1 /* General utility routines for GDB, the GNU debugger.
3 Copyright (C) 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
4 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
5 2009, 2010, 2011 Free Software Foundation, Inc.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
23 #include "dyn-string.h"
24 #include "gdb_assert.h"
26 #include "gdb_string.h"
27 #include "event-top.h"
28 #include "exceptions.h"
29 #include "gdbthread.h"
30 #ifdef HAVE_SYS_RESOURCE_H
31 #include <sys/resource.h>
32 #endif /* HAVE_SYS_RESOURCE_H */
35 #include "tui/tui.h" /* For tui_get_command_dimension. */
42 /* SunOS's curses.h has a '#define reg register' in it. Thank you Sun. */
48 #include "timeval-utils.h"
54 #include "expression.h"
58 #include "filenames.h"
60 #include "gdb_obstack.h"
66 #include "inferior.h" /* for signed_pointer_to_address */
68 #include <sys/param.h> /* For MAXPATHLEN */
70 #include "gdb_curses.h"
72 #include "readline/readline.h"
77 #include "gdb_usleep.h"
79 #include "gdb_regex.h"
82 extern PTR
malloc (); /* ARI: PTR */
84 #if !HAVE_DECL_REALLOC
85 extern PTR
realloc (); /* ARI: PTR */
91 /* readline defines this. */
94 void (*deprecated_error_begin_hook
) (void);
96 /* Prototypes for local functions */
98 static void vfprintf_maybe_filtered (struct ui_file
*, const char *,
99 va_list, int) ATTRIBUTE_PRINTF (2, 0);
101 static void fputs_maybe_filtered (const char *, struct ui_file
*, int);
103 static void do_my_cleanups (struct cleanup
**, struct cleanup
*);
105 static void prompt_for_continue (void);
107 static void set_screen_size (void);
108 static void set_width (void);
110 /* A flag indicating whether to timestamp debugging messages. */
112 static int debug_timestamp
= 0;
114 /* Chain of cleanup actions established with make_cleanup,
115 to be executed if an error happens. */
117 static struct cleanup
*cleanup_chain
; /* cleaned up after a failed command */
118 static struct cleanup
*final_cleanup_chain
; /* cleaned up when gdb exits */
120 /* Nonzero if we have job control. */
124 /* Nonzero means a quit has been requested. */
128 /* Nonzero means quit immediately if Control-C is typed now, rather
129 than waiting until QUIT is executed. Be careful in setting this;
130 code which executes with immediate_quit set has to be very careful
131 about being able to deal with being interrupted at any time. It is
132 almost always better to use QUIT; the only exception I can think of
133 is being able to quit out of a system call (using EINTR loses if
134 the SIGINT happens between the previous QUIT and the system call).
135 To immediately quit in the case in which a SIGINT happens between
136 the previous QUIT and setting immediate_quit (desirable anytime we
137 expect to block), call QUIT after setting immediate_quit. */
141 /* Nonzero means that encoded C++/ObjC names should be printed out in their
142 C++/ObjC form rather than raw. */
146 show_demangle (struct ui_file
*file
, int from_tty
,
147 struct cmd_list_element
*c
, const char *value
)
149 fprintf_filtered (file
,
150 _("Demangling of encoded C++/ObjC names "
151 "when displaying symbols is %s.\n"),
155 /* Nonzero means that encoded C++/ObjC names should be printed out in their
156 C++/ObjC form even in assembler language displays. If this is set, but
157 DEMANGLE is zero, names are printed raw, i.e. DEMANGLE controls. */
159 int asm_demangle
= 0;
161 show_asm_demangle (struct ui_file
*file
, int from_tty
,
162 struct cmd_list_element
*c
, const char *value
)
164 fprintf_filtered (file
,
165 _("Demangling of C++/ObjC names in "
166 "disassembly listings is %s.\n"),
170 /* Nonzero means that strings with character values >0x7F should be printed
171 as octal escapes. Zero means just print the value (e.g. it's an
172 international character, and the terminal or window can cope.) */
174 int sevenbit_strings
= 0;
176 show_sevenbit_strings (struct ui_file
*file
, int from_tty
,
177 struct cmd_list_element
*c
, const char *value
)
179 fprintf_filtered (file
, _("Printing of 8-bit characters "
180 "in strings as \\nnn is %s.\n"),
184 /* String to be printed before error messages, if any. */
186 char *error_pre_print
;
188 /* String to be printed before quit messages, if any. */
190 char *quit_pre_print
;
192 /* String to be printed before warning messages, if any. */
194 char *warning_pre_print
= "\nwarning: ";
196 int pagination_enabled
= 1;
198 show_pagination_enabled (struct ui_file
*file
, int from_tty
,
199 struct cmd_list_element
*c
, const char *value
)
201 fprintf_filtered (file
, _("State of pagination is %s.\n"), value
);
206 /* Add a new cleanup to the cleanup_chain,
207 and return the previous chain pointer
208 to be passed later to do_cleanups or discard_cleanups.
209 Args are FUNCTION to clean up with, and ARG to pass to it. */
212 make_cleanup (make_cleanup_ftype
*function
, void *arg
)
214 return make_my_cleanup (&cleanup_chain
, function
, arg
);
218 make_cleanup_dtor (make_cleanup_ftype
*function
, void *arg
,
219 void (*dtor
) (void *))
221 return make_my_cleanup2 (&cleanup_chain
,
222 function
, arg
, dtor
);
226 make_final_cleanup (make_cleanup_ftype
*function
, void *arg
)
228 return make_my_cleanup (&final_cleanup_chain
, function
, arg
);
232 do_freeargv (void *arg
)
234 freeargv ((char **) arg
);
238 make_cleanup_freeargv (char **arg
)
240 return make_my_cleanup (&cleanup_chain
, do_freeargv
, arg
);
244 do_dyn_string_delete (void *arg
)
246 dyn_string_delete ((dyn_string_t
) arg
);
250 make_cleanup_dyn_string_delete (dyn_string_t arg
)
252 return make_my_cleanup (&cleanup_chain
, do_dyn_string_delete
, arg
);
256 do_bfd_close_cleanup (void *arg
)
262 make_cleanup_bfd_close (bfd
*abfd
)
264 return make_cleanup (do_bfd_close_cleanup
, abfd
);
268 do_close_cleanup (void *arg
)
276 make_cleanup_close (int fd
)
278 int *saved_fd
= xmalloc (sizeof (fd
));
281 return make_cleanup_dtor (do_close_cleanup
, saved_fd
, xfree
);
284 /* Helper function which does the work for make_cleanup_fclose. */
287 do_fclose_cleanup (void *arg
)
294 /* Return a new cleanup that closes FILE. */
297 make_cleanup_fclose (FILE *file
)
299 return make_cleanup (do_fclose_cleanup
, file
);
302 /* Helper function which does the work for make_cleanup_obstack_free. */
305 do_obstack_free (void *arg
)
307 struct obstack
*ob
= arg
;
309 obstack_free (ob
, NULL
);
312 /* Return a new cleanup that frees OBSTACK. */
315 make_cleanup_obstack_free (struct obstack
*obstack
)
317 return make_cleanup (do_obstack_free
, obstack
);
321 do_ui_file_delete (void *arg
)
323 ui_file_delete (arg
);
327 make_cleanup_ui_file_delete (struct ui_file
*arg
)
329 return make_my_cleanup (&cleanup_chain
, do_ui_file_delete
, arg
);
332 /* Helper function for make_cleanup_ui_out_redirect_pop. */
335 do_ui_out_redirect_pop (void *arg
)
337 struct ui_out
*uiout
= arg
;
339 if (ui_out_redirect (uiout
, NULL
) < 0)
340 warning (_("Cannot restore redirection of the current output protocol"));
343 /* Return a new cleanup that pops the last redirection by ui_out_redirect
344 with NULL parameter. */
347 make_cleanup_ui_out_redirect_pop (struct ui_out
*uiout
)
349 return make_my_cleanup (&cleanup_chain
, do_ui_out_redirect_pop
, uiout
);
353 do_free_section_addr_info (void *arg
)
355 free_section_addr_info (arg
);
359 make_cleanup_free_section_addr_info (struct section_addr_info
*addrs
)
361 return make_my_cleanup (&cleanup_chain
, do_free_section_addr_info
, addrs
);
364 struct restore_integer_closure
371 restore_integer (void *p
)
373 struct restore_integer_closure
*closure
= p
;
375 *(closure
->variable
) = closure
->value
;
378 /* Remember the current value of *VARIABLE and make it restored when
379 the cleanup is run. */
382 make_cleanup_restore_integer (int *variable
)
384 struct restore_integer_closure
*c
=
385 xmalloc (sizeof (struct restore_integer_closure
));
387 c
->variable
= variable
;
388 c
->value
= *variable
;
390 return make_my_cleanup2 (&cleanup_chain
, restore_integer
, (void *)c
,
394 /* Remember the current value of *VARIABLE and make it restored when
395 the cleanup is run. */
398 make_cleanup_restore_uinteger (unsigned int *variable
)
400 return make_cleanup_restore_integer ((int *) variable
);
403 /* Helper for make_cleanup_unpush_target. */
406 do_unpush_target (void *arg
)
408 struct target_ops
*ops
= arg
;
413 /* Return a new cleanup that unpushes OPS. */
416 make_cleanup_unpush_target (struct target_ops
*ops
)
418 return make_my_cleanup (&cleanup_chain
, do_unpush_target
, ops
);
421 /* Helper for make_cleanup_htab_delete compile time checking the types. */
424 do_htab_delete_cleanup (void *htab_voidp
)
426 htab_t htab
= htab_voidp
;
431 /* Return a new cleanup that deletes HTAB. */
434 make_cleanup_htab_delete (htab_t htab
)
436 return make_cleanup (do_htab_delete_cleanup
, htab
);
439 struct restore_ui_file_closure
441 struct ui_file
**variable
;
442 struct ui_file
*value
;
446 do_restore_ui_file (void *p
)
448 struct restore_ui_file_closure
*closure
= p
;
450 *(closure
->variable
) = closure
->value
;
453 /* Remember the current value of *VARIABLE and make it restored when
454 the cleanup is run. */
457 make_cleanup_restore_ui_file (struct ui_file
**variable
)
459 struct restore_ui_file_closure
*c
= XNEW (struct restore_ui_file_closure
);
461 c
->variable
= variable
;
462 c
->value
= *variable
;
464 return make_cleanup_dtor (do_restore_ui_file
, (void *) c
, xfree
);
467 /* Helper for make_cleanup_value_free_to_mark. */
470 do_value_free_to_mark (void *value
)
472 value_free_to_mark ((struct value
*) value
);
475 /* Free all values allocated since MARK was obtained by value_mark
476 (except for those released) when the cleanup is run. */
479 make_cleanup_value_free_to_mark (struct value
*mark
)
481 return make_my_cleanup (&cleanup_chain
, do_value_free_to_mark
, mark
);
484 /* Helper for make_cleanup_value_free. */
487 do_value_free (void *value
)
495 make_cleanup_value_free (struct value
*value
)
497 return make_my_cleanup (&cleanup_chain
, do_value_free
, value
);
500 /* Helper for make_cleanup_free_so. */
503 do_free_so (void *arg
)
505 struct so_list
*so
= arg
;
510 /* Make cleanup handler calling free_so for SO. */
513 make_cleanup_free_so (struct so_list
*so
)
515 return make_my_cleanup (&cleanup_chain
, do_free_so
, so
);
519 make_my_cleanup2 (struct cleanup
**pmy_chain
, make_cleanup_ftype
*function
,
520 void *arg
, void (*free_arg
) (void *))
523 = (struct cleanup
*) xmalloc (sizeof (struct cleanup
));
524 struct cleanup
*old_chain
= *pmy_chain
;
526 new->next
= *pmy_chain
;
527 new->function
= function
;
528 new->free_arg
= free_arg
;
536 make_my_cleanup (struct cleanup
**pmy_chain
, make_cleanup_ftype
*function
,
539 return make_my_cleanup2 (pmy_chain
, function
, arg
, NULL
);
542 /* Discard cleanups and do the actions they describe
543 until we get back to the point OLD_CHAIN in the cleanup_chain. */
546 do_cleanups (struct cleanup
*old_chain
)
548 do_my_cleanups (&cleanup_chain
, old_chain
);
552 do_final_cleanups (struct cleanup
*old_chain
)
554 do_my_cleanups (&final_cleanup_chain
, old_chain
);
558 do_my_cleanups (struct cleanup
**pmy_chain
,
559 struct cleanup
*old_chain
)
563 while ((ptr
= *pmy_chain
) != old_chain
)
565 *pmy_chain
= ptr
->next
; /* Do this first in case of recursion. */
566 (*ptr
->function
) (ptr
->arg
);
568 (*ptr
->free_arg
) (ptr
->arg
);
573 /* Discard cleanups, not doing the actions they describe,
574 until we get back to the point OLD_CHAIN in the cleanup_chain. */
577 discard_cleanups (struct cleanup
*old_chain
)
579 discard_my_cleanups (&cleanup_chain
, old_chain
);
583 discard_final_cleanups (struct cleanup
*old_chain
)
585 discard_my_cleanups (&final_cleanup_chain
, old_chain
);
589 discard_my_cleanups (struct cleanup
**pmy_chain
,
590 struct cleanup
*old_chain
)
594 while ((ptr
= *pmy_chain
) != old_chain
)
596 *pmy_chain
= ptr
->next
;
598 (*ptr
->free_arg
) (ptr
->arg
);
603 /* Set the cleanup_chain to 0, and return the old cleanup chain. */
607 return save_my_cleanups (&cleanup_chain
);
611 save_final_cleanups (void)
613 return save_my_cleanups (&final_cleanup_chain
);
617 save_my_cleanups (struct cleanup
**pmy_chain
)
619 struct cleanup
*old_chain
= *pmy_chain
;
625 /* Restore the cleanup chain from a previously saved chain. */
627 restore_cleanups (struct cleanup
*chain
)
629 restore_my_cleanups (&cleanup_chain
, chain
);
633 restore_final_cleanups (struct cleanup
*chain
)
635 restore_my_cleanups (&final_cleanup_chain
, chain
);
639 restore_my_cleanups (struct cleanup
**pmy_chain
, struct cleanup
*chain
)
644 /* This function is useful for cleanups.
648 old_chain = make_cleanup (free_current_contents, &foo);
650 to arrange to free the object thus allocated. */
653 free_current_contents (void *ptr
)
655 void **location
= ptr
;
657 if (location
== NULL
)
658 internal_error (__FILE__
, __LINE__
,
659 _("free_current_contents: NULL pointer"));
660 if (*location
!= NULL
)
667 /* Provide a known function that does nothing, to use as a base for
668 a possibly long chain of cleanups. This is useful where we
669 use the cleanup chain for handling normal cleanups as well as dealing
670 with cleanups that need to be done as a result of a call to error().
671 In such cases, we may not be certain where the first cleanup is, unless
672 we have a do-nothing one to always use as the base. */
675 null_cleanup (void *arg
)
679 /* If nonzero, display time usage both at startup and for each command. */
681 static int display_time
;
683 /* If nonzero, display space usage both at startup and for each command. */
685 static int display_space
;
687 /* Records a run time and space usage to be used as a base for
688 reporting elapsed time or change in space. In addition,
689 the msg_type field indicates whether the saved time is from the
690 beginning of GDB execution (0) or the beginning of an individual
691 command execution (1). */
696 struct timeval start_wall_time
;
700 /* Set whether to display time statistics to NEW_VALUE (non-zero
703 set_display_time (int new_value
)
705 display_time
= new_value
;
708 /* Set whether to display space statistics to NEW_VALUE (non-zero
711 set_display_space (int new_value
)
713 display_space
= new_value
;
716 /* As indicated by display_time and display_space, report GDB's elapsed time
717 and space usage from the base time and space provided in ARG, which
718 must be a pointer to a struct cmd_stat. This function is intended
719 to be called as a cleanup. */
721 report_command_stats (void *arg
)
723 struct cmd_stats
*start_stats
= (struct cmd_stats
*) arg
;
724 int msg_type
= start_stats
->msg_type
;
728 long cmd_time
= get_run_time () - start_stats
->start_cpu_time
;
729 struct timeval now_wall_time
, delta_wall_time
;
731 gettimeofday (&now_wall_time
, NULL
);
732 timeval_sub (&delta_wall_time
,
733 &now_wall_time
, &start_stats
->start_wall_time
);
735 printf_unfiltered (msg_type
== 0
736 ? _("Startup time: %ld.%06ld (cpu), %ld.%06ld (wall)\n")
737 : _("Command execution time: %ld.%06ld (cpu), %ld.%06ld (wall)\n"),
738 cmd_time
/ 1000000, cmd_time
% 1000000,
739 delta_wall_time
.tv_sec
, delta_wall_time
.tv_usec
);
745 char *lim
= (char *) sbrk (0);
747 long space_now
= lim
- lim_at_start
;
748 long space_diff
= space_now
- start_stats
->start_space
;
750 printf_unfiltered (msg_type
== 0
751 ? _("Space used: %ld (%s%ld during startup)\n")
752 : _("Space used: %ld (%s%ld for this command)\n"),
754 (space_diff
>= 0 ? "+" : ""),
760 /* Create a cleanup that reports time and space used since its
761 creation. Precise messages depend on MSG_TYPE:
762 0: Initial time/space
763 1: Individual command time/space. */
765 make_command_stats_cleanup (int msg_type
)
767 struct cmd_stats
*new_stat
= XMALLOC (struct cmd_stats
);
770 char *lim
= (char *) sbrk (0);
771 new_stat
->start_space
= lim
- lim_at_start
;
774 new_stat
->msg_type
= msg_type
;
775 new_stat
->start_cpu_time
= get_run_time ();
776 gettimeofday (&new_stat
->start_wall_time
, NULL
);
778 return make_cleanup_dtor (report_command_stats
, new_stat
, xfree
);
783 /* Print a warning message. The first argument STRING is the warning
784 message, used as an fprintf format string, the second is the
785 va_list of arguments for that string. A warning is unfiltered (not
786 paginated) so that the user does not need to page through each
787 screen full of warnings when there are lots of them. */
790 vwarning (const char *string
, va_list args
)
792 if (deprecated_warning_hook
)
793 (*deprecated_warning_hook
) (string
, args
);
796 target_terminal_ours ();
797 wrap_here (""); /* Force out any buffered output. */
798 gdb_flush (gdb_stdout
);
799 if (warning_pre_print
)
800 fputs_unfiltered (warning_pre_print
, gdb_stderr
);
801 vfprintf_unfiltered (gdb_stderr
, string
, args
);
802 fprintf_unfiltered (gdb_stderr
, "\n");
807 /* Print a warning message.
808 The first argument STRING is the warning message, used as a fprintf string,
809 and the remaining args are passed as arguments to it.
810 The primary difference between warnings and errors is that a warning
811 does not force the return to command level. */
814 warning (const char *string
, ...)
818 va_start (args
, string
);
819 vwarning (string
, args
);
823 /* Print an error message and return to command level.
824 The first argument STRING is the error message, used as a fprintf string,
825 and the remaining args are passed as arguments to it. */
828 verror (const char *string
, va_list args
)
830 throw_verror (GENERIC_ERROR
, string
, args
);
834 error (const char *string
, ...)
838 va_start (args
, string
);
839 throw_verror (GENERIC_ERROR
, string
, args
);
843 /* Print an error message and quit.
844 The first argument STRING is the error message, used as a fprintf string,
845 and the remaining args are passed as arguments to it. */
848 vfatal (const char *string
, va_list args
)
850 throw_vfatal (string
, args
);
854 fatal (const char *string
, ...)
858 va_start (args
, string
);
859 throw_vfatal (string
, args
);
864 error_stream (struct ui_file
*stream
)
866 char *message
= ui_file_xstrdup (stream
, NULL
);
868 make_cleanup (xfree
, message
);
869 error (("%s"), message
);
872 /* Dump core trying to increase the core soft limit to hard limit first. */
877 #ifdef HAVE_SETRLIMIT
878 struct rlimit rlim
= { RLIM_INFINITY
, RLIM_INFINITY
};
880 setrlimit (RLIMIT_CORE
, &rlim
);
881 #endif /* HAVE_SETRLIMIT */
883 abort (); /* NOTE: GDB has only three calls to abort(). */
886 /* Check whether GDB will be able to dump core using the dump_core
890 can_dump_core (const char *reason
)
892 #ifdef HAVE_GETRLIMIT
895 /* Be quiet and assume we can dump if an error is returned. */
896 if (getrlimit (RLIMIT_CORE
, &rlim
) != 0)
899 if (rlim
.rlim_max
== 0)
901 fprintf_unfiltered (gdb_stderr
,
902 _("%s\nUnable to dump core, use `ulimit -c"
903 " unlimited' before executing GDB next time.\n"),
907 #endif /* HAVE_GETRLIMIT */
912 /* Allow the user to configure the debugger behavior with respect to
913 what to do when an internal problem is detected. */
915 const char internal_problem_ask
[] = "ask";
916 const char internal_problem_yes
[] = "yes";
917 const char internal_problem_no
[] = "no";
918 static const char *internal_problem_modes
[] =
920 internal_problem_ask
,
921 internal_problem_yes
,
926 /* Print a message reporting an internal error/warning. Ask the user
927 if they want to continue, dump core, or just exit. Return
928 something to indicate a quit. */
930 struct internal_problem
933 const char *should_quit
;
934 const char *should_dump_core
;
937 /* Report a problem, internal to GDB, to the user. Once the problem
938 has been reported, and assuming GDB didn't quit, the caller can
939 either allow execution to resume or throw an error. */
941 static void ATTRIBUTE_PRINTF (4, 0)
942 internal_vproblem (struct internal_problem
*problem
,
943 const char *file
, int line
, const char *fmt
, va_list ap
)
950 /* Don't allow infinite error/warning recursion. */
952 static char msg
[] = "Recursive internal problem.\n";
961 fputs_unfiltered (msg
, gdb_stderr
);
962 abort (); /* NOTE: GDB has only three calls to abort(). */
965 /* Newer GLIBC versions put the warn_unused_result attribute
966 on write, but this is one of those rare cases where
967 ignoring the return value is correct. Casting to (void)
968 does not fix this problem. This is the solution suggested
969 at http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25509. */
970 if (write (STDERR_FILENO
, msg
, sizeof (msg
)) != sizeof (msg
))
971 abort (); /* NOTE: GDB has only three calls to abort(). */
976 /* Try to get the message out and at the start of a new line. */
977 target_terminal_ours ();
980 /* Create a string containing the full error/warning message. Need
981 to call query with this full string, as otherwize the reason
982 (error/warning) and question become separated. Format using a
983 style similar to a compiler error message. Include extra detail
984 so that the user knows that they are living on the edge. */
988 msg
= xstrvprintf (fmt
, ap
);
989 reason
= xstrprintf ("%s:%d: %s: %s\n"
990 "A problem internal to GDB has been detected,\n"
991 "further debugging may prove unreliable.",
992 file
, line
, problem
->name
, msg
);
994 make_cleanup (xfree
, reason
);
997 if (problem
->should_quit
== internal_problem_ask
)
999 /* Default (yes/batch case) is to quit GDB. When in batch mode
1000 this lessens the likelihood of GDB going into an infinite
1004 /* Emit the message and quit. */
1005 fputs_unfiltered (reason
, gdb_stderr
);
1006 fputs_unfiltered ("\n", gdb_stderr
);
1010 quit_p
= query (_("%s\nQuit this debugging session? "), reason
);
1012 else if (problem
->should_quit
== internal_problem_yes
)
1014 else if (problem
->should_quit
== internal_problem_no
)
1017 internal_error (__FILE__
, __LINE__
, _("bad switch"));
1019 if (problem
->should_dump_core
== internal_problem_ask
)
1021 if (!can_dump_core (reason
))
1025 /* Default (yes/batch case) is to dump core. This leaves a GDB
1026 `dropping' so that it is easier to see that something went
1028 dump_core_p
= query (_("%s\nCreate a core file of GDB? "), reason
);
1031 else if (problem
->should_dump_core
== internal_problem_yes
)
1032 dump_core_p
= can_dump_core (reason
);
1033 else if (problem
->should_dump_core
== internal_problem_no
)
1036 internal_error (__FILE__
, __LINE__
, _("bad switch"));
1049 #ifdef HAVE_WORKING_FORK
1059 static struct internal_problem internal_error_problem
= {
1060 "internal-error", internal_problem_ask
, internal_problem_ask
1064 internal_verror (const char *file
, int line
, const char *fmt
, va_list ap
)
1066 internal_vproblem (&internal_error_problem
, file
, line
, fmt
, ap
);
1067 deprecated_throw_reason (RETURN_ERROR
);
1071 internal_error (const char *file
, int line
, const char *string
, ...)
1075 va_start (ap
, string
);
1076 internal_verror (file
, line
, string
, ap
);
1080 static struct internal_problem internal_warning_problem
= {
1081 "internal-warning", internal_problem_ask
, internal_problem_ask
1085 internal_vwarning (const char *file
, int line
, const char *fmt
, va_list ap
)
1087 internal_vproblem (&internal_warning_problem
, file
, line
, fmt
, ap
);
1091 internal_warning (const char *file
, int line
, const char *string
, ...)
1095 va_start (ap
, string
);
1096 internal_vwarning (file
, line
, string
, ap
);
1100 /* Dummy functions to keep add_prefix_cmd happy. */
1103 set_internal_problem_cmd (char *args
, int from_tty
)
1108 show_internal_problem_cmd (char *args
, int from_tty
)
1112 /* When GDB reports an internal problem (error or warning) it gives
1113 the user the opportunity to quit GDB and/or create a core file of
1114 the current debug session. This function registers a few commands
1115 that make it possible to specify that GDB should always or never
1116 quit or create a core file, without asking. The commands look
1119 maint set PROBLEM-NAME quit ask|yes|no
1120 maint show PROBLEM-NAME quit
1121 maint set PROBLEM-NAME corefile ask|yes|no
1122 maint show PROBLEM-NAME corefile
1124 Where PROBLEM-NAME is currently "internal-error" or
1125 "internal-warning". */
1128 add_internal_problem_command (struct internal_problem
*problem
)
1130 struct cmd_list_element
**set_cmd_list
;
1131 struct cmd_list_element
**show_cmd_list
;
1135 set_cmd_list
= xmalloc (sizeof (*set_cmd_list
));
1136 show_cmd_list
= xmalloc (sizeof (*set_cmd_list
));
1137 *set_cmd_list
= NULL
;
1138 *show_cmd_list
= NULL
;
1140 set_doc
= xstrprintf (_("Configure what GDB does when %s is detected."),
1143 show_doc
= xstrprintf (_("Show what GDB does when %s is detected."),
1146 add_prefix_cmd ((char*) problem
->name
,
1147 class_maintenance
, set_internal_problem_cmd
, set_doc
,
1149 concat ("maintenance set ", problem
->name
, " ",
1151 0/*allow-unknown*/, &maintenance_set_cmdlist
);
1153 add_prefix_cmd ((char*) problem
->name
,
1154 class_maintenance
, show_internal_problem_cmd
, show_doc
,
1156 concat ("maintenance show ", problem
->name
, " ",
1158 0/*allow-unknown*/, &maintenance_show_cmdlist
);
1160 set_doc
= xstrprintf (_("Set whether GDB should quit "
1161 "when an %s is detected"),
1163 show_doc
= xstrprintf (_("Show whether GDB will quit "
1164 "when an %s is detected"),
1166 add_setshow_enum_cmd ("quit", class_maintenance
,
1167 internal_problem_modes
,
1168 &problem
->should_quit
,
1171 NULL
, /* help_doc */
1173 NULL
, /* showfunc */
1180 set_doc
= xstrprintf (_("Set whether GDB should create a core "
1181 "file of GDB when %s is detected"),
1183 show_doc
= xstrprintf (_("Show whether GDB will create a core "
1184 "file of GDB when %s is detected"),
1186 add_setshow_enum_cmd ("corefile", class_maintenance
,
1187 internal_problem_modes
,
1188 &problem
->should_dump_core
,
1191 NULL
, /* help_doc */
1193 NULL
, /* showfunc */
1201 /* Print the system error message for errno, and also mention STRING
1202 as the file name for which the error was encountered.
1203 Then return to command level. */
1206 perror_with_name (const char *string
)
1211 err
= safe_strerror (errno
);
1212 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
1213 strcpy (combined
, string
);
1214 strcat (combined
, ": ");
1215 strcat (combined
, err
);
1217 /* I understand setting these is a matter of taste. Still, some people
1218 may clear errno but not know about bfd_error. Doing this here is not
1220 bfd_set_error (bfd_error_no_error
);
1223 error (_("%s."), combined
);
1226 /* Print the system error message for ERRCODE, and also mention STRING
1227 as the file name for which the error was encountered. */
1230 print_sys_errmsg (const char *string
, int errcode
)
1235 err
= safe_strerror (errcode
);
1236 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
1237 strcpy (combined
, string
);
1238 strcat (combined
, ": ");
1239 strcat (combined
, err
);
1241 /* We want anything which was printed on stdout to come out first, before
1243 gdb_flush (gdb_stdout
);
1244 fprintf_unfiltered (gdb_stderr
, "%s.\n", combined
);
1247 /* Control C eventually causes this to be called, at a convenient time. */
1253 /* No steenking SIGINT will ever be coming our way when the
1254 program is resumed. Don't lie. */
1258 /* If there is no terminal switching for this target, then we can't
1259 possibly get screwed by the lack of job control. */
1260 || current_target
.to_terminal_ours
== NULL
)
1263 fatal ("Quit (expect signal SIGINT when the program is resumed)");
1268 /* Called when a memory allocation fails, with the number of bytes of
1269 memory requested in SIZE. */
1272 malloc_failure (long size
)
1276 internal_error (__FILE__
, __LINE__
,
1277 _("virtual memory exhausted: can't allocate %ld bytes."),
1282 internal_error (__FILE__
, __LINE__
, _("virtual memory exhausted."));
1286 /* My replacement for the read system call.
1287 Used like `read' but keeps going if `read' returns too soon. */
1290 myread (int desc
, char *addr
, int len
)
1297 val
= read (desc
, addr
, len
);
1301 return orglen
- len
;
1308 /* Make a copy of the string at PTR with SIZE characters
1309 (and add a null character at the end in the copy).
1310 Uses malloc to get the space. Returns the address of the copy. */
1313 savestring (const char *ptr
, size_t size
)
1315 char *p
= (char *) xmalloc (size
+ 1);
1317 memcpy (p
, ptr
, size
);
1323 print_spaces (int n
, struct ui_file
*file
)
1325 fputs_unfiltered (n_spaces (n
), file
);
1328 /* Print a host address. */
1331 gdb_print_host_address (const void *addr
, struct ui_file
*stream
)
1333 fprintf_filtered (stream
, "%s", host_address_to_string (addr
));
1337 /* A cleanup function that calls regfree. */
1340 do_regfree_cleanup (void *r
)
1345 /* Create a new cleanup that frees the compiled regular expression R. */
1348 make_regfree_cleanup (regex_t
*r
)
1350 return make_cleanup (do_regfree_cleanup
, r
);
1353 /* Return an xmalloc'd error message resulting from a regular
1354 expression compilation failure. */
1357 get_regcomp_error (int code
, regex_t
*rx
)
1359 size_t length
= regerror (code
, rx
, NULL
, 0);
1360 char *result
= xmalloc (length
);
1362 regerror (code
, rx
, result
, length
);
1368 /* This function supports the query, nquery, and yquery functions.
1369 Ask user a y-or-n question and return 0 if answer is no, 1 if
1370 answer is yes, or default the answer to the specified default
1371 (for yquery or nquery). DEFCHAR may be 'y' or 'n' to provide a
1372 default answer, or '\0' for no default.
1373 CTLSTR is the control string and should end in "? ". It should
1374 not say how to answer, because we do that.
1375 ARGS are the arguments passed along with the CTLSTR argument to
1378 static int ATTRIBUTE_PRINTF (1, 0)
1379 defaulted_query (const char *ctlstr
, const char defchar
, va_list args
)
1385 char def_answer
, not_def_answer
;
1386 char *y_string
, *n_string
, *question
;
1388 /* Set up according to which answer is the default. */
1389 if (defchar
== '\0')
1393 not_def_answer
= 'N';
1397 else if (defchar
== 'y')
1401 not_def_answer
= 'N';
1409 not_def_answer
= 'Y';
1414 /* Automatically answer the default value if the user did not want
1415 prompts or the command was issued with the server prefix. */
1416 if (! caution
|| server_command
)
1419 /* If input isn't coming from the user directly, just say what
1420 question we're asking, and then answer the default automatically. This
1421 way, important error messages don't get lost when talking to GDB
1423 if (! input_from_terminal_p ())
1426 vfprintf_filtered (gdb_stdout
, ctlstr
, args
);
1428 printf_filtered (_("(%s or %s) [answered %c; "
1429 "input not from terminal]\n"),
1430 y_string
, n_string
, def_answer
);
1431 gdb_flush (gdb_stdout
);
1436 if (deprecated_query_hook
)
1438 return deprecated_query_hook (ctlstr
, args
);
1441 /* Format the question outside of the loop, to avoid reusing args. */
1442 question
= xstrvprintf (ctlstr
, args
);
1446 wrap_here (""); /* Flush any buffered output. */
1447 gdb_flush (gdb_stdout
);
1449 if (annotation_level
> 1)
1450 printf_filtered (("\n\032\032pre-query\n"));
1452 fputs_filtered (question
, gdb_stdout
);
1453 printf_filtered (_("(%s or %s) "), y_string
, n_string
);
1455 if (annotation_level
> 1)
1456 printf_filtered (("\n\032\032query\n"));
1459 gdb_flush (gdb_stdout
);
1461 answer
= fgetc (stdin
);
1463 /* We expect fgetc to block until a character is read. But
1464 this may not be the case if the terminal was opened with
1465 the NONBLOCK flag. In that case, if there is nothing to
1466 read on stdin, fgetc returns EOF, but also sets the error
1467 condition flag on stdin and errno to EAGAIN. With a true
1468 EOF, stdin's error condition flag is not set.
1470 A situation where this behavior was observed is a pseudo
1472 while (answer
== EOF
&& ferror (stdin
) && errno
== EAGAIN
)
1474 /* Not a real EOF. Wait a little while and try again until
1475 we read something. */
1478 answer
= fgetc (stdin
);
1481 clearerr (stdin
); /* in case of C-d */
1482 if (answer
== EOF
) /* C-d */
1484 printf_filtered ("EOF [assumed %c]\n", def_answer
);
1488 /* Eat rest of input line, to EOF or newline. */
1492 ans2
= fgetc (stdin
);
1495 while (ans2
!= EOF
&& ans2
!= '\n' && ans2
!= '\r');
1499 /* Check answer. For the non-default, the user must specify
1500 the non-default explicitly. */
1501 if (answer
== not_def_answer
)
1503 retval
= !def_value
;
1506 /* Otherwise, if a default was specified, the user may either
1507 specify the required input or have it default by entering
1509 if (answer
== def_answer
1510 || (defchar
!= '\0' &&
1511 (answer
== '\n' || answer
== '\r' || answer
== EOF
)))
1516 /* Invalid entries are not defaulted and require another selection. */
1517 printf_filtered (_("Please answer %s or %s.\n"),
1518 y_string
, n_string
);
1522 if (annotation_level
> 1)
1523 printf_filtered (("\n\032\032post-query\n"));
1528 /* Ask user a y-or-n question and return 0 if answer is no, 1 if
1529 answer is yes, or 0 if answer is defaulted.
1530 Takes three args which are given to printf to print the question.
1531 The first, a control string, should end in "? ".
1532 It should not say how to answer, because we do that. */
1535 nquery (const char *ctlstr
, ...)
1540 va_start (args
, ctlstr
);
1541 ret
= defaulted_query (ctlstr
, 'n', args
);
1546 /* Ask user a y-or-n question and return 0 if answer is no, 1 if
1547 answer is yes, or 1 if answer is defaulted.
1548 Takes three args which are given to printf to print the question.
1549 The first, a control string, should end in "? ".
1550 It should not say how to answer, because we do that. */
1553 yquery (const char *ctlstr
, ...)
1558 va_start (args
, ctlstr
);
1559 ret
= defaulted_query (ctlstr
, 'y', args
);
1564 /* Ask user a y-or-n question and return 1 iff answer is yes.
1565 Takes three args which are given to printf to print the question.
1566 The first, a control string, should end in "? ".
1567 It should not say how to answer, because we do that. */
1570 query (const char *ctlstr
, ...)
1575 va_start (args
, ctlstr
);
1576 ret
= defaulted_query (ctlstr
, '\0', args
);
1581 /* A helper for parse_escape that converts a host character to a
1582 target character. C is the host character. If conversion is
1583 possible, then the target character is stored in *TARGET_C and the
1584 function returns 1. Otherwise, the function returns 0. */
1587 host_char_to_target (struct gdbarch
*gdbarch
, int c
, int *target_c
)
1589 struct obstack host_data
;
1591 struct cleanup
*cleanups
;
1594 obstack_init (&host_data
);
1595 cleanups
= make_cleanup_obstack_free (&host_data
);
1597 convert_between_encodings (target_charset (gdbarch
), host_charset (),
1598 &the_char
, 1, 1, &host_data
, translit_none
);
1600 if (obstack_object_size (&host_data
) == 1)
1603 *target_c
= *(char *) obstack_base (&host_data
);
1606 do_cleanups (cleanups
);
1610 /* Parse a C escape sequence. STRING_PTR points to a variable
1611 containing a pointer to the string to parse. That pointer
1612 should point to the character after the \. That pointer
1613 is updated past the characters we use. The value of the
1614 escape sequence is returned.
1616 A negative value means the sequence \ newline was seen,
1617 which is supposed to be equivalent to nothing at all.
1619 If \ is followed by a null character, we return a negative
1620 value and leave the string pointer pointing at the null character.
1622 If \ is followed by 000, we return 0 and leave the string pointer
1623 after the zeros. A value of 0 does not mean end of string. */
1626 parse_escape (struct gdbarch
*gdbarch
, char **string_ptr
)
1628 int target_char
= -2; /* Initialize to avoid GCC warnings. */
1629 int c
= *(*string_ptr
)++;
1648 int i
= host_hex_value (c
);
1653 if (isdigit (c
) && c
!= '8' && c
!= '9')
1657 i
+= host_hex_value (c
);
1693 if (!host_char_to_target (gdbarch
, c
, &target_char
))
1694 error (_("The escape sequence `\\%c' is equivalent to plain `%c',"
1695 " which has no equivalent\nin the `%s' character set."),
1696 c
, c
, target_charset (gdbarch
));
1700 /* Print the character C on STREAM as part of the contents of a literal
1701 string whose delimiter is QUOTER. Note that this routine should only
1702 be call for printing things which are independent of the language
1703 of the program being debugged. */
1706 printchar (int c
, void (*do_fputs
) (const char *, struct ui_file
*),
1707 void (*do_fprintf
) (struct ui_file
*, const char *, ...)
1708 ATTRIBUTE_FPTR_PRINTF_2
, struct ui_file
*stream
, int quoter
)
1710 c
&= 0xFF; /* Avoid sign bit follies */
1712 if (c
< 0x20 || /* Low control chars */
1713 (c
>= 0x7F && c
< 0xA0) || /* DEL, High controls */
1714 (sevenbit_strings
&& c
>= 0x80))
1715 { /* high order bit set */
1719 do_fputs ("\\n", stream
);
1722 do_fputs ("\\b", stream
);
1725 do_fputs ("\\t", stream
);
1728 do_fputs ("\\f", stream
);
1731 do_fputs ("\\r", stream
);
1734 do_fputs ("\\e", stream
);
1737 do_fputs ("\\a", stream
);
1740 do_fprintf (stream
, "\\%.3o", (unsigned int) c
);
1746 if (c
== '\\' || c
== quoter
)
1747 do_fputs ("\\", stream
);
1748 do_fprintf (stream
, "%c", c
);
1752 /* Print the character C on STREAM as part of the contents of a
1753 literal string whose delimiter is QUOTER. Note that these routines
1754 should only be call for printing things which are independent of
1755 the language of the program being debugged. */
1758 fputstr_filtered (const char *str
, int quoter
, struct ui_file
*stream
)
1761 printchar (*str
++, fputs_filtered
, fprintf_filtered
, stream
, quoter
);
1765 fputstr_unfiltered (const char *str
, int quoter
, struct ui_file
*stream
)
1768 printchar (*str
++, fputs_unfiltered
, fprintf_unfiltered
, stream
, quoter
);
1772 fputstrn_filtered (const char *str
, int n
, int quoter
,
1773 struct ui_file
*stream
)
1777 for (i
= 0; i
< n
; i
++)
1778 printchar (str
[i
], fputs_filtered
, fprintf_filtered
, stream
, quoter
);
1782 fputstrn_unfiltered (const char *str
, int n
, int quoter
,
1783 struct ui_file
*stream
)
1787 for (i
= 0; i
< n
; i
++)
1788 printchar (str
[i
], fputs_unfiltered
, fprintf_unfiltered
, stream
, quoter
);
1792 /* Number of lines per page or UINT_MAX if paging is disabled. */
1793 static unsigned int lines_per_page
;
1795 show_lines_per_page (struct ui_file
*file
, int from_tty
,
1796 struct cmd_list_element
*c
, const char *value
)
1798 fprintf_filtered (file
,
1799 _("Number of lines gdb thinks are in a page is %s.\n"),
1803 /* Number of chars per line or UINT_MAX if line folding is disabled. */
1804 static unsigned int chars_per_line
;
1806 show_chars_per_line (struct ui_file
*file
, int from_tty
,
1807 struct cmd_list_element
*c
, const char *value
)
1809 fprintf_filtered (file
,
1810 _("Number of characters gdb thinks "
1811 "are in a line is %s.\n"),
1815 /* Current count of lines printed on this page, chars on this line. */
1816 static unsigned int lines_printed
, chars_printed
;
1818 /* Buffer and start column of buffered text, for doing smarter word-
1819 wrapping. When someone calls wrap_here(), we start buffering output
1820 that comes through fputs_filtered(). If we see a newline, we just
1821 spit it out and forget about the wrap_here(). If we see another
1822 wrap_here(), we spit it out and remember the newer one. If we see
1823 the end of the line, we spit out a newline, the indent, and then
1824 the buffered output. */
1826 /* Malloc'd buffer with chars_per_line+2 bytes. Contains characters which
1827 are waiting to be output (they have already been counted in chars_printed).
1828 When wrap_buffer[0] is null, the buffer is empty. */
1829 static char *wrap_buffer
;
1831 /* Pointer in wrap_buffer to the next character to fill. */
1832 static char *wrap_pointer
;
1834 /* String to indent by if the wrap occurs. Must not be NULL if wrap_column
1836 static char *wrap_indent
;
1838 /* Column number on the screen where wrap_buffer begins, or 0 if wrapping
1839 is not in effect. */
1840 static int wrap_column
;
1843 /* Inialize the number of lines per page and chars per line. */
1846 init_page_info (void)
1850 lines_per_page
= UINT_MAX
;
1851 chars_per_line
= UINT_MAX
;
1855 if (!tui_get_command_dimension (&chars_per_line
, &lines_per_page
))
1860 #if defined(__GO32__)
1861 rows
= ScreenRows ();
1862 cols
= ScreenCols ();
1863 lines_per_page
= rows
;
1864 chars_per_line
= cols
;
1866 /* Make sure Readline has initialized its terminal settings. */
1867 rl_reset_terminal (NULL
);
1869 /* Get the screen size from Readline. */
1870 rl_get_screen_size (&rows
, &cols
);
1871 lines_per_page
= rows
;
1872 chars_per_line
= cols
;
1874 /* Readline should have fetched the termcap entry for us. */
1875 if (tgetnum ("li") < 0 || getenv ("EMACS"))
1877 /* The number of lines per page is not mentioned in the
1878 terminal description. This probably means that paging is
1879 not useful (e.g. emacs shell window), so disable paging. */
1880 lines_per_page
= UINT_MAX
;
1883 /* FIXME: Get rid of this junk. */
1884 #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER)
1885 SIGWINCH_HANDLER (SIGWINCH
);
1888 /* If the output is not a terminal, don't paginate it. */
1889 if (!ui_file_isatty (gdb_stdout
))
1890 lines_per_page
= UINT_MAX
;
1898 /* Helper for make_cleanup_restore_page_info. */
1901 do_restore_page_info_cleanup (void *arg
)
1907 /* Provide cleanup for restoring the terminal size. */
1910 make_cleanup_restore_page_info (void)
1912 struct cleanup
*back_to
;
1914 back_to
= make_cleanup (do_restore_page_info_cleanup
, NULL
);
1915 make_cleanup_restore_uinteger (&lines_per_page
);
1916 make_cleanup_restore_uinteger (&chars_per_line
);
1921 /* Temporarily set BATCH_FLAG and the associated unlimited terminal size.
1922 Provide cleanup for restoring the original state. */
1925 set_batch_flag_and_make_cleanup_restore_page_info (void)
1927 struct cleanup
*back_to
= make_cleanup_restore_page_info ();
1929 make_cleanup_restore_integer (&batch_flag
);
1936 /* Set the screen size based on LINES_PER_PAGE and CHARS_PER_LINE. */
1939 set_screen_size (void)
1941 int rows
= lines_per_page
;
1942 int cols
= chars_per_line
;
1950 /* Update Readline's idea of the terminal size. */
1951 rl_set_screen_size (rows
, cols
);
1954 /* Reinitialize WRAP_BUFFER according to the current value of
1960 if (chars_per_line
== 0)
1965 wrap_buffer
= (char *) xmalloc (chars_per_line
+ 2);
1966 wrap_buffer
[0] = '\0';
1969 wrap_buffer
= (char *) xrealloc (wrap_buffer
, chars_per_line
+ 2);
1970 wrap_pointer
= wrap_buffer
; /* Start it at the beginning. */
1974 set_width_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
1981 set_height_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
1986 /* Wait, so the user can read what's on the screen. Prompt the user
1987 to continue by pressing RETURN. */
1990 prompt_for_continue (void)
1993 char cont_prompt
[120];
1995 if (annotation_level
> 1)
1996 printf_unfiltered (("\n\032\032pre-prompt-for-continue\n"));
1998 strcpy (cont_prompt
,
1999 "---Type <return> to continue, or q <return> to quit---");
2000 if (annotation_level
> 1)
2001 strcat (cont_prompt
, "\n\032\032prompt-for-continue\n");
2003 /* We must do this *before* we call gdb_readline, else it will eventually
2004 call us -- thinking that we're trying to print beyond the end of the
2006 reinitialize_more_filter ();
2009 /* On a real operating system, the user can quit with SIGINT.
2012 'q' is provided on all systems so users don't have to change habits
2013 from system to system, and because telling them what to do in
2014 the prompt is more user-friendly than expecting them to think of
2016 /* Call readline, not gdb_readline, because GO32 readline handles control-C
2017 whereas control-C to gdb_readline will cause the user to get dumped
2019 ignore
= gdb_readline_wrapper (cont_prompt
);
2021 if (annotation_level
> 1)
2022 printf_unfiltered (("\n\032\032post-prompt-for-continue\n"));
2028 while (*p
== ' ' || *p
== '\t')
2031 async_request_quit (0);
2036 /* Now we have to do this again, so that GDB will know that it doesn't
2037 need to save the ---Type <return>--- line at the top of the screen. */
2038 reinitialize_more_filter ();
2040 dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */
2043 /* Reinitialize filter; ie. tell it to reset to original values. */
2046 reinitialize_more_filter (void)
2052 /* Indicate that if the next sequence of characters overflows the line,
2053 a newline should be inserted here rather than when it hits the end.
2054 If INDENT is non-null, it is a string to be printed to indent the
2055 wrapped part on the next line. INDENT must remain accessible until
2056 the next call to wrap_here() or until a newline is printed through
2059 If the line is already overfull, we immediately print a newline and
2060 the indentation, and disable further wrapping.
2062 If we don't know the width of lines, but we know the page height,
2063 we must not wrap words, but should still keep track of newlines
2064 that were explicitly printed.
2066 INDENT should not contain tabs, as that will mess up the char count
2067 on the next line. FIXME.
2069 This routine is guaranteed to force out any output which has been
2070 squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be
2071 used to force out output from the wrap_buffer. */
2074 wrap_here (char *indent
)
2076 /* This should have been allocated, but be paranoid anyway. */
2078 internal_error (__FILE__
, __LINE__
,
2079 _("failed internal consistency check"));
2083 *wrap_pointer
= '\0';
2084 fputs_unfiltered (wrap_buffer
, gdb_stdout
);
2086 wrap_pointer
= wrap_buffer
;
2087 wrap_buffer
[0] = '\0';
2088 if (chars_per_line
== UINT_MAX
) /* No line overflow checking. */
2092 else if (chars_printed
>= chars_per_line
)
2094 puts_filtered ("\n");
2096 puts_filtered (indent
);
2101 wrap_column
= chars_printed
;
2105 wrap_indent
= indent
;
2109 /* Print input string to gdb_stdout, filtered, with wrap,
2110 arranging strings in columns of n chars. String can be
2111 right or left justified in the column. Never prints
2112 trailing spaces. String should never be longer than
2113 width. FIXME: this could be useful for the EXAMINE
2114 command, which currently doesn't tabulate very well. */
2117 puts_filtered_tabular (char *string
, int width
, int right
)
2123 gdb_assert (chars_per_line
> 0);
2124 if (chars_per_line
== UINT_MAX
)
2126 fputs_filtered (string
, gdb_stdout
);
2127 fputs_filtered ("\n", gdb_stdout
);
2131 if (((chars_printed
- 1) / width
+ 2) * width
>= chars_per_line
)
2132 fputs_filtered ("\n", gdb_stdout
);
2134 if (width
>= chars_per_line
)
2135 width
= chars_per_line
- 1;
2137 stringlen
= strlen (string
);
2139 if (chars_printed
> 0)
2140 spaces
= width
- (chars_printed
- 1) % width
- 1;
2142 spaces
+= width
- stringlen
;
2144 spacebuf
= alloca (spaces
+ 1);
2145 spacebuf
[spaces
] = '\0';
2147 spacebuf
[spaces
] = ' ';
2149 fputs_filtered (spacebuf
, gdb_stdout
);
2150 fputs_filtered (string
, gdb_stdout
);
2154 /* Ensure that whatever gets printed next, using the filtered output
2155 commands, starts at the beginning of the line. I.e. if there is
2156 any pending output for the current line, flush it and start a new
2157 line. Otherwise do nothing. */
2162 if (chars_printed
> 0)
2164 puts_filtered ("\n");
2169 /* Like fputs but if FILTER is true, pause after every screenful.
2171 Regardless of FILTER can wrap at points other than the final
2172 character of a line.
2174 Unlike fputs, fputs_maybe_filtered does not return a value.
2175 It is OK for LINEBUFFER to be NULL, in which case just don't print
2178 Note that a longjmp to top level may occur in this routine (only if
2179 FILTER is true) (since prompt_for_continue may do so) so this
2180 routine should not be called when cleanups are not in place. */
2183 fputs_maybe_filtered (const char *linebuffer
, struct ui_file
*stream
,
2186 const char *lineptr
;
2188 if (linebuffer
== 0)
2191 /* Don't do any filtering if it is disabled. */
2192 if (stream
!= gdb_stdout
2193 || !pagination_enabled
2195 || (lines_per_page
== UINT_MAX
&& chars_per_line
== UINT_MAX
)
2196 || top_level_interpreter () == NULL
2197 || ui_out_is_mi_like_p (interp_ui_out (top_level_interpreter ())))
2199 fputs_unfiltered (linebuffer
, stream
);
2203 /* Go through and output each character. Show line extension
2204 when this is necessary; prompt user for new page when this is
2207 lineptr
= linebuffer
;
2210 /* Possible new page. */
2211 if (filter
&& (lines_printed
>= lines_per_page
- 1))
2212 prompt_for_continue ();
2214 while (*lineptr
&& *lineptr
!= '\n')
2216 /* Print a single line. */
2217 if (*lineptr
== '\t')
2220 *wrap_pointer
++ = '\t';
2222 fputc_unfiltered ('\t', stream
);
2223 /* Shifting right by 3 produces the number of tab stops
2224 we have already passed, and then adding one and
2225 shifting left 3 advances to the next tab stop. */
2226 chars_printed
= ((chars_printed
>> 3) + 1) << 3;
2232 *wrap_pointer
++ = *lineptr
;
2234 fputc_unfiltered (*lineptr
, stream
);
2239 if (chars_printed
>= chars_per_line
)
2241 unsigned int save_chars
= chars_printed
;
2245 /* If we aren't actually wrapping, don't output newline --
2246 if chars_per_line is right, we probably just overflowed
2247 anyway; if it's wrong, let us keep going. */
2249 fputc_unfiltered ('\n', stream
);
2251 /* Possible new page. */
2252 if (lines_printed
>= lines_per_page
- 1)
2253 prompt_for_continue ();
2255 /* Now output indentation and wrapped string. */
2258 fputs_unfiltered (wrap_indent
, stream
);
2259 *wrap_pointer
= '\0'; /* Null-terminate saved stuff, */
2260 fputs_unfiltered (wrap_buffer
, stream
); /* and eject it. */
2261 /* FIXME, this strlen is what prevents wrap_indent from
2262 containing tabs. However, if we recurse to print it
2263 and count its chars, we risk trouble if wrap_indent is
2264 longer than (the user settable) chars_per_line.
2265 Note also that this can set chars_printed > chars_per_line
2266 if we are printing a long string. */
2267 chars_printed
= strlen (wrap_indent
)
2268 + (save_chars
- wrap_column
);
2269 wrap_pointer
= wrap_buffer
; /* Reset buffer */
2270 wrap_buffer
[0] = '\0';
2271 wrap_column
= 0; /* And disable fancy wrap */
2276 if (*lineptr
== '\n')
2279 wrap_here ((char *) 0); /* Spit out chars, cancel
2282 fputc_unfiltered ('\n', stream
);
2289 fputs_filtered (const char *linebuffer
, struct ui_file
*stream
)
2291 fputs_maybe_filtered (linebuffer
, stream
, 1);
2295 putchar_unfiltered (int c
)
2299 ui_file_write (gdb_stdout
, &buf
, 1);
2303 /* Write character C to gdb_stdout using GDB's paging mechanism and return C.
2304 May return nonlocally. */
2307 putchar_filtered (int c
)
2309 return fputc_filtered (c
, gdb_stdout
);
2313 fputc_unfiltered (int c
, struct ui_file
*stream
)
2317 ui_file_write (stream
, &buf
, 1);
2322 fputc_filtered (int c
, struct ui_file
*stream
)
2328 fputs_filtered (buf
, stream
);
2332 /* puts_debug is like fputs_unfiltered, except it prints special
2333 characters in printable fashion. */
2336 puts_debug (char *prefix
, char *string
, char *suffix
)
2340 /* Print prefix and suffix after each line. */
2341 static int new_line
= 1;
2342 static int return_p
= 0;
2343 static char *prev_prefix
= "";
2344 static char *prev_suffix
= "";
2346 if (*string
== '\n')
2349 /* If the prefix is changing, print the previous suffix, a new line,
2350 and the new prefix. */
2351 if ((return_p
|| (strcmp (prev_prefix
, prefix
) != 0)) && !new_line
)
2353 fputs_unfiltered (prev_suffix
, gdb_stdlog
);
2354 fputs_unfiltered ("\n", gdb_stdlog
);
2355 fputs_unfiltered (prefix
, gdb_stdlog
);
2358 /* Print prefix if we printed a newline during the previous call. */
2362 fputs_unfiltered (prefix
, gdb_stdlog
);
2365 prev_prefix
= prefix
;
2366 prev_suffix
= suffix
;
2368 /* Output characters in a printable format. */
2369 while ((ch
= *string
++) != '\0')
2375 fputc_unfiltered (ch
, gdb_stdlog
);
2378 fprintf_unfiltered (gdb_stdlog
, "\\x%02x", ch
& 0xff);
2382 fputs_unfiltered ("\\\\", gdb_stdlog
);
2385 fputs_unfiltered ("\\b", gdb_stdlog
);
2388 fputs_unfiltered ("\\f", gdb_stdlog
);
2392 fputs_unfiltered ("\\n", gdb_stdlog
);
2395 fputs_unfiltered ("\\r", gdb_stdlog
);
2398 fputs_unfiltered ("\\t", gdb_stdlog
);
2401 fputs_unfiltered ("\\v", gdb_stdlog
);
2405 return_p
= ch
== '\r';
2408 /* Print suffix if we printed a newline. */
2411 fputs_unfiltered (suffix
, gdb_stdlog
);
2412 fputs_unfiltered ("\n", gdb_stdlog
);
2417 /* Print a variable number of ARGS using format FORMAT. If this
2418 information is going to put the amount written (since the last call
2419 to REINITIALIZE_MORE_FILTER or the last page break) over the page size,
2420 call prompt_for_continue to get the users permision to continue.
2422 Unlike fprintf, this function does not return a value.
2424 We implement three variants, vfprintf (takes a vararg list and stream),
2425 fprintf (takes a stream to write on), and printf (the usual).
2427 Note also that a longjmp to top level may occur in this routine
2428 (since prompt_for_continue may do so) so this routine should not be
2429 called when cleanups are not in place. */
2432 vfprintf_maybe_filtered (struct ui_file
*stream
, const char *format
,
2433 va_list args
, int filter
)
2436 struct cleanup
*old_cleanups
;
2438 linebuffer
= xstrvprintf (format
, args
);
2439 old_cleanups
= make_cleanup (xfree
, linebuffer
);
2440 fputs_maybe_filtered (linebuffer
, stream
, filter
);
2441 do_cleanups (old_cleanups
);
2446 vfprintf_filtered (struct ui_file
*stream
, const char *format
, va_list args
)
2448 vfprintf_maybe_filtered (stream
, format
, args
, 1);
2452 vfprintf_unfiltered (struct ui_file
*stream
, const char *format
, va_list args
)
2455 struct cleanup
*old_cleanups
;
2457 linebuffer
= xstrvprintf (format
, args
);
2458 old_cleanups
= make_cleanup (xfree
, linebuffer
);
2459 if (debug_timestamp
&& stream
== gdb_stdlog
)
2465 gettimeofday (&tm
, NULL
);
2467 len
= strlen (linebuffer
);
2468 need_nl
= (len
> 0 && linebuffer
[len
- 1] != '\n');
2470 timestamp
= xstrprintf ("%ld:%ld %s%s",
2471 (long) tm
.tv_sec
, (long) tm
.tv_usec
,
2473 need_nl
? "\n": "");
2474 make_cleanup (xfree
, timestamp
);
2475 fputs_unfiltered (timestamp
, stream
);
2478 fputs_unfiltered (linebuffer
, stream
);
2479 do_cleanups (old_cleanups
);
2483 vprintf_filtered (const char *format
, va_list args
)
2485 vfprintf_maybe_filtered (gdb_stdout
, format
, args
, 1);
2489 vprintf_unfiltered (const char *format
, va_list args
)
2491 vfprintf_unfiltered (gdb_stdout
, format
, args
);
2495 fprintf_filtered (struct ui_file
*stream
, const char *format
, ...)
2499 va_start (args
, format
);
2500 vfprintf_filtered (stream
, format
, args
);
2505 fprintf_unfiltered (struct ui_file
*stream
, const char *format
, ...)
2509 va_start (args
, format
);
2510 vfprintf_unfiltered (stream
, format
, args
);
2514 /* Like fprintf_filtered, but prints its result indented.
2515 Called as fprintfi_filtered (spaces, stream, format, ...); */
2518 fprintfi_filtered (int spaces
, struct ui_file
*stream
, const char *format
,
2523 va_start (args
, format
);
2524 print_spaces_filtered (spaces
, stream
);
2526 vfprintf_filtered (stream
, format
, args
);
2532 printf_filtered (const char *format
, ...)
2536 va_start (args
, format
);
2537 vfprintf_filtered (gdb_stdout
, format
, args
);
2543 printf_unfiltered (const char *format
, ...)
2547 va_start (args
, format
);
2548 vfprintf_unfiltered (gdb_stdout
, format
, args
);
2552 /* Like printf_filtered, but prints it's result indented.
2553 Called as printfi_filtered (spaces, format, ...); */
2556 printfi_filtered (int spaces
, const char *format
, ...)
2560 va_start (args
, format
);
2561 print_spaces_filtered (spaces
, gdb_stdout
);
2562 vfprintf_filtered (gdb_stdout
, format
, args
);
2566 /* Easy -- but watch out!
2568 This routine is *not* a replacement for puts()! puts() appends a newline.
2569 This one doesn't, and had better not! */
2572 puts_filtered (const char *string
)
2574 fputs_filtered (string
, gdb_stdout
);
2578 puts_unfiltered (const char *string
)
2580 fputs_unfiltered (string
, gdb_stdout
);
2583 /* Return a pointer to N spaces and a null. The pointer is good
2584 until the next call to here. */
2589 static char *spaces
= 0;
2590 static int max_spaces
= -1;
2596 spaces
= (char *) xmalloc (n
+ 1);
2597 for (t
= spaces
+ n
; t
!= spaces
;)
2603 return spaces
+ max_spaces
- n
;
2606 /* Print N spaces. */
2608 print_spaces_filtered (int n
, struct ui_file
*stream
)
2610 fputs_filtered (n_spaces (n
), stream
);
2613 /* C++/ObjC demangler stuff. */
2615 /* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language
2616 LANG, using demangling args ARG_MODE, and print it filtered to STREAM.
2617 If the name is not mangled, or the language for the name is unknown, or
2618 demangling is off, the name is printed in its "raw" form. */
2621 fprintf_symbol_filtered (struct ui_file
*stream
, char *name
,
2622 enum language lang
, int arg_mode
)
2628 /* If user wants to see raw output, no problem. */
2631 fputs_filtered (name
, stream
);
2635 demangled
= language_demangle (language_def (lang
), name
, arg_mode
);
2636 fputs_filtered (demangled
? demangled
: name
, stream
);
2637 if (demangled
!= NULL
)
2645 /* Do a strcmp() type operation on STRING1 and STRING2, ignoring any
2646 differences in whitespace. Returns 0 if they match, non-zero if they
2647 don't (slightly different than strcmp()'s range of return values).
2649 As an extra hack, string1=="FOO(ARGS)" matches string2=="FOO".
2650 This "feature" is useful when searching for matching C++ function names
2651 (such as if the user types 'break FOO', where FOO is a mangled C++
2655 strcmp_iw (const char *string1
, const char *string2
)
2657 while ((*string1
!= '\0') && (*string2
!= '\0'))
2659 while (isspace (*string1
))
2663 while (isspace (*string2
))
2667 if (case_sensitivity
== case_sensitive_on
&& *string1
!= *string2
)
2669 if (case_sensitivity
== case_sensitive_off
2670 && (tolower ((unsigned char) *string1
)
2671 != tolower ((unsigned char) *string2
)))
2673 if (*string1
!= '\0')
2679 return (*string1
!= '\0' && *string1
!= '(') || (*string2
!= '\0');
2682 /* This is like strcmp except that it ignores whitespace and treats
2683 '(' as the first non-NULL character in terms of ordering. Like
2684 strcmp (and unlike strcmp_iw), it returns negative if STRING1 <
2685 STRING2, 0 if STRING2 = STRING2, and positive if STRING1 > STRING2
2686 according to that ordering.
2688 If a list is sorted according to this function and if you want to
2689 find names in the list that match some fixed NAME according to
2690 strcmp_iw(LIST_ELT, NAME), then the place to start looking is right
2691 where this function would put NAME.
2693 This function must be neutral to the CASE_SENSITIVITY setting as the user
2694 may choose it during later lookup. Therefore this function always sorts
2695 primarily case-insensitively and secondarily case-sensitively.
2697 Here are some examples of why using strcmp to sort is a bad idea:
2701 Say your partial symtab contains: "foo<char *>", "goo". Then, if
2702 we try to do a search for "foo<char*>", strcmp will locate this
2703 after "foo<char *>" and before "goo". Then lookup_partial_symbol
2704 will start looking at strings beginning with "goo", and will never
2705 see the correct match of "foo<char *>".
2707 Parenthesis example:
2709 In practice, this is less like to be an issue, but I'll give it a
2710 shot. Let's assume that '$' is a legitimate character to occur in
2711 symbols. (Which may well even be the case on some systems.) Then
2712 say that the partial symbol table contains "foo$" and "foo(int)".
2713 strcmp will put them in this order, since '$' < '('. Now, if the
2714 user searches for "foo", then strcmp will sort "foo" before "foo$".
2715 Then lookup_partial_symbol will notice that strcmp_iw("foo$",
2716 "foo") is false, so it won't proceed to the actual match of
2717 "foo(int)" with "foo". */
2720 strcmp_iw_ordered (const char *string1
, const char *string2
)
2722 const char *saved_string1
= string1
, *saved_string2
= string2
;
2723 enum case_sensitivity case_pass
= case_sensitive_off
;
2727 /* C1 and C2 are valid only if *string1 != '\0' && *string2 != '\0'.
2728 Provide stub characters if we are already at the end of one of the
2730 char c1
= 'X', c2
= 'X';
2732 while (*string1
!= '\0' && *string2
!= '\0')
2734 while (isspace (*string1
))
2736 while (isspace (*string2
))
2741 case case_sensitive_off
:
2742 c1
= tolower ((unsigned char) *string1
);
2743 c2
= tolower ((unsigned char) *string2
);
2745 case case_sensitive_on
:
2753 if (*string1
!= '\0')
2762 /* Characters are non-equal unless they're both '\0'; we want to
2763 make sure we get the comparison right according to our
2764 comparison in the cases where one of them is '\0' or '('. */
2766 if (*string2
== '\0')
2771 if (*string2
== '\0')
2776 if (*string2
== '\0' || *string2
== '(')
2785 if (case_pass
== case_sensitive_on
)
2788 /* Otherwise the strings were equal in case insensitive way, make
2789 a more fine grained comparison in a case sensitive way. */
2791 case_pass
= case_sensitive_on
;
2792 string1
= saved_string1
;
2793 string2
= saved_string2
;
2797 /* A simple comparison function with opposite semantics to strcmp. */
2800 streq (const char *lhs
, const char *rhs
)
2802 return !strcmp (lhs
, rhs
);
2808 ** Answer whether string_to_compare is a full or partial match to
2809 ** template_string. The partial match must be in sequence starting
2813 subset_compare (char *string_to_compare
, char *template_string
)
2817 if (template_string
!= (char *) NULL
&& string_to_compare
!= (char *) NULL
2818 && strlen (string_to_compare
) <= strlen (template_string
))
2821 (template_string
, string_to_compare
, strlen (string_to_compare
)) == 0);
2828 pagination_on_command (char *arg
, int from_tty
)
2830 pagination_enabled
= 1;
2834 pagination_off_command (char *arg
, int from_tty
)
2836 pagination_enabled
= 0;
2840 show_debug_timestamp (struct ui_file
*file
, int from_tty
,
2841 struct cmd_list_element
*c
, const char *value
)
2843 fprintf_filtered (file
, _("Timestamping debugging messages is %s.\n"),
2849 initialize_utils (void)
2851 add_setshow_uinteger_cmd ("width", class_support
, &chars_per_line
, _("\
2852 Set number of characters gdb thinks are in a line."), _("\
2853 Show number of characters gdb thinks are in a line."), NULL
,
2855 show_chars_per_line
,
2856 &setlist
, &showlist
);
2858 add_setshow_uinteger_cmd ("height", class_support
, &lines_per_page
, _("\
2859 Set number of lines gdb thinks are in a page."), _("\
2860 Show number of lines gdb thinks are in a page."), NULL
,
2862 show_lines_per_page
,
2863 &setlist
, &showlist
);
2867 add_setshow_boolean_cmd ("demangle", class_support
, &demangle
, _("\
2868 Set demangling of encoded C++/ObjC names when displaying symbols."), _("\
2869 Show demangling of encoded C++/ObjC names when displaying symbols."), NULL
,
2872 &setprintlist
, &showprintlist
);
2874 add_setshow_boolean_cmd ("pagination", class_support
,
2875 &pagination_enabled
, _("\
2876 Set state of pagination."), _("\
2877 Show state of pagination."), NULL
,
2879 show_pagination_enabled
,
2880 &setlist
, &showlist
);
2884 add_com ("am", class_support
, pagination_on_command
,
2885 _("Enable pagination"));
2886 add_com ("sm", class_support
, pagination_off_command
,
2887 _("Disable pagination"));
2890 add_setshow_boolean_cmd ("sevenbit-strings", class_support
,
2891 &sevenbit_strings
, _("\
2892 Set printing of 8-bit characters in strings as \\nnn."), _("\
2893 Show printing of 8-bit characters in strings as \\nnn."), NULL
,
2895 show_sevenbit_strings
,
2896 &setprintlist
, &showprintlist
);
2898 add_setshow_boolean_cmd ("asm-demangle", class_support
, &asm_demangle
, _("\
2899 Set demangling of C++/ObjC names in disassembly listings."), _("\
2900 Show demangling of C++/ObjC names in disassembly listings."), NULL
,
2903 &setprintlist
, &showprintlist
);
2905 add_setshow_boolean_cmd ("timestamp", class_maintenance
,
2906 &debug_timestamp
, _("\
2907 Set timestamping of debugging messages."), _("\
2908 Show timestamping of debugging messages."), _("\
2909 When set, debugging messages will be marked with seconds and microseconds."),
2911 show_debug_timestamp
,
2912 &setdebuglist
, &showdebuglist
);
2915 /* Machine specific function to handle SIGWINCH signal. */
2917 #ifdef SIGWINCH_HANDLER_BODY
2918 SIGWINCH_HANDLER_BODY
2920 /* Print routines to handle variable size regs, etc. */
2921 /* Temporary storage using circular buffer. */
2927 static char buf
[NUMCELLS
][CELLSIZE
];
2928 static int cell
= 0;
2930 if (++cell
>= NUMCELLS
)
2936 paddress (struct gdbarch
*gdbarch
, CORE_ADDR addr
)
2938 /* Truncate address to the size of a target address, avoiding shifts
2939 larger or equal than the width of a CORE_ADDR. The local
2940 variable ADDR_BIT stops the compiler reporting a shift overflow
2941 when it won't occur. */
2942 /* NOTE: This assumes that the significant address information is
2943 kept in the least significant bits of ADDR - the upper bits were
2944 either zero or sign extended. Should gdbarch_address_to_pointer or
2945 some ADDRESS_TO_PRINTABLE() be used to do the conversion? */
2947 int addr_bit
= gdbarch_addr_bit (gdbarch
);
2949 if (addr_bit
< (sizeof (CORE_ADDR
) * HOST_CHAR_BIT
))
2950 addr
&= ((CORE_ADDR
) 1 << addr_bit
) - 1;
2951 return hex_string (addr
);
2954 /* This function is described in "defs.h". */
2957 print_core_address (struct gdbarch
*gdbarch
, CORE_ADDR address
)
2959 int addr_bit
= gdbarch_addr_bit (gdbarch
);
2961 if (addr_bit
< (sizeof (CORE_ADDR
) * HOST_CHAR_BIT
))
2962 address
&= ((CORE_ADDR
) 1 << addr_bit
) - 1;
2964 /* FIXME: cagney/2002-05-03: Need local_address_string() function
2965 that returns the language localized string formatted to a width
2966 based on gdbarch_addr_bit. */
2968 return hex_string_custom (address
, 8);
2970 return hex_string_custom (address
, 16);
2973 /* Callback hash_f for htab_create_alloc or htab_create_alloc_ex. */
2976 core_addr_hash (const void *ap
)
2978 const CORE_ADDR
*addrp
= ap
;
2983 /* Callback eq_f for htab_create_alloc or htab_create_alloc_ex. */
2986 core_addr_eq (const void *ap
, const void *bp
)
2988 const CORE_ADDR
*addr_ap
= ap
;
2989 const CORE_ADDR
*addr_bp
= bp
;
2991 return *addr_ap
== *addr_bp
;
2995 decimal2str (char *sign
, ULONGEST addr
, int width
)
2997 /* Steal code from valprint.c:print_decimal(). Should this worry
2998 about the real size of addr as the above does? */
2999 unsigned long temp
[3];
3000 char *str
= get_cell ();
3005 temp
[i
] = addr
% (1000 * 1000 * 1000);
3006 addr
/= (1000 * 1000 * 1000);
3010 while (addr
!= 0 && i
< (sizeof (temp
) / sizeof (temp
[0])));
3019 xsnprintf (str
, CELLSIZE
, "%s%0*lu", sign
, width
, temp
[0]);
3022 xsnprintf (str
, CELLSIZE
, "%s%0*lu%09lu", sign
, width
,
3026 xsnprintf (str
, CELLSIZE
, "%s%0*lu%09lu%09lu", sign
, width
,
3027 temp
[2], temp
[1], temp
[0]);
3030 internal_error (__FILE__
, __LINE__
,
3031 _("failed internal consistency check"));
3038 octal2str (ULONGEST addr
, int width
)
3040 unsigned long temp
[3];
3041 char *str
= get_cell ();
3046 temp
[i
] = addr
% (0100000 * 0100000);
3047 addr
/= (0100000 * 0100000);
3051 while (addr
!= 0 && i
< (sizeof (temp
) / sizeof (temp
[0])));
3061 xsnprintf (str
, CELLSIZE
, "%*o", width
, 0);
3063 xsnprintf (str
, CELLSIZE
, "0%0*lo", width
, temp
[0]);
3066 xsnprintf (str
, CELLSIZE
, "0%0*lo%010lo", width
, temp
[1], temp
[0]);
3069 xsnprintf (str
, CELLSIZE
, "0%0*lo%010lo%010lo", width
,
3070 temp
[2], temp
[1], temp
[0]);
3073 internal_error (__FILE__
, __LINE__
,
3074 _("failed internal consistency check"));
3081 pulongest (ULONGEST u
)
3083 return decimal2str ("", u
, 0);
3087 plongest (LONGEST l
)
3090 return decimal2str ("-", -l
, 0);
3092 return decimal2str ("", l
, 0);
3095 /* Eliminate warning from compiler on 32-bit systems. */
3096 static int thirty_two
= 32;
3099 phex (ULONGEST l
, int sizeof_l
)
3107 xsnprintf (str
, CELLSIZE
, "%08lx%08lx",
3108 (unsigned long) (l
>> thirty_two
),
3109 (unsigned long) (l
& 0xffffffff));
3113 xsnprintf (str
, CELLSIZE
, "%08lx", (unsigned long) l
);
3117 xsnprintf (str
, CELLSIZE
, "%04x", (unsigned short) (l
& 0xffff));
3120 str
= phex (l
, sizeof (l
));
3128 phex_nz (ULONGEST l
, int sizeof_l
)
3136 unsigned long high
= (unsigned long) (l
>> thirty_two
);
3140 xsnprintf (str
, CELLSIZE
, "%lx",
3141 (unsigned long) (l
& 0xffffffff));
3143 xsnprintf (str
, CELLSIZE
, "%lx%08lx", high
,
3144 (unsigned long) (l
& 0xffffffff));
3149 xsnprintf (str
, CELLSIZE
, "%lx", (unsigned long) l
);
3153 xsnprintf (str
, CELLSIZE
, "%x", (unsigned short) (l
& 0xffff));
3156 str
= phex_nz (l
, sizeof (l
));
3163 /* Converts a LONGEST to a C-format hexadecimal literal and stores it
3164 in a static string. Returns a pointer to this string. */
3166 hex_string (LONGEST num
)
3168 char *result
= get_cell ();
3170 xsnprintf (result
, CELLSIZE
, "0x%s", phex_nz (num
, sizeof (num
)));
3174 /* Converts a LONGEST number to a C-format hexadecimal literal and
3175 stores it in a static string. Returns a pointer to this string
3176 that is valid until the next call. The number is padded on the
3177 left with 0s to at least WIDTH characters. */
3179 hex_string_custom (LONGEST num
, int width
)
3181 char *result
= get_cell ();
3182 char *result_end
= result
+ CELLSIZE
- 1;
3183 const char *hex
= phex_nz (num
, sizeof (num
));
3184 int hex_len
= strlen (hex
);
3186 if (hex_len
> width
)
3188 if (width
+ 2 >= CELLSIZE
)
3189 internal_error (__FILE__
, __LINE__
, _("\
3190 hex_string_custom: insufficient space to store result"));
3192 strcpy (result_end
- width
- 2, "0x");
3193 memset (result_end
- width
, '0', width
);
3194 strcpy (result_end
- hex_len
, hex
);
3195 return result_end
- width
- 2;
3198 /* Convert VAL to a numeral in the given radix. For
3199 * radix 10, IS_SIGNED may be true, indicating a signed quantity;
3200 * otherwise VAL is interpreted as unsigned. If WIDTH is supplied,
3201 * it is the minimum width (0-padded if needed). USE_C_FORMAT means
3202 * to use C format in all cases. If it is false, then 'x'
3203 * and 'o' formats do not include a prefix (0x or leading 0). */
3206 int_string (LONGEST val
, int radix
, int is_signed
, int width
,
3216 result
= hex_string (val
);
3218 result
= hex_string_custom (val
, width
);
3225 if (is_signed
&& val
< 0)
3226 return decimal2str ("-", -val
, width
);
3228 return decimal2str ("", val
, width
);
3232 char *result
= octal2str (val
, width
);
3234 if (use_c_format
|| val
== 0)
3240 internal_error (__FILE__
, __LINE__
,
3241 _("failed internal consistency check"));
3245 /* Convert a CORE_ADDR into a string. */
3247 core_addr_to_string (const CORE_ADDR addr
)
3249 char *str
= get_cell ();
3252 strcat (str
, phex (addr
, sizeof (addr
)));
3257 core_addr_to_string_nz (const CORE_ADDR addr
)
3259 char *str
= get_cell ();
3262 strcat (str
, phex_nz (addr
, sizeof (addr
)));
3266 /* Convert a string back into a CORE_ADDR. */
3268 string_to_core_addr (const char *my_string
)
3272 if (my_string
[0] == '0' && tolower (my_string
[1]) == 'x')
3274 /* Assume that it is in hex. */
3277 for (i
= 2; my_string
[i
] != '\0'; i
++)
3279 if (isdigit (my_string
[i
]))
3280 addr
= (my_string
[i
] - '0') + (addr
* 16);
3281 else if (isxdigit (my_string
[i
]))
3282 addr
= (tolower (my_string
[i
]) - 'a' + 0xa) + (addr
* 16);
3284 error (_("invalid hex \"%s\""), my_string
);
3289 /* Assume that it is in decimal. */
3292 for (i
= 0; my_string
[i
] != '\0'; i
++)
3294 if (isdigit (my_string
[i
]))
3295 addr
= (my_string
[i
] - '0') + (addr
* 10);
3297 error (_("invalid decimal \"%s\""), my_string
);
3305 host_address_to_string (const void *addr
)
3307 char *str
= get_cell ();
3309 xsnprintf (str
, CELLSIZE
, "0x%s", phex_nz ((uintptr_t) addr
, sizeof (addr
)));
3314 gdb_realpath (const char *filename
)
3316 /* Method 1: The system has a compile time upper bound on a filename
3317 path. Use that and realpath() to canonicalize the name. This is
3318 the most common case. Note that, if there isn't a compile time
3319 upper bound, you want to avoid realpath() at all costs. */
3320 #if defined(HAVE_REALPATH)
3322 # if defined (PATH_MAX)
3324 # define USE_REALPATH
3325 # elif defined (MAXPATHLEN)
3326 char buf
[MAXPATHLEN
];
3327 # define USE_REALPATH
3329 # if defined (USE_REALPATH)
3330 const char *rp
= realpath (filename
, buf
);
3334 return xstrdup (rp
);
3337 #endif /* HAVE_REALPATH */
3339 /* Method 2: The host system (i.e., GNU) has the function
3340 canonicalize_file_name() which malloc's a chunk of memory and
3341 returns that, use that. */
3342 #if defined(HAVE_CANONICALIZE_FILE_NAME)
3344 char *rp
= canonicalize_file_name (filename
);
3347 return xstrdup (filename
);
3353 /* FIXME: cagney/2002-11-13:
3355 Method 2a: Use realpath() with a NULL buffer. Some systems, due
3356 to the problems described in method 3, have modified their
3357 realpath() implementation so that it will allocate a buffer when
3358 NULL is passed in. Before this can be used, though, some sort of
3359 configure time test would need to be added. Otherwize the code
3360 will likely core dump. */
3362 /* Method 3: Now we're getting desperate! The system doesn't have a
3363 compile time buffer size and no alternative function. Query the
3364 OS, using pathconf(), for the buffer limit. Care is needed
3365 though, some systems do not limit PATH_MAX (return -1 for
3366 pathconf()) making it impossible to pass a correctly sized buffer
3367 to realpath() (it could always overflow). On those systems, we
3369 #if defined (HAVE_REALPATH) && defined (HAVE_UNISTD_H) && defined(HAVE_ALLOCA)
3371 /* Find out the max path size. */
3372 long path_max
= pathconf ("/", _PC_PATH_MAX
);
3376 /* PATH_MAX is bounded. */
3377 char *buf
= alloca (path_max
);
3378 char *rp
= realpath (filename
, buf
);
3380 return xstrdup (rp
? rp
: filename
);
3385 /* This system is a lost cause, just dup the buffer. */
3386 return xstrdup (filename
);
3389 /* Return a copy of FILENAME, with its directory prefix canonicalized
3393 xfullpath (const char *filename
)
3395 const char *base_name
= lbasename (filename
);
3400 /* Extract the basename of filename, and return immediately
3401 a copy of filename if it does not contain any directory prefix. */
3402 if (base_name
== filename
)
3403 return xstrdup (filename
);
3405 dir_name
= alloca ((size_t) (base_name
- filename
+ 2));
3406 /* Allocate enough space to store the dir_name + plus one extra
3407 character sometimes needed under Windows (see below), and
3408 then the closing \000 character. */
3409 strncpy (dir_name
, filename
, base_name
- filename
);
3410 dir_name
[base_name
- filename
] = '\000';
3412 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
3413 /* We need to be careful when filename is of the form 'd:foo', which
3414 is equivalent of d:./foo, which is totally different from d:/foo. */
3415 if (strlen (dir_name
) == 2 && isalpha (dir_name
[0]) && dir_name
[1] == ':')
3418 dir_name
[3] = '\000';
3422 /* Canonicalize the directory prefix, and build the resulting
3423 filename. If the dirname realpath already contains an ending
3424 directory separator, avoid doubling it. */
3425 real_path
= gdb_realpath (dir_name
);
3426 if (IS_DIR_SEPARATOR (real_path
[strlen (real_path
) - 1]))
3427 result
= concat (real_path
, base_name
, (char *) NULL
);
3429 result
= concat (real_path
, SLASH_STRING
, base_name
, (char *) NULL
);
3436 /* This is the 32-bit CRC function used by the GNU separate debug
3437 facility. An executable may contain a section named
3438 .gnu_debuglink, which holds the name of a separate executable file
3439 containing its debug info, and a checksum of that file's contents,
3440 computed using this function. */
3442 gnu_debuglink_crc32 (unsigned long crc
, unsigned char *buf
, size_t len
)
3444 static const unsigned int crc32_table
[256] = {
3445 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419,
3446 0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4,
3447 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07,
3448 0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,
3449 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856,
3450 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
3451 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4,
3452 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
3453 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3,
3454 0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a,
3455 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599,
3456 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
3457 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190,
3458 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f,
3459 0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e,
3460 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
3461 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed,
3462 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
3463 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3,
3464 0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2,
3465 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a,
3466 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5,
3467 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010,
3468 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
3469 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17,
3470 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6,
3471 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615,
3472 0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,
3473 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344,
3474 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
3475 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a,
3476 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
3477 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1,
3478 0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c,
3479 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef,
3480 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
3481 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe,
3482 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31,
3483 0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c,
3484 0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
3485 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b,
3486 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
3487 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1,
3488 0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,
3489 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278,
3490 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7,
3491 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66,
3492 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
3493 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605,
3494 0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8,
3495 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b,
3500 crc
= ~crc
& 0xffffffff;
3501 for (end
= buf
+ len
; buf
< end
; ++buf
)
3502 crc
= crc32_table
[(crc
^ *buf
) & 0xff] ^ (crc
>> 8);
3503 return ~crc
& 0xffffffff;
3507 align_up (ULONGEST v
, int n
)
3509 /* Check that N is really a power of two. */
3510 gdb_assert (n
&& (n
& (n
-1)) == 0);
3511 return (v
+ n
- 1) & -n
;
3515 align_down (ULONGEST v
, int n
)
3517 /* Check that N is really a power of two. */
3518 gdb_assert (n
&& (n
& (n
-1)) == 0);
3522 /* Allocation function for the libiberty hash table which uses an
3523 obstack. The obstack is passed as DATA. */
3526 hashtab_obstack_allocate (void *data
, size_t size
, size_t count
)
3528 unsigned int total
= size
* count
;
3529 void *ptr
= obstack_alloc ((struct obstack
*) data
, total
);
3531 memset (ptr
, 0, total
);
3535 /* Trivial deallocation function for the libiberty splay tree and hash
3536 table - don't deallocate anything. Rely on later deletion of the
3537 obstack. DATA will be the obstack, although it is not needed
3541 dummy_obstack_deallocate (void *object
, void *data
)
3546 /* The bit offset of the highest byte in a ULONGEST, for overflow
3549 #define HIGH_BYTE_POSN ((sizeof (ULONGEST) - 1) * HOST_CHAR_BIT)
3551 /* True (non-zero) iff DIGIT is a valid digit in radix BASE,
3552 where 2 <= BASE <= 36. */
3555 is_digit_in_base (unsigned char digit
, int base
)
3557 if (!isalnum (digit
))
3560 return (isdigit (digit
) && digit
< base
+ '0');
3562 return (isdigit (digit
) || tolower (digit
) < base
- 10 + 'a');
3566 digit_to_int (unsigned char c
)
3571 return tolower (c
) - 'a' + 10;
3574 /* As for strtoul, but for ULONGEST results. */
3577 strtoulst (const char *num
, const char **trailer
, int base
)
3579 unsigned int high_part
;
3584 /* Skip leading whitespace. */
3585 while (isspace (num
[i
]))
3588 /* Handle prefixes. */
3591 else if (num
[i
] == '-')
3597 if (base
== 0 || base
== 16)
3599 if (num
[i
] == '0' && (num
[i
+ 1] == 'x' || num
[i
+ 1] == 'X'))
3607 if (base
== 0 && num
[i
] == '0')
3613 if (base
< 2 || base
> 36)
3619 result
= high_part
= 0;
3620 for (; is_digit_in_base (num
[i
], base
); i
+= 1)
3622 result
= result
* base
+ digit_to_int (num
[i
]);
3623 high_part
= high_part
* base
+ (unsigned int) (result
>> HIGH_BYTE_POSN
);
3624 result
&= ((ULONGEST
) 1 << HIGH_BYTE_POSN
) - 1;
3625 if (high_part
> 0xff)
3628 result
= ~ (ULONGEST
) 0;
3635 if (trailer
!= NULL
)
3638 result
= result
+ ((ULONGEST
) high_part
<< HIGH_BYTE_POSN
);
3645 /* Simple, portable version of dirname that does not modify its
3649 ldirname (const char *filename
)
3651 const char *base
= lbasename (filename
);
3654 while (base
> filename
&& IS_DIR_SEPARATOR (base
[-1]))
3657 if (base
== filename
)
3660 dirname
= xmalloc (base
- filename
+ 2);
3661 memcpy (dirname
, filename
, base
- filename
);
3663 /* On DOS based file systems, convert "d:foo" to "d:.", so that we
3664 create "d:./bar" later instead of the (different) "d:/bar". */
3665 if (base
- filename
== 2 && IS_ABSOLUTE_PATH (base
)
3666 && !IS_DIR_SEPARATOR (filename
[0]))
3667 dirname
[base
++ - filename
] = '.';
3669 dirname
[base
- filename
] = '\0';
3673 /* Call libiberty's buildargv, and return the result.
3674 If buildargv fails due to out-of-memory, call nomem.
3675 Therefore, the returned value is guaranteed to be non-NULL,
3676 unless the parameter itself is NULL. */
3679 gdb_buildargv (const char *s
)
3681 char **argv
= buildargv (s
);
3683 if (s
!= NULL
&& argv
== NULL
)
3689 compare_positive_ints (const void *ap
, const void *bp
)
3691 /* Because we know we're comparing two ints which are positive,
3692 there's no danger of overflow here. */
3693 return * (int *) ap
- * (int *) bp
;
3696 #define AMBIGUOUS_MESS1 ".\nMatching formats:"
3697 #define AMBIGUOUS_MESS2 \
3698 ".\nUse \"set gnutarget format-name\" to specify the format."
3701 gdb_bfd_errmsg (bfd_error_type error_tag
, char **matching
)
3707 /* Check if errmsg just need simple return. */
3708 if (error_tag
!= bfd_error_file_ambiguously_recognized
|| matching
== NULL
)
3709 return bfd_errmsg (error_tag
);
3711 ret_len
= strlen (bfd_errmsg (error_tag
)) + strlen (AMBIGUOUS_MESS1
)
3712 + strlen (AMBIGUOUS_MESS2
);
3713 for (p
= matching
; *p
; p
++)
3714 ret_len
+= strlen (*p
) + 1;
3715 ret
= xmalloc (ret_len
+ 1);
3717 make_cleanup (xfree
, ret
);
3719 strcpy (retp
, bfd_errmsg (error_tag
));
3720 retp
+= strlen (retp
);
3722 strcpy (retp
, AMBIGUOUS_MESS1
);
3723 retp
+= strlen (retp
);
3725 for (p
= matching
; *p
; p
++)
3727 sprintf (retp
, " %s", *p
);
3728 retp
+= strlen (retp
);
3732 strcpy (retp
, AMBIGUOUS_MESS2
);
3737 /* Return ARGS parsed as a valid pid, or throw an error. */
3740 parse_pid_to_attach (char *args
)
3746 error_no_arg (_("process-id to attach"));
3749 pid
= strtoul (args
, &dummy
, 0);
3750 /* Some targets don't set errno on errors, grrr! */
3751 if ((pid
== 0 && dummy
== args
) || dummy
!= &args
[strlen (args
)])
3752 error (_("Illegal process-id: %s."), args
);
3757 /* Helper for make_bpstat_clear_actions_cleanup. */
3760 do_bpstat_clear_actions_cleanup (void *unused
)
3762 bpstat_clear_actions ();
3765 /* Call bpstat_clear_actions for the case an exception is throw. You should
3766 discard_cleanups if no exception is caught. */
3769 make_bpstat_clear_actions_cleanup (void)
3771 return make_cleanup (do_bpstat_clear_actions_cleanup
, NULL
);
3774 /* Check for GCC >= 4.x according to the symtab->producer string. Return minor
3775 version (x) of 4.x in such case. If it is not GCC or it is GCC older than
3776 4.x return -1. If it is GCC 5.x or higher return INT_MAX. */
3779 producer_is_gcc_ge_4 (const char *producer
)
3784 if (producer
== NULL
)
3786 /* For unknown compilers expect their behavior is not compliant. For GCC
3787 this case can also happen for -gdwarf-4 type units supported since
3793 /* Skip any identifier after "GNU " - such as "C++" or "Java". */
3795 if (strncmp (producer
, "GNU ", strlen ("GNU ")) != 0)
3797 /* For non-GCC compilers expect their behavior is not compliant. */
3801 cs
= &producer
[strlen ("GNU ")];
3802 while (*cs
&& !isdigit (*cs
))
3804 if (sscanf (cs
, "%d.%d", &major
, &minor
) != 2)
3806 /* Not recognized as GCC. */
3818 /* Provide a prototype to silence -Wmissing-prototypes. */
3819 extern initialize_file_ftype _initialize_utils
;
3822 _initialize_utils (void)
3824 add_internal_problem_command (&internal_error_problem
);
3825 add_internal_problem_command (&internal_warning_problem
);