include/asm-generic/unaligned.h

   1 #ifndef __ASM_GENERIC_UNALIGNED_H
   2 #define __ASM_GENERIC_UNALIGNED_H
   3
   4 /*
   5  * This is the most generic implementation of unaligned accesses
   6  * and should work almost anywhere.
   7  */
   8 #include <asm/byteorder.h>
   9
  10 /* Set by the arch if it can handle unaligned accesses in hardware. */
  11 #ifdef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
  12 # include <linux/unaligned/access_ok.h>
  13 #endif
  14
  15 #if defined(__LITTLE_ENDIAN)
  16 # ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
  17 #  include <linux/unaligned/le_struct.h>
  18 #  include <linux/unaligned/be_byteshift.h>
  19 # endif
  20 # include <linux/unaligned/generic.h>
  21 # define get_unaligned  __get_unaligned_le
  22 # define put_unaligned  __put_unaligned_le
  23 #elif defined(__BIG_ENDIAN)
  24 # ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
  25 #  include <linux/unaligned/be_struct.h>
  26 #  include <linux/unaligned/le_byteshift.h>
  27 # endif
  28 # include <linux/unaligned/generic.h>
  29 # define get_unaligned  __get_unaligned_be
  30 # define put_unaligned  __put_unaligned_be
  31 #else
  32 # error need to define endianess
  33 #endif
  34
  35 #endif /* __ASM_GENERIC_UNALIGNED_H */