tlb.hh revision 5891:73084c6bb183
112855Sgabeblack@google.com/* 212855Sgabeblack@google.com * Copyright (c) 2007 The Hewlett-Packard Development Company 312855Sgabeblack@google.com * All rights reserved. 412855Sgabeblack@google.com * 512855Sgabeblack@google.com * Redistribution and use of this software in source and binary forms, 612855Sgabeblack@google.com * with or without modification, are permitted provided that the 712855Sgabeblack@google.com * following conditions are met: 812855Sgabeblack@google.com * 912855Sgabeblack@google.com * The software must be used only for Non-Commercial Use which means any 1012855Sgabeblack@google.com * use which is NOT directed to receiving any direct monetary 1112855Sgabeblack@google.com * compensation for, or commercial advantage from such use. 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IN NO EVENT SHALL THE COPYRIGHT 4712855Sgabeblack@google.com * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 4812855Sgabeblack@google.com * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 4912855Sgabeblack@google.com * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 5012855Sgabeblack@google.com * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 5112855Sgabeblack@google.com * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 5212855Sgabeblack@google.com * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 5312855Sgabeblack@google.com * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 5412855Sgabeblack@google.com * 5512855Sgabeblack@google.com * Authors: Gabe Black 5612855Sgabeblack@google.com */ 5712855Sgabeblack@google.com 5812855Sgabeblack@google.com#ifndef __ARCH_X86_TLB_HH__ 5912855Sgabeblack@google.com#define __ARCH_X86_TLB_HH__ 6012855Sgabeblack@google.com 6112855Sgabeblack@google.com#include <list> 6212855Sgabeblack@google.com#include <vector> 6312855Sgabeblack@google.com#include <string> 6412855Sgabeblack@google.com 6512855Sgabeblack@google.com#include "arch/x86/pagetable.hh" 6612855Sgabeblack@google.com#include "arch/x86/segmentregs.hh" 6712855Sgabeblack@google.com#include "config/full_system.hh" 6812855Sgabeblack@google.com#include "mem/mem_object.hh" 6912855Sgabeblack@google.com#include "mem/request.hh" 7012855Sgabeblack@google.com#include "params/X86DTB.hh" 7112855Sgabeblack@google.com#include "params/X86ITB.hh" 7212855Sgabeblack@google.com#include "sim/faults.hh" 7312855Sgabeblack@google.com#include "sim/tlb.hh" 7412855Sgabeblack@google.com#include "sim/sim_object.hh" 7512855Sgabeblack@google.com 7612855Sgabeblack@google.comclass ThreadContext; 7712855Sgabeblack@google.comclass Packet; 7812855Sgabeblack@google.com 7912855Sgabeblack@google.comnamespace X86ISA 8012855Sgabeblack@google.com{ 8112855Sgabeblack@google.com class Walker; 8212855Sgabeblack@google.com 8312855Sgabeblack@google.com static const unsigned StoreCheck = 1 << NUM_SEGMENTREGS; 8412855Sgabeblack@google.com 8512855Sgabeblack@google.com class TLB; 8612855Sgabeblack@google.com 8712855Sgabeblack@google.com class TLB : public BaseTLB 8812855Sgabeblack@google.com { 8912855Sgabeblack@google.com protected: 9012855Sgabeblack@google.com friend class FakeITLBFault; 9112855Sgabeblack@google.com friend class FakeDTLBFault; 9212855Sgabeblack@google.com 9312855Sgabeblack@google.com typedef std::list<TlbEntry *> EntryList; 9412855Sgabeblack@google.com 9512855Sgabeblack@google.com bool _allowNX; 9612855Sgabeblack@google.com uint32_t configAddress; 9712855Sgabeblack@google.com 9812855Sgabeblack@google.com public: 9912855Sgabeblack@google.com bool allowNX() const 10012855Sgabeblack@google.com { 10112855Sgabeblack@google.com return _allowNX; 10212855Sgabeblack@google.com } 10312855Sgabeblack@google.com 10412855Sgabeblack@google.com typedef X86TLBParams Params; 10512855Sgabeblack@google.com TLB(const Params *p); 10612855Sgabeblack@google.com 10712855Sgabeblack@google.com void dumpAll(); 10812855Sgabeblack@google.com 10912855Sgabeblack@google.com TlbEntry *lookup(Addr va, bool update_lru = true); 11012855Sgabeblack@google.com 11112855Sgabeblack@google.com void setConfigAddress(uint32_t addr); 11212855Sgabeblack@google.com 11312855Sgabeblack@google.com protected: 11412855Sgabeblack@google.com 11512855Sgabeblack@google.com EntryList::iterator lookupIt(Addr va, bool update_lru = true); 11612855Sgabeblack@google.com 11712855Sgabeblack@google.com#if FULL_SYSTEM 11812855Sgabeblack@google.com protected: 11912855Sgabeblack@google.com 12012855Sgabeblack@google.com Walker * walker; 12112855Sgabeblack@google.com 12212855Sgabeblack@google.com void walk(ThreadContext * _tc, Addr vaddr, bool write, bool execute); 12312855Sgabeblack@google.com#endif 12412855Sgabeblack@google.com 12512855Sgabeblack@google.com public: 12612855Sgabeblack@google.com void invalidateAll(); 12712855Sgabeblack@google.com 12812855Sgabeblack@google.com void invalidateNonGlobal(); 12912855Sgabeblack@google.com 13012855Sgabeblack@google.com void demapPage(Addr va, uint64_t asn); 13112855Sgabeblack@google.com 13212855Sgabeblack@google.com protected: 13312855Sgabeblack@google.com int size; 13412855Sgabeblack@google.com 13512855Sgabeblack@google.com TlbEntry * tlb; 13612855Sgabeblack@google.com 13712855Sgabeblack@google.com EntryList freeList; 13812855Sgabeblack@google.com EntryList entryList; 13912855Sgabeblack@google.com 14012855Sgabeblack@google.com template<class TlbFault> 14112855Sgabeblack@google.com Fault translateAtomic(RequestPtr &req, ThreadContext *tc, 14212855Sgabeblack@google.com bool write, bool execute); 143 144 public: 145 146 void insert(Addr vpn, TlbEntry &entry); 147 148 // Checkpointing 149 virtual void serialize(std::ostream &os); 150 virtual void unserialize(Checkpoint *cp, const std::string §ion); 151 }; 152 153 class ITB : public TLB 154 { 155 public: 156 typedef X86ITBParams Params; 157 ITB(const Params *p) : TLB(p) 158 { 159 _allowNX = false; 160 } 161 162 Fault translateAtomic(RequestPtr &req, ThreadContext *tc); 163 164 friend class DTB; 165 }; 166 167 class DTB : public TLB 168 { 169 public: 170 typedef X86DTBParams Params; 171 DTB(const Params *p) : TLB(p) 172 { 173 _allowNX = true; 174 } 175 Fault translateAtomic(RequestPtr &req, ThreadContext *tc, bool write); 176#if FULL_SYSTEM 177 Tick doMmuRegRead(ThreadContext *tc, Packet *pkt); 178 Tick doMmuRegWrite(ThreadContext *tc, Packet *pkt); 179#endif 180 181 // Checkpointing 182 virtual void serialize(std::ostream &os); 183 virtual void unserialize(Checkpoint *cp, const std::string §ion); 184 }; 185} 186 187#endif // __ARCH_X86_TLB_HH__ 188