| Harvey Harrison | 292b4d0 | 2009-01-06 14:56:22 -0800 | [diff] [blame] | 1 | /* |
| 2 | * AVR32 byteswapping functions. |
| 3 | */ |
| 4 | #ifndef __ASM_AVR32_SWAB_H |
| 5 | #define __ASM_AVR32_SWAB_H |
| 6 | |
| Jaswinder Singh Rajput | 1c6ce70 | 2009-01-31 10:46:26 +0530 | [diff] [blame] | 7 | #include <linux/types.h> |
| Harvey Harrison | 292b4d0 | 2009-01-06 14:56:22 -0800 | [diff] [blame] | 8 | #include <linux/compiler.h> |
| 9 | |
| 10 | #define __SWAB_64_THRU_32__ |
| 11 | |
| 12 | #ifdef __CHECKER__ |
| 13 | extern unsigned long __builtin_bswap_32(unsigned long x); |
| 14 | extern unsigned short __builtin_bswap_16(unsigned short x); |
| 15 | #endif |
| 16 | |
| 17 | /* |
| 18 | * avr32-linux-gcc versions earlier than 4.2 improperly sign-extends |
| 19 | * the result. |
| 20 | */ |
| 21 | #if !(__GNUC__ == 4 && __GNUC_MINOR__ < 2) |
| 22 | static inline __attribute_const__ __u16 __arch_swab16(__u16 val) |
| 23 | { |
| 24 | return __builtin_bswap_16(val); |
| 25 | } |
| 26 | #define __arch_swab16 __arch_swab16 |
| 27 | |
| 28 | static inline __attribute_const__ __u32 __arch_swab32(__u32 val) |
| 29 | { |
| 30 | return __builtin_bswap_32(val); |
| 31 | } |
| 32 | #define __arch_swab32 __arch_swab32 |
| 33 | #endif |
| 34 | |
| 35 | #endif /* __ASM_AVR32_SWAB_H */ |