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/* $OpenBSD: cache_s.s,v 1.1 1998/06/23 18:46:42 mickey Exp $ */
/* $NOWHERE: cache_s.s,v 2.1 1998/06/22 19:34:46 mickey Exp $ */
/*
* Copyright 1996 1995 by Open Software Foundation, Inc.
* All Rights Reserved
*
* Permission to use, copy, modify, and distribute this software and
* its documentation for any purpose and without fee is hereby granted,
* provided that the above copyright notice appears in all copies and
* that both the copyright notice and this permission notice appear in
* supporting documentation.
*
* OSF DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE.
*
* IN NO EVENT SHALL OSF BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
* NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
*/
/*
* pmk1.1
*/
/*
* (c) Copyright 1988 HEWLETT-PACKARD COMPANY
*
* To anyone who acknowledges that this file is provided "AS IS"
* without any express or implied warranty:
* permission to use, copy, modify, and distribute this file
* for any purpose is hereby granted without fee, provided that
* the above copyright notice and this notice appears in all
* copies, and that the name of Hewlett-Packard Company not be
* used in advertising or publicity pertaining to distribution
* of the software without specific, written prior permission.
* Hewlett-Packard Company makes no representations about the
* suitability of this software for any purpose.
*/
/*
* HISTORY
* $Log: cache_s.s,v $
* Revision 1.1 1998/06/23 18:46:42 mickey
* Initial revision
*
* Revision 2.1 1998/06/22 19:34:46 mickey
* add cache manipulating routines
*
* Revision 1.1.2.1 1996/08/19 07:47:16 bruel
* First revision
* [1996/08/02 09:17:26 bruel]
*
* Revision 1.1.1.2 1996/08/02 09:17:26 bruel
* First revision
*
* Revision 1.1.2.2 91/11/20 16:21:39 sharpe
* Initial version from DSEE
* [91/11/20 16:08:35 sharpe]
*
*/
/*
* FlushDCache(start,size)
* Stolen from pmap_fdcache.
* void FlushDCache(space, start, end) - Flush the data cache.
*
* This routine flushes the given range of virtual addresses, from start (inclusive)
* to end (exclusive) from the data cache.
*
*/
.space $TEXT$
.subspa $CODE$
.export FlushDCache,entry
.proc
.callinfo
FlushDCache
.entry
comb,= %arg1,%r0,FDCdone /* If len=0, then done */
ldi 0x10,%r21
ldi 0x0f,%r22
add %arg0,%arg1,%r20
andcm %arg0,%r22,%arg0 /* Truncate lower bound to stridesize boundary */
sub %r20,%arg0,%arg1
ldi 0xff,%r22
add %arg1,%r22,%arg1
andcm %arg1,%r22,%arg1
add %arg0,%arg1,%r20 /* Round up upper bound */
fdc,m %r21(%arg0)
FDCloop
fdc,m %r21(%arg0) /* Flush block */
fdc,m %r21(%arg0)
fdc,m %r21(%arg0)
fdc,m %r21(%arg0)
fdc,m %r21(%arg0)
fdc,m %r21(%arg0)
fdc,m %r21(%arg0)
fdc,m %r21(%arg0)
fdc,m %r21(%arg0)
fdc,m %r21(%arg0)
fdc,m %r21(%arg0)
fdc,m %r21(%arg0)
fdc,m %r21(%arg0)
fdc,m %r21(%arg0)
fdc,m %r21(%arg0)
comb,<<,n %arg0,%r20,FDCloop /* Continue until fstart = fend */
fdc,m %r21(%arg0)
FDCdone
bv 0(%rp) /* return */
nop
.exit
.procend
.export FlushICache,entry
.proc
.callinfo
FlushICache
.entry
comb,= %arg1,%r0,PICdone /* If len=0, then done */
ldi 0x10,%r21
ldi 0x0f,%r22
add %arg0,%arg1,%r20
andcm %arg0,%r22,%arg0 /* Truncate lower bound to stridesize boundary */
sub %r20,%arg0,%arg1
ldi 0xff,%r22
add %arg1,%r22,%arg1
andcm %arg1,%r22,%arg1
add %arg0,%arg1,%r20 /* Round up upper bound */
fic,m %r21(%arg0)
PICloop
fic,m %r21(%arg0) /* Flush block */
fic,m %r21(%arg0)
fic,m %r21(%arg0)
fic,m %r21(%arg0)
fic,m %r21(%arg0)
fic,m %r21(%arg0)
fic,m %r21(%arg0)
fic,m %r21(%arg0)
fic,m %r21(%arg0)
fic,m %r21(%arg0)
fic,m %r21(%arg0)
fic,m %r21(%arg0)
fic,m %r21(%arg0)
fic,m %r21(%arg0)
fic,m %r21(%arg0)
comb,<<,n %arg0,%r20,PICloop /* Continue until fstart = fend */
fic,m %r21(%arg0)
PICdone
bv 0(%rp) /* return */
nop
.exit
.procend
/*
* void sync_caches - Synchronize the cache.
*
* This routine executes a sync instruction and executes 7 nops.
* Intended to be used with kdb when setting breakpoints.
* Stolen from pmap_as.s.
*/
.export sync_caches,entry
.proc
.callinfo
sync_caches
.entry
sync /* Sync access */
nop /* voodoo */
nop
nop
nop
nop
nop
bv 0(%rp)
nop
.exit
.procend
/*
* void fdce(space, offset) - Perform fdce operation.
*
* This routine is called by pmap_fcacheall to whack the data cache. Must
* be only used inside an architectured loop.
*/
.export fdce,entry
.proc
.callinfo
fdce
.entry
fdce 0(0,%arg1) /* Space does not make a difference */
sync
bv 0(%rp)
nop
.exit
.procend
/*
* void fice(space, offset) - Perform fice operation.
*
* This routine is called by pmap_fcacheall to whack the instruction cache.
* Must be only used inside an architectured loop
*/
.export fice,entry
.proc
.callinfo
fice
.entry
fice 0(0,%arg1) /* Space does not make a difference */
sync
bv 0(%rp)
.exit
.procend
.end
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