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 #include <malloc.h>
25 #include <hash_map>
26 
27 #include <rtl/alloc.h>
28 #include <osl/mutex.hxx>
29 
30 #include <com/sun/star/uno/genfunc.hxx>
31 #include "com/sun/star/uno/RuntimeException.hpp"
32 #include <uno/data.h>
33 #include <typelib/typedescription.hxx>
34 
35 #include "bridges/cpp_uno/shared/bridge.hxx"
36 #include "bridges/cpp_uno/shared/cppinterfaceproxy.hxx"
37 #include "bridges/cpp_uno/shared/types.hxx"
38 #include "bridges/cpp_uno/shared/vtablefactory.hxx"
39 
40 #include "share.hxx"
41 
42 #include <dlfcn.h>
43 
44 
45 using namespace ::osl;
46 using namespace ::rtl;
47 using namespace ::com::sun::star::uno;
48 
49 namespace
50 {
51 
cpp2uno_call(bridges::cpp_uno::shared::CppInterfaceProxy * pThis,const typelib_TypeDescription * pMemberTypeDescr,typelib_TypeDescriptionReference * pReturnTypeRef,sal_Int32 nParams,typelib_MethodParameter * pParams,long r8,void ** pCallStack,sal_Int64 * pRegisterReturn)52     static typelib_TypeClass cpp2uno_call(
53         bridges::cpp_uno::shared::CppInterfaceProxy* pThis,
54         const typelib_TypeDescription * pMemberTypeDescr,
55         typelib_TypeDescriptionReference * pReturnTypeRef,
56         sal_Int32 nParams, typelib_MethodParameter * pParams,
57         long r8, void ** pCallStack,
58         sal_Int64 * pRegisterReturn /* space for register return */ )
59     {
60         // pCallStack: ret, [return ptr], this, params
61         char * pTopStack = (char *)(pCallStack + 0);
62         char * pCppStack = pTopStack;
63 #ifdef CMC_DEBUG
64 	fprintf(stderr, "cpp2uno_call\n");
65 #endif
66         // return
67         typelib_TypeDescription * pReturnTypeDescr = 0;
68         if (pReturnTypeRef)
69             TYPELIB_DANGER_GET( &pReturnTypeDescr, pReturnTypeRef );
70 
71         void * pUnoReturn = 0;
72         // complex return ptr: if != 0 && != pUnoReturn, reconversion need
73         void * pCppReturn = 0;
74 
75         if (pReturnTypeDescr)
76         {
77             if (bridges::cpp_uno::shared::isSimpleType( pReturnTypeDescr ))
78             {
79 #ifdef CMC_DEBUG
80 		fprintf(stderr, "simple return\n");
81 #endif
82                 pUnoReturn = pRegisterReturn; // direct way for simple types
83             }
84             else // complex return via ptr (pCppReturn)
85             {
86 #ifdef CMC_DEBUG
87 		fprintf(stderr, "complex return\n");
88 #endif
89                 pCppReturn = (void *)r8;
90 
91                 pUnoReturn = (bridges::cpp_uno::shared::relatesToInterfaceType( pReturnTypeDescr )
92                     ? alloca( pReturnTypeDescr->nSize )
93                     : pCppReturn); // direct way
94             }
95         }
96         // pop this
97         pCppStack += sizeof( void* );
98 
99         // stack space
100         OSL_ENSURE( sizeof(void *) == sizeof(sal_Int32),
101             "### unexpected size!" );
102         // parameters
103         void ** pUnoArgs = (void **)alloca( 4 * sizeof(void *) * nParams );
104         void ** pCppArgs = pUnoArgs + nParams;
105         // indizes of values this have to be converted (interface conversion
106         // cpp<=>uno)
107         sal_Int32 * pTempIndizes = (sal_Int32 *)(pUnoArgs + (2 * nParams));
108         // type descriptions for reconversions
109         typelib_TypeDescription ** ppTempParamTypeDescr =
110             (typelib_TypeDescription **)(pUnoArgs + (3 * nParams));
111 
112         sal_Int32 nTempIndizes   = 0;
113 
114         for ( sal_Int32 nPos = 0; nPos < nParams; ++nPos )
115         {
116             const typelib_MethodParameter & rParam = pParams[nPos];
117             typelib_TypeDescription * pParamTypeDescr = 0;
118             TYPELIB_DANGER_GET( &pParamTypeDescr, rParam.pTypeRef );
119 
120             if (!rParam.bOut &&
121                 bridges::cpp_uno::shared::isSimpleType( pParamTypeDescr ))
122             {
123                 switch (pParamTypeDescr->eTypeClass)
124                 {
125                     case typelib_TypeClass_BYTE:
126                     case typelib_TypeClass_BOOLEAN:
127                 		pCppArgs[nPos] = pCppStack + 3;
128                 		pUnoArgs[nPos] = pCppStack + 3;
129                         break;
130                     case typelib_TypeClass_CHAR:
131                     case typelib_TypeClass_SHORT:
132                     case typelib_TypeClass_UNSIGNED_SHORT:
133                 		pCppArgs[nPos] = pCppStack + 2;
134                 		pUnoArgs[nPos] = pCppStack + 2;
135                         break;
136                     case typelib_TypeClass_HYPER:
137                     case typelib_TypeClass_UNSIGNED_HYPER:
138                     case typelib_TypeClass_DOUBLE:
139                 		pCppArgs[nPos] = pCppStack;
140                 		pUnoArgs[nPos] = pCppStack;
141                         pCppStack += sizeof(sal_Int32); // extra long
142                         break;
143                     default:
144                 		pCppArgs[nPos] = pCppStack;
145                 		pUnoArgs[nPos] = pCppStack;
146                         break;
147                 }
148                 // no longer needed
149                 TYPELIB_DANGER_RELEASE( pParamTypeDescr );
150             }
151             else // ptr to complex value | ref
152             {
153                 pCppArgs[nPos] = *(void **)pCppStack;
154 
155                 if (! rParam.bIn) // is pure out
156                 {
157                     // uno out is unconstructed mem!
158                     pUnoArgs[nPos] = alloca( pParamTypeDescr->nSize );
159                     pTempIndizes[nTempIndizes] = nPos;
160                     // will be released at reconversion
161                     ppTempParamTypeDescr[nTempIndizes++] = pParamTypeDescr;
162                 }
163                 // is in/inout
164                 else if (bridges::cpp_uno::shared::relatesToInterfaceType(
165                     pParamTypeDescr ))
166                 {
167                    uno_copyAndConvertData( pUnoArgs[nPos] = alloca( pParamTypeDescr->nSize ),
168                         *(void **)pCppStack, pParamTypeDescr,
169                         pThis->getBridge()->getCpp2Uno() );
170                     pTempIndizes[nTempIndizes] = nPos; // has to be reconverted
171                     // will be released at reconversion
172                     ppTempParamTypeDescr[nTempIndizes++] = pParamTypeDescr;
173                 }
174                 else // direct way
175                 {
176                     pUnoArgs[nPos] = *(void **)pCppStack;
177                     // no longer needed
178                     TYPELIB_DANGER_RELEASE( pParamTypeDescr );
179                 }
180             }
181             pCppStack += sizeof(sal_Int32); // standard parameter length
182         }
183 
184         // ExceptionHolder
185         uno_Any aUnoExc; // Any will be constructed by callee
186         uno_Any * pUnoExc = &aUnoExc;
187 
188 #ifdef CMC_DEBUG
189 	fprintf(stderr, "before dispatch\n");
190 #endif
191         // invoke uno dispatch call
192         (*pThis->getUnoI()->pDispatcher)(
193           pThis->getUnoI(), pMemberTypeDescr, pUnoReturn, pUnoArgs, &pUnoExc );
194 
195 #ifdef CMC_DEBUG
196 	fprintf(stderr, "after dispatch\n");
197 #endif
198 
199         // in case an exception occured...
200         if (pUnoExc)
201         {
202             // destruct temporary in/inout params
203             for ( ; nTempIndizes--; )
204             {
205                 sal_Int32 nIndex = pTempIndizes[nTempIndizes];
206 
207                 if (pParams[nIndex].bIn) // is in/inout => was constructed
208                     uno_destructData( pUnoArgs[nIndex],
209                         ppTempParamTypeDescr[nTempIndizes], 0 );
210                 TYPELIB_DANGER_RELEASE( ppTempParamTypeDescr[nTempIndizes] );
211             }
212             if (pReturnTypeDescr)
213                 TYPELIB_DANGER_RELEASE( pReturnTypeDescr );
214 
215             CPPU_CURRENT_NAMESPACE::raiseException( &aUnoExc,
216                 pThis->getBridge()->getUno2Cpp() ); // has to destruct the any
217             // is here for dummy
218             return typelib_TypeClass_VOID;
219         }
220         else // else no exception occured...
221         {
222             // temporary params
223             for ( ; nTempIndizes--; )
224             {
225                 sal_Int32 nIndex = pTempIndizes[nTempIndizes];
226                 typelib_TypeDescription * pParamTypeDescr =
227                     ppTempParamTypeDescr[nTempIndizes];
228 
229                 if (pParams[nIndex].bOut) // inout/out
230                 {
231                     // convert and assign
232                     uno_destructData( pCppArgs[nIndex], pParamTypeDescr,
233                         cpp_release );
234                     uno_copyAndConvertData( pCppArgs[nIndex], pUnoArgs[nIndex],
235                         pParamTypeDescr, pThis->getBridge()->getUno2Cpp() );
236                 }
237                 // destroy temp uno param
238                 uno_destructData( pUnoArgs[nIndex], pParamTypeDescr, 0 );
239 
240                 TYPELIB_DANGER_RELEASE( pParamTypeDescr );
241             }
242             // return
243             if (pCppReturn) // has complex return
244             {
245                 if (pUnoReturn != pCppReturn) // needs reconversion
246                 {
247                     uno_copyAndConvertData( pCppReturn, pUnoReturn,
248                         pReturnTypeDescr, pThis->getBridge()->getUno2Cpp() );
249                     // destroy temp uno return
250                     uno_destructData( pUnoReturn, pReturnTypeDescr, 0 );
251                 }
252                 // complex return ptr is set to return reg
253                 *(void **)pRegisterReturn = pCppReturn;
254             }
255             if (pReturnTypeDescr)
256             {
257                 typelib_TypeClass eRet =
258                     (typelib_TypeClass)pReturnTypeDescr->eTypeClass;
259                 TYPELIB_DANGER_RELEASE( pReturnTypeDescr );
260                 return eRet;
261             }
262             else
263                 return typelib_TypeClass_VOID;
264         }
265     }
266 
267 
268     //=====================================================================
cpp_mediate(sal_Int32 nFunctionIndex,sal_Int32 nVtableOffset,long sp,long r8,sal_Int64 * pRegisterReturn)269     static typelib_TypeClass cpp_mediate(
270         sal_Int32 nFunctionIndex, sal_Int32 nVtableOffset,
271         long sp, long r8,
272         sal_Int64 * pRegisterReturn /* space for register return */ )
273     {
274 	void ** pCallStack = (void**)(sp);
275 #ifdef CMC_DEBUG
276 	fprintf(stderr, "cpp_mediate with\n");
277 	fprintf(stderr, "%x %x\n", nFunctionIndex, nVtableOffset);
278 	fprintf(stderr, "and %x %x\n", pCallStack, pRegisterReturn);
279 	fprintf(stderr, "and %x %x\n", pCallStack[0], pCallStack[1]);
280 #endif
281         OSL_ENSURE( sizeof(sal_Int32)==sizeof(void *), "### unexpected!" );
282 
283         void *pThis = pCallStack[0];
284 
285         pThis = static_cast< char * >(pThis) - nVtableOffset;
286 
287         bridges::cpp_uno::shared::CppInterfaceProxy * pCppI =
288             bridges::cpp_uno::shared::CppInterfaceProxy::castInterfaceToProxy(
289                 pThis);
290 
291         typelib_InterfaceTypeDescription * pTypeDescr = pCppI->getTypeDescr();
292 
293         OSL_ENSURE( nFunctionIndex < pTypeDescr->nMapFunctionIndexToMemberIndex,
294             "### illegal vtable index!" );
295         if (nFunctionIndex >= pTypeDescr->nMapFunctionIndexToMemberIndex)
296         {
297             throw RuntimeException(
298                 OUString::createFromAscii("illegal vtable index!"),
299                 (XInterface *)pCppI );
300         }
301 
302         // determine called method
303         OSL_ENSURE( nFunctionIndex < pTypeDescr->nMapFunctionIndexToMemberIndex,
304             "### illegal vtable index!" );
305         sal_Int32 nMemberPos =
306             pTypeDescr->pMapFunctionIndexToMemberIndex[nFunctionIndex];
307         OSL_ENSURE( nMemberPos < pTypeDescr->nAllMembers,
308             "### illegal member index!" );
309 
310         TypeDescription aMemberDescr( pTypeDescr->ppAllMembers[nMemberPos] );
311 
312         typelib_TypeClass eRet;
313         switch (aMemberDescr.get()->eTypeClass)
314         {
315         case typelib_TypeClass_INTERFACE_ATTRIBUTE:
316         {
317             if (pTypeDescr->pMapMemberIndexToFunctionIndex[nMemberPos] ==
318                 nFunctionIndex)
319             {
320                 // is GET method
321                 eRet = cpp2uno_call(
322                     pCppI, aMemberDescr.get(),
323                     ((typelib_InterfaceAttributeTypeDescription *)aMemberDescr.get())->pAttributeTypeRef,
324                     0, 0, // no params
325                     r8, pCallStack, pRegisterReturn );
326             }
327             else
328             {
329                 // is SET method
330                 typelib_MethodParameter aParam;
331                 aParam.pTypeRef =
332                     ((typelib_InterfaceAttributeTypeDescription *)aMemberDescr.get())->pAttributeTypeRef;
333                 aParam.bIn      = sal_True;
334                 aParam.bOut     = sal_False;
335 
336                 eRet = cpp2uno_call(
337                     pCppI, aMemberDescr.get(),
338                     0, // indicates void return
339                     1, &aParam,
340                     r8, pCallStack, pRegisterReturn );
341             }
342             break;
343         }
344         case typelib_TypeClass_INTERFACE_METHOD:
345         {
346             // is METHOD
347             switch (nFunctionIndex)
348             {
349             case 1: // acquire()
350                 pCppI->acquireProxy(); // non virtual call!
351                 eRet = typelib_TypeClass_VOID;
352                 break;
353             case 2: // release()
354                 pCppI->releaseProxy(); // non virtual call!
355                 eRet = typelib_TypeClass_VOID;
356                 break;
357             case 0: // queryInterface() opt
358             {
359                 typelib_TypeDescription * pTD = 0;
360                 TYPELIB_DANGER_GET(&pTD,
361                     reinterpret_cast<Type *>(pCallStack[1])->getTypeLibType());
362                 if (pTD)
363                 {
364                     XInterface * pInterface = 0;
365                     (*pCppI->getBridge()->getCppEnv()->getRegisteredInterface)(
366                         pCppI->getBridge()->getCppEnv(),
367                         (void **)&pInterface, pCppI->getOid().pData,
368                         (typelib_InterfaceTypeDescription *)pTD );
369 
370                     if (pInterface)
371                     {
372                         ::uno_any_construct(
373                             reinterpret_cast< uno_Any * >( r8 ),
374                             &pInterface, pTD, cpp_acquire );
375                         pInterface->release();
376                         TYPELIB_DANGER_RELEASE( pTD );
377                         *(void **)pRegisterReturn = (void*)r8;
378                         eRet = typelib_TypeClass_ANY;
379                         break;
380                     }
381                     TYPELIB_DANGER_RELEASE( pTD );
382                 }
383             } // else perform queryInterface()
384             default:
385                 eRet = cpp2uno_call(
386                     pCppI, aMemberDescr.get(),
387                     ((typelib_InterfaceMethodTypeDescription *)aMemberDescr.get())->pReturnTypeRef,
388                     ((typelib_InterfaceMethodTypeDescription *)aMemberDescr.get())->nParams,
389                     ((typelib_InterfaceMethodTypeDescription *)aMemberDescr.get())->pParams,
390                     r8, pCallStack, pRegisterReturn );
391             }
392             break;
393         }
394         default:
395         {
396             throw RuntimeException(
397                 OUString::createFromAscii("no member description found!"),
398                 (XInterface *)pCppI );
399             // is here for dummy
400             eRet = typelib_TypeClass_VOID;
401         }
402         }
403 
404         return eRet;
405     }
406 }
407 
408 //=======================================================================
409 /**
410  * is called on incoming vtable calls
411  * (called by asm snippets)
412  */
413 
cpp_vtable_call(long firstonstack)414 extern "C" sal_Int64 cpp_vtable_call( long firstonstack )
415 {
416     register long d0 asm("d0");
417     long functionIndex = d0;
418 
419     register long a1 asm("a1");
420     long r8 = a1;
421 
422     register long d1 asm("d1");
423     long vtableOffset = d1;
424 
425     long sp = (long)&firstonstack;
426 
427     sal_Int64 nRegReturn;
428     cpp_mediate( functionIndex, vtableOffset, sp, r8, &nRegReturn );
429     return nRegReturn;
430 }
431 
432 namespace
433 {
434     const int codeSnippetSize = 20;
435 
436     //some m68k info : http://www2.biglobe.ne.jp/~inaba/trampolines.html
437 
codeSnippet(unsigned char * code,sal_Int32 functionIndex,sal_Int32 vtableOffset)438     unsigned char *codeSnippet(unsigned char* code, sal_Int32 functionIndex,
439         sal_Int32 vtableOffset)
440     {
441         unsigned char * p = code;
442     	*(short *)&p[0] = 0x203C;		//movel functionIndex,d0
443     	*(long *)&p[2] = functionIndex;
444     	*(short *)&p[6] = 0x223C;		//movel functionIndex,d1
445     	*(long *)&p[8] = vtableOffset;
446     	*(short *)&p[12] = 0x4EF9;		//jmp cpp_vtable_call
447         *(long *)&p[14] = (long)&cpp_vtable_call;
448     	*(short *)&p[18] = 0x4E71;		//nop
449         return code + codeSnippetSize;
450     }
451 }
452 
453 struct bridges::cpp_uno::shared::VtableFactory::Slot { void * fn; };
454 
455 bridges::cpp_uno::shared::VtableFactory::Slot *
mapBlockToVtable(void * block)456 bridges::cpp_uno::shared::VtableFactory::mapBlockToVtable(void * block)
457 {
458     return static_cast< Slot * >(block) + 2;
459 }
460 
getBlockSize(sal_Int32 slotCount)461 sal_Size bridges::cpp_uno::shared::VtableFactory::getBlockSize(
462     sal_Int32 slotCount)
463 {
464     return (slotCount + 2) * sizeof (Slot) + slotCount * codeSnippetSize;
465 }
466 
467 bridges::cpp_uno::shared::VtableFactory::Slot *
initializeBlock(void * block,sal_Int32 slotCount)468 bridges::cpp_uno::shared::VtableFactory::initializeBlock(
469     void * block, sal_Int32 slotCount)
470 {
471     Slot * slots = mapBlockToVtable(block);
472     slots[-2].fn = 0;
473     slots[-1].fn = 0;
474     return slots + slotCount;
475 }
476 
addLocalFunctions(Slot ** slots,unsigned char * code,sal_PtrDiff writetoexecdiff,typelib_InterfaceTypeDescription const * type,sal_Int32 functionOffset,sal_Int32 functionCount,sal_Int32 vtableOffset)477 unsigned char * bridges::cpp_uno::shared::VtableFactory::addLocalFunctions(
478     Slot ** slots, unsigned char * code, sal_PtrDiff writetoexecdiff,
479     typelib_InterfaceTypeDescription const * type, sal_Int32 functionOffset,
480     sal_Int32 functionCount, sal_Int32 vtableOffset)
481 {
482     (*slots) -= functionCount;
483     Slot * s = *slots;
484     for (sal_Int32 i = 0; i < type->nMembers; ++i)
485     {
486         typelib_TypeDescription * member = 0;
487         TYPELIB_DANGER_GET(&member, type->ppMembers[i]);
488         OSL_ASSERT(member != 0);
489         switch (member->eTypeClass)
490         {
491             case typelib_TypeClass_INTERFACE_ATTRIBUTE:
492                 // Getter:
493                 (s++)->fn = code + writetoexecdiff;
494                 code = codeSnippet(code, functionOffset++, vtableOffset);
495                 // Setter:
496                 if (!reinterpret_cast<
497                     typelib_InterfaceAttributeTypeDescription * >(
498                         member)->bReadOnly)
499                 {
500                     (s++)->fn = code + writetoexecdiff;
501                     code = codeSnippet(code, functionOffset++, vtableOffset);
502                 }
503                 break;
504             case typelib_TypeClass_INTERFACE_METHOD:
505             {
506                 (s++)->fn = code + writetoexecdiff;
507 
508                 typelib_InterfaceMethodTypeDescription *pMethodTD =
509                     reinterpret_cast<
510                         typelib_InterfaceMethodTypeDescription * >(member);
511 
512                 bool issimple = bridges::cpp_uno::shared::isSimpleType(
513                     pMethodTD->pReturnTypeRef);
514 
515                 code = codeSnippet(code, functionOffset++, vtableOffset);
516                 break;
517             }
518         default:
519             OSL_ASSERT(false);
520             break;
521         }
522         TYPELIB_DANGER_RELEASE(member);
523     }
524     return code;
525 }
526 
flushCode(unsigned char const *,unsigned char const *)527 void bridges::cpp_uno::shared::VtableFactory::flushCode(
528     unsigned char const * /*beg*/, unsigned char const * /*end*/)
529 {
530 }
531 
532 /* vi:set tabstop=4 shiftwidth=4 expandtab: */
533