1/* $OpenBSD: s_copysign.S,v 1.5 2016/09/12 19:47:01 guenther Exp $ */ 2/* 3 * Written by J.T. Conklin <jtc@NetBSD.org>. 4 * Public domain. 5 */ 6 7#include <machine/asm.h> 8 9.Lpos: 10 .quad 0x8000000000000000 11.Lneg: 12 .quad 0x7fffffffffffffff 13 14ENTRY(copysign) 15 movq .Lpos(%rip),%xmm2 16 movq .Lneg(%rip),%xmm3 17 pand %xmm2,%xmm1 18 pand %xmm3,%xmm0 19 por %xmm1,%xmm0 20 ret 21END(copysign) 22