IL Hooks

TODO

• reading IL code from ILspy
• explanation of matching, how to match
• list common OpCodes and what they do
• Explain GotoNext(); GotoNext(params bool predicate); TryGoToNext(params bool predicate);
• Explain Emit, EmitDelegate
• Explain Remove();
• Explain common patterns for replacing
  • cursor.EmitDelegate<Func<float,float>>
  • cursor.Remove(); cursor.Emit(OpCodes, val)/ cursor.EmitDelegate(() => val)
  • cursor.Next.Operand = newval
• understand common errors such as
  • invalid stack
    • when stack has a value thats not used
    • when stack has a value thats not expected (int instead of string)
    • when stack has missing value
  • invalid label
    • when remove is used to remove an instruction that is used to transfer control (in if statement)
• While vs If in matching
• Ienumarator IL hooking and how to do it
• • how to run your code mid function (will probably not be able to change value of parameters of functions tho)