1 //===------------------------- cxa_exception.cpp --------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 // 9 // This file implements the "Exception Handling APIs" 10 // http://mentorembedded.github.io/cxx-abi/abi-eh.html 11 // 12 //===----------------------------------------------------------------------===// 13 14 // Support functions for the no-exceptions libc++ library 15 16 #include "cxxabi.h" 17 18 #include <exception> // for std::terminate 19 #include "cxa_exception.hpp" 20 #include "cxa_handlers.hpp" 21 22 namespace __cxxabiv1 { 23 24 extern "C" { 25 26 void __cxa_increment_exception_refcount(void * thrown_object)27__cxa_increment_exception_refcount(void *thrown_object) throw() { 28 if (thrown_object != nullptr) 29 std::terminate(); 30 } 31 32 void __cxa_decrement_exception_refcount(void * thrown_object)33__cxa_decrement_exception_refcount(void *thrown_object) throw() { 34 if (thrown_object != nullptr) 35 std::terminate(); 36 } 37 38 __cxa_current_primary_exception()39void *__cxa_current_primary_exception() throw() { return nullptr; } 40 41 void __cxa_rethrow_primary_exception(void * thrown_object)42__cxa_rethrow_primary_exception(void* thrown_object) { 43 if (thrown_object != nullptr) 44 std::terminate(); 45 } 46 47 bool __cxa_uncaught_exception()48__cxa_uncaught_exception() throw() { return false; } 49 50 unsigned int __cxa_uncaught_exceptions()51__cxa_uncaught_exceptions() throw() { return 0; } 52 53 } // extern "C" 54 55 // provide dummy implementations for the 'no exceptions' case. __getExceptionClass(const _Unwind_Exception *)56uint64_t __getExceptionClass (const _Unwind_Exception*) { return 0; } __setExceptionClass(_Unwind_Exception *,uint64_t)57void __setExceptionClass ( _Unwind_Exception*, uint64_t) {} __isOurExceptionClass(const _Unwind_Exception *)58bool __isOurExceptionClass(const _Unwind_Exception*) { return false; } 59 60 } // abi 61