1#include <machine/asm.h> 2 3#if defined(LIBC_SCCS) 4 RCSID("$NetBSD: bcmp.S,v 1.3 2014/03/22 19:16:34 jakllsch Exp $") 5#endif 6 7ENTRY(bcmp) 8 xorl %eax,%eax /* clear return value */ 9 10 movq %rdx,%rcx /* compare by words */ 11 shrq $3,%rcx 12 repe 13 cmpsq 14 jne L1 15 16 movq %rdx,%rcx /* compare remainder by bytes */ 17 andq $7,%rcx 18 repe 19 cmpsb 20 je L2 21 22L1: incl %eax 23L2: ret 24END(bcmp) 25