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See the 18 * GNU Lesser General Public License version 3 for more details 19 * (a copy is included in the LICENSE file that accompanied this code). 20 * 21 * You should have received a copy of the GNU Lesser General Public License 22 * version 3 along with OpenOffice.org. If not, see 23 * <http://www.openoffice.org/license.html> 24 * for a copy of the LGPLv3 License. 25 * 26 ************************************************************************/ 27 28 #include <malloc.h> 29 30 #include <com/sun/star/uno/genfunc.hxx> 31 #include <uno/data.h> 32 33 #include "bridges/cpp_uno/shared/bridge.hxx" 34 #include "bridges/cpp_uno/shared/types.hxx" 35 #include "bridges/cpp_uno/shared/unointerfaceproxy.hxx" 36 #include "bridges/cpp_uno/shared/vtables.hxx" 37 38 #include "share.hxx" 39 40 //#define BRDEBUG 41 #ifdef BRDEBUG 42 #include <stdio.h> 43 #endif 44 45 46 using namespace ::rtl; 47 using namespace ::com::sun::star::uno; 48 49 namespace 50 { 51 52 53 //================================================================================================== 54 static void callVirtualMethod( 55 void * pAdjustedThisPtr, 56 sal_Int32 nVtableIndex, 57 void * pRegisterReturn, 58 typelib_TypeClass eReturnType, 59 char * pPT, 60 sal_Int32 * pStackLongs, 61 sal_Int32 /*nStackLongs*/) 62 { 63 64 // parameter list is mixed list of * and values 65 // reference parameters are pointers 66 67 unsigned long * mfunc; // actual function to be invoked 68 void (*ptr)(); 69 int gpr[4]; // storage for gpregisters, map to a0-a3 70 int off; // offset used to find function 71 int nw; // number of words mapped 72 long *p; // pointer to parameter overflow area 73 int c; // character of parameter type being decoded 74 int iret, iret2; // temporary function return values 75 76 // never called 77 if (! pAdjustedThisPtr ) CPPU_CURRENT_NAMESPACE::dummy_can_throw_anything("xxx"); // address something 78 79 #ifdef BRDEBUG 80 fprintf(stderr,"in CallVirtualMethod\n"); 81 #endif 82 83 // Because of the MIPS O32 calling conventions we could be passing 84 // parameters in both register types and on the stack. To create the 85 // stack parameter area we need we now simply allocate local 86 // variable storage param[] that is at least the size of the parameter stack 87 // (more than enough space) which we can overwrite the parameters into. 88 89 /* p = sp - 512; new sp will be p - 16, but we don't change sp 90 * at this time to avoid breaking ABI--not sure whether changing sp will break 91 * references to local variables. For the same reason, we use abosulte value. 92 */ 93 __asm__ __volatile__ ( 94 "addiu $2,$29,-512\n\t" 95 "move %0,$2\n\t" 96 :"=r"(p): : "$2","$29" ); 97 98 #ifdef BRDEBUG 99 if (nStackLongs * 4 > 512 ) 100 fprintf(stderr,"too many arguments"); 101 #endif 102 103 // now begin to load the C++ function arguments into storage 104 nw = 0; 105 106 // now we need to parse the entire signature string */ 107 // until we get the END indicator */ 108 109 // treat complex return pointer like any other parameter // 110 111 #ifdef BRDEBUG 112 fprintf(stderr,"overflow area pointer p=%p\n",p); 113 114 /* Let's figure out what is really going on here*/ 115 fprintf(stderr,"callVirtualMethod paramters string is %s\n",pPT); 116 int k = nStackLongs; 117 long * q = (long *)pStackLongs; 118 while (k > 0) { 119 fprintf(stderr,"uno stack is: %x\n",(unsigned int)*q); 120 k--; 121 q++; 122 } 123 #endif 124 125 /* parse the argument list up to the ending ) */ 126 while (*pPT != 'X') { 127 c = *pPT; 128 switch (c) { 129 case 'D': /* type is double */ 130 /* treat the same as long long */ 131 case 'H': /* type is long long */ 132 if (nw & 1) nw++; /* note even elements gpr[] will map to 133 odd registers*/ 134 if (nw < 4) { 135 gpr[nw++] = *pStackLongs; 136 gpr[nw++] = *(pStackLongs+1); 137 } else { 138 if (((long) p) & 4) 139 p++; 140 *p++ = *pStackLongs; 141 *p++ = *(pStackLongs+1); 142 } 143 pStackLongs += 2; 144 break; 145 146 case 'S': 147 if (nw < 4) { 148 gpr[nw++] = *((unsigned short*)pStackLongs); 149 } else { 150 *p++ = *((unsigned short *)pStackLongs); 151 } 152 pStackLongs += 1; 153 break; 154 155 case 'B': 156 if (nw < 4) { 157 gpr[nw++] = *((char *)pStackLongs); 158 } else { 159 *p++ = *((char *)pStackLongs); 160 } 161 pStackLongs += 1; 162 break; 163 164 default: 165 if (nw < 4) { 166 gpr[nw++] = *pStackLongs; 167 } else { 168 *p++ = *pStackLongs; 169 } 170 pStackLongs += 1; 171 break; 172 } 173 pPT++; 174 } 175 176 /* figure out the address of the function we need to invoke */ 177 off = nVtableIndex; 178 off = off * 4; // 4 bytes per slot 179 mfunc = *((unsigned long **)pAdjustedThisPtr); // get the address of the vtable 180 mfunc = (unsigned long *)((char *)mfunc + off); // get the address from the vtable entry at offset 181 mfunc = *((unsigned long **)mfunc); // the function is stored at the address 182 ptr = (void (*)())mfunc; 183 184 #ifdef BRDEBUG 185 fprintf(stderr,"calling function %p\n",mfunc); 186 #endif 187 188 /* Set up the machine registers and invoke the function */ 189 190 __asm__ __volatile__ ( 191 "lw $4, 0(%0)\n\t" 192 "lw $5, 4(%0)\n\t" 193 "lw $6, 8(%0)\n\t" 194 "lw $7, 12(%0)\n\t" 195 : : "r" (gpr) 196 : "$4", "$5", "$6", "$7" 197 ); 198 199 __asm__ __volatile__ ("addiu $29,$29,-528\r\n":::"$29"); 200 201 (*ptr)(); 202 203 __asm__ __volatile__ ("addiu $29,$29,528\r\n":::"$29"); 204 205 __asm__ __volatile__ ( 206 "sw $2,%0 \n\t" 207 "sw $3,%1 \n\t" 208 : "=m" (iret), "=m" (iret2) : ); 209 register float fret asm("$f0"); 210 register double dret asm("$f0"); 211 212 switch( eReturnType ) 213 { 214 case typelib_TypeClass_HYPER: 215 case typelib_TypeClass_UNSIGNED_HYPER: 216 ((long*)pRegisterReturn)[1] = iret2; // fall through 217 case typelib_TypeClass_LONG: 218 case typelib_TypeClass_UNSIGNED_LONG: 219 case typelib_TypeClass_ENUM: 220 ((long*)pRegisterReturn)[0] = iret; 221 break; 222 case typelib_TypeClass_CHAR: 223 case typelib_TypeClass_SHORT: 224 case typelib_TypeClass_UNSIGNED_SHORT: 225 *(unsigned short*)pRegisterReturn = (unsigned short)iret; 226 break; 227 case typelib_TypeClass_BOOLEAN: 228 case typelib_TypeClass_BYTE: 229 *(unsigned char*)pRegisterReturn = (unsigned char)iret; 230 break; 231 case typelib_TypeClass_FLOAT: 232 *(float*)pRegisterReturn = fret; 233 break; 234 case typelib_TypeClass_DOUBLE: 235 *(double*)pRegisterReturn = dret; 236 break; 237 default: 238 break; 239 } 240 } 241 242 243 //================================================================================================== 244 static void cpp_call( 245 bridges::cpp_uno::shared::UnoInterfaceProxy * pThis, 246 bridges::cpp_uno::shared::VtableSlot aVtableSlot, 247 typelib_TypeDescriptionReference * pReturnTypeRef, 248 sal_Int32 nParams, typelib_MethodParameter * pParams, 249 void * pUnoReturn, void * pUnoArgs[], uno_Any ** ppUnoExc ) 250 { 251 // max space for: [complex ret ptr], values|ptr ... 252 char * pCppStack = 253 (char *)alloca( sizeof(sal_Int32) + ((nParams+2) * sizeof(sal_Int64)) ); 254 char * pCppStackStart = pCppStack; 255 256 // need to know parameter types for callVirtualMethod so generate a signature string 257 char * pParamType = (char *) alloca(nParams+2); 258 char * pPT = pParamType; 259 260 #ifdef BRDEBUG 261 fprintf(stderr,"in cpp_call\n"); 262 #endif 263 264 // return 265 typelib_TypeDescription * pReturnTypeDescr = 0; 266 TYPELIB_DANGER_GET( &pReturnTypeDescr, pReturnTypeRef ); 267 // OSL_ENSURE( pReturnTypeDescr, "### expected return type description!" ); 268 269 void * pCppReturn = 0; // if != 0 && != pUnoReturn, needs reconversion 270 271 if (pReturnTypeDescr) 272 { 273 if (bridges::cpp_uno::shared::isSimpleType( pReturnTypeDescr )) 274 { 275 pCppReturn = pUnoReturn; // direct way for simple types 276 } 277 else 278 { 279 // complex return via ptr 280 pCppReturn = *(void **)pCppStack = 281 (bridges::cpp_uno::shared::relatesToInterfaceType( pReturnTypeDescr ) 282 ? alloca( pReturnTypeDescr->nSize ): pUnoReturn); // direct way 283 *pPT++ = 'I'; //signify that a complex return type on stack 284 pCppStack += sizeof(void *); 285 } 286 } 287 // push this 288 void* pAdjustedThisPtr = reinterpret_cast< void **>(pThis->getCppI()) + aVtableSlot.offset; 289 *(void**)pCppStack = pAdjustedThisPtr; 290 pCppStack += sizeof( void* ); 291 *pPT++ = 'I'; 292 293 // stack space 294 // OSL_ENSURE( sizeof(void *) == sizeof(sal_Int32), "### unexpected size!" ); 295 // args 296 void ** pCppArgs = (void **)alloca( 3 * sizeof(void *) * nParams ); 297 // indizes of values this have to be converted (interface conversion cpp<=>uno) 298 sal_Int32 * pTempIndizes = (sal_Int32 *)(pCppArgs + nParams); 299 // type descriptions for reconversions 300 typelib_TypeDescription ** ppTempParamTypeDescr = (typelib_TypeDescription **)(pCppArgs + (2 * nParams)); 301 302 sal_Int32 nTempIndizes = 0; 303 304 for ( sal_Int32 nPos = 0; nPos < nParams; ++nPos ) 305 { 306 const typelib_MethodParameter & rParam = pParams[nPos]; 307 typelib_TypeDescription * pParamTypeDescr = 0; 308 TYPELIB_DANGER_GET( &pParamTypeDescr, rParam.pTypeRef ); 309 310 if (!rParam.bOut && bridges::cpp_uno::shared::isSimpleType( pParamTypeDescr )) 311 { 312 uno_copyAndConvertData( pCppArgs[nPos] = pCppStack, pUnoArgs[nPos], pParamTypeDescr, 313 pThis->getBridge()->getUno2Cpp() ); 314 315 switch (pParamTypeDescr->eTypeClass) 316 { 317 318 // we need to know type of each param so that we know whether to use 319 // gpr or fpr to pass in parameters: 320 // Key: I - int, long, pointer, etc means pass in gpr 321 // B - byte value passed in gpr 322 // S - short value passed in gpr 323 // F - float value pass in fpr 324 // D - double value pass in fpr 325 // H - long long int pass in proper pairs of gpr (3,4) (5,6), etc 326 // X - indicates end of parameter description string 327 328 case typelib_TypeClass_LONG: 329 case typelib_TypeClass_UNSIGNED_LONG: 330 case typelib_TypeClass_ENUM: 331 *pPT++ = 'I'; 332 break; 333 case typelib_TypeClass_SHORT: 334 case typelib_TypeClass_CHAR: 335 case typelib_TypeClass_UNSIGNED_SHORT: 336 *pPT++ = 'S'; 337 break; 338 case typelib_TypeClass_BOOLEAN: 339 case typelib_TypeClass_BYTE: 340 *pPT++ = 'B'; 341 break; 342 case typelib_TypeClass_FLOAT: 343 *pPT++ = 'F'; 344 break; 345 case typelib_TypeClass_DOUBLE: 346 *pPT++ = 'D'; 347 pCppStack += sizeof(sal_Int32); // extra long 348 break; 349 case typelib_TypeClass_HYPER: 350 case typelib_TypeClass_UNSIGNED_HYPER: 351 *pPT++ = 'H'; 352 pCppStack += sizeof(sal_Int32); // extra long 353 break; 354 default: 355 break; 356 } 357 358 // no longer needed 359 TYPELIB_DANGER_RELEASE( pParamTypeDescr ); 360 } 361 else // ptr to complex value | ref 362 { 363 if (! rParam.bIn) // is pure out 364 { 365 // cpp out is constructed mem, uno out is not! 366 uno_constructData( 367 *(void **)pCppStack = pCppArgs[nPos] = alloca( pParamTypeDescr->nSize ), 368 pParamTypeDescr ); 369 pTempIndizes[nTempIndizes] = nPos; // default constructed for cpp call 370 // will be released at reconversion 371 ppTempParamTypeDescr[nTempIndizes++] = pParamTypeDescr; 372 } 373 // is in/inout 374 else if (bridges::cpp_uno::shared::relatesToInterfaceType( pParamTypeDescr )) 375 { 376 uno_copyAndConvertData( 377 *(void **)pCppStack = pCppArgs[nPos] = alloca( pParamTypeDescr->nSize ), 378 pUnoArgs[nPos], pParamTypeDescr, 379 pThis->getBridge()->getUno2Cpp() ); 380 381 pTempIndizes[nTempIndizes] = nPos; // has to be reconverted 382 // will be released at reconversion 383 ppTempParamTypeDescr[nTempIndizes++] = pParamTypeDescr; 384 } 385 else // direct way 386 { 387 *(void **)pCppStack = pCppArgs[nPos] = pUnoArgs[nPos]; 388 // no longer needed 389 TYPELIB_DANGER_RELEASE( pParamTypeDescr ); 390 } 391 // KBH: FIXME: is this the right way to pass these 392 *pPT++='I'; 393 } 394 pCppStack += sizeof(sal_Int32); // standard parameter length 395 } 396 397 // terminate the signature string 398 *pPT++='X'; 399 *pPT=0; 400 401 try 402 { 403 OSL_ENSURE( !( (pCppStack - pCppStackStart ) & 3), "UNALIGNED STACK !!! (Please DO panic)" ); 404 callVirtualMethod( 405 pAdjustedThisPtr, aVtableSlot.index, 406 pCppReturn, pReturnTypeDescr->eTypeClass, pParamType, 407 (sal_Int32 *)pCppStackStart, (pCppStack - pCppStackStart) / sizeof(sal_Int32) ); 408 // NO exception occured... 409 *ppUnoExc = 0; 410 411 // reconvert temporary params 412 for ( ; nTempIndizes--; ) 413 { 414 sal_Int32 nIndex = pTempIndizes[nTempIndizes]; 415 typelib_TypeDescription * pParamTypeDescr = ppTempParamTypeDescr[nTempIndizes]; 416 417 if (pParams[nIndex].bIn) 418 { 419 if (pParams[nIndex].bOut) // inout 420 { 421 uno_destructData( pUnoArgs[nIndex], pParamTypeDescr, 0 ); // destroy uno value 422 uno_copyAndConvertData( pUnoArgs[nIndex], pCppArgs[nIndex], pParamTypeDescr, 423 pThis->getBridge()->getCpp2Uno() ); 424 } 425 } 426 else // pure out 427 { 428 uno_copyAndConvertData( pUnoArgs[nIndex], pCppArgs[nIndex], pParamTypeDescr, 429 pThis->getBridge()->getCpp2Uno() ); 430 } 431 // destroy temp cpp param => cpp: every param was constructed 432 uno_destructData( pCppArgs[nIndex], pParamTypeDescr, cpp_release ); 433 434 TYPELIB_DANGER_RELEASE( pParamTypeDescr ); 435 } 436 // return value 437 if (pCppReturn && pUnoReturn != pCppReturn) 438 { 439 uno_copyAndConvertData( pUnoReturn, pCppReturn, pReturnTypeDescr, 440 pThis->getBridge()->getCpp2Uno() ); 441 uno_destructData( pCppReturn, pReturnTypeDescr, cpp_release ); 442 } 443 } 444 catch (...) 445 { 446 // fill uno exception 447 fillUnoException( CPPU_CURRENT_NAMESPACE::__cxa_get_globals()->caughtExceptions, 448 *ppUnoExc, pThis->getBridge()->getCpp2Uno() ); 449 450 // temporary params 451 for ( ; nTempIndizes--; ) 452 { 453 sal_Int32 nIndex = pTempIndizes[nTempIndizes]; 454 // destroy temp cpp param => cpp: every param was constructed 455 uno_destructData( pCppArgs[nIndex], ppTempParamTypeDescr[nTempIndizes], cpp_release ); 456 TYPELIB_DANGER_RELEASE( ppTempParamTypeDescr[nTempIndizes] ); 457 } 458 // return type 459 if (pReturnTypeDescr) 460 TYPELIB_DANGER_RELEASE( pReturnTypeDescr ); 461 } 462 } 463 464 } 465 466 467 namespace bridges { namespace cpp_uno { namespace shared { 468 469 //================================================================================================== 470 void unoInterfaceProxyDispatch( 471 uno_Interface * pUnoI, const typelib_TypeDescription * pMemberDescr, 472 void * pReturn, void * pArgs[], uno_Any ** ppException ) 473 { 474 // is my surrogate 475 bridges::cpp_uno::shared::UnoInterfaceProxy * pThis 476 = static_cast< bridges::cpp_uno::shared::UnoInterfaceProxy *> (pUnoI); 477 //typelib_InterfaceTypeDescription * pTypeDescr = pThis->pTypeDescr; 478 479 #ifdef BRDEBUG 480 fprintf(stderr,"in dispatch\n"); 481 #endif 482 483 switch (pMemberDescr->eTypeClass) 484 { 485 case typelib_TypeClass_INTERFACE_ATTRIBUTE: 486 { 487 488 VtableSlot aVtableSlot( 489 getVtableSlot( 490 reinterpret_cast< 491 typelib_InterfaceAttributeTypeDescription const * >( 492 pMemberDescr))); 493 494 if (pReturn) 495 { 496 // dependent dispatch 497 cpp_call( 498 pThis, aVtableSlot, 499 ((typelib_InterfaceAttributeTypeDescription *)pMemberDescr)->pAttributeTypeRef, 500 0, 0, // no params 501 pReturn, pArgs, ppException ); 502 } 503 else 504 { 505 // is SET 506 typelib_MethodParameter aParam; 507 aParam.pTypeRef = 508 ((typelib_InterfaceAttributeTypeDescription *)pMemberDescr)->pAttributeTypeRef; 509 aParam.bIn = sal_True; 510 aParam.bOut = sal_False; 511 512 typelib_TypeDescriptionReference * pReturnTypeRef = 0; 513 OUString aVoidName( RTL_CONSTASCII_USTRINGPARAM("void") ); 514 typelib_typedescriptionreference_new( 515 &pReturnTypeRef, typelib_TypeClass_VOID, aVoidName.pData ); 516 517 // dependent dispatch 518 aVtableSlot.index += 1; //get then set method 519 cpp_call( 520 pThis, aVtableSlot, 521 pReturnTypeRef, 522 1, &aParam, 523 pReturn, pArgs, ppException ); 524 525 typelib_typedescriptionreference_release( pReturnTypeRef ); 526 } 527 528 break; 529 } 530 case typelib_TypeClass_INTERFACE_METHOD: 531 { 532 533 VtableSlot aVtableSlot( 534 getVtableSlot( 535 reinterpret_cast< 536 typelib_InterfaceMethodTypeDescription const * >( 537 pMemberDescr))); 538 switch (aVtableSlot.index) 539 { 540 // standard calls 541 case 1: // acquire uno interface 542 (*pUnoI->acquire)( pUnoI ); 543 *ppException = 0; 544 break; 545 case 2: // release uno interface 546 (*pUnoI->release)( pUnoI ); 547 *ppException = 0; 548 break; 549 case 0: // queryInterface() opt 550 { 551 typelib_TypeDescription * pTD = 0; 552 TYPELIB_DANGER_GET( &pTD, reinterpret_cast< Type * >( pArgs[0] )->getTypeLibType() ); 553 if (pTD) 554 { 555 uno_Interface * pInterface = 0; 556 (*pThis->pBridge->getUnoEnv()->getRegisteredInterface)( 557 pThis->pBridge->getUnoEnv(), 558 (void **)&pInterface, pThis->oid.pData, (typelib_InterfaceTypeDescription *)pTD ); 559 560 if (pInterface) 561 { 562 ::uno_any_construct( 563 reinterpret_cast< uno_Any * >( pReturn ), 564 &pInterface, pTD, 0 ); 565 (*pInterface->release)( pInterface ); 566 TYPELIB_DANGER_RELEASE( pTD ); 567 *ppException = 0; 568 break; 569 } 570 TYPELIB_DANGER_RELEASE( pTD ); 571 } 572 } // else perform queryInterface() 573 default: 574 // dependent dispatch 575 cpp_call( 576 pThis, aVtableSlot, 577 ((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->pReturnTypeRef, 578 ((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->nParams, 579 ((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->pParams, 580 pReturn, pArgs, ppException ); 581 } 582 break; 583 } 584 default: 585 { 586 ::com::sun::star::uno::RuntimeException aExc( 587 OUString( RTL_CONSTASCII_USTRINGPARAM("illegal member type description!") ), 588 ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface >() ); 589 590 Type const & rExcType = ::getCppuType( &aExc ); 591 // binary identical null reference 592 ::uno_type_any_construct( *ppException, &aExc, rExcType.getTypeLibType(), 0 ); 593 } 594 } 595 } 596 }}} 597 598