forked from OSchip/llvm-project
120 lines
3.9 KiB
C++
120 lines
3.9 KiB
C++
//===------------------------- cxa_exception.h ----------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//
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// This file implements the "Exception Handling APIs"
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// https://itanium-cxx-abi.github.io/cxx-abi/abi-eh.html
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//
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//===----------------------------------------------------------------------===//
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#ifndef _CXA_EXCEPTION_H
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#define _CXA_EXCEPTION_H
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#include <exception> // for std::unexpected_handler and std::terminate_handler
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#include "cxxabi.h"
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#include "unwind.h"
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namespace __cxxabiv1 {
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static const uint64_t kOurExceptionClass = 0x434C4E47432B2B00; // CLNGC++\0
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static const uint64_t kOurDependentExceptionClass = 0x434C4E47432B2B01; // CLNGC++\1
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static const uint64_t get_vendor_and_language = 0xFFFFFFFFFFFFFF00; // mask for CLNGC++
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_LIBCXXABI_HIDDEN uint64_t __getExceptionClass (const _Unwind_Exception*);
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_LIBCXXABI_HIDDEN void __setExceptionClass ( _Unwind_Exception*, uint64_t);
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_LIBCXXABI_HIDDEN bool __isOurExceptionClass(const _Unwind_Exception*);
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struct _LIBCXXABI_HIDDEN __cxa_exception {
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#if defined(__LP64__) || defined(_LIBCXXABI_ARM_EHABI)
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// This is a new field to support C++ 0x exception_ptr.
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// For binary compatibility it is at the start of this
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// struct which is prepended to the object thrown in
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// __cxa_allocate_exception.
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size_t referenceCount;
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#endif
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// Manage the exception object itself.
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std::type_info *exceptionType;
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void (*exceptionDestructor)(void *);
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std::unexpected_handler unexpectedHandler;
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std::terminate_handler terminateHandler;
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__cxa_exception *nextException;
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int handlerCount;
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#if defined(_LIBCXXABI_ARM_EHABI)
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__cxa_exception* nextPropagatingException;
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int propagationCount;
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#else
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int handlerSwitchValue;
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const unsigned char *actionRecord;
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const unsigned char *languageSpecificData;
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void *catchTemp;
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void *adjustedPtr;
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#endif
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#if !defined(__LP64__) && !defined(_LIBCXXABI_ARM_EHABI)
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// This is a new field to support C++ 0x exception_ptr.
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// For binary compatibility it is placed where the compiler
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// previously adding padded to 64-bit align unwindHeader.
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size_t referenceCount;
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#endif
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_Unwind_Exception unwindHeader;
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};
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// http://sourcery.mentor.com/archives/cxx-abi-dev/msg01924.html
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// The layout of this structure MUST match the layout of __cxa_exception, with
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// primaryException instead of referenceCount.
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struct _LIBCXXABI_HIDDEN __cxa_dependent_exception {
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#if defined(__LP64__) || defined(_LIBCXXABI_ARM_EHABI)
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void* primaryException;
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#endif
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std::type_info *exceptionType;
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void (*exceptionDestructor)(void *);
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std::unexpected_handler unexpectedHandler;
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std::terminate_handler terminateHandler;
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__cxa_exception *nextException;
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int handlerCount;
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#if defined(_LIBCXXABI_ARM_EHABI)
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__cxa_exception* nextPropagatingException;
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int propagationCount;
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#else
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int handlerSwitchValue;
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const unsigned char *actionRecord;
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const unsigned char *languageSpecificData;
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void * catchTemp;
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void *adjustedPtr;
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#endif
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#if !defined(__LP64__) && !defined(_LIBCXXABI_ARM_EHABI)
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void* primaryException;
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#endif
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_Unwind_Exception unwindHeader;
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};
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struct _LIBCXXABI_HIDDEN __cxa_eh_globals {
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__cxa_exception * caughtExceptions;
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unsigned int uncaughtExceptions;
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#if defined(_LIBCXXABI_ARM_EHABI)
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__cxa_exception* propagatingExceptions;
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#endif
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};
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extern "C" _LIBCXXABI_FUNC_VIS __cxa_eh_globals * __cxa_get_globals ();
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extern "C" _LIBCXXABI_FUNC_VIS __cxa_eh_globals * __cxa_get_globals_fast ();
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extern "C" _LIBCXXABI_FUNC_VIS void * __cxa_allocate_dependent_exception ();
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extern "C" _LIBCXXABI_FUNC_VIS void __cxa_free_dependent_exception (void * dependent_exception);
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} // namespace __cxxabiv1
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#endif // _CXA_EXCEPTION_H
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