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      1 /*	$NetBSD: stalloc.h,v 1.7 2023/01/06 10:28:27 tsutsui Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1994 Christian E. Hopps (allocator stuff)
      5  * Copyright (c) 1995 Leo Weppelman (Atari modifications)
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by the University of
     18  *	California, Berkeley and its contributors.
     19  * 4. Neither the name of the University nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  */
     35 
     36 #ifndef _ATARI_STALLOC_H
     37 #define _ATARI_STALLOC_H
     38 /*
     39  * St-mem allocator stuff.
     40  */
     41 struct mem_node {
     42 	TAILQ_ENTRY(mem_node) link;
     43 	TAILQ_ENTRY(mem_node) free_link;
     44 	u_long size;		/* size of memory following node. */
     45 	u_char type;		/* free, used */
     46 };
     47 #define MNODE_FREE 0
     48 #define MNODE_USED 1
     49 
     50 #define ST_BLOCKSIZE	(sizeof(long))
     51 #define ST_BLOCKMASK	(~(ST_BLOCKSIZE - 1))
     52 #define MNODES_MEM(mn)	((u_char *)(&mn[1]))
     53 
     54 void init_stmem(void);
     55 void *alloc_stmem(u_long, void **);
     56 void free_stmem(void *);
     57 
     58 #endif /* _ATARI_STALLOC_H */
     59