diff options
Diffstat (limited to 'bridges/source/cpp_uno/gcc3_linux_x86-64/cpp2uno.cxx')
| -rw-r--r-- | bridges/source/cpp_uno/gcc3_linux_x86-64/cpp2uno.cxx | 522 |
1 files changed, 522 insertions, 0 deletions
diff --git a/bridges/source/cpp_uno/gcc3_linux_x86-64/cpp2uno.cxx b/bridges/source/cpp_uno/gcc3_linux_x86-64/cpp2uno.cxx new file mode 100644 index 000000000..29212988f --- /dev/null +++ b/bridges/source/cpp_uno/gcc3_linux_x86-64/cpp2uno.cxx @@ -0,0 +1,522 @@ +/* -*- 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 <stdio.h> +#include <stdlib.h> + +#include <rtl/alloc.h> +#include <sal/log.hxx> + +#include <com/sun/star/uno/genfunc.hxx> +#include <com/sun/star/uno/RuntimeException.hpp> +#include <config_options.h> +#include <uno/data.h> +#include <typelib/typedescription.hxx> + +#include <bridge.hxx> +#include <cppinterfaceproxy.hxx> +#include <types.hxx> +#include <vtablefactory.hxx> + +#include "abi.hxx" +#include "call.hxx" +#include "rtti.hxx" +#include "share.hxx" + +using namespace ::com::sun::star::uno; + +// Perform the UNO call +// +// We must convert the parameters stored in gpreg, fpreg and ovrflw to UNO +// arguments and call pThis->getUnoI()->pDispatcher. +// +// gpreg: [ret *], this, [gpr params] +// fpreg: [fpr params] +// ovrflw: [gpr or fpr params (properly aligned)] +// +// [ret *] is present when we are returning a structure bigger than 16 bytes +// Simple types are returned in rax, rdx (int), or xmm0, xmm1 (fp). +// Similarly structures <= 16 bytes are in rax, rdx, xmm0, xmm1 as necessary. +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 */ ) +{ + unsigned int nr_gpr = 0; //number of gpr registers used + unsigned int nr_fpr = 0; //number of fpr registers used + + // return + typelib_TypeDescription * pReturnTypeDescr = nullptr; + if (pReturnTypeRef) + TYPELIB_DANGER_GET( &pReturnTypeDescr, pReturnTypeRef ); + + void * pUnoReturn = nullptr; + void * pCppReturn = nullptr; // complex return ptr: if != 0 && != pUnoReturn, reconversion need + + if ( pReturnTypeDescr ) + { + if ( x86_64::return_in_hidden_param( pReturnTypeRef ) ) + { + pCppReturn = *gpreg++; + nr_gpr++; + + pUnoReturn = ( bridges::cpp_uno::shared::relatesToInterfaceType( pReturnTypeDescr ) + ? alloca( pReturnTypeDescr->nSize ) + : pCppReturn ); // direct way + } + else + pUnoReturn = pRegisterReturn; // direct way for simple types + } + + // pop this + gpreg++; + nr_gpr++; + + // stack space + // parameters + void ** pUnoArgs = static_cast<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 = reinterpret_cast<sal_Int32 *>(pUnoArgs + (2 * nParams)); + // type descriptions for reconversions + typelib_TypeDescription ** ppTempParamTypeDescr = reinterpret_cast<typelib_TypeDescription **>(pUnoArgs + (3 * nParams)); + + sal_Int32 nTempIndices = 0; + + for ( sal_Int32 nPos = 0; nPos < nParams; ++nPos ) + { + const typelib_MethodParameter & rParam = pParams[nPos]; + + int nUsedGPR = 0; + int nUsedSSE = 0; + bool bFitsRegisters = x86_64::examine_argument( rParam.pTypeRef, false, nUsedGPR, nUsedSSE ); + if ( !rParam.bOut && bridges::cpp_uno::shared::isSimpleType( rParam.pTypeRef ) ) // value + { + // Simple types must fit exactly one register on x86_64 + assert( bFitsRegisters && ( ( nUsedSSE == 1 && nUsedGPR == 0 ) || ( nUsedSSE == 0 && nUsedGPR == 1 ) ) ); (void)bFitsRegisters; + + if ( nUsedSSE == 1 ) + { + if ( nr_fpr < x86_64::MAX_SSE_REGS ) + { + pCppArgs[nPos] = pUnoArgs[nPos] = fpreg++; + nr_fpr++; + } + else + pCppArgs[nPos] = pUnoArgs[nPos] = ovrflw++; + } + else if ( nUsedGPR == 1 ) + { + if ( nr_gpr < x86_64::MAX_GPR_REGS ) + { + pCppArgs[nPos] = pUnoArgs[nPos] = gpreg++; + nr_gpr++; + } + else + pCppArgs[nPos] = pUnoArgs[nPos] = ovrflw++; + } + } + else // struct <= 16 bytes || ptr to complex value || ref + { + typelib_TypeDescription * pParamTypeDescr = nullptr; + TYPELIB_DANGER_GET( &pParamTypeDescr, rParam.pTypeRef ); + + void *pCppStack; + if ( nr_gpr < x86_64::MAX_GPR_REGS ) + { + pCppArgs[nPos] = pCppStack = *gpreg++; + nr_gpr++; + } + else + pCppArgs[nPos] = pCppStack = *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; + } + else if ( bridges::cpp_uno::shared::relatesToInterfaceType( pParamTypeDescr ) ) // is in/inout + { + pUnoArgs[nPos] = alloca( pParamTypeDescr->nSize ); + uno_copyAndConvertData( pUnoArgs[nPos], + 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] = 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], nullptr ); + 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, nullptr ); + + 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, nullptr ); + } + // complex return ptr is set to return reg + *reinterpret_cast<void **>(pRegisterReturn) = pCppReturn; + } + if ( pReturnTypeDescr ) + { + typelib_TypeClass eRet = pReturnTypeDescr->eTypeClass; + TYPELIB_DANGER_RELEASE( pReturnTypeDescr ); + return eRet; + } + else + return typelib_TypeClass_VOID; + } +} + + +typelib_TypeClass cpp_vtable_call( + sal_Int32 nFunctionIndex, sal_Int32 nVtableOffset, + void ** gpreg, void ** fpreg, void ** ovrflw, + sal_uInt64 * pRegisterReturn /* space for register return */ ) +{ + // 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)), + reinterpret_cast<XInterface *>( pCppI ) ); + } + + // 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: + { + typelib_TypeDescriptionReference *pAttrTypeRef = + reinterpret_cast<typelib_InterfaceAttributeTypeDescription *>( aMemberDescr.get() )->pAttributeTypeRef; + + if ( pTypeDescr->pMapMemberIndexToFunctionIndex[nMemberPos] == nFunctionIndex ) + { + // is GET method + eRet = cpp2uno_call( pCppI, aMemberDescr.get(), pAttrTypeRef, + 0, nullptr, // no params + gpreg, fpreg, ovrflw, pRegisterReturn ); + } + else + { + // is SET method + typelib_MethodParameter aParam; + aParam.pTypeRef = pAttrTypeRef; + aParam.bIn = true; + aParam.bOut = false; + + eRet = cpp2uno_call( pCppI, aMemberDescr.get(), + nullptr, // 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 = nullptr; + TYPELIB_DANGER_GET( &pTD, static_cast<Type *>( gpreg[2] )->getTypeLibType() ); + if ( pTD ) + { + XInterface * pInterface = nullptr; + (*pCppI->getBridge()->getCppEnv()->getRegisteredInterface) + ( pCppI->getBridge()->getCppEnv(), + reinterpret_cast<void **>(&pInterface), + pCppI->getOid().pData, + reinterpret_cast<typelib_InterfaceTypeDescription *>( pTD ) ); + + if ( pInterface ) + { + ::uno_any_construct( static_cast<uno_Any *>( gpreg[0] ), + &pInterface, pTD, cpp_acquire ); + + pInterface->release(); + TYPELIB_DANGER_RELEASE( pTD ); + + reinterpret_cast<void **>( pRegisterReturn )[0] = gpreg[0]; + eRet = typelib_TypeClass_ANY; + break; + } + TYPELIB_DANGER_RELEASE( pTD ); + } + [[fallthrough]]; // else perform queryInterface() + } + default: + { + typelib_InterfaceMethodTypeDescription *pMethodTD = + reinterpret_cast<typelib_InterfaceMethodTypeDescription *>( aMemberDescr.get() ); + + eRet = cpp2uno_call( pCppI, aMemberDescr.get(), + pMethodTD->pReturnTypeRef, + pMethodTD->nParams, + pMethodTD->pParams, + gpreg, fpreg, ovrflw, pRegisterReturn ); + } + } + break; + } + default: + { + throw RuntimeException("no member description found!", + reinterpret_cast<XInterface *>( pCppI ) ); + } + } + + return eRet; +} + +const int codeSnippetSize = 24; + +// Generate a trampoline that redirects method calls to +// privateSnippetExecutor(). +// +// privateSnippetExecutor() saves all the registers that are used for +// parameter passing on x86_64, and calls the cpp_vtable_call(). +// When it returns, privateSnippetExecutor() sets the return value. +// +// Note: The code snippet we build here must not create a stack frame, +// otherwise the UNO exceptions stop working thanks to non-existing +// unwinding info. +static unsigned char * codeSnippet( unsigned char * code, + sal_Int32 nFunctionIndex, sal_Int32 nVtableOffset, + bool bHasHiddenParam ) +{ + sal_uInt64 nOffsetAndIndex = ( static_cast<sal_uInt64>(nVtableOffset) << 32 ) | static_cast<sal_uInt64>(nFunctionIndex); + + if ( bHasHiddenParam ) + nOffsetAndIndex |= 0x80000000; + + // movq $<nOffsetAndIndex>, %r10 + *reinterpret_cast<sal_uInt16 *>( code ) = 0xba49; + *reinterpret_cast<sal_uInt16 *>( code + 2 ) = nOffsetAndIndex & 0xFFFF; + *reinterpret_cast<sal_uInt32 *>( code + 4 ) = nOffsetAndIndex >> 16; + *reinterpret_cast<sal_uInt16 *>( code + 8 ) = nOffsetAndIndex >> 48; + + // movq $<address of the privateSnippetExecutor>, %r11 + *reinterpret_cast<sal_uInt16 *>( code + 10 ) = 0xbb49; + *reinterpret_cast<sal_uInt32 *>( code + 12 ) + = reinterpret_cast<sal_uInt64>(privateSnippetExecutor); + *reinterpret_cast<sal_uInt32 *>( code + 16 ) + = reinterpret_cast<sal_uInt64>(privateSnippetExecutor) >> 32; + + // jmpq *%r11 + *reinterpret_cast<sal_uInt32 *>( code + 20 ) = 0x00e3ff49; + +#if OSL_DEBUG_LEVEL > 1 + fprintf(stderr, + "==> codeSnippet, functionIndex=%d%s, vtableOffset=%d\n", + nFunctionIndex, (bHasHiddenParam ? "|0x80000000":""), nVtableOffset); +#endif + + 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; +} + +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 vtableNumber, + typelib_InterfaceTypeDescription * type) +{ + Slot * slots = mapBlockToVtable(block); + slots[-2].fn = reinterpret_cast<void *>(-(vtableNumber * sizeof (void *))); +#if ENABLE_RUNTIME_OPTIMIZATIONS + slots[-1].fn = nullptr; + (void)type; +#else + slots[-1].fn = x86_64::getRtti(type->aBase); +#endif + 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 nFunctionOffset, + sal_Int32 functionCount, sal_Int32 nVtableOffset ) +{ + (*slots) -= functionCount; + Slot * s = *slots; + for ( sal_Int32 nPos = 0; nPos < type->nMembers; ++nPos ) + { + typelib_TypeDescription * pTD = nullptr; + + TYPELIB_DANGER_GET( &pTD, type->ppMembers[ nPos ] ); + assert(pTD); + + if ( pTD->eTypeClass == typelib_TypeClass_INTERFACE_ATTRIBUTE ) + { + typelib_InterfaceAttributeTypeDescription *pAttrTD = + reinterpret_cast<typelib_InterfaceAttributeTypeDescription *>( pTD ); + + // get method + (s++)->fn = code + writetoexecdiff; + code = codeSnippet( code, nFunctionOffset++, nVtableOffset, + x86_64::return_in_hidden_param( pAttrTD->pAttributeTypeRef ) ); + + if ( ! pAttrTD->bReadOnly ) + { + // set method + (s++)->fn = code + writetoexecdiff; + code = codeSnippet( code, nFunctionOffset++, nVtableOffset, false ); + } + } + else if ( pTD->eTypeClass == typelib_TypeClass_INTERFACE_METHOD ) + { + typelib_InterfaceMethodTypeDescription *pMethodTD = + reinterpret_cast<typelib_InterfaceMethodTypeDescription *>( pTD ); + + (s++)->fn = code + writetoexecdiff; + code = codeSnippet( code, nFunctionOffset++, nVtableOffset, + x86_64::return_in_hidden_param( pMethodTD->pReturnTypeRef ) ); + } + else + assert(false); + + TYPELIB_DANGER_RELEASE( pTD ); + } + return code; +} + +void bridges::cpp_uno::shared::VtableFactory::flushCode( + SAL_UNUSED_PARAMETER unsigned char const *, + SAL_UNUSED_PARAMETER unsigned char const * ) +{} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |