diff options
Diffstat (limited to 'bridges/source/cpp_uno/gcc3_linux_arm/cpp2uno.cxx')
| -rw-r--r-- | bridges/source/cpp_uno/gcc3_linux_arm/cpp2uno.cxx | 586 |
1 files changed, 586 insertions, 0 deletions
diff --git a/bridges/source/cpp_uno/gcc3_linux_arm/cpp2uno.cxx b/bridges/source/cpp_uno/gcc3_linux_arm/cpp2uno.cxx new file mode 100644 index 000000000..103f2b492 --- /dev/null +++ b/bridges/source/cpp_uno/gcc3_linux_arm/cpp2uno.cxx @@ -0,0 +1,586 @@ +/* -*- 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 <rtl/alloc.h> +#include <sal/log.hxx> + +#include <com/sun/star/uno/genfunc.hxx> +#include <com/sun/star/uno/RuntimeException.hpp> +#include <uno/data.h> +#include <typelib/typedescription.hxx> + +#include <bridge.hxx> +#include <cppinterfaceproxy.hxx> +#include <types.hxx> +#include <vtablefactory.hxx> + +#include "share.hxx" +#include "call.hxx" + +#include <dlfcn.h> + +#ifdef ANDROID +#include <unistd.h> +#endif + +using namespace ::osl; +using namespace ::com::sun::star::uno; + +namespace +{ + + typelib_TypeClass cpp2uno_call( + bridges::cpp_uno::shared::CppInterfaceProxy* pThis, + const typelib_TypeDescription * pMemberTypeDescr, + typelib_TypeDescriptionReference * pReturnTypeRef, + sal_Int32 nParams, typelib_MethodParameter * pParams, + void ** pCallStack, + sal_Int64 * pRegisterReturn /* space for register return */ ) + { + // pCallStack: ret, [return ptr], this, params + char * pTopStack = reinterpret_cast<char *>(pCallStack + 0); + char * pCppStack = pTopStack; + +#ifdef __ARM_PCS_VFP + int dc = 0; + char * pFloatArgs = reinterpret_cast<char *>(pCppStack - 64); +#endif + // return + typelib_TypeDescription * pReturnTypeDescr = nullptr; + if (pReturnTypeRef) + TYPELIB_DANGER_GET( &pReturnTypeDescr, pReturnTypeRef ); + + void * pUnoReturn = nullptr; + // complex return ptr: if != 0 && != pUnoReturn, reconversion need + void * pCppReturn = nullptr; + + if (pReturnTypeDescr) + { + if (!arm::return_in_hidden_param(pReturnTypeRef)) + pUnoReturn = pRegisterReturn; // direct way for simple types + else // complex return via ptr (pCppReturn) + { + pCppReturn = *reinterpret_cast<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 + static_assert(sizeof(void *) == sizeof(sal_Int32), + "### unexpected size!"); + // 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]; + typelib_TypeDescription * pParamTypeDescr = nullptr; + TYPELIB_DANGER_GET( &pParamTypeDescr, rParam.pTypeRef ); + + if (!rParam.bOut && + bridges::cpp_uno::shared::isSimpleType( pParamTypeDescr )) + { +#ifdef __ARM_EABI__ + switch (pParamTypeDescr->eTypeClass) + { + case typelib_TypeClass_HYPER: + case typelib_TypeClass_UNSIGNED_HYPER: +#ifndef __ARM_PCS_VFP + case typelib_TypeClass_DOUBLE: +#endif + if ((pCppStack - pTopStack) % 8) pCppStack+=sizeof(sal_Int32); //align to 8 + break; + default: + break; + } +#endif + +// For armhf we get the floating point arguments from a different area of the stack +#ifdef __ARM_PCS_VFP + if (pParamTypeDescr->eTypeClass == typelib_TypeClass_FLOAT) + { + pCppArgs[nPos] = pUnoArgs[nPos] = pFloatArgs; + pFloatArgs += sizeof(float); + } else + if (pParamTypeDescr->eTypeClass == typelib_TypeClass_DOUBLE) + { + if ((pFloatArgs - pTopStack) % 8) pFloatArgs+=sizeof(float); //align to 8 + pCppArgs[nPos] = pUnoArgs[nPos] = pFloatArgs; + pFloatArgs += sizeof(double); + if (++dc == arm::MAX_FPR_REGS) { + if (pCppStack - pTopStack < 16) + pCppStack = pTopStack + 16; + pFloatArgs = pCppStack; + } + } else +#endif + pCppArgs[nPos] = pUnoArgs[nPos] = pCppStack; + + switch (pParamTypeDescr->eTypeClass) + { + case typelib_TypeClass_HYPER: + case typelib_TypeClass_UNSIGNED_HYPER: +#ifndef __ARM_PCS_VFP + case typelib_TypeClass_DOUBLE: +#endif + pCppStack += sizeof(sal_Int32); // extra long + break; + default: + break; + } + // no longer needed + TYPELIB_DANGER_RELEASE( pParamTypeDescr ); + } + else // ptr to complex value | ref + { + pCppArgs[nPos] = *reinterpret_cast<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 ), + *reinterpret_cast<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] = *reinterpret_cast<void **>(pCppStack); + // no longer needed + TYPELIB_DANGER_RELEASE( pParamTypeDescr ); + } + } +#ifdef __ARM_PCS_VFP + // use the stack for output parameters or non floating point values + if (rParam.bOut || + ((pParamTypeDescr->eTypeClass != typelib_TypeClass_DOUBLE) + && (pParamTypeDescr->eTypeClass != typelib_TypeClass_FLOAT)) + ) +#endif + 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 + 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 eax + *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_mediate( + sal_Int32 nFunctionIndex, sal_Int32 nVtableOffset, + void ** pCallStack, + sal_Int64 * pRegisterReturn /* space for register return */ ) + { + static_assert(sizeof(sal_Int32)==sizeof(void *), "### unexpected!"); + + // pCallStack: [ret *], this, params + // _this_ ptr is patched cppu_XInterfaceProxy object + void *pThis; + if( nFunctionIndex & 0x80000000 ) + { + nFunctionIndex &= 0x7fffffff; + pThis = pCallStack[1]; + } + else + { + pThis = pCallStack[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 + assert(nFunctionIndex < pTypeDescr->nMapFunctionIndexToMemberIndex); + 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(), + reinterpret_cast<typelib_InterfaceAttributeTypeDescription *>(aMemberDescr.get())->pAttributeTypeRef, + 0, nullptr, // no params + pCallStack, pRegisterReturn ); + } + else + { + // is SET method + typelib_MethodParameter aParam; + aParam.pTypeRef = + reinterpret_cast<typelib_InterfaceAttributeTypeDescription *>(aMemberDescr.get())->pAttributeTypeRef; + aParam.bIn = true; + aParam.bOut = false; + + eRet = cpp2uno_call( + pCppI, aMemberDescr.get(), + nullptr, // 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 = nullptr; + TYPELIB_DANGER_GET(&pTD, + static_cast<Type *>(pCallStack[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 * >( pCallStack[0] ), + &pInterface, pTD, cpp_acquire ); + pInterface->release(); + TYPELIB_DANGER_RELEASE( pTD ); + *reinterpret_cast<void **>(pRegisterReturn) = pCallStack[0]; + eRet = typelib_TypeClass_ANY; + break; + } + TYPELIB_DANGER_RELEASE( pTD ); + } + } [[fallthrough]]; // else perform queryInterface() + default: + eRet = cpp2uno_call( + pCppI, aMemberDescr.get(), + reinterpret_cast<typelib_InterfaceMethodTypeDescription *>(aMemberDescr.get())->pReturnTypeRef, + reinterpret_cast<typelib_InterfaceMethodTypeDescription *>(aMemberDescr.get())->nParams, + reinterpret_cast<typelib_InterfaceMethodTypeDescription *>(aMemberDescr.get())->pParams, + pCallStack, pRegisterReturn ); + } + break; + } + default: + { + throw RuntimeException( "no member description found!", reinterpret_cast<XInterface *>(pCppI) ); + } + } + + return eRet; + } +} + +/** + * is called on incoming vtable calls + * (called by asm snippets) + */ + +sal_Int64 cpp_vtable_call( long *pFunctionAndOffset, + void **pCallStack ) +{ + sal_Int64 nRegReturn; + typelib_TypeClass aType = cpp_mediate( pFunctionAndOffset[0], pFunctionAndOffset[1], pCallStack, + &nRegReturn ); + + switch( aType ) + { + case typelib_TypeClass_BOOLEAN: + case typelib_TypeClass_BYTE: + nRegReturn = static_cast<unsigned long>(*reinterpret_cast<unsigned char *>(&nRegReturn)); + break; + case typelib_TypeClass_CHAR: + case typelib_TypeClass_UNSIGNED_SHORT: + case typelib_TypeClass_SHORT: + nRegReturn = static_cast<unsigned long>(*reinterpret_cast<unsigned short *>(&nRegReturn)); + break; + case typelib_TypeClass_ENUM: + case typelib_TypeClass_UNSIGNED_LONG: + case typelib_TypeClass_LONG: + nRegReturn = static_cast<unsigned long>(*reinterpret_cast<unsigned int *>(&nRegReturn)); + break; + case typelib_TypeClass_VOID: + default: + break; + } + + return nRegReturn; +} + +namespace +{ + const int codeSnippetSize = 20; + + unsigned char *codeSnippet(unsigned char* code, sal_Int32 functionIndex, + sal_Int32 vtableOffset, bool bHasHiddenParam) + { + if (bHasHiddenParam) + functionIndex |= 0x80000000; + + unsigned long * p = reinterpret_cast<unsigned long *>(code); + + // ARM (not thumb) mode instructions + // mov ip, pc + *p++ = 0xE1A0C00F; + // ldr pc, [pc, #4] + *p++ = 0xE59FF004; + *p++ = static_cast<unsigned long>(functionIndex); + *p++ = static_cast<unsigned long>(vtableOffset); + *p++ = reinterpret_cast<unsigned long>(privateSnippetExecutor); + + 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, + typelib_InterfaceTypeDescription *) +{ + Slot * slots = mapBlockToVtable(block); + slots[-2].fn = nullptr; + slots[-1].fn = nullptr; + return slots + slotCount; +} + +unsigned char * bridges::cpp_uno::shared::VtableFactory::addLocalFunctions( + Slot ** slots, unsigned char * code, +#ifdef USE_DOUBLE_MMAP + sal_PtrDiff writetoexecdiff, +#endif + typelib_InterfaceTypeDescription const * type, sal_Int32 functionOffset, + sal_Int32 functionCount, sal_Int32 vtableOffset) +{ +#ifndef USE_DOUBLE_MMAP + const sal_PtrDiff writetoexecdiff = 0; +#endif + (*slots) -= functionCount; + Slot * s = *slots; + for (sal_Int32 i = 0; i < type->nMembers; ++i) + { + typelib_TypeDescription * member = nullptr; + TYPELIB_DANGER_GET(&member, type->ppMembers[i]); + assert(member != 0); + switch (member->eTypeClass) + { + case typelib_TypeClass_INTERFACE_ATTRIBUTE: + { + typelib_InterfaceAttributeTypeDescription *pAttrTD = + reinterpret_cast<typelib_InterfaceAttributeTypeDescription *>( member ); + + // Getter: + (s++)->fn = code + writetoexecdiff; + code = codeSnippet( + code, functionOffset++, vtableOffset, + arm::return_in_hidden_param( pAttrTD->pAttributeTypeRef )); + + // Setter: + if (!pAttrTD->bReadOnly) + { + (s++)->fn = code + writetoexecdiff; + code = codeSnippet( + code, functionOffset++, vtableOffset, false); + } + break; + } + case typelib_TypeClass_INTERFACE_METHOD: + { + (s++)->fn = code + writetoexecdiff; + + typelib_InterfaceMethodTypeDescription *pMethodTD = + reinterpret_cast< + typelib_InterfaceMethodTypeDescription * >(member); + + code = codeSnippet(code, functionOffset++, vtableOffset, + arm::return_in_hidden_param(pMethodTD->pReturnTypeRef)); + break; + } + default: + assert(false); + break; + } + TYPELIB_DANGER_RELEASE(member); + } + return code; +} + +void bridges::cpp_uno::shared::VtableFactory::flushCode( + unsigned char const *beg, unsigned char const *end) +{ +#ifndef ANDROID + static void (*clear_cache)(unsigned char const*, unsigned char const*) + = reinterpret_cast<void (*)(unsigned char const*, unsigned char const*)> + (dlsym(RTLD_DEFAULT, "__clear_cache")); + (*clear_cache)(beg, end); +#else + cacheflush((long) beg, (long) end, 0); +#endif +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |