/*      $OpenBSD: s_floorf.S,v 1.6 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"

ENTRY(floorf)
        RETGUARD_SETUP(floorf, r11)
        movss   %xmm0, -4(%rsp)
        fstcw   -8(%rsp)
        movw    -8(%rsp),%dx
        orw     $0x0400,%dx
        andw    $0xf7ff,%dx  
        movw    %dx,-12(%rsp)
        fldcw   -12(%rsp)
        flds    -4(%rsp)
        frndint
        fldcw   -8(%rsp)
        fstps   -4(%rsp)
        movss   -4(%rsp),%xmm0
        RETGUARD_CHECK(floorf, r11)
        ret
END_STD(floorf)