config.h

   1 #ifndef _CONFIG_H
   2 #define _CONFIG_H
   3
   4 typedef unsigned char u8;
   5 typedef unsigned short u16;
   6 typedef unsigned int u32;
   7 typedef unsigned long long u64;
   8
   9 typedef char s8;
  10 typedef short s16;
  11 typedef int s32;
  12 typedef long long s64;
  13
  14 #if 0
  15 #define swap_be64(a) (a)
  16 #define swap_be32(a) (a)
  17 #define swap_be16(a) (a)
  18 #else
  19 #define swap_be64(a) __swap64(a)
  20 #define swap_be32(a) __swap32(a)
  21 #define swap_be16(a) __swap16(a)
  22 #endif
  23
  24 static inline u16 __swap16(u16 a)
  25 {
  26         return (((a & 0xff00) >> 8) |
  27                 ((a & 0x00ff) << 8));
  28 }
  29
  30 static inline u32 __swap32(u32 a)
  31 {
  32         return (((a & 0xff000000U) >> 24) |
  33                 ((a & 0x00ff0000U) >> 8) |
  34                 ((a & 0x0000ff00U) << 8) |
  35                 ((a & 0x000000ffU) << 24));
  36 }
  37
  38 static inline u64 __swap64(u64 a)
  39 {
  40         return (((a & 0xff00000000000000ULL) >> 56) |
  41                 ((a & 0x00ff000000000000ULL) >> 40) |
  42                 ((a & 0x0000ff0000000000ULL) >> 24) |
  43                 ((a & 0x000000ff00000000ULL) >> 8)  |
  44                 ((a & 0x00000000ff000000ULL) << 8)  |
  45                 ((a & 0x0000000000ff0000ULL) << 24) |
  46                 ((a & 0x000000000000ff00ULL) << 40) |
  47                 ((a & 0x00000000000000ffULL) << 56));
  48 }
  49
  50
  51 #endif /* _CONFIG_H */