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
= XNEW (struct restore_integer_closure
);
296 c
->variable
= variable
;
297 c
->value
= *variable
;
299 return make_cleanup_dtor (restore_integer
, (void *) c
, xfree
);
302 /* Remember the current value of *VARIABLE and make it restored when
303 the cleanup is run. */
306 make_cleanup_restore_uinteger (unsigned int *variable
)
308 return make_cleanup_restore_integer ((int *) variable
);
311 /* Helper for make_cleanup_unpush_target. */
314 do_unpush_target (void *arg
)
316 struct target_ops
*ops
= arg
;
321 /* Return a new cleanup that unpushes OPS. */
324 make_cleanup_unpush_target (struct target_ops
*ops
)
326 return make_cleanup (do_unpush_target
, ops
);
329 /* Helper for make_cleanup_htab_delete compile time checking the types. */
332 do_htab_delete_cleanup (void *htab_voidp
)
334 htab_t htab
= htab_voidp
;
339 /* Return a new cleanup that deletes HTAB. */
342 make_cleanup_htab_delete (htab_t htab
)
344 return make_cleanup (do_htab_delete_cleanup
, htab
);
347 struct restore_ui_file_closure
349 struct ui_file
**variable
;
350 struct ui_file
*value
;
354 do_restore_ui_file (void *p
)
356 struct restore_ui_file_closure
*closure
= p
;
358 *(closure
->variable
) = closure
->value
;
361 /* Remember the current value of *VARIABLE and make it restored when
362 the cleanup is run. */
365 make_cleanup_restore_ui_file (struct ui_file
**variable
)
367 struct restore_ui_file_closure
*c
= XNEW (struct restore_ui_file_closure
);
369 c
->variable
= variable
;
370 c
->value
= *variable
;
372 return make_cleanup_dtor (do_restore_ui_file
, (void *) c
, xfree
);
375 /* Helper for make_cleanup_value_free_to_mark. */
378 do_value_free_to_mark (void *value
)
380 value_free_to_mark ((struct value
*) value
);
383 /* Free all values allocated since MARK was obtained by value_mark
384 (except for those released) when the cleanup is run. */
387 make_cleanup_value_free_to_mark (struct value
*mark
)
389 return make_cleanup (do_value_free_to_mark
, mark
);
392 /* Helper for make_cleanup_value_free. */
395 do_value_free (void *value
)
403 make_cleanup_value_free (struct value
*value
)
405 return make_cleanup (do_value_free
, value
);
408 /* Helper for make_cleanup_free_so. */
411 do_free_so (void *arg
)
413 struct so_list
*so
= arg
;
418 /* Make cleanup handler calling free_so for SO. */
421 make_cleanup_free_so (struct so_list
*so
)
423 return make_cleanup (do_free_so
, so
);
426 /* Helper for make_cleanup_restore_current_language. */
429 do_restore_current_language (void *p
)
431 enum language saved_lang
= (enum language
) (uintptr_t) p
;
433 set_language (saved_lang
);
436 /* Remember the current value of CURRENT_LANGUAGE and make it restored when
437 the cleanup is run. */
440 make_cleanup_restore_current_language (void)
442 enum language saved_lang
= current_language
->la_language
;
444 return make_cleanup (do_restore_current_language
,
445 (void *) (uintptr_t) saved_lang
);
448 /* Helper function for make_cleanup_clear_parser_state. */
451 do_clear_parser_state (void *ptr
)
453 struct parser_state
**p
= (struct parser_state
**) ptr
;
458 /* Clean (i.e., set to NULL) the parser state variable P. */
461 make_cleanup_clear_parser_state (struct parser_state
**p
)
463 return make_cleanup (do_clear_parser_state
, (void *) p
);
466 /* This function is useful for cleanups.
470 old_chain = make_cleanup (free_current_contents, &foo);
472 to arrange to free the object thus allocated. */
475 free_current_contents (void *ptr
)
477 void **location
= ptr
;
479 if (location
== NULL
)
480 internal_error (__FILE__
, __LINE__
,
481 _("free_current_contents: NULL pointer"));
482 if (*location
!= NULL
)
491 /* Print a warning message. The first argument STRING is the warning
492 message, used as an fprintf format string, the second is the
493 va_list of arguments for that string. A warning is unfiltered (not
494 paginated) so that the user does not need to page through each
495 screen full of warnings when there are lots of them. */
498 vwarning (const char *string
, va_list args
)
500 if (deprecated_warning_hook
)
501 (*deprecated_warning_hook
) (string
, args
);
504 if (target_supports_terminal_ours ())
505 target_terminal_ours ();
506 if (filtered_printing_initialized ())
507 wrap_here (""); /* Force out any buffered output. */
508 gdb_flush (gdb_stdout
);
509 if (warning_pre_print
)
510 fputs_unfiltered (warning_pre_print
, gdb_stderr
);
511 vfprintf_unfiltered (gdb_stderr
, string
, args
);
512 fprintf_unfiltered (gdb_stderr
, "\n");
516 /* Print an error message and return to command level.
517 The first argument STRING is the error message, used as a fprintf string,
518 and the remaining args are passed as arguments to it. */
521 verror (const char *string
, va_list args
)
523 throw_verror (GENERIC_ERROR
, string
, args
);
527 error_stream (struct ui_file
*stream
)
529 char *message
= ui_file_xstrdup (stream
, NULL
);
531 make_cleanup (xfree
, message
);
532 error (("%s"), message
);
535 /* Emit a message and abort. */
537 static void ATTRIBUTE_NORETURN
538 abort_with_message (const char *msg
)
540 if (gdb_stderr
== NULL
)
543 fputs_unfiltered (msg
, gdb_stderr
);
545 abort (); /* NOTE: GDB has only three calls to abort(). */
548 /* Dump core trying to increase the core soft limit to hard limit first. */
553 #ifdef HAVE_SETRLIMIT
554 struct rlimit rlim
= { RLIM_INFINITY
, RLIM_INFINITY
};
556 setrlimit (RLIMIT_CORE
, &rlim
);
557 #endif /* HAVE_SETRLIMIT */
559 abort (); /* NOTE: GDB has only three calls to abort(). */
562 /* Check whether GDB will be able to dump core using the dump_core
563 function. Returns zero if GDB cannot or should not dump core.
564 If LIMIT_KIND is LIMIT_CUR the user's soft limit will be respected.
565 If LIMIT_KIND is LIMIT_MAX only the hard limit will be respected. */
568 can_dump_core (enum resource_limit_kind limit_kind
)
570 #ifdef HAVE_GETRLIMIT
573 /* Be quiet and assume we can dump if an error is returned. */
574 if (getrlimit (RLIMIT_CORE
, &rlim
) != 0)
580 if (rlim
.rlim_cur
== 0)
584 if (rlim
.rlim_max
== 0)
587 #endif /* HAVE_GETRLIMIT */
592 /* Print a warning that we cannot dump core. */
595 warn_cant_dump_core (const char *reason
)
597 fprintf_unfiltered (gdb_stderr
,
598 _("%s\nUnable to dump core, use `ulimit -c"
599 " unlimited' before executing GDB next time.\n"),
603 /* Check whether GDB will be able to dump core using the dump_core
604 function, and print a warning if we cannot. */
607 can_dump_core_warn (enum resource_limit_kind limit_kind
,
610 int core_dump_allowed
= can_dump_core (limit_kind
);
612 if (!core_dump_allowed
)
613 warn_cant_dump_core (reason
);
615 return core_dump_allowed
;
618 /* Allow the user to configure the debugger behavior with respect to
619 what to do when an internal problem is detected. */
621 const char internal_problem_ask
[] = "ask";
622 const char internal_problem_yes
[] = "yes";
623 const char internal_problem_no
[] = "no";
624 static const char *const internal_problem_modes
[] =
626 internal_problem_ask
,
627 internal_problem_yes
,
632 /* Print a message reporting an internal error/warning. Ask the user
633 if they want to continue, dump core, or just exit. Return
634 something to indicate a quit. */
636 struct internal_problem
639 int user_settable_should_quit
;
640 const char *should_quit
;
641 int user_settable_should_dump_core
;
642 const char *should_dump_core
;
645 /* Report a problem, internal to GDB, to the user. Once the problem
646 has been reported, and assuming GDB didn't quit, the caller can
647 either allow execution to resume or throw an error. */
649 static void ATTRIBUTE_PRINTF (4, 0)
650 internal_vproblem (struct internal_problem
*problem
,
651 const char *file
, int line
, const char *fmt
, va_list ap
)
657 struct cleanup
*cleanup
= make_cleanup (null_cleanup
, NULL
);
659 /* Don't allow infinite error/warning recursion. */
661 static char msg
[] = "Recursive internal problem.\n";
670 abort_with_message (msg
);
673 /* Newer GLIBC versions put the warn_unused_result attribute
674 on write, but this is one of those rare cases where
675 ignoring the return value is correct. Casting to (void)
676 does not fix this problem. This is the solution suggested
677 at http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25509. */
678 if (write (STDERR_FILENO
, msg
, sizeof (msg
)) != sizeof (msg
))
679 abort (); /* NOTE: GDB has only three calls to abort(). */
684 /* Create a string containing the full error/warning message. Need
685 to call query with this full string, as otherwize the reason
686 (error/warning) and question become separated. Format using a
687 style similar to a compiler error message. Include extra detail
688 so that the user knows that they are living on the edge. */
692 msg
= xstrvprintf (fmt
, ap
);
693 reason
= xstrprintf ("%s:%d: %s: %s\n"
694 "A problem internal to GDB has been detected,\n"
695 "further debugging may prove unreliable.",
696 file
, line
, problem
->name
, msg
);
698 make_cleanup (xfree
, reason
);
701 /* Fall back to abort_with_message if gdb_stderr is not set up. */
702 if (gdb_stderr
== NULL
)
704 fputs (reason
, stderr
);
705 abort_with_message ("\n");
708 /* Try to get the message out and at the start of a new line. */
709 if (target_supports_terminal_ours ())
710 target_terminal_ours ();
711 if (filtered_printing_initialized ())
714 /* Emit the message unless query will emit it below. */
715 if (problem
->should_quit
!= internal_problem_ask
717 || !filtered_printing_initialized ())
718 fprintf_unfiltered (gdb_stderr
, "%s\n", reason
);
720 if (problem
->should_quit
== internal_problem_ask
)
722 /* Default (yes/batch case) is to quit GDB. When in batch mode
723 this lessens the likelihood of GDB going into an infinite
725 if (!confirm
|| !filtered_printing_initialized ())
728 quit_p
= query (_("%s\nQuit this debugging session? "), reason
);
730 else if (problem
->should_quit
== internal_problem_yes
)
732 else if (problem
->should_quit
== internal_problem_no
)
735 internal_error (__FILE__
, __LINE__
, _("bad switch"));
737 fputs_unfiltered (_("\nThis is a bug, please report it."), gdb_stderr
);
738 if (REPORT_BUGS_TO
[0])
739 fprintf_unfiltered (gdb_stderr
, _(" For instructions, see:\n%s."),
741 fputs_unfiltered ("\n\n", gdb_stderr
);
743 if (problem
->should_dump_core
== internal_problem_ask
)
745 if (!can_dump_core_warn (LIMIT_MAX
, reason
))
747 else if (!filtered_printing_initialized ())
751 /* Default (yes/batch case) is to dump core. This leaves a GDB
752 `dropping' so that it is easier to see that something went
754 dump_core_p
= query (_("%s\nCreate a core file of GDB? "), reason
);
757 else if (problem
->should_dump_core
== internal_problem_yes
)
758 dump_core_p
= can_dump_core_warn (LIMIT_MAX
, reason
);
759 else if (problem
->should_dump_core
== internal_problem_no
)
762 internal_error (__FILE__
, __LINE__
, _("bad switch"));
775 #ifdef HAVE_WORKING_FORK
783 do_cleanups (cleanup
);
786 static struct internal_problem internal_error_problem
= {
787 "internal-error", 1, internal_problem_ask
, 1, internal_problem_ask
791 internal_verror (const char *file
, int line
, const char *fmt
, va_list ap
)
793 internal_vproblem (&internal_error_problem
, file
, line
, fmt
, ap
);
794 throw_quit (_("Command aborted."));
797 static struct internal_problem internal_warning_problem
= {
798 "internal-warning", 1, internal_problem_ask
, 1, internal_problem_ask
802 internal_vwarning (const char *file
, int line
, const char *fmt
, va_list ap
)
804 internal_vproblem (&internal_warning_problem
, file
, line
, fmt
, ap
);
807 static struct internal_problem demangler_warning_problem
= {
808 "demangler-warning", 1, internal_problem_ask
, 0, internal_problem_no
812 demangler_vwarning (const char *file
, int line
, const char *fmt
, va_list ap
)
814 internal_vproblem (&demangler_warning_problem
, file
, line
, fmt
, ap
);
818 demangler_warning (const char *file
, int line
, const char *string
, ...)
822 va_start (ap
, string
);
823 demangler_vwarning (file
, line
, string
, ap
);
827 /* Dummy functions to keep add_prefix_cmd happy. */
830 set_internal_problem_cmd (char *args
, int from_tty
)
835 show_internal_problem_cmd (char *args
, int from_tty
)
839 /* When GDB reports an internal problem (error or warning) it gives
840 the user the opportunity to quit GDB and/or create a core file of
841 the current debug session. This function registers a few commands
842 that make it possible to specify that GDB should always or never
843 quit or create a core file, without asking. The commands look
846 maint set PROBLEM-NAME quit ask|yes|no
847 maint show PROBLEM-NAME quit
848 maint set PROBLEM-NAME corefile ask|yes|no
849 maint show PROBLEM-NAME corefile
851 Where PROBLEM-NAME is currently "internal-error" or
852 "internal-warning". */
855 add_internal_problem_command (struct internal_problem
*problem
)
857 struct cmd_list_element
**set_cmd_list
;
858 struct cmd_list_element
**show_cmd_list
;
862 set_cmd_list
= XNEW (struct cmd_list_element
*);
863 show_cmd_list
= XNEW (struct cmd_list_element
*);
864 *set_cmd_list
= NULL
;
865 *show_cmd_list
= NULL
;
867 set_doc
= xstrprintf (_("Configure what GDB does when %s is detected."),
870 show_doc
= xstrprintf (_("Show what GDB does when %s is detected."),
873 add_prefix_cmd ((char*) problem
->name
,
874 class_maintenance
, set_internal_problem_cmd
, set_doc
,
876 concat ("maintenance set ", problem
->name
, " ",
878 0/*allow-unknown*/, &maintenance_set_cmdlist
);
880 add_prefix_cmd ((char*) problem
->name
,
881 class_maintenance
, show_internal_problem_cmd
, show_doc
,
883 concat ("maintenance show ", problem
->name
, " ",
885 0/*allow-unknown*/, &maintenance_show_cmdlist
);
887 if (problem
->user_settable_should_quit
)
889 set_doc
= xstrprintf (_("Set whether GDB should quit "
890 "when an %s is detected"),
892 show_doc
= xstrprintf (_("Show whether GDB will quit "
893 "when an %s is detected"),
895 add_setshow_enum_cmd ("quit", class_maintenance
,
896 internal_problem_modes
,
897 &problem
->should_quit
,
910 if (problem
->user_settable_should_dump_core
)
912 set_doc
= xstrprintf (_("Set whether GDB should create a core "
913 "file of GDB when %s is detected"),
915 show_doc
= xstrprintf (_("Show whether GDB will create a core "
916 "file of GDB when %s is detected"),
918 add_setshow_enum_cmd ("corefile", class_maintenance
,
919 internal_problem_modes
,
920 &problem
->should_dump_core
,
934 /* Return a newly allocated string, containing the PREFIX followed
935 by the system error message for errno (separated by a colon).
937 The result must be deallocated after use. */
940 perror_string (const char *prefix
)
945 err
= safe_strerror (errno
);
946 combined
= (char *) xmalloc (strlen (err
) + strlen (prefix
) + 3);
947 strcpy (combined
, prefix
);
948 strcat (combined
, ": ");
949 strcat (combined
, err
);
954 /* Print the system error message for errno, and also mention STRING
955 as the file name for which the error was encountered. Use ERRCODE
956 for the thrown exception. Then return to command level. */
959 throw_perror_with_name (enum errors errcode
, const char *string
)
963 combined
= perror_string (string
);
964 make_cleanup (xfree
, combined
);
966 /* I understand setting these is a matter of taste. Still, some people
967 may clear errno but not know about bfd_error. Doing this here is not
969 bfd_set_error (bfd_error_no_error
);
972 throw_error (errcode
, _("%s."), combined
);
975 /* See throw_perror_with_name, ERRCODE defaults here to GENERIC_ERROR. */
978 perror_with_name (const char *string
)
980 throw_perror_with_name (GENERIC_ERROR
, string
);
983 /* Same as perror_with_name except that it prints a warning instead
984 of throwing an error. */
987 perror_warning_with_name (const char *string
)
991 combined
= perror_string (string
);
992 warning (_("%s"), combined
);
996 /* Print the system error message for ERRCODE, and also mention STRING
997 as the file name for which the error was encountered. */
1000 print_sys_errmsg (const char *string
, int errcode
)
1005 err
= safe_strerror (errcode
);
1006 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
1007 strcpy (combined
, string
);
1008 strcat (combined
, ": ");
1009 strcat (combined
, err
);
1011 /* We want anything which was printed on stdout to come out first, before
1013 gdb_flush (gdb_stdout
);
1014 fprintf_unfiltered (gdb_stderr
, "%s.\n", combined
);
1017 /* Control C eventually causes this to be called, at a convenient time. */
1022 if (sync_quit_force_run
)
1024 sync_quit_force_run
= 0;
1025 quit_force (NULL
, stdin
== instream
);
1029 /* No steenking SIGINT will ever be coming our way when the
1030 program is resumed. Don't lie. */
1031 throw_quit ("Quit");
1034 /* If there is no terminal switching for this target, then we can't
1035 possibly get screwed by the lack of job control. */
1036 || !target_supports_terminal_ours ())
1037 throw_quit ("Quit");
1039 throw_quit ("Quit (expect signal SIGINT when the program is resumed)");
1048 if (check_quit_flag () || sync_quit_force_run
)
1050 if (deprecated_interactive_hook
)
1051 deprecated_interactive_hook ();
1052 target_check_pending_interrupt ();
1056 /* Called when a memory allocation fails, with the number of bytes of
1057 memory requested in SIZE. */
1060 malloc_failure (long size
)
1064 internal_error (__FILE__
, __LINE__
,
1065 _("virtual memory exhausted: can't allocate %ld bytes."),
1070 internal_error (__FILE__
, __LINE__
, _("virtual memory exhausted."));
1074 /* My replacement for the read system call.
1075 Used like `read' but keeps going if `read' returns too soon. */
1078 myread (int desc
, char *addr
, int len
)
1085 val
= read (desc
, addr
, len
);
1089 return orglen
- len
;
1097 print_spaces (int n
, struct ui_file
*file
)
1099 fputs_unfiltered (n_spaces (n
), file
);
1102 /* Print a host address. */
1105 gdb_print_host_address (const void *addr
, struct ui_file
*stream
)
1107 fprintf_filtered (stream
, "%s", host_address_to_string (addr
));
1113 make_hex_string (const gdb_byte
*data
, size_t length
)
1115 char *result
= (char *) xmalloc (length
* 2 + 1);
1120 for (i
= 0; i
< length
; ++i
)
1121 p
+= xsnprintf (p
, 3, "%02x", data
[i
]);
1128 /* A cleanup function that calls regfree. */
1131 do_regfree_cleanup (void *r
)
1136 /* Create a new cleanup that frees the compiled regular expression R. */
1139 make_regfree_cleanup (regex_t
*r
)
1141 return make_cleanup (do_regfree_cleanup
, r
);
1144 /* Return an xmalloc'd error message resulting from a regular
1145 expression compilation failure. */
1148 get_regcomp_error (int code
, regex_t
*rx
)
1150 size_t length
= regerror (code
, rx
, NULL
, 0);
1151 char *result
= (char *) xmalloc (length
);
1153 regerror (code
, rx
, result
, length
);
1157 /* Compile a regexp and throw an exception on error. This returns a
1158 cleanup to free the resulting pattern on success. RX must not be
1162 compile_rx_or_error (regex_t
*pattern
, const char *rx
, const char *message
)
1166 gdb_assert (rx
!= NULL
);
1168 code
= regcomp (pattern
, rx
, REG_NOSUB
);
1171 char *err
= get_regcomp_error (code
, pattern
);
1173 make_cleanup (xfree
, err
);
1174 error (("%s: %s"), message
, err
);
1177 return make_regfree_cleanup (pattern
);
1182 /* This function supports the query, nquery, and yquery functions.
1183 Ask user a y-or-n question and return 0 if answer is no, 1 if
1184 answer is yes, or default the answer to the specified default
1185 (for yquery or nquery). DEFCHAR may be 'y' or 'n' to provide a
1186 default answer, or '\0' for no default.
1187 CTLSTR is the control string and should end in "? ". It should
1188 not say how to answer, because we do that.
1189 ARGS are the arguments passed along with the CTLSTR argument to
1192 static int ATTRIBUTE_PRINTF (1, 0)
1193 defaulted_query (const char *ctlstr
, const char defchar
, va_list args
)
1198 char def_answer
, not_def_answer
;
1199 char *y_string
, *n_string
, *question
, *prompt
;
1200 /* Used to add duration we waited for user to respond to
1201 prompt_for_continue_wait_time. */
1202 struct timeval prompt_started
, prompt_ended
, prompt_delta
;
1204 /* Set up according to which answer is the default. */
1205 if (defchar
== '\0')
1209 not_def_answer
= 'N';
1213 else if (defchar
== 'y')
1217 not_def_answer
= 'N';
1225 not_def_answer
= 'Y';
1230 /* Automatically answer the default value if the user did not want
1231 prompts or the command was issued with the server prefix. */
1232 if (!confirm
|| server_command
)
1235 /* If input isn't coming from the user directly, just say what
1236 question we're asking, and then answer the default automatically. This
1237 way, important error messages don't get lost when talking to GDB
1239 if (! input_from_terminal_p ())
1242 vfprintf_filtered (gdb_stdout
, ctlstr
, args
);
1244 printf_filtered (_("(%s or %s) [answered %c; "
1245 "input not from terminal]\n"),
1246 y_string
, n_string
, def_answer
);
1247 gdb_flush (gdb_stdout
);
1252 if (deprecated_query_hook
)
1254 return deprecated_query_hook (ctlstr
, args
);
1257 /* Format the question outside of the loop, to avoid reusing args. */
1258 question
= xstrvprintf (ctlstr
, args
);
1259 prompt
= xstrprintf (_("%s%s(%s or %s) %s"),
1260 annotation_level
> 1 ? "\n\032\032pre-query\n" : "",
1261 question
, y_string
, n_string
,
1262 annotation_level
> 1 ? "\n\032\032query\n" : "");
1265 /* Used for calculating time spend waiting for user. */
1266 gettimeofday (&prompt_started
, NULL
);
1270 char *response
, answer
;
1272 gdb_flush (gdb_stdout
);
1273 response
= gdb_readline_wrapper (prompt
);
1275 if (response
== NULL
) /* C-d */
1277 printf_filtered ("EOF [assumed %c]\n", def_answer
);
1282 answer
= response
[0];
1287 /* Check answer. For the non-default, the user must specify
1288 the non-default explicitly. */
1289 if (answer
== not_def_answer
)
1291 retval
= !def_value
;
1294 /* Otherwise, if a default was specified, the user may either
1295 specify the required input or have it default by entering
1297 if (answer
== def_answer
1298 || (defchar
!= '\0' && answer
== '\0'))
1303 /* Invalid entries are not defaulted and require another selection. */
1304 printf_filtered (_("Please answer %s or %s.\n"),
1305 y_string
, n_string
);
1308 /* Add time spend in this routine to prompt_for_continue_wait_time. */
1309 gettimeofday (&prompt_ended
, NULL
);
1310 timeval_sub (&prompt_delta
, &prompt_ended
, &prompt_started
);
1311 timeval_add (&prompt_for_continue_wait_time
,
1312 &prompt_for_continue_wait_time
, &prompt_delta
);
1315 if (annotation_level
> 1)
1316 printf_filtered (("\n\032\032post-query\n"));
1321 /* Ask user a y-or-n question and return 0 if answer is no, 1 if
1322 answer is yes, or 0 if answer is defaulted.
1323 Takes three args which are given to printf to print the question.
1324 The first, a control string, should end in "? ".
1325 It should not say how to answer, because we do that. */
1328 nquery (const char *ctlstr
, ...)
1333 va_start (args
, ctlstr
);
1334 ret
= defaulted_query (ctlstr
, 'n', args
);
1339 /* Ask user a y-or-n question and return 0 if answer is no, 1 if
1340 answer is yes, or 1 if answer is defaulted.
1341 Takes three args which are given to printf to print the question.
1342 The first, a control string, should end in "? ".
1343 It should not say how to answer, because we do that. */
1346 yquery (const char *ctlstr
, ...)
1351 va_start (args
, ctlstr
);
1352 ret
= defaulted_query (ctlstr
, 'y', args
);
1357 /* Ask user a y-or-n question and return 1 iff answer is yes.
1358 Takes three args which are given to printf to print the question.
1359 The first, a control string, should end in "? ".
1360 It should not say how to answer, because we do that. */
1363 query (const char *ctlstr
, ...)
1368 va_start (args
, ctlstr
);
1369 ret
= defaulted_query (ctlstr
, '\0', args
);
1374 /* A helper for parse_escape that converts a host character to a
1375 target character. C is the host character. If conversion is
1376 possible, then the target character is stored in *TARGET_C and the
1377 function returns 1. Otherwise, the function returns 0. */
1380 host_char_to_target (struct gdbarch
*gdbarch
, int c
, int *target_c
)
1382 struct obstack host_data
;
1384 struct cleanup
*cleanups
;
1387 obstack_init (&host_data
);
1388 cleanups
= make_cleanup_obstack_free (&host_data
);
1390 convert_between_encodings (target_charset (gdbarch
), host_charset (),
1391 (gdb_byte
*) &the_char
, 1, 1,
1392 &host_data
, translit_none
);
1394 if (obstack_object_size (&host_data
) == 1)
1397 *target_c
= *(char *) obstack_base (&host_data
);
1400 do_cleanups (cleanups
);
1404 /* Parse a C escape sequence. STRING_PTR points to a variable
1405 containing a pointer to the string to parse. That pointer
1406 should point to the character after the \. That pointer
1407 is updated past the characters we use. The value of the
1408 escape sequence is returned.
1410 A negative value means the sequence \ newline was seen,
1411 which is supposed to be equivalent to nothing at all.
1413 If \ is followed by a null character, we return a negative
1414 value and leave the string pointer pointing at the null character.
1416 If \ is followed by 000, we return 0 and leave the string pointer
1417 after the zeros. A value of 0 does not mean end of string. */
1420 parse_escape (struct gdbarch
*gdbarch
, const char **string_ptr
)
1422 int target_char
= -2; /* Initialize to avoid GCC warnings. */
1423 int c
= *(*string_ptr
)++;
1442 int i
= host_hex_value (c
);
1447 if (isdigit (c
) && c
!= '8' && c
!= '9')
1451 i
+= host_hex_value (c
);
1487 if (!host_char_to_target (gdbarch
, c
, &target_char
))
1488 error (_("The escape sequence `\\%c' is equivalent to plain `%c',"
1489 " which has no equivalent\nin the `%s' character set."),
1490 c
, c
, target_charset (gdbarch
));
1494 /* Print the character C on STREAM as part of the contents of a literal
1495 string whose delimiter is QUOTER. Note that this routine should only
1496 be call for printing things which are independent of the language
1497 of the program being debugged.
1499 printchar will normally escape backslashes and instances of QUOTER. If
1500 QUOTER is 0, printchar won't escape backslashes or any quoting character.
1501 As a side effect, if you pass the backslash character as the QUOTER,
1502 printchar will escape backslashes as usual, but not any other quoting
1506 printchar (int c
, void (*do_fputs
) (const char *, struct ui_file
*),
1507 void (*do_fprintf
) (struct ui_file
*, const char *, ...)
1508 ATTRIBUTE_FPTR_PRINTF_2
, struct ui_file
*stream
, int quoter
)
1510 c
&= 0xFF; /* Avoid sign bit follies */
1512 if (c
< 0x20 || /* Low control chars */
1513 (c
>= 0x7F && c
< 0xA0) || /* DEL, High controls */
1514 (sevenbit_strings
&& c
>= 0x80))
1515 { /* high order bit set */
1519 do_fputs ("\\n", stream
);
1522 do_fputs ("\\b", stream
);
1525 do_fputs ("\\t", stream
);
1528 do_fputs ("\\f", stream
);
1531 do_fputs ("\\r", stream
);
1534 do_fputs ("\\e", stream
);
1537 do_fputs ("\\a", stream
);
1540 do_fprintf (stream
, "\\%.3o", (unsigned int) c
);
1546 if (quoter
!= 0 && (c
== '\\' || c
== quoter
))
1547 do_fputs ("\\", stream
);
1548 do_fprintf (stream
, "%c", c
);
1552 /* Print the character C on STREAM as part of the contents of a
1553 literal string whose delimiter is QUOTER. Note that these routines
1554 should only be call for printing things which are independent of
1555 the language of the program being debugged. */
1558 fputstr_filtered (const char *str
, int quoter
, struct ui_file
*stream
)
1561 printchar (*str
++, fputs_filtered
, fprintf_filtered
, stream
, quoter
);
1565 fputstr_unfiltered (const char *str
, int quoter
, struct ui_file
*stream
)
1568 printchar (*str
++, fputs_unfiltered
, fprintf_unfiltered
, stream
, quoter
);
1572 fputstrn_filtered (const char *str
, int n
, int quoter
,
1573 struct ui_file
*stream
)
1577 for (i
= 0; i
< n
; i
++)
1578 printchar (str
[i
], fputs_filtered
, fprintf_filtered
, stream
, quoter
);
1582 fputstrn_unfiltered (const char *str
, int n
, int quoter
,
1583 struct ui_file
*stream
)
1587 for (i
= 0; i
< n
; i
++)
1588 printchar (str
[i
], fputs_unfiltered
, fprintf_unfiltered
, stream
, quoter
);
1592 /* Number of lines per page or UINT_MAX if paging is disabled. */
1593 static unsigned int lines_per_page
;
1595 show_lines_per_page (struct ui_file
*file
, int from_tty
,
1596 struct cmd_list_element
*c
, const char *value
)
1598 fprintf_filtered (file
,
1599 _("Number of lines gdb thinks are in a page is %s.\n"),
1603 /* Number of chars per line or UINT_MAX if line folding is disabled. */
1604 static unsigned int chars_per_line
;
1606 show_chars_per_line (struct ui_file
*file
, int from_tty
,
1607 struct cmd_list_element
*c
, const char *value
)
1609 fprintf_filtered (file
,
1610 _("Number of characters gdb thinks "
1611 "are in a line is %s.\n"),
1615 /* Current count of lines printed on this page, chars on this line. */
1616 static unsigned int lines_printed
, chars_printed
;
1618 /* Buffer and start column of buffered text, for doing smarter word-
1619 wrapping. When someone calls wrap_here(), we start buffering output
1620 that comes through fputs_filtered(). If we see a newline, we just
1621 spit it out and forget about the wrap_here(). If we see another
1622 wrap_here(), we spit it out and remember the newer one. If we see
1623 the end of the line, we spit out a newline, the indent, and then
1624 the buffered output. */
1626 /* Malloc'd buffer with chars_per_line+2 bytes. Contains characters which
1627 are waiting to be output (they have already been counted in chars_printed).
1628 When wrap_buffer[0] is null, the buffer is empty. */
1629 static char *wrap_buffer
;
1631 /* Pointer in wrap_buffer to the next character to fill. */
1632 static char *wrap_pointer
;
1634 /* String to indent by if the wrap occurs. Must not be NULL if wrap_column
1636 static char *wrap_indent
;
1638 /* Column number on the screen where wrap_buffer begins, or 0 if wrapping
1639 is not in effect. */
1640 static int wrap_column
;
1643 /* Inialize the number of lines per page and chars per line. */
1646 init_page_info (void)
1650 lines_per_page
= UINT_MAX
;
1651 chars_per_line
= UINT_MAX
;
1655 if (!tui_get_command_dimension (&chars_per_line
, &lines_per_page
))
1660 #if defined(__GO32__)
1661 rows
= ScreenRows ();
1662 cols
= ScreenCols ();
1663 lines_per_page
= rows
;
1664 chars_per_line
= cols
;
1666 /* Make sure Readline has initialized its terminal settings. */
1667 rl_reset_terminal (NULL
);
1669 /* Get the screen size from Readline. */
1670 rl_get_screen_size (&rows
, &cols
);
1671 lines_per_page
= rows
;
1672 chars_per_line
= cols
;
1674 /* Readline should have fetched the termcap entry for us.
1675 Only try to use tgetnum function if rl_get_screen_size
1676 did not return a useful value. */
1677 if (((rows
<= 0) && (tgetnum ("li") < 0))
1678 /* Also disable paging if inside EMACS. */
1679 || getenv ("EMACS"))
1681 /* The number of lines per page is not mentioned in the terminal
1682 description or EMACS evironment variable is set. This probably
1683 means that paging is not useful, so disable paging. */
1684 lines_per_page
= UINT_MAX
;
1687 /* If the output is not a terminal, don't paginate it. */
1688 if (!ui_file_isatty (gdb_stdout
))
1689 lines_per_page
= UINT_MAX
;
1693 /* We handle SIGWINCH ourselves. */
1694 rl_catch_sigwinch
= 0;
1700 /* Return nonzero if filtered printing is initialized. */
1702 filtered_printing_initialized (void)
1704 return wrap_buffer
!= NULL
;
1707 /* Helper for make_cleanup_restore_page_info. */
1710 do_restore_page_info_cleanup (void *arg
)
1716 /* Provide cleanup for restoring the terminal size. */
1719 make_cleanup_restore_page_info (void)
1721 struct cleanup
*back_to
;
1723 back_to
= make_cleanup (do_restore_page_info_cleanup
, NULL
);
1724 make_cleanup_restore_uinteger (&lines_per_page
);
1725 make_cleanup_restore_uinteger (&chars_per_line
);
1730 /* Temporarily set BATCH_FLAG and the associated unlimited terminal size.
1731 Provide cleanup for restoring the original state. */
1734 set_batch_flag_and_make_cleanup_restore_page_info (void)
1736 struct cleanup
*back_to
= make_cleanup_restore_page_info ();
1738 make_cleanup_restore_integer (&batch_flag
);
1745 /* Set the screen size based on LINES_PER_PAGE and CHARS_PER_LINE. */
1748 set_screen_size (void)
1750 int rows
= lines_per_page
;
1751 int cols
= chars_per_line
;
1759 /* Update Readline's idea of the terminal size. */
1760 rl_set_screen_size (rows
, cols
);
1763 /* Reinitialize WRAP_BUFFER according to the current value of
1769 if (chars_per_line
== 0)
1774 wrap_buffer
= (char *) xmalloc (chars_per_line
+ 2);
1775 wrap_buffer
[0] = '\0';
1778 wrap_buffer
= (char *) xrealloc (wrap_buffer
, chars_per_line
+ 2);
1779 wrap_pointer
= wrap_buffer
; /* Start it at the beginning. */
1783 set_width_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
1790 set_height_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
1798 set_screen_width_and_height (int width
, int height
)
1800 lines_per_page
= height
;
1801 chars_per_line
= width
;
1807 /* Wait, so the user can read what's on the screen. Prompt the user
1808 to continue by pressing RETURN. */
1811 prompt_for_continue (void)
1814 char cont_prompt
[120];
1815 /* Used to add duration we waited for user to respond to
1816 prompt_for_continue_wait_time. */
1817 struct timeval prompt_started
, prompt_ended
, prompt_delta
;
1819 gettimeofday (&prompt_started
, NULL
);
1821 if (annotation_level
> 1)
1822 printf_unfiltered (("\n\032\032pre-prompt-for-continue\n"));
1824 strcpy (cont_prompt
,
1825 "---Type <return> to continue, or q <return> to quit---");
1826 if (annotation_level
> 1)
1827 strcat (cont_prompt
, "\n\032\032prompt-for-continue\n");
1829 /* We must do this *before* we call gdb_readline, else it will eventually
1830 call us -- thinking that we're trying to print beyond the end of the
1832 reinitialize_more_filter ();
1837 /* We'll need to handle input. */
1838 target_terminal_ours ();
1840 /* On a real operating system, the user can quit with SIGINT.
1843 'q' is provided on all systems so users don't have to change habits
1844 from system to system, and because telling them what to do in
1845 the prompt is more user-friendly than expecting them to think of
1847 /* Call readline, not gdb_readline, because GO32 readline handles control-C
1848 whereas control-C to gdb_readline will cause the user to get dumped
1850 ignore
= gdb_readline_wrapper (cont_prompt
);
1852 /* Add time spend in this routine to prompt_for_continue_wait_time. */
1853 gettimeofday (&prompt_ended
, NULL
);
1854 timeval_sub (&prompt_delta
, &prompt_ended
, &prompt_started
);
1855 timeval_add (&prompt_for_continue_wait_time
,
1856 &prompt_for_continue_wait_time
, &prompt_delta
);
1858 if (annotation_level
> 1)
1859 printf_unfiltered (("\n\032\032post-prompt-for-continue\n"));
1865 while (*p
== ' ' || *p
== '\t')
1873 /* Now we have to do this again, so that GDB will know that it doesn't
1874 need to save the ---Type <return>--- line at the top of the screen. */
1875 reinitialize_more_filter ();
1877 dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */
1880 /* Initalize timer to keep track of how long we waited for the user. */
1883 reset_prompt_for_continue_wait_time (void)
1885 static const struct timeval zero_timeval
= { 0 };
1887 prompt_for_continue_wait_time
= zero_timeval
;
1890 /* Fetch the cumulative time spent in prompt_for_continue. */
1893 get_prompt_for_continue_wait_time (void)
1895 return prompt_for_continue_wait_time
;
1898 /* Reinitialize filter; ie. tell it to reset to original values. */
1901 reinitialize_more_filter (void)
1907 /* Indicate that if the next sequence of characters overflows the line,
1908 a newline should be inserted here rather than when it hits the end.
1909 If INDENT is non-null, it is a string to be printed to indent the
1910 wrapped part on the next line. INDENT must remain accessible until
1911 the next call to wrap_here() or until a newline is printed through
1914 If the line is already overfull, we immediately print a newline and
1915 the indentation, and disable further wrapping.
1917 If we don't know the width of lines, but we know the page height,
1918 we must not wrap words, but should still keep track of newlines
1919 that were explicitly printed.
1921 INDENT should not contain tabs, as that will mess up the char count
1922 on the next line. FIXME.
1924 This routine is guaranteed to force out any output which has been
1925 squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be
1926 used to force out output from the wrap_buffer. */
1929 wrap_here (char *indent
)
1931 /* This should have been allocated, but be paranoid anyway. */
1933 internal_error (__FILE__
, __LINE__
,
1934 _("failed internal consistency check"));
1938 *wrap_pointer
= '\0';
1939 fputs_unfiltered (wrap_buffer
, gdb_stdout
);
1941 wrap_pointer
= wrap_buffer
;
1942 wrap_buffer
[0] = '\0';
1943 if (chars_per_line
== UINT_MAX
) /* No line overflow checking. */
1947 else if (chars_printed
>= chars_per_line
)
1949 puts_filtered ("\n");
1951 puts_filtered (indent
);
1956 wrap_column
= chars_printed
;
1960 wrap_indent
= indent
;
1964 /* Print input string to gdb_stdout, filtered, with wrap,
1965 arranging strings in columns of n chars. String can be
1966 right or left justified in the column. Never prints
1967 trailing spaces. String should never be longer than
1968 width. FIXME: this could be useful for the EXAMINE
1969 command, which currently doesn't tabulate very well. */
1972 puts_filtered_tabular (char *string
, int width
, int right
)
1978 gdb_assert (chars_per_line
> 0);
1979 if (chars_per_line
== UINT_MAX
)
1981 fputs_filtered (string
, gdb_stdout
);
1982 fputs_filtered ("\n", gdb_stdout
);
1986 if (((chars_printed
- 1) / width
+ 2) * width
>= chars_per_line
)
1987 fputs_filtered ("\n", gdb_stdout
);
1989 if (width
>= chars_per_line
)
1990 width
= chars_per_line
- 1;
1992 stringlen
= strlen (string
);
1994 if (chars_printed
> 0)
1995 spaces
= width
- (chars_printed
- 1) % width
- 1;
1997 spaces
+= width
- stringlen
;
1999 spacebuf
= (char *) alloca (spaces
+ 1);
2000 spacebuf
[spaces
] = '\0';
2002 spacebuf
[spaces
] = ' ';
2004 fputs_filtered (spacebuf
, gdb_stdout
);
2005 fputs_filtered (string
, gdb_stdout
);
2009 /* Ensure that whatever gets printed next, using the filtered output
2010 commands, starts at the beginning of the line. I.e. if there is
2011 any pending output for the current line, flush it and start a new
2012 line. Otherwise do nothing. */
2017 if (chars_printed
> 0)
2019 puts_filtered ("\n");
2024 /* Like fputs but if FILTER is true, pause after every screenful.
2026 Regardless of FILTER can wrap at points other than the final
2027 character of a line.
2029 Unlike fputs, fputs_maybe_filtered does not return a value.
2030 It is OK for LINEBUFFER to be NULL, in which case just don't print
2033 Note that a longjmp to top level may occur in this routine (only if
2034 FILTER is true) (since prompt_for_continue may do so) so this
2035 routine should not be called when cleanups are not in place. */
2038 fputs_maybe_filtered (const char *linebuffer
, struct ui_file
*stream
,
2041 const char *lineptr
;
2043 if (linebuffer
== 0)
2046 /* Don't do any filtering if it is disabled. */
2047 if (stream
!= gdb_stdout
2048 || !pagination_enabled
2050 || (lines_per_page
== UINT_MAX
&& chars_per_line
== UINT_MAX
)
2051 || top_level_interpreter () == NULL
2052 || ui_out_is_mi_like_p (interp_ui_out (top_level_interpreter ())))
2054 fputs_unfiltered (linebuffer
, stream
);
2058 /* Go through and output each character. Show line extension
2059 when this is necessary; prompt user for new page when this is
2062 lineptr
= linebuffer
;
2065 /* Possible new page. */
2066 if (filter
&& (lines_printed
>= lines_per_page
- 1))
2067 prompt_for_continue ();
2069 while (*lineptr
&& *lineptr
!= '\n')
2071 /* Print a single line. */
2072 if (*lineptr
== '\t')
2075 *wrap_pointer
++ = '\t';
2077 fputc_unfiltered ('\t', stream
);
2078 /* Shifting right by 3 produces the number of tab stops
2079 we have already passed, and then adding one and
2080 shifting left 3 advances to the next tab stop. */
2081 chars_printed
= ((chars_printed
>> 3) + 1) << 3;
2087 *wrap_pointer
++ = *lineptr
;
2089 fputc_unfiltered (*lineptr
, stream
);
2094 if (chars_printed
>= chars_per_line
)
2096 unsigned int save_chars
= chars_printed
;
2100 /* If we aren't actually wrapping, don't output newline --
2101 if chars_per_line is right, we probably just overflowed
2102 anyway; if it's wrong, let us keep going. */
2104 fputc_unfiltered ('\n', stream
);
2106 /* Possible new page. */
2107 if (lines_printed
>= lines_per_page
- 1)
2108 prompt_for_continue ();
2110 /* Now output indentation and wrapped string. */
2113 fputs_unfiltered (wrap_indent
, stream
);
2114 *wrap_pointer
= '\0'; /* Null-terminate saved stuff, */
2115 fputs_unfiltered (wrap_buffer
, stream
); /* and eject it. */
2116 /* FIXME, this strlen is what prevents wrap_indent from
2117 containing tabs. However, if we recurse to print it
2118 and count its chars, we risk trouble if wrap_indent is
2119 longer than (the user settable) chars_per_line.
2120 Note also that this can set chars_printed > chars_per_line
2121 if we are printing a long string. */
2122 chars_printed
= strlen (wrap_indent
)
2123 + (save_chars
- wrap_column
);
2124 wrap_pointer
= wrap_buffer
; /* Reset buffer */
2125 wrap_buffer
[0] = '\0';
2126 wrap_column
= 0; /* And disable fancy wrap */
2131 if (*lineptr
== '\n')
2134 wrap_here ((char *) 0); /* Spit out chars, cancel
2137 fputc_unfiltered ('\n', stream
);
2144 fputs_filtered (const char *linebuffer
, struct ui_file
*stream
)
2146 fputs_maybe_filtered (linebuffer
, stream
, 1);
2150 putchar_unfiltered (int c
)
2154 ui_file_write (gdb_stdout
, &buf
, 1);
2158 /* Write character C to gdb_stdout using GDB's paging mechanism and return C.
2159 May return nonlocally. */
2162 putchar_filtered (int c
)
2164 return fputc_filtered (c
, gdb_stdout
);
2168 fputc_unfiltered (int c
, struct ui_file
*stream
)
2172 ui_file_write (stream
, &buf
, 1);
2177 fputc_filtered (int c
, struct ui_file
*stream
)
2183 fputs_filtered (buf
, stream
);
2187 /* puts_debug is like fputs_unfiltered, except it prints special
2188 characters in printable fashion. */
2191 puts_debug (char *prefix
, char *string
, char *suffix
)
2195 /* Print prefix and suffix after each line. */
2196 static int new_line
= 1;
2197 static int return_p
= 0;
2198 static char *prev_prefix
= "";
2199 static char *prev_suffix
= "";
2201 if (*string
== '\n')
2204 /* If the prefix is changing, print the previous suffix, a new line,
2205 and the new prefix. */
2206 if ((return_p
|| (strcmp (prev_prefix
, prefix
) != 0)) && !new_line
)
2208 fputs_unfiltered (prev_suffix
, gdb_stdlog
);
2209 fputs_unfiltered ("\n", gdb_stdlog
);
2210 fputs_unfiltered (prefix
, gdb_stdlog
);
2213 /* Print prefix if we printed a newline during the previous call. */
2217 fputs_unfiltered (prefix
, gdb_stdlog
);
2220 prev_prefix
= prefix
;
2221 prev_suffix
= suffix
;
2223 /* Output characters in a printable format. */
2224 while ((ch
= *string
++) != '\0')
2230 fputc_unfiltered (ch
, gdb_stdlog
);
2233 fprintf_unfiltered (gdb_stdlog
, "\\x%02x", ch
& 0xff);
2237 fputs_unfiltered ("\\\\", gdb_stdlog
);
2240 fputs_unfiltered ("\\b", gdb_stdlog
);
2243 fputs_unfiltered ("\\f", gdb_stdlog
);
2247 fputs_unfiltered ("\\n", gdb_stdlog
);
2250 fputs_unfiltered ("\\r", gdb_stdlog
);
2253 fputs_unfiltered ("\\t", gdb_stdlog
);
2256 fputs_unfiltered ("\\v", gdb_stdlog
);
2260 return_p
= ch
== '\r';
2263 /* Print suffix if we printed a newline. */
2266 fputs_unfiltered (suffix
, gdb_stdlog
);
2267 fputs_unfiltered ("\n", gdb_stdlog
);
2272 /* Print a variable number of ARGS using format FORMAT. If this
2273 information is going to put the amount written (since the last call
2274 to REINITIALIZE_MORE_FILTER or the last page break) over the page size,
2275 call prompt_for_continue to get the users permision to continue.
2277 Unlike fprintf, this function does not return a value.
2279 We implement three variants, vfprintf (takes a vararg list and stream),
2280 fprintf (takes a stream to write on), and printf (the usual).
2282 Note also that a longjmp to top level may occur in this routine
2283 (since prompt_for_continue may do so) so this routine should not be
2284 called when cleanups are not in place. */
2287 vfprintf_maybe_filtered (struct ui_file
*stream
, const char *format
,
2288 va_list args
, int filter
)
2291 struct cleanup
*old_cleanups
;
2293 linebuffer
= xstrvprintf (format
, args
);
2294 old_cleanups
= make_cleanup (xfree
, linebuffer
);
2295 fputs_maybe_filtered (linebuffer
, stream
, filter
);
2296 do_cleanups (old_cleanups
);
2301 vfprintf_filtered (struct ui_file
*stream
, const char *format
, va_list args
)
2303 vfprintf_maybe_filtered (stream
, format
, args
, 1);
2307 vfprintf_unfiltered (struct ui_file
*stream
, const char *format
, va_list args
)
2310 struct cleanup
*old_cleanups
;
2312 linebuffer
= xstrvprintf (format
, args
);
2313 old_cleanups
= make_cleanup (xfree
, linebuffer
);
2314 if (debug_timestamp
&& stream
== gdb_stdlog
)
2320 gettimeofday (&tm
, NULL
);
2322 len
= strlen (linebuffer
);
2323 need_nl
= (len
> 0 && linebuffer
[len
- 1] != '\n');
2325 timestamp
= xstrprintf ("%ld:%ld %s%s",
2326 (long) tm
.tv_sec
, (long) tm
.tv_usec
,
2328 need_nl
? "\n": "");
2329 make_cleanup (xfree
, timestamp
);
2330 fputs_unfiltered (timestamp
, stream
);
2333 fputs_unfiltered (linebuffer
, stream
);
2334 do_cleanups (old_cleanups
);
2338 vprintf_filtered (const char *format
, va_list args
)
2340 vfprintf_maybe_filtered (gdb_stdout
, format
, args
, 1);
2344 vprintf_unfiltered (const char *format
, va_list args
)
2346 vfprintf_unfiltered (gdb_stdout
, format
, args
);
2350 fprintf_filtered (struct ui_file
*stream
, const char *format
, ...)
2354 va_start (args
, format
);
2355 vfprintf_filtered (stream
, format
, args
);
2360 fprintf_unfiltered (struct ui_file
*stream
, const char *format
, ...)
2364 va_start (args
, format
);
2365 vfprintf_unfiltered (stream
, format
, args
);
2369 /* Like fprintf_filtered, but prints its result indented.
2370 Called as fprintfi_filtered (spaces, stream, format, ...); */
2373 fprintfi_filtered (int spaces
, struct ui_file
*stream
, const char *format
,
2378 va_start (args
, format
);
2379 print_spaces_filtered (spaces
, stream
);
2381 vfprintf_filtered (stream
, format
, args
);
2387 printf_filtered (const char *format
, ...)
2391 va_start (args
, format
);
2392 vfprintf_filtered (gdb_stdout
, format
, args
);
2398 printf_unfiltered (const char *format
, ...)
2402 va_start (args
, format
);
2403 vfprintf_unfiltered (gdb_stdout
, format
, args
);
2407 /* Like printf_filtered, but prints it's result indented.
2408 Called as printfi_filtered (spaces, format, ...); */
2411 printfi_filtered (int spaces
, const char *format
, ...)
2415 va_start (args
, format
);
2416 print_spaces_filtered (spaces
, gdb_stdout
);
2417 vfprintf_filtered (gdb_stdout
, format
, args
);
2421 /* Easy -- but watch out!
2423 This routine is *not* a replacement for puts()! puts() appends a newline.
2424 This one doesn't, and had better not! */
2427 puts_filtered (const char *string
)
2429 fputs_filtered (string
, gdb_stdout
);
2433 puts_unfiltered (const char *string
)
2435 fputs_unfiltered (string
, gdb_stdout
);
2438 /* Return a pointer to N spaces and a null. The pointer is good
2439 until the next call to here. */
2444 static char *spaces
= 0;
2445 static int max_spaces
= -1;
2451 spaces
= (char *) xmalloc (n
+ 1);
2452 for (t
= spaces
+ n
; t
!= spaces
;)
2458 return spaces
+ max_spaces
- n
;
2461 /* Print N spaces. */
2463 print_spaces_filtered (int n
, struct ui_file
*stream
)
2465 fputs_filtered (n_spaces (n
), stream
);
2468 /* C++/ObjC demangler stuff. */
2470 /* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language
2471 LANG, using demangling args ARG_MODE, and print it filtered to STREAM.
2472 If the name is not mangled, or the language for the name is unknown, or
2473 demangling is off, the name is printed in its "raw" form. */
2476 fprintf_symbol_filtered (struct ui_file
*stream
, const char *name
,
2477 enum language lang
, int arg_mode
)
2483 /* If user wants to see raw output, no problem. */
2486 fputs_filtered (name
, stream
);
2490 demangled
= language_demangle (language_def (lang
), name
, arg_mode
);
2491 fputs_filtered (demangled
? demangled
: name
, stream
);
2492 if (demangled
!= NULL
)
2500 /* Do a strcmp() type operation on STRING1 and STRING2, ignoring any
2501 differences in whitespace. Returns 0 if they match, non-zero if they
2502 don't (slightly different than strcmp()'s range of return values).
2504 As an extra hack, string1=="FOO(ARGS)" matches string2=="FOO".
2505 This "feature" is useful when searching for matching C++ function names
2506 (such as if the user types 'break FOO', where FOO is a mangled C++
2510 strcmp_iw (const char *string1
, const char *string2
)
2512 while ((*string1
!= '\0') && (*string2
!= '\0'))
2514 while (isspace (*string1
))
2518 while (isspace (*string2
))
2522 if (case_sensitivity
== case_sensitive_on
&& *string1
!= *string2
)
2524 if (case_sensitivity
== case_sensitive_off
2525 && (tolower ((unsigned char) *string1
)
2526 != tolower ((unsigned char) *string2
)))
2528 if (*string1
!= '\0')
2534 return (*string1
!= '\0' && *string1
!= '(') || (*string2
!= '\0');
2537 /* This is like strcmp except that it ignores whitespace and treats
2538 '(' as the first non-NULL character in terms of ordering. Like
2539 strcmp (and unlike strcmp_iw), it returns negative if STRING1 <
2540 STRING2, 0 if STRING2 = STRING2, and positive if STRING1 > STRING2
2541 according to that ordering.
2543 If a list is sorted according to this function and if you want to
2544 find names in the list that match some fixed NAME according to
2545 strcmp_iw(LIST_ELT, NAME), then the place to start looking is right
2546 where this function would put NAME.
2548 This function must be neutral to the CASE_SENSITIVITY setting as the user
2549 may choose it during later lookup. Therefore this function always sorts
2550 primarily case-insensitively and secondarily case-sensitively.
2552 Here are some examples of why using strcmp to sort is a bad idea:
2556 Say your partial symtab contains: "foo<char *>", "goo". Then, if
2557 we try to do a search for "foo<char*>", strcmp will locate this
2558 after "foo<char *>" and before "goo". Then lookup_partial_symbol
2559 will start looking at strings beginning with "goo", and will never
2560 see the correct match of "foo<char *>".
2562 Parenthesis example:
2564 In practice, this is less like to be an issue, but I'll give it a
2565 shot. Let's assume that '$' is a legitimate character to occur in
2566 symbols. (Which may well even be the case on some systems.) Then
2567 say that the partial symbol table contains "foo$" and "foo(int)".
2568 strcmp will put them in this order, since '$' < '('. Now, if the
2569 user searches for "foo", then strcmp will sort "foo" before "foo$".
2570 Then lookup_partial_symbol will notice that strcmp_iw("foo$",
2571 "foo") is false, so it won't proceed to the actual match of
2572 "foo(int)" with "foo". */
2575 strcmp_iw_ordered (const char *string1
, const char *string2
)
2577 const char *saved_string1
= string1
, *saved_string2
= string2
;
2578 enum case_sensitivity case_pass
= case_sensitive_off
;
2582 /* C1 and C2 are valid only if *string1 != '\0' && *string2 != '\0'.
2583 Provide stub characters if we are already at the end of one of the
2585 char c1
= 'X', c2
= 'X';
2587 while (*string1
!= '\0' && *string2
!= '\0')
2589 while (isspace (*string1
))
2591 while (isspace (*string2
))
2596 case case_sensitive_off
:
2597 c1
= tolower ((unsigned char) *string1
);
2598 c2
= tolower ((unsigned char) *string2
);
2600 case case_sensitive_on
:
2608 if (*string1
!= '\0')
2617 /* Characters are non-equal unless they're both '\0'; we want to
2618 make sure we get the comparison right according to our
2619 comparison in the cases where one of them is '\0' or '('. */
2621 if (*string2
== '\0')
2626 if (*string2
== '\0')
2631 if (*string2
== '\0' || *string2
== '(')
2640 if (case_pass
== case_sensitive_on
)
2643 /* Otherwise the strings were equal in case insensitive way, make
2644 a more fine grained comparison in a case sensitive way. */
2646 case_pass
= case_sensitive_on
;
2647 string1
= saved_string1
;
2648 string2
= saved_string2
;
2652 /* A simple comparison function with opposite semantics to strcmp. */
2655 streq (const char *lhs
, const char *rhs
)
2657 return !strcmp (lhs
, rhs
);
2663 ** Answer whether string_to_compare is a full or partial match to
2664 ** template_string. The partial match must be in sequence starting
2668 subset_compare (char *string_to_compare
, char *template_string
)
2672 if (template_string
!= (char *) NULL
&& string_to_compare
!= (char *) NULL
2673 && strlen (string_to_compare
) <= strlen (template_string
))
2675 (startswith (template_string
, string_to_compare
));
2682 show_debug_timestamp (struct ui_file
*file
, int from_tty
,
2683 struct cmd_list_element
*c
, const char *value
)
2685 fprintf_filtered (file
, _("Timestamping debugging messages is %s.\n"),
2691 initialize_utils (void)
2693 add_setshow_uinteger_cmd ("width", class_support
, &chars_per_line
, _("\
2694 Set number of characters where GDB should wrap lines of its output."), _("\
2695 Show number of characters where GDB should wrap lines of its output."), _("\
2696 This affects where GDB wraps its output to fit the screen width.\n\
2697 Setting this to \"unlimited\" or zero prevents GDB from wrapping its output."),
2699 show_chars_per_line
,
2700 &setlist
, &showlist
);
2702 add_setshow_uinteger_cmd ("height", class_support
, &lines_per_page
, _("\
2703 Set number of lines in a page for GDB output pagination."), _("\
2704 Show number of lines in a page for GDB output pagination."), _("\
2705 This affects the number of lines after which GDB will pause\n\
2706 its output and ask you whether to continue.\n\
2707 Setting this to \"unlimited\" or zero causes GDB never pause during output."),
2709 show_lines_per_page
,
2710 &setlist
, &showlist
);
2712 add_setshow_boolean_cmd ("pagination", class_support
,
2713 &pagination_enabled
, _("\
2714 Set state of GDB output pagination."), _("\
2715 Show state of GDB output pagination."), _("\
2716 When pagination is ON, GDB pauses at end of each screenful of\n\
2717 its output and asks you whether to continue.\n\
2718 Turning pagination off is an alternative to \"set height unlimited\"."),
2720 show_pagination_enabled
,
2721 &setlist
, &showlist
);
2723 add_setshow_boolean_cmd ("sevenbit-strings", class_support
,
2724 &sevenbit_strings
, _("\
2725 Set printing of 8-bit characters in strings as \\nnn."), _("\
2726 Show printing of 8-bit characters in strings as \\nnn."), NULL
,
2728 show_sevenbit_strings
,
2729 &setprintlist
, &showprintlist
);
2731 add_setshow_boolean_cmd ("timestamp", class_maintenance
,
2732 &debug_timestamp
, _("\
2733 Set timestamping of debugging messages."), _("\
2734 Show timestamping of debugging messages."), _("\
2735 When set, debugging messages will be marked with seconds and microseconds."),
2737 show_debug_timestamp
,
2738 &setdebuglist
, &showdebuglist
);
2742 paddress (struct gdbarch
*gdbarch
, CORE_ADDR addr
)
2744 /* Truncate address to the size of a target address, avoiding shifts
2745 larger or equal than the width of a CORE_ADDR. The local
2746 variable ADDR_BIT stops the compiler reporting a shift overflow
2747 when it won't occur. */
2748 /* NOTE: This assumes that the significant address information is
2749 kept in the least significant bits of ADDR - the upper bits were
2750 either zero or sign extended. Should gdbarch_address_to_pointer or
2751 some ADDRESS_TO_PRINTABLE() be used to do the conversion? */
2753 int addr_bit
= gdbarch_addr_bit (gdbarch
);
2755 if (addr_bit
< (sizeof (CORE_ADDR
) * HOST_CHAR_BIT
))
2756 addr
&= ((CORE_ADDR
) 1 << addr_bit
) - 1;
2757 return hex_string (addr
);
2760 /* This function is described in "defs.h". */
2763 print_core_address (struct gdbarch
*gdbarch
, CORE_ADDR address
)
2765 int addr_bit
= gdbarch_addr_bit (gdbarch
);
2767 if (addr_bit
< (sizeof (CORE_ADDR
) * HOST_CHAR_BIT
))
2768 address
&= ((CORE_ADDR
) 1 << addr_bit
) - 1;
2770 /* FIXME: cagney/2002-05-03: Need local_address_string() function
2771 that returns the language localized string formatted to a width
2772 based on gdbarch_addr_bit. */
2774 return hex_string_custom (address
, 8);
2776 return hex_string_custom (address
, 16);
2779 /* Callback hash_f for htab_create_alloc or htab_create_alloc_ex. */
2782 core_addr_hash (const void *ap
)
2784 const CORE_ADDR
*addrp
= ap
;
2789 /* Callback eq_f for htab_create_alloc or htab_create_alloc_ex. */
2792 core_addr_eq (const void *ap
, const void *bp
)
2794 const CORE_ADDR
*addr_ap
= ap
;
2795 const CORE_ADDR
*addr_bp
= bp
;
2797 return *addr_ap
== *addr_bp
;
2800 /* Convert a string back into a CORE_ADDR. */
2802 string_to_core_addr (const char *my_string
)
2806 if (my_string
[0] == '0' && tolower (my_string
[1]) == 'x')
2808 /* Assume that it is in hex. */
2811 for (i
= 2; my_string
[i
] != '\0'; i
++)
2813 if (isdigit (my_string
[i
]))
2814 addr
= (my_string
[i
] - '0') + (addr
* 16);
2815 else if (isxdigit (my_string
[i
]))
2816 addr
= (tolower (my_string
[i
]) - 'a' + 0xa) + (addr
* 16);
2818 error (_("invalid hex \"%s\""), my_string
);
2823 /* Assume that it is in decimal. */
2826 for (i
= 0; my_string
[i
] != '\0'; i
++)
2828 if (isdigit (my_string
[i
]))
2829 addr
= (my_string
[i
] - '0') + (addr
* 10);
2831 error (_("invalid decimal \"%s\""), my_string
);
2839 gdb_realpath (const char *filename
)
2841 /* On most hosts, we rely on canonicalize_file_name to compute
2842 the FILENAME's realpath.
2844 But the situation is slightly more complex on Windows, due to some
2845 versions of GCC which were reported to generate paths where
2846 backlashes (the directory separator) were doubled. For instance:
2847 c:\\some\\double\\slashes\\dir
2849 c:\some\double\slashes\dir
2850 Those double-slashes were getting in the way when comparing paths,
2851 for instance when trying to insert a breakpoint as follow:
2852 (gdb) b c:/some/double/slashes/dir/foo.c:4
2853 No source file named c:/some/double/slashes/dir/foo.c:4.
2854 (gdb) b c:\some\double\slashes\dir\foo.c:4
2855 No source file named c:\some\double\slashes\dir\foo.c:4.
2856 To prevent this from happening, we need this function to always
2857 strip those extra backslashes. While canonicalize_file_name does
2858 perform this simplification, it only works when the path is valid.
2859 Since the simplification would be useful even if the path is not
2860 valid (one can always set a breakpoint on a file, even if the file
2861 does not exist locally), we rely instead on GetFullPathName to
2862 perform the canonicalization. */
2864 #if defined (_WIN32)
2867 DWORD len
= GetFullPathName (filename
, MAX_PATH
, buf
, NULL
);
2869 /* The file system is case-insensitive but case-preserving.
2870 So it is important we do not lowercase the path. Otherwise,
2871 we might not be able to display the original casing in a given
2873 if (len
> 0 && len
< MAX_PATH
)
2874 return xstrdup (buf
);
2878 char *rp
= canonicalize_file_name (filename
);
2885 /* This system is a lost cause, just dup the buffer. */
2886 return xstrdup (filename
);
2889 /* Return a copy of FILENAME, with its directory prefix canonicalized
2893 gdb_realpath_keepfile (const char *filename
)
2895 const char *base_name
= lbasename (filename
);
2900 /* Extract the basename of filename, and return immediately
2901 a copy of filename if it does not contain any directory prefix. */
2902 if (base_name
== filename
)
2903 return xstrdup (filename
);
2905 dir_name
= (char *) alloca ((size_t) (base_name
- filename
+ 2));
2906 /* Allocate enough space to store the dir_name + plus one extra
2907 character sometimes needed under Windows (see below), and
2908 then the closing \000 character. */
2909 strncpy (dir_name
, filename
, base_name
- filename
);
2910 dir_name
[base_name
- filename
] = '\000';
2912 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
2913 /* We need to be careful when filename is of the form 'd:foo', which
2914 is equivalent of d:./foo, which is totally different from d:/foo. */
2915 if (strlen (dir_name
) == 2 && isalpha (dir_name
[0]) && dir_name
[1] == ':')
2918 dir_name
[3] = '\000';
2922 /* Canonicalize the directory prefix, and build the resulting
2923 filename. If the dirname realpath already contains an ending
2924 directory separator, avoid doubling it. */
2925 real_path
= gdb_realpath (dir_name
);
2926 if (IS_DIR_SEPARATOR (real_path
[strlen (real_path
) - 1]))
2927 result
= concat (real_path
, base_name
, (char *) NULL
);
2929 result
= concat (real_path
, SLASH_STRING
, base_name
, (char *) NULL
);
2935 /* Return PATH in absolute form, performing tilde-expansion if necessary.
2936 PATH cannot be NULL or the empty string.
2937 This does not resolve symlinks however, use gdb_realpath for that.
2938 Space for the result is allocated with malloc.
2939 If the path is already absolute, it is strdup'd.
2940 If there is a problem computing the absolute path, the path is returned
2941 unchanged (still strdup'd). */
2944 gdb_abspath (const char *path
)
2946 gdb_assert (path
!= NULL
&& path
[0] != '\0');
2949 return tilde_expand (path
);
2951 if (IS_ABSOLUTE_PATH (path
))
2952 return xstrdup (path
);
2954 /* Beware the // my son, the Emacs barfs, the botch that catch... */
2955 return concat (current_directory
,
2956 IS_DIR_SEPARATOR (current_directory
[strlen (current_directory
) - 1])
2957 ? "" : SLASH_STRING
,
2958 path
, (char *) NULL
);
2962 align_up (ULONGEST v
, int n
)
2964 /* Check that N is really a power of two. */
2965 gdb_assert (n
&& (n
& (n
-1)) == 0);
2966 return (v
+ n
- 1) & -n
;
2970 align_down (ULONGEST v
, int n
)
2972 /* Check that N is really a power of two. */
2973 gdb_assert (n
&& (n
& (n
-1)) == 0);
2977 /* Allocation function for the libiberty hash table which uses an
2978 obstack. The obstack is passed as DATA. */
2981 hashtab_obstack_allocate (void *data
, size_t size
, size_t count
)
2983 size_t total
= size
* count
;
2984 void *ptr
= obstack_alloc ((struct obstack
*) data
, total
);
2986 memset (ptr
, 0, total
);
2990 /* Trivial deallocation function for the libiberty splay tree and hash
2991 table - don't deallocate anything. Rely on later deletion of the
2992 obstack. DATA will be the obstack, although it is not needed
2996 dummy_obstack_deallocate (void *object
, void *data
)
3001 /* Simple, portable version of dirname that does not modify its
3005 ldirname (const char *filename
)
3007 const char *base
= lbasename (filename
);
3010 while (base
> filename
&& IS_DIR_SEPARATOR (base
[-1]))
3013 if (base
== filename
)
3016 dirname
= (char *) xmalloc (base
- filename
+ 2);
3017 memcpy (dirname
, filename
, base
- filename
);
3019 /* On DOS based file systems, convert "d:foo" to "d:.", so that we
3020 create "d:./bar" later instead of the (different) "d:/bar". */
3021 if (base
- filename
== 2 && IS_ABSOLUTE_PATH (base
)
3022 && !IS_DIR_SEPARATOR (filename
[0]))
3023 dirname
[base
++ - filename
] = '.';
3025 dirname
[base
- filename
] = '\0';
3029 /* Call libiberty's buildargv, and return the result.
3030 If buildargv fails due to out-of-memory, call nomem.
3031 Therefore, the returned value is guaranteed to be non-NULL,
3032 unless the parameter itself is NULL. */
3035 gdb_buildargv (const char *s
)
3037 char **argv
= buildargv (s
);
3039 if (s
!= NULL
&& argv
== NULL
)
3045 compare_positive_ints (const void *ap
, const void *bp
)
3047 /* Because we know we're comparing two ints which are positive,
3048 there's no danger of overflow here. */
3049 return * (int *) ap
- * (int *) bp
;
3052 /* String compare function for qsort. */
3055 compare_strings (const void *arg1
, const void *arg2
)
3057 const char **s1
= (const char **) arg1
;
3058 const char **s2
= (const char **) arg2
;
3060 return strcmp (*s1
, *s2
);
3063 #define AMBIGUOUS_MESS1 ".\nMatching formats:"
3064 #define AMBIGUOUS_MESS2 \
3065 ".\nUse \"set gnutarget format-name\" to specify the format."
3068 gdb_bfd_errmsg (bfd_error_type error_tag
, char **matching
)
3074 /* Check if errmsg just need simple return. */
3075 if (error_tag
!= bfd_error_file_ambiguously_recognized
|| matching
== NULL
)
3076 return bfd_errmsg (error_tag
);
3078 ret_len
= strlen (bfd_errmsg (error_tag
)) + strlen (AMBIGUOUS_MESS1
)
3079 + strlen (AMBIGUOUS_MESS2
);
3080 for (p
= matching
; *p
; p
++)
3081 ret_len
+= strlen (*p
) + 1;
3082 ret
= (char *) xmalloc (ret_len
+ 1);
3084 make_cleanup (xfree
, ret
);
3086 strcpy (retp
, bfd_errmsg (error_tag
));
3087 retp
+= strlen (retp
);
3089 strcpy (retp
, AMBIGUOUS_MESS1
);
3090 retp
+= strlen (retp
);
3092 for (p
= matching
; *p
; p
++)
3094 sprintf (retp
, " %s", *p
);
3095 retp
+= strlen (retp
);
3099 strcpy (retp
, AMBIGUOUS_MESS2
);
3104 /* Return ARGS parsed as a valid pid, or throw an error. */
3107 parse_pid_to_attach (const char *args
)
3113 error_no_arg (_("process-id to attach"));
3115 dummy
= (char *) args
;
3116 pid
= strtoul (args
, &dummy
, 0);
3117 /* Some targets don't set errno on errors, grrr! */
3118 if ((pid
== 0 && dummy
== args
) || dummy
!= &args
[strlen (args
)])
3119 error (_("Illegal process-id: %s."), args
);
3124 /* Helper for make_bpstat_clear_actions_cleanup. */
3127 do_bpstat_clear_actions_cleanup (void *unused
)
3129 bpstat_clear_actions ();
3132 /* Call bpstat_clear_actions for the case an exception is throw. You should
3133 discard_cleanups if no exception is caught. */
3136 make_bpstat_clear_actions_cleanup (void)
3138 return make_cleanup (do_bpstat_clear_actions_cleanup
, NULL
);
3141 /* Check for GCC >= 4.x according to the symtab->producer string. Return minor
3142 version (x) of 4.x in such case. If it is not GCC or it is GCC older than
3143 4.x return -1. If it is GCC 5.x or higher return INT_MAX. */
3146 producer_is_gcc_ge_4 (const char *producer
)
3150 if (! producer_is_gcc (producer
, &major
, &minor
))
3159 /* Returns nonzero if the given PRODUCER string is GCC and sets the MAJOR
3160 and MINOR versions when not NULL. Returns zero if the given PRODUCER
3161 is NULL or it isn't GCC. */
3164 producer_is_gcc (const char *producer
, int *major
, int *minor
)
3168 if (producer
!= NULL
&& startswith (producer
, "GNU "))
3177 /* Skip any identifier after "GNU " - such as "C11" "C++" or "Java".
3178 A full producer string might look like:
3180 "GNU Fortran 4.8.2 20140120 (Red Hat 4.8.2-16) -mtune=generic ..."
3181 "GNU C++14 5.0.0 20150123 (experimental)"
3183 cs
= &producer
[strlen ("GNU ")];
3184 while (*cs
&& !isspace (*cs
))
3186 if (*cs
&& isspace (*cs
))
3188 if (sscanf (cs
, "%d.%d", major
, minor
) == 2)
3192 /* Not recognized as GCC. */
3196 /* Helper for make_cleanup_free_char_ptr_vec. */
3199 do_free_char_ptr_vec (void *arg
)
3201 VEC (char_ptr
) *char_ptr_vec
= arg
;
3203 free_char_ptr_vec (char_ptr_vec
);
3206 /* Make cleanup handler calling xfree for each element of CHAR_PTR_VEC and
3207 final VEC_free for CHAR_PTR_VEC itself.
3209 You must not modify CHAR_PTR_VEC after this cleanup registration as the
3210 CHAR_PTR_VEC base address may change on its updates. Contrary to VEC_free
3211 this function does not (cannot) clear the pointer. */
3214 make_cleanup_free_char_ptr_vec (VEC (char_ptr
) *char_ptr_vec
)
3216 return make_cleanup (do_free_char_ptr_vec
, char_ptr_vec
);
3219 /* Substitute all occurences of string FROM by string TO in *STRINGP. *STRINGP
3220 must come from xrealloc-compatible allocator and it may be updated. FROM
3221 needs to be delimited by IS_DIR_SEPARATOR or DIRNAME_SEPARATOR (or be
3222 located at the start or end of *STRINGP. */
3225 substitute_path_component (char **stringp
, const char *from
, const char *to
)
3227 char *string
= *stringp
, *s
;
3228 const size_t from_len
= strlen (from
);
3229 const size_t to_len
= strlen (to
);
3233 s
= strstr (s
, from
);
3237 if ((s
== string
|| IS_DIR_SEPARATOR (s
[-1])
3238 || s
[-1] == DIRNAME_SEPARATOR
)
3239 && (s
[from_len
] == '\0' || IS_DIR_SEPARATOR (s
[from_len
])
3240 || s
[from_len
] == DIRNAME_SEPARATOR
))
3245 = (char *) 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
= 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
);