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- .globl length
- .globl position
- .globl w, r, a, l
- /
- /
- / routine to return the length of a string
- /
- / mov ...,r1
- / jsr pc,length
- / mov r0,...
- /
- length:
- mov w(r1),r0
- sub a(r1),r0
- rts pc
- /
- /
- / routine to return the read pointer position
- /
- / mov ...,r1
- / jsr pc,position
- / mov r0,...
- /
- position:
- mov r(r1),r0
- sub a(r1),r0
- rts pc
-