DataBlock.hh revision 6762:a22a47e60c21
112870Sgabeblack@google.com 212870Sgabeblack@google.com/* 312870Sgabeblack@google.com * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood 412870Sgabeblack@google.com * All rights reserved. 512870Sgabeblack@google.com * 612870Sgabeblack@google.com * Redistribution and use in source and binary forms, with or without 712870Sgabeblack@google.com * modification, are permitted provided that the following conditions are 812870Sgabeblack@google.com * met: redistributions of source code must retain the above copyright 912870Sgabeblack@google.com * notice, this list of conditions and the following disclaimer; 1012870Sgabeblack@google.com * redistributions in binary form must reproduce the above copyright 1112870Sgabeblack@google.com * notice, this list of conditions and the following disclaimer in the 1212870Sgabeblack@google.com * documentation and/or other materials provided with the distribution; 1312870Sgabeblack@google.com * neither the name of the copyright holders nor the names of its 1412870Sgabeblack@google.com * contributors may be used to endorse or promote products derived from 1512870Sgabeblack@google.com * this software without specific prior written permission. 1612870Sgabeblack@google.com * 1712870Sgabeblack@google.com * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 1812870Sgabeblack@google.com * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 1912870Sgabeblack@google.com * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 2012870Sgabeblack@google.com * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 2112870Sgabeblack@google.com * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 2212870Sgabeblack@google.com * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 2312870Sgabeblack@google.com * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 2412870Sgabeblack@google.com * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 2512870Sgabeblack@google.com * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 2612870Sgabeblack@google.com * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 2712870Sgabeblack@google.com * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 2812870Sgabeblack@google.com */ 2912870Sgabeblack@google.com 3013099Sgabeblack@google.com#ifndef DATABLOCK_H 3112870Sgabeblack@google.com#define DATABLOCK_H 3213099Sgabeblack@google.com 3313082Sgabeblack@google.com#include "mem/ruby/common/Global.hh" 3412870Sgabeblack@google.com#include "mem/ruby/system/System.hh" 3512870Sgabeblack@google.com#include "mem/gems_common/Vector.hh" 3612870Sgabeblack@google.com 3712870Sgabeblack@google.comclass DataBlock { 3812870Sgabeblack@google.com public: 3912870Sgabeblack@google.com // Constructors 4012870Sgabeblack@google.com DataBlock() {alloc();} 4112870Sgabeblack@google.com DataBlock(const DataBlock & cp) { 4213099Sgabeblack@google.com m_data = new uint8[RubySystem::getBlockSizeBytes()]; 4313099Sgabeblack@google.com memcpy(m_data, cp.m_data, RubySystem::getBlockSizeBytes()); 4413099Sgabeblack@google.com m_alloc = true; 4513099Sgabeblack@google.com } 4613099Sgabeblack@google.com 4713099Sgabeblack@google.com // Destructor 4813099Sgabeblack@google.com ~DataBlock() { 4912870Sgabeblack@google.com if(m_alloc) { 5012870Sgabeblack@google.com delete [] m_data; 5112870Sgabeblack@google.com } 5212870Sgabeblack@google.com } 5312870Sgabeblack@google.com 5413082Sgabeblack@google.com DataBlock& operator=(const DataBlock& obj); 5513082Sgabeblack@google.com 5613082Sgabeblack@google.com // Public Methods 5713082Sgabeblack@google.com void assign(uint8* data); 5813082Sgabeblack@google.com 5913082Sgabeblack@google.com void clear(); 6013082Sgabeblack@google.com uint8 getByte(int whichByte) const; 6113082Sgabeblack@google.com const uint8* getData(int offset, int len) const; 6213082Sgabeblack@google.com void setByte(int whichByte, uint8 data); 6313082Sgabeblack@google.com void setData(uint8* data, int offset, int len); 6413082Sgabeblack@google.com void copyPartial(const DataBlock & dblk, int offset, int len); 65 bool equal(const DataBlock& obj) const; 66 void print(ostream& out) const; 67 68private: 69 void alloc(); 70 // Data Members (m_ prefix) 71 uint8* m_data; 72 bool m_alloc; 73}; 74 75// Output operator declaration 76ostream& operator<<(ostream& out, const DataBlock& obj); 77 78bool operator==(const DataBlock& obj1, const DataBlock& obj2); 79 80// inline functions for speed 81 82inline 83void DataBlock::assign(uint8* data) 84{ 85 delete [] m_data; 86 m_data = data; 87 m_alloc = false; 88} 89 90inline 91void DataBlock::alloc() 92{ 93 m_data = new uint8[RubySystem::getBlockSizeBytes()]; 94 m_alloc = true; 95 clear(); 96} 97 98inline 99void DataBlock::clear() 100{ 101 memset(m_data, 0, RubySystem::getBlockSizeBytes()); 102} 103 104inline 105bool DataBlock::equal(const DataBlock& obj) const 106{ 107 return !memcmp(m_data, obj.m_data, RubySystem::getBlockSizeBytes()); 108} 109 110inline 111void DataBlock::print(ostream& out) const 112{ 113 int size = RubySystem::getBlockSizeBytes(); 114 out << "[ "; 115 for (int i = 0; i < size; i++) { 116 out << setw(2) << setfill('0') << hex << "0x" << (int)m_data[i] << " "; 117 out << setfill(' '); 118 } 119 out << dec << "]" << flush; 120} 121 122inline 123uint8 DataBlock::getByte(int whichByte) const 124{ 125 return m_data[whichByte]; 126} 127 128inline 129const uint8* DataBlock::getData(int offset, int len) const 130{ 131 assert(offset + len <= RubySystem::getBlockSizeBytes()); 132 return &m_data[offset]; 133} 134 135inline 136void DataBlock::setByte(int whichByte, uint8 data) 137{ 138 m_data[whichByte] = data; 139} 140 141inline 142void DataBlock::setData(uint8* data, int offset, int len) 143{ 144 assert(offset + len <= RubySystem::getBlockSizeBytes()); 145 memcpy(&m_data[offset], data, len); 146} 147 148inline 149void DataBlock::copyPartial(const DataBlock & dblk, int offset, int len) 150{ 151 setData(&dblk.m_data[offset], offset, len); 152} 153 154// ******************* Definitions ******************* 155 156// Output operator definition 157extern inline 158ostream& operator<<(ostream& out, const DataBlock& obj) 159{ 160 obj.print(out); 161 out << flush; 162 return out; 163} 164 165extern inline 166bool operator==(const DataBlock& obj1,const DataBlock& obj2) 167{ 168 return (obj1.equal(obj2)); 169} 170 171#endif //DATABLOCK_H 172