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/* -*- 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) );
assert(_types && "Don't handle OOM conditions");
*(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: */
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