simple_thread.cc revision 10537
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), 67 predicate(false), system(_sys), 68 itb(_itb), dtb(_dtb) 69{ 70 clearArchRegs(); 71 tc = new ProxyThreadContext<SimpleThread>(this); 72} 73 74SimpleThread::SimpleThread(BaseCPU *_cpu, int _thread_num, System *_sys, 75 TheISA::TLB *_itb, TheISA::TLB *_dtb, 76 TheISA::ISA *_isa, bool use_kernel_stats) 77 : ThreadState(_cpu, _thread_num, NULL), isa(_isa), system(_sys), itb(_itb), 78 dtb(_dtb) 79{ 80 tc = new ProxyThreadContext<SimpleThread>(this); 81 82 quiesceEvent = new EndQuiesceEvent(tc); 83 84 clearArchRegs(); 85 86 if (baseCpu->params()->profile) { 87 profile = new FunctionProfile(system->kernelSymtab); 88 Callback *cb = 89 new MakeCallback<SimpleThread, 90 &SimpleThread::dumpFuncProfile>(this); 91 registerExitCallback(cb); 92 } 93 94 // let's fill with a dummy node for now so we don't get a segfault 95 // on the first cycle when there's no node available. 96 static ProfileNode dummyNode; 97 profileNode = &dummyNode; 98 profilePC = 3; 99 100 if (use_kernel_stats) 101 kernelStats = new TheISA::Kernel::Statistics(system); 102} 103 104SimpleThread::~SimpleThread() 105{ 106 delete tc; 107} 108 109void 110SimpleThread::takeOverFrom(ThreadContext *oldContext) 111{ 112 ::takeOverFrom(*tc, *oldContext); 113 decoder.takeOverFrom(oldContext->getDecoderPtr()); 114 115 kernelStats = oldContext->getKernelStats(); 116 funcExeInst = oldContext->readFuncExeInst(); 117 storeCondFailures = 0; 118} 119 120void 121SimpleThread::copyState(ThreadContext *oldContext) 122{ 123 // copy over functional state 124 _status = oldContext->status(); 125 copyArchRegs(oldContext); 126 if (FullSystem) 127 funcExeInst = oldContext->readFuncExeInst(); 128 129 _threadId = oldContext->threadId(); 130 _contextId = oldContext->contextId(); 131} 132 133void 134SimpleThread::serialize(ostream &os) 135{ 136 ThreadState::serialize(os); 137 ::serialize(*tc, os); 138} 139 140 141void 142SimpleThread::unserialize(Checkpoint *cp, const std::string §ion) 143{ 144 ThreadState::unserialize(cp, section); 145 ::unserialize(*tc, cp, section); 146} 147 148void 149SimpleThread::startup() 150{ 151 isa->startup(tc); 152} 153 154void 155SimpleThread::dumpFuncProfile() 156{ 157 std::ostream *os = simout.create(csprintf("profile.%s.dat", 158 baseCpu->name())); 159 profile->dump(tc, *os); 160} 161 162void 163SimpleThread::activate() 164{ 165 if (status() == ThreadContext::Active) 166 return; 167 168 lastActivate = curTick(); 169 _status = ThreadContext::Active; 170 baseCpu->activateContext(_threadId); 171} 172 173void 174SimpleThread::suspend() 175{ 176 if (status() == ThreadContext::Suspended) 177 return; 178 179 lastActivate = curTick(); 180 lastSuspend = curTick(); 181 _status = ThreadContext::Suspended; 182 baseCpu->suspendContext(_threadId); 183} 184 185 186void 187SimpleThread::halt() 188{ 189 if (status() == ThreadContext::Halted) 190 return; 191 192 _status = ThreadContext::Halted; 193 baseCpu->haltContext(_threadId); 194} 195 196 197void 198SimpleThread::regStats(const string &name) 199{ 200 if (FullSystem && kernelStats) 201 kernelStats->regStats(name + ".kern"); 202} 203 204void 205SimpleThread::copyArchRegs(ThreadContext *src_tc) 206{ 207 TheISA::copyRegs(src_tc, tc); 208} 209 210// The following methods are defined in src/arch/alpha/ev5.cc for 211// Alpha. 212#if THE_ISA != ALPHA_ISA 213Fault 214SimpleThread::hwrei() 215{ 216 return NoFault; 217} 218 219bool 220SimpleThread::simPalCheck(int palFunc) 221{ 222 return true; 223} 224#endif 225