593 lines
22 KiB
C++
593 lines
22 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 "call.hxx"
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#include <dlfcn.h>
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#ifdef ANDROID
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#include <unistd.h>
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#endif
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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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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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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 = reinterpret_cast<char *>(pCallStack + 0);
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char * pCppStack = pTopStack;
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#ifdef __ARM_PCS_VFP
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int dc = 0;
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char * pFloatArgs = reinterpret_cast<char *>(pCppStack - 64);
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#endif
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// return
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typelib_TypeDescription * pReturnTypeDescr = nullptr;
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if (pReturnTypeRef)
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TYPELIB_DANGER_GET( &pReturnTypeDescr, pReturnTypeRef );
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void * pUnoReturn = nullptr;
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// complex return ptr: if != 0 && != pUnoReturn, reconversion need
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void * pCppReturn = nullptr;
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if (pReturnTypeDescr)
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{
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if (!arm::return_in_hidden_param(pReturnTypeRef))
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pUnoReturn = pRegisterReturn; // direct way for simple types
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else // complex return via ptr (pCppReturn)
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{
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pCppReturn = *reinterpret_cast<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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static_assert(sizeof(void *) == sizeof(sal_Int32),
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"### unexpected size!");
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// parameters
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void ** pUnoArgs = static_cast<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 = reinterpret_cast<sal_Int32 *>(pUnoArgs + (2 * nParams));
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// type descriptions for reconversions
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typelib_TypeDescription ** ppTempParamTypeDescr =
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reinterpret_cast<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 = nullptr;
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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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#ifdef __ARM_EABI__
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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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#ifndef __ARM_PCS_VFP
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case typelib_TypeClass_DOUBLE:
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#endif
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if ((pCppStack - pTopStack) % 8) pCppStack+=sizeof(sal_Int32); //align to 8
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break;
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default:
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break;
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}
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#endif
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// For armhf we get the floating point arguments from a different area of the stack
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#ifdef __ARM_PCS_VFP
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if (pParamTypeDescr->eTypeClass == typelib_TypeClass_FLOAT)
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{
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pCppArgs[nPos] = pUnoArgs[nPos] = pFloatArgs;
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pFloatArgs += sizeof(float);
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} else
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if (pParamTypeDescr->eTypeClass == typelib_TypeClass_DOUBLE)
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{
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if ((pFloatArgs - pTopStack) % 8) pFloatArgs+=sizeof(float); //align to 8
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pCppArgs[nPos] = pUnoArgs[nPos] = pFloatArgs;
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pFloatArgs += sizeof(double);
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if (++dc == arm::MAX_FPR_REGS) {
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if (pCppStack - pTopStack < 16)
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pCppStack = pTopStack + 16;
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pFloatArgs = pCppStack;
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}
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} else
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#endif
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pCppArgs[nPos] = 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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#ifndef __ARM_PCS_VFP
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case typelib_TypeClass_DOUBLE:
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#endif
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pCppStack += sizeof(sal_Int32); // extra long
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break;
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default:
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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] = *reinterpret_cast<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] =
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alloca( pParamTypeDescr->nSize ),
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*reinterpret_cast<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] = *reinterpret_cast<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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#ifdef __ARM_PCS_VFP
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// use the stack for output parameters or non floating point values
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if (rParam.bOut ||
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((pParamTypeDescr->eTypeClass != typelib_TypeClass_DOUBLE)
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&& (pParamTypeDescr->eTypeClass != typelib_TypeClass_FLOAT))
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)
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#endif
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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 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], nullptr );
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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, nullptr );
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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, nullptr );
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}
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// complex return ptr is set to eax
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*reinterpret_cast<void **>(pRegisterReturn) = pCppReturn;
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}
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if (pReturnTypeDescr)
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{
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typelib_TypeClass eRet = 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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typelib_TypeClass cpp_mediate(
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sal_Int32 nFunctionIndex, 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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static_assert(sizeof(sal_Int32)==sizeof(void *), "### unexpected!");
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// pCallStack: [ret *], this, params
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// _this_ ptr is patched cppu_XInterfaceProxy object
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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[1];
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}
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else
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{
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pThis = pCallStack[0];
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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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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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reinterpret_cast<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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reinterpret_cast<typelib_InterfaceAttributeTypeDescription *>(aMemberDescr.get())->pAttributeTypeRef,
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0, nullptr, // 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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reinterpret_cast<typelib_InterfaceAttributeTypeDescription *>(aMemberDescr.get())->pAttributeTypeRef;
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aParam.bIn = true;
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aParam.bOut = false;
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eRet = cpp2uno_call(
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pCppI, aMemberDescr.get(),
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nullptr, // 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 = nullptr;
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TYPELIB_DANGER_GET(&pTD,
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static_cast<Type *>(pCallStack[2])->getTypeLibType());
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if (pTD)
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{
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XInterface * pInterface = nullptr;
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(*pCppI->getBridge()->getCppEnv()->getRegisteredInterface)(
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pCppI->getBridge()->getCppEnv(),
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reinterpret_cast<void **>(&pInterface), pCppI->getOid().pData,
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reinterpret_cast<typelib_InterfaceTypeDescription *>(pTD) );
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if (pInterface)
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{
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::uno_any_construct(
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static_cast< uno_Any * >( pCallStack[0] ),
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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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*reinterpret_cast<void **>(pRegisterReturn) = pCallStack[0];
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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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} [[fallthrough]]; // 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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reinterpret_cast<typelib_InterfaceMethodTypeDescription *>(aMemberDescr.get())->pReturnTypeRef,
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reinterpret_cast<typelib_InterfaceMethodTypeDescription *>(aMemberDescr.get())->nParams,
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reinterpret_cast<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( "no member description found!", reinterpret_cast<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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sal_Int64 cpp_vtable_call( long *pFunctionAndOffset,
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void **pCallStack )
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{
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sal_Int64 nRegReturn;
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typelib_TypeClass aType = cpp_mediate( pFunctionAndOffset[0], pFunctionAndOffset[1], pCallStack,
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&nRegReturn );
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switch( aType )
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{
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case typelib_TypeClass_BOOLEAN:
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case typelib_TypeClass_BYTE:
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nRegReturn = static_cast<unsigned long>(*reinterpret_cast<unsigned char *>(&nRegReturn));
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break;
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case typelib_TypeClass_CHAR:
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case typelib_TypeClass_UNSIGNED_SHORT:
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case typelib_TypeClass_SHORT:
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nRegReturn = static_cast<unsigned long>(*reinterpret_cast<unsigned short *>(&nRegReturn));
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break;
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case typelib_TypeClass_ENUM:
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case typelib_TypeClass_UNSIGNED_LONG:
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case typelib_TypeClass_LONG:
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nRegReturn = static_cast<unsigned long>(*reinterpret_cast<unsigned int *>(&nRegReturn));
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break;
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case typelib_TypeClass_VOID:
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default:
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break;
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}
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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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unsigned char *codeSnippet(unsigned char* code, sal_Int32 functionIndex,
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sal_Int32 vtableOffset, bool bHasHiddenParam)
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{
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if (bHasHiddenParam)
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functionIndex |= 0x80000000;
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unsigned long * p = reinterpret_cast<unsigned long *>(code);
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// ARM (not thumb) mode instructions
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// mov ip, pc
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*p++ = 0xE1A0C00F;
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// ldr pc, [pc, #4]
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*p++ = 0xE59FF004;
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*p++ = static_cast<unsigned long>(functionIndex);
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*p++ = static_cast<unsigned long>(vtableOffset);
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*p++ = reinterpret_cast<unsigned long>(privateSnippetExecutor);
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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)
|
|
{
|
|
return static_cast< Slot * >(block) + 2;
|
|
}
|
|
|
|
std::size_t bridges::cpp_uno::shared::VtableFactory::getBlockSize(
|
|
sal_Int32 slotCount)
|
|
{
|
|
return (slotCount + 2) * sizeof (Slot) + slotCount * codeSnippetSize;
|
|
}
|
|
|
|
namespace {
|
|
// Some dummy type whose RTTI is used in the synthesized proxy vtables to make uses of dynamic_cast
|
|
// on such proxy objects not crash:
|
|
struct ProxyRtti {};
|
|
}
|
|
|
|
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 = nullptr;
|
|
slots[-1].fn = &typeid(ProxyRtti);
|
|
return slots + slotCount;
|
|
}
|
|
|
|
unsigned char * bridges::cpp_uno::shared::VtableFactory::addLocalFunctions(
|
|
Slot ** slots, unsigned char * code,
|
|
#ifdef USE_DOUBLE_MMAP
|
|
sal_PtrDiff writetoexecdiff,
|
|
#endif
|
|
typelib_InterfaceTypeDescription const * type, sal_Int32 functionOffset,
|
|
sal_Int32 functionCount, sal_Int32 vtableOffset)
|
|
{
|
|
#ifndef USE_DOUBLE_MMAP
|
|
const sal_PtrDiff writetoexecdiff = 0;
|
|
#endif
|
|
(*slots) -= functionCount;
|
|
Slot * s = *slots;
|
|
for (sal_Int32 i = 0; i < type->nMembers; ++i)
|
|
{
|
|
typelib_TypeDescription * member = nullptr;
|
|
TYPELIB_DANGER_GET(&member, type->ppMembers[i]);
|
|
assert(member != 0);
|
|
switch (member->eTypeClass)
|
|
{
|
|
case typelib_TypeClass_INTERFACE_ATTRIBUTE:
|
|
{
|
|
typelib_InterfaceAttributeTypeDescription *pAttrTD =
|
|
reinterpret_cast<typelib_InterfaceAttributeTypeDescription *>( member );
|
|
|
|
// Getter:
|
|
(s++)->fn = code + writetoexecdiff;
|
|
code = codeSnippet(
|
|
code, functionOffset++, vtableOffset,
|
|
arm::return_in_hidden_param( pAttrTD->pAttributeTypeRef ));
|
|
|
|
// Setter:
|
|
if (!pAttrTD->bReadOnly)
|
|
{
|
|
(s++)->fn = code + writetoexecdiff;
|
|
code = codeSnippet(
|
|
code, functionOffset++, vtableOffset, false);
|
|
}
|
|
break;
|
|
}
|
|
case typelib_TypeClass_INTERFACE_METHOD:
|
|
{
|
|
(s++)->fn = code + writetoexecdiff;
|
|
|
|
typelib_InterfaceMethodTypeDescription *pMethodTD =
|
|
reinterpret_cast<
|
|
typelib_InterfaceMethodTypeDescription * >(member);
|
|
|
|
code = codeSnippet(code, functionOffset++, vtableOffset,
|
|
arm::return_in_hidden_param(pMethodTD->pReturnTypeRef));
|
|
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)
|
|
{
|
|
#ifndef ANDROID
|
|
static void (*clear_cache)(unsigned char const*, unsigned char const*)
|
|
= reinterpret_cast<void (*)(unsigned char const*, unsigned char const*)>
|
|
(dlsym(RTLD_DEFAULT, "__clear_cache"));
|
|
(*clear_cache)(beg, end);
|
|
#else
|
|
cacheflush((long) beg, (long) end, 0);
|
|
#endif
|
|
}
|
|
|
|
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|