1 #include "../string.c" 2 3 #ifdef CONFIG_X86_32 4 void *memcpy(void *dest, const void *src, size_t n) 5 { 6 int d0, d1, d2; 7 asm volatile( 8 "rep ; movsl\n\t" 9 "movl %4,%%ecx\n\t" 10 "rep ; movsb\n\t" 11 : "=&c" (d0), "=&D" (d1), "=&S" (d2) 12 : "0" (n >> 2), "g" (n & 3), "1" (dest), "2" (src) 13 : "memory"); 14 15 return dest; 16 } 17 #else 18 void *memcpy(void *dest, const void *src, size_t n) 19 { 20 long d0, d1, d2; 21 asm volatile( 22 "rep ; movsq\n\t" 23 "movq %4,%%rcx\n\t" 24 "rep ; movsb\n\t" 25 : "=&c" (d0), "=&D" (d1), "=&S" (d2) 26 : "0" (n >> 3), "g" (n & 7), "1" (dest), "2" (src) 27 : "memory"); 28 29 return dest; 30 } 31 #endif 32 33 void *memset(void *s, int c, size_t n) 34 { 35 int i; 36 char *ss = s; 37 38 for (i = 0; i < n; i++) 39 ss[i] = c; 40 return s; 41 } 42