1*2fe8fb19SBen Gras/* $NetBSD: bzero.S,v 1.3 2003/08/07 16:42:32 agc Exp $ */ 2*2fe8fb19SBen Gras/* 3*2fe8fb19SBen Gras * Copyright (c) 1983, 1993 4*2fe8fb19SBen Gras * The Regents of the University of California. All rights reserved. 5*2fe8fb19SBen Gras * 6*2fe8fb19SBen Gras * Redistribution and use in source and binary forms, with or without 7*2fe8fb19SBen Gras * modification, are permitted provided that the following conditions 8*2fe8fb19SBen Gras * are met: 9*2fe8fb19SBen Gras * 1. Redistributions of source code must retain the above copyright 10*2fe8fb19SBen Gras * notice, this list of conditions and the following disclaimer. 11*2fe8fb19SBen Gras * 2. Redistributions in binary form must reproduce the above copyright 12*2fe8fb19SBen Gras * notice, this list of conditions and the following disclaimer in the 13*2fe8fb19SBen Gras * documentation and/or other materials provided with the distribution. 14*2fe8fb19SBen Gras * 3. Neither the name of the University nor the names of its contributors 15*2fe8fb19SBen Gras * may be used to endorse or promote products derived from this software 16*2fe8fb19SBen Gras * without specific prior written permission. 17*2fe8fb19SBen Gras * 18*2fe8fb19SBen Gras * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 19*2fe8fb19SBen Gras * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20*2fe8fb19SBen Gras * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21*2fe8fb19SBen Gras * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 22*2fe8fb19SBen Gras * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23*2fe8fb19SBen Gras * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24*2fe8fb19SBen Gras * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25*2fe8fb19SBen Gras * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26*2fe8fb19SBen Gras * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27*2fe8fb19SBen Gras * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28*2fe8fb19SBen Gras * SUCH DAMAGE. 29*2fe8fb19SBen Gras */ 30*2fe8fb19SBen Gras 31*2fe8fb19SBen Gras#if defined(LIBC_SCCS) && !defined(lint) 32*2fe8fb19SBen Gras .asciz "@(#)bzero.s 8.1 (Berkeley) 6/4/93" 33*2fe8fb19SBen Gras#endif /* LIBC_SCCS and not lint */ 34*2fe8fb19SBen Gras 35*2fe8fb19SBen Gras/* bzero(base, length) */ 36*2fe8fb19SBen Gras 37*2fe8fb19SBen Gras#include "DEFS.h" 38*2fe8fb19SBen Gras 39*2fe8fb19SBen GrasENTRY(bzero, 0) 40*2fe8fb19SBen Gras movl 4(%ap),%r3 41*2fe8fb19SBen Gras jbr 2f 42*2fe8fb19SBen Gras1: 43*2fe8fb19SBen Gras subl2 %r0,8(%ap) 44*2fe8fb19SBen Gras movc5 $0,(%r3),$0,%r0,(%r3) 45*2fe8fb19SBen Gras2: 46*2fe8fb19SBen Gras movzwl $65535,%r0 47*2fe8fb19SBen Gras cmpl 8(%ap),%r0 48*2fe8fb19SBen Gras jgtr 1b 49*2fe8fb19SBen Gras movc5 $0,(%r3),$0,8(%ap),(%r3) 50*2fe8fb19SBen Gras ret 51