tlb.hh revision 3569 
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: Ali Saidi
29 */
30
31#ifndef __ARCH_SPARC_TLB_HH__
32#define __ARCH_SPARC_TLB_HH__
33
34#include "mem/request.hh"
35#include "sim/faults.hh"
36#include "sim/sim_object.hh"
37
38class ThreadContext;
39
40namespace SparcISA
41{
42    class TLB : public SimObject
43    {
44      public:
45        TLB(const std::string &name, int size) : SimObject(name)
46        {
47        }
48    };
49
50    class ITB : public TLB
51    {
52      public:
53        ITB(const std::string &name, int size) : TLB(name, size)
54        {
55        }
56
57        Fault translate(RequestPtr &req, ThreadContext *tc) const
58        {
59            return NoFault;
60        }
61    };
62
63    class DTB : public TLB
64    {
65      public:
66        DTB(const std::string &name, int size) : TLB(name, size)
67        {
68        }
69
70        Fault translate(RequestPtr &req, ThreadContext *tc, bool write) const
71        {
72            return NoFault;
73        }
74    };
75}
76
77#endif // __ARCH_SPARC_TLB_HH__
78