bitrev.h 608 B

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  1. /* SPDX-License-Identifier: GPL-2.0 */
  2. #ifndef __MIPS_ASM_BITREV_H__
  3. #define __MIPS_ASM_BITREV_H__
  4. #include <linux/swab.h>
  5. static __always_inline __attribute_const__ u32 __arch_bitrev32(u32 x)
  6. {
  7. u32 ret;
  8. asm("bitswap %0, %1" : "=r"(ret) : "r"(__swab32(x)));
  9. return ret;
  10. }
  11. static __always_inline __attribute_const__ u16 __arch_bitrev16(u16 x)
  12. {
  13. u16 ret;
  14. asm("bitswap %0, %1" : "=r"(ret) : "r"(__swab16(x)));
  15. return ret;
  16. }
  17. static __always_inline __attribute_const__ u8 __arch_bitrev8(u8 x)
  18. {
  19. u8 ret;
  20. asm("bitswap %0, %1" : "=r"(ret) : "r"(x));
  21. return ret;
  22. }
  23. #endif /* __MIPS_ASM_BITREV_H__ */