The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/kern/subr_early.c

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    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  * $FreeBSD$
   29  */
   30 
   31 #include <sys/cdefs.h>
   32 __FBSDID("$FreeBSD$");
   33 
   34 #include <sys/param.h>
   35 #include <sys/types.h>
   36 #include <sys/systm.h>
   37 #include <machine/cpu.h>
   38 
   39 #ifndef MEMSET_EARLY_FUNC
   40 #define MEMSET_EARLY_FUNC       memset
   41 #else
   42 void *MEMSET_EARLY_FUNC(void *, int, size_t);
   43 #endif
   44 
   45 void *
   46 memset_early(void *buf, int c, size_t len)
   47 {
   48 
   49         return (MEMSET_EARLY_FUNC(buf, c, len));
   50 }
   51 
   52 #ifndef MEMCPY_EARLY_FUNC
   53 #define MEMCPY_EARLY_FUNC       memcpy
   54 #else
   55 void *MEMCPY_EARLY_FUNC(void *, const void *, size_t);
   56 #endif
   57 
   58 void *
   59 memcpy_early(void *to, const void *from, size_t len)
   60 {
   61 
   62         return (MEMCPY_EARLY_FUNC(to, from, len));
   63 }
   64 
   65 #ifndef MEMMOVE_EARLY_FUNC
   66 #define MEMMOVE_EARLY_FUNC      memmove
   67 #else
   68 void *MEMMOVE_EARLY_FUNC(void *, const void *, size_t);
   69 #endif
   70 
   71 void *
   72 memmove_early(void *to, const void *from, size_t len)
   73 {
   74 
   75         return (MEMMOVE_EARLY_FUNC(to, from, len));
   76 }

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