simple_thread.cc revision 9428
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, System *_sys, 63 Process *_process, TheISA::TLB *_itb, 64 TheISA::TLB *_dtb, TheISA::ISA *_isa) 65 : ThreadState(_cpu, _thread_num, _process), isa(_isa), system(_sys), 66 itb(_itb), dtb(_dtb) 67{ 68 clearArchRegs(); 69 tc = new ProxyThreadContext<SimpleThread>(this); 70} 71 72SimpleThread::SimpleThread(BaseCPU *_cpu, int _thread_num, System *_sys, 73 TheISA::TLB *_itb, TheISA::TLB *_dtb, 74 TheISA::ISA *_isa, bool use_kernel_stats) 75 : ThreadState(_cpu, _thread_num, NULL), isa(_isa), system(_sys), itb(_itb), 76 dtb(_dtb) 77{ 78 tc = new ProxyThreadContext<SimpleThread>(this); 79 80 quiesceEvent = new EndQuiesceEvent(tc); 81 82 clearArchRegs(); 83 84 if (baseCpu->params()->profile) { 85 profile = new FunctionProfile(system->kernelSymtab); 86 Callback *cb = 87 new MakeCallback<SimpleThread, 88 &SimpleThread::dumpFuncProfile>(this); 89 registerExitCallback(cb); 90 } 91 92 // let's fill with a dummy node for now so we don't get a segfault 93 // on the first cycle when there's no node available. 94 static ProfileNode dummyNode; 95 profileNode = &dummyNode; 96 profilePC = 3; 97 98 if (use_kernel_stats) 99 kernelStats = new TheISA::Kernel::Statistics(system); 100} 101 102SimpleThread::~SimpleThread() 103{ 104 delete tc; 105} 106 107void 108SimpleThread::takeOverFrom(ThreadContext *oldContext) 109{ 110 // some things should already be set up 111 if (FullSystem) 112 assert(system == oldContext->getSystemPtr()); 113 assert(process == oldContext->getProcessPtr()); 114 115 copyState(oldContext); 116 if (FullSystem) { 117 EndQuiesceEvent *quiesce = oldContext->getQuiesceEvent(); 118 if (quiesce) { 119 // Point the quiesce event's TC at this TC so that it wakes up 120 // the proper CPU. 121 quiesce->tc = tc; 122 } 123 if (quiesceEvent) { 124 quiesceEvent->tc = tc; 125 } 126 127 TheISA::Kernel::Statistics *stats = oldContext->getKernelStats(); 128 if (stats) { 129 kernelStats = stats; 130 } 131 } 132 133 storeCondFailures = 0; 134 135 oldContext->setStatus(ThreadContext::Halted); 136} 137 138void 139SimpleThread::copyTC(ThreadContext *context) 140{ 141 copyState(context); 142 143 if (FullSystem) { 144 EndQuiesceEvent *quiesce = context->getQuiesceEvent(); 145 if (quiesce) { 146 quiesceEvent = quiesce; 147 } 148 TheISA::Kernel::Statistics *stats = context->getKernelStats(); 149 if (stats) { 150 kernelStats = stats; 151 } 152 } 153} 154 155void 156SimpleThread::copyState(ThreadContext *oldContext) 157{ 158 // copy over functional state 159 _status = oldContext->status(); 160 copyArchRegs(oldContext); 161 if (FullSystem) 162 funcExeInst = oldContext->readFuncExeInst(); 163 164 _threadId = oldContext->threadId(); 165 _contextId = oldContext->contextId(); 166} 167 168void 169SimpleThread::serialize(ostream &os) 170{ 171 ThreadState::serialize(os); 172 ::serialize(*tc, os); 173} 174 175 176void 177SimpleThread::unserialize(Checkpoint *cp, const std::string §ion) 178{ 179 ThreadState::unserialize(cp, section); 180 ::unserialize(*tc, cp, section); 181} 182 183void 184SimpleThread::dumpFuncProfile() 185{ 186 std::ostream *os = simout.create(csprintf("profile.%s.dat", 187 baseCpu->name())); 188 profile->dump(tc, *os); 189} 190 191void 192SimpleThread::activate(Cycles delay) 193{ 194 if (status() == ThreadContext::Active) 195 return; 196 197 lastActivate = curTick(); 198 199// if (status() == ThreadContext::Unallocated) { 200// cpu->activateWhenReady(_threadId); 201// return; 202// } 203 204 _status = ThreadContext::Active; 205 206 // status() == Suspended 207 baseCpu->activateContext(_threadId, delay); 208} 209 210void 211SimpleThread::suspend() 212{ 213 if (status() == ThreadContext::Suspended) 214 return; 215 216 lastActivate = curTick(); 217 lastSuspend = curTick(); 218 _status = ThreadContext::Suspended; 219 baseCpu->suspendContext(_threadId); 220} 221 222 223void 224SimpleThread::halt() 225{ 226 if (status() == ThreadContext::Halted) 227 return; 228 229 _status = ThreadContext::Halted; 230 baseCpu->haltContext(_threadId); 231} 232 233 234void 235SimpleThread::regStats(const string &name) 236{ 237 if (FullSystem && kernelStats) 238 kernelStats->regStats(name + ".kern"); 239} 240 241void 242SimpleThread::copyArchRegs(ThreadContext *src_tc) 243{ 244 TheISA::copyRegs(src_tc, tc); 245} 246 247