func_unit.cc revision 2736
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 222736Sktlim@umich.edu * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 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#include "sim/builder.hh" 362736Sktlim@umich.edu 372736Sktlim@umich.eduusing namespace std; 382736Sktlim@umich.edu 392736Sktlim@umich.edu 402736Sktlim@umich.edu//////////////////////////////////////////////////////////////////////////// 412736Sktlim@umich.edu// 422736Sktlim@umich.edu// The funciton unit 432736Sktlim@umich.edu// 442736Sktlim@umich.eduFuncUnit::FuncUnit() 452736Sktlim@umich.edu{ 462736Sktlim@umich.edu capabilityList.reset(); 472736Sktlim@umich.edu} 482736Sktlim@umich.edu 492736Sktlim@umich.edu 502736Sktlim@umich.edu// Copy constructor 512736Sktlim@umich.eduFuncUnit::FuncUnit(const FuncUnit &fu) 522736Sktlim@umich.edu{ 532736Sktlim@umich.edu 542736Sktlim@umich.edu for (int i = 0; i < Num_OpClasses; ++i) { 552736Sktlim@umich.edu opLatencies[i] = fu.opLatencies[i]; 562736Sktlim@umich.edu issueLatencies[i] = fu.issueLatencies[i]; 572736Sktlim@umich.edu } 582736Sktlim@umich.edu 592736Sktlim@umich.edu capabilityList = fu.capabilityList; 602736Sktlim@umich.edu} 612736Sktlim@umich.edu 622736Sktlim@umich.edu 632736Sktlim@umich.eduvoid 642736Sktlim@umich.eduFuncUnit::addCapability(OpClass cap, unsigned oplat, unsigned issuelat) 652736Sktlim@umich.edu{ 662736Sktlim@umich.edu if (issuelat == 0 || oplat == 0) 672736Sktlim@umich.edu panic("FuncUnit: you don't really want a zero-cycle latency do you?"); 682736Sktlim@umich.edu 692736Sktlim@umich.edu capabilityList.set(cap); 702736Sktlim@umich.edu 712736Sktlim@umich.edu opLatencies[cap] = oplat; 722736Sktlim@umich.edu issueLatencies[cap] = issuelat; 732736Sktlim@umich.edu} 742736Sktlim@umich.edu 752736Sktlim@umich.edubool 762736Sktlim@umich.eduFuncUnit::provides(OpClass capability) 772736Sktlim@umich.edu{ 782736Sktlim@umich.edu return capabilityList[capability]; 792736Sktlim@umich.edu} 802736Sktlim@umich.edu 812736Sktlim@umich.edubitset<Num_OpClasses> 822736Sktlim@umich.eduFuncUnit::capabilities() 832736Sktlim@umich.edu{ 842736Sktlim@umich.edu return capabilityList; 852736Sktlim@umich.edu} 862736Sktlim@umich.edu 872736Sktlim@umich.eduunsigned & 882736Sktlim@umich.eduFuncUnit::opLatency(OpClass cap) 892736Sktlim@umich.edu{ 902736Sktlim@umich.edu return opLatencies[cap]; 912736Sktlim@umich.edu} 922736Sktlim@umich.edu 932736Sktlim@umich.eduunsigned 942736Sktlim@umich.eduFuncUnit::issueLatency(OpClass capability) 952736Sktlim@umich.edu{ 962736Sktlim@umich.edu return issueLatencies[capability]; 972736Sktlim@umich.edu} 982736Sktlim@umich.edu 992736Sktlim@umich.edu//////////////////////////////////////////////////////////////////////////// 1002736Sktlim@umich.edu// 1012736Sktlim@umich.edu// The SimObjects we use to get the FU information into the simulator 1022736Sktlim@umich.edu// 1032736Sktlim@umich.edu//////////////////////////////////////////////////////////////////////////// 1042736Sktlim@umich.edu 1052736Sktlim@umich.edu// 1062736Sktlim@umich.edu// We use 2 objects to specify this data in the INI file: 1072736Sktlim@umich.edu// (1) OpDesc - Describes the operation class & latencies 1082736Sktlim@umich.edu// (multiple OpDesc objects can refer to the same 1092736Sktlim@umich.edu// operation classes) 1102736Sktlim@umich.edu// (2) FUDesc - Describes the operations available in the unit & 1112736Sktlim@umich.edu// the number of these units 1122736Sktlim@umich.edu// 1132736Sktlim@umich.edu// 1142736Sktlim@umich.edu 1152736Sktlim@umich.edu 1162736Sktlim@umich.edu// 1172736Sktlim@umich.edu// The operation-class description object 1182736Sktlim@umich.edu// 1192736Sktlim@umich.edu 1202736Sktlim@umich.eduBEGIN_DECLARE_SIM_OBJECT_PARAMS(OpDesc) 1212736Sktlim@umich.edu 1222736Sktlim@umich.edu SimpleEnumParam<OpClass> opClass; 1232736Sktlim@umich.edu Param<unsigned> opLat; 1242736Sktlim@umich.edu Param<unsigned> issueLat; 1252736Sktlim@umich.edu 1262736Sktlim@umich.eduEND_DECLARE_SIM_OBJECT_PARAMS(OpDesc) 1272736Sktlim@umich.edu 1282736Sktlim@umich.eduBEGIN_INIT_SIM_OBJECT_PARAMS(OpDesc) 1292736Sktlim@umich.edu 1302736Sktlim@umich.edu INIT_ENUM_PARAM(opClass, "type of operation", opClassStrings), 1312736Sktlim@umich.edu INIT_PARAM(opLat, "cycles until result is available"), 1322736Sktlim@umich.edu INIT_PARAM(issueLat, "cycles until another can be issued") 1332736Sktlim@umich.edu 1342736Sktlim@umich.eduEND_INIT_SIM_OBJECT_PARAMS(OpDesc) 1352736Sktlim@umich.edu 1362736Sktlim@umich.edu 1372736Sktlim@umich.eduCREATE_SIM_OBJECT(OpDesc) 1382736Sktlim@umich.edu{ 1392736Sktlim@umich.edu return new OpDesc(getInstanceName(), opClass, opLat, issueLat); 1402736Sktlim@umich.edu} 1412736Sktlim@umich.edu 1422736Sktlim@umich.eduREGISTER_SIM_OBJECT("OpDesc", OpDesc) 1432736Sktlim@umich.edu 1442736Sktlim@umich.edu 1452736Sktlim@umich.edu// 1462736Sktlim@umich.edu// The FuDesc object 1472736Sktlim@umich.edu// 1482736Sktlim@umich.edu 1492736Sktlim@umich.eduBEGIN_DECLARE_SIM_OBJECT_PARAMS(FUDesc) 1502736Sktlim@umich.edu 1512736Sktlim@umich.edu SimObjectVectorParam<OpDesc *> opList; 1522736Sktlim@umich.edu Param<unsigned> count; 1532736Sktlim@umich.edu 1542736Sktlim@umich.eduEND_DECLARE_SIM_OBJECT_PARAMS(FUDesc) 1552736Sktlim@umich.edu 1562736Sktlim@umich.edu 1572736Sktlim@umich.eduBEGIN_INIT_SIM_OBJECT_PARAMS(FUDesc) 1582736Sktlim@umich.edu 1592736Sktlim@umich.edu INIT_PARAM(opList, "list of operation classes for this FU type"), 1602736Sktlim@umich.edu INIT_PARAM(count, "number of these FU's available") 1612736Sktlim@umich.edu 1622736Sktlim@umich.eduEND_INIT_SIM_OBJECT_PARAMS(FUDesc) 1632736Sktlim@umich.edu 1642736Sktlim@umich.edu 1652736Sktlim@umich.eduCREATE_SIM_OBJECT(FUDesc) 1662736Sktlim@umich.edu{ 1672736Sktlim@umich.edu return new FUDesc(getInstanceName(), opList, count); 1682736Sktlim@umich.edu} 1692736Sktlim@umich.edu 1702736Sktlim@umich.eduREGISTER_SIM_OBJECT("FUDesc", FUDesc) 1712736Sktlim@umich.edu 172