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/*
* Copyright (c) 2007 The Hewlett-Packard Development Company
* All rights reserved.
*
* Redistribution and use of this software in source and binary forms,
* with or without modification, are permitted provided that the
* following conditions are met:
*
* The software must be used only for Non-Commercial Use which means any
* use which is NOT directed to receiving any direct monetary
* compensation for, or commercial advantage from such use. Illustrative
* examples of non-commercial use are academic research, personal study,
* teaching, education and corporate research & development.
* Illustrative examples of commercial use are distributing products for
* commercial advantage and providing services using the software for
* commercial advantage.
*
* If you wish to use this software or functionality therein that may be
* covered by patents for commercial use, please contact:
* Director of Intellectual Property Licensing
* Office of Strategy and Technology
* Hewlett-Packard Company
* 1501 Page Mill Road
* Palo Alto, California 94304
*
* 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 HOLDER(s), HEWLETT-PACKARD COMPANY, nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission. No right of
* sublicense is granted herewith. Derivatives of the software and
* output created using the software may be prepared, but only for
* Non-Commercial Uses. Derivatives of the software may be shared with
* others provided: (i) the others agree to abide by the list of
* conditions herein which includes the Non-Commercial Use restrictions;
* and (ii) such Derivatives of the software include the above copyright
* notice to acknowledge the contribution from this software where
* applicable, this list of conditions and the disclaimer below.
*
* 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/intregs.hh"
#include "arch/x86/types.hh"
#include "arch/x86/x86_traits.hh"
#include "sim/host.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
// These enumerate all the registers for dependence tracking.
enum DependenceTags {
//There are 16 microcode registers at the moment. This is an
//unusually large constant to make sure there isn't overflow.
FP_Base_DepTag = 128,
Ctrl_Base_DepTag =
FP_Base_DepTag +
//mmx/x87 registers
8 +
//xmm registers
16 +
//The indices that are mapped over the fp stack
8
};
// semantically meaningful register indices
//There is no such register in X86
const int ZeroReg = NUM_INTREGS;
const int StackPointerReg = INTREG_RSP;
//X86 doesn't seem to have a link register
const int ReturnAddressReg = 0;
const int ReturnValueReg = INTREG_RAX;
const int FramePointerReg = INTREG_RBP;
const int ArgumentReg[] = {
INTREG_RDI,
INTREG_RSI,
INTREG_RDX,
//This argument register is r10 for syscalls and rcx for C.
INTREG_R10W,
//INTREG_RCX,
INTREG_R8W,
INTREG_R9W
};
const int NumArgumentRegs = sizeof(ArgumentReg) / sizeof(const int);
// Some OS syscalls use a second register (rdx) to return a second
// value
const int SyscallPseudoReturnReg = INTREG_RDX;
//XXX These numbers are bogus
const int MaxInstSrcRegs = 10;
const int MaxInstDestRegs = 10;
//4k. This value is not constant on x86.
const int LogVMPageSize = 12;
const int VMPageSize = (1 << LogVMPageSize);
const int PageShift = 13;
const int PageBytes = 1ULL << PageShift;
const int BranchPredAddrShiftAmt = 0;
StaticInstPtr decodeInst(ExtMachInst);
const Addr LoadAddrMask = ULL(0xffffffffff);
};
#endif // __ARCH_X86_ISATRAITS_HH__
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