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 2009, 2010, 2011 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"
29 #ifdef HAVE_SYS_RESOURCE_H
30 #include <sys/resource.h>
31 #endif /* HAVE_SYS_RESOURCE_H */
34 #include "tui/tui.h" /* For tui_get_command_dimension. */
41 /* SunOS's curses.h has a '#define reg register' in it. Thank you Sun. */
52 #include "expression.h"
56 #include "filenames.h"
58 #include "gdb_obstack.h"
63 #include "inferior.h" /* for signed_pointer_to_address */
65 #include <sys/param.h> /* For MAXPATHLEN */
67 #include "gdb_curses.h"
69 #include "readline/readline.h"
74 #include "gdb_usleep.h"
76 #include "gdb_regex.h"
79 extern PTR
malloc (); /* ARI: PTR */
81 #if !HAVE_DECL_REALLOC
82 extern PTR
realloc (); /* ARI: PTR */
88 /* readline defines this. */
91 void (*deprecated_error_begin_hook
) (void);
93 /* Prototypes for local functions */
95 static void vfprintf_maybe_filtered (struct ui_file
*, const char *,
96 va_list, int) ATTRIBUTE_PRINTF (2, 0);
98 static void fputs_maybe_filtered (const char *, struct ui_file
*, int);
100 static void do_my_cleanups (struct cleanup
**, struct cleanup
*);
102 static void prompt_for_continue (void);
104 static void set_screen_size (void);
105 static void set_width (void);
107 /* A flag indicating whether to timestamp debugging messages. */
109 static int debug_timestamp
= 0;
111 /* Chain of cleanup actions established with make_cleanup,
112 to be executed if an error happens. */
114 static struct cleanup
*cleanup_chain
; /* cleaned up after a failed command */
115 static struct cleanup
*final_cleanup_chain
; /* cleaned up when gdb exits */
117 /* Nonzero if we have job control. */
121 /* Nonzero means a quit has been requested. */
125 /* Nonzero means quit immediately if Control-C is typed now, rather
126 than waiting until QUIT is executed. Be careful in setting this;
127 code which executes with immediate_quit set has to be very careful
128 about being able to deal with being interrupted at any time. It is
129 almost always better to use QUIT; the only exception I can think of
130 is being able to quit out of a system call (using EINTR loses if
131 the SIGINT happens between the previous QUIT and the system call).
132 To immediately quit in the case in which a SIGINT happens between
133 the previous QUIT and setting immediate_quit (desirable anytime we
134 expect to block), call QUIT after setting immediate_quit. */
138 /* Nonzero means that encoded C++/ObjC names should be printed out in their
139 C++/ObjC form rather than raw. */
143 show_demangle (struct ui_file
*file
, int from_tty
,
144 struct cmd_list_element
*c
, const char *value
)
146 fprintf_filtered (file
,
147 _("Demangling of encoded C++/ObjC names "
148 "when displaying symbols is %s.\n"),
152 /* Nonzero means that encoded C++/ObjC names should be printed out in their
153 C++/ObjC form even in assembler language displays. If this is set, but
154 DEMANGLE is zero, names are printed raw, i.e. DEMANGLE controls. */
156 int asm_demangle
= 0;
158 show_asm_demangle (struct ui_file
*file
, int from_tty
,
159 struct cmd_list_element
*c
, const char *value
)
161 fprintf_filtered (file
,
162 _("Demangling of C++/ObjC names in "
163 "disassembly listings is %s.\n"),
167 /* Nonzero means that strings with character values >0x7F should be printed
168 as octal escapes. Zero means just print the value (e.g. it's an
169 international character, and the terminal or window can cope.) */
171 int sevenbit_strings
= 0;
173 show_sevenbit_strings (struct ui_file
*file
, int from_tty
,
174 struct cmd_list_element
*c
, const char *value
)
176 fprintf_filtered (file
, _("Printing of 8-bit characters "
177 "in strings as \\nnn is %s.\n"),
181 /* String to be printed before error messages, if any. */
183 char *error_pre_print
;
185 /* String to be printed before quit messages, if any. */
187 char *quit_pre_print
;
189 /* String to be printed before warning messages, if any. */
191 char *warning_pre_print
= "\nwarning: ";
193 int pagination_enabled
= 1;
195 show_pagination_enabled (struct ui_file
*file
, int from_tty
,
196 struct cmd_list_element
*c
, const char *value
)
198 fprintf_filtered (file
, _("State of pagination is %s.\n"), value
);
203 /* Add a new cleanup to the cleanup_chain,
204 and return the previous chain pointer
205 to be passed later to do_cleanups or discard_cleanups.
206 Args are FUNCTION to clean up with, and ARG to pass to it. */
209 make_cleanup (make_cleanup_ftype
*function
, void *arg
)
211 return make_my_cleanup (&cleanup_chain
, function
, arg
);
215 make_cleanup_dtor (make_cleanup_ftype
*function
, void *arg
,
216 void (*dtor
) (void *))
218 return make_my_cleanup2 (&cleanup_chain
,
219 function
, arg
, dtor
);
223 make_final_cleanup (make_cleanup_ftype
*function
, void *arg
)
225 return make_my_cleanup (&final_cleanup_chain
, function
, arg
);
229 do_freeargv (void *arg
)
231 freeargv ((char **) arg
);
235 make_cleanup_freeargv (char **arg
)
237 return make_my_cleanup (&cleanup_chain
, do_freeargv
, arg
);
241 do_bfd_close_cleanup (void *arg
)
247 make_cleanup_bfd_close (bfd
*abfd
)
249 return make_cleanup (do_bfd_close_cleanup
, abfd
);
253 do_close_cleanup (void *arg
)
261 make_cleanup_close (int fd
)
263 int *saved_fd
= xmalloc (sizeof (fd
));
266 return make_cleanup_dtor (do_close_cleanup
, saved_fd
, xfree
);
269 /* Helper function which does the work for make_cleanup_fclose. */
272 do_fclose_cleanup (void *arg
)
279 /* Return a new cleanup that closes FILE. */
282 make_cleanup_fclose (FILE *file
)
284 return make_cleanup (do_fclose_cleanup
, file
);
287 /* Helper function which does the work for make_cleanup_obstack_free. */
290 do_obstack_free (void *arg
)
292 struct obstack
*ob
= arg
;
294 obstack_free (ob
, NULL
);
297 /* Return a new cleanup that frees OBSTACK. */
300 make_cleanup_obstack_free (struct obstack
*obstack
)
302 return make_cleanup (do_obstack_free
, obstack
);
306 do_ui_file_delete (void *arg
)
308 ui_file_delete (arg
);
312 make_cleanup_ui_file_delete (struct ui_file
*arg
)
314 return make_my_cleanup (&cleanup_chain
, do_ui_file_delete
, arg
);
317 /* Helper function for make_cleanup_ui_out_redirect_pop. */
320 do_ui_out_redirect_pop (void *arg
)
322 struct ui_out
*uiout
= arg
;
324 if (ui_out_redirect (uiout
, NULL
) < 0)
325 warning (_("Cannot restore redirection of the current output protocol"));
328 /* Return a new cleanup that pops the last redirection by ui_out_redirect
329 with NULL parameter. */
332 make_cleanup_ui_out_redirect_pop (struct ui_out
*uiout
)
334 return make_my_cleanup (&cleanup_chain
, do_ui_out_redirect_pop
, uiout
);
338 do_free_section_addr_info (void *arg
)
340 free_section_addr_info (arg
);
344 make_cleanup_free_section_addr_info (struct section_addr_info
*addrs
)
346 return make_my_cleanup (&cleanup_chain
, do_free_section_addr_info
, addrs
);
349 struct restore_integer_closure
356 restore_integer (void *p
)
358 struct restore_integer_closure
*closure
= p
;
360 *(closure
->variable
) = closure
->value
;
363 /* Remember the current value of *VARIABLE and make it restored when
364 the cleanup is run. */
367 make_cleanup_restore_integer (int *variable
)
369 struct restore_integer_closure
*c
=
370 xmalloc (sizeof (struct restore_integer_closure
));
372 c
->variable
= variable
;
373 c
->value
= *variable
;
375 return make_my_cleanup2 (&cleanup_chain
, restore_integer
, (void *)c
,
379 /* Remember the current value of *VARIABLE and make it restored when
380 the cleanup is run. */
383 make_cleanup_restore_uinteger (unsigned int *variable
)
385 return make_cleanup_restore_integer ((int *) variable
);
388 /* Helper for make_cleanup_unpush_target. */
391 do_unpush_target (void *arg
)
393 struct target_ops
*ops
= arg
;
398 /* Return a new cleanup that unpushes OPS. */
401 make_cleanup_unpush_target (struct target_ops
*ops
)
403 return make_my_cleanup (&cleanup_chain
, do_unpush_target
, ops
);
406 struct restore_ui_file_closure
408 struct ui_file
**variable
;
409 struct ui_file
*value
;
413 do_restore_ui_file (void *p
)
415 struct restore_ui_file_closure
*closure
= p
;
417 *(closure
->variable
) = closure
->value
;
420 /* Remember the current value of *VARIABLE and make it restored when
421 the cleanup is run. */
424 make_cleanup_restore_ui_file (struct ui_file
**variable
)
426 struct restore_ui_file_closure
*c
= XNEW (struct restore_ui_file_closure
);
428 c
->variable
= variable
;
429 c
->value
= *variable
;
431 return make_cleanup_dtor (do_restore_ui_file
, (void *) c
, xfree
);
434 /* Helper for make_cleanup_value_free_to_mark. */
437 do_value_free_to_mark (void *value
)
439 value_free_to_mark ((struct value
*) value
);
442 /* Free all values allocated since MARK was obtained by value_mark
443 (except for those released) when the cleanup is run. */
446 make_cleanup_value_free_to_mark (struct value
*mark
)
448 return make_my_cleanup (&cleanup_chain
, do_value_free_to_mark
, mark
);
452 make_my_cleanup2 (struct cleanup
**pmy_chain
, make_cleanup_ftype
*function
,
453 void *arg
, void (*free_arg
) (void *))
456 = (struct cleanup
*) xmalloc (sizeof (struct cleanup
));
457 struct cleanup
*old_chain
= *pmy_chain
;
459 new->next
= *pmy_chain
;
460 new->function
= function
;
461 new->free_arg
= free_arg
;
469 make_my_cleanup (struct cleanup
**pmy_chain
, make_cleanup_ftype
*function
,
472 return make_my_cleanup2 (pmy_chain
, function
, arg
, NULL
);
475 /* Discard cleanups and do the actions they describe
476 until we get back to the point OLD_CHAIN in the cleanup_chain. */
479 do_cleanups (struct cleanup
*old_chain
)
481 do_my_cleanups (&cleanup_chain
, old_chain
);
485 do_final_cleanups (struct cleanup
*old_chain
)
487 do_my_cleanups (&final_cleanup_chain
, old_chain
);
491 do_my_cleanups (struct cleanup
**pmy_chain
,
492 struct cleanup
*old_chain
)
496 while ((ptr
= *pmy_chain
) != old_chain
)
498 *pmy_chain
= ptr
->next
; /* Do this first in case of recursion. */
499 (*ptr
->function
) (ptr
->arg
);
501 (*ptr
->free_arg
) (ptr
->arg
);
506 /* Discard cleanups, not doing the actions they describe,
507 until we get back to the point OLD_CHAIN in the cleanup_chain. */
510 discard_cleanups (struct cleanup
*old_chain
)
512 discard_my_cleanups (&cleanup_chain
, old_chain
);
516 discard_final_cleanups (struct cleanup
*old_chain
)
518 discard_my_cleanups (&final_cleanup_chain
, old_chain
);
522 discard_my_cleanups (struct cleanup
**pmy_chain
,
523 struct cleanup
*old_chain
)
527 while ((ptr
= *pmy_chain
) != old_chain
)
529 *pmy_chain
= ptr
->next
;
531 (*ptr
->free_arg
) (ptr
->arg
);
536 /* Set the cleanup_chain to 0, and return the old cleanup chain. */
540 return save_my_cleanups (&cleanup_chain
);
544 save_final_cleanups (void)
546 return save_my_cleanups (&final_cleanup_chain
);
550 save_my_cleanups (struct cleanup
**pmy_chain
)
552 struct cleanup
*old_chain
= *pmy_chain
;
558 /* Restore the cleanup chain from a previously saved chain. */
560 restore_cleanups (struct cleanup
*chain
)
562 restore_my_cleanups (&cleanup_chain
, chain
);
566 restore_final_cleanups (struct cleanup
*chain
)
568 restore_my_cleanups (&final_cleanup_chain
, chain
);
572 restore_my_cleanups (struct cleanup
**pmy_chain
, struct cleanup
*chain
)
577 /* This function is useful for cleanups.
581 old_chain = make_cleanup (free_current_contents, &foo);
583 to arrange to free the object thus allocated. */
586 free_current_contents (void *ptr
)
588 void **location
= ptr
;
590 if (location
== NULL
)
591 internal_error (__FILE__
, __LINE__
,
592 _("free_current_contents: NULL pointer"));
593 if (*location
!= NULL
)
600 /* Provide a known function that does nothing, to use as a base for
601 a possibly long chain of cleanups. This is useful where we
602 use the cleanup chain for handling normal cleanups as well as dealing
603 with cleanups that need to be done as a result of a call to error().
604 In such cases, we may not be certain where the first cleanup is, unless
605 we have a do-nothing one to always use as the base. */
608 null_cleanup (void *arg
)
612 /* If nonzero, display time usage both at startup and for each command. */
614 static int display_time
;
616 /* If nonzero, display space usage both at startup and for each command. */
618 static int display_space
;
620 /* Records a run time and space usage to be used as a base for
621 reporting elapsed time or change in space. In addition,
622 the msg_type field indicates whether the saved time is from the
623 beginning of GDB execution (0) or the beginning of an individual
624 command execution (1). */
632 /* Set whether to display time statistics to NEW_VALUE (non-zero
635 set_display_time (int new_value
)
637 display_time
= new_value
;
640 /* Set whether to display space statistics to NEW_VALUE (non-zero
643 set_display_space (int new_value
)
645 display_space
= new_value
;
648 /* As indicated by display_time and display_space, report GDB's elapsed time
649 and space usage from the base time and space provided in ARG, which
650 must be a pointer to a struct cmd_stat. This function is intended
651 to be called as a cleanup. */
653 report_command_stats (void *arg
)
655 struct cmd_stats
*start_stats
= (struct cmd_stats
*) arg
;
656 int msg_type
= start_stats
->msg_type
;
660 long cmd_time
= get_run_time () - start_stats
->start_time
;
662 printf_unfiltered (msg_type
== 0
663 ? _("Startup time: %ld.%06ld\n")
664 : _("Command execution time: %ld.%06ld\n"),
665 cmd_time
/ 1000000, cmd_time
% 1000000);
671 char *lim
= (char *) sbrk (0);
673 long space_now
= lim
- lim_at_start
;
674 long space_diff
= space_now
- start_stats
->start_space
;
676 printf_unfiltered (msg_type
== 0
677 ? _("Space used: %ld (%s%ld during startup)\n")
678 : _("Space used: %ld (%s%ld for this command)\n"),
680 (space_diff
>= 0 ? "+" : ""),
686 /* Create a cleanup that reports time and space used since its
687 creation. Precise messages depend on MSG_TYPE:
688 0: Initial time/space
689 1: Individual command time/space. */
691 make_command_stats_cleanup (int msg_type
)
693 struct cmd_stats
*new_stat
= XMALLOC (struct cmd_stats
);
696 char *lim
= (char *) sbrk (0);
697 new_stat
->start_space
= lim
- lim_at_start
;
700 new_stat
->msg_type
= msg_type
;
701 new_stat
->start_time
= get_run_time ();
703 return make_cleanup_dtor (report_command_stats
, new_stat
, xfree
);
706 /* Continuations are implemented as cleanups internally. Inherit from
713 /* Add a continuation to the continuation list of THREAD. The new
714 continuation will be added at the front. */
716 add_continuation (struct thread_info
*thread
,
717 void (*continuation_hook
) (void *), void *args
,
718 void (*continuation_free_args
) (void *))
720 struct cleanup
*as_cleanup
= &thread
->continuations
->base
;
721 make_cleanup_ftype
*continuation_hook_fn
= continuation_hook
;
723 make_my_cleanup2 (&as_cleanup
,
724 continuation_hook_fn
,
726 continuation_free_args
);
728 thread
->continuations
= (struct continuation
*) as_cleanup
;
731 /* Add a continuation to the continuation list of INFERIOR. The new
732 continuation will be added at the front. */
735 add_inferior_continuation (void (*continuation_hook
) (void *), void *args
,
736 void (*continuation_free_args
) (void *))
738 struct inferior
*inf
= current_inferior ();
739 struct cleanup
*as_cleanup
= &inf
->continuations
->base
;
740 make_cleanup_ftype
*continuation_hook_fn
= continuation_hook
;
742 make_my_cleanup2 (&as_cleanup
,
743 continuation_hook_fn
,
745 continuation_free_args
);
747 inf
->continuations
= (struct continuation
*) as_cleanup
;
750 /* Do all continuations of the current inferior. */
753 do_all_inferior_continuations (void)
755 struct cleanup
*as_cleanup
;
756 struct inferior
*inf
= current_inferior ();
758 if (inf
->continuations
== NULL
)
761 /* Copy the list header into another pointer, and set the global
762 list header to null, so that the global list can change as a side
763 effect of invoking the continuations and the processing of the
764 preexisting continuations will not be affected. */
766 as_cleanup
= &inf
->continuations
->base
;
767 inf
->continuations
= NULL
;
769 /* Work now on the list we have set aside. */
770 do_my_cleanups (&as_cleanup
, NULL
);
773 /* Get rid of all the inferior-wide continuations of INF. */
776 discard_all_inferior_continuations (struct inferior
*inf
)
778 struct cleanup
*continuation_ptr
= &inf
->continuations
->base
;
780 discard_my_cleanups (&continuation_ptr
, NULL
);
781 inf
->continuations
= NULL
;
785 restore_thread_cleanup (void *arg
)
787 ptid_t
*ptid_p
= arg
;
789 switch_to_thread (*ptid_p
);
792 /* Walk down the continuation list of PTID, and execute all the
793 continuations. There is a problem though. In some cases new
794 continuations may be added while we are in the middle of this loop.
795 If this happens they will be added in the front, and done before we
796 have a chance of exhausting those that were already there. We need
797 to then save the beginning of the list in a pointer and do the
798 continuations from there on, instead of using the global beginning
799 of list as our iteration pointer. */
801 do_all_continuations_ptid (ptid_t ptid
,
802 struct continuation
**continuations_p
)
804 struct cleanup
*old_chain
;
805 ptid_t current_thread
;
806 struct cleanup
*as_cleanup
;
808 if (*continuations_p
== NULL
)
811 current_thread
= inferior_ptid
;
813 /* Restore selected thread on exit. Don't try to restore the frame
816 - When running continuations, the selected frame is always #0.
818 - The continuations may trigger symbol file loads, which may
819 change the frame layout (frame ids change), which would trigger
820 a warning if we used make_cleanup_restore_current_thread. */
822 old_chain
= make_cleanup (restore_thread_cleanup
, ¤t_thread
);
824 /* Let the continuation see this thread as selected. */
825 switch_to_thread (ptid
);
827 /* Copy the list header into another pointer, and set the global
828 list header to null, so that the global list can change as a side
829 effect of invoking the continuations and the processing of the
830 preexisting continuations will not be affected. */
832 as_cleanup
= &(*continuations_p
)->base
;
833 *continuations_p
= NULL
;
835 /* Work now on the list we have set aside. */
836 do_my_cleanups (&as_cleanup
, NULL
);
838 do_cleanups (old_chain
);
841 /* Callback for iterate over threads. */
843 do_all_continuations_thread_callback (struct thread_info
*thread
, void *data
)
845 do_all_continuations_ptid (thread
->ptid
, &thread
->continuations
);
849 /* Do all continuations of thread THREAD. */
851 do_all_continuations_thread (struct thread_info
*thread
)
853 do_all_continuations_thread_callback (thread
, NULL
);
856 /* Do all continuations of all threads. */
858 do_all_continuations (void)
860 iterate_over_threads (do_all_continuations_thread_callback
, NULL
);
863 /* Callback for iterate over threads. */
865 discard_all_continuations_thread_callback (struct thread_info
*thread
,
868 struct cleanup
*continuation_ptr
= &thread
->continuations
->base
;
870 discard_my_cleanups (&continuation_ptr
, NULL
);
871 thread
->continuations
= NULL
;
875 /* Get rid of all the continuations of THREAD. */
877 discard_all_continuations_thread (struct thread_info
*thread
)
879 discard_all_continuations_thread_callback (thread
, NULL
);
882 /* Get rid of all the continuations of all threads. */
884 discard_all_continuations (void)
886 iterate_over_threads (discard_all_continuations_thread_callback
, NULL
);
890 /* Add a continuation to the intermediate continuation list of THREAD.
891 The new continuation will be added at the front. */
893 add_intermediate_continuation (struct thread_info
*thread
,
894 void (*continuation_hook
)
895 (void *), void *args
,
896 void (*continuation_free_args
) (void *))
898 struct cleanup
*as_cleanup
= &thread
->intermediate_continuations
->base
;
899 make_cleanup_ftype
*continuation_hook_fn
= continuation_hook
;
901 make_my_cleanup2 (&as_cleanup
,
902 continuation_hook_fn
,
904 continuation_free_args
);
906 thread
->intermediate_continuations
= (struct continuation
*) as_cleanup
;
909 /* Walk down the cmd_continuation list, and execute all the
910 continuations. There is a problem though. In some cases new
911 continuations may be added while we are in the middle of this
912 loop. If this happens they will be added in the front, and done
913 before we have a chance of exhausting those that were already
914 there. We need to then save the beginning of the list in a pointer
915 and do the continuations from there on, instead of using the
916 global beginning of list as our iteration pointer. */
918 do_all_intermediate_continuations_thread_callback (struct thread_info
*thread
,
921 do_all_continuations_ptid (thread
->ptid
,
922 &thread
->intermediate_continuations
);
926 /* Do all intermediate continuations of thread THREAD. */
928 do_all_intermediate_continuations_thread (struct thread_info
*thread
)
930 do_all_intermediate_continuations_thread_callback (thread
, NULL
);
933 /* Do all intermediate continuations of all threads. */
935 do_all_intermediate_continuations (void)
937 iterate_over_threads (do_all_intermediate_continuations_thread_callback
,
941 /* Callback for iterate over threads. */
943 discard_all_intermediate_continuations_thread_callback (struct thread_info
*thread
,
946 struct cleanup
*continuation_ptr
= &thread
->intermediate_continuations
->base
;
948 discard_my_cleanups (&continuation_ptr
, NULL
);
949 thread
->intermediate_continuations
= NULL
;
953 /* Get rid of all the intermediate continuations of THREAD. */
955 discard_all_intermediate_continuations_thread (struct thread_info
*thread
)
957 discard_all_intermediate_continuations_thread_callback (thread
, NULL
);
960 /* Get rid of all the intermediate continuations of all threads. */
962 discard_all_intermediate_continuations (void)
964 iterate_over_threads (discard_all_intermediate_continuations_thread_callback
,
970 /* Print a warning message. The first argument STRING is the warning
971 message, used as an fprintf format string, the second is the
972 va_list of arguments for that string. A warning is unfiltered (not
973 paginated) so that the user does not need to page through each
974 screen full of warnings when there are lots of them. */
977 vwarning (const char *string
, va_list args
)
979 if (deprecated_warning_hook
)
980 (*deprecated_warning_hook
) (string
, args
);
983 target_terminal_ours ();
984 wrap_here (""); /* Force out any buffered output. */
985 gdb_flush (gdb_stdout
);
986 if (warning_pre_print
)
987 fputs_unfiltered (warning_pre_print
, gdb_stderr
);
988 vfprintf_unfiltered (gdb_stderr
, string
, args
);
989 fprintf_unfiltered (gdb_stderr
, "\n");
994 /* Print a warning message.
995 The first argument STRING is the warning message, used as a fprintf string,
996 and the remaining args are passed as arguments to it.
997 The primary difference between warnings and errors is that a warning
998 does not force the return to command level. */
1001 warning (const char *string
, ...)
1005 va_start (args
, string
);
1006 vwarning (string
, args
);
1010 /* Print an error message and return to command level.
1011 The first argument STRING is the error message, used as a fprintf string,
1012 and the remaining args are passed as arguments to it. */
1015 verror (const char *string
, va_list args
)
1017 throw_verror (GENERIC_ERROR
, string
, args
);
1021 error (const char *string
, ...)
1025 va_start (args
, string
);
1026 throw_verror (GENERIC_ERROR
, string
, args
);
1030 /* Print an error message and quit.
1031 The first argument STRING is the error message, used as a fprintf string,
1032 and the remaining args are passed as arguments to it. */
1035 vfatal (const char *string
, va_list args
)
1037 throw_vfatal (string
, args
);
1041 fatal (const char *string
, ...)
1045 va_start (args
, string
);
1046 throw_vfatal (string
, args
);
1051 error_stream (struct ui_file
*stream
)
1053 char *message
= ui_file_xstrdup (stream
, NULL
);
1055 make_cleanup (xfree
, message
);
1056 error (("%s"), message
);
1059 /* Dump core trying to increase the core soft limit to hard limit first. */
1064 #ifdef HAVE_SETRLIMIT
1065 struct rlimit rlim
= { RLIM_INFINITY
, RLIM_INFINITY
};
1067 setrlimit (RLIMIT_CORE
, &rlim
);
1068 #endif /* HAVE_SETRLIMIT */
1070 abort (); /* NOTE: GDB has only three calls to abort(). */
1073 /* Check whether GDB will be able to dump core using the dump_core
1077 can_dump_core (const char *reason
)
1079 #ifdef HAVE_GETRLIMIT
1082 /* Be quiet and assume we can dump if an error is returned. */
1083 if (getrlimit (RLIMIT_CORE
, &rlim
) != 0)
1086 if (rlim
.rlim_max
== 0)
1088 fprintf_unfiltered (gdb_stderr
,
1089 _("%s\nUnable to dump core, use `ulimit -c"
1090 " unlimited' before executing GDB next time.\n"),
1094 #endif /* HAVE_GETRLIMIT */
1099 /* Allow the user to configure the debugger behavior with respect to
1100 what to do when an internal problem is detected. */
1102 const char internal_problem_ask
[] = "ask";
1103 const char internal_problem_yes
[] = "yes";
1104 const char internal_problem_no
[] = "no";
1105 static const char *internal_problem_modes
[] =
1107 internal_problem_ask
,
1108 internal_problem_yes
,
1109 internal_problem_no
,
1113 /* Print a message reporting an internal error/warning. Ask the user
1114 if they want to continue, dump core, or just exit. Return
1115 something to indicate a quit. */
1117 struct internal_problem
1120 const char *should_quit
;
1121 const char *should_dump_core
;
1124 /* Report a problem, internal to GDB, to the user. Once the problem
1125 has been reported, and assuming GDB didn't quit, the caller can
1126 either allow execution to resume or throw an error. */
1128 static void ATTRIBUTE_PRINTF (4, 0)
1129 internal_vproblem (struct internal_problem
*problem
,
1130 const char *file
, int line
, const char *fmt
, va_list ap
)
1137 /* Don't allow infinite error/warning recursion. */
1139 static char msg
[] = "Recursive internal problem.\n";
1148 fputs_unfiltered (msg
, gdb_stderr
);
1149 abort (); /* NOTE: GDB has only three calls to abort(). */
1152 /* Newer GLIBC versions put the warn_unused_result attribute
1153 on write, but this is one of those rare cases where
1154 ignoring the return value is correct. Casting to (void)
1155 does not fix this problem. This is the solution suggested
1156 at http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25509. */
1157 if (write (STDERR_FILENO
, msg
, sizeof (msg
)) != sizeof (msg
))
1158 abort (); /* NOTE: GDB has only three calls to abort(). */
1163 /* Try to get the message out and at the start of a new line. */
1164 target_terminal_ours ();
1167 /* Create a string containing the full error/warning message. Need
1168 to call query with this full string, as otherwize the reason
1169 (error/warning) and question become separated. Format using a
1170 style similar to a compiler error message. Include extra detail
1171 so that the user knows that they are living on the edge. */
1175 msg
= xstrvprintf (fmt
, ap
);
1176 reason
= xstrprintf ("%s:%d: %s: %s\n"
1177 "A problem internal to GDB has been detected,\n"
1178 "further debugging may prove unreliable.",
1179 file
, line
, problem
->name
, msg
);
1181 make_cleanup (xfree
, reason
);
1184 if (problem
->should_quit
== internal_problem_ask
)
1186 /* Default (yes/batch case) is to quit GDB. When in batch mode
1187 this lessens the likelihood of GDB going into an infinite
1191 /* Emit the message and quit. */
1192 fputs_unfiltered (reason
, gdb_stderr
);
1193 fputs_unfiltered ("\n", gdb_stderr
);
1197 quit_p
= query (_("%s\nQuit this debugging session? "), reason
);
1199 else if (problem
->should_quit
== internal_problem_yes
)
1201 else if (problem
->should_quit
== internal_problem_no
)
1204 internal_error (__FILE__
, __LINE__
, _("bad switch"));
1206 if (problem
->should_dump_core
== internal_problem_ask
)
1208 if (!can_dump_core (reason
))
1212 /* Default (yes/batch case) is to dump core. This leaves a GDB
1213 `dropping' so that it is easier to see that something went
1215 dump_core_p
= query (_("%s\nCreate a core file of GDB? "), reason
);
1218 else if (problem
->should_dump_core
== internal_problem_yes
)
1219 dump_core_p
= can_dump_core (reason
);
1220 else if (problem
->should_dump_core
== internal_problem_no
)
1223 internal_error (__FILE__
, __LINE__
, _("bad switch"));
1236 #ifdef HAVE_WORKING_FORK
1246 static struct internal_problem internal_error_problem
= {
1247 "internal-error", internal_problem_ask
, internal_problem_ask
1251 internal_verror (const char *file
, int line
, const char *fmt
, va_list ap
)
1253 internal_vproblem (&internal_error_problem
, file
, line
, fmt
, ap
);
1254 deprecated_throw_reason (RETURN_ERROR
);
1258 internal_error (const char *file
, int line
, const char *string
, ...)
1262 va_start (ap
, string
);
1263 internal_verror (file
, line
, string
, ap
);
1267 static struct internal_problem internal_warning_problem
= {
1268 "internal-warning", internal_problem_ask
, internal_problem_ask
1272 internal_vwarning (const char *file
, int line
, const char *fmt
, va_list ap
)
1274 internal_vproblem (&internal_warning_problem
, file
, line
, fmt
, ap
);
1278 internal_warning (const char *file
, int line
, const char *string
, ...)
1282 va_start (ap
, string
);
1283 internal_vwarning (file
, line
, string
, ap
);
1287 /* Dummy functions to keep add_prefix_cmd happy. */
1290 set_internal_problem_cmd (char *args
, int from_tty
)
1295 show_internal_problem_cmd (char *args
, int from_tty
)
1299 /* When GDB reports an internal problem (error or warning) it gives
1300 the user the opportunity to quit GDB and/or create a core file of
1301 the current debug session. This function registers a few commands
1302 that make it possible to specify that GDB should always or never
1303 quit or create a core file, without asking. The commands look
1306 maint set PROBLEM-NAME quit ask|yes|no
1307 maint show PROBLEM-NAME quit
1308 maint set PROBLEM-NAME corefile ask|yes|no
1309 maint show PROBLEM-NAME corefile
1311 Where PROBLEM-NAME is currently "internal-error" or
1312 "internal-warning". */
1315 add_internal_problem_command (struct internal_problem
*problem
)
1317 struct cmd_list_element
**set_cmd_list
;
1318 struct cmd_list_element
**show_cmd_list
;
1322 set_cmd_list
= xmalloc (sizeof (*set_cmd_list
));
1323 show_cmd_list
= xmalloc (sizeof (*set_cmd_list
));
1324 *set_cmd_list
= NULL
;
1325 *show_cmd_list
= NULL
;
1327 set_doc
= xstrprintf (_("Configure what GDB does when %s is detected."),
1330 show_doc
= xstrprintf (_("Show what GDB does when %s is detected."),
1333 add_prefix_cmd ((char*) problem
->name
,
1334 class_maintenance
, set_internal_problem_cmd
, set_doc
,
1336 concat ("maintenance set ", problem
->name
, " ",
1338 0/*allow-unknown*/, &maintenance_set_cmdlist
);
1340 add_prefix_cmd ((char*) problem
->name
,
1341 class_maintenance
, show_internal_problem_cmd
, show_doc
,
1343 concat ("maintenance show ", problem
->name
, " ",
1345 0/*allow-unknown*/, &maintenance_show_cmdlist
);
1347 set_doc
= xstrprintf (_("Set whether GDB should quit "
1348 "when an %s is detected"),
1350 show_doc
= xstrprintf (_("Show whether GDB will quit "
1351 "when an %s is detected"),
1353 add_setshow_enum_cmd ("quit", class_maintenance
,
1354 internal_problem_modes
,
1355 &problem
->should_quit
,
1358 NULL
, /* help_doc */
1360 NULL
, /* showfunc */
1367 set_doc
= xstrprintf (_("Set whether GDB should create a core "
1368 "file of GDB when %s is detected"),
1370 show_doc
= xstrprintf (_("Show whether GDB will create a core "
1371 "file of GDB when %s is detected"),
1373 add_setshow_enum_cmd ("corefile", class_maintenance
,
1374 internal_problem_modes
,
1375 &problem
->should_dump_core
,
1378 NULL
, /* help_doc */
1380 NULL
, /* showfunc */
1388 /* Print the system error message for errno, and also mention STRING
1389 as the file name for which the error was encountered.
1390 Then return to command level. */
1393 perror_with_name (const char *string
)
1398 err
= safe_strerror (errno
);
1399 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
1400 strcpy (combined
, string
);
1401 strcat (combined
, ": ");
1402 strcat (combined
, err
);
1404 /* I understand setting these is a matter of taste. Still, some people
1405 may clear errno but not know about bfd_error. Doing this here is not
1407 bfd_set_error (bfd_error_no_error
);
1410 error (_("%s."), combined
);
1413 /* Print the system error message for ERRCODE, and also mention STRING
1414 as the file name for which the error was encountered. */
1417 print_sys_errmsg (const char *string
, int errcode
)
1422 err
= safe_strerror (errcode
);
1423 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
1424 strcpy (combined
, string
);
1425 strcat (combined
, ": ");
1426 strcat (combined
, err
);
1428 /* We want anything which was printed on stdout to come out first, before
1430 gdb_flush (gdb_stdout
);
1431 fprintf_unfiltered (gdb_stderr
, "%s.\n", combined
);
1434 /* Control C eventually causes this to be called, at a convenient time. */
1440 /* No steenking SIGINT will ever be coming our way when the
1441 program is resumed. Don't lie. */
1445 /* If there is no terminal switching for this target, then we can't
1446 possibly get screwed by the lack of job control. */
1447 || current_target
.to_terminal_ours
== NULL
)
1450 fatal ("Quit (expect signal SIGINT when the program is resumed)");
1455 /* Called when a memory allocation fails, with the number of bytes of
1456 memory requested in SIZE. */
1463 internal_error (__FILE__
, __LINE__
,
1464 _("virtual memory exhausted: can't allocate %ld bytes."),
1469 internal_error (__FILE__
, __LINE__
, _("virtual memory exhausted."));
1473 /* The xmalloc() (libiberty.h) family of memory management routines.
1475 These are like the ISO-C malloc() family except that they implement
1476 consistent semantics and guard against typical memory management
1479 /* NOTE: These are declared using PTR to ensure consistency with
1480 "libiberty.h". xfree() is GDB local. */
1483 xmalloc (size_t size
)
1487 /* See libiberty/xmalloc.c. This function need's to match that's
1488 semantics. It never returns NULL. */
1492 val
= malloc (size
); /* ARI: malloc */
1500 xzalloc (size_t size
)
1502 return xcalloc (1, size
);
1506 xrealloc (PTR ptr
, size_t size
) /* ARI: PTR */
1510 /* See libiberty/xmalloc.c. This function need's to match that's
1511 semantics. It never returns NULL. */
1516 val
= realloc (ptr
, size
); /* ARI: realloc */
1518 val
= malloc (size
); /* ARI: malloc */
1526 xcalloc (size_t number
, size_t size
)
1530 /* See libiberty/xmalloc.c. This function need's to match that's
1531 semantics. It never returns NULL. */
1532 if (number
== 0 || size
== 0)
1538 mem
= calloc (number
, size
); /* ARI: xcalloc */
1540 nomem (number
* size
);
1549 free (ptr
); /* ARI: free */
1553 /* Like asprintf/vasprintf but get an internal_error if the call
1557 xstrprintf (const char *format
, ...)
1562 va_start (args
, format
);
1563 ret
= xstrvprintf (format
, args
);
1569 xasprintf (char **ret
, const char *format
, ...)
1573 va_start (args
, format
);
1574 (*ret
) = xstrvprintf (format
, args
);
1579 xvasprintf (char **ret
, const char *format
, va_list ap
)
1581 (*ret
) = xstrvprintf (format
, ap
);
1585 xstrvprintf (const char *format
, va_list ap
)
1588 int status
= vasprintf (&ret
, format
, ap
);
1590 /* NULL is returned when there was a memory allocation problem, or
1591 any other error (for instance, a bad format string). A negative
1592 status (the printed length) with a non-NULL buffer should never
1593 happen, but just to be sure. */
1594 if (ret
== NULL
|| status
< 0)
1595 internal_error (__FILE__
, __LINE__
, _("vasprintf call failed"));
1600 xsnprintf (char *str
, size_t size
, const char *format
, ...)
1605 va_start (args
, format
);
1606 ret
= vsnprintf (str
, size
, format
, args
);
1607 gdb_assert (ret
< size
);
1613 /* My replacement for the read system call.
1614 Used like `read' but keeps going if `read' returns too soon. */
1617 myread (int desc
, char *addr
, int len
)
1624 val
= read (desc
, addr
, len
);
1628 return orglen
- len
;
1635 /* Make a copy of the string at PTR with SIZE characters
1636 (and add a null character at the end in the copy).
1637 Uses malloc to get the space. Returns the address of the copy. */
1640 savestring (const char *ptr
, size_t size
)
1642 char *p
= (char *) xmalloc (size
+ 1);
1644 memcpy (p
, ptr
, size
);
1650 print_spaces (int n
, struct ui_file
*file
)
1652 fputs_unfiltered (n_spaces (n
), file
);
1655 /* Print a host address. */
1658 gdb_print_host_address (const void *addr
, struct ui_file
*stream
)
1660 fprintf_filtered (stream
, "%s", host_address_to_string (addr
));
1664 /* A cleanup function that calls regfree. */
1667 do_regfree_cleanup (void *r
)
1672 /* Create a new cleanup that frees the compiled regular expression R. */
1675 make_regfree_cleanup (regex_t
*r
)
1677 return make_cleanup (do_regfree_cleanup
, r
);
1680 /* Return an xmalloc'd error message resulting from a regular
1681 expression compilation failure. */
1684 get_regcomp_error (int code
, regex_t
*rx
)
1686 size_t length
= regerror (code
, rx
, NULL
, 0);
1687 char *result
= xmalloc (length
);
1689 regerror (code
, rx
, result
, length
);
1695 /* This function supports the query, nquery, and yquery functions.
1696 Ask user a y-or-n question and return 0 if answer is no, 1 if
1697 answer is yes, or default the answer to the specified default
1698 (for yquery or nquery). DEFCHAR may be 'y' or 'n' to provide a
1699 default answer, or '\0' for no default.
1700 CTLSTR is the control string and should end in "? ". It should
1701 not say how to answer, because we do that.
1702 ARGS are the arguments passed along with the CTLSTR argument to
1705 static int ATTRIBUTE_PRINTF (1, 0)
1706 defaulted_query (const char *ctlstr
, const char defchar
, va_list args
)
1712 char def_answer
, not_def_answer
;
1713 char *y_string
, *n_string
, *question
;
1715 /* Set up according to which answer is the default. */
1716 if (defchar
== '\0')
1720 not_def_answer
= 'N';
1724 else if (defchar
== 'y')
1728 not_def_answer
= 'N';
1736 not_def_answer
= 'Y';
1741 /* Automatically answer the default value if the user did not want
1742 prompts or the command was issued with the server prefix. */
1743 if (! caution
|| server_command
)
1746 /* If input isn't coming from the user directly, just say what
1747 question we're asking, and then answer the default automatically. This
1748 way, important error messages don't get lost when talking to GDB
1750 if (! input_from_terminal_p ())
1753 vfprintf_filtered (gdb_stdout
, ctlstr
, args
);
1755 printf_filtered (_("(%s or %s) [answered %c; "
1756 "input not from terminal]\n"),
1757 y_string
, n_string
, def_answer
);
1758 gdb_flush (gdb_stdout
);
1763 if (deprecated_query_hook
)
1765 return deprecated_query_hook (ctlstr
, args
);
1768 /* Format the question outside of the loop, to avoid reusing args. */
1769 question
= xstrvprintf (ctlstr
, args
);
1773 wrap_here (""); /* Flush any buffered output. */
1774 gdb_flush (gdb_stdout
);
1776 if (annotation_level
> 1)
1777 printf_filtered (("\n\032\032pre-query\n"));
1779 fputs_filtered (question
, gdb_stdout
);
1780 printf_filtered (_("(%s or %s) "), y_string
, n_string
);
1782 if (annotation_level
> 1)
1783 printf_filtered (("\n\032\032query\n"));
1786 gdb_flush (gdb_stdout
);
1788 answer
= fgetc (stdin
);
1790 /* We expect fgetc to block until a character is read. But
1791 this may not be the case if the terminal was opened with
1792 the NONBLOCK flag. In that case, if there is nothing to
1793 read on stdin, fgetc returns EOF, but also sets the error
1794 condition flag on stdin and errno to EAGAIN. With a true
1795 EOF, stdin's error condition flag is not set.
1797 A situation where this behavior was observed is a pseudo
1799 while (answer
== EOF
&& ferror (stdin
) && errno
== EAGAIN
)
1801 /* Not a real EOF. Wait a little while and try again until
1802 we read something. */
1805 answer
= fgetc (stdin
);
1808 clearerr (stdin
); /* in case of C-d */
1809 if (answer
== EOF
) /* C-d */
1811 printf_filtered ("EOF [assumed %c]\n", def_answer
);
1815 /* Eat rest of input line, to EOF or newline. */
1819 ans2
= fgetc (stdin
);
1822 while (ans2
!= EOF
&& ans2
!= '\n' && ans2
!= '\r');
1826 /* Check answer. For the non-default, the user must specify
1827 the non-default explicitly. */
1828 if (answer
== not_def_answer
)
1830 retval
= !def_value
;
1833 /* Otherwise, if a default was specified, the user may either
1834 specify the required input or have it default by entering
1836 if (answer
== def_answer
1837 || (defchar
!= '\0' &&
1838 (answer
== '\n' || answer
== '\r' || answer
== EOF
)))
1843 /* Invalid entries are not defaulted and require another selection. */
1844 printf_filtered (_("Please answer %s or %s.\n"),
1845 y_string
, n_string
);
1849 if (annotation_level
> 1)
1850 printf_filtered (("\n\032\032post-query\n"));
1855 /* Ask user a y-or-n question and return 0 if answer is no, 1 if
1856 answer is yes, or 0 if answer is defaulted.
1857 Takes three args which are given to printf to print the question.
1858 The first, a control string, should end in "? ".
1859 It should not say how to answer, because we do that. */
1862 nquery (const char *ctlstr
, ...)
1867 va_start (args
, ctlstr
);
1868 ret
= defaulted_query (ctlstr
, 'n', args
);
1873 /* Ask user a y-or-n question and return 0 if answer is no, 1 if
1874 answer is yes, or 1 if answer is defaulted.
1875 Takes three args which are given to printf to print the question.
1876 The first, a control string, should end in "? ".
1877 It should not say how to answer, because we do that. */
1880 yquery (const char *ctlstr
, ...)
1885 va_start (args
, ctlstr
);
1886 ret
= defaulted_query (ctlstr
, 'y', args
);
1891 /* Ask user a y-or-n question and return 1 iff answer is yes.
1892 Takes three args which are given to printf to print the question.
1893 The first, a control string, should end in "? ".
1894 It should not say how to answer, because we do that. */
1897 query (const char *ctlstr
, ...)
1902 va_start (args
, ctlstr
);
1903 ret
= defaulted_query (ctlstr
, '\0', args
);
1908 /* A helper for parse_escape that converts a host character to a
1909 target character. C is the host character. If conversion is
1910 possible, then the target character is stored in *TARGET_C and the
1911 function returns 1. Otherwise, the function returns 0. */
1914 host_char_to_target (struct gdbarch
*gdbarch
, int c
, int *target_c
)
1916 struct obstack host_data
;
1918 struct cleanup
*cleanups
;
1921 obstack_init (&host_data
);
1922 cleanups
= make_cleanup_obstack_free (&host_data
);
1924 convert_between_encodings (target_charset (gdbarch
), host_charset (),
1925 &the_char
, 1, 1, &host_data
, translit_none
);
1927 if (obstack_object_size (&host_data
) == 1)
1930 *target_c
= *(char *) obstack_base (&host_data
);
1933 do_cleanups (cleanups
);
1937 /* Parse a C escape sequence. STRING_PTR points to a variable
1938 containing a pointer to the string to parse. That pointer
1939 should point to the character after the \. That pointer
1940 is updated past the characters we use. The value of the
1941 escape sequence is returned.
1943 A negative value means the sequence \ newline was seen,
1944 which is supposed to be equivalent to nothing at all.
1946 If \ is followed by a null character, we return a negative
1947 value and leave the string pointer pointing at the null character.
1949 If \ is followed by 000, we return 0 and leave the string pointer
1950 after the zeros. A value of 0 does not mean end of string. */
1953 parse_escape (struct gdbarch
*gdbarch
, char **string_ptr
)
1955 int target_char
= -2; /* Initialize to avoid GCC warnings. */
1956 int c
= *(*string_ptr
)++;
1975 int i
= host_hex_value (c
);
1980 if (isdigit (c
) && c
!= '8' && c
!= '9')
1984 i
+= host_hex_value (c
);
2020 if (!host_char_to_target (gdbarch
, c
, &target_char
))
2021 error (_("The escape sequence `\\%c' is equivalent to plain `%c',"
2022 " which has no equivalent\nin the `%s' character set."),
2023 c
, c
, target_charset (gdbarch
));
2027 /* Print the character C on STREAM as part of the contents of a literal
2028 string whose delimiter is QUOTER. Note that this routine should only
2029 be call for printing things which are independent of the language
2030 of the program being debugged. */
2033 printchar (int c
, void (*do_fputs
) (const char *, struct ui_file
*),
2034 void (*do_fprintf
) (struct ui_file
*, const char *, ...)
2035 ATTRIBUTE_FPTR_PRINTF_2
, struct ui_file
*stream
, int quoter
)
2037 c
&= 0xFF; /* Avoid sign bit follies */
2039 if (c
< 0x20 || /* Low control chars */
2040 (c
>= 0x7F && c
< 0xA0) || /* DEL, High controls */
2041 (sevenbit_strings
&& c
>= 0x80))
2042 { /* high order bit set */
2046 do_fputs ("\\n", stream
);
2049 do_fputs ("\\b", stream
);
2052 do_fputs ("\\t", stream
);
2055 do_fputs ("\\f", stream
);
2058 do_fputs ("\\r", stream
);
2061 do_fputs ("\\e", stream
);
2064 do_fputs ("\\a", stream
);
2067 do_fprintf (stream
, "\\%.3o", (unsigned int) c
);
2073 if (c
== '\\' || c
== quoter
)
2074 do_fputs ("\\", stream
);
2075 do_fprintf (stream
, "%c", c
);
2079 /* Print the character C on STREAM as part of the contents of a
2080 literal string whose delimiter is QUOTER. Note that these routines
2081 should only be call for printing things which are independent of
2082 the language of the program being debugged. */
2085 fputstr_filtered (const char *str
, int quoter
, struct ui_file
*stream
)
2088 printchar (*str
++, fputs_filtered
, fprintf_filtered
, stream
, quoter
);
2092 fputstr_unfiltered (const char *str
, int quoter
, struct ui_file
*stream
)
2095 printchar (*str
++, fputs_unfiltered
, fprintf_unfiltered
, stream
, quoter
);
2099 fputstrn_filtered (const char *str
, int n
, int quoter
,
2100 struct ui_file
*stream
)
2104 for (i
= 0; i
< n
; i
++)
2105 printchar (str
[i
], fputs_filtered
, fprintf_filtered
, stream
, quoter
);
2109 fputstrn_unfiltered (const char *str
, int n
, int quoter
,
2110 struct ui_file
*stream
)
2114 for (i
= 0; i
< n
; i
++)
2115 printchar (str
[i
], fputs_unfiltered
, fprintf_unfiltered
, stream
, quoter
);
2119 /* Number of lines per page or UINT_MAX if paging is disabled. */
2120 static unsigned int lines_per_page
;
2122 show_lines_per_page (struct ui_file
*file
, int from_tty
,
2123 struct cmd_list_element
*c
, const char *value
)
2125 fprintf_filtered (file
,
2126 _("Number of lines gdb thinks are in a page is %s.\n"),
2130 /* Number of chars per line or UINT_MAX if line folding is disabled. */
2131 static unsigned int chars_per_line
;
2133 show_chars_per_line (struct ui_file
*file
, int from_tty
,
2134 struct cmd_list_element
*c
, const char *value
)
2136 fprintf_filtered (file
,
2137 _("Number of characters gdb thinks "
2138 "are in a line is %s.\n"),
2142 /* Current count of lines printed on this page, chars on this line. */
2143 static unsigned int lines_printed
, chars_printed
;
2145 /* Buffer and start column of buffered text, for doing smarter word-
2146 wrapping. When someone calls wrap_here(), we start buffering output
2147 that comes through fputs_filtered(). If we see a newline, we just
2148 spit it out and forget about the wrap_here(). If we see another
2149 wrap_here(), we spit it out and remember the newer one. If we see
2150 the end of the line, we spit out a newline, the indent, and then
2151 the buffered output. */
2153 /* Malloc'd buffer with chars_per_line+2 bytes. Contains characters which
2154 are waiting to be output (they have already been counted in chars_printed).
2155 When wrap_buffer[0] is null, the buffer is empty. */
2156 static char *wrap_buffer
;
2158 /* Pointer in wrap_buffer to the next character to fill. */
2159 static char *wrap_pointer
;
2161 /* String to indent by if the wrap occurs. Must not be NULL if wrap_column
2163 static char *wrap_indent
;
2165 /* Column number on the screen where wrap_buffer begins, or 0 if wrapping
2166 is not in effect. */
2167 static int wrap_column
;
2170 /* Inialize the number of lines per page and chars per line. */
2173 init_page_info (void)
2177 lines_per_page
= UINT_MAX
;
2178 chars_per_line
= UINT_MAX
;
2182 if (!tui_get_command_dimension (&chars_per_line
, &lines_per_page
))
2187 #if defined(__GO32__)
2188 rows
= ScreenRows ();
2189 cols
= ScreenCols ();
2190 lines_per_page
= rows
;
2191 chars_per_line
= cols
;
2193 /* Make sure Readline has initialized its terminal settings. */
2194 rl_reset_terminal (NULL
);
2196 /* Get the screen size from Readline. */
2197 rl_get_screen_size (&rows
, &cols
);
2198 lines_per_page
= rows
;
2199 chars_per_line
= cols
;
2201 /* Readline should have fetched the termcap entry for us. */
2202 if (tgetnum ("li") < 0 || getenv ("EMACS"))
2204 /* The number of lines per page is not mentioned in the
2205 terminal description. This probably means that paging is
2206 not useful (e.g. emacs shell window), so disable paging. */
2207 lines_per_page
= UINT_MAX
;
2210 /* FIXME: Get rid of this junk. */
2211 #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER)
2212 SIGWINCH_HANDLER (SIGWINCH
);
2215 /* If the output is not a terminal, don't paginate it. */
2216 if (!ui_file_isatty (gdb_stdout
))
2217 lines_per_page
= UINT_MAX
;
2225 /* Helper for make_cleanup_restore_page_info. */
2228 do_restore_page_info_cleanup (void *arg
)
2234 /* Provide cleanup for restoring the terminal size. */
2237 make_cleanup_restore_page_info (void)
2239 struct cleanup
*back_to
;
2241 back_to
= make_cleanup (do_restore_page_info_cleanup
, NULL
);
2242 make_cleanup_restore_uinteger (&lines_per_page
);
2243 make_cleanup_restore_uinteger (&chars_per_line
);
2248 /* Temporarily set BATCH_FLAG and the associated unlimited terminal size.
2249 Provide cleanup for restoring the original state. */
2252 set_batch_flag_and_make_cleanup_restore_page_info (void)
2254 struct cleanup
*back_to
= make_cleanup_restore_page_info ();
2256 make_cleanup_restore_integer (&batch_flag
);
2263 /* Set the screen size based on LINES_PER_PAGE and CHARS_PER_LINE. */
2266 set_screen_size (void)
2268 int rows
= lines_per_page
;
2269 int cols
= chars_per_line
;
2277 /* Update Readline's idea of the terminal size. */
2278 rl_set_screen_size (rows
, cols
);
2281 /* Reinitialize WRAP_BUFFER according to the current value of
2287 if (chars_per_line
== 0)
2292 wrap_buffer
= (char *) xmalloc (chars_per_line
+ 2);
2293 wrap_buffer
[0] = '\0';
2296 wrap_buffer
= (char *) xrealloc (wrap_buffer
, chars_per_line
+ 2);
2297 wrap_pointer
= wrap_buffer
; /* Start it at the beginning. */
2301 set_width_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
2308 set_height_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
2313 /* Wait, so the user can read what's on the screen. Prompt the user
2314 to continue by pressing RETURN. */
2317 prompt_for_continue (void)
2320 char cont_prompt
[120];
2322 if (annotation_level
> 1)
2323 printf_unfiltered (("\n\032\032pre-prompt-for-continue\n"));
2325 strcpy (cont_prompt
,
2326 "---Type <return> to continue, or q <return> to quit---");
2327 if (annotation_level
> 1)
2328 strcat (cont_prompt
, "\n\032\032prompt-for-continue\n");
2330 /* We must do this *before* we call gdb_readline, else it will eventually
2331 call us -- thinking that we're trying to print beyond the end of the
2333 reinitialize_more_filter ();
2336 /* On a real operating system, the user can quit with SIGINT.
2339 'q' is provided on all systems so users don't have to change habits
2340 from system to system, and because telling them what to do in
2341 the prompt is more user-friendly than expecting them to think of
2343 /* Call readline, not gdb_readline, because GO32 readline handles control-C
2344 whereas control-C to gdb_readline will cause the user to get dumped
2346 ignore
= gdb_readline_wrapper (cont_prompt
);
2348 if (annotation_level
> 1)
2349 printf_unfiltered (("\n\032\032post-prompt-for-continue\n"));
2355 while (*p
== ' ' || *p
== '\t')
2358 async_request_quit (0);
2363 /* Now we have to do this again, so that GDB will know that it doesn't
2364 need to save the ---Type <return>--- line at the top of the screen. */
2365 reinitialize_more_filter ();
2367 dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */
2370 /* Reinitialize filter; ie. tell it to reset to original values. */
2373 reinitialize_more_filter (void)
2379 /* Indicate that if the next sequence of characters overflows the line,
2380 a newline should be inserted here rather than when it hits the end.
2381 If INDENT is non-null, it is a string to be printed to indent the
2382 wrapped part on the next line. INDENT must remain accessible until
2383 the next call to wrap_here() or until a newline is printed through
2386 If the line is already overfull, we immediately print a newline and
2387 the indentation, and disable further wrapping.
2389 If we don't know the width of lines, but we know the page height,
2390 we must not wrap words, but should still keep track of newlines
2391 that were explicitly printed.
2393 INDENT should not contain tabs, as that will mess up the char count
2394 on the next line. FIXME.
2396 This routine is guaranteed to force out any output which has been
2397 squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be
2398 used to force out output from the wrap_buffer. */
2401 wrap_here (char *indent
)
2403 /* This should have been allocated, but be paranoid anyway. */
2405 internal_error (__FILE__
, __LINE__
,
2406 _("failed internal consistency check"));
2410 *wrap_pointer
= '\0';
2411 fputs_unfiltered (wrap_buffer
, gdb_stdout
);
2413 wrap_pointer
= wrap_buffer
;
2414 wrap_buffer
[0] = '\0';
2415 if (chars_per_line
== UINT_MAX
) /* No line overflow checking. */
2419 else if (chars_printed
>= chars_per_line
)
2421 puts_filtered ("\n");
2423 puts_filtered (indent
);
2428 wrap_column
= chars_printed
;
2432 wrap_indent
= indent
;
2436 /* Print input string to gdb_stdout, filtered, with wrap,
2437 arranging strings in columns of n chars. String can be
2438 right or left justified in the column. Never prints
2439 trailing spaces. String should never be longer than
2440 width. FIXME: this could be useful for the EXAMINE
2441 command, which currently doesn't tabulate very well. */
2444 puts_filtered_tabular (char *string
, int width
, int right
)
2450 gdb_assert (chars_per_line
> 0);
2451 if (chars_per_line
== UINT_MAX
)
2453 fputs_filtered (string
, gdb_stdout
);
2454 fputs_filtered ("\n", gdb_stdout
);
2458 if (((chars_printed
- 1) / width
+ 2) * width
>= chars_per_line
)
2459 fputs_filtered ("\n", gdb_stdout
);
2461 if (width
>= chars_per_line
)
2462 width
= chars_per_line
- 1;
2464 stringlen
= strlen (string
);
2466 if (chars_printed
> 0)
2467 spaces
= width
- (chars_printed
- 1) % width
- 1;
2469 spaces
+= width
- stringlen
;
2471 spacebuf
= alloca (spaces
+ 1);
2472 spacebuf
[spaces
] = '\0';
2474 spacebuf
[spaces
] = ' ';
2476 fputs_filtered (spacebuf
, gdb_stdout
);
2477 fputs_filtered (string
, gdb_stdout
);
2481 /* Ensure that whatever gets printed next, using the filtered output
2482 commands, starts at the beginning of the line. I.e. if there is
2483 any pending output for the current line, flush it and start a new
2484 line. Otherwise do nothing. */
2489 if (chars_printed
> 0)
2491 puts_filtered ("\n");
2496 /* Like fputs but if FILTER is true, pause after every screenful.
2498 Regardless of FILTER can wrap at points other than the final
2499 character of a line.
2501 Unlike fputs, fputs_maybe_filtered does not return a value.
2502 It is OK for LINEBUFFER to be NULL, in which case just don't print
2505 Note that a longjmp to top level may occur in this routine (only if
2506 FILTER is true) (since prompt_for_continue may do so) so this
2507 routine should not be called when cleanups are not in place. */
2510 fputs_maybe_filtered (const char *linebuffer
, struct ui_file
*stream
,
2513 const char *lineptr
;
2515 if (linebuffer
== 0)
2518 /* Don't do any filtering if it is disabled. */
2519 if (stream
!= gdb_stdout
2520 || ! pagination_enabled
2521 || ! input_from_terminal_p ()
2522 || (lines_per_page
== UINT_MAX
&& chars_per_line
== UINT_MAX
)
2523 || top_level_interpreter () == NULL
2524 || ui_out_is_mi_like_p (interp_ui_out (top_level_interpreter ())))
2526 fputs_unfiltered (linebuffer
, stream
);
2530 /* Go through and output each character. Show line extension
2531 when this is necessary; prompt user for new page when this is
2534 lineptr
= linebuffer
;
2537 /* Possible new page. */
2538 if (filter
&& (lines_printed
>= lines_per_page
- 1))
2539 prompt_for_continue ();
2541 while (*lineptr
&& *lineptr
!= '\n')
2543 /* Print a single line. */
2544 if (*lineptr
== '\t')
2547 *wrap_pointer
++ = '\t';
2549 fputc_unfiltered ('\t', stream
);
2550 /* Shifting right by 3 produces the number of tab stops
2551 we have already passed, and then adding one and
2552 shifting left 3 advances to the next tab stop. */
2553 chars_printed
= ((chars_printed
>> 3) + 1) << 3;
2559 *wrap_pointer
++ = *lineptr
;
2561 fputc_unfiltered (*lineptr
, stream
);
2566 if (chars_printed
>= chars_per_line
)
2568 unsigned int save_chars
= chars_printed
;
2572 /* If we aren't actually wrapping, don't output newline --
2573 if chars_per_line is right, we probably just overflowed
2574 anyway; if it's wrong, let us keep going. */
2576 fputc_unfiltered ('\n', stream
);
2578 /* Possible new page. */
2579 if (lines_printed
>= lines_per_page
- 1)
2580 prompt_for_continue ();
2582 /* Now output indentation and wrapped string. */
2585 fputs_unfiltered (wrap_indent
, stream
);
2586 *wrap_pointer
= '\0'; /* Null-terminate saved stuff, */
2587 fputs_unfiltered (wrap_buffer
, stream
); /* and eject it. */
2588 /* FIXME, this strlen is what prevents wrap_indent from
2589 containing tabs. However, if we recurse to print it
2590 and count its chars, we risk trouble if wrap_indent is
2591 longer than (the user settable) chars_per_line.
2592 Note also that this can set chars_printed > chars_per_line
2593 if we are printing a long string. */
2594 chars_printed
= strlen (wrap_indent
)
2595 + (save_chars
- wrap_column
);
2596 wrap_pointer
= wrap_buffer
; /* Reset buffer */
2597 wrap_buffer
[0] = '\0';
2598 wrap_column
= 0; /* And disable fancy wrap */
2603 if (*lineptr
== '\n')
2606 wrap_here ((char *) 0); /* Spit out chars, cancel
2609 fputc_unfiltered ('\n', stream
);
2616 fputs_filtered (const char *linebuffer
, struct ui_file
*stream
)
2618 fputs_maybe_filtered (linebuffer
, stream
, 1);
2622 putchar_unfiltered (int c
)
2626 ui_file_write (gdb_stdout
, &buf
, 1);
2630 /* Write character C to gdb_stdout using GDB's paging mechanism and return C.
2631 May return nonlocally. */
2634 putchar_filtered (int c
)
2636 return fputc_filtered (c
, gdb_stdout
);
2640 fputc_unfiltered (int c
, struct ui_file
*stream
)
2644 ui_file_write (stream
, &buf
, 1);
2649 fputc_filtered (int c
, struct ui_file
*stream
)
2655 fputs_filtered (buf
, stream
);
2659 /* puts_debug is like fputs_unfiltered, except it prints special
2660 characters in printable fashion. */
2663 puts_debug (char *prefix
, char *string
, char *suffix
)
2667 /* Print prefix and suffix after each line. */
2668 static int new_line
= 1;
2669 static int return_p
= 0;
2670 static char *prev_prefix
= "";
2671 static char *prev_suffix
= "";
2673 if (*string
== '\n')
2676 /* If the prefix is changing, print the previous suffix, a new line,
2677 and the new prefix. */
2678 if ((return_p
|| (strcmp (prev_prefix
, prefix
) != 0)) && !new_line
)
2680 fputs_unfiltered (prev_suffix
, gdb_stdlog
);
2681 fputs_unfiltered ("\n", gdb_stdlog
);
2682 fputs_unfiltered (prefix
, gdb_stdlog
);
2685 /* Print prefix if we printed a newline during the previous call. */
2689 fputs_unfiltered (prefix
, gdb_stdlog
);
2692 prev_prefix
= prefix
;
2693 prev_suffix
= suffix
;
2695 /* Output characters in a printable format. */
2696 while ((ch
= *string
++) != '\0')
2702 fputc_unfiltered (ch
, gdb_stdlog
);
2705 fprintf_unfiltered (gdb_stdlog
, "\\x%02x", ch
& 0xff);
2709 fputs_unfiltered ("\\\\", gdb_stdlog
);
2712 fputs_unfiltered ("\\b", gdb_stdlog
);
2715 fputs_unfiltered ("\\f", gdb_stdlog
);
2719 fputs_unfiltered ("\\n", gdb_stdlog
);
2722 fputs_unfiltered ("\\r", gdb_stdlog
);
2725 fputs_unfiltered ("\\t", gdb_stdlog
);
2728 fputs_unfiltered ("\\v", gdb_stdlog
);
2732 return_p
= ch
== '\r';
2735 /* Print suffix if we printed a newline. */
2738 fputs_unfiltered (suffix
, gdb_stdlog
);
2739 fputs_unfiltered ("\n", gdb_stdlog
);
2744 /* Print a variable number of ARGS using format FORMAT. If this
2745 information is going to put the amount written (since the last call
2746 to REINITIALIZE_MORE_FILTER or the last page break) over the page size,
2747 call prompt_for_continue to get the users permision to continue.
2749 Unlike fprintf, this function does not return a value.
2751 We implement three variants, vfprintf (takes a vararg list and stream),
2752 fprintf (takes a stream to write on), and printf (the usual).
2754 Note also that a longjmp to top level may occur in this routine
2755 (since prompt_for_continue may do so) so this routine should not be
2756 called when cleanups are not in place. */
2759 vfprintf_maybe_filtered (struct ui_file
*stream
, const char *format
,
2760 va_list args
, int filter
)
2763 struct cleanup
*old_cleanups
;
2765 linebuffer
= xstrvprintf (format
, args
);
2766 old_cleanups
= make_cleanup (xfree
, linebuffer
);
2767 fputs_maybe_filtered (linebuffer
, stream
, filter
);
2768 do_cleanups (old_cleanups
);
2773 vfprintf_filtered (struct ui_file
*stream
, const char *format
, va_list args
)
2775 vfprintf_maybe_filtered (stream
, format
, args
, 1);
2779 vfprintf_unfiltered (struct ui_file
*stream
, const char *format
, va_list args
)
2782 struct cleanup
*old_cleanups
;
2784 linebuffer
= xstrvprintf (format
, args
);
2785 old_cleanups
= make_cleanup (xfree
, linebuffer
);
2786 if (debug_timestamp
&& stream
== gdb_stdlog
)
2792 gettimeofday (&tm
, NULL
);
2794 len
= strlen (linebuffer
);
2795 need_nl
= (len
> 0 && linebuffer
[len
- 1] != '\n');
2797 timestamp
= xstrprintf ("%ld:%ld %s%s",
2798 (long) tm
.tv_sec
, (long) tm
.tv_usec
,
2800 need_nl
? "\n": "");
2801 make_cleanup (xfree
, timestamp
);
2802 fputs_unfiltered (timestamp
, stream
);
2805 fputs_unfiltered (linebuffer
, stream
);
2806 do_cleanups (old_cleanups
);
2810 vprintf_filtered (const char *format
, va_list args
)
2812 vfprintf_maybe_filtered (gdb_stdout
, format
, args
, 1);
2816 vprintf_unfiltered (const char *format
, va_list args
)
2818 vfprintf_unfiltered (gdb_stdout
, format
, args
);
2822 fprintf_filtered (struct ui_file
*stream
, const char *format
, ...)
2826 va_start (args
, format
);
2827 vfprintf_filtered (stream
, format
, args
);
2832 fprintf_unfiltered (struct ui_file
*stream
, const char *format
, ...)
2836 va_start (args
, format
);
2837 vfprintf_unfiltered (stream
, format
, args
);
2841 /* Like fprintf_filtered, but prints its result indented.
2842 Called as fprintfi_filtered (spaces, stream, format, ...); */
2845 fprintfi_filtered (int spaces
, struct ui_file
*stream
, const char *format
,
2850 va_start (args
, format
);
2851 print_spaces_filtered (spaces
, stream
);
2853 vfprintf_filtered (stream
, format
, args
);
2859 printf_filtered (const char *format
, ...)
2863 va_start (args
, format
);
2864 vfprintf_filtered (gdb_stdout
, format
, args
);
2870 printf_unfiltered (const char *format
, ...)
2874 va_start (args
, format
);
2875 vfprintf_unfiltered (gdb_stdout
, format
, args
);
2879 /* Like printf_filtered, but prints it's result indented.
2880 Called as printfi_filtered (spaces, format, ...); */
2883 printfi_filtered (int spaces
, const char *format
, ...)
2887 va_start (args
, format
);
2888 print_spaces_filtered (spaces
, gdb_stdout
);
2889 vfprintf_filtered (gdb_stdout
, format
, args
);
2893 /* Easy -- but watch out!
2895 This routine is *not* a replacement for puts()! puts() appends a newline.
2896 This one doesn't, and had better not! */
2899 puts_filtered (const char *string
)
2901 fputs_filtered (string
, gdb_stdout
);
2905 puts_unfiltered (const char *string
)
2907 fputs_unfiltered (string
, gdb_stdout
);
2910 /* Return a pointer to N spaces and a null. The pointer is good
2911 until the next call to here. */
2916 static char *spaces
= 0;
2917 static int max_spaces
= -1;
2923 spaces
= (char *) xmalloc (n
+ 1);
2924 for (t
= spaces
+ n
; t
!= spaces
;)
2930 return spaces
+ max_spaces
- n
;
2933 /* Print N spaces. */
2935 print_spaces_filtered (int n
, struct ui_file
*stream
)
2937 fputs_filtered (n_spaces (n
), stream
);
2940 /* C++/ObjC demangler stuff. */
2942 /* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language
2943 LANG, using demangling args ARG_MODE, and print it filtered to STREAM.
2944 If the name is not mangled, or the language for the name is unknown, or
2945 demangling is off, the name is printed in its "raw" form. */
2948 fprintf_symbol_filtered (struct ui_file
*stream
, char *name
,
2949 enum language lang
, int arg_mode
)
2955 /* If user wants to see raw output, no problem. */
2958 fputs_filtered (name
, stream
);
2962 demangled
= language_demangle (language_def (lang
), name
, arg_mode
);
2963 fputs_filtered (demangled
? demangled
: name
, stream
);
2964 if (demangled
!= NULL
)
2972 /* Do a strcmp() type operation on STRING1 and STRING2, ignoring any
2973 differences in whitespace. Returns 0 if they match, non-zero if they
2974 don't (slightly different than strcmp()'s range of return values).
2976 As an extra hack, string1=="FOO(ARGS)" matches string2=="FOO".
2977 This "feature" is useful when searching for matching C++ function names
2978 (such as if the user types 'break FOO', where FOO is a mangled C++
2982 strcmp_iw (const char *string1
, const char *string2
)
2984 while ((*string1
!= '\0') && (*string2
!= '\0'))
2986 while (isspace (*string1
))
2990 while (isspace (*string2
))
2994 if (case_sensitivity
== case_sensitive_on
&& *string1
!= *string2
)
2996 if (case_sensitivity
== case_sensitive_off
2997 && (tolower ((unsigned char) *string1
)
2998 != tolower ((unsigned char) *string2
)))
3000 if (*string1
!= '\0')
3006 return (*string1
!= '\0' && *string1
!= '(') || (*string2
!= '\0');
3009 /* This is like strcmp except that it ignores whitespace and treats
3010 '(' as the first non-NULL character in terms of ordering. Like
3011 strcmp (and unlike strcmp_iw), it returns negative if STRING1 <
3012 STRING2, 0 if STRING2 = STRING2, and positive if STRING1 > STRING2
3013 according to that ordering.
3015 If a list is sorted according to this function and if you want to
3016 find names in the list that match some fixed NAME according to
3017 strcmp_iw(LIST_ELT, NAME), then the place to start looking is right
3018 where this function would put NAME.
3020 This function must be neutral to the CASE_SENSITIVITY setting as the user
3021 may choose it during later lookup. Therefore this function always sorts
3022 primarily case-insensitively and secondarily case-sensitively.
3024 Here are some examples of why using strcmp to sort is a bad idea:
3028 Say your partial symtab contains: "foo<char *>", "goo". Then, if
3029 we try to do a search for "foo<char*>", strcmp will locate this
3030 after "foo<char *>" and before "goo". Then lookup_partial_symbol
3031 will start looking at strings beginning with "goo", and will never
3032 see the correct match of "foo<char *>".
3034 Parenthesis example:
3036 In practice, this is less like to be an issue, but I'll give it a
3037 shot. Let's assume that '$' is a legitimate character to occur in
3038 symbols. (Which may well even be the case on some systems.) Then
3039 say that the partial symbol table contains "foo$" and "foo(int)".
3040 strcmp will put them in this order, since '$' < '('. Now, if the
3041 user searches for "foo", then strcmp will sort "foo" before "foo$".
3042 Then lookup_partial_symbol will notice that strcmp_iw("foo$",
3043 "foo") is false, so it won't proceed to the actual match of
3044 "foo(int)" with "foo". */
3047 strcmp_iw_ordered (const char *string1
, const char *string2
)
3049 const char *saved_string1
= string1
, *saved_string2
= string2
;
3050 enum case_sensitivity case_pass
= case_sensitive_off
;
3054 /* C1 and C2 are valid only if *string1 != '\0' && *string2 != '\0'.
3055 Provide stub characters if we are already at the end of one of the
3057 char c1
= 'X', c2
= 'X';
3059 while (*string1
!= '\0' && *string2
!= '\0')
3061 while (isspace (*string1
))
3063 while (isspace (*string2
))
3068 case case_sensitive_off
:
3069 c1
= tolower ((unsigned char) *string1
);
3070 c2
= tolower ((unsigned char) *string2
);
3072 case case_sensitive_on
:
3080 if (*string1
!= '\0')
3089 /* Characters are non-equal unless they're both '\0'; we want to
3090 make sure we get the comparison right according to our
3091 comparison in the cases where one of them is '\0' or '('. */
3093 if (*string2
== '\0')
3098 if (*string2
== '\0')
3103 if (*string2
== '\0' || *string2
== '(')
3112 if (case_pass
== case_sensitive_on
)
3115 /* Otherwise the strings were equal in case insensitive way, make
3116 a more fine grained comparison in a case sensitive way. */
3118 case_pass
= case_sensitive_on
;
3119 string1
= saved_string1
;
3120 string2
= saved_string2
;
3124 /* A simple comparison function with opposite semantics to strcmp. */
3127 streq (const char *lhs
, const char *rhs
)
3129 return !strcmp (lhs
, rhs
);
3135 ** Answer whether string_to_compare is a full or partial match to
3136 ** template_string. The partial match must be in sequence starting
3140 subset_compare (char *string_to_compare
, char *template_string
)
3144 if (template_string
!= (char *) NULL
&& string_to_compare
!= (char *) NULL
3145 && strlen (string_to_compare
) <= strlen (template_string
))
3148 (template_string
, string_to_compare
, strlen (string_to_compare
)) == 0);
3155 pagination_on_command (char *arg
, int from_tty
)
3157 pagination_enabled
= 1;
3161 pagination_off_command (char *arg
, int from_tty
)
3163 pagination_enabled
= 0;
3167 show_debug_timestamp (struct ui_file
*file
, int from_tty
,
3168 struct cmd_list_element
*c
, const char *value
)
3170 fprintf_filtered (file
, _("Timestamping debugging messages is %s.\n"),
3176 initialize_utils (void)
3178 add_setshow_uinteger_cmd ("width", class_support
, &chars_per_line
, _("\
3179 Set number of characters gdb thinks are in a line."), _("\
3180 Show number of characters gdb thinks are in a line."), NULL
,
3182 show_chars_per_line
,
3183 &setlist
, &showlist
);
3185 add_setshow_uinteger_cmd ("height", class_support
, &lines_per_page
, _("\
3186 Set number of lines gdb thinks are in a page."), _("\
3187 Show number of lines gdb thinks are in a page."), NULL
,
3189 show_lines_per_page
,
3190 &setlist
, &showlist
);
3194 add_setshow_boolean_cmd ("demangle", class_support
, &demangle
, _("\
3195 Set demangling of encoded C++/ObjC names when displaying symbols."), _("\
3196 Show demangling of encoded C++/ObjC names when displaying symbols."), NULL
,
3199 &setprintlist
, &showprintlist
);
3201 add_setshow_boolean_cmd ("pagination", class_support
,
3202 &pagination_enabled
, _("\
3203 Set state of pagination."), _("\
3204 Show state of pagination."), NULL
,
3206 show_pagination_enabled
,
3207 &setlist
, &showlist
);
3211 add_com ("am", class_support
, pagination_on_command
,
3212 _("Enable pagination"));
3213 add_com ("sm", class_support
, pagination_off_command
,
3214 _("Disable pagination"));
3217 add_setshow_boolean_cmd ("sevenbit-strings", class_support
,
3218 &sevenbit_strings
, _("\
3219 Set printing of 8-bit characters in strings as \\nnn."), _("\
3220 Show printing of 8-bit characters in strings as \\nnn."), NULL
,
3222 show_sevenbit_strings
,
3223 &setprintlist
, &showprintlist
);
3225 add_setshow_boolean_cmd ("asm-demangle", class_support
, &asm_demangle
, _("\
3226 Set demangling of C++/ObjC names in disassembly listings."), _("\
3227 Show demangling of C++/ObjC names in disassembly listings."), NULL
,
3230 &setprintlist
, &showprintlist
);
3232 add_setshow_boolean_cmd ("timestamp", class_maintenance
,
3233 &debug_timestamp
, _("\
3234 Set timestamping of debugging messages."), _("\
3235 Show timestamping of debugging messages."), _("\
3236 When set, debugging messages will be marked with seconds and microseconds."),
3238 show_debug_timestamp
,
3239 &setdebuglist
, &showdebuglist
);
3242 /* Machine specific function to handle SIGWINCH signal. */
3244 #ifdef SIGWINCH_HANDLER_BODY
3245 SIGWINCH_HANDLER_BODY
3247 /* Print routines to handle variable size regs, etc. */
3248 /* Temporary storage using circular buffer. */
3254 static char buf
[NUMCELLS
][CELLSIZE
];
3255 static int cell
= 0;
3257 if (++cell
>= NUMCELLS
)
3263 paddress (struct gdbarch
*gdbarch
, CORE_ADDR addr
)
3265 /* Truncate address to the size of a target address, avoiding shifts
3266 larger or equal than the width of a CORE_ADDR. The local
3267 variable ADDR_BIT stops the compiler reporting a shift overflow
3268 when it won't occur. */
3269 /* NOTE: This assumes that the significant address information is
3270 kept in the least significant bits of ADDR - the upper bits were
3271 either zero or sign extended. Should gdbarch_address_to_pointer or
3272 some ADDRESS_TO_PRINTABLE() be used to do the conversion? */
3274 int addr_bit
= gdbarch_addr_bit (gdbarch
);
3276 if (addr_bit
< (sizeof (CORE_ADDR
) * HOST_CHAR_BIT
))
3277 addr
&= ((CORE_ADDR
) 1 << addr_bit
) - 1;
3278 return hex_string (addr
);
3281 /* This function is described in "defs.h". */
3284 print_core_address (struct gdbarch
*gdbarch
, CORE_ADDR address
)
3286 int addr_bit
= gdbarch_addr_bit (gdbarch
);
3288 if (addr_bit
< (sizeof (CORE_ADDR
) * HOST_CHAR_BIT
))
3289 address
&= ((CORE_ADDR
) 1 << addr_bit
) - 1;
3291 /* FIXME: cagney/2002-05-03: Need local_address_string() function
3292 that returns the language localized string formatted to a width
3293 based on gdbarch_addr_bit. */
3295 return hex_string_custom (address
, 8);
3297 return hex_string_custom (address
, 16);
3301 decimal2str (char *sign
, ULONGEST addr
, int width
)
3303 /* Steal code from valprint.c:print_decimal(). Should this worry
3304 about the real size of addr as the above does? */
3305 unsigned long temp
[3];
3306 char *str
= get_cell ();
3311 temp
[i
] = addr
% (1000 * 1000 * 1000);
3312 addr
/= (1000 * 1000 * 1000);
3316 while (addr
!= 0 && i
< (sizeof (temp
) / sizeof (temp
[0])));
3325 xsnprintf (str
, CELLSIZE
, "%s%0*lu", sign
, width
, temp
[0]);
3328 xsnprintf (str
, CELLSIZE
, "%s%0*lu%09lu", sign
, width
,
3332 xsnprintf (str
, CELLSIZE
, "%s%0*lu%09lu%09lu", sign
, width
,
3333 temp
[2], temp
[1], temp
[0]);
3336 internal_error (__FILE__
, __LINE__
,
3337 _("failed internal consistency check"));
3344 octal2str (ULONGEST addr
, int width
)
3346 unsigned long temp
[3];
3347 char *str
= get_cell ();
3352 temp
[i
] = addr
% (0100000 * 0100000);
3353 addr
/= (0100000 * 0100000);
3357 while (addr
!= 0 && i
< (sizeof (temp
) / sizeof (temp
[0])));
3367 xsnprintf (str
, CELLSIZE
, "%*o", width
, 0);
3369 xsnprintf (str
, CELLSIZE
, "0%0*lo", width
, temp
[0]);
3372 xsnprintf (str
, CELLSIZE
, "0%0*lo%010lo", width
, temp
[1], temp
[0]);
3375 xsnprintf (str
, CELLSIZE
, "0%0*lo%010lo%010lo", width
,
3376 temp
[2], temp
[1], temp
[0]);
3379 internal_error (__FILE__
, __LINE__
,
3380 _("failed internal consistency check"));
3387 pulongest (ULONGEST u
)
3389 return decimal2str ("", u
, 0);
3393 plongest (LONGEST l
)
3396 return decimal2str ("-", -l
, 0);
3398 return decimal2str ("", l
, 0);
3401 /* Eliminate warning from compiler on 32-bit systems. */
3402 static int thirty_two
= 32;
3405 phex (ULONGEST l
, int sizeof_l
)
3413 xsnprintf (str
, CELLSIZE
, "%08lx%08lx",
3414 (unsigned long) (l
>> thirty_two
),
3415 (unsigned long) (l
& 0xffffffff));
3419 xsnprintf (str
, CELLSIZE
, "%08lx", (unsigned long) l
);
3423 xsnprintf (str
, CELLSIZE
, "%04x", (unsigned short) (l
& 0xffff));
3426 str
= phex (l
, sizeof (l
));
3434 phex_nz (ULONGEST l
, int sizeof_l
)
3442 unsigned long high
= (unsigned long) (l
>> thirty_two
);
3446 xsnprintf (str
, CELLSIZE
, "%lx",
3447 (unsigned long) (l
& 0xffffffff));
3449 xsnprintf (str
, CELLSIZE
, "%lx%08lx", high
,
3450 (unsigned long) (l
& 0xffffffff));
3455 xsnprintf (str
, CELLSIZE
, "%lx", (unsigned long) l
);
3459 xsnprintf (str
, CELLSIZE
, "%x", (unsigned short) (l
& 0xffff));
3462 str
= phex_nz (l
, sizeof (l
));
3469 /* Converts a LONGEST to a C-format hexadecimal literal and stores it
3470 in a static string. Returns a pointer to this string. */
3472 hex_string (LONGEST num
)
3474 char *result
= get_cell ();
3476 xsnprintf (result
, CELLSIZE
, "0x%s", phex_nz (num
, sizeof (num
)));
3480 /* Converts a LONGEST number to a C-format hexadecimal literal and
3481 stores it in a static string. Returns a pointer to this string
3482 that is valid until the next call. The number is padded on the
3483 left with 0s to at least WIDTH characters. */
3485 hex_string_custom (LONGEST num
, int width
)
3487 char *result
= get_cell ();
3488 char *result_end
= result
+ CELLSIZE
- 1;
3489 const char *hex
= phex_nz (num
, sizeof (num
));
3490 int hex_len
= strlen (hex
);
3492 if (hex_len
> width
)
3494 if (width
+ 2 >= CELLSIZE
)
3495 internal_error (__FILE__
, __LINE__
, _("\
3496 hex_string_custom: insufficient space to store result"));
3498 strcpy (result_end
- width
- 2, "0x");
3499 memset (result_end
- width
, '0', width
);
3500 strcpy (result_end
- hex_len
, hex
);
3501 return result_end
- width
- 2;
3504 /* Convert VAL to a numeral in the given radix. For
3505 * radix 10, IS_SIGNED may be true, indicating a signed quantity;
3506 * otherwise VAL is interpreted as unsigned. If WIDTH is supplied,
3507 * it is the minimum width (0-padded if needed). USE_C_FORMAT means
3508 * to use C format in all cases. If it is false, then 'x'
3509 * and 'o' formats do not include a prefix (0x or leading 0). */
3512 int_string (LONGEST val
, int radix
, int is_signed
, int width
,
3522 result
= hex_string (val
);
3524 result
= hex_string_custom (val
, width
);
3531 if (is_signed
&& val
< 0)
3532 return decimal2str ("-", -val
, width
);
3534 return decimal2str ("", val
, width
);
3538 char *result
= octal2str (val
, width
);
3540 if (use_c_format
|| val
== 0)
3546 internal_error (__FILE__
, __LINE__
,
3547 _("failed internal consistency check"));
3551 /* Convert a CORE_ADDR into a string. */
3553 core_addr_to_string (const CORE_ADDR addr
)
3555 char *str
= get_cell ();
3558 strcat (str
, phex (addr
, sizeof (addr
)));
3563 core_addr_to_string_nz (const CORE_ADDR addr
)
3565 char *str
= get_cell ();
3568 strcat (str
, phex_nz (addr
, sizeof (addr
)));
3572 /* Convert a string back into a CORE_ADDR. */
3574 string_to_core_addr (const char *my_string
)
3578 if (my_string
[0] == '0' && tolower (my_string
[1]) == 'x')
3580 /* Assume that it is in hex. */
3583 for (i
= 2; my_string
[i
] != '\0'; i
++)
3585 if (isdigit (my_string
[i
]))
3586 addr
= (my_string
[i
] - '0') + (addr
* 16);
3587 else if (isxdigit (my_string
[i
]))
3588 addr
= (tolower (my_string
[i
]) - 'a' + 0xa) + (addr
* 16);
3590 error (_("invalid hex \"%s\""), my_string
);
3595 /* Assume that it is in decimal. */
3598 for (i
= 0; my_string
[i
] != '\0'; i
++)
3600 if (isdigit (my_string
[i
]))
3601 addr
= (my_string
[i
] - '0') + (addr
* 10);
3603 error (_("invalid decimal \"%s\""), my_string
);
3611 host_address_to_string (const void *addr
)
3613 char *str
= get_cell ();
3615 xsnprintf (str
, CELLSIZE
, "0x%s", phex_nz ((uintptr_t) addr
, sizeof (addr
)));
3620 gdb_realpath (const char *filename
)
3622 /* Method 1: The system has a compile time upper bound on a filename
3623 path. Use that and realpath() to canonicalize the name. This is
3624 the most common case. Note that, if there isn't a compile time
3625 upper bound, you want to avoid realpath() at all costs. */
3626 #if defined(HAVE_REALPATH)
3628 # if defined (PATH_MAX)
3630 # define USE_REALPATH
3631 # elif defined (MAXPATHLEN)
3632 char buf
[MAXPATHLEN
];
3633 # define USE_REALPATH
3635 # if defined (USE_REALPATH)
3636 const char *rp
= realpath (filename
, buf
);
3640 return xstrdup (rp
);
3643 #endif /* HAVE_REALPATH */
3645 /* Method 2: The host system (i.e., GNU) has the function
3646 canonicalize_file_name() which malloc's a chunk of memory and
3647 returns that, use that. */
3648 #if defined(HAVE_CANONICALIZE_FILE_NAME)
3650 char *rp
= canonicalize_file_name (filename
);
3653 return xstrdup (filename
);
3659 /* FIXME: cagney/2002-11-13:
3661 Method 2a: Use realpath() with a NULL buffer. Some systems, due
3662 to the problems described in method 3, have modified their
3663 realpath() implementation so that it will allocate a buffer when
3664 NULL is passed in. Before this can be used, though, some sort of
3665 configure time test would need to be added. Otherwize the code
3666 will likely core dump. */
3668 /* Method 3: Now we're getting desperate! The system doesn't have a
3669 compile time buffer size and no alternative function. Query the
3670 OS, using pathconf(), for the buffer limit. Care is needed
3671 though, some systems do not limit PATH_MAX (return -1 for
3672 pathconf()) making it impossible to pass a correctly sized buffer
3673 to realpath() (it could always overflow). On those systems, we
3675 #if defined (HAVE_REALPATH) && defined (HAVE_UNISTD_H) && defined(HAVE_ALLOCA)
3677 /* Find out the max path size. */
3678 long path_max
= pathconf ("/", _PC_PATH_MAX
);
3682 /* PATH_MAX is bounded. */
3683 char *buf
= alloca (path_max
);
3684 char *rp
= realpath (filename
, buf
);
3686 return xstrdup (rp
? rp
: filename
);
3691 /* This system is a lost cause, just dup the buffer. */
3692 return xstrdup (filename
);
3695 /* Return a copy of FILENAME, with its directory prefix canonicalized
3699 xfullpath (const char *filename
)
3701 const char *base_name
= lbasename (filename
);
3706 /* Extract the basename of filename, and return immediately
3707 a copy of filename if it does not contain any directory prefix. */
3708 if (base_name
== filename
)
3709 return xstrdup (filename
);
3711 dir_name
= alloca ((size_t) (base_name
- filename
+ 2));
3712 /* Allocate enough space to store the dir_name + plus one extra
3713 character sometimes needed under Windows (see below), and
3714 then the closing \000 character. */
3715 strncpy (dir_name
, filename
, base_name
- filename
);
3716 dir_name
[base_name
- filename
] = '\000';
3718 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
3719 /* We need to be careful when filename is of the form 'd:foo', which
3720 is equivalent of d:./foo, which is totally different from d:/foo. */
3721 if (strlen (dir_name
) == 2 && isalpha (dir_name
[0]) && dir_name
[1] == ':')
3724 dir_name
[3] = '\000';
3728 /* Canonicalize the directory prefix, and build the resulting
3729 filename. If the dirname realpath already contains an ending
3730 directory separator, avoid doubling it. */
3731 real_path
= gdb_realpath (dir_name
);
3732 if (IS_DIR_SEPARATOR (real_path
[strlen (real_path
) - 1]))
3733 result
= concat (real_path
, base_name
, (char *) NULL
);
3735 result
= concat (real_path
, SLASH_STRING
, base_name
, (char *) NULL
);
3742 /* This is the 32-bit CRC function used by the GNU separate debug
3743 facility. An executable may contain a section named
3744 .gnu_debuglink, which holds the name of a separate executable file
3745 containing its debug info, and a checksum of that file's contents,
3746 computed using this function. */
3748 gnu_debuglink_crc32 (unsigned long crc
, unsigned char *buf
, size_t len
)
3750 static const unsigned int crc32_table
[256] = {
3751 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419,
3752 0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4,
3753 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07,
3754 0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,
3755 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856,
3756 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
3757 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4,
3758 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
3759 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3,
3760 0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a,
3761 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599,
3762 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
3763 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190,
3764 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f,
3765 0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e,
3766 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
3767 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed,
3768 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
3769 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3,
3770 0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2,
3771 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a,
3772 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5,
3773 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010,
3774 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
3775 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17,
3776 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6,
3777 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615,
3778 0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,
3779 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344,
3780 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
3781 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a,
3782 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
3783 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1,
3784 0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c,
3785 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef,
3786 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
3787 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe,
3788 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31,
3789 0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c,
3790 0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
3791 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b,
3792 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
3793 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1,
3794 0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,
3795 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278,
3796 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7,
3797 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66,
3798 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
3799 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605,
3800 0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8,
3801 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b,
3806 crc
= ~crc
& 0xffffffff;
3807 for (end
= buf
+ len
; buf
< end
; ++buf
)
3808 crc
= crc32_table
[(crc
^ *buf
) & 0xff] ^ (crc
>> 8);
3809 return ~crc
& 0xffffffff;
3813 align_up (ULONGEST v
, int n
)
3815 /* Check that N is really a power of two. */
3816 gdb_assert (n
&& (n
& (n
-1)) == 0);
3817 return (v
+ n
- 1) & -n
;
3821 align_down (ULONGEST v
, int n
)
3823 /* Check that N is really a power of two. */
3824 gdb_assert (n
&& (n
& (n
-1)) == 0);
3828 /* Allocation function for the libiberty hash table which uses an
3829 obstack. The obstack is passed as DATA. */
3832 hashtab_obstack_allocate (void *data
, size_t size
, size_t count
)
3834 unsigned int total
= size
* count
;
3835 void *ptr
= obstack_alloc ((struct obstack
*) data
, total
);
3837 memset (ptr
, 0, total
);
3841 /* Trivial deallocation function for the libiberty splay tree and hash
3842 table - don't deallocate anything. Rely on later deletion of the
3843 obstack. DATA will be the obstack, although it is not needed
3847 dummy_obstack_deallocate (void *object
, void *data
)
3852 /* The bit offset of the highest byte in a ULONGEST, for overflow
3855 #define HIGH_BYTE_POSN ((sizeof (ULONGEST) - 1) * HOST_CHAR_BIT)
3857 /* True (non-zero) iff DIGIT is a valid digit in radix BASE,
3858 where 2 <= BASE <= 36. */
3861 is_digit_in_base (unsigned char digit
, int base
)
3863 if (!isalnum (digit
))
3866 return (isdigit (digit
) && digit
< base
+ '0');
3868 return (isdigit (digit
) || tolower (digit
) < base
- 10 + 'a');
3872 digit_to_int (unsigned char c
)
3877 return tolower (c
) - 'a' + 10;
3880 /* As for strtoul, but for ULONGEST results. */
3883 strtoulst (const char *num
, const char **trailer
, int base
)
3885 unsigned int high_part
;
3890 /* Skip leading whitespace. */
3891 while (isspace (num
[i
]))
3894 /* Handle prefixes. */
3897 else if (num
[i
] == '-')
3903 if (base
== 0 || base
== 16)
3905 if (num
[i
] == '0' && (num
[i
+ 1] == 'x' || num
[i
+ 1] == 'X'))
3913 if (base
== 0 && num
[i
] == '0')
3919 if (base
< 2 || base
> 36)
3925 result
= high_part
= 0;
3926 for (; is_digit_in_base (num
[i
], base
); i
+= 1)
3928 result
= result
* base
+ digit_to_int (num
[i
]);
3929 high_part
= high_part
* base
+ (unsigned int) (result
>> HIGH_BYTE_POSN
);
3930 result
&= ((ULONGEST
) 1 << HIGH_BYTE_POSN
) - 1;
3931 if (high_part
> 0xff)
3934 result
= ~ (ULONGEST
) 0;
3941 if (trailer
!= NULL
)
3944 result
= result
+ ((ULONGEST
) high_part
<< HIGH_BYTE_POSN
);
3951 /* Simple, portable version of dirname that does not modify its
3955 ldirname (const char *filename
)
3957 const char *base
= lbasename (filename
);
3960 while (base
> filename
&& IS_DIR_SEPARATOR (base
[-1]))
3963 if (base
== filename
)
3966 dirname
= xmalloc (base
- filename
+ 2);
3967 memcpy (dirname
, filename
, base
- filename
);
3969 /* On DOS based file systems, convert "d:foo" to "d:.", so that we
3970 create "d:./bar" later instead of the (different) "d:/bar". */
3971 if (base
- filename
== 2 && IS_ABSOLUTE_PATH (base
)
3972 && !IS_DIR_SEPARATOR (filename
[0]))
3973 dirname
[base
++ - filename
] = '.';
3975 dirname
[base
- filename
] = '\0';
3979 /* Call libiberty's buildargv, and return the result.
3980 If buildargv fails due to out-of-memory, call nomem.
3981 Therefore, the returned value is guaranteed to be non-NULL,
3982 unless the parameter itself is NULL. */
3985 gdb_buildargv (const char *s
)
3987 char **argv
= buildargv (s
);
3989 if (s
!= NULL
&& argv
== NULL
)
3995 compare_positive_ints (const void *ap
, const void *bp
)
3997 /* Because we know we're comparing two ints which are positive,
3998 there's no danger of overflow here. */
3999 return * (int *) ap
- * (int *) bp
;
4002 #define AMBIGUOUS_MESS1 ".\nMatching formats:"
4003 #define AMBIGUOUS_MESS2 \
4004 ".\nUse \"set gnutarget format-name\" to specify the format."
4007 gdb_bfd_errmsg (bfd_error_type error_tag
, char **matching
)
4013 /* Check if errmsg just need simple return. */
4014 if (error_tag
!= bfd_error_file_ambiguously_recognized
|| matching
== NULL
)
4015 return bfd_errmsg (error_tag
);
4017 ret_len
= strlen (bfd_errmsg (error_tag
)) + strlen (AMBIGUOUS_MESS1
)
4018 + strlen (AMBIGUOUS_MESS2
);
4019 for (p
= matching
; *p
; p
++)
4020 ret_len
+= strlen (*p
) + 1;
4021 ret
= xmalloc (ret_len
+ 1);
4023 make_cleanup (xfree
, ret
);
4025 strcpy (retp
, bfd_errmsg (error_tag
));
4026 retp
+= strlen (retp
);
4028 strcpy (retp
, AMBIGUOUS_MESS1
);
4029 retp
+= strlen (retp
);
4031 for (p
= matching
; *p
; p
++)
4033 sprintf (retp
, " %s", *p
);
4034 retp
+= strlen (retp
);
4038 strcpy (retp
, AMBIGUOUS_MESS2
);
4043 /* Return ARGS parsed as a valid pid, or throw an error. */
4046 parse_pid_to_attach (char *args
)
4052 error_no_arg (_("process-id to attach"));
4055 pid
= strtoul (args
, &dummy
, 0);
4056 /* Some targets don't set errno on errors, grrr! */
4057 if ((pid
== 0 && dummy
== args
) || dummy
!= &args
[strlen (args
)])
4058 error (_("Illegal process-id: %s."), args
);
4063 /* Provide a prototype to silence -Wmissing-prototypes. */
4064 extern initialize_file_ftype _initialize_utils
;
4067 _initialize_utils (void)
4069 add_internal_problem_command (&internal_error_problem
);
4070 add_internal_problem_command (&internal_warning_problem
);