DataBlock.hh revision 8090:722a0d28ee83 
1/*
2 * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
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
29#ifndef __MEM_RUBY_COMMON_DATABLOCK_HH__
30#define __MEM_RUBY_COMMON_DATABLOCK_HH__
31
32#include <iomanip>
33#include <iostream>
34
35#include "mem/ruby/common/Global.hh"
36
37class DataBlock
38{
39  public:
40    DataBlock()
41    {
42        alloc();
43    }
44
45    DataBlock(const DataBlock &cp);
46
47    ~DataBlock()
48    {
49        if (m_alloc)
50            delete [] m_data;
51    }
52
53    DataBlock& operator=(const DataBlock& obj);
54
55    void assign(uint8* data);
56
57    void clear();
58    uint8 getByte(int whichByte) const;
59    const uint8* getData(int offset, int len) const;
60    void setByte(int whichByte, uint8 data);
61    void setData(uint8* data, int offset, int len);
62    void copyPartial(const DataBlock & dblk, int offset, int len);
63    bool equal(const DataBlock& obj) const;
64    void print(std::ostream& out) const;
65
66  private:
67    void alloc();
68    uint8* m_data;
69    bool m_alloc;
70};
71
72inline void
73DataBlock::assign(uint8* data)
74{
75    if (m_alloc) {
76        delete [] m_data;
77    }
78    m_data = data;
79    m_alloc = false;
80}
81
82inline uint8
83DataBlock::getByte(int whichByte) const
84{
85    return m_data[whichByte];
86}
87
88inline void
89DataBlock::setByte(int whichByte, uint8 data)
90{
91    m_data[whichByte] = data;
92}
93
94inline void
95DataBlock::copyPartial(const DataBlock & dblk, int offset, int len)
96{
97    setData(&dblk.m_data[offset], offset, len);
98}
99
100inline std::ostream&
101operator<<(std::ostream& out, const DataBlock& obj)
102{
103    obj.print(out);
104    out << std::flush;
105    return out;
106}
107
108inline bool
109operator==(const DataBlock& obj1,const DataBlock& obj2)
110{
111    return obj1.equal(obj2);
112}
113
114#endif // __MEM_RUBY_COMMON_DATABLOCK_HH__
115