564 lines
21 KiB
C++
564 lines
21 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
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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 "call.hxx"
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#include "share.hxx"
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#include "abi.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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namespace CPPU_CURRENT_NAMESPACE
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{
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bool is_complex_struct(const typelib_TypeDescription* type)
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{
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const typelib_CompoundTypeDescription* p
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= reinterpret_cast<const typelib_CompoundTypeDescription*>(type);
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for (sal_Int32 i = 0; i < p->nMembers; ++i)
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{
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if (p->ppTypeRefs[i]->eTypeClass == typelib_TypeClass_STRUCT
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|| p->ppTypeRefs[i]->eTypeClass == typelib_TypeClass_EXCEPTION)
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{
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typelib_TypeDescription* t = 0;
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TYPELIB_DANGER_GET(&t, p->ppTypeRefs[i]);
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bool b = is_complex_struct(t);
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TYPELIB_DANGER_RELEASE(t);
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if (b)
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{
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return true;
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}
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}
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else if (!bridges::cpp_uno::shared::isSimpleType(p->ppTypeRefs[i]->eTypeClass))
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return true;
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}
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if (p->pBaseTypeDescription != 0)
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return is_complex_struct(&p->pBaseTypeDescription->aBase);
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return false;
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}
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bool return_in_hidden_param(typelib_TypeDescriptionReference* pTypeRef)
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{
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if (bridges::cpp_uno::shared::isSimpleType(pTypeRef))
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return false;
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else if (pTypeRef->eTypeClass == typelib_TypeClass_STRUCT
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|| pTypeRef->eTypeClass == typelib_TypeClass_EXCEPTION)
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{
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typelib_TypeDescription* pTypeDescr = 0;
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TYPELIB_DANGER_GET(&pTypeDescr, pTypeRef);
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//A Composite Type not larger than 16 bytes is returned in up to two GPRs
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bool bRet = pTypeDescr->nSize > 16 || is_complex_struct(pTypeDescr);
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TYPELIB_DANGER_RELEASE(pTypeDescr);
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return bRet;
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}
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return true;
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}
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}
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namespace
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{
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static int cpp2uno_call(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, void** gpreg,
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void** fpreg, void** ovrflw,
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sal_uInt64* pRegisterReturn /* space for register return */)
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{
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sal_Int32 gCount = 0;
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sal_Int32 fCount = 0;
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sal_Int32 sp = 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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loongarch64::ReturnKind returnKind
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= (pReturnTypeRef == nullptr || pReturnTypeRef->eTypeClass == typelib_TypeClass_VOID)
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? loongarch64::ReturnKind::RegistersInt
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: loongarch64::getReturnKind(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 (CPPU_CURRENT_NAMESPACE::return_in_hidden_param(pReturnTypeRef))
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{
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pCppReturn = gpreg[gCount++]; // complex return via ptr (pCppReturn)
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pUnoReturn = (bridges::cpp_uno::shared::relatesToInterfaceType(pReturnTypeDescr)
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? alloca(pReturnTypeDescr->nSize)
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: pCppReturn); // direct way
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}
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else
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{
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pUnoReturn = pRegisterReturn; // direct way for simple types
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}
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}
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// pop this
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gCount++;
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// stack space
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static_assert(sizeof(void*) == sizeof(sal_Int64), "### 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
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= (typelib_TypeDescription**)(pUnoArgs + (3 * nParams));
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sal_Int32 nTempIndices = 0;
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for (sal_Int32 nPos = 0; nPos < nParams; ++nPos)
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{
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const typelib_MethodParameter& rParam = pParams[nPos];
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typelib_TypeDescription* pParamTypeDescr = 0;
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TYPELIB_DANGER_GET(&pParamTypeDescr, rParam.pTypeRef);
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if (!rParam.bOut && bridges::cpp_uno::shared::isSimpleType(pParamTypeDescr)) // value
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{
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switch (pParamTypeDescr->eTypeClass)
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{
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case typelib_TypeClass_FLOAT:
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case typelib_TypeClass_DOUBLE:
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pCppArgs[nPos]
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= fCount != MAX_FP_REGS
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? &(fpreg[fCount++])
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: (gCount != MAX_GP_REGS ? &(gpreg[gCount++]) : &(ovrflw[sp++]));
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pUnoArgs[nPos] = pCppArgs[nPos];
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break;
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default:
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pCppArgs[nPos] = gCount == MAX_GP_REGS ? &(ovrflw[sp++]) : &(gpreg[gCount++]);
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pUnoArgs[nPos] = pCppArgs[nPos];
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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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void* pCppStack;
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pCppStack = gCount == MAX_GP_REGS ? ovrflw[sp++] : gpreg[gCount++];
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pCppArgs[nPos] = 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(pParamTypeDescr))
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{
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uno_copyAndConvertData(pUnoArgs[nPos] = alloca(pParamTypeDescr->nSize), pCppStack,
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pParamTypeDescr, 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] = 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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}
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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,
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&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], 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 -1;
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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_DANGER_RELEASE(pReturnTypeDescr);
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}
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switch (returnKind)
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{
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case loongarch64::ReturnKind::RegistersIntFloat:
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memcpy(pRegisterReturn + 1, static_cast<char*>(pUnoReturn) + 4, 4);
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[[fallthrough]];
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case loongarch64::ReturnKind::RegistersIntFp:
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return 0;
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case loongarch64::ReturnKind::RegistersFloatInt:
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memcpy(pRegisterReturn + 1, static_cast<char*>(pUnoReturn) + 4, 4);
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[[fallthrough]];
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case loongarch64::ReturnKind::RegistersFpInt:
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return 1;
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case loongarch64::ReturnKind::RegistersTwoFloat:
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memcpy(pRegisterReturn + 1, static_cast<char*>(pUnoReturn) + 4, 4);
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[[fallthrough]];
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default:
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return -1;
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}
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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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int cpp_vtable_call(sal_Int32 nFunctionIndex, sal_Int32 nVtableOffset, void** gpreg, void** fpreg,
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void** ovrflw, sal_uInt64* pRegisterReturn /* space for register return */)
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{
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static_assert(sizeof(sal_Int64) == sizeof(void*), "### unexpected!");
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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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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(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("bridges", "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(("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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int 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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typelib_TypeDescriptionReference* pAttrTypeRef
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= reinterpret_cast<typelib_InterfaceAttributeTypeDescription*>(aMemberDescr.get())
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->pAttributeTypeRef;
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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(pCppI, aMemberDescr.get(), pAttrTypeRef, 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 = pAttrTypeRef;
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aParam.bIn = sal_True;
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aParam.bOut = sal_False;
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eRet = cpp2uno_call(pCppI, aMemberDescr.get(),
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0, // indicates void return
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1, &aParam, 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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// 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 = -1;
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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 = -1;
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break;
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case 0: // queryInterface() opt
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{
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typelib_TypeDescription* pTD = 0;
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TYPELIB_DANGER_GET(&pTD, reinterpret_cast<Type*>(gpreg[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(), (void**)&pInterface,
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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(reinterpret_cast<uno_Any*>(gpreg[0]), &pInterface,
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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)[0] = gpreg[0];
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eRet = -1;
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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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typelib_InterfaceMethodTypeDescription* pMethodTD
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= reinterpret_cast<typelib_InterfaceMethodTypeDescription*>(
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aMemberDescr.get());
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eRet = cpp2uno_call(pCppI, aMemberDescr.get(), pMethodTD->pReturnTypeRef,
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pMethodTD->nParams, pMethodTD->pParams, gpreg, fpreg,
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ovrflw, 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*)pThis);
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}
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}
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return eRet;
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}
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extern "C" void privateSnippetExecutor(...);
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int const codeSnippetSize = 0x34;
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unsigned char* codeSnippet(unsigned char* code, sal_Int32 functionIndex, sal_Int32 vtableOffset,
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bool bHasHiddenParam)
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{
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if (bHasHiddenParam)
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functionIndex |= 0x80000000;
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unsigned int* p = (unsigned int*)code;
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assert((((unsigned long)code) & 0x3) == 0); //aligned to 4 otherwise a mistake
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/* generate this code */
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/*
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# index
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0: 14000012 lu12i.w $t6,0x0
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4: 34420000 ori $t6,$t6,0x0
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# privateSnippetExecutor
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8: 14000014 lu12i.w $t8,0x0
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c: 03800294 ori $t8,$t8,0x0
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10: 16000014 lu32i.d $t8,0x0
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14: 03000294 lu52i.d $t8,$t8,0x0
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# cpp_vtable_call
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18: 14000011 lu12i.w $t5,0x0
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1c: 03800231 ori $t5,$t5,0x0
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20: 16000011 lu32i.d $t5,0x0
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24: 03000231 lu52i.d $t5,$t5,0x0
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# offset
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28: 14000013 lu12i.w $t7,0x0
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2c: 03800273 ori $t7,$t7,0x0
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30: 4c000280 jr $t8
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*/
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*p++ = 0x14000012 | (((functionIndex >> 12) & 0x000fffff) << 5);
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*p++ = 0x03800252 | ((functionIndex & 0x00000fff) << 10);
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*p++ = 0x14000014 | (((((unsigned long)privateSnippetExecutor) >> 12) & 0x000fffff) << 5);
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*p++ = 0x03800294 | ((((unsigned long)privateSnippetExecutor) & 0x00000fff) << 10);
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*p++ = 0x16000014 | (((((unsigned long)privateSnippetExecutor) >> 32) & 0x000fffff) << 5);
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*p++ = 0x03000294 | (((((unsigned long)privateSnippetExecutor) >> 52) & 0x00000fff) << 10);
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*p++ = 0x14000011 | (((((unsigned long)cpp_vtable_call) >> 12) & 0x000fffff) << 5);
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*p++ = 0x03800231 | ((((unsigned long)cpp_vtable_call) & 0x00000fff) << 10);
|
|
*p++ = 0x16000011 | (((((unsigned long)cpp_vtable_call) >> 32) & 0x000fffff) << 5);
|
|
*p++ = 0x03000231 | (((((unsigned long)cpp_vtable_call) >> 52) & 0x00000fff) << 10);
|
|
*p++ = 0x14000013 | (((vtableOffset >> 12) & 0x000fffff) << 5);
|
|
*p++ = 0x03800273 | ((vtableOffset & 0x00000fff) << 10);
|
|
*p++ = 0x4c000280;
|
|
return (code + codeSnippetSize);
|
|
}
|
|
}
|
|
|
|
void bridges::cpp_uno::shared::VtableFactory::flushCode(unsigned char const* bptr,
|
|
unsigned char const* eptr)
|
|
{
|
|
asm volatile("ibar 0" :::);
|
|
}
|
|
|
|
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;
|
|
|
|
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,
|
|
CPPU_CURRENT_NAMESPACE::return_in_hidden_param(
|
|
reinterpret_cast<typelib_InterfaceAttributeTypeDescription*>(member)
|
|
->pAttributeTypeRef));
|
|
|
|
// Setter:
|
|
if (!reinterpret_cast<typelib_InterfaceAttributeTypeDescription*>(member)
|
|
->bReadOnly)
|
|
{
|
|
(s++)->fn = code + writetoexecdiff;
|
|
code = codeSnippet(code, functionOffset++, vtableOffset, false);
|
|
}
|
|
break;
|
|
|
|
case typelib_TypeClass_INTERFACE_METHOD:
|
|
(s++)->fn = code + writetoexecdiff;
|
|
code = codeSnippet(
|
|
code, functionOffset++, vtableOffset,
|
|
CPPU_CURRENT_NAMESPACE::return_in_hidden_param(
|
|
reinterpret_cast<typelib_InterfaceMethodTypeDescription*>(member)
|
|
->pReturnTypeRef));
|
|
break;
|
|
|
|
default:
|
|
assert(false);
|
|
break;
|
|
}
|
|
TYPELIB_DANGER_RELEASE(member);
|
|
}
|
|
return code;
|
|
}
|
|
|
|
/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */
|