From 940b4d1848e8c70ab7642901a68594e8016caffc Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 18:51:28 +0200 Subject: Adding upstream version 1:7.0.4. Signed-off-by: Daniel Baumann --- bridges/source/cpp_uno/gcc3_linux_x86-64/rtti.cxx | 281 ++++++++++++++++++++++ 1 file changed, 281 insertions(+) create mode 100644 bridges/source/cpp_uno/gcc3_linux_x86-64/rtti.cxx (limited to 'bridges/source/cpp_uno/gcc3_linux_x86-64/rtti.cxx') diff --git a/bridges/source/cpp_uno/gcc3_linux_x86-64/rtti.cxx b/bridges/source/cpp_uno/gcc3_linux_x86-64/rtti.cxx new file mode 100644 index 000000000..2e11b6eb4 --- /dev/null +++ b/bridges/source/cpp_uno/gcc3_linux_x86-64/rtti.cxx @@ -0,0 +1,281 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ + +#include + +#include +#include +#include +#include +#include +#include + +#include + +#include +#include +#include +#include +#include +#include + +#include "rtti.hxx" +#include "share.hxx" + +namespace { + +class Generated { +public: + virtual ~Generated() {}; + + virtual std::type_info * get() const = 0; +}; + +class GeneratedPlain: public Generated { +public: + GeneratedPlain(std::unique_ptr && info): info_(std::move(info)) {}; + + std::type_info * get() const override { return info_.get(); } + +private: + std::unique_ptr info_; +}; + +class GeneratedPad: public Generated { +public: +public: + GeneratedPad(std::unique_ptr && pad): pad_(std::move(pad)) {}; + + ~GeneratedPad() override { get()->~type_info(); } + + std::type_info * get() const override final + { return reinterpret_cast(pad_.get()); } + +private: + std::unique_ptr pad_; +}; + +class RTTI +{ + typedef std::unordered_map< OUString, std::type_info * > t_rtti_map; + + osl::Mutex m_mutex; + t_rtti_map m_rttis; + std::vector m_rttiNames; + std::unordered_map> m_generatedRttis; + +#if !defined ANDROID + void * m_hApp; +#endif + +public: + RTTI(); + ~RTTI(); + + std::type_info * getRTTI(typelib_TypeDescription const &); +}; + +RTTI::RTTI() +#if !defined ANDROID + : m_hApp( dlopen( nullptr, RTLD_LAZY ) ) +#endif +{ +} + +RTTI::~RTTI() +{ +#if !defined ANDROID + dlclose( m_hApp ); +#endif +} + +std::type_info * RTTI::getRTTI(typelib_TypeDescription const & pTypeDescr) +{ + std::type_info * rtti; + + OUString const & unoName = OUString::unacquired(&pTypeDescr.pTypeName); + + osl::MutexGuard guard( m_mutex ); + t_rtti_map::const_iterator iFind( m_rttis.find( unoName ) ); + if (iFind == m_rttis.end()) + { + // RTTI symbol + OStringBuffer buf( 64 ); + buf.append( "_ZTIN" ); + sal_Int32 index = 0; + do + { + OUString token( unoName.getToken( 0, '.', index ) ); + buf.append( token.getLength() ); + OString c_token( OUStringToOString( token, RTL_TEXTENCODING_ASCII_US ) ); + buf.append( c_token ); + } + while (index >= 0); + buf.append( 'E' ); + + OString symName( buf.makeStringAndClear() ); +#if !defined ANDROID + rtti = static_cast(dlsym( m_hApp, symName.getStr() )); +#else + rtti = static_cast(dlsym( RTLD_DEFAULT, symName.getStr() )); +#endif + + if (rtti) + { + std::pair< t_rtti_map::iterator, bool > insertion ( + m_rttis.insert( t_rtti_map::value_type( unoName, rtti ) ) ); + SAL_WARN_IF( !insertion.second, "bridges", "key " << unoName << " already in rtti map" ); + } + else + { + // try to lookup the symbol in the generated rtti map + auto iFind2( m_generatedRttis.find( unoName ) ); + if (iFind2 == m_generatedRttis.end()) + { + // we must generate it ! + // symbol and rtti-name is nearly identical, + // the symbol is prefixed with _ZTI + char const * rttiName = symName.getStr() +4; +#if OSL_DEBUG_LEVEL > 1 + fprintf( stderr,"generated rtti for %s\n", rttiName ); +#endif + std::unique_ptr newRtti; + switch (pTypeDescr.eTypeClass) { + case typelib_TypeClass_EXCEPTION: + { + typelib_CompoundTypeDescription const & ctd + = reinterpret_cast< + typelib_CompoundTypeDescription const &>( + pTypeDescr); + if (ctd.pBaseTypeDescription) + { + // ensure availability of base + std::type_info * base_rtti = getRTTI( + ctd.pBaseTypeDescription->aBase); + m_rttiNames.emplace_back(OString(rttiName)); + std::unique_ptr info( + new __cxxabiv1::__si_class_type_info( + m_rttiNames.back().getStr(), static_cast<__cxxabiv1::__class_type_info *>(base_rtti) )); + newRtti.reset(new GeneratedPlain(std::move(info))); + } + else + { + // this class has no base class + m_rttiNames.emplace_back(OString(rttiName)); + std::unique_ptr info( + new __cxxabiv1::__class_type_info(m_rttiNames.back().getStr())); + newRtti.reset(new GeneratedPlain(std::move(info))); + } + break; + } + case typelib_TypeClass_INTERFACE: + { + typelib_InterfaceTypeDescription const & itd + = reinterpret_cast< + typelib_InterfaceTypeDescription const &>( + pTypeDescr); + std::vector bases; + for (sal_Int32 i = 0; i != itd.nBaseTypes; ++i) { + bases.push_back(getRTTI(itd.ppBaseTypes[i]->aBase)); + } + switch (itd.nBaseTypes) { + case 0: + { + m_rttiNames.emplace_back(OString(rttiName)); + std::unique_ptr info( + new __cxxabiv1::__class_type_info( + m_rttiNames.back().getStr())); + newRtti.reset(new GeneratedPlain(std::move(info))); + break; + } + case 1: + { + m_rttiNames.emplace_back(OString(rttiName)); + std::unique_ptr info( + new __cxxabiv1::__si_class_type_info( + m_rttiNames.back().getStr(), + static_cast< + __cxxabiv1::__class_type_info *>( + bases[0]))); + newRtti.reset(new GeneratedPlain(std::move(info))); + break; + } + default: + { + m_rttiNames.emplace_back(OString(rttiName)); + auto pad = std::make_unique( + sizeof (__cxxabiv1::__vmi_class_type_info) + + ((itd.nBaseTypes - 1) + * sizeof ( + __cxxabiv1::__base_class_type_info))); + __cxxabiv1::__vmi_class_type_info * info + = new(pad.get()) + __cxxabiv1::__vmi_class_type_info( + m_rttiNames.back().getStr(), + __cxxabiv1::__vmi_class_type_info::__flags_unknown_mask); + info->__base_count = itd.nBaseTypes; + for (sal_Int32 i = 0; i != itd.nBaseTypes; ++i) + { + info->__base_info[i].__base_type + = static_cast< + __cxxabiv1::__class_type_info *>( + bases[i]); + info->__base_info[i].__offset_flags + = (__cxxabiv1::__base_class_type_info::__public_mask + | ((8 * i) << __cxxabiv1::__base_class_type_info::__offset_shift)); + } + newRtti.reset(new GeneratedPad(std::move(pad))); + break; + } + } + break; + } + default: + assert(false); // cannot happen + } + rtti = newRtti->get(); + if (newRtti) { + auto insertion ( + m_generatedRttis.emplace(unoName, std::move(newRtti))); + SAL_WARN_IF( !insertion.second, "bridges", "key " << unoName << " already in generated rtti map" ); + } + } + else // taking already generated rtti + { + rtti = iFind2->second->get(); + } + } + } + else + { + rtti = iFind->second; + } + + return rtti; +} + +struct theRttiFactory: public rtl::Static {}; + +} + +std::type_info * x86_64::getRtti(typelib_TypeDescription const & type) { + return theRttiFactory::get().getRTTI(type); +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ -- cgit v1.2.3