1#include "DEFS.h" 2 3ENTRY(bcmp) 4 xorl %eax,%eax /* clear return value */ 5 cld /* set compare direction forward */ 6 7 movq %rdx,%rcx /* compare by words */ 8 shrq $3,%rcx 9 repe 10 cmpsq 11 jne L1 12 13 movq %rdx,%rcx /* compare remainder by bytes */ 14 andq $7,%rcx 15 repe 16 cmpsb 17 je L2 18 19L1: incl %eax 20L2: ret 21END_WEAK(bcmp) 22