diff options
Diffstat (limited to 'bridges/source/cpp_uno/msvc_win32_intel/except.cxx')
| -rw-r--r-- | bridges/source/cpp_uno/msvc_win32_intel/except.cxx | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/bridges/source/cpp_uno/msvc_win32_intel/except.cxx b/bridges/source/cpp_uno/msvc_win32_intel/except.cxx new file mode 100644 index 000000000..d65152b29 --- /dev/null +++ b/bridges/source/cpp_uno/msvc_win32_intel/except.cxx @@ -0,0 +1,189 @@ +/* -*- 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 <sal/config.h> +#include <malloc.h> +#include <typeinfo> +#include <signal.h> + +#include <rtl/alloc.h> +#include <rtl/strbuf.hxx> +#include <rtl/ustrbuf.hxx> +#include <sal/log.hxx> +#include <osl/mutex.hxx> + +#include <com/sun/star/uno/Any.hxx> +#include <unordered_map> +#include <msvc/x86.hxx> +#include <except.hxx> + +#pragma pack(push, 8) + +using namespace ::com::sun::star; + +void * ObjectFunction::operator new ( size_t nSize ) +{ + void * pMem = std::malloc( nSize ); + if (pMem != 0) + { + DWORD old_protect; + BOOL success = + VirtualProtect(pMem, nSize, PAGE_EXECUTE_READWRITE, &old_protect); + (void) success; + assert(success && "VirtualProtect() failed!"); + } + return pMem; +} + +void ObjectFunction::operator delete ( void * pMem ) +{ + std::free( pMem ); +} + +ObjectFunction::ObjectFunction( typelib_TypeDescription * pTypeDescr, void * fpFunc ) throw () + : _pTypeDescr( pTypeDescr ) +{ + ::typelib_typedescription_acquire( _pTypeDescr ); + + unsigned char * pCode = (unsigned char *)somecode; + // a must be! + assert((void *)this == (void *)pCode); + + // push ObjectFunction this + *pCode++ = 0x68; + *(void **)pCode = this; + pCode += sizeof(void *); + // jmp rel32 fpFunc + *pCode++ = 0xe9; + *(sal_Int32 *)pCode = ((unsigned char *)fpFunc) - pCode - sizeof(sal_Int32); +} + +ObjectFunction::~ObjectFunction() throw () +{ + ::typelib_typedescription_release( _pTypeDescr ); +} + +static void * __cdecl __copyConstruct( void * pExcThis, void * pSource, ObjectFunction * pThis ) + throw () +{ + ::uno_copyData(pExcThis, pSource, pThis->_pTypeDescr, uno::cpp_acquire); + return pExcThis; +} + +static void * __cdecl __destruct( void * pExcThis, ObjectFunction * pThis ) + throw () +{ + ::uno_destructData(pExcThis, pThis->_pTypeDescr, uno::cpp_release); + return pExcThis; +} + +// these are non virtual object methods; there is no this ptr on stack => ecx supplies _this_ ptr + +static __declspec(naked) void copyConstruct() throw () +{ + __asm + { + // ObjectFunction this already on stack + push [esp+8] // source exc object this + push ecx // exc object + call __copyConstruct + add esp, 12 // + ObjectFunction this + ret 4 + } +} + +static __declspec(naked) void destruct() throw () +{ + __asm + { + // ObjectFunction this already on stack + push ecx // exc object + call __destruct + add esp, 8 // + ObjectFunction this + ret + } +} + +ExceptionType::ExceptionType( typelib_TypeDescription * pTypeDescr ) throw () + : _n0( 0 ) + , _n1( 0 ) + , _n2( -1 ) + , _n3( 0 ) + , _n4( pTypeDescr->nSize ) + , _pCopyCtor( new ObjectFunction( pTypeDescr, copyConstruct ) ) + , _n5( 0 ) +{ + _pTypeInfo = RTTInfos::get(pTypeDescr->pTypeName); +} + +ExceptionType::~ExceptionType() throw () +{ + delete _pCopyCtor; +} + +RaiseInfo::RaiseInfo( typelib_TypeDescription * pTypeDescr ) throw () + : _n0( 0 ) + , _pDtor( new ObjectFunction( pTypeDescr, destruct ) ) + , _n2( 0 ) + , _n3( 0 ) + , _n4( 0 ) +{ + // a must be + static_assert(sizeof(sal_Int32) == sizeof(ExceptionType *), "### pointer size differs from sal_Int32!"); + + typelib_CompoundTypeDescription * pCompTypeDescr; + + // info count + sal_Int32 nLen = 0; + for ( pCompTypeDescr = (typelib_CompoundTypeDescription*)pTypeDescr; + pCompTypeDescr; pCompTypeDescr = pCompTypeDescr->pBaseTypeDescription ) + { + ++nLen; + } + + // info count accompanied by type info ptrs: type, base type, base base type, ... + _types = std::malloc( sizeof(sal_Int32) + (sizeof(ExceptionType *) * nLen) ); + *(sal_Int32 *)_types = nLen; + + ExceptionType ** ppTypes = (ExceptionType **)((sal_Int32 *)_types + 1); + + sal_Int32 nPos = 0; + for ( pCompTypeDescr = (typelib_CompoundTypeDescription*)pTypeDescr; + pCompTypeDescr; pCompTypeDescr = pCompTypeDescr->pBaseTypeDescription ) + { + ppTypes[nPos++] = new ExceptionType( (typelib_TypeDescription *)pCompTypeDescr ); + } +} + +RaiseInfo::~RaiseInfo() throw () +{ + ExceptionType ** ppTypes = (ExceptionType **)((sal_Int32 *)_types + 1); + for ( sal_Int32 nTypes = *(sal_Int32 *)_types; nTypes--; ) + { + delete ppTypes[nTypes]; + } + std::free( _types ); + + delete _pDtor; +} + +#pragma pack(pop) + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |