func_unit.cc revision 5034
12736Sktlim@umich.edu/*
22736Sktlim@umich.edu * Copyright (c) 2002-2006 The Regents of The University of Michigan
32736Sktlim@umich.edu * All rights reserved.
42736Sktlim@umich.edu *
52736Sktlim@umich.edu * Redistribution and use in source and binary forms, with or without
62736Sktlim@umich.edu * modification, are permitted provided that the following conditions are
72736Sktlim@umich.edu * met: redistributions of source code must retain the above copyright
82736Sktlim@umich.edu * notice, this list of conditions and the following disclaimer;
92736Sktlim@umich.edu * redistributions in binary form must reproduce the above copyright
102736Sktlim@umich.edu * notice, this list of conditions and the following disclaimer in the
112736Sktlim@umich.edu * documentation and/or other materials provided with the distribution;
122736Sktlim@umich.edu * neither the name of the copyright holders nor the names of its
132736Sktlim@umich.edu * contributors may be used to endorse or promote products derived from
142736Sktlim@umich.edu * this software without specific prior written permission.
152736Sktlim@umich.edu *
162736Sktlim@umich.edu * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
172736Sktlim@umich.edu * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
182736Sktlim@umich.edu * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
192736Sktlim@umich.edu * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
202736Sktlim@umich.edu * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
212736Sktlim@umich.edu * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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232736Sktlim@umich.edu * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
242736Sktlim@umich.edu * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
252736Sktlim@umich.edu * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
262736Sktlim@umich.edu * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
272736Sktlim@umich.edu *
282736Sktlim@umich.edu * Authors: Steve Raasch
292736Sktlim@umich.edu */
302736Sktlim@umich.edu
312736Sktlim@umich.edu#include <sstream>
322736Sktlim@umich.edu
332736Sktlim@umich.edu#include "base/misc.hh"
342736Sktlim@umich.edu#include "cpu/func_unit.hh"
352736Sktlim@umich.edu
362736Sktlim@umich.eduusing namespace std;
372736Sktlim@umich.edu
382736Sktlim@umich.edu
392736Sktlim@umich.edu////////////////////////////////////////////////////////////////////////////
402736Sktlim@umich.edu//
412736Sktlim@umich.edu//  The funciton unit
422736Sktlim@umich.edu//
432736Sktlim@umich.eduFuncUnit::FuncUnit()
442736Sktlim@umich.edu{
452736Sktlim@umich.edu    capabilityList.reset();
462736Sktlim@umich.edu}
472736Sktlim@umich.edu
482736Sktlim@umich.edu
492736Sktlim@umich.edu//  Copy constructor
502736Sktlim@umich.eduFuncUnit::FuncUnit(const FuncUnit &fu)
512736Sktlim@umich.edu{
522736Sktlim@umich.edu
532736Sktlim@umich.edu    for (int i = 0; i < Num_OpClasses; ++i) {
542736Sktlim@umich.edu        opLatencies[i] = fu.opLatencies[i];
552736Sktlim@umich.edu        issueLatencies[i] = fu.issueLatencies[i];
562736Sktlim@umich.edu    }
572736Sktlim@umich.edu
582736Sktlim@umich.edu    capabilityList = fu.capabilityList;
592736Sktlim@umich.edu}
602736Sktlim@umich.edu
612736Sktlim@umich.edu
622736Sktlim@umich.eduvoid
632736Sktlim@umich.eduFuncUnit::addCapability(OpClass cap, unsigned oplat, unsigned issuelat)
642736Sktlim@umich.edu{
652736Sktlim@umich.edu    if (issuelat == 0 || oplat == 0)
662736Sktlim@umich.edu        panic("FuncUnit:  you don't really want a zero-cycle latency do you?");
672736Sktlim@umich.edu
682736Sktlim@umich.edu    capabilityList.set(cap);
692736Sktlim@umich.edu
702736Sktlim@umich.edu    opLatencies[cap] = oplat;
712736Sktlim@umich.edu    issueLatencies[cap] = issuelat;
722736Sktlim@umich.edu}
732736Sktlim@umich.edu
742736Sktlim@umich.edubool
752736Sktlim@umich.eduFuncUnit::provides(OpClass capability)
762736Sktlim@umich.edu{
772736Sktlim@umich.edu    return capabilityList[capability];
782736Sktlim@umich.edu}
792736Sktlim@umich.edu
802736Sktlim@umich.edubitset<Num_OpClasses>
812736Sktlim@umich.eduFuncUnit::capabilities()
822736Sktlim@umich.edu{
832736Sktlim@umich.edu    return capabilityList;
842736Sktlim@umich.edu}
852736Sktlim@umich.edu
862736Sktlim@umich.eduunsigned &
872736Sktlim@umich.eduFuncUnit::opLatency(OpClass cap)
882736Sktlim@umich.edu{
892736Sktlim@umich.edu    return opLatencies[cap];
902736Sktlim@umich.edu}
912736Sktlim@umich.edu
922736Sktlim@umich.eduunsigned
932736Sktlim@umich.eduFuncUnit::issueLatency(OpClass capability)
942736Sktlim@umich.edu{
952736Sktlim@umich.edu    return issueLatencies[capability];
962736Sktlim@umich.edu}
972736Sktlim@umich.edu
982736Sktlim@umich.edu////////////////////////////////////////////////////////////////////////////
992736Sktlim@umich.edu//
1002736Sktlim@umich.edu//  The SimObjects we use to get the FU information into the simulator
1012736Sktlim@umich.edu//
1022736Sktlim@umich.edu////////////////////////////////////////////////////////////////////////////
1032736Sktlim@umich.edu
1042736Sktlim@umich.edu//
1052736Sktlim@umich.edu//  We use 2 objects to specify this data in the INI file:
1062736Sktlim@umich.edu//    (1) OpDesc - Describes the operation class & latencies
1072736Sktlim@umich.edu//                   (multiple OpDesc objects can refer to the same
1082736Sktlim@umich.edu//                   operation classes)
1092736Sktlim@umich.edu//    (2) FUDesc - Describes the operations available in the unit &
1102736Sktlim@umich.edu//                   the number of these units
1112736Sktlim@umich.edu//
1122736Sktlim@umich.edu//
1132736Sktlim@umich.edu
1142736Sktlim@umich.edu
1152736Sktlim@umich.edu//
1162736Sktlim@umich.edu//  The operation-class description object
1172736Sktlim@umich.edu//
1184762Snate@binkert.orgOpDesc *
1194762Snate@binkert.orgOpDescParams::create()
1202736Sktlim@umich.edu{
1215034Smilesck@eecs.umich.edu    return new OpDesc(this);
1222736Sktlim@umich.edu}
1232736Sktlim@umich.edu
1242736Sktlim@umich.edu//
1252736Sktlim@umich.edu//  The FuDesc object
1262736Sktlim@umich.edu//
1274762Snate@binkert.orgFUDesc *
1284762Snate@binkert.orgFUDescParams::create()
1292736Sktlim@umich.edu{
1305034Smilesck@eecs.umich.edu    return new FUDesc(this);
1312736Sktlim@umich.edu}
132