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; --- 10 unchanged lines hidden (view full) --- 19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 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 * Authors: Kevin Lim 29 * Gabe Black |
30 */ 31 |
32#ifndef __CPU_O3_CPU_REGFILE_HH__ 33#define __CPU_O3_CPU_REGFILE_HH__ |
34 |
35// @todo: Destructor 36 |
37#include "arch/isa_traits.hh" 38#include "arch/faults.hh" 39#include "base/trace.hh" 40#include "config/full_system.hh" 41#include "cpu/o3/comm.hh" 42 43#if FULL_SYSTEM 44#include "kern/kernel_stats.hh" 45 46#endif 47 |
48// This really only depends on the ISA, and not the Impl. It might be nicer 49// to see if I can make it depend on nothing... 50// Things that are in the ifdef FULL_SYSTEM are pretty dependent on the ISA, 51// and should go in the AlphaFullCPU. |
52 |
53template <class Impl> 54class PhysRegFile 55{ 56 protected: 57 typedef TheISA::IntReg IntReg; 58 typedef TheISA::FloatReg FloatReg; 59 typedef TheISA::MiscRegFile MiscRegFile; 60 typedef TheISA::MiscReg MiscReg; |
61 |
62 //Note that most of the definitions of the IntReg, FloatReg, etc. exist 63 //within the Impl/ISA class and not within this PhysRegFile class. 64 65 //Will need some way to allow stuff like swap_palshadow to access the 66 //correct registers. Might require code changes to swap_palshadow and 67 //other execution contexts. 68 69 //Will make these registers public for now, but they probably should 70 //be private eventually with some accessor functions. |
71 public: 72 typedef typename Impl::FullCPU FullCPU; 73 |
74 PhysRegFile(unsigned _numPhysicalIntRegs, 75 unsigned _numPhysicalFloatRegs); 76 77 //Everything below should be pretty well identical to the normal 78 //register file that exists within AlphaISA class. 79 //The duplication is unfortunate but it's better than having 80 //different ways to access certain registers. 81 82 //Add these in later when everything else is in place 83// void serialize(std::ostream &os); 84// void unserialize(Checkpoint *cp, const std::string §ion); 85 |
86 uint64_t readIntReg(PhysRegIndex reg_idx) 87 { 88 assert(reg_idx < numPhysicalIntRegs); 89 90 DPRINTF(IEW, "RegFile: Access to int register %i, has data " 91 "%i\n", int(reg_idx), intRegFile[reg_idx]); 92 return intRegFile[reg_idx]; 93 } --- 8 unchanged lines hidden (view full) --- 102 FloatReg floatReg = floatRegFile.readReg(reg_idx, width); 103 104 DPRINTF(IEW, "RegFile: Access to %d byte float register %i, has " 105 "data %8.8d\n", int(reg_idx), (double)floatReg); 106 107 return floatReg; 108 } 109 |
110 FloatReg readFloatReg(PhysRegIndex reg_idx) 111 { 112 // Remove the base Float reg dependency. 113 reg_idx = reg_idx - numPhysicalIntRegs; 114 115 assert(reg_idx < numPhysicalFloatRegs + numPhysicalIntRegs); 116 117 FloatReg floatReg = floatRegFile.readReg(reg_idx); 118 119 DPRINTF(IEW, "RegFile: Access to float register %i, has " 120 "data %8.8d\n", int(reg_idx), (double)floatReg); 121 122 return floatReg; 123 } 124 |
125 FloatRegBits readFloatRegBits(PhysRegIndex reg_idx, int width) 126 { 127 // Remove the base Float reg dependency. 128 reg_idx = reg_idx - numPhysicalIntRegs; 129 130 assert(reg_idx < numPhysicalFloatRegs + numPhysicalIntRegs); 131 132 FloatRegBits floatRegBits = floatRegFile.readRegBits(reg_idx, width); --- 14 unchanged lines hidden (view full) --- 147 FloatRegBits floatRegBits = floatRegFile.readRegBits(reg_idx); 148 149 DPRINTF(IEW, "RegFile: Access to float register %i as int, " 150 "has data %lli\n", int(reg_idx), (uint64_t)floatRegBits); 151 152 return floatRegBits; 153 } 154 |
155 void setIntReg(PhysRegIndex reg_idx, uint64_t val) 156 { 157 assert(reg_idx < numPhysicalIntRegs); 158 159 DPRINTF(IEW, "RegFile: Setting int register %i to %lli\n", 160 int(reg_idx), val); 161 |
162 intRegFile[reg_idx] = val; |
163 } 164 |
165 void setFloatReg(PhysRegIndex reg_idx, FloatReg val, int width) 166 { 167 // Remove the base Float reg dependency. 168 reg_idx = reg_idx - numPhysicalIntRegs; 169 170 assert(reg_idx < numPhysicalFloatRegs + numPhysicalIntRegs); 171 172 DPRINTF(IEW, "RegFile: Setting float register %i to %8.8d\n", 173 int(reg_idx), (double)val); 174 |
175 floatRegFile.setReg(reg_idx, val, width); |
176 } 177 |
178 void setFloatReg(PhysRegIndex reg_idx, FloatReg val) 179 { 180 // Remove the base Float reg dependency. 181 reg_idx = reg_idx - numPhysicalIntRegs; 182 183 assert(reg_idx < numPhysicalFloatRegs + numPhysicalIntRegs); 184 185 DPRINTF(IEW, "RegFile: Setting float register %i to %8.8d\n", 186 int(reg_idx), (double)val); 187 |
188 floatRegFile.setReg(reg_idx, val); |
189 } 190 |
191 void setFloatRegBits(PhysRegIndex reg_idx, FloatRegBits val, int width) 192 { 193 // Remove the base Float reg dependency. 194 reg_idx = reg_idx - numPhysicalIntRegs; 195 196 assert(reg_idx < numPhysicalFloatRegs + numPhysicalIntRegs); 197 198 DPRINTF(IEW, "RegFile: Setting float register %i to %lli\n", --- 6 unchanged lines hidden (view full) --- 205 { 206 // Remove the base Float reg dependency. 207 reg_idx = reg_idx - numPhysicalIntRegs; 208 209 assert(reg_idx < numPhysicalFloatRegs + numPhysicalIntRegs); 210 211 DPRINTF(IEW, "RegFile: Setting float register %i to %lli\n", 212 int(reg_idx), (uint64_t)val); |
213 214 floatRegFile.setRegBits(reg_idx, val); |
215 } 216 |
217 uint64_t readPC() |
218 { |
219 return pc; |
220 } 221 |
222 void setPC(uint64_t val) |
223 { |
224 pc = val; |
225 } 226 |
227 void setNextPC(uint64_t val) |
228 { |
229 npc = val; |
230 } 231 |
232 //Consider leaving this stuff and below in some implementation specific 233 //file as opposed to the general register file. Or have a derived class. 234 MiscReg readMiscReg(int misc_reg) 235 { 236 // Dummy function for now. 237 // @todo: Fix this once proxy XC is used. 238 return 0; 239 } 240 241 Fault setMiscReg(int misc_reg, const MiscReg &val) 242 { 243 // Dummy function for now. 244 // @todo: Fix this once proxy XC is used. 245 return NoFault; 246 } 247 |
248#if FULL_SYSTEM 249 int readIntrFlag() { return intrflag; } |
250 void setIntrFlag(int val) { intrflag = val; } 251#endif 252 |
253 // These should be private eventually, but will be public for now 254 // so that I can hack around the initregs issue. |
255 public: 256 /** (signed) integer register file. */ |
257 IntReg *intRegFile; |
258 259 /** Floating point register file. */ |
260 FloatReg *floatRegFile; |
261 262 /** Miscellaneous register file. */ |
263 MiscRegFile miscRegs; |
264 |
265 /** Program counter. */ 266 Addr pc; 267 268 /** Next-cycle program counter. */ 269 Addr npc; 270 |
271#if FULL_SYSTEM 272 private: |
273 // This is ISA specifc stuff; remove it eventually once ISAImpl is used 274// IntReg palregs[NumIntRegs]; // PAL shadow registers |
275 int intrflag; // interrupt flag |
276 bool pal_shadow; // using pal_shadow registers |
277#endif 278 279 private: |
280 FullCPU *cpu; 281 282 public: |
283 void setCPU(FullCPU *cpu_ptr) { cpu = cpu_ptr; } 284 |
285 unsigned numPhysicalIntRegs; |
286 unsigned numPhysicalFloatRegs; 287}; 288 289template <class Impl> 290PhysRegFile<Impl>::PhysRegFile(unsigned _numPhysicalIntRegs, 291 unsigned _numPhysicalFloatRegs) 292 : numPhysicalIntRegs(_numPhysicalIntRegs), 293 numPhysicalFloatRegs(_numPhysicalFloatRegs) 294{ |
295 intRegFile = new IntReg[numPhysicalIntRegs]; 296 floatRegFile = new FloatReg[numPhysicalFloatRegs]; |
297 |
298 memset(intRegFile, 0, sizeof(*intRegFile)); 299 memset(floatRegFile, 0, sizeof(*floatRegFile)); |
300} 301 |
302#endif // __CPU_O3_CPU_REGFILE_HH__ |