diff options
Diffstat (limited to 'security/nss/lib/freebl/crypto_primitives.h')
| -rw-r--r-- | security/nss/lib/freebl/crypto_primitives.h | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/security/nss/lib/freebl/crypto_primitives.h b/security/nss/lib/freebl/crypto_primitives.h new file mode 100644 index 0000000000..86a6927ad6 --- /dev/null +++ b/security/nss/lib/freebl/crypto_primitives.h @@ -0,0 +1,66 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +/* This file holds useful functions and macros for crypto code. */ + +#ifdef FREEBL_NO_DEPEND +#include "stubs.h" +#endif + +#include <stdlib.h> +#include "prtypes.h" + +/* For non-clang platform */ +#ifndef __has_builtin +#define __has_builtin(x) 0 +#endif + +/* Unfortunately this isn't always set when it should be. */ +#if defined(HAVE_LONG_LONG) + +/* + * ROTR64/ROTL64(x, n): rotate a 64-bit integer x by n bites to the right/left. + */ +#if defined(_MSC_VER) +#pragma intrinsic(_rotr64, _rotl64) +#define ROTR64(x, n) _rotr64((x), (n)) +#define ROTL64(x, n) _rotl64((x), (n)) +#else +#define ROTR64(x, n) (((x) >> (n)) | ((x) << (64 - (n)))) +#define ROTL64(x, n) (((x) << (n)) | ((x) >> (64 - (n)))) +#endif + +/* + * FREEBL_HTONLL(x): swap bytes in a 64-bit integer. + */ +#if defined(IS_LITTLE_ENDIAN) +#if defined(_MSC_VER) + +#pragma intrinsic(_byteswap_uint64) +#define FREEBL_HTONLL(x) _byteswap_uint64(x) + +/* gcc doesn't have __has_builtin, but it does have __builtin_bswap64 */ +#elif __has_builtin(__builtin_bswap64) || (defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3))) + +#define FREEBL_HTONLL(x) __builtin_bswap64(x) + +#elif defined(__GNUC__) && (defined(__x86_64__) || defined(__x86_64)) + +PRUint64 swap8b(PRUint64 value); +#define FREEBL_HTONLL(x) swap8b(x) + +#else + +#define SHA_MASK16 0x0000FFFF0000FFFFULL +#define SHA_MASK8 0x00FF00FF00FF00FFULL +PRUint64 swap8b(PRUint64 x); +#define FREEBL_HTONLL(x) swap8b(x) + +#endif /* _MSC_VER */ + +#else /* IS_LITTLE_ENDIAN */ +#define FREEBL_HTONLL(x) (x) +#endif + +#endif /* HAVE_LONG_LONG */ |