Edit File: cxxabi_tweaks.h
// Control various target specific ABI tweaks. Generic version. // Copyright (C) 2004-2018 Free Software Foundation, Inc. // // This file is part of the GNU ISO C++ Library. This library 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. // This library 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. // Under Section 7 of GPL version 3, you are granted additional // permissions described in the GCC Runtime Library Exception, version // 3.1, as published by the Free Software Foundation. // You should have received a copy of the GNU General Public License and // a copy of the GCC Runtime Library Exception along with this program; // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see // <http://www.gnu.org/licenses/>. /** @file bits/cxxabi_tweaks.h * This is an internal header file, included by other library headers. * Do not attempt to use it directly. @headername{cxxabi.h} */ #ifndef _CXXABI_TWEAKS_H #define _CXXABI_TWEAKS_H 1 #ifdef __cplusplus namespace __cxxabiv1 { extern "C" { #endif // The generic ABI uses the first byte of a 64-bit guard variable. #define _GLIBCXX_GUARD_TEST(x) (*(char *) (x) != 0) #define _GLIBCXX_GUARD_SET(x) *(char *) (x) = 1 #define _GLIBCXX_GUARD_BIT __guard_test_bit (0, 1) #define _GLIBCXX_GUARD_PENDING_BIT __guard_test_bit (1, 1) #define _GLIBCXX_GUARD_WAITING_BIT __guard_test_bit (2, 1) __extension__ typedef int __guard __attribute__((mode (__DI__))); // __cxa_vec_ctor has void return type. typedef void __cxa_vec_ctor_return_type; #define _GLIBCXX_CXA_VEC_CTOR_RETURN(x) return // Constructors and destructors do not return a value. typedef void __cxa_cdtor_return_type; #ifdef __cplusplus } } // namespace __cxxabiv1 #endif #endif
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