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      1 /* This file is automatically generated.  DO NOT EDIT! */
      2 /* Generated from: NetBSD: mknative-gcc,v 1.117 2023/07/31 01:48:37 mrg Exp  */
      3 /* Generated from: NetBSD: mknative.common,v 1.16 2018/04/15 15:13:37 christos Exp  */
      4 
      5 // Control various target specific ABI tweaks.  Generic version.
      6 
      7 // Copyright (C) 2004-2022 Free Software Foundation, Inc.
      8 //
      9 // This file is part of the GNU ISO C++ Library.  This library is free
     10 // software; you can redistribute it and/or modify it under the
     11 // terms of the GNU General Public License as published by the
     12 // Free Software Foundation; either version 3, or (at your option)
     13 // any later version.
     14 
     15 // This library is distributed in the hope that it will be useful,
     16 // but WITHOUT ANY WARRANTY; without even the implied warranty of
     17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     18 // GNU General Public License for more details.
     19 
     20 // Under Section 7 of GPL version 3, you are granted additional
     21 // permissions described in the GCC Runtime Library Exception, version
     22 // 3.1, as published by the Free Software Foundation.
     23 
     24 // You should have received a copy of the GNU General Public License and
     25 // a copy of the GCC Runtime Library Exception along with this program;
     26 // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
     27 // <http://www.gnu.org/licenses/>.
     28 
     29 /** @file bits/cxxabi_tweaks.h
     30  *  This is an internal header file, included by other library headers.
     31  *  Do not attempt to use it directly. @headername{cxxabi.h}
     32  */
     33 
     34 #ifndef _CXXABI_TWEAKS_H
     35 #define _CXXABI_TWEAKS_H 1
     36 
     37 #ifdef __cplusplus
     38 namespace __cxxabiv1
     39 {
     40   extern "C"
     41   {
     42 #endif
     43 
     44   // The generic ABI uses the first byte of a 64-bit guard variable.
     45 #define _GLIBCXX_GUARD_TEST(x) (*(char *) (x) != 0)
     46 #define _GLIBCXX_GUARD_SET(x) *(char *) (x) = 1
     47 #define _GLIBCXX_GUARD_BIT __guard_test_bit (0, 1)
     48 #define _GLIBCXX_GUARD_PENDING_BIT __guard_test_bit (1, 1)
     49 #define _GLIBCXX_GUARD_WAITING_BIT __guard_test_bit (2, 1)
     50   __extension__ typedef int __guard __attribute__((mode (__DI__)));
     51 
     52   // __cxa_vec_ctor has void return type.
     53   typedef void __cxa_vec_ctor_return_type;
     54 #define _GLIBCXX_CXA_VEC_CTOR_RETURN(x) return
     55   // Constructors and destructors do not return a value.
     56   typedef void __cxa_cdtor_return_type;
     57 
     58 #ifdef __cplusplus
     59   }
     60 } // namespace __cxxabiv1
     61 #endif
     62 
     63 #endif
     64