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Remove crc.mod and move crc command to hashsum.mod.

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Remove lib/crc.c - users updated to use gcrypt implementation.

	* grub-core/commands/crc.c: Removed.
	* grub-core/Makefile.core.def (crc): Module removed.
	* grub-core/commands/hashsum.c (aliases[]): Add crc alias.
	* grub-core/commands/hashsum.c (GRUB_MOD_INIT): Register crc command.
	* grub-core/commands/hashsum.c (GRUB_MOD_FINI): Unregister crc command.
	* grub-core/lib/crc.c: Removed.
	* include/grub/lib/crc.h: Removed.
	* Makefile.util.def (crc): Remove lib/crc.c
	* grub-core/Makefile.core.def (libgrub.a): Remove grub-core/lib/crc.c.
	* util/grub-fstest.c (cmd_crd): Use libgcrypt crc implementation.
	* Makefile.util.def (libgrub.a): Add grub-core/lib/libgcrypt-grub/cipher/crc.c.
	* Makefile.util.def (grub-fstest): Add CFLAGS_GCRY to cflags.
	* Makefile.util.def (grub-fstest): Add CPPFLAGS_GCRY to cppflags.
	* grub-core/efiemu/prepare.c (grub_efiemu_crc): Use libgcrypt crc implementation.
This commit is contained in:
Szymon Janc 2010-09-20 01:40:58 +02:00
parent e0337366d1
commit c55f50180d
9 changed files with 55 additions and 193 deletions
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75
grub-core/lib/crc.c
View file

@ -1,75 +0,0 @@
/* crc.c - crc function */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2008 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/lib/crc.h>
static grub_uint32_t crc32_table [256];
static void
init_crc32_table (void)
{
auto grub_uint32_t reflect (grub_uint32_t ref, int len);
grub_uint32_t reflect (grub_uint32_t ref, int len)
{
grub_uint32_t result = 0;
int i;
for (i = 1; i <= len; i++)
{
if (ref & 1)
result |= 1 << (len - i);
ref >>= 1;
}
return result;
}
grub_uint32_t polynomial = 0x04c11db7;
int i, j;
for(i = 0; i < 256; i++)
{
crc32_table[i] = reflect(i, 8) << 24;
for (j = 0; j < 8; j++)
crc32_table[i] = (crc32_table[i] << 1) ^
(crc32_table[i] & (1 << 31) ? polynomial : 0);
crc32_table[i] = reflect(crc32_table[i], 32);
}
}
grub_uint32_t
grub_getcrc32 (grub_uint32_t crc, void *buf, int size)
{
int i;
grub_uint8_t *data = buf;
if (! crc32_table[1])
init_crc32_table ();
crc^= 0xffffffff;
for (i = 0; i < size; i++)
{
crc = (crc >> 8) ^ crc32_table[(crc & 0xFF) ^ *data];
data++;
}
return crc ^ 0xffffffff;
}