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#ifndef CYGONCE_HAL_HAL_ENDIAN_H

#define CYGONCE_HAL_HAL_ENDIAN_H

//=============================================================================

//

//      hal_endian.h

//

//      Endian conversion macros

//

//=============================================================================

// ####ECOSGPLCOPYRIGHTBEGIN####                                            

// -------------------------------------------                              

// This file is part of eCos, the Embedded Configurable Operating System.   

// Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.

//

// eCos is free software; you can redistribute it and/or modify it under    

// the terms of the GNU General Public License as published by the Free     

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// version.                                                                 

//

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// 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 eCos; if not, write to the Free Software Foundation, Inc.,    

// 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.            

//

// As a special exception, if other files instantiate templates or use      

// macros or inline functions from this file, or you compile this file      

// and link it with other works to produce a work based on this file,       

// this file does not by itself cause the resulting work to be covered by   

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// must still be made available in accordance with section (3) of the GNU   

// General Public License v2.                                               

//

// This exception does not invalidate any other reasons why a work based    

// on this file might be covered by the GNU General Public License.         

// -------------------------------------------                              

// ####ECOSGPLCOPYRIGHTEND####                                              

//=============================================================================

//#####DESCRIPTIONBEGIN####

//

// Author(s):   jskov

// Contributors:jskov

// Date:        2001-10-04

// Purpose:     Endian conversion macros

// Usage:       #include <cyg/hal/hal_endian.h>

//                           

//####DESCRIPTIONEND####

//

//=============================================================================

#include <pkgconf/hal.h>                // CYGBLD_HAL_ENDIAN_H

#include <cyg/infra/cyg_type.h>         // endian setting

// Allow HALs to override the generic implementation of swap macros

#ifdef CYGBLD_HAL_ENDIAN_H

# include CYGBLD_HAL_ENDIAN_H

#endif

#ifndef CYG_SWAP16

# define CYG_SWAP16(_x_)                                        \

    ({ cyg_uint16 _x = (_x_); (cyg_uint16)((_x << 8) | (_x >> 8)); })

#endif

#ifndef CYG_SWAP32

# define CYG_SWAP32(_x_)                        \

    ({ cyg_uint32 _x = (_x_);                   \

       ((_x << 24) |                            \

       ((0x0000FF00UL & _x) <<  8) |            \

       ((0x00FF0000UL & _x) >>  8) |            \

       (_x  >> 24)); })

#endif

#if (CYG_BYTEORDER == CYG_LSBFIRST)

# define CYG_CPU_TO_BE16(_x_) CYG_SWAP16((_x_))

# define CYG_CPU_TO_BE32(_x_) CYG_SWAP32((_x_))

# define CYG_BE16_TO_CPU(_x_) CYG_SWAP16((_x_))

# define CYG_BE32_TO_CPU(_x_) CYG_SWAP32((_x_))

# define CYG_CPU_TO_LE16(_x_) (_x_)

# define CYG_CPU_TO_LE32(_x_) (_x_)

# define CYG_LE16_TO_CPU(_x_) (_x_)

# define CYG_LE32_TO_CPU(_x_) (_x_)

#elif (CYG_BYTEORDER == CYG_MSBFIRST)

# define CYG_CPU_TO_BE16(_x_) (_x_)

# define CYG_CPU_TO_BE32(_x_) (_x_)

# define CYG_BE16_TO_CPU(_x_) (_x_)

# define CYG_BE32_TO_CPU(_x_) (_x_)

# define CYG_CPU_TO_LE16(_x_) CYG_SWAP16((_x_))

# define CYG_CPU_TO_LE32(_x_) CYG_SWAP32((_x_))

# define CYG_LE16_TO_CPU(_x_) CYG_SWAP16((_x_))

# define CYG_LE32_TO_CPU(_x_) CYG_SWAP32((_x_))

#else

# error "Endian mode not selected"

#endif

//-----------------------------------------------------------------------------

#endif // CYGONCE_HAL_HAL_ENDIAN_H

// End of hal_endian.h