we are extracting it from, in byteorder ORDER. */
2438 static unsigned long
2439 get_field (data, order, total_len, start, len)
2440 unsigned char *data;
2441 enum floatformat_byteorders order;
2442 unsigned int total_len;
2446 unsigned long result;
2447 unsigned int cur_byte;
2450 /* Start at the least significant part of the field. */
2451 if (order == floatformat_little || order == floatformat_littlebyte_bigword)
2453 /* We start counting from the other end (i.e, from the high bytes
2454 rather than the low bytes). As such, we need to be concerned
2455 with what happens if bit 0 doesn't start on a byte boundary.
2456 I.e, we need to properly handle the case where total_len is
2457 not evenly divisible by 8. So we compute ``excess'' which
2458 represents the number of bits from the end of our starting
2459 byte needed to get to bit 0. */
2460 int excess = FLOATFORMAT_CHAR_BIT - (total_len % FLOATFORMAT_CHAR_BIT);
2461 cur_byte = (total_len / FLOATFORMAT_CHAR_BIT)
2462 - ((start + len + excess) / FLOATFORMAT_CHAR_BIT);
2463 cur_bitshift = ((start + len + excess) % FLOATFORMAT_CHAR_BIT)
2464 - FLOATFORMAT_CHAR_BIT;
2468 cur_byte = (start + len) / FLOATFORMAT_CHAR_BIT;
2470 ((start + len) % FLOATFORMAT_CHAR_BIT) - FLOATFORMAT_CHAR_BIT;
2472 if (cur_bitshift > -FLOATFORMAT_CHAR_BIT)
2473 result = *(data + cur_byte) >> (-cur_bitshift);
2476 cur_bitshift += FLOATFORMAT_CHAR_BIT;
2477 if (order == floatformat_little || order == floatformat_littlebyte_bigword)
2482 /* Move towards the most significant part of the field. */
2483 while (cur_bitshift < len)
2485 result |= (unsigned long)*(data + cur_byte) << cur_bitshift;
2486 cur_bitshift += FLOATFORMAT_CHAR_BIT;
2487 if (order == floatformat_little || order == floatformat_littlebyte_bigword)
2492 if (len < sizeof(result) * FLOATFORMAT_CHAR_BIT)
2493 /* Mask out bits which are not part of the field */
2494 result &= ((1UL << len) - 1);
2498 /* Convert from FMT to a DOUBLEST.
2499 FROM is the address of the extended float.
2500 Store the DOUBLEST in *TO. */
2503 floatformat_to_doublest (fmt, from, to)
2504 const struct floatformat *fmt;
2508 unsigned char *ufrom = (unsigned char *) from;
2512 unsigned int mant_bits, mant_off;
2514 int special_exponent; /* It's a NaN, denorm or zero */
2516 /* If the mantissa bits are not contiguous from one end of the
2517 mantissa to the other, we need to make a private copy of the
2518 source bytes that is in the right order since the unpacking
2519 algorithm assumes that the bits are contiguous.
2521 Swap the bytes individually rather than accessing them through
2522 "long *" since we have no guarantee that they start on a long
2523 alignment, and also sizeof(long) for the host could be different
2524 than sizeof(long) for the target. FIXME: Assumes sizeof(long)
2525 for the target is 4. */
2527 if (fmt->byteorder == floatformat_littlebyte_bigword)
2529 static unsigned char *newfrom;
2530 unsigned char *swapin, *swapout;
2533 longswaps = fmt->totalsize / FLOATFORMAT_CHAR_BIT;
2536 if (newfrom == NULL)
2538 newfrom = (unsigned char *) xmalloc (fmt->totalsize);
2543 while (longswaps-- > 0)
2545 /* This is ugly, but efficient */
2546 *swapout++ = swapin[4];
2547 *swapout++ = swapin[5];
2548 *swapout++ = swapin[6];
2549 *swapout++ = swapin[7];
2550 *swapout++ = swapin[0];
2551 *swapout++ = swapin[1];
2552 *swapout++ = swapin[2];
2553 *swapout++ = swapin[3];
2558 exponent = get_field (ufrom, fmt->byteorder, fmt->totalsize,
2559 fmt->exp_start, fmt->exp_len);
2560 /* Note that if exponent indicates a NaN, we can't really do anything useful
2561 (not knowing if the host has NaN's, or how to build one). So it will
2562 end up as an infinity or something close; that is OK. */
2564 mant_bits_left = fmt->man_len;
2565 mant_off = fmt->man_start;
2568 special_exponent = exponent == 0 || exponent == fmt->exp_nan;
2570 /* Don't bias NaNs. Use minimum exponent for denorms. For simplicity,
2571 we don't check for zero as the exponent doesn't matter. */
2572 if (!special_exponent)
2573 exponent -= fmt->exp_bias;
2574 else if (exponent == 0)
2575 exponent = 1 - fmt->exp_bias;
2577 /* Build the result algebraically. Might go infinite, underflow, etc;
2580 /* If this format uses a hidden bit, explicitly add it in now. Otherwise,
2581 increment the exponent by one to account for the integer bit. */
2583 if (!special_exponent)
2585 if (fmt->intbit == floatformat_intbit_no)
2586 dto = ldexp (1.0, exponent);
2591 while (mant_bits_left > 0)
2593 mant_bits = min (mant_bits_left, 32);
2595 mant = get_field (ufrom, fmt->byteorder, fmt->totalsize,
2596 mant_off, mant_bits);
2598 dto += ldexp ((double) mant, exponent - mant_bits);
2599 exponent -= mant_bits;
2600 mant_off += mant_bits;
2601 mant_bits_left -= mant_bits;
2604 /* Negate it if negative. */
2605 if (get_field (ufrom, fmt->byteorder, fmt->totalsize, fmt->sign_start, 1))
2610 static void put_field PARAMS ((unsigned char *, enum floatformat_byteorders,
2616 /* Set a field which starts at START and is LEN bytes long. DATA and
2617 TOTAL_LEN are the thing we are extracting it from, in byteorder ORDER. */
2619 put_field (data, order, total_len, start, len, stuff_to_put)
2620 unsigned char *data;
2621 enum floatformat_byteorders order;
2622 unsigned int total_len;
2625 unsigned long stuff_to_put;
2627 unsigned int cur_byte;
2630 /* Start at the least significant part of the field. */
2631 if (order == floatformat_little || order == floatformat_littlebyte_bigword)
2633 int excess = FLOATFORMAT_CHAR_BIT - (total_len % FLOATFORMAT_CHAR_BIT);
2634 cur_byte = (total_len / FLOATFORMAT_CHAR_BIT)
2635 - ((start + len + excess) / FLOATFORMAT_CHAR_BIT);
2636 cur_bitshift = ((start + len + excess) % FLOATFORMAT_CHAR_BIT)
2637 - FLOATFORMAT_CHAR_BIT;
2641 cur_byte = (start + len) / FLOATFORMAT_CHAR_BIT;
2643 ((start + len) % FLOATFORMAT_CHAR_BIT) - FLOATFORMAT_CHAR_BIT;
2645 if (cur_bitshift > -FLOATFORMAT_CHAR_BIT)
2647 *(data + cur_byte) &=
2648 ~(((1 << ((start + len) % FLOATFORMAT_CHAR_BIT)) - 1)
2649 << (-cur_bitshift));
2650 *(data + cur_byte) |=
2651 (stuff_to_put & ((1 << FLOATFORMAT_CHAR_BIT) - 1)) << (-cur_bitshift);
2653 cur_bitshift += FLOATFORMAT_CHAR_BIT;
2654 if (order == floatformat_little || order == floatformat_littlebyte_bigword)
2659 /* Move towards the most significant part of the field. */
2660 while (cur_bitshift < len)
2662 if (len - cur_bitshift < FLOATFORMAT_CHAR_BIT)
2664 /* This is the last byte. */
2665 *(data + cur_byte) &=
2666 ~((1 << (len - cur_bitshift)) - 1);
2667 *(data + cur_byte) |= (stuff_to_put >> cur_bitshift);
2670 *(data + cur_byte) = ((stuff_to_put >> cur_bitshift)
2671 & ((1 << FLOATFORMAT_CHAR_BIT) - 1));
2672 cur_bitshift += FLOATFORMAT_CHAR_BIT;
2673 if (order == floatformat_little || order == floatformat_littlebyte_bigword)
2680 #ifdef HAVE_LONG_DOUBLE
2681 /* Return the fractional part of VALUE, and put the exponent of VALUE in *EPTR.
2682 The range of the returned value is >= 0.5 and < 1.0. This is equivalent to
2683 frexp, but operates on the long double data type. */
2685 static long double ldfrexp PARAMS ((long double value, int *eptr));
2688 ldfrexp (value, eptr)
2695 /* Unfortunately, there are no portable functions for extracting the exponent
2696 of a long double, so we have to do it iteratively by multiplying or dividing
2697 by two until the fraction is between 0.5 and 1.0. */
2705 if (value >= tmp) /* Value >= 1.0 */
2706 while (value >= tmp)
2711 else if (value != 0.0l) /* Value < 1.0 and > 0.0 */
2725 #endif /* HAVE_LONG_DOUBLE */
2728 /* The converse: convert the DOUBLEST *FROM to an extended float
2729 and store where TO points. Neither FROM nor TO have any alignment
2733 floatformat_from_doublest (fmt, from, to)
2734 CONST struct floatformat *fmt;
2741 unsigned int mant_bits, mant_off;
2743 unsigned char *uto = (unsigned char *) to;
2745 memcpy (&dfrom, from, sizeof (dfrom));
2746 memset (uto, 0, (fmt->totalsize + FLOATFORMAT_CHAR_BIT - 1)
2747 / FLOATFORMAT_CHAR_BIT);
2749 return; /* Result is zero */
2750 if (dfrom != dfrom) /* Result is NaN */
2753 put_field (uto, fmt->byteorder, fmt->totalsize, fmt->exp_start,
2754 fmt->exp_len, fmt->exp_nan);
2755 /* Be sure it's not infinity, but NaN value is irrel */
2756 put_field (uto, fmt->byteorder, fmt->totalsize, fmt->man_start,
2761 /* If negative, set the sign bit. */
2764 put_field (uto, fmt->byteorder, fmt->totalsize, fmt->sign_start, 1, 1);
2768 if (dfrom + dfrom == dfrom && dfrom != 0.0) /* Result is Infinity */
2770 /* Infinity exponent is same as NaN's. */
2771 put_field (uto, fmt->byteorder, fmt->totalsize, fmt->exp_start,
2772 fmt->exp_len, fmt->exp_nan);
2773 /* Infinity mantissa is all zeroes. */
2774 put_field (uto, fmt->byteorder, fmt->totalsize, fmt->man_start,
2779 #ifdef HAVE_LONG_DOUBLE
2780 mant = ldfrexp (dfrom, &exponent);
2782 mant = frexp (dfrom, &exponent);
2785 put_field (uto, fmt->byteorder, fmt->totalsize, fmt->exp_start, fmt->exp_len,
2786 exponent + fmt->exp_bias - 1);
2788 mant_bits_left = fmt->man_len;
2789 mant_off = fmt->man_start;
2790 while (mant_bits_left > 0)
2792 unsigned long mant_long;
2793 mant_bits = mant_bits_left < 32 ? mant_bits_left : 32;
2795 mant *= 4294967296.0;
2796 mant_long = ((unsigned long) mant) & 0xffffffffL;
2799 /* If the integer bit is implicit, then we need to discard it.
2800 If we are discarding a zero, we should be (but are not) creating
2801 a denormalized number which means adjusting the exponent
2803 if (mant_bits_left == fmt->man_len
2804 && fmt->intbit == floatformat_intbit_no)
2807 mant_long &= 0xffffffffL;
2813 /* The bits we want are in the most significant MANT_BITS bits of
2814 mant_long. Move them to the least significant. */
2815 mant_long >>= 32 - mant_bits;
2818 put_field (uto, fmt->byteorder, fmt->totalsize,
2819 mant_off, mant_bits, mant_long);
2820 mant_off += mant_bits;
2821 mant_bits_left -= mant_bits;
2823 if (fmt->byteorder == floatformat_littlebyte_bigword)
2826 unsigned char *swaplow = uto;
2827 unsigned char *swaphigh = uto + 4;
2830 for (count = 0; count < 4; count++)
2833 *swaplow++ = *swaphigh;
2839 /* print routines to handle variable size regs, etc. */
2841 /* temporary storage using circular buffer */
2847 static char buf[NUMCELLS][CELLSIZE];
2848 static int cell = 0;
2849 if (++cell >= NUMCELLS)
2857 return (TARGET_PTR_BIT / 8 * 2);
2861 paddr (CORE_ADDR addr)
2863 return phex (addr, TARGET_PTR_BIT / 8);
2867 paddr_nz (CORE_ADDR addr)
2869 return phex_nz (addr, TARGET_PTR_BIT / 8);
2873 decimal2str (char *paddr_str, char *sign, ULONGEST addr)
2875 /* steal code from valprint.c:print_decimal(). Should this worry
2876 about the real size of addr as the above does? */
2877 unsigned long temp[3];
2881 temp[i] = addr % (1000 * 1000 * 1000);
2882 addr /= (1000 * 1000 * 1000);
2885 while (addr != 0 && i < (sizeof (temp) / sizeof (temp[0])));
2889 sprintf (paddr_str, "%s%lu",
2893 sprintf (paddr_str, "%s%lu%09lu",
2894 sign, temp[1], temp[0]);
2897 sprintf (paddr_str, "%s%lu%09lu%09lu",
2898 sign, temp[2], temp[1], temp[0]);
2906 paddr_u (CORE_ADDR addr)
2908 char *paddr_str = get_cell ();
2909 decimal2str (paddr_str, "", addr);
2914 paddr_d (LONGEST addr)
2916 char *paddr_str = get_cell ();
2918 decimal2str (paddr_str, "-", -addr);
2920 decimal2str (paddr_str, "", addr);
2924 /* eliminate warning from compiler on 32-bit systems */
2925 static int thirty_two = 32;
2928 phex (ULONGEST l, int sizeof_l)
2930 char *str = get_cell ();
2934 sprintf (str, "%08lx%08lx",
2935 (unsigned long) (l >> thirty_two),
2936 (unsigned long) (l & 0xffffffff));
2939 sprintf (str, "%08lx", (unsigned long) l);
2942 sprintf (str, "%04x", (unsigned short) (l & 0xffff));
2945 phex (l, sizeof (l));
2952 phex_nz (ULONGEST l, int sizeof_l)
2954 char *str = get_cell ();
2959 unsigned long high = (unsigned long) (l >> thirty_two);
2961 sprintf (str, "%lx", (unsigned long) (l & 0xffffffff));
2963 sprintf (str, "%lx%08lx",
2964 high, (unsigned long) (l & 0xffffffff));
2968 sprintf (str, "%lx", (unsigned long) l);
2971 sprintf (str, "%x", (unsigned short) (l & 0xffff));
2974 phex_nz (l, sizeof (l));