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 System.ComponentModel;

    21 using SymbianUtils.BasicTypes;

    22 using SymbianStructuresLib.Arm.Registers;

    23 using SymbianInstructionLib.Arm.Instructions.Common;

    24 

    25 namespace SymbianInstructionLib.Arm.Instructions.Arm.DataProcessing

    26 {

    27     public abstract class Arm_DataProcessing_Shift : Arm_DataProcessing

    28     {

    29         #region Enumerations

    30         public enum TShiftType

    31         {

    32             EShiftNone = -1,

    33             EShiftLogicalLeft = 0,

    34             EShiftLogicalRight,

    35             EShiftArithmeticRight,

    36             EShiftRotateRight,

    37             EShiftRotateRightWithExtend

    38         }

    39         #endregion

    40 

    41         #region Constructors

    42         protected Arm_DataProcessing_Shift( TEncoding aEncoding )

    43             : base( aEncoding )

    44         {

    45         }

    46         #endregion

    47 

    48         #region From ArmBaseInstruction

    49         protected override bool DoQueryInvolvementAsSource( TArmRegisterType aRegister )

    50         {

    51             TArmRegisterType reg1 = base.Rn;

    52             TArmRegisterType reg2 = this.Rm;

    53             return ( aRegister == reg1 || aRegister == reg2 );

    54         }

    55         #endregion

    56 

    57         #region From ArmInstruction

    58         public override bool Matches( uint aOpCode )

    59         {

    60             // If the following values hold true then it is not a data processing instruction at all.

    61             //

    62             // bit[25] == 0

    63             // bit[ 4] == 1

    64             // bit[ 7] == 1

    65             //

    66             bool match = base.Matches( aOpCode );

    67             if ( match )

    68             {

    69                 SymUInt32 raw = aOpCode;

    70                 if ( raw[ 25 ] == SymBit.EClear && raw[ 4 ] == SymBit.ESet && raw[ 7 ] == SymBit.ESet )

    71                 {

    72                     match = false;

    73                 }

    74             }

    75             //

    76             return match;

    77         }

    78         #endregion

    79 

    80         #region API

    81         #endregion

    82 

    83         #region Properties

    84         public virtual TShiftType ShiftType

    85         {

    86             get

    87             {

    88                 TShiftType ret = (TShiftType) base.AIRawValue[ 6, 5 ].ToUInt();

    89                 return ret;

    90             }

    91         }

    92 

    93         public TArmRegisterType Rm

    94         {

    95             get

    96             {

    97                 TArmRegisterType ret = (TArmRegisterType) base.AIRawValue[ 3, 0 ].ToUInt();

    98                 return ret;

    99             }

   100         }

   101         #endregion

   102 

   103         #region Internal methods

   104         #endregion

   105 

   106         #region Data members

   107         #endregion

   108     }

   109 }

   110