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| author | David Howells <dhowells@redhat.com> | 2012-10-10 12:09:31 +0100 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2012-10-10 12:09:31 +0100 |
| commit | 83b9d3a082a6e5281b5b5fc45337270d915af39d (patch) | |
| tree | e93c546ddcb9b656861efc5c884df77be6d917ad /arch/avr32/include/uapi/asm/swab.h | |
| parent | 42859eea96ba6beabfb0369a1eeffa3c7d2bd9cb (diff) | |
| download | linux-83b9d3a082a6e5281b5b5fc45337270d915af39d.tar.gz linux-83b9d3a082a6e5281b5b5fc45337270d915af39d.tar.xz | |
UAPI: (Scripted) Disintegrate arch/avr32/include/asm
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Michael Kerrisk <mtk.manpages@gmail.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: Dave Jones <davej@redhat.com>
Diffstat (limited to 'arch/avr32/include/uapi/asm/swab.h')
| -rw-r--r-- | arch/avr32/include/uapi/asm/swab.h | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/arch/avr32/include/uapi/asm/swab.h b/arch/avr32/include/uapi/asm/swab.h new file mode 100644 index 000000000000..14cc737bbca6 --- /dev/null +++ b/arch/avr32/include/uapi/asm/swab.h @@ -0,0 +1,35 @@ +/* + * AVR32 byteswapping functions. + */ +#ifndef __ASM_AVR32_SWAB_H +#define __ASM_AVR32_SWAB_H + +#include <linux/types.h> +#include <linux/compiler.h> + +#define __SWAB_64_THRU_32__ + +#ifdef __CHECKER__ +extern unsigned long __builtin_bswap_32(unsigned long x); +extern unsigned short __builtin_bswap_16(unsigned short x); +#endif + +/* + * avr32-linux-gcc versions earlier than 4.2 improperly sign-extends + * the result. + */ +#if !(__GNUC__ == 4 && __GNUC_MINOR__ < 2) +static inline __attribute_const__ __u16 __arch_swab16(__u16 val) +{ + return __builtin_bswap_16(val); +} +#define __arch_swab16 __arch_swab16 + +static inline __attribute_const__ __u32 __arch_swab32(__u32 val) +{ + return __builtin_bswap_32(val); +} +#define __arch_swab32 __arch_swab32 +#endif + +#endif /* __ASM_AVR32_SWAB_H */ |