1 /* General utility routines for GDB, the GNU debugger.
3 Copyright (C) 1986-2018 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/>. */
23 #include "event-top.h"
24 #include "gdbthread.h"
27 #ifdef HAVE_SYS_RESOURCE_H
28 #include <sys/resource.h>
29 #endif /* HAVE_SYS_RESOURCE_H */
32 #include "tui/tui.h" /* For tui_get_command_dimension. */
44 #include "gdb-demangle.h"
45 #include "expression.h"
49 #include "filenames.h"
51 #include "gdb_obstack.h"
57 #include "inferior.h" /* for signed_pointer_to_address */
59 #include "gdb_curses.h"
61 #include "readline/readline.h"
65 #include "gdb_usleep.h"
67 #include "gdb_regex.h"
68 #include "job-control.h"
69 #include "common/selftest.h"
70 #include "common/gdb_optional.h"
71 #include "cp-support.h"
73 #include "common/pathstuff.h"
76 extern PTR
malloc (); /* ARI: PTR */
78 #if !HAVE_DECL_REALLOC
79 extern PTR
realloc (); /* ARI: PTR */
85 void (*deprecated_error_begin_hook
) (void);
87 /* Prototypes for local functions */
89 static void vfprintf_maybe_filtered (struct ui_file
*, const char *,
90 va_list, int) ATTRIBUTE_PRINTF (2, 0);
92 static void fputs_maybe_filtered (const char *, struct ui_file
*, int);
94 static void prompt_for_continue (void);
96 static void set_screen_size (void);
97 static void set_width (void);
99 /* Time spent in prompt_for_continue in the currently executing command
100 waiting for user to respond.
101 Initialized in make_command_stats_cleanup.
102 Modified in prompt_for_continue and defaulted_query.
103 Used in report_command_stats. */
105 static std::chrono::steady_clock::duration prompt_for_continue_wait_time
;
107 /* A flag indicating whether to timestamp debugging messages. */
109 static int debug_timestamp
= 0;
111 /* Nonzero means that strings with character values >0x7F should be printed
112 as octal escapes. Zero means just print the value (e.g. it's an
113 international character, and the terminal or window can cope.) */
115 int sevenbit_strings
= 0;
117 show_sevenbit_strings (struct ui_file
*file
, int from_tty
,
118 struct cmd_list_element
*c
, const char *value
)
120 fprintf_filtered (file
, _("Printing of 8-bit characters "
121 "in strings as \\nnn is %s.\n"),
125 /* String to be printed before warning messages, if any. */
127 const char *warning_pre_print
= "\nwarning: ";
129 int pagination_enabled
= 1;
131 show_pagination_enabled (struct ui_file
*file
, int from_tty
,
132 struct cmd_list_element
*c
, const char *value
)
134 fprintf_filtered (file
, _("State of pagination is %s.\n"), value
);
138 /* Cleanup utilities.
140 These are not defined in cleanups.c (nor declared in cleanups.h)
141 because while they use the "cleanup API" they are not part of the
144 /* Helper for make_cleanup_unpush_target. */
147 do_unpush_target (void *arg
)
149 struct target_ops
*ops
= (struct target_ops
*) arg
;
154 /* Return a new cleanup that unpushes OPS. */
157 make_cleanup_unpush_target (struct target_ops
*ops
)
159 return make_cleanup (do_unpush_target
, ops
);
162 /* Helper for make_cleanup_value_free_to_mark. */
165 do_value_free_to_mark (void *value
)
167 value_free_to_mark ((struct value
*) value
);
170 /* Free all values allocated since MARK was obtained by value_mark
171 (except for those released) when the cleanup is run. */
174 make_cleanup_value_free_to_mark (struct value
*mark
)
176 return make_cleanup (do_value_free_to_mark
, mark
);
179 /* This function is useful for cleanups.
183 old_chain = make_cleanup (free_current_contents, &foo);
185 to arrange to free the object thus allocated. */
188 free_current_contents (void *ptr
)
190 void **location
= (void **) ptr
;
192 if (location
== NULL
)
193 internal_error (__FILE__
, __LINE__
,
194 _("free_current_contents: NULL pointer"));
195 if (*location
!= NULL
)
204 /* Print a warning message. The first argument STRING is the warning
205 message, used as an fprintf format string, the second is the
206 va_list of arguments for that string. A warning is unfiltered (not
207 paginated) so that the user does not need to page through each
208 screen full of warnings when there are lots of them. */
211 vwarning (const char *string
, va_list args
)
213 if (deprecated_warning_hook
)
214 (*deprecated_warning_hook
) (string
, args
);
217 gdb::optional
<target_terminal::scoped_restore_terminal_state
> term_state
;
218 if (target_supports_terminal_ours ())
220 term_state
.emplace ();
221 target_terminal::ours_for_output ();
223 if (filtered_printing_initialized ())
224 wrap_here (""); /* Force out any buffered output. */
225 gdb_flush (gdb_stdout
);
226 if (warning_pre_print
)
227 fputs_unfiltered (warning_pre_print
, gdb_stderr
);
228 vfprintf_unfiltered (gdb_stderr
, string
, args
);
229 fprintf_unfiltered (gdb_stderr
, "\n");
233 /* Print an error message and return to command level.
234 The first argument STRING is the error message, used as a fprintf string,
235 and the remaining args are passed as arguments to it. */
238 verror (const char *string
, va_list args
)
240 throw_verror (GENERIC_ERROR
, string
, args
);
244 error_stream (const string_file
&stream
)
246 error (("%s"), stream
.c_str ());
249 /* Emit a message and abort. */
251 static void ATTRIBUTE_NORETURN
252 abort_with_message (const char *msg
)
254 if (current_ui
== NULL
)
257 fputs_unfiltered (msg
, gdb_stderr
);
259 abort (); /* NOTE: GDB has only three calls to abort(). */
262 /* Dump core trying to increase the core soft limit to hard limit first. */
267 #ifdef HAVE_SETRLIMIT
268 struct rlimit rlim
= { RLIM_INFINITY
, RLIM_INFINITY
};
270 setrlimit (RLIMIT_CORE
, &rlim
);
271 #endif /* HAVE_SETRLIMIT */
273 abort (); /* NOTE: GDB has only three calls to abort(). */
276 /* Check whether GDB will be able to dump core using the dump_core
277 function. Returns zero if GDB cannot or should not dump core.
278 If LIMIT_KIND is LIMIT_CUR the user's soft limit will be respected.
279 If LIMIT_KIND is LIMIT_MAX only the hard limit will be respected. */
282 can_dump_core (enum resource_limit_kind limit_kind
)
284 #ifdef HAVE_GETRLIMIT
287 /* Be quiet and assume we can dump if an error is returned. */
288 if (getrlimit (RLIMIT_CORE
, &rlim
) != 0)
294 if (rlim
.rlim_cur
== 0)
298 if (rlim
.rlim_max
== 0)
301 #endif /* HAVE_GETRLIMIT */
306 /* Print a warning that we cannot dump core. */
309 warn_cant_dump_core (const char *reason
)
311 fprintf_unfiltered (gdb_stderr
,
312 _("%s\nUnable to dump core, use `ulimit -c"
313 " unlimited' before executing GDB next time.\n"),
317 /* Check whether GDB will be able to dump core using the dump_core
318 function, and print a warning if we cannot. */
321 can_dump_core_warn (enum resource_limit_kind limit_kind
,
324 int core_dump_allowed
= can_dump_core (limit_kind
);
326 if (!core_dump_allowed
)
327 warn_cant_dump_core (reason
);
329 return core_dump_allowed
;
332 /* Allow the user to configure the debugger behavior with respect to
333 what to do when an internal problem is detected. */
335 const char internal_problem_ask
[] = "ask";
336 const char internal_problem_yes
[] = "yes";
337 const char internal_problem_no
[] = "no";
338 static const char *const internal_problem_modes
[] =
340 internal_problem_ask
,
341 internal_problem_yes
,
346 /* Print a message reporting an internal error/warning. Ask the user
347 if they want to continue, dump core, or just exit. Return
348 something to indicate a quit. */
350 struct internal_problem
353 int user_settable_should_quit
;
354 const char *should_quit
;
355 int user_settable_should_dump_core
;
356 const char *should_dump_core
;
359 /* Report a problem, internal to GDB, to the user. Once the problem
360 has been reported, and assuming GDB didn't quit, the caller can
361 either allow execution to resume or throw an error. */
363 static void ATTRIBUTE_PRINTF (4, 0)
364 internal_vproblem (struct internal_problem
*problem
,
365 const char *file
, int line
, const char *fmt
, va_list ap
)
372 /* Don't allow infinite error/warning recursion. */
374 static char msg
[] = "Recursive internal problem.\n";
383 abort_with_message (msg
);
386 /* Newer GLIBC versions put the warn_unused_result attribute
387 on write, but this is one of those rare cases where
388 ignoring the return value is correct. Casting to (void)
389 does not fix this problem. This is the solution suggested
390 at http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25509. */
391 if (write (STDERR_FILENO
, msg
, sizeof (msg
)) != sizeof (msg
))
392 abort (); /* NOTE: GDB has only three calls to abort(). */
397 /* Create a string containing the full error/warning message. Need
398 to call query with this full string, as otherwize the reason
399 (error/warning) and question become separated. Format using a
400 style similar to a compiler error message. Include extra detail
401 so that the user knows that they are living on the edge. */
403 std::string msg
= string_vprintf (fmt
, ap
);
404 reason
= string_printf ("%s:%d: %s: %s\n"
405 "A problem internal to GDB has been detected,\n"
406 "further debugging may prove unreliable.",
407 file
, line
, problem
->name
, msg
.c_str ());
410 /* Fall back to abort_with_message if gdb_stderr is not set up. */
411 if (current_ui
== NULL
)
413 fputs (reason
.c_str (), stderr
);
414 abort_with_message ("\n");
417 /* Try to get the message out and at the start of a new line. */
418 gdb::optional
<target_terminal::scoped_restore_terminal_state
> term_state
;
419 if (target_supports_terminal_ours ())
421 term_state
.emplace ();
422 target_terminal::ours_for_output ();
424 if (filtered_printing_initialized ())
427 /* Emit the message unless query will emit it below. */
428 if (problem
->should_quit
!= internal_problem_ask
430 || !filtered_printing_initialized ())
431 fprintf_unfiltered (gdb_stderr
, "%s\n", reason
.c_str ());
433 if (problem
->should_quit
== internal_problem_ask
)
435 /* Default (yes/batch case) is to quit GDB. When in batch mode
436 this lessens the likelihood of GDB going into an infinite
438 if (!confirm
|| !filtered_printing_initialized ())
441 quit_p
= query (_("%s\nQuit this debugging session? "),
444 else if (problem
->should_quit
== internal_problem_yes
)
446 else if (problem
->should_quit
== internal_problem_no
)
449 internal_error (__FILE__
, __LINE__
, _("bad switch"));
451 fputs_unfiltered (_("\nThis is a bug, please report it."), gdb_stderr
);
452 if (REPORT_BUGS_TO
[0])
453 fprintf_unfiltered (gdb_stderr
, _(" For instructions, see:\n%s."),
455 fputs_unfiltered ("\n\n", gdb_stderr
);
457 if (problem
->should_dump_core
== internal_problem_ask
)
459 if (!can_dump_core_warn (LIMIT_MAX
, reason
.c_str ()))
461 else if (!filtered_printing_initialized ())
465 /* Default (yes/batch case) is to dump core. This leaves a GDB
466 `dropping' so that it is easier to see that something went
468 dump_core_p
= query (_("%s\nCreate a core file of GDB? "),
472 else if (problem
->should_dump_core
== internal_problem_yes
)
473 dump_core_p
= can_dump_core_warn (LIMIT_MAX
, reason
.c_str ());
474 else if (problem
->should_dump_core
== internal_problem_no
)
477 internal_error (__FILE__
, __LINE__
, _("bad switch"));
490 #ifdef HAVE_WORKING_FORK
500 static struct internal_problem internal_error_problem
= {
501 "internal-error", 1, internal_problem_ask
, 1, internal_problem_ask
505 internal_verror (const char *file
, int line
, const char *fmt
, va_list ap
)
507 internal_vproblem (&internal_error_problem
, file
, line
, fmt
, ap
);
508 throw_quit (_("Command aborted."));
511 static struct internal_problem internal_warning_problem
= {
512 "internal-warning", 1, internal_problem_ask
, 1, internal_problem_ask
516 internal_vwarning (const char *file
, int line
, const char *fmt
, va_list ap
)
518 internal_vproblem (&internal_warning_problem
, file
, line
, fmt
, ap
);
521 static struct internal_problem demangler_warning_problem
= {
522 "demangler-warning", 1, internal_problem_ask
, 0, internal_problem_no
526 demangler_vwarning (const char *file
, int line
, const char *fmt
, va_list ap
)
528 internal_vproblem (&demangler_warning_problem
, file
, line
, fmt
, ap
);
532 demangler_warning (const char *file
, int line
, const char *string
, ...)
536 va_start (ap
, string
);
537 demangler_vwarning (file
, line
, string
, ap
);
541 /* Dummy functions to keep add_prefix_cmd happy. */
544 set_internal_problem_cmd (const char *args
, int from_tty
)
549 show_internal_problem_cmd (const char *args
, int from_tty
)
553 /* When GDB reports an internal problem (error or warning) it gives
554 the user the opportunity to quit GDB and/or create a core file of
555 the current debug session. This function registers a few commands
556 that make it possible to specify that GDB should always or never
557 quit or create a core file, without asking. The commands look
560 maint set PROBLEM-NAME quit ask|yes|no
561 maint show PROBLEM-NAME quit
562 maint set PROBLEM-NAME corefile ask|yes|no
563 maint show PROBLEM-NAME corefile
565 Where PROBLEM-NAME is currently "internal-error" or
566 "internal-warning". */
569 add_internal_problem_command (struct internal_problem
*problem
)
571 struct cmd_list_element
**set_cmd_list
;
572 struct cmd_list_element
**show_cmd_list
;
576 set_cmd_list
= XNEW (struct cmd_list_element
*);
577 show_cmd_list
= XNEW (struct cmd_list_element
*);
578 *set_cmd_list
= NULL
;
579 *show_cmd_list
= NULL
;
581 set_doc
= xstrprintf (_("Configure what GDB does when %s is detected."),
584 show_doc
= xstrprintf (_("Show what GDB does when %s is detected."),
587 add_prefix_cmd (problem
->name
,
588 class_maintenance
, set_internal_problem_cmd
, set_doc
,
590 concat ("maintenance set ", problem
->name
, " ",
592 0/*allow-unknown*/, &maintenance_set_cmdlist
);
594 add_prefix_cmd (problem
->name
,
595 class_maintenance
, show_internal_problem_cmd
, show_doc
,
597 concat ("maintenance show ", problem
->name
, " ",
599 0/*allow-unknown*/, &maintenance_show_cmdlist
);
601 if (problem
->user_settable_should_quit
)
603 set_doc
= xstrprintf (_("Set whether GDB should quit "
604 "when an %s is detected"),
606 show_doc
= xstrprintf (_("Show whether GDB will quit "
607 "when an %s is detected"),
609 add_setshow_enum_cmd ("quit", class_maintenance
,
610 internal_problem_modes
,
611 &problem
->should_quit
,
624 if (problem
->user_settable_should_dump_core
)
626 set_doc
= xstrprintf (_("Set whether GDB should create a core "
627 "file of GDB when %s is detected"),
629 show_doc
= xstrprintf (_("Show whether GDB will create a core "
630 "file of GDB when %s is detected"),
632 add_setshow_enum_cmd ("corefile", class_maintenance
,
633 internal_problem_modes
,
634 &problem
->should_dump_core
,
648 /* Return a newly allocated string, containing the PREFIX followed
649 by the system error message for errno (separated by a colon). */
652 perror_string (const char *prefix
)
656 err
= safe_strerror (errno
);
657 return std::string (prefix
) + ": " + err
;
660 /* Print the system error message for errno, and also mention STRING
661 as the file name for which the error was encountered. Use ERRCODE
662 for the thrown exception. Then return to command level. */
665 throw_perror_with_name (enum errors errcode
, const char *string
)
667 std::string combined
= perror_string (string
);
669 /* I understand setting these is a matter of taste. Still, some people
670 may clear errno but not know about bfd_error. Doing this here is not
672 bfd_set_error (bfd_error_no_error
);
675 throw_error (errcode
, _("%s."), combined
.c_str ());
678 /* See throw_perror_with_name, ERRCODE defaults here to GENERIC_ERROR. */
681 perror_with_name (const char *string
)
683 throw_perror_with_name (GENERIC_ERROR
, string
);
686 /* Same as perror_with_name except that it prints a warning instead
687 of throwing an error. */
690 perror_warning_with_name (const char *string
)
692 std::string combined
= perror_string (string
);
693 warning (_("%s"), combined
.c_str ());
696 /* Print the system error message for ERRCODE, and also mention STRING
697 as the file name for which the error was encountered. */
700 print_sys_errmsg (const char *string
, int errcode
)
705 err
= safe_strerror (errcode
);
706 combined
= (char *) alloca (strlen (err
) + strlen (string
) + 3);
707 strcpy (combined
, string
);
708 strcat (combined
, ": ");
709 strcat (combined
, err
);
711 /* We want anything which was printed on stdout to come out first, before
713 gdb_flush (gdb_stdout
);
714 fprintf_unfiltered (gdb_stderr
, "%s.\n", combined
);
717 /* Control C eventually causes this to be called, at a convenient time. */
722 if (sync_quit_force_run
)
724 sync_quit_force_run
= 0;
725 quit_force (NULL
, 0);
729 /* No steenking SIGINT will ever be coming our way when the
730 program is resumed. Don't lie. */
734 /* If there is no terminal switching for this target, then we can't
735 possibly get screwed by the lack of job control. */
736 || !target_supports_terminal_ours ())
739 throw_quit ("Quit (expect signal SIGINT when the program is resumed)");
748 if (sync_quit_force_run
)
753 if (deprecated_interactive_hook
)
754 deprecated_interactive_hook ();
758 /* Called when a memory allocation fails, with the number of bytes of
759 memory requested in SIZE. */
762 malloc_failure (long size
)
766 internal_error (__FILE__
, __LINE__
,
767 _("virtual memory exhausted: can't allocate %ld bytes."),
772 internal_error (__FILE__
, __LINE__
, _("virtual memory exhausted."));
776 /* My replacement for the read system call.
777 Used like `read' but keeps going if `read' returns too soon. */
780 myread (int desc
, char *addr
, int len
)
787 val
= read (desc
, addr
, len
);
799 print_spaces (int n
, struct ui_file
*file
)
801 fputs_unfiltered (n_spaces (n
), file
);
804 /* Print a host address. */
807 gdb_print_host_address_1 (const void *addr
, struct ui_file
*stream
)
809 fprintf_filtered (stream
, "%s", host_address_to_string (addr
));
815 make_hex_string (const gdb_byte
*data
, size_t length
)
817 char *result
= (char *) xmalloc (length
* 2 + 1);
822 for (i
= 0; i
< length
; ++i
)
823 p
+= xsnprintf (p
, 3, "%02x", data
[i
]);
830 /* An RAII class that sets up to handle input and then tears down
831 during destruction. */
833 class scoped_input_handler
837 scoped_input_handler ()
838 : m_quit_handler (&quit_handler
, default_quit_handler
),
841 target_terminal::ours ();
842 ui_register_input_event_handler (current_ui
);
843 if (current_ui
->prompt_state
== PROMPT_BLOCKED
)
847 ~scoped_input_handler ()
850 ui_unregister_input_event_handler (m_ui
);
853 DISABLE_COPY_AND_ASSIGN (scoped_input_handler
);
857 /* Save and restore the terminal state. */
858 target_terminal::scoped_restore_terminal_state m_term_state
;
860 /* Save and restore the quit handler. */
861 scoped_restore_tmpl
<quit_handler_ftype
*> m_quit_handler
;
863 /* The saved UI, if non-NULL. */
869 /* This function supports the query, nquery, and yquery functions.
870 Ask user a y-or-n question and return 0 if answer is no, 1 if
871 answer is yes, or default the answer to the specified default
872 (for yquery or nquery). DEFCHAR may be 'y' or 'n' to provide a
873 default answer, or '\0' for no default.
874 CTLSTR is the control string and should end in "? ". It should
875 not say how to answer, because we do that.
876 ARGS are the arguments passed along with the CTLSTR argument to
879 static int ATTRIBUTE_PRINTF (1, 0)
880 defaulted_query (const char *ctlstr
, const char defchar
, va_list args
)
884 char def_answer
, not_def_answer
;
885 const char *y_string
, *n_string
;
887 /* Set up according to which answer is the default. */
892 not_def_answer
= 'N';
896 else if (defchar
== 'y')
900 not_def_answer
= 'N';
908 not_def_answer
= 'Y';
913 /* Automatically answer the default value if the user did not want
914 prompts or the command was issued with the server prefix. */
915 if (!confirm
|| server_command
)
918 /* If input isn't coming from the user directly, just say what
919 question we're asking, and then answer the default automatically. This
920 way, important error messages don't get lost when talking to GDB
922 if (current_ui
->instream
!= current_ui
->stdin_stream
923 || !input_interactive_p (current_ui
)
924 /* Restrict queries to the main UI. */
925 || current_ui
!= main_ui
)
927 target_terminal::scoped_restore_terminal_state term_state
;
928 target_terminal::ours_for_output ();
930 vfprintf_filtered (gdb_stdout
, ctlstr
, args
);
932 printf_filtered (_("(%s or %s) [answered %c; "
933 "input not from terminal]\n"),
934 y_string
, n_string
, def_answer
);
935 gdb_flush (gdb_stdout
);
940 if (deprecated_query_hook
)
942 target_terminal::scoped_restore_terminal_state term_state
;
943 return deprecated_query_hook (ctlstr
, args
);
946 /* Format the question outside of the loop, to avoid reusing args. */
947 std::string question
= string_vprintf (ctlstr
, args
);
949 = string_printf (_("%s%s(%s or %s) %s"),
950 annotation_level
> 1 ? "\n\032\032pre-query\n" : "",
951 question
.c_str (), y_string
, n_string
,
952 annotation_level
> 1 ? "\n\032\032query\n" : "");
954 /* Used to add duration we waited for user to respond to
955 prompt_for_continue_wait_time. */
956 using namespace std::chrono
;
957 steady_clock::time_point prompt_started
= steady_clock::now ();
959 scoped_input_handler prepare_input
;
963 char *response
, answer
;
965 gdb_flush (gdb_stdout
);
966 response
= gdb_readline_wrapper (prompt
.c_str ());
968 if (response
== NULL
) /* C-d */
970 printf_filtered ("EOF [assumed %c]\n", def_answer
);
975 answer
= response
[0];
980 /* Check answer. For the non-default, the user must specify
981 the non-default explicitly. */
982 if (answer
== not_def_answer
)
987 /* Otherwise, if a default was specified, the user may either
988 specify the required input or have it default by entering
990 if (answer
== def_answer
991 || (defchar
!= '\0' && answer
== '\0'))
996 /* Invalid entries are not defaulted and require another selection. */
997 printf_filtered (_("Please answer %s or %s.\n"),
1001 /* Add time spend in this routine to prompt_for_continue_wait_time. */
1002 prompt_for_continue_wait_time
+= steady_clock::now () - prompt_started
;
1004 if (annotation_level
> 1)
1005 printf_filtered (("\n\032\032post-query\n"));
1010 /* Ask user a y-or-n question and return 0 if answer is no, 1 if
1011 answer is yes, or 0 if answer is defaulted.
1012 Takes three args which are given to printf to print the question.
1013 The first, a control string, should end in "? ".
1014 It should not say how to answer, because we do that. */
1017 nquery (const char *ctlstr
, ...)
1022 va_start (args
, ctlstr
);
1023 ret
= defaulted_query (ctlstr
, 'n', args
);
1028 /* Ask user a y-or-n question and return 0 if answer is no, 1 if
1029 answer is yes, or 1 if answer is defaulted.
1030 Takes three args which are given to printf to print the question.
1031 The first, a control string, should end in "? ".
1032 It should not say how to answer, because we do that. */
1035 yquery (const char *ctlstr
, ...)
1040 va_start (args
, ctlstr
);
1041 ret
= defaulted_query (ctlstr
, 'y', args
);
1046 /* Ask user a y-or-n question and return 1 iff answer is yes.
1047 Takes three args which are given to printf to print the question.
1048 The first, a control string, should end in "? ".
1049 It should not say how to answer, because we do that. */
1052 query (const char *ctlstr
, ...)
1057 va_start (args
, ctlstr
);
1058 ret
= defaulted_query (ctlstr
, '\0', args
);
1063 /* A helper for parse_escape that converts a host character to a
1064 target character. C is the host character. If conversion is
1065 possible, then the target character is stored in *TARGET_C and the
1066 function returns 1. Otherwise, the function returns 0. */
1069 host_char_to_target (struct gdbarch
*gdbarch
, int c
, int *target_c
)
1074 auto_obstack host_data
;
1076 convert_between_encodings (target_charset (gdbarch
), host_charset (),
1077 (gdb_byte
*) &the_char
, 1, 1,
1078 &host_data
, translit_none
);
1080 if (obstack_object_size (&host_data
) == 1)
1083 *target_c
= *(char *) obstack_base (&host_data
);
1089 /* Parse a C escape sequence. STRING_PTR points to a variable
1090 containing a pointer to the string to parse. That pointer
1091 should point to the character after the \. That pointer
1092 is updated past the characters we use. The value of the
1093 escape sequence is returned.
1095 A negative value means the sequence \ newline was seen,
1096 which is supposed to be equivalent to nothing at all.
1098 If \ is followed by a null character, we return a negative
1099 value and leave the string pointer pointing at the null character.
1101 If \ is followed by 000, we return 0 and leave the string pointer
1102 after the zeros. A value of 0 does not mean end of string. */
1105 parse_escape (struct gdbarch
*gdbarch
, const char **string_ptr
)
1107 int target_char
= -2; /* Initialize to avoid GCC warnings. */
1108 int c
= *(*string_ptr
)++;
1127 int i
= host_hex_value (c
);
1132 if (isdigit (c
) && c
!= '8' && c
!= '9')
1136 i
+= host_hex_value (c
);
1172 if (!host_char_to_target (gdbarch
, c
, &target_char
))
1173 error (_("The escape sequence `\\%c' is equivalent to plain `%c',"
1174 " which has no equivalent\nin the `%s' character set."),
1175 c
, c
, target_charset (gdbarch
));
1179 /* Print the character C on STREAM as part of the contents of a literal
1180 string whose delimiter is QUOTER. Note that this routine should only
1181 be called for printing things which are independent of the language
1182 of the program being debugged.
1184 printchar will normally escape backslashes and instances of QUOTER. If
1185 QUOTER is 0, printchar won't escape backslashes or any quoting character.
1186 As a side effect, if you pass the backslash character as the QUOTER,
1187 printchar will escape backslashes as usual, but not any other quoting
1191 printchar (int c
, void (*do_fputs
) (const char *, struct ui_file
*),
1192 void (*do_fprintf
) (struct ui_file
*, const char *, ...)
1193 ATTRIBUTE_FPTR_PRINTF_2
, struct ui_file
*stream
, int quoter
)
1195 c
&= 0xFF; /* Avoid sign bit follies */
1197 if (c
< 0x20 || /* Low control chars */
1198 (c
>= 0x7F && c
< 0xA0) || /* DEL, High controls */
1199 (sevenbit_strings
&& c
>= 0x80))
1200 { /* high order bit set */
1204 do_fputs ("\\n", stream
);
1207 do_fputs ("\\b", stream
);
1210 do_fputs ("\\t", stream
);
1213 do_fputs ("\\f", stream
);
1216 do_fputs ("\\r", stream
);
1219 do_fputs ("\\e", stream
);
1222 do_fputs ("\\a", stream
);
1225 do_fprintf (stream
, "\\%.3o", (unsigned int) c
);
1231 if (quoter
!= 0 && (c
== '\\' || c
== quoter
))
1232 do_fputs ("\\", stream
);
1233 do_fprintf (stream
, "%c", c
);
1237 /* Print the character C on STREAM as part of the contents of a
1238 literal string whose delimiter is QUOTER. Note that these routines
1239 should only be call for printing things which are independent of
1240 the language of the program being debugged. */
1243 fputstr_filtered (const char *str
, int quoter
, struct ui_file
*stream
)
1246 printchar (*str
++, fputs_filtered
, fprintf_filtered
, stream
, quoter
);
1250 fputstr_unfiltered (const char *str
, int quoter
, struct ui_file
*stream
)
1253 printchar (*str
++, fputs_unfiltered
, fprintf_unfiltered
, stream
, quoter
);
1257 fputstrn_filtered (const char *str
, int n
, int quoter
,
1258 struct ui_file
*stream
)
1262 for (i
= 0; i
< n
; i
++)
1263 printchar (str
[i
], fputs_filtered
, fprintf_filtered
, stream
, quoter
);
1267 fputstrn_unfiltered (const char *str
, int n
, int quoter
,
1268 struct ui_file
*stream
)
1272 for (i
= 0; i
< n
; i
++)
1273 printchar (str
[i
], fputs_unfiltered
, fprintf_unfiltered
, stream
, quoter
);
1277 /* Number of lines per page or UINT_MAX if paging is disabled. */
1278 static unsigned int lines_per_page
;
1280 show_lines_per_page (struct ui_file
*file
, int from_tty
,
1281 struct cmd_list_element
*c
, const char *value
)
1283 fprintf_filtered (file
,
1284 _("Number of lines gdb thinks are in a page is %s.\n"),
1288 /* Number of chars per line or UINT_MAX if line folding is disabled. */
1289 static unsigned int chars_per_line
;
1291 show_chars_per_line (struct ui_file
*file
, int from_tty
,
1292 struct cmd_list_element
*c
, const char *value
)
1294 fprintf_filtered (file
,
1295 _("Number of characters gdb thinks "
1296 "are in a line is %s.\n"),
1300 /* Current count of lines printed on this page, chars on this line. */
1301 static unsigned int lines_printed
, chars_printed
;
1303 /* Buffer and start column of buffered text, for doing smarter word-
1304 wrapping. When someone calls wrap_here(), we start buffering output
1305 that comes through fputs_filtered(). If we see a newline, we just
1306 spit it out and forget about the wrap_here(). If we see another
1307 wrap_here(), we spit it out and remember the newer one. If we see
1308 the end of the line, we spit out a newline, the indent, and then
1309 the buffered output. */
1311 /* Malloc'd buffer with chars_per_line+2 bytes. Contains characters which
1312 are waiting to be output (they have already been counted in chars_printed).
1313 When wrap_buffer[0] is null, the buffer is empty. */
1314 static char *wrap_buffer
;
1316 /* Pointer in wrap_buffer to the next character to fill. */
1317 static char *wrap_pointer
;
1319 /* String to indent by if the wrap occurs. Must not be NULL if wrap_column
1321 static const char *wrap_indent
;
1323 /* Column number on the screen where wrap_buffer begins, or 0 if wrapping
1324 is not in effect. */
1325 static int wrap_column
;
1328 /* Initialize the number of lines per page and chars per line. */
1331 init_page_info (void)
1335 lines_per_page
= UINT_MAX
;
1336 chars_per_line
= UINT_MAX
;
1340 if (!tui_get_command_dimension (&chars_per_line
, &lines_per_page
))
1345 #if defined(__GO32__)
1346 rows
= ScreenRows ();
1347 cols
= ScreenCols ();
1348 lines_per_page
= rows
;
1349 chars_per_line
= cols
;
1351 /* Make sure Readline has initialized its terminal settings. */
1352 rl_reset_terminal (NULL
);
1354 /* Get the screen size from Readline. */
1355 rl_get_screen_size (&rows
, &cols
);
1356 lines_per_page
= rows
;
1357 chars_per_line
= cols
;
1359 /* Readline should have fetched the termcap entry for us.
1360 Only try to use tgetnum function if rl_get_screen_size
1361 did not return a useful value. */
1362 if (((rows
<= 0) && (tgetnum ((char *) "li") < 0))
1363 /* Also disable paging if inside Emacs. $EMACS was used
1364 before Emacs v25.1, $INSIDE_EMACS is used since then. */
1365 || getenv ("EMACS") || getenv ("INSIDE_EMACS"))
1367 /* The number of lines per page is not mentioned in the terminal
1368 description or EMACS evironment variable is set. This probably
1369 means that paging is not useful, so disable paging. */
1370 lines_per_page
= UINT_MAX
;
1373 /* If the output is not a terminal, don't paginate it. */
1374 if (!ui_file_isatty (gdb_stdout
))
1375 lines_per_page
= UINT_MAX
;
1379 /* We handle SIGWINCH ourselves. */
1380 rl_catch_sigwinch
= 0;
1386 /* Return nonzero if filtered printing is initialized. */
1388 filtered_printing_initialized (void)
1390 return wrap_buffer
!= NULL
;
1393 set_batch_flag_and_restore_page_info::set_batch_flag_and_restore_page_info ()
1394 : m_save_lines_per_page (lines_per_page
),
1395 m_save_chars_per_line (chars_per_line
),
1396 m_save_batch_flag (batch_flag
)
1402 set_batch_flag_and_restore_page_info::~set_batch_flag_and_restore_page_info ()
1404 batch_flag
= m_save_batch_flag
;
1405 chars_per_line
= m_save_chars_per_line
;
1406 lines_per_page
= m_save_lines_per_page
;
1412 /* Set the screen size based on LINES_PER_PAGE and CHARS_PER_LINE. */
1415 set_screen_size (void)
1417 int rows
= lines_per_page
;
1418 int cols
= chars_per_line
;
1426 /* Update Readline's idea of the terminal size. */
1427 rl_set_screen_size (rows
, cols
);
1430 /* Reinitialize WRAP_BUFFER according to the current value of
1436 if (chars_per_line
== 0)
1441 wrap_buffer
= (char *) xmalloc (chars_per_line
+ 2);
1442 wrap_buffer
[0] = '\0';
1445 wrap_buffer
= (char *) xrealloc (wrap_buffer
, chars_per_line
+ 2);
1446 wrap_pointer
= wrap_buffer
; /* Start it at the beginning. */
1450 set_width_command (const char *args
, int from_tty
, struct cmd_list_element
*c
)
1457 set_height_command (const char *args
, int from_tty
, struct cmd_list_element
*c
)
1465 set_screen_width_and_height (int width
, int height
)
1467 lines_per_page
= height
;
1468 chars_per_line
= width
;
1474 /* Wait, so the user can read what's on the screen. Prompt the user
1475 to continue by pressing RETURN. 'q' is also provided because
1476 telling users what to do in the prompt is more user-friendly than
1477 expecting them to think of Ctrl-C/SIGINT. */
1480 prompt_for_continue (void)
1482 char cont_prompt
[120];
1483 /* Used to add duration we waited for user to respond to
1484 prompt_for_continue_wait_time. */
1485 using namespace std::chrono
;
1486 steady_clock::time_point prompt_started
= steady_clock::now ();
1488 if (annotation_level
> 1)
1489 printf_unfiltered (("\n\032\032pre-prompt-for-continue\n"));
1491 strcpy (cont_prompt
,
1492 "---Type <return> to continue, or q <return> to quit---");
1493 if (annotation_level
> 1)
1494 strcat (cont_prompt
, "\n\032\032prompt-for-continue\n");
1496 /* We must do this *before* we call gdb_readline_wrapper, else it
1497 will eventually call us -- thinking that we're trying to print
1498 beyond the end of the screen. */
1499 reinitialize_more_filter ();
1501 scoped_input_handler prepare_input
;
1503 /* Call gdb_readline_wrapper, not readline, in order to keep an
1504 event loop running. */
1505 gdb::unique_xmalloc_ptr
<char> ignore (gdb_readline_wrapper (cont_prompt
));
1507 /* Add time spend in this routine to prompt_for_continue_wait_time. */
1508 prompt_for_continue_wait_time
+= steady_clock::now () - prompt_started
;
1510 if (annotation_level
> 1)
1511 printf_unfiltered (("\n\032\032post-prompt-for-continue\n"));
1515 char *p
= ignore
.get ();
1517 while (*p
== ' ' || *p
== '\t')
1520 /* Do not call quit here; there is no possibility of SIGINT. */
1521 throw_quit ("Quit");
1524 /* Now we have to do this again, so that GDB will know that it doesn't
1525 need to save the ---Type <return>--- line at the top of the screen. */
1526 reinitialize_more_filter ();
1528 dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */
1531 /* Initialize timer to keep track of how long we waited for the user. */
1534 reset_prompt_for_continue_wait_time (void)
1536 using namespace std::chrono
;
1538 prompt_for_continue_wait_time
= steady_clock::duration::zero ();
1541 /* Fetch the cumulative time spent in prompt_for_continue. */
1543 std::chrono::steady_clock::duration
1544 get_prompt_for_continue_wait_time ()
1546 return prompt_for_continue_wait_time
;
1549 /* Reinitialize filter; ie. tell it to reset to original values. */
1552 reinitialize_more_filter (void)
1558 /* Indicate that if the next sequence of characters overflows the line,
1559 a newline should be inserted here rather than when it hits the end.
1560 If INDENT is non-null, it is a string to be printed to indent the
1561 wrapped part on the next line. INDENT must remain accessible until
1562 the next call to wrap_here() or until a newline is printed through
1565 If the line is already overfull, we immediately print a newline and
1566 the indentation, and disable further wrapping.
1568 If we don't know the width of lines, but we know the page height,
1569 we must not wrap words, but should still keep track of newlines
1570 that were explicitly printed.
1572 INDENT should not contain tabs, as that will mess up the char count
1573 on the next line. FIXME.
1575 This routine is guaranteed to force out any output which has been
1576 squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be
1577 used to force out output from the wrap_buffer. */
1580 wrap_here (const char *indent
)
1582 /* This should have been allocated, but be paranoid anyway. */
1584 internal_error (__FILE__
, __LINE__
,
1585 _("failed internal consistency check"));
1589 *wrap_pointer
= '\0';
1590 fputs_unfiltered (wrap_buffer
, gdb_stdout
);
1592 wrap_pointer
= wrap_buffer
;
1593 wrap_buffer
[0] = '\0';
1594 if (chars_per_line
== UINT_MAX
) /* No line overflow checking. */
1598 else if (chars_printed
>= chars_per_line
)
1600 puts_filtered ("\n");
1602 puts_filtered (indent
);
1607 wrap_column
= chars_printed
;
1611 wrap_indent
= indent
;
1615 /* Print input string to gdb_stdout, filtered, with wrap,
1616 arranging strings in columns of n chars. String can be
1617 right or left justified in the column. Never prints
1618 trailing spaces. String should never be longer than
1619 width. FIXME: this could be useful for the EXAMINE
1620 command, which currently doesn't tabulate very well. */
1623 puts_filtered_tabular (char *string
, int width
, int right
)
1629 gdb_assert (chars_per_line
> 0);
1630 if (chars_per_line
== UINT_MAX
)
1632 fputs_filtered (string
, gdb_stdout
);
1633 fputs_filtered ("\n", gdb_stdout
);
1637 if (((chars_printed
- 1) / width
+ 2) * width
>= chars_per_line
)
1638 fputs_filtered ("\n", gdb_stdout
);
1640 if (width
>= chars_per_line
)
1641 width
= chars_per_line
- 1;
1643 stringlen
= strlen (string
);
1645 if (chars_printed
> 0)
1646 spaces
= width
- (chars_printed
- 1) % width
- 1;
1648 spaces
+= width
- stringlen
;
1650 spacebuf
= (char *) alloca (spaces
+ 1);
1651 spacebuf
[spaces
] = '\0';
1653 spacebuf
[spaces
] = ' ';
1655 fputs_filtered (spacebuf
, gdb_stdout
);
1656 fputs_filtered (string
, gdb_stdout
);
1660 /* Ensure that whatever gets printed next, using the filtered output
1661 commands, starts at the beginning of the line. I.e. if there is
1662 any pending output for the current line, flush it and start a new
1663 line. Otherwise do nothing. */
1668 if (chars_printed
> 0)
1670 puts_filtered ("\n");
1675 /* Like fputs but if FILTER is true, pause after every screenful.
1677 Regardless of FILTER can wrap at points other than the final
1678 character of a line.
1680 Unlike fputs, fputs_maybe_filtered does not return a value.
1681 It is OK for LINEBUFFER to be NULL, in which case just don't print
1684 Note that a longjmp to top level may occur in this routine (only if
1685 FILTER is true) (since prompt_for_continue may do so) so this
1686 routine should not be called when cleanups are not in place. */
1689 fputs_maybe_filtered (const char *linebuffer
, struct ui_file
*stream
,
1692 const char *lineptr
;
1694 if (linebuffer
== 0)
1697 /* Don't do any filtering if it is disabled. */
1698 if (stream
!= gdb_stdout
1699 || !pagination_enabled
1701 || (lines_per_page
== UINT_MAX
&& chars_per_line
== UINT_MAX
)
1702 || top_level_interpreter () == NULL
1703 || interp_ui_out (top_level_interpreter ())->is_mi_like_p ())
1705 fputs_unfiltered (linebuffer
, stream
);
1709 /* Go through and output each character. Show line extension
1710 when this is necessary; prompt user for new page when this is
1713 lineptr
= linebuffer
;
1716 /* Possible new page. */
1717 if (filter
&& (lines_printed
>= lines_per_page
- 1))
1718 prompt_for_continue ();
1720 while (*lineptr
&& *lineptr
!= '\n')
1722 /* Print a single line. */
1723 if (*lineptr
== '\t')
1726 *wrap_pointer
++ = '\t';
1728 fputc_unfiltered ('\t', stream
);
1729 /* Shifting right by 3 produces the number of tab stops
1730 we have already passed, and then adding one and
1731 shifting left 3 advances to the next tab stop. */
1732 chars_printed
= ((chars_printed
>> 3) + 1) << 3;
1738 *wrap_pointer
++ = *lineptr
;
1740 fputc_unfiltered (*lineptr
, stream
);
1745 if (chars_printed
>= chars_per_line
)
1747 unsigned int save_chars
= chars_printed
;
1751 /* If we aren't actually wrapping, don't output newline --
1752 if chars_per_line is right, we probably just overflowed
1753 anyway; if it's wrong, let us keep going. */
1755 fputc_unfiltered ('\n', stream
);
1757 /* Possible new page. */
1758 if (lines_printed
>= lines_per_page
- 1)
1759 prompt_for_continue ();
1761 /* Now output indentation and wrapped string. */
1764 fputs_unfiltered (wrap_indent
, stream
);
1765 *wrap_pointer
= '\0'; /* Null-terminate saved stuff, */
1766 fputs_unfiltered (wrap_buffer
, stream
); /* and eject it. */
1767 /* FIXME, this strlen is what prevents wrap_indent from
1768 containing tabs. However, if we recurse to print it
1769 and count its chars, we risk trouble if wrap_indent is
1770 longer than (the user settable) chars_per_line.
1771 Note also that this can set chars_printed > chars_per_line
1772 if we are printing a long string. */
1773 chars_printed
= strlen (wrap_indent
)
1774 + (save_chars
- wrap_column
);
1775 wrap_pointer
= wrap_buffer
; /* Reset buffer */
1776 wrap_buffer
[0] = '\0';
1777 wrap_column
= 0; /* And disable fancy wrap */
1782 if (*lineptr
== '\n')
1785 wrap_here ((char *) 0); /* Spit out chars, cancel
1788 fputc_unfiltered ('\n', stream
);
1795 fputs_filtered (const char *linebuffer
, struct ui_file
*stream
)
1797 fputs_maybe_filtered (linebuffer
, stream
, 1);
1801 putchar_unfiltered (int c
)
1805 ui_file_write (gdb_stdout
, &buf
, 1);
1809 /* Write character C to gdb_stdout using GDB's paging mechanism and return C.
1810 May return nonlocally. */
1813 putchar_filtered (int c
)
1815 return fputc_filtered (c
, gdb_stdout
);
1819 fputc_unfiltered (int c
, struct ui_file
*stream
)
1823 ui_file_write (stream
, &buf
, 1);
1828 fputc_filtered (int c
, struct ui_file
*stream
)
1834 fputs_filtered (buf
, stream
);
1838 /* puts_debug is like fputs_unfiltered, except it prints special
1839 characters in printable fashion. */
1842 puts_debug (char *prefix
, char *string
, char *suffix
)
1846 /* Print prefix and suffix after each line. */
1847 static int new_line
= 1;
1848 static int return_p
= 0;
1849 static const char *prev_prefix
= "";
1850 static const char *prev_suffix
= "";
1852 if (*string
== '\n')
1855 /* If the prefix is changing, print the previous suffix, a new line,
1856 and the new prefix. */
1857 if ((return_p
|| (strcmp (prev_prefix
, prefix
) != 0)) && !new_line
)
1859 fputs_unfiltered (prev_suffix
, gdb_stdlog
);
1860 fputs_unfiltered ("\n", gdb_stdlog
);
1861 fputs_unfiltered (prefix
, gdb_stdlog
);
1864 /* Print prefix if we printed a newline during the previous call. */
1868 fputs_unfiltered (prefix
, gdb_stdlog
);
1871 prev_prefix
= prefix
;
1872 prev_suffix
= suffix
;
1874 /* Output characters in a printable format. */
1875 while ((ch
= *string
++) != '\0')
1881 fputc_unfiltered (ch
, gdb_stdlog
);
1884 fprintf_unfiltered (gdb_stdlog
, "\\x%02x", ch
& 0xff);
1888 fputs_unfiltered ("\\\\", gdb_stdlog
);
1891 fputs_unfiltered ("\\b", gdb_stdlog
);
1894 fputs_unfiltered ("\\f", gdb_stdlog
);
1898 fputs_unfiltered ("\\n", gdb_stdlog
);
1901 fputs_unfiltered ("\\r", gdb_stdlog
);
1904 fputs_unfiltered ("\\t", gdb_stdlog
);
1907 fputs_unfiltered ("\\v", gdb_stdlog
);
1911 return_p
= ch
== '\r';
1914 /* Print suffix if we printed a newline. */
1917 fputs_unfiltered (suffix
, gdb_stdlog
);
1918 fputs_unfiltered ("\n", gdb_stdlog
);
1923 /* Print a variable number of ARGS using format FORMAT. If this
1924 information is going to put the amount written (since the last call
1925 to REINITIALIZE_MORE_FILTER or the last page break) over the page size,
1926 call prompt_for_continue to get the users permision to continue.
1928 Unlike fprintf, this function does not return a value.
1930 We implement three variants, vfprintf (takes a vararg list and stream),
1931 fprintf (takes a stream to write on), and printf (the usual).
1933 Note also that a longjmp to top level may occur in this routine
1934 (since prompt_for_continue may do so) so this routine should not be
1935 called when cleanups are not in place. */
1938 vfprintf_maybe_filtered (struct ui_file
*stream
, const char *format
,
1939 va_list args
, int filter
)
1941 std::string linebuffer
= string_vprintf (format
, args
);
1942 fputs_maybe_filtered (linebuffer
.c_str (), stream
, filter
);
1947 vfprintf_filtered (struct ui_file
*stream
, const char *format
, va_list args
)
1949 vfprintf_maybe_filtered (stream
, format
, args
, 1);
1953 vfprintf_unfiltered (struct ui_file
*stream
, const char *format
, va_list args
)
1955 std::string linebuffer
= string_vprintf (format
, args
);
1956 if (debug_timestamp
&& stream
== gdb_stdlog
)
1958 using namespace std::chrono
;
1961 steady_clock::time_point now
= steady_clock::now ();
1962 seconds s
= duration_cast
<seconds
> (now
.time_since_epoch ());
1963 microseconds us
= duration_cast
<microseconds
> (now
.time_since_epoch () - s
);
1965 len
= linebuffer
.size ();
1966 need_nl
= (len
> 0 && linebuffer
[len
- 1] != '\n');
1968 std::string timestamp
= string_printf ("%ld.%06ld %s%s",
1971 linebuffer
.c_str (),
1972 need_nl
? "\n": "");
1973 fputs_unfiltered (timestamp
.c_str (), stream
);
1976 fputs_unfiltered (linebuffer
.c_str (), stream
);
1980 vprintf_filtered (const char *format
, va_list args
)
1982 vfprintf_maybe_filtered (gdb_stdout
, format
, args
, 1);
1986 vprintf_unfiltered (const char *format
, va_list args
)
1988 vfprintf_unfiltered (gdb_stdout
, format
, args
);
1992 fprintf_filtered (struct ui_file
*stream
, const char *format
, ...)
1996 va_start (args
, format
);
1997 vfprintf_filtered (stream
, format
, args
);
2002 fprintf_unfiltered (struct ui_file
*stream
, const char *format
, ...)
2006 va_start (args
, format
);
2007 vfprintf_unfiltered (stream
, format
, args
);
2011 /* Like fprintf_filtered, but prints its result indented.
2012 Called as fprintfi_filtered (spaces, stream, format, ...); */
2015 fprintfi_filtered (int spaces
, struct ui_file
*stream
, const char *format
,
2020 va_start (args
, format
);
2021 print_spaces_filtered (spaces
, stream
);
2023 vfprintf_filtered (stream
, format
, args
);
2029 printf_filtered (const char *format
, ...)
2033 va_start (args
, format
);
2034 vfprintf_filtered (gdb_stdout
, format
, args
);
2040 printf_unfiltered (const char *format
, ...)
2044 va_start (args
, format
);
2045 vfprintf_unfiltered (gdb_stdout
, format
, args
);
2049 /* Like printf_filtered, but prints it's result indented.
2050 Called as printfi_filtered (spaces, format, ...); */
2053 printfi_filtered (int spaces
, const char *format
, ...)
2057 va_start (args
, format
);
2058 print_spaces_filtered (spaces
, gdb_stdout
);
2059 vfprintf_filtered (gdb_stdout
, format
, args
);
2063 /* Easy -- but watch out!
2065 This routine is *not* a replacement for puts()! puts() appends a newline.
2066 This one doesn't, and had better not! */
2069 puts_filtered (const char *string
)
2071 fputs_filtered (string
, gdb_stdout
);
2075 puts_unfiltered (const char *string
)
2077 fputs_unfiltered (string
, gdb_stdout
);
2080 /* Return a pointer to N spaces and a null. The pointer is good
2081 until the next call to here. */
2086 static char *spaces
= 0;
2087 static int max_spaces
= -1;
2093 spaces
= (char *) xmalloc (n
+ 1);
2094 for (t
= spaces
+ n
; t
!= spaces
;)
2100 return spaces
+ max_spaces
- n
;
2103 /* Print N spaces. */
2105 print_spaces_filtered (int n
, struct ui_file
*stream
)
2107 fputs_filtered (n_spaces (n
), stream
);
2110 /* C++/ObjC demangler stuff. */
2112 /* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language
2113 LANG, using demangling args ARG_MODE, and print it filtered to STREAM.
2114 If the name is not mangled, or the language for the name is unknown, or
2115 demangling is off, the name is printed in its "raw" form. */
2118 fprintf_symbol_filtered (struct ui_file
*stream
, const char *name
,
2119 enum language lang
, int arg_mode
)
2125 /* If user wants to see raw output, no problem. */
2128 fputs_filtered (name
, stream
);
2132 demangled
= language_demangle (language_def (lang
), name
, arg_mode
);
2133 fputs_filtered (demangled
? demangled
: name
, stream
);
2134 if (demangled
!= NULL
)
2142 /* True if CH is a character that can be part of a symbol name. I.e.,
2143 either a number, a letter, or a '_'. */
2146 valid_identifier_name_char (int ch
)
2148 return (isalnum (ch
) || ch
== '_');
2151 /* Skip to end of token, or to END, whatever comes first. Input is
2152 assumed to be a C++ operator name. */
2155 cp_skip_operator_token (const char *token
, const char *end
)
2157 const char *p
= token
;
2158 while (p
!= end
&& !isspace (*p
) && *p
!= '(')
2160 if (valid_identifier_name_char (*p
))
2162 while (p
!= end
&& valid_identifier_name_char (*p
))
2168 /* Note, ordered such that among ops that share a prefix,
2169 longer comes first. This is so that the loop below can
2170 bail on first match. */
2171 static const char *ops
[] =
2177 "-=", "--", "->", "-",
2186 "<<=", "<=", "<<", "<",
2187 ">>=", ">=", ">>", ">",
2191 for (const char *op
: ops
)
2193 size_t oplen
= strlen (op
);
2194 size_t lencmp
= std::min
<size_t> (oplen
, end
- p
);
2196 if (strncmp (p
, op
, lencmp
) == 0)
2199 /* Some unidentified character. Return it. */
2207 /* Advance STRING1/STRING2 past whitespace. */
2210 skip_ws (const char *&string1
, const char *&string2
, const char *end_str2
)
2212 while (isspace (*string1
))
2214 while (string2
< end_str2
&& isspace (*string2
))
2218 /* True if STRING points at the start of a C++ operator name. START
2219 is the start of the string that STRING points to, hence when
2220 reading backwards, we must not read any character before START. */
2223 cp_is_operator (const char *string
, const char *start
)
2225 return ((string
== start
2226 || !valid_identifier_name_char (string
[-1]))
2227 && strncmp (string
, CP_OPERATOR_STR
, CP_OPERATOR_LEN
) == 0
2228 && !valid_identifier_name_char (string
[CP_OPERATOR_LEN
]));
2231 /* If *NAME points at an ABI tag, skip it and return true. Otherwise
2232 leave *NAME unmodified and return false. (see GCC's abi_tag
2233 attribute), such names are demangled as e.g.,
2234 "function[abi:cxx11]()". */
2237 skip_abi_tag (const char **name
)
2239 const char *p
= *name
;
2241 if (startswith (p
, "[abi:"))
2245 while (valid_identifier_name_char (*p
))
2261 strncmp_iw_with_mode (const char *string1
, const char *string2
,
2262 size_t string2_len
, strncmp_iw_mode mode
,
2263 enum language language
,
2264 completion_match_for_lcd
*match_for_lcd
)
2266 const char *string1_start
= string1
;
2267 const char *end_str2
= string2
+ string2_len
;
2268 bool skip_spaces
= true;
2269 bool have_colon_op
= (language
== language_cplus
2270 || language
== language_rust
2271 || language
== language_fortran
);
2276 || ((isspace (*string1
) && !valid_identifier_name_char (*string2
))
2277 || (isspace (*string2
) && !valid_identifier_name_char (*string1
))))
2279 skip_ws (string1
, string2
, end_str2
);
2280 skip_spaces
= false;
2283 /* Skip [abi:cxx11] tags in the symbol name if the lookup name
2284 doesn't include them. E.g.:
2286 string1: function[abi:cxx1](int)
2289 string1: function[abi:cxx1](int)
2290 string2: function(int)
2292 string1: Struct[abi:cxx1]::function()
2293 string2: Struct::function()
2295 string1: function(Struct[abi:cxx1], int)
2296 string2: function(Struct, int)
2298 if (string2
== end_str2
2299 || (*string2
!= '[' && !valid_identifier_name_char (*string2
)))
2301 const char *abi_start
= string1
;
2303 /* There can be more than one tag. */
2304 while (*string1
== '[' && skip_abi_tag (&string1
))
2307 if (match_for_lcd
!= NULL
&& abi_start
!= string1
)
2308 match_for_lcd
->mark_ignored_range (abi_start
, string1
);
2310 while (isspace (*string1
))
2314 if (*string1
== '\0' || string2
== end_str2
)
2317 /* Handle the :: operator. */
2318 if (have_colon_op
&& string1
[0] == ':' && string1
[1] == ':')
2320 if (*string2
!= ':')
2326 if (string2
== end_str2
)
2329 if (*string2
!= ':')
2335 while (isspace (*string1
))
2337 while (string2
< end_str2
&& isspace (*string2
))
2342 /* Handle C++ user-defined operators. */
2343 else if (language
== language_cplus
2346 if (cp_is_operator (string1
, string1_start
))
2348 /* An operator name in STRING1. Check STRING2. */
2350 = std::min
<size_t> (CP_OPERATOR_LEN
, end_str2
- string2
);
2351 if (strncmp (string1
, string2
, cmplen
) != 0)
2357 if (string2
!= end_str2
)
2359 /* Check for "operatorX" in STRING2. */
2360 if (valid_identifier_name_char (*string2
))
2363 skip_ws (string1
, string2
, end_str2
);
2366 /* Handle operator(). */
2367 if (*string1
== '(')
2369 if (string2
== end_str2
)
2371 if (mode
== strncmp_iw_mode::NORMAL
)
2375 /* Don't break for the regular return at the
2376 bottom, because "operator" should not
2377 match "operator()", since this open
2378 parentheses is not the parameter list
2380 return *string1
!= '\0';
2384 if (*string1
!= *string2
)
2393 skip_ws (string1
, string2
, end_str2
);
2395 /* Skip to end of token, or to END, whatever comes
2397 const char *end_str1
= string1
+ strlen (string1
);
2398 const char *p1
= cp_skip_operator_token (string1
, end_str1
);
2399 const char *p2
= cp_skip_operator_token (string2
, end_str2
);
2401 cmplen
= std::min (p1
- string1
, p2
- string2
);
2404 if (strncmp (string1
, string2
, cmplen
) != 0)
2409 if (p1
- string1
!= p2
- string2
)
2411 if (strncmp (string1
, string2
, cmplen
) != 0)
2418 if (*string1
== '\0' || string2
== end_str2
)
2420 if (*string1
== '(' || *string2
== '(')
2428 if (case_sensitivity
== case_sensitive_on
&& *string1
!= *string2
)
2430 if (case_sensitivity
== case_sensitive_off
2431 && (tolower ((unsigned char) *string1
)
2432 != tolower ((unsigned char) *string2
)))
2435 /* If we see any non-whitespace, non-identifier-name character
2436 (any of "()<>*&" etc.), then skip spaces the next time
2438 if (!isspace (*string1
) && !valid_identifier_name_char (*string1
))
2445 if (string2
== end_str2
)
2447 if (mode
== strncmp_iw_mode::NORMAL
)
2449 /* Strip abi tag markers from the matched symbol name.
2450 Usually the ABI marker will be found on function name
2451 (automatically added because the function returns an
2452 object marked with an ABI tag). However, it's also
2453 possible to see a marker in one of the function
2454 parameters, for example.
2456 string2 (lookup name):
2459 function(some_struct[abi:cxx11], int)
2461 and for completion LCD computation we want to say that
2463 function(some_struct, int)
2465 if (match_for_lcd
!= NULL
)
2467 while ((string1
= strstr (string1
, "[abi:")) != NULL
)
2469 const char *abi_start
= string1
;
2471 /* There can be more than one tag. */
2472 while (skip_abi_tag (&string1
) && *string1
== '[')
2475 if (abi_start
!= string1
)
2476 match_for_lcd
->mark_ignored_range (abi_start
, string1
);
2483 return (*string1
!= '\0' && *string1
!= '(');
2492 strncmp_iw (const char *string1
, const char *string2
, size_t string2_len
)
2494 return strncmp_iw_with_mode (string1
, string2
, string2_len
,
2495 strncmp_iw_mode::NORMAL
, language_minimal
);
2501 strcmp_iw (const char *string1
, const char *string2
)
2503 return strncmp_iw_with_mode (string1
, string2
, strlen (string2
),
2504 strncmp_iw_mode::MATCH_PARAMS
, language_minimal
);
2507 /* This is like strcmp except that it ignores whitespace and treats
2508 '(' as the first non-NULL character in terms of ordering. Like
2509 strcmp (and unlike strcmp_iw), it returns negative if STRING1 <
2510 STRING2, 0 if STRING2 = STRING2, and positive if STRING1 > STRING2
2511 according to that ordering.
2513 If a list is sorted according to this function and if you want to
2514 find names in the list that match some fixed NAME according to
2515 strcmp_iw(LIST_ELT, NAME), then the place to start looking is right
2516 where this function would put NAME.
2518 This function must be neutral to the CASE_SENSITIVITY setting as the user
2519 may choose it during later lookup. Therefore this function always sorts
2520 primarily case-insensitively and secondarily case-sensitively.
2522 Here are some examples of why using strcmp to sort is a bad idea:
2526 Say your partial symtab contains: "foo<char *>", "goo". Then, if
2527 we try to do a search for "foo<char*>", strcmp will locate this
2528 after "foo<char *>" and before "goo". Then lookup_partial_symbol
2529 will start looking at strings beginning with "goo", and will never
2530 see the correct match of "foo<char *>".
2532 Parenthesis example:
2534 In practice, this is less like to be an issue, but I'll give it a
2535 shot. Let's assume that '$' is a legitimate character to occur in
2536 symbols. (Which may well even be the case on some systems.) Then
2537 say that the partial symbol table contains "foo$" and "foo(int)".
2538 strcmp will put them in this order, since '$' < '('. Now, if the
2539 user searches for "foo", then strcmp will sort "foo" before "foo$".
2540 Then lookup_partial_symbol will notice that strcmp_iw("foo$",
2541 "foo") is false, so it won't proceed to the actual match of
2542 "foo(int)" with "foo". */
2545 strcmp_iw_ordered (const char *string1
, const char *string2
)
2547 const char *saved_string1
= string1
, *saved_string2
= string2
;
2548 enum case_sensitivity case_pass
= case_sensitive_off
;
2552 /* C1 and C2 are valid only if *string1 != '\0' && *string2 != '\0'.
2553 Provide stub characters if we are already at the end of one of the
2555 char c1
= 'X', c2
= 'X';
2557 while (*string1
!= '\0' && *string2
!= '\0')
2559 while (isspace (*string1
))
2561 while (isspace (*string2
))
2566 case case_sensitive_off
:
2567 c1
= tolower ((unsigned char) *string1
);
2568 c2
= tolower ((unsigned char) *string2
);
2570 case case_sensitive_on
:
2578 if (*string1
!= '\0')
2587 /* Characters are non-equal unless they're both '\0'; we want to
2588 make sure we get the comparison right according to our
2589 comparison in the cases where one of them is '\0' or '('. */
2591 if (*string2
== '\0')
2596 if (*string2
== '\0')
2601 if (*string2
== '\0' || *string2
== '(')
2610 if (case_pass
== case_sensitive_on
)
2613 /* Otherwise the strings were equal in case insensitive way, make
2614 a more fine grained comparison in a case sensitive way. */
2616 case_pass
= case_sensitive_on
;
2617 string1
= saved_string1
;
2618 string2
= saved_string2
;
2622 /* A simple comparison function with opposite semantics to strcmp. */
2625 streq (const char *lhs
, const char *rhs
)
2627 return !strcmp (lhs
, rhs
);
2633 ** Answer whether string_to_compare is a full or partial match to
2634 ** template_string. The partial match must be in sequence starting
2638 subset_compare (const char *string_to_compare
, const char *template_string
)
2642 if (template_string
!= (char *) NULL
&& string_to_compare
!= (char *) NULL
2643 && strlen (string_to_compare
) <= strlen (template_string
))
2645 (startswith (template_string
, string_to_compare
));
2652 show_debug_timestamp (struct ui_file
*file
, int from_tty
,
2653 struct cmd_list_element
*c
, const char *value
)
2655 fprintf_filtered (file
, _("Timestamping debugging messages is %s.\n"),
2661 initialize_utils (void)
2663 add_setshow_uinteger_cmd ("width", class_support
, &chars_per_line
, _("\
2664 Set number of characters where GDB should wrap lines of its output."), _("\
2665 Show number of characters where GDB should wrap lines of its output."), _("\
2666 This affects where GDB wraps its output to fit the screen width.\n\
2667 Setting this to \"unlimited\" or zero prevents GDB from wrapping its output."),
2669 show_chars_per_line
,
2670 &setlist
, &showlist
);
2672 add_setshow_uinteger_cmd ("height", class_support
, &lines_per_page
, _("\
2673 Set number of lines in a page for GDB output pagination."), _("\
2674 Show number of lines in a page for GDB output pagination."), _("\
2675 This affects the number of lines after which GDB will pause\n\
2676 its output and ask you whether to continue.\n\
2677 Setting this to \"unlimited\" or zero causes GDB never pause during output."),
2679 show_lines_per_page
,
2680 &setlist
, &showlist
);
2682 add_setshow_boolean_cmd ("pagination", class_support
,
2683 &pagination_enabled
, _("\
2684 Set state of GDB output pagination."), _("\
2685 Show state of GDB output pagination."), _("\
2686 When pagination is ON, GDB pauses at end of each screenful of\n\
2687 its output and asks you whether to continue.\n\
2688 Turning pagination off is an alternative to \"set height unlimited\"."),
2690 show_pagination_enabled
,
2691 &setlist
, &showlist
);
2693 add_setshow_boolean_cmd ("sevenbit-strings", class_support
,
2694 &sevenbit_strings
, _("\
2695 Set printing of 8-bit characters in strings as \\nnn."), _("\
2696 Show printing of 8-bit characters in strings as \\nnn."), NULL
,
2698 show_sevenbit_strings
,
2699 &setprintlist
, &showprintlist
);
2701 add_setshow_boolean_cmd ("timestamp", class_maintenance
,
2702 &debug_timestamp
, _("\
2703 Set timestamping of debugging messages."), _("\
2704 Show timestamping of debugging messages."), _("\
2705 When set, debugging messages will be marked with seconds and microseconds."),
2707 show_debug_timestamp
,
2708 &setdebuglist
, &showdebuglist
);
2714 address_significant (gdbarch
*gdbarch
, CORE_ADDR addr
)
2716 /* Truncate address to the significant bits of a target address,
2717 avoiding shifts larger or equal than the width of a CORE_ADDR.
2718 The local variable ADDR_BIT stops the compiler reporting a shift
2719 overflow when it won't occur. */
2720 int addr_bit
= gdbarch_significant_addr_bit (gdbarch
);
2722 if (addr_bit
< (sizeof (CORE_ADDR
) * HOST_CHAR_BIT
))
2723 addr
&= ((CORE_ADDR
) 1 << addr_bit
) - 1;
2729 paddress (struct gdbarch
*gdbarch
, CORE_ADDR addr
)
2731 /* Truncate address to the size of a target address, avoiding shifts
2732 larger or equal than the width of a CORE_ADDR. The local
2733 variable ADDR_BIT stops the compiler reporting a shift overflow
2734 when it won't occur. */
2735 /* NOTE: This assumes that the significant address information is
2736 kept in the least significant bits of ADDR - the upper bits were
2737 either zero or sign extended. Should gdbarch_address_to_pointer or
2738 some ADDRESS_TO_PRINTABLE() be used to do the conversion? */
2740 int addr_bit
= gdbarch_addr_bit (gdbarch
);
2742 if (addr_bit
< (sizeof (CORE_ADDR
) * HOST_CHAR_BIT
))
2743 addr
&= ((CORE_ADDR
) 1 << addr_bit
) - 1;
2744 return hex_string (addr
);
2747 /* This function is described in "defs.h". */
2750 print_core_address (struct gdbarch
*gdbarch
, CORE_ADDR address
)
2752 int addr_bit
= gdbarch_addr_bit (gdbarch
);
2754 if (addr_bit
< (sizeof (CORE_ADDR
) * HOST_CHAR_BIT
))
2755 address
&= ((CORE_ADDR
) 1 << addr_bit
) - 1;
2757 /* FIXME: cagney/2002-05-03: Need local_address_string() function
2758 that returns the language localized string formatted to a width
2759 based on gdbarch_addr_bit. */
2761 return hex_string_custom (address
, 8);
2763 return hex_string_custom (address
, 16);
2766 /* Callback hash_f for htab_create_alloc or htab_create_alloc_ex. */
2769 core_addr_hash (const void *ap
)
2771 const CORE_ADDR
*addrp
= (const CORE_ADDR
*) ap
;
2776 /* Callback eq_f for htab_create_alloc or htab_create_alloc_ex. */
2779 core_addr_eq (const void *ap
, const void *bp
)
2781 const CORE_ADDR
*addr_ap
= (const CORE_ADDR
*) ap
;
2782 const CORE_ADDR
*addr_bp
= (const CORE_ADDR
*) bp
;
2784 return *addr_ap
== *addr_bp
;
2787 /* Convert a string back into a CORE_ADDR. */
2789 string_to_core_addr (const char *my_string
)
2793 if (my_string
[0] == '0' && tolower (my_string
[1]) == 'x')
2795 /* Assume that it is in hex. */
2798 for (i
= 2; my_string
[i
] != '\0'; i
++)
2800 if (isdigit (my_string
[i
]))
2801 addr
= (my_string
[i
] - '0') + (addr
* 16);
2802 else if (isxdigit (my_string
[i
]))
2803 addr
= (tolower (my_string
[i
]) - 'a' + 0xa) + (addr
* 16);
2805 error (_("invalid hex \"%s\""), my_string
);
2810 /* Assume that it is in decimal. */
2813 for (i
= 0; my_string
[i
] != '\0'; i
++)
2815 if (isdigit (my_string
[i
]))
2816 addr
= (my_string
[i
] - '0') + (addr
* 10);
2818 error (_("invalid decimal \"%s\""), my_string
);
2828 gdb_realpath_check_trailer (const char *input
, const char *trailer
)
2830 gdb::unique_xmalloc_ptr
<char> result
= gdb_realpath (input
);
2832 size_t len
= strlen (result
.get ());
2833 size_t trail_len
= strlen (trailer
);
2835 SELF_CHECK (len
>= trail_len
2836 && strcmp (result
.get () + len
- trail_len
, trailer
) == 0);
2840 gdb_realpath_tests ()
2842 /* A file which contains a directory prefix. */
2843 gdb_realpath_check_trailer ("./xfullpath.exp", "/xfullpath.exp");
2844 /* A file which contains a directory prefix. */
2845 gdb_realpath_check_trailer ("../../defs.h", "/defs.h");
2846 /* A one-character filename. */
2847 gdb_realpath_check_trailer ("./a", "/a");
2848 /* A file in the root directory. */
2849 gdb_realpath_check_trailer ("/root_file_which_should_exist",
2850 "/root_file_which_should_exist");
2851 /* A file which does not have a directory prefix. */
2852 gdb_realpath_check_trailer ("xfullpath.exp", "xfullpath.exp");
2853 /* A one-char filename without any directory prefix. */
2854 gdb_realpath_check_trailer ("a", "a");
2855 /* An empty filename. */
2856 gdb_realpath_check_trailer ("", "");
2859 #endif /* GDB_SELF_TEST */
2862 align_up (ULONGEST v
, int n
)
2864 /* Check that N is really a power of two. */
2865 gdb_assert (n
&& (n
& (n
-1)) == 0);
2866 return (v
+ n
- 1) & -n
;
2870 align_down (ULONGEST v
, int n
)
2872 /* Check that N is really a power of two. */
2873 gdb_assert (n
&& (n
& (n
-1)) == 0);
2877 /* Allocation function for the libiberty hash table which uses an
2878 obstack. The obstack is passed as DATA. */
2881 hashtab_obstack_allocate (void *data
, size_t size
, size_t count
)
2883 size_t total
= size
* count
;
2884 void *ptr
= obstack_alloc ((struct obstack
*) data
, total
);
2886 memset (ptr
, 0, total
);
2890 /* Trivial deallocation function for the libiberty splay tree and hash
2891 table - don't deallocate anything. Rely on later deletion of the
2892 obstack. DATA will be the obstack, although it is not needed
2896 dummy_obstack_deallocate (void *object
, void *data
)
2901 /* Simple, portable version of dirname that does not modify its
2905 ldirname (const char *filename
)
2907 std::string dirname
;
2908 const char *base
= lbasename (filename
);
2910 while (base
> filename
&& IS_DIR_SEPARATOR (base
[-1]))
2913 if (base
== filename
)
2916 dirname
= std::string (filename
, base
- filename
);
2918 /* On DOS based file systems, convert "d:foo" to "d:.", so that we
2919 create "d:./bar" later instead of the (different) "d:/bar". */
2920 if (base
- filename
== 2 && IS_ABSOLUTE_PATH (base
)
2921 && !IS_DIR_SEPARATOR (filename
[0]))
2922 dirname
[base
++ - filename
] = '.';
2930 gdb_argv::reset (const char *s
)
2932 char **argv
= buildargv (s
);
2934 if (s
!= NULL
&& argv
== NULL
)
2942 compare_positive_ints (const void *ap
, const void *bp
)
2944 /* Because we know we're comparing two ints which are positive,
2945 there's no danger of overflow here. */
2946 return * (int *) ap
- * (int *) bp
;
2949 /* String compare function for qsort. */
2952 compare_strings (const void *arg1
, const void *arg2
)
2954 const char **s1
= (const char **) arg1
;
2955 const char **s2
= (const char **) arg2
;
2957 return strcmp (*s1
, *s2
);
2960 #define AMBIGUOUS_MESS1 ".\nMatching formats:"
2961 #define AMBIGUOUS_MESS2 \
2962 ".\nUse \"set gnutarget format-name\" to specify the format."
2965 gdb_bfd_errmsg (bfd_error_type error_tag
, char **matching
)
2971 /* Check if errmsg just need simple return. */
2972 if (error_tag
!= bfd_error_file_ambiguously_recognized
|| matching
== NULL
)
2973 return bfd_errmsg (error_tag
);
2975 ret_len
= strlen (bfd_errmsg (error_tag
)) + strlen (AMBIGUOUS_MESS1
)
2976 + strlen (AMBIGUOUS_MESS2
);
2977 for (p
= matching
; *p
; p
++)
2978 ret_len
+= strlen (*p
) + 1;
2979 ret
= (char *) xmalloc (ret_len
+ 1);
2981 make_cleanup (xfree
, ret
);
2983 strcpy (retp
, bfd_errmsg (error_tag
));
2984 retp
+= strlen (retp
);
2986 strcpy (retp
, AMBIGUOUS_MESS1
);
2987 retp
+= strlen (retp
);
2989 for (p
= matching
; *p
; p
++)
2991 sprintf (retp
, " %s", *p
);
2992 retp
+= strlen (retp
);
2996 strcpy (retp
, AMBIGUOUS_MESS2
);
3001 /* Return ARGS parsed as a valid pid, or throw an error. */
3004 parse_pid_to_attach (const char *args
)
3010 error_no_arg (_("process-id to attach"));
3012 dummy
= (char *) args
;
3013 pid
= strtoul (args
, &dummy
, 0);
3014 /* Some targets don't set errno on errors, grrr! */
3015 if ((pid
== 0 && dummy
== args
) || dummy
!= &args
[strlen (args
)])
3016 error (_("Illegal process-id: %s."), args
);
3021 /* Helper for make_bpstat_clear_actions_cleanup. */
3024 do_bpstat_clear_actions_cleanup (void *unused
)
3026 bpstat_clear_actions ();
3029 /* Call bpstat_clear_actions for the case an exception is throw. You should
3030 discard_cleanups if no exception is caught. */
3033 make_bpstat_clear_actions_cleanup (void)
3035 return make_cleanup (do_bpstat_clear_actions_cleanup
, NULL
);
3038 /* Substitute all occurences of string FROM by string TO in *STRINGP. *STRINGP
3039 must come from xrealloc-compatible allocator and it may be updated. FROM
3040 needs to be delimited by IS_DIR_SEPARATOR or DIRNAME_SEPARATOR (or be
3041 located at the start or end of *STRINGP. */
3044 substitute_path_component (char **stringp
, const char *from
, const char *to
)
3046 char *string
= *stringp
, *s
;
3047 const size_t from_len
= strlen (from
);
3048 const size_t to_len
= strlen (to
);
3052 s
= strstr (s
, from
);
3056 if ((s
== string
|| IS_DIR_SEPARATOR (s
[-1])
3057 || s
[-1] == DIRNAME_SEPARATOR
)
3058 && (s
[from_len
] == '\0' || IS_DIR_SEPARATOR (s
[from_len
])
3059 || s
[from_len
] == DIRNAME_SEPARATOR
))
3064 = (char *) xrealloc (string
, (strlen (string
) + to_len
+ 1));
3066 /* Relocate the current S pointer. */
3067 s
= s
- string
+ string_new
;
3068 string
= string_new
;
3070 /* Replace from by to. */
3071 memmove (&s
[to_len
], &s
[from_len
], strlen (&s
[from_len
]) + 1);
3072 memcpy (s
, to
, to_len
);
3087 /* SIGALRM handler for waitpid_with_timeout. */
3090 sigalrm_handler (int signo
)
3092 /* Nothing to do. */
3097 /* Wrapper to wait for child PID to die with TIMEOUT.
3098 TIMEOUT is the time to stop waiting in seconds.
3099 If TIMEOUT is zero, pass WNOHANG to waitpid.
3100 Returns PID if it was successfully waited for, otherwise -1.
3102 Timeouts are currently implemented with alarm and SIGALRM.
3103 If the host does not support them, this waits "forever".
3104 It would be odd though for a host to have waitpid and not SIGALRM. */
3107 wait_to_die_with_timeout (pid_t pid
, int *status
, int timeout
)
3109 pid_t waitpid_result
;
3111 gdb_assert (pid
> 0);
3112 gdb_assert (timeout
>= 0);
3117 #if defined (HAVE_SIGACTION) && defined (SA_RESTART)
3118 struct sigaction sa
, old_sa
;
3120 sa
.sa_handler
= sigalrm_handler
;
3121 sigemptyset (&sa
.sa_mask
);
3123 sigaction (SIGALRM
, &sa
, &old_sa
);
3127 ofunc
= signal (SIGALRM
, sigalrm_handler
);
3133 waitpid_result
= waitpid (pid
, status
, 0);
3137 #if defined (HAVE_SIGACTION) && defined (SA_RESTART)
3138 sigaction (SIGALRM
, &old_sa
, NULL
);
3140 signal (SIGALRM
, ofunc
);
3145 waitpid_result
= waitpid (pid
, status
, WNOHANG
);
3147 if (waitpid_result
== pid
)
3153 #endif /* HAVE_WAITPID */
3155 /* Provide fnmatch compatible function for FNM_FILE_NAME matching of host files.
3156 Both FNM_FILE_NAME and FNM_NOESCAPE must be set in FLAGS.
3158 It handles correctly HAVE_DOS_BASED_FILE_SYSTEM and
3159 HAVE_CASE_INSENSITIVE_FILE_SYSTEM. */
3162 gdb_filename_fnmatch (const char *pattern
, const char *string
, int flags
)
3164 gdb_assert ((flags
& FNM_FILE_NAME
) != 0);
3166 /* It is unclear how '\' escaping vs. directory separator should coexist. */
3167 gdb_assert ((flags
& FNM_NOESCAPE
) != 0);
3169 #ifdef HAVE_DOS_BASED_FILE_SYSTEM
3171 char *pattern_slash
, *string_slash
;
3173 /* Replace '\' by '/' in both strings. */
3175 pattern_slash
= (char *) alloca (strlen (pattern
) + 1);
3176 strcpy (pattern_slash
, pattern
);
3177 pattern
= pattern_slash
;
3178 for (; *pattern_slash
!= 0; pattern_slash
++)
3179 if (IS_DIR_SEPARATOR (*pattern_slash
))
3180 *pattern_slash
= '/';
3182 string_slash
= (char *) alloca (strlen (string
) + 1);
3183 strcpy (string_slash
, string
);
3184 string
= string_slash
;
3185 for (; *string_slash
!= 0; string_slash
++)
3186 if (IS_DIR_SEPARATOR (*string_slash
))
3187 *string_slash
= '/';
3189 #endif /* HAVE_DOS_BASED_FILE_SYSTEM */
3191 #ifdef HAVE_CASE_INSENSITIVE_FILE_SYSTEM
3192 flags
|= FNM_CASEFOLD
;
3193 #endif /* HAVE_CASE_INSENSITIVE_FILE_SYSTEM */
3195 return fnmatch (pattern
, string
, flags
);
3198 /* Return the number of path elements in PATH.
3206 count_path_elements (const char *path
)
3209 const char *p
= path
;
3211 if (HAS_DRIVE_SPEC (p
))
3213 p
= STRIP_DRIVE_SPEC (p
);
3219 if (IS_DIR_SEPARATOR (*p
))
3224 /* Backup one if last character is /, unless it's the only one. */
3225 if (p
> path
+ 1 && IS_DIR_SEPARATOR (p
[-1]))
3228 /* Add one for the file name, if present. */
3229 if (p
> path
&& !IS_DIR_SEPARATOR (p
[-1]))
3235 /* Remove N leading path elements from PATH.
3236 N must be non-negative.
3237 If PATH has more than N path elements then return NULL.
3238 If PATH has exactly N path elements then return "".
3239 See count_path_elements for a description of how we do the counting. */
3242 strip_leading_path_elements (const char *path
, int n
)
3245 const char *p
= path
;
3247 gdb_assert (n
>= 0);
3252 if (HAS_DRIVE_SPEC (p
))
3254 p
= STRIP_DRIVE_SPEC (p
);
3260 while (*p
!= '\0' && !IS_DIR_SEPARATOR (*p
))
3276 _initialize_utils (void)
3278 add_internal_problem_command (&internal_error_problem
);
3279 add_internal_problem_command (&internal_warning_problem
);
3280 add_internal_problem_command (&demangler_warning_problem
);
3283 selftests::register_test ("gdb_realpath", gdb_realpath_tests
);