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/*
* 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 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
.file "lmul.s"
/ Double long multiply routine.
#include "SYS.h"
.set lop,8
.set rop,16
.set ans,0
ENTRY(lmul)
popl %eax
xchgl %eax,0(%esp)
pushl %eax
movl lop+4(%esp),%eax
mull rop(%esp) / high(lop) * low(rop)
movl %eax,%ecx / partial high(product)
movl rop+4(%esp),%eax
mull lop(%esp) / high(rop) * low(lop)
addl %eax,%ecx / partial sum of high(product)
movl rop(%esp),%eax
mull lop(%esp) / low(rop) * low(lop)
addl %edx,%ecx / final high(product)
movl %eax,%edx
popl %eax
movl %edx,ans(%eax)
movl %ecx,ans+4(%eax)
ret
SET_SIZE(lmul)
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