X-Git-Url: https://codewiz.org/gitweb?a=blobdiff_plain;f=mware%2Fbyteorder.h;h=0ed874bbf68910da09c38ee7565fa05d30cc58ea;hb=HEAD;hp=befc15664fbf49647461d9b994dccac43b2399e4;hpb=6720e3d937d90fea2a1cb270f87ac8b3bd7e7353;p=bertos.git diff --git a/mware/byteorder.h b/mware/byteorder.h deleted file mode 100755 index befc1566..00000000 --- a/mware/byteorder.h +++ /dev/null @@ -1,237 +0,0 @@ -/** - * \file - * - * - * \brief Functions to convert integers to/from host byte-order. - * - * \version $Id$ - * - * \author Bernardo Innocenti - * \author Stefano Fedrigo - */ - -/*#* - *#* $Log$ - *#* Revision 1.10 2006/06/10 05:37:03 bernie - *#* Convert to new Doxygen comments. - *#* - *#* Revision 1.9 2005/11/04 16:20:02 bernie - *#* Fix reference to README.devlib in header. - *#* - *#* Revision 1.8 2005/06/14 06:16:03 bernie - *#* Add all missing functions. - *#* - *#* Revision 1.7 2005/04/12 04:08:49 bernie - *#* host_to_net(16|32)(), net_to_host(16|32)(): New functions. - *#* - *#* Revision 1.6 2005/04/11 19:10:28 bernie - *#* Include top-level headers from cfg/ subdir. - *#* - *#* Revision 1.5 2004/08/25 14:12:09 rasky - *#* Aggiornato il comment block dei log RCS - *#* - *#* Revision 1.4 2004/07/22 01:08:43 bernie - *#* swab32(): Fix a very serious bug. - *#* - *#* Revision 1.3 2004/07/20 23:47:12 bernie - *#* Finally remove redundant protos. - *#* - *#* Revision 1.2 2004/07/20 17:09:11 bernie - *#* swab16(), swab32(), cpu_to_be32(), cpu_to_le32(): New functions. - *#* - *#* Revision 1.1 2004/07/20 16:26:15 bernie - *#* Import byte-order macros into DevLib. - *#* - *#*/ - -#ifndef MWARE_BYTEORDER_H -#define MWARE_BYTEORDER_H - -#include -#include - -/** - * Swap upper and lower bytes in a 16-bit value. - */ -INLINE uint16_t swab16(uint16_t x) -{ - return ((x & (uint16_t)0x00FFU) << 8) - | ((x & (uint16_t)0xFF00U) >> 8); -} - -/** - * Reverse bytes in a 32-bit value (e.g.: 0x12345678 -> 0x78563412). - */ -INLINE uint32_t swab32(uint32_t x) -{ - return ((x & (uint32_t)0x000000FFUL) << 24) - | ((x & (uint32_t)0x0000FF00UL) << 8) - | ((x & (uint32_t)0x00FF0000UL) >> 8) - | ((x & (uint32_t)0xFF000000UL) >> 24); -} - -/** - * Reverse bytes in a float value. - */ -INLINE float swab_float(float x) -{ - /* Avoid breaking strict aliasing rules. */ - char *cx = (char *)(&x); - STATIC_ASSERT(sizeof(float) == 4); - #define BYTEORDER_SWAP(a, b) ((a) ^= (b) ^= (a) ^= (b)) - BYTEORDER_SWAP(cx[0], cx[3]); - BYTEORDER_SWAP(cx[1], cx[2]); - #undef BYTEORDER_SWAP - return x; -} - -INLINE uint16_t cpu_to_be16(uint16_t x) -{ - return (CPU_BYTE_ORDER == CPU_LITTLE_ENDIAN) ? swab16(x) : x; -} - -INLINE uint16_t cpu_to_le16(uint16_t x) -{ - return (CPU_BYTE_ORDER == CPU_BIG_ENDIAN) ? swab16(x) : x; -} - -INLINE uint32_t cpu_to_be32(uint32_t x) -{ - return (CPU_BYTE_ORDER == CPU_LITTLE_ENDIAN) ? swab32(x) : x; -} - -INLINE uint32_t cpu_to_le32(uint32_t x) -{ - return (CPU_BYTE_ORDER == CPU_BIG_ENDIAN) ? swab32(x) : x; -} - -INLINE float cpu_to_be_float(float x) -{ - return (CPU_BYTE_ORDER == CPU_LITTLE_ENDIAN) ? swab_float(x) : x; -} - -INLINE float cpu_to_le_float(float x) -{ - return (CPU_BYTE_ORDER == CPU_BIG_ENDIAN) ? swab_float(x) : x; -} - -INLINE uint16_t be16_to_cpu(uint16_t x) -{ - return cpu_to_be16(x); -} - -INLINE uint16_t le16_to_cpu(uint16_t x) -{ - return cpu_to_le16(x); -} - -INLINE uint32_t be32_to_cpu(uint32_t x) -{ - return cpu_to_be32(x); -} - -INLINE uint32_t le32_to_cpu(uint32_t x) -{ - return cpu_to_le32(x); -} - -INLINE float be_float_to_cpu(float x) -{ - return cpu_to_be_float(x); -} - -INLINE float le_float_to_cpu(float x) -{ - return cpu_to_le_float(x); -} - -INLINE uint16_t host_to_net16(uint16_t x) -{ - return cpu_to_be16(x); -} - -INLINE uint16_t net_to_host16(uint16_t x) -{ - return be16_to_cpu(x); -} - -INLINE uint32_t host_to_net32(uint32_t x) -{ - return cpu_to_be32(x); -} - -INLINE uint32_t net_to_host32(uint32_t x) -{ - return be32_to_cpu(x); -} - -INLINE float host_to_net_float(float x) -{ - return cpu_to_be_float(x); -} - -INLINE float net_to_host_float(float x) -{ - return be_float_to_cpu(x); -} - -#ifdef __cplusplus - -/// Type generic byte swapping. -template -INLINE T swab(T x); - -template<> INLINE uint16_t swab(uint16_t x) { return swab16(x); } -template<> INLINE uint32_t swab(uint32_t x) { return swab32(x); } -template<> INLINE int16_t swab(int16_t x) { return static_cast(swab16(static_cast(x))); } -template<> INLINE int32_t swab(int32_t x) { return static_cast(swab32(static_cast(x))); } -template<> INLINE float swab(float x) { return swab_float(x); } - -/// Type generic conversion from CPU byte order to big-endian byte order. -template -INLINE T cpu_to_be(T x) -{ - return (CPU_BYTE_ORDER == CPU_LITTLE_ENDIAN) ? swab(x) : x; -} - -/// Type generic conversion from CPU byte-order to little-endian. -template -INLINE T cpu_to_le(T x) -{ - return (CPU_BYTE_ORDER == CPU_BIG_ENDIAN) ? swab(x) : x; -} - -/// Type generic conversion from big endian byte-order to CPU byte order. -template -INLINE T be_to_cpu(T x) -{ - return cpu_to_be(x); -} - -/// Type generic conversion from little-endian byte order to CPU byte order. -template -INLINE T le_to_cpu(T x) -{ - return cpu_to_le(x); -} - -/// Type generic conversion from network byte order to host byte order. -template -INLINE T net_to_host(T x) -{ - return be_to_cpu(x); -} - -/// Type generic conversion from host byte order to network byte order. -template -INLINE T host_to_net(T x) -{ - return net_to_host(x); -} - -#endif /* __cplusplus */ - -#endif /* MWARE_BYTEORDER_H */