@ stdcall FlsAlloc(ptr) kernelbase.FlsAlloc
@ stdcall FlsFree(long) kernelbase.FlsFree
@ stdcall FlsGetValue(long) kernelbase.FlsGetValue
@ stdcall FlsSetValue(long ptr) kernelbase.FlsSetValue
@ stdcall IsThreadAFiber() kernelbase.IsThreadAFiber