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|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org 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 version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_bridges.hxx"
#include <stdio.h>
#include <com/sun/star/uno/genfunc.hxx>
#include "com/sun/star/uno/RuntimeException.hpp"
#include <uno/data.h>
#include "bridges/cpp_uno/shared/bridge.hxx"
#include "bridges/cpp_uno/shared/types.hxx"
#include "bridges/cpp_uno/shared/unointerfaceproxy.hxx"
#include "bridges/cpp_uno/shared/vtables.hxx"
#include "share.hxx"
using namespace ::rtl;
using namespace ::com::sun::star::uno;
namespace
{
//==================================================================================================
// The call instruction within the asm section of callVirtualMethod may throw
// exceptions. So that the compiler handles this correctly, it is important
// that (a) callVirtualMethod might call dummy_can_throw_anything (although this
// never happens at runtime), which in turn can throw exceptions, and (b)
// callVirtualMethod is not inlined at its call site (so that any exceptions are
// caught which are thrown from the instruction calling callVirtualMethod):
void callVirtualMethod(
void * pAdjustedThisPtr,
sal_Int32 nVtableIndex,
void * pRegisterReturn,
typelib_TypeDescription * pReturnTypeDescr, bool bSimpleReturn,
sal_Int32 * pStackLongs,
sal_Int32 nStackLongs ) __attribute__((noinline));
void callVirtualMethod(
void * pAdjustedThisPtr,
sal_Int32 nVtableIndex,
void * pRegisterReturn,
typelib_TypeDescription * pReturnTypeDescr, bool bSimpleReturn,
sal_Int32 * pStackLongs,
sal_Int32 nStackLongs )
{
// parameter list is mixed list of * and values
// reference parameters are pointers
OSL_ENSURE( pStackLongs && pAdjustedThisPtr, "### null ptr!" );
OSL_ENSURE( (sizeof(void *) == 4) && (sizeof(sal_Int32) == 4), "### unexpected size of int!" );
OSL_ENSURE( nStackLongs && pStackLongs, "### no stack in callVirtualMethod !" );
// never called
if (! pAdjustedThisPtr) CPPU_CURRENT_NAMESPACE::dummy_can_throw_anything("xxx"); // address something
volatile long edx = 0, eax = 0; // for register returns
void * stackptr;
asm volatile (
"mov %%esp, %6\n\t"
"mov %0, %%eax\n\t"
"mov %%eax, %%edx\n\t"
// stack padding to keep stack aligned:
"shl $2, %%eax\n\t"
"neg %%eax\n\t"
"add %%esp, %%eax\n\t"
"and $0xf, %%eax\n\t"
"sub %%eax, %%esp\n\t"
// copy:
"mov %%edx, %%eax\n\t"
"dec %%edx\n\t"
"shl $2, %%edx\n\t"
"add %1, %%edx\n"
"Lcopy:\n\t"
"pushl 0(%%edx)\n\t"
"sub $4, %%edx\n\t"
"dec %%eax\n\t"
"jne Lcopy\n\t"
// do the actual call
"mov %2, %%edx\n\t"
"mov 0(%%edx), %%edx\n\t"
"mov %3, %%eax\n\t"
"shl $2, %%eax\n\t"
"add %%eax, %%edx\n\t"
"mov 0(%%edx), %%edx\n\t"
"call *%%edx\n\t"
// save return registers
"mov %%eax, %4\n\t"
"mov %%edx, %5\n\t"
// cleanup stack
"mov %6, %%esp\n\t"
:
: "m"(nStackLongs), "m"(pStackLongs), "m"(pAdjustedThisPtr),
"m"(nVtableIndex), "m"(eax), "m"(edx), "m"(stackptr)
: "eax", "edx" );
switch( pReturnTypeDescr->eTypeClass )
{
case typelib_TypeClass_VOID:
break;
case typelib_TypeClass_HYPER:
case typelib_TypeClass_UNSIGNED_HYPER:
((long*)pRegisterReturn)[1] = edx;
case typelib_TypeClass_LONG:
case typelib_TypeClass_UNSIGNED_LONG:
case typelib_TypeClass_CHAR:
case typelib_TypeClass_ENUM:
((long*)pRegisterReturn)[0] = eax;
break;
case typelib_TypeClass_SHORT:
case typelib_TypeClass_UNSIGNED_SHORT:
*(unsigned short*)pRegisterReturn = eax;
break;
case typelib_TypeClass_BOOLEAN:
case typelib_TypeClass_BYTE:
*(unsigned char*)pRegisterReturn = eax;
break;
case typelib_TypeClass_FLOAT:
asm ( "fstps %0" : : "m"(*(char *)pRegisterReturn) );
break;
case typelib_TypeClass_DOUBLE:
asm ( "fstpl %0\n\t" : : "m"(*(char *)pRegisterReturn) );
break;
default: {
sal_Int32 const nRetSize = pReturnTypeDescr->nSize;
if (bSimpleReturn && nRetSize <= 8 && nRetSize > 0) {
if (nRetSize > 4)
static_cast<long *>(pRegisterReturn)[1] = edx;
static_cast<long *>(pRegisterReturn)[0] = eax;
}
break;
}
}
}
//==================================================================================================
static void cpp_call(
bridges::cpp_uno::shared::UnoInterfaceProxy * pThis,
bridges::cpp_uno::shared::VtableSlot aVtableSlot,
typelib_TypeDescriptionReference * pReturnTypeRef,
sal_Int32 nParams, typelib_MethodParameter * pParams,
void * pUnoReturn, void * pUnoArgs[], uno_Any ** ppUnoExc )
{
// max space for: [complex ret ptr], values|ptr ...
char * pCppStack =
(char *)alloca( sizeof(sal_Int32) + ((nParams+2) * sizeof(sal_Int64)) );
char * pCppStackStart = pCppStack;
// return
typelib_TypeDescription * pReturnTypeDescr = 0;
TYPELIB_DANGER_GET( &pReturnTypeDescr, pReturnTypeRef );
OSL_ENSURE( pReturnTypeDescr, "### expected return type description!" );
void * pCppReturn = 0; // if != 0 && != pUnoReturn, needs reconversion
bool bSimpleReturn = true;
if (pReturnTypeDescr)
{
bSimpleReturn = CPPU_CURRENT_NAMESPACE::isSimpleReturnType(
pReturnTypeDescr);
if (bSimpleReturn)
{
pCppReturn = pUnoReturn; // direct way for simple types
}
else
{
pCppReturn = (bridges::cpp_uno::shared::relatesToInterfaceType(
pReturnTypeDescr )
? alloca( pReturnTypeDescr->nSize )
: pUnoReturn); // direct way
// complex return via ptr
*(void **)pCppStack = pCppReturn;
pCppStack += sizeof(void *);
}
}
// push this
void * pAdjustedThisPtr = reinterpret_cast< void ** >(pThis->getCppI())
+ aVtableSlot.offset;
*(void**)pCppStack = pAdjustedThisPtr;
pCppStack += sizeof( void* );
// stack space
OSL_ENSURE( sizeof(void *) == sizeof(sal_Int32), "### unexpected size!" );
// args
void ** pCppArgs = (void **)alloca( 3 * sizeof(void *) * nParams );
// indizes of values this have to be converted (interface conversion cpp<=>uno)
sal_Int32 * pTempIndizes = (sal_Int32 *)(pCppArgs + nParams);
// type descriptions for reconversions
typelib_TypeDescription ** ppTempParamTypeDescr = (typelib_TypeDescription **)(pCppArgs + (2 * 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
&& bridges::cpp_uno::shared::isSimpleType( pParamTypeDescr ))
{
uno_copyAndConvertData( pCppArgs[nPos] = pCppStack, pUnoArgs[nPos], pParamTypeDescr,
pThis->getBridge()->getUno2Cpp() );
switch (pParamTypeDescr->eTypeClass)
{
case typelib_TypeClass_HYPER:
case typelib_TypeClass_UNSIGNED_HYPER:
case typelib_TypeClass_DOUBLE:
pCppStack += sizeof(sal_Int32); // extra long
default:
break;
}
// no longer needed
TYPELIB_DANGER_RELEASE( pParamTypeDescr );
}
else // ptr to complex value | ref
{
if (! rParam.bIn) // is pure out
{
// cpp out is constructed mem, uno out is not!
uno_constructData(
*(void **)pCppStack = pCppArgs[nPos] = alloca( pParamTypeDescr->nSize ),
pParamTypeDescr );
pTempIndizes[nTempIndizes] = nPos; // default constructed for cpp call
// will be released at reconversion
ppTempParamTypeDescr[nTempIndizes++] = pParamTypeDescr;
}
// is in/inout
else if (bridges::cpp_uno::shared::relatesToInterfaceType(
pParamTypeDescr ))
{
uno_copyAndConvertData(
*(void **)pCppStack = pCppArgs[nPos] = alloca( pParamTypeDescr->nSize ),
pUnoArgs[nPos], pParamTypeDescr,
pThis->getBridge()->getUno2Cpp() );
pTempIndizes[nTempIndizes] = nPos; // has to be reconverted
// will be released at reconversion
ppTempParamTypeDescr[nTempIndizes++] = pParamTypeDescr;
}
else // direct way
{
*(void **)pCppStack = pCppArgs[nPos] = pUnoArgs[nPos];
// no longer needed
TYPELIB_DANGER_RELEASE( pParamTypeDescr );
}
}
pCppStack += sizeof(sal_Int32); // standard parameter length
}
try
{
OSL_ENSURE( !( (pCppStack - pCppStackStart ) & 3), "UNALIGNED STACK !!! (Please DO panic)" );
callVirtualMethod(
pAdjustedThisPtr, aVtableSlot.index,
pCppReturn, pReturnTypeDescr, bSimpleReturn,
(sal_Int32 *)pCppStackStart, (pCppStack - pCppStackStart) / sizeof(sal_Int32) );
// NO exception occurred...
*ppUnoExc = 0;
// reconvert temporary params
for ( ; nTempIndizes--; )
{
sal_Int32 nIndex = pTempIndizes[nTempIndizes];
typelib_TypeDescription * pParamTypeDescr = ppTempParamTypeDescr[nTempIndizes];
if (pParams[nIndex].bIn)
{
if (pParams[nIndex].bOut) // inout
{
uno_destructData( pUnoArgs[nIndex], pParamTypeDescr, 0 ); // destroy uno value
uno_copyAndConvertData( pUnoArgs[nIndex], pCppArgs[nIndex], pParamTypeDescr,
pThis->getBridge()->getCpp2Uno() );
}
}
else // pure out
{
uno_copyAndConvertData( pUnoArgs[nIndex], pCppArgs[nIndex], pParamTypeDescr,
pThis->getBridge()->getCpp2Uno() );
}
// destroy temp cpp param => cpp: every param was constructed
uno_destructData( pCppArgs[nIndex], pParamTypeDescr, cpp_release );
TYPELIB_DANGER_RELEASE( pParamTypeDescr );
}
// return value
if (pCppReturn && pUnoReturn != pCppReturn)
{
uno_copyAndConvertData( pUnoReturn, pCppReturn, pReturnTypeDescr,
pThis->getBridge()->getCpp2Uno() );
uno_destructData( pCppReturn, pReturnTypeDescr, cpp_release );
}
}
catch (...)
{
#if OSL_DEBUG_LEVEL > 1
fprintf( stderr, "caught C++ exception\n" );
#endif
// fill uno exception
fillUnoException( CPPU_CURRENT_NAMESPACE::__cxa_get_globals()->caughtExceptions, *ppUnoExc, pThis->getBridge()->getCpp2Uno() );
// temporary params
for ( ; nTempIndizes--; )
{
sal_Int32 nIndex = pTempIndizes[nTempIndizes];
// destroy temp cpp param => cpp: every param was constructed
uno_destructData( pCppArgs[nIndex], ppTempParamTypeDescr[nTempIndizes], cpp_release );
TYPELIB_DANGER_RELEASE( ppTempParamTypeDescr[nTempIndizes] );
}
// return type
if (pReturnTypeDescr)
TYPELIB_DANGER_RELEASE( pReturnTypeDescr );
}
}
}
namespace CPPU_CURRENT_NAMESPACE {
bool isSimpleReturnType(typelib_TypeDescription * pTD, bool recursive)
{
if (bridges::cpp_uno::shared::isSimpleType( pTD ))
return true;
// Only structs of exactly 1, 2, 4, or 8 bytes are returned through
// registers, see <http://developer.apple.com/documentation/DeveloperTools/
// Conceptual/LowLevelABI/Articles/IA32.html>:
if (pTD->eTypeClass == typelib_TypeClass_STRUCT &&
(recursive || pTD->nSize <= 2 || pTD->nSize == 4 || pTD->nSize == 8))
{
typelib_CompoundTypeDescription *const pCompTD =
(typelib_CompoundTypeDescription *) pTD;
for ( sal_Int32 pos = pCompTD->nMembers; pos--; ) {
typelib_TypeDescription * pMemberTD = 0;
TYPELIB_DANGER_GET( &pMemberTD, pCompTD->ppTypeRefs[pos] );
bool const b = isSimpleReturnType(pMemberTD, true);
TYPELIB_DANGER_RELEASE( pMemberTD );
if (! b)
return false;
}
return true;
}
return false;
}
}
//==================================================================================================
namespace bridges { namespace cpp_uno { namespace shared {
void unoInterfaceProxyDispatch(
uno_Interface * pUnoI, const typelib_TypeDescription * pMemberDescr,
void * pReturn, void * pArgs[], uno_Any ** ppException )
{
// is my surrogate
bridges::cpp_uno::shared::UnoInterfaceProxy * pThis
= static_cast< bridges::cpp_uno::shared::UnoInterfaceProxy * >(pUnoI);
switch (pMemberDescr->eTypeClass)
{
case typelib_TypeClass_INTERFACE_ATTRIBUTE:
{
VtableSlot aVtableSlot(
getVtableSlot(
reinterpret_cast<
typelib_InterfaceAttributeTypeDescription const * >(
pMemberDescr)));
if (pReturn)
{
// dependent dispatch
cpp_call(
pThis, aVtableSlot,
((typelib_InterfaceAttributeTypeDescription *)pMemberDescr)->pAttributeTypeRef,
0, 0, // no params
pReturn, pArgs, ppException );
}
else
{
// is SET
typelib_MethodParameter aParam;
aParam.pTypeRef =
((typelib_InterfaceAttributeTypeDescription *)pMemberDescr)->pAttributeTypeRef;
aParam.bIn = sal_True;
aParam.bOut = sal_False;
typelib_TypeDescriptionReference * pReturnTypeRef = 0;
OUString aVoidName( RTL_CONSTASCII_USTRINGPARAM("void") );
typelib_typedescriptionreference_new(
&pReturnTypeRef, typelib_TypeClass_VOID, aVoidName.pData );
// dependent dispatch
aVtableSlot.index += 1; // get, then set method
cpp_call(
pThis, aVtableSlot,
pReturnTypeRef,
1, &aParam,
pReturn, pArgs, ppException );
typelib_typedescriptionreference_release( pReturnTypeRef );
}
break;
}
case typelib_TypeClass_INTERFACE_METHOD:
{
VtableSlot aVtableSlot(
getVtableSlot(
reinterpret_cast<
typelib_InterfaceMethodTypeDescription const * >(
pMemberDescr)));
switch (aVtableSlot.index)
{
// standard calls
case 1: // acquire uno interface
(*pUnoI->acquire)( pUnoI );
*ppException = 0;
break;
case 2: // release uno interface
(*pUnoI->release)( pUnoI );
*ppException = 0;
break;
case 0: // queryInterface() opt
{
typelib_TypeDescription * pTD = 0;
TYPELIB_DANGER_GET( &pTD, reinterpret_cast< Type * >( pArgs[0] )->getTypeLibType() );
if (pTD)
{
uno_Interface * pInterface = 0;
(*pThis->pBridge->getUnoEnv()->getRegisteredInterface)(
pThis->pBridge->getUnoEnv(),
(void **)&pInterface, pThis->oid.pData, (typelib_InterfaceTypeDescription *)pTD );
if (pInterface)
{
::uno_any_construct(
reinterpret_cast< uno_Any * >( pReturn ),
&pInterface, pTD, 0 );
(*pInterface->release)( pInterface );
TYPELIB_DANGER_RELEASE( pTD );
*ppException = 0;
break;
}
TYPELIB_DANGER_RELEASE( pTD );
}
} // else perform queryInterface()
default:
// dependent dispatch
cpp_call(
pThis, aVtableSlot,
((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->pReturnTypeRef,
((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->nParams,
((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->pParams,
pReturn, pArgs, ppException );
}
break;
}
default:
{
::com::sun::star::uno::RuntimeException aExc(
OUString( RTL_CONSTASCII_USTRINGPARAM("illegal member type description!") ),
::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface >() );
Type const & rExcType = ::getCppuType( &aExc );
// binary identical null reference
::uno_type_any_construct( *ppException, &aExc, rExcType.getTypeLibType(), 0 );
}
}
}
} } }
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|