cxxabi_tweaks.h

00001 // Control various target specific ABI tweaks.  Generic version.
00002 
00003 // Copyright (C) 2004 Free Software Foundation, Inc.
00004 //
00005 // This file is part of the GNU ISO C++ Library.  This library is free
00006 // software; you can redistribute it and/or modify it under the
00007 // terms of the GNU General Public License as published by the
00008 // Free Software Foundation; either version 2, or (at your option)
00009 // any later version.
00010 
00011 // This library is distributed in the hope that it will be useful,
00012 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00013 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00014 // GNU General Public License for more details.
00015 
00016 // You should have received a copy of the GNU General Public License along
00017 // with this library; see the file COPYING.  If not, write to the Free
00018 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
00019 // USA.
00020 
00021 // As a special exception, you may use this file as part of a free software
00022 // library without restriction.  Specifically, if other files instantiate
00023 // templates or use macros or inline functions from this file, or you compile
00024 // this file and link it with other files to produce an executable, this
00025 // file does not by itself cause the resulting executable to be covered by
00026 // the GNU General Public License.  This exception does not however
00027 // invalidate any other reasons why the executable file might be covered by
00028 // the GNU General Public License.
00029 
00030 #ifndef _CXXABI_TWEAKS_H
00031 #define _CXXABI_TWEAKS_H 1
00032 
00033 #ifdef __cplusplus
00034 namespace __cxxabiv1
00035 {
00036 #endif
00037 
00038   // The generic ABI uses the first byte of a 64-bit guard variable.
00039 #define _GLIBCXX_GUARD_TEST(x) (*(char *) (x) != 0)
00040 #define _GLIBCXX_GUARD_SET(x) *(char *) (x) = 1
00041   __extension__ typedef int __guard __attribute__((mode (__DI__)));
00042 
00043   // __cxa_vec_ctor has void return type.
00044   typedef void __cxa_vec_ctor_return_type;
00045 #define _GLIBCXX_CXA_VEC_CTOR_RETURN(x) return
00046   // Constructors and destructors do not return a value.
00047   typedef void __cxa_cdtor_return_type;
00048 
00049 #ifdef __cplusplus
00050 } // namespace __cxxabiv1
00051 #endif
00052 
00053 #endif // __cxxabiv1

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