src/Sim/Predictor/HitMissPred/CounterBasedHitMissPred.h

説明を見る。
00001 // 
00002 // Copyright (c) 2005-2008 Kenichi Watanabe.
00003 // Copyright (c) 2005-2008 Yasuhiro Watari.
00004 // Copyright (c) 2005-2008 Hironori Ichibayashi.
00005 // Copyright (c) 2008-2009 Kazuo Horio.
00006 // Copyright (c) 2009-2013 Naruki Kurata.
00007 // Copyright (c) 2005-2013 Ryota Shioya.
00008 // Copyright (c) 2005-2013 Masahiro Goshima.
00009 // 
00010 // This software is provided 'as-is', without any express or implied
00011 // warranty. In no event will the authors be held liable for any damages
00012 // arising from the use of this software.
00013 // 
00014 // Permission is granted to anyone to use this software for any purpose,
00015 // including commercial applications, and to alter it and redistribute it
00016 // freely, subject to the following restrictions:
00017 // 
00018 // 1. The origin of this software must not be misrepresented; you must not
00019 // claim that you wrote the original software. If you use this software
00020 // in a product, an acknowledgment in the product documentation would be
00021 // appreciated but is not required.
00022 // 
00023 // 2. Altered source versions must be plainly marked as such, and must not be
00024 // misrepresented as being the original software.
00025 // 
00026 // 3. This notice may not be removed or altered from any source
00027 // distribution.
00028 // 
00029 // 
00030 
00031 
00032 //
00033 // Counter based hit/miss predictor 
00034 //
00035 
00036 #ifndef SIM_PREDICTOR_HIT_MISS_PRED_COUNTER_BASED_HIT_MISS_PRED_H
00037 #define SIM_PREDICTOR_HIT_MISS_PRED_COUNTER_BASED_HIT_MISS_PRED_H
00038 
00039 #include "Types.h"
00040 #include "Lib/shttl/counter_array.h"
00041 #include "Env/Param/ParamExchange.h"
00042 
00043 #include "Sim/Foundation/Resource/ResourceNode.h"
00044 #include "Sim/Predictor/HitMissPred/HitMissPredIF.h"
00045 
00046 namespace Onikiri
00047 {
00048     class CounterBasedHitMissPred : 
00049         public HitMissPredIF,
00050         public PhysicalResourceNode
00051     {
00052     public:
00053         BEGIN_PARAM_MAP( GetParamPath() )
00054             PARAM_ENTRY("@CounterBits", m_counterBits)
00055             PARAM_ENTRY("@EntryBits",   m_entryBits)
00056             PARAM_ENTRY("@AddressXORConvolute", m_addrXORConvolute)
00057         END_PARAM_MAP()
00058 
00059         BEGIN_RESOURCE_MAP()
00060         END_RESOURCE_MAP()
00061 
00062         CounterBasedHitMissPred();
00063         ~CounterBasedHitMissPred();
00064 
00065         void Initialize(InitPhase phase);
00066 
00067         virtual bool Predict( OpIterator op );
00068         virtual void Finished( OpIterator op, bool hit ){};
00069         virtual void Commit( OpIterator op, bool hit );
00070 
00071     private:
00072         int m_counterBits;
00073         int m_entryBits;
00074         bool m_addrXORConvolute;
00075         shttl::counter_array<u8> m_table;
00076 
00077         u64 ConvolutePCToArrayIndex(PC pc);
00078         u64 MaskPCToArrayIndex(PC pc);
00079         u64 GetArrayIndex(PC pc);
00080     };
00081 
00082 } // namespace Onikiri
00083 
00084 #endif  // SIM_PREDICTOR_HIT_MISS_PRED_COUNTER_BASED_HIT_MISS_PRED_H
00085 

Onikiri2に対してTue Jun 18 14:34:25 2013に生成されました。  doxygen 1.4.7