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 <stdlib.h> 28 29 #include <com/sun/star/uno/genfunc.hxx> 30 #include "com/sun/star/uno/RuntimeException.hpp" 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 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_TypeClass eReturnType, 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_TypeClass eReturnType, 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( eReturnType ) 112 { 113 case typelib_TypeClass_HYPER: 114 case typelib_TypeClass_UNSIGNED_HYPER: 115 ((long*)pRegisterReturn)[1] = edx; 116 case typelib_TypeClass_LONG: 117 case typelib_TypeClass_UNSIGNED_LONG: 118 case typelib_TypeClass_CHAR: 119 case typelib_TypeClass_ENUM: 120 ((long*)pRegisterReturn)[0] = eax; 121 break; 122 case typelib_TypeClass_SHORT: 123 case typelib_TypeClass_UNSIGNED_SHORT: 124 *(unsigned short*)pRegisterReturn = eax; 125 break; 126 case typelib_TypeClass_BOOLEAN: 127 case typelib_TypeClass_BYTE: 128 *(unsigned char*)pRegisterReturn = eax; 129 break; 130 case typelib_TypeClass_FLOAT: 131 asm ( "fstps %0" : : "m"(*(char *)pRegisterReturn) ); 132 break; 133 case typelib_TypeClass_DOUBLE: 134 asm ( "fstpl %0\n\t" : : "m"(*(char *)pRegisterReturn) ); 135 break; 136 default: 137 break; 138 } 139 } 140 141 //================================================================================================== 142 static void cpp_call( 143 bridges::cpp_uno::shared::UnoInterfaceProxy * pThis, 144 bridges::cpp_uno::shared::VtableSlot aVtableSlot, 145 typelib_TypeDescriptionReference * pReturnTypeRef, 146 sal_Int32 nParams, typelib_MethodParameter * pParams, 147 void * pUnoReturn, void * pUnoArgs[], uno_Any ** ppUnoExc ) 148 { 149 // max space for: [complex ret ptr], values|ptr ... 150 char * pCppStack = 151 (char *)alloca( sizeof(sal_Int32) + ((nParams+2) * sizeof(sal_Int64)) ); 152 char * pCppStackStart = pCppStack; 153 154 // return 155 typelib_TypeDescription * pReturnTypeDescr = 0; 156 TYPELIB_DANGER_GET( &pReturnTypeDescr, pReturnTypeRef ); 157 OSL_ENSURE( pReturnTypeDescr, "### expected return type description!" ); 158 159 void * pCppReturn = 0; // if != 0 && != pUnoReturn, needs reconversion 160 161 if (pReturnTypeDescr) 162 { 163 if (bridges::cpp_uno::shared::isSimpleType( pReturnTypeDescr )) 164 { 165 pCppReturn = pUnoReturn; // direct way for simple types 166 } 167 else 168 { 169 // complex return via ptr 170 pCppReturn = *(void **)pCppStack 171 = (bridges::cpp_uno::shared::relatesToInterfaceType( 172 pReturnTypeDescr ) 173 ? alloca( pReturnTypeDescr->nSize ) 174 : pUnoReturn); // direct way 175 pCppStack += sizeof(void *); 176 } 177 } 178 // push this 179 void * pAdjustedThisPtr = reinterpret_cast< void ** >(pThis->getCppI()) 180 + aVtableSlot.offset; 181 *(void**)pCppStack = pAdjustedThisPtr; 182 pCppStack += sizeof( void* ); 183 184 // stack space 185 OSL_ENSURE( sizeof(void *) == sizeof(sal_Int32), "### unexpected size!" ); 186 // args 187 void ** pCppArgs = (void **)alloca( 3 * sizeof(void *) * nParams ); 188 // indizes of values this have to be converted (interface conversion cpp<=>uno) 189 sal_Int32 * pTempIndizes = (sal_Int32 *)(pCppArgs + nParams); 190 // type descriptions for reconversions 191 typelib_TypeDescription ** ppTempParamTypeDescr = (typelib_TypeDescription **)(pCppArgs + (2 * nParams)); 192 193 sal_Int32 nTempIndizes = 0; 194 195 for ( sal_Int32 nPos = 0; nPos < nParams; ++nPos ) 196 { 197 const typelib_MethodParameter & rParam = pParams[nPos]; 198 typelib_TypeDescription * pParamTypeDescr = 0; 199 TYPELIB_DANGER_GET( &pParamTypeDescr, rParam.pTypeRef ); 200 201 if (!rParam.bOut 202 && bridges::cpp_uno::shared::isSimpleType( pParamTypeDescr )) 203 { 204 uno_copyAndConvertData( pCppArgs[nPos] = pCppStack, pUnoArgs[nPos], pParamTypeDescr, 205 pThis->getBridge()->getUno2Cpp() ); 206 207 switch (pParamTypeDescr->eTypeClass) 208 { 209 case typelib_TypeClass_HYPER: 210 case typelib_TypeClass_UNSIGNED_HYPER: 211 case typelib_TypeClass_DOUBLE: 212 pCppStack += sizeof(sal_Int32); // extra long 213 break; 214 default: 215 break; 216 } 217 // no longer needed 218 TYPELIB_DANGER_RELEASE( pParamTypeDescr ); 219 } 220 else // ptr to complex value | ref 221 { 222 if (! rParam.bIn) // is pure out 223 { 224 // cpp out is constructed mem, uno out is not! 225 uno_constructData( 226 *(void **)pCppStack = pCppArgs[nPos] = alloca( pParamTypeDescr->nSize ), 227 pParamTypeDescr ); 228 pTempIndizes[nTempIndizes] = nPos; // default constructed for cpp call 229 // will be released at reconversion 230 ppTempParamTypeDescr[nTempIndizes++] = pParamTypeDescr; 231 } 232 // is in/inout 233 else if (bridges::cpp_uno::shared::relatesToInterfaceType( 234 pParamTypeDescr )) 235 { 236 uno_copyAndConvertData( 237 *(void **)pCppStack = pCppArgs[nPos] = alloca( pParamTypeDescr->nSize ), 238 pUnoArgs[nPos], pParamTypeDescr, 239 pThis->getBridge()->getUno2Cpp() ); 240 241 pTempIndizes[nTempIndizes] = nPos; // has to be reconverted 242 // will be released at reconversion 243 ppTempParamTypeDescr[nTempIndizes++] = pParamTypeDescr; 244 } 245 else // direct way 246 { 247 *(void **)pCppStack = pCppArgs[nPos] = pUnoArgs[nPos]; 248 // no longer needed 249 TYPELIB_DANGER_RELEASE( pParamTypeDescr ); 250 } 251 } 252 pCppStack += sizeof(sal_Int32); // standard parameter length 253 } 254 255 try 256 { 257 OSL_ENSURE( !( (pCppStack - pCppStackStart ) & 3), "UNALIGNED STACK !!! (Please DO panic)" ); 258 callVirtualMethod( 259 pAdjustedThisPtr, aVtableSlot.index, 260 pCppReturn, pReturnTypeDescr->eTypeClass, 261 (sal_Int32 *)pCppStackStart, (pCppStack - pCppStackStart) / sizeof(sal_Int32) ); 262 // NO exception occured... 263 *ppUnoExc = 0; 264 265 // reconvert temporary params 266 for ( ; nTempIndizes--; ) 267 { 268 sal_Int32 nIndex = pTempIndizes[nTempIndizes]; 269 typelib_TypeDescription * pParamTypeDescr = ppTempParamTypeDescr[nTempIndizes]; 270 271 if (pParams[nIndex].bIn) 272 { 273 if (pParams[nIndex].bOut) // inout 274 { 275 uno_destructData( pUnoArgs[nIndex], pParamTypeDescr, 0 ); // destroy uno value 276 uno_copyAndConvertData( pUnoArgs[nIndex], pCppArgs[nIndex], pParamTypeDescr, 277 pThis->getBridge()->getCpp2Uno() ); 278 } 279 } 280 else // pure out 281 { 282 uno_copyAndConvertData( pUnoArgs[nIndex], pCppArgs[nIndex], pParamTypeDescr, 283 pThis->getBridge()->getCpp2Uno() ); 284 } 285 // destroy temp cpp param => cpp: every param was constructed 286 uno_destructData( pCppArgs[nIndex], pParamTypeDescr, cpp_release ); 287 288 TYPELIB_DANGER_RELEASE( pParamTypeDescr ); 289 } 290 // return value 291 if (pCppReturn && pUnoReturn != pCppReturn) 292 { 293 uno_copyAndConvertData( pUnoReturn, pCppReturn, pReturnTypeDescr, 294 pThis->getBridge()->getCpp2Uno() ); 295 uno_destructData( pCppReturn, pReturnTypeDescr, cpp_release ); 296 } 297 } 298 catch (...) 299 { 300 // fill uno exception 301 fillUnoException( CPPU_CURRENT_NAMESPACE::__cxa_get_globals()->caughtExceptions, *ppUnoExc, pThis->getBridge()->getCpp2Uno() ); 302 303 // temporary params 304 for ( ; nTempIndizes--; ) 305 { 306 sal_Int32 nIndex = pTempIndizes[nTempIndizes]; 307 // destroy temp cpp param => cpp: every param was constructed 308 uno_destructData( pCppArgs[nIndex], ppTempParamTypeDescr[nTempIndizes], cpp_release ); 309 TYPELIB_DANGER_RELEASE( ppTempParamTypeDescr[nTempIndizes] ); 310 } 311 // return type 312 if (pReturnTypeDescr) 313 TYPELIB_DANGER_RELEASE( pReturnTypeDescr ); 314 } 315 } 316 317 } 318 319 namespace bridges { namespace cpp_uno { namespace shared { 320 321 void unoInterfaceProxyDispatch( 322 uno_Interface * pUnoI, const typelib_TypeDescription * pMemberDescr, 323 void * pReturn, void * pArgs[], uno_Any ** ppException ) 324 { 325 // is my surrogate 326 bridges::cpp_uno::shared::UnoInterfaceProxy * pThis 327 = static_cast< bridges::cpp_uno::shared::UnoInterfaceProxy * >(pUnoI); 328 329 switch (pMemberDescr->eTypeClass) 330 { 331 case typelib_TypeClass_INTERFACE_ATTRIBUTE: 332 { 333 VtableSlot aVtableSlot( 334 getVtableSlot( 335 reinterpret_cast< 336 typelib_InterfaceAttributeTypeDescription const * >( 337 pMemberDescr))); 338 if (pReturn) 339 { 340 // dependent dispatch 341 cpp_call( 342 pThis, aVtableSlot, 343 ((typelib_InterfaceAttributeTypeDescription *)pMemberDescr)->pAttributeTypeRef, 344 0, 0, // no params 345 pReturn, pArgs, ppException ); 346 } 347 else 348 { 349 // is SET 350 typelib_MethodParameter aParam; 351 aParam.pTypeRef = 352 ((typelib_InterfaceAttributeTypeDescription *)pMemberDescr)->pAttributeTypeRef; 353 aParam.bIn = sal_True; 354 aParam.bOut = sal_False; 355 356 typelib_TypeDescriptionReference * pReturnTypeRef = 0; 357 OUString aVoidName( RTL_CONSTASCII_USTRINGPARAM("void") ); 358 typelib_typedescriptionreference_new( 359 &pReturnTypeRef, typelib_TypeClass_VOID, aVoidName.pData ); 360 361 // dependent dispatch 362 aVtableSlot.index += 1; // get, then set method 363 cpp_call( 364 pThis, aVtableSlot, 365 pReturnTypeRef, 366 1, &aParam, 367 pReturn, pArgs, ppException ); 368 369 typelib_typedescriptionreference_release( pReturnTypeRef ); 370 } 371 372 break; 373 } 374 case typelib_TypeClass_INTERFACE_METHOD: 375 { 376 VtableSlot aVtableSlot( 377 getVtableSlot( 378 reinterpret_cast< 379 typelib_InterfaceMethodTypeDescription const * >( 380 pMemberDescr))); 381 switch (aVtableSlot.index) 382 { 383 // standard calls 384 case 1: // acquire uno interface 385 (*pUnoI->acquire)( pUnoI ); 386 *ppException = 0; 387 break; 388 case 2: // release uno interface 389 (*pUnoI->release)( pUnoI ); 390 *ppException = 0; 391 break; 392 case 0: // queryInterface() opt 393 { 394 typelib_TypeDescription * pTD = 0; 395 TYPELIB_DANGER_GET( &pTD, reinterpret_cast< Type * >( pArgs[0] )->getTypeLibType() ); 396 if (pTD) 397 { 398 uno_Interface * pInterface = 0; 399 (*pThis->pBridge->getUnoEnv()->getRegisteredInterface)( 400 pThis->pBridge->getUnoEnv(), 401 (void **)&pInterface, pThis->oid.pData, (typelib_InterfaceTypeDescription *)pTD ); 402 403 if (pInterface) 404 { 405 ::uno_any_construct( 406 reinterpret_cast< uno_Any * >( pReturn ), 407 &pInterface, pTD, 0 ); 408 (*pInterface->release)( pInterface ); 409 TYPELIB_DANGER_RELEASE( pTD ); 410 *ppException = 0; 411 break; 412 } 413 TYPELIB_DANGER_RELEASE( pTD ); 414 } 415 } // else perform queryInterface() 416 default: 417 // dependent dispatch 418 cpp_call( 419 pThis, aVtableSlot, 420 ((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->pReturnTypeRef, 421 ((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->nParams, 422 ((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->pParams, 423 pReturn, pArgs, ppException ); 424 } 425 break; 426 } 427 default: 428 { 429 ::com::sun::star::uno::RuntimeException aExc( 430 OUString( RTL_CONSTASCII_USTRINGPARAM("illegal member type description!") ), 431 ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface >() ); 432 433 Type const & rExcType = ::getCppuType( &aExc ); 434 // binary identical null reference 435 ::uno_type_any_construct( *ppException, &aExc, rExcType.getTypeLibType(), 0 ); 436 } 437 } 438 } 439 440 } } } 441