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/* $OpenBSD: c++rt0.c,v 1.6 1999/02/01 17:02:47 pefo Exp $ */
/* $NetBSD: c++rt0.c,v 1.6 1997/12/29 15:36:50 pk 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.
*/
/*
* Run-time module for GNU C++ compiled shared libraries.
*
* The linker constructs the following arrays of pointers to global
* constructors and destructors. The first element contains the
* number of pointers in each.
* The tables are also null-terminated.
*/
#include <stdlib.h>
#include <sys/exec.h>
#if !defined(NATIVE_EXEC_ELF)
/*
* We make the __{C,D}TOR_LIST__ symbols appear as type `SETD' and
* include a dummy local function in the set. This keeps references
* to these symbols local to the shared object this module is linked to.
*/
static void dummy __P((void)) { return; }
/* Note: this is "a.out" dependent. */
__asm(".stabs \"___CTOR_LIST__\",22,0,0,_dummy");
__asm(".stabs \"___DTOR_LIST__\",22,0,0,_dummy");
#endif
extern void (*__CTOR_LIST__[]) __P((void));
extern void (*__DTOR_LIST__[]) __P((void));
static void __dtors __P((void));
static void __ctors __P((void));
static void
__dtors()
{
unsigned long i = (unsigned long) __DTOR_LIST__[0];
void (**p)(void) = __DTOR_LIST__ + i;
while (i--)
(**p--)();
}
static void
__ctors()
{
void (**p)(void) = __CTOR_LIST__ + 1;
while (*p)
(**p++)();
}
#if !defined(NATIVE_EXEC_ELF)
extern void __init __P((void)) asm(".init");
extern void __fini __P((void)) asm(".fini");
#else
extern void __init __P((void)) __attribute__ ((section (".init")));
extern void __fini __P((void)) __attribute__ ((section (".fini")));
#endif
void
__init()
{
static int initialized = 0;
/*
* Call global constructors.
* Arrange to call global destructors at exit.
*/
if (!initialized) {
initialized = 1;
__ctors();
}
}
void
__fini()
{
/*
* Call global destructors.
*/
__dtors();
}
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