ldstop.isa revision 7967
1// Copyright (c) 2007-2008 The Hewlett-Packard Development Company 2// All rights reserved. 3// 4// The license below extends only to copyright in the software and shall 5// not be construed as granting a license to any other intellectual 6// property including but not limited to intellectual property relating 7// to a hardware implementation of the functionality of the software 8// licensed hereunder. You may use the software subject to the license 9// terms below provided that you ensure that this notice is replicated 10// unmodified and in its entirety in all distributions of the software, 11// modified or unmodified, in source code or in binary form. 12// 13// Copyright (c) 2008 The Regents of The University of Michigan 14// All rights reserved. 15// 16// Redistribution and use in source and binary forms, with or without 17// modification, are permitted provided that the following conditions are 18// met: redistributions of source code must retain the above copyright 19// notice, this list of conditions and the following disclaimer; 20// redistributions in binary form must reproduce the above copyright 21// notice, this list of conditions and the following disclaimer in the 22// documentation and/or other materials provided with the distribution; 23// neither the name of the copyright holders nor the names of its 24// contributors may be used to endorse or promote products derived from 25// this software without specific prior written permission. 26// 27// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 28// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 29// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 30// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 31// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 32// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 33// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 34// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 35// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 36// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 37// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 38// 39// Authors: Gabe Black 40 41////////////////////////////////////////////////////////////////////////// 42// 43// LdStOp Microop templates 44// 45////////////////////////////////////////////////////////////////////////// 46 47// LEA template 48 49def template MicroLeaExecute {{ 50 Fault %(class_name)s::execute(%(CPU_exec_context)s *xc, 51 Trace::InstRecord *traceData) const 52 { 53 Fault fault = NoFault; 54 Addr EA; 55 56 %(op_decl)s; 57 %(op_rd)s; 58 %(ea_code)s; 59 DPRINTF(X86, "%s : %s: The address is %#x\n", instMnem, mnemonic, EA); 60 61 %(code)s; 62 if(fault == NoFault) 63 { 64 %(op_wb)s; 65 } 66 67 return fault; 68 } 69}}; 70 71def template MicroLeaDeclare {{ 72 class %(class_name)s : public %(base_class)s 73 { 74 public: 75 %(class_name)s(ExtMachInst _machInst, 76 const char * instMnem, uint64_t setFlags, 77 uint8_t _scale, InstRegIndex _index, InstRegIndex _base, 78 uint64_t _disp, InstRegIndex _segment, 79 InstRegIndex _data, 80 uint8_t _dataSize, uint8_t _addressSize, 81 Request::FlagsType _memFlags); 82 83 %(BasicExecDeclare)s 84 }; 85}}; 86 87// Load templates 88 89def template MicroLoadExecute {{ 90 Fault %(class_name)s::execute(%(CPU_exec_context)s *xc, 91 Trace::InstRecord *traceData) const 92 { 93 Fault fault = NoFault; 94 Addr EA; 95 96 %(op_decl)s; 97 %(op_rd)s; 98 %(ea_code)s; 99 DPRINTF(X86, "%s : %s: The address is %#x\n", instMnem, mnemonic, EA); 100 101 fault = read(xc, EA, Mem, memFlags); 102 103 if (fault == NoFault) { 104 %(code)s; 105 } else if (memFlags & Request::PREFETCH) { 106 // For prefetches, ignore any faults/exceptions. 107 return NoFault; 108 } 109 if(fault == NoFault) 110 { 111 %(op_wb)s; 112 } 113 114 return fault; 115 } 116}}; 117 118def template MicroLoadInitiateAcc {{ 119 Fault %(class_name)s::initiateAcc(%(CPU_exec_context)s * xc, 120 Trace::InstRecord * traceData) const 121 { 122 Fault fault = NoFault; 123 Addr EA; 124 125 %(op_decl)s; 126 %(op_rd)s; 127 %(ea_code)s; 128 DPRINTF(X86, "%s : %s: The address is %#x\n", instMnem, mnemonic, EA); 129 130 fault = read(xc, EA, Mem, memFlags); 131 132 return fault; 133 } 134}}; 135 136def template MicroLoadCompleteAcc {{ 137 Fault %(class_name)s::completeAcc(PacketPtr pkt, 138 %(CPU_exec_context)s * xc, 139 Trace::InstRecord * traceData) const 140 { 141 Fault fault = NoFault; 142 143 %(op_decl)s; 144 %(op_rd)s; 145 146 Mem = get(pkt); 147 148 %(code)s; 149 150 if(fault == NoFault) 151 { 152 %(op_wb)s; 153 } 154 155 return fault; 156 } 157}}; 158 159// Store templates 160 161def template MicroStoreExecute {{ 162 Fault %(class_name)s::execute(%(CPU_exec_context)s * xc, 163 Trace::InstRecord *traceData) const 164 { 165 Fault fault = NoFault; 166 167 Addr EA; 168 %(op_decl)s; 169 %(op_rd)s; 170 %(ea_code)s; 171 DPRINTF(X86, "%s : %s: The address is %#x\n", instMnem, mnemonic, EA); 172 173 %(code)s; 174 175 if(fault == NoFault) 176 { 177 fault = write(xc, Mem, EA, memFlags); 178 if(fault == NoFault) 179 { 180 %(post_code)s; 181 %(op_wb)s; 182 } 183 } 184 185 return fault; 186 } 187}}; 188 189def template MicroStoreInitiateAcc {{ 190 Fault %(class_name)s::initiateAcc(%(CPU_exec_context)s * xc, 191 Trace::InstRecord * traceData) const 192 { 193 Fault fault = NoFault; 194 195 Addr EA; 196 %(op_decl)s; 197 %(op_rd)s; 198 %(ea_code)s; 199 DPRINTF(X86, "%s : %s: The address is %#x\n", instMnem, mnemonic, EA); 200 201 %(code)s; 202 203 if(fault == NoFault) 204 { 205 write(xc, Mem, EA, memFlags); 206 } 207 return fault; 208 } 209}}; 210 211def template MicroStoreCompleteAcc {{ 212 Fault %(class_name)s::completeAcc(PacketPtr pkt, 213 %(CPU_exec_context)s * xc, Trace::InstRecord * traceData) const 214 { 215 %(op_decl)s; 216 %(op_rd)s; 217 %(complete_code)s; 218 %(op_wb)s; 219 return NoFault; 220 } 221}}; 222 223// Common templates 224 225//This delcares the initiateAcc function in memory operations 226def template InitiateAccDeclare {{ 227 Fault initiateAcc(%(CPU_exec_context)s *, Trace::InstRecord *) const; 228}}; 229 230//This declares the completeAcc function in memory operations 231def template CompleteAccDeclare {{ 232 Fault completeAcc(PacketPtr, %(CPU_exec_context)s *, Trace::InstRecord *) const; 233}}; 234 235def template MicroLdStOpDeclare {{ 236 class %(class_name)s : public %(base_class)s 237 { 238 public: 239 %(class_name)s(ExtMachInst _machInst, 240 const char * instMnem, uint64_t setFlags, 241 uint8_t _scale, InstRegIndex _index, InstRegIndex _base, 242 uint64_t _disp, InstRegIndex _segment, 243 InstRegIndex _data, 244 uint8_t _dataSize, uint8_t _addressSize, 245 Request::FlagsType _memFlags); 246 247 %(BasicExecDeclare)s 248 249 %(InitiateAccDeclare)s 250 251 %(CompleteAccDeclare)s 252 }; 253}}; 254 255def template MicroLdStOpConstructor {{ 256 inline %(class_name)s::%(class_name)s( 257 ExtMachInst machInst, const char * instMnem, uint64_t setFlags, 258 uint8_t _scale, InstRegIndex _index, InstRegIndex _base, 259 uint64_t _disp, InstRegIndex _segment, 260 InstRegIndex _data, 261 uint8_t _dataSize, uint8_t _addressSize, 262 Request::FlagsType _memFlags) : 263 %(base_class)s(machInst, "%(mnemonic)s", instMnem, setFlags, 264 _scale, _index, _base, 265 _disp, _segment, _data, 266 _dataSize, _addressSize, _memFlags, %(op_class)s) 267 { 268 %(constructor)s; 269 } 270}}; 271 272let {{ 273 class LdStOp(X86Microop): 274 def __init__(self, data, segment, addr, disp, 275 dataSize, addressSize, baseFlags, atCPL0, prefetch): 276 self.data = data 277 [self.scale, self.index, self.base] = addr 278 self.disp = disp 279 self.segment = segment 280 self.dataSize = dataSize 281 self.addressSize = addressSize 282 self.memFlags = baseFlags 283 if atCPL0: 284 self.memFlags += " | (CPL0FlagBit << FlagShift)" 285 if prefetch: 286 self.memFlags += " | Request::PREFETCH" 287 self.memFlags += " | (machInst.legacy.addr ? " + \ 288 "(AddrSizeFlagBit << FlagShift) : 0)" 289 290 def getAllocator(self, microFlags): 291 allocator = '''new %(class_name)s(machInst, macrocodeBlock, 292 %(flags)s, %(scale)s, %(index)s, %(base)s, 293 %(disp)s, %(segment)s, %(data)s, 294 %(dataSize)s, %(addressSize)s, %(memFlags)s)''' % { 295 "class_name" : self.className, 296 "flags" : self.microFlagsText(microFlags), 297 "scale" : self.scale, "index" : self.index, 298 "base" : self.base, 299 "disp" : self.disp, 300 "segment" : self.segment, "data" : self.data, 301 "dataSize" : self.dataSize, "addressSize" : self.addressSize, 302 "memFlags" : self.memFlags} 303 return allocator 304 305 class BigLdStOp(X86Microop): 306 def __init__(self, data, segment, addr, disp, 307 dataSize, addressSize, baseFlags, atCPL0, prefetch): 308 self.data = data 309 [self.scale, self.index, self.base] = addr 310 self.disp = disp 311 self.segment = segment 312 self.dataSize = dataSize 313 self.addressSize = addressSize 314 self.memFlags = baseFlags 315 if atCPL0: 316 self.memFlags += " | (CPL0FlagBit << FlagShift)" 317 if prefetch: 318 self.memFlags += " | Request::PREFETCH" 319 self.memFlags += " | (machInst.legacy.addr ? " + \ 320 "(AddrSizeFlagBit << FlagShift) : 0)" 321 322 def getAllocator(self, microFlags): 323 allocString = ''' 324 (%(dataSize)s >= 4) ? 325 (StaticInstPtr)(new %(class_name)sBig(machInst, 326 macrocodeBlock, %(flags)s, %(scale)s, %(index)s, 327 %(base)s, %(disp)s, %(segment)s, %(data)s, 328 %(dataSize)s, %(addressSize)s, %(memFlags)s)) : 329 (StaticInstPtr)(new %(class_name)s(machInst, 330 macrocodeBlock, %(flags)s, %(scale)s, %(index)s, 331 %(base)s, %(disp)s, %(segment)s, %(data)s, 332 %(dataSize)s, %(addressSize)s, %(memFlags)s)) 333 ''' 334 allocator = allocString % { 335 "class_name" : self.className, 336 "flags" : self.microFlagsText(microFlags), 337 "scale" : self.scale, "index" : self.index, 338 "base" : self.base, 339 "disp" : self.disp, 340 "segment" : self.segment, "data" : self.data, 341 "dataSize" : self.dataSize, "addressSize" : self.addressSize, 342 "memFlags" : self.memFlags} 343 return allocator 344}}; 345 346let {{ 347 348 # Make these empty strings so that concatenating onto 349 # them will always work. 350 header_output = "" 351 decoder_output = "" 352 exec_output = "" 353 354 calculateEA = ''' 355 EA = bits(SegBase + scale * Index + Base + disp, addressSize * 8 - 1, 0); 356 ''' 357 358 def defineMicroLoadOp(mnemonic, code, bigCode='', 359 mem_flags="0", big=True): 360 global header_output 361 global decoder_output 362 global exec_output 363 global microopClasses 364 Name = mnemonic 365 name = mnemonic.lower() 366 367 # Build up the all register version of this micro op 368 iops = [InstObjParams(name, Name, 'X86ISA::LdStOp', 369 {"code": code, "ea_code": calculateEA})] 370 if big: 371 iops += [InstObjParams(name, Name + "Big", 'X86ISA::LdStOp', 372 {"code": bigCode, "ea_code": calculateEA})] 373 for iop in iops: 374 header_output += MicroLdStOpDeclare.subst(iop) 375 decoder_output += MicroLdStOpConstructor.subst(iop) 376 exec_output += MicroLoadExecute.subst(iop) 377 exec_output += MicroLoadInitiateAcc.subst(iop) 378 exec_output += MicroLoadCompleteAcc.subst(iop) 379 380 base = LdStOp 381 if big: 382 base = BigLdStOp 383 class LoadOp(base): 384 def __init__(self, data, segment, addr, disp = 0, 385 dataSize="env.dataSize", 386 addressSize="env.addressSize", 387 atCPL0=False, prefetch=False): 388 super(LoadOp, self).__init__(data, segment, addr, 389 disp, dataSize, addressSize, mem_flags, 390 atCPL0, prefetch) 391 self.className = Name 392 self.mnemonic = name 393 394 microopClasses[name] = LoadOp 395 396 defineMicroLoadOp('Ld', 'Data = merge(Data, Mem, dataSize);', 397 'Data = Mem & mask(dataSize * 8);') 398 defineMicroLoadOp('Ldst', 'Data = merge(Data, Mem, dataSize);', 399 'Data = Mem & mask(dataSize * 8);', 400 '(StoreCheck << FlagShift)') 401 defineMicroLoadOp('Ldstl', 'Data = merge(Data, Mem, dataSize);', 402 'Data = Mem & mask(dataSize * 8);', 403 '(StoreCheck << FlagShift) | Request::LOCKED') 404 defineMicroLoadOp('Ldfp', 'FpData.uqw = Mem;', big = False) 405 406 def defineMicroStoreOp(mnemonic, code, \ 407 postCode="", completeCode="", mem_flags="0"): 408 global header_output 409 global decoder_output 410 global exec_output 411 global microopClasses 412 Name = mnemonic 413 name = mnemonic.lower() 414 415 # Build up the all register version of this micro op 416 iop = InstObjParams(name, Name, 'X86ISA::LdStOp', 417 {"code": code, 418 "post_code": postCode, 419 "complete_code": completeCode, 420 "ea_code": calculateEA}) 421 header_output += MicroLdStOpDeclare.subst(iop) 422 decoder_output += MicroLdStOpConstructor.subst(iop) 423 exec_output += MicroStoreExecute.subst(iop) 424 exec_output += MicroStoreInitiateAcc.subst(iop) 425 exec_output += MicroStoreCompleteAcc.subst(iop) 426 427 class StoreOp(LdStOp): 428 def __init__(self, data, segment, addr, disp = 0, 429 dataSize="env.dataSize", 430 addressSize="env.addressSize", 431 atCPL0=False): 432 super(StoreOp, self).__init__(data, segment, addr, 433 disp, dataSize, addressSize, mem_flags, atCPL0, False) 434 self.className = Name 435 self.mnemonic = name 436 437 microopClasses[name] = StoreOp 438 439 defineMicroStoreOp('St', 'Mem = pick(Data, 2, dataSize);') 440 defineMicroStoreOp('Stul', 'Mem = pick(Data, 2, dataSize);', 441 mem_flags="Request::LOCKED") 442 defineMicroStoreOp('Stfp', 'Mem = FpData.uqw;') 443 defineMicroStoreOp('Cda', 'Mem = 0;', mem_flags="Request::NO_ACCESS") 444 445 iop = InstObjParams("lea", "Lea", 'X86ISA::LdStOp', 446 {"code": "Data = merge(Data, EA, dataSize);", 447 "ea_code": ''' 448 EA = bits(scale * Index + Base + disp, addressSize * 8 - 1, 0); 449 '''}) 450 header_output += MicroLeaDeclare.subst(iop) 451 decoder_output += MicroLdStOpConstructor.subst(iop) 452 exec_output += MicroLeaExecute.subst(iop) 453 454 class LeaOp(LdStOp): 455 def __init__(self, data, segment, addr, disp = 0, 456 dataSize="env.dataSize", addressSize="env.addressSize"): 457 super(LeaOp, self).__init__(data, segment, 458 addr, disp, dataSize, addressSize, "0", False, False) 459 self.className = "Lea" 460 self.mnemonic = "lea" 461 462 microopClasses["lea"] = LeaOp 463 464 465 iop = InstObjParams("tia", "Tia", 'X86ISA::LdStOp', 466 {"code": "xc->demapPage(EA, 0);", 467 "ea_code": calculateEA}) 468 header_output += MicroLeaDeclare.subst(iop) 469 decoder_output += MicroLdStOpConstructor.subst(iop) 470 exec_output += MicroLeaExecute.subst(iop) 471 472 class TiaOp(LdStOp): 473 def __init__(self, segment, addr, disp = 0, 474 dataSize="env.dataSize", 475 addressSize="env.addressSize"): 476 super(TiaOp, self).__init__("InstRegIndex(NUM_INTREGS)", segment, 477 addr, disp, dataSize, addressSize, "0", False, False) 478 self.className = "Tia" 479 self.mnemonic = "tia" 480 481 microopClasses["tia"] = TiaOp 482 483 class CdaOp(LdStOp): 484 def __init__(self, segment, addr, disp = 0, 485 dataSize="env.dataSize", 486 addressSize="env.addressSize", atCPL0=False): 487 super(CdaOp, self).__init__("InstRegIndex(NUM_INTREGS)", segment, 488 addr, disp, dataSize, addressSize, "Request::NO_ACCESS", 489 atCPL0, False) 490 self.className = "Cda" 491 self.mnemonic = "cda" 492 493 microopClasses["cda"] = CdaOp 494}}; 495 496