ac2f4d1789
- toolkit V2.8.0.1@14806 - BSL V1.8.0.0@14590 - tcpserver: V1.4.3.0@14676 (marshaller V2.4.0.1@14551)
93 lines
3.9 KiB
C
93 lines
3.9 KiB
C
/**************************************************************************************
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Copyright (c) Hilscher Gesellschaft fuer Systemautomation mbH. All Rights Reserved.
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***************************************************************************************
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$Id: cifXEndianess.h 13253 2019-10-11 10:57:04Z LuisContreras $:
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Description:
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Little/Big Endian conversion
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Changes:
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Date Description
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-----------------------------------------------------------------------------------
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2019-10-11 Change prototype of endianess conversion function
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2018-10-10 - Updated header and definitions to new Hilscher defines
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- Derived from cifX Toolkit V1.6.0.0
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**************************************************************************************/
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/*****************************************************************************/
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/*! \file cifXEndianess.h
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* Little/Big Endian conversion */
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/*****************************************************************************/
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#ifndef __CIFX_ENDIANESS__H
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#define __CIFX_ENDIANESS__H
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/* Give the user the possibility to use own macros for
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endianess conversion */
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#ifndef BIGENDIAN_MACROS_PROVIDED
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#ifndef CIFX_TOOLKIT_BIGENDIAN
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/* Little endian, so we don't need a conversion */
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#define LE16_TO_HOST(a) (a)
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#define LE32_TO_HOST(a) (a)
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#define LE64_TO_HOST(a) (a)
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#define HOST_TO_LE16(a) (a)
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#define HOST_TO_LE32(a) (a)
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#define HOST_TO_LE64(a) (a)
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#else
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/* BIG endian, so we DO need a conversion */
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/*lint -emacro(572, LE??_TO_HOST) : Excessive shift value */
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/*lint -esym(666, LE??_TO_HOST) : Expression with side effects passed to repeated parameter 1 */
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#define LE16_TO_HOST(a) ( (((a) & 0x00FF) << 8) | \
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(((a) & 0xFF00) >> 8) )
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#define LE32_TO_HOST(a) ( (((a) & 0x000000FFUL) << 24) | \
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(((a) & 0x0000FF00UL) << 8) | \
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(((a) & 0x00FF0000UL) >> 8) | \
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(((a) & 0xFF000000UL) >> 24) )
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#define LE64_TO_HOST(a) ( (((a) & 0x00000000000000FFULL) << 56) | \
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(((a) & 0x000000000000FF00ULL) << 40) | \
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(((a) & 0x0000000000FF0000ULL) << 24) | \
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(((a) & 0x00000000FF000000ULL) << 8) | \
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(((a) & 0x000000FF00000000ULL) >> 8) | \
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(((a) & 0x0000FF0000000000ULL) >> 24) | \
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(((a) & 0x00FF000000000000ULL) >> 40) | \
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(((a) & 0xFF00000000000000ULL) >> 56) )
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#define HOST_TO_LE16(a) LE16_TO_HOST(a)
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#define HOST_TO_LE32(a) LE32_TO_HOST(a)
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#define HOST_TO_LE64(a) LE64_TO_HOST(a)
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#endif
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#endif
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typedef enum
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{
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eCIFX_ENDIANESS_WIDTH_8BIT,
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eCIFX_ENDIANESS_WIDTH_16BIT,
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eCIFX_ENDIANESS_WIDTH_32BIT,
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eCIFX_ENDIANESS_WIDTH_64BIT
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} CIFX_ENDIANESS_WIDTH;
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/*****************************************************************************/
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/*! Structure definition for endianess conversion function. An array of this
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* this structure is used for automatically transforming a structure (which
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* is described by this structure) from/to host endianess */
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/*****************************************************************************/
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typedef struct CIFX_ENDIANESS_ENTRY_Ttag
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{
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int iOffset; /*!< Offset inside the buffer */
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CIFX_ENDIANESS_WIDTH eWidth; /*!< Data width of structure */
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int iElementCnt; /*!< Number of elements to convert */
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} CIFX_ENDIANESS_ENTRY_T, *PCIFX_ENDIANESS_ENTRY_T;
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int32_t cifXConvertEndianess(unsigned int uiOffset, void* pvBuffer, int iBufferLen,
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const CIFX_ENDIANESS_ENTRY_T* atConv, int iConvLen);
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#endif /* __CIFX_ENDIANESS__H */
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