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/*
* Copyright (c) 2011 Google
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Authors: Gabe Black
*/
#ifndef __ARCH_X86_REG_MSR_HH__
#define __ARCH_X86_REG_MSR_HH__
#include "arch/x86/regs/misc.hh"
#include "base/hashmap.hh"
#include "base/types.hh"
namespace X86ISA
{
typedef m5::hash_map<Addr, MiscRegIndex> MsrMap;
/**
* Map between MSR addresses and their corresponding misc registers.
*
* @note This map is usually only used when enumeration of supported
* MSRs is needed (e.g., in virtualized CPUs). Code that needs to
* look-up specific MSRs should use msrAddrToIndex().
*/
extern const MsrMap msrMap;
/**
* Find and return the misc reg corresponding to an MSR address.
*
* Look for an MSR (addr) in #msrMap and return the
* corresponding misc reg in regNum. The value of regNum is undefined
* if the MSR was not found.
*
* @param regNum misc reg index (out).
* @param addr MSR address
* @return True if the MSR was found, false otherwise.
*/
bool msrAddrToIndex(MiscRegIndex ®Num, Addr addr);
} // namespace X86ISA
#endif // __ARCH_X86_REG_MSR_HH__
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