Files
unix-v6/source/s3/dpadd.s
T
2018-01-27 22:35:41 +09:00

20 lines
211 B
ArmAsm

/ C library -- signed dp add
/ dpadd(l, i)
/ int l[2];
/ l =+ i;
.globl _dpadd
_dpadd:
mov r5,-(sp)
mov sp,r5
mov 4(r5),r0
tst 6(r5)
sxt r1
add r1,(r0)+
add 6(r5),(r0)
adc -(r0)
mov (sp)+,r5
rts pc