14e2277962
while others dislike them being extra commits, let's clean them up once and for all for the existing code. If it's ugly, let it only be ugly once :-) Signed-off-by: Stefan Reinauer <stepan@coresystems.de> Acked-by: Stefan Reinauer <stepan@coresystems.de> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5507 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
97 lines
2.9 KiB
C
97 lines
2.9 KiB
C
/*
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* This file is part of the libpayload project.
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*
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* It has originally been taken from the HelenOS project
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* (http://www.helenos.eu), and slightly modified for our purposes.
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*
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* Copyright (c) 2005 Martin Decky
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* - The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <libpayload.h>
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void *memset(void *s, int c, size_t n)
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{
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char *os = s;
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while (n--)
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*(os++) = c;
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return s;
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}
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void *memcpy(void *dst, const void *src, size_t n)
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{
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int i;
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void *ret = dst;
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for(i = 0; i < n % sizeof(unsigned long); i++)
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((unsigned char *) dst)[i] = ((unsigned char *) src)[i];
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n -= i;
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src += i;
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dst += i;
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for(i = 0; i < n / sizeof(unsigned long); i++)
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((unsigned long *) dst)[i] = ((unsigned long *) src)[i];
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return ret;
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}
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void *memmove(void *dst, const void *src, size_t n)
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{
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int i;
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unsigned long offs;
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if (src > dst)
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return memcpy(dst, src, n);
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offs = n - (n % sizeof(unsigned long));
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for (i = (n % sizeof(unsigned long)) - 1; i >= 0; i--)
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((unsigned char *)dst)[i + offs] =
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((unsigned char *)src)[i + offs];
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for (i = n / sizeof(unsigned long) - 1; i >= 0; i--)
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((unsigned long *)dst)[i] = ((unsigned long *)src)[i];
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return dst;
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}
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/**
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* Compare two memory areas.
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*
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* @param s1 Pointer to the first area to compare.
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* @param s2 Pointer to the second area to compare.
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* @param len Size of the first area in bytes (both must have the same length).
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* @return If len is 0, return zero. If the areas match, return zero.
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* Otherwise return non-zero.
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*/
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int memcmp(const void *s1, const void *s2, size_t len)
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{
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for (; len && *(char *)s1++ == *(char *)s2++; len--) ;
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return len;
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}
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