xref: /freebsd/sys/kern/subr_early.c (revision d0b2dbfa0ecf2bbc9709efc5e20baf8e4b44bbbf)
1 /*-
2  * Copyright (c) 2018 The FreeBSD Foundation
3  *
4  * This software was developed by Mateusz Guzik <mjg@FreeBSD.org>
5  * under sponsorship from the FreeBSD Foundation.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26  * SUCH DAMAGE.
27  */
28 
29 #include <sys/cdefs.h>
30 #include <sys/param.h>
31 #include <sys/types.h>
32 #include <sys/systm.h>
33 #include <machine/cpu.h>
34 
35 #ifndef	MEMSET_EARLY_FUNC
36 #define	MEMSET_EARLY_FUNC	memset
37 #else
38 void *MEMSET_EARLY_FUNC(void *, int, size_t);
39 #endif
40 
41 void *
42 memset_early(void *buf, int c, size_t len)
43 {
44 
45 	return (MEMSET_EARLY_FUNC(buf, c, len));
46 }
47 
48 #ifndef	MEMCPY_EARLY_FUNC
49 #define	MEMCPY_EARLY_FUNC	memcpy
50 #else
51 void *MEMCPY_EARLY_FUNC(void *, const void *, size_t);
52 #endif
53 
54 void *
55 memcpy_early(void *to, const void *from, size_t len)
56 {
57 
58 	return (MEMCPY_EARLY_FUNC(to, from, len));
59 }
60 
61 #ifndef	MEMMOVE_EARLY_FUNC
62 #define	MEMMOVE_EARLY_FUNC	memmove
63 #else
64 void *MEMMOVE_EARLY_FUNC(void *, const void *, size_t);
65 #endif
66 
67 void *
68 memmove_early(void *to, const void *from, size_t len)
69 {
70 
71 	return (MEMMOVE_EARLY_FUNC(to, from, len));
72 }
73