1 /* General utility routines for GDB, the GNU debugger.
3 Copyright 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
4 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 Free Software
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 59 Temple Place - Suite 330,
22 Boston, MA 02111-1307, USA. */
25 #include "gdb_assert.h"
27 #include "gdb_string.h"
28 #include "event-top.h"
31 #include "tui/tui.h" /* For tui_get_command_dimension. */
38 /* SunOS's curses.h has a '#define reg register' in it. Thank you Sun. */
49 #include "expression.h"
53 #include "filenames.h"
56 #include "inferior.h" /* for signed_pointer_to_address */
58 #include <sys/param.h> /* For MAXPATHLEN */
60 #include "gdb_curses.h"
62 #include "readline/readline.h"
64 #ifdef NEED_DECLARATION_MALLOC
65 extern PTR
malloc (); /* OK: PTR */
67 #ifdef NEED_DECLARATION_REALLOC
68 extern PTR
realloc (); /* OK: PTR */
70 #ifdef NEED_DECLARATION_FREE
73 /* Actually, we'll never have the decl, since we don't define _GNU_SOURCE. */
74 #if defined(HAVE_CANONICALIZE_FILE_NAME) \
75 && defined(NEED_DECLARATION_CANONICALIZE_FILE_NAME)
76 extern char *canonicalize_file_name (const char *);
79 /* readline defines this. */
82 void (*deprecated_error_begin_hook
) (void);
84 /* Holds the last error message issued by gdb */
86 static struct ui_file
*gdb_lasterr
;
88 /* Prototypes for local functions */
90 static void vfprintf_maybe_filtered (struct ui_file
*, const char *,
93 static void fputs_maybe_filtered (const char *, struct ui_file
*, int);
95 static void do_my_cleanups (struct cleanup
**, struct cleanup
*);
97 static void prompt_for_continue (void);
99 static void set_screen_size (void);
100 static void set_width (void);
102 static NORETURN
void error_stream_1 (struct ui_file
*stream
,
103 enum return_reason reason
) ATTR_NORETURN
;
105 /* Chain of cleanup actions established with make_cleanup,
106 to be executed if an error happens. */
108 static struct cleanup
*cleanup_chain
; /* cleaned up after a failed command */
109 static struct cleanup
*final_cleanup_chain
; /* cleaned up when gdb exits */
110 static struct cleanup
*run_cleanup_chain
; /* cleaned up on each 'run' */
111 static struct cleanup
*exec_cleanup_chain
; /* cleaned up on each execution command */
112 /* cleaned up on each error from within an execution command */
113 static struct cleanup
*exec_error_cleanup_chain
;
115 /* Pointer to what is left to do for an execution command after the
116 target stops. Used only in asynchronous mode, by targets that
117 support async execution. The finish and until commands use it. So
118 does the target extended-remote command. */
119 struct continuation
*cmd_continuation
;
120 struct continuation
*intermediate_continuation
;
122 /* Nonzero if we have job control. */
126 /* Nonzero means a quit has been requested. */
130 /* Nonzero means quit immediately if Control-C is typed now, rather
131 than waiting until QUIT is executed. Be careful in setting this;
132 code which executes with immediate_quit set has to be very careful
133 about being able to deal with being interrupted at any time. It is
134 almost always better to use QUIT; the only exception I can think of
135 is being able to quit out of a system call (using EINTR loses if
136 the SIGINT happens between the previous QUIT and the system call).
137 To immediately quit in the case in which a SIGINT happens between
138 the previous QUIT and setting immediate_quit (desirable anytime we
139 expect to block), call QUIT after setting immediate_quit. */
143 /* Nonzero means that encoded C++/ObjC names should be printed out in their
144 C++/ObjC form rather than raw. */
148 /* Nonzero means that encoded C++/ObjC names should be printed out in their
149 C++/ObjC form even in assembler language displays. If this is set, but
150 DEMANGLE is zero, names are printed raw, i.e. DEMANGLE controls. */
152 int asm_demangle
= 0;
154 /* Nonzero means that strings with character values >0x7F should be printed
155 as octal escapes. Zero means just print the value (e.g. it's an
156 international character, and the terminal or window can cope.) */
158 int sevenbit_strings
= 0;
160 /* String to be printed before error messages, if any. */
162 char *error_pre_print
;
164 /* String to be printed before quit messages, if any. */
166 char *quit_pre_print
;
168 /* String to be printed before warning messages, if any. */
170 char *warning_pre_print
= "\nwarning: ";
172 int pagination_enabled
= 1;
175 /* Add a new cleanup to the cleanup_chain,
176 and return the previous chain pointer
177 to be passed later to do_cleanups or discard_cleanups.
178 Args are FUNCTION to clean up with, and ARG to pass to it. */
181 make_cleanup (make_cleanup_ftype
*function
, void *arg
)
183 return make_my_cleanup (&cleanup_chain
, function
, arg
);
187 make_final_cleanup (make_cleanup_ftype
*function
, void *arg
)
189 return make_my_cleanup (&final_cleanup_chain
, function
, arg
);
193 make_run_cleanup (make_cleanup_ftype
*function
, void *arg
)
195 return make_my_cleanup (&run_cleanup_chain
, function
, arg
);
199 make_exec_cleanup (make_cleanup_ftype
*function
, void *arg
)
201 return make_my_cleanup (&exec_cleanup_chain
, function
, arg
);
205 make_exec_error_cleanup (make_cleanup_ftype
*function
, void *arg
)
207 return make_my_cleanup (&exec_error_cleanup_chain
, function
, arg
);
211 do_freeargv (void *arg
)
213 freeargv ((char **) arg
);
217 make_cleanup_freeargv (char **arg
)
219 return make_my_cleanup (&cleanup_chain
, do_freeargv
, arg
);
223 do_bfd_close_cleanup (void *arg
)
229 make_cleanup_bfd_close (bfd
*abfd
)
231 return make_cleanup (do_bfd_close_cleanup
, abfd
);
235 do_close_cleanup (void *arg
)
243 make_cleanup_close (int fd
)
245 int *saved_fd
= xmalloc (sizeof (fd
));
247 return make_cleanup (do_close_cleanup
, saved_fd
);
251 do_ui_file_delete (void *arg
)
253 ui_file_delete (arg
);
257 make_cleanup_ui_file_delete (struct ui_file
*arg
)
259 return make_my_cleanup (&cleanup_chain
, do_ui_file_delete
, arg
);
263 do_free_section_addr_info (void *arg
)
265 free_section_addr_info (arg
);
269 make_cleanup_free_section_addr_info (struct section_addr_info
*addrs
)
271 return make_my_cleanup (&cleanup_chain
, do_free_section_addr_info
, addrs
);
276 make_my_cleanup (struct cleanup
**pmy_chain
, make_cleanup_ftype
*function
,
280 = (struct cleanup
*) xmalloc (sizeof (struct cleanup
));
281 struct cleanup
*old_chain
= *pmy_chain
;
283 new->next
= *pmy_chain
;
284 new->function
= function
;
291 /* Discard cleanups and do the actions they describe
292 until we get back to the point OLD_CHAIN in the cleanup_chain. */
295 do_cleanups (struct cleanup
*old_chain
)
297 do_my_cleanups (&cleanup_chain
, old_chain
);
301 do_final_cleanups (struct cleanup
*old_chain
)
303 do_my_cleanups (&final_cleanup_chain
, old_chain
);
307 do_run_cleanups (struct cleanup
*old_chain
)
309 do_my_cleanups (&run_cleanup_chain
, old_chain
);
313 do_exec_cleanups (struct cleanup
*old_chain
)
315 do_my_cleanups (&exec_cleanup_chain
, old_chain
);
319 do_exec_error_cleanups (struct cleanup
*old_chain
)
321 do_my_cleanups (&exec_error_cleanup_chain
, old_chain
);
325 do_my_cleanups (struct cleanup
**pmy_chain
,
326 struct cleanup
*old_chain
)
329 while ((ptr
= *pmy_chain
) != old_chain
)
331 *pmy_chain
= ptr
->next
; /* Do this first incase recursion */
332 (*ptr
->function
) (ptr
->arg
);
337 /* Discard cleanups, not doing the actions they describe,
338 until we get back to the point OLD_CHAIN in the cleanup_chain. */
341 discard_cleanups (struct cleanup
*old_chain
)
343 discard_my_cleanups (&cleanup_chain
, old_chain
);
347 discard_final_cleanups (struct cleanup
*old_chain
)
349 discard_my_cleanups (&final_cleanup_chain
, old_chain
);
353 discard_exec_error_cleanups (struct cleanup
*old_chain
)
355 discard_my_cleanups (&exec_error_cleanup_chain
, old_chain
);
359 discard_my_cleanups (struct cleanup
**pmy_chain
,
360 struct cleanup
*old_chain
)
363 while ((ptr
= *pmy_chain
) != old_chain
)
365 *pmy_chain
= ptr
->next
;
370 /* Set the cleanup_chain to 0, and return the old cleanup chain. */
374 return save_my_cleanups (&cleanup_chain
);
378 save_final_cleanups (void)
380 return save_my_cleanups (&final_cleanup_chain
);
384 save_my_cleanups (struct cleanup
**pmy_chain
)
386 struct cleanup
*old_chain
= *pmy_chain
;
392 /* Restore the cleanup chain from a previously saved chain. */
394 restore_cleanups (struct cleanup
*chain
)
396 restore_my_cleanups (&cleanup_chain
, chain
);
400 restore_final_cleanups (struct cleanup
*chain
)
402 restore_my_cleanups (&final_cleanup_chain
, chain
);
406 restore_my_cleanups (struct cleanup
**pmy_chain
, struct cleanup
*chain
)
411 /* This function is useful for cleanups.
415 old_chain = make_cleanup (free_current_contents, &foo);
417 to arrange to free the object thus allocated. */
420 free_current_contents (void *ptr
)
422 void **location
= ptr
;
423 if (location
== NULL
)
424 internal_error (__FILE__
, __LINE__
,
425 "free_current_contents: NULL pointer");
426 if (*location
!= NULL
)
433 /* Provide a known function that does nothing, to use as a base for
434 for a possibly long chain of cleanups. This is useful where we
435 use the cleanup chain for handling normal cleanups as well as dealing
436 with cleanups that need to be done as a result of a call to error().
437 In such cases, we may not be certain where the first cleanup is, unless
438 we have a do-nothing one to always use as the base. */
441 null_cleanup (void *arg
)
445 /* Add a continuation to the continuation list, the global list
446 cmd_continuation. The new continuation will be added at the front.*/
448 add_continuation (void (*continuation_hook
) (struct continuation_arg
*),
449 struct continuation_arg
*arg_list
)
451 struct continuation
*continuation_ptr
;
454 (struct continuation
*) xmalloc (sizeof (struct continuation
));
455 continuation_ptr
->continuation_hook
= continuation_hook
;
456 continuation_ptr
->arg_list
= arg_list
;
457 continuation_ptr
->next
= cmd_continuation
;
458 cmd_continuation
= continuation_ptr
;
461 /* Walk down the cmd_continuation list, and execute all the
462 continuations. There is a problem though. In some cases new
463 continuations may be added while we are in the middle of this
464 loop. If this happens they will be added in the front, and done
465 before we have a chance of exhausting those that were already
466 there. We need to then save the beginning of the list in a pointer
467 and do the continuations from there on, instead of using the
468 global beginning of list as our iteration pointer.*/
470 do_all_continuations (void)
472 struct continuation
*continuation_ptr
;
473 struct continuation
*saved_continuation
;
475 /* Copy the list header into another pointer, and set the global
476 list header to null, so that the global list can change as a side
477 effect of invoking the continuations and the processing of
478 the preexisting continuations will not be affected. */
479 continuation_ptr
= cmd_continuation
;
480 cmd_continuation
= NULL
;
482 /* Work now on the list we have set aside. */
483 while (continuation_ptr
)
485 (continuation_ptr
->continuation_hook
) (continuation_ptr
->arg_list
);
486 saved_continuation
= continuation_ptr
;
487 continuation_ptr
= continuation_ptr
->next
;
488 xfree (saved_continuation
);
492 /* Walk down the cmd_continuation list, and get rid of all the
495 discard_all_continuations (void)
497 struct continuation
*continuation_ptr
;
499 while (cmd_continuation
)
501 continuation_ptr
= cmd_continuation
;
502 cmd_continuation
= continuation_ptr
->next
;
503 xfree (continuation_ptr
);
507 /* Add a continuation to the continuation list, the global list
508 intermediate_continuation. The new continuation will be added at the front.*/
510 add_intermediate_continuation (void (*continuation_hook
)
511 (struct continuation_arg
*),
512 struct continuation_arg
*arg_list
)
514 struct continuation
*continuation_ptr
;
517 (struct continuation
*) xmalloc (sizeof (struct continuation
));
518 continuation_ptr
->continuation_hook
= continuation_hook
;
519 continuation_ptr
->arg_list
= arg_list
;
520 continuation_ptr
->next
= intermediate_continuation
;
521 intermediate_continuation
= continuation_ptr
;
524 /* Walk down the cmd_continuation list, and execute all the
525 continuations. There is a problem though. In some cases new
526 continuations may be added while we are in the middle of this
527 loop. If this happens they will be added in the front, and done
528 before we have a chance of exhausting those that were already
529 there. We need to then save the beginning of the list in a pointer
530 and do the continuations from there on, instead of using the
531 global beginning of list as our iteration pointer.*/
533 do_all_intermediate_continuations (void)
535 struct continuation
*continuation_ptr
;
536 struct continuation
*saved_continuation
;
538 /* Copy the list header into another pointer, and set the global
539 list header to null, so that the global list can change as a side
540 effect of invoking the continuations and the processing of
541 the preexisting continuations will not be affected. */
542 continuation_ptr
= intermediate_continuation
;
543 intermediate_continuation
= NULL
;
545 /* Work now on the list we have set aside. */
546 while (continuation_ptr
)
548 (continuation_ptr
->continuation_hook
) (continuation_ptr
->arg_list
);
549 saved_continuation
= continuation_ptr
;
550 continuation_ptr
= continuation_ptr
->next
;
551 xfree (saved_continuation
);
555 /* Walk down the cmd_continuation list, and get rid of all the
558 discard_all_intermediate_continuations (void)
560 struct continuation
*continuation_ptr
;
562 while (intermediate_continuation
)
564 continuation_ptr
= intermediate_continuation
;
565 intermediate_continuation
= continuation_ptr
->next
;
566 xfree (continuation_ptr
);
572 /* Print a warning message. The first argument STRING is the warning
573 message, used as an fprintf format string, the second is the
574 va_list of arguments for that string. A warning is unfiltered (not
575 paginated) so that the user does not need to page through each
576 screen full of warnings when there are lots of them. */
579 vwarning (const char *string
, va_list args
)
581 if (deprecated_warning_hook
)
582 (*deprecated_warning_hook
) (string
, args
);
585 target_terminal_ours ();
586 wrap_here (""); /* Force out any buffered output */
587 gdb_flush (gdb_stdout
);
588 if (warning_pre_print
)
589 fputs_unfiltered (warning_pre_print
, gdb_stderr
);
590 vfprintf_unfiltered (gdb_stderr
, string
, args
);
591 fprintf_unfiltered (gdb_stderr
, "\n");
596 /* Print a warning message.
597 The first argument STRING is the warning message, used as a fprintf string,
598 and the remaining args are passed as arguments to it.
599 The primary difference between warnings and errors is that a warning
600 does not force the return to command level. */
603 warning (const char *string
, ...)
606 va_start (args
, string
);
607 vwarning (string
, args
);
611 /* Print an error message and return to command level.
612 The first argument STRING is the error message, used as a fprintf string,
613 and the remaining args are passed as arguments to it. */
616 verror (const char *string
, va_list args
)
618 struct ui_file
*tmp_stream
= mem_fileopen ();
619 make_cleanup_ui_file_delete (tmp_stream
);
620 vfprintf_unfiltered (tmp_stream
, string
, args
);
621 error_stream_1 (tmp_stream
, RETURN_ERROR
);
625 error (const char *string
, ...)
628 va_start (args
, string
);
629 verror (string
, args
);
633 /* Print an error message and quit.
634 The first argument STRING is the error message, used as a fprintf string,
635 and the remaining args are passed as arguments to it. */
638 vfatal (const char *string
, va_list args
)
640 struct ui_file
*tmp_stream
= mem_fileopen ();
641 make_cleanup_ui_file_delete (tmp_stream
);
642 vfprintf_unfiltered (tmp_stream
, string
, args
);
643 error_stream_1 (tmp_stream
, RETURN_QUIT
);
647 fatal (const char *string
, ...)
650 va_start (args
, string
);
651 vfatal (string
, args
);
656 do_write (void *data
, const char *buffer
, long length_buffer
)
658 ui_file_write (data
, buffer
, length_buffer
);
661 /* Cause a silent error to occur. Any error message is recorded
662 though it is not issued. */
664 error_silent (const char *string
, ...)
667 struct ui_file
*tmp_stream
= mem_fileopen ();
668 va_start (args
, string
);
669 make_cleanup_ui_file_delete (tmp_stream
);
670 vfprintf_unfiltered (tmp_stream
, string
, args
);
671 /* Copy the stream into the GDB_LASTERR buffer. */
672 ui_file_rewind (gdb_lasterr
);
673 ui_file_put (tmp_stream
, do_write
, gdb_lasterr
);
676 throw_exception (RETURN_ERROR
);
679 /* Output an error message including any pre-print text to gdb_stderr. */
681 error_output_message (char *pre_print
, char *msg
)
683 target_terminal_ours ();
684 wrap_here (""); /* Force out any buffered output */
685 gdb_flush (gdb_stdout
);
686 annotate_error_begin ();
688 fputs_filtered (pre_print
, gdb_stderr
);
689 fputs_filtered (msg
, gdb_stderr
);
690 fprintf_filtered (gdb_stderr
, "\n");
694 error_stream_1 (struct ui_file
*stream
, enum return_reason reason
)
696 if (deprecated_error_begin_hook
)
697 deprecated_error_begin_hook ();
699 /* Copy the stream into the GDB_LASTERR buffer. */
700 ui_file_rewind (gdb_lasterr
);
701 ui_file_put (stream
, do_write
, gdb_lasterr
);
703 /* Write the message plus any error_pre_print to gdb_stderr. */
704 target_terminal_ours ();
705 wrap_here (""); /* Force out any buffered output */
706 gdb_flush (gdb_stdout
);
707 annotate_error_begin ();
709 fputs_filtered (error_pre_print
, gdb_stderr
);
710 ui_file_put (stream
, do_write
, gdb_stderr
);
711 fprintf_filtered (gdb_stderr
, "\n");
713 throw_exception (reason
);
717 error_stream (struct ui_file
*stream
)
719 error_stream_1 (stream
, RETURN_ERROR
);
722 /* Get the last error message issued by gdb */
725 error_last_message (void)
728 return ui_file_xstrdup (gdb_lasterr
, &len
);
731 /* This is to be called by main() at the very beginning */
736 gdb_lasterr
= mem_fileopen ();
739 /* Print a message reporting an internal error/warning. Ask the user
740 if they want to continue, dump core, or just exit. Return
741 something to indicate a quit. */
743 struct internal_problem
746 /* FIXME: cagney/2002-08-15: There should be ``maint set/show''
747 commands available for controlling these variables. */
748 enum auto_boolean should_quit
;
749 enum auto_boolean should_dump_core
;
752 /* Report a problem, internal to GDB, to the user. Once the problem
753 has been reported, and assuming GDB didn't quit, the caller can
754 either allow execution to resume or throw an error. */
757 internal_vproblem (struct internal_problem
*problem
,
758 const char *file
, int line
, const char *fmt
, va_list ap
)
765 /* Don't allow infinite error/warning recursion. */
767 static char msg
[] = "Recursive internal problem.\n";
775 fputs_unfiltered (msg
, gdb_stderr
);
776 abort (); /* NOTE: GDB has only three calls to abort(). */
779 write (STDERR_FILENO
, msg
, sizeof (msg
));
784 /* Try to get the message out and at the start of a new line. */
785 target_terminal_ours ();
788 /* Create a string containing the full error/warning message. Need
789 to call query with this full string, as otherwize the reason
790 (error/warning) and question become separated. Format using a
791 style similar to a compiler error message. Include extra detail
792 so that the user knows that they are living on the edge. */
795 msg
= xstrvprintf (fmt
, ap
);
796 reason
= xstrprintf ("\
798 A problem internal to GDB has been detected,\n\
799 further debugging may prove unreliable.", file
, line
, problem
->name
, msg
);
801 make_cleanup (xfree
, reason
);
804 switch (problem
->should_quit
)
806 case AUTO_BOOLEAN_AUTO
:
807 /* Default (yes/batch case) is to quit GDB. When in batch mode
808 this lessens the likelhood of GDB going into an infinate
810 quit_p
= query ("%s\nQuit this debugging session? ", reason
);
812 case AUTO_BOOLEAN_TRUE
:
815 case AUTO_BOOLEAN_FALSE
:
819 internal_error (__FILE__
, __LINE__
, "bad switch");
822 switch (problem
->should_dump_core
)
824 case AUTO_BOOLEAN_AUTO
:
825 /* Default (yes/batch case) is to dump core. This leaves a GDB
826 `dropping' so that it is easier to see that something went
828 dump_core_p
= query ("%s\nCreate a core file of GDB? ", reason
);
831 case AUTO_BOOLEAN_TRUE
:
834 case AUTO_BOOLEAN_FALSE
:
838 internal_error (__FILE__
, __LINE__
, "bad switch");
844 abort (); /* NOTE: GDB has only three calls to abort(). */
853 abort (); /* NOTE: GDB has only three calls to abort(). */
860 static struct internal_problem internal_error_problem
= {
861 "internal-error", AUTO_BOOLEAN_AUTO
, AUTO_BOOLEAN_AUTO
865 internal_verror (const char *file
, int line
, const char *fmt
, va_list ap
)
867 internal_vproblem (&internal_error_problem
, file
, line
, fmt
, ap
);
868 throw_exception (RETURN_ERROR
);
872 internal_error (const char *file
, int line
, const char *string
, ...)
875 va_start (ap
, string
);
876 internal_verror (file
, line
, string
, ap
);
880 static struct internal_problem internal_warning_problem
= {
881 "internal-warning", AUTO_BOOLEAN_AUTO
, AUTO_BOOLEAN_AUTO
885 internal_vwarning (const char *file
, int line
, const char *fmt
, va_list ap
)
887 internal_vproblem (&internal_warning_problem
, file
, line
, fmt
, ap
);
891 internal_warning (const char *file
, int line
, const char *string
, ...)
894 va_start (ap
, string
);
895 internal_vwarning (file
, line
, string
, ap
);
899 /* The strerror() function can return NULL for errno values that are
900 out of range. Provide a "safe" version that always returns a
904 safe_strerror (int errnum
)
909 msg
= strerror (errnum
);
912 sprintf (buf
, "(undocumented errno %d)", errnum
);
918 /* Print the system error message for errno, and also mention STRING
919 as the file name for which the error was encountered.
920 Then return to command level. */
923 perror_with_name (const char *string
)
928 err
= safe_strerror (errno
);
929 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
930 strcpy (combined
, string
);
931 strcat (combined
, ": ");
932 strcat (combined
, err
);
934 /* I understand setting these is a matter of taste. Still, some people
935 may clear errno but not know about bfd_error. Doing this here is not
937 bfd_set_error (bfd_error_no_error
);
940 error ("%s.", combined
);
943 /* Print the system error message for ERRCODE, and also mention STRING
944 as the file name for which the error was encountered. */
947 print_sys_errmsg (const char *string
, int errcode
)
952 err
= safe_strerror (errcode
);
953 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
954 strcpy (combined
, string
);
955 strcat (combined
, ": ");
956 strcat (combined
, err
);
958 /* We want anything which was printed on stdout to come out first, before
960 gdb_flush (gdb_stdout
);
961 fprintf_unfiltered (gdb_stderr
, "%s.\n", combined
);
964 /* Control C eventually causes this to be called, at a convenient time. */
969 struct serial
*gdb_stdout_serial
= serial_fdopen (1);
971 target_terminal_ours ();
973 /* We want all output to appear now, before we print "Quit". We
974 have 3 levels of buffering we have to flush (it's possible that
975 some of these should be changed to flush the lower-level ones
978 /* 1. The _filtered buffer. */
979 wrap_here ((char *) 0);
981 /* 2. The stdio buffer. */
982 gdb_flush (gdb_stdout
);
983 gdb_flush (gdb_stderr
);
985 /* 3. The system-level buffer. */
986 serial_drain_output (gdb_stdout_serial
);
987 serial_un_fdopen (gdb_stdout_serial
);
989 annotate_error_begin ();
991 /* Don't use *_filtered; we don't want to prompt the user to continue. */
993 fputs_unfiltered (quit_pre_print
, gdb_stderr
);
996 /* No steenking SIGINT will ever be coming our way when the
997 program is resumed. Don't lie. */
998 fprintf_unfiltered (gdb_stderr
, "Quit\n");
1001 /* If there is no terminal switching for this target, then we can't
1002 possibly get screwed by the lack of job control. */
1003 || current_target
.to_terminal_ours
== NULL
)
1004 fprintf_unfiltered (gdb_stderr
, "Quit\n");
1006 fprintf_unfiltered (gdb_stderr
,
1007 "Quit (expect signal SIGINT when the program is resumed)\n");
1009 throw_exception (RETURN_QUIT
);
1012 /* Control C comes here */
1014 request_quit (int signo
)
1017 /* Restore the signal handler. Harmless with BSD-style signals,
1018 needed for System V-style signals. */
1019 signal (signo
, request_quit
);
1025 /* Called when a memory allocation fails, with the number of bytes of
1026 memory requested in SIZE. */
1033 internal_error (__FILE__
, __LINE__
,
1034 "virtual memory exhausted: can't allocate %ld bytes.",
1039 internal_error (__FILE__
, __LINE__
, "virtual memory exhausted.");
1043 /* The xmalloc() (libiberty.h) family of memory management routines.
1045 These are like the ISO-C malloc() family except that they implement
1046 consistent semantics and guard against typical memory management
1049 /* NOTE: These are declared using PTR to ensure consistency with
1050 "libiberty.h". xfree() is GDB local. */
1053 xmalloc (size_t size
)
1057 /* See libiberty/xmalloc.c. This function need's to match that's
1058 semantics. It never returns NULL. */
1062 val
= malloc (size
); /* OK: malloc */
1070 xrealloc (PTR ptr
, size_t size
) /* OK: PTR */
1074 /* See libiberty/xmalloc.c. This function need's to match that's
1075 semantics. It never returns NULL. */
1080 val
= realloc (ptr
, size
); /* OK: realloc */
1082 val
= malloc (size
); /* OK: malloc */
1090 xcalloc (size_t number
, size_t size
)
1094 /* See libiberty/xmalloc.c. This function need's to match that's
1095 semantics. It never returns NULL. */
1096 if (number
== 0 || size
== 0)
1102 mem
= calloc (number
, size
); /* OK: xcalloc */
1104 nomem (number
* size
);
1113 free (ptr
); /* OK: free */
1117 /* Like asprintf/vasprintf but get an internal_error if the call
1121 xstrprintf (const char *format
, ...)
1125 va_start (args
, format
);
1126 ret
= xstrvprintf (format
, args
);
1132 xasprintf (char **ret
, const char *format
, ...)
1135 va_start (args
, format
);
1136 (*ret
) = xstrvprintf (format
, args
);
1141 xvasprintf (char **ret
, const char *format
, va_list ap
)
1143 (*ret
) = xstrvprintf (format
, ap
);
1147 xstrvprintf (const char *format
, va_list ap
)
1150 int status
= vasprintf (&ret
, format
, ap
);
1151 /* NULL is returned when there was a memory allocation problem. */
1154 /* A negative status (the printed length) with a non-NULL buffer
1155 should never happen, but just to be sure. */
1157 internal_error (__FILE__
, __LINE__
,
1158 "vasprintf call failed (errno %d)", errno
);
1162 /* My replacement for the read system call.
1163 Used like `read' but keeps going if `read' returns too soon. */
1166 myread (int desc
, char *addr
, int len
)
1173 val
= read (desc
, addr
, len
);
1177 return orglen
- len
;
1184 /* Make a copy of the string at PTR with SIZE characters
1185 (and add a null character at the end in the copy).
1186 Uses malloc to get the space. Returns the address of the copy. */
1189 savestring (const char *ptr
, size_t size
)
1191 char *p
= (char *) xmalloc (size
+ 1);
1192 memcpy (p
, ptr
, size
);
1198 print_spaces (int n
, struct ui_file
*file
)
1200 fputs_unfiltered (n_spaces (n
), file
);
1203 /* Print a host address. */
1206 gdb_print_host_address (const void *addr
, struct ui_file
*stream
)
1209 /* We could use the %p conversion specifier to fprintf if we had any
1210 way of knowing whether this host supports it. But the following
1211 should work on the Alpha and on 32 bit machines. */
1213 fprintf_filtered (stream
, "0x%lx", (unsigned long) addr
);
1216 /* Ask user a y-or-n question and return 1 iff answer is yes.
1217 Takes three args which are given to printf to print the question.
1218 The first, a control string, should end in "? ".
1219 It should not say how to answer, because we do that. */
1223 query (const char *ctlstr
, ...)
1230 if (deprecated_query_hook
)
1232 va_start (args
, ctlstr
);
1233 return deprecated_query_hook (ctlstr
, args
);
1236 /* Automatically answer "yes" if input is not from a terminal. */
1237 if (!input_from_terminal_p ())
1242 wrap_here (""); /* Flush any buffered output */
1243 gdb_flush (gdb_stdout
);
1245 if (annotation_level
> 1)
1246 printf_filtered ("\n\032\032pre-query\n");
1248 va_start (args
, ctlstr
);
1249 vfprintf_filtered (gdb_stdout
, ctlstr
, args
);
1251 printf_filtered ("(y or n) ");
1253 if (annotation_level
> 1)
1254 printf_filtered ("\n\032\032query\n");
1257 gdb_flush (gdb_stdout
);
1259 answer
= fgetc (stdin
);
1260 clearerr (stdin
); /* in case of C-d */
1261 if (answer
== EOF
) /* C-d */
1266 /* Eat rest of input line, to EOF or newline */
1270 ans2
= fgetc (stdin
);
1273 while (ans2
!= EOF
&& ans2
!= '\n' && ans2
!= '\r');
1287 printf_filtered ("Please answer y or n.\n");
1290 if (annotation_level
> 1)
1291 printf_filtered ("\n\032\032post-query\n");
1296 /* This function supports the nquery() and yquery() functions.
1297 Ask user a y-or-n question and return 0 if answer is no, 1 if
1298 answer is yes, or default the answer to the specified default.
1299 DEFCHAR is either 'y' or 'n' and refers to the default answer.
1300 CTLSTR is the control string and should end in "? ". It should
1301 not say how to answer, because we do that.
1302 ARGS are the arguments passed along with the CTLSTR argument to
1306 defaulted_query (const char *ctlstr
, const char defchar
, va_list args
)
1312 char def_answer
, not_def_answer
;
1313 char *y_string
, *n_string
;
1315 /* Set up according to which answer is the default. */
1320 not_def_answer
= 'N';
1328 not_def_answer
= 'Y';
1333 if (deprecated_query_hook
)
1335 return deprecated_query_hook (ctlstr
, args
);
1338 /* Automatically answer default value if input is not from a terminal. */
1339 if (!input_from_terminal_p ())
1344 wrap_here (""); /* Flush any buffered output */
1345 gdb_flush (gdb_stdout
);
1347 if (annotation_level
> 1)
1348 printf_filtered ("\n\032\032pre-query\n");
1350 vfprintf_filtered (gdb_stdout
, ctlstr
, args
);
1351 printf_filtered ("(%s or %s) ", y_string
, n_string
);
1353 if (annotation_level
> 1)
1354 printf_filtered ("\n\032\032query\n");
1357 gdb_flush (gdb_stdout
);
1359 answer
= fgetc (stdin
);
1360 clearerr (stdin
); /* in case of C-d */
1361 if (answer
== EOF
) /* C-d */
1366 /* Eat rest of input line, to EOF or newline */
1370 ans2
= fgetc (stdin
);
1373 while (ans2
!= EOF
&& ans2
!= '\n' && ans2
!= '\r');
1377 /* Check answer. For the non-default, the user must specify
1378 the non-default explicitly. */
1379 if (answer
== not_def_answer
)
1381 retval
= !def_value
;
1384 /* Otherwise, for the default, the user may either specify
1385 the required input or have it default by entering nothing. */
1386 if (answer
== def_answer
|| answer
== '\n' ||
1387 answer
== '\r' || answer
== EOF
)
1392 /* Invalid entries are not defaulted and require another selection. */
1393 printf_filtered ("Please answer %s or %s.\n",
1394 y_string
, n_string
);
1397 if (annotation_level
> 1)
1398 printf_filtered ("\n\032\032post-query\n");
1403 /* Ask user a y-or-n question and return 0 if answer is no, 1 if
1404 answer is yes, or 0 if answer is defaulted.
1405 Takes three args which are given to printf to print the question.
1406 The first, a control string, should end in "? ".
1407 It should not say how to answer, because we do that. */
1410 nquery (const char *ctlstr
, ...)
1414 va_start (args
, ctlstr
);
1415 return defaulted_query (ctlstr
, 'n', args
);
1419 /* Ask user a y-or-n question and return 0 if answer is no, 1 if
1420 answer is yes, or 1 if answer is defaulted.
1421 Takes three args which are given to printf to print the question.
1422 The first, a control string, should end in "? ".
1423 It should not say how to answer, because we do that. */
1426 yquery (const char *ctlstr
, ...)
1430 va_start (args
, ctlstr
);
1431 return defaulted_query (ctlstr
, 'y', args
);
1435 /* Print an error message saying that we couldn't make sense of a
1436 \^mumble sequence in a string or character constant. START and END
1437 indicate a substring of some larger string that contains the
1438 erroneous backslash sequence, missing the initial backslash. */
1440 no_control_char_error (const char *start
, const char *end
)
1442 int len
= end
- start
;
1443 char *copy
= alloca (end
- start
+ 1);
1445 memcpy (copy
, start
, len
);
1448 error ("There is no control character `\\%s' in the `%s' character set.",
1449 copy
, target_charset ());
1452 /* Parse a C escape sequence. STRING_PTR points to a variable
1453 containing a pointer to the string to parse. That pointer
1454 should point to the character after the \. That pointer
1455 is updated past the characters we use. The value of the
1456 escape sequence is returned.
1458 A negative value means the sequence \ newline was seen,
1459 which is supposed to be equivalent to nothing at all.
1461 If \ is followed by a null character, we return a negative
1462 value and leave the string pointer pointing at the null character.
1464 If \ is followed by 000, we return 0 and leave the string pointer
1465 after the zeros. A value of 0 does not mean end of string. */
1468 parse_escape (char **string_ptr
)
1471 int c
= *(*string_ptr
)++;
1472 if (c_parse_backslash (c
, &target_char
))
1484 /* Remember where this escape sequence started, for reporting
1486 char *sequence_start_pos
= *string_ptr
- 1;
1488 c
= *(*string_ptr
)++;
1492 /* XXXCHARSET: What is `delete' in the host character set? */
1495 if (!host_char_to_target (c
, &target_char
))
1496 error ("There is no character corresponding to `Delete' "
1497 "in the target character set `%s'.", host_charset ());
1502 target_char
= parse_escape (string_ptr
);
1505 if (!host_char_to_target (c
, &target_char
))
1506 no_control_char_error (sequence_start_pos
, *string_ptr
);
1509 /* Now target_char is something like `c', and we want to find
1510 its control-character equivalent. */
1511 if (!target_char_to_control_char (target_char
, &target_char
))
1512 no_control_char_error (sequence_start_pos
, *string_ptr
);
1517 /* XXXCHARSET: we need to use isdigit and value-of-digit
1518 methods of the host character set here. */
1534 if (c
>= '0' && c
<= '7')
1548 if (!host_char_to_target (c
, &target_char
))
1550 ("The escape sequence `\%c' is equivalent to plain `%c', which"
1551 " has no equivalent\n" "in the `%s' character set.", c
, c
,
1557 /* Print the character C on STREAM as part of the contents of a literal
1558 string whose delimiter is QUOTER. Note that this routine should only
1559 be call for printing things which are independent of the language
1560 of the program being debugged. */
1563 printchar (int c
, void (*do_fputs
) (const char *, struct ui_file
*),
1564 void (*do_fprintf
) (struct ui_file
*, const char *, ...),
1565 struct ui_file
*stream
, int quoter
)
1568 c
&= 0xFF; /* Avoid sign bit follies */
1570 if (c
< 0x20 || /* Low control chars */
1571 (c
>= 0x7F && c
< 0xA0) || /* DEL, High controls */
1572 (sevenbit_strings
&& c
>= 0x80))
1573 { /* high order bit set */
1577 do_fputs ("\\n", stream
);
1580 do_fputs ("\\b", stream
);
1583 do_fputs ("\\t", stream
);
1586 do_fputs ("\\f", stream
);
1589 do_fputs ("\\r", stream
);
1592 do_fputs ("\\e", stream
);
1595 do_fputs ("\\a", stream
);
1598 do_fprintf (stream
, "\\%.3o", (unsigned int) c
);
1604 if (c
== '\\' || c
== quoter
)
1605 do_fputs ("\\", stream
);
1606 do_fprintf (stream
, "%c", c
);
1610 /* Print the character C on STREAM as part of the contents of a
1611 literal string whose delimiter is QUOTER. Note that these routines
1612 should only be call for printing things which are independent of
1613 the language of the program being debugged. */
1616 fputstr_filtered (const char *str
, int quoter
, struct ui_file
*stream
)
1619 printchar (*str
++, fputs_filtered
, fprintf_filtered
, stream
, quoter
);
1623 fputstr_unfiltered (const char *str
, int quoter
, struct ui_file
*stream
)
1626 printchar (*str
++, fputs_unfiltered
, fprintf_unfiltered
, stream
, quoter
);
1630 fputstrn_unfiltered (const char *str
, int n
, int quoter
,
1631 struct ui_file
*stream
)
1634 for (i
= 0; i
< n
; i
++)
1635 printchar (str
[i
], fputs_unfiltered
, fprintf_unfiltered
, stream
, quoter
);
1639 /* Number of lines per page or UINT_MAX if paging is disabled. */
1640 static unsigned int lines_per_page
;
1642 /* Number of chars per line or UINT_MAX if line folding is disabled. */
1643 static unsigned int chars_per_line
;
1645 /* Current count of lines printed on this page, chars on this line. */
1646 static unsigned int lines_printed
, chars_printed
;
1648 /* Buffer and start column of buffered text, for doing smarter word-
1649 wrapping. When someone calls wrap_here(), we start buffering output
1650 that comes through fputs_filtered(). If we see a newline, we just
1651 spit it out and forget about the wrap_here(). If we see another
1652 wrap_here(), we spit it out and remember the newer one. If we see
1653 the end of the line, we spit out a newline, the indent, and then
1654 the buffered output. */
1656 /* Malloc'd buffer with chars_per_line+2 bytes. Contains characters which
1657 are waiting to be output (they have already been counted in chars_printed).
1658 When wrap_buffer[0] is null, the buffer is empty. */
1659 static char *wrap_buffer
;
1661 /* Pointer in wrap_buffer to the next character to fill. */
1662 static char *wrap_pointer
;
1664 /* String to indent by if the wrap occurs. Must not be NULL if wrap_column
1666 static char *wrap_indent
;
1668 /* Column number on the screen where wrap_buffer begins, or 0 if wrapping
1669 is not in effect. */
1670 static int wrap_column
;
1673 /* Inialize the number of lines per page and chars per line. */
1676 init_page_info (void)
1679 if (!tui_get_command_dimension (&chars_per_line
, &lines_per_page
))
1684 #if defined(__GO32__)
1685 rows
= ScreenRows ();
1686 cols
= ScreenCols ();
1687 lines_per_page
= rows
;
1688 chars_per_line
= cols
;
1690 /* Make sure Readline has initialized its terminal settings. */
1691 rl_reset_terminal (NULL
);
1693 /* Get the screen size from Readline. */
1694 rl_get_screen_size (&rows
, &cols
);
1695 lines_per_page
= rows
;
1696 chars_per_line
= cols
;
1698 /* Readline should have fetched the termcap entry for us. */
1699 if (tgetnum ("li") < 0 || getenv ("EMACS"))
1701 /* The number of lines per page is not mentioned in the
1702 terminal description. This probably means that paging is
1703 not useful (e.g. emacs shell window), so disable paging. */
1704 lines_per_page
= UINT_MAX
;
1707 /* FIXME: Get rid of this junk. */
1708 #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER)
1709 SIGWINCH_HANDLER (SIGWINCH
);
1712 /* If the output is not a terminal, don't paginate it. */
1713 if (!ui_file_isatty (gdb_stdout
))
1714 lines_per_page
= UINT_MAX
;
1722 /* Set the screen size based on LINES_PER_PAGE and CHARS_PER_LINE. */
1725 set_screen_size (void)
1727 int rows
= lines_per_page
;
1728 int cols
= chars_per_line
;
1734 rl_get_screen_size (NULL
, &cols
);
1736 /* Update Readline's idea of the terminal size. */
1737 rl_set_screen_size (rows
, cols
);
1740 /* Reinitialize WRAP_BUFFER according to the current value of
1746 if (chars_per_line
== 0)
1751 wrap_buffer
= (char *) xmalloc (chars_per_line
+ 2);
1752 wrap_buffer
[0] = '\0';
1755 wrap_buffer
= (char *) xrealloc (wrap_buffer
, chars_per_line
+ 2);
1756 wrap_pointer
= wrap_buffer
; /* Start it at the beginning. */
1760 set_width_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
1767 set_height_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
1772 /* Wait, so the user can read what's on the screen. Prompt the user
1773 to continue by pressing RETURN. */
1776 prompt_for_continue (void)
1779 char cont_prompt
[120];
1781 if (annotation_level
> 1)
1782 printf_unfiltered ("\n\032\032pre-prompt-for-continue\n");
1784 strcpy (cont_prompt
,
1785 "---Type <return> to continue, or q <return> to quit---");
1786 if (annotation_level
> 1)
1787 strcat (cont_prompt
, "\n\032\032prompt-for-continue\n");
1789 /* We must do this *before* we call gdb_readline, else it will eventually
1790 call us -- thinking that we're trying to print beyond the end of the
1792 reinitialize_more_filter ();
1795 /* On a real operating system, the user can quit with SIGINT.
1798 'q' is provided on all systems so users don't have to change habits
1799 from system to system, and because telling them what to do in
1800 the prompt is more user-friendly than expecting them to think of
1802 /* Call readline, not gdb_readline, because GO32 readline handles control-C
1803 whereas control-C to gdb_readline will cause the user to get dumped
1805 ignore
= gdb_readline_wrapper (cont_prompt
);
1807 if (annotation_level
> 1)
1808 printf_unfiltered ("\n\032\032post-prompt-for-continue\n");
1813 while (*p
== ' ' || *p
== '\t')
1816 async_request_quit (0);
1821 /* Now we have to do this again, so that GDB will know that it doesn't
1822 need to save the ---Type <return>--- line at the top of the screen. */
1823 reinitialize_more_filter ();
1825 dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */
1828 /* Reinitialize filter; ie. tell it to reset to original values. */
1831 reinitialize_more_filter (void)
1837 /* Indicate that if the next sequence of characters overflows the line,
1838 a newline should be inserted here rather than when it hits the end.
1839 If INDENT is non-null, it is a string to be printed to indent the
1840 wrapped part on the next line. INDENT must remain accessible until
1841 the next call to wrap_here() or until a newline is printed through
1844 If the line is already overfull, we immediately print a newline and
1845 the indentation, and disable further wrapping.
1847 If we don't know the width of lines, but we know the page height,
1848 we must not wrap words, but should still keep track of newlines
1849 that were explicitly printed.
1851 INDENT should not contain tabs, as that will mess up the char count
1852 on the next line. FIXME.
1854 This routine is guaranteed to force out any output which has been
1855 squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be
1856 used to force out output from the wrap_buffer. */
1859 wrap_here (char *indent
)
1861 /* This should have been allocated, but be paranoid anyway. */
1863 internal_error (__FILE__
, __LINE__
, "failed internal consistency check");
1867 *wrap_pointer
= '\0';
1868 fputs_unfiltered (wrap_buffer
, gdb_stdout
);
1870 wrap_pointer
= wrap_buffer
;
1871 wrap_buffer
[0] = '\0';
1872 if (chars_per_line
== UINT_MAX
) /* No line overflow checking */
1876 else if (chars_printed
>= chars_per_line
)
1878 puts_filtered ("\n");
1880 puts_filtered (indent
);
1885 wrap_column
= chars_printed
;
1889 wrap_indent
= indent
;
1893 /* Print input string to gdb_stdout, filtered, with wrap,
1894 arranging strings in columns of n chars. String can be
1895 right or left justified in the column. Never prints
1896 trailing spaces. String should never be longer than
1897 width. FIXME: this could be useful for the EXAMINE
1898 command, which currently doesn't tabulate very well */
1901 puts_filtered_tabular (char *string
, int width
, int right
)
1907 gdb_assert (chars_per_line
> 0);
1908 if (chars_per_line
== UINT_MAX
)
1910 fputs_filtered (string
, gdb_stdout
);
1911 fputs_filtered ("\n", gdb_stdout
);
1915 if (((chars_printed
- 1) / width
+ 2) * width
>= chars_per_line
)
1916 fputs_filtered ("\n", gdb_stdout
);
1918 if (width
>= chars_per_line
)
1919 width
= chars_per_line
- 1;
1921 stringlen
= strlen (string
);
1923 if (chars_printed
> 0)
1924 spaces
= width
- (chars_printed
- 1) % width
- 1;
1926 spaces
+= width
- stringlen
;
1928 spacebuf
= alloca (spaces
+ 1);
1929 spacebuf
[spaces
] = '\0';
1931 spacebuf
[spaces
] = ' ';
1933 fputs_filtered (spacebuf
, gdb_stdout
);
1934 fputs_filtered (string
, gdb_stdout
);
1938 /* Ensure that whatever gets printed next, using the filtered output
1939 commands, starts at the beginning of the line. I.E. if there is
1940 any pending output for the current line, flush it and start a new
1941 line. Otherwise do nothing. */
1946 if (chars_printed
> 0)
1948 puts_filtered ("\n");
1953 /* Like fputs but if FILTER is true, pause after every screenful.
1955 Regardless of FILTER can wrap at points other than the final
1956 character of a line.
1958 Unlike fputs, fputs_maybe_filtered does not return a value.
1959 It is OK for LINEBUFFER to be NULL, in which case just don't print
1962 Note that a longjmp to top level may occur in this routine (only if
1963 FILTER is true) (since prompt_for_continue may do so) so this
1964 routine should not be called when cleanups are not in place. */
1967 fputs_maybe_filtered (const char *linebuffer
, struct ui_file
*stream
,
1970 const char *lineptr
;
1972 if (linebuffer
== 0)
1975 /* Don't do any filtering if it is disabled. */
1976 if ((stream
!= gdb_stdout
) || !pagination_enabled
1977 || (lines_per_page
== UINT_MAX
&& chars_per_line
== UINT_MAX
))
1979 fputs_unfiltered (linebuffer
, stream
);
1983 /* Go through and output each character. Show line extension
1984 when this is necessary; prompt user for new page when this is
1987 lineptr
= linebuffer
;
1990 /* Possible new page. */
1991 if (filter
&& (lines_printed
>= lines_per_page
- 1))
1992 prompt_for_continue ();
1994 while (*lineptr
&& *lineptr
!= '\n')
1996 /* Print a single line. */
1997 if (*lineptr
== '\t')
2000 *wrap_pointer
++ = '\t';
2002 fputc_unfiltered ('\t', stream
);
2003 /* Shifting right by 3 produces the number of tab stops
2004 we have already passed, and then adding one and
2005 shifting left 3 advances to the next tab stop. */
2006 chars_printed
= ((chars_printed
>> 3) + 1) << 3;
2012 *wrap_pointer
++ = *lineptr
;
2014 fputc_unfiltered (*lineptr
, stream
);
2019 if (chars_printed
>= chars_per_line
)
2021 unsigned int save_chars
= chars_printed
;
2025 /* If we aren't actually wrapping, don't output newline --
2026 if chars_per_line is right, we probably just overflowed
2027 anyway; if it's wrong, let us keep going. */
2029 fputc_unfiltered ('\n', stream
);
2031 /* Possible new page. */
2032 if (lines_printed
>= lines_per_page
- 1)
2033 prompt_for_continue ();
2035 /* Now output indentation and wrapped string */
2038 fputs_unfiltered (wrap_indent
, stream
);
2039 *wrap_pointer
= '\0'; /* Null-terminate saved stuff */
2040 fputs_unfiltered (wrap_buffer
, stream
); /* and eject it */
2041 /* FIXME, this strlen is what prevents wrap_indent from
2042 containing tabs. However, if we recurse to print it
2043 and count its chars, we risk trouble if wrap_indent is
2044 longer than (the user settable) chars_per_line.
2045 Note also that this can set chars_printed > chars_per_line
2046 if we are printing a long string. */
2047 chars_printed
= strlen (wrap_indent
)
2048 + (save_chars
- wrap_column
);
2049 wrap_pointer
= wrap_buffer
; /* Reset buffer */
2050 wrap_buffer
[0] = '\0';
2051 wrap_column
= 0; /* And disable fancy wrap */
2056 if (*lineptr
== '\n')
2059 wrap_here ((char *) 0); /* Spit out chars, cancel further wraps */
2061 fputc_unfiltered ('\n', stream
);
2068 fputs_filtered (const char *linebuffer
, struct ui_file
*stream
)
2070 fputs_maybe_filtered (linebuffer
, stream
, 1);
2074 putchar_unfiltered (int c
)
2077 ui_file_write (gdb_stdout
, &buf
, 1);
2081 /* Write character C to gdb_stdout using GDB's paging mechanism and return C.
2082 May return nonlocally. */
2085 putchar_filtered (int c
)
2087 return fputc_filtered (c
, gdb_stdout
);
2091 fputc_unfiltered (int c
, struct ui_file
*stream
)
2094 ui_file_write (stream
, &buf
, 1);
2099 fputc_filtered (int c
, struct ui_file
*stream
)
2105 fputs_filtered (buf
, stream
);
2109 /* puts_debug is like fputs_unfiltered, except it prints special
2110 characters in printable fashion. */
2113 puts_debug (char *prefix
, char *string
, char *suffix
)
2117 /* Print prefix and suffix after each line. */
2118 static int new_line
= 1;
2119 static int return_p
= 0;
2120 static char *prev_prefix
= "";
2121 static char *prev_suffix
= "";
2123 if (*string
== '\n')
2126 /* If the prefix is changing, print the previous suffix, a new line,
2127 and the new prefix. */
2128 if ((return_p
|| (strcmp (prev_prefix
, prefix
) != 0)) && !new_line
)
2130 fputs_unfiltered (prev_suffix
, gdb_stdlog
);
2131 fputs_unfiltered ("\n", gdb_stdlog
);
2132 fputs_unfiltered (prefix
, gdb_stdlog
);
2135 /* Print prefix if we printed a newline during the previous call. */
2139 fputs_unfiltered (prefix
, gdb_stdlog
);
2142 prev_prefix
= prefix
;
2143 prev_suffix
= suffix
;
2145 /* Output characters in a printable format. */
2146 while ((ch
= *string
++) != '\0')
2152 fputc_unfiltered (ch
, gdb_stdlog
);
2155 fprintf_unfiltered (gdb_stdlog
, "\\x%02x", ch
& 0xff);
2159 fputs_unfiltered ("\\\\", gdb_stdlog
);
2162 fputs_unfiltered ("\\b", gdb_stdlog
);
2165 fputs_unfiltered ("\\f", gdb_stdlog
);
2169 fputs_unfiltered ("\\n", gdb_stdlog
);
2172 fputs_unfiltered ("\\r", gdb_stdlog
);
2175 fputs_unfiltered ("\\t", gdb_stdlog
);
2178 fputs_unfiltered ("\\v", gdb_stdlog
);
2182 return_p
= ch
== '\r';
2185 /* Print suffix if we printed a newline. */
2188 fputs_unfiltered (suffix
, gdb_stdlog
);
2189 fputs_unfiltered ("\n", gdb_stdlog
);
2194 /* Print a variable number of ARGS using format FORMAT. If this
2195 information is going to put the amount written (since the last call
2196 to REINITIALIZE_MORE_FILTER or the last page break) over the page size,
2197 call prompt_for_continue to get the users permision to continue.
2199 Unlike fprintf, this function does not return a value.
2201 We implement three variants, vfprintf (takes a vararg list and stream),
2202 fprintf (takes a stream to write on), and printf (the usual).
2204 Note also that a longjmp to top level may occur in this routine
2205 (since prompt_for_continue may do so) so this routine should not be
2206 called when cleanups are not in place. */
2209 vfprintf_maybe_filtered (struct ui_file
*stream
, const char *format
,
2210 va_list args
, int filter
)
2213 struct cleanup
*old_cleanups
;
2215 linebuffer
= xstrvprintf (format
, args
);
2216 old_cleanups
= make_cleanup (xfree
, linebuffer
);
2217 fputs_maybe_filtered (linebuffer
, stream
, filter
);
2218 do_cleanups (old_cleanups
);
2223 vfprintf_filtered (struct ui_file
*stream
, const char *format
, va_list args
)
2225 vfprintf_maybe_filtered (stream
, format
, args
, 1);
2229 vfprintf_unfiltered (struct ui_file
*stream
, const char *format
, va_list args
)
2232 struct cleanup
*old_cleanups
;
2234 linebuffer
= xstrvprintf (format
, args
);
2235 old_cleanups
= make_cleanup (xfree
, linebuffer
);
2236 fputs_unfiltered (linebuffer
, stream
);
2237 do_cleanups (old_cleanups
);
2241 vprintf_filtered (const char *format
, va_list args
)
2243 vfprintf_maybe_filtered (gdb_stdout
, format
, args
, 1);
2247 vprintf_unfiltered (const char *format
, va_list args
)
2249 vfprintf_unfiltered (gdb_stdout
, format
, args
);
2253 fprintf_filtered (struct ui_file
*stream
, const char *format
, ...)
2256 va_start (args
, format
);
2257 vfprintf_filtered (stream
, format
, args
);
2262 fprintf_unfiltered (struct ui_file
*stream
, const char *format
, ...)
2265 va_start (args
, format
);
2266 vfprintf_unfiltered (stream
, format
, args
);
2270 /* Like fprintf_filtered, but prints its result indented.
2271 Called as fprintfi_filtered (spaces, stream, format, ...); */
2274 fprintfi_filtered (int spaces
, struct ui_file
*stream
, const char *format
,
2278 va_start (args
, format
);
2279 print_spaces_filtered (spaces
, stream
);
2281 vfprintf_filtered (stream
, format
, args
);
2287 printf_filtered (const char *format
, ...)
2290 va_start (args
, format
);
2291 vfprintf_filtered (gdb_stdout
, format
, args
);
2297 printf_unfiltered (const char *format
, ...)
2300 va_start (args
, format
);
2301 vfprintf_unfiltered (gdb_stdout
, format
, args
);
2305 /* Like printf_filtered, but prints it's result indented.
2306 Called as printfi_filtered (spaces, format, ...); */
2309 printfi_filtered (int spaces
, const char *format
, ...)
2312 va_start (args
, format
);
2313 print_spaces_filtered (spaces
, gdb_stdout
);
2314 vfprintf_filtered (gdb_stdout
, format
, args
);
2318 /* Easy -- but watch out!
2320 This routine is *not* a replacement for puts()! puts() appends a newline.
2321 This one doesn't, and had better not! */
2324 puts_filtered (const char *string
)
2326 fputs_filtered (string
, gdb_stdout
);
2330 puts_unfiltered (const char *string
)
2332 fputs_unfiltered (string
, gdb_stdout
);
2335 /* Return a pointer to N spaces and a null. The pointer is good
2336 until the next call to here. */
2341 static char *spaces
= 0;
2342 static int max_spaces
= -1;
2348 spaces
= (char *) xmalloc (n
+ 1);
2349 for (t
= spaces
+ n
; t
!= spaces
;)
2355 return spaces
+ max_spaces
- n
;
2358 /* Print N spaces. */
2360 print_spaces_filtered (int n
, struct ui_file
*stream
)
2362 fputs_filtered (n_spaces (n
), stream
);
2365 /* C++/ObjC demangler stuff. */
2367 /* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language
2368 LANG, using demangling args ARG_MODE, and print it filtered to STREAM.
2369 If the name is not mangled, or the language for the name is unknown, or
2370 demangling is off, the name is printed in its "raw" form. */
2373 fprintf_symbol_filtered (struct ui_file
*stream
, char *name
,
2374 enum language lang
, int arg_mode
)
2380 /* If user wants to see raw output, no problem. */
2383 fputs_filtered (name
, stream
);
2387 demangled
= language_demangle (language_def (lang
), name
, arg_mode
);
2388 fputs_filtered (demangled
? demangled
: name
, stream
);
2389 if (demangled
!= NULL
)
2397 /* Do a strcmp() type operation on STRING1 and STRING2, ignoring any
2398 differences in whitespace. Returns 0 if they match, non-zero if they
2399 don't (slightly different than strcmp()'s range of return values).
2401 As an extra hack, string1=="FOO(ARGS)" matches string2=="FOO".
2402 This "feature" is useful when searching for matching C++ function names
2403 (such as if the user types 'break FOO', where FOO is a mangled C++
2407 strcmp_iw (const char *string1
, const char *string2
)
2409 while ((*string1
!= '\0') && (*string2
!= '\0'))
2411 while (isspace (*string1
))
2415 while (isspace (*string2
))
2419 if (*string1
!= *string2
)
2423 if (*string1
!= '\0')
2429 return (*string1
!= '\0' && *string1
!= '(') || (*string2
!= '\0');
2432 /* This is like strcmp except that it ignores whitespace and treats
2433 '(' as the first non-NULL character in terms of ordering. Like
2434 strcmp (and unlike strcmp_iw), it returns negative if STRING1 <
2435 STRING2, 0 if STRING2 = STRING2, and positive if STRING1 > STRING2
2436 according to that ordering.
2438 If a list is sorted according to this function and if you want to
2439 find names in the list that match some fixed NAME according to
2440 strcmp_iw(LIST_ELT, NAME), then the place to start looking is right
2441 where this function would put NAME.
2443 Here are some examples of why using strcmp to sort is a bad idea:
2447 Say your partial symtab contains: "foo<char *>", "goo". Then, if
2448 we try to do a search for "foo<char*>", strcmp will locate this
2449 after "foo<char *>" and before "goo". Then lookup_partial_symbol
2450 will start looking at strings beginning with "goo", and will never
2451 see the correct match of "foo<char *>".
2453 Parenthesis example:
2455 In practice, this is less like to be an issue, but I'll give it a
2456 shot. Let's assume that '$' is a legitimate character to occur in
2457 symbols. (Which may well even be the case on some systems.) Then
2458 say that the partial symbol table contains "foo$" and "foo(int)".
2459 strcmp will put them in this order, since '$' < '('. Now, if the
2460 user searches for "foo", then strcmp will sort "foo" before "foo$".
2461 Then lookup_partial_symbol will notice that strcmp_iw("foo$",
2462 "foo") is false, so it won't proceed to the actual match of
2463 "foo(int)" with "foo". */
2466 strcmp_iw_ordered (const char *string1
, const char *string2
)
2468 while ((*string1
!= '\0') && (*string2
!= '\0'))
2470 while (isspace (*string1
))
2474 while (isspace (*string2
))
2478 if (*string1
!= *string2
)
2482 if (*string1
!= '\0')
2491 /* Characters are non-equal unless they're both '\0'; we want to
2492 make sure we get the comparison right according to our
2493 comparison in the cases where one of them is '\0' or '('. */
2495 if (*string2
== '\0')
2500 if (*string2
== '\0')
2505 if (*string2
== '(')
2508 return *string1
- *string2
;
2512 /* A simple comparison function with opposite semantics to strcmp. */
2515 streq (const char *lhs
, const char *rhs
)
2517 return !strcmp (lhs
, rhs
);
2523 ** Answer whether string_to_compare is a full or partial match to
2524 ** template_string. The partial match must be in sequence starting
2528 subset_compare (char *string_to_compare
, char *template_string
)
2531 if (template_string
!= (char *) NULL
&& string_to_compare
!= (char *) NULL
2532 && strlen (string_to_compare
) <= strlen (template_string
))
2535 (template_string
, string_to_compare
, strlen (string_to_compare
)) == 0);
2542 static void pagination_on_command (char *arg
, int from_tty
);
2544 pagination_on_command (char *arg
, int from_tty
)
2546 pagination_enabled
= 1;
2549 static void pagination_on_command (char *arg
, int from_tty
);
2551 pagination_off_command (char *arg
, int from_tty
)
2553 pagination_enabled
= 0;
2558 initialize_utils (void)
2560 struct cmd_list_element
*c
;
2562 c
= add_set_cmd ("width", class_support
, var_uinteger
, &chars_per_line
,
2563 "Set number of characters gdb thinks are in a line.",
2565 deprecated_add_show_from_set (c
, &showlist
);
2566 set_cmd_sfunc (c
, set_width_command
);
2568 c
= add_set_cmd ("height", class_support
, var_uinteger
, &lines_per_page
,
2569 "Set number of lines gdb thinks are in a page.", &setlist
);
2570 deprecated_add_show_from_set (c
, &showlist
);
2571 set_cmd_sfunc (c
, set_height_command
);
2575 deprecated_add_show_from_set
2576 (add_set_cmd ("demangle", class_support
, var_boolean
,
2578 "Set demangling of encoded C++/ObjC names when displaying symbols.",
2579 &setprintlist
), &showprintlist
);
2581 deprecated_add_show_from_set
2582 (add_set_cmd ("pagination", class_support
,
2583 var_boolean
, (char *) &pagination_enabled
,
2584 "Set state of pagination.", &setlist
), &showlist
);
2588 add_com ("am", class_support
, pagination_on_command
,
2589 "Enable pagination");
2590 add_com ("sm", class_support
, pagination_off_command
,
2591 "Disable pagination");
2594 deprecated_add_show_from_set
2595 (add_set_cmd ("sevenbit-strings", class_support
, var_boolean
,
2596 (char *) &sevenbit_strings
,
2597 "Set printing of 8-bit characters in strings as \\nnn.",
2598 &setprintlist
), &showprintlist
);
2600 deprecated_add_show_from_set
2601 (add_set_cmd ("asm-demangle", class_support
, var_boolean
,
2602 (char *) &asm_demangle
,
2603 "Set demangling of C++/ObjC names in disassembly listings.",
2604 &setprintlist
), &showprintlist
);
2607 /* Machine specific function to handle SIGWINCH signal. */
2609 #ifdef SIGWINCH_HANDLER_BODY
2610 SIGWINCH_HANDLER_BODY
2612 /* print routines to handle variable size regs, etc. */
2613 /* temporary storage using circular buffer */
2619 static char buf
[NUMCELLS
][CELLSIZE
];
2620 static int cell
= 0;
2621 if (++cell
>= NUMCELLS
)
2629 return (TARGET_ADDR_BIT
/ 8 * 2);
2633 paddr (CORE_ADDR addr
)
2635 return phex (addr
, TARGET_ADDR_BIT
/ 8);
2639 paddr_nz (CORE_ADDR addr
)
2641 return phex_nz (addr
, TARGET_ADDR_BIT
/ 8);
2645 decimal2str (char *paddr_str
, char *sign
, ULONGEST addr
, int width
)
2647 /* steal code from valprint.c:print_decimal(). Should this worry
2648 about the real size of addr as the above does? */
2649 unsigned long temp
[3];
2653 temp
[i
] = addr
% (1000 * 1000 * 1000);
2654 addr
/= (1000 * 1000 * 1000);
2658 while (addr
!= 0 && i
< (sizeof (temp
) / sizeof (temp
[0])));
2665 sprintf (paddr_str
, "%s%0*lu", sign
, width
, temp
[0]);
2668 sprintf (paddr_str
, "%s%0*lu%09lu", sign
, width
, temp
[1], temp
[0]);
2671 sprintf (paddr_str
, "%s%0*lu%09lu%09lu", sign
, width
,
2672 temp
[2], temp
[1], temp
[0]);
2675 internal_error (__FILE__
, __LINE__
,
2676 "failed internal consistency check");
2681 octal2str (char *paddr_str
, ULONGEST addr
, int width
)
2683 unsigned long temp
[3];
2687 temp
[i
] = addr
% (0100000 * 0100000);
2688 addr
/= (0100000 * 0100000);
2692 while (addr
!= 0 && i
< (sizeof (temp
) / sizeof (temp
[0])));
2700 sprintf (paddr_str
, "%*o", width
, 0);
2702 sprintf (paddr_str
, "0%0*lo", width
, temp
[0]);
2705 sprintf (paddr_str
, "0%0*lo%010lo", width
, temp
[1], temp
[0]);
2708 sprintf (paddr_str
, "0%0*lo%010lo%010lo", width
,
2709 temp
[2], temp
[1], temp
[0]);
2712 internal_error (__FILE__
, __LINE__
,
2713 "failed internal consistency check");
2718 paddr_u (CORE_ADDR addr
)
2720 char *paddr_str
= get_cell ();
2721 decimal2str (paddr_str
, "", addr
, 0);
2726 paddr_d (LONGEST addr
)
2728 char *paddr_str
= get_cell ();
2730 decimal2str (paddr_str
, "-", -addr
, 0);
2732 decimal2str (paddr_str
, "", addr
, 0);
2736 /* eliminate warning from compiler on 32-bit systems */
2737 static int thirty_two
= 32;
2740 phex (ULONGEST l
, int sizeof_l
)
2747 sprintf (str
, "%08lx%08lx",
2748 (unsigned long) (l
>> thirty_two
),
2749 (unsigned long) (l
& 0xffffffff));
2753 sprintf (str
, "%08lx", (unsigned long) l
);
2757 sprintf (str
, "%04x", (unsigned short) (l
& 0xffff));
2760 str
= phex (l
, sizeof (l
));
2767 phex_nz (ULONGEST l
, int sizeof_l
)
2774 unsigned long high
= (unsigned long) (l
>> thirty_two
);
2777 sprintf (str
, "%lx", (unsigned long) (l
& 0xffffffff));
2779 sprintf (str
, "%lx%08lx", high
, (unsigned long) (l
& 0xffffffff));
2784 sprintf (str
, "%lx", (unsigned long) l
);
2788 sprintf (str
, "%x", (unsigned short) (l
& 0xffff));
2791 str
= phex_nz (l
, sizeof (l
));
2797 /* Converts a LONGEST to a C-format hexadecimal literal and stores it
2798 in a static string. Returns a pointer to this string. */
2800 hex_string (LONGEST num
)
2802 char *result
= get_cell ();
2803 snprintf (result
, CELLSIZE
, "0x%s", phex_nz (num
, sizeof (num
)));
2807 /* Converts a LONGEST number to a C-format hexadecimal literal and
2808 stores it in a static string. Returns a pointer to this string
2809 that is valid until the next call. The number is padded on the
2810 left with 0s to at least WIDTH characters. */
2812 hex_string_custom (LONGEST num
, int width
)
2814 char *result
= get_cell ();
2815 char *result_end
= result
+ CELLSIZE
- 1;
2816 const char *hex
= phex_nz (num
, sizeof (num
));
2817 int hex_len
= strlen (hex
);
2819 if (hex_len
> width
)
2821 if (width
+ 2 >= CELLSIZE
)
2822 internal_error (__FILE__
, __LINE__
,
2823 "hex_string_custom: insufficient space to store result");
2825 strcpy (result_end
- width
- 2, "0x");
2826 memset (result_end
- width
, '0', width
);
2827 strcpy (result_end
- hex_len
, hex
);
2828 return result_end
- width
- 2;
2831 /* Convert VAL to a numeral in the given radix. For
2832 * radix 10, IS_SIGNED may be true, indicating a signed quantity;
2833 * otherwise VAL is interpreted as unsigned. If WIDTH is supplied,
2834 * it is the minimum width (0-padded if needed). USE_C_FORMAT means
2835 * to use C format in all cases. If it is false, then 'x'
2836 * and 'o' formats do not include a prefix (0x or leading 0). */
2839 int_string (LONGEST val
, int radix
, int is_signed
, int width
,
2848 result
= hex_string (val
);
2850 result
= hex_string_custom (val
, width
);
2857 char *result
= get_cell ();
2858 if (is_signed
&& val
< 0)
2859 decimal2str (result
, "-", -val
, width
);
2861 decimal2str (result
, "", val
, width
);
2866 char *result
= get_cell ();
2867 octal2str (result
, val
, width
);
2868 if (use_c_format
|| val
== 0)
2874 internal_error (__FILE__
, __LINE__
,
2875 "failed internal consistency check");
2879 /* Convert a CORE_ADDR into a string. */
2881 core_addr_to_string (const CORE_ADDR addr
)
2883 char *str
= get_cell ();
2885 strcat (str
, phex (addr
, sizeof (addr
)));
2890 core_addr_to_string_nz (const CORE_ADDR addr
)
2892 char *str
= get_cell ();
2894 strcat (str
, phex_nz (addr
, sizeof (addr
)));
2898 /* Convert a string back into a CORE_ADDR. */
2900 string_to_core_addr (const char *my_string
)
2903 if (my_string
[0] == '0' && tolower (my_string
[1]) == 'x')
2905 /* Assume that it is in decimal. */
2907 for (i
= 2; my_string
[i
] != '\0'; i
++)
2909 if (isdigit (my_string
[i
]))
2910 addr
= (my_string
[i
] - '0') + (addr
* 16);
2911 else if (isxdigit (my_string
[i
]))
2912 addr
= (tolower (my_string
[i
]) - 'a' + 0xa) + (addr
* 16);
2914 internal_error (__FILE__
, __LINE__
, "invalid hex");
2919 /* Assume that it is in decimal. */
2921 for (i
= 0; my_string
[i
] != '\0'; i
++)
2923 if (isdigit (my_string
[i
]))
2924 addr
= (my_string
[i
] - '0') + (addr
* 10);
2926 internal_error (__FILE__
, __LINE__
, "invalid decimal");
2933 gdb_realpath (const char *filename
)
2935 /* Method 1: The system has a compile time upper bound on a filename
2936 path. Use that and realpath() to canonicalize the name. This is
2937 the most common case. Note that, if there isn't a compile time
2938 upper bound, you want to avoid realpath() at all costs. */
2939 #if defined(HAVE_REALPATH)
2941 # if defined (PATH_MAX)
2943 # define USE_REALPATH
2944 # elif defined (MAXPATHLEN)
2945 char buf
[MAXPATHLEN
];
2946 # define USE_REALPATH
2948 # if defined (USE_REALPATH)
2949 const char *rp
= realpath (filename
, buf
);
2952 return xstrdup (rp
);
2955 #endif /* HAVE_REALPATH */
2957 /* Method 2: The host system (i.e., GNU) has the function
2958 canonicalize_file_name() which malloc's a chunk of memory and
2959 returns that, use that. */
2960 #if defined(HAVE_CANONICALIZE_FILE_NAME)
2962 char *rp
= canonicalize_file_name (filename
);
2964 return xstrdup (filename
);
2970 /* FIXME: cagney/2002-11-13:
2972 Method 2a: Use realpath() with a NULL buffer. Some systems, due
2973 to the problems described in in method 3, have modified their
2974 realpath() implementation so that it will allocate a buffer when
2975 NULL is passed in. Before this can be used, though, some sort of
2976 configure time test would need to be added. Otherwize the code
2977 will likely core dump. */
2979 /* Method 3: Now we're getting desperate! The system doesn't have a
2980 compile time buffer size and no alternative function. Query the
2981 OS, using pathconf(), for the buffer limit. Care is needed
2982 though, some systems do not limit PATH_MAX (return -1 for
2983 pathconf()) making it impossible to pass a correctly sized buffer
2984 to realpath() (it could always overflow). On those systems, we
2986 #if defined (HAVE_REALPATH) && defined (HAVE_UNISTD_H) && defined(HAVE_ALLOCA)
2988 /* Find out the max path size. */
2989 long path_max
= pathconf ("/", _PC_PATH_MAX
);
2992 /* PATH_MAX is bounded. */
2993 char *buf
= alloca (path_max
);
2994 char *rp
= realpath (filename
, buf
);
2995 return xstrdup (rp
? rp
: filename
);
3000 /* This system is a lost cause, just dup the buffer. */
3001 return xstrdup (filename
);
3004 /* Return a copy of FILENAME, with its directory prefix canonicalized
3008 xfullpath (const char *filename
)
3010 const char *base_name
= lbasename (filename
);
3015 /* Extract the basename of filename, and return immediately
3016 a copy of filename if it does not contain any directory prefix. */
3017 if (base_name
== filename
)
3018 return xstrdup (filename
);
3020 dir_name
= alloca ((size_t) (base_name
- filename
+ 2));
3021 /* Allocate enough space to store the dir_name + plus one extra
3022 character sometimes needed under Windows (see below), and
3023 then the closing \000 character */
3024 strncpy (dir_name
, filename
, base_name
- filename
);
3025 dir_name
[base_name
- filename
] = '\000';
3027 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
3028 /* We need to be careful when filename is of the form 'd:foo', which
3029 is equivalent of d:./foo, which is totally different from d:/foo. */
3030 if (strlen (dir_name
) == 2 && isalpha (dir_name
[0]) && dir_name
[1] == ':')
3033 dir_name
[3] = '\000';
3037 /* Canonicalize the directory prefix, and build the resulting
3038 filename. If the dirname realpath already contains an ending
3039 directory separator, avoid doubling it. */
3040 real_path
= gdb_realpath (dir_name
);
3041 if (IS_DIR_SEPARATOR (real_path
[strlen (real_path
) - 1]))
3042 result
= concat (real_path
, base_name
, NULL
);
3044 result
= concat (real_path
, SLASH_STRING
, base_name
, NULL
);
3051 /* This is the 32-bit CRC function used by the GNU separate debug
3052 facility. An executable may contain a section named
3053 .gnu_debuglink, which holds the name of a separate executable file
3054 containing its debug info, and a checksum of that file's contents,
3055 computed using this function. */
3057 gnu_debuglink_crc32 (unsigned long crc
, unsigned char *buf
, size_t len
)
3059 static const unsigned long crc32_table
[256] = {
3060 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419,
3061 0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4,
3062 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07,
3063 0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,
3064 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856,
3065 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
3066 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4,
3067 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
3068 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3,
3069 0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a,
3070 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599,
3071 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
3072 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190,
3073 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f,
3074 0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e,
3075 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
3076 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed,
3077 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
3078 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3,
3079 0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2,
3080 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a,
3081 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5,
3082 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010,
3083 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
3084 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17,
3085 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6,
3086 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615,
3087 0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,
3088 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344,
3089 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
3090 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a,
3091 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
3092 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1,
3093 0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c,
3094 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef,
3095 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
3096 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe,
3097 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31,
3098 0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c,
3099 0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
3100 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b,
3101 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
3102 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1,
3103 0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,
3104 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278,
3105 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7,
3106 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66,
3107 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
3108 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605,
3109 0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8,
3110 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b,
3115 crc
= ~crc
& 0xffffffff;
3116 for (end
= buf
+ len
; buf
< end
; ++buf
)
3117 crc
= crc32_table
[(crc
^ *buf
) & 0xff] ^ (crc
>> 8);
3118 return ~crc
& 0xffffffff;;
3122 align_up (ULONGEST v
, int n
)
3124 /* Check that N is really a power of two. */
3125 gdb_assert (n
&& (n
& (n
-1)) == 0);
3126 return (v
+ n
- 1) & -n
;
3130 align_down (ULONGEST v
, int n
)
3132 /* Check that N is really a power of two. */
3133 gdb_assert (n
&& (n
& (n
-1)) == 0);