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  1. /*
  2.  * Copyright (C) 2005 Jakub Jermar
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29. /** @addtogroup ppc32  
  30.  * @{
  31.  */
  32. /** @file
  33.  */
  34.  
  35. #ifndef KERN_ppc32_BYTEORDER_H_
  36. #define KERN_ppc32_BYTEORDER_H_
  37.  
  38. #include <arch/types.h>
  39. #include <byteorder.h>
  40.  
  41. #define BIG_ENDIAN
  42.  
  43. static inline uint64_t uint64_t_le2host(uint64_t n)
  44. {
  45.     return uint64_t_byteorder_swap(n);
  46. }
  47.  
  48.  
  49. /** Convert little-endian unative_t to host unative_t
  50.  *
  51.  * Convert little-endian unative_t parameter to host endianess.
  52.  *
  53.  * @param n Little-endian unative_t argument.
  54.  *
  55.  * @return Result in host endianess.
  56.  *
  57.  */
  58. static inline unative_t unative_t_le2host(unative_t n)
  59. {
  60.     uintptr_t v;
  61.    
  62.     asm volatile (
  63.         "lwbrx %0, %1, %2\n"
  64.         : "=r" (v)
  65.         : "i" (0), "r" (&n)
  66.     );
  67.     return v;
  68. }
  69.  
  70. #endif
  71.  
  72. /** @}
  73.  */
  74.