simple_thread.cc revision 6658
12SN/A/* 22188SN/A * Copyright (c) 2001-2006 The Regents of The University of Michigan 32SN/A * All rights reserved. 42SN/A * 52SN/A * Redistribution and use in source and binary forms, with or without 62SN/A * modification, are permitted provided that the following conditions are 72SN/A * met: redistributions of source code must retain the above copyright 82SN/A * notice, this list of conditions and the following disclaimer; 92SN/A * redistributions in binary form must reproduce the above copyright 102SN/A * notice, this list of conditions and the following disclaimer in the 112SN/A * documentation and/or other materials provided with the distribution; 122SN/A * neither the name of the copyright holders nor the names of its 132SN/A * contributors may be used to endorse or promote products derived from 142SN/A * this software without specific prior written permission. 152SN/A * 162SN/A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 172SN/A * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 182SN/A * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 192SN/A * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 202SN/A * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 212SN/A * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 222SN/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 232SN/A * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 242SN/A * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 252SN/A * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 262SN/A * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 272665SN/A * 282665SN/A * Authors: Steve Reinhardt 292665SN/A * Nathan Binkert 302665SN/A * Lisa Hsu 312665SN/A * Kevin Lim 322SN/A */ 332SN/A 342SN/A#include <string> 352SN/A 362465SN/A#include "arch/isa_traits.hh" 376658Snate@binkert.org#include "config/the_isa.hh" 381717SN/A#include "cpu/base.hh" 392683Sktlim@umich.edu#include "cpu/simple_thread.hh" 402680SN/A#include "cpu/thread_context.hh" 415529Snate@binkert.org#include "params/BaseCPU.hh" 422SN/A 431858SN/A#if FULL_SYSTEM 443565Sgblack@eecs.umich.edu#include "arch/kernel_stats.hh" 455529Snate@binkert.org#include "arch/stacktrace.hh" 461917SN/A#include "base/callback.hh" 471070SN/A#include "base/cprintf.hh" 481917SN/A#include "base/output.hh" 492188SN/A#include "base/trace.hh" 501917SN/A#include "cpu/profile.hh" 512290SN/A#include "cpu/quiesce_event.hh" 521070SN/A#include "sim/serialize.hh" 531917SN/A#include "sim/sim_exit.hh" 542SN/A#else 555529Snate@binkert.org#include "mem/translating_port.hh" 56360SN/A#include "sim/process.hh" 572519SN/A#include "sim/system.hh" 582SN/A#endif 592SN/A 602SN/Ausing namespace std; 612SN/A 622SN/A// constructor 631858SN/A#if FULL_SYSTEM 642683Sktlim@umich.eduSimpleThread::SimpleThread(BaseCPU *_cpu, int _thread_num, System *_sys, 656022Sgblack@eecs.umich.edu TheISA::TLB *_itb, TheISA::TLB *_dtb, 662683Sktlim@umich.edu bool use_kernel_stats) 676324Sgblack@eecs.umich.edu : ThreadState(_cpu, _thread_num), 686324Sgblack@eecs.umich.edu cpu(_cpu), system(_sys), itb(_itb), dtb(_dtb) 692521SN/A 702SN/A{ 712683Sktlim@umich.edu tc = new ProxyThreadContext<SimpleThread>(this); 722190SN/A 732680SN/A quiesceEvent = new EndQuiesceEvent(tc); 742290SN/A 756316Sgblack@eecs.umich.edu clearArchRegs(); 761917SN/A 775529Snate@binkert.org if (cpu->params()->profile) { 781982SN/A profile = new FunctionProfile(system->kernelSymtab); 791917SN/A Callback *cb = 802683Sktlim@umich.edu new MakeCallback<SimpleThread, 812683Sktlim@umich.edu &SimpleThread::dumpFuncProfile>(this); 821917SN/A registerExitCallback(cb); 831917SN/A } 841917SN/A 851917SN/A // let's fill with a dummy node for now so we don't get a segfault 861917SN/A // on the first cycle when there's no node available. 871917SN/A static ProfileNode dummyNode; 881917SN/A profileNode = &dummyNode; 891917SN/A profilePC = 3; 902521SN/A 915482Snate@binkert.org if (use_kernel_stats) 923548Sgblack@eecs.umich.edu kernelStats = new TheISA::Kernel::Statistics(system); 932SN/A} 942SN/A#else 954997Sgblack@eecs.umich.eduSimpleThread::SimpleThread(BaseCPU *_cpu, int _thread_num, Process *_process, 966331Sgblack@eecs.umich.edu TheISA::TLB *_itb, TheISA::TLB *_dtb) 976331Sgblack@eecs.umich.edu : ThreadState(_cpu, _thread_num, _process), 984997Sgblack@eecs.umich.edu cpu(_cpu), itb(_itb), dtb(_dtb) 992SN/A{ 1006316Sgblack@eecs.umich.edu clearArchRegs(); 1012683Sktlim@umich.edu tc = new ProxyThreadContext<SimpleThread>(this); 1022SN/A} 1032190SN/A 1042862Sktlim@umich.edu#endif 1052862Sktlim@umich.edu 1062864Sktlim@umich.eduSimpleThread::SimpleThread() 1072862Sktlim@umich.edu#if FULL_SYSTEM 1085712Shsul@eecs.umich.edu : ThreadState(NULL, -1) 1092862Sktlim@umich.edu#else 1106331Sgblack@eecs.umich.edu : ThreadState(NULL, -1, NULL) 1112862Sktlim@umich.edu#endif 1122190SN/A{ 1132683Sktlim@umich.edu tc = new ProxyThreadContext<SimpleThread>(this); 1142190SN/A} 1152190SN/A 1162683Sktlim@umich.eduSimpleThread::~SimpleThread() 1171070SN/A{ 1183486Sktlim@umich.edu#if FULL_SYSTEM 1193486Sktlim@umich.edu delete physPort; 1203486Sktlim@umich.edu delete virtPort; 1213486Sktlim@umich.edu#endif 1222680SN/A delete tc; 1231070SN/A} 1241070SN/A 1251917SN/Avoid 1262683Sktlim@umich.eduSimpleThread::takeOverFrom(ThreadContext *oldContext) 127180SN/A{ 128180SN/A // some things should already be set up 1291858SN/A#if FULL_SYSTEM 1302235SN/A assert(system == oldContext->getSystemPtr()); 131180SN/A#else 1322235SN/A assert(process == oldContext->getProcessPtr()); 133180SN/A#endif 134180SN/A 1352862Sktlim@umich.edu copyState(oldContext); 1362862Sktlim@umich.edu#if FULL_SYSTEM 1372313SN/A EndQuiesceEvent *quiesce = oldContext->getQuiesceEvent(); 1382313SN/A if (quiesce) { 1392680SN/A // Point the quiesce event's TC at this TC so that it wakes up 1402313SN/A // the proper CPU. 1412680SN/A quiesce->tc = tc; 1422313SN/A } 1432313SN/A if (quiesceEvent) { 1442680SN/A quiesceEvent->tc = tc; 1452313SN/A } 1462361SN/A 1473548Sgblack@eecs.umich.edu TheISA::Kernel::Statistics *stats = oldContext->getKernelStats(); 1482361SN/A if (stats) { 1492361SN/A kernelStats = stats; 1502361SN/A } 1512235SN/A#endif 152180SN/A 153180SN/A storeCondFailures = 0; 154180SN/A 1556029Ssteve.reinhardt@amd.com oldContext->setStatus(ThreadContext::Halted); 156180SN/A} 157180SN/A 1582SN/Avoid 1592864Sktlim@umich.eduSimpleThread::copyTC(ThreadContext *context) 1602864Sktlim@umich.edu{ 1612864Sktlim@umich.edu copyState(context); 1622864Sktlim@umich.edu 1632864Sktlim@umich.edu#if FULL_SYSTEM 1642864Sktlim@umich.edu EndQuiesceEvent *quiesce = context->getQuiesceEvent(); 1652864Sktlim@umich.edu if (quiesce) { 1662864Sktlim@umich.edu quiesceEvent = quiesce; 1672864Sktlim@umich.edu } 1683548Sgblack@eecs.umich.edu TheISA::Kernel::Statistics *stats = context->getKernelStats(); 1692864Sktlim@umich.edu if (stats) { 1702864Sktlim@umich.edu kernelStats = stats; 1712864Sktlim@umich.edu } 1722864Sktlim@umich.edu#endif 1732864Sktlim@umich.edu} 1742864Sktlim@umich.edu 1752864Sktlim@umich.eduvoid 1762862Sktlim@umich.eduSimpleThread::copyState(ThreadContext *oldContext) 1772862Sktlim@umich.edu{ 1782862Sktlim@umich.edu // copy over functional state 1792862Sktlim@umich.edu _status = oldContext->status(); 1802862Sktlim@umich.edu copyArchRegs(oldContext); 1812862Sktlim@umich.edu#if !FULL_SYSTEM 1822862Sktlim@umich.edu funcExeInst = oldContext->readFuncExeInst(); 1832862Sktlim@umich.edu#endif 1842915Sktlim@umich.edu inst = oldContext->getInst(); 1855714Shsul@eecs.umich.edu 1865715Shsul@eecs.umich.edu _threadId = oldContext->threadId(); 1875714Shsul@eecs.umich.edu _contextId = oldContext->contextId(); 1882862Sktlim@umich.edu} 1892862Sktlim@umich.edu 1902862Sktlim@umich.eduvoid 1912683Sktlim@umich.eduSimpleThread::serialize(ostream &os) 192217SN/A{ 1932862Sktlim@umich.edu ThreadState::serialize(os); 1946315Sgblack@eecs.umich.edu SERIALIZE_ARRAY(floatRegs.i, TheISA::NumFloatRegs); 1956316Sgblack@eecs.umich.edu SERIALIZE_ARRAY(intRegs, TheISA::NumIntRegs); 1966324Sgblack@eecs.umich.edu SERIALIZE_SCALAR(microPC); 1976324Sgblack@eecs.umich.edu SERIALIZE_SCALAR(nextMicroPC); 1986324Sgblack@eecs.umich.edu SERIALIZE_SCALAR(PC); 1996324Sgblack@eecs.umich.edu SERIALIZE_SCALAR(nextPC); 2006324Sgblack@eecs.umich.edu SERIALIZE_SCALAR(nextNPC); 201223SN/A // thread_num and cpu_id are deterministic from the config 202217SN/A} 203217SN/A 204217SN/A 205217SN/Avoid 2062683Sktlim@umich.eduSimpleThread::unserialize(Checkpoint *cp, const std::string §ion) 207217SN/A{ 2082862Sktlim@umich.edu ThreadState::unserialize(cp, section); 2096315Sgblack@eecs.umich.edu UNSERIALIZE_ARRAY(floatRegs.i, TheISA::NumFloatRegs); 2106316Sgblack@eecs.umich.edu UNSERIALIZE_ARRAY(intRegs, TheISA::NumIntRegs); 2116324Sgblack@eecs.umich.edu UNSERIALIZE_SCALAR(microPC); 2126324Sgblack@eecs.umich.edu UNSERIALIZE_SCALAR(nextMicroPC); 2136324Sgblack@eecs.umich.edu UNSERIALIZE_SCALAR(PC); 2146324Sgblack@eecs.umich.edu UNSERIALIZE_SCALAR(nextPC); 2156324Sgblack@eecs.umich.edu UNSERIALIZE_SCALAR(nextNPC); 216223SN/A // thread_num and cpu_id are deterministic from the config 217217SN/A} 218217SN/A 2192683Sktlim@umich.edu#if FULL_SYSTEM 2202683Sktlim@umich.eduvoid 2212683Sktlim@umich.eduSimpleThread::dumpFuncProfile() 2222683Sktlim@umich.edu{ 2232683Sktlim@umich.edu std::ostream *os = simout.create(csprintf("profile.%s.dat", cpu->name())); 2242683Sktlim@umich.edu profile->dump(tc, *os); 2252683Sktlim@umich.edu} 2262683Sktlim@umich.edu#endif 227217SN/A 228217SN/Avoid 2292683Sktlim@umich.eduSimpleThread::activate(int delay) 2302SN/A{ 2312680SN/A if (status() == ThreadContext::Active) 2322SN/A return; 2332SN/A 2342188SN/A lastActivate = curTick; 2352188SN/A 2364400Srdreslin@umich.edu// if (status() == ThreadContext::Unallocated) { 2375715Shsul@eecs.umich.edu// cpu->activateWhenReady(_threadId); 2385543Ssaidi@eecs.umich.edu// return; 2394400Srdreslin@umich.edu// } 2402290SN/A 2412680SN/A _status = ThreadContext::Active; 2422290SN/A 2432290SN/A // status() == Suspended 2445715Shsul@eecs.umich.edu cpu->activateContext(_threadId, delay); 245393SN/A} 246393SN/A 247393SN/Avoid 2482683Sktlim@umich.eduSimpleThread::suspend() 249393SN/A{ 2502680SN/A if (status() == ThreadContext::Suspended) 251393SN/A return; 252393SN/A 2532188SN/A lastActivate = curTick; 2542188SN/A lastSuspend = curTick; 2552188SN/A/* 2561858SN/A#if FULL_SYSTEM 2572SN/A // Don't change the status from active if there are pending interrupts 2585704Snate@binkert.org if (cpu->checkInterrupts()) { 2592680SN/A assert(status() == ThreadContext::Active); 2602SN/A return; 2612SN/A } 2622SN/A#endif 2632188SN/A*/ 2642680SN/A _status = ThreadContext::Suspended; 2655715Shsul@eecs.umich.edu cpu->suspendContext(_threadId); 2662SN/A} 2672SN/A 268393SN/A 269393SN/Avoid 2702683Sktlim@umich.eduSimpleThread::halt() 271393SN/A{ 2722680SN/A if (status() == ThreadContext::Halted) 273393SN/A return; 274393SN/A 2752680SN/A _status = ThreadContext::Halted; 2765715Shsul@eecs.umich.edu cpu->haltContext(_threadId); 277393SN/A} 278393SN/A 279393SN/A 280393SN/Avoid 2812683Sktlim@umich.eduSimpleThread::regStats(const string &name) 2822SN/A{ 2832330SN/A#if FULL_SYSTEM 2842341SN/A if (kernelStats) 2852341SN/A kernelStats->regStats(name + ".kern"); 2862330SN/A#endif 2872SN/A} 288716SN/A 289716SN/Avoid 2902683Sktlim@umich.eduSimpleThread::copyArchRegs(ThreadContext *src_tc) 2912190SN/A{ 2922680SN/A TheISA::copyRegs(src_tc, tc); 2932190SN/A} 2942190SN/A 295