xref: /gem5/src/arch/x86/emulenv.hh

/*
 * Copyright (c) 2007 The Hewlett-Packard Development Company
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 * Redistributions of source code must retain the above copyright notice,
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 * 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
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 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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 * Authors: Gabe Black
 */

#ifndef __ARCH_X86_EMULENV_HH__
#define __ARCH_X86_EMULENV_HH__

#include "arch/x86/intregs.hh"
#include "arch/x86/segmentregs.hh"
#include "arch/x86/types.hh"

namespace X86ISA
{
    struct EmulEnv
    {
        RegIndex reg;
        RegIndex regm;
        SegmentRegIndex seg;
        uint8_t scale;
        RegIndex index;
        RegIndex base;
        int dataSize;
        int addressSize;
        int stackSize;

        EmulEnv(RegIndex _reg, RegIndex _regm,
                int _dataSize, int _addressSize, int _stackSize) :
            reg(_reg), regm(_regm), seg(SEGMENT_REG_DS),
            scale(0), index(NUM_INTREGS),
            base(NUM_INTREGS),
            dataSize(_dataSize), addressSize(_addressSize),
            stackSize(_stackSize)
        {;}

        void doModRM(const ExtMachInst & machInst);
        void setSeg(const ExtMachInst & machInst);
    };
};

#endif // __ARCH_X86_TYPES_HH__