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 <stdio.h> 28 29 // #include <malloc.h> 30 31 #include <com/sun/star/uno/genfunc.hxx> 32 #include "com/sun/star/uno/RuntimeException.hpp" 33 #include <uno/data.h> 34 35 #include "bridges/cpp_uno/shared/bridge.hxx" 36 #include "bridges/cpp_uno/shared/types.hxx" 37 #include "bridges/cpp_uno/shared/unointerfaceproxy.hxx" 38 #include "bridges/cpp_uno/shared/vtables.hxx" 39 40 #include "share.hxx" 41 42 using namespace ::rtl; 43 using namespace ::com::sun::star::uno; 44 45 namespace 46 { 47 48 //================================================================================================== 49 // The call instruction within the asm section of callVirtualMethod may throw 50 // exceptions. So that the compiler handles this correctly, it is important 51 // that (a) callVirtualMethod might call dummy_can_throw_anything (although this 52 // never happens at runtime), which in turn can throw exceptions, and (b) 53 // callVirtualMethod is not inlined at its call site (so that any exceptions are 54 // caught which are thrown from the instruction calling callVirtualMethod): 55 void callVirtualMethod( 56 void * pAdjustedThisPtr, 57 sal_Int32 nVtableIndex, 58 void * pRegisterReturn, 59 typelib_TypeDescription * pReturnTypeDescr, bool bSimpleReturn, 60 sal_Int32 * pStackLongs, 61 sal_Int32 nStackLongs ) __attribute__((noinline)); 62 63 void callVirtualMethod( 64 void * pAdjustedThisPtr, 65 sal_Int32 nVtableIndex, 66 void * pRegisterReturn, 67 typelib_TypeDescription * pReturnTypeDescr, bool bSimpleReturn, 68 sal_Int32 * pStackLongs, 69 sal_Int32 nStackLongs ) 70 { 71 // parameter list is mixed list of * and values 72 // reference parameters are pointers 73 74 OSL_ENSURE( pStackLongs && pAdjustedThisPtr, "### null ptr!" ); 75 OSL_ENSURE( (sizeof(void *) == 4) && (sizeof(sal_Int32) == 4), "### unexpected size of int!" ); 76 OSL_ENSURE( nStackLongs && pStackLongs, "### no stack in callVirtualMethod !" ); 77 78 // never called 79 if (! pAdjustedThisPtr) CPPU_CURRENT_NAMESPACE::dummy_can_throw_anything("xxx"); // address something 80 81 volatile long edx = 0, eax = 0; // for register returns 82 void * stackptr; 83 asm volatile ( 84 "mov %%esp, %6\n\t" 85 "mov %0, %%eax\n\t" 86 "mov %%eax, %%edx\n\t" 87 // stack padding to keep stack aligned: 88 "shl $2, %%eax\n\t" 89 "neg %%eax\n\t" 90 "add %%esp, %%eax\n\t" 91 "and $0xf, %%eax\n\t" 92 "sub %%eax, %%esp\n\t" 93 // copy: 94 "mov %%edx, %%eax\n\t" 95 "dec %%edx\n\t" 96 "shl $2, %%edx\n\t" 97 "add %1, %%edx\n" 98 "Lcopy:\n\t" 99 "pushl 0(%%edx)\n\t" 100 "sub $4, %%edx\n\t" 101 "dec %%eax\n\t" 102 "jne Lcopy\n\t" 103 // do the actual call 104 "mov %2, %%edx\n\t" 105 "mov 0(%%edx), %%edx\n\t" 106 "mov %3, %%eax\n\t" 107 "shl $2, %%eax\n\t" 108 "add %%eax, %%edx\n\t" 109 "mov 0(%%edx), %%edx\n\t" 110 "call *%%edx\n\t" 111 // save return registers 112 "mov %%eax, %4\n\t" 113 "mov %%edx, %5\n\t" 114 // cleanup stack 115 "mov %6, %%esp\n\t" 116 : 117 : "m"(nStackLongs), "m"(pStackLongs), "m"(pAdjustedThisPtr), 118 "m"(nVtableIndex), "m"(eax), "m"(edx), "m"(stackptr) 119 : "eax", "edx" ); 120 switch( pReturnTypeDescr->eTypeClass ) 121 { 122 case typelib_TypeClass_VOID: 123 break; 124 case typelib_TypeClass_HYPER: 125 case typelib_TypeClass_UNSIGNED_HYPER: 126 ((long*)pRegisterReturn)[1] = edx; 127 case typelib_TypeClass_LONG: 128 case typelib_TypeClass_UNSIGNED_LONG: 129 case typelib_TypeClass_CHAR: 130 case typelib_TypeClass_ENUM: 131 ((long*)pRegisterReturn)[0] = eax; 132 break; 133 case typelib_TypeClass_SHORT: 134 case typelib_TypeClass_UNSIGNED_SHORT: 135 *(unsigned short*)pRegisterReturn = eax; 136 break; 137 case typelib_TypeClass_BOOLEAN: 138 case typelib_TypeClass_BYTE: 139 *(unsigned char*)pRegisterReturn = eax; 140 break; 141 case typelib_TypeClass_FLOAT: 142 asm ( "fstps %0" : : "m"(*(char *)pRegisterReturn) ); 143 break; 144 case typelib_TypeClass_DOUBLE: 145 asm ( "fstpl %0\n\t" : : "m"(*(char *)pRegisterReturn) ); 146 break; 147 default: { 148 sal_Int32 const nRetSize = pReturnTypeDescr->nSize; 149 if (bSimpleReturn && nRetSize <= 8 && nRetSize > 0) { 150 if (nRetSize > 4) 151 static_cast<long *>(pRegisterReturn)[1] = edx; 152 static_cast<long *>(pRegisterReturn)[0] = eax; 153 } 154 break; 155 } 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 (char *)alloca( sizeof(sal_Int32) + ((nParams+2) * sizeof(sal_Int64)) ); 170 char * pCppStackStart = pCppStack; 171 172 // return 173 typelib_TypeDescription * pReturnTypeDescr = 0; 174 TYPELIB_DANGER_GET( &pReturnTypeDescr, pReturnTypeRef ); 175 OSL_ENSURE( pReturnTypeDescr, "### expected return type description!" ); 176 177 void * pCppReturn = 0; // if != 0 && != pUnoReturn, needs reconversion 178 bool bSimpleReturn = true; 179 180 if (pReturnTypeDescr) 181 { 182 bSimpleReturn = CPPU_CURRENT_NAMESPACE::isSimpleReturnType( 183 pReturnTypeDescr); 184 if (bSimpleReturn) 185 { 186 pCppReturn = pUnoReturn; // direct way for simple types 187 } 188 else 189 { 190 pCppReturn = (bridges::cpp_uno::shared::relatesToInterfaceType( 191 pReturnTypeDescr ) 192 ? alloca( pReturnTypeDescr->nSize ) 193 : pUnoReturn); // direct way 194 // complex return via ptr 195 *(void **)pCppStack = pCppReturn; 196 pCppStack += sizeof(void *); 197 } 198 } 199 // push this 200 void * pAdjustedThisPtr = reinterpret_cast< void ** >(pThis->getCppI()) 201 + aVtableSlot.offset; 202 *(void**)pCppStack = pAdjustedThisPtr; 203 pCppStack += sizeof( void* ); 204 205 // stack space 206 OSL_ENSURE( sizeof(void *) == sizeof(sal_Int32), "### unexpected size!" ); 207 // args 208 void ** pCppArgs = (void **)alloca( 3 * sizeof(void *) * nParams ); 209 // indizes of values this have to be converted (interface conversion cpp<=>uno) 210 sal_Int32 * pTempIndizes = (sal_Int32 *)(pCppArgs + nParams); 211 // type descriptions for reconversions 212 typelib_TypeDescription ** ppTempParamTypeDescr = (typelib_TypeDescription **)(pCppArgs + (2 * nParams)); 213 214 sal_Int32 nTempIndizes = 0; 215 216 for ( sal_Int32 nPos = 0; nPos < nParams; ++nPos ) 217 { 218 const typelib_MethodParameter & rParam = pParams[nPos]; 219 typelib_TypeDescription * pParamTypeDescr = 0; 220 TYPELIB_DANGER_GET( &pParamTypeDescr, rParam.pTypeRef ); 221 222 if (!rParam.bOut 223 && bridges::cpp_uno::shared::isSimpleType( pParamTypeDescr )) 224 { 225 uno_copyAndConvertData( pCppArgs[nPos] = pCppStack, pUnoArgs[nPos], pParamTypeDescr, 226 pThis->getBridge()->getUno2Cpp() ); 227 228 switch (pParamTypeDescr->eTypeClass) 229 { 230 case typelib_TypeClass_HYPER: 231 case typelib_TypeClass_UNSIGNED_HYPER: 232 case typelib_TypeClass_DOUBLE: 233 pCppStack += sizeof(sal_Int32); // extra long 234 default: 235 break; 236 } 237 // no longer needed 238 TYPELIB_DANGER_RELEASE( pParamTypeDescr ); 239 } 240 else // ptr to complex value | ref 241 { 242 if (! rParam.bIn) // is pure out 243 { 244 // cpp out is constructed mem, uno out is not! 245 uno_constructData( 246 *(void **)pCppStack = pCppArgs[nPos] = alloca( pParamTypeDescr->nSize ), 247 pParamTypeDescr ); 248 pTempIndizes[nTempIndizes] = nPos; // default constructed for cpp call 249 // will be released at reconversion 250 ppTempParamTypeDescr[nTempIndizes++] = pParamTypeDescr; 251 } 252 // is in/inout 253 else if (bridges::cpp_uno::shared::relatesToInterfaceType( 254 pParamTypeDescr )) 255 { 256 uno_copyAndConvertData( 257 *(void **)pCppStack = pCppArgs[nPos] = alloca( pParamTypeDescr->nSize ), 258 pUnoArgs[nPos], pParamTypeDescr, 259 pThis->getBridge()->getUno2Cpp() ); 260 261 pTempIndizes[nTempIndizes] = nPos; // has to be reconverted 262 // will be released at reconversion 263 ppTempParamTypeDescr[nTempIndizes++] = pParamTypeDescr; 264 } 265 else // direct way 266 { 267 *(void **)pCppStack = pCppArgs[nPos] = pUnoArgs[nPos]; 268 // no longer needed 269 TYPELIB_DANGER_RELEASE( pParamTypeDescr ); 270 } 271 } 272 pCppStack += sizeof(sal_Int32); // standard parameter length 273 } 274 275 try 276 { 277 OSL_ENSURE( !( (pCppStack - pCppStackStart ) & 3), "UNALIGNED STACK !!! (Please DO panic)" ); 278 callVirtualMethod( 279 pAdjustedThisPtr, aVtableSlot.index, 280 pCppReturn, pReturnTypeDescr, bSimpleReturn, 281 (sal_Int32 *)pCppStackStart, (pCppStack - pCppStackStart) / sizeof(sal_Int32) ); 282 // NO exception occured... 283 *ppUnoExc = 0; 284 285 // reconvert temporary params 286 for ( ; nTempIndizes--; ) 287 { 288 sal_Int32 nIndex = pTempIndizes[nTempIndizes]; 289 typelib_TypeDescription * pParamTypeDescr = ppTempParamTypeDescr[nTempIndizes]; 290 291 if (pParams[nIndex].bIn) 292 { 293 if (pParams[nIndex].bOut) // inout 294 { 295 uno_destructData( pUnoArgs[nIndex], pParamTypeDescr, 0 ); // destroy uno value 296 uno_copyAndConvertData( pUnoArgs[nIndex], pCppArgs[nIndex], pParamTypeDescr, 297 pThis->getBridge()->getCpp2Uno() ); 298 } 299 } 300 else // pure out 301 { 302 uno_copyAndConvertData( pUnoArgs[nIndex], pCppArgs[nIndex], pParamTypeDescr, 303 pThis->getBridge()->getCpp2Uno() ); 304 } 305 // destroy temp cpp param => cpp: every param was constructed 306 uno_destructData( pCppArgs[nIndex], pParamTypeDescr, cpp_release ); 307 308 TYPELIB_DANGER_RELEASE( pParamTypeDescr ); 309 } 310 // return value 311 if (pCppReturn && pUnoReturn != pCppReturn) 312 { 313 uno_copyAndConvertData( pUnoReturn, pCppReturn, pReturnTypeDescr, 314 pThis->getBridge()->getCpp2Uno() ); 315 uno_destructData( pCppReturn, pReturnTypeDescr, cpp_release ); 316 } 317 } 318 catch (...) 319 { 320 #if OSL_DEBUG_LEVEL > 1 321 fprintf( stderr, "caught C++ exception\n" ); 322 #endif 323 // fill uno exception 324 fillUnoException( CPPU_CURRENT_NAMESPACE::__cxa_get_globals()->caughtExceptions, *ppUnoExc, pThis->getBridge()->getCpp2Uno() ); 325 326 // temporary params 327 for ( ; nTempIndizes--; ) 328 { 329 sal_Int32 nIndex = pTempIndizes[nTempIndizes]; 330 // destroy temp cpp param => cpp: every param was constructed 331 uno_destructData( pCppArgs[nIndex], ppTempParamTypeDescr[nTempIndizes], cpp_release ); 332 TYPELIB_DANGER_RELEASE( ppTempParamTypeDescr[nTempIndizes] ); 333 } 334 // return type 335 if (pReturnTypeDescr) 336 TYPELIB_DANGER_RELEASE( pReturnTypeDescr ); 337 } 338 } 339 340 } 341 342 namespace CPPU_CURRENT_NAMESPACE { 343 bool isSimpleReturnType(typelib_TypeDescription * pTD, bool recursive) 344 { 345 if (bridges::cpp_uno::shared::isSimpleType( pTD )) 346 return true; 347 // Only structs of exactly 1, 2, 4, or 8 bytes are returned through 348 // registers, see <http://developer.apple.com/documentation/DeveloperTools/ 349 // Conceptual/LowLevelABI/Articles/IA32.html>: 350 if (pTD->eTypeClass == typelib_TypeClass_STRUCT && 351 (recursive || pTD->nSize <= 2 || pTD->nSize == 4 || pTD->nSize == 8)) 352 { 353 typelib_CompoundTypeDescription *const pCompTD = 354 (typelib_CompoundTypeDescription *) pTD; 355 for ( sal_Int32 pos = pCompTD->nMembers; pos--; ) { 356 typelib_TypeDescription * pMemberTD = 0; 357 TYPELIB_DANGER_GET( &pMemberTD, pCompTD->ppTypeRefs[pos] ); 358 bool const b = isSimpleReturnType(pMemberTD, true); 359 TYPELIB_DANGER_RELEASE( pMemberTD ); 360 if (! b) 361 return false; 362 } 363 return true; 364 } 365 return false; 366 } 367 } 368 369 //================================================================================================== 370 371 namespace bridges { namespace cpp_uno { namespace shared { 372 void unoInterfaceProxyDispatch( 373 uno_Interface * pUnoI, const typelib_TypeDescription * pMemberDescr, 374 void * pReturn, void * pArgs[], uno_Any ** ppException ) 375 { 376 // is my surrogate 377 bridges::cpp_uno::shared::UnoInterfaceProxy * pThis 378 = static_cast< bridges::cpp_uno::shared::UnoInterfaceProxy * >(pUnoI); 379 380 switch (pMemberDescr->eTypeClass) 381 { 382 case typelib_TypeClass_INTERFACE_ATTRIBUTE: 383 { 384 VtableSlot aVtableSlot( 385 getVtableSlot( 386 reinterpret_cast< 387 typelib_InterfaceAttributeTypeDescription const * >( 388 pMemberDescr))); 389 if (pReturn) 390 { 391 // dependent dispatch 392 cpp_call( 393 pThis, aVtableSlot, 394 ((typelib_InterfaceAttributeTypeDescription *)pMemberDescr)->pAttributeTypeRef, 395 0, 0, // no params 396 pReturn, pArgs, ppException ); 397 } 398 else 399 { 400 // is SET 401 typelib_MethodParameter aParam; 402 aParam.pTypeRef = 403 ((typelib_InterfaceAttributeTypeDescription *)pMemberDescr)->pAttributeTypeRef; 404 aParam.bIn = sal_True; 405 aParam.bOut = sal_False; 406 407 typelib_TypeDescriptionReference * pReturnTypeRef = 0; 408 OUString aVoidName( RTL_CONSTASCII_USTRINGPARAM("void") ); 409 typelib_typedescriptionreference_new( 410 &pReturnTypeRef, typelib_TypeClass_VOID, aVoidName.pData ); 411 412 // dependent dispatch 413 aVtableSlot.index += 1; // get, then set method 414 cpp_call( 415 pThis, aVtableSlot, 416 pReturnTypeRef, 417 1, &aParam, 418 pReturn, pArgs, ppException ); 419 420 typelib_typedescriptionreference_release( pReturnTypeRef ); 421 } 422 423 break; 424 } 425 case typelib_TypeClass_INTERFACE_METHOD: 426 { 427 VtableSlot aVtableSlot( 428 getVtableSlot( 429 reinterpret_cast< 430 typelib_InterfaceMethodTypeDescription const * >( 431 pMemberDescr))); 432 switch (aVtableSlot.index) 433 { 434 // standard calls 435 case 1: // acquire uno interface 436 (*pUnoI->acquire)( pUnoI ); 437 *ppException = 0; 438 break; 439 case 2: // release uno interface 440 (*pUnoI->release)( pUnoI ); 441 *ppException = 0; 442 break; 443 case 0: // queryInterface() opt 444 { 445 typelib_TypeDescription * pTD = 0; 446 TYPELIB_DANGER_GET( &pTD, reinterpret_cast< Type * >( pArgs[0] )->getTypeLibType() ); 447 if (pTD) 448 { 449 uno_Interface * pInterface = 0; 450 (*pThis->pBridge->getUnoEnv()->getRegisteredInterface)( 451 pThis->pBridge->getUnoEnv(), 452 (void **)&pInterface, pThis->oid.pData, (typelib_InterfaceTypeDescription *)pTD ); 453 454 if (pInterface) 455 { 456 ::uno_any_construct( 457 reinterpret_cast< uno_Any * >( pReturn ), 458 &pInterface, pTD, 0 ); 459 (*pInterface->release)( pInterface ); 460 TYPELIB_DANGER_RELEASE( pTD ); 461 *ppException = 0; 462 break; 463 } 464 TYPELIB_DANGER_RELEASE( pTD ); 465 } 466 } // else perform queryInterface() 467 default: 468 // dependent dispatch 469 cpp_call( 470 pThis, aVtableSlot, 471 ((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->pReturnTypeRef, 472 ((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->nParams, 473 ((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->pParams, 474 pReturn, pArgs, ppException ); 475 } 476 break; 477 } 478 default: 479 { 480 ::com::sun::star::uno::RuntimeException aExc( 481 OUString( RTL_CONSTASCII_USTRINGPARAM("illegal member type description!") ), 482 ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface >() ); 483 484 Type const & rExcType = ::getCppuType( &aExc ); 485 // binary identical null reference 486 ::uno_type_any_construct( *ppException, &aExc, rExcType.getTypeLibType(), 0 ); 487 } 488 } 489 } 490 491 } } } 492