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/* Default common target hook functions.
Copyright (C) 2003-2022 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 "tm.h"
#include "common/common-target.h"
#include "common/common-targhooks.h"
#include "opts.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;
}
/* Default version of TARGET_GET_VALID_OPTION_VALUES. */
vec<const char *>
default_get_valid_option_values (int, const char *)
{
return vec<const char *> ();
}
const struct default_options empty_optimization_table[] =
{
{ OPT_LEVELS_NONE, 0, NULL, 0 }
};
/* Default version of TARGET_COMPUTE_MULTILIB. */
const char *
default_compute_multilib(
const struct switchstr *,
int,
const char *multilib,
const char *,
const char *,
const char *,
const char *,
const char *)
{
return multilib;
}
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