src/Sim/Predictor/BPred/GlobalHistory.cpp

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 #include <pch.h>
00033 
00034 #include "Sim/Predictor/BPred/GlobalHistory.h"
00035 #include "Utility/RuntimeError.h"
00036 
00037 using namespace Onikiri;
00038 
00039 GlobalHistory::GlobalHistory()  :
00040     m_checkpointMaster(0)
00041 {
00042 }
00043 
00044 GlobalHistory::~GlobalHistory()
00045 {
00046     ReleaseParam();
00047 }
00048 
00049 void GlobalHistory::Initialize(InitPhase phase)
00050 {
00051     if(phase == INIT_POST_CONNECTION){
00052         CheckNodeInitialized( "checkpointMaster", m_checkpointMaster );
00053 
00054         m_globalHistory.Initialize(
00055             m_checkpointMaster,
00056             CheckpointMaster::SLOT_FETCH
00057         );
00058         *m_globalHistory = 0;
00059     }
00060 }
00061 
00062 // dirpred \\ bpred 
00063 void GlobalHistory::Predicted(bool taken)
00064 {
00065     *m_globalHistory = ( (*m_globalHistory) << 1 ) | (taken ? 1 : 0);
00066 }
00067 
00068 // RetireTaken/NotTaken bpred 
00069 // GlobalHistoryXV\/\~XosAタ
00070 void GlobalHistory::Retired(bool taken)
00071 {
00072 }
00073 
00074 // rbg(1V)(I)X
00075 // \~X\wKg
00076 void GlobalHistory::SetLeastSignificantBit(bool taken)
00077 {
00078     *m_globalHistory = shttl::deposit(*m_globalHistory, 0, 1, taken);
00079 }
00080 
00081 // GlobalHistory
00082 u64 GlobalHistory::GetHistory()
00083 {
00084     return *m_globalHistory;
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