author | Jussi Ryoma <ext-jussi.s.ryoma@nokia.com> |
Fri, 27 Aug 2010 12:21:46 +0300 | |
changeset 3 | 045ade241ef5 |
parent 0 | 818e61de6cd1 |
permissions | -rw-r--r-- |
0
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/* |
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* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: |
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* |
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*/ |
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using System; |
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using System.Collections.Generic; |
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using System.Text; |
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using System.Text.RegularExpressions; |
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using System.IO; |
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using SymbianUtils.DataBuffer.Entry; |
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using SymbianUtils.Range; |
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using SymbianStackLib.Exceptions; |
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|
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namespace SymbianStackLib.AddressInfo |
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{ |
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/// <summary> |
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/// Stack flows from the base upwards: |
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/// |
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/// -------------- TOP ---------------- 0x402000 |
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/// | |
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/// | Unused Stack |
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/// | |
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/// |----------- CURRENT SP ----------- 0x4033b8 |
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/// | |
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/// | ^ |
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/// | | |
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/// | |
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/// | Used Stack [Stack |
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/// | Pointer |
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/// | | Range] |
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/// | | |
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/// | | |
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/// | |
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/// -------------- BASE --------------- 0x407000 |
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/// </summary> |
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public sealed class StackAddressInfo |
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{ |
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#region Constructors |
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internal StackAddressInfo() |
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{ |
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} |
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#endregion |
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|
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#region API |
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public void Set( uint aSP, uint aTop, uint aBase ) |
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{ |
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Pointer = aSP; |
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Top = aTop; |
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Base = aBase; |
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} |
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|
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internal void Validate() |
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{ |
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if ( Top != 0 && Base < Top ) |
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{ |
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throw new StackAddressException( StackAddressException.TType.ETypeBaseAddressBeforeTopAddress ); |
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} |
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else if ( Base != 0 && Top > Base ) |
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{ |
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throw new StackAddressException( StackAddressException.TType.ETypeTopAddressAfterBaseAddress ); |
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} |
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else if ( Pointer == 0 ) |
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{ |
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throw new StackAddressException( StackAddressException.TType.ETypePointerIsNull ); |
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} |
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else if ( Pointer > Base ) |
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{ |
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throw new StackAddressException( StackAddressException.TType.ETypePointerOutOfBounds ); |
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} |
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else if ( Pointer < Top ) |
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{ |
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// Not an error as possibly a stack overflow... |
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} |
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} |
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|
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internal bool IsWithinStackDomain( DataBufferByte aEntry ) |
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{ |
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bool ret = Range.Contains( aEntry.Address ); |
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return ret; |
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} |
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|
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internal bool IsWithinCurrentStackDomain( DataBufferByte aEntry ) |
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{ |
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bool ret = StackPointerRange.Contains( aEntry.Address ); |
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return ret; |
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} |
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#endregion |
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|
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#region Properties |
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public uint Base |
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{ |
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get { return iBase; } |
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set |
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{ |
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iBase = value; |
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} |
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} |
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|
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public uint Top |
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112 |
{ |
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113 |
get { return iTop; } |
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114 |
set |
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115 |
{ |
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116 |
iTop = value; |
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117 |
} |
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118 |
} |
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119 |
|
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120 |
public uint Pointer |
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121 |
{ |
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122 |
get { return iPointer; } |
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123 |
set |
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124 |
{ |
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125 |
iPointer = value; |
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126 |
|
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// Don't record that we've set the stack pointer if somebody is just |
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128 |
// zeroing it out. |
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129 |
if ( value != 0 ) |
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130 |
{ |
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HaveSetStackPointer = true; |
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132 |
} |
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133 |
} |
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134 |
} |
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135 |
|
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136 |
public AddressRange Range |
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137 |
{ |
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138 |
get { return new AddressRange( Top, Base ); } |
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139 |
set |
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140 |
{ |
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141 |
Top = value.Min; |
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Base = value.Max; |
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143 |
} |
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144 |
} |
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145 |
|
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146 |
public AddressRange StackPointerRange |
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147 |
{ |
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148 |
get |
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149 |
{ |
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150 |
AddressRange ret = new AddressRange( Pointer, Base ); |
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151 |
|
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152 |
// If we don't have a valid SP value, then use the entire stack |
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153 |
if ( Pointer == 0 ) |
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154 |
{ |
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155 |
ret = Range; |
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156 |
} |
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157 |
// |
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158 |
return ret; |
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159 |
} |
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160 |
} |
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161 |
|
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162 |
public AddressRange StackPointerRangeWithExtensionArea |
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163 |
{ |
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164 |
get |
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165 |
{ |
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166 |
AddressRange ret; |
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167 |
// |
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168 |
uint pointer = Pointer; |
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169 |
uint pointerMinusExtension = pointer - KStackRangeExtension; |
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170 |
if ( pointer == 0 || pointerMinusExtension < 0 || pointerMinusExtension < Top ) |
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171 |
{ |
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172 |
ret = Range; |
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173 |
} |
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174 |
else |
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175 |
{ |
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176 |
ret = StackPointerRange; |
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177 |
ret.Min = pointerMinusExtension; |
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178 |
} |
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179 |
// |
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180 |
return ret; |
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181 |
} |
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182 |
} |
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183 |
#endregion |
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184 |
|
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185 |
#region Internal methods |
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186 |
internal bool HaveSetStackPointer |
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187 |
{ |
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188 |
get { return iHaveSetSP; } |
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189 |
set { iHaveSetSP = value; } |
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190 |
} |
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191 |
#endregion |
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192 |
|
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193 |
#region Internal constants |
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194 |
private const int KStackRangeExtension = 12 * 4; |
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195 |
#endregion |
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196 |
|
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197 |
#region Data members |
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198 |
private uint iBase = 0; |
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199 |
private uint iTop = 0; |
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200 |
private uint iPointer = 0; |
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201 |
private bool iHaveSetSP = false; |
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202 |
#endregion |
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203 |
} |
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204 |
} |