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/*
* Copyright (c) 2007 The Hewlett-Packard Development Company
* All rights reserved.
*
* Redistribution and use of this software in source and binary forms,
* with or without modification, are permitted provided that the
* following conditions are met:
*
* The software must be used only for Non-Commercial Use which means any
* use which is NOT directed to receiving any direct monetary
* compensation for, or commercial advantage from such use. Illustrative
* examples of non-commercial use are academic research, personal study,
* teaching, education and corporate research & development.
* Illustrative examples of commercial use are distributing products for
* commercial advantage and providing services using the software for
* commercial advantage.
*
* If you wish to use this software or functionality therein that may be
* covered by patents for commercial use, please contact:
* Director of Intellectual Property Licensing
* Office of Strategy and Technology
* Hewlett-Packard Company
* 1501 Page Mill Road
* Palo Alto, California 94304
*
* Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer. Redistributions
* in binary form must reproduce the above copyright notice, this list of
* conditions and the following disclaimer in the documentation and/or
* other materials provided with the distribution. Neither the name of
* the COPYRIGHT HOLDER(s), HEWLETT-PACKARD COMPANY, nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission. No right of
* sublicense is granted herewith. Derivatives of the software and
* output created using the software may be prepared, but only for
* Non-Commercial Uses. Derivatives of the software may be shared with
* others provided: (i) the others agree to abide by the list of
* conditions herein which includes the Non-Commercial Use restrictions;
* and (ii) such Derivatives of the software include the above copyright
* notice to acknowledge the contribution from this software where
* applicable, this list of conditions and the disclaimer below.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Authors: Gabe Black
*/
#ifndef __ARCH_X86_TLB_HH__
#define __ARCH_X86_TLB_HH__
#include <list>
#include <vector>
#include <string>
#include "arch/x86/pagetable.hh"
#include "arch/x86/segmentregs.hh"
#include "config/full_system.hh"
#include "mem/mem_object.hh"
#include "mem/request.hh"
#include "params/X86DTB.hh"
#include "params/X86ITB.hh"
#include "sim/faults.hh"
#include "sim/tlb.hh"
#include "sim/sim_object.hh"
class ThreadContext;
class Packet;
namespace X86ISA
{
class Walker;
static const unsigned StoreCheck = 1 << NUM_SEGMENTREGS;
class TLB;
class TLB : public BaseTLB
{
protected:
friend class FakeITLBFault;
friend class FakeDTLBFault;
typedef std::list<TlbEntry *> EntryList;
bool _allowNX;
uint32_t configAddress;
public:
bool allowNX() const
{
return _allowNX;
}
typedef X86TLBParams Params;
TLB(const Params *p);
void dumpAll();
TlbEntry *lookup(Addr va, bool update_lru = true);
void setConfigAddress(uint32_t addr);
protected:
EntryList::iterator lookupIt(Addr va, bool update_lru = true);
#if FULL_SYSTEM
protected:
Walker * walker;
void walk(ThreadContext * _tc, Addr vaddr, bool write, bool execute);
#endif
public:
void invalidateAll();
void invalidateNonGlobal();
void demapPage(Addr va, uint64_t asn);
protected:
int size;
TlbEntry * tlb;
EntryList freeList;
EntryList entryList;
template<class TlbFault>
Fault translate(RequestPtr &req, ThreadContext *tc,
bool write, bool execute);
public:
void insert(Addr vpn, TlbEntry &entry);
// Checkpointing
virtual void serialize(std::ostream &os);
virtual void unserialize(Checkpoint *cp, const std::string §ion);
};
class ITB : public TLB
{
public:
typedef X86ITBParams Params;
ITB(const Params *p) : TLB(p)
{
_allowNX = false;
}
Fault translate(RequestPtr &req, ThreadContext *tc);
friend class DTB;
};
class DTB : public TLB
{
public:
typedef X86DTBParams Params;
DTB(const Params *p) : TLB(p)
{
_allowNX = true;
}
Fault translate(RequestPtr &req, ThreadContext *tc, bool write);
#if FULL_SYSTEM
Tick doMmuRegRead(ThreadContext *tc, Packet *pkt);
Tick doMmuRegWrite(ThreadContext *tc, Packet *pkt);
#endif
// Checkpointing
virtual void serialize(std::ostream &os);
virtual void unserialize(Checkpoint *cp, const std::string §ion);
};
}
#endif // __ARCH_X86_TLB_HH__
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