68  * The segment list is represented as an AVL tree.
73  * address space structure as shown below:
107 struct as {  struct
109 	uchar_t  a_flags;	/* as attributes */  argument
114 	caddr_t	a_userlimit;	/* highest allowable address in this as */  argument
138 #define	AS_ISPGLCK(as)		((as)->a_flags & AS_PAGLCK)  argument
139 #define	AS_ISCLAIMGAP(as)	((as)->a_flags & AS_CLAIMGAP)  argument
140 #define	AS_ISUNMAPWAIT(as)	((as)->a_flags & AS_UNMAPWAIT)  argument
141 #define	AS_ISNOUNMAPWAIT(as)	((as)->a_flags & AS_NOUNMAPWAIT)  argument
143 #define	AS_SETPGLCK(as)		((as)->a_flags |= AS_PAGLCK)  argument
144 #define	AS_SETCLAIMGAP(as)	((as)->a_flags |= AS_CLAIMGAP)  argument
145 #define	AS_SETUNMAPWAIT(as)	((as)->a_flags |= AS_UNMAPWAIT)  argument
146 #define	AS_SETNOUNMAPWAIT(as)	((as)->a_flags |= AS_NOUNMAPWAIT)  argument
148 #define	AS_CLRPGLCK(as)		((as)->a_flags &= ~AS_PAGLCK)  argument
149 #define	AS_CLRCLAIMGAP(as)	((as)->a_flags &= ~AS_CLAIMGAP)  argument
150 #define	AS_CLRUNMAPWAIT(as)	((as)->a_flags &= ~AS_UNMAPWAIT)  argument
151 #define	AS_CLRNOUNMAPWAIT(as)	((as)->a_flags &= ~AS_NOUNMAPWAIT)  argument
153 #define	AS_TYPE_64BIT(as)	\  argument
154 	    (((as)->a_userlimit > (caddr_t)UINT32_MAX) ? 1 : 0)
177  * as as_free, as_umap, and as_setprot will block indefinitely until the
184 typedef void (*callback_func_t)(struct as *, void *, uint_t);
223 extern struct as kas;		/* kernel's address space */
227  * whenever we acquire the address space lock as reader to assure that it can
231  * acquiring those same locks to be called with the address space lock held as
238 #define	AS_LOCK_ENTER(as, type)		rw_enter(&(as)->a_lock, \  argument
240 #define	AS_LOCK_EXIT(as)		rw_exit(&(as)->a_lock)  argument
241 #define	AS_LOCK_DESTROY(as)		rw_destroy(&(as)->a_lock)  argument
242 #define	AS_LOCK_TRYENTER(as, type)	rw_tryenter(&(as)->a_lock, \  argument
248 #define	AS_LOCK_HELD(as)		RW_LOCK_HELD(&(as)->a_lock)  argument
249 #define	AS_READ_HELD(as)		RW_READ_HELD(&(as)->a_lock)  argument
250 #define	AS_WRITE_HELD(as)		RW_WRITE_HELD(&(as)->a_lock)  argument
255 #define	AS_SEGFIRST(as)		avl_first(&(as)->a_segtree)  argument
256 #define	AS_SEGNEXT(as, seg)	AVL_NEXT(&(as)->a_segtree, (seg))  argument
257 #define	AS_SEGPREV(as, seg)	AVL_PREV(&(as)->a_segtree, (seg))  argument
262 void	as_avlinit(struct as *);
263 struct	seg *as_segat(struct as *as, caddr_t addr);
264 void	as_rangelock(struct as *as);
265 void	as_rangeunlock(struct as *as);
266 struct	as *as_alloc();
267 void	as_free(struct as *as);
268 int	as_dup(struct as *as, struct proc *forkedproc);
269 struct	seg *as_findseg(struct as *as, caddr_t addr, int tail);
270 int	as_addseg(struct as *as, struct seg *newseg);
271 struct	seg *as_removeseg(struct as *as, struct seg *seg);
272 faultcode_t as_fault(struct hat *hat, struct as *as, caddr_t addr, size_t size,
274 faultcode_t as_faulta(struct as *as, caddr_t addr, size_t size);
275 int	as_setprot(struct as *as, caddr_t addr, size_t size, uint_t prot);
276 int	as_checkprot(struct as *as, caddr_t addr, size_t size, uint_t prot);
277 int	as_unmap(struct as *as, caddr_t addr, size_t size);
278 int	as_map(struct as *as, caddr_t addr, size_t size, segcreate_func_t crfp,
280 int as_map_locked(struct as *as, caddr_t addr, size_t size,
282 void	as_purge(struct as *as);
283 int	as_gap(struct as *as, size_t minlen, caddr_t *basep, size_t *lenp,
285 int	as_gap_aligned(struct as *as, size_t minlen, caddr_t *basep,
289 int	as_memory(struct as *as, caddr_t *basep, size_t *lenp);
290 size_t	as_swapout(struct as *as);
291 int	as_incore(struct as *as, caddr_t addr, size_t size, char *vec,
293 int	as_ctl(struct as *as, caddr_t addr, size_t size, int func, int attr,
295 int	as_pagelock(struct as *as, struct page ***ppp, caddr_t addr,
297 void	as_pageunlock(struct as *as, struct page **pp, caddr_t addr,
299 int	as_setpagesize(struct as *as, caddr_t addr, size_t size, uint_t szc,
301 int	as_set_default_lpsize(struct as *as, caddr_t addr, size_t size);
302 void	as_setwatch(struct as *as);
303 void	as_clearwatch(struct as *as);
304 int	as_getmemid(struct as *, caddr_t, memid_t *);
306 int	as_add_callback(struct as *, void (*)(), void *, uint_t,
308 uint_t	as_delete_callback(struct as *, void *);