RAX1 Rotate and exclusive-OR This instruction rotates each 64-bit element of the 128-bit vector in a source SIMD&FP register left by 1, performs a bitwise exclusive-OR of the resulting 128-bit vector and the vector in another source SIMD&FP register, and writes the result to the destination SIMD&FP register. If PSTATE.DIT is 1: The execution time of this instruction is independent of: The values of the data supplied in any of its registers. The values of the NZCV flags. The response of this instruction to asynchronous exceptions does not vary based on: The values of the data supplied in any of its registers. The values of the NZCV flags. 1 1 0 0 1 1 1 0 0 1 1 1 0 0 0 1 1 RAX1 <Vd>.2D, <Vn>.2D, <Vm>.2D if !IsFeatureImplemented(FEAT_SHA3) then UNDEFINED; constant integer d = UInt(Rd); constant integer n = UInt(Rn); constant integer m = UInt(Rm); <Vd> Is the name of the SIMD&FP destination register, encoded in the "Rd" field. <Vn> Is the name of the first SIMD&FP source register, encoded in the "Rn" field. <Vm> Is the name of the second SIMD&FP source register, encoded in the "Rm" field. AArch64.CheckFPAdvSIMDEnabled(); constant bits(128) Vm = V[m, 128]; constant bits(128) Vn = V[n, 128]; V[d, 128] = Vn EOR (ROL(Vm<127:64>, 1):ROL(Vm<63:0>, 1));