public void NewStackFrame_IsUsedToCalculateAddresses_InANewStackFrame_ForACaller()
{
// new stackframe beginning at address 20, with 3 arguments
var offset = new NewStackFrame(20, 3);
Assert.That(offset.ReturnValue, Is.EqualTo(20));
Assert.That(offset.Argn(0), Is.EqualTo(21));
Assert.That(offset.Argn(1), Is.EqualTo(22));
Assert.That(offset.Argn(2), Is.EqualTo(23));
Assert.That(() => offset.Argn(3), Throws.Exception.InstanceOf <ArgumentOutOfRangeException>());
Assert.That(offset.ReturnAddress, Is.EqualTo(24));
Assert.That(offset.Register0, Is.EqualTo(25));
Assert.That(offset.Register1, Is.EqualTo(26));
Assert.That(offset.Register2, Is.EqualTo(27));
Assert.That(offset.Register3, Is.EqualTo(28));
Assert.That(offset.Register4, Is.EqualTo(29));
Assert.That(offset.Register5, Is.EqualTo(30));
Assert.That(offset.Register6, Is.EqualTo(31));
Assert.That(offset.NewStackPointer, Is.EqualTo(32));
}
public static string Param(ref int lineNumber, StackFrame stackFrame, NewStackFrame newStackFrame, string variable, int argNum)
{
return($@"{lineNumber++}: LD 2, {stackFrame.Address(variable)}(6) ; param{argNum} := {variable}
{lineNumber++}: ST 2, {newStackFrame.Argn(argNum)}(6)
");
}
