release/src-rt-6.x.4708/linux/linux-2.6.36/arch/sparc/include/asm/swab.h

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