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