mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-03 04:12:10 +08:00
61012eef84
This commit introduces a new inline common function "startswith" which takes two string arguments and returns nonzero if the first string starts with the second. It also updates the 295 places where this logic was written out longhand to use the new function. gdb/ChangeLog: * common/common-utils.h (startswith): New inline function. All places where this logic was used updated to use the above.
3500 lines
88 KiB
C
3500 lines
88 KiB
C
/* General utility routines for GDB, the GNU debugger.
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Copyright (C) 1986-2015 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "dyn-string.h"
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#include <ctype.h>
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#include "gdb_wait.h"
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#include "event-top.h"
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#include "gdbthread.h"
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#include "fnmatch.h"
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#include "gdb_bfd.h"
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#ifdef HAVE_SYS_RESOURCE_H
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#include <sys/resource.h>
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#endif /* HAVE_SYS_RESOURCE_H */
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#ifdef TUI
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#include "tui/tui.h" /* For tui_get_command_dimension. */
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#endif
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#ifdef __GO32__
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#include <pc.h>
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#endif
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#include <signal.h>
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#include "timeval-utils.h"
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#include "gdbcmd.h"
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#include "serial.h"
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#include "bfd.h"
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#include "target.h"
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#include "gdb-demangle.h"
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#include "expression.h"
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#include "language.h"
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#include "charset.h"
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#include "annotate.h"
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#include "filenames.h"
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#include "symfile.h"
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#include "gdb_obstack.h"
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#include "gdbcore.h"
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#include "top.h"
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#include "main.h"
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#include "solist.h"
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#include "inferior.h" /* for signed_pointer_to_address */
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#include "gdb_curses.h"
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#include "readline/readline.h"
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#include <sys/time.h>
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#include <time.h>
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#include "gdb_usleep.h"
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#include "interps.h"
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#include "gdb_regex.h"
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#if !HAVE_DECL_MALLOC
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extern PTR malloc (); /* ARI: PTR */
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#endif
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#if !HAVE_DECL_REALLOC
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extern PTR realloc (); /* ARI: PTR */
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#endif
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#if !HAVE_DECL_FREE
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extern void free ();
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#endif
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void (*deprecated_error_begin_hook) (void);
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/* Prototypes for local functions */
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static void vfprintf_maybe_filtered (struct ui_file *, const char *,
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va_list, int) ATTRIBUTE_PRINTF (2, 0);
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static void fputs_maybe_filtered (const char *, struct ui_file *, int);
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static void prompt_for_continue (void);
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static void set_screen_size (void);
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static void set_width (void);
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/* Time spent in prompt_for_continue in the currently executing command
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waiting for user to respond.
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Initialized in make_command_stats_cleanup.
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Modified in prompt_for_continue and defaulted_query.
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Used in report_command_stats. */
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static struct timeval prompt_for_continue_wait_time;
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/* A flag indicating whether to timestamp debugging messages. */
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static int debug_timestamp = 0;
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/* Nonzero if we have job control. */
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int job_control;
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/* Nonzero means quit immediately if Control-C is typed now, rather
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than waiting until QUIT is executed. Be careful in setting this;
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code which executes with immediate_quit set has to be very careful
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||
about being able to deal with being interrupted at any time. It is
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||
almost always better to use QUIT; the only exception I can think of
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||
is being able to quit out of a system call (using EINTR loses if
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the SIGINT happens between the previous QUIT and the system call).
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To immediately quit in the case in which a SIGINT happens between
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the previous QUIT and setting immediate_quit (desirable anytime we
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expect to block), call QUIT after setting immediate_quit. */
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int immediate_quit;
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/* Nonzero means that strings with character values >0x7F should be printed
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as octal escapes. Zero means just print the value (e.g. it's an
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international character, and the terminal or window can cope.) */
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int sevenbit_strings = 0;
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static void
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show_sevenbit_strings (struct ui_file *file, int from_tty,
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struct cmd_list_element *c, const char *value)
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{
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fprintf_filtered (file, _("Printing of 8-bit characters "
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"in strings as \\nnn is %s.\n"),
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value);
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}
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/* String to be printed before warning messages, if any. */
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char *warning_pre_print = "\nwarning: ";
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int pagination_enabled = 1;
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static void
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show_pagination_enabled (struct ui_file *file, int from_tty,
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struct cmd_list_element *c, const char *value)
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{
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fprintf_filtered (file, _("State of pagination is %s.\n"), value);
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}
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/* Cleanup utilities.
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These are not defined in cleanups.c (nor declared in cleanups.h)
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because while they use the "cleanup API" they are not part of the
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"cleanup API". */
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static void
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do_freeargv (void *arg)
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{
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freeargv ((char **) arg);
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}
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struct cleanup *
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make_cleanup_freeargv (char **arg)
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{
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return make_cleanup (do_freeargv, arg);
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}
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static void
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do_dyn_string_delete (void *arg)
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{
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dyn_string_delete ((dyn_string_t) arg);
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}
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struct cleanup *
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make_cleanup_dyn_string_delete (dyn_string_t arg)
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{
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return make_cleanup (do_dyn_string_delete, arg);
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}
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static void
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do_bfd_close_cleanup (void *arg)
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{
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gdb_bfd_unref (arg);
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}
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struct cleanup *
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make_cleanup_bfd_unref (bfd *abfd)
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{
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return make_cleanup (do_bfd_close_cleanup, abfd);
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}
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static void
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do_close_cleanup (void *arg)
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{
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int *fd = arg;
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close (*fd);
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}
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struct cleanup *
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make_cleanup_close (int fd)
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{
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int *saved_fd = xmalloc (sizeof (fd));
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*saved_fd = fd;
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return make_cleanup_dtor (do_close_cleanup, saved_fd, xfree);
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}
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/* Helper function which does the work for make_cleanup_fclose. */
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static void
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do_fclose_cleanup (void *arg)
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{
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FILE *file = arg;
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fclose (file);
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}
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/* Return a new cleanup that closes FILE. */
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struct cleanup *
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make_cleanup_fclose (FILE *file)
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{
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return make_cleanup (do_fclose_cleanup, file);
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}
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/* Helper function which does the work for make_cleanup_obstack_free. */
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static void
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do_obstack_free (void *arg)
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{
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struct obstack *ob = arg;
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obstack_free (ob, NULL);
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}
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/* Return a new cleanup that frees OBSTACK. */
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struct cleanup *
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make_cleanup_obstack_free (struct obstack *obstack)
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{
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return make_cleanup (do_obstack_free, obstack);
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}
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static void
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do_ui_file_delete (void *arg)
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{
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ui_file_delete (arg);
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}
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struct cleanup *
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make_cleanup_ui_file_delete (struct ui_file *arg)
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{
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return make_cleanup (do_ui_file_delete, arg);
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}
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/* Helper function for make_cleanup_ui_out_redirect_pop. */
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static void
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do_ui_out_redirect_pop (void *arg)
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{
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struct ui_out *uiout = arg;
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if (ui_out_redirect (uiout, NULL) < 0)
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warning (_("Cannot restore redirection of the current output protocol"));
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}
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/* Return a new cleanup that pops the last redirection by ui_out_redirect
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with NULL parameter. */
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struct cleanup *
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make_cleanup_ui_out_redirect_pop (struct ui_out *uiout)
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{
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return make_cleanup (do_ui_out_redirect_pop, uiout);
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}
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static void
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do_free_section_addr_info (void *arg)
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{
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free_section_addr_info (arg);
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}
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struct cleanup *
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make_cleanup_free_section_addr_info (struct section_addr_info *addrs)
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{
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return make_cleanup (do_free_section_addr_info, addrs);
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}
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struct restore_integer_closure
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{
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int *variable;
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int value;
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};
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static void
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restore_integer (void *p)
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{
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struct restore_integer_closure *closure = p;
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*(closure->variable) = closure->value;
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}
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/* Remember the current value of *VARIABLE and make it restored when
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the cleanup is run. */
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struct cleanup *
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make_cleanup_restore_integer (int *variable)
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{
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struct restore_integer_closure *c =
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xmalloc (sizeof (struct restore_integer_closure));
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c->variable = variable;
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c->value = *variable;
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return make_cleanup_dtor (restore_integer, (void *) c, xfree);
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}
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/* Remember the current value of *VARIABLE and make it restored when
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the cleanup is run. */
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struct cleanup *
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make_cleanup_restore_uinteger (unsigned int *variable)
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{
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return make_cleanup_restore_integer ((int *) variable);
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}
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/* Helper for make_cleanup_unpush_target. */
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static void
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do_unpush_target (void *arg)
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{
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struct target_ops *ops = arg;
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unpush_target (ops);
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}
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/* Return a new cleanup that unpushes OPS. */
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struct cleanup *
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make_cleanup_unpush_target (struct target_ops *ops)
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{
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return make_cleanup (do_unpush_target, ops);
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}
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/* Helper for make_cleanup_htab_delete compile time checking the types. */
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static void
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do_htab_delete_cleanup (void *htab_voidp)
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{
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htab_t htab = htab_voidp;
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htab_delete (htab);
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}
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/* Return a new cleanup that deletes HTAB. */
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struct cleanup *
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make_cleanup_htab_delete (htab_t htab)
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{
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return make_cleanup (do_htab_delete_cleanup, htab);
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}
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struct restore_ui_file_closure
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{
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struct ui_file **variable;
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struct ui_file *value;
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};
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static void
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do_restore_ui_file (void *p)
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{
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struct restore_ui_file_closure *closure = p;
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*(closure->variable) = closure->value;
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}
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/* Remember the current value of *VARIABLE and make it restored when
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the cleanup is run. */
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struct cleanup *
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make_cleanup_restore_ui_file (struct ui_file **variable)
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{
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struct restore_ui_file_closure *c = XNEW (struct restore_ui_file_closure);
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c->variable = variable;
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c->value = *variable;
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return make_cleanup_dtor (do_restore_ui_file, (void *) c, xfree);
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}
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/* Helper for make_cleanup_value_free_to_mark. */
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static void
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do_value_free_to_mark (void *value)
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{
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value_free_to_mark ((struct value *) value);
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}
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/* Free all values allocated since MARK was obtained by value_mark
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(except for those released) when the cleanup is run. */
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struct cleanup *
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make_cleanup_value_free_to_mark (struct value *mark)
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{
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return make_cleanup (do_value_free_to_mark, mark);
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}
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/* Helper for make_cleanup_value_free. */
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static void
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do_value_free (void *value)
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{
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value_free (value);
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}
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/* Free VALUE. */
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struct cleanup *
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make_cleanup_value_free (struct value *value)
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{
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return make_cleanup (do_value_free, value);
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}
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/* Helper for make_cleanup_free_so. */
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static void
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do_free_so (void *arg)
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{
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struct so_list *so = arg;
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free_so (so);
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}
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/* Make cleanup handler calling free_so for SO. */
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struct cleanup *
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make_cleanup_free_so (struct so_list *so)
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{
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return make_cleanup (do_free_so, so);
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}
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/* Helper for make_cleanup_restore_current_language. */
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static void
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do_restore_current_language (void *p)
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{
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enum language saved_lang = (uintptr_t) p;
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set_language (saved_lang);
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}
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/* Remember the current value of CURRENT_LANGUAGE and make it restored when
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the cleanup is run. */
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struct cleanup *
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make_cleanup_restore_current_language (void)
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{
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enum language saved_lang = current_language->la_language;
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return make_cleanup (do_restore_current_language,
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(void *) (uintptr_t) saved_lang);
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}
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/* Helper function for make_cleanup_clear_parser_state. */
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static void
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do_clear_parser_state (void *ptr)
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{
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struct parser_state **p = (struct parser_state **) ptr;
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*p = NULL;
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}
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/* Clean (i.e., set to NULL) the parser state variable P. */
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struct cleanup *
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make_cleanup_clear_parser_state (struct parser_state **p)
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{
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return make_cleanup (do_clear_parser_state, (void *) p);
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}
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|
||
/* This function is useful for cleanups.
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||
Do
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||
|
||
foo = xmalloc (...);
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old_chain = make_cleanup (free_current_contents, &foo);
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||
|
||
to arrange to free the object thus allocated. */
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||
void
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free_current_contents (void *ptr)
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||
{
|
||
void **location = ptr;
|
||
|
||
if (location == NULL)
|
||
internal_error (__FILE__, __LINE__,
|
||
_("free_current_contents: NULL pointer"));
|
||
if (*location != NULL)
|
||
{
|
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xfree (*location);
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||
*location = NULL;
|
||
}
|
||
}
|
||
|
||
|
||
|
||
/* Print a warning message. The first argument STRING is the warning
|
||
message, used as an fprintf format string, the second is the
|
||
va_list of arguments for that string. A warning is unfiltered (not
|
||
paginated) so that the user does not need to page through each
|
||
screen full of warnings when there are lots of them. */
|
||
|
||
void
|
||
vwarning (const char *string, va_list args)
|
||
{
|
||
if (deprecated_warning_hook)
|
||
(*deprecated_warning_hook) (string, args);
|
||
else
|
||
{
|
||
if (target_supports_terminal_ours ())
|
||
target_terminal_ours ();
|
||
if (filtered_printing_initialized ())
|
||
wrap_here (""); /* Force out any buffered output. */
|
||
gdb_flush (gdb_stdout);
|
||
if (warning_pre_print)
|
||
fputs_unfiltered (warning_pre_print, gdb_stderr);
|
||
vfprintf_unfiltered (gdb_stderr, string, args);
|
||
fprintf_unfiltered (gdb_stderr, "\n");
|
||
}
|
||
}
|
||
|
||
/* Print an error message and return to command level.
|
||
The first argument STRING is the error message, used as a fprintf string,
|
||
and the remaining args are passed as arguments to it. */
|
||
|
||
void
|
||
verror (const char *string, va_list args)
|
||
{
|
||
throw_verror (GENERIC_ERROR, string, args);
|
||
}
|
||
|
||
void
|
||
error_stream (struct ui_file *stream)
|
||
{
|
||
char *message = ui_file_xstrdup (stream, NULL);
|
||
|
||
make_cleanup (xfree, message);
|
||
error (("%s"), message);
|
||
}
|
||
|
||
/* Emit a message and abort. */
|
||
|
||
static void ATTRIBUTE_NORETURN
|
||
abort_with_message (const char *msg)
|
||
{
|
||
if (gdb_stderr == NULL)
|
||
fputs (msg, stderr);
|
||
else
|
||
fputs_unfiltered (msg, gdb_stderr);
|
||
|
||
abort (); /* NOTE: GDB has only three calls to abort(). */
|
||
}
|
||
|
||
/* Dump core trying to increase the core soft limit to hard limit first. */
|
||
|
||
void
|
||
dump_core (void)
|
||
{
|
||
#ifdef HAVE_SETRLIMIT
|
||
struct rlimit rlim = { RLIM_INFINITY, RLIM_INFINITY };
|
||
|
||
setrlimit (RLIMIT_CORE, &rlim);
|
||
#endif /* HAVE_SETRLIMIT */
|
||
|
||
abort (); /* NOTE: GDB has only three calls to abort(). */
|
||
}
|
||
|
||
/* Check whether GDB will be able to dump core using the dump_core
|
||
function. Returns zero if GDB cannot or should not dump core.
|
||
If LIMIT_KIND is LIMIT_CUR the user's soft limit will be respected.
|
||
If LIMIT_KIND is LIMIT_MAX only the hard limit will be respected. */
|
||
|
||
int
|
||
can_dump_core (enum resource_limit_kind limit_kind)
|
||
{
|
||
#ifdef HAVE_GETRLIMIT
|
||
struct rlimit rlim;
|
||
|
||
/* Be quiet and assume we can dump if an error is returned. */
|
||
if (getrlimit (RLIMIT_CORE, &rlim) != 0)
|
||
return 1;
|
||
|
||
switch (limit_kind)
|
||
{
|
||
case LIMIT_CUR:
|
||
if (rlim.rlim_cur == 0)
|
||
return 0;
|
||
|
||
case LIMIT_MAX:
|
||
if (rlim.rlim_max == 0)
|
||
return 0;
|
||
}
|
||
#endif /* HAVE_GETRLIMIT */
|
||
|
||
return 1;
|
||
}
|
||
|
||
/* Print a warning that we cannot dump core. */
|
||
|
||
void
|
||
warn_cant_dump_core (const char *reason)
|
||
{
|
||
fprintf_unfiltered (gdb_stderr,
|
||
_("%s\nUnable to dump core, use `ulimit -c"
|
||
" unlimited' before executing GDB next time.\n"),
|
||
reason);
|
||
}
|
||
|
||
/* Check whether GDB will be able to dump core using the dump_core
|
||
function, and print a warning if we cannot. */
|
||
|
||
static int
|
||
can_dump_core_warn (enum resource_limit_kind limit_kind,
|
||
const char *reason)
|
||
{
|
||
int core_dump_allowed = can_dump_core (limit_kind);
|
||
|
||
if (!core_dump_allowed)
|
||
warn_cant_dump_core (reason);
|
||
|
||
return core_dump_allowed;
|
||
}
|
||
|
||
/* Allow the user to configure the debugger behavior with respect to
|
||
what to do when an internal problem is detected. */
|
||
|
||
const char internal_problem_ask[] = "ask";
|
||
const char internal_problem_yes[] = "yes";
|
||
const char internal_problem_no[] = "no";
|
||
static const char *const internal_problem_modes[] =
|
||
{
|
||
internal_problem_ask,
|
||
internal_problem_yes,
|
||
internal_problem_no,
|
||
NULL
|
||
};
|
||
|
||
/* Print a message reporting an internal error/warning. Ask the user
|
||
if they want to continue, dump core, or just exit. Return
|
||
something to indicate a quit. */
|
||
|
||
struct internal_problem
|
||
{
|
||
const char *name;
|
||
int user_settable_should_quit;
|
||
const char *should_quit;
|
||
int user_settable_should_dump_core;
|
||
const char *should_dump_core;
|
||
};
|
||
|
||
/* Report a problem, internal to GDB, to the user. Once the problem
|
||
has been reported, and assuming GDB didn't quit, the caller can
|
||
either allow execution to resume or throw an error. */
|
||
|
||
static void ATTRIBUTE_PRINTF (4, 0)
|
||
internal_vproblem (struct internal_problem *problem,
|
||
const char *file, int line, const char *fmt, va_list ap)
|
||
{
|
||
static int dejavu;
|
||
int quit_p;
|
||
int dump_core_p;
|
||
char *reason;
|
||
struct cleanup *cleanup = make_cleanup (null_cleanup, NULL);
|
||
|
||
/* Don't allow infinite error/warning recursion. */
|
||
{
|
||
static char msg[] = "Recursive internal problem.\n";
|
||
|
||
switch (dejavu)
|
||
{
|
||
case 0:
|
||
dejavu = 1;
|
||
break;
|
||
case 1:
|
||
dejavu = 2;
|
||
abort_with_message (msg);
|
||
default:
|
||
dejavu = 3;
|
||
/* Newer GLIBC versions put the warn_unused_result attribute
|
||
on write, but this is one of those rare cases where
|
||
ignoring the return value is correct. Casting to (void)
|
||
does not fix this problem. This is the solution suggested
|
||
at http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25509. */
|
||
if (write (STDERR_FILENO, msg, sizeof (msg)) != sizeof (msg))
|
||
abort (); /* NOTE: GDB has only three calls to abort(). */
|
||
exit (1);
|
||
}
|
||
}
|
||
|
||
/* Create a string containing the full error/warning message. Need
|
||
to call query with this full string, as otherwize the reason
|
||
(error/warning) and question become separated. Format using a
|
||
style similar to a compiler error message. Include extra detail
|
||
so that the user knows that they are living on the edge. */
|
||
{
|
||
char *msg;
|
||
|
||
msg = xstrvprintf (fmt, ap);
|
||
reason = xstrprintf ("%s:%d: %s: %s\n"
|
||
"A problem internal to GDB has been detected,\n"
|
||
"further debugging may prove unreliable.",
|
||
file, line, problem->name, msg);
|
||
xfree (msg);
|
||
make_cleanup (xfree, reason);
|
||
}
|
||
|
||
/* Fall back to abort_with_message if gdb_stderr is not set up. */
|
||
if (gdb_stderr == NULL)
|
||
{
|
||
fputs (reason, stderr);
|
||
abort_with_message ("\n");
|
||
}
|
||
|
||
/* Try to get the message out and at the start of a new line. */
|
||
if (target_supports_terminal_ours ())
|
||
target_terminal_ours ();
|
||
if (filtered_printing_initialized ())
|
||
begin_line ();
|
||
|
||
/* Emit the message unless query will emit it below. */
|
||
if (problem->should_quit != internal_problem_ask
|
||
|| !confirm
|
||
|| !filtered_printing_initialized ())
|
||
fprintf_unfiltered (gdb_stderr, "%s\n", reason);
|
||
|
||
if (problem->should_quit == internal_problem_ask)
|
||
{
|
||
/* Default (yes/batch case) is to quit GDB. When in batch mode
|
||
this lessens the likelihood of GDB going into an infinite
|
||
loop. */
|
||
if (!confirm || !filtered_printing_initialized ())
|
||
quit_p = 1;
|
||
else
|
||
quit_p = query (_("%s\nQuit this debugging session? "), reason);
|
||
}
|
||
else if (problem->should_quit == internal_problem_yes)
|
||
quit_p = 1;
|
||
else if (problem->should_quit == internal_problem_no)
|
||
quit_p = 0;
|
||
else
|
||
internal_error (__FILE__, __LINE__, _("bad switch"));
|
||
|
||
fputs_unfiltered (_("\nThis is a bug, please report it."), gdb_stderr);
|
||
if (REPORT_BUGS_TO[0])
|
||
fprintf_unfiltered (gdb_stderr, _(" For instructions, see:\n%s."),
|
||
REPORT_BUGS_TO);
|
||
fputs_unfiltered ("\n\n", gdb_stderr);
|
||
|
||
if (problem->should_dump_core == internal_problem_ask)
|
||
{
|
||
if (!can_dump_core_warn (LIMIT_MAX, reason))
|
||
dump_core_p = 0;
|
||
else if (!filtered_printing_initialized ())
|
||
dump_core_p = 1;
|
||
else
|
||
{
|
||
/* Default (yes/batch case) is to dump core. This leaves a GDB
|
||
`dropping' so that it is easier to see that something went
|
||
wrong in GDB. */
|
||
dump_core_p = query (_("%s\nCreate a core file of GDB? "), reason);
|
||
}
|
||
}
|
||
else if (problem->should_dump_core == internal_problem_yes)
|
||
dump_core_p = can_dump_core_warn (LIMIT_MAX, reason);
|
||
else if (problem->should_dump_core == internal_problem_no)
|
||
dump_core_p = 0;
|
||
else
|
||
internal_error (__FILE__, __LINE__, _("bad switch"));
|
||
|
||
if (quit_p)
|
||
{
|
||
if (dump_core_p)
|
||
dump_core ();
|
||
else
|
||
exit (1);
|
||
}
|
||
else
|
||
{
|
||
if (dump_core_p)
|
||
{
|
||
#ifdef HAVE_WORKING_FORK
|
||
if (fork () == 0)
|
||
dump_core ();
|
||
#endif
|
||
}
|
||
}
|
||
|
||
dejavu = 0;
|
||
do_cleanups (cleanup);
|
||
}
|
||
|
||
static struct internal_problem internal_error_problem = {
|
||
"internal-error", 1, internal_problem_ask, 1, internal_problem_ask
|
||
};
|
||
|
||
void
|
||
internal_verror (const char *file, int line, const char *fmt, va_list ap)
|
||
{
|
||
internal_vproblem (&internal_error_problem, file, line, fmt, ap);
|
||
throw_quit (_("Command aborted."));
|
||
}
|
||
|
||
static struct internal_problem internal_warning_problem = {
|
||
"internal-warning", 1, internal_problem_ask, 1, internal_problem_ask
|
||
};
|
||
|
||
void
|
||
internal_vwarning (const char *file, int line, const char *fmt, va_list ap)
|
||
{
|
||
internal_vproblem (&internal_warning_problem, file, line, fmt, ap);
|
||
}
|
||
|
||
static struct internal_problem demangler_warning_problem = {
|
||
"demangler-warning", 1, internal_problem_ask, 0, internal_problem_no
|
||
};
|
||
|
||
void
|
||
demangler_vwarning (const char *file, int line, const char *fmt, va_list ap)
|
||
{
|
||
internal_vproblem (&demangler_warning_problem, file, line, fmt, ap);
|
||
}
|
||
|
||
void
|
||
demangler_warning (const char *file, int line, const char *string, ...)
|
||
{
|
||
va_list ap;
|
||
|
||
va_start (ap, string);
|
||
demangler_vwarning (file, line, string, ap);
|
||
va_end (ap);
|
||
}
|
||
|
||
/* Dummy functions to keep add_prefix_cmd happy. */
|
||
|
||
static void
|
||
set_internal_problem_cmd (char *args, int from_tty)
|
||
{
|
||
}
|
||
|
||
static void
|
||
show_internal_problem_cmd (char *args, int from_tty)
|
||
{
|
||
}
|
||
|
||
/* When GDB reports an internal problem (error or warning) it gives
|
||
the user the opportunity to quit GDB and/or create a core file of
|
||
the current debug session. This function registers a few commands
|
||
that make it possible to specify that GDB should always or never
|
||
quit or create a core file, without asking. The commands look
|
||
like:
|
||
|
||
maint set PROBLEM-NAME quit ask|yes|no
|
||
maint show PROBLEM-NAME quit
|
||
maint set PROBLEM-NAME corefile ask|yes|no
|
||
maint show PROBLEM-NAME corefile
|
||
|
||
Where PROBLEM-NAME is currently "internal-error" or
|
||
"internal-warning". */
|
||
|
||
static void
|
||
add_internal_problem_command (struct internal_problem *problem)
|
||
{
|
||
struct cmd_list_element **set_cmd_list;
|
||
struct cmd_list_element **show_cmd_list;
|
||
char *set_doc;
|
||
char *show_doc;
|
||
|
||
set_cmd_list = xmalloc (sizeof (*set_cmd_list));
|
||
show_cmd_list = xmalloc (sizeof (*set_cmd_list));
|
||
*set_cmd_list = NULL;
|
||
*show_cmd_list = NULL;
|
||
|
||
set_doc = xstrprintf (_("Configure what GDB does when %s is detected."),
|
||
problem->name);
|
||
|
||
show_doc = xstrprintf (_("Show what GDB does when %s is detected."),
|
||
problem->name);
|
||
|
||
add_prefix_cmd ((char*) problem->name,
|
||
class_maintenance, set_internal_problem_cmd, set_doc,
|
||
set_cmd_list,
|
||
concat ("maintenance set ", problem->name, " ",
|
||
(char *) NULL),
|
||
0/*allow-unknown*/, &maintenance_set_cmdlist);
|
||
|
||
add_prefix_cmd ((char*) problem->name,
|
||
class_maintenance, show_internal_problem_cmd, show_doc,
|
||
show_cmd_list,
|
||
concat ("maintenance show ", problem->name, " ",
|
||
(char *) NULL),
|
||
0/*allow-unknown*/, &maintenance_show_cmdlist);
|
||
|
||
if (problem->user_settable_should_quit)
|
||
{
|
||
set_doc = xstrprintf (_("Set whether GDB should quit "
|
||
"when an %s is detected"),
|
||
problem->name);
|
||
show_doc = xstrprintf (_("Show whether GDB will quit "
|
||
"when an %s is detected"),
|
||
problem->name);
|
||
add_setshow_enum_cmd ("quit", class_maintenance,
|
||
internal_problem_modes,
|
||
&problem->should_quit,
|
||
set_doc,
|
||
show_doc,
|
||
NULL, /* help_doc */
|
||
NULL, /* setfunc */
|
||
NULL, /* showfunc */
|
||
set_cmd_list,
|
||
show_cmd_list);
|
||
|
||
xfree (set_doc);
|
||
xfree (show_doc);
|
||
}
|
||
|
||
if (problem->user_settable_should_dump_core)
|
||
{
|
||
set_doc = xstrprintf (_("Set whether GDB should create a core "
|
||
"file of GDB when %s is detected"),
|
||
problem->name);
|
||
show_doc = xstrprintf (_("Show whether GDB will create a core "
|
||
"file of GDB when %s is detected"),
|
||
problem->name);
|
||
add_setshow_enum_cmd ("corefile", class_maintenance,
|
||
internal_problem_modes,
|
||
&problem->should_dump_core,
|
||
set_doc,
|
||
show_doc,
|
||
NULL, /* help_doc */
|
||
NULL, /* setfunc */
|
||
NULL, /* showfunc */
|
||
set_cmd_list,
|
||
show_cmd_list);
|
||
|
||
xfree (set_doc);
|
||
xfree (show_doc);
|
||
}
|
||
}
|
||
|
||
/* Return a newly allocated string, containing the PREFIX followed
|
||
by the system error message for errno (separated by a colon).
|
||
|
||
The result must be deallocated after use. */
|
||
|
||
static char *
|
||
perror_string (const char *prefix)
|
||
{
|
||
char *err;
|
||
char *combined;
|
||
|
||
err = safe_strerror (errno);
|
||
combined = (char *) xmalloc (strlen (err) + strlen (prefix) + 3);
|
||
strcpy (combined, prefix);
|
||
strcat (combined, ": ");
|
||
strcat (combined, err);
|
||
|
||
return combined;
|
||
}
|
||
|
||
/* Print the system error message for errno, and also mention STRING
|
||
as the file name for which the error was encountered. Use ERRCODE
|
||
for the thrown exception. Then return to command level. */
|
||
|
||
void
|
||
throw_perror_with_name (enum errors errcode, const char *string)
|
||
{
|
||
char *combined;
|
||
|
||
combined = perror_string (string);
|
||
make_cleanup (xfree, combined);
|
||
|
||
/* I understand setting these is a matter of taste. Still, some people
|
||
may clear errno but not know about bfd_error. Doing this here is not
|
||
unreasonable. */
|
||
bfd_set_error (bfd_error_no_error);
|
||
errno = 0;
|
||
|
||
throw_error (errcode, _("%s."), combined);
|
||
}
|
||
|
||
/* See throw_perror_with_name, ERRCODE defaults here to GENERIC_ERROR. */
|
||
|
||
void
|
||
perror_with_name (const char *string)
|
||
{
|
||
throw_perror_with_name (GENERIC_ERROR, string);
|
||
}
|
||
|
||
/* Same as perror_with_name except that it prints a warning instead
|
||
of throwing an error. */
|
||
|
||
void
|
||
perror_warning_with_name (const char *string)
|
||
{
|
||
char *combined;
|
||
|
||
combined = perror_string (string);
|
||
warning (_("%s"), combined);
|
||
xfree (combined);
|
||
}
|
||
|
||
/* Print the system error message for ERRCODE, and also mention STRING
|
||
as the file name for which the error was encountered. */
|
||
|
||
void
|
||
print_sys_errmsg (const char *string, int errcode)
|
||
{
|
||
char *err;
|
||
char *combined;
|
||
|
||
err = safe_strerror (errcode);
|
||
combined = (char *) alloca (strlen (err) + strlen (string) + 3);
|
||
strcpy (combined, string);
|
||
strcat (combined, ": ");
|
||
strcat (combined, err);
|
||
|
||
/* We want anything which was printed on stdout to come out first, before
|
||
this message. */
|
||
gdb_flush (gdb_stdout);
|
||
fprintf_unfiltered (gdb_stderr, "%s.\n", combined);
|
||
}
|
||
|
||
/* Control C eventually causes this to be called, at a convenient time. */
|
||
|
||
void
|
||
quit (void)
|
||
{
|
||
if (sync_quit_force_run)
|
||
{
|
||
sync_quit_force_run = 0;
|
||
quit_force (NULL, stdin == instream);
|
||
}
|
||
|
||
#ifdef __MSDOS__
|
||
/* No steenking SIGINT will ever be coming our way when the
|
||
program is resumed. Don't lie. */
|
||
throw_quit ("Quit");
|
||
#else
|
||
if (job_control
|
||
/* If there is no terminal switching for this target, then we can't
|
||
possibly get screwed by the lack of job control. */
|
||
|| !target_supports_terminal_ours ())
|
||
throw_quit ("Quit");
|
||
else
|
||
throw_quit ("Quit (expect signal SIGINT when the program is resumed)");
|
||
#endif
|
||
}
|
||
|
||
|
||
/* Called when a memory allocation fails, with the number of bytes of
|
||
memory requested in SIZE. */
|
||
|
||
void
|
||
malloc_failure (long size)
|
||
{
|
||
if (size > 0)
|
||
{
|
||
internal_error (__FILE__, __LINE__,
|
||
_("virtual memory exhausted: can't allocate %ld bytes."),
|
||
size);
|
||
}
|
||
else
|
||
{
|
||
internal_error (__FILE__, __LINE__, _("virtual memory exhausted."));
|
||
}
|
||
}
|
||
|
||
/* My replacement for the read system call.
|
||
Used like `read' but keeps going if `read' returns too soon. */
|
||
|
||
int
|
||
myread (int desc, char *addr, int len)
|
||
{
|
||
int val;
|
||
int orglen = len;
|
||
|
||
while (len > 0)
|
||
{
|
||
val = read (desc, addr, len);
|
||
if (val < 0)
|
||
return val;
|
||
if (val == 0)
|
||
return orglen - len;
|
||
len -= val;
|
||
addr += val;
|
||
}
|
||
return orglen;
|
||
}
|
||
|
||
void
|
||
print_spaces (int n, struct ui_file *file)
|
||
{
|
||
fputs_unfiltered (n_spaces (n), file);
|
||
}
|
||
|
||
/* Print a host address. */
|
||
|
||
void
|
||
gdb_print_host_address (const void *addr, struct ui_file *stream)
|
||
{
|
||
fprintf_filtered (stream, "%s", host_address_to_string (addr));
|
||
}
|
||
|
||
/* See utils.h. */
|
||
|
||
char *
|
||
make_hex_string (const gdb_byte *data, size_t length)
|
||
{
|
||
char *result = xmalloc (length * 2 + 1);
|
||
char *p;
|
||
size_t i;
|
||
|
||
p = result;
|
||
for (i = 0; i < length; ++i)
|
||
p += xsnprintf (p, 3, "%02x", data[i]);
|
||
*p = '\0';
|
||
return result;
|
||
}
|
||
|
||
|
||
|
||
/* A cleanup function that calls regfree. */
|
||
|
||
static void
|
||
do_regfree_cleanup (void *r)
|
||
{
|
||
regfree (r);
|
||
}
|
||
|
||
/* Create a new cleanup that frees the compiled regular expression R. */
|
||
|
||
struct cleanup *
|
||
make_regfree_cleanup (regex_t *r)
|
||
{
|
||
return make_cleanup (do_regfree_cleanup, r);
|
||
}
|
||
|
||
/* Return an xmalloc'd error message resulting from a regular
|
||
expression compilation failure. */
|
||
|
||
char *
|
||
get_regcomp_error (int code, regex_t *rx)
|
||
{
|
||
size_t length = regerror (code, rx, NULL, 0);
|
||
char *result = xmalloc (length);
|
||
|
||
regerror (code, rx, result, length);
|
||
return result;
|
||
}
|
||
|
||
/* Compile a regexp and throw an exception on error. This returns a
|
||
cleanup to free the resulting pattern on success. RX must not be
|
||
NULL. */
|
||
|
||
struct cleanup *
|
||
compile_rx_or_error (regex_t *pattern, const char *rx, const char *message)
|
||
{
|
||
int code;
|
||
|
||
gdb_assert (rx != NULL);
|
||
|
||
code = regcomp (pattern, rx, REG_NOSUB);
|
||
if (code != 0)
|
||
{
|
||
char *err = get_regcomp_error (code, pattern);
|
||
|
||
make_cleanup (xfree, err);
|
||
error (("%s: %s"), message, err);
|
||
}
|
||
|
||
return make_regfree_cleanup (pattern);
|
||
}
|
||
|
||
|
||
|
||
/* This function supports the query, nquery, and yquery functions.
|
||
Ask user a y-or-n question and return 0 if answer is no, 1 if
|
||
answer is yes, or default the answer to the specified default
|
||
(for yquery or nquery). DEFCHAR may be 'y' or 'n' to provide a
|
||
default answer, or '\0' for no default.
|
||
CTLSTR is the control string and should end in "? ". It should
|
||
not say how to answer, because we do that.
|
||
ARGS are the arguments passed along with the CTLSTR argument to
|
||
printf. */
|
||
|
||
static int ATTRIBUTE_PRINTF (1, 0)
|
||
defaulted_query (const char *ctlstr, const char defchar, va_list args)
|
||
{
|
||
int ans2;
|
||
int retval;
|
||
int def_value;
|
||
char def_answer, not_def_answer;
|
||
char *y_string, *n_string, *question, *prompt;
|
||
/* Used to add duration we waited for user to respond to
|
||
prompt_for_continue_wait_time. */
|
||
struct timeval prompt_started, prompt_ended, prompt_delta;
|
||
|
||
/* Set up according to which answer is the default. */
|
||
if (defchar == '\0')
|
||
{
|
||
def_value = 1;
|
||
def_answer = 'Y';
|
||
not_def_answer = 'N';
|
||
y_string = "y";
|
||
n_string = "n";
|
||
}
|
||
else if (defchar == 'y')
|
||
{
|
||
def_value = 1;
|
||
def_answer = 'Y';
|
||
not_def_answer = 'N';
|
||
y_string = "[y]";
|
||
n_string = "n";
|
||
}
|
||
else
|
||
{
|
||
def_value = 0;
|
||
def_answer = 'N';
|
||
not_def_answer = 'Y';
|
||
y_string = "y";
|
||
n_string = "[n]";
|
||
}
|
||
|
||
/* Automatically answer the default value if the user did not want
|
||
prompts or the command was issued with the server prefix. */
|
||
if (!confirm || server_command)
|
||
return def_value;
|
||
|
||
/* If input isn't coming from the user directly, just say what
|
||
question we're asking, and then answer the default automatically. This
|
||
way, important error messages don't get lost when talking to GDB
|
||
over a pipe. */
|
||
if (! input_from_terminal_p ())
|
||
{
|
||
wrap_here ("");
|
||
vfprintf_filtered (gdb_stdout, ctlstr, args);
|
||
|
||
printf_filtered (_("(%s or %s) [answered %c; "
|
||
"input not from terminal]\n"),
|
||
y_string, n_string, def_answer);
|
||
gdb_flush (gdb_stdout);
|
||
|
||
return def_value;
|
||
}
|
||
|
||
if (deprecated_query_hook)
|
||
{
|
||
return deprecated_query_hook (ctlstr, args);
|
||
}
|
||
|
||
/* Format the question outside of the loop, to avoid reusing args. */
|
||
question = xstrvprintf (ctlstr, args);
|
||
prompt = xstrprintf (_("%s%s(%s or %s) %s"),
|
||
annotation_level > 1 ? "\n\032\032pre-query\n" : "",
|
||
question, y_string, n_string,
|
||
annotation_level > 1 ? "\n\032\032query\n" : "");
|
||
xfree (question);
|
||
|
||
/* Used for calculating time spend waiting for user. */
|
||
gettimeofday (&prompt_started, NULL);
|
||
|
||
while (1)
|
||
{
|
||
char *response, answer;
|
||
|
||
gdb_flush (gdb_stdout);
|
||
response = gdb_readline_wrapper (prompt);
|
||
|
||
if (response == NULL) /* C-d */
|
||
{
|
||
printf_filtered ("EOF [assumed %c]\n", def_answer);
|
||
retval = def_value;
|
||
break;
|
||
}
|
||
|
||
answer = response[0];
|
||
xfree (response);
|
||
|
||
if (answer >= 'a')
|
||
answer -= 040;
|
||
/* Check answer. For the non-default, the user must specify
|
||
the non-default explicitly. */
|
||
if (answer == not_def_answer)
|
||
{
|
||
retval = !def_value;
|
||
break;
|
||
}
|
||
/* Otherwise, if a default was specified, the user may either
|
||
specify the required input or have it default by entering
|
||
nothing. */
|
||
if (answer == def_answer
|
||
|| (defchar != '\0' && answer == '\0'))
|
||
{
|
||
retval = def_value;
|
||
break;
|
||
}
|
||
/* Invalid entries are not defaulted and require another selection. */
|
||
printf_filtered (_("Please answer %s or %s.\n"),
|
||
y_string, n_string);
|
||
}
|
||
|
||
/* Add time spend in this routine to prompt_for_continue_wait_time. */
|
||
gettimeofday (&prompt_ended, NULL);
|
||
timeval_sub (&prompt_delta, &prompt_ended, &prompt_started);
|
||
timeval_add (&prompt_for_continue_wait_time,
|
||
&prompt_for_continue_wait_time, &prompt_delta);
|
||
|
||
xfree (prompt);
|
||
if (annotation_level > 1)
|
||
printf_filtered (("\n\032\032post-query\n"));
|
||
return retval;
|
||
}
|
||
|
||
|
||
/* Ask user a y-or-n question and return 0 if answer is no, 1 if
|
||
answer is yes, or 0 if answer is defaulted.
|
||
Takes three args which are given to printf to print the question.
|
||
The first, a control string, should end in "? ".
|
||
It should not say how to answer, because we do that. */
|
||
|
||
int
|
||
nquery (const char *ctlstr, ...)
|
||
{
|
||
va_list args;
|
||
int ret;
|
||
|
||
va_start (args, ctlstr);
|
||
ret = defaulted_query (ctlstr, 'n', args);
|
||
va_end (args);
|
||
return ret;
|
||
}
|
||
|
||
/* Ask user a y-or-n question and return 0 if answer is no, 1 if
|
||
answer is yes, or 1 if answer is defaulted.
|
||
Takes three args which are given to printf to print the question.
|
||
The first, a control string, should end in "? ".
|
||
It should not say how to answer, because we do that. */
|
||
|
||
int
|
||
yquery (const char *ctlstr, ...)
|
||
{
|
||
va_list args;
|
||
int ret;
|
||
|
||
va_start (args, ctlstr);
|
||
ret = defaulted_query (ctlstr, 'y', args);
|
||
va_end (args);
|
||
return ret;
|
||
}
|
||
|
||
/* Ask user a y-or-n question and return 1 iff answer is yes.
|
||
Takes three args which are given to printf to print the question.
|
||
The first, a control string, should end in "? ".
|
||
It should not say how to answer, because we do that. */
|
||
|
||
int
|
||
query (const char *ctlstr, ...)
|
||
{
|
||
va_list args;
|
||
int ret;
|
||
|
||
va_start (args, ctlstr);
|
||
ret = defaulted_query (ctlstr, '\0', args);
|
||
va_end (args);
|
||
return ret;
|
||
}
|
||
|
||
/* A helper for parse_escape that converts a host character to a
|
||
target character. C is the host character. If conversion is
|
||
possible, then the target character is stored in *TARGET_C and the
|
||
function returns 1. Otherwise, the function returns 0. */
|
||
|
||
static int
|
||
host_char_to_target (struct gdbarch *gdbarch, int c, int *target_c)
|
||
{
|
||
struct obstack host_data;
|
||
char the_char = c;
|
||
struct cleanup *cleanups;
|
||
int result = 0;
|
||
|
||
obstack_init (&host_data);
|
||
cleanups = make_cleanup_obstack_free (&host_data);
|
||
|
||
convert_between_encodings (target_charset (gdbarch), host_charset (),
|
||
(gdb_byte *) &the_char, 1, 1,
|
||
&host_data, translit_none);
|
||
|
||
if (obstack_object_size (&host_data) == 1)
|
||
{
|
||
result = 1;
|
||
*target_c = *(char *) obstack_base (&host_data);
|
||
}
|
||
|
||
do_cleanups (cleanups);
|
||
return result;
|
||
}
|
||
|
||
/* Parse a C escape sequence. STRING_PTR points to a variable
|
||
containing a pointer to the string to parse. That pointer
|
||
should point to the character after the \. That pointer
|
||
is updated past the characters we use. The value of the
|
||
escape sequence is returned.
|
||
|
||
A negative value means the sequence \ newline was seen,
|
||
which is supposed to be equivalent to nothing at all.
|
||
|
||
If \ is followed by a null character, we return a negative
|
||
value and leave the string pointer pointing at the null character.
|
||
|
||
If \ is followed by 000, we return 0 and leave the string pointer
|
||
after the zeros. A value of 0 does not mean end of string. */
|
||
|
||
int
|
||
parse_escape (struct gdbarch *gdbarch, const char **string_ptr)
|
||
{
|
||
int target_char = -2; /* Initialize to avoid GCC warnings. */
|
||
int c = *(*string_ptr)++;
|
||
|
||
switch (c)
|
||
{
|
||
case '\n':
|
||
return -2;
|
||
case 0:
|
||
(*string_ptr)--;
|
||
return 0;
|
||
|
||
case '0':
|
||
case '1':
|
||
case '2':
|
||
case '3':
|
||
case '4':
|
||
case '5':
|
||
case '6':
|
||
case '7':
|
||
{
|
||
int i = host_hex_value (c);
|
||
int count = 0;
|
||
while (++count < 3)
|
||
{
|
||
c = (**string_ptr);
|
||
if (isdigit (c) && c != '8' && c != '9')
|
||
{
|
||
(*string_ptr)++;
|
||
i *= 8;
|
||
i += host_hex_value (c);
|
||
}
|
||
else
|
||
{
|
||
break;
|
||
}
|
||
}
|
||
return i;
|
||
}
|
||
|
||
case 'a':
|
||
c = '\a';
|
||
break;
|
||
case 'b':
|
||
c = '\b';
|
||
break;
|
||
case 'f':
|
||
c = '\f';
|
||
break;
|
||
case 'n':
|
||
c = '\n';
|
||
break;
|
||
case 'r':
|
||
c = '\r';
|
||
break;
|
||
case 't':
|
||
c = '\t';
|
||
break;
|
||
case 'v':
|
||
c = '\v';
|
||
break;
|
||
|
||
default:
|
||
break;
|
||
}
|
||
|
||
if (!host_char_to_target (gdbarch, c, &target_char))
|
||
error (_("The escape sequence `\\%c' is equivalent to plain `%c',"
|
||
" which has no equivalent\nin the `%s' character set."),
|
||
c, c, target_charset (gdbarch));
|
||
return target_char;
|
||
}
|
||
|
||
/* Print the character C on STREAM as part of the contents of a literal
|
||
string whose delimiter is QUOTER. Note that this routine should only
|
||
be call for printing things which are independent of the language
|
||
of the program being debugged.
|
||
|
||
printchar will normally escape backslashes and instances of QUOTER. If
|
||
QUOTER is 0, printchar won't escape backslashes or any quoting character.
|
||
As a side effect, if you pass the backslash character as the QUOTER,
|
||
printchar will escape backslashes as usual, but not any other quoting
|
||
character. */
|
||
|
||
static void
|
||
printchar (int c, void (*do_fputs) (const char *, struct ui_file *),
|
||
void (*do_fprintf) (struct ui_file *, const char *, ...)
|
||
ATTRIBUTE_FPTR_PRINTF_2, struct ui_file *stream, int quoter)
|
||
{
|
||
c &= 0xFF; /* Avoid sign bit follies */
|
||
|
||
if (c < 0x20 || /* Low control chars */
|
||
(c >= 0x7F && c < 0xA0) || /* DEL, High controls */
|
||
(sevenbit_strings && c >= 0x80))
|
||
{ /* high order bit set */
|
||
switch (c)
|
||
{
|
||
case '\n':
|
||
do_fputs ("\\n", stream);
|
||
break;
|
||
case '\b':
|
||
do_fputs ("\\b", stream);
|
||
break;
|
||
case '\t':
|
||
do_fputs ("\\t", stream);
|
||
break;
|
||
case '\f':
|
||
do_fputs ("\\f", stream);
|
||
break;
|
||
case '\r':
|
||
do_fputs ("\\r", stream);
|
||
break;
|
||
case '\033':
|
||
do_fputs ("\\e", stream);
|
||
break;
|
||
case '\007':
|
||
do_fputs ("\\a", stream);
|
||
break;
|
||
default:
|
||
do_fprintf (stream, "\\%.3o", (unsigned int) c);
|
||
break;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
if (quoter != 0 && (c == '\\' || c == quoter))
|
||
do_fputs ("\\", stream);
|
||
do_fprintf (stream, "%c", c);
|
||
}
|
||
}
|
||
|
||
/* Print the character C on STREAM as part of the contents of a
|
||
literal string whose delimiter is QUOTER. Note that these routines
|
||
should only be call for printing things which are independent of
|
||
the language of the program being debugged. */
|
||
|
||
void
|
||
fputstr_filtered (const char *str, int quoter, struct ui_file *stream)
|
||
{
|
||
while (*str)
|
||
printchar (*str++, fputs_filtered, fprintf_filtered, stream, quoter);
|
||
}
|
||
|
||
void
|
||
fputstr_unfiltered (const char *str, int quoter, struct ui_file *stream)
|
||
{
|
||
while (*str)
|
||
printchar (*str++, fputs_unfiltered, fprintf_unfiltered, stream, quoter);
|
||
}
|
||
|
||
void
|
||
fputstrn_filtered (const char *str, int n, int quoter,
|
||
struct ui_file *stream)
|
||
{
|
||
int i;
|
||
|
||
for (i = 0; i < n; i++)
|
||
printchar (str[i], fputs_filtered, fprintf_filtered, stream, quoter);
|
||
}
|
||
|
||
void
|
||
fputstrn_unfiltered (const char *str, int n, int quoter,
|
||
struct ui_file *stream)
|
||
{
|
||
int i;
|
||
|
||
for (i = 0; i < n; i++)
|
||
printchar (str[i], fputs_unfiltered, fprintf_unfiltered, stream, quoter);
|
||
}
|
||
|
||
|
||
/* Number of lines per page or UINT_MAX if paging is disabled. */
|
||
static unsigned int lines_per_page;
|
||
static void
|
||
show_lines_per_page (struct ui_file *file, int from_tty,
|
||
struct cmd_list_element *c, const char *value)
|
||
{
|
||
fprintf_filtered (file,
|
||
_("Number of lines gdb thinks are in a page is %s.\n"),
|
||
value);
|
||
}
|
||
|
||
/* Number of chars per line or UINT_MAX if line folding is disabled. */
|
||
static unsigned int chars_per_line;
|
||
static void
|
||
show_chars_per_line (struct ui_file *file, int from_tty,
|
||
struct cmd_list_element *c, const char *value)
|
||
{
|
||
fprintf_filtered (file,
|
||
_("Number of characters gdb thinks "
|
||
"are in a line is %s.\n"),
|
||
value);
|
||
}
|
||
|
||
/* Current count of lines printed on this page, chars on this line. */
|
||
static unsigned int lines_printed, chars_printed;
|
||
|
||
/* Buffer and start column of buffered text, for doing smarter word-
|
||
wrapping. When someone calls wrap_here(), we start buffering output
|
||
that comes through fputs_filtered(). If we see a newline, we just
|
||
spit it out and forget about the wrap_here(). If we see another
|
||
wrap_here(), we spit it out and remember the newer one. If we see
|
||
the end of the line, we spit out a newline, the indent, and then
|
||
the buffered output. */
|
||
|
||
/* Malloc'd buffer with chars_per_line+2 bytes. Contains characters which
|
||
are waiting to be output (they have already been counted in chars_printed).
|
||
When wrap_buffer[0] is null, the buffer is empty. */
|
||
static char *wrap_buffer;
|
||
|
||
/* Pointer in wrap_buffer to the next character to fill. */
|
||
static char *wrap_pointer;
|
||
|
||
/* String to indent by if the wrap occurs. Must not be NULL if wrap_column
|
||
is non-zero. */
|
||
static char *wrap_indent;
|
||
|
||
/* Column number on the screen where wrap_buffer begins, or 0 if wrapping
|
||
is not in effect. */
|
||
static int wrap_column;
|
||
|
||
|
||
/* Inialize the number of lines per page and chars per line. */
|
||
|
||
void
|
||
init_page_info (void)
|
||
{
|
||
if (batch_flag)
|
||
{
|
||
lines_per_page = UINT_MAX;
|
||
chars_per_line = UINT_MAX;
|
||
}
|
||
else
|
||
#if defined(TUI)
|
||
if (!tui_get_command_dimension (&chars_per_line, &lines_per_page))
|
||
#endif
|
||
{
|
||
int rows, cols;
|
||
|
||
#if defined(__GO32__)
|
||
rows = ScreenRows ();
|
||
cols = ScreenCols ();
|
||
lines_per_page = rows;
|
||
chars_per_line = cols;
|
||
#else
|
||
/* Make sure Readline has initialized its terminal settings. */
|
||
rl_reset_terminal (NULL);
|
||
|
||
/* Get the screen size from Readline. */
|
||
rl_get_screen_size (&rows, &cols);
|
||
lines_per_page = rows;
|
||
chars_per_line = cols;
|
||
|
||
/* Readline should have fetched the termcap entry for us.
|
||
Only try to use tgetnum function if rl_get_screen_size
|
||
did not return a useful value. */
|
||
if (((rows <= 0) && (tgetnum ("li") < 0))
|
||
/* Also disable paging if inside EMACS. */
|
||
|| getenv ("EMACS"))
|
||
{
|
||
/* The number of lines per page is not mentioned in the terminal
|
||
description or EMACS evironment variable is set. This probably
|
||
means that paging is not useful, so disable paging. */
|
||
lines_per_page = UINT_MAX;
|
||
}
|
||
|
||
/* If the output is not a terminal, don't paginate it. */
|
||
if (!ui_file_isatty (gdb_stdout))
|
||
lines_per_page = UINT_MAX;
|
||
#endif
|
||
}
|
||
|
||
set_screen_size ();
|
||
set_width ();
|
||
}
|
||
|
||
/* Return nonzero if filtered printing is initialized. */
|
||
int
|
||
filtered_printing_initialized (void)
|
||
{
|
||
return wrap_buffer != NULL;
|
||
}
|
||
|
||
/* Helper for make_cleanup_restore_page_info. */
|
||
|
||
static void
|
||
do_restore_page_info_cleanup (void *arg)
|
||
{
|
||
set_screen_size ();
|
||
set_width ();
|
||
}
|
||
|
||
/* Provide cleanup for restoring the terminal size. */
|
||
|
||
struct cleanup *
|
||
make_cleanup_restore_page_info (void)
|
||
{
|
||
struct cleanup *back_to;
|
||
|
||
back_to = make_cleanup (do_restore_page_info_cleanup, NULL);
|
||
make_cleanup_restore_uinteger (&lines_per_page);
|
||
make_cleanup_restore_uinteger (&chars_per_line);
|
||
|
||
return back_to;
|
||
}
|
||
|
||
/* Temporarily set BATCH_FLAG and the associated unlimited terminal size.
|
||
Provide cleanup for restoring the original state. */
|
||
|
||
struct cleanup *
|
||
set_batch_flag_and_make_cleanup_restore_page_info (void)
|
||
{
|
||
struct cleanup *back_to = make_cleanup_restore_page_info ();
|
||
|
||
make_cleanup_restore_integer (&batch_flag);
|
||
batch_flag = 1;
|
||
init_page_info ();
|
||
|
||
return back_to;
|
||
}
|
||
|
||
/* Set the screen size based on LINES_PER_PAGE and CHARS_PER_LINE. */
|
||
|
||
static void
|
||
set_screen_size (void)
|
||
{
|
||
int rows = lines_per_page;
|
||
int cols = chars_per_line;
|
||
|
||
if (rows <= 0)
|
||
rows = INT_MAX;
|
||
|
||
if (cols <= 0)
|
||
cols = INT_MAX;
|
||
|
||
/* Update Readline's idea of the terminal size. */
|
||
rl_set_screen_size (rows, cols);
|
||
}
|
||
|
||
/* Reinitialize WRAP_BUFFER according to the current value of
|
||
CHARS_PER_LINE. */
|
||
|
||
static void
|
||
set_width (void)
|
||
{
|
||
if (chars_per_line == 0)
|
||
init_page_info ();
|
||
|
||
if (!wrap_buffer)
|
||
{
|
||
wrap_buffer = (char *) xmalloc (chars_per_line + 2);
|
||
wrap_buffer[0] = '\0';
|
||
}
|
||
else
|
||
wrap_buffer = (char *) xrealloc (wrap_buffer, chars_per_line + 2);
|
||
wrap_pointer = wrap_buffer; /* Start it at the beginning. */
|
||
}
|
||
|
||
static void
|
||
set_width_command (char *args, int from_tty, struct cmd_list_element *c)
|
||
{
|
||
set_screen_size ();
|
||
set_width ();
|
||
}
|
||
|
||
static void
|
||
set_height_command (char *args, int from_tty, struct cmd_list_element *c)
|
||
{
|
||
set_screen_size ();
|
||
}
|
||
|
||
/* Wait, so the user can read what's on the screen. Prompt the user
|
||
to continue by pressing RETURN. */
|
||
|
||
static void
|
||
prompt_for_continue (void)
|
||
{
|
||
char *ignore;
|
||
char cont_prompt[120];
|
||
/* Used to add duration we waited for user to respond to
|
||
prompt_for_continue_wait_time. */
|
||
struct timeval prompt_started, prompt_ended, prompt_delta;
|
||
|
||
gettimeofday (&prompt_started, NULL);
|
||
|
||
if (annotation_level > 1)
|
||
printf_unfiltered (("\n\032\032pre-prompt-for-continue\n"));
|
||
|
||
strcpy (cont_prompt,
|
||
"---Type <return> to continue, or q <return> to quit---");
|
||
if (annotation_level > 1)
|
||
strcat (cont_prompt, "\n\032\032prompt-for-continue\n");
|
||
|
||
/* We must do this *before* we call gdb_readline, else it will eventually
|
||
call us -- thinking that we're trying to print beyond the end of the
|
||
screen. */
|
||
reinitialize_more_filter ();
|
||
|
||
immediate_quit++;
|
||
QUIT;
|
||
|
||
/* We'll need to handle input. */
|
||
target_terminal_ours ();
|
||
|
||
/* On a real operating system, the user can quit with SIGINT.
|
||
But not on GO32.
|
||
|
||
'q' is provided on all systems so users don't have to change habits
|
||
from system to system, and because telling them what to do in
|
||
the prompt is more user-friendly than expecting them to think of
|
||
SIGINT. */
|
||
/* Call readline, not gdb_readline, because GO32 readline handles control-C
|
||
whereas control-C to gdb_readline will cause the user to get dumped
|
||
out to DOS. */
|
||
ignore = gdb_readline_wrapper (cont_prompt);
|
||
|
||
/* Add time spend in this routine to prompt_for_continue_wait_time. */
|
||
gettimeofday (&prompt_ended, NULL);
|
||
timeval_sub (&prompt_delta, &prompt_ended, &prompt_started);
|
||
timeval_add (&prompt_for_continue_wait_time,
|
||
&prompt_for_continue_wait_time, &prompt_delta);
|
||
|
||
if (annotation_level > 1)
|
||
printf_unfiltered (("\n\032\032post-prompt-for-continue\n"));
|
||
|
||
if (ignore)
|
||
{
|
||
char *p = ignore;
|
||
|
||
while (*p == ' ' || *p == '\t')
|
||
++p;
|
||
if (p[0] == 'q')
|
||
quit ();
|
||
xfree (ignore);
|
||
}
|
||
immediate_quit--;
|
||
|
||
/* Now we have to do this again, so that GDB will know that it doesn't
|
||
need to save the ---Type <return>--- line at the top of the screen. */
|
||
reinitialize_more_filter ();
|
||
|
||
dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */
|
||
}
|
||
|
||
/* Initalize timer to keep track of how long we waited for the user. */
|
||
|
||
void
|
||
reset_prompt_for_continue_wait_time (void)
|
||
{
|
||
static const struct timeval zero_timeval = { 0 };
|
||
|
||
prompt_for_continue_wait_time = zero_timeval;
|
||
}
|
||
|
||
/* Fetch the cumulative time spent in prompt_for_continue. */
|
||
|
||
struct timeval
|
||
get_prompt_for_continue_wait_time (void)
|
||
{
|
||
return prompt_for_continue_wait_time;
|
||
}
|
||
|
||
/* Reinitialize filter; ie. tell it to reset to original values. */
|
||
|
||
void
|
||
reinitialize_more_filter (void)
|
||
{
|
||
lines_printed = 0;
|
||
chars_printed = 0;
|
||
}
|
||
|
||
/* Indicate that if the next sequence of characters overflows the line,
|
||
a newline should be inserted here rather than when it hits the end.
|
||
If INDENT is non-null, it is a string to be printed to indent the
|
||
wrapped part on the next line. INDENT must remain accessible until
|
||
the next call to wrap_here() or until a newline is printed through
|
||
fputs_filtered().
|
||
|
||
If the line is already overfull, we immediately print a newline and
|
||
the indentation, and disable further wrapping.
|
||
|
||
If we don't know the width of lines, but we know the page height,
|
||
we must not wrap words, but should still keep track of newlines
|
||
that were explicitly printed.
|
||
|
||
INDENT should not contain tabs, as that will mess up the char count
|
||
on the next line. FIXME.
|
||
|
||
This routine is guaranteed to force out any output which has been
|
||
squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be
|
||
used to force out output from the wrap_buffer. */
|
||
|
||
void
|
||
wrap_here (char *indent)
|
||
{
|
||
/* This should have been allocated, but be paranoid anyway. */
|
||
if (!wrap_buffer)
|
||
internal_error (__FILE__, __LINE__,
|
||
_("failed internal consistency check"));
|
||
|
||
if (wrap_buffer[0])
|
||
{
|
||
*wrap_pointer = '\0';
|
||
fputs_unfiltered (wrap_buffer, gdb_stdout);
|
||
}
|
||
wrap_pointer = wrap_buffer;
|
||
wrap_buffer[0] = '\0';
|
||
if (chars_per_line == UINT_MAX) /* No line overflow checking. */
|
||
{
|
||
wrap_column = 0;
|
||
}
|
||
else if (chars_printed >= chars_per_line)
|
||
{
|
||
puts_filtered ("\n");
|
||
if (indent != NULL)
|
||
puts_filtered (indent);
|
||
wrap_column = 0;
|
||
}
|
||
else
|
||
{
|
||
wrap_column = chars_printed;
|
||
if (indent == NULL)
|
||
wrap_indent = "";
|
||
else
|
||
wrap_indent = indent;
|
||
}
|
||
}
|
||
|
||
/* Print input string to gdb_stdout, filtered, with wrap,
|
||
arranging strings in columns of n chars. String can be
|
||
right or left justified in the column. Never prints
|
||
trailing spaces. String should never be longer than
|
||
width. FIXME: this could be useful for the EXAMINE
|
||
command, which currently doesn't tabulate very well. */
|
||
|
||
void
|
||
puts_filtered_tabular (char *string, int width, int right)
|
||
{
|
||
int spaces = 0;
|
||
int stringlen;
|
||
char *spacebuf;
|
||
|
||
gdb_assert (chars_per_line > 0);
|
||
if (chars_per_line == UINT_MAX)
|
||
{
|
||
fputs_filtered (string, gdb_stdout);
|
||
fputs_filtered ("\n", gdb_stdout);
|
||
return;
|
||
}
|
||
|
||
if (((chars_printed - 1) / width + 2) * width >= chars_per_line)
|
||
fputs_filtered ("\n", gdb_stdout);
|
||
|
||
if (width >= chars_per_line)
|
||
width = chars_per_line - 1;
|
||
|
||
stringlen = strlen (string);
|
||
|
||
if (chars_printed > 0)
|
||
spaces = width - (chars_printed - 1) % width - 1;
|
||
if (right)
|
||
spaces += width - stringlen;
|
||
|
||
spacebuf = alloca (spaces + 1);
|
||
spacebuf[spaces] = '\0';
|
||
while (spaces--)
|
||
spacebuf[spaces] = ' ';
|
||
|
||
fputs_filtered (spacebuf, gdb_stdout);
|
||
fputs_filtered (string, gdb_stdout);
|
||
}
|
||
|
||
|
||
/* Ensure that whatever gets printed next, using the filtered output
|
||
commands, starts at the beginning of the line. I.e. if there is
|
||
any pending output for the current line, flush it and start a new
|
||
line. Otherwise do nothing. */
|
||
|
||
void
|
||
begin_line (void)
|
||
{
|
||
if (chars_printed > 0)
|
||
{
|
||
puts_filtered ("\n");
|
||
}
|
||
}
|
||
|
||
|
||
/* Like fputs but if FILTER is true, pause after every screenful.
|
||
|
||
Regardless of FILTER can wrap at points other than the final
|
||
character of a line.
|
||
|
||
Unlike fputs, fputs_maybe_filtered does not return a value.
|
||
It is OK for LINEBUFFER to be NULL, in which case just don't print
|
||
anything.
|
||
|
||
Note that a longjmp to top level may occur in this routine (only if
|
||
FILTER is true) (since prompt_for_continue may do so) so this
|
||
routine should not be called when cleanups are not in place. */
|
||
|
||
static void
|
||
fputs_maybe_filtered (const char *linebuffer, struct ui_file *stream,
|
||
int filter)
|
||
{
|
||
const char *lineptr;
|
||
|
||
if (linebuffer == 0)
|
||
return;
|
||
|
||
/* Don't do any filtering if it is disabled. */
|
||
if (stream != gdb_stdout
|
||
|| !pagination_enabled
|
||
|| batch_flag
|
||
|| (lines_per_page == UINT_MAX && chars_per_line == UINT_MAX)
|
||
|| top_level_interpreter () == NULL
|
||
|| ui_out_is_mi_like_p (interp_ui_out (top_level_interpreter ())))
|
||
{
|
||
fputs_unfiltered (linebuffer, stream);
|
||
return;
|
||
}
|
||
|
||
/* Go through and output each character. Show line extension
|
||
when this is necessary; prompt user for new page when this is
|
||
necessary. */
|
||
|
||
lineptr = linebuffer;
|
||
while (*lineptr)
|
||
{
|
||
/* Possible new page. */
|
||
if (filter && (lines_printed >= lines_per_page - 1))
|
||
prompt_for_continue ();
|
||
|
||
while (*lineptr && *lineptr != '\n')
|
||
{
|
||
/* Print a single line. */
|
||
if (*lineptr == '\t')
|
||
{
|
||
if (wrap_column)
|
||
*wrap_pointer++ = '\t';
|
||
else
|
||
fputc_unfiltered ('\t', stream);
|
||
/* Shifting right by 3 produces the number of tab stops
|
||
we have already passed, and then adding one and
|
||
shifting left 3 advances to the next tab stop. */
|
||
chars_printed = ((chars_printed >> 3) + 1) << 3;
|
||
lineptr++;
|
||
}
|
||
else
|
||
{
|
||
if (wrap_column)
|
||
*wrap_pointer++ = *lineptr;
|
||
else
|
||
fputc_unfiltered (*lineptr, stream);
|
||
chars_printed++;
|
||
lineptr++;
|
||
}
|
||
|
||
if (chars_printed >= chars_per_line)
|
||
{
|
||
unsigned int save_chars = chars_printed;
|
||
|
||
chars_printed = 0;
|
||
lines_printed++;
|
||
/* If we aren't actually wrapping, don't output newline --
|
||
if chars_per_line is right, we probably just overflowed
|
||
anyway; if it's wrong, let us keep going. */
|
||
if (wrap_column)
|
||
fputc_unfiltered ('\n', stream);
|
||
|
||
/* Possible new page. */
|
||
if (lines_printed >= lines_per_page - 1)
|
||
prompt_for_continue ();
|
||
|
||
/* Now output indentation and wrapped string. */
|
||
if (wrap_column)
|
||
{
|
||
fputs_unfiltered (wrap_indent, stream);
|
||
*wrap_pointer = '\0'; /* Null-terminate saved stuff, */
|
||
fputs_unfiltered (wrap_buffer, stream); /* and eject it. */
|
||
/* FIXME, this strlen is what prevents wrap_indent from
|
||
containing tabs. However, if we recurse to print it
|
||
and count its chars, we risk trouble if wrap_indent is
|
||
longer than (the user settable) chars_per_line.
|
||
Note also that this can set chars_printed > chars_per_line
|
||
if we are printing a long string. */
|
||
chars_printed = strlen (wrap_indent)
|
||
+ (save_chars - wrap_column);
|
||
wrap_pointer = wrap_buffer; /* Reset buffer */
|
||
wrap_buffer[0] = '\0';
|
||
wrap_column = 0; /* And disable fancy wrap */
|
||
}
|
||
}
|
||
}
|
||
|
||
if (*lineptr == '\n')
|
||
{
|
||
chars_printed = 0;
|
||
wrap_here ((char *) 0); /* Spit out chars, cancel
|
||
further wraps. */
|
||
lines_printed++;
|
||
fputc_unfiltered ('\n', stream);
|
||
lineptr++;
|
||
}
|
||
}
|
||
}
|
||
|
||
void
|
||
fputs_filtered (const char *linebuffer, struct ui_file *stream)
|
||
{
|
||
fputs_maybe_filtered (linebuffer, stream, 1);
|
||
}
|
||
|
||
int
|
||
putchar_unfiltered (int c)
|
||
{
|
||
char buf = c;
|
||
|
||
ui_file_write (gdb_stdout, &buf, 1);
|
||
return c;
|
||
}
|
||
|
||
/* Write character C to gdb_stdout using GDB's paging mechanism and return C.
|
||
May return nonlocally. */
|
||
|
||
int
|
||
putchar_filtered (int c)
|
||
{
|
||
return fputc_filtered (c, gdb_stdout);
|
||
}
|
||
|
||
int
|
||
fputc_unfiltered (int c, struct ui_file *stream)
|
||
{
|
||
char buf = c;
|
||
|
||
ui_file_write (stream, &buf, 1);
|
||
return c;
|
||
}
|
||
|
||
int
|
||
fputc_filtered (int c, struct ui_file *stream)
|
||
{
|
||
char buf[2];
|
||
|
||
buf[0] = c;
|
||
buf[1] = 0;
|
||
fputs_filtered (buf, stream);
|
||
return c;
|
||
}
|
||
|
||
/* puts_debug is like fputs_unfiltered, except it prints special
|
||
characters in printable fashion. */
|
||
|
||
void
|
||
puts_debug (char *prefix, char *string, char *suffix)
|
||
{
|
||
int ch;
|
||
|
||
/* Print prefix and suffix after each line. */
|
||
static int new_line = 1;
|
||
static int return_p = 0;
|
||
static char *prev_prefix = "";
|
||
static char *prev_suffix = "";
|
||
|
||
if (*string == '\n')
|
||
return_p = 0;
|
||
|
||
/* If the prefix is changing, print the previous suffix, a new line,
|
||
and the new prefix. */
|
||
if ((return_p || (strcmp (prev_prefix, prefix) != 0)) && !new_line)
|
||
{
|
||
fputs_unfiltered (prev_suffix, gdb_stdlog);
|
||
fputs_unfiltered ("\n", gdb_stdlog);
|
||
fputs_unfiltered (prefix, gdb_stdlog);
|
||
}
|
||
|
||
/* Print prefix if we printed a newline during the previous call. */
|
||
if (new_line)
|
||
{
|
||
new_line = 0;
|
||
fputs_unfiltered (prefix, gdb_stdlog);
|
||
}
|
||
|
||
prev_prefix = prefix;
|
||
prev_suffix = suffix;
|
||
|
||
/* Output characters in a printable format. */
|
||
while ((ch = *string++) != '\0')
|
||
{
|
||
switch (ch)
|
||
{
|
||
default:
|
||
if (isprint (ch))
|
||
fputc_unfiltered (ch, gdb_stdlog);
|
||
|
||
else
|
||
fprintf_unfiltered (gdb_stdlog, "\\x%02x", ch & 0xff);
|
||
break;
|
||
|
||
case '\\':
|
||
fputs_unfiltered ("\\\\", gdb_stdlog);
|
||
break;
|
||
case '\b':
|
||
fputs_unfiltered ("\\b", gdb_stdlog);
|
||
break;
|
||
case '\f':
|
||
fputs_unfiltered ("\\f", gdb_stdlog);
|
||
break;
|
||
case '\n':
|
||
new_line = 1;
|
||
fputs_unfiltered ("\\n", gdb_stdlog);
|
||
break;
|
||
case '\r':
|
||
fputs_unfiltered ("\\r", gdb_stdlog);
|
||
break;
|
||
case '\t':
|
||
fputs_unfiltered ("\\t", gdb_stdlog);
|
||
break;
|
||
case '\v':
|
||
fputs_unfiltered ("\\v", gdb_stdlog);
|
||
break;
|
||
}
|
||
|
||
return_p = ch == '\r';
|
||
}
|
||
|
||
/* Print suffix if we printed a newline. */
|
||
if (new_line)
|
||
{
|
||
fputs_unfiltered (suffix, gdb_stdlog);
|
||
fputs_unfiltered ("\n", gdb_stdlog);
|
||
}
|
||
}
|
||
|
||
|
||
/* Print a variable number of ARGS using format FORMAT. If this
|
||
information is going to put the amount written (since the last call
|
||
to REINITIALIZE_MORE_FILTER or the last page break) over the page size,
|
||
call prompt_for_continue to get the users permision to continue.
|
||
|
||
Unlike fprintf, this function does not return a value.
|
||
|
||
We implement three variants, vfprintf (takes a vararg list and stream),
|
||
fprintf (takes a stream to write on), and printf (the usual).
|
||
|
||
Note also that a longjmp to top level may occur in this routine
|
||
(since prompt_for_continue may do so) so this routine should not be
|
||
called when cleanups are not in place. */
|
||
|
||
static void
|
||
vfprintf_maybe_filtered (struct ui_file *stream, const char *format,
|
||
va_list args, int filter)
|
||
{
|
||
char *linebuffer;
|
||
struct cleanup *old_cleanups;
|
||
|
||
linebuffer = xstrvprintf (format, args);
|
||
old_cleanups = make_cleanup (xfree, linebuffer);
|
||
fputs_maybe_filtered (linebuffer, stream, filter);
|
||
do_cleanups (old_cleanups);
|
||
}
|
||
|
||
|
||
void
|
||
vfprintf_filtered (struct ui_file *stream, const char *format, va_list args)
|
||
{
|
||
vfprintf_maybe_filtered (stream, format, args, 1);
|
||
}
|
||
|
||
void
|
||
vfprintf_unfiltered (struct ui_file *stream, const char *format, va_list args)
|
||
{
|
||
char *linebuffer;
|
||
struct cleanup *old_cleanups;
|
||
|
||
linebuffer = xstrvprintf (format, args);
|
||
old_cleanups = make_cleanup (xfree, linebuffer);
|
||
if (debug_timestamp && stream == gdb_stdlog)
|
||
{
|
||
struct timeval tm;
|
||
char *timestamp;
|
||
int len, need_nl;
|
||
|
||
gettimeofday (&tm, NULL);
|
||
|
||
len = strlen (linebuffer);
|
||
need_nl = (len > 0 && linebuffer[len - 1] != '\n');
|
||
|
||
timestamp = xstrprintf ("%ld:%ld %s%s",
|
||
(long) tm.tv_sec, (long) tm.tv_usec,
|
||
linebuffer,
|
||
need_nl ? "\n": "");
|
||
make_cleanup (xfree, timestamp);
|
||
fputs_unfiltered (timestamp, stream);
|
||
}
|
||
else
|
||
fputs_unfiltered (linebuffer, stream);
|
||
do_cleanups (old_cleanups);
|
||
}
|
||
|
||
void
|
||
vprintf_filtered (const char *format, va_list args)
|
||
{
|
||
vfprintf_maybe_filtered (gdb_stdout, format, args, 1);
|
||
}
|
||
|
||
void
|
||
vprintf_unfiltered (const char *format, va_list args)
|
||
{
|
||
vfprintf_unfiltered (gdb_stdout, format, args);
|
||
}
|
||
|
||
void
|
||
fprintf_filtered (struct ui_file *stream, const char *format, ...)
|
||
{
|
||
va_list args;
|
||
|
||
va_start (args, format);
|
||
vfprintf_filtered (stream, format, args);
|
||
va_end (args);
|
||
}
|
||
|
||
void
|
||
fprintf_unfiltered (struct ui_file *stream, const char *format, ...)
|
||
{
|
||
va_list args;
|
||
|
||
va_start (args, format);
|
||
vfprintf_unfiltered (stream, format, args);
|
||
va_end (args);
|
||
}
|
||
|
||
/* Like fprintf_filtered, but prints its result indented.
|
||
Called as fprintfi_filtered (spaces, stream, format, ...); */
|
||
|
||
void
|
||
fprintfi_filtered (int spaces, struct ui_file *stream, const char *format,
|
||
...)
|
||
{
|
||
va_list args;
|
||
|
||
va_start (args, format);
|
||
print_spaces_filtered (spaces, stream);
|
||
|
||
vfprintf_filtered (stream, format, args);
|
||
va_end (args);
|
||
}
|
||
|
||
|
||
void
|
||
printf_filtered (const char *format, ...)
|
||
{
|
||
va_list args;
|
||
|
||
va_start (args, format);
|
||
vfprintf_filtered (gdb_stdout, format, args);
|
||
va_end (args);
|
||
}
|
||
|
||
|
||
void
|
||
printf_unfiltered (const char *format, ...)
|
||
{
|
||
va_list args;
|
||
|
||
va_start (args, format);
|
||
vfprintf_unfiltered (gdb_stdout, format, args);
|
||
va_end (args);
|
||
}
|
||
|
||
/* Like printf_filtered, but prints it's result indented.
|
||
Called as printfi_filtered (spaces, format, ...); */
|
||
|
||
void
|
||
printfi_filtered (int spaces, const char *format, ...)
|
||
{
|
||
va_list args;
|
||
|
||
va_start (args, format);
|
||
print_spaces_filtered (spaces, gdb_stdout);
|
||
vfprintf_filtered (gdb_stdout, format, args);
|
||
va_end (args);
|
||
}
|
||
|
||
/* Easy -- but watch out!
|
||
|
||
This routine is *not* a replacement for puts()! puts() appends a newline.
|
||
This one doesn't, and had better not! */
|
||
|
||
void
|
||
puts_filtered (const char *string)
|
||
{
|
||
fputs_filtered (string, gdb_stdout);
|
||
}
|
||
|
||
void
|
||
puts_unfiltered (const char *string)
|
||
{
|
||
fputs_unfiltered (string, gdb_stdout);
|
||
}
|
||
|
||
/* Return a pointer to N spaces and a null. The pointer is good
|
||
until the next call to here. */
|
||
char *
|
||
n_spaces (int n)
|
||
{
|
||
char *t;
|
||
static char *spaces = 0;
|
||
static int max_spaces = -1;
|
||
|
||
if (n > max_spaces)
|
||
{
|
||
if (spaces)
|
||
xfree (spaces);
|
||
spaces = (char *) xmalloc (n + 1);
|
||
for (t = spaces + n; t != spaces;)
|
||
*--t = ' ';
|
||
spaces[n] = '\0';
|
||
max_spaces = n;
|
||
}
|
||
|
||
return spaces + max_spaces - n;
|
||
}
|
||
|
||
/* Print N spaces. */
|
||
void
|
||
print_spaces_filtered (int n, struct ui_file *stream)
|
||
{
|
||
fputs_filtered (n_spaces (n), stream);
|
||
}
|
||
|
||
/* C++/ObjC demangler stuff. */
|
||
|
||
/* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language
|
||
LANG, using demangling args ARG_MODE, and print it filtered to STREAM.
|
||
If the name is not mangled, or the language for the name is unknown, or
|
||
demangling is off, the name is printed in its "raw" form. */
|
||
|
||
void
|
||
fprintf_symbol_filtered (struct ui_file *stream, const char *name,
|
||
enum language lang, int arg_mode)
|
||
{
|
||
char *demangled;
|
||
|
||
if (name != NULL)
|
||
{
|
||
/* If user wants to see raw output, no problem. */
|
||
if (!demangle)
|
||
{
|
||
fputs_filtered (name, stream);
|
||
}
|
||
else
|
||
{
|
||
demangled = language_demangle (language_def (lang), name, arg_mode);
|
||
fputs_filtered (demangled ? demangled : name, stream);
|
||
if (demangled != NULL)
|
||
{
|
||
xfree (demangled);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Do a strcmp() type operation on STRING1 and STRING2, ignoring any
|
||
differences in whitespace. Returns 0 if they match, non-zero if they
|
||
don't (slightly different than strcmp()'s range of return values).
|
||
|
||
As an extra hack, string1=="FOO(ARGS)" matches string2=="FOO".
|
||
This "feature" is useful when searching for matching C++ function names
|
||
(such as if the user types 'break FOO', where FOO is a mangled C++
|
||
function). */
|
||
|
||
int
|
||
strcmp_iw (const char *string1, const char *string2)
|
||
{
|
||
while ((*string1 != '\0') && (*string2 != '\0'))
|
||
{
|
||
while (isspace (*string1))
|
||
{
|
||
string1++;
|
||
}
|
||
while (isspace (*string2))
|
||
{
|
||
string2++;
|
||
}
|
||
if (case_sensitivity == case_sensitive_on && *string1 != *string2)
|
||
break;
|
||
if (case_sensitivity == case_sensitive_off
|
||
&& (tolower ((unsigned char) *string1)
|
||
!= tolower ((unsigned char) *string2)))
|
||
break;
|
||
if (*string1 != '\0')
|
||
{
|
||
string1++;
|
||
string2++;
|
||
}
|
||
}
|
||
return (*string1 != '\0' && *string1 != '(') || (*string2 != '\0');
|
||
}
|
||
|
||
/* This is like strcmp except that it ignores whitespace and treats
|
||
'(' as the first non-NULL character in terms of ordering. Like
|
||
strcmp (and unlike strcmp_iw), it returns negative if STRING1 <
|
||
STRING2, 0 if STRING2 = STRING2, and positive if STRING1 > STRING2
|
||
according to that ordering.
|
||
|
||
If a list is sorted according to this function and if you want to
|
||
find names in the list that match some fixed NAME according to
|
||
strcmp_iw(LIST_ELT, NAME), then the place to start looking is right
|
||
where this function would put NAME.
|
||
|
||
This function must be neutral to the CASE_SENSITIVITY setting as the user
|
||
may choose it during later lookup. Therefore this function always sorts
|
||
primarily case-insensitively and secondarily case-sensitively.
|
||
|
||
Here are some examples of why using strcmp to sort is a bad idea:
|
||
|
||
Whitespace example:
|
||
|
||
Say your partial symtab contains: "foo<char *>", "goo". Then, if
|
||
we try to do a search for "foo<char*>", strcmp will locate this
|
||
after "foo<char *>" and before "goo". Then lookup_partial_symbol
|
||
will start looking at strings beginning with "goo", and will never
|
||
see the correct match of "foo<char *>".
|
||
|
||
Parenthesis example:
|
||
|
||
In practice, this is less like to be an issue, but I'll give it a
|
||
shot. Let's assume that '$' is a legitimate character to occur in
|
||
symbols. (Which may well even be the case on some systems.) Then
|
||
say that the partial symbol table contains "foo$" and "foo(int)".
|
||
strcmp will put them in this order, since '$' < '('. Now, if the
|
||
user searches for "foo", then strcmp will sort "foo" before "foo$".
|
||
Then lookup_partial_symbol will notice that strcmp_iw("foo$",
|
||
"foo") is false, so it won't proceed to the actual match of
|
||
"foo(int)" with "foo". */
|
||
|
||
int
|
||
strcmp_iw_ordered (const char *string1, const char *string2)
|
||
{
|
||
const char *saved_string1 = string1, *saved_string2 = string2;
|
||
enum case_sensitivity case_pass = case_sensitive_off;
|
||
|
||
for (;;)
|
||
{
|
||
/* C1 and C2 are valid only if *string1 != '\0' && *string2 != '\0'.
|
||
Provide stub characters if we are already at the end of one of the
|
||
strings. */
|
||
char c1 = 'X', c2 = 'X';
|
||
|
||
while (*string1 != '\0' && *string2 != '\0')
|
||
{
|
||
while (isspace (*string1))
|
||
string1++;
|
||
while (isspace (*string2))
|
||
string2++;
|
||
|
||
switch (case_pass)
|
||
{
|
||
case case_sensitive_off:
|
||
c1 = tolower ((unsigned char) *string1);
|
||
c2 = tolower ((unsigned char) *string2);
|
||
break;
|
||
case case_sensitive_on:
|
||
c1 = *string1;
|
||
c2 = *string2;
|
||
break;
|
||
}
|
||
if (c1 != c2)
|
||
break;
|
||
|
||
if (*string1 != '\0')
|
||
{
|
||
string1++;
|
||
string2++;
|
||
}
|
||
}
|
||
|
||
switch (*string1)
|
||
{
|
||
/* Characters are non-equal unless they're both '\0'; we want to
|
||
make sure we get the comparison right according to our
|
||
comparison in the cases where one of them is '\0' or '('. */
|
||
case '\0':
|
||
if (*string2 == '\0')
|
||
break;
|
||
else
|
||
return -1;
|
||
case '(':
|
||
if (*string2 == '\0')
|
||
return 1;
|
||
else
|
||
return -1;
|
||
default:
|
||
if (*string2 == '\0' || *string2 == '(')
|
||
return 1;
|
||
else if (c1 > c2)
|
||
return 1;
|
||
else if (c1 < c2)
|
||
return -1;
|
||
/* PASSTHRU */
|
||
}
|
||
|
||
if (case_pass == case_sensitive_on)
|
||
return 0;
|
||
|
||
/* Otherwise the strings were equal in case insensitive way, make
|
||
a more fine grained comparison in a case sensitive way. */
|
||
|
||
case_pass = case_sensitive_on;
|
||
string1 = saved_string1;
|
||
string2 = saved_string2;
|
||
}
|
||
}
|
||
|
||
/* A simple comparison function with opposite semantics to strcmp. */
|
||
|
||
int
|
||
streq (const char *lhs, const char *rhs)
|
||
{
|
||
return !strcmp (lhs, rhs);
|
||
}
|
||
|
||
|
||
/*
|
||
** subset_compare()
|
||
** Answer whether string_to_compare is a full or partial match to
|
||
** template_string. The partial match must be in sequence starting
|
||
** at index 0.
|
||
*/
|
||
int
|
||
subset_compare (char *string_to_compare, char *template_string)
|
||
{
|
||
int match;
|
||
|
||
if (template_string != (char *) NULL && string_to_compare != (char *) NULL
|
||
&& strlen (string_to_compare) <= strlen (template_string))
|
||
match =
|
||
(startswith (template_string, string_to_compare));
|
||
else
|
||
match = 0;
|
||
return match;
|
||
}
|
||
|
||
static void
|
||
pagination_on_command (char *arg, int from_tty)
|
||
{
|
||
pagination_enabled = 1;
|
||
}
|
||
|
||
static void
|
||
pagination_off_command (char *arg, int from_tty)
|
||
{
|
||
pagination_enabled = 0;
|
||
}
|
||
|
||
static void
|
||
show_debug_timestamp (struct ui_file *file, int from_tty,
|
||
struct cmd_list_element *c, const char *value)
|
||
{
|
||
fprintf_filtered (file, _("Timestamping debugging messages is %s.\n"),
|
||
value);
|
||
}
|
||
|
||
|
||
void
|
||
initialize_utils (void)
|
||
{
|
||
add_setshow_uinteger_cmd ("width", class_support, &chars_per_line, _("\
|
||
Set number of characters where GDB should wrap lines of its output."), _("\
|
||
Show number of characters where GDB should wrap lines of its output."), _("\
|
||
This affects where GDB wraps its output to fit the screen width.\n\
|
||
Setting this to \"unlimited\" or zero prevents GDB from wrapping its output."),
|
||
set_width_command,
|
||
show_chars_per_line,
|
||
&setlist, &showlist);
|
||
|
||
add_setshow_uinteger_cmd ("height", class_support, &lines_per_page, _("\
|
||
Set number of lines in a page for GDB output pagination."), _("\
|
||
Show number of lines in a page for GDB output pagination."), _("\
|
||
This affects the number of lines after which GDB will pause\n\
|
||
its output and ask you whether to continue.\n\
|
||
Setting this to \"unlimited\" or zero causes GDB never pause during output."),
|
||
set_height_command,
|
||
show_lines_per_page,
|
||
&setlist, &showlist);
|
||
|
||
init_page_info ();
|
||
|
||
add_setshow_boolean_cmd ("pagination", class_support,
|
||
&pagination_enabled, _("\
|
||
Set state of GDB output pagination."), _("\
|
||
Show state of GDB output pagination."), _("\
|
||
When pagination is ON, GDB pauses at end of each screenful of\n\
|
||
its output and asks you whether to continue.\n\
|
||
Turning pagination off is an alternative to \"set height unlimited\"."),
|
||
NULL,
|
||
show_pagination_enabled,
|
||
&setlist, &showlist);
|
||
|
||
if (xdb_commands)
|
||
{
|
||
add_com ("am", class_support, pagination_on_command,
|
||
_("Enable pagination"));
|
||
add_com ("sm", class_support, pagination_off_command,
|
||
_("Disable pagination"));
|
||
}
|
||
|
||
add_setshow_boolean_cmd ("sevenbit-strings", class_support,
|
||
&sevenbit_strings, _("\
|
||
Set printing of 8-bit characters in strings as \\nnn."), _("\
|
||
Show printing of 8-bit characters in strings as \\nnn."), NULL,
|
||
NULL,
|
||
show_sevenbit_strings,
|
||
&setprintlist, &showprintlist);
|
||
|
||
add_setshow_boolean_cmd ("timestamp", class_maintenance,
|
||
&debug_timestamp, _("\
|
||
Set timestamping of debugging messages."), _("\
|
||
Show timestamping of debugging messages."), _("\
|
||
When set, debugging messages will be marked with seconds and microseconds."),
|
||
NULL,
|
||
show_debug_timestamp,
|
||
&setdebuglist, &showdebuglist);
|
||
}
|
||
|
||
const char *
|
||
paddress (struct gdbarch *gdbarch, CORE_ADDR addr)
|
||
{
|
||
/* Truncate address to the size of a target address, avoiding shifts
|
||
larger or equal than the width of a CORE_ADDR. The local
|
||
variable ADDR_BIT stops the compiler reporting a shift overflow
|
||
when it won't occur. */
|
||
/* NOTE: This assumes that the significant address information is
|
||
kept in the least significant bits of ADDR - the upper bits were
|
||
either zero or sign extended. Should gdbarch_address_to_pointer or
|
||
some ADDRESS_TO_PRINTABLE() be used to do the conversion? */
|
||
|
||
int addr_bit = gdbarch_addr_bit (gdbarch);
|
||
|
||
if (addr_bit < (sizeof (CORE_ADDR) * HOST_CHAR_BIT))
|
||
addr &= ((CORE_ADDR) 1 << addr_bit) - 1;
|
||
return hex_string (addr);
|
||
}
|
||
|
||
/* This function is described in "defs.h". */
|
||
|
||
const char *
|
||
print_core_address (struct gdbarch *gdbarch, CORE_ADDR address)
|
||
{
|
||
int addr_bit = gdbarch_addr_bit (gdbarch);
|
||
|
||
if (addr_bit < (sizeof (CORE_ADDR) * HOST_CHAR_BIT))
|
||
address &= ((CORE_ADDR) 1 << addr_bit) - 1;
|
||
|
||
/* FIXME: cagney/2002-05-03: Need local_address_string() function
|
||
that returns the language localized string formatted to a width
|
||
based on gdbarch_addr_bit. */
|
||
if (addr_bit <= 32)
|
||
return hex_string_custom (address, 8);
|
||
else
|
||
return hex_string_custom (address, 16);
|
||
}
|
||
|
||
/* Callback hash_f for htab_create_alloc or htab_create_alloc_ex. */
|
||
|
||
hashval_t
|
||
core_addr_hash (const void *ap)
|
||
{
|
||
const CORE_ADDR *addrp = ap;
|
||
|
||
return *addrp;
|
||
}
|
||
|
||
/* Callback eq_f for htab_create_alloc or htab_create_alloc_ex. */
|
||
|
||
int
|
||
core_addr_eq (const void *ap, const void *bp)
|
||
{
|
||
const CORE_ADDR *addr_ap = ap;
|
||
const CORE_ADDR *addr_bp = bp;
|
||
|
||
return *addr_ap == *addr_bp;
|
||
}
|
||
|
||
/* Convert a string back into a CORE_ADDR. */
|
||
CORE_ADDR
|
||
string_to_core_addr (const char *my_string)
|
||
{
|
||
CORE_ADDR addr = 0;
|
||
|
||
if (my_string[0] == '0' && tolower (my_string[1]) == 'x')
|
||
{
|
||
/* Assume that it is in hex. */
|
||
int i;
|
||
|
||
for (i = 2; my_string[i] != '\0'; i++)
|
||
{
|
||
if (isdigit (my_string[i]))
|
||
addr = (my_string[i] - '0') + (addr * 16);
|
||
else if (isxdigit (my_string[i]))
|
||
addr = (tolower (my_string[i]) - 'a' + 0xa) + (addr * 16);
|
||
else
|
||
error (_("invalid hex \"%s\""), my_string);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
/* Assume that it is in decimal. */
|
||
int i;
|
||
|
||
for (i = 0; my_string[i] != '\0'; i++)
|
||
{
|
||
if (isdigit (my_string[i]))
|
||
addr = (my_string[i] - '0') + (addr * 10);
|
||
else
|
||
error (_("invalid decimal \"%s\""), my_string);
|
||
}
|
||
}
|
||
|
||
return addr;
|
||
}
|
||
|
||
char *
|
||
gdb_realpath (const char *filename)
|
||
{
|
||
/* On most hosts, we rely on canonicalize_file_name to compute
|
||
the FILENAME's realpath.
|
||
|
||
But the situation is slightly more complex on Windows, due to some
|
||
versions of GCC which were reported to generate paths where
|
||
backlashes (the directory separator) were doubled. For instance:
|
||
c:\\some\\double\\slashes\\dir
|
||
... instead of ...
|
||
c:\some\double\slashes\dir
|
||
Those double-slashes were getting in the way when comparing paths,
|
||
for instance when trying to insert a breakpoint as follow:
|
||
(gdb) b c:/some/double/slashes/dir/foo.c:4
|
||
No source file named c:/some/double/slashes/dir/foo.c:4.
|
||
(gdb) b c:\some\double\slashes\dir\foo.c:4
|
||
No source file named c:\some\double\slashes\dir\foo.c:4.
|
||
To prevent this from happening, we need this function to always
|
||
strip those extra backslashes. While canonicalize_file_name does
|
||
perform this simplification, it only works when the path is valid.
|
||
Since the simplification would be useful even if the path is not
|
||
valid (one can always set a breakpoint on a file, even if the file
|
||
does not exist locally), we rely instead on GetFullPathName to
|
||
perform the canonicalization. */
|
||
|
||
#if defined (_WIN32)
|
||
{
|
||
char buf[MAX_PATH];
|
||
DWORD len = GetFullPathName (filename, MAX_PATH, buf, NULL);
|
||
|
||
/* The file system is case-insensitive but case-preserving.
|
||
So it is important we do not lowercase the path. Otherwise,
|
||
we might not be able to display the original casing in a given
|
||
path. */
|
||
if (len > 0 && len < MAX_PATH)
|
||
return xstrdup (buf);
|
||
}
|
||
#else
|
||
{
|
||
char *rp = canonicalize_file_name (filename);
|
||
|
||
if (rp != NULL)
|
||
return rp;
|
||
}
|
||
#endif
|
||
|
||
/* This system is a lost cause, just dup the buffer. */
|
||
return xstrdup (filename);
|
||
}
|
||
|
||
/* Return a copy of FILENAME, with its directory prefix canonicalized
|
||
by gdb_realpath. */
|
||
|
||
char *
|
||
gdb_realpath_keepfile (const char *filename)
|
||
{
|
||
const char *base_name = lbasename (filename);
|
||
char *dir_name;
|
||
char *real_path;
|
||
char *result;
|
||
|
||
/* Extract the basename of filename, and return immediately
|
||
a copy of filename if it does not contain any directory prefix. */
|
||
if (base_name == filename)
|
||
return xstrdup (filename);
|
||
|
||
dir_name = alloca ((size_t) (base_name - filename + 2));
|
||
/* Allocate enough space to store the dir_name + plus one extra
|
||
character sometimes needed under Windows (see below), and
|
||
then the closing \000 character. */
|
||
strncpy (dir_name, filename, base_name - filename);
|
||
dir_name[base_name - filename] = '\000';
|
||
|
||
#ifdef HAVE_DOS_BASED_FILE_SYSTEM
|
||
/* We need to be careful when filename is of the form 'd:foo', which
|
||
is equivalent of d:./foo, which is totally different from d:/foo. */
|
||
if (strlen (dir_name) == 2 && isalpha (dir_name[0]) && dir_name[1] == ':')
|
||
{
|
||
dir_name[2] = '.';
|
||
dir_name[3] = '\000';
|
||
}
|
||
#endif
|
||
|
||
/* Canonicalize the directory prefix, and build the resulting
|
||
filename. If the dirname realpath already contains an ending
|
||
directory separator, avoid doubling it. */
|
||
real_path = gdb_realpath (dir_name);
|
||
if (IS_DIR_SEPARATOR (real_path[strlen (real_path) - 1]))
|
||
result = concat (real_path, base_name, (char *) NULL);
|
||
else
|
||
result = concat (real_path, SLASH_STRING, base_name, (char *) NULL);
|
||
|
||
xfree (real_path);
|
||
return result;
|
||
}
|
||
|
||
/* Return PATH in absolute form, performing tilde-expansion if necessary.
|
||
PATH cannot be NULL or the empty string.
|
||
This does not resolve symlinks however, use gdb_realpath for that.
|
||
Space for the result is allocated with malloc.
|
||
If the path is already absolute, it is strdup'd.
|
||
If there is a problem computing the absolute path, the path is returned
|
||
unchanged (still strdup'd). */
|
||
|
||
char *
|
||
gdb_abspath (const char *path)
|
||
{
|
||
gdb_assert (path != NULL && path[0] != '\0');
|
||
|
||
if (path[0] == '~')
|
||
return tilde_expand (path);
|
||
|
||
if (IS_ABSOLUTE_PATH (path))
|
||
return xstrdup (path);
|
||
|
||
/* Beware the // my son, the Emacs barfs, the botch that catch... */
|
||
return concat (current_directory,
|
||
IS_DIR_SEPARATOR (current_directory[strlen (current_directory) - 1])
|
||
? "" : SLASH_STRING,
|
||
path, (char *) NULL);
|
||
}
|
||
|
||
ULONGEST
|
||
align_up (ULONGEST v, int n)
|
||
{
|
||
/* Check that N is really a power of two. */
|
||
gdb_assert (n && (n & (n-1)) == 0);
|
||
return (v + n - 1) & -n;
|
||
}
|
||
|
||
ULONGEST
|
||
align_down (ULONGEST v, int n)
|
||
{
|
||
/* Check that N is really a power of two. */
|
||
gdb_assert (n && (n & (n-1)) == 0);
|
||
return (v & -n);
|
||
}
|
||
|
||
/* Allocation function for the libiberty hash table which uses an
|
||
obstack. The obstack is passed as DATA. */
|
||
|
||
void *
|
||
hashtab_obstack_allocate (void *data, size_t size, size_t count)
|
||
{
|
||
size_t total = size * count;
|
||
void *ptr = obstack_alloc ((struct obstack *) data, total);
|
||
|
||
memset (ptr, 0, total);
|
||
return ptr;
|
||
}
|
||
|
||
/* Trivial deallocation function for the libiberty splay tree and hash
|
||
table - don't deallocate anything. Rely on later deletion of the
|
||
obstack. DATA will be the obstack, although it is not needed
|
||
here. */
|
||
|
||
void
|
||
dummy_obstack_deallocate (void *object, void *data)
|
||
{
|
||
return;
|
||
}
|
||
|
||
/* The bit offset of the highest byte in a ULONGEST, for overflow
|
||
checking. */
|
||
|
||
#define HIGH_BYTE_POSN ((sizeof (ULONGEST) - 1) * HOST_CHAR_BIT)
|
||
|
||
/* True (non-zero) iff DIGIT is a valid digit in radix BASE,
|
||
where 2 <= BASE <= 36. */
|
||
|
||
static int
|
||
is_digit_in_base (unsigned char digit, int base)
|
||
{
|
||
if (!isalnum (digit))
|
||
return 0;
|
||
if (base <= 10)
|
||
return (isdigit (digit) && digit < base + '0');
|
||
else
|
||
return (isdigit (digit) || tolower (digit) < base - 10 + 'a');
|
||
}
|
||
|
||
static int
|
||
digit_to_int (unsigned char c)
|
||
{
|
||
if (isdigit (c))
|
||
return c - '0';
|
||
else
|
||
return tolower (c) - 'a' + 10;
|
||
}
|
||
|
||
/* As for strtoul, but for ULONGEST results. */
|
||
|
||
ULONGEST
|
||
strtoulst (const char *num, const char **trailer, int base)
|
||
{
|
||
unsigned int high_part;
|
||
ULONGEST result;
|
||
int minus = 0;
|
||
int i = 0;
|
||
|
||
/* Skip leading whitespace. */
|
||
while (isspace (num[i]))
|
||
i++;
|
||
|
||
/* Handle prefixes. */
|
||
if (num[i] == '+')
|
||
i++;
|
||
else if (num[i] == '-')
|
||
{
|
||
minus = 1;
|
||
i++;
|
||
}
|
||
|
||
if (base == 0 || base == 16)
|
||
{
|
||
if (num[i] == '0' && (num[i + 1] == 'x' || num[i + 1] == 'X'))
|
||
{
|
||
i += 2;
|
||
if (base == 0)
|
||
base = 16;
|
||
}
|
||
}
|
||
|
||
if (base == 0 && num[i] == '0')
|
||
base = 8;
|
||
|
||
if (base == 0)
|
||
base = 10;
|
||
|
||
if (base < 2 || base > 36)
|
||
{
|
||
errno = EINVAL;
|
||
return 0;
|
||
}
|
||
|
||
result = high_part = 0;
|
||
for (; is_digit_in_base (num[i], base); i += 1)
|
||
{
|
||
result = result * base + digit_to_int (num[i]);
|
||
high_part = high_part * base + (unsigned int) (result >> HIGH_BYTE_POSN);
|
||
result &= ((ULONGEST) 1 << HIGH_BYTE_POSN) - 1;
|
||
if (high_part > 0xff)
|
||
{
|
||
errno = ERANGE;
|
||
result = ~ (ULONGEST) 0;
|
||
high_part = 0;
|
||
minus = 0;
|
||
break;
|
||
}
|
||
}
|
||
|
||
if (trailer != NULL)
|
||
*trailer = &num[i];
|
||
|
||
result = result + ((ULONGEST) high_part << HIGH_BYTE_POSN);
|
||
if (minus)
|
||
return -result;
|
||
else
|
||
return result;
|
||
}
|
||
|
||
/* Simple, portable version of dirname that does not modify its
|
||
argument. */
|
||
|
||
char *
|
||
ldirname (const char *filename)
|
||
{
|
||
const char *base = lbasename (filename);
|
||
char *dirname;
|
||
|
||
while (base > filename && IS_DIR_SEPARATOR (base[-1]))
|
||
--base;
|
||
|
||
if (base == filename)
|
||
return NULL;
|
||
|
||
dirname = xmalloc (base - filename + 2);
|
||
memcpy (dirname, filename, base - filename);
|
||
|
||
/* On DOS based file systems, convert "d:foo" to "d:.", so that we
|
||
create "d:./bar" later instead of the (different) "d:/bar". */
|
||
if (base - filename == 2 && IS_ABSOLUTE_PATH (base)
|
||
&& !IS_DIR_SEPARATOR (filename[0]))
|
||
dirname[base++ - filename] = '.';
|
||
|
||
dirname[base - filename] = '\0';
|
||
return dirname;
|
||
}
|
||
|
||
/* Call libiberty's buildargv, and return the result.
|
||
If buildargv fails due to out-of-memory, call nomem.
|
||
Therefore, the returned value is guaranteed to be non-NULL,
|
||
unless the parameter itself is NULL. */
|
||
|
||
char **
|
||
gdb_buildargv (const char *s)
|
||
{
|
||
char **argv = buildargv (s);
|
||
|
||
if (s != NULL && argv == NULL)
|
||
malloc_failure (0);
|
||
return argv;
|
||
}
|
||
|
||
int
|
||
compare_positive_ints (const void *ap, const void *bp)
|
||
{
|
||
/* Because we know we're comparing two ints which are positive,
|
||
there's no danger of overflow here. */
|
||
return * (int *) ap - * (int *) bp;
|
||
}
|
||
|
||
/* String compare function for qsort. */
|
||
|
||
int
|
||
compare_strings (const void *arg1, const void *arg2)
|
||
{
|
||
const char **s1 = (const char **) arg1;
|
||
const char **s2 = (const char **) arg2;
|
||
|
||
return strcmp (*s1, *s2);
|
||
}
|
||
|
||
#define AMBIGUOUS_MESS1 ".\nMatching formats:"
|
||
#define AMBIGUOUS_MESS2 \
|
||
".\nUse \"set gnutarget format-name\" to specify the format."
|
||
|
||
const char *
|
||
gdb_bfd_errmsg (bfd_error_type error_tag, char **matching)
|
||
{
|
||
char *ret, *retp;
|
||
int ret_len;
|
||
char **p;
|
||
|
||
/* Check if errmsg just need simple return. */
|
||
if (error_tag != bfd_error_file_ambiguously_recognized || matching == NULL)
|
||
return bfd_errmsg (error_tag);
|
||
|
||
ret_len = strlen (bfd_errmsg (error_tag)) + strlen (AMBIGUOUS_MESS1)
|
||
+ strlen (AMBIGUOUS_MESS2);
|
||
for (p = matching; *p; p++)
|
||
ret_len += strlen (*p) + 1;
|
||
ret = xmalloc (ret_len + 1);
|
||
retp = ret;
|
||
make_cleanup (xfree, ret);
|
||
|
||
strcpy (retp, bfd_errmsg (error_tag));
|
||
retp += strlen (retp);
|
||
|
||
strcpy (retp, AMBIGUOUS_MESS1);
|
||
retp += strlen (retp);
|
||
|
||
for (p = matching; *p; p++)
|
||
{
|
||
sprintf (retp, " %s", *p);
|
||
retp += strlen (retp);
|
||
}
|
||
xfree (matching);
|
||
|
||
strcpy (retp, AMBIGUOUS_MESS2);
|
||
|
||
return ret;
|
||
}
|
||
|
||
/* Return ARGS parsed as a valid pid, or throw an error. */
|
||
|
||
int
|
||
parse_pid_to_attach (const char *args)
|
||
{
|
||
unsigned long pid;
|
||
char *dummy;
|
||
|
||
if (!args)
|
||
error_no_arg (_("process-id to attach"));
|
||
|
||
dummy = (char *) args;
|
||
pid = strtoul (args, &dummy, 0);
|
||
/* Some targets don't set errno on errors, grrr! */
|
||
if ((pid == 0 && dummy == args) || dummy != &args[strlen (args)])
|
||
error (_("Illegal process-id: %s."), args);
|
||
|
||
return pid;
|
||
}
|
||
|
||
/* Helper for make_bpstat_clear_actions_cleanup. */
|
||
|
||
static void
|
||
do_bpstat_clear_actions_cleanup (void *unused)
|
||
{
|
||
bpstat_clear_actions ();
|
||
}
|
||
|
||
/* Call bpstat_clear_actions for the case an exception is throw. You should
|
||
discard_cleanups if no exception is caught. */
|
||
|
||
struct cleanup *
|
||
make_bpstat_clear_actions_cleanup (void)
|
||
{
|
||
return make_cleanup (do_bpstat_clear_actions_cleanup, NULL);
|
||
}
|
||
|
||
/* Check for GCC >= 4.x according to the symtab->producer string. Return minor
|
||
version (x) of 4.x in such case. If it is not GCC or it is GCC older than
|
||
4.x return -1. If it is GCC 5.x or higher return INT_MAX. */
|
||
|
||
int
|
||
producer_is_gcc_ge_4 (const char *producer)
|
||
{
|
||
int major, minor;
|
||
|
||
if (! producer_is_gcc (producer, &major, &minor))
|
||
return -1;
|
||
if (major < 4)
|
||
return -1;
|
||
if (major > 4)
|
||
return INT_MAX;
|
||
return minor;
|
||
}
|
||
|
||
/* Returns nonzero if the given PRODUCER string is GCC and sets the MAJOR
|
||
and MINOR versions when not NULL. Returns zero if the given PRODUCER
|
||
is NULL or it isn't GCC. */
|
||
|
||
int
|
||
producer_is_gcc (const char *producer, int *major, int *minor)
|
||
{
|
||
const char *cs;
|
||
|
||
if (producer != NULL && startswith (producer, "GNU "))
|
||
{
|
||
int maj, min;
|
||
|
||
if (major == NULL)
|
||
major = &maj;
|
||
if (minor == NULL)
|
||
minor = &min;
|
||
|
||
/* Skip any identifier after "GNU " - such as "C11" "C++" or "Java".
|
||
A full producer string might look like:
|
||
"GNU C 4.7.2"
|
||
"GNU Fortran 4.8.2 20140120 (Red Hat 4.8.2-16) -mtune=generic ..."
|
||
"GNU C++14 5.0.0 20150123 (experimental)"
|
||
*/
|
||
cs = &producer[strlen ("GNU ")];
|
||
while (*cs && !isspace (*cs))
|
||
cs++;
|
||
if (*cs && isspace (*cs))
|
||
cs++;
|
||
if (sscanf (cs, "%d.%d", major, minor) == 2)
|
||
return 1;
|
||
}
|
||
|
||
/* Not recognized as GCC. */
|
||
return 0;
|
||
}
|
||
|
||
/* Helper for make_cleanup_free_char_ptr_vec. */
|
||
|
||
static void
|
||
do_free_char_ptr_vec (void *arg)
|
||
{
|
||
VEC (char_ptr) *char_ptr_vec = arg;
|
||
|
||
free_char_ptr_vec (char_ptr_vec);
|
||
}
|
||
|
||
/* Make cleanup handler calling xfree for each element of CHAR_PTR_VEC and
|
||
final VEC_free for CHAR_PTR_VEC itself.
|
||
|
||
You must not modify CHAR_PTR_VEC after this cleanup registration as the
|
||
CHAR_PTR_VEC base address may change on its updates. Contrary to VEC_free
|
||
this function does not (cannot) clear the pointer. */
|
||
|
||
struct cleanup *
|
||
make_cleanup_free_char_ptr_vec (VEC (char_ptr) *char_ptr_vec)
|
||
{
|
||
return make_cleanup (do_free_char_ptr_vec, char_ptr_vec);
|
||
}
|
||
|
||
/* Substitute all occurences of string FROM by string TO in *STRINGP. *STRINGP
|
||
must come from xrealloc-compatible allocator and it may be updated. FROM
|
||
needs to be delimited by IS_DIR_SEPARATOR or DIRNAME_SEPARATOR (or be
|
||
located at the start or end of *STRINGP. */
|
||
|
||
void
|
||
substitute_path_component (char **stringp, const char *from, const char *to)
|
||
{
|
||
char *string = *stringp, *s;
|
||
const size_t from_len = strlen (from);
|
||
const size_t to_len = strlen (to);
|
||
|
||
for (s = string;;)
|
||
{
|
||
s = strstr (s, from);
|
||
if (s == NULL)
|
||
break;
|
||
|
||
if ((s == string || IS_DIR_SEPARATOR (s[-1])
|
||
|| s[-1] == DIRNAME_SEPARATOR)
|
||
&& (s[from_len] == '\0' || IS_DIR_SEPARATOR (s[from_len])
|
||
|| s[from_len] == DIRNAME_SEPARATOR))
|
||
{
|
||
char *string_new;
|
||
|
||
string_new = xrealloc (string, (strlen (string) + to_len + 1));
|
||
|
||
/* Relocate the current S pointer. */
|
||
s = s - string + string_new;
|
||
string = string_new;
|
||
|
||
/* Replace from by to. */
|
||
memmove (&s[to_len], &s[from_len], strlen (&s[from_len]) + 1);
|
||
memcpy (s, to, to_len);
|
||
|
||
s += to_len;
|
||
}
|
||
else
|
||
s++;
|
||
}
|
||
|
||
*stringp = string;
|
||
}
|
||
|
||
#ifdef HAVE_WAITPID
|
||
|
||
#ifdef SIGALRM
|
||
|
||
/* SIGALRM handler for waitpid_with_timeout. */
|
||
|
||
static void
|
||
sigalrm_handler (int signo)
|
||
{
|
||
/* Nothing to do. */
|
||
}
|
||
|
||
#endif
|
||
|
||
/* Wrapper to wait for child PID to die with TIMEOUT.
|
||
TIMEOUT is the time to stop waiting in seconds.
|
||
If TIMEOUT is zero, pass WNOHANG to waitpid.
|
||
Returns PID if it was successfully waited for, otherwise -1.
|
||
|
||
Timeouts are currently implemented with alarm and SIGALRM.
|
||
If the host does not support them, this waits "forever".
|
||
It would be odd though for a host to have waitpid and not SIGALRM. */
|
||
|
||
pid_t
|
||
wait_to_die_with_timeout (pid_t pid, int *status, int timeout)
|
||
{
|
||
pid_t waitpid_result;
|
||
|
||
gdb_assert (pid > 0);
|
||
gdb_assert (timeout >= 0);
|
||
|
||
if (timeout > 0)
|
||
{
|
||
#ifdef SIGALRM
|
||
#if defined (HAVE_SIGACTION) && defined (SA_RESTART)
|
||
struct sigaction sa, old_sa;
|
||
|
||
sa.sa_handler = sigalrm_handler;
|
||
sigemptyset (&sa.sa_mask);
|
||
sa.sa_flags = 0;
|
||
sigaction (SIGALRM, &sa, &old_sa);
|
||
#else
|
||
void (*ofunc) ();
|
||
|
||
ofunc = (void (*)()) signal (SIGALRM, sigalrm_handler);
|
||
#endif
|
||
|
||
alarm (timeout);
|
||
#endif
|
||
|
||
waitpid_result = waitpid (pid, status, 0);
|
||
|
||
#ifdef SIGALRM
|
||
alarm (0);
|
||
#if defined (HAVE_SIGACTION) && defined (SA_RESTART)
|
||
sigaction (SIGALRM, &old_sa, NULL);
|
||
#else
|
||
signal (SIGALRM, ofunc);
|
||
#endif
|
||
#endif
|
||
}
|
||
else
|
||
waitpid_result = waitpid (pid, status, WNOHANG);
|
||
|
||
if (waitpid_result == pid)
|
||
return pid;
|
||
else
|
||
return -1;
|
||
}
|
||
|
||
#endif /* HAVE_WAITPID */
|
||
|
||
/* Provide fnmatch compatible function for FNM_FILE_NAME matching of host files.
|
||
Both FNM_FILE_NAME and FNM_NOESCAPE must be set in FLAGS.
|
||
|
||
It handles correctly HAVE_DOS_BASED_FILE_SYSTEM and
|
||
HAVE_CASE_INSENSITIVE_FILE_SYSTEM. */
|
||
|
||
int
|
||
gdb_filename_fnmatch (const char *pattern, const char *string, int flags)
|
||
{
|
||
gdb_assert ((flags & FNM_FILE_NAME) != 0);
|
||
|
||
/* It is unclear how '\' escaping vs. directory separator should coexist. */
|
||
gdb_assert ((flags & FNM_NOESCAPE) != 0);
|
||
|
||
#ifdef HAVE_DOS_BASED_FILE_SYSTEM
|
||
{
|
||
char *pattern_slash, *string_slash;
|
||
|
||
/* Replace '\' by '/' in both strings. */
|
||
|
||
pattern_slash = alloca (strlen (pattern) + 1);
|
||
strcpy (pattern_slash, pattern);
|
||
pattern = pattern_slash;
|
||
for (; *pattern_slash != 0; pattern_slash++)
|
||
if (IS_DIR_SEPARATOR (*pattern_slash))
|
||
*pattern_slash = '/';
|
||
|
||
string_slash = alloca (strlen (string) + 1);
|
||
strcpy (string_slash, string);
|
||
string = string_slash;
|
||
for (; *string_slash != 0; string_slash++)
|
||
if (IS_DIR_SEPARATOR (*string_slash))
|
||
*string_slash = '/';
|
||
}
|
||
#endif /* HAVE_DOS_BASED_FILE_SYSTEM */
|
||
|
||
#ifdef HAVE_CASE_INSENSITIVE_FILE_SYSTEM
|
||
flags |= FNM_CASEFOLD;
|
||
#endif /* HAVE_CASE_INSENSITIVE_FILE_SYSTEM */
|
||
|
||
return fnmatch (pattern, string, flags);
|
||
}
|
||
|
||
/* Provide a prototype to silence -Wmissing-prototypes. */
|
||
extern initialize_file_ftype _initialize_utils;
|
||
|
||
void
|
||
_initialize_utils (void)
|
||
{
|
||
add_internal_problem_command (&internal_error_problem);
|
||
add_internal_problem_command (&internal_warning_problem);
|
||
add_internal_problem_command (&demangler_warning_problem);
|
||
}
|