tlb.hh revision 5118:f1b1cb6d0fbe 
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#ifndef __ARCH_X86_TLB_HH__
59#define __ARCH_X86_TLB_HH__
60
61#include "config/full_system.hh"
62
63#if FULL_SYSTEM
64
65#include "arch/segmentregs.hh"
66#include "mem/request.hh"
67#include "params/X86DTB.hh"
68#include "params/X86ITB.hh"
69#include "sim/faults.hh"
70#include "sim/sim_object.hh"
71
72class ThreadContext;
73class Packet;
74
75namespace X86ISA
76{
77    static const unsigned StoreCheck = 1 << NUM_SEGMENTREGS;
78
79    struct TlbEntry
80    {
81        Addr pageStart;
82        TlbEntry() {}
83        TlbEntry(Addr paddr) : pageStart(paddr) {}
84
85        void serialize(std::ostream &os);
86        void unserialize(Checkpoint *cp, const std::string &section);
87    };
88
89class TLB : public SimObject
90{
91  public:
92    typedef X86TLBParams Params;
93    TLB(const Params *p);
94
95    void dumpAll();
96
97    // Checkpointing
98    virtual void serialize(std::ostream &os);
99    virtual void unserialize(Checkpoint *cp, const std::string &section);
100};
101
102class ITB : public TLB
103{
104  public:
105    typedef X86ITBParams Params;
106    ITB(const Params *p) : TLB(p)
107    {
108    }
109
110    Fault translate(RequestPtr &req, ThreadContext *tc);
111
112    friend class DTB;
113};
114
115class DTB : public TLB
116{
117  public:
118    typedef X86DTBParams Params;
119    DTB(const Params *p) : TLB(p)
120    {
121    }
122
123    Fault translate(RequestPtr &req, ThreadContext *tc, bool write);
124#if FULL_SYSTEM
125    Tick doMmuRegRead(ThreadContext *tc, Packet *pkt);
126    Tick doMmuRegWrite(ThreadContext *tc, Packet *pkt);
127#endif
128
129    // Checkpointing
130    virtual void serialize(std::ostream &os);
131    virtual void unserialize(Checkpoint *cp, const std::string &section);
132};
133
134}
135
136#else
137
138#include <iostream>
139
140#include "arch/x86/segmentregs.hh"
141#include "sim/host.hh"
142#include "sim/tlb.hh"
143
144class Checkpoint;
145
146namespace X86ISA
147{
148    static const unsigned StoreCheck = 1 << NUM_SEGMENTREGS;
149
150    struct TlbEntry
151    {
152        Addr pageStart;
153        TlbEntry() {}
154        TlbEntry(Addr paddr) : pageStart(paddr) {}
155
156        void serialize(std::ostream &os);
157        void unserialize(Checkpoint *cp, const std::string &section);
158    };
159
160    class ITB : public GenericTLB
161    {
162      public:
163        ITB(const Params *p) : GenericTLB(p)
164        {}
165    };
166
167    class DTB : public GenericTLB
168    {
169      public:
170        DTB(const Params *p) : GenericTLB(p)
171        {}
172    };
173};
174
175#endif
176
177#endif // __ARCH_X86_TLB_HH__
178