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drivers
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include
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drivers
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byteorder.h

byteorder.h 1.7 KB
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  1. /*
    2. 

  2.  * Copyright (c) 2006-2023, RT-Thread Development Team
    3. 

  3.  *
    4. 

  4.  * SPDX-License-Identifier: Apache-2.0
    5. 

  5.  *
    6. 

  6.  * Change Logs:
    7. 

  7.  * Date           Author       Notes
    8. 

  8.  * 2023-02-25     GuEe-GUI     the first version
    9. 

  9.  */
    10. 

  10. 

  11. #ifndef __BYTEORDER__
    12. 

  12. #define __BYTEORDER__
    13. 

  13. 

  14. #ifdef __CHECKER__
    15. 

  15. #define __bitwise __attribute__((bitwise))
    16. 

  16. #else
    17. 

  17. #define __bitwise
    18. 

  18. #endif
    19. 

  19. 

  20. typedef rt_uint16_t __bitwise rt_le16_t;
    21. 

  21. typedef rt_uint32_t __bitwise rt_le32_t;
    22. 

  22. typedef rt_uint64_t __bitwise rt_le64_t;
    23. 

  23. typedef rt_uint16_t __bitwise rt_be16_t;
    24. 

  24. typedef rt_uint32_t __bitwise rt_be32_t;
    25. 

  25. typedef rt_uint64_t __bitwise rt_be64_t;
    26. 

  26. 

  27. /* gcc defines __BIG_ENDIAN__ on big endian targets */
    28. 

  28. #if defined(__BIG_ENDIAN__) || defined(ARCH_CPU_BIG_ENDIAN)
    29. 

  29. #define rt_cpu_to_be16(x) (x)
    30. 

  30. #define rt_cpu_to_be32(x) (x)
    31. 

  31. #define rt_cpu_to_be64(x) (x)
    32. 

  32. #define rt_be16_to_cpu(x) (x)
    33. 

  33. #define rt_be32_to_cpu(x) (x)
    34. 

  34. #define rt_be64_to_cpu(x) (x)
    35. 

  35. #define rt_le16_to_cpu(x) __builtin_bswap16(x)
    36. 

  36. #define rt_le32_to_cpu(x) __builtin_bswap32(x)
    37. 

  37. #define rt_le64_to_cpu(x) __builtin_bswap64(x)
    38. 

  38. #define rt_cpu_to_le16(x) __builtin_bswap16(x)
    39. 

  39. #define rt_cpu_to_le32(x) __builtin_bswap32(x)
    40. 

  40. #define rt_cpu_to_le64(x) __builtin_bswap64(x)
    41. 

  41. #else
    42. 

  42. #define rt_cpu_to_be16(x) __builtin_bswap16(x)
    43. 

  43. #define rt_cpu_to_be32(x) __builtin_bswap32(x)
    44. 

  44. #define rt_cpu_to_be64(x) __builtin_bswap64(x)
    45. 

  45. #define rt_be16_to_cpu(x) __builtin_bswap16(x)
    46. 

  46. #define rt_be32_to_cpu(x) __builtin_bswap32(x)
    47. 

  47. #define rt_be64_to_cpu(x) __builtin_bswap64(x)
    48. 

  48. #define rt_le16_to_cpu(x) (x)
    49. 

  49. #define rt_le32_to_cpu(x) (x)
    50. 

  50. #define rt_le64_to_cpu(x) (x)
    51. 

  51. #define rt_cpu_to_le16(x) (x)
    52. 

  52. #define rt_cpu_to_le32(x) (x)
    53. 

  53. #define rt_cpu_to_le64(x) (x)
    54. 

  54. #endif /* __BIG_ENDIAN__ || ARCH_CPU_BIG_ENDIAN */
    55. 

  55. 

  56. #undef __bitwise
    57. 

  57. 

  58. #endif /* __BYTEORDER__ */
    59.