8051 memory during function calls and returns

Hello,

I was hoping someone could tell me how the memory works during functions call out of main.

In regular C and C++, after functions return, the memory is free again.

How does it work in the 8051 using C?

For example:

void myFunc()
{ int VAR = 1;
}

When the function gets called does VAR use data memory or code memory? When it returns, is the memory that VAR used, free to be used again?

Thanks.