diff options
| -rw-r--r-- | include/endianness.h | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/include/endianness.h b/include/endianness.h new file mode 100644 index 00000000..3b17a8b9 --- /dev/null +++ b/include/endianness.h @@ -0,0 +1,85 @@ +#pragma once + +#ifdef __cplusplus +namespace Ship { +enum class Endianness { + Little = 0, + Big = 1, + +#if (defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__)) || defined(__BIG_ENDIAN__) + Native = Big, +#else + Native = Little, +#endif +}; +} // namespace Ship +#endif + +#ifdef _MSC_VER +#include <stdlib.h> + +#define BSWAP16 _byteswap_ushort +#define BSWAP32 _byteswap_ulong +#define BSWAP64 _byteswap_uint64 + +#define BOMSWAP16 _byteswap_ushort +#define BOMSWAP32 _byteswap_ulong +#define BOMSWAP64 _byteswap_uint64 + +#define BOMSWAP16_CONST(x) ((((x) >> 8) & 0x00FF) | (((x) << 8) & 0xFF00)) +#define BOMSWAP32_CONST(x) \ + ((((x) >> 24) & 0x000000FF) | (((x) >> 8) & 0x0000FF00) | (((x) << 8) & 0x00FF0000) | (((x) << 24) & 0xFF000000)) +#define BOMSWAP64_CONST(x) \ + ((((x) >> 56) & 0x00000000000000FF) | (((x) >> 40) & 0x000000000000FF00) | (((x) >> 24) & 0x0000000000FF0000) | \ + (((x) >> 8) & 0x00000000FF000000) | (((x) << 8) & 0x000000FF00000000) | (((x) << 24) & 0x0000FF0000000000) | \ + (((x) << 40) & 0x00FF000000000000) | (((x) << 56) & 0xFF00000000000000)) +#else + +#define BSWAP16 __builtin_bswap16 +#define BSWAP32 __builtin_bswap32 +#define BSWAP64 __builtin_bswap64 + +#define BOMSWAP16 __builtin_bswap16 +#define BOMSWAP32 __builtin_bswap32 +#define BOMSWAP64 __builtin_bswap64 + +#define BOMSWAP16_CONST __builtin_bswap16 +#define BOMSWAP32_CONST __builtin_bswap32 +#define BOMSWAP64_CONST __builtin_bswap64 +#endif + +#if (defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__)) || defined(__BIG_ENDIAN__) +#ifndef IS_BIGENDIAN +#define IS_BIGENDIAN +#endif +#endif + +#ifdef IS_BIGENDIAN +#define BE16SWAP(x) (x) +#define BE32SWAP(x) (x) +#define BE64SWAP(x) (x) +#define LE16SWAP(x) BOMSWAP16(x) +#define LE32SWAP(x) BOMSWAP32(x) +#define LE64SWAP(x) BOMSWAP64(x) + +#define BE16SWAP_CONST(x) (x) +#define BE32SWAP_CONST(x) (x) +#define BE64SWAP_CONST(x) (x) +#define LE16SWAP_CONST(x) BOMSWAP16_CONST(x) +#define LE32SWAP_CONST(x) BOMSWAP32_CONST(x) +#define LE64SWAP_CONST(x) BOMSWAP64_CONST(x) +#else +#define BE16SWAP(x) BOMSWAP16(x) +#define BE32SWAP(x) BOMSWAP32(x) +#define BE64SWAP(x) BOMSWAP64(x) +#define LE16SWAP(x) (x) +#define LE32SWAP(x) (x) +#define LE64SWAP(x) (x) + +#define BE16SWAP_CONST(x) BOMSWAP16_CONST(x) +#define BE32SWAP_CONST(x) BOMSWAP32_CONST(x) +#define BE64SWAP_CONST(x) BOMSWAP64_CONST(x) +#define LE16SWAP_CONST(x) (x) +#define LE32SWAP_CONST(x) (x) +#define LE64SWAP_CONST(x) (x) +#endif |