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;

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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 //Constructor
68 SimpleRenameMap() {};
69
70 /** Destructor. */
71 ~SimpleRenameMap();
72
73 void init(unsigned _numLogicalIntRegs,
74 unsigned _numPhysicalIntRegs,
75 PhysRegIndex &_int_reg_start,
76
77 unsigned _numLogicalFloatRegs,
78 unsigned _numPhysicalFloatRegs,
79 PhysRegIndex &_float_reg_start,
80
81 unsigned _numMiscRegs,
82
83 RegIndex _intZeroReg,
84 RegIndex _floatZeroReg,
85
86 int id,
87 bool bindRegs);
88
89 void setFreeList(SimpleFreeList *fl_ptr);
90
91 //Tell rename map to get a free physical register for a given
92 //architected register. Not sure it should have a return value,
93 //but perhaps it should have some sort of fault in case there are
94 //no free registers.
95 RenameInfo rename(RegIndex arch_reg);
96

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146 PhysRegIndex physical_reg;
147 bool valid;
148
149 RenameEntry()
150 : physical_reg(0), valid(false)
151 { }
152 };
153
154 //Change this to private
155 private:
156 /** Integer rename map. */
157 std::vector<RenameEntry> intRenameMap;
158
159 /** Floating point rename map. */
160 std::vector<RenameEntry> floatRenameMap;
161
162 private:
163 /** Free list interface. */
164 SimpleFreeList *freeList;
165};
166
167#endif //__CPU_O3_RENAME_MAP_HH__