Line data    Source code

       1              : /* Default common target hook functions.
       2              :    Copyright (C) 2003-2026 Free Software Foundation, Inc.
       3              : 
       4              : This file is part of GCC.
       5              : 
       6              : GCC is free software; you can redistribute it and/or modify it under
       7              : the terms of the GNU General Public License as published by the Free
       8              : Software Foundation; either version 3, or (at your option) any later
       9              : version.
      10              : 
      11              : GCC is distributed in the hope that it will be useful, but WITHOUT ANY
      12              : WARRANTY; without even the implied warranty of MERCHANTABILITY or
      13              : FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
      14              : for more details.
      15              : 
      16              : You should have received a copy of the GNU General Public License
      17              : along with GCC; see the file COPYING3.  If not see
      18              : <http://www.gnu.org/licenses/>.  */
      19              : 
      20              : #include "config.h"
      21              : #include "system.h"
      22              : #include "coretypes.h"
      23              : #include "tm.h"
      24              : #include "common/common-target.h"
      25              : #include "common/common-targhooks.h"
      26              : #include "opts.h"
      27              : 
      28              : /* Determine the exception handling mechanism for the target.  */
      29              : 
      30              : enum unwind_info_type
      31            0 : default_except_unwind_info (struct gcc_options *opts ATTRIBUTE_UNUSED)
      32              : {
      33              :   /* Obey the configure switch to turn on sjlj exceptions.  */
      34              : #ifdef CONFIG_SJLJ_EXCEPTIONS
      35              :   if (CONFIG_SJLJ_EXCEPTIONS)
      36              :     return UI_SJLJ;
      37              : #endif
      38              : 
      39              :   /* ??? Change all users to the hook, then poison this.  */
      40              : #ifdef DWARF2_UNWIND_INFO
      41            0 :   if (DWARF2_UNWIND_INFO)
      42            0 :     return UI_DWARF2;
      43              : #endif
      44              : 
      45              :   return UI_SJLJ;
      46              : }
      47              : 
      48              : /* To be used by targets that force dwarf2 unwind enabled.  */
      49              : 
      50              : enum unwind_info_type
      51            0 : dwarf2_except_unwind_info (struct gcc_options *opts ATTRIBUTE_UNUSED)
      52              : {
      53              :   /* Obey the configure switch to turn on sjlj exceptions.  */
      54              : #ifdef CONFIG_SJLJ_EXCEPTIONS
      55              :   if (CONFIG_SJLJ_EXCEPTIONS)
      56              :     return UI_SJLJ;
      57              : #endif
      58              : 
      59            0 :   return UI_DWARF2;
      60              : }
      61              : 
      62              : /* To be used by targets that force sjlj unwind enabled.  */
      63              : 
      64              : enum unwind_info_type
      65            0 : sjlj_except_unwind_info (struct gcc_options *opts ATTRIBUTE_UNUSED)
      66              : {
      67            0 :   return UI_SJLJ;
      68              : }
      69              : 
      70              : /* Default version of TARGET_HANDLE_OPTION.  */
      71              : 
      72              : bool
      73            0 : default_target_handle_option (struct gcc_options *opts ATTRIBUTE_UNUSED,
      74              :                               struct gcc_options *opts_set ATTRIBUTE_UNUSED,
      75              :                               const struct cl_decoded_option *decoded ATTRIBUTE_UNUSED,
      76              :                               location_t loc ATTRIBUTE_UNUSED)
      77              : {
      78            0 :   return true;
      79              : }
      80              : 
      81              : /* Default version of TARGET_GET_VALID_OPTION_VALUES.  */
      82              : 
      83              : vec<const char *>
      84            0 : default_get_valid_option_values (int, const char *)
      85              : {
      86            0 :   return vec<const char *> ();
      87              : }
      88              : 
      89              : const struct default_options empty_optimization_table[] =
      90              :   {
      91              :     { OPT_LEVELS_NONE, 0, NULL, 0 }
      92              :   };
      93              : 
      94              : /* Default version of TARGET_COMPUTE_MULTILIB.  */
      95              : const char *
      96       293698 : default_compute_multilib(
      97              :   const struct switchstr *,
      98              :   int,
      99              :   const char *multilib,
     100              :   const char *,
     101              :   const char *,
     102              :   const char *,
     103              :   const char *,
     104              :   const char *)
     105              : {
     106       293698 :   return multilib;
     107              : }