swab.h 1.0 KB

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  1. /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
  2. #ifndef _SPARC_SWAB_H
  3. #define _SPARC_SWAB_H
  4. #include <linux/types.h>
  5. #include <asm/asi.h>
  6. #if defined(__sparc__) && defined(__arch64__)
  7. static inline __u16 __arch_swab16p(const __u16 *addr)
  8. {
  9. __u16 ret;
  10. __asm__ __volatile__ ("lduha [%2] %3, %0"
  11. : "=r" (ret)
  12. : "m" (*addr), "r" (addr), "i" (ASI_PL));
  13. return ret;
  14. }
  15. #define __arch_swab16p __arch_swab16p
  16. static inline __u32 __arch_swab32p(const __u32 *addr)
  17. {
  18. __u32 ret;
  19. __asm__ __volatile__ ("lduwa [%2] %3, %0"
  20. : "=r" (ret)
  21. : "m" (*addr), "r" (addr), "i" (ASI_PL));
  22. return ret;
  23. }
  24. #define __arch_swab32p __arch_swab32p
  25. static inline __u64 __arch_swab64p(const __u64 *addr)
  26. {
  27. __u64 ret;
  28. __asm__ __volatile__ ("ldxa [%2] %3, %0"
  29. : "=r" (ret)
  30. : "m" (*addr), "r" (addr), "i" (ASI_PL));
  31. return ret;
  32. }
  33. #define __arch_swab64p __arch_swab64p
  34. #else
  35. #define __SWAB_64_THRU_32__
  36. #endif /* defined(__sparc__) && defined(__arch64__) */
  37. #endif /* _SPARC_SWAB_H */