LSLS (register) Logical Shift Left, setting flags (register) shifts a register value left by a variable number of bits, shifting in zeros, writes the result to the destination register, and updates the condition flags based on the result. The variable number of bits is read from the bottom byte of a register MOV, MOVS (register-shifted register) It has encodings from the following instruction sets: A32 ( A1 ) and T32 ( T1 and T2 ) . != 1111 0 0 0 1 1 0 1 1 (0) (0) (0) (0) 0 0 0 1 LSLS{<c>}{<q>} {<Rd>,} <Rm>, <Rs> MOVS{<c>}{<q>} <Rd>, <Rm>, LSL <Rs> Unconditionally 0 1 0 0 0 0 0 0 1 0 LSLS{<q>} {<Rdm>,} <Rdm>, <Rs> MOVS{<q>} <Rdm>, <Rdm>, LSL <Rs> !InITBlock() 1 1 1 1 1 0 1 0 0 0 0 1 1 1 1 1 0 0 0 0 LSLS.W {<Rd>,} <Rm>, <Rs> LSLS{<c>}{<q>} {<Rd>,} <Rm>, <Rs> MOVS{<c>}{<q>} <Rd>, <Rm>, LSL <Rs> Unconditionally <c> See Standard assembler syntax fields. <q> See Standard assembler syntax fields. <Rdm> Is the first general-purpose source register and the destination register, encoded in the "Rdm" field. <Rd> Is the general-purpose destination register, encoded in the "Rd" field. <Rm> Is the first general-purpose source register, encoded in the "Rm" field. <Rs> Is the second general-purpose source register holding a shift amount in its bottom 8 bits, encoded in the "Rs" field.