Home | History | Annotate | Download | only in byteorder 
      1 /****************************************************************************
      2  ****************************************************************************
      3  ***
      4  ***   This header was automatically generated from a Linux kernel header
      5  ***   of the same name, to make information necessary for userspace to
      6  ***   call into the kernel available to libc.  It contains only constants,
      7  ***   structures, and macros generated from the original header, and thus,
      8  ***   contains no copyrightable information.
      9  ***
     10  ****************************************************************************
     11  ****************************************************************************/
     12 #ifndef _LINUX_BYTEORDER_SWABB_H
     13 #define _LINUX_BYTEORDER_SWABB_H
     14 
     15 #define ___swahw32(x)  ({   __u32 __x = (x);   ((__u32)(   (((__u32)(__x) & (__u32)0x0000ffffUL) << 16) |   (((__u32)(__x) & (__u32)0xffff0000UL) >> 16) ));  })
     16 #define ___swahb32(x)  ({   __u32 __x = (x);   ((__u32)(   (((__u32)(__x) & (__u32)0x00ff00ffUL) << 8) |   (((__u32)(__x) & (__u32)0xff00ff00UL) >> 8) ));  })
     17 
     18 #define ___constant_swahw32(x)   ((__u32)(   (((__u32)(x) & (__u32)0x0000ffffUL) << 16) |   (((__u32)(x) & (__u32)0xffff0000UL) >> 16) ))
     19 #define ___constant_swahb32(x)   ((__u32)(   (((__u32)(x) & (__u32)0x00ff00ffUL) << 8) |   (((__u32)(x) & (__u32)0xff00ff00UL) >> 8) ))
     20 
     21 #ifndef __arch__swahw32
     22 #define __arch__swahw32(x) ___swahw32(x)
     23 #endif
     24 #ifndef __arch__swahb32
     25 #define __arch__swahb32(x) ___swahb32(x)
     26 #endif
     27 
     28 #ifndef __arch__swahw32p
     29 #define __arch__swahw32p(x) __swahw32(*(x))
     30 #endif
     31 #ifndef __arch__swahb32p
     32 #define __arch__swahb32p(x) __swahb32(*(x))
     33 #endif
     34 
     35 #ifndef __arch__swahw32s
     36 #define __arch__swahw32s(x) do { *(x) = __swahw32p((x)); } while (0)
     37 #endif
     38 #ifndef __arch__swahb32s
     39 #define __arch__swahb32s(x) do { *(x) = __swahb32p((x)); } while (0)
     40 #endif
     41 
     42 #if defined(__GNUC__) && defined(__OPTIMIZE__)
     43 #define __swahw32(x)  (__builtin_constant_p((__u32)(x)) ?   ___swahw32((x)) :   __fswahw32((x)))
     44 #define __swahb32(x)  (__builtin_constant_p((__u32)(x)) ?   ___swahb32((x)) :   __fswahb32((x)))
     45 #else
     46 #define __swahw32(x) __fswahw32(x)
     47 #define __swahb32(x) __fswahb32(x)
     48 #endif
     49 
     50 #ifdef __BYTEORDER_HAS_U64__
     51 #endif
     52 #endif
     53