2 * Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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26 * $FreeBSD: src/sys/boot/i386/libi386/i386_copy.c,v 1.10 2003/08/25 23:28:31 obrien Exp $
27 * $DragonFly: src/sys/boot/pc32/libi386/i386_copy.c,v 1.3 2003/11/10 06:08:36 dillon Exp $
31 * MD primitives supporting placement of module data
33 * XXX should check load address/size against memory top.
40 #define READIN_BUF (16 * 1024)
43 i386_copyin(const void *src, vm_offset_t dest, const size_t len)
45 if (dest + len >= memtop) {
50 bcopy(src, PTOV(dest), len);
55 i386_copyout(const vm_offset_t src, void *dest, const size_t len)
57 if (src + len >= memtop) {
62 bcopy(PTOV(src), dest, len);
68 i386_readin(const int fd, vm_offset_t dest, const size_t len)
71 size_t resid, chunk, get;
74 if (dest + len >= memtop)
77 chunk = min(READIN_BUF, len);
82 for (resid = len; resid > 0; resid -= got, dest += got) {
83 get = min(chunk, resid);
84 got = read(fd, buf, get);
87 bcopy(buf, PTOV(dest), (size_t)got);