vptr.hh (2680:246e7104f744) | vptr.hh (5191:bebbfea0baf3) |
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1/* 2 * Copyright (c) 2004-2005 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; --- 19 unchanged lines hidden (view full) --- 28 * Authors: Nathan Binkert 29 */ 30 31#ifndef __ARCH_ALPHA_VPTR_HH__ 32#define __ARCH_ALPHA_VPTR_HH__ 33 34#include "arch/vtophys.hh" 35#include "arch/isa_traits.hh" | 1/* 2 * Copyright (c) 2004-2005 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; --- 19 unchanged lines hidden (view full) --- 28 * Authors: Nathan Binkert 29 */ 30 31#ifndef __ARCH_ALPHA_VPTR_HH__ 32#define __ARCH_ALPHA_VPTR_HH__ 33 34#include "arch/vtophys.hh" 35#include "arch/isa_traits.hh" |
36#include "mem/vport.hh" |
|
36 37class ThreadContext; 38 39template <class T> 40class VPtr 41{ 42 public: 43 typedef T Type; 44 | 37 38class ThreadContext; 39 40template <class T> 41class VPtr 42{ 43 public: 44 typedef T Type; 45 |
45 private: | 46 protected: |
46 ThreadContext *tc; 47 Addr ptr; | 47 ThreadContext *tc; 48 Addr ptr; |
49 Addr buffer[(sizeof(T)-1)/sizeof(Addr) + 1]; |
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48 49 public: | 50 51 public: |
50 ThreadContext *GetTC() const { return tc; } 51 Addr GetPointer() const { return ptr; } | 52 explicit VPtr(ThreadContext *_tc, Addr p = 0) 53 : tc(_tc), ptr(p) 54 { 55 refresh(); 56 } |
52 | 57 |
53 public: 54 explicit VPtr(ThreadContext *_tc, Addr p = 0) : tc(_tc), ptr(p) { } | |
55 template <class U> | 58 template <class U> |
56 VPtr(const VPtr<U> &vp) : tc(vp.GetTC()), ptr(vp.GetPointer()) {} 57 ~VPtr() {} | 59 VPtr(const VPtr &vp) 60 : tc(vp.tc), ptr(vp.ptr) 61 { 62 refresh(); 63 } |
58 | 64 |
59 bool operator!() const | 65 ~VPtr() 66 {} 67 68 void 69 refresh() |
60 { | 70 { |
61 return ptr == 0; | 71 if (!ptr) 72 return; 73 74 VirtualPort *port = tc->getVirtPort(tc); 75 port->readBlob(ptr, buffer, sizeof(T)); 76 tc->delVirtPort(port); |
62 } 63 | 77 } 78 |
64 VPtr<T> operator+(int offset) | 79 bool 80 operator!() const |
65 { | 81 { |
66 VPtr<T> ptr(*this); 67 ptr += offset; | 82 return ptr == 0; 83 } |
68 | 84 |
69 return ptr; | 85 VPtr<T> 86 operator+(int offset) 87 { 88 return VPtr<T>(tc, ptr + offset); |
70 } 71 | 89 } 90 |
72 const VPtr<T> &operator+=(int offset) | 91 const VPtr 92 operator+=(int offset) |
73 { 74 ptr += offset; | 93 { 94 ptr += offset; |
75 assert((ptr & (TheISA::PageBytes - 1)) + sizeof(T) 76 < TheISA::PageBytes); | 95 refresh(); |
77 78 return *this; 79 } 80 | 96 97 return *this; 98 } 99 |
81 const VPtr<T> &operator=(Addr p) | 100 const VPtr 101 operator=(Addr p) |
82 { | 102 { |
83 assert((p & (TheISA::PageBytes - 1)) + sizeof(T) 84 < TheISA::PageBytes); | |
85 ptr = p; | 103 ptr = p; |
104 refresh(); |
|
86 87 return *this; 88 } 89 90 template <class U> | 105 106 return *this; 107 } 108 109 template <class U> |
91 const VPtr<T> &operator=(const VPtr<U> &vp) | 110 const VPtr 111 operator=(const VPtr<U> &vp) |
92 { | 112 { |
93 tc = vp.GetTC(); 94 ptr = vp.GetPointer(); | 113 tc = vp.tc; 114 ptr = vp.ptr; 115 refresh(); |
95 96 return *this; 97 } 98 99 operator T *() 100 { | 116 117 return *this; 118 } 119 120 operator T *() 121 { |
101 panic("Needs to be rewritten\n"); 102/* void *addr = vtomem(tc, ptr, sizeof(T)); 103 return (T *)addr; 104 */ | 122 return (T *)buffer; |
105 } 106 | 123 } 124 |
107 T *operator->() | 125 T * 126 operator->() |
108 { | 127 { |
109 panic("Needs to be rewritten\n"); 110/* void *addr = vtomem(tc, ptr, sizeof(T)); 111 return (T *)addr; 112 */ | 128 return (T *)buffer; |
113 } 114 | 129 } 130 |
115 T &operator*() | 131 T & 132 operator*() |
116 { | 133 { |
117 panic("Needs to be rewritten\n"); 118/* void *addr = vtomem(tc, ptr, sizeof(T)); 119 return *(T *)addr; 120 */ | 134 return *(T *)buffer; |
121 } 122}; 123 124#endif // __ARCH_ALPHA_VPTR_HH__ | 135 } 136}; 137 138#endif // __ARCH_ALPHA_VPTR_HH__ |