func_unit.cc revision 10936:93890720a932
12SN/A/* 21762SN/A * Copyright (c) 2002-2006 The Regents of The University of Michigan 32SN/A * All rights reserved. 42SN/A * 52SN/A * Redistribution and use in source and binary forms, with or without 62SN/A * modification, are permitted provided that the following conditions are 72SN/A * met: redistributions of source code must retain the above copyright 82SN/A * notice, this list of conditions and the following disclaimer; 92SN/A * redistributions in binary form must reproduce the above copyright 102SN/A * notice, this list of conditions and the following disclaimer in the 112SN/A * documentation and/or other materials provided with the distribution; 122SN/A * neither the name of the copyright holders nor the names of its 132SN/A * contributors may be used to endorse or promote products derived from 142SN/A * this software without specific prior written permission. 152SN/A * 162SN/A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 172SN/A * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 182SN/A * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 192SN/A * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 202SN/A * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 212SN/A * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 222SN/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 232SN/A * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 242SN/A * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 252SN/A * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 262SN/A * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 272665Ssaidi@eecs.umich.edu * 282665Ssaidi@eecs.umich.edu * Authors: Steve Raasch 292665Ssaidi@eecs.umich.edu */ 302SN/A 312SN/A#include <sstream> 324183Sgblack@eecs.umich.edu 332439SN/A#include "base/misc.hh" 348229Snate@binkert.org#include "cpu/func_unit.hh" 352680Sktlim@umich.edu 368232Snate@binkert.orgusing namespace std; 378229Snate@binkert.org 384183Sgblack@eecs.umich.edu 398784Sgblack@eecs.umich.edu//////////////////////////////////////////////////////////////////////////// 404183Sgblack@eecs.umich.edu// 412SN/A// The funciton unit 4210417Sandreas.hansson@arm.com// 432201SN/AFuncUnit::FuncUnit() 448784Sgblack@eecs.umich.edu{ 458589Sgblack@eecs.umich.edu opLatencies.fill(0); 468589Sgblack@eecs.umich.edu pipelined.fill(false); 478589Sgblack@eecs.umich.edu capabilityList.reset(); 488589Sgblack@eecs.umich.edu} 492201SN/A 502612SN/A 5110417Sandreas.hansson@arm.com// Copy constructor 522612SN/AFuncUnit::FuncUnit(const FuncUnit &fu) 536815SLisa.Hsu@amd.com{ 542612SN/A 555004Sgblack@eecs.umich.edu for (int i = 0; i < Num_OpClasses; ++i) { 5610417Sandreas.hansson@arm.com opLatencies[i] = fu.opLatencies[i]; 578545Ssaidi@eecs.umich.edu pipelined[i] = fu.pipelined[i]; 588545Ssaidi@eecs.umich.edu } 598545Ssaidi@eecs.umich.edu 608545Ssaidi@eecs.umich.edu capabilityList = fu.capabilityList; 6110417Sandreas.hansson@arm.com} 624183Sgblack@eecs.umich.edu 638589Sgblack@eecs.umich.edu 648784Sgblack@eecs.umich.eduvoid 658784Sgblack@eecs.umich.eduFuncUnit::addCapability(OpClass cap, unsigned oplat, bool pipeline) 668784Sgblack@eecs.umich.edu{ 678784Sgblack@eecs.umich.edu if (oplat == 0) 688589Sgblack@eecs.umich.edu panic("FuncUnit: you don't really want a zero-cycle latency do you?"); 694183Sgblack@eecs.umich.edu 704434Ssaidi@eecs.umich.edu capabilityList.set(cap); 714183Sgblack@eecs.umich.edu 725004Sgblack@eecs.umich.edu opLatencies[cap] = oplat; 7310417Sandreas.hansson@arm.com pipelined[cap] = pipeline; 745004Sgblack@eecs.umich.edu} 755004Sgblack@eecs.umich.edu 765004Sgblack@eecs.umich.edubool 77FuncUnit::provides(OpClass capability) 78{ 79 return capabilityList[capability]; 80} 81 82bitset<Num_OpClasses> 83FuncUnit::capabilities() 84{ 85 return capabilityList; 86} 87 88unsigned & 89FuncUnit::opLatency(OpClass cap) 90{ 91 return opLatencies[cap]; 92} 93 94bool 95FuncUnit::isPipelined(OpClass capability) 96{ 97 return pipelined[capability]; 98} 99 100//////////////////////////////////////////////////////////////////////////// 101// 102// The SimObjects we use to get the FU information into the simulator 103// 104//////////////////////////////////////////////////////////////////////////// 105 106// 107// We use 2 objects to specify this data in the INI file: 108// (1) OpDesc - Describes the operation class & latencies 109// (multiple OpDesc objects can refer to the same 110// operation classes) 111// (2) FUDesc - Describes the operations available in the unit & 112// the number of these units 113// 114// 115 116 117// 118// The operation-class description object 119// 120OpDesc * 121OpDescParams::create() 122{ 123 return new OpDesc(this); 124} 125 126// 127// The FuDesc object 128// 129FUDesc * 130FUDescParams::create() 131{ 132 return new FUDesc(this); 133} 134