1 /* 2 * AVR32 byteswapping functions. 3 */ 4 #ifndef __ASM_AVR32_SWAB_H 5 #define __ASM_AVR32_SWAB_H 6 7 #include <linux/types.h> 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) __arch_swab16(__u16 val)22static inline __attribute_const__ __u16 __arch_swab16(__u16 val) 23 { 24 return __builtin_bswap_16(val); 25 } 26 #define __arch_swab16 __arch_swab16 27 __arch_swab32(__u32 val)28static 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 */ 36