tlb.hh revision 5034 
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 "params/MipsDTB.hh"
35#include "params/MipsITB.hh"
36#include "sim/tlb.hh"
37
38namespace MipsISA
39{
40    struct TlbEntry
41    {
42        Addr pageStart;
43        TlbEntry() {}
44        TlbEntry(Addr paddr) : pageStart(paddr) {}
45
46        void serialize(std::ostream &os);
47        void unserialize(Checkpoint *cp, const std::string &section);
48    };
49
50    class TLB : public GenericTLB
51    {
52      public:
53        typedef MipsTLBParams Params;
54        TLB(const Params *p) : GenericTLB(p)
55        {}
56
57        Fault translate(RequestPtr req, ThreadContext *tc, bool=false);
58    };
59
60    class ITB : public TLB
61    {
62      public:
63        typedef MipsITBParams Params;
64        ITB(const Params *p) : TLB(p)
65        {}
66    };
67
68    class DTB : public TLB
69    {
70      public:
71        typedef MipsDTBParams Params;
72        DTB(const Params *p) : TLB(p)
73        {}
74    };
75};
76
77#endif // __ARCH_MIPS_TLB_HH__
78