ISS_MSR_OP1_SHIFT
#define ISS_MSR_OP1_MASK (0x7 << ISS_MSR_OP1_SHIFT)
#define ISS_MSR_OP1(x) (((x) & ISS_MSR_OP1_MASK) >> ISS_MSR_OP1_SHIFT)
((op1) << ISS_MSR_OP1_SHIFT) | \
((_reg ## _op1) << ISS_MSR_OP1_SHIFT) | \
((_reg ## _op1) << ISS_MSR_OP1_SHIFT) | \
(0 << ISS_MSR_OP1_SHIFT) |