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; --- 50 unchanged lines hidden (view full) --- 59 * Pair of a physical register and a physical register. Used to 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 /** Default constructor. init() must be called prior to use. */ 68 SimpleRenameMap() {}; |
69 70 /** Destructor. */ 71 ~SimpleRenameMap(); 72 |
73 /** Initializes rename map with given parameters. */ |
74 void init(unsigned _numLogicalIntRegs, 75 unsigned _numPhysicalIntRegs, 76 PhysRegIndex &_int_reg_start, 77 78 unsigned _numLogicalFloatRegs, 79 unsigned _numPhysicalFloatRegs, 80 PhysRegIndex &_float_reg_start, 81 82 unsigned _numMiscRegs, 83 84 RegIndex _intZeroReg, 85 RegIndex _floatZeroReg, 86 87 int id, 88 bool bindRegs); 89 |
90 /** Sets the free list used with this rename map. */ |
91 void setFreeList(SimpleFreeList *fl_ptr); 92 93 //Tell rename map to get a free physical register for a given 94 //architected register. Not sure it should have a return value, 95 //but perhaps it should have some sort of fault in case there are 96 //no free registers. 97 RenameInfo rename(RegIndex arch_reg); 98 --- 49 unchanged lines hidden (view full) --- 148 PhysRegIndex physical_reg; 149 bool valid; 150 151 RenameEntry() 152 : physical_reg(0), valid(false) 153 { } 154 }; 155 |
156 private: 157 /** Integer rename map. */ 158 std::vector<RenameEntry> intRenameMap; 159 160 /** Floating point rename map. */ 161 std::vector<RenameEntry> floatRenameMap; 162 163 private: 164 /** Free list interface. */ 165 SimpleFreeList *freeList; 166}; 167 168#endif //__CPU_O3_RENAME_MAP_HH__ |