include/asm-generic/unaligned.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __ASM_GENERIC_UNALIGNED_H
   3 #define __ASM_GENERIC_UNALIGNED_H
   4
   5 /*
   6  * This is the most generic implementation of unaligned accesses
   7  * and should work almost anywhere.
   8  */
   9 #include <asm/byteorder.h>
  10
  11 /* Set by the arch if it can handle unaligned accesses in hardware. */
  12 #ifdef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
  13 # include <linux/unaligned/access_ok.h>
  14 #endif
  15
  16 #if defined(__LITTLE_ENDIAN)
  17 # ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
  18 #  include <linux/unaligned/le_struct.h>
  19 #  include <linux/unaligned/be_byteshift.h>
  20 # endif
  21 # include <linux/unaligned/generic.h>
  22 # define get_unaligned  __get_unaligned_le
  23 # define put_unaligned  __put_unaligned_le
  24 #elif defined(__BIG_ENDIAN)
  25 # ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
  26 #  include <linux/unaligned/be_struct.h>
  27 #  include <linux/unaligned/le_byteshift.h>
  28 # endif
  29 # include <linux/unaligned/generic.h>
  30 # define get_unaligned  __get_unaligned_be
  31 # define put_unaligned  __put_unaligned_be
  32 #else
  33 # error need to define endianess
  34 #endif
  35
  36 #endif /* __ASM_GENERIC_UNALIGNED_H */