@ stub RtlCopyExtendedContext
@ stdcall RtlGetEnabledExtendedFeatures(int64) ntdll.RtlGetEnabledExtendedFeatures
@ stdcall RtlGetExtendedContextLength(long ptr) ntdll.RtlGetExtendedContextLength
@ stub RtlGetExtendedFeaturesMask
@ stdcall RtlInitializeExtendedContext(ptr long ptr) ntdll.RtlInitializeExtendedContext
@ stdcall RtlLocateExtendedFeature(ptr long ptr) ntdll.RtlLocateExtendedFeature
@ stdcall RtlLocateLegacyContext(ptr ptr) ntdll.RtlLocateLegacyContext
@ stub RtlSetExtendedFeaturesMask