1272 lines
38 KiB
C
1272 lines
38 KiB
C
/* Top level stuff for GDB, the GNU debugger.
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Copyright (C) 1986-2014 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 "top.h"
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#include "target.h"
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#include "inferior.h"
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#include "symfile.h"
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#include "gdbcore.h"
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#include "getopt.h"
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <ctype.h>
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#include "event-loop.h"
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#include "ui-out.h"
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#include "interps.h"
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#include "main.h"
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#include "source.h"
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#include "cli/cli-cmds.h"
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#include "objfiles.h"
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#include "auto-load.h"
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#include "maint.h"
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#include "filenames.h"
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#include "filestuff.h"
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#include <signal.h>
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#include "event-top.h"
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#include "infrun.h"
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/* The selected interpreter. This will be used as a set command
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variable, so it should always be malloc'ed - since
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do_setshow_command will free it. */
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char *interpreter_p;
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/* Whether xdb commands will be handled. */
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int xdb_commands = 0;
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/* Whether dbx commands will be handled. */
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int dbx_commands = 0;
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/* System root path, used to find libraries etc. */
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char *gdb_sysroot = 0;
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/* GDB datadir, used to store data files. */
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char *gdb_datadir = 0;
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/* Non-zero if GDB_DATADIR was provided on the command line.
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This doesn't track whether data-directory is set later from the
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command line, but we don't reread system.gdbinit when that happens. */
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static int gdb_datadir_provided = 0;
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/* If gdb was configured with --with-python=/path,
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the possibly relocated path to python's lib directory. */
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char *python_libdir = 0;
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struct ui_file *gdb_stdout;
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struct ui_file *gdb_stderr;
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struct ui_file *gdb_stdlog;
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struct ui_file *gdb_stdin;
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/* Target IO streams. */
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struct ui_file *gdb_stdtargin;
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struct ui_file *gdb_stdtarg;
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struct ui_file *gdb_stdtargerr;
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/* True if --batch or --batch-silent was seen. */
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int batch_flag = 0;
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/* Support for the --batch-silent option. */
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int batch_silent = 0;
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/* Support for --return-child-result option.
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Set the default to -1 to return error in the case
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that the program does not run or does not complete. */
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int return_child_result = 0;
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int return_child_result_value = -1;
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/* GDB as it has been invoked from the command line (i.e. argv[0]). */
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static char *gdb_program_name;
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/* Return read only pointer to GDB_PROGRAM_NAME. */
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const char *
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get_gdb_program_name (void)
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{
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return gdb_program_name;
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}
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static void print_gdb_help (struct ui_file *);
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/* Set the data-directory parameter to NEW_DATADIR.
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If NEW_DATADIR is not a directory then a warning is printed.
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We don't signal an error for backward compatibility. */
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void
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set_gdb_data_directory (const char *new_datadir)
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{
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struct stat st;
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if (stat (new_datadir, &st) < 0)
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{
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int save_errno = errno;
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fprintf_unfiltered (gdb_stderr, "Warning: ");
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print_sys_errmsg (new_datadir, save_errno);
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}
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else if (!S_ISDIR (st.st_mode))
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warning (_("%s is not a directory."), new_datadir);
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xfree (gdb_datadir);
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gdb_datadir = gdb_realpath (new_datadir);
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/* gdb_realpath won't return an absolute path if the path doesn't exist,
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but we still want to record an absolute path here. If the user entered
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"../foo" and "../foo" doesn't exist then we'll record $(pwd)/../foo which
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isn't canonical, but that's ok. */
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if (!IS_ABSOLUTE_PATH (gdb_datadir))
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{
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char *abs_datadir = gdb_abspath (gdb_datadir);
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xfree (gdb_datadir);
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gdb_datadir = abs_datadir;
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}
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}
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/* Relocate a file or directory. PROGNAME is the name by which gdb
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was invoked (i.e., argv[0]). INITIAL is the default value for the
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file or directory. FLAG is true if the value is relocatable, false
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otherwise. Returns a newly allocated string; this may return NULL
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under the same conditions as make_relative_prefix. */
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static char *
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relocate_path (const char *progname, const char *initial, int flag)
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{
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if (flag)
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return make_relative_prefix (progname, BINDIR, initial);
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return xstrdup (initial);
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}
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/* Like relocate_path, but specifically checks for a directory.
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INITIAL is relocated according to the rules of relocate_path. If
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the result is a directory, it is used; otherwise, INITIAL is used.
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The chosen directory is then canonicalized using lrealpath. This
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function always returns a newly-allocated string. */
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char *
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relocate_gdb_directory (const char *initial, int flag)
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{
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char *dir;
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dir = relocate_path (gdb_program_name, initial, flag);
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if (dir)
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{
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struct stat s;
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if (*dir == '\0' || stat (dir, &s) != 0 || !S_ISDIR (s.st_mode))
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{
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xfree (dir);
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dir = NULL;
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}
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}
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if (!dir)
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dir = xstrdup (initial);
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/* Canonicalize the directory. */
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if (*dir)
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{
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char *canon_sysroot = lrealpath (dir);
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if (canon_sysroot)
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{
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xfree (dir);
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dir = canon_sysroot;
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}
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}
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return dir;
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}
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/* Compute the locations of init files that GDB should source and
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return them in SYSTEM_GDBINIT, HOME_GDBINIT, LOCAL_GDBINIT. If
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there is no system gdbinit (resp. home gdbinit and local gdbinit)
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to be loaded, then SYSTEM_GDBINIT (resp. HOME_GDBINIT and
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LOCAL_GDBINIT) is set to NULL. */
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static void
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get_init_files (const char **system_gdbinit,
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const char **home_gdbinit,
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const char **local_gdbinit)
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{
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static const char *sysgdbinit = NULL;
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static char *homeinit = NULL;
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static const char *localinit = NULL;
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static int initialized = 0;
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if (!initialized)
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{
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struct stat homebuf, cwdbuf, s;
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char *homedir;
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if (SYSTEM_GDBINIT[0])
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{
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int datadir_len = strlen (GDB_DATADIR);
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int sys_gdbinit_len = strlen (SYSTEM_GDBINIT);
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char *relocated_sysgdbinit;
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/* If SYSTEM_GDBINIT lives in data-directory, and data-directory
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has been provided, search for SYSTEM_GDBINIT there. */
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if (gdb_datadir_provided
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&& datadir_len < sys_gdbinit_len
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&& filename_ncmp (SYSTEM_GDBINIT, GDB_DATADIR, datadir_len) == 0
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&& IS_DIR_SEPARATOR (SYSTEM_GDBINIT[datadir_len]))
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{
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/* Append the part of SYSTEM_GDBINIT that follows GDB_DATADIR
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to gdb_datadir. */
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char *tmp_sys_gdbinit = xstrdup (SYSTEM_GDBINIT + datadir_len);
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char *p;
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for (p = tmp_sys_gdbinit; IS_DIR_SEPARATOR (*p); ++p)
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continue;
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relocated_sysgdbinit = concat (gdb_datadir, SLASH_STRING, p,
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NULL);
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xfree (tmp_sys_gdbinit);
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}
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else
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{
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relocated_sysgdbinit = relocate_path (gdb_program_name,
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SYSTEM_GDBINIT,
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SYSTEM_GDBINIT_RELOCATABLE);
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}
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if (relocated_sysgdbinit && stat (relocated_sysgdbinit, &s) == 0)
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sysgdbinit = relocated_sysgdbinit;
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else
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xfree (relocated_sysgdbinit);
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}
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homedir = getenv ("HOME");
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/* If the .gdbinit file in the current directory is the same as
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the $HOME/.gdbinit file, it should not be sourced. homebuf
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and cwdbuf are used in that purpose. Make sure that the stats
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are zero in case one of them fails (this guarantees that they
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won't match if either exists). */
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memset (&homebuf, 0, sizeof (struct stat));
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memset (&cwdbuf, 0, sizeof (struct stat));
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if (homedir)
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{
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homeinit = xstrprintf ("%s/%s", homedir, gdbinit);
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if (stat (homeinit, &homebuf) != 0)
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{
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xfree (homeinit);
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homeinit = NULL;
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}
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}
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if (stat (gdbinit, &cwdbuf) == 0)
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{
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if (!homeinit
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|| memcmp ((char *) &homebuf, (char *) &cwdbuf,
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sizeof (struct stat)))
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localinit = gdbinit;
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}
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initialized = 1;
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}
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*system_gdbinit = sysgdbinit;
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*home_gdbinit = homeinit;
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*local_gdbinit = localinit;
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}
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/* Try to set up an alternate signal stack for SIGSEGV handlers.
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This allows us to handle SIGSEGV signals generated when the
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normal process stack is exhausted. If this stack is not set
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up (sigaltstack is unavailable or fails) and a SIGSEGV is
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generated when the normal stack is exhausted then the program
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will behave as though no SIGSEGV handler was installed. */
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static void
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setup_alternate_signal_stack (void)
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{
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#ifdef HAVE_SIGALTSTACK
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stack_t ss;
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ss.ss_sp = xmalloc (SIGSTKSZ);
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ss.ss_size = SIGSTKSZ;
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ss.ss_flags = 0;
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sigaltstack(&ss, NULL);
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#endif
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}
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/* Call command_loop. If it happens to return, pass that through as a
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non-zero return status. */
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static int
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captured_command_loop (void *data)
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{
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/* Top-level execution commands can be run in the background from
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here on. */
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interpreter_async = 1;
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current_interp_command_loop ();
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/* FIXME: cagney/1999-11-05: A correct command_loop() implementaton
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would clean things up (restoring the cleanup chain) to the state
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they were just prior to the call. Technically, this means that
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the do_cleanups() below is redundant. Unfortunately, many FUNCs
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are not that well behaved. do_cleanups should either be replaced
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with a do_cleanups call (to cover the problem) or an assertion
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check to detect bad FUNCs code. */
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do_cleanups (all_cleanups ());
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/* If the command_loop returned, normally (rather than threw an
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error) we try to quit. If the quit is aborted, catch_errors()
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which called this catch the signal and restart the command
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loop. */
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quit_command (NULL, instream == stdin);
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return 1;
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}
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/* Handle command errors thrown from within
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catch_command_errors/catch_command_errors_const. */
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static int
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handle_command_errors (volatile struct gdb_exception e)
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{
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if (e.reason < 0)
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{
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exception_print (gdb_stderr, e);
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/* If any exception escaped to here, we better enable stdin.
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Otherwise, any command that calls async_disable_stdin, and
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then throws, will leave stdin inoperable. */
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async_enable_stdin ();
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return 0;
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}
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return 1;
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}
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/* Type of the command callback passed to catch_command_errors. */
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typedef void (catch_command_errors_ftype) (char *, int);
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/* Wrap calls to commands run before the event loop is started. */
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static int
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catch_command_errors (catch_command_errors_ftype *command,
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char *arg, int from_tty, return_mask mask)
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{
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volatile struct gdb_exception e;
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TRY_CATCH (e, mask)
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{
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int was_sync = sync_execution;
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command (arg, from_tty);
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maybe_wait_sync_command_done (was_sync);
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}
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return handle_command_errors (e);
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}
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/* Type of the command callback passed to catch_command_errors_const. */
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typedef void (catch_command_errors_const_ftype) (const char *, int);
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/* Like catch_command_errors, but works with const command and args. */
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static int
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catch_command_errors_const (catch_command_errors_const_ftype *command,
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const char *arg, int from_tty, return_mask mask)
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{
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volatile struct gdb_exception e;
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TRY_CATCH (e, mask)
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{
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int was_sync = sync_execution;
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command (arg, from_tty);
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maybe_wait_sync_command_done (was_sync);
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}
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return handle_command_errors (e);
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}
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/* Arguments of --command option and its counterpart. */
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typedef struct cmdarg {
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/* Type of this option. */
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enum {
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/* Option type -x. */
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CMDARG_FILE,
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/* Option type -ex. */
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CMDARG_COMMAND,
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/* Option type -ix. */
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CMDARG_INIT_FILE,
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/* Option type -iex. */
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CMDARG_INIT_COMMAND
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} type;
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/* Value of this option - filename or the GDB command itself. String memory
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is not owned by this structure despite it is 'const'. */
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char *string;
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} cmdarg_s;
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/* Define type VEC (cmdarg_s). */
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DEF_VEC_O (cmdarg_s);
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static int
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captured_main (void *data)
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{
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struct captured_main_args *context = data;
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int argc = context->argc;
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char **argv = context->argv;
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static int quiet = 0;
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static int set_args = 0;
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static int inhibit_home_gdbinit = 0;
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/* Pointers to various arguments from command line. */
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char *symarg = NULL;
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char *execarg = NULL;
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char *pidarg = NULL;
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char *corearg = NULL;
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char *pid_or_core_arg = NULL;
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char *cdarg = NULL;
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char *ttyarg = NULL;
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/* These are static so that we can take their address in an
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initializer. */
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static int print_help;
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static int print_version;
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static int print_configuration;
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/* Pointers to all arguments of --command option. */
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VEC (cmdarg_s) *cmdarg_vec = NULL;
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struct cmdarg *cmdarg_p;
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/* Indices of all arguments of --directory option. */
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char **dirarg;
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/* Allocated size. */
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int dirsize;
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/* Number of elements used. */
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int ndir;
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/* gdb init files. */
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const char *system_gdbinit;
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const char *home_gdbinit;
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const char *local_gdbinit;
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int i;
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int save_auto_load;
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struct objfile *objfile;
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struct cleanup *pre_stat_chain;
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#ifdef HAVE_SBRK
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/* Set this before calling make_command_stats_cleanup. */
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lim_at_start = (char *) sbrk (0);
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#endif
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pre_stat_chain = make_command_stats_cleanup (0);
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#if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
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setlocale (LC_MESSAGES, "");
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#endif
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#if defined (HAVE_SETLOCALE)
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setlocale (LC_CTYPE, "");
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#endif
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bindtextdomain (PACKAGE, LOCALEDIR);
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textdomain (PACKAGE);
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bfd_init ();
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notice_open_fds ();
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make_cleanup (VEC_cleanup (cmdarg_s), &cmdarg_vec);
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dirsize = 1;
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dirarg = (char **) xmalloc (dirsize * sizeof (*dirarg));
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ndir = 0;
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clear_quit_flag ();
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saved_command_line = (char *) xmalloc (saved_command_line_size);
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saved_command_line[0] = '\0';
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instream = stdin;
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#ifdef __MINGW32__
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/* Ensure stderr is unbuffered. A Cygwin pty or pipe is implemented
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as a Windows pipe, and Windows buffers on pipes. */
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setvbuf (stderr, NULL, _IONBF, BUFSIZ);
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#endif
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gdb_stdout = stdio_fileopen (stdout);
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gdb_stderr = stderr_fileopen ();
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gdb_stdlog = gdb_stderr; /* for moment */
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gdb_stdtarg = gdb_stderr; /* for moment */
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gdb_stdin = stdio_fileopen (stdin);
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gdb_stdtargerr = gdb_stderr; /* for moment */
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gdb_stdtargin = gdb_stdin; /* for moment */
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#ifdef __MINGW32__
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/* On Windows, argv[0] is not necessarily set to absolute form when
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GDB is found along PATH, without which relocation doesn't work. */
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gdb_program_name = windows_get_absolute_argv0 (argv[0]);
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#else
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gdb_program_name = xstrdup (argv[0]);
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#endif
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/* Prefix warning messages with the command name. */
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warning_pre_print = xstrprintf ("%s: warning: ", gdb_program_name);
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if (! getcwd (gdb_dirbuf, sizeof (gdb_dirbuf)))
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perror_warning_with_name (_("error finding working directory"));
|
|
|
|
current_directory = gdb_dirbuf;
|
|
|
|
/* Set the sysroot path. */
|
|
gdb_sysroot = relocate_gdb_directory (TARGET_SYSTEM_ROOT,
|
|
TARGET_SYSTEM_ROOT_RELOCATABLE);
|
|
|
|
debug_file_directory = relocate_gdb_directory (DEBUGDIR,
|
|
DEBUGDIR_RELOCATABLE);
|
|
|
|
gdb_datadir = relocate_gdb_directory (GDB_DATADIR,
|
|
GDB_DATADIR_RELOCATABLE);
|
|
|
|
#ifdef WITH_PYTHON_PATH
|
|
{
|
|
/* For later use in helping Python find itself. */
|
|
char *tmp = concat (WITH_PYTHON_PATH, SLASH_STRING, "lib", NULL);
|
|
|
|
python_libdir = relocate_gdb_directory (tmp, PYTHON_PATH_RELOCATABLE);
|
|
xfree (tmp);
|
|
}
|
|
#endif
|
|
|
|
#ifdef RELOC_SRCDIR
|
|
add_substitute_path_rule (RELOC_SRCDIR,
|
|
make_relative_prefix (gdb_program_name, BINDIR,
|
|
RELOC_SRCDIR));
|
|
#endif
|
|
|
|
/* There will always be an interpreter. Either the one passed into
|
|
this captured main, or one specified by the user at start up, or
|
|
the console. Initialize the interpreter to the one requested by
|
|
the application. */
|
|
interpreter_p = xstrdup (context->interpreter_p);
|
|
|
|
/* Parse arguments and options. */
|
|
{
|
|
int c;
|
|
/* When var field is 0, use flag field to record the equivalent
|
|
short option (or arbitrary numbers starting at 10 for those
|
|
with no equivalent). */
|
|
enum {
|
|
OPT_SE = 10,
|
|
OPT_CD,
|
|
OPT_ANNOTATE,
|
|
OPT_STATISTICS,
|
|
OPT_TUI,
|
|
OPT_NOWINDOWS,
|
|
OPT_WINDOWS,
|
|
OPT_IX,
|
|
OPT_IEX
|
|
};
|
|
static struct option long_options[] =
|
|
{
|
|
{"tui", no_argument, 0, OPT_TUI},
|
|
{"xdb", no_argument, &xdb_commands, 1},
|
|
{"dbx", no_argument, &dbx_commands, 1},
|
|
{"readnow", no_argument, &readnow_symbol_files, 1},
|
|
{"r", no_argument, &readnow_symbol_files, 1},
|
|
{"quiet", no_argument, &quiet, 1},
|
|
{"q", no_argument, &quiet, 1},
|
|
{"silent", no_argument, &quiet, 1},
|
|
{"nh", no_argument, &inhibit_home_gdbinit, 1},
|
|
{"nx", no_argument, &inhibit_gdbinit, 1},
|
|
{"n", no_argument, &inhibit_gdbinit, 1},
|
|
{"batch-silent", no_argument, 0, 'B'},
|
|
{"batch", no_argument, &batch_flag, 1},
|
|
|
|
/* This is a synonym for "--annotate=1". --annotate is now
|
|
preferred, but keep this here for a long time because people
|
|
will be running emacses which use --fullname. */
|
|
{"fullname", no_argument, 0, 'f'},
|
|
{"f", no_argument, 0, 'f'},
|
|
|
|
{"annotate", required_argument, 0, OPT_ANNOTATE},
|
|
{"help", no_argument, &print_help, 1},
|
|
{"se", required_argument, 0, OPT_SE},
|
|
{"symbols", required_argument, 0, 's'},
|
|
{"s", required_argument, 0, 's'},
|
|
{"exec", required_argument, 0, 'e'},
|
|
{"e", required_argument, 0, 'e'},
|
|
{"core", required_argument, 0, 'c'},
|
|
{"c", required_argument, 0, 'c'},
|
|
{"pid", required_argument, 0, 'p'},
|
|
{"p", required_argument, 0, 'p'},
|
|
{"command", required_argument, 0, 'x'},
|
|
{"eval-command", required_argument, 0, 'X'},
|
|
{"version", no_argument, &print_version, 1},
|
|
{"configuration", no_argument, &print_configuration, 1},
|
|
{"x", required_argument, 0, 'x'},
|
|
{"ex", required_argument, 0, 'X'},
|
|
{"init-command", required_argument, 0, OPT_IX},
|
|
{"init-eval-command", required_argument, 0, OPT_IEX},
|
|
{"ix", required_argument, 0, OPT_IX},
|
|
{"iex", required_argument, 0, OPT_IEX},
|
|
#ifdef GDBTK
|
|
{"tclcommand", required_argument, 0, 'z'},
|
|
{"enable-external-editor", no_argument, 0, 'y'},
|
|
{"editor-command", required_argument, 0, 'w'},
|
|
#endif
|
|
{"ui", required_argument, 0, 'i'},
|
|
{"interpreter", required_argument, 0, 'i'},
|
|
{"i", required_argument, 0, 'i'},
|
|
{"directory", required_argument, 0, 'd'},
|
|
{"d", required_argument, 0, 'd'},
|
|
{"data-directory", required_argument, 0, 'D'},
|
|
{"D", required_argument, 0, 'D'},
|
|
{"cd", required_argument, 0, OPT_CD},
|
|
{"tty", required_argument, 0, 't'},
|
|
{"baud", required_argument, 0, 'b'},
|
|
{"b", required_argument, 0, 'b'},
|
|
{"nw", no_argument, NULL, OPT_NOWINDOWS},
|
|
{"nowindows", no_argument, NULL, OPT_NOWINDOWS},
|
|
{"w", no_argument, NULL, OPT_WINDOWS},
|
|
{"windows", no_argument, NULL, OPT_WINDOWS},
|
|
{"statistics", no_argument, 0, OPT_STATISTICS},
|
|
{"write", no_argument, &write_files, 1},
|
|
{"args", no_argument, &set_args, 1},
|
|
{"l", required_argument, 0, 'l'},
|
|
{"return-child-result", no_argument, &return_child_result, 1},
|
|
{0, no_argument, 0, 0}
|
|
};
|
|
|
|
while (1)
|
|
{
|
|
int option_index;
|
|
|
|
c = getopt_long_only (argc, argv, "",
|
|
long_options, &option_index);
|
|
if (c == EOF || set_args)
|
|
break;
|
|
|
|
/* Long option that takes an argument. */
|
|
if (c == 0 && long_options[option_index].flag == 0)
|
|
c = long_options[option_index].val;
|
|
|
|
switch (c)
|
|
{
|
|
case 0:
|
|
/* Long option that just sets a flag. */
|
|
break;
|
|
case OPT_SE:
|
|
symarg = optarg;
|
|
execarg = optarg;
|
|
break;
|
|
case OPT_CD:
|
|
cdarg = optarg;
|
|
break;
|
|
case OPT_ANNOTATE:
|
|
/* FIXME: what if the syntax is wrong (e.g. not digits)? */
|
|
annotation_level = atoi (optarg);
|
|
break;
|
|
case OPT_STATISTICS:
|
|
/* Enable the display of both time and space usage. */
|
|
set_per_command_time (1);
|
|
set_per_command_space (1);
|
|
break;
|
|
case OPT_TUI:
|
|
/* --tui is equivalent to -i=tui. */
|
|
#ifdef TUI
|
|
xfree (interpreter_p);
|
|
interpreter_p = xstrdup (INTERP_TUI);
|
|
#else
|
|
error (_("%s: TUI mode is not supported"), gdb_program_name);
|
|
#endif
|
|
break;
|
|
case OPT_WINDOWS:
|
|
/* FIXME: cagney/2003-03-01: Not sure if this option is
|
|
actually useful, and if it is, what it should do. */
|
|
#ifdef GDBTK
|
|
/* --windows is equivalent to -i=insight. */
|
|
xfree (interpreter_p);
|
|
interpreter_p = xstrdup (INTERP_INSIGHT);
|
|
#endif
|
|
break;
|
|
case OPT_NOWINDOWS:
|
|
/* -nw is equivalent to -i=console. */
|
|
xfree (interpreter_p);
|
|
interpreter_p = xstrdup (INTERP_CONSOLE);
|
|
break;
|
|
case 'f':
|
|
annotation_level = 1;
|
|
break;
|
|
case 's':
|
|
symarg = optarg;
|
|
break;
|
|
case 'e':
|
|
execarg = optarg;
|
|
break;
|
|
case 'c':
|
|
corearg = optarg;
|
|
break;
|
|
case 'p':
|
|
pidarg = optarg;
|
|
break;
|
|
case 'x':
|
|
{
|
|
struct cmdarg cmdarg = { CMDARG_FILE, optarg };
|
|
|
|
VEC_safe_push (cmdarg_s, cmdarg_vec, &cmdarg);
|
|
}
|
|
break;
|
|
case 'X':
|
|
{
|
|
struct cmdarg cmdarg = { CMDARG_COMMAND, optarg };
|
|
|
|
VEC_safe_push (cmdarg_s, cmdarg_vec, &cmdarg);
|
|
}
|
|
break;
|
|
case OPT_IX:
|
|
{
|
|
struct cmdarg cmdarg = { CMDARG_INIT_FILE, optarg };
|
|
|
|
VEC_safe_push (cmdarg_s, cmdarg_vec, &cmdarg);
|
|
}
|
|
break;
|
|
case OPT_IEX:
|
|
{
|
|
struct cmdarg cmdarg = { CMDARG_INIT_COMMAND, optarg };
|
|
|
|
VEC_safe_push (cmdarg_s, cmdarg_vec, &cmdarg);
|
|
}
|
|
break;
|
|
case 'B':
|
|
batch_flag = batch_silent = 1;
|
|
gdb_stdout = ui_file_new();
|
|
break;
|
|
case 'D':
|
|
if (optarg[0] == '\0')
|
|
error (_("%s: empty path for `--data-directory'"),
|
|
gdb_program_name);
|
|
set_gdb_data_directory (optarg);
|
|
gdb_datadir_provided = 1;
|
|
break;
|
|
#ifdef GDBTK
|
|
case 'z':
|
|
{
|
|
extern int gdbtk_test (char *);
|
|
|
|
if (!gdbtk_test (optarg))
|
|
error (_("%s: unable to load tclcommand file \"%s\""),
|
|
gdb_program_name, optarg);
|
|
break;
|
|
}
|
|
case 'y':
|
|
/* Backwards compatibility only. */
|
|
break;
|
|
case 'w':
|
|
{
|
|
/* Set the external editor commands when gdb is farming out files
|
|
to be edited by another program. */
|
|
extern char *external_editor_command;
|
|
|
|
external_editor_command = xstrdup (optarg);
|
|
break;
|
|
}
|
|
#endif /* GDBTK */
|
|
case 'i':
|
|
xfree (interpreter_p);
|
|
interpreter_p = xstrdup (optarg);
|
|
break;
|
|
case 'd':
|
|
dirarg[ndir++] = optarg;
|
|
if (ndir >= dirsize)
|
|
{
|
|
dirsize *= 2;
|
|
dirarg = (char **) xrealloc ((char *) dirarg,
|
|
dirsize * sizeof (*dirarg));
|
|
}
|
|
break;
|
|
case 't':
|
|
ttyarg = optarg;
|
|
break;
|
|
case 'q':
|
|
quiet = 1;
|
|
break;
|
|
case 'b':
|
|
{
|
|
int i;
|
|
char *p;
|
|
|
|
i = strtol (optarg, &p, 0);
|
|
if (i == 0 && p == optarg)
|
|
warning (_("could not set baud rate to `%s'."),
|
|
optarg);
|
|
else
|
|
baud_rate = i;
|
|
}
|
|
break;
|
|
case 'l':
|
|
{
|
|
int i;
|
|
char *p;
|
|
|
|
i = strtol (optarg, &p, 0);
|
|
if (i == 0 && p == optarg)
|
|
warning (_("could not set timeout limit to `%s'."),
|
|
optarg);
|
|
else
|
|
remote_timeout = i;
|
|
}
|
|
break;
|
|
|
|
case '?':
|
|
error (_("Use `%s --help' for a complete list of options."),
|
|
gdb_program_name);
|
|
}
|
|
}
|
|
|
|
if (batch_flag)
|
|
quiet = 1;
|
|
}
|
|
|
|
/* Try to set up an alternate signal stack for SIGSEGV handlers. */
|
|
setup_alternate_signal_stack ();
|
|
|
|
/* Initialize all files. Give the interpreter a chance to take
|
|
control of the console via the deprecated_init_ui_hook (). */
|
|
gdb_init (gdb_program_name);
|
|
|
|
/* Now that gdb_init has created the initial inferior, we're in
|
|
position to set args for that inferior. */
|
|
if (set_args)
|
|
{
|
|
/* The remaining options are the command-line options for the
|
|
inferior. The first one is the sym/exec file, and the rest
|
|
are arguments. */
|
|
if (optind >= argc)
|
|
error (_("%s: `--args' specified but no program specified"),
|
|
gdb_program_name);
|
|
|
|
symarg = argv[optind];
|
|
execarg = argv[optind];
|
|
++optind;
|
|
set_inferior_args_vector (argc - optind, &argv[optind]);
|
|
}
|
|
else
|
|
{
|
|
/* OK, that's all the options. */
|
|
|
|
/* The first argument, if specified, is the name of the
|
|
executable. */
|
|
if (optind < argc)
|
|
{
|
|
symarg = argv[optind];
|
|
execarg = argv[optind];
|
|
optind++;
|
|
}
|
|
|
|
/* If the user hasn't already specified a PID or the name of a
|
|
core file, then a second optional argument is allowed. If
|
|
present, this argument should be interpreted as either a
|
|
PID or a core file, whichever works. */
|
|
if (pidarg == NULL && corearg == NULL && optind < argc)
|
|
{
|
|
pid_or_core_arg = argv[optind];
|
|
optind++;
|
|
}
|
|
|
|
/* Any argument left on the command line is unexpected and
|
|
will be ignored. Inform the user. */
|
|
if (optind < argc)
|
|
fprintf_unfiltered (gdb_stderr,
|
|
_("Excess command line "
|
|
"arguments ignored. (%s%s)\n"),
|
|
argv[optind],
|
|
(optind == argc - 1) ? "" : " ...");
|
|
}
|
|
|
|
/* Lookup gdbinit files. Note that the gdbinit file name may be
|
|
overriden during file initialization, so get_init_files should be
|
|
called after gdb_init. */
|
|
get_init_files (&system_gdbinit, &home_gdbinit, &local_gdbinit);
|
|
|
|
/* Do these (and anything which might call wrap_here or *_filtered)
|
|
after initialize_all_files() but before the interpreter has been
|
|
installed. Otherwize the help/version messages will be eaten by
|
|
the interpreter's output handler. */
|
|
|
|
if (print_version)
|
|
{
|
|
print_gdb_version (gdb_stdout);
|
|
wrap_here ("");
|
|
printf_filtered ("\n");
|
|
exit (0);
|
|
}
|
|
|
|
if (print_help)
|
|
{
|
|
print_gdb_help (gdb_stdout);
|
|
fputs_unfiltered ("\n", gdb_stdout);
|
|
exit (0);
|
|
}
|
|
|
|
if (print_configuration)
|
|
{
|
|
print_gdb_configuration (gdb_stdout);
|
|
wrap_here ("");
|
|
printf_filtered ("\n");
|
|
exit (0);
|
|
}
|
|
|
|
/* FIXME: cagney/2003-02-03: The big hack (part 1 of 2) that lets
|
|
GDB retain the old MI1 interpreter startup behavior. Output the
|
|
copyright message before the interpreter is installed. That way
|
|
it isn't encapsulated in MI output. */
|
|
if (!quiet && strcmp (interpreter_p, INTERP_MI1) == 0)
|
|
{
|
|
/* Print all the junk at the top, with trailing "..." if we are
|
|
about to read a symbol file (possibly slowly). */
|
|
print_gdb_version (gdb_stdout);
|
|
if (symarg)
|
|
printf_filtered ("..");
|
|
wrap_here ("");
|
|
printf_filtered ("\n");
|
|
gdb_flush (gdb_stdout); /* Force to screen during slow
|
|
operations. */
|
|
}
|
|
|
|
/* Install the default UI. All the interpreters should have had a
|
|
look at things by now. Initialize the default interpreter. */
|
|
|
|
{
|
|
/* Find it. */
|
|
struct interp *interp = interp_lookup (interpreter_p);
|
|
|
|
if (interp == NULL)
|
|
error (_("Interpreter `%s' unrecognized"), interpreter_p);
|
|
/* Install it. */
|
|
if (!interp_set (interp, 1))
|
|
error (_("Interpreter `%s' failed to initialize."), interpreter_p);
|
|
}
|
|
|
|
/* FIXME: cagney/2003-02-03: The big hack (part 2 of 2) that lets
|
|
GDB retain the old MI1 interpreter startup behavior. Output the
|
|
copyright message after the interpreter is installed when it is
|
|
any sane interpreter. */
|
|
if (!quiet && !current_interp_named_p (INTERP_MI1))
|
|
{
|
|
/* Print all the junk at the top, with trailing "..." if we are
|
|
about to read a symbol file (possibly slowly). */
|
|
print_gdb_version (gdb_stdout);
|
|
if (symarg)
|
|
printf_filtered ("..");
|
|
wrap_here ("");
|
|
printf_filtered ("\n");
|
|
gdb_flush (gdb_stdout); /* Force to screen during slow
|
|
operations. */
|
|
}
|
|
|
|
/* Set off error and warning messages with a blank line. */
|
|
xfree (warning_pre_print);
|
|
warning_pre_print = _("\nwarning: ");
|
|
|
|
/* Read and execute the system-wide gdbinit file, if it exists.
|
|
This is done *before* all the command line arguments are
|
|
processed; it sets global parameters, which are independent of
|
|
what file you are debugging or what directory you are in. */
|
|
if (system_gdbinit && !inhibit_gdbinit)
|
|
catch_command_errors_const (source_script, system_gdbinit,
|
|
0, RETURN_MASK_ALL);
|
|
|
|
/* Read and execute $HOME/.gdbinit file, if it exists. This is done
|
|
*before* all the command line arguments are processed; it sets
|
|
global parameters, which are independent of what file you are
|
|
debugging or what directory you are in. */
|
|
|
|
if (home_gdbinit && !inhibit_gdbinit && !inhibit_home_gdbinit)
|
|
catch_command_errors_const (source_script,
|
|
home_gdbinit, 0, RETURN_MASK_ALL);
|
|
|
|
/* Process '-ix' and '-iex' options early. */
|
|
for (i = 0; VEC_iterate (cmdarg_s, cmdarg_vec, i, cmdarg_p); i++)
|
|
switch (cmdarg_p->type)
|
|
{
|
|
case CMDARG_INIT_FILE:
|
|
catch_command_errors_const (source_script, cmdarg_p->string,
|
|
!batch_flag, RETURN_MASK_ALL);
|
|
break;
|
|
case CMDARG_INIT_COMMAND:
|
|
catch_command_errors (execute_command, cmdarg_p->string,
|
|
!batch_flag, RETURN_MASK_ALL);
|
|
break;
|
|
}
|
|
|
|
/* Now perform all the actions indicated by the arguments. */
|
|
if (cdarg != NULL)
|
|
{
|
|
catch_command_errors (cd_command, cdarg, 0, RETURN_MASK_ALL);
|
|
}
|
|
|
|
for (i = 0; i < ndir; i++)
|
|
catch_command_errors (directory_switch, dirarg[i], 0, RETURN_MASK_ALL);
|
|
xfree (dirarg);
|
|
|
|
/* Skip auto-loading section-specified scripts until we've sourced
|
|
local_gdbinit (which is often used to augment the source search
|
|
path). */
|
|
save_auto_load = global_auto_load;
|
|
global_auto_load = 0;
|
|
|
|
if (execarg != NULL
|
|
&& symarg != NULL
|
|
&& strcmp (execarg, symarg) == 0)
|
|
{
|
|
/* The exec file and the symbol-file are the same. If we can't
|
|
open it, better only print one error message.
|
|
catch_command_errors returns non-zero on success! */
|
|
if (catch_command_errors_const (exec_file_attach, execarg,
|
|
!batch_flag, RETURN_MASK_ALL))
|
|
catch_command_errors_const (symbol_file_add_main, symarg,
|
|
!batch_flag, RETURN_MASK_ALL);
|
|
}
|
|
else
|
|
{
|
|
if (execarg != NULL)
|
|
catch_command_errors_const (exec_file_attach, execarg,
|
|
!batch_flag, RETURN_MASK_ALL);
|
|
if (symarg != NULL)
|
|
catch_command_errors_const (symbol_file_add_main, symarg,
|
|
!batch_flag, RETURN_MASK_ALL);
|
|
}
|
|
|
|
if (corearg && pidarg)
|
|
error (_("Can't attach to process and specify "
|
|
"a core file at the same time."));
|
|
|
|
if (corearg != NULL)
|
|
catch_command_errors (core_file_command, corearg,
|
|
!batch_flag, RETURN_MASK_ALL);
|
|
else if (pidarg != NULL)
|
|
catch_command_errors (attach_command, pidarg,
|
|
!batch_flag, RETURN_MASK_ALL);
|
|
else if (pid_or_core_arg)
|
|
{
|
|
/* The user specified 'gdb program pid' or gdb program core'.
|
|
If pid_or_core_arg's first character is a digit, try attach
|
|
first and then corefile. Otherwise try just corefile. */
|
|
|
|
if (isdigit (pid_or_core_arg[0]))
|
|
{
|
|
if (catch_command_errors (attach_command, pid_or_core_arg,
|
|
!batch_flag, RETURN_MASK_ALL) == 0)
|
|
catch_command_errors (core_file_command, pid_or_core_arg,
|
|
!batch_flag, RETURN_MASK_ALL);
|
|
}
|
|
else /* Can't be a pid, better be a corefile. */
|
|
catch_command_errors (core_file_command, pid_or_core_arg,
|
|
!batch_flag, RETURN_MASK_ALL);
|
|
}
|
|
|
|
if (ttyarg != NULL)
|
|
set_inferior_io_terminal (ttyarg);
|
|
|
|
/* Error messages should no longer be distinguished with extra output. */
|
|
warning_pre_print = _("warning: ");
|
|
|
|
/* Read the .gdbinit file in the current directory, *if* it isn't
|
|
the same as the $HOME/.gdbinit file (it should exist, also). */
|
|
if (local_gdbinit)
|
|
{
|
|
auto_load_local_gdbinit_pathname = gdb_realpath (local_gdbinit);
|
|
|
|
if (!inhibit_gdbinit && auto_load_local_gdbinit
|
|
&& file_is_auto_load_safe (local_gdbinit,
|
|
_("auto-load: Loading .gdbinit "
|
|
"file \"%s\".\n"),
|
|
local_gdbinit))
|
|
{
|
|
auto_load_local_gdbinit_loaded = 1;
|
|
|
|
catch_command_errors_const (source_script, local_gdbinit, 0,
|
|
RETURN_MASK_ALL);
|
|
}
|
|
}
|
|
|
|
/* Now that all .gdbinit's have been read and all -d options have been
|
|
processed, we can read any scripts mentioned in SYMARG.
|
|
We wait until now because it is common to add to the source search
|
|
path in local_gdbinit. */
|
|
global_auto_load = save_auto_load;
|
|
ALL_OBJFILES (objfile)
|
|
load_auto_scripts_for_objfile (objfile);
|
|
|
|
/* Process '-x' and '-ex' options. */
|
|
for (i = 0; VEC_iterate (cmdarg_s, cmdarg_vec, i, cmdarg_p); i++)
|
|
switch (cmdarg_p->type)
|
|
{
|
|
case CMDARG_FILE:
|
|
catch_command_errors_const (source_script, cmdarg_p->string,
|
|
!batch_flag, RETURN_MASK_ALL);
|
|
break;
|
|
case CMDARG_COMMAND:
|
|
catch_command_errors (execute_command, cmdarg_p->string,
|
|
!batch_flag, RETURN_MASK_ALL);
|
|
break;
|
|
}
|
|
|
|
/* Read in the old history after all the command files have been
|
|
read. */
|
|
init_history ();
|
|
|
|
if (batch_flag)
|
|
{
|
|
/* We have hit the end of the batch file. */
|
|
quit_force (NULL, 0);
|
|
}
|
|
|
|
/* Show time and/or space usage. */
|
|
do_cleanups (pre_stat_chain);
|
|
|
|
/* NOTE: cagney/1999-11-07: There is probably no reason for not
|
|
moving this loop and the code found in captured_command_loop()
|
|
into the command_loop() proper. The main thing holding back that
|
|
change - SET_TOP_LEVEL() - has been eliminated. */
|
|
while (1)
|
|
{
|
|
catch_errors (captured_command_loop, 0, "", RETURN_MASK_ALL);
|
|
}
|
|
/* No exit -- exit is through quit_command. */
|
|
}
|
|
|
|
int
|
|
gdb_main (struct captured_main_args *args)
|
|
{
|
|
catch_errors (captured_main, args, "", RETURN_MASK_ALL);
|
|
/* The only way to end up here is by an error (normal exit is
|
|
handled by quit_force()), hence always return an error status. */
|
|
return 1;
|
|
}
|
|
|
|
|
|
/* Don't use *_filtered for printing help. We don't want to prompt
|
|
for continue no matter how small the screen or how much we're going
|
|
to print. */
|
|
|
|
static void
|
|
print_gdb_help (struct ui_file *stream)
|
|
{
|
|
const char *system_gdbinit;
|
|
const char *home_gdbinit;
|
|
const char *local_gdbinit;
|
|
|
|
get_init_files (&system_gdbinit, &home_gdbinit, &local_gdbinit);
|
|
|
|
/* Note: The options in the list below are only approximately sorted
|
|
in the alphabetical order, so as to group closely related options
|
|
together. */
|
|
fputs_unfiltered (_("\
|
|
This is the GNU debugger. Usage:\n\n\
|
|
gdb [options] [executable-file [core-file or process-id]]\n\
|
|
gdb [options] --args executable-file [inferior-arguments ...]\n\n\
|
|
"), stream);
|
|
fputs_unfiltered (_("\
|
|
Selection of debuggee and its files:\n\n\
|
|
--args Arguments after executable-file are passed to inferior\n\
|
|
--core=COREFILE Analyze the core dump COREFILE.\n\
|
|
--exec=EXECFILE Use EXECFILE as the executable.\n\
|
|
--pid=PID Attach to running process PID.\n\
|
|
--directory=DIR Search for source files in DIR.\n\
|
|
--se=FILE Use FILE as symbol file and executable file.\n\
|
|
--symbols=SYMFILE Read symbols from SYMFILE.\n\
|
|
--readnow Fully read symbol files on first access.\n\
|
|
--write Set writing into executable and core files.\n\n\
|
|
"), stream);
|
|
fputs_unfiltered (_("\
|
|
Initial commands and command files:\n\n\
|
|
--command=FILE, -x Execute GDB commands from FILE.\n\
|
|
--init-command=FILE, -ix\n\
|
|
Like -x but execute commands before loading inferior.\n\
|
|
--eval-command=COMMAND, -ex\n\
|
|
Execute a single GDB command.\n\
|
|
May be used multiple times and in conjunction\n\
|
|
with --command.\n\
|
|
--init-eval-command=COMMAND, -iex\n\
|
|
Like -ex but before loading inferior.\n\
|
|
--nh Do not read ~/.gdbinit.\n\
|
|
--nx Do not read any .gdbinit files in any directory.\n\n\
|
|
"), stream);
|
|
fputs_unfiltered (_("\
|
|
Output and user interface control:\n\n\
|
|
--fullname Output information used by emacs-GDB interface.\n\
|
|
--interpreter=INTERP\n\
|
|
Select a specific interpreter / user interface\n\
|
|
--tty=TTY Use TTY for input/output by the program being debugged.\n\
|
|
-w Use the GUI interface.\n\
|
|
--nw Do not use the GUI interface.\n\
|
|
"), stream);
|
|
#if defined(TUI)
|
|
fputs_unfiltered (_("\
|
|
--tui Use a terminal user interface.\n\
|
|
"), stream);
|
|
#endif
|
|
fputs_unfiltered (_("\
|
|
--dbx DBX compatibility mode.\n\
|
|
--xdb XDB compatibility mode.\n\
|
|
-q, --quiet, --silent\n\
|
|
Do not print version number on startup.\n\n\
|
|
"), stream);
|
|
fputs_unfiltered (_("\
|
|
Operating modes:\n\n\
|
|
--batch Exit after processing options.\n\
|
|
--batch-silent Like --batch, but suppress all gdb stdout output.\n\
|
|
--return-child-result\n\
|
|
GDB exit code will be the child's exit code.\n\
|
|
--configuration Print details about GDB configuration and then exit.\n\
|
|
--help Print this message and then exit.\n\
|
|
--version Print version information and then exit.\n\n\
|
|
Remote debugging options:\n\n\
|
|
-b BAUDRATE Set serial port baud rate used for remote debugging.\n\
|
|
-l TIMEOUT Set timeout in seconds for remote debugging.\n\n\
|
|
Other options:\n\n\
|
|
--cd=DIR Change current directory to DIR.\n\
|
|
--data-directory=DIR, -D\n\
|
|
Set GDB's data-directory to DIR.\n\
|
|
"), stream);
|
|
fputs_unfiltered (_("\n\
|
|
At startup, GDB reads the following init files and executes their commands:\n\
|
|
"), stream);
|
|
if (system_gdbinit)
|
|
fprintf_unfiltered (stream, _("\
|
|
* system-wide init file: %s\n\
|
|
"), system_gdbinit);
|
|
if (home_gdbinit)
|
|
fprintf_unfiltered (stream, _("\
|
|
* user-specific init file: %s\n\
|
|
"), home_gdbinit);
|
|
if (local_gdbinit)
|
|
fprintf_unfiltered (stream, _("\
|
|
* local init file (see also 'set auto-load local-gdbinit'): ./%s\n\
|
|
"), local_gdbinit);
|
|
fputs_unfiltered (_("\n\
|
|
For more information, type \"help\" from within GDB, or consult the\n\
|
|
GDB manual (available as on-line info or a printed manual).\n\
|
|
"), stream);
|
|
if (REPORT_BUGS_TO[0] && stream == gdb_stdout)
|
|
fprintf_unfiltered (stream, _("\
|
|
Report bugs to \"%s\".\n\
|
|
"), REPORT_BUGS_TO);
|
|
}
|