text: /*
   * 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;
  }
  