trunc.s revision ddc0e0b53c661f6e439e3b7072b3ef353eadb4af
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2011 Nexenta Systems, Inc. All rights reserved.
*/
/*
* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
.file "trunc.s"
#include "libm.h"
LIBM_ANSI_PRAGMA_WEAK(trunc,function)
ENTRY(trunc)
movl %esp,%eax
subl $8,%esp
fstcw -8(%eax)
fldl 4(%eax)
movw -8(%eax),%cx
orw $0x0c00,%cx
movw %cx,-4(%eax)
fldcw -4(%eax) / set RD = to_zero
frndint
fstcw -4(%eax)
movw -4(%eax),%dx
andw $0xf3ff,%dx
movw -8(%eax),%cx
andw $0x0c00,%cx
orw %dx,%cx
movw %cx,-8(%eax)
fldcw -8(%eax) / restore RD
addl $8,%esp
ret
.align 4
SET_SIZE(trunc)