crm_op2 := (x >> 5) & (1<<7 - 1)
		return Imm_hint(crm_op2)

	case arg_immediate_0_15_CRm:
		crm := (x >> 8) & (1<<4 - 1)
		return Imm{crm, false}

	case arg_immediate_0_15_nzcv:
		nzcv := x & (1<<4 - 1)
		return Imm{nzcv, false}

	case arg_immediate_0_31_imm5:
		imm5 := (x >> 16) & (1<<5 - 1)
		return Imm{imm5, false}

	case arg_immediate_0_31_immr:
		immr := (x >> 16) & (1<<6 - 1)
		if immr > 31 {

	MRS	MVFR0_EL1, R29                     // 1d0338d5
	MRS	MVFR1_EL1, R7                      // 270338d5
	MRS	MVFR2_EL1, R19                     // 530338d5
	MRS	NZCV, R11                          // 0b423bd5
	MSR	R10, NZCV                          // 0a421bd5
	MRS	OSDLR_EL1, R16                     // 901330d5
	MSR	R21, OSDLR_EL1                     // 951310d5
	MRS	OSDTRRX_EL1, R5                    // 450030d5