diff options
Diffstat (limited to 'protocol/lufa/LUFA-120730/LUFA/Common/Endianness.h')
| -rw-r--r-- | protocol/lufa/LUFA-120730/LUFA/Common/Endianness.h | 489 |
1 files changed, 0 insertions, 489 deletions
diff --git a/protocol/lufa/LUFA-120730/LUFA/Common/Endianness.h b/protocol/lufa/LUFA-120730/LUFA/Common/Endianness.h deleted file mode 100644 index d0812e4e3b..0000000000 --- a/protocol/lufa/LUFA-120730/LUFA/Common/Endianness.h +++ /dev/null @@ -1,489 +0,0 @@ -/*
- LUFA Library
- Copyright (C) Dean Camera, 2012.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2012 Dean Camera (dean [at] fourwalledcubicle [dot] com)
-
- Permission to use, copy, modify, distribute, and sell this
- software and its documentation for any purpose is hereby granted
- without fee, provided that the above copyright notice appear in
- all copies and that both that the copyright notice and this
- permission notice and warranty disclaimer appear in supporting
- documentation, and that the name of the author not be used in
- advertising or publicity pertaining to distribution of the
- software without specific, written prior permission.
-
- The author disclaim all warranties with regard to this
- software, including all implied warranties of merchantability
- and fitness. In no event shall the author be liable for any
- special, indirect or consequential damages or any damages
- whatsoever resulting from loss of use, data or profits, whether
- in an action of contract, negligence or other tortious action,
- arising out of or in connection with the use or performance of
- this software.
-*/
-
-/** \file
- * \brief Endianness and Byte Ordering macros and functions.
- *
- * \copydetails Group_Endianness
- */
-
-/** \ingroup Group_Endianness
- * \defgroup Group_ByteSwapping Byte Reordering
- * \brief Macros and functions for forced byte reordering.
- */
-
-/** \ingroup Group_Endianness
- * \defgroup Group_EndianConversion Endianness Conversion
- * \brief Macros and functions for automatic endianness conversion.
- */
-
-/** \ingroup Group_Common
- * \defgroup Group_Endianness Endianness and Byte Ordering
- * \brief Convenience macros and functions relating to byte (re-)ordering
- *
- * Common library convenience macros and functions relating to byte (re-)ordering.
- *
- * @{
- */
-
-#ifndef __LUFA_ENDIANNESS_H__
-#define __LUFA_ENDIANNESS_H__
-
- /* Enable C linkage for C++ Compilers: */
- #if defined(__cplusplus)
- extern "C" {
- #endif
-
- /* Preprocessor Checks: */
- #if !defined(__INCLUDE_FROM_COMMON_H)
- #error Do not include this file directly. Include LUFA/Common/Common.h instead to gain this functionality.
- #endif
-
- #if !(defined(ARCH_BIG_ENDIAN) || defined(ARCH_LITTLE_ENDIAN))
- #error ARCH_BIG_ENDIAN or ARCH_LITTLE_ENDIAN not set for the specified architecture.
- #endif
-
- /* Public Interface - May be used in end-application: */
- /* Macros: */
- /** Swaps the byte ordering of a 16-bit value at compile-time. Do not use this macro for swapping byte orderings
- * of dynamic values computed at runtime, use \ref SwapEndian_16() instead. The result of this macro can be used
- * inside struct or other variable initializers outside of a function, something that is not possible with the
- * inline function variant.
- *
- * \ingroup Group_ByteSwapping
- *
- * \param[in] x 16-bit value whose byte ordering is to be swapped.
- *
- * \return Input value with the byte ordering reversed.
- */
- #define SWAPENDIAN_16(x) (uint16_t)((((x) & 0xFF00) >> 8) | (((x) & 0x00FF) << 8))
-
- /** Swaps the byte ordering of a 32-bit value at compile-time. Do not use this macro for swapping byte orderings
- * of dynamic values computed at runtime- use \ref SwapEndian_32() instead. The result of this macro can be used
- * inside struct or other variable initializers outside of a function, something that is not possible with the
- * inline function variant.
- *
- * \ingroup Group_ByteSwapping
- *
- * \param[in] x 32-bit value whose byte ordering is to be swapped.
- *
- * \return Input value with the byte ordering reversed.
- */
- #define SWAPENDIAN_32(x) (uint32_t)((((x) & 0xFF000000UL) >> 24UL) | (((x) & 0x00FF0000UL) >> 8UL) | \
- (((x) & 0x0000FF00UL) << 8UL) | (((x) & 0x000000FFUL) << 24UL))
-
- #if defined(ARCH_BIG_ENDIAN) && !defined(le16_to_cpu)
- #define le16_to_cpu(x) SwapEndian_16(x)
- #define le32_to_cpu(x) SwapEndian_32(x)
- #define be16_to_cpu(x) (x)
- #define be32_to_cpu(x) (x)
- #define cpu_to_le16(x) SwapEndian_16(x)
- #define cpu_to_le32(x) SwapEndian_32(x)
- #define cpu_to_be16(x) (x)
- #define cpu_to_be32(x) (x)
- #define LE16_TO_CPU(x) SWAPENDIAN_16(x)
- #define LE32_TO_CPU(x) SWAPENDIAN_32(x)
- #define BE16_TO_CPU(x) (x)
- #define BE32_TO_CPU(x) (x)
- #define CPU_TO_LE16(x) SWAPENDIAN_16(x)
- #define CPU_TO_LE32(x) SWAPENDIAN_32(x)
- #define CPU_TO_BE16(x) (x)
- #define CPU_TO_BE32(x) (x)
- #elif !defined(le16_to_cpu)
- /** \name Run-time endianness conversion */
- //@{
-
- /** Performs a conversion between a Little Endian encoded 16-bit piece of data and the
- * Endianness of the currently selected CPU architecture.
- *
- * On little endian architectures, this macro does nothing.
- *
- * \note This macro is designed for run-time conversion of data - for compile-time endianness
- * conversion, use \ref LE16_TO_CPU instead.
- *
- * \ingroup Group_EndianConversion
- *
- * \param[in] x Data to perform the endianness conversion on.
- *
- * \return Endian corrected version of the input value.
- */
- #define le16_to_cpu(x) (x)
-
- /** Performs a conversion between a Little Endian encoded 32-bit piece of data and the
- * Endianness of the currently selected CPU architecture.
- *
- * On little endian architectures, this macro does nothing.
- *
- * \note This macro is designed for run-time conversion of data - for compile-time endianness
- * conversion, use \ref LE32_TO_CPU instead.
- *
- * \ingroup Group_EndianConversion
- *
- * \param[in] x Data to perform the endianness conversion on.
- *
- * \return Endian corrected version of the input value.
- */
- #define le32_to_cpu(x) (x)
-
- /** Performs a conversion between a Big Endian encoded 16-bit piece of data and the
- * Endianness of the currently selected CPU architecture.
- *
- * On big endian architectures, this macro does nothing.
- *
- * \note This macro is designed for run-time conversion of data - for compile-time endianness
- * conversion, use \ref BE16_TO_CPU instead.
- *
- * \ingroup Group_EndianConversion
- *
- * \param[in] x Data to perform the endianness conversion on.
- *
- * \return Endian corrected version of the input value.
- */
- #define be16_to_cpu(x) SwapEndian_16(x)
-
- /** Performs a conversion between a Big Endian encoded 32-bit piece of data and the
- * Endianness of the currently selected CPU architecture.
- *
- * On big endian architectures, this macro does nothing.
- *
- * \note This macro is designed for run-time conversion of data - for compile-time endianness
- * conversion, use \ref BE32_TO_CPU instead.
- *
- * \ingroup Group_EndianConversion
- *
- * \param[in] x Data to perform the endianness conversion on.
- *
- * \return Endian corrected version of the input value.
- */
- #define be32_to_cpu(x) SwapEndian_32(x)
-
- /** Performs a conversion on a natively encoded 16-bit piece of data to ensure that it
- * is in Little Endian format regardless of the currently selected CPU architecture.
- *
- * On little endian architectures, this macro does nothing.
- *
- * \note This macro is designed for run-time conversion of data - for compile-time endianness
- * conversion, use \ref CPU_TO_LE16 instead.
- *
- * \ingroup Group_EndianConversion
- *
- * \param[in] x Data to perform the endianness conversion on.
- *
- * \return Endian corrected version of the input value.
- */
- #define cpu_to_le16(x) (x)
-
- /** Performs a conversion on a natively encoded 32-bit piece of data to ensure that it
- * is in Little Endian format regardless of the currently selected CPU architecture.
- *
- * On little endian architectures, this macro does nothing.
- *
- * \note This macro is designed for run-time conversion of data - for compile-time endianness
- * conversion, use \ref CPU_TO_LE32 instead.
- *
- * \ingroup Group_EndianConversion
- *
- * \param[in] x Data to perform the endianness conversion on.
- *
- * \return Endian corrected version of the input value.
- */
- #define cpu_to_le32(x) (x)
-
- /** Performs a conversion on a natively encoded 16-bit piece of data to ensure that it
- * is in Big Endian format regardless of the currently selected CPU architecture.
- *
- * On big endian architectures, this macro does nothing.
- *
- * \note This macro is designed for run-time conversion of data - for compile-time endianness
- * conversion, use \ref CPU_TO_BE16 instead.
- *
- * \ingroup Group_EndianConversion
- *
- * \param[in] x Data to perform the endianness conversion on.
- *
- * \return Endian corrected version of the input value.
- */
- #define cpu_to_be16(x) SwapEndian_16(x)
-
- /** Performs a conversion on a natively encoded 32-bit piece of data to ensure that it
- * is in Big Endian format regardless of the currently selected CPU architecture.
- *
- * On big endian architectures, this macro does nothing.
- *
- * \note This macro is designed for run-time conversion of data - for compile-time endianness
- * conversion, use \ref CPU_TO_BE32 instead.
- *
- * \ingroup Group_EndianConversion
- *
- * \param[in] x Data to perform the endianness conversion on.
- *
- * \return Endian corrected version of the input value.
- */
- #define cpu_to_be32(x) SwapEndian_32(x)
-
- //@}
-
- /** \name Compile-time endianness conversion */
- //@{
-
- /** Performs a conversion between a Little Endian encoded 16-bit piece of data and the
- * Endianness of the currently selected CPU architecture.
- *
- * On little endian architectures, this macro does nothing.
- *
- * \note This macro is designed for compile-time conversion of data - for run time endianness
- * conversion, use \ref le16_to_cpu instead.
- *
- * \ingroup Group_EndianConversion
- *
- * \param[in] x Data to perform the endianness conversion on.
- *
- * \return Endian corrected version of the input value.
- */
- #define LE16_TO_CPU(x) (x)
-
- /** Performs a conversion between a Little Endian encoded 32-bit piece of data and the
- * Endianness of the currently selected CPU architecture.
- *
- * On little endian architectures, this macro does nothing.
- *
- * \note This macro is designed for compile-time conversion of data - for run time endianness
- * conversion, use \ref le32_to_cpu instead.
- *
- * \ingroup Group_EndianConversion
- *
- * \param[in] x Data to perform the endianness conversion on.
- *
- * \return Endian corrected version of the input value.
- */
- #define LE32_TO_CPU(x) (x)
-
- /** Performs a conversion between a Big Endian encoded 16-bit piece of data and the
- * Endianness of the currently selected CPU architecture.
- *
- * On big endian architectures, this macro does nothing.
- *
- * \note This macro is designed for compile-time conversion of data - for run-time endianness
- * conversion, use \ref be16_to_cpu instead.
- *
- * \ingroup Group_EndianConversion
- *
- * \param[in] x Data to perform the endianness conversion on.
- *
- * \return Endian corrected version of the input value.
- */
- #define BE16_TO_CPU(x) SWAPENDIAN_16(x)
-
- /** Performs a conversion between a Big Endian encoded 32-bit piece of data and the
- * Endianness of the currently selected CPU architecture.
- *
- * On big endian architectures, this macro does nothing.
- *
- * \note This macro is designed for compile-time conversion of data - for run-time endianness
- * conversion, use \ref be32_to_cpu instead.
- *
- * \ingroup Group_EndianConversion
- *
- * \param[in] x Data to perform the endianness conversion on.
- *
- * \return Endian corrected version of the input value.
- */
- #define BE32_TO_CPU(x) SWAPENDIAN_32(x)
-
- /** Performs a conversion on a natively encoded 16-bit piece of data to ensure that it
- * is in Little Endian format regardless of the currently selected CPU architecture.
- *
- * On little endian architectures, this macro does nothing.
- *
- * \note This macro is designed for compile-time conversion of data - for run-time endianness
- * conversion, use \ref cpu_to_le16 instead.
- *
- * \ingroup Group_EndianConversion
- *
- * \param[in] x Data to perform the endianness conversion on.
- *
- * \return Endian corrected version of the input value.
- */
- #define CPU_TO_LE16(x) (x)
-
- /** Performs a conversion on a natively encoded 32-bit piece of data to ensure that it
- * is in Little Endian format regardless of the currently selected CPU architecture.
- *
- * On little endian architectures, this macro does nothing.
- *
- * \note This macro is designed for compile-time conversion of data - for run-time endianness
- * conversion, use \ref cpu_to_le32 instead.
- *
- * \ingroup Group_EndianConversion
- *
- * \param[in] x Data to perform the endianness conversion on.
- *
- * \return Endian corrected version of the input value.
- */
- #define CPU_TO_LE32(x) (x)
-
- /** Performs a conversion on a natively encoded 16-bit piece of data to ensure that it
- * is in Big Endian format regardless of the currently selected CPU architecture.
- *
- * On big endian architectures, this macro does nothing.
- *
- * \note This macro is designed for compile-time conversion of data - for run-time endianness
- * conversion, use \ref cpu_to_be16 instead.
- *
- * \ingroup Group_EndianConversion
- *
- * \param[in] x Data to perform the endianness conversion on.
- *
- * \return Endian corrected version of the input value.
- */
- #define CPU_TO_BE16(x) SWAPENDIAN_16(x)
-
- /** Performs a conversion on a natively encoded 32-bit piece of data to ensure that it
- * is in Big Endian format regardless of the currently selected CPU architecture.
- *
- * On big endian architectures, this macro does nothing.
- *
- * \note This macro is designed for compile-time conversion of data - for run-time endianness
- * conversion, use \ref cpu_to_be32 instead.
- *
- * \ingroup Group_EndianConversion
- *
- * \param[in] x Data to perform the endianness conversion on.
- *
- * \return Endian corrected version of the input value.
- */
- #define CPU_TO_BE32(x) SWAPENDIAN_32(x)
-
- //! @}
- #endif
-
- /* Inline Functions: */
- /** Function to reverse the byte ordering of the individual bytes in a 16 bit value.
- *
- * \ingroup Group_ByteSwapping
- *
- * \param[in] Word Word of data whose bytes are to be swapped.
- *
- * \return Input data with the individual bytes reversed.
- */
- static inline uint16_t SwapEndian_16(const uint16_t Word) ATTR_WARN_UNUSED_RESULT ATTR_CONST;
- static inline uint16_t SwapEndian_16(const uint16_t Word)
- {
- if (GCC_IS_COMPILE_CONST(Word))
- return SWAPENDIAN_16(Word);
-
- uint8_t Temp;
-
- union
- {
- uint16_t Word;
- uint8_t Bytes[2];
- } Data;
-
- Data.Word = Word;
-
- Temp = Data.Bytes[0];
- Data.Bytes[0] = Data.Bytes[1];
- Data.Bytes[1] = Temp;
-
- return Data.Word;
- }
-
- /** Function to reverse the byte ordering of the individual bytes in a 32 bit value.
- *
- * \ingroup Group_ByteSwapping
- *
- * \param[in] DWord Double word of data whose bytes are to be swapped.
- *
- * \return Input data with the individual bytes reversed.
- */
- static inline uint32_t SwapEndian_32(const uint32_t DWord) ATTR_WARN_UNUSED_RESULT ATTR_CONST;
- static inline uint32_t SwapEndian_32(const uint32_t DWord)
- {
- if (GCC_IS_COMPILE_CONST(DWord))
- return SWAPENDIAN_32(DWord);
-
- uint8_t Temp;
-
- union
- {
- uint32_t DWord;
- uint8_t Bytes[4];
- } Data;
-
- Data.DWord = DWord;
-
- Temp = Data.Bytes[0];
- Data.Bytes[0] = Data.Bytes[3];
- Data.Bytes[3] = Temp;
-
- Temp = Data.Bytes[1];
- Data.Bytes[1] = Data.Bytes[2];
- Data.Bytes[2] = Temp;
-
- return Data.DWord;
- }
-
- /** Function to reverse the byte ordering of the individual bytes in a n byte value.
- *
- * \ingroup Group_ByteSwapping
- *
- * \param[in,out] Data Pointer to a number containing an even number of bytes to be reversed.
- * \param[in] Length Length of the data in bytes.
- *
- * \return Input data with the individual bytes reversed.
- */
- static inline void SwapEndian_n(void* const Data,
- uint8_t Length) ATTR_NON_NULL_PTR_ARG(1);
- static inline void SwapEndian_n(void* const Data,
- uint8_t Length)
- {
- uint8_t* CurrDataPos = (uint8_t*)Data;
-
- while (Length > 1)
- {
- uint8_t Temp = *CurrDataPos;
- *CurrDataPos = *(CurrDataPos + Length - 1);
- *(CurrDataPos + Length - 1) = Temp;
-
- CurrDataPos++;
- Length -= 2;
- }
- }
-
- /* Disable C linkage for C++ Compilers: */
- #if defined(__cplusplus)
- }
- #endif
-
-#endif
-
-/** @} */
-
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