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/* Default common target hook functions.

   Copyright (C) 2003, 2004, 2005, 2007, 2008, 2009, 2010, 2011

   Free Software Foundation, 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.

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

along with GCC; see the file COPYING3.  If not see

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

#include "config.h"

#include "system.h"

#include "coretypes.h"

#include "input.h"

#include "tm.h"

#include "common/common-target.h"

#include "common/common-targhooks.h"

/* Determine the exception handling mechanism for the target.  */

enum unwind_info_type

default_except_unwind_info (struct gcc_options *opts ATTRIBUTE_UNUSED)

{

  /* Obey the configure switch to turn on sjlj exceptions.  */

#ifdef CONFIG_SJLJ_EXCEPTIONS

  if (CONFIG_SJLJ_EXCEPTIONS)

    return UI_SJLJ;

#endif

  /* ??? Change all users to the hook, then poison this.  */

#ifdef DWARF2_UNWIND_INFO

  if (DWARF2_UNWIND_INFO)

    return UI_DWARF2;

#endif

  return UI_SJLJ;

}

/* To be used by targets that force dwarf2 unwind enabled.  */

enum unwind_info_type

dwarf2_except_unwind_info (struct gcc_options *opts ATTRIBUTE_UNUSED)

{

  /* Obey the configure switch to turn on sjlj exceptions.  */

#ifdef CONFIG_SJLJ_EXCEPTIONS

  if (CONFIG_SJLJ_EXCEPTIONS)

    return UI_SJLJ;

#endif

  return UI_DWARF2;

}

/* To be used by targets that force sjlj unwind enabled.  */

enum unwind_info_type

sjlj_except_unwind_info (struct gcc_options *opts ATTRIBUTE_UNUSED)

{

  return UI_SJLJ;

}

/* Default version of TARGET_HANDLE_OPTION.  */

bool

default_target_handle_option (struct gcc_options *opts ATTRIBUTE_UNUSED,

                              struct gcc_options *opts_set ATTRIBUTE_UNUSED,

                              const struct cl_decoded_option *decoded ATTRIBUTE_UNUSED,

                              location_t loc ATTRIBUTE_UNUSED)

{

  return true;

}

const struct default_options empty_optimization_table[] =

  {

    { OPT_LEVELS_NONE, 0, NULL, 0 }

  };