AOO410/main/bridges/source/cpp_uno/cc50_solaris_intel/except.cxx

/**************************************************************
 * 
 * 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
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * 
 *************************************************************/



// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_bridges.hxx"

#include <cstddef>
#include <dlfcn.h>
#include <new.h>
#include <typeinfo>
#include <list>
#include <map>
#include <rtl/alloc.h>
#include <osl/diagnose.h>

#include <rtl/strbuf.hxx>
#include <typelib/typedescription.hxx>
#include <com/sun/star/uno/Any.hxx>

#include "bridges/cpp_uno/shared/arraypointer.hxx"

#include "cc50_solaris_intel.hxx"

#include <hash.cxx>

// need a += operator for OString and sal_Char
namespace rtl
{
	inline OString& operator+=( OString& rString, sal_Char cAdd )
	{
		sal_Char add[2];
		add[0] = cAdd;
		add[1] = 0;
		return rString += add;
	}
}

using namespace std;
using namespace osl;
using namespace rtl;
using namespace com::sun::star::uno;

namespace CPPU_CURRENT_NAMESPACE
{

static OString toUNOname( const OString & rRTTIname )
{
	OString aRet;

	const sal_Char* pRTTI = rRTTIname.getStr();
	const sal_Char* pOrg  = pRTTI;
	const sal_Char* pLast = pRTTI;

	while( 1 )
	{
		if( *pRTTI == ':' || ! *pRTTI )
		{
			if( !aRet.isEmpty() )
				aRet += ".";
			aRet += rRTTIname.copy( pLast - pOrg, pRTTI - pLast );
			while( *pRTTI == ':' )
				pRTTI++;
			pLast = pRTTI;
			if( ! *pRTTI )
				break;
		}
		else
			pRTTI++;
	}

	return aRet;
}
//==================================================================================================
static OString toRTTIname( const OString & rUNOname )
{
	OStringBuffer aRet( rUNOname.getLength()*2 );

    sal_Int32 nIndex = 0;
    do
    {
        if( nIndex > 0 )
            aRet.append( "::" );
        aRet.append( rUNOname.getToken( 0, '.', nIndex ) );
    } while( nIndex != -1 );

	return aRet.makeStringAndClear();
}
//==================================================================================================

static OString toRTTImangledname( const OString & rRTTIname )
{
	if( rRTTIname.isEmpty() )
		return OString();

	OStringBuffer aRet( rRTTIname.getLength()*2 );

    aRet.append( "__1n" );
    sal_Int32 nIndex = 0;
    do
    {
        OString aToken( rRTTIname.getToken( 0, ':', nIndex ) );
        int nBytes = aToken.getLength();
        if( nBytes )
        {
            if( nBytes  > 25 )
            {
                aRet.append( (sal_Char)( nBytes/26 + 'a' ) );
                aRet.append( (sal_Char)( nBytes%26 + 'A' ) );
            }
            else
                aRet.append( (sal_Char)( nBytes + 'A' ) );
            for (sal_Int32 i = 0; i < aToken.getLength(); ++i) {
                char c = aToken[i];
                if (c == 'Q') {
                    aRet.append("QdD");
                } else {
                    aRet.append(c);
                }
            }
        }
    } while( nIndex != -1 );

	aRet.append( '_' );

	return aRet.makeStringAndClear();
}

//##################################################################################################
//#### RTTI simulation #############################################################################
//##################################################################################################

class RTTIHolder
{
	std::map< OString, void* > aAllRTTI;
public:
	~RTTIHolder();

	void* getRTTI( const OString& rTypename );
	void* getRTTI_UnoName( const OString& rUnoTypename )
		{ return getRTTI( toRTTIname( rUnoTypename ) ); }

	void* insertRTTI( const OString& rTypename );
	void* insertRTTI_UnoName( const OString& rTypename )
		{ return insertRTTI( toRTTIname( rTypename ) ); }
	void* generateRTTI( typelib_CompoundTypeDescription* pCompTypeDescr );
};

RTTIHolder::~RTTIHolder()
{
	for ( std::map< OString, void* >::const_iterator iPos( aAllRTTI.begin() );
		  iPos != aAllRTTI.end(); ++iPos )
	{
        delete[] static_cast< char * >(iPos->second);
	}
}

#if OSL_DEBUG_LEVEL > 1
#include <stdio.h>
#endif

void* RTTIHolder::getRTTI( const OString& rTypename )
{
	std::map< OString, void* >::iterator element;

	element = aAllRTTI.find( rTypename );
	if( element != aAllRTTI.end() )
		return (*element).second;

	// create rtti structure
	element = aAllRTTI.find( rTypename );
	if( element != aAllRTTI.end() )
		return (*element).second;

	return NULL;
}

static long nMagicId = 1;

void* RTTIHolder::insertRTTI( const OString& rTypename )
{
	OString aMangledName( toRTTImangledname( rTypename ) );
	NIST_Hash aHash( aMangledName.getStr(), aMangledName.getLength() );


	// rSuperTypename MUST exist !!!
    std::size_t const RTTI_SIZE = 19; // 14???
	void** pRTTI = reinterpret_cast< void ** >(
        new char[RTTI_SIZE * sizeof (void *) + strlen(rTypename.getStr()) + 1]);
	pRTTI[  0 ] = reinterpret_cast< void * >(RTTI_SIZE * sizeof (void *));
	pRTTI[  1 ] = NULL;
	pRTTI[  2 ] = (void*)(7*sizeof(void*));
	pRTTI[  3 ] = (void*)aHash.getHash()[0];
	pRTTI[  4 ] = (void*)aHash.getHash()[1];
	pRTTI[  5 ] = (void*)aHash.getHash()[2];
	pRTTI[  6 ] = (void*)aHash.getHash()[3];
	pRTTI[  7 ] = NULL;
	pRTTI[  8 ] = NULL;

	pRTTI[  9 ] = pRTTI[ 3 ];
	pRTTI[ 10 ] = pRTTI[ 4 ];
	pRTTI[ 11 ] = pRTTI[ 5 ];
	pRTTI[ 12 ] = pRTTI[ 6 ];
	pRTTI[ 13 ] = (void*)0x80000000;
    strcpy(reinterpret_cast< char * >(pRTTI + RTTI_SIZE), rTypename.getStr());

	aAllRTTI[ rTypename ] = (void*)pRTTI;
#if OSL_DEBUG_LEVEL > 1
	fprintf( stderr,
			 "generating base RTTI for type %s:\n"
			 "   mangled: %s\n"
			 "   hash: %.8x %.8x %.8x %.8x\n",
			 rTypename.getStr(),
			 aMangledName.getStr(),
			 pRTTI[ 3 ], pRTTI[ 4 ], pRTTI[ 5 ], pRTTI[ 6 ]
			 );
#endif
	return pRTTI;
}

void* RTTIHolder::generateRTTI( typelib_CompoundTypeDescription * pCompTypeDescr )
{
	OString aUNOCompTypeName( OUStringToOString( pCompTypeDescr->aBase.pTypeName, RTL_TEXTENCODING_ASCII_US ) );
	OString aRTTICompTypeName( toRTTIname( aUNOCompTypeName ) );

	void* pHaveRTTI = getRTTI( aRTTICompTypeName );
	if( pHaveRTTI )
		return pHaveRTTI;

	if( ! pCompTypeDescr->pBaseTypeDescription )
		// this is a base type
		return insertRTTI( aRTTICompTypeName );

	// get base class RTTI
	void* pSuperRTTI = generateRTTI( pCompTypeDescr->pBaseTypeDescription );
	OSL_ENSURE( pSuperRTTI, "could not generate RTTI for supertype !" );

	// find out the size to allocate for RTTI
	void** pInherit = (void**)((sal_uInt32)pSuperRTTI + ((sal_uInt32*)pSuperRTTI)[2] + 8);
	int nInherit;
	for( nInherit = 1; pInherit[ nInherit*5-1 ] != (void*)0x80000000; nInherit++ )
		;

	OString aMangledName( toRTTImangledname( aRTTICompTypeName ) );
	NIST_Hash aHash( aMangledName.getStr(), aMangledName.getLength() );

    std::size_t const rttiSize = 14 + nInherit * 5;
	void** pRTTI = reinterpret_cast< void ** >(
        new char[
            rttiSize * sizeof (void *)
            + strlen(aRTTICompTypeName.getStr()) + 1]);
	pRTTI[  0 ] = reinterpret_cast< void * >(rttiSize * sizeof (void *));
	pRTTI[  1 ] = NULL;
	pRTTI[  2 ] = (void*)(7*sizeof(void*));
	pRTTI[  3 ] = (void*)aHash.getHash()[0];
	pRTTI[  4 ] = (void*)aHash.getHash()[1];
	pRTTI[  5 ] = (void*)aHash.getHash()[2];
	pRTTI[  6 ] = (void*)aHash.getHash()[3];
	pRTTI[  7 ] = NULL;
	pRTTI[  8 ] = NULL;

	memcpy( pRTTI+9, pInherit, 4*nInherit*5 );
	pRTTI[ 8 +nInherit*5 ] = NULL;
	pRTTI[ 9 +nInherit*5 ] = pRTTI[ 3 ];
	pRTTI[ 10+nInherit*5 ] = pRTTI[ 4 ];
	pRTTI[ 11+nInherit*5 ] = pRTTI[ 5 ];
	pRTTI[ 12+nInherit*5 ] = pRTTI[ 6 ];
	pRTTI[ 13+nInherit*5 ] = (void*)0x80000000;
    strcpy(
        reinterpret_cast< char * >(pRTTI + rttiSize),
        aRTTICompTypeName.getStr());

	aAllRTTI[ aRTTICompTypeName ] = (void*)pRTTI;

#if OSL_DEBUG_LEVEL > 1
	fprintf( stderr,
			 "generating struct RTTI for type %s:\n"
			 "   mangled: %s\n"
			 "   hash: %.8x %.8x %.8X %.8x\n",
			 aRTTICompTypeName.getStr(),
			 aMangledName.getStr(),
			 pRTTI[ 3 ], pRTTI[ 4 ], pRTTI[ 5 ], pRTTI[ 6 ]
			 );
#endif

	return pRTTI;
}

//__________________________________________________________________________________________________

static void deleteException(
    void* pExc, unsigned char* thunk, typelib_TypeDescription* pType )
{
 	uno_destructData(
        pExc, pType, reinterpret_cast< uno_ReleaseFunc >(cpp_release) );
 	typelib_typedescription_release( pType );
    delete[] thunk;
}

//__________________________________________________________________________________________________

//##################################################################################################
//#### exported ####################################################################################
//##################################################################################################

void cc50_solaris_intel_raiseException( uno_Any * pUnoExc, uno_Mapping * pUno2Cpp )
{
#if OSL_DEBUG_LEVEL > 1
    OString cstr(
        OUStringToOString(
            *reinterpret_cast< OUString const * >( &pUnoExc->pType->pTypeName ),
            RTL_TEXTENCODING_ASCII_US ) );
    fprintf( stderr, "> uno exception occured: %s\n", cstr.getStr() );
#endif
    bridges::cpp_uno::shared::ArrayPointer< unsigned char > thunkPtr(
        new unsigned char[24]);
	typelib_TypeDescription * pTypeDescr = 0;
	// will be released by deleteException
	typelib_typedescriptionreference_getDescription( &pTypeDescr, pUnoExc->pType );

	void* pRTTI;
	{
	static ::osl::Mutex aMutex;
	::osl::Guard< ::osl::Mutex > guard( aMutex );

	static RTTIHolder * s_pRTTI = 0;
	if (! s_pRTTI)
	{
#ifdef LEAK_STATIC_DATA
		s_pRTTI = new RTTIHolder();
#else
		static RTTIHolder s_aRTTI;
		s_pRTTI = &s_aRTTI;
#endif
	}

	pRTTI = s_pRTTI->generateRTTI( (typelib_CompoundTypeDescription *)pTypeDescr );
	}

	// a must be
	OSL_ENSURE( sizeof(sal_Int32) == sizeof(void *), "### pointer size differs from sal_Int32!" );

	void * pCppExc = __Crun::ex_alloc( pTypeDescr->nSize );
	uno_copyAndConvertData( pCppExc, pUnoExc->pData, pTypeDescr, pUno2Cpp );

	// destruct uno exception
	uno_any_destruct( pUnoExc, 0 );

    unsigned char * thunk = thunkPtr.release();
    // movl %esp, %ecx:
    thunk[0] = 0x8B;
    thunk[1] = 0xCC;
    // pushl pTypeDescr:
    thunk[2] = 0x68;
    *reinterpret_cast< void ** >(thunk + 3) = pTypeDescr;
    // pushl thunk:
    thunk[7] = 0x68;
    *reinterpret_cast< void ** >(thunk + 8) = thunk;
    // pushl 4(%ecx):
    thunk[12] = 0xFF;
    thunk[13] = 0x71;
    thunk[14] = 0x04;
    // call deleteException:
    thunk[15] = 0xE8;
#pragma disable_warn
    void * d = reinterpret_cast< void * >(deleteException);
#pragma enable_warn
    *reinterpret_cast< std::ptrdiff_t * >(thunk + 16) =
        static_cast< unsigned char * >(d) - (thunk + 20);
    // addl $12, %esp:
    thunk[20] = 0x83;
    thunk[21] = 0xC4;
    thunk[22] = 0x0C;
    // ret:
    thunk[23] = 0xC3;

#pragma disable_warn
    void (* f)(void *) = reinterpret_cast< void (*)(void *) >(thunk);
#pragma enable_warn
	__Crun::ex_throw(pCppExc, (const __Crun::static_type_info*)pRTTI, f);
}

void cc50_solaris_intel_fillUnoException(
	void* pCppExc,
	const char* pInfo,
	uno_Any* pUnoExc,
	uno_Mapping * pCpp2Uno )
{
    OSL_ASSERT( pInfo != 0 );
    OString uno_name( toUNOname( pInfo ) );
    OUString aName( OStringToOUString(
                        uno_name, RTL_TEXTENCODING_ASCII_US ) );
    typelib_TypeDescription * pExcTypeDescr = 0;
    typelib_typedescription_getByName( &pExcTypeDescr, aName.pData );

    if (pExcTypeDescr == 0) // the thing that should not be
    {
        RuntimeException aRE(
            OUString( RTL_CONSTASCII_USTRINGPARAM(
                          "exception type not found: ") ) + aName,
            Reference< XInterface >() );
        Type const & rType = ::getCppuType( &aRE );
        uno_type_any_constructAndConvert(
            pUnoExc, &aRE, rType.getTypeLibType(), pCpp2Uno );
#if OSL_DEBUG_LEVEL > 0
        OString cstr( OUStringToOString(
                          aRE.Message, RTL_TEXTENCODING_ASCII_US ) );
        OSL_ENSURE( 0, cstr.getStr() );
#endif
        return;
    }

#if OSL_DEBUG_LEVEL > 1
    fprintf( stderr, "> c++ exception occured: %s\n",
             ::rtl::OUStringToOString(
                 pExcTypeDescr->pTypeName,
                 RTL_TEXTENCODING_ASCII_US ).getStr() );
#endif
    // construct uno exception any
    uno_any_constructAndConvert(
        pUnoExc, pCppExc, pExcTypeDescr, pCpp2Uno );
    typelib_typedescription_release( pExcTypeDescr );
}

}