/ / char *copy(out, in, nbytes) / Returns just past the end of the output. / .globl copy copy: jsr r0,__csav / Linkage. mov 12(r5),r0 / r0 = out mov 14(r5),r1 / r1 = in mov 16(r5),r2 / r2 = nbytes 0: dec r2 / Done ? bmi 0f / Br if yes. movb (r1)+,(r0)+ / Move a byte and ... br 0b / Go back for more. 0: jmp __cret / Done.