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/*
* 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)
{
if (m_alloc) {
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 << setfill(' ');
}
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
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