1 /* General utility routines for GDB, the GNU debugger.
3 Copyright (C) 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
4 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
5 Free Software Foundation, Inc.
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 3 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, see <http://www.gnu.org/licenses/>. */
23 #include "gdb_assert.h"
25 #include "gdb_string.h"
26 #include "event-top.h"
27 #include "exceptions.h"
28 #include "gdbthread.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"
55 #include "gdb_obstack.h"
59 #include "inferior.h" /* for signed_pointer_to_address */
61 #include <sys/param.h> /* For MAXPATHLEN */
63 #include "gdb_curses.h"
65 #include "readline/readline.h"
71 extern PTR
malloc (); /* OK: PTR */
73 #if !HAVE_DECL_REALLOC
74 extern PTR
realloc (); /* OK: PTR */
80 /* readline defines this. */
83 void (*deprecated_error_begin_hook
) (void);
85 /* Prototypes for local functions */
87 static void vfprintf_maybe_filtered (struct ui_file
*, const char *,
88 va_list, int) ATTR_FORMAT (printf
, 2, 0);
90 static void fputs_maybe_filtered (const char *, struct ui_file
*, int);
92 static void do_my_cleanups (struct cleanup
**, struct cleanup
*);
94 static void prompt_for_continue (void);
96 static void set_screen_size (void);
97 static void set_width (void);
99 /* A flag indicating whether to timestamp debugging messages. */
101 static int debug_timestamp
= 0;
103 /* Chain of cleanup actions established with make_cleanup,
104 to be executed if an error happens. */
106 static struct cleanup
*cleanup_chain
; /* cleaned up after a failed command */
107 static struct cleanup
*final_cleanup_chain
; /* cleaned up when gdb exits */
109 /* Nonzero if we have job control. */
113 /* Nonzero means a quit has been requested. */
117 /* Nonzero means quit immediately if Control-C is typed now, rather
118 than waiting until QUIT is executed. Be careful in setting this;
119 code which executes with immediate_quit set has to be very careful
120 about being able to deal with being interrupted at any time. It is
121 almost always better to use QUIT; the only exception I can think of
122 is being able to quit out of a system call (using EINTR loses if
123 the SIGINT happens between the previous QUIT and the system call).
124 To immediately quit in the case in which a SIGINT happens between
125 the previous QUIT and setting immediate_quit (desirable anytime we
126 expect to block), call QUIT after setting immediate_quit. */
130 /* Nonzero means that encoded C++/ObjC names should be printed out in their
131 C++/ObjC form rather than raw. */
135 show_demangle (struct ui_file
*file
, int from_tty
,
136 struct cmd_list_element
*c
, const char *value
)
138 fprintf_filtered (file
, _("\
139 Demangling of encoded C++/ObjC names when displaying symbols is %s.\n"),
143 /* Nonzero means that encoded C++/ObjC names should be printed out in their
144 C++/ObjC form even in assembler language displays. If this is set, but
145 DEMANGLE is zero, names are printed raw, i.e. DEMANGLE controls. */
147 int asm_demangle
= 0;
149 show_asm_demangle (struct ui_file
*file
, int from_tty
,
150 struct cmd_list_element
*c
, const char *value
)
152 fprintf_filtered (file
, _("\
153 Demangling of C++/ObjC names in disassembly listings is %s.\n"),
157 /* Nonzero means that strings with character values >0x7F should be printed
158 as octal escapes. Zero means just print the value (e.g. it's an
159 international character, and the terminal or window can cope.) */
161 int sevenbit_strings
= 0;
163 show_sevenbit_strings (struct ui_file
*file
, int from_tty
,
164 struct cmd_list_element
*c
, const char *value
)
166 fprintf_filtered (file
, _("\
167 Printing of 8-bit characters in strings as \\nnn is %s.\n"),
171 /* String to be printed before error messages, if any. */
173 char *error_pre_print
;
175 /* String to be printed before quit messages, if any. */
177 char *quit_pre_print
;
179 /* String to be printed before warning messages, if any. */
181 char *warning_pre_print
= "\nwarning: ";
183 int pagination_enabled
= 1;
185 show_pagination_enabled (struct ui_file
*file
, int from_tty
,
186 struct cmd_list_element
*c
, const char *value
)
188 fprintf_filtered (file
, _("State of pagination is %s.\n"), value
);
193 /* Add a new cleanup to the cleanup_chain,
194 and return the previous chain pointer
195 to be passed later to do_cleanups or discard_cleanups.
196 Args are FUNCTION to clean up with, and ARG to pass to it. */
199 make_cleanup (make_cleanup_ftype
*function
, void *arg
)
201 return make_my_cleanup (&cleanup_chain
, function
, arg
);
205 make_cleanup_dtor (make_cleanup_ftype
*function
, void *arg
,
206 void (*dtor
) (void *))
208 return make_my_cleanup2 (&cleanup_chain
,
209 function
, arg
, dtor
);
213 make_final_cleanup (make_cleanup_ftype
*function
, void *arg
)
215 return make_my_cleanup (&final_cleanup_chain
, function
, arg
);
219 do_freeargv (void *arg
)
221 freeargv ((char **) arg
);
225 make_cleanup_freeargv (char **arg
)
227 return make_my_cleanup (&cleanup_chain
, do_freeargv
, arg
);
231 do_bfd_close_cleanup (void *arg
)
237 make_cleanup_bfd_close (bfd
*abfd
)
239 return make_cleanup (do_bfd_close_cleanup
, abfd
);
243 do_close_cleanup (void *arg
)
251 make_cleanup_close (int fd
)
253 int *saved_fd
= xmalloc (sizeof (fd
));
255 return make_cleanup (do_close_cleanup
, saved_fd
);
259 do_ui_file_delete (void *arg
)
261 ui_file_delete (arg
);
265 make_cleanup_ui_file_delete (struct ui_file
*arg
)
267 return make_my_cleanup (&cleanup_chain
, do_ui_file_delete
, arg
);
271 do_free_section_addr_info (void *arg
)
273 free_section_addr_info (arg
);
277 make_cleanup_free_section_addr_info (struct section_addr_info
*addrs
)
279 return make_my_cleanup (&cleanup_chain
, do_free_section_addr_info
, addrs
);
282 struct restore_integer_closure
289 restore_integer (void *p
)
291 struct restore_integer_closure
*closure
= p
;
292 *(closure
->variable
) = closure
->value
;
295 /* Remember the current value of *VARIABLE and make it restored when the cleanup
298 make_cleanup_restore_integer (int *variable
)
300 struct restore_integer_closure
*c
=
301 xmalloc (sizeof (struct restore_integer_closure
));
302 c
->variable
= variable
;
303 c
->value
= *variable
;
305 return make_my_cleanup2 (&cleanup_chain
, restore_integer
, (void *)c
,
310 make_my_cleanup2 (struct cleanup
**pmy_chain
, make_cleanup_ftype
*function
,
311 void *arg
, void (*free_arg
) (void *))
314 = (struct cleanup
*) xmalloc (sizeof (struct cleanup
));
315 struct cleanup
*old_chain
= *pmy_chain
;
317 new->next
= *pmy_chain
;
318 new->function
= function
;
319 new->free_arg
= free_arg
;
327 make_my_cleanup (struct cleanup
**pmy_chain
, make_cleanup_ftype
*function
,
330 return make_my_cleanup2 (pmy_chain
, function
, arg
, NULL
);
333 /* Discard cleanups and do the actions they describe
334 until we get back to the point OLD_CHAIN in the cleanup_chain. */
337 do_cleanups (struct cleanup
*old_chain
)
339 do_my_cleanups (&cleanup_chain
, old_chain
);
343 do_final_cleanups (struct cleanup
*old_chain
)
345 do_my_cleanups (&final_cleanup_chain
, old_chain
);
349 do_my_cleanups (struct cleanup
**pmy_chain
,
350 struct cleanup
*old_chain
)
353 while ((ptr
= *pmy_chain
) != old_chain
)
355 *pmy_chain
= ptr
->next
; /* Do this first incase recursion */
356 (*ptr
->function
) (ptr
->arg
);
358 (*ptr
->free_arg
) (ptr
->arg
);
363 /* Discard cleanups, not doing the actions they describe,
364 until we get back to the point OLD_CHAIN in the cleanup_chain. */
367 discard_cleanups (struct cleanup
*old_chain
)
369 discard_my_cleanups (&cleanup_chain
, old_chain
);
373 discard_final_cleanups (struct cleanup
*old_chain
)
375 discard_my_cleanups (&final_cleanup_chain
, old_chain
);
379 discard_my_cleanups (struct cleanup
**pmy_chain
,
380 struct cleanup
*old_chain
)
383 while ((ptr
= *pmy_chain
) != old_chain
)
385 *pmy_chain
= ptr
->next
;
387 (*ptr
->free_arg
) (ptr
->arg
);
392 /* Set the cleanup_chain to 0, and return the old cleanup chain. */
396 return save_my_cleanups (&cleanup_chain
);
400 save_final_cleanups (void)
402 return save_my_cleanups (&final_cleanup_chain
);
406 save_my_cleanups (struct cleanup
**pmy_chain
)
408 struct cleanup
*old_chain
= *pmy_chain
;
414 /* Restore the cleanup chain from a previously saved chain. */
416 restore_cleanups (struct cleanup
*chain
)
418 restore_my_cleanups (&cleanup_chain
, chain
);
422 restore_final_cleanups (struct cleanup
*chain
)
424 restore_my_cleanups (&final_cleanup_chain
, chain
);
428 restore_my_cleanups (struct cleanup
**pmy_chain
, struct cleanup
*chain
)
433 /* This function is useful for cleanups.
437 old_chain = make_cleanup (free_current_contents, &foo);
439 to arrange to free the object thus allocated. */
442 free_current_contents (void *ptr
)
444 void **location
= ptr
;
445 if (location
== NULL
)
446 internal_error (__FILE__
, __LINE__
,
447 _("free_current_contents: NULL pointer"));
448 if (*location
!= NULL
)
455 /* Provide a known function that does nothing, to use as a base for
456 for a possibly long chain of cleanups. This is useful where we
457 use the cleanup chain for handling normal cleanups as well as dealing
458 with cleanups that need to be done as a result of a call to error().
459 In such cases, we may not be certain where the first cleanup is, unless
460 we have a do-nothing one to always use as the base. */
463 null_cleanup (void *arg
)
467 /* Continuations are implemented as cleanups internally. Inherit from
474 /* Add a continuation to the continuation list of THREAD. The new
475 continuation will be added at the front. */
477 add_continuation (struct thread_info
*thread
,
478 void (*continuation_hook
) (void *), void *args
,
479 void (*continuation_free_args
) (void *))
481 struct cleanup
*as_cleanup
= &thread
->continuations
->base
;
482 make_cleanup_ftype
*continuation_hook_fn
= continuation_hook
;
484 make_my_cleanup2 (&as_cleanup
,
485 continuation_hook_fn
,
487 continuation_free_args
);
489 thread
->continuations
= (struct continuation
*) as_cleanup
;
493 restore_thread_cleanup (void *arg
)
495 ptid_t
*ptid_p
= arg
;
496 switch_to_thread (*ptid_p
);
499 /* Walk down the continuation list of PTID, and execute all the
500 continuations. There is a problem though. In some cases new
501 continuations may be added while we are in the middle of this loop.
502 If this happens they will be added in the front, and done before we
503 have a chance of exhausting those that were already there. We need
504 to then save the beginning of the list in a pointer and do the
505 continuations from there on, instead of using the global beginning
506 of list as our iteration pointer. */
508 do_all_continuations_ptid (ptid_t ptid
,
509 struct continuation
**continuations_p
)
511 struct cleanup
*old_chain
;
512 ptid_t current_thread
;
513 struct cleanup
*as_cleanup
;
515 if (*continuations_p
== NULL
)
518 current_thread
= inferior_ptid
;
520 /* Restore selected thread on exit. Don't try to restore the frame
523 - When running continuations, the selected frame is always #0.
525 - The continuations may trigger symbol file loads, which may
526 change the frame layout (frame ids change), which would trigger
527 a warning if we used make_cleanup_restore_current_thread. */
529 old_chain
= make_cleanup (restore_thread_cleanup
, ¤t_thread
);
531 /* Let the continuation see this thread as selected. */
532 switch_to_thread (ptid
);
534 /* Copy the list header into another pointer, and set the global
535 list header to null, so that the global list can change as a side
536 effect of invoking the continuations and the processing of the
537 preexisting continuations will not be affected. */
539 as_cleanup
= &(*continuations_p
)->base
;
540 *continuations_p
= NULL
;
542 /* Work now on the list we have set aside. */
543 do_my_cleanups (&as_cleanup
, NULL
);
545 do_cleanups (old_chain
);
548 /* Callback for iterate over threads. */
550 do_all_continuations_thread_callback (struct thread_info
*thread
, void *data
)
552 do_all_continuations_ptid (thread
->ptid
, &thread
->continuations
);
556 /* Do all continuations of thread THREAD. */
558 do_all_continuations_thread (struct thread_info
*thread
)
560 do_all_continuations_thread_callback (thread
, NULL
);
563 /* Do all continuations of all threads. */
565 do_all_continuations (void)
567 iterate_over_threads (do_all_continuations_thread_callback
, NULL
);
570 /* Callback for iterate over threads. */
572 discard_all_continuations_thread_callback (struct thread_info
*thread
,
575 struct cleanup
*continuation_ptr
= &thread
->continuations
->base
;
576 discard_my_cleanups (&continuation_ptr
, NULL
);
577 thread
->continuations
= NULL
;
581 /* Get rid of all the continuations of THREAD. */
583 discard_all_continuations_thread (struct thread_info
*thread
)
585 discard_all_continuations_thread_callback (thread
, NULL
);
588 /* Get rid of all the continuations of all threads. */
590 discard_all_continuations (void)
592 iterate_over_threads (discard_all_continuations_thread_callback
, NULL
);
596 /* Add a continuation to the intermediate continuation list of THREAD.
597 The new continuation will be added at the front. */
599 add_intermediate_continuation (struct thread_info
*thread
,
600 void (*continuation_hook
)
601 (void *), void *args
,
602 void (*continuation_free_args
) (void *))
604 struct cleanup
*as_cleanup
= &thread
->intermediate_continuations
->base
;
605 make_cleanup_ftype
*continuation_hook_fn
= continuation_hook
;
607 make_my_cleanup2 (&as_cleanup
,
608 continuation_hook_fn
,
610 continuation_free_args
);
612 thread
->intermediate_continuations
= (struct continuation
*) as_cleanup
;
615 /* Walk down the cmd_continuation list, and execute all the
616 continuations. There is a problem though. In some cases new
617 continuations may be added while we are in the middle of this
618 loop. If this happens they will be added in the front, and done
619 before we have a chance of exhausting those that were already
620 there. We need to then save the beginning of the list in a pointer
621 and do the continuations from there on, instead of using the
622 global beginning of list as our iteration pointer.*/
624 do_all_intermediate_continuations_thread_callback (struct thread_info
*thread
,
627 do_all_continuations_ptid (thread
->ptid
,
628 &thread
->intermediate_continuations
);
632 /* Do all intermediate continuations of thread THREAD. */
634 do_all_intermediate_continuations_thread (struct thread_info
*thread
)
636 do_all_intermediate_continuations_thread_callback (thread
, NULL
);
639 /* Do all intermediate continuations of all threads. */
641 do_all_intermediate_continuations (void)
643 iterate_over_threads (do_all_intermediate_continuations_thread_callback
, NULL
);
646 /* Callback for iterate over threads. */
648 discard_all_intermediate_continuations_thread_callback (struct thread_info
*thread
,
651 struct cleanup
*continuation_ptr
= &thread
->intermediate_continuations
->base
;
652 discard_my_cleanups (&continuation_ptr
, NULL
);
653 thread
->intermediate_continuations
= NULL
;
657 /* Get rid of all the intermediate continuations of THREAD. */
659 discard_all_intermediate_continuations_thread (struct thread_info
*thread
)
661 discard_all_intermediate_continuations_thread_callback (thread
, NULL
);
664 /* Get rid of all the intermediate continuations of all threads. */
666 discard_all_intermediate_continuations (void)
668 iterate_over_threads (discard_all_intermediate_continuations_thread_callback
, NULL
);
673 /* Print a warning message. The first argument STRING is the warning
674 message, used as an fprintf format string, the second is the
675 va_list of arguments for that string. A warning is unfiltered (not
676 paginated) so that the user does not need to page through each
677 screen full of warnings when there are lots of them. */
680 vwarning (const char *string
, va_list args
)
682 if (deprecated_warning_hook
)
683 (*deprecated_warning_hook
) (string
, args
);
686 target_terminal_ours ();
687 wrap_here (""); /* Force out any buffered output */
688 gdb_flush (gdb_stdout
);
689 if (warning_pre_print
)
690 fputs_unfiltered (warning_pre_print
, gdb_stderr
);
691 vfprintf_unfiltered (gdb_stderr
, string
, args
);
692 fprintf_unfiltered (gdb_stderr
, "\n");
697 /* Print a warning message.
698 The first argument STRING is the warning message, used as a fprintf string,
699 and the remaining args are passed as arguments to it.
700 The primary difference between warnings and errors is that a warning
701 does not force the return to command level. */
704 warning (const char *string
, ...)
707 va_start (args
, string
);
708 vwarning (string
, args
);
712 /* Print an error message and return to command level.
713 The first argument STRING is the error message, used as a fprintf string,
714 and the remaining args are passed as arguments to it. */
717 verror (const char *string
, va_list args
)
719 throw_verror (GENERIC_ERROR
, string
, args
);
723 error (const char *string
, ...)
726 va_start (args
, string
);
727 throw_verror (GENERIC_ERROR
, string
, args
);
731 /* Print an error message and quit.
732 The first argument STRING is the error message, used as a fprintf string,
733 and the remaining args are passed as arguments to it. */
736 vfatal (const char *string
, va_list args
)
738 throw_vfatal (string
, args
);
742 fatal (const char *string
, ...)
745 va_start (args
, string
);
746 throw_vfatal (string
, args
);
751 error_stream (struct ui_file
*stream
)
754 char *message
= ui_file_xstrdup (stream
, &len
);
755 make_cleanup (xfree
, message
);
756 error (("%s"), message
);
759 /* Print a message reporting an internal error/warning. Ask the user
760 if they want to continue, dump core, or just exit. Return
761 something to indicate a quit. */
763 struct internal_problem
766 /* FIXME: cagney/2002-08-15: There should be ``maint set/show''
767 commands available for controlling these variables. */
768 enum auto_boolean should_quit
;
769 enum auto_boolean should_dump_core
;
772 /* Report a problem, internal to GDB, to the user. Once the problem
773 has been reported, and assuming GDB didn't quit, the caller can
774 either allow execution to resume or throw an error. */
776 static void ATTR_FORMAT (printf
, 4, 0)
777 internal_vproblem (struct internal_problem
*problem
,
778 const char *file
, int line
, const char *fmt
, va_list ap
)
785 /* Don't allow infinite error/warning recursion. */
787 static char msg
[] = "Recursive internal problem.\n";
795 fputs_unfiltered (msg
, gdb_stderr
);
796 abort (); /* NOTE: GDB has only three calls to abort(). */
799 write (STDERR_FILENO
, msg
, sizeof (msg
));
804 /* Try to get the message out and at the start of a new line. */
805 target_terminal_ours ();
808 /* Create a string containing the full error/warning message. Need
809 to call query with this full string, as otherwize the reason
810 (error/warning) and question become separated. Format using a
811 style similar to a compiler error message. Include extra detail
812 so that the user knows that they are living on the edge. */
815 msg
= xstrvprintf (fmt
, ap
);
816 reason
= xstrprintf ("\
818 A problem internal to GDB has been detected,\n\
819 further debugging may prove unreliable.", file
, line
, problem
->name
, msg
);
821 make_cleanup (xfree
, reason
);
824 switch (problem
->should_quit
)
826 case AUTO_BOOLEAN_AUTO
:
827 /* Default (yes/batch case) is to quit GDB. When in batch mode
828 this lessens the likelhood of GDB going into an infinate
830 quit_p
= query (_("%s\nQuit this debugging session? "), reason
);
832 case AUTO_BOOLEAN_TRUE
:
835 case AUTO_BOOLEAN_FALSE
:
839 internal_error (__FILE__
, __LINE__
, _("bad switch"));
842 switch (problem
->should_dump_core
)
844 case AUTO_BOOLEAN_AUTO
:
845 /* Default (yes/batch case) is to dump core. This leaves a GDB
846 `dropping' so that it is easier to see that something went
848 dump_core_p
= query (_("%s\nCreate a core file of GDB? "), reason
);
851 case AUTO_BOOLEAN_TRUE
:
854 case AUTO_BOOLEAN_FALSE
:
858 internal_error (__FILE__
, __LINE__
, _("bad switch"));
864 abort (); /* NOTE: GDB has only three calls to abort(). */
872 #ifdef HAVE_WORKING_FORK
874 abort (); /* NOTE: GDB has only three calls to abort(). */
882 static struct internal_problem internal_error_problem
= {
883 "internal-error", AUTO_BOOLEAN_AUTO
, AUTO_BOOLEAN_AUTO
887 internal_verror (const char *file
, int line
, const char *fmt
, va_list ap
)
889 internal_vproblem (&internal_error_problem
, file
, line
, fmt
, ap
);
890 deprecated_throw_reason (RETURN_ERROR
);
894 internal_error (const char *file
, int line
, const char *string
, ...)
897 va_start (ap
, string
);
898 internal_verror (file
, line
, string
, ap
);
902 static struct internal_problem internal_warning_problem
= {
903 "internal-warning", AUTO_BOOLEAN_AUTO
, AUTO_BOOLEAN_AUTO
907 internal_vwarning (const char *file
, int line
, const char *fmt
, va_list ap
)
909 internal_vproblem (&internal_warning_problem
, file
, line
, fmt
, ap
);
913 internal_warning (const char *file
, int line
, const char *string
, ...)
916 va_start (ap
, string
);
917 internal_vwarning (file
, line
, string
, ap
);
921 /* Print the system error message for errno, and also mention STRING
922 as the file name for which the error was encountered.
923 Then return to command level. */
926 perror_with_name (const char *string
)
931 err
= safe_strerror (errno
);
932 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
933 strcpy (combined
, string
);
934 strcat (combined
, ": ");
935 strcat (combined
, err
);
937 /* I understand setting these is a matter of taste. Still, some people
938 may clear errno but not know about bfd_error. Doing this here is not
940 bfd_set_error (bfd_error_no_error
);
943 error (_("%s."), combined
);
946 /* Print the system error message for ERRCODE, and also mention STRING
947 as the file name for which the error was encountered. */
950 print_sys_errmsg (const char *string
, int errcode
)
955 err
= safe_strerror (errcode
);
956 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
957 strcpy (combined
, string
);
958 strcat (combined
, ": ");
959 strcat (combined
, err
);
961 /* We want anything which was printed on stdout to come out first, before
963 gdb_flush (gdb_stdout
);
964 fprintf_unfiltered (gdb_stderr
, "%s.\n", combined
);
967 /* Control C eventually causes this to be called, at a convenient time. */
973 /* No steenking SIGINT will ever be coming our way when the
974 program is resumed. Don't lie. */
978 /* If there is no terminal switching for this target, then we can't
979 possibly get screwed by the lack of job control. */
980 || current_target
.to_terminal_ours
== NULL
)
983 fatal ("Quit (expect signal SIGINT when the program is resumed)");
988 /* Called when a memory allocation fails, with the number of bytes of
989 memory requested in SIZE. */
996 internal_error (__FILE__
, __LINE__
,
997 _("virtual memory exhausted: can't allocate %ld bytes."),
1002 internal_error (__FILE__
, __LINE__
, _("virtual memory exhausted."));
1006 /* The xmalloc() (libiberty.h) family of memory management routines.
1008 These are like the ISO-C malloc() family except that they implement
1009 consistent semantics and guard against typical memory management
1012 /* NOTE: These are declared using PTR to ensure consistency with
1013 "libiberty.h". xfree() is GDB local. */
1016 xmalloc (size_t size
)
1020 /* See libiberty/xmalloc.c. This function need's to match that's
1021 semantics. It never returns NULL. */
1025 val
= malloc (size
); /* OK: malloc */
1033 xzalloc (size_t size
)
1035 return xcalloc (1, size
);
1039 xrealloc (PTR ptr
, size_t size
) /* OK: PTR */
1043 /* See libiberty/xmalloc.c. This function need's to match that's
1044 semantics. It never returns NULL. */
1049 val
= realloc (ptr
, size
); /* OK: realloc */
1051 val
= malloc (size
); /* OK: malloc */
1059 xcalloc (size_t number
, size_t size
)
1063 /* See libiberty/xmalloc.c. This function need's to match that's
1064 semantics. It never returns NULL. */
1065 if (number
== 0 || size
== 0)
1071 mem
= calloc (number
, size
); /* OK: xcalloc */
1073 nomem (number
* size
);
1082 free (ptr
); /* OK: free */
1086 /* Like asprintf/vasprintf but get an internal_error if the call
1090 xstrprintf (const char *format
, ...)
1094 va_start (args
, format
);
1095 ret
= xstrvprintf (format
, args
);
1101 xasprintf (char **ret
, const char *format
, ...)
1104 va_start (args
, format
);
1105 (*ret
) = xstrvprintf (format
, args
);
1110 xvasprintf (char **ret
, const char *format
, va_list ap
)
1112 (*ret
) = xstrvprintf (format
, ap
);
1116 xstrvprintf (const char *format
, va_list ap
)
1119 int status
= vasprintf (&ret
, format
, ap
);
1120 /* NULL is returned when there was a memory allocation problem, or
1121 any other error (for instance, a bad format string). A negative
1122 status (the printed length) with a non-NULL buffer should never
1123 happen, but just to be sure. */
1124 if (ret
== NULL
|| status
< 0)
1125 internal_error (__FILE__
, __LINE__
, _("vasprintf call failed"));
1130 xsnprintf (char *str
, size_t size
, const char *format
, ...)
1135 va_start (args
, format
);
1136 ret
= vsnprintf (str
, size
, format
, args
);
1137 gdb_assert (ret
< size
);
1143 /* My replacement for the read system call.
1144 Used like `read' but keeps going if `read' returns too soon. */
1147 myread (int desc
, char *addr
, int len
)
1154 val
= read (desc
, addr
, len
);
1158 return orglen
- len
;
1165 /* Make a copy of the string at PTR with SIZE characters
1166 (and add a null character at the end in the copy).
1167 Uses malloc to get the space. Returns the address of the copy. */
1170 savestring (const char *ptr
, size_t size
)
1172 char *p
= (char *) xmalloc (size
+ 1);
1173 memcpy (p
, ptr
, size
);
1179 print_spaces (int n
, struct ui_file
*file
)
1181 fputs_unfiltered (n_spaces (n
), file
);
1184 /* Print a host address. */
1187 gdb_print_host_address (const void *addr
, struct ui_file
*stream
)
1190 /* We could use the %p conversion specifier to fprintf if we had any
1191 way of knowing whether this host supports it. But the following
1192 should work on the Alpha and on 32 bit machines. */
1194 fprintf_filtered (stream
, "0x%lx", (unsigned long) addr
);
1198 /* This function supports the query, nquery, and yquery functions.
1199 Ask user a y-or-n question and return 0 if answer is no, 1 if
1200 answer is yes, or default the answer to the specified default
1201 (for yquery or nquery). DEFCHAR may be 'y' or 'n' to provide a
1202 default answer, or '\0' for no default.
1203 CTLSTR is the control string and should end in "? ". It should
1204 not say how to answer, because we do that.
1205 ARGS are the arguments passed along with the CTLSTR argument to
1208 static int ATTR_FORMAT (printf
, 1, 0)
1209 defaulted_query (const char *ctlstr
, const char defchar
, va_list args
)
1215 char def_answer
, not_def_answer
;
1216 char *y_string
, *n_string
, *question
;
1218 /* Set up according to which answer is the default. */
1219 if (defchar
== '\0')
1223 not_def_answer
= 'N';
1227 else if (defchar
== 'y')
1231 not_def_answer
= 'N';
1239 not_def_answer
= 'Y';
1244 /* Automatically answer the default value if the user did not want
1249 /* If input isn't coming from the user directly, just say what
1250 question we're asking, and then answer "yes" automatically. This
1251 way, important error messages don't get lost when talking to GDB
1253 if (! input_from_terminal_p ())
1256 vfprintf_filtered (gdb_stdout
, ctlstr
, args
);
1258 printf_filtered (_("(%s or %s) [answered %c; input not from terminal]\n"),
1259 y_string
, n_string
, def_answer
);
1260 gdb_flush (gdb_stdout
);
1265 /* Automatically answer the default value if input is not from the user
1266 directly, or if the user did not want prompts. */
1267 if (!input_from_terminal_p () || !caution
)
1270 if (deprecated_query_hook
)
1272 return deprecated_query_hook (ctlstr
, args
);
1275 /* Format the question outside of the loop, to avoid reusing args. */
1276 question
= xstrvprintf (ctlstr
, args
);
1280 wrap_here (""); /* Flush any buffered output */
1281 gdb_flush (gdb_stdout
);
1283 if (annotation_level
> 1)
1284 printf_filtered (("\n\032\032pre-query\n"));
1286 fputs_filtered (question
, gdb_stdout
);
1287 printf_filtered (_("(%s or %s) "), y_string
, n_string
);
1289 if (annotation_level
> 1)
1290 printf_filtered (("\n\032\032query\n"));
1293 gdb_flush (gdb_stdout
);
1295 answer
= fgetc (stdin
);
1296 clearerr (stdin
); /* in case of C-d */
1297 if (answer
== EOF
) /* C-d */
1299 printf_filtered ("EOF [assumed %c]\n", def_answer
);
1303 /* Eat rest of input line, to EOF or newline */
1307 ans2
= fgetc (stdin
);
1310 while (ans2
!= EOF
&& ans2
!= '\n' && ans2
!= '\r');
1314 /* Check answer. For the non-default, the user must specify
1315 the non-default explicitly. */
1316 if (answer
== not_def_answer
)
1318 retval
= !def_value
;
1321 /* Otherwise, if a default was specified, the user may either
1322 specify the required input or have it default by entering
1324 if (answer
== def_answer
1325 || (defchar
!= '\0' &&
1326 (answer
== '\n' || answer
== '\r' || answer
== EOF
)))
1331 /* Invalid entries are not defaulted and require another selection. */
1332 printf_filtered (_("Please answer %s or %s.\n"),
1333 y_string
, n_string
);
1337 if (annotation_level
> 1)
1338 printf_filtered (("\n\032\032post-query\n"));
1343 /* Ask user a y-or-n question and return 0 if answer is no, 1 if
1344 answer is yes, or 0 if answer is defaulted.
1345 Takes three args which are given to printf to print the question.
1346 The first, a control string, should end in "? ".
1347 It should not say how to answer, because we do that. */
1350 nquery (const char *ctlstr
, ...)
1354 va_start (args
, ctlstr
);
1355 return defaulted_query (ctlstr
, 'n', args
);
1359 /* Ask user a y-or-n question and return 0 if answer is no, 1 if
1360 answer is yes, or 1 if answer is defaulted.
1361 Takes three args which are given to printf to print the question.
1362 The first, a control string, should end in "? ".
1363 It should not say how to answer, because we do that. */
1366 yquery (const char *ctlstr
, ...)
1370 va_start (args
, ctlstr
);
1371 return defaulted_query (ctlstr
, 'y', args
);
1375 /* Ask user a y-or-n question and return 1 iff answer is yes.
1376 Takes three args which are given to printf to print the question.
1377 The first, a control string, should end in "? ".
1378 It should not say how to answer, because we do that. */
1381 query (const char *ctlstr
, ...)
1385 va_start (args
, ctlstr
);
1386 return defaulted_query (ctlstr
, '\0', args
);
1390 /* Print an error message saying that we couldn't make sense of a
1391 \^mumble sequence in a string or character constant. START and END
1392 indicate a substring of some larger string that contains the
1393 erroneous backslash sequence, missing the initial backslash. */
1395 no_control_char_error (const char *start
, const char *end
)
1397 int len
= end
- start
;
1398 char *copy
= alloca (end
- start
+ 1);
1400 memcpy (copy
, start
, len
);
1403 error (_("There is no control character `\\%s' in the `%s' character set."),
1404 copy
, target_charset ());
1407 /* Parse a C escape sequence. STRING_PTR points to a variable
1408 containing a pointer to the string to parse. That pointer
1409 should point to the character after the \. That pointer
1410 is updated past the characters we use. The value of the
1411 escape sequence is returned.
1413 A negative value means the sequence \ newline was seen,
1414 which is supposed to be equivalent to nothing at all.
1416 If \ is followed by a null character, we return a negative
1417 value and leave the string pointer pointing at the null character.
1419 If \ is followed by 000, we return 0 and leave the string pointer
1420 after the zeros. A value of 0 does not mean end of string. */
1423 parse_escape (char **string_ptr
)
1426 int c
= *(*string_ptr
)++;
1427 if (c_parse_backslash (c
, &target_char
))
1439 /* Remember where this escape sequence started, for reporting
1441 char *sequence_start_pos
= *string_ptr
- 1;
1443 c
= *(*string_ptr
)++;
1447 /* XXXCHARSET: What is `delete' in the host character set? */
1450 if (!host_char_to_target (c
, &target_char
))
1451 error (_("There is no character corresponding to `Delete' "
1452 "in the target character set `%s'."), host_charset ());
1457 target_char
= parse_escape (string_ptr
);
1460 if (!host_char_to_target (c
, &target_char
))
1461 no_control_char_error (sequence_start_pos
, *string_ptr
);
1464 /* Now target_char is something like `c', and we want to find
1465 its control-character equivalent. */
1466 if (!target_char_to_control_char (target_char
, &target_char
))
1467 no_control_char_error (sequence_start_pos
, *string_ptr
);
1472 /* XXXCHARSET: we need to use isdigit and value-of-digit
1473 methods of the host character set here. */
1489 if (c
>= '0' && c
<= '7')
1503 if (!host_char_to_target (c
, &target_char
))
1505 ("The escape sequence `\%c' is equivalent to plain `%c', which"
1506 " has no equivalent\n" "in the `%s' character set.", c
, c
,
1512 /* Print the character C on STREAM as part of the contents of a literal
1513 string whose delimiter is QUOTER. Note that this routine should only
1514 be call for printing things which are independent of the language
1515 of the program being debugged. */
1518 printchar (int c
, void (*do_fputs
) (const char *, struct ui_file
*),
1519 void (*do_fprintf
) (struct ui_file
*, const char *, ...)
1520 ATTRIBUTE_FPTR_PRINTF_2
, struct ui_file
*stream
, int quoter
)
1523 c
&= 0xFF; /* Avoid sign bit follies */
1525 if (c
< 0x20 || /* Low control chars */
1526 (c
>= 0x7F && c
< 0xA0) || /* DEL, High controls */
1527 (sevenbit_strings
&& c
>= 0x80))
1528 { /* high order bit set */
1532 do_fputs ("\\n", stream
);
1535 do_fputs ("\\b", stream
);
1538 do_fputs ("\\t", stream
);
1541 do_fputs ("\\f", stream
);
1544 do_fputs ("\\r", stream
);
1547 do_fputs ("\\e", stream
);
1550 do_fputs ("\\a", stream
);
1553 do_fprintf (stream
, "\\%.3o", (unsigned int) c
);
1559 if (c
== '\\' || c
== quoter
)
1560 do_fputs ("\\", stream
);
1561 do_fprintf (stream
, "%c", c
);
1565 /* Print the character C on STREAM as part of the contents of a
1566 literal string whose delimiter is QUOTER. Note that these routines
1567 should only be call for printing things which are independent of
1568 the language of the program being debugged. */
1571 fputstr_filtered (const char *str
, int quoter
, struct ui_file
*stream
)
1574 printchar (*str
++, fputs_filtered
, fprintf_filtered
, stream
, quoter
);
1578 fputstr_unfiltered (const char *str
, int quoter
, struct ui_file
*stream
)
1581 printchar (*str
++, fputs_unfiltered
, fprintf_unfiltered
, stream
, quoter
);
1585 fputstrn_filtered (const char *str
, int n
, int quoter
,
1586 struct ui_file
*stream
)
1589 for (i
= 0; i
< n
; i
++)
1590 printchar (str
[i
], fputs_filtered
, fprintf_filtered
, stream
, quoter
);
1594 fputstrn_unfiltered (const char *str
, int n
, int quoter
,
1595 struct ui_file
*stream
)
1598 for (i
= 0; i
< n
; i
++)
1599 printchar (str
[i
], fputs_unfiltered
, fprintf_unfiltered
, stream
, quoter
);
1603 /* Number of lines per page or UINT_MAX if paging is disabled. */
1604 static unsigned int lines_per_page
;
1606 show_lines_per_page (struct ui_file
*file
, int from_tty
,
1607 struct cmd_list_element
*c
, const char *value
)
1609 fprintf_filtered (file
, _("\
1610 Number of lines gdb thinks are in a page is %s.\n"),
1614 /* Number of chars per line or UINT_MAX if line folding is disabled. */
1615 static unsigned int chars_per_line
;
1617 show_chars_per_line (struct ui_file
*file
, int from_tty
,
1618 struct cmd_list_element
*c
, const char *value
)
1620 fprintf_filtered (file
, _("\
1621 Number of characters gdb thinks are in a line is %s.\n"),
1625 /* Current count of lines printed on this page, chars on this line. */
1626 static unsigned int lines_printed
, chars_printed
;
1628 /* Buffer and start column of buffered text, for doing smarter word-
1629 wrapping. When someone calls wrap_here(), we start buffering output
1630 that comes through fputs_filtered(). If we see a newline, we just
1631 spit it out and forget about the wrap_here(). If we see another
1632 wrap_here(), we spit it out and remember the newer one. If we see
1633 the end of the line, we spit out a newline, the indent, and then
1634 the buffered output. */
1636 /* Malloc'd buffer with chars_per_line+2 bytes. Contains characters which
1637 are waiting to be output (they have already been counted in chars_printed).
1638 When wrap_buffer[0] is null, the buffer is empty. */
1639 static char *wrap_buffer
;
1641 /* Pointer in wrap_buffer to the next character to fill. */
1642 static char *wrap_pointer
;
1644 /* String to indent by if the wrap occurs. Must not be NULL if wrap_column
1646 static char *wrap_indent
;
1648 /* Column number on the screen where wrap_buffer begins, or 0 if wrapping
1649 is not in effect. */
1650 static int wrap_column
;
1653 /* Inialize the number of lines per page and chars per line. */
1656 init_page_info (void)
1659 if (!tui_get_command_dimension (&chars_per_line
, &lines_per_page
))
1664 #if defined(__GO32__)
1665 rows
= ScreenRows ();
1666 cols
= ScreenCols ();
1667 lines_per_page
= rows
;
1668 chars_per_line
= cols
;
1670 /* Make sure Readline has initialized its terminal settings. */
1671 rl_reset_terminal (NULL
);
1673 /* Get the screen size from Readline. */
1674 rl_get_screen_size (&rows
, &cols
);
1675 lines_per_page
= rows
;
1676 chars_per_line
= cols
;
1678 /* Readline should have fetched the termcap entry for us. */
1679 if (tgetnum ("li") < 0 || getenv ("EMACS"))
1681 /* The number of lines per page is not mentioned in the
1682 terminal description. This probably means that paging is
1683 not useful (e.g. emacs shell window), so disable paging. */
1684 lines_per_page
= UINT_MAX
;
1687 /* FIXME: Get rid of this junk. */
1688 #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER)
1689 SIGWINCH_HANDLER (SIGWINCH
);
1692 /* If the output is not a terminal, don't paginate it. */
1693 if (!ui_file_isatty (gdb_stdout
))
1694 lines_per_page
= UINT_MAX
;
1702 /* Set the screen size based on LINES_PER_PAGE and CHARS_PER_LINE. */
1705 set_screen_size (void)
1707 int rows
= lines_per_page
;
1708 int cols
= chars_per_line
;
1716 /* Update Readline's idea of the terminal size. */
1717 rl_set_screen_size (rows
, cols
);
1720 /* Reinitialize WRAP_BUFFER according to the current value of
1726 if (chars_per_line
== 0)
1731 wrap_buffer
= (char *) xmalloc (chars_per_line
+ 2);
1732 wrap_buffer
[0] = '\0';
1735 wrap_buffer
= (char *) xrealloc (wrap_buffer
, chars_per_line
+ 2);
1736 wrap_pointer
= wrap_buffer
; /* Start it at the beginning. */
1740 set_width_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
1747 set_height_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
1752 /* Wait, so the user can read what's on the screen. Prompt the user
1753 to continue by pressing RETURN. */
1756 prompt_for_continue (void)
1759 char cont_prompt
[120];
1761 if (annotation_level
> 1)
1762 printf_unfiltered (("\n\032\032pre-prompt-for-continue\n"));
1764 strcpy (cont_prompt
,
1765 "---Type <return> to continue, or q <return> to quit---");
1766 if (annotation_level
> 1)
1767 strcat (cont_prompt
, "\n\032\032prompt-for-continue\n");
1769 /* We must do this *before* we call gdb_readline, else it will eventually
1770 call us -- thinking that we're trying to print beyond the end of the
1772 reinitialize_more_filter ();
1775 /* On a real operating system, the user can quit with SIGINT.
1778 'q' is provided on all systems so users don't have to change habits
1779 from system to system, and because telling them what to do in
1780 the prompt is more user-friendly than expecting them to think of
1782 /* Call readline, not gdb_readline, because GO32 readline handles control-C
1783 whereas control-C to gdb_readline will cause the user to get dumped
1785 ignore
= gdb_readline_wrapper (cont_prompt
);
1787 if (annotation_level
> 1)
1788 printf_unfiltered (("\n\032\032post-prompt-for-continue\n"));
1793 while (*p
== ' ' || *p
== '\t')
1796 async_request_quit (0);
1801 /* Now we have to do this again, so that GDB will know that it doesn't
1802 need to save the ---Type <return>--- line at the top of the screen. */
1803 reinitialize_more_filter ();
1805 dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */
1808 /* Reinitialize filter; ie. tell it to reset to original values. */
1811 reinitialize_more_filter (void)
1817 /* Indicate that if the next sequence of characters overflows the line,
1818 a newline should be inserted here rather than when it hits the end.
1819 If INDENT is non-null, it is a string to be printed to indent the
1820 wrapped part on the next line. INDENT must remain accessible until
1821 the next call to wrap_here() or until a newline is printed through
1824 If the line is already overfull, we immediately print a newline and
1825 the indentation, and disable further wrapping.
1827 If we don't know the width of lines, but we know the page height,
1828 we must not wrap words, but should still keep track of newlines
1829 that were explicitly printed.
1831 INDENT should not contain tabs, as that will mess up the char count
1832 on the next line. FIXME.
1834 This routine is guaranteed to force out any output which has been
1835 squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be
1836 used to force out output from the wrap_buffer. */
1839 wrap_here (char *indent
)
1841 /* This should have been allocated, but be paranoid anyway. */
1843 internal_error (__FILE__
, __LINE__
, _("failed internal consistency check"));
1847 *wrap_pointer
= '\0';
1848 fputs_unfiltered (wrap_buffer
, gdb_stdout
);
1850 wrap_pointer
= wrap_buffer
;
1851 wrap_buffer
[0] = '\0';
1852 if (chars_per_line
== UINT_MAX
) /* No line overflow checking */
1856 else if (chars_printed
>= chars_per_line
)
1858 puts_filtered ("\n");
1860 puts_filtered (indent
);
1865 wrap_column
= chars_printed
;
1869 wrap_indent
= indent
;
1873 /* Print input string to gdb_stdout, filtered, with wrap,
1874 arranging strings in columns of n chars. String can be
1875 right or left justified in the column. Never prints
1876 trailing spaces. String should never be longer than
1877 width. FIXME: this could be useful for the EXAMINE
1878 command, which currently doesn't tabulate very well */
1881 puts_filtered_tabular (char *string
, int width
, int right
)
1887 gdb_assert (chars_per_line
> 0);
1888 if (chars_per_line
== UINT_MAX
)
1890 fputs_filtered (string
, gdb_stdout
);
1891 fputs_filtered ("\n", gdb_stdout
);
1895 if (((chars_printed
- 1) / width
+ 2) * width
>= chars_per_line
)
1896 fputs_filtered ("\n", gdb_stdout
);
1898 if (width
>= chars_per_line
)
1899 width
= chars_per_line
- 1;
1901 stringlen
= strlen (string
);
1903 if (chars_printed
> 0)
1904 spaces
= width
- (chars_printed
- 1) % width
- 1;
1906 spaces
+= width
- stringlen
;
1908 spacebuf
= alloca (spaces
+ 1);
1909 spacebuf
[spaces
] = '\0';
1911 spacebuf
[spaces
] = ' ';
1913 fputs_filtered (spacebuf
, gdb_stdout
);
1914 fputs_filtered (string
, gdb_stdout
);
1918 /* Ensure that whatever gets printed next, using the filtered output
1919 commands, starts at the beginning of the line. I.E. if there is
1920 any pending output for the current line, flush it and start a new
1921 line. Otherwise do nothing. */
1926 if (chars_printed
> 0)
1928 puts_filtered ("\n");
1933 /* Like fputs but if FILTER is true, pause after every screenful.
1935 Regardless of FILTER can wrap at points other than the final
1936 character of a line.
1938 Unlike fputs, fputs_maybe_filtered does not return a value.
1939 It is OK for LINEBUFFER to be NULL, in which case just don't print
1942 Note that a longjmp to top level may occur in this routine (only if
1943 FILTER is true) (since prompt_for_continue may do so) so this
1944 routine should not be called when cleanups are not in place. */
1947 fputs_maybe_filtered (const char *linebuffer
, struct ui_file
*stream
,
1950 const char *lineptr
;
1952 if (linebuffer
== 0)
1955 /* Don't do any filtering if it is disabled. */
1956 if ((stream
!= gdb_stdout
) || !pagination_enabled
1957 || (lines_per_page
== UINT_MAX
&& chars_per_line
== UINT_MAX
))
1959 fputs_unfiltered (linebuffer
, stream
);
1963 /* Go through and output each character. Show line extension
1964 when this is necessary; prompt user for new page when this is
1967 lineptr
= linebuffer
;
1970 /* Possible new page. */
1971 if (filter
&& (lines_printed
>= lines_per_page
- 1))
1972 prompt_for_continue ();
1974 while (*lineptr
&& *lineptr
!= '\n')
1976 /* Print a single line. */
1977 if (*lineptr
== '\t')
1980 *wrap_pointer
++ = '\t';
1982 fputc_unfiltered ('\t', stream
);
1983 /* Shifting right by 3 produces the number of tab stops
1984 we have already passed, and then adding one and
1985 shifting left 3 advances to the next tab stop. */
1986 chars_printed
= ((chars_printed
>> 3) + 1) << 3;
1992 *wrap_pointer
++ = *lineptr
;
1994 fputc_unfiltered (*lineptr
, stream
);
1999 if (chars_printed
>= chars_per_line
)
2001 unsigned int save_chars
= chars_printed
;
2005 /* If we aren't actually wrapping, don't output newline --
2006 if chars_per_line is right, we probably just overflowed
2007 anyway; if it's wrong, let us keep going. */
2009 fputc_unfiltered ('\n', stream
);
2011 /* Possible new page. */
2012 if (lines_printed
>= lines_per_page
- 1)
2013 prompt_for_continue ();
2015 /* Now output indentation and wrapped string */
2018 fputs_unfiltered (wrap_indent
, stream
);
2019 *wrap_pointer
= '\0'; /* Null-terminate saved stuff */
2020 fputs_unfiltered (wrap_buffer
, stream
); /* and eject it */
2021 /* FIXME, this strlen is what prevents wrap_indent from
2022 containing tabs. However, if we recurse to print it
2023 and count its chars, we risk trouble if wrap_indent is
2024 longer than (the user settable) chars_per_line.
2025 Note also that this can set chars_printed > chars_per_line
2026 if we are printing a long string. */
2027 chars_printed
= strlen (wrap_indent
)
2028 + (save_chars
- wrap_column
);
2029 wrap_pointer
= wrap_buffer
; /* Reset buffer */
2030 wrap_buffer
[0] = '\0';
2031 wrap_column
= 0; /* And disable fancy wrap */
2036 if (*lineptr
== '\n')
2039 wrap_here ((char *) 0); /* Spit out chars, cancel further wraps */
2041 fputc_unfiltered ('\n', stream
);
2048 fputs_filtered (const char *linebuffer
, struct ui_file
*stream
)
2050 fputs_maybe_filtered (linebuffer
, stream
, 1);
2054 putchar_unfiltered (int c
)
2057 ui_file_write (gdb_stdout
, &buf
, 1);
2061 /* Write character C to gdb_stdout using GDB's paging mechanism and return C.
2062 May return nonlocally. */
2065 putchar_filtered (int c
)
2067 return fputc_filtered (c
, gdb_stdout
);
2071 fputc_unfiltered (int c
, struct ui_file
*stream
)
2074 ui_file_write (stream
, &buf
, 1);
2079 fputc_filtered (int c
, struct ui_file
*stream
)
2085 fputs_filtered (buf
, stream
);
2089 /* puts_debug is like fputs_unfiltered, except it prints special
2090 characters in printable fashion. */
2093 puts_debug (char *prefix
, char *string
, char *suffix
)
2097 /* Print prefix and suffix after each line. */
2098 static int new_line
= 1;
2099 static int return_p
= 0;
2100 static char *prev_prefix
= "";
2101 static char *prev_suffix
= "";
2103 if (*string
== '\n')
2106 /* If the prefix is changing, print the previous suffix, a new line,
2107 and the new prefix. */
2108 if ((return_p
|| (strcmp (prev_prefix
, prefix
) != 0)) && !new_line
)
2110 fputs_unfiltered (prev_suffix
, gdb_stdlog
);
2111 fputs_unfiltered ("\n", gdb_stdlog
);
2112 fputs_unfiltered (prefix
, gdb_stdlog
);
2115 /* Print prefix if we printed a newline during the previous call. */
2119 fputs_unfiltered (prefix
, gdb_stdlog
);
2122 prev_prefix
= prefix
;
2123 prev_suffix
= suffix
;
2125 /* Output characters in a printable format. */
2126 while ((ch
= *string
++) != '\0')
2132 fputc_unfiltered (ch
, gdb_stdlog
);
2135 fprintf_unfiltered (gdb_stdlog
, "\\x%02x", ch
& 0xff);
2139 fputs_unfiltered ("\\\\", gdb_stdlog
);
2142 fputs_unfiltered ("\\b", gdb_stdlog
);
2145 fputs_unfiltered ("\\f", gdb_stdlog
);
2149 fputs_unfiltered ("\\n", gdb_stdlog
);
2152 fputs_unfiltered ("\\r", gdb_stdlog
);
2155 fputs_unfiltered ("\\t", gdb_stdlog
);
2158 fputs_unfiltered ("\\v", gdb_stdlog
);
2162 return_p
= ch
== '\r';
2165 /* Print suffix if we printed a newline. */
2168 fputs_unfiltered (suffix
, gdb_stdlog
);
2169 fputs_unfiltered ("\n", gdb_stdlog
);
2174 /* Print a variable number of ARGS using format FORMAT. If this
2175 information is going to put the amount written (since the last call
2176 to REINITIALIZE_MORE_FILTER or the last page break) over the page size,
2177 call prompt_for_continue to get the users permision to continue.
2179 Unlike fprintf, this function does not return a value.
2181 We implement three variants, vfprintf (takes a vararg list and stream),
2182 fprintf (takes a stream to write on), and printf (the usual).
2184 Note also that a longjmp to top level may occur in this routine
2185 (since prompt_for_continue may do so) so this routine should not be
2186 called when cleanups are not in place. */
2189 vfprintf_maybe_filtered (struct ui_file
*stream
, const char *format
,
2190 va_list args
, int filter
)
2193 struct cleanup
*old_cleanups
;
2195 linebuffer
= xstrvprintf (format
, args
);
2196 old_cleanups
= make_cleanup (xfree
, linebuffer
);
2197 fputs_maybe_filtered (linebuffer
, stream
, filter
);
2198 do_cleanups (old_cleanups
);
2203 vfprintf_filtered (struct ui_file
*stream
, const char *format
, va_list args
)
2205 vfprintf_maybe_filtered (stream
, format
, args
, 1);
2209 vfprintf_unfiltered (struct ui_file
*stream
, const char *format
, va_list args
)
2212 struct cleanup
*old_cleanups
;
2214 linebuffer
= xstrvprintf (format
, args
);
2215 old_cleanups
= make_cleanup (xfree
, linebuffer
);
2216 if (debug_timestamp
&& stream
== gdb_stdlog
)
2221 gettimeofday (&tm
, NULL
);
2222 timestamp
= xstrprintf ("%ld:%ld ", (long) tm
.tv_sec
, (long) tm
.tv_usec
);
2223 make_cleanup (xfree
, timestamp
);
2224 fputs_unfiltered (timestamp
, stream
);
2226 fputs_unfiltered (linebuffer
, stream
);
2227 do_cleanups (old_cleanups
);
2231 vprintf_filtered (const char *format
, va_list args
)
2233 vfprintf_maybe_filtered (gdb_stdout
, format
, args
, 1);
2237 vprintf_unfiltered (const char *format
, va_list args
)
2239 vfprintf_unfiltered (gdb_stdout
, format
, args
);
2243 fprintf_filtered (struct ui_file
*stream
, const char *format
, ...)
2246 va_start (args
, format
);
2247 vfprintf_filtered (stream
, format
, args
);
2252 fprintf_unfiltered (struct ui_file
*stream
, const char *format
, ...)
2255 va_start (args
, format
);
2256 vfprintf_unfiltered (stream
, format
, args
);
2260 /* Like fprintf_filtered, but prints its result indented.
2261 Called as fprintfi_filtered (spaces, stream, format, ...); */
2264 fprintfi_filtered (int spaces
, struct ui_file
*stream
, const char *format
,
2268 va_start (args
, format
);
2269 print_spaces_filtered (spaces
, stream
);
2271 vfprintf_filtered (stream
, format
, args
);
2277 printf_filtered (const char *format
, ...)
2280 va_start (args
, format
);
2281 vfprintf_filtered (gdb_stdout
, format
, args
);
2287 printf_unfiltered (const char *format
, ...)
2290 va_start (args
, format
);
2291 vfprintf_unfiltered (gdb_stdout
, format
, args
);
2295 /* Like printf_filtered, but prints it's result indented.
2296 Called as printfi_filtered (spaces, format, ...); */
2299 printfi_filtered (int spaces
, const char *format
, ...)
2302 va_start (args
, format
);
2303 print_spaces_filtered (spaces
, gdb_stdout
);
2304 vfprintf_filtered (gdb_stdout
, format
, args
);
2308 /* Easy -- but watch out!
2310 This routine is *not* a replacement for puts()! puts() appends a newline.
2311 This one doesn't, and had better not! */
2314 puts_filtered (const char *string
)
2316 fputs_filtered (string
, gdb_stdout
);
2320 puts_unfiltered (const char *string
)
2322 fputs_unfiltered (string
, gdb_stdout
);
2325 /* Return a pointer to N spaces and a null. The pointer is good
2326 until the next call to here. */
2331 static char *spaces
= 0;
2332 static int max_spaces
= -1;
2338 spaces
= (char *) xmalloc (n
+ 1);
2339 for (t
= spaces
+ n
; t
!= spaces
;)
2345 return spaces
+ max_spaces
- n
;
2348 /* Print N spaces. */
2350 print_spaces_filtered (int n
, struct ui_file
*stream
)
2352 fputs_filtered (n_spaces (n
), stream
);
2355 /* C++/ObjC demangler stuff. */
2357 /* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language
2358 LANG, using demangling args ARG_MODE, and print it filtered to STREAM.
2359 If the name is not mangled, or the language for the name is unknown, or
2360 demangling is off, the name is printed in its "raw" form. */
2363 fprintf_symbol_filtered (struct ui_file
*stream
, char *name
,
2364 enum language lang
, int arg_mode
)
2370 /* If user wants to see raw output, no problem. */
2373 fputs_filtered (name
, stream
);
2377 demangled
= language_demangle (language_def (lang
), name
, arg_mode
);
2378 fputs_filtered (demangled
? demangled
: name
, stream
);
2379 if (demangled
!= NULL
)
2387 /* Do a strcmp() type operation on STRING1 and STRING2, ignoring any
2388 differences in whitespace. Returns 0 if they match, non-zero if they
2389 don't (slightly different than strcmp()'s range of return values).
2391 As an extra hack, string1=="FOO(ARGS)" matches string2=="FOO".
2392 This "feature" is useful when searching for matching C++ function names
2393 (such as if the user types 'break FOO', where FOO is a mangled C++
2397 strcmp_iw (const char *string1
, const char *string2
)
2399 while ((*string1
!= '\0') && (*string2
!= '\0'))
2401 while (isspace (*string1
))
2405 while (isspace (*string2
))
2409 if (*string1
!= *string2
)
2413 if (*string1
!= '\0')
2419 return (*string1
!= '\0' && *string1
!= '(') || (*string2
!= '\0');
2422 /* This is like strcmp except that it ignores whitespace and treats
2423 '(' as the first non-NULL character in terms of ordering. Like
2424 strcmp (and unlike strcmp_iw), it returns negative if STRING1 <
2425 STRING2, 0 if STRING2 = STRING2, and positive if STRING1 > STRING2
2426 according to that ordering.
2428 If a list is sorted according to this function and if you want to
2429 find names in the list that match some fixed NAME according to
2430 strcmp_iw(LIST_ELT, NAME), then the place to start looking is right
2431 where this function would put NAME.
2433 Here are some examples of why using strcmp to sort is a bad idea:
2437 Say your partial symtab contains: "foo<char *>", "goo". Then, if
2438 we try to do a search for "foo<char*>", strcmp will locate this
2439 after "foo<char *>" and before "goo". Then lookup_partial_symbol
2440 will start looking at strings beginning with "goo", and will never
2441 see the correct match of "foo<char *>".
2443 Parenthesis example:
2445 In practice, this is less like to be an issue, but I'll give it a
2446 shot. Let's assume that '$' is a legitimate character to occur in
2447 symbols. (Which may well even be the case on some systems.) Then
2448 say that the partial symbol table contains "foo$" and "foo(int)".
2449 strcmp will put them in this order, since '$' < '('. Now, if the
2450 user searches for "foo", then strcmp will sort "foo" before "foo$".
2451 Then lookup_partial_symbol will notice that strcmp_iw("foo$",
2452 "foo") is false, so it won't proceed to the actual match of
2453 "foo(int)" with "foo". */
2456 strcmp_iw_ordered (const char *string1
, const char *string2
)
2458 while ((*string1
!= '\0') && (*string2
!= '\0'))
2460 while (isspace (*string1
))
2464 while (isspace (*string2
))
2468 if (*string1
!= *string2
)
2472 if (*string1
!= '\0')
2481 /* Characters are non-equal unless they're both '\0'; we want to
2482 make sure we get the comparison right according to our
2483 comparison in the cases where one of them is '\0' or '('. */
2485 if (*string2
== '\0')
2490 if (*string2
== '\0')
2495 if (*string2
== '(')
2498 return *string1
- *string2
;
2502 /* A simple comparison function with opposite semantics to strcmp. */
2505 streq (const char *lhs
, const char *rhs
)
2507 return !strcmp (lhs
, rhs
);
2513 ** Answer whether string_to_compare is a full or partial match to
2514 ** template_string. The partial match must be in sequence starting
2518 subset_compare (char *string_to_compare
, char *template_string
)
2521 if (template_string
!= (char *) NULL
&& string_to_compare
!= (char *) NULL
2522 && strlen (string_to_compare
) <= strlen (template_string
))
2525 (template_string
, string_to_compare
, strlen (string_to_compare
)) == 0);
2532 pagination_on_command (char *arg
, int from_tty
)
2534 pagination_enabled
= 1;
2538 pagination_off_command (char *arg
, int from_tty
)
2540 pagination_enabled
= 0;
2544 show_debug_timestamp (struct ui_file
*file
, int from_tty
,
2545 struct cmd_list_element
*c
, const char *value
)
2547 fprintf_filtered (file
, _("Timestamping debugging messages is %s.\n"), value
);
2552 initialize_utils (void)
2554 struct cmd_list_element
*c
;
2556 add_setshow_uinteger_cmd ("width", class_support
, &chars_per_line
, _("\
2557 Set number of characters gdb thinks are in a line."), _("\
2558 Show number of characters gdb thinks are in a line."), NULL
,
2560 show_chars_per_line
,
2561 &setlist
, &showlist
);
2563 add_setshow_uinteger_cmd ("height", class_support
, &lines_per_page
, _("\
2564 Set number of lines gdb thinks are in a page."), _("\
2565 Show number of lines gdb thinks are in a page."), NULL
,
2567 show_lines_per_page
,
2568 &setlist
, &showlist
);
2572 add_setshow_boolean_cmd ("demangle", class_support
, &demangle
, _("\
2573 Set demangling of encoded C++/ObjC names when displaying symbols."), _("\
2574 Show demangling of encoded C++/ObjC names when displaying symbols."), NULL
,
2577 &setprintlist
, &showprintlist
);
2579 add_setshow_boolean_cmd ("pagination", class_support
,
2580 &pagination_enabled
, _("\
2581 Set state of pagination."), _("\
2582 Show state of pagination."), NULL
,
2584 show_pagination_enabled
,
2585 &setlist
, &showlist
);
2589 add_com ("am", class_support
, pagination_on_command
,
2590 _("Enable pagination"));
2591 add_com ("sm", class_support
, pagination_off_command
,
2592 _("Disable pagination"));
2595 add_setshow_boolean_cmd ("sevenbit-strings", class_support
,
2596 &sevenbit_strings
, _("\
2597 Set printing of 8-bit characters in strings as \\nnn."), _("\
2598 Show printing of 8-bit characters in strings as \\nnn."), NULL
,
2600 show_sevenbit_strings
,
2601 &setprintlist
, &showprintlist
);
2603 add_setshow_boolean_cmd ("asm-demangle", class_support
, &asm_demangle
, _("\
2604 Set demangling of C++/ObjC names in disassembly listings."), _("\
2605 Show demangling of C++/ObjC names in disassembly listings."), NULL
,
2608 &setprintlist
, &showprintlist
);
2610 add_setshow_boolean_cmd ("timestamp", class_maintenance
,
2611 &debug_timestamp
, _("\
2612 Set timestamping of debugging messages."), _("\
2613 Show timestamping of debugging messages."), _("\
2614 When set, debugging messages will be marked with seconds and microseconds."),
2616 show_debug_timestamp
,
2617 &setdebuglist
, &showdebuglist
);
2620 /* Machine specific function to handle SIGWINCH signal. */
2622 #ifdef SIGWINCH_HANDLER_BODY
2623 SIGWINCH_HANDLER_BODY
2625 /* print routines to handle variable size regs, etc. */
2626 /* temporary storage using circular buffer */
2632 static char buf
[NUMCELLS
][CELLSIZE
];
2633 static int cell
= 0;
2634 if (++cell
>= NUMCELLS
)
2642 return (gdbarch_addr_bit (current_gdbarch
) / 8 * 2);
2646 paddr (CORE_ADDR addr
)
2648 return phex (addr
, gdbarch_addr_bit (current_gdbarch
) / 8);
2652 paddr_nz (CORE_ADDR addr
)
2654 return phex_nz (addr
, gdbarch_addr_bit (current_gdbarch
) / 8);
2658 paddress (CORE_ADDR addr
)
2660 /* Truncate address to the size of a target address, avoiding shifts
2661 larger or equal than the width of a CORE_ADDR. The local
2662 variable ADDR_BIT stops the compiler reporting a shift overflow
2663 when it won't occur. */
2664 /* NOTE: This assumes that the significant address information is
2665 kept in the least significant bits of ADDR - the upper bits were
2666 either zero or sign extended. Should gdbarch_address_to_pointer or
2667 some ADDRESS_TO_PRINTABLE() be used to do the conversion? */
2669 int addr_bit
= gdbarch_addr_bit (current_gdbarch
);
2671 if (addr_bit
< (sizeof (CORE_ADDR
) * HOST_CHAR_BIT
))
2672 addr
&= ((CORE_ADDR
) 1 << addr_bit
) - 1;
2673 return hex_string (addr
);
2677 decimal2str (char *sign
, ULONGEST addr
, int width
)
2679 /* Steal code from valprint.c:print_decimal(). Should this worry
2680 about the real size of addr as the above does? */
2681 unsigned long temp
[3];
2682 char *str
= get_cell ();
2687 temp
[i
] = addr
% (1000 * 1000 * 1000);
2688 addr
/= (1000 * 1000 * 1000);
2692 while (addr
!= 0 && i
< (sizeof (temp
) / sizeof (temp
[0])));
2701 xsnprintf (str
, CELLSIZE
, "%s%0*lu", sign
, width
, temp
[0]);
2704 xsnprintf (str
, CELLSIZE
, "%s%0*lu%09lu", sign
, width
,
2708 xsnprintf (str
, CELLSIZE
, "%s%0*lu%09lu%09lu", sign
, width
,
2709 temp
[2], temp
[1], temp
[0]);
2712 internal_error (__FILE__
, __LINE__
,
2713 _("failed internal consistency check"));
2720 octal2str (ULONGEST addr
, int width
)
2722 unsigned long temp
[3];
2723 char *str
= get_cell ();
2728 temp
[i
] = addr
% (0100000 * 0100000);
2729 addr
/= (0100000 * 0100000);
2733 while (addr
!= 0 && i
< (sizeof (temp
) / sizeof (temp
[0])));
2743 xsnprintf (str
, CELLSIZE
, "%*o", width
, 0);
2745 xsnprintf (str
, CELLSIZE
, "0%0*lo", width
, temp
[0]);
2748 xsnprintf (str
, CELLSIZE
, "0%0*lo%010lo", width
, temp
[1], temp
[0]);
2751 xsnprintf (str
, CELLSIZE
, "0%0*lo%010lo%010lo", width
,
2752 temp
[2], temp
[1], temp
[0]);
2755 internal_error (__FILE__
, __LINE__
,
2756 _("failed internal consistency check"));
2763 pulongest (ULONGEST u
)
2765 return decimal2str ("", u
, 0);
2769 plongest (LONGEST l
)
2772 return decimal2str ("-", -l
, 0);
2774 return decimal2str ("", l
, 0);
2777 /* Eliminate warning from compiler on 32-bit systems. */
2778 static int thirty_two
= 32;
2781 phex (ULONGEST l
, int sizeof_l
)
2789 xsnprintf (str
, CELLSIZE
, "%08lx%08lx",
2790 (unsigned long) (l
>> thirty_two
),
2791 (unsigned long) (l
& 0xffffffff));
2795 xsnprintf (str
, CELLSIZE
, "%08lx", (unsigned long) l
);
2799 xsnprintf (str
, CELLSIZE
, "%04x", (unsigned short) (l
& 0xffff));
2802 str
= phex (l
, sizeof (l
));
2810 phex_nz (ULONGEST l
, int sizeof_l
)
2818 unsigned long high
= (unsigned long) (l
>> thirty_two
);
2821 xsnprintf (str
, CELLSIZE
, "%lx",
2822 (unsigned long) (l
& 0xffffffff));
2824 xsnprintf (str
, CELLSIZE
, "%lx%08lx", high
,
2825 (unsigned long) (l
& 0xffffffff));
2830 xsnprintf (str
, CELLSIZE
, "%lx", (unsigned long) l
);
2834 xsnprintf (str
, CELLSIZE
, "%x", (unsigned short) (l
& 0xffff));
2837 str
= phex_nz (l
, sizeof (l
));
2844 /* Converts a LONGEST to a C-format hexadecimal literal and stores it
2845 in a static string. Returns a pointer to this string. */
2847 hex_string (LONGEST num
)
2849 char *result
= get_cell ();
2850 xsnprintf (result
, CELLSIZE
, "0x%s", phex_nz (num
, sizeof (num
)));
2854 /* Converts a LONGEST number to a C-format hexadecimal literal and
2855 stores it in a static string. Returns a pointer to this string
2856 that is valid until the next call. The number is padded on the
2857 left with 0s to at least WIDTH characters. */
2859 hex_string_custom (LONGEST num
, int width
)
2861 char *result
= get_cell ();
2862 char *result_end
= result
+ CELLSIZE
- 1;
2863 const char *hex
= phex_nz (num
, sizeof (num
));
2864 int hex_len
= strlen (hex
);
2866 if (hex_len
> width
)
2868 if (width
+ 2 >= CELLSIZE
)
2869 internal_error (__FILE__
, __LINE__
,
2870 _("hex_string_custom: insufficient space to store result"));
2872 strcpy (result_end
- width
- 2, "0x");
2873 memset (result_end
- width
, '0', width
);
2874 strcpy (result_end
- hex_len
, hex
);
2875 return result_end
- width
- 2;
2878 /* Convert VAL to a numeral in the given radix. For
2879 * radix 10, IS_SIGNED may be true, indicating a signed quantity;
2880 * otherwise VAL is interpreted as unsigned. If WIDTH is supplied,
2881 * it is the minimum width (0-padded if needed). USE_C_FORMAT means
2882 * to use C format in all cases. If it is false, then 'x'
2883 * and 'o' formats do not include a prefix (0x or leading 0). */
2886 int_string (LONGEST val
, int radix
, int is_signed
, int width
,
2895 result
= hex_string (val
);
2897 result
= hex_string_custom (val
, width
);
2904 if (is_signed
&& val
< 0)
2905 return decimal2str ("-", -val
, width
);
2907 return decimal2str ("", val
, width
);
2911 char *result
= octal2str (val
, width
);
2912 if (use_c_format
|| val
== 0)
2918 internal_error (__FILE__
, __LINE__
,
2919 _("failed internal consistency check"));
2923 /* Convert a CORE_ADDR into a string. */
2925 core_addr_to_string (const CORE_ADDR addr
)
2927 char *str
= get_cell ();
2929 strcat (str
, phex (addr
, sizeof (addr
)));
2934 core_addr_to_string_nz (const CORE_ADDR addr
)
2936 char *str
= get_cell ();
2938 strcat (str
, phex_nz (addr
, sizeof (addr
)));
2942 /* Convert a string back into a CORE_ADDR. */
2944 string_to_core_addr (const char *my_string
)
2946 int addr_bit
= gdbarch_addr_bit (current_gdbarch
);
2949 if (my_string
[0] == '0' && tolower (my_string
[1]) == 'x')
2951 /* Assume that it is in hex. */
2953 for (i
= 2; my_string
[i
] != '\0'; i
++)
2955 if (isdigit (my_string
[i
]))
2956 addr
= (my_string
[i
] - '0') + (addr
* 16);
2957 else if (isxdigit (my_string
[i
]))
2958 addr
= (tolower (my_string
[i
]) - 'a' + 0xa) + (addr
* 16);
2960 error (_("invalid hex \"%s\""), my_string
);
2963 /* Not very modular, but if the executable format expects
2964 addresses to be sign-extended, then do so if the address was
2965 specified with only 32 significant bits. Really this should
2966 be determined by the target architecture, not by the object
2968 if (i
- 2 == addr_bit
/ 4
2970 && bfd_get_sign_extend_vma (exec_bfd
))
2971 addr
= (addr
^ ((CORE_ADDR
) 1 << (addr_bit
- 1)))
2972 - ((CORE_ADDR
) 1 << (addr_bit
- 1));
2976 /* Assume that it is in decimal. */
2978 for (i
= 0; my_string
[i
] != '\0'; i
++)
2980 if (isdigit (my_string
[i
]))
2981 addr
= (my_string
[i
] - '0') + (addr
* 10);
2983 error (_("invalid decimal \"%s\""), my_string
);
2991 host_address_to_string (const void *addr
)
2993 char *str
= get_cell ();
2994 sprintf (str
, "0x%lx", (unsigned long) addr
);
2999 gdb_realpath (const char *filename
)
3001 /* Method 1: The system has a compile time upper bound on a filename
3002 path. Use that and realpath() to canonicalize the name. This is
3003 the most common case. Note that, if there isn't a compile time
3004 upper bound, you want to avoid realpath() at all costs. */
3005 #if defined(HAVE_REALPATH)
3007 # if defined (PATH_MAX)
3009 # define USE_REALPATH
3010 # elif defined (MAXPATHLEN)
3011 char buf
[MAXPATHLEN
];
3012 # define USE_REALPATH
3014 # if defined (USE_REALPATH)
3015 const char *rp
= realpath (filename
, buf
);
3018 return xstrdup (rp
);
3021 #endif /* HAVE_REALPATH */
3023 /* Method 2: The host system (i.e., GNU) has the function
3024 canonicalize_file_name() which malloc's a chunk of memory and
3025 returns that, use that. */
3026 #if defined(HAVE_CANONICALIZE_FILE_NAME)
3028 char *rp
= canonicalize_file_name (filename
);
3030 return xstrdup (filename
);
3036 /* FIXME: cagney/2002-11-13:
3038 Method 2a: Use realpath() with a NULL buffer. Some systems, due
3039 to the problems described in in method 3, have modified their
3040 realpath() implementation so that it will allocate a buffer when
3041 NULL is passed in. Before this can be used, though, some sort of
3042 configure time test would need to be added. Otherwize the code
3043 will likely core dump. */
3045 /* Method 3: Now we're getting desperate! The system doesn't have a
3046 compile time buffer size and no alternative function. Query the
3047 OS, using pathconf(), for the buffer limit. Care is needed
3048 though, some systems do not limit PATH_MAX (return -1 for
3049 pathconf()) making it impossible to pass a correctly sized buffer
3050 to realpath() (it could always overflow). On those systems, we
3052 #if defined (HAVE_REALPATH) && defined (HAVE_UNISTD_H) && defined(HAVE_ALLOCA)
3054 /* Find out the max path size. */
3055 long path_max
= pathconf ("/", _PC_PATH_MAX
);
3058 /* PATH_MAX is bounded. */
3059 char *buf
= alloca (path_max
);
3060 char *rp
= realpath (filename
, buf
);
3061 return xstrdup (rp
? rp
: filename
);
3066 /* This system is a lost cause, just dup the buffer. */
3067 return xstrdup (filename
);
3070 /* Return a copy of FILENAME, with its directory prefix canonicalized
3074 xfullpath (const char *filename
)
3076 const char *base_name
= lbasename (filename
);
3081 /* Extract the basename of filename, and return immediately
3082 a copy of filename if it does not contain any directory prefix. */
3083 if (base_name
== filename
)
3084 return xstrdup (filename
);
3086 dir_name
= alloca ((size_t) (base_name
- filename
+ 2));
3087 /* Allocate enough space to store the dir_name + plus one extra
3088 character sometimes needed under Windows (see below), and
3089 then the closing \000 character */
3090 strncpy (dir_name
, filename
, base_name
- filename
);
3091 dir_name
[base_name
- filename
] = '\000';
3093 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
3094 /* We need to be careful when filename is of the form 'd:foo', which
3095 is equivalent of d:./foo, which is totally different from d:/foo. */
3096 if (strlen (dir_name
) == 2 && isalpha (dir_name
[0]) && dir_name
[1] == ':')
3099 dir_name
[3] = '\000';
3103 /* Canonicalize the directory prefix, and build the resulting
3104 filename. If the dirname realpath already contains an ending
3105 directory separator, avoid doubling it. */
3106 real_path
= gdb_realpath (dir_name
);
3107 if (IS_DIR_SEPARATOR (real_path
[strlen (real_path
) - 1]))
3108 result
= concat (real_path
, base_name
, (char *)NULL
);
3110 result
= concat (real_path
, SLASH_STRING
, base_name
, (char *)NULL
);
3117 /* This is the 32-bit CRC function used by the GNU separate debug
3118 facility. An executable may contain a section named
3119 .gnu_debuglink, which holds the name of a separate executable file
3120 containing its debug info, and a checksum of that file's contents,
3121 computed using this function. */
3123 gnu_debuglink_crc32 (unsigned long crc
, unsigned char *buf
, size_t len
)
3125 static const unsigned long crc32_table
[256] = {
3126 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419,
3127 0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4,
3128 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07,
3129 0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,
3130 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856,
3131 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
3132 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4,
3133 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
3134 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3,
3135 0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a,
3136 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599,
3137 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
3138 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190,
3139 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f,
3140 0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e,
3141 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
3142 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed,
3143 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
3144 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3,
3145 0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2,
3146 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a,
3147 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5,
3148 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010,
3149 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
3150 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17,
3151 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6,
3152 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615,
3153 0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,
3154 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344,
3155 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
3156 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a,
3157 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
3158 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1,
3159 0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c,
3160 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef,
3161 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
3162 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe,
3163 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31,
3164 0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c,
3165 0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
3166 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b,
3167 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
3168 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1,
3169 0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,
3170 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278,
3171 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7,
3172 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66,
3173 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
3174 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605,
3175 0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8,
3176 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b,
3181 crc
= ~crc
& 0xffffffff;
3182 for (end
= buf
+ len
; buf
< end
; ++buf
)
3183 crc
= crc32_table
[(crc
^ *buf
) & 0xff] ^ (crc
>> 8);
3184 return ~crc
& 0xffffffff;;
3188 align_up (ULONGEST v
, int n
)
3190 /* Check that N is really a power of two. */
3191 gdb_assert (n
&& (n
& (n
-1)) == 0);
3192 return (v
+ n
- 1) & -n
;
3196 align_down (ULONGEST v
, int n
)
3198 /* Check that N is really a power of two. */
3199 gdb_assert (n
&& (n
& (n
-1)) == 0);
3203 /* Allocation function for the libiberty hash table which uses an
3204 obstack. The obstack is passed as DATA. */
3207 hashtab_obstack_allocate (void *data
, size_t size
, size_t count
)
3209 unsigned int total
= size
* count
;
3210 void *ptr
= obstack_alloc ((struct obstack
*) data
, total
);
3211 memset (ptr
, 0, total
);
3215 /* Trivial deallocation function for the libiberty splay tree and hash
3216 table - don't deallocate anything. Rely on later deletion of the
3217 obstack. DATA will be the obstack, although it is not needed
3221 dummy_obstack_deallocate (void *object
, void *data
)
3226 /* The bit offset of the highest byte in a ULONGEST, for overflow
3229 #define HIGH_BYTE_POSN ((sizeof (ULONGEST) - 1) * HOST_CHAR_BIT)
3231 /* True (non-zero) iff DIGIT is a valid digit in radix BASE,
3232 where 2 <= BASE <= 36. */
3235 is_digit_in_base (unsigned char digit
, int base
)
3237 if (!isalnum (digit
))
3240 return (isdigit (digit
) && digit
< base
+ '0');
3242 return (isdigit (digit
) || tolower (digit
) < base
- 10 + 'a');
3246 digit_to_int (unsigned char c
)
3251 return tolower (c
) - 'a' + 10;
3254 /* As for strtoul, but for ULONGEST results. */
3257 strtoulst (const char *num
, const char **trailer
, int base
)
3259 unsigned int high_part
;
3264 /* Skip leading whitespace. */
3265 while (isspace (num
[i
]))
3268 /* Handle prefixes. */
3271 else if (num
[i
] == '-')
3277 if (base
== 0 || base
== 16)
3279 if (num
[i
] == '0' && (num
[i
+ 1] == 'x' || num
[i
+ 1] == 'X'))
3287 if (base
== 0 && num
[i
] == '0')
3293 if (base
< 2 || base
> 36)
3299 result
= high_part
= 0;
3300 for (; is_digit_in_base (num
[i
], base
); i
+= 1)
3302 result
= result
* base
+ digit_to_int (num
[i
]);
3303 high_part
= high_part
* base
+ (unsigned int) (result
>> HIGH_BYTE_POSN
);
3304 result
&= ((ULONGEST
) 1 << HIGH_BYTE_POSN
) - 1;
3305 if (high_part
> 0xff)
3308 result
= ~ (ULONGEST
) 0;
3315 if (trailer
!= NULL
)
3318 result
= result
+ ((ULONGEST
) high_part
<< HIGH_BYTE_POSN
);
3325 /* Simple, portable version of dirname that does not modify its
3329 ldirname (const char *filename
)
3331 const char *base
= lbasename (filename
);
3334 while (base
> filename
&& IS_DIR_SEPARATOR (base
[-1]))
3337 if (base
== filename
)
3340 dirname
= xmalloc (base
- filename
+ 2);
3341 memcpy (dirname
, filename
, base
- filename
);
3343 /* On DOS based file systems, convert "d:foo" to "d:.", so that we
3344 create "d:./bar" later instead of the (different) "d:/bar". */
3345 if (base
- filename
== 2 && IS_ABSOLUTE_PATH (base
)
3346 && !IS_DIR_SEPARATOR (filename
[0]))
3347 dirname
[base
++ - filename
] = '.';
3349 dirname
[base
- filename
] = '\0';