.::Data Manipulation Instructions::.

Shift Instructions

SHL/SAL destination, count (identical instructions)

• destination shifted left count times with zeroes filling LO bits

SHR destination, count

• logical right shift; zero into HO bits

SAR destination, count

• arithmetic right shift; HO bit is maintained

SHLD/SHRD

• double precision shift

---

Rotate Instructions

RCR destination, count

• rotate right through carry
• shift right, rotate LO bit to carry, carry goes to HO bit

RCL destination, count

• rotate left through carry
• shift left, rotate HO bit to carry, carry goes to LO bit

ROR destination, count

• rotate right
• LO bit goes to HO bit and also to carry

ROL destination, count

• rotate left
• HO bit goes to LO bit and also to carry