protected override void PerformOperation()
{
// Get the source data we need to reconstruct and signal we're about to start
StackSourceData sourceData = base.SourceData;
// Get the output data sink
StackOutputData outputData = base.OutputData;
outputData.Clear();
outputData.AlgorithmName = Name;
// Get the address range of the stack pointer data
AddressRange pointerRange = base.Engine.AddressInfo.StackPointerRange;
AddressRange pointerRangeExtended = base.Engine.AddressInfo.StackPointerRangeWithExtensionArea;
// Indicates if we added LR and PC to the call stack
bool addedLRandPC = false;
// Get registers
ArmRegisterCollection regs = base.Engine.Registers;
foreach (DataBufferUint sourceEntry in sourceData.GetUintEnumerator())
{
// Check if it is within the stack domain, taking into account
// our extended range
if (pointerRangeExtended.Contains(sourceEntry.Address))
{
StackOutputEntry outputEntry = new StackOutputEntry(sourceEntry.Address, sourceEntry.Uint, base.DebugEngineView);
// Is it the element tht corresponds to the current value of SP?
bool isCurrentSPEntry = (outputEntry.AddressRange.Contains(base.Engine.AddressInfo.Pointer));
outputEntry.IsCurrentStackPointerEntry = isCurrentSPEntry;
// Is it within the pure 'stack pointer' address range?
bool outsidePureStackPointerRange = !pointerRange.Contains(sourceEntry.Address);
outputEntry.IsOutsideCurrentStackRange = outsidePureStackPointerRange;
// These are never accurate, but neither are they ghosts
outputEntry.IsAccurate = false;
outputEntry.IsGhost = false;
// Save entry
EmitElement(outputEntry);
// If we're inside the stack address range, then poke in the PC and LR values
if (isCurrentSPEntry)
{
System.Diagnostics.Debug.Assert(!addedLRandPC);
addedLRandPC = AddLRAndPC();
}
}
else
{
// Nope, ignore it...
}
NotifyEvent(TEvent.EReadingProgress);
++iDWordIndex;
}
// If the stack overflowed, then SP might be outside of the stack range. Therefore
// LR and PC will not be added yet.
if (!addedLRandPC)
{
AddLRAndPC();
}
}
private void CreateStackOutput()
{
// Get the source data we need to reconstruct and signal we're about to start
StackSourceData sourceData = base.SourceData;
// Get the output data sink
StackOutputData outputData = base.OutputData;
outputData.Clear();
outputData.AlgorithmName = Name;
// Get the address range of the stack pointer data
AddressRange pointerRange = base.Engine.AddressInfo.StackPointerRange;
AddressRange pointerRangeExtended = base.Engine.AddressInfo.StackPointerRangeWithExtensionArea;
foreach (DataBufferUint sourceEntry in sourceData.GetUintEnumerator())
{
// Check if it is within the stack domain, taking into account
// our extended range
if (pointerRangeExtended.Contains(sourceEntry.Address))
{
StackOutputEntry outputEntry = new StackOutputEntry(sourceEntry.Address, sourceEntry.Uint, base.DebugEngineView);
// Is it the element that corresponds to the current value of SP?
bool isCurrentSPEntry = (outputEntry.AddressRange.Contains(base.Engine.AddressInfo.Pointer));
// Is it within the pure 'stack pointer' address range?
bool outsidePureStackPointerRange = !pointerRange.Contains(sourceEntry.Address);
outputEntry.IsOutsideCurrentStackRange = outsidePureStackPointerRange;
// Is it a ghost?
if (outputEntry.Symbol != null)
{
ArmStackFrame realStackFrame = FrameByStackAddress(sourceEntry.Address);
outputEntry.IsAccurate = (realStackFrame != null);
outputEntry.IsGhost = (realStackFrame == null);
}
// Save entry
EmitElement(outputEntry);
// If we're inside the stack address range, then poke in the PC and LR values
if (isCurrentSPEntry)
{
outputEntry.IsCurrentStackPointerEntry = true;
// Working bottom up, so LR should go on the stack first
ArmStackFrame stackFrameLR = FrameByRegisterType(TArmRegisterType.EArmReg_LR);
if (stackFrameLR != null)
{
StackOutputEntry entryLR = new StackOutputEntry(0, stackFrameLR.Data, base.DebugEngineView);
entryLR.IsRegisterBasedEntry = true;
entryLR.IsOutsideCurrentStackRange = true;
entryLR.AssociatedRegister = stackFrameLR.AssociatedRegister;
EmitElement(entryLR);
}
// Then the PC...
ArmStackFrame stackFramePC = FrameByRegisterType(TArmRegisterType.EArmReg_PC);
if (stackFramePC != null)
{
StackOutputEntry entryPC = new StackOutputEntry(0, stackFramePC.Data, base.DebugEngineView);
entryPC.IsRegisterBasedEntry = true;
entryPC.IsOutsideCurrentStackRange = true;
entryPC.AssociatedRegister = stackFramePC.AssociatedRegister;
EmitElement(entryPC);
}
}
}
else
{
// Nope, ignore it...
}
NotifyEvent(TEvent.EReadingProgress);
++iDWordIndex;
}
}
