1// Copyright (c) 2006 The Regents of The University of Michigan |
2// All rights reserved. 3// 4// Redistribution and use in source and binary forms, with or without 5// modification, are permitted provided that the following conditions are 6// met: redistributions of source code must retain the above copyright 7// notice, this list of conditions and the following disclaimer; 8// redistributions in binary form must reproduce the above copyright 9// notice, this list of conditions and the following disclaimer in the --- 126 unchanged lines hidden (view full) --- 136 137//This template provides the execute functions for a load 138def template LoadExecute {{ 139 Fault %(class_name)s::execute(%(CPU_exec_context)s *xc, 140 Trace::InstRecord *traceData) const 141 { 142 Fault fault = NoFault; 143 Addr EA; |
144 %(op_decl)s; 145 %(op_rd)s; 146 %(ea_code)s; |
147 DPRINTF(Sparc, "%s: The address is 0x%x\n", mnemonic, EA); |
148 %(fault_check)s; 149 if(fault == NoFault) 150 { 151 fault = xc->read(EA, (uint%(mem_acc_size)s_t&)Mem, %(asi_val)s); 152 } 153 if(fault == NoFault) 154 { 155 %(code)s; 156 } 157 if(fault == NoFault) 158 { 159 //Write the resulting state to the execution context 160 %(op_wb)s; 161 } 162 163 return fault; 164 } |
165}}; |
166 |
167def template LoadInitiateAcc {{ |
168 Fault %(class_name)s::initiateAcc(%(CPU_exec_context)s * xc, 169 Trace::InstRecord * traceData) const 170 { 171 Fault fault = NoFault; 172 Addr EA; 173 uint%(mem_acc_size)s_t Mem; |
174 %(op_decl)s; 175 %(op_rd)s; |
176 %(ea_code)s; |
177 DPRINTF(Sparc, "%s: The address is 0x%x\n", mnemonic, EA); |
178 %(fault_check)s; 179 if(fault == NoFault) 180 { 181 fault = xc->read(EA, (uint%(mem_acc_size)s_t&)Mem, %(asi_val)s); 182 } 183 return fault; 184 } |
185}}; |
186 |
187def template LoadCompleteAcc {{ |
188 Fault %(class_name)s::completeAcc(PacketPtr pkt, %(CPU_exec_context)s * xc, 189 Trace::InstRecord * traceData) const 190 { 191 Fault fault = NoFault; |
192 %(op_decl)s; 193 %(op_rd)s; |
194 Mem = pkt->get<typeof(Mem)>(); 195 %(code)s; 196 if(fault == NoFault) 197 { |
198 %(op_wb)s; |
199 } 200 return fault; 201 } 202}}; 203 204//This template provides the execute functions for a store 205def template StoreExecute {{ 206 Fault %(class_name)s::execute(%(CPU_exec_context)s *xc, 207 Trace::InstRecord *traceData) const 208 { 209 Fault fault = NoFault; 210 //This is to support the conditional store in cas instructions. 211 //It should be optomized out in all the others 212 bool storeCond = true; 213 Addr EA; |
214 %(op_decl)s; 215 %(op_rd)s; 216 %(ea_code)s; |
217 DPRINTF(Sparc, "%s: The address is 0x%x\n", mnemonic, EA); |
218 %(fault_check)s; 219 if(fault == NoFault) 220 { 221 %(code)s; 222 } 223 if(storeCond && fault == NoFault) 224 { 225 fault = xc->write((uint%(mem_acc_size)s_t)Mem, 226 EA, %(asi_val)s, 0); 227 } 228 if(fault == NoFault) 229 { 230 //Write the resulting state to the execution context 231 %(op_wb)s; 232 } 233 234 return fault; 235 } |
236}}; |
237 |
238def template StoreInitiateAcc {{ |
239 Fault %(class_name)s::initiateAcc(%(CPU_exec_context)s * xc, 240 Trace::InstRecord * traceData) const 241 { 242 Fault fault = NoFault; 243 bool storeCond = true; 244 Addr EA; |
245 %(op_decl)s; 246 %(op_rd)s; 247 %(ea_code)s; |
248 DPRINTF(Sparc, "%s: The address is 0x%x\n", mnemonic, EA); |
249 %(fault_check)s; 250 if(fault == NoFault) 251 { 252 %(code)s; 253 } 254 if(storeCond && fault == NoFault) 255 { 256 fault = xc->write((uint%(mem_acc_size)s_t)Mem, 257 EA, %(asi_val)s, 0); 258 } 259 if(fault == NoFault) 260 { 261 //Write the resulting state to the execution context 262 %(op_wb)s; 263 } 264 return fault; 265 } |
266}}; |
267 |
268def template StoreCompleteAcc {{ |
269 Fault %(class_name)s::completeAcc(PacketPtr, %(CPU_exec_context)s * xc, 270 Trace::InstRecord * traceData) const 271 { 272 return NoFault; 273 } 274}}; 275 276//This delcares the initiateAcc function in memory operations 277def template InitiateAccDeclare {{ 278 Fault initiateAcc(%(CPU_exec_context)s *, Trace::InstRecord *) const; 279}}; 280 281//This declares the completeAcc function in memory operations 282def template CompleteAccDeclare {{ 283 Fault completeAcc(PacketPtr, %(CPU_exec_context)s *, Trace::InstRecord *) const; 284}}; 285 286//Here are some code snippets which check for various fault conditions 287let {{ |
288 LoadFuncs = [LoadExecute, LoadInitiateAcc, LoadCompleteAcc] 289 StoreFuncs = [StoreExecute, StoreInitiateAcc, StoreCompleteAcc] |
290 # The LSB can be zero, since it's really the MSB in doubles and quads 291 # and we're dealing with doubles 292 BlockAlignmentFaultCheck = ''' 293 if(RD & 0xe) 294 fault = new IllegalInstruction; 295 else if(EA & 0x3f) 296 fault = new MemAddressNotAligned; 297 ''' |
298 # XXX Need to take care of pstate.hpriv as well. The lower ASIs 299 # are split into ones that are available in priv and hpriv, and 300 # those that are only available in hpriv 301 AlternateASIPrivFaultCheck = ''' 302 if(!bits(Pstate,2,2) && !bits(Hpstate,2,2) && !AsiIsUnPriv((ASI)EXT_ASI) || 303 !bits(Hpstate,2,2) && AsiIsHPriv((ASI)EXT_ASI)) 304 fault = new PrivilegedAction; 305 else if(AsiIsAsIfUser((ASI)EXT_ASI) && !bits(Pstate,2,2)) --- 10 unchanged lines hidden (view full) --- 316}}; 317 318//This function properly generates the execute functions for one of the 319//templates above. This is needed because in one case, ea computation, 320//fault checks and the actual code all occur in the same function, 321//and in the other they're distributed across two. Also note that for 322//execute functions, the name of the base class doesn't matter. 323let {{ |
324 def doSplitExecute(execute, name, Name, asi, opt_flags, microParam): |
325 microParam["asi_val"] = asi; |
326 iop = InstObjParams(name, Name, '', microParam, opt_flags) 327 (execf, initf, compf) = execute 328 return execf.subst(iop) + initf.subst(iop) + compf.subst(iop) |
329 330 331 def doDualSplitExecute(code, eaRegCode, eaImmCode, execute, 332 faultCode, nameReg, nameImm, NameReg, NameImm, asi, opt_flags): 333 executeCode = '' 334 for (eaCode, name, Name) in ( 335 (eaRegCode, nameReg, NameReg), 336 (eaImmCode, nameImm, NameImm)): |
337 microParams = {"code": code, "ea_code": eaCode, 338 "fault_check": faultCode} 339 executeCode += doSplitExecute(execute, name, Name, |
340 asi, opt_flags, microParams) 341 return executeCode 342}}; |