1 /*

     2 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). 

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 * 

    14 * Description:

    15 *

    16 */

    17 using System;

    18 using System.Collections.Generic;

    19 using System.Text;

    20 using SymbianUtils.BasicTypes;

    21 using SymbianStructuresLib.Arm.Registers;

    22 using SymbianStructuresLib.Arm.Instructions;

    23 using SymbianInstructionLib.Arm.Instructions.Common;

    24 

    25 namespace SymbianInstructionLib.Arm.Instructions.Thumb.DataProcessing

    26 {

    27     public abstract class Thumb_AddOrSubtract_2Regs : Thumb_AddOrSubtract

    28     {

    29         #region Constructors

    30         protected Thumb_AddOrSubtract_2Regs()

    31         {

    32         }

    33         #endregion

    34 

    35         #region From Thumb_AddOrSubtract

    36         public override TArmDataProcessingType OperationType

    37         {

    38             get

    39             {

    40                 TArmDataProcessingType ret = TArmDataProcessingType.ADD;

    41                 //

    42                 if ( base.AIRawValue[ 9 ] == SymBit.ESet )

    43                 {

    44                     ret = TArmDataProcessingType.SUB;

    45                 }

    46                 //

    47                 return ret;

    48             }

    49         }

    50         #endregion

    51 

    52         #region From ArmBaseInstruction

    53         protected override bool DoQueryInvolvementAsSource( TArmRegisterType aRegister )

    54         {

    55             TArmRegisterType reg = this.Rn;

    56             return ( aRegister == reg );

    57         }

    58         #endregion

    59 

    60         #region Properties

    61         public TArmRegisterType Rn

    62         {

    63             get

    64             {

    65                 TArmRegisterType ret = (TArmRegisterType) RnByte;

    66                 return ret;

    67             }

    68         }

    69 

    70         public override TArmRegisterType Rd

    71         {

    72             get

    73             {

    74                 TArmRegisterType ret = (TArmRegisterType) RdByte;

    75                 return ret;

    76             }

    77         }

    78         #endregion

    79 

    80         #region Internal methods

    81         protected byte RnByte

    82         {

    83             get

    84             {

    85                 byte ret = (byte) KMaskRn.Apply( base.AIRawValue );

    86                 return ret;

    87             }

    88         }

    89 

    90         protected byte RdByte

    91         {

    92             get

    93             {

    94                 byte ret = (byte) KMaskRd.Apply( base.AIRawValue );

    95                 return ret;

    96             }

    97         }

    98         #endregion

    99 

   100         #region Data members

   101         private static readonly SymMask KMaskRn = new SymMask( 0x38, SymMask.TShiftDirection.ERight, 3 );

   102         private static readonly SymMask KMaskRd = new SymMask( 0x7 );

   103         #endregion

   104     }

   105 }

   106