1 /************************************************************** 2 * 3 * Licensed to the Apache Software Foundation (ASF) under one 4 * or more contributor license agreements. See the NOTICE file 5 * distributed with this work for additional information 6 * regarding copyright ownership. The ASF licenses this file 7 * to you under the Apache License, Version 2.0 (the 8 * "License"); you may not use this file except in compliance 9 * with the License. You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, 14 * software distributed under the License is distributed on an 15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16 * KIND, either express or implied. See the License for the 17 * specific language governing permissions and limitations 18 * under the License. 19 * 20 *************************************************************/ 21 22 23 24 #include <malloc.h> 25 26 #include <com/sun/star/uno/genfunc.hxx> 27 #include <uno/data.h> 28 29 #include "bridges/cpp_uno/shared/bridge.hxx" 30 #include "bridges/cpp_uno/shared/types.hxx" 31 #include "bridges/cpp_uno/shared/unointerfaceproxy.hxx" 32 #include "bridges/cpp_uno/shared/vtables.hxx" 33 34 #include "share.hxx" 35 36 //#define BRDEBUG 37 #ifdef BRDEBUG 38 #include <stdio.h> 39 #endif 40 41 42 using namespace ::rtl; 43 using namespace ::com::sun::star::uno; 44 45 namespace 46 { 47 48 49 //================================================================================================== 50 static void callVirtualMethod( 51 void * pAdjustedThisPtr, 52 sal_Int32 nVtableIndex, 53 void * pRegisterReturn, 54 typelib_TypeClass eReturnType, 55 char * pPT, 56 sal_Int32 * pStackLongs, 57 sal_Int32 /*nStackLongs*/) 58 { 59 60 // parameter list is mixed list of * and values 61 // reference parameters are pointers 62 63 unsigned long * mfunc; // actual function to be invoked 64 void (*ptr)(); 65 int gpr[4]; // storage for gpregisters, map to a0-a3 66 int off; // offset used to find function 67 int nw; // number of words mapped 68 long *p; // pointer to parameter overflow area 69 int c; // character of parameter type being decoded 70 int iret, iret2; // temporary function return values 71 72 // never called 73 if (! pAdjustedThisPtr ) CPPU_CURRENT_NAMESPACE::dummy_can_throw_anything("xxx"); // address something 74 75 #ifdef BRDEBUG 76 fprintf(stderr,"in CallVirtualMethod\n"); 77 #endif 78 79 // Because of the MIPS O32 calling conventions we could be passing 80 // parameters in both register types and on the stack. To create the 81 // stack parameter area we need we now simply allocate local 82 // variable storage param[] that is at least the size of the parameter stack 83 // (more than enough space) which we can overwrite the parameters into. 84 85 /* p = sp - 512; new sp will be p - 16, but we don't change sp 86 * at this time to avoid breaking ABI--not sure whether changing sp will break 87 * references to local variables. For the same reason, we use abosulte value. 88 */ 89 __asm__ __volatile__ ( 90 "addiu $2,$29,-512\n\t" 91 "move %0,$2\n\t" 92 :"=r"(p): : "$2","$29" ); 93 94 #ifdef BRDEBUG 95 if (nStackLongs * 4 > 512 ) 96 fprintf(stderr,"too many arguments"); 97 #endif 98 99 // now begin to load the C++ function arguments into storage 100 nw = 0; 101 102 // now we need to parse the entire signature string */ 103 // until we get the END indicator */ 104 105 // treat complex return pointer like any other parameter // 106 107 #ifdef BRDEBUG 108 fprintf(stderr,"overflow area pointer p=%p\n",p); 109 110 /* Let's figure out what is really going on here*/ 111 fprintf(stderr,"callVirtualMethod parameters string is %s\n",pPT); 112 int k = nStackLongs; 113 long * q = (long *)pStackLongs; 114 while (k > 0) { 115 fprintf(stderr,"uno stack is: %x\n",(unsigned int)*q); 116 k--; 117 q++; 118 } 119 #endif 120 121 /* parse the argument list up to the ending ) */ 122 while (*pPT != 'X') { 123 c = *pPT; 124 switch (c) { 125 case 'D': /* type is double */ 126 /* treat the same as long long */ 127 case 'H': /* type is long long */ 128 if (nw & 1) nw++; /* note even elements gpr[] will map to 129 odd registers*/ 130 if (nw < 4) { 131 gpr[nw++] = *pStackLongs; 132 gpr[nw++] = *(pStackLongs+1); 133 } else { 134 if (((long) p) & 4) 135 p++; 136 *p++ = *pStackLongs; 137 *p++ = *(pStackLongs+1); 138 } 139 pStackLongs += 2; 140 break; 141 142 case 'S': 143 if (nw < 4) { 144 gpr[nw++] = *((unsigned short*)pStackLongs); 145 } else { 146 *p++ = *((unsigned short *)pStackLongs); 147 } 148 pStackLongs += 1; 149 break; 150 151 case 'B': 152 if (nw < 4) { 153 gpr[nw++] = *((char *)pStackLongs); 154 } else { 155 *p++ = *((char *)pStackLongs); 156 } 157 pStackLongs += 1; 158 break; 159 160 default: 161 if (nw < 4) { 162 gpr[nw++] = *pStackLongs; 163 } else { 164 *p++ = *pStackLongs; 165 } 166 pStackLongs += 1; 167 break; 168 } 169 pPT++; 170 } 171 172 /* figure out the address of the function we need to invoke */ 173 off = nVtableIndex; 174 off = off * 4; // 4 bytes per slot 175 mfunc = *((unsigned long **)pAdjustedThisPtr); // get the address of the vtable 176 mfunc = (unsigned long *)((char *)mfunc + off); // get the address from the vtable entry at offset 177 mfunc = *((unsigned long **)mfunc); // the function is stored at the address 178 ptr = (void (*)())mfunc; 179 180 #ifdef BRDEBUG 181 fprintf(stderr,"calling function %p\n",mfunc); 182 #endif 183 184 /* Set up the machine registers and invoke the function */ 185 186 __asm__ __volatile__ ( 187 "lw $4, 0(%0)\n\t" 188 "lw $5, 4(%0)\n\t" 189 "lw $6, 8(%0)\n\t" 190 "lw $7, 12(%0)\n\t" 191 : : "r" (gpr) 192 : "$4", "$5", "$6", "$7" 193 ); 194 195 __asm__ __volatile__ ("addiu $29,$29,-528\r\n":::"$29"); 196 197 (*ptr)(); 198 199 __asm__ __volatile__ ("addiu $29,$29,528\r\n":::"$29"); 200 201 __asm__ __volatile__ ( 202 "sw $2,%0 \n\t" 203 "sw $3,%1 \n\t" 204 : "=m" (iret), "=m" (iret2) : ); 205 register float fret asm("$f0"); 206 register double dret asm("$f0"); 207 208 switch( eReturnType ) 209 { 210 case typelib_TypeClass_HYPER: 211 case typelib_TypeClass_UNSIGNED_HYPER: 212 ((long*)pRegisterReturn)[1] = iret2; // fall through 213 case typelib_TypeClass_LONG: 214 case typelib_TypeClass_UNSIGNED_LONG: 215 case typelib_TypeClass_ENUM: 216 ((long*)pRegisterReturn)[0] = iret; 217 break; 218 case typelib_TypeClass_CHAR: 219 case typelib_TypeClass_SHORT: 220 case typelib_TypeClass_UNSIGNED_SHORT: 221 *(unsigned short*)pRegisterReturn = (unsigned short)iret; 222 break; 223 case typelib_TypeClass_BOOLEAN: 224 case typelib_TypeClass_BYTE: 225 *(unsigned char*)pRegisterReturn = (unsigned char)iret; 226 break; 227 case typelib_TypeClass_FLOAT: 228 *(float*)pRegisterReturn = fret; 229 break; 230 case typelib_TypeClass_DOUBLE: 231 *(double*)pRegisterReturn = dret; 232 break; 233 default: 234 break; 235 } 236 } 237 238 239 //================================================================================================== 240 static void cpp_call( 241 bridges::cpp_uno::shared::UnoInterfaceProxy * pThis, 242 bridges::cpp_uno::shared::VtableSlot aVtableSlot, 243 typelib_TypeDescriptionReference * pReturnTypeRef, 244 sal_Int32 nParams, typelib_MethodParameter * pParams, 245 void * pUnoReturn, void * pUnoArgs[], uno_Any ** ppUnoExc ) 246 { 247 // max space for: [complex ret ptr], values|ptr ... 248 char * pCppStack = 249 (char *)alloca( sizeof(sal_Int32) + ((nParams+2) * sizeof(sal_Int64)) ); 250 char * pCppStackStart = pCppStack; 251 252 // need to know parameter types for callVirtualMethod so generate a signature string 253 char * pParamType = (char *) alloca(nParams+2); 254 char * pPT = pParamType; 255 256 #ifdef BRDEBUG 257 fprintf(stderr,"in cpp_call\n"); 258 #endif 259 260 // return 261 typelib_TypeDescription * pReturnTypeDescr = 0; 262 TYPELIB_DANGER_GET( &pReturnTypeDescr, pReturnTypeRef ); 263 // OSL_ENSURE( pReturnTypeDescr, "### expected return type description!" ); 264 265 void * pCppReturn = 0; // if != 0 && != pUnoReturn, needs reconversion 266 267 if (pReturnTypeDescr) 268 { 269 if (bridges::cpp_uno::shared::isSimpleType( pReturnTypeDescr )) 270 { 271 pCppReturn = pUnoReturn; // direct way for simple types 272 } 273 else 274 { 275 // complex return via ptr 276 pCppReturn = *(void **)pCppStack = 277 (bridges::cpp_uno::shared::relatesToInterfaceType( pReturnTypeDescr ) 278 ? alloca( pReturnTypeDescr->nSize ): pUnoReturn); // direct way 279 *pPT++ = 'I'; //signify that a complex return type on stack 280 pCppStack += sizeof(void *); 281 } 282 } 283 // push this 284 void* pAdjustedThisPtr = reinterpret_cast< void **>(pThis->getCppI()) + aVtableSlot.offset; 285 *(void**)pCppStack = pAdjustedThisPtr; 286 pCppStack += sizeof( void* ); 287 *pPT++ = 'I'; 288 289 // stack space 290 // OSL_ENSURE( sizeof(void *) == sizeof(sal_Int32), "### unexpected size!" ); 291 // args 292 void ** pCppArgs = (void **)alloca( 3 * sizeof(void *) * nParams ); 293 // indizes of values this have to be converted (interface conversion cpp<=>uno) 294 sal_Int32 * pTempIndizes = (sal_Int32 *)(pCppArgs + nParams); 295 // type descriptions for reconversions 296 typelib_TypeDescription ** ppTempParamTypeDescr = (typelib_TypeDescription **)(pCppArgs + (2 * nParams)); 297 298 sal_Int32 nTempIndizes = 0; 299 300 for ( sal_Int32 nPos = 0; nPos < nParams; ++nPos ) 301 { 302 const typelib_MethodParameter & rParam = pParams[nPos]; 303 typelib_TypeDescription * pParamTypeDescr = 0; 304 TYPELIB_DANGER_GET( &pParamTypeDescr, rParam.pTypeRef ); 305 306 if (!rParam.bOut && bridges::cpp_uno::shared::isSimpleType( pParamTypeDescr )) 307 { 308 uno_copyAndConvertData( pCppArgs[nPos] = pCppStack, pUnoArgs[nPos], pParamTypeDescr, 309 pThis->getBridge()->getUno2Cpp() ); 310 311 switch (pParamTypeDescr->eTypeClass) 312 { 313 314 // we need to know type of each param so that we know whether to use 315 // gpr or fpr to pass in parameters: 316 // Key: I - int, long, pointer, etc means pass in gpr 317 // B - byte value passed in gpr 318 // S - short value passed in gpr 319 // F - float value pass in fpr 320 // D - double value pass in fpr 321 // H - long long int pass in proper pairs of gpr (3,4) (5,6), etc 322 // X - indicates end of parameter description string 323 324 case typelib_TypeClass_LONG: 325 case typelib_TypeClass_UNSIGNED_LONG: 326 case typelib_TypeClass_ENUM: 327 *pPT++ = 'I'; 328 break; 329 case typelib_TypeClass_SHORT: 330 case typelib_TypeClass_CHAR: 331 case typelib_TypeClass_UNSIGNED_SHORT: 332 *pPT++ = 'S'; 333 break; 334 case typelib_TypeClass_BOOLEAN: 335 case typelib_TypeClass_BYTE: 336 *pPT++ = 'B'; 337 break; 338 case typelib_TypeClass_FLOAT: 339 *pPT++ = 'F'; 340 break; 341 case typelib_TypeClass_DOUBLE: 342 *pPT++ = 'D'; 343 pCppStack += sizeof(sal_Int32); // extra long 344 break; 345 case typelib_TypeClass_HYPER: 346 case typelib_TypeClass_UNSIGNED_HYPER: 347 *pPT++ = 'H'; 348 pCppStack += sizeof(sal_Int32); // extra long 349 break; 350 default: 351 break; 352 } 353 354 // no longer needed 355 TYPELIB_DANGER_RELEASE( pParamTypeDescr ); 356 } 357 else // ptr to complex value | ref 358 { 359 if (! rParam.bIn) // is pure out 360 { 361 // cpp out is constructed mem, uno out is not! 362 uno_constructData( 363 *(void **)pCppStack = pCppArgs[nPos] = alloca( pParamTypeDescr->nSize ), 364 pParamTypeDescr ); 365 pTempIndizes[nTempIndizes] = nPos; // default constructed for cpp call 366 // will be released at reconversion 367 ppTempParamTypeDescr[nTempIndizes++] = pParamTypeDescr; 368 } 369 // is in/inout 370 else if (bridges::cpp_uno::shared::relatesToInterfaceType( pParamTypeDescr )) 371 { 372 uno_copyAndConvertData( 373 *(void **)pCppStack = pCppArgs[nPos] = alloca( pParamTypeDescr->nSize ), 374 pUnoArgs[nPos], pParamTypeDescr, 375 pThis->getBridge()->getUno2Cpp() ); 376 377 pTempIndizes[nTempIndizes] = nPos; // has to be reconverted 378 // will be released at reconversion 379 ppTempParamTypeDescr[nTempIndizes++] = pParamTypeDescr; 380 } 381 else // direct way 382 { 383 *(void **)pCppStack = pCppArgs[nPos] = pUnoArgs[nPos]; 384 // no longer needed 385 TYPELIB_DANGER_RELEASE( pParamTypeDescr ); 386 } 387 // KBH: FIXME: is this the right way to pass these 388 *pPT++='I'; 389 } 390 pCppStack += sizeof(sal_Int32); // standard parameter length 391 } 392 393 // terminate the signature string 394 *pPT++='X'; 395 *pPT=0; 396 397 try 398 { 399 OSL_ENSURE( !( (pCppStack - pCppStackStart ) & 3), "UNALIGNED STACK !!! (Please DO panic)" ); 400 callVirtualMethod( 401 pAdjustedThisPtr, aVtableSlot.index, 402 pCppReturn, pReturnTypeDescr->eTypeClass, pParamType, 403 (sal_Int32 *)pCppStackStart, (pCppStack - pCppStackStart) / sizeof(sal_Int32) ); 404 // NO exception occurred... 405 *ppUnoExc = 0; 406 407 // reconvert temporary params 408 for ( ; nTempIndizes--; ) 409 { 410 sal_Int32 nIndex = pTempIndizes[nTempIndizes]; 411 typelib_TypeDescription * pParamTypeDescr = ppTempParamTypeDescr[nTempIndizes]; 412 413 if (pParams[nIndex].bIn) 414 { 415 if (pParams[nIndex].bOut) // inout 416 { 417 uno_destructData( pUnoArgs[nIndex], pParamTypeDescr, 0 ); // destroy uno value 418 uno_copyAndConvertData( pUnoArgs[nIndex], pCppArgs[nIndex], pParamTypeDescr, 419 pThis->getBridge()->getCpp2Uno() ); 420 } 421 } 422 else // pure out 423 { 424 uno_copyAndConvertData( pUnoArgs[nIndex], pCppArgs[nIndex], pParamTypeDescr, 425 pThis->getBridge()->getCpp2Uno() ); 426 } 427 // destroy temp cpp param => cpp: every param was constructed 428 uno_destructData( pCppArgs[nIndex], pParamTypeDescr, cpp_release ); 429 430 TYPELIB_DANGER_RELEASE( pParamTypeDescr ); 431 } 432 // return value 433 if (pCppReturn && pUnoReturn != pCppReturn) 434 { 435 uno_copyAndConvertData( pUnoReturn, pCppReturn, pReturnTypeDescr, 436 pThis->getBridge()->getCpp2Uno() ); 437 uno_destructData( pCppReturn, pReturnTypeDescr, cpp_release ); 438 } 439 } 440 catch (...) 441 { 442 // fill uno exception 443 fillUnoException( CPPU_CURRENT_NAMESPACE::__cxa_get_globals()->caughtExceptions, 444 *ppUnoExc, pThis->getBridge()->getCpp2Uno() ); 445 446 // temporary params 447 for ( ; nTempIndizes--; ) 448 { 449 sal_Int32 nIndex = pTempIndizes[nTempIndizes]; 450 // destroy temp cpp param => cpp: every param was constructed 451 uno_destructData( pCppArgs[nIndex], ppTempParamTypeDescr[nTempIndizes], cpp_release ); 452 TYPELIB_DANGER_RELEASE( ppTempParamTypeDescr[nTempIndizes] ); 453 } 454 // return type 455 if (pReturnTypeDescr) 456 TYPELIB_DANGER_RELEASE( pReturnTypeDescr ); 457 } 458 } 459 460 } 461 462 463 namespace bridges { namespace cpp_uno { namespace shared { 464 465 //================================================================================================== 466 void unoInterfaceProxyDispatch( 467 uno_Interface * pUnoI, const typelib_TypeDescription * pMemberDescr, 468 void * pReturn, void * pArgs[], uno_Any ** ppException ) 469 { 470 // is my surrogate 471 bridges::cpp_uno::shared::UnoInterfaceProxy * pThis 472 = static_cast< bridges::cpp_uno::shared::UnoInterfaceProxy *> (pUnoI); 473 //typelib_InterfaceTypeDescription * pTypeDescr = pThis->pTypeDescr; 474 475 #ifdef BRDEBUG 476 fprintf(stderr,"in dispatch\n"); 477 #endif 478 479 switch (pMemberDescr->eTypeClass) 480 { 481 case typelib_TypeClass_INTERFACE_ATTRIBUTE: 482 { 483 484 VtableSlot aVtableSlot( 485 getVtableSlot( 486 reinterpret_cast< 487 typelib_InterfaceAttributeTypeDescription const * >( 488 pMemberDescr))); 489 490 if (pReturn) 491 { 492 // dependent dispatch 493 cpp_call( 494 pThis, aVtableSlot, 495 ((typelib_InterfaceAttributeTypeDescription *)pMemberDescr)->pAttributeTypeRef, 496 0, 0, // no params 497 pReturn, pArgs, ppException ); 498 } 499 else 500 { 501 // is SET 502 typelib_MethodParameter aParam; 503 aParam.pTypeRef = 504 ((typelib_InterfaceAttributeTypeDescription *)pMemberDescr)->pAttributeTypeRef; 505 aParam.bIn = sal_True; 506 aParam.bOut = sal_False; 507 508 typelib_TypeDescriptionReference * pReturnTypeRef = 0; 509 OUString aVoidName( RTL_CONSTASCII_USTRINGPARAM("void") ); 510 typelib_typedescriptionreference_new( 511 &pReturnTypeRef, typelib_TypeClass_VOID, aVoidName.pData ); 512 513 // dependent dispatch 514 aVtableSlot.index += 1; //get then set method 515 cpp_call( 516 pThis, aVtableSlot, 517 pReturnTypeRef, 518 1, &aParam, 519 pReturn, pArgs, ppException ); 520 521 typelib_typedescriptionreference_release( pReturnTypeRef ); 522 } 523 524 break; 525 } 526 case typelib_TypeClass_INTERFACE_METHOD: 527 { 528 529 VtableSlot aVtableSlot( 530 getVtableSlot( 531 reinterpret_cast< 532 typelib_InterfaceMethodTypeDescription const * >( 533 pMemberDescr))); 534 switch (aVtableSlot.index) 535 { 536 // standard calls 537 case 1: // acquire uno interface 538 (*pUnoI->acquire)( pUnoI ); 539 *ppException = 0; 540 break; 541 case 2: // release uno interface 542 (*pUnoI->release)( pUnoI ); 543 *ppException = 0; 544 break; 545 case 0: // queryInterface() opt 546 { 547 typelib_TypeDescription * pTD = 0; 548 TYPELIB_DANGER_GET( &pTD, reinterpret_cast< Type * >( pArgs[0] )->getTypeLibType() ); 549 if (pTD) 550 { 551 uno_Interface * pInterface = 0; 552 (*pThis->pBridge->getUnoEnv()->getRegisteredInterface)( 553 pThis->pBridge->getUnoEnv(), 554 (void **)&pInterface, pThis->oid.pData, (typelib_InterfaceTypeDescription *)pTD ); 555 556 if (pInterface) 557 { 558 ::uno_any_construct( 559 reinterpret_cast< uno_Any * >( pReturn ), 560 &pInterface, pTD, 0 ); 561 (*pInterface->release)( pInterface ); 562 TYPELIB_DANGER_RELEASE( pTD ); 563 *ppException = 0; 564 break; 565 } 566 TYPELIB_DANGER_RELEASE( pTD ); 567 } 568 } // else perform queryInterface() 569 default: 570 // dependent dispatch 571 cpp_call( 572 pThis, aVtableSlot, 573 ((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->pReturnTypeRef, 574 ((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->nParams, 575 ((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->pParams, 576 pReturn, pArgs, ppException ); 577 } 578 break; 579 } 580 default: 581 { 582 ::com::sun::star::uno::RuntimeException aExc( 583 OUString( RTL_CONSTASCII_USTRINGPARAM("illegal member type description!") ), 584 ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface >() ); 585 586 Type const & rExcType = ::getCppuType( &aExc ); 587 // binary identical null reference 588 ::uno_type_any_construct( *ppException, &aExc, rExcType.getTypeLibType(), 0 ); 589 } 590 } 591 } 592 }}} 593 594