into ewok.(none):/home/gblack/m5/multiarch --HG-- extra : convert_revision : f6db244a66431dd6b8c5ba251ed02d76cd509cff
255 lines
6.6 KiB
C++
255 lines
6.6 KiB
C++
/*
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* Copyright (c) 2001-2006 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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#include <string>
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#include "cpu/base.hh"
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#include "cpu/exec_context.hh"
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#if FULL_SYSTEM
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#include "base/callback.hh"
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#include "base/cprintf.hh"
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#include "base/output.hh"
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#include "base/trace.hh"
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#include "cpu/profile.hh"
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#include "kern/kernel_stats.hh"
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#include "sim/serialize.hh"
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#include "sim/sim_exit.hh"
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#include "sim/system.hh"
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#include "arch/stacktrace.hh"
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#else
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#include "sim/process.hh"
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#endif
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using namespace std;
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// constructor
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#if FULL_SYSTEM
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ExecContext::ExecContext(BaseCPU *_cpu, int _thread_num, System *_sys,
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AlphaITB *_itb, AlphaDTB *_dtb,
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FunctionalMemory *_mem)
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: _status(ExecContext::Unallocated), cpu(_cpu), thread_num(_thread_num),
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cpu_id(-1), lastActivate(0), lastSuspend(0), mem(_mem), itb(_itb),
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dtb(_dtb), system(_sys), memctrl(_sys->memctrl), physmem(_sys->physmem),
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kernelBinning(system->kernelBinning), bin(kernelBinning->bin),
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fnbin(kernelBinning->fnbin), profile(NULL), quiesceEvent(this),
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func_exe_inst(0), storeCondFailures(0)
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{
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kernelStats = new Kernel::Statistics(this);
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memset(®s, 0, sizeof(RegFile));
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if (cpu->params->profile) {
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profile = new FunctionProfile(system->kernelSymtab);
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Callback *cb =
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new MakeCallback<ExecContext, &ExecContext::dumpFuncProfile>(this);
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registerExitCallback(cb);
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}
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// let's fill with a dummy node for now so we don't get a segfault
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// on the first cycle when there's no node available.
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static ProfileNode dummyNode;
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profileNode = &dummyNode;
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profilePC = 3;
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}
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#else
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ExecContext::ExecContext(BaseCPU *_cpu, int _thread_num,
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Process *_process, int _asid)
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: _status(ExecContext::Unallocated),
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cpu(_cpu), thread_num(_thread_num), cpu_id(-1), lastActivate(0),
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lastSuspend(0), process(_process), mem(process->getMemory()), asid(_asid),
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func_exe_inst(0), storeCondFailures(0)
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{
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memset(®s, 0, sizeof(RegFile));
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}
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ExecContext::ExecContext(BaseCPU *_cpu, int _thread_num,
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FunctionalMemory *_mem, int _asid)
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: cpu(_cpu), thread_num(_thread_num), process(0), mem(_mem), asid(_asid),
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func_exe_inst(0), storeCondFailures(0)
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{
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memset(®s, 0, sizeof(RegFile));
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}
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#endif
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ExecContext::~ExecContext()
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{
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#if FULL_SYSTEM
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delete kernelStats;
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#endif
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}
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#if FULL_SYSTEM
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void
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ExecContext::dumpFuncProfile()
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{
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std::ostream *os = simout.create(csprintf("profile.%s.dat", cpu->name()));
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profile->dump(this, *os);
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}
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ExecContext::EndQuiesceEvent::EndQuiesceEvent(ExecContext *_xc)
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: Event(&mainEventQueue), xc(_xc)
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{
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}
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void
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ExecContext::EndQuiesceEvent::process()
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{
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xc->activate();
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}
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const char*
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ExecContext::EndQuiesceEvent::description()
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{
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return "End Quiesce Event.";
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}
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#endif
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void
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ExecContext::takeOverFrom(ExecContext *oldContext)
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{
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// some things should already be set up
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assert(mem == oldContext->mem);
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#if FULL_SYSTEM
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assert(system == oldContext->system);
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#else
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assert(process == oldContext->process);
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#endif
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// copy over functional state
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_status = oldContext->_status;
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regs = oldContext->regs;
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cpu_id = oldContext->cpu_id;
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func_exe_inst = oldContext->func_exe_inst;
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storeCondFailures = 0;
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oldContext->_status = ExecContext::Unallocated;
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}
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void
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ExecContext::serialize(ostream &os)
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{
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SERIALIZE_ENUM(_status);
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regs.serialize(os);
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// thread_num and cpu_id are deterministic from the config
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SERIALIZE_SCALAR(func_exe_inst);
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SERIALIZE_SCALAR(inst);
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#if FULL_SYSTEM
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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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kernelStats->serialize(os);
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#endif
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}
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void
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ExecContext::unserialize(Checkpoint *cp, const std::string §ion)
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{
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UNSERIALIZE_ENUM(_status);
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regs.unserialize(cp, section);
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// thread_num and cpu_id are deterministic from the config
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UNSERIALIZE_SCALAR(func_exe_inst);
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UNSERIALIZE_SCALAR(inst);
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#if FULL_SYSTEM
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Tick quiesceEndTick;
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UNSERIALIZE_SCALAR(quiesceEndTick);
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if (quiesceEndTick)
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quiesceEvent.schedule(quiesceEndTick);
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kernelStats->unserialize(cp, section);
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#endif
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}
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void
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ExecContext::activate(int delay)
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{
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if (status() == Active)
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return;
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lastActivate = curTick;
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_status = Active;
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cpu->activateContext(thread_num, delay);
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}
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void
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ExecContext::suspend()
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{
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if (status() == Suspended)
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return;
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lastActivate = curTick;
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lastSuspend = curTick;
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/*
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#if FULL_SYSTEM
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// Don't change the status from active if there are pending interrupts
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if (cpu->check_interrupts()) {
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assert(status() == Active);
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return;
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}
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#endif
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*/
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_status = Suspended;
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cpu->suspendContext(thread_num);
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}
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void
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ExecContext::deallocate()
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{
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if (status() == Unallocated)
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return;
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_status = Unallocated;
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cpu->deallocateContext(thread_num);
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}
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void
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ExecContext::halt()
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{
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if (status() == Halted)
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return;
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_status = Halted;
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cpu->haltContext(thread_num);
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}
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void
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ExecContext::regStats(const string &name)
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{
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#if FULL_SYSTEM
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kernelStats->regStats(name + ".kern");
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#endif
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}
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