1/*
2 * Copyright (c) 2004-2005 The Regents of The University of Michigan
3 * Copyright (c) 2013 Advanced Micro Devices, Inc.
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are
8 * met: redistributions of source code must retain the above copyright

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99
100 floatMap.init(TheISA::NumFloatRegs, &(freeList->floatList), _floatZeroReg);
101
102 ccMap.init(TheISA::NumCCRegs, &(freeList->ccList), (RegIndex)-1);
103}
104
105
106UnifiedRenameMap::RenameInfo
107UnifiedRenameMap::rename(RegIndex arch_reg)
108{
109 RegIndex rel_arch_reg;
110
111 switch (regIdxToClass(arch_reg, &rel_arch_reg)) {
112 case IntRegClass:
113 return renameInt(rel_arch_reg);
114
115 case FloatRegClass:
116 return renameFloat(rel_arch_reg);
117
118 case CCRegClass:
119 return renameCC(rel_arch_reg);
120
121 case MiscRegClass:
122 return renameMisc(rel_arch_reg);
123
124 default:
125 panic("rename rename(): unknown reg class %s\n",
126 RegClassStrings[regIdxToClass(arch_reg)]);
127 }
128}
129
130
131PhysRegIndex
132UnifiedRenameMap::lookup(RegIndex arch_reg) const
133{
134 RegIndex rel_arch_reg;
135
136 switch (regIdxToClass(arch_reg, &rel_arch_reg)) {
137 case IntRegClass:
138 return lookupInt(rel_arch_reg);
139
140 case FloatRegClass:
141 return lookupFloat(rel_arch_reg);
142
143 case CCRegClass:
144 return lookupCC(rel_arch_reg);
145
146 case MiscRegClass:
147 return lookupMisc(rel_arch_reg);
148
149 default:
150 panic("rename lookup(): unknown reg class %s\n",
151 RegClassStrings[regIdxToClass(arch_reg)]);
152 }
153}
154
155void
156UnifiedRenameMap::setEntry(RegIndex arch_reg, PhysRegIndex phys_reg)
157{
158 RegIndex rel_arch_reg;
159
160 switch (regIdxToClass(arch_reg, &rel_arch_reg)) {
161 case IntRegClass:
162 return setIntEntry(rel_arch_reg, phys_reg);
163
164 case FloatRegClass:
165 return setFloatEntry(rel_arch_reg, phys_reg);
166
167 case CCRegClass:
168 return setCCEntry(rel_arch_reg, phys_reg);
169
170 case MiscRegClass:
171 // Misc registers do not actually rename, so don't change
172 // their mappings. We end up here when a commit or squash
173 // tries to update or undo a hardwired misc reg nmapping,
174 // which should always be setting it to what it already is.
175 assert(phys_reg == lookupMisc(rel_arch_reg));
176 return;
177
178 default:
179 panic("rename setEntry(): unknown reg class %s\n",
180 RegClassStrings[regIdxToClass(arch_reg)]);
181 }
182}