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/* Move double-word library function.

   Copyright (C) 2000, 2003, 2009 Free Software Foundation, Inc.

   Contributed by Red Hat, Inc.

   This file is part of GCC.

   GCC 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 Software Foundation; either version 3, or (at your option)

   any later version.

   GCC 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.

   Under Section 7 of GPL version 3, you are granted additional

   permissions described in the GCC Runtime Library Exception, version

   3.1, as published by the Free Software Foundation.

   You should have received a copy of the GNU General Public License and

   a copy of the GCC Runtime Library Exception along with this program;

   see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see

   <http://www.gnu.org/licenses/>.  */

void

__cmovd (long long *dest, const long long *src, unsigned len)

{

  unsigned i;

  unsigned num = len >> 3;

  unsigned xlen = len & ~7;

  char *dest_byte = (char *)dest;

  const char *src_byte = (const char *)src;

  if (dest_byte < src_byte || dest_byte > src_byte+len)

    {

      for (i = 0; i < num; i++)

        dest[i] = src[i];

      while (len > xlen)

        {

          dest_byte[xlen] = src_byte[xlen];

          xlen++;

        }

    }

  else

    {

      while (len-- > 0)

        dest_byte[len] = src_byte[len];

    }

}