1/* $NetBSD: bcmp.S,v 1.1 2002/06/06 20:31:22 fredette Exp $ */ 2 3/* $OpenBSD: bcmp.S,v 1.3 2001/06/04 23:14:02 mickey Exp $ */ 4 5/* 6 * Copyright 1996 1995 by Open Software Foundation, Inc. 7 * All Rights Reserved 8 * 9 * Permission to use, copy, modify, and distribute this software and 10 * its documentation for any purpose and without fee is hereby granted, 11 * provided that the above copyright notice appears in all copies and 12 * that both the copyright notice and this permission notice appear in 13 * supporting documentation. 14 * 15 * OSF DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE 16 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 17 * FOR A PARTICULAR PURPOSE. 18 * 19 * IN NO EVENT SHALL OSF BE LIABLE FOR ANY SPECIAL, INDIRECT, OR 20 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM 21 * LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT, 22 * NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION 23 * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 24 */ 25/* 26 * (c) Copyright 1988 HEWLETT-PACKARD COMPANY 27 * 28 * To anyone who acknowledges that this file is provided "AS IS" 29 * without any express or implied warranty: 30 * permission to use, copy, modify, and distribute this file 31 * for any purpose is hereby granted without fee, provided that 32 * the above copyright notice and this notice appears in all 33 * copies, and that the name of Hewlett-Packard Company not be 34 * used in advertising or publicity pertaining to distribution 35 * of the software without specific, written prior permission. 36 * Hewlett-Packard Company makes no representations about the 37 * suitability of this software for any purpose. 38 */ 39/* 40 * Copyright (c) 1990,1991,1994 The University of Utah and 41 * the Computer Systems Laboratory (CSL). All rights reserved. 42 * 43 * THE UNIVERSITY OF UTAH AND CSL PROVIDE THIS SOFTWARE IN ITS "AS IS" 44 * CONDITION, AND DISCLAIM ANY LIABILITY OF ANY KIND FOR ANY DAMAGES 45 * WHATSOEVER RESULTING FROM ITS USE. 46 * 47 * CSL requests users of this software to return to csl-dist@cs.utah.edu any 48 * improvements that they make and grant CSL redistribution rights. 49 * 50 * Utah Hdr: movc.s 1.26 94/12/14 51 */ 52 53#include <machine/asm.h> 54 55#ifdef SYSLIBC_SCCS 56 .text 57 .asciz "$OpenBSD: bcmp.S,v 1.3 2001/06/04 23:14:02 mickey Exp $" 58 .align 4 59#endif 60 61/* 62 * int 63 * bcmp(src, dst, count) 64 * vm_offset_t src; 65 * vm_offset_t dst; 66 * int count; 67 */ 68LEAF_ENTRY(bcmp) 69 comb,>= r0,arg2,$bcmp_exit 70 copy t1,t2 71 72$bcmp_loop 73 ldbs,ma 1(arg0),t1 74 ldbs,ma 1(arg1),t2 75 comb,<>,n t1,t2,$bcmp_exit 76 addib,<> -1,arg2,$bcmp_loop 77 nop 78 79$bcmp_exit 80 bv 0(r2) 81 sub t1,t2,ret0 82 83EXIT(bcmp) 84 85