tlb.hh revision 5019 
1/*
2 * Copyright (c) 2006 The Regents of The University of Michigan
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * Authors: Gabe Black
29 */
30
31#ifndef __ARCH_MIPS_TLB_HH__
32#define __ARCH_MIPS_TLB_HH__
33
34#include "sim/tlb.hh"
35
36namespace MipsISA
37{
38    struct TlbEntry
39    {
40        Addr pageStart;
41        TlbEntry() {}
42        TlbEntry(Addr paddr) : pageStart(paddr) {}
43
44        void serialize(std::ostream &os);
45        void unserialize(Checkpoint *cp, const std::string &section);
46    };
47
48    class TLB : public GenericTLB
49    {
50      public:
51        TLB(const std::string &name) : GenericTLB(name)
52        {}
53
54        Fault translate(RequestPtr req, ThreadContext *tc, bool=false);
55    };
56
57    class ITB : public TLB
58    {
59      public:
60        ITB(const std::string &name) : TLB(name)
61        {}
62    };
63
64    class DTB : public TLB
65    {
66      public:
67        DTB(const std::string &name) : TLB(name)
68        {}
69    };
70};
71
72#endif // __ARCH_MIPS_TLB_HH__
73