AR_KEYTABLE_0
#define AR_KEYTABLE(n) (AR_KEYTABLE_0 + ((n)*32))
#define AR_KEYTABLE(n) (AR_KEYTABLE_0 + ((n)*32))
#define AR_KEYTABLE(_n) (AR_KEYTABLE_0 + ((_n)*32))
((r->reg - AR_KEYTABLE_0) >> 2) & 7,
(r->reg - AR_KEYTABLE_0) >> 5, r->reg);