1*787e823fSmatt/* $NetBSD: bzero.S,v 1.4 2011/01/25 02:38:15 matt Exp $ */ 292a955a8Sragge/* 392a955a8Sragge * Copyright (c) 1983, 1993 492a955a8Sragge * The Regents of the University of California. All rights reserved. 592a955a8Sragge * 692a955a8Sragge * Redistribution and use in source and binary forms, with or without 792a955a8Sragge * modification, are permitted provided that the following conditions 892a955a8Sragge * are met: 992a955a8Sragge * 1. Redistributions of source code must retain the above copyright 1092a955a8Sragge * notice, this list of conditions and the following disclaimer. 1192a955a8Sragge * 2. Redistributions in binary form must reproduce the above copyright 1292a955a8Sragge * notice, this list of conditions and the following disclaimer in the 1392a955a8Sragge * documentation and/or other materials provided with the distribution. 14eb7c1594Sagc * 3. Neither the name of the University nor the names of its contributors 1592a955a8Sragge * may be used to endorse or promote products derived from this software 1692a955a8Sragge * without specific prior written permission. 1792a955a8Sragge * 1892a955a8Sragge * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 1992a955a8Sragge * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2092a955a8Sragge * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2192a955a8Sragge * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2292a955a8Sragge * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2392a955a8Sragge * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2492a955a8Sragge * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2592a955a8Sragge * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2692a955a8Sragge * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2792a955a8Sragge * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2892a955a8Sragge * SUCH DAMAGE. 2992a955a8Sragge */ 3092a955a8Sragge 31*787e823fSmatt#include "DEFS.h" 32*787e823fSmatt 33*787e823fSmatt#if defined(LIBC_SCCS) 34*787e823fSmatt /* .asciz "@(#)bzero.s 8.1 (Berkeley) 6/4/93" */ 35*787e823fSmattRCSID("$NetBSD: bzero.S,v 1.4 2011/01/25 02:38:15 matt Exp $") 36*787e823fSmatt#endif 3792a955a8Sragge 3892a955a8Sragge/* bzero(base, length) */ 3992a955a8Sragge 4092a955a8SraggeENTRY(bzero, 0) 410ce5ca14Smatt movl 4(%ap),%r3 4292a955a8Sragge jbr 2f 4392a955a8Sragge1: 440ce5ca14Smatt subl2 %r0,8(%ap) 450ce5ca14Smatt movc5 $0,(%r3),$0,%r0,(%r3) 4692a955a8Sragge2: 470ce5ca14Smatt movzwl $65535,%r0 480ce5ca14Smatt cmpl 8(%ap),%r0 4992a955a8Sragge jgtr 1b 500ce5ca14Smatt movc5 $0,(%r3),$0,8(%ap),(%r3) 5192a955a8Sragge ret 52*787e823fSmattEND(bzero) 53