src/string/x86_64/memcpy.s


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.global memcpy
.type memcpy,@function
memcpy:
	mov %rdi,%rax
	cmp $8,%rdx
	jc 1f
	test $7,%edi
	jz 1f
2:	movsb
	dec %rdx
	test $7,%edi
	jnz 2b
1:	mov %rdx,%rcx
	shr $3,%rcx
	rep
	movsq
	and $7,%edx
	jz 1f
2:	movsb
	dec %edx
	jnz 2b
1:	ret