reactos/lib/fast486/fpu.c

/*
 * Fast486 386/486 CPU Emulation Library
 * fpu.c
 *
 * Copyright (C) 2013 Aleksandar Andrejevic <theflash AT sdf DOT lonestar DOT org>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */

/* INCLUDES *******************************************************************/

#include <windef.h>

// #define NDEBUG
#include <debug.h>

#include <fast486.h>
#include "common.h"
#include "opcodes.h"
#include "fpu.h"

/* PUBLIC FUNCTIONS ***********************************************************/

FAST486_OPCODE_HANDLER(Fast486FpuOpcodeD8)
{
    FAST486_MOD_REG_RM ModRegRm;
    BOOLEAN AddressSize = State->SegmentRegs[FAST486_REG_CS].Size;

    /* Get the operands */
    if (!Fast486ParseModRegRm(State, AddressSize, &ModRegRm))
    {
        /* Exception occurred */
        return FALSE;
    }

    FPU_CHECK();

#ifndef FAST486_NO_FPU
    // TODO: NOT IMPLEMENTED
    UNIMPLEMENTED;

    return FALSE;
#else
    /* Do nothing */
    return TRUE;
#endif
}

FAST486_OPCODE_HANDLER(Fast486FpuOpcodeD9)
{
    FAST486_MOD_REG_RM ModRegRm;
    BOOLEAN AddressSize = State->SegmentRegs[FAST486_REG_CS].Size;

    /* Get the operands */
    if (!Fast486ParseModRegRm(State, AddressSize, &ModRegRm))
    {
        /* Exception occurred */
        return FALSE;
    }

    FPU_CHECK();

#ifndef FAST486_NO_FPU
    // TODO: NOT IMPLEMENTED
    UNIMPLEMENTED;

    return FALSE;
#else
    /* Do nothing */
    return TRUE;
#endif
}

FAST486_OPCODE_HANDLER(Fast486FpuOpcodeDA)
{
    FAST486_MOD_REG_RM ModRegRm;
    BOOLEAN AddressSize = State->SegmentRegs[FAST486_REG_CS].Size;

    /* Get the operands */
    if (!Fast486ParseModRegRm(State, AddressSize, &ModRegRm))
    {
        /* Exception occurred */
        return FALSE;
    }

    FPU_CHECK();

#ifndef FAST486_NO_FPU
    // TODO: NOT IMPLEMENTED
    UNIMPLEMENTED;

    return FALSE;
#else
    /* Do nothing */
    return TRUE;
#endif
}

FAST486_OPCODE_HANDLER(Fast486FpuOpcodeDB)
{
    FAST486_MOD_REG_RM ModRegRm;
    BOOLEAN AddressSize = State->SegmentRegs[FAST486_REG_CS].Size;

    /* Get the operands */
    if (!Fast486ParseModRegRm(State, AddressSize, &ModRegRm))
    {
        /* Exception occurred */
        return FALSE;
    }

    FPU_CHECK();

#ifndef FAST486_NO_FPU
    // TODO: NOT IMPLEMENTED
    UNIMPLEMENTED;

    return FALSE;
#else
    /* Do nothing */
    return TRUE;
#endif
}

FAST486_OPCODE_HANDLER(Fast486FpuOpcodeDC)
{
    FAST486_MOD_REG_RM ModRegRm;
    BOOLEAN AddressSize = State->SegmentRegs[FAST486_REG_CS].Size;

    /* Get the operands */
    if (!Fast486ParseModRegRm(State, AddressSize, &ModRegRm))
    {
        /* Exception occurred */
        return FALSE;
    }

    FPU_CHECK();

#ifndef FAST486_NO_FPU
    // TODO: NOT IMPLEMENTED
    UNIMPLEMENTED;

    return FALSE;
#else
    /* Do nothing */
    return TRUE;
#endif
}

FAST486_OPCODE_HANDLER(Fast486FpuOpcodeDD)
{
    FAST486_MOD_REG_RM ModRegRm;
    BOOLEAN AddressSize = State->SegmentRegs[FAST486_REG_CS].Size;

    /* Get the operands */
    if (!Fast486ParseModRegRm(State, AddressSize, &ModRegRm))
    {
        /* Exception occurred */
        return FALSE;
    }

    FPU_CHECK();

#ifndef FAST486_NO_FPU
    // TODO: NOT IMPLEMENTED
    UNIMPLEMENTED;

    return FALSE;
#else
    /* Do nothing */
    return TRUE;
#endif
}

FAST486_OPCODE_HANDLER(Fast486FpuOpcodeDE)
{
    FAST486_MOD_REG_RM ModRegRm;
    BOOLEAN AddressSize = State->SegmentRegs[FAST486_REG_CS].Size;

    /* Get the operands */
    if (!Fast486ParseModRegRm(State, AddressSize, &ModRegRm))
    {
        /* Exception occurred */
        return FALSE;
    }

    FPU_CHECK();

#ifndef FAST486_NO_FPU
    // TODO: NOT IMPLEMENTED
    UNIMPLEMENTED;

    return FALSE;
#else
    /* Do nothing */
    return TRUE;
#endif
}

FAST486_OPCODE_HANDLER(Fast486FpuOpcodeDF)
{
    FAST486_MOD_REG_RM ModRegRm;
    BOOLEAN AddressSize = State->SegmentRegs[FAST486_REG_CS].Size;

    /* Get the operands */
    if (!Fast486ParseModRegRm(State, AddressSize, &ModRegRm))
    {
        /* Exception occurred */
        return FALSE;
    }

    FPU_CHECK();

#ifndef FAST486_NO_FPU
    // TODO: NOT IMPLEMENTED
    UNIMPLEMENTED;

    return FALSE;
#else
    /* Do nothing */
    return TRUE;
#endif
}

/* EOF */