/* -*- 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 #include #include #include #include "bridge.hxx" #include "cppinterfaceproxy.hxx" #include "types.hxx" #include "vtablefactory.hxx" #include "share.hxx" extern "C" int codeSnippets[]; const int nFunIndexes = 8; const int nVtableOffsets = 4; using namespace ::com::sun::star::uno; namespace { static typelib_TypeClass cpp2uno_call( bridges::cpp_uno::shared::CppInterfaceProxy* pThis, const typelib_TypeDescription * pMemberTypeDescr, typelib_TypeDescriptionReference * pReturnTypeRef, sal_Int32 nParams, typelib_MethodParameter * pParams, void ** pCallStack, sal_Int64 * pRegisterReturn /* space for register return */ ) { // pCallStack: x8, lr, d0..d7, x0..x7, rest of params originally on stack char *pTopStack = (char *)pCallStack; char *pFloatRegs = pTopStack + 2; char *pGPRegs = pTopStack + (2+8)*8; char *pStackedArgs = pTopStack + (2+8+8)*8; int nGPR = 0; int nFPR = 0; // return typelib_TypeDescription * pReturnTypeDescr = 0; if (pReturnTypeRef) TYPELIB_DANGER_GET( &pReturnTypeDescr, pReturnTypeRef ); void * pUnoReturn = 0; // complex return ptr: if != 0 && != pUnoReturn, reconversion need void * pCppReturn = 0; if (pReturnTypeDescr) { if (!arm::return_in_x8(pReturnTypeRef)) pUnoReturn = pRegisterReturn; // direct way for simple types else // complex return via x8 { pCppReturn = pCallStack[0]; pUnoReturn = (bridges::cpp_uno::shared::relatesToInterfaceType( pReturnTypeDescr ) ? alloca( pReturnTypeDescr->nSize ) : pCppReturn); // direct way } } // Skip 'this' pGPRegs += 8; nGPR++; // Parameters void ** pUnoArgs = (void **)alloca( sizeof(void *) * nParams ); void ** pCppArgs = (void **)alloca( sizeof(void *) * nParams ); // Indices of values this have to be converted (interface conversion // cpp<=>uno) int * pTempIndices = (sal_Int32 *)alloca( sizeof(int) * nParams); // Type descriptions for reconversions typelib_TypeDescription ** ppTempParamTypeDescr = (typelib_TypeDescription **)alloca( sizeof(typelib_TypeDescription *) * nParams); int nTempIndices = 0; for ( int 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 )) { if (nFPR < 8 && (pParamTypeDescr->eTypeClass == typelib_TypeClass_FLOAT || pParamTypeDescr->eTypeClass == typelib_TypeClass_DOUBLE)) { pCppArgs[nPos] = pUnoArgs[nPos] = pFloatRegs; pFloatRegs += 8; nFPR++; } else if (pParamTypeDescr->eTypeClass == typelib_TypeClass_FLOAT) { if ((pStackedArgs - pTopStack) % 4) pStackedArgs += 4 - ((pStackedArgs - pTopStack) % 4); pCppArgs[nPos] = pUnoArgs[nPos] = pStackedArgs; pStackedArgs += 4; } else if (pParamTypeDescr->eTypeClass == typelib_TypeClass_DOUBLE) { if ((pStackedArgs - pTopStack) % 8) pStackedArgs += 8 - ((pStackedArgs - pTopStack) % 8); pCppArgs[nPos] = pUnoArgs[nPos] = pStackedArgs; pStackedArgs += 8; } else if (nGPR < 8) { pCppArgs[nPos] = pUnoArgs[nPos] = pGPRegs; pGPRegs += 8; nGPR++; } else switch (pParamTypeDescr->eTypeClass) { case typelib_TypeClass_HYPER: case typelib_TypeClass_UNSIGNED_HYPER: if ((pStackedArgs - pTopStack) % 8) pStackedArgs += 8 - ((pStackedArgs - pTopStack) % 8); pCppArgs[nPos] = pUnoArgs[nPos] = pStackedArgs; pStackedArgs += 8; break; case typelib_TypeClass_ENUM: case typelib_TypeClass_LONG: case typelib_TypeClass_UNSIGNED_LONG: if ((pStackedArgs - pTopStack) % 4) pStackedArgs += 4 - ((pStackedArgs - pTopStack) % 4); pCppArgs[nPos] = pUnoArgs[nPos] = pStackedArgs; pStackedArgs += 4; break; case typelib_TypeClass_CHAR: case typelib_TypeClass_SHORT: case typelib_TypeClass_UNSIGNED_SHORT: if ((pStackedArgs - pTopStack) % 2) pStackedArgs += 1; pCppArgs[nPos] = pUnoArgs[nPos] = pStackedArgs; pStackedArgs += 2; break; case typelib_TypeClass_BOOLEAN: case typelib_TypeClass_BYTE: pCppArgs[nPos] = pUnoArgs[nPos] = pStackedArgs; pStackedArgs += 1; break; default: assert(!"should not happen"); break; } // no longer needed TYPELIB_DANGER_RELEASE( pParamTypeDescr ); } else // ptr to complex value | ref { if (nGPR < 8) { pCppArgs[nPos] = *(void **)pGPRegs; pGPRegs += 8; } else { if ((pStackedArgs - pTopStack) % 8) pStackedArgs += 8 - ((pStackedArgs - pTopStack) % 8); pCppArgs[nPos] = pStackedArgs; pStackedArgs += 8; } if (! rParam.bIn) // is pure out { // uno out is unconstructed mem! pUnoArgs[nPos] = alloca( pParamTypeDescr->nSize ); pTempIndices[nTempIndices] = nPos; // will be released at reconversion ppTempParamTypeDescr[nTempIndices++] = pParamTypeDescr; } // is in/inout else if (bridges::cpp_uno::shared::relatesToInterfaceType( pParamTypeDescr )) { uno_copyAndConvertData( pUnoArgs[nPos] = alloca( pParamTypeDescr->nSize ), pCppArgs[nPos], pParamTypeDescr, pThis->getBridge()->getCpp2Uno() ); pTempIndices[nTempIndices] = nPos; // has to be reconverted // will be released at reconversion ppTempParamTypeDescr[nTempIndices++] = pParamTypeDescr; } else // direct way { pUnoArgs[nPos] = pCppArgs[nPos]; // no longer needed TYPELIB_DANGER_RELEASE( pParamTypeDescr ); } } } // 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 occurred... if (pUnoExc) { // destruct temporary in/inout params for ( ; nTempIndices--; ) { int nIndex = pTempIndices[nTempIndices]; if (pParams[nIndex].bIn) // is in/inout => was constructed uno_destructData( pUnoArgs[nIndex], ppTempParamTypeDescr[nTempIndices], 0 ); TYPELIB_DANGER_RELEASE( ppTempParamTypeDescr[nTempIndices] ); } if (pReturnTypeDescr) TYPELIB_DANGER_RELEASE( pReturnTypeDescr ); CPPU_CURRENT_NAMESPACE::raiseException( &aUnoExc, pThis->getBridge()->getUno2Cpp() ); // has to destruct the any // is here for dummy return typelib_TypeClass_VOID; } else // else no exception occurred... { // temporary params for ( ; nTempIndices--; ) { int nIndex = pTempIndices[nTempIndices]; typelib_TypeDescription * pParamTypeDescr = ppTempParamTypeDescr[nTempIndices]; 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 ); } *(void **)pRegisterReturn = pCppReturn; } if (pReturnTypeDescr) { typelib_TypeClass eRet = (typelib_TypeClass)pReturnTypeDescr->eTypeClass; TYPELIB_DANGER_RELEASE( pReturnTypeDescr ); return eRet; } else return typelib_TypeClass_VOID; } } static void cpp_mediate(sal_Int32 nFunctionIndex, sal_Int32 nVtableOffset, void ** pCallStack) { sal_Int64 nRegReturn; sal_Int64 *pRegisterReturn = &nRegReturn; // pCallStack: x8, lr, d0..d7, x0..x7, rest of params originally on stack // _this_ ptr is patched cppu_XInterfaceProxy object void *pThis = pCallStack[2 + 8]; pThis = static_cast< char * >(pThis) - nVtableOffset; bridges::cpp_uno::shared::CppInterfaceProxy * pCppI = bridges::cpp_uno::shared::CppInterfaceProxy::castInterfaceToProxy( pThis); typelib_InterfaceTypeDescription * pTypeDescr = pCppI->getTypeDescr(); // determine called method assert( nFunctionIndex < pTypeDescr->nMapFunctionIndexToMemberIndex ); if (nFunctionIndex >= pTypeDescr->nMapFunctionIndexToMemberIndex) { throw RuntimeException( "illegal vtable index!", (XInterface *)pCppI ); } sal_Int32 nMemberPos = pTypeDescr->pMapFunctionIndexToMemberIndex[nFunctionIndex]; assert( nMemberPos < pTypeDescr->nAllMembers ); 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) { 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(pCallStack[2])->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[0] ), &pInterface, pTD, cpp_acquire ); pInterface->release(); TYPELIB_DANGER_RELEASE( pTD ); *(void **)pRegisterReturn = pCallStack[0]; eRet = typelib_TypeClass_ANY; break; } TYPELIB_DANGER_RELEASE( pTD ); } } // else perform queryInterface() [[fallthrough]]; 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( "no member description found!", (XInterface *)pCppI ); } } (void)eRet; return; } } /** * is called on incoming vtable calls * (called by asm snippets) */ extern "C" void cpp_vtable_call( sal_Int32 func, sal_Int32 offset, void **pStack ) { cpp_mediate(func, offset, pStack); } namespace { unsigned char *codeSnippet(const typelib_InterfaceTypeDescription *type, const typelib_TypeDescription *member, sal_Int32 functionIndex, sal_Int32 vtableOffset) { // For now temporarily assert when we get here. The intent is // that we won't need the code snippets at all on iOS. assert(false); assert(functionIndex < nFunIndexes); if (!(functionIndex < nFunIndexes)) return NULL; assert(vtableOffset < nVtableOffsets); if (!(vtableOffset < nVtableOffsets)) return NULL; // The codeSnippets table is indexed by functionIndex and vtableOffset int index = functionIndex*nVtableOffsets + vtableOffset; unsigned char *result = ((unsigned char *) &codeSnippets) + codeSnippets[index]; SAL_INFO( "bridges.ios", "codeSnippet(" << OUString(type->aBase.pTypeName) << "::" << OUString(member->pTypeName) << "): [" << functionIndex << "," << vtableOffset << "]=" << (void *) result << " (" << std::hex << ((int*)result)[0] << "," << ((int*)result)[1] << "," << ((int*)result)[2] << "," << ((int*)result)[3] << ")"); return result; } } 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) + 2; } std::size_t bridges::cpp_uno::shared::VtableFactory::getBlockSize( sal_Int32 slotCount) { return (slotCount + 2) * sizeof (Slot); } bridges::cpp_uno::shared::VtableFactory::Slot * bridges::cpp_uno::shared::VtableFactory::initializeBlock( void * block, sal_Int32 slotCount, sal_Int32, typelib_InterfaceTypeDescription *) { Slot * slots = mapBlockToVtable(block); slots[-2].fn = 0; slots[-1].fn = 0; return slots + slotCount; } unsigned char * bridges::cpp_uno::shared::VtableFactory::addLocalFunctions( Slot ** slots, unsigned char * code, typelib_InterfaceTypeDescription const * type, sal_Int32 functionOffset, sal_Int32 functionCount, sal_Int32 vtableOffset) { (*slots) -= functionCount; Slot * s = *slots; for (sal_Int32 i = 0; i < type->nMembers; ++i) { typelib_TypeDescription * member = 0; TYPELIB_DANGER_GET(&member, type->ppMembers[i]); assert(member != 0); switch (member->eTypeClass) { case typelib_TypeClass_INTERFACE_ATTRIBUTE: { typelib_InterfaceAttributeTypeDescription *pAttrTD = reinterpret_cast( member ); // Getter: (s++)->fn = codeSnippet( type, member, functionOffset++, vtableOffset ); // Setter: if (!pAttrTD->bReadOnly) { (s++)->fn = codeSnippet( type, member, functionOffset++, vtableOffset ); } break; } case typelib_TypeClass_INTERFACE_METHOD: { (s++)->fn = codeSnippet( type, member, functionOffset++, vtableOffset ); break; } default: assert(false); break; } TYPELIB_DANGER_RELEASE(member); } return code; } void bridges::cpp_uno::shared::VtableFactory::flushCode( unsigned char const *, unsigned char const *) { // No dynamic code generation so nothing to flush } /* vim:set shiftwidth=4 softtabstop=4 expandtab: */