60 lines · cpp
1//===----------------------------------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//8// This file implements the "Exception Handling APIs"9// https://itanium-cxx-abi.github.io/cxx-abi/abi-eh.html10//11//===----------------------------------------------------------------------===//12 13// Support functions for the no-exceptions libc++ library14 15#include "cxxabi.h"16 17#include <exception> // for std::terminate18#include "cxa_exception.h"19#include "cxa_handlers.h"20 21namespace __cxxabiv1 {22 23extern "C" {24 25void26__cxa_increment_exception_refcount(void *thrown_object) throw() {27 if (thrown_object != nullptr)28 std::terminate();29}30 31void32__cxa_decrement_exception_refcount(void *thrown_object) throw() {33 if (thrown_object != nullptr)34 std::terminate();35}36 37 38void *__cxa_current_primary_exception() throw() { return nullptr; }39 40void41__cxa_rethrow_primary_exception(void* thrown_object) {42 if (thrown_object != nullptr)43 std::terminate();44}45 46bool47__cxa_uncaught_exception() throw() { return false; }48 49unsigned int50__cxa_uncaught_exceptions() throw() { return 0; }51 52} // extern "C"53 54// provide dummy implementations for the 'no exceptions' case.55uint64_t __getExceptionClass (const _Unwind_Exception*) { return 0; }56void __setExceptionClass ( _Unwind_Exception*, uint64_t) {}57bool __isOurExceptionClass(const _Unwind_Exception*) { return false; }58 59} // abi60