set_associative.cc revision 13219
1/* 2 * Copyright (c) 2018 Inria 3 * Copyright (c) 2012-2014,2017 ARM Limited 4 * All rights reserved. 5 * 6 * The license below extends only to copyright in the software and shall 7 * not be construed as granting a license to any other intellectual 8 * property including but not limited to intellectual property relating 9 * to a hardware implementation of the functionality of the software 10 * licensed hereunder. You may use the software subject to the license 11 * terms below provided that you ensure that this notice is replicated 12 * unmodified and in its entirety in all distributions of the software, 13 * modified or unmodified, in source code or in binary form. 14 * 15 * Copyright (c) 2003-2005,2014 The Regents of The University of Michigan 16 * All rights reserved. 17 * 18 * Redistribution and use in source and binary forms, with or without 19 * modification, are permitted provided that the following conditions are 20 * met: redistributions of source code must retain the above copyright 21 * notice, this list of conditions and the following disclaimer; 22 * redistributions in binary form must reproduce the above copyright 23 * notice, this list of conditions and the following disclaimer in the 24 * documentation and/or other materials provided with the distribution; 25 * neither the name of the copyright holders nor the names of its 26 * contributors may be used to endorse or promote products derived from 27 * this software without specific prior written permission. 28 * 29 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 30 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 31 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 32 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 33 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 34 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 35 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 36 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 37 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 38 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 39 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 40 * 41 * Authors: Daniel Carvalho 42 * Erik Hallnor 43 */ 44 45/** 46 * @file 47 * Definitions of a set associative indexing policy. 48 */ 49 50#include "mem/cache/tags/indexing_policies/set_associative.hh" 51 52#include "mem/cache/replacement_policies/base.hh" 53 54SetAssociative::SetAssociative(const Params *p) 55 : BaseIndexingPolicy(p) 56{ 57} 58 59uint32_t 60SetAssociative::extractSet(const Addr addr) const 61{ 62 return (addr >> setShift) & setMask; 63} 64 65Addr 66SetAssociative::regenerateAddr(const Addr tag, const ReplaceableEntry* entry) 67 const 68{ 69 return (tag << tagShift) | (entry->getSet() << setShift); 70} 71 72std::vector<ReplaceableEntry*> 73SetAssociative::getPossibleEntries(const Addr addr) const 74{ 75 return sets[extractSet(addr)]; 76} 77 78SetAssociative* 79SetAssociativeParams::create() 80{ 81 return new SetAssociative(this); 82} 83