How to get list of functions inside a DLL (managed and unmanaged)?

So I play around a DLL (UnityEditor.dll) I wanna to get a list of all functions inside of this managed DLL which are unmanaged (dll is probably composed from a native C++ (with statically compiled libaries if such were used) core and managed C++ wrapper all wrapped into one dll.) I want to get a list of all unmanaged functions inside of that Dll to for example create my own managed\unmanaged wrapper?