1/* 2 * $NetBSD: bcmp.S,v 1.1 2001/06/19 00:25:04 fvdl Exp $ 3 * $FreeBSD: src/lib/libc/amd64/string/bcmp.S,v 1.3 2008/11/02 01:10:54 peter Exp $ 4 */ 5 6#include <machine/asm.h> 7 8ENTRY(bcmp) 9 cld /* set compare direction forward */ 10 11 movq %rdx,%rcx /* compare by words */ 12 shrq $3,%rcx 13 repe 14 cmpsq 15 jne L1 16 17 movq %rdx,%rcx /* compare remainder by bytes */ 18 andq $7,%rcx 19 repe 20 cmpsb 21L1: 22 setne %al 23 movsbl %al,%eax 24 ret 25END(bcmp) 26 27 .section .note.GNU-stack,"",%progbits 28