pagetable.hh revision 7402:84a13fca7205
1/* 2 * Copyright (c) 2010 ARM Limited 3 * All rights reserved 4 * 5 * The license below extends only to copyright in the software and shall 6 * not be construed as granting a license to any other intellectual 7 * property including but not limited to intellectual property relating 8 * to a hardware implementation of the functionality of the software 9 * licensed hereunder. You may use the software subject to the license 10 * terms below provided that you ensure that this notice is replicated 11 * unmodified and in its entirety in all distributions of the software, 12 * modified or unmodified, in source code or in binary form. 13 * 14 * Copyright (c) 2002-2005 The Regents of The University of Michigan 15 * All rights reserved. 16 * 17 * Redistribution and use in source and binary forms, with or without 18 * modification, are permitted provided that the following conditions are 19 * met: redistributions of source code must retain the above copyright 20 * notice, this list of conditions and the following disclaimer; 21 * redistributions in binary form must reproduce the above copyright 22 * notice, this list of conditions and the following disclaimer in the 23 * documentation and/or other materials provided with the distribution; 24 * neither the name of the copyright holders nor the names of its 25 * contributors may be used to endorse or promote products derived from 26 * this software without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 29 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 30 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 31 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 32 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 33 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 34 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 35 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 36 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 37 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 38 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 39 * 40 * Authors: Nathan Binkert 41 * Steve Reinhardt 42 * Ali Saidi 43 */ 44 45#ifndef __ARCH_ARM_PAGETABLE_H__ 46#define __ARCH_ARM_PAGETABLE_H__ 47 48#include "arch/arm/isa_traits.hh" 49#include "arch/arm/utility.hh" 50#include "arch/arm/vtophys.hh" 51#include "config/full_system.hh" 52 53namespace ArmISA { 54 55struct VAddr 56{ 57 VAddr(Addr a) { panic("not implemented yet."); } 58}; 59 60 61// ITB/DTB page table entry 62struct PTE 63{ 64 void serialize(std::ostream &os) 65 { 66 panic("Need to implement PTE serialization\n"); 67 } 68 69 void unserialize(Checkpoint *cp, const std::string §ion) 70 { 71 panic("Need to implement PTE serialization\n"); 72 } 73 74}; 75 76// ITB/DTB table entry 77struct TlbEntry 78{ 79 Addr tag; // virtual page number tag 80 Addr ppn; // physical page number 81 uint8_t asn; // address space number 82 bool valid; // valid page table entry 83 84 85 //Construct an entry that maps to physical address addr. 86 TlbEntry(Addr _asn, Addr _vaddr, Addr _paddr) 87 { 88 tag = _vaddr >> PageShift; 89 ppn = _paddr >> PageShift; 90 asn = _asn; 91 valid = true; 92 } 93 94 TlbEntry() 95 {} 96 97 void 98 updateVaddr(Addr new_vaddr) 99 { 100 tag = new_vaddr >> PageShift; 101 } 102 103 Addr 104 pageStart() 105 { 106 return ppn << PageShift; 107 } 108 109 void serialize(std::ostream &os) { panic("Need to Implement\n"); } 110 void unserialize(Checkpoint *cp, const std::string §ion) 111 { panic("Need to Implement\n");} 112}; 113 114 115 116}; 117#endif // __ARCH_ARM_PAGETABLE_H__ 118 119