.globl succ .globl iget .globl push push: jsr pc,iget mov (r0),r2 mov r2,r1 1: mov r1,-(sp) jsr pc,iget mov (sp)+,r1 mov r0,-(sp) mov (r0),-(sp) dec r2 bgt 1b mov r1,-(sp) jsr pc,succ / preserve c bit from here on mov (sp)+,r2 1: mov (sp)+,*(sp)+ dec r2 bgt 1b rts pc /pass sret or fret back to invoking rule