/************************************************************** * * 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 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the License. * *************************************************************/ // MARKER(update_precomp.py): autogen include statement, do not remove #include "precompiled_bridges.hxx" #include #include #include #include #include "bridges/cpp_uno/shared/bridge.hxx" #include "bridges/cpp_uno/shared/cppinterfaceproxy.hxx" #include "bridges/cpp_uno/shared/types.hxx" #include "bridges/cpp_uno/shared/vtablefactory.hxx" #include "msci.hxx" using namespace ::com::sun::star::uno; namespace { //================================================================================================== static inline typelib_TypeClass cpp2uno_call( bridges::cpp_uno::shared::CppInterfaceProxy * pThis, const typelib_TypeDescription * pMemberTypeDescr, typelib_TypeDescriptionReference * pReturnTypeRef, // 0 indicates void return sal_Int32 nParams, typelib_MethodParameter * pParams, void ** pCallStack, sal_Int64 * pRegisterReturn /* space for register return */ ) { // pCallStack: ret, this, [complex return ptr], params char * pCppStack = (char *)(pCallStack +2); // return typelib_TypeDescription * pReturnTypeDescr = 0; if (pReturnTypeRef) { TYPELIB_DANGER_GET( &pReturnTypeDescr, pReturnTypeRef ); } void * pUnoReturn = 0; void * pCppReturn = 0; // complex return ptr: if != 0 && != pUnoReturn, reconversion need if (pReturnTypeDescr) { if (bridges::cpp_uno::shared::isSimpleType( pReturnTypeDescr )) { pUnoReturn = pRegisterReturn; // direct way for simple types } else // complex return via ptr (pCppReturn) { pCppReturn = *(void **)pCppStack; pCppStack += sizeof(void *); pUnoReturn = (bridges::cpp_uno::shared::relatesToInterfaceType( pReturnTypeDescr ) ? alloca( pReturnTypeDescr->nSize ) : pCppReturn); // direct way } } // stack space OSL_ENSURE( sizeof(void *) == sizeof(sal_Int32), "### unexpected size!" ); // parameters void ** pUnoArgs = (void **)alloca( 4 * sizeof(void *) * nParams ); void ** pCppArgs = pUnoArgs + nParams; // indizes of values this have to be converted (interface conversion cpp<=>uno) sal_Int32 * pTempIndizes = (sal_Int32 *)(pUnoArgs + (2 * nParams)); // type descriptions for reconversions typelib_TypeDescription ** ppTempParamTypeDescr = (typelib_TypeDescription **)(pUnoArgs + (3 * nParams)); sal_Int32 nTempIndizes = 0; for ( sal_Int32 nPos = 0; nPos < nParams; ++nPos ) { const typelib_MethodParameter & rParam = pParams[nPos]; typelib_TypeDescription * pParamTypeDescr = 0; TYPELIB_DANGER_GET( &pParamTypeDescr, rParam.pTypeRef ); if (!rParam.bOut && bridges::cpp_uno::shared::isSimpleType( pParamTypeDescr )) // value { pCppArgs[nPos] = pCppStack; pUnoArgs[nPos] = pCppStack; switch (pParamTypeDescr->eTypeClass) { case typelib_TypeClass_HYPER: case typelib_TypeClass_UNSIGNED_HYPER: case typelib_TypeClass_DOUBLE: pCppStack += sizeof(sal_Int32); // extra long break; default: break; } // no longer needed TYPELIB_DANGER_RELEASE( pParamTypeDescr ); } else // ptr to complex value | ref { pCppArgs[nPos] = *(void **)pCppStack; if (! rParam.bIn) // is pure out { // uno out is unconstructed mem! pUnoArgs[nPos] = alloca( pParamTypeDescr->nSize ); pTempIndizes[nTempIndizes] = nPos; // will be released at reconversion ppTempParamTypeDescr[nTempIndizes++] = pParamTypeDescr; } // is in/inout else if (bridges::cpp_uno::shared::relatesToInterfaceType( pParamTypeDescr )) { ::uno_copyAndConvertData( pUnoArgs[nPos] = alloca( pParamTypeDescr->nSize ), *(void **)pCppStack, pParamTypeDescr, pThis->getBridge()->getCpp2Uno() ); pTempIndizes[nTempIndizes] = nPos; // has to be reconverted // will be released at reconversion ppTempParamTypeDescr[nTempIndizes++] = pParamTypeDescr; } else // direct way { pUnoArgs[nPos] = *(void **)pCppStack; // no longer needed TYPELIB_DANGER_RELEASE( pParamTypeDescr ); } } pCppStack += sizeof(sal_Int32); // standard parameter length } // ExceptionHolder uno_Any aUnoExc; // Any will be constructed by callee uno_Any * pUnoExc = &aUnoExc; // invoke uno dispatch call (*pThis->getUnoI()->pDispatcher)( pThis->getUnoI(), pMemberTypeDescr, pUnoReturn, pUnoArgs, &pUnoExc ); // in case an exception occured... if (pUnoExc) { // destruct temporary in/inout params while (nTempIndizes--) { sal_Int32 nIndex = pTempIndizes[nTempIndizes]; if (pParams[nIndex].bIn) // is in/inout => was constructed { ::uno_destructData( pUnoArgs[nIndex], ppTempParamTypeDescr[nTempIndizes], 0 ); } TYPELIB_DANGER_RELEASE( ppTempParamTypeDescr[nTempIndizes] ); } if (pReturnTypeDescr) { TYPELIB_DANGER_RELEASE( pReturnTypeDescr ); } CPPU_CURRENT_NAMESPACE::msci_raiseException( &aUnoExc, pThis->getBridge()->getUno2Cpp() ); // has to destruct the any // is here for dummy return typelib_TypeClass_VOID; } else // else no exception occured... { // temporary params while (nTempIndizes--) { sal_Int32 nIndex = pTempIndizes[nTempIndizes]; typelib_TypeDescription * pParamTypeDescr = ppTempParamTypeDescr[nTempIndizes]; if (pParams[nIndex].bOut) // inout/out { // convert and assign ::uno_destructData( pCppArgs[nIndex], pParamTypeDescr, cpp_release ); ::uno_copyAndConvertData( pCppArgs[nIndex], pUnoArgs[nIndex], pParamTypeDescr, pThis->getBridge()->getUno2Cpp() ); } // destroy temp uno param ::uno_destructData( pUnoArgs[nIndex], pParamTypeDescr, 0 ); TYPELIB_DANGER_RELEASE( pParamTypeDescr ); } // return if (pCppReturn) // has complex return { if (pUnoReturn != pCppReturn) // needs reconversion { ::uno_copyAndConvertData( pCppReturn, pUnoReturn, pReturnTypeDescr, pThis->getBridge()->getUno2Cpp() ); // destroy temp uno return ::uno_destructData( pUnoReturn, pReturnTypeDescr, 0 ); } // complex return ptr is set to eax *(void **)pRegisterReturn = pCppReturn; } if (pReturnTypeDescr) { typelib_TypeClass eRet = (typelib_TypeClass)pReturnTypeDescr->eTypeClass; TYPELIB_DANGER_RELEASE( pReturnTypeDescr ); return eRet; } else return typelib_TypeClass_VOID; } } //================================================================================================== static typelib_TypeClass __cdecl cpp_mediate( void ** pCallStack, sal_Int32 nFunctionIndex, sal_Int32 nVtableOffset, sal_Int64 * pRegisterReturn /* space for register return */ ) { OSL_ENSURE( sizeof(sal_Int32)==sizeof(void *), "### unexpected!" ); // pCallStack: ret adr, this, [ret *], params void * pThis = static_cast< char * >(pCallStack[1]) - nVtableOffset; bridges::cpp_uno::shared::CppInterfaceProxy * pCppI = bridges::cpp_uno::shared::CppInterfaceProxy::castInterfaceToProxy( pThis); typelib_InterfaceTypeDescription * pTypeDescr = pCppI->getTypeDescr(); OSL_ENSURE( nFunctionIndex < pTypeDescr->nMapFunctionIndexToMemberIndex, "### illegal vtable index!" ); if (nFunctionIndex >= pTypeDescr->nMapFunctionIndexToMemberIndex) { throw RuntimeException( rtl::OUString( RTL_CONSTASCII_USTRINGPARAM("illegal vtable index!") ), (XInterface *)pThis ); } // determine called method sal_Int32 nMemberPos = pTypeDescr->pMapFunctionIndexToMemberIndex[nFunctionIndex]; OSL_ENSURE( nMemberPos < pTypeDescr->nAllMembers, "### illegal member index!" ); TypeDescription aMemberDescr( pTypeDescr->ppAllMembers[nMemberPos] ); typelib_TypeClass eRet; switch (aMemberDescr.get()->eTypeClass) { case typelib_TypeClass_INTERFACE_ATTRIBUTE: { if (pTypeDescr->pMapMemberIndexToFunctionIndex[nMemberPos] == nFunctionIndex) { // is GET method eRet = cpp2uno_call( pCppI, aMemberDescr.get(), ((typelib_InterfaceAttributeTypeDescription *)aMemberDescr.get())->pAttributeTypeRef, 0, 0, // no params pCallStack, pRegisterReturn ); } else { // is SET method typelib_MethodParameter aParam; aParam.pTypeRef = ((typelib_InterfaceAttributeTypeDescription *)aMemberDescr.get())->pAttributeTypeRef; aParam.bIn = sal_True; aParam.bOut = sal_False; eRet = cpp2uno_call( pCppI, aMemberDescr.get(), 0, // indicates void return 1, &aParam, pCallStack, pRegisterReturn ); } 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 { typelib_TypeDescription * pTD = 0; TYPELIB_DANGER_GET( &pTD, reinterpret_cast< Type * >( pCallStack[3] )->getTypeLibType() ); if (pTD) { XInterface * pInterface = 0; (*pCppI->getBridge()->getCppEnv()->getRegisteredInterface)( pCppI->getBridge()->getCppEnv(), (void **)&pInterface, pCppI->getOid().pData, (typelib_InterfaceTypeDescription *)pTD ); if (pInterface) { ::uno_any_construct( reinterpret_cast< uno_Any * >( pCallStack[2] ), &pInterface, pTD, cpp_acquire ); pInterface->release(); TYPELIB_DANGER_RELEASE( pTD ); *(void **)pRegisterReturn = pCallStack[2]; eRet = typelib_TypeClass_ANY; break; } TYPELIB_DANGER_RELEASE( pTD ); } } // else perform queryInterface() default: eRet = cpp2uno_call( pCppI, aMemberDescr.get(), ((typelib_InterfaceMethodTypeDescription *)aMemberDescr.get())->pReturnTypeRef, ((typelib_InterfaceMethodTypeDescription *)aMemberDescr.get())->nParams, ((typelib_InterfaceMethodTypeDescription *)aMemberDescr.get())->pParams, pCallStack, pRegisterReturn ); } break; } default: { throw RuntimeException( rtl::OUString( RTL_CONSTASCII_USTRINGPARAM("no member description found!") ), (XInterface *)pThis ); // is here for dummy eRet = typelib_TypeClass_VOID; } } return eRet; } //================================================================================================== /** * is called on incoming vtable calls * (called by asm snippets) */ static __declspec(naked) void __cdecl cpp_vtable_call(void) { __asm { sub esp, 8 // space for immediate return type push esp push edx // vtable offset push eax // function index mov eax, esp add eax, 20 push eax // original stack ptr call cpp_mediate add esp, 16 cmp eax, typelib_TypeClass_FLOAT je Lfloat cmp eax, typelib_TypeClass_DOUBLE je Ldouble cmp eax, typelib_TypeClass_HYPER je Lhyper cmp eax, typelib_TypeClass_UNSIGNED_HYPER je Lhyper // rest is eax pop eax add esp, 4 ret Lhyper: pop eax pop edx ret Lfloat: fld dword ptr [esp] add esp, 8 ret Ldouble: fld qword ptr [esp] add esp, 8 ret } } //================================================================================================== int const codeSnippetSize = 16; unsigned char * codeSnippet( unsigned char * code, sal_Int32 functionIndex, sal_Int32 vtableOffset) { unsigned char * p = code; OSL_ASSERT(sizeof (sal_Int32) == 4); // mov eax, functionIndex: *p++ = 0xB8; *reinterpret_cast< sal_Int32 * >(p) = functionIndex; p += sizeof (sal_Int32); // mov edx, vtableOffset: *p++ = 0xBA; *reinterpret_cast< sal_Int32 * >(p) = vtableOffset; p += sizeof (sal_Int32); // jmp rel32 cpp_vtable_call: *p++ = 0xE9; *reinterpret_cast< sal_Int32 * >(p) = ((unsigned char *) cpp_vtable_call) - p - sizeof (sal_Int32); p += sizeof (sal_Int32); OSL_ASSERT(p - code <= codeSnippetSize); return code + codeSnippetSize; } } struct bridges::cpp_uno::shared::VtableFactory::Slot { void * fn; }; bridges::cpp_uno::shared::VtableFactory::Slot * bridges::cpp_uno::shared::VtableFactory::mapBlockToVtable(void * block) { return static_cast< Slot * >(block) + 1; } sal_Size bridges::cpp_uno::shared::VtableFactory::getBlockSize( sal_Int32 slotCount) { return (slotCount + 1) * sizeof (Slot) + slotCount * codeSnippetSize; } bridges::cpp_uno::shared::VtableFactory::Slot * bridges::cpp_uno::shared::VtableFactory::initializeBlock( void * block, sal_Int32 slotCount) { struct Rtti { sal_Int32 n0, n1, n2; type_info * rtti; Rtti(): n0(0), n1(0), n2(0), rtti(CPPU_CURRENT_NAMESPACE::msci_getRTTI( rtl::OUString(RTL_CONSTASCII_USTRINGPARAM( "com.sun.star.uno.XInterface")))) {} }; static Rtti rtti; Slot * slots = mapBlockToVtable(block); slots[-1].fn = &rtti; return slots + slotCount; } unsigned char * bridges::cpp_uno::shared::VtableFactory::addLocalFunctions( Slot ** slots, unsigned char * code, typelib_InterfaceTypeDescription const *, sal_Int32 functionOffset, sal_Int32 functionCount, sal_Int32 vtableOffset) { (*slots) -= functionCount; Slot * s = *slots; for (sal_Int32 i = 0; i < functionCount; ++i) { (s++)->fn = code; code = codeSnippet(code, functionOffset++, vtableOffset); } return code; } void bridges::cpp_uno::shared::VtableFactory::flushCode( unsigned char const *, unsigned char const *) {}