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 <com/sun/star/uno/genfunc.hxx>
28 #include "com/sun/star/uno/RuntimeException.hpp"
29 #include <uno/data.h>
30 #include <sal/alloca.h>
31
32 #include "bridges/cpp_uno/shared/bridge.hxx"
33 #include "bridges/cpp_uno/shared/types.hxx"
34 #include "bridges/cpp_uno/shared/unointerfaceproxy.hxx"
35 #include "bridges/cpp_uno/shared/vtables.hxx"
36
37 #include "share.hxx"
38 #include "smallstruct.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_TypeDescription const * returnType,
58 sal_Int32 * pStackLongs,
59 sal_Int32 nStackLongs ) __attribute__((noinline));
60
callVirtualMethod(void * pAdjustedThisPtr,sal_Int32 nVtableIndex,void * pRegisterReturn,typelib_TypeDescription const * returnType,sal_Int32 * pStackLongs,sal_Int32 nStackLongs)61 void callVirtualMethod(
62 void * pAdjustedThisPtr,
63 sal_Int32 nVtableIndex,
64 void * pRegisterReturn,
65 typelib_TypeDescription const * returnType,
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( returnType->eTypeClass )
112 {
113 case typelib_TypeClass_VOID:
114 break;
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 case typelib_TypeClass_STRUCT:
139 if (bridges::cpp_uno::shared::isSmallStruct(returnType)) {
140 if (returnType->nSize <= 1) {
141 *(unsigned char*)pRegisterReturn = eax;
142 }
143 else if (returnType->nSize <= 2) {
144 *(unsigned short*)pRegisterReturn = eax;
145 }
146 else if (returnType->nSize <= 8) {
147 ((long*)pRegisterReturn)[0] = eax;
148 if (returnType->nSize > 4) {
149 ((long*)pRegisterReturn)[1] = edx;
150 }
151 }
152 }
153 break;
154 default:
155 break;
156 }
157 }
158
159 //==================================================================================================
cpp_call(bridges::cpp_uno::shared::UnoInterfaceProxy * pThis,bridges::cpp_uno::shared::VtableSlot aVtableSlot,typelib_TypeDescriptionReference * pReturnTypeRef,sal_Int32 nParams,typelib_MethodParameter * pParams,void * pUnoReturn,void * pUnoArgs[],uno_Any ** ppUnoExc)160 static void cpp_call(
161 bridges::cpp_uno::shared::UnoInterfaceProxy * pThis,
162 bridges::cpp_uno::shared::VtableSlot aVtableSlot,
163 typelib_TypeDescriptionReference * pReturnTypeRef,
164 sal_Int32 nParams, typelib_MethodParameter * pParams,
165 void * pUnoReturn, void * pUnoArgs[], uno_Any ** ppUnoExc )
166 {
167 // max space for: [complex ret ptr], values|ptr ...
168 char * pCppStack =
169 #ifdef BROKEN_ALLOCA
170 (char *)malloc( sizeof(sal_Int32) + ((nParams+2) * sizeof(sal_Int64)) );
171 #else
172 (char *)alloca( sizeof(sal_Int32) + ((nParams+2) * sizeof(sal_Int64)) );
173 #endif
174 char * pCppStackStart = pCppStack;
175
176 // return
177 typelib_TypeDescription * pReturnTypeDescr = 0;
178 TYPELIB_DANGER_GET( &pReturnTypeDescr, pReturnTypeRef );
179 OSL_ENSURE( pReturnTypeDescr, "### expected return type description!" );
180
181 void * pCppReturn = 0; // if != 0 && != pUnoReturn, needs reconversion
182
183 if (pReturnTypeDescr)
184 {
185 if (bridges::cpp_uno::shared::isSimpleType( pReturnTypeDescr ))
186 {
187 pCppReturn = pUnoReturn; // direct way for simple types
188 }
189 else
190 {
191 // complex return via ptr
192 pCppReturn
193 = (bridges::cpp_uno::shared::relatesToInterfaceType(
194 pReturnTypeDescr )
195 #ifdef BROKEN_ALLOCA
196 ? malloc( pReturnTypeDescr->nSize )
197 #else
198 ? alloca( pReturnTypeDescr->nSize )
199 #endif
200 : pUnoReturn); // direct way
201 if (!bridges::cpp_uno::shared::isSmallStruct(pReturnTypeDescr)) {
202 *(void **)pCppStack = pCppReturn;
203 pCppStack += sizeof(void *);
204 }
205 }
206 }
207 // push this
208 void * pAdjustedThisPtr = reinterpret_cast< void ** >(pThis->getCppI())
209 + aVtableSlot.offset;
210 *(void**)pCppStack = pAdjustedThisPtr;
211 pCppStack += sizeof( void* );
212
213 // stack space
214 OSL_ENSURE( sizeof(void *) == sizeof(sal_Int32), "### unexpected size!" );
215 // args
216 #ifdef BROKEN_ALLOCA
217 void ** pCppArgs = (void **)malloc( 3 * sizeof(void *) * nParams );
218 #else
219 void ** pCppArgs = (void **)alloca( 3 * sizeof(void *) * nParams );
220 #endif
221 // indizes of values this have to be converted (interface conversion cpp<=>uno)
222 sal_Int32 * pTempIndizes = (sal_Int32 *)(pCppArgs + nParams);
223 // type descriptions for reconversions
224 typelib_TypeDescription ** ppTempParamTypeDescr = (typelib_TypeDescription **)(pCppArgs + (2 * nParams));
225
226 sal_Int32 nTempIndizes = 0;
227
228 for ( sal_Int32 nPos = 0; nPos < nParams; ++nPos )
229 {
230 const typelib_MethodParameter & rParam = pParams[nPos];
231 typelib_TypeDescription * pParamTypeDescr = 0;
232 TYPELIB_DANGER_GET( &pParamTypeDescr, rParam.pTypeRef );
233
234 if (!rParam.bOut
235 && bridges::cpp_uno::shared::isSimpleType( pParamTypeDescr ))
236 {
237 uno_copyAndConvertData( pCppArgs[nPos] = pCppStack, pUnoArgs[nPos], pParamTypeDescr,
238 pThis->getBridge()->getUno2Cpp() );
239
240 switch (pParamTypeDescr->eTypeClass)
241 {
242 case typelib_TypeClass_HYPER:
243 case typelib_TypeClass_UNSIGNED_HYPER:
244 case typelib_TypeClass_DOUBLE:
245 pCppStack += sizeof(sal_Int32); // extra long
246 break;
247 default:
248 break;
249 }
250 // no longer needed
251 TYPELIB_DANGER_RELEASE( pParamTypeDescr );
252 }
253 else // ptr to complex value | ref
254 {
255 if (! rParam.bIn) // is pure out
256 {
257 // cpp out is constructed mem, uno out is not!
258 uno_constructData(
259 #ifdef BROKEN_ALLOCA
260 *(void **)pCppStack = pCppArgs[nPos] = malloc( pParamTypeDescr->nSize ),
261 #else
262 *(void **)pCppStack = pCppArgs[nPos] = alloca( pParamTypeDescr->nSize ),
263 #endif
264 pParamTypeDescr );
265 pTempIndizes[nTempIndizes] = nPos; // default constructed for cpp call
266 // will be released at reconversion
267 ppTempParamTypeDescr[nTempIndizes++] = pParamTypeDescr;
268 }
269 // is in/inout
270 else if (bridges::cpp_uno::shared::relatesToInterfaceType(
271 pParamTypeDescr ))
272 {
273 uno_copyAndConvertData(
274 #ifdef BROKEN_ALLOCA
275 *(void **)pCppStack = pCppArgs[nPos] = malloc( pParamTypeDescr->nSize ),
276 #else
277 *(void **)pCppStack = pCppArgs[nPos] = alloca( pParamTypeDescr->nSize ),
278 #endif
279 pUnoArgs[nPos], pParamTypeDescr,
280 pThis->getBridge()->getUno2Cpp() );
281
282 pTempIndizes[nTempIndizes] = nPos; // has to be reconverted
283 // will be released at reconversion
284 ppTempParamTypeDescr[nTempIndizes++] = pParamTypeDescr;
285 }
286 else // direct way
287 {
288 *(void **)pCppStack = pCppArgs[nPos] = pUnoArgs[nPos];
289 // no longer needed
290 TYPELIB_DANGER_RELEASE( pParamTypeDescr );
291 }
292 }
293 pCppStack += sizeof(sal_Int32); // standard parameter length
294 }
295
296 try
297 {
298 OSL_ENSURE( !( (pCppStack - pCppStackStart ) & 3), "UNALIGNED STACK !!! (Please DO panic)" );
299 callVirtualMethod(
300 pAdjustedThisPtr, aVtableSlot.index,
301 pCppReturn, pReturnTypeDescr,
302 (sal_Int32 *)pCppStackStart, (pCppStack - pCppStackStart) / sizeof(sal_Int32) );
303 // NO exception occured...
304 *ppUnoExc = 0;
305
306 // reconvert temporary params
307 for ( ; nTempIndizes--; )
308 {
309 sal_Int32 nIndex = pTempIndizes[nTempIndizes];
310 typelib_TypeDescription * pParamTypeDescr = ppTempParamTypeDescr[nTempIndizes];
311
312 if (pParams[nIndex].bIn)
313 {
314 if (pParams[nIndex].bOut) // inout
315 {
316 uno_destructData( pUnoArgs[nIndex], pParamTypeDescr, 0 ); // destroy uno value
317 uno_copyAndConvertData( pUnoArgs[nIndex], pCppArgs[nIndex], pParamTypeDescr,
318 pThis->getBridge()->getCpp2Uno() );
319 }
320 }
321 else // pure out
322 {
323 uno_copyAndConvertData( pUnoArgs[nIndex], pCppArgs[nIndex], pParamTypeDescr,
324 pThis->getBridge()->getCpp2Uno() );
325 }
326 // destroy temp cpp param => cpp: every param was constructed
327 uno_destructData( pCppArgs[nIndex], pParamTypeDescr, cpp_release );
328 #ifdef BROKEN_ALLOCA
329 free( pCppArgs[nIndex] );
330 #endif
331
332 TYPELIB_DANGER_RELEASE( pParamTypeDescr );
333 }
334 // return value
335 if (pCppReturn && pUnoReturn != pCppReturn)
336 {
337 uno_copyAndConvertData( pUnoReturn, pCppReturn, pReturnTypeDescr,
338 pThis->getBridge()->getCpp2Uno() );
339 uno_destructData( pCppReturn, pReturnTypeDescr, cpp_release );
340 }
341 }
342 catch (...)
343 {
344 // fill uno exception
345 fillUnoException( CPPU_CURRENT_NAMESPACE::__cxa_get_globals()->caughtExceptions, *ppUnoExc, pThis->getBridge()->getCpp2Uno() );
346
347 // temporary params
348 for ( ; nTempIndizes--; )
349 {
350 sal_Int32 nIndex = pTempIndizes[nTempIndizes];
351 // destroy temp cpp param => cpp: every param was constructed
352 uno_destructData( pCppArgs[nIndex], ppTempParamTypeDescr[nTempIndizes], cpp_release );
353 TYPELIB_DANGER_RELEASE( ppTempParamTypeDescr[nTempIndizes] );
354 #ifdef BROKEN_ALLOCA
355 free( pCppArgs[nIndex] );
356 #endif
357 }
358 // return type
359 if (pReturnTypeDescr)
360 TYPELIB_DANGER_RELEASE( pReturnTypeDescr );
361 }
362 if (pCppReturn && pUnoReturn != pCppReturn)
363 {
364 #ifdef BROKEN_ALLOCA
365 free( pCppReturn );
366 #endif
367 }
368 #ifdef BROKEN_ALLOCA
369 free( pCppStackStart );
370 #endif
371 }
372
373 }
374
375 namespace bridges { namespace cpp_uno { namespace shared {
376
unoInterfaceProxyDispatch(uno_Interface * pUnoI,const typelib_TypeDescription * pMemberDescr,void * pReturn,void * pArgs[],uno_Any ** ppException)377 void unoInterfaceProxyDispatch(
378 uno_Interface * pUnoI, const typelib_TypeDescription * pMemberDescr,
379 void * pReturn, void * pArgs[], uno_Any ** ppException )
380 {
381 // is my surrogate
382 bridges::cpp_uno::shared::UnoInterfaceProxy * pThis
383 = static_cast< bridges::cpp_uno::shared::UnoInterfaceProxy * >(pUnoI);
384
385 switch (pMemberDescr->eTypeClass)
386 {
387 case typelib_TypeClass_INTERFACE_ATTRIBUTE:
388 {
389 VtableSlot aVtableSlot(
390 getVtableSlot(
391 reinterpret_cast<
392 typelib_InterfaceAttributeTypeDescription const * >(
393 pMemberDescr)));
394 if (pReturn)
395 {
396 // dependent dispatch
397 cpp_call(
398 pThis, aVtableSlot,
399 ((typelib_InterfaceAttributeTypeDescription *)pMemberDescr)->pAttributeTypeRef,
400 0, 0, // no params
401 pReturn, pArgs, ppException );
402 }
403 else
404 {
405 // is SET
406 typelib_MethodParameter aParam;
407 aParam.pTypeRef =
408 ((typelib_InterfaceAttributeTypeDescription *)pMemberDescr)->pAttributeTypeRef;
409 aParam.bIn = sal_True;
410 aParam.bOut = sal_False;
411
412 typelib_TypeDescriptionReference * pReturnTypeRef = 0;
413 OUString aVoidName( RTL_CONSTASCII_USTRINGPARAM("void") );
414 typelib_typedescriptionreference_new(
415 &pReturnTypeRef, typelib_TypeClass_VOID, aVoidName.pData );
416
417 // dependent dispatch
418 aVtableSlot.index += 1; // get, then set method
419 cpp_call(
420 pThis, aVtableSlot,
421 pReturnTypeRef,
422 1, &aParam,
423 pReturn, pArgs, ppException );
424
425 typelib_typedescriptionreference_release( pReturnTypeRef );
426 }
427
428 break;
429 }
430 case typelib_TypeClass_INTERFACE_METHOD:
431 {
432 VtableSlot aVtableSlot(
433 getVtableSlot(
434 reinterpret_cast<
435 typelib_InterfaceMethodTypeDescription const * >(
436 pMemberDescr)));
437 switch (aVtableSlot.index)
438 {
439 // standard calls
440 case 1: // acquire uno interface
441 (*pUnoI->acquire)( pUnoI );
442 *ppException = 0;
443 break;
444 case 2: // release uno interface
445 (*pUnoI->release)( pUnoI );
446 *ppException = 0;
447 break;
448 case 0: // queryInterface() opt
449 {
450 typelib_TypeDescription * pTD = 0;
451 TYPELIB_DANGER_GET( &pTD, reinterpret_cast< Type * >( pArgs[0] )->getTypeLibType() );
452 if (pTD)
453 {
454 uno_Interface * pInterface = 0;
455 (*pThis->pBridge->getUnoEnv()->getRegisteredInterface)(
456 pThis->pBridge->getUnoEnv(),
457 (void **)&pInterface, pThis->oid.pData, (typelib_InterfaceTypeDescription *)pTD );
458
459 if (pInterface)
460 {
461 ::uno_any_construct(
462 reinterpret_cast< uno_Any * >( pReturn ),
463 &pInterface, pTD, 0 );
464 (*pInterface->release)( pInterface );
465 TYPELIB_DANGER_RELEASE( pTD );
466 *ppException = 0;
467 break;
468 }
469 TYPELIB_DANGER_RELEASE( pTD );
470 }
471 } // else perform queryInterface()
472 default:
473 // dependent dispatch
474 cpp_call(
475 pThis, aVtableSlot,
476 ((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->pReturnTypeRef,
477 ((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->nParams,
478 ((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->pParams,
479 pReturn, pArgs, ppException );
480 }
481 break;
482 }
483 default:
484 {
485 ::com::sun::star::uno::RuntimeException aExc(
486 OUString( RTL_CONSTASCII_USTRINGPARAM("illegal member type description!") ),
487 ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface >() );
488
489 Type const & rExcType = ::getCppuType( &aExc );
490 // binary identical null reference
491 ::uno_type_any_construct( *ppException, &aExc, rExcType.getTypeLibType(), 0 );
492 }
493 }
494 }
495
496 } } }
497