| /* |
| * Copyright 2018 The Hafnium Authors. |
| * |
| * 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 |
| * |
| * https://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 "hf/arch/std.h" |
| |
| void *memset(void *s, int c, size_t n) |
| { |
| char *p = (char *)s; |
| |
| while (n--) { |
| *p++ = c; |
| } |
| |
| return s; |
| } |
| |
| void *memcpy(void *dst, const void *src, size_t n) |
| { |
| char *x = dst; |
| const char *y = src; |
| |
| while (n--) { |
| *x = *y; |
| x++; |
| y++; |
| } |
| |
| return dst; |
| } |
| |
| void *memmove(void *dst, const void *src, size_t n) |
| { |
| char *x; |
| const char *y; |
| |
| if (dst < src) { |
| return memcpy(dst, src, n); |
| } |
| |
| x = (char *)dst + n - 1; |
| y = (const char *)src + n - 1; |
| |
| while (n--) { |
| *x = *y; |
| x--; |
| y--; |
| } |
| |
| return dst; |
| } |
| |
| int memcmp(const void *a, const void *b, size_t n) |
| { |
| const char *x = a; |
| const char *y = b; |
| |
| while (n--) { |
| if (*x != *y) { |
| return *x - *y; |
| } |
| x++; |
| y++; |
| } |
| |
| return 0; |
| } |
| |
| int strcmp(const char *a, const char *b) |
| { |
| const char *x = a; |
| const char *y = b; |
| |
| while (*x != 0 && *y != 0) { |
| if (*x != *y) { |
| return *x - *y; |
| } |
| x++; |
| y++; |
| } |
| |
| return *x - *y; |
| } |