"outw() -- for handling word."

Why would you want it?

PC compilers (used to) have it because the x86 architecture has a separate IO space.
So the so-called outportx() "functions" aren't really functions at all - just directive to get the compiler to use port IO instructions instead of memory accesses.

On the 8052, everything is memory-mapped, so there is no need for any special constructs to access port IO.