diff options
Diffstat (limited to 'libc/kernel/arch-arm/asm/byteorder.h')
-rw-r--r-- | libc/kernel/arch-arm/asm/byteorder.h | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/libc/kernel/arch-arm/asm/byteorder.h b/libc/kernel/arch-arm/asm/byteorder.h new file mode 100644 index 0000000..4da37bf --- /dev/null +++ b/libc/kernel/arch-arm/asm/byteorder.h @@ -0,0 +1,51 @@ +/**************************************************************************** + **************************************************************************** + *** + *** 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 __ASM_ARM_BYTEORDER_H +#define __ASM_ARM_BYTEORDER_H + +#include <linux/compiler.h> +#include <asm/types.h> + +static inline __attribute_const__ __u32 ___arch__swab32(__u32 x) +{ + __u32 t; + +#ifndef __thumb__ + if (!__builtin_constant_p(x)) { + + asm ("eor\t%0, %1, %1, ror #16" : "=r" (t) : "r" (x)); + } else +#endif + t = x ^ ((x << 16) | (x >> 16)); + + x = (x << 24) | (x >> 8); + t &= ~0x00FF0000; + x ^= (t >> 8); + + return x; +} + +#define __arch__swab32(x) ___arch__swab32(x) + +#ifndef __STRICT_ANSI__ +#define __BYTEORDER_HAS_U64__ +#define __SWAB_64_THRU_32__ +#endif + +#ifdef __ARMEB__ +#include <linux/byteorder/big_endian.h> +#else +#include <linux/byteorder/little_endian.h> +#endif + +#endif + |