diff options
| author | Ralf Baechle <ralf@linux-mips.org> | 1999-02-15 02:15:32 +0000 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 1999-02-15 02:15:32 +0000 |
| commit | 86464aed71025541805e7b1515541aee89879e33 (patch) | |
| tree | e01a457a4912a8553bc65524aa3125d51f29f810 /include/asm-arm/byteorder.h | |
| parent | 88f99939ecc6a95a79614574cb7d95ffccfc3466 (diff) | |
Merge with Linux 2.2.1.
Diffstat (limited to 'include/asm-arm/byteorder.h')
| -rw-r--r-- | include/asm-arm/byteorder.h | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/include/asm-arm/byteorder.h b/include/asm-arm/byteorder.h index 7b232d906..60a191cc3 100644 --- a/include/asm-arm/byteorder.h +++ b/include/asm-arm/byteorder.h @@ -3,7 +3,14 @@ #include <asm/types.h> -#ifdef __GNUC__ +#if defined(__GNUC__) && __GNUC__ == 2 && __GNUC_MINOR__ < 8 + +/* Recent versions of GCC can open code the swaps at least as well + as we can write them by hand, so the "optimisations" here only + make sense for older compilers. Worse, some versions of GCC + actually go wrong in the presence of the assembler versions. + We play it safe and only turn them on for compilers older than + GCC 2.8.0. */ static __inline__ __const__ __u32 ___arch__swab32(__u32 x) { @@ -33,6 +40,11 @@ static __inline__ __const__ __u16 ___arch__swab16(__u16 x) #endif /* __GNUC__ */ +#if !defined(__STRICT_ANSI__) || defined(__KERNEL__) +# define __BYTEORDER_HAS_U64__ +# define __SWAB_64_THRU_32__ +#endif + #include <linux/byteorder/little_endian.h> #endif |