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      1 /*	$NetBSD: bootinfo.c,v 1.1 2009/03/02 09:33:02 nonaka Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1997
      5  *	Matthias Drochner.  All rights reserved.
      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  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26  *
     27  */
     28 
     29 #include "boot.h"
     30 #include "bootinfo.h"
     31 
     32 struct btinfo *bootinfo;
     33 
     34 static int
     35 bi_find(int type)
     36 {
     37 	struct btinfo_common *btinfo;
     38 	int i;
     39 
     40 	for (i = 0; i < bootinfo->nentries; i++) {
     41 		btinfo = (struct btinfo_common *)(bootinfo->entry[i]);
     42 		if (btinfo->type == type) {
     43 			return i;
     44 		}
     45 	}
     46 	return -1;
     47 }
     48 
     49 void
     50 bi_add(struct btinfo_common *what, int type, int size)
     51 {
     52 	int idx;
     53 
     54 	what->len = size;
     55 	what->type = type;
     56 
     57 	if (bootinfo) {
     58 		idx = bi_find(type);
     59 		if (idx < 0) {
     60 			idx = bootinfo->nentries++;
     61 		}
     62 		bootinfo->entry[idx] = (u_long)what;
     63 	}
     64 }
     65 
     66 void
     67 bi_del(int type)
     68 {
     69 	int idx;
     70 	int i;
     71 
     72 	if (bootinfo) {
     73 		idx = bi_find(type);
     74 		if (idx >= 0) {
     75 			for (i = idx + 1; i < bootinfo->nentries; i++) {
     76 				bootinfo->entry[i - 1] = bootinfo->entry[i];
     77 			}
     78 			bootinfo->entry[--bootinfo->nentries] = 0L;
     79 		}
     80 	}
     81 }
     82