On a near call, the stack pointer is 2 less than its original value. On a far call, it is 4 less.

A hay stack

no

A rack of ribs

Arguments are passed to functions via the thread's function call stack. Every thread has its own call stack, which is a small region of contiguous, fixed-size memory that extends downwards into lower addresses. The stack is allocated when the thread is instantiated and deallocated when the thread terminates thus there is minimal cost in using the stack. Data is pushed and popped from the stack while a stack pointer keeps track of the top of the stack (the lowest unused address).