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Diffstat (limited to 'src/mem/ruby/system/TBETable.hh')
-rw-r--r-- | src/mem/ruby/system/TBETable.hh | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/src/mem/ruby/system/TBETable.hh b/src/mem/ruby/system/TBETable.hh new file mode 100644 index 000000000..aa7e0df6e --- /dev/null +++ b/src/mem/ruby/system/TBETable.hh @@ -0,0 +1,165 @@ + +/* + * 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. + */ + +/* + * TBETable.h + * + * Description: + * + * $Id$ + * + */ + +#ifndef TBETABLE_H +#define TBETABLE_H + +#include "mem/ruby/common/Global.hh" +#include "mem/gems_common/Map.hh" +#include "mem/ruby/common/Address.hh" +#include "mem/ruby/profiler/Profiler.hh" +#include "mem/ruby/slicc_interface/AbstractChip.hh" +#include "mem/ruby/system/System.hh" + +template<class ENTRY> +class TBETable { +public: + + // Constructors + TBETable(AbstractChip* chip_ptr); + + // Destructor + //~TBETable(); + + // Public Methods + + static void printConfig(ostream& out) { out << "TBEs_per_TBETable: " << NUMBER_OF_TBES << endl; } + + bool isPresent(const Address& address) const; + void allocate(const Address& address); + void deallocate(const Address& address); + bool areNSlotsAvailable(int n) const { return (NUMBER_OF_TBES - m_map.size()) >= n; } + + ENTRY& lookup(const Address& address); + const ENTRY& lookup(const Address& address) const; + + // Print cache contents + void print(ostream& out) const; +private: + // Private Methods + + // Private copy constructor and assignment operator + TBETable(const TBETable& obj); + TBETable& operator=(const TBETable& obj); + + // Data Members (m_prefix) + Map<Address, ENTRY> m_map; + AbstractChip* m_chip_ptr; +}; + +// Output operator declaration +//ostream& operator<<(ostream& out, const TBETable<ENTRY>& obj); + +// ******************* Definitions ******************* + +// Output operator definition +template<class ENTRY> +extern inline +ostream& operator<<(ostream& out, const TBETable<ENTRY>& obj) +{ + obj.print(out); + out << flush; + return out; +} + + +// **************************************************************** + +template<class ENTRY> +extern inline +TBETable<ENTRY>::TBETable(AbstractChip* chip_ptr) +{ + m_chip_ptr = chip_ptr; +} + +// PUBLIC METHODS + +// tests to see if an address is present in the cache +template<class ENTRY> +extern inline +bool TBETable<ENTRY>::isPresent(const Address& address) const +{ + assert(address == line_address(address)); + assert(m_map.size() <= NUMBER_OF_TBES); + return m_map.exist(address); +} + +template<class ENTRY> +extern inline +void TBETable<ENTRY>::allocate(const Address& address) +{ + assert(isPresent(address) == false); + assert(m_map.size() < NUMBER_OF_TBES); + g_system_ptr->getProfiler()->L2tbeUsageSample(m_map.size()); + m_map.add(address, ENTRY()); +} + +template<class ENTRY> +extern inline +void TBETable<ENTRY>::deallocate(const Address& address) +{ + assert(isPresent(address) == true); + assert(m_map.size() > 0); + m_map.erase(address); +} + +// looks an address up in the cache +template<class ENTRY> +extern inline +ENTRY& TBETable<ENTRY>::lookup(const Address& address) +{ + assert(isPresent(address) == true); + return m_map.lookup(address); +} + +// looks an address up in the cache +template<class ENTRY> +extern inline +const ENTRY& TBETable<ENTRY>::lookup(const Address& address) const +{ + assert(isPresent(address) == true); + return m_map.lookup(address); +} + +template<class ENTRY> +extern inline +void TBETable<ENTRY>::print(ostream& out) const +{ +} + +#endif //TBETABLE_H |