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"
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"
78 extern PTR
malloc (); /* ARI: PTR */
80 #if !HAVE_DECL_REALLOC
81 extern PTR
realloc (); /* ARI: PTR */
87 /* readline defines this. */
90 void (*deprecated_error_begin_hook
) (void);
92 /* Prototypes for local functions */
94 static void vfprintf_maybe_filtered (struct ui_file
*, const char *,
95 va_list, int) ATTR_FORMAT (printf
, 2, 0);
97 static void fputs_maybe_filtered (const char *, struct ui_file
*, int);
99 static void do_my_cleanups (struct cleanup
**, struct cleanup
*);
101 static void prompt_for_continue (void);
103 static void set_screen_size (void);
104 static void set_width (void);
106 /* A flag indicating whether to timestamp debugging messages. */
108 static int debug_timestamp
= 0;
110 /* Chain of cleanup actions established with make_cleanup,
111 to be executed if an error happens. */
113 static struct cleanup
*cleanup_chain
; /* cleaned up after a failed command */
114 static struct cleanup
*final_cleanup_chain
; /* cleaned up when gdb exits */
116 /* Nonzero if we have job control. */
120 /* Nonzero means a quit has been requested. */
124 /* Nonzero means quit immediately if Control-C is typed now, rather
125 than waiting until QUIT is executed. Be careful in setting this;
126 code which executes with immediate_quit set has to be very careful
127 about being able to deal with being interrupted at any time. It is
128 almost always better to use QUIT; the only exception I can think of
129 is being able to quit out of a system call (using EINTR loses if
130 the SIGINT happens between the previous QUIT and the system call).
131 To immediately quit in the case in which a SIGINT happens between
132 the previous QUIT and setting immediate_quit (desirable anytime we
133 expect to block), call QUIT after setting immediate_quit. */
137 /* Nonzero means that encoded C++/ObjC names should be printed out in their
138 C++/ObjC form rather than raw. */
142 show_demangle (struct ui_file
*file
, int from_tty
,
143 struct cmd_list_element
*c
, const char *value
)
145 fprintf_filtered (file
, _("\
146 Demangling of encoded C++/ObjC names when displaying symbols is %s.\n"),
150 /* Nonzero means that encoded C++/ObjC names should be printed out in their
151 C++/ObjC form even in assembler language displays. If this is set, but
152 DEMANGLE is zero, names are printed raw, i.e. DEMANGLE controls. */
154 int asm_demangle
= 0;
156 show_asm_demangle (struct ui_file
*file
, int from_tty
,
157 struct cmd_list_element
*c
, const char *value
)
159 fprintf_filtered (file
, _("\
160 Demangling of C++/ObjC names in disassembly listings is %s.\n"),
164 /* Nonzero means that strings with character values >0x7F should be printed
165 as octal escapes. Zero means just print the value (e.g. it's an
166 international character, and the terminal or window can cope.) */
168 int sevenbit_strings
= 0;
170 show_sevenbit_strings (struct ui_file
*file
, int from_tty
,
171 struct cmd_list_element
*c
, const char *value
)
173 fprintf_filtered (file
, _("\
174 Printing of 8-bit characters in strings as \\nnn is %s.\n"),
178 /* String to be printed before error messages, if any. */
180 char *error_pre_print
;
182 /* String to be printed before quit messages, if any. */
184 char *quit_pre_print
;
186 /* String to be printed before warning messages, if any. */
188 char *warning_pre_print
= "\nwarning: ";
190 int pagination_enabled
= 1;
192 show_pagination_enabled (struct ui_file
*file
, int from_tty
,
193 struct cmd_list_element
*c
, const char *value
)
195 fprintf_filtered (file
, _("State of pagination is %s.\n"), value
);
200 /* Add a new cleanup to the cleanup_chain,
201 and return the previous chain pointer
202 to be passed later to do_cleanups or discard_cleanups.
203 Args are FUNCTION to clean up with, and ARG to pass to it. */
206 make_cleanup (make_cleanup_ftype
*function
, void *arg
)
208 return make_my_cleanup (&cleanup_chain
, function
, arg
);
212 make_cleanup_dtor (make_cleanup_ftype
*function
, void *arg
,
213 void (*dtor
) (void *))
215 return make_my_cleanup2 (&cleanup_chain
,
216 function
, arg
, dtor
);
220 make_final_cleanup (make_cleanup_ftype
*function
, void *arg
)
222 return make_my_cleanup (&final_cleanup_chain
, function
, arg
);
226 do_freeargv (void *arg
)
228 freeargv ((char **) arg
);
232 make_cleanup_freeargv (char **arg
)
234 return make_my_cleanup (&cleanup_chain
, do_freeargv
, arg
);
238 do_bfd_close_cleanup (void *arg
)
244 make_cleanup_bfd_close (bfd
*abfd
)
246 return make_cleanup (do_bfd_close_cleanup
, abfd
);
250 do_close_cleanup (void *arg
)
257 make_cleanup_close (int fd
)
259 int *saved_fd
= xmalloc (sizeof (fd
));
261 return make_cleanup_dtor (do_close_cleanup
, saved_fd
, xfree
);
264 /* Helper function which does the work for make_cleanup_fclose. */
267 do_fclose_cleanup (void *arg
)
273 /* Return a new cleanup that closes FILE. */
276 make_cleanup_fclose (FILE *file
)
278 return make_cleanup (do_fclose_cleanup
, file
);
281 /* Helper function which does the work for make_cleanup_obstack_free. */
284 do_obstack_free (void *arg
)
286 struct obstack
*ob
= arg
;
287 obstack_free (ob
, NULL
);
290 /* Return a new cleanup that frees OBSTACK. */
293 make_cleanup_obstack_free (struct obstack
*obstack
)
295 return make_cleanup (do_obstack_free
, obstack
);
299 do_ui_file_delete (void *arg
)
301 ui_file_delete (arg
);
305 make_cleanup_ui_file_delete (struct ui_file
*arg
)
307 return make_my_cleanup (&cleanup_chain
, do_ui_file_delete
, arg
);
311 do_free_section_addr_info (void *arg
)
313 free_section_addr_info (arg
);
317 make_cleanup_free_section_addr_info (struct section_addr_info
*addrs
)
319 return make_my_cleanup (&cleanup_chain
, do_free_section_addr_info
, addrs
);
322 struct restore_integer_closure
329 restore_integer (void *p
)
331 struct restore_integer_closure
*closure
= p
;
332 *(closure
->variable
) = closure
->value
;
335 /* Remember the current value of *VARIABLE and make it restored when the cleanup
338 make_cleanup_restore_integer (int *variable
)
340 struct restore_integer_closure
*c
=
341 xmalloc (sizeof (struct restore_integer_closure
));
342 c
->variable
= variable
;
343 c
->value
= *variable
;
345 return make_my_cleanup2 (&cleanup_chain
, restore_integer
, (void *)c
,
350 make_my_cleanup2 (struct cleanup
**pmy_chain
, make_cleanup_ftype
*function
,
351 void *arg
, void (*free_arg
) (void *))
354 = (struct cleanup
*) xmalloc (sizeof (struct cleanup
));
355 struct cleanup
*old_chain
= *pmy_chain
;
357 new->next
= *pmy_chain
;
358 new->function
= function
;
359 new->free_arg
= free_arg
;
367 make_my_cleanup (struct cleanup
**pmy_chain
, make_cleanup_ftype
*function
,
370 return make_my_cleanup2 (pmy_chain
, function
, arg
, NULL
);
373 /* Discard cleanups and do the actions they describe
374 until we get back to the point OLD_CHAIN in the cleanup_chain. */
377 do_cleanups (struct cleanup
*old_chain
)
379 do_my_cleanups (&cleanup_chain
, old_chain
);
383 do_final_cleanups (struct cleanup
*old_chain
)
385 do_my_cleanups (&final_cleanup_chain
, old_chain
);
389 do_my_cleanups (struct cleanup
**pmy_chain
,
390 struct cleanup
*old_chain
)
393 while ((ptr
= *pmy_chain
) != old_chain
)
395 *pmy_chain
= ptr
->next
; /* Do this first incase recursion */
396 (*ptr
->function
) (ptr
->arg
);
398 (*ptr
->free_arg
) (ptr
->arg
);
403 /* Discard cleanups, not doing the actions they describe,
404 until we get back to the point OLD_CHAIN in the cleanup_chain. */
407 discard_cleanups (struct cleanup
*old_chain
)
409 discard_my_cleanups (&cleanup_chain
, old_chain
);
413 discard_final_cleanups (struct cleanup
*old_chain
)
415 discard_my_cleanups (&final_cleanup_chain
, old_chain
);
419 discard_my_cleanups (struct cleanup
**pmy_chain
,
420 struct cleanup
*old_chain
)
423 while ((ptr
= *pmy_chain
) != old_chain
)
425 *pmy_chain
= ptr
->next
;
427 (*ptr
->free_arg
) (ptr
->arg
);
432 /* Set the cleanup_chain to 0, and return the old cleanup chain. */
436 return save_my_cleanups (&cleanup_chain
);
440 save_final_cleanups (void)
442 return save_my_cleanups (&final_cleanup_chain
);
446 save_my_cleanups (struct cleanup
**pmy_chain
)
448 struct cleanup
*old_chain
= *pmy_chain
;
454 /* Restore the cleanup chain from a previously saved chain. */
456 restore_cleanups (struct cleanup
*chain
)
458 restore_my_cleanups (&cleanup_chain
, chain
);
462 restore_final_cleanups (struct cleanup
*chain
)
464 restore_my_cleanups (&final_cleanup_chain
, chain
);
468 restore_my_cleanups (struct cleanup
**pmy_chain
, struct cleanup
*chain
)
473 /* This function is useful for cleanups.
477 old_chain = make_cleanup (free_current_contents, &foo);
479 to arrange to free the object thus allocated. */
482 free_current_contents (void *ptr
)
484 void **location
= ptr
;
485 if (location
== NULL
)
486 internal_error (__FILE__
, __LINE__
,
487 _("free_current_contents: NULL pointer"));
488 if (*location
!= NULL
)
495 /* Provide a known function that does nothing, to use as a base for
496 for a possibly long chain of cleanups. This is useful where we
497 use the cleanup chain for handling normal cleanups as well as dealing
498 with cleanups that need to be done as a result of a call to error().
499 In such cases, we may not be certain where the first cleanup is, unless
500 we have a do-nothing one to always use as the base. */
503 null_cleanup (void *arg
)
507 /* Continuations are implemented as cleanups internally. Inherit from
514 /* Add a continuation to the continuation list of THREAD. The new
515 continuation will be added at the front. */
517 add_continuation (struct thread_info
*thread
,
518 void (*continuation_hook
) (void *), void *args
,
519 void (*continuation_free_args
) (void *))
521 struct cleanup
*as_cleanup
= &thread
->continuations
->base
;
522 make_cleanup_ftype
*continuation_hook_fn
= continuation_hook
;
524 make_my_cleanup2 (&as_cleanup
,
525 continuation_hook_fn
,
527 continuation_free_args
);
529 thread
->continuations
= (struct continuation
*) as_cleanup
;
532 /* Add a continuation to the continuation list of INFERIOR. The new
533 continuation will be added at the front. */
536 add_inferior_continuation (void (*continuation_hook
) (void *), void *args
,
537 void (*continuation_free_args
) (void *))
539 struct inferior
*inf
= current_inferior ();
540 struct cleanup
*as_cleanup
= &inf
->continuations
->base
;
541 make_cleanup_ftype
*continuation_hook_fn
= continuation_hook
;
543 make_my_cleanup2 (&as_cleanup
,
544 continuation_hook_fn
,
546 continuation_free_args
);
548 inf
->continuations
= (struct continuation
*) as_cleanup
;
551 /* Do all continuations of the current inferior. */
554 do_all_inferior_continuations (void)
556 struct cleanup
*old_chain
;
557 struct cleanup
*as_cleanup
;
558 struct inferior
*inf
= current_inferior ();
560 if (inf
->continuations
== NULL
)
563 /* Copy the list header into another pointer, and set the global
564 list header to null, so that the global list can change as a side
565 effect of invoking the continuations and the processing of the
566 preexisting continuations will not be affected. */
568 as_cleanup
= &inf
->continuations
->base
;
569 inf
->continuations
= NULL
;
571 /* Work now on the list we have set aside. */
572 do_my_cleanups (&as_cleanup
, NULL
);
575 /* Get rid of all the inferior-wide continuations of INF. */
578 discard_all_inferior_continuations (struct inferior
*inf
)
580 struct cleanup
*continuation_ptr
= &inf
->continuations
->base
;
581 discard_my_cleanups (&continuation_ptr
, NULL
);
582 inf
->continuations
= NULL
;
586 restore_thread_cleanup (void *arg
)
588 ptid_t
*ptid_p
= arg
;
589 switch_to_thread (*ptid_p
);
592 /* Walk down the continuation list of PTID, and execute all the
593 continuations. There is a problem though. In some cases new
594 continuations may be added while we are in the middle of this loop.
595 If this happens they will be added in the front, and done before we
596 have a chance of exhausting those that were already there. We need
597 to then save the beginning of the list in a pointer and do the
598 continuations from there on, instead of using the global beginning
599 of list as our iteration pointer. */
601 do_all_continuations_ptid (ptid_t ptid
,
602 struct continuation
**continuations_p
)
604 struct cleanup
*old_chain
;
605 ptid_t current_thread
;
606 struct cleanup
*as_cleanup
;
608 if (*continuations_p
== NULL
)
611 current_thread
= inferior_ptid
;
613 /* Restore selected thread on exit. Don't try to restore the frame
616 - When running continuations, the selected frame is always #0.
618 - The continuations may trigger symbol file loads, which may
619 change the frame layout (frame ids change), which would trigger
620 a warning if we used make_cleanup_restore_current_thread. */
622 old_chain
= make_cleanup (restore_thread_cleanup
, ¤t_thread
);
624 /* Let the continuation see this thread as selected. */
625 switch_to_thread (ptid
);
627 /* Copy the list header into another pointer, and set the global
628 list header to null, so that the global list can change as a side
629 effect of invoking the continuations and the processing of the
630 preexisting continuations will not be affected. */
632 as_cleanup
= &(*continuations_p
)->base
;
633 *continuations_p
= NULL
;
635 /* Work now on the list we have set aside. */
636 do_my_cleanups (&as_cleanup
, NULL
);
638 do_cleanups (old_chain
);
641 /* Callback for iterate over threads. */
643 do_all_continuations_thread_callback (struct thread_info
*thread
, void *data
)
645 do_all_continuations_ptid (thread
->ptid
, &thread
->continuations
);
649 /* Do all continuations of thread THREAD. */
651 do_all_continuations_thread (struct thread_info
*thread
)
653 do_all_continuations_thread_callback (thread
, NULL
);
656 /* Do all continuations of all threads. */
658 do_all_continuations (void)
660 iterate_over_threads (do_all_continuations_thread_callback
, NULL
);
663 /* Callback for iterate over threads. */
665 discard_all_continuations_thread_callback (struct thread_info
*thread
,
668 struct cleanup
*continuation_ptr
= &thread
->continuations
->base
;
669 discard_my_cleanups (&continuation_ptr
, NULL
);
670 thread
->continuations
= NULL
;
674 /* Get rid of all the continuations of THREAD. */
676 discard_all_continuations_thread (struct thread_info
*thread
)
678 discard_all_continuations_thread_callback (thread
, NULL
);
681 /* Get rid of all the continuations of all threads. */
683 discard_all_continuations (void)
685 iterate_over_threads (discard_all_continuations_thread_callback
, NULL
);
689 /* Add a continuation to the intermediate continuation list of THREAD.
690 The new continuation will be added at the front. */
692 add_intermediate_continuation (struct thread_info
*thread
,
693 void (*continuation_hook
)
694 (void *), void *args
,
695 void (*continuation_free_args
) (void *))
697 struct cleanup
*as_cleanup
= &thread
->intermediate_continuations
->base
;
698 make_cleanup_ftype
*continuation_hook_fn
= continuation_hook
;
700 make_my_cleanup2 (&as_cleanup
,
701 continuation_hook_fn
,
703 continuation_free_args
);
705 thread
->intermediate_continuations
= (struct continuation
*) as_cleanup
;
708 /* Walk down the cmd_continuation list, and execute all the
709 continuations. There is a problem though. In some cases new
710 continuations may be added while we are in the middle of this
711 loop. If this happens they will be added in the front, and done
712 before we have a chance of exhausting those that were already
713 there. We need to then save the beginning of the list in a pointer
714 and do the continuations from there on, instead of using the
715 global beginning of list as our iteration pointer.*/
717 do_all_intermediate_continuations_thread_callback (struct thread_info
*thread
,
720 do_all_continuations_ptid (thread
->ptid
,
721 &thread
->intermediate_continuations
);
725 /* Do all intermediate continuations of thread THREAD. */
727 do_all_intermediate_continuations_thread (struct thread_info
*thread
)
729 do_all_intermediate_continuations_thread_callback (thread
, NULL
);
732 /* Do all intermediate continuations of all threads. */
734 do_all_intermediate_continuations (void)
736 iterate_over_threads (do_all_intermediate_continuations_thread_callback
, NULL
);
739 /* Callback for iterate over threads. */
741 discard_all_intermediate_continuations_thread_callback (struct thread_info
*thread
,
744 struct cleanup
*continuation_ptr
= &thread
->intermediate_continuations
->base
;
745 discard_my_cleanups (&continuation_ptr
, NULL
);
746 thread
->intermediate_continuations
= NULL
;
750 /* Get rid of all the intermediate continuations of THREAD. */
752 discard_all_intermediate_continuations_thread (struct thread_info
*thread
)
754 discard_all_intermediate_continuations_thread_callback (thread
, NULL
);
757 /* Get rid of all the intermediate continuations of all threads. */
759 discard_all_intermediate_continuations (void)
761 iterate_over_threads (discard_all_intermediate_continuations_thread_callback
, NULL
);
766 /* Print a warning message. The first argument STRING is the warning
767 message, used as an fprintf format string, the second is the
768 va_list of arguments for that string. A warning is unfiltered (not
769 paginated) so that the user does not need to page through each
770 screen full of warnings when there are lots of them. */
773 vwarning (const char *string
, va_list args
)
775 if (deprecated_warning_hook
)
776 (*deprecated_warning_hook
) (string
, args
);
779 target_terminal_ours ();
780 wrap_here (""); /* Force out any buffered output */
781 gdb_flush (gdb_stdout
);
782 if (warning_pre_print
)
783 fputs_unfiltered (warning_pre_print
, gdb_stderr
);
784 vfprintf_unfiltered (gdb_stderr
, string
, args
);
785 fprintf_unfiltered (gdb_stderr
, "\n");
790 /* Print a warning message.
791 The first argument STRING is the warning message, used as a fprintf string,
792 and the remaining args are passed as arguments to it.
793 The primary difference between warnings and errors is that a warning
794 does not force the return to command level. */
797 warning (const char *string
, ...)
800 va_start (args
, string
);
801 vwarning (string
, args
);
805 /* Print an error message and return to command level.
806 The first argument STRING is the error message, used as a fprintf string,
807 and the remaining args are passed as arguments to it. */
810 verror (const char *string
, va_list args
)
812 throw_verror (GENERIC_ERROR
, string
, args
);
816 error (const char *string
, ...)
819 va_start (args
, string
);
820 throw_verror (GENERIC_ERROR
, string
, args
);
824 /* Print an error message and quit.
825 The first argument STRING is the error message, used as a fprintf string,
826 and the remaining args are passed as arguments to it. */
829 vfatal (const char *string
, va_list args
)
831 throw_vfatal (string
, args
);
835 fatal (const char *string
, ...)
838 va_start (args
, string
);
839 throw_vfatal (string
, args
);
844 error_stream (struct ui_file
*stream
)
846 char *message
= ui_file_xstrdup (stream
, NULL
);
847 make_cleanup (xfree
, message
);
848 error (("%s"), message
);
851 /* Dump core trying to increase the core soft limit to hard limit first. */
856 #ifdef HAVE_SETRLIMIT
857 struct rlimit rlim
= { RLIM_INFINITY
, RLIM_INFINITY
};
859 setrlimit (RLIMIT_CORE
, &rlim
);
860 #endif /* HAVE_SETRLIMIT */
862 abort (); /* NOTE: GDB has only three calls to abort(). */
865 /* Check whether GDB will be able to dump core using the dump_core function. */
868 can_dump_core (const char *reason
)
870 #ifdef HAVE_GETRLIMIT
873 /* Be quiet and assume we can dump if an error is returned. */
874 if (getrlimit (RLIMIT_CORE
, &rlim
) != 0)
877 if (rlim
.rlim_max
== 0)
879 fprintf_unfiltered (gdb_stderr
,
880 _("%s\nUnable to dump core, use `ulimit -c unlimited'"
881 " before executing GDB next time.\n"), reason
);
884 #endif /* HAVE_GETRLIMIT */
889 /* Allow the user to configure the debugger behavior with respect to
890 what to do when an internal problem is detected. */
892 const char internal_problem_ask
[] = "ask";
893 const char internal_problem_yes
[] = "yes";
894 const char internal_problem_no
[] = "no";
895 static const char *internal_problem_modes
[] =
897 internal_problem_ask
,
898 internal_problem_yes
,
902 static const char *internal_problem_mode
= internal_problem_ask
;
904 /* Print a message reporting an internal error/warning. Ask the user
905 if they want to continue, dump core, or just exit. Return
906 something to indicate a quit. */
908 struct internal_problem
911 const char *should_quit
;
912 const char *should_dump_core
;
915 /* Report a problem, internal to GDB, to the user. Once the problem
916 has been reported, and assuming GDB didn't quit, the caller can
917 either allow execution to resume or throw an error. */
919 static void ATTR_FORMAT (printf
, 4, 0)
920 internal_vproblem (struct internal_problem
*problem
,
921 const char *file
, int line
, const char *fmt
, va_list ap
)
928 /* Don't allow infinite error/warning recursion. */
930 static char msg
[] = "Recursive internal problem.\n";
938 fputs_unfiltered (msg
, gdb_stderr
);
939 abort (); /* NOTE: GDB has only three calls to abort(). */
942 /* Newer GLIBC versions put the warn_unused_result attribute
943 on write, but this is one of those rare cases where
944 ignoring the return value is correct. Casting to (void)
945 does not fix this problem. This is the solution suggested
946 at http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25509. */
947 if (write (STDERR_FILENO
, msg
, sizeof (msg
)) != sizeof (msg
))
948 abort (); /* NOTE: GDB has only three calls to abort(). */
953 /* Try to get the message out and at the start of a new line. */
954 target_terminal_ours ();
957 /* Create a string containing the full error/warning message. Need
958 to call query with this full string, as otherwize the reason
959 (error/warning) and question become separated. Format using a
960 style similar to a compiler error message. Include extra detail
961 so that the user knows that they are living on the edge. */
964 msg
= xstrvprintf (fmt
, ap
);
965 reason
= xstrprintf ("\
967 A problem internal to GDB has been detected,\n\
968 further debugging may prove unreliable.", file
, line
, problem
->name
, msg
);
970 make_cleanup (xfree
, reason
);
973 if (problem
->should_quit
== internal_problem_ask
)
975 /* Default (yes/batch case) is to quit GDB. When in batch mode
976 this lessens the likelihood of GDB going into an infinite
980 /* Emit the message and quit. */
981 fputs_unfiltered (reason
, gdb_stderr
);
982 fputs_unfiltered ("\n", gdb_stderr
);
986 quit_p
= query (_("%s\nQuit this debugging session? "), reason
);
988 else if (problem
->should_quit
== internal_problem_yes
)
990 else if (problem
->should_quit
== internal_problem_no
)
993 internal_error (__FILE__
, __LINE__
, _("bad switch"));
995 if (problem
->should_dump_core
== internal_problem_ask
)
997 if (!can_dump_core (reason
))
1001 /* Default (yes/batch case) is to dump core. This leaves a GDB
1002 `dropping' so that it is easier to see that something went
1004 dump_core_p
= query (_("%s\nCreate a core file of GDB? "), reason
);
1007 else if (problem
->should_dump_core
== internal_problem_yes
)
1008 dump_core_p
= can_dump_core (reason
);
1009 else if (problem
->should_dump_core
== internal_problem_no
)
1012 internal_error (__FILE__
, __LINE__
, _("bad switch"));
1025 #ifdef HAVE_WORKING_FORK
1035 static struct internal_problem internal_error_problem
= {
1036 "internal-error", internal_problem_ask
, internal_problem_ask
1040 internal_verror (const char *file
, int line
, const char *fmt
, va_list ap
)
1042 internal_vproblem (&internal_error_problem
, file
, line
, fmt
, ap
);
1043 deprecated_throw_reason (RETURN_ERROR
);
1047 internal_error (const char *file
, int line
, const char *string
, ...)
1050 va_start (ap
, string
);
1051 internal_verror (file
, line
, string
, ap
);
1055 static struct internal_problem internal_warning_problem
= {
1056 "internal-warning", internal_problem_ask
, internal_problem_ask
1060 internal_vwarning (const char *file
, int line
, const char *fmt
, va_list ap
)
1062 internal_vproblem (&internal_warning_problem
, file
, line
, fmt
, ap
);
1066 internal_warning (const char *file
, int line
, const char *string
, ...)
1069 va_start (ap
, string
);
1070 internal_vwarning (file
, line
, string
, ap
);
1074 /* Dummy functions to keep add_prefix_cmd happy. */
1077 set_internal_problem_cmd (char *args
, int from_tty
)
1082 show_internal_problem_cmd (char *args
, int from_tty
)
1086 /* When GDB reports an internal problem (error or warning) it gives
1087 the user the opportunity to quit GDB and/or create a core file of
1088 the current debug session. This function registers a few commands
1089 that make it possible to specify that GDB should always or never
1090 quit or create a core file, without asking. The commands look
1093 maint set PROBLEM-NAME quit ask|yes|no
1094 maint show PROBLEM-NAME quit
1095 maint set PROBLEM-NAME corefile ask|yes|no
1096 maint show PROBLEM-NAME corefile
1098 Where PROBLEM-NAME is currently "internal-error" or
1099 "internal-warning". */
1102 add_internal_problem_command (struct internal_problem
*problem
)
1104 struct cmd_list_element
**set_cmd_list
;
1105 struct cmd_list_element
**show_cmd_list
;
1109 set_cmd_list
= xmalloc (sizeof (*set_cmd_list
));
1110 show_cmd_list
= xmalloc (sizeof (*set_cmd_list
));
1111 *set_cmd_list
= NULL
;
1112 *show_cmd_list
= NULL
;
1114 set_doc
= xstrprintf (_("Configure what GDB does when %s is detected."),
1117 show_doc
= xstrprintf (_("Show what GDB does when %s is detected."),
1120 add_prefix_cmd ((char*) problem
->name
,
1121 class_maintenance
, set_internal_problem_cmd
, set_doc
,
1123 concat ("maintenance set ", problem
->name
, " ", NULL
),
1124 0/*allow-unknown*/, &maintenance_set_cmdlist
);
1126 add_prefix_cmd ((char*) problem
->name
,
1127 class_maintenance
, show_internal_problem_cmd
, show_doc
,
1129 concat ("maintenance show ", problem
->name
, " ", NULL
),
1130 0/*allow-unknown*/, &maintenance_show_cmdlist
);
1132 set_doc
= xstrprintf (_("\
1133 Set whether GDB should quit when an %s is detected"),
1135 show_doc
= xstrprintf (_("\
1136 Show whether GDB will quit when an %s is detected"),
1138 add_setshow_enum_cmd ("quit", class_maintenance
,
1139 internal_problem_modes
,
1140 &problem
->should_quit
,
1143 NULL
, /* help_doc */
1145 NULL
, /* showfunc */
1152 set_doc
= xstrprintf (_("\
1153 Set whether GDB should create a core file of GDB when %s is detected"),
1155 show_doc
= xstrprintf (_("\
1156 Show whether GDB will create a core file of GDB when %s is detected"),
1158 add_setshow_enum_cmd ("corefile", class_maintenance
,
1159 internal_problem_modes
,
1160 &problem
->should_dump_core
,
1163 NULL
, /* help_doc */
1165 NULL
, /* showfunc */
1173 /* Print the system error message for errno, and also mention STRING
1174 as the file name for which the error was encountered.
1175 Then return to command level. */
1178 perror_with_name (const char *string
)
1183 err
= safe_strerror (errno
);
1184 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
1185 strcpy (combined
, string
);
1186 strcat (combined
, ": ");
1187 strcat (combined
, err
);
1189 /* I understand setting these is a matter of taste. Still, some people
1190 may clear errno but not know about bfd_error. Doing this here is not
1192 bfd_set_error (bfd_error_no_error
);
1195 error (_("%s."), combined
);
1198 /* Print the system error message for ERRCODE, and also mention STRING
1199 as the file name for which the error was encountered. */
1202 print_sys_errmsg (const char *string
, int errcode
)
1207 err
= safe_strerror (errcode
);
1208 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
1209 strcpy (combined
, string
);
1210 strcat (combined
, ": ");
1211 strcat (combined
, err
);
1213 /* We want anything which was printed on stdout to come out first, before
1215 gdb_flush (gdb_stdout
);
1216 fprintf_unfiltered (gdb_stderr
, "%s.\n", combined
);
1219 /* Control C eventually causes this to be called, at a convenient time. */
1225 /* No steenking SIGINT will ever be coming our way when the
1226 program is resumed. Don't lie. */
1230 /* If there is no terminal switching for this target, then we can't
1231 possibly get screwed by the lack of job control. */
1232 || current_target
.to_terminal_ours
== NULL
)
1235 fatal ("Quit (expect signal SIGINT when the program is resumed)");
1240 /* Called when a memory allocation fails, with the number of bytes of
1241 memory requested in SIZE. */
1248 internal_error (__FILE__
, __LINE__
,
1249 _("virtual memory exhausted: can't allocate %ld bytes."),
1254 internal_error (__FILE__
, __LINE__
, _("virtual memory exhausted."));
1258 /* The xmalloc() (libiberty.h) family of memory management routines.
1260 These are like the ISO-C malloc() family except that they implement
1261 consistent semantics and guard against typical memory management
1264 /* NOTE: These are declared using PTR to ensure consistency with
1265 "libiberty.h". xfree() is GDB local. */
1268 xmalloc (size_t size
)
1272 /* See libiberty/xmalloc.c. This function need's to match that's
1273 semantics. It never returns NULL. */
1277 val
= malloc (size
); /* ARI: malloc */
1285 xzalloc (size_t size
)
1287 return xcalloc (1, size
);
1291 xrealloc (PTR ptr
, size_t size
) /* ARI: PTR */
1295 /* See libiberty/xmalloc.c. This function need's to match that's
1296 semantics. It never returns NULL. */
1301 val
= realloc (ptr
, size
); /* ARI: realloc */
1303 val
= malloc (size
); /* ARI: malloc */
1311 xcalloc (size_t number
, size_t size
)
1315 /* See libiberty/xmalloc.c. This function need's to match that's
1316 semantics. It never returns NULL. */
1317 if (number
== 0 || size
== 0)
1323 mem
= calloc (number
, size
); /* ARI: xcalloc */
1325 nomem (number
* size
);
1334 free (ptr
); /* ARI: free */
1338 /* Like asprintf/vasprintf but get an internal_error if the call
1342 xstrprintf (const char *format
, ...)
1346 va_start (args
, format
);
1347 ret
= xstrvprintf (format
, args
);
1353 xasprintf (char **ret
, const char *format
, ...)
1356 va_start (args
, format
);
1357 (*ret
) = xstrvprintf (format
, args
);
1362 xvasprintf (char **ret
, const char *format
, va_list ap
)
1364 (*ret
) = xstrvprintf (format
, ap
);
1368 xstrvprintf (const char *format
, va_list ap
)
1371 int status
= vasprintf (&ret
, format
, ap
);
1372 /* NULL is returned when there was a memory allocation problem, or
1373 any other error (for instance, a bad format string). A negative
1374 status (the printed length) with a non-NULL buffer should never
1375 happen, but just to be sure. */
1376 if (ret
== NULL
|| status
< 0)
1377 internal_error (__FILE__
, __LINE__
, _("vasprintf call failed"));
1382 xsnprintf (char *str
, size_t size
, const char *format
, ...)
1387 va_start (args
, format
);
1388 ret
= vsnprintf (str
, size
, format
, args
);
1389 gdb_assert (ret
< size
);
1395 /* My replacement for the read system call.
1396 Used like `read' but keeps going if `read' returns too soon. */
1399 myread (int desc
, char *addr
, int len
)
1406 val
= read (desc
, addr
, len
);
1410 return orglen
- len
;
1417 /* Make a copy of the string at PTR with SIZE characters
1418 (and add a null character at the end in the copy).
1419 Uses malloc to get the space. Returns the address of the copy. */
1422 savestring (const char *ptr
, size_t size
)
1424 char *p
= (char *) xmalloc (size
+ 1);
1425 memcpy (p
, ptr
, size
);
1431 print_spaces (int n
, struct ui_file
*file
)
1433 fputs_unfiltered (n_spaces (n
), file
);
1436 /* Print a host address. */
1439 gdb_print_host_address (const void *addr
, struct ui_file
*stream
)
1441 fprintf_filtered (stream
, "%s", host_address_to_string (addr
));
1445 /* This function supports the query, nquery, and yquery functions.
1446 Ask user a y-or-n question and return 0 if answer is no, 1 if
1447 answer is yes, or default the answer to the specified default
1448 (for yquery or nquery). DEFCHAR may be 'y' or 'n' to provide a
1449 default answer, or '\0' for no default.
1450 CTLSTR is the control string and should end in "? ". It should
1451 not say how to answer, because we do that.
1452 ARGS are the arguments passed along with the CTLSTR argument to
1455 static int ATTR_FORMAT (printf
, 1, 0)
1456 defaulted_query (const char *ctlstr
, const char defchar
, va_list args
)
1462 char def_answer
, not_def_answer
;
1463 char *y_string
, *n_string
, *question
;
1465 /* Set up according to which answer is the default. */
1466 if (defchar
== '\0')
1470 not_def_answer
= 'N';
1474 else if (defchar
== 'y')
1478 not_def_answer
= 'N';
1486 not_def_answer
= 'Y';
1491 /* Automatically answer the default value if the user did not want
1492 prompts or the command was issued with the server prefix. */
1493 if (! caution
|| server_command
)
1496 /* If input isn't coming from the user directly, just say what
1497 question we're asking, and then answer the default automatically. This
1498 way, important error messages don't get lost when talking to GDB
1500 if (batch_flag
|| ! input_from_terminal_p ())
1503 vfprintf_filtered (gdb_stdout
, ctlstr
, args
);
1505 printf_filtered (_("(%s or %s) [answered %c; input not from terminal]\n"),
1506 y_string
, n_string
, def_answer
);
1507 gdb_flush (gdb_stdout
);
1512 if (deprecated_query_hook
)
1514 return deprecated_query_hook (ctlstr
, args
);
1517 /* Format the question outside of the loop, to avoid reusing args. */
1518 question
= xstrvprintf (ctlstr
, args
);
1522 wrap_here (""); /* Flush any buffered output */
1523 gdb_flush (gdb_stdout
);
1525 if (annotation_level
> 1)
1526 printf_filtered (("\n\032\032pre-query\n"));
1528 fputs_filtered (question
, gdb_stdout
);
1529 printf_filtered (_("(%s or %s) "), y_string
, n_string
);
1531 if (annotation_level
> 1)
1532 printf_filtered (("\n\032\032query\n"));
1535 gdb_flush (gdb_stdout
);
1537 answer
= fgetc (stdin
);
1539 /* We expect fgetc to block until a character is read. But
1540 this may not be the case if the terminal was opened with
1541 the NONBLOCK flag. In that case, if there is nothing to
1542 read on stdin, fgetc returns EOF, but also sets the error
1543 condition flag on stdin and errno to EAGAIN. With a true
1544 EOF, stdin's error condition flag is not set.
1546 A situation where this behavior was observed is a pseudo
1548 while (answer
== EOF
&& ferror (stdin
) && errno
== EAGAIN
)
1550 /* Not a real EOF. Wait a little while and try again until
1551 we read something. */
1554 answer
= fgetc (stdin
);
1557 clearerr (stdin
); /* in case of C-d */
1558 if (answer
== EOF
) /* C-d */
1560 printf_filtered ("EOF [assumed %c]\n", def_answer
);
1564 /* Eat rest of input line, to EOF or newline */
1568 ans2
= fgetc (stdin
);
1571 while (ans2
!= EOF
&& ans2
!= '\n' && ans2
!= '\r');
1575 /* Check answer. For the non-default, the user must specify
1576 the non-default explicitly. */
1577 if (answer
== not_def_answer
)
1579 retval
= !def_value
;
1582 /* Otherwise, if a default was specified, the user may either
1583 specify the required input or have it default by entering
1585 if (answer
== def_answer
1586 || (defchar
!= '\0' &&
1587 (answer
== '\n' || answer
== '\r' || answer
== EOF
)))
1592 /* Invalid entries are not defaulted and require another selection. */
1593 printf_filtered (_("Please answer %s or %s.\n"),
1594 y_string
, n_string
);
1598 if (annotation_level
> 1)
1599 printf_filtered (("\n\032\032post-query\n"));
1604 /* Ask user a y-or-n question and return 0 if answer is no, 1 if
1605 answer is yes, or 0 if answer is defaulted.
1606 Takes three args which are given to printf to print the question.
1607 The first, a control string, should end in "? ".
1608 It should not say how to answer, because we do that. */
1611 nquery (const char *ctlstr
, ...)
1615 va_start (args
, ctlstr
);
1616 return defaulted_query (ctlstr
, 'n', args
);
1620 /* Ask user a y-or-n question and return 0 if answer is no, 1 if
1621 answer is yes, or 1 if answer is defaulted.
1622 Takes three args which are given to printf to print the question.
1623 The first, a control string, should end in "? ".
1624 It should not say how to answer, because we do that. */
1627 yquery (const char *ctlstr
, ...)
1631 va_start (args
, ctlstr
);
1632 return defaulted_query (ctlstr
, 'y', args
);
1636 /* Ask user a y-or-n question and return 1 iff answer is yes.
1637 Takes three args which are given to printf to print the question.
1638 The first, a control string, should end in "? ".
1639 It should not say how to answer, because we do that. */
1642 query (const char *ctlstr
, ...)
1646 va_start (args
, ctlstr
);
1647 return defaulted_query (ctlstr
, '\0', args
);
1651 /* A helper for parse_escape that converts a host character to a
1652 target character. C is the host character. If conversion is
1653 possible, then the target character is stored in *TARGET_C and the
1654 function returns 1. Otherwise, the function returns 0. */
1657 host_char_to_target (struct gdbarch
*gdbarch
, int c
, int *target_c
)
1659 struct obstack host_data
;
1661 struct cleanup
*cleanups
;
1664 obstack_init (&host_data
);
1665 cleanups
= make_cleanup_obstack_free (&host_data
);
1667 convert_between_encodings (target_charset (gdbarch
), host_charset (),
1668 &the_char
, 1, 1, &host_data
, translit_none
);
1670 if (obstack_object_size (&host_data
) == 1)
1673 *target_c
= *(char *) obstack_base (&host_data
);
1676 do_cleanups (cleanups
);
1680 /* Parse a C escape sequence. STRING_PTR points to a variable
1681 containing a pointer to the string to parse. That pointer
1682 should point to the character after the \. That pointer
1683 is updated past the characters we use. The value of the
1684 escape sequence is returned.
1686 A negative value means the sequence \ newline was seen,
1687 which is supposed to be equivalent to nothing at all.
1689 If \ is followed by a null character, we return a negative
1690 value and leave the string pointer pointing at the null character.
1692 If \ is followed by 000, we return 0 and leave the string pointer
1693 after the zeros. A value of 0 does not mean end of string. */
1696 parse_escape (struct gdbarch
*gdbarch
, char **string_ptr
)
1698 int target_char
= -2; /* initialize to avoid GCC warnings */
1699 int c
= *(*string_ptr
)++;
1717 int i
= host_hex_value (c
);
1722 if (isdigit (c
) && c
!= '8' && c
!= '9')
1726 i
+= host_hex_value (c
);
1762 if (!host_char_to_target (gdbarch
, c
, &target_char
))
1764 ("The escape sequence `\%c' is equivalent to plain `%c', which"
1765 " has no equivalent\n" "in the `%s' character set.", c
, c
,
1766 target_charset (gdbarch
));
1770 /* Print the character C on STREAM as part of the contents of a literal
1771 string whose delimiter is QUOTER. Note that this routine should only
1772 be call for printing things which are independent of the language
1773 of the program being debugged. */
1776 printchar (int c
, void (*do_fputs
) (const char *, struct ui_file
*),
1777 void (*do_fprintf
) (struct ui_file
*, const char *, ...)
1778 ATTRIBUTE_FPTR_PRINTF_2
, struct ui_file
*stream
, int quoter
)
1781 c
&= 0xFF; /* Avoid sign bit follies */
1783 if (c
< 0x20 || /* Low control chars */
1784 (c
>= 0x7F && c
< 0xA0) || /* DEL, High controls */
1785 (sevenbit_strings
&& c
>= 0x80))
1786 { /* high order bit set */
1790 do_fputs ("\\n", stream
);
1793 do_fputs ("\\b", stream
);
1796 do_fputs ("\\t", stream
);
1799 do_fputs ("\\f", stream
);
1802 do_fputs ("\\r", stream
);
1805 do_fputs ("\\e", stream
);
1808 do_fputs ("\\a", stream
);
1811 do_fprintf (stream
, "\\%.3o", (unsigned int) c
);
1817 if (c
== '\\' || c
== quoter
)
1818 do_fputs ("\\", stream
);
1819 do_fprintf (stream
, "%c", c
);
1823 /* Print the character C on STREAM as part of the contents of a
1824 literal string whose delimiter is QUOTER. Note that these routines
1825 should only be call for printing things which are independent of
1826 the language of the program being debugged. */
1829 fputstr_filtered (const char *str
, int quoter
, struct ui_file
*stream
)
1832 printchar (*str
++, fputs_filtered
, fprintf_filtered
, stream
, quoter
);
1836 fputstr_unfiltered (const char *str
, int quoter
, struct ui_file
*stream
)
1839 printchar (*str
++, fputs_unfiltered
, fprintf_unfiltered
, stream
, quoter
);
1843 fputstrn_filtered (const char *str
, int n
, int quoter
,
1844 struct ui_file
*stream
)
1847 for (i
= 0; i
< n
; i
++)
1848 printchar (str
[i
], fputs_filtered
, fprintf_filtered
, stream
, quoter
);
1852 fputstrn_unfiltered (const char *str
, int n
, int quoter
,
1853 struct ui_file
*stream
)
1856 for (i
= 0; i
< n
; i
++)
1857 printchar (str
[i
], fputs_unfiltered
, fprintf_unfiltered
, stream
, quoter
);
1861 /* Number of lines per page or UINT_MAX if paging is disabled. */
1862 static unsigned int lines_per_page
;
1864 show_lines_per_page (struct ui_file
*file
, int from_tty
,
1865 struct cmd_list_element
*c
, const char *value
)
1867 fprintf_filtered (file
, _("\
1868 Number of lines gdb thinks are in a page is %s.\n"),
1872 /* Number of chars per line or UINT_MAX if line folding is disabled. */
1873 static unsigned int chars_per_line
;
1875 show_chars_per_line (struct ui_file
*file
, int from_tty
,
1876 struct cmd_list_element
*c
, const char *value
)
1878 fprintf_filtered (file
, _("\
1879 Number of characters gdb thinks are in a line is %s.\n"),
1883 /* Current count of lines printed on this page, chars on this line. */
1884 static unsigned int lines_printed
, chars_printed
;
1886 /* Buffer and start column of buffered text, for doing smarter word-
1887 wrapping. When someone calls wrap_here(), we start buffering output
1888 that comes through fputs_filtered(). If we see a newline, we just
1889 spit it out and forget about the wrap_here(). If we see another
1890 wrap_here(), we spit it out and remember the newer one. If we see
1891 the end of the line, we spit out a newline, the indent, and then
1892 the buffered output. */
1894 /* Malloc'd buffer with chars_per_line+2 bytes. Contains characters which
1895 are waiting to be output (they have already been counted in chars_printed).
1896 When wrap_buffer[0] is null, the buffer is empty. */
1897 static char *wrap_buffer
;
1899 /* Pointer in wrap_buffer to the next character to fill. */
1900 static char *wrap_pointer
;
1902 /* String to indent by if the wrap occurs. Must not be NULL if wrap_column
1904 static char *wrap_indent
;
1906 /* Column number on the screen where wrap_buffer begins, or 0 if wrapping
1907 is not in effect. */
1908 static int wrap_column
;
1911 /* Inialize the number of lines per page and chars per line. */
1914 init_page_info (void)
1917 if (!tui_get_command_dimension (&chars_per_line
, &lines_per_page
))
1922 #if defined(__GO32__)
1923 rows
= ScreenRows ();
1924 cols
= ScreenCols ();
1925 lines_per_page
= rows
;
1926 chars_per_line
= cols
;
1928 /* Make sure Readline has initialized its terminal settings. */
1929 rl_reset_terminal (NULL
);
1931 /* Get the screen size from Readline. */
1932 rl_get_screen_size (&rows
, &cols
);
1933 lines_per_page
= rows
;
1934 chars_per_line
= cols
;
1936 /* Readline should have fetched the termcap entry for us. */
1937 if (tgetnum ("li") < 0 || getenv ("EMACS"))
1939 /* The number of lines per page is not mentioned in the
1940 terminal description. This probably means that paging is
1941 not useful (e.g. emacs shell window), so disable paging. */
1942 lines_per_page
= UINT_MAX
;
1945 /* FIXME: Get rid of this junk. */
1946 #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER)
1947 SIGWINCH_HANDLER (SIGWINCH
);
1950 /* If the output is not a terminal, don't paginate it. */
1951 if (!ui_file_isatty (gdb_stdout
))
1952 lines_per_page
= UINT_MAX
;
1960 /* Set the screen size based on LINES_PER_PAGE and CHARS_PER_LINE. */
1963 set_screen_size (void)
1965 int rows
= lines_per_page
;
1966 int cols
= chars_per_line
;
1974 /* Update Readline's idea of the terminal size. */
1975 rl_set_screen_size (rows
, cols
);
1978 /* Reinitialize WRAP_BUFFER according to the current value of
1984 if (chars_per_line
== 0)
1989 wrap_buffer
= (char *) xmalloc (chars_per_line
+ 2);
1990 wrap_buffer
[0] = '\0';
1993 wrap_buffer
= (char *) xrealloc (wrap_buffer
, chars_per_line
+ 2);
1994 wrap_pointer
= wrap_buffer
; /* Start it at the beginning. */
1998 set_width_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
2005 set_height_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
2010 /* Wait, so the user can read what's on the screen. Prompt the user
2011 to continue by pressing RETURN. */
2014 prompt_for_continue (void)
2017 char cont_prompt
[120];
2019 if (annotation_level
> 1)
2020 printf_unfiltered (("\n\032\032pre-prompt-for-continue\n"));
2022 strcpy (cont_prompt
,
2023 "---Type <return> to continue, or q <return> to quit---");
2024 if (annotation_level
> 1)
2025 strcat (cont_prompt
, "\n\032\032prompt-for-continue\n");
2027 /* We must do this *before* we call gdb_readline, else it will eventually
2028 call us -- thinking that we're trying to print beyond the end of the
2030 reinitialize_more_filter ();
2033 /* On a real operating system, the user can quit with SIGINT.
2036 'q' is provided on all systems so users don't have to change habits
2037 from system to system, and because telling them what to do in
2038 the prompt is more user-friendly than expecting them to think of
2040 /* Call readline, not gdb_readline, because GO32 readline handles control-C
2041 whereas control-C to gdb_readline will cause the user to get dumped
2043 ignore
= gdb_readline_wrapper (cont_prompt
);
2045 if (annotation_level
> 1)
2046 printf_unfiltered (("\n\032\032post-prompt-for-continue\n"));
2051 while (*p
== ' ' || *p
== '\t')
2054 async_request_quit (0);
2059 /* Now we have to do this again, so that GDB will know that it doesn't
2060 need to save the ---Type <return>--- line at the top of the screen. */
2061 reinitialize_more_filter ();
2063 dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */
2066 /* Reinitialize filter; ie. tell it to reset to original values. */
2069 reinitialize_more_filter (void)
2075 /* Indicate that if the next sequence of characters overflows the line,
2076 a newline should be inserted here rather than when it hits the end.
2077 If INDENT is non-null, it is a string to be printed to indent the
2078 wrapped part on the next line. INDENT must remain accessible until
2079 the next call to wrap_here() or until a newline is printed through
2082 If the line is already overfull, we immediately print a newline and
2083 the indentation, and disable further wrapping.
2085 If we don't know the width of lines, but we know the page height,
2086 we must not wrap words, but should still keep track of newlines
2087 that were explicitly printed.
2089 INDENT should not contain tabs, as that will mess up the char count
2090 on the next line. FIXME.
2092 This routine is guaranteed to force out any output which has been
2093 squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be
2094 used to force out output from the wrap_buffer. */
2097 wrap_here (char *indent
)
2099 /* This should have been allocated, but be paranoid anyway. */
2101 internal_error (__FILE__
, __LINE__
, _("failed internal consistency check"));
2105 *wrap_pointer
= '\0';
2106 fputs_unfiltered (wrap_buffer
, gdb_stdout
);
2108 wrap_pointer
= wrap_buffer
;
2109 wrap_buffer
[0] = '\0';
2110 if (chars_per_line
== UINT_MAX
) /* No line overflow checking */
2114 else if (chars_printed
>= chars_per_line
)
2116 puts_filtered ("\n");
2118 puts_filtered (indent
);
2123 wrap_column
= chars_printed
;
2127 wrap_indent
= indent
;
2131 /* Print input string to gdb_stdout, filtered, with wrap,
2132 arranging strings in columns of n chars. String can be
2133 right or left justified in the column. Never prints
2134 trailing spaces. String should never be longer than
2135 width. FIXME: this could be useful for the EXAMINE
2136 command, which currently doesn't tabulate very well */
2139 puts_filtered_tabular (char *string
, int width
, int right
)
2145 gdb_assert (chars_per_line
> 0);
2146 if (chars_per_line
== UINT_MAX
)
2148 fputs_filtered (string
, gdb_stdout
);
2149 fputs_filtered ("\n", gdb_stdout
);
2153 if (((chars_printed
- 1) / width
+ 2) * width
>= chars_per_line
)
2154 fputs_filtered ("\n", gdb_stdout
);
2156 if (width
>= chars_per_line
)
2157 width
= chars_per_line
- 1;
2159 stringlen
= strlen (string
);
2161 if (chars_printed
> 0)
2162 spaces
= width
- (chars_printed
- 1) % width
- 1;
2164 spaces
+= width
- stringlen
;
2166 spacebuf
= alloca (spaces
+ 1);
2167 spacebuf
[spaces
] = '\0';
2169 spacebuf
[spaces
] = ' ';
2171 fputs_filtered (spacebuf
, gdb_stdout
);
2172 fputs_filtered (string
, gdb_stdout
);
2176 /* Ensure that whatever gets printed next, using the filtered output
2177 commands, starts at the beginning of the line. I.E. if there is
2178 any pending output for the current line, flush it and start a new
2179 line. Otherwise do nothing. */
2184 if (chars_printed
> 0)
2186 puts_filtered ("\n");
2191 /* Like fputs but if FILTER is true, pause after every screenful.
2193 Regardless of FILTER can wrap at points other than the final
2194 character of a line.
2196 Unlike fputs, fputs_maybe_filtered does not return a value.
2197 It is OK for LINEBUFFER to be NULL, in which case just don't print
2200 Note that a longjmp to top level may occur in this routine (only if
2201 FILTER is true) (since prompt_for_continue may do so) so this
2202 routine should not be called when cleanups are not in place. */
2205 fputs_maybe_filtered (const char *linebuffer
, struct ui_file
*stream
,
2208 const char *lineptr
;
2210 if (linebuffer
== 0)
2213 /* Don't do any filtering if it is disabled. */
2214 if (stream
!= gdb_stdout
2215 || !pagination_enabled
2216 || (lines_per_page
== UINT_MAX
&& chars_per_line
== UINT_MAX
)
2217 || top_level_interpreter () == NULL
2218 || ui_out_is_mi_like_p (interp_ui_out (top_level_interpreter ())))
2220 fputs_unfiltered (linebuffer
, stream
);
2224 /* Go through and output each character. Show line extension
2225 when this is necessary; prompt user for new page when this is
2228 lineptr
= linebuffer
;
2231 /* Possible new page. */
2232 if (filter
&& (lines_printed
>= lines_per_page
- 1))
2233 prompt_for_continue ();
2235 while (*lineptr
&& *lineptr
!= '\n')
2237 /* Print a single line. */
2238 if (*lineptr
== '\t')
2241 *wrap_pointer
++ = '\t';
2243 fputc_unfiltered ('\t', stream
);
2244 /* Shifting right by 3 produces the number of tab stops
2245 we have already passed, and then adding one and
2246 shifting left 3 advances to the next tab stop. */
2247 chars_printed
= ((chars_printed
>> 3) + 1) << 3;
2253 *wrap_pointer
++ = *lineptr
;
2255 fputc_unfiltered (*lineptr
, stream
);
2260 if (chars_printed
>= chars_per_line
)
2262 unsigned int save_chars
= chars_printed
;
2266 /* If we aren't actually wrapping, don't output newline --
2267 if chars_per_line is right, we probably just overflowed
2268 anyway; if it's wrong, let us keep going. */
2270 fputc_unfiltered ('\n', stream
);
2272 /* Possible new page. */
2273 if (lines_printed
>= lines_per_page
- 1)
2274 prompt_for_continue ();
2276 /* Now output indentation and wrapped string */
2279 fputs_unfiltered (wrap_indent
, stream
);
2280 *wrap_pointer
= '\0'; /* Null-terminate saved stuff */
2281 fputs_unfiltered (wrap_buffer
, stream
); /* and eject it */
2282 /* FIXME, this strlen is what prevents wrap_indent from
2283 containing tabs. However, if we recurse to print it
2284 and count its chars, we risk trouble if wrap_indent is
2285 longer than (the user settable) chars_per_line.
2286 Note also that this can set chars_printed > chars_per_line
2287 if we are printing a long string. */
2288 chars_printed
= strlen (wrap_indent
)
2289 + (save_chars
- wrap_column
);
2290 wrap_pointer
= wrap_buffer
; /* Reset buffer */
2291 wrap_buffer
[0] = '\0';
2292 wrap_column
= 0; /* And disable fancy wrap */
2297 if (*lineptr
== '\n')
2300 wrap_here ((char *) 0); /* Spit out chars, cancel further wraps */
2302 fputc_unfiltered ('\n', stream
);
2309 fputs_filtered (const char *linebuffer
, struct ui_file
*stream
)
2311 fputs_maybe_filtered (linebuffer
, stream
, 1);
2315 putchar_unfiltered (int c
)
2318 ui_file_write (gdb_stdout
, &buf
, 1);
2322 /* Write character C to gdb_stdout using GDB's paging mechanism and return C.
2323 May return nonlocally. */
2326 putchar_filtered (int c
)
2328 return fputc_filtered (c
, gdb_stdout
);
2332 fputc_unfiltered (int c
, struct ui_file
*stream
)
2335 ui_file_write (stream
, &buf
, 1);
2340 fputc_filtered (int c
, struct ui_file
*stream
)
2346 fputs_filtered (buf
, stream
);
2350 /* puts_debug is like fputs_unfiltered, except it prints special
2351 characters in printable fashion. */
2354 puts_debug (char *prefix
, char *string
, char *suffix
)
2358 /* Print prefix and suffix after each line. */
2359 static int new_line
= 1;
2360 static int return_p
= 0;
2361 static char *prev_prefix
= "";
2362 static char *prev_suffix
= "";
2364 if (*string
== '\n')
2367 /* If the prefix is changing, print the previous suffix, a new line,
2368 and the new prefix. */
2369 if ((return_p
|| (strcmp (prev_prefix
, prefix
) != 0)) && !new_line
)
2371 fputs_unfiltered (prev_suffix
, gdb_stdlog
);
2372 fputs_unfiltered ("\n", gdb_stdlog
);
2373 fputs_unfiltered (prefix
, gdb_stdlog
);
2376 /* Print prefix if we printed a newline during the previous call. */
2380 fputs_unfiltered (prefix
, gdb_stdlog
);
2383 prev_prefix
= prefix
;
2384 prev_suffix
= suffix
;
2386 /* Output characters in a printable format. */
2387 while ((ch
= *string
++) != '\0')
2393 fputc_unfiltered (ch
, gdb_stdlog
);
2396 fprintf_unfiltered (gdb_stdlog
, "\\x%02x", ch
& 0xff);
2400 fputs_unfiltered ("\\\\", gdb_stdlog
);
2403 fputs_unfiltered ("\\b", gdb_stdlog
);
2406 fputs_unfiltered ("\\f", gdb_stdlog
);
2410 fputs_unfiltered ("\\n", gdb_stdlog
);
2413 fputs_unfiltered ("\\r", gdb_stdlog
);
2416 fputs_unfiltered ("\\t", gdb_stdlog
);
2419 fputs_unfiltered ("\\v", gdb_stdlog
);
2423 return_p
= ch
== '\r';
2426 /* Print suffix if we printed a newline. */
2429 fputs_unfiltered (suffix
, gdb_stdlog
);
2430 fputs_unfiltered ("\n", gdb_stdlog
);
2435 /* Print a variable number of ARGS using format FORMAT. If this
2436 information is going to put the amount written (since the last call
2437 to REINITIALIZE_MORE_FILTER or the last page break) over the page size,
2438 call prompt_for_continue to get the users permision to continue.
2440 Unlike fprintf, this function does not return a value.
2442 We implement three variants, vfprintf (takes a vararg list and stream),
2443 fprintf (takes a stream to write on), and printf (the usual).
2445 Note also that a longjmp to top level may occur in this routine
2446 (since prompt_for_continue may do so) so this routine should not be
2447 called when cleanups are not in place. */
2450 vfprintf_maybe_filtered (struct ui_file
*stream
, const char *format
,
2451 va_list args
, int filter
)
2454 struct cleanup
*old_cleanups
;
2456 linebuffer
= xstrvprintf (format
, args
);
2457 old_cleanups
= make_cleanup (xfree
, linebuffer
);
2458 fputs_maybe_filtered (linebuffer
, stream
, filter
);
2459 do_cleanups (old_cleanups
);
2464 vfprintf_filtered (struct ui_file
*stream
, const char *format
, va_list args
)
2466 vfprintf_maybe_filtered (stream
, format
, args
, 1);
2470 vfprintf_unfiltered (struct ui_file
*stream
, const char *format
, va_list args
)
2473 struct cleanup
*old_cleanups
;
2475 linebuffer
= xstrvprintf (format
, args
);
2476 old_cleanups
= make_cleanup (xfree
, linebuffer
);
2477 if (debug_timestamp
&& stream
== gdb_stdlog
)
2483 gettimeofday (&tm
, NULL
);
2485 len
= strlen (linebuffer
);
2486 need_nl
= (len
> 0 && linebuffer
[len
- 1] != '\n');
2488 timestamp
= xstrprintf ("%ld:%ld %s%s",
2489 (long) tm
.tv_sec
, (long) tm
.tv_usec
,
2491 need_nl
? "\n": "");
2492 make_cleanup (xfree
, timestamp
);
2493 fputs_unfiltered (timestamp
, stream
);
2496 fputs_unfiltered (linebuffer
, stream
);
2497 do_cleanups (old_cleanups
);
2501 vprintf_filtered (const char *format
, va_list args
)
2503 vfprintf_maybe_filtered (gdb_stdout
, format
, args
, 1);
2507 vprintf_unfiltered (const char *format
, va_list args
)
2509 vfprintf_unfiltered (gdb_stdout
, format
, args
);
2513 fprintf_filtered (struct ui_file
*stream
, const char *format
, ...)
2516 va_start (args
, format
);
2517 vfprintf_filtered (stream
, format
, args
);
2522 fprintf_unfiltered (struct ui_file
*stream
, const char *format
, ...)
2525 va_start (args
, format
);
2526 vfprintf_unfiltered (stream
, format
, args
);
2530 /* Like fprintf_filtered, but prints its result indented.
2531 Called as fprintfi_filtered (spaces, stream, format, ...); */
2534 fprintfi_filtered (int spaces
, struct ui_file
*stream
, const char *format
,
2538 va_start (args
, format
);
2539 print_spaces_filtered (spaces
, stream
);
2541 vfprintf_filtered (stream
, format
, args
);
2547 printf_filtered (const char *format
, ...)
2550 va_start (args
, format
);
2551 vfprintf_filtered (gdb_stdout
, format
, args
);
2557 printf_unfiltered (const char *format
, ...)
2560 va_start (args
, format
);
2561 vfprintf_unfiltered (gdb_stdout
, format
, args
);
2565 /* Like printf_filtered, but prints it's result indented.
2566 Called as printfi_filtered (spaces, format, ...); */
2569 printfi_filtered (int spaces
, const char *format
, ...)
2572 va_start (args
, format
);
2573 print_spaces_filtered (spaces
, gdb_stdout
);
2574 vfprintf_filtered (gdb_stdout
, format
, args
);
2578 /* Easy -- but watch out!
2580 This routine is *not* a replacement for puts()! puts() appends a newline.
2581 This one doesn't, and had better not! */
2584 puts_filtered (const char *string
)
2586 fputs_filtered (string
, gdb_stdout
);
2590 puts_unfiltered (const char *string
)
2592 fputs_unfiltered (string
, gdb_stdout
);
2595 /* Return a pointer to N spaces and a null. The pointer is good
2596 until the next call to here. */
2601 static char *spaces
= 0;
2602 static int max_spaces
= -1;
2608 spaces
= (char *) xmalloc (n
+ 1);
2609 for (t
= spaces
+ n
; t
!= spaces
;)
2615 return spaces
+ max_spaces
- n
;
2618 /* Print N spaces. */
2620 print_spaces_filtered (int n
, struct ui_file
*stream
)
2622 fputs_filtered (n_spaces (n
), stream
);
2625 /* C++/ObjC demangler stuff. */
2627 /* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language
2628 LANG, using demangling args ARG_MODE, and print it filtered to STREAM.
2629 If the name is not mangled, or the language for the name is unknown, or
2630 demangling is off, the name is printed in its "raw" form. */
2633 fprintf_symbol_filtered (struct ui_file
*stream
, char *name
,
2634 enum language lang
, int arg_mode
)
2640 /* If user wants to see raw output, no problem. */
2643 fputs_filtered (name
, stream
);
2647 demangled
= language_demangle (language_def (lang
), name
, arg_mode
);
2648 fputs_filtered (demangled
? demangled
: name
, stream
);
2649 if (demangled
!= NULL
)
2657 /* Do a strcmp() type operation on STRING1 and STRING2, ignoring any
2658 differences in whitespace. Returns 0 if they match, non-zero if they
2659 don't (slightly different than strcmp()'s range of return values).
2661 As an extra hack, string1=="FOO(ARGS)" matches string2=="FOO".
2662 This "feature" is useful when searching for matching C++ function names
2663 (such as if the user types 'break FOO', where FOO is a mangled C++
2667 strcmp_iw (const char *string1
, const char *string2
)
2669 while ((*string1
!= '\0') && (*string2
!= '\0'))
2671 while (isspace (*string1
))
2675 while (isspace (*string2
))
2679 if (*string1
!= *string2
)
2683 if (*string1
!= '\0')
2689 return (*string1
!= '\0' && *string1
!= '(') || (*string2
!= '\0');
2692 /* This is like strcmp except that it ignores whitespace and treats
2693 '(' as the first non-NULL character in terms of ordering. Like
2694 strcmp (and unlike strcmp_iw), it returns negative if STRING1 <
2695 STRING2, 0 if STRING2 = STRING2, and positive if STRING1 > STRING2
2696 according to that ordering.
2698 If a list is sorted according to this function and if you want to
2699 find names in the list that match some fixed NAME according to
2700 strcmp_iw(LIST_ELT, NAME), then the place to start looking is right
2701 where this function would put NAME.
2703 Here are some examples of why using strcmp to sort is a bad idea:
2707 Say your partial symtab contains: "foo<char *>", "goo". Then, if
2708 we try to do a search for "foo<char*>", strcmp will locate this
2709 after "foo<char *>" and before "goo". Then lookup_partial_symbol
2710 will start looking at strings beginning with "goo", and will never
2711 see the correct match of "foo<char *>".
2713 Parenthesis example:
2715 In practice, this is less like to be an issue, but I'll give it a
2716 shot. Let's assume that '$' is a legitimate character to occur in
2717 symbols. (Which may well even be the case on some systems.) Then
2718 say that the partial symbol table contains "foo$" and "foo(int)".
2719 strcmp will put them in this order, since '$' < '('. Now, if the
2720 user searches for "foo", then strcmp will sort "foo" before "foo$".
2721 Then lookup_partial_symbol will notice that strcmp_iw("foo$",
2722 "foo") is false, so it won't proceed to the actual match of
2723 "foo(int)" with "foo". */
2726 strcmp_iw_ordered (const char *string1
, const char *string2
)
2728 while ((*string1
!= '\0') && (*string2
!= '\0'))
2730 while (isspace (*string1
))
2734 while (isspace (*string2
))
2738 if (*string1
!= *string2
)
2742 if (*string1
!= '\0')
2751 /* Characters are non-equal unless they're both '\0'; we want to
2752 make sure we get the comparison right according to our
2753 comparison in the cases where one of them is '\0' or '('. */
2755 if (*string2
== '\0')
2760 if (*string2
== '\0')
2765 if (*string2
== '(')
2768 return *string1
- *string2
;
2772 /* A simple comparison function with opposite semantics to strcmp. */
2775 streq (const char *lhs
, const char *rhs
)
2777 return !strcmp (lhs
, rhs
);
2783 ** Answer whether string_to_compare is a full or partial match to
2784 ** template_string. The partial match must be in sequence starting
2788 subset_compare (char *string_to_compare
, char *template_string
)
2791 if (template_string
!= (char *) NULL
&& string_to_compare
!= (char *) NULL
2792 && strlen (string_to_compare
) <= strlen (template_string
))
2795 (template_string
, string_to_compare
, strlen (string_to_compare
)) == 0);
2802 pagination_on_command (char *arg
, int from_tty
)
2804 pagination_enabled
= 1;
2808 pagination_off_command (char *arg
, int from_tty
)
2810 pagination_enabled
= 0;
2814 show_debug_timestamp (struct ui_file
*file
, int from_tty
,
2815 struct cmd_list_element
*c
, const char *value
)
2817 fprintf_filtered (file
, _("Timestamping debugging messages is %s.\n"), value
);
2822 initialize_utils (void)
2824 struct cmd_list_element
*c
;
2826 add_setshow_uinteger_cmd ("width", class_support
, &chars_per_line
, _("\
2827 Set number of characters gdb thinks are in a line."), _("\
2828 Show number of characters gdb thinks are in a line."), NULL
,
2830 show_chars_per_line
,
2831 &setlist
, &showlist
);
2833 add_setshow_uinteger_cmd ("height", class_support
, &lines_per_page
, _("\
2834 Set number of lines gdb thinks are in a page."), _("\
2835 Show number of lines gdb thinks are in a page."), NULL
,
2837 show_lines_per_page
,
2838 &setlist
, &showlist
);
2842 add_setshow_boolean_cmd ("demangle", class_support
, &demangle
, _("\
2843 Set demangling of encoded C++/ObjC names when displaying symbols."), _("\
2844 Show demangling of encoded C++/ObjC names when displaying symbols."), NULL
,
2847 &setprintlist
, &showprintlist
);
2849 add_setshow_boolean_cmd ("pagination", class_support
,
2850 &pagination_enabled
, _("\
2851 Set state of pagination."), _("\
2852 Show state of pagination."), NULL
,
2854 show_pagination_enabled
,
2855 &setlist
, &showlist
);
2859 add_com ("am", class_support
, pagination_on_command
,
2860 _("Enable pagination"));
2861 add_com ("sm", class_support
, pagination_off_command
,
2862 _("Disable pagination"));
2865 add_setshow_boolean_cmd ("sevenbit-strings", class_support
,
2866 &sevenbit_strings
, _("\
2867 Set printing of 8-bit characters in strings as \\nnn."), _("\
2868 Show printing of 8-bit characters in strings as \\nnn."), NULL
,
2870 show_sevenbit_strings
,
2871 &setprintlist
, &showprintlist
);
2873 add_setshow_boolean_cmd ("asm-demangle", class_support
, &asm_demangle
, _("\
2874 Set demangling of C++/ObjC names in disassembly listings."), _("\
2875 Show demangling of C++/ObjC names in disassembly listings."), NULL
,
2878 &setprintlist
, &showprintlist
);
2880 add_setshow_boolean_cmd ("timestamp", class_maintenance
,
2881 &debug_timestamp
, _("\
2882 Set timestamping of debugging messages."), _("\
2883 Show timestamping of debugging messages."), _("\
2884 When set, debugging messages will be marked with seconds and microseconds."),
2886 show_debug_timestamp
,
2887 &setdebuglist
, &showdebuglist
);
2890 /* Machine specific function to handle SIGWINCH signal. */
2892 #ifdef SIGWINCH_HANDLER_BODY
2893 SIGWINCH_HANDLER_BODY
2895 /* print routines to handle variable size regs, etc. */
2896 /* temporary storage using circular buffer */
2902 static char buf
[NUMCELLS
][CELLSIZE
];
2903 static int cell
= 0;
2904 if (++cell
>= NUMCELLS
)
2910 paddress (struct gdbarch
*gdbarch
, CORE_ADDR addr
)
2912 /* Truncate address to the size of a target address, avoiding shifts
2913 larger or equal than the width of a CORE_ADDR. The local
2914 variable ADDR_BIT stops the compiler reporting a shift overflow
2915 when it won't occur. */
2916 /* NOTE: This assumes that the significant address information is
2917 kept in the least significant bits of ADDR - the upper bits were
2918 either zero or sign extended. Should gdbarch_address_to_pointer or
2919 some ADDRESS_TO_PRINTABLE() be used to do the conversion? */
2921 int addr_bit
= gdbarch_addr_bit (gdbarch
);
2923 if (addr_bit
< (sizeof (CORE_ADDR
) * HOST_CHAR_BIT
))
2924 addr
&= ((CORE_ADDR
) 1 << addr_bit
) - 1;
2925 return hex_string (addr
);
2929 decimal2str (char *sign
, ULONGEST addr
, int width
)
2931 /* Steal code from valprint.c:print_decimal(). Should this worry
2932 about the real size of addr as the above does? */
2933 unsigned long temp
[3];
2934 char *str
= get_cell ();
2939 temp
[i
] = addr
% (1000 * 1000 * 1000);
2940 addr
/= (1000 * 1000 * 1000);
2944 while (addr
!= 0 && i
< (sizeof (temp
) / sizeof (temp
[0])));
2953 xsnprintf (str
, CELLSIZE
, "%s%0*lu", sign
, width
, temp
[0]);
2956 xsnprintf (str
, CELLSIZE
, "%s%0*lu%09lu", sign
, width
,
2960 xsnprintf (str
, CELLSIZE
, "%s%0*lu%09lu%09lu", sign
, width
,
2961 temp
[2], temp
[1], temp
[0]);
2964 internal_error (__FILE__
, __LINE__
,
2965 _("failed internal consistency check"));
2972 octal2str (ULONGEST addr
, int width
)
2974 unsigned long temp
[3];
2975 char *str
= get_cell ();
2980 temp
[i
] = addr
% (0100000 * 0100000);
2981 addr
/= (0100000 * 0100000);
2985 while (addr
!= 0 && i
< (sizeof (temp
) / sizeof (temp
[0])));
2995 xsnprintf (str
, CELLSIZE
, "%*o", width
, 0);
2997 xsnprintf (str
, CELLSIZE
, "0%0*lo", width
, temp
[0]);
3000 xsnprintf (str
, CELLSIZE
, "0%0*lo%010lo", width
, temp
[1], temp
[0]);
3003 xsnprintf (str
, CELLSIZE
, "0%0*lo%010lo%010lo", width
,
3004 temp
[2], temp
[1], temp
[0]);
3007 internal_error (__FILE__
, __LINE__
,
3008 _("failed internal consistency check"));
3015 pulongest (ULONGEST u
)
3017 return decimal2str ("", u
, 0);
3021 plongest (LONGEST l
)
3024 return decimal2str ("-", -l
, 0);
3026 return decimal2str ("", l
, 0);
3029 /* Eliminate warning from compiler on 32-bit systems. */
3030 static int thirty_two
= 32;
3033 phex (ULONGEST l
, int sizeof_l
)
3041 xsnprintf (str
, CELLSIZE
, "%08lx%08lx",
3042 (unsigned long) (l
>> thirty_two
),
3043 (unsigned long) (l
& 0xffffffff));
3047 xsnprintf (str
, CELLSIZE
, "%08lx", (unsigned long) l
);
3051 xsnprintf (str
, CELLSIZE
, "%04x", (unsigned short) (l
& 0xffff));
3054 str
= phex (l
, sizeof (l
));
3062 phex_nz (ULONGEST l
, int sizeof_l
)
3070 unsigned long high
= (unsigned long) (l
>> thirty_two
);
3073 xsnprintf (str
, CELLSIZE
, "%lx",
3074 (unsigned long) (l
& 0xffffffff));
3076 xsnprintf (str
, CELLSIZE
, "%lx%08lx", high
,
3077 (unsigned long) (l
& 0xffffffff));
3082 xsnprintf (str
, CELLSIZE
, "%lx", (unsigned long) l
);
3086 xsnprintf (str
, CELLSIZE
, "%x", (unsigned short) (l
& 0xffff));
3089 str
= phex_nz (l
, sizeof (l
));
3096 /* Converts a LONGEST to a C-format hexadecimal literal and stores it
3097 in a static string. Returns a pointer to this string. */
3099 hex_string (LONGEST num
)
3101 char *result
= get_cell ();
3102 xsnprintf (result
, CELLSIZE
, "0x%s", phex_nz (num
, sizeof (num
)));
3106 /* Converts a LONGEST number to a C-format hexadecimal literal and
3107 stores it in a static string. Returns a pointer to this string
3108 that is valid until the next call. The number is padded on the
3109 left with 0s to at least WIDTH characters. */
3111 hex_string_custom (LONGEST num
, int width
)
3113 char *result
= get_cell ();
3114 char *result_end
= result
+ CELLSIZE
- 1;
3115 const char *hex
= phex_nz (num
, sizeof (num
));
3116 int hex_len
= strlen (hex
);
3118 if (hex_len
> width
)
3120 if (width
+ 2 >= CELLSIZE
)
3121 internal_error (__FILE__
, __LINE__
,
3122 _("hex_string_custom: insufficient space to store result"));
3124 strcpy (result_end
- width
- 2, "0x");
3125 memset (result_end
- width
, '0', width
);
3126 strcpy (result_end
- hex_len
, hex
);
3127 return result_end
- width
- 2;
3130 /* Convert VAL to a numeral in the given radix. For
3131 * radix 10, IS_SIGNED may be true, indicating a signed quantity;
3132 * otherwise VAL is interpreted as unsigned. If WIDTH is supplied,
3133 * it is the minimum width (0-padded if needed). USE_C_FORMAT means
3134 * to use C format in all cases. If it is false, then 'x'
3135 * and 'o' formats do not include a prefix (0x or leading 0). */
3138 int_string (LONGEST val
, int radix
, int is_signed
, int width
,
3147 result
= hex_string (val
);
3149 result
= hex_string_custom (val
, width
);
3156 if (is_signed
&& val
< 0)
3157 return decimal2str ("-", -val
, width
);
3159 return decimal2str ("", val
, width
);
3163 char *result
= octal2str (val
, width
);
3164 if (use_c_format
|| val
== 0)
3170 internal_error (__FILE__
, __LINE__
,
3171 _("failed internal consistency check"));
3175 /* Convert a CORE_ADDR into a string. */
3177 core_addr_to_string (const CORE_ADDR addr
)
3179 char *str
= get_cell ();
3181 strcat (str
, phex (addr
, sizeof (addr
)));
3186 core_addr_to_string_nz (const CORE_ADDR addr
)
3188 char *str
= get_cell ();
3190 strcat (str
, phex_nz (addr
, sizeof (addr
)));
3194 /* Convert a string back into a CORE_ADDR. */
3196 string_to_core_addr (const char *my_string
)
3200 if (my_string
[0] == '0' && tolower (my_string
[1]) == 'x')
3202 /* Assume that it is in hex. */
3204 for (i
= 2; my_string
[i
] != '\0'; i
++)
3206 if (isdigit (my_string
[i
]))
3207 addr
= (my_string
[i
] - '0') + (addr
* 16);
3208 else if (isxdigit (my_string
[i
]))
3209 addr
= (tolower (my_string
[i
]) - 'a' + 0xa) + (addr
* 16);
3211 error (_("invalid hex \"%s\""), my_string
);
3216 /* Assume that it is in decimal. */
3218 for (i
= 0; my_string
[i
] != '\0'; i
++)
3220 if (isdigit (my_string
[i
]))
3221 addr
= (my_string
[i
] - '0') + (addr
* 10);
3223 error (_("invalid decimal \"%s\""), my_string
);
3231 host_address_to_string (const void *addr
)
3233 char *str
= get_cell ();
3235 xsnprintf (str
, CELLSIZE
, "0x%s", phex_nz ((uintptr_t) addr
, sizeof (addr
)));
3240 gdb_realpath (const char *filename
)
3242 /* Method 1: The system has a compile time upper bound on a filename
3243 path. Use that and realpath() to canonicalize the name. This is
3244 the most common case. Note that, if there isn't a compile time
3245 upper bound, you want to avoid realpath() at all costs. */
3246 #if defined(HAVE_REALPATH)
3248 # if defined (PATH_MAX)
3250 # define USE_REALPATH
3251 # elif defined (MAXPATHLEN)
3252 char buf
[MAXPATHLEN
];
3253 # define USE_REALPATH
3255 # if defined (USE_REALPATH)
3256 const char *rp
= realpath (filename
, buf
);
3259 return xstrdup (rp
);
3262 #endif /* HAVE_REALPATH */
3264 /* Method 2: The host system (i.e., GNU) has the function
3265 canonicalize_file_name() which malloc's a chunk of memory and
3266 returns that, use that. */
3267 #if defined(HAVE_CANONICALIZE_FILE_NAME)
3269 char *rp
= canonicalize_file_name (filename
);
3271 return xstrdup (filename
);
3277 /* FIXME: cagney/2002-11-13:
3279 Method 2a: Use realpath() with a NULL buffer. Some systems, due
3280 to the problems described in in method 3, have modified their
3281 realpath() implementation so that it will allocate a buffer when
3282 NULL is passed in. Before this can be used, though, some sort of
3283 configure time test would need to be added. Otherwize the code
3284 will likely core dump. */
3286 /* Method 3: Now we're getting desperate! The system doesn't have a
3287 compile time buffer size and no alternative function. Query the
3288 OS, using pathconf(), for the buffer limit. Care is needed
3289 though, some systems do not limit PATH_MAX (return -1 for
3290 pathconf()) making it impossible to pass a correctly sized buffer
3291 to realpath() (it could always overflow). On those systems, we
3293 #if defined (HAVE_REALPATH) && defined (HAVE_UNISTD_H) && defined(HAVE_ALLOCA)
3295 /* Find out the max path size. */
3296 long path_max
= pathconf ("/", _PC_PATH_MAX
);
3299 /* PATH_MAX is bounded. */
3300 char *buf
= alloca (path_max
);
3301 char *rp
= realpath (filename
, buf
);
3302 return xstrdup (rp
? rp
: filename
);
3307 /* This system is a lost cause, just dup the buffer. */
3308 return xstrdup (filename
);
3311 /* Return a copy of FILENAME, with its directory prefix canonicalized
3315 xfullpath (const char *filename
)
3317 const char *base_name
= lbasename (filename
);
3322 /* Extract the basename of filename, and return immediately
3323 a copy of filename if it does not contain any directory prefix. */
3324 if (base_name
== filename
)
3325 return xstrdup (filename
);
3327 dir_name
= alloca ((size_t) (base_name
- filename
+ 2));
3328 /* Allocate enough space to store the dir_name + plus one extra
3329 character sometimes needed under Windows (see below), and
3330 then the closing \000 character */
3331 strncpy (dir_name
, filename
, base_name
- filename
);
3332 dir_name
[base_name
- filename
] = '\000';
3334 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
3335 /* We need to be careful when filename is of the form 'd:foo', which
3336 is equivalent of d:./foo, which is totally different from d:/foo. */
3337 if (strlen (dir_name
) == 2 && isalpha (dir_name
[0]) && dir_name
[1] == ':')
3340 dir_name
[3] = '\000';
3344 /* Canonicalize the directory prefix, and build the resulting
3345 filename. If the dirname realpath already contains an ending
3346 directory separator, avoid doubling it. */
3347 real_path
= gdb_realpath (dir_name
);
3348 if (IS_DIR_SEPARATOR (real_path
[strlen (real_path
) - 1]))
3349 result
= concat (real_path
, base_name
, (char *)NULL
);
3351 result
= concat (real_path
, SLASH_STRING
, base_name
, (char *)NULL
);
3358 /* This is the 32-bit CRC function used by the GNU separate debug
3359 facility. An executable may contain a section named
3360 .gnu_debuglink, which holds the name of a separate executable file
3361 containing its debug info, and a checksum of that file's contents,
3362 computed using this function. */
3364 gnu_debuglink_crc32 (unsigned long crc
, unsigned char *buf
, size_t len
)
3366 static const unsigned int crc32_table
[256] = {
3367 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419,
3368 0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4,
3369 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07,
3370 0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,
3371 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856,
3372 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
3373 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4,
3374 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
3375 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3,
3376 0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a,
3377 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599,
3378 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
3379 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190,
3380 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f,
3381 0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e,
3382 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
3383 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed,
3384 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
3385 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3,
3386 0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2,
3387 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a,
3388 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5,
3389 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010,
3390 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
3391 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17,
3392 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6,
3393 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615,
3394 0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,
3395 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344,
3396 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
3397 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a,
3398 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
3399 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1,
3400 0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c,
3401 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef,
3402 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
3403 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe,
3404 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31,
3405 0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c,
3406 0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
3407 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b,
3408 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
3409 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1,
3410 0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,
3411 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278,
3412 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7,
3413 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66,
3414 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
3415 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605,
3416 0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8,
3417 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b,
3422 crc
= ~crc
& 0xffffffff;
3423 for (end
= buf
+ len
; buf
< end
; ++buf
)
3424 crc
= crc32_table
[(crc
^ *buf
) & 0xff] ^ (crc
>> 8);
3425 return ~crc
& 0xffffffff;;
3429 align_up (ULONGEST v
, int n
)
3431 /* Check that N is really a power of two. */
3432 gdb_assert (n
&& (n
& (n
-1)) == 0);
3433 return (v
+ n
- 1) & -n
;
3437 align_down (ULONGEST v
, int n
)
3439 /* Check that N is really a power of two. */
3440 gdb_assert (n
&& (n
& (n
-1)) == 0);
3444 /* Allocation function for the libiberty hash table which uses an
3445 obstack. The obstack is passed as DATA. */
3448 hashtab_obstack_allocate (void *data
, size_t size
, size_t count
)
3450 unsigned int total
= size
* count
;
3451 void *ptr
= obstack_alloc ((struct obstack
*) data
, total
);
3452 memset (ptr
, 0, total
);
3456 /* Trivial deallocation function for the libiberty splay tree and hash
3457 table - don't deallocate anything. Rely on later deletion of the
3458 obstack. DATA will be the obstack, although it is not needed
3462 dummy_obstack_deallocate (void *object
, void *data
)
3467 /* The bit offset of the highest byte in a ULONGEST, for overflow
3470 #define HIGH_BYTE_POSN ((sizeof (ULONGEST) - 1) * HOST_CHAR_BIT)
3472 /* True (non-zero) iff DIGIT is a valid digit in radix BASE,
3473 where 2 <= BASE <= 36. */
3476 is_digit_in_base (unsigned char digit
, int base
)
3478 if (!isalnum (digit
))
3481 return (isdigit (digit
) && digit
< base
+ '0');
3483 return (isdigit (digit
) || tolower (digit
) < base
- 10 + 'a');
3487 digit_to_int (unsigned char c
)
3492 return tolower (c
) - 'a' + 10;
3495 /* As for strtoul, but for ULONGEST results. */
3498 strtoulst (const char *num
, const char **trailer
, int base
)
3500 unsigned int high_part
;
3505 /* Skip leading whitespace. */
3506 while (isspace (num
[i
]))
3509 /* Handle prefixes. */
3512 else if (num
[i
] == '-')
3518 if (base
== 0 || base
== 16)
3520 if (num
[i
] == '0' && (num
[i
+ 1] == 'x' || num
[i
+ 1] == 'X'))
3528 if (base
== 0 && num
[i
] == '0')
3534 if (base
< 2 || base
> 36)
3540 result
= high_part
= 0;
3541 for (; is_digit_in_base (num
[i
], base
); i
+= 1)
3543 result
= result
* base
+ digit_to_int (num
[i
]);
3544 high_part
= high_part
* base
+ (unsigned int) (result
>> HIGH_BYTE_POSN
);
3545 result
&= ((ULONGEST
) 1 << HIGH_BYTE_POSN
) - 1;
3546 if (high_part
> 0xff)
3549 result
= ~ (ULONGEST
) 0;
3556 if (trailer
!= NULL
)
3559 result
= result
+ ((ULONGEST
) high_part
<< HIGH_BYTE_POSN
);
3566 /* Simple, portable version of dirname that does not modify its
3570 ldirname (const char *filename
)
3572 const char *base
= lbasename (filename
);
3575 while (base
> filename
&& IS_DIR_SEPARATOR (base
[-1]))
3578 if (base
== filename
)
3581 dirname
= xmalloc (base
- filename
+ 2);
3582 memcpy (dirname
, filename
, base
- filename
);
3584 /* On DOS based file systems, convert "d:foo" to "d:.", so that we
3585 create "d:./bar" later instead of the (different) "d:/bar". */
3586 if (base
- filename
== 2 && IS_ABSOLUTE_PATH (base
)
3587 && !IS_DIR_SEPARATOR (filename
[0]))
3588 dirname
[base
++ - filename
] = '.';
3590 dirname
[base
- filename
] = '\0';
3594 /* Call libiberty's buildargv, and return the result.
3595 If buildargv fails due to out-of-memory, call nomem.
3596 Therefore, the returned value is guaranteed to be non-NULL,
3597 unless the parameter itself is NULL. */
3600 gdb_buildargv (const char *s
)
3602 char **argv
= buildargv (s
);
3603 if (s
!= NULL
&& argv
== NULL
)
3609 compare_positive_ints (const void *ap
, const void *bp
)
3611 /* Because we know we're comparing two ints which are positive,
3612 there's no danger of overflow here. */
3613 return * (int *) ap
- * (int *) bp
;
3616 #define AMBIGUOUS_MESS1 ".\nMatching formats:"
3617 #define AMBIGUOUS_MESS2 ".\nUse \"set gnutarget format-name\" to specify the format."
3620 gdb_bfd_errmsg (bfd_error_type error_tag
, char **matching
)
3626 /* Check if errmsg just need simple return. */
3627 if (error_tag
!= bfd_error_file_ambiguously_recognized
|| matching
== NULL
)
3628 return bfd_errmsg (error_tag
);
3630 ret_len
= strlen (bfd_errmsg (error_tag
)) + strlen (AMBIGUOUS_MESS1
)
3631 + strlen (AMBIGUOUS_MESS2
);
3632 for (p
= matching
; *p
; p
++)
3633 ret_len
+= strlen (*p
) + 1;
3634 ret
= xmalloc (ret_len
+ 1);
3636 make_cleanup (xfree
, ret
);
3638 strcpy (retp
, bfd_errmsg (error_tag
));
3639 retp
+= strlen (retp
);
3641 strcpy (retp
, AMBIGUOUS_MESS1
);
3642 retp
+= strlen (retp
);
3644 for (p
= matching
; *p
; p
++)
3646 sprintf (retp
, " %s", *p
);
3647 retp
+= strlen (retp
);
3651 strcpy (retp
, AMBIGUOUS_MESS2
);
3656 /* Return ARGS parsed as a valid pid, or throw an error. */
3659 parse_pid_to_attach (char *args
)
3665 error_no_arg (_("process-id to attach"));
3668 pid
= strtoul (args
, &dummy
, 0);
3669 /* Some targets don't set errno on errors, grrr! */
3670 if ((pid
== 0 && dummy
== args
) || dummy
!= &args
[strlen (args
)])
3671 error (_("Illegal process-id: %s."), args
);
3676 /* Provide a prototype to silence -Wmissing-prototypes. */
3677 extern initialize_file_ftype _initialize_utils
;
3680 _initialize_utils (void)
3682 add_internal_problem_command (&internal_error_problem
);
3683 add_internal_problem_command (&internal_warning_problem
);