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/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2010 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <grub/types.h>
#include <grub/misc.h>
#include <grub/decompressor.h>
void *
grub_memset (void *s, int c, grub_size_t len)
{
grub_uint8_t *ptr;
for (ptr = s; len; ptr++, len--)
*ptr = c;
return s;
}
void *
grub_memmove (void *dest, const void *src, grub_size_t n)
{
char *d = (char *) dest;
const char *s = (const char *) src;
if (d < s)
while (n--)
*d++ = *s++;
else
{
d += n;
s += n;
while (n--)
*--d = *--s;
}
return dest;
}
int
grub_memcmp (const void *s1, const void *s2, grub_size_t n)
{
const unsigned char *t1 = s1;
const unsigned char *t2 = s2;
while (n--)
{
if (*t1 != *t2)
return (int) *t1 - (int) *t2;
t1++;
t2++;
}
return 0;
}
void *grub_decompressor_scratch;
void
find_scratch (void *src, void *dst, unsigned long srcsize,
unsigned long dstsize)
{
#ifdef _mips
/* Decoding from ROM. */
if (((grub_addr_t) src & 0x10000000))
{
grub_decompressor_scratch = (void *) ALIGN_UP((grub_addr_t) dst + dstsize,
256);
return;
}
#endif
if ((char *) src + srcsize > (char *) dst + dstsize)
grub_decompressor_scratch = (void *) ALIGN_UP ((grub_addr_t) src + srcsize,
256);
else
grub_decompressor_scratch = (void *) ALIGN_UP ((grub_addr_t) dst + dstsize,
256);
return;
}
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