SubBlock.cc revision 7055 
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/SubBlock.hh"
30
31SubBlock::SubBlock(const Address& addr, int size)
32{
33    m_address = addr;
34    setSize(size);
35    for (int i = 0; i < size; i++) {
36        setByte(i, 0);
37    }
38}
39
40void
41SubBlock::internalMergeFrom(const DataBlock& data)
42{
43    int size = getSize();
44    assert(size > 0);
45    int offset = m_address.getOffset();
46    for (int i = 0; i < size; i++) {
47        this->setByte(i, data.getByte(offset + i));
48    }
49}
50
51void
52SubBlock::internalMergeTo(DataBlock& data) const
53{
54    int size = getSize();
55    assert(size > 0);
56    int offset = m_address.getOffset();
57    for (int i = 0; i < size; i++) {
58        // This will detect crossing a cache line boundary
59        data.setByte(offset + i, this->getByte(i));
60    }
61}
62
63void
64SubBlock::print(std::ostream& out) const
65{
66    out << "[" << m_address << ", " << getSize() << ", " << m_data << "]";
67}
68
69
70
71