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/* $NetBSD: initfini.c,v 1.11 2013/08/19 22:14:37 matt Exp $ */
/*-
* Copyright (c) 2007 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Andrew Doran.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__RCSID("$NetBSD: initfini.c,v 1.11 2013/08/19 22:14:37 matt Exp $");
#ifdef _LIBC
#include "namespace.h"
#endif
#include <sys/param.h>
#include <sys/exec.h>
#include <sys/tls.h>
#include <stdbool.h>
void _libc_init(void) __attribute__((__constructor__, __used__));
void __guard_setup(void);
void __libc_thr_init(void);
void __libc_atomic_init(void);
void __libc_atexit_init(void);
void __libc_env_init(void);
#if defined(__HAVE_TLS_VARIANT_I) || defined(__HAVE_TLS_VARIANT_II)
__dso_hidden void __libc_static_tls_setup(void);
#endif
#ifdef __weak_alias
__weak_alias(_dlauxinfo,___dlauxinfo)
static void *__libc_dlauxinfo;
void *___dlauxinfo(void) __pure;
void *
___dlauxinfo(void)
{
return __libc_dlauxinfo;
}
#endif
static bool libc_initialised;
void _libc_init(void);
/*
* Declare as common symbol to allow new libc with older binaries to
* not trigger an undefined reference.
*/
struct ps_strings *__ps_strings;
/*
* _libc_init is called twice. The first time explicitly by crt0.o
* (for newer versions) and the second time as indirectly via _init().
*/
void __section(".text.startup")
_libc_init(void)
{
if (libc_initialised)
return;
libc_initialised = 1;
if (__ps_strings != NULL)
__libc_dlauxinfo = __ps_strings->ps_argvstr +
__ps_strings->ps_nargvstr + __ps_strings->ps_nenvstr + 2;
/* For -fstack-protector */
__guard_setup();
#if defined(__minix) && defined(_REENTRANT)
/* Atomic operations */
__libc_atomic_init();
#endif /* defined(__minix) && defined(_REENTRANT) */
#if defined(__HAVE_TLS_VARIANT_I) || defined(__HAVE_TLS_VARIANT_II)
/* Initialize TLS for statically linked programs. */
__libc_static_tls_setup();
#endif
#if defined(__minix) && defined(_REENTRANT)
/* Threads */
__libc_thr_init();
#endif /* defined(__minix) && defined(_REENTRANT) */
/* Initialize the atexit mutexes */
__libc_atexit_init();
/* Initialize environment memory RB tree. */
__libc_env_init();
}
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