/* Pedantic checking of DWARF files
   Copyright (C) 2008, 2009, 2010, 2011 Red Hat, Inc.
   This file is part of elfutils.

   This file 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 of the License, or
   (at your option) any later version.

   elfutils 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 program.  If not, see <http://www.gnu.org/licenses/>.  */

#ifdef HAVE_CONFIG_H
# include <config.h>
#endif

#include "misc.hh"
#include "messages.hh"
#include <stdarg.h>

bool
address_aligned (uint64_t addr, uint64_t align)
{
  return align < 2 || (addr % align == 0);
}

bool
necessary_alignment (uint64_t start, uint64_t length, uint64_t align)
{
  return address_aligned (start + length, align) && length < align;
}

bool
supported_version (unsigned version,
		   size_t num_supported, locus const &loc, ...)
{
  bool retval = false;
  va_list ap;
  va_start (ap, loc);
  for (size_t i = 0; i < num_supported; ++i)
    {
      unsigned v = va_arg (ap, unsigned);
      if (version == v)
	{
	  retval = true;
	  break;
	}
    }
  va_end (ap);

  if (!retval)
    wr_error (loc) << "unsupported version " << version << ".\n";

  return retval;
}