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
29 #include <com/sun/star/uno/genfunc.hxx>
30 #include "com/sun/star/uno/RuntimeException.hpp"
31 #include <uno/data.h>
32
33 #include "bridges/cpp_uno/shared/bridge.hxx"
34 #include "bridges/cpp_uno/shared/types.hxx"
35 #include "bridges/cpp_uno/shared/unointerfaceproxy.hxx"
36 #include "bridges/cpp_uno/shared/vtables.hxx"
37
38 #include "share.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_TypeClass eReturnType,
58 sal_Int32 * pStackLongs,
59 sal_Int32 nStackLongs ) __attribute__((noinline));
60
callVirtualMethod(void * pAdjustedThisPtr,sal_Int32 nVtableIndex,void * pRegisterReturn,typelib_TypeClass eReturnType,sal_Int32 * pStackLongs,sal_Int32 nStackLongs)61 void callVirtualMethod(
62 void * pAdjustedThisPtr,
63 sal_Int32 nVtableIndex,
64 void * pRegisterReturn,
65 typelib_TypeClass eReturnType,
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 // preserve potential 128bit stack alignment
84 "and $0xfffffff0, %%esp\n\t"
85 "mov %0, %%eax\n\t"
86 "lea -4(,%%eax,4), %%eax\n\t"
87 "and $0xf, %%eax\n\t"
88 "sub $0xc, %%eax\n\t"
89 "add %%eax, %%esp\n\t"
90 // copy values
91 "mov %0, %%eax\n\t"
92 "mov %%eax, %%edx\n\t"
93 "dec %%edx\n\t"
94 "shl $2, %%edx\n\t"
95 "add %1, %%edx\n"
96 "Lcopy:\n\t"
97 "pushl 0(%%edx)\n\t"
98 "sub $4, %%edx\n\t"
99 "dec %%eax\n\t"
100 "jne Lcopy\n\t"
101 // do the actual call
102 "mov %2, %%edx\n\t"
103 "mov 0(%%edx), %%edx\n\t"
104 "mov %3, %%eax\n\t"
105 "shl $2, %%eax\n\t"
106 "add %%eax, %%edx\n\t"
107 "mov 0(%%edx), %%edx\n\t"
108 "call *%%edx\n\t"
109 // save return registers
110 "mov %%eax, %4\n\t"
111 "mov %%edx, %5\n\t"
112 // cleanup stack
113 "mov %6, %%esp\n\t"
114 :
115 : "m"(nStackLongs), "m"(pStackLongs), "m"(pAdjustedThisPtr),
116 "m"(nVtableIndex), "m"(eax), "m"(edx), "m"(stackptr)
117 : "eax", "edx" );
118 switch( eReturnType )
119 {
120 case typelib_TypeClass_HYPER:
121 case typelib_TypeClass_UNSIGNED_HYPER:
122 ((long*)pRegisterReturn)[1] = edx;
123 case typelib_TypeClass_LONG:
124 case typelib_TypeClass_UNSIGNED_LONG:
125 case typelib_TypeClass_CHAR:
126 case typelib_TypeClass_ENUM:
127 ((long*)pRegisterReturn)[0] = eax;
128 break;
129 case typelib_TypeClass_SHORT:
130 case typelib_TypeClass_UNSIGNED_SHORT:
131 *(unsigned short*)pRegisterReturn = eax;
132 break;
133 case typelib_TypeClass_BOOLEAN:
134 case typelib_TypeClass_BYTE:
135 *(unsigned char*)pRegisterReturn = eax;
136 break;
137 case typelib_TypeClass_FLOAT:
138 asm ( "fstps %0" : : "m"(*(char *)pRegisterReturn) );
139 break;
140 case typelib_TypeClass_DOUBLE:
141 asm ( "fstpl %0\n\t" : : "m"(*(char *)pRegisterReturn) );
142 break;
143 default:
144 break;
145 }
146 }
147
148 //==================================================================================================
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)149 static void cpp_call(
150 bridges::cpp_uno::shared::UnoInterfaceProxy * pThis,
151 bridges::cpp_uno::shared::VtableSlot aVtableSlot,
152 typelib_TypeDescriptionReference * pReturnTypeRef,
153 sal_Int32 nParams, typelib_MethodParameter * pParams,
154 void * pUnoReturn, void * pUnoArgs[], uno_Any ** ppUnoExc )
155 {
156 // max space for: [complex ret ptr], values|ptr ...
157 char * pCppStack =
158 (char *)alloca( sizeof(sal_Int32) + ((nParams+2) * sizeof(sal_Int64)) );
159 char * pCppStackStart = pCppStack;
160
161 // return
162 typelib_TypeDescription * pReturnTypeDescr = 0;
163 TYPELIB_DANGER_GET( &pReturnTypeDescr, pReturnTypeRef );
164 OSL_ENSURE( pReturnTypeDescr, "### expected return type description!" );
165
166 void * pCppReturn = 0; // if != 0 && != pUnoReturn, needs reconversion
167
168 if (pReturnTypeDescr)
169 {
170 if (bridges::cpp_uno::shared::isSimpleType( pReturnTypeDescr ))
171 {
172 pCppReturn = pUnoReturn; // direct way for simple types
173 }
174 else
175 {
176 // complex return via ptr
177 pCppReturn = *(void **)pCppStack
178 = (bridges::cpp_uno::shared::relatesToInterfaceType(
179 pReturnTypeDescr )
180 ? alloca( pReturnTypeDescr->nSize )
181 : pUnoReturn); // direct way
182 pCppStack += sizeof(void *);
183 }
184 }
185 // push this
186 void * pAdjustedThisPtr = reinterpret_cast< void ** >(pThis->getCppI())
187 + aVtableSlot.offset;
188 *(void**)pCppStack = pAdjustedThisPtr;
189 pCppStack += sizeof( void* );
190
191 // stack space
192 OSL_ENSURE( sizeof(void *) == sizeof(sal_Int32), "### unexpected size!" );
193 // args
194 void ** pCppArgs = (void **)alloca( 3 * sizeof(void *) * nParams );
195 // indizes of values this have to be converted (interface conversion cpp<=>uno)
196 sal_Int32 * pTempIndizes = (sal_Int32 *)(pCppArgs + nParams);
197 // type descriptions for reconversions
198 typelib_TypeDescription ** ppTempParamTypeDescr = (typelib_TypeDescription **)(pCppArgs + (2 * nParams));
199
200 sal_Int32 nTempIndizes = 0;
201
202 for ( sal_Int32 nPos = 0; nPos < nParams; ++nPos )
203 {
204 const typelib_MethodParameter & rParam = pParams[nPos];
205 typelib_TypeDescription * pParamTypeDescr = 0;
206 TYPELIB_DANGER_GET( &pParamTypeDescr, rParam.pTypeRef );
207
208 if (!rParam.bOut
209 && bridges::cpp_uno::shared::isSimpleType( pParamTypeDescr ))
210 {
211 uno_copyAndConvertData( pCppArgs[nPos] = pCppStack, pUnoArgs[nPos], pParamTypeDescr,
212 pThis->getBridge()->getUno2Cpp() );
213
214 switch (pParamTypeDescr->eTypeClass)
215 {
216 case typelib_TypeClass_HYPER:
217 case typelib_TypeClass_UNSIGNED_HYPER:
218 case typelib_TypeClass_DOUBLE:
219 pCppStack += sizeof(sal_Int32); // extra long
220 break;
221 default:
222 break;
223 }
224 // no longer needed
225 TYPELIB_DANGER_RELEASE( pParamTypeDescr );
226 }
227 else // ptr to complex value | ref
228 {
229 if (! rParam.bIn) // is pure out
230 {
231 // cpp out is constructed mem, uno out is not!
232 uno_constructData(
233 *(void **)pCppStack = pCppArgs[nPos] = alloca( pParamTypeDescr->nSize ),
234 pParamTypeDescr );
235 pTempIndizes[nTempIndizes] = nPos; // default constructed for cpp call
236 // will be released at reconversion
237 ppTempParamTypeDescr[nTempIndizes++] = pParamTypeDescr;
238 }
239 // is in/inout
240 else if (bridges::cpp_uno::shared::relatesToInterfaceType(
241 pParamTypeDescr ))
242 {
243 uno_copyAndConvertData(
244 *(void **)pCppStack = pCppArgs[nPos] = alloca( pParamTypeDescr->nSize ),
245 pUnoArgs[nPos], pParamTypeDescr,
246 pThis->getBridge()->getUno2Cpp() );
247
248 pTempIndizes[nTempIndizes] = nPos; // has to be reconverted
249 // will be released at reconversion
250 ppTempParamTypeDescr[nTempIndizes++] = pParamTypeDescr;
251 }
252 else // direct way
253 {
254 *(void **)pCppStack = pCppArgs[nPos] = pUnoArgs[nPos];
255 // no longer needed
256 TYPELIB_DANGER_RELEASE( pParamTypeDescr );
257 }
258 }
259 pCppStack += sizeof(sal_Int32); // standard parameter length
260 }
261
262 try
263 {
264 OSL_ENSURE( !( (pCppStack - pCppStackStart ) & 3), "UNALIGNED STACK !!! (Please DO panic)" );
265 callVirtualMethod(
266 pAdjustedThisPtr, aVtableSlot.index,
267 pCppReturn, pReturnTypeDescr->eTypeClass,
268 (sal_Int32 *)pCppStackStart, (pCppStack - pCppStackStart) / sizeof(sal_Int32) );
269 // NO exception occured...
270 *ppUnoExc = 0;
271
272 // reconvert temporary params
273 for ( ; nTempIndizes--; )
274 {
275 sal_Int32 nIndex = pTempIndizes[nTempIndizes];
276 typelib_TypeDescription * pParamTypeDescr = ppTempParamTypeDescr[nTempIndizes];
277
278 if (pParams[nIndex].bIn)
279 {
280 if (pParams[nIndex].bOut) // inout
281 {
282 uno_destructData( pUnoArgs[nIndex], pParamTypeDescr, 0 ); // destroy uno value
283 uno_copyAndConvertData( pUnoArgs[nIndex], pCppArgs[nIndex], pParamTypeDescr,
284 pThis->getBridge()->getCpp2Uno() );
285 }
286 }
287 else // pure out
288 {
289 uno_copyAndConvertData( pUnoArgs[nIndex], pCppArgs[nIndex], pParamTypeDescr,
290 pThis->getBridge()->getCpp2Uno() );
291 }
292 // destroy temp cpp param => cpp: every param was constructed
293 uno_destructData( pCppArgs[nIndex], pParamTypeDescr, cpp_release );
294
295 TYPELIB_DANGER_RELEASE( pParamTypeDescr );
296 }
297 // return value
298 if (pCppReturn && pUnoReturn != pCppReturn)
299 {
300 uno_copyAndConvertData( pUnoReturn, pCppReturn, pReturnTypeDescr,
301 pThis->getBridge()->getCpp2Uno() );
302 uno_destructData( pCppReturn, pReturnTypeDescr, cpp_release );
303 }
304 }
305 catch (...)
306 {
307 // fill uno exception
308 fillUnoException( CPPU_CURRENT_NAMESPACE::__cxa_get_globals()->caughtExceptions, *ppUnoExc, pThis->getBridge()->getCpp2Uno() );
309
310 // temporary params
311 for ( ; nTempIndizes--; )
312 {
313 sal_Int32 nIndex = pTempIndizes[nTempIndizes];
314 // destroy temp cpp param => cpp: every param was constructed
315 uno_destructData( pCppArgs[nIndex], ppTempParamTypeDescr[nTempIndizes], cpp_release );
316 TYPELIB_DANGER_RELEASE( ppTempParamTypeDescr[nTempIndizes] );
317 }
318 // return type
319 if (pReturnTypeDescr)
320 TYPELIB_DANGER_RELEASE( pReturnTypeDescr );
321 }
322 }
323
324 }
325
326 namespace bridges { namespace cpp_uno { namespace shared {
327
unoInterfaceProxyDispatch(uno_Interface * pUnoI,const typelib_TypeDescription * pMemberDescr,void * pReturn,void * pArgs[],uno_Any ** ppException)328 void unoInterfaceProxyDispatch(
329 uno_Interface * pUnoI, const typelib_TypeDescription * pMemberDescr,
330 void * pReturn, void * pArgs[], uno_Any ** ppException )
331 {
332 // is my surrogate
333 bridges::cpp_uno::shared::UnoInterfaceProxy * pThis
334 = static_cast< bridges::cpp_uno::shared::UnoInterfaceProxy * >(pUnoI);
335
336 switch (pMemberDescr->eTypeClass)
337 {
338 case typelib_TypeClass_INTERFACE_ATTRIBUTE:
339 {
340 VtableSlot aVtableSlot(
341 getVtableSlot(
342 reinterpret_cast<
343 typelib_InterfaceAttributeTypeDescription const * >(
344 pMemberDescr)));
345 if (pReturn)
346 {
347 // dependent dispatch
348 cpp_call(
349 pThis, aVtableSlot,
350 ((typelib_InterfaceAttributeTypeDescription *)pMemberDescr)->pAttributeTypeRef,
351 0, 0, // no params
352 pReturn, pArgs, ppException );
353 }
354 else
355 {
356 // is SET
357 typelib_MethodParameter aParam;
358 aParam.pTypeRef =
359 ((typelib_InterfaceAttributeTypeDescription *)pMemberDescr)->pAttributeTypeRef;
360 aParam.bIn = sal_True;
361 aParam.bOut = sal_False;
362
363 typelib_TypeDescriptionReference * pReturnTypeRef = 0;
364 OUString aVoidName( RTL_CONSTASCII_USTRINGPARAM("void") );
365 typelib_typedescriptionreference_new(
366 &pReturnTypeRef, typelib_TypeClass_VOID, aVoidName.pData );
367
368 // dependent dispatch
369 aVtableSlot.index += 1; // get, then set method
370 cpp_call(
371 pThis, aVtableSlot,
372 pReturnTypeRef,
373 1, &aParam,
374 pReturn, pArgs, ppException );
375
376 typelib_typedescriptionreference_release( pReturnTypeRef );
377 }
378
379 break;
380 }
381 case typelib_TypeClass_INTERFACE_METHOD:
382 {
383 VtableSlot aVtableSlot(
384 getVtableSlot(
385 reinterpret_cast<
386 typelib_InterfaceMethodTypeDescription const * >(
387 pMemberDescr)));
388 switch (aVtableSlot.index)
389 {
390 // standard calls
391 case 1: // acquire uno interface
392 (*pUnoI->acquire)( pUnoI );
393 *ppException = 0;
394 break;
395 case 2: // release uno interface
396 (*pUnoI->release)( pUnoI );
397 *ppException = 0;
398 break;
399 case 0: // queryInterface() opt
400 {
401 typelib_TypeDescription * pTD = 0;
402 TYPELIB_DANGER_GET( &pTD, reinterpret_cast< Type * >( pArgs[0] )->getTypeLibType() );
403 if (pTD)
404 {
405 uno_Interface * pInterface = 0;
406 (*pThis->pBridge->getUnoEnv()->getRegisteredInterface)(
407 pThis->pBridge->getUnoEnv(),
408 (void **)&pInterface, pThis->oid.pData, (typelib_InterfaceTypeDescription *)pTD );
409
410 if (pInterface)
411 {
412 ::uno_any_construct(
413 reinterpret_cast< uno_Any * >( pReturn ),
414 &pInterface, pTD, 0 );
415 (*pInterface->release)( pInterface );
416 TYPELIB_DANGER_RELEASE( pTD );
417 *ppException = 0;
418 break;
419 }
420 TYPELIB_DANGER_RELEASE( pTD );
421 }
422 } // else perform queryInterface()
423 default:
424 // dependent dispatch
425 cpp_call(
426 pThis, aVtableSlot,
427 ((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->pReturnTypeRef,
428 ((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->nParams,
429 ((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->pParams,
430 pReturn, pArgs, ppException );
431 }
432 break;
433 }
434 default:
435 {
436 ::com::sun::star::uno::RuntimeException aExc(
437 OUString( RTL_CONSTASCII_USTRINGPARAM("illegal member type description!") ),
438 ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface >() );
439
440 Type const & rExcType = ::getCppuType( &aExc );
441 // binary identical null reference
442 ::uno_type_any_construct( *ppException, &aExc, rExcType.getTypeLibType(), 0 );
443 }
444 }
445 }
446
447 } } }
448