/*      $NetBSD: bcopy.s,v 1.9 2008/04/28 20:23:13 martin Exp $ */

/*-
* Copyright (c) 1996 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Ignatios Souvatzis.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/

/*
* Small but possibly slow bcopy/memcpy combo.
*/

#include <machine/asm.h>

       .text
       .even

ENTRY_NOPROFILE(memmove)
ENTRY_NOPROFILE(memcpy)
       movel %sp@(4),%a0
       movel %sp@(8),%a1
       jra Lcpy

ENTRY_NOPROFILE(bcopy)
       movel %sp@(4),%a1
       movel %sp@(8),%a0
Lcpy:
       movel %sp@(12),%d0
       jeq L1
       cmpl %a1,%a0
       jcc L3
L4:
       moveb %a1@+,%a0@+
       subql #1,%d0
       jne L4
       rts
L3:
       addl %d0,%a1
       addl %d0,%a0
L9:
       moveb %a1@-,%a0@-
       subql #1,%d0
       jne L9
L1:
       rts