/*      $OpenBSD: s_copysign.S,v 1.8 2018/07/03 22:43:34 mortimer Exp $ */
/*
 * Written by J.T. Conklin <jtc@NetBSD.org>.
 * Public domain.
 */

#include <machine/asm.h>

#include "abi.h"

        .section .rodata
.Lpos:
        .quad   0x8000000000000000
.Lneg:
        .quad   0x7fffffffffffffff

ENTRY(copysign)
        RETGUARD_SETUP(copysign, r11)
        movq    .Lpos(%rip),%xmm2
        movq    .Lneg(%rip),%xmm3
        pand    %xmm2,%xmm1
        pand    %xmm3,%xmm0
        por     %xmm1,%xmm0
        RETGUARD_CHECK(copysign, r11)
        ret
END_STD(copysign)