Differential D19566 Diff 55000 contrib/libcxxabi/include/cxxabi.h

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contrib/libcxxabi/include/cxxabi.h

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				//===--------------------------- cxxabi.h ---------------------------------===//
				//
				// 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
				//
				//===----------------------------------------------------------------------===//

				#ifndef __CXXABI_H
				#define __CXXABI_H

				/*
				* This header provides the interface to the C++ ABI as defined at:
				* http://www.codesourcery.com/cxx-abi/
				*/

				#include <stddef.h>
				#include <stdint.h>

				#include <__cxxabi_config.h>

				#define _LIBCPPABI_VERSION 1002
				#define _LIBCXXABI_NORETURN __attribute__((noreturn))

				#ifdef __cplusplus

				namespace std {
				#if defined(_WIN32)
				class _LIBCXXABI_TYPE_VIS type_info; // forward declaration
				#else
				class type_info; // forward declaration
				#endif
				}


				// runtime routines use C calling conventions, but are in __cxxabiv1 namespace
				namespace __cxxabiv1 {
				extern "C" {

				// 2.4.2 Allocating the Exception Object
				extern _LIBCXXABI_FUNC_VIS void *
				__cxa_allocate_exception(size_t thrown_size) throw();
				extern _LIBCXXABI_FUNC_VIS void
				__cxa_free_exception(void *thrown_exception) throw();

				// 2.4.3 Throwing the Exception Object
				extern _LIBCXXABI_FUNC_VIS _LIBCXXABI_NORETURN void
				__cxa_throw(void thrown_exception, std::type_info tinfo,
				void (dest)(void ));

				// 2.5.3 Exception Handlers
				extern _LIBCXXABI_FUNC_VIS void *
				__cxa_get_exception_ptr(void *exceptionObject) throw();
				extern _LIBCXXABI_FUNC_VIS void *
				__cxa_begin_catch(void *exceptionObject) throw();
				extern _LIBCXXABI_FUNC_VIS void __cxa_end_catch();
				#if defined(_LIBCXXABI_ARM_EHABI)
				extern _LIBCXXABI_FUNC_VIS bool
				__cxa_begin_cleanup(void *exceptionObject) throw();
				extern _LIBCXXABI_FUNC_VIS void __cxa_end_cleanup();
				#endif
				extern _LIBCXXABI_FUNC_VIS std::type_info *__cxa_current_exception_type();

				// 2.5.4 Rethrowing Exceptions
				extern _LIBCXXABI_FUNC_VIS _LIBCXXABI_NORETURN void __cxa_rethrow();

				// 2.6 Auxiliary Runtime APIs
				extern _LIBCXXABI_FUNC_VIS _LIBCXXABI_NORETURN void __cxa_bad_cast(void);
				extern _LIBCXXABI_FUNC_VIS _LIBCXXABI_NORETURN void __cxa_bad_typeid(void);
				extern _LIBCXXABI_FUNC_VIS _LIBCXXABI_NORETURN void
				__cxa_throw_bad_array_new_length(void);

				// 3.2.6 Pure Virtual Function API
				extern _LIBCXXABI_FUNC_VIS _LIBCXXABI_NORETURN void __cxa_pure_virtual(void);

				// 3.2.7 Deleted Virtual Function API
				extern _LIBCXXABI_FUNC_VIS _LIBCXXABI_NORETURN void __cxa_deleted_virtual(void);

				// 3.3.2 One-time Construction API
				#ifdef __arm__
				extern _LIBCXXABI_FUNC_VIS int __cxa_guard_acquire(uint32_t *);
				extern _LIBCXXABI_FUNC_VIS void __cxa_guard_release(uint32_t *);
				extern _LIBCXXABI_FUNC_VIS void __cxa_guard_abort(uint32_t *);
				#else
				extern _LIBCXXABI_FUNC_VIS int __cxa_guard_acquire(uint64_t *);
				extern _LIBCXXABI_FUNC_VIS void __cxa_guard_release(uint64_t *);
				extern _LIBCXXABI_FUNC_VIS void __cxa_guard_abort(uint64_t *);
				#endif

				// 3.3.3 Array Construction and Destruction API
				extern _LIBCXXABI_FUNC_VIS void *
				__cxa_vec_new(size_t element_count, size_t element_size, size_t padding_size,
				void (constructor)(void ), void (destructor)(void ));

				extern _LIBCXXABI_FUNC_VIS void *
				__cxa_vec_new2(size_t element_count, size_t element_size, size_t padding_size,
				void (constructor)(void ), void (destructor)(void ),
				void (alloc)(size_t), void (dealloc)(void ));

				extern _LIBCXXABI_FUNC_VIS void *
				__cxa_vec_new3(size_t element_count, size_t element_size, size_t padding_size,
				void (constructor)(void ), void (destructor)(void ),
				void (alloc)(size_t), void (dealloc)(void , size_t));

				extern _LIBCXXABI_FUNC_VIS void
				__cxa_vec_ctor(void *array_address, size_t element_count, size_t element_size,
				void (constructor)(void ), void (destructor)(void ));

				extern _LIBCXXABI_FUNC_VIS void __cxa_vec_dtor(void *array_address,
				size_t element_count,
				size_t element_size,
				void (destructor)(void ));

				extern _LIBCXXABI_FUNC_VIS void __cxa_vec_cleanup(void *array_address,
				size_t element_count,
				size_t element_size,
				void (destructor)(void ));

				extern _LIBCXXABI_FUNC_VIS void __cxa_vec_delete(void *array_address,
				size_t element_size,
				size_t padding_size,
				void (destructor)(void ));

				extern _LIBCXXABI_FUNC_VIS void
				__cxa_vec_delete2(void *array_address, size_t element_size, size_t padding_size,
				void (destructor)(void ), void (dealloc)(void ));

				extern _LIBCXXABI_FUNC_VIS void
				__cxa_vec_delete3(void *__array_address, size_t element_size,
				size_t padding_size, void (destructor)(void ),
				void (dealloc)(void , size_t));

				extern _LIBCXXABI_FUNC_VIS void
				__cxa_vec_cctor(void dest_array, void src_array, size_t element_count,
				size_t element_size, void (constructor)(void , void *),
				void (destructor)(void ));

				// 3.3.5.3 Runtime API
				extern _LIBCXXABI_FUNC_VIS int __cxa_atexit(void (f)(void ), void *p,
				void *d);
				extern _LIBCXXABI_FUNC_VIS int __cxa_finalize(void *);

				// 3.4 Demangler API
				extern _LIBCXXABI_FUNC_VIS char __cxa_demangle(const char mangled_name,
				char *output_buffer,
				size_t length, int status);

				// Apple additions to support C++ 0x exception_ptr class
				// These are primitives to wrap a smart pointer around an exception object
				extern _LIBCXXABI_FUNC_VIS void *__cxa_current_primary_exception() throw();
				extern _LIBCXXABI_FUNC_VIS void
				__cxa_rethrow_primary_exception(void *primary_exception);
				extern _LIBCXXABI_FUNC_VIS void
				__cxa_increment_exception_refcount(void *primary_exception) throw();
				extern _LIBCXXABI_FUNC_VIS void
				__cxa_decrement_exception_refcount(void *primary_exception) throw();

				// Apple extension to support std::uncaught_exception()
				extern _LIBCXXABI_FUNC_VIS bool __cxa_uncaught_exception() throw();
				extern _LIBCXXABI_FUNC_VIS unsigned int __cxa_uncaught_exceptions() throw();

				#if defined(__linux__) \|\| defined(__Fuchsia__)
				// Linux and Fuchsia TLS support. Not yet an official part of the Itanium ABI.
				// https://sourceware.org/glibc/wiki/Destructor%20support%20for%20thread_local%20variables
				extern _LIBCXXABI_FUNC_VIS int __cxa_thread_atexit(void ()(void ), void *,
				void *) throw();
				#endif

				} // extern "C"
				} // namespace __cxxabiv1

				namespace abi = __cxxabiv1;

				#endif // __cplusplus

				#endif // __CXXABI_H