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/* Copyright 2013-2016 IBM Corp
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
* implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <string.h>
#include <ccan/short_types/short_types.h>
#include <io.h>
void* memcpy_from_ci(void *destpp, const void *srcpp, size_t len)
{
const size_t block = sizeof(uint64_t);
unsigned long int destp = (long int) destpp;
unsigned long int srcp = (long int) srcpp;
/* Copy as many blocks as possible if srcp is block aligned */
if ((srcp % block) == 0) {
while ((len - block) > -1) {
*((uint64_t*) destp) = in_be64((uint64_t*)srcp);
srcp += block;
destp += block;
len -= block;
}
}
/*
* Byte-by-byte copy if srcp is not block aligned or len is/becomes
* less than one block
*/
while (len > 0) {
*((uint8_t*) destp) = in_8((uint8_t*)srcp);
srcp += 1;
destp += 1;
len--;
}
return destpp;
}
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