arch/avr32/include/asm/byteorder.h

   1 /*
   2  * AVR32 endian-conversion functions.
   3  */
   4 #ifndef __ASM_AVR32_BYTEORDER_H
   5 #define __ASM_AVR32_BYTEORDER_H
   6
   7 #include <asm/types.h>
   8 #include <linux/compiler.h>
   9
  10 #define __BIG_ENDIAN
  11 #define __SWAB_64_THRU_32__
  12
  13 #ifdef __CHECKER__
  14 extern unsigned long __builtin_bswap_32(unsigned long x);
  15 extern unsigned short __builtin_bswap_16(unsigned short x);
  16 #endif
  17
  18 /*
  19  * avr32-linux-gcc versions earlier than 4.2 improperly sign-extends
  20  * the result.
  21  */
  22 #if !(__GNUC__ == 4 && __GNUC_MINOR__ < 2)
  23 static inline __attribute_const__ __u16 __arch_swab16(__u16 val)
  24 {
  25         return __builtin_bswap_16(val);
  26 }
  27 #define __arch_swab16 __arch_swab16
  28
  29 static inline __attribute_const__ __u32 __arch_swab32(__u32 val)
  30 {
  31         return __builtin_bswap_32(val);
  32 }
  33 #define __arch_swab32 __arch_swab32
  34 #endif
  35
  36 #include <linux/byteorder.h>
  37 #endif /* __ASM_AVR32_BYTEORDER_H */