2N/A/*
2N/A * CDDL HEADER START
2N/A *
2N/A * The contents of this file are subject to the terms of the
2N/A * Common Development and Distribution License (the "License").
2N/A * You may not use this file except in compliance with the License.
2N/A *
2N/A * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
2N/A * or http://www.opensolaris.org/os/licensing.
2N/A * See the License for the specific language governing permissions
2N/A * and limitations under the License.
2N/A *
2N/A * When distributing Covered Code, include this CDDL HEADER in each
2N/A * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
2N/A * If applicable, add the following below this CDDL HEADER, with the
2N/A * fields enclosed by brackets "[]" replaced with your own identifying
2N/A * information: Portions Copyright [yyyy] [name of copyright owner]
2N/A *
2N/A * CDDL HEADER END
2N/A */
2N/A
2N/A/*
2N/A * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
2N/A * Use is subject to license terms.
2N/A */
2N/A
2N/A .file "lmul.s"
2N/A
2N/A/ Double long multiply routine.
2N/A
2N/A#include "SYS.h"
2N/A
2N/A .set lop,8
2N/A .set rop,16
2N/A .set ans,0
2N/A
2N/A ENTRY(lmul)
2N/A popl %eax
2N/A xchgl %eax,0(%esp)
2N/A
2N/A pushl %eax
2N/A
2N/A movl lop+4(%esp),%eax
2N/A mull rop(%esp) / high(lop) * low(rop)
2N/A movl %eax,%ecx / partial high(product)
2N/A
2N/A movl rop+4(%esp),%eax
2N/A mull lop(%esp) / high(rop) * low(lop)
2N/A addl %eax,%ecx / partial sum of high(product)
2N/A
2N/A movl rop(%esp),%eax
2N/A mull lop(%esp) / low(rop) * low(lop)
2N/A addl %edx,%ecx / final high(product)
2N/A
2N/A movl %eax,%edx
2N/A popl %eax
2N/A movl %edx,ans(%eax)
2N/A movl %ecx,ans+4(%eax)
2N/A
2N/A ret
2N/A SET_SIZE(lmul)