ADVANCE
#define ADVANCE(x, n) \
#undef ADVANCE
#define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))
#define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))
#define ADVANCE(n) \
#define ADVANCE (n = tf->tf_npc, tf->tf_pc = n, tf->tf_npc = n + 4)
#undef ADVANCE
#define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))
#define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))
#define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))
#define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))
#define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))