i915kms.4: Add missing space.
[dragonfly.git] / sys / boot / pc32 / kgzldr / lib.c
CommitLineData
5ee58eed 1/*-
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2 * Copyright (c) 1999 Global Technology Associates, Inc.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
18 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
19 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
20 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
21 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
22 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
23 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
24 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 *
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26 * $FreeBSD: src/sys/boot/i386/kgzldr/lib.c,v 1.3 2003/08/25 23:28:31 obrien Exp $
27 * $DragonFly: src/sys/boot/pc32/kgzldr/lib.c,v 1.3 2003/11/10 06:08:35 dillon Exp $
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28 */
29
30#include <sys/types.h>
31#include <stddef.h>
32
33#include "kgzldr.h"
34
35#define MEMSIZ 0x8000 /* Memory pool size */
36
37int kgz_con; /* Console control */
38
39static size_t memtot; /* Memory allocated: bytes */
40static u_int memcnt; /* Memory allocated: blocks */
41
42/*
43 * Library functions required by inflate().
44 */
45
46/*
47 * Allocate memory block.
48 */
49unsigned char *
50kzipmalloc(int size)
51{
52 static u_char mem[MEMSIZ];
53 void *ptr;
54
55 if (memtot + size > MEMSIZ)
56 return NULL;
57 ptr = mem + memtot;
58 memtot += size;
59 memcnt++;
60 return ptr;
61}
62
63/*
64 * Free allocated memory block.
65 */
66void
67kzipfree(void *ptr)
68{
69 memcnt--;
70 if (!memcnt)
71 memtot = 0;
72}
73
74/*
75 * Write a string to the console.
76 */
77void
78putstr(const char *str)
79{
80 int c;
81
82 while ((c = *str++)) {
83 if (kgz_con & KGZ_CRT)
84 crt_putchr(c);
85 if (kgz_con & KGZ_SIO)
86 sio_putchr(c);
87 }
88}