1 /* General utility routines for GDB, the GNU debugger.
3 Copyright (C) 1986-2014 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
21 #include "dyn-string.h"
22 #include "gdb_assert.h"
26 #include "event-top.h"
27 #include "exceptions.h"
28 #include "gdbthread.h"
31 #ifdef HAVE_SYS_RESOURCE_H
32 #include <sys/resource.h>
33 #endif /* HAVE_SYS_RESOURCE_H */
36 #include "tui/tui.h" /* For tui_get_command_dimension. */
44 #include "timeval-utils.h"
49 #include "gdb-demangle.h"
50 #include "expression.h"
54 #include "filenames.h"
56 #include "gdb_obstack.h"
62 #include "inferior.h" /* for signed_pointer_to_address */
64 #include "gdb_curses.h"
66 #include "readline/readline.h"
71 #include "gdb_usleep.h"
73 #include "gdb_regex.h"
76 extern PTR
malloc (); /* ARI: PTR */
78 #if !HAVE_DECL_REALLOC
79 extern PTR
realloc (); /* ARI: PTR */
85 void (*deprecated_error_begin_hook
) (void);
87 /* Prototypes for local functions */
89 static void vfprintf_maybe_filtered (struct ui_file
*, const char *,
90 va_list, int) ATTRIBUTE_PRINTF (2, 0);
92 static void fputs_maybe_filtered (const char *, struct ui_file
*, int);
94 static void prompt_for_continue (void);
96 static void set_screen_size (void);
97 static void set_width (void);
99 /* Time spent in prompt_for_continue in the currently executing command
100 waiting for user to respond.
101 Initialized in make_command_stats_cleanup.
102 Modified in prompt_for_continue and defaulted_query.
103 Used in report_command_stats. */
105 static struct timeval prompt_for_continue_wait_time
;
107 /* A flag indicating whether to timestamp debugging messages. */
109 static int debug_timestamp
= 0;
111 /* Nonzero if we have job control. */
115 /* Nonzero means quit immediately if Control-C is typed now, rather
116 than waiting until QUIT is executed. Be careful in setting this;
117 code which executes with immediate_quit set has to be very careful
118 about being able to deal with being interrupted at any time. It is
119 almost always better to use QUIT; the only exception I can think of
120 is being able to quit out of a system call (using EINTR loses if
121 the SIGINT happens between the previous QUIT and the system call).
122 To immediately quit in the case in which a SIGINT happens between
123 the previous QUIT and setting immediate_quit (desirable anytime we
124 expect to block), call QUIT after setting immediate_quit. */
128 /* Nonzero means that strings with character values >0x7F should be printed
129 as octal escapes. Zero means just print the value (e.g. it's an
130 international character, and the terminal or window can cope.) */
132 int sevenbit_strings
= 0;
134 show_sevenbit_strings (struct ui_file
*file
, int from_tty
,
135 struct cmd_list_element
*c
, const char *value
)
137 fprintf_filtered (file
, _("Printing of 8-bit characters "
138 "in strings as \\nnn is %s.\n"),
142 /* String to be printed before warning messages, if any. */
144 char *warning_pre_print
= "\nwarning: ";
146 int pagination_enabled
= 1;
148 show_pagination_enabled (struct ui_file
*file
, int from_tty
,
149 struct cmd_list_element
*c
, const char *value
)
151 fprintf_filtered (file
, _("State of pagination is %s.\n"), value
);
155 /* Cleanup utilities.
157 These are not defined in cleanups.c (nor declared in cleanups.h)
158 because while they use the "cleanup API" they are not part of the
162 do_freeargv (void *arg
)
164 freeargv ((char **) arg
);
168 make_cleanup_freeargv (char **arg
)
170 return make_cleanup (do_freeargv
, arg
);
174 do_dyn_string_delete (void *arg
)
176 dyn_string_delete ((dyn_string_t
) arg
);
180 make_cleanup_dyn_string_delete (dyn_string_t arg
)
182 return make_cleanup (do_dyn_string_delete
, arg
);
186 do_bfd_close_cleanup (void *arg
)
192 make_cleanup_bfd_unref (bfd
*abfd
)
194 return make_cleanup (do_bfd_close_cleanup
, abfd
);
198 do_close_cleanup (void *arg
)
206 make_cleanup_close (int fd
)
208 int *saved_fd
= xmalloc (sizeof (fd
));
211 return make_cleanup_dtor (do_close_cleanup
, saved_fd
, xfree
);
214 /* Helper function which does the work for make_cleanup_fclose. */
217 do_fclose_cleanup (void *arg
)
224 /* Return a new cleanup that closes FILE. */
227 make_cleanup_fclose (FILE *file
)
229 return make_cleanup (do_fclose_cleanup
, file
);
232 /* Helper function which does the work for make_cleanup_obstack_free. */
235 do_obstack_free (void *arg
)
237 struct obstack
*ob
= arg
;
239 obstack_free (ob
, NULL
);
242 /* Return a new cleanup that frees OBSTACK. */
245 make_cleanup_obstack_free (struct obstack
*obstack
)
247 return make_cleanup (do_obstack_free
, obstack
);
251 do_ui_file_delete (void *arg
)
253 ui_file_delete (arg
);
257 make_cleanup_ui_file_delete (struct ui_file
*arg
)
259 return make_cleanup (do_ui_file_delete
, arg
);
262 /* Helper function for make_cleanup_ui_out_redirect_pop. */
265 do_ui_out_redirect_pop (void *arg
)
267 struct ui_out
*uiout
= arg
;
269 if (ui_out_redirect (uiout
, NULL
) < 0)
270 warning (_("Cannot restore redirection of the current output protocol"));
273 /* Return a new cleanup that pops the last redirection by ui_out_redirect
274 with NULL parameter. */
277 make_cleanup_ui_out_redirect_pop (struct ui_out
*uiout
)
279 return make_cleanup (do_ui_out_redirect_pop
, uiout
);
283 do_free_section_addr_info (void *arg
)
285 free_section_addr_info (arg
);
289 make_cleanup_free_section_addr_info (struct section_addr_info
*addrs
)
291 return make_cleanup (do_free_section_addr_info
, addrs
);
294 struct restore_integer_closure
301 restore_integer (void *p
)
303 struct restore_integer_closure
*closure
= p
;
305 *(closure
->variable
) = closure
->value
;
308 /* Remember the current value of *VARIABLE and make it restored when
309 the cleanup is run. */
312 make_cleanup_restore_integer (int *variable
)
314 struct restore_integer_closure
*c
=
315 xmalloc (sizeof (struct restore_integer_closure
));
317 c
->variable
= variable
;
318 c
->value
= *variable
;
320 return make_cleanup_dtor (restore_integer
, (void *) c
, xfree
);
323 /* Remember the current value of *VARIABLE and make it restored when
324 the cleanup is run. */
327 make_cleanup_restore_uinteger (unsigned int *variable
)
329 return make_cleanup_restore_integer ((int *) variable
);
332 /* Helper for make_cleanup_unpush_target. */
335 do_unpush_target (void *arg
)
337 struct target_ops
*ops
= arg
;
342 /* Return a new cleanup that unpushes OPS. */
345 make_cleanup_unpush_target (struct target_ops
*ops
)
347 return make_cleanup (do_unpush_target
, ops
);
350 /* Helper for make_cleanup_htab_delete compile time checking the types. */
353 do_htab_delete_cleanup (void *htab_voidp
)
355 htab_t htab
= htab_voidp
;
360 /* Return a new cleanup that deletes HTAB. */
363 make_cleanup_htab_delete (htab_t htab
)
365 return make_cleanup (do_htab_delete_cleanup
, htab
);
368 struct restore_ui_file_closure
370 struct ui_file
**variable
;
371 struct ui_file
*value
;
375 do_restore_ui_file (void *p
)
377 struct restore_ui_file_closure
*closure
= p
;
379 *(closure
->variable
) = closure
->value
;
382 /* Remember the current value of *VARIABLE and make it restored when
383 the cleanup is run. */
386 make_cleanup_restore_ui_file (struct ui_file
**variable
)
388 struct restore_ui_file_closure
*c
= XNEW (struct restore_ui_file_closure
);
390 c
->variable
= variable
;
391 c
->value
= *variable
;
393 return make_cleanup_dtor (do_restore_ui_file
, (void *) c
, xfree
);
396 /* Helper for make_cleanup_value_free_to_mark. */
399 do_value_free_to_mark (void *value
)
401 value_free_to_mark ((struct value
*) value
);
404 /* Free all values allocated since MARK was obtained by value_mark
405 (except for those released) when the cleanup is run. */
408 make_cleanup_value_free_to_mark (struct value
*mark
)
410 return make_cleanup (do_value_free_to_mark
, mark
);
413 /* Helper for make_cleanup_value_free. */
416 do_value_free (void *value
)
424 make_cleanup_value_free (struct value
*value
)
426 return make_cleanup (do_value_free
, value
);
429 /* Helper for make_cleanup_free_so. */
432 do_free_so (void *arg
)
434 struct so_list
*so
= arg
;
439 /* Make cleanup handler calling free_so for SO. */
442 make_cleanup_free_so (struct so_list
*so
)
444 return make_cleanup (do_free_so
, so
);
447 /* Helper for make_cleanup_restore_current_language. */
450 do_restore_current_language (void *p
)
452 enum language saved_lang
= (uintptr_t) p
;
454 set_language (saved_lang
);
457 /* Remember the current value of CURRENT_LANGUAGE and make it restored when
458 the cleanup is run. */
461 make_cleanup_restore_current_language (void)
463 enum language saved_lang
= current_language
->la_language
;
465 return make_cleanup (do_restore_current_language
,
466 (void *) (uintptr_t) saved_lang
);
469 /* Helper function for make_cleanup_clear_parser_state. */
472 do_clear_parser_state (void *ptr
)
474 struct parser_state
**p
= (struct parser_state
**) ptr
;
479 /* Clean (i.e., set to NULL) the parser state variable P. */
482 make_cleanup_clear_parser_state (struct parser_state
**p
)
484 return make_cleanup (do_clear_parser_state
, (void *) p
);
487 /* This function is useful for cleanups.
491 old_chain = make_cleanup (free_current_contents, &foo);
493 to arrange to free the object thus allocated. */
496 free_current_contents (void *ptr
)
498 void **location
= ptr
;
500 if (location
== NULL
)
501 internal_error (__FILE__
, __LINE__
,
502 _("free_current_contents: NULL pointer"));
503 if (*location
!= NULL
)
512 /* Print a warning message. The first argument STRING is the warning
513 message, used as an fprintf format string, the second is the
514 va_list of arguments for that string. A warning is unfiltered (not
515 paginated) so that the user does not need to page through each
516 screen full of warnings when there are lots of them. */
519 vwarning (const char *string
, va_list args
)
521 if (deprecated_warning_hook
)
522 (*deprecated_warning_hook
) (string
, args
);
525 target_terminal_ours ();
526 wrap_here (""); /* Force out any buffered output. */
527 gdb_flush (gdb_stdout
);
528 if (warning_pre_print
)
529 fputs_unfiltered (warning_pre_print
, gdb_stderr
);
530 vfprintf_unfiltered (gdb_stderr
, string
, args
);
531 fprintf_unfiltered (gdb_stderr
, "\n");
536 /* Print a warning message.
537 The first argument STRING is the warning message, used as a fprintf string,
538 and the remaining args are passed as arguments to it.
539 The primary difference between warnings and errors is that a warning
540 does not force the return to command level. */
543 warning (const char *string
, ...)
547 va_start (args
, string
);
548 vwarning (string
, args
);
552 /* Print an error message and return to command level.
553 The first argument STRING is the error message, used as a fprintf string,
554 and the remaining args are passed as arguments to it. */
557 verror (const char *string
, va_list args
)
559 throw_verror (GENERIC_ERROR
, string
, args
);
563 error (const char *string
, ...)
567 va_start (args
, string
);
568 throw_verror (GENERIC_ERROR
, string
, args
);
572 /* Print an error message and quit.
573 The first argument STRING is the error message, used as a fprintf string,
574 and the remaining args are passed as arguments to it. */
577 vfatal (const char *string
, va_list args
)
579 throw_vfatal (string
, args
);
583 fatal (const char *string
, ...)
587 va_start (args
, string
);
588 throw_vfatal (string
, args
);
593 error_stream (struct ui_file
*stream
)
595 char *message
= ui_file_xstrdup (stream
, NULL
);
597 make_cleanup (xfree
, message
);
598 error (("%s"), message
);
601 /* Dump core trying to increase the core soft limit to hard limit first. */
606 #ifdef HAVE_SETRLIMIT
607 struct rlimit rlim
= { RLIM_INFINITY
, RLIM_INFINITY
};
609 setrlimit (RLIMIT_CORE
, &rlim
);
610 #endif /* HAVE_SETRLIMIT */
612 abort (); /* NOTE: GDB has only three calls to abort(). */
615 /* Check whether GDB will be able to dump core using the dump_core
619 can_dump_core (const char *reason
)
621 #ifdef HAVE_GETRLIMIT
624 /* Be quiet and assume we can dump if an error is returned. */
625 if (getrlimit (RLIMIT_CORE
, &rlim
) != 0)
628 if (rlim
.rlim_max
== 0)
630 fprintf_unfiltered (gdb_stderr
,
631 _("%s\nUnable to dump core, use `ulimit -c"
632 " unlimited' before executing GDB next time.\n"),
636 #endif /* HAVE_GETRLIMIT */
641 /* Allow the user to configure the debugger behavior with respect to
642 what to do when an internal problem is detected. */
644 const char internal_problem_ask
[] = "ask";
645 const char internal_problem_yes
[] = "yes";
646 const char internal_problem_no
[] = "no";
647 static const char *const internal_problem_modes
[] =
649 internal_problem_ask
,
650 internal_problem_yes
,
655 /* Print a message reporting an internal error/warning. Ask the user
656 if they want to continue, dump core, or just exit. Return
657 something to indicate a quit. */
659 struct internal_problem
662 int user_settable_should_quit
;
663 const char *should_quit
;
664 int user_settable_should_dump_core
;
665 const char *should_dump_core
;
668 /* Report a problem, internal to GDB, to the user. Once the problem
669 has been reported, and assuming GDB didn't quit, the caller can
670 either allow execution to resume or throw an error. */
672 static void ATTRIBUTE_PRINTF (4, 0)
673 internal_vproblem (struct internal_problem
*problem
,
674 const char *file
, int line
, const char *fmt
, va_list ap
)
680 struct cleanup
*cleanup
= make_cleanup (null_cleanup
, NULL
);
682 /* Don't allow infinite error/warning recursion. */
684 static char msg
[] = "Recursive internal problem.\n";
693 fputs_unfiltered (msg
, gdb_stderr
);
694 abort (); /* NOTE: GDB has only three calls to abort(). */
697 /* Newer GLIBC versions put the warn_unused_result attribute
698 on write, but this is one of those rare cases where
699 ignoring the return value is correct. Casting to (void)
700 does not fix this problem. This is the solution suggested
701 at http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25509. */
702 if (write (STDERR_FILENO
, msg
, sizeof (msg
)) != sizeof (msg
))
703 abort (); /* NOTE: GDB has only three calls to abort(). */
708 /* Try to get the message out and at the start of a new line. */
709 target_terminal_ours ();
712 /* Create a string containing the full error/warning message. Need
713 to call query with this full string, as otherwize the reason
714 (error/warning) and question become separated. Format using a
715 style similar to a compiler error message. Include extra detail
716 so that the user knows that they are living on the edge. */
720 msg
= xstrvprintf (fmt
, ap
);
721 reason
= xstrprintf ("%s:%d: %s: %s\n"
722 "A problem internal to GDB has been detected,\n"
723 "further debugging may prove unreliable.",
724 file
, line
, problem
->name
, msg
);
726 make_cleanup (xfree
, reason
);
729 if (problem
->should_quit
== internal_problem_ask
)
731 /* Default (yes/batch case) is to quit GDB. When in batch mode
732 this lessens the likelihood of GDB going into an infinite
736 /* Emit the message and quit. */
737 fputs_unfiltered (reason
, gdb_stderr
);
738 fputs_unfiltered ("\n", gdb_stderr
);
742 quit_p
= query (_("%s\nQuit this debugging session? "), reason
);
744 else if (problem
->should_quit
== internal_problem_yes
)
746 else if (problem
->should_quit
== internal_problem_no
)
749 internal_error (__FILE__
, __LINE__
, _("bad switch"));
751 fputs_unfiltered (_("\nThis is a bug, please report it."), gdb_stderr
);
752 if (REPORT_BUGS_TO
[0])
753 fprintf_unfiltered (gdb_stderr
, _(" For instructions, see:\n%s."),
755 fputs_unfiltered ("\n\n", gdb_stderr
);
757 if (problem
->should_dump_core
== internal_problem_ask
)
759 if (!can_dump_core (reason
))
763 /* Default (yes/batch case) is to dump core. This leaves a GDB
764 `dropping' so that it is easier to see that something went
766 dump_core_p
= query (_("%s\nCreate a core file of GDB? "), reason
);
769 else if (problem
->should_dump_core
== internal_problem_yes
)
770 dump_core_p
= can_dump_core (reason
);
771 else if (problem
->should_dump_core
== internal_problem_no
)
774 internal_error (__FILE__
, __LINE__
, _("bad switch"));
787 #ifdef HAVE_WORKING_FORK
795 do_cleanups (cleanup
);
798 static struct internal_problem internal_error_problem
= {
799 "internal-error", 1, internal_problem_ask
, 1, internal_problem_ask
803 internal_verror (const char *file
, int line
, const char *fmt
, va_list ap
)
805 internal_vproblem (&internal_error_problem
, file
, line
, fmt
, ap
);
806 fatal (_("Command aborted."));
810 internal_error (const char *file
, int line
, const char *string
, ...)
814 va_start (ap
, string
);
815 internal_verror (file
, line
, string
, ap
);
819 static struct internal_problem internal_warning_problem
= {
820 "internal-warning", 1, internal_problem_ask
, 1, internal_problem_ask
824 internal_vwarning (const char *file
, int line
, const char *fmt
, va_list ap
)
826 internal_vproblem (&internal_warning_problem
, file
, line
, fmt
, ap
);
830 internal_warning (const char *file
, int line
, const char *string
, ...)
834 va_start (ap
, string
);
835 internal_vwarning (file
, line
, string
, ap
);
839 static struct internal_problem demangler_warning_problem
= {
840 "demangler-warning", 1, internal_problem_ask
, 0, internal_problem_no
844 demangler_vwarning (const char *file
, int line
, const char *fmt
, va_list ap
)
846 internal_vproblem (&demangler_warning_problem
, file
, line
, fmt
, ap
);
850 demangler_warning (const char *file
, int line
, const char *string
, ...)
854 va_start (ap
, string
);
855 demangler_vwarning (file
, line
, string
, ap
);
859 /* Dummy functions to keep add_prefix_cmd happy. */
862 set_internal_problem_cmd (char *args
, int from_tty
)
867 show_internal_problem_cmd (char *args
, int from_tty
)
871 /* When GDB reports an internal problem (error or warning) it gives
872 the user the opportunity to quit GDB and/or create a core file of
873 the current debug session. This function registers a few commands
874 that make it possible to specify that GDB should always or never
875 quit or create a core file, without asking. The commands look
878 maint set PROBLEM-NAME quit ask|yes|no
879 maint show PROBLEM-NAME quit
880 maint set PROBLEM-NAME corefile ask|yes|no
881 maint show PROBLEM-NAME corefile
883 Where PROBLEM-NAME is currently "internal-error" or
884 "internal-warning". */
887 add_internal_problem_command (struct internal_problem
*problem
)
889 struct cmd_list_element
**set_cmd_list
;
890 struct cmd_list_element
**show_cmd_list
;
894 set_cmd_list
= xmalloc (sizeof (*set_cmd_list
));
895 show_cmd_list
= xmalloc (sizeof (*set_cmd_list
));
896 *set_cmd_list
= NULL
;
897 *show_cmd_list
= NULL
;
899 set_doc
= xstrprintf (_("Configure what GDB does when %s is detected."),
902 show_doc
= xstrprintf (_("Show what GDB does when %s is detected."),
905 add_prefix_cmd ((char*) problem
->name
,
906 class_maintenance
, set_internal_problem_cmd
, set_doc
,
908 concat ("maintenance set ", problem
->name
, " ",
910 0/*allow-unknown*/, &maintenance_set_cmdlist
);
912 add_prefix_cmd ((char*) problem
->name
,
913 class_maintenance
, show_internal_problem_cmd
, show_doc
,
915 concat ("maintenance show ", problem
->name
, " ",
917 0/*allow-unknown*/, &maintenance_show_cmdlist
);
919 if (problem
->user_settable_should_quit
)
921 set_doc
= xstrprintf (_("Set whether GDB should quit "
922 "when an %s is detected"),
924 show_doc
= xstrprintf (_("Show whether GDB will quit "
925 "when an %s is detected"),
927 add_setshow_enum_cmd ("quit", class_maintenance
,
928 internal_problem_modes
,
929 &problem
->should_quit
,
942 if (problem
->user_settable_should_dump_core
)
944 set_doc
= xstrprintf (_("Set whether GDB should create a core "
945 "file of GDB when %s is detected"),
947 show_doc
= xstrprintf (_("Show whether GDB will create a core "
948 "file of GDB when %s is detected"),
950 add_setshow_enum_cmd ("corefile", class_maintenance
,
951 internal_problem_modes
,
952 &problem
->should_dump_core
,
966 /* Return a newly allocated string, containing the PREFIX followed
967 by the system error message for errno (separated by a colon).
969 The result must be deallocated after use. */
972 perror_string (const char *prefix
)
977 err
= safe_strerror (errno
);
978 combined
= (char *) xmalloc (strlen (err
) + strlen (prefix
) + 3);
979 strcpy (combined
, prefix
);
980 strcat (combined
, ": ");
981 strcat (combined
, err
);
986 /* Print the system error message for errno, and also mention STRING
987 as the file name for which the error was encountered. Use ERRCODE
988 for the thrown exception. Then return to command level. */
991 throw_perror_with_name (enum errors errcode
, const char *string
)
995 combined
= perror_string (string
);
996 make_cleanup (xfree
, combined
);
998 /* I understand setting these is a matter of taste. Still, some people
999 may clear errno but not know about bfd_error. Doing this here is not
1001 bfd_set_error (bfd_error_no_error
);
1004 throw_error (errcode
, _("%s."), combined
);
1007 /* See throw_perror_with_name, ERRCODE defaults here to GENERIC_ERROR. */
1010 perror_with_name (const char *string
)
1012 throw_perror_with_name (GENERIC_ERROR
, string
);
1015 /* Same as perror_with_name except that it prints a warning instead
1016 of throwing an error. */
1019 perror_warning_with_name (const char *string
)
1023 combined
= perror_string (string
);
1024 warning (_("%s"), combined
);
1028 /* Print the system error message for ERRCODE, and also mention STRING
1029 as the file name for which the error was encountered. */
1032 print_sys_errmsg (const char *string
, int errcode
)
1037 err
= safe_strerror (errcode
);
1038 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
1039 strcpy (combined
, string
);
1040 strcat (combined
, ": ");
1041 strcat (combined
, err
);
1043 /* We want anything which was printed on stdout to come out first, before
1045 gdb_flush (gdb_stdout
);
1046 fprintf_unfiltered (gdb_stderr
, "%s.\n", combined
);
1049 /* Control C eventually causes this to be called, at a convenient time. */
1054 if (sync_quit_force_run
)
1056 sync_quit_force_run
= 0;
1057 quit_force (NULL
, stdin
== instream
);
1061 /* No steenking SIGINT will ever be coming our way when the
1062 program is resumed. Don't lie. */
1066 /* If there is no terminal switching for this target, then we can't
1067 possibly get screwed by the lack of job control. */
1068 || current_target
.to_terminal_ours
== NULL
)
1071 fatal ("Quit (expect signal SIGINT when the program is resumed)");
1076 /* Called when a memory allocation fails, with the number of bytes of
1077 memory requested in SIZE. */
1080 malloc_failure (long size
)
1084 internal_error (__FILE__
, __LINE__
,
1085 _("virtual memory exhausted: can't allocate %ld bytes."),
1090 internal_error (__FILE__
, __LINE__
, _("virtual memory exhausted."));
1094 /* My replacement for the read system call.
1095 Used like `read' but keeps going if `read' returns too soon. */
1098 myread (int desc
, char *addr
, int len
)
1105 val
= read (desc
, addr
, len
);
1109 return orglen
- len
;
1117 print_spaces (int n
, struct ui_file
*file
)
1119 fputs_unfiltered (n_spaces (n
), file
);
1122 /* Print a host address. */
1125 gdb_print_host_address (const void *addr
, struct ui_file
*stream
)
1127 fprintf_filtered (stream
, "%s", host_address_to_string (addr
));
1131 /* A cleanup function that calls regfree. */
1134 do_regfree_cleanup (void *r
)
1139 /* Create a new cleanup that frees the compiled regular expression R. */
1142 make_regfree_cleanup (regex_t
*r
)
1144 return make_cleanup (do_regfree_cleanup
, r
);
1147 /* Return an xmalloc'd error message resulting from a regular
1148 expression compilation failure. */
1151 get_regcomp_error (int code
, regex_t
*rx
)
1153 size_t length
= regerror (code
, rx
, NULL
, 0);
1154 char *result
= xmalloc (length
);
1156 regerror (code
, rx
, result
, length
);
1160 /* Compile a regexp and throw an exception on error. This returns a
1161 cleanup to free the resulting pattern on success. RX must not be
1165 compile_rx_or_error (regex_t
*pattern
, const char *rx
, const char *message
)
1169 gdb_assert (rx
!= NULL
);
1171 code
= regcomp (pattern
, rx
, REG_NOSUB
);
1174 char *err
= get_regcomp_error (code
, pattern
);
1176 make_cleanup (xfree
, err
);
1177 error (("%s: %s"), message
, err
);
1180 return make_regfree_cleanup (pattern
);
1185 /* This function supports the query, nquery, and yquery functions.
1186 Ask user a y-or-n question and return 0 if answer is no, 1 if
1187 answer is yes, or default the answer to the specified default
1188 (for yquery or nquery). DEFCHAR may be 'y' or 'n' to provide a
1189 default answer, or '\0' for no default.
1190 CTLSTR is the control string and should end in "? ". It should
1191 not say how to answer, because we do that.
1192 ARGS are the arguments passed along with the CTLSTR argument to
1195 static int ATTRIBUTE_PRINTF (1, 0)
1196 defaulted_query (const char *ctlstr
, const char defchar
, va_list args
)
1202 char def_answer
, not_def_answer
;
1203 char *y_string
, *n_string
, *question
;
1204 /* Used to add duration we waited for user to respond to
1205 prompt_for_continue_wait_time. */
1206 struct timeval prompt_started
, prompt_ended
, prompt_delta
;
1208 /* Set up according to which answer is the default. */
1209 if (defchar
== '\0')
1213 not_def_answer
= 'N';
1217 else if (defchar
== 'y')
1221 not_def_answer
= 'N';
1229 not_def_answer
= 'Y';
1234 /* Automatically answer the default value if the user did not want
1235 prompts or the command was issued with the server prefix. */
1236 if (!confirm
|| server_command
)
1239 /* If input isn't coming from the user directly, just say what
1240 question we're asking, and then answer the default automatically. This
1241 way, important error messages don't get lost when talking to GDB
1243 if (! input_from_terminal_p ())
1246 vfprintf_filtered (gdb_stdout
, ctlstr
, args
);
1248 printf_filtered (_("(%s or %s) [answered %c; "
1249 "input not from terminal]\n"),
1250 y_string
, n_string
, def_answer
);
1251 gdb_flush (gdb_stdout
);
1256 if (deprecated_query_hook
)
1258 return deprecated_query_hook (ctlstr
, args
);
1261 /* Format the question outside of the loop, to avoid reusing args. */
1262 question
= xstrvprintf (ctlstr
, args
);
1264 /* Used for calculating time spend waiting for user. */
1265 gettimeofday (&prompt_started
, NULL
);
1269 wrap_here (""); /* Flush any buffered output. */
1270 gdb_flush (gdb_stdout
);
1272 if (annotation_level
> 1)
1273 printf_filtered (("\n\032\032pre-query\n"));
1275 fputs_filtered (question
, gdb_stdout
);
1276 printf_filtered (_("(%s or %s) "), y_string
, n_string
);
1278 if (annotation_level
> 1)
1279 printf_filtered (("\n\032\032query\n"));
1282 gdb_flush (gdb_stdout
);
1284 answer
= fgetc (stdin
);
1286 /* We expect fgetc to block until a character is read. But
1287 this may not be the case if the terminal was opened with
1288 the NONBLOCK flag. In that case, if there is nothing to
1289 read on stdin, fgetc returns EOF, but also sets the error
1290 condition flag on stdin and errno to EAGAIN. With a true
1291 EOF, stdin's error condition flag is not set.
1293 A situation where this behavior was observed is a pseudo
1295 while (answer
== EOF
&& ferror (stdin
) && errno
== EAGAIN
)
1297 /* Not a real EOF. Wait a little while and try again until
1298 we read something. */
1301 answer
= fgetc (stdin
);
1304 clearerr (stdin
); /* in case of C-d */
1305 if (answer
== EOF
) /* C-d */
1307 printf_filtered ("EOF [assumed %c]\n", def_answer
);
1311 /* Eat rest of input line, to EOF or newline. */
1315 ans2
= fgetc (stdin
);
1318 while (ans2
!= EOF
&& ans2
!= '\n' && ans2
!= '\r');
1322 /* Check answer. For the non-default, the user must specify
1323 the non-default explicitly. */
1324 if (answer
== not_def_answer
)
1326 retval
= !def_value
;
1329 /* Otherwise, if a default was specified, the user may either
1330 specify the required input or have it default by entering
1332 if (answer
== def_answer
1333 || (defchar
!= '\0' &&
1334 (answer
== '\n' || answer
== '\r' || answer
== EOF
)))
1339 /* Invalid entries are not defaulted and require another selection. */
1340 printf_filtered (_("Please answer %s or %s.\n"),
1341 y_string
, n_string
);
1344 /* Add time spend in this routine to prompt_for_continue_wait_time. */
1345 gettimeofday (&prompt_ended
, NULL
);
1346 timeval_sub (&prompt_delta
, &prompt_ended
, &prompt_started
);
1347 timeval_add (&prompt_for_continue_wait_time
,
1348 &prompt_for_continue_wait_time
, &prompt_delta
);
1351 if (annotation_level
> 1)
1352 printf_filtered (("\n\032\032post-query\n"));
1357 /* Ask user a y-or-n question and return 0 if answer is no, 1 if
1358 answer is yes, or 0 if answer is defaulted.
1359 Takes three args which are given to printf to print the question.
1360 The first, a control string, should end in "? ".
1361 It should not say how to answer, because we do that. */
1364 nquery (const char *ctlstr
, ...)
1369 va_start (args
, ctlstr
);
1370 ret
= defaulted_query (ctlstr
, 'n', args
);
1375 /* Ask user a y-or-n question and return 0 if answer is no, 1 if
1376 answer is yes, or 1 if answer is defaulted.
1377 Takes three args which are given to printf to print the question.
1378 The first, a control string, should end in "? ".
1379 It should not say how to answer, because we do that. */
1382 yquery (const char *ctlstr
, ...)
1387 va_start (args
, ctlstr
);
1388 ret
= defaulted_query (ctlstr
, 'y', args
);
1393 /* Ask user a y-or-n question and return 1 iff answer is yes.
1394 Takes three args which are given to printf to print the question.
1395 The first, a control string, should end in "? ".
1396 It should not say how to answer, because we do that. */
1399 query (const char *ctlstr
, ...)
1404 va_start (args
, ctlstr
);
1405 ret
= defaulted_query (ctlstr
, '\0', args
);
1410 /* A helper for parse_escape that converts a host character to a
1411 target character. C is the host character. If conversion is
1412 possible, then the target character is stored in *TARGET_C and the
1413 function returns 1. Otherwise, the function returns 0. */
1416 host_char_to_target (struct gdbarch
*gdbarch
, int c
, int *target_c
)
1418 struct obstack host_data
;
1420 struct cleanup
*cleanups
;
1423 obstack_init (&host_data
);
1424 cleanups
= make_cleanup_obstack_free (&host_data
);
1426 convert_between_encodings (target_charset (gdbarch
), host_charset (),
1427 (gdb_byte
*) &the_char
, 1, 1,
1428 &host_data
, translit_none
);
1430 if (obstack_object_size (&host_data
) == 1)
1433 *target_c
= *(char *) obstack_base (&host_data
);
1436 do_cleanups (cleanups
);
1440 /* Parse a C escape sequence. STRING_PTR points to a variable
1441 containing a pointer to the string to parse. That pointer
1442 should point to the character after the \. That pointer
1443 is updated past the characters we use. The value of the
1444 escape sequence is returned.
1446 A negative value means the sequence \ newline was seen,
1447 which is supposed to be equivalent to nothing at all.
1449 If \ is followed by a null character, we return a negative
1450 value and leave the string pointer pointing at the null character.
1452 If \ is followed by 000, we return 0 and leave the string pointer
1453 after the zeros. A value of 0 does not mean end of string. */
1456 parse_escape (struct gdbarch
*gdbarch
, const char **string_ptr
)
1458 int target_char
= -2; /* Initialize to avoid GCC warnings. */
1459 int c
= *(*string_ptr
)++;
1478 int i
= host_hex_value (c
);
1483 if (isdigit (c
) && c
!= '8' && c
!= '9')
1487 i
+= host_hex_value (c
);
1523 if (!host_char_to_target (gdbarch
, c
, &target_char
))
1524 error (_("The escape sequence `\\%c' is equivalent to plain `%c',"
1525 " which has no equivalent\nin the `%s' character set."),
1526 c
, c
, target_charset (gdbarch
));
1530 /* Print the character C on STREAM as part of the contents of a literal
1531 string whose delimiter is QUOTER. Note that this routine should only
1532 be call for printing things which are independent of the language
1533 of the program being debugged.
1535 printchar will normally escape backslashes and instances of QUOTER. If
1536 QUOTER is 0, printchar won't escape backslashes or any quoting character.
1537 As a side effect, if you pass the backslash character as the QUOTER,
1538 printchar will escape backslashes as usual, but not any other quoting
1542 printchar (int c
, void (*do_fputs
) (const char *, struct ui_file
*),
1543 void (*do_fprintf
) (struct ui_file
*, const char *, ...)
1544 ATTRIBUTE_FPTR_PRINTF_2
, struct ui_file
*stream
, int quoter
)
1546 c
&= 0xFF; /* Avoid sign bit follies */
1548 if (c
< 0x20 || /* Low control chars */
1549 (c
>= 0x7F && c
< 0xA0) || /* DEL, High controls */
1550 (sevenbit_strings
&& c
>= 0x80))
1551 { /* high order bit set */
1555 do_fputs ("\\n", stream
);
1558 do_fputs ("\\b", stream
);
1561 do_fputs ("\\t", stream
);
1564 do_fputs ("\\f", stream
);
1567 do_fputs ("\\r", stream
);
1570 do_fputs ("\\e", stream
);
1573 do_fputs ("\\a", stream
);
1576 do_fprintf (stream
, "\\%.3o", (unsigned int) c
);
1582 if (quoter
!= 0 && (c
== '\\' || c
== quoter
))
1583 do_fputs ("\\", stream
);
1584 do_fprintf (stream
, "%c", c
);
1588 /* Print the character C on STREAM as part of the contents of a
1589 literal string whose delimiter is QUOTER. Note that these routines
1590 should only be call for printing things which are independent of
1591 the language of the program being debugged. */
1594 fputstr_filtered (const char *str
, int quoter
, struct ui_file
*stream
)
1597 printchar (*str
++, fputs_filtered
, fprintf_filtered
, stream
, quoter
);
1601 fputstr_unfiltered (const char *str
, int quoter
, struct ui_file
*stream
)
1604 printchar (*str
++, fputs_unfiltered
, fprintf_unfiltered
, stream
, quoter
);
1608 fputstrn_filtered (const char *str
, int n
, int quoter
,
1609 struct ui_file
*stream
)
1613 for (i
= 0; i
< n
; i
++)
1614 printchar (str
[i
], fputs_filtered
, fprintf_filtered
, stream
, quoter
);
1618 fputstrn_unfiltered (const char *str
, int n
, int quoter
,
1619 struct ui_file
*stream
)
1623 for (i
= 0; i
< n
; i
++)
1624 printchar (str
[i
], fputs_unfiltered
, fprintf_unfiltered
, stream
, quoter
);
1628 /* Number of lines per page or UINT_MAX if paging is disabled. */
1629 static unsigned int lines_per_page
;
1631 show_lines_per_page (struct ui_file
*file
, int from_tty
,
1632 struct cmd_list_element
*c
, const char *value
)
1634 fprintf_filtered (file
,
1635 _("Number of lines gdb thinks are in a page is %s.\n"),
1639 /* Number of chars per line or UINT_MAX if line folding is disabled. */
1640 static unsigned int chars_per_line
;
1642 show_chars_per_line (struct ui_file
*file
, int from_tty
,
1643 struct cmd_list_element
*c
, const char *value
)
1645 fprintf_filtered (file
,
1646 _("Number of characters gdb thinks "
1647 "are in a line is %s.\n"),
1651 /* Current count of lines printed on this page, chars on this line. */
1652 static unsigned int lines_printed
, chars_printed
;
1654 /* Buffer and start column of buffered text, for doing smarter word-
1655 wrapping. When someone calls wrap_here(), we start buffering output
1656 that comes through fputs_filtered(). If we see a newline, we just
1657 spit it out and forget about the wrap_here(). If we see another
1658 wrap_here(), we spit it out and remember the newer one. If we see
1659 the end of the line, we spit out a newline, the indent, and then
1660 the buffered output. */
1662 /* Malloc'd buffer with chars_per_line+2 bytes. Contains characters which
1663 are waiting to be output (they have already been counted in chars_printed).
1664 When wrap_buffer[0] is null, the buffer is empty. */
1665 static char *wrap_buffer
;
1667 /* Pointer in wrap_buffer to the next character to fill. */
1668 static char *wrap_pointer
;
1670 /* String to indent by if the wrap occurs. Must not be NULL if wrap_column
1672 static char *wrap_indent
;
1674 /* Column number on the screen where wrap_buffer begins, or 0 if wrapping
1675 is not in effect. */
1676 static int wrap_column
;
1679 /* Inialize the number of lines per page and chars per line. */
1682 init_page_info (void)
1686 lines_per_page
= UINT_MAX
;
1687 chars_per_line
= UINT_MAX
;
1691 if (!tui_get_command_dimension (&chars_per_line
, &lines_per_page
))
1696 #if defined(__GO32__)
1697 rows
= ScreenRows ();
1698 cols
= ScreenCols ();
1699 lines_per_page
= rows
;
1700 chars_per_line
= cols
;
1702 /* Make sure Readline has initialized its terminal settings. */
1703 rl_reset_terminal (NULL
);
1705 /* Get the screen size from Readline. */
1706 rl_get_screen_size (&rows
, &cols
);
1707 lines_per_page
= rows
;
1708 chars_per_line
= cols
;
1710 /* Readline should have fetched the termcap entry for us.
1711 Only try to use tgetnum function if rl_get_screen_size
1712 did not return a useful value. */
1713 if (((rows
<= 0) && (tgetnum ("li") < 0))
1714 /* Also disable paging if inside EMACS. */
1715 || getenv ("EMACS"))
1717 /* The number of lines per page is not mentioned in the terminal
1718 description or EMACS evironment variable is set. This probably
1719 means that paging is not useful, so disable paging. */
1720 lines_per_page
= UINT_MAX
;
1723 /* If the output is not a terminal, don't paginate it. */
1724 if (!ui_file_isatty (gdb_stdout
))
1725 lines_per_page
= UINT_MAX
;
1733 /* Helper for make_cleanup_restore_page_info. */
1736 do_restore_page_info_cleanup (void *arg
)
1742 /* Provide cleanup for restoring the terminal size. */
1745 make_cleanup_restore_page_info (void)
1747 struct cleanup
*back_to
;
1749 back_to
= make_cleanup (do_restore_page_info_cleanup
, NULL
);
1750 make_cleanup_restore_uinteger (&lines_per_page
);
1751 make_cleanup_restore_uinteger (&chars_per_line
);
1756 /* Temporarily set BATCH_FLAG and the associated unlimited terminal size.
1757 Provide cleanup for restoring the original state. */
1760 set_batch_flag_and_make_cleanup_restore_page_info (void)
1762 struct cleanup
*back_to
= make_cleanup_restore_page_info ();
1764 make_cleanup_restore_integer (&batch_flag
);
1771 /* Set the screen size based on LINES_PER_PAGE and CHARS_PER_LINE. */
1774 set_screen_size (void)
1776 int rows
= lines_per_page
;
1777 int cols
= chars_per_line
;
1785 /* Update Readline's idea of the terminal size. */
1786 rl_set_screen_size (rows
, cols
);
1789 /* Reinitialize WRAP_BUFFER according to the current value of
1795 if (chars_per_line
== 0)
1800 wrap_buffer
= (char *) xmalloc (chars_per_line
+ 2);
1801 wrap_buffer
[0] = '\0';
1804 wrap_buffer
= (char *) xrealloc (wrap_buffer
, chars_per_line
+ 2);
1805 wrap_pointer
= wrap_buffer
; /* Start it at the beginning. */
1809 set_width_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
1816 set_height_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
1821 /* Wait, so the user can read what's on the screen. Prompt the user
1822 to continue by pressing RETURN. */
1825 prompt_for_continue (void)
1828 char cont_prompt
[120];
1829 /* Used to add duration we waited for user to respond to
1830 prompt_for_continue_wait_time. */
1831 struct timeval prompt_started
, prompt_ended
, prompt_delta
;
1833 gettimeofday (&prompt_started
, NULL
);
1835 if (annotation_level
> 1)
1836 printf_unfiltered (("\n\032\032pre-prompt-for-continue\n"));
1838 strcpy (cont_prompt
,
1839 "---Type <return> to continue, or q <return> to quit---");
1840 if (annotation_level
> 1)
1841 strcat (cont_prompt
, "\n\032\032prompt-for-continue\n");
1843 /* We must do this *before* we call gdb_readline, else it will eventually
1844 call us -- thinking that we're trying to print beyond the end of the
1846 reinitialize_more_filter ();
1850 /* On a real operating system, the user can quit with SIGINT.
1853 'q' is provided on all systems so users don't have to change habits
1854 from system to system, and because telling them what to do in
1855 the prompt is more user-friendly than expecting them to think of
1857 /* Call readline, not gdb_readline, because GO32 readline handles control-C
1858 whereas control-C to gdb_readline will cause the user to get dumped
1860 ignore
= gdb_readline_wrapper (cont_prompt
);
1862 /* Add time spend in this routine to prompt_for_continue_wait_time. */
1863 gettimeofday (&prompt_ended
, NULL
);
1864 timeval_sub (&prompt_delta
, &prompt_ended
, &prompt_started
);
1865 timeval_add (&prompt_for_continue_wait_time
,
1866 &prompt_for_continue_wait_time
, &prompt_delta
);
1868 if (annotation_level
> 1)
1869 printf_unfiltered (("\n\032\032post-prompt-for-continue\n"));
1875 while (*p
== ' ' || *p
== '\t')
1883 /* Now we have to do this again, so that GDB will know that it doesn't
1884 need to save the ---Type <return>--- line at the top of the screen. */
1885 reinitialize_more_filter ();
1887 dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */
1890 /* Initalize timer to keep track of how long we waited for the user. */
1893 reset_prompt_for_continue_wait_time (void)
1895 static const struct timeval zero_timeval
= { 0 };
1897 prompt_for_continue_wait_time
= zero_timeval
;
1900 /* Fetch the cumulative time spent in prompt_for_continue. */
1903 get_prompt_for_continue_wait_time (void)
1905 return prompt_for_continue_wait_time
;
1908 /* Reinitialize filter; ie. tell it to reset to original values. */
1911 reinitialize_more_filter (void)
1917 /* Indicate that if the next sequence of characters overflows the line,
1918 a newline should be inserted here rather than when it hits the end.
1919 If INDENT is non-null, it is a string to be printed to indent the
1920 wrapped part on the next line. INDENT must remain accessible until
1921 the next call to wrap_here() or until a newline is printed through
1924 If the line is already overfull, we immediately print a newline and
1925 the indentation, and disable further wrapping.
1927 If we don't know the width of lines, but we know the page height,
1928 we must not wrap words, but should still keep track of newlines
1929 that were explicitly printed.
1931 INDENT should not contain tabs, as that will mess up the char count
1932 on the next line. FIXME.
1934 This routine is guaranteed to force out any output which has been
1935 squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be
1936 used to force out output from the wrap_buffer. */
1939 wrap_here (char *indent
)
1941 /* This should have been allocated, but be paranoid anyway. */
1943 internal_error (__FILE__
, __LINE__
,
1944 _("failed internal consistency check"));
1948 *wrap_pointer
= '\0';
1949 fputs_unfiltered (wrap_buffer
, gdb_stdout
);
1951 wrap_pointer
= wrap_buffer
;
1952 wrap_buffer
[0] = '\0';
1953 if (chars_per_line
== UINT_MAX
) /* No line overflow checking. */
1957 else if (chars_printed
>= chars_per_line
)
1959 puts_filtered ("\n");
1961 puts_filtered (indent
);
1966 wrap_column
= chars_printed
;
1970 wrap_indent
= indent
;
1974 /* Print input string to gdb_stdout, filtered, with wrap,
1975 arranging strings in columns of n chars. String can be
1976 right or left justified in the column. Never prints
1977 trailing spaces. String should never be longer than
1978 width. FIXME: this could be useful for the EXAMINE
1979 command, which currently doesn't tabulate very well. */
1982 puts_filtered_tabular (char *string
, int width
, int right
)
1988 gdb_assert (chars_per_line
> 0);
1989 if (chars_per_line
== UINT_MAX
)
1991 fputs_filtered (string
, gdb_stdout
);
1992 fputs_filtered ("\n", gdb_stdout
);
1996 if (((chars_printed
- 1) / width
+ 2) * width
>= chars_per_line
)
1997 fputs_filtered ("\n", gdb_stdout
);
1999 if (width
>= chars_per_line
)
2000 width
= chars_per_line
- 1;
2002 stringlen
= strlen (string
);
2004 if (chars_printed
> 0)
2005 spaces
= width
- (chars_printed
- 1) % width
- 1;
2007 spaces
+= width
- stringlen
;
2009 spacebuf
= alloca (spaces
+ 1);
2010 spacebuf
[spaces
] = '\0';
2012 spacebuf
[spaces
] = ' ';
2014 fputs_filtered (spacebuf
, gdb_stdout
);
2015 fputs_filtered (string
, gdb_stdout
);
2019 /* Ensure that whatever gets printed next, using the filtered output
2020 commands, starts at the beginning of the line. I.e. if there is
2021 any pending output for the current line, flush it and start a new
2022 line. Otherwise do nothing. */
2027 if (chars_printed
> 0)
2029 puts_filtered ("\n");
2034 /* Like fputs but if FILTER is true, pause after every screenful.
2036 Regardless of FILTER can wrap at points other than the final
2037 character of a line.
2039 Unlike fputs, fputs_maybe_filtered does not return a value.
2040 It is OK for LINEBUFFER to be NULL, in which case just don't print
2043 Note that a longjmp to top level may occur in this routine (only if
2044 FILTER is true) (since prompt_for_continue may do so) so this
2045 routine should not be called when cleanups are not in place. */
2048 fputs_maybe_filtered (const char *linebuffer
, struct ui_file
*stream
,
2051 const char *lineptr
;
2053 if (linebuffer
== 0)
2056 /* Don't do any filtering if it is disabled. */
2057 if (stream
!= gdb_stdout
2058 || !pagination_enabled
2060 || (lines_per_page
== UINT_MAX
&& chars_per_line
== UINT_MAX
)
2061 || top_level_interpreter () == NULL
2062 || ui_out_is_mi_like_p (interp_ui_out (top_level_interpreter ())))
2064 fputs_unfiltered (linebuffer
, stream
);
2068 /* Go through and output each character. Show line extension
2069 when this is necessary; prompt user for new page when this is
2072 lineptr
= linebuffer
;
2075 /* Possible new page. */
2076 if (filter
&& (lines_printed
>= lines_per_page
- 1))
2077 prompt_for_continue ();
2079 while (*lineptr
&& *lineptr
!= '\n')
2081 /* Print a single line. */
2082 if (*lineptr
== '\t')
2085 *wrap_pointer
++ = '\t';
2087 fputc_unfiltered ('\t', stream
);
2088 /* Shifting right by 3 produces the number of tab stops
2089 we have already passed, and then adding one and
2090 shifting left 3 advances to the next tab stop. */
2091 chars_printed
= ((chars_printed
>> 3) + 1) << 3;
2097 *wrap_pointer
++ = *lineptr
;
2099 fputc_unfiltered (*lineptr
, stream
);
2104 if (chars_printed
>= chars_per_line
)
2106 unsigned int save_chars
= chars_printed
;
2110 /* If we aren't actually wrapping, don't output newline --
2111 if chars_per_line is right, we probably just overflowed
2112 anyway; if it's wrong, let us keep going. */
2114 fputc_unfiltered ('\n', stream
);
2116 /* Possible new page. */
2117 if (lines_printed
>= lines_per_page
- 1)
2118 prompt_for_continue ();
2120 /* Now output indentation and wrapped string. */
2123 fputs_unfiltered (wrap_indent
, stream
);
2124 *wrap_pointer
= '\0'; /* Null-terminate saved stuff, */
2125 fputs_unfiltered (wrap_buffer
, stream
); /* and eject it. */
2126 /* FIXME, this strlen is what prevents wrap_indent from
2127 containing tabs. However, if we recurse to print it
2128 and count its chars, we risk trouble if wrap_indent is
2129 longer than (the user settable) chars_per_line.
2130 Note also that this can set chars_printed > chars_per_line
2131 if we are printing a long string. */
2132 chars_printed
= strlen (wrap_indent
)
2133 + (save_chars
- wrap_column
);
2134 wrap_pointer
= wrap_buffer
; /* Reset buffer */
2135 wrap_buffer
[0] = '\0';
2136 wrap_column
= 0; /* And disable fancy wrap */
2141 if (*lineptr
== '\n')
2144 wrap_here ((char *) 0); /* Spit out chars, cancel
2147 fputc_unfiltered ('\n', stream
);
2154 fputs_filtered (const char *linebuffer
, struct ui_file
*stream
)
2156 fputs_maybe_filtered (linebuffer
, stream
, 1);
2160 putchar_unfiltered (int c
)
2164 ui_file_write (gdb_stdout
, &buf
, 1);
2168 /* Write character C to gdb_stdout using GDB's paging mechanism and return C.
2169 May return nonlocally. */
2172 putchar_filtered (int c
)
2174 return fputc_filtered (c
, gdb_stdout
);
2178 fputc_unfiltered (int c
, struct ui_file
*stream
)
2182 ui_file_write (stream
, &buf
, 1);
2187 fputc_filtered (int c
, struct ui_file
*stream
)
2193 fputs_filtered (buf
, stream
);
2197 /* puts_debug is like fputs_unfiltered, except it prints special
2198 characters in printable fashion. */
2201 puts_debug (char *prefix
, char *string
, char *suffix
)
2205 /* Print prefix and suffix after each line. */
2206 static int new_line
= 1;
2207 static int return_p
= 0;
2208 static char *prev_prefix
= "";
2209 static char *prev_suffix
= "";
2211 if (*string
== '\n')
2214 /* If the prefix is changing, print the previous suffix, a new line,
2215 and the new prefix. */
2216 if ((return_p
|| (strcmp (prev_prefix
, prefix
) != 0)) && !new_line
)
2218 fputs_unfiltered (prev_suffix
, gdb_stdlog
);
2219 fputs_unfiltered ("\n", gdb_stdlog
);
2220 fputs_unfiltered (prefix
, gdb_stdlog
);
2223 /* Print prefix if we printed a newline during the previous call. */
2227 fputs_unfiltered (prefix
, gdb_stdlog
);
2230 prev_prefix
= prefix
;
2231 prev_suffix
= suffix
;
2233 /* Output characters in a printable format. */
2234 while ((ch
= *string
++) != '\0')
2240 fputc_unfiltered (ch
, gdb_stdlog
);
2243 fprintf_unfiltered (gdb_stdlog
, "\\x%02x", ch
& 0xff);
2247 fputs_unfiltered ("\\\\", gdb_stdlog
);
2250 fputs_unfiltered ("\\b", gdb_stdlog
);
2253 fputs_unfiltered ("\\f", gdb_stdlog
);
2257 fputs_unfiltered ("\\n", gdb_stdlog
);
2260 fputs_unfiltered ("\\r", gdb_stdlog
);
2263 fputs_unfiltered ("\\t", gdb_stdlog
);
2266 fputs_unfiltered ("\\v", gdb_stdlog
);
2270 return_p
= ch
== '\r';
2273 /* Print suffix if we printed a newline. */
2276 fputs_unfiltered (suffix
, gdb_stdlog
);
2277 fputs_unfiltered ("\n", gdb_stdlog
);
2282 /* Print a variable number of ARGS using format FORMAT. If this
2283 information is going to put the amount written (since the last call
2284 to REINITIALIZE_MORE_FILTER or the last page break) over the page size,
2285 call prompt_for_continue to get the users permision to continue.
2287 Unlike fprintf, this function does not return a value.
2289 We implement three variants, vfprintf (takes a vararg list and stream),
2290 fprintf (takes a stream to write on), and printf (the usual).
2292 Note also that a longjmp to top level may occur in this routine
2293 (since prompt_for_continue may do so) so this routine should not be
2294 called when cleanups are not in place. */
2297 vfprintf_maybe_filtered (struct ui_file
*stream
, const char *format
,
2298 va_list args
, int filter
)
2301 struct cleanup
*old_cleanups
;
2303 linebuffer
= xstrvprintf (format
, args
);
2304 old_cleanups
= make_cleanup (xfree
, linebuffer
);
2305 fputs_maybe_filtered (linebuffer
, stream
, filter
);
2306 do_cleanups (old_cleanups
);
2311 vfprintf_filtered (struct ui_file
*stream
, const char *format
, va_list args
)
2313 vfprintf_maybe_filtered (stream
, format
, args
, 1);
2317 vfprintf_unfiltered (struct ui_file
*stream
, const char *format
, va_list args
)
2320 struct cleanup
*old_cleanups
;
2322 linebuffer
= xstrvprintf (format
, args
);
2323 old_cleanups
= make_cleanup (xfree
, linebuffer
);
2324 if (debug_timestamp
&& stream
== gdb_stdlog
)
2330 gettimeofday (&tm
, NULL
);
2332 len
= strlen (linebuffer
);
2333 need_nl
= (len
> 0 && linebuffer
[len
- 1] != '\n');
2335 timestamp
= xstrprintf ("%ld:%ld %s%s",
2336 (long) tm
.tv_sec
, (long) tm
.tv_usec
,
2338 need_nl
? "\n": "");
2339 make_cleanup (xfree
, timestamp
);
2340 fputs_unfiltered (timestamp
, stream
);
2343 fputs_unfiltered (linebuffer
, stream
);
2344 do_cleanups (old_cleanups
);
2348 vprintf_filtered (const char *format
, va_list args
)
2350 vfprintf_maybe_filtered (gdb_stdout
, format
, args
, 1);
2354 vprintf_unfiltered (const char *format
, va_list args
)
2356 vfprintf_unfiltered (gdb_stdout
, format
, args
);
2360 fprintf_filtered (struct ui_file
*stream
, const char *format
, ...)
2364 va_start (args
, format
);
2365 vfprintf_filtered (stream
, format
, args
);
2370 fprintf_unfiltered (struct ui_file
*stream
, const char *format
, ...)
2374 va_start (args
, format
);
2375 vfprintf_unfiltered (stream
, format
, args
);
2379 /* Like fprintf_filtered, but prints its result indented.
2380 Called as fprintfi_filtered (spaces, stream, format, ...); */
2383 fprintfi_filtered (int spaces
, struct ui_file
*stream
, const char *format
,
2388 va_start (args
, format
);
2389 print_spaces_filtered (spaces
, stream
);
2391 vfprintf_filtered (stream
, format
, args
);
2397 printf_filtered (const char *format
, ...)
2401 va_start (args
, format
);
2402 vfprintf_filtered (gdb_stdout
, format
, args
);
2408 printf_unfiltered (const char *format
, ...)
2412 va_start (args
, format
);
2413 vfprintf_unfiltered (gdb_stdout
, format
, args
);
2417 /* Like printf_filtered, but prints it's result indented.
2418 Called as printfi_filtered (spaces, format, ...); */
2421 printfi_filtered (int spaces
, const char *format
, ...)
2425 va_start (args
, format
);
2426 print_spaces_filtered (spaces
, gdb_stdout
);
2427 vfprintf_filtered (gdb_stdout
, format
, args
);
2431 /* Easy -- but watch out!
2433 This routine is *not* a replacement for puts()! puts() appends a newline.
2434 This one doesn't, and had better not! */
2437 puts_filtered (const char *string
)
2439 fputs_filtered (string
, gdb_stdout
);
2443 puts_unfiltered (const char *string
)
2445 fputs_unfiltered (string
, gdb_stdout
);
2448 /* Return a pointer to N spaces and a null. The pointer is good
2449 until the next call to here. */
2454 static char *spaces
= 0;
2455 static int max_spaces
= -1;
2461 spaces
= (char *) xmalloc (n
+ 1);
2462 for (t
= spaces
+ n
; t
!= spaces
;)
2468 return spaces
+ max_spaces
- n
;
2471 /* Print N spaces. */
2473 print_spaces_filtered (int n
, struct ui_file
*stream
)
2475 fputs_filtered (n_spaces (n
), stream
);
2478 /* C++/ObjC demangler stuff. */
2480 /* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language
2481 LANG, using demangling args ARG_MODE, and print it filtered to STREAM.
2482 If the name is not mangled, or the language for the name is unknown, or
2483 demangling is off, the name is printed in its "raw" form. */
2486 fprintf_symbol_filtered (struct ui_file
*stream
, const char *name
,
2487 enum language lang
, int arg_mode
)
2493 /* If user wants to see raw output, no problem. */
2496 fputs_filtered (name
, stream
);
2500 demangled
= language_demangle (language_def (lang
), name
, arg_mode
);
2501 fputs_filtered (demangled
? demangled
: name
, stream
);
2502 if (demangled
!= NULL
)
2510 /* Do a strcmp() type operation on STRING1 and STRING2, ignoring any
2511 differences in whitespace. Returns 0 if they match, non-zero if they
2512 don't (slightly different than strcmp()'s range of return values).
2514 As an extra hack, string1=="FOO(ARGS)" matches string2=="FOO".
2515 This "feature" is useful when searching for matching C++ function names
2516 (such as if the user types 'break FOO', where FOO is a mangled C++
2520 strcmp_iw (const char *string1
, const char *string2
)
2522 while ((*string1
!= '\0') && (*string2
!= '\0'))
2524 while (isspace (*string1
))
2528 while (isspace (*string2
))
2532 if (case_sensitivity
== case_sensitive_on
&& *string1
!= *string2
)
2534 if (case_sensitivity
== case_sensitive_off
2535 && (tolower ((unsigned char) *string1
)
2536 != tolower ((unsigned char) *string2
)))
2538 if (*string1
!= '\0')
2544 return (*string1
!= '\0' && *string1
!= '(') || (*string2
!= '\0');
2547 /* This is like strcmp except that it ignores whitespace and treats
2548 '(' as the first non-NULL character in terms of ordering. Like
2549 strcmp (and unlike strcmp_iw), it returns negative if STRING1 <
2550 STRING2, 0 if STRING2 = STRING2, and positive if STRING1 > STRING2
2551 according to that ordering.
2553 If a list is sorted according to this function and if you want to
2554 find names in the list that match some fixed NAME according to
2555 strcmp_iw(LIST_ELT, NAME), then the place to start looking is right
2556 where this function would put NAME.
2558 This function must be neutral to the CASE_SENSITIVITY setting as the user
2559 may choose it during later lookup. Therefore this function always sorts
2560 primarily case-insensitively and secondarily case-sensitively.
2562 Here are some examples of why using strcmp to sort is a bad idea:
2566 Say your partial symtab contains: "foo<char *>", "goo". Then, if
2567 we try to do a search for "foo<char*>", strcmp will locate this
2568 after "foo<char *>" and before "goo". Then lookup_partial_symbol
2569 will start looking at strings beginning with "goo", and will never
2570 see the correct match of "foo<char *>".
2572 Parenthesis example:
2574 In practice, this is less like to be an issue, but I'll give it a
2575 shot. Let's assume that '$' is a legitimate character to occur in
2576 symbols. (Which may well even be the case on some systems.) Then
2577 say that the partial symbol table contains "foo$" and "foo(int)".
2578 strcmp will put them in this order, since '$' < '('. Now, if the
2579 user searches for "foo", then strcmp will sort "foo" before "foo$".
2580 Then lookup_partial_symbol will notice that strcmp_iw("foo$",
2581 "foo") is false, so it won't proceed to the actual match of
2582 "foo(int)" with "foo". */
2585 strcmp_iw_ordered (const char *string1
, const char *string2
)
2587 const char *saved_string1
= string1
, *saved_string2
= string2
;
2588 enum case_sensitivity case_pass
= case_sensitive_off
;
2592 /* C1 and C2 are valid only if *string1 != '\0' && *string2 != '\0'.
2593 Provide stub characters if we are already at the end of one of the
2595 char c1
= 'X', c2
= 'X';
2597 while (*string1
!= '\0' && *string2
!= '\0')
2599 while (isspace (*string1
))
2601 while (isspace (*string2
))
2606 case case_sensitive_off
:
2607 c1
= tolower ((unsigned char) *string1
);
2608 c2
= tolower ((unsigned char) *string2
);
2610 case case_sensitive_on
:
2618 if (*string1
!= '\0')
2627 /* Characters are non-equal unless they're both '\0'; we want to
2628 make sure we get the comparison right according to our
2629 comparison in the cases where one of them is '\0' or '('. */
2631 if (*string2
== '\0')
2636 if (*string2
== '\0')
2641 if (*string2
== '\0' || *string2
== '(')
2650 if (case_pass
== case_sensitive_on
)
2653 /* Otherwise the strings were equal in case insensitive way, make
2654 a more fine grained comparison in a case sensitive way. */
2656 case_pass
= case_sensitive_on
;
2657 string1
= saved_string1
;
2658 string2
= saved_string2
;
2662 /* A simple comparison function with opposite semantics to strcmp. */
2665 streq (const char *lhs
, const char *rhs
)
2667 return !strcmp (lhs
, rhs
);
2673 ** Answer whether string_to_compare is a full or partial match to
2674 ** template_string. The partial match must be in sequence starting
2678 subset_compare (char *string_to_compare
, char *template_string
)
2682 if (template_string
!= (char *) NULL
&& string_to_compare
!= (char *) NULL
2683 && strlen (string_to_compare
) <= strlen (template_string
))
2686 (template_string
, string_to_compare
, strlen (string_to_compare
)) == 0);
2693 pagination_on_command (char *arg
, int from_tty
)
2695 pagination_enabled
= 1;
2699 pagination_off_command (char *arg
, int from_tty
)
2701 pagination_enabled
= 0;
2705 show_debug_timestamp (struct ui_file
*file
, int from_tty
,
2706 struct cmd_list_element
*c
, const char *value
)
2708 fprintf_filtered (file
, _("Timestamping debugging messages is %s.\n"),
2714 initialize_utils (void)
2716 add_setshow_uinteger_cmd ("width", class_support
, &chars_per_line
, _("\
2717 Set number of characters where GDB should wrap lines of its output."), _("\
2718 Show number of characters where GDB should wrap lines of its output."), _("\
2719 This affects where GDB wraps its output to fit the screen width.\n\
2720 Setting this to \"unlimited\" or zero prevents GDB from wrapping its output."),
2722 show_chars_per_line
,
2723 &setlist
, &showlist
);
2725 add_setshow_uinteger_cmd ("height", class_support
, &lines_per_page
, _("\
2726 Set number of lines in a page for GDB output pagination."), _("\
2727 Show number of lines in a page for GDB output pagination."), _("\
2728 This affects the number of lines after which GDB will pause\n\
2729 its output and ask you whether to continue.\n\
2730 Setting this to \"unlimited\" or zero causes GDB never pause during output."),
2732 show_lines_per_page
,
2733 &setlist
, &showlist
);
2737 add_setshow_boolean_cmd ("pagination", class_support
,
2738 &pagination_enabled
, _("\
2739 Set state of GDB output pagination."), _("\
2740 Show state of GDB output pagination."), _("\
2741 When pagination is ON, GDB pauses at end of each screenful of\n\
2742 its output and asks you whether to continue.\n\
2743 Turning pagination off is an alternative to \"set height unlimited\"."),
2745 show_pagination_enabled
,
2746 &setlist
, &showlist
);
2750 add_com ("am", class_support
, pagination_on_command
,
2751 _("Enable pagination"));
2752 add_com ("sm", class_support
, pagination_off_command
,
2753 _("Disable pagination"));
2756 add_setshow_boolean_cmd ("sevenbit-strings", class_support
,
2757 &sevenbit_strings
, _("\
2758 Set printing of 8-bit characters in strings as \\nnn."), _("\
2759 Show printing of 8-bit characters in strings as \\nnn."), NULL
,
2761 show_sevenbit_strings
,
2762 &setprintlist
, &showprintlist
);
2764 add_setshow_boolean_cmd ("timestamp", class_maintenance
,
2765 &debug_timestamp
, _("\
2766 Set timestamping of debugging messages."), _("\
2767 Show timestamping of debugging messages."), _("\
2768 When set, debugging messages will be marked with seconds and microseconds."),
2770 show_debug_timestamp
,
2771 &setdebuglist
, &showdebuglist
);
2775 paddress (struct gdbarch
*gdbarch
, CORE_ADDR addr
)
2777 /* Truncate address to the size of a target address, avoiding shifts
2778 larger or equal than the width of a CORE_ADDR. The local
2779 variable ADDR_BIT stops the compiler reporting a shift overflow
2780 when it won't occur. */
2781 /* NOTE: This assumes that the significant address information is
2782 kept in the least significant bits of ADDR - the upper bits were
2783 either zero or sign extended. Should gdbarch_address_to_pointer or
2784 some ADDRESS_TO_PRINTABLE() be used to do the conversion? */
2786 int addr_bit
= gdbarch_addr_bit (gdbarch
);
2788 if (addr_bit
< (sizeof (CORE_ADDR
) * HOST_CHAR_BIT
))
2789 addr
&= ((CORE_ADDR
) 1 << addr_bit
) - 1;
2790 return hex_string (addr
);
2793 /* This function is described in "defs.h". */
2796 print_core_address (struct gdbarch
*gdbarch
, CORE_ADDR address
)
2798 int addr_bit
= gdbarch_addr_bit (gdbarch
);
2800 if (addr_bit
< (sizeof (CORE_ADDR
) * HOST_CHAR_BIT
))
2801 address
&= ((CORE_ADDR
) 1 << addr_bit
) - 1;
2803 /* FIXME: cagney/2002-05-03: Need local_address_string() function
2804 that returns the language localized string formatted to a width
2805 based on gdbarch_addr_bit. */
2807 return hex_string_custom (address
, 8);
2809 return hex_string_custom (address
, 16);
2812 /* Callback hash_f for htab_create_alloc or htab_create_alloc_ex. */
2815 core_addr_hash (const void *ap
)
2817 const CORE_ADDR
*addrp
= ap
;
2822 /* Callback eq_f for htab_create_alloc or htab_create_alloc_ex. */
2825 core_addr_eq (const void *ap
, const void *bp
)
2827 const CORE_ADDR
*addr_ap
= ap
;
2828 const CORE_ADDR
*addr_bp
= bp
;
2830 return *addr_ap
== *addr_bp
;
2833 /* Convert a string back into a CORE_ADDR. */
2835 string_to_core_addr (const char *my_string
)
2839 if (my_string
[0] == '0' && tolower (my_string
[1]) == 'x')
2841 /* Assume that it is in hex. */
2844 for (i
= 2; my_string
[i
] != '\0'; i
++)
2846 if (isdigit (my_string
[i
]))
2847 addr
= (my_string
[i
] - '0') + (addr
* 16);
2848 else if (isxdigit (my_string
[i
]))
2849 addr
= (tolower (my_string
[i
]) - 'a' + 0xa) + (addr
* 16);
2851 error (_("invalid hex \"%s\""), my_string
);
2856 /* Assume that it is in decimal. */
2859 for (i
= 0; my_string
[i
] != '\0'; i
++)
2861 if (isdigit (my_string
[i
]))
2862 addr
= (my_string
[i
] - '0') + (addr
* 10);
2864 error (_("invalid decimal \"%s\""), my_string
);
2872 gdb_realpath (const char *filename
)
2874 /* Method 1: The system has a compile time upper bound on a filename
2875 path. Use that and realpath() to canonicalize the name. This is
2876 the most common case. Note that, if there isn't a compile time
2877 upper bound, you want to avoid realpath() at all costs. */
2878 #if defined (HAVE_REALPATH) && defined (PATH_MAX)
2881 const char *rp
= realpath (filename
, buf
);
2885 return xstrdup (rp
);
2887 #endif /* HAVE_REALPATH */
2889 /* Method 2: The host system (i.e., GNU) has the function
2890 canonicalize_file_name() which malloc's a chunk of memory and
2891 returns that, use that. */
2892 #if defined(HAVE_CANONICALIZE_FILE_NAME)
2894 char *rp
= canonicalize_file_name (filename
);
2897 return xstrdup (filename
);
2903 /* FIXME: cagney/2002-11-13:
2905 Method 2a: Use realpath() with a NULL buffer. Some systems, due
2906 to the problems described in method 3, have modified their
2907 realpath() implementation so that it will allocate a buffer when
2908 NULL is passed in. Before this can be used, though, some sort of
2909 configure time test would need to be added. Otherwize the code
2910 will likely core dump. */
2912 /* Method 3: Now we're getting desperate! The system doesn't have a
2913 compile time buffer size and no alternative function. Query the
2914 OS, using pathconf(), for the buffer limit. Care is needed
2915 though, some systems do not limit PATH_MAX (return -1 for
2916 pathconf()) making it impossible to pass a correctly sized buffer
2917 to realpath() (it could always overflow). On those systems, we
2919 #if defined (HAVE_REALPATH) && defined (_PC_PATH_MAX) && defined(HAVE_ALLOCA)
2921 /* Find out the max path size. */
2922 long path_max
= pathconf ("/", _PC_PATH_MAX
);
2926 /* PATH_MAX is bounded. */
2927 char *buf
= alloca (path_max
);
2928 char *rp
= realpath (filename
, buf
);
2930 return xstrdup (rp
? rp
: filename
);
2935 /* The MS Windows method. If we don't have realpath, we assume we
2936 don't have symlinks and just canonicalize to a Windows absolute
2937 path. GetFullPath converts ../ and ./ in relative paths to
2938 absolute paths, filling in current drive if one is not given
2939 or using the current directory of a specified drive (eg, "E:foo").
2940 It also converts all forward slashes to back slashes. */
2941 /* The file system is case-insensitive but case-preserving.
2942 So we do not lowercase the path. Otherwise, we might not
2943 be able to display the original casing in a given path. */
2944 #if defined (_WIN32)
2947 DWORD len
= GetFullPathName (filename
, MAX_PATH
, buf
, NULL
);
2949 if (len
> 0 && len
< MAX_PATH
)
2950 return xstrdup (buf
);
2954 /* This system is a lost cause, just dup the buffer. */
2955 return xstrdup (filename
);
2958 /* Return a copy of FILENAME, with its directory prefix canonicalized
2962 gdb_realpath_keepfile (const char *filename
)
2964 const char *base_name
= lbasename (filename
);
2969 /* Extract the basename of filename, and return immediately
2970 a copy of filename if it does not contain any directory prefix. */
2971 if (base_name
== filename
)
2972 return xstrdup (filename
);
2974 dir_name
= alloca ((size_t) (base_name
- filename
+ 2));
2975 /* Allocate enough space to store the dir_name + plus one extra
2976 character sometimes needed under Windows (see below), and
2977 then the closing \000 character. */
2978 strncpy (dir_name
, filename
, base_name
- filename
);
2979 dir_name
[base_name
- filename
] = '\000';
2981 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
2982 /* We need to be careful when filename is of the form 'd:foo', which
2983 is equivalent of d:./foo, which is totally different from d:/foo. */
2984 if (strlen (dir_name
) == 2 && isalpha (dir_name
[0]) && dir_name
[1] == ':')
2987 dir_name
[3] = '\000';
2991 /* Canonicalize the directory prefix, and build the resulting
2992 filename. If the dirname realpath already contains an ending
2993 directory separator, avoid doubling it. */
2994 real_path
= gdb_realpath (dir_name
);
2995 if (IS_DIR_SEPARATOR (real_path
[strlen (real_path
) - 1]))
2996 result
= concat (real_path
, base_name
, (char *) NULL
);
2998 result
= concat (real_path
, SLASH_STRING
, base_name
, (char *) NULL
);
3004 /* Return PATH in absolute form, performing tilde-expansion if necessary.
3005 PATH cannot be NULL or the empty string.
3006 This does not resolve symlinks however, use gdb_realpath for that.
3007 Space for the result is allocated with malloc.
3008 If the path is already absolute, it is strdup'd.
3009 If there is a problem computing the absolute path, the path is returned
3010 unchanged (still strdup'd). */
3013 gdb_abspath (const char *path
)
3015 gdb_assert (path
!= NULL
&& path
[0] != '\0');
3018 return tilde_expand (path
);
3020 if (IS_ABSOLUTE_PATH (path
))
3021 return xstrdup (path
);
3023 /* Beware the // my son, the Emacs barfs, the botch that catch... */
3024 return concat (current_directory
,
3025 IS_DIR_SEPARATOR (current_directory
[strlen (current_directory
) - 1])
3026 ? "" : SLASH_STRING
,
3027 path
, (char *) NULL
);
3031 align_up (ULONGEST v
, int n
)
3033 /* Check that N is really a power of two. */
3034 gdb_assert (n
&& (n
& (n
-1)) == 0);
3035 return (v
+ n
- 1) & -n
;
3039 align_down (ULONGEST v
, int n
)
3041 /* Check that N is really a power of two. */
3042 gdb_assert (n
&& (n
& (n
-1)) == 0);
3049 gdb_sign_extend (LONGEST value
, int bit
)
3051 gdb_assert (bit
>= 1 && bit
<= 8 * sizeof (LONGEST
));
3053 if (((value
>> (bit
- 1)) & 1) != 0)
3055 LONGEST signbit
= ((LONGEST
) 1) << (bit
- 1);
3057 value
= (value
^ signbit
) - signbit
;
3063 /* Allocation function for the libiberty hash table which uses an
3064 obstack. The obstack is passed as DATA. */
3067 hashtab_obstack_allocate (void *data
, size_t size
, size_t count
)
3069 unsigned int total
= size
* count
;
3070 void *ptr
= obstack_alloc ((struct obstack
*) data
, total
);
3072 memset (ptr
, 0, total
);
3076 /* Trivial deallocation function for the libiberty splay tree and hash
3077 table - don't deallocate anything. Rely on later deletion of the
3078 obstack. DATA will be the obstack, although it is not needed
3082 dummy_obstack_deallocate (void *object
, void *data
)
3087 /* The bit offset of the highest byte in a ULONGEST, for overflow
3090 #define HIGH_BYTE_POSN ((sizeof (ULONGEST) - 1) * HOST_CHAR_BIT)
3092 /* True (non-zero) iff DIGIT is a valid digit in radix BASE,
3093 where 2 <= BASE <= 36. */
3096 is_digit_in_base (unsigned char digit
, int base
)
3098 if (!isalnum (digit
))
3101 return (isdigit (digit
) && digit
< base
+ '0');
3103 return (isdigit (digit
) || tolower (digit
) < base
- 10 + 'a');
3107 digit_to_int (unsigned char c
)
3112 return tolower (c
) - 'a' + 10;
3115 /* As for strtoul, but for ULONGEST results. */
3118 strtoulst (const char *num
, const char **trailer
, int base
)
3120 unsigned int high_part
;
3125 /* Skip leading whitespace. */
3126 while (isspace (num
[i
]))
3129 /* Handle prefixes. */
3132 else if (num
[i
] == '-')
3138 if (base
== 0 || base
== 16)
3140 if (num
[i
] == '0' && (num
[i
+ 1] == 'x' || num
[i
+ 1] == 'X'))
3148 if (base
== 0 && num
[i
] == '0')
3154 if (base
< 2 || base
> 36)
3160 result
= high_part
= 0;
3161 for (; is_digit_in_base (num
[i
], base
); i
+= 1)
3163 result
= result
* base
+ digit_to_int (num
[i
]);
3164 high_part
= high_part
* base
+ (unsigned int) (result
>> HIGH_BYTE_POSN
);
3165 result
&= ((ULONGEST
) 1 << HIGH_BYTE_POSN
) - 1;
3166 if (high_part
> 0xff)
3169 result
= ~ (ULONGEST
) 0;
3176 if (trailer
!= NULL
)
3179 result
= result
+ ((ULONGEST
) high_part
<< HIGH_BYTE_POSN
);
3186 /* Simple, portable version of dirname that does not modify its
3190 ldirname (const char *filename
)
3192 const char *base
= lbasename (filename
);
3195 while (base
> filename
&& IS_DIR_SEPARATOR (base
[-1]))
3198 if (base
== filename
)
3201 dirname
= xmalloc (base
- filename
+ 2);
3202 memcpy (dirname
, filename
, base
- filename
);
3204 /* On DOS based file systems, convert "d:foo" to "d:.", so that we
3205 create "d:./bar" later instead of the (different) "d:/bar". */
3206 if (base
- filename
== 2 && IS_ABSOLUTE_PATH (base
)
3207 && !IS_DIR_SEPARATOR (filename
[0]))
3208 dirname
[base
++ - filename
] = '.';
3210 dirname
[base
- filename
] = '\0';
3214 /* Call libiberty's buildargv, and return the result.
3215 If buildargv fails due to out-of-memory, call nomem.
3216 Therefore, the returned value is guaranteed to be non-NULL,
3217 unless the parameter itself is NULL. */
3220 gdb_buildargv (const char *s
)
3222 char **argv
= buildargv (s
);
3224 if (s
!= NULL
&& argv
== NULL
)
3230 compare_positive_ints (const void *ap
, const void *bp
)
3232 /* Because we know we're comparing two ints which are positive,
3233 there's no danger of overflow here. */
3234 return * (int *) ap
- * (int *) bp
;
3237 /* String compare function for qsort. */
3240 compare_strings (const void *arg1
, const void *arg2
)
3242 const char **s1
= (const char **) arg1
;
3243 const char **s2
= (const char **) arg2
;
3245 return strcmp (*s1
, *s2
);
3248 #define AMBIGUOUS_MESS1 ".\nMatching formats:"
3249 #define AMBIGUOUS_MESS2 \
3250 ".\nUse \"set gnutarget format-name\" to specify the format."
3253 gdb_bfd_errmsg (bfd_error_type error_tag
, char **matching
)
3259 /* Check if errmsg just need simple return. */
3260 if (error_tag
!= bfd_error_file_ambiguously_recognized
|| matching
== NULL
)
3261 return bfd_errmsg (error_tag
);
3263 ret_len
= strlen (bfd_errmsg (error_tag
)) + strlen (AMBIGUOUS_MESS1
)
3264 + strlen (AMBIGUOUS_MESS2
);
3265 for (p
= matching
; *p
; p
++)
3266 ret_len
+= strlen (*p
) + 1;
3267 ret
= xmalloc (ret_len
+ 1);
3269 make_cleanup (xfree
, ret
);
3271 strcpy (retp
, bfd_errmsg (error_tag
));
3272 retp
+= strlen (retp
);
3274 strcpy (retp
, AMBIGUOUS_MESS1
);
3275 retp
+= strlen (retp
);
3277 for (p
= matching
; *p
; p
++)
3279 sprintf (retp
, " %s", *p
);
3280 retp
+= strlen (retp
);
3284 strcpy (retp
, AMBIGUOUS_MESS2
);
3289 /* Return ARGS parsed as a valid pid, or throw an error. */
3292 parse_pid_to_attach (const char *args
)
3298 error_no_arg (_("process-id to attach"));
3300 dummy
= (char *) args
;
3301 pid
= strtoul (args
, &dummy
, 0);
3302 /* Some targets don't set errno on errors, grrr! */
3303 if ((pid
== 0 && dummy
== args
) || dummy
!= &args
[strlen (args
)])
3304 error (_("Illegal process-id: %s."), args
);
3309 /* Helper for make_bpstat_clear_actions_cleanup. */
3312 do_bpstat_clear_actions_cleanup (void *unused
)
3314 bpstat_clear_actions ();
3317 /* Call bpstat_clear_actions for the case an exception is throw. You should
3318 discard_cleanups if no exception is caught. */
3321 make_bpstat_clear_actions_cleanup (void)
3323 return make_cleanup (do_bpstat_clear_actions_cleanup
, NULL
);
3326 /* Check for GCC >= 4.x according to the symtab->producer string. Return minor
3327 version (x) of 4.x in such case. If it is not GCC or it is GCC older than
3328 4.x return -1. If it is GCC 5.x or higher return INT_MAX. */
3331 producer_is_gcc_ge_4 (const char *producer
)
3336 if (producer
== NULL
)
3338 /* For unknown compilers expect their behavior is not compliant. For GCC
3339 this case can also happen for -gdwarf-4 type units supported since
3345 /* Skip any identifier after "GNU " - such as "C++" or "Java". */
3347 if (strncmp (producer
, "GNU ", strlen ("GNU ")) != 0)
3349 /* For non-GCC compilers expect their behavior is not compliant. */
3353 cs
= &producer
[strlen ("GNU ")];
3354 while (*cs
&& !isdigit (*cs
))
3356 if (sscanf (cs
, "%d.%d", &major
, &minor
) != 2)
3358 /* Not recognized as GCC. */
3370 /* Helper for make_cleanup_free_char_ptr_vec. */
3373 do_free_char_ptr_vec (void *arg
)
3375 VEC (char_ptr
) *char_ptr_vec
= arg
;
3377 free_char_ptr_vec (char_ptr_vec
);
3380 /* Make cleanup handler calling xfree for each element of CHAR_PTR_VEC and
3381 final VEC_free for CHAR_PTR_VEC itself.
3383 You must not modify CHAR_PTR_VEC after this cleanup registration as the
3384 CHAR_PTR_VEC base address may change on its updates. Contrary to VEC_free
3385 this function does not (cannot) clear the pointer. */
3388 make_cleanup_free_char_ptr_vec (VEC (char_ptr
) *char_ptr_vec
)
3390 return make_cleanup (do_free_char_ptr_vec
, char_ptr_vec
);
3393 /* Substitute all occurences of string FROM by string TO in *STRINGP. *STRINGP
3394 must come from xrealloc-compatible allocator and it may be updated. FROM
3395 needs to be delimited by IS_DIR_SEPARATOR or DIRNAME_SEPARATOR (or be
3396 located at the start or end of *STRINGP. */
3399 substitute_path_component (char **stringp
, const char *from
, const char *to
)
3401 char *string
= *stringp
, *s
;
3402 const size_t from_len
= strlen (from
);
3403 const size_t to_len
= strlen (to
);
3407 s
= strstr (s
, from
);
3411 if ((s
== string
|| IS_DIR_SEPARATOR (s
[-1])
3412 || s
[-1] == DIRNAME_SEPARATOR
)
3413 && (s
[from_len
] == '\0' || IS_DIR_SEPARATOR (s
[from_len
])
3414 || s
[from_len
] == DIRNAME_SEPARATOR
))
3418 string_new
= xrealloc (string
, (strlen (string
) + to_len
+ 1));
3420 /* Relocate the current S pointer. */
3421 s
= s
- string
+ string_new
;
3422 string
= string_new
;
3424 /* Replace from by to. */
3425 memmove (&s
[to_len
], &s
[from_len
], strlen (&s
[from_len
]) + 1);
3426 memcpy (s
, to
, to_len
);
3441 /* SIGALRM handler for waitpid_with_timeout. */
3444 sigalrm_handler (int signo
)
3446 /* Nothing to do. */
3451 /* Wrapper to wait for child PID to die with TIMEOUT.
3452 TIMEOUT is the time to stop waiting in seconds.
3453 If TIMEOUT is zero, pass WNOHANG to waitpid.
3454 Returns PID if it was successfully waited for, otherwise -1.
3456 Timeouts are currently implemented with alarm and SIGALRM.
3457 If the host does not support them, this waits "forever".
3458 It would be odd though for a host to have waitpid and not SIGALRM. */
3461 wait_to_die_with_timeout (pid_t pid
, int *status
, int timeout
)
3463 pid_t waitpid_result
;
3465 gdb_assert (pid
> 0);
3466 gdb_assert (timeout
>= 0);
3471 #if defined (HAVE_SIGACTION) && defined (SA_RESTART)
3472 struct sigaction sa
, old_sa
;
3474 sa
.sa_handler
= sigalrm_handler
;
3475 sigemptyset (&sa
.sa_mask
);
3477 sigaction (SIGALRM
, &sa
, &old_sa
);
3481 ofunc
= (void (*)()) signal (SIGALRM
, sigalrm_handler
);
3487 waitpid_result
= waitpid (pid
, status
, 0);
3491 #if defined (HAVE_SIGACTION) && defined (SA_RESTART)
3492 sigaction (SIGALRM
, &old_sa
, NULL
);
3494 signal (SIGALRM
, ofunc
);
3499 waitpid_result
= waitpid (pid
, status
, WNOHANG
);
3501 if (waitpid_result
== pid
)
3507 #endif /* HAVE_WAITPID */
3509 /* Provide fnmatch compatible function for FNM_FILE_NAME matching of host files.
3510 Both FNM_FILE_NAME and FNM_NOESCAPE must be set in FLAGS.
3512 It handles correctly HAVE_DOS_BASED_FILE_SYSTEM and
3513 HAVE_CASE_INSENSITIVE_FILE_SYSTEM. */
3516 gdb_filename_fnmatch (const char *pattern
, const char *string
, int flags
)
3518 gdb_assert ((flags
& FNM_FILE_NAME
) != 0);
3520 /* It is unclear how '\' escaping vs. directory separator should coexist. */
3521 gdb_assert ((flags
& FNM_NOESCAPE
) != 0);
3523 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
3525 char *pattern_slash
, *string_slash
;
3527 /* Replace '\' by '/' in both strings. */
3529 pattern_slash
= alloca (strlen (pattern
) + 1);
3530 strcpy (pattern_slash
, pattern
);
3531 pattern
= pattern_slash
;
3532 for (; *pattern_slash
!= 0; pattern_slash
++)
3533 if (IS_DIR_SEPARATOR (*pattern_slash
))
3534 *pattern_slash
= '/';
3536 string_slash
= alloca (strlen (string
) + 1);
3537 strcpy (string_slash
, string
);
3538 string
= string_slash
;
3539 for (; *string_slash
!= 0; string_slash
++)
3540 if (IS_DIR_SEPARATOR (*string_slash
))
3541 *string_slash
= '/';
3543 #endif /* HAVE_DOS_BASED_FILE_SYSTEM */
3545 #ifdef HAVE_CASE_INSENSITIVE_FILE_SYSTEM
3546 flags
|= FNM_CASEFOLD
;
3547 #endif /* HAVE_CASE_INSENSITIVE_FILE_SYSTEM */
3549 return fnmatch (pattern
, string
, flags
);
3552 /* Provide a prototype to silence -Wmissing-prototypes. */
3553 extern initialize_file_ftype _initialize_utils
;
3556 _initialize_utils (void)
3558 add_internal_problem_command (&internal_error_problem
);
3559 add_internal_problem_command (&internal_warning_problem
);
3560 add_internal_problem_command (&demangler_warning_problem
);