ARM Assembly Language: Fundamentals and Techniques, Second Edition( by William Hohl, Christopher Hinds)

4. Write shift routines that allow you to arithmetically shift 64-bit values that are stored in two registers. The routines should shift an operand left or right by one bit. 4. Write shift routines that allow you to arithmetically shift 64-bit values that are stored in two registers. The routines should shift an operand left or right by one bit