sbi_byteorder.h 1.9 KB

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  1. /*
  2. * SPDX-License-Identifier: BSD-2-Clause
  3. *
  4. * Copyright (c) 2023 Ventana Micro Systems Inc.
  5. */
  6. #ifndef __SBI_BYTEORDER_H__
  7. #define __SBI_BYTEORDER_H__
  8. #include <sbi/sbi_types.h>
  9. #define EXTRACT_BYTE(x, n) ((unsigned long long)((uint8_t *)&x)[n])
  10. #define BSWAP16(x) ((EXTRACT_BYTE(x, 0) << 8) | EXTRACT_BYTE(x, 1))
  11. #define BSWAP32(x) ((EXTRACT_BYTE(x, 0) << 24) | (EXTRACT_BYTE(x, 1) << 16) | \
  12. (EXTRACT_BYTE(x, 2) << 8) | EXTRACT_BYTE(x, 3))
  13. #define BSWAP64(x) ((EXTRACT_BYTE(x, 0) << 56) | (EXTRACT_BYTE(x, 1) << 48) | \
  14. (EXTRACT_BYTE(x, 2) << 40) | (EXTRACT_BYTE(x, 3) << 32) | \
  15. (EXTRACT_BYTE(x, 4) << 24) | (EXTRACT_BYTE(x, 5) << 16) | \
  16. (EXTRACT_BYTE(x, 6) << 8) | EXTRACT_BYTE(x, 7))
  17. #if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ /* CPU(little-endian) */
  18. #define cpu_to_be16(x) ((uint16_t)BSWAP16(x))
  19. #define cpu_to_be32(x) ((uint32_t)BSWAP32(x))
  20. #define cpu_to_be64(x) ((uint64_t)BSWAP64(x))
  21. #define be16_to_cpu(x) ((uint16_t)BSWAP16(x))
  22. #define be32_to_cpu(x) ((uint32_t)BSWAP32(x))
  23. #define be64_to_cpu(x) ((uint64_t)BSWAP64(x))
  24. #define cpu_to_le16(x) ((uint16_t)(x))
  25. #define cpu_to_le32(x) ((uint32_t)(x))
  26. #define cpu_to_le64(x) ((uint64_t)(x))
  27. #define le16_to_cpu(x) ((uint16_t)(x))
  28. #define le32_to_cpu(x) ((uint32_t)(x))
  29. #define le64_to_cpu(x) ((uint64_t)(x))
  30. #else /* CPU(big-endian) */
  31. #define cpu_to_be16(x) ((uint16_t)(x))
  32. #define cpu_to_be32(x) ((uint32_t)(x))
  33. #define cpu_to_be64(x) ((uint64_t)(x))
  34. #define be16_to_cpu(x) ((uint16_t)(x))
  35. #define be32_to_cpu(x) ((uint32_t)(x))
  36. #define be64_to_cpu(x) ((uint64_t)(x))
  37. #define cpu_to_le16(x) ((uint16_t)BSWAP16(x))
  38. #define cpu_to_le32(x) ((uint32_t)BSWAP32(x))
  39. #define cpu_to_le64(x) ((uint64_t)BSWAP64(x))
  40. #define le16_to_cpu(x) ((uint16_t)BSWAP16(x))
  41. #define le32_to_cpu(x) ((uint32_t)BSWAP32(x))
  42. #define le64_to_cpu(x) ((uint64_t)BSWAP64(x))
  43. #endif
  44. #endif /* __SBI_BYTEORDER_H__ */