Oh, good, it must be Friday, (Wait, what's that? It's not? Drat.) I'd probably call the set of instructions "linkage" instructions, or "program linkage" instructions.
When describing the logic flow to someone, I tend to say "call a subroutine" or "link to a subroutine", but I sometimes devolve to "branch and link to a subroutine" or "branch and save to a subroutine" for the first 6 instructions; I'd probably roll my eyes if someone tried quibble over save vs. link, branch vs. jump, etc. For BASSM specifically, I'd say "BASSM to the routine". [Get ready for the next question: Do you pronounce "BASSM" as "bass-em" or "bazz-em"?] ;-) - mb
