Fully synchronize sys/boot from FreeBSD-5.x, but add / to the module path
[dragonfly.git] / sys / boot / arc / lib / arch / alpha / copy.c
CommitLineData
984263bc
MD
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 * $FreeBSD: src/sys/boot/arc/lib/arch/alpha/copy.c,v 1.2 1999/08/28 00:39:40 peter Exp $
5ee58eed 27 * $DragonFly: src/sys/boot/arc/lib/arch/alpha/Attic/copy.c,v 1.3 2003/11/10 06:08:31 dillon Exp $
984263bc
MD
28 */
29/*
30 * MD primitives supporting placement of module data
31 *
32 * XXX should check load address/size against memory top.
33 */
34#include <stand.h>
35#include <machine/alpha_cpu.h>
36
37#include "libarc.h"
38
39/*
40 * Convert from a 64bit superpage address to a 32bit arc superpage address.
41 */
42static void *
43convert_superpage(vm_offset_t p)
44{
45 if (p < ALPHA_K0SEG_BASE || p >= ALPHA_K0SEG_END) {
46 printf("stupid address %p\n", (void *)p);
47 panic("broken");
48 }
49 return (void *) (0xffffffff80000000 + (p - ALPHA_K0SEG_BASE));
50}
51
52int
53arc_copyin(void *src, vm_offset_t dest, size_t len)
54{
55 bcopy(src, convert_superpage(dest), len);
56 return(len);
57}
58
59int
60arc_copyout(vm_offset_t src, void *dest, size_t len)
61{
62 bcopy(convert_superpage(src), dest, len);
63 return(len);
64}
65
66int
67arc_readin(int fd, vm_offset_t dest, size_t len)
68{
69 return(read(fd, convert_superpage(dest), len));
70}
71
72