summaryrefslogtreecommitdiff
path: root/src/mem/ruby/common/DataBlock.hh
blob: ccd73c36bd3ac4729d86adf8151a31f82f843771 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166

/*
 * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met: redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer;
 * redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution;
 * neither the name of the copyright holders nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef DATABLOCK_H
#define DATABLOCK_H

#include "mem/ruby/common/Global.hh"
#include "mem/ruby/system/System.hh"
#include "mem/gems_common/Vector.hh"

class DataBlock {
 public:
  // Constructors
  DataBlock() {alloc();}
  DataBlock(const DataBlock & cp) {
    m_data = new uint8[RubySystem::getBlockSizeBytes()];
    memcpy(m_data, cp.m_data, RubySystem::getBlockSizeBytes());
    m_alloc = true;
  }

  // Destructor
  ~DataBlock() { if(m_alloc) delete [] m_data;}

  DataBlock& operator=(const DataBlock& obj);

  // Public Methods
  void assign(uint8* data);

  void clear();
  uint8 getByte(int whichByte) const;
  const uint8* getData(int offset, int len) const;
  void setByte(int whichByte, uint8 data);
  void setData(uint8* data, int offset, int len);
  void copyPartial(const DataBlock & dblk, int offset, int len);
  bool equal(const DataBlock& obj) const;
  void print(ostream& out) const;

private:
  void alloc();
  // Data Members (m_ prefix)
  uint8* m_data;
  bool m_alloc;
};

// Output operator declaration
ostream& operator<<(ostream& out, const DataBlock& obj);

bool operator==(const DataBlock& obj1, const DataBlock& obj2);

// inline functions for speed

inline
void DataBlock::assign(uint8* data)
{
  delete [] m_data;
  m_data = data;
  m_alloc = false;
}

inline
void DataBlock::alloc()
{
  m_data = new uint8[RubySystem::getBlockSizeBytes()];
  m_alloc = true;
  clear();
}

inline
void DataBlock::clear()
{
  memset(m_data, 0, RubySystem::getBlockSizeBytes());
}

inline
bool DataBlock::equal(const DataBlock& obj) const
{
  return !memcmp(m_data, obj.m_data, RubySystem::getBlockSizeBytes());
}

inline
void DataBlock::print(ostream& out) const
{
  int size = RubySystem::getBlockSizeBytes();
  out << "[ ";
  for (int i = 0; i < size; i++) {
    out << setw(2) << setfill('0') << hex << "0x" << (int)m_data[i] << " ";
  }
  out << dec << "]" << flush;
}

inline
uint8 DataBlock::getByte(int whichByte) const
{
  return m_data[whichByte];
}

inline
const uint8* DataBlock::getData(int offset, int len) const
{
  assert(offset + len <= RubySystem::getBlockSizeBytes());
  return &m_data[offset];
}

inline
void DataBlock::setByte(int whichByte, uint8 data)
{
    m_data[whichByte] = data;
}

inline
void DataBlock::setData(uint8* data, int offset, int len)
{
  assert(offset + len <= RubySystem::getBlockSizeBytes());
  memcpy(&m_data[offset], data, len);
}

inline
void DataBlock::copyPartial(const DataBlock & dblk, int offset, int len)
{
  setData(&dblk.m_data[offset], offset, len);
}

// ******************* Definitions *******************

// Output operator definition
extern inline
ostream& operator<<(ostream& out, const DataBlock& obj)
{
  obj.print(out);
  out << flush;
  return out;
}

extern inline
bool operator==(const DataBlock& obj1,const DataBlock& obj2)
{
  return (obj1.equal(obj2));
}

#endif //DATABLOCK_H