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 #ifndef __PHT_H__ 00033 #define __PHT_H__ 00034 00035 #include "Lib/shttl/counter_array.h" 00036 #include "Env/Param/ParamExchange.h" 00037 #include "Sim/Foundation/Resource/ResourceNode.h" 00038 00039 namespace Onikiri { 00040 00041 00042 // Pattern History Table 00043 class PHT : public PhysicalResourceNode 00044 { 00045 private: 00046 int m_counterBits; 00047 int m_entryBits; 00048 shttl::counter_array<u8> m_table; 00049 00050 public: 00051 BEGIN_PARAM_MAP( GetParamPath() ) 00052 PARAM_ENTRY("@CounterBits", m_counterBits) 00053 PARAM_ENTRY("@EntryBits", m_entryBits) 00054 END_PARAM_MAP() 00055 00056 BEGIN_RESOURCE_MAP() 00057 END_RESOURCE_MAP() 00058 00059 PHT(); 00060 ~PHT(); 00061 00062 void Initialize(InitPhase phase); 00063 00064 // PHT‚Ìindex‚ªTaken/NotTaken‚¾‚Á‚½‚±‚Æ‚ðUpdate‚·‚é 00065 void Update(int index, bool taken); 00066 00067 // PHT‚ÌindexƒGƒ“ƒgƒŠ‚Ì—\‘ªŒ‹‰Ê‚ð•Ô‚· 00068 bool Predict(int index); 00069 00070 int GetIndexBitSize() 00071 { 00072 return m_entryBits; 00073 } 00074 00075 }; 00076 00077 }; // namespace Onikiri 00078 00079 #endif // __PHT_H__