gem5/src/arch/x86/tlb.cc

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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
*/
#include <cstring>
#include "config/full_system.hh"
#if FULL_SYSTEM
#include "arch/x86/tlb.hh"
#include "base/bitfield.hh"
#include "base/trace.hh"
#include "cpu/thread_context.hh"
#include "cpu/base.hh"
#include "mem/packet_access.hh"
#include "mem/request.hh"
#include "sim/system.hh"
namespace X86ISA {
TLB::TLB(const Params *p) : SimObject(p)
{
}
Fault
ITB::translate(RequestPtr &req, ThreadContext *tc)
{
return NoFault;
}
Fault
DTB::translate(RequestPtr &req, ThreadContext *tc, bool write)
{
return NoFault;
};
#if FULL_SYSTEM
Tick
DTB::doMmuRegRead(ThreadContext *tc, Packet *pkt)
{
return tc->getCpuPtr()->cycles(1);
}
Tick
DTB::doMmuRegWrite(ThreadContext *tc, Packet *pkt)
{
return tc->getCpuPtr()->cycles(1);
}
#endif
void
TLB::serialize(std::ostream &os)
{
}
void
TLB::unserialize(Checkpoint *cp, const std::string &section)
{
}
void
DTB::serialize(std::ostream &os)
{
TLB::serialize(os);
}
void
DTB::unserialize(Checkpoint *cp, const std::string &section)
{
TLB::unserialize(cp, section);
}
/* end namespace X86ISA */ }
#else
#include <cstring>
#include "arch/x86/tlb.hh"
#include "params/X86DTB.hh"
#include "params/X86ITB.hh"
#include "sim/serialize.hh"
namespace X86ISA {
void
TlbEntry::serialize(std::ostream &os)
{
SERIALIZE_SCALAR(pageStart);
}
void
TlbEntry::unserialize(Checkpoint *cp, const std::string &section)
{
UNSERIALIZE_SCALAR(pageStart);
}
};
#endif
X86ISA::ITB *
X86ITBParams::create()
{
return new X86ISA::ITB(this);
}
X86ISA::DTB *
X86DTBParams::create()
{
return new X86ISA::DTB(this);
}