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.Text; |
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using System.Threading; |
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using System.ComponentModel; |
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using System.Collections.Generic; |
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using System.IO; |
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using SymbianUtils.DataBuffer.Entry; |
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using SymbianStructuresLib.Arm.Registers; |
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using SymbianStructuresLib.CodeSegments; |
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using SymbianStructuresLib.Debug.Symbols; |
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using SymbianUtils; |
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using SymbianUtils.Range; |
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using SymbianUtils.Utilities; |
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using SymbianDebugLib.PluginAPI.Types; |
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using SymbianDebugLib.Engine; |
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using SymbianStackLib.Data.Source; |
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using SymbianStackLib.Data.Output; |
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using SymbianStackLib.Data.Output.Entry; |
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using SymbianStackLib.Interfaces; |
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using SymbianStackLib.Algorithms; |
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|
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namespace SymbianStackAlgorithmBasic |
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{ |
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internal class StackAlgBasic : StackAlgorithm |
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{ |
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#region Constructors |
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public StackAlgBasic( IStackAlgorithmManager aManager, IStackAlgorithmObserver aObserver ) |
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: base( aManager, aObserver ) |
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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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#endregion |
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|
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#region Properties |
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#endregion |
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|
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#region From StackAlgorithm |
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public override bool IsAvailable() |
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{ |
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// This is always available |
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return true; |
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} |
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|
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public override string Name |
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{ |
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get { return "Basic"; } |
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} |
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|
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public override int Priority |
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{ |
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get { return 200; } |
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} |
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#endregion |
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|
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#region From AsyncReaderBase |
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protected override void PerformOperation() |
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{ |
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// Get the source data we need to reconstruct and signal we're about to start |
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StackSourceData sourceData = base.SourceData; |
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|
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// Get the output data sink |
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StackOutputData outputData = base.OutputData; |
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outputData.Clear(); |
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outputData.AlgorithmName = Name; |
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// Get the address range of the stack pointer data |
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AddressRange pointerRange = base.Engine.AddressInfo.StackPointerRange; |
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AddressRange pointerRangeExtended = base.Engine.AddressInfo.StackPointerRangeWithExtensionArea; |
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// Indicates if we added LR and PC to the call stack |
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bool addedLRandPC = false; |
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// Get registers |
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ArmRegisterCollection regs = base.Engine.Registers; |
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|
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foreach ( DataBufferUint sourceEntry in sourceData.GetUintEnumerator() ) |
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{ |
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// Check if it is within the stack domain, taking into account |
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// our extended range |
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if ( pointerRangeExtended.Contains( sourceEntry.Address ) ) |
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{ |
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StackOutputEntry outputEntry = new StackOutputEntry( sourceEntry.Address, sourceEntry.Uint ); |
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|
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// Is it the element tht corresponds to the current value of SP? |
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bool isCurrentSPEntry = ( outputEntry.AddressRange.Contains( base.Engine.AddressInfo.Pointer ) ); |
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outputEntry.IsCurrentStackPointerEntry = isCurrentSPEntry; |
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// Is it within the pure 'stack pointer' address range? |
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bool outsidePureStackPointerRange = !pointerRange.Contains( sourceEntry.Address ); |
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outputEntry.IsOutsideCurrentStackRange = outsidePureStackPointerRange; |
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109 |
|
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110 |
// These are never accurate, but neither are they ghosts |
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111 |
outputEntry.IsAccurate = false; |
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112 |
outputEntry.IsGhost = false; |
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113 |
|
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114 |
// Save entry |
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115 |
EmitElement( outputEntry ); |
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116 |
|
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117 |
// If we're inside the stack address range, then poke in the PC and LR values |
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118 |
if ( isCurrentSPEntry ) |
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119 |
{ |
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120 |
System.Diagnostics.Debug.Assert( !addedLRandPC ); |
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121 |
addedLRandPC = AddLRAndPC(); |
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122 |
} |
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123 |
} |
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124 |
else |
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125 |
{ |
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126 |
// Nope, ignore it... |
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127 |
} |
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128 |
|
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129 |
NotifyEvent( TEvent.EReadingProgress ); |
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130 |
++iDWordIndex; |
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131 |
} |
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132 |
|
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133 |
// If the stack overflowed, then SP might be outside of the stack range. Therefore |
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134 |
// LR and PC will not be added yet. |
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135 |
if ( !addedLRandPC ) |
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136 |
{ |
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137 |
AddLRAndPC(); |
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138 |
} |
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139 |
} |
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140 |
|
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141 |
protected override long Size |
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142 |
{ |
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143 |
get |
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144 |
{ |
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145 |
int bytes = base.SourceData.Count; |
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146 |
int dWords = bytes / 4; |
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147 |
return dWords; |
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148 |
} |
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149 |
} |
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150 |
|
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151 |
protected override long Position |
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152 |
{ |
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153 |
get |
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154 |
{ |
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155 |
return iDWordIndex; |
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156 |
} |
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157 |
} |
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158 |
#endregion |
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159 |
|
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160 |
#region Internal methods |
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161 |
private bool AddLRAndPC() |
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162 |
{ |
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163 |
bool addedLRandPC = false; |
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164 |
// |
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165 |
ArmRegisterCollection regs = base.Engine.Registers; |
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166 |
|
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167 |
// If we're inside the stack address range, then poke in the PC and LR values |
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168 |
if ( regs.Count > 0 ) |
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169 |
{ |
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170 |
// Working bottom up, so LR should go on the stack first |
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171 |
if ( regs.Contains( TArmRegisterType.EArmReg_LR ) ) |
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172 |
{ |
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173 |
ArmRegister regLR = regs[ TArmRegisterType.EArmReg_LR ]; |
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174 |
|
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175 |
StackOutputEntry entryLR = new StackOutputEntry( 0, regLR.Value ); |
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176 |
entryLR.IsRegisterBasedEntry = true; |
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177 |
entryLR.IsOutsideCurrentStackRange = true; |
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178 |
entryLR.AssociatedRegister = regLR.RegType; |
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179 |
EmitElement( entryLR ); |
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180 |
} |
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181 |
|
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182 |
// Then the PC... |
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183 |
if ( regs.Contains( TArmRegisterType.EArmReg_PC ) ) |
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184 |
{ |
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185 |
ArmRegister regPC = regs[ TArmRegisterType.EArmReg_PC ]; |
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186 |
|
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187 |
StackOutputEntry entryPC = new StackOutputEntry( 0, regPC.Value ); |
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188 |
entryPC.IsRegisterBasedEntry = true; |
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189 |
entryPC.IsOutsideCurrentStackRange = true; |
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190 |
entryPC.AssociatedRegister = regPC.RegType; |
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191 |
EmitElement( entryPC ); |
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192 |
} |
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193 |
|
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194 |
// Even if they weren't added, we at least attempted to addd them |
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195 |
addedLRandPC = true; |
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196 |
} |
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197 |
|
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198 |
return addedLRandPC; |
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199 |
} |
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|
200 |
|
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201 |
private void EmitElement( StackOutputEntry aEntry ) |
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202 |
{ |
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203 |
// Flush entry |
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204 |
base.StackObserver.StackBuildingElementConstructed( this, aEntry ); |
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205 |
} |
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206 |
#endregion |
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207 |
|
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208 |
#region Data members |
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209 |
private int iDWordIndex = 0; |
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210 |
#endregion |
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211 |
} |
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212 |
} |