2 * Copyright (c) 2006 The DragonFly Project. All rights reserved.
4 * This code is derived from software contributed to The DragonFly Project
5 * by Matthew Dillon <dillon@backplane.com>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
17 * 3. Neither the name of The DragonFly Project nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific, prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * $DragonFly: src/sys/platform/vkernel/platform/copyio.c,v 1.4 2007/01/07 02:42:24 dillon Exp $
37 #include <sys/types.h>
38 #include <sys/systm.h>
41 #include <vm/vm_page.h>
45 * A bcopy that works dring low level boot, before FP is working
48 ovbcopy(const void *src, void *dst, size_t len)
54 bcopyi(const void *src, void *dst, size_t len)
60 copystr(const void *kfaddr, void *kdaddr, size_t len, size_t *lencopied)
64 for (i = 0; i < len; ++i) {
65 if ((((char *)kdaddr)[i] = ((const char *)kfaddr)[i]) == 0) {
71 return (ENAMETOOLONG);
75 * Copies a NUL-terminated string from user space to kernel space.
76 * The number of bytes copied, including the terminator, is returned in
79 * Returns 0 on success, EFAULT or ENAMETOOLONG on failure.
82 copyinstr(const void *udaddr, void *kaddr, size_t len, size_t *res)
89 * Copy a binary buffer from user space to kernel space.
91 * Returns 0 on success, EFAULT on failure.
94 copyin (const void *udaddr, void *kaddr, size_t len)
101 * Copy a binary buffer from kernel space to user space.
103 * Returns 0 on success, EFAULT on failure.
106 copyout (const void *kaddr, void *udaddr, size_t len)
113 * Fetch the byte at the specified user address. Returns -1 on failure.
116 fubyte(const void *base)
123 * Store a byte at the specified user address. Returns -1 on failure.
126 subyte (void *base, int byte)
133 * Fetch a word (integer, 32 bits) from user space
136 fuword (const void *base)
143 * Store a word (integer, 32 bits) to user space
146 suword (void *base, long word)
153 * Fetch an short word (16 bits) from user space
163 * Store a short word (16 bits) to user space
166 susword (void *base, int word)