2006-05-16 23:36:50 +02:00
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/*
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* Copyright (c) 2002-2005 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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2006-06-01 01:26:56 +02:00
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*
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* Authors: Steve Reinhardt
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2006-05-16 23:36:50 +02:00
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*/
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2006-10-08 19:53:24 +02:00
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#include "arch/locked_mem.hh"
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2006-05-16 23:36:50 +02:00
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#include "arch/utility.hh"
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#include "cpu/exetrace.hh"
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#include "cpu/simple/timing.hh"
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#include "mem/packet_impl.hh"
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#include "sim/builder.hh"
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2006-07-13 02:22:07 +02:00
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#include "sim/system.hh"
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2006-05-16 23:36:50 +02:00
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using namespace std;
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using namespace TheISA;
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2006-07-07 21:15:11 +02:00
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Port *
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TimingSimpleCPU::getPort(const std::string &if_name, int idx)
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{
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if (if_name == "dcache_port")
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return &dcachePort;
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else if (if_name == "icache_port")
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return &icachePort;
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else
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panic("No Such Port\n");
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}
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2006-05-16 23:36:50 +02:00
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void
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TimingSimpleCPU::init()
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{
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BaseCPU::init();
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#if FULL_SYSTEM
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2006-06-06 23:32:21 +02:00
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for (int i = 0; i < threadContexts.size(); ++i) {
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ThreadContext *tc = threadContexts[i];
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2006-05-16 23:36:50 +02:00
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// initialize CPU, including PC
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2006-06-06 23:32:21 +02:00
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TheISA::initCPU(tc, tc->readCpuId());
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2006-05-16 23:36:50 +02:00
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}
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#endif
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}
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Tick
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2006-05-19 04:32:21 +02:00
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TimingSimpleCPU::CpuPort::recvAtomic(Packet *pkt)
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2006-05-16 23:36:50 +02:00
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{
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panic("TimingSimpleCPU doesn't expect recvAtomic callback!");
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return curTick;
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}
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void
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2006-05-19 04:32:21 +02:00
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TimingSimpleCPU::CpuPort::recvFunctional(Packet *pkt)
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2006-05-16 23:36:50 +02:00
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{
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2006-10-09 02:30:42 +02:00
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//No internal storage to update, jusst return
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return;
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2006-05-16 23:36:50 +02:00
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}
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void
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TimingSimpleCPU::CpuPort::recvStatusChange(Status status)
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{
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2006-05-19 04:54:19 +02:00
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if (status == RangeChange)
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return;
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2006-05-16 23:36:50 +02:00
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panic("TimingSimpleCPU doesn't expect recvStatusChange callback!");
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}
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2006-07-21 01:00:40 +02:00
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void
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TimingSimpleCPU::CpuPort::TickEvent::schedule(Packet *_pkt, Tick t)
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{
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pkt = _pkt;
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Event::schedule(t);
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}
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2006-05-16 23:36:50 +02:00
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TimingSimpleCPU::TimingSimpleCPU(Params *p)
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2006-10-08 19:53:24 +02:00
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: BaseSimpleCPU(p), icachePort(this, p->clock), dcachePort(this, p->clock),
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cpu_id(p->cpu_id)
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2006-05-16 23:36:50 +02:00
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{
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_status = Idle;
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ifetch_pkt = dcache_pkt = NULL;
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2006-07-05 23:59:33 +02:00
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drainEvent = NULL;
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2006-07-07 21:38:15 +02:00
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fetchEvent = NULL;
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2006-07-13 02:22:07 +02:00
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changeState(SimObject::Running);
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2006-05-16 23:36:50 +02:00
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}
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TimingSimpleCPU::~TimingSimpleCPU()
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{
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}
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void
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TimingSimpleCPU::serialize(ostream &os)
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{
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2006-07-12 23:11:57 +02:00
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SimObject::State so_state = SimObject::getState();
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SERIALIZE_ENUM(so_state);
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2006-06-30 01:45:24 +02:00
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BaseSimpleCPU::serialize(os);
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2006-05-16 23:36:50 +02:00
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}
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void
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TimingSimpleCPU::unserialize(Checkpoint *cp, const string §ion)
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{
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2006-07-12 23:11:57 +02:00
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SimObject::State so_state;
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UNSERIALIZE_ENUM(so_state);
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2006-06-30 01:45:24 +02:00
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BaseSimpleCPU::unserialize(cp, section);
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}
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2006-07-13 02:22:07 +02:00
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unsigned int
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2006-07-05 23:59:33 +02:00
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TimingSimpleCPU::drain(Event *drain_event)
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2006-06-30 01:45:24 +02:00
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{
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2006-07-05 23:59:33 +02:00
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// TimingSimpleCPU is ready to drain if it's not waiting for
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2006-06-30 01:45:24 +02:00
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// an access to complete.
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if (status() == Idle || status() == Running || status() == SwitchedOut) {
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2006-07-13 02:22:07 +02:00
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changeState(SimObject::Drained);
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return 0;
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2006-06-30 01:45:24 +02:00
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} else {
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2006-07-05 23:59:33 +02:00
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changeState(SimObject::Draining);
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drainEvent = drain_event;
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2006-07-13 02:22:07 +02:00
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return 1;
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2006-06-30 01:45:24 +02:00
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}
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2006-05-16 23:36:50 +02:00
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}
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void
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2006-06-30 01:45:24 +02:00
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TimingSimpleCPU::resume()
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2006-05-16 23:36:50 +02:00
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{
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2006-06-30 01:45:24 +02:00
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if (_status != SwitchedOut && _status != Idle) {
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2006-10-12 00:44:48 +02:00
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assert(system->getMemoryMode() == System::Timing);
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2006-07-07 21:38:15 +02:00
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// Delete the old event if it existed.
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if (fetchEvent) {
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2006-07-12 23:11:57 +02:00
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if (fetchEvent->scheduled())
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fetchEvent->deschedule();
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2006-07-07 21:38:15 +02:00
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delete fetchEvent;
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}
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fetchEvent =
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new EventWrapper<TimingSimpleCPU, &TimingSimpleCPU::fetch>(this, false);
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fetchEvent->schedule(curTick);
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2006-05-16 23:36:50 +02:00
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}
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2006-06-30 01:45:24 +02:00
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2006-07-13 02:22:07 +02:00
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changeState(SimObject::Running);
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2006-06-30 01:45:24 +02:00
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}
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void
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TimingSimpleCPU::switchOut()
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{
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assert(status() == Running || status() == Idle);
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_status = SwitchedOut;
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2006-07-07 21:38:15 +02:00
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// If we've been scheduled to resume but are then told to switch out,
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// we'll need to cancel it.
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if (fetchEvent && fetchEvent->scheduled())
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fetchEvent->deschedule();
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2006-05-16 23:36:50 +02:00
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}
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void
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TimingSimpleCPU::takeOverFrom(BaseCPU *oldCPU)
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{
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BaseCPU::takeOverFrom(oldCPU);
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2006-06-06 23:32:21 +02:00
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// if any of this CPU's ThreadContexts are active, mark the CPU as
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2006-05-16 23:36:50 +02:00
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// running and schedule its tick event.
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2006-06-06 23:32:21 +02:00
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for (int i = 0; i < threadContexts.size(); ++i) {
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ThreadContext *tc = threadContexts[i];
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if (tc->status() == ThreadContext::Active && _status != Running) {
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2006-05-16 23:36:50 +02:00
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_status = Running;
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break;
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}
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}
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2006-10-12 00:44:48 +02:00
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if (_status != Running) {
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_status = Idle;
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}
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2006-05-16 23:36:50 +02:00
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}
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void
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TimingSimpleCPU::activateContext(int thread_num, int delay)
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{
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assert(thread_num == 0);
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2006-06-07 21:29:53 +02:00
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assert(thread);
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2006-05-16 23:36:50 +02:00
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assert(_status == Idle);
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notIdleFraction++;
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_status = Running;
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// kick things off by initiating the fetch of the next instruction
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2006-07-07 21:38:15 +02:00
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fetchEvent =
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new EventWrapper<TimingSimpleCPU, &TimingSimpleCPU::fetch>(this, false);
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fetchEvent->schedule(curTick + cycles(delay));
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2006-05-16 23:36:50 +02:00
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}
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void
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TimingSimpleCPU::suspendContext(int thread_num)
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{
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assert(thread_num == 0);
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2006-06-07 21:29:53 +02:00
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assert(thread);
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2006-05-16 23:36:50 +02:00
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assert(_status == Running);
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2006-05-26 20:33:43 +02:00
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// just change status to Idle... if status != Running,
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// completeInst() will not initiate fetch of next instruction.
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2006-05-16 23:36:50 +02:00
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notIdleFraction--;
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_status = Idle;
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}
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template <class T>
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Fault
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TimingSimpleCPU::read(Addr addr, T &data, unsigned flags)
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{
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2006-10-08 19:43:31 +02:00
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Request *req =
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new Request(/* asid */ 0, addr, sizeof(T), flags, thread->readPC(),
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2006-10-08 19:53:24 +02:00
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cpu_id, /* thread ID */ 0);
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2006-05-16 23:36:50 +02:00
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if (traceData) {
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2006-10-08 19:43:31 +02:00
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traceData->setAddr(req->getVaddr());
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2006-05-16 23:36:50 +02:00
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}
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// translate to physical address
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2006-10-08 19:43:31 +02:00
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Fault fault = thread->translateDataReadReq(req);
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2006-05-16 23:36:50 +02:00
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// Now do the access.
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if (fault == NoFault) {
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2006-10-08 19:43:31 +02:00
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Packet *pkt =
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new Packet(req, Packet::ReadReq, Packet::Broadcast);
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pkt->dataDynamic<T>(new T);
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2006-05-16 23:36:50 +02:00
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2006-10-08 19:43:31 +02:00
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if (!dcachePort.sendTiming(pkt)) {
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2006-05-16 23:36:50 +02:00
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_status = DcacheRetry;
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2006-10-08 19:43:31 +02:00
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dcache_pkt = pkt;
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2006-05-16 23:36:50 +02:00
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} else {
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_status = DcacheWaitResponse;
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2006-10-08 19:43:31 +02:00
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// memory system takes ownership of packet
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2006-05-16 23:36:50 +02:00
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dcache_pkt = NULL;
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}
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}
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// This will need a new way to tell if it has a dcache attached.
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2006-10-08 23:48:24 +02:00
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if (req->isUncacheable())
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2006-05-16 23:36:50 +02:00
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recordEvent("Uncached Read");
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return fault;
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}
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#ifndef DOXYGEN_SHOULD_SKIP_THIS
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template
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Fault
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TimingSimpleCPU::read(Addr addr, uint64_t &data, unsigned flags);
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template
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Fault
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TimingSimpleCPU::read(Addr addr, uint32_t &data, unsigned flags);
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template
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Fault
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TimingSimpleCPU::read(Addr addr, uint16_t &data, unsigned flags);
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template
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Fault
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TimingSimpleCPU::read(Addr addr, uint8_t &data, unsigned flags);
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#endif //DOXYGEN_SHOULD_SKIP_THIS
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template<>
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Fault
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TimingSimpleCPU::read(Addr addr, double &data, unsigned flags)
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{
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return read(addr, *(uint64_t*)&data, flags);
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}
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template<>
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Fault
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TimingSimpleCPU::read(Addr addr, float &data, unsigned flags)
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{
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return read(addr, *(uint32_t*)&data, flags);
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}
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template<>
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Fault
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TimingSimpleCPU::read(Addr addr, int32_t &data, unsigned flags)
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{
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return read(addr, (uint32_t&)data, flags);
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}
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template <class T>
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Fault
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TimingSimpleCPU::write(T data, Addr addr, unsigned flags, uint64_t *res)
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{
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2006-10-08 19:43:31 +02:00
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Request *req =
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new Request(/* asid */ 0, addr, sizeof(T), flags, thread->readPC(),
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2006-10-08 19:53:24 +02:00
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cpu_id, /* thread ID */ 0);
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2006-05-16 23:36:50 +02:00
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// translate to physical address
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2006-10-08 19:43:31 +02:00
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Fault fault = thread->translateDataWriteReq(req);
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2006-05-16 23:36:50 +02:00
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// Now do the access.
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if (fault == NoFault) {
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2006-10-08 19:43:31 +02:00
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assert(dcache_pkt == NULL);
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dcache_pkt = new Packet(req, Packet::WriteReq, Packet::Broadcast);
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dcache_pkt->allocate();
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dcache_pkt->set(data);
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2006-05-16 23:36:50 +02:00
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|
|
2006-10-08 19:53:24 +02:00
|
|
|
bool do_access = true; // flag to suppress cache access
|
|
|
|
|
|
|
|
if (req->isLocked()) {
|
|
|
|
do_access = TheISA::handleLockedWrite(thread, req);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (do_access) {
|
|
|
|
if (!dcachePort.sendTiming(dcache_pkt)) {
|
|
|
|
_status = DcacheRetry;
|
|
|
|
} else {
|
|
|
|
_status = DcacheWaitResponse;
|
|
|
|
// memory system takes ownership of packet
|
|
|
|
dcache_pkt = NULL;
|
|
|
|
}
|
2006-05-16 23:36:50 +02:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
// This will need a new way to tell if it's hooked up to a cache or not.
|
2006-10-08 23:48:24 +02:00
|
|
|
if (req->isUncacheable())
|
2006-05-16 23:36:50 +02:00
|
|
|
recordEvent("Uncached Write");
|
|
|
|
|
|
|
|
// If the write needs to have a fault on the access, consider calling
|
|
|
|
// changeStatus() and changing it to "bad addr write" or something.
|
|
|
|
return fault;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
#ifndef DOXYGEN_SHOULD_SKIP_THIS
|
|
|
|
template
|
|
|
|
Fault
|
|
|
|
TimingSimpleCPU::write(uint64_t data, Addr addr,
|
|
|
|
unsigned flags, uint64_t *res);
|
|
|
|
|
|
|
|
template
|
|
|
|
Fault
|
|
|
|
TimingSimpleCPU::write(uint32_t data, Addr addr,
|
|
|
|
unsigned flags, uint64_t *res);
|
|
|
|
|
|
|
|
template
|
|
|
|
Fault
|
|
|
|
TimingSimpleCPU::write(uint16_t data, Addr addr,
|
|
|
|
unsigned flags, uint64_t *res);
|
|
|
|
|
|
|
|
template
|
|
|
|
Fault
|
|
|
|
TimingSimpleCPU::write(uint8_t data, Addr addr,
|
|
|
|
unsigned flags, uint64_t *res);
|
|
|
|
|
|
|
|
#endif //DOXYGEN_SHOULD_SKIP_THIS
|
|
|
|
|
|
|
|
template<>
|
|
|
|
Fault
|
|
|
|
TimingSimpleCPU::write(double data, Addr addr, unsigned flags, uint64_t *res)
|
|
|
|
{
|
|
|
|
return write(*(uint64_t*)&data, addr, flags, res);
|
|
|
|
}
|
|
|
|
|
|
|
|
template<>
|
|
|
|
Fault
|
|
|
|
TimingSimpleCPU::write(float data, Addr addr, unsigned flags, uint64_t *res)
|
|
|
|
{
|
|
|
|
return write(*(uint32_t*)&data, addr, flags, res);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
template<>
|
|
|
|
Fault
|
|
|
|
TimingSimpleCPU::write(int32_t data, Addr addr, unsigned flags, uint64_t *res)
|
|
|
|
{
|
|
|
|
return write((uint32_t)data, addr, flags, res);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
TimingSimpleCPU::fetch()
|
|
|
|
{
|
2006-05-19 04:54:19 +02:00
|
|
|
checkForInterrupts();
|
|
|
|
|
2006-05-31 06:12:29 +02:00
|
|
|
Request *ifetch_req = new Request();
|
2006-10-08 19:53:24 +02:00
|
|
|
ifetch_req->setThreadContext(cpu_id, /* thread ID */ 0);
|
2006-05-31 04:30:42 +02:00
|
|
|
Fault fault = setupFetchRequest(ifetch_req);
|
2006-05-16 23:36:50 +02:00
|
|
|
|
2006-05-26 20:17:33 +02:00
|
|
|
ifetch_pkt = new Packet(ifetch_req, Packet::ReadReq, Packet::Broadcast);
|
2006-05-16 23:36:50 +02:00
|
|
|
ifetch_pkt->dataStatic(&inst);
|
|
|
|
|
|
|
|
if (fault == NoFault) {
|
2006-05-19 04:32:21 +02:00
|
|
|
if (!icachePort.sendTiming(ifetch_pkt)) {
|
2006-05-16 23:36:50 +02:00
|
|
|
// Need to wait for retry
|
|
|
|
_status = IcacheRetry;
|
|
|
|
} else {
|
|
|
|
// Need to wait for cache to respond
|
|
|
|
_status = IcacheWaitResponse;
|
|
|
|
// ownership of packet transferred to memory system
|
|
|
|
ifetch_pkt = NULL;
|
|
|
|
}
|
|
|
|
} else {
|
2006-05-26 20:33:43 +02:00
|
|
|
// fetch fault: advance directly to next instruction (fault handler)
|
|
|
|
advanceInst(fault);
|
2006-05-16 23:36:50 +02:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void
|
2006-05-26 20:33:43 +02:00
|
|
|
TimingSimpleCPU::advanceInst(Fault fault)
|
2006-05-16 23:36:50 +02:00
|
|
|
{
|
|
|
|
advancePC(fault);
|
|
|
|
|
2006-05-19 04:54:19 +02:00
|
|
|
if (_status == Running) {
|
|
|
|
// kick off fetch of next instruction... callback from icache
|
|
|
|
// response will cause that instruction to be executed,
|
|
|
|
// keeping the CPU running.
|
|
|
|
fetch();
|
|
|
|
}
|
2006-05-16 23:36:50 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void
|
2006-05-26 20:33:43 +02:00
|
|
|
TimingSimpleCPU::completeIfetch(Packet *pkt)
|
2006-05-16 23:36:50 +02:00
|
|
|
{
|
|
|
|
// received a response from the icache: execute the received
|
|
|
|
// instruction
|
2006-05-26 20:33:43 +02:00
|
|
|
assert(pkt->result == Packet::Success);
|
2006-05-16 23:36:50 +02:00
|
|
|
assert(_status == IcacheWaitResponse);
|
2006-06-30 01:45:24 +02:00
|
|
|
|
2006-05-16 23:36:50 +02:00
|
|
|
_status = Running;
|
2006-05-26 20:33:43 +02:00
|
|
|
|
|
|
|
delete pkt->req;
|
|
|
|
delete pkt;
|
|
|
|
|
2006-07-05 23:59:33 +02:00
|
|
|
if (getState() == SimObject::Draining) {
|
|
|
|
completeDrain();
|
2006-06-30 01:45:24 +02:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2006-05-16 23:36:50 +02:00
|
|
|
preExecute();
|
2006-05-26 20:33:43 +02:00
|
|
|
if (curStaticInst->isMemRef() && !curStaticInst->isDataPrefetch()) {
|
2006-05-16 23:36:50 +02:00
|
|
|
// load or store: just send to dcache
|
|
|
|
Fault fault = curStaticInst->initiateAcc(this, traceData);
|
2006-10-08 19:53:24 +02:00
|
|
|
if (_status != Running) {
|
|
|
|
// instruction will complete in dcache response callback
|
|
|
|
assert(_status == DcacheWaitResponse || _status == DcacheRetry);
|
|
|
|
assert(fault == NoFault);
|
2006-05-26 20:33:43 +02:00
|
|
|
} else {
|
2006-10-08 19:53:24 +02:00
|
|
|
if (fault == NoFault) {
|
|
|
|
// early fail on store conditional: complete now
|
|
|
|
assert(dcache_pkt != NULL);
|
|
|
|
fault = curStaticInst->completeAcc(dcache_pkt, this,
|
|
|
|
traceData);
|
|
|
|
delete dcache_pkt->req;
|
|
|
|
delete dcache_pkt;
|
|
|
|
dcache_pkt = NULL;
|
|
|
|
}
|
2006-05-26 20:33:43 +02:00
|
|
|
postExecute();
|
|
|
|
advanceInst(fault);
|
|
|
|
}
|
2006-05-16 23:36:50 +02:00
|
|
|
} else {
|
|
|
|
// non-memory instruction: execute completely now
|
|
|
|
Fault fault = curStaticInst->execute(this, traceData);
|
2006-05-26 20:33:43 +02:00
|
|
|
postExecute();
|
|
|
|
advanceInst(fault);
|
2006-05-16 23:36:50 +02:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2006-07-21 01:00:40 +02:00
|
|
|
void
|
|
|
|
TimingSimpleCPU::IcachePort::ITickEvent::process()
|
|
|
|
{
|
|
|
|
cpu->completeIfetch(pkt);
|
|
|
|
}
|
2006-05-16 23:36:50 +02:00
|
|
|
|
|
|
|
bool
|
2006-05-19 04:32:21 +02:00
|
|
|
TimingSimpleCPU::IcachePort::recvTiming(Packet *pkt)
|
2006-05-16 23:36:50 +02:00
|
|
|
{
|
2006-10-08 19:53:24 +02:00
|
|
|
// delay processing of returned data until next CPU clock edge
|
2006-07-21 01:00:40 +02:00
|
|
|
Tick time = pkt->req->getTime();
|
|
|
|
while (time < curTick)
|
|
|
|
time += lat;
|
|
|
|
|
|
|
|
if (time == curTick)
|
|
|
|
cpu->completeIfetch(pkt);
|
|
|
|
else
|
|
|
|
tickEvent.schedule(pkt, time);
|
|
|
|
|
2006-05-16 23:36:50 +02:00
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
2006-05-31 00:57:42 +02:00
|
|
|
void
|
2006-05-16 23:36:50 +02:00
|
|
|
TimingSimpleCPU::IcachePort::recvRetry()
|
|
|
|
{
|
|
|
|
// we shouldn't get a retry unless we have a packet that we're
|
|
|
|
// waiting to transmit
|
|
|
|
assert(cpu->ifetch_pkt != NULL);
|
|
|
|
assert(cpu->_status == IcacheRetry);
|
|
|
|
Packet *tmp = cpu->ifetch_pkt;
|
2006-05-31 00:57:42 +02:00
|
|
|
if (sendTiming(tmp)) {
|
|
|
|
cpu->_status = IcacheWaitResponse;
|
|
|
|
cpu->ifetch_pkt = NULL;
|
|
|
|
}
|
2006-05-16 23:36:50 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
TimingSimpleCPU::completeDataAccess(Packet *pkt)
|
|
|
|
{
|
|
|
|
// received a response from the dcache: complete the load or store
|
|
|
|
// instruction
|
2006-05-26 20:17:33 +02:00
|
|
|
assert(pkt->result == Packet::Success);
|
2006-05-16 23:36:50 +02:00
|
|
|
assert(_status == DcacheWaitResponse);
|
|
|
|
_status = Running;
|
|
|
|
|
|
|
|
Fault fault = curStaticInst->completeAcc(pkt, this, traceData);
|
|
|
|
|
2006-10-08 19:53:24 +02:00
|
|
|
if (pkt->isRead() && pkt->req->isLocked()) {
|
|
|
|
TheISA::handleLockedRead(thread, pkt->req);
|
|
|
|
}
|
|
|
|
|
2006-05-26 20:33:43 +02:00
|
|
|
delete pkt->req;
|
|
|
|
delete pkt;
|
|
|
|
|
2006-10-12 00:44:48 +02:00
|
|
|
if (getState() == SimObject::Draining) {
|
|
|
|
advancePC(fault);
|
|
|
|
completeDrain();
|
|
|
|
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2006-05-26 20:33:43 +02:00
|
|
|
postExecute();
|
|
|
|
advanceInst(fault);
|
2006-05-16 23:36:50 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
|
2006-06-30 01:45:24 +02:00
|
|
|
void
|
2006-07-05 23:59:33 +02:00
|
|
|
TimingSimpleCPU::completeDrain()
|
2006-06-30 01:45:24 +02:00
|
|
|
{
|
2006-07-05 23:59:33 +02:00
|
|
|
DPRINTF(Config, "Done draining\n");
|
2006-07-13 02:22:07 +02:00
|
|
|
changeState(SimObject::Drained);
|
2006-07-05 23:59:33 +02:00
|
|
|
drainEvent->process();
|
2006-06-30 01:45:24 +02:00
|
|
|
}
|
2006-05-16 23:36:50 +02:00
|
|
|
|
|
|
|
bool
|
2006-05-19 04:32:21 +02:00
|
|
|
TimingSimpleCPU::DcachePort::recvTiming(Packet *pkt)
|
2006-05-16 23:36:50 +02:00
|
|
|
{
|
2006-10-08 19:53:24 +02:00
|
|
|
// delay processing of returned data until next CPU clock edge
|
2006-07-21 01:00:40 +02:00
|
|
|
Tick time = pkt->req->getTime();
|
|
|
|
while (time < curTick)
|
|
|
|
time += lat;
|
|
|
|
|
|
|
|
if (time == curTick)
|
|
|
|
cpu->completeDataAccess(pkt);
|
|
|
|
else
|
|
|
|
tickEvent.schedule(pkt, time);
|
|
|
|
|
2006-05-16 23:36:50 +02:00
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
2006-07-21 01:00:40 +02:00
|
|
|
void
|
|
|
|
TimingSimpleCPU::DcachePort::DTickEvent::process()
|
|
|
|
{
|
|
|
|
cpu->completeDataAccess(pkt);
|
|
|
|
}
|
|
|
|
|
2006-05-31 00:57:42 +02:00
|
|
|
void
|
2006-05-16 23:36:50 +02:00
|
|
|
TimingSimpleCPU::DcachePort::recvRetry()
|
|
|
|
{
|
|
|
|
// we shouldn't get a retry unless we have a packet that we're
|
|
|
|
// waiting to transmit
|
|
|
|
assert(cpu->dcache_pkt != NULL);
|
|
|
|
assert(cpu->_status == DcacheRetry);
|
|
|
|
Packet *tmp = cpu->dcache_pkt;
|
2006-05-31 00:57:42 +02:00
|
|
|
if (sendTiming(tmp)) {
|
|
|
|
cpu->_status = DcacheWaitResponse;
|
2006-10-08 19:53:24 +02:00
|
|
|
// memory system takes ownership of packet
|
2006-05-31 00:57:42 +02:00
|
|
|
cpu->dcache_pkt = NULL;
|
|
|
|
}
|
2006-05-16 23:36:50 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
////////////////////////////////////////////////////////////////////////
|
|
|
|
//
|
|
|
|
// TimingSimpleCPU Simulation Object
|
|
|
|
//
|
|
|
|
BEGIN_DECLARE_SIM_OBJECT_PARAMS(TimingSimpleCPU)
|
|
|
|
|
|
|
|
Param<Counter> max_insts_any_thread;
|
|
|
|
Param<Counter> max_insts_all_threads;
|
|
|
|
Param<Counter> max_loads_any_thread;
|
|
|
|
Param<Counter> max_loads_all_threads;
|
2006-10-03 00:10:10 +02:00
|
|
|
Param<Tick> progress_interval;
|
2006-05-16 23:36:50 +02:00
|
|
|
SimObjectParam<MemObject *> mem;
|
2006-07-13 02:22:07 +02:00
|
|
|
SimObjectParam<System *> system;
|
2006-10-08 19:53:24 +02:00
|
|
|
Param<int> cpu_id;
|
2006-05-16 23:36:50 +02:00
|
|
|
|
|
|
|
#if FULL_SYSTEM
|
|
|
|
SimObjectParam<AlphaITB *> itb;
|
|
|
|
SimObjectParam<AlphaDTB *> dtb;
|
|
|
|
Param<Tick> profile;
|
|
|
|
#else
|
|
|
|
SimObjectParam<Process *> workload;
|
|
|
|
#endif // FULL_SYSTEM
|
|
|
|
|
|
|
|
Param<int> clock;
|
|
|
|
|
|
|
|
Param<bool> defer_registration;
|
|
|
|
Param<int> width;
|
|
|
|
Param<bool> function_trace;
|
|
|
|
Param<Tick> function_trace_start;
|
|
|
|
Param<bool> simulate_stalls;
|
|
|
|
|
|
|
|
END_DECLARE_SIM_OBJECT_PARAMS(TimingSimpleCPU)
|
|
|
|
|
|
|
|
BEGIN_INIT_SIM_OBJECT_PARAMS(TimingSimpleCPU)
|
|
|
|
|
|
|
|
INIT_PARAM(max_insts_any_thread,
|
|
|
|
"terminate when any thread reaches this inst count"),
|
|
|
|
INIT_PARAM(max_insts_all_threads,
|
|
|
|
"terminate when all threads have reached this inst count"),
|
|
|
|
INIT_PARAM(max_loads_any_thread,
|
|
|
|
"terminate when any thread reaches this load count"),
|
|
|
|
INIT_PARAM(max_loads_all_threads,
|
|
|
|
"terminate when all threads have reached this load count"),
|
2006-10-03 00:10:10 +02:00
|
|
|
INIT_PARAM(progress_interval, "Progress interval"),
|
2006-05-16 23:36:50 +02:00
|
|
|
INIT_PARAM(mem, "memory"),
|
2006-07-13 02:22:07 +02:00
|
|
|
INIT_PARAM(system, "system object"),
|
2006-10-08 19:53:24 +02:00
|
|
|
INIT_PARAM(cpu_id, "processor ID"),
|
2006-05-16 23:36:50 +02:00
|
|
|
|
|
|
|
#if FULL_SYSTEM
|
|
|
|
INIT_PARAM(itb, "Instruction TLB"),
|
|
|
|
INIT_PARAM(dtb, "Data TLB"),
|
|
|
|
INIT_PARAM(profile, ""),
|
|
|
|
#else
|
|
|
|
INIT_PARAM(workload, "processes to run"),
|
|
|
|
#endif // FULL_SYSTEM
|
|
|
|
|
|
|
|
INIT_PARAM(clock, "clock speed"),
|
|
|
|
INIT_PARAM(defer_registration, "defer system registration (for sampling)"),
|
|
|
|
INIT_PARAM(width, "cpu width"),
|
|
|
|
INIT_PARAM(function_trace, "Enable function trace"),
|
|
|
|
INIT_PARAM(function_trace_start, "Cycle to start function trace"),
|
|
|
|
INIT_PARAM(simulate_stalls, "Simulate cache stall cycles")
|
|
|
|
|
|
|
|
END_INIT_SIM_OBJECT_PARAMS(TimingSimpleCPU)
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CREATE_SIM_OBJECT(TimingSimpleCPU)
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{
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TimingSimpleCPU::Params *params = new TimingSimpleCPU::Params();
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params->name = getInstanceName();
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params->numberOfThreads = 1;
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params->max_insts_any_thread = max_insts_any_thread;
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params->max_insts_all_threads = max_insts_all_threads;
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params->max_loads_any_thread = max_loads_any_thread;
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params->max_loads_all_threads = max_loads_all_threads;
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2006-10-03 00:10:10 +02:00
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params->progress_interval = progress_interval;
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2006-05-16 23:36:50 +02:00
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params->deferRegistration = defer_registration;
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params->clock = clock;
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params->functionTrace = function_trace;
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params->functionTraceStart = function_trace_start;
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params->mem = mem;
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2006-07-13 02:22:07 +02:00
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params->system = system;
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2006-10-08 19:53:24 +02:00
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params->cpu_id = cpu_id;
|
2006-05-16 23:36:50 +02:00
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#if FULL_SYSTEM
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params->itb = itb;
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params->dtb = dtb;
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params->profile = profile;
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#else
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params->process = workload;
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#endif
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TimingSimpleCPU *cpu = new TimingSimpleCPU(params);
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return cpu;
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}
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REGISTER_SIM_OBJECT("TimingSimpleCPU", TimingSimpleCPU)
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