--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/crashanalysercmd/PerfToolsSharedLibraries/Engine/SymbianInstructionLib/Arm/Instructions/Thumb/DataProcessing/Thumb_AddOrSubtract_SP.cs	Thu Feb 11 15:50:58 2010 +0200
@@ -0,0 +1,95 @@
+/*
+* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). 
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+* 
+* Description:
+*
+*/
+using System;
+using System.Collections.Generic;
+using System.Text;
+using SymbianUtils.BasicTypes;
+using SymbianStructuresLib.Arm.Registers;
+using SymbianStructuresLib.Arm.Instructions;
+using SymbianInstructionLib.Arm.Instructions.Common;
+
+namespace SymbianInstructionLib.Arm.Instructions.Thumb.DataProcessing
+{
+    [ArmRef( "A7.1.9 ADD (7)",  "ADD SP, #<immed_7> * 4" )]
+    [ArmRef( "A7.1.68 SUB (4)", "SUB SP, #<immed_7> * 4" )]
+    public class Thumb_AddOrSubtract_SP : Thumb_AddOrSubtract
+    {
+        #region Constructors
+        public Thumb_AddOrSubtract_SP()
+        {
+            //                         Type   immed_7
+            base.SetMask( "10110000" + "#" + "#######" );
+        }
+        #endregion
+
+        #region From ArmBaseInstruction
+        protected override bool DoQueryInvolvementAsSource( TArmRegisterType aRegister )
+        {
+            // SP acts as source & destination
+            return ( aRegister == TArmRegisterType.EArmReg_SP );
+        }
+        #endregion
+
+        #region From Thumb_AddOrSubtract
+        public override TArmDataProcessingType OperationType
+        {
+            get
+            {
+                TArmDataProcessingType ret = TArmDataProcessingType.ADD;
+                //
+                if ( base.AIRawValue[ 7 ] == SymBit.ESet )
+                {
+                    ret = TArmDataProcessingType.SUB;
+                }
+                //
+                return ret;
+            }
+        }
+        #endregion
+
+        #region Properties
+        public override uint Immediate
+        {
+            get
+            {
+                uint rawValue = ( base.AIRawValue & 0x7F );
+                uint ret = rawValue * 4;
+                return ret;
+            }
+        }
+
+        public override bool SuppliesImmediate
+        {
+            get { return true; }
+        }
+
+        public override TArmRegisterType Rd
+        {
+            get { return TArmRegisterType.EArmReg_SP; }
+        }
+        #endregion
+
+        #region Internal methods
+        #endregion
+
+        #region Data members
+        private static readonly SymMask KMaskRn = new SymMask( 0x38, SymMask.TShiftDirection.ERight, 3 );
+        private static readonly SymMask KMaskRd = new SymMask( 0x7 );
+        #endregion
+    }
+}
+