compiling assembly with Visual C++ Express 2010 64 Bit

How do I compile assembly code in a separate file?

If my function is of the type "void __fastcall foo(unsigned long long, unsigned long long, unsigned long long, unsigned long long&, unsigned long long&)", how do 开发者_运维知识库I implement this in my .asm file?

.code

foo PROC
            ; do stuff here
foo ENDP

end