ARM Assembly

Question

return value = b + d / 8

HOW CAN I WRITE THIS

Answer 1

LDR R4,=0x20000001 ; (0x20000001) = (2^32 / 8)+1 calculated because there is no division instruction

MULS R0,R3,R4 ; calculates the value of d/8

ADD R0,R0,R1 ; calculates the value of b+d/8

THIS IS MY CODE BUT i GET THIS ERROR

"Lab7.s", line 33: Error: A1883E: Destination and second source register must be same

Answer 2

33 00000020 MULS R0,R3,R4 ; calculates the value of d/8