diff options
Diffstat (limited to 'bridges/source/cpp_uno/gcc3_linux_riscv64/cpp2uno.cxx')
| -rw-r--r-- | bridges/source/cpp_uno/gcc3_linux_riscv64/cpp2uno.cxx | 825 |
1 files changed, 825 insertions, 0 deletions
diff --git a/bridges/source/cpp_uno/gcc3_linux_riscv64/cpp2uno.cxx b/bridges/source/cpp_uno/gcc3_linux_riscv64/cpp2uno.cxx new file mode 100644 index 0000000000..99965c5700 --- /dev/null +++ b/bridges/source/cpp_uno/gcc3_linux_riscv64/cpp2uno.cxx @@ -0,0 +1,825 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */ +/* + * 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 <com/sun/star/uno/genfunc.hxx> +#include <sal/log.hxx> +#include <typelib/typedescription.hxx> +#include <uno/data.h> +#include <osl/endian.h> +#include "bridge.hxx" +#include "cppinterfaceproxy.hxx" +#include "types.hxx" +#include "vtablefactory.hxx" +#include "call.hxx" +#include "share.hxx" +#include "abi.hxx" + +#include <stdio.h> +//#include <string.h> +#include <cstring> +#include <typeinfo> + +using namespace com::sun::star::uno; + +//#define BRIDGE_DEBUG + +#ifdef BRIDGE_DEBUG +#include <rtl/strbuf.hxx> +#include <rtl/ustrbuf.hxx> +using namespace ::std; +using namespace ::osl; +using namespace ::rtl; +#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 sal_Int32 +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 */) +{ +#ifdef BRIDGE_DEBUG + printf("In cpp2uno_call, pThis = %p, pMemberTypeDescr = %p, pReturnTypeRef = %p\n", pThis, + pMemberTypeDescr, pReturnTypeRef); + printf("In cpp2uno_call, nParams = %d, pParams = %p, pRegisterReturn = %p\n", nParams, pParams, + pRegisterReturn); + printf("In cpp2uno_call, gpreg = %p, fpreg = %p, ovrflw = %p\n", gpreg, fpreg, ovrflw); +#endif + unsigned int nr_gpr = 0; + unsigned int nr_fpr = 0; + + char* gpreg_t = reinterpret_cast<char*>(gpreg); + char* fpreg_t = reinterpret_cast<char*>(fpreg); + +#ifdef BRIDGE_DEBUG + fprintf(stdout, "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++; // complex return via ptr (pCppReturn) + nr_gpr++; + + pUnoReturn = (bridges::cpp_uno::shared::relatesToInterfaceType(pReturnTypeDescr) + ? alloca(pReturnTypeDescr->nSize) + : pCppReturn); // direct way +#ifdef BRIDGE_DEBUG + fprintf(stdout, "cpp2uno_call:complexreturn\n"); +#endif + } + else + { + pUnoReturn = pRegisterReturn; // direct way for simple types +#ifdef BRIDGE_DEBUG + fprintf(stdout, "cpp2uno_call:simplereturn\n"); +#endif + } + } + + // pop this + gpreg++; + nr_gpr++; + + // 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 BRIDGE_DEBUG + fprintf(stdout, "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 BRIDGE_DEBUG + fprintf(stdout, "cpp2uno_call:Param %u, type %u\n", nPos, pParamTypeDescr->eTypeClass); +#endif + switch (pParamTypeDescr->eTypeClass) + { + case typelib_TypeClass_FLOAT: + case typelib_TypeClass_DOUBLE: + if (nr_fpr < MAX_FP_REGS) + { +#ifdef BRIDGE_DEBUG + fprintf(stdout, "cpp2uno_call:fpr=%p\n", *fpreg); +#endif + pCppArgs[nPos] = pUnoArgs[nPos] = fpreg++; + nr_fpr++; + } + else if (nr_gpr < MAX_GP_REGS) + { +#ifdef BRIDGE_DEBUG + fprintf(stdout, "cpp2uno_call:fpr=%p\n", *gpreg); +#endif + pCppArgs[nPos] = pUnoArgs[nPos] = gpreg++; + nr_gpr++; + } + else + { +#ifdef BRIDGE_DEBUG + fprintf(stdout, "cpp2uno_call:fpr=%p\n", *ovrflw); +#endif + pCppArgs[nPos] = pUnoArgs[nPos] = ovrflw++; + } + + break; + + default: + if (nr_gpr < MAX_GP_REGS) + { +#ifdef BRIDGE_DEBUG + fprintf(stdout, "cpp2uno_call:gpr=%p\n", *gpreg); +#endif + pCppArgs[nPos] = pUnoArgs[nPos] = gpreg++; + nr_gpr++; + } + else + { +#ifdef BRIDGE_DEBUG + fprintf(stdout, "cpp2uno_call:gpr=%p\n", *ovrflw); +#endif + pCppArgs[nPos] = pUnoArgs[nPos] = ovrflw++; + } + break; + } + // no longer needed + TYPELIB_DANGER_RELEASE(pParamTypeDescr); + } + else // ptr to complex value | ref + { +#ifdef BRIDGE_DEBUG + fprintf(stdout, "cpp2uno_call:ptr|ref\n"); +#endif + void* pCppStack; + if (nr_gpr < MAX_GP_REGS) + { + pCppArgs[nPos] = pCppStack = *gpreg++; + nr_gpr++; + } + else + { + pCppArgs[nPos] = pCppStack = *ovrflw++; + } +#ifdef BRIDGE_DEBUG + fprintf(stdout, "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 BRIDGE_DEBUG + fprintf(stdout, "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 BRIDGE_DEBUG + fprintf(stdout, "cpp2uno_call:direct,pUnoArgs[%d]=%p\n", nPos, pUnoArgs[nPos]); +#endif + // no longer needed + TYPELIB_DANGER_RELEASE(pParamTypeDescr); + } + } + } +#ifdef BRIDGE_DEBUG + fprintf(stdout, "cpp2uno_call2,%p,unoargs=%p\n", pThis->getUnoI()->pDispatcher, pUnoArgs); + printf("pMemberTypeDescr=%p,pUnoReturn=%p\n", pMemberTypeDescr, pUnoReturn); +#endif + + // ExceptionHolder + uno_Any aUnoExc; // Any will be constructed by callee + uno_Any* pUnoExc = &aUnoExc; +#ifdef BRIDGE_DEBUG + printf("pThis=%p,pThis->getUnoI()=%p,pMemberTypeDescr=%p\npUnoReturn=%p,pUnoArgs=%p", pThis, + pThis->getUnoI(), pMemberTypeDescr, pUnoReturn, pUnoArgs); +#endif + // invoke uno dispatch call + (*pThis->getUnoI()->pDispatcher)(pThis->getUnoI(), pMemberTypeDescr, pUnoReturn, pUnoArgs, + &pUnoExc); +#ifdef BRIDGE_DEBUG + fprintf(stdout, "cpp2uno_call2,after dispatch\n"); +#endif + + // in case an exception occurred... + if (pUnoExc) + { + fflush(stdout); + // 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); + } + void* retout = nullptr; // avoid false -Werror=maybe-uninitialized + // return + sal_Int32 returnType = 0; + if (pReturnTypeDescr) + { + char* pReturn = reinterpret_cast<char*>(pRegisterReturn); + if (!bridges::cpp_uno::shared::relatesToInterfaceType(pReturnTypeDescr)) + { + switch (pReturnTypeDescr == nullptr ? typelib_TypeClass_VOID + : pReturnTypeDescr->eTypeClass) + { + case typelib_TypeClass_HYPER: + case typelib_TypeClass_UNSIGNED_HYPER: + case typelib_TypeClass_ENUM: + case typelib_TypeClass_CHAR: + case typelib_TypeClass_SHORT: + case typelib_TypeClass_UNSIGNED_SHORT: + case typelib_TypeClass_BOOLEAN: + case typelib_TypeClass_BYTE: + std::memcpy(pReturn, pUnoReturn, 8); + break; + // Sometimes we need to return a 32 bit integer into a 64 bit integer. + // For example, in pyuno.cxx:PyUNO_bool(), an int(32bit) is returned + // in type Py_ssize_t(64bit) + // We assume that this 32bit int was put in low 32 bit of register a0. + // The bridge may return with high 32 bit uncleaned and compiler might + // directly bind this register to 64 bit variable. + // + // This bug occurs when build pyuno with gcc-12 with -O2. + // https://bugs.documentfoundation.org/show_bug.cgi?id=155937 + // + // So we need to clean the high 32 bit in bridge. + case typelib_TypeClass_UNSIGNED_LONG: + std::memset(pReturn + 4, 0x0, 4); + std::memcpy(pReturn, pUnoReturn, 4); + break; + case typelib_TypeClass_LONG: + if (*reinterpret_cast<sal_uInt32*>(pUnoReturn) & 0x80000000) + std::memset(pReturn + 4, 0xFF, 4); + else + std::memset(pReturn + 4, 0x0, 4); + std::memcpy(pReturn, pUnoReturn, 4); + break; + case typelib_TypeClass_FLOAT: + std::memcpy(pReturn, pUnoReturn, 4); + std::memset(pReturn + 4, 0xFF, 4); + break; + case typelib_TypeClass_DOUBLE: + std::memcpy(pReturn, pUnoReturn, 8); + break; + case typelib_TypeClass_STRUCT: + case typelib_TypeClass_EXCEPTION: + { + std::memcpy(pReturn, pUnoReturn, 16); + sal_Int32 nGreg = 0; + sal_Int32 nFreg = 0; + abi_riscv64::countnGreg( + nGreg, nFreg, + reinterpret_cast<typelib_CompoundTypeDescription const*>( + pReturnTypeDescr)); + if (pReturnTypeDescr->nSize <= 8 && nFreg == 2 && nGreg == 0) + { + std::memcpy(pReturn + 8, pReturn + 4, 4); + std::memset(pReturn + 4, 0xFF, 4); + std::memset(pReturn + 12, 0xFF, 4); + } + else if (nGreg == 1 && nFreg == 1) + { + returnType = 1; + if (pReturnTypeDescr->nSize <= 8) + { + std::memcpy(pReturn + 8, pReturn + 4, 4); + std::memset(pReturn + 12, 0xFF, 4); + } + } + } + break; + case typelib_TypeClass_VOID: + break; + default: + if (pUnoReturn) + { + std::memcpy(pRegisterReturn, pUnoReturn, 16); + } +#ifdef BRIDGE_DEBUG + printf("Unhandled Type: %d\n", pReturnTypeDescr->eTypeClass); +#endif + } + } + else + { + 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; + } + TYPELIB_DANGER_RELEASE(pReturnTypeDescr); + } + return returnType; + } +} + +/** + * is called on incoming vtable calls + * (called by asm snippets) + */ +sal_Int32 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 BRIDGE_DEBUG + fprintf(stdout, "in cpp_vtable_call nFunctionIndex is %d\n", nFunctionIndex); + fprintf(stdout, "in cpp_vtable_call nVtableOffset is %d\n", nVtableOffset); + fprintf(stdout, "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 BRIDGE_DEBUG + fprintf(stdout, "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 BRIDGE_DEBUG + fprintf(stdout, "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 BRIDGE_DEBUG + //OString cstr( OUStringToOString( aMemberDescr.get()->pTypeName, RTL_TEXTENCODING_ASCII_US ) ); + //fprintf(stdout, "calling %s, nFunctionIndex=%d\n", cstr.getStr(), nFunctionIndex ); +#endif + sal_Int32 eRet; + switch (aMemberDescr.get()->eTypeClass) + { + case typelib_TypeClass_INTERFACE_ATTRIBUTE: + { +#ifdef BRIDGE_DEBUG + fprintf(stdout, "cpp_vtable_call interface attribute\n"); +#endif + 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, 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 BRIDGE_DEBUG + fprintf(stdout, "cpp_vtable_call interface method\n"); +#endif + // is METHOD + switch (nFunctionIndex) + { + case 1: // acquire() +#ifdef BRIDGE_DEBUG + fprintf(stdout, "cpp_vtable_call method acquire\n"); +#endif + pCppI->acquireProxy(); // non virtual call! + eRet = 0; + break; + case 2: // release() +#ifdef BRIDGE_DEBUG + fprintf(stdout, "cpp_vtable_call method release\n"); +#endif + pCppI->releaseProxy(); // non virtual call! + eRet = 0; + break; + case 0: // queryInterface() opt + { +#ifdef BRIDGE_DEBUG + fprintf(stdout, "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<typelib_InterfaceTypeDescription*>(pTD)); + + if (pInterface) + { + ::uno_any_construct(reinterpret_cast<uno_Any*>(gpreg[0]), &pInterface, + pTD, cpp_acquire); + + pInterface->release(); + TYPELIB_DANGER_RELEASE(pTD); + + reinterpret_cast<void**>(pRegisterReturn)[0] = gpreg[0]; + eRet = 0; + break; + } + TYPELIB_DANGER_RELEASE(pTD); + } + } // else perform queryInterface() + default: +#ifdef BRIDGE_DEBUG + fprintf(stdout, "cpp_vtable_call method query interface\n"); +#endif + 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: + { +#ifdef BRIDGE_DEBUG + fprintf(stdout, "cpp_vtable_call no member\n"); +#endif + throw RuntimeException("no member description found!", (XInterface*)pThis); + } + } + + return eRet; +} + +extern "C" void privateSnippetExecutor(...); + +int const codeSnippetSize = 0x6c; + +unsigned char* codeSnippet(unsigned char* code, sal_Int32 functionIndex, sal_Int32 vtableOffset, + bool bHasHiddenParam) +{ +#ifdef BRIDGE_DEBUG + fprintf(stdout, "in codeSnippet functionIndex is %d\n", functionIndex); + fprintf(stdout, "in codeSnippet vtableOffset is %d\n", vtableOffset); + fprintf(stdout, "in codeSnippet privateSnippetExecutor is %lx\n", + (unsigned long)privateSnippetExecutor); + fprintf(stdout, "in codeSnippet cpp_vtable_call is %lx\n", (unsigned long)cpp_vtable_call); + + fflush(stdout); +#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 */ + /* + It is complex to load a 64bit address because you cannot load + an unsigned number to register on RISC-V. + # load functionIndex to t4 + 00000eb7 lui t4,0x0 + 000eee93 ori t4,t4,0x0 + # load privateSnippetExecutor to t0 + 000002b7 lui t0,0x0 + 02429293 slli t0,t0,36 + 00000337 lui t1,0x0 + 01431313 slli t1,t1,20 + 0062e2b3 or t0,t0,t1 + 00000337 lui t1,0x0 + 00431313 slli t1,t1,4 + 0062e2b3 or t0,t0,t1 + 00000337 lui t1,0x0 + 00c35313 srli t1,t1,12 + 0062e2b3 or t0,t0,t1 + # load cpp_vtable_call to t6 + 00000fb7 lui t6,0x0 + 024f9f93 slli t6,t6,36 + 00000337 lui t1,0x0 + 01431313 slli t1,t1,20 + 006fefb3 or t6,t6,t1 + 00000337 lui t1,0x0 + 00431313 slli t1,t1,4 + 006fefb3 or t6,t6,t1 + 00000337 lui t1,0x0 + 00c35313 srli t1,t1,12 + 006fefb3 or t6,t6,t1 + # load vtableOffset to t5 + 00000f37 lui t5,0x0 + 000f6f13 ori t5,t5,0x0 + # jump to privateSnippetExecutor + 00028067 jalr zero,t0,0x0 + */ + + *p++ = 0x00000eb7 | ((functionIndex)&0xfffff000); + *p++ = 0x000eee93 | ((functionIndex << 20) & 0xfff00000); + + // load privateSnippetExecutor to t0 + unsigned long functionEntry = ((unsigned long)privateSnippetExecutor); + *p++ = 0x000002b7 | ((functionEntry >> 36) & 0x000000000ffff000); + *p++ = 0x02429293; + *p++ = 0x00000337 | ((functionEntry >> 20) & 0x000000000ffff000); + *p++ = 0x01431313; + *p++ = 0x0062e2b3; + *p++ = 0x00000337 | ((functionEntry >> 4) & 0x000000000ffff000); + *p++ = 0x00431313; + *p++ = 0x0062e2b3; + *p++ = 0x00000337 | ((functionEntry << 12) & 0x000000000ffff000); + *p++ = 0x00c35313; + *p++ = 0x0062e2b3; + // load cpp_vtable_call to t6 + functionEntry = (unsigned long)cpp_vtable_call; + *p++ = 0x00000fb7 | ((functionEntry >> 36) & 0x000000000ffff000); + *p++ = 0x024f9f93; + *p++ = 0x00000337 | ((functionEntry >> 20) & 0x000000000ffff000); + *p++ = 0x01431313; + *p++ = 0x006fefb3; + *p++ = 0x00000337 | ((functionEntry >> 4) & 0x000000000ffff000); + *p++ = 0x00431313; + *p++ = 0x006fefb3; + *p++ = 0x00000337 | ((functionEntry << 12) & 0x000000000ffff000); + *p++ = 0x00c35313; + *p++ = 0x006fefb3; + // load vtableOffset to t5 + *p++ = 0x00000f37 | ((vtableOffset)&0xfffff000); + *p++ = 0x000f6f13 | ((vtableOffset << 20) & 0xfff00000); + // jump to privateSnippetExecutor + *p++ = 0x00028067; + return (code + codeSnippetSize); +} +} + +void bridges::cpp_uno::shared::VtableFactory::flushCode(unsigned char const* bptr, + unsigned char const* eptr) +{ + asm volatile("fence" :::); +} + +struct bridges::cpp_uno::shared::VtableFactory::Slot +{ + void const* 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; +} + +namespace +{ +// Some dummy type whose RTTI is used in the synthesized proxy vtables to make uses of dynamic_cast +// on such proxy objects not crash: +struct ProxyRtti +{ +}; +} + +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 = &typeid(ProxyRtti); + 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 BRIDGE_DEBUG + fprintf(stdout, "in addLocalFunctions functionOffset is %d\n", functionOffset); + fprintf(stdout, "in addLocalFunctions vtableOffset is %d\n", vtableOffset); + fprintf(stdout, "nMembers=%d\n", type->nMembers); + fflush(stdout); +#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 cinoptions=b1,g0,N-s cinkeys+=0=break: */ |