bridges/source/cpp_uno/gcc3_linux_alpha/uno2cpp.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include <sal/config.h>
  21
  22 #include <exception>
  23 #include <malloc.h>
  24 #include <typeinfo>
  25
  26 #include <com/sun/star/uno/Exception.hpp>
  27 #include <com/sun/star/uno/RuntimeException.hpp>
  28 #include <com/sun/star/uno/genfunc.hxx>
  29 #include <o3tl/runtimetooustring.hxx>
  30 #include <uno/data.h>
  31
  32 #include "bridge.hxx"
  33 #include "types.hxx"
  34 #include "unointerfaceproxy.hxx"
  35 #include "vtables.hxx"
  36
  37 #include "share.hxx"
  38
  39 #include <stdio.h>
  40 #include <string.h>
  41
  42
  43 using namespace ::com::sun::star::uno;
  44
  45 void MapReturn(long r0, typelib_TypeClass eTypeClass, sal_uInt64* pRegisterReturn)
  46 {
  47     register float fret asm("$f0");
  48     register double dret asm("$f0");
  49
  50 #if OSL_DEBUG_LEVEL > 2
  51     fprintf(stderr,"Mapping Return with %lx %ld %f\n", r0, r0, dret);
  52 #endif
  53     switch (eTypeClass)
  54     {
  55     case typelib_TypeClass_HYPER:
  56     case typelib_TypeClass_UNSIGNED_HYPER:
  57             *pRegisterReturn = r0;
  58             break;
  59     case typelib_TypeClass_LONG:
  60     case typelib_TypeClass_UNSIGNED_LONG:
  61     case typelib_TypeClass_ENUM:
  62             *(unsigned int*)pRegisterReturn = (unsigned int)r0;
  63             break;
  64     case typelib_TypeClass_CHAR:
  65     case typelib_TypeClass_SHORT:
  66     case typelib_TypeClass_UNSIGNED_SHORT:
  67             *(unsigned short*)pRegisterReturn = (unsigned short)r0;
  68             break;
  69     case typelib_TypeClass_BOOLEAN:
  70     case typelib_TypeClass_BYTE:
  71             *(unsigned char*)pRegisterReturn = (unsigned char)r0;
  72             break;
  73     case typelib_TypeClass_FLOAT:
  74             *reinterpret_cast<float *>( pRegisterReturn ) = fret;
  75             break;
  76     case typelib_TypeClass_DOUBLE:
  77             *reinterpret_cast<double *>( pRegisterReturn ) = dret;
  78             break;
  79     default:
  80             break;
  81     }
  82 #if OSL_DEBUG_LEVEL > 2
  83     fprintf(stderr, "end of MapReturn with %x\n", pRegisterReturn ? *pRegisterReturn : 0);
  84 #endif
  85 }
  86
  87 #define INSERT_FLOAT( pSV, nr, pFPR, pDS ) \
  88     { \
  89         if ( nr < axp::MAX_WORDS_IN_REGS ) \
  90         { \
  91                 pFPR[nr++] = *reinterpret_cast<float *>( pSV ); \
  92         } \
  93         else \
  94                 *pDS++ = *reinterpret_cast<sal_uInt64 *>( pSV ); \
  95     }
  96
  97 #define INSERT_DOUBLE( pSV, nr, pFPR, pDS ) \
  98         if ( nr < axp::MAX_WORDS_IN_REGS ) \
  99                 pFPR[nr++] = *reinterpret_cast<double *>( pSV ); \
 100         else \
 101                 *pDS++ = *reinterpret_cast<sal_uInt64 *>( pSV ); // verbatim!
 102
 103 #define INSERT_INT64( pSV, nr, pGPR, pDS ) \
 104         if ( nr < axp::MAX_WORDS_IN_REGS ) \
 105                 pGPR[nr++] = *reinterpret_cast<sal_uInt64 *>( pSV ); \
 106         else \
 107                 *pDS++ = *reinterpret_cast<sal_uInt64 *>( pSV );
 108
 109 #define INSERT_INT32( pSV, nr, pGPR, pDS ) \
 110         if ( nr < axp::MAX_WORDS_IN_REGS ) \
 111                 pGPR[nr++] = *reinterpret_cast<sal_uInt32 *>( pSV ); \
 112         else \
 113                 *pDS++ = *reinterpret_cast<sal_uInt32 *>( pSV );
 114
 115 #define INSERT_INT16( pSV, nr, pGPR, pDS ) \
 116         if ( nr < axp::MAX_WORDS_IN_REGS ) \
 117                 pGPR[nr++] = *reinterpret_cast<sal_uInt16 *>( pSV ); \
 118         else \
 119                 *pDS++ = *reinterpret_cast<sal_uInt16 *>( pSV );
 120
 121 #define INSERT_INT8( pSV, nr, pGPR, pDS ) \
 122         if ( nr < axp::MAX_WORDS_IN_REGS ) \
 123                 pGPR[nr++] = *reinterpret_cast<sal_uInt8 *>( pSV ); \
 124         else \
 125                 *pDS++ = *reinterpret_cast<sal_uInt8 *>( pSV );
 126
 127 namespace
 128 {
 129
 130 void callVirtualMethod(
 131     void * pThis, sal_Int32 nVtableIndex,
 132     void * pRegisterReturn, typelib_TypeDescription * pReturnTypeDescr,
 133     sal_uInt64 *pStack, sal_uInt32 nStack,
 134     sal_uInt64 *pGPR, sal_uInt32 nGPR,
 135     double *pFPR, sal_uInt32 nFPR)
 136 {
 137     // Should not happen, but...
 138     if ( nFPR > axp::MAX_SSE_REGS )
 139         nFPR = axp::MAX_SSE_REGS;
 140     if ( nGPR > axp::MAX_GPR_REGS )
 141         nGPR = axp::MAX_GPR_REGS;
 142
 143 #if OSL_DEBUG_LEVEL > 2
 144         // Let's figure out what is really going on here
 145         {
 146             fprintf( stderr, "= nStack is %d\n", nStack );
 147             fprintf( stderr, "= callVirtualMethod() =\nGPR's (%d): ", nGPR );
 148             for ( unsigned int i = 0; i < nGPR; ++i )
 149                 fprintf( stderr, "0x%lx, ", pGPR[i] );
 150             fprintf( stderr, "\nFPR's (%d): ", nFPR );
 151             for ( unsigned int i = 0; i < nFPR; ++i )
 152                 fprintf( stderr, "0x%lx (%f), ", pFPR[i], pFPR[i] );
 153             fprintf( stderr, "\nStack (%d): ", nStack );
 154             for ( unsigned int i = 0; i < nStack; ++i )
 155                 fprintf( stderr, "0x%lx, ", pStack[i] );
 156             fprintf( stderr, "\n" );
 157             fprintf( stderr, "pRegisterReturn is %p\n", pRegisterReturn);
 158         }
 159 #endif
 160
 161     // Load parameters to stack, if necessary
 162     // Stack, if used, must be 8-bytes aligned
 163     sal_uInt64 *stack = (sal_uInt64 *) __builtin_alloca( nStack * 8 );
 164     memcpy( stack, pStack, nStack * 8 );
 165
 166     // To get pointer to method
 167     // a) get the address of the vtable
 168     sal_uInt64 pMethod = *((sal_uInt64 *)pThis);
 169     // b) get the address from the vtable entry at offset
 170     pMethod += 8 * nVtableIndex;
 171     pMethod = *((sal_uInt64 *)pMethod);
 172
 173     typedef void (* FunctionCall )( sal_uInt64, sal_uInt64, sal_uInt64, sal_uInt64, sal_uInt64, sal_uInt64 );
 174     FunctionCall pFunc = (FunctionCall)pMethod;
 175
 176     switch (nFPR) //deliberate fall through
 177     {
 178         case 6:
 179             asm volatile("ldt $f16,%0" :: "m"(pFPR[5]) : "$f16");
 180         case 5:
 181             asm volatile("ldt $f17,%0" :: "m"(pFPR[4]) : "$f17");
 182         case 4:
 183             asm volatile("ldt $f18,%0" :: "m"(pFPR[3]) : "$f18");
 184         case 3:
 185             asm volatile("ldt $f19,%0" :: "m"(pFPR[2]) : "$f19");
 186         case 2:
 187             asm volatile("ldt $f20,%0" :: "m"(pFPR[1]) : "$f20");
 188         case 1:
 189             asm volatile("ldt $f21,%0" :: "m"(pFPR[0]) : "$f21");
 190         default:
 191             break;
 192     }
 193
 194     (*pFunc)(pGPR[0], pGPR[1], pGPR[2], pGPR[3], pGPR[4], pGPR[5]);
 195     register sal_uInt64 r0 __asm__("$0");
 196     MapReturn(r0, pReturnTypeDescr->eTypeClass, (sal_uInt64*)pRegisterReturn);
 197 }
 198
 199
 200 static void cpp_call(
 201         bridges::cpp_uno::shared::UnoInterfaceProxy * pThis,
 202         bridges::cpp_uno::shared::VtableSlot  aVtableSlot,
 203         typelib_TypeDescriptionReference * pReturnTypeRef,
 204     sal_Int32 nParams, typelib_MethodParameter * pParams,
 205     void * pUnoReturn, void * pUnoArgs[], uno_Any ** ppUnoExc )
 206 {
 207     // max space for: [complex ret ptr], values|ptr ...
 208     sal_uInt64 * pStack = (sal_uInt64 *)alloca( (nParams+3) * sizeof(sal_Int64) );
 209     sal_uInt64 * pStackStart = pStack;
 210
 211     sal_uInt64 pGPR[axp::MAX_GPR_REGS];
 212     double pFPR[axp::MAX_SSE_REGS];
 213     sal_uInt32 nRegs = 0;
 214
 215     // return
 216     typelib_TypeDescription * pReturnTypeDescr = 0;
 217     TYPELIB_DANGER_GET( &pReturnTypeDescr, pReturnTypeRef );
 218     assert(pReturnTypeDescr);
 219
 220     void * pCppReturn = 0; // if != 0 && != pUnoReturn, needs reconversion
 221
 222     if (pReturnTypeDescr)
 223     {
 224         if (bridges::cpp_uno::shared::isSimpleType( pReturnTypeDescr ))
 225         {
 226             pCppReturn = pUnoReturn; // direct way for simple types
 227         }
 228         else
 229         {
 230             // complex return via ptr
 231             pCppReturn = (bridges::cpp_uno::shared::relatesToInterfaceType( pReturnTypeDescr )
 232                                                 ? alloca( pReturnTypeDescr->nSize )
 233                                                 : pUnoReturn); // direct way
 234             INSERT_INT64( &pCppReturn, nRegs, pGPR, pStack );
 235         }
 236     }
 237         // push "this" pointer
 238     void * pAdjustedThisPtr = reinterpret_cast< void ** >( pThis->getCppI() ) + aVtableSlot.offset;
 239
 240     INSERT_INT64( &pAdjustedThisPtr, nRegs, pGPR, pStack );
 241
 242     // stack space
 243     static_assert(sizeof(void *) == sizeof(sal_Int64), "### unexpected size!");
 244     // args
 245     void ** pCppArgs  = (void **)alloca( 3 * sizeof(void *) * nParams );
 246     // indices of values this have to be converted (interface conversion cpp<=>uno)
 247     sal_Int32 * pTempIndices = (sal_Int32 *)(pCppArgs + nParams);
 248     // type descriptions for reconversions
 249     typelib_TypeDescription ** ppTempParamTypeDescr = (typelib_TypeDescription **)(pCppArgs + (2 * nParams));
 250
 251     sal_Int32 nTempIndices   = 0;
 252
 253     for ( sal_Int32 nPos = 0; nPos < nParams; ++nPos )
 254     {
 255         const typelib_MethodParameter & rParam = pParams[nPos];
 256         typelib_TypeDescription * pParamTypeDescr = 0;
 257         TYPELIB_DANGER_GET( &pParamTypeDescr, rParam.pTypeRef );
 258
 259         if (!rParam.bOut && bridges::cpp_uno::shared::isSimpleType( pParamTypeDescr ))
 260         {
 261             uno_copyAndConvertData( pCppArgs[nPos] = alloca( 8 ), pUnoArgs[nPos], pParamTypeDescr,
 262                                     pThis->getBridge()->getUno2Cpp() );
 263
 264             switch (pParamTypeDescr->eTypeClass)
 265             {
 266                 case typelib_TypeClass_HYPER:
 267                 case typelib_TypeClass_UNSIGNED_HYPER:
 268                     INSERT_INT64( pCppArgs[nPos], nRegs, pGPR, pStack );
 269                     break;
 270                 case typelib_TypeClass_LONG:
 271                 case typelib_TypeClass_UNSIGNED_LONG:
 272                 case typelib_TypeClass_ENUM:
 273                     INSERT_INT32( pCppArgs[nPos], nRegs, pGPR, pStack );
 274                     break;
 275                 case typelib_TypeClass_SHORT:
 276                 case typelib_TypeClass_CHAR:
 277                 case typelib_TypeClass_UNSIGNED_SHORT:
 278                     INSERT_INT16( pCppArgs[nPos], nRegs, pGPR, pStack );
 279                     break;
 280                 case typelib_TypeClass_BOOLEAN:
 281                 case typelib_TypeClass_BYTE:
 282                     INSERT_INT8( pCppArgs[nPos], nRegs, pGPR, pStack );
 283                     break;
 284                 case typelib_TypeClass_FLOAT:
 285                     INSERT_FLOAT( pCppArgs[nPos], nRegs, pFPR, pStack );
 286                     break;
 287                 case typelib_TypeClass_DOUBLE:
 288                     INSERT_DOUBLE( pCppArgs[nPos], nRegs, pFPR, pStack );
 289                     break;
 290                 default:
 291                     break;
 292             }
 293
 294             // no longer needed
 295             TYPELIB_DANGER_RELEASE( pParamTypeDescr );
 296         }
 297         else // ptr to complex value | ref
 298         {
 299             if (! rParam.bIn) // is pure out
 300             {
 301                 // cpp out is constructed mem, uno out is not!
 302                 uno_constructData(
 303                     pCppArgs[nPos] = alloca( pParamTypeDescr->nSize ),
 304                     pParamTypeDescr );
 305                 pTempIndices[nTempIndices] = nPos; // default constructed for cpp call
 306                 // will be released at reconversion
 307                 ppTempParamTypeDescr[nTempIndices++] = pParamTypeDescr;
 308             }
 309             // is in/inout
 310             else if (bridges::cpp_uno::shared::relatesToInterfaceType( pParamTypeDescr ))
 311             {
 312                 uno_copyAndConvertData(
 313                     pCppArgs[nPos] = alloca( pParamTypeDescr->nSize ),
 314                     pUnoArgs[nPos], pParamTypeDescr, pThis->getBridge()->getUno2Cpp() );
 315
 316                 pTempIndices[nTempIndices] = nPos; // has to be reconverted
 317                 // will be released at reconversion
 318                 ppTempParamTypeDescr[nTempIndices++] = pParamTypeDescr;
 319             }
 320             else // direct way
 321             {
 322                 pCppArgs[nPos] = pUnoArgs[nPos];
 323                 // no longer needed
 324                 TYPELIB_DANGER_RELEASE( pParamTypeDescr );
 325             }
 326             INSERT_INT64( &(pCppArgs[nPos]), nRegs, pGPR, pStack );
 327         }
 328     }
 329
 330     try
 331     {
 332         try {
 333             callVirtualMethod(
 334                 pAdjustedThisPtr, aVtableSlot.index,
 335                 pCppReturn, pReturnTypeDescr,
 336                 pStackStart, (pStack - pStackStart),
 337                 pGPR, nRegs,
 338                 pFPR, nRegs );
 339         } catch (css::uno::Exception &) {
 340             throw;
 341         } catch (std::exception & e) {
 342             throw css::uno::RuntimeException(
 343                 "C++ code threw " + o3tl::runtimeToOUString(typeid(e).name()) + ": "
 344                 + o3tl::runtimeToOUString(e.what()));
 345         } catch (...) {
 346             throw css::uno::RuntimeException("C++ code threw unknown exception");
 347         }
 348         // NO exception occurred...
 349         *ppUnoExc = 0;
 350
 351         // reconvert temporary params
 352         for ( ; nTempIndices--; )
 353         {
 354             sal_Int32 nIndex = pTempIndices[nTempIndices];
 355             typelib_TypeDescription * pParamTypeDescr = ppTempParamTypeDescr[nTempIndices];
 356
 357             if (pParams[nIndex].bIn)
 358             {
 359                 if (pParams[nIndex].bOut) // inout
 360                 {
 361                     uno_destructData( pUnoArgs[nIndex], pParamTypeDescr, 0 ); // destroy uno value
 362                     uno_copyAndConvertData( pUnoArgs[nIndex], pCppArgs[nIndex], pParamTypeDescr,
 363                                             pThis->getBridge()->getCpp2Uno() );
 364                 }
 365             }
 366             else // pure out
 367             {
 368                 uno_copyAndConvertData( pUnoArgs[nIndex], pCppArgs[nIndex], pParamTypeDescr,
 369                                         pThis->getBridge()->getCpp2Uno() );
 370             }
 371             // destroy temp cpp param => cpp: every param was constructed
 372             uno_destructData( pCppArgs[nIndex], pParamTypeDescr, cpp_release );
 373
 374             TYPELIB_DANGER_RELEASE( pParamTypeDescr );
 375         }
 376         // return value
 377         if (pCppReturn && pUnoReturn != pCppReturn)
 378         {
 379             uno_copyAndConvertData( pUnoReturn, pCppReturn, pReturnTypeDescr,
 380                                     pThis->getBridge()->getCpp2Uno() );
 381             uno_destructData( pCppReturn, pReturnTypeDescr, cpp_release );
 382         }
 383     }
 384     catch (...)
 385     {
 386         // fill uno exception
 387         CPPU_CURRENT_NAMESPACE::fillUnoException(*ppUnoExc, pThis->getBridge()->getCpp2Uno());
 388
 389
 390         // temporary params
 391         for ( ; nTempIndices--; )
 392         {
 393             sal_Int32 nIndex = pTempIndices[nTempIndices];
 394             // destroy temp cpp param => cpp: every param was constructed
 395             uno_destructData( pCppArgs[nIndex], ppTempParamTypeDescr[nTempIndices], cpp_release );
 396             TYPELIB_DANGER_RELEASE( ppTempParamTypeDescr[nTempIndices] );
 397         }
 398         // return type
 399         if (pReturnTypeDescr)
 400             TYPELIB_DANGER_RELEASE( pReturnTypeDescr );
 401     }
 402 }
 403 }
 404
 405 namespace bridges::cpp_uno::shared {
 406
 407 void unoInterfaceProxyDispatch(
 408     uno_Interface * pUnoI, const typelib_TypeDescription * pMemberDescr,
 409     void * pReturn, void * pArgs[], uno_Any ** ppException )
 410 {
 411 #if OSL_DEBUG_LEVEL > 2
 412     fprintf(stderr, "unoInterfaceProxyDispatch\n");
 413 #endif
 414
 415
 416     // is my surrogate
 417     bridges::cpp_uno::shared::UnoInterfaceProxy * pThis
 418             = static_cast< bridges::cpp_uno::shared::UnoInterfaceProxy *> (pUnoI);
 419
 420     switch (pMemberDescr->eTypeClass)
 421     {
 422     case typelib_TypeClass_INTERFACE_ATTRIBUTE:
 423     {
 424
 425         VtableSlot aVtableSlot(
 426             getVtableSlot(
 427                 reinterpret_cast<
 428                     typelib_InterfaceAttributeTypeDescription const * >(
 429                         pMemberDescr)));
 430
 431         if (pReturn)
 432         {
 433             // dependent dispatch
 434             cpp_call(
 435                 pThis, aVtableSlot,
 436                 ((typelib_InterfaceAttributeTypeDescription *)pMemberDescr)->pAttributeTypeRef,
 437                 0, 0, // no params
 438                 pReturn, pArgs, ppException );
 439         }
 440         else
 441         {
 442             // is SET
 443             typelib_MethodParameter aParam;
 444             aParam.pTypeRef =
 445                 ((typelib_InterfaceAttributeTypeDescription *)pMemberDescr)->pAttributeTypeRef;
 446             aParam.bIn      = sal_True;
 447             aParam.bOut     = sal_False;
 448
 449             typelib_TypeDescriptionReference * pReturnTypeRef = 0;
 450             OUString aVoidName("void");
 451             typelib_typedescriptionreference_new(
 452                 &pReturnTypeRef, typelib_TypeClass_VOID, aVoidName.pData );
 453
 454             // dependent dispatch
 455                         aVtableSlot.index += 1; //get then set method
 456             cpp_call(
 457                 pThis, aVtableSlot,
 458                 pReturnTypeRef,
 459                 1, &aParam,
 460                 pReturn, pArgs, ppException );
 461
 462             typelib_typedescriptionreference_release( pReturnTypeRef );
 463         }
 464
 465         break;
 466     }
 467     case typelib_TypeClass_INTERFACE_METHOD:
 468     {
 469
 470         VtableSlot aVtableSlot(
 471             getVtableSlot(
 472                 reinterpret_cast<
 473                     typelib_InterfaceMethodTypeDescription const * >(
 474                         pMemberDescr)));
 475         switch (aVtableSlot.index)
 476         {
 477             // standard calls
 478         case 1: // acquire uno interface
 479             (*pUnoI->acquire)( pUnoI );
 480             *ppException = 0;
 481             break;
 482         case 2: // release uno interface
 483             (*pUnoI->release)( pUnoI );
 484             *ppException = 0;
 485             break;
 486         case 0: // queryInterface() opt
 487         {
 488             typelib_TypeDescription * pTD = 0;
 489             TYPELIB_DANGER_GET( &pTD, reinterpret_cast< Type * >( pArgs[0] )->getTypeLibType() );
 490             if (pTD)
 491             {
 492                 uno_Interface * pInterface = 0;
 493                 (*pThis->pBridge->getUnoEnv()->getRegisteredInterface)(
 494                     pThis->pBridge->getUnoEnv(),
 495                     (void **)&pInterface, pThis->oid.pData, (typelib_InterfaceTypeDescription *)pTD );
 496
 497                 if (pInterface)
 498                 {
 499                     ::uno_any_construct(
 500                         reinterpret_cast< uno_Any * >( pReturn ),
 501                         &pInterface, pTD, 0 );
 502                     (*pInterface->release)( pInterface );
 503                     TYPELIB_DANGER_RELEASE( pTD );
 504                     *ppException = 0;
 505                     break;
 506                 }
 507                 TYPELIB_DANGER_RELEASE( pTD );
 508             }
 509         } // else perform queryInterface()
 510         default:
 511             // dependent dispatch
 512             cpp_call(
 513                 pThis, aVtableSlot,
 514                 ((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->pReturnTypeRef,
 515                 ((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->nParams,
 516                 ((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->pParams,
 517                 pReturn, pArgs, ppException );
 518         }
 519         break;
 520     }
 521     default:
 522     {
 523         ::com::sun::star::uno::RuntimeException aExc(
 524             "illegal member type description!",
 525             ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface >() );
 526
 527         Type const & rExcType = cppu::UnoType<decltype(aExc)>::get();
 528         // binary identical null reference
 529         ::uno_type_any_construct( *ppException, &aExc, rExcType.getTypeLibType(), 0 );
 530     }
 531     }
 532 }
 533
 534 }
 535
 536 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */