rename_map.hh (2654:9559cfa91b9d) | rename_map.hh (2665:a124942bacb8) |
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1/* 2 * Copyright (c) 2004-2005 The Regents of The University of Michigan 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; --- 10 unchanged lines hidden (view full) --- 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. | 1/* 2 * Copyright (c) 2004-2005 The Regents of The University of Michigan 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; --- 10 unchanged lines hidden (view full) --- 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 * Authors: Kevin Lim |
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27 */ 28 29// Todo: Create destructor. 30// Have it so that there's a more meaningful name given to the variable 31// that marks the beginning of the FP registers. 32 | 29 */ 30 31// Todo: Create destructor. 32// Have it so that there's a more meaningful name given to the variable 33// that marks the beginning of the FP registers. 34 |
33#ifndef __CPU_O3_RENAME_MAP_HH__ 34#define __CPU_O3_RENAME_MAP_HH__ | 35#ifndef __CPU_O3_CPU_RENAME_MAP_HH__ 36#define __CPU_O3_CPU_RENAME_MAP_HH__ |
35 36#include <iostream> 37#include <utility> 38#include <vector> 39 40#include "cpu/o3/free_list.hh" 41//For RegIndex 42#include "arch/isa_traits.hh" --- 15 unchanged lines hidden (view full) --- 58 * return the physical register that a logical register has been 59 * renamed to, and the previous physical register that the same 60 * logical register was previously mapped to. 61 */ 62 typedef std::pair<PhysRegIndex, PhysRegIndex> RenameInfo; 63 64 public: 65 //Constructor | 37 38#include <iostream> 39#include <utility> 40#include <vector> 41 42#include "cpu/o3/free_list.hh" 43//For RegIndex 44#include "arch/isa_traits.hh" --- 15 unchanged lines hidden (view full) --- 60 * return the physical register that a logical register has been 61 * renamed to, and the previous physical register that the same 62 * logical register was previously mapped to. 63 */ 64 typedef std::pair<PhysRegIndex, PhysRegIndex> RenameInfo; 65 66 public: 67 //Constructor |
66 SimpleRenameMap() {}; | 68 SimpleRenameMap(unsigned _numLogicalIntRegs, 69 unsigned _numPhysicalIntRegs, 70 unsigned _numLogicalFloatRegs, 71 unsigned _numPhysicalFloatRegs, 72 unsigned _numMiscRegs, 73 RegIndex _intZeroReg, 74 RegIndex _floatZeroReg); |
67 68 /** Destructor. */ 69 ~SimpleRenameMap(); 70 | 75 76 /** Destructor. */ 77 ~SimpleRenameMap(); 78 |
71 void init(unsigned _numLogicalIntRegs, 72 unsigned _numPhysicalIntRegs, 73 PhysRegIndex &_int_reg_start, 74 75 unsigned _numLogicalFloatRegs, 76 unsigned _numPhysicalFloatRegs, 77 PhysRegIndex &_float_reg_start, 78 79 unsigned _numMiscRegs, 80 81 RegIndex _intZeroReg, 82 RegIndex _floatZeroReg, 83 84 int id, 85 bool bindRegs); 86 | |
87 void setFreeList(SimpleFreeList *fl_ptr); 88 89 //Tell rename map to get a free physical register for a given 90 //architected register. Not sure it should have a return value, 91 //but perhaps it should have some sort of fault in case there are 92 //no free registers. 93 RenameInfo rename(RegIndex arch_reg); 94 95 PhysRegIndex lookup(RegIndex phys_reg); 96 | 79 void setFreeList(SimpleFreeList *fl_ptr); 80 81 //Tell rename map to get a free physical register for a given 82 //architected register. Not sure it should have a return value, 83 //but perhaps it should have some sort of fault in case there are 84 //no free registers. 85 RenameInfo rename(RegIndex arch_reg); 86 87 PhysRegIndex lookup(RegIndex phys_reg); 88 |
89 bool isReady(PhysRegIndex arch_reg); 90 |
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97 /** 98 * Marks the given register as ready, meaning that its value has been 99 * calculated and written to the register file. 100 * @param ready_reg The index of the physical register that is now ready. 101 */ | 91 /** 92 * Marks the given register as ready, meaning that its value has been 93 * calculated and written to the register file. 94 * @param ready_reg The index of the physical register that is now ready. 95 */ |
96 void markAsReady(PhysRegIndex ready_reg); 97 |
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102 void setEntry(RegIndex arch_reg, PhysRegIndex renamed_reg); 103 | 98 void setEntry(RegIndex arch_reg, PhysRegIndex renamed_reg); 99 |
100 void squash(std::vector<RegIndex> freed_regs, 101 std::vector<UnmapInfo> unmaps); 102 |
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104 int numFreeEntries(); 105 106 private: | 103 int numFreeEntries(); 104 105 private: |
107 /** Rename Map ID */ 108 int id; 109 | |
110 /** Number of logical integer registers. */ 111 int numLogicalIntRegs; 112 113 /** Number of physical integer registers. */ 114 int numPhysicalIntRegs; 115 116 /** Number of logical floating point registers. */ 117 int numLogicalFloatRegs; --- 26 unchanged lines hidden (view full) --- 144 PhysRegIndex physical_reg; 145 bool valid; 146 147 RenameEntry() 148 : physical_reg(0), valid(false) 149 { } 150 }; 151 | 106 /** Number of logical integer registers. */ 107 int numLogicalIntRegs; 108 109 /** Number of physical integer registers. */ 110 int numPhysicalIntRegs; 111 112 /** Number of logical floating point registers. */ 113 int numLogicalFloatRegs; --- 26 unchanged lines hidden (view full) --- 140 PhysRegIndex physical_reg; 141 bool valid; 142 143 RenameEntry() 144 : physical_reg(0), valid(false) 145 { } 146 }; 147 |
152 //Change this to private 153 private: | |
154 /** Integer rename map. */ | 148 /** Integer rename map. */ |
155 std::vector<RenameEntry> intRenameMap; | 149 RenameEntry *intRenameMap; |
156 157 /** Floating point rename map. */ | 150 151 /** Floating point rename map. */ |
158 std::vector<RenameEntry> floatRenameMap; | 152 RenameEntry *floatRenameMap; |
159 | 153 |
160 private: | |
161 /** Free list interface. */ 162 SimpleFreeList *freeList; | 154 /** Free list interface. */ 155 SimpleFreeList *freeList; |
156 157 // Might want to make all these scoreboards into one large scoreboard. 158 159 /** Scoreboard of physical integer registers, saying whether or not they 160 * are ready. 161 */ 162 std::vector<bool> intScoreboard; 163 164 /** Scoreboard of physical floating registers, saying whether or not they 165 * are ready. 166 */ 167 std::vector<bool> floatScoreboard; 168 169 /** Scoreboard of miscellaneous registers, saying whether or not they 170 * are ready. 171 */ 172 std::vector<bool> miscScoreboard; |
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163}; 164 | 173}; 174 |
165#endif //__CPU_O3_RENAME_MAP_HH__ | 175#endif //__CPU_O3_CPU_RENAME_MAP_HH__ |