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;
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 */
30
31#ifndef __ARCH_ALPHA_VPTR_HH__
32#define __ARCH_ALPHA_VPTR_HH__
33
34#include "mem/fs_translating_port_proxy.hh"
35
36class ThreadContext;
37
38template <class T>
39class VPtr
40{
41 public:
42 typedef T Type;
43
44 protected:
45 ThreadContext *tc;
46 Addr ptr;
47 Addr buffer[(sizeof(T)-1)/sizeof(Addr) + 1];
48
49 public:
50 explicit VPtr(ThreadContext *_tc, Addr p = 0)
51 : tc(_tc), ptr(p)
52 {
53 refresh();
54 }
55
56 template <class U>
57 VPtr(const VPtr<U> &vp)
58 : tc(vp.tc), ptr(vp.ptr)
59 {
60 refresh();
61 }
62
63 ~VPtr()
64 {}
65
66 void
67 refresh()
68 {
69 if (!ptr)
70 return;
71
| 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;
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 */
30
31#ifndef __ARCH_ALPHA_VPTR_HH__
32#define __ARCH_ALPHA_VPTR_HH__
33
34#include "mem/fs_translating_port_proxy.hh"
35
36class ThreadContext;
37
38template <class T>
39class VPtr
40{
41 public:
42 typedef T Type;
43
44 protected:
45 ThreadContext *tc;
46 Addr ptr;
47 Addr buffer[(sizeof(T)-1)/sizeof(Addr) + 1];
48
49 public:
50 explicit VPtr(ThreadContext *_tc, Addr p = 0)
51 : tc(_tc), ptr(p)
52 {
53 refresh();
54 }
55
56 template <class U>
57 VPtr(const VPtr<U> &vp)
58 : tc(vp.tc), ptr(vp.ptr)
59 {
60 refresh();
61 }
62
63 ~VPtr()
64 {}
65
66 void
67 refresh()
68 {
69 if (!ptr)
70 return;
71
|
73 proxy.readBlob(ptr, buffer, sizeof(T));
74 }
75
76 bool
77 operator!() const
78 {
79 return ptr == 0;
80 }
81
82 VPtr<T>
83 operator+(int offset)
84 {
85 return VPtr<T>(tc, ptr + offset);
86 }
87
88 const VPtr<T> &
89 operator+=(int offset)
90 {
91 ptr += offset;
92 refresh();
93
94 return *this;
95 }
96
97 const VPtr<T> &
98 operator=(Addr p)
99 {
100 ptr = p;
101 refresh();
102
103 return *this;
104 }
105
106 template <class U>
107 const VPtr<T> &
108 operator=(const VPtr<U> &vp)
109 {
110 tc = vp.tc;
111 ptr = vp.ptr;
112 refresh();
113
114 return *this;
115 }
116
117 operator T *()
118 {
119 return (T *)buffer;
120 }
121
122 T *
123 operator->()
124 {
125 return (T *)buffer;
126 }
127
128 T &
129 operator*()
130 {
131 return *(T *)buffer;
132 }
133};
134
135#endif // __ARCH_ALPHA_VPTR_HH__
| 73 proxy.readBlob(ptr, buffer, sizeof(T));
74 }
75
76 bool
77 operator!() const
78 {
79 return ptr == 0;
80 }
81
82 VPtr<T>
83 operator+(int offset)
84 {
85 return VPtr<T>(tc, ptr + offset);
86 }
87
88 const VPtr<T> &
89 operator+=(int offset)
90 {
91 ptr += offset;
92 refresh();
93
94 return *this;
95 }
96
97 const VPtr<T> &
98 operator=(Addr p)
99 {
100 ptr = p;
101 refresh();
102
103 return *this;
104 }
105
106 template <class U>
107 const VPtr<T> &
108 operator=(const VPtr<U> &vp)
109 {
110 tc = vp.tc;
111 ptr = vp.ptr;
112 refresh();
113
114 return *this;
115 }
116
117 operator T *()
118 {
119 return (T *)buffer;
120 }
121
122 T *
123 operator->()
124 {
125 return (T *)buffer;
126 }
127
128 T &
129 operator*()
130 {
131 return *(T *)buffer;
132 }
133};
134
135#endif // __ARCH_ALPHA_VPTR_HH__
|