logo

oasis-root

Compiled tree of Oasis Linux based on own branch at <https://hacktivis.me/git/oasis/> git clone https://anongit.hacktivis.me/git/oasis-root.git

swab.h (764B)

    

  1. /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
  2. #ifndef _ASM_X86_SWAB_H
  3. #define _ASM_X86_SWAB_H
  5. #include <linux/types.h>
  8. #ifdef __GNUC__
  10. static __inline__  __u32 __arch_swab32(__u32 val)
  11. {
  12. 	__asm__("bswapl %0" : "=r" (val) : "0" (val));
  13. 	return val;
  14. }
  15. #define __arch_swab32 __arch_swab32
  17. static __inline__  __u64 __arch_swab64(__u64 val)
  18. {
  19. #ifdef __i386__
  20. 	union {
  21. 		struct {
  22. 			__u32 a;
  23. 			__u32 b;
  24. 		} s;
  25. 		__u64 u;
  26. 	} v;
  27. 	v.u = val;
  28. 	__asm__("bswapl %0 ; bswapl %1 ; xchgl %0,%1"
  29. 	    : "=r" (v.s.a), "=r" (v.s.b)
  30. 	    : "0" (v.s.a), "1" (v.s.b));
  31. 	return v.u;
  32. #else /* __i386__ */
  33. 	__asm__("bswapq %0" : "=r" (val) : "0" (val));
  34. 	return val;
  35. #endif
  36. }
  37. #define __arch_swab64 __arch_swab64
  39. #endif /* __GNUC__ */
  41. #endif /* _ASM_X86_SWAB_H */