| Dan Albert | 287553d | 2017-02-16 10:47:51 -0800 | [diff] [blame] | 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 |