| /************************************************************** |
| * |
| * 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. |
| * |
| *************************************************************/ |
| |
| |
| |
| #include <sal/alloca.h> |
| #include <stdio.h> |
| |
| #include <com/sun/star/uno/genfunc.hxx> |
| #include "com/sun/star/uno/RuntimeException.hpp" |
| #include <uno/data.h> |
| #include <typelib/typedescription.hxx> |
| |
| #include "bridges/cpp_uno/shared/bridge.hxx" |
| #include "bridges/cpp_uno/shared/cppinterfaceproxy.hxx" |
| #include "bridges/cpp_uno/shared/types.hxx" |
| #include "bridges/cpp_uno/shared/vtablefactory.hxx" |
| |
| #include "share.hxx" |
| |
| using namespace ::com::sun::star::uno; |
| |
| namespace |
| { |
| |
| //================================================================================================== |
| static typelib_TypeClass cpp2uno_call( |
| bridges::cpp_uno::shared::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: ret, [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 (bridges::cpp_uno::shared::isSimpleType( pReturnTypeDescr )) |
| { |
| pUnoReturn = pRegisterReturn; // direct way for simple types |
| } |
| else // complex return via ptr (pCppReturn) |
| { |
| pCppReturn = *(void **)pCppStack; |
| pCppStack += sizeof(void *); |
| |
| pUnoReturn = (bridges::cpp_uno::shared::relatesToInterfaceType( |
| pReturnTypeDescr ) |
| ? alloca( pReturnTypeDescr->nSize ) |
| : pCppReturn); // direct way |
| } |
| } |
| // pop this |
| pCppStack += sizeof( void* ); |
| |
| // stack space |
| OSL_ENSURE( 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 |
| && bridges::cpp_uno::shared::isSimpleType( pParamTypeDescr )) |
| // value |
| { |
| pCppArgs[nPos] = pCppStack; |
| 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 (bridges::cpp_uno::shared::relatesToInterfaceType( |
| pParamTypeDescr )) |
| { |
| uno_copyAndConvertData( pUnoArgs[nPos] = alloca( pParamTypeDescr->nSize ), |
| *(void **)pCppStack, pParamTypeDescr, |
| pThis->getBridge()->getCpp2Uno() ); |
| 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 = {0}; // Any will be constructed by callee |
| uno_Any * pUnoExc = &aUnoExc; |
| |
| // invoke uno dispatch call |
| (*pThis->getUnoI()->pDispatcher)( |
| pThis->getUnoI(), pMemberTypeDescr, pUnoReturn, pUnoArgs, &pUnoExc ); |
| #if OSL_DEBUG_LEVEL > 1 |
| if (pUnoExc != NULL) |
| fprintf( stderr, ">cpp2uno_call pUnoExc %x\n", pUnoExc); |
| #endif |
| |
| // in case an 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 ); |
| |
| CPPU_CURRENT_NAMESPACE::raiseException( |
| &aUnoExc, pThis->getBridge()->getUno2Cpp() ); |
| // 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->getBridge()->getUno2Cpp() ); |
| } |
| // 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->getBridge()->getUno2Cpp() ); |
| // 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 typelib_TypeClass cpp_mediate( |
| sal_Int32 nFunctionIndex, |
| sal_Int32 nVtableOffset, |
| void ** pCallStack, |
| sal_Int64 * pRegisterReturn /* space for register return */ ) |
| { |
| OSL_ENSURE( sizeof(sal_Int32)==sizeof(void *), "### unexpected!" ); |
| |
| // pCallStack: ret adr, [ret *], this, params |
| void * pThis; |
| if( nFunctionIndex & 0x80000000 ) |
| { |
| nFunctionIndex &= 0x7fffffff; |
| pThis = pCallStack[2]; |
| } |
| else |
| { |
| pThis = pCallStack[1]; |
| } |
| pThis = static_cast< char * >(pThis) - nVtableOffset; |
| bridges::cpp_uno::shared::CppInterfaceProxy * pCppI |
| = bridges::cpp_uno::shared::CppInterfaceProxy::castInterfaceToProxy( |
| pThis); |
| |
| typelib_InterfaceTypeDescription * pTypeDescr = pCppI->getTypeDescr(); |
| |
| OSL_ENSURE( nFunctionIndex < pTypeDescr->nMapFunctionIndexToMemberIndex, "### illegal vtable index!" ); |
| if (nFunctionIndex >= pTypeDescr->nMapFunctionIndexToMemberIndex) |
| { |
| throw RuntimeException( |
| rtl::OUString::createFromAscii("illegal vtable index!"), |
| (XInterface *)pThis ); |
| } |
| |
| // determine called method |
| sal_Int32 nMemberPos = pTypeDescr->pMapFunctionIndexToMemberIndex[nFunctionIndex]; |
| OSL_ENSURE( 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] == nFunctionIndex) |
| { |
| // 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 (nFunctionIndex) |
| { |
| 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() ); |
| if (pTD) |
| { |
| XInterface * pInterface = 0; |
| (*pCppI->getBridge()->getCppEnv()->getRegisteredInterface)( |
| pCppI->getBridge()->getCppEnv(), |
| (void **)&pInterface, pCppI->getOid().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( |
| rtl::OUString::createFromAscii("no member description found!"), |
| (XInterface *)pThis ); |
| // is here for dummy |
| eRet = typelib_TypeClass_VOID; |
| } |
| } |
| |
| return eRet; |
| } |
| |
| //================================================================================================== |
| /** |
| * is called on incoming vtable calls |
| * (called by asm snippets) |
| */ |
| static void cpp_vtable_call( |
| int nFunctionIndex, int nVtableOffset, void** pCallStack ) |
| __attribute__((regparm(3))); |
| |
| void cpp_vtable_call( int nFunctionIndex, int nVtableOffset, void** pCallStack ) |
| { |
| volatile long nRegReturn[2]; |
| typelib_TypeClass aType = cpp_mediate( |
| nFunctionIndex, nVtableOffset, pCallStack, (sal_Int64*)nRegReturn ); |
| |
| switch( aType ) |
| { |
| case typelib_TypeClass_HYPER: |
| case typelib_TypeClass_UNSIGNED_HYPER: |
| __asm__( "movl %1, %%edx\n\t" |
| "movl %0, %%eax\n" |
| : : "m"(nRegReturn[0]), "m"(nRegReturn[1]) ); |
| break; |
| case typelib_TypeClass_FLOAT: |
| __asm__( "flds %0\n\t" |
| "fstp %%st(0)\n\t" |
| "flds %0\n" |
| : : "m"(*(float *)nRegReturn) ); |
| break; |
| case typelib_TypeClass_DOUBLE: |
| __asm__( "fldl %0\n\t" |
| "fstp %%st(0)\n\t" |
| "fldl %0\n" |
| : : "m"(*(double *)nRegReturn) ); |
| break; |
| // case typelib_TypeClass_UNSIGNED_SHORT: |
| // case typelib_TypeClass_SHORT: |
| // __asm__( "movswl %0, %%eax\n" |
| // : : "m"(nRegReturn) ); |
| // break; |
| default: |
| __asm__( "movl %0, %%eax\n" |
| : : "m"(nRegReturn[0]) ); |
| break; |
| } |
| } |
| |
| |
| //================================================================================================== |
| int const codeSnippetSize = 20; |
| |
| unsigned char * codeSnippet( |
| unsigned char * code, sal_Int32 functionIndex, sal_Int32 vtableOffset, |
| bool simpleRetType) |
| { |
| if (!simpleRetType) { |
| functionIndex |= 0x80000000; |
| } |
| unsigned char * p = code; |
| OSL_ASSERT(sizeof (sal_Int32) == 4); |
| // mov function_index, %eax: |
| *p++ = 0xB8; |
| *reinterpret_cast< sal_Int32 * >(p) = functionIndex; |
| p += sizeof (sal_Int32); |
| // mov vtable_offset, %edx: |
| *p++ = 0xBA; |
| *reinterpret_cast< sal_Int32 * >(p) = vtableOffset; |
| p += sizeof (sal_Int32); |
| // mov %esp, %ecx: |
| *p++ = 0x89; |
| *p++ = 0xE1; |
| // jmp cpp_vtable_call: |
| *p++ = 0xE9; |
| *reinterpret_cast< sal_Int32 * >(p) |
| = ((unsigned char *) cpp_vtable_call) - p - sizeof (sal_Int32); |
| p += sizeof (sal_Int32); |
| OSL_ASSERT(p - code <= codeSnippetSize); |
| return code + codeSnippetSize; |
| } |
| |
| } |
| |
| struct bridges::cpp_uno::shared::VtableFactory::Slot { void * fn; }; |
| |
| bridges::cpp_uno::shared::VtableFactory::Slot * |
| bridges::cpp_uno::shared::VtableFactory::mapBlockToVtable(void * block) |
| { |
| return static_cast< Slot * >(block) + 2; |
| } |
| |
| sal_Size bridges::cpp_uno::shared::VtableFactory::getBlockSize( |
| sal_Int32 slotCount) |
| { |
| return (slotCount + 2) * sizeof (Slot) + slotCount * codeSnippetSize; |
| } |
| |
| bridges::cpp_uno::shared::VtableFactory::Slot * |
| bridges::cpp_uno::shared::VtableFactory::initializeBlock( |
| void * block, sal_Int32 slotCount) |
| { |
| Slot * slots = mapBlockToVtable(block); |
| slots[-2].fn = 0; |
| slots[-1].fn = 0; |
| return slots + slotCount; |
| } |
| |
| unsigned char * bridges::cpp_uno::shared::VtableFactory::addLocalFunctions( |
| Slot ** slots, unsigned char * code, |
| typelib_InterfaceTypeDescription const * type, sal_Int32 functionOffset, |
| sal_Int32 functionCount, sal_Int32 vtableOffset) |
| { |
| (*slots) -= functionCount; |
| Slot * s = *slots; |
| for (sal_Int32 i = 0; i < type->nMembers; ++i) { |
| typelib_TypeDescription * member = 0; |
| TYPELIB_DANGER_GET(&member, type->ppMembers[i]); |
| OSL_ASSERT(member != 0); |
| switch (member->eTypeClass) { |
| case typelib_TypeClass_INTERFACE_ATTRIBUTE: |
| // Getter: |
| (s++)->fn = code; |
| code = codeSnippet( |
| code, functionOffset++, vtableOffset, |
| bridges::cpp_uno::shared::isSimpleType( |
| reinterpret_cast< |
| typelib_InterfaceAttributeTypeDescription * >( |
| member)->pAttributeTypeRef)); |
| // Setter: |
| if (!reinterpret_cast< |
| typelib_InterfaceAttributeTypeDescription * >( |
| member)->bReadOnly) |
| { |
| (s++)->fn = code; |
| code = codeSnippet(code, functionOffset++, vtableOffset, true); |
| } |
| break; |
| |
| case typelib_TypeClass_INTERFACE_METHOD: |
| (s++)->fn = code; |
| code = codeSnippet( |
| code, functionOffset++, vtableOffset, |
| bridges::cpp_uno::shared::isSimpleType( |
| reinterpret_cast< |
| typelib_InterfaceMethodTypeDescription * >( |
| member)->pReturnTypeRef)); |
| break; |
| |
| default: |
| OSL_ASSERT(false); |
| break; |
| } |
| TYPELIB_DANGER_RELEASE(member); |
| } |
| return code; |
| } |
| |
| void bridges::cpp_uno::shared::VtableFactory::flushCode( |
| unsigned char const *, unsigned char const *) |
| {} |
