rename_map.hh (2632:1bb2f91485ea) | rename_map.hh (2654:9559cfa91b9d) |
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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; --- 16 unchanged lines hidden (view full) --- 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 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 | 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; --- 16 unchanged lines hidden (view full) --- 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 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 |
33#ifndef __CPU_O3_CPU_RENAME_MAP_HH__ 34#define __CPU_O3_CPU_RENAME_MAP_HH__ | 33#ifndef __CPU_O3_RENAME_MAP_HH__ 34#define __CPU_O3_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 | 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 |
66 SimpleRenameMap(unsigned _numLogicalIntRegs, 67 unsigned _numPhysicalIntRegs, 68 unsigned _numLogicalFloatRegs, 69 unsigned _numPhysicalFloatRegs, 70 unsigned _numMiscRegs, 71 RegIndex _intZeroReg, 72 RegIndex _floatZeroReg); | 66 SimpleRenameMap() {}; |
73 74 /** Destructor. */ 75 ~SimpleRenameMap(); 76 | 67 68 /** Destructor. */ 69 ~SimpleRenameMap(); 70 |
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 |
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77 void setFreeList(SimpleFreeList *fl_ptr); 78 79 //Tell rename map to get a free physical register for a given 80 //architected register. Not sure it should have a return value, 81 //but perhaps it should have some sort of fault in case there are 82 //no free registers. 83 RenameInfo rename(RegIndex arch_reg); 84 85 PhysRegIndex lookup(RegIndex phys_reg); 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 |
87 bool isReady(PhysRegIndex arch_reg); 88 | |
89 /** 90 * Marks the given register as ready, meaning that its value has been 91 * calculated and written to the register file. 92 * @param ready_reg The index of the physical register that is now ready. 93 */ | 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 */ |
94 void markAsReady(PhysRegIndex ready_reg); 95 | |
96 void setEntry(RegIndex arch_reg, PhysRegIndex renamed_reg); 97 | 102 void setEntry(RegIndex arch_reg, PhysRegIndex renamed_reg); 103 |
98 void squash(std::vector<RegIndex> freed_regs, 99 std::vector<UnmapInfo> unmaps); 100 | |
101 int numFreeEntries(); 102 103 private: | 104 int numFreeEntries(); 105 106 private: |
107 /** Rename Map ID */ 108 int id; 109 |
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104 /** Number of logical integer registers. */ 105 int numLogicalIntRegs; 106 107 /** Number of physical integer registers. */ 108 int numPhysicalIntRegs; 109 110 /** Number of logical floating point registers. */ 111 int numLogicalFloatRegs; --- 26 unchanged lines hidden (view full) --- 138 PhysRegIndex physical_reg; 139 bool valid; 140 141 RenameEntry() 142 : physical_reg(0), valid(false) 143 { } 144 }; 145 | 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 |
152 //Change this to private 153 private: |
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146 /** Integer rename map. */ | 154 /** Integer rename map. */ |
147 RenameEntry *intRenameMap; | 155 std::vector<RenameEntry> intRenameMap; |
148 149 /** Floating point rename map. */ | 156 157 /** Floating point rename map. */ |
150 RenameEntry *floatRenameMap; | 158 std::vector<RenameEntry> floatRenameMap; |
151 | 159 |
160 private: |
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152 /** Free list interface. */ 153 SimpleFreeList *freeList; | 161 /** Free list interface. */ 162 SimpleFreeList *freeList; |
154 155 // Might want to make all these scoreboards into one large scoreboard. 156 157 /** Scoreboard of physical integer registers, saying whether or not they 158 * are ready. 159 */ 160 std::vector<bool> intScoreboard; 161 162 /** Scoreboard of physical floating registers, saying whether or not they 163 * are ready. 164 */ 165 std::vector<bool> floatScoreboard; 166 167 /** Scoreboard of miscellaneous registers, saying whether or not they 168 * are ready. 169 */ 170 std::vector<bool> miscScoreboard; | |
171}; 172 | 163}; 164 |
173#endif //__CPU_O3_CPU_RENAME_MAP_HH__ | 165#endif //__CPU_O3_RENAME_MAP_HH__ |