17c478bd9Sstevel@tonic-gate/* 27c478bd9Sstevel@tonic-gate * CDDL HEADER START 37c478bd9Sstevel@tonic-gate * 47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 57257d1b4Sraf * Common Development and Distribution License (the "License"). 67257d1b4Sraf * You may not use this file except in compliance with the License. 77c478bd9Sstevel@tonic-gate * 87c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 97c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 107c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 117c478bd9Sstevel@tonic-gate * and limitations under the License. 127c478bd9Sstevel@tonic-gate * 137c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 147c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 157c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 167c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 177c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 187c478bd9Sstevel@tonic-gate * 197c478bd9Sstevel@tonic-gate * CDDL HEADER END 207c478bd9Sstevel@tonic-gate */ 217257d1b4Sraf 227c478bd9Sstevel@tonic-gate/* 237257d1b4Sraf * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 247c478bd9Sstevel@tonic-gate * Use is subject to license terms. 257c478bd9Sstevel@tonic-gate */ 267c478bd9Sstevel@tonic-gate 27*9a70fc3bSMark J. Nelson .file "lshiftl.s" 287c478bd9Sstevel@tonic-gate 297c478bd9Sstevel@tonic-gate/ Shift a double long value. 307c478bd9Sstevel@tonic-gate 317c478bd9Sstevel@tonic-gate#include "SYS.h" 327c478bd9Sstevel@tonic-gate 337c478bd9Sstevel@tonic-gate .set arg,8 347c478bd9Sstevel@tonic-gate .set cnt,16 357c478bd9Sstevel@tonic-gate .set ans,0 367c478bd9Sstevel@tonic-gate 377c478bd9Sstevel@tonic-gate ENTRY(lshiftl) 387c478bd9Sstevel@tonic-gate popl %eax 397c478bd9Sstevel@tonic-gate xchgl %eax,0(%esp) 407c478bd9Sstevel@tonic-gate 417c478bd9Sstevel@tonic-gate pushl %eax 427c478bd9Sstevel@tonic-gate movl arg(%esp),%eax 437c478bd9Sstevel@tonic-gate movl arg+4(%esp),%edx 447c478bd9Sstevel@tonic-gate movl cnt(%esp),%ecx 457c478bd9Sstevel@tonic-gate orl %ecx,%ecx 467c478bd9Sstevel@tonic-gate jz .lshiftld 477c478bd9Sstevel@tonic-gate jns .lshiftlp 487c478bd9Sstevel@tonic-gate 497c478bd9Sstevel@tonic-gate/ We are doing a negative (right) shift 507c478bd9Sstevel@tonic-gate 517c478bd9Sstevel@tonic-gate negl %ecx 527c478bd9Sstevel@tonic-gate 537c478bd9Sstevel@tonic-gate.lshiftln: 547c478bd9Sstevel@tonic-gate sarl $1,%edx 557c478bd9Sstevel@tonic-gate rcrl $1,%eax 567c478bd9Sstevel@tonic-gate loop .lshiftln 577c478bd9Sstevel@tonic-gate jmp .lshiftld 587c478bd9Sstevel@tonic-gate 597c478bd9Sstevel@tonic-gate/ We are doing a positive (left) shift 607c478bd9Sstevel@tonic-gate 617c478bd9Sstevel@tonic-gate.lshiftlp: 627c478bd9Sstevel@tonic-gate shll $1,%eax 637c478bd9Sstevel@tonic-gate rcll $1,%edx 647c478bd9Sstevel@tonic-gate loop .lshiftlp 657c478bd9Sstevel@tonic-gate 667c478bd9Sstevel@tonic-gate/ We are done. 677c478bd9Sstevel@tonic-gate 687c478bd9Sstevel@tonic-gate.lshiftld: 697c478bd9Sstevel@tonic-gate movl %eax,%ecx 707c478bd9Sstevel@tonic-gate popl %eax 717c478bd9Sstevel@tonic-gate movl %ecx,ans(%eax) 727c478bd9Sstevel@tonic-gate movl %edx,ans+4(%eax) 737c478bd9Sstevel@tonic-gate 747c478bd9Sstevel@tonic-gate ret 757c478bd9Sstevel@tonic-gate SET_SIZE(lshiftl) 76