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 // MARKER(update_precomp.py): autogen include statement, do not remove 25 #include "precompiled_bridges.hxx" 26 27 #include <com/sun/star/uno/genfunc.hxx> 28 #include "com/sun/star/uno/RuntimeException.hpp" 29 #include <uno/data.h> 30 #include <sal/alloca.h> 31 32 #include "bridges/cpp_uno/shared/bridge.hxx" 33 #include "bridges/cpp_uno/shared/types.hxx" 34 #include "bridges/cpp_uno/shared/unointerfaceproxy.hxx" 35 #include "bridges/cpp_uno/shared/vtables.hxx" 36 37 #include "share.hxx" 38 #include "smallstruct.hxx" 39 40 using namespace ::rtl; 41 using namespace ::com::sun::star::uno; 42 43 namespace 44 { 45 46 //================================================================================================== 47 // The call instruction within the asm section of callVirtualMethod may throw 48 // exceptions. So that the compiler handles this correctly, it is important 49 // that (a) callVirtualMethod might call dummy_can_throw_anything (although this 50 // never happens at runtime), which in turn can throw exceptions, and (b) 51 // callVirtualMethod is not inlined at its call site (so that any exceptions are 52 // caught which are thrown from the instruction calling callVirtualMethod): 53 void callVirtualMethod( 54 void * pAdjustedThisPtr, 55 sal_Int32 nVtableIndex, 56 void * pRegisterReturn, 57 typelib_TypeDescription const * returnType, 58 sal_Int32 * pStackLongs, 59 sal_Int32 nStackLongs ) __attribute__((noinline)); 60 61 void callVirtualMethod( 62 void * pAdjustedThisPtr, 63 sal_Int32 nVtableIndex, 64 void * pRegisterReturn, 65 typelib_TypeDescription const * returnType, 66 sal_Int32 * pStackLongs, 67 sal_Int32 nStackLongs ) 68 { 69 // parameter list is mixed list of * and values 70 // reference parameters are pointers 71 72 OSL_ENSURE( pStackLongs && pAdjustedThisPtr, "### null ptr!" ); 73 OSL_ENSURE( (sizeof(void *) == 4) && (sizeof(sal_Int32) == 4), "### unexpected size of int!" ); 74 OSL_ENSURE( nStackLongs && pStackLongs, "### no stack in callVirtualMethod !" ); 75 76 // never called 77 if (! pAdjustedThisPtr) CPPU_CURRENT_NAMESPACE::dummy_can_throw_anything("xxx"); // address something 78 79 volatile long edx = 0, eax = 0; // for register returns 80 void * stackptr; 81 asm volatile ( 82 "mov %%esp, %6\n\t" 83 // copy values 84 "mov %0, %%eax\n\t" 85 "mov %%eax, %%edx\n\t" 86 "dec %%edx\n\t" 87 "shl $2, %%edx\n\t" 88 "add %1, %%edx\n" 89 "Lcopy:\n\t" 90 "pushl 0(%%edx)\n\t" 91 "sub $4, %%edx\n\t" 92 "dec %%eax\n\t" 93 "jne Lcopy\n\t" 94 // do the actual call 95 "mov %2, %%edx\n\t" 96 "mov 0(%%edx), %%edx\n\t" 97 "mov %3, %%eax\n\t" 98 "shl $2, %%eax\n\t" 99 "add %%eax, %%edx\n\t" 100 "mov 0(%%edx), %%edx\n\t" 101 "call *%%edx\n\t" 102 // save return registers 103 "mov %%eax, %4\n\t" 104 "mov %%edx, %5\n\t" 105 // cleanup stack 106 "mov %6, %%esp\n\t" 107 : 108 : "m"(nStackLongs), "m"(pStackLongs), "m"(pAdjustedThisPtr), 109 "m"(nVtableIndex), "m"(eax), "m"(edx), "m"(stackptr) 110 : "eax", "edx" ); 111 switch( returnType->eTypeClass ) 112 { 113 case typelib_TypeClass_VOID: 114 break; 115 case typelib_TypeClass_HYPER: 116 case typelib_TypeClass_UNSIGNED_HYPER: 117 ((long*)pRegisterReturn)[1] = edx; 118 case typelib_TypeClass_LONG: 119 case typelib_TypeClass_UNSIGNED_LONG: 120 case typelib_TypeClass_CHAR: 121 case typelib_TypeClass_ENUM: 122 ((long*)pRegisterReturn)[0] = eax; 123 break; 124 case typelib_TypeClass_SHORT: 125 case typelib_TypeClass_UNSIGNED_SHORT: 126 *(unsigned short*)pRegisterReturn = eax; 127 break; 128 case typelib_TypeClass_BOOLEAN: 129 case typelib_TypeClass_BYTE: 130 *(unsigned char*)pRegisterReturn = eax; 131 break; 132 case typelib_TypeClass_FLOAT: 133 asm ( "fstps %0" : : "m"(*(char *)pRegisterReturn) ); 134 break; 135 case typelib_TypeClass_DOUBLE: 136 asm ( "fstpl %0\n\t" : : "m"(*(char *)pRegisterReturn) ); 137 break; 138 case typelib_TypeClass_STRUCT: 139 if (bridges::cpp_uno::shared::isSmallStruct(returnType)) { 140 if (returnType->nSize <= 1) { 141 *(unsigned char*)pRegisterReturn = eax; 142 } 143 else if (returnType->nSize <= 2) { 144 *(unsigned short*)pRegisterReturn = eax; 145 } 146 else if (returnType->nSize <= 8) { 147 ((long*)pRegisterReturn)[0] = eax; 148 if (returnType->nSize > 4) { 149 ((long*)pRegisterReturn)[1] = edx; 150 } 151 } 152 } 153 break; 154 default: 155 break; 156 } 157 } 158 159 //================================================================================================== 160 static void cpp_call( 161 bridges::cpp_uno::shared::UnoInterfaceProxy * pThis, 162 bridges::cpp_uno::shared::VtableSlot aVtableSlot, 163 typelib_TypeDescriptionReference * pReturnTypeRef, 164 sal_Int32 nParams, typelib_MethodParameter * pParams, 165 void * pUnoReturn, void * pUnoArgs[], uno_Any ** ppUnoExc ) 166 { 167 // max space for: [complex ret ptr], values|ptr ... 168 char * pCppStack = 169 #ifdef BROKEN_ALLOCA 170 (char *)malloc( sizeof(sal_Int32) + ((nParams+2) * sizeof(sal_Int64)) ); 171 #else 172 (char *)alloca( sizeof(sal_Int32) + ((nParams+2) * sizeof(sal_Int64)) ); 173 #endif 174 char * pCppStackStart = pCppStack; 175 176 // return 177 typelib_TypeDescription * pReturnTypeDescr = 0; 178 TYPELIB_DANGER_GET( &pReturnTypeDescr, pReturnTypeRef ); 179 OSL_ENSURE( pReturnTypeDescr, "### expected return type description!" ); 180 181 void * pCppReturn = 0; // if != 0 && != pUnoReturn, needs reconversion 182 183 if (pReturnTypeDescr) 184 { 185 if (bridges::cpp_uno::shared::isSimpleType( pReturnTypeDescr )) 186 { 187 pCppReturn = pUnoReturn; // direct way for simple types 188 } 189 else 190 { 191 // complex return via ptr 192 pCppReturn 193 = (bridges::cpp_uno::shared::relatesToInterfaceType( 194 pReturnTypeDescr ) 195 #ifdef BROKEN_ALLOCA 196 ? malloc( pReturnTypeDescr->nSize ) 197 #else 198 ? alloca( pReturnTypeDescr->nSize ) 199 #endif 200 : pUnoReturn); // direct way 201 if (!bridges::cpp_uno::shared::isSmallStruct(pReturnTypeDescr)) { 202 *(void **)pCppStack = pCppReturn; 203 pCppStack += sizeof(void *); 204 } 205 } 206 } 207 // push this 208 void * pAdjustedThisPtr = reinterpret_cast< void ** >(pThis->getCppI()) 209 + aVtableSlot.offset; 210 *(void**)pCppStack = pAdjustedThisPtr; 211 pCppStack += sizeof( void* ); 212 213 // stack space 214 OSL_ENSURE( sizeof(void *) == sizeof(sal_Int32), "### unexpected size!" ); 215 // args 216 #ifdef BROKEN_ALLOCA 217 void ** pCppArgs = (void **)malloc( 3 * sizeof(void *) * nParams ); 218 #else 219 void ** pCppArgs = (void **)alloca( 3 * sizeof(void *) * nParams ); 220 #endif 221 // indizes of values this have to be converted (interface conversion cpp<=>uno) 222 sal_Int32 * pTempIndizes = (sal_Int32 *)(pCppArgs + nParams); 223 // type descriptions for reconversions 224 typelib_TypeDescription ** ppTempParamTypeDescr = (typelib_TypeDescription **)(pCppArgs + (2 * nParams)); 225 226 sal_Int32 nTempIndizes = 0; 227 228 for ( sal_Int32 nPos = 0; nPos < nParams; ++nPos ) 229 { 230 const typelib_MethodParameter & rParam = pParams[nPos]; 231 typelib_TypeDescription * pParamTypeDescr = 0; 232 TYPELIB_DANGER_GET( &pParamTypeDescr, rParam.pTypeRef ); 233 234 if (!rParam.bOut 235 && bridges::cpp_uno::shared::isSimpleType( pParamTypeDescr )) 236 { 237 uno_copyAndConvertData( pCppArgs[nPos] = pCppStack, pUnoArgs[nPos], pParamTypeDescr, 238 pThis->getBridge()->getUno2Cpp() ); 239 240 switch (pParamTypeDescr->eTypeClass) 241 { 242 case typelib_TypeClass_HYPER: 243 case typelib_TypeClass_UNSIGNED_HYPER: 244 case typelib_TypeClass_DOUBLE: 245 pCppStack += sizeof(sal_Int32); // extra long 246 break; 247 default: 248 break; 249 } 250 // no longer needed 251 TYPELIB_DANGER_RELEASE( pParamTypeDescr ); 252 } 253 else // ptr to complex value | ref 254 { 255 if (! rParam.bIn) // is pure out 256 { 257 // cpp out is constructed mem, uno out is not! 258 uno_constructData( 259 #ifdef BROKEN_ALLOCA 260 *(void **)pCppStack = pCppArgs[nPos] = malloc( pParamTypeDescr->nSize ), 261 #else 262 *(void **)pCppStack = pCppArgs[nPos] = alloca( pParamTypeDescr->nSize ), 263 #endif 264 pParamTypeDescr ); 265 pTempIndizes[nTempIndizes] = nPos; // default constructed for cpp call 266 // will be released at reconversion 267 ppTempParamTypeDescr[nTempIndizes++] = pParamTypeDescr; 268 } 269 // is in/inout 270 else if (bridges::cpp_uno::shared::relatesToInterfaceType( 271 pParamTypeDescr )) 272 { 273 uno_copyAndConvertData( 274 #ifdef BROKEN_ALLOCA 275 *(void **)pCppStack = pCppArgs[nPos] = malloc( pParamTypeDescr->nSize ), 276 #else 277 *(void **)pCppStack = pCppArgs[nPos] = alloca( pParamTypeDescr->nSize ), 278 #endif 279 pUnoArgs[nPos], pParamTypeDescr, 280 pThis->getBridge()->getUno2Cpp() ); 281 282 pTempIndizes[nTempIndizes] = nPos; // has to be reconverted 283 // will be released at reconversion 284 ppTempParamTypeDescr[nTempIndizes++] = pParamTypeDescr; 285 } 286 else // direct way 287 { 288 *(void **)pCppStack = pCppArgs[nPos] = pUnoArgs[nPos]; 289 // no longer needed 290 TYPELIB_DANGER_RELEASE( pParamTypeDescr ); 291 } 292 } 293 pCppStack += sizeof(sal_Int32); // standard parameter length 294 } 295 296 try 297 { 298 OSL_ENSURE( !( (pCppStack - pCppStackStart ) & 3), "UNALIGNED STACK !!! (Please DO panic)" ); 299 callVirtualMethod( 300 pAdjustedThisPtr, aVtableSlot.index, 301 pCppReturn, pReturnTypeDescr, 302 (sal_Int32 *)pCppStackStart, (pCppStack - pCppStackStart) / sizeof(sal_Int32) ); 303 // NO exception occured... 304 *ppUnoExc = 0; 305 306 // reconvert temporary params 307 for ( ; nTempIndizes--; ) 308 { 309 sal_Int32 nIndex = pTempIndizes[nTempIndizes]; 310 typelib_TypeDescription * pParamTypeDescr = ppTempParamTypeDescr[nTempIndizes]; 311 312 if (pParams[nIndex].bIn) 313 { 314 if (pParams[nIndex].bOut) // inout 315 { 316 uno_destructData( pUnoArgs[nIndex], pParamTypeDescr, 0 ); // destroy uno value 317 uno_copyAndConvertData( pUnoArgs[nIndex], pCppArgs[nIndex], pParamTypeDescr, 318 pThis->getBridge()->getCpp2Uno() ); 319 } 320 } 321 else // pure out 322 { 323 uno_copyAndConvertData( pUnoArgs[nIndex], pCppArgs[nIndex], pParamTypeDescr, 324 pThis->getBridge()->getCpp2Uno() ); 325 } 326 // destroy temp cpp param => cpp: every param was constructed 327 uno_destructData( pCppArgs[nIndex], pParamTypeDescr, cpp_release ); 328 #ifdef BROKEN_ALLOCA 329 free( pCppArgs[nIndex] ); 330 #endif 331 332 TYPELIB_DANGER_RELEASE( pParamTypeDescr ); 333 } 334 // return value 335 if (pCppReturn && pUnoReturn != pCppReturn) 336 { 337 uno_copyAndConvertData( pUnoReturn, pCppReturn, pReturnTypeDescr, 338 pThis->getBridge()->getCpp2Uno() ); 339 uno_destructData( pCppReturn, pReturnTypeDescr, cpp_release ); 340 } 341 } 342 catch (...) 343 { 344 // fill uno exception 345 fillUnoException( CPPU_CURRENT_NAMESPACE::__cxa_get_globals()->caughtExceptions, *ppUnoExc, pThis->getBridge()->getCpp2Uno() ); 346 347 // temporary params 348 for ( ; nTempIndizes--; ) 349 { 350 sal_Int32 nIndex = pTempIndizes[nTempIndizes]; 351 // destroy temp cpp param => cpp: every param was constructed 352 uno_destructData( pCppArgs[nIndex], ppTempParamTypeDescr[nTempIndizes], cpp_release ); 353 TYPELIB_DANGER_RELEASE( ppTempParamTypeDescr[nTempIndizes] ); 354 #ifdef BROKEN_ALLOCA 355 free( pCppArgs[nIndex] ); 356 #endif 357 } 358 // return type 359 if (pReturnTypeDescr) 360 TYPELIB_DANGER_RELEASE( pReturnTypeDescr ); 361 } 362 if (pCppReturn && pUnoReturn != pCppReturn) 363 { 364 #ifdef BROKEN_ALLOCA 365 free( pCppReturn ); 366 #endif 367 } 368 #ifdef BROKEN_ALLOCA 369 free( pCppStackStart ); 370 #endif 371 } 372 373 } 374 375 namespace bridges { namespace cpp_uno { namespace shared { 376 377 void unoInterfaceProxyDispatch( 378 uno_Interface * pUnoI, const typelib_TypeDescription * pMemberDescr, 379 void * pReturn, void * pArgs[], uno_Any ** ppException ) 380 { 381 // is my surrogate 382 bridges::cpp_uno::shared::UnoInterfaceProxy * pThis 383 = static_cast< bridges::cpp_uno::shared::UnoInterfaceProxy * >(pUnoI); 384 385 switch (pMemberDescr->eTypeClass) 386 { 387 case typelib_TypeClass_INTERFACE_ATTRIBUTE: 388 { 389 VtableSlot aVtableSlot( 390 getVtableSlot( 391 reinterpret_cast< 392 typelib_InterfaceAttributeTypeDescription const * >( 393 pMemberDescr))); 394 if (pReturn) 395 { 396 // dependent dispatch 397 cpp_call( 398 pThis, aVtableSlot, 399 ((typelib_InterfaceAttributeTypeDescription *)pMemberDescr)->pAttributeTypeRef, 400 0, 0, // no params 401 pReturn, pArgs, ppException ); 402 } 403 else 404 { 405 // is SET 406 typelib_MethodParameter aParam; 407 aParam.pTypeRef = 408 ((typelib_InterfaceAttributeTypeDescription *)pMemberDescr)->pAttributeTypeRef; 409 aParam.bIn = sal_True; 410 aParam.bOut = sal_False; 411 412 typelib_TypeDescriptionReference * pReturnTypeRef = 0; 413 OUString aVoidName( RTL_CONSTASCII_USTRINGPARAM("void") ); 414 typelib_typedescriptionreference_new( 415 &pReturnTypeRef, typelib_TypeClass_VOID, aVoidName.pData ); 416 417 // dependent dispatch 418 aVtableSlot.index += 1; // get, then set method 419 cpp_call( 420 pThis, aVtableSlot, 421 pReturnTypeRef, 422 1, &aParam, 423 pReturn, pArgs, ppException ); 424 425 typelib_typedescriptionreference_release( pReturnTypeRef ); 426 } 427 428 break; 429 } 430 case typelib_TypeClass_INTERFACE_METHOD: 431 { 432 VtableSlot aVtableSlot( 433 getVtableSlot( 434 reinterpret_cast< 435 typelib_InterfaceMethodTypeDescription const * >( 436 pMemberDescr))); 437 switch (aVtableSlot.index) 438 { 439 // standard calls 440 case 1: // acquire uno interface 441 (*pUnoI->acquire)( pUnoI ); 442 *ppException = 0; 443 break; 444 case 2: // release uno interface 445 (*pUnoI->release)( pUnoI ); 446 *ppException = 0; 447 break; 448 case 0: // queryInterface() opt 449 { 450 typelib_TypeDescription * pTD = 0; 451 TYPELIB_DANGER_GET( &pTD, reinterpret_cast< Type * >( pArgs[0] )->getTypeLibType() ); 452 if (pTD) 453 { 454 uno_Interface * pInterface = 0; 455 (*pThis->pBridge->getUnoEnv()->getRegisteredInterface)( 456 pThis->pBridge->getUnoEnv(), 457 (void **)&pInterface, pThis->oid.pData, (typelib_InterfaceTypeDescription *)pTD ); 458 459 if (pInterface) 460 { 461 ::uno_any_construct( 462 reinterpret_cast< uno_Any * >( pReturn ), 463 &pInterface, pTD, 0 ); 464 (*pInterface->release)( pInterface ); 465 TYPELIB_DANGER_RELEASE( pTD ); 466 *ppException = 0; 467 break; 468 } 469 TYPELIB_DANGER_RELEASE( pTD ); 470 } 471 } // else perform queryInterface() 472 default: 473 // dependent dispatch 474 cpp_call( 475 pThis, aVtableSlot, 476 ((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->pReturnTypeRef, 477 ((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->nParams, 478 ((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->pParams, 479 pReturn, pArgs, ppException ); 480 } 481 break; 482 } 483 default: 484 { 485 ::com::sun::star::uno::RuntimeException aExc( 486 OUString( RTL_CONSTASCII_USTRINGPARAM("illegal member type description!") ), 487 ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface >() ); 488 489 Type const & rExcType = ::getCppuType( &aExc ); 490 // binary identical null reference 491 ::uno_type_any_construct( *ppException, &aExc, rExcType.getTypeLibType(), 0 ); 492 } 493 } 494 } 495 496 } } } 497