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 <malloc.h> 28 #include <sal/alloca.h> 29 30 #include <com/sun/star/uno/genfunc.hxx> 31 #include "com/sun/star/uno/RuntimeException.hpp" 32 #include <uno/data.h> 33 34 #include "bridges/cpp_uno/shared/bridge.hxx" 35 #include "bridges/cpp_uno/shared/types.hxx" 36 #include "bridges/cpp_uno/shared/unointerfaceproxy.hxx" 37 #include "bridges/cpp_uno/shared/vtables.hxx" 38 39 #include "share.hxx" 40 41 using namespace ::rtl; 42 using namespace ::com::sun::star::uno; 43 44 namespace 45 { 46 47 //================================================================================================== 48 void callVirtualMethod( 49 void * pAdjustedThisPtr, 50 sal_Int32 nVtableIndex, 51 void * pRegisterReturn, 52 typelib_TypeClass eReturnType, 53 sal_Int32 * pStackLongs, 54 sal_Int32 nStackLongs ) __attribute__((noinline)); 55 56 void callVirtualMethod( 57 void * pAdjustedThisPtr, 58 sal_Int32 nVtableIndex, 59 void * pRegisterReturn, 60 typelib_TypeClass eReturnType, 61 sal_Int32 * pStackLongs, 62 sal_Int32 nStackLongs ) 63 { 64 // parameter list is mixed list of * and values 65 // reference parameters are pointers 66 67 OSL_ENSURE( pStackLongs && pAdjustedThisPtr, "### null ptr!" ); 68 OSL_ENSURE( (sizeof(void *) == 4) && (sizeof(sal_Int32) == 4), "### unexpected size of int!" ); 69 OSL_ENSURE( nStackLongs && pStackLongs, "### no stack in callVirtualMethod !" ); 70 71 // never called 72 if (! pAdjustedThisPtr) CPPU_CURRENT_NAMESPACE::dummy_can_throw_anything("xxx"); // address something 73 74 volatile long edx = 0, eax = 0; // for register returns 75 void * stackptr; 76 asm volatile ( 77 "mov %%esp, %6\n\t" 78 // preserve potential 128bit stack alignment 79 "and $0xfffffff0, %%esp\n\t" 80 "mov %0, %%eax\n\t" 81 "lea -4(,%%eax,4), %%eax\n\t" 82 "and $0xf, %%eax\n\t" 83 "sub $0xc, %%eax\n\t" 84 "add %%eax, %%esp\n\t" 85 // copy values 86 "mov %0, %%eax\n\t" 87 "mov %%eax, %%edx\n\t" 88 "dec %%edx\n\t" 89 "shl $2, %%edx\n\t" 90 "add %1, %%edx\n" 91 "Lcopy:\n\t" 92 "pushl 0(%%edx)\n\t" 93 "sub $4, %%edx\n\t" 94 "dec %%eax\n\t" 95 "jne Lcopy\n\t" 96 // do the actual call 97 "mov %2, %%edx\n\t" 98 "mov 0(%%edx), %%edx\n\t" 99 "mov %3, %%eax\n\t" 100 "shl $2, %%eax\n\t" 101 "add %%eax, %%edx\n\t" 102 "mov 0(%%edx), %%edx\n\t" 103 "call *%%edx\n\t" 104 // save return registers 105 "mov %%eax, %4\n\t" 106 "mov %%edx, %5\n\t" 107 // cleanup stack 108 "mov %6, %%esp\n\t" 109 : 110 : "m"(nStackLongs), "m"(pStackLongs), "m"(pAdjustedThisPtr), 111 "m"(nVtableIndex), "m"(eax), "m"(edx), "m"(stackptr) 112 : "eax", "edx" ); 113 switch( eReturnType ) 114 { 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 } 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 } 214 // no longer needed 215 TYPELIB_DANGER_RELEASE( pParamTypeDescr ); 216 } 217 else // ptr to complex value | ref 218 { 219 if (! rParam.bIn) // is pure out 220 { 221 // cpp out is constructed mem, uno out is not! 222 uno_constructData( 223 *(void **)pCppStack = pCppArgs[nPos] = alloca( pParamTypeDescr->nSize ), 224 pParamTypeDescr ); 225 pTempIndizes[nTempIndizes] = nPos; // default constructed for cpp call 226 // will be released at reconversion 227 ppTempParamTypeDescr[nTempIndizes++] = pParamTypeDescr; 228 } 229 // is in/inout 230 else if (bridges::cpp_uno::shared::relatesToInterfaceType( 231 pParamTypeDescr )) 232 { 233 uno_copyAndConvertData( 234 *(void **)pCppStack = pCppArgs[nPos] = alloca( pParamTypeDescr->nSize ), 235 pUnoArgs[nPos], pParamTypeDescr, 236 pThis->getBridge()->getUno2Cpp() ); 237 238 pTempIndizes[nTempIndizes] = nPos; // has to be reconverted 239 // will be released at reconversion 240 ppTempParamTypeDescr[nTempIndizes++] = pParamTypeDescr; 241 } 242 else // direct way 243 { 244 *(void **)pCppStack = pCppArgs[nPos] = pUnoArgs[nPos]; 245 // no longer needed 246 TYPELIB_DANGER_RELEASE( pParamTypeDescr ); 247 } 248 } 249 pCppStack += sizeof(sal_Int32); // standard parameter length 250 } 251 252 try 253 { 254 OSL_ENSURE( !( (pCppStack - pCppStackStart ) & 3), "UNALIGNED STACK !!! (Please DO panic)" ); 255 callVirtualMethod( 256 pAdjustedThisPtr, aVtableSlot.index, 257 pCppReturn, pReturnTypeDescr->eTypeClass, 258 (sal_Int32 *)pCppStackStart, (pCppStack - pCppStackStart) / sizeof(sal_Int32) ); 259 // NO exception occured... 260 *ppUnoExc = 0; 261 262 // reconvert temporary params 263 for ( ; nTempIndizes--; ) 264 { 265 sal_Int32 nIndex = pTempIndizes[nTempIndizes]; 266 typelib_TypeDescription * pParamTypeDescr = ppTempParamTypeDescr[nTempIndizes]; 267 268 if (pParams[nIndex].bIn) 269 { 270 if (pParams[nIndex].bOut) // inout 271 { 272 uno_destructData( pUnoArgs[nIndex], pParamTypeDescr, 0 ); // destroy uno value 273 uno_copyAndConvertData( pUnoArgs[nIndex], pCppArgs[nIndex], pParamTypeDescr, 274 pThis->getBridge()->getCpp2Uno() ); 275 } 276 } 277 else // pure out 278 { 279 uno_copyAndConvertData( pUnoArgs[nIndex], pCppArgs[nIndex], pParamTypeDescr, 280 pThis->getBridge()->getCpp2Uno() ); 281 } 282 // destroy temp cpp param => cpp: every param was constructed 283 uno_destructData( pCppArgs[nIndex], pParamTypeDescr, cpp_release ); 284 285 TYPELIB_DANGER_RELEASE( pParamTypeDescr ); 286 } 287 // return value 288 if (pCppReturn && pUnoReturn != pCppReturn) 289 { 290 uno_copyAndConvertData( pUnoReturn, pCppReturn, pReturnTypeDescr, 291 pThis->getBridge()->getCpp2Uno() ); 292 uno_destructData( pCppReturn, pReturnTypeDescr, cpp_release ); 293 } 294 } 295 catch (...) 296 { 297 // fill uno exception 298 fillUnoException( CPPU_CURRENT_NAMESPACE::__cxa_get_globals()->caughtExceptions, *ppUnoExc, pThis->getBridge()->getCpp2Uno() ); 299 300 // temporary params 301 for ( ; nTempIndizes--; ) 302 { 303 sal_Int32 nIndex = pTempIndizes[nTempIndizes]; 304 // destroy temp cpp param => cpp: every param was constructed 305 uno_destructData( pCppArgs[nIndex], ppTempParamTypeDescr[nTempIndizes], cpp_release ); 306 TYPELIB_DANGER_RELEASE( ppTempParamTypeDescr[nTempIndizes] ); 307 } 308 // return type 309 if (pReturnTypeDescr) 310 TYPELIB_DANGER_RELEASE( pReturnTypeDescr ); 311 } 312 } 313 314 } 315 316 namespace bridges { namespace cpp_uno { namespace shared { 317 318 void unoInterfaceProxyDispatch( 319 uno_Interface * pUnoI, const typelib_TypeDescription * pMemberDescr, 320 void * pReturn, void * pArgs[], uno_Any ** ppException ) 321 { 322 // is my surrogate 323 bridges::cpp_uno::shared::UnoInterfaceProxy * pThis 324 = static_cast< bridges::cpp_uno::shared::UnoInterfaceProxy * >(pUnoI); 325 typelib_InterfaceTypeDescription * pTypeDescr = pThis->pTypeDescr; 326 327 switch (pMemberDescr->eTypeClass) 328 { 329 case typelib_TypeClass_INTERFACE_ATTRIBUTE: 330 { 331 VtableSlot aVtableSlot( 332 getVtableSlot( 333 reinterpret_cast< 334 typelib_InterfaceAttributeTypeDescription const * >( 335 pMemberDescr))); 336 if (pReturn) 337 { 338 // dependent dispatch 339 cpp_call( 340 pThis, aVtableSlot, 341 ((typelib_InterfaceAttributeTypeDescription *)pMemberDescr)->pAttributeTypeRef, 342 0, 0, // no params 343 pReturn, pArgs, ppException ); 344 } 345 else 346 { 347 // is SET 348 typelib_MethodParameter aParam; 349 aParam.pTypeRef = 350 ((typelib_InterfaceAttributeTypeDescription *)pMemberDescr)->pAttributeTypeRef; 351 aParam.bIn = sal_True; 352 aParam.bOut = sal_False; 353 354 typelib_TypeDescriptionReference * pReturnTypeRef = 0; 355 OUString aVoidName( RTL_CONSTASCII_USTRINGPARAM("void") ); 356 typelib_typedescriptionreference_new( 357 &pReturnTypeRef, typelib_TypeClass_VOID, aVoidName.pData ); 358 359 // dependent dispatch 360 aVtableSlot.index += 1; // get, then set method 361 cpp_call( 362 pThis, aVtableSlot, 363 pReturnTypeRef, 364 1, &aParam, 365 pReturn, pArgs, ppException ); 366 367 typelib_typedescriptionreference_release( pReturnTypeRef ); 368 } 369 370 break; 371 } 372 case typelib_TypeClass_INTERFACE_METHOD: 373 { 374 VtableSlot aVtableSlot( 375 getVtableSlot( 376 reinterpret_cast< 377 typelib_InterfaceMethodTypeDescription const * >( 378 pMemberDescr))); 379 switch (aVtableSlot.index) 380 { 381 // standard calls 382 case 1: // acquire uno interface 383 (*pUnoI->acquire)( pUnoI ); 384 *ppException = 0; 385 break; 386 case 2: // release uno interface 387 (*pUnoI->release)( pUnoI ); 388 *ppException = 0; 389 break; 390 case 0: // queryInterface() opt 391 { 392 typelib_TypeDescription * pTD = 0; 393 TYPELIB_DANGER_GET( &pTD, reinterpret_cast< Type * >( pArgs[0] )->getTypeLibType() ); 394 if (pTD) 395 { 396 uno_Interface * pInterface = 0; 397 (*pThis->pBridge->getUnoEnv()->getRegisteredInterface)( 398 pThis->pBridge->getUnoEnv(), 399 (void **)&pInterface, pThis->oid.pData, (typelib_InterfaceTypeDescription *)pTD ); 400 401 if (pInterface) 402 { 403 ::uno_any_construct( 404 reinterpret_cast< uno_Any * >( pReturn ), 405 &pInterface, pTD, 0 ); 406 (*pInterface->release)( pInterface ); 407 TYPELIB_DANGER_RELEASE( pTD ); 408 *ppException = 0; 409 break; 410 } 411 TYPELIB_DANGER_RELEASE( pTD ); 412 } 413 } // else perform queryInterface() 414 default: 415 // dependent dispatch 416 cpp_call( 417 pThis, aVtableSlot, 418 ((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->pReturnTypeRef, 419 ((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->nParams, 420 ((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->pParams, 421 pReturn, pArgs, ppException ); 422 } 423 break; 424 } 425 default: 426 { 427 ::com::sun::star::uno::RuntimeException aExc( 428 OUString( RTL_CONSTASCII_USTRINGPARAM("illegal member type description!") ), 429 ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface >() ); 430 431 Type const & rExcType = ::getCppuType( &aExc ); 432 // binary identical null reference 433 ::uno_type_any_construct( *ppException, &aExc, rExcType.getTypeLibType(), 0 ); 434 } 435 } 436 } 437 438 } } } 439