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_MAP_HH__
32#define __ARCH_SPARC_TLB_MAP_HH__
33
34#include "arch/sparc/pagetable.hh"
35#include <map>
36
37namespace SparcISA
38{
39
40class TlbMap
41{
42 private:
43 typedef std::map<TlbRange, TlbEntry*> RangeMap;
44 RangeMap tree;
45
46 public:
47 typedef RangeMap::iterator iterator;
48
49 iterator
50 find(const TlbRange &r)
51 {
52 iterator i;
53
54 i = tree.upper_bound(r);
55
56 if (i == tree.begin()) {
57 if (r.real == i->first.real &&
58 r.partitionId == i->first.partitionId &&
59 i->first.va < r.va + r.size &&
60 i->first.va+i->first.size >= r.va &&
61 (r.real || r.contextId == i->first.contextId))
62 return i;
63 else
64 // Nothing could match, so return end()
65 return tree.end();
66 }
67
68 i--;
69
70 if (r.real != i->first.real)
71 return tree.end();
72 if (!r.real && r.contextId != i->first.contextId)
73 return tree.end();
74 if (r.partitionId != i->first.partitionId)
75 return tree.end();
76 if (i->first.va <= r.va+r.size &&
77 i->first.va+i->first.size >= r.va)
78 return i;
79
80 return tree.end();
81 }
82
83 bool
84 intersect(const TlbRange &r)
85 {
86 iterator i;
87 i = find(r);
88 if (i != tree.end())
89 return true;
90 return false;
91 }
92
93
94 iterator
95 insert(TlbRange &r, TlbEntry *d)
96 {
97 if (intersect(r))
98 return tree.end();
99
100 return tree.insert(std::make_pair<TlbRange,TlbEntry*>(r, d)).first;
101 }
102
103 size_t
104 erase(TlbRange k)
105 {
106 return tree.erase(k);
107 }
108
109 void
110 erase(iterator p)
111 {
112 tree.erase(p);
113 }
114
115 void
116 erase(iterator p, iterator q)
117 {
118 tree.erase(p,q);
119 }
120
121 void
122 clear()
123 {
124 tree.erase(tree.begin(), tree.end());
125 }
126
127 iterator
128 begin()
129 {
130 return tree.begin();
131 }
132
133 iterator
134 end()
135 {
136 return tree.end();
137 }
138
139 size_t
140 size()
141 {
142 return tree.size();
143 }
144
145 bool
146 empty()
147 {
148 return tree.empty();
149 }
150
151 void
152 print()
153 {
154 iterator i;
155 i = tree.begin();
156 while (i != tree.end()) {
157 std::cout << std::hex << i->first.va << " " << i->first.size << " " <<
158 i->first.contextId << " " << i->first.partitionId << " " <<
159 i->first.real << " " << i->second << std::endl;
160 i++;
161 }
162 }
163
164};
165
166};
167
168#endif // __ARCH_SPARC_TLB_MAP_HH__