1/*
2 * Copyright (c) 2007-2008 The Hewlett-Packard Development Company
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

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36 *
37 * Authors: Gabe Black
38 */
39
40#include <cstring>
41
42#include "arch/x86/insts/microldstop.hh"
43#include "arch/x86/regs/misc.hh"
44#include "arch/x86/regs/msr.hh"
45#include "arch/x86/faults.hh"
46#include "arch/x86/pagetable.hh"
47#include "arch/x86/tlb.hh"
48#include "arch/x86/x86_traits.hh"
49#include "base/bitfield.hh"
50#include "base/trace.hh"
51#include "config/full_system.hh"
52#include "cpu/base.hh"

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173TLB::translateInt(RequestPtr req, ThreadContext *tc)
174{
175 DPRINTF(TLB, "Addresses references internal memory.\n");
176 Addr vaddr = req->getVaddr();
177 Addr prefix = (vaddr >> 3) & IntAddrPrefixMask;
178 if (prefix == IntAddrPrefixCPUID) {
179 panic("CPUID memory space not yet implemented!\n");
180 } else if (prefix == IntAddrPrefixMSR) {
181 vaddr = (vaddr >> 3) & ~IntAddrPrefixMask;
182 req->setFlags(Request::MMAPPED_IPR);
183
184 MiscRegIndex regNum;
185 if (!msrAddrToIndex(regNum, vaddr))
186 return new GeneralProtection(0);
187
188 //The index is multiplied by the size of a MiscReg so that
189 //any memory dependence calculations will not see these as
190 //overlapping.
191 req->setPaddr((Addr)regNum * sizeof(MiscReg));
192 return NoFault;
193 } else if (prefix == IntAddrPrefixIO) {
194 // TODO If CPL > IOPL or in virtual mode, check the I/O permission
195 // bitmap in the TSS.
196
197 Addr IOPort = vaddr & ~IntAddrPrefixMask;
198 // Make sure the address fits in the expected 16 bit IO address
199 // space.

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