pagetable.hh revision 6216
14159Sgblack@eecs.umich.edu/* 24159Sgblack@eecs.umich.edu * Copyright (c) 2007 The Hewlett-Packard Development Company 34159Sgblack@eecs.umich.edu * All rights reserved. 44159Sgblack@eecs.umich.edu * 54159Sgblack@eecs.umich.edu * Redistribution and use of this software in source and binary forms, 64159Sgblack@eecs.umich.edu * with or without modification, are permitted provided that the 74159Sgblack@eecs.umich.edu * following conditions are met: 84159Sgblack@eecs.umich.edu * 94159Sgblack@eecs.umich.edu * The software must be used only for Non-Commercial Use which means any 104159Sgblack@eecs.umich.edu * use which is NOT directed to receiving any direct monetary 114159Sgblack@eecs.umich.edu * compensation for, or commercial advantage from such use. Illustrative 124159Sgblack@eecs.umich.edu * examples of non-commercial use are academic research, personal study, 134159Sgblack@eecs.umich.edu * teaching, education and corporate research & development. 144159Sgblack@eecs.umich.edu * Illustrative examples of commercial use are distributing products for 154159Sgblack@eecs.umich.edu * commercial advantage and providing services using the software for 164159Sgblack@eecs.umich.edu * commercial advantage. 174159Sgblack@eecs.umich.edu * 184159Sgblack@eecs.umich.edu * If you wish to use this software or functionality therein that may be 194159Sgblack@eecs.umich.edu * covered by patents for commercial use, please contact: 204159Sgblack@eecs.umich.edu * Director of Intellectual Property Licensing 214159Sgblack@eecs.umich.edu * Office of Strategy and Technology 224159Sgblack@eecs.umich.edu * Hewlett-Packard Company 234159Sgblack@eecs.umich.edu * 1501 Page Mill Road 244159Sgblack@eecs.umich.edu * Palo Alto, California 94304 254159Sgblack@eecs.umich.edu * 264159Sgblack@eecs.umich.edu * Redistributions of source code must retain the above copyright notice, 274159Sgblack@eecs.umich.edu * this list of conditions and the following disclaimer. Redistributions 284159Sgblack@eecs.umich.edu * in binary form must reproduce the above copyright notice, this list of 294159Sgblack@eecs.umich.edu * conditions and the following disclaimer in the documentation and/or 304159Sgblack@eecs.umich.edu * other materials provided with the distribution. Neither the name of 314159Sgblack@eecs.umich.edu * the COPYRIGHT HOLDER(s), HEWLETT-PACKARD COMPANY, nor the names of its 324159Sgblack@eecs.umich.edu * contributors may be used to endorse or promote products derived from 334159Sgblack@eecs.umich.edu * this software without specific prior written permission. No right of 344159Sgblack@eecs.umich.edu * sublicense is granted herewith. Derivatives of the software and 354159Sgblack@eecs.umich.edu * output created using the software may be prepared, but only for 364159Sgblack@eecs.umich.edu * Non-Commercial Uses. Derivatives of the software may be shared with 374159Sgblack@eecs.umich.edu * others provided: (i) the others agree to abide by the list of 384159Sgblack@eecs.umich.edu * conditions herein which includes the Non-Commercial Use restrictions; 394159Sgblack@eecs.umich.edu * and (ii) such Derivatives of the software include the above copyright 404159Sgblack@eecs.umich.edu * notice to acknowledge the contribution from this software where 414159Sgblack@eecs.umich.edu * applicable, this list of conditions and the disclaimer below. 424159Sgblack@eecs.umich.edu * 434159Sgblack@eecs.umich.edu * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 444159Sgblack@eecs.umich.edu * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 454159Sgblack@eecs.umich.edu * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 464159Sgblack@eecs.umich.edu * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 474159Sgblack@eecs.umich.edu * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 484159Sgblack@eecs.umich.edu * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 494159Sgblack@eecs.umich.edu * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 504159Sgblack@eecs.umich.edu * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 514159Sgblack@eecs.umich.edu * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 524159Sgblack@eecs.umich.edu * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 534159Sgblack@eecs.umich.edu * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 544159Sgblack@eecs.umich.edu * 554159Sgblack@eecs.umich.edu * Authors: Gabe Black 564159Sgblack@eecs.umich.edu */ 574159Sgblack@eecs.umich.edu 584159Sgblack@eecs.umich.edu#ifndef __ARCH_X86_PAGETABLE_HH__ 594159Sgblack@eecs.umich.edu#define __ARCH_X86_PAGETABLE_HH__ 604159Sgblack@eecs.umich.edu 615124Sgblack@eecs.umich.edu#include <iostream> 625124Sgblack@eecs.umich.edu#include <string> 635124Sgblack@eecs.umich.edu 645237Sgblack@eecs.umich.edu#include "base/bitunion.hh" 654159Sgblack@eecs.umich.edu#include "base/misc.hh" 666216Snate@binkert.org#include "base/types.hh" 674159Sgblack@eecs.umich.edu 685124Sgblack@eecs.umich.educlass Checkpoint; 695124Sgblack@eecs.umich.edu 704159Sgblack@eecs.umich.edunamespace X86ISA 714159Sgblack@eecs.umich.edu{ 725237Sgblack@eecs.umich.edu BitUnion64(VAddr) 735237Sgblack@eecs.umich.edu Bitfield<20, 12> longl1; 745237Sgblack@eecs.umich.edu Bitfield<29, 21> longl2; 755237Sgblack@eecs.umich.edu Bitfield<38, 30> longl3; 765237Sgblack@eecs.umich.edu Bitfield<47, 39> longl4; 775237Sgblack@eecs.umich.edu 785237Sgblack@eecs.umich.edu Bitfield<20, 12> pael1; 795237Sgblack@eecs.umich.edu Bitfield<29, 21> pael2; 805237Sgblack@eecs.umich.edu Bitfield<31, 30> pael3; 815237Sgblack@eecs.umich.edu 825237Sgblack@eecs.umich.edu Bitfield<21, 12> norml1; 835237Sgblack@eecs.umich.edu Bitfield<31, 22> norml2; 845237Sgblack@eecs.umich.edu EndBitUnion(VAddr) 854159Sgblack@eecs.umich.edu 865124Sgblack@eecs.umich.edu struct TlbEntry 874159Sgblack@eecs.umich.edu { 885124Sgblack@eecs.umich.edu // The base of the physical page. 895184Sgblack@eecs.umich.edu Addr paddr; 905184Sgblack@eecs.umich.edu 915184Sgblack@eecs.umich.edu // The beginning of the virtual page this entry maps. 925184Sgblack@eecs.umich.edu Addr vaddr; 935184Sgblack@eecs.umich.edu // The size of the page this entry represents. 945184Sgblack@eecs.umich.edu Addr size; 955184Sgblack@eecs.umich.edu 965124Sgblack@eecs.umich.edu // Read permission is always available, assuming it isn't blocked by 975124Sgblack@eecs.umich.edu // other mechanisms. 985184Sgblack@eecs.umich.edu bool writable; 995124Sgblack@eecs.umich.edu // Whether this page is accesible without being in supervisor mode. 1005124Sgblack@eecs.umich.edu bool user; 1015124Sgblack@eecs.umich.edu // Whether to use write through or write back. M5 ignores this and 1025124Sgblack@eecs.umich.edu // lets the caches handle the writeback policy. 1035124Sgblack@eecs.umich.edu //bool pwt; 1045124Sgblack@eecs.umich.edu // Whether the page is cacheable or not. 1055124Sgblack@eecs.umich.edu bool uncacheable; 1065124Sgblack@eecs.umich.edu // Whether or not to kick this page out on a write to CR3. 1075124Sgblack@eecs.umich.edu bool global; 1085124Sgblack@eecs.umich.edu // A bit used to form an index into the PAT table. 1095124Sgblack@eecs.umich.edu bool patBit; 1105124Sgblack@eecs.umich.edu // Whether or not memory on this page can be executed. 1115124Sgblack@eecs.umich.edu bool noExec; 1125124Sgblack@eecs.umich.edu 1135184Sgblack@eecs.umich.edu TlbEntry(Addr asn, Addr _vaddr, Addr _paddr); 1145184Sgblack@eecs.umich.edu TlbEntry() {} 1155124Sgblack@eecs.umich.edu 1165877Shsul@eecs.umich.edu void 1175877Shsul@eecs.umich.edu updateVaddr(Addr new_vaddr) 1185877Shsul@eecs.umich.edu { 1195877Shsul@eecs.umich.edu vaddr = new_vaddr; 1205877Shsul@eecs.umich.edu } 1215877Shsul@eecs.umich.edu 1225184Sgblack@eecs.umich.edu Addr pageStart() 1235184Sgblack@eecs.umich.edu { 1245184Sgblack@eecs.umich.edu return paddr; 1255184Sgblack@eecs.umich.edu } 1265124Sgblack@eecs.umich.edu 1275124Sgblack@eecs.umich.edu void serialize(std::ostream &os); 1285124Sgblack@eecs.umich.edu void unserialize(Checkpoint *cp, const std::string §ion); 1294159Sgblack@eecs.umich.edu }; 1304159Sgblack@eecs.umich.edu} 1314159Sgblack@eecs.umich.edu 1324159Sgblack@eecs.umich.edu#endif 133