SMULL Signed multiply long This instruction multiplies two 32-bit register values, and writes the result to the 64-bit destination register. SMADDL 1 0 0 1 1 0 1 1 0 0 1 0 1 1 1 1 1 SMULL <Xd>, <Wn>, <Wm> SMADDL <Xd>, <Wn>, <Wm>, XZR Unconditionally <Xd> Is the 64-bit name of the general-purpose destination register, encoded in the "Rd" field. <Wn> Is the 32-bit name of the first general-purpose source register holding the multiplicand, encoded in the "Rn" field. <Wm> Is the 32-bit name of the second general-purpose source register holding the multiplier, encoded in the "Rm" field. 2026-03-12 12:23:09 2025-09_rel_asl1