/* -*- 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 #include #include #include #include #include "bridge.hxx" #include "cppinterfaceproxy.hxx" #include "types.hxx" #include "vtablefactory.hxx" #include "call.hxx" #include "share.hxx" #include #include using namespace com::sun::star::uno; //#define BRDEBUG #ifdef BRDEBUG #include #include using namespace ::std; using namespace ::osl; using namespace ::rtl; #endif #ifndef ANDROID #include #endif #ifdef ANDROID #include #endif namespace CPPU_CURRENT_NAMESPACE { bool is_complex_struct(const typelib_TypeDescription * type) { const typelib_CompoundTypeDescription * p = reinterpret_cast< const typelib_CompoundTypeDescription * >(type); for (sal_Int32 i = 0; i < p->nMembers; ++i) { if (p->ppTypeRefs[i]->eTypeClass == typelib_TypeClass_STRUCT || p->ppTypeRefs[i]->eTypeClass == typelib_TypeClass_EXCEPTION) { typelib_TypeDescription * t = 0; TYPELIB_DANGER_GET(&t, p->ppTypeRefs[i]); bool b = is_complex_struct(t); TYPELIB_DANGER_RELEASE(t); if (b) { return true; } } else if (!bridges::cpp_uno::shared::isSimpleType(p->ppTypeRefs[i]->eTypeClass)) return true; } if (p->pBaseTypeDescription != 0) return is_complex_struct(&p->pBaseTypeDescription->aBase); return false; } bool return_in_hidden_param( typelib_TypeDescriptionReference *pTypeRef ) { if (bridges::cpp_uno::shared::isSimpleType(pTypeRef)) return false; else if (pTypeRef->eTypeClass == typelib_TypeClass_STRUCT || pTypeRef->eTypeClass == typelib_TypeClass_EXCEPTION) { typelib_TypeDescription * pTypeDescr = 0; TYPELIB_DANGER_GET( &pTypeDescr, pTypeRef ); //A Composite Type not larger than 16 bytes is returned in up to two GPRs bool bRet = pTypeDescr->nSize > 16 || is_complex_struct(pTypeDescr); TYPELIB_DANGER_RELEASE( pTypeDescr ); return bRet; } return true; } } 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 ** gpreg, void ** fpreg, void ** ovrflw, sal_uInt64 * pRegisterReturn /* space for register return */ ) { /* Most MIPS ABIs view the arguments as a struct, of which the first N words go in registers and the rest go on the stack. If I < N, the With word might go in With integer argument register or the With floating-point one. For these ABIs, we only need to remember the number of words passed so far. We are interested only in n64 ABI,so it is the case. */ unsigned int nREG = 0; #ifdef BRDEBUG fprintf(stderr, "cpp2uno_call:begin\n"); #endif // 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_CURRENT_NAMESPACE::return_in_hidden_param( pReturnTypeRef ) ) { pCppReturn = gpreg[nREG]; // complex return via ptr (pCppReturn) nREG++; pUnoReturn = ( bridges::cpp_uno::shared::relatesToInterfaceType( pReturnTypeDescr ) ? alloca( pReturnTypeDescr->nSize ) : pCppReturn); // direct way #ifdef BRDEBUG fprintf(stderr, "cpp2uno_call:complexreturn\n"); #endif } else { pUnoReturn = pRegisterReturn; // direct way for simple types #ifdef BRDEBUG fprintf(stderr, "cpp2uno_call:simplereturn\n"); #endif } } // pop this nREG++; // stack space static_assert(sizeof(void *) == sizeof(sal_Int64), "### 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; #ifdef BRDEBUG fprintf(stderr, "cpp2uno_call:nParams=%d\n", nParams); #endif 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 { #ifdef BRDEBUG fprintf(stderr, "cpp2uno_call:Param %u, type %u\n", nPos, pParamTypeDescr->eTypeClass); #endif switch (pParamTypeDescr->eTypeClass) { case typelib_TypeClass_FLOAT: case typelib_TypeClass_DOUBLE: if (nREG < MAX_FP_REGS) { #ifdef BRDEBUG fprintf(stderr, "cpp2uno_call:fpr=%p\n", fpreg[nREG]); #endif pCppArgs[nPos] = &(fpreg[nREG]); pUnoArgs[nPos] = &(fpreg[nREG]); } else { #ifdef BRDEBUG fprintf(stderr, "cpp2uno_call:fpr=%p\n", ovrflw[nREG - MAX_FP_REGS]); #endif pCppArgs[nPos] = &(ovrflw[nREG - MAX_FP_REGS]); pUnoArgs[nPos] = &(ovrflw[nREG - MAX_FP_REGS]); } nREG++; break; default: if (nREG < MAX_GP_REGS) { #ifdef BRDEBUG fprintf(stderr, "cpp2uno_call:gpr=%p\n", gpreg[nREG]); #endif pCppArgs[nPos] = &(gpreg[nREG]); pUnoArgs[nPos] = &(gpreg[nREG]); } else { #ifdef BRDEBUG fprintf(stderr, "cpp2uno_call:gpr=%p\n", ovrflw[nREG - MAX_GP_REGS]); #endif pCppArgs[nPos] = &(ovrflw[nREG - MAX_GP_REGS]); pUnoArgs[nPos] = &(ovrflw[nREG - MAX_GP_REGS]); } nREG++; break; } // no longer needed TYPELIB_DANGER_RELEASE( pParamTypeDescr ); } else // ptr to complex value | ref { #ifdef BRDEBUG fprintf(stderr,"cpp2uno_call:ptr|ref\n"); #endif void *pCppStack; if (nREG < MAX_GP_REGS) { pCppArgs[nPos] = pCppStack = gpreg[nREG]; } else { pCppArgs[nPos] = pCppStack = ovrflw[nREG - MAX_GP_REGS]; } nREG++; #ifdef BRDEBUG fprintf(stderr, "cpp2uno_call:pCppStack=%p\n", pCppStack); #endif 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 ), pCppStack, pParamTypeDescr, pThis->getBridge()->getCpp2Uno() ); pTempIndices[nTempIndices] = nPos; // has to be reconverted // will be released at reconversion ppTempParamTypeDescr[nTempIndices++] = pParamTypeDescr; #ifdef BRDEBUG fprintf(stderr, "cpp2uno_call:related to interface,%p,%d,pUnoargs[%d]=%p\n", pCppStack, pParamTypeDescr->nSize, nPos, pUnoArgs[nPos]); #endif } else // direct way { pUnoArgs[nPos] = pCppStack; #ifdef BRDEBUG fprintf(stderr, "cpp2uno_call:direct,pUnoArgs[%d]=%p\n", nPos, pUnoArgs[nPos]); #endif // no longer needed TYPELIB_DANGER_RELEASE( pParamTypeDescr ); } } } #ifdef BRDEBUG fprintf(stderr, "cpp2uno_call2,%p,unoargs=%p\n", pThis->getUnoI()->pDispatcher, pUnoArgs); #endif // 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 ); #ifdef BRDEBUG fprintf(stderr, "cpp2uno_call2,after dispatch\n"); #endif // in case an exception occurred... if (pUnoExc) { // destruct temporary in/inout params for ( ; 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::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 for ( ; 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 return reg *(void **)pRegisterReturn = pCppReturn; } if (pReturnTypeDescr) { typelib_TypeClass eRet = (typelib_TypeClass)pReturnTypeDescr->eTypeClass; TYPELIB_DANGER_RELEASE( pReturnTypeDescr ); return eRet; } else return typelib_TypeClass_VOID; } } /** * is called on incoming vtable calls * (called by asm snippets) */ typelib_TypeClass cpp_vtable_call( sal_Int32 nFunctionIndex, sal_Int32 nVtableOffset, void ** gpreg, void ** fpreg, void ** ovrflw, sal_uInt64 * pRegisterReturn /* space for register return */ ) { static_assert( sizeof(sal_Int64)==sizeof(void *), "### unexpected!" ); #ifdef BRDEBUG fprintf(stderr, "in cpp_vtable_call nFunctionIndex is %d\n", nFunctionIndex); fprintf(stderr, "in cpp_vtable_call nVtableOffset is %d\n", nVtableOffset); fprintf(stderr, "in cpp_vtable_call gp=%p, fp=%p, ov=%p\n", gpreg, fpreg, ovrflw); #endif // gpreg: [ret *], this, [other gpr params] // fpreg: [fpr params] // ovrflw: [gpr or fpr params (properly aligned)] void * pThis; if (nFunctionIndex & 0x80000000 ) { nFunctionIndex &= 0x7fffffff; pThis = gpreg[1]; } else { pThis = gpreg[0]; } #ifdef BRDEBUG fprintf(stderr, "cpp_vtable_call, pThis=%p, nFunctionIndex=%d, nVtableOffset=%d\n", pThis, nFunctionIndex, nVtableOffset); #endif pThis = static_cast< char * >(pThis) - nVtableOffset; bridges::cpp_uno::shared::CppInterfaceProxy * pCppI = bridges::cpp_uno::shared::CppInterfaceProxy::castInterfaceToProxy( pThis ); #ifdef BRDEBUG fprintf(stderr, "cpp_vtable_call, pCppI=%p\n", pCppI); #endif typelib_InterfaceTypeDescription * pTypeDescr = pCppI->getTypeDescr(); 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] ); #ifdef BRDEBUG OString cstr( OUStringToOString( aMemberDescr.get()->pTypeName, RTL_TEXTENCODING_ASCII_US ) ); fprintf(stderr, "calling %s, nFunctionIndex=%d\n", cstr.getStr(), nFunctionIndex ); #endif typelib_TypeClass eRet; switch (aMemberDescr.get()->eTypeClass) { case typelib_TypeClass_INTERFACE_ATTRIBUTE: { #ifdef BRDEBUG fprintf(stderr, "cpp_vtable_call interface attribute\n"); #endif typelib_TypeDescriptionReference *pAttrTypeRef = reinterpret_cast( aMemberDescr.get() )->pAttributeTypeRef; if (pTypeDescr->pMapMemberIndexToFunctionIndex[nMemberPos] == nFunctionIndex) { // is GET method eRet = cpp2uno_call( pCppI, aMemberDescr.get(), pAttrTypeRef, 0, 0, // no params gpreg, fpreg, ovrflw, pRegisterReturn ); } else { // is SET method typelib_MethodParameter aParam; aParam.pTypeRef = pAttrTypeRef; aParam.bIn = sal_True; aParam.bOut = sal_False; eRet = cpp2uno_call( pCppI, aMemberDescr.get(), 0, // indicates void return 1, &aParam, gpreg, fpreg, ovrflw, pRegisterReturn ); } break; } case typelib_TypeClass_INTERFACE_METHOD: { #ifdef BRDEBUG fprintf(stderr, "cpp_vtable_call interface method\n"); #endif // is METHOD switch (nFunctionIndex) { case 1: // acquire() #ifdef BRDEBUG fprintf(stderr, "cpp_vtable_call method acquire\n"); #endif pCppI->acquireProxy(); // non virtual call! eRet = typelib_TypeClass_VOID; break; case 2: // release() #ifdef BRDEBUG fprintf(stderr, "cpp_vtable_call method release\n"); #endif pCppI->releaseProxy(); // non virtual call! eRet = typelib_TypeClass_VOID; break; case 0: // queryInterface() opt { #ifdef BRDEBUG fprintf(stderr, "cpp_vtable_call method query interface opt\n"); #endif typelib_TypeDescription * pTD = 0; TYPELIB_DANGER_GET( &pTD, reinterpret_cast< Type * >( gpreg[2] )->getTypeLibType() ); if (pTD) { XInterface * pInterface = 0; (*pCppI->getBridge()->getCppEnv()->getRegisteredInterface) ( pCppI->getBridge()->getCppEnv(), (void **)&pInterface, pCppI->getOid().pData, reinterpret_cast( pTD ) ); if (pInterface) { ::uno_any_construct( reinterpret_cast< uno_Any * >( gpreg[0] ), &pInterface, pTD, cpp_acquire ); pInterface->release(); TYPELIB_DANGER_RELEASE( pTD ); reinterpret_cast( pRegisterReturn )[0] = gpreg[0]; eRet = typelib_TypeClass_ANY; break; } TYPELIB_DANGER_RELEASE( pTD ); } } // else perform queryInterface() default: #ifdef BRDEBUG fprintf(stderr, "cpp_vtable_call method query interface\n"); #endif typelib_InterfaceMethodTypeDescription *pMethodTD = reinterpret_cast( aMemberDescr.get() ); eRet = cpp2uno_call( pCppI, aMemberDescr.get(), pMethodTD->pReturnTypeRef, pMethodTD->nParams, pMethodTD->pParams, gpreg, fpreg, ovrflw, pRegisterReturn ); } break; } default: { #ifdef BRDEBUG fprintf(stderr, "cpp_vtable_call no member\n"); #endif throw RuntimeException( "no member description found!", (XInterface *)pThis ); } } return eRet; } extern "C" void privateSnippetExecutor( ... ); int const codeSnippetSize = 0x44; unsigned char * codeSnippet( unsigned char * code, sal_Int32 functionIndex, sal_Int32 vtableOffset, bool bHasHiddenParam ) { #ifdef BRDEBUG fprintf(stderr,"in codeSnippet functionIndex is %d\n", functionIndex); fprintf(stderr,"in codeSnippet vtableOffset is %d\n", vtableOffset); fflush(stderr); #endif if ( bHasHiddenParam ) functionIndex |= 0x80000000; unsigned int * p = (unsigned int *) code; assert((((unsigned long)code) & 0x3) == 0 ); //aligned to 4 otherwise a mistake /* generate this code */ /* # index 0: 3c020000 lui v0,0x0 4: 34420000 ori v0,v0,0x0 # privateSnippetExecutor 8: 3c0c0000 lui t0,0x0 c: 358c0000 ori t0,t0,0x0 10: 000c6438 dsll t0,t0,0x10 14: 358c0000 ori t0,t0,0x0 18: 000c6438 dsll t0,t0,0x10 1c: 358c0000 ori t0,t0,0x0 # cpp_vtable_call 20: 3c190000 lui t9,0x0 24: 37390000 ori t9,t9,0x0 28: 0019cc38 dsll t9,t9,0x10 2c: 37390000 ori t9,t9,0x0 30: 0019cc38 dsll t9,t9,0x10 34: 37390000 ori t9,t9,0x0 # offset 38: 3c030000 lui v1,0x0 3c: 01800008 jr t0 40: 34630000 ori v1,v1,0x0 */ * p++ = 0x3c020000 | ((functionIndex>>16) & 0x0000ffff); * p++ = 0x34420000 | (functionIndex & 0x0000ffff); * p++ = 0x3c0c0000 | ((((unsigned long)privateSnippetExecutor) >> 48) & 0x0000ffff); * p++ = 0x358c0000 | ((((unsigned long)privateSnippetExecutor) >> 32) & 0x0000ffff); * p++ = 0x000c6438; * p++ = 0x358c0000 | ((((unsigned long)privateSnippetExecutor) >> 16) & 0x0000ffff); * p++ = 0x000c6438; * p++ = 0x358c0000 | (((unsigned long)privateSnippetExecutor) & 0x0000ffff); * p++ = 0x3c190000 | ((((unsigned long)cpp_vtable_call) >> 48) & 0x0000ffff); * p++ = 0x37390000 | ((((unsigned long)cpp_vtable_call) >> 32) & 0x0000ffff); * p++ = 0x0019cc38; * p++ = 0x37390000 | ((((unsigned long)cpp_vtable_call) >> 16) & 0x0000ffff); * p++ = 0x0019cc38; * p++ = 0x37390000 | (((unsigned long)cpp_vtable_call) & 0x0000ffff); * p++ = 0x3c030000 | ((vtableOffset>>16) & 0x0000ffff); * p++ = 0x01800008; * p++ = 0x34630000 | (vtableOffset & 0x0000ffff); return (code + codeSnippetSize); } } void bridges::cpp_uno::shared::VtableFactory::flushCode(unsigned char const *bptr, unsigned char const *eptr) { #ifndef ANDROID (void) bptr; (void) eptr; sysmips(FLUSH_CACHE, 0, 0, 0); #else cacheflush((long) bptr, (long) eptr, 0); #endif } 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; } std::size_t 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, sal_Int32, typelib_InterfaceTypeDescription *) { Slot * slots = mapBlockToVtable(block); slots[-2].fn = 0; //null slots[-1].fn = 0; //destructor return slots + slotCount; } unsigned char * bridges::cpp_uno::shared::VtableFactory::addLocalFunctions( Slot ** slots, unsigned char * code, sal_PtrDiff writetoexecdiff, typelib_InterfaceTypeDescription const * type, sal_Int32 functionOffset, sal_Int32 functionCount, sal_Int32 vtableOffset) { (*slots) -= functionCount; Slot * s = *slots; #ifdef BRDEBUG fprintf(stderr, "in addLocalFunctions functionOffset is %d\n", functionOffset); fprintf(stderr, "in addLocalFunctions vtableOffset is %d\n", vtableOffset); fprintf(stderr, "nMembers=%d\n", type->nMembers); fflush(stderr); #endif for (sal_Int32 i = 0; i < type->nMembers; ++i) { typelib_TypeDescription * member = 0; TYPELIB_DANGER_GET(&member, type->ppMembers[i]); assert(member != 0); switch (member->eTypeClass) { case typelib_TypeClass_INTERFACE_ATTRIBUTE: // Getter: (s++)->fn = code + writetoexecdiff; code = codeSnippet( code, functionOffset++, vtableOffset, CPPU_CURRENT_NAMESPACE::return_in_hidden_param( reinterpret_cast< typelib_InterfaceAttributeTypeDescription * >( member)->pAttributeTypeRef)); // Setter: if (!reinterpret_cast< typelib_InterfaceAttributeTypeDescription * >( member)->bReadOnly) { (s++)->fn = code + writetoexecdiff; code = codeSnippet(code, functionOffset++, vtableOffset, false); } break; case typelib_TypeClass_INTERFACE_METHOD: (s++)->fn = code + writetoexecdiff; code = codeSnippet( code, functionOffset++, vtableOffset, CPPU_CURRENT_NAMESPACE::return_in_hidden_param( reinterpret_cast< typelib_InterfaceMethodTypeDescription * >( member)->pReturnTypeRef)); break; default: assert(false); break; } TYPELIB_DANGER_RELEASE(member); } return code; } /* vim:set shiftwidth=4 softtabstop=4 expandtab: */