#define PACK_ENTRY(67108864&) (control OR ((tag-tagbase) << 16L) OR PK_CALCOFFSET(type, field))
#define PACK_BYTEBIT(67108864&) (control OR ((tag-tagbase) << 16L) OR PK_CALCOFFSET(type, field) OR (PK_BITNUM(flags) << 13L))
#define PACK_WORDBIT(67108864&) (control OR ((tag-tagbase) << 16L) OR (PK_CALCOFFSET(type, field)+PK_WORDOFFSET(flags)) OR ((PK_BITNUM(flags)&7) << 13L))
#define PACK_LONGBIT(67108864) (control OR ((tag-tagbase) << 16L) OR (PK_CALCOFFSET(type, field)+PK_LONGOFFSET(flags)) OR ((PK_BITNUM(flags)&7) << 13L))