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 <hash_map>
28
29 #include <sal/alloca.h>
30 #include <rtl/alloc.h>
31 #include <osl/mutex.hxx>
32
33 #include <uno/data.h>
34 #include <typelib/typedescription.hxx>
35
36 #include <bridges/cpp_uno/bridge.hxx>
37 #include <bridges/cpp_uno/type_misc.hxx>
38
39 #include "share.hxx"
40
41
42 using namespace ::osl;
43 using namespace ::rtl;
44 using namespace ::com::sun::star::uno;
45
46 namespace CPPU_CURRENT_NAMESPACE
47 {
48
49 //==================================================================================================
50 rtl_StandardModuleCount g_moduleCount = MODULE_COUNT_INIT;
51
52 //==================================================================================================
cpp2uno_call(cppu_cppInterfaceProxy * pThis,const typelib_TypeDescription * pMemberTypeDescr,typelib_TypeDescriptionReference * pReturnTypeRef,sal_Int32 nParams,typelib_MethodParameter * pParams,void ** pCallStack,sal_Int64 * pRegisterReturn)53 static typelib_TypeClass cpp2uno_call(
54 cppu_cppInterfaceProxy * pThis,
55 const typelib_TypeDescription * pMemberTypeDescr,
56 typelib_TypeDescriptionReference * pReturnTypeRef, // 0 indicates void return
57 sal_Int32 nParams, typelib_MethodParameter * pParams,
58 void ** pCallStack,
59 sal_Int64 * pRegisterReturn /* space for register return */ )
60 {
61 // pCallStack: ret, [return ptr], this, params
62 char * pCppStack = (char *)(pCallStack +1);
63
64 // return
65 typelib_TypeDescription * pReturnTypeDescr = 0;
66 if (pReturnTypeRef)
67 TYPELIB_DANGER_GET( &pReturnTypeDescr, pReturnTypeRef );
68
69 void * pUnoReturn = 0;
70 void * pCppReturn = 0; // complex return ptr: if != 0 && != pUnoReturn, reconversion need
71
72 if (pReturnTypeDescr)
73 {
74 if (cppu_isSimpleType( pReturnTypeDescr ))
75 {
76 pUnoReturn = pRegisterReturn; // direct way for simple types
77 }
78 else // complex return via ptr (pCppReturn)
79 {
80 pCppReturn = *(void **)pCppStack;
81 pCppStack += sizeof(void *);
82
83 pUnoReturn = (cppu_relatesToInterface( pReturnTypeDescr )
84 ? alloca( pReturnTypeDescr->nSize )
85 : pCppReturn); // direct way
86 }
87 }
88 // pop this
89 pCppStack += sizeof( void* );
90
91 // stack space
92 OSL_ENSURE( sizeof(void *) == sizeof(sal_Int32), "### unexpected size!" );
93 // parameters
94 void ** pUnoArgs = (void **)alloca( 4 * sizeof(void *) * nParams );
95 void ** pCppArgs = pUnoArgs + nParams;
96 // indizes of values this have to be converted (interface conversion cpp<=>uno)
97 sal_Int32 * pTempIndizes = (sal_Int32 *)(pUnoArgs + (2 * nParams));
98 // type descriptions for reconversions
99 typelib_TypeDescription ** ppTempParamTypeDescr = (typelib_TypeDescription **)(pUnoArgs + (3 * nParams));
100
101 sal_Int32 nTempIndizes = 0;
102
103 for ( sal_Int32 nPos = 0; nPos < nParams; ++nPos )
104 {
105 const typelib_MethodParameter & rParam = pParams[nPos];
106 typelib_TypeDescription * pParamTypeDescr = 0;
107 TYPELIB_DANGER_GET( &pParamTypeDescr, rParam.pTypeRef );
108
109 if (!rParam.bOut && cppu_isSimpleType( pParamTypeDescr )) // value
110 {
111 pCppArgs[nPos] = pCppStack;
112 pUnoArgs[nPos] = pCppStack;
113 switch (pParamTypeDescr->eTypeClass)
114 {
115 case typelib_TypeClass_HYPER:
116 case typelib_TypeClass_UNSIGNED_HYPER:
117 case typelib_TypeClass_DOUBLE:
118 pCppStack += sizeof(sal_Int32); // extra long
119 }
120 // no longer needed
121 TYPELIB_DANGER_RELEASE( pParamTypeDescr );
122 }
123 else // ptr to complex value | ref
124 {
125 pCppArgs[nPos] = *(void **)pCppStack;
126
127 if (! rParam.bIn) // is pure out
128 {
129 // uno out is unconstructed mem!
130 pUnoArgs[nPos] = alloca( pParamTypeDescr->nSize );
131 pTempIndizes[nTempIndizes] = nPos;
132 // will be released at reconversion
133 ppTempParamTypeDescr[nTempIndizes++] = pParamTypeDescr;
134 }
135 // is in/inout
136 else if (cppu_relatesToInterface( pParamTypeDescr ))
137 {
138 uno_copyAndConvertData( pUnoArgs[nPos] = alloca( pParamTypeDescr->nSize ),
139 *(void **)pCppStack, pParamTypeDescr,
140 &pThis->pBridge->aCpp2Uno );
141 pTempIndizes[nTempIndizes] = nPos; // has to be reconverted
142 // will be released at reconversion
143 ppTempParamTypeDescr[nTempIndizes++] = pParamTypeDescr;
144 }
145 else // direct way
146 {
147 pUnoArgs[nPos] = *(void **)pCppStack;
148 // no longer needed
149 TYPELIB_DANGER_RELEASE( pParamTypeDescr );
150 }
151 }
152 pCppStack += sizeof(sal_Int32); // standard parameter length
153 }
154
155 // ExceptionHolder
156 uno_Any aUnoExc; // Any will be constructed by callee
157 uno_Any * pUnoExc = &aUnoExc;
158
159 // invoke uno dispatch call
160 (*pThis->pUnoI->pDispatcher)( pThis->pUnoI, pMemberTypeDescr, pUnoReturn, pUnoArgs, &pUnoExc );
161
162 // in case an exception occured...
163 if (pUnoExc)
164 {
165 // destruct temporary in/inout params
166 for ( ; nTempIndizes--; )
167 {
168 sal_Int32 nIndex = pTempIndizes[nTempIndizes];
169
170 if (pParams[nIndex].bIn) // is in/inout => was constructed
171 uno_destructData( pUnoArgs[nIndex], ppTempParamTypeDescr[nTempIndizes], 0 );
172 TYPELIB_DANGER_RELEASE( ppTempParamTypeDescr[nTempIndizes] );
173 }
174 if (pReturnTypeDescr)
175 TYPELIB_DANGER_RELEASE( pReturnTypeDescr );
176
177 raiseException( &aUnoExc, &pThis->pBridge->aUno2Cpp ); // has to destruct the any
178 // is here for dummy
179 return typelib_TypeClass_VOID;
180 }
181 else // else no exception occured...
182 {
183 // temporary params
184 for ( ; nTempIndizes--; )
185 {
186 sal_Int32 nIndex = pTempIndizes[nTempIndizes];
187 typelib_TypeDescription * pParamTypeDescr = ppTempParamTypeDescr[nTempIndizes];
188
189 if (pParams[nIndex].bOut) // inout/out
190 {
191 // convert and assign
192 uno_destructData( pCppArgs[nIndex], pParamTypeDescr, cpp_release );
193 uno_copyAndConvertData( pCppArgs[nIndex], pUnoArgs[nIndex], pParamTypeDescr,
194 &pThis->pBridge->aUno2Cpp );
195 }
196 // destroy temp uno param
197 uno_destructData( pUnoArgs[nIndex], pParamTypeDescr, 0 );
198
199 TYPELIB_DANGER_RELEASE( pParamTypeDescr );
200 }
201 // return
202 if (pCppReturn) // has complex return
203 {
204 if (pUnoReturn != pCppReturn) // needs reconversion
205 {
206 uno_copyAndConvertData( pCppReturn, pUnoReturn, pReturnTypeDescr,
207 &pThis->pBridge->aUno2Cpp );
208 // destroy temp uno return
209 uno_destructData( pUnoReturn, pReturnTypeDescr, 0 );
210 }
211 // complex return ptr is set to eax
212 *(void **)pRegisterReturn = pCppReturn;
213 }
214 if (pReturnTypeDescr)
215 {
216 typelib_TypeClass eRet = (typelib_TypeClass)pReturnTypeDescr->eTypeClass;
217 TYPELIB_DANGER_RELEASE( pReturnTypeDescr );
218 return eRet;
219 }
220 else
221 return typelib_TypeClass_VOID;
222 }
223 }
224
225
226 //==================================================================================================
cpp_mediate(sal_Int32 nVtableCall,void ** pCallStack,sal_Int64 * pRegisterReturn)227 static typelib_TypeClass cpp_mediate(
228 sal_Int32 nVtableCall,
229 void ** pCallStack,
230 sal_Int64 * pRegisterReturn /* space for register return */ )
231 {
232 OSL_ENSURE( sizeof(sal_Int32)==sizeof(void *), "### unexpected!" );
233
234 // pCallStack: ret adr, [ret *], this, params
235 // _this_ ptr is patched cppu_XInterfaceProxy object
236 cppu_cppInterfaceProxy * pCppI = NULL;
237 if( nVtableCall & 0x80000000 )
238 {
239 nVtableCall &= 0x7fffffff;
240 pCppI = (cppu_cppInterfaceProxy *)(XInterface *)*(pCallStack +2);
241 }
242 else
243 {
244 pCppI = (cppu_cppInterfaceProxy *)(XInterface *)*(pCallStack +1);
245 }
246
247 typelib_InterfaceTypeDescription * pTypeDescr = pCppI->pTypeDescr;
248
249 OSL_ENSURE( nVtableCall < pTypeDescr->nMapFunctionIndexToMemberIndex, "### illegal vtable index!" );
250 if (nVtableCall >= pTypeDescr->nMapFunctionIndexToMemberIndex)
251 {
252 throw RuntimeException(
253 OUString::createFromAscii("illegal vtable index!"),
254 (XInterface *)pCppI );
255 }
256
257 // determine called method
258 OSL_ENSURE( nVtableCall < pTypeDescr->nMapFunctionIndexToMemberIndex, "### illegal vtable index!" );
259 sal_Int32 nMemberPos = pTypeDescr->pMapFunctionIndexToMemberIndex[nVtableCall];
260 OSL_ENSURE( nMemberPos < pTypeDescr->nAllMembers, "### illegal member index!" );
261
262 TypeDescription aMemberDescr( pTypeDescr->ppAllMembers[nMemberPos] );
263
264 typelib_TypeClass eRet;
265 switch (aMemberDescr.get()->eTypeClass)
266 {
267 case typelib_TypeClass_INTERFACE_ATTRIBUTE:
268 {
269 if (pTypeDescr->pMapMemberIndexToFunctionIndex[nMemberPos] == nVtableCall)
270 {
271 // is GET method
272 eRet = cpp2uno_call(
273 pCppI, aMemberDescr.get(),
274 ((typelib_InterfaceAttributeTypeDescription *)aMemberDescr.get())->pAttributeTypeRef,
275 0, 0, // no params
276 pCallStack, pRegisterReturn );
277 }
278 else
279 {
280 // is SET method
281 typelib_MethodParameter aParam;
282 aParam.pTypeRef =
283 ((typelib_InterfaceAttributeTypeDescription *)aMemberDescr.get())->pAttributeTypeRef;
284 aParam.bIn = sal_True;
285 aParam.bOut = sal_False;
286
287 eRet = cpp2uno_call(
288 pCppI, aMemberDescr.get(),
289 0, // indicates void return
290 1, &aParam,
291 pCallStack, pRegisterReturn );
292 }
293 break;
294 }
295 case typelib_TypeClass_INTERFACE_METHOD:
296 {
297 // is METHOD
298 switch (nVtableCall)
299 {
300 case 1: // acquire()
301 pCppI->acquireProxy(); // non virtual call!
302 eRet = typelib_TypeClass_VOID;
303 break;
304 case 2: // release()
305 pCppI->releaseProxy(); // non virtual call!
306 eRet = typelib_TypeClass_VOID;
307 break;
308 case 0: // queryInterface() opt
309 {
310 typelib_TypeDescription * pTD = 0;
311 TYPELIB_DANGER_GET( &pTD, reinterpret_cast< Type * >( pCallStack[3] )->getTypeLibType() );
312 if (pTD)
313 {
314 XInterface * pInterface = 0;
315 (*pCppI->pBridge->pCppEnv->getRegisteredInterface)(
316 pCppI->pBridge->pCppEnv,
317 (void **)&pInterface, pCppI->oid.pData, (typelib_InterfaceTypeDescription *)pTD );
318
319 if (pInterface)
320 {
321 ::uno_any_construct(
322 reinterpret_cast< uno_Any * >( pCallStack[1] ),
323 &pInterface, pTD, cpp_acquire );
324 pInterface->release();
325 TYPELIB_DANGER_RELEASE( pTD );
326 *(void **)pRegisterReturn = pCallStack[1];
327 eRet = typelib_TypeClass_ANY;
328 break;
329 }
330 TYPELIB_DANGER_RELEASE( pTD );
331 }
332 } // else perform queryInterface()
333 default:
334 eRet = cpp2uno_call(
335 pCppI, aMemberDescr.get(),
336 ((typelib_InterfaceMethodTypeDescription *)aMemberDescr.get())->pReturnTypeRef,
337 ((typelib_InterfaceMethodTypeDescription *)aMemberDescr.get())->nParams,
338 ((typelib_InterfaceMethodTypeDescription *)aMemberDescr.get())->pParams,
339 pCallStack, pRegisterReturn );
340 }
341 break;
342 }
343 default:
344 {
345 throw RuntimeException(
346 OUString::createFromAscii("no member description found!"),
347 (XInterface *)pCppI );
348 // is here for dummy
349 eRet = typelib_TypeClass_VOID;
350 }
351 }
352
353 return eRet;
354 }
355
356 //==================================================================================================
357 /**
358 * is called on incoming vtable calls
359 * (called by asm snippets)
360 */
361 static void cpp_vtable_call( int nTableEntry, void** pCallStack ) __attribute__((regparm(2)));
362
cpp_vtable_call(int nTableEntry,void ** pCallStack)363 void cpp_vtable_call( int nTableEntry, void** pCallStack )
364 {
365 volatile long nRegReturn[2];
366 typelib_TypeClass aType = cpp_mediate( nTableEntry, pCallStack, (sal_Int64*)nRegReturn );
367
368 switch( aType )
369 {
370 case typelib_TypeClass_HYPER:
371 case typelib_TypeClass_UNSIGNED_HYPER:
372 __asm__( "movl %1, %%edx\n\t"
373 "movl %0, %%eax\n"
374 : : "m"(nRegReturn[0]), "m"(nRegReturn[1]) );
375 break;
376 case typelib_TypeClass_FLOAT:
377 __asm__( "flds %0\n\t"
378 "fstp %%st(0)\n\t"
379 "flds %0\n"
380 : : "m"(*(float *)nRegReturn) );
381 break;
382 case typelib_TypeClass_DOUBLE:
383 __asm__( "fldl %0\n\t"
384 "fstp %%st(0)\n\t"
385 "fldl %0\n"
386 : : "m"(*(double *)nRegReturn) );
387 break;
388 // case typelib_TypeClass_UNSIGNED_SHORT:
389 // case typelib_TypeClass_SHORT:
390 // __asm__( "movswl %0, %%eax\n"
391 // : : "m"(nRegReturn) );
392 // break;
393 default:
394 __asm__( "movl %0, %%eax\n"
395 : : "m"(nRegReturn[0]) );
396 break;
397 }
398 }
399
400
401 //==================================================================================================
402 class MediateClassData
403 {
404 typedef ::std::hash_map< OUString, void *, OUStringHash > t_classdata_map;
405 t_classdata_map m_map;
406 Mutex m_mutex;
407
408 public:
409 void const * get_vtable( typelib_InterfaceTypeDescription * pTD ) SAL_THROW( () );
410
411 inline MediateClassData() SAL_THROW( () )
412 {}
413 ~MediateClassData() SAL_THROW( () );
414 };
415 //__________________________________________________________________________________________________
~MediateClassData()416 MediateClassData::~MediateClassData() SAL_THROW( () )
417 {
418 OSL_TRACE( "> calling ~MediateClassData(): freeing mediate vtables." );
419
420 for ( t_classdata_map::const_iterator iPos( m_map.begin() ); iPos != m_map.end(); ++iPos )
421 {
422 ::rtl_freeMemory( iPos->second );
423 }
424 }
425 //--------------------------------------------------------------------------------------------------
codeSnippet(char * code,sal_uInt32 vtable_pos,bool simple_ret_type)426 static inline void codeSnippet( char * code, sal_uInt32 vtable_pos, bool simple_ret_type ) SAL_THROW( () )
427 {
428 if (! simple_ret_type)
429 vtable_pos |= 0x80000000;
430 OSL_ASSERT( sizeof (long) == 4 );
431 // mov $nPos, %eax
432 *code++ = 0xb8;
433 *(long *)code = vtable_pos;
434 code += sizeof (long);
435 // mov %esp, %edx
436 *code++ = 0x89;
437 *code++ = 0xe2;
438 // jmp cpp_vtable_call
439 *code++ = 0xe9;
440 *(long *)code = ((char *)cpp_vtable_call) - code - sizeof (long);
441 }
442 //__________________________________________________________________________________________________
get_vtable(typelib_InterfaceTypeDescription * pTD)443 void const * MediateClassData::get_vtable( typelib_InterfaceTypeDescription * pTD ) SAL_THROW( () )
444 {
445 void * buffer;
446
447 // avoiding locked counts
448 OUString const & unoName = *(OUString const *)&((typelib_TypeDescription *)pTD)->pTypeName;
449 {
450 MutexGuard aGuard( m_mutex );
451 t_classdata_map::const_iterator iFind( m_map.find( unoName ) );
452 if (iFind == m_map.end())
453 {
454 // create new vtable
455 sal_Int32 nSlots = pTD->nMapFunctionIndexToMemberIndex;
456 buffer = ::rtl_allocateMemory( ((2+ nSlots) * sizeof (void *)) + (nSlots *20) );
457
458 ::std::pair< t_classdata_map::iterator, bool > insertion(
459 m_map.insert( t_classdata_map::value_type( unoName, buffer ) ) );
460 OSL_ENSURE( insertion.second, "### inserting new vtable buffer failed?!" );
461
462 void ** slots = (void **)buffer;
463 *slots++ = 0;
464 *slots++ = 0; // rtti
465 char * code = (char *)(slots + nSlots);
466
467 sal_uInt32 vtable_pos = 0;
468 sal_Int32 nAllMembers = pTD->nAllMembers;
469 typelib_TypeDescriptionReference ** ppAllMembers = pTD->ppAllMembers;
470 for ( sal_Int32 nPos = 0; nPos < nAllMembers; ++nPos )
471 {
472 typelib_TypeDescription * pTD = 0;
473 TYPELIB_DANGER_GET( &pTD, ppAllMembers[ nPos ] );
474 OSL_ASSERT( pTD );
475 if (typelib_TypeClass_INTERFACE_ATTRIBUTE == pTD->eTypeClass)
476 {
477 bool simple_ret = cppu_isSimpleType(
478 ((typelib_InterfaceAttributeTypeDescription *)pTD)->pAttributeTypeRef->eTypeClass );
479 // get method
480 *slots++ = code;
481 codeSnippet( code, vtable_pos++, simple_ret );
482 code += 20;
483 if (! ((typelib_InterfaceAttributeTypeDescription *)pTD)->bReadOnly)
484 {
485 // set method
486 *slots++ = code;
487 codeSnippet( code, vtable_pos++, true );
488 code += 20;
489 }
490 }
491 else
492 {
493 bool simple_ret = cppu_isSimpleType(
494 ((typelib_InterfaceMethodTypeDescription *)pTD)->pReturnTypeRef->eTypeClass );
495 *slots++ = code;
496 codeSnippet( code, vtable_pos++, simple_ret );
497 code += 20;
498 }
499 TYPELIB_DANGER_RELEASE( pTD );
500 }
501 OSL_ASSERT( vtable_pos == nSlots );
502 }
503 else
504 {
505 buffer = iFind->second;
506 }
507 }
508
509 return ((void **)buffer +2);
510 }
511
512 //==================================================================================================
cppu_cppInterfaceProxy_patchVtable(XInterface * pCppI,typelib_InterfaceTypeDescription * pTypeDescr)513 void SAL_CALL cppu_cppInterfaceProxy_patchVtable(
514 XInterface * pCppI, typelib_InterfaceTypeDescription * pTypeDescr ) throw ()
515 {
516 static MediateClassData * s_pMediateClassData = 0;
517 if (! s_pMediateClassData)
518 {
519 MutexGuard aGuard( Mutex::getGlobalMutex() );
520 if (! s_pMediateClassData)
521 {
522 #ifdef LEAK_STATIC_DATA
523 s_pMediateClassData = new MediateClassData();
524 #else
525 static MediateClassData s_aMediateClassData;
526 s_pMediateClassData = &s_aMediateClassData;
527 #endif
528 }
529 }
530 *(void const **)pCppI = s_pMediateClassData->get_vtable( pTypeDescr );
531 }
532
533 }
534
535 extern "C"
536 {
537 //##################################################################################################
component_canUnload(TimeValue * pTime)538 sal_Bool SAL_CALL component_canUnload( TimeValue * pTime )
539 SAL_THROW_EXTERN_C()
540 {
541 return CPPU_CURRENT_NAMESPACE::g_moduleCount.canUnload(
542 &CPPU_CURRENT_NAMESPACE::g_moduleCount, pTime );
543 }
544 //##################################################################################################
uno_initEnvironment(uno_Environment * pCppEnv)545 void SAL_CALL uno_initEnvironment( uno_Environment * pCppEnv )
546 SAL_THROW_EXTERN_C()
547 {
548 CPPU_CURRENT_NAMESPACE::cppu_cppenv_initEnvironment(
549 pCppEnv );
550 }
551 //##################################################################################################
uno_ext_getMapping(uno_Mapping ** ppMapping,uno_Environment * pFrom,uno_Environment * pTo)552 void SAL_CALL uno_ext_getMapping(
553 uno_Mapping ** ppMapping, uno_Environment * pFrom, uno_Environment * pTo )
554 SAL_THROW_EXTERN_C()
555 {
556 CPPU_CURRENT_NAMESPACE::cppu_ext_getMapping(
557 ppMapping, pFrom, pTo );
558 }
559 }
560