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{

  link_t buddy_link;        /**< link to the next free block inside one  order */

  count_t refcount;         /**< tracking of shared frames  */

  u32_t buddy_order;        /**< buddy system block order */

  void *parent;             /**< If allocated by slab, this points there */

} frame_t;

  SPINLOCK_DECLARE(lock);   /**< this lock protects everything below */

  pfn_t base;               /**< frame_no of the first frame in the frames array */

  count_t count;            /**< Size of zone */

  count_t free_count;       /**< number of free frame_t structures */

  count_t busy_count;       /**< number of busy frame_t structures */

  link_t order[21];

} zone_t;

{

    link_t  link;

    link_t  adj;

    addr_t  base;

    size_t  size;

    void   *parent;

    u32_t   state;

}md_t;

#define PG_WRITE      2

#define PG_USER       4

#define PG_UW         7

#define FRAME_WIDTH  12

# define KA2PA(x) (((addr_t) (x)) - OS_BASE)

{

	if (!size)

		return 0;

  return (count_t) ((size - 1) >> FRAME_WIDTH) + 1;

}

{

  return (addr_t) (frame << FRAME_WIDTH);

}

{

	return (pfn_t) (addr >> FRAME_WIDTH);

};

void  __fastcall frame_set_parent(pfn_t pfn, void *data);

void   __fastcall core_free(addr_t frame);

void  __fastcall __export mem_free(void *mem) asm ("MemFree");