thread_state.cc revision 8799:dac1e33e07b0
112855Sgabeblack@google.com/* 212855Sgabeblack@google.com * Copyright (c) 2006 The Regents of The University of Michigan 312855Sgabeblack@google.com * All rights reserved. 412855Sgabeblack@google.com * 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: Kevin Lim 29 */ 30 31#include "arch/kernel_stats.hh" 32#include "base/output.hh" 33#include "cpu/base.hh" 34#include "cpu/profile.hh" 35#include "cpu/quiesce_event.hh" 36#include "cpu/thread_state.hh" 37#include "mem/fs_translating_port_proxy.hh" 38#include "mem/port.hh" 39#include "mem/port_proxy.hh" 40#include "mem/se_translating_port_proxy.hh" 41#include "sim/full_system.hh" 42#include "sim/serialize.hh" 43#include "sim/system.hh" 44 45ThreadState::ThreadState(BaseCPU *cpu, ThreadID _tid, Process *_process) 46 : numInst(0), numLoad(0), _status(ThreadContext::Halted), 47 baseCpu(cpu), _threadId(_tid), lastActivate(0), lastSuspend(0), 48 profile(NULL), profileNode(NULL), profilePC(0), quiesceEvent(NULL), 49 kernelStats(NULL), process(_process), physProxy(NULL), virtProxy(NULL), 50 proxy(NULL), funcExeInst(0), storeCondFailures(0) 51{ 52} 53 54ThreadState::~ThreadState() 55{ 56 if (physProxy != NULL) 57 delete physProxy; 58 if (virtProxy != NULL) 59 delete virtProxy; 60 if (proxy != NULL) 61 delete proxy; 62} 63 64void 65ThreadState::serialize(std::ostream &os) 66{ 67 SERIALIZE_ENUM(_status); 68 // thread_num and cpu_id are deterministic from the config 69 SERIALIZE_SCALAR(funcExeInst); 70 71 if (FullSystem) { 72 Tick quiesceEndTick = 0; 73 if (quiesceEvent->scheduled()) 74 quiesceEndTick = quiesceEvent->when(); 75 SERIALIZE_SCALAR(quiesceEndTick); 76 if (kernelStats) 77 kernelStats->serialize(os); 78 } 79} 80 81void 82ThreadState::unserialize(Checkpoint *cp, const std::string §ion) 83{ 84 85 UNSERIALIZE_ENUM(_status); 86 // thread_num and cpu_id are deterministic from the config 87 UNSERIALIZE_SCALAR(funcExeInst); 88 89 if (FullSystem) { 90 Tick quiesceEndTick; 91 UNSERIALIZE_SCALAR(quiesceEndTick); 92 if (quiesceEndTick) 93 baseCpu->schedule(quiesceEvent, quiesceEndTick); 94 if (kernelStats) 95 kernelStats->unserialize(cp, section); 96 } 97} 98 99void 100ThreadState::initMemProxies(ThreadContext *tc) 101{ 102 // Note that this only refers to the port on the CPU side and can 103 // safely be done at init() time even if the CPU is not connected 104 // (i.e. due to restoring from a checkpoint and later switching 105 // in. 106 if (physProxy == NULL) 107 physProxy = new PortProxy(*baseCpu->getPort("dcache_port")); 108 if (virtProxy == NULL) 109 virtProxy = new FSTranslatingPortProxy(tc); 110} 111 112void 113ThreadState::profileClear() 114{ 115 if (profile) 116 profile->clear(); 117} 118 119void 120ThreadState::profileSample() 121{ 122 if (profile) 123 profile->sample(profileNode, profilePC); 124} 125 126SETranslatingPortProxy * 127ThreadState::getMemProxy() 128{ 129 if (proxy != NULL) 130 return proxy; 131 132 /* Use this port proxy to for syscall emulation writes to memory. */ 133 proxy = new SETranslatingPortProxy(*process->system->getSystemPort(), 134 process, 135 SETranslatingPortProxy::NextPage); 136 137 return proxy; 138} 139