func_unit.cc revision 4762
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" 354762Snate@binkert.org#include "params/OpDesc.hh" 364762Snate@binkert.org#include "params/FUDesc.hh" 372736Sktlim@umich.edu 382736Sktlim@umich.eduusing namespace std; 392736Sktlim@umich.edu 402736Sktlim@umich.edu 412736Sktlim@umich.edu//////////////////////////////////////////////////////////////////////////// 422736Sktlim@umich.edu// 432736Sktlim@umich.edu// The funciton unit 442736Sktlim@umich.edu// 452736Sktlim@umich.eduFuncUnit::FuncUnit() 462736Sktlim@umich.edu{ 472736Sktlim@umich.edu capabilityList.reset(); 482736Sktlim@umich.edu} 492736Sktlim@umich.edu 502736Sktlim@umich.edu 512736Sktlim@umich.edu// Copy constructor 522736Sktlim@umich.eduFuncUnit::FuncUnit(const FuncUnit &fu) 532736Sktlim@umich.edu{ 542736Sktlim@umich.edu 552736Sktlim@umich.edu for (int i = 0; i < Num_OpClasses; ++i) { 562736Sktlim@umich.edu opLatencies[i] = fu.opLatencies[i]; 572736Sktlim@umich.edu issueLatencies[i] = fu.issueLatencies[i]; 582736Sktlim@umich.edu } 592736Sktlim@umich.edu 602736Sktlim@umich.edu capabilityList = fu.capabilityList; 612736Sktlim@umich.edu} 622736Sktlim@umich.edu 632736Sktlim@umich.edu 642736Sktlim@umich.eduvoid 652736Sktlim@umich.eduFuncUnit::addCapability(OpClass cap, unsigned oplat, unsigned issuelat) 662736Sktlim@umich.edu{ 672736Sktlim@umich.edu if (issuelat == 0 || oplat == 0) 682736Sktlim@umich.edu panic("FuncUnit: you don't really want a zero-cycle latency do you?"); 692736Sktlim@umich.edu 702736Sktlim@umich.edu capabilityList.set(cap); 712736Sktlim@umich.edu 722736Sktlim@umich.edu opLatencies[cap] = oplat; 732736Sktlim@umich.edu issueLatencies[cap] = issuelat; 742736Sktlim@umich.edu} 752736Sktlim@umich.edu 762736Sktlim@umich.edubool 772736Sktlim@umich.eduFuncUnit::provides(OpClass capability) 782736Sktlim@umich.edu{ 792736Sktlim@umich.edu return capabilityList[capability]; 802736Sktlim@umich.edu} 812736Sktlim@umich.edu 822736Sktlim@umich.edubitset<Num_OpClasses> 832736Sktlim@umich.eduFuncUnit::capabilities() 842736Sktlim@umich.edu{ 852736Sktlim@umich.edu return capabilityList; 862736Sktlim@umich.edu} 872736Sktlim@umich.edu 882736Sktlim@umich.eduunsigned & 892736Sktlim@umich.eduFuncUnit::opLatency(OpClass cap) 902736Sktlim@umich.edu{ 912736Sktlim@umich.edu return opLatencies[cap]; 922736Sktlim@umich.edu} 932736Sktlim@umich.edu 942736Sktlim@umich.eduunsigned 952736Sktlim@umich.eduFuncUnit::issueLatency(OpClass capability) 962736Sktlim@umich.edu{ 972736Sktlim@umich.edu return issueLatencies[capability]; 982736Sktlim@umich.edu} 992736Sktlim@umich.edu 1002736Sktlim@umich.edu//////////////////////////////////////////////////////////////////////////// 1012736Sktlim@umich.edu// 1022736Sktlim@umich.edu// The SimObjects we use to get the FU information into the simulator 1032736Sktlim@umich.edu// 1042736Sktlim@umich.edu//////////////////////////////////////////////////////////////////////////// 1052736Sktlim@umich.edu 1062736Sktlim@umich.edu// 1072736Sktlim@umich.edu// We use 2 objects to specify this data in the INI file: 1082736Sktlim@umich.edu// (1) OpDesc - Describes the operation class & latencies 1092736Sktlim@umich.edu// (multiple OpDesc objects can refer to the same 1102736Sktlim@umich.edu// operation classes) 1112736Sktlim@umich.edu// (2) FUDesc - Describes the operations available in the unit & 1122736Sktlim@umich.edu// the number of these units 1132736Sktlim@umich.edu// 1142736Sktlim@umich.edu// 1152736Sktlim@umich.edu 1162736Sktlim@umich.edu 1172736Sktlim@umich.edu// 1182736Sktlim@umich.edu// The operation-class description object 1192736Sktlim@umich.edu// 1204762Snate@binkert.orgOpDesc * 1214762Snate@binkert.orgOpDescParams::create() 1222736Sktlim@umich.edu{ 1234762Snate@binkert.org return new OpDesc(name, opClass, opLat, issueLat); 1242736Sktlim@umich.edu} 1252736Sktlim@umich.edu 1262736Sktlim@umich.edu// 1272736Sktlim@umich.edu// The FuDesc object 1282736Sktlim@umich.edu// 1294762Snate@binkert.orgFUDesc * 1304762Snate@binkert.orgFUDescParams::create() 1312736Sktlim@umich.edu{ 1324762Snate@binkert.org return new FUDesc(name, opList, count); 1332736Sktlim@umich.edu} 134