813 lines
26 KiB
C++
813 lines
26 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 <com/sun/star/uno/genfunc.hxx>
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#include <sal/log.hxx>
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#include <typelib/typedescription.hxx>
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#include <uno/data.h>
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#include <osl/endian.h>
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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 <stdio.h>
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#include <string.h>
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#include <typeinfo>
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using namespace com::sun::star::uno;
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//#define BRDEBUG
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#ifdef BRDEBUG
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#include <rtl/strbuf.hxx>
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#include <rtl/ustrbuf.hxx>
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using namespace ::std;
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using namespace ::osl;
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using namespace ::rtl;
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#endif
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#ifndef ANDROID
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#include <sys/sysmips.h>
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#endif
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#ifdef ANDROID
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#include <unistd.h>
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#endif
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#ifdef OSL_BIGENDIAN
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#define IS_BIG_ENDIAN 1
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#else
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#define IS_BIG_ENDIAN 0
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#endif
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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, // 0 indicates void return
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sal_Int32 nParams, typelib_MethodParameter * pParams,
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void ** gpreg, void ** /*fpreg*/, void ** ovrflw,
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sal_Int64 * pRegisterReturn /* space for register return */ )
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{
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/* Most MIPS ABIs view the arguments as a struct, of which the
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first N words go in registers and the rest go on the stack. If I < N, the
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Ith word might go in Ith integer argument register or the Ith
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floating-point one. For these ABIs, we only need to remember the number
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of words passed so far. We are interested only in o32 ABI,so it is the
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case.
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*/
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int nw = 0; // number of words used by arguments
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#ifdef BRDEBUG
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fprintf(stderr,"cpp2uno_call1\n");
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#endif
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/* C++ has [ret *] or this as the first arguments, so no arguments will
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* be passed in floating-point registers?
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*/
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//int int_seen = 0; // have we seen integer arguments?
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void ** pCppStack; //temporary stack pointer
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// gpreg: [ret *], this, [gpr params]
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// fpreg: [fpr params]
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// ovrflw: [gpr or fpr params (properly aligned)]
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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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#ifdef BRDEBUG
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fprintf(stderr,"cpp2uno_call:simplereturn\n");
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#endif
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}
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else // complex return via ptr (pCppReturn)
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{
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pCppReturn = *(void **)gpreg;
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gpreg++;
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nw++;
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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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#ifdef BRDEBUG
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fprintf(stderr,"cpp2uno_call:complexreturn\n");
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#endif
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}
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}
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// pop this
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gpreg++;
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nw++;
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// stack space
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static_assert(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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// indices of values this have to be converted (interface conversion 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 = (typelib_TypeDescription **)(pUnoArgs + (3 * nParams));
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sal_Int32 nTempIndices = 0;
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#ifdef BRDEBUG
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fprintf(stderr,"cpp2uno_call:nParams=%d\n",nParams);
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#endif
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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 && bridges::cpp_uno::shared::isSimpleType( pParamTypeDescr ))
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// value
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{
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switch (pParamTypeDescr->eTypeClass)
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{
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case typelib_TypeClass_DOUBLE:
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case typelib_TypeClass_HYPER:
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case typelib_TypeClass_UNSIGNED_HYPER:
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#ifdef BRDEBUG
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fprintf(stderr,"cpp2uno_call:hyper=%d,%p\n",pParamTypeDescr->eTypeClass,gpreg[0]);
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#endif
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if (nw < 3) {
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if (nw & 1) {
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nw++;
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gpreg++;
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}
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#ifdef BRDEBUG
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fprintf(stderr,"cpp2uno_call:gpreg=%p,%p\n",gpreg[0],gpreg[1]);
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#endif
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pCppArgs[nPos] = gpreg;
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pUnoArgs[nPos] = gpreg;
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nw += 2;
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gpreg += 2;
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} else {
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if (((long)ovrflw) & 4) ovrflw++;
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#ifdef BRDEBUG
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fprintf(stderr,"cpp2uno_call:overflw=%p,%p\n",ovrflw[0],ovrflw[1]);
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#endif
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pCppArgs[nPos] = ovrflw;
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pUnoArgs[nPos] = ovrflw;
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ovrflw += 2;
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}
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break;
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case typelib_TypeClass_BYTE:
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case typelib_TypeClass_BOOLEAN:
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#ifdef BRDEBUG
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fprintf(stderr,"cpp2uno_call:byte=%p,%p\n",gpreg[0],ovrflw[0]);
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#endif
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if (nw < 4) {
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pCppArgs[nPos] = ((char *)gpreg + 3*IS_BIG_ENDIAN);
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pUnoArgs[nPos] = ((char *)gpreg + 3*IS_BIG_ENDIAN);
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nw++;
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gpreg++;
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} else {
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pCppArgs[nPos] = ((char *)ovrflw + 3*IS_BIG_ENDIAN);
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pUnoArgs[nPos] = ((char *)ovrflw + 3*IS_BIG_ENDIAN);
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ovrflw++;
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}
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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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#ifdef BRDEBUG
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fprintf(stderr,"cpp2uno_call:char=%p,%p\n",gpreg[0],ovrflw[0]);
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#endif
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if (nw < 4) {
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pCppArgs[nPos] = ((char *)gpreg + 2*IS_BIG_ENDIAN);
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pUnoArgs[nPos] = ((char *)gpreg + 2*IS_BIG_ENDIAN);
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nw++;
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gpreg++;
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} else {
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pCppArgs[nPos] = ((char *)ovrflw + 2*IS_BIG_ENDIAN);
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pUnoArgs[nPos] = ((char *)ovrflw + 2*IS_BIG_ENDIAN);
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ovrflw++;
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}
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break;
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default:
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#ifdef BRDEBUG
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fprintf(stderr,"cpp2uno_call:def=%p,%p\n",gpreg[0],ovrflw[0]);
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#endif
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if (nw < 4) {
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pCppArgs[nPos] = gpreg;
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pUnoArgs[nPos] = gpreg;
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nw++;
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gpreg++;
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} else {
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pCppArgs[nPos] = ovrflw;
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pUnoArgs[nPos] = ovrflw;
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ovrflw++;
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}
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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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#ifdef BRDEBUG
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fprintf(stderr,"cpp2uno_call:ptr|ref\n");
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#endif
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if (nw < 4) {
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pCppArgs[nPos] = *(void **)gpreg;
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pCppStack = gpreg;
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nw++;
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gpreg++;
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} else {
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pCppArgs[nPos] = *(void **)ovrflw;
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pCppStack = ovrflw;
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ovrflw++;
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}
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#ifdef BRDEBUG
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fprintf(stderr,"cpp2uno_call:pCppStack=%p\n",pCppStack);
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#endif
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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( 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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#ifdef BRDEBUG
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fprintf(stderr,"cpp2uno_call:related to interface,%p,%d,pUnoargs[%d]=%p\n",*(void**)pCppStack,pParamTypeDescr->nSize,nPos,pUnoArgs[nPos]);
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#endif
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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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#ifdef BRDEBUG
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fprintf(stderr,"cpp2uno_call:direct,pUnoArgs[%d]=%p\n",nPos,pUnoArgs[nPos]);
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#endif
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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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}
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#ifdef BRDEBUG
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fprintf(stderr,"cpp2uno_call2,%p,unoargs=%p\n",pThis->getUnoI()->pDispatcher,pUnoArgs);
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#endif
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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)( pThis->getUnoI(), pMemberTypeDescr, pUnoReturn, pUnoArgs, &pUnoExc );
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#ifdef BRDEBUG
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fprintf(stderr,"cpp2uno_call2,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], 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, 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 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 = 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, 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 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 = (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,
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sal_Int32 nVtableOffset,
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void ** gpreg, void ** fpreg, void ** ovrflw,
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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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#ifdef BRDEBUG
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fprintf(stderr,"cpp_mediate1 gp=%p,fp=%p,ov=%p\n",gpreg,fpreg,ovrflw);
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fprintf(stderr,"gp=%p,%p,%p,%p\n",gpreg[0],gpreg[1],gpreg[2],gpreg[3]);
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#endif
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// gpreg: [ret *], this, [other gpr params]
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// fpreg: [fpr params]
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// ovrflw: [gpr or fpr params (properly aligned)]
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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 = gpreg[1];
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}
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else
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{
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pThis = gpreg[0];
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}
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#ifdef BRDEBUG
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fprintf(stderr,"cpp_mediate12,pThis=%p, nFunctionIndex=%d,nVtableOffset=%d\n",pThis,nFunctionIndex,nVtableOffset);
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#endif
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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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#ifdef BRDEBUG
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fprintf(stderr,"cpp_mediate13,pCppI=%p\n",pCppI);
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#endif
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typelib_InterfaceTypeDescription * pTypeDescr = pCppI->getTypeDescr();
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#ifdef BRDEBUG
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fprintf(stderr,"cpp_mediate2\n");
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#endif
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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 *)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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assert(nMemberPos < pTypeDescr->nAllMembers);
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TypeDescription aMemberDescr( pTypeDescr->ppAllMembers[nMemberPos] );
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#ifdef BRDEBUG
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fprintf(stderr,"cpp_mediate3\n");
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OString cstr( OUStringToOString( aMemberDescr.get()->pTypeName, RTL_TEXTENCODING_ASCII_US ) );
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fprintf( stderr, "calling %s, nFunctionIndex=%d\n", cstr.getStr(), nFunctionIndex );
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#endif
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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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#ifdef BRDEBUG
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fprintf(stderr,"cpp_mediate4\n");
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#endif
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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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gpreg, fpreg, ovrflw, 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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gpreg, fpreg, ovrflw, 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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|
#ifdef BRDEBUG
|
|
fprintf(stderr,"cpp_mediate5\n");
|
|
#endif
|
|
// is METHOD
|
|
switch (nFunctionIndex)
|
|
{
|
|
case 1: // acquire()
|
|
pCppI->acquireProxy(); // non virtual call!
|
|
eRet = typelib_TypeClass_VOID;
|
|
break;
|
|
case 2: // release()
|
|
#ifdef BRDEBUG
|
|
fprintf(stderr,"cpp_mediate51\n");
|
|
#endif
|
|
pCppI->releaseProxy(); // non virtual call!
|
|
eRet = typelib_TypeClass_VOID;
|
|
#ifdef BRDEBUG
|
|
fprintf(stderr,"cpp_mediate52\n");
|
|
#endif
|
|
break;
|
|
case 0: // queryInterface() opt
|
|
{
|
|
typelib_TypeDescription * pTD = 0;
|
|
TYPELIB_DANGER_GET( &pTD, reinterpret_cast< Type * >( gpreg[2] )->getTypeLibType() );
|
|
if (pTD)
|
|
{
|
|
XInterface * pInterface = 0;
|
|
(*pCppI->getBridge()->getCppEnv()->getRegisteredInterface)(
|
|
pCppI->getBridge()->getCppEnv(),
|
|
(void **)&pInterface, pCppI->getOid().pData,
|
|
(typelib_InterfaceTypeDescription *)pTD );
|
|
|
|
if (pInterface)
|
|
{
|
|
::uno_any_construct(
|
|
reinterpret_cast< uno_Any * >( gpreg[0] ),
|
|
&pInterface, pTD, cpp_acquire );
|
|
pInterface->release();
|
|
TYPELIB_DANGER_RELEASE( pTD );
|
|
*(void **)pRegisterReturn = gpreg[0];
|
|
eRet = typelib_TypeClass_ANY;
|
|
break;
|
|
}
|
|
TYPELIB_DANGER_RELEASE( pTD );
|
|
}
|
|
} // else perform queryInterface()
|
|
default:
|
|
eRet = cpp2uno_call(
|
|
pCppI, aMemberDescr.get(),
|
|
((typelib_InterfaceMethodTypeDescription *)aMemberDescr.get())->pReturnTypeRef,
|
|
((typelib_InterfaceMethodTypeDescription *)aMemberDescr.get())->nParams,
|
|
((typelib_InterfaceMethodTypeDescription *)aMemberDescr.get())->pParams,
|
|
gpreg, fpreg, ovrflw, pRegisterReturn );
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
{
|
|
#ifdef BRDEBUG
|
|
fprintf(stderr,"cpp_mediate6\n");
|
|
#endif
|
|
throw RuntimeException( "no member description found!", (XInterface *)pThis );
|
|
}
|
|
}
|
|
|
|
return eRet;
|
|
}
|
|
|
|
/**
|
|
* is called on incoming vtable calls
|
|
* (called by asm snippets)
|
|
*/
|
|
// static void cpp_vtable_call( int nFunctionIndex, int nVtableOffset, void** gpregptr, void** fpregptr, void** ovrflw)
|
|
// static void cpp_vtable_call( int nFunctionIndex, int nVtableOffset, void** gpregptr, void** ovrflw)
|
|
static void cpp_vtable_call()
|
|
{
|
|
int nFunctionIndex;
|
|
int vTableOffset;
|
|
void** pCallStack;
|
|
void** ovrflw;
|
|
|
|
sal_Int32 gpreg[4];
|
|
double fpreg[2];
|
|
|
|
//memcpy( fpreg, fpregptr, 16);
|
|
|
|
volatile long nRegReturn[2];
|
|
|
|
__asm__( "sw $4, %0\n\t"
|
|
"sw $5, %1\n\t"
|
|
"sw $6, %2\n\t"
|
|
"sw $7, %3\n\t"
|
|
::"m"(nFunctionIndex), "m"(vTableOffset), "m"(pCallStack), "m"(ovrflw) );
|
|
|
|
memcpy( gpreg, pCallStack, 16);
|
|
|
|
#ifdef BRDEBUG
|
|
fprintf(stderr,"in cpp_vtable_call nFunctionIndex is %d\n",nFunctionIndex);
|
|
fprintf(stderr,"in cpp_vtable_call nVtableOffset is %d\n",vTableOffset);
|
|
fprintf(stderr,"gp=%x,%x,%x,%x\n",gpreg[0],gpreg[1],gpreg[2],gpreg[3]);
|
|
#endif
|
|
|
|
//sal_Bool bComplex = nFunctionIndex & 0x80000000 ? sal_True : sal_False;
|
|
|
|
typelib_TypeClass aType =
|
|
cpp_mediate( nFunctionIndex, vTableOffset, (void**)gpreg, (void**)fpreg, ovrflw, (sal_Int64*)nRegReturn );
|
|
|
|
switch( aType )
|
|
{
|
|
|
|
// move return value into register space
|
|
// (will be loaded by machine code snippet)
|
|
|
|
case typelib_TypeClass_BOOLEAN:
|
|
case typelib_TypeClass_BYTE:
|
|
__asm__( "lbu $2,%0\n\t" : :
|
|
"m"(nRegReturn[0]) );
|
|
break;
|
|
|
|
case typelib_TypeClass_CHAR:
|
|
case typelib_TypeClass_UNSIGNED_SHORT:
|
|
__asm__( "lhu $2,%0\n\t" : :
|
|
"m"(nRegReturn[0]) );
|
|
break;
|
|
|
|
case typelib_TypeClass_SHORT:
|
|
__asm__( "lh $2,%0\n\t" : :
|
|
"m"(nRegReturn[0]) );
|
|
break;
|
|
|
|
|
|
case typelib_TypeClass_FLOAT:
|
|
__asm__( "lwc1 $f0,%0\n\t" : :
|
|
"m" (*((float*)nRegReturn)) );
|
|
break;
|
|
|
|
case typelib_TypeClass_DOUBLE:
|
|
{ register double dret asm("$f0");
|
|
dret = (*((double*)nRegReturn));
|
|
(void) dret;
|
|
}
|
|
break;
|
|
|
|
case typelib_TypeClass_HYPER:
|
|
case typelib_TypeClass_UNSIGNED_HYPER:
|
|
__asm__( "lw $3,%0\n\t" : :
|
|
"m"(nRegReturn[1]) ); // fall through
|
|
|
|
default:
|
|
__asm__( "lw $2,%0\n\t" : :
|
|
"m"(nRegReturn[0]) );
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
int const codeSnippetSize = 56;
|
|
|
|
unsigned char * codeSnippet( unsigned char * code, sal_Int32 functionIndex, sal_Int32 vtableOffset,
|
|
bool simpleRetType)
|
|
{
|
|
|
|
#ifdef BRDEBUG
|
|
fprintf(stderr,"in codeSnippet functionIndex is %d\n", functionIndex);
|
|
fprintf(stderr,"in codeSnippet vtableOffset is %d\n", vtableOffset);
|
|
fflush(stderr);
|
|
#endif
|
|
|
|
if (! simpleRetType )
|
|
functionIndex |= 0x80000000;
|
|
|
|
unsigned long * p = (unsigned long *) code;
|
|
|
|
// static_assert( sizeof (long) == 4 );
|
|
assert((((unsigned long)code) & 0x3) == 0 ); //aligned to 4 otherwise a mistake
|
|
|
|
/* generate this code */
|
|
/*
|
|
#save regs into argument space required by mips abi
|
|
c: afa40000 sw a0,0(sp)
|
|
10: afa50004 sw a1,4(sp)
|
|
14: afa60008 sw a2,8(sp)
|
|
18: afa7000c sw a3,12(sp)
|
|
#a0=index
|
|
1c: 3c040000 lui a0,0x0
|
|
20: 34840000 ori a0,a0,0x0
|
|
#a1=offset
|
|
24: 3c050000 lui a1,0x0
|
|
28: 34a50000 ori a1,a1,0x0
|
|
#a2=gpregptr
|
|
2c: 27a60000 addiu a2,sp,0
|
|
#a3=ovrflw
|
|
30: 27a70010 addiu a3,sp,16
|
|
#load cpp_vtable_call addr
|
|
34: 3c190000 lui t9,0x0
|
|
38: 37390000 ori t9,t9,0
|
|
#jmp to the function,note: we don't use jalr, that will destroy $ra
|
|
#but be sure to use t9! gp calculation depends on it
|
|
3c: 03200008 jr t9
|
|
40: 00000000 nop
|
|
|
|
be careful, we use the argument space reserved by the caller to
|
|
write down regs. This can avoid the need to make use of arbitrary far away
|
|
stack space or to allocate a function frame for this code snippet itself.
|
|
Since only functions with variable arguments will overwrite the space,
|
|
cpp_vtable_call should be safe.
|
|
??? gcc seems change this behavior! cpp_vtable_call overwrite the space!
|
|
*/
|
|
|
|
* p++ = 0xafa40000;
|
|
* p++ = 0xafa50004;
|
|
* p++ = 0xafa60008;
|
|
* p++ = 0xafa7000c;
|
|
* p++ = 0x3c040000 | ((functionIndex>>16) & 0x0000ffff);
|
|
* p++ = 0x34840000 | (functionIndex & 0x0000ffff);
|
|
* p++ = 0x3c050000 | ((vtableOffset>>16) & 0x0000ffff);
|
|
* p++ = 0x34a50000 | (vtableOffset & 0x0000ffff);
|
|
* p++ = 0x27a60000;
|
|
* p++ = 0x27a70010;
|
|
* p++ = 0x3c190000 | ((((unsigned long)cpp_vtable_call) >> 16) & 0x0000ffff);
|
|
* p++ = 0x37390000 | (((unsigned long)cpp_vtable_call) & 0x0000FFFF);
|
|
* p++ = 0x03200008;
|
|
* p++ = 0x00000000;
|
|
return (code + codeSnippetSize);
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
void bridges::cpp_uno::shared::VtableFactory::flushCode(unsigned char const *bptr, unsigned char const *eptr)
|
|
{
|
|
#ifndef ANDROID
|
|
(void) bptr;
|
|
(void) eptr;
|
|
sysmips(FLUSH_CACHE,0,0,0);
|
|
#else
|
|
cacheflush((long) bptr, (long) eptr, 0);
|
|
#endif
|
|
}
|
|
|
|
struct bridges::cpp_uno::shared::VtableFactory::Slot { void const * fn; };
|
|
|
|
bridges::cpp_uno::shared::VtableFactory::Slot *
|
|
bridges::cpp_uno::shared::VtableFactory::mapBlockToVtable(void * block)
|
|
{
|
|
return static_cast< Slot * >(block) + 2;
|
|
}
|
|
|
|
|
|
std::size_t bridges::cpp_uno::shared::VtableFactory::getBlockSize(
|
|
sal_Int32 slotCount)
|
|
{
|
|
return (slotCount + 2) * sizeof (Slot) + 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 = 0; //null
|
|
slots[-1].fn = &typeid(ProxyRtti);
|
|
return slots + slotCount;
|
|
}
|
|
|
|
unsigned char * bridges::cpp_uno::shared::VtableFactory::addLocalFunctions(
|
|
Slot ** slots, unsigned char * code, sal_PtrDiff writetoexecdiff,
|
|
typelib_InterfaceTypeDescription const * type, sal_Int32 functionOffset,
|
|
sal_Int32 functionCount, sal_Int32 vtableOffset)
|
|
{
|
|
(*slots) -= functionCount;
|
|
Slot * s = *slots;
|
|
#ifdef BRDEBUG
|
|
fprintf(stderr, "in addLocalFunctions functionOffset is %d\n",functionOffset);
|
|
fprintf(stderr, "in addLocalFunctions vtableOffset is %d\n",vtableOffset);
|
|
fprintf(stderr, "nMembers=%d\n",type->nMembers);
|
|
fflush(stderr);
|
|
#endif
|
|
|
|
for (sal_Int32 i = 0; i < type->nMembers; ++i) {
|
|
typelib_TypeDescription * member = 0;
|
|
TYPELIB_DANGER_GET(&member, type->ppMembers[i]);
|
|
assert(member != 0);
|
|
switch (member->eTypeClass) {
|
|
case typelib_TypeClass_INTERFACE_ATTRIBUTE:
|
|
// Getter:
|
|
(s++)->fn = code + writetoexecdiff;
|
|
code = codeSnippet(
|
|
code, functionOffset++, vtableOffset,
|
|
bridges::cpp_uno::shared::isSimpleType(
|
|
reinterpret_cast<
|
|
typelib_InterfaceAttributeTypeDescription * >(
|
|
member)->pAttributeTypeRef));
|
|
|
|
// Setter:
|
|
if (!reinterpret_cast<
|
|
typelib_InterfaceAttributeTypeDescription * >(
|
|
member)->bReadOnly)
|
|
{
|
|
(s++)->fn = code + writetoexecdiff;
|
|
code = codeSnippet(code, functionOffset++, vtableOffset, true);
|
|
}
|
|
break;
|
|
|
|
case typelib_TypeClass_INTERFACE_METHOD:
|
|
(s++)->fn = code + writetoexecdiff;
|
|
code = codeSnippet(
|
|
code, functionOffset++, vtableOffset,
|
|
bridges::cpp_uno::shared::isSimpleType(
|
|
reinterpret_cast<
|
|
typelib_InterfaceMethodTypeDescription * >(
|
|
member)->pReturnTypeRef));
|
|
break;
|
|
|
|
default:
|
|
assert(false);
|
|
break;
|
|
}
|
|
TYPELIB_DANGER_RELEASE(member);
|
|
}
|
|
return code;
|
|
}
|
|
|
|
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|