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/*
+----------------------------------------------------------------------+
| PHP Version 7 |
+----------------------------------------------------------------------+
| Copyright (c) The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Author: |
+----------------------------------------------------------------------+
*/
#include "php.h"
#ifndef HAVE_EXPLICIT_BZERO
/* $OpenBSD: explicit_bzero.c,v 1.4 2015/08/31 02:53:57 guenther Exp $ */
/*
* Public domain.
* Written by Matthew Dempsky.
*/
#include <string.h>
PHPAPI void php_explicit_bzero(void *dst, size_t siz)
{
#if HAVE_EXPLICIT_MEMSET
explicit_memset(dst, 0, siz);
#elif defined(PHP_WIN32)
RtlSecureZeroMemory(dst, siz);
#elif defined(__GNUC__)
memset(dst, 0, siz);
asm __volatile__("" :: "r"(dst) : "memory");
#else
size_t i = 0;
volatile unsigned char *buf = (volatile unsigned char *)dst;
for (; i < siz; i ++)
buf[i] = 0;
#endif
}
#endif
|
