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.data 32
fmt:
.c "nfibs(%d) = %d\n"
.code
jmpi main
name rfibs
rfibs:
prolog
arg $in
getarg %r0 $in /* R0 = N */
beqi out %r0 0
movr %v0 %r0 /* V0 = R0 */
movi %r0 1
blei_u out %v0 2
subi %v1 %v0 1 /* V1 = N-1 */
subi %v2 %v0 2 /* V1 = N-2 */
prepare
pushargr %v1
finishi rfibs
retval %v1 /* V1 = rfibs(N-1) */
prepare
pushargr %v2
finishi rfibs
retval %r0 /* R0 = rfibs(N-2) */
addr %r0 %r0 %v1
out:
retr %r0
epilog
name main
main:
prolog
prepare
pushargi 32
finishi rfibs
retval %v0
prepare
pushargi fmt
ellipsis
pushargi 32
pushargr %v0
finishi @printf
ret
epilog
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