GETARG_6NUP
#define GETARG_6NUP(i, regset) (((ulong_t *)regset->lr_rego6)[23+i-6])
#define GETARG_6NUP(i, regset) (((ulong_t *)regset->lr_rsp)[i+1-6])
#define GETARG_6NUP(i, regset) (((ulong_t *)regset->lr_esp)[i+1])