DataBlock.hh revision 7002
1 2/* 3 * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions are 8 * met: redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer; 10 * redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution; 13 * neither the name of the copyright holders nor the names of its 14 * contributors may be used to endorse or promote products derived from 15 * this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 20 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 21 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 23 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30#ifndef DATABLOCK_H 31#define DATABLOCK_H 32 33#include <iomanip> 34#include <iostream> 35 36#include "mem/ruby/common/Global.hh" 37#include "mem/ruby/system/System.hh" 38#include "mem/gems_common/Vector.hh" 39 40class DataBlock { 41 public: 42 // Constructors 43 DataBlock() {alloc();} 44 DataBlock(const DataBlock & cp) { 45 m_data = new uint8[RubySystem::getBlockSizeBytes()]; 46 memcpy(m_data, cp.m_data, RubySystem::getBlockSizeBytes()); 47 m_alloc = true; 48 } 49 50 // Destructor 51 ~DataBlock() { 52 if(m_alloc) { 53 delete [] m_data; 54 } 55 } 56 57 DataBlock& operator=(const DataBlock& obj); 58 59 // Public Methods 60 void assign(uint8* data); 61 62 void clear(); 63 uint8 getByte(int whichByte) const; 64 const uint8* getData(int offset, int len) const; 65 void setByte(int whichByte, uint8 data); 66 void setData(uint8* data, int offset, int len); 67 void copyPartial(const DataBlock & dblk, int offset, int len); 68 bool equal(const DataBlock& obj) const; 69 void print(std::ostream& out) const; 70 71private: 72 void alloc(); 73 // Data Members (m_ prefix) 74 uint8* m_data; 75 bool m_alloc; 76}; 77 78// Output operator declaration 79std::ostream& operator<<(std::ostream& out, const DataBlock& obj); 80 81bool operator==(const DataBlock& obj1, const DataBlock& obj2); 82 83// inline functions for speed 84 85inline 86void DataBlock::assign(uint8* data) 87{ 88 if (m_alloc) { 89 delete [] m_data; 90 } 91 m_data = data; 92 m_alloc = false; 93} 94 95inline 96void DataBlock::alloc() 97{ 98 m_data = new uint8[RubySystem::getBlockSizeBytes()]; 99 m_alloc = true; 100 clear(); 101} 102 103inline 104void DataBlock::clear() 105{ 106 memset(m_data, 0, RubySystem::getBlockSizeBytes()); 107} 108 109inline 110bool DataBlock::equal(const DataBlock& obj) const 111{ 112 return !memcmp(m_data, obj.m_data, RubySystem::getBlockSizeBytes()); 113} 114 115inline 116void DataBlock::print(std::ostream& out) const 117{ 118 using namespace std; 119 120 int size = RubySystem::getBlockSizeBytes(); 121 out << "[ "; 122 for (int i = 0; i < size; i++) { 123 out << setw(2) << setfill('0') << hex << "0x" << (int)m_data[i] << " "; 124 out << setfill(' '); 125 } 126 out << dec << "]" << flush; 127} 128 129inline 130uint8 DataBlock::getByte(int whichByte) const 131{ 132 return m_data[whichByte]; 133} 134 135inline 136const uint8* DataBlock::getData(int offset, int len) const 137{ 138 assert(offset + len <= RubySystem::getBlockSizeBytes()); 139 return &m_data[offset]; 140} 141 142inline 143void DataBlock::setByte(int whichByte, uint8 data) 144{ 145 m_data[whichByte] = data; 146} 147 148inline 149void DataBlock::setData(uint8* data, int offset, int len) 150{ 151 assert(offset + len <= RubySystem::getBlockSizeBytes()); 152 memcpy(&m_data[offset], data, len); 153} 154 155inline 156void DataBlock::copyPartial(const DataBlock & dblk, int offset, int len) 157{ 158 setData(&dblk.m_data[offset], offset, len); 159} 160 161// ******************* Definitions ******************* 162 163// Output operator definition 164extern inline 165std::ostream& operator<<(std::ostream& out, const DataBlock& obj) 166{ 167 obj.print(out); 168 out << std::flush; 169 return out; 170} 171 172extern inline 173bool operator==(const DataBlock& obj1,const DataBlock& obj2) 174{ 175 return (obj1.equal(obj2)); 176} 177 178#endif //DATABLOCK_H 179