551 lines
20 KiB
C++
551 lines
20 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 <sal/config.h>
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#include <typeinfo>
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#include <com/sun/star/uno/RuntimeException.hpp>
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#include <sal/log.hxx>
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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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extern "C" int codeSnippets[];
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const int nFunIndexes = 8;
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const int nVtableOffsets = 4;
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using namespace ::com::sun::star::uno;
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namespace
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{
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static typelib_TypeClass cpp2uno_call(
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bridges::cpp_uno::shared::CppInterfaceProxy* pThis,
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const typelib_TypeDescription * pMemberTypeDescr,
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typelib_TypeDescriptionReference * pReturnTypeRef,
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sal_Int32 nParams,
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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: x8, lr, d0..d7, x0..x7, rest of params originally on stack
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char *pTopStack = (char *)pCallStack;
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char *pFloatRegs = pTopStack + 2;
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char *pGPRegs = pTopStack + (2+8)*8;
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char *pStackedArgs = pTopStack + (2+8+8)*8;
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int nGPR = 0;
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int nFPR = 0;
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// return
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typelib_TypeDescription * pReturnTypeDescr = 0;
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if (pReturnTypeRef)
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TYPELIB_DANGER_GET( &pReturnTypeDescr, pReturnTypeRef );
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void * pUnoReturn = 0;
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// complex return ptr: if != 0 && != pUnoReturn, reconversion need
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void * pCppReturn = 0;
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if (pReturnTypeDescr)
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{
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if (!arm::return_in_x8(pReturnTypeRef))
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pUnoReturn = pRegisterReturn; // direct way for simple types
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else // complex return via x8
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{
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pCppReturn = pCallStack[0];
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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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// Skip 'this'
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pGPRegs += 8;
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nGPR++;
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// Parameters
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void ** pUnoArgs = (void **)alloca( sizeof(void *) * nParams );
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void ** pCppArgs = (void **)alloca( sizeof(void *) * 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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int * pTempIndices = (sal_Int32 *)alloca( sizeof(int) * nParams);
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// Type descriptions for reconversions
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typelib_TypeDescription ** ppTempParamTypeDescr = (typelib_TypeDescription **)alloca( sizeof(typelib_TypeDescription *) * nParams);
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int nTempIndices = 0;
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for ( int nPos = 0; nPos < nParams; ++nPos )
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{
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const typelib_MethodParameter & rParam = pParams[nPos];
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typelib_TypeDescription * pParamTypeDescr = 0;
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TYPELIB_DANGER_GET( &pParamTypeDescr, rParam.pTypeRef );
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if (!rParam.bOut &&
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bridges::cpp_uno::shared::isSimpleType( pParamTypeDescr ))
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{
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if (nFPR < 8 && (pParamTypeDescr->eTypeClass == typelib_TypeClass_FLOAT ||
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pParamTypeDescr->eTypeClass == typelib_TypeClass_DOUBLE))
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{
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pCppArgs[nPos] = pUnoArgs[nPos] = pFloatRegs;
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pFloatRegs += 8;
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nFPR++;
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}
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else if (pParamTypeDescr->eTypeClass == typelib_TypeClass_FLOAT)
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{
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if ((pStackedArgs - pTopStack) % 4)
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pStackedArgs += 4 - ((pStackedArgs - pTopStack) % 4);
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pCppArgs[nPos] = pUnoArgs[nPos] = pStackedArgs;
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pStackedArgs += 4;
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}
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else if (pParamTypeDescr->eTypeClass == typelib_TypeClass_DOUBLE)
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{
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if ((pStackedArgs - pTopStack) % 8)
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pStackedArgs += 8 - ((pStackedArgs - pTopStack) % 8);
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pCppArgs[nPos] = pUnoArgs[nPos] = pStackedArgs;
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pStackedArgs += 8;
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}
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else if (nGPR < 8)
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{
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pCppArgs[nPos] = pUnoArgs[nPos] = pGPRegs;
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pGPRegs += 8;
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nGPR++;
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}
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else
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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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if ((pStackedArgs - pTopStack) % 8)
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pStackedArgs += 8 - ((pStackedArgs - pTopStack) % 8);
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pCppArgs[nPos] = pUnoArgs[nPos] = pStackedArgs;
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pStackedArgs += 8;
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break;
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case typelib_TypeClass_ENUM:
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case typelib_TypeClass_LONG:
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case typelib_TypeClass_UNSIGNED_LONG:
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if ((pStackedArgs - pTopStack) % 4)
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pStackedArgs += 4 - ((pStackedArgs - pTopStack) % 4);
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pCppArgs[nPos] = pUnoArgs[nPos] = pStackedArgs;
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pStackedArgs += 4;
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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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if ((pStackedArgs - pTopStack) % 2)
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pStackedArgs += 1;
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pCppArgs[nPos] = pUnoArgs[nPos] = pStackedArgs;
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pStackedArgs += 2;
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break;
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case typelib_TypeClass_BOOLEAN:
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case typelib_TypeClass_BYTE:
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pCppArgs[nPos] = pUnoArgs[nPos] = pStackedArgs;
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pStackedArgs += 1;
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break;
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default:
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assert(!"should not happen");
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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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if (nGPR < 8)
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{
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pCppArgs[nPos] = *(void **)pGPRegs;
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pGPRegs += 8;
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}
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else
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{
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if ((pStackedArgs - pTopStack) % 8)
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pStackedArgs += 8 - ((pStackedArgs - pTopStack) % 8);
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pCppArgs[nPos] = pStackedArgs;
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pStackedArgs += 8;
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}
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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] =
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alloca( pParamTypeDescr->nSize ),
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pCppArgs[nPos], 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] = pCppArgs[nPos];
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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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// 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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int nIndex = pTempIndices[nTempIndices];
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if (pParams[nIndex].bIn) // is in/inout => was constructed
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uno_destructData( pUnoArgs[nIndex],
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ppTempParamTypeDescr[nTempIndices], 0 );
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TYPELIB_DANGER_RELEASE( ppTempParamTypeDescr[nTempIndices] );
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}
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if (pReturnTypeDescr)
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TYPELIB_DANGER_RELEASE( pReturnTypeDescr );
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CPPU_CURRENT_NAMESPACE::raiseException( &aUnoExc,
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pThis->getBridge()->getUno2Cpp() ); // has to destruct the any
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// is here for dummy
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return typelib_TypeClass_VOID;
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}
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else // else no exception occurred...
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{
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// temporary params
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for ( ; nTempIndices--; )
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{
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int nIndex = pTempIndices[nTempIndices];
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typelib_TypeDescription * pParamTypeDescr =
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ppTempParamTypeDescr[nTempIndices];
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if (pParams[nIndex].bOut) // inout/out
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{
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// convert and assign
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uno_destructData( pCppArgs[nIndex], pParamTypeDescr,
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cpp_release );
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uno_copyAndConvertData( pCppArgs[nIndex], pUnoArgs[nIndex],
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pParamTypeDescr, pThis->getBridge()->getUno2Cpp() );
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}
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// destroy temp uno param
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uno_destructData( pUnoArgs[nIndex], pParamTypeDescr, 0 );
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TYPELIB_DANGER_RELEASE( pParamTypeDescr );
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}
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// return
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if (pCppReturn) // has complex return
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{
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if (pUnoReturn != pCppReturn) // needs reconversion
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{
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uno_copyAndConvertData( pCppReturn, pUnoReturn,
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pReturnTypeDescr, pThis->getBridge()->getUno2Cpp() );
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// destroy temp uno return
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uno_destructData( pUnoReturn, pReturnTypeDescr, 0 );
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}
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*(void **)pRegisterReturn = pCppReturn;
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}
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if (pReturnTypeDescr)
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{
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typelib_TypeClass eRet =
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(typelib_TypeClass)pReturnTypeDescr->eTypeClass;
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TYPELIB_DANGER_RELEASE( pReturnTypeDescr );
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return eRet;
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}
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else
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return typelib_TypeClass_VOID;
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}
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}
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static void cpp_mediate(sal_Int32 nFunctionIndex,
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sal_Int32 nVtableOffset,
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void ** pCallStack)
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{
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sal_Int64 nRegReturn;
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sal_Int64 *pRegisterReturn = &nRegReturn;
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// pCallStack: x8, lr, d0..d7, x0..x7, rest of params originally on stack
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// _this_ ptr is patched cppu_XInterfaceProxy object
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void *pThis = pCallStack[2 + 8];
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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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// determine called method
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assert( nFunctionIndex < pTypeDescr->nMapFunctionIndexToMemberIndex );
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if (nFunctionIndex >= pTypeDescr->nMapFunctionIndexToMemberIndex)
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{
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throw RuntimeException( "illegal vtable index!", (XInterface *)pCppI );
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}
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sal_Int32 nMemberPos =
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pTypeDescr->pMapFunctionIndexToMemberIndex[nFunctionIndex];
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assert( nMemberPos < pTypeDescr->nAllMembers );
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TypeDescription aMemberDescr( pTypeDescr->ppAllMembers[nMemberPos] );
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typelib_TypeClass eRet;
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switch (aMemberDescr.get()->eTypeClass)
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{
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case typelib_TypeClass_INTERFACE_ATTRIBUTE:
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{
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if (pTypeDescr->pMapMemberIndexToFunctionIndex[nMemberPos] ==
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nFunctionIndex)
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{
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// is GET method
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eRet = cpp2uno_call(
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pCppI, aMemberDescr.get(),
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((typelib_InterfaceAttributeTypeDescription *)aMemberDescr.get())->pAttributeTypeRef,
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0, 0, // no params
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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,
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reinterpret_cast<Type *>(pCallStack[2])->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[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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*(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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} // else perform queryInterface()
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[[fallthrough]];
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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( "no member description found!", (XInterface *)pCppI );
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}
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}
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(void)eRet;
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return;
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}
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}
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/**
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* is called on incoming vtable calls
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* (called by asm snippets)
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*/
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extern "C" void cpp_vtable_call( sal_Int32 func, sal_Int32 offset,
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void **pStack )
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{
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cpp_mediate(func, offset, pStack);
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}
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namespace
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{
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unsigned char *codeSnippet(const typelib_InterfaceTypeDescription *type,
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const typelib_TypeDescription *member,
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sal_Int32 functionIndex,
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sal_Int32 vtableOffset)
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{
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// For now temporarily assert when we get here. The intent is
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// that we won't need the code snippets at all on iOS.
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assert(false);
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assert(functionIndex < nFunIndexes);
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if (!(functionIndex < nFunIndexes))
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return NULL;
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assert(vtableOffset < nVtableOffsets);
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if (!(vtableOffset < nVtableOffsets))
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return NULL;
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// The codeSnippets table is indexed by functionIndex and vtableOffset
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int index = functionIndex*nVtableOffsets + vtableOffset;
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unsigned char *result = ((unsigned char *) &codeSnippets) + codeSnippets[index];
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SAL_INFO( "bridges", "codeSnippet(" << OUString(type->aBase.pTypeName) << "::" << OUString(member->pTypeName) << "): [" << functionIndex << "," << vtableOffset << "]=" << (void *) result << " (" << std::hex << ((int*)result)[0] << "," << ((int*)result)[1] << "," << ((int*)result)[2] << "," << ((int*)result)[3] << ")");
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return result;
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}
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}
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struct bridges::cpp_uno::shared::VtableFactory::Slot { void const * fn; };
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bridges::cpp_uno::shared::VtableFactory::Slot *
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bridges::cpp_uno::shared::VtableFactory::mapBlockToVtable(void * block)
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{
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return static_cast< Slot * >(block) + 2;
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}
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std::size_t bridges::cpp_uno::shared::VtableFactory::getBlockSize(
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sal_Int32 slotCount)
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{
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return (slotCount + 2) * sizeof (Slot);
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}
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namespace {
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// Some dummy type whose RTTI is used in the synthesized proxy vtables to make uses of dynamic_cast
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// on such proxy objects not crash:
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struct ProxyRtti {};
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}
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bridges::cpp_uno::shared::VtableFactory::Slot *
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bridges::cpp_uno::shared::VtableFactory::initializeBlock(
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void * block, sal_Int32 slotCount, sal_Int32,
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typelib_InterfaceTypeDescription *)
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{
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Slot * slots = mapBlockToVtable(block);
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|
slots[-2].fn = 0;
|
|
slots[-1].fn = &typeid(ProxyRtti);
|
|
return slots + slotCount;
|
|
}
|
|
|
|
unsigned char * bridges::cpp_uno::shared::VtableFactory::addLocalFunctions(
|
|
Slot ** slots,
|
|
unsigned char * code,
|
|
typelib_InterfaceTypeDescription const * type,
|
|
sal_Int32 functionOffset,
|
|
sal_Int32 functionCount,
|
|
sal_Int32 vtableOffset)
|
|
{
|
|
(*slots) -= functionCount;
|
|
Slot * s = *slots;
|
|
for (sal_Int32 i = 0; i < type->nMembers; ++i)
|
|
{
|
|
typelib_TypeDescription * member = 0;
|
|
TYPELIB_DANGER_GET(&member, type->ppMembers[i]);
|
|
assert(member != 0);
|
|
switch (member->eTypeClass)
|
|
{
|
|
case typelib_TypeClass_INTERFACE_ATTRIBUTE:
|
|
{
|
|
typelib_InterfaceAttributeTypeDescription *pAttrTD =
|
|
reinterpret_cast<typelib_InterfaceAttributeTypeDescription *>( member );
|
|
|
|
// Getter:
|
|
(s++)->fn = codeSnippet( type, member, functionOffset++, vtableOffset );
|
|
|
|
// Setter:
|
|
if (!pAttrTD->bReadOnly)
|
|
{
|
|
(s++)->fn = codeSnippet( type, member, functionOffset++, vtableOffset );
|
|
}
|
|
break;
|
|
}
|
|
case typelib_TypeClass_INTERFACE_METHOD:
|
|
{
|
|
(s++)->fn = codeSnippet( type, member, functionOffset++, vtableOffset );
|
|
break;
|
|
}
|
|
default:
|
|
assert(false);
|
|
break;
|
|
}
|
|
TYPELIB_DANGER_RELEASE(member);
|
|
}
|
|
return code;
|
|
}
|
|
|
|
|
|
|
|
void bridges::cpp_uno::shared::VtableFactory::flushCode(
|
|
unsigned char const *, unsigned char const *)
|
|
{
|
|
// No dynamic code generation so nothing to flush
|
|
}
|
|
|
|
|
|
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|