1*38fd1498Szrj // Control various target specific ABI tweaks. Generic version. 2*38fd1498Szrj 3*38fd1498Szrj // Copyright (C) 2004-2018 Free Software Foundation, Inc. 4*38fd1498Szrj // 5*38fd1498Szrj // This file is part of the GNU ISO C++ Library. This library is free 6*38fd1498Szrj // software; you can redistribute it and/or modify it under the 7*38fd1498Szrj // terms of the GNU General Public License as published by the 8*38fd1498Szrj // Free Software Foundation; either version 3, or (at your option) 9*38fd1498Szrj // any later version. 10*38fd1498Szrj 11*38fd1498Szrj // This library is distributed in the hope that it will be useful, 12*38fd1498Szrj // but WITHOUT ANY WARRANTY; without even the implied warranty of 13*38fd1498Szrj // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14*38fd1498Szrj // GNU General Public License for more details. 15*38fd1498Szrj 16*38fd1498Szrj // Under Section 7 of GPL version 3, you are granted additional 17*38fd1498Szrj // permissions described in the GCC Runtime Library Exception, version 18*38fd1498Szrj // 3.1, as published by the Free Software Foundation. 19*38fd1498Szrj 20*38fd1498Szrj // You should have received a copy of the GNU General Public License and 21*38fd1498Szrj // a copy of the GCC Runtime Library Exception along with this program; 22*38fd1498Szrj // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 23*38fd1498Szrj // <http://www.gnu.org/licenses/>. 24*38fd1498Szrj 25*38fd1498Szrj /** @file bits/cxxabi_tweaks.h 26*38fd1498Szrj * This is an internal header file, included by other library headers. 27*38fd1498Szrj * Do not attempt to use it directly. @headername{cxxabi.h} 28*38fd1498Szrj */ 29*38fd1498Szrj 30*38fd1498Szrj #ifndef _CXXABI_TWEAKS_H 31*38fd1498Szrj #define _CXXABI_TWEAKS_H 1 32*38fd1498Szrj 33*38fd1498Szrj #ifdef __cplusplus 34*38fd1498Szrj namespace __cxxabiv1 35*38fd1498Szrj { 36*38fd1498Szrj extern "C" 37*38fd1498Szrj { 38*38fd1498Szrj #endif 39*38fd1498Szrj 40*38fd1498Szrj // The generic ABI uses the first byte of a 64-bit guard variable. 41*38fd1498Szrj #define _GLIBCXX_GUARD_TEST(x) (*(char *) (x) != 0) 42*38fd1498Szrj #define _GLIBCXX_GUARD_SET(x) *(char *) (x) = 1 43*38fd1498Szrj #define _GLIBCXX_GUARD_BIT __guard_test_bit (0, 1) 44*38fd1498Szrj #define _GLIBCXX_GUARD_PENDING_BIT __guard_test_bit (1, 1) 45*38fd1498Szrj #define _GLIBCXX_GUARD_WAITING_BIT __guard_test_bit (2, 1) 46*38fd1498Szrj __extension__ typedef int __guard __attribute__((mode (__DI__))); 47*38fd1498Szrj 48*38fd1498Szrj // __cxa_vec_ctor has void return type. 49*38fd1498Szrj typedef void __cxa_vec_ctor_return_type; 50*38fd1498Szrj #define _GLIBCXX_CXA_VEC_CTOR_RETURN(x) return 51*38fd1498Szrj // Constructors and destructors do not return a value. 52*38fd1498Szrj typedef void __cxa_cdtor_return_type; 53*38fd1498Szrj 54*38fd1498Szrj #ifdef __cplusplus 55*38fd1498Szrj } 56*38fd1498Szrj } // namespace __cxxabiv1 57*38fd1498Szrj #endif 58*38fd1498Szrj 59*38fd1498Szrj #endif 60