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/* libgcc routines for RL78

   Copyright (C) 2005, 2009, 2011

   Free Software Foundation, Inc.

   Contributed by Red Hat.

   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/>.  */

UINT_TYPE C3(udivmod,NAME_MODE,4) (UINT_TYPE, UINT_TYPE, word_type);

SINT_TYPE C3(__div,NAME_MODE,3)   (SINT_TYPE, SINT_TYPE);

SINT_TYPE C3(__mod,NAME_MODE,3)   (SINT_TYPE, SINT_TYPE);

UINT_TYPE C3(__udiv,NAME_MODE,3)  (UINT_TYPE, UINT_TYPE);

UINT_TYPE C3(__umod,NAME_MODE,3)  (UINT_TYPE, UINT_TYPE);

UINT_TYPE

C3(udivmod,NAME_MODE,4) (UINT_TYPE num, UINT_TYPE den, word_type modwanted)

{

  UINT_TYPE bit = 1;

  UINT_TYPE res = 0;

  while (den < num && bit && !(den & (1L << BITS_MINUS_1)))

    {

      den <<= 1;

      bit <<= 1;

    }

  while (bit)

    {

      if (num >= den)

        {

          num -= den;

          res |= bit;

        }

      bit >>= 1;

      den >>= 1;

    }

  if (modwanted)

    return num;

  return res;

}

SINT_TYPE

C3(__div,NAME_MODE,3) (SINT_TYPE a, SINT_TYPE b)

{

  word_type neg = 0;

  SINT_TYPE res;

  if (a < 0)

    {

      a = -a;

      neg = !neg;

    }

  if (b < 0)

    {

      b = -b;

      neg = !neg;

    }

  res = C3(udivmod,NAME_MODE,4) (a, b, 0);

  if (neg)

    res = -res;

  return res;

}

SINT_TYPE

C3(__mod,NAME_MODE,3) (SINT_TYPE a, SINT_TYPE b)

{

  word_type neg = 0;

  SINT_TYPE res;

  if (a < 0)

    {

      a = -a;

      neg = 1;

    }

  if (b < 0)

    b = -b;

  res = C3(udivmod,NAME_MODE,4) (a, b, 1);

  if (neg)

    res = -res;

  return res;

}

UINT_TYPE

C3(__udiv,NAME_MODE,3) (UINT_TYPE a, UINT_TYPE b)

{

  return C3(udivmod,NAME_MODE,4) (a, b, 0);

}

UINT_TYPE

C3(__umod,NAME_MODE,3) (UINT_TYPE a, UINT_TYPE b)

{

  return C3(udivmod,NAME_MODE,4) (a, b, 1);

}