diff options
Diffstat (limited to 'sys/contrib/openzfs/module/icp/include/sha1/sha1_consts.h')
| -rw-r--r-- | sys/contrib/openzfs/module/icp/include/sha1/sha1_consts.h | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/sys/contrib/openzfs/module/icp/include/sha1/sha1_consts.h b/sys/contrib/openzfs/module/icp/include/sha1/sha1_consts.h new file mode 100644 index 000000000000..848d25ef050f --- /dev/null +++ b/sys/contrib/openzfs/module/icp/include/sha1/sha1_consts.h @@ -0,0 +1,65 @@ +/* + * CDDL HEADER START + * + * The contents of this file are subject to the terms of the + * Common Development and Distribution License, Version 1.0 only + * (the "License"). You may not use this file except in compliance + * with the License. + * + * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE + * or http://www.opensolaris.org/os/licensing. + * See the License for the specific language governing permissions + * and limitations under the License. + * + * When distributing Covered Code, include this CDDL HEADER in each + * file and include the License file at usr/src/OPENSOLARIS.LICENSE. + * If applicable, add the following below this CDDL HEADER, with the + * fields enclosed by brackets "[]" replaced with your own identifying + * information: Portions Copyright [yyyy] [name of copyright owner] + * + * CDDL HEADER END + */ +/* + * Copyright (c) 1998, by Sun Microsystems, Inc. + * All rights reserved. + */ + +#ifndef _SYS_SHA1_CONSTS_H +#define _SYS_SHA1_CONSTS_H + +#ifdef __cplusplus +extern "C" { +#endif + +/* + * as explained in sha1.c, loading 32-bit constants on a sparc is expensive + * since it involves both a `sethi' and an `or'. thus, we instead use `ld' + * to load the constants from an array called `sha1_consts'. however, on + * intel (and perhaps other processors), it is cheaper to load the constant + * directly. thus, the c code in SHA1Transform() uses the macro SHA1_CONST() + * which either expands to a constant or an array reference, depending on + * the architecture the code is being compiled for. + */ + +#include <sys/types.h> /* uint32_t */ + +extern const uint32_t sha1_consts[]; + +#if defined(__sparc) +#define SHA1_CONST(x) (sha1_consts[x]) +#else +#define SHA1_CONST(x) (SHA1_CONST_ ## x) +#endif + +/* constants, as provided in FIPS 180-1 */ + +#define SHA1_CONST_0 0x5a827999U +#define SHA1_CONST_1 0x6ed9eba1U +#define SHA1_CONST_2 0x8f1bbcdcU +#define SHA1_CONST_3 0xca62c1d6U + +#ifdef __cplusplus +} +#endif + +#endif /* _SYS_SHA1_CONSTS_H */ |