1 /* General utility routines for GDB, the GNU debugger.
3 Copyright (C) 1986-2013 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
21 #include "dyn-string.h"
22 #include "gdb_assert.h"
24 #include "gdb_string.h"
26 #include "event-top.h"
27 #include "exceptions.h"
28 #include "gdbthread.h"
31 #ifdef HAVE_SYS_RESOURCE_H
32 #include <sys/resource.h>
33 #endif /* HAVE_SYS_RESOURCE_H */
36 #include "tui/tui.h" /* For tui_get_command_dimension. */
43 /* SunOS's curses.h has a '#define reg register' in it. Thank you Sun. */
49 #include "timeval-utils.h"
54 #include "gdb-demangle.h"
55 #include "expression.h"
59 #include "filenames.h"
61 #include "gdb_obstack.h"
67 #include "inferior.h" /* for signed_pointer_to_address */
69 #include <sys/param.h> /* For MAXPATHLEN */
71 #include "gdb_curses.h"
73 #include "readline/readline.h"
78 #include "gdb_usleep.h"
80 #include "gdb_regex.h"
83 extern PTR
malloc (); /* ARI: PTR */
85 #if !HAVE_DECL_REALLOC
86 extern PTR
realloc (); /* ARI: PTR */
92 void (*deprecated_error_begin_hook
) (void);
94 /* Prototypes for local functions */
96 static void vfprintf_maybe_filtered (struct ui_file
*, const char *,
97 va_list, int) ATTRIBUTE_PRINTF (2, 0);
99 static void fputs_maybe_filtered (const char *, struct ui_file
*, int);
101 static void prompt_for_continue (void);
103 static void set_screen_size (void);
104 static void set_width (void);
106 /* Time spent in prompt_for_continue in the currently executing command
107 waiting for user to respond.
108 Initialized in make_command_stats_cleanup.
109 Modified in prompt_for_continue and defaulted_query.
110 Used in report_command_stats. */
112 static struct timeval prompt_for_continue_wait_time
;
114 /* A flag indicating whether to timestamp debugging messages. */
116 static int debug_timestamp
= 0;
118 /* Nonzero if we have job control. */
123 /* Nonzero means a quit has been requested. */
126 #endif /* HAVE_PYTHON */
128 /* Nonzero means quit immediately if Control-C is typed now, rather
129 than waiting until QUIT is executed. Be careful in setting this;
130 code which executes with immediate_quit set has to be very careful
131 about being able to deal with being interrupted at any time. It is
132 almost always better to use QUIT; the only exception I can think of
133 is being able to quit out of a system call (using EINTR loses if
134 the SIGINT happens between the previous QUIT and the system call).
135 To immediately quit in the case in which a SIGINT happens between
136 the previous QUIT and setting immediate_quit (desirable anytime we
137 expect to block), call QUIT after setting immediate_quit. */
143 /* Clear the quit flag. */
146 clear_quit_flag (void)
151 /* Set the quit flag. */
159 /* Return true if the quit flag has been set, false otherwise. */
162 check_quit_flag (void)
164 /* This is written in a particular way to avoid races. */
174 #endif /* HAVE_PYTHON */
176 /* Nonzero means that strings with character values >0x7F should be printed
177 as octal escapes. Zero means just print the value (e.g. it's an
178 international character, and the terminal or window can cope.) */
180 int sevenbit_strings
= 0;
182 show_sevenbit_strings (struct ui_file
*file
, int from_tty
,
183 struct cmd_list_element
*c
, const char *value
)
185 fprintf_filtered (file
, _("Printing of 8-bit characters "
186 "in strings as \\nnn is %s.\n"),
190 /* String to be printed before error messages, if any. */
192 char *error_pre_print
;
194 /* String to be printed before quit messages, if any. */
196 char *quit_pre_print
;
198 /* String to be printed before warning messages, if any. */
200 char *warning_pre_print
= "\nwarning: ";
202 int pagination_enabled
= 1;
204 show_pagination_enabled (struct ui_file
*file
, int from_tty
,
205 struct cmd_list_element
*c
, const char *value
)
207 fprintf_filtered (file
, _("State of pagination is %s.\n"), value
);
211 /* Cleanup utilities.
213 These are not defined in cleanups.c (nor declared in cleanups.h)
214 because while they use the "cleanup API" they are not part of the
218 do_freeargv (void *arg
)
220 freeargv ((char **) arg
);
224 make_cleanup_freeargv (char **arg
)
226 return make_cleanup (do_freeargv
, arg
);
230 do_dyn_string_delete (void *arg
)
232 dyn_string_delete ((dyn_string_t
) arg
);
236 make_cleanup_dyn_string_delete (dyn_string_t arg
)
238 return make_cleanup (do_dyn_string_delete
, arg
);
242 do_bfd_close_cleanup (void *arg
)
248 make_cleanup_bfd_unref (bfd
*abfd
)
250 return make_cleanup (do_bfd_close_cleanup
, abfd
);
254 do_close_cleanup (void *arg
)
262 make_cleanup_close (int fd
)
264 int *saved_fd
= xmalloc (sizeof (fd
));
267 return make_cleanup_dtor (do_close_cleanup
, saved_fd
, xfree
);
270 /* Helper function which does the work for make_cleanup_fclose. */
273 do_fclose_cleanup (void *arg
)
280 /* Return a new cleanup that closes FILE. */
283 make_cleanup_fclose (FILE *file
)
285 return make_cleanup (do_fclose_cleanup
, file
);
288 /* Helper function which does the work for make_cleanup_obstack_free. */
291 do_obstack_free (void *arg
)
293 struct obstack
*ob
= arg
;
295 obstack_free (ob
, NULL
);
298 /* Return a new cleanup that frees OBSTACK. */
301 make_cleanup_obstack_free (struct obstack
*obstack
)
303 return make_cleanup (do_obstack_free
, obstack
);
307 do_ui_file_delete (void *arg
)
309 ui_file_delete (arg
);
313 make_cleanup_ui_file_delete (struct ui_file
*arg
)
315 return make_cleanup (do_ui_file_delete
, arg
);
318 /* Helper function for make_cleanup_ui_out_redirect_pop. */
321 do_ui_out_redirect_pop (void *arg
)
323 struct ui_out
*uiout
= arg
;
325 if (ui_out_redirect (uiout
, NULL
) < 0)
326 warning (_("Cannot restore redirection of the current output protocol"));
329 /* Return a new cleanup that pops the last redirection by ui_out_redirect
330 with NULL parameter. */
333 make_cleanup_ui_out_redirect_pop (struct ui_out
*uiout
)
335 return make_cleanup (do_ui_out_redirect_pop
, uiout
);
339 do_free_section_addr_info (void *arg
)
341 free_section_addr_info (arg
);
345 make_cleanup_free_section_addr_info (struct section_addr_info
*addrs
)
347 return make_cleanup (do_free_section_addr_info
, addrs
);
350 struct restore_integer_closure
357 restore_integer (void *p
)
359 struct restore_integer_closure
*closure
= p
;
361 *(closure
->variable
) = closure
->value
;
364 /* Remember the current value of *VARIABLE and make it restored when
365 the cleanup is run. */
368 make_cleanup_restore_integer (int *variable
)
370 struct restore_integer_closure
*c
=
371 xmalloc (sizeof (struct restore_integer_closure
));
373 c
->variable
= variable
;
374 c
->value
= *variable
;
376 return make_cleanup_dtor (restore_integer
, (void *) c
, xfree
);
379 /* Remember the current value of *VARIABLE and make it restored when
380 the cleanup is run. */
383 make_cleanup_restore_uinteger (unsigned int *variable
)
385 return make_cleanup_restore_integer ((int *) variable
);
388 /* Helper for make_cleanup_unpush_target. */
391 do_unpush_target (void *arg
)
393 struct target_ops
*ops
= arg
;
398 /* Return a new cleanup that unpushes OPS. */
401 make_cleanup_unpush_target (struct target_ops
*ops
)
403 return make_cleanup (do_unpush_target
, ops
);
406 /* Helper for make_cleanup_htab_delete compile time checking the types. */
409 do_htab_delete_cleanup (void *htab_voidp
)
411 htab_t htab
= htab_voidp
;
416 /* Return a new cleanup that deletes HTAB. */
419 make_cleanup_htab_delete (htab_t htab
)
421 return make_cleanup (do_htab_delete_cleanup
, htab
);
424 struct restore_ui_file_closure
426 struct ui_file
**variable
;
427 struct ui_file
*value
;
431 do_restore_ui_file (void *p
)
433 struct restore_ui_file_closure
*closure
= p
;
435 *(closure
->variable
) = closure
->value
;
438 /* Remember the current value of *VARIABLE and make it restored when
439 the cleanup is run. */
442 make_cleanup_restore_ui_file (struct ui_file
**variable
)
444 struct restore_ui_file_closure
*c
= XNEW (struct restore_ui_file_closure
);
446 c
->variable
= variable
;
447 c
->value
= *variable
;
449 return make_cleanup_dtor (do_restore_ui_file
, (void *) c
, xfree
);
452 /* Helper for make_cleanup_value_free_to_mark. */
455 do_value_free_to_mark (void *value
)
457 value_free_to_mark ((struct value
*) value
);
460 /* Free all values allocated since MARK was obtained by value_mark
461 (except for those released) when the cleanup is run. */
464 make_cleanup_value_free_to_mark (struct value
*mark
)
466 return make_cleanup (do_value_free_to_mark
, mark
);
469 /* Helper for make_cleanup_value_free. */
472 do_value_free (void *value
)
480 make_cleanup_value_free (struct value
*value
)
482 return make_cleanup (do_value_free
, value
);
485 /* Helper for make_cleanup_free_so. */
488 do_free_so (void *arg
)
490 struct so_list
*so
= arg
;
495 /* Make cleanup handler calling free_so for SO. */
498 make_cleanup_free_so (struct so_list
*so
)
500 return make_cleanup (do_free_so
, so
);
503 /* Helper for make_cleanup_restore_current_language. */
506 do_restore_current_language (void *p
)
508 enum language saved_lang
= (uintptr_t) p
;
510 set_language (saved_lang
);
513 /* Remember the current value of CURRENT_LANGUAGE and make it restored when
514 the cleanup is run. */
517 make_cleanup_restore_current_language (void)
519 enum language saved_lang
= current_language
->la_language
;
521 return make_cleanup (do_restore_current_language
,
522 (void *) (uintptr_t) saved_lang
);
525 /* This function is useful for cleanups.
529 old_chain = make_cleanup (free_current_contents, &foo);
531 to arrange to free the object thus allocated. */
534 free_current_contents (void *ptr
)
536 void **location
= ptr
;
538 if (location
== NULL
)
539 internal_error (__FILE__
, __LINE__
,
540 _("free_current_contents: NULL pointer"));
541 if (*location
!= NULL
)
548 /* If nonzero, display time usage both at startup and for each command. */
550 static int display_time
;
552 /* If nonzero, display space usage both at startup and for each command. */
554 static int display_space
;
556 /* Records a run time and space usage to be used as a base for
557 reporting elapsed time or change in space. In addition,
558 the msg_type field indicates whether the saved time is from the
559 beginning of GDB execution (0) or the beginning of an individual
560 command execution (1). */
565 struct timeval start_wall_time
;
569 /* Set whether to display time statistics to NEW_VALUE (non-zero
572 set_display_time (int new_value
)
574 display_time
= new_value
;
577 /* Set whether to display space statistics to NEW_VALUE (non-zero
580 set_display_space (int new_value
)
582 display_space
= new_value
;
585 /* As indicated by display_time and display_space, report GDB's elapsed time
586 and space usage from the base time and space provided in ARG, which
587 must be a pointer to a struct cmd_stat. This function is intended
588 to be called as a cleanup. */
590 report_command_stats (void *arg
)
592 struct cmd_stats
*start_stats
= (struct cmd_stats
*) arg
;
593 int msg_type
= start_stats
->msg_type
;
597 long cmd_time
= get_run_time () - start_stats
->start_cpu_time
;
598 struct timeval now_wall_time
, delta_wall_time
;
600 gettimeofday (&now_wall_time
, NULL
);
601 timeval_sub (&delta_wall_time
,
602 &now_wall_time
, &start_stats
->start_wall_time
);
604 /* Subtract time spend in prompt_for_continue from walltime. */
605 timeval_sub (&delta_wall_time
,
606 &delta_wall_time
, &prompt_for_continue_wait_time
);
608 printf_unfiltered (msg_type
== 0
609 ? _("Startup time: %ld.%06ld (cpu), %ld.%06ld (wall)\n")
610 : _("Command execution time: %ld.%06ld (cpu), %ld.%06ld (wall)\n"),
611 cmd_time
/ 1000000, cmd_time
% 1000000,
612 (long) delta_wall_time
.tv_sec
,
613 (long) delta_wall_time
.tv_usec
);
619 char *lim
= (char *) sbrk (0);
621 long space_now
= lim
- lim_at_start
;
622 long space_diff
= space_now
- start_stats
->start_space
;
624 printf_unfiltered (msg_type
== 0
625 ? _("Space used: %ld (%s%ld during startup)\n")
626 : _("Space used: %ld (%s%ld for this command)\n"),
628 (space_diff
>= 0 ? "+" : ""),
634 /* Create a cleanup that reports time and space used since its
635 creation. Precise messages depend on MSG_TYPE:
636 0: Initial time/space
637 1: Individual command time/space. */
639 make_command_stats_cleanup (int msg_type
)
641 static const struct timeval zero_timeval
= { 0 };
642 struct cmd_stats
*new_stat
= XMALLOC (struct cmd_stats
);
645 char *lim
= (char *) sbrk (0);
646 new_stat
->start_space
= lim
- lim_at_start
;
649 new_stat
->msg_type
= msg_type
;
650 new_stat
->start_cpu_time
= get_run_time ();
651 gettimeofday (&new_stat
->start_wall_time
, NULL
);
653 /* Initalize timer to keep track of how long we waited for the user. */
654 prompt_for_continue_wait_time
= zero_timeval
;
656 return make_cleanup_dtor (report_command_stats
, new_stat
, xfree
);
661 /* Print a warning message. The first argument STRING is the warning
662 message, used as an fprintf format string, the second is the
663 va_list of arguments for that string. A warning is unfiltered (not
664 paginated) so that the user does not need to page through each
665 screen full of warnings when there are lots of them. */
668 vwarning (const char *string
, va_list args
)
670 if (deprecated_warning_hook
)
671 (*deprecated_warning_hook
) (string
, args
);
674 target_terminal_ours ();
675 wrap_here (""); /* Force out any buffered output. */
676 gdb_flush (gdb_stdout
);
677 if (warning_pre_print
)
678 fputs_unfiltered (warning_pre_print
, gdb_stderr
);
679 vfprintf_unfiltered (gdb_stderr
, string
, args
);
680 fprintf_unfiltered (gdb_stderr
, "\n");
685 /* Print a warning message.
686 The first argument STRING is the warning message, used as a fprintf string,
687 and the remaining args are passed as arguments to it.
688 The primary difference between warnings and errors is that a warning
689 does not force the return to command level. */
692 warning (const char *string
, ...)
696 va_start (args
, string
);
697 vwarning (string
, args
);
701 /* Print an error message and return to command level.
702 The first argument STRING is the error message, used as a fprintf string,
703 and the remaining args are passed as arguments to it. */
706 verror (const char *string
, va_list args
)
708 throw_verror (GENERIC_ERROR
, string
, args
);
712 error (const char *string
, ...)
716 va_start (args
, string
);
717 throw_verror (GENERIC_ERROR
, string
, args
);
721 /* Print an error message and quit.
722 The first argument STRING is the error message, used as a fprintf string,
723 and the remaining args are passed as arguments to it. */
726 vfatal (const char *string
, va_list args
)
728 throw_vfatal (string
, args
);
732 fatal (const char *string
, ...)
736 va_start (args
, string
);
737 throw_vfatal (string
, args
);
742 error_stream (struct ui_file
*stream
)
744 char *message
= ui_file_xstrdup (stream
, NULL
);
746 make_cleanup (xfree
, message
);
747 error (("%s"), message
);
750 /* Dump core trying to increase the core soft limit to hard limit first. */
755 #ifdef HAVE_SETRLIMIT
756 struct rlimit rlim
= { RLIM_INFINITY
, RLIM_INFINITY
};
758 setrlimit (RLIMIT_CORE
, &rlim
);
759 #endif /* HAVE_SETRLIMIT */
761 abort (); /* NOTE: GDB has only three calls to abort(). */
764 /* Check whether GDB will be able to dump core using the dump_core
768 can_dump_core (const char *reason
)
770 #ifdef HAVE_GETRLIMIT
773 /* Be quiet and assume we can dump if an error is returned. */
774 if (getrlimit (RLIMIT_CORE
, &rlim
) != 0)
777 if (rlim
.rlim_max
== 0)
779 fprintf_unfiltered (gdb_stderr
,
780 _("%s\nUnable to dump core, use `ulimit -c"
781 " unlimited' before executing GDB next time.\n"),
785 #endif /* HAVE_GETRLIMIT */
790 /* Allow the user to configure the debugger behavior with respect to
791 what to do when an internal problem is detected. */
793 const char internal_problem_ask
[] = "ask";
794 const char internal_problem_yes
[] = "yes";
795 const char internal_problem_no
[] = "no";
796 static const char *const internal_problem_modes
[] =
798 internal_problem_ask
,
799 internal_problem_yes
,
804 /* Print a message reporting an internal error/warning. Ask the user
805 if they want to continue, dump core, or just exit. Return
806 something to indicate a quit. */
808 struct internal_problem
811 const char *should_quit
;
812 const char *should_dump_core
;
815 /* Report a problem, internal to GDB, to the user. Once the problem
816 has been reported, and assuming GDB didn't quit, the caller can
817 either allow execution to resume or throw an error. */
819 static void ATTRIBUTE_PRINTF (4, 0)
820 internal_vproblem (struct internal_problem
*problem
,
821 const char *file
, int line
, const char *fmt
, va_list ap
)
828 /* Don't allow infinite error/warning recursion. */
830 static char msg
[] = "Recursive internal problem.\n";
839 fputs_unfiltered (msg
, gdb_stderr
);
840 abort (); /* NOTE: GDB has only three calls to abort(). */
843 /* Newer GLIBC versions put the warn_unused_result attribute
844 on write, but this is one of those rare cases where
845 ignoring the return value is correct. Casting to (void)
846 does not fix this problem. This is the solution suggested
847 at http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25509. */
848 if (write (STDERR_FILENO
, msg
, sizeof (msg
)) != sizeof (msg
))
849 abort (); /* NOTE: GDB has only three calls to abort(). */
854 /* Try to get the message out and at the start of a new line. */
855 target_terminal_ours ();
858 /* Create a string containing the full error/warning message. Need
859 to call query with this full string, as otherwize the reason
860 (error/warning) and question become separated. Format using a
861 style similar to a compiler error message. Include extra detail
862 so that the user knows that they are living on the edge. */
866 msg
= xstrvprintf (fmt
, ap
);
867 reason
= xstrprintf ("%s:%d: %s: %s\n"
868 "A problem internal to GDB has been detected,\n"
869 "further debugging may prove unreliable.",
870 file
, line
, problem
->name
, msg
);
872 make_cleanup (xfree
, reason
);
875 if (problem
->should_quit
== internal_problem_ask
)
877 /* Default (yes/batch case) is to quit GDB. When in batch mode
878 this lessens the likelihood of GDB going into an infinite
882 /* Emit the message and quit. */
883 fputs_unfiltered (reason
, gdb_stderr
);
884 fputs_unfiltered ("\n", gdb_stderr
);
888 quit_p
= query (_("%s\nQuit this debugging session? "), reason
);
890 else if (problem
->should_quit
== internal_problem_yes
)
892 else if (problem
->should_quit
== internal_problem_no
)
895 internal_error (__FILE__
, __LINE__
, _("bad switch"));
897 if (problem
->should_dump_core
== internal_problem_ask
)
899 if (!can_dump_core (reason
))
903 /* Default (yes/batch case) is to dump core. This leaves a GDB
904 `dropping' so that it is easier to see that something went
906 dump_core_p
= query (_("%s\nCreate a core file of GDB? "), reason
);
909 else if (problem
->should_dump_core
== internal_problem_yes
)
910 dump_core_p
= can_dump_core (reason
);
911 else if (problem
->should_dump_core
== internal_problem_no
)
914 internal_error (__FILE__
, __LINE__
, _("bad switch"));
927 #ifdef HAVE_WORKING_FORK
937 static struct internal_problem internal_error_problem
= {
938 "internal-error", internal_problem_ask
, internal_problem_ask
942 internal_verror (const char *file
, int line
, const char *fmt
, va_list ap
)
944 internal_vproblem (&internal_error_problem
, file
, line
, fmt
, ap
);
945 deprecated_throw_reason (RETURN_ERROR
);
949 internal_error (const char *file
, int line
, const char *string
, ...)
953 va_start (ap
, string
);
954 internal_verror (file
, line
, string
, ap
);
958 static struct internal_problem internal_warning_problem
= {
959 "internal-warning", internal_problem_ask
, internal_problem_ask
963 internal_vwarning (const char *file
, int line
, const char *fmt
, va_list ap
)
965 internal_vproblem (&internal_warning_problem
, file
, line
, fmt
, ap
);
969 internal_warning (const char *file
, int line
, const char *string
, ...)
973 va_start (ap
, string
);
974 internal_vwarning (file
, line
, string
, ap
);
978 /* Dummy functions to keep add_prefix_cmd happy. */
981 set_internal_problem_cmd (char *args
, int from_tty
)
986 show_internal_problem_cmd (char *args
, int from_tty
)
990 /* When GDB reports an internal problem (error or warning) it gives
991 the user the opportunity to quit GDB and/or create a core file of
992 the current debug session. This function registers a few commands
993 that make it possible to specify that GDB should always or never
994 quit or create a core file, without asking. The commands look
997 maint set PROBLEM-NAME quit ask|yes|no
998 maint show PROBLEM-NAME quit
999 maint set PROBLEM-NAME corefile ask|yes|no
1000 maint show PROBLEM-NAME corefile
1002 Where PROBLEM-NAME is currently "internal-error" or
1003 "internal-warning". */
1006 add_internal_problem_command (struct internal_problem
*problem
)
1008 struct cmd_list_element
**set_cmd_list
;
1009 struct cmd_list_element
**show_cmd_list
;
1013 set_cmd_list
= xmalloc (sizeof (*set_cmd_list
));
1014 show_cmd_list
= xmalloc (sizeof (*set_cmd_list
));
1015 *set_cmd_list
= NULL
;
1016 *show_cmd_list
= NULL
;
1018 set_doc
= xstrprintf (_("Configure what GDB does when %s is detected."),
1021 show_doc
= xstrprintf (_("Show what GDB does when %s is detected."),
1024 add_prefix_cmd ((char*) problem
->name
,
1025 class_maintenance
, set_internal_problem_cmd
, set_doc
,
1027 concat ("maintenance set ", problem
->name
, " ",
1029 0/*allow-unknown*/, &maintenance_set_cmdlist
);
1031 add_prefix_cmd ((char*) problem
->name
,
1032 class_maintenance
, show_internal_problem_cmd
, show_doc
,
1034 concat ("maintenance show ", problem
->name
, " ",
1036 0/*allow-unknown*/, &maintenance_show_cmdlist
);
1038 set_doc
= xstrprintf (_("Set whether GDB should quit "
1039 "when an %s is detected"),
1041 show_doc
= xstrprintf (_("Show whether GDB will quit "
1042 "when an %s is detected"),
1044 add_setshow_enum_cmd ("quit", class_maintenance
,
1045 internal_problem_modes
,
1046 &problem
->should_quit
,
1049 NULL
, /* help_doc */
1051 NULL
, /* showfunc */
1058 set_doc
= xstrprintf (_("Set whether GDB should create a core "
1059 "file of GDB when %s is detected"),
1061 show_doc
= xstrprintf (_("Show whether GDB will create a core "
1062 "file of GDB when %s is detected"),
1064 add_setshow_enum_cmd ("corefile", class_maintenance
,
1065 internal_problem_modes
,
1066 &problem
->should_dump_core
,
1069 NULL
, /* help_doc */
1071 NULL
, /* showfunc */
1079 /* Print the system error message for errno, and also mention STRING
1080 as the file name for which the error was encountered.
1081 Then return to command level. */
1084 perror_with_name (const char *string
)
1089 err
= safe_strerror (errno
);
1090 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
1091 strcpy (combined
, string
);
1092 strcat (combined
, ": ");
1093 strcat (combined
, err
);
1095 /* I understand setting these is a matter of taste. Still, some people
1096 may clear errno but not know about bfd_error. Doing this here is not
1098 bfd_set_error (bfd_error_no_error
);
1101 error (_("%s."), combined
);
1104 /* Print the system error message for ERRCODE, and also mention STRING
1105 as the file name for which the error was encountered. */
1108 print_sys_errmsg (const char *string
, int errcode
)
1113 err
= safe_strerror (errcode
);
1114 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
1115 strcpy (combined
, string
);
1116 strcat (combined
, ": ");
1117 strcat (combined
, err
);
1119 /* We want anything which was printed on stdout to come out first, before
1121 gdb_flush (gdb_stdout
);
1122 fprintf_unfiltered (gdb_stderr
, "%s.\n", combined
);
1125 /* Control C eventually causes this to be called, at a convenient time. */
1131 /* No steenking SIGINT will ever be coming our way when the
1132 program is resumed. Don't lie. */
1136 /* If there is no terminal switching for this target, then we can't
1137 possibly get screwed by the lack of job control. */
1138 || current_target
.to_terminal_ours
== NULL
)
1141 fatal ("Quit (expect signal SIGINT when the program is resumed)");
1146 /* Called when a memory allocation fails, with the number of bytes of
1147 memory requested in SIZE. */
1150 malloc_failure (long size
)
1154 internal_error (__FILE__
, __LINE__
,
1155 _("virtual memory exhausted: can't allocate %ld bytes."),
1160 internal_error (__FILE__
, __LINE__
, _("virtual memory exhausted."));
1164 /* My replacement for the read system call.
1165 Used like `read' but keeps going if `read' returns too soon. */
1168 myread (int desc
, char *addr
, int len
)
1175 val
= read (desc
, addr
, len
);
1179 return orglen
- len
;
1187 print_spaces (int n
, struct ui_file
*file
)
1189 fputs_unfiltered (n_spaces (n
), file
);
1192 /* Print a host address. */
1195 gdb_print_host_address (const void *addr
, struct ui_file
*stream
)
1197 fprintf_filtered (stream
, "%s", host_address_to_string (addr
));
1201 /* A cleanup function that calls regfree. */
1204 do_regfree_cleanup (void *r
)
1209 /* Create a new cleanup that frees the compiled regular expression R. */
1212 make_regfree_cleanup (regex_t
*r
)
1214 return make_cleanup (do_regfree_cleanup
, r
);
1217 /* Return an xmalloc'd error message resulting from a regular
1218 expression compilation failure. */
1221 get_regcomp_error (int code
, regex_t
*rx
)
1223 size_t length
= regerror (code
, rx
, NULL
, 0);
1224 char *result
= xmalloc (length
);
1226 regerror (code
, rx
, result
, length
);
1232 /* This function supports the query, nquery, and yquery functions.
1233 Ask user a y-or-n question and return 0 if answer is no, 1 if
1234 answer is yes, or default the answer to the specified default
1235 (for yquery or nquery). DEFCHAR may be 'y' or 'n' to provide a
1236 default answer, or '\0' for no default.
1237 CTLSTR is the control string and should end in "? ". It should
1238 not say how to answer, because we do that.
1239 ARGS are the arguments passed along with the CTLSTR argument to
1242 static int ATTRIBUTE_PRINTF (1, 0)
1243 defaulted_query (const char *ctlstr
, const char defchar
, va_list args
)
1249 char def_answer
, not_def_answer
;
1250 char *y_string
, *n_string
, *question
;
1251 /* Used to add duration we waited for user to respond to
1252 prompt_for_continue_wait_time. */
1253 struct timeval prompt_started
, prompt_ended
, prompt_delta
;
1255 /* Set up according to which answer is the default. */
1256 if (defchar
== '\0')
1260 not_def_answer
= 'N';
1264 else if (defchar
== 'y')
1268 not_def_answer
= 'N';
1276 not_def_answer
= 'Y';
1281 /* Automatically answer the default value if the user did not want
1282 prompts or the command was issued with the server prefix. */
1283 if (!confirm
|| server_command
)
1286 /* If input isn't coming from the user directly, just say what
1287 question we're asking, and then answer the default automatically. This
1288 way, important error messages don't get lost when talking to GDB
1290 if (! input_from_terminal_p ())
1293 vfprintf_filtered (gdb_stdout
, ctlstr
, args
);
1295 printf_filtered (_("(%s or %s) [answered %c; "
1296 "input not from terminal]\n"),
1297 y_string
, n_string
, def_answer
);
1298 gdb_flush (gdb_stdout
);
1303 if (deprecated_query_hook
)
1305 return deprecated_query_hook (ctlstr
, args
);
1308 /* Format the question outside of the loop, to avoid reusing args. */
1309 question
= xstrvprintf (ctlstr
, args
);
1311 /* Used for calculating time spend waiting for user. */
1312 gettimeofday (&prompt_started
, NULL
);
1316 wrap_here (""); /* Flush any buffered output. */
1317 gdb_flush (gdb_stdout
);
1319 if (annotation_level
> 1)
1320 printf_filtered (("\n\032\032pre-query\n"));
1322 fputs_filtered (question
, gdb_stdout
);
1323 printf_filtered (_("(%s or %s) "), y_string
, n_string
);
1325 if (annotation_level
> 1)
1326 printf_filtered (("\n\032\032query\n"));
1329 gdb_flush (gdb_stdout
);
1331 answer
= fgetc (stdin
);
1333 /* We expect fgetc to block until a character is read. But
1334 this may not be the case if the terminal was opened with
1335 the NONBLOCK flag. In that case, if there is nothing to
1336 read on stdin, fgetc returns EOF, but also sets the error
1337 condition flag on stdin and errno to EAGAIN. With a true
1338 EOF, stdin's error condition flag is not set.
1340 A situation where this behavior was observed is a pseudo
1342 while (answer
== EOF
&& ferror (stdin
) && errno
== EAGAIN
)
1344 /* Not a real EOF. Wait a little while and try again until
1345 we read something. */
1348 answer
= fgetc (stdin
);
1351 clearerr (stdin
); /* in case of C-d */
1352 if (answer
== EOF
) /* C-d */
1354 printf_filtered ("EOF [assumed %c]\n", def_answer
);
1358 /* Eat rest of input line, to EOF or newline. */
1362 ans2
= fgetc (stdin
);
1365 while (ans2
!= EOF
&& ans2
!= '\n' && ans2
!= '\r');
1369 /* Check answer. For the non-default, the user must specify
1370 the non-default explicitly. */
1371 if (answer
== not_def_answer
)
1373 retval
= !def_value
;
1376 /* Otherwise, if a default was specified, the user may either
1377 specify the required input or have it default by entering
1379 if (answer
== def_answer
1380 || (defchar
!= '\0' &&
1381 (answer
== '\n' || answer
== '\r' || answer
== EOF
)))
1386 /* Invalid entries are not defaulted and require another selection. */
1387 printf_filtered (_("Please answer %s or %s.\n"),
1388 y_string
, n_string
);
1391 /* Add time spend in this routine to prompt_for_continue_wait_time. */
1392 gettimeofday (&prompt_ended
, NULL
);
1393 timeval_sub (&prompt_delta
, &prompt_ended
, &prompt_started
);
1394 timeval_add (&prompt_for_continue_wait_time
,
1395 &prompt_for_continue_wait_time
, &prompt_delta
);
1398 if (annotation_level
> 1)
1399 printf_filtered (("\n\032\032post-query\n"));
1404 /* Ask user a y-or-n question and return 0 if answer is no, 1 if
1405 answer is yes, or 0 if answer is defaulted.
1406 Takes three args which are given to printf to print the question.
1407 The first, a control string, should end in "? ".
1408 It should not say how to answer, because we do that. */
1411 nquery (const char *ctlstr
, ...)
1416 va_start (args
, ctlstr
);
1417 ret
= defaulted_query (ctlstr
, 'n', args
);
1422 /* Ask user a y-or-n question and return 0 if answer is no, 1 if
1423 answer is yes, or 1 if answer is defaulted.
1424 Takes three args which are given to printf to print the question.
1425 The first, a control string, should end in "? ".
1426 It should not say how to answer, because we do that. */
1429 yquery (const char *ctlstr
, ...)
1434 va_start (args
, ctlstr
);
1435 ret
= defaulted_query (ctlstr
, 'y', args
);
1440 /* Ask user a y-or-n question and return 1 iff answer is yes.
1441 Takes three args which are given to printf to print the question.
1442 The first, a control string, should end in "? ".
1443 It should not say how to answer, because we do that. */
1446 query (const char *ctlstr
, ...)
1451 va_start (args
, ctlstr
);
1452 ret
= defaulted_query (ctlstr
, '\0', args
);
1457 /* A helper for parse_escape that converts a host character to a
1458 target character. C is the host character. If conversion is
1459 possible, then the target character is stored in *TARGET_C and the
1460 function returns 1. Otherwise, the function returns 0. */
1463 host_char_to_target (struct gdbarch
*gdbarch
, int c
, int *target_c
)
1465 struct obstack host_data
;
1467 struct cleanup
*cleanups
;
1470 obstack_init (&host_data
);
1471 cleanups
= make_cleanup_obstack_free (&host_data
);
1473 convert_between_encodings (target_charset (gdbarch
), host_charset (),
1474 &the_char
, 1, 1, &host_data
, translit_none
);
1476 if (obstack_object_size (&host_data
) == 1)
1479 *target_c
= *(char *) obstack_base (&host_data
);
1482 do_cleanups (cleanups
);
1486 /* Parse a C escape sequence. STRING_PTR points to a variable
1487 containing a pointer to the string to parse. That pointer
1488 should point to the character after the \. That pointer
1489 is updated past the characters we use. The value of the
1490 escape sequence is returned.
1492 A negative value means the sequence \ newline was seen,
1493 which is supposed to be equivalent to nothing at all.
1495 If \ is followed by a null character, we return a negative
1496 value and leave the string pointer pointing at the null character.
1498 If \ is followed by 000, we return 0 and leave the string pointer
1499 after the zeros. A value of 0 does not mean end of string. */
1502 parse_escape (struct gdbarch
*gdbarch
, char **string_ptr
)
1504 int target_char
= -2; /* Initialize to avoid GCC warnings. */
1505 int c
= *(*string_ptr
)++;
1524 int i
= host_hex_value (c
);
1529 if (isdigit (c
) && c
!= '8' && c
!= '9')
1533 i
+= host_hex_value (c
);
1569 if (!host_char_to_target (gdbarch
, c
, &target_char
))
1570 error (_("The escape sequence `\\%c' is equivalent to plain `%c',"
1571 " which has no equivalent\nin the `%s' character set."),
1572 c
, c
, target_charset (gdbarch
));
1576 /* Print the character C on STREAM as part of the contents of a literal
1577 string whose delimiter is QUOTER. Note that this routine should only
1578 be call for printing things which are independent of the language
1579 of the program being debugged. */
1582 printchar (int c
, void (*do_fputs
) (const char *, struct ui_file
*),
1583 void (*do_fprintf
) (struct ui_file
*, const char *, ...)
1584 ATTRIBUTE_FPTR_PRINTF_2
, struct ui_file
*stream
, int quoter
)
1586 c
&= 0xFF; /* Avoid sign bit follies */
1588 if (c
< 0x20 || /* Low control chars */
1589 (c
>= 0x7F && c
< 0xA0) || /* DEL, High controls */
1590 (sevenbit_strings
&& c
>= 0x80))
1591 { /* high order bit set */
1595 do_fputs ("\\n", stream
);
1598 do_fputs ("\\b", stream
);
1601 do_fputs ("\\t", stream
);
1604 do_fputs ("\\f", stream
);
1607 do_fputs ("\\r", stream
);
1610 do_fputs ("\\e", stream
);
1613 do_fputs ("\\a", stream
);
1616 do_fprintf (stream
, "\\%.3o", (unsigned int) c
);
1622 if (c
== '\\' || c
== quoter
)
1623 do_fputs ("\\", stream
);
1624 do_fprintf (stream
, "%c", c
);
1628 /* Print the character C on STREAM as part of the contents of a
1629 literal string whose delimiter is QUOTER. Note that these routines
1630 should only be call for printing things which are independent of
1631 the language of the program being debugged. */
1634 fputstr_filtered (const char *str
, int quoter
, struct ui_file
*stream
)
1637 printchar (*str
++, fputs_filtered
, fprintf_filtered
, stream
, quoter
);
1641 fputstr_unfiltered (const char *str
, int quoter
, struct ui_file
*stream
)
1644 printchar (*str
++, fputs_unfiltered
, fprintf_unfiltered
, stream
, quoter
);
1648 fputstrn_filtered (const char *str
, int n
, int quoter
,
1649 struct ui_file
*stream
)
1653 for (i
= 0; i
< n
; i
++)
1654 printchar (str
[i
], fputs_filtered
, fprintf_filtered
, stream
, quoter
);
1658 fputstrn_unfiltered (const char *str
, int n
, int quoter
,
1659 struct ui_file
*stream
)
1663 for (i
= 0; i
< n
; i
++)
1664 printchar (str
[i
], fputs_unfiltered
, fprintf_unfiltered
, stream
, quoter
);
1668 /* Number of lines per page or UINT_MAX if paging is disabled. */
1669 static unsigned int lines_per_page
;
1671 show_lines_per_page (struct ui_file
*file
, int from_tty
,
1672 struct cmd_list_element
*c
, const char *value
)
1674 fprintf_filtered (file
,
1675 _("Number of lines gdb thinks are in a page is %s.\n"),
1679 /* Number of chars per line or UINT_MAX if line folding is disabled. */
1680 static unsigned int chars_per_line
;
1682 show_chars_per_line (struct ui_file
*file
, int from_tty
,
1683 struct cmd_list_element
*c
, const char *value
)
1685 fprintf_filtered (file
,
1686 _("Number of characters gdb thinks "
1687 "are in a line is %s.\n"),
1691 /* Current count of lines printed on this page, chars on this line. */
1692 static unsigned int lines_printed
, chars_printed
;
1694 /* Buffer and start column of buffered text, for doing smarter word-
1695 wrapping. When someone calls wrap_here(), we start buffering output
1696 that comes through fputs_filtered(). If we see a newline, we just
1697 spit it out and forget about the wrap_here(). If we see another
1698 wrap_here(), we spit it out and remember the newer one. If we see
1699 the end of the line, we spit out a newline, the indent, and then
1700 the buffered output. */
1702 /* Malloc'd buffer with chars_per_line+2 bytes. Contains characters which
1703 are waiting to be output (they have already been counted in chars_printed).
1704 When wrap_buffer[0] is null, the buffer is empty. */
1705 static char *wrap_buffer
;
1707 /* Pointer in wrap_buffer to the next character to fill. */
1708 static char *wrap_pointer
;
1710 /* String to indent by if the wrap occurs. Must not be NULL if wrap_column
1712 static char *wrap_indent
;
1714 /* Column number on the screen where wrap_buffer begins, or 0 if wrapping
1715 is not in effect. */
1716 static int wrap_column
;
1719 /* Inialize the number of lines per page and chars per line. */
1722 init_page_info (void)
1726 lines_per_page
= UINT_MAX
;
1727 chars_per_line
= UINT_MAX
;
1731 if (!tui_get_command_dimension (&chars_per_line
, &lines_per_page
))
1736 #if defined(__GO32__)
1737 rows
= ScreenRows ();
1738 cols
= ScreenCols ();
1739 lines_per_page
= rows
;
1740 chars_per_line
= cols
;
1742 /* Make sure Readline has initialized its terminal settings. */
1743 rl_reset_terminal (NULL
);
1745 /* Get the screen size from Readline. */
1746 rl_get_screen_size (&rows
, &cols
);
1747 lines_per_page
= rows
;
1748 chars_per_line
= cols
;
1750 /* Readline should have fetched the termcap entry for us. */
1751 if (tgetnum ("li") < 0 || getenv ("EMACS"))
1753 /* The number of lines per page is not mentioned in the
1754 terminal description. This probably means that paging is
1755 not useful (e.g. emacs shell window), so disable paging. */
1756 lines_per_page
= UINT_MAX
;
1759 /* If the output is not a terminal, don't paginate it. */
1760 if (!ui_file_isatty (gdb_stdout
))
1761 lines_per_page
= UINT_MAX
;
1769 /* Helper for make_cleanup_restore_page_info. */
1772 do_restore_page_info_cleanup (void *arg
)
1778 /* Provide cleanup for restoring the terminal size. */
1781 make_cleanup_restore_page_info (void)
1783 struct cleanup
*back_to
;
1785 back_to
= make_cleanup (do_restore_page_info_cleanup
, NULL
);
1786 make_cleanup_restore_uinteger (&lines_per_page
);
1787 make_cleanup_restore_uinteger (&chars_per_line
);
1792 /* Temporarily set BATCH_FLAG and the associated unlimited terminal size.
1793 Provide cleanup for restoring the original state. */
1796 set_batch_flag_and_make_cleanup_restore_page_info (void)
1798 struct cleanup
*back_to
= make_cleanup_restore_page_info ();
1800 make_cleanup_restore_integer (&batch_flag
);
1807 /* Set the screen size based on LINES_PER_PAGE and CHARS_PER_LINE. */
1810 set_screen_size (void)
1812 int rows
= lines_per_page
;
1813 int cols
= chars_per_line
;
1821 /* Update Readline's idea of the terminal size. */
1822 rl_set_screen_size (rows
, cols
);
1825 /* Reinitialize WRAP_BUFFER according to the current value of
1831 if (chars_per_line
== 0)
1836 wrap_buffer
= (char *) xmalloc (chars_per_line
+ 2);
1837 wrap_buffer
[0] = '\0';
1840 wrap_buffer
= (char *) xrealloc (wrap_buffer
, chars_per_line
+ 2);
1841 wrap_pointer
= wrap_buffer
; /* Start it at the beginning. */
1845 set_width_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
1852 set_height_command (char *args
, int from_tty
, struct cmd_list_element
*c
)
1857 /* Wait, so the user can read what's on the screen. Prompt the user
1858 to continue by pressing RETURN. */
1861 prompt_for_continue (void)
1864 char cont_prompt
[120];
1865 /* Used to add duration we waited for user to respond to
1866 prompt_for_continue_wait_time. */
1867 struct timeval prompt_started
, prompt_ended
, prompt_delta
;
1869 gettimeofday (&prompt_started
, NULL
);
1871 if (annotation_level
> 1)
1872 printf_unfiltered (("\n\032\032pre-prompt-for-continue\n"));
1874 strcpy (cont_prompt
,
1875 "---Type <return> to continue, or q <return> to quit---");
1876 if (annotation_level
> 1)
1877 strcat (cont_prompt
, "\n\032\032prompt-for-continue\n");
1879 /* We must do this *before* we call gdb_readline, else it will eventually
1880 call us -- thinking that we're trying to print beyond the end of the
1882 reinitialize_more_filter ();
1886 /* On a real operating system, the user can quit with SIGINT.
1889 'q' is provided on all systems so users don't have to change habits
1890 from system to system, and because telling them what to do in
1891 the prompt is more user-friendly than expecting them to think of
1893 /* Call readline, not gdb_readline, because GO32 readline handles control-C
1894 whereas control-C to gdb_readline will cause the user to get dumped
1896 ignore
= gdb_readline_wrapper (cont_prompt
);
1898 /* Add time spend in this routine to prompt_for_continue_wait_time. */
1899 gettimeofday (&prompt_ended
, NULL
);
1900 timeval_sub (&prompt_delta
, &prompt_ended
, &prompt_started
);
1901 timeval_add (&prompt_for_continue_wait_time
,
1902 &prompt_for_continue_wait_time
, &prompt_delta
);
1904 if (annotation_level
> 1)
1905 printf_unfiltered (("\n\032\032post-prompt-for-continue\n"));
1911 while (*p
== ' ' || *p
== '\t')
1919 /* Now we have to do this again, so that GDB will know that it doesn't
1920 need to save the ---Type <return>--- line at the top of the screen. */
1921 reinitialize_more_filter ();
1923 dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */
1926 /* Reinitialize filter; ie. tell it to reset to original values. */
1929 reinitialize_more_filter (void)
1935 /* Indicate that if the next sequence of characters overflows the line,
1936 a newline should be inserted here rather than when it hits the end.
1937 If INDENT is non-null, it is a string to be printed to indent the
1938 wrapped part on the next line. INDENT must remain accessible until
1939 the next call to wrap_here() or until a newline is printed through
1942 If the line is already overfull, we immediately print a newline and
1943 the indentation, and disable further wrapping.
1945 If we don't know the width of lines, but we know the page height,
1946 we must not wrap words, but should still keep track of newlines
1947 that were explicitly printed.
1949 INDENT should not contain tabs, as that will mess up the char count
1950 on the next line. FIXME.
1952 This routine is guaranteed to force out any output which has been
1953 squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be
1954 used to force out output from the wrap_buffer. */
1957 wrap_here (char *indent
)
1959 /* This should have been allocated, but be paranoid anyway. */
1961 internal_error (__FILE__
, __LINE__
,
1962 _("failed internal consistency check"));
1966 *wrap_pointer
= '\0';
1967 fputs_unfiltered (wrap_buffer
, gdb_stdout
);
1969 wrap_pointer
= wrap_buffer
;
1970 wrap_buffer
[0] = '\0';
1971 if (chars_per_line
== UINT_MAX
) /* No line overflow checking. */
1975 else if (chars_printed
>= chars_per_line
)
1977 puts_filtered ("\n");
1979 puts_filtered (indent
);
1984 wrap_column
= chars_printed
;
1988 wrap_indent
= indent
;
1992 /* Print input string to gdb_stdout, filtered, with wrap,
1993 arranging strings in columns of n chars. String can be
1994 right or left justified in the column. Never prints
1995 trailing spaces. String should never be longer than
1996 width. FIXME: this could be useful for the EXAMINE
1997 command, which currently doesn't tabulate very well. */
2000 puts_filtered_tabular (char *string
, int width
, int right
)
2006 gdb_assert (chars_per_line
> 0);
2007 if (chars_per_line
== UINT_MAX
)
2009 fputs_filtered (string
, gdb_stdout
);
2010 fputs_filtered ("\n", gdb_stdout
);
2014 if (((chars_printed
- 1) / width
+ 2) * width
>= chars_per_line
)
2015 fputs_filtered ("\n", gdb_stdout
);
2017 if (width
>= chars_per_line
)
2018 width
= chars_per_line
- 1;
2020 stringlen
= strlen (string
);
2022 if (chars_printed
> 0)
2023 spaces
= width
- (chars_printed
- 1) % width
- 1;
2025 spaces
+= width
- stringlen
;
2027 spacebuf
= alloca (spaces
+ 1);
2028 spacebuf
[spaces
] = '\0';
2030 spacebuf
[spaces
] = ' ';
2032 fputs_filtered (spacebuf
, gdb_stdout
);
2033 fputs_filtered (string
, gdb_stdout
);
2037 /* Ensure that whatever gets printed next, using the filtered output
2038 commands, starts at the beginning of the line. I.e. if there is
2039 any pending output for the current line, flush it and start a new
2040 line. Otherwise do nothing. */
2045 if (chars_printed
> 0)
2047 puts_filtered ("\n");
2052 /* Like fputs but if FILTER is true, pause after every screenful.
2054 Regardless of FILTER can wrap at points other than the final
2055 character of a line.
2057 Unlike fputs, fputs_maybe_filtered does not return a value.
2058 It is OK for LINEBUFFER to be NULL, in which case just don't print
2061 Note that a longjmp to top level may occur in this routine (only if
2062 FILTER is true) (since prompt_for_continue may do so) so this
2063 routine should not be called when cleanups are not in place. */
2066 fputs_maybe_filtered (const char *linebuffer
, struct ui_file
*stream
,
2069 const char *lineptr
;
2071 if (linebuffer
== 0)
2074 /* Don't do any filtering if it is disabled. */
2075 if (stream
!= gdb_stdout
2076 || !pagination_enabled
2078 || (lines_per_page
== UINT_MAX
&& chars_per_line
== UINT_MAX
)
2079 || top_level_interpreter () == NULL
2080 || ui_out_is_mi_like_p (interp_ui_out (top_level_interpreter ())))
2082 fputs_unfiltered (linebuffer
, stream
);
2086 /* Go through and output each character. Show line extension
2087 when this is necessary; prompt user for new page when this is
2090 lineptr
= linebuffer
;
2093 /* Possible new page. */
2094 if (filter
&& (lines_printed
>= lines_per_page
- 1))
2095 prompt_for_continue ();
2097 while (*lineptr
&& *lineptr
!= '\n')
2099 /* Print a single line. */
2100 if (*lineptr
== '\t')
2103 *wrap_pointer
++ = '\t';
2105 fputc_unfiltered ('\t', stream
);
2106 /* Shifting right by 3 produces the number of tab stops
2107 we have already passed, and then adding one and
2108 shifting left 3 advances to the next tab stop. */
2109 chars_printed
= ((chars_printed
>> 3) + 1) << 3;
2115 *wrap_pointer
++ = *lineptr
;
2117 fputc_unfiltered (*lineptr
, stream
);
2122 if (chars_printed
>= chars_per_line
)
2124 unsigned int save_chars
= chars_printed
;
2128 /* If we aren't actually wrapping, don't output newline --
2129 if chars_per_line is right, we probably just overflowed
2130 anyway; if it's wrong, let us keep going. */
2132 fputc_unfiltered ('\n', stream
);
2134 /* Possible new page. */
2135 if (lines_printed
>= lines_per_page
- 1)
2136 prompt_for_continue ();
2138 /* Now output indentation and wrapped string. */
2141 fputs_unfiltered (wrap_indent
, stream
);
2142 *wrap_pointer
= '\0'; /* Null-terminate saved stuff, */
2143 fputs_unfiltered (wrap_buffer
, stream
); /* and eject it. */
2144 /* FIXME, this strlen is what prevents wrap_indent from
2145 containing tabs. However, if we recurse to print it
2146 and count its chars, we risk trouble if wrap_indent is
2147 longer than (the user settable) chars_per_line.
2148 Note also that this can set chars_printed > chars_per_line
2149 if we are printing a long string. */
2150 chars_printed
= strlen (wrap_indent
)
2151 + (save_chars
- wrap_column
);
2152 wrap_pointer
= wrap_buffer
; /* Reset buffer */
2153 wrap_buffer
[0] = '\0';
2154 wrap_column
= 0; /* And disable fancy wrap */
2159 if (*lineptr
== '\n')
2162 wrap_here ((char *) 0); /* Spit out chars, cancel
2165 fputc_unfiltered ('\n', stream
);
2172 fputs_filtered (const char *linebuffer
, struct ui_file
*stream
)
2174 fputs_maybe_filtered (linebuffer
, stream
, 1);
2178 putchar_unfiltered (int c
)
2182 ui_file_write (gdb_stdout
, &buf
, 1);
2186 /* Write character C to gdb_stdout using GDB's paging mechanism and return C.
2187 May return nonlocally. */
2190 putchar_filtered (int c
)
2192 return fputc_filtered (c
, gdb_stdout
);
2196 fputc_unfiltered (int c
, struct ui_file
*stream
)
2200 ui_file_write (stream
, &buf
, 1);
2205 fputc_filtered (int c
, struct ui_file
*stream
)
2211 fputs_filtered (buf
, stream
);
2215 /* puts_debug is like fputs_unfiltered, except it prints special
2216 characters in printable fashion. */
2219 puts_debug (char *prefix
, char *string
, char *suffix
)
2223 /* Print prefix and suffix after each line. */
2224 static int new_line
= 1;
2225 static int return_p
= 0;
2226 static char *prev_prefix
= "";
2227 static char *prev_suffix
= "";
2229 if (*string
== '\n')
2232 /* If the prefix is changing, print the previous suffix, a new line,
2233 and the new prefix. */
2234 if ((return_p
|| (strcmp (prev_prefix
, prefix
) != 0)) && !new_line
)
2236 fputs_unfiltered (prev_suffix
, gdb_stdlog
);
2237 fputs_unfiltered ("\n", gdb_stdlog
);
2238 fputs_unfiltered (prefix
, gdb_stdlog
);
2241 /* Print prefix if we printed a newline during the previous call. */
2245 fputs_unfiltered (prefix
, gdb_stdlog
);
2248 prev_prefix
= prefix
;
2249 prev_suffix
= suffix
;
2251 /* Output characters in a printable format. */
2252 while ((ch
= *string
++) != '\0')
2258 fputc_unfiltered (ch
, gdb_stdlog
);
2261 fprintf_unfiltered (gdb_stdlog
, "\\x%02x", ch
& 0xff);
2265 fputs_unfiltered ("\\\\", gdb_stdlog
);
2268 fputs_unfiltered ("\\b", gdb_stdlog
);
2271 fputs_unfiltered ("\\f", gdb_stdlog
);
2275 fputs_unfiltered ("\\n", gdb_stdlog
);
2278 fputs_unfiltered ("\\r", gdb_stdlog
);
2281 fputs_unfiltered ("\\t", gdb_stdlog
);
2284 fputs_unfiltered ("\\v", gdb_stdlog
);
2288 return_p
= ch
== '\r';
2291 /* Print suffix if we printed a newline. */
2294 fputs_unfiltered (suffix
, gdb_stdlog
);
2295 fputs_unfiltered ("\n", gdb_stdlog
);
2300 /* Print a variable number of ARGS using format FORMAT. If this
2301 information is going to put the amount written (since the last call
2302 to REINITIALIZE_MORE_FILTER or the last page break) over the page size,
2303 call prompt_for_continue to get the users permision to continue.
2305 Unlike fprintf, this function does not return a value.
2307 We implement three variants, vfprintf (takes a vararg list and stream),
2308 fprintf (takes a stream to write on), and printf (the usual).
2310 Note also that a longjmp to top level may occur in this routine
2311 (since prompt_for_continue may do so) so this routine should not be
2312 called when cleanups are not in place. */
2315 vfprintf_maybe_filtered (struct ui_file
*stream
, const char *format
,
2316 va_list args
, int filter
)
2319 struct cleanup
*old_cleanups
;
2321 linebuffer
= xstrvprintf (format
, args
);
2322 old_cleanups
= make_cleanup (xfree
, linebuffer
);
2323 fputs_maybe_filtered (linebuffer
, stream
, filter
);
2324 do_cleanups (old_cleanups
);
2329 vfprintf_filtered (struct ui_file
*stream
, const char *format
, va_list args
)
2331 vfprintf_maybe_filtered (stream
, format
, args
, 1);
2335 vfprintf_unfiltered (struct ui_file
*stream
, const char *format
, va_list args
)
2338 struct cleanup
*old_cleanups
;
2340 linebuffer
= xstrvprintf (format
, args
);
2341 old_cleanups
= make_cleanup (xfree
, linebuffer
);
2342 if (debug_timestamp
&& stream
== gdb_stdlog
)
2348 gettimeofday (&tm
, NULL
);
2350 len
= strlen (linebuffer
);
2351 need_nl
= (len
> 0 && linebuffer
[len
- 1] != '\n');
2353 timestamp
= xstrprintf ("%ld:%ld %s%s",
2354 (long) tm
.tv_sec
, (long) tm
.tv_usec
,
2356 need_nl
? "\n": "");
2357 make_cleanup (xfree
, timestamp
);
2358 fputs_unfiltered (timestamp
, stream
);
2361 fputs_unfiltered (linebuffer
, stream
);
2362 do_cleanups (old_cleanups
);
2366 vprintf_filtered (const char *format
, va_list args
)
2368 vfprintf_maybe_filtered (gdb_stdout
, format
, args
, 1);
2372 vprintf_unfiltered (const char *format
, va_list args
)
2374 vfprintf_unfiltered (gdb_stdout
, format
, args
);
2378 fprintf_filtered (struct ui_file
*stream
, const char *format
, ...)
2382 va_start (args
, format
);
2383 vfprintf_filtered (stream
, format
, args
);
2388 fprintf_unfiltered (struct ui_file
*stream
, const char *format
, ...)
2392 va_start (args
, format
);
2393 vfprintf_unfiltered (stream
, format
, args
);
2397 /* Like fprintf_filtered, but prints its result indented.
2398 Called as fprintfi_filtered (spaces, stream, format, ...); */
2401 fprintfi_filtered (int spaces
, struct ui_file
*stream
, const char *format
,
2406 va_start (args
, format
);
2407 print_spaces_filtered (spaces
, stream
);
2409 vfprintf_filtered (stream
, format
, args
);
2415 printf_filtered (const char *format
, ...)
2419 va_start (args
, format
);
2420 vfprintf_filtered (gdb_stdout
, format
, args
);
2426 printf_unfiltered (const char *format
, ...)
2430 va_start (args
, format
);
2431 vfprintf_unfiltered (gdb_stdout
, format
, args
);
2435 /* Like printf_filtered, but prints it's result indented.
2436 Called as printfi_filtered (spaces, format, ...); */
2439 printfi_filtered (int spaces
, const char *format
, ...)
2443 va_start (args
, format
);
2444 print_spaces_filtered (spaces
, gdb_stdout
);
2445 vfprintf_filtered (gdb_stdout
, format
, args
);
2449 /* Easy -- but watch out!
2451 This routine is *not* a replacement for puts()! puts() appends a newline.
2452 This one doesn't, and had better not! */
2455 puts_filtered (const char *string
)
2457 fputs_filtered (string
, gdb_stdout
);
2461 puts_unfiltered (const char *string
)
2463 fputs_unfiltered (string
, gdb_stdout
);
2466 /* Return a pointer to N spaces and a null. The pointer is good
2467 until the next call to here. */
2472 static char *spaces
= 0;
2473 static int max_spaces
= -1;
2479 spaces
= (char *) xmalloc (n
+ 1);
2480 for (t
= spaces
+ n
; t
!= spaces
;)
2486 return spaces
+ max_spaces
- n
;
2489 /* Print N spaces. */
2491 print_spaces_filtered (int n
, struct ui_file
*stream
)
2493 fputs_filtered (n_spaces (n
), stream
);
2496 /* C++/ObjC demangler stuff. */
2498 /* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language
2499 LANG, using demangling args ARG_MODE, and print it filtered to STREAM.
2500 If the name is not mangled, or the language for the name is unknown, or
2501 demangling is off, the name is printed in its "raw" form. */
2504 fprintf_symbol_filtered (struct ui_file
*stream
, const char *name
,
2505 enum language lang
, int arg_mode
)
2511 /* If user wants to see raw output, no problem. */
2514 fputs_filtered (name
, stream
);
2518 demangled
= language_demangle (language_def (lang
), name
, arg_mode
);
2519 fputs_filtered (demangled
? demangled
: name
, stream
);
2520 if (demangled
!= NULL
)
2528 /* Do a strcmp() type operation on STRING1 and STRING2, ignoring any
2529 differences in whitespace. Returns 0 if they match, non-zero if they
2530 don't (slightly different than strcmp()'s range of return values).
2532 As an extra hack, string1=="FOO(ARGS)" matches string2=="FOO".
2533 This "feature" is useful when searching for matching C++ function names
2534 (such as if the user types 'break FOO', where FOO is a mangled C++
2538 strcmp_iw (const char *string1
, const char *string2
)
2540 while ((*string1
!= '\0') && (*string2
!= '\0'))
2542 while (isspace (*string1
))
2546 while (isspace (*string2
))
2550 if (case_sensitivity
== case_sensitive_on
&& *string1
!= *string2
)
2552 if (case_sensitivity
== case_sensitive_off
2553 && (tolower ((unsigned char) *string1
)
2554 != tolower ((unsigned char) *string2
)))
2556 if (*string1
!= '\0')
2562 return (*string1
!= '\0' && *string1
!= '(') || (*string2
!= '\0');
2565 /* This is like strcmp except that it ignores whitespace and treats
2566 '(' as the first non-NULL character in terms of ordering. Like
2567 strcmp (and unlike strcmp_iw), it returns negative if STRING1 <
2568 STRING2, 0 if STRING2 = STRING2, and positive if STRING1 > STRING2
2569 according to that ordering.
2571 If a list is sorted according to this function and if you want to
2572 find names in the list that match some fixed NAME according to
2573 strcmp_iw(LIST_ELT, NAME), then the place to start looking is right
2574 where this function would put NAME.
2576 This function must be neutral to the CASE_SENSITIVITY setting as the user
2577 may choose it during later lookup. Therefore this function always sorts
2578 primarily case-insensitively and secondarily case-sensitively.
2580 Here are some examples of why using strcmp to sort is a bad idea:
2584 Say your partial symtab contains: "foo<char *>", "goo". Then, if
2585 we try to do a search for "foo<char*>", strcmp will locate this
2586 after "foo<char *>" and before "goo". Then lookup_partial_symbol
2587 will start looking at strings beginning with "goo", and will never
2588 see the correct match of "foo<char *>".
2590 Parenthesis example:
2592 In practice, this is less like to be an issue, but I'll give it a
2593 shot. Let's assume that '$' is a legitimate character to occur in
2594 symbols. (Which may well even be the case on some systems.) Then
2595 say that the partial symbol table contains "foo$" and "foo(int)".
2596 strcmp will put them in this order, since '$' < '('. Now, if the
2597 user searches for "foo", then strcmp will sort "foo" before "foo$".
2598 Then lookup_partial_symbol will notice that strcmp_iw("foo$",
2599 "foo") is false, so it won't proceed to the actual match of
2600 "foo(int)" with "foo". */
2603 strcmp_iw_ordered (const char *string1
, const char *string2
)
2605 const char *saved_string1
= string1
, *saved_string2
= string2
;
2606 enum case_sensitivity case_pass
= case_sensitive_off
;
2610 /* C1 and C2 are valid only if *string1 != '\0' && *string2 != '\0'.
2611 Provide stub characters if we are already at the end of one of the
2613 char c1
= 'X', c2
= 'X';
2615 while (*string1
!= '\0' && *string2
!= '\0')
2617 while (isspace (*string1
))
2619 while (isspace (*string2
))
2624 case case_sensitive_off
:
2625 c1
= tolower ((unsigned char) *string1
);
2626 c2
= tolower ((unsigned char) *string2
);
2628 case case_sensitive_on
:
2636 if (*string1
!= '\0')
2645 /* Characters are non-equal unless they're both '\0'; we want to
2646 make sure we get the comparison right according to our
2647 comparison in the cases where one of them is '\0' or '('. */
2649 if (*string2
== '\0')
2654 if (*string2
== '\0')
2659 if (*string2
== '\0' || *string2
== '(')
2668 if (case_pass
== case_sensitive_on
)
2671 /* Otherwise the strings were equal in case insensitive way, make
2672 a more fine grained comparison in a case sensitive way. */
2674 case_pass
= case_sensitive_on
;
2675 string1
= saved_string1
;
2676 string2
= saved_string2
;
2680 /* A simple comparison function with opposite semantics to strcmp. */
2683 streq (const char *lhs
, const char *rhs
)
2685 return !strcmp (lhs
, rhs
);
2691 ** Answer whether string_to_compare is a full or partial match to
2692 ** template_string. The partial match must be in sequence starting
2696 subset_compare (char *string_to_compare
, char *template_string
)
2700 if (template_string
!= (char *) NULL
&& string_to_compare
!= (char *) NULL
2701 && strlen (string_to_compare
) <= strlen (template_string
))
2704 (template_string
, string_to_compare
, strlen (string_to_compare
)) == 0);
2711 pagination_on_command (char *arg
, int from_tty
)
2713 pagination_enabled
= 1;
2717 pagination_off_command (char *arg
, int from_tty
)
2719 pagination_enabled
= 0;
2723 show_debug_timestamp (struct ui_file
*file
, int from_tty
,
2724 struct cmd_list_element
*c
, const char *value
)
2726 fprintf_filtered (file
, _("Timestamping debugging messages is %s.\n"),
2732 initialize_utils (void)
2734 add_setshow_uinteger_cmd ("width", class_support
, &chars_per_line
, _("\
2735 Set number of characters where GDB should wrap lines of its output."), _("\
2736 Show number of characters where GDB should wrap lines of its output."), _("\
2737 This affects where GDB wraps its output to fit the screen width.\n\
2738 Setting this to zero prevents GDB from wrapping its output."),
2740 show_chars_per_line
,
2741 &setlist
, &showlist
);
2743 add_setshow_uinteger_cmd ("height", class_support
, &lines_per_page
, _("\
2744 Set number of lines in a page for GDB output pagination."), _("\
2745 Show number of lines in a page for GDB output pagination."), _("\
2746 This affects the number of lines after which GDB will pause\n\
2747 its output and ask you whether to continue.\n\
2748 Setting this to zero causes GDB never pause during output."),
2750 show_lines_per_page
,
2751 &setlist
, &showlist
);
2755 add_setshow_boolean_cmd ("pagination", class_support
,
2756 &pagination_enabled
, _("\
2757 Set state of GDB output pagination."), _("\
2758 Show state of GDB output pagination."), _("\
2759 When pagination is ON, GDB pauses at end of each screenful of\n\
2760 its output and asks you whether to continue.\n\
2761 Turning pagination off is an alternative to \"set height 0\"."),
2763 show_pagination_enabled
,
2764 &setlist
, &showlist
);
2768 add_com ("am", class_support
, pagination_on_command
,
2769 _("Enable pagination"));
2770 add_com ("sm", class_support
, pagination_off_command
,
2771 _("Disable pagination"));
2774 add_setshow_boolean_cmd ("sevenbit-strings", class_support
,
2775 &sevenbit_strings
, _("\
2776 Set printing of 8-bit characters in strings as \\nnn."), _("\
2777 Show printing of 8-bit characters in strings as \\nnn."), NULL
,
2779 show_sevenbit_strings
,
2780 &setprintlist
, &showprintlist
);
2782 add_setshow_boolean_cmd ("timestamp", class_maintenance
,
2783 &debug_timestamp
, _("\
2784 Set timestamping of debugging messages."), _("\
2785 Show timestamping of debugging messages."), _("\
2786 When set, debugging messages will be marked with seconds and microseconds."),
2788 show_debug_timestamp
,
2789 &setdebuglist
, &showdebuglist
);
2792 /* Print routines to handle variable size regs, etc. */
2793 /* Temporary storage using circular buffer. */
2799 static char buf
[NUMCELLS
][CELLSIZE
];
2800 static int cell
= 0;
2802 if (++cell
>= NUMCELLS
)
2808 paddress (struct gdbarch
*gdbarch
, CORE_ADDR addr
)
2810 /* Truncate address to the size of a target address, avoiding shifts
2811 larger or equal than the width of a CORE_ADDR. The local
2812 variable ADDR_BIT stops the compiler reporting a shift overflow
2813 when it won't occur. */
2814 /* NOTE: This assumes that the significant address information is
2815 kept in the least significant bits of ADDR - the upper bits were
2816 either zero or sign extended. Should gdbarch_address_to_pointer or
2817 some ADDRESS_TO_PRINTABLE() be used to do the conversion? */
2819 int addr_bit
= gdbarch_addr_bit (gdbarch
);
2821 if (addr_bit
< (sizeof (CORE_ADDR
) * HOST_CHAR_BIT
))
2822 addr
&= ((CORE_ADDR
) 1 << addr_bit
) - 1;
2823 return hex_string (addr
);
2826 /* This function is described in "defs.h". */
2829 print_core_address (struct gdbarch
*gdbarch
, CORE_ADDR address
)
2831 int addr_bit
= gdbarch_addr_bit (gdbarch
);
2833 if (addr_bit
< (sizeof (CORE_ADDR
) * HOST_CHAR_BIT
))
2834 address
&= ((CORE_ADDR
) 1 << addr_bit
) - 1;
2836 /* FIXME: cagney/2002-05-03: Need local_address_string() function
2837 that returns the language localized string formatted to a width
2838 based on gdbarch_addr_bit. */
2840 return hex_string_custom (address
, 8);
2842 return hex_string_custom (address
, 16);
2845 /* Callback hash_f for htab_create_alloc or htab_create_alloc_ex. */
2848 core_addr_hash (const void *ap
)
2850 const CORE_ADDR
*addrp
= ap
;
2855 /* Callback eq_f for htab_create_alloc or htab_create_alloc_ex. */
2858 core_addr_eq (const void *ap
, const void *bp
)
2860 const CORE_ADDR
*addr_ap
= ap
;
2861 const CORE_ADDR
*addr_bp
= bp
;
2863 return *addr_ap
== *addr_bp
;
2867 decimal2str (char *sign
, ULONGEST addr
, int width
)
2869 /* Steal code from valprint.c:print_decimal(). Should this worry
2870 about the real size of addr as the above does? */
2871 unsigned long temp
[3];
2872 char *str
= get_cell ();
2877 temp
[i
] = addr
% (1000 * 1000 * 1000);
2878 addr
/= (1000 * 1000 * 1000);
2882 while (addr
!= 0 && i
< (sizeof (temp
) / sizeof (temp
[0])));
2891 xsnprintf (str
, CELLSIZE
, "%s%0*lu", sign
, width
, temp
[0]);
2894 xsnprintf (str
, CELLSIZE
, "%s%0*lu%09lu", sign
, width
,
2898 xsnprintf (str
, CELLSIZE
, "%s%0*lu%09lu%09lu", sign
, width
,
2899 temp
[2], temp
[1], temp
[0]);
2902 internal_error (__FILE__
, __LINE__
,
2903 _("failed internal consistency check"));
2910 octal2str (ULONGEST addr
, int width
)
2912 unsigned long temp
[3];
2913 char *str
= get_cell ();
2918 temp
[i
] = addr
% (0100000 * 0100000);
2919 addr
/= (0100000 * 0100000);
2923 while (addr
!= 0 && i
< (sizeof (temp
) / sizeof (temp
[0])));
2933 xsnprintf (str
, CELLSIZE
, "%*o", width
, 0);
2935 xsnprintf (str
, CELLSIZE
, "0%0*lo", width
, temp
[0]);
2938 xsnprintf (str
, CELLSIZE
, "0%0*lo%010lo", width
, temp
[1], temp
[0]);
2941 xsnprintf (str
, CELLSIZE
, "0%0*lo%010lo%010lo", width
,
2942 temp
[2], temp
[1], temp
[0]);
2945 internal_error (__FILE__
, __LINE__
,
2946 _("failed internal consistency check"));
2953 pulongest (ULONGEST u
)
2955 return decimal2str ("", u
, 0);
2959 plongest (LONGEST l
)
2962 return decimal2str ("-", -l
, 0);
2964 return decimal2str ("", l
, 0);
2967 /* Eliminate warning from compiler on 32-bit systems. */
2968 static int thirty_two
= 32;
2971 phex (ULONGEST l
, int sizeof_l
)
2979 xsnprintf (str
, CELLSIZE
, "%08lx%08lx",
2980 (unsigned long) (l
>> thirty_two
),
2981 (unsigned long) (l
& 0xffffffff));
2985 xsnprintf (str
, CELLSIZE
, "%08lx", (unsigned long) l
);
2989 xsnprintf (str
, CELLSIZE
, "%04x", (unsigned short) (l
& 0xffff));
2992 str
= phex (l
, sizeof (l
));
3000 phex_nz (ULONGEST l
, int sizeof_l
)
3008 unsigned long high
= (unsigned long) (l
>> thirty_two
);
3012 xsnprintf (str
, CELLSIZE
, "%lx",
3013 (unsigned long) (l
& 0xffffffff));
3015 xsnprintf (str
, CELLSIZE
, "%lx%08lx", high
,
3016 (unsigned long) (l
& 0xffffffff));
3021 xsnprintf (str
, CELLSIZE
, "%lx", (unsigned long) l
);
3025 xsnprintf (str
, CELLSIZE
, "%x", (unsigned short) (l
& 0xffff));
3028 str
= phex_nz (l
, sizeof (l
));
3035 /* Converts a LONGEST to a C-format hexadecimal literal and stores it
3036 in a static string. Returns a pointer to this string. */
3038 hex_string (LONGEST num
)
3040 char *result
= get_cell ();
3042 xsnprintf (result
, CELLSIZE
, "0x%s", phex_nz (num
, sizeof (num
)));
3046 /* Converts a LONGEST number to a C-format hexadecimal literal and
3047 stores it in a static string. Returns a pointer to this string
3048 that is valid until the next call. The number is padded on the
3049 left with 0s to at least WIDTH characters. */
3051 hex_string_custom (LONGEST num
, int width
)
3053 char *result
= get_cell ();
3054 char *result_end
= result
+ CELLSIZE
- 1;
3055 const char *hex
= phex_nz (num
, sizeof (num
));
3056 int hex_len
= strlen (hex
);
3058 if (hex_len
> width
)
3060 if (width
+ 2 >= CELLSIZE
)
3061 internal_error (__FILE__
, __LINE__
, _("\
3062 hex_string_custom: insufficient space to store result"));
3064 strcpy (result_end
- width
- 2, "0x");
3065 memset (result_end
- width
, '0', width
);
3066 strcpy (result_end
- hex_len
, hex
);
3067 return result_end
- width
- 2;
3070 /* Convert VAL to a numeral in the given radix. For
3071 * radix 10, IS_SIGNED may be true, indicating a signed quantity;
3072 * otherwise VAL is interpreted as unsigned. If WIDTH is supplied,
3073 * it is the minimum width (0-padded if needed). USE_C_FORMAT means
3074 * to use C format in all cases. If it is false, then 'x'
3075 * and 'o' formats do not include a prefix (0x or leading 0). */
3078 int_string (LONGEST val
, int radix
, int is_signed
, int width
,
3088 result
= hex_string (val
);
3090 result
= hex_string_custom (val
, width
);
3097 if (is_signed
&& val
< 0)
3098 return decimal2str ("-", -val
, width
);
3100 return decimal2str ("", val
, width
);
3104 char *result
= octal2str (val
, width
);
3106 if (use_c_format
|| val
== 0)
3112 internal_error (__FILE__
, __LINE__
,
3113 _("failed internal consistency check"));
3117 /* Convert a CORE_ADDR into a string. */
3119 core_addr_to_string (const CORE_ADDR addr
)
3121 char *str
= get_cell ();
3124 strcat (str
, phex (addr
, sizeof (addr
)));
3129 core_addr_to_string_nz (const CORE_ADDR addr
)
3131 char *str
= get_cell ();
3134 strcat (str
, phex_nz (addr
, sizeof (addr
)));
3138 /* Convert a string back into a CORE_ADDR. */
3140 string_to_core_addr (const char *my_string
)
3144 if (my_string
[0] == '0' && tolower (my_string
[1]) == 'x')
3146 /* Assume that it is in hex. */
3149 for (i
= 2; my_string
[i
] != '\0'; i
++)
3151 if (isdigit (my_string
[i
]))
3152 addr
= (my_string
[i
] - '0') + (addr
* 16);
3153 else if (isxdigit (my_string
[i
]))
3154 addr
= (tolower (my_string
[i
]) - 'a' + 0xa) + (addr
* 16);
3156 error (_("invalid hex \"%s\""), my_string
);
3161 /* Assume that it is in decimal. */
3164 for (i
= 0; my_string
[i
] != '\0'; i
++)
3166 if (isdigit (my_string
[i
]))
3167 addr
= (my_string
[i
] - '0') + (addr
* 10);
3169 error (_("invalid decimal \"%s\""), my_string
);
3177 host_address_to_string (const void *addr
)
3179 char *str
= get_cell ();
3181 xsnprintf (str
, CELLSIZE
, "0x%s", phex_nz ((uintptr_t) addr
, sizeof (addr
)));
3186 gdb_realpath (const char *filename
)
3188 /* Method 1: The system has a compile time upper bound on a filename
3189 path. Use that and realpath() to canonicalize the name. This is
3190 the most common case. Note that, if there isn't a compile time
3191 upper bound, you want to avoid realpath() at all costs. */
3192 #if defined(HAVE_REALPATH)
3194 # if defined (PATH_MAX)
3196 # define USE_REALPATH
3197 # elif defined (MAXPATHLEN)
3198 char buf
[MAXPATHLEN
];
3199 # define USE_REALPATH
3201 # if defined (USE_REALPATH)
3202 const char *rp
= realpath (filename
, buf
);
3206 return xstrdup (rp
);
3209 #endif /* HAVE_REALPATH */
3211 /* Method 2: The host system (i.e., GNU) has the function
3212 canonicalize_file_name() which malloc's a chunk of memory and
3213 returns that, use that. */
3214 #if defined(HAVE_CANONICALIZE_FILE_NAME)
3216 char *rp
= canonicalize_file_name (filename
);
3219 return xstrdup (filename
);
3225 /* FIXME: cagney/2002-11-13:
3227 Method 2a: Use realpath() with a NULL buffer. Some systems, due
3228 to the problems described in method 3, have modified their
3229 realpath() implementation so that it will allocate a buffer when
3230 NULL is passed in. Before this can be used, though, some sort of
3231 configure time test would need to be added. Otherwize the code
3232 will likely core dump. */
3234 /* Method 3: Now we're getting desperate! The system doesn't have a
3235 compile time buffer size and no alternative function. Query the
3236 OS, using pathconf(), for the buffer limit. Care is needed
3237 though, some systems do not limit PATH_MAX (return -1 for
3238 pathconf()) making it impossible to pass a correctly sized buffer
3239 to realpath() (it could always overflow). On those systems, we
3241 #if defined (HAVE_REALPATH) && defined (HAVE_UNISTD_H) && defined(HAVE_ALLOCA)
3243 /* Find out the max path size. */
3244 long path_max
= pathconf ("/", _PC_PATH_MAX
);
3248 /* PATH_MAX is bounded. */
3249 char *buf
= alloca (path_max
);
3250 char *rp
= realpath (filename
, buf
);
3252 return xstrdup (rp
? rp
: filename
);
3257 /* The MS Windows method. If we don't have realpath, we assume we
3258 don't have symlinks and just canonicalize to a Windows absolute
3259 path. GetFullPath converts ../ and ./ in relative paths to
3260 absolute paths, filling in current drive if one is not given
3261 or using the current directory of a specified drive (eg, "E:foo").
3262 It also converts all forward slashes to back slashes. */
3263 /* The file system is case-insensitive but case-preserving.
3264 So we do not lowercase the path. Otherwise, we might not
3265 be able to display the original casing in a given path. */
3266 #if defined (_WIN32)
3269 DWORD len
= GetFullPathName (filename
, MAX_PATH
, buf
, NULL
);
3271 if (len
> 0 && len
< MAX_PATH
)
3272 return xstrdup (buf
);
3276 /* This system is a lost cause, just dup the buffer. */
3277 return xstrdup (filename
);
3281 align_up (ULONGEST v
, int n
)
3283 /* Check that N is really a power of two. */
3284 gdb_assert (n
&& (n
& (n
-1)) == 0);
3285 return (v
+ n
- 1) & -n
;
3289 align_down (ULONGEST v
, int n
)
3291 /* Check that N is really a power of two. */
3292 gdb_assert (n
&& (n
& (n
-1)) == 0);
3296 /* Allocation function for the libiberty hash table which uses an
3297 obstack. The obstack is passed as DATA. */
3300 hashtab_obstack_allocate (void *data
, size_t size
, size_t count
)
3302 unsigned int total
= size
* count
;
3303 void *ptr
= obstack_alloc ((struct obstack
*) data
, total
);
3305 memset (ptr
, 0, total
);
3309 /* Trivial deallocation function for the libiberty splay tree and hash
3310 table - don't deallocate anything. Rely on later deletion of the
3311 obstack. DATA will be the obstack, although it is not needed
3315 dummy_obstack_deallocate (void *object
, void *data
)
3320 /* The bit offset of the highest byte in a ULONGEST, for overflow
3323 #define HIGH_BYTE_POSN ((sizeof (ULONGEST) - 1) * HOST_CHAR_BIT)
3325 /* True (non-zero) iff DIGIT is a valid digit in radix BASE,
3326 where 2 <= BASE <= 36. */
3329 is_digit_in_base (unsigned char digit
, int base
)
3331 if (!isalnum (digit
))
3334 return (isdigit (digit
) && digit
< base
+ '0');
3336 return (isdigit (digit
) || tolower (digit
) < base
- 10 + 'a');
3340 digit_to_int (unsigned char c
)
3345 return tolower (c
) - 'a' + 10;
3348 /* As for strtoul, but for ULONGEST results. */
3351 strtoulst (const char *num
, const char **trailer
, int base
)
3353 unsigned int high_part
;
3358 /* Skip leading whitespace. */
3359 while (isspace (num
[i
]))
3362 /* Handle prefixes. */
3365 else if (num
[i
] == '-')
3371 if (base
== 0 || base
== 16)
3373 if (num
[i
] == '0' && (num
[i
+ 1] == 'x' || num
[i
+ 1] == 'X'))
3381 if (base
== 0 && num
[i
] == '0')
3387 if (base
< 2 || base
> 36)
3393 result
= high_part
= 0;
3394 for (; is_digit_in_base (num
[i
], base
); i
+= 1)
3396 result
= result
* base
+ digit_to_int (num
[i
]);
3397 high_part
= high_part
* base
+ (unsigned int) (result
>> HIGH_BYTE_POSN
);
3398 result
&= ((ULONGEST
) 1 << HIGH_BYTE_POSN
) - 1;
3399 if (high_part
> 0xff)
3402 result
= ~ (ULONGEST
) 0;
3409 if (trailer
!= NULL
)
3412 result
= result
+ ((ULONGEST
) high_part
<< HIGH_BYTE_POSN
);
3419 /* Simple, portable version of dirname that does not modify its
3423 ldirname (const char *filename
)
3425 const char *base
= lbasename (filename
);
3428 while (base
> filename
&& IS_DIR_SEPARATOR (base
[-1]))
3431 if (base
== filename
)
3434 dirname
= xmalloc (base
- filename
+ 2);
3435 memcpy (dirname
, filename
, base
- filename
);
3437 /* On DOS based file systems, convert "d:foo" to "d:.", so that we
3438 create "d:./bar" later instead of the (different) "d:/bar". */
3439 if (base
- filename
== 2 && IS_ABSOLUTE_PATH (base
)
3440 && !IS_DIR_SEPARATOR (filename
[0]))
3441 dirname
[base
++ - filename
] = '.';
3443 dirname
[base
- filename
] = '\0';
3447 /* Call libiberty's buildargv, and return the result.
3448 If buildargv fails due to out-of-memory, call nomem.
3449 Therefore, the returned value is guaranteed to be non-NULL,
3450 unless the parameter itself is NULL. */
3453 gdb_buildargv (const char *s
)
3455 char **argv
= buildargv (s
);
3457 if (s
!= NULL
&& argv
== NULL
)
3463 compare_positive_ints (const void *ap
, const void *bp
)
3465 /* Because we know we're comparing two ints which are positive,
3466 there's no danger of overflow here. */
3467 return * (int *) ap
- * (int *) bp
;
3470 /* String compare function for qsort. */
3473 compare_strings (const void *arg1
, const void *arg2
)
3475 const char **s1
= (const char **) arg1
;
3476 const char **s2
= (const char **) arg2
;
3478 return strcmp (*s1
, *s2
);
3481 #define AMBIGUOUS_MESS1 ".\nMatching formats:"
3482 #define AMBIGUOUS_MESS2 \
3483 ".\nUse \"set gnutarget format-name\" to specify the format."
3486 gdb_bfd_errmsg (bfd_error_type error_tag
, char **matching
)
3492 /* Check if errmsg just need simple return. */
3493 if (error_tag
!= bfd_error_file_ambiguously_recognized
|| matching
== NULL
)
3494 return bfd_errmsg (error_tag
);
3496 ret_len
= strlen (bfd_errmsg (error_tag
)) + strlen (AMBIGUOUS_MESS1
)
3497 + strlen (AMBIGUOUS_MESS2
);
3498 for (p
= matching
; *p
; p
++)
3499 ret_len
+= strlen (*p
) + 1;
3500 ret
= xmalloc (ret_len
+ 1);
3502 make_cleanup (xfree
, ret
);
3504 strcpy (retp
, bfd_errmsg (error_tag
));
3505 retp
+= strlen (retp
);
3507 strcpy (retp
, AMBIGUOUS_MESS1
);
3508 retp
+= strlen (retp
);
3510 for (p
= matching
; *p
; p
++)
3512 sprintf (retp
, " %s", *p
);
3513 retp
+= strlen (retp
);
3517 strcpy (retp
, AMBIGUOUS_MESS2
);
3522 /* Return ARGS parsed as a valid pid, or throw an error. */
3525 parse_pid_to_attach (char *args
)
3531 error_no_arg (_("process-id to attach"));
3534 pid
= strtoul (args
, &dummy
, 0);
3535 /* Some targets don't set errno on errors, grrr! */
3536 if ((pid
== 0 && dummy
== args
) || dummy
!= &args
[strlen (args
)])
3537 error (_("Illegal process-id: %s."), args
);
3542 /* Helper for make_bpstat_clear_actions_cleanup. */
3545 do_bpstat_clear_actions_cleanup (void *unused
)
3547 bpstat_clear_actions ();
3550 /* Call bpstat_clear_actions for the case an exception is throw. You should
3551 discard_cleanups if no exception is caught. */
3554 make_bpstat_clear_actions_cleanup (void)
3556 return make_cleanup (do_bpstat_clear_actions_cleanup
, NULL
);
3559 /* Check for GCC >= 4.x according to the symtab->producer string. Return minor
3560 version (x) of 4.x in such case. If it is not GCC or it is GCC older than
3561 4.x return -1. If it is GCC 5.x or higher return INT_MAX. */
3564 producer_is_gcc_ge_4 (const char *producer
)
3569 if (producer
== NULL
)
3571 /* For unknown compilers expect their behavior is not compliant. For GCC
3572 this case can also happen for -gdwarf-4 type units supported since
3578 /* Skip any identifier after "GNU " - such as "C++" or "Java". */
3580 if (strncmp (producer
, "GNU ", strlen ("GNU ")) != 0)
3582 /* For non-GCC compilers expect their behavior is not compliant. */
3586 cs
= &producer
[strlen ("GNU ")];
3587 while (*cs
&& !isdigit (*cs
))
3589 if (sscanf (cs
, "%d.%d", &major
, &minor
) != 2)
3591 /* Not recognized as GCC. */
3603 /* Helper for make_cleanup_free_char_ptr_vec. */
3606 do_free_char_ptr_vec (void *arg
)
3608 VEC (char_ptr
) *char_ptr_vec
= arg
;
3610 free_char_ptr_vec (char_ptr_vec
);
3613 /* Make cleanup handler calling xfree for each element of CHAR_PTR_VEC and
3614 final VEC_free for CHAR_PTR_VEC itself.
3616 You must not modify CHAR_PTR_VEC after this cleanup registration as the
3617 CHAR_PTR_VEC base address may change on its updates. Contrary to VEC_free
3618 this function does not (cannot) clear the pointer. */
3621 make_cleanup_free_char_ptr_vec (VEC (char_ptr
) *char_ptr_vec
)
3623 return make_cleanup (do_free_char_ptr_vec
, char_ptr_vec
);
3626 /* Substitute all occurences of string FROM by string TO in *STRINGP. *STRINGP
3627 must come from xrealloc-compatible allocator and it may be updated. FROM
3628 needs to be delimited by IS_DIR_SEPARATOR or DIRNAME_SEPARATOR (or be
3629 located at the start or end of *STRINGP. */
3632 substitute_path_component (char **stringp
, const char *from
, const char *to
)
3634 char *string
= *stringp
, *s
;
3635 const size_t from_len
= strlen (from
);
3636 const size_t to_len
= strlen (to
);
3640 s
= strstr (s
, from
);
3644 if ((s
== string
|| IS_DIR_SEPARATOR (s
[-1])
3645 || s
[-1] == DIRNAME_SEPARATOR
)
3646 && (s
[from_len
] == '\0' || IS_DIR_SEPARATOR (s
[from_len
])
3647 || s
[from_len
] == DIRNAME_SEPARATOR
))
3651 string_new
= xrealloc (string
, (strlen (string
) + to_len
+ 1));
3653 /* Relocate the current S pointer. */
3654 s
= s
- string
+ string_new
;
3655 string
= string_new
;
3657 /* Replace from by to. */
3658 memmove (&s
[to_len
], &s
[from_len
], strlen (&s
[from_len
]) + 1);
3659 memcpy (s
, to
, to_len
);
3674 /* SIGALRM handler for waitpid_with_timeout. */
3677 sigalrm_handler (int signo
)
3679 /* Nothing to do. */
3684 /* Wrapper to wait for child PID to die with TIMEOUT.
3685 TIMEOUT is the time to stop waiting in seconds.
3686 If TIMEOUT is zero, pass WNOHANG to waitpid.
3687 Returns PID if it was successfully waited for, otherwise -1.
3689 Timeouts are currently implemented with alarm and SIGALRM.
3690 If the host does not support them, this waits "forever".
3691 It would be odd though for a host to have waitpid and not SIGALRM. */
3694 wait_to_die_with_timeout (pid_t pid
, int *status
, int timeout
)
3696 pid_t waitpid_result
;
3698 gdb_assert (pid
> 0);
3699 gdb_assert (timeout
>= 0);
3704 #if defined (HAVE_SIGACTION) && defined (SA_RESTART)
3705 struct sigaction sa
, old_sa
;
3707 sa
.sa_handler
= sigalrm_handler
;
3708 sigemptyset (&sa
.sa_mask
);
3710 sigaction (SIGALRM
, &sa
, &old_sa
);
3714 ofunc
= (void (*)()) signal (SIGALRM
, sigalrm_handler
);
3720 waitpid_result
= waitpid (pid
, status
, 0);
3724 #if defined (HAVE_SIGACTION) && defined (SA_RESTART)
3725 sigaction (SIGALRM
, &old_sa
, NULL
);
3727 signal (SIGALRM
, ofunc
);
3732 waitpid_result
= waitpid (pid
, status
, WNOHANG
);
3734 if (waitpid_result
== pid
)
3740 #endif /* HAVE_WAITPID */
3742 /* Provide fnmatch compatible function for FNM_FILE_NAME matching of host files.
3743 Both FNM_FILE_NAME and FNM_NOESCAPE must be set in FLAGS.
3745 It handles correctly HAVE_DOS_BASED_FILE_SYSTEM and
3746 HAVE_CASE_INSENSITIVE_FILE_SYSTEM. */
3749 gdb_filename_fnmatch (const char *pattern
, const char *string
, int flags
)
3751 gdb_assert ((flags
& FNM_FILE_NAME
) != 0);
3753 /* It is unclear how '\' escaping vs. directory separator should coexist. */
3754 gdb_assert ((flags
& FNM_NOESCAPE
) != 0);
3756 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
3758 char *pattern_slash
, *string_slash
;
3760 /* Replace '\' by '/' in both strings. */
3762 pattern_slash
= alloca (strlen (pattern
) + 1);
3763 strcpy (pattern_slash
, pattern
);
3764 pattern
= pattern_slash
;
3765 for (; *pattern_slash
!= 0; pattern_slash
++)
3766 if (IS_DIR_SEPARATOR (*pattern_slash
))
3767 *pattern_slash
= '/';
3769 string_slash
= alloca (strlen (string
) + 1);
3770 strcpy (string_slash
, string
);
3771 string
= string_slash
;
3772 for (; *string_slash
!= 0; string_slash
++)
3773 if (IS_DIR_SEPARATOR (*string_slash
))
3774 *string_slash
= '/';
3776 #endif /* HAVE_DOS_BASED_FILE_SYSTEM */
3778 #ifdef HAVE_CASE_INSENSITIVE_FILE_SYSTEM
3779 flags
|= FNM_CASEFOLD
;
3780 #endif /* HAVE_CASE_INSENSITIVE_FILE_SYSTEM */
3782 return fnmatch (pattern
, string
, flags
);
3785 /* Provide a prototype to silence -Wmissing-prototypes. */
3786 extern initialize_file_ftype _initialize_utils
;
3789 _initialize_utils (void)
3791 add_internal_problem_command (&internal_error_problem
);
3792 add_internal_problem_command (&internal_warning_problem
);