xref: /illumos-gate/usr/src/lib/libm/amd64/src/floorl.S (revision 5d9d9091)
125c28e83SPiotr Jasiukajtis/*
225c28e83SPiotr Jasiukajtis * CDDL HEADER START
325c28e83SPiotr Jasiukajtis *
425c28e83SPiotr Jasiukajtis * The contents of this file are subject to the terms of the
525c28e83SPiotr Jasiukajtis * Common Development and Distribution License (the "License").
625c28e83SPiotr Jasiukajtis * You may not use this file except in compliance with the License.
725c28e83SPiotr Jasiukajtis *
825c28e83SPiotr Jasiukajtis * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
925c28e83SPiotr Jasiukajtis * or http://www.opensolaris.org/os/licensing.
1025c28e83SPiotr Jasiukajtis * See the License for the specific language governing permissions
1125c28e83SPiotr Jasiukajtis * and limitations under the License.
1225c28e83SPiotr Jasiukajtis *
1325c28e83SPiotr Jasiukajtis * When distributing Covered Code, include this CDDL HEADER in each
1425c28e83SPiotr Jasiukajtis * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
1525c28e83SPiotr Jasiukajtis * If applicable, add the following below this CDDL HEADER, with the
1625c28e83SPiotr Jasiukajtis * fields enclosed by brackets "[]" replaced with your own identifying
1725c28e83SPiotr Jasiukajtis * information: Portions Copyright [yyyy] [name of copyright owner]
1825c28e83SPiotr Jasiukajtis *
1925c28e83SPiotr Jasiukajtis * CDDL HEADER END
2025c28e83SPiotr Jasiukajtis */
2125c28e83SPiotr Jasiukajtis/*
2225c28e83SPiotr Jasiukajtis * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
2325c28e83SPiotr Jasiukajtis */
2425c28e83SPiotr Jasiukajtis/*
2525c28e83SPiotr Jasiukajtis * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
2625c28e83SPiotr Jasiukajtis * Use is subject to license terms.
2725c28e83SPiotr Jasiukajtis */
2825c28e83SPiotr Jasiukajtis
2925c28e83SPiotr Jasiukajtis	.file	"floorl.s"
3025c28e83SPiotr Jasiukajtis
3125c28e83SPiotr Jasiukajtis#include "libm.h"
3225c28e83SPiotr JasiukajtisLIBM_ANSI_PRAGMA_WEAK(ceill,function)
3325c28e83SPiotr JasiukajtisLIBM_ANSI_PRAGMA_WEAK(floorl,function)
3425c28e83SPiotr Jasiukajtis
3525c28e83SPiotr Jasiukajtis	ENTRY(ceill)
3625c28e83SPiotr Jasiukajtis	subq	$16,%rsp
3725c28e83SPiotr Jasiukajtis	fstcw	(%rsp)
3825c28e83SPiotr Jasiukajtis	fldt	24(%rsp)
3925c28e83SPiotr Jasiukajtis	movw	(%rsp),%cx
4025c28e83SPiotr Jasiukajtis	orw	$0x0c00,%cx
4125c28e83SPiotr Jasiukajtis	xorw	$0x0400,%cx
4225c28e83SPiotr Jasiukajtis	movw	%cx,4(%rsp)
4325c28e83SPiotr Jasiukajtis	fldcw	4(%rsp)			/ set RD = up
4425c28e83SPiotr Jasiukajtis	frndint
4525c28e83SPiotr Jasiukajtis	fstcw	4(%rsp)			/ restore RD
4625c28e83SPiotr Jasiukajtis	movw	4(%rsp),%dx
4725c28e83SPiotr Jasiukajtis	andw	$0xf3ff,%dx
4825c28e83SPiotr Jasiukajtis	movw	(%rsp),%cx
4925c28e83SPiotr Jasiukajtis	andw	$0x0c00,%cx
5025c28e83SPiotr Jasiukajtis	orw	%dx,%cx
5125c28e83SPiotr Jasiukajtis	movw	%cx,(%rsp)
5225c28e83SPiotr Jasiukajtis	fldcw	(%rsp)			/ restore RD
5325c28e83SPiotr Jasiukajtis	addq	$16,%rsp
5425c28e83SPiotr Jasiukajtis	ret
5525c28e83SPiotr Jasiukajtis	.align	16
5625c28e83SPiotr Jasiukajtis	SET_SIZE(ceill)
5725c28e83SPiotr Jasiukajtis
5825c28e83SPiotr Jasiukajtis
5925c28e83SPiotr Jasiukajtis	ENTRY(floorl)
6025c28e83SPiotr Jasiukajtis	subq	$16,%rsp
6125c28e83SPiotr Jasiukajtis	fstcw	(%rsp)
6225c28e83SPiotr Jasiukajtis	fldt	24(%rsp)
6325c28e83SPiotr Jasiukajtis	movw	(%rsp),%cx
6425c28e83SPiotr Jasiukajtis	orw	$0x0c00,%cx
6525c28e83SPiotr Jasiukajtis	xorw	$0x0800,%cx
6625c28e83SPiotr Jasiukajtis	movw	%cx,4(%rsp)
6725c28e83SPiotr Jasiukajtis	fldcw	4(%rsp)			/ set RD = down
6825c28e83SPiotr Jasiukajtis	frndint
6925c28e83SPiotr Jasiukajtis	fstcw	4(%rsp)			/ restore RD
7025c28e83SPiotr Jasiukajtis	movw	4(%rsp),%dx
7125c28e83SPiotr Jasiukajtis	andw	$0xf3ff,%dx
7225c28e83SPiotr Jasiukajtis	movw	(%rsp),%cx
7325c28e83SPiotr Jasiukajtis	andw	$0x0c00,%cx
7425c28e83SPiotr Jasiukajtis	orw	%dx,%cx
7525c28e83SPiotr Jasiukajtis	movw	%cx,(%rsp)
7625c28e83SPiotr Jasiukajtis	fldcw	(%rsp)			/ restore RD
7725c28e83SPiotr Jasiukajtis	addq	$16,%rsp
7825c28e83SPiotr Jasiukajtis	ret
7925c28e83SPiotr Jasiukajtis	.align	16
8025c28e83SPiotr Jasiukajtis	SET_SIZE(floorl)
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