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 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"
62 #include "inferior.h" /* for signed_pointer_to_address */
64 #include <sys/param.h> /* For MAXPATHLEN */
66 #include "gdb_curses.h"
68 #include "readline/readline.h"
73 #include "gdb_usleep.h"
76 extern PTR
malloc (); /* ARI: PTR */
78 #if !HAVE_DECL_REALLOC
79 extern PTR
realloc (); /* ARI: PTR */
85 /* readline defines this. */
88 void (*deprecated_error_begin_hook
) (void);
90 /* Prototypes for local functions */
92 static void vfprintf_maybe_filtered (struct ui_file
*, const char *,
93 va_list, int) ATTR_FORMAT (printf
, 2, 0);
95 static void fputs_maybe_filtered (const char *, struct ui_file
*, int);
97 static void do_my_cleanups (struct cleanup
**, struct cleanup
*);
99 static void prompt_for_continue (void);
101 static void set_screen_size (void);
102 static void set_width (void);
104 /* A flag indicating whether to timestamp debugging messages. */
106 static int debug_timestamp
= 0;
108 /* Chain of cleanup actions established with make_cleanup,
109 to be executed if an error happens. */
111 static struct cleanup
*cleanup_chain
; /* cleaned up after a failed command */
112 static struct cleanup
*final_cleanup_chain
; /* cleaned up when gdb exits */
114 /* Nonzero if we have job control. */
118 /* Nonzero means a quit has been requested. */
122 /* Nonzero means quit immediately if Control-C is typed now, rather
123 than waiting until QUIT is executed. Be careful in setting this;
124 code which executes with immediate_quit set has to be very careful
125 about being able to deal with being interrupted at any time. It is
126 almost always better to use QUIT; the only exception I can think of
127 is being able to quit out of a system call (using EINTR loses if
128 the SIGINT happens between the previous QUIT and the system call).
129 To immediately quit in the case in which a SIGINT happens between
130 the previous QUIT and setting immediate_quit (desirable anytime we
131 expect to block), call QUIT after setting immediate_quit. */
135 /* Nonzero means that encoded C++/ObjC names should be printed out in their
136 C++/ObjC form rather than raw. */
140 show_demangle (struct ui_file
*file
, int from_tty
,
141 struct cmd_list_element
*c
, const char *value
)
143 fprintf_filtered (file
, _("\
144 Demangling of encoded C++/ObjC names when displaying symbols is %s.\n"),
148 /* Nonzero means that encoded C++/ObjC names should be printed out in their
149 C++/ObjC form even in assembler language displays. If this is set, but
150 DEMANGLE is zero, names are printed raw, i.e. DEMANGLE controls. */
152 int asm_demangle
= 0;
154 show_asm_demangle (struct ui_file
*file
, int from_tty
,
155 struct cmd_list_element
*c
, const char *value
)
157 fprintf_filtered (file
, _("\
158 Demangling of C++/ObjC names in disassembly listings is %s.\n"),
162 /* Nonzero means that strings with character values >0x7F should be printed
163 as octal escapes. Zero means just print the value (e.g. it's an
164 international character, and the terminal or window can cope.) */
166 int sevenbit_strings
= 0;
168 show_sevenbit_strings (struct ui_file
*file
, int from_tty
,
169 struct cmd_list_element
*c
, const char *value
)
171 fprintf_filtered (file
, _("\
172 Printing of 8-bit characters in strings as \\nnn is %s.\n"),
176 /* String to be printed before error messages, if any. */
178 char *error_pre_print
;
180 /* String to be printed before quit messages, if any. */
182 char *quit_pre_print
;
184 /* String to be printed before warning messages, if any. */
186 char *warning_pre_print
= "\nwarning: ";
188 int pagination_enabled
= 1;
190 show_pagination_enabled (struct ui_file
*file
, int from_tty
,
191 struct cmd_list_element
*c
, const char *value
)
193 fprintf_filtered (file
, _("State of pagination is %s.\n"), value
);
198 /* Add a new cleanup to the cleanup_chain,
199 and return the previous chain pointer
200 to be passed later to do_cleanups or discard_cleanups.
201 Args are FUNCTION to clean up with, and ARG to pass to it. */
204 make_cleanup (make_cleanup_ftype
*function
, void *arg
)
206 return make_my_cleanup (&cleanup_chain
, function
, arg
);
210 make_cleanup_dtor (make_cleanup_ftype
*function
, void *arg
,
211 void (*dtor
) (void *))
213 return make_my_cleanup2 (&cleanup_chain
,
214 function
, arg
, dtor
);
218 make_final_cleanup (make_cleanup_ftype
*function
, void *arg
)
220 return make_my_cleanup (&final_cleanup_chain
, function
, arg
);
224 do_freeargv (void *arg
)
226 freeargv ((char **) arg
);
230 make_cleanup_freeargv (char **arg
)
232 return make_my_cleanup (&cleanup_chain
, do_freeargv
, arg
);
236 do_bfd_close_cleanup (void *arg
)
242 make_cleanup_bfd_close (bfd
*abfd
)
244 return make_cleanup (do_bfd_close_cleanup
, abfd
);
248 do_close_cleanup (void *arg
)
255 make_cleanup_close (int fd
)
257 int *saved_fd
= xmalloc (sizeof (fd
));
259 return make_cleanup_dtor (do_close_cleanup
, saved_fd
, xfree
);
262 /* Helper function which does the work for make_cleanup_fclose. */
265 do_fclose_cleanup (void *arg
)
271 /* Return a new cleanup that closes FILE. */
274 make_cleanup_fclose (FILE *file
)
276 return make_cleanup (do_fclose_cleanup
, file
);
279 /* Helper function which does the work for make_cleanup_obstack_free. */
282 do_obstack_free (void *arg
)
284 struct obstack
*ob
= arg
;
285 obstack_free (ob
, NULL
);
288 /* Return a new cleanup that frees OBSTACK. */
291 make_cleanup_obstack_free (struct obstack
*obstack
)
293 return make_cleanup (do_obstack_free
, obstack
);
297 do_ui_file_delete (void *arg
)
299 ui_file_delete (arg
);
303 make_cleanup_ui_file_delete (struct ui_file
*arg
)
305 return make_my_cleanup (&cleanup_chain
, do_ui_file_delete
, arg
);
309 do_free_section_addr_info (void *arg
)
311 free_section_addr_info (arg
);
315 make_cleanup_free_section_addr_info (struct section_addr_info
*addrs
)
317 return make_my_cleanup (&cleanup_chain
, do_free_section_addr_info
, addrs
);
320 struct restore_integer_closure
327 restore_integer (void *p
)
329 struct restore_integer_closure
*closure
= p
;
330 *(closure
->variable
) = closure
->value
;
333 /* Remember the current value of *VARIABLE and make it restored when the cleanup
336 make_cleanup_restore_integer (int *variable
)
338 struct restore_integer_closure
*c
=
339 xmalloc (sizeof (struct restore_integer_closure
));
340 c
->variable
= variable
;
341 c
->value
= *variable
;
343 return make_my_cleanup2 (&cleanup_chain
, restore_integer
, (void *)c
,
348 make_my_cleanup2 (struct cleanup
**pmy_chain
, make_cleanup_ftype
*function
,
349 void *arg
, void (*free_arg
) (void *))
352 = (struct cleanup
*) xmalloc (sizeof (struct cleanup
));
353 struct cleanup
*old_chain
= *pmy_chain
;
355 new->next
= *pmy_chain
;
356 new->function
= function
;
357 new->free_arg
= free_arg
;
365 make_my_cleanup (struct cleanup
**pmy_chain
, make_cleanup_ftype
*function
,
368 return make_my_cleanup2 (pmy_chain
, function
, arg
, NULL
);
371 /* Discard cleanups and do the actions they describe
372 until we get back to the point OLD_CHAIN in the cleanup_chain. */
375 do_cleanups (struct cleanup
*old_chain
)
377 do_my_cleanups (&cleanup_chain
, old_chain
);
381 do_final_cleanups (struct cleanup
*old_chain
)
383 do_my_cleanups (&final_cleanup_chain
, old_chain
);
387 do_my_cleanups (struct cleanup
**pmy_chain
,
388 struct cleanup
*old_chain
)
391 while ((ptr
= *pmy_chain
) != old_chain
)
393 *pmy_chain
= ptr
->next
; /* Do this first incase recursion */
394 (*ptr
->function
) (ptr
->arg
);
396 (*ptr
->free_arg
) (ptr
->arg
);
401 /* Discard cleanups, not doing the actions they describe,
402 until we get back to the point OLD_CHAIN in the cleanup_chain. */
405 discard_cleanups (struct cleanup
*old_chain
)
407 discard_my_cleanups (&cleanup_chain
, old_chain
);
411 discard_final_cleanups (struct cleanup
*old_chain
)
413 discard_my_cleanups (&final_cleanup_chain
, old_chain
);
417 discard_my_cleanups (struct cleanup
**pmy_chain
,
418 struct cleanup
*old_chain
)
421 while ((ptr
= *pmy_chain
) != old_chain
)
423 *pmy_chain
= ptr
->next
;
425 (*ptr
->free_arg
) (ptr
->arg
);
430 /* Set the cleanup_chain to 0, and return the old cleanup chain. */
434 return save_my_cleanups (&cleanup_chain
);
438 save_final_cleanups (void)
440 return save_my_cleanups (&final_cleanup_chain
);
444 save_my_cleanups (struct cleanup
**pmy_chain
)
446 struct cleanup
*old_chain
= *pmy_chain
;
452 /* Restore the cleanup chain from a previously saved chain. */
454 restore_cleanups (struct cleanup
*chain
)
456 restore_my_cleanups (&cleanup_chain
, chain
);
460 restore_final_cleanups (struct cleanup
*chain
)
462 restore_my_cleanups (&final_cleanup_chain
, chain
);
466 restore_my_cleanups (struct cleanup
**pmy_chain
, struct cleanup
*chain
)
471 /* This function is useful for cleanups.
475 old_chain = make_cleanup (free_current_contents, &foo);
477 to arrange to free the object thus allocated. */
480 free_current_contents (void *ptr
)
482 void **location
= ptr
;
483 if (location
== NULL
)
484 internal_error (__FILE__
, __LINE__
,
485 _("free_current_contents: NULL pointer"));
486 if (*location
!= NULL
)
493 /* Provide a known function that does nothing, to use as a base for
494 for a possibly long chain of cleanups. This is useful where we
495 use the cleanup chain for handling normal cleanups as well as dealing
496 with cleanups that need to be done as a result of a call to error().
497 In such cases, we may not be certain where the first cleanup is, unless
498 we have a do-nothing one to always use as the base. */
501 null_cleanup (void *arg
)
505 /* Continuations are implemented as cleanups internally. Inherit from
512 /* Add a continuation to the continuation list of THREAD. The new
513 continuation will be added at the front. */
515 add_continuation (struct thread_info
*thread
,
516 void (*continuation_hook
) (void *), void *args
,
517 void (*continuation_free_args
) (void *))
519 struct cleanup
*as_cleanup
= &thread
->continuations
->base
;
520 make_cleanup_ftype
*continuation_hook_fn
= continuation_hook
;
522 make_my_cleanup2 (&as_cleanup
,
523 continuation_hook_fn
,
525 continuation_free_args
);
527 thread
->continuations
= (struct continuation
*) as_cleanup
;
530 /* Add a continuation to the continuation list of INFERIOR. The new
531 continuation will be added at the front. */
534 add_inferior_continuation (void (*continuation_hook
) (void *), void *args
,
535 void (*continuation_free_args
) (void *))
537 struct inferior
*inf
= current_inferior ();
538 struct cleanup
*as_cleanup
= &inf
->continuations
->base
;
539 make_cleanup_ftype
*continuation_hook_fn
= continuation_hook
;
541 make_my_cleanup2 (&as_cleanup
,
542 continuation_hook_fn
,
544 continuation_free_args
);
546 inf
->continuations
= (struct continuation
*) as_cleanup
;
549 /* Do all continuations of the current inferior. */
552 do_all_inferior_continuations (void)
554 struct cleanup
*old_chain
;
555 struct cleanup
*as_cleanup
;
556 struct inferior
*inf
= current_inferior ();
558 if (inf
->continuations
== NULL
)
561 /* Copy the list header into another pointer, and set the global
562 list header to null, so that the global list can change as a side
563 effect of invoking the continuations and the processing of the
564 preexisting continuations will not be affected. */
566 as_cleanup
= &inf
->continuations
->base
;
567 inf
->continuations
= NULL
;
569 /* Work now on the list we have set aside. */
570 do_my_cleanups (&as_cleanup
, NULL
);
573 /* Get rid of all the inferior-wide continuations of INF. */
576 discard_all_inferior_continuations (struct inferior
*inf
)
578 struct cleanup
*continuation_ptr
= &inf
->continuations
->base
;
579 discard_my_cleanups (&continuation_ptr
, NULL
);
580 inf
->continuations
= NULL
;
584 restore_thread_cleanup (void *arg
)
586 ptid_t
*ptid_p
= arg
;
587 switch_to_thread (*ptid_p
);
590 /* Walk down the continuation list of PTID, and execute all the
591 continuations. There is a problem though. In some cases new
592 continuations may be added while we are in the middle of this loop.
593 If this happens they will be added in the front, and done before we
594 have a chance of exhausting those that were already there. We need
595 to then save the beginning of the list in a pointer and do the
596 continuations from there on, instead of using the global beginning
597 of list as our iteration pointer. */
599 do_all_continuations_ptid (ptid_t ptid
,
600 struct continuation
**continuations_p
)
602 struct cleanup
*old_chain
;
603 ptid_t current_thread
;
604 struct cleanup
*as_cleanup
;
606 if (*continuations_p
== NULL
)
609 current_thread
= inferior_ptid
;
611 /* Restore selected thread on exit. Don't try to restore the frame
614 - When running continuations, the selected frame is always #0.
616 - The continuations may trigger symbol file loads, which may
617 change the frame layout (frame ids change), which would trigger
618 a warning if we used make_cleanup_restore_current_thread. */
620 old_chain
= make_cleanup (restore_thread_cleanup
, ¤t_thread
);
622 /* Let the continuation see this thread as selected. */
623 switch_to_thread (ptid
);
625 /* Copy the list header into another pointer, and set the global
626 list header to null, so that the global list can change as a side
627 effect of invoking the continuations and the processing of the
628 preexisting continuations will not be affected. */
630 as_cleanup
= &(*continuations_p
)->base
;
631 *continuations_p
= NULL
;
633 /* Work now on the list we have set aside. */
634 do_my_cleanups (&as_cleanup
, NULL
);
636 do_cleanups (old_chain
);
639 /* Callback for iterate over threads. */
641 do_all_continuations_thread_callback (struct thread_info
*thread
, void *data
)
643 do_all_continuations_ptid (thread
->ptid
, &thread
->continuations
);
647 /* Do all continuations of thread THREAD. */
649 do_all_continuations_thread (struct thread_info
*thread
)
651 do_all_continuations_thread_callback (thread
, NULL
);
654 /* Do all continuations of all threads. */
656 do_all_continuations (void)
658 iterate_over_threads (do_all_continuations_thread_callback
, NULL
);
661 /* Callback for iterate over threads. */
663 discard_all_continuations_thread_callback (struct thread_info
*thread
,
666 struct cleanup
*continuation_ptr
= &thread
->continuations
->base
;
667 discard_my_cleanups (&continuation_ptr
, NULL
);
668 thread
->continuations
= NULL
;
672 /* Get rid of all the continuations of THREAD. */
674 discard_all_continuations_thread (struct thread_info
*thread
)
676 discard_all_continuations_thread_callback (thread
, NULL
);
679 /* Get rid of all the continuations of all threads. */
681 discard_all_continuations (void)
683 iterate_over_threads (discard_all_continuations_thread_callback
, NULL
);
687 /* Add a continuation to the intermediate continuation list of THREAD.
688 The new continuation will be added at the front. */
690 add_intermediate_continuation (struct thread_info
*thread
,
691 void (*continuation_hook
)
692 (void *), void *args
,
693 void (*continuation_free_args
) (void *))
695 struct cleanup
*as_cleanup
= &thread
->intermediate_continuations
->base
;
696 make_cleanup_ftype
*continuation_hook_fn
= continuation_hook
;
698 make_my_cleanup2 (&as_cleanup
,
699 continuation_hook_fn
,
701 continuation_free_args
);
703 thread
->intermediate_continuations
= (struct continuation
*) as_cleanup
;
706 /* Walk down the cmd_continuation list, and execute all the
707 continuations. There is a problem though. In some cases new
708 continuations may be added while we are in the middle of this
709 loop. If this happens they will be added in the front, and done
710 before we have a chance of exhausting those that were already
711 there. We need to then save the beginning of the list in a pointer
712 and do the continuations from there on, instead of using the
713 global beginning of list as our iteration pointer.*/
715 do_all_intermediate_continuations_thread_callback (struct thread_info
*thread
,
718 do_all_continuations_ptid (thread
->ptid
,
719 &thread
->intermediate_continuations
);
723 /* Do all intermediate continuations of thread THREAD. */
725 do_all_intermediate_continuations_thread (struct thread_info
*thread
)
727 do_all_intermediate_continuations_thread_callback (thread
, NULL
);
730 /* Do all intermediate continuations of all threads. */
732 do_all_intermediate_continuations (void)
734 iterate_over_threads (do_all_intermediate_continuations_thread_callback
, NULL
);
737 /* Callback for iterate over threads. */
739 discard_all_intermediate_continuations_thread_callback (struct thread_info
*thread
,
742 struct cleanup
*continuation_ptr
= &thread
->intermediate_continuations
->base
;
743 discard_my_cleanups (&continuation_ptr
, NULL
);
744 thread
->intermediate_continuations
= NULL
;
748 /* Get rid of all the intermediate continuations of THREAD. */
750 discard_all_intermediate_continuations_thread (struct thread_info
*thread
)
752 discard_all_intermediate_continuations_thread_callback (thread
, NULL
);
755 /* Get rid of all the intermediate continuations of all threads. */
757 discard_all_intermediate_continuations (void)
759 iterate_over_threads (discard_all_intermediate_continuations_thread_callback
, NULL
);
764 /* Print a warning message. The first argument STRING is the warning
765 message, used as an fprintf format string, the second is the
766 va_list of arguments for that string. A warning is unfiltered (not
767 paginated) so that the user does not need to page through each
768 screen full of warnings when there are lots of them. */
771 vwarning (const char *string
, va_list args
)
773 if (deprecated_warning_hook
)
774 (*deprecated_warning_hook
) (string
, args
);
777 target_terminal_ours ();
778 wrap_here (""); /* Force out any buffered output */
779 gdb_flush (gdb_stdout
);
780 if (warning_pre_print
)
781 fputs_unfiltered (warning_pre_print
, gdb_stderr
);
782 vfprintf_unfiltered (gdb_stderr
, string
, args
);
783 fprintf_unfiltered (gdb_stderr
, "\n");
788 /* Print a warning message.
789 The first argument STRING is the warning message, used as a fprintf string,
790 and the remaining args are passed as arguments to it.
791 The primary difference between warnings and errors is that a warning
792 does not force the return to command level. */
795 warning (const char *string
, ...)
798 va_start (args
, string
);
799 vwarning (string
, args
);
803 /* Print an error message and return to command level.
804 The first argument STRING is the error message, used as a fprintf string,
805 and the remaining args are passed as arguments to it. */
808 verror (const char *string
, va_list args
)
810 throw_verror (GENERIC_ERROR
, string
, args
);
814 error (const char *string
, ...)
817 va_start (args
, string
);
818 throw_verror (GENERIC_ERROR
, string
, args
);
822 /* Print an error message and quit.
823 The first argument STRING is the error message, used as a fprintf string,
824 and the remaining args are passed as arguments to it. */
827 vfatal (const char *string
, va_list args
)
829 throw_vfatal (string
, args
);
833 fatal (const char *string
, ...)
836 va_start (args
, string
);
837 throw_vfatal (string
, args
);
842 error_stream (struct ui_file
*stream
)
844 char *message
= ui_file_xstrdup (stream
, NULL
);
845 make_cleanup (xfree
, message
);
846 error (("%s"), message
);
849 /* Dump core trying to increase the core soft limit to hard limit first. */
854 #ifdef HAVE_SETRLIMIT
855 struct rlimit rlim
= { RLIM_INFINITY
, RLIM_INFINITY
};
857 setrlimit (RLIMIT_CORE
, &rlim
);
858 #endif /* HAVE_SETRLIMIT */
860 abort (); /* NOTE: GDB has only three calls to abort(). */
863 /* Check whether GDB will be able to dump core using the dump_core function. */
866 can_dump_core (const char *reason
)
868 #ifdef HAVE_GETRLIMIT
871 /* Be quiet and assume we can dump if an error is returned. */
872 if (getrlimit (RLIMIT_CORE
, &rlim
) != 0)
875 if (rlim
.rlim_max
== 0)
877 fprintf_unfiltered (gdb_stderr
,
878 _("%s\nUnable to dump core, use `ulimit -c unlimited'"
879 " before executing GDB next time.\n"), reason
);
882 #endif /* HAVE_GETRLIMIT */
887 /* Allow the user to configure the debugger behavior with respect to
888 what to do when an internal problem is detected. */
890 const char internal_problem_ask
[] = "ask";
891 const char internal_problem_yes
[] = "yes";
892 const char internal_problem_no
[] = "no";
893 static const char *internal_problem_modes
[] =
895 internal_problem_ask
,
896 internal_problem_yes
,
900 static const char *internal_problem_mode
= internal_problem_ask
;
902 /* Print a message reporting an internal error/warning. Ask the user
903 if they want to continue, dump core, or just exit. Return
904 something to indicate a quit. */
906 struct internal_problem
909 const char *should_quit
;
910 const char *should_dump_core
;
913 /* Report a problem, internal to GDB, to the user. Once the problem
914 has been reported, and assuming GDB didn't quit, the caller can
915 either allow execution to resume or throw an error. */
917 static void ATTR_FORMAT (printf
, 4, 0)
918 internal_vproblem (struct internal_problem
*problem
,
919 const char *file
, int line
, const char *fmt
, va_list ap
)
926 /* Don't allow infinite error/warning recursion. */
928 static char msg
[] = "Recursive internal problem.\n";
936 fputs_unfiltered (msg
, gdb_stderr
);
937 abort (); /* NOTE: GDB has only three calls to abort(). */
940 /* Newer GLIBC versions put the warn_unused_result attribute
941 on write, but this is one of those rare cases where
942 ignoring the return value is correct. Casting to (void)
943 does not fix this problem. This is the solution suggested
944 at http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25509. */
945 if (write (STDERR_FILENO
, msg
, sizeof (msg
)) != sizeof (msg
))
946 abort (); /* NOTE: GDB has only three calls to abort(). */
951 /* Try to get the message out and at the start of a new line. */
952 target_terminal_ours ();
955 /* Create a string containing the full error/warning message. Need
956 to call query with this full string, as otherwize the reason
957 (error/warning) and question become separated. Format using a
958 style similar to a compiler error message. Include extra detail
959 so that the user knows that they are living on the edge. */
962 msg
= xstrvprintf (fmt
, ap
);
963 reason
= xstrprintf ("\
965 A problem internal to GDB has been detected,\n\
966 further debugging may prove unreliable.", file
, line
, problem
->name
, msg
);
968 make_cleanup (xfree
, reason
);
971 if (problem
->should_quit
== internal_problem_ask
)
973 /* Default (yes/batch case) is to quit GDB. When in batch mode
974 this lessens the likelihood of GDB going into an infinite
978 /* Emit the message and quit. */
979 fputs_unfiltered (reason
, gdb_stderr
);
980 fputs_unfiltered ("\n", gdb_stderr
);
984 quit_p
= query (_("%s\nQuit this debugging session? "), reason
);
986 else if (problem
->should_quit
== internal_problem_yes
)
988 else if (problem
->should_quit
== internal_problem_no
)
991 internal_error (__FILE__
, __LINE__
, _("bad switch"));
993 if (problem
->should_dump_core
== internal_problem_ask
)
995 if (!can_dump_core (reason
))
999 /* Default (yes/batch case) is to dump core. This leaves a GDB
1000 `dropping' so that it is easier to see that something went
1002 dump_core_p
= query (_("%s\nCreate a core file of GDB? "), reason
);
1005 else if (problem
->should_dump_core
== internal_problem_yes
)
1006 dump_core_p
= can_dump_core (reason
);
1007 else if (problem
->should_dump_core
== internal_problem_no
)
1010 internal_error (__FILE__
, __LINE__
, _("bad switch"));
1023 #ifdef HAVE_WORKING_FORK
1033 static struct internal_problem internal_error_problem
= {
1034 "internal-error", internal_problem_ask
, internal_problem_ask
1038 internal_verror (const char *file
, int line
, const char *fmt
, va_list ap
)
1040 internal_vproblem (&internal_error_problem
, file
, line
, fmt
, ap
);
1041 deprecated_throw_reason (RETURN_ERROR
);
1045 internal_error (const char *file
, int line
, const char *string
, ...)
1048 va_start (ap
, string
);
1049 internal_verror (file
, line
, string
, ap
);
1053 static struct internal_problem internal_warning_problem
= {
1054 "internal-warning", internal_problem_ask
, internal_problem_ask
1058 internal_vwarning (const char *file
, int line
, const char *fmt
, va_list ap
)
1060 internal_vproblem (&internal_warning_problem
, file
, line
, fmt
, ap
);
1064 internal_warning (const char *file
, int line
, const char *string
, ...)
1067 va_start (ap
, string
);
1068 internal_vwarning (file
, line
, string
, ap
);
1072 /* Dummy functions to keep add_prefix_cmd happy. */
1075 set_internal_problem_cmd (char *args
, int from_tty
)
1080 show_internal_problem_cmd (char *args
, int from_tty
)
1084 /* When GDB reports an internal problem (error or warning) it gives
1085 the user the opportunity to quit GDB and/or create a core file of
1086 the current debug session. This function registers a few commands
1087 that make it possible to specify that GDB should always or never
1088 quit or create a core file, without asking. The commands look
1091 maint set PROBLEM-NAME quit ask|yes|no
1092 maint show PROBLEM-NAME quit
1093 maint set PROBLEM-NAME corefile ask|yes|no
1094 maint show PROBLEM-NAME corefile
1096 Where PROBLEM-NAME is currently "internal-error" or
1097 "internal-warning". */
1100 add_internal_problem_command (struct internal_problem
*problem
)
1102 struct cmd_list_element
**set_cmd_list
;
1103 struct cmd_list_element
**show_cmd_list
;
1107 set_cmd_list
= xmalloc (sizeof (*set_cmd_list
));
1108 show_cmd_list
= xmalloc (sizeof (*set_cmd_list
));
1109 *set_cmd_list
= NULL
;
1110 *show_cmd_list
= NULL
;
1112 set_doc
= xstrprintf (_("Configure what GDB does when %s is detected."),
1115 show_doc
= xstrprintf (_("Show what GDB does when %s is detected."),
1118 add_prefix_cmd ((char*) problem
->name
,
1119 class_maintenance
, set_internal_problem_cmd
, set_doc
,
1121 concat ("maintenance set ", problem
->name
, " ", NULL
),
1122 0/*allow-unknown*/, &maintenance_set_cmdlist
);
1124 add_prefix_cmd ((char*) problem
->name
,
1125 class_maintenance
, show_internal_problem_cmd
, show_doc
,
1127 concat ("maintenance show ", problem
->name
, " ", NULL
),
1128 0/*allow-unknown*/, &maintenance_show_cmdlist
);
1130 set_doc
= xstrprintf (_("\
1131 Set whether GDB should quit when an %s is detected"),
1133 show_doc
= xstrprintf (_("\
1134 Show whether GDB will quit when an %s is detected"),
1136 add_setshow_enum_cmd ("quit", class_maintenance
,
1137 internal_problem_modes
,
1138 &problem
->should_quit
,
1141 NULL
, /* help_doc */
1143 NULL
, /* showfunc */
1150 set_doc
= xstrprintf (_("\
1151 Set whether GDB should create a core file of GDB when %s is detected"),
1153 show_doc
= xstrprintf (_("\
1154 Show whether GDB will create a core file of GDB when %s is detected"),
1156 add_setshow_enum_cmd ("corefile", class_maintenance
,
1157 internal_problem_modes
,
1158 &problem
->should_dump_core
,
1161 NULL
, /* help_doc */
1163 NULL
, /* showfunc */
1171 /* Print the system error message for errno, and also mention STRING
1172 as the file name for which the error was encountered.
1173 Then return to command level. */
1176 perror_with_name (const char *string
)
1181 err
= safe_strerror (errno
);
1182 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
1183 strcpy (combined
, string
);
1184 strcat (combined
, ": ");
1185 strcat (combined
, err
);
1187 /* I understand setting these is a matter of taste. Still, some people
1188 may clear errno but not know about bfd_error. Doing this here is not
1190 bfd_set_error (bfd_error_no_error
);
1193 error (_("%s."), combined
);
1196 /* Print the system error message for ERRCODE, and also mention STRING
1197 as the file name for which the error was encountered. */
1200 print_sys_errmsg (const char *string
, int errcode
)
1205 err
= safe_strerror (errcode
);
1206 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
1207 strcpy (combined
, string
);
1208 strcat (combined
, ": ");
1209 strcat (combined
, err
);
1211 /* We want anything which was printed on stdout to come out first, before
1213 gdb_flush (gdb_stdout
);
1214 fprintf_unfiltered (gdb_stderr
, "%s.\n", combined
);
1217 /* Control C eventually causes this to be called, at a convenient time. */
1223 /* No steenking SIGINT will ever be coming our way when the
1224 program is resumed. Don't lie. */
1228 /* If there is no terminal switching for this target, then we can't
1229 possibly get screwed by the lack of job control. */
1230 || current_target
.to_terminal_ours
== NULL
)
1233 fatal ("Quit (expect signal SIGINT when the program is resumed)");
1238 /* Called when a memory allocation fails, with the number of bytes of
1239 memory requested in SIZE. */
1246 internal_error (__FILE__
, __LINE__
,
1247 _("virtual memory exhausted: can't allocate %ld bytes."),
1252 internal_error (__FILE__
, __LINE__
, _("virtual memory exhausted."));
1256 /* The xmalloc() (libiberty.h) family of memory management routines.
1258 These are like the ISO-C malloc() family except that they implement
1259 consistent semantics and guard against typical memory management
1262 /* NOTE: These are declared using PTR to ensure consistency with
1263 "libiberty.h". xfree() is GDB local. */
1266 xmalloc (size_t size
)
1270 /* See libiberty/xmalloc.c. This function need's to match that's
1271 semantics. It never returns NULL. */
1275 val
= malloc (size
); /* ARI: malloc */
1283 xzalloc (size_t size
)
1285 return xcalloc (1, size
);
1289 xrealloc (PTR ptr
, size_t size
) /* ARI: PTR */
1293 /* See libiberty/xmalloc.c. This function need's to match that's
1294 semantics. It never returns NULL. */
1299 val
= realloc (ptr
, size
); /* ARI: realloc */
1301 val
= malloc (size
); /* ARI: malloc */
1309 xcalloc (size_t number
, size_t size
)
1313 /* See libiberty/xmalloc.c. This function need's to match that's
1314 semantics. It never returns NULL. */
1315 if (number
== 0 || size
== 0)
1321 mem
= calloc (number
, size
); /* ARI: xcalloc */
1323 nomem (number
* size
);
1332 free (ptr
); /* ARI: free */
1336 /* Like asprintf/vasprintf but get an internal_error if the call
1340 xstrprintf (const char *format
, ...)
1344 va_start (args
, format
);
1345 ret
= xstrvprintf (format
, args
);
1351 xasprintf (char **ret
, const char *format
, ...)
1354 va_start (args
, format
);
1355 (*ret
) = xstrvprintf (format
, args
);
1360 xvasprintf (char **ret
, const char *format
, va_list ap
)
1362 (*ret
) = xstrvprintf (format
, ap
);
1366 xstrvprintf (const char *format
, va_list ap
)
1369 int status
= vasprintf (&ret
, format
, ap
);
1370 /* NULL is returned when there was a memory allocation problem, or
1371 any other error (for instance, a bad format string). A negative
1372 status (the printed length) with a non-NULL buffer should never
1373 happen, but just to be sure. */
1374 if (ret
== NULL
|| status
< 0)
1375 internal_error (__FILE__
, __LINE__
, _("vasprintf call failed"));
1380 xsnprintf (char *str
, size_t size
, const char *format
, ...)
1385 va_start (args
, format
);
1386 ret
= vsnprintf (str
, size
, format
, args
);
1387 gdb_assert (ret
< size
);
1393 /* My replacement for the read system call.
1394 Used like `read' but keeps going if `read' returns too soon. */
1397 myread (int desc
, char *addr
, int len
)
1404 val
= read (desc
, addr
, len
);
1408 return orglen
- len
;
1415 /* Make a copy of the string at PTR with SIZE characters
1416 (and add a null character at the end in the copy).
1417 Uses malloc to get the space. Returns the address of the copy. */
1420 savestring (const char *ptr
, size_t size
)
1422 char *p
= (char *) xmalloc (size
+ 1);
1423 memcpy (p
, ptr
, size
);
1429 print_spaces (int n
, struct ui_file
*file
)
1431 fputs_unfiltered (n_spaces (n
), file
);
1434 /* Print a host address. */
1437 gdb_print_host_address (const void *addr
, struct ui_file
*stream
)
1439 fprintf_filtered (stream
, "%s", host_address_to_string (addr
));
1443 /* This function supports the query, nquery, and yquery functions.
1444 Ask user a y-or-n question and return 0 if answer is no, 1 if
1445 answer is yes, or default the answer to the specified default
1446 (for yquery or nquery). DEFCHAR may be 'y' or 'n' to provide a
1447 default answer, or '\0' for no default.
1448 CTLSTR is the control string and should end in "? ". It should
1449 not say how to answer, because we do that.
1450 ARGS are the arguments passed along with the CTLSTR argument to
1453 static int ATTR_FORMAT (printf
, 1, 0)
1454 defaulted_query (const char *ctlstr
, const char defchar
, va_list args
)
1460 char def_answer
, not_def_answer
;
1461 char *y_string
, *n_string
, *question
;
1463 /* Set up according to which answer is the default. */
1464 if (defchar
== '\0')
1468 not_def_answer
= 'N';
1472 else if (defchar
== 'y')
1476 not_def_answer
= 'N';
1484 not_def_answer
= 'Y';
1489 /* Automatically answer the default value if the user did not want
1490 prompts or the command was issued with the server prefix. */
1491 if (! caution
|| server_command
)
1494 /* If input isn't coming from the user directly, just say what
1495 question we're asking, and then answer the default automatically. This
1496 way, important error messages don't get lost when talking to GDB
1498 if (! input_from_terminal_p ())
1501 vfprintf_filtered (gdb_stdout
, ctlstr
, args
);
1503 printf_filtered (_("(%s or %s) [answered %c; input not from terminal]\n"),
1504 y_string
, n_string
, def_answer
);
1505 gdb_flush (gdb_stdout
);
1510 if (deprecated_query_hook
)
1512 return deprecated_query_hook (ctlstr
, args
);
1515 /* Format the question outside of the loop, to avoid reusing args. */
1516 question
= xstrvprintf (ctlstr
, args
);
1520 wrap_here (""); /* Flush any buffered output */
1521 gdb_flush (gdb_stdout
);
1523 if (annotation_level
> 1)
1524 printf_filtered (("\n\032\032pre-query\n"));
1526 fputs_filtered (question
, gdb_stdout
);
1527 printf_filtered (_("(%s or %s) "), y_string
, n_string
);
1529 if (annotation_level
> 1)
1530 printf_filtered (("\n\032\032query\n"));
1533 gdb_flush (gdb_stdout
);
1535 answer
= fgetc (stdin
);
1537 /* We expect fgetc to block until a character is read. But
1538 this may not be the case if the terminal was opened with
1539 the NONBLOCK flag. In that case, if there is nothing to
1540 read on stdin, fgetc returns EOF, but also sets the error
1541 condition flag on stdin and errno to EAGAIN. With a true
1542 EOF, stdin's error condition flag is not set.
1544 A situation where this behavior was observed is a pseudo
1546 while (answer
== EOF
&& ferror (stdin
) && errno
== EAGAIN
)
1548 /* Not a real EOF. Wait a little while and try again until
1549 we read something. */
1552 answer
= fgetc (stdin
);
1555 clearerr (stdin
); /* in case of C-d */
1556 if (answer
== EOF
) /* C-d */
1558 printf_filtered ("EOF [assumed %c]\n", def_answer
);
1562 /* Eat rest of input line, to EOF or newline */
1566 ans2
= fgetc (stdin
);
1569 while (ans2
!= EOF
&& ans2
!= '\n' && ans2
!= '\r');
1573 /* Check answer. For the non-default, the user must specify
1574 the non-default explicitly. */
1575 if (answer
== not_def_answer
)
1577 retval
= !def_value
;
1580 /* Otherwise, if a default was specified, the user may either
1581 specify the required input or have it default by entering
1583 if (answer
== def_answer
1584 || (defchar
!= '\0' &&
1585 (answer
== '\n' || answer
== '\r' || answer
== EOF
)))
1590 /* Invalid entries are not defaulted and require another selection. */
1591 printf_filtered (_("Please answer %s or %s.\n"),
1592 y_string
, n_string
);
1596 if (annotation_level
> 1)
1597 printf_filtered (("\n\032\032post-query\n"));
1602 /* Ask user a y-or-n question and return 0 if answer is no, 1 if
1603 answer is yes, or 0 if answer is defaulted.
1604 Takes three args which are given to printf to print the question.
1605 The first, a control string, should end in "? ".
1606 It should not say how to answer, because we do that. */
1609 nquery (const char *ctlstr
, ...)
1613 va_start (args
, ctlstr
);
1614 return defaulted_query (ctlstr
, 'n', args
);
1618 /* Ask user a y-or-n question and return 0 if answer is no, 1 if
1619 answer is yes, or 1 if answer is defaulted.
1620 Takes three args which are given to printf to print the question.
1621 The first, a control string, should end in "? ".
1622 It should not say how to answer, because we do that. */
1625 yquery (const char *ctlstr
, ...)
1629 va_start (args
, ctlstr
);
1630 return defaulted_query (ctlstr
, 'y', args
);
1634 /* Ask user a y-or-n question and return 1 iff answer is yes.
1635 Takes three args which are given to printf to print the question.
1636 The first, a control string, should end in "? ".
1637 It should not say how to answer, because we do that. */
1640 query (const char *ctlstr
, ...)
1644 va_start (args
, ctlstr
);
1645 return defaulted_query (ctlstr
, '\0', args
);
1649 /* A helper for parse_escape that converts a host character to a
1650 target character. C is the host character. If conversion is
1651 possible, then the target character is stored in *TARGET_C and the
1652 function returns 1. Otherwise, the function returns 0. */
1655 host_char_to_target (int c
, int *target_c
)
1657 struct obstack host_data
;
1659 struct cleanup
*cleanups
;
1662 obstack_init (&host_data
);
1663 cleanups
= make_cleanup_obstack_free (&host_data
);
1665 convert_between_encodings (target_charset (), host_charset (),
1666 &the_char
, 1, 1, &host_data
, translit_none
);
1668 if (obstack_object_size (&host_data
) == 1)
1671 *target_c
= *(char *) obstack_base (&host_data
);
1674 do_cleanups (cleanups
);
1678 /* Parse a C escape sequence. STRING_PTR points to a variable
1679 containing a pointer to the string to parse. That pointer
1680 should point to the character after the \. That pointer
1681 is updated past the characters we use. The value of the
1682 escape sequence is returned.
1684 A negative value means the sequence \ newline was seen,
1685 which is supposed to be equivalent to nothing at all.
1687 If \ is followed by a null character, we return a negative
1688 value and leave the string pointer pointing at the null character.
1690 If \ is followed by 000, we return 0 and leave the string pointer
1691 after the zeros. A value of 0 does not mean end of string. */
1694 parse_escape (char **string_ptr
)
1696 int target_char
= -2; /* initialize to avoid GCC warnings */
1697 int c
= *(*string_ptr
)++;
1715 int i
= host_hex_value (c
);
1720 if (isdigit (c
) && c
!= '8' && c
!= '9')
1724 i
+= host_hex_value (c
);
1760 if (!host_char_to_target (c
, &target_char
))
1762 ("The escape sequence `\%c' is equivalent to plain `%c', which"
1763 " has no equivalent\n" "in the `%s' character set.", c
, c
,
1768 /* Print the character C on STREAM as part of the contents of a literal
1769 string whose delimiter is QUOTER. Note that this routine should only
1770 be call for printing things which are independent of the language
1771 of the program being debugged. */
1774 printchar (int c
, void (*do_fputs
) (const char *, struct ui_file
*),
1775 void (*do_fprintf
) (struct ui_file
*, const char *, ...)
1776 ATTRIBUTE_FPTR_PRINTF_2
, struct ui_file
*stream
, int quoter
)
1779 c
&= 0xFF; /* Avoid sign bit follies */
1781 if (c
< 0x20 || /* Low control chars */
1782 (c
>= 0x7F && c
< 0xA0) || /* DEL, High controls */
1783 (sevenbit_strings
&& c
>= 0x80))
1784 { /* high order bit set */
1788 do_fputs ("\\n", stream
);
1791 do_fputs ("\\b", stream
);
1794 do_fputs ("\\t", stream
);
1797 do_fputs ("\\f", stream
);
1800 do_fputs ("\\r", stream
);
1803 do_fputs ("\\e", stream
);
1806 do_fputs ("\\a", stream
);
1809 do_fprintf (stream
, "\\%.3o", (unsigned int) c
);
1815 if (c
== '\\' || c
== quoter
)
1816 do_fputs ("\\", stream
);
1817 do_fprintf (stream
, "%c", c
);
1821 /* Print the character C on STREAM as part of the contents of a
1822 literal string whose delimiter is QUOTER. Note that these routines
1823 should only be call for printing things which are independent of
1824 the language of the program being debugged. */
1827 fputstr_filtered (const char *str
, int quoter
, struct ui_file
*stream
)
1830 printchar (*str
++, fputs_filtered
, fprintf_filtered
, stream
, quoter
);
1834 fputstr_unfiltered (const char *str
, int quoter
, struct ui_file
*stream
)
1837 printchar (*str
++, fputs_unfiltered
, fprintf_unfiltered
, stream
, quoter
);
1841 fputstrn_filtered (const char *str
, int n
, int quoter
,
1842 struct ui_file
*stream
)
1845 for (i
= 0; i
< n
; i
++)
1846 printchar (str
[i
], fputs_filtered
, fprintf_filtered
, stream
, quoter
);
1850 fputstrn_unfiltered (const char *str
, int n
, int quoter
,
1851 struct ui_file
*stream
)
1854 for (i
= 0; i
< n
; i
++)
1855 printchar (str
[i
], fputs_unfiltered
, fprintf_unfiltered
, stream
, quoter
);
1859 /* Number of lines per page or UINT_MAX if paging is disabled. */
1860 static unsigned int lines_per_page
;
1862 show_lines_per_page (struct ui_file
*file
, int from_tty
,
1863 struct cmd_list_element
*c
, const char *value
)
1865 fprintf_filtered (file
, _("\
1866 Number of lines gdb thinks are in a page is %s.\n"),
1870 /* Number of chars per line or UINT_MAX if line folding is disabled. */
1871 static unsigned int chars_per_line
;
1873 show_chars_per_line (struct ui_file
*file
, int from_tty
,
1874 struct cmd_list_element
*c
, const char *value
)
1876 fprintf_filtered (file
, _("\
1877 Number of characters gdb thinks are in a line is %s.\n"),
1881 /* Current count of lines printed on this page, chars on this line. */
1882 static unsigned int lines_printed
, chars_printed
;
1884 /* Buffer and start column of buffered text, for doing smarter word-
1885 wrapping. When someone calls wrap_here(), we start buffering output
1886 that comes through fputs_filtered(). If we see a newline, we just
1887 spit it out and forget about the wrap_here(). If we see another
1888 wrap_here(), we spit it out and remember the newer one. If we see
1889 the end of the line, we spit out a newline, the indent, and then
1890 the buffered output. */
1892 /* Malloc'd buffer with chars_per_line+2 bytes. Contains characters which
1893 are waiting to be output (they have already been counted in chars_printed).
1894 When wrap_buffer[0] is null, the buffer is empty. */
1895 static char *wrap_buffer
;
1897 /* Pointer in wrap_buffer to the next character to fill. */
1898 static char *wrap_pointer
;
1900 /* String to indent by if the wrap occurs. Must not be NULL if wrap_column
1902 static char *wrap_indent
;
1904 /* Column number on the screen where wrap_buffer begins, or 0 if wrapping
1905 is not in effect. */
1906 static int wrap_column
;
1909 /* Inialize the number of lines per page and chars per line. */
1912 init_page_info (void)
1915 if (!tui_get_command_dimension (&chars_per_line
, &lines_per_page
))
1920 #if defined(__GO32__)
1921 rows
= ScreenRows ();
1922 cols
= ScreenCols ();
1923 lines_per_page
= rows
;
1924 chars_per_line
= cols
;
1926 /* Make sure Readline has initialized its terminal settings. */
1927 rl_reset_terminal (NULL
);
1929 /* Get the screen size from Readline. */
1930 rl_get_screen_size (&rows
, &cols
);
1931 lines_per_page
= rows
;
1932 chars_per_line
= cols
;
1934 /* Readline should have fetched the termcap entry for us. */
1935 if (tgetnum ("li") < 0 || getenv ("EMACS"))
1937 /* The number of lines per page is not mentioned in the
1938 terminal description. This probably means that paging is
1939 not useful (e.g. emacs shell window), so disable paging. */
1940 lines_per_page
= UINT_MAX
;
1943 /* FIXME: Get rid of this junk. */
1944 #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER)
1945 SIGWINCH_HANDLER (SIGWINCH
);
1948 /* If the output is not a terminal, don't paginate it. */
1949 if (!ui_file_isatty (gdb_stdout
))
1950 lines_per_page
= UINT_MAX
;
1958 /* Set the screen size based on LINES_PER_PAGE and CHARS_PER_LINE. */
1961 set_screen_size (void)
1963 int rows
= lines_per_page
;
1964 int cols
= chars_per_line
;
1972 /* Update Readline's idea of the terminal size. */
1973 rl_set_screen_size (rows
, cols
);
1976 /* Reinitialize WRAP_BUFFER according to the current value of
1982 if (chars_per_line
== 0)
1987 wrap_buffer
= (char *) xmalloc (chars_per_line
+ 2);
1988 wrap_buffer
[0] = '\0';
1991 wrap_buffer
= (char *) xrealloc (wrap_buffer
, chars_per_line
+ 2);
1992 wrap_pointer
= wrap_buffer
; /* Start it at the beginning. */
1996 set_width_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
2003 set_height_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
2008 /* Wait, so the user can read what's on the screen. Prompt the user
2009 to continue by pressing RETURN. */
2012 prompt_for_continue (void)
2015 char cont_prompt
[120];
2017 if (annotation_level
> 1)
2018 printf_unfiltered (("\n\032\032pre-prompt-for-continue\n"));
2020 strcpy (cont_prompt
,
2021 "---Type <return> to continue, or q <return> to quit---");
2022 if (annotation_level
> 1)
2023 strcat (cont_prompt
, "\n\032\032prompt-for-continue\n");
2025 /* We must do this *before* we call gdb_readline, else it will eventually
2026 call us -- thinking that we're trying to print beyond the end of the
2028 reinitialize_more_filter ();
2031 /* On a real operating system, the user can quit with SIGINT.
2034 'q' is provided on all systems so users don't have to change habits
2035 from system to system, and because telling them what to do in
2036 the prompt is more user-friendly than expecting them to think of
2038 /* Call readline, not gdb_readline, because GO32 readline handles control-C
2039 whereas control-C to gdb_readline will cause the user to get dumped
2041 ignore
= gdb_readline_wrapper (cont_prompt
);
2043 if (annotation_level
> 1)
2044 printf_unfiltered (("\n\032\032post-prompt-for-continue\n"));
2049 while (*p
== ' ' || *p
== '\t')
2052 async_request_quit (0);
2057 /* Now we have to do this again, so that GDB will know that it doesn't
2058 need to save the ---Type <return>--- line at the top of the screen. */
2059 reinitialize_more_filter ();
2061 dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */
2064 /* Reinitialize filter; ie. tell it to reset to original values. */
2067 reinitialize_more_filter (void)
2073 /* Indicate that if the next sequence of characters overflows the line,
2074 a newline should be inserted here rather than when it hits the end.
2075 If INDENT is non-null, it is a string to be printed to indent the
2076 wrapped part on the next line. INDENT must remain accessible until
2077 the next call to wrap_here() or until a newline is printed through
2080 If the line is already overfull, we immediately print a newline and
2081 the indentation, and disable further wrapping.
2083 If we don't know the width of lines, but we know the page height,
2084 we must not wrap words, but should still keep track of newlines
2085 that were explicitly printed.
2087 INDENT should not contain tabs, as that will mess up the char count
2088 on the next line. FIXME.
2090 This routine is guaranteed to force out any output which has been
2091 squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be
2092 used to force out output from the wrap_buffer. */
2095 wrap_here (char *indent
)
2097 /* This should have been allocated, but be paranoid anyway. */
2099 internal_error (__FILE__
, __LINE__
, _("failed internal consistency check"));
2103 *wrap_pointer
= '\0';
2104 fputs_unfiltered (wrap_buffer
, gdb_stdout
);
2106 wrap_pointer
= wrap_buffer
;
2107 wrap_buffer
[0] = '\0';
2108 if (chars_per_line
== UINT_MAX
) /* No line overflow checking */
2112 else if (chars_printed
>= chars_per_line
)
2114 puts_filtered ("\n");
2116 puts_filtered (indent
);
2121 wrap_column
= chars_printed
;
2125 wrap_indent
= indent
;
2129 /* Print input string to gdb_stdout, filtered, with wrap,
2130 arranging strings in columns of n chars. String can be
2131 right or left justified in the column. Never prints
2132 trailing spaces. String should never be longer than
2133 width. FIXME: this could be useful for the EXAMINE
2134 command, which currently doesn't tabulate very well */
2137 puts_filtered_tabular (char *string
, int width
, int right
)
2143 gdb_assert (chars_per_line
> 0);
2144 if (chars_per_line
== UINT_MAX
)
2146 fputs_filtered (string
, gdb_stdout
);
2147 fputs_filtered ("\n", gdb_stdout
);
2151 if (((chars_printed
- 1) / width
+ 2) * width
>= chars_per_line
)
2152 fputs_filtered ("\n", gdb_stdout
);
2154 if (width
>= chars_per_line
)
2155 width
= chars_per_line
- 1;
2157 stringlen
= strlen (string
);
2159 if (chars_printed
> 0)
2160 spaces
= width
- (chars_printed
- 1) % width
- 1;
2162 spaces
+= width
- stringlen
;
2164 spacebuf
= alloca (spaces
+ 1);
2165 spacebuf
[spaces
] = '\0';
2167 spacebuf
[spaces
] = ' ';
2169 fputs_filtered (spacebuf
, gdb_stdout
);
2170 fputs_filtered (string
, gdb_stdout
);
2174 /* Ensure that whatever gets printed next, using the filtered output
2175 commands, starts at the beginning of the line. I.E. if there is
2176 any pending output for the current line, flush it and start a new
2177 line. Otherwise do nothing. */
2182 if (chars_printed
> 0)
2184 puts_filtered ("\n");
2189 /* Like fputs but if FILTER is true, pause after every screenful.
2191 Regardless of FILTER can wrap at points other than the final
2192 character of a line.
2194 Unlike fputs, fputs_maybe_filtered does not return a value.
2195 It is OK for LINEBUFFER to be NULL, in which case just don't print
2198 Note that a longjmp to top level may occur in this routine (only if
2199 FILTER is true) (since prompt_for_continue may do so) so this
2200 routine should not be called when cleanups are not in place. */
2203 fputs_maybe_filtered (const char *linebuffer
, struct ui_file
*stream
,
2206 const char *lineptr
;
2208 if (linebuffer
== 0)
2211 /* Don't do any filtering if it is disabled. */
2212 if ((stream
!= gdb_stdout
) || !pagination_enabled
2213 || (lines_per_page
== UINT_MAX
&& chars_per_line
== UINT_MAX
))
2215 fputs_unfiltered (linebuffer
, stream
);
2219 /* Go through and output each character. Show line extension
2220 when this is necessary; prompt user for new page when this is
2223 lineptr
= linebuffer
;
2226 /* Possible new page. */
2227 if (filter
&& (lines_printed
>= lines_per_page
- 1))
2228 prompt_for_continue ();
2230 while (*lineptr
&& *lineptr
!= '\n')
2232 /* Print a single line. */
2233 if (*lineptr
== '\t')
2236 *wrap_pointer
++ = '\t';
2238 fputc_unfiltered ('\t', stream
);
2239 /* Shifting right by 3 produces the number of tab stops
2240 we have already passed, and then adding one and
2241 shifting left 3 advances to the next tab stop. */
2242 chars_printed
= ((chars_printed
>> 3) + 1) << 3;
2248 *wrap_pointer
++ = *lineptr
;
2250 fputc_unfiltered (*lineptr
, stream
);
2255 if (chars_printed
>= chars_per_line
)
2257 unsigned int save_chars
= chars_printed
;
2261 /* If we aren't actually wrapping, don't output newline --
2262 if chars_per_line is right, we probably just overflowed
2263 anyway; if it's wrong, let us keep going. */
2265 fputc_unfiltered ('\n', stream
);
2267 /* Possible new page. */
2268 if (lines_printed
>= lines_per_page
- 1)
2269 prompt_for_continue ();
2271 /* Now output indentation and wrapped string */
2274 fputs_unfiltered (wrap_indent
, stream
);
2275 *wrap_pointer
= '\0'; /* Null-terminate saved stuff */
2276 fputs_unfiltered (wrap_buffer
, stream
); /* and eject it */
2277 /* FIXME, this strlen is what prevents wrap_indent from
2278 containing tabs. However, if we recurse to print it
2279 and count its chars, we risk trouble if wrap_indent is
2280 longer than (the user settable) chars_per_line.
2281 Note also that this can set chars_printed > chars_per_line
2282 if we are printing a long string. */
2283 chars_printed
= strlen (wrap_indent
)
2284 + (save_chars
- wrap_column
);
2285 wrap_pointer
= wrap_buffer
; /* Reset buffer */
2286 wrap_buffer
[0] = '\0';
2287 wrap_column
= 0; /* And disable fancy wrap */
2292 if (*lineptr
== '\n')
2295 wrap_here ((char *) 0); /* Spit out chars, cancel further wraps */
2297 fputc_unfiltered ('\n', stream
);
2304 fputs_filtered (const char *linebuffer
, struct ui_file
*stream
)
2306 fputs_maybe_filtered (linebuffer
, stream
, 1);
2310 putchar_unfiltered (int c
)
2313 ui_file_write (gdb_stdout
, &buf
, 1);
2317 /* Write character C to gdb_stdout using GDB's paging mechanism and return C.
2318 May return nonlocally. */
2321 putchar_filtered (int c
)
2323 return fputc_filtered (c
, gdb_stdout
);
2327 fputc_unfiltered (int c
, struct ui_file
*stream
)
2330 ui_file_write (stream
, &buf
, 1);
2335 fputc_filtered (int c
, struct ui_file
*stream
)
2341 fputs_filtered (buf
, stream
);
2345 /* puts_debug is like fputs_unfiltered, except it prints special
2346 characters in printable fashion. */
2349 puts_debug (char *prefix
, char *string
, char *suffix
)
2353 /* Print prefix and suffix after each line. */
2354 static int new_line
= 1;
2355 static int return_p
= 0;
2356 static char *prev_prefix
= "";
2357 static char *prev_suffix
= "";
2359 if (*string
== '\n')
2362 /* If the prefix is changing, print the previous suffix, a new line,
2363 and the new prefix. */
2364 if ((return_p
|| (strcmp (prev_prefix
, prefix
) != 0)) && !new_line
)
2366 fputs_unfiltered (prev_suffix
, gdb_stdlog
);
2367 fputs_unfiltered ("\n", gdb_stdlog
);
2368 fputs_unfiltered (prefix
, gdb_stdlog
);
2371 /* Print prefix if we printed a newline during the previous call. */
2375 fputs_unfiltered (prefix
, gdb_stdlog
);
2378 prev_prefix
= prefix
;
2379 prev_suffix
= suffix
;
2381 /* Output characters in a printable format. */
2382 while ((ch
= *string
++) != '\0')
2388 fputc_unfiltered (ch
, gdb_stdlog
);
2391 fprintf_unfiltered (gdb_stdlog
, "\\x%02x", ch
& 0xff);
2395 fputs_unfiltered ("\\\\", gdb_stdlog
);
2398 fputs_unfiltered ("\\b", gdb_stdlog
);
2401 fputs_unfiltered ("\\f", gdb_stdlog
);
2405 fputs_unfiltered ("\\n", gdb_stdlog
);
2408 fputs_unfiltered ("\\r", gdb_stdlog
);
2411 fputs_unfiltered ("\\t", gdb_stdlog
);
2414 fputs_unfiltered ("\\v", gdb_stdlog
);
2418 return_p
= ch
== '\r';
2421 /* Print suffix if we printed a newline. */
2424 fputs_unfiltered (suffix
, gdb_stdlog
);
2425 fputs_unfiltered ("\n", gdb_stdlog
);
2430 /* Print a variable number of ARGS using format FORMAT. If this
2431 information is going to put the amount written (since the last call
2432 to REINITIALIZE_MORE_FILTER or the last page break) over the page size,
2433 call prompt_for_continue to get the users permision to continue.
2435 Unlike fprintf, this function does not return a value.
2437 We implement three variants, vfprintf (takes a vararg list and stream),
2438 fprintf (takes a stream to write on), and printf (the usual).
2440 Note also that a longjmp to top level may occur in this routine
2441 (since prompt_for_continue may do so) so this routine should not be
2442 called when cleanups are not in place. */
2445 vfprintf_maybe_filtered (struct ui_file
*stream
, const char *format
,
2446 va_list args
, int filter
)
2449 struct cleanup
*old_cleanups
;
2451 linebuffer
= xstrvprintf (format
, args
);
2452 old_cleanups
= make_cleanup (xfree
, linebuffer
);
2453 fputs_maybe_filtered (linebuffer
, stream
, filter
);
2454 do_cleanups (old_cleanups
);
2459 vfprintf_filtered (struct ui_file
*stream
, const char *format
, va_list args
)
2461 vfprintf_maybe_filtered (stream
, format
, args
, 1);
2465 vfprintf_unfiltered (struct ui_file
*stream
, const char *format
, va_list args
)
2468 struct cleanup
*old_cleanups
;
2470 linebuffer
= xstrvprintf (format
, args
);
2471 old_cleanups
= make_cleanup (xfree
, linebuffer
);
2472 if (debug_timestamp
&& stream
== gdb_stdlog
)
2478 gettimeofday (&tm
, NULL
);
2480 len
= strlen (linebuffer
);
2481 need_nl
= (len
> 0 && linebuffer
[len
- 1] != '\n');
2483 timestamp
= xstrprintf ("%ld:%ld %s%s",
2484 (long) tm
.tv_sec
, (long) tm
.tv_usec
,
2486 need_nl
? "\n": "");
2487 make_cleanup (xfree
, timestamp
);
2488 fputs_unfiltered (timestamp
, stream
);
2491 fputs_unfiltered (linebuffer
, stream
);
2492 do_cleanups (old_cleanups
);
2496 vprintf_filtered (const char *format
, va_list args
)
2498 vfprintf_maybe_filtered (gdb_stdout
, format
, args
, 1);
2502 vprintf_unfiltered (const char *format
, va_list args
)
2504 vfprintf_unfiltered (gdb_stdout
, format
, args
);
2508 fprintf_filtered (struct ui_file
*stream
, const char *format
, ...)
2511 va_start (args
, format
);
2512 vfprintf_filtered (stream
, format
, args
);
2517 fprintf_unfiltered (struct ui_file
*stream
, const char *format
, ...)
2520 va_start (args
, format
);
2521 vfprintf_unfiltered (stream
, format
, args
);
2525 /* Like fprintf_filtered, but prints its result indented.
2526 Called as fprintfi_filtered (spaces, stream, format, ...); */
2529 fprintfi_filtered (int spaces
, struct ui_file
*stream
, const char *format
,
2533 va_start (args
, format
);
2534 print_spaces_filtered (spaces
, stream
);
2536 vfprintf_filtered (stream
, format
, args
);
2542 printf_filtered (const char *format
, ...)
2545 va_start (args
, format
);
2546 vfprintf_filtered (gdb_stdout
, format
, args
);
2552 printf_unfiltered (const char *format
, ...)
2555 va_start (args
, format
);
2556 vfprintf_unfiltered (gdb_stdout
, format
, args
);
2560 /* Like printf_filtered, but prints it's result indented.
2561 Called as printfi_filtered (spaces, format, ...); */
2564 printfi_filtered (int spaces
, const char *format
, ...)
2567 va_start (args
, format
);
2568 print_spaces_filtered (spaces
, gdb_stdout
);
2569 vfprintf_filtered (gdb_stdout
, format
, args
);
2573 /* Easy -- but watch out!
2575 This routine is *not* a replacement for puts()! puts() appends a newline.
2576 This one doesn't, and had better not! */
2579 puts_filtered (const char *string
)
2581 fputs_filtered (string
, gdb_stdout
);
2585 puts_unfiltered (const char *string
)
2587 fputs_unfiltered (string
, gdb_stdout
);
2590 /* Return a pointer to N spaces and a null. The pointer is good
2591 until the next call to here. */
2596 static char *spaces
= 0;
2597 static int max_spaces
= -1;
2603 spaces
= (char *) xmalloc (n
+ 1);
2604 for (t
= spaces
+ n
; t
!= spaces
;)
2610 return spaces
+ max_spaces
- n
;
2613 /* Print N spaces. */
2615 print_spaces_filtered (int n
, struct ui_file
*stream
)
2617 fputs_filtered (n_spaces (n
), stream
);
2620 /* C++/ObjC demangler stuff. */
2622 /* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language
2623 LANG, using demangling args ARG_MODE, and print it filtered to STREAM.
2624 If the name is not mangled, or the language for the name is unknown, or
2625 demangling is off, the name is printed in its "raw" form. */
2628 fprintf_symbol_filtered (struct ui_file
*stream
, char *name
,
2629 enum language lang
, int arg_mode
)
2635 /* If user wants to see raw output, no problem. */
2638 fputs_filtered (name
, stream
);
2642 demangled
= language_demangle (language_def (lang
), name
, arg_mode
);
2643 fputs_filtered (demangled
? demangled
: name
, stream
);
2644 if (demangled
!= NULL
)
2652 /* Do a strcmp() type operation on STRING1 and STRING2, ignoring any
2653 differences in whitespace. Returns 0 if they match, non-zero if they
2654 don't (slightly different than strcmp()'s range of return values).
2656 As an extra hack, string1=="FOO(ARGS)" matches string2=="FOO".
2657 This "feature" is useful when searching for matching C++ function names
2658 (such as if the user types 'break FOO', where FOO is a mangled C++
2662 strcmp_iw (const char *string1
, const char *string2
)
2664 while ((*string1
!= '\0') && (*string2
!= '\0'))
2666 while (isspace (*string1
))
2670 while (isspace (*string2
))
2674 if (*string1
!= *string2
)
2678 if (*string1
!= '\0')
2684 return (*string1
!= '\0' && *string1
!= '(') || (*string2
!= '\0');
2687 /* This is like strcmp except that it ignores whitespace and treats
2688 '(' as the first non-NULL character in terms of ordering. Like
2689 strcmp (and unlike strcmp_iw), it returns negative if STRING1 <
2690 STRING2, 0 if STRING2 = STRING2, and positive if STRING1 > STRING2
2691 according to that ordering.
2693 If a list is sorted according to this function and if you want to
2694 find names in the list that match some fixed NAME according to
2695 strcmp_iw(LIST_ELT, NAME), then the place to start looking is right
2696 where this function would put NAME.
2698 Here are some examples of why using strcmp to sort is a bad idea:
2702 Say your partial symtab contains: "foo<char *>", "goo". Then, if
2703 we try to do a search for "foo<char*>", strcmp will locate this
2704 after "foo<char *>" and before "goo". Then lookup_partial_symbol
2705 will start looking at strings beginning with "goo", and will never
2706 see the correct match of "foo<char *>".
2708 Parenthesis example:
2710 In practice, this is less like to be an issue, but I'll give it a
2711 shot. Let's assume that '$' is a legitimate character to occur in
2712 symbols. (Which may well even be the case on some systems.) Then
2713 say that the partial symbol table contains "foo$" and "foo(int)".
2714 strcmp will put them in this order, since '$' < '('. Now, if the
2715 user searches for "foo", then strcmp will sort "foo" before "foo$".
2716 Then lookup_partial_symbol will notice that strcmp_iw("foo$",
2717 "foo") is false, so it won't proceed to the actual match of
2718 "foo(int)" with "foo". */
2721 strcmp_iw_ordered (const char *string1
, const char *string2
)
2723 while ((*string1
!= '\0') && (*string2
!= '\0'))
2725 while (isspace (*string1
))
2729 while (isspace (*string2
))
2733 if (*string1
!= *string2
)
2737 if (*string1
!= '\0')
2746 /* Characters are non-equal unless they're both '\0'; we want to
2747 make sure we get the comparison right according to our
2748 comparison in the cases where one of them is '\0' or '('. */
2750 if (*string2
== '\0')
2755 if (*string2
== '\0')
2760 if (*string2
== '(')
2763 return *string1
- *string2
;
2767 /* A simple comparison function with opposite semantics to strcmp. */
2770 streq (const char *lhs
, const char *rhs
)
2772 return !strcmp (lhs
, rhs
);
2778 ** Answer whether string_to_compare is a full or partial match to
2779 ** template_string. The partial match must be in sequence starting
2783 subset_compare (char *string_to_compare
, char *template_string
)
2786 if (template_string
!= (char *) NULL
&& string_to_compare
!= (char *) NULL
2787 && strlen (string_to_compare
) <= strlen (template_string
))
2790 (template_string
, string_to_compare
, strlen (string_to_compare
)) == 0);
2797 pagination_on_command (char *arg
, int from_tty
)
2799 pagination_enabled
= 1;
2803 pagination_off_command (char *arg
, int from_tty
)
2805 pagination_enabled
= 0;
2809 show_debug_timestamp (struct ui_file
*file
, int from_tty
,
2810 struct cmd_list_element
*c
, const char *value
)
2812 fprintf_filtered (file
, _("Timestamping debugging messages is %s.\n"), value
);
2817 initialize_utils (void)
2819 struct cmd_list_element
*c
;
2821 add_setshow_uinteger_cmd ("width", class_support
, &chars_per_line
, _("\
2822 Set number of characters gdb thinks are in a line."), _("\
2823 Show number of characters gdb thinks are in a line."), NULL
,
2825 show_chars_per_line
,
2826 &setlist
, &showlist
);
2828 add_setshow_uinteger_cmd ("height", class_support
, &lines_per_page
, _("\
2829 Set number of lines gdb thinks are in a page."), _("\
2830 Show number of lines gdb thinks are in a page."), NULL
,
2832 show_lines_per_page
,
2833 &setlist
, &showlist
);
2837 add_setshow_boolean_cmd ("demangle", class_support
, &demangle
, _("\
2838 Set demangling of encoded C++/ObjC names when displaying symbols."), _("\
2839 Show demangling of encoded C++/ObjC names when displaying symbols."), NULL
,
2842 &setprintlist
, &showprintlist
);
2844 add_setshow_boolean_cmd ("pagination", class_support
,
2845 &pagination_enabled
, _("\
2846 Set state of pagination."), _("\
2847 Show state of pagination."), NULL
,
2849 show_pagination_enabled
,
2850 &setlist
, &showlist
);
2854 add_com ("am", class_support
, pagination_on_command
,
2855 _("Enable pagination"));
2856 add_com ("sm", class_support
, pagination_off_command
,
2857 _("Disable pagination"));
2860 add_setshow_boolean_cmd ("sevenbit-strings", class_support
,
2861 &sevenbit_strings
, _("\
2862 Set printing of 8-bit characters in strings as \\nnn."), _("\
2863 Show printing of 8-bit characters in strings as \\nnn."), NULL
,
2865 show_sevenbit_strings
,
2866 &setprintlist
, &showprintlist
);
2868 add_setshow_boolean_cmd ("asm-demangle", class_support
, &asm_demangle
, _("\
2869 Set demangling of C++/ObjC names in disassembly listings."), _("\
2870 Show demangling of C++/ObjC names in disassembly listings."), NULL
,
2873 &setprintlist
, &showprintlist
);
2875 add_setshow_boolean_cmd ("timestamp", class_maintenance
,
2876 &debug_timestamp
, _("\
2877 Set timestamping of debugging messages."), _("\
2878 Show timestamping of debugging messages."), _("\
2879 When set, debugging messages will be marked with seconds and microseconds."),
2881 show_debug_timestamp
,
2882 &setdebuglist
, &showdebuglist
);
2885 /* Machine specific function to handle SIGWINCH signal. */
2887 #ifdef SIGWINCH_HANDLER_BODY
2888 SIGWINCH_HANDLER_BODY
2890 /* print routines to handle variable size regs, etc. */
2891 /* temporary storage using circular buffer */
2897 static char buf
[NUMCELLS
][CELLSIZE
];
2898 static int cell
= 0;
2899 if (++cell
>= NUMCELLS
)
2905 paddress (struct gdbarch
*gdbarch
, CORE_ADDR addr
)
2907 /* Truncate address to the size of a target address, avoiding shifts
2908 larger or equal than the width of a CORE_ADDR. The local
2909 variable ADDR_BIT stops the compiler reporting a shift overflow
2910 when it won't occur. */
2911 /* NOTE: This assumes that the significant address information is
2912 kept in the least significant bits of ADDR - the upper bits were
2913 either zero or sign extended. Should gdbarch_address_to_pointer or
2914 some ADDRESS_TO_PRINTABLE() be used to do the conversion? */
2916 int addr_bit
= gdbarch_addr_bit (gdbarch
);
2918 if (addr_bit
< (sizeof (CORE_ADDR
) * HOST_CHAR_BIT
))
2919 addr
&= ((CORE_ADDR
) 1 << addr_bit
) - 1;
2920 return hex_string (addr
);
2924 decimal2str (char *sign
, ULONGEST addr
, int width
)
2926 /* Steal code from valprint.c:print_decimal(). Should this worry
2927 about the real size of addr as the above does? */
2928 unsigned long temp
[3];
2929 char *str
= get_cell ();
2934 temp
[i
] = addr
% (1000 * 1000 * 1000);
2935 addr
/= (1000 * 1000 * 1000);
2939 while (addr
!= 0 && i
< (sizeof (temp
) / sizeof (temp
[0])));
2948 xsnprintf (str
, CELLSIZE
, "%s%0*lu", sign
, width
, temp
[0]);
2951 xsnprintf (str
, CELLSIZE
, "%s%0*lu%09lu", sign
, width
,
2955 xsnprintf (str
, CELLSIZE
, "%s%0*lu%09lu%09lu", sign
, width
,
2956 temp
[2], temp
[1], temp
[0]);
2959 internal_error (__FILE__
, __LINE__
,
2960 _("failed internal consistency check"));
2967 octal2str (ULONGEST addr
, int width
)
2969 unsigned long temp
[3];
2970 char *str
= get_cell ();
2975 temp
[i
] = addr
% (0100000 * 0100000);
2976 addr
/= (0100000 * 0100000);
2980 while (addr
!= 0 && i
< (sizeof (temp
) / sizeof (temp
[0])));
2990 xsnprintf (str
, CELLSIZE
, "%*o", width
, 0);
2992 xsnprintf (str
, CELLSIZE
, "0%0*lo", width
, temp
[0]);
2995 xsnprintf (str
, CELLSIZE
, "0%0*lo%010lo", width
, temp
[1], temp
[0]);
2998 xsnprintf (str
, CELLSIZE
, "0%0*lo%010lo%010lo", width
,
2999 temp
[2], temp
[1], temp
[0]);
3002 internal_error (__FILE__
, __LINE__
,
3003 _("failed internal consistency check"));
3010 pulongest (ULONGEST u
)
3012 return decimal2str ("", u
, 0);
3016 plongest (LONGEST l
)
3019 return decimal2str ("-", -l
, 0);
3021 return decimal2str ("", l
, 0);
3024 /* Eliminate warning from compiler on 32-bit systems. */
3025 static int thirty_two
= 32;
3028 phex (ULONGEST l
, int sizeof_l
)
3036 xsnprintf (str
, CELLSIZE
, "%08lx%08lx",
3037 (unsigned long) (l
>> thirty_two
),
3038 (unsigned long) (l
& 0xffffffff));
3042 xsnprintf (str
, CELLSIZE
, "%08lx", (unsigned long) l
);
3046 xsnprintf (str
, CELLSIZE
, "%04x", (unsigned short) (l
& 0xffff));
3049 str
= phex (l
, sizeof (l
));
3057 phex_nz (ULONGEST l
, int sizeof_l
)
3065 unsigned long high
= (unsigned long) (l
>> thirty_two
);
3068 xsnprintf (str
, CELLSIZE
, "%lx",
3069 (unsigned long) (l
& 0xffffffff));
3071 xsnprintf (str
, CELLSIZE
, "%lx%08lx", high
,
3072 (unsigned long) (l
& 0xffffffff));
3077 xsnprintf (str
, CELLSIZE
, "%lx", (unsigned long) l
);
3081 xsnprintf (str
, CELLSIZE
, "%x", (unsigned short) (l
& 0xffff));
3084 str
= phex_nz (l
, sizeof (l
));
3091 /* Converts a LONGEST to a C-format hexadecimal literal and stores it
3092 in a static string. Returns a pointer to this string. */
3094 hex_string (LONGEST num
)
3096 char *result
= get_cell ();
3097 xsnprintf (result
, CELLSIZE
, "0x%s", phex_nz (num
, sizeof (num
)));
3101 /* Converts a LONGEST number to a C-format hexadecimal literal and
3102 stores it in a static string. Returns a pointer to this string
3103 that is valid until the next call. The number is padded on the
3104 left with 0s to at least WIDTH characters. */
3106 hex_string_custom (LONGEST num
, int width
)
3108 char *result
= get_cell ();
3109 char *result_end
= result
+ CELLSIZE
- 1;
3110 const char *hex
= phex_nz (num
, sizeof (num
));
3111 int hex_len
= strlen (hex
);
3113 if (hex_len
> width
)
3115 if (width
+ 2 >= CELLSIZE
)
3116 internal_error (__FILE__
, __LINE__
,
3117 _("hex_string_custom: insufficient space to store result"));
3119 strcpy (result_end
- width
- 2, "0x");
3120 memset (result_end
- width
, '0', width
);
3121 strcpy (result_end
- hex_len
, hex
);
3122 return result_end
- width
- 2;
3125 /* Convert VAL to a numeral in the given radix. For
3126 * radix 10, IS_SIGNED may be true, indicating a signed quantity;
3127 * otherwise VAL is interpreted as unsigned. If WIDTH is supplied,
3128 * it is the minimum width (0-padded if needed). USE_C_FORMAT means
3129 * to use C format in all cases. If it is false, then 'x'
3130 * and 'o' formats do not include a prefix (0x or leading 0). */
3133 int_string (LONGEST val
, int radix
, int is_signed
, int width
,
3142 result
= hex_string (val
);
3144 result
= hex_string_custom (val
, width
);
3151 if (is_signed
&& val
< 0)
3152 return decimal2str ("-", -val
, width
);
3154 return decimal2str ("", val
, width
);
3158 char *result
= octal2str (val
, width
);
3159 if (use_c_format
|| val
== 0)
3165 internal_error (__FILE__
, __LINE__
,
3166 _("failed internal consistency check"));
3170 /* Convert a CORE_ADDR into a string. */
3172 core_addr_to_string (const CORE_ADDR addr
)
3174 char *str
= get_cell ();
3176 strcat (str
, phex (addr
, sizeof (addr
)));
3181 core_addr_to_string_nz (const CORE_ADDR addr
)
3183 char *str
= get_cell ();
3185 strcat (str
, phex_nz (addr
, sizeof (addr
)));
3189 /* Convert a string back into a CORE_ADDR. */
3191 string_to_core_addr (const char *my_string
)
3195 if (my_string
[0] == '0' && tolower (my_string
[1]) == 'x')
3197 /* Assume that it is in hex. */
3199 for (i
= 2; my_string
[i
] != '\0'; i
++)
3201 if (isdigit (my_string
[i
]))
3202 addr
= (my_string
[i
] - '0') + (addr
* 16);
3203 else if (isxdigit (my_string
[i
]))
3204 addr
= (tolower (my_string
[i
]) - 'a' + 0xa) + (addr
* 16);
3206 error (_("invalid hex \"%s\""), my_string
);
3211 /* Assume that it is in decimal. */
3213 for (i
= 0; my_string
[i
] != '\0'; i
++)
3215 if (isdigit (my_string
[i
]))
3216 addr
= (my_string
[i
] - '0') + (addr
* 10);
3218 error (_("invalid decimal \"%s\""), my_string
);
3226 host_address_to_string (const void *addr
)
3228 char *str
= get_cell ();
3230 xsnprintf (str
, CELLSIZE
, "0x%s", phex_nz ((uintptr_t) addr
, sizeof (addr
)));
3235 gdb_realpath (const char *filename
)
3237 /* Method 1: The system has a compile time upper bound on a filename
3238 path. Use that and realpath() to canonicalize the name. This is
3239 the most common case. Note that, if there isn't a compile time
3240 upper bound, you want to avoid realpath() at all costs. */
3241 #if defined(HAVE_REALPATH)
3243 # if defined (PATH_MAX)
3245 # define USE_REALPATH
3246 # elif defined (MAXPATHLEN)
3247 char buf
[MAXPATHLEN
];
3248 # define USE_REALPATH
3250 # if defined (USE_REALPATH)
3251 const char *rp
= realpath (filename
, buf
);
3254 return xstrdup (rp
);
3257 #endif /* HAVE_REALPATH */
3259 /* Method 2: The host system (i.e., GNU) has the function
3260 canonicalize_file_name() which malloc's a chunk of memory and
3261 returns that, use that. */
3262 #if defined(HAVE_CANONICALIZE_FILE_NAME)
3264 char *rp
= canonicalize_file_name (filename
);
3266 return xstrdup (filename
);
3272 /* FIXME: cagney/2002-11-13:
3274 Method 2a: Use realpath() with a NULL buffer. Some systems, due
3275 to the problems described in in method 3, have modified their
3276 realpath() implementation so that it will allocate a buffer when
3277 NULL is passed in. Before this can be used, though, some sort of
3278 configure time test would need to be added. Otherwize the code
3279 will likely core dump. */
3281 /* Method 3: Now we're getting desperate! The system doesn't have a
3282 compile time buffer size and no alternative function. Query the
3283 OS, using pathconf(), for the buffer limit. Care is needed
3284 though, some systems do not limit PATH_MAX (return -1 for
3285 pathconf()) making it impossible to pass a correctly sized buffer
3286 to realpath() (it could always overflow). On those systems, we
3288 #if defined (HAVE_REALPATH) && defined (HAVE_UNISTD_H) && defined(HAVE_ALLOCA)
3290 /* Find out the max path size. */
3291 long path_max
= pathconf ("/", _PC_PATH_MAX
);
3294 /* PATH_MAX is bounded. */
3295 char *buf
= alloca (path_max
);
3296 char *rp
= realpath (filename
, buf
);
3297 return xstrdup (rp
? rp
: filename
);
3302 /* This system is a lost cause, just dup the buffer. */
3303 return xstrdup (filename
);
3306 /* Return a copy of FILENAME, with its directory prefix canonicalized
3310 xfullpath (const char *filename
)
3312 const char *base_name
= lbasename (filename
);
3317 /* Extract the basename of filename, and return immediately
3318 a copy of filename if it does not contain any directory prefix. */
3319 if (base_name
== filename
)
3320 return xstrdup (filename
);
3322 dir_name
= alloca ((size_t) (base_name
- filename
+ 2));
3323 /* Allocate enough space to store the dir_name + plus one extra
3324 character sometimes needed under Windows (see below), and
3325 then the closing \000 character */
3326 strncpy (dir_name
, filename
, base_name
- filename
);
3327 dir_name
[base_name
- filename
] = '\000';
3329 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
3330 /* We need to be careful when filename is of the form 'd:foo', which
3331 is equivalent of d:./foo, which is totally different from d:/foo. */
3332 if (strlen (dir_name
) == 2 && isalpha (dir_name
[0]) && dir_name
[1] == ':')
3335 dir_name
[3] = '\000';
3339 /* Canonicalize the directory prefix, and build the resulting
3340 filename. If the dirname realpath already contains an ending
3341 directory separator, avoid doubling it. */
3342 real_path
= gdb_realpath (dir_name
);
3343 if (IS_DIR_SEPARATOR (real_path
[strlen (real_path
) - 1]))
3344 result
= concat (real_path
, base_name
, (char *)NULL
);
3346 result
= concat (real_path
, SLASH_STRING
, base_name
, (char *)NULL
);
3353 /* This is the 32-bit CRC function used by the GNU separate debug
3354 facility. An executable may contain a section named
3355 .gnu_debuglink, which holds the name of a separate executable file
3356 containing its debug info, and a checksum of that file's contents,
3357 computed using this function. */
3359 gnu_debuglink_crc32 (unsigned long crc
, unsigned char *buf
, size_t len
)
3361 static const unsigned int crc32_table
[256] = {
3362 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419,
3363 0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4,
3364 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07,
3365 0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,
3366 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856,
3367 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
3368 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4,
3369 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
3370 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3,
3371 0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a,
3372 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599,
3373 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
3374 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190,
3375 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f,
3376 0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e,
3377 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
3378 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed,
3379 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
3380 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3,
3381 0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2,
3382 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a,
3383 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5,
3384 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010,
3385 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
3386 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17,
3387 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6,
3388 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615,
3389 0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,
3390 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344,
3391 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
3392 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a,
3393 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
3394 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1,
3395 0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c,
3396 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef,
3397 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
3398 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe,
3399 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31,
3400 0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c,
3401 0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
3402 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b,
3403 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
3404 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1,
3405 0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,
3406 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278,
3407 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7,
3408 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66,
3409 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
3410 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605,
3411 0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8,
3412 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b,
3417 crc
= ~crc
& 0xffffffff;
3418 for (end
= buf
+ len
; buf
< end
; ++buf
)
3419 crc
= crc32_table
[(crc
^ *buf
) & 0xff] ^ (crc
>> 8);
3420 return ~crc
& 0xffffffff;;
3424 align_up (ULONGEST v
, int n
)
3426 /* Check that N is really a power of two. */
3427 gdb_assert (n
&& (n
& (n
-1)) == 0);
3428 return (v
+ n
- 1) & -n
;
3432 align_down (ULONGEST v
, int n
)
3434 /* Check that N is really a power of two. */
3435 gdb_assert (n
&& (n
& (n
-1)) == 0);
3439 /* Allocation function for the libiberty hash table which uses an
3440 obstack. The obstack is passed as DATA. */
3443 hashtab_obstack_allocate (void *data
, size_t size
, size_t count
)
3445 unsigned int total
= size
* count
;
3446 void *ptr
= obstack_alloc ((struct obstack
*) data
, total
);
3447 memset (ptr
, 0, total
);
3451 /* Trivial deallocation function for the libiberty splay tree and hash
3452 table - don't deallocate anything. Rely on later deletion of the
3453 obstack. DATA will be the obstack, although it is not needed
3457 dummy_obstack_deallocate (void *object
, void *data
)
3462 /* The bit offset of the highest byte in a ULONGEST, for overflow
3465 #define HIGH_BYTE_POSN ((sizeof (ULONGEST) - 1) * HOST_CHAR_BIT)
3467 /* True (non-zero) iff DIGIT is a valid digit in radix BASE,
3468 where 2 <= BASE <= 36. */
3471 is_digit_in_base (unsigned char digit
, int base
)
3473 if (!isalnum (digit
))
3476 return (isdigit (digit
) && digit
< base
+ '0');
3478 return (isdigit (digit
) || tolower (digit
) < base
- 10 + 'a');
3482 digit_to_int (unsigned char c
)
3487 return tolower (c
) - 'a' + 10;
3490 /* As for strtoul, but for ULONGEST results. */
3493 strtoulst (const char *num
, const char **trailer
, int base
)
3495 unsigned int high_part
;
3500 /* Skip leading whitespace. */
3501 while (isspace (num
[i
]))
3504 /* Handle prefixes. */
3507 else if (num
[i
] == '-')
3513 if (base
== 0 || base
== 16)
3515 if (num
[i
] == '0' && (num
[i
+ 1] == 'x' || num
[i
+ 1] == 'X'))
3523 if (base
== 0 && num
[i
] == '0')
3529 if (base
< 2 || base
> 36)
3535 result
= high_part
= 0;
3536 for (; is_digit_in_base (num
[i
], base
); i
+= 1)
3538 result
= result
* base
+ digit_to_int (num
[i
]);
3539 high_part
= high_part
* base
+ (unsigned int) (result
>> HIGH_BYTE_POSN
);
3540 result
&= ((ULONGEST
) 1 << HIGH_BYTE_POSN
) - 1;
3541 if (high_part
> 0xff)
3544 result
= ~ (ULONGEST
) 0;
3551 if (trailer
!= NULL
)
3554 result
= result
+ ((ULONGEST
) high_part
<< HIGH_BYTE_POSN
);
3561 /* Simple, portable version of dirname that does not modify its
3565 ldirname (const char *filename
)
3567 const char *base
= lbasename (filename
);
3570 while (base
> filename
&& IS_DIR_SEPARATOR (base
[-1]))
3573 if (base
== filename
)
3576 dirname
= xmalloc (base
- filename
+ 2);
3577 memcpy (dirname
, filename
, base
- filename
);
3579 /* On DOS based file systems, convert "d:foo" to "d:.", so that we
3580 create "d:./bar" later instead of the (different) "d:/bar". */
3581 if (base
- filename
== 2 && IS_ABSOLUTE_PATH (base
)
3582 && !IS_DIR_SEPARATOR (filename
[0]))
3583 dirname
[base
++ - filename
] = '.';
3585 dirname
[base
- filename
] = '\0';
3589 /* Call libiberty's buildargv, and return the result.
3590 If buildargv fails due to out-of-memory, call nomem.
3591 Therefore, the returned value is guaranteed to be non-NULL,
3592 unless the parameter itself is NULL. */
3595 gdb_buildargv (const char *s
)
3597 char **argv
= buildargv (s
);
3598 if (s
!= NULL
&& argv
== NULL
)
3604 compare_positive_ints (const void *ap
, const void *bp
)
3606 /* Because we know we're comparing two ints which are positive,
3607 there's no danger of overflow here. */
3608 return * (int *) ap
- * (int *) bp
;
3611 /* Provide a prototype to silence -Wmissing-prototypes. */
3612 extern initialize_file_ftype _initialize_utils
;
3615 _initialize_utils (void)
3617 add_internal_problem_command (&internal_error_problem
);
3618 add_internal_problem_command (&internal_warning_problem
);