54 lines
1.9 KiB
C
54 lines
1.9 KiB
C
|
/* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
|
||
|
|
*
|
||
|
|
* do_global_dtors - invoke global destructors
|
||
|
|
*
|
||
|
|
* Copyright (c) 2018-2019 Dimitar Dimitrov <dimitar@dinux.eu>
|
||
|
|
* 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.
|
||
|
|
*
|
||
|
|
* 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.
|
||
|
|
*/
|
||
|
|
#include <stdint.h>
|
||
|
|
#include <_ansi.h>
|
||
|
|
#include "syscall.h"
|
||
|
|
|
||
|
|
extern void *__fini_array_start;
|
||
|
|
extern void *__fini_array_end;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* _do_global_dtors
|
||
|
|
*/
|
||
|
|
void
|
||
|
|
_do_global_dtors (void)
|
||
|
|
{
|
||
|
|
/* ABI dictates pointers in init/fini arrays are 16-bit. */
|
||
|
|
const uint16_t *end = (uint16_t *)&__fini_array_end;
|
||
|
|
const uint16_t *begin = (uint16_t *)&__fini_array_start;
|
||
|
|
const uint16_t *p;
|
||
|
|
void (**dtor) (void);
|
||
|
|
|
||
|
|
/* call destructors in reverse order */
|
||
|
|
for (p = end; p > begin; ) {
|
||
|
|
p--;
|
||
|
|
dtor = (void *)p;
|
||
|
|
(*dtor) ();
|
||
|
|
}
|
||
|
|
}
|