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
38namespace AlphaISA {
39
40struct VAddr
41{
42 static const int ImplBits = 43;
43 static const Addr ImplMask = (ULL(1) << ImplBits) - 1;
44 static const Addr UnImplMask = ~ImplMask;
45
46 Addr addr;
47
48 VAddr(Addr a) : addr(a) {}
49 operator Addr() const { return addr; }
50 const VAddr &operator=(Addr a) { addr = a; return *this; }
51
52 Addr vpn() const { return (addr & ImplMask) >> PageShift; }
53 Addr page() const { return addr & PageMask; }
54 Addr offset() const { return addr & PageOffset; }
55
56 Addr level3() const
57 { return PteAddr(addr >> PageShift); }
58 Addr level2() const
59 { return PteAddr(addr >> (NPtePageShift + PageShift)); }
60 Addr level1() const
61 { return PteAddr(addr >> (2 * NPtePageShift + PageShift)); }
62};
63
64struct PageTableEntry
65{
66 PageTableEntry(uint64_t e) : entry(e) {}
67 uint64_t entry;
68 operator uint64_t() const { return entry; }
69 const PageTableEntry &operator=(uint64_t e) { entry = e; return *this; }
70 const PageTableEntry &operator=(const PageTableEntry &e)
71 { entry = e.entry; return *this; }
72
73 Addr _pfn() const { return (entry >> 32) & 0xffffffff; }
74 Addr _sw() const { return (entry >> 16) & 0xffff; }
75 int _rsv0() const { return (entry >> 14) & 0x3; }
76 bool _uwe() const { return (entry >> 13) & 0x1; }
77 bool _kwe() const { return (entry >> 12) & 0x1; }
78 int _rsv1() const { return (entry >> 10) & 0x3; }
79 bool _ure() const { return (entry >> 9) & 0x1; }
80 bool _kre() const { return (entry >> 8) & 0x1; }
81 bool _nomb() const { return (entry >> 7) & 0x1; }
82 int _gh() const { return (entry >> 5) & 0x3; }
83 bool _asm_() const { return (entry >> 4) & 0x1; }
84 bool _foe() const { return (entry >> 3) & 0x1; }
85 bool _fow() const { return (entry >> 2) & 0x1; }
86 bool _for() const { return (entry >> 1) & 0x1; }
87 bool valid() const { return (entry >> 0) & 0x1; }
88
89 Addr paddr() const { return _pfn() << PageShift; }
90};
91
92// ITB/DTB table entry
93struct TlbEntry
94{
95 Addr tag; // virtual page number tag
96 Addr ppn; // physical page number
97 uint8_t xre; // read permissions - VMEM_PERM_* mask
98 uint8_t xwe; // write permissions - VMEM_PERM_* mask
99 uint8_t asn; // address space number
100 bool asma; // address space match
101 bool fonr; // fault on read
102 bool fonw; // fault on write
103 bool valid; // valid page table entry
104
105
106 //Construct an entry that maps to physical address addr.
| 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
38namespace AlphaISA {
39
40struct VAddr
41{
42 static const int ImplBits = 43;
43 static const Addr ImplMask = (ULL(1) << ImplBits) - 1;
44 static const Addr UnImplMask = ~ImplMask;
45
46 Addr addr;
47
48 VAddr(Addr a) : addr(a) {}
49 operator Addr() const { return addr; }
50 const VAddr &operator=(Addr a) { addr = a; return *this; }
51
52 Addr vpn() const { return (addr & ImplMask) >> PageShift; }
53 Addr page() const { return addr & PageMask; }
54 Addr offset() const { return addr & PageOffset; }
55
56 Addr level3() const
57 { return PteAddr(addr >> PageShift); }
58 Addr level2() const
59 { return PteAddr(addr >> (NPtePageShift + PageShift)); }
60 Addr level1() const
61 { return PteAddr(addr >> (2 * NPtePageShift + PageShift)); }
62};
63
64struct PageTableEntry
65{
66 PageTableEntry(uint64_t e) : entry(e) {}
67 uint64_t entry;
68 operator uint64_t() const { return entry; }
69 const PageTableEntry &operator=(uint64_t e) { entry = e; return *this; }
70 const PageTableEntry &operator=(const PageTableEntry &e)
71 { entry = e.entry; return *this; }
72
73 Addr _pfn() const { return (entry >> 32) & 0xffffffff; }
74 Addr _sw() const { return (entry >> 16) & 0xffff; }
75 int _rsv0() const { return (entry >> 14) & 0x3; }
76 bool _uwe() const { return (entry >> 13) & 0x1; }
77 bool _kwe() const { return (entry >> 12) & 0x1; }
78 int _rsv1() const { return (entry >> 10) & 0x3; }
79 bool _ure() const { return (entry >> 9) & 0x1; }
80 bool _kre() const { return (entry >> 8) & 0x1; }
81 bool _nomb() const { return (entry >> 7) & 0x1; }
82 int _gh() const { return (entry >> 5) & 0x3; }
83 bool _asm_() const { return (entry >> 4) & 0x1; }
84 bool _foe() const { return (entry >> 3) & 0x1; }
85 bool _fow() const { return (entry >> 2) & 0x1; }
86 bool _for() const { return (entry >> 1) & 0x1; }
87 bool valid() const { return (entry >> 0) & 0x1; }
88
89 Addr paddr() const { return _pfn() << PageShift; }
90};
91
92// ITB/DTB table entry
93struct TlbEntry
94{
95 Addr tag; // virtual page number tag
96 Addr ppn; // physical page number
97 uint8_t xre; // read permissions - VMEM_PERM_* mask
98 uint8_t xwe; // write permissions - VMEM_PERM_* mask
99 uint8_t asn; // address space number
100 bool asma; // address space match
101 bool fonr; // fault on read
102 bool fonw; // fault on write
103 bool valid; // valid page table entry
104
105
106 //Construct an entry that maps to physical address addr.
|
107 TlbEntry(Addr _asn, Addr _vaddr, Addr _paddr)
| 107 TlbEntry(Addr _asn, Addr _vaddr, Addr _paddr,
108 bool uncacheable, bool read_only)
|
120 }
121
122 TlbEntry()
123 {}
124
125 void
126 updateVaddr(Addr new_vaddr)
127 {
128 VAddr vaddr(new_vaddr);
129 tag = vaddr.vpn();
130 }
131
132 Addr
133 pageStart()
134 {
135 return ppn << PageShift;
136 }
137
138 void serialize(std::ostream &os);
139 void unserialize(Checkpoint *cp, const std::string §ion);
140};
141
142} // namespace AlphaISA
143
144#endif // __ARCH_ALPHA_PAGETABLE_H__
145
| 124 }
125
126 TlbEntry()
127 {}
128
129 void
130 updateVaddr(Addr new_vaddr)
131 {
132 VAddr vaddr(new_vaddr);
133 tag = vaddr.vpn();
134 }
135
136 Addr
137 pageStart()
138 {
139 return ppn << PageShift;
140 }
141
142 void serialize(std::ostream &os);
143 void unserialize(Checkpoint *cp, const std::string §ion);
144};
145
146} // namespace AlphaISA
147
148#endif // __ARCH_ALPHA_PAGETABLE_H__
149
|