private KnownStackLayout GetThreadLayout(IGlobalExpressionEvaluator evaluator)
{
if (!_StackLayout.HasValue)
{
var insns = evaluator.DisassembleMemory("SVC_ContextSave", 10) ?? new SimpleInstruction[0];
bool hasFP = false;
//This is a basic check to distinguish between known stack layouts. It is not trying to actually reconstruct the stack layout by analyzing the disassembly.
foreach (var insn in insns)
{
if (insn.Text?.ToLower()?.Contains("vstmdbeq") == true)
{
hasFP = true;
break;
}
if (insn.Text?.ToLower()?.StartsWith("bl") == true)
{
break;
}
}
_StackLayout = hasFP ? KnownStackLayout.IntegralWithOptionalFP : KnownStackLayout.IntegralOnly;
}
return(_StackLayout.Value);
}
