include/asm-blackfin/byteorder.h

   1 #ifndef _BLACKFIN_BYTEORDER_H
   2 #define _BLACKFIN_BYTEORDER_H
   3
   4 #include <asm/types.h>
   5 #include <linux/compiler.h>
   6
   7 #ifdef __GNUC__
   8
   9 static __inline__ __attribute_const__ __u32 ___arch__swahb32(__u32 xx)
  10 {
  11         __u32 tmp;
  12         __asm__("%1 = %0 >> 8 (V);\n\t"
  13                 "%0 = %0 << 8 (V);\n\t"
  14                 "%0 = %0 | %1;\n\t"
  15                 : "+d"(xx), "=&d"(tmp));
  16         return xx;
  17 }
  18
  19 static __inline__ __attribute_const__ __u32 ___arch__swahw32(__u32 xx)
  20 {
  21         __u32 rv;
  22         __asm__("%0 = PACK(%1.L, %1.H);\n\t": "=d"(rv): "d"(xx));
  23         return rv;
  24 }
  25
  26 #define __arch__swahb32(x) ___arch__swahb32(x)
  27 #define __arch__swahw32(x) ___arch__swahw32(x)
  28 #define __arch__swab32(x) ___arch__swahb32(___arch__swahw32(x))
  29
  30 static __inline__ __attribute_const__ __u16 ___arch__swab16(__u16 xx)
  31 {
  32         __u32 xw = xx;
  33         __asm__("%0 <<= 8;\n    %0.L = %0.L + %0.H (NS);\n": "+d"(xw));
  34         return (__u16)xw;
  35 }
  36
  37 #define __arch__swab16(x) ___arch__swab16(x)
  38
  39 #endif
  40
  41 #if defined(__GNUC__) && !defined(__STRICT_ANSI__) || defined(__KERNEL__)
  42 #  define __BYTEORDER_HAS_U64__
  43 #  define __SWAB_64_THRU_32__
  44 #endif
  45
  46 #include <linux/byteorder/little_endian.h>
  47
  48 #endif                          /* _BLACKFIN_BYTEORDER_H */