/// <inheritdoc />
public override SymbolicProgramState <CilInstruction> GetInitialState(long entrypointAddress)
{
var result = base.GetInitialState(entrypointAddress);
foreach (var eh in _architecture.MethodBody.ExceptionHandlers)
{
if (eh.HandlerType == CilExceptionHandlerType.Fault ||
eh.HandlerType == CilExceptionHandlerType.Finally)
{
continue;
}
var exceptionSource = default(ExternalDataSourceNode <CilInstruction>);
if (eh.HandlerStart.Offset == entrypointAddress)
{
exceptionSource = new ExternalDataSourceNode <CilInstruction>(
-(long)eh.HandlerStart.Offset,
$"HandlerException_{eh.HandlerStart.Offset:X4}");
}
else if (eh.FilterStart != null && eh.FilterStart.Offset == entrypointAddress)
{
exceptionSource = new ExternalDataSourceNode <CilInstruction>(
-(long)eh.FilterStart.Offset,
$"FilterException_{eh.FilterStart.Offset:X4}");
}
if (exceptionSource is {})
public void EntryPointPopWithSingleItemOnStackShouldAddDependencyToExternalSource()
{
var instructions = new[]
{
DummyInstruction.Pop(0, 1),
DummyInstruction.Ret(1),
};
var dfgBuilder = new DummyTransitionResolver();
var argument = new ExternalDataSourceNode <DummyInstruction>(-1, "Argument 1");
dfgBuilder.DataFlowGraph.Nodes.Add(argument);
dfgBuilder.InitialState = new SymbolicProgramState <DummyInstruction>();
dfgBuilder.InitialState.Stack.Push(new SymbolicValue <DummyInstruction>(argument));
var cfgBuilder = new SymbolicFlowGraphBuilder <DummyInstruction>(
DummyArchitecture.Instance,
instructions,
dfgBuilder);
cfgBuilder.ConstructFlowGraph(0);
var dfg = dfgBuilder.DataFlowGraph;
Assert.Equal(new[] { argument }, dfg.Nodes[0].StackDependencies[0].GetNodes());
}
/// <inheritdoc />
public override SymbolicProgramState <Instruction> GetInitialState(long entrypointAddress)
{
var result = base.GetInitialState(entrypointAddress);
for (int i = 0; i < _architecture.MethodBody.ExceptionHandlers.Count; i++)
{
var handler = _architecture.MethodBody.ExceptionHandlers[i];
if (handler.HandlerType == ExceptionHandlerType.Fault ||
handler.HandlerType == ExceptionHandlerType.Finally)
{
continue;
}
var exceptionSource = default(ExternalDataSourceNode <Instruction>);
if (handler.HandlerStart.Offset == entrypointAddress)
{
exceptionSource = new ExternalDataSourceNode <Instruction>(
-handler.HandlerStart.Offset,
$"HandlerException_{handler.HandlerStart.Offset:X4}");
}
else if (handler.FilterStart != null && handler.FilterStart.Offset == entrypointAddress)
{
exceptionSource = new ExternalDataSourceNode <Instruction>(
-handler.FilterStart.Offset,
$"FilterException_{handler.FilterStart.Offset:X4}");
}
if (exceptionSource is { })
internal AstVariable GetExternalVariable(ExternalDataSourceNode <TInstruction> external)
{
if (ExternalSources.TryGetValue(external, out var variable))
{
return(variable);
}
variable = new AstVariable(external.Name);
ExternalSources.Add(external, variable);
return(variable);
}