tlb.cc revision 5086:e7913ffb379d
1/* 2 * Copyright (c) 2007 The Hewlett-Packard Development Company 3 * All rights reserved. 4 * 5 * Redistribution and use of this software in source and binary forms, 6 * with or without modification, are permitted provided that the 7 * following conditions are met: 8 * 9 * The software must be used only for Non-Commercial Use which means any 10 * use which is NOT directed to receiving any direct monetary 11 * compensation for, or commercial advantage from such use. Illustrative 12 * examples of non-commercial use are academic research, personal study, 13 * teaching, education and corporate research & development. 14 * Illustrative examples of commercial use are distributing products for 15 * commercial advantage and providing services using the software for 16 * commercial advantage. 17 * 18 * If you wish to use this software or functionality therein that may be 19 * covered by patents for commercial use, please contact: 20 * Director of Intellectual Property Licensing 21 * Office of Strategy and Technology 22 * Hewlett-Packard Company 23 * 1501 Page Mill Road 24 * Palo Alto, California 94304 25 * 26 * Redistributions of source code must retain the above copyright notice, 27 * this list of conditions and the following disclaimer. Redistributions 28 * in binary form must reproduce the above copyright notice, this list of 29 * conditions and the following disclaimer in the documentation and/or 30 * other materials provided with the distribution. Neither the name of 31 * the COPYRIGHT HOLDER(s), HEWLETT-PACKARD COMPANY, nor the names of its 32 * contributors may be used to endorse or promote products derived from 33 * this software without specific prior written permission. No right of 34 * sublicense is granted herewith. Derivatives of the software and 35 * output created using the software may be prepared, but only for 36 * Non-Commercial Uses. Derivatives of the software may be shared with 37 * others provided: (i) the others agree to abide by the list of 38 * conditions herein which includes the Non-Commercial Use restrictions; 39 * and (ii) such Derivatives of the software include the above copyright 40 * notice to acknowledge the contribution from this software where 41 * applicable, this list of conditions and the disclaimer below. 42 * 43 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 44 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 45 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 46 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 47 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 48 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 49 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 50 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 51 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 52 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 53 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 54 * 55 * Authors: Gabe Black 56 */ 57 58#include <cstring> 59 60#include "config/full_system.hh" 61 62#if FULL_SYSTEM 63 64#include "arch/x86/tlb.hh" 65#include "base/bitfield.hh" 66#include "base/trace.hh" 67#include "cpu/thread_context.hh" 68#include "cpu/base.hh" 69#include "mem/packet_access.hh" 70#include "mem/request.hh" 71#include "sim/system.hh" 72 73namespace X86ISA { 74 75TLB::TLB(const Params *p) : SimObject(p) 76{ 77} 78 79Fault 80ITB::translate(RequestPtr &req, ThreadContext *tc) 81{ 82 return NoFault; 83} 84 85 86 87Fault 88DTB::translate(RequestPtr &req, ThreadContext *tc, bool write) 89{ 90 return NoFault; 91}; 92 93#if FULL_SYSTEM 94 95Tick 96DTB::doMmuRegRead(ThreadContext *tc, Packet *pkt) 97{ 98 return tc->getCpuPtr()->cycles(1); 99} 100 101Tick 102DTB::doMmuRegWrite(ThreadContext *tc, Packet *pkt) 103{ 104 return tc->getCpuPtr()->cycles(1); 105} 106 107#endif 108 109void 110TLB::serialize(std::ostream &os) 111{ 112} 113 114void 115TLB::unserialize(Checkpoint *cp, const std::string §ion) 116{ 117} 118 119void 120DTB::serialize(std::ostream &os) 121{ 122 TLB::serialize(os); 123} 124 125void 126DTB::unserialize(Checkpoint *cp, const std::string §ion) 127{ 128 TLB::unserialize(cp, section); 129} 130 131/* end namespace X86ISA */ } 132 133#else 134 135#include <cstring> 136 137#include "arch/x86/tlb.hh" 138#include "params/X86DTB.hh" 139#include "params/X86ITB.hh" 140#include "sim/serialize.hh" 141 142namespace X86ISA { 143 void 144 TlbEntry::serialize(std::ostream &os) 145 { 146 SERIALIZE_SCALAR(pageStart); 147 } 148 149 void 150 TlbEntry::unserialize(Checkpoint *cp, const std::string §ion) 151 { 152 UNSERIALIZE_SCALAR(pageStart); 153 } 154}; 155 156#endif 157 158X86ISA::ITB * 159X86ITBParams::create() 160{ 161 return new X86ISA::ITB(this); 162} 163 164X86ISA::DTB * 165X86DTBParams::create() 166{ 167 return new X86ISA::DTB(this); 168} 169