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-rw-r--r--bridges/source/cpp_uno/msvc_shared/cpp2uno.cxx354
-rw-r--r--bridges/source/cpp_uno/msvc_shared/except.cxx340
2 files changed, 694 insertions, 0 deletions
diff --git a/bridges/source/cpp_uno/msvc_shared/cpp2uno.cxx b/bridges/source/cpp_uno/msvc_shared/cpp2uno.cxx
new file mode 100644
index 000000000..15aa14d9b
--- /dev/null
+++ b/bridges/source/cpp_uno/msvc_shared/cpp2uno.cxx
@@ -0,0 +1,354 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed
+ * with this work for additional information regarding copyright
+ * ownership. The ASF licenses this file to you under the Apache
+ * License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <malloc.h>
+
+#include <com/sun/star/uno/genfunc.hxx>
+#include <sal/log.hxx>
+#include <uno/data.h>
+#include <typelib/typedescription.hxx>
+
+#include <bridge.hxx>
+#include <cppinterfaceproxy.hxx>
+#include <types.hxx>
+#include <vtablefactory.hxx>
+
+#include <msvc/except.hxx>
+#include <msvc/cpp2uno.hxx>
+
+using namespace ::com::sun::star;
+
+static typelib_TypeClass
+cpp2uno_call(bridges::cpp_uno::shared::CppInterfaceProxy* pThis,
+ const typelib_TypeDescription* pMemberTD,
+ typelib_TypeDescriptionReference* pReturnTypeRef, // nullptr indicates void return
+ const sal_Int32 nParams, typelib_MethodParameter* pParams, void** pCallStack,
+ void** const pReturnAddr)
+{
+ // return type
+ typelib_TypeDescription* pReturnTD = nullptr;
+ if (pReturnTypeRef)
+ TYPELIB_DANGER_GET(&pReturnTD, pReturnTypeRef);
+
+ // if we don't return via register, the first stack parameter is the return value
+ int nFirstRealParam = 2;
+ if (pReturnAddr == pCallStack)
+ ++nFirstRealParam;
+
+ void* pUnoReturn = nullptr;
+ // complex return ptr: if != nullptr && != pUnoReturn, reconversion needed
+ void* pCppReturn = nullptr;
+
+ if (pReturnTD)
+ {
+ if (bridges::cpp_uno::shared::isSimpleType(pReturnTD))
+ pUnoReturn = pReturnAddr;
+ else
+ {
+ pCppReturn = pCallStack[nFirstRealParam++];
+ pUnoReturn = (bridges::cpp_uno::shared::relatesToInterfaceType(pReturnTD)
+ ? alloca(pReturnTD->nSize)
+ : pCppReturn);
+ }
+ }
+
+ // parameters passed to the UNO function
+ void** pUnoArgs = static_cast<void**>(alloca(sizeof(void*) * nParams));
+
+ // parameters received from C++
+ void** pCppArgs = static_cast<void**>(alloca(sizeof(void*) * nParams));
+
+ // TODO: switch to typedef std::pair<sal_Int32, typelib_TypeDescription*> ReconversationInfo;
+ sal_Int32 nTempIndex = 0;
+ // indexes of values this have to be converted (interface conversion C++<=>UNO)
+ sal_Int32* pTempIndexes = static_cast<sal_Int32*>(alloca(sizeof(sal_Int32) * nParams));
+ // type descriptions for reconversions
+ typelib_TypeDescription** ppTempParamTD
+ = static_cast<typelib_TypeDescription**>(alloca(sizeof(void*) * nParams));
+
+ for (std::pair<sal_Int32, void**> p(0, pCallStack + nFirstRealParam); p.first < nParams;
+ ++p.first, ++p.second)
+ {
+ const auto& nPos = p.first;
+ auto& pCppIncomingParams = p.second;
+
+ const typelib_MethodParameter& rParam = pParams[nPos];
+ typelib_TypeDescription* pParamTD = nullptr;
+ TYPELIB_DANGER_GET(&pParamTD, rParam.pTypeRef);
+
+ if (!rParam.bOut && bridges::cpp_uno::shared::isSimpleType(pParamTD))
+ {
+ pCppArgs[nPos] = pCppIncomingParams;
+ pUnoArgs[nPos] = pCppIncomingParams;
+ if (sizeof(void*) == sizeof(sal_Int32)) // account 64bit types on 32bit arch
+ {
+ switch (pParamTD->eTypeClass)
+ {
+ case typelib_TypeClass_HYPER:
+ case typelib_TypeClass_UNSIGNED_HYPER:
+ case typelib_TypeClass_DOUBLE:
+ ++pCppIncomingParams;
+ break;
+ default:
+ break;
+ }
+ }
+ TYPELIB_DANGER_RELEASE(pParamTD);
+ }
+ else // ptr to complex value | ref
+ {
+ pCppArgs[nPos] = *pCppIncomingParams;
+
+ if (!rParam.bIn) // is pure out
+ {
+ // UNO out is unconstructed memory
+ pUnoArgs[nPos] = alloca(pParamTD->nSize);
+ // pParamTD will be released at reconversion
+ pTempIndexes[nTempIndex] = nPos;
+ ppTempParamTD[nTempIndex++] = pParamTD;
+ }
+ // is in/inout
+ else if (bridges::cpp_uno::shared::relatesToInterfaceType(pParamTD))
+ {
+ ::uno_copyAndConvertData(pUnoArgs[nPos] = alloca(pParamTD->nSize),
+ *pCppIncomingParams, pParamTD,
+ pThis->getBridge()->getCpp2Uno());
+ // pParamTD will be released at reconversion
+ pTempIndexes[nTempIndex] = nPos;
+ ppTempParamTD[nTempIndex++] = pParamTD;
+ }
+ else // direct way
+ {
+ pUnoArgs[nPos] = *pCppIncomingParams;
+ TYPELIB_DANGER_RELEASE(pParamTD);
+ }
+ }
+ }
+
+ // ExceptionHolder
+ uno_Any aUnoExc; // Any will be constructed by callee
+ uno_Any* pUnoExc = &aUnoExc;
+
+ // invoke UNO dispatch call
+ pThis->getUnoI()->pDispatcher(pThis->getUnoI(), pMemberTD, pUnoReturn, pUnoArgs, &pUnoExc);
+
+ // in case an exception occurred...
+ if (pUnoExc)
+ {
+ // destruct temporary in/inout params
+ while (nTempIndex--)
+ {
+ const sal_Int32 nIndex = pTempIndexes[nTempIndex];
+ if (pParams[nIndex].bIn) // is in/inout => was constructed
+ ::uno_destructData(pUnoArgs[nIndex], ppTempParamTD[nTempIndex], nullptr);
+ TYPELIB_DANGER_RELEASE(ppTempParamTD[nTempIndex]);
+ }
+ if (pReturnTD)
+ TYPELIB_DANGER_RELEASE(pReturnTD);
+
+ msvc_raiseException(&aUnoExc, pThis->getBridge()->getUno2Cpp()); // has to destruct the any
+
+ // is here for dummy
+ return typelib_TypeClass_VOID;
+ }
+ else // no exception occurred...
+ {
+ // handle temporary params
+ while (nTempIndex--)
+ {
+ const sal_Int32 nIndex = pTempIndexes[nTempIndex];
+ typelib_TypeDescription* pParamTD = ppTempParamTD[nTempIndex];
+
+ if (pParams[nIndex].bOut) // inout/out
+ {
+ // convert and assign
+ ::uno_destructData(pCppArgs[nIndex], pParamTD, uno::cpp_release);
+ ::uno_copyAndConvertData(pCppArgs[nIndex], pUnoArgs[nIndex], pParamTD,
+ pThis->getBridge()->getUno2Cpp());
+ }
+ // destroy temp UNO param
+ ::uno_destructData(pUnoArgs[nIndex], pParamTD, nullptr);
+
+ TYPELIB_DANGER_RELEASE(pParamTD);
+ }
+
+ // handle return
+ if (pCppReturn) // has complex return
+ {
+ if (pUnoReturn != pCppReturn) // needs reconversion
+ {
+ ::uno_copyAndConvertData(pCppReturn, pUnoReturn, pReturnTD,
+ pThis->getBridge()->getUno2Cpp());
+ // destroy temp UNO return
+ ::uno_destructData(pUnoReturn, pReturnTD, nullptr);
+ }
+ *pReturnAddr = pCppReturn;
+ }
+
+ if (!pReturnTD)
+ return typelib_TypeClass_VOID;
+ else
+ {
+ typelib_TypeClass eRet = pReturnTD->eTypeClass;
+ TYPELIB_DANGER_RELEASE(pReturnTD);
+ return eRet;
+ }
+ }
+}
+
+typelib_TypeClass __cdecl cpp_mediate(void** pCallStack, const sal_Int32 nFunctionIndex,
+ const sal_Int32 nVtableOffset,
+ sal_Int64* const pRegisterReturn)
+{
+ // pCallStack:
+ // x64: ret value, ret adr, this, [complex ret *], cpp params
+ // x86: ret adr, this, [complex ret *], cpp params
+ //
+ // pRegisterReturn is just set on x86
+ // the return value is either the direct set for simply types, or it is set
+ // to "complex ret *" and the real return value is constructed at that memory.
+
+ // if we don't return via register, the first stack parameter is the return value
+ void** const pReturnAddr
+ = pRegisterReturn ? reinterpret_cast<void**>(pRegisterReturn) : pCallStack;
+
+ void* const pThis = static_cast<char*>(pCallStack[pRegisterReturn ? 1 : 2]) - nVtableOffset;
+ bridges::cpp_uno::shared::CppInterfaceProxy* pCppI
+ = bridges::cpp_uno::shared::CppInterfaceProxy::castInterfaceToProxy(pThis);
+
+ typelib_InterfaceTypeDescription* pInterfaceTD = pCppI->getTypeDescr();
+
+ SAL_INFO("bridges", "cpp_vtable_call: pCallStack=["
+ << std::hex << pCallStack[0] << "," << pCallStack[1] << ","
+ << pCallStack[2] << ",...], pThis=" << pThis << ", pCppI=" << pCppI
+ << std::dec << ", nFunctionIndex=" << nFunctionIndex
+ << ", nVtableOffset=" << nVtableOffset);
+ SAL_INFO("bridges", "name=" << OUString::unacquired(&pInterfaceTD->aBase.pTypeName));
+
+ if (nFunctionIndex >= pInterfaceTD->nMapFunctionIndexToMemberIndex)
+ {
+ OUString sError = "illegal " + OUString::unacquired(&pInterfaceTD->aBase.pTypeName)
+ + " vtable index " + OUString::number(nFunctionIndex) + "/"
+ + OUString::number(pInterfaceTD->nMapFunctionIndexToMemberIndex);
+ SAL_WARN("bridges", sError);
+ throw uno::RuntimeException(sError, static_cast<uno::XInterface*>(pThis));
+ }
+
+ // determine called method
+ sal_Int32 nMemberPos = pInterfaceTD->pMapFunctionIndexToMemberIndex[nFunctionIndex];
+ assert(nMemberPos < pInterfaceTD->nAllMembers);
+
+ uno::TypeDescription aMemberDescr(pInterfaceTD->ppAllMembers[nMemberPos]);
+
+ SAL_INFO("bridges", "Calling " << OUString::unacquired(&aMemberDescr.get()->pTypeName));
+
+ typelib_TypeClass eRet = typelib_TypeClass_VOID;
+ switch (aMemberDescr.get()->eTypeClass)
+ {
+ case typelib_TypeClass_INTERFACE_ATTRIBUTE:
+ {
+ typelib_TypeDescriptionReference* pAttrTypeRef
+ = reinterpret_cast<typelib_InterfaceAttributeTypeDescription*>(aMemberDescr.get())
+ ->pAttributeTypeRef;
+
+ if (pInterfaceTD->pMapMemberIndexToFunctionIndex[nMemberPos] == nFunctionIndex)
+ { // is GET method
+ eRet = cpp2uno_call(pCppI, aMemberDescr.get(), pAttrTypeRef, 0, nullptr, pCallStack,
+ pReturnAddr);
+ }
+ else
+ { // is SET method
+ typelib_MethodParameter aParam;
+ aParam.pTypeRef = pAttrTypeRef;
+ aParam.bIn = true;
+ aParam.bOut = false;
+
+ eRet = cpp2uno_call(pCppI, aMemberDescr.get(), nullptr, 1, &aParam, pCallStack,
+ pReturnAddr);
+ }
+ break;
+ }
+ case typelib_TypeClass_INTERFACE_METHOD:
+ {
+ // is METHOD
+ switch (nFunctionIndex)
+ {
+ // standard XInterface vtable calls
+ case 1: // acquire()
+ pCppI->acquireProxy(); // non virtual call!
+ eRet = typelib_TypeClass_VOID;
+ break;
+ case 2: // release()
+ pCppI->releaseProxy(); // non virtual call!
+ eRet = typelib_TypeClass_VOID;
+ break;
+ case 0: // queryInterface() opt
+ {
+ const unsigned int nCppStackPos = (pReturnAddr == pCallStack) ? 4 : 3;
+ typelib_TypeDescription* pQueryTD = nullptr;
+ TYPELIB_DANGER_GET(
+ &pQueryTD,
+ static_cast<uno::Type*>(pCallStack[nCppStackPos])->getTypeLibType());
+ if (pQueryTD)
+ {
+ uno::XInterface* pInterface = nullptr;
+
+ pCppI->getBridge()->getCppEnv()->getRegisteredInterface(
+ pCppI->getBridge()->getCppEnv(), reinterpret_cast<void**>(&pInterface),
+ pCppI->getOid().pData,
+ reinterpret_cast<typelib_InterfaceTypeDescription*>(pQueryTD));
+
+ if (pInterface)
+ {
+ const unsigned int nReturnAddrPos = nCppStackPos - 1;
+ ::uno_any_construct(static_cast<uno_Any*>(pCallStack[nReturnAddrPos]),
+ &pInterface, pQueryTD, uno::cpp_acquire);
+ pInterface->release();
+ TYPELIB_DANGER_RELEASE(pQueryTD);
+
+ *pReturnAddr = pCallStack[nReturnAddrPos];
+ eRet = typelib_TypeClass_ANY;
+ break;
+ }
+ TYPELIB_DANGER_RELEASE(pQueryTD);
+ }
+ [[fallthrough]];
+ }
+ default: // perform queryInterface()
+ {
+ typelib_InterfaceMethodTypeDescription* pMethodTD
+ = reinterpret_cast<typelib_InterfaceMethodTypeDescription*>(
+ aMemberDescr.get());
+
+ eRet = cpp2uno_call(pCppI, aMemberDescr.get(), pMethodTD->pReturnTypeRef,
+ pMethodTD->nParams, pMethodTD->pParams, pCallStack,
+ pReturnAddr);
+ }
+ }
+ break;
+ }
+ default:
+ throw uno::RuntimeException("no member description found!",
+ static_cast<uno::XInterface*>(pThis));
+ }
+
+ return eRet;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/bridges/source/cpp_uno/msvc_shared/except.cxx b/bridges/source/cpp_uno/msvc_shared/except.cxx
new file mode 100644
index 000000000..283baa751
--- /dev/null
+++ b/bridges/source/cpp_uno/msvc_shared/except.cxx
@@ -0,0 +1,340 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed
+ * with this work for additional information regarding copyright
+ * ownership. The ASF licenses this file to you under the Apache
+ * License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <sal/config.h>
+
+#include <memory>
+
+#include <malloc.h>
+#include <new.h>
+#include <typeinfo>
+#include <signal.h>
+
+#include <rtl/alloc.h>
+#include <rtl/strbuf.hxx>
+#include <rtl/ustrbuf.hxx>
+#include <sal/log.hxx>
+#include <osl/mutex.hxx>
+
+#include <com/sun/star/uno/Any.hxx>
+#include <unordered_map>
+#include <except.hxx>
+#include <msvc/except.hxx>
+
+#if defined(_M_IX86)
+#include <msvc/x86.hxx>
+#elif defined(_M_AMD64)
+#include <msvc/amd64.hxx>
+#elif defined(_M_ARM64)
+#include <msvc/arm64.hxx>
+#else
+#error "Unsupported machine type"
+#endif
+
+#pragma pack(push, 8)
+
+using namespace ::com::sun::star;
+
+static OUString toUNOname(OUString const& rRTTIname) noexcept
+{
+ OUStringBuffer aRet(64);
+ OUString aStr(rRTTIname.copy(4, rRTTIname.getLength() - 4 - 2)); // filter .?AUzzz@yyy@xxx@@
+ sal_Int32 nPos = aStr.getLength();
+ while (nPos > 0)
+ {
+ sal_Int32 n = aStr.lastIndexOf('@', nPos);
+ aRet.append(aStr.subView(n + 1, nPos - n - 1));
+ if (n >= 0)
+ aRet.append('.');
+ nPos = n;
+ }
+ return aRet.makeStringAndClear();
+}
+
+static OUString toRTTIname(OUString const& rUNOname) noexcept
+{
+ OUStringBuffer aRet(64);
+ aRet.append(".?AV"); // class ".?AV"; struct ".?AU"
+ sal_Int32 nPos = rUNOname.getLength();
+ while (nPos > 0)
+ {
+ sal_Int32 n = rUNOname.lastIndexOf('.', nPos);
+ aRet.append(rUNOname.subView(n + 1, nPos - n - 1));
+ aRet.append('@');
+ nPos = n;
+ }
+ aRet.append('@');
+ return aRet.makeStringAndClear();
+}
+
+ExceptionTypeInfo::~ExceptionTypeInfo() noexcept { (void)m_data; }
+
+ExceptionTypeInfoWrapper* RTTInfos::getInfo(OUString const& rUNOname) noexcept
+{
+ ExceptionTypeInfoWrapper* pRTTI;
+ t_string2PtrMap::const_iterator const iFind(m_allRTTI.find(rUNOname));
+
+ if (iFind != m_allRTTI.end())
+ pRTTI = static_cast<ExceptionTypeInfoWrapper*>(iFind->second);
+ else
+ {
+ OString aRawName(OUStringToOString(toRTTIname(rUNOname), RTL_TEXTENCODING_ASCII_US));
+ // Wrap new ExceptionTypeInfo in ExceptionTypeInfoWrapper to preserve length info
+ pRTTI = new (std::malloc(sizeof(ExceptionTypeInfoWrapper) + aRawName.getLength()))
+ ExceptionTypeInfoWrapper(nullptr, aRawName.getStr());
+
+ std::pair<t_string2PtrMap::iterator, bool> insertion(
+ m_allRTTI.insert(t_string2PtrMap::value_type(rUNOname, pRTTI)));
+ assert(insertion.second && "### rtti insertion failed?!");
+ }
+
+ return pRTTI;
+}
+
+type_info* RTTInfos::get(OUString const& rUNOname, int* len) noexcept
+{
+ static RTTInfos* s_pRTTIs = new RTTInfos();
+
+ static_assert(sizeof(ExceptionTypeInfo) == sizeof(std::type_info),
+ "### type info structure size differ!");
+
+ osl::MutexGuard aGuard(s_pRTTIs->m_aMutex);
+ ExceptionTypeInfoWrapper* pETIW = s_pRTTIs->getInfo(rUNOname);
+ if (len)
+ *len = pETIW->get_type_info_size();
+ return pETIW->get_type_info();
+}
+
+RTTInfos::RTTInfos() noexcept {}
+
+DWORD ExceptionInfos::allocationGranularity = 0;
+
+ExceptionInfos::ExceptionInfos() noexcept {}
+
+ExceptionInfos::~ExceptionInfos() noexcept
+{
+ SAL_INFO("bridges", "> freeing exception infos... <");
+
+ osl::MutexGuard aGuard(m_aMutex);
+ for (auto& rEntry : m_allRaiseInfos)
+ delete static_cast<RaiseInfo*>(rEntry.second);
+}
+
+RaiseInfo* ExceptionInfos::getRaiseInfo(typelib_TypeDescription* pTD) noexcept
+{
+ static ExceptionInfos* s_pInfos = []() {
+#if defined _M_AMD64 || defined _M_ARM64
+ SYSTEM_INFO systemInfo;
+ GetSystemInfo(&systemInfo);
+ allocationGranularity = systemInfo.dwAllocationGranularity;
+#endif
+ return new ExceptionInfos();
+ }();
+
+ assert(pTD
+ && (pTD->eTypeClass == typelib_TypeClass_STRUCT
+ || pTD->eTypeClass == typelib_TypeClass_EXCEPTION));
+
+ RaiseInfo* pRaiseInfo;
+
+ OUString const& rTypeName = OUString::unacquired(&pTD->pTypeName);
+ osl::MutexGuard aGuard(s_pInfos->m_aMutex);
+ t_string2PtrMap::const_iterator const iFind(s_pInfos->m_allRaiseInfos.find(rTypeName));
+ if (iFind != s_pInfos->m_allRaiseInfos.end())
+ pRaiseInfo = static_cast<RaiseInfo*>(iFind->second);
+ else
+ {
+ pRaiseInfo = new RaiseInfo(pTD);
+
+ std::pair<t_string2PtrMap::iterator, bool> insertion(s_pInfos->m_allRaiseInfos.insert(
+ t_string2PtrMap::value_type(rTypeName, static_cast<void*>(pRaiseInfo))));
+ assert(insertion.second && "### raise info insertion failed?!");
+ }
+
+ return pRaiseInfo;
+}
+
+void msvc_raiseException(uno_Any* pUnoExc, uno_Mapping* pUno2Cpp)
+{
+ // no ctor/dtor in here: this leads to dtors called twice upon RaiseException()!
+ // thus this obj file will be compiled without opt, so no inlining of
+ // ExceptionInfos::getRaiseInfo()
+
+ // construct cpp exception object
+ typelib_TypeDescription* pTD = nullptr;
+ TYPELIB_DANGER_GET(&pTD, pUnoExc->pType);
+
+ void* pCppExc = alloca(pTD->nSize);
+ ::uno_copyAndConvertData(pCppExc, pUnoExc->pData, pTD, pUno2Cpp);
+
+ ULONG_PTR arFilterArgs[MSVC_EH_PARAMETERS];
+ arFilterArgs[0] = MSVC_EH_MAGIC_PARAM;
+ arFilterArgs[1] = reinterpret_cast<ULONG_PTR>(pCppExc);
+ arFilterArgs[2] = reinterpret_cast<ULONG_PTR>(ExceptionInfos::getRaiseInfo(pTD));
+#if MSVC_EH_PARAMETERS == 4
+ arFilterArgs[3] = reinterpret_cast<RaiseInfo*>(arFilterArgs[2])->_codeBase;
+#endif
+
+ // Destruct uno exception
+ ::uno_any_destruct(pUnoExc, nullptr);
+ TYPELIB_DANGER_RELEASE(pTD);
+
+ // last point to release anything not affected by stack unwinding
+ RaiseException(MSVC_EH_MAGIC_CODE, EXCEPTION_NONCONTINUABLE, MSVC_EH_PARAMETERS, arFilterArgs);
+}
+
+// This function does the same check as __CxxDetectRethrow from msvcrt (see its
+// crt/src/vcruntime/mgdframe.cpp). But it does not alter the global state, i.e. it does not
+// increment __ProcessingThrow, and so does not break following exception handling. We rely on the
+// definition of EHExceptionRecord, PER_IS_MSVC_EH and PER_PTHROW, that are current as of msvcrt
+// 2017 (14.14.26428).
+static bool DetectRethrow(void* ppExcept)
+{
+ struct EHExceptionRecord
+ {
+ DWORD ExceptionCode;
+ DWORD ExceptionFlags;
+ struct _EXCEPTION_RECORD* ExceptionRecord;
+ PVOID ExceptionAddress;
+ DWORD NumberParameters;
+#if MSVC_EH_PARAMETERS == 3
+ struct EHParameters
+#else
+ struct alignas(8)
+#endif
+ {
+ DWORD magicNumber;
+ PVOID pExceptionObject;
+ PVOID pThrowInfo;
+#if MSVC_EH_PARAMETERS == 4
+ PVOID pThrowImageBase;
+#endif
+ } params;
+ };
+
+ constexpr auto PER_IS_MSVC_EH = [](EHExceptionRecord* p) {
+ return p->ExceptionCode == MSVC_EH_MAGIC_CODE && p->NumberParameters == MSVC_EH_PARAMETERS
+ && (p->params.magicNumber == MSVC_EH_MAGIC_PARAM
+ || p->params.magicNumber == MSVC_EH_MAGIC_PARAM + 1
+ || p->params.magicNumber == MSVC_EH_MAGIC_PARAM + 2);
+ };
+
+ constexpr auto PER_PTHROW = [](EHExceptionRecord* p) { return p->params.pThrowInfo; };
+
+ EHExceptionRecord* pExcept;
+ if (!ppExcept)
+ return false;
+ pExcept = *static_cast<EHExceptionRecord**>(ppExcept);
+ if (PER_IS_MSVC_EH(pExcept) && PER_PTHROW(pExcept) == nullptr)
+ return true;
+ return false;
+}
+
+int msvc_filterCppException(EXCEPTION_POINTERS* pPointers, uno_Any* pUnoExc, uno_Mapping* pCpp2Uno)
+{
+ if (pPointers == nullptr)
+ return EXCEPTION_CONTINUE_SEARCH;
+
+ EXCEPTION_RECORD* pRecord = pPointers->ExceptionRecord;
+
+ // Handle only C++ exceptions:
+ if (pRecord == nullptr || pRecord->ExceptionCode != MSVC_EH_MAGIC_CODE)
+ return EXCEPTION_CONTINUE_SEARCH;
+
+ const bool rethrow = DetectRethrow(&pRecord);
+ assert(pRecord == pPointers->ExceptionRecord);
+
+ if (rethrow && pRecord == pPointers->ExceptionRecord)
+ pRecord = *reinterpret_cast<EXCEPTION_RECORD**>(__current_exception());
+
+ // Rethrow: handle only C++ exceptions:
+ if (pRecord == nullptr || pRecord->ExceptionCode != MSVC_EH_MAGIC_CODE)
+ return EXCEPTION_CONTINUE_SEARCH;
+
+ if (pRecord->NumberParameters == MSVC_EH_PARAMETERS
+#if MSVC_EH_PARAMETERS == 4
+ && pRecord->ExceptionInformation[0] == MSVC_EH_MAGIC_PARAM
+#endif
+ && pRecord->ExceptionInformation[1] != 0 && pRecord->ExceptionInformation[2] != 0
+#if MSVC_EH_PARAMETERS == 4
+ && pRecord->ExceptionInformation[3] != 0
+#endif
+ )
+ {
+ // ExceptionInformation[1] is the address of the thrown object
+ // (or the address of a pointer to it, in most cases when it
+ // is a C++ class, obviously).
+
+ // [2] is the pThrowInfo pointer
+ RaiseInfo* pInfo = reinterpret_cast<RaiseInfo*>(pRecord->ExceptionInformation[2]);
+
+#if MSVC_EH_PARAMETERS == 3
+ ULONG_PTR base = 0;
+ DWORD* types = reinterpret_cast<DWORD*>(pInfo->_types);
+#else
+ // [3] is the image base address which is added the 32-bit
+ // rva_t fields in throwinfo to get actual 64-bit addresses
+ ULONG_PTR base = pRecord->ExceptionInformation[3];
+ DWORD* types = reinterpret_cast<DWORD*>(base + pInfo->_types);
+#endif
+ if (types != nullptr && types[0] != 0 && types[1] != 0)
+ {
+ ExceptionType* et = reinterpret_cast<ExceptionType*>(base + types[1]);
+ if (et->_pTypeInfo != 0)
+ {
+ OUString aRTTIname(OStringToOUString(
+ reinterpret_cast<ExceptionTypeInfo*>(base + et->_pTypeInfo)->m_d_name,
+ RTL_TEXTENCODING_ASCII_US));
+ OUString aUNOname(toUNOname(aRTTIname));
+
+ typelib_TypeDescription* pExcTD = nullptr;
+ typelib_typedescription_getByName(&pExcTD, aUNOname.pData);
+ if (pExcTD == nullptr)
+ {
+ OUString sMsg = "[mscx_uno bridge error] UNO type of C++ exception unknown: \""
+ + aUNOname + "\", RTTI-name=\"" + aRTTIname + "\"!";
+
+ uno::RuntimeException exc(sMsg);
+ uno_type_any_constructAndConvert(
+ pUnoExc, &exc, cppu::UnoType<decltype(exc)>::get().getTypeLibType(),
+ pCpp2Uno);
+ }
+ else
+ {
+ // construct uno exception any
+ uno_any_constructAndConvert(
+ pUnoExc, reinterpret_cast<void*>(pRecord->ExceptionInformation[1]), pExcTD,
+ pCpp2Uno);
+ typelib_typedescription_release(pExcTD);
+ }
+
+ return EXCEPTION_EXECUTE_HANDLER;
+ }
+ }
+ }
+
+ // though this unknown exception leaks now, no user-defined exception
+ // is ever thrown through the binary C-UNO dispatcher call stack.
+ uno::RuntimeException exc("[mscx_uno bridge error] unexpected C++ exception occurred!");
+ uno_type_any_constructAndConvert(
+ pUnoExc, &exc, cppu::UnoType<decltype(exc)>::get().getTypeLibType(), pCpp2Uno);
+ return EXCEPTION_EXECUTE_HANDLER;
+}
+
+#pragma pack(pop)
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-19 02:36:47 +0000