1 /*-
2 * Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
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 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
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27 /*
28 * MD primitives supporting placement of module data
29 *
30 * XXX should check load address/size against memory top.
31 */
32 #include <stand.h>
33
34 #include "libi386.h"
35 #include "btxv86.h"
36
37 ssize_t
i386_copyin(const void * src,vm_offset_t dest,const size_t len)38 i386_copyin(const void *src, vm_offset_t dest, const size_t len)
39 {
40 if (dest + len >= memtop) {
41 errno = EFBIG;
42 return (-1);
43 }
44
45 bcopy(src, PTOV(dest), len);
46 return (len);
47 }
48
49 ssize_t
i386_copyout(const vm_offset_t src,void * dest,const size_t len)50 i386_copyout(const vm_offset_t src, void *dest, const size_t len)
51 {
52 if (src + len >= memtop) {
53 errno = EFBIG;
54 return (-1);
55 }
56
57 bcopy(PTOV(src), dest, len);
58 return (len);
59 }
60
61
62 ssize_t
i386_readin(readin_handle_t fd,vm_offset_t dest,const size_t len)63 i386_readin(readin_handle_t fd, vm_offset_t dest, const size_t len)
64 {
65
66 if (dest + len >= memtop_copyin) {
67 errno = EFBIG;
68 return (-1);
69 }
70
71 return (VECTX_READ(fd, PTOV(dest), len));
72 }
73