| /************************************************************** |
| * |
| * 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 <stdio.h> |
| |
| // #include <malloc.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 |
| |
| // see the function call convention for IA32 apps on OSX at |
| // http://developer.apple.com/library/mac/#documentation/DeveloperTools/Conceptual/LowLevelABI/130-IA-32_Function_Calling_Conventions/IA32.html |
| // though it mentions that virtual functions may use something different in practice both gcc and clang use the stdcall convention |
| 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" |
| // padding to keep stack 16-byte 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" |
| // push the arguments onto the stack |
| "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" // edx = this |
| "mov 0(%%edx), %%edx\n\t" // edx = vtable |
| "mov %3, %%eax\n\t" |
| "shl $2, %%eax\n\t" |
| "add %%eax, %%edx\n\t" // func** edx = vtable[n] |
| "mov 0(%%edx), %%edx\n\t" // func* edx |
| "call *%%edx\n\t" |
| // save return registers |
| "mov %%eax, %4\n\t" |
| "mov %%edx, %5\n\t" |
| // restore stack |
| "mov %6, %%esp\n\t" |
| : |
| : "m"(nStackLongs), "m"(pStackLongs), "m"(pAdjustedThisPtr), |
| "m"(nVtableIndex), "m"(eax), "m"(edx), "m"(stackptr) |
| : "eax", "ecx", "edx" ); |
| switch( pReturnTypeDescr->eTypeClass ) |
| { |
| case typelib_TypeClass_VOID: |
| break; |
| case typelib_TypeClass_HYPER: |
| case typelib_TypeClass_UNSIGNED_HYPER: |
| ((long*)pRegisterReturn)[1] = edx; |
| // fall through |
| 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 occured... |
| *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 ); |
| } |
| } |
| } |
| |
| } } } |
