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/* SPDX-License-Identifier: BSD-2-Clause */
/*
* Copyright (c) 2018 embedded brains GmbH. 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 COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT OWNER OR CONTRIBUTORS 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 <bsp/iocopy.h>
static void atsam_do_copy(
uint8_t *dst,
const uint8_t *src,
size_t n,
bool aligned
)
{
if (aligned) {
while (n > 3) {
*(uint32_t *)dst = *(uint32_t *)src;
dst += 4;
src += 4;
n -= 4;
}
}
while (n > 0) {
*dst = *src;
++dst;
++src;
--n;
}
}
void atsam_copy_to_io(void *dst, const void *src, size_t n)
{
atsam_do_copy(dst, src, n, ((uintptr_t)dst) % 4 == 0);
}
void atsam_copy_from_io(void *dst, const void *src, size_t n)
{
atsam_do_copy(dst, src, n, ((uintptr_t)src) % 4 == 0);
}
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