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 

    21 namespace SymbianStructuresLib.Arm.Registers

    22 {

    23     public enum TArmRegisterBank

    24     {

    25         // Special values

    26         ETypeUnknown = 0,

    27         ETypeException = -1, 

    28         ETypeCommon = -2,

    29         ETypeCoProcessor = -3,

    30         ETypeETM = -4,

    31         ETypeETB = -5,

    32         ETypeCoProSystemControl = -6,

    33 

    34         // Corresponding CPSR binary values

    35         ETypeUser = 0x10,           // 0b10000

    36         ETypeFastInterrupt = 0x11,  // 0b10001

    37         ETypeInterrupt = 0x12,      // 0b10010

    38         ETypeSupervisor = 0x13,     // 0b10011

    39         ETypeAbort = 0x17,          // 0b10111

    40         ETypeUndefined = 0x1B,      // 0b11011

    41         ETypeSystem = 0x1F          // 0b11111

    42     }

    43 

    44     public static class ArmRegisterBankUtils

    45     {

    46         #region API

    47         public static uint MakeStatusRegisterValue( TArmRegisterBank aBank )

    48         {

    49             uint val = 0;

    50             //

    51             switch ( aBank )

    52             {

    53             case TArmRegisterBank.ETypeUser:

    54             case TArmRegisterBank.ETypeFastInterrupt:

    55             case TArmRegisterBank.ETypeInterrupt:

    56             case TArmRegisterBank.ETypeSupervisor:

    57             case TArmRegisterBank.ETypeAbort:

    58             case TArmRegisterBank.ETypeUndefined:

    59             case TArmRegisterBank.ETypeSystem:

    60                 val = (uint) aBank;

    61                 break;

    62             default:

    63                 break;

    64             }

    65             //

    66             return val;

    67         }

    68 

    69         public static TArmRegisterBank ExtractBank( uint aValue )

    70         {

    71             uint val = aValue & KBankMask;

    72             TArmRegisterBank bank = (TArmRegisterBank) val;

    73             //

    74             switch ( bank )

    75             {

    76             case TArmRegisterBank.ETypeUser:

    77             case TArmRegisterBank.ETypeFastInterrupt:

    78             case TArmRegisterBank.ETypeInterrupt:

    79             case TArmRegisterBank.ETypeSupervisor:

    80             case TArmRegisterBank.ETypeAbort:

    81             case TArmRegisterBank.ETypeUndefined:

    82             case TArmRegisterBank.ETypeSystem:

    83                 break;

    84             default:

    85                 bank = TArmRegisterBank.ETypeUndefined;

    86                 break;

    87             }

    88             //

    89             return bank;

    90         }

    91 

    92         public static TArmRegisterBank ExtractBank( ArmRegister aRegister )

    93         {

    94             return ExtractBank( aRegister.Value );

    95         }

    96 

    97         public static string BankAsString( TArmRegisterBank aBank )

    98         {

    99             string ret = string.Empty;

   100             //

   101             switch ( aBank )

   102             {

   103             default:

   104             case TArmRegisterBank.ETypeUnknown:

   105             case TArmRegisterBank.ETypeCommon:

   106                 ret = string.Empty;

   107                 break;

   108             case TArmRegisterBank.ETypeException:

   109                 ret = "EXC";

   110                 break;

   111             case TArmRegisterBank.ETypeCoProcessor:

   112                 ret = "COP";

   113                 break;

   114             case TArmRegisterBank.ETypeAbort:

   115                 ret = "ABT";

   116                 break;

   117             case TArmRegisterBank.ETypeFastInterrupt:

   118                 ret = "FIQ";

   119                 break;

   120             case TArmRegisterBank.ETypeInterrupt:

   121                 ret = "IRQ";

   122                 break;

   123             case TArmRegisterBank.ETypeSupervisor:

   124                 ret = "SVC";

   125                 break;

   126             case TArmRegisterBank.ETypeSystem:

   127                 ret = "SYS";

   128                 break;

   129             case TArmRegisterBank.ETypeUndefined:

   130                 ret = "UND";

   131                 break;

   132             case TArmRegisterBank.ETypeUser:

   133                 ret = "USR";

   134                 break;

   135             }

   136             //

   137             return ret;

   138         }

   139 

   140         public static string BankAsStringLong( TArmRegisterBank aBank )

   141         {

   142             string ret = string.Empty;

   143             //

   144             switch ( aBank )

   145             {

   146             default:

   147             case TArmRegisterBank.ETypeUnknown:

   148             case TArmRegisterBank.ETypeCommon:

   149                 ret = string.Empty;

   150                 break;

   151             case TArmRegisterBank.ETypeException:

   152                 ret = "Exception";

   153                 break;

   154             case TArmRegisterBank.ETypeCoProcessor:

   155                 ret = "Co-processor";

   156                 break;

   157             case TArmRegisterBank.ETypeAbort:

   158                 ret = "Abort";

   159                 break;

   160             case TArmRegisterBank.ETypeFastInterrupt:

   161                 ret = "Fast Interrupt";

   162                 break;

   163             case TArmRegisterBank.ETypeInterrupt:

   164                 ret = "Interrupt";

   165                 break;

   166             case TArmRegisterBank.ETypeSupervisor:

   167                 ret = "Supervisor";

   168                 break;

   169             case TArmRegisterBank.ETypeSystem:

   170                 ret = "System";

   171                 break;

   172             case TArmRegisterBank.ETypeUndefined:

   173                 ret = "Undefined";

   174                 break;

   175             case TArmRegisterBank.ETypeUser:

   176                 ret = "User";

   177                 break;

   178             }

   179             //

   180             return ret;

   181         }

   182         #endregion

   183 

   184         #region Internal constants

   185         private const uint KBankMask = 0x1F; // 11111b

   186         #endregion

   187     }

   188 }