1// Control various target specific ABI tweaks. ARM version. 2 3// Copyright (C) 2004, 2006 Free Software Foundation, Inc. 4// 5// This file is part of the GNU ISO C++ Library. This library is free 6// software; you can redistribute it and/or modify it under the 7// terms of the GNU General Public License as published by the 8// Free Software Foundation; either version 2, or (at your option) 9// any later version. 10 11// This library is distributed in the hope that it will be useful, 12// but WITHOUT ANY WARRANTY; without even the implied warranty of 13// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14// GNU General Public License for more details. 15 16// You should have received a copy of the GNU General Public License along 17// with this library; see the file COPYING. If not, write to the Free 18// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 19// USA. 20 21// As a special exception, you may use this file as part of a free software 22// library without restriction. Specifically, if other files instantiate 23// templates or use macros or inline functions from this file, or you compile 24// this file and link it with other files to produce an executable, this 25// file does not by itself cause the resulting executable to be covered by 26// the GNU General Public License. This exception does not however 27// invalidate any other reasons why the executable file might be covered by 28// the GNU General Public License. 29 30#ifndef _CXXABI_TWEAKS_H 31#define _CXXABI_TWEAKS_H 1 32 33#ifdef __cplusplus 34namespace __cxxabiv1 35{ 36 extern "C" 37 { 38#endif 39 40#ifdef __ARM_EABI__ 41 // The ARM EABI uses the least significant bit of a 32-bit 42 // guard variable. */ 43#define _GLIBCXX_GUARD_TEST(x) ((*(x) & 1) != 0) 44#define _GLIBCXX_GUARD_SET(x) *(x) = 1 45 typedef int __guard; 46 47 // We also want the element size in array cookies. 48#define _GLIBCXX_ELTSIZE_IN_COOKIE 1 49 50 // __cxa_vec_ctor should return a pointer to the array. 51 typedef void * __cxa_vec_ctor_return_type; 52#define _GLIBCXX_CXA_VEC_CTOR_RETURN(x) return x 53 // Constructors and destructors return the "this" pointer. 54 typedef void * __cxa_cdtor_return_type; 55 56#else // __ARM_EABI__ 57 58 // The generic ABI uses the first byte of a 64-bit guard variable. 59#define _GLIBCXX_GUARD_TEST(x) (*(char *) (x) != 0) 60#define _GLIBCXX_GUARD_SET(x) *(char *) (x) = 1 61 __extension__ typedef int __guard __attribute__((mode (__DI__))); 62 63 // __cxa_vec_ctor has void return type. 64 typedef void __cxa_vec_ctor_return_type; 65#define _GLIBCXX_CXA_VEC_CTOR_RETURN(x) return 66 // Constructors and destructors do not return a value. 67 typedef void __cxa_cdtor_return_type; 68 69#endif //!__ARM_EABI__ 70 71#ifdef __cplusplus 72 } 73} // namespace __cxxabiv1 74#endif 75 76#endif 77