bridges/source/cpp_uno/gcc3_macosx_x86-64/share.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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   9  * This file incorporates work covered by the following license notice:
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  12  *   contributor license agreements. See the NOTICE file distributed
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  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19 #ifndef INCLUDED_BRIDGES_SOURCE_CPP_UNO_GCC3_MACOSX_X86_64_SHARE_HXX
  20 #define INCLUDED_BRIDGES_SOURCE_CPP_UNO_GCC3_MACOSX_X86_64_SHARE_HXX
  21
  22 #include <uno/mapping.h>
  23
  24 #include <typeinfo>
  25 #include <exception>
  26 #include <cstddef>
  27
  28 namespace CPPU_CURRENT_NAMESPACE
  29 {
  30
  31 // From opensource.apple.com: libunwind-35.1/include/unwind.h
  32
  33 typedef enum {
  34     _URC_NO_REASON = 0,
  35     _URC_FOREIGN_EXCEPTION_CAUGHT = 1,
  36     _URC_FATAL_PHASE2_ERROR = 2,
  37     _URC_FATAL_PHASE1_ERROR = 3,
  38     _URC_NORMAL_STOP = 4,
  39     _URC_END_OF_STACK = 5,
  40     _URC_HANDLER_FOUND = 6,
  41     _URC_INSTALL_CONTEXT = 7,
  42     _URC_CONTINUE_UNWIND = 8
  43 } _Unwind_Reason_Code;
  44
  45 struct _Unwind_Exception
  46 {
  47     uint64_t                   exception_class;
  48     void                     (*exception_cleanup)(_Unwind_Reason_Code reason, struct _Unwind_Exception* exc);
  49     uintptr_t                  private_1;        // non-zero means forced unwind
  50     uintptr_t                  private_2;        // holds sp that phase1 found for phase2 to use
  51 #if !__LP64__
  52     // The gcc implementation of _Unwind_Exception used attribute mode on the above fields
  53     // which had the side effect of causing this whole struct to round up to 32 bytes in size.
  54     // To be more explicit, we add pad fields added for binary compatibility.
  55     uint32_t                reserved[3];
  56 #endif
  57 };
  58
  59
  60 // From libcppabi-24.2/include/unwind-cxx.h
  61
  62 typedef unsigned _Unwind_Ptr __attribute__((__mode__(__pointer__)));
  63
  64 // A C++ exception object consists of a header, which is a wrapper around
  65 // an unwind object header with additional C++ specific information,
  66 // followed by the exception object itself.
  67
  68 struct __cxa_exception
  69 {
  70 #if __LP64__
  71     // This is a new field to support C++ 0x exception_ptr.
  72     // For binary compatibility it is at the start of this
  73     // struct which is prepended to the object thrown in
  74     // __cxa_allocate_exception.
  75   size_t referenceCount;
  76 #endif
  77   // Manage the exception object itself.
  78   std::type_info *exceptionType;
  79   void (*exceptionDestructor)(void *);
  80
  81   // The C++ standard has entertaining rules wrt calling set_terminate
  82   // and set_unexpected in the middle of the exception cleanup process.
  83   void (*unexpectedHandler)(); // std::unexpected_handler dropped from C++17
  84   std::terminate_handler terminateHandler;
  85
  86   // The caught exception stack threads through here.
  87   __cxa_exception *nextException;
  88
  89   // How many nested handlers have caught this exception.  A negated
  90   // value is a signal that this object has been rethrown.
  91   int handlerCount;
  92
  93 #ifdef __ARM_EABI_UNWINDER__
  94   // Stack of exceptions in cleanups.
  95   __cxa_exception* nextPropagatingException;
  96
  97   // The number of active cleanup handlers for this exception.
  98   int propagationCount;
  99 #else
 100   // Cache parsed handler data from the personality routine Phase 1
 101   // for Phase 2 and __cxa_call_unexpected.
 102   int handlerSwitchValue;
 103   const unsigned char *actionRecord;
 104   const unsigned char *languageSpecificData;
 105   _Unwind_Ptr catchTemp;
 106   void *adjustedPtr;
 107 #endif
 108 #if !__LP64__
 109     // This is a new field to support C++ 0x exception_ptr.
 110     // For binary compatibility it is placed where the compiler
 111     // previously adding padded to 64-bit align unwindHeader.
 112   size_t referenceCount;
 113 #endif
 114
 115   // The generic exception header.  Must be last.
 116   _Unwind_Exception unwindHeader;
 117 };
 118
 119 // Each thread in a C++ program has access to a __cxa_eh_globals object.
 120 struct __cxa_eh_globals
 121 {
 122   __cxa_exception *caughtExceptions;
 123   unsigned int uncaughtExceptions;
 124 #ifdef __ARM_EABI_UNWINDER__
 125   __cxa_exception* propagatingExceptions;
 126 #endif
 127 };
 128
 129 }
 130
 131 extern "C" CPPU_CURRENT_NAMESPACE::__cxa_eh_globals *__cxa_get_globals () throw();
 132
 133 namespace CPPU_CURRENT_NAMESPACE
 134 {
 135
 136 void raiseException(
 137     uno_Any * pUnoExc, uno_Mapping * pUno2Cpp );
 138
 139 void fillUnoException(uno_Any *, uno_Mapping * pCpp2Uno);
 140 }
 141
 142 #endif
 143 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */