simple_thread.cc revision 8809:bb10807da889
1/* 2 * Copyright (c) 2001-2006 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 * Nathan Binkert 30 * Lisa Hsu 31 * Kevin Lim 32 */ 33 34#include <string> 35 36#include "arch/isa_traits.hh" 37#include "arch/kernel_stats.hh" 38#include "arch/stacktrace.hh" 39#include "arch/utility.hh" 40#include "base/callback.hh" 41#include "base/cprintf.hh" 42#include "base/output.hh" 43#include "base/trace.hh" 44#include "config/the_isa.hh" 45#include "cpu/base.hh" 46#include "cpu/profile.hh" 47#include "cpu/quiesce_event.hh" 48#include "cpu/simple_thread.hh" 49#include "cpu/thread_context.hh" 50#include "mem/fs_translating_port_proxy.hh" 51#include "mem/se_translating_port_proxy.hh" 52#include "params/BaseCPU.hh" 53#include "sim/full_system.hh" 54#include "sim/process.hh" 55#include "sim/serialize.hh" 56#include "sim/sim_exit.hh" 57#include "sim/system.hh" 58 59using namespace std; 60 61// constructor 62SimpleThread::SimpleThread(BaseCPU *_cpu, int _thread_num, Process *_process, 63 TheISA::TLB *_itb, TheISA::TLB *_dtb) 64 : ThreadState(_cpu, _thread_num, _process), itb(_itb), dtb(_dtb) 65{ 66 clearArchRegs(); 67 tc = new ProxyThreadContext<SimpleThread>(this); 68} 69SimpleThread::SimpleThread(BaseCPU *_cpu, int _thread_num, System *_sys, 70 TheISA::TLB *_itb, TheISA::TLB *_dtb, 71 bool use_kernel_stats) 72 : ThreadState(_cpu, _thread_num, NULL), system(_sys), itb(_itb), dtb(_dtb) 73{ 74 tc = new ProxyThreadContext<SimpleThread>(this); 75 76 quiesceEvent = new EndQuiesceEvent(tc); 77 78 clearArchRegs(); 79 80 if (baseCpu->params()->profile) { 81 profile = new FunctionProfile(system->kernelSymtab); 82 Callback *cb = 83 new MakeCallback<SimpleThread, 84 &SimpleThread::dumpFuncProfile>(this); 85 registerExitCallback(cb); 86 } 87 88 // let's fill with a dummy node for now so we don't get a segfault 89 // on the first cycle when there's no node available. 90 static ProfileNode dummyNode; 91 profileNode = &dummyNode; 92 profilePC = 3; 93 94 if (use_kernel_stats) 95 kernelStats = new TheISA::Kernel::Statistics(system); 96} 97 98SimpleThread::SimpleThread() 99 : ThreadState(NULL, -1, NULL) 100{ 101 tc = new ProxyThreadContext<SimpleThread>(this); 102} 103 104SimpleThread::~SimpleThread() 105{ 106 delete tc; 107} 108 109void 110SimpleThread::takeOverFrom(ThreadContext *oldContext) 111{ 112 // some things should already be set up 113 if (FullSystem) 114 assert(system == oldContext->getSystemPtr()); 115 assert(process == oldContext->getProcessPtr()); 116 117 copyState(oldContext); 118 if (FullSystem) { 119 EndQuiesceEvent *quiesce = oldContext->getQuiesceEvent(); 120 if (quiesce) { 121 // Point the quiesce event's TC at this TC so that it wakes up 122 // the proper CPU. 123 quiesce->tc = tc; 124 } 125 if (quiesceEvent) { 126 quiesceEvent->tc = tc; 127 } 128 129 TheISA::Kernel::Statistics *stats = oldContext->getKernelStats(); 130 if (stats) { 131 kernelStats = stats; 132 } 133 } 134 135 storeCondFailures = 0; 136 137 oldContext->setStatus(ThreadContext::Halted); 138} 139 140void 141SimpleThread::copyTC(ThreadContext *context) 142{ 143 copyState(context); 144 145 if (FullSystem) { 146 EndQuiesceEvent *quiesce = context->getQuiesceEvent(); 147 if (quiesce) { 148 quiesceEvent = quiesce; 149 } 150 TheISA::Kernel::Statistics *stats = context->getKernelStats(); 151 if (stats) { 152 kernelStats = stats; 153 } 154 } 155} 156 157void 158SimpleThread::copyState(ThreadContext *oldContext) 159{ 160 // copy over functional state 161 _status = oldContext->status(); 162 copyArchRegs(oldContext); 163 if (FullSystem) 164 funcExeInst = oldContext->readFuncExeInst(); 165 166 _threadId = oldContext->threadId(); 167 _contextId = oldContext->contextId(); 168} 169 170void 171SimpleThread::serialize(ostream &os) 172{ 173 ThreadState::serialize(os); 174 SERIALIZE_ARRAY(floatRegs.i, TheISA::NumFloatRegs); 175 SERIALIZE_ARRAY(intRegs, TheISA::NumIntRegs); 176 _pcState.serialize(os); 177 // thread_num and cpu_id are deterministic from the config 178 179 // 180 // Now must serialize all the ISA dependent state 181 // 182 isa.serialize(baseCpu, os); 183} 184 185 186void 187SimpleThread::unserialize(Checkpoint *cp, const std::string §ion) 188{ 189 ThreadState::unserialize(cp, section); 190 UNSERIALIZE_ARRAY(floatRegs.i, TheISA::NumFloatRegs); 191 UNSERIALIZE_ARRAY(intRegs, TheISA::NumIntRegs); 192 _pcState.unserialize(cp, section); 193 // thread_num and cpu_id are deterministic from the config 194 195 // 196 // Now must unserialize all the ISA dependent state 197 // 198 isa.unserialize(baseCpu, cp, section); 199} 200 201void 202SimpleThread::dumpFuncProfile() 203{ 204 std::ostream *os = simout.create(csprintf("profile.%s.dat", 205 baseCpu->name())); 206 profile->dump(tc, *os); 207} 208 209void 210SimpleThread::activate(int delay) 211{ 212 if (status() == ThreadContext::Active) 213 return; 214 215 lastActivate = curTick(); 216 217// if (status() == ThreadContext::Unallocated) { 218// cpu->activateWhenReady(_threadId); 219// return; 220// } 221 222 _status = ThreadContext::Active; 223 224 // status() == Suspended 225 baseCpu->activateContext(_threadId, delay); 226} 227 228void 229SimpleThread::suspend() 230{ 231 if (status() == ThreadContext::Suspended) 232 return; 233 234 lastActivate = curTick(); 235 lastSuspend = curTick(); 236 _status = ThreadContext::Suspended; 237 baseCpu->suspendContext(_threadId); 238} 239 240 241void 242SimpleThread::halt() 243{ 244 if (status() == ThreadContext::Halted) 245 return; 246 247 _status = ThreadContext::Halted; 248 baseCpu->haltContext(_threadId); 249} 250 251 252void 253SimpleThread::regStats(const string &name) 254{ 255 if (FullSystem && kernelStats) 256 kernelStats->regStats(name + ".kern"); 257} 258 259void 260SimpleThread::copyArchRegs(ThreadContext *src_tc) 261{ 262 TheISA::copyRegs(src_tc, tc); 263} 264 265