/************************************************************** * * 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 #include "share.hxx" using namespace ::rtl; using namespace ::com::sun::star::uno; namespace CPPU_CURRENT_NAMESPACE { void dummy_can_throw_anything( char const * ); //================================================================================================== // The call instruction within the asm section of callVirtualMethod may throw // exceptions. So that the compiler handles this correctly, it is important // that (a) callVirtualMethod might call dummy_can_throw_anything (although this // never happens at runtime), which in turn can throw exceptions, and (b) // callVirtualMethod is not inlined at its call site (so that any exceptions are // caught which are thrown from the instruction calling callVirtualMethod): void callVirtualMethod( void * pThis, sal_Int32 nVtableIndex, void * pRegisterReturn, typelib_TypeClass eReturnType, sal_Int32 * pStackLongs, sal_Int32 nStackLongs ) __attribute__((noinline)); void callVirtualMethod( void * pThis, sal_Int32 nVtableIndex, void * pRegisterReturn, typelib_TypeClass eReturnType, sal_Int32 * pStackLongs, sal_Int32 nStackLongs ) { // parameter list is mixed list of * and values // reference parameters are pointers OSL_ENSURE( pStackLongs && pThis, "### null ptr!" ); OSL_ENSURE( (sizeof(void *) == 4) && (sizeof(sal_Int32) == 4), "### unexpected size of int!" ); OSL_ENSURE( nStackLongs && pStackLongs, "### no stack in callVirtualMethod !" ); // never called if (! pThis) dummy_can_throw_anything("xxx"); // address something volatile long edx = 0, eax = 0; // for register returns void * stackptr; asm volatile ( "mov %%esp, %6\n\t" // copy values "mov %0, %%eax\n\t" "mov %%eax, %%edx\n\t" "dec %%edx\n\t" "shl $2, %%edx\n\t" "add %1, %%edx\n" "Lcopy:\n\t" "pushl 0(%%edx)\n\t" "sub $4, %%edx\n\t" "dec %%eax\n\t" "jne Lcopy\n\t" // do the actual call "mov %2, %%edx\n\t" "mov 0(%%edx), %%edx\n\t" "mov %3, %%eax\n\t" "shl $2, %%eax\n\t" "add %%eax, %%edx\n\t" "mov 0(%%edx), %%edx\n\t" "call *%%edx\n\t" // save return registers "mov %%eax, %4\n\t" "mov %%edx, %5\n\t" // cleanup stack "mov %6, %%esp\n\t" : : "m"(nStackLongs), "m"(pStackLongs), "m"(pThis), "m"(nVtableIndex), "m"(eax), "m"(edx), "m"(stackptr) : "eax", "edx" ); switch( eReturnType ) { case typelib_TypeClass_HYPER: case typelib_TypeClass_UNSIGNED_HYPER: ((long*)pRegisterReturn)[1] = edx; case typelib_TypeClass_LONG: case typelib_TypeClass_UNSIGNED_LONG: case typelib_TypeClass_CHAR: case typelib_TypeClass_ENUM: ((long*)pRegisterReturn)[0] = eax; break; case typelib_TypeClass_SHORT: case typelib_TypeClass_UNSIGNED_SHORT: *(unsigned short*)pRegisterReturn = eax; break; case typelib_TypeClass_BOOLEAN: case typelib_TypeClass_BYTE: *(unsigned char*)pRegisterReturn = eax; break; case typelib_TypeClass_FLOAT: asm ( "fstps %0" : : "m"(*(char *)pRegisterReturn) ); break; case typelib_TypeClass_DOUBLE: asm ( "fstpl %0\n\t" : : "m"(*(char *)pRegisterReturn) ); break; } } //================================================================================================== static void cpp_call( cppu_unoInterfaceProxy * pThis, sal_Int32 nVtableCall, typelib_TypeDescriptionReference * pReturnTypeRef, sal_Int32 nParams, typelib_MethodParameter * pParams, void * pUnoReturn, void * pUnoArgs[], uno_Any ** ppUnoExc ) { // max space for: [complex ret ptr], values|ptr ... char * pCppStack = (char *)alloca( sizeof(sal_Int32) + ((nParams+2) * sizeof(sal_Int64)) ); char * pCppStackStart = pCppStack; // return typelib_TypeDescription * pReturnTypeDescr = 0; TYPELIB_DANGER_GET( &pReturnTypeDescr, pReturnTypeRef ); OSL_ENSURE( pReturnTypeDescr, "### expected return type description!" ); void * pCppReturn = 0; // if != 0 && != pUnoReturn, needs reconversion if (pReturnTypeDescr) { if (cppu_isSimpleType( pReturnTypeDescr )) { pCppReturn = pUnoReturn; // direct way for simple types } else { // complex return via ptr pCppReturn = *(void **)pCppStack = (cppu_relatesToInterface( pReturnTypeDescr ) ? alloca( pReturnTypeDescr->nSize ) : pUnoReturn); // direct way pCppStack += sizeof(void *); } } // push this *(void**)pCppStack = pThis->pCppI; pCppStack += sizeof( void* ); // stack space OSL_ENSURE( sizeof(void *) == sizeof(sal_Int32), "### unexpected size!" ); // args void ** pCppArgs = (void **)alloca( 3 * sizeof(void *) * nParams ); // indizes of values this have to be converted (interface conversion cpp<=>uno) sal_Int32 * pTempIndizes = (sal_Int32 *)(pCppArgs + nParams); // type descriptions for reconversions typelib_TypeDescription ** ppTempParamTypeDescr = (typelib_TypeDescription **)(pCppArgs + (2 * 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 && cppu_isSimpleType( pParamTypeDescr )) { uno_copyAndConvertData( pCppArgs[nPos] = pCppStack, pUnoArgs[nPos], pParamTypeDescr, &pThis->pBridge->aUno2Cpp ); switch (pParamTypeDescr->eTypeClass) { case typelib_TypeClass_HYPER: case typelib_TypeClass_UNSIGNED_HYPER: case typelib_TypeClass_DOUBLE: pCppStack += sizeof(sal_Int32); // extra long } // no longer needed TYPELIB_DANGER_RELEASE( pParamTypeDescr ); } else // ptr to complex value | ref { if (! rParam.bIn) // is pure out { // cpp out is constructed mem, uno out is not! uno_constructData( *(void **)pCppStack = pCppArgs[nPos] = alloca( pParamTypeDescr->nSize ), pParamTypeDescr ); pTempIndizes[nTempIndizes] = nPos; // default constructed for cpp call // will be released at reconversion ppTempParamTypeDescr[nTempIndizes++] = pParamTypeDescr; } // is in/inout else if (cppu_relatesToInterface( pParamTypeDescr )) { uno_copyAndConvertData( *(void **)pCppStack = pCppArgs[nPos] = alloca( pParamTypeDescr->nSize ), pUnoArgs[nPos], pParamTypeDescr, &pThis->pBridge->aUno2Cpp ); pTempIndizes[nTempIndizes] = nPos; // has to be reconverted // will be released at reconversion ppTempParamTypeDescr[nTempIndizes++] = pParamTypeDescr; } else // direct way { *(void **)pCppStack = pCppArgs[nPos] = pUnoArgs[nPos]; // no longer needed TYPELIB_DANGER_RELEASE( pParamTypeDescr ); } } pCppStack += sizeof(sal_Int32); // standard parameter length } try { OSL_ENSURE( !( (pCppStack - pCppStackStart ) & 3), "UNALIGNED STACK !!! (Please DO panic)" ); callVirtualMethod( pThis->pCppI, nVtableCall, pCppReturn, pReturnTypeDescr->eTypeClass, (sal_Int32 *)pCppStackStart, (pCppStack - pCppStackStart) / sizeof(sal_Int32) ); // NO exception occured... *ppUnoExc = 0; // reconvert temporary params for ( ; nTempIndizes--; ) { sal_Int32 nIndex = pTempIndizes[nTempIndizes]; typelib_TypeDescription * pParamTypeDescr = ppTempParamTypeDescr[nTempIndizes]; if (pParams[nIndex].bIn) { if (pParams[nIndex].bOut) // inout { uno_destructData( pUnoArgs[nIndex], pParamTypeDescr, 0 ); // destroy uno value uno_copyAndConvertData( pUnoArgs[nIndex], pCppArgs[nIndex], pParamTypeDescr, &pThis->pBridge->aCpp2Uno ); } } else // pure out { uno_copyAndConvertData( pUnoArgs[nIndex], pCppArgs[nIndex], pParamTypeDescr, &pThis->pBridge->aCpp2Uno ); } // destroy temp cpp param => cpp: every param was constructed uno_destructData( pCppArgs[nIndex], pParamTypeDescr, cpp_release ); TYPELIB_DANGER_RELEASE( pParamTypeDescr ); } // return value if (pCppReturn && pUnoReturn != pCppReturn) { uno_copyAndConvertData( pUnoReturn, pCppReturn, pReturnTypeDescr, &pThis->pBridge->aCpp2Uno ); uno_destructData( pCppReturn, pReturnTypeDescr, cpp_release ); } } catch (...) { // fill uno exception fillUnoException( __cxa_get_globals()->caughtExceptions, *ppUnoExc, &pThis->pBridge->aCpp2Uno ); // temporary params for ( ; nTempIndizes--; ) { sal_Int32 nIndex = pTempIndizes[nTempIndizes]; // destroy temp cpp param => cpp: every param was constructed uno_destructData( pCppArgs[nIndex], ppTempParamTypeDescr[nTempIndizes], cpp_release ); TYPELIB_DANGER_RELEASE( ppTempParamTypeDescr[nTempIndizes] ); } // return type if (pReturnTypeDescr) TYPELIB_DANGER_RELEASE( pReturnTypeDescr ); } } //================================================================================================== void SAL_CALL cppu_unoInterfaceProxy_dispatch( uno_Interface * pUnoI, const typelib_TypeDescription * pMemberDescr, void * pReturn, void * pArgs[], uno_Any ** ppException ) throw () { // is my surrogate cppu_unoInterfaceProxy * pThis = (cppu_unoInterfaceProxy *)pUnoI; typelib_InterfaceTypeDescription * pTypeDescr = pThis->pTypeDescr; switch (pMemberDescr->eTypeClass) { case typelib_TypeClass_INTERFACE_ATTRIBUTE: { // determine vtable call index sal_Int32 nMemberPos = ((typelib_InterfaceMemberTypeDescription *)pMemberDescr)->nPosition; OSL_ENSURE( nMemberPos < pTypeDescr->nAllMembers, "### member pos out of range!" ); sal_Int32 nVtableCall = pTypeDescr->pMapMemberIndexToFunctionIndex[nMemberPos]; OSL_ENSURE( nVtableCall < pTypeDescr->nMapFunctionIndexToMemberIndex, "### illegal vtable index!" ); if (pReturn) { // dependent dispatch cpp_call( pThis, nVtableCall, ((typelib_InterfaceAttributeTypeDescription *)pMemberDescr)->pAttributeTypeRef, 0, 0, // no params pReturn, pArgs, ppException ); } else { // is SET typelib_MethodParameter aParam; aParam.pTypeRef = ((typelib_InterfaceAttributeTypeDescription *)pMemberDescr)->pAttributeTypeRef; aParam.bIn = sal_True; aParam.bOut = sal_False; typelib_TypeDescriptionReference * pReturnTypeRef = 0; OUString aVoidName( RTL_CONSTASCII_USTRINGPARAM("void") ); typelib_typedescriptionreference_new( &pReturnTypeRef, typelib_TypeClass_VOID, aVoidName.pData ); // dependent dispatch cpp_call( pThis, nVtableCall +1, // get, then set method pReturnTypeRef, 1, &aParam, pReturn, pArgs, ppException ); typelib_typedescriptionreference_release( pReturnTypeRef ); } break; } case typelib_TypeClass_INTERFACE_METHOD: { // determine vtable call index sal_Int32 nMemberPos = ((typelib_InterfaceMemberTypeDescription *)pMemberDescr)->nPosition; OSL_ENSURE( nMemberPos < pTypeDescr->nAllMembers, "### member pos out of range!" ); sal_Int32 nVtableCall = pTypeDescr->pMapMemberIndexToFunctionIndex[nMemberPos]; OSL_ENSURE( nVtableCall < pTypeDescr->nMapFunctionIndexToMemberIndex, "### illegal vtable index!" ); switch (nVtableCall) { // standard calls case 1: // acquire uno interface (*pUnoI->acquire)( pUnoI ); *ppException = 0; break; case 2: // release uno interface (*pUnoI->release)( pUnoI ); *ppException = 0; break; case 0: // queryInterface() opt { typelib_TypeDescription * pTD = 0; TYPELIB_DANGER_GET( &pTD, reinterpret_cast< Type * >( pArgs[0] )->getTypeLibType() ); if (pTD) { uno_Interface * pInterface = 0; (*pThis->pBridge->pUnoEnv->getRegisteredInterface)( pThis->pBridge->pUnoEnv, (void **)&pInterface, pThis->oid.pData, (typelib_InterfaceTypeDescription *)pTD ); if (pInterface) { ::uno_any_construct( reinterpret_cast< uno_Any * >( pReturn ), &pInterface, pTD, 0 ); (*pInterface->release)( pInterface ); TYPELIB_DANGER_RELEASE( pTD ); *ppException = 0; break; } TYPELIB_DANGER_RELEASE( pTD ); } } // else perform queryInterface() default: // dependent dispatch cpp_call( pThis, nVtableCall, ((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->pReturnTypeRef, ((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->nParams, ((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->pParams, pReturn, pArgs, ppException ); } break; } default: { ::com::sun::star::uno::RuntimeException aExc( OUString( RTL_CONSTASCII_USTRINGPARAM("illegal member type description!") ), ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface >() ); Type const & rExcType = ::getCppuType( &aExc ); // binary identical null reference ::uno_type_any_construct( *ppException, &aExc, rExcType.getTypeLibType(), 0 ); } } } }