| /* 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; |
| } |