bridges/source/cpp_uno/gcc3_macosx_intel/uno2cpp.cxx

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  30
  31 // MARKER(update_precomp.py): autogen include statement, do not remove
  32 #include "precompiled_bridges.hxx"
  33
  34 #include <stdio.h>
  35
  36 // #include <malloc.h>
  37
  38 #include <com/sun/star/uno/genfunc.hxx>
  39 #include "com/sun/star/uno/RuntimeException.hpp"
  40 #include <uno/data.h>
  41
  42 #include "bridges/cpp_uno/shared/bridge.hxx"
  43 #include "bridges/cpp_uno/shared/types.hxx"
  44 #include "bridges/cpp_uno/shared/unointerfaceproxy.hxx"
  45 #include "bridges/cpp_uno/shared/vtables.hxx"
  46
  47 #include "share.hxx"
  48
  49 using namespace ::rtl;
  50 using namespace ::com::sun::star::uno;
  51
  52 namespace
  53 {
  54
  55 //==================================================================================================
  56 // The call instruction within the asm section of callVirtualMethod may throw
  57 // exceptions.  So that the compiler handles this correctly, it is important
  58 // that (a) callVirtualMethod might call dummy_can_throw_anything (although this
  59 // never happens at runtime), which in turn can throw exceptions, and (b)
  60 // callVirtualMethod is not inlined at its call site (so that any exceptions are
  61 // caught which are thrown from the instruction calling callVirtualMethod):
  62 void callVirtualMethod(
  63     void * pAdjustedThisPtr,
  64     sal_Int32 nVtableIndex,
  65     void * pRegisterReturn,
  66     typelib_TypeDescription * pReturnTypeDescr, bool bSimpleReturn,
  67     sal_Int32 * pStackLongs,
  68     sal_Int32 nStackLongs ) __attribute__((noinline));
  69
  70 void callVirtualMethod(
  71     void * pAdjustedThisPtr,
  72     sal_Int32 nVtableIndex,
  73     void * pRegisterReturn,
  74     typelib_TypeDescription * pReturnTypeDescr, bool bSimpleReturn,
  75     sal_Int32 * pStackLongs,
  76     sal_Int32 nStackLongs )
  77 {
  78     // parameter list is mixed list of * and values
  79     // reference parameters are pointers
  80
  81     OSL_ENSURE( pStackLongs && pAdjustedThisPtr, "### null ptr!" );
  82     OSL_ENSURE( (sizeof(void *) == 4) && (sizeof(sal_Int32) == 4), "### unexpected size of int!" );
  83     OSL_ENSURE( nStackLongs && pStackLongs, "### no stack in callVirtualMethod !" );
  84
  85     // never called
  86     if (! pAdjustedThisPtr) CPPU_CURRENT_NAMESPACE::dummy_can_throw_anything("xxx"); // address something
  87
  88     volatile long edx = 0, eax = 0; // for register returns
  89     void * stackptr;
  90     asm volatile (
  91         "mov   %%esp, %6\n\t"
  92         "mov   %0, %%eax\n\t"
  93         "mov   %%eax, %%edx\n\t"
  94                 // stack padding to keep stack aligned:
  95         "shl   $2, %%eax\n\t"
  96         "neg   %%eax\n\t"
  97         "add   %%esp, %%eax\n\t"
  98         "and   $0xf, %%eax\n\t"
  99         "sub   %%eax, %%esp\n\t"
 100                 // copy:
 101         "mov   %%edx, %%eax\n\t"
 102         "dec   %%edx\n\t"
 103         "shl   $2, %%edx\n\t"
 104         "add   %1, %%edx\n"
 105         "Lcopy:\n\t"
 106         "pushl 0(%%edx)\n\t"
 107         "sub   $4, %%edx\n\t"
 108         "dec   %%eax\n\t"
 109         "jne   Lcopy\n\t"
 110         // do the actual call
 111         "mov   %2, %%edx\n\t"
 112         "mov   0(%%edx), %%edx\n\t"
 113         "mov   %3, %%eax\n\t"
 114         "shl   $2, %%eax\n\t"
 115         "add   %%eax, %%edx\n\t"
 116         "mov   0(%%edx), %%edx\n\t"
 117         "call  *%%edx\n\t"
 118         // save return registers
 119          "mov   %%eax, %4\n\t"
 120          "mov   %%edx, %5\n\t"
 121         // cleanup stack
 122         "mov   %6, %%esp\n\t"
 123         :
 124         : "m"(nStackLongs), "m"(pStackLongs), "m"(pAdjustedThisPtr),
 125           "m"(nVtableIndex), "m"(eax), "m"(edx), "m"(stackptr)
 126         : "eax", "edx" );
 127     switch( pReturnTypeDescr->eTypeClass )
 128     {
 129     case typelib_TypeClass_VOID:
 130         break;
 131     case typelib_TypeClass_HYPER:
 132     case typelib_TypeClass_UNSIGNED_HYPER:
 133         ((long*)pRegisterReturn)[1] = edx;
 134     case typelib_TypeClass_LONG:
 135     case typelib_TypeClass_UNSIGNED_LONG:
 136     case typelib_TypeClass_CHAR:
 137     case typelib_TypeClass_ENUM:
 138         ((long*)pRegisterReturn)[0] = eax;
 139         break;
 140     case typelib_TypeClass_SHORT:
 141     case typelib_TypeClass_UNSIGNED_SHORT:
 142         *(unsigned short*)pRegisterReturn = eax;
 143         break;
 144     case typelib_TypeClass_BOOLEAN:
 145     case typelib_TypeClass_BYTE:
 146         *(unsigned char*)pRegisterReturn = eax;
 147         break;
 148     case typelib_TypeClass_FLOAT:
 149         asm ( "fstps %0" : : "m"(*(char *)pRegisterReturn) );
 150         break;
 151     case typelib_TypeClass_DOUBLE:
 152         asm ( "fstpl %0\n\t" : : "m"(*(char *)pRegisterReturn) );
 153         break;
 154     default: {
 155         sal_Int32 const nRetSize = pReturnTypeDescr->nSize;
 156         if (bSimpleReturn && nRetSize <= 8 && nRetSize > 0) {
 157             if (nRetSize > 4)
 158                 static_cast<long *>(pRegisterReturn)[1] = edx;
 159             static_cast<long *>(pRegisterReturn)[0] = eax;
 160         }
 161         break;
 162     }
 163     }
 164 }
 165
 166 //==================================================================================================
 167 static void cpp_call(
 168     bridges::cpp_uno::shared::UnoInterfaceProxy * pThis,
 169     bridges::cpp_uno::shared::VtableSlot aVtableSlot,
 170     typelib_TypeDescriptionReference * pReturnTypeRef,
 171     sal_Int32 nParams, typelib_MethodParameter * pParams,
 172     void * pUnoReturn, void * pUnoArgs[], uno_Any ** ppUnoExc )
 173 {
 174       // max space for: [complex ret ptr], values|ptr ...
 175       char * pCppStack          =
 176           (char *)alloca( sizeof(sal_Int32) + ((nParams+2) * sizeof(sal_Int64)) );
 177       char * pCppStackStart     = pCppStack;
 178
 179     // return
 180     typelib_TypeDescription * pReturnTypeDescr = 0;
 181     TYPELIB_DANGER_GET( &pReturnTypeDescr, pReturnTypeRef );
 182     OSL_ENSURE( pReturnTypeDescr, "### expected return type description!" );
 183
 184     void * pCppReturn = 0; // if != 0 && != pUnoReturn, needs reconversion
 185     bool bSimpleReturn = true;
 186
 187     if (pReturnTypeDescr)
 188     {
 189         bSimpleReturn = CPPU_CURRENT_NAMESPACE::isSimpleReturnType(
 190             pReturnTypeDescr);
 191         if (bSimpleReturn)
 192         {
 193             pCppReturn = pUnoReturn; // direct way for simple types
 194         }
 195         else
 196         {
 197             pCppReturn = (bridges::cpp_uno::shared::relatesToInterfaceType(
 198                               pReturnTypeDescr )
 199                           ? alloca( pReturnTypeDescr->nSize )
 200                           : pUnoReturn); // direct way
 201             // complex return via ptr
 202             *(void **)pCppStack = pCppReturn;
 203             pCppStack += sizeof(void *);
 204         }
 205     }
 206     // push this
 207     void * pAdjustedThisPtr = reinterpret_cast< void ** >(pThis->getCppI())
 208         + aVtableSlot.offset;
 209     *(void**)pCppStack = pAdjustedThisPtr;
 210     pCppStack += sizeof( void* );
 211
 212     // stack space
 213     OSL_ENSURE( sizeof(void *) == sizeof(sal_Int32), "### unexpected size!" );
 214     // args
 215     void ** pCppArgs  = (void **)alloca( 3 * sizeof(void *) * nParams );
 216     // indizes of values this have to be converted (interface conversion cpp<=>uno)
 217     sal_Int32 * pTempIndizes = (sal_Int32 *)(pCppArgs + nParams);
 218     // type descriptions for reconversions
 219     typelib_TypeDescription ** ppTempParamTypeDescr = (typelib_TypeDescription **)(pCppArgs + (2 * nParams));
 220
 221     sal_Int32 nTempIndizes   = 0;
 222
 223     for ( sal_Int32 nPos = 0; nPos < nParams; ++nPos )
 224     {
 225         const typelib_MethodParameter & rParam = pParams[nPos];
 226         typelib_TypeDescription * pParamTypeDescr = 0;
 227         TYPELIB_DANGER_GET( &pParamTypeDescr, rParam.pTypeRef );
 228
 229         if (!rParam.bOut
 230             && bridges::cpp_uno::shared::isSimpleType( pParamTypeDescr ))
 231         {
 232             uno_copyAndConvertData( pCppArgs[nPos] = pCppStack, pUnoArgs[nPos], pParamTypeDescr,
 233                                     pThis->getBridge()->getUno2Cpp() );
 234
 235             switch (pParamTypeDescr->eTypeClass)
 236             {
 237             case typelib_TypeClass_HYPER:
 238             case typelib_TypeClass_UNSIGNED_HYPER:
 239             case typelib_TypeClass_DOUBLE:
 240                 pCppStack += sizeof(sal_Int32); // extra long
 241             default:
 242                 break;
 243             }
 244             // no longer needed
 245             TYPELIB_DANGER_RELEASE( pParamTypeDescr );
 246         }
 247         else // ptr to complex value | ref
 248         {
 249             if (! rParam.bIn) // is pure out
 250             {
 251                 // cpp out is constructed mem, uno out is not!
 252                 uno_constructData(
 253                     *(void **)pCppStack = pCppArgs[nPos] = alloca( pParamTypeDescr->nSize ),
 254                     pParamTypeDescr );
 255                 pTempIndizes[nTempIndizes] = nPos; // default constructed for cpp call
 256                 // will be released at reconversion
 257                 ppTempParamTypeDescr[nTempIndizes++] = pParamTypeDescr;
 258             }
 259             // is in/inout
 260             else if (bridges::cpp_uno::shared::relatesToInterfaceType(
 261                          pParamTypeDescr ))
 262             {
 263                 uno_copyAndConvertData(
 264                     *(void **)pCppStack = pCppArgs[nPos] = alloca( pParamTypeDescr->nSize ),
 265                     pUnoArgs[nPos], pParamTypeDescr,
 266                     pThis->getBridge()->getUno2Cpp() );
 267
 268                 pTempIndizes[nTempIndizes] = nPos; // has to be reconverted
 269                 // will be released at reconversion
 270                 ppTempParamTypeDescr[nTempIndizes++] = pParamTypeDescr;
 271             }
 272             else // direct way
 273             {
 274                 *(void **)pCppStack = pCppArgs[nPos] = pUnoArgs[nPos];
 275                 // no longer needed
 276                 TYPELIB_DANGER_RELEASE( pParamTypeDescr );
 277             }
 278         }
 279         pCppStack += sizeof(sal_Int32); // standard parameter length
 280     }
 281
 282     try
 283     {
 284         OSL_ENSURE( !( (pCppStack - pCppStackStart ) & 3), "UNALIGNED STACK !!! (Please DO panic)" );
 285         callVirtualMethod(
 286             pAdjustedThisPtr, aVtableSlot.index,
 287             pCppReturn, pReturnTypeDescr, bSimpleReturn,
 288             (sal_Int32 *)pCppStackStart, (pCppStack - pCppStackStart) / sizeof(sal_Int32) );
 289         // NO exception occured...
 290         *ppUnoExc = 0;
 291
 292         // reconvert temporary params
 293         for ( ; nTempIndizes--; )
 294         {
 295             sal_Int32 nIndex = pTempIndizes[nTempIndizes];
 296             typelib_TypeDescription * pParamTypeDescr = ppTempParamTypeDescr[nTempIndizes];
 297
 298             if (pParams[nIndex].bIn)
 299             {
 300                 if (pParams[nIndex].bOut) // inout
 301                 {
 302                     uno_destructData( pUnoArgs[nIndex], pParamTypeDescr, 0 ); // destroy uno value
 303                     uno_copyAndConvertData( pUnoArgs[nIndex], pCppArgs[nIndex], pParamTypeDescr,
 304                                             pThis->getBridge()->getCpp2Uno() );
 305                 }
 306             }
 307             else // pure out
 308             {
 309                 uno_copyAndConvertData( pUnoArgs[nIndex], pCppArgs[nIndex], pParamTypeDescr,
 310                                         pThis->getBridge()->getCpp2Uno() );
 311             }
 312             // destroy temp cpp param => cpp: every param was constructed
 313             uno_destructData( pCppArgs[nIndex], pParamTypeDescr, cpp_release );
 314
 315             TYPELIB_DANGER_RELEASE( pParamTypeDescr );
 316         }
 317         // return value
 318         if (pCppReturn && pUnoReturn != pCppReturn)
 319         {
 320             uno_copyAndConvertData( pUnoReturn, pCppReturn, pReturnTypeDescr,
 321                                     pThis->getBridge()->getCpp2Uno() );
 322             uno_destructData( pCppReturn, pReturnTypeDescr, cpp_release );
 323         }
 324     }
 325      catch (...)
 326      {
 327 #if OSL_DEBUG_LEVEL > 1
 328     fprintf( stderr, "caught C++ exception\n" );
 329 #endif
 330           // fill uno exception
 331         fillUnoException( CPPU_CURRENT_NAMESPACE::__cxa_get_globals()->caughtExceptions, *ppUnoExc, pThis->getBridge()->getCpp2Uno() );
 332
 333         // temporary params
 334         for ( ; nTempIndizes--; )
 335         {
 336             sal_Int32 nIndex = pTempIndizes[nTempIndizes];
 337             // destroy temp cpp param => cpp: every param was constructed
 338             uno_destructData( pCppArgs[nIndex], ppTempParamTypeDescr[nTempIndizes], cpp_release );
 339             TYPELIB_DANGER_RELEASE( ppTempParamTypeDescr[nTempIndizes] );
 340         }
 341         // return type
 342         if (pReturnTypeDescr)
 343             TYPELIB_DANGER_RELEASE( pReturnTypeDescr );
 344     }
 345 }
 346
 347 }
 348
 349 namespace CPPU_CURRENT_NAMESPACE {
 350 bool isSimpleReturnType(typelib_TypeDescription * pTD, bool recursive)
 351 {
 352     if (bridges::cpp_uno::shared::isSimpleType( pTD ))
 353         return true;
 354     // Only structs of exactly 1, 2, 4, or 8 bytes are returned through
 355     // registers, see <http://developer.apple.com/documentation/DeveloperTools/
 356     // Conceptual/LowLevelABI/Articles/IA32.html>:
 357     if (pTD->eTypeClass == typelib_TypeClass_STRUCT &&
 358         (recursive || pTD->nSize <= 2 || pTD->nSize == 4 || pTD->nSize == 8))
 359     {
 360         typelib_CompoundTypeDescription *const pCompTD =
 361             (typelib_CompoundTypeDescription *) pTD;
 362         for ( sal_Int32 pos = pCompTD->nMembers; pos--; ) {
 363             typelib_TypeDescription * pMemberTD = 0;
 364             TYPELIB_DANGER_GET( &pMemberTD, pCompTD->ppTypeRefs[pos] );
 365             bool const b = isSimpleReturnType(pMemberTD, true);
 366             TYPELIB_DANGER_RELEASE( pMemberTD );
 367             if (! b)
 368                 return false;
 369         }
 370         return true;
 371     }
 372     return false;
 373 }
 374 }
 375
 376 //==================================================================================================
 377
 378 namespace bridges { namespace cpp_uno { namespace shared {
 379 void unoInterfaceProxyDispatch(
 380     uno_Interface * pUnoI, const typelib_TypeDescription * pMemberDescr,
 381     void * pReturn, void * pArgs[], uno_Any ** ppException )
 382 {
 383     // is my surrogate
 384     bridges::cpp_uno::shared::UnoInterfaceProxy * pThis
 385         = static_cast< bridges::cpp_uno::shared::UnoInterfaceProxy * >(pUnoI);
 386
 387     switch (pMemberDescr->eTypeClass)
 388     {
 389     case typelib_TypeClass_INTERFACE_ATTRIBUTE:
 390     {
 391         VtableSlot aVtableSlot(
 392             getVtableSlot(
 393                 reinterpret_cast<
 394                     typelib_InterfaceAttributeTypeDescription const * >(
 395                         pMemberDescr)));
 396         if (pReturn)
 397         {
 398             // dependent dispatch
 399             cpp_call(
 400                 pThis, aVtableSlot,
 401                 ((typelib_InterfaceAttributeTypeDescription *)pMemberDescr)->pAttributeTypeRef,
 402                 0, 0, // no params
 403                 pReturn, pArgs, ppException );
 404         }
 405         else
 406         {
 407             // is SET
 408             typelib_MethodParameter aParam;
 409             aParam.pTypeRef =
 410                 ((typelib_InterfaceAttributeTypeDescription *)pMemberDescr)->pAttributeTypeRef;
 411             aParam.bIn          = sal_True;
 412             aParam.bOut         = sal_False;
 413
 414             typelib_TypeDescriptionReference * pReturnTypeRef = 0;
 415             OUString aVoidName( RTL_CONSTASCII_USTRINGPARAM("void") );
 416             typelib_typedescriptionreference_new(
 417                 &pReturnTypeRef, typelib_TypeClass_VOID, aVoidName.pData );
 418
 419             // dependent dispatch
 420             aVtableSlot.index += 1; // get, then set method
 421             cpp_call(
 422                 pThis, aVtableSlot,
 423                 pReturnTypeRef,
 424                 1, &aParam,
 425                 pReturn, pArgs, ppException );
 426
 427             typelib_typedescriptionreference_release( pReturnTypeRef );
 428         }
 429
 430         break;
 431     }
 432     case typelib_TypeClass_INTERFACE_METHOD:
 433     {
 434         VtableSlot aVtableSlot(
 435             getVtableSlot(
 436                 reinterpret_cast<
 437                     typelib_InterfaceMethodTypeDescription const * >(
 438                         pMemberDescr)));
 439         switch (aVtableSlot.index)
 440         {
 441             // standard calls
 442         case 1: // acquire uno interface
 443             (*pUnoI->acquire)( pUnoI );
 444             *ppException = 0;
 445             break;
 446         case 2: // release uno interface
 447             (*pUnoI->release)( pUnoI );
 448             *ppException = 0;
 449             break;
 450         case 0: // queryInterface() opt
 451         {
 452             typelib_TypeDescription * pTD = 0;
 453             TYPELIB_DANGER_GET( &pTD, reinterpret_cast< Type * >( pArgs[0] )->getTypeLibType() );
 454             if (pTD)
 455             {
 456                 uno_Interface * pInterface = 0;
 457                 (*pThis->pBridge->getUnoEnv()->getRegisteredInterface)(
 458                     pThis->pBridge->getUnoEnv(),
 459                     (void **)&pInterface, pThis->oid.pData, (typelib_InterfaceTypeDescription *)pTD );
 460
 461                 if (pInterface)
 462                 {
 463                     ::uno_any_construct(
 464                         reinterpret_cast< uno_Any * >( pReturn ),
 465                         &pInterface, pTD, 0 );
 466                     (*pInterface->release)( pInterface );
 467                     TYPELIB_DANGER_RELEASE( pTD );
 468                     *ppException = 0;
 469                     break;
 470                 }
 471                 TYPELIB_DANGER_RELEASE( pTD );
 472             }
 473         } // else perform queryInterface()
 474         default:
 475             // dependent dispatch
 476             cpp_call(
 477                 pThis, aVtableSlot,
 478                 ((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->pReturnTypeRef,
 479                 ((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->nParams,
 480                 ((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->pParams,
 481                 pReturn, pArgs, ppException );
 482         }
 483         break;
 484     }
 485     default:
 486     {
 487         ::com::sun::star::uno::RuntimeException aExc(
 488             OUString( RTL_CONSTASCII_USTRINGPARAM("illegal member type description!") ),
 489             ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface >() );
 490
 491         Type const & rExcType = ::getCppuType( &aExc );
 492         // binary identical null reference
 493         ::uno_type_any_construct( *ppException, &aExc, rExcType.getTypeLibType(), 0 );
 494     }
 495     }
 496 }
 497
 498 } } }