sys/arch/mips/include/endian_machdep.h

   1 /*      $NetBSD: endian_machdep.h,v 1.1 2000/03/17 00:09:22 mycroft Exp $       */
   2
   3 #ifndef _BYTE_ORDER
   4 # error  Define MIPS target CPU endian-ness in port-specific header file.
   5 #endif
   6
   7 #ifdef _LOCORE
   8
   9 /*
  10  *   Endian-independent assembly-code aliases for unaligned memory accesses.
  11  */
  12 #if _BYTE_ORDER == _LITTLE_ENDIAN
  13 # define LWHI lwr
  14 # define LWLO lwl
  15 # define SWHI swr
  16 # define SWLO swl
  17 # if SZREG == 4
  18 #  define REG_LHI   lwr
  19 #  define REG_LLO   lwl
  20 #  define REG_SHI   swr
  21 #  define REG_SLO   swl
  22 # else
  23 #  define REG_LHI   ldr
  24 #  define REG_LLO   ldl
  25 #  define REG_SHI   sdr
  26 #  define REG_SLO   sdl
  27 # endif
  28 #endif
  29
  30 #if _BYTE_ORDER == _BIG_ENDIAN
  31 # define LWHI lwl
  32 # define LWLO lwr
  33 # define SWHI swl
  34 # define SWLO swr
  35 # if SZREG == 4
  36 #  define REG_LHI   lwl
  37 #  define REG_LLO   lwr
  38 #  define REG_SHI   swl
  39 #  define REG_SLO   swr
  40 # else
  41 #  define REG_LHI   ldl
  42 #  define REG_LLO   ldr
  43 #  define REG_SHI   sdl
  44 #  define REG_SLO   sdr
  45 # endif
  46 #endif
  47
  48 #endif /* LOCORE */