regfile.hh (10934:5af8f40d8f2c) regfile.hh (10935:acd48ddd725f)
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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51class PhysRegFile
52{
53 private:
54
55 typedef TheISA::IntReg IntReg;
56 typedef TheISA::FloatReg FloatReg;
57 typedef TheISA::FloatRegBits FloatRegBits;
58 typedef TheISA::CCReg CCReg;
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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51class PhysRegFile
52{
53 private:
54
55 typedef TheISA::IntReg IntReg;
56 typedef TheISA::FloatReg FloatReg;
57 typedef TheISA::FloatRegBits FloatRegBits;
58 typedef TheISA::CCReg CCReg;
59 typedef TheISA::VectorReg VectorReg;
60
61 typedef union {
62 FloatReg d;
63 FloatRegBits q;
64 } PhysFloatReg;
65
66 /** Integer register file. */
67 std::vector<IntReg> intRegFile;
68
69 /** Floating point register file. */
70 std::vector<PhysFloatReg> floatRegFile;
71
72 /** Condition-code register file. */
73 std::vector<CCReg> ccRegFile;
74
59
60 typedef union {
61 FloatReg d;
62 FloatRegBits q;
63 } PhysFloatReg;
64
65 /** Integer register file. */
66 std::vector<IntReg> intRegFile;
67
68 /** Floating point register file. */
69 std::vector<PhysFloatReg> floatRegFile;
70
71 /** Condition-code register file. */
72 std::vector<CCReg> ccRegFile;
73
75 /** Vector register file. */
76 std::vector<VectorReg> vectorRegFile;
77
78 /**
79 * The first floating-point physical register index. The physical
80 * register file has a single continuous index space, with the
81 * initial indices mapping to the integer registers, followed
82 * immediately by the floating-point registers. Thus the first
83 * floating-point index is equal to the number of integer
84 * registers.
85 *

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92 unsigned baseFloatRegIndex;
93
94 /**
95 * The first condition-code physical register index. The
96 * condition-code registers follow the floating-point registers.
97 */
98 unsigned baseCCRegIndex;
99
74 /**
75 * The first floating-point physical register index. The physical
76 * register file has a single continuous index space, with the
77 * initial indices mapping to the integer registers, followed
78 * immediately by the floating-point registers. Thus the first
79 * floating-point index is equal to the number of integer
80 * registers.
81 *

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88 unsigned baseFloatRegIndex;
89
90 /**
91 * The first condition-code physical register index. The
92 * condition-code registers follow the floating-point registers.
93 */
94 unsigned baseCCRegIndex;
95
100 /**
101 * The first vector physical register index. The vector registers follow
102 * the condition-code registers.
103 */
104 unsigned baseVectorRegIndex;
105
106 /** Total number of physical registers. */
107 unsigned totalNumRegs;
108
109 public:
110 /**
111 * Constructs a physical register file with the specified amount of
112 * integer and floating point registers.
113 */
114 PhysRegFile(unsigned _numPhysicalIntRegs,
115 unsigned _numPhysicalFloatRegs,
96 /** Total number of physical registers. */
97 unsigned totalNumRegs;
98
99 public:
100 /**
101 * Constructs a physical register file with the specified amount of
102 * integer and floating point registers.
103 */
104 PhysRegFile(unsigned _numPhysicalIntRegs,
105 unsigned _numPhysicalFloatRegs,
116 unsigned _numPhysicalCCRegs,
117 unsigned _numPhysicalVectorRegs);
106 unsigned _numPhysicalCCRegs);
118
119 /**
120 * Destructor to free resources
121 */
122 ~PhysRegFile() {}
123
124 /** Initialize the free list */
125 void initFreeList(UnifiedFreeList *freeList);
126
127 /** @return the number of integer physical registers. */
128 unsigned numIntPhysRegs() const { return baseFloatRegIndex; }
129
130 /** @return the number of floating-point physical registers. */
131 unsigned numFloatPhysRegs() const
132 { return baseCCRegIndex - baseFloatRegIndex; }
133
134 /** @return the number of condition-code physical registers. */
135 unsigned numCCPhysRegs() const
107
108 /**
109 * Destructor to free resources
110 */
111 ~PhysRegFile() {}
112
113 /** Initialize the free list */
114 void initFreeList(UnifiedFreeList *freeList);
115
116 /** @return the number of integer physical registers. */
117 unsigned numIntPhysRegs() const { return baseFloatRegIndex; }
118
119 /** @return the number of floating-point physical registers. */
120 unsigned numFloatPhysRegs() const
121 { return baseCCRegIndex - baseFloatRegIndex; }
122
123 /** @return the number of condition-code physical registers. */
124 unsigned numCCPhysRegs() const
136 { return baseVectorRegIndex - baseCCRegIndex; }
125 { return totalNumRegs - baseCCRegIndex; }
137
126
138 /** @return the number of vector physical registers. */
139 unsigned numVectorPhysRegs() const
140 { return totalNumRegs - baseVectorRegIndex; }
141
142 /** @return the total number of physical registers. */
143 unsigned totalNumPhysRegs() const { return totalNumRegs; }
144
145 /**
146 * @return true if the specified physical register index
147 * corresponds to an integer physical register.
148 */
149 bool isIntPhysReg(PhysRegIndex reg_idx) const

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161 }
162
163 /**
164 * Return true if the specified physical register index
165 * corresponds to a condition-code physical register.
166 */
167 bool isCCPhysReg(PhysRegIndex reg_idx)
168 {
127 /** @return the total number of physical registers. */
128 unsigned totalNumPhysRegs() const { return totalNumRegs; }
129
130 /**
131 * @return true if the specified physical register index
132 * corresponds to an integer physical register.
133 */
134 bool isIntPhysReg(PhysRegIndex reg_idx) const

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146 }
147
148 /**
149 * Return true if the specified physical register index
150 * corresponds to a condition-code physical register.
151 */
152 bool isCCPhysReg(PhysRegIndex reg_idx)
153 {
169 return (baseCCRegIndex <= reg_idx && reg_idx < baseVectorRegIndex);
154 return (baseCCRegIndex <= reg_idx && reg_idx < totalNumRegs);
170 }
171
155 }
156
172 /**
173 * @return true if the specified physical register index
174 * corresponds to a vector physical register.
175 */
176 bool isVectorPhysReg(PhysRegIndex reg_idx) const
177 {
178 return baseVectorRegIndex <= reg_idx && reg_idx < totalNumRegs;
179 }
180
181 /** Reads an integer register. */
182 uint64_t readIntReg(PhysRegIndex reg_idx) const
183 {
184 assert(isIntPhysReg(reg_idx));
185
186 DPRINTF(IEW, "RegFile: Access to int register %i, has data "
187 "%#x\n", int(reg_idx), intRegFile[reg_idx]);
188 return intRegFile[reg_idx];

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226 PhysRegIndex reg_offset = reg_idx - baseCCRegIndex;
227
228 DPRINTF(IEW, "RegFile: Access to cc register %i, has "
229 "data %#x\n", int(reg_idx), ccRegFile[reg_offset]);
230
231 return ccRegFile[reg_offset];
232 }
233
157 /** Reads an integer register. */
158 uint64_t readIntReg(PhysRegIndex reg_idx) const
159 {
160 assert(isIntPhysReg(reg_idx));
161
162 DPRINTF(IEW, "RegFile: Access to int register %i, has data "
163 "%#x\n", int(reg_idx), intRegFile[reg_idx]);
164 return intRegFile[reg_idx];

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202 PhysRegIndex reg_offset = reg_idx - baseCCRegIndex;
203
204 DPRINTF(IEW, "RegFile: Access to cc register %i, has "
205 "data %#x\n", int(reg_idx), ccRegFile[reg_offset]);
206
207 return ccRegFile[reg_offset];
208 }
209
234 /** Reads a vector register. */
235 const VectorReg &readVectorReg(PhysRegIndex reg_idx) const
236 {
237 assert(isVectorPhysReg(reg_idx));
238
239 // Remove the base vector reg dependency.
240 PhysRegIndex reg_offset = reg_idx - baseVectorRegIndex;
241
242 DPRINTF(IEW, "RegFile: Access to vector register %i\n", int(reg_idx));
243 return vectorRegFile[reg_offset];
244 }
245
246 /** Sets an integer register to the given value. */
247 void setIntReg(PhysRegIndex reg_idx, uint64_t val)
248 {
249 assert(isIntPhysReg(reg_idx));
250
251 DPRINTF(IEW, "RegFile: Setting int register %i to %#x\n",
252 int(reg_idx), val);
253

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293 // Remove the base CC reg dependency.
294 PhysRegIndex reg_offset = reg_idx - baseCCRegIndex;
295
296 DPRINTF(IEW, "RegFile: Setting cc register %i to %#x\n",
297 int(reg_idx), (uint64_t)val);
298
299 ccRegFile[reg_offset] = val;
300 }
210 /** Sets an integer register to the given value. */
211 void setIntReg(PhysRegIndex reg_idx, uint64_t val)
212 {
213 assert(isIntPhysReg(reg_idx));
214
215 DPRINTF(IEW, "RegFile: Setting int register %i to %#x\n",
216 int(reg_idx), val);
217

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257 // Remove the base CC reg dependency.
258 PhysRegIndex reg_offset = reg_idx - baseCCRegIndex;
259
260 DPRINTF(IEW, "RegFile: Setting cc register %i to %#x\n",
261 int(reg_idx), (uint64_t)val);
262
263 ccRegFile[reg_offset] = val;
264 }
301
302 /** Sets a vector register to the given value. */
303 void setVectorReg(PhysRegIndex reg_idx, const VectorReg &val)
304 {
305 assert(isVectorPhysReg(reg_idx));
306 // Remove the base vector reg dependency.
307 PhysRegIndex reg_offset = reg_idx - baseVectorRegIndex;
308 DPRINTF(IEW, "RegFile: Setting vector register %i\n", int(reg_idx));
309 vectorRegFile[reg_offset] = val;
310 }
311};
312
313
314#endif //__CPU_O3_REGFILE_HH__
265};
266
267
268#endif //__CPU_O3_REGFILE_HH__