diff options
Diffstat (limited to 'bridges/source/cpp_uno/msvc_win32_intel/cpp2uno.cxx')
| -rw-r--r-- | bridges/source/cpp_uno/msvc_win32_intel/cpp2uno.cxx | 488 |
1 files changed, 488 insertions, 0 deletions
diff --git a/bridges/source/cpp_uno/msvc_win32_intel/cpp2uno.cxx b/bridges/source/cpp_uno/msvc_win32_intel/cpp2uno.cxx new file mode 100644 index 000000000..a5e0e5358 --- /dev/null +++ b/bridges/source/cpp_uno/msvc_win32_intel/cpp2uno.cxx @@ -0,0 +1,488 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * 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 . + */ + + +#include <malloc.h> + +#include <com/sun/star/uno/genfunc.hxx> +#include <sal/log.hxx> +#include <uno/data.h> +#include <typelib/typedescription.hxx> + +#include "bridge.hxx" +#include "cppinterfaceproxy.hxx" +#include "types.hxx" +#include "vtablefactory.hxx" + +#include "msci.hxx" + +using namespace ::com::sun::star::uno; + +namespace +{ + +static inline 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, this, [complex return ptr], params + char * pCppStack = (char *)(pCallStack +2); + + // return + typelib_TypeDescription * pReturnTypeDescr = 0; + if (pReturnTypeRef) + { + TYPELIB_DANGER_GET( &pReturnTypeDescr, pReturnTypeRef ); + } + + void * pUnoReturn = nullptr; + void * pCppReturn = nullptr; // 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 + } + } + + // stack space + static_assert(sizeof(void *) == sizeof(sal_Int32), "### unexpected size!"); + // parameters + void ** pUnoArgs = (void **)alloca( 4 * sizeof(void *) * nParams ); + void ** pCppArgs = pUnoArgs + nParams; + // indices of values this have to be converted (interface conversion cpp<=>uno) + sal_Int32 * pTempIndices = (sal_Int32 *)(pUnoArgs + (2 * nParams)); + // type descriptions for reconversions + typelib_TypeDescription ** ppTempParamTypeDescr = (typelib_TypeDescription **)(pUnoArgs + (3 * nParams)); + + sal_Int32 nTempIndices = 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 + break; + default: + break; + } + // 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 ); + pTempIndices[nTempIndices] = nPos; + // will be released at reconversion + ppTempParamTypeDescr[nTempIndices++] = 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() ); + pTempIndices[nTempIndices] = nPos; // has to be reconverted + // will be released at reconversion + ppTempParamTypeDescr[nTempIndices++] = 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->getUnoI()->pDispatcher)( + pThis->getUnoI(), pMemberTypeDescr, pUnoReturn, pUnoArgs, &pUnoExc ); + + // in case an exception occurred... + if (pUnoExc) + { + // destruct temporary in/inout params + while (nTempIndices--) + { + sal_Int32 nIndex = pTempIndices[nTempIndices]; + + if (pParams[nIndex].bIn) // is in/inout => was constructed + { + ::uno_destructData( pUnoArgs[nIndex], ppTempParamTypeDescr[nTempIndices], 0 ); + } + TYPELIB_DANGER_RELEASE( ppTempParamTypeDescr[nTempIndices] ); + } + if (pReturnTypeDescr) + { + TYPELIB_DANGER_RELEASE( pReturnTypeDescr ); + } + + CPPU_CURRENT_NAMESPACE::msci_raiseException( + &aUnoExc, pThis->getBridge()->getUno2Cpp() ); + // has to destruct the any + // is here for dummy + return typelib_TypeClass_VOID; + } + else // else no exception occurred... + { + // temporary params + while (nTempIndices--) + { + sal_Int32 nIndex = pTempIndices[nTempIndices]; + typelib_TypeDescription * pParamTypeDescr = ppTempParamTypeDescr[nTempIndices]; + + 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 __cdecl cpp_mediate( + void ** pCallStack, sal_Int32 nFunctionIndex, sal_Int32 nVtableOffset, + sal_Int64 * pRegisterReturn /* space for register return */ ) +{ + static_assert(sizeof(sal_Int32)==sizeof(void *), "### unexpected!"); + + // pCallStack: ret adr, this, [ret *], params + void * pThis = static_cast< char * >(pCallStack[1]) - nVtableOffset; + bridges::cpp_uno::shared::CppInterfaceProxy * pCppI + = bridges::cpp_uno::shared::CppInterfaceProxy::castInterfaceToProxy( + pThis); + + typelib_InterfaceTypeDescription * pTypeDescr = pCppI->getTypeDescr(); + + SAL_INFO( "bridges.win32", "cpp_vtable_call: pCallStack=[" << + std::hex << pCallStack[0] << "," << pCallStack[1] << "," << pCallStack[2] << ",...]" << + ", pThis=" << pThis << ", pCppI=" << pCppI << + std::dec << ", nFunctionIndex=" << nFunctionIndex << ", nVtableOffset=" << nVtableOffset ); + SAL_INFO( "bridges.win32", "name=" << OUString::unacquired(&pTypeDescr->aBase.pTypeName) ); + + if (nFunctionIndex >= pTypeDescr->nMapFunctionIndexToMemberIndex) + { + SAL_WARN( + "bridges", + "illegal " << OUString::unacquired(&pTypeDescr->aBase.pTypeName) + << " vtable index " << nFunctionIndex << "/" + << pTypeDescr->nMapFunctionIndexToMemberIndex); + throw RuntimeException( + ("illegal " + OUString::unacquired(&pTypeDescr->aBase.pTypeName) + + " vtable index " + OUString::number(nFunctionIndex) + "/" + + OUString::number(pTypeDescr->nMapFunctionIndexToMemberIndex)), + (XInterface *)pThis ); + } + + // determine called method + sal_Int32 nMemberPos = pTypeDescr->pMapFunctionIndexToMemberIndex[nFunctionIndex]; + assert(nMemberPos < pTypeDescr->nAllMembers); + + TypeDescription aMemberDescr( pTypeDescr->ppAllMembers[nMemberPos] ); + + SAL_INFO( "bridges.win32", "Calling " << OUString::unacquired(&aMemberDescr.get()->pTypeName) ); + + typelib_TypeClass eRet = typelib_TypeClass_VOID; + 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) + { + // 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() ); + 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[2] ), + &pInterface, pTD, cpp_acquire ); + pInterface->release(); + TYPELIB_DANGER_RELEASE( pTD ); + *(void **)pRegisterReturn = pCallStack[2]; + 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( "no member description found!", (XInterface *)pThis ); + } + } + + return eRet; +} + +/** + * is called on incoming vtable calls + * (called by asm snippets) + */ +static __declspec(naked) void __cdecl cpp_vtable_call() +{ +__asm + { + sub esp, 8 // space for immediate return type + push esp + push edx // vtable offset + push eax // function index + mov eax, esp + add eax, 20 + push eax // original stack ptr + + call cpp_mediate + add esp, 16 + + cmp eax, typelib_TypeClass_FLOAT + je Lfloat + cmp eax, typelib_TypeClass_DOUBLE + je Ldouble + cmp eax, typelib_TypeClass_HYPER + je Lhyper + cmp eax, typelib_TypeClass_UNSIGNED_HYPER + je Lhyper + // rest is eax + pop eax + add esp, 4 + ret +Lhyper: + pop eax + pop edx + ret +Lfloat: + fld dword ptr [esp] + add esp, 8 + ret +Ldouble: + fld qword ptr [esp] + add esp, 8 + ret + } +} + +int const codeSnippetSize = 16; + +unsigned char * codeSnippet( + unsigned char * code, sal_Int32 functionIndex, sal_Int32 vtableOffset) +{ + unsigned char * p = code; + static_assert(sizeof (sal_Int32) == 4, "boo"); + // mov eax, functionIndex: + *p++ = 0xB8; + *reinterpret_cast< sal_Int32 * >(p) = functionIndex; + p += sizeof (sal_Int32); + // mov edx, vtableOffset: + *p++ = 0xBA; + *reinterpret_cast< sal_Int32 * >(p) = vtableOffset; + p += sizeof (sal_Int32); + // jmp rel32 cpp_vtable_call: + *p++ = 0xE9; + *reinterpret_cast< sal_Int32 * >(p) + = ((unsigned char *) cpp_vtable_call) - p - sizeof (sal_Int32); + p += sizeof (sal_Int32); + 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) + 1; +} + +std::size_t bridges::cpp_uno::shared::VtableFactory::getBlockSize( + sal_Int32 slotCount) +{ + return (slotCount + 1) * sizeof (Slot) + slotCount * codeSnippetSize; +} + +bridges::cpp_uno::shared::VtableFactory::Slot * +bridges::cpp_uno::shared::VtableFactory::initializeBlock( + void * block, sal_Int32 slotCount, sal_Int32, + typelib_InterfaceTypeDescription *) +{ + struct Rtti { + sal_Int32 n0, n1, n2; + type_info * rtti; + Rtti(): + n0(0), n1(0), n2(0), + rtti(CPPU_CURRENT_NAMESPACE::msci_getRTTI( + OUString("com.sun.star.uno.XInterface"))) + {} + }; + static Rtti rtti; + + Slot * slots = mapBlockToVtable(block); + slots[-1].fn = &rtti; + return slots + slotCount; +} + +unsigned char * bridges::cpp_uno::shared::VtableFactory::addLocalFunctions( + Slot ** slots, unsigned char * code, + typelib_InterfaceTypeDescription const *, sal_Int32 functionOffset, + sal_Int32 functionCount, sal_Int32 vtableOffset) +{ + (*slots) -= functionCount; + Slot * s = *slots; + for (sal_Int32 i = 0; i < functionCount; ++i) { + (s++)->fn = code; + code = codeSnippet(code, functionOffset++, vtableOffset); + } + return code; +} + +void bridges::cpp_uno::shared::VtableFactory::flushCode( + unsigned char const *, unsigned char const *) +{} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |