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#include <machine/asm.h>
ENTRY(bcmp)
xorl %eax,%eax /* clear return value */
cld /* set compare direction forward */
movq %rdx,%rcx /* compare by words */
shrq $3,%rcx
repe
cmpsq
jne L1
movq %rdx,%rcx /* compare remainder by bytes */
andq $7,%rcx
repe
cmpsb
je L2
L1: incl %eax
L2: ret
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