text: /*
   *	PearPC
   *	sysendian.h
   *
   *	Copyright (C) 1999-2004 Stefan Weyergraf
   *
   *	This program is free software; you can redistribute it and/or modify
   *	it under the terms of the GNU General Public License version 2 as
   *	published by the Free Software Foundation.
   *
   *	This program is distributed in the hope that it will be useful,
   *	but WITHOUT ANY WARRANTY; without even the implied warranty of
   *	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   *	GNU General Public License for more details.
   *
   *	You should have received a copy of the GNU General Public License
   *	along with this program; if not, write to the Free Software
   *	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
   */
  
  #ifndef __SYSTEM_ARCH_SPECIFIC_SYSENDIAN_H__
  #define __SYSTEM_ARCH_SPECIFIC_SYSENDIAN_H__
  
  #include "types.h"
  //#include "config.h"
  
  static inline FUNCTION_CONST uint32 ppc_bswap_word(uint32 data)
  {
  	return (data>>24)|((data>>8)&0xff00)|((data<<8)&0xff0000)|(data<<24);
  }
  
  static inline FUNCTION_CONST uint64 ppc_bswap_dword(uint64 data)
  {
  	return (((uint64)ppc_bswap_word(data)) << 32) | (uint64)ppc_bswap_word(data >> 32);
  }
  
  static inline FUNCTION_CONST uint16 ppc_bswap_half(uint16 data)
  {
  	return (data<<8)|(data>>8);
  }
  
  #if HOST_ENDIANESS == HOST_ENDIANESS_LE
  
  /*
   *		Little-endian machine
   */
  
  #	define ppc_dword_from_BE(data)	(ppc_bswap_dword(data))
  #	define ppc_word_from_BE(data)	(ppc_bswap_word(data))
  #	define ppc_half_from_BE(data)	(ppc_bswap_half(data))
  
  #	define ppc_dword_from_LE(data)	((uint64)(data))
  #	define ppc_word_from_LE(data)	((uint32)(data))
  #	define ppc_half_from_LE(data)	((uint16)(data))
  
  #	define ppc_dword_to_LE(data)	ppc_dword_from_LE(data)
  #	define ppc_word_to_LE(data)	ppc_word_from_LE(data)
  #	define ppc_half_to_LE(data)	ppc_half_from_LE(data)
  
  #	define ppc_dword_to_BE(data)	ppc_dword_from_BE(data)
  #	define ppc_word_to_BE(data)	ppc_word_from_BE(data)
  #	define ppc_half_to_BE(data)	ppc_half_from_BE(data)
  
  #elif HOST_ENDIANESS == HOST_ENDIANESS_BE
  
  /*
   *		Big-endian machine
   */
  #	define ppc_dword_from_BE(data)	((uint64)(data))
  #	define ppc_word_from_BE(data)	((uint32)(data))
  #	define ppc_half_from_BE(data)	((uint16)(data))
  
  #	define ppc_dword_from_LE(data)	(ppc_bswap_dword(data))
  #	define ppc_word_from_LE(data)	(ppc_bswap_word(data))
  #	define ppc_half_from_LE(data)	(ppc_bswap_half(data))
  
  #	define ppc_dword_to_LE(data)	ppc_dword_from_LE(data)
  #	define ppc_word_to_LE(data)	ppc_word_from_LE(data)
  #	define ppc_half_to_LE(data)	ppc_half_from_LE(data)
  
  #	define ppc_dword_to_BE(data)	ppc_dword_from_BE(data)
  #	define ppc_word_to_BE(data)	ppc_word_from_BE(data)
  #	define ppc_half_to_BE(data)	ppc_half_from_BE(data)
  
  #else
  
  /*
   *		Weird-endian machine
   *	HOST_ENDIANESS is neither little- nor big-endian?
   */
  #	error "What kind of a weird machine do you have? It's neither little- nor big-endian??? This is unsupported."
  
  #endif
  
  #endif
  