mirror of
https://sourceware.org/git/binutils-gdb.git
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0b6cb71e50
* utils.c: #include "gdb_wait.h". (sigalrm_handler, wait_to_die_with_timeout): New functions. * ser-pipe.c: Don't #include "gdb_wait.h". (pipe_close): Give child a chance to die on its own after closing its stdin before SIGTERM'ing it.
3869 lines
96 KiB
C
3869 lines
96 KiB
C
/* General utility routines for GDB, the GNU debugger.
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Copyright (C) 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
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1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
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2009, 2010, 2011 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 "gdb_assert.h"
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#include <ctype.h>
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#include "gdb_string.h"
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#include "gdb_wait.h"
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#include "event-top.h"
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#include "exceptions.h"
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#include "gdbthread.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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/* SunOS's curses.h has a '#define reg register' in it. Thank you Sun. */
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#ifdef reg
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#undef reg
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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 <sys/param.h> /* For MAXPATHLEN */
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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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/* readline defines this. */
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#undef savestring
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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 do_my_cleanups (struct cleanup **, struct cleanup *);
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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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/* A flag indicating whether to timestamp debugging messages. */
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static int debug_timestamp = 0;
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/* Chain of cleanup actions established with make_cleanup,
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to be executed if an error happens. */
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static struct cleanup *cleanup_chain; /* cleaned up after a failed command */
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static struct cleanup *final_cleanup_chain; /* cleaned up when gdb exits */
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/* Nonzero if we have job control. */
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int job_control;
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/* Nonzero means a quit has been requested. */
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int quit_flag;
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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 error messages, if any. */
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char *error_pre_print;
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/* String to be printed before quit messages, if any. */
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char *quit_pre_print;
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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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/* Add a new cleanup to the cleanup_chain,
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and return the previous chain pointer
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to be passed later to do_cleanups or discard_cleanups.
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Args are FUNCTION to clean up with, and ARG to pass to it. */
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struct cleanup *
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make_cleanup (make_cleanup_ftype *function, void *arg)
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{
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return make_my_cleanup (&cleanup_chain, function, arg);
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}
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struct cleanup *
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make_cleanup_dtor (make_cleanup_ftype *function, void *arg,
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void (*dtor) (void *))
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{
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return make_my_cleanup2 (&cleanup_chain,
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function, arg, dtor);
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}
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struct cleanup *
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make_final_cleanup (make_cleanup_ftype *function, void *arg)
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{
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return make_my_cleanup (&final_cleanup_chain, function, arg);
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}
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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_my_cleanup (&cleanup_chain, 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_my_cleanup (&cleanup_chain, 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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bfd_close (arg);
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}
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struct cleanup *
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make_cleanup_bfd_close (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_my_cleanup (&cleanup_chain, 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_my_cleanup (&cleanup_chain, 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_my_cleanup (&cleanup_chain, 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_my_cleanup2 (&cleanup_chain, restore_integer, (void *)c,
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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_my_cleanup (&cleanup_chain, 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_my_cleanup (&cleanup_chain, 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_my_cleanup (&cleanup_chain, 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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{
|
||
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. */
|
||
|
||
struct cleanup *
|
||
make_cleanup_free_so (struct so_list *so)
|
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{
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||
return make_my_cleanup (&cleanup_chain, do_free_so, so);
|
||
}
|
||
|
||
struct cleanup *
|
||
make_my_cleanup2 (struct cleanup **pmy_chain, make_cleanup_ftype *function,
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void *arg, void (*free_arg) (void *))
|
||
{
|
||
struct cleanup *new
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||
= (struct cleanup *) xmalloc (sizeof (struct cleanup));
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||
struct cleanup *old_chain = *pmy_chain;
|
||
|
||
new->next = *pmy_chain;
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||
new->function = function;
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new->free_arg = free_arg;
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||
new->arg = arg;
|
||
*pmy_chain = new;
|
||
|
||
return old_chain;
|
||
}
|
||
|
||
struct cleanup *
|
||
make_my_cleanup (struct cleanup **pmy_chain, make_cleanup_ftype *function,
|
||
void *arg)
|
||
{
|
||
return make_my_cleanup2 (pmy_chain, function, arg, NULL);
|
||
}
|
||
|
||
/* Discard cleanups and do the actions they describe
|
||
until we get back to the point OLD_CHAIN in the cleanup_chain. */
|
||
|
||
void
|
||
do_cleanups (struct cleanup *old_chain)
|
||
{
|
||
do_my_cleanups (&cleanup_chain, old_chain);
|
||
}
|
||
|
||
void
|
||
do_final_cleanups (struct cleanup *old_chain)
|
||
{
|
||
do_my_cleanups (&final_cleanup_chain, old_chain);
|
||
}
|
||
|
||
static void
|
||
do_my_cleanups (struct cleanup **pmy_chain,
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||
struct cleanup *old_chain)
|
||
{
|
||
struct cleanup *ptr;
|
||
|
||
while ((ptr = *pmy_chain) != old_chain)
|
||
{
|
||
*pmy_chain = ptr->next; /* Do this first in case of recursion. */
|
||
(*ptr->function) (ptr->arg);
|
||
if (ptr->free_arg)
|
||
(*ptr->free_arg) (ptr->arg);
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||
xfree (ptr);
|
||
}
|
||
}
|
||
|
||
/* Discard cleanups, not doing the actions they describe,
|
||
until we get back to the point OLD_CHAIN in the cleanup_chain. */
|
||
|
||
void
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||
discard_cleanups (struct cleanup *old_chain)
|
||
{
|
||
discard_my_cleanups (&cleanup_chain, old_chain);
|
||
}
|
||
|
||
void
|
||
discard_final_cleanups (struct cleanup *old_chain)
|
||
{
|
||
discard_my_cleanups (&final_cleanup_chain, old_chain);
|
||
}
|
||
|
||
void
|
||
discard_my_cleanups (struct cleanup **pmy_chain,
|
||
struct cleanup *old_chain)
|
||
{
|
||
struct cleanup *ptr;
|
||
|
||
while ((ptr = *pmy_chain) != old_chain)
|
||
{
|
||
*pmy_chain = ptr->next;
|
||
if (ptr->free_arg)
|
||
(*ptr->free_arg) (ptr->arg);
|
||
xfree (ptr);
|
||
}
|
||
}
|
||
|
||
/* Set the cleanup_chain to 0, and return the old cleanup chain. */
|
||
struct cleanup *
|
||
save_cleanups (void)
|
||
{
|
||
return save_my_cleanups (&cleanup_chain);
|
||
}
|
||
|
||
struct cleanup *
|
||
save_final_cleanups (void)
|
||
{
|
||
return save_my_cleanups (&final_cleanup_chain);
|
||
}
|
||
|
||
struct cleanup *
|
||
save_my_cleanups (struct cleanup **pmy_chain)
|
||
{
|
||
struct cleanup *old_chain = *pmy_chain;
|
||
|
||
*pmy_chain = 0;
|
||
return old_chain;
|
||
}
|
||
|
||
/* Restore the cleanup chain from a previously saved chain. */
|
||
void
|
||
restore_cleanups (struct cleanup *chain)
|
||
{
|
||
restore_my_cleanups (&cleanup_chain, chain);
|
||
}
|
||
|
||
void
|
||
restore_final_cleanups (struct cleanup *chain)
|
||
{
|
||
restore_my_cleanups (&final_cleanup_chain, chain);
|
||
}
|
||
|
||
void
|
||
restore_my_cleanups (struct cleanup **pmy_chain, struct cleanup *chain)
|
||
{
|
||
*pmy_chain = chain;
|
||
}
|
||
|
||
/* This function is useful for cleanups.
|
||
Do
|
||
|
||
foo = xmalloc (...);
|
||
old_chain = make_cleanup (free_current_contents, &foo);
|
||
|
||
to arrange to free the object thus allocated. */
|
||
|
||
void
|
||
free_current_contents (void *ptr)
|
||
{
|
||
void **location = ptr;
|
||
|
||
if (location == NULL)
|
||
internal_error (__FILE__, __LINE__,
|
||
_("free_current_contents: NULL pointer"));
|
||
if (*location != NULL)
|
||
{
|
||
xfree (*location);
|
||
*location = NULL;
|
||
}
|
||
}
|
||
|
||
/* Provide a known function that does nothing, to use as a base for
|
||
a possibly long chain of cleanups. This is useful where we
|
||
use the cleanup chain for handling normal cleanups as well as dealing
|
||
with cleanups that need to be done as a result of a call to error().
|
||
In such cases, we may not be certain where the first cleanup is, unless
|
||
we have a do-nothing one to always use as the base. */
|
||
|
||
void
|
||
null_cleanup (void *arg)
|
||
{
|
||
}
|
||
|
||
/* If nonzero, display time usage both at startup and for each command. */
|
||
|
||
static int display_time;
|
||
|
||
/* If nonzero, display space usage both at startup and for each command. */
|
||
|
||
static int display_space;
|
||
|
||
/* Records a run time and space usage to be used as a base for
|
||
reporting elapsed time or change in space. In addition,
|
||
the msg_type field indicates whether the saved time is from the
|
||
beginning of GDB execution (0) or the beginning of an individual
|
||
command execution (1). */
|
||
struct cmd_stats
|
||
{
|
||
int msg_type;
|
||
long start_cpu_time;
|
||
struct timeval start_wall_time;
|
||
long start_space;
|
||
};
|
||
|
||
/* Set whether to display time statistics to NEW_VALUE (non-zero
|
||
means true). */
|
||
void
|
||
set_display_time (int new_value)
|
||
{
|
||
display_time = new_value;
|
||
}
|
||
|
||
/* Set whether to display space statistics to NEW_VALUE (non-zero
|
||
means true). */
|
||
void
|
||
set_display_space (int new_value)
|
||
{
|
||
display_space = new_value;
|
||
}
|
||
|
||
/* As indicated by display_time and display_space, report GDB's elapsed time
|
||
and space usage from the base time and space provided in ARG, which
|
||
must be a pointer to a struct cmd_stat. This function is intended
|
||
to be called as a cleanup. */
|
||
static void
|
||
report_command_stats (void *arg)
|
||
{
|
||
struct cmd_stats *start_stats = (struct cmd_stats *) arg;
|
||
int msg_type = start_stats->msg_type;
|
||
|
||
if (display_time)
|
||
{
|
||
long cmd_time = get_run_time () - start_stats->start_cpu_time;
|
||
struct timeval now_wall_time, delta_wall_time;
|
||
|
||
gettimeofday (&now_wall_time, NULL);
|
||
timeval_sub (&delta_wall_time,
|
||
&now_wall_time, &start_stats->start_wall_time);
|
||
|
||
printf_unfiltered (msg_type == 0
|
||
? _("Startup time: %ld.%06ld (cpu), %ld.%06ld (wall)\n")
|
||
: _("Command execution time: %ld.%06ld (cpu), %ld.%06ld (wall)\n"),
|
||
cmd_time / 1000000, cmd_time % 1000000,
|
||
(long) delta_wall_time.tv_sec,
|
||
(long) delta_wall_time.tv_usec);
|
||
}
|
||
|
||
if (display_space)
|
||
{
|
||
#ifdef HAVE_SBRK
|
||
char *lim = (char *) sbrk (0);
|
||
|
||
long space_now = lim - lim_at_start;
|
||
long space_diff = space_now - start_stats->start_space;
|
||
|
||
printf_unfiltered (msg_type == 0
|
||
? _("Space used: %ld (%s%ld during startup)\n")
|
||
: _("Space used: %ld (%s%ld for this command)\n"),
|
||
space_now,
|
||
(space_diff >= 0 ? "+" : ""),
|
||
space_diff);
|
||
#endif
|
||
}
|
||
}
|
||
|
||
/* Create a cleanup that reports time and space used since its
|
||
creation. Precise messages depend on MSG_TYPE:
|
||
0: Initial time/space
|
||
1: Individual command time/space. */
|
||
struct cleanup *
|
||
make_command_stats_cleanup (int msg_type)
|
||
{
|
||
struct cmd_stats *new_stat = XMALLOC (struct cmd_stats);
|
||
|
||
#ifdef HAVE_SBRK
|
||
char *lim = (char *) sbrk (0);
|
||
new_stat->start_space = lim - lim_at_start;
|
||
#endif
|
||
|
||
new_stat->msg_type = msg_type;
|
||
new_stat->start_cpu_time = get_run_time ();
|
||
gettimeofday (&new_stat->start_wall_time, NULL);
|
||
|
||
return make_cleanup_dtor (report_command_stats, new_stat, xfree);
|
||
}
|
||
|
||
|
||
|
||
/* 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
|
||
{
|
||
target_terminal_ours ();
|
||
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");
|
||
va_end (args);
|
||
}
|
||
}
|
||
|
||
/* Print a warning message.
|
||
The first argument STRING is the warning message, used as a fprintf string,
|
||
and the remaining args are passed as arguments to it.
|
||
The primary difference between warnings and errors is that a warning
|
||
does not force the return to command level. */
|
||
|
||
void
|
||
warning (const char *string, ...)
|
||
{
|
||
va_list args;
|
||
|
||
va_start (args, string);
|
||
vwarning (string, args);
|
||
va_end (args);
|
||
}
|
||
|
||
/* 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 (const char *string, ...)
|
||
{
|
||
va_list args;
|
||
|
||
va_start (args, string);
|
||
throw_verror (GENERIC_ERROR, string, args);
|
||
va_end (args);
|
||
}
|
||
|
||
/* Print an error message and quit.
|
||
The first argument STRING is the error message, used as a fprintf string,
|
||
and the remaining args are passed as arguments to it. */
|
||
|
||
void
|
||
vfatal (const char *string, va_list args)
|
||
{
|
||
throw_vfatal (string, args);
|
||
}
|
||
|
||
void
|
||
fatal (const char *string, ...)
|
||
{
|
||
va_list args;
|
||
|
||
va_start (args, string);
|
||
throw_vfatal (string, args);
|
||
va_end (args);
|
||
}
|
||
|
||
void
|
||
error_stream (struct ui_file *stream)
|
||
{
|
||
char *message = ui_file_xstrdup (stream, NULL);
|
||
|
||
make_cleanup (xfree, message);
|
||
error (("%s"), message);
|
||
}
|
||
|
||
/* Dump core trying to increase the core soft limit to hard limit first. */
|
||
|
||
static 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. */
|
||
|
||
static int
|
||
can_dump_core (const char *reason)
|
||
{
|
||
#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;
|
||
|
||
if (rlim.rlim_max == 0)
|
||
{
|
||
fprintf_unfiltered (gdb_stderr,
|
||
_("%s\nUnable to dump core, use `ulimit -c"
|
||
" unlimited' before executing GDB next time.\n"),
|
||
reason);
|
||
return 0;
|
||
}
|
||
#endif /* HAVE_GETRLIMIT */
|
||
|
||
return 1;
|
||
}
|
||
|
||
/* 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 *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;
|
||
const char *should_quit;
|
||
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;
|
||
|
||
/* 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;
|
||
fputs_unfiltered (msg, gdb_stderr);
|
||
abort (); /* NOTE: GDB has only three calls to abort(). */
|
||
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);
|
||
}
|
||
}
|
||
|
||
/* Try to get the message out and at the start of a new line. */
|
||
target_terminal_ours ();
|
||
begin_line ();
|
||
|
||
/* 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);
|
||
}
|
||
|
||
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 (caution == 0)
|
||
{
|
||
/* Emit the message and quit. */
|
||
fputs_unfiltered (reason, gdb_stderr);
|
||
fputs_unfiltered ("\n", gdb_stderr);
|
||
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"));
|
||
|
||
if (problem->should_dump_core == internal_problem_ask)
|
||
{
|
||
if (!can_dump_core (reason))
|
||
dump_core_p = 0;
|
||
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 (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;
|
||
}
|
||
|
||
static struct internal_problem internal_error_problem = {
|
||
"internal-error", internal_problem_ask, 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);
|
||
deprecated_throw_reason (RETURN_ERROR);
|
||
}
|
||
|
||
void
|
||
internal_error (const char *file, int line, const char *string, ...)
|
||
{
|
||
va_list ap;
|
||
|
||
va_start (ap, string);
|
||
internal_verror (file, line, string, ap);
|
||
va_end (ap);
|
||
}
|
||
|
||
static struct internal_problem internal_warning_problem = {
|
||
"internal-warning", internal_problem_ask, 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);
|
||
}
|
||
|
||
void
|
||
internal_warning (const char *file, int line, const char *string, ...)
|
||
{
|
||
va_list ap;
|
||
|
||
va_start (ap, string);
|
||
internal_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);
|
||
|
||
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);
|
||
|
||
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);
|
||
}
|
||
|
||
/* Print the system error message for errno, and also mention STRING
|
||
as the file name for which the error was encountered.
|
||
Then return to command level. */
|
||
|
||
void
|
||
perror_with_name (const char *string)
|
||
{
|
||
char *err;
|
||
char *combined;
|
||
|
||
err = safe_strerror (errno);
|
||
combined = (char *) alloca (strlen (err) + strlen (string) + 3);
|
||
strcpy (combined, string);
|
||
strcat (combined, ": ");
|
||
strcat (combined, err);
|
||
|
||
/* 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;
|
||
|
||
error (_("%s."), 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)
|
||
{
|
||
#ifdef __MSDOS__
|
||
/* No steenking SIGINT will ever be coming our way when the
|
||
program is resumed. Don't lie. */
|
||
fatal ("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. */
|
||
|| current_target.to_terminal_ours == NULL)
|
||
fatal ("Quit");
|
||
else
|
||
fatal ("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;
|
||
}
|
||
|
||
/* Make a copy of the string at PTR with SIZE characters
|
||
(and add a null character at the end in the copy).
|
||
Uses malloc to get the space. Returns the address of the copy. */
|
||
|
||
char *
|
||
savestring (const char *ptr, size_t size)
|
||
{
|
||
char *p = (char *) xmalloc (size + 1);
|
||
|
||
memcpy (p, ptr, size);
|
||
p[size] = 0;
|
||
return p;
|
||
}
|
||
|
||
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));
|
||
}
|
||
|
||
|
||
/* 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;
|
||
}
|
||
|
||
|
||
|
||
/* 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 answer;
|
||
int ans2;
|
||
int retval;
|
||
int def_value;
|
||
char def_answer, not_def_answer;
|
||
char *y_string, *n_string, *question;
|
||
|
||
/* 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 (! caution || 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);
|
||
|
||
while (1)
|
||
{
|
||
wrap_here (""); /* Flush any buffered output. */
|
||
gdb_flush (gdb_stdout);
|
||
|
||
if (annotation_level > 1)
|
||
printf_filtered (("\n\032\032pre-query\n"));
|
||
|
||
fputs_filtered (question, gdb_stdout);
|
||
printf_filtered (_("(%s or %s) "), y_string, n_string);
|
||
|
||
if (annotation_level > 1)
|
||
printf_filtered (("\n\032\032query\n"));
|
||
|
||
wrap_here ("");
|
||
gdb_flush (gdb_stdout);
|
||
|
||
answer = fgetc (stdin);
|
||
|
||
/* We expect fgetc to block until a character is read. But
|
||
this may not be the case if the terminal was opened with
|
||
the NONBLOCK flag. In that case, if there is nothing to
|
||
read on stdin, fgetc returns EOF, but also sets the error
|
||
condition flag on stdin and errno to EAGAIN. With a true
|
||
EOF, stdin's error condition flag is not set.
|
||
|
||
A situation where this behavior was observed is a pseudo
|
||
terminal on AIX. */
|
||
while (answer == EOF && ferror (stdin) && errno == EAGAIN)
|
||
{
|
||
/* Not a real EOF. Wait a little while and try again until
|
||
we read something. */
|
||
clearerr (stdin);
|
||
gdb_usleep (10000);
|
||
answer = fgetc (stdin);
|
||
}
|
||
|
||
clearerr (stdin); /* in case of C-d */
|
||
if (answer == EOF) /* C-d */
|
||
{
|
||
printf_filtered ("EOF [assumed %c]\n", def_answer);
|
||
retval = def_value;
|
||
break;
|
||
}
|
||
/* Eat rest of input line, to EOF or newline. */
|
||
if (answer != '\n')
|
||
do
|
||
{
|
||
ans2 = fgetc (stdin);
|
||
clearerr (stdin);
|
||
}
|
||
while (ans2 != EOF && ans2 != '\n' && ans2 != '\r');
|
||
|
||
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 == '\n' || answer == '\r' || answer == EOF)))
|
||
{
|
||
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);
|
||
}
|
||
|
||
xfree (question);
|
||
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 (),
|
||
&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, 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. */
|
||
|
||
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 (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. */
|
||
if (tgetnum ("li") < 0 || getenv ("EMACS"))
|
||
{
|
||
/* The number of lines per page is not mentioned in the
|
||
terminal description. This probably means that paging is
|
||
not useful (e.g. emacs shell window), so disable paging. */
|
||
lines_per_page = UINT_MAX;
|
||
}
|
||
|
||
/* FIXME: Get rid of this junk. */
|
||
#if defined(SIGWINCH) && defined(SIGWINCH_HANDLER)
|
||
SIGWINCH_HANDLER (SIGWINCH);
|
||
#endif
|
||
|
||
/* 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 ();
|
||
}
|
||
|
||
/* 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];
|
||
|
||
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++;
|
||
/* 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);
|
||
|
||
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')
|
||
async_request_quit (0);
|
||
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. */
|
||
}
|
||
|
||
/* 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, 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 =
|
||
(strncmp
|
||
(template_string, string_to_compare, strlen (string_to_compare)) == 0);
|
||
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 gdb thinks are in a line."), _("\
|
||
Show number of characters gdb thinks are in a line."), NULL,
|
||
set_width_command,
|
||
show_chars_per_line,
|
||
&setlist, &showlist);
|
||
|
||
add_setshow_uinteger_cmd ("height", class_support, &lines_per_page, _("\
|
||
Set number of lines gdb thinks are in a page."), _("\
|
||
Show number of lines gdb thinks are in a page."), NULL,
|
||
set_height_command,
|
||
show_lines_per_page,
|
||
&setlist, &showlist);
|
||
|
||
init_page_info ();
|
||
|
||
add_setshow_boolean_cmd ("pagination", class_support,
|
||
&pagination_enabled, _("\
|
||
Set state of pagination."), _("\
|
||
Show state of pagination."), NULL,
|
||
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);
|
||
}
|
||
|
||
/* Machine specific function to handle SIGWINCH signal. */
|
||
|
||
#ifdef SIGWINCH_HANDLER_BODY
|
||
SIGWINCH_HANDLER_BODY
|
||
#endif
|
||
/* Print routines to handle variable size regs, etc. */
|
||
/* Temporary storage using circular buffer. */
|
||
#define NUMCELLS 16
|
||
#define CELLSIZE 50
|
||
static char *
|
||
get_cell (void)
|
||
{
|
||
static char buf[NUMCELLS][CELLSIZE];
|
||
static int cell = 0;
|
||
|
||
if (++cell >= NUMCELLS)
|
||
cell = 0;
|
||
return buf[cell];
|
||
}
|
||
|
||
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;
|
||
}
|
||
|
||
static char *
|
||
decimal2str (char *sign, ULONGEST addr, int width)
|
||
{
|
||
/* Steal code from valprint.c:print_decimal(). Should this worry
|
||
about the real size of addr as the above does? */
|
||
unsigned long temp[3];
|
||
char *str = get_cell ();
|
||
int i = 0;
|
||
|
||
do
|
||
{
|
||
temp[i] = addr % (1000 * 1000 * 1000);
|
||
addr /= (1000 * 1000 * 1000);
|
||
i++;
|
||
width -= 9;
|
||
}
|
||
while (addr != 0 && i < (sizeof (temp) / sizeof (temp[0])));
|
||
|
||
width += 9;
|
||
if (width < 0)
|
||
width = 0;
|
||
|
||
switch (i)
|
||
{
|
||
case 1:
|
||
xsnprintf (str, CELLSIZE, "%s%0*lu", sign, width, temp[0]);
|
||
break;
|
||
case 2:
|
||
xsnprintf (str, CELLSIZE, "%s%0*lu%09lu", sign, width,
|
||
temp[1], temp[0]);
|
||
break;
|
||
case 3:
|
||
xsnprintf (str, CELLSIZE, "%s%0*lu%09lu%09lu", sign, width,
|
||
temp[2], temp[1], temp[0]);
|
||
break;
|
||
default:
|
||
internal_error (__FILE__, __LINE__,
|
||
_("failed internal consistency check"));
|
||
}
|
||
|
||
return str;
|
||
}
|
||
|
||
static char *
|
||
octal2str (ULONGEST addr, int width)
|
||
{
|
||
unsigned long temp[3];
|
||
char *str = get_cell ();
|
||
int i = 0;
|
||
|
||
do
|
||
{
|
||
temp[i] = addr % (0100000 * 0100000);
|
||
addr /= (0100000 * 0100000);
|
||
i++;
|
||
width -= 10;
|
||
}
|
||
while (addr != 0 && i < (sizeof (temp) / sizeof (temp[0])));
|
||
|
||
width += 10;
|
||
if (width < 0)
|
||
width = 0;
|
||
|
||
switch (i)
|
||
{
|
||
case 1:
|
||
if (temp[0] == 0)
|
||
xsnprintf (str, CELLSIZE, "%*o", width, 0);
|
||
else
|
||
xsnprintf (str, CELLSIZE, "0%0*lo", width, temp[0]);
|
||
break;
|
||
case 2:
|
||
xsnprintf (str, CELLSIZE, "0%0*lo%010lo", width, temp[1], temp[0]);
|
||
break;
|
||
case 3:
|
||
xsnprintf (str, CELLSIZE, "0%0*lo%010lo%010lo", width,
|
||
temp[2], temp[1], temp[0]);
|
||
break;
|
||
default:
|
||
internal_error (__FILE__, __LINE__,
|
||
_("failed internal consistency check"));
|
||
}
|
||
|
||
return str;
|
||
}
|
||
|
||
char *
|
||
pulongest (ULONGEST u)
|
||
{
|
||
return decimal2str ("", u, 0);
|
||
}
|
||
|
||
char *
|
||
plongest (LONGEST l)
|
||
{
|
||
if (l < 0)
|
||
return decimal2str ("-", -l, 0);
|
||
else
|
||
return decimal2str ("", l, 0);
|
||
}
|
||
|
||
/* Eliminate warning from compiler on 32-bit systems. */
|
||
static int thirty_two = 32;
|
||
|
||
char *
|
||
phex (ULONGEST l, int sizeof_l)
|
||
{
|
||
char *str;
|
||
|
||
switch (sizeof_l)
|
||
{
|
||
case 8:
|
||
str = get_cell ();
|
||
xsnprintf (str, CELLSIZE, "%08lx%08lx",
|
||
(unsigned long) (l >> thirty_two),
|
||
(unsigned long) (l & 0xffffffff));
|
||
break;
|
||
case 4:
|
||
str = get_cell ();
|
||
xsnprintf (str, CELLSIZE, "%08lx", (unsigned long) l);
|
||
break;
|
||
case 2:
|
||
str = get_cell ();
|
||
xsnprintf (str, CELLSIZE, "%04x", (unsigned short) (l & 0xffff));
|
||
break;
|
||
default:
|
||
str = phex (l, sizeof (l));
|
||
break;
|
||
}
|
||
|
||
return str;
|
||
}
|
||
|
||
char *
|
||
phex_nz (ULONGEST l, int sizeof_l)
|
||
{
|
||
char *str;
|
||
|
||
switch (sizeof_l)
|
||
{
|
||
case 8:
|
||
{
|
||
unsigned long high = (unsigned long) (l >> thirty_two);
|
||
|
||
str = get_cell ();
|
||
if (high == 0)
|
||
xsnprintf (str, CELLSIZE, "%lx",
|
||
(unsigned long) (l & 0xffffffff));
|
||
else
|
||
xsnprintf (str, CELLSIZE, "%lx%08lx", high,
|
||
(unsigned long) (l & 0xffffffff));
|
||
break;
|
||
}
|
||
case 4:
|
||
str = get_cell ();
|
||
xsnprintf (str, CELLSIZE, "%lx", (unsigned long) l);
|
||
break;
|
||
case 2:
|
||
str = get_cell ();
|
||
xsnprintf (str, CELLSIZE, "%x", (unsigned short) (l & 0xffff));
|
||
break;
|
||
default:
|
||
str = phex_nz (l, sizeof (l));
|
||
break;
|
||
}
|
||
|
||
return str;
|
||
}
|
||
|
||
/* Converts a LONGEST to a C-format hexadecimal literal and stores it
|
||
in a static string. Returns a pointer to this string. */
|
||
char *
|
||
hex_string (LONGEST num)
|
||
{
|
||
char *result = get_cell ();
|
||
|
||
xsnprintf (result, CELLSIZE, "0x%s", phex_nz (num, sizeof (num)));
|
||
return result;
|
||
}
|
||
|
||
/* Converts a LONGEST number to a C-format hexadecimal literal and
|
||
stores it in a static string. Returns a pointer to this string
|
||
that is valid until the next call. The number is padded on the
|
||
left with 0s to at least WIDTH characters. */
|
||
char *
|
||
hex_string_custom (LONGEST num, int width)
|
||
{
|
||
char *result = get_cell ();
|
||
char *result_end = result + CELLSIZE - 1;
|
||
const char *hex = phex_nz (num, sizeof (num));
|
||
int hex_len = strlen (hex);
|
||
|
||
if (hex_len > width)
|
||
width = hex_len;
|
||
if (width + 2 >= CELLSIZE)
|
||
internal_error (__FILE__, __LINE__, _("\
|
||
hex_string_custom: insufficient space to store result"));
|
||
|
||
strcpy (result_end - width - 2, "0x");
|
||
memset (result_end - width, '0', width);
|
||
strcpy (result_end - hex_len, hex);
|
||
return result_end - width - 2;
|
||
}
|
||
|
||
/* Convert VAL to a numeral in the given radix. For
|
||
* radix 10, IS_SIGNED may be true, indicating a signed quantity;
|
||
* otherwise VAL is interpreted as unsigned. If WIDTH is supplied,
|
||
* it is the minimum width (0-padded if needed). USE_C_FORMAT means
|
||
* to use C format in all cases. If it is false, then 'x'
|
||
* and 'o' formats do not include a prefix (0x or leading 0). */
|
||
|
||
char *
|
||
int_string (LONGEST val, int radix, int is_signed, int width,
|
||
int use_c_format)
|
||
{
|
||
switch (radix)
|
||
{
|
||
case 16:
|
||
{
|
||
char *result;
|
||
|
||
if (width == 0)
|
||
result = hex_string (val);
|
||
else
|
||
result = hex_string_custom (val, width);
|
||
if (! use_c_format)
|
||
result += 2;
|
||
return result;
|
||
}
|
||
case 10:
|
||
{
|
||
if (is_signed && val < 0)
|
||
return decimal2str ("-", -val, width);
|
||
else
|
||
return decimal2str ("", val, width);
|
||
}
|
||
case 8:
|
||
{
|
||
char *result = octal2str (val, width);
|
||
|
||
if (use_c_format || val == 0)
|
||
return result;
|
||
else
|
||
return result + 1;
|
||
}
|
||
default:
|
||
internal_error (__FILE__, __LINE__,
|
||
_("failed internal consistency check"));
|
||
}
|
||
}
|
||
|
||
/* Convert a CORE_ADDR into a string. */
|
||
const char *
|
||
core_addr_to_string (const CORE_ADDR addr)
|
||
{
|
||
char *str = get_cell ();
|
||
|
||
strcpy (str, "0x");
|
||
strcat (str, phex (addr, sizeof (addr)));
|
||
return str;
|
||
}
|
||
|
||
const char *
|
||
core_addr_to_string_nz (const CORE_ADDR addr)
|
||
{
|
||
char *str = get_cell ();
|
||
|
||
strcpy (str, "0x");
|
||
strcat (str, phex_nz (addr, sizeof (addr)));
|
||
return str;
|
||
}
|
||
|
||
/* 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;
|
||
}
|
||
|
||
const char *
|
||
host_address_to_string (const void *addr)
|
||
{
|
||
char *str = get_cell ();
|
||
|
||
xsnprintf (str, CELLSIZE, "0x%s", phex_nz ((uintptr_t) addr, sizeof (addr)));
|
||
return str;
|
||
}
|
||
|
||
char *
|
||
gdb_realpath (const char *filename)
|
||
{
|
||
/* Method 1: The system has a compile time upper bound on a filename
|
||
path. Use that and realpath() to canonicalize the name. This is
|
||
the most common case. Note that, if there isn't a compile time
|
||
upper bound, you want to avoid realpath() at all costs. */
|
||
#if defined(HAVE_REALPATH)
|
||
{
|
||
# if defined (PATH_MAX)
|
||
char buf[PATH_MAX];
|
||
# define USE_REALPATH
|
||
# elif defined (MAXPATHLEN)
|
||
char buf[MAXPATHLEN];
|
||
# define USE_REALPATH
|
||
# endif
|
||
# if defined (USE_REALPATH)
|
||
const char *rp = realpath (filename, buf);
|
||
|
||
if (rp == NULL)
|
||
rp = filename;
|
||
return xstrdup (rp);
|
||
# endif
|
||
}
|
||
#endif /* HAVE_REALPATH */
|
||
|
||
/* Method 2: The host system (i.e., GNU) has the function
|
||
canonicalize_file_name() which malloc's a chunk of memory and
|
||
returns that, use that. */
|
||
#if defined(HAVE_CANONICALIZE_FILE_NAME)
|
||
{
|
||
char *rp = canonicalize_file_name (filename);
|
||
|
||
if (rp == NULL)
|
||
return xstrdup (filename);
|
||
else
|
||
return rp;
|
||
}
|
||
#endif
|
||
|
||
/* FIXME: cagney/2002-11-13:
|
||
|
||
Method 2a: Use realpath() with a NULL buffer. Some systems, due
|
||
to the problems described in method 3, have modified their
|
||
realpath() implementation so that it will allocate a buffer when
|
||
NULL is passed in. Before this can be used, though, some sort of
|
||
configure time test would need to be added. Otherwize the code
|
||
will likely core dump. */
|
||
|
||
/* Method 3: Now we're getting desperate! The system doesn't have a
|
||
compile time buffer size and no alternative function. Query the
|
||
OS, using pathconf(), for the buffer limit. Care is needed
|
||
though, some systems do not limit PATH_MAX (return -1 for
|
||
pathconf()) making it impossible to pass a correctly sized buffer
|
||
to realpath() (it could always overflow). On those systems, we
|
||
skip this. */
|
||
#if defined (HAVE_REALPATH) && defined (HAVE_UNISTD_H) && defined(HAVE_ALLOCA)
|
||
{
|
||
/* Find out the max path size. */
|
||
long path_max = pathconf ("/", _PC_PATH_MAX);
|
||
|
||
if (path_max > 0)
|
||
{
|
||
/* PATH_MAX is bounded. */
|
||
char *buf = alloca (path_max);
|
||
char *rp = realpath (filename, buf);
|
||
|
||
return xstrdup (rp ? rp : filename);
|
||
}
|
||
}
|
||
#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 *
|
||
xfullpath (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;
|
||
}
|
||
|
||
|
||
/* This is the 32-bit CRC function used by the GNU separate debug
|
||
facility. An executable may contain a section named
|
||
.gnu_debuglink, which holds the name of a separate executable file
|
||
containing its debug info, and a checksum of that file's contents,
|
||
computed using this function. */
|
||
unsigned long
|
||
gnu_debuglink_crc32 (unsigned long crc, unsigned char *buf, size_t len)
|
||
{
|
||
static const unsigned int crc32_table[256] = {
|
||
0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419,
|
||
0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4,
|
||
0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07,
|
||
0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,
|
||
0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856,
|
||
0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
|
||
0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4,
|
||
0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
|
||
0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3,
|
||
0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a,
|
||
0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599,
|
||
0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
|
||
0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190,
|
||
0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f,
|
||
0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e,
|
||
0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
|
||
0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed,
|
||
0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
|
||
0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3,
|
||
0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2,
|
||
0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a,
|
||
0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5,
|
||
0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010,
|
||
0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
|
||
0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17,
|
||
0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6,
|
||
0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615,
|
||
0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,
|
||
0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344,
|
||
0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
|
||
0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a,
|
||
0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
|
||
0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1,
|
||
0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c,
|
||
0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef,
|
||
0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
|
||
0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe,
|
||
0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31,
|
||
0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c,
|
||
0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
|
||
0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b,
|
||
0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
|
||
0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1,
|
||
0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,
|
||
0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278,
|
||
0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7,
|
||
0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66,
|
||
0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
|
||
0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605,
|
||
0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8,
|
||
0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b,
|
||
0x2d02ef8d
|
||
};
|
||
unsigned char *end;
|
||
|
||
crc = ~crc & 0xffffffff;
|
||
for (end = buf + len; buf < end; ++buf)
|
||
crc = crc32_table[(crc ^ *buf) & 0xff] ^ (crc >> 8);
|
||
return ~crc & 0xffffffff;
|
||
}
|
||
|
||
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)
|
||
{
|
||
unsigned int 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 (char *args)
|
||
{
|
||
unsigned long pid;
|
||
char *dummy;
|
||
|
||
if (!args)
|
||
error_no_arg (_("process-id to attach"));
|
||
|
||
dummy = 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)
|
||
{
|
||
const char *cs;
|
||
int major, minor;
|
||
|
||
if (producer == NULL)
|
||
{
|
||
/* For unknown compilers expect their behavior is not compliant. For GCC
|
||
this case can also happen for -gdwarf-4 type units supported since
|
||
gcc-4.5. */
|
||
|
||
return -1;
|
||
}
|
||
|
||
/* Skip any identifier after "GNU " - such as "C++" or "Java". */
|
||
|
||
if (strncmp (producer, "GNU ", strlen ("GNU ")) != 0)
|
||
{
|
||
/* For non-GCC compilers expect their behavior is not compliant. */
|
||
|
||
return -1;
|
||
}
|
||
cs = &producer[strlen ("GNU ")];
|
||
while (*cs && !isdigit (*cs))
|
||
cs++;
|
||
if (sscanf (cs, "%d.%d", &major, &minor) != 2)
|
||
{
|
||
/* Not recognized as GCC. */
|
||
|
||
return -1;
|
||
}
|
||
|
||
if (major < 4)
|
||
return -1;
|
||
if (major > 4)
|
||
return INT_MAX;
|
||
return minor;
|
||
}
|
||
|
||
#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 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);
|
||
}
|