Here is one way this kind of thing can be fixed if the code needs a long loop.

        ......
        mov  R0,#13
  loop:
        ...
        ...
        ...
        sjmp   skip
  backref:
        ajmp   loop
  skip:
        ....
        ....
        ....
        dec   R0
        cjne R0,#3,backref
        ....

Its a kludege but it should give you the idea.

Michael Karas