mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-01-31 03:27:39 +00:00
8b33204f37
* third_party: Add libcxxabi Added libcxxabi from LLVM 17.0.6 The library implements the Itanium C++ exception handling ABI. * third_party/libcxxabi: Enable __cxa_thread_atexit Enable `__cxa_thread_atexit` from libcxxabi. `__cxa_thread_atexit_impl` is still implemented by the cosmo libc. The original `__cxa_thread_atexit` has been removed. * third_party/libcxx: Build with exceptions Build libcxx with exceptions enabled. - Removed `_LIBCPP_NO_EXCEPTIONS` from `__config`. - Switched the exception implementation to `libcxxabi`. These two files are taken from the same `libcxx` version as mentioned in `README.cosmo`. - Removed `new_handler_fallback` in favor of `libcxxabi` implementation. - Enable `-fexceptions` and `-frtti` for `libcxx`. - Removed `THIRD_PARTY_LIBCXX` dependency from `libcxxabi` and `libunwind`. These libraries do not use any runtime `libcxx` functions, just headers. * libc: Remove remaining redundant cxa functions - `__cxa_pure_virtual` in `libcxxabi` is also a stub similar to the existing one. - `__cxa_guard_*` from `libcxxabi` is used instead of the ones from Android. Now there should be no more duplicate implementations. `__cxa_thread_atexit_impl`, `__cxa_atexit`, and related supporting functions, are still left to other libraries as in `libcxxabi`. `libcxxabi` is also now added to `cosmopolitan.a` to make up for the removed functions. Affected in-tree libraries (`third_party/double-conversion`) have been updated.
55 lines
1.5 KiB
C++
55 lines
1.5 KiB
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//
|
|
// This file implements the functionality associated with the terminate_handler,
|
|
// unexpected_handler, and new_handler.
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef _CXA_HANDLERS_H
|
|
#define _CXA_HANDLERS_H
|
|
|
|
#include "third_party/libcxxabi/include/__cxxabi_config.h"
|
|
|
|
#include "third_party/libcxx/exception"
|
|
|
|
namespace std
|
|
{
|
|
|
|
_LIBCXXABI_HIDDEN _LIBCXXABI_NORETURN
|
|
void
|
|
__unexpected(unexpected_handler func);
|
|
|
|
_LIBCXXABI_HIDDEN _LIBCXXABI_NORETURN
|
|
void
|
|
__terminate(terminate_handler func) noexcept;
|
|
|
|
} // std
|
|
|
|
extern "C"
|
|
{
|
|
|
|
_LIBCXXABI_DATA_VIS extern void (*__cxa_terminate_handler)();
|
|
_LIBCXXABI_DATA_VIS extern void (*__cxa_unexpected_handler)();
|
|
_LIBCXXABI_DATA_VIS extern void (*__cxa_new_handler)();
|
|
|
|
/*
|
|
|
|
At some point in the future these three symbols will become
|
|
C++11 atomic variables:
|
|
|
|
extern std::atomic<std::terminate_handler> __cxa_terminate_handler;
|
|
extern std::atomic<std::unexpected_handler> __cxa_unexpected_handler;
|
|
extern std::atomic<std::new_handler> __cxa_new_handler;
|
|
|
|
This change will not impact their ABI. But it will allow for a
|
|
portable performance optimization.
|
|
|
|
*/
|
|
|
|
} // extern "C"
|
|
|
|
#endif // _CXA_HANDLERS_H
|