295 lines
7.2 KiB
C++
295 lines
7.2 KiB
C++
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/*
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* Copyright (c) 2013-2014 ARM Limited
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* All rights reserved
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*
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* The license below extends only to copyright in the software and shall
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* not be construed as granting a license to any other intellectual
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* property including but not limited to intellectual property relating
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* to a hardware implementation of the functionality of the software
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* licensed hereunder. You may use the software subject to the license
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* terms below provided that you ensure that this notice is replicated
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* unmodified and in its entirety in all distributions of the software,
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* modified or unmodified, in source code or in binary form.
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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: Andrew Bardsley
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*/
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#include "cpu/minor/pipe_data.hh"
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namespace Minor
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{
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std::ostream &
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operator <<(std::ostream &os, BranchData::Reason reason)
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{
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switch (reason)
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{
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case BranchData::NoBranch:
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os << "NoBranch";
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break;
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case BranchData::UnpredictedBranch:
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os << "UnpredictedBranch";
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break;
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case BranchData::BranchPrediction:
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os << "BranchPrediction";
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break;
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case BranchData::CorrectlyPredictedBranch:
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os << "CorrectlyPredictedBranch";
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break;
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case BranchData::BadlyPredictedBranch:
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os << "BadlyPredictedBranch";
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break;
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case BranchData::BadlyPredictedBranchTarget:
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os << "BadlyPredictedBranchTarget";
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break;
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case BranchData::Interrupt:
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os << "Interrupt";
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break;
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case BranchData::SuspendThread:
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os << "SuspendThread";
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break;
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case BranchData::WakeupFetch:
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os << "WakeupFetch";
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break;
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case BranchData::HaltFetch:
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os << "HaltFetch";
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break;
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}
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return os;
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}
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bool
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BranchData::isStreamChange(const BranchData::Reason reason)
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{
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bool ret = false;
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switch (reason)
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{
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/* No change of stream (see the enum comment in pipe_data.hh) */
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case NoBranch:
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case CorrectlyPredictedBranch:
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ret = false;
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break;
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/* Change of stream (Fetch1 should act on) */
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case UnpredictedBranch:
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case BranchPrediction:
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case BadlyPredictedBranchTarget:
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case BadlyPredictedBranch:
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case SuspendThread:
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case Interrupt:
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case WakeupFetch:
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case HaltFetch:
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ret = true;
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break;
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}
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return ret;
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}
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bool
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BranchData::isBranch(const BranchData::Reason reason)
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{
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bool ret = false;
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switch (reason)
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{
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/* No change of stream (see the enum comment in pipe_data.hh) */
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case NoBranch:
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case CorrectlyPredictedBranch:
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case SuspendThread:
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case Interrupt:
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case WakeupFetch:
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case HaltFetch:
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ret = false;
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break;
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/* Change of stream (Fetch1 should act on) */
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case UnpredictedBranch:
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case BranchPrediction:
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case BadlyPredictedBranchTarget:
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case BadlyPredictedBranch:
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ret = true;
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break;
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}
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return ret;
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}
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void
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BranchData::reportData(std::ostream &os) const
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{
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if (isBubble()) {
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os << '-';
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} else {
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os << reason
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<< ';' << newStreamSeqNum << '.' << newPredictionSeqNum
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<< ";0x" << std::hex << target.instAddr() << std::dec
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<< ';';
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inst->reportData(os);
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}
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}
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std::ostream &
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operator <<(std::ostream &os, const BranchData &branch)
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{
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os << branch.reason << " target: 0x"
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<< std::hex << branch.target.instAddr() << std::dec
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<< ' ' << *branch.inst
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<< ' ' << branch.newStreamSeqNum << "(stream)."
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<< branch.newPredictionSeqNum << "(pred)";
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return os;
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}
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void
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ForwardLineData::setFault(Fault fault_)
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{
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fault = fault_;
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if (isFault())
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bubbleFlag = false;
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}
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void
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ForwardLineData::allocateLine(unsigned int width_)
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{
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lineWidth = width_;
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bubbleFlag = false;
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assert(!isFault());
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assert(!line);
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line = new uint8_t[width_];
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}
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void
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ForwardLineData::adoptPacketData(Packet *packet)
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{
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this->packet = packet;
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lineWidth = packet->req->getSize();
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bubbleFlag = false;
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assert(!isFault());
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assert(!line);
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line = packet->getPtr<uint8_t>();
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}
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void
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ForwardLineData::freeLine()
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{
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/* Only free lines in non-faulting, non-bubble lines */
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if (!isFault() && !isBubble()) {
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assert(line);
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/* If packet is not NULL then the line must belong to the packet so
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* we don't need to separately deallocate the line */
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if (packet) {
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delete packet;
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} else {
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delete [] line;
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}
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line = NULL;
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bubbleFlag = true;
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}
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}
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void
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ForwardLineData::reportData(std::ostream &os) const
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{
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if (isBubble())
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os << '-';
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else if (fault != NoFault)
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os << "F;" << id;
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else
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os << id;
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}
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ForwardInstData::ForwardInstData(unsigned int width) :
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numInsts(width)
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{
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bubbleFill();
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}
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ForwardInstData::ForwardInstData(const ForwardInstData &src)
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{
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*this = src;
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}
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ForwardInstData &
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ForwardInstData::operator =(const ForwardInstData &src)
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{
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numInsts = src.numInsts;
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for (unsigned int i = 0; i < src.numInsts; i++)
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insts[i] = src.insts[i];
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return *this;
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}
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bool
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ForwardInstData::isBubble() const
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{
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return numInsts == 0 || insts[0]->isBubble();
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}
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void
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ForwardInstData::bubbleFill()
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{
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for (unsigned int i = 0; i < numInsts; i++)
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insts[i] = MinorDynInst::bubble();
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}
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void
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ForwardInstData::resize(unsigned int width)
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{
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assert(width < MAX_FORWARD_INSTS);
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numInsts = width;
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bubbleFill();
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}
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void
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ForwardInstData::reportData(std::ostream &os) const
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{
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if (isBubble()) {
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os << '-';
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} else {
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unsigned int i = 0;
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os << '(';
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while (i != numInsts) {
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insts[i]->reportData(os);
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i++;
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if (i != numInsts)
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os << ',';
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}
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os << ')';
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}
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}
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}
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