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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 1998 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#include <sys/param.h>
#include <sys/errno.h>
#include <sys/asm_linkage.h>
#include <sys/vtrace.h>
#include <sys/machthread.h>
#include <sys/clock.h>
#include <sys/asi.h>
#include <sys/fsr.h>
#include <sys/privregs.h>
#include <sys/pte.h>
#include <sys/mmu.h>
#include <sys/spitregs.h>
#include "assym.h"
#define TT_HSM 0x99
!
! Move a single cache line of data. Survive UE and CE on the read
!
! i0 = src va
! i1 = dst va
! i2 = line count
! i3 = line size
! i4 = cache of fpu state
!
ENTRY(ac_blkcopy)
! TODO: can we safely SAVE here
save %sp, -SA(MINFRAME + 2*64), %sp
! XXX do we need to save the state of the fpu?
rd %fprs, %i4
btst (FPRS_DU|FPRS_DL|FPRS_FEF), %i4
! always enable FPU
wr %g0, FPRS_FEF, %fprs
bz,a 1f
nop
! save in-use fpregs on stack
membar #Sync
add %fp, STACK_BIAS - 81, %o2
and %o2, -64, %o2
stda %d0, [%o2]ASI_BLK_P
membar #Sync
1:
brz,pn %i2, 2f ! while (linecount) {
nop
ldda [%i0]ASI_BLK_P, %d0 ! *dst = *src;
membar #Sync
stda %d0, [%i1]ASI_BLK_COMMIT_P
membar #Sync
add %i0, %i3, %i0 ! dst++, src++;
add %i1, %i3, %i1
ba 1b ! linecount-- }
dec %i2
2:
membar #Sync
! restore fp to the way we got it
btst (FPRS_DU|FPRS_DL|FPRS_FEF), %i4
bz,a 3f
nop
! restore fpregs from stack
add %fp, STACK_BIAS - 81, %o2
and %o2, -64, %o2
ldda [%o2]ASI_BLK_P, %d0
membar #Sync
3:
wr %g0, %i4, %fprs ! fpu back to the way it was
ret
restore
SET_SIZE(ac_blkcopy)
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