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#pragma ident "%Z%%M% %I% %E% SMI" 28 29#include <sys/param.h> 30#include <sys/errno.h> 31#include <sys/asm_linkage.h> 32#include <sys/vtrace.h> 33#include <sys/machthread.h> 34#include <sys/clock.h> 35#include <sys/asi.h> 36#include <sys/fsr.h> 37#include <sys/privregs.h> 38#include <sys/pte.h> 39#include <sys/mmu.h> 40#include <sys/spitregs.h> 41 42#if defined(lint) 43 44#else /* lint */ 45#include "assym.h" 46#endif /* lint */ 47 48#define TT_HSM 0x99 49 50#if defined(lint) 51/* ARGSUSED */ 52void 53ac_blkcopy(caddr_t src, caddr_t dst, u_int linecount, u_int linesize) 54{} 55#else /* !lint */ 56! 57! Move a single cache line of data. Survive UE and CE on the read 58! 59! i0 = src va 60! i1 = dst va 61! i2 = line count 62! i3 = line size 63! i4 = cache of fpu state 64! 65 ENTRY(ac_blkcopy) 66 67 ! TODO: can we safely SAVE here 68 save %sp, -SA(MINFRAME + 2*64), %sp 69 70 ! XXX do we need to save the state of the fpu? 71 rd %fprs, %i4 72 btst (FPRS_DU|FPRS_DL|FPRS_FEF), %i4 73 74 ! always enable FPU 75 wr %g0, FPRS_FEF, %fprs 76 77 bz,a 1f 78 nop 79 80 ! save in-use fpregs on stack 81 membar #Sync 82 add %fp, STACK_BIAS - 81, %o2 83 and %o2, -64, %o2 84 stda %d0, [%o2]ASI_BLK_P 85 membar #Sync 86 871: 88 brz,pn %i2, 2f ! while (linecount) { 89 nop 90 ldda [%i0]ASI_BLK_P, %d0 ! *dst = *src; 91 membar #Sync 92 stda %d0, [%i1]ASI_BLK_COMMIT_P 93 membar #Sync 94 95 add %i0, %i3, %i0 ! dst++, src++; 96 add %i1, %i3, %i1 97 98 ba 1b ! linecount-- } 99 dec %i2 100 1012: 102 membar #Sync 103 104 ! restore fp to the way we got it 105 btst (FPRS_DU|FPRS_DL|FPRS_FEF), %i4 106 bz,a 3f 107 nop 108 109 ! restore fpregs from stack 110 add %fp, STACK_BIAS - 81, %o2 111 and %o2, -64, %o2 112 ldda [%o2]ASI_BLK_P, %d0 113 membar #Sync 114 1153: 116 wr %g0, %i4, %fprs ! fpu back to the way it was 117 ret 118 restore 119 SET_SIZE(ac_blkcopy) 120#endif /* lint */ 121