/*
* Copyright (C) 2001-2004 Jakub Jermar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - 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.
* - 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.
*/
#include <memstr.h>
#include <arch/types.h>
/** Copy block of memory
*
* Copy cnt bytes from src address to dst address.
* The copying is done byte-by-byte. The source
* and destination memory areas cannot overlap.
*
* @param src Origin address to copy from.
* @param dst Origin address to copy to.
* @param cnt Number of bytes to copy.
*
*/
void *_memcpy(void * dst, const void *src, size_t cnt)
{
int i;
for (i=0; i<cnt; i++)
*((__u8 *) (dst + i)) = *((__u8 *) (src + i));
return (char *)src;
}
/** Fill block of memory
*
* Fill cnt bytes at dst address with the value x.
* The filling is done byte-by-byte.
*
* @param dst Origin address to fill.
* @param cnt Number of bytes to fill.
* @param x Value to fill.
*
*/
void _memsetb(__address dst, size_t cnt, __u8 x)
{
int i;
__u8 *p = (__u8 *) dst;
for(i=0; i<cnt; i++)
p[i] = x;
}
/** Fill block of memory
*
* Fill cnt words at dst address with the value x.
* The filling is done word-by-word.
*
* @param dst Origin address to fill.
* @param cnt Number of words to fill.
* @param x Value to fill.
*
*/
void _memsetw(__address dst, size_t cnt, __u16 x)
{
int i;
__u16 *p = (__u16 *) dst;
for(i=0; i<cnt; i++)
p[i] = x;
}