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/* $OpenBSD: bcopy.s,v 1.1 1997/01/16 09:26:29 niklas Exp $ */
/*
* Copyright (c) 1996 Ignatios Souvatzis
* All rights reserved.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Ignatios Souvatzis
* for the NetBSD project.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
.text
.even
.globl _bcopy,_memcpy
_memcpy:
movel sp@(4),a0
movel sp@(8),a1
jra Lcpy
_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
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