lshrdi3.S revision 1.1
11.1Sjtc/* $NetBSD: lshrdi3.S,v 1.1 1996/05/31 02:05:47 jtc Exp $ */ 21.1Sjtc 31.1Sjtc/*- 41.1Sjtc * Copyright (c) 1996 The NetBSD Foundation, Inc. 51.1Sjtc * All rights reserved. 61.1Sjtc * 71.1Sjtc * This code is derived from software contributed to The NetBSD Foundation 81.1Sjtc * by J.T. Conklin. 91.1Sjtc * 101.1Sjtc * Redistribution and use in source and binary forms, with or without 111.1Sjtc * modification, are permitted provided that the following conditions 121.1Sjtc * are met: 131.1Sjtc * 1. Redistributions of source code must retain the above copyright 141.1Sjtc * notice, this list of conditions and the following disclaimer. 151.1Sjtc * 2. Redistributions in binary form must reproduce the above copyright 161.1Sjtc * notice, this list of conditions and the following disclaimer in the 171.1Sjtc * documentation and/or other materials provided with the distribution. 181.1Sjtc * 3. All advertising materials mentioning features or use of this software 191.1Sjtc * must display the following acknowledgement: 201.1Sjtc * This product includes software developed by the NetBSD 211.1Sjtc * Foundation, Inc. and its contributors. 221.1Sjtc * 4. Neither the name of The NetBSD Foundation nor the names of its 231.1Sjtc * contributors may be used to endorse or promote products derived 241.1Sjtc * from this software without specific prior written permission. 251.1Sjtc * 261.1Sjtc * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 271.1Sjtc * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 281.1Sjtc * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 291.1Sjtc * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE 301.1Sjtc * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 311.1Sjtc * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 321.1Sjtc * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 331.1Sjtc * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 341.1Sjtc * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 351.1Sjtc * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 361.1Sjtc * POSSIBILITY OF SUCH DAMAGE. 371.1Sjtc */ 381.1Sjtc 391.1Sjtc#include <machine/asm.h> 401.1Sjtc 411.1Sjtc| d0 msw 421.1Sjtc| d1 lsw 431.1Sjtc| d2 shift 441.1Sjtc| d3 offset (32 - shift) 451.1Sjtc 461.1SjtcENTRY(__lshrdi3) 471.1Sjtc link a6,#0 481.1Sjtc moveml d2-d4,sp@- 491.1Sjtc movel a6@(8),d0 501.1Sjtc movel a6@(12),d1 511.1Sjtc movel a6@(16),d2 521.1Sjtc moveq #32,d3 531.1Sjtc subl d2,d3 541.1Sjtc jgt L2 551.1Sjtc negl d3 561.1Sjtc movel d0,d1 571.1Sjtc lsrl d3,d1 581.1Sjtc clrl d0 591.1Sjtc jra L3 601.1SjtcL2: lsrl d2,d1 611.1Sjtc movel d0,d4 621.1Sjtc asll d3,d4 631.1Sjtc orl d4,d1 641.1Sjtc lsrl d2,d0 651.1SjtcL3: moveml a6@(-12),d2-d4 661.1Sjtc unlk a6 671.1Sjtc rts 68