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// Control various target specific ABI tweaks. Generic version. |
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// Copyright (C) 2004-2021 Free Software Foundation, Inc. |
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// |
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// This file is part of the GNU ISO C++ Library. This library is free |
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// software; you can redistribute it and/or modify it under the |
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// terms of the GNU General Public License as published by the |
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// Free Software Foundation; either version 3, or (at your option) |
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// any later version. |
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|
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// This library is distributed in the hope that it will be useful, |
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// but WITHOUT ANY WARRANTY; without even the implied warranty of |
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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// GNU General Public License for more details. |
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|
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// Under Section 7 of GPL version 3, you are granted additional |
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// permissions described in the GCC Runtime Library Exception, version |
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// 3.1, as published by the Free Software Foundation. |
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|
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// You should have received a copy of the GNU General Public License and |
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// a copy of the GCC Runtime Library Exception along with this program; |
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// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
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// <http://www.gnu.org/licenses/>. |
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|
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/** @file bits/cxxabi_tweaks.h |
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* This is an internal header file, included by other library headers. |
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* Do not attempt to use it directly. @headername{cxxabi.h} |
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*/ |
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|
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#ifndef _CXXABI_TWEAKS_H |
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#define _CXXABI_TWEAKS_H 1 |
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|
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#ifdef __cplusplus |
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namespace __cxxabiv1 |
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{ |
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extern "C" |
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{ |
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#endif |
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|
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// The generic ABI uses the first byte of a 64-bit guard variable. |
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#define _GLIBCXX_GUARD_TEST(x) (*(char *) (x) != 0) |
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#define _GLIBCXX_GUARD_SET(x) *(char *) (x) = 1 |
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#define _GLIBCXX_GUARD_BIT __guard_test_bit (0, 1) |
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#define _GLIBCXX_GUARD_PENDING_BIT __guard_test_bit (1, 1) |
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#define _GLIBCXX_GUARD_WAITING_BIT __guard_test_bit (2, 1) |
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__extension__ typedef int __guard __attribute__((mode (__DI__))); |
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|
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// __cxa_vec_ctor has void return type. |
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typedef void __cxa_vec_ctor_return_type; |
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#define _GLIBCXX_CXA_VEC_CTOR_RETURN(x) return |
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// Constructors and destructors do not return a value. |
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typedef void __cxa_cdtor_return_type; |
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|
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#ifdef __cplusplus |
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} |
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} // namespace __cxxabiv1 |
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#endif |
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|
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#endif |
