pagetable.hh (5568:d14250d688d2) pagetable.hh (5569:baeee670d4ce)
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;

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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
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;

--- 24 unchanged lines hidden (view full) ---

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
41 struct VAddr
42 {
43 static const int ImplBits = 43;
44 static const Addr ImplMask = (ULL(1) << ImplBits) - 1;
45 static const Addr UnImplMask = ~ImplMask;
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
46
47 VAddr(Addr a) : addr(a) {}
48 Addr addr;
49 operator Addr() const { return addr; }
50 const VAddr &operator=(Addr a) { addr = a; return *this; }
47 Addr addr;
51
48
52 Addr vpn() const { return (addr & ImplMask) >> PageShift; }
53 Addr page() const { return addr & PageMask; }
54 Addr offset() const { return addr & PageOffset; }
49 VAddr(Addr a) : addr(a) {}
50 operator Addr() const { return addr; }
51 const VAddr &operator=(Addr a) { addr = a; return *this; }
55
52
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 };
53 Addr vpn() const { return (addr & ImplMask) >> PageShift; }
54 Addr page() const { return addr & PageMask; }
55 Addr offset() const { return addr & PageOffset; }
63
56
64 struct 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; }
57 Addr level3() const
58 { return PteAddr(addr >> PageShift); }
59 Addr level2() const
60 { return PteAddr(addr >> NPtePageShift + PageShift); }
61 Addr level1() const
62 { return PteAddr(addr >> 2 * NPtePageShift + PageShift); }
63};
72
64
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; }
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; }
88
73
89 Addr paddr() const { return _pfn() << PageShift; }
90 };
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; }
91
89
92 // ITB/DTB table entry
93 struct TlbEntry
94 {
95 //Construct an entry that maps to physical address addr.
96 TlbEntry(Addr _asn, Addr _vaddr, Addr _paddr)
97 {
98 VAddr vaddr(_vaddr);
99 VAddr paddr(_paddr);
100 tag = vaddr.vpn();
101 ppn = paddr.vpn();
102 xre = 15;
103 xwe = 15;
104 asn = _asn;
105 asma = false;
106 fonr = false;
107 fonw = false;
108 valid = true;
109 }
110 TlbEntry()
111 {}
90 Addr paddr() const { return _pfn() << PageShift; }
91};
112
92
113 Addr tag; // virtual page number tag
114 Addr ppn; // physical page number
115 uint8_t xre; // read permissions - VMEM_PERM_* mask
116 uint8_t xwe; // write permissions - VMEM_PERM_* mask
117 uint8_t asn; // address space number
118 bool asma; // address space match
119 bool fonr; // fault on read
120 bool fonw; // fault on write
121 bool valid; // valid page table entry
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
122
105
123 Addr pageStart()
124 {
125 return ppn << PageShift;
126 }
127
106
128 void serialize(std::ostream &os);
129 void unserialize(Checkpoint *cp, const std::string &section);
130 };
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 }
131
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 &section);
132};
134};
135
136} // namespace AlphaISA
137
133#endif // __ARCH_ALPHA_PAGETABLE_H__
134
138#endif // __ARCH_ALPHA_PAGETABLE_H__
139