/************************************************************** * * 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/types.hxx" #include "bridges/cpp_uno/shared/unointerfaceproxy.hxx" #include "bridges/cpp_uno/shared/vtables.hxx" #include "share.hxx" using namespace ::rtl; using namespace ::com::sun::star::uno; namespace { //================================================================================================== static void callVirtualMethod( void * pAdjustedThisPtr, sal_Int32 nVtableIndex, void * pRegisterReturn, typelib_TypeClass eReturnType, char * pPT, sal_Int32 * pStackLongs, sal_Int32 /* nStackLongs */) { // parameter list is mixed list of * and values // reference parameters are pointers // the basic idea here is to use gpr[8] as a storage area for // the future values of registers r3 to r10 needed for the call, // and similarly fpr[13] as a storage area for the future values // of floating point registers f1 to f13 unsigned long * mfunc; // actual function to be invoked void (*ptr)(); int gpr[8]; // storage for gpregisters, map to r3-r10 int off; // offset used to find function double fpr[13]; // storage for fpregisters, map to f1-f13 int n; // number of gprs mapped so far int f; // number of fprs mapped so far volatile long *p; // pointer to parameter overflow area int c; // character of parameter type being decoded volatile double dret; // temporary function return values volatile int iret, iret2; // Because of the Power PC calling conventions we could be passing // parameters in both register types and on the stack. To create the // stack parameter area we need we now simply allocate local // variable storage param[] that is at least the size of the parameter stack // (more than enough space) which we can overwrite the parameters into. // Note: This keeps us from having to decode the signature twice and // prevents problems with later local variables. // FIXME: I do not believe the following is true but we will keep the // FIXME: extra space just to be safe until proven otherwise // Note: could require up to 2*nStackLongs words of parameter stack area // if the call has many float parameters (i.e. floats take up only 1 // word on the stack but take 2 words in parameter area in the // stack frame . // unsigned long param[(2*nStackLongs)]; /* now begin to load the C++ function arguments into storage */ n = 0; f = 0; /* set up a pointer to the stack parameter area */ __asm__ ( "addi %0,r1,24" : "=r" (p) : /* no inputs */ ); // #i94421#, work around compiler error: volatile long * pCopy = p; (void) pCopy; // avoid warning about unused variable // never called // if (! pAdjustedThisPtr )CPPU_CURRENT_NAMESPACE::dummy_can_throw_anything("xxx"); // address something // now we need to parse the entire signature string // until we get the END indicator // treat complex return pointer like any other parameter // parse the argument list up to the ending ) while (*pPT != 'X') { c = *pPT; switch (c) { case 'D': /* type is double */ if (f < 13) { fpr[f++] = *((double *)pStackLongs); /* store in register */ n+=2; p+=2; } else { *p++ = *pStackLongs; /* or on the parameter stack */ *p++ = *(pStackLongs + 1); } pStackLongs += 2; break; case 'F': /* type is float */ /* floats are stored as 1 32 bit word on param stack */ if (f < 13) { fpr[f++] = *((float *)pStackLongs); n+=1; p++; } else { *((float *)p) = *((float *)pStackLongs); p += 1; } pStackLongs += 1; break; case 'H': /* type is long long */ if (n < 8) { gpr[n++] = *pStackLongs; p++; } else *p++ = *pStackLongs; if(n < 8) { gpr[n++] = *(pStackLongs+1); p++; } else *p++ = *(pStackLongs+1); pStackLongs += 2; break; case 'S': if (n < 8) { gpr[n++] = *((unsigned short*)pStackLongs); p++; } else { *p++ = *((unsigned short *)pStackLongs); } pStackLongs += 1; break; case 'B': if (n < 8) { gpr[n++] = *((char *)pStackLongs); p++; } else { *p++ = *((char *)pStackLongs); } pStackLongs += 1; break; default: if (n < 8) { gpr[n++] = *pStackLongs; p++; } else { *p++ = *pStackLongs; } pStackLongs += 1; break; } pPT++; } /* figure out the address of the function we need to invoke */ off = nVtableIndex; off = off * 4; // 4 bytes per slot mfunc = *((unsigned long **)pAdjustedThisPtr); // get the address of the vtable mfunc = (unsigned long *)((char *)mfunc + off); // get the address from the vtable entry at offset mfunc = *((unsigned long **)mfunc); // the function is stored at the address ptr = (void (*)())mfunc; /* Set up the machine registers and invoke the function */ __asm__ __volatile__ ( "lwz r3, 0(%0)\n\t" "lwz r4, 4(%0)\n\t" "lwz r5, 8(%0)\n\t" "lwz r6, 12(%0)\n\t" "lwz r7, 16(%0)\n\t" "lwz r8, 20(%0)\n\t" "lwz r9, 24(%0)\n\t" "lwz r10, 28(%0)\n\t" "lfd f1, 0(%1)\n\t" "lfd f2, 8(%1)\n\t" "lfd f3, 16(%1)\n\t" "lfd f4, 24(%1)\n\t" "lfd f5, 32(%1)\n\t" "lfd f6, 40(%1)\n\t" "lfd f7, 48(%1)\n\t" "lfd f8, 56(%1)\n\t" "lfd f9, 64(%1)\n\t" "lfd f10, 72(%1)\n\t" "lfd f11, 80(%1)\n\t" "lfd f12, 88(%1)\n\t" "lfd f13, 96(%1)\n\t" : : "r" (gpr), "r" (fpr) : "r0", "r3", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "f1", "f2", "f3", "f4", "f5", "f6", "f7", "f8", "f9", "f10", "f11", "f12", "f13" ); (*ptr)(); __asm__ __volatile__ ( "stw r3, %1\n\t" "stw r4, %2\n\t" "stfd f1, %0\n\t" : : "m" (dret), "m" (iret), "m" (iret2) ); switch( eReturnType ) { case typelib_TypeClass_HYPER: case typelib_TypeClass_UNSIGNED_HYPER: ((long*)pRegisterReturn)[1] = iret2; // fall thru on purpose case typelib_TypeClass_LONG: case typelib_TypeClass_UNSIGNED_LONG: case typelib_TypeClass_ENUM: ((long*)pRegisterReturn)[0] = iret; break; case typelib_TypeClass_CHAR: case typelib_TypeClass_SHORT: case typelib_TypeClass_UNSIGNED_SHORT: *(unsigned short*)pRegisterReturn = (unsigned short)iret; break; case typelib_TypeClass_BOOLEAN: case typelib_TypeClass_BYTE: *(unsigned char*)pRegisterReturn = (unsigned char)iret; break; case typelib_TypeClass_FLOAT: *(float*)pRegisterReturn = (float)dret; break; case typelib_TypeClass_DOUBLE: *(double*)pRegisterReturn = dret; break; default: break; } } //================================================================================================== static void 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 ) { // max space for: [complex ret ptr], values|ptr ... char * pCppStack = (char *)alloca( sizeof(sal_Int32) + ((nParams+2) * sizeof(sal_Int64)) ); char * pCppStackStart = pCppStack; // need to know parameter types for callVirtualMethod so generate a signature string char * pParamType = (char *) alloca(nParams+2); char * pPT = pParamType; // 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 (bridges::cpp_uno::shared::isSimpleType( pReturnTypeDescr )) { pCppReturn = pUnoReturn; // direct way for simple types } else { // complex return via ptr pCppReturn = *(void **)pCppStack = (bridges::cpp_uno::shared::relatesToInterfaceType( pReturnTypeDescr ) ? alloca( pReturnTypeDescr->nSize ) : pUnoReturn); // direct way *pPT++ = 'C'; //signify that a complex return type on stack pCppStack += sizeof(void *); } } // push this void * pAdjustedThisPtr = reinterpret_cast< void ** >(pThis->getCppI()) + aVtableSlot.offset; *(void**)pCppStack = pAdjustedThisPtr; pCppStack += sizeof( void* ); *pPT++ = 'I'; // 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 && bridges::cpp_uno::shared::isSimpleType( pParamTypeDescr )) { uno_copyAndConvertData( pCppArgs[nPos] = pCppStack, pUnoArgs[nPos], pParamTypeDescr, pThis->getBridge()->getUno2Cpp() ); switch (pParamTypeDescr->eTypeClass) { // we need to know type of each param so that we know whether to use // gpr or fpr to pass in parameters: // Key: I - int, long, pointer, etc means pass in gpr // B - byte value passed in gpr // S - short value passed in gpr // F - float value pass in fpr // D - double value pass in fpr // H - long long int pass in proper pairs of gpr (3,4) (5,6), etc // X - indicates end of parameter description string case typelib_TypeClass_LONG: case typelib_TypeClass_UNSIGNED_LONG: case typelib_TypeClass_ENUM: *pPT++ = 'I'; break; case typelib_TypeClass_SHORT: case typelib_TypeClass_CHAR: case typelib_TypeClass_UNSIGNED_SHORT: *pPT++ = 'S'; break; case typelib_TypeClass_BOOLEAN: case typelib_TypeClass_BYTE: *pPT++ = 'B'; break; case typelib_TypeClass_FLOAT: *pPT++ = 'F'; break; case typelib_TypeClass_DOUBLE: *pPT++ = 'D'; pCppStack += sizeof(sal_Int32); // extra long break; case typelib_TypeClass_HYPER: case typelib_TypeClass_UNSIGNED_HYPER: *pPT++ = 'H'; pCppStack += sizeof(sal_Int32); // extra long default: break; } // 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 (bridges::cpp_uno::shared::relatesToInterfaceType( pParamTypeDescr )) { uno_copyAndConvertData( *(void **)pCppStack = pCppArgs[nPos] = alloca( pParamTypeDescr->nSize ), pUnoArgs[nPos], pParamTypeDescr, pThis->getBridge()->getUno2Cpp() ); 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 ); } *pPT++='I'; } pCppStack += sizeof(sal_Int32); // standard parameter length } // terminate the signature string *pPT++='X'; *pPT=0; try { OSL_ENSURE( !( (pCppStack - pCppStackStart ) & 3), "UNALIGNED STACK !!! (Please DO panic)" ); callVirtualMethod( pAdjustedThisPtr, aVtableSlot.index, pCppReturn, pReturnTypeDescr->eTypeClass, pParamType, (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->getBridge()->getCpp2Uno() ); } } else // pure out { uno_copyAndConvertData( pUnoArgs[nIndex], pCppArgs[nIndex], pParamTypeDescr, pThis->getBridge()->getCpp2Uno() ); } // 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->getBridge()->getCpp2Uno() ); uno_destructData( pCppReturn, pReturnTypeDescr, cpp_release ); } } catch (...) { // fill uno exception fillUnoException( CPPU_CURRENT_NAMESPACE::__cxa_get_globals()->caughtExceptions, *ppUnoExc, pThis->getBridge()->getCpp2Uno() ); // 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 ); } } } namespace bridges { namespace cpp_uno { namespace shared { void unoInterfaceProxyDispatch( uno_Interface * pUnoI, const typelib_TypeDescription * pMemberDescr, void * pReturn, void * pArgs[], uno_Any ** ppException ) { // is my surrogate bridges::cpp_uno::shared::UnoInterfaceProxy * pThis = static_cast< bridges::cpp_uno::shared::UnoInterfaceProxy * > (pUnoI); // typelib_InterfaceTypeDescription * pTypeDescr = pThis->pTypeDescr; switch (pMemberDescr->eTypeClass) { case typelib_TypeClass_INTERFACE_ATTRIBUTE: { VtableSlot aVtableSlot( getVtableSlot( reinterpret_cast< typelib_InterfaceAttributeTypeDescription const * >( pMemberDescr))); if (pReturn) { // dependent dispatch cpp_call( pThis, aVtableSlot, ((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 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: { VtableSlot aVtableSlot( getVtableSlot( reinterpret_cast< typelib_InterfaceMethodTypeDescription const * >( pMemberDescr))); switch (aVtableSlot.index) { // 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->getUnoEnv()->getRegisteredInterface)( pThis->pBridge->getUnoEnv(), (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, aVtableSlot, ((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 ); } } } } } }