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"
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
);
195 do_close_cleanup (void *arg
)
203 make_cleanup_close (int fd
)
205 int *saved_fd
= xmalloc (sizeof (fd
));
208 return make_cleanup_dtor (do_close_cleanup
, saved_fd
, xfree
);
211 /* Helper function which does the work for make_cleanup_fclose. */
214 do_fclose_cleanup (void *arg
)
221 /* Return a new cleanup that closes FILE. */
224 make_cleanup_fclose (FILE *file
)
226 return make_cleanup (do_fclose_cleanup
, file
);
229 /* Helper function which does the work for make_cleanup_obstack_free. */
232 do_obstack_free (void *arg
)
234 struct obstack
*ob
= arg
;
236 obstack_free (ob
, NULL
);
239 /* Return a new cleanup that frees OBSTACK. */
242 make_cleanup_obstack_free (struct obstack
*obstack
)
244 return make_cleanup (do_obstack_free
, obstack
);
248 do_ui_file_delete (void *arg
)
250 ui_file_delete (arg
);
254 make_cleanup_ui_file_delete (struct ui_file
*arg
)
256 return make_cleanup (do_ui_file_delete
, arg
);
259 /* Helper function for make_cleanup_ui_out_redirect_pop. */
262 do_ui_out_redirect_pop (void *arg
)
264 struct ui_out
*uiout
= arg
;
266 if (ui_out_redirect (uiout
, NULL
) < 0)
267 warning (_("Cannot restore redirection of the current output protocol"));
270 /* Return a new cleanup that pops the last redirection by ui_out_redirect
271 with NULL parameter. */
274 make_cleanup_ui_out_redirect_pop (struct ui_out
*uiout
)
276 return make_cleanup (do_ui_out_redirect_pop
, uiout
);
280 do_free_section_addr_info (void *arg
)
282 free_section_addr_info (arg
);
286 make_cleanup_free_section_addr_info (struct section_addr_info
*addrs
)
288 return make_cleanup (do_free_section_addr_info
, addrs
);
291 struct restore_integer_closure
298 restore_integer (void *p
)
300 struct restore_integer_closure
*closure
= p
;
302 *(closure
->variable
) = closure
->value
;
305 /* Remember the current value of *VARIABLE and make it restored when
306 the cleanup is run. */
309 make_cleanup_restore_integer (int *variable
)
311 struct restore_integer_closure
*c
=
312 xmalloc (sizeof (struct restore_integer_closure
));
314 c
->variable
= variable
;
315 c
->value
= *variable
;
317 return make_cleanup_dtor (restore_integer
, (void *) c
, xfree
);
320 /* Remember the current value of *VARIABLE and make it restored when
321 the cleanup is run. */
324 make_cleanup_restore_uinteger (unsigned int *variable
)
326 return make_cleanup_restore_integer ((int *) variable
);
329 /* Helper for make_cleanup_unpush_target. */
332 do_unpush_target (void *arg
)
334 struct target_ops
*ops
= arg
;
339 /* Return a new cleanup that unpushes OPS. */
342 make_cleanup_unpush_target (struct target_ops
*ops
)
344 return make_cleanup (do_unpush_target
, ops
);
347 /* Helper for make_cleanup_htab_delete compile time checking the types. */
350 do_htab_delete_cleanup (void *htab_voidp
)
352 htab_t htab
= htab_voidp
;
357 /* Return a new cleanup that deletes HTAB. */
360 make_cleanup_htab_delete (htab_t htab
)
362 return make_cleanup (do_htab_delete_cleanup
, htab
);
365 struct restore_ui_file_closure
367 struct ui_file
**variable
;
368 struct ui_file
*value
;
372 do_restore_ui_file (void *p
)
374 struct restore_ui_file_closure
*closure
= p
;
376 *(closure
->variable
) = closure
->value
;
379 /* Remember the current value of *VARIABLE and make it restored when
380 the cleanup is run. */
383 make_cleanup_restore_ui_file (struct ui_file
**variable
)
385 struct restore_ui_file_closure
*c
= XNEW (struct restore_ui_file_closure
);
387 c
->variable
= variable
;
388 c
->value
= *variable
;
390 return make_cleanup_dtor (do_restore_ui_file
, (void *) c
, xfree
);
393 /* Helper for make_cleanup_value_free_to_mark. */
396 do_value_free_to_mark (void *value
)
398 value_free_to_mark ((struct value
*) value
);
401 /* Free all values allocated since MARK was obtained by value_mark
402 (except for those released) when the cleanup is run. */
405 make_cleanup_value_free_to_mark (struct value
*mark
)
407 return make_cleanup (do_value_free_to_mark
, mark
);
410 /* Helper for make_cleanup_value_free. */
413 do_value_free (void *value
)
421 make_cleanup_value_free (struct value
*value
)
423 return make_cleanup (do_value_free
, value
);
426 /* Helper for make_cleanup_free_so. */
429 do_free_so (void *arg
)
431 struct so_list
*so
= arg
;
436 /* Make cleanup handler calling free_so for SO. */
439 make_cleanup_free_so (struct so_list
*so
)
441 return make_cleanup (do_free_so
, so
);
444 /* Helper for make_cleanup_restore_current_language. */
447 do_restore_current_language (void *p
)
449 enum language saved_lang
= (uintptr_t) p
;
451 set_language (saved_lang
);
454 /* Remember the current value of CURRENT_LANGUAGE and make it restored when
455 the cleanup is run. */
458 make_cleanup_restore_current_language (void)
460 enum language saved_lang
= current_language
->la_language
;
462 return make_cleanup (do_restore_current_language
,
463 (void *) (uintptr_t) saved_lang
);
466 /* Helper function for make_cleanup_clear_parser_state. */
469 do_clear_parser_state (void *ptr
)
471 struct parser_state
**p
= (struct parser_state
**) ptr
;
476 /* Clean (i.e., set to NULL) the parser state variable P. */
479 make_cleanup_clear_parser_state (struct parser_state
**p
)
481 return make_cleanup (do_clear_parser_state
, (void *) p
);
484 /* This function is useful for cleanups.
488 old_chain = make_cleanup (free_current_contents, &foo);
490 to arrange to free the object thus allocated. */
493 free_current_contents (void *ptr
)
495 void **location
= ptr
;
497 if (location
== NULL
)
498 internal_error (__FILE__
, __LINE__
,
499 _("free_current_contents: NULL pointer"));
500 if (*location
!= NULL
)
509 /* Print a warning message. The first argument STRING is the warning
510 message, used as an fprintf format string, the second is the
511 va_list of arguments for that string. A warning is unfiltered (not
512 paginated) so that the user does not need to page through each
513 screen full of warnings when there are lots of them. */
516 vwarning (const char *string
, va_list args
)
518 if (deprecated_warning_hook
)
519 (*deprecated_warning_hook
) (string
, args
);
522 if (target_supports_terminal_ours ())
523 target_terminal_ours ();
524 if (filtered_printing_initialized ())
525 wrap_here (""); /* Force out any buffered output. */
526 gdb_flush (gdb_stdout
);
527 if (warning_pre_print
)
528 fputs_unfiltered (warning_pre_print
, gdb_stderr
);
529 vfprintf_unfiltered (gdb_stderr
, string
, args
);
530 fprintf_unfiltered (gdb_stderr
, "\n");
534 /* Print an error message and return to command level.
535 The first argument STRING is the error message, used as a fprintf string,
536 and the remaining args are passed as arguments to it. */
539 verror (const char *string
, va_list args
)
541 throw_verror (GENERIC_ERROR
, string
, args
);
545 error_stream (struct ui_file
*stream
)
547 char *message
= ui_file_xstrdup (stream
, NULL
);
549 make_cleanup (xfree
, message
);
550 error (("%s"), message
);
553 /* Emit a message and abort. */
555 static void ATTRIBUTE_NORETURN
556 abort_with_message (const char *msg
)
558 if (gdb_stderr
== NULL
)
561 fputs_unfiltered (msg
, gdb_stderr
);
563 abort (); /* NOTE: GDB has only three calls to abort(). */
566 /* Dump core trying to increase the core soft limit to hard limit first. */
571 #ifdef HAVE_SETRLIMIT
572 struct rlimit rlim
= { RLIM_INFINITY
, RLIM_INFINITY
};
574 setrlimit (RLIMIT_CORE
, &rlim
);
575 #endif /* HAVE_SETRLIMIT */
577 abort (); /* NOTE: GDB has only three calls to abort(). */
580 /* Check whether GDB will be able to dump core using the dump_core
581 function. Returns zero if GDB cannot or should not dump core.
582 If LIMIT_KIND is LIMIT_CUR the user's soft limit will be respected.
583 If LIMIT_KIND is LIMIT_MAX only the hard limit will be respected. */
586 can_dump_core (enum resource_limit_kind limit_kind
)
588 #ifdef HAVE_GETRLIMIT
591 /* Be quiet and assume we can dump if an error is returned. */
592 if (getrlimit (RLIMIT_CORE
, &rlim
) != 0)
598 if (rlim
.rlim_cur
== 0)
602 if (rlim
.rlim_max
== 0)
605 #endif /* HAVE_GETRLIMIT */
610 /* Print a warning that we cannot dump core. */
613 warn_cant_dump_core (const char *reason
)
615 fprintf_unfiltered (gdb_stderr
,
616 _("%s\nUnable to dump core, use `ulimit -c"
617 " unlimited' before executing GDB next time.\n"),
621 /* Check whether GDB will be able to dump core using the dump_core
622 function, and print a warning if we cannot. */
625 can_dump_core_warn (enum resource_limit_kind limit_kind
,
628 int core_dump_allowed
= can_dump_core (limit_kind
);
630 if (!core_dump_allowed
)
631 warn_cant_dump_core (reason
);
633 return core_dump_allowed
;
636 /* Allow the user to configure the debugger behavior with respect to
637 what to do when an internal problem is detected. */
639 const char internal_problem_ask
[] = "ask";
640 const char internal_problem_yes
[] = "yes";
641 const char internal_problem_no
[] = "no";
642 static const char *const internal_problem_modes
[] =
644 internal_problem_ask
,
645 internal_problem_yes
,
650 /* Print a message reporting an internal error/warning. Ask the user
651 if they want to continue, dump core, or just exit. Return
652 something to indicate a quit. */
654 struct internal_problem
657 int user_settable_should_quit
;
658 const char *should_quit
;
659 int user_settable_should_dump_core
;
660 const char *should_dump_core
;
663 /* Report a problem, internal to GDB, to the user. Once the problem
664 has been reported, and assuming GDB didn't quit, the caller can
665 either allow execution to resume or throw an error. */
667 static void ATTRIBUTE_PRINTF (4, 0)
668 internal_vproblem (struct internal_problem
*problem
,
669 const char *file
, int line
, const char *fmt
, va_list ap
)
675 struct cleanup
*cleanup
= make_cleanup (null_cleanup
, NULL
);
677 /* Don't allow infinite error/warning recursion. */
679 static char msg
[] = "Recursive internal problem.\n";
688 abort_with_message (msg
);
691 /* Newer GLIBC versions put the warn_unused_result attribute
692 on write, but this is one of those rare cases where
693 ignoring the return value is correct. Casting to (void)
694 does not fix this problem. This is the solution suggested
695 at http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25509. */
696 if (write (STDERR_FILENO
, msg
, sizeof (msg
)) != sizeof (msg
))
697 abort (); /* NOTE: GDB has only three calls to abort(). */
702 /* Create a string containing the full error/warning message. Need
703 to call query with this full string, as otherwize the reason
704 (error/warning) and question become separated. Format using a
705 style similar to a compiler error message. Include extra detail
706 so that the user knows that they are living on the edge. */
710 msg
= xstrvprintf (fmt
, ap
);
711 reason
= xstrprintf ("%s:%d: %s: %s\n"
712 "A problem internal to GDB has been detected,\n"
713 "further debugging may prove unreliable.",
714 file
, line
, problem
->name
, msg
);
716 make_cleanup (xfree
, reason
);
719 /* Fall back to abort_with_message if gdb_stderr is not set up. */
720 if (gdb_stderr
== NULL
)
722 fputs (reason
, stderr
);
723 abort_with_message ("\n");
726 /* Try to get the message out and at the start of a new line. */
727 if (target_supports_terminal_ours ())
728 target_terminal_ours ();
729 if (filtered_printing_initialized ())
732 /* Emit the message unless query will emit it below. */
733 if (problem
->should_quit
!= internal_problem_ask
735 || !filtered_printing_initialized ())
736 fprintf_unfiltered (gdb_stderr
, "%s\n", reason
);
738 if (problem
->should_quit
== internal_problem_ask
)
740 /* Default (yes/batch case) is to quit GDB. When in batch mode
741 this lessens the likelihood of GDB going into an infinite
743 if (!confirm
|| !filtered_printing_initialized ())
746 quit_p
= query (_("%s\nQuit this debugging session? "), reason
);
748 else if (problem
->should_quit
== internal_problem_yes
)
750 else if (problem
->should_quit
== internal_problem_no
)
753 internal_error (__FILE__
, __LINE__
, _("bad switch"));
755 fputs_unfiltered (_("\nThis is a bug, please report it."), gdb_stderr
);
756 if (REPORT_BUGS_TO
[0])
757 fprintf_unfiltered (gdb_stderr
, _(" For instructions, see:\n%s."),
759 fputs_unfiltered ("\n\n", gdb_stderr
);
761 if (problem
->should_dump_core
== internal_problem_ask
)
763 if (!can_dump_core_warn (LIMIT_MAX
, reason
))
765 else if (!filtered_printing_initialized ())
769 /* Default (yes/batch case) is to dump core. This leaves a GDB
770 `dropping' so that it is easier to see that something went
772 dump_core_p
= query (_("%s\nCreate a core file of GDB? "), reason
);
775 else if (problem
->should_dump_core
== internal_problem_yes
)
776 dump_core_p
= can_dump_core_warn (LIMIT_MAX
, reason
);
777 else if (problem
->should_dump_core
== internal_problem_no
)
780 internal_error (__FILE__
, __LINE__
, _("bad switch"));
793 #ifdef HAVE_WORKING_FORK
801 do_cleanups (cleanup
);
804 static struct internal_problem internal_error_problem
= {
805 "internal-error", 1, internal_problem_ask
, 1, internal_problem_ask
809 internal_verror (const char *file
, int line
, const char *fmt
, va_list ap
)
811 internal_vproblem (&internal_error_problem
, file
, line
, fmt
, ap
);
812 throw_quit (_("Command aborted."));
815 static struct internal_problem internal_warning_problem
= {
816 "internal-warning", 1, internal_problem_ask
, 1, internal_problem_ask
820 internal_vwarning (const char *file
, int line
, const char *fmt
, va_list ap
)
822 internal_vproblem (&internal_warning_problem
, file
, line
, fmt
, ap
);
825 static struct internal_problem demangler_warning_problem
= {
826 "demangler-warning", 1, internal_problem_ask
, 0, internal_problem_no
830 demangler_vwarning (const char *file
, int line
, const char *fmt
, va_list ap
)
832 internal_vproblem (&demangler_warning_problem
, file
, line
, fmt
, ap
);
836 demangler_warning (const char *file
, int line
, const char *string
, ...)
840 va_start (ap
, string
);
841 demangler_vwarning (file
, line
, string
, ap
);
845 /* Dummy functions to keep add_prefix_cmd happy. */
848 set_internal_problem_cmd (char *args
, int from_tty
)
853 show_internal_problem_cmd (char *args
, int from_tty
)
857 /* When GDB reports an internal problem (error or warning) it gives
858 the user the opportunity to quit GDB and/or create a core file of
859 the current debug session. This function registers a few commands
860 that make it possible to specify that GDB should always or never
861 quit or create a core file, without asking. The commands look
864 maint set PROBLEM-NAME quit ask|yes|no
865 maint show PROBLEM-NAME quit
866 maint set PROBLEM-NAME corefile ask|yes|no
867 maint show PROBLEM-NAME corefile
869 Where PROBLEM-NAME is currently "internal-error" or
870 "internal-warning". */
873 add_internal_problem_command (struct internal_problem
*problem
)
875 struct cmd_list_element
**set_cmd_list
;
876 struct cmd_list_element
**show_cmd_list
;
880 set_cmd_list
= xmalloc (sizeof (*set_cmd_list
));
881 show_cmd_list
= xmalloc (sizeof (*set_cmd_list
));
882 *set_cmd_list
= NULL
;
883 *show_cmd_list
= NULL
;
885 set_doc
= xstrprintf (_("Configure what GDB does when %s is detected."),
888 show_doc
= xstrprintf (_("Show what GDB does when %s is detected."),
891 add_prefix_cmd ((char*) problem
->name
,
892 class_maintenance
, set_internal_problem_cmd
, set_doc
,
894 concat ("maintenance set ", problem
->name
, " ",
896 0/*allow-unknown*/, &maintenance_set_cmdlist
);
898 add_prefix_cmd ((char*) problem
->name
,
899 class_maintenance
, show_internal_problem_cmd
, show_doc
,
901 concat ("maintenance show ", problem
->name
, " ",
903 0/*allow-unknown*/, &maintenance_show_cmdlist
);
905 if (problem
->user_settable_should_quit
)
907 set_doc
= xstrprintf (_("Set whether GDB should quit "
908 "when an %s is detected"),
910 show_doc
= xstrprintf (_("Show whether GDB will quit "
911 "when an %s is detected"),
913 add_setshow_enum_cmd ("quit", class_maintenance
,
914 internal_problem_modes
,
915 &problem
->should_quit
,
928 if (problem
->user_settable_should_dump_core
)
930 set_doc
= xstrprintf (_("Set whether GDB should create a core "
931 "file of GDB when %s is detected"),
933 show_doc
= xstrprintf (_("Show whether GDB will create a core "
934 "file of GDB when %s is detected"),
936 add_setshow_enum_cmd ("corefile", class_maintenance
,
937 internal_problem_modes
,
938 &problem
->should_dump_core
,
952 /* Return a newly allocated string, containing the PREFIX followed
953 by the system error message for errno (separated by a colon).
955 The result must be deallocated after use. */
958 perror_string (const char *prefix
)
963 err
= safe_strerror (errno
);
964 combined
= (char *) xmalloc (strlen (err
) + strlen (prefix
) + 3);
965 strcpy (combined
, prefix
);
966 strcat (combined
, ": ");
967 strcat (combined
, err
);
972 /* Print the system error message for errno, and also mention STRING
973 as the file name for which the error was encountered. Use ERRCODE
974 for the thrown exception. Then return to command level. */
977 throw_perror_with_name (enum errors errcode
, const char *string
)
981 combined
= perror_string (string
);
982 make_cleanup (xfree
, combined
);
984 /* I understand setting these is a matter of taste. Still, some people
985 may clear errno but not know about bfd_error. Doing this here is not
987 bfd_set_error (bfd_error_no_error
);
990 throw_error (errcode
, _("%s."), combined
);
993 /* See throw_perror_with_name, ERRCODE defaults here to GENERIC_ERROR. */
996 perror_with_name (const char *string
)
998 throw_perror_with_name (GENERIC_ERROR
, string
);
1001 /* Same as perror_with_name except that it prints a warning instead
1002 of throwing an error. */
1005 perror_warning_with_name (const char *string
)
1009 combined
= perror_string (string
);
1010 warning (_("%s"), combined
);
1014 /* Print the system error message for ERRCODE, and also mention STRING
1015 as the file name for which the error was encountered. */
1018 print_sys_errmsg (const char *string
, int errcode
)
1023 err
= safe_strerror (errcode
);
1024 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
1025 strcpy (combined
, string
);
1026 strcat (combined
, ": ");
1027 strcat (combined
, err
);
1029 /* We want anything which was printed on stdout to come out first, before
1031 gdb_flush (gdb_stdout
);
1032 fprintf_unfiltered (gdb_stderr
, "%s.\n", combined
);
1035 /* Control C eventually causes this to be called, at a convenient time. */
1040 if (sync_quit_force_run
)
1042 sync_quit_force_run
= 0;
1043 quit_force (NULL
, stdin
== instream
);
1047 /* No steenking SIGINT will ever be coming our way when the
1048 program is resumed. Don't lie. */
1049 throw_quit ("Quit");
1052 /* If there is no terminal switching for this target, then we can't
1053 possibly get screwed by the lack of job control. */
1054 || !target_supports_terminal_ours ())
1055 throw_quit ("Quit");
1057 throw_quit ("Quit (expect signal SIGINT when the program is resumed)");
1062 /* Called when a memory allocation fails, with the number of bytes of
1063 memory requested in SIZE. */
1066 malloc_failure (long size
)
1070 internal_error (__FILE__
, __LINE__
,
1071 _("virtual memory exhausted: can't allocate %ld bytes."),
1076 internal_error (__FILE__
, __LINE__
, _("virtual memory exhausted."));
1080 /* My replacement for the read system call.
1081 Used like `read' but keeps going if `read' returns too soon. */
1084 myread (int desc
, char *addr
, int len
)
1091 val
= read (desc
, addr
, len
);
1095 return orglen
- len
;
1103 print_spaces (int n
, struct ui_file
*file
)
1105 fputs_unfiltered (n_spaces (n
), file
);
1108 /* Print a host address. */
1111 gdb_print_host_address (const void *addr
, struct ui_file
*stream
)
1113 fprintf_filtered (stream
, "%s", host_address_to_string (addr
));
1119 make_hex_string (const gdb_byte
*data
, size_t length
)
1121 char *result
= xmalloc (length
* 2 + 1);
1126 for (i
= 0; i
< length
; ++i
)
1127 p
+= xsnprintf (p
, 3, "%02x", data
[i
]);
1134 /* A cleanup function that calls regfree. */
1137 do_regfree_cleanup (void *r
)
1142 /* Create a new cleanup that frees the compiled regular expression R. */
1145 make_regfree_cleanup (regex_t
*r
)
1147 return make_cleanup (do_regfree_cleanup
, r
);
1150 /* Return an xmalloc'd error message resulting from a regular
1151 expression compilation failure. */
1154 get_regcomp_error (int code
, regex_t
*rx
)
1156 size_t length
= regerror (code
, rx
, NULL
, 0);
1157 char *result
= xmalloc (length
);
1159 regerror (code
, rx
, result
, length
);
1163 /* Compile a regexp and throw an exception on error. This returns a
1164 cleanup to free the resulting pattern on success. RX must not be
1168 compile_rx_or_error (regex_t
*pattern
, const char *rx
, const char *message
)
1172 gdb_assert (rx
!= NULL
);
1174 code
= regcomp (pattern
, rx
, REG_NOSUB
);
1177 char *err
= get_regcomp_error (code
, pattern
);
1179 make_cleanup (xfree
, err
);
1180 error (("%s: %s"), message
, err
);
1183 return make_regfree_cleanup (pattern
);
1188 /* This function supports the query, nquery, and yquery functions.
1189 Ask user a y-or-n question and return 0 if answer is no, 1 if
1190 answer is yes, or default the answer to the specified default
1191 (for yquery or nquery). DEFCHAR may be 'y' or 'n' to provide a
1192 default answer, or '\0' for no default.
1193 CTLSTR is the control string and should end in "? ". It should
1194 not say how to answer, because we do that.
1195 ARGS are the arguments passed along with the CTLSTR argument to
1198 static int ATTRIBUTE_PRINTF (1, 0)
1199 defaulted_query (const char *ctlstr
, const char defchar
, va_list args
)
1204 char def_answer
, not_def_answer
;
1205 char *y_string
, *n_string
, *question
, *prompt
;
1206 /* Used to add duration we waited for user to respond to
1207 prompt_for_continue_wait_time. */
1208 struct timeval prompt_started
, prompt_ended
, prompt_delta
;
1210 /* Set up according to which answer is the default. */
1211 if (defchar
== '\0')
1215 not_def_answer
= 'N';
1219 else if (defchar
== 'y')
1223 not_def_answer
= 'N';
1231 not_def_answer
= 'Y';
1236 /* Automatically answer the default value if the user did not want
1237 prompts or the command was issued with the server prefix. */
1238 if (!confirm
|| server_command
)
1241 /* If input isn't coming from the user directly, just say what
1242 question we're asking, and then answer the default automatically. This
1243 way, important error messages don't get lost when talking to GDB
1245 if (! input_from_terminal_p ())
1248 vfprintf_filtered (gdb_stdout
, ctlstr
, args
);
1250 printf_filtered (_("(%s or %s) [answered %c; "
1251 "input not from terminal]\n"),
1252 y_string
, n_string
, def_answer
);
1253 gdb_flush (gdb_stdout
);
1258 if (deprecated_query_hook
)
1260 return deprecated_query_hook (ctlstr
, args
);
1263 /* Format the question outside of the loop, to avoid reusing args. */
1264 question
= xstrvprintf (ctlstr
, args
);
1265 prompt
= xstrprintf (_("%s%s(%s or %s) %s"),
1266 annotation_level
> 1 ? "\n\032\032pre-query\n" : "",
1267 question
, y_string
, n_string
,
1268 annotation_level
> 1 ? "\n\032\032query\n" : "");
1271 /* Used for calculating time spend waiting for user. */
1272 gettimeofday (&prompt_started
, NULL
);
1276 char *response
, answer
;
1278 gdb_flush (gdb_stdout
);
1279 response
= gdb_readline_wrapper (prompt
);
1281 if (response
== NULL
) /* C-d */
1283 printf_filtered ("EOF [assumed %c]\n", def_answer
);
1288 answer
= response
[0];
1293 /* Check answer. For the non-default, the user must specify
1294 the non-default explicitly. */
1295 if (answer
== not_def_answer
)
1297 retval
= !def_value
;
1300 /* Otherwise, if a default was specified, the user may either
1301 specify the required input or have it default by entering
1303 if (answer
== def_answer
1304 || (defchar
!= '\0' && answer
== '\0'))
1309 /* Invalid entries are not defaulted and require another selection. */
1310 printf_filtered (_("Please answer %s or %s.\n"),
1311 y_string
, n_string
);
1314 /* Add time spend in this routine to prompt_for_continue_wait_time. */
1315 gettimeofday (&prompt_ended
, NULL
);
1316 timeval_sub (&prompt_delta
, &prompt_ended
, &prompt_started
);
1317 timeval_add (&prompt_for_continue_wait_time
,
1318 &prompt_for_continue_wait_time
, &prompt_delta
);
1321 if (annotation_level
> 1)
1322 printf_filtered (("\n\032\032post-query\n"));
1327 /* Ask user a y-or-n question and return 0 if answer is no, 1 if
1328 answer is yes, or 0 if answer is defaulted.
1329 Takes three args which are given to printf to print the question.
1330 The first, a control string, should end in "? ".
1331 It should not say how to answer, because we do that. */
1334 nquery (const char *ctlstr
, ...)
1339 va_start (args
, ctlstr
);
1340 ret
= defaulted_query (ctlstr
, 'n', args
);
1345 /* Ask user a y-or-n question and return 0 if answer is no, 1 if
1346 answer is yes, or 1 if answer is defaulted.
1347 Takes three args which are given to printf to print the question.
1348 The first, a control string, should end in "? ".
1349 It should not say how to answer, because we do that. */
1352 yquery (const char *ctlstr
, ...)
1357 va_start (args
, ctlstr
);
1358 ret
= defaulted_query (ctlstr
, 'y', args
);
1363 /* Ask user a y-or-n question and return 1 iff answer is yes.
1364 Takes three args which are given to printf to print the question.
1365 The first, a control string, should end in "? ".
1366 It should not say how to answer, because we do that. */
1369 query (const char *ctlstr
, ...)
1374 va_start (args
, ctlstr
);
1375 ret
= defaulted_query (ctlstr
, '\0', args
);
1380 /* A helper for parse_escape that converts a host character to a
1381 target character. C is the host character. If conversion is
1382 possible, then the target character is stored in *TARGET_C and the
1383 function returns 1. Otherwise, the function returns 0. */
1386 host_char_to_target (struct gdbarch
*gdbarch
, int c
, int *target_c
)
1388 struct obstack host_data
;
1390 struct cleanup
*cleanups
;
1393 obstack_init (&host_data
);
1394 cleanups
= make_cleanup_obstack_free (&host_data
);
1396 convert_between_encodings (target_charset (gdbarch
), host_charset (),
1397 (gdb_byte
*) &the_char
, 1, 1,
1398 &host_data
, translit_none
);
1400 if (obstack_object_size (&host_data
) == 1)
1403 *target_c
= *(char *) obstack_base (&host_data
);
1406 do_cleanups (cleanups
);
1410 /* Parse a C escape sequence. STRING_PTR points to a variable
1411 containing a pointer to the string to parse. That pointer
1412 should point to the character after the \. That pointer
1413 is updated past the characters we use. The value of the
1414 escape sequence is returned.
1416 A negative value means the sequence \ newline was seen,
1417 which is supposed to be equivalent to nothing at all.
1419 If \ is followed by a null character, we return a negative
1420 value and leave the string pointer pointing at the null character.
1422 If \ is followed by 000, we return 0 and leave the string pointer
1423 after the zeros. A value of 0 does not mean end of string. */
1426 parse_escape (struct gdbarch
*gdbarch
, const char **string_ptr
)
1428 int target_char
= -2; /* Initialize to avoid GCC warnings. */
1429 int c
= *(*string_ptr
)++;
1448 int i
= host_hex_value (c
);
1453 if (isdigit (c
) && c
!= '8' && c
!= '9')
1457 i
+= host_hex_value (c
);
1493 if (!host_char_to_target (gdbarch
, c
, &target_char
))
1494 error (_("The escape sequence `\\%c' is equivalent to plain `%c',"
1495 " which has no equivalent\nin the `%s' character set."),
1496 c
, c
, target_charset (gdbarch
));
1500 /* Print the character C on STREAM as part of the contents of a literal
1501 string whose delimiter is QUOTER. Note that this routine should only
1502 be call for printing things which are independent of the language
1503 of the program being debugged.
1505 printchar will normally escape backslashes and instances of QUOTER. If
1506 QUOTER is 0, printchar won't escape backslashes or any quoting character.
1507 As a side effect, if you pass the backslash character as the QUOTER,
1508 printchar will escape backslashes as usual, but not any other quoting
1512 printchar (int c
, void (*do_fputs
) (const char *, struct ui_file
*),
1513 void (*do_fprintf
) (struct ui_file
*, const char *, ...)
1514 ATTRIBUTE_FPTR_PRINTF_2
, struct ui_file
*stream
, int quoter
)
1516 c
&= 0xFF; /* Avoid sign bit follies */
1518 if (c
< 0x20 || /* Low control chars */
1519 (c
>= 0x7F && c
< 0xA0) || /* DEL, High controls */
1520 (sevenbit_strings
&& c
>= 0x80))
1521 { /* high order bit set */
1525 do_fputs ("\\n", stream
);
1528 do_fputs ("\\b", stream
);
1531 do_fputs ("\\t", stream
);
1534 do_fputs ("\\f", stream
);
1537 do_fputs ("\\r", stream
);
1540 do_fputs ("\\e", stream
);
1543 do_fputs ("\\a", stream
);
1546 do_fprintf (stream
, "\\%.3o", (unsigned int) c
);
1552 if (quoter
!= 0 && (c
== '\\' || c
== quoter
))
1553 do_fputs ("\\", stream
);
1554 do_fprintf (stream
, "%c", c
);
1558 /* Print the character C on STREAM as part of the contents of a
1559 literal string whose delimiter is QUOTER. Note that these routines
1560 should only be call for printing things which are independent of
1561 the language of the program being debugged. */
1564 fputstr_filtered (const char *str
, int quoter
, struct ui_file
*stream
)
1567 printchar (*str
++, fputs_filtered
, fprintf_filtered
, stream
, quoter
);
1571 fputstr_unfiltered (const char *str
, int quoter
, struct ui_file
*stream
)
1574 printchar (*str
++, fputs_unfiltered
, fprintf_unfiltered
, stream
, quoter
);
1578 fputstrn_filtered (const char *str
, int n
, int quoter
,
1579 struct ui_file
*stream
)
1583 for (i
= 0; i
< n
; i
++)
1584 printchar (str
[i
], fputs_filtered
, fprintf_filtered
, stream
, quoter
);
1588 fputstrn_unfiltered (const char *str
, int n
, int quoter
,
1589 struct ui_file
*stream
)
1593 for (i
= 0; i
< n
; i
++)
1594 printchar (str
[i
], fputs_unfiltered
, fprintf_unfiltered
, stream
, quoter
);
1598 /* Number of lines per page or UINT_MAX if paging is disabled. */
1599 static unsigned int lines_per_page
;
1601 show_lines_per_page (struct ui_file
*file
, int from_tty
,
1602 struct cmd_list_element
*c
, const char *value
)
1604 fprintf_filtered (file
,
1605 _("Number of lines gdb thinks are in a page is %s.\n"),
1609 /* Number of chars per line or UINT_MAX if line folding is disabled. */
1610 static unsigned int chars_per_line
;
1612 show_chars_per_line (struct ui_file
*file
, int from_tty
,
1613 struct cmd_list_element
*c
, const char *value
)
1615 fprintf_filtered (file
,
1616 _("Number of characters gdb thinks "
1617 "are in a line is %s.\n"),
1621 /* Current count of lines printed on this page, chars on this line. */
1622 static unsigned int lines_printed
, chars_printed
;
1624 /* Buffer and start column of buffered text, for doing smarter word-
1625 wrapping. When someone calls wrap_here(), we start buffering output
1626 that comes through fputs_filtered(). If we see a newline, we just
1627 spit it out and forget about the wrap_here(). If we see another
1628 wrap_here(), we spit it out and remember the newer one. If we see
1629 the end of the line, we spit out a newline, the indent, and then
1630 the buffered output. */
1632 /* Malloc'd buffer with chars_per_line+2 bytes. Contains characters which
1633 are waiting to be output (they have already been counted in chars_printed).
1634 When wrap_buffer[0] is null, the buffer is empty. */
1635 static char *wrap_buffer
;
1637 /* Pointer in wrap_buffer to the next character to fill. */
1638 static char *wrap_pointer
;
1640 /* String to indent by if the wrap occurs. Must not be NULL if wrap_column
1642 static char *wrap_indent
;
1644 /* Column number on the screen where wrap_buffer begins, or 0 if wrapping
1645 is not in effect. */
1646 static int wrap_column
;
1649 /* Inialize the number of lines per page and chars per line. */
1652 init_page_info (void)
1656 lines_per_page
= UINT_MAX
;
1657 chars_per_line
= UINT_MAX
;
1661 if (!tui_get_command_dimension (&chars_per_line
, &lines_per_page
))
1666 #if defined(__GO32__)
1667 rows
= ScreenRows ();
1668 cols
= ScreenCols ();
1669 lines_per_page
= rows
;
1670 chars_per_line
= cols
;
1672 /* Make sure Readline has initialized its terminal settings. */
1673 rl_reset_terminal (NULL
);
1675 /* Get the screen size from Readline. */
1676 rl_get_screen_size (&rows
, &cols
);
1677 lines_per_page
= rows
;
1678 chars_per_line
= cols
;
1680 /* Readline should have fetched the termcap entry for us.
1681 Only try to use tgetnum function if rl_get_screen_size
1682 did not return a useful value. */
1683 if (((rows
<= 0) && (tgetnum ("li") < 0))
1684 /* Also disable paging if inside EMACS. */
1685 || getenv ("EMACS"))
1687 /* The number of lines per page is not mentioned in the terminal
1688 description or EMACS evironment variable is set. This probably
1689 means that paging is not useful, so disable paging. */
1690 lines_per_page
= UINT_MAX
;
1693 /* If the output is not a terminal, don't paginate it. */
1694 if (!ui_file_isatty (gdb_stdout
))
1695 lines_per_page
= UINT_MAX
;
1699 /* We handle SIGWINCH ourselves. */
1700 rl_catch_sigwinch
= 0;
1706 /* Return nonzero if filtered printing is initialized. */
1708 filtered_printing_initialized (void)
1710 return wrap_buffer
!= NULL
;
1713 /* Helper for make_cleanup_restore_page_info. */
1716 do_restore_page_info_cleanup (void *arg
)
1722 /* Provide cleanup for restoring the terminal size. */
1725 make_cleanup_restore_page_info (void)
1727 struct cleanup
*back_to
;
1729 back_to
= make_cleanup (do_restore_page_info_cleanup
, NULL
);
1730 make_cleanup_restore_uinteger (&lines_per_page
);
1731 make_cleanup_restore_uinteger (&chars_per_line
);
1736 /* Temporarily set BATCH_FLAG and the associated unlimited terminal size.
1737 Provide cleanup for restoring the original state. */
1740 set_batch_flag_and_make_cleanup_restore_page_info (void)
1742 struct cleanup
*back_to
= make_cleanup_restore_page_info ();
1744 make_cleanup_restore_integer (&batch_flag
);
1751 /* Set the screen size based on LINES_PER_PAGE and CHARS_PER_LINE. */
1754 set_screen_size (void)
1756 int rows
= lines_per_page
;
1757 int cols
= chars_per_line
;
1765 /* Update Readline's idea of the terminal size. */
1766 rl_set_screen_size (rows
, cols
);
1769 /* Reinitialize WRAP_BUFFER according to the current value of
1775 if (chars_per_line
== 0)
1780 wrap_buffer
= (char *) xmalloc (chars_per_line
+ 2);
1781 wrap_buffer
[0] = '\0';
1784 wrap_buffer
= (char *) xrealloc (wrap_buffer
, chars_per_line
+ 2);
1785 wrap_pointer
= wrap_buffer
; /* Start it at the beginning. */
1789 set_width_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
1796 set_height_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
1804 set_screen_width_and_height (int width
, int height
)
1806 lines_per_page
= height
;
1807 chars_per_line
= width
;
1813 /* Wait, so the user can read what's on the screen. Prompt the user
1814 to continue by pressing RETURN. */
1817 prompt_for_continue (void)
1820 char cont_prompt
[120];
1821 /* Used to add duration we waited for user to respond to
1822 prompt_for_continue_wait_time. */
1823 struct timeval prompt_started
, prompt_ended
, prompt_delta
;
1825 gettimeofday (&prompt_started
, NULL
);
1827 if (annotation_level
> 1)
1828 printf_unfiltered (("\n\032\032pre-prompt-for-continue\n"));
1830 strcpy (cont_prompt
,
1831 "---Type <return> to continue, or q <return> to quit---");
1832 if (annotation_level
> 1)
1833 strcat (cont_prompt
, "\n\032\032prompt-for-continue\n");
1835 /* We must do this *before* we call gdb_readline, else it will eventually
1836 call us -- thinking that we're trying to print beyond the end of the
1838 reinitialize_more_filter ();
1843 /* We'll need to handle input. */
1844 target_terminal_ours ();
1846 /* On a real operating system, the user can quit with SIGINT.
1849 'q' is provided on all systems so users don't have to change habits
1850 from system to system, and because telling them what to do in
1851 the prompt is more user-friendly than expecting them to think of
1853 /* Call readline, not gdb_readline, because GO32 readline handles control-C
1854 whereas control-C to gdb_readline will cause the user to get dumped
1856 ignore
= gdb_readline_wrapper (cont_prompt
);
1858 /* Add time spend in this routine to prompt_for_continue_wait_time. */
1859 gettimeofday (&prompt_ended
, NULL
);
1860 timeval_sub (&prompt_delta
, &prompt_ended
, &prompt_started
);
1861 timeval_add (&prompt_for_continue_wait_time
,
1862 &prompt_for_continue_wait_time
, &prompt_delta
);
1864 if (annotation_level
> 1)
1865 printf_unfiltered (("\n\032\032post-prompt-for-continue\n"));
1871 while (*p
== ' ' || *p
== '\t')
1879 /* Now we have to do this again, so that GDB will know that it doesn't
1880 need to save the ---Type <return>--- line at the top of the screen. */
1881 reinitialize_more_filter ();
1883 dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */
1886 /* Initalize timer to keep track of how long we waited for the user. */
1889 reset_prompt_for_continue_wait_time (void)
1891 static const struct timeval zero_timeval
= { 0 };
1893 prompt_for_continue_wait_time
= zero_timeval
;
1896 /* Fetch the cumulative time spent in prompt_for_continue. */
1899 get_prompt_for_continue_wait_time (void)
1901 return prompt_for_continue_wait_time
;
1904 /* Reinitialize filter; ie. tell it to reset to original values. */
1907 reinitialize_more_filter (void)
1913 /* Indicate that if the next sequence of characters overflows the line,
1914 a newline should be inserted here rather than when it hits the end.
1915 If INDENT is non-null, it is a string to be printed to indent the
1916 wrapped part on the next line. INDENT must remain accessible until
1917 the next call to wrap_here() or until a newline is printed through
1920 If the line is already overfull, we immediately print a newline and
1921 the indentation, and disable further wrapping.
1923 If we don't know the width of lines, but we know the page height,
1924 we must not wrap words, but should still keep track of newlines
1925 that were explicitly printed.
1927 INDENT should not contain tabs, as that will mess up the char count
1928 on the next line. FIXME.
1930 This routine is guaranteed to force out any output which has been
1931 squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be
1932 used to force out output from the wrap_buffer. */
1935 wrap_here (char *indent
)
1937 /* This should have been allocated, but be paranoid anyway. */
1939 internal_error (__FILE__
, __LINE__
,
1940 _("failed internal consistency check"));
1944 *wrap_pointer
= '\0';
1945 fputs_unfiltered (wrap_buffer
, gdb_stdout
);
1947 wrap_pointer
= wrap_buffer
;
1948 wrap_buffer
[0] = '\0';
1949 if (chars_per_line
== UINT_MAX
) /* No line overflow checking. */
1953 else if (chars_printed
>= chars_per_line
)
1955 puts_filtered ("\n");
1957 puts_filtered (indent
);
1962 wrap_column
= chars_printed
;
1966 wrap_indent
= indent
;
1970 /* Print input string to gdb_stdout, filtered, with wrap,
1971 arranging strings in columns of n chars. String can be
1972 right or left justified in the column. Never prints
1973 trailing spaces. String should never be longer than
1974 width. FIXME: this could be useful for the EXAMINE
1975 command, which currently doesn't tabulate very well. */
1978 puts_filtered_tabular (char *string
, int width
, int right
)
1984 gdb_assert (chars_per_line
> 0);
1985 if (chars_per_line
== UINT_MAX
)
1987 fputs_filtered (string
, gdb_stdout
);
1988 fputs_filtered ("\n", gdb_stdout
);
1992 if (((chars_printed
- 1) / width
+ 2) * width
>= chars_per_line
)
1993 fputs_filtered ("\n", gdb_stdout
);
1995 if (width
>= chars_per_line
)
1996 width
= chars_per_line
- 1;
1998 stringlen
= strlen (string
);
2000 if (chars_printed
> 0)
2001 spaces
= width
- (chars_printed
- 1) % width
- 1;
2003 spaces
+= width
- stringlen
;
2005 spacebuf
= alloca (spaces
+ 1);
2006 spacebuf
[spaces
] = '\0';
2008 spacebuf
[spaces
] = ' ';
2010 fputs_filtered (spacebuf
, gdb_stdout
);
2011 fputs_filtered (string
, gdb_stdout
);
2015 /* Ensure that whatever gets printed next, using the filtered output
2016 commands, starts at the beginning of the line. I.e. if there is
2017 any pending output for the current line, flush it and start a new
2018 line. Otherwise do nothing. */
2023 if (chars_printed
> 0)
2025 puts_filtered ("\n");
2030 /* Like fputs but if FILTER is true, pause after every screenful.
2032 Regardless of FILTER can wrap at points other than the final
2033 character of a line.
2035 Unlike fputs, fputs_maybe_filtered does not return a value.
2036 It is OK for LINEBUFFER to be NULL, in which case just don't print
2039 Note that a longjmp to top level may occur in this routine (only if
2040 FILTER is true) (since prompt_for_continue may do so) so this
2041 routine should not be called when cleanups are not in place. */
2044 fputs_maybe_filtered (const char *linebuffer
, struct ui_file
*stream
,
2047 const char *lineptr
;
2049 if (linebuffer
== 0)
2052 /* Don't do any filtering if it is disabled. */
2053 if (stream
!= gdb_stdout
2054 || !pagination_enabled
2056 || (lines_per_page
== UINT_MAX
&& chars_per_line
== UINT_MAX
)
2057 || top_level_interpreter () == NULL
2058 || ui_out_is_mi_like_p (interp_ui_out (top_level_interpreter ())))
2060 fputs_unfiltered (linebuffer
, stream
);
2064 /* Go through and output each character. Show line extension
2065 when this is necessary; prompt user for new page when this is
2068 lineptr
= linebuffer
;
2071 /* Possible new page. */
2072 if (filter
&& (lines_printed
>= lines_per_page
- 1))
2073 prompt_for_continue ();
2075 while (*lineptr
&& *lineptr
!= '\n')
2077 /* Print a single line. */
2078 if (*lineptr
== '\t')
2081 *wrap_pointer
++ = '\t';
2083 fputc_unfiltered ('\t', stream
);
2084 /* Shifting right by 3 produces the number of tab stops
2085 we have already passed, and then adding one and
2086 shifting left 3 advances to the next tab stop. */
2087 chars_printed
= ((chars_printed
>> 3) + 1) << 3;
2093 *wrap_pointer
++ = *lineptr
;
2095 fputc_unfiltered (*lineptr
, stream
);
2100 if (chars_printed
>= chars_per_line
)
2102 unsigned int save_chars
= chars_printed
;
2106 /* If we aren't actually wrapping, don't output newline --
2107 if chars_per_line is right, we probably just overflowed
2108 anyway; if it's wrong, let us keep going. */
2110 fputc_unfiltered ('\n', stream
);
2112 /* Possible new page. */
2113 if (lines_printed
>= lines_per_page
- 1)
2114 prompt_for_continue ();
2116 /* Now output indentation and wrapped string. */
2119 fputs_unfiltered (wrap_indent
, stream
);
2120 *wrap_pointer
= '\0'; /* Null-terminate saved stuff, */
2121 fputs_unfiltered (wrap_buffer
, stream
); /* and eject it. */
2122 /* FIXME, this strlen is what prevents wrap_indent from
2123 containing tabs. However, if we recurse to print it
2124 and count its chars, we risk trouble if wrap_indent is
2125 longer than (the user settable) chars_per_line.
2126 Note also that this can set chars_printed > chars_per_line
2127 if we are printing a long string. */
2128 chars_printed
= strlen (wrap_indent
)
2129 + (save_chars
- wrap_column
);
2130 wrap_pointer
= wrap_buffer
; /* Reset buffer */
2131 wrap_buffer
[0] = '\0';
2132 wrap_column
= 0; /* And disable fancy wrap */
2137 if (*lineptr
== '\n')
2140 wrap_here ((char *) 0); /* Spit out chars, cancel
2143 fputc_unfiltered ('\n', stream
);
2150 fputs_filtered (const char *linebuffer
, struct ui_file
*stream
)
2152 fputs_maybe_filtered (linebuffer
, stream
, 1);
2156 putchar_unfiltered (int c
)
2160 ui_file_write (gdb_stdout
, &buf
, 1);
2164 /* Write character C to gdb_stdout using GDB's paging mechanism and return C.
2165 May return nonlocally. */
2168 putchar_filtered (int c
)
2170 return fputc_filtered (c
, gdb_stdout
);
2174 fputc_unfiltered (int c
, struct ui_file
*stream
)
2178 ui_file_write (stream
, &buf
, 1);
2183 fputc_filtered (int c
, struct ui_file
*stream
)
2189 fputs_filtered (buf
, stream
);
2193 /* puts_debug is like fputs_unfiltered, except it prints special
2194 characters in printable fashion. */
2197 puts_debug (char *prefix
, char *string
, char *suffix
)
2201 /* Print prefix and suffix after each line. */
2202 static int new_line
= 1;
2203 static int return_p
= 0;
2204 static char *prev_prefix
= "";
2205 static char *prev_suffix
= "";
2207 if (*string
== '\n')
2210 /* If the prefix is changing, print the previous suffix, a new line,
2211 and the new prefix. */
2212 if ((return_p
|| (strcmp (prev_prefix
, prefix
) != 0)) && !new_line
)
2214 fputs_unfiltered (prev_suffix
, gdb_stdlog
);
2215 fputs_unfiltered ("\n", gdb_stdlog
);
2216 fputs_unfiltered (prefix
, gdb_stdlog
);
2219 /* Print prefix if we printed a newline during the previous call. */
2223 fputs_unfiltered (prefix
, gdb_stdlog
);
2226 prev_prefix
= prefix
;
2227 prev_suffix
= suffix
;
2229 /* Output characters in a printable format. */
2230 while ((ch
= *string
++) != '\0')
2236 fputc_unfiltered (ch
, gdb_stdlog
);
2239 fprintf_unfiltered (gdb_stdlog
, "\\x%02x", ch
& 0xff);
2243 fputs_unfiltered ("\\\\", gdb_stdlog
);
2246 fputs_unfiltered ("\\b", gdb_stdlog
);
2249 fputs_unfiltered ("\\f", gdb_stdlog
);
2253 fputs_unfiltered ("\\n", gdb_stdlog
);
2256 fputs_unfiltered ("\\r", gdb_stdlog
);
2259 fputs_unfiltered ("\\t", gdb_stdlog
);
2262 fputs_unfiltered ("\\v", gdb_stdlog
);
2266 return_p
= ch
== '\r';
2269 /* Print suffix if we printed a newline. */
2272 fputs_unfiltered (suffix
, gdb_stdlog
);
2273 fputs_unfiltered ("\n", gdb_stdlog
);
2278 /* Print a variable number of ARGS using format FORMAT. If this
2279 information is going to put the amount written (since the last call
2280 to REINITIALIZE_MORE_FILTER or the last page break) over the page size,
2281 call prompt_for_continue to get the users permision to continue.
2283 Unlike fprintf, this function does not return a value.
2285 We implement three variants, vfprintf (takes a vararg list and stream),
2286 fprintf (takes a stream to write on), and printf (the usual).
2288 Note also that a longjmp to top level may occur in this routine
2289 (since prompt_for_continue may do so) so this routine should not be
2290 called when cleanups are not in place. */
2293 vfprintf_maybe_filtered (struct ui_file
*stream
, const char *format
,
2294 va_list args
, int filter
)
2297 struct cleanup
*old_cleanups
;
2299 linebuffer
= xstrvprintf (format
, args
);
2300 old_cleanups
= make_cleanup (xfree
, linebuffer
);
2301 fputs_maybe_filtered (linebuffer
, stream
, filter
);
2302 do_cleanups (old_cleanups
);
2307 vfprintf_filtered (struct ui_file
*stream
, const char *format
, va_list args
)
2309 vfprintf_maybe_filtered (stream
, format
, args
, 1);
2313 vfprintf_unfiltered (struct ui_file
*stream
, const char *format
, va_list args
)
2316 struct cleanup
*old_cleanups
;
2318 linebuffer
= xstrvprintf (format
, args
);
2319 old_cleanups
= make_cleanup (xfree
, linebuffer
);
2320 if (debug_timestamp
&& stream
== gdb_stdlog
)
2326 gettimeofday (&tm
, NULL
);
2328 len
= strlen (linebuffer
);
2329 need_nl
= (len
> 0 && linebuffer
[len
- 1] != '\n');
2331 timestamp
= xstrprintf ("%ld:%ld %s%s",
2332 (long) tm
.tv_sec
, (long) tm
.tv_usec
,
2334 need_nl
? "\n": "");
2335 make_cleanup (xfree
, timestamp
);
2336 fputs_unfiltered (timestamp
, stream
);
2339 fputs_unfiltered (linebuffer
, stream
);
2340 do_cleanups (old_cleanups
);
2344 vprintf_filtered (const char *format
, va_list args
)
2346 vfprintf_maybe_filtered (gdb_stdout
, format
, args
, 1);
2350 vprintf_unfiltered (const char *format
, va_list args
)
2352 vfprintf_unfiltered (gdb_stdout
, format
, args
);
2356 fprintf_filtered (struct ui_file
*stream
, const char *format
, ...)
2360 va_start (args
, format
);
2361 vfprintf_filtered (stream
, format
, args
);
2366 fprintf_unfiltered (struct ui_file
*stream
, const char *format
, ...)
2370 va_start (args
, format
);
2371 vfprintf_unfiltered (stream
, format
, args
);
2375 /* Like fprintf_filtered, but prints its result indented.
2376 Called as fprintfi_filtered (spaces, stream, format, ...); */
2379 fprintfi_filtered (int spaces
, struct ui_file
*stream
, const char *format
,
2384 va_start (args
, format
);
2385 print_spaces_filtered (spaces
, stream
);
2387 vfprintf_filtered (stream
, format
, args
);
2393 printf_filtered (const char *format
, ...)
2397 va_start (args
, format
);
2398 vfprintf_filtered (gdb_stdout
, format
, args
);
2404 printf_unfiltered (const char *format
, ...)
2408 va_start (args
, format
);
2409 vfprintf_unfiltered (gdb_stdout
, format
, args
);
2413 /* Like printf_filtered, but prints it's result indented.
2414 Called as printfi_filtered (spaces, format, ...); */
2417 printfi_filtered (int spaces
, const char *format
, ...)
2421 va_start (args
, format
);
2422 print_spaces_filtered (spaces
, gdb_stdout
);
2423 vfprintf_filtered (gdb_stdout
, format
, args
);
2427 /* Easy -- but watch out!
2429 This routine is *not* a replacement for puts()! puts() appends a newline.
2430 This one doesn't, and had better not! */
2433 puts_filtered (const char *string
)
2435 fputs_filtered (string
, gdb_stdout
);
2439 puts_unfiltered (const char *string
)
2441 fputs_unfiltered (string
, gdb_stdout
);
2444 /* Return a pointer to N spaces and a null. The pointer is good
2445 until the next call to here. */
2450 static char *spaces
= 0;
2451 static int max_spaces
= -1;
2457 spaces
= (char *) xmalloc (n
+ 1);
2458 for (t
= spaces
+ n
; t
!= spaces
;)
2464 return spaces
+ max_spaces
- n
;
2467 /* Print N spaces. */
2469 print_spaces_filtered (int n
, struct ui_file
*stream
)
2471 fputs_filtered (n_spaces (n
), stream
);
2474 /* C++/ObjC demangler stuff. */
2476 /* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language
2477 LANG, using demangling args ARG_MODE, and print it filtered to STREAM.
2478 If the name is not mangled, or the language for the name is unknown, or
2479 demangling is off, the name is printed in its "raw" form. */
2482 fprintf_symbol_filtered (struct ui_file
*stream
, const char *name
,
2483 enum language lang
, int arg_mode
)
2489 /* If user wants to see raw output, no problem. */
2492 fputs_filtered (name
, stream
);
2496 demangled
= language_demangle (language_def (lang
), name
, arg_mode
);
2497 fputs_filtered (demangled
? demangled
: name
, stream
);
2498 if (demangled
!= NULL
)
2506 /* Do a strcmp() type operation on STRING1 and STRING2, ignoring any
2507 differences in whitespace. Returns 0 if they match, non-zero if they
2508 don't (slightly different than strcmp()'s range of return values).
2510 As an extra hack, string1=="FOO(ARGS)" matches string2=="FOO".
2511 This "feature" is useful when searching for matching C++ function names
2512 (such as if the user types 'break FOO', where FOO is a mangled C++
2516 strcmp_iw (const char *string1
, const char *string2
)
2518 while ((*string1
!= '\0') && (*string2
!= '\0'))
2520 while (isspace (*string1
))
2524 while (isspace (*string2
))
2528 if (case_sensitivity
== case_sensitive_on
&& *string1
!= *string2
)
2530 if (case_sensitivity
== case_sensitive_off
2531 && (tolower ((unsigned char) *string1
)
2532 != tolower ((unsigned char) *string2
)))
2534 if (*string1
!= '\0')
2540 return (*string1
!= '\0' && *string1
!= '(') || (*string2
!= '\0');
2543 /* This is like strcmp except that it ignores whitespace and treats
2544 '(' as the first non-NULL character in terms of ordering. Like
2545 strcmp (and unlike strcmp_iw), it returns negative if STRING1 <
2546 STRING2, 0 if STRING2 = STRING2, and positive if STRING1 > STRING2
2547 according to that ordering.
2549 If a list is sorted according to this function and if you want to
2550 find names in the list that match some fixed NAME according to
2551 strcmp_iw(LIST_ELT, NAME), then the place to start looking is right
2552 where this function would put NAME.
2554 This function must be neutral to the CASE_SENSITIVITY setting as the user
2555 may choose it during later lookup. Therefore this function always sorts
2556 primarily case-insensitively and secondarily case-sensitively.
2558 Here are some examples of why using strcmp to sort is a bad idea:
2562 Say your partial symtab contains: "foo<char *>", "goo". Then, if
2563 we try to do a search for "foo<char*>", strcmp will locate this
2564 after "foo<char *>" and before "goo". Then lookup_partial_symbol
2565 will start looking at strings beginning with "goo", and will never
2566 see the correct match of "foo<char *>".
2568 Parenthesis example:
2570 In practice, this is less like to be an issue, but I'll give it a
2571 shot. Let's assume that '$' is a legitimate character to occur in
2572 symbols. (Which may well even be the case on some systems.) Then
2573 say that the partial symbol table contains "foo$" and "foo(int)".
2574 strcmp will put them in this order, since '$' < '('. Now, if the
2575 user searches for "foo", then strcmp will sort "foo" before "foo$".
2576 Then lookup_partial_symbol will notice that strcmp_iw("foo$",
2577 "foo") is false, so it won't proceed to the actual match of
2578 "foo(int)" with "foo". */
2581 strcmp_iw_ordered (const char *string1
, const char *string2
)
2583 const char *saved_string1
= string1
, *saved_string2
= string2
;
2584 enum case_sensitivity case_pass
= case_sensitive_off
;
2588 /* C1 and C2 are valid only if *string1 != '\0' && *string2 != '\0'.
2589 Provide stub characters if we are already at the end of one of the
2591 char c1
= 'X', c2
= 'X';
2593 while (*string1
!= '\0' && *string2
!= '\0')
2595 while (isspace (*string1
))
2597 while (isspace (*string2
))
2602 case case_sensitive_off
:
2603 c1
= tolower ((unsigned char) *string1
);
2604 c2
= tolower ((unsigned char) *string2
);
2606 case case_sensitive_on
:
2614 if (*string1
!= '\0')
2623 /* Characters are non-equal unless they're both '\0'; we want to
2624 make sure we get the comparison right according to our
2625 comparison in the cases where one of them is '\0' or '('. */
2627 if (*string2
== '\0')
2632 if (*string2
== '\0')
2637 if (*string2
== '\0' || *string2
== '(')
2646 if (case_pass
== case_sensitive_on
)
2649 /* Otherwise the strings were equal in case insensitive way, make
2650 a more fine grained comparison in a case sensitive way. */
2652 case_pass
= case_sensitive_on
;
2653 string1
= saved_string1
;
2654 string2
= saved_string2
;
2658 /* A simple comparison function with opposite semantics to strcmp. */
2661 streq (const char *lhs
, const char *rhs
)
2663 return !strcmp (lhs
, rhs
);
2669 ** Answer whether string_to_compare is a full or partial match to
2670 ** template_string. The partial match must be in sequence starting
2674 subset_compare (char *string_to_compare
, char *template_string
)
2678 if (template_string
!= (char *) NULL
&& string_to_compare
!= (char *) NULL
2679 && strlen (string_to_compare
) <= strlen (template_string
))
2681 (startswith (template_string
, string_to_compare
));
2688 show_debug_timestamp (struct ui_file
*file
, int from_tty
,
2689 struct cmd_list_element
*c
, const char *value
)
2691 fprintf_filtered (file
, _("Timestamping debugging messages is %s.\n"),
2697 initialize_utils (void)
2699 add_setshow_uinteger_cmd ("width", class_support
, &chars_per_line
, _("\
2700 Set number of characters where GDB should wrap lines of its output."), _("\
2701 Show number of characters where GDB should wrap lines of its output."), _("\
2702 This affects where GDB wraps its output to fit the screen width.\n\
2703 Setting this to \"unlimited\" or zero prevents GDB from wrapping its output."),
2705 show_chars_per_line
,
2706 &setlist
, &showlist
);
2708 add_setshow_uinteger_cmd ("height", class_support
, &lines_per_page
, _("\
2709 Set number of lines in a page for GDB output pagination."), _("\
2710 Show number of lines in a page for GDB output pagination."), _("\
2711 This affects the number of lines after which GDB will pause\n\
2712 its output and ask you whether to continue.\n\
2713 Setting this to \"unlimited\" or zero causes GDB never pause during output."),
2715 show_lines_per_page
,
2716 &setlist
, &showlist
);
2718 add_setshow_boolean_cmd ("pagination", class_support
,
2719 &pagination_enabled
, _("\
2720 Set state of GDB output pagination."), _("\
2721 Show state of GDB output pagination."), _("\
2722 When pagination is ON, GDB pauses at end of each screenful of\n\
2723 its output and asks you whether to continue.\n\
2724 Turning pagination off is an alternative to \"set height unlimited\"."),
2726 show_pagination_enabled
,
2727 &setlist
, &showlist
);
2729 add_setshow_boolean_cmd ("sevenbit-strings", class_support
,
2730 &sevenbit_strings
, _("\
2731 Set printing of 8-bit characters in strings as \\nnn."), _("\
2732 Show printing of 8-bit characters in strings as \\nnn."), NULL
,
2734 show_sevenbit_strings
,
2735 &setprintlist
, &showprintlist
);
2737 add_setshow_boolean_cmd ("timestamp", class_maintenance
,
2738 &debug_timestamp
, _("\
2739 Set timestamping of debugging messages."), _("\
2740 Show timestamping of debugging messages."), _("\
2741 When set, debugging messages will be marked with seconds and microseconds."),
2743 show_debug_timestamp
,
2744 &setdebuglist
, &showdebuglist
);
2748 paddress (struct gdbarch
*gdbarch
, CORE_ADDR addr
)
2750 /* Truncate address to the size of a target address, avoiding shifts
2751 larger or equal than the width of a CORE_ADDR. The local
2752 variable ADDR_BIT stops the compiler reporting a shift overflow
2753 when it won't occur. */
2754 /* NOTE: This assumes that the significant address information is
2755 kept in the least significant bits of ADDR - the upper bits were
2756 either zero or sign extended. Should gdbarch_address_to_pointer or
2757 some ADDRESS_TO_PRINTABLE() be used to do the conversion? */
2759 int addr_bit
= gdbarch_addr_bit (gdbarch
);
2761 if (addr_bit
< (sizeof (CORE_ADDR
) * HOST_CHAR_BIT
))
2762 addr
&= ((CORE_ADDR
) 1 << addr_bit
) - 1;
2763 return hex_string (addr
);
2766 /* This function is described in "defs.h". */
2769 print_core_address (struct gdbarch
*gdbarch
, CORE_ADDR address
)
2771 int addr_bit
= gdbarch_addr_bit (gdbarch
);
2773 if (addr_bit
< (sizeof (CORE_ADDR
) * HOST_CHAR_BIT
))
2774 address
&= ((CORE_ADDR
) 1 << addr_bit
) - 1;
2776 /* FIXME: cagney/2002-05-03: Need local_address_string() function
2777 that returns the language localized string formatted to a width
2778 based on gdbarch_addr_bit. */
2780 return hex_string_custom (address
, 8);
2782 return hex_string_custom (address
, 16);
2785 /* Callback hash_f for htab_create_alloc or htab_create_alloc_ex. */
2788 core_addr_hash (const void *ap
)
2790 const CORE_ADDR
*addrp
= ap
;
2795 /* Callback eq_f for htab_create_alloc or htab_create_alloc_ex. */
2798 core_addr_eq (const void *ap
, const void *bp
)
2800 const CORE_ADDR
*addr_ap
= ap
;
2801 const CORE_ADDR
*addr_bp
= bp
;
2803 return *addr_ap
== *addr_bp
;
2806 /* Convert a string back into a CORE_ADDR. */
2808 string_to_core_addr (const char *my_string
)
2812 if (my_string
[0] == '0' && tolower (my_string
[1]) == 'x')
2814 /* Assume that it is in hex. */
2817 for (i
= 2; my_string
[i
] != '\0'; i
++)
2819 if (isdigit (my_string
[i
]))
2820 addr
= (my_string
[i
] - '0') + (addr
* 16);
2821 else if (isxdigit (my_string
[i
]))
2822 addr
= (tolower (my_string
[i
]) - 'a' + 0xa) + (addr
* 16);
2824 error (_("invalid hex \"%s\""), my_string
);
2829 /* Assume that it is in decimal. */
2832 for (i
= 0; my_string
[i
] != '\0'; i
++)
2834 if (isdigit (my_string
[i
]))
2835 addr
= (my_string
[i
] - '0') + (addr
* 10);
2837 error (_("invalid decimal \"%s\""), my_string
);
2845 gdb_realpath (const char *filename
)
2847 /* On most hosts, we rely on canonicalize_file_name to compute
2848 the FILENAME's realpath.
2850 But the situation is slightly more complex on Windows, due to some
2851 versions of GCC which were reported to generate paths where
2852 backlashes (the directory separator) were doubled. For instance:
2853 c:\\some\\double\\slashes\\dir
2855 c:\some\double\slashes\dir
2856 Those double-slashes were getting in the way when comparing paths,
2857 for instance when trying to insert a breakpoint as follow:
2858 (gdb) b c:/some/double/slashes/dir/foo.c:4
2859 No source file named c:/some/double/slashes/dir/foo.c:4.
2860 (gdb) b c:\some\double\slashes\dir\foo.c:4
2861 No source file named c:\some\double\slashes\dir\foo.c:4.
2862 To prevent this from happening, we need this function to always
2863 strip those extra backslashes. While canonicalize_file_name does
2864 perform this simplification, it only works when the path is valid.
2865 Since the simplification would be useful even if the path is not
2866 valid (one can always set a breakpoint on a file, even if the file
2867 does not exist locally), we rely instead on GetFullPathName to
2868 perform the canonicalization. */
2870 #if defined (_WIN32)
2873 DWORD len
= GetFullPathName (filename
, MAX_PATH
, buf
, NULL
);
2875 /* The file system is case-insensitive but case-preserving.
2876 So it is important we do not lowercase the path. Otherwise,
2877 we might not be able to display the original casing in a given
2879 if (len
> 0 && len
< MAX_PATH
)
2880 return xstrdup (buf
);
2884 char *rp
= canonicalize_file_name (filename
);
2891 /* This system is a lost cause, just dup the buffer. */
2892 return xstrdup (filename
);
2895 /* Return a copy of FILENAME, with its directory prefix canonicalized
2899 gdb_realpath_keepfile (const char *filename
)
2901 const char *base_name
= lbasename (filename
);
2906 /* Extract the basename of filename, and return immediately
2907 a copy of filename if it does not contain any directory prefix. */
2908 if (base_name
== filename
)
2909 return xstrdup (filename
);
2911 dir_name
= alloca ((size_t) (base_name
- filename
+ 2));
2912 /* Allocate enough space to store the dir_name + plus one extra
2913 character sometimes needed under Windows (see below), and
2914 then the closing \000 character. */
2915 strncpy (dir_name
, filename
, base_name
- filename
);
2916 dir_name
[base_name
- filename
] = '\000';
2918 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
2919 /* We need to be careful when filename is of the form 'd:foo', which
2920 is equivalent of d:./foo, which is totally different from d:/foo. */
2921 if (strlen (dir_name
) == 2 && isalpha (dir_name
[0]) && dir_name
[1] == ':')
2924 dir_name
[3] = '\000';
2928 /* Canonicalize the directory prefix, and build the resulting
2929 filename. If the dirname realpath already contains an ending
2930 directory separator, avoid doubling it. */
2931 real_path
= gdb_realpath (dir_name
);
2932 if (IS_DIR_SEPARATOR (real_path
[strlen (real_path
) - 1]))
2933 result
= concat (real_path
, base_name
, (char *) NULL
);
2935 result
= concat (real_path
, SLASH_STRING
, base_name
, (char *) NULL
);
2941 /* Return PATH in absolute form, performing tilde-expansion if necessary.
2942 PATH cannot be NULL or the empty string.
2943 This does not resolve symlinks however, use gdb_realpath for that.
2944 Space for the result is allocated with malloc.
2945 If the path is already absolute, it is strdup'd.
2946 If there is a problem computing the absolute path, the path is returned
2947 unchanged (still strdup'd). */
2950 gdb_abspath (const char *path
)
2952 gdb_assert (path
!= NULL
&& path
[0] != '\0');
2955 return tilde_expand (path
);
2957 if (IS_ABSOLUTE_PATH (path
))
2958 return xstrdup (path
);
2960 /* Beware the // my son, the Emacs barfs, the botch that catch... */
2961 return concat (current_directory
,
2962 IS_DIR_SEPARATOR (current_directory
[strlen (current_directory
) - 1])
2963 ? "" : SLASH_STRING
,
2964 path
, (char *) NULL
);
2968 align_up (ULONGEST v
, int n
)
2970 /* Check that N is really a power of two. */
2971 gdb_assert (n
&& (n
& (n
-1)) == 0);
2972 return (v
+ n
- 1) & -n
;
2976 align_down (ULONGEST v
, int n
)
2978 /* Check that N is really a power of two. */
2979 gdb_assert (n
&& (n
& (n
-1)) == 0);
2983 /* Allocation function for the libiberty hash table which uses an
2984 obstack. The obstack is passed as DATA. */
2987 hashtab_obstack_allocate (void *data
, size_t size
, size_t count
)
2989 size_t total
= size
* count
;
2990 void *ptr
= obstack_alloc ((struct obstack
*) data
, total
);
2992 memset (ptr
, 0, total
);
2996 /* Trivial deallocation function for the libiberty splay tree and hash
2997 table - don't deallocate anything. Rely on later deletion of the
2998 obstack. DATA will be the obstack, although it is not needed
3002 dummy_obstack_deallocate (void *object
, void *data
)
3007 /* The bit offset of the highest byte in a ULONGEST, for overflow
3010 #define HIGH_BYTE_POSN ((sizeof (ULONGEST) - 1) * HOST_CHAR_BIT)
3012 /* True (non-zero) iff DIGIT is a valid digit in radix BASE,
3013 where 2 <= BASE <= 36. */
3016 is_digit_in_base (unsigned char digit
, int base
)
3018 if (!isalnum (digit
))
3021 return (isdigit (digit
) && digit
< base
+ '0');
3023 return (isdigit (digit
) || tolower (digit
) < base
- 10 + 'a');
3027 digit_to_int (unsigned char c
)
3032 return tolower (c
) - 'a' + 10;
3035 /* As for strtoul, but for ULONGEST results. */
3038 strtoulst (const char *num
, const char **trailer
, int base
)
3040 unsigned int high_part
;
3045 /* Skip leading whitespace. */
3046 while (isspace (num
[i
]))
3049 /* Handle prefixes. */
3052 else if (num
[i
] == '-')
3058 if (base
== 0 || base
== 16)
3060 if (num
[i
] == '0' && (num
[i
+ 1] == 'x' || num
[i
+ 1] == 'X'))
3068 if (base
== 0 && num
[i
] == '0')
3074 if (base
< 2 || base
> 36)
3080 result
= high_part
= 0;
3081 for (; is_digit_in_base (num
[i
], base
); i
+= 1)
3083 result
= result
* base
+ digit_to_int (num
[i
]);
3084 high_part
= high_part
* base
+ (unsigned int) (result
>> HIGH_BYTE_POSN
);
3085 result
&= ((ULONGEST
) 1 << HIGH_BYTE_POSN
) - 1;
3086 if (high_part
> 0xff)
3089 result
= ~ (ULONGEST
) 0;
3096 if (trailer
!= NULL
)
3099 result
= result
+ ((ULONGEST
) high_part
<< HIGH_BYTE_POSN
);
3106 /* Simple, portable version of dirname that does not modify its
3110 ldirname (const char *filename
)
3112 const char *base
= lbasename (filename
);
3115 while (base
> filename
&& IS_DIR_SEPARATOR (base
[-1]))
3118 if (base
== filename
)
3121 dirname
= xmalloc (base
- filename
+ 2);
3122 memcpy (dirname
, filename
, base
- filename
);
3124 /* On DOS based file systems, convert "d:foo" to "d:.", so that we
3125 create "d:./bar" later instead of the (different) "d:/bar". */
3126 if (base
- filename
== 2 && IS_ABSOLUTE_PATH (base
)
3127 && !IS_DIR_SEPARATOR (filename
[0]))
3128 dirname
[base
++ - filename
] = '.';
3130 dirname
[base
- filename
] = '\0';
3134 /* Call libiberty's buildargv, and return the result.
3135 If buildargv fails due to out-of-memory, call nomem.
3136 Therefore, the returned value is guaranteed to be non-NULL,
3137 unless the parameter itself is NULL. */
3140 gdb_buildargv (const char *s
)
3142 char **argv
= buildargv (s
);
3144 if (s
!= NULL
&& argv
== NULL
)
3150 compare_positive_ints (const void *ap
, const void *bp
)
3152 /* Because we know we're comparing two ints which are positive,
3153 there's no danger of overflow here. */
3154 return * (int *) ap
- * (int *) bp
;
3157 /* String compare function for qsort. */
3160 compare_strings (const void *arg1
, const void *arg2
)
3162 const char **s1
= (const char **) arg1
;
3163 const char **s2
= (const char **) arg2
;
3165 return strcmp (*s1
, *s2
);
3168 #define AMBIGUOUS_MESS1 ".\nMatching formats:"
3169 #define AMBIGUOUS_MESS2 \
3170 ".\nUse \"set gnutarget format-name\" to specify the format."
3173 gdb_bfd_errmsg (bfd_error_type error_tag
, char **matching
)
3179 /* Check if errmsg just need simple return. */
3180 if (error_tag
!= bfd_error_file_ambiguously_recognized
|| matching
== NULL
)
3181 return bfd_errmsg (error_tag
);
3183 ret_len
= strlen (bfd_errmsg (error_tag
)) + strlen (AMBIGUOUS_MESS1
)
3184 + strlen (AMBIGUOUS_MESS2
);
3185 for (p
= matching
; *p
; p
++)
3186 ret_len
+= strlen (*p
) + 1;
3187 ret
= xmalloc (ret_len
+ 1);
3189 make_cleanup (xfree
, ret
);
3191 strcpy (retp
, bfd_errmsg (error_tag
));
3192 retp
+= strlen (retp
);
3194 strcpy (retp
, AMBIGUOUS_MESS1
);
3195 retp
+= strlen (retp
);
3197 for (p
= matching
; *p
; p
++)
3199 sprintf (retp
, " %s", *p
);
3200 retp
+= strlen (retp
);
3204 strcpy (retp
, AMBIGUOUS_MESS2
);
3209 /* Return ARGS parsed as a valid pid, or throw an error. */
3212 parse_pid_to_attach (const char *args
)
3218 error_no_arg (_("process-id to attach"));
3220 dummy
= (char *) args
;
3221 pid
= strtoul (args
, &dummy
, 0);
3222 /* Some targets don't set errno on errors, grrr! */
3223 if ((pid
== 0 && dummy
== args
) || dummy
!= &args
[strlen (args
)])
3224 error (_("Illegal process-id: %s."), args
);
3229 /* Helper for make_bpstat_clear_actions_cleanup. */
3232 do_bpstat_clear_actions_cleanup (void *unused
)
3234 bpstat_clear_actions ();
3237 /* Call bpstat_clear_actions for the case an exception is throw. You should
3238 discard_cleanups if no exception is caught. */
3241 make_bpstat_clear_actions_cleanup (void)
3243 return make_cleanup (do_bpstat_clear_actions_cleanup
, NULL
);
3246 /* Check for GCC >= 4.x according to the symtab->producer string. Return minor
3247 version (x) of 4.x in such case. If it is not GCC or it is GCC older than
3248 4.x return -1. If it is GCC 5.x or higher return INT_MAX. */
3251 producer_is_gcc_ge_4 (const char *producer
)
3255 if (! producer_is_gcc (producer
, &major
, &minor
))
3264 /* Returns nonzero if the given PRODUCER string is GCC and sets the MAJOR
3265 and MINOR versions when not NULL. Returns zero if the given PRODUCER
3266 is NULL or it isn't GCC. */
3269 producer_is_gcc (const char *producer
, int *major
, int *minor
)
3273 if (producer
!= NULL
&& startswith (producer
, "GNU "))
3282 /* Skip any identifier after "GNU " - such as "C11" "C++" or "Java".
3283 A full producer string might look like:
3285 "GNU Fortran 4.8.2 20140120 (Red Hat 4.8.2-16) -mtune=generic ..."
3286 "GNU C++14 5.0.0 20150123 (experimental)"
3288 cs
= &producer
[strlen ("GNU ")];
3289 while (*cs
&& !isspace (*cs
))
3291 if (*cs
&& isspace (*cs
))
3293 if (sscanf (cs
, "%d.%d", major
, minor
) == 2)
3297 /* Not recognized as GCC. */
3301 /* Helper for make_cleanup_free_char_ptr_vec. */
3304 do_free_char_ptr_vec (void *arg
)
3306 VEC (char_ptr
) *char_ptr_vec
= arg
;
3308 free_char_ptr_vec (char_ptr_vec
);
3311 /* Make cleanup handler calling xfree for each element of CHAR_PTR_VEC and
3312 final VEC_free for CHAR_PTR_VEC itself.
3314 You must not modify CHAR_PTR_VEC after this cleanup registration as the
3315 CHAR_PTR_VEC base address may change on its updates. Contrary to VEC_free
3316 this function does not (cannot) clear the pointer. */
3319 make_cleanup_free_char_ptr_vec (VEC (char_ptr
) *char_ptr_vec
)
3321 return make_cleanup (do_free_char_ptr_vec
, char_ptr_vec
);
3324 /* Substitute all occurences of string FROM by string TO in *STRINGP. *STRINGP
3325 must come from xrealloc-compatible allocator and it may be updated. FROM
3326 needs to be delimited by IS_DIR_SEPARATOR or DIRNAME_SEPARATOR (or be
3327 located at the start or end of *STRINGP. */
3330 substitute_path_component (char **stringp
, const char *from
, const char *to
)
3332 char *string
= *stringp
, *s
;
3333 const size_t from_len
= strlen (from
);
3334 const size_t to_len
= strlen (to
);
3338 s
= strstr (s
, from
);
3342 if ((s
== string
|| IS_DIR_SEPARATOR (s
[-1])
3343 || s
[-1] == DIRNAME_SEPARATOR
)
3344 && (s
[from_len
] == '\0' || IS_DIR_SEPARATOR (s
[from_len
])
3345 || s
[from_len
] == DIRNAME_SEPARATOR
))
3349 string_new
= xrealloc (string
, (strlen (string
) + to_len
+ 1));
3351 /* Relocate the current S pointer. */
3352 s
= s
- string
+ string_new
;
3353 string
= string_new
;
3355 /* Replace from by to. */
3356 memmove (&s
[to_len
], &s
[from_len
], strlen (&s
[from_len
]) + 1);
3357 memcpy (s
, to
, to_len
);
3372 /* SIGALRM handler for waitpid_with_timeout. */
3375 sigalrm_handler (int signo
)
3377 /* Nothing to do. */
3382 /* Wrapper to wait for child PID to die with TIMEOUT.
3383 TIMEOUT is the time to stop waiting in seconds.
3384 If TIMEOUT is zero, pass WNOHANG to waitpid.
3385 Returns PID if it was successfully waited for, otherwise -1.
3387 Timeouts are currently implemented with alarm and SIGALRM.
3388 If the host does not support them, this waits "forever".
3389 It would be odd though for a host to have waitpid and not SIGALRM. */
3392 wait_to_die_with_timeout (pid_t pid
, int *status
, int timeout
)
3394 pid_t waitpid_result
;
3396 gdb_assert (pid
> 0);
3397 gdb_assert (timeout
>= 0);
3402 #if defined (HAVE_SIGACTION) && defined (SA_RESTART)
3403 struct sigaction sa
, old_sa
;
3405 sa
.sa_handler
= sigalrm_handler
;
3406 sigemptyset (&sa
.sa_mask
);
3408 sigaction (SIGALRM
, &sa
, &old_sa
);
3412 ofunc
= (void (*)()) signal (SIGALRM
, sigalrm_handler
);
3418 waitpid_result
= waitpid (pid
, status
, 0);
3422 #if defined (HAVE_SIGACTION) && defined (SA_RESTART)
3423 sigaction (SIGALRM
, &old_sa
, NULL
);
3425 signal (SIGALRM
, ofunc
);
3430 waitpid_result
= waitpid (pid
, status
, WNOHANG
);
3432 if (waitpid_result
== pid
)
3438 #endif /* HAVE_WAITPID */
3440 /* Provide fnmatch compatible function for FNM_FILE_NAME matching of host files.
3441 Both FNM_FILE_NAME and FNM_NOESCAPE must be set in FLAGS.
3443 It handles correctly HAVE_DOS_BASED_FILE_SYSTEM and
3444 HAVE_CASE_INSENSITIVE_FILE_SYSTEM. */
3447 gdb_filename_fnmatch (const char *pattern
, const char *string
, int flags
)
3449 gdb_assert ((flags
& FNM_FILE_NAME
) != 0);
3451 /* It is unclear how '\' escaping vs. directory separator should coexist. */
3452 gdb_assert ((flags
& FNM_NOESCAPE
) != 0);
3454 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
3456 char *pattern_slash
, *string_slash
;
3458 /* Replace '\' by '/' in both strings. */
3460 pattern_slash
= alloca (strlen (pattern
) + 1);
3461 strcpy (pattern_slash
, pattern
);
3462 pattern
= pattern_slash
;
3463 for (; *pattern_slash
!= 0; pattern_slash
++)
3464 if (IS_DIR_SEPARATOR (*pattern_slash
))
3465 *pattern_slash
= '/';
3467 string_slash
= alloca (strlen (string
) + 1);
3468 strcpy (string_slash
, string
);
3469 string
= string_slash
;
3470 for (; *string_slash
!= 0; string_slash
++)
3471 if (IS_DIR_SEPARATOR (*string_slash
))
3472 *string_slash
= '/';
3474 #endif /* HAVE_DOS_BASED_FILE_SYSTEM */
3476 #ifdef HAVE_CASE_INSENSITIVE_FILE_SYSTEM
3477 flags
|= FNM_CASEFOLD
;
3478 #endif /* HAVE_CASE_INSENSITIVE_FILE_SYSTEM */
3480 return fnmatch (pattern
, string
, flags
);
3483 /* Provide a prototype to silence -Wmissing-prototypes. */
3484 extern initialize_file_ftype _initialize_utils
;
3487 _initialize_utils (void)
3489 add_internal_problem_command (&internal_error_problem
);
3490 add_internal_problem_command (&internal_warning_problem
);
3491 add_internal_problem_command (&demangler_warning_problem
);