diff options
Diffstat (limited to 'bridges/source/cpp_uno/gcc3_linux_powerpc/uno2cpp.cxx')
| -rw-r--r-- | bridges/source/cpp_uno/gcc3_linux_powerpc/uno2cpp.cxx | 686 |
1 files changed, 686 insertions, 0 deletions
diff --git a/bridges/source/cpp_uno/gcc3_linux_powerpc/uno2cpp.cxx b/bridges/source/cpp_uno/gcc3_linux_powerpc/uno2cpp.cxx new file mode 100644 index 000000000..cce78ba95 --- /dev/null +++ b/bridges/source/cpp_uno/gcc3_linux_powerpc/uno2cpp.cxx @@ -0,0 +1,686 @@ +/* -*- 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 <sal/config.h> + +#include <exception> +#include <malloc.h> +#include <typeinfo> + +#include <com/sun/star/uno/Exception.hpp> +#include <com/sun/star/uno/RuntimeException.hpp> +#include <com/sun/star/uno/genfunc.hxx> +#include <o3tl/runtimetooustring.hxx> +#include <uno/data.h> + +#include "bridge.hxx" +#include "types.hxx" +#include "unointerfaceproxy.hxx" +#include "vtables.hxx" + +#include "share.hxx" + + +using namespace ::com::sun::star::uno; + +namespace +{ + + +static void callVirtualMethod( + void * pAdjustedThisPtr, + sal_Int32 nVtableIndex, + void * pRegisterReturn, + typelib_TypeClass eReturnType, + char * pPT, + sal_Int32 * pStackLongs, + sal_Int32 nStackLongs) +{ + + // parameter list is mixed list of * and values + // reference parameters are pointers + + // the basic idea here is to use gpr[8] as a storage area for + // the future values of registers r3 to r10 needed for the call, + // and similarly fpr[8] as a storage area for the future values + // of floating point registers f1 to f8 + + unsigned long * mfunc; // actual function to be invoked + int gpr[8]; // storage for gpregisters, map to r3-r10 + int off; // offset used to find function +#ifndef __NO_FPRS__ + double fpr[8]; // storage for fpregisters, map to f1-f8 + int f; // number of fprs mapped so far + double dret; // temporary function return values +#endif + int n; // number of gprs mapped so far + long *p; // pointer to parameter overflow area + int c; // character of parameter type being decoded + int iret, iret2; + + // Because of the Power PC calling conventions we could be passing + // parameters in both register types and on the stack. To create the + // stack parameter area we need we now simply allocate local + // variable storage param[] that is at least the size of the parameter stack + // (more than enough space) which we can overwrite the parameters into. + + // Note: This keeps us from having to decode the signature twice and + // prevents problems with later local variables. + + // Note: could require up to 2*nStackLongs words of parameter stack area + // if the call has many float parameters (i.e. floats take up only 1 + // word on the stack but double takes 2 words in parameter area in the + // stack frame. + + // Update! Floats on the outgoing parameter stack only take up 1 word + // (stfs is used) which is not correct according to the ABI but we + // will match what the compiler does until this is figured out + + // this grows the current stack to the appropriate size + // and sets the outgoing stack pointer p to the right place + __asm__ __volatile__ ( + "rlwinm %0,%0,3,3,28\n\t" + "addi %0,%0,22\n\t" + "rlwinm %0,%0,0,4,28\n\t" + "lwz 0,0(1)\n\t" + "subf 1,%0,1\n\t" + "stw 0,0(1)\n\t" + : : "r" (nStackLongs) : "0" ); + + __asm__ __volatile__ ( "addi %0,1,8" : "=r" (p) : ); + + // never called + // if (! pAdjustedThisPtr ) dummy_can_throw_anything("xxx"); // address something + + + // now begin to load the C++ function arguments into storage + n = 0; +#ifndef __NO_FPRS__ + f = 0; +#endif + + // now we need to parse the entire signature string */ + // until we get the END indicator */ + + // treat complex return pointer like any other parameter + +#if 0 + /* Let's figure out what is really going on here*/ + fprintf(stderr,"callVirtualMethod parameters string is %s\n",pPT); + int k = nStackLongs; + long * q = (long *)pStackLongs; + while (k > 0) { + fprintf(stderr,"uno stack is: %x\n",*q); + k--; + q++; + } +#endif + + /* parse the argument list up to the ending ) */ + while (*pPT != 'X') { + c = *pPT; + switch (c) { + case 'D': /* type is double */ +#ifndef __NO_FPRS__ + if (f < 8) { + fpr[f++] = *((double *)pStackLongs); /* store in register */ +#else + if (n & 1) + n++; + if (n < 8) { + gpr[n++] = *pStackLongs; + gpr[n++] = *(pStackLongs+1); +#endif + } else { + if (((long) p) & 4) + p++; + *p++ = *pStackLongs; /* or on the parameter stack */ + *p++ = *(pStackLongs + 1); + } + pStackLongs += 2; + break; + + case 'F': /* type is float */ + /* this assumes that floats are stored as 1 32 bit word on param + stack and that if passed in parameter stack to C, should be + as double word. + + Whoops: the abi is not actually followed by gcc, need to + store floats as a *single* word on outgoing parameter stack + to match what gcc actually does + */ +#ifndef __NO_FPRS__ + if (f < 8) { + fpr[f++] = *((float *)pStackLongs); +#else + if (n < 8) { + gpr[n++] = *pStackLongs; +#endif + } else { +#if 0 /* if abi were followed */ + if (((long) p) & 4) + p++; + *((double *)p) = *((float *)pStackLongs); + p += 2; +#else + *((float *)p) = *((float *)pStackLongs); + p += 1; +#endif + } + pStackLongs += 1; + break; + + case 'H': /* type is long long */ + if (n & 1) n++; /* note even elements gpr[] will map to + odd registers*/ + if (n <= 6) { + gpr[n++] = *pStackLongs; + gpr[n++] = *(pStackLongs+1); + } else { + if (((long) p) & 4) + p++; + *p++ = *pStackLongs; + *p++ = *(pStackLongs+1); + } + pStackLongs += 2; + break; + + case 'S': + if (n < 8) { + gpr[n++] = *((unsigned short*)pStackLongs); + } else { + *p++ = *((unsigned short *)pStackLongs); + } + pStackLongs += 1; + break; + + case 'B': + if (n < 8) { + gpr[n++] = *((char *)pStackLongs); + } else { + *p++ = *((char *)pStackLongs); + } + pStackLongs += 1; + break; + + default: + if (n < 8) { + gpr[n++] = *pStackLongs; + } else { + *p++ = *pStackLongs; + } + pStackLongs += 1; + break; + } + pPT++; + } + + /* figure out the address of the function we need to invoke */ + off = nVtableIndex; + off = off * 4; // 4 bytes per slot + mfunc = *((unsigned long **)pAdjustedThisPtr); // get the address of the vtable + mfunc = (unsigned long *)((char *)mfunc + off); // get the address from the vtable entry at offset + mfunc = *((unsigned long **)mfunc); // the function is stored at the address + typedef void (*FunctionCall)(sal_uInt32, sal_uInt32, sal_uInt32, sal_uInt32, sal_uInt32, sal_uInt32, sal_uInt32, sal_uInt32); + FunctionCall ptr = (FunctionCall)mfunc; + + /* Set up the machine registers and invoke the function */ + + __asm__ __volatile__ ( + "lwz 3, 0(%0)\n\t" + "lwz 4, 4(%0)\n\t" + "lwz 5, 8(%0)\n\t" + "lwz 6, 12(%0)\n\t" + "lwz 7, 16(%0)\n\t" + "lwz 8, 20(%0)\n\t" + "lwz 9, 24(%0)\n\t" + "lwz 10, 28(%0)\n\t" +#ifndef __NO_FPRS__ + "lfd 1, 0(%1)\n\t" + "lfd 2, 8(%1)\n\t" + "lfd 3, 16(%1)\n\t" + "lfd 4, 24(%1)\n\t" + "lfd 5, 32(%1)\n\t" + "lfd 6, 40(%1)\n\t" + "lfd 7, 48(%1)\n\t" + "lfd 8, 56(%1)\n\t" + : : "r" (gpr), "r" (fpr) +#else + : : "r" (gpr) +#endif + : "0", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12" + ); + + // tell gcc that r3 to r10 are not available to it for doing the TOC and exception munge on the func call + register sal_uInt32 r3 __asm__("r3"); + register sal_uInt32 r4 __asm__("r4"); + register sal_uInt32 r5 __asm__("r5"); + register sal_uInt32 r6 __asm__("r6"); + register sal_uInt32 r7 __asm__("r7"); + register sal_uInt32 r8 __asm__("r8"); + register sal_uInt32 r9 __asm__("r9"); + register sal_uInt32 r10 __asm__("r10"); + + (*ptr)(r3, r4, r5, r6, r7, r8, r9, r10); + + __asm__ __volatile__ ( + "mr %0, 3\n\t" + "mr %1, 4\n\t" +#ifndef __NO_FPRS__ + "fmr %2, 1\n\t" + : "=r" (iret), "=r" (iret2), "=f" (dret) +#else + : "=r" (iret), "=r" (iret2) +#endif + : ); + + switch( eReturnType ) + { + case typelib_TypeClass_HYPER: + case typelib_TypeClass_UNSIGNED_HYPER: + ((long*)pRegisterReturn)[0] = iret; + ((long*)pRegisterReturn)[1] = iret2; + case typelib_TypeClass_LONG: + case typelib_TypeClass_UNSIGNED_LONG: + case typelib_TypeClass_ENUM: + ((long*)pRegisterReturn)[0] = iret; + break; + case typelib_TypeClass_CHAR: + case typelib_TypeClass_SHORT: + case typelib_TypeClass_UNSIGNED_SHORT: + *(unsigned short*)pRegisterReturn = (unsigned short)iret; + break; + case typelib_TypeClass_BOOLEAN: + case typelib_TypeClass_BYTE: + *(unsigned char*)pRegisterReturn = (unsigned char)iret; + break; + case typelib_TypeClass_FLOAT: +#ifndef __NO_FPRS__ + *(float*)pRegisterReturn = (float)dret; +#else + ((unsigned int*)pRegisterReturn)[0] = iret; +#endif + break; + case typelib_TypeClass_DOUBLE: +#ifndef __NO_FPRS__ + *(double*)pRegisterReturn = dret; +#else + ((unsigned int*)pRegisterReturn)[0] = iret; + ((unsigned int*)pRegisterReturn)[1] = iret2; +#endif + break; + default: + break; + } +} + + +static void cpp_call( + bridges::cpp_uno::shared::UnoInterfaceProxy * pThis, + bridges::cpp_uno::shared::VtableSlot aVtableSlot, + typelib_TypeDescriptionReference * pReturnTypeRef, + sal_Int32 nParams, typelib_MethodParameter * pParams, + void * pUnoReturn, void * pUnoArgs[], uno_Any ** ppUnoExc ) +{ + // max space for: [complex ret ptr], values|ptr ... + char * pCppStack = + (char *)alloca( sizeof(sal_Int32) + ((nParams+2) * sizeof(sal_Int64)) ); + char * pCppStackStart = pCppStack; + + // need to know parameter types for callVirtualMethod so generate a signature string + char * pParamType = (char *) alloca(nParams+2); + char * pPT = pParamType; + + // return + typelib_TypeDescription * pReturnTypeDescr = 0; + TYPELIB_DANGER_GET( &pReturnTypeDescr, pReturnTypeRef ); + // assert(pReturnTypeDescr); + + void * pCppReturn = 0; // if != 0 && != pUnoReturn, needs reconversion + + if (pReturnTypeDescr) + { + if (bridges::cpp_uno::shared::isSimpleType( pReturnTypeDescr )) + { + pCppReturn = pUnoReturn; // direct way for simple types + } + else + { + // complex return via ptr + pCppReturn = *(void **)pCppStack = + (bridges::cpp_uno::shared::relatesToInterfaceType( pReturnTypeDescr ) + ? alloca( pReturnTypeDescr->nSize ): pUnoReturn); // direct way + *pPT++ = 'I'; //signify that a complex return type on stack + pCppStack += sizeof(void *); + } + } + // push this + void* pAdjustedThisPtr = reinterpret_cast< void **>(pThis->getCppI()) + aVtableSlot.offset; + *(void**)pCppStack = pAdjustedThisPtr; + pCppStack += sizeof( void* ); + *pPT++ = 'I'; + + // stack space + // static_assert(sizeof(void *) == sizeof(sal_Int32), "### unexpected size!"); + // args + void ** pCppArgs = (void **)alloca( 3 * sizeof(void *) * nParams ); + // indices of values this have to be converted (interface conversion cpp<=>uno) + sal_Int32 * pTempIndices = (sal_Int32 *)(pCppArgs + nParams); + // type descriptions for reconversions + typelib_TypeDescription ** ppTempParamTypeDescr = (typelib_TypeDescription **)(pCppArgs + (2 * 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 )) + { + uno_copyAndConvertData( pCppArgs[nPos] = pCppStack, pUnoArgs[nPos], pParamTypeDescr, + pThis->getBridge()->getUno2Cpp() ); + + switch (pParamTypeDescr->eTypeClass) + { + + // we need to know type of each param so that we know whether to use + // gpr or fpr to pass in parameters: + // Key: I - int, long, pointer, etc means pass in gpr + // B - byte value passed in gpr + // S - short value passed in gpr + // F - float value pass in fpr + // D - double value pass in fpr + // H - long long int pass in proper pairs of gpr (3,4) (5,6), etc + // X - indicates end of parameter description string + + case typelib_TypeClass_LONG: + case typelib_TypeClass_UNSIGNED_LONG: + case typelib_TypeClass_ENUM: + *pPT++ = 'I'; + break; + case typelib_TypeClass_SHORT: + case typelib_TypeClass_CHAR: + case typelib_TypeClass_UNSIGNED_SHORT: + *pPT++ = 'S'; + break; + case typelib_TypeClass_BOOLEAN: + case typelib_TypeClass_BYTE: + *pPT++ = 'B'; + break; + case typelib_TypeClass_FLOAT: + *pPT++ = 'F'; + break; + case typelib_TypeClass_DOUBLE: + *pPT++ = 'D'; + pCppStack += sizeof(sal_Int32); // extra long + break; + case typelib_TypeClass_HYPER: + case typelib_TypeClass_UNSIGNED_HYPER: + *pPT++ = 'H'; + pCppStack += sizeof(sal_Int32); // extra long + default: + break; + } + + // no longer needed + TYPELIB_DANGER_RELEASE( pParamTypeDescr ); + } + else // ptr to complex value | ref + { + if (! rParam.bIn) // is pure out + { + // cpp out is constructed mem, uno out is not! + uno_constructData( + *(void **)pCppStack = pCppArgs[nPos] = alloca( pParamTypeDescr->nSize ), + pParamTypeDescr ); + pTempIndices[nTempIndices] = nPos; // default constructed for cpp call + // will be released at reconversion + ppTempParamTypeDescr[nTempIndices++] = pParamTypeDescr; + } + // is in/inout + else if (bridges::cpp_uno::shared::relatesToInterfaceType( pParamTypeDescr )) + { + uno_copyAndConvertData( + *(void **)pCppStack = pCppArgs[nPos] = alloca( pParamTypeDescr->nSize ), + pUnoArgs[nPos], pParamTypeDescr, + pThis->getBridge()->getUno2Cpp() ); + + pTempIndices[nTempIndices] = nPos; // has to be reconverted + // will be released at reconversion + ppTempParamTypeDescr[nTempIndices++] = pParamTypeDescr; + } + else // direct way + { + *(void **)pCppStack = pCppArgs[nPos] = pUnoArgs[nPos]; + // no longer needed + TYPELIB_DANGER_RELEASE( pParamTypeDescr ); + } + // KBH: FIXME: is this the right way to pass these + *pPT++='I'; + } + pCppStack += sizeof(sal_Int32); // standard parameter length + } + + // terminate the signature string + *pPT++='X'; + *pPT=0; + + try + { + assert( !( (pCppStack - pCppStackStart ) & 3) && "UNALIGNED STACK !!! (Please DO panic)"); + try { + callVirtualMethod( + pAdjustedThisPtr, aVtableSlot.index, + pCppReturn, pReturnTypeDescr->eTypeClass, pParamType, + (sal_Int32 *)pCppStackStart, (pCppStack - pCppStackStart) / sizeof(sal_Int32) ); + } catch (css::uno::Exception &) { + throw; + } catch (std::exception & e) { + throw css::uno::RuntimeException( + "C++ code threw " + o3tl::runtimeToOUString(typeid(e).name()) + ": " + + o3tl::runtimeToOUString(e.what())); + } catch (...) { + throw css::uno::RuntimeException("C++ code threw unknown exception"); + } + // NO exception occurred... + *ppUnoExc = 0; + + // reconvert temporary params + for ( ; nTempIndices--; ) + { + sal_Int32 nIndex = pTempIndices[nTempIndices]; + typelib_TypeDescription * pParamTypeDescr = ppTempParamTypeDescr[nTempIndices]; + + if (pParams[nIndex].bIn) + { + if (pParams[nIndex].bOut) // inout + { + uno_destructData( pUnoArgs[nIndex], pParamTypeDescr, 0 ); // destroy uno value + uno_copyAndConvertData( pUnoArgs[nIndex], pCppArgs[nIndex], pParamTypeDescr, + pThis->getBridge()->getCpp2Uno() ); + } + } + else // pure out + { + uno_copyAndConvertData( pUnoArgs[nIndex], pCppArgs[nIndex], pParamTypeDescr, + pThis->getBridge()->getCpp2Uno() ); + } + // destroy temp cpp param => cpp: every param was constructed + uno_destructData( pCppArgs[nIndex], pParamTypeDescr, cpp_release ); + + TYPELIB_DANGER_RELEASE( pParamTypeDescr ); + } + // return value + if (pCppReturn && pUnoReturn != pCppReturn) + { + uno_copyAndConvertData( pUnoReturn, pCppReturn, pReturnTypeDescr, + pThis->getBridge()->getCpp2Uno() ); + uno_destructData( pCppReturn, pReturnTypeDescr, cpp_release ); + } + } + catch (...) + { + // fill uno exception + CPPU_CURRENT_NAMESPACE::fillUnoException(*ppUnoExc, pThis->getBridge()->getCpp2Uno()); + + // temporary params + for ( ; nTempIndices--; ) + { + sal_Int32 nIndex = pTempIndices[nTempIndices]; + // destroy temp cpp param => cpp: every param was constructed + uno_destructData( pCppArgs[nIndex], ppTempParamTypeDescr[nTempIndices], cpp_release ); + TYPELIB_DANGER_RELEASE( ppTempParamTypeDescr[nTempIndices] ); + } + // return type + if (pReturnTypeDescr) + TYPELIB_DANGER_RELEASE( pReturnTypeDescr ); + } +} + +} + +namespace bridges::cpp_uno::shared { + +void unoInterfaceProxyDispatch( + uno_Interface * pUnoI, const typelib_TypeDescription * pMemberDescr, + void * pReturn, void * pArgs[], uno_Any ** ppException ) +{ + // is my surrogate + bridges::cpp_uno::shared::UnoInterfaceProxy * pThis + = static_cast< bridges::cpp_uno::shared::UnoInterfaceProxy *> (pUnoI); + + switch (pMemberDescr->eTypeClass) + { + case typelib_TypeClass_INTERFACE_ATTRIBUTE: + { + + VtableSlot aVtableSlot( + getVtableSlot( + reinterpret_cast< + typelib_InterfaceAttributeTypeDescription const * >( + pMemberDescr))); + + if (pReturn) + { + // dependent dispatch + cpp_call( + pThis, aVtableSlot, + ((typelib_InterfaceAttributeTypeDescription *)pMemberDescr)->pAttributeTypeRef, + 0, 0, // no params + pReturn, pArgs, ppException ); + } + else + { + // is SET + typelib_MethodParameter aParam; + aParam.pTypeRef = + ((typelib_InterfaceAttributeTypeDescription *)pMemberDescr)->pAttributeTypeRef; + aParam.bIn = sal_True; + aParam.bOut = sal_False; + + typelib_TypeDescriptionReference * pReturnTypeRef = 0; + OUString aVoidName("void"); + typelib_typedescriptionreference_new( + &pReturnTypeRef, typelib_TypeClass_VOID, aVoidName.pData ); + + // dependent dispatch + aVtableSlot.index += 1; //get then set method + cpp_call( + pThis, aVtableSlot, + pReturnTypeRef, + 1, &aParam, + pReturn, pArgs, ppException ); + + typelib_typedescriptionreference_release( pReturnTypeRef ); + } + + break; + } + case typelib_TypeClass_INTERFACE_METHOD: + { + + VtableSlot aVtableSlot( + getVtableSlot( + reinterpret_cast< + typelib_InterfaceMethodTypeDescription const * >( + pMemberDescr))); + switch (aVtableSlot.index) + { + // standard calls + case 1: // acquire uno interface + (*pUnoI->acquire)( pUnoI ); + *ppException = 0; + break; + case 2: // release uno interface + (*pUnoI->release)( pUnoI ); + *ppException = 0; + break; + case 0: // queryInterface() opt + { + typelib_TypeDescription * pTD = 0; + TYPELIB_DANGER_GET( &pTD, reinterpret_cast< Type * >( pArgs[0] )->getTypeLibType() ); + if (pTD) + { + uno_Interface * pInterface = 0; + (*pThis->pBridge->getUnoEnv()->getRegisteredInterface)( + pThis->pBridge->getUnoEnv(), + (void **)&pInterface, pThis->oid.pData, (typelib_InterfaceTypeDescription *)pTD ); + + if (pInterface) + { + ::uno_any_construct( + reinterpret_cast< uno_Any * >( pReturn ), + &pInterface, pTD, 0 ); + (*pInterface->release)( pInterface ); + TYPELIB_DANGER_RELEASE( pTD ); + *ppException = 0; + break; + } + TYPELIB_DANGER_RELEASE( pTD ); + } + } // else perform queryInterface() + default: + // dependent dispatch + cpp_call( + pThis, aVtableSlot, + ((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->pReturnTypeRef, + ((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->nParams, + ((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->pParams, + pReturn, pArgs, ppException ); + } + break; + } + default: + { + ::com::sun::star::uno::RuntimeException aExc( + "illegal member type description!", + ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface >() ); + + Type const & rExcType = cppu::UnoType<decltype(aExc)>::get(); + // binary identical null reference + ::uno_type_any_construct( *ppException, &aExc, rExcType.getTypeLibType(), 0 ); + } + } +} + +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |