simple_thread.cc revision 10407
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/faults.hh" 54#include "sim/full_system.hh" 55#include "sim/process.hh" 56#include "sim/serialize.hh" 57#include "sim/sim_exit.hh" 58#include "sim/system.hh" 59 60using namespace std; 61 62// constructor 63SimpleThread::SimpleThread(BaseCPU *_cpu, int _thread_num, System *_sys, 64 Process *_process, TheISA::TLB *_itb, 65 TheISA::TLB *_dtb, TheISA::ISA *_isa) 66 : ThreadState(_cpu, _thread_num, _process), isa(_isa), system(_sys), 67 itb(_itb), dtb(_dtb) 68{ 69 clearArchRegs(); 70 tc = new ProxyThreadContext<SimpleThread>(this); 71} 72 73SimpleThread::SimpleThread(BaseCPU *_cpu, int _thread_num, System *_sys, 74 TheISA::TLB *_itb, TheISA::TLB *_dtb, 75 TheISA::ISA *_isa, bool use_kernel_stats) 76 : ThreadState(_cpu, _thread_num, NULL), isa(_isa), system(_sys), itb(_itb), 77 dtb(_dtb) 78{ 79 tc = new ProxyThreadContext<SimpleThread>(this); 80 81 quiesceEvent = new EndQuiesceEvent(tc); 82 83 clearArchRegs(); 84 85 if (baseCpu->params()->profile) { 86 profile = new FunctionProfile(system->kernelSymtab); 87 Callback *cb = 88 new MakeCallback<SimpleThread, 89 &SimpleThread::dumpFuncProfile>(this); 90 registerExitCallback(cb); 91 } 92 93 // let's fill with a dummy node for now so we don't get a segfault 94 // on the first cycle when there's no node available. 95 static ProfileNode dummyNode; 96 profileNode = &dummyNode; 97 profilePC = 3; 98 99 if (use_kernel_stats) 100 kernelStats = new TheISA::Kernel::Statistics(system); 101} 102 103SimpleThread::~SimpleThread() 104{ 105 delete tc; 106} 107 108void 109SimpleThread::takeOverFrom(ThreadContext *oldContext) 110{ 111 ::takeOverFrom(*tc, *oldContext); 112 decoder.takeOverFrom(oldContext->getDecoderPtr()); 113 114 kernelStats = oldContext->getKernelStats(); 115 funcExeInst = oldContext->readFuncExeInst(); 116 storeCondFailures = 0; 117} 118 119void 120SimpleThread::copyState(ThreadContext *oldContext) 121{ 122 // copy over functional state 123 _status = oldContext->status(); 124 copyArchRegs(oldContext); 125 if (FullSystem) 126 funcExeInst = oldContext->readFuncExeInst(); 127 128 _threadId = oldContext->threadId(); 129 _contextId = oldContext->contextId(); 130} 131 132void 133SimpleThread::serialize(ostream &os) 134{ 135 ThreadState::serialize(os); 136 ::serialize(*tc, os); 137} 138 139 140void 141SimpleThread::unserialize(Checkpoint *cp, const std::string §ion) 142{ 143 ThreadState::unserialize(cp, section); 144 ::unserialize(*tc, cp, section); 145} 146 147void 148SimpleThread::startup() 149{ 150 isa->startup(tc); 151} 152 153void 154SimpleThread::dumpFuncProfile() 155{ 156 std::ostream *os = simout.create(csprintf("profile.%s.dat", 157 baseCpu->name())); 158 profile->dump(tc, *os); 159} 160 161void 162SimpleThread::activate() 163{ 164 if (status() == ThreadContext::Active) 165 return; 166 167 lastActivate = curTick(); 168 _status = ThreadContext::Active; 169 baseCpu->activateContext(_threadId); 170} 171 172void 173SimpleThread::suspend() 174{ 175 if (status() == ThreadContext::Suspended) 176 return; 177 178 lastActivate = curTick(); 179 lastSuspend = curTick(); 180 _status = ThreadContext::Suspended; 181 baseCpu->suspendContext(_threadId); 182} 183 184 185void 186SimpleThread::halt() 187{ 188 if (status() == ThreadContext::Halted) 189 return; 190 191 _status = ThreadContext::Halted; 192 baseCpu->haltContext(_threadId); 193} 194 195 196void 197SimpleThread::regStats(const string &name) 198{ 199 if (FullSystem && kernelStats) 200 kernelStats->regStats(name + ".kern"); 201} 202 203void 204SimpleThread::copyArchRegs(ThreadContext *src_tc) 205{ 206 TheISA::copyRegs(src_tc, tc); 207} 208 209// The following methods are defined in src/arch/alpha/ev5.cc for 210// Alpha. 211#if THE_ISA != ALPHA_ISA 212Fault 213SimpleThread::hwrei() 214{ 215 return NoFault; 216} 217 218bool 219SimpleThread::simPalCheck(int palFunc) 220{ 221 return true; 222} 223#endif 224