libreoffice/bridges/source/cpp_uno/cc50_solaris_intel/cpp2uno.cxx

/*************************************************************************
 *
 *  $RCSfile: cpp2uno.cxx,v $
 *
 *  $Revision: 1.3 $
 *
 *  last change: $Author: svesik $ $Date: 2001-02-06 22:20:37 $
 *
 *  The Contents of this file are made available subject to the terms of
 *  either of the following licenses
 *
 *         - GNU Lesser General Public License Version 2.1
 *         - Sun Industry Standards Source License Version 1.1
 *
 *  Sun Microsystems Inc., October, 2000
 *
 *  GNU Lesser General Public License Version 2.1
 *  =============================================
 *  Copyright 2000 by Sun Microsystems, Inc.
 *  901 San Antonio Road, Palo Alto, CA 94303, USA
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License version 2.1, as published by the Free Software Foundation.
 *
 *  This library is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 *  MA  02111-1307  USA
 *
 *
 *  Sun Industry Standards Source License Version 1.1
 *  =================================================
 *  The contents of this file are subject to the Sun Industry Standards
 *  Source License Version 1.1 (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.openoffice.org/license.html.
 *
 *  Software provided under this License is provided on an "AS IS" basis,
 *  WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
 *  WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
 *  MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
 *  See the License for the specific provisions governing your rights and
 *  obligations concerning the Software.
 *
 *  The Initial Developer of the Original Code is: Sun Microsystems, Inc.
 *
 *  Copyright: 2000 by Sun Microsystems, Inc.
 *
 *  All Rights Reserved.
 *
 *  Contributor(s): _______________________________________
 *
 *
 ************************************************************************/
#define LEAK_STATIC_DATA
//  #define TRACE(x) OSL_TRACE(x)
#define TRACE(x)

#include <alloca.h>
#include <list>
#include <map>

#ifndef _RTL_ALLOC_H_
#include <rtl/alloc.h>
#endif
#ifndef _OSL_MUTEX_HXX_
#include <osl/mutex.hxx>
#endif

#ifndef _TYPELIB_TYPEDESCRIPTION_HXX_
#include <typelib/typedescription.hxx>
#endif
#ifndef _UNO_DATA_H_
#include <uno/data.h>
#endif
#ifndef _BRIDGES_CPP_UNO_BRIDGE_HXX_
#include <bridges/cpp_uno/bridge.hxx>
#endif
#ifndef _BRIDGES_CPP_UNO_TYPE_MISC_HXX_
#include <bridges/cpp_uno/type_misc.hxx>
#endif

#include "cc50_solaris_intel.hxx"

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

extern "C"
{
    void privateSnippetExecutor();
}

namespace CPPU_CURRENT_NAMESPACE
{

//==================================================================================================
static inline typelib_TypeClass cpp2uno_call(
    cppu_cppInterfaceProxy * pThis,
    const typelib_TypeDescription * pMemberTypeDescr,
    typelib_TypeDescriptionReference * pReturnTypeRef, // 0 indicates void return
    sal_Int32 nParams, typelib_MethodParameter * pParams,
    void ** pCallStack,
    sal_Int64 * pRegisterReturn /* space for register return */ )
{
    // pCallStack: [return ptr], this, params
    char * pCppStack = (char *)(pCallStack +1);

    // return
    typelib_TypeDescription * pReturnTypeDescr = 0;
    if (pReturnTypeRef)
        TYPELIB_DANGER_GET( &pReturnTypeDescr, pReturnTypeRef );

    void * pUnoReturn = 0;
    void * pCppReturn = 0; // complex return ptr: if != 0 && != pUnoReturn, reconversion need

    if (pReturnTypeDescr)
    {
        if (cppu_isSimpleType( pReturnTypeDescr ))
        {
            pUnoReturn = pRegisterReturn; // direct way for simple types
        }
        else // complex return via ptr (pCppReturn)
        {
            pCppReturn = *(void**)pCppStack;
            pCppStack += sizeof( void* );
            pUnoReturn = (cppu_relatesToInterface( pReturnTypeDescr )
                          ? alloca( pReturnTypeDescr->nSize )
                          : pCppReturn); // direct way
        }
    }
    // pop this
    pCppStack += sizeof( void* );

    // stack space
    OSL_ENSHURE( sizeof(void *) == sizeof(sal_Int32), "### unexpected size!" );
    // parameters
    void ** pUnoArgs = (void **)alloca( 4 * sizeof(void *) * nParams );
    void ** pCppArgs = pUnoArgs + nParams;
    // indizes of values this have to be converted (interface conversion cpp<=>uno)
    sal_Int32 * pTempIndizes = (sal_Int32 *)(pUnoArgs + (2 * nParams));
    // type descriptions for reconversions
    typelib_TypeDescription ** ppTempParamTypeDescr = (typelib_TypeDescription **)(pUnoArgs + (3 * nParams));

    sal_Int32 nTempIndizes   = 0;

    for ( sal_Int32 nPos = 0; nPos < nParams; ++nPos )
    {
        const typelib_MethodParameter & rParam = pParams[nPos];
        typelib_TypeDescription * pParamTypeDescr = 0;
        TYPELIB_DANGER_GET( &pParamTypeDescr, rParam.pTypeRef );

        if (!rParam.bOut && cppu_isSimpleType( pParamTypeDescr )) // value
        {
            pCppArgs[ nPos ] = pUnoArgs[ nPos ] = pCppStack;
            switch (pParamTypeDescr->eTypeClass)
            {
            case typelib_TypeClass_HYPER:
            case typelib_TypeClass_UNSIGNED_HYPER:
            case typelib_TypeClass_DOUBLE:
                pCppStack += sizeof(sal_Int32); // extra long
            }
            // no longer needed
            TYPELIB_DANGER_RELEASE( pParamTypeDescr );
        }
        else // ptr to complex value | ref
        {
            pCppArgs[nPos] = *(void **)pCppStack;

            if (! rParam.bIn) // is pure out
            {
                // uno out is unconstructed mem!
                pUnoArgs[nPos] = alloca( pParamTypeDescr->nSize );
                pTempIndizes[nTempIndizes] = nPos;
                // will be released at reconversion
                ppTempParamTypeDescr[nTempIndizes++] = pParamTypeDescr;
            }
            // is in/inout
            else if (cppu_relatesToInterface( pParamTypeDescr ))
            {
                uno_copyAndConvertData( pUnoArgs[nPos] = alloca( pParamTypeDescr->nSize ),
                                        *(void **)pCppStack, pParamTypeDescr,
                                        &pThis->pBridge->aCpp2Uno );
                pTempIndizes[nTempIndizes] = nPos; // has to be reconverted
                // will be released at reconversion
                ppTempParamTypeDescr[nTempIndizes++] = pParamTypeDescr;
            }
            else // direct way
            {
                pUnoArgs[nPos] = *(void **)pCppStack;
                // no longer needed
                TYPELIB_DANGER_RELEASE( pParamTypeDescr );
            }
        }
        pCppStack += sizeof(sal_Int32); // standard parameter length
    }

    // ExceptionHolder
    uno_Any aUnoExc; // Any will be constructed by callee
    uno_Any * pUnoExc = &aUnoExc;

    // invoke uno dispatch call
    (*pThis->pUnoI->pDispatcher)( pThis->pUnoI, pMemberTypeDescr, pUnoReturn, pUnoArgs, &pUnoExc );

    // in case no exception occured...
    if (pUnoExc)
    {
        // destruct temporary in/inout params
        for ( ; nTempIndizes--; )
        {
            sal_Int32 nIndex = pTempIndizes[nTempIndizes];

            if (pParams[nIndex].bIn) // is in/inout => was constructed
                uno_destructData( pUnoArgs[nIndex], ppTempParamTypeDescr[nTempIndizes], 0 );
            TYPELIB_DANGER_RELEASE( ppTempParamTypeDescr[nTempIndizes] );
        }
        if (pReturnTypeDescr)
            TYPELIB_DANGER_RELEASE( pReturnTypeDescr );

        cc50_solaris_intel_raiseException( &aUnoExc, &pThis->pBridge->aUno2Cpp ); // has to destruct the any
        // is here for dummy
        return typelib_TypeClass_VOID;
    }
    else // else no exception occured...
    {
        // temporary params
        for ( ; nTempIndizes--; )
        {
            sal_Int32 nIndex = pTempIndizes[nTempIndizes];
            typelib_TypeDescription * pParamTypeDescr = ppTempParamTypeDescr[nTempIndizes];

            if (pParams[nIndex].bOut) // inout/out
            {
                // convert and assign
                uno_destructData( pCppArgs[nIndex], pParamTypeDescr, cpp_release );
                uno_copyAndConvertData( pCppArgs[nIndex], pUnoArgs[nIndex], pParamTypeDescr,
                                        &pThis->pBridge->aUno2Cpp );
            }
            // destroy temp uno param
            uno_destructData( pUnoArgs[nIndex], pParamTypeDescr, 0 );

            TYPELIB_DANGER_RELEASE( pParamTypeDescr );
        }
        // return
        if (pCppReturn) // has complex return
        {
            if (pUnoReturn != pCppReturn) // needs reconversion
            {
                uno_copyAndConvertData( pCppReturn, pUnoReturn, pReturnTypeDescr,
                                        &pThis->pBridge->aUno2Cpp );
                // destroy temp uno return
                uno_destructData( pUnoReturn, pReturnTypeDescr, 0 );
            }
            // complex return ptr is set to eax
            *(void **)pRegisterReturn = pCppReturn;
        }
        if (pReturnTypeDescr)
        {
            typelib_TypeClass eRet = (typelib_TypeClass)pReturnTypeDescr->eTypeClass;
            TYPELIB_DANGER_RELEASE( pReturnTypeDescr );
            return eRet;
        }
        else
            return typelib_TypeClass_VOID;
    }
}


//==================================================================================================
static inline typelib_TypeClass cpp_mediate(
    sal_Int32 nVtableCall,
    void ** pCallStack,
    sal_Int64 * pRegisterReturn /* space for register return */ )
{
    OSL_ENSHURE( sizeof(sal_Int32)==sizeof(void *), "### unexpected!" );

    // pCallStack: this, params
    // _this_ ptr is patched cppu_Interface object
    cppu_cppInterfaceProxy * pCppI = NULL;
    if( nVtableCall & 0x80000000 )
    {
        nVtableCall &= 0x7fffffff;
        pCppI = (cppu_cppInterfaceProxy *)(XInterface *)*(pCallStack +2);
    }
    else
        pCppI = (cppu_cppInterfaceProxy *)(XInterface *)*(pCallStack +1);

    typelib_InterfaceTypeDescription * pTypeDescr = pCppI->pTypeDescr;

    OSL_ENSHURE( nVtableCall < pTypeDescr->nMapFunctionIndexToMemberIndex,
                 "### illegal vtable index!" );
    if (nVtableCall >= pTypeDescr->nMapFunctionIndexToMemberIndex)
    {
        throw RuntimeException( OUString::createFromAscii("illegal vtable index!"), (XInterface *)pCppI );
    }

    // determine called method
    OSL_ENSHURE( nVtableCall < pTypeDescr->nMapFunctionIndexToMemberIndex, "### illegal vtable index!" );
    sal_Int32 nMemberPos = pTypeDescr->pMapFunctionIndexToMemberIndex[nVtableCall];
    OSL_ENSHURE( nMemberPos < pTypeDescr->nAllMembers, "### illegal member index!" );

    TypeDescription aMemberDescr( pTypeDescr->ppAllMembers[nMemberPos] );

    typelib_TypeClass eRet;
    switch (aMemberDescr.get()->eTypeClass)
    {
    case typelib_TypeClass_INTERFACE_ATTRIBUTE:
    {
        if (pTypeDescr->pMapMemberIndexToFunctionIndex[nMemberPos] == nVtableCall)
        {
            // is GET method
            eRet = cpp2uno_call(
                pCppI, aMemberDescr.get(),
                ((typelib_InterfaceAttributeTypeDescription *)aMemberDescr.get())->pAttributeTypeRef,
                0, 0, // no params
                pCallStack, pRegisterReturn );
        }
        else
        {
            // is SET method
            typelib_MethodParameter aParam;
            aParam.pTypeRef =
                ((typelib_InterfaceAttributeTypeDescription *)aMemberDescr.get())->pAttributeTypeRef;
            aParam.bIn      = sal_True;
            aParam.bOut     = sal_False;

            eRet = cpp2uno_call(
                pCppI, aMemberDescr.get(),
                0, // indicates void return
                1, &aParam,
                pCallStack, pRegisterReturn );
        }
        break;
    }
    case typelib_TypeClass_INTERFACE_METHOD:
    {
        // is METHOD
        switch (nVtableCall)
        {
            // standard XInterface vtable calls
        case 1: // acquire()
            pCppI->acquireProxy(); // non virtual call!
            eRet = typelib_TypeClass_VOID;
            break;
        case 2: // release()
            pCppI->releaseProxy(); // non virtual call!
            eRet = typelib_TypeClass_VOID;
            break;
        case 0: // queryInterface() opt
        {
            typelib_TypeDescription * pTD = 0;
            TYPELIB_DANGER_GET( &pTD, reinterpret_cast< Type * >( pCallStack[3] )->getTypeLibType() );
            OSL_ASSERT( pTD );

            XInterface * pInterface = 0;
            (*pCppI->pBridge->pCppEnv->getRegisteredInterface)(
                pCppI->pBridge->pCppEnv,
                (void **)&pInterface, pCppI->oid.pData, (typelib_InterfaceTypeDescription *)pTD );

            if (pInterface)
            {
                uno_any_construct( reinterpret_cast< uno_Any * >( pCallStack[1] ),
                                   &pInterface, pTD, cpp_acquire );
                pInterface->release();
                TYPELIB_DANGER_RELEASE( pTD );
                *(void **)pRegisterReturn = pCallStack[1];
                eRet = typelib_TypeClass_ANY;
                break;
            }
            TYPELIB_DANGER_RELEASE( pTD );
        } // else perform queryInterface()
        default:
            eRet = cpp2uno_call(
                pCppI, aMemberDescr.get(),
                ((typelib_InterfaceMethodTypeDescription *)aMemberDescr.get())->pReturnTypeRef,
                ((typelib_InterfaceMethodTypeDescription *)aMemberDescr.get())->nParams,
                ((typelib_InterfaceMethodTypeDescription *)aMemberDescr.get())->pParams,
                pCallStack, pRegisterReturn );
        }
        break;
    }
    default:
    {
        throw RuntimeException( OUString::createFromAscii("no member description found!"), (XInterface *)pCppI );
        // is here for dummy
        eRet = typelib_TypeClass_VOID;
    }
    }

    return eRet;
}


//==================================================================================================
class MediateClassData
{
public:
    struct ClassDataBuffer
    {
        void**          m_pVTable;

        ~ClassDataBuffer();
    };
private:

    map< OUString, ClassDataBuffer* >           m_aClassData;
    Mutex                                       m_aMutex;

    void createVTable( ClassDataBuffer*, typelib_InterfaceTypeDescription* );
public:
    const ClassDataBuffer* getClassData( typelib_InterfaceTypeDescription* );

    MediateClassData() {}
    ~MediateClassData();
};
//__________________________________________________________________________________________________

MediateClassData::ClassDataBuffer::~ClassDataBuffer()
{
    delete m_pVTable;
}

//__________________________________________________________________________________________________
MediateClassData::~MediateClassData()
{
    TRACE( "> calling ~MediateClassData(): freeing mediate vtables... <\n" );

    // this MUST be the absolute last one which is called!
    for ( map< OUString, ClassDataBuffer* >::iterator iPos( m_aClassData.begin() ); iPos != m_aClassData.end(); ++iPos )
    {
        // todo
//          delete (*iPos).second;
    }
}

//__________________________________________________________________________________________________

const MediateClassData::ClassDataBuffer* MediateClassData::getClassData( typelib_InterfaceTypeDescription* pType )
{
    MutexGuard aGuard( m_aMutex );

    map< OUString, ClassDataBuffer* >::iterator element = m_aClassData.find( pType->aBase.pTypeName );
    if( element != m_aClassData.end() )
        return (*element).second;

    ClassDataBuffer* pBuffer = new ClassDataBuffer();
    createVTable( pBuffer, pType );
    m_aClassData[ pType->aBase.pTypeName ] = pBuffer;
    return pBuffer;
}

//==================================================================================================
void cpp_vtable_call( int nTableEntry, void** pCallStack )
{
    cpp_mediate( nTableEntry, pCallStack, (sal_Int64*)(pCallStack - 3) );
}

enum SpecialReturnType { ReturnVoid, ReturnFloat, ReturnDouble, ReturnLong, ReturnLongLong };

//__________________________________________________________________________________________________
void MediateClassData::createVTable( ClassDataBuffer* pBuffer, typelib_InterfaceTypeDescription* pType )
{
    // get all member functions
    list< SpecialReturnType > aSpecialReturn;
    list< sal_Bool > aComplexReturn;

    for( int n = 0; n < pType->nAllMembers; n++ )
    {
        typelib_TypeDescription* pMember = NULL;
        TYPELIB_DANGER_GET( &pMember, pType->ppAllMembers[n] );
        if( pMember->eTypeClass == typelib_TypeClass_INTERFACE_ATTRIBUTE )
        {
            typelib_TypeDescription * pRetTD = 0;
            TYPELIB_DANGER_GET( &pRetTD, ((typelib_InterfaceAttributeTypeDescription *)pMember)->pAttributeTypeRef );
            // get method
            switch( pRetTD->eTypeClass )
            {
                case typelib_TypeClass_FLOAT:
                    aSpecialReturn.push_back( ReturnFloat );
                    break;
                case typelib_TypeClass_DOUBLE:
                    aSpecialReturn.push_back( ReturnDouble );
                    break;
                case typelib_TypeClass_HYPER:
                case typelib_TypeClass_UNSIGNED_HYPER:
                    aSpecialReturn.push_back( ReturnLongLong );
                    break;
                default:
                    aSpecialReturn.push_back( ReturnLong );
                    break;
            }
            aComplexReturn.push_back( !cppu_isSimpleType( pRetTD ) );
                // set method
            if( ! ((typelib_InterfaceAttributeTypeDescription*)pMember)->bReadOnly )
            {
                aSpecialReturn.push_back( ReturnVoid );
                aComplexReturn.push_back( sal_False );
            }
            TYPELIB_DANGER_RELEASE( pRetTD );
        }
        else
        {
            typelib_TypeDescription * pRetTD = 0;
            TYPELIB_DANGER_GET( &pRetTD, ((typelib_InterfaceMethodTypeDescription *)pMember)->pReturnTypeRef );
            switch( pRetTD->eTypeClass )
            {
                case typelib_TypeClass_FLOAT:
                    aSpecialReturn.push_back( ReturnFloat );
                    break;
                case typelib_TypeClass_DOUBLE:
                    aSpecialReturn.push_back( ReturnDouble );
                    break;
                case typelib_TypeClass_HYPER:
                case typelib_TypeClass_UNSIGNED_HYPER:
                    aSpecialReturn.push_back( ReturnLongLong );
                    break;
                case typelib_TypeClass_VOID:
                    aSpecialReturn.push_back( ReturnVoid );
                    break;
                default:
                    aSpecialReturn.push_back( ReturnLong );
                    break;
            }
            aComplexReturn.push_back( !cppu_isSimpleType( pRetTD ) );
            TYPELIB_DANGER_RELEASE( pRetTD );
        }
        TYPELIB_DANGER_RELEASE( pMember );
    }

    const int nSnippetSize = 256;
     int nSize = aSpecialReturn.size();
     char * pSpace = (char *)rtl_allocateMemory( ((nSize+3)*sizeof(void *)) + (nSize * nSnippetSize) );
     pBuffer->m_pVTable = (void**)pSpace;

     char * pCode   = pSpace + ((nSize+3)*sizeof(void *));
     void ** pvft   = (void **)pSpace;
     pvft[0] = NULL; // RTTI
     pvft[1] = NULL; // null
    pvft[2] = NULL; // destructor

     // setup vft and code
     for ( sal_Int32 nPos = 0; nPos < nSize; ++nPos )
     {
         unsigned char * codeSnip =
            (unsigned char*)((unsigned char *)pCode + (nPos*nSnippetSize));
        SpecialReturnType eRet = aSpecialReturn.front();
        aSpecialReturn.pop_front();
        long nTablePos = nPos;
        if( aComplexReturn.front() )
            nTablePos |= 0x80000000;
        aComplexReturn.pop_front();
         pvft[nPos+3] = codeSnip;
        /*generate this code:
         *  pushl %ebp
         *  movl %esp, %ebp
         *  movl %eax, -20(%esp)
         *  movl %ebx, -16(%esp)
         *  movl %ecx, -24(%esp)
         *  movl $nTablePos, %ebx
         *  movl $<return type>, %ecx
         *  jmp privateSnippetExecutor
         */
        *codeSnip++ = 0x55; // pushl %ebp
        *codeSnip++ = 0x8b; // movl %esp, %ebp
        *codeSnip++ = 0xec;
        *codeSnip++ = 0x89; // movl %eax, -16(%ebp)
        *codeSnip++ = 0x45;
        *codeSnip++ = 0xf0;
        *codeSnip++ = 0x89; // movl %ebx, -12(%ebp)
        *codeSnip++ = 0x5d;
        *codeSnip++ = 0xf4;
        *codeSnip++ = 0x89; // movl %ecx, -20(%ebp)
        *codeSnip++ = 0x4d;
        *codeSnip++ = 0xec;

        *codeSnip++ = 0xbb; // movl $nTablePos, %ebx
        *((long*)codeSnip) = nTablePos;
        codeSnip += sizeof(long);
        *codeSnip++ = 0xb9; // movl <return type>, %ecx
        switch( eRet )
        {
            case ReturnFloat:       *((long*)codeSnip) = 0;break;
            case ReturnDouble:      *((long*)codeSnip) = 1;break;
            case ReturnLong:        *((long*)codeSnip) = 3;break;
            case ReturnLongLong:    *((long*)codeSnip) = 2;break;
            case ReturnVoid:
            default:                *((long*)codeSnip) = 4;break;
        }
        codeSnip += sizeof(long);
        *codeSnip++ = 0xe9; // jmp privateSnippetExecutor
        *((long*)codeSnip) = ((unsigned char *)privateSnippetExecutor) - codeSnip - sizeof(long);
        codeSnip += sizeof(long);
     }
}

//==================================================================================================
extern "C" void SAL_CALL cppu_cppInterfaceProxy_patchVtable(
    XInterface * pCppI, typelib_InterfaceTypeDescription * pTypeDescr ) throw ()
{
    static MediateClassData * s_pMediateClassData = 0;
    if (! s_pMediateClassData)
    {
        MutexGuard aGuard( Mutex::getGlobalMutex() );
        if (! s_pMediateClassData)
        {
#ifdef LEAK_STATIC_DATA
            s_pMediateClassData = new MediateClassData();
#else
            static MediateClassData s_aMediateClassData;
            s_pMediateClassData = &s_aMediateClassData;
#endif
        }
    }
    *(const void **)pCppI = s_pMediateClassData->getClassData( pTypeDescr )->m_pVTable + 1;
}

}

//##################################################################################################
extern "C" SAL_DLLEXPORT void SAL_CALL uno_initEnvironment( uno_Environment * pCppEnv ) throw ()
{
    CPPU_CURRENT_NAMESPACE::cppu_cppenv_initEnvironment( pCppEnv );
}
//##################################################################################################
extern "C" SAL_DLLEXPORT void SAL_CALL uno_ext_getMapping(
    uno_Mapping ** ppMapping, uno_Environment * pFrom, uno_Environment * pTo ) throw ()
{
    CPPU_CURRENT_NAMESPACE::cppu_ext_getMapping( ppMapping, pFrom, pTo );
}