7b0d9c5115
2005/11/06 08:52:20 maho 1.3.12.1: use include <sal/alloca.h> instead of include <alloca.h> Issue number: #i53286#
519 lines
18 KiB
C++
519 lines
18 KiB
C++
/*************************************************************************
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*
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* OpenOffice.org - a multi-platform office productivity suite
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*
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* $RCSfile: cpp2uno.cxx,v $
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*
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* $Revision: 1.4 $
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*
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* last change: $Author: obo $ $Date: 2006-01-16 13:22:22 $
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*
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* The Contents of this file are made available subject to
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* the terms of GNU Lesser General Public License Version 2.1.
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*
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*
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* GNU Lesser General Public License Version 2.1
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* =============================================
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* Copyright 2005 by Sun Microsystems, Inc.
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* 901 San Antonio Road, Palo Alto, CA 94303, USA
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License version 2.1, as published by the Free Software Foundation.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*
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************************************************************************/
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#include <sal/alloca.h>
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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 "bridges/cpp_uno/shared/bridge.hxx"
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#include "bridges/cpp_uno/shared/cppinterfaceproxy.hxx"
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#include "bridges/cpp_uno/shared/types.hxx"
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#include "bridges/cpp_uno/shared/vtablefactory.hxx"
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#include "share.hxx"
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using namespace ::com::sun::star::uno;
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namespace
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{
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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, // 0 indicates void return
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sal_Int32 nParams, typelib_MethodParameter * pParams,
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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 * pCppStack = (char *)(pCallStack +1);
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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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void * pCppReturn = 0; // complex return ptr: if != 0 && != pUnoReturn, reconversion need
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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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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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pCppReturn = *(void **)pCppStack;
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pCppStack += sizeof(void *);
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pUnoReturn = (bridges::cpp_uno::shared::relatesToInterfaceType(
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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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OSL_ENSURE( sizeof(void *) == sizeof(sal_Int32), "### 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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// indizes of values this have to be converted (interface conversion cpp<=>uno)
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sal_Int32 * pTempIndizes = (sal_Int32 *)(pUnoArgs + (2 * nParams));
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// type descriptions for reconversions
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typelib_TypeDescription ** ppTempParamTypeDescr = (typelib_TypeDescription **)(pUnoArgs + (3 * nParams));
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sal_Int32 nTempIndizes = 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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// value
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{
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pCppArgs[nPos] = pCppStack;
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pUnoArgs[nPos] = pCppStack;
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switch (pParamTypeDescr->eTypeClass)
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{
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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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pCppStack += sizeof(sal_Int32); // extra long
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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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pTempIndizes[nTempIndizes] = nPos;
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// will be released at reconversion
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ppTempParamTypeDescr[nTempIndizes++] = 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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pTempIndizes[nTempIndizes] = nPos; // has to be reconverted
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// will be released at reconversion
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ppTempParamTypeDescr[nTempIndizes++] = 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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// 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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// in case an exception occured...
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if (pUnoExc)
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{
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// destruct temporary in/inout params
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for ( ; nTempIndizes--; )
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{
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sal_Int32 nIndex = pTempIndizes[nTempIndizes];
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if (pParams[nIndex].bIn) // is in/inout => was constructed
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uno_destructData( pUnoArgs[nIndex], ppTempParamTypeDescr[nTempIndizes], 0 );
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TYPELIB_DANGER_RELEASE( ppTempParamTypeDescr[nTempIndizes] );
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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(
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&aUnoExc, pThis->getBridge()->getUno2Cpp() );
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// 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 occured...
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{
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// temporary params
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for ( ; nTempIndizes--; )
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{
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sal_Int32 nIndex = pTempIndizes[nTempIndizes];
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typelib_TypeDescription * pParamTypeDescr = ppTempParamTypeDescr[nTempIndizes];
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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, cpp_release );
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uno_copyAndConvertData( pCppArgs[nIndex], pUnoArgs[nIndex], pParamTypeDescr,
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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, pReturnTypeDescr,
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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 eax
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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 = (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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//==================================================================================================
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static typelib_TypeClass cpp_mediate(
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sal_Int32 nFunctionIndex,
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sal_Int32 nVtableOffset,
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void ** pCallStack,
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sal_Int64 * pRegisterReturn /* space for register return */ )
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{
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OSL_ENSURE( sizeof(sal_Int32)==sizeof(void *), "### unexpected!" );
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// pCallStack: ret adr, [ret *], this, params
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void * pThis;
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if( nFunctionIndex & 0x80000000 )
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{
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nFunctionIndex &= 0x7fffffff;
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pThis = pCallStack[2];
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}
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else
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{
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pThis = pCallStack[1];
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}
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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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OSL_ENSURE( nFunctionIndex < pTypeDescr->nMapFunctionIndexToMemberIndex, "### illegal vtable index!" );
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if (nFunctionIndex >= pTypeDescr->nMapFunctionIndexToMemberIndex)
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{
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throw RuntimeException(
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rtl::OUString::createFromAscii("illegal vtable index!"),
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(XInterface *)pThis );
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}
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// determine called method
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sal_Int32 nMemberPos = pTypeDescr->pMapFunctionIndexToMemberIndex[nFunctionIndex];
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OSL_ENSURE( nMemberPos < pTypeDescr->nAllMembers, "### illegal member index!" );
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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] == 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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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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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, reinterpret_cast< Type * >( pCallStack[3] )->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 * >( pCallStack[1] ),
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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 = pCallStack[1];
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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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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(
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rtl::OUString::createFromAscii("no member description found!"),
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(XInterface *)pThis );
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// is here for dummy
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eRet = typelib_TypeClass_VOID;
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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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static void cpp_vtable_call(
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int nFunctionIndex, int nVtableOffset, void** pCallStack )
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__attribute__((regparm(3)));
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void cpp_vtable_call( int nFunctionIndex, int nVtableOffset, void** pCallStack )
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{
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volatile long nRegReturn[2];
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typelib_TypeClass aType = cpp_mediate(
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nFunctionIndex, nVtableOffset, pCallStack, (sal_Int64*)nRegReturn );
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switch( aType )
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{
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case typelib_TypeClass_HYPER:
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case typelib_TypeClass_UNSIGNED_HYPER:
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__asm__( "movl %1, %%edx\n\t"
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"movl %0, %%eax\n"
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: : "m"(nRegReturn[0]), "m"(nRegReturn[1]) );
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break;
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case typelib_TypeClass_FLOAT:
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__asm__( "flds %0\n\t"
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"fstp %%st(0)\n\t"
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"flds %0\n"
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: : "m"(*(float *)nRegReturn) );
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break;
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case typelib_TypeClass_DOUBLE:
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__asm__( "fldl %0\n\t"
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"fstp %%st(0)\n\t"
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"fldl %0\n"
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: : "m"(*(double *)nRegReturn) );
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break;
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// case typelib_TypeClass_UNSIGNED_SHORT:
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// case typelib_TypeClass_SHORT:
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// __asm__( "movswl %0, %%eax\n"
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// : : "m"(nRegReturn) );
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// break;
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default:
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__asm__( "movl %0, %%eax\n"
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: : "m"(nRegReturn[0]) );
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break;
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}
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}
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//==================================================================================================
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int const codeSnippetSize = 20;
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unsigned char * codeSnippet(
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unsigned char * code, sal_Int32 functionIndex, sal_Int32 vtableOffset,
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bool simpleRetType)
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{
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if (!simpleRetType) {
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functionIndex |= 0x80000000;
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}
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unsigned char * p = code;
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OSL_ASSERT(sizeof (sal_Int32) == 4);
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// mov function_index, %eax:
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*p++ = 0xB8;
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*reinterpret_cast< sal_Int32 * >(p) = functionIndex;
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p += sizeof (sal_Int32);
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// mov vtable_offset, %edx:
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*p++ = 0xBA;
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*reinterpret_cast< sal_Int32 * >(p) = vtableOffset;
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p += sizeof (sal_Int32);
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// mov %esp, %ecx:
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*p++ = 0x89;
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*p++ = 0xE1;
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// jmp cpp_vtable_call:
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*p++ = 0xE9;
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*reinterpret_cast< sal_Int32 * >(p)
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= ((unsigned char *) cpp_vtable_call) - p - sizeof (sal_Int32);
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p += sizeof (sal_Int32);
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OSL_ASSERT(p - code <= codeSnippetSize);
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return code + codeSnippetSize;
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}
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}
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void ** bridges::cpp_uno::shared::VtableFactory::mapBlockToVtable(char * block)
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{
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return reinterpret_cast< void ** >(block) + 2;
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}
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char * bridges::cpp_uno::shared::VtableFactory::createBlock(
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sal_Int32 slotCount, void *** slots)
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{
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char * block = new char[
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(slotCount + 2) * sizeof (void *) + slotCount * codeSnippetSize];
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*slots = mapBlockToVtable(block);
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(*slots)[-2] = 0;
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(*slots)[-1] = 0;
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return block;
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}
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unsigned char * bridges::cpp_uno::shared::VtableFactory::addLocalFunctions(
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void ** slots, unsigned char * code,
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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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for (sal_Int32 i = 0; i < type->nMembers; ++i) {
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typelib_TypeDescription * member = 0;
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TYPELIB_DANGER_GET(&member, type->ppMembers[i]);
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OSL_ASSERT(member != 0);
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switch (member->eTypeClass) {
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case typelib_TypeClass_INTERFACE_ATTRIBUTE:
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// Getter:
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*slots++ = code;
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code = codeSnippet(
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code, functionOffset++, vtableOffset,
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bridges::cpp_uno::shared::isSimpleType(
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reinterpret_cast<
|
|
typelib_InterfaceAttributeTypeDescription * >(
|
|
member)->pAttributeTypeRef));
|
|
// Setter:
|
|
if (!reinterpret_cast<
|
|
typelib_InterfaceAttributeTypeDescription * >(
|
|
member)->bReadOnly)
|
|
{
|
|
*slots++ = code;
|
|
code = codeSnippet(code, functionOffset++, vtableOffset, true);
|
|
}
|
|
break;
|
|
|
|
case typelib_TypeClass_INTERFACE_METHOD:
|
|
*slots++ = code;
|
|
code = codeSnippet(
|
|
code, functionOffset++, vtableOffset,
|
|
bridges::cpp_uno::shared::isSimpleType(
|
|
reinterpret_cast<
|
|
typelib_InterfaceMethodTypeDescription * >(
|
|
member)->pReturnTypeRef));
|
|
break;
|
|
|
|
default:
|
|
OSL_ASSERT(false);
|
|
break;
|
|
}
|
|
TYPELIB_DANGER_RELEASE(member);
|
|
}
|
|
return code;
|
|
}
|
|
|
|
void bridges::cpp_uno::shared::VtableFactory::flushCode(
|
|
unsigned char const *, unsigned char const *)
|
|
{}
|