timing.cc revision 5348:7847a4bf9641
1/* 2 * Copyright (c) 2002-2005 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; 9 * redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution; 12 * neither the name of the copyright holders nor the names of its 13 * contributors may be used to endorse or promote products derived from 14 * this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 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: Steve Reinhardt 29 */ 30 31#include "arch/locked_mem.hh" 32#include "arch/mmaped_ipr.hh" 33#include "arch/utility.hh" 34#include "base/bigint.hh" 35#include "cpu/exetrace.hh" 36#include "cpu/simple/timing.hh" 37#include "mem/packet.hh" 38#include "mem/packet_access.hh" 39#include "params/TimingSimpleCPU.hh" 40#include "sim/system.hh" 41 42using namespace std; 43using namespace TheISA; 44 45Port * 46TimingSimpleCPU::getPort(const std::string &if_name, int idx) 47{ 48 if (if_name == "dcache_port") 49 return &dcachePort; 50 else if (if_name == "icache_port") 51 return &icachePort; 52 else 53 panic("No Such Port\n"); 54} 55 56void 57TimingSimpleCPU::init() 58{ 59 BaseCPU::init(); 60 cpuId = tc->readCpuId(); 61#if FULL_SYSTEM 62 for (int i = 0; i < threadContexts.size(); ++i) { 63 ThreadContext *tc = threadContexts[i]; 64 65 // initialize CPU, including PC 66 TheISA::initCPU(tc, cpuId); 67 } 68#endif 69} 70 71Tick 72TimingSimpleCPU::CpuPort::recvAtomic(PacketPtr pkt) 73{ 74 panic("TimingSimpleCPU doesn't expect recvAtomic callback!"); 75 return curTick; 76} 77 78void 79TimingSimpleCPU::CpuPort::recvFunctional(PacketPtr pkt) 80{ 81 //No internal storage to update, jusst return 82 return; 83} 84 85void 86TimingSimpleCPU::CpuPort::recvStatusChange(Status status) 87{ 88 if (status == RangeChange) { 89 if (!snoopRangeSent) { 90 snoopRangeSent = true; 91 sendStatusChange(Port::RangeChange); 92 } 93 return; 94 } 95 96 panic("TimingSimpleCPU doesn't expect recvStatusChange callback!"); 97} 98 99 100void 101TimingSimpleCPU::CpuPort::TickEvent::schedule(PacketPtr _pkt, Tick t) 102{ 103 pkt = _pkt; 104 Event::schedule(t); 105} 106 107TimingSimpleCPU::TimingSimpleCPU(Params *p) 108 : BaseSimpleCPU(p), icachePort(this, p->clock), dcachePort(this, p->clock) 109{ 110 _status = Idle; 111 112 icachePort.snoopRangeSent = false; 113 dcachePort.snoopRangeSent = false; 114 115 ifetch_pkt = dcache_pkt = NULL; 116 drainEvent = NULL; 117 fetchEvent = NULL; 118 previousTick = 0; 119 changeState(SimObject::Running); 120} 121 122 123TimingSimpleCPU::~TimingSimpleCPU() 124{ 125} 126 127void 128TimingSimpleCPU::serialize(ostream &os) 129{ 130 SimObject::State so_state = SimObject::getState(); 131 SERIALIZE_ENUM(so_state); 132 BaseSimpleCPU::serialize(os); 133} 134 135void 136TimingSimpleCPU::unserialize(Checkpoint *cp, const string §ion) 137{ 138 SimObject::State so_state; 139 UNSERIALIZE_ENUM(so_state); 140 BaseSimpleCPU::unserialize(cp, section); 141} 142 143unsigned int 144TimingSimpleCPU::drain(Event *drain_event) 145{ 146 // TimingSimpleCPU is ready to drain if it's not waiting for 147 // an access to complete. 148 if (status() == Idle || status() == Running || status() == SwitchedOut) { 149 changeState(SimObject::Drained); 150 return 0; 151 } else { 152 changeState(SimObject::Draining); 153 drainEvent = drain_event; 154 return 1; 155 } 156} 157 158void 159TimingSimpleCPU::resume() 160{ 161 DPRINTF(SimpleCPU, "Resume\n"); 162 if (_status != SwitchedOut && _status != Idle) { 163 assert(system->getMemoryMode() == Enums::timing); 164 165 // Delete the old event if it existed. 166 if (fetchEvent) { 167 if (fetchEvent->scheduled()) 168 fetchEvent->deschedule(); 169 170 delete fetchEvent; 171 } 172 173 fetchEvent = new FetchEvent(this, nextCycle()); 174 } 175 176 changeState(SimObject::Running); 177} 178 179void 180TimingSimpleCPU::switchOut() 181{ 182 assert(status() == Running || status() == Idle); 183 _status = SwitchedOut; 184 numCycles += tickToCycles(curTick - previousTick); 185 186 // If we've been scheduled to resume but are then told to switch out, 187 // we'll need to cancel it. 188 if (fetchEvent && fetchEvent->scheduled()) 189 fetchEvent->deschedule(); 190} 191 192 193void 194TimingSimpleCPU::takeOverFrom(BaseCPU *oldCPU) 195{ 196 BaseCPU::takeOverFrom(oldCPU, &icachePort, &dcachePort); 197 198 // if any of this CPU's ThreadContexts are active, mark the CPU as 199 // running and schedule its tick event. 200 for (int i = 0; i < threadContexts.size(); ++i) { 201 ThreadContext *tc = threadContexts[i]; 202 if (tc->status() == ThreadContext::Active && _status != Running) { 203 _status = Running; 204 break; 205 } 206 } 207 208 if (_status != Running) { 209 _status = Idle; 210 } 211 assert(threadContexts.size() == 1); 212 cpuId = tc->readCpuId(); 213 previousTick = curTick; 214} 215 216 217void 218TimingSimpleCPU::activateContext(int thread_num, int delay) 219{ 220 DPRINTF(SimpleCPU, "ActivateContext %d (%d cycles)\n", thread_num, delay); 221 222 assert(thread_num == 0); 223 assert(thread); 224 225 assert(_status == Idle); 226 227 notIdleFraction++; 228 _status = Running; 229 230 // kick things off by initiating the fetch of the next instruction 231 fetchEvent = new FetchEvent(this, nextCycle(curTick + ticks(delay))); 232} 233 234 235void 236TimingSimpleCPU::suspendContext(int thread_num) 237{ 238 DPRINTF(SimpleCPU, "SuspendContext %d\n", thread_num); 239 240 assert(thread_num == 0); 241 assert(thread); 242 243 assert(_status == Running); 244 245 // just change status to Idle... if status != Running, 246 // completeInst() will not initiate fetch of next instruction. 247 248 notIdleFraction--; 249 _status = Idle; 250} 251 252 253template <class T> 254Fault 255TimingSimpleCPU::read(Addr addr, T &data, unsigned flags) 256{ 257 Request *req = 258 new Request(/* asid */ 0, addr, sizeof(T), flags, thread->readPC(), 259 cpuId, /* thread ID */ 0); 260 261 if (traceData) { 262 traceData->setAddr(req->getVaddr()); 263 } 264 265 // translate to physical address 266 Fault fault = thread->translateDataReadReq(req); 267 268 // Now do the access. 269 if (fault == NoFault) { 270 PacketPtr pkt = 271 new Packet(req, 272 (req->isLocked() ? 273 MemCmd::LoadLockedReq : MemCmd::ReadReq), 274 Packet::Broadcast); 275 pkt->dataDynamic<T>(new T); 276 277 if (req->isMmapedIpr()) { 278 Tick delay; 279 delay = TheISA::handleIprRead(thread->getTC(), pkt); 280 new IprEvent(pkt, this, nextCycle(curTick + delay)); 281 _status = DcacheWaitResponse; 282 dcache_pkt = NULL; 283 } else if (!dcachePort.sendTiming(pkt)) { 284 _status = DcacheRetry; 285 dcache_pkt = pkt; 286 } else { 287 _status = DcacheWaitResponse; 288 // memory system takes ownership of packet 289 dcache_pkt = NULL; 290 } 291 292 // This will need a new way to tell if it has a dcache attached. 293 if (req->isUncacheable()) 294 recordEvent("Uncached Read"); 295 } else { 296 delete req; 297 } 298 299 return fault; 300} 301 302Fault 303TimingSimpleCPU::translateDataReadAddr(Addr vaddr, Addr &paddr, 304 int size, unsigned flags) 305{ 306 Request *req = 307 new Request(0, vaddr, size, flags, thread->readPC(), cpuId, 0); 308 309 if (traceData) { 310 traceData->setAddr(vaddr); 311 } 312 313 Fault fault = thread->translateDataWriteReq(req); 314 315 if (fault == NoFault) 316 paddr = req->getPaddr(); 317 318 delete req; 319 return fault; 320} 321 322#ifndef DOXYGEN_SHOULD_SKIP_THIS 323 324template 325Fault 326TimingSimpleCPU::read(Addr addr, Twin64_t &data, unsigned flags); 327 328template 329Fault 330TimingSimpleCPU::read(Addr addr, Twin32_t &data, unsigned flags); 331 332template 333Fault 334TimingSimpleCPU::read(Addr addr, uint64_t &data, unsigned flags); 335 336template 337Fault 338TimingSimpleCPU::read(Addr addr, uint32_t &data, unsigned flags); 339 340template 341Fault 342TimingSimpleCPU::read(Addr addr, uint16_t &data, unsigned flags); 343 344template 345Fault 346TimingSimpleCPU::read(Addr addr, uint8_t &data, unsigned flags); 347 348#endif //DOXYGEN_SHOULD_SKIP_THIS 349 350template<> 351Fault 352TimingSimpleCPU::read(Addr addr, double &data, unsigned flags) 353{ 354 return read(addr, *(uint64_t*)&data, flags); 355} 356 357template<> 358Fault 359TimingSimpleCPU::read(Addr addr, float &data, unsigned flags) 360{ 361 return read(addr, *(uint32_t*)&data, flags); 362} 363 364 365template<> 366Fault 367TimingSimpleCPU::read(Addr addr, int32_t &data, unsigned flags) 368{ 369 return read(addr, (uint32_t&)data, flags); 370} 371 372 373template <class T> 374Fault 375TimingSimpleCPU::write(T data, Addr addr, unsigned flags, uint64_t *res) 376{ 377 Request *req = 378 new Request(/* asid */ 0, addr, sizeof(T), flags, thread->readPC(), 379 cpuId, /* thread ID */ 0); 380 381 if (traceData) { 382 traceData->setAddr(req->getVaddr()); 383 } 384 385 // translate to physical address 386 Fault fault = thread->translateDataWriteReq(req); 387 388 // Now do the access. 389 if (fault == NoFault) { 390 MemCmd cmd = MemCmd::WriteReq; // default 391 bool do_access = true; // flag to suppress cache access 392 393 if (req->isLocked()) { 394 cmd = MemCmd::StoreCondReq; 395 do_access = TheISA::handleLockedWrite(thread, req); 396 } else if (req->isSwap()) { 397 cmd = MemCmd::SwapReq; 398 if (req->isCondSwap()) { 399 assert(res); 400 req->setExtraData(*res); 401 } 402 } 403 404 // Note: need to allocate dcache_pkt even if do_access is 405 // false, as it's used unconditionally to call completeAcc(). 406 assert(dcache_pkt == NULL); 407 dcache_pkt = new Packet(req, cmd, Packet::Broadcast); 408 dcache_pkt->allocate(); 409 dcache_pkt->set(data); 410 411 if (do_access) { 412 if (req->isMmapedIpr()) { 413 Tick delay; 414 dcache_pkt->set(htog(data)); 415 delay = TheISA::handleIprWrite(thread->getTC(), dcache_pkt); 416 new IprEvent(dcache_pkt, this, nextCycle(curTick + delay)); 417 _status = DcacheWaitResponse; 418 dcache_pkt = NULL; 419 } else if (!dcachePort.sendTiming(dcache_pkt)) { 420 _status = DcacheRetry; 421 } else { 422 _status = DcacheWaitResponse; 423 // memory system takes ownership of packet 424 dcache_pkt = NULL; 425 } 426 } 427 // This will need a new way to tell if it's hooked up to a cache or not. 428 if (req->isUncacheable()) 429 recordEvent("Uncached Write"); 430 } else { 431 delete req; 432 } 433 434 435 // If the write needs to have a fault on the access, consider calling 436 // changeStatus() and changing it to "bad addr write" or something. 437 return fault; 438} 439 440Fault 441TimingSimpleCPU::translateDataWriteAddr(Addr vaddr, Addr &paddr, 442 int size, unsigned flags) 443{ 444 Request *req = 445 new Request(0, vaddr, size, flags, thread->readPC(), cpuId, 0); 446 447 if (traceData) { 448 traceData->setAddr(vaddr); 449 } 450 451 Fault fault = thread->translateDataWriteReq(req); 452 453 if (fault == NoFault) 454 paddr = req->getPaddr(); 455 456 delete req; 457 return fault; 458} 459 460 461#ifndef DOXYGEN_SHOULD_SKIP_THIS 462template 463Fault 464TimingSimpleCPU::write(Twin32_t data, Addr addr, 465 unsigned flags, uint64_t *res); 466 467template 468Fault 469TimingSimpleCPU::write(Twin64_t data, Addr addr, 470 unsigned flags, uint64_t *res); 471 472template 473Fault 474TimingSimpleCPU::write(uint64_t data, Addr addr, 475 unsigned flags, uint64_t *res); 476 477template 478Fault 479TimingSimpleCPU::write(uint32_t data, Addr addr, 480 unsigned flags, uint64_t *res); 481 482template 483Fault 484TimingSimpleCPU::write(uint16_t data, Addr addr, 485 unsigned flags, uint64_t *res); 486 487template 488Fault 489TimingSimpleCPU::write(uint8_t data, Addr addr, 490 unsigned flags, uint64_t *res); 491 492#endif //DOXYGEN_SHOULD_SKIP_THIS 493 494template<> 495Fault 496TimingSimpleCPU::write(double data, Addr addr, unsigned flags, uint64_t *res) 497{ 498 return write(*(uint64_t*)&data, addr, flags, res); 499} 500 501template<> 502Fault 503TimingSimpleCPU::write(float data, Addr addr, unsigned flags, uint64_t *res) 504{ 505 return write(*(uint32_t*)&data, addr, flags, res); 506} 507 508 509template<> 510Fault 511TimingSimpleCPU::write(int32_t data, Addr addr, unsigned flags, uint64_t *res) 512{ 513 return write((uint32_t)data, addr, flags, res); 514} 515 516 517void 518TimingSimpleCPU::fetch() 519{ 520 DPRINTF(SimpleCPU, "Fetch\n"); 521 522 if (!curStaticInst || !curStaticInst->isDelayedCommit()) 523 checkForInterrupts(); 524 525 checkPcEventQueue(); 526 527 Request *ifetch_req = new Request(); 528 ifetch_req->setThreadContext(cpuId, /* thread ID */ 0); 529 Fault fault = setupFetchRequest(ifetch_req); 530 531 ifetch_pkt = new Packet(ifetch_req, MemCmd::ReadReq, Packet::Broadcast); 532 ifetch_pkt->dataStatic(&inst); 533 534 if (fault == NoFault) { 535 if (!icachePort.sendTiming(ifetch_pkt)) { 536 // Need to wait for retry 537 _status = IcacheRetry; 538 } else { 539 // Need to wait for cache to respond 540 _status = IcacheWaitResponse; 541 // ownership of packet transferred to memory system 542 ifetch_pkt = NULL; 543 } 544 } else { 545 delete ifetch_req; 546 delete ifetch_pkt; 547 // fetch fault: advance directly to next instruction (fault handler) 548 advanceInst(fault); 549 } 550 551 numCycles += tickToCycles(curTick - previousTick); 552 previousTick = curTick; 553} 554 555 556void 557TimingSimpleCPU::advanceInst(Fault fault) 558{ 559 advancePC(fault); 560 561 if (_status == Running) { 562 // kick off fetch of next instruction... callback from icache 563 // response will cause that instruction to be executed, 564 // keeping the CPU running. 565 fetch(); 566 } 567} 568 569 570void 571TimingSimpleCPU::completeIfetch(PacketPtr pkt) 572{ 573 DPRINTF(SimpleCPU, "Complete ICache Fetch\n"); 574 575 // received a response from the icache: execute the received 576 // instruction 577 assert(!pkt->isError()); 578 assert(_status == IcacheWaitResponse); 579 580 _status = Running; 581 582 numCycles += tickToCycles(curTick - previousTick); 583 previousTick = curTick; 584 585 if (getState() == SimObject::Draining) { 586 delete pkt->req; 587 delete pkt; 588 589 completeDrain(); 590 return; 591 } 592 593 preExecute(); 594 if (curStaticInst->isMemRef() && !curStaticInst->isDataPrefetch()) { 595 // load or store: just send to dcache 596 Fault fault = curStaticInst->initiateAcc(this, traceData); 597 if (_status != Running) { 598 // instruction will complete in dcache response callback 599 assert(_status == DcacheWaitResponse || _status == DcacheRetry); 600 assert(fault == NoFault); 601 } else { 602 if (fault == NoFault) { 603 // Note that ARM can have NULL packets if the instruction gets 604 // squashed due to predication 605 // early fail on store conditional: complete now 606 assert(dcache_pkt != NULL || THE_ISA == ARM_ISA); 607 608 fault = curStaticInst->completeAcc(dcache_pkt, this, 609 traceData); 610 if (dcache_pkt != NULL) 611 { 612 delete dcache_pkt->req; 613 delete dcache_pkt; 614 dcache_pkt = NULL; 615 } 616 617 // keep an instruction count 618 if (fault == NoFault) 619 countInst(); 620 } else if (traceData) { 621 // If there was a fault, we shouldn't trace this instruction. 622 delete traceData; 623 traceData = NULL; 624 } 625 626 postExecute(); 627 // @todo remove me after debugging with legion done 628 if (curStaticInst && (!curStaticInst->isMicroop() || 629 curStaticInst->isFirstMicroop())) 630 instCnt++; 631 advanceInst(fault); 632 } 633 } else { 634 // non-memory instruction: execute completely now 635 Fault fault = curStaticInst->execute(this, traceData); 636 637 // keep an instruction count 638 if (fault == NoFault) 639 countInst(); 640 else if (traceData) { 641 // If there was a fault, we shouldn't trace this instruction. 642 delete traceData; 643 traceData = NULL; 644 } 645 646 postExecute(); 647 // @todo remove me after debugging with legion done 648 if (curStaticInst && (!curStaticInst->isMicroop() || 649 curStaticInst->isFirstMicroop())) 650 instCnt++; 651 advanceInst(fault); 652 } 653 654 delete pkt->req; 655 delete pkt; 656} 657 658void 659TimingSimpleCPU::IcachePort::ITickEvent::process() 660{ 661 cpu->completeIfetch(pkt); 662} 663 664bool 665TimingSimpleCPU::IcachePort::recvTiming(PacketPtr pkt) 666{ 667 if (pkt->isResponse() && !pkt->wasNacked()) { 668 // delay processing of returned data until next CPU clock edge 669 Tick next_tick = cpu->nextCycle(curTick); 670 671 if (next_tick == curTick) 672 cpu->completeIfetch(pkt); 673 else 674 tickEvent.schedule(pkt, next_tick); 675 676 return true; 677 } 678 else if (pkt->wasNacked()) { 679 assert(cpu->_status == IcacheWaitResponse); 680 pkt->reinitNacked(); 681 if (!sendTiming(pkt)) { 682 cpu->_status = IcacheRetry; 683 cpu->ifetch_pkt = pkt; 684 } 685 } 686 //Snooping a Coherence Request, do nothing 687 return true; 688} 689 690void 691TimingSimpleCPU::IcachePort::recvRetry() 692{ 693 // we shouldn't get a retry unless we have a packet that we're 694 // waiting to transmit 695 assert(cpu->ifetch_pkt != NULL); 696 assert(cpu->_status == IcacheRetry); 697 PacketPtr tmp = cpu->ifetch_pkt; 698 if (sendTiming(tmp)) { 699 cpu->_status = IcacheWaitResponse; 700 cpu->ifetch_pkt = NULL; 701 } 702} 703 704void 705TimingSimpleCPU::completeDataAccess(PacketPtr pkt) 706{ 707 // received a response from the dcache: complete the load or store 708 // instruction 709 assert(!pkt->isError()); 710 assert(_status == DcacheWaitResponse); 711 _status = Running; 712 713 numCycles += tickToCycles(curTick - previousTick); 714 previousTick = curTick; 715 716 Fault fault = curStaticInst->completeAcc(pkt, this, traceData); 717 718 // keep an instruction count 719 if (fault == NoFault) 720 countInst(); 721 else if (traceData) { 722 // If there was a fault, we shouldn't trace this instruction. 723 delete traceData; 724 traceData = NULL; 725 } 726 727 if (pkt->isRead() && pkt->isLocked()) { 728 TheISA::handleLockedRead(thread, pkt->req); 729 } 730 731 delete pkt->req; 732 delete pkt; 733 734 postExecute(); 735 736 if (getState() == SimObject::Draining) { 737 advancePC(fault); 738 completeDrain(); 739 740 return; 741 } 742 743 advanceInst(fault); 744} 745 746 747void 748TimingSimpleCPU::completeDrain() 749{ 750 DPRINTF(Config, "Done draining\n"); 751 changeState(SimObject::Drained); 752 drainEvent->process(); 753} 754 755void 756TimingSimpleCPU::DcachePort::setPeer(Port *port) 757{ 758 Port::setPeer(port); 759 760#if FULL_SYSTEM 761 // Update the ThreadContext's memory ports (Functional/Virtual 762 // Ports) 763 cpu->tcBase()->connectMemPorts(); 764#endif 765} 766 767bool 768TimingSimpleCPU::DcachePort::recvTiming(PacketPtr pkt) 769{ 770 if (pkt->isResponse() && !pkt->wasNacked()) { 771 // delay processing of returned data until next CPU clock edge 772 Tick next_tick = cpu->nextCycle(curTick); 773 774 if (next_tick == curTick) 775 cpu->completeDataAccess(pkt); 776 else 777 tickEvent.schedule(pkt, next_tick); 778 779 return true; 780 } 781 else if (pkt->wasNacked()) { 782 assert(cpu->_status == DcacheWaitResponse); 783 pkt->reinitNacked(); 784 if (!sendTiming(pkt)) { 785 cpu->_status = DcacheRetry; 786 cpu->dcache_pkt = pkt; 787 } 788 } 789 //Snooping a Coherence Request, do nothing 790 return true; 791} 792 793void 794TimingSimpleCPU::DcachePort::DTickEvent::process() 795{ 796 cpu->completeDataAccess(pkt); 797} 798 799void 800TimingSimpleCPU::DcachePort::recvRetry() 801{ 802 // we shouldn't get a retry unless we have a packet that we're 803 // waiting to transmit 804 assert(cpu->dcache_pkt != NULL); 805 assert(cpu->_status == DcacheRetry); 806 PacketPtr tmp = cpu->dcache_pkt; 807 if (sendTiming(tmp)) { 808 cpu->_status = DcacheWaitResponse; 809 // memory system takes ownership of packet 810 cpu->dcache_pkt = NULL; 811 } 812} 813 814TimingSimpleCPU::IprEvent::IprEvent(Packet *_pkt, TimingSimpleCPU *_cpu, Tick t) 815 : Event(&mainEventQueue), pkt(_pkt), cpu(_cpu) 816{ 817 schedule(t); 818} 819 820void 821TimingSimpleCPU::IprEvent::process() 822{ 823 cpu->completeDataAccess(pkt); 824} 825 826const char * 827TimingSimpleCPU::IprEvent::description() const 828{ 829 return "Timing Simple CPU Delay IPR event"; 830} 831 832 833void 834TimingSimpleCPU::printAddr(Addr a) 835{ 836 dcachePort.printAddr(a); 837} 838 839 840//////////////////////////////////////////////////////////////////////// 841// 842// TimingSimpleCPU Simulation Object 843// 844TimingSimpleCPU * 845TimingSimpleCPUParams::create() 846{ 847 TimingSimpleCPU::Params *params = new TimingSimpleCPU::Params(); 848 params->name = name; 849 params->numberOfThreads = 1; 850 params->max_insts_any_thread = max_insts_any_thread; 851 params->max_insts_all_threads = max_insts_all_threads; 852 params->max_loads_any_thread = max_loads_any_thread; 853 params->max_loads_all_threads = max_loads_all_threads; 854 params->progress_interval = progress_interval; 855 params->deferRegistration = defer_registration; 856 params->clock = clock; 857 params->phase = phase; 858 params->functionTrace = function_trace; 859 params->functionTraceStart = function_trace_start; 860 params->system = system; 861 params->cpu_id = cpu_id; 862 params->tracer = tracer; 863 864 params->itb = itb; 865 params->dtb = dtb; 866#if FULL_SYSTEM 867 params->profile = profile; 868 params->do_quiesce = do_quiesce; 869 params->do_checkpoint_insts = do_checkpoint_insts; 870 params->do_statistics_insts = do_statistics_insts; 871#else 872 if (workload.size() != 1) 873 panic("only one workload allowed"); 874 params->process = workload[0]; 875#endif 876 877 TimingSimpleCPU *cpu = new TimingSimpleCPU(params); 878 return cpu; 879} 880