528 lines
19 KiB
C++
528 lines
19 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include <malloc.h>
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#include <typeinfo>
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#include <rtl/alloc.h>
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#include <sal/log.hxx>
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#include <com/sun/star/uno/genfunc.hxx>
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#include "com/sun/star/uno/RuntimeException.hpp"
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#include <uno/data.h>
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#include <typelib/typedescription.hxx>
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#include "bridge.hxx"
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#include "cppinterfaceproxy.hxx"
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#include "types.hxx"
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#include "vtablefactory.hxx"
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#include "share.hxx"
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#include <dlfcn.h>
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using namespace ::osl;
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using namespace ::com::sun::star::uno;
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namespace
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{
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static typelib_TypeClass cpp2uno_call(
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bridges::cpp_uno::shared::CppInterfaceProxy* pThis,
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const typelib_TypeDescription * pMemberTypeDescr,
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typelib_TypeDescriptionReference * pReturnTypeRef,
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sal_Int32 nParams, typelib_MethodParameter * pParams,
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long r8, void ** pCallStack,
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sal_Int64 * pRegisterReturn /* space for register return */ )
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{
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// pCallStack: ret, [return ptr], this, params
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char * pTopStack = (char *)(pCallStack + 0);
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char * pCppStack = pTopStack;
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#if OSL_DEBUG_LEVEL > 2
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fprintf(stderr, "cpp2uno_call\n");
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#endif
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// return
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typelib_TypeDescription * pReturnTypeDescr = 0;
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if (pReturnTypeRef)
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TYPELIB_DANGER_GET( &pReturnTypeDescr, pReturnTypeRef );
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void * pUnoReturn = 0;
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// complex return ptr: if != 0 && != pUnoReturn, reconversion need
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void * pCppReturn = 0;
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if (pReturnTypeDescr)
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{
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if (bridges::cpp_uno::shared::isSimpleType( pReturnTypeDescr ))
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{
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#if OSL_DEBUG_LEVEL > 2
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fprintf(stderr, "simple return\n");
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#endif
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pUnoReturn = pRegisterReturn; // direct way for simple types
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}
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else // complex return via ptr (pCppReturn)
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{
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#if OSL_DEBUG_LEVEL > 2
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fprintf(stderr, "complex return\n");
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#endif
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pCppReturn = (void *)r8;
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pUnoReturn = (bridges::cpp_uno::shared::relatesToInterfaceType( pReturnTypeDescr )
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? alloca( pReturnTypeDescr->nSize )
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: pCppReturn); // direct way
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}
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}
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// pop this
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pCppStack += sizeof( void* );
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// stack space
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static_assert( sizeof(void *) == sizeof(sal_Int32),
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"### unexpected size!" );
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// parameters
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void ** pUnoArgs = (void **)alloca( 4 * sizeof(void *) * nParams );
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void ** pCppArgs = pUnoArgs + nParams;
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// indices of values this have to be converted (interface conversion
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// cpp<=>uno)
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sal_Int32 * pTempIndices = (sal_Int32 *)(pUnoArgs + (2 * nParams));
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// type descriptions for reconversions
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typelib_TypeDescription ** ppTempParamTypeDescr =
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(typelib_TypeDescription **)(pUnoArgs + (3 * nParams));
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sal_Int32 nTempIndices = 0;
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for ( sal_Int32 nPos = 0; nPos < nParams; ++nPos )
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{
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const typelib_MethodParameter & rParam = pParams[nPos];
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typelib_TypeDescription * pParamTypeDescr = 0;
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TYPELIB_DANGER_GET( &pParamTypeDescr, rParam.pTypeRef );
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if (!rParam.bOut &&
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bridges::cpp_uno::shared::isSimpleType( pParamTypeDescr ))
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{
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switch (pParamTypeDescr->eTypeClass)
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{
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case typelib_TypeClass_BYTE:
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case typelib_TypeClass_BOOLEAN:
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pCppArgs[nPos] = pCppStack + 3;
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pUnoArgs[nPos] = pCppStack + 3;
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break;
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case typelib_TypeClass_CHAR:
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case typelib_TypeClass_SHORT:
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case typelib_TypeClass_UNSIGNED_SHORT:
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pCppArgs[nPos] = pCppStack + 2;
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pUnoArgs[nPos] = pCppStack + 2;
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break;
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case typelib_TypeClass_HYPER:
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case typelib_TypeClass_UNSIGNED_HYPER:
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case typelib_TypeClass_DOUBLE:
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pCppArgs[nPos] = pCppStack;
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pUnoArgs[nPos] = pCppStack;
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pCppStack += sizeof(sal_Int32); // extra long
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break;
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default:
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pCppArgs[nPos] = pCppStack;
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pUnoArgs[nPos] = pCppStack;
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break;
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}
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// no longer needed
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TYPELIB_DANGER_RELEASE( pParamTypeDescr );
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}
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else // ptr to complex value | ref
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{
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pCppArgs[nPos] = *(void **)pCppStack;
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if (! rParam.bIn) // is pure out
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{
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// uno out is unconstructed mem!
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pUnoArgs[nPos] = alloca( pParamTypeDescr->nSize );
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pTempIndices[nTempIndices] = nPos;
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// will be released at reconversion
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ppTempParamTypeDescr[nTempIndices++] = pParamTypeDescr;
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}
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// is in/inout
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else if (bridges::cpp_uno::shared::relatesToInterfaceType(
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pParamTypeDescr ))
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{
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uno_copyAndConvertData( pUnoArgs[nPos] = alloca( pParamTypeDescr->nSize ),
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*(void **)pCppStack, pParamTypeDescr,
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pThis->getBridge()->getCpp2Uno() );
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pTempIndices[nTempIndices] = nPos; // has to be reconverted
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// will be released at reconversion
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ppTempParamTypeDescr[nTempIndices++] = pParamTypeDescr;
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}
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else // direct way
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{
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pUnoArgs[nPos] = *(void **)pCppStack;
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// no longer needed
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TYPELIB_DANGER_RELEASE( pParamTypeDescr );
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}
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}
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pCppStack += sizeof(sal_Int32); // standard parameter length
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}
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// ExceptionHolder
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uno_Any aUnoExc; // Any will be constructed by callee
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uno_Any * pUnoExc = &aUnoExc;
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#if OSL_DEBUG_LEVEL > 2
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fprintf(stderr, "before dispatch\n");
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#endif
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// invoke uno dispatch call
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(*pThis->getUnoI()->pDispatcher)(
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pThis->getUnoI(), pMemberTypeDescr, pUnoReturn, pUnoArgs, &pUnoExc );
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#if OSL_DEBUG_LEVEL > 2
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fprintf(stderr, "after dispatch\n");
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#endif
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// in case an exception occurred...
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if (pUnoExc)
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{
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// destruct temporary in/inout params
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for ( ; nTempIndices--; )
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{
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sal_Int32 nIndex = pTempIndices[nTempIndices];
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if (pParams[nIndex].bIn) // is in/inout => was constructed
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uno_destructData( pUnoArgs[nIndex],
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ppTempParamTypeDescr[nTempIndices], 0 );
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TYPELIB_DANGER_RELEASE( ppTempParamTypeDescr[nTempIndices] );
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}
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if (pReturnTypeDescr)
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TYPELIB_DANGER_RELEASE( pReturnTypeDescr );
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CPPU_CURRENT_NAMESPACE::raiseException( &aUnoExc,
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pThis->getBridge()->getUno2Cpp() ); // has to destruct the any
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// is here for dummy
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return typelib_TypeClass_VOID;
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}
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else // else no exception occurred...
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{
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// temporary params
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for ( ; nTempIndices--; )
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{
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sal_Int32 nIndex = pTempIndices[nTempIndices];
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typelib_TypeDescription * pParamTypeDescr =
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ppTempParamTypeDescr[nTempIndices];
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if (pParams[nIndex].bOut) // inout/out
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{
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// convert and assign
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uno_destructData( pCppArgs[nIndex], pParamTypeDescr,
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cpp_release );
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uno_copyAndConvertData( pCppArgs[nIndex], pUnoArgs[nIndex],
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pParamTypeDescr, pThis->getBridge()->getUno2Cpp() );
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}
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// destroy temp uno param
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uno_destructData( pUnoArgs[nIndex], pParamTypeDescr, 0 );
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TYPELIB_DANGER_RELEASE( pParamTypeDescr );
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}
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// return
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if (pCppReturn) // has complex return
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{
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if (pUnoReturn != pCppReturn) // needs reconversion
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{
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uno_copyAndConvertData( pCppReturn, pUnoReturn,
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pReturnTypeDescr, pThis->getBridge()->getUno2Cpp() );
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// destroy temp uno return
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uno_destructData( pUnoReturn, pReturnTypeDescr, 0 );
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}
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// complex return ptr is set to return reg
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*(void **)pRegisterReturn = pCppReturn;
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}
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if (pReturnTypeDescr)
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{
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typelib_TypeClass eRet =
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(typelib_TypeClass)pReturnTypeDescr->eTypeClass;
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TYPELIB_DANGER_RELEASE( pReturnTypeDescr );
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return eRet;
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}
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else
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return typelib_TypeClass_VOID;
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}
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}
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static typelib_TypeClass cpp_mediate(
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sal_Int32 nFunctionIndex, sal_Int32 nVtableOffset,
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long sp, long r8,
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sal_Int64 * pRegisterReturn /* space for register return */ )
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{
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void ** pCallStack = (void**)(sp);
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#if OSL_DEBUG_LEVEL > 2
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fprintf(stderr, "cpp_mediate with\n");
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fprintf(stderr, "%x %x\n", nFunctionIndex, nVtableOffset);
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fprintf(stderr, "and %x %x\n", pCallStack, pRegisterReturn);
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fprintf(stderr, "and %x %x\n", pCallStack[0], pCallStack[1]);
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#endif
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static_assert( sizeof(sal_Int32)==sizeof(void *), "### unexpected!" );
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void *pThis = pCallStack[0];
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pThis = static_cast< char * >(pThis) - nVtableOffset;
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bridges::cpp_uno::shared::CppInterfaceProxy * pCppI =
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bridges::cpp_uno::shared::CppInterfaceProxy::castInterfaceToProxy(
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pThis);
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typelib_InterfaceTypeDescription * pTypeDescr = pCppI->getTypeDescr();
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if (nFunctionIndex >= pTypeDescr->nMapFunctionIndexToMemberIndex)
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{
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SAL_WARN(
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"bridges",
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"illegal " << OUString::unacquired(&pTypeDescr->aBase.pTypeName)
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<< " vtable index " << nFunctionIndex << "/"
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<< pTypeDescr->nMapFunctionIndexToMemberIndex);
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throw RuntimeException(
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("illegal " + OUString::unacquired(&pTypeDescr->aBase.pTypeName)
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+ " vtable index " + OUString::number(nFunctionIndex) + "/"
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+ OUString::number(pTypeDescr->nMapFunctionIndexToMemberIndex)),
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(XInterface *)pCppI);
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}
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// determine called method
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assert(nFunctionIndex < pTypeDescr->nMapFunctionIndexToMemberIndex);
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sal_Int32 nMemberPos =
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pTypeDescr->pMapFunctionIndexToMemberIndex[nFunctionIndex];
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assert(nMemberPos < pTypeDescr->nAllMembers);
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TypeDescription aMemberDescr( pTypeDescr->ppAllMembers[nMemberPos] );
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typelib_TypeClass eRet;
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switch (aMemberDescr.get()->eTypeClass)
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{
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case typelib_TypeClass_INTERFACE_ATTRIBUTE:
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{
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if (pTypeDescr->pMapMemberIndexToFunctionIndex[nMemberPos] ==
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nFunctionIndex)
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{
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// is GET method
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eRet = cpp2uno_call(
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pCppI, aMemberDescr.get(),
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((typelib_InterfaceAttributeTypeDescription *)aMemberDescr.get())->pAttributeTypeRef,
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0, 0, // no params
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r8, pCallStack, pRegisterReturn );
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}
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else
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{
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// is SET method
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typelib_MethodParameter aParam;
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aParam.pTypeRef =
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((typelib_InterfaceAttributeTypeDescription *)aMemberDescr.get())->pAttributeTypeRef;
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aParam.bIn = sal_True;
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aParam.bOut = sal_False;
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eRet = cpp2uno_call(
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pCppI, aMemberDescr.get(),
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0, // indicates void return
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1, &aParam,
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r8, pCallStack, pRegisterReturn );
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}
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break;
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}
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case typelib_TypeClass_INTERFACE_METHOD:
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{
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// is METHOD
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switch (nFunctionIndex)
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{
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case 1: // acquire()
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pCppI->acquireProxy(); // non virtual call!
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eRet = typelib_TypeClass_VOID;
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break;
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case 2: // release()
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pCppI->releaseProxy(); // non virtual call!
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eRet = typelib_TypeClass_VOID;
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break;
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case 0: // queryInterface() opt
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{
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typelib_TypeDescription * pTD = 0;
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TYPELIB_DANGER_GET(&pTD,
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reinterpret_cast<Type *>(pCallStack[1])->getTypeLibType());
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if (pTD)
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{
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XInterface * pInterface = 0;
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(*pCppI->getBridge()->getCppEnv()->getRegisteredInterface)(
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pCppI->getBridge()->getCppEnv(),
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(void **)&pInterface, pCppI->getOid().pData,
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(typelib_InterfaceTypeDescription *)pTD );
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if (pInterface)
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{
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::uno_any_construct(
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reinterpret_cast< uno_Any * >( r8 ),
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&pInterface, pTD, cpp_acquire );
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pInterface->release();
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TYPELIB_DANGER_RELEASE( pTD );
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*(void **)pRegisterReturn = (void*)r8;
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eRet = typelib_TypeClass_ANY;
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break;
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}
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TYPELIB_DANGER_RELEASE( pTD );
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}
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} // else perform queryInterface()
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default:
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eRet = cpp2uno_call(
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pCppI, aMemberDescr.get(),
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((typelib_InterfaceMethodTypeDescription *)aMemberDescr.get())->pReturnTypeRef,
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((typelib_InterfaceMethodTypeDescription *)aMemberDescr.get())->nParams,
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((typelib_InterfaceMethodTypeDescription *)aMemberDescr.get())->pParams,
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r8, pCallStack, pRegisterReturn );
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}
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break;
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}
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default:
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{
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throw RuntimeException( "no member description found!", (XInterface *)pCppI );
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}
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}
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return eRet;
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}
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}
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/**
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* is called on incoming vtable calls
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* (called by asm snippets)
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*/
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extern "C" sal_Int64 cpp_vtable_call( long firstonstack )
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{
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register long d0 asm("d0");
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long functionIndex = d0;
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register long a1 asm("a1");
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long r8 = a1;
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register long d1 asm("d1");
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long vtableOffset = d1;
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long sp = (long)&firstonstack;
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sal_Int64 nRegReturn;
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cpp_mediate( functionIndex, vtableOffset, sp, r8, &nRegReturn );
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return nRegReturn;
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}
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namespace
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{
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const int codeSnippetSize = 20;
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//some m68k info: http://www2.biglobe.ne.jp/~inaba/trampolines.html
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unsigned char *codeSnippet(unsigned char* code, sal_Int32 functionIndex,
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sal_Int32 vtableOffset)
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{
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unsigned char * p = code;
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*(short *)&p[0] = 0x203C; //movel functionIndex,d0
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*(long *)&p[2] = functionIndex;
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*(short *)&p[6] = 0x223C; //movel functionIndex,d1
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*(long *)&p[8] = vtableOffset;
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*(short *)&p[12] = 0x4EF9; //jmp cpp_vtable_call
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*(long *)&p[14] = (long)&cpp_vtable_call;
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*(short *)&p[18] = 0x4E71; //nop
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return code + codeSnippetSize;
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}
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}
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struct bridges::cpp_uno::shared::VtableFactory::Slot { void const * fn; };
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bridges::cpp_uno::shared::VtableFactory::Slot *
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bridges::cpp_uno::shared::VtableFactory::mapBlockToVtable(void * block)
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{
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return static_cast< Slot * >(block) + 2;
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}
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std::size_t bridges::cpp_uno::shared::VtableFactory::getBlockSize(
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sal_Int32 slotCount)
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{
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return (slotCount + 2) * sizeof (Slot) + slotCount * codeSnippetSize;
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}
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namespace {
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// Some dummy type whose RTTI is used in the synthesized proxy vtables to make uses of dynamic_cast
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// on such proxy objects not crash:
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struct ProxyRtti {};
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}
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bridges::cpp_uno::shared::VtableFactory::Slot *
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bridges::cpp_uno::shared::VtableFactory::initializeBlock(
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void * block, sal_Int32 slotCount, sal_Int32,
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typelib_InterfaceTypeDescription *)
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{
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Slot * slots = mapBlockToVtable(block);
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slots[-2].fn = 0;
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slots[-1].fn = &typeid(ProxyRtti);
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return slots + slotCount;
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}
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unsigned char * bridges::cpp_uno::shared::VtableFactory::addLocalFunctions(
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Slot ** slots, unsigned char * code, sal_PtrDiff writetoexecdiff,
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typelib_InterfaceTypeDescription const * type, sal_Int32 functionOffset,
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sal_Int32 functionCount, sal_Int32 vtableOffset)
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{
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(*slots) -= functionCount;
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Slot * s = *slots;
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for (sal_Int32 i = 0; i < type->nMembers; ++i)
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{
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typelib_TypeDescription * member = 0;
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TYPELIB_DANGER_GET(&member, type->ppMembers[i]);
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assert(member != 0);
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switch (member->eTypeClass)
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{
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|
case typelib_TypeClass_INTERFACE_ATTRIBUTE:
|
|
// Getter:
|
|
(s++)->fn = code + writetoexecdiff;
|
|
code = codeSnippet(code, functionOffset++, vtableOffset);
|
|
// Setter:
|
|
if (!reinterpret_cast<
|
|
typelib_InterfaceAttributeTypeDescription * >(
|
|
member)->bReadOnly)
|
|
{
|
|
(s++)->fn = code + writetoexecdiff;
|
|
code = codeSnippet(code, functionOffset++, vtableOffset);
|
|
}
|
|
break;
|
|
case typelib_TypeClass_INTERFACE_METHOD:
|
|
{
|
|
(s++)->fn = code + writetoexecdiff;
|
|
|
|
typelib_InterfaceMethodTypeDescription *pMethodTD =
|
|
reinterpret_cast<
|
|
typelib_InterfaceMethodTypeDescription * >(member);
|
|
|
|
code = codeSnippet(code, functionOffset++, vtableOffset);
|
|
break;
|
|
}
|
|
default:
|
|
assert(false);
|
|
break;
|
|
}
|
|
TYPELIB_DANGER_RELEASE(member);
|
|
}
|
|
return code;
|
|
}
|
|
|
|
void bridges::cpp_uno::shared::VtableFactory::flushCode(
|
|
unsigned char const * /*beg*/, unsigned char const * /*end*/)
|
|
{
|
|
}
|
|
|
|
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|