1/* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22/* 23 * Copyright 1998 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27#include <sys/param.h> 28#include <sys/errno.h> 29#include <sys/asm_linkage.h> 30#include <sys/vtrace.h> 31#include <sys/machthread.h> 32#include <sys/clock.h> 33#include <sys/asi.h> 34#include <sys/fsr.h> 35#include <sys/privregs.h> 36#include <sys/pte.h> 37#include <sys/mmu.h> 38#include <sys/spitregs.h> 39 40#include "assym.h" 41 42#define TT_HSM 0x99 43 44! 45! Move a single cache line of data. Survive UE and CE on the read 46! 47! i0 = src va 48! i1 = dst va 49! i2 = line count 50! i3 = line size 51! i4 = cache of fpu state 52! 53 ENTRY(ac_blkcopy) 54 55 ! TODO: can we safely SAVE here 56 save %sp, -SA(MINFRAME + 2*64), %sp 57 58 ! XXX do we need to save the state of the fpu? 59 rd %fprs, %i4 60 btst (FPRS_DU|FPRS_DL|FPRS_FEF), %i4 61 62 ! always enable FPU 63 wr %g0, FPRS_FEF, %fprs 64 65 bz,a 1f 66 nop 67 68 ! save in-use fpregs on stack 69 membar #Sync 70 add %fp, STACK_BIAS - 81, %o2 71 and %o2, -64, %o2 72 stda %d0, [%o2]ASI_BLK_P 73 membar #Sync 74 751: 76 brz,pn %i2, 2f ! while (linecount) { 77 nop 78 ldda [%i0]ASI_BLK_P, %d0 ! *dst = *src; 79 membar #Sync 80 stda %d0, [%i1]ASI_BLK_COMMIT_P 81 membar #Sync 82 83 add %i0, %i3, %i0 ! dst++, src++; 84 add %i1, %i3, %i1 85 86 ba 1b ! linecount-- } 87 dec %i2 88 892: 90 membar #Sync 91 92 ! restore fp to the way we got it 93 btst (FPRS_DU|FPRS_DL|FPRS_FEF), %i4 94 bz,a 3f 95 nop 96 97 ! restore fpregs from stack 98 add %fp, STACK_BIAS - 81, %o2 99 and %o2, -64, %o2 100 ldda [%o2]ASI_BLK_P, %d0 101 membar #Sync 102 1033: 104 wr %g0, %i4, %fprs ! fpu back to the way it was 105 ret 106 restore 107 SET_SIZE(ac_blkcopy) 108