diff options
Diffstat (limited to 'libc/kernel/common/linux/byteorder/swabb.h')
-rw-r--r-- | libc/kernel/common/linux/byteorder/swabb.h | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/libc/kernel/common/linux/byteorder/swabb.h b/libc/kernel/common/linux/byteorder/swabb.h new file mode 100644 index 0000000..c5b6a3e --- /dev/null +++ b/libc/kernel/common/linux/byteorder/swabb.h @@ -0,0 +1,52 @@ +/**************************************************************************** + **************************************************************************** + *** + *** This header was automatically generated from a Linux kernel header + *** of the same name, to make information necessary for userspace to + *** call into the kernel available to libc. It contains only constants, + *** structures, and macros generated from the original header, and thus, + *** contains no copyrightable information. + *** + **************************************************************************** + ****************************************************************************/ +#ifndef _LINUX_BYTEORDER_SWABB_H +#define _LINUX_BYTEORDER_SWABB_H + +#define ___swahw32(x) ({ __u32 __x = (x); ((__u32)( (((__u32)(__x) & (__u32)0x0000ffffUL) << 16) | (((__u32)(__x) & (__u32)0xffff0000UL) >> 16) )); }) +#define ___swahb32(x) ({ __u32 __x = (x); ((__u32)( (((__u32)(__x) & (__u32)0x00ff00ffUL) << 8) | (((__u32)(__x) & (__u32)0xff00ff00UL) >> 8) )); }) + +#define ___constant_swahw32(x) ((__u32)( (((__u32)(x) & (__u32)0x0000ffffUL) << 16) | (((__u32)(x) & (__u32)0xffff0000UL) >> 16) )) +#define ___constant_swahb32(x) ((__u32)( (((__u32)(x) & (__u32)0x00ff00ffUL) << 8) | (((__u32)(x) & (__u32)0xff00ff00UL) >> 8) )) + +#ifndef __arch__swahw32 +#define __arch__swahw32(x) ___swahw32(x) +#endif +#ifndef __arch__swahb32 +#define __arch__swahb32(x) ___swahb32(x) +#endif + +#ifndef __arch__swahw32p +#define __arch__swahw32p(x) __swahw32(*(x)) +#endif +#ifndef __arch__swahb32p +#define __arch__swahb32p(x) __swahb32(*(x)) +#endif + +#ifndef __arch__swahw32s +#define __arch__swahw32s(x) do { *(x) = __swahw32p((x)); } while (0) +#endif +#ifndef __arch__swahb32s +#define __arch__swahb32s(x) do { *(x) = __swahb32p((x)); } while (0) +#endif + +#if defined(__GNUC__) && defined(__OPTIMIZE__) +#define __swahw32(x) (__builtin_constant_p((__u32)(x)) ? ___swahw32((x)) : __fswahw32((x))) +#define __swahb32(x) (__builtin_constant_p((__u32)(x)) ? ___swahb32((x)) : __fswahb32((x))) +#else +#define __swahw32(x) __fswahw32(x) +#define __swahb32(x) __fswahb32(x) +#endif + +#ifdef __BYTEORDER_HAS_U64__ +#endif +#endif |