tlb.hh revision 5184 
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 asn, Addr vaddr, Addr paddr) : _pageStart(paddr) {}
45
46        Addr pageStart()
47        {
48            return _pageStart;
49        }
50
51        void serialize(std::ostream &os);
52        void unserialize(Checkpoint *cp, const std::string &section);
53    };
54
55    class TLB : public GenericTLB
56    {
57      public:
58        typedef MipsTLBParams Params;
59        TLB(const Params *p) : GenericTLB(p)
60        {}
61
62        Fault translate(RequestPtr req, ThreadContext *tc, bool=false);
63    };
64
65    class ITB : public TLB
66    {
67      public:
68        typedef MipsITBParams Params;
69        ITB(const Params *p) : TLB(p)
70        {}
71    };
72
73    class DTB : public TLB
74    {
75      public:
76        typedef MipsDTBParams Params;
77        DTB(const Params *p) : TLB(p)
78        {}
79    };
80};
81
82#endif // __ARCH_MIPS_TLB_HH__
83