Op_BC
{ "b", 0xfc000000, 0x40000000, Op_BC | Op_BD | Op_AA | Op_LK }, /* bc */
{ "b", 0xfc0007fe, 0x4c000020, Op_BC | Op_LK }, /* bclr */
{ "b", 0xfc0007fe, 0x4c000420, Op_BC | Op_LK }, /* bcctr */
if (func & Op_BC) {
func &= ~Op_BC;