Aren/NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

asm bcopy() for sh3

Browse Source
This commit is contained in:
msaitoh 2000-04-20 13:52:35 +00:00
parent dc6a892a44
commit 48c1343230
4 changed files with 97 additions and 1 deletions
sys/lib/libkern/arch/sh3
Makefile.incbcopy.Smemcpy.Smemmove.S

3
sys/lib/libkern/arch/sh3/Makefile.inc

@ -1,8 +1,9 @@
# $NetBSD: Makefile.inc,v 1.2 1999/10/21 15:05:08 msaitoh Exp $
# $NetBSD: Makefile.inc,v 1.3 2000/04/20 13:52:35 msaitoh Exp $
SRCS+= __main.c imax.c imin.c lmax.c lmin.c max.c min.c ulmax.c ulmin.c \
bswap64.c bcmp.c bzero.c ffs.c scanc.c skpc.c \
strcat.c strcmp.c strcpy.c strlen.c strncasecmp.c strncmp.c \
strncpy.c random.c __assert.c memchr.c memcmp.c memset.c \
bcopy.S memcpy.S memmove.S \
ashiftrt.S ashlsi3.S ashrsi3.S lshrsi3.S movstr.S \
mulsi3.S sdivsi3.S udivsi3.S

87
sys/lib/libkern/arch/sh3/bcopy.S Normal file

@ -0,0 +1,87 @@
/* $NetBSD: bcopy.S,v 1.1 2000/04/20 13:52:35 msaitoh Exp $ */
/*
* Copyright (c) 2000 SHIMIZU Ryo <ryo@misakimix.org>
* 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. 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.
*/
#include <machine/asm.h>
#if defined(MEMCOPY) || defined(MEMMOVE)
#define DST r4
#define SRC r5
#else
#define SRC r4
#define DST r5
#endif
#define LEN r6
#ifdef MEMCOPY
ENTRY(memcpy)
#else
#ifdef MEMMOVE
ENTRY(memmove)
#else
ENTRY(bcopy)
#endif
#endif
cmp/hi DST,SRC
bf bcopy_overlap
tst LEN,LEN
bt 9f
1:
mov.b @SRC+,r0
mov.b r0,@DST
add #-1,LEN
tst LEN,LEN
bf/s 1b
add #1,DST
9:
rts
nop
bcopy_overlap:
add LEN,SRC
add LEN,DST
tst LEN,LEN
bt 9f
1:
add #-1,SRC
mov.b @SRC,r0
add #-1,LEN
tst LEN,LEN
bf/s 1b
mov.b r0,@-DST
9:
rts
nop

4
sys/lib/libkern/arch/sh3/memcpy.S Normal file

@ -0,0 +1,4 @@
/* $NetBSD: memcpy.S,v 1.1 2000/04/20 13:52:36 msaitoh Exp $ */
#define MEMCOPY
#include "bcopy.S"

4
sys/lib/libkern/arch/sh3/memmove.S Normal file

@ -0,0 +1,4 @@
/* $NetBSD: memmove.S,v 1.1 2000/04/20 13:52:36 msaitoh Exp $ */
#define MEMMOVE
#include "bcopy.S"