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Diffstat (limited to 'third_party/libcxx/include/c++/v1/cxxabi.h')
| -rw-r--r-- | third_party/libcxx/include/c++/v1/cxxabi.h | 197 |
1 files changed, 197 insertions, 0 deletions
diff --git a/third_party/libcxx/include/c++/v1/cxxabi.h b/third_party/libcxx/include/c++/v1/cxxabi.h new file mode 100644 index 0000000..2874d14 --- /dev/null +++ b/third_party/libcxx/include/c++/v1/cxxabi.h @@ -0,0 +1,197 @@ +//===----------------------------------------------------------------------===// +// +// 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: + * https://itanium-cxx-abi.github.io/cxx-abi/ + */ + +#include <stddef.h> +#include <stdint.h> + +#include <__cxxabi_config.h> + +#define _LIBCPPABI_VERSION 230000 +#define _LIBCXXABI_NORETURN __attribute__((noreturn)) +#define _LIBCXXABI_ALWAYS_COLD __attribute__((cold)) + +#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 { + +struct __cxa_exception; + +extern "C" { + +// 2.4.2 Allocating the Exception Object +extern _LIBCXXABI_FUNC_VIS void * +__cxa_allocate_exception(size_t thrown_size) _LIBCXXABI_NOEXCEPT; +extern _LIBCXXABI_FUNC_VIS void +__cxa_free_exception(void *thrown_exception) _LIBCXXABI_NOEXCEPT; +// This function is an LLVM extension, which mirrors the same extension in libsupc++ and libcxxrt +extern _LIBCXXABI_FUNC_VIS __cxa_exception* +#ifdef __wasm__ +// In Wasm, a destructor returns its argument +__cxa_init_primary_exception(void* object, std::type_info* tinfo, void*(_LIBCXXABI_DTOR_FUNC* dest)(void*)) _LIBCXXABI_NOEXCEPT; +#else +__cxa_init_primary_exception(void* object, std::type_info* tinfo, void(_LIBCXXABI_DTOR_FUNC* dest)(void*)) _LIBCXXABI_NOEXCEPT; +#endif + +// 2.4.3 Throwing the Exception Object +extern _LIBCXXABI_FUNC_VIS _LIBCXXABI_NORETURN void +__cxa_throw(void *thrown_exception, std::type_info *tinfo, +#ifdef __wasm__ + void *(_LIBCXXABI_DTOR_FUNC *dest)(void *)); +#else + void (_LIBCXXABI_DTOR_FUNC *dest)(void *)); +#endif + +// 2.5.3 Exception Handlers +extern _LIBCXXABI_FUNC_VIS void * +__cxa_get_exception_ptr(void *exceptionObject) _LIBCXXABI_NOEXCEPT; +extern _LIBCXXABI_FUNC_VIS void * +__cxa_begin_catch(void *exceptionObject) _LIBCXXABI_NOEXCEPT; +extern _LIBCXXABI_FUNC_VIS void __cxa_end_catch(); +#if defined(_LIBCXXABI_ARM_EHABI) +extern _LIBCXXABI_FUNC_VIS bool +__cxa_begin_cleanup(void *exceptionObject) _LIBCXXABI_NOEXCEPT; +extern _LIBCXXABI_FUNC_VIS void __cxa_end_cleanup(); +#endif +extern _LIBCXXABI_FUNC_VIS std::type_info *__cxa_current_exception_type(); + +// GNU extension +// Calls `terminate` with the current exception being caught. This function is used by GCC when a `noexcept` function +// throws an exception inside a try/catch block and doesn't catch it. +extern _LIBCXXABI_FUNC_VIS _LIBCXXABI_NORETURN void __cxa_call_terminate(void*) _LIBCXXABI_NOEXCEPT; + +// 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 +#if defined(_LIBCXXABI_GUARD_ABI_ARM) +extern _LIBCXXABI_FUNC_VIS _LIBCXXABI_ALWAYS_COLD int __cxa_guard_acquire(uint32_t *); +extern _LIBCXXABI_FUNC_VIS _LIBCXXABI_ALWAYS_COLD void __cxa_guard_release(uint32_t *); +extern _LIBCXXABI_FUNC_VIS _LIBCXXABI_ALWAYS_COLD void __cxa_guard_abort(uint32_t *); +#else +extern _LIBCXXABI_FUNC_VIS _LIBCXXABI_ALWAYS_COLD int __cxa_guard_acquire(uint64_t *); +extern _LIBCXXABI_FUNC_VIS _LIBCXXABI_ALWAYS_COLD void __cxa_guard_release(uint64_t *); +extern _LIBCXXABI_FUNC_VIS _LIBCXXABI_ALWAYS_COLD 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 +// These functions are part of the C++ ABI, but they are not defined in libc++abi: +// int __cxa_atexit(void (*)(void *), void *, void *); +// void __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() _LIBCXXABI_NOEXCEPT; +extern _LIBCXXABI_FUNC_VIS void +__cxa_rethrow_primary_exception(void *primary_exception); +extern _LIBCXXABI_FUNC_VIS void +__cxa_increment_exception_refcount(void *primary_exception) _LIBCXXABI_NOEXCEPT; +extern _LIBCXXABI_FUNC_VIS void +__cxa_decrement_exception_refcount(void *primary_exception) _LIBCXXABI_NOEXCEPT; + +// Apple extension to support std::uncaught_exception() +extern _LIBCXXABI_FUNC_VIS bool __cxa_uncaught_exception() _LIBCXXABI_NOEXCEPT; +extern _LIBCXXABI_FUNC_VIS unsigned int __cxa_uncaught_exceptions() _LIBCXXABI_NOEXCEPT; + +#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 *) _LIBCXXABI_NOEXCEPT; +#endif + +} // extern "C" +} // namespace __cxxabiv1 + +namespace abi = __cxxabiv1; + +#endif // __cplusplus + +#endif // __CXXABI_H |