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 <typeinfo> 28 #include <exception> 29 #include <cstddef> 30 #include <cxxabi.h> 31 #include <stdlib.h> 32 33 #include <com/sun/star/uno/genfunc.hxx> 34 #include "com/sun/star/uno/RuntimeException.hpp" 35 #include <uno/data.h> 36 37 #include "bridges/cpp_uno/shared/bridge.hxx" 38 #include "bridges/cpp_uno/shared/types.hxx" 39 #include "bridges/cpp_uno/shared/unointerfaceproxy.hxx" 40 #include "bridges/cpp_uno/shared/vtables.hxx" 41 42 #include "share.hxx" 43 44 using namespace ::rtl; 45 using namespace ::com::sun::star::uno; 46 47 namespace 48 { 49 50 //================================================================================================== 51 // The call instruction within the asm section of callVirtualMethod may throw 52 // exceptions. So that the compiler handles this correctly, it is important 53 // that (a) callVirtualMethod might call dummy_can_throw_anything (although this 54 // never happens at runtime), which in turn can throw exceptions, and (b) 55 // callVirtualMethod is not inlined at its call site (so that any exceptions are 56 // caught which are thrown from the instruction calling callVirtualMethod): 57 void callVirtualMethod( 58 void * pAdjustedThisPtr, 59 sal_Int32 nVtableIndex, 60 void * pRegisterReturn, 61 typelib_TypeClass eReturnType, 62 sal_Int32 * pStackLongs, 63 sal_Int32 nStackLongs ) __attribute__((noinline)); 64 65 void callVirtualMethod( 66 void * pAdjustedThisPtr, 67 sal_Int32 nVtableIndex, 68 void * pRegisterReturn, 69 typelib_TypeClass eReturnType, 70 sal_Int32 * pStackLongs, 71 sal_Int32 nStackLongs ) 72 { 73 // parameter list is mixed list of * and values 74 // reference parameters are pointers 75 76 OSL_ENSURE( pStackLongs && pAdjustedThisPtr, "### null ptr!" ); 77 OSL_ENSURE( (sizeof(void *) == 4) && (sizeof(sal_Int32) == 4), "### unexpected size of int!" ); 78 OSL_ENSURE( nStackLongs && pStackLongs, "### no stack in callVirtualMethod !" ); 79 80 // never called 81 if (! pAdjustedThisPtr) CPPU_CURRENT_NAMESPACE::dummy_can_throw_anything("xxx"); // address something 82 83 volatile long edx = 0, eax = 0; // for register returns 84 void * stackptr; 85 asm volatile ( 86 "mov %%esp, %6\n\t" 87 // preserve potential 128bit stack alignment 88 "and $0xfffffff0, %%esp\n\t" 89 "mov %0, %%eax\n\t" 90 "lea -4(,%%eax,4), %%eax\n\t" 91 "and $0xf, %%eax\n\t" 92 "sub $0xc, %%eax\n\t" 93 "add %%eax, %%esp\n\t" 94 // copy values 95 "mov %0, %%eax\n\t" 96 "mov %%eax, %%edx\n\t" 97 "dec %%edx\n\t" 98 "shl $2, %%edx\n\t" 99 "add %1, %%edx\n" 100 "Lcopy:\n\t" 101 "pushl 0(%%edx)\n\t" 102 "sub $4, %%edx\n\t" 103 "dec %%eax\n\t" 104 "jne Lcopy\n\t" 105 // do the actual call 106 "mov %2, %%edx\n\t" 107 "mov 0(%%edx), %%edx\n\t" 108 "mov %3, %%eax\n\t" 109 "shl $2, %%eax\n\t" 110 "add %%eax, %%edx\n\t" 111 "mov 0(%%edx), %%edx\n\t" 112 "call *%%edx\n\t" 113 // save return registers 114 "mov %%eax, %4\n\t" 115 "mov %%edx, %5\n\t" 116 // cleanup stack 117 "mov %6, %%esp\n\t" 118 : 119 : "m"(nStackLongs), "m"(pStackLongs), "m"(pAdjustedThisPtr), 120 "m"(nVtableIndex), "m"(eax), "m"(edx), "m"(stackptr) 121 : "eax", "edx" ); 122 switch( eReturnType ) 123 { 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 break; 149 } 150 } 151 152 //================================================================================================== 153 static void cpp_call( 154 bridges::cpp_uno::shared::UnoInterfaceProxy * pThis, 155 bridges::cpp_uno::shared::VtableSlot aVtableSlot, 156 typelib_TypeDescriptionReference * pReturnTypeRef, 157 sal_Int32 nParams, typelib_MethodParameter * pParams, 158 void * pUnoReturn, void * pUnoArgs[], uno_Any ** ppUnoExc ) 159 { 160 // max space for: [complex ret ptr], values|ptr ... 161 char * pCppStack = 162 (char *)alloca( sizeof(sal_Int32) + ((nParams+2) * sizeof(sal_Int64)) ); 163 char * pCppStackStart = pCppStack; 164 165 // return 166 typelib_TypeDescription * pReturnTypeDescr = 0; 167 TYPELIB_DANGER_GET( &pReturnTypeDescr, pReturnTypeRef ); 168 OSL_ENSURE( pReturnTypeDescr, "### expected return type description!" ); 169 170 void * pCppReturn = 0; // if != 0 && != pUnoReturn, needs reconversion 171 172 if (pReturnTypeDescr) 173 { 174 if (bridges::cpp_uno::shared::isSimpleType( pReturnTypeDescr )) 175 { 176 pCppReturn = pUnoReturn; // direct way for simple types 177 } 178 else 179 { 180 // complex return via ptr 181 pCppReturn = *(void **)pCppStack 182 = (bridges::cpp_uno::shared::relatesToInterfaceType( 183 pReturnTypeDescr ) 184 ? alloca( pReturnTypeDescr->nSize ) 185 : pUnoReturn); // direct way 186 pCppStack += sizeof(void *); 187 } 188 } 189 // push this 190 void * pAdjustedThisPtr = reinterpret_cast< void ** >(pThis->getCppI()) 191 + aVtableSlot.offset; 192 *(void**)pCppStack = pAdjustedThisPtr; 193 pCppStack += sizeof( void* ); 194 195 // stack space 196 OSL_ENSURE( sizeof(void *) == sizeof(sal_Int32), "### unexpected size!" ); 197 // args 198 void ** pCppArgs = (void **)alloca( 3 * sizeof(void *) * nParams ); 199 // indizes of values this have to be converted (interface conversion cpp<=>uno) 200 sal_Int32 * pTempIndizes = (sal_Int32 *)(pCppArgs + nParams); 201 // type descriptions for reconversions 202 typelib_TypeDescription ** ppTempParamTypeDescr = (typelib_TypeDescription **)(pCppArgs + (2 * nParams)); 203 204 sal_Int32 nTempIndizes = 0; 205 206 for ( sal_Int32 nPos = 0; nPos < nParams; ++nPos ) 207 { 208 const typelib_MethodParameter & rParam = pParams[nPos]; 209 typelib_TypeDescription * pParamTypeDescr = 0; 210 TYPELIB_DANGER_GET( &pParamTypeDescr, rParam.pTypeRef ); 211 212 if (!rParam.bOut 213 && bridges::cpp_uno::shared::isSimpleType( pParamTypeDescr )) 214 { 215 uno_copyAndConvertData( pCppArgs[nPos] = pCppStack, pUnoArgs[nPos], pParamTypeDescr, 216 pThis->getBridge()->getUno2Cpp() ); 217 218 switch (pParamTypeDescr->eTypeClass) 219 { 220 case typelib_TypeClass_HYPER: 221 case typelib_TypeClass_UNSIGNED_HYPER: 222 case typelib_TypeClass_DOUBLE: 223 pCppStack += sizeof(sal_Int32); // extra long 224 break; 225 default: 226 break; 227 } 228 // no longer needed 229 TYPELIB_DANGER_RELEASE( pParamTypeDescr ); 230 } 231 else // ptr to complex value | ref 232 { 233 if (! rParam.bIn) // is pure out 234 { 235 // cpp out is constructed mem, uno out is not! 236 uno_constructData( 237 *(void **)pCppStack = pCppArgs[nPos] = alloca( pParamTypeDescr->nSize ), 238 pParamTypeDescr ); 239 pTempIndizes[nTempIndizes] = nPos; // default constructed for cpp call 240 // will be released at reconversion 241 ppTempParamTypeDescr[nTempIndizes++] = pParamTypeDescr; 242 } 243 // is in/inout 244 else if (bridges::cpp_uno::shared::relatesToInterfaceType( 245 pParamTypeDescr )) 246 { 247 uno_copyAndConvertData( 248 *(void **)pCppStack = pCppArgs[nPos] = alloca( pParamTypeDescr->nSize ), 249 pUnoArgs[nPos], pParamTypeDescr, 250 pThis->getBridge()->getUno2Cpp() ); 251 252 pTempIndizes[nTempIndizes] = nPos; // has to be reconverted 253 // will be released at reconversion 254 ppTempParamTypeDescr[nTempIndizes++] = pParamTypeDescr; 255 } 256 else // direct way 257 { 258 *(void **)pCppStack = pCppArgs[nPos] = pUnoArgs[nPos]; 259 // no longer needed 260 TYPELIB_DANGER_RELEASE( pParamTypeDescr ); 261 } 262 } 263 pCppStack += sizeof(sal_Int32); // standard parameter length 264 } 265 266 try 267 { 268 OSL_ENSURE( !( (pCppStack - pCppStackStart ) & 3), "UNALIGNED STACK !!! (Please DO panic)" ); 269 callVirtualMethod( 270 pAdjustedThisPtr, aVtableSlot.index, 271 pCppReturn, pReturnTypeDescr->eTypeClass, 272 (sal_Int32 *)pCppStackStart, (pCppStack - pCppStackStart) / sizeof(sal_Int32) ); 273 // NO exception occurred... 274 *ppUnoExc = 0; 275 276 // reconvert temporary params 277 for ( ; nTempIndizes--; ) 278 { 279 sal_Int32 nIndex = pTempIndizes[nTempIndizes]; 280 typelib_TypeDescription * pParamTypeDescr = ppTempParamTypeDescr[nTempIndizes]; 281 282 if (pParams[nIndex].bIn) 283 { 284 if (pParams[nIndex].bOut) // inout 285 { 286 uno_destructData( pUnoArgs[nIndex], pParamTypeDescr, 0 ); // destroy uno value 287 uno_copyAndConvertData( pUnoArgs[nIndex], pCppArgs[nIndex], pParamTypeDescr, 288 pThis->getBridge()->getCpp2Uno() ); 289 } 290 } 291 else // pure out 292 { 293 uno_copyAndConvertData( pUnoArgs[nIndex], pCppArgs[nIndex], pParamTypeDescr, 294 pThis->getBridge()->getCpp2Uno() ); 295 } 296 // destroy temp cpp param => cpp: every param was constructed 297 uno_destructData( pCppArgs[nIndex], pParamTypeDescr, cpp_release ); 298 299 TYPELIB_DANGER_RELEASE( pParamTypeDescr ); 300 } 301 // return value 302 if (pCppReturn && pUnoReturn != pCppReturn) 303 { 304 uno_copyAndConvertData( pUnoReturn, pCppReturn, pReturnTypeDescr, 305 pThis->getBridge()->getCpp2Uno() ); 306 uno_destructData( pCppReturn, pReturnTypeDescr, cpp_release ); 307 } 308 } 309 catch (...) 310 { 311 // fill uno exception 312 CPPU_CURRENT_NAMESPACE::fillUnoException( CPPU_CURRENT_NAMESPACE::__INTERNAL__cxa_get_globals()->caughtExceptions, *ppUnoExc, pThis->getBridge()->getCpp2Uno() ); 313 314 // temporary params 315 for ( ; nTempIndizes--; ) 316 { 317 sal_Int32 nIndex = pTempIndizes[nTempIndizes]; 318 // destroy temp cpp param => cpp: every param was constructed 319 uno_destructData( pCppArgs[nIndex], ppTempParamTypeDescr[nTempIndizes], cpp_release ); 320 TYPELIB_DANGER_RELEASE( ppTempParamTypeDescr[nTempIndizes] ); 321 } 322 // return type 323 if (pReturnTypeDescr) 324 TYPELIB_DANGER_RELEASE( pReturnTypeDescr ); 325 } 326 } 327 328 } 329 330 namespace bridges { namespace cpp_uno { namespace shared { 331 332 void unoInterfaceProxyDispatch( 333 uno_Interface * pUnoI, const typelib_TypeDescription * pMemberDescr, 334 void * pReturn, void * pArgs[], uno_Any ** ppException ) 335 { 336 // is my surrogate 337 bridges::cpp_uno::shared::UnoInterfaceProxy * pThis 338 = static_cast< bridges::cpp_uno::shared::UnoInterfaceProxy * >(pUnoI); 339 340 switch (pMemberDescr->eTypeClass) 341 { 342 case typelib_TypeClass_INTERFACE_ATTRIBUTE: 343 { 344 VtableSlot aVtableSlot( 345 getVtableSlot( 346 reinterpret_cast< 347 typelib_InterfaceAttributeTypeDescription const * >( 348 pMemberDescr))); 349 if (pReturn) 350 { 351 // dependent dispatch 352 cpp_call( 353 pThis, aVtableSlot, 354 ((typelib_InterfaceAttributeTypeDescription *)pMemberDescr)->pAttributeTypeRef, 355 0, 0, // no params 356 pReturn, pArgs, ppException ); 357 } 358 else 359 { 360 // is SET 361 typelib_MethodParameter aParam; 362 aParam.pTypeRef = 363 ((typelib_InterfaceAttributeTypeDescription *)pMemberDescr)->pAttributeTypeRef; 364 aParam.bIn = sal_True; 365 aParam.bOut = sal_False; 366 367 typelib_TypeDescriptionReference * pReturnTypeRef = 0; 368 OUString aVoidName( RTL_CONSTASCII_USTRINGPARAM("void") ); 369 typelib_typedescriptionreference_new( 370 &pReturnTypeRef, typelib_TypeClass_VOID, aVoidName.pData ); 371 372 // dependent dispatch 373 aVtableSlot.index += 1; // get, then set method 374 cpp_call( 375 pThis, aVtableSlot, 376 pReturnTypeRef, 377 1, &aParam, 378 pReturn, pArgs, ppException ); 379 380 typelib_typedescriptionreference_release( pReturnTypeRef ); 381 } 382 383 break; 384 } 385 case typelib_TypeClass_INTERFACE_METHOD: 386 { 387 VtableSlot aVtableSlot( 388 getVtableSlot( 389 reinterpret_cast< 390 typelib_InterfaceMethodTypeDescription const * >( 391 pMemberDescr))); 392 switch (aVtableSlot.index) 393 { 394 // standard calls 395 case 1: // acquire uno interface 396 (*pUnoI->acquire)( pUnoI ); 397 *ppException = 0; 398 break; 399 case 2: // release uno interface 400 (*pUnoI->release)( pUnoI ); 401 *ppException = 0; 402 break; 403 case 0: // queryInterface() opt 404 { 405 typelib_TypeDescription * pTD = 0; 406 TYPELIB_DANGER_GET( &pTD, reinterpret_cast< Type * >( pArgs[0] )->getTypeLibType() ); 407 if (pTD) 408 { 409 uno_Interface * pInterface = 0; 410 (*pThis->pBridge->getUnoEnv()->getRegisteredInterface)( 411 pThis->pBridge->getUnoEnv(), 412 (void **)&pInterface, pThis->oid.pData, (typelib_InterfaceTypeDescription *)pTD ); 413 414 if (pInterface) 415 { 416 ::uno_any_construct( 417 reinterpret_cast< uno_Any * >( pReturn ), 418 &pInterface, pTD, 0 ); 419 (*pInterface->release)( pInterface ); 420 TYPELIB_DANGER_RELEASE( pTD ); 421 *ppException = 0; 422 break; 423 } 424 TYPELIB_DANGER_RELEASE( pTD ); 425 } 426 } // else perform queryInterface() 427 default: 428 // dependent dispatch 429 cpp_call( 430 pThis, aVtableSlot, 431 ((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->pReturnTypeRef, 432 ((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->nParams, 433 ((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->pParams, 434 pReturn, pArgs, ppException ); 435 } 436 break; 437 } 438 default: 439 { 440 ::com::sun::star::uno::RuntimeException aExc( 441 OUString( RTL_CONSTASCII_USTRINGPARAM("illegal member type description!") ), 442 ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface >() ); 443 444 Type const & rExcType = ::getCppuType( &aExc ); 445 // binary identical null reference 446 ::uno_type_any_construct( *ppException, &aExc, rExcType.getTypeLibType(), 0 ); 447 } 448 } 449 } 450 451 } } } 452