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. ARM 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 #ifdef __ARM_EABI__ 45 // The ARM EABI uses the least significant bit of a 32-bit 46 // guard variable. 47 #define _GLIBCXX_GUARD_TEST(x) ((*(x) & 1) != 0) 48 #define _GLIBCXX_GUARD_SET(x) *(x) = 1 49 #define _GLIBCXX_GUARD_BIT 1 50 #define _GLIBCXX_GUARD_PENDING_BIT __guard_test_bit (1, 1) 51 #define _GLIBCXX_GUARD_WAITING_BIT __guard_test_bit (2, 1) 52 typedef int __guard; 53 54 #define _GLIBCXX_GUARD_TEST_AND_ACQUIRE(x) \ 55 ((__atomic_load_n(x, __ATOMIC_ACQUIRE) & 1) != 0) 56 #define _GLIBCXX_GUARD_SET_AND_RELEASE(x) \ 57 __atomic_store_n(x, 1, __ATOMIC_RELEASE) 58 59 // We also want the element size in array cookies. 60 #define _GLIBCXX_ELTSIZE_IN_COOKIE 1 61 62 // __cxa_vec_ctor should return a pointer to the array. 63 typedef void * __cxa_vec_ctor_return_type; 64 #define _GLIBCXX_CXA_VEC_CTOR_RETURN(x) return x 65 // Constructors and destructors return the "this" pointer. 66 typedef void * __cxa_cdtor_return_type; 67 68 #else // __ARM_EABI__ 69 70 // The generic ABI uses the first byte of a 64-bit guard variable. 71 #define _GLIBCXX_GUARD_TEST(x) (*(char *) (x) != 0) 72 #define _GLIBCXX_GUARD_SET(x) *(char *) (x) = 1 73 #define _GLIBCXX_GUARD_BIT __guard_test_bit (0, 1) 74 #define _GLIBCXX_GUARD_PENDING_BIT __guard_test_bit (1, 1) 75 #define _GLIBCXX_GUARD_WAITING_BIT __guard_test_bit (2, 1) 76 __extension__ typedef int __guard __attribute__((mode (__DI__))); 77 78 // __cxa_vec_ctor has void return type. 79 typedef void __cxa_vec_ctor_return_type; 80 #define _GLIBCXX_CXA_VEC_CTOR_RETURN(x) return 81 // Constructors and destructors do not return a value. 82 typedef void __cxa_cdtor_return_type; 83 84 #endif //!__ARM_EABI__ 85 86 #ifdef __cplusplus 87 } 88 } // namespace __cxxabiv1 89 #endif 90 91 #endif 92