tlb.cc revision 5100:7a0180040755 
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#include <cstring>
59
60#include "config/full_system.hh"
61
62#if FULL_SYSTEM
63
64#include "arch/x86/tlb.hh"
65#include "base/bitfield.hh"
66#include "base/trace.hh"
67#include "cpu/thread_context.hh"
68#include "cpu/base.hh"
69#include "mem/packet_access.hh"
70#include "mem/request.hh"
71#include "sim/system.hh"
72
73namespace X86ISA {
74
75TLB::TLB(const Params *p) : SimObject(p)
76{
77}
78
79Fault
80ITB::translate(RequestPtr &req, ThreadContext *tc)
81{
82    return NoFault;
83}
84
85
86
87Fault
88DTB::translate(RequestPtr &req, ThreadContext *tc, bool write)
89{
90    return NoFault;
91};
92
93#if FULL_SYSTEM
94
95Tick
96DTB::doMmuRegRead(ThreadContext *tc, Packet *pkt)
97{
98    return tc->getCpuPtr()->ticks(1);
99}
100
101Tick
102DTB::doMmuRegWrite(ThreadContext *tc, Packet *pkt)
103{
104    return tc->getCpuPtr()->ticks(1);
105}
106
107#endif
108
109void
110TLB::serialize(std::ostream &os)
111{
112}
113
114void
115TLB::unserialize(Checkpoint *cp, const std::string &section)
116{
117}
118
119void
120DTB::serialize(std::ostream &os)
121{
122    TLB::serialize(os);
123}
124
125void
126DTB::unserialize(Checkpoint *cp, const std::string &section)
127{
128    TLB::unserialize(cp, section);
129}
130
131/* end namespace X86ISA */ }
132
133#else
134
135#include <cstring>
136
137#include "arch/x86/tlb.hh"
138#include "params/X86DTB.hh"
139#include "params/X86ITB.hh"
140#include "sim/serialize.hh"
141
142namespace X86ISA {
143    void
144    TlbEntry::serialize(std::ostream &os)
145    {
146        SERIALIZE_SCALAR(pageStart);
147    }
148
149    void
150    TlbEntry::unserialize(Checkpoint *cp, const std::string &section)
151    {
152        UNSERIALIZE_SCALAR(pageStart);
153    }
154};
155
156#endif
157
158X86ISA::ITB *
159X86ITBParams::create()
160{
161    return new X86ISA::ITB(this);
162}
163
164X86ISA::DTB *
165X86DTBParams::create()
166{
167    return new X86ISA::DTB(this);
168}
169