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#include "mem/ruby/common/DataBlock.hh"
30
31#include "mem/ruby/common/WriteMask.hh"
32#include "mem/ruby/system/RubySystem.hh"
33
34DataBlock::DataBlock(const DataBlock &cp)
35{
36    m_data = new uint8_t[RubySystem::getBlockSizeBytes()];
37    memcpy(m_data, cp.m_data, RubySystem::getBlockSizeBytes());
38    m_alloc = true;
39}
40
41void
42DataBlock::alloc()
43{
44    m_data = new uint8_t[RubySystem::getBlockSizeBytes()];
45    m_alloc = true;
46    clear();
47}
48
49void
50DataBlock::clear()
51{
52    memset(m_data, 0, RubySystem::getBlockSizeBytes());
53}
54
55bool
56DataBlock::equal(const DataBlock& obj) const
57{
58    return !memcmp(m_data, obj.m_data, RubySystem::getBlockSizeBytes());
59}
60
61void
62DataBlock::copyPartial(const DataBlock &dblk, const WriteMask &mask)
63{
64    for (int i = 0; i < RubySystem::getBlockSizeBytes(); i++) {
65        if (mask.getMask(i, 1)) {
66            m_data[i] = dblk.m_data[i];
67        }
68    }
69}
70
71void
72DataBlock::atomicPartial(const DataBlock &dblk, const WriteMask &mask)
73{
74    for (int i = 0; i < RubySystem::getBlockSizeBytes(); i++) {
75        m_data[i] = dblk.m_data[i];
76    }
77    mask.performAtomic(m_data);
78}
79
80void
81DataBlock::print(std::ostream& out) const
82{
83    using namespace std;
84
85    int size = RubySystem::getBlockSizeBytes();
86    out << "[ ";
87    for (int i = 0; i < size; i++) {
88        out << setw(2) << setfill('0') << hex << "0x" << (int)m_data[i] << " ";
89        out << setfill(' ');
90    }
91    out << dec << "]" << flush;
92}
93
94const uint8_t*
95DataBlock::getData(int offset, int len) const
96{
97    assert(offset + len <= RubySystem::getBlockSizeBytes());
98    return &m_data[offset];
99}
100
101uint8_t*
102DataBlock::getDataMod(int offset)
103{
104    return &m_data[offset];
105}
106
107void
108DataBlock::setData(const uint8_t *data, int offset, int len)
109{
110    assert(offset + len <= RubySystem::getBlockSizeBytes());
111    memcpy(&m_data[offset], data, len);
112}
113
114DataBlock &
115DataBlock::operator=(const DataBlock & obj)
116{
117    memcpy(m_data, obj.m_data, RubySystem::getBlockSizeBytes());
118    return *this;
119}
120