1/*
2 * Copyright (c) 2003-2005, 2007 Todd C. Miller <Todd.Miller@courtesan.com>
3 *
4 * Permission to use, copy, modify, and distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17#include <config.h>
18
19#include <sys/types.h>
20
21#include "missing.h"
22
23/*
24 * Like bzero(3) but with a volatile pointer.  The hope is that
25 * the compiler will not be able to optimize away this function.
26 */
27void
28zero_bytes(v, n)
29    volatile void *v;
30    size_t n;
31{
32    volatile char *p, *ep;
33
34    for (p = v, ep = p + n; p < ep; p++)
35	*p = 0;
36    return;
37}
38