glibc/sysdeps/unix/sysv/linux/init-first.c
Roland McGrath dde2652bb6 * sysdeps/generic/libc-start.c (__libc_start_main): Do
DL_SYSDEP_OSCHECK here.
	* sysdeps/unix/sysv/linux/init-first.c (init): Not here.
	* sysdeps/unix/sysv/linux/dl-osinfo.h: Include <fcntl.h>.

	* sysdeps/generic/libc-tls.c (__libc_setup_tls): Bail if
	argument TCBSIZE <= TLS_INIT_TCB_SIZE, not just if it's zero.

	* sysdeps/generic/dl-tls.c (_dl_allocate_tls_init): Check l_tls_offset
	instead of l_type to decide whether to use TLS_DTV_UNALLOCATED.

	* include/link.h: Comment typo fix.

2002-12-01  Roland McGrath  <roland@frob.com>

	* sysdeps/mach/hurd/bits/posix_opt.h (_POSIX_FSYNC): Set to 200112L.
	(_POSIX_SPAWN, _POSIX_MAPPED_FILES, _POSIX_MEMLOCK_RANGE,
	_POSIX_MEMORY_PROTECTION): Likewise.
	(_POSIX_POLL, _POSIX_SELECT): Removed.
2002-12-01 22:14:57 +00:00

125 lines
3.4 KiB
C

/* Initialization code run first thing by the ELF startup code. Linux version.
Copyright (C) 1995-1999,2000,01,02 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>
#include <sysdep.h>
#include <fpu_control.h>
#include <sys/param.h>
#include <sys/types.h>
#include <libc-internal.h>
#include <ldsodefs.h>
/* The function is called from assembly stubs the compiler can't see. */
static void init (int, char **, char **) __attribute__ ((unused));
/* Set nonzero if we have to be prepared for more then one libc being
used in the process. Safe assumption if initializer never runs. */
int __libc_multiple_libcs attribute_hidden = 1;
/* Remember the command line argument and enviroment contents for
later calls of initializers for dynamic libraries. */
int __libc_argc attribute_hidden;
char **__libc_argv attribute_hidden;
static void
init (int argc, char **argv, char **envp)
{
#ifdef USE_NONOPTION_FLAGS
extern void __getopt_clean_environment (char **);
#endif
__libc_multiple_libcs = &_dl_starting_up && !_dl_starting_up;
/* Make sure we don't initialize twice. */
if (!__libc_multiple_libcs)
{
/* Set the FPU control word to the proper default value if the
kernel would use a different value. (In a static program we
don't have this information.) */
#ifdef SHARED
if (__fpu_control != GL(dl_fpu_control))
#endif
__setfpucw (__fpu_control);
}
/* Save the command-line arguments. */
__libc_argc = argc;
__libc_argv = argv;
__environ = envp;
#ifndef SHARED
__libc_init_secure ();
/* First the initialization which normally would be done by the
dynamic linker. */
_dl_non_dynamic_init ();
#endif
__init_misc (argc, argv, envp);
#ifdef USE_NONOPTION_FLAGS
/* This is a hack to make the special getopt in GNU libc working. */
__getopt_clean_environment (envp);
#endif
#ifdef SHARED
__libc_global_ctors ();
#endif
}
#ifdef SHARED
strong_alias (init, _init);
extern void __libc_init_first (void);
void
__libc_init_first (void)
{
}
#else
extern void __libc_init_first (int argc, char **argv, char **envp);
void
__libc_init_first (int argc, char **argv, char **envp)
{
init (argc, argv, envp);
}
#endif
/* This function is defined here so that if this file ever gets into
ld.so we will get a link error. Having this file silently included
in ld.so causes disaster, because the _init definition above will
cause ld.so to gain an init function, which is not a cool thing. */
extern void _dl_start (void) __attribute__ ((noreturn));
void
_dl_start (void)
{
abort ();
}