TBETable.hh revision 7039
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#ifndef __MEM_RUBY_SYSTEM_TBETABLE_HH__ 30#define __MEM_RUBY_SYSTEM_TBETABLE_HH__ 31 32#include "mem/gems_common/Map.hh" 33#include "mem/ruby/common/Address.hh" 34#include "mem/ruby/common/Global.hh" 35#include "mem/ruby/profiler/Profiler.hh" 36#include "mem/ruby/system/System.hh" 37 38template<class ENTRY> 39class TBETable 40{ 41 public: 42 TBETable(int number_of_TBEs) 43 : m_number_of_TBEs(number_of_TBEs) 44 { 45 } 46 47 void 48 printConfig(ostream& out) 49 { 50 out << "TBEs_per_TBETable: " << m_number_of_TBEs << endl; 51 } 52 53 bool isPresent(const Address& address) const; 54 void allocate(const Address& address); 55 void deallocate(const Address& address); 56 bool 57 areNSlotsAvailable(int n) const 58 { 59 return (m_number_of_TBEs - m_map.size()) >= n; 60 } 61 62 ENTRY& lookup(const Address& address); 63 const ENTRY& lookup(const Address& address) const; 64 65 // Print cache contents 66 void print(ostream& out) const; 67 68 private: 69 // Private copy constructor and assignment operator 70 TBETable(const TBETable& obj); 71 TBETable& operator=(const TBETable& obj); 72 73 // Data Members (m_prefix) 74 Map<Address, ENTRY> m_map; 75 76 private: 77 int m_number_of_TBEs; 78}; 79 80template<class ENTRY> 81inline ostream& 82operator<<(ostream& out, const TBETable<ENTRY>& obj) 83{ 84 obj.print(out); 85 out << flush; 86 return out; 87} 88 89template<class ENTRY> 90inline bool 91TBETable<ENTRY>::isPresent(const Address& address) const 92{ 93 assert(address == line_address(address)); 94 assert(m_map.size() <= m_number_of_TBEs); 95 return m_map.exist(address); 96} 97 98template<class ENTRY> 99inline void 100TBETable<ENTRY>::allocate(const Address& address) 101{ 102 assert(isPresent(address) == false); 103 assert(m_map.size() < m_number_of_TBEs); 104 m_map.add(address, ENTRY()); 105} 106 107template<class ENTRY> 108inline void 109TBETable<ENTRY>::deallocate(const Address& address) 110{ 111 assert(isPresent(address) == true); 112 assert(m_map.size() > 0); 113 m_map.erase(address); 114} 115 116// looks an address up in the cache 117template<class ENTRY> 118inline ENTRY& 119TBETable<ENTRY>::lookup(const Address& address) 120{ 121 assert(isPresent(address) == true); 122 return m_map.lookup(address); 123} 124 125// looks an address up in the cache 126template<class ENTRY> 127inline const ENTRY& 128TBETable<ENTRY>::lookup(const Address& address) const 129{ 130 assert(isPresent(address) == true); 131 return m_map.lookup(address); 132} 133 134template<class ENTRY> 135inline void 136TBETable<ENTRY>::print(ostream& out) const 137{ 138} 139 140#endif // __MEM_RUBY_SYSTEM_TBETABLE_HH__ 141