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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 }
  };