msr.hh revision 9875:5cfad3486991
1/* 2 * Copyright (c) 2011 Google 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are 7 * met: redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer; 9 * redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution; 12 * neither the name of the copyright holders nor the names of its 13 * contributors may be used to endorse or promote products derived from 14 * this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * Authors: Gabe Black 29 */ 30 31#ifndef __ARCH_X86_REG_MSR_HH__ 32#define __ARCH_X86_REG_MSR_HH__ 33 34#include "arch/x86/regs/misc.hh" 35#include "base/hashmap.hh" 36#include "base/types.hh" 37 38namespace X86ISA 39{ 40 41typedef m5::hash_map<Addr, MiscRegIndex> MsrMap; 42 43/** 44 * Map between MSR addresses and their corresponding misc registers. 45 * 46 * @note This map is usually only used when enumeration of supported 47 * MSRs is needed (e.g., in virtualized CPUs). Code that needs to 48 * look-up specific MSRs should use msrAddrToIndex(). 49 */ 50extern const MsrMap msrMap; 51 52/** 53 * Find and return the misc reg corresponding to an MSR address. 54 * 55 * Look for an MSR (addr) in #msrMap and return the 56 * corresponding misc reg in regNum. The value of regNum is undefined 57 * if the MSR was not found. 58 * 59 * @param regNum misc reg index (out). 60 * @param addr MSR address 61 * @return True if the MSR was found, false otherwise. 62 */ 63bool msrAddrToIndex(MiscRegIndex ®Num, Addr addr); 64 65} // namespace X86ISA 66 67#endif // __ARCH_X86_REG_MSR_HH__ 68