diff options
Diffstat (limited to 'security/nss/lib/freebl/crypto_primitives.c')
| -rw-r--r-- | security/nss/lib/freebl/crypto_primitives.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/security/nss/lib/freebl/crypto_primitives.c b/security/nss/lib/freebl/crypto_primitives.c new file mode 100644 index 0000000000..425f9fcc80 --- /dev/null +++ b/security/nss/lib/freebl/crypto_primitives.c @@ -0,0 +1,36 @@ +/* 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/. */ + +#ifdef FREEBL_NO_DEPEND +#include "stubs.h" +#endif + +/* This file holds useful functions and macros for crypto code. */ +#include "crypto_primitives.h" + +/* + * FREEBL_HTONLL(x): swap bytes in a 64-bit integer. + */ +#if defined(__GNUC__) && (defined(__x86_64__) || defined(__x86_64)) + +__inline__ PRUint64 +swap8b(PRUint64 value) +{ + __asm__("bswapq %0" + : "+r"(value)); + return (value); +} + +#elif defined(IS_LITTLE_ENDIAN) && !defined(_MSC_VER) && !__has_builtin(__builtin_bswap64) && !((defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)))) + +PRUint64 +swap8b(PRUint64 x) +{ + PRUint64 t1 = x; + t1 = ((t1 & SHA_MASK8) << 8) | ((t1 >> 8) & SHA_MASK8); + t1 = ((t1 & SHA_MASK16) << 16) | ((t1 >> 16) & SHA_MASK16); + return (t1 >> 32) | (t1 << 32); +} + +#endif |