a14013af3a
This patch unifies where initMemProxies is called, in the init() method of each BaseCPU subclass, before TheISA::initCPU is called. Moreover, it also ensures that initMemProxies is called in both full-system and syscall-emulation mode, thus unifying also across the modes. An additional check is added in the ThreadState to ensure that initMemProxies is only called once.
137 lines
4.5 KiB
C++
137 lines
4.5 KiB
C++
/*
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* Copyright (c) 2006 The Regents of The University of Michigan
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Authors: Kevin Lim
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*/
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#include "arch/kernel_stats.hh"
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#include "base/output.hh"
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#include "cpu/base.hh"
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#include "cpu/profile.hh"
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#include "cpu/quiesce_event.hh"
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#include "cpu/thread_state.hh"
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#include "mem/fs_translating_port_proxy.hh"
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#include "mem/port.hh"
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#include "mem/port_proxy.hh"
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#include "mem/se_translating_port_proxy.hh"
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#include "sim/full_system.hh"
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#include "sim/serialize.hh"
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#include "sim/system.hh"
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ThreadState::ThreadState(BaseCPU *cpu, ThreadID _tid, Process *_process)
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: numInst(0), numOp(0), numLoad(0), _status(ThreadContext::Halted),
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baseCpu(cpu), _threadId(_tid), lastActivate(0), lastSuspend(0),
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profile(NULL), profileNode(NULL), profilePC(0), quiesceEvent(NULL),
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kernelStats(NULL), process(_process), physProxy(NULL), virtProxy(NULL),
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proxy(NULL), funcExeInst(0), storeCondFailures(0)
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{
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}
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ThreadState::~ThreadState()
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{
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if (physProxy != NULL)
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delete physProxy;
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if (virtProxy != NULL)
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delete virtProxy;
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if (proxy != NULL)
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delete proxy;
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}
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void
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ThreadState::serialize(std::ostream &os)
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{
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SERIALIZE_ENUM(_status);
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// thread_num and cpu_id are deterministic from the config
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SERIALIZE_SCALAR(funcExeInst);
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if (!FullSystem)
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return;
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Tick quiesceEndTick = 0;
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if (quiesceEvent->scheduled())
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quiesceEndTick = quiesceEvent->when();
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SERIALIZE_SCALAR(quiesceEndTick);
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if (kernelStats)
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kernelStats->serialize(os);
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}
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void
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ThreadState::unserialize(Checkpoint *cp, const std::string §ion)
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{
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UNSERIALIZE_ENUM(_status);
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// thread_num and cpu_id are deterministic from the config
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UNSERIALIZE_SCALAR(funcExeInst);
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if (!FullSystem)
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return;
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Tick quiesceEndTick;
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UNSERIALIZE_SCALAR(quiesceEndTick);
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if (quiesceEndTick)
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baseCpu->schedule(quiesceEvent, quiesceEndTick);
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if (kernelStats)
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kernelStats->unserialize(cp, section);
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}
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void
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ThreadState::initMemProxies(ThreadContext *tc)
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{
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// The port proxies only refer to the data port on the CPU side
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// and can safely be done at init() time even if the CPU is not
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// connected, i.e. when restoring from a checkpoint and later
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// switching the CPU in.
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if (FullSystem) {
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assert(physProxy == NULL);
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// This cannot be done in the constructor as the thread state
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// itself is created in the base cpu constructor and the
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// getDataPort is a virtual function
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physProxy = new PortProxy(baseCpu->getDataPort());
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assert(virtProxy == NULL);
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virtProxy = new FSTranslatingPortProxy(tc);
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} else {
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assert(proxy == NULL);
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proxy = new SETranslatingPortProxy(baseCpu->getDataPort(),
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process,
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SETranslatingPortProxy::NextPage);
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}
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}
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void
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ThreadState::profileClear()
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{
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if (profile)
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profile->clear();
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}
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void
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ThreadState::profileSample()
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{
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if (profile)
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profile->sample(profileNode, profilePC);
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}
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