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/* $Id$ */
/* From: NetBSD: crtbegin.c,v 1.2 1997/03/21 05:47:28 cgd Exp */
/*
* Copyright (c) 1993 Paul Kranenburg
* All rights reserved.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Paul Kranenburg.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
#ifndef ECOFF_COMPAT
/*
* XXX EVENTUALLY SHOULD BE MERGED BACK WITH c++rt0.c
*/
/*
* Run-time module which handles constructors and destructors,
* and NetBSD identification.
*
* The linker constructs the following arrays of pointers to global
* constructors and destructors. The first element contains the
* number of pointers in each or -1 to indicate that the run-time
* code should figure out how many there are. The tables are also
* null-terminated.
*/
#include <sys/param.h>
#include <sys/exec.h>
#include <sys/exec_elf.h>
#include <stdlib.h>
/* #include "sysident.h" */
static void (*__CTOR_LIST__[1]) __P((void))
__attribute__((section(".ctors"))) = { (void *)-1 }; /* XXX */
static void (*__DTOR_LIST__[1]) __P((void))
__attribute__((section(".dtors"))) = { (void *)-1 }; /* XXX */
static void __dtors __P((void));
static void __ctors __P((void));
static void
__dtors()
{
unsigned long i = (unsigned long) __DTOR_LIST__[0];
void (**p)(void);
if (i == -1) {
for (i = 1; __DTOR_LIST__[i] != NULL; i++)
;
i--;
}
p = __DTOR_LIST__ + i;
while (i--)
(**p--)();
}
static void
__ctors()
{
void (**p)(void) = __CTOR_LIST__ + 1;
while (*p)
(**p++)();
}
extern void __init(void) __attribute__((section(".init")));
void
__init()
{
static int initialized = 0;
/*
* Call global constructors.
* Arrange to call global destructors at exit.
*/
if (!initialized) {
initialized = 1;
__ctors();
}
}
extern void __fini(void) __attribute__((section(".fini")));
void
__fini()
{
/*
* Call global destructors.
*/
__dtors();
}
#endif /* !ECOFF_COMPAT */
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