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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
*/
#if defined(_BOOT)
#include <sys/salib.h>
#else
#include <sys/systm.h>
#endif
/*
* Implementations of functions described in memory(3C).
* These functions match the section 3C manpages.
*/
/*
* The SunStudio compiler may generate calls to _memmove, _memset,
* and _memcpy; So we need to make sure that the correct symbols
* exist for these calls. We also use _memset to work around some
* standards namespacing challenges.
*/
#pragma weak _memmove = memmove
void *
memmove(void *s1, const void *s2, size_t n)
{
#if defined(_BOOT)
bcopy(s2, s1, n);
#else
ovbcopy(s2, s1, n);
#endif
return (s1);
}
#pragma weak _memset = memset
void *
memset(void *s, int c, size_t n)
{
unsigned char *t;
if ((unsigned char)c == '\0')
bzero(s, n);
else {
for (t = (unsigned char *)s; n > 0; n--)
*t++ = (unsigned char)c;
}
return (s);
}
int
memcmp(const void *s1, const void *s2, size_t n)
{
const uchar_t *ps1 = s1;
const uchar_t *ps2 = s2;
if (s1 != s2 && n != 0) {
do {
if (*ps1++ != *ps2++)
return (ps1[-1] - ps2[-1]);
} while (--n != 0);
}
return (0);
}
#pragma weak _memcpy = memcpy
void *
memcpy(void *s1, const void *s2, size_t n)
{
bcopy(s2, s1, n);
return (s1);
}
void *
memchr(const void *sptr, int c1, size_t n)
{
if (n != 0) {
unsigned char c = (unsigned char)c1;
const unsigned char *sp = sptr;
do {
if (*sp++ == c)
return ((void *)--sp);
} while (--n != 0);
}
return (NULL);
}
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