1/*
2 * Copyright (c) 2002-2005 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: Nathan Binkert
29 * Steve Reinhardt
30 */
31
32#ifndef __ARCH_ALPHA_PAGETABLE_H__
33#define __ARCH_ALPHA_PAGETABLE_H__
34
35#include "arch/alpha/isa_traits.hh"
36#include "arch/alpha/utility.hh"
37#include "config/full_system.hh"
38
39namespace AlphaISA {
40
41struct VAddr
42{
43 static const int ImplBits = 43;
44 static const Addr ImplMask = (ULL(1) << ImplBits) - 1;
45 static const Addr UnImplMask = ~ImplMask;
46
47 Addr addr;
48
49 VAddr(Addr a) : addr(a) {}
50 operator Addr() const { return addr; }
51 const VAddr &operator=(Addr a) { addr = a; return *this; }
52
53 Addr vpn() const { return (addr & ImplMask) >> PageShift; }
54 Addr page() const { return addr & PageMask; }
55 Addr offset() const { return addr & PageOffset; }
56
57 Addr level3() const
58 { return PteAddr(addr >> PageShift); }
59 Addr level2() const
| 1/*
2 * Copyright (c) 2002-2005 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: Nathan Binkert
29 * Steve Reinhardt
30 */
31
32#ifndef __ARCH_ALPHA_PAGETABLE_H__
33#define __ARCH_ALPHA_PAGETABLE_H__
34
35#include "arch/alpha/isa_traits.hh"
36#include "arch/alpha/utility.hh"
37#include "config/full_system.hh"
38
39namespace AlphaISA {
40
41struct VAddr
42{
43 static const int ImplBits = 43;
44 static const Addr ImplMask = (ULL(1) << ImplBits) - 1;
45 static const Addr UnImplMask = ~ImplMask;
46
47 Addr addr;
48
49 VAddr(Addr a) : addr(a) {}
50 operator Addr() const { return addr; }
51 const VAddr &operator=(Addr a) { addr = a; return *this; }
52
53 Addr vpn() const { return (addr & ImplMask) >> PageShift; }
54 Addr page() const { return addr & PageMask; }
55 Addr offset() const { return addr & PageOffset; }
56
57 Addr level3() const
58 { return PteAddr(addr >> PageShift); }
59 Addr level2() const
|
63};
64
65struct PageTableEntry
66{
67 PageTableEntry(uint64_t e) : entry(e) {}
68 uint64_t entry;
69 operator uint64_t() const { return entry; }
70 const PageTableEntry &operator=(uint64_t e) { entry = e; return *this; }
71 const PageTableEntry &operator=(const PageTableEntry &e)
72 { entry = e.entry; return *this; }
73
74 Addr _pfn() const { return (entry >> 32) & 0xffffffff; }
75 Addr _sw() const { return (entry >> 16) & 0xffff; }
76 int _rsv0() const { return (entry >> 14) & 0x3; }
77 bool _uwe() const { return (entry >> 13) & 0x1; }
78 bool _kwe() const { return (entry >> 12) & 0x1; }
79 int _rsv1() const { return (entry >> 10) & 0x3; }
80 bool _ure() const { return (entry >> 9) & 0x1; }
81 bool _kre() const { return (entry >> 8) & 0x1; }
82 bool _nomb() const { return (entry >> 7) & 0x1; }
83 int _gh() const { return (entry >> 5) & 0x3; }
84 bool _asm_() const { return (entry >> 4) & 0x1; }
85 bool _foe() const { return (entry >> 3) & 0x1; }
86 bool _fow() const { return (entry >> 2) & 0x1; }
87 bool _for() const { return (entry >> 1) & 0x1; }
88 bool valid() const { return (entry >> 0) & 0x1; }
89
90 Addr paddr() const { return _pfn() << PageShift; }
91};
92
93// ITB/DTB table entry
94struct TlbEntry
95{
96 Addr tag; // virtual page number tag
97 Addr ppn; // physical page number
98 uint8_t xre; // read permissions - VMEM_PERM_* mask
99 uint8_t xwe; // write permissions - VMEM_PERM_* mask
100 uint8_t asn; // address space number
101 bool asma; // address space match
102 bool fonr; // fault on read
103 bool fonw; // fault on write
104 bool valid; // valid page table entry
105
106
107 //Construct an entry that maps to physical address addr.
108 TlbEntry(Addr _asn, Addr _vaddr, Addr _paddr)
109 {
110 VAddr vaddr(_vaddr);
111 VAddr paddr(_paddr);
112 tag = vaddr.vpn();
113 ppn = paddr.vpn();
114 xre = 15;
115 xwe = 15;
116 asn = _asn;
117 asma = false;
118 fonr = false;
119 fonw = false;
120 valid = true;
121 }
122
123 TlbEntry()
124 {}
125
126 Addr
127 pageStart()
128 {
129 return ppn << PageShift;
130 }
131
132 void serialize(std::ostream &os);
133 void unserialize(Checkpoint *cp, const std::string §ion);
134};
135
136} // namespace AlphaISA
137
138#endif // __ARCH_ALPHA_PAGETABLE_H__
139
| 63};
64
65struct PageTableEntry
66{
67 PageTableEntry(uint64_t e) : entry(e) {}
68 uint64_t entry;
69 operator uint64_t() const { return entry; }
70 const PageTableEntry &operator=(uint64_t e) { entry = e; return *this; }
71 const PageTableEntry &operator=(const PageTableEntry &e)
72 { entry = e.entry; return *this; }
73
74 Addr _pfn() const { return (entry >> 32) & 0xffffffff; }
75 Addr _sw() const { return (entry >> 16) & 0xffff; }
76 int _rsv0() const { return (entry >> 14) & 0x3; }
77 bool _uwe() const { return (entry >> 13) & 0x1; }
78 bool _kwe() const { return (entry >> 12) & 0x1; }
79 int _rsv1() const { return (entry >> 10) & 0x3; }
80 bool _ure() const { return (entry >> 9) & 0x1; }
81 bool _kre() const { return (entry >> 8) & 0x1; }
82 bool _nomb() const { return (entry >> 7) & 0x1; }
83 int _gh() const { return (entry >> 5) & 0x3; }
84 bool _asm_() const { return (entry >> 4) & 0x1; }
85 bool _foe() const { return (entry >> 3) & 0x1; }
86 bool _fow() const { return (entry >> 2) & 0x1; }
87 bool _for() const { return (entry >> 1) & 0x1; }
88 bool valid() const { return (entry >> 0) & 0x1; }
89
90 Addr paddr() const { return _pfn() << PageShift; }
91};
92
93// ITB/DTB table entry
94struct TlbEntry
95{
96 Addr tag; // virtual page number tag
97 Addr ppn; // physical page number
98 uint8_t xre; // read permissions - VMEM_PERM_* mask
99 uint8_t xwe; // write permissions - VMEM_PERM_* mask
100 uint8_t asn; // address space number
101 bool asma; // address space match
102 bool fonr; // fault on read
103 bool fonw; // fault on write
104 bool valid; // valid page table entry
105
106
107 //Construct an entry that maps to physical address addr.
108 TlbEntry(Addr _asn, Addr _vaddr, Addr _paddr)
109 {
110 VAddr vaddr(_vaddr);
111 VAddr paddr(_paddr);
112 tag = vaddr.vpn();
113 ppn = paddr.vpn();
114 xre = 15;
115 xwe = 15;
116 asn = _asn;
117 asma = false;
118 fonr = false;
119 fonw = false;
120 valid = true;
121 }
122
123 TlbEntry()
124 {}
125
126 Addr
127 pageStart()
128 {
129 return ppn << PageShift;
130 }
131
132 void serialize(std::ostream &os);
133 void unserialize(Checkpoint *cp, const std::string §ion);
134};
135
136} // namespace AlphaISA
137
138#endif // __ARCH_ALPHA_PAGETABLE_H__
139
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