#ifndef _ASM_X86_STRING_H #define _ASM_X86_STRING_H #define ARCH_FAST_MEMCPY static inline void *__inline_memcpy(void *to, const void *from, size_t n) { unsigned long d0, d1, d2; asm volatile("rep ; movsl\n\t" "testb $2,%b4\n\t" "je 1f\n\t" "movsw\n" "1:\ttestb $1,%b4\n\t" "je 2f\n\t" "movsb\n" "2:" : "=&c" (d0), "=&D" (d1), "=&S" (d2) : "0" (n / 4), "q" (n), "1" ((long)to), "2" ((long)from) : "memory"); return to; } #endif