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/*
* Copyright (c) 2007 The Hewlett-Packard Development Company
* All rights reserved.
*
* The license below extends only to copyright in the software and shall
* not be construed as granting a license to any other intellectual
* property including but not limited to intellectual property relating
* to a hardware implementation of the functionality of the software
* licensed hereunder. You may use the software subject to the license
* terms below provided that you ensure that this notice is replicated
* unmodified and in its entirety in all distributions of the software,
* modified or unmodified, in source code or in binary form.
*
* 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_ISATRAITS_HH__
#define __ARCH_X86_ISATRAITS_HH__
#include "arch/x86/types.hh"
#include "arch/x86/x86_traits.hh"
#include "base/types.hh"
class StaticInstPtr;
namespace LittleEndianGuest {}
namespace X86ISA
{
//This makes sure the little endian version of certain functions
//are used.
using namespace LittleEndianGuest;
// X86 does not have a delay slot
#define ISA_HAS_DELAY_SLOT 0
// X86 NOP (XCHG rAX, rAX)
//XXX This needs to be set to an intermediate instruction struct
//which encodes this instruction
//4k. This value is not constant on x86.
const int LogVMPageSize = 12;
const int VMPageSize = (1 << LogVMPageSize);
const int PageShift = 12;
const int PageBytes = 1ULL << PageShift;
const int BranchPredAddrShiftAmt = 0;
StaticInstPtr decodeInst(ExtMachInst);
// Memory accesses can be unaligned
const bool HasUnalignedMemAcc = true;
const ExtMachInst NoopMachInst = {
0x0, // No legacy prefixes.
0x0, // No rex prefix.
{ 1, 0x0, 0x0, 0x90 }, // One opcode byte, 0x90.
0x0, 0x0, // No modrm or sib.
0, 0, // No immediate or displacement.
8, 8, 8, // All sizes are 8.
0, // Displacement size is 0.
SixtyFourBitMode // Behave as if we're in 64 bit
// mode (this doesn't actually matter).
};
};
#endif // __ARCH_X86_ISATRAITS_HH__
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