LSL (immediate) Logical shift left (immediate) This instruction shifts a register value left by an immediate number of bits, shifting in zeros, and writes the result to the destination register. UBFM 1 0 1 0 0 1 1 0 0 0 Z N N N N N LSL <Wd>, <Wn>, #<shift> UBFM <Wd>, <Wn>, #(-<shift> MOD 32), #(31-<shift>) UInt(imms) + 1 == UInt(immr) 1 1 N N N N N N LSL <Xd>, <Xn>, #<shift> UBFM <Xd>, <Xn>, #(-<shift> MOD 64), #(63-<shift>) UInt(imms) + 1 == UInt(immr) <Wd> Is the 32-bit name of the general-purpose destination register, encoded in the "Rd" field. <Wn> Is the 32-bit name of the general-purpose source register, encoded in the "Rn" field. <shift> For the "32-bit" variant: is the shift amount, in the range 0 to 31. <shift> For the "64-bit" variant: is the shift amount, in the range 0 to 63. <Xd> Is the 64-bit name of the general-purpose destination register, encoded in the "Rd" field. <Xn> Is the 64-bit name of the general-purpose source register, encoded in the "Rn" field. 2026-03-26 20:27:25 2026-03_rel