ack/mach/z8000/libem/xset.s
1985-01-08 11:48:43 +00:00

23 lines
302 B
ArmAsm

.define xset
!bitnr in R1
!size (bytes) in R0
xset:
popl saveret, *RR14
sra R0
ld R2, R0
1: push *RR14, $0
djnz R0, 1b
div RR0, $020 !R0: bitnr, R1: wordnr
cp R1, R2
jr UGE, 2f
ldk R2, $0
set R2, R0
sla R1
ld RR14(R1), R2
3: pushl *RR14, saveret
ret
2: push *RR14, $ESET
calr trp
jr 3b