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| 1 //===------------------------- cxa_exception.hpp --------------------------===// |
| 2 // |
| 3 // The LLVM Compiler Infrastructure |
| 4 // |
| 5 // This file is dual licensed under the MIT and the University of Illinois Open |
| 6 // Source Licenses. See LICENSE.TXT for details. |
| 7 // |
| 8 // |
| 9 // This file implements the "Exception Handling APIs" |
| 10 // http://www.codesourcery.com/public/cxx-abi/abi-eh.html |
| 11 // |
| 12 //===----------------------------------------------------------------------===// |
| 13 |
| 14 #ifndef _CXA_EXCEPTION_H |
| 15 #define _CXA_EXCEPTION_H |
| 16 |
| 17 #include <exception> // for std::unexpected_handler and std::terminate_handler |
| 18 #include <cxxabi.h> |
| 19 #include "unwind.h" |
| 20 |
| 21 namespace __cxxabiv1 { |
| 22 |
| 23 #pragma GCC visibility push(hidden) |
| 24 |
| 25 static const uint64_t kOurExceptionClass = 0x434C4E47432B2B00; // CLNGC
++\0 |
| 26 static const uint64_t kOurDependentExceptionClass = 0x434C4E47432B2B01; // CLNGC
++\1 |
| 27 static const uint64_t get_vendor_and_language = 0xFFFFFFFFFFFFFF00; // mask
for CLNGC++ |
| 28 |
| 29 struct __cxa_exception { |
| 30 #if __LP64__ |
| 31 // This is a new field to support C++ 0x exception_ptr. |
| 32 // For binary compatibility it is at the start of this |
| 33 // struct which is prepended to the object thrown in |
| 34 // __cxa_allocate_exception. |
| 35 size_t referenceCount; |
| 36 #endif |
| 37 |
| 38 // Manage the exception object itself. |
| 39 std::type_info *exceptionType; |
| 40 void (*exceptionDestructor)(void *); |
| 41 std::unexpected_handler unexpectedHandler; |
| 42 std::terminate_handler terminateHandler; |
| 43 |
| 44 __cxa_exception *nextException; |
| 45 |
| 46 int handlerCount; |
| 47 |
| 48 #ifdef __ARM_EABI_UNWINDER__ |
| 49 __cxa_exception* nextPropagatingException; |
| 50 int propagationCount; |
| 51 #else |
| 52 int handlerSwitchValue; |
| 53 const unsigned char *actionRecord; |
| 54 const unsigned char *languageSpecificData; |
| 55 void *catchTemp; |
| 56 void *adjustedPtr; |
| 57 #endif |
| 58 |
| 59 #if !__LP64__ |
| 60 // This is a new field to support C++ 0x exception_ptr. |
| 61 // For binary compatibility it is placed where the compiler |
| 62 // previously adding padded to 64-bit align unwindHeader. |
| 63 size_t referenceCount; |
| 64 #endif |
| 65 |
| 66 _Unwind_Exception unwindHeader; |
| 67 }; |
| 68 |
| 69 // http://sourcery.mentor.com/archives/cxx-abi-dev/msg01924.html |
| 70 |
| 71 struct __cxa_dependent_exception { |
| 72 #if __LP64__ |
| 73 void* primaryException; |
| 74 #endif |
| 75 |
| 76 std::type_info *exceptionType; |
| 77 void (*exceptionDestructor)(void *); |
| 78 std::unexpected_handler unexpectedHandler; |
| 79 std::terminate_handler terminateHandler; |
| 80 |
| 81 __cxa_exception *nextException; |
| 82 |
| 83 int handlerCount; |
| 84 |
| 85 #ifdef __ARM_EABI_UNWINDER__ |
| 86 __cxa_exception* nextPropagatingException; |
| 87 int propagationCount; |
| 88 #else |
| 89 int handlerSwitchValue; |
| 90 const unsigned char *actionRecord; |
| 91 const unsigned char *languageSpecificData; |
| 92 void * catchTemp; |
| 93 void *adjustedPtr; |
| 94 #endif |
| 95 |
| 96 #if !__LP64__ |
| 97 void* primaryException; |
| 98 #endif |
| 99 |
| 100 _Unwind_Exception unwindHeader; |
| 101 }; |
| 102 |
| 103 struct __cxa_eh_globals { |
| 104 __cxa_exception * caughtExceptions; |
| 105 unsigned int uncaughtExceptions; |
| 106 #ifdef __ARM_EABI_UNWINDER__ |
| 107 __cxa_exception* propagatingExceptions; |
| 108 #endif |
| 109 }; |
| 110 |
| 111 #pragma GCC visibility pop |
| 112 #pragma GCC visibility push(default) |
| 113 |
| 114 extern "C" __cxa_eh_globals * __cxa_get_globals (); |
| 115 extern "C" __cxa_eh_globals * __cxa_get_globals_fast (); |
| 116 |
| 117 extern "C" void * __cxa_allocate_dependent_exception (); |
| 118 extern "C" void __cxa_free_dependent_exception (void * dependent_exception); |
| 119 |
| 120 #pragma GCC visibility pop |
| 121 } |
| 122 |
| 123 #endif // _CXA_EXCEPTION_H |
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