1 /* General utility routines for GDB, the GNU debugger.
3 Copyright (C) 1986-2015 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"
24 #include "event-top.h"
25 #include "gdbthread.h"
28 #ifdef HAVE_SYS_RESOURCE_H
29 #include <sys/resource.h>
30 #endif /* HAVE_SYS_RESOURCE_H */
33 #include "tui/tui.h" /* For tui_get_command_dimension. */
41 #include "timeval-utils.h"
46 #include "gdb-demangle.h"
47 #include "expression.h"
51 #include "filenames.h"
53 #include "gdb_obstack.h"
59 #include "inferior.h" /* for signed_pointer_to_address */
61 #include "gdb_curses.h"
63 #include "readline/readline.h"
65 #include "gdb_sys_time.h"
68 #include "gdb_usleep.h"
70 #include "gdb_regex.h"
73 extern PTR
malloc (); /* ARI: PTR */
75 #if !HAVE_DECL_REALLOC
76 extern PTR
realloc (); /* ARI: PTR */
82 void (*deprecated_error_begin_hook
) (void);
84 /* Prototypes for local functions */
86 static void vfprintf_maybe_filtered (struct ui_file
*, const char *,
87 va_list, int) ATTRIBUTE_PRINTF (2, 0);
89 static void fputs_maybe_filtered (const char *, struct ui_file
*, int);
91 static void prompt_for_continue (void);
93 static void set_screen_size (void);
94 static void set_width (void);
96 /* Time spent in prompt_for_continue in the currently executing command
97 waiting for user to respond.
98 Initialized in make_command_stats_cleanup.
99 Modified in prompt_for_continue and defaulted_query.
100 Used in report_command_stats. */
102 static struct timeval prompt_for_continue_wait_time
;
104 /* A flag indicating whether to timestamp debugging messages. */
106 static int debug_timestamp
= 0;
108 /* Nonzero if we have job control. */
112 /* Nonzero means quit immediately if Control-C is typed now, rather
113 than waiting until QUIT is executed. Be careful in setting this;
114 code which executes with immediate_quit set has to be very careful
115 about being able to deal with being interrupted at any time. It is
116 almost always better to use QUIT; the only exception I can think of
117 is being able to quit out of a system call (using EINTR loses if
118 the SIGINT happens between the previous QUIT and the system call).
119 To immediately quit in the case in which a SIGINT happens between
120 the previous QUIT and setting immediate_quit (desirable anytime we
121 expect to block), call QUIT after setting immediate_quit. */
125 /* Nonzero means that strings with character values >0x7F should be printed
126 as octal escapes. Zero means just print the value (e.g. it's an
127 international character, and the terminal or window can cope.) */
129 int sevenbit_strings
= 0;
131 show_sevenbit_strings (struct ui_file
*file
, int from_tty
,
132 struct cmd_list_element
*c
, const char *value
)
134 fprintf_filtered (file
, _("Printing of 8-bit characters "
135 "in strings as \\nnn is %s.\n"),
139 /* String to be printed before warning messages, if any. */
141 char *warning_pre_print
= "\nwarning: ";
143 int pagination_enabled
= 1;
145 show_pagination_enabled (struct ui_file
*file
, int from_tty
,
146 struct cmd_list_element
*c
, const char *value
)
148 fprintf_filtered (file
, _("State of pagination is %s.\n"), value
);
152 /* Cleanup utilities.
154 These are not defined in cleanups.c (nor declared in cleanups.h)
155 because while they use the "cleanup API" they are not part of the
159 do_freeargv (void *arg
)
161 freeargv ((char **) arg
);
165 make_cleanup_freeargv (char **arg
)
167 return make_cleanup (do_freeargv
, arg
);
171 do_dyn_string_delete (void *arg
)
173 dyn_string_delete ((dyn_string_t
) arg
);
177 make_cleanup_dyn_string_delete (dyn_string_t arg
)
179 return make_cleanup (do_dyn_string_delete
, arg
);
183 do_bfd_close_cleanup (void *arg
)
189 make_cleanup_bfd_unref (bfd
*abfd
)
191 return make_cleanup (do_bfd_close_cleanup
, abfd
);
194 /* Helper function which does the work for make_cleanup_fclose. */
197 do_fclose_cleanup (void *arg
)
204 /* Return a new cleanup that closes FILE. */
207 make_cleanup_fclose (FILE *file
)
209 return make_cleanup (do_fclose_cleanup
, file
);
212 /* Helper function which does the work for make_cleanup_obstack_free. */
215 do_obstack_free (void *arg
)
217 struct obstack
*ob
= arg
;
219 obstack_free (ob
, NULL
);
222 /* Return a new cleanup that frees OBSTACK. */
225 make_cleanup_obstack_free (struct obstack
*obstack
)
227 return make_cleanup (do_obstack_free
, obstack
);
231 do_ui_file_delete (void *arg
)
233 ui_file_delete (arg
);
237 make_cleanup_ui_file_delete (struct ui_file
*arg
)
239 return make_cleanup (do_ui_file_delete
, arg
);
242 /* Helper function for make_cleanup_ui_out_redirect_pop. */
245 do_ui_out_redirect_pop (void *arg
)
247 struct ui_out
*uiout
= arg
;
249 if (ui_out_redirect (uiout
, NULL
) < 0)
250 warning (_("Cannot restore redirection of the current output protocol"));
253 /* Return a new cleanup that pops the last redirection by ui_out_redirect
254 with NULL parameter. */
257 make_cleanup_ui_out_redirect_pop (struct ui_out
*uiout
)
259 return make_cleanup (do_ui_out_redirect_pop
, uiout
);
263 do_free_section_addr_info (void *arg
)
265 free_section_addr_info (arg
);
269 make_cleanup_free_section_addr_info (struct section_addr_info
*addrs
)
271 return make_cleanup (do_free_section_addr_info
, addrs
);
274 struct restore_integer_closure
281 restore_integer (void *p
)
283 struct restore_integer_closure
*closure
= p
;
285 *(closure
->variable
) = closure
->value
;
288 /* Remember the current value of *VARIABLE and make it restored when
289 the cleanup is run. */
292 make_cleanup_restore_integer (int *variable
)
294 struct restore_integer_closure
*c
=
295 xmalloc (sizeof (struct restore_integer_closure
));
297 c
->variable
= variable
;
298 c
->value
= *variable
;
300 return make_cleanup_dtor (restore_integer
, (void *) c
, xfree
);
303 /* Remember the current value of *VARIABLE and make it restored when
304 the cleanup is run. */
307 make_cleanup_restore_uinteger (unsigned int *variable
)
309 return make_cleanup_restore_integer ((int *) variable
);
312 /* Helper for make_cleanup_unpush_target. */
315 do_unpush_target (void *arg
)
317 struct target_ops
*ops
= arg
;
322 /* Return a new cleanup that unpushes OPS. */
325 make_cleanup_unpush_target (struct target_ops
*ops
)
327 return make_cleanup (do_unpush_target
, ops
);
330 /* Helper for make_cleanup_htab_delete compile time checking the types. */
333 do_htab_delete_cleanup (void *htab_voidp
)
335 htab_t htab
= htab_voidp
;
340 /* Return a new cleanup that deletes HTAB. */
343 make_cleanup_htab_delete (htab_t htab
)
345 return make_cleanup (do_htab_delete_cleanup
, htab
);
348 struct restore_ui_file_closure
350 struct ui_file
**variable
;
351 struct ui_file
*value
;
355 do_restore_ui_file (void *p
)
357 struct restore_ui_file_closure
*closure
= p
;
359 *(closure
->variable
) = closure
->value
;
362 /* Remember the current value of *VARIABLE and make it restored when
363 the cleanup is run. */
366 make_cleanup_restore_ui_file (struct ui_file
**variable
)
368 struct restore_ui_file_closure
*c
= XNEW (struct restore_ui_file_closure
);
370 c
->variable
= variable
;
371 c
->value
= *variable
;
373 return make_cleanup_dtor (do_restore_ui_file
, (void *) c
, xfree
);
376 /* Helper for make_cleanup_value_free_to_mark. */
379 do_value_free_to_mark (void *value
)
381 value_free_to_mark ((struct value
*) value
);
384 /* Free all values allocated since MARK was obtained by value_mark
385 (except for those released) when the cleanup is run. */
388 make_cleanup_value_free_to_mark (struct value
*mark
)
390 return make_cleanup (do_value_free_to_mark
, mark
);
393 /* Helper for make_cleanup_value_free. */
396 do_value_free (void *value
)
404 make_cleanup_value_free (struct value
*value
)
406 return make_cleanup (do_value_free
, value
);
409 /* Helper for make_cleanup_free_so. */
412 do_free_so (void *arg
)
414 struct so_list
*so
= arg
;
419 /* Make cleanup handler calling free_so for SO. */
422 make_cleanup_free_so (struct so_list
*so
)
424 return make_cleanup (do_free_so
, so
);
427 /* Helper for make_cleanup_restore_current_language. */
430 do_restore_current_language (void *p
)
432 enum language saved_lang
= (enum language
) (uintptr_t) p
;
434 set_language (saved_lang
);
437 /* Remember the current value of CURRENT_LANGUAGE and make it restored when
438 the cleanup is run. */
441 make_cleanup_restore_current_language (void)
443 enum language saved_lang
= current_language
->la_language
;
445 return make_cleanup (do_restore_current_language
,
446 (void *) (uintptr_t) saved_lang
);
449 /* Helper function for make_cleanup_clear_parser_state. */
452 do_clear_parser_state (void *ptr
)
454 struct parser_state
**p
= (struct parser_state
**) ptr
;
459 /* Clean (i.e., set to NULL) the parser state variable P. */
462 make_cleanup_clear_parser_state (struct parser_state
**p
)
464 return make_cleanup (do_clear_parser_state
, (void *) p
);
467 /* This function is useful for cleanups.
471 old_chain = make_cleanup (free_current_contents, &foo);
473 to arrange to free the object thus allocated. */
476 free_current_contents (void *ptr
)
478 void **location
= ptr
;
480 if (location
== NULL
)
481 internal_error (__FILE__
, __LINE__
,
482 _("free_current_contents: NULL pointer"));
483 if (*location
!= NULL
)
492 /* Print a warning message. The first argument STRING is the warning
493 message, used as an fprintf format string, the second is the
494 va_list of arguments for that string. A warning is unfiltered (not
495 paginated) so that the user does not need to page through each
496 screen full of warnings when there are lots of them. */
499 vwarning (const char *string
, va_list args
)
501 if (deprecated_warning_hook
)
502 (*deprecated_warning_hook
) (string
, args
);
505 if (target_supports_terminal_ours ())
506 target_terminal_ours ();
507 if (filtered_printing_initialized ())
508 wrap_here (""); /* Force out any buffered output. */
509 gdb_flush (gdb_stdout
);
510 if (warning_pre_print
)
511 fputs_unfiltered (warning_pre_print
, gdb_stderr
);
512 vfprintf_unfiltered (gdb_stderr
, string
, args
);
513 fprintf_unfiltered (gdb_stderr
, "\n");
517 /* Print an error message and return to command level.
518 The first argument STRING is the error message, used as a fprintf string,
519 and the remaining args are passed as arguments to it. */
522 verror (const char *string
, va_list args
)
524 throw_verror (GENERIC_ERROR
, string
, args
);
528 error_stream (struct ui_file
*stream
)
530 char *message
= ui_file_xstrdup (stream
, NULL
);
532 make_cleanup (xfree
, message
);
533 error (("%s"), message
);
536 /* Emit a message and abort. */
538 static void ATTRIBUTE_NORETURN
539 abort_with_message (const char *msg
)
541 if (gdb_stderr
== NULL
)
544 fputs_unfiltered (msg
, gdb_stderr
);
546 abort (); /* NOTE: GDB has only three calls to abort(). */
549 /* Dump core trying to increase the core soft limit to hard limit first. */
554 #ifdef HAVE_SETRLIMIT
555 struct rlimit rlim
= { RLIM_INFINITY
, RLIM_INFINITY
};
557 setrlimit (RLIMIT_CORE
, &rlim
);
558 #endif /* HAVE_SETRLIMIT */
560 abort (); /* NOTE: GDB has only three calls to abort(). */
563 /* Check whether GDB will be able to dump core using the dump_core
564 function. Returns zero if GDB cannot or should not dump core.
565 If LIMIT_KIND is LIMIT_CUR the user's soft limit will be respected.
566 If LIMIT_KIND is LIMIT_MAX only the hard limit will be respected. */
569 can_dump_core (enum resource_limit_kind limit_kind
)
571 #ifdef HAVE_GETRLIMIT
574 /* Be quiet and assume we can dump if an error is returned. */
575 if (getrlimit (RLIMIT_CORE
, &rlim
) != 0)
581 if (rlim
.rlim_cur
== 0)
585 if (rlim
.rlim_max
== 0)
588 #endif /* HAVE_GETRLIMIT */
593 /* Print a warning that we cannot dump core. */
596 warn_cant_dump_core (const char *reason
)
598 fprintf_unfiltered (gdb_stderr
,
599 _("%s\nUnable to dump core, use `ulimit -c"
600 " unlimited' before executing GDB next time.\n"),
604 /* Check whether GDB will be able to dump core using the dump_core
605 function, and print a warning if we cannot. */
608 can_dump_core_warn (enum resource_limit_kind limit_kind
,
611 int core_dump_allowed
= can_dump_core (limit_kind
);
613 if (!core_dump_allowed
)
614 warn_cant_dump_core (reason
);
616 return core_dump_allowed
;
619 /* Allow the user to configure the debugger behavior with respect to
620 what to do when an internal problem is detected. */
622 const char internal_problem_ask
[] = "ask";
623 const char internal_problem_yes
[] = "yes";
624 const char internal_problem_no
[] = "no";
625 static const char *const internal_problem_modes
[] =
627 internal_problem_ask
,
628 internal_problem_yes
,
633 /* Print a message reporting an internal error/warning. Ask the user
634 if they want to continue, dump core, or just exit. Return
635 something to indicate a quit. */
637 struct internal_problem
640 int user_settable_should_quit
;
641 const char *should_quit
;
642 int user_settable_should_dump_core
;
643 const char *should_dump_core
;
646 /* Report a problem, internal to GDB, to the user. Once the problem
647 has been reported, and assuming GDB didn't quit, the caller can
648 either allow execution to resume or throw an error. */
650 static void ATTRIBUTE_PRINTF (4, 0)
651 internal_vproblem (struct internal_problem
*problem
,
652 const char *file
, int line
, const char *fmt
, va_list ap
)
658 struct cleanup
*cleanup
= make_cleanup (null_cleanup
, NULL
);
660 /* Don't allow infinite error/warning recursion. */
662 static char msg
[] = "Recursive internal problem.\n";
671 abort_with_message (msg
);
674 /* Newer GLIBC versions put the warn_unused_result attribute
675 on write, but this is one of those rare cases where
676 ignoring the return value is correct. Casting to (void)
677 does not fix this problem. This is the solution suggested
678 at http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25509. */
679 if (write (STDERR_FILENO
, msg
, sizeof (msg
)) != sizeof (msg
))
680 abort (); /* NOTE: GDB has only three calls to abort(). */
685 /* Create a string containing the full error/warning message. Need
686 to call query with this full string, as otherwize the reason
687 (error/warning) and question become separated. Format using a
688 style similar to a compiler error message. Include extra detail
689 so that the user knows that they are living on the edge. */
693 msg
= xstrvprintf (fmt
, ap
);
694 reason
= xstrprintf ("%s:%d: %s: %s\n"
695 "A problem internal to GDB has been detected,\n"
696 "further debugging may prove unreliable.",
697 file
, line
, problem
->name
, msg
);
699 make_cleanup (xfree
, reason
);
702 /* Fall back to abort_with_message if gdb_stderr is not set up. */
703 if (gdb_stderr
== NULL
)
705 fputs (reason
, stderr
);
706 abort_with_message ("\n");
709 /* Try to get the message out and at the start of a new line. */
710 if (target_supports_terminal_ours ())
711 target_terminal_ours ();
712 if (filtered_printing_initialized ())
715 /* Emit the message unless query will emit it below. */
716 if (problem
->should_quit
!= internal_problem_ask
718 || !filtered_printing_initialized ())
719 fprintf_unfiltered (gdb_stderr
, "%s\n", reason
);
721 if (problem
->should_quit
== internal_problem_ask
)
723 /* Default (yes/batch case) is to quit GDB. When in batch mode
724 this lessens the likelihood of GDB going into an infinite
726 if (!confirm
|| !filtered_printing_initialized ())
729 quit_p
= query (_("%s\nQuit this debugging session? "), reason
);
731 else if (problem
->should_quit
== internal_problem_yes
)
733 else if (problem
->should_quit
== internal_problem_no
)
736 internal_error (__FILE__
, __LINE__
, _("bad switch"));
738 fputs_unfiltered (_("\nThis is a bug, please report it."), gdb_stderr
);
739 if (REPORT_BUGS_TO
[0])
740 fprintf_unfiltered (gdb_stderr
, _(" For instructions, see:\n%s."),
742 fputs_unfiltered ("\n\n", gdb_stderr
);
744 if (problem
->should_dump_core
== internal_problem_ask
)
746 if (!can_dump_core_warn (LIMIT_MAX
, reason
))
748 else if (!filtered_printing_initialized ())
752 /* Default (yes/batch case) is to dump core. This leaves a GDB
753 `dropping' so that it is easier to see that something went
755 dump_core_p
= query (_("%s\nCreate a core file of GDB? "), reason
);
758 else if (problem
->should_dump_core
== internal_problem_yes
)
759 dump_core_p
= can_dump_core_warn (LIMIT_MAX
, reason
);
760 else if (problem
->should_dump_core
== internal_problem_no
)
763 internal_error (__FILE__
, __LINE__
, _("bad switch"));
776 #ifdef HAVE_WORKING_FORK
784 do_cleanups (cleanup
);
787 static struct internal_problem internal_error_problem
= {
788 "internal-error", 1, internal_problem_ask
, 1, internal_problem_ask
792 internal_verror (const char *file
, int line
, const char *fmt
, va_list ap
)
794 internal_vproblem (&internal_error_problem
, file
, line
, fmt
, ap
);
795 throw_quit (_("Command aborted."));
798 static struct internal_problem internal_warning_problem
= {
799 "internal-warning", 1, internal_problem_ask
, 1, internal_problem_ask
803 internal_vwarning (const char *file
, int line
, const char *fmt
, va_list ap
)
805 internal_vproblem (&internal_warning_problem
, file
, line
, fmt
, ap
);
808 static struct internal_problem demangler_warning_problem
= {
809 "demangler-warning", 1, internal_problem_ask
, 0, internal_problem_no
813 demangler_vwarning (const char *file
, int line
, const char *fmt
, va_list ap
)
815 internal_vproblem (&demangler_warning_problem
, file
, line
, fmt
, ap
);
819 demangler_warning (const char *file
, int line
, const char *string
, ...)
823 va_start (ap
, string
);
824 demangler_vwarning (file
, line
, string
, ap
);
828 /* Dummy functions to keep add_prefix_cmd happy. */
831 set_internal_problem_cmd (char *args
, int from_tty
)
836 show_internal_problem_cmd (char *args
, int from_tty
)
840 /* When GDB reports an internal problem (error or warning) it gives
841 the user the opportunity to quit GDB and/or create a core file of
842 the current debug session. This function registers a few commands
843 that make it possible to specify that GDB should always or never
844 quit or create a core file, without asking. The commands look
847 maint set PROBLEM-NAME quit ask|yes|no
848 maint show PROBLEM-NAME quit
849 maint set PROBLEM-NAME corefile ask|yes|no
850 maint show PROBLEM-NAME corefile
852 Where PROBLEM-NAME is currently "internal-error" or
853 "internal-warning". */
856 add_internal_problem_command (struct internal_problem
*problem
)
858 struct cmd_list_element
**set_cmd_list
;
859 struct cmd_list_element
**show_cmd_list
;
863 set_cmd_list
= xmalloc (sizeof (*set_cmd_list
));
864 show_cmd_list
= xmalloc (sizeof (*set_cmd_list
));
865 *set_cmd_list
= NULL
;
866 *show_cmd_list
= NULL
;
868 set_doc
= xstrprintf (_("Configure what GDB does when %s is detected."),
871 show_doc
= xstrprintf (_("Show what GDB does when %s is detected."),
874 add_prefix_cmd ((char*) problem
->name
,
875 class_maintenance
, set_internal_problem_cmd
, set_doc
,
877 concat ("maintenance set ", problem
->name
, " ",
879 0/*allow-unknown*/, &maintenance_set_cmdlist
);
881 add_prefix_cmd ((char*) problem
->name
,
882 class_maintenance
, show_internal_problem_cmd
, show_doc
,
884 concat ("maintenance show ", problem
->name
, " ",
886 0/*allow-unknown*/, &maintenance_show_cmdlist
);
888 if (problem
->user_settable_should_quit
)
890 set_doc
= xstrprintf (_("Set whether GDB should quit "
891 "when an %s is detected"),
893 show_doc
= xstrprintf (_("Show whether GDB will quit "
894 "when an %s is detected"),
896 add_setshow_enum_cmd ("quit", class_maintenance
,
897 internal_problem_modes
,
898 &problem
->should_quit
,
911 if (problem
->user_settable_should_dump_core
)
913 set_doc
= xstrprintf (_("Set whether GDB should create a core "
914 "file of GDB when %s is detected"),
916 show_doc
= xstrprintf (_("Show whether GDB will create a core "
917 "file of GDB when %s is detected"),
919 add_setshow_enum_cmd ("corefile", class_maintenance
,
920 internal_problem_modes
,
921 &problem
->should_dump_core
,
935 /* Return a newly allocated string, containing the PREFIX followed
936 by the system error message for errno (separated by a colon).
938 The result must be deallocated after use. */
941 perror_string (const char *prefix
)
946 err
= safe_strerror (errno
);
947 combined
= (char *) xmalloc (strlen (err
) + strlen (prefix
) + 3);
948 strcpy (combined
, prefix
);
949 strcat (combined
, ": ");
950 strcat (combined
, err
);
955 /* Print the system error message for errno, and also mention STRING
956 as the file name for which the error was encountered. Use ERRCODE
957 for the thrown exception. Then return to command level. */
960 throw_perror_with_name (enum errors errcode
, const char *string
)
964 combined
= perror_string (string
);
965 make_cleanup (xfree
, combined
);
967 /* I understand setting these is a matter of taste. Still, some people
968 may clear errno but not know about bfd_error. Doing this here is not
970 bfd_set_error (bfd_error_no_error
);
973 throw_error (errcode
, _("%s."), combined
);
976 /* See throw_perror_with_name, ERRCODE defaults here to GENERIC_ERROR. */
979 perror_with_name (const char *string
)
981 throw_perror_with_name (GENERIC_ERROR
, string
);
984 /* Same as perror_with_name except that it prints a warning instead
985 of throwing an error. */
988 perror_warning_with_name (const char *string
)
992 combined
= perror_string (string
);
993 warning (_("%s"), combined
);
997 /* Print the system error message for ERRCODE, and also mention STRING
998 as the file name for which the error was encountered. */
1001 print_sys_errmsg (const char *string
, int errcode
)
1006 err
= safe_strerror (errcode
);
1007 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
1008 strcpy (combined
, string
);
1009 strcat (combined
, ": ");
1010 strcat (combined
, err
);
1012 /* We want anything which was printed on stdout to come out first, before
1014 gdb_flush (gdb_stdout
);
1015 fprintf_unfiltered (gdb_stderr
, "%s.\n", combined
);
1018 /* Control C eventually causes this to be called, at a convenient time. */
1023 if (sync_quit_force_run
)
1025 sync_quit_force_run
= 0;
1026 quit_force (NULL
, stdin
== instream
);
1030 /* No steenking SIGINT will ever be coming our way when the
1031 program is resumed. Don't lie. */
1032 throw_quit ("Quit");
1035 /* If there is no terminal switching for this target, then we can't
1036 possibly get screwed by the lack of job control. */
1037 || !target_supports_terminal_ours ())
1038 throw_quit ("Quit");
1040 throw_quit ("Quit (expect signal SIGINT when the program is resumed)");
1049 if (check_quit_flag () || sync_quit_force_run
)
1051 if (deprecated_interactive_hook
)
1052 deprecated_interactive_hook ();
1053 target_check_pending_interrupt ();
1057 /* Called when a memory allocation fails, with the number of bytes of
1058 memory requested in SIZE. */
1061 malloc_failure (long size
)
1065 internal_error (__FILE__
, __LINE__
,
1066 _("virtual memory exhausted: can't allocate %ld bytes."),
1071 internal_error (__FILE__
, __LINE__
, _("virtual memory exhausted."));
1075 /* My replacement for the read system call.
1076 Used like `read' but keeps going if `read' returns too soon. */
1079 myread (int desc
, char *addr
, int len
)
1086 val
= read (desc
, addr
, len
);
1090 return orglen
- len
;
1098 print_spaces (int n
, struct ui_file
*file
)
1100 fputs_unfiltered (n_spaces (n
), file
);
1103 /* Print a host address. */
1106 gdb_print_host_address (const void *addr
, struct ui_file
*stream
)
1108 fprintf_filtered (stream
, "%s", host_address_to_string (addr
));
1114 make_hex_string (const gdb_byte
*data
, size_t length
)
1116 char *result
= xmalloc (length
* 2 + 1);
1121 for (i
= 0; i
< length
; ++i
)
1122 p
+= xsnprintf (p
, 3, "%02x", data
[i
]);
1129 /* A cleanup function that calls regfree. */
1132 do_regfree_cleanup (void *r
)
1137 /* Create a new cleanup that frees the compiled regular expression R. */
1140 make_regfree_cleanup (regex_t
*r
)
1142 return make_cleanup (do_regfree_cleanup
, r
);
1145 /* Return an xmalloc'd error message resulting from a regular
1146 expression compilation failure. */
1149 get_regcomp_error (int code
, regex_t
*rx
)
1151 size_t length
= regerror (code
, rx
, NULL
, 0);
1152 char *result
= xmalloc (length
);
1154 regerror (code
, rx
, result
, length
);
1158 /* Compile a regexp and throw an exception on error. This returns a
1159 cleanup to free the resulting pattern on success. RX must not be
1163 compile_rx_or_error (regex_t
*pattern
, const char *rx
, const char *message
)
1167 gdb_assert (rx
!= NULL
);
1169 code
= regcomp (pattern
, rx
, REG_NOSUB
);
1172 char *err
= get_regcomp_error (code
, pattern
);
1174 make_cleanup (xfree
, err
);
1175 error (("%s: %s"), message
, err
);
1178 return make_regfree_cleanup (pattern
);
1183 /* This function supports the query, nquery, and yquery functions.
1184 Ask user a y-or-n question and return 0 if answer is no, 1 if
1185 answer is yes, or default the answer to the specified default
1186 (for yquery or nquery). DEFCHAR may be 'y' or 'n' to provide a
1187 default answer, or '\0' for no default.
1188 CTLSTR is the control string and should end in "? ". It should
1189 not say how to answer, because we do that.
1190 ARGS are the arguments passed along with the CTLSTR argument to
1193 static int ATTRIBUTE_PRINTF (1, 0)
1194 defaulted_query (const char *ctlstr
, const char defchar
, va_list args
)
1199 char def_answer
, not_def_answer
;
1200 char *y_string
, *n_string
, *question
, *prompt
;
1201 /* Used to add duration we waited for user to respond to
1202 prompt_for_continue_wait_time. */
1203 struct timeval prompt_started
, prompt_ended
, prompt_delta
;
1205 /* Set up according to which answer is the default. */
1206 if (defchar
== '\0')
1210 not_def_answer
= 'N';
1214 else if (defchar
== 'y')
1218 not_def_answer
= 'N';
1226 not_def_answer
= 'Y';
1231 /* Automatically answer the default value if the user did not want
1232 prompts or the command was issued with the server prefix. */
1233 if (!confirm
|| server_command
)
1236 /* If input isn't coming from the user directly, just say what
1237 question we're asking, and then answer the default automatically. This
1238 way, important error messages don't get lost when talking to GDB
1240 if (! input_from_terminal_p ())
1243 vfprintf_filtered (gdb_stdout
, ctlstr
, args
);
1245 printf_filtered (_("(%s or %s) [answered %c; "
1246 "input not from terminal]\n"),
1247 y_string
, n_string
, def_answer
);
1248 gdb_flush (gdb_stdout
);
1253 if (deprecated_query_hook
)
1255 return deprecated_query_hook (ctlstr
, args
);
1258 /* Format the question outside of the loop, to avoid reusing args. */
1259 question
= xstrvprintf (ctlstr
, args
);
1260 prompt
= xstrprintf (_("%s%s(%s or %s) %s"),
1261 annotation_level
> 1 ? "\n\032\032pre-query\n" : "",
1262 question
, y_string
, n_string
,
1263 annotation_level
> 1 ? "\n\032\032query\n" : "");
1266 /* Used for calculating time spend waiting for user. */
1267 gettimeofday (&prompt_started
, NULL
);
1271 char *response
, answer
;
1273 gdb_flush (gdb_stdout
);
1274 response
= gdb_readline_wrapper (prompt
);
1276 if (response
== NULL
) /* C-d */
1278 printf_filtered ("EOF [assumed %c]\n", def_answer
);
1283 answer
= response
[0];
1288 /* Check answer. For the non-default, the user must specify
1289 the non-default explicitly. */
1290 if (answer
== not_def_answer
)
1292 retval
= !def_value
;
1295 /* Otherwise, if a default was specified, the user may either
1296 specify the required input or have it default by entering
1298 if (answer
== def_answer
1299 || (defchar
!= '\0' && answer
== '\0'))
1304 /* Invalid entries are not defaulted and require another selection. */
1305 printf_filtered (_("Please answer %s or %s.\n"),
1306 y_string
, n_string
);
1309 /* Add time spend in this routine to prompt_for_continue_wait_time. */
1310 gettimeofday (&prompt_ended
, NULL
);
1311 timeval_sub (&prompt_delta
, &prompt_ended
, &prompt_started
);
1312 timeval_add (&prompt_for_continue_wait_time
,
1313 &prompt_for_continue_wait_time
, &prompt_delta
);
1316 if (annotation_level
> 1)
1317 printf_filtered (("\n\032\032post-query\n"));
1322 /* Ask user a y-or-n question and return 0 if answer is no, 1 if
1323 answer is yes, or 0 if answer is defaulted.
1324 Takes three args which are given to printf to print the question.
1325 The first, a control string, should end in "? ".
1326 It should not say how to answer, because we do that. */
1329 nquery (const char *ctlstr
, ...)
1334 va_start (args
, ctlstr
);
1335 ret
= defaulted_query (ctlstr
, 'n', args
);
1340 /* Ask user a y-or-n question and return 0 if answer is no, 1 if
1341 answer is yes, or 1 if answer is defaulted.
1342 Takes three args which are given to printf to print the question.
1343 The first, a control string, should end in "? ".
1344 It should not say how to answer, because we do that. */
1347 yquery (const char *ctlstr
, ...)
1352 va_start (args
, ctlstr
);
1353 ret
= defaulted_query (ctlstr
, 'y', args
);
1358 /* Ask user a y-or-n question and return 1 iff answer is yes.
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 query (const char *ctlstr
, ...)
1369 va_start (args
, ctlstr
);
1370 ret
= defaulted_query (ctlstr
, '\0', args
);
1375 /* A helper for parse_escape that converts a host character to a
1376 target character. C is the host character. If conversion is
1377 possible, then the target character is stored in *TARGET_C and the
1378 function returns 1. Otherwise, the function returns 0. */
1381 host_char_to_target (struct gdbarch
*gdbarch
, int c
, int *target_c
)
1383 struct obstack host_data
;
1385 struct cleanup
*cleanups
;
1388 obstack_init (&host_data
);
1389 cleanups
= make_cleanup_obstack_free (&host_data
);
1391 convert_between_encodings (target_charset (gdbarch
), host_charset (),
1392 (gdb_byte
*) &the_char
, 1, 1,
1393 &host_data
, translit_none
);
1395 if (obstack_object_size (&host_data
) == 1)
1398 *target_c
= *(char *) obstack_base (&host_data
);
1401 do_cleanups (cleanups
);
1405 /* Parse a C escape sequence. STRING_PTR points to a variable
1406 containing a pointer to the string to parse. That pointer
1407 should point to the character after the \. That pointer
1408 is updated past the characters we use. The value of the
1409 escape sequence is returned.
1411 A negative value means the sequence \ newline was seen,
1412 which is supposed to be equivalent to nothing at all.
1414 If \ is followed by a null character, we return a negative
1415 value and leave the string pointer pointing at the null character.
1417 If \ is followed by 000, we return 0 and leave the string pointer
1418 after the zeros. A value of 0 does not mean end of string. */
1421 parse_escape (struct gdbarch
*gdbarch
, const char **string_ptr
)
1423 int target_char
= -2; /* Initialize to avoid GCC warnings. */
1424 int c
= *(*string_ptr
)++;
1443 int i
= host_hex_value (c
);
1448 if (isdigit (c
) && c
!= '8' && c
!= '9')
1452 i
+= host_hex_value (c
);
1488 if (!host_char_to_target (gdbarch
, c
, &target_char
))
1489 error (_("The escape sequence `\\%c' is equivalent to plain `%c',"
1490 " which has no equivalent\nin the `%s' character set."),
1491 c
, c
, target_charset (gdbarch
));
1495 /* Print the character C on STREAM as part of the contents of a literal
1496 string whose delimiter is QUOTER. Note that this routine should only
1497 be call for printing things which are independent of the language
1498 of the program being debugged.
1500 printchar will normally escape backslashes and instances of QUOTER. If
1501 QUOTER is 0, printchar won't escape backslashes or any quoting character.
1502 As a side effect, if you pass the backslash character as the QUOTER,
1503 printchar will escape backslashes as usual, but not any other quoting
1507 printchar (int c
, void (*do_fputs
) (const char *, struct ui_file
*),
1508 void (*do_fprintf
) (struct ui_file
*, const char *, ...)
1509 ATTRIBUTE_FPTR_PRINTF_2
, struct ui_file
*stream
, int quoter
)
1511 c
&= 0xFF; /* Avoid sign bit follies */
1513 if (c
< 0x20 || /* Low control chars */
1514 (c
>= 0x7F && c
< 0xA0) || /* DEL, High controls */
1515 (sevenbit_strings
&& c
>= 0x80))
1516 { /* high order bit set */
1520 do_fputs ("\\n", stream
);
1523 do_fputs ("\\b", stream
);
1526 do_fputs ("\\t", stream
);
1529 do_fputs ("\\f", stream
);
1532 do_fputs ("\\r", stream
);
1535 do_fputs ("\\e", stream
);
1538 do_fputs ("\\a", stream
);
1541 do_fprintf (stream
, "\\%.3o", (unsigned int) c
);
1547 if (quoter
!= 0 && (c
== '\\' || c
== quoter
))
1548 do_fputs ("\\", stream
);
1549 do_fprintf (stream
, "%c", c
);
1553 /* Print the character C on STREAM as part of the contents of a
1554 literal string whose delimiter is QUOTER. Note that these routines
1555 should only be call for printing things which are independent of
1556 the language of the program being debugged. */
1559 fputstr_filtered (const char *str
, int quoter
, struct ui_file
*stream
)
1562 printchar (*str
++, fputs_filtered
, fprintf_filtered
, stream
, quoter
);
1566 fputstr_unfiltered (const char *str
, int quoter
, struct ui_file
*stream
)
1569 printchar (*str
++, fputs_unfiltered
, fprintf_unfiltered
, stream
, quoter
);
1573 fputstrn_filtered (const char *str
, int n
, int quoter
,
1574 struct ui_file
*stream
)
1578 for (i
= 0; i
< n
; i
++)
1579 printchar (str
[i
], fputs_filtered
, fprintf_filtered
, stream
, quoter
);
1583 fputstrn_unfiltered (const char *str
, int n
, int quoter
,
1584 struct ui_file
*stream
)
1588 for (i
= 0; i
< n
; i
++)
1589 printchar (str
[i
], fputs_unfiltered
, fprintf_unfiltered
, stream
, quoter
);
1593 /* Number of lines per page or UINT_MAX if paging is disabled. */
1594 static unsigned int lines_per_page
;
1596 show_lines_per_page (struct ui_file
*file
, int from_tty
,
1597 struct cmd_list_element
*c
, const char *value
)
1599 fprintf_filtered (file
,
1600 _("Number of lines gdb thinks are in a page is %s.\n"),
1604 /* Number of chars per line or UINT_MAX if line folding is disabled. */
1605 static unsigned int chars_per_line
;
1607 show_chars_per_line (struct ui_file
*file
, int from_tty
,
1608 struct cmd_list_element
*c
, const char *value
)
1610 fprintf_filtered (file
,
1611 _("Number of characters gdb thinks "
1612 "are in a line is %s.\n"),
1616 /* Current count of lines printed on this page, chars on this line. */
1617 static unsigned int lines_printed
, chars_printed
;
1619 /* Buffer and start column of buffered text, for doing smarter word-
1620 wrapping. When someone calls wrap_here(), we start buffering output
1621 that comes through fputs_filtered(). If we see a newline, we just
1622 spit it out and forget about the wrap_here(). If we see another
1623 wrap_here(), we spit it out and remember the newer one. If we see
1624 the end of the line, we spit out a newline, the indent, and then
1625 the buffered output. */
1627 /* Malloc'd buffer with chars_per_line+2 bytes. Contains characters which
1628 are waiting to be output (they have already been counted in chars_printed).
1629 When wrap_buffer[0] is null, the buffer is empty. */
1630 static char *wrap_buffer
;
1632 /* Pointer in wrap_buffer to the next character to fill. */
1633 static char *wrap_pointer
;
1635 /* String to indent by if the wrap occurs. Must not be NULL if wrap_column
1637 static char *wrap_indent
;
1639 /* Column number on the screen where wrap_buffer begins, or 0 if wrapping
1640 is not in effect. */
1641 static int wrap_column
;
1644 /* Inialize the number of lines per page and chars per line. */
1647 init_page_info (void)
1651 lines_per_page
= UINT_MAX
;
1652 chars_per_line
= UINT_MAX
;
1656 if (!tui_get_command_dimension (&chars_per_line
, &lines_per_page
))
1661 #if defined(__GO32__)
1662 rows
= ScreenRows ();
1663 cols
= ScreenCols ();
1664 lines_per_page
= rows
;
1665 chars_per_line
= cols
;
1667 /* Make sure Readline has initialized its terminal settings. */
1668 rl_reset_terminal (NULL
);
1670 /* Get the screen size from Readline. */
1671 rl_get_screen_size (&rows
, &cols
);
1672 lines_per_page
= rows
;
1673 chars_per_line
= cols
;
1675 /* Readline should have fetched the termcap entry for us.
1676 Only try to use tgetnum function if rl_get_screen_size
1677 did not return a useful value. */
1678 if (((rows
<= 0) && (tgetnum ("li") < 0))
1679 /* Also disable paging if inside EMACS. */
1680 || getenv ("EMACS"))
1682 /* The number of lines per page is not mentioned in the terminal
1683 description or EMACS evironment variable is set. This probably
1684 means that paging is not useful, so disable paging. */
1685 lines_per_page
= UINT_MAX
;
1688 /* If the output is not a terminal, don't paginate it. */
1689 if (!ui_file_isatty (gdb_stdout
))
1690 lines_per_page
= UINT_MAX
;
1694 /* We handle SIGWINCH ourselves. */
1695 rl_catch_sigwinch
= 0;
1701 /* Return nonzero if filtered printing is initialized. */
1703 filtered_printing_initialized (void)
1705 return wrap_buffer
!= NULL
;
1708 /* Helper for make_cleanup_restore_page_info. */
1711 do_restore_page_info_cleanup (void *arg
)
1717 /* Provide cleanup for restoring the terminal size. */
1720 make_cleanup_restore_page_info (void)
1722 struct cleanup
*back_to
;
1724 back_to
= make_cleanup (do_restore_page_info_cleanup
, NULL
);
1725 make_cleanup_restore_uinteger (&lines_per_page
);
1726 make_cleanup_restore_uinteger (&chars_per_line
);
1731 /* Temporarily set BATCH_FLAG and the associated unlimited terminal size.
1732 Provide cleanup for restoring the original state. */
1735 set_batch_flag_and_make_cleanup_restore_page_info (void)
1737 struct cleanup
*back_to
= make_cleanup_restore_page_info ();
1739 make_cleanup_restore_integer (&batch_flag
);
1746 /* Set the screen size based on LINES_PER_PAGE and CHARS_PER_LINE. */
1749 set_screen_size (void)
1751 int rows
= lines_per_page
;
1752 int cols
= chars_per_line
;
1760 /* Update Readline's idea of the terminal size. */
1761 rl_set_screen_size (rows
, cols
);
1764 /* Reinitialize WRAP_BUFFER according to the current value of
1770 if (chars_per_line
== 0)
1775 wrap_buffer
= (char *) xmalloc (chars_per_line
+ 2);
1776 wrap_buffer
[0] = '\0';
1779 wrap_buffer
= (char *) xrealloc (wrap_buffer
, chars_per_line
+ 2);
1780 wrap_pointer
= wrap_buffer
; /* Start it at the beginning. */
1784 set_width_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
1791 set_height_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
1799 set_screen_width_and_height (int width
, int height
)
1801 lines_per_page
= height
;
1802 chars_per_line
= width
;
1808 /* Wait, so the user can read what's on the screen. Prompt the user
1809 to continue by pressing RETURN. */
1812 prompt_for_continue (void)
1815 char cont_prompt
[120];
1816 /* Used to add duration we waited for user to respond to
1817 prompt_for_continue_wait_time. */
1818 struct timeval prompt_started
, prompt_ended
, prompt_delta
;
1820 gettimeofday (&prompt_started
, NULL
);
1822 if (annotation_level
> 1)
1823 printf_unfiltered (("\n\032\032pre-prompt-for-continue\n"));
1825 strcpy (cont_prompt
,
1826 "---Type <return> to continue, or q <return> to quit---");
1827 if (annotation_level
> 1)
1828 strcat (cont_prompt
, "\n\032\032prompt-for-continue\n");
1830 /* We must do this *before* we call gdb_readline, else it will eventually
1831 call us -- thinking that we're trying to print beyond the end of the
1833 reinitialize_more_filter ();
1838 /* We'll need to handle input. */
1839 target_terminal_ours ();
1841 /* On a real operating system, the user can quit with SIGINT.
1844 'q' is provided on all systems so users don't have to change habits
1845 from system to system, and because telling them what to do in
1846 the prompt is more user-friendly than expecting them to think of
1848 /* Call readline, not gdb_readline, because GO32 readline handles control-C
1849 whereas control-C to gdb_readline will cause the user to get dumped
1851 ignore
= gdb_readline_wrapper (cont_prompt
);
1853 /* Add time spend in this routine to prompt_for_continue_wait_time. */
1854 gettimeofday (&prompt_ended
, NULL
);
1855 timeval_sub (&prompt_delta
, &prompt_ended
, &prompt_started
);
1856 timeval_add (&prompt_for_continue_wait_time
,
1857 &prompt_for_continue_wait_time
, &prompt_delta
);
1859 if (annotation_level
> 1)
1860 printf_unfiltered (("\n\032\032post-prompt-for-continue\n"));
1866 while (*p
== ' ' || *p
== '\t')
1874 /* Now we have to do this again, so that GDB will know that it doesn't
1875 need to save the ---Type <return>--- line at the top of the screen. */
1876 reinitialize_more_filter ();
1878 dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */
1881 /* Initalize timer to keep track of how long we waited for the user. */
1884 reset_prompt_for_continue_wait_time (void)
1886 static const struct timeval zero_timeval
= { 0 };
1888 prompt_for_continue_wait_time
= zero_timeval
;
1891 /* Fetch the cumulative time spent in prompt_for_continue. */
1894 get_prompt_for_continue_wait_time (void)
1896 return prompt_for_continue_wait_time
;
1899 /* Reinitialize filter; ie. tell it to reset to original values. */
1902 reinitialize_more_filter (void)
1908 /* Indicate that if the next sequence of characters overflows the line,
1909 a newline should be inserted here rather than when it hits the end.
1910 If INDENT is non-null, it is a string to be printed to indent the
1911 wrapped part on the next line. INDENT must remain accessible until
1912 the next call to wrap_here() or until a newline is printed through
1915 If the line is already overfull, we immediately print a newline and
1916 the indentation, and disable further wrapping.
1918 If we don't know the width of lines, but we know the page height,
1919 we must not wrap words, but should still keep track of newlines
1920 that were explicitly printed.
1922 INDENT should not contain tabs, as that will mess up the char count
1923 on the next line. FIXME.
1925 This routine is guaranteed to force out any output which has been
1926 squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be
1927 used to force out output from the wrap_buffer. */
1930 wrap_here (char *indent
)
1932 /* This should have been allocated, but be paranoid anyway. */
1934 internal_error (__FILE__
, __LINE__
,
1935 _("failed internal consistency check"));
1939 *wrap_pointer
= '\0';
1940 fputs_unfiltered (wrap_buffer
, gdb_stdout
);
1942 wrap_pointer
= wrap_buffer
;
1943 wrap_buffer
[0] = '\0';
1944 if (chars_per_line
== UINT_MAX
) /* No line overflow checking. */
1948 else if (chars_printed
>= chars_per_line
)
1950 puts_filtered ("\n");
1952 puts_filtered (indent
);
1957 wrap_column
= chars_printed
;
1961 wrap_indent
= indent
;
1965 /* Print input string to gdb_stdout, filtered, with wrap,
1966 arranging strings in columns of n chars. String can be
1967 right or left justified in the column. Never prints
1968 trailing spaces. String should never be longer than
1969 width. FIXME: this could be useful for the EXAMINE
1970 command, which currently doesn't tabulate very well. */
1973 puts_filtered_tabular (char *string
, int width
, int right
)
1979 gdb_assert (chars_per_line
> 0);
1980 if (chars_per_line
== UINT_MAX
)
1982 fputs_filtered (string
, gdb_stdout
);
1983 fputs_filtered ("\n", gdb_stdout
);
1987 if (((chars_printed
- 1) / width
+ 2) * width
>= chars_per_line
)
1988 fputs_filtered ("\n", gdb_stdout
);
1990 if (width
>= chars_per_line
)
1991 width
= chars_per_line
- 1;
1993 stringlen
= strlen (string
);
1995 if (chars_printed
> 0)
1996 spaces
= width
- (chars_printed
- 1) % width
- 1;
1998 spaces
+= width
- stringlen
;
2000 spacebuf
= alloca (spaces
+ 1);
2001 spacebuf
[spaces
] = '\0';
2003 spacebuf
[spaces
] = ' ';
2005 fputs_filtered (spacebuf
, gdb_stdout
);
2006 fputs_filtered (string
, gdb_stdout
);
2010 /* Ensure that whatever gets printed next, using the filtered output
2011 commands, starts at the beginning of the line. I.e. if there is
2012 any pending output for the current line, flush it and start a new
2013 line. Otherwise do nothing. */
2018 if (chars_printed
> 0)
2020 puts_filtered ("\n");
2025 /* Like fputs but if FILTER is true, pause after every screenful.
2027 Regardless of FILTER can wrap at points other than the final
2028 character of a line.
2030 Unlike fputs, fputs_maybe_filtered does not return a value.
2031 It is OK for LINEBUFFER to be NULL, in which case just don't print
2034 Note that a longjmp to top level may occur in this routine (only if
2035 FILTER is true) (since prompt_for_continue may do so) so this
2036 routine should not be called when cleanups are not in place. */
2039 fputs_maybe_filtered (const char *linebuffer
, struct ui_file
*stream
,
2042 const char *lineptr
;
2044 if (linebuffer
== 0)
2047 /* Don't do any filtering if it is disabled. */
2048 if (stream
!= gdb_stdout
2049 || !pagination_enabled
2051 || (lines_per_page
== UINT_MAX
&& chars_per_line
== UINT_MAX
)
2052 || top_level_interpreter () == NULL
2053 || ui_out_is_mi_like_p (interp_ui_out (top_level_interpreter ())))
2055 fputs_unfiltered (linebuffer
, stream
);
2059 /* Go through and output each character. Show line extension
2060 when this is necessary; prompt user for new page when this is
2063 lineptr
= linebuffer
;
2066 /* Possible new page. */
2067 if (filter
&& (lines_printed
>= lines_per_page
- 1))
2068 prompt_for_continue ();
2070 while (*lineptr
&& *lineptr
!= '\n')
2072 /* Print a single line. */
2073 if (*lineptr
== '\t')
2076 *wrap_pointer
++ = '\t';
2078 fputc_unfiltered ('\t', stream
);
2079 /* Shifting right by 3 produces the number of tab stops
2080 we have already passed, and then adding one and
2081 shifting left 3 advances to the next tab stop. */
2082 chars_printed
= ((chars_printed
>> 3) + 1) << 3;
2088 *wrap_pointer
++ = *lineptr
;
2090 fputc_unfiltered (*lineptr
, stream
);
2095 if (chars_printed
>= chars_per_line
)
2097 unsigned int save_chars
= chars_printed
;
2101 /* If we aren't actually wrapping, don't output newline --
2102 if chars_per_line is right, we probably just overflowed
2103 anyway; if it's wrong, let us keep going. */
2105 fputc_unfiltered ('\n', stream
);
2107 /* Possible new page. */
2108 if (lines_printed
>= lines_per_page
- 1)
2109 prompt_for_continue ();
2111 /* Now output indentation and wrapped string. */
2114 fputs_unfiltered (wrap_indent
, stream
);
2115 *wrap_pointer
= '\0'; /* Null-terminate saved stuff, */
2116 fputs_unfiltered (wrap_buffer
, stream
); /* and eject it. */
2117 /* FIXME, this strlen is what prevents wrap_indent from
2118 containing tabs. However, if we recurse to print it
2119 and count its chars, we risk trouble if wrap_indent is
2120 longer than (the user settable) chars_per_line.
2121 Note also that this can set chars_printed > chars_per_line
2122 if we are printing a long string. */
2123 chars_printed
= strlen (wrap_indent
)
2124 + (save_chars
- wrap_column
);
2125 wrap_pointer
= wrap_buffer
; /* Reset buffer */
2126 wrap_buffer
[0] = '\0';
2127 wrap_column
= 0; /* And disable fancy wrap */
2132 if (*lineptr
== '\n')
2135 wrap_here ((char *) 0); /* Spit out chars, cancel
2138 fputc_unfiltered ('\n', stream
);
2145 fputs_filtered (const char *linebuffer
, struct ui_file
*stream
)
2147 fputs_maybe_filtered (linebuffer
, stream
, 1);
2151 putchar_unfiltered (int c
)
2155 ui_file_write (gdb_stdout
, &buf
, 1);
2159 /* Write character C to gdb_stdout using GDB's paging mechanism and return C.
2160 May return nonlocally. */
2163 putchar_filtered (int c
)
2165 return fputc_filtered (c
, gdb_stdout
);
2169 fputc_unfiltered (int c
, struct ui_file
*stream
)
2173 ui_file_write (stream
, &buf
, 1);
2178 fputc_filtered (int c
, struct ui_file
*stream
)
2184 fputs_filtered (buf
, stream
);
2188 /* puts_debug is like fputs_unfiltered, except it prints special
2189 characters in printable fashion. */
2192 puts_debug (char *prefix
, char *string
, char *suffix
)
2196 /* Print prefix and suffix after each line. */
2197 static int new_line
= 1;
2198 static int return_p
= 0;
2199 static char *prev_prefix
= "";
2200 static char *prev_suffix
= "";
2202 if (*string
== '\n')
2205 /* If the prefix is changing, print the previous suffix, a new line,
2206 and the new prefix. */
2207 if ((return_p
|| (strcmp (prev_prefix
, prefix
) != 0)) && !new_line
)
2209 fputs_unfiltered (prev_suffix
, gdb_stdlog
);
2210 fputs_unfiltered ("\n", gdb_stdlog
);
2211 fputs_unfiltered (prefix
, gdb_stdlog
);
2214 /* Print prefix if we printed a newline during the previous call. */
2218 fputs_unfiltered (prefix
, gdb_stdlog
);
2221 prev_prefix
= prefix
;
2222 prev_suffix
= suffix
;
2224 /* Output characters in a printable format. */
2225 while ((ch
= *string
++) != '\0')
2231 fputc_unfiltered (ch
, gdb_stdlog
);
2234 fprintf_unfiltered (gdb_stdlog
, "\\x%02x", ch
& 0xff);
2238 fputs_unfiltered ("\\\\", gdb_stdlog
);
2241 fputs_unfiltered ("\\b", gdb_stdlog
);
2244 fputs_unfiltered ("\\f", gdb_stdlog
);
2248 fputs_unfiltered ("\\n", gdb_stdlog
);
2251 fputs_unfiltered ("\\r", gdb_stdlog
);
2254 fputs_unfiltered ("\\t", gdb_stdlog
);
2257 fputs_unfiltered ("\\v", gdb_stdlog
);
2261 return_p
= ch
== '\r';
2264 /* Print suffix if we printed a newline. */
2267 fputs_unfiltered (suffix
, gdb_stdlog
);
2268 fputs_unfiltered ("\n", gdb_stdlog
);
2273 /* Print a variable number of ARGS using format FORMAT. If this
2274 information is going to put the amount written (since the last call
2275 to REINITIALIZE_MORE_FILTER or the last page break) over the page size,
2276 call prompt_for_continue to get the users permision to continue.
2278 Unlike fprintf, this function does not return a value.
2280 We implement three variants, vfprintf (takes a vararg list and stream),
2281 fprintf (takes a stream to write on), and printf (the usual).
2283 Note also that a longjmp to top level may occur in this routine
2284 (since prompt_for_continue may do so) so this routine should not be
2285 called when cleanups are not in place. */
2288 vfprintf_maybe_filtered (struct ui_file
*stream
, const char *format
,
2289 va_list args
, int filter
)
2292 struct cleanup
*old_cleanups
;
2294 linebuffer
= xstrvprintf (format
, args
);
2295 old_cleanups
= make_cleanup (xfree
, linebuffer
);
2296 fputs_maybe_filtered (linebuffer
, stream
, filter
);
2297 do_cleanups (old_cleanups
);
2302 vfprintf_filtered (struct ui_file
*stream
, const char *format
, va_list args
)
2304 vfprintf_maybe_filtered (stream
, format
, args
, 1);
2308 vfprintf_unfiltered (struct ui_file
*stream
, const char *format
, va_list args
)
2311 struct cleanup
*old_cleanups
;
2313 linebuffer
= xstrvprintf (format
, args
);
2314 old_cleanups
= make_cleanup (xfree
, linebuffer
);
2315 if (debug_timestamp
&& stream
== gdb_stdlog
)
2321 gettimeofday (&tm
, NULL
);
2323 len
= strlen (linebuffer
);
2324 need_nl
= (len
> 0 && linebuffer
[len
- 1] != '\n');
2326 timestamp
= xstrprintf ("%ld:%ld %s%s",
2327 (long) tm
.tv_sec
, (long) tm
.tv_usec
,
2329 need_nl
? "\n": "");
2330 make_cleanup (xfree
, timestamp
);
2331 fputs_unfiltered (timestamp
, stream
);
2334 fputs_unfiltered (linebuffer
, stream
);
2335 do_cleanups (old_cleanups
);
2339 vprintf_filtered (const char *format
, va_list args
)
2341 vfprintf_maybe_filtered (gdb_stdout
, format
, args
, 1);
2345 vprintf_unfiltered (const char *format
, va_list args
)
2347 vfprintf_unfiltered (gdb_stdout
, format
, args
);
2351 fprintf_filtered (struct ui_file
*stream
, const char *format
, ...)
2355 va_start (args
, format
);
2356 vfprintf_filtered (stream
, format
, args
);
2361 fprintf_unfiltered (struct ui_file
*stream
, const char *format
, ...)
2365 va_start (args
, format
);
2366 vfprintf_unfiltered (stream
, format
, args
);
2370 /* Like fprintf_filtered, but prints its result indented.
2371 Called as fprintfi_filtered (spaces, stream, format, ...); */
2374 fprintfi_filtered (int spaces
, struct ui_file
*stream
, const char *format
,
2379 va_start (args
, format
);
2380 print_spaces_filtered (spaces
, stream
);
2382 vfprintf_filtered (stream
, format
, args
);
2388 printf_filtered (const char *format
, ...)
2392 va_start (args
, format
);
2393 vfprintf_filtered (gdb_stdout
, format
, args
);
2399 printf_unfiltered (const char *format
, ...)
2403 va_start (args
, format
);
2404 vfprintf_unfiltered (gdb_stdout
, format
, args
);
2408 /* Like printf_filtered, but prints it's result indented.
2409 Called as printfi_filtered (spaces, format, ...); */
2412 printfi_filtered (int spaces
, const char *format
, ...)
2416 va_start (args
, format
);
2417 print_spaces_filtered (spaces
, gdb_stdout
);
2418 vfprintf_filtered (gdb_stdout
, format
, args
);
2422 /* Easy -- but watch out!
2424 This routine is *not* a replacement for puts()! puts() appends a newline.
2425 This one doesn't, and had better not! */
2428 puts_filtered (const char *string
)
2430 fputs_filtered (string
, gdb_stdout
);
2434 puts_unfiltered (const char *string
)
2436 fputs_unfiltered (string
, gdb_stdout
);
2439 /* Return a pointer to N spaces and a null. The pointer is good
2440 until the next call to here. */
2445 static char *spaces
= 0;
2446 static int max_spaces
= -1;
2452 spaces
= (char *) xmalloc (n
+ 1);
2453 for (t
= spaces
+ n
; t
!= spaces
;)
2459 return spaces
+ max_spaces
- n
;
2462 /* Print N spaces. */
2464 print_spaces_filtered (int n
, struct ui_file
*stream
)
2466 fputs_filtered (n_spaces (n
), stream
);
2469 /* C++/ObjC demangler stuff. */
2471 /* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language
2472 LANG, using demangling args ARG_MODE, and print it filtered to STREAM.
2473 If the name is not mangled, or the language for the name is unknown, or
2474 demangling is off, the name is printed in its "raw" form. */
2477 fprintf_symbol_filtered (struct ui_file
*stream
, const char *name
,
2478 enum language lang
, int arg_mode
)
2484 /* If user wants to see raw output, no problem. */
2487 fputs_filtered (name
, stream
);
2491 demangled
= language_demangle (language_def (lang
), name
, arg_mode
);
2492 fputs_filtered (demangled
? demangled
: name
, stream
);
2493 if (demangled
!= NULL
)
2501 /* Do a strcmp() type operation on STRING1 and STRING2, ignoring any
2502 differences in whitespace. Returns 0 if they match, non-zero if they
2503 don't (slightly different than strcmp()'s range of return values).
2505 As an extra hack, string1=="FOO(ARGS)" matches string2=="FOO".
2506 This "feature" is useful when searching for matching C++ function names
2507 (such as if the user types 'break FOO', where FOO is a mangled C++
2511 strcmp_iw (const char *string1
, const char *string2
)
2513 while ((*string1
!= '\0') && (*string2
!= '\0'))
2515 while (isspace (*string1
))
2519 while (isspace (*string2
))
2523 if (case_sensitivity
== case_sensitive_on
&& *string1
!= *string2
)
2525 if (case_sensitivity
== case_sensitive_off
2526 && (tolower ((unsigned char) *string1
)
2527 != tolower ((unsigned char) *string2
)))
2529 if (*string1
!= '\0')
2535 return (*string1
!= '\0' && *string1
!= '(') || (*string2
!= '\0');
2538 /* This is like strcmp except that it ignores whitespace and treats
2539 '(' as the first non-NULL character in terms of ordering. Like
2540 strcmp (and unlike strcmp_iw), it returns negative if STRING1 <
2541 STRING2, 0 if STRING2 = STRING2, and positive if STRING1 > STRING2
2542 according to that ordering.
2544 If a list is sorted according to this function and if you want to
2545 find names in the list that match some fixed NAME according to
2546 strcmp_iw(LIST_ELT, NAME), then the place to start looking is right
2547 where this function would put NAME.
2549 This function must be neutral to the CASE_SENSITIVITY setting as the user
2550 may choose it during later lookup. Therefore this function always sorts
2551 primarily case-insensitively and secondarily case-sensitively.
2553 Here are some examples of why using strcmp to sort is a bad idea:
2557 Say your partial symtab contains: "foo<char *>", "goo". Then, if
2558 we try to do a search for "foo<char*>", strcmp will locate this
2559 after "foo<char *>" and before "goo". Then lookup_partial_symbol
2560 will start looking at strings beginning with "goo", and will never
2561 see the correct match of "foo<char *>".
2563 Parenthesis example:
2565 In practice, this is less like to be an issue, but I'll give it a
2566 shot. Let's assume that '$' is a legitimate character to occur in
2567 symbols. (Which may well even be the case on some systems.) Then
2568 say that the partial symbol table contains "foo$" and "foo(int)".
2569 strcmp will put them in this order, since '$' < '('. Now, if the
2570 user searches for "foo", then strcmp will sort "foo" before "foo$".
2571 Then lookup_partial_symbol will notice that strcmp_iw("foo$",
2572 "foo") is false, so it won't proceed to the actual match of
2573 "foo(int)" with "foo". */
2576 strcmp_iw_ordered (const char *string1
, const char *string2
)
2578 const char *saved_string1
= string1
, *saved_string2
= string2
;
2579 enum case_sensitivity case_pass
= case_sensitive_off
;
2583 /* C1 and C2 are valid only if *string1 != '\0' && *string2 != '\0'.
2584 Provide stub characters if we are already at the end of one of the
2586 char c1
= 'X', c2
= 'X';
2588 while (*string1
!= '\0' && *string2
!= '\0')
2590 while (isspace (*string1
))
2592 while (isspace (*string2
))
2597 case case_sensitive_off
:
2598 c1
= tolower ((unsigned char) *string1
);
2599 c2
= tolower ((unsigned char) *string2
);
2601 case case_sensitive_on
:
2609 if (*string1
!= '\0')
2618 /* Characters are non-equal unless they're both '\0'; we want to
2619 make sure we get the comparison right according to our
2620 comparison in the cases where one of them is '\0' or '('. */
2622 if (*string2
== '\0')
2627 if (*string2
== '\0')
2632 if (*string2
== '\0' || *string2
== '(')
2641 if (case_pass
== case_sensitive_on
)
2644 /* Otherwise the strings were equal in case insensitive way, make
2645 a more fine grained comparison in a case sensitive way. */
2647 case_pass
= case_sensitive_on
;
2648 string1
= saved_string1
;
2649 string2
= saved_string2
;
2653 /* A simple comparison function with opposite semantics to strcmp. */
2656 streq (const char *lhs
, const char *rhs
)
2658 return !strcmp (lhs
, rhs
);
2664 ** Answer whether string_to_compare is a full or partial match to
2665 ** template_string. The partial match must be in sequence starting
2669 subset_compare (char *string_to_compare
, char *template_string
)
2673 if (template_string
!= (char *) NULL
&& string_to_compare
!= (char *) NULL
2674 && strlen (string_to_compare
) <= strlen (template_string
))
2676 (startswith (template_string
, string_to_compare
));
2683 show_debug_timestamp (struct ui_file
*file
, int from_tty
,
2684 struct cmd_list_element
*c
, const char *value
)
2686 fprintf_filtered (file
, _("Timestamping debugging messages is %s.\n"),
2692 initialize_utils (void)
2694 add_setshow_uinteger_cmd ("width", class_support
, &chars_per_line
, _("\
2695 Set number of characters where GDB should wrap lines of its output."), _("\
2696 Show number of characters where GDB should wrap lines of its output."), _("\
2697 This affects where GDB wraps its output to fit the screen width.\n\
2698 Setting this to \"unlimited\" or zero prevents GDB from wrapping its output."),
2700 show_chars_per_line
,
2701 &setlist
, &showlist
);
2703 add_setshow_uinteger_cmd ("height", class_support
, &lines_per_page
, _("\
2704 Set number of lines in a page for GDB output pagination."), _("\
2705 Show number of lines in a page for GDB output pagination."), _("\
2706 This affects the number of lines after which GDB will pause\n\
2707 its output and ask you whether to continue.\n\
2708 Setting this to \"unlimited\" or zero causes GDB never pause during output."),
2710 show_lines_per_page
,
2711 &setlist
, &showlist
);
2713 add_setshow_boolean_cmd ("pagination", class_support
,
2714 &pagination_enabled
, _("\
2715 Set state of GDB output pagination."), _("\
2716 Show state of GDB output pagination."), _("\
2717 When pagination is ON, GDB pauses at end of each screenful of\n\
2718 its output and asks you whether to continue.\n\
2719 Turning pagination off is an alternative to \"set height unlimited\"."),
2721 show_pagination_enabled
,
2722 &setlist
, &showlist
);
2724 add_setshow_boolean_cmd ("sevenbit-strings", class_support
,
2725 &sevenbit_strings
, _("\
2726 Set printing of 8-bit characters in strings as \\nnn."), _("\
2727 Show printing of 8-bit characters in strings as \\nnn."), NULL
,
2729 show_sevenbit_strings
,
2730 &setprintlist
, &showprintlist
);
2732 add_setshow_boolean_cmd ("timestamp", class_maintenance
,
2733 &debug_timestamp
, _("\
2734 Set timestamping of debugging messages."), _("\
2735 Show timestamping of debugging messages."), _("\
2736 When set, debugging messages will be marked with seconds and microseconds."),
2738 show_debug_timestamp
,
2739 &setdebuglist
, &showdebuglist
);
2743 paddress (struct gdbarch
*gdbarch
, CORE_ADDR addr
)
2745 /* Truncate address to the size of a target address, avoiding shifts
2746 larger or equal than the width of a CORE_ADDR. The local
2747 variable ADDR_BIT stops the compiler reporting a shift overflow
2748 when it won't occur. */
2749 /* NOTE: This assumes that the significant address information is
2750 kept in the least significant bits of ADDR - the upper bits were
2751 either zero or sign extended. Should gdbarch_address_to_pointer or
2752 some ADDRESS_TO_PRINTABLE() be used to do the conversion? */
2754 int addr_bit
= gdbarch_addr_bit (gdbarch
);
2756 if (addr_bit
< (sizeof (CORE_ADDR
) * HOST_CHAR_BIT
))
2757 addr
&= ((CORE_ADDR
) 1 << addr_bit
) - 1;
2758 return hex_string (addr
);
2761 /* This function is described in "defs.h". */
2764 print_core_address (struct gdbarch
*gdbarch
, CORE_ADDR address
)
2766 int addr_bit
= gdbarch_addr_bit (gdbarch
);
2768 if (addr_bit
< (sizeof (CORE_ADDR
) * HOST_CHAR_BIT
))
2769 address
&= ((CORE_ADDR
) 1 << addr_bit
) - 1;
2771 /* FIXME: cagney/2002-05-03: Need local_address_string() function
2772 that returns the language localized string formatted to a width
2773 based on gdbarch_addr_bit. */
2775 return hex_string_custom (address
, 8);
2777 return hex_string_custom (address
, 16);
2780 /* Callback hash_f for htab_create_alloc or htab_create_alloc_ex. */
2783 core_addr_hash (const void *ap
)
2785 const CORE_ADDR
*addrp
= ap
;
2790 /* Callback eq_f for htab_create_alloc or htab_create_alloc_ex. */
2793 core_addr_eq (const void *ap
, const void *bp
)
2795 const CORE_ADDR
*addr_ap
= ap
;
2796 const CORE_ADDR
*addr_bp
= bp
;
2798 return *addr_ap
== *addr_bp
;
2801 /* Convert a string back into a CORE_ADDR. */
2803 string_to_core_addr (const char *my_string
)
2807 if (my_string
[0] == '0' && tolower (my_string
[1]) == 'x')
2809 /* Assume that it is in hex. */
2812 for (i
= 2; my_string
[i
] != '\0'; i
++)
2814 if (isdigit (my_string
[i
]))
2815 addr
= (my_string
[i
] - '0') + (addr
* 16);
2816 else if (isxdigit (my_string
[i
]))
2817 addr
= (tolower (my_string
[i
]) - 'a' + 0xa) + (addr
* 16);
2819 error (_("invalid hex \"%s\""), my_string
);
2824 /* Assume that it is in decimal. */
2827 for (i
= 0; my_string
[i
] != '\0'; i
++)
2829 if (isdigit (my_string
[i
]))
2830 addr
= (my_string
[i
] - '0') + (addr
* 10);
2832 error (_("invalid decimal \"%s\""), my_string
);
2840 gdb_realpath (const char *filename
)
2842 /* On most hosts, we rely on canonicalize_file_name to compute
2843 the FILENAME's realpath.
2845 But the situation is slightly more complex on Windows, due to some
2846 versions of GCC which were reported to generate paths where
2847 backlashes (the directory separator) were doubled. For instance:
2848 c:\\some\\double\\slashes\\dir
2850 c:\some\double\slashes\dir
2851 Those double-slashes were getting in the way when comparing paths,
2852 for instance when trying to insert a breakpoint as follow:
2853 (gdb) b c:/some/double/slashes/dir/foo.c:4
2854 No source file named c:/some/double/slashes/dir/foo.c:4.
2855 (gdb) b c:\some\double\slashes\dir\foo.c:4
2856 No source file named c:\some\double\slashes\dir\foo.c:4.
2857 To prevent this from happening, we need this function to always
2858 strip those extra backslashes. While canonicalize_file_name does
2859 perform this simplification, it only works when the path is valid.
2860 Since the simplification would be useful even if the path is not
2861 valid (one can always set a breakpoint on a file, even if the file
2862 does not exist locally), we rely instead on GetFullPathName to
2863 perform the canonicalization. */
2865 #if defined (_WIN32)
2868 DWORD len
= GetFullPathName (filename
, MAX_PATH
, buf
, NULL
);
2870 /* The file system is case-insensitive but case-preserving.
2871 So it is important we do not lowercase the path. Otherwise,
2872 we might not be able to display the original casing in a given
2874 if (len
> 0 && len
< MAX_PATH
)
2875 return xstrdup (buf
);
2879 char *rp
= canonicalize_file_name (filename
);
2886 /* This system is a lost cause, just dup the buffer. */
2887 return xstrdup (filename
);
2890 /* Return a copy of FILENAME, with its directory prefix canonicalized
2894 gdb_realpath_keepfile (const char *filename
)
2896 const char *base_name
= lbasename (filename
);
2901 /* Extract the basename of filename, and return immediately
2902 a copy of filename if it does not contain any directory prefix. */
2903 if (base_name
== filename
)
2904 return xstrdup (filename
);
2906 dir_name
= alloca ((size_t) (base_name
- filename
+ 2));
2907 /* Allocate enough space to store the dir_name + plus one extra
2908 character sometimes needed under Windows (see below), and
2909 then the closing \000 character. */
2910 strncpy (dir_name
, filename
, base_name
- filename
);
2911 dir_name
[base_name
- filename
] = '\000';
2913 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
2914 /* We need to be careful when filename is of the form 'd:foo', which
2915 is equivalent of d:./foo, which is totally different from d:/foo. */
2916 if (strlen (dir_name
) == 2 && isalpha (dir_name
[0]) && dir_name
[1] == ':')
2919 dir_name
[3] = '\000';
2923 /* Canonicalize the directory prefix, and build the resulting
2924 filename. If the dirname realpath already contains an ending
2925 directory separator, avoid doubling it. */
2926 real_path
= gdb_realpath (dir_name
);
2927 if (IS_DIR_SEPARATOR (real_path
[strlen (real_path
) - 1]))
2928 result
= concat (real_path
, base_name
, (char *) NULL
);
2930 result
= concat (real_path
, SLASH_STRING
, base_name
, (char *) NULL
);
2936 /* Return PATH in absolute form, performing tilde-expansion if necessary.
2937 PATH cannot be NULL or the empty string.
2938 This does not resolve symlinks however, use gdb_realpath for that.
2939 Space for the result is allocated with malloc.
2940 If the path is already absolute, it is strdup'd.
2941 If there is a problem computing the absolute path, the path is returned
2942 unchanged (still strdup'd). */
2945 gdb_abspath (const char *path
)
2947 gdb_assert (path
!= NULL
&& path
[0] != '\0');
2950 return tilde_expand (path
);
2952 if (IS_ABSOLUTE_PATH (path
))
2953 return xstrdup (path
);
2955 /* Beware the // my son, the Emacs barfs, the botch that catch... */
2956 return concat (current_directory
,
2957 IS_DIR_SEPARATOR (current_directory
[strlen (current_directory
) - 1])
2958 ? "" : SLASH_STRING
,
2959 path
, (char *) NULL
);
2963 align_up (ULONGEST v
, int n
)
2965 /* Check that N is really a power of two. */
2966 gdb_assert (n
&& (n
& (n
-1)) == 0);
2967 return (v
+ n
- 1) & -n
;
2971 align_down (ULONGEST v
, int n
)
2973 /* Check that N is really a power of two. */
2974 gdb_assert (n
&& (n
& (n
-1)) == 0);
2978 /* Allocation function for the libiberty hash table which uses an
2979 obstack. The obstack is passed as DATA. */
2982 hashtab_obstack_allocate (void *data
, size_t size
, size_t count
)
2984 size_t total
= size
* count
;
2985 void *ptr
= obstack_alloc ((struct obstack
*) data
, total
);
2987 memset (ptr
, 0, total
);
2991 /* Trivial deallocation function for the libiberty splay tree and hash
2992 table - don't deallocate anything. Rely on later deletion of the
2993 obstack. DATA will be the obstack, although it is not needed
2997 dummy_obstack_deallocate (void *object
, void *data
)
3002 /* Simple, portable version of dirname that does not modify its
3006 ldirname (const char *filename
)
3008 const char *base
= lbasename (filename
);
3011 while (base
> filename
&& IS_DIR_SEPARATOR (base
[-1]))
3014 if (base
== filename
)
3017 dirname
= xmalloc (base
- filename
+ 2);
3018 memcpy (dirname
, filename
, base
- filename
);
3020 /* On DOS based file systems, convert "d:foo" to "d:.", so that we
3021 create "d:./bar" later instead of the (different) "d:/bar". */
3022 if (base
- filename
== 2 && IS_ABSOLUTE_PATH (base
)
3023 && !IS_DIR_SEPARATOR (filename
[0]))
3024 dirname
[base
++ - filename
] = '.';
3026 dirname
[base
- filename
] = '\0';
3030 /* Call libiberty's buildargv, and return the result.
3031 If buildargv fails due to out-of-memory, call nomem.
3032 Therefore, the returned value is guaranteed to be non-NULL,
3033 unless the parameter itself is NULL. */
3036 gdb_buildargv (const char *s
)
3038 char **argv
= buildargv (s
);
3040 if (s
!= NULL
&& argv
== NULL
)
3046 compare_positive_ints (const void *ap
, const void *bp
)
3048 /* Because we know we're comparing two ints which are positive,
3049 there's no danger of overflow here. */
3050 return * (int *) ap
- * (int *) bp
;
3053 /* String compare function for qsort. */
3056 compare_strings (const void *arg1
, const void *arg2
)
3058 const char **s1
= (const char **) arg1
;
3059 const char **s2
= (const char **) arg2
;
3061 return strcmp (*s1
, *s2
);
3064 #define AMBIGUOUS_MESS1 ".\nMatching formats:"
3065 #define AMBIGUOUS_MESS2 \
3066 ".\nUse \"set gnutarget format-name\" to specify the format."
3069 gdb_bfd_errmsg (bfd_error_type error_tag
, char **matching
)
3075 /* Check if errmsg just need simple return. */
3076 if (error_tag
!= bfd_error_file_ambiguously_recognized
|| matching
== NULL
)
3077 return bfd_errmsg (error_tag
);
3079 ret_len
= strlen (bfd_errmsg (error_tag
)) + strlen (AMBIGUOUS_MESS1
)
3080 + strlen (AMBIGUOUS_MESS2
);
3081 for (p
= matching
; *p
; p
++)
3082 ret_len
+= strlen (*p
) + 1;
3083 ret
= xmalloc (ret_len
+ 1);
3085 make_cleanup (xfree
, ret
);
3087 strcpy (retp
, bfd_errmsg (error_tag
));
3088 retp
+= strlen (retp
);
3090 strcpy (retp
, AMBIGUOUS_MESS1
);
3091 retp
+= strlen (retp
);
3093 for (p
= matching
; *p
; p
++)
3095 sprintf (retp
, " %s", *p
);
3096 retp
+= strlen (retp
);
3100 strcpy (retp
, AMBIGUOUS_MESS2
);
3105 /* Return ARGS parsed as a valid pid, or throw an error. */
3108 parse_pid_to_attach (const char *args
)
3114 error_no_arg (_("process-id to attach"));
3116 dummy
= (char *) args
;
3117 pid
= strtoul (args
, &dummy
, 0);
3118 /* Some targets don't set errno on errors, grrr! */
3119 if ((pid
== 0 && dummy
== args
) || dummy
!= &args
[strlen (args
)])
3120 error (_("Illegal process-id: %s."), args
);
3125 /* Helper for make_bpstat_clear_actions_cleanup. */
3128 do_bpstat_clear_actions_cleanup (void *unused
)
3130 bpstat_clear_actions ();
3133 /* Call bpstat_clear_actions for the case an exception is throw. You should
3134 discard_cleanups if no exception is caught. */
3137 make_bpstat_clear_actions_cleanup (void)
3139 return make_cleanup (do_bpstat_clear_actions_cleanup
, NULL
);
3142 /* Check for GCC >= 4.x according to the symtab->producer string. Return minor
3143 version (x) of 4.x in such case. If it is not GCC or it is GCC older than
3144 4.x return -1. If it is GCC 5.x or higher return INT_MAX. */
3147 producer_is_gcc_ge_4 (const char *producer
)
3151 if (! producer_is_gcc (producer
, &major
, &minor
))
3160 /* Returns nonzero if the given PRODUCER string is GCC and sets the MAJOR
3161 and MINOR versions when not NULL. Returns zero if the given PRODUCER
3162 is NULL or it isn't GCC. */
3165 producer_is_gcc (const char *producer
, int *major
, int *minor
)
3169 if (producer
!= NULL
&& startswith (producer
, "GNU "))
3178 /* Skip any identifier after "GNU " - such as "C11" "C++" or "Java".
3179 A full producer string might look like:
3181 "GNU Fortran 4.8.2 20140120 (Red Hat 4.8.2-16) -mtune=generic ..."
3182 "GNU C++14 5.0.0 20150123 (experimental)"
3184 cs
= &producer
[strlen ("GNU ")];
3185 while (*cs
&& !isspace (*cs
))
3187 if (*cs
&& isspace (*cs
))
3189 if (sscanf (cs
, "%d.%d", major
, minor
) == 2)
3193 /* Not recognized as GCC. */
3197 /* Helper for make_cleanup_free_char_ptr_vec. */
3200 do_free_char_ptr_vec (void *arg
)
3202 VEC (char_ptr
) *char_ptr_vec
= arg
;
3204 free_char_ptr_vec (char_ptr_vec
);
3207 /* Make cleanup handler calling xfree for each element of CHAR_PTR_VEC and
3208 final VEC_free for CHAR_PTR_VEC itself.
3210 You must not modify CHAR_PTR_VEC after this cleanup registration as the
3211 CHAR_PTR_VEC base address may change on its updates. Contrary to VEC_free
3212 this function does not (cannot) clear the pointer. */
3215 make_cleanup_free_char_ptr_vec (VEC (char_ptr
) *char_ptr_vec
)
3217 return make_cleanup (do_free_char_ptr_vec
, char_ptr_vec
);
3220 /* Substitute all occurences of string FROM by string TO in *STRINGP. *STRINGP
3221 must come from xrealloc-compatible allocator and it may be updated. FROM
3222 needs to be delimited by IS_DIR_SEPARATOR or DIRNAME_SEPARATOR (or be
3223 located at the start or end of *STRINGP. */
3226 substitute_path_component (char **stringp
, const char *from
, const char *to
)
3228 char *string
= *stringp
, *s
;
3229 const size_t from_len
= strlen (from
);
3230 const size_t to_len
= strlen (to
);
3234 s
= strstr (s
, from
);
3238 if ((s
== string
|| IS_DIR_SEPARATOR (s
[-1])
3239 || s
[-1] == DIRNAME_SEPARATOR
)
3240 && (s
[from_len
] == '\0' || IS_DIR_SEPARATOR (s
[from_len
])
3241 || s
[from_len
] == DIRNAME_SEPARATOR
))
3245 string_new
= xrealloc (string
, (strlen (string
) + to_len
+ 1));
3247 /* Relocate the current S pointer. */
3248 s
= s
- string
+ string_new
;
3249 string
= string_new
;
3251 /* Replace from by to. */
3252 memmove (&s
[to_len
], &s
[from_len
], strlen (&s
[from_len
]) + 1);
3253 memcpy (s
, to
, to_len
);
3268 /* SIGALRM handler for waitpid_with_timeout. */
3271 sigalrm_handler (int signo
)
3273 /* Nothing to do. */
3278 /* Wrapper to wait for child PID to die with TIMEOUT.
3279 TIMEOUT is the time to stop waiting in seconds.
3280 If TIMEOUT is zero, pass WNOHANG to waitpid.
3281 Returns PID if it was successfully waited for, otherwise -1.
3283 Timeouts are currently implemented with alarm and SIGALRM.
3284 If the host does not support them, this waits "forever".
3285 It would be odd though for a host to have waitpid and not SIGALRM. */
3288 wait_to_die_with_timeout (pid_t pid
, int *status
, int timeout
)
3290 pid_t waitpid_result
;
3292 gdb_assert (pid
> 0);
3293 gdb_assert (timeout
>= 0);
3298 #if defined (HAVE_SIGACTION) && defined (SA_RESTART)
3299 struct sigaction sa
, old_sa
;
3301 sa
.sa_handler
= sigalrm_handler
;
3302 sigemptyset (&sa
.sa_mask
);
3304 sigaction (SIGALRM
, &sa
, &old_sa
);
3308 ofunc
= (void (*)()) signal (SIGALRM
, sigalrm_handler
);
3314 waitpid_result
= waitpid (pid
, status
, 0);
3318 #if defined (HAVE_SIGACTION) && defined (SA_RESTART)
3319 sigaction (SIGALRM
, &old_sa
, NULL
);
3321 signal (SIGALRM
, ofunc
);
3326 waitpid_result
= waitpid (pid
, status
, WNOHANG
);
3328 if (waitpid_result
== pid
)
3334 #endif /* HAVE_WAITPID */
3336 /* Provide fnmatch compatible function for FNM_FILE_NAME matching of host files.
3337 Both FNM_FILE_NAME and FNM_NOESCAPE must be set in FLAGS.
3339 It handles correctly HAVE_DOS_BASED_FILE_SYSTEM and
3340 HAVE_CASE_INSENSITIVE_FILE_SYSTEM. */
3343 gdb_filename_fnmatch (const char *pattern
, const char *string
, int flags
)
3345 gdb_assert ((flags
& FNM_FILE_NAME
) != 0);
3347 /* It is unclear how '\' escaping vs. directory separator should coexist. */
3348 gdb_assert ((flags
& FNM_NOESCAPE
) != 0);
3350 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
3352 char *pattern_slash
, *string_slash
;
3354 /* Replace '\' by '/' in both strings. */
3356 pattern_slash
= alloca (strlen (pattern
) + 1);
3357 strcpy (pattern_slash
, pattern
);
3358 pattern
= pattern_slash
;
3359 for (; *pattern_slash
!= 0; pattern_slash
++)
3360 if (IS_DIR_SEPARATOR (*pattern_slash
))
3361 *pattern_slash
= '/';
3363 string_slash
= alloca (strlen (string
) + 1);
3364 strcpy (string_slash
, string
);
3365 string
= string_slash
;
3366 for (; *string_slash
!= 0; string_slash
++)
3367 if (IS_DIR_SEPARATOR (*string_slash
))
3368 *string_slash
= '/';
3370 #endif /* HAVE_DOS_BASED_FILE_SYSTEM */
3372 #ifdef HAVE_CASE_INSENSITIVE_FILE_SYSTEM
3373 flags
|= FNM_CASEFOLD
;
3374 #endif /* HAVE_CASE_INSENSITIVE_FILE_SYSTEM */
3376 return fnmatch (pattern
, string
, flags
);
3379 /* Provide a prototype to silence -Wmissing-prototypes. */
3380 extern initialize_file_ftype _initialize_utils
;
3383 _initialize_utils (void)
3385 add_internal_problem_command (&internal_error_problem
);
3386 add_internal_problem_command (&internal_warning_problem
);
3387 add_internal_problem_command (&demangler_warning_problem
);