1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * arch/mips/boot/compressed/string.c 4 * 5 * Very small subset of simple string routines 6 */ 7 8 #include <linux/compiler_attributes.h> 9 #include <linux/types.h> 10 memcpy(void * dest,const void * src,size_t n)11 void *memcpy(void *dest, const void *src, size_t n) 12 { 13 int i; 14 const char *s = src; 15 char *d = dest; 16 17 for (i = 0; i < n; i++) 18 d[i] = s[i]; 19 return dest; 20 } 21 memset(void * s,int c,size_t n)22 void *memset(void *s, int c, size_t n) 23 { 24 int i; 25 char *ss = s; 26 27 for (i = 0; i < n; i++) 28 ss[i] = c; 29 return s; 30 } 31 memmove(void * dest,const void * src,size_t n)32 void * __weak memmove(void *dest, const void *src, size_t n) 33 { 34 unsigned int i; 35 const char *s = src; 36 char *d = dest; 37 38 if ((uintptr_t)dest < (uintptr_t)src) { 39 for (i = 0; i < n; i++) 40 d[i] = s[i]; 41 } else { 42 for (i = n; i > 0; i--) 43 d[i - 1] = s[i - 1]; 44 } 45 return dest; 46 } 47