0bbd909f02
src/SConscript:
Split off FuncUnits from old FUPool so I'm not including encumbered code. This was all written by Steve Raasch so it's safe to include in the main tree.
src/cpu/o3/fu_pool.cc:
Include the func unit file that's not in the encumbered directory.
--HG--
extra : convert_revision : 9801c606961dd2d62dba190d13a76069992bf241
171 lines
4.4 KiB
C++
171 lines
4.4 KiB
C++
/*
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* Copyright (c) 2002-2006 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: Steve Raasch
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*/
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#include <sstream>
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#include "base/misc.hh"
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#include "cpu/func_unit.hh"
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#include "sim/builder.hh"
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using namespace std;
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////////////////////////////////////////////////////////////////////////////
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//
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// The funciton unit
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//
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FuncUnit::FuncUnit()
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{
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capabilityList.reset();
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}
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// Copy constructor
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FuncUnit::FuncUnit(const FuncUnit &fu)
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{
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for (int i = 0; i < Num_OpClasses; ++i) {
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opLatencies[i] = fu.opLatencies[i];
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issueLatencies[i] = fu.issueLatencies[i];
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}
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capabilityList = fu.capabilityList;
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}
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void
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FuncUnit::addCapability(OpClass cap, unsigned oplat, unsigned issuelat)
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{
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if (issuelat == 0 || oplat == 0)
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panic("FuncUnit: you don't really want a zero-cycle latency do you?");
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capabilityList.set(cap);
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opLatencies[cap] = oplat;
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issueLatencies[cap] = issuelat;
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}
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bool
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FuncUnit::provides(OpClass capability)
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{
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return capabilityList[capability];
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}
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bitset<Num_OpClasses>
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FuncUnit::capabilities()
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{
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return capabilityList;
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}
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unsigned &
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FuncUnit::opLatency(OpClass cap)
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{
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return opLatencies[cap];
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}
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unsigned
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FuncUnit::issueLatency(OpClass capability)
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{
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return issueLatencies[capability];
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}
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////////////////////////////////////////////////////////////////////////////
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//
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// The SimObjects we use to get the FU information into the simulator
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//
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////////////////////////////////////////////////////////////////////////////
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//
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// We use 2 objects to specify this data in the INI file:
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// (1) OpDesc - Describes the operation class & latencies
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// (multiple OpDesc objects can refer to the same
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// operation classes)
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// (2) FUDesc - Describes the operations available in the unit &
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// the number of these units
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//
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//
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//
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// The operation-class description object
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//
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BEGIN_DECLARE_SIM_OBJECT_PARAMS(OpDesc)
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SimpleEnumParam<OpClass> opClass;
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Param<unsigned> opLat;
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Param<unsigned> issueLat;
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END_DECLARE_SIM_OBJECT_PARAMS(OpDesc)
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BEGIN_INIT_SIM_OBJECT_PARAMS(OpDesc)
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INIT_ENUM_PARAM(opClass, "type of operation", opClassStrings),
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INIT_PARAM(opLat, "cycles until result is available"),
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INIT_PARAM(issueLat, "cycles until another can be issued")
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END_INIT_SIM_OBJECT_PARAMS(OpDesc)
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CREATE_SIM_OBJECT(OpDesc)
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{
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return new OpDesc(getInstanceName(), opClass, opLat, issueLat);
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}
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REGISTER_SIM_OBJECT("OpDesc", OpDesc)
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//
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// The FuDesc object
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//
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BEGIN_DECLARE_SIM_OBJECT_PARAMS(FUDesc)
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SimObjectVectorParam<OpDesc *> opList;
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Param<unsigned> count;
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END_DECLARE_SIM_OBJECT_PARAMS(FUDesc)
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BEGIN_INIT_SIM_OBJECT_PARAMS(FUDesc)
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INIT_PARAM(opList, "list of operation classes for this FU type"),
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INIT_PARAM(count, "number of these FU's available")
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END_INIT_SIM_OBJECT_PARAMS(FUDesc)
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CREATE_SIM_OBJECT(FUDesc)
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{
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return new FUDesc(getInstanceName(), opList, count);
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}
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REGISTER_SIM_OBJECT("FUDesc", FUDesc)
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