simple_thread.cc revision 11793:ef606668d247
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 "cpu/simple_thread.hh" 35 36#include <string> 37 38#include "arch/isa_traits.hh" 39#include "arch/kernel_stats.hh" 40#include "arch/stacktrace.hh" 41#include "arch/utility.hh" 42#include "base/callback.hh" 43#include "base/cprintf.hh" 44#include "base/output.hh" 45#include "base/trace.hh" 46#include "config/the_isa.hh" 47#include "cpu/base.hh" 48#include "cpu/profile.hh" 49#include "cpu/quiesce_event.hh" 50#include "cpu/thread_context.hh" 51#include "mem/fs_translating_port_proxy.hh" 52#include "mem/se_translating_port_proxy.hh" 53#include "params/BaseCPU.hh" 54#include "sim/faults.hh" 55#include "sim/full_system.hh" 56#include "sim/process.hh" 57#include "sim/serialize.hh" 58#include "sim/sim_exit.hh" 59#include "sim/system.hh" 60 61using namespace std; 62 63// constructor 64SimpleThread::SimpleThread(BaseCPU *_cpu, int _thread_num, System *_sys, 65 Process *_process, TheISA::TLB *_itb, 66 TheISA::TLB *_dtb, TheISA::ISA *_isa) 67 : ThreadState(_cpu, _thread_num, _process), isa(_isa), 68 predicate(false), system(_sys), 69 itb(_itb), dtb(_dtb) 70{ 71 clearArchRegs(); 72 tc = new ProxyThreadContext<SimpleThread>(this); 73 quiesceEvent = new EndQuiesceEvent(tc); 74} 75 76SimpleThread::SimpleThread(BaseCPU *_cpu, int _thread_num, System *_sys, 77 TheISA::TLB *_itb, TheISA::TLB *_dtb, 78 TheISA::ISA *_isa, bool use_kernel_stats) 79 : ThreadState(_cpu, _thread_num, NULL), isa(_isa), system(_sys), itb(_itb), 80 dtb(_dtb) 81{ 82 tc = new ProxyThreadContext<SimpleThread>(this); 83 84 quiesceEvent = new EndQuiesceEvent(tc); 85 86 clearArchRegs(); 87 88 if (baseCpu->params()->profile) { 89 profile = new FunctionProfile(system->kernelSymtab); 90 Callback *cb = 91 new MakeCallback<SimpleThread, 92 &SimpleThread::dumpFuncProfile>(this); 93 registerExitCallback(cb); 94 } 95 96 // let's fill with a dummy node for now so we don't get a segfault 97 // on the first cycle when there's no node available. 98 static ProfileNode dummyNode; 99 profileNode = &dummyNode; 100 profilePC = 3; 101 102 if (use_kernel_stats) 103 kernelStats = new TheISA::Kernel::Statistics(system); 104} 105 106SimpleThread::~SimpleThread() 107{ 108 delete tc; 109} 110 111void 112SimpleThread::takeOverFrom(ThreadContext *oldContext) 113{ 114 ::takeOverFrom(*tc, *oldContext); 115 decoder.takeOverFrom(oldContext->getDecoderPtr()); 116 117 kernelStats = oldContext->getKernelStats(); 118 funcExeInst = oldContext->readFuncExeInst(); 119 storeCondFailures = 0; 120} 121 122void 123SimpleThread::copyState(ThreadContext *oldContext) 124{ 125 // copy over functional state 126 _status = oldContext->status(); 127 copyArchRegs(oldContext); 128 if (FullSystem) 129 funcExeInst = oldContext->readFuncExeInst(); 130 131 _threadId = oldContext->threadId(); 132 _contextId = oldContext->contextId(); 133} 134 135void 136SimpleThread::serialize(CheckpointOut &cp) const 137{ 138 ThreadState::serialize(cp); 139 ::serialize(*tc, cp); 140} 141 142 143void 144SimpleThread::unserialize(CheckpointIn &cp) 145{ 146 ThreadState::unserialize(cp); 147 ::unserialize(*tc, cp); 148} 149 150void 151SimpleThread::startup() 152{ 153 isa->startup(tc); 154} 155 156void 157SimpleThread::dumpFuncProfile() 158{ 159 OutputStream *os(simout.create(csprintf("profile.%s.dat", baseCpu->name()))); 160 profile->dump(tc, *os->stream()); 161 simout.close(os); 162} 163 164void 165SimpleThread::activate() 166{ 167 if (status() == ThreadContext::Active) 168 return; 169 170 lastActivate = curTick(); 171 _status = ThreadContext::Active; 172 baseCpu->activateContext(_threadId); 173} 174 175void 176SimpleThread::suspend() 177{ 178 if (status() == ThreadContext::Suspended) 179 return; 180 181 lastActivate = curTick(); 182 lastSuspend = curTick(); 183 _status = ThreadContext::Suspended; 184 baseCpu->suspendContext(_threadId); 185} 186 187 188void 189SimpleThread::halt() 190{ 191 if (status() == ThreadContext::Halted) 192 return; 193 194 _status = ThreadContext::Halted; 195 baseCpu->haltContext(_threadId); 196} 197 198 199void 200SimpleThread::regStats(const string &name) 201{ 202 if (FullSystem && kernelStats) 203 kernelStats->regStats(name + ".kern"); 204} 205 206void 207SimpleThread::copyArchRegs(ThreadContext *src_tc) 208{ 209 TheISA::copyRegs(src_tc, tc); 210} 211 212// The following methods are defined in src/arch/alpha/ev5.cc for 213// Alpha. 214#if THE_ISA != ALPHA_ISA 215Fault 216SimpleThread::hwrei() 217{ 218 return NoFault; 219} 220 221bool 222SimpleThread::simPalCheck(int palFunc) 223{ 224 return true; 225} 226#endif 227