arch/sparc/include/uapi/asm/swab.h

   1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2 #ifndef _SPARC_SWAB_H
   3 #define _SPARC_SWAB_H
   4
   5 #include <linux/types.h>
   6 #include <asm/asi.h>
   7
   8 #if defined(__sparc__) && defined(__arch64__)
   9 static inline __u16 __arch_swab16p(const __u16 *addr)
  10 {
  11         __u16 ret;
  12
  13         __asm__ __volatile__ ("lduha [%2] %3, %0"
  14                               : "=r" (ret)
  15                               : "m" (*addr), "r" (addr), "i" (ASI_PL));
  16         return ret;
  17 }
  18 #define __arch_swab16p __arch_swab16p
  19
  20 static inline __u32 __arch_swab32p(const __u32 *addr)
  21 {
  22         __u32 ret;
  23
  24         __asm__ __volatile__ ("lduwa [%2] %3, %0"
  25                               : "=r" (ret)
  26                               : "m" (*addr), "r" (addr), "i" (ASI_PL));
  27         return ret;
  28 }
  29 #define __arch_swab32p __arch_swab32p
  30
  31 static inline __u64 __arch_swab64p(const __u64 *addr)
  32 {
  33         __u64 ret;
  34
  35         __asm__ __volatile__ ("ldxa [%2] %3, %0"
  36                               : "=r" (ret)
  37                               : "m" (*addr), "r" (addr), "i" (ASI_PL));
  38         return ret;
  39 }
  40 #define __arch_swab64p __arch_swab64p
  41
  42 #else
  43 #define __SWAB_64_THRU_32__
  44 #endif /* defined(__sparc__) && defined(__arch64__) */
  45
  46 #endif /* _SPARC_SWAB_H */