4 | pseudosubroutines (leaf functions)
5 | ----------------------------------
6 | call a leaf subroutine - use a6 for the reutrn address
7 .macro pseudo_call addr
8 move.l #0f, %a6 | a6 will hold the return address
13 | return from a leaf subroutine
15 jmp (%a6) | a6 better not have changed!