1/*
2 * Copyright (c) 2010 ARM Limited
3 * All rights reserved
4 *
5 * The license below extends only to copyright in the software and shall
6 * not be construed as granting a license to any other intellectual
7 * property including but not limited to intellectual property relating
8 * to a hardware implementation of the functionality of the software
9 * licensed hereunder. You may use the software subject to the license
10 * terms below provided that you ensure that this notice is replicated
11 * unmodified and in its entirety in all distributions of the software,
12 * modified or unmodified, in source code or in binary form.
13 *
14 * Copyright (c) 2002-2005 The Regents of The University of Michigan
15 * All rights reserved.
16 *
17 * Redistribution and use in source and binary forms, with or without
18 * modification, are permitted provided that the following conditions are
19 * met: redistributions of source code must retain the above copyright
20 * notice, this list of conditions and the following disclaimer;
21 * redistributions in binary form must reproduce the above copyright
22 * notice, this list of conditions and the following disclaimer in the

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34 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
35 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
36 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
37 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
38 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 *
40 * Authors: Nathan Binkert
41 * Steve Reinhardt
42 * Ali Saidi
43 */
44
45#ifndef __ARCH_ARM_PAGETABLE_H__
46#define __ARCH_ARM_PAGETABLE_H__
47
48#include "arch/arm/isa_traits.hh"
49#include "arch/arm/utility.hh"
50#include "arch/arm/vtophys.hh"
51#include "config/full_system.hh"
52
53namespace ArmISA {
54
55struct VAddr
56{
57 VAddr(Addr a) { panic("not implemented yet."); }
58};
59
60
61// ITB/DTB page table entry
62struct PTE
63{
64 void serialize(std::ostream &os)
65 {
66 panic("Need to implement PTE serialization\n");
67 }
68
69 void unserialize(Checkpoint *cp, const std::string &section)
70 {
71 panic("Need to implement PTE serialization\n");
72 }
73
74};
75
76// ITB/DTB table entry
77struct TlbEntry
78{
79 Addr tag; // virtual page number tag
80 Addr ppn; // physical page number
81 uint8_t asn; // address space number
82 bool valid; // valid page table entry
83
84
85 //Construct an entry that maps to physical address addr.
86 TlbEntry(Addr _asn, Addr _vaddr, Addr _paddr)
87 {
88 tag = _vaddr >> PageShift;
89 ppn = _paddr >> PageShift;
90 asn = _asn;
91 valid = true;
92 }
93
94 TlbEntry()
95 {}
96
97 void
98 updateVaddr(Addr new_vaddr)
99 {
100 tag = new_vaddr >> PageShift;
101 }
102
103 Addr
104 pageStart()
105 {
106 return ppn << PageShift;
107 }
108
109 void serialize(std::ostream &os);
110 void unserialize(Checkpoint *cp, const std::string &section);
111};
112
113
114
115};
116#endif // __ARCH_ARM_PAGETABLE_H__
117