/*

 * LIBOIL - Library of Optimized Inner Loops

 * Copyright (c) 2004 David A. Schleef <ds@schleef.org>

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 * 

 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR

 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,

 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR

 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,

 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING

 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

 * POSSIBILITY OF SUCH DAMAGE.

 */

//Portions Copyright (c)  2008-2009 Nokia Corporation and/or its subsidiary(-ies). All rights reserved. 

#ifdef HAVE_CONFIG_H

#include "config.h"

#endif

#include <string.h>

#include <liboil/liboilfunction.h>

OIL_DECLARE_CLASS (copy_u8);

static void

copy_u8_libc (uint8_t *dest, const uint8_t *src, int n)

{

  memcpy (dest, src, n);

}

OIL_DEFINE_IMPL (copy_u8_libc, copy_u8);

static void

copy_u8_ptr (uint8_t *dest, const uint8_t *src, int n)

{

  while(n--) {

    *dest++ = *src++;

  }

}

OIL_DEFINE_IMPL (copy_u8_ptr, copy_u8);

#ifdef HAVE_UNALIGNED_ACCESS

static void

copy_u8_ints (uint8_t *dest, const uint8_t *src, int n)

{

  int i;

  for(i=0;i<(n&3);i++){

    *dest++ = *src++;

  }

  n >>= 2;

  for(i=0;i<n;i++){

    *(uint32_t *)dest = *(uint32_t *)src;

    dest += 4;

    src += 4;

  }

}

OIL_DEFINE_IMPL (copy_u8_ints, copy_u8);

#endif

#ifdef HAVE_UNALIGNED_ACCESS

/* Submitted by Adam Moss */

static void

copy_u8_llints (uint8_t *dest, const uint8_t *src, int n)

{

  int i;

  for(i=0;i<(n&7);i++){

    *dest++ = *src++;

  }

  n >>= 3;

  for(i=0;i<n;i++){

    *(uint64_t *)dest = *(uint64_t *)src;

    dest += 8;

    src += 8;

  }

}

OIL_DEFINE_IMPL (copy_u8_llints, copy_u8);

#endif

#ifdef HAVE_UNALIGNED_ACCESS

/* Submitted by Adam Moss */

static void

copy_u8_llints_duff (uint8_t *dest, const uint8_t *src, int n)

{

  switch(n&7) {

  case 7: *dest++ = *src++;

  case 6: *dest++ = *src++;

  case 5: *dest++ = *src++;

  case 4: *dest++ = *src++;

  case 3: *dest++ = *src++;

  case 2: *dest++ = *src++;

  case 1: *dest++ = *src++;

  default: ;

  }

  n >>= 3;

  while (n) {

    switch (n & 15) {

    default:

    case 0: *(uint64_t *)dest = *(uint64_t *)src; dest += 8; src += 8;

    case 15: *(uint64_t *)dest = *(uint64_t *)src; dest += 8; src += 8;

    case 14: *(uint64_t *)dest = *(uint64_t *)src; dest += 8; src += 8;

    case 13: *(uint64_t *)dest = *(uint64_t *)src; dest += 8; src += 8;

    case 12: *(uint64_t *)dest = *(uint64_t *)src; dest += 8; src += 8;

    case 11: *(uint64_t *)dest = *(uint64_t *)src; dest += 8; src += 8;

    case 10: *(uint64_t *)dest = *(uint64_t *)src; dest += 8; src += 8;

    case 9: *(uint64_t *)dest = *(uint64_t *)src; dest += 8; src += 8;

    case 8: *(uint64_t *)dest = *(uint64_t *)src; dest += 8; src += 8;

    case 7: *(uint64_t *)dest = *(uint64_t *)src; dest += 8; src += 8;

    case 6: *(uint64_t *)dest = *(uint64_t *)src; dest += 8; src += 8;

    case 5: *(uint64_t *)dest = *(uint64_t *)src; dest += 8; src += 8;

    case 4: *(uint64_t *)dest = *(uint64_t *)src; dest += 8; src += 8;

    case 3: *(uint64_t *)dest = *(uint64_t *)src; dest += 8; src += 8;

    case 2: *(uint64_t *)dest = *(uint64_t *)src; dest += 8; src += 8;

    case 1: *(uint64_t *)dest = *(uint64_t *)src; dest += 8; src += 8;

    }

    n = (n - 1) & ~(int)15;

  }

}

OIL_DEFINE_IMPL (copy_u8_llints_duff, copy_u8);

#endif

#ifdef	__SYMBIAN32__

OilFunctionImpl* __oil_function_impl_copy_u8_libc() {

		return &_oil_function_impl_copy_u8_libc;

}

#endif

#ifdef	__SYMBIAN32__

OilFunctionImpl* __oil_function_impl_copy_u8_ptr() {

		return &_oil_function_impl_copy_u8_ptr;

}

#endif

#ifdef HAVE_UNALIGNED_ACCESS

#ifdef	__SYMBIAN32__

OilFunctionImpl* __oil_function_impl_copy_u8_ints() {

		return &_oil_function_impl_copy_u8_ints;

}

#endif

#endif

#ifdef HAVE_UNALIGNED_ACCESS

#ifdef	__SYMBIAN32__

OilFunctionImpl* __oil_function_impl_copy_u8_llints() {

		return &_oil_function_impl_copy_u8_llints;

}

#endif

#endif

#ifdef HAVE_UNALIGNED_ACCESS

#ifdef	__SYMBIAN32__

OilFunctionImpl* __oil_function_impl_copy_u8_llints_duff() {

		return &_oil_function_impl_copy_u8_llints_duff;

}

#endif

#endif