xref: /freebsd/sys/kern/subr_early.c (revision 1da7f3f6f72b2245e458fc7195733268ae4a1136)
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/param.h>
30 #include <sys/types.h>
31 #include <sys/systm.h>
32 #include <machine/cpu.h>
33 
34 #ifndef	MEMSET_EARLY_FUNC
35 #define	MEMSET_EARLY_FUNC	memset
36 #else
37 void *MEMSET_EARLY_FUNC(void *, int, size_t);
38 #endif
39 
40 void *
41 memset_early(void *buf, int c, size_t len)
42 {
43 
44 	return (MEMSET_EARLY_FUNC(buf, c, len));
45 }
46 
47 #ifndef	MEMCPY_EARLY_FUNC
48 #define	MEMCPY_EARLY_FUNC	memcpy
49 #else
50 void *MEMCPY_EARLY_FUNC(void *, const void *, size_t);
51 #endif
52 
53 void *
54 memcpy_early(void *to, const void *from, size_t len)
55 {
56 
57 	return (MEMCPY_EARLY_FUNC(to, from, len));
58 }
59 
60 #ifndef	MEMMOVE_EARLY_FUNC
61 #define	MEMMOVE_EARLY_FUNC	memmove
62 #else
63 void *MEMMOVE_EARLY_FUNC(void *, const void *, size_t);
64 #endif
65 
66 void *
67 memmove_early(void *to, const void *from, size_t len)
68 {
69 
70 	return (MEMMOVE_EARLY_FUNC(to, from, len));
71 }
72