#ifndef __NVIF_UNPACK_H__

#define __NVIF_UNPACK_H__

#define nvif_unvers(r,d,s,m) ({                                                \

	void **_data = (d); __u32 *_size = (s); int _ret = (r);                \

	if (_ret == -ENOSYS && *_size == sizeof(m)) {                          \

		*_data = NULL;                                                 \

		*_size = _ret = 0;                                             \

	}                                                                      \

	_ret;                                                                  \

})

#define nvif_unpack(r,d,s,m,vl,vh,x) ({                                        \

	void **_data = (d); __u32 *_size = (s);                                \

	int _ret = (r), _vl = (vl), _vh = (vh);                                \

	if (_ret == -ENOSYS && *_size >= sizeof(m) &&                          \

	    (m).version >= _vl && (m).version <= _vh) {                        \

		*_data = (__u8 *)*_data + sizeof(m);                           \

		*_size = *_size - sizeof(m);                                   \

		if (_ret = 0, !(x)) {                                          \

			_ret = *_size ? -E2BIG : 0;                            \

			*_data = NULL;                                         \

			*_size = 0;                                            \

		}                                                              \

	}                                                                      \

	_ret;                                                                  \

})

#endif