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Diffstat (limited to 'src/crypto/isa-l/isa-l_crypto/include/endian_helper.h')
-rw-r--r-- | src/crypto/isa-l/isa-l_crypto/include/endian_helper.h | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/src/crypto/isa-l/isa-l_crypto/include/endian_helper.h b/src/crypto/isa-l/isa-l_crypto/include/endian_helper.h new file mode 100644 index 000000000..87d90460a --- /dev/null +++ b/src/crypto/isa-l/isa-l_crypto/include/endian_helper.h @@ -0,0 +1,83 @@ +/********************************************************************** + Copyright(c) 2011-2016 Intel Corporation All rights reserved. + + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions + are met: + * Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + * Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in + the documentation and/or other materials provided with the + distribution. + * Neither the name of Intel Corporation nor the names of its + contributors may be used to endorse or promote products derived + from this software without specific prior written permission. + + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +**********************************************************************/ + +#ifndef _ENDIAN_HELPER_H_ +#define _ENDIAN_HELPER_H_ + +/** + * @file endian_helper.h + * @brief Byte order helper routines + * + */ + +#ifdef __cplusplus +extern "C" { +#endif + +#if defined (__ICC) +# define byteswap32(x) _bswap(x) +# define byteswap64(x) _bswap64(x) +#elif defined (__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)) +# define byteswap32(x) __builtin_bswap32(x) +# define byteswap64(x) __builtin_bswap64(x) +#else +# define byteswap32(x) ( ((x) << 24) \ + | (((x) & 0xff00) << 8) \ + | (((x) & 0xff0000) >> 8) \ + | ((x)>>24)) +# define byteswap64(x) ( (((x) & (0xffull << 0)) << 56) \ + | (((x) & (0xffull << 8)) << 40) \ + | (((x) & (0xffull << 16)) << 24) \ + | (((x) & (0xffull << 24)) << 8) \ + | (((x) & (0xffull << 32)) >> 8) \ + | (((x) & (0xffull << 40)) >> 24) \ + | (((x) & (0xffull << 48)) >> 40) \ + | (((x) & (0xffull << 56)) >> 56)) +#endif + +// This check works when using GCC (or LLVM). Assume little-endian +// if any other compiler is being used. +#if defined(__BYTE_ORDER__) && defined(__ORDER_BIG_ENDIAN__) \ + && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ +#define to_le32(x) byteswap32(x) +#define to_le64(x) byteswap64(x) +#define to_be32(x) (x) +#define to_be64(x) (x) +#else +#define to_le32(x) (x) +#define to_le64(x) (x) +#define to_be32(x) byteswap32(x) +#define to_be64(x) byteswap64(x) +#endif + +#ifdef __cplusplus +} +#endif + +#endif // _ISA_HELPER_H_ |