com32/include/klibc/endian.h

   1 /*
   2  * klibc/endian.h
   3  *
   4  * Like <endian.h>, but export only double-underscore symbols
   5  */
   6
   7 #ifndef _KLIBC_ENDIAN_H
   8 #define _KLIBC_ENDIAN_H
   9
  10 #define __LITTLE_ENDIAN         /* we're on i386, littleendian */
  11
  12 /* Linux' asm/byteorder.h defines either __LITTLE_ENDIAN or
  13    __BIG_ENDIAN, but the glibc/BSD-ish macros expect both to be
  14    defined with __BYTE_ORDER defining which is actually used... */
  15
  16 #if defined(__LITTLE_ENDIAN)
  17 # undef  __LITTLE_ENDIAN
  18 # define __LITTLE_ENDIAN 1234
  19 # define __BIG_ENDIAN    4321
  20 # define __PDP_ENDIAN    3412
  21 # define __BYTE_ORDER    __LITTLE_ENDIAN
  22 #elif defined(__BIG_ENDIAN)
  23 # undef  __BIG_ENDIAN
  24 # define __LITTLE_ENDIAN 1234
  25 # define __BIG_ENDIAN    4321
  26 # define __PDP_ENDIAN    3412
  27 # define __BYTE_ORDER    __BIG_ENDIAN
  28 #elif defined(__PDP_ENDIAN)
  29 # undef  __PDP_ENDIAN
  30 # define __LITTLE_ENDIAN 1234
  31 # define __BIG_ENDIAN    4321
  32 # define __PDP_ENDIAN    3412
  33 # define __BYTE_ORDER    __PDP_ENDIAN
  34 #else
  35 # error "Unknown byte order!"
  36 #endif
  37
  38 #endif /* _KLIBC_ENDIAN_H */