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Diffstat (limited to 'bridges/source/cpp_uno/msvc_win32_x86-64/uno2cpp.cxx')
| -rw-r--r-- | bridges/source/cpp_uno/msvc_win32_x86-64/uno2cpp.cxx | 454 |
1 files changed, 454 insertions, 0 deletions
diff --git a/bridges/source/cpp_uno/msvc_win32_x86-64/uno2cpp.cxx b/bridges/source/cpp_uno/msvc_win32_x86-64/uno2cpp.cxx new file mode 100644 index 000000000..d5df4a161 --- /dev/null +++ b/bridges/source/cpp_uno/msvc_win32_x86-64/uno2cpp.cxx @@ -0,0 +1,454 @@ +/* -*- 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 <cassert> + +#include <malloc.h> + +#include <com/sun/star/uno/genfunc.hxx> +#include <uno/data.h> + +#include <bridge.hxx> +#include <types.hxx> +#include <unointerfaceproxy.hxx> +#include <vtables.hxx> + +#include <msvc/except.hxx> + +#if OSL_DEBUG_LEVEL > 1 +#include <stdio.h> +#endif + +using namespace ::com::sun::star; + +namespace +{ + +bool cpp_call( + bridges::cpp_uno::shared::UnoInterfaceProxy * pThis, + bridges::cpp_uno::shared::VtableSlot aVtableSlot, + typelib_TypeDescriptionReference * pReturnTypeRef, + sal_Int32 nParams, + typelib_MethodParameter * pParams, + void * pUnoReturn, + void * pUnoArgs[], + uno_Any ** ppUnoExc ) noexcept +{ + const int MAXPARAMS = 32; + + if ( nParams > MAXPARAMS ) + { + // We have a hard limit on the number of parameters so that we + // don't need any assembler code here but can call the + // function using normal C++. + + return false; + } + + // Table with this pointer, optional complex return value ptr, and the parameters + union { + sal_Int64 i; + void *p; + double d; + } aCppArgs[MAXPARAMS+2], uRetVal; + int nCppParamIndex = 0; + + // return type + typelib_TypeDescription * pReturnTD = nullptr; + TYPELIB_DANGER_GET( &pReturnTD, pReturnTypeRef ); + assert(pReturnTD); + + // 'this' + void * pAdjustedThisPtr = reinterpret_cast<void **>( pThis->getCppI() ) + aVtableSlot.offset; + aCppArgs[nCppParamIndex++].p = pAdjustedThisPtr; + + enum class ReturnKind { Void, Simple, Complex, ComplexConvert }; + ReturnKind retKind; + if (pUnoReturn == nullptr) { + retKind = ReturnKind::Void; + } else { + assert(pReturnTD != nullptr); + if (bridges::cpp_uno::shared::isSimpleType(pReturnTD)) { + retKind = ReturnKind::Simple; + } else if (bridges::cpp_uno::shared::relatesToInterfaceType(pReturnTD)) + { + retKind = ReturnKind::ComplexConvert; + aCppArgs[nCppParamIndex++].p = alloca(pReturnTD->nSize); + } else { + retKind = ReturnKind::Complex; + aCppArgs[nCppParamIndex++].p = pUnoReturn; + } + } + + // indexes of values this have to be converted (interface conversion C++<=>UNO) + int pTempCppIndexes[MAXPARAMS]; + int pTempIndexes[MAXPARAMS]; + int nTempIndexes = 0; + + // type descriptions for reconversions + typelib_TypeDescription *pTempParamTD[MAXPARAMS]; + + for (int nPos = 0; nPos < nParams; ++nPos, ++nCppParamIndex) + { + 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)) + { + ::uno_copyAndConvertData( + &aCppArgs[nCppParamIndex], pUnoArgs[nPos], pParamTD, + pThis->getBridge()->getUno2Cpp() ); + + // no longer needed + TYPELIB_DANGER_RELEASE( pParamTD ); + } + else // ptr to complex value | ref + { + if (!rParam.bIn) // Is pure out + { + // C++ out is constructed mem, UNO out is not! + ::uno_constructData( + aCppArgs[nCppParamIndex].p = alloca( pParamTD->nSize ), + pParamTD ); + + pTempCppIndexes[nTempIndexes] = nCppParamIndex; + + // default constructed for C++ call + pTempIndexes[nTempIndexes] = nPos; + + // will be released at reconversion + pTempParamTD[nTempIndexes++] = pParamTD; + } + // is in/inout + else if (bridges::cpp_uno::shared::relatesToInterfaceType(pParamTD)) + { + ::uno_copyAndConvertData( + aCppArgs[nCppParamIndex].p = alloca( pParamTD->nSize ), + pUnoArgs[nPos], pParamTD, + pThis->getBridge()->getUno2Cpp() ); + + pTempCppIndexes[nTempIndexes] = nCppParamIndex; + + // has to be reconverted + pTempIndexes[nTempIndexes] = nPos; + + // will be released at reconversion + pTempParamTD[nTempIndexes++] = pParamTD; + } + else // direct way + { + aCppArgs[nCppParamIndex].p = pUnoArgs[nPos]; + // no longer needed + TYPELIB_DANGER_RELEASE( pParamTD ); + } + } + } + + __try + { + // The first real parameter is always 'this'. + + // The Windows x64 calling convention is very regular and + // elegant (even if perhaps then slightly slower than the + // Linux x64 one): The first four parameters, never more, are + // passed in registers, as long as they are a qword in size + // or less. (If larger, a pointer to a temp copy is passed, so + // it's equivalent anyway.) Floating point values are passed + // in XMM0..3 registers, others in RCX, RDX, R8, R9. + + // Now, the nice thing for us is that when calling varargs + // functions, floating-point parameters among the four first + // ones are always passed *both* in an XMM and integer + // register. So we don't need to bother here calling the + // method different ways depending on what types of parameters + // it actually expects. We just pretend parameters 3..4 are + // doubles, and they will be passed both in XMM and integer + // registers, and the callee will find them where it + // expects. (The callee is not actually varargs, of course.) + + sal_Int64 (*pIMethod)(sal_Int64, ...) = + reinterpret_cast<sal_Int64 (*)(sal_Int64, ...)>( + (*static_cast<sal_uInt64 **>(pAdjustedThisPtr))[aVtableSlot.index]); + + double (*pFMethod)(sal_Int64, ...) = + reinterpret_cast<double (*)(sal_Int64, ...)>( + (*static_cast<sal_uInt64 **>(pAdjustedThisPtr))[aVtableSlot.index]); + + // Pass parameters 2..4 as if it was a floating-point value so + // that it gets put in both XMM and integer registers per the + // calling convention. It doesn't matter if it actually is a + // fp or not. + + if ( pReturnTD && + (pReturnTD->eTypeClass == typelib_TypeClass_FLOAT || + pReturnTD->eTypeClass == typelib_TypeClass_DOUBLE) ) + uRetVal.d = + pFMethod (aCppArgs[0].i, aCppArgs[1].d, aCppArgs[2].d, aCppArgs[3].d, + aCppArgs[4].i, aCppArgs[5].i, aCppArgs[6].i, aCppArgs[7].i, + aCppArgs[8].i, aCppArgs[9].i, aCppArgs[10].i, aCppArgs[11].i, + aCppArgs[12].i, aCppArgs[13].i, aCppArgs[14].i, aCppArgs[15].i, + aCppArgs[16].i, aCppArgs[17].i, aCppArgs[18].i, aCppArgs[19].i, + aCppArgs[20].i, aCppArgs[21].i, aCppArgs[22].i, aCppArgs[23].i, + aCppArgs[24].i, aCppArgs[25].i, aCppArgs[26].i, aCppArgs[27].i, + aCppArgs[28].i, aCppArgs[29].i, aCppArgs[30].i, aCppArgs[31].i ); + else + uRetVal.i = + pIMethod (aCppArgs[0].i, aCppArgs[1].d, aCppArgs[2].d, aCppArgs[3].d, + aCppArgs[4].i, aCppArgs[5].i, aCppArgs[6].i, aCppArgs[7].i, + aCppArgs[8].i, aCppArgs[9].i, aCppArgs[10].i, aCppArgs[11].i, + aCppArgs[12].i, aCppArgs[13].i, aCppArgs[14].i, aCppArgs[15].i, + aCppArgs[16].i, aCppArgs[17].i, aCppArgs[18].i, aCppArgs[19].i, + aCppArgs[20].i, aCppArgs[21].i, aCppArgs[22].i, aCppArgs[23].i, + aCppArgs[24].i, aCppArgs[25].i, aCppArgs[26].i, aCppArgs[27].i, + aCppArgs[28].i, aCppArgs[29].i, aCppArgs[30].i, aCppArgs[31].i ); + } + __except (msvc_filterCppException( + GetExceptionInformation(), + *ppUnoExc, pThis->getBridge()->getCpp2Uno() )) + { + // *ppUnoExc was constructed by filter function + // temporary params + while (nTempIndexes--) + { + int nCppIndex = pTempCppIndexes[nTempIndexes]; + // destroy temp C++ param => C++: every param was constructed + ::uno_destructData( + aCppArgs[nCppIndex].p, pTempParamTD[nTempIndexes], + uno::cpp_release ); + TYPELIB_DANGER_RELEASE( pTempParamTD[nTempIndexes] ); + } + + // return type + if (pReturnTD) + TYPELIB_DANGER_RELEASE( pReturnTD ); + + return true; + } + + // NO exception occurred + *ppUnoExc = nullptr; + + // reconvert temporary params + while (nTempIndexes--) + { + int nCppIndex = pTempCppIndexes[nTempIndexes]; + int nIndex = pTempIndexes[nTempIndexes]; + typelib_TypeDescription * pParamTD = + pTempParamTD[nTempIndexes]; + + if (pParams[nIndex].bIn) + { + if (pParams[nIndex].bOut) // inout + { + ::uno_destructData( + pUnoArgs[nIndex], pParamTD, nullptr ); // destroy UNO value + ::uno_copyAndConvertData( + pUnoArgs[nIndex], aCppArgs[nCppIndex].p, pParamTD, + pThis->getBridge()->getCpp2Uno() ); + } + } + else // pure out + { + ::uno_copyAndConvertData( + pUnoArgs[nIndex], aCppArgs[nCppIndex].p, pParamTD, + pThis->getBridge()->getCpp2Uno() ); + } + + // destroy temp C++ param => C++: every param was constructed + ::uno_destructData( + aCppArgs[nCppIndex].p, pParamTD, uno::cpp_release ); + + TYPELIB_DANGER_RELEASE( pParamTD ); + } + + // return value + switch (retKind) { + case ReturnKind::Void: + break; + case ReturnKind::Simple: + *static_cast<sal_Int64*>(pUnoReturn) = uRetVal.i; + break; + case ReturnKind::Complex: + assert(uRetVal.p == pUnoReturn); + break; + case ReturnKind::ComplexConvert: + assert(uRetVal.p == aCppArgs[1].p); + ::uno_copyAndConvertData( + pUnoReturn, uRetVal.p, pReturnTD, + pThis->getBridge()->getCpp2Uno() ); + ::uno_destructData( + uRetVal.p, pReturnTD, uno::cpp_release ); + break; + } + + // return type + if ( pReturnTD ) + TYPELIB_DANGER_RELEASE( pReturnTD ); + + return true; +} + +} // namespace + +namespace bridges::cpp_uno::shared { + +void unoInterfaceProxyDispatch( + uno_Interface * pUnoI, + const typelib_TypeDescription * pMemberTD, + void * pReturn, + void * pArgs[], + uno_Any ** ppException ) +{ + // is my surrogate + bridges::cpp_uno::shared::UnoInterfaceProxy * pThis + = static_cast< bridges::cpp_uno::shared::UnoInterfaceProxy * >(pUnoI); +#if OSL_DEBUG_LEVEL > 0 + typelib_InterfaceTypeDescription * pTypeDescr = pThis->pTypeDescr; +#endif + + switch (pMemberTD->eTypeClass) + { + case typelib_TypeClass_INTERFACE_ATTRIBUTE: + { +#if OSL_DEBUG_LEVEL > 0 + // determine vtable call index + sal_Int32 nMemberPos = reinterpret_cast<typelib_InterfaceMemberTypeDescription const *>(pMemberTD)->nPosition; + assert(nMemberPos < pTypeDescr->nAllMembers); +#endif + VtableSlot aVtableSlot( + getVtableSlot( + reinterpret_cast< + typelib_InterfaceAttributeTypeDescription const * >( + pMemberTD))); + if ( pReturn ) + { + // is GET + cpp_call( + pThis, aVtableSlot, + reinterpret_cast<typelib_InterfaceAttributeTypeDescription const *>(pMemberTD)->pAttributeTypeRef, + 0, nullptr, // no params + pReturn, pArgs, ppException ); + } + else + { + // is SET + typelib_MethodParameter aParam; + aParam.pTypeRef = + reinterpret_cast<typelib_InterfaceAttributeTypeDescription const *>(pMemberTD)->pAttributeTypeRef; + aParam.bIn = true; + aParam.bOut = false; + + typelib_TypeDescriptionReference * pReturnTypeRef = nullptr; + OUString aVoidName("void"); + typelib_typedescriptionreference_new( + &pReturnTypeRef, typelib_TypeClass_VOID, aVoidName.pData ); + + aVtableSlot.index += 1; // get, then set method + cpp_call( + pThis, aVtableSlot, + pReturnTypeRef, + 1, &aParam, + pReturn, pArgs, ppException ); + + typelib_typedescriptionreference_release( pReturnTypeRef ); + } + + break; + } + case typelib_TypeClass_INTERFACE_METHOD: + { +#if OSL_DEBUG_LEVEL > 0 + // determine vtable call index + sal_Int32 nMemberPos = reinterpret_cast<typelib_InterfaceMemberTypeDescription const *>(pMemberTD)->nPosition; + assert(nMemberPos < pTypeDescr->nAllMembers); +#endif + VtableSlot aVtableSlot( + getVtableSlot( + reinterpret_cast< + typelib_InterfaceMethodTypeDescription const * >( + pMemberTD))); + + switch (aVtableSlot.index) + { + case 1: // acquire UNO interface + (*pUnoI->acquire)( pUnoI ); + *ppException = nullptr; + break; + case 2: // release UNO interface + (*pUnoI->release)( pUnoI ); + *ppException = nullptr; + break; + case 0: // queryInterface() opt + { + typelib_TypeDescription * pTD = nullptr; + TYPELIB_DANGER_GET( &pTD, static_cast< uno::Type * >( pArgs[0] )->getTypeLibType() ); + + if ( pTD ) + { + uno_Interface * pInterface = nullptr; + (*pThis->getBridge()->getUnoEnv()->getRegisteredInterface)( + pThis->getBridge()->getUnoEnv(), + reinterpret_cast<void **>(&pInterface), pThis->oid.pData, reinterpret_cast<typelib_InterfaceTypeDescription *>(pTD) ); + + if ( pInterface ) + { + ::uno_any_construct( + static_cast< uno_Any * >( pReturn ), + &pInterface, pTD, nullptr ); + (*pInterface->release)( pInterface ); + TYPELIB_DANGER_RELEASE( pTD ); + *ppException = nullptr; + break; + } + TYPELIB_DANGER_RELEASE( pTD ); + } + [[fallthrough]]; // else perform queryInterface() + } + default: + typelib_InterfaceMethodTypeDescription const* pMethodTD + = reinterpret_cast<typelib_InterfaceMethodTypeDescription const *>(pMemberTD); + + if (!cpp_call(pThis, aVtableSlot, pMethodTD->pReturnTypeRef, pMethodTD->nParams, + pMethodTD->pParams, pReturn, pArgs, ppException)) + { + uno::RuntimeException aExc( "Too many parameters!" ); + + uno::Type const & rExcType = cppu::UnoType<decltype(aExc)>::get(); + ::uno_type_any_construct(*ppException, &aExc, rExcType.getTypeLibType(), nullptr); + } + } + break; + } + default: + { + uno::RuntimeException aExc("Illegal member type description!", uno::Reference<uno::XInterface>()); + + uno::Type const & rExcType = cppu::UnoType<decltype(aExc)>::get(); + // binary identical null reference + ::uno_type_any_construct(*ppException, &aExc, rExcType.getTypeLibType(), nullptr); + } + } +} + +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |