//===----------------------------------------------------------------------===// // // 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 #include #include <__cxxabi_config.h> #define _LIBCPPABI_VERSION 15000 #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) throw(); extern _LIBCXXABI_FUNC_VIS void __cxa_free_exception(void *thrown_exception) throw(); // 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*)) throw(); #else __cxa_init_primary_exception(void* object, std::type_info* tinfo, void(_LIBCXXABI_DTOR_FUNC* dest)(void*)) throw(); #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) 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 #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() 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