public override EmulationResult Emulate(Context ctx)
{
if (!(ctx.Instruction.Operand is IMethod iMethod))
{
throw new InvalidILException(ctx.Instruction.ToString());
}
var method = (iMethod is MethodDef methodDef) ? methodDef : iMethod.ResolveMethodDef();
if ((method.IsPinvokeImpl || !method.HasBody) &&
!(ctx.Emulator.DynamicContext is null) &&
ctx.Emulator.DynamicContext.AllowInvocation)
{
var methodInfo = ctx.Emulator.DynamicContext.LookupMember <MethodInfo>(iMethod.MDToken.ToInt32());
var parameters = ctx.Stack.PopObjects(methodInfo.GetParameters().Length).Reverse().ToArray();
var thisPtr = method.IsStatic ? null : ((ObjectValue)ctx.Stack.Pop()).Value;
object returnValue = methodInfo.Invoke(thisPtr, parameters);
if (method.ReturnType.ElementType != ElementType.Void)
{
ctx.Stack.Push(Value.FromObject(returnValue));
}
return(new NormalResult());
}
var emulator = new CILEmulator(method, ctx.Emulator.DynamicContext, ctx.Stack.Pop(method.Parameters.Count).Reverse());
emulator.Emulate();
if (method.ReturnType.ElementType != ElementType.Void)
{
ctx.Stack.Push(emulator.ValueStack.Pop());
}
return(new NormalResult());
}
public override EmulationResult Emulate(Context ctx)
{
if (!(ctx.Instruction.Operand is IMethod iMethod))
{
throw new InvalidILException(ctx.Instruction.ToString());
}
var method = iMethod is MethodDef methodDef ? methodDef : iMethod.ResolveMethodDef();
var emulator = new CILEmulator(method, ctx.Stack.Pop(method.Parameters.Count).Reverse());
ctx.Stack.Clear();
emulator.Emulate();
return(new ReturnResult());
}
public void CalculateSize()
{
var assembly = typeof(SizeofTest).Assembly;
var module = ModuleDefMD.Load(assembly.Location);
var dynamicContext = new DynamicContext(assembly);
var cilEmulator = new CILEmulator(module.FindNormal("DNEmulator.Tests.Misc.SizeofTest").FindMethod("TestMethod"),
dynamicContext);
cilEmulator.Emulate();
var value = cilEmulator.ValueStack.Pop();
Assert.AreEqual(typeof(I4Value), value.GetType());
var emulatedSize = (I4Value)value;
int size = TestMethod();
Assert.AreEqual(size, emulatedSize.Value);
}
public void IsDateTime()
{
var assembly = typeof(Isinst).Assembly;
var module = ModuleDefMD.Load(assembly.Location);
Resolver.Resolve(module);
var dynamicContext = new DynamicContext(assembly);
var cilEmulator = new CILEmulator(module.FindNormal("DNEmulator.Tests.Conversions.Isinst").FindMethod("TestMethod"),
dynamicContext);
cilEmulator.Emulate();
var value = cilEmulator.ValueStack.Pop();
Assert.AreEqual(typeof(I4Value), value.GetType());
var emulatedIsDateTime = (I4Value)value;
bool isDateTime = TestMethod();
Assert.AreEqual(isDateTime, emulatedIsDateTime.Value != 0);
}
public override EmulationResult Emulate(Context ctx)
{
if (!(ctx.Instruction.Operand is IMethod iMethod))
{
throw new InvalidILException(ctx.Instruction.ToString());
}
var method = (iMethod is MethodDef methodDef) ? methodDef : iMethod.ResolveMethodDef();
var emulator = new CILEmulator(method, ctx.Stack.Pop(method.Parameters.Count).Reverse());
emulator.Emulate();
if (method.ReturnType.ElementType != ElementType.Void)
{
ctx.Stack.Push(emulator.ValueStack.Pop());
}
return(new NormalResult());
}
public void ToStringTest()
{
var assembly = typeof(CallvirtTest).Assembly;
var module = ModuleDefMD.Load(assembly.Location);
var dynamicContext = new DynamicContext(assembly)
{
AllowInvocation = true,
};
var cilEmulator = new CILEmulator(module.FindNormal("DNEmulator.Tests.Invocation.CallvirtTest").FindMethod("TestMethod"),
dynamicContext);
cilEmulator.Emulate();
var value = cilEmulator.ValueStack.Pop();
Assert.AreEqual(typeof(ObjectValue), value.GetType());
var emulatedToString = (ObjectValue)value;
var toString = TestMethod();
Assert.AreEqual(toString, (string)emulatedToString.Value);
}
