/* -*- 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 "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 ** gpreg, void ** fpreg, void ** ovrflw, sal_Int64 * pRegisterReturn /* space for register return */ ) { int ng = 0; //number of gpr registers used #ifndef __NO_FPRS__ int nf = 0; //number of fpr registers used #endif void ** pCppStack; //temporary stack pointer // gpreg: [ret *], this, [gpr params] // fpreg: [fpr params] // ovrflw: [gpr or fpr params (properly aligned)] // 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 **)gpreg; gpreg++; ng++; pUnoReturn = (bridges::cpp_uno::shared::relatesToInterfaceType( pReturnTypeDescr ) ? alloca( pReturnTypeDescr->nSize ) : pCppReturn); // direct way } } // pop this gpreg++; ng++; // 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 { switch (pParamTypeDescr->eTypeClass) { case typelib_TypeClass_DOUBLE: #ifndef __NO_FPRS__ if (nf < 8) { pCppArgs[nPos] = fpreg; pUnoArgs[nPos] = fpreg; nf++; fpreg += 2; #else if (ng & 1) { ng++; gpreg++; } if (ng < 8) { pCppArgs[nPos] = gpreg; pUnoArgs[nPos] = gpreg; ng += 2; gpreg += 2; #endif } else { if (((long)ovrflw) & 4) ovrflw++; pCppArgs[nPos] = ovrflw; pUnoArgs[nPos] = ovrflw; ovrflw += 2; } break; case typelib_TypeClass_FLOAT: // fpreg are all double values so need to // modify fpreg to be a single word float value #ifndef __NO_FPRS__ if (nf < 8) { float tmp = (float) (*((double *)fpreg)); (*((float *) fpreg)) = tmp; pCppArgs[nPos] = fpreg; pUnoArgs[nPos] = fpreg; nf++; fpreg += 2; #else if (ng < 8) { pCppArgs[nPos] = gpreg; pUnoArgs[nPos] = gpreg; ng++; gpreg++; #endif } else { #if 0 /* abi is not being followed correctly */ if (((long)ovrflw) & 4) ovrflw++; float tmp = (float) (*((double *)ovrflw)); (*((float *) ovrflw)) = tmp; pCppArgs[nPos] = ovrflw; pUnoArgs[nPos] = ovrflw; ovrflw += 2; #else pCppArgs[nPos] = ovrflw; pUnoArgs[nPos] = ovrflw; ovrflw += 1; #endif } break; case typelib_TypeClass_HYPER: case typelib_TypeClass_UNSIGNED_HYPER: if (ng & 1) { ng++; gpreg++; } if (ng < 8) { pCppArgs[nPos] = gpreg; pUnoArgs[nPos] = gpreg; ng += 2; gpreg += 2; } else { if (((long)ovrflw) & 4) ovrflw++; pCppArgs[nPos] = ovrflw; pUnoArgs[nPos] = ovrflw; ovrflw += 2; } break; case typelib_TypeClass_BYTE: case typelib_TypeClass_BOOLEAN: if (ng < 8) { pCppArgs[nPos] = (((char *)gpreg) + 3); pUnoArgs[nPos] = (((char *)gpreg) + 3); ng++; gpreg++; } else { pCppArgs[nPos] = (((char *)ovrflw) + 3); pUnoArgs[nPos] = (((char *)ovrflw) + 3); ovrflw++; } break; case typelib_TypeClass_CHAR: case typelib_TypeClass_SHORT: case typelib_TypeClass_UNSIGNED_SHORT: if (ng < 8) { pCppArgs[nPos] = (((char *)gpreg)+ 2); pUnoArgs[nPos] = (((char *)gpreg)+ 2); ng++; gpreg++; } else { pCppArgs[nPos] = (((char *)ovrflw) + 2); pUnoArgs[nPos] = (((char *)ovrflw) + 2); ovrflw++; } break; default: if (ng < 8) { pCppArgs[nPos] = gpreg; pUnoArgs[nPos] = gpreg; ng++; gpreg++; } else { pCppArgs[nPos] = ovrflw; pUnoArgs[nPos] = ovrflw; ovrflw++; } break; } // no longer needed TYPELIB_DANGER_RELEASE( pParamTypeDescr ); } else // ptr to complex value | ref { if (ng < 8) { pCppArgs[nPos] = *(void **)gpreg; pCppStack = gpreg; ng++; gpreg++; } else { pCppArgs[nPos] = *(void **)ovrflw; pCppStack = ovrflw; ovrflw++; } 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 ); } } } // 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 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; } } static typelib_TypeClass cpp_mediate( sal_Int32 nFunctionIndex, sal_Int32 nVtableOffset, void ** gpreg, void ** fpreg, void ** ovrflw, sal_Int64 * pRegisterReturn /* space for register return */ ) { static_assert(sizeof(sal_Int32)==sizeof(void *), "### unexpected!"); // 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]; } pThis = static_cast< char * >(pThis) - nVtableOffset; bridges::cpp_uno::shared::CppInterfaceProxy * pCppI = bridges::cpp_uno::shared::CppInterfaceProxy::castInterfaceToProxy( pThis); 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] ); 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 gpreg, fpreg, ovrflw, 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, gpreg, fpreg, ovrflw, 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 * >( gpreg[2] )->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 * >( gpreg[0] ), &pInterface, pTD, cpp_acquire ); pInterface->release(); TYPELIB_DANGER_RELEASE( pTD ); *(void **)pRegisterReturn = gpreg[0]; 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, gpreg, fpreg, ovrflw, pRegisterReturn ); } break; } default: { throw RuntimeException( "no member description found!", (XInterface *)pThis ); } } return eRet; } /** * is called on incoming vtable calls * (called by asm snippets) */ static void cpp_vtable_call( int nFunctionIndex, int nVtableOffset, void** gpregptr, void** fpregptr, void** ovrflw) { sal_Int32 gpreg[8]; memcpy( gpreg, gpregptr, 32); #ifndef __NO_FPRS__ double fpreg[8]; memcpy( fpreg, fpregptr, 64); #endif volatile long nRegReturn[2]; // fprintf(stderr,"in cpp_vtable_call nFunctionIndex is %x\n",nFunctionIndex); // fprintf(stderr,"in cpp_vtable_call nVtableOffset is %x\n",nVtableOffset); // fflush(stderr); typelib_TypeClass aType = cpp_mediate( nFunctionIndex, nVtableOffset, (void**)gpreg, #ifndef __NO_FPRS__ (void**)fpreg, #else NULL, #endif ovrflw, (sal_Int64*)nRegReturn ); switch( aType ) { // move return value into register space // (will be loaded by machine code snippet) case typelib_TypeClass_BOOLEAN: case typelib_TypeClass_BYTE: __asm__( "lbz 3,%0\n\t" : : "m"(nRegReturn[0]) ); break; case typelib_TypeClass_CHAR: case typelib_TypeClass_SHORT: case typelib_TypeClass_UNSIGNED_SHORT: __asm__( "lhz 3,%0\n\t" : : "m"(nRegReturn[0]) ); break; case typelib_TypeClass_FLOAT: #ifndef __NO_FPRS__ __asm__( "lfs 1,%0\n\t" : : "m" (*((float*)nRegReturn)) ); #else __asm__( "lwz 3,%0\n\t" : : "m"(nRegReturn[0]) ); #endif break; case typelib_TypeClass_DOUBLE: #ifndef __NO_FPRS__ __asm__( "lfd 1,%0\n\t" : : "m" (*((double*)nRegReturn)) ); #else __asm__( "lwz 3,%0\n\t" : : "m"(nRegReturn[0]) ); __asm__( "lwz 4,%0\n\t" : : "m"(nRegReturn[1]) ); #endif break; case typelib_TypeClass_HYPER: case typelib_TypeClass_UNSIGNED_HYPER: __asm__( "lwz 4,%0\n\t" : : "m"(nRegReturn[1]) ); // fall through default: __asm__( "lwz 3,%0\n\t" : : "m"(nRegReturn[0]) ); break; } } int const codeSnippetSize = 108; unsigned char * codeSnippet( unsigned char * code, sal_Int32 functionIndex, sal_Int32 vtableOffset, bool simpleRetType) { // fprintf(stderr,"in codeSnippet functionIndex is %x\n", functionIndex); // fprintf(stderr,"in codeSnippet vtableOffset is %x\n", vtableOffset); // fflush(stderr); if (! simpleRetType ) functionIndex |= 0x80000000; unsigned long * p = (unsigned long *) code; // static_assert( sizeof (long) == 4 ); assert((((unsigned long)code) & 0x3) == 0 ); //aligned to 4 otherwise a mistake /* generate this code */ // # so first save gpr 3 to gpr 10 (aligned to 4) // stw r3,-2048(r1) // stw r4,-2044(r1) // stw r5,-2040(r1) // stw r6,-2036(r1) // stw r7,-2032(r1) // stw r8,-2028(r1) // stw r9,-2024(r1) // stw r10,-2020(r1) // # next save fpr 1 to fpr 8 (aligned to 8) // if dedicated floating point registers are used // stfd f1,-2016(r1) // stfd f2,-2008(r1) // stfd f3,-2000(r1) // stfd f4,-1992(r1) // stfd f5,-1984(r1) // stfd f6,-1976(r1) // stfd f7,-1968(r1) // stfd f8,-1960(r1) // # now here is where cpp_vtable_call must go // lis r3,-8531 // ori r3,r3,48879 // mtctr r3 // # now load up the functionIndex // lis r3,-8531 // ori r3,r3,48879 // # now load up the vtableOffset // lis r4,-8531 // ori r4,r4,48879 // #now load up the pointer to the saved gpr registers // addi r5,r1,-2048 // #now load up the pointer to the saved fpr registers // addi r6,r1,-2016 // if no dedicated floating point registers are used then we have NULL // pointer there // li r6, 0 // #now load up the pointer to the overflow call stack // addi r7,r1,8 // bctr * p++ = 0x9061f800; * p++ = 0x9081f804; * p++ = 0x90a1f808; * p++ = 0x90c1f80c; * p++ = 0x90e1f810; * p++ = 0x9101f814; * p++ = 0x9121f818; * p++ = 0x9141f81c; #ifndef __NO_FPRS__ * p++ = 0xd821f820; * p++ = 0xd841f828; * p++ = 0xd861f830; * p++ = 0xd881f838; * p++ = 0xd8a1f840; * p++ = 0xd8c1f848; * p++ = 0xd8e1f850; * p++ = 0xd901f858; #else /* these nops could be replaced with a smaller codeSnippetSize - 8 * 4 */ * p++ = 0x60000000; * p++ = 0x60000000; * p++ = 0x60000000; * p++ = 0x60000000; * p++ = 0x60000000; * p++ = 0x60000000; * p++ = 0x60000000; * p++ = 0x60000000; #endif * p++ = 0x3c600000 | (((unsigned long)cpp_vtable_call) >> 16); * p++ = 0x60630000 | (((unsigned long)cpp_vtable_call) & 0x0000FFFF); * p++ = 0x7c6903a6; * p++ = 0x3c600000 | (((unsigned long)functionIndex) >> 16); * p++ = 0x60630000 | (((unsigned long)functionIndex) & 0x0000FFFF); * p++ = 0x3c800000 | (((unsigned long)vtableOffset) >> 16); * p++ = 0x60840000 | (((unsigned long)vtableOffset) & 0x0000FFFF); * p++ = 0x38a1f800; #ifndef __NO_FPRS__ * p++ = 0x38c1f820; #else * p++ = 0x38c00000; #endif * p++ = 0x38e10008; * p++ = 0x4e800420; return (code + codeSnippetSize); } } void bridges::cpp_uno::shared::VtableFactory::flushCode(unsigned char const * bptr, unsigned char const * eptr) { int const lineSize = 32; for (unsigned char const * p = bptr; p < eptr + lineSize; p += lineSize) { __asm__ volatile ("dcbst 0, %0" : : "r"(p) : "memory"); } __asm__ volatile ("sync" : : : "memory"); for (unsigned char const * p = bptr; p < eptr + lineSize; p += lineSize) { __asm__ volatile ("icbi 0, %0" : : "r"(p) : "memory"); } __asm__ volatile ("isync" : : : "memory"); } 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; slots[-1].fn = 0; 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; // fprintf(stderr, "in addLocalFunctions functionOffset is %x\n",functionOffset); // fprintf(stderr, "in addLocalFunctions vtableOffset is %x\n",vtableOffset); // fflush(stderr); 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, bridges::cpp_uno::shared::isSimpleType( reinterpret_cast< typelib_InterfaceAttributeTypeDescription * >( member)->pAttributeTypeRef)); // Setter: if (!reinterpret_cast< typelib_InterfaceAttributeTypeDescription * >( member)->bReadOnly) { (s++)->fn = code + writetoexecdiff; code = codeSnippet(code, functionOffset++, vtableOffset, true); } break; case typelib_TypeClass_INTERFACE_METHOD: (s++)->fn = code + writetoexecdiff; code = codeSnippet( code, functionOffset++, vtableOffset, bridges::cpp_uno::shared::isSimpleType( reinterpret_cast< typelib_InterfaceMethodTypeDescription * >( member)->pReturnTypeRef)); break; default: assert(false); break; } TYPELIB_DANGER_RELEASE(member); } return code; } /* vim:set shiftwidth=4 softtabstop=4 expandtab: */