sam-t2/sam/cpus/vonk/bl/lib/utl/src/BL_Endian.h

/*
* ========== Copyright Header Begin ==========================================
*
* OpenSPARC T2 Processor File: BL_Endian.h
* Copyright (c) 2006 Sun Microsystems, Inc.  All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES.
*
* The above named 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.
*
* The above named 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 work; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
*
* ========== Copyright Header End ============================================
*/
#ifndef __BL_Endian_h__
#define __BL_Endian_h__

#include "BL_Types.h"

// endianess_convert_xx() flips the endianess of value v where xx is
// the number of bits in the value, followed by u for unsigned or s
// for signed value.

uint16_t endianess_convert_16u( uint16_t h )
{
  return (h << 8) | (h >> 8);
}

int16_t endianess_convert_16s( int16_t h )
{
  return int16_t(endianess_convert_16u(h));
}

uint32_t endianess_convert_32u( uint32_t w )
{
  return (w << 24) | ((w & 0xff00) << 8) | ((w >> 8) & 0xff00) | (w >> 24);
}

int32_t endianess_convert_32s( int32_t w )
{
  return int32_t(endianess_convert_32u(w));
}

uint64_t endianess_convert_64( uint64_t x )
{
  return ( x               << 56) | ( x >> 56)
       | ((x & 0x0000ff00) << 40) | ((x >> 40) & 0x0000ff00)
       | ((x & 0x00ff0000) << 24) | ((x >> 24) & 0x00ff0000)
       | ((x & 0xff000000) <<  8) | ((x >>  8) & 0xff000000);
}

#endif