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 <sys/types.h>
28 #include <sys/malloc.h>
29
30 #include <com/sun/star/uno/genfunc.hxx>
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
41 using namespace ::rtl;
42 using namespace ::com::sun::star::uno;
43
44 namespace
45 {
46
47 //==================================================================================================
callVirtualMethod(void * pAdjustedThisPtr,sal_Int32 nVtableIndex,void * pRegisterReturn,typelib_TypeClass eReturnType,char * pPT,sal_Int32 * pStackLongs,sal_Int32)48 static void callVirtualMethod(
49 void * pAdjustedThisPtr,
50 sal_Int32 nVtableIndex,
51 void * pRegisterReturn,
52 typelib_TypeClass eReturnType,
53 char * pPT,
54 sal_Int32 * pStackLongs,
55 sal_Int32 /* nStackLongs */)
56 {
57
58 // parameter list is mixed list of * and values
59 // reference parameters are pointers
60
61 // the basic idea here is to use gpr[8] as a storage area for
62 // the future values of registers r3 to r10 needed for the call,
63 // and similarly fpr[13] as a storage area for the future values
64 // of floating point registers f1 to f13
65
66 unsigned long * mfunc; // actual function to be invoked
67 void (*ptr)();
68 int gpr[8]; // storage for gpregisters, map to r3-r10
69 int off; // offset used to find function
70 double fpr[13]; // storage for fpregisters, map to f1-f13
71 int n; // number of gprs mapped so far
72 int f; // number of fprs mapped so far
73 volatile long *p; // pointer to parameter overflow area
74 int c; // character of parameter type being decoded
75 volatile double dret; // temporary function return values
76 volatile int iret, iret2;
77
78 // Because of the Power PC calling conventions we could be passing
79 // parameters in both register types and on the stack. To create the
80 // stack parameter area we need we now simply allocate local
81 // variable storage param[] that is at least the size of the parameter stack
82 // (more than enough space) which we can overwrite the parameters into.
83
84 // Note: This keeps us from having to decode the signature twice and
85 // prevents problems with later local variables.
86
87 // FIXME: I do not believe the following is true but we will keep the
88 // FIXME: extra space just to be safe until proven otherwise
89
90 // Note: could require up to 2*nStackLongs words of parameter stack area
91 // if the call has many float parameters (i.e. floats take up only 1
92 // word on the stack but take 2 words in parameter area in the
93 // stack frame .
94
95
96 // unsigned long param[(2*nStackLongs)];
97
98 /* now begin to load the C++ function arguments into storage */
99 n = 0;
100 f = 0;
101
102
103 /* set up a pointer to the stack parameter area */
104 __asm__ ( "addi %0,r1,24" : "=r" (p) : /* no inputs */ );
105
106 // #i94421#, work around compiler error:
107 volatile long * pCopy = p;
108 (void) pCopy; // avoid warning about unused variable
109
110 // never called
111 // if (! pAdjustedThisPtr )CPPU_CURRENT_NAMESPACE::dummy_can_throw_anything("xxx"); // address something
112
113
114 // now we need to parse the entire signature string
115 // until we get the END indicator
116
117 // treat complex return pointer like any other parameter
118
119 // parse the argument list up to the ending )
120
121 while (*pPT != 'X') {
122 c = *pPT;
123 switch (c) {
124
125 case 'D': /* type is double */
126 if (f < 13) {
127 fpr[f++] = *((double *)pStackLongs); /* store in register */
128 n+=2;
129 p+=2;
130 } else {
131 *p++ = *pStackLongs; /* or on the parameter stack */
132 *p++ = *(pStackLongs + 1);
133 }
134 pStackLongs += 2;
135 break;
136
137 case 'F': /* type is float */
138 /* floats are stored as 1 32 bit word on param stack */
139 if (f < 13) {
140 fpr[f++] = *((float *)pStackLongs);
141 n+=1;
142 p++;
143 } else {
144 *((float *)p) = *((float *)pStackLongs);
145 p += 1;
146 }
147 pStackLongs += 1;
148 break;
149
150 case 'H': /* type is long long */
151 if (n < 8)
152 {
153 gpr[n++] = *pStackLongs;
154 p++;
155 }
156 else
157 *p++ = *pStackLongs;
158 if(n < 8)
159 {
160 gpr[n++] = *(pStackLongs+1);
161 p++;
162 }
163 else
164 *p++ = *(pStackLongs+1);
165 pStackLongs += 2;
166 break;
167
168 case 'S':
169 if (n < 8) {
170 gpr[n++] = *((unsigned short*)pStackLongs);
171 p++;
172 } else {
173 *p++ = *((unsigned short *)pStackLongs);
174 }
175 pStackLongs += 1;
176 break;
177
178 case 'B':
179 if (n < 8) {
180 gpr[n++] = *((char *)pStackLongs);
181 p++;
182 } else {
183 *p++ = *((char *)pStackLongs);
184 }
185 pStackLongs += 1;
186 break;
187
188 default:
189 if (n < 8) {
190 gpr[n++] = *pStackLongs;
191 p++;
192 } else {
193 *p++ = *pStackLongs;
194 }
195 pStackLongs += 1;
196 break;
197 }
198 pPT++;
199 }
200
201
202 /* figure out the address of the function we need to invoke */
203 off = nVtableIndex;
204 off = off * 4; // 4 bytes per slot
205 mfunc = *((unsigned long **)pAdjustedThisPtr); // get the address of the vtable
206 mfunc = (unsigned long *)((char *)mfunc + off); // get the address from the vtable entry at offset
207 mfunc = *((unsigned long **)mfunc); // the function is stored at the address
208 ptr = (void (*)())mfunc;
209
210 /* Set up the machine registers and invoke the function */
211
212 __asm__ __volatile__ (
213 "lwz r3, 0(%0)\n\t"
214 "lwz r4, 4(%0)\n\t"
215 "lwz r5, 8(%0)\n\t"
216 "lwz r6, 12(%0)\n\t"
217 "lwz r7, 16(%0)\n\t"
218 "lwz r8, 20(%0)\n\t"
219 "lwz r9, 24(%0)\n\t"
220 "lwz r10, 28(%0)\n\t"
221 "lfd f1, 0(%1)\n\t"
222 "lfd f2, 8(%1)\n\t"
223 "lfd f3, 16(%1)\n\t"
224 "lfd f4, 24(%1)\n\t"
225 "lfd f5, 32(%1)\n\t"
226 "lfd f6, 40(%1)\n\t"
227 "lfd f7, 48(%1)\n\t"
228 "lfd f8, 56(%1)\n\t"
229 "lfd f9, 64(%1)\n\t"
230 "lfd f10, 72(%1)\n\t"
231 "lfd f11, 80(%1)\n\t"
232 "lfd f12, 88(%1)\n\t"
233 "lfd f13, 96(%1)\n\t"
234 : : "r" (gpr), "r" (fpr)
235 : "r0", "r3", "r4", "r5", "r6", "r7", "r8", "r9", "r10",
236 "f1", "f2", "f3", "f4", "f5", "f6", "f7", "f8", "f9",
237 "f10", "f11", "f12", "f13"
238 );
239
240 (*ptr)();
241
242
243 __asm__ __volatile__ (
244 "stw r3, %1\n\t"
245 "stw r4, %2\n\t"
246 "stfd f1, %0\n\t"
247 : : "m" (dret), "m" (iret), "m" (iret2)
248 );
249
250
251 switch( eReturnType )
252 {
253 case typelib_TypeClass_HYPER:
254 case typelib_TypeClass_UNSIGNED_HYPER:
255 ((long*)pRegisterReturn)[1] = iret2;
256 // fall thru on purpose
257 case typelib_TypeClass_LONG:
258 case typelib_TypeClass_UNSIGNED_LONG:
259 case typelib_TypeClass_ENUM:
260 ((long*)pRegisterReturn)[0] = iret;
261 break;
262
263 case typelib_TypeClass_CHAR:
264 case typelib_TypeClass_SHORT:
265 case typelib_TypeClass_UNSIGNED_SHORT:
266 *(unsigned short*)pRegisterReturn = (unsigned short)iret;
267 break;
268
269 case typelib_TypeClass_BOOLEAN:
270 case typelib_TypeClass_BYTE:
271 *(unsigned char*)pRegisterReturn = (unsigned char)iret;
272 break;
273
274 case typelib_TypeClass_FLOAT:
275 *(float*)pRegisterReturn = (float)dret;
276 break;
277
278 case typelib_TypeClass_DOUBLE:
279 *(double*)pRegisterReturn = dret;
280 break;
281 default:
282 break;
283 }
284 }
285
286
287 //==================================================================================================
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)288 static void cpp_call(
289 bridges::cpp_uno::shared::UnoInterfaceProxy * pThis,
290 bridges::cpp_uno::shared::VtableSlot aVtableSlot,
291 typelib_TypeDescriptionReference * pReturnTypeRef,
292 sal_Int32 nParams, typelib_MethodParameter * pParams,
293 void * pUnoReturn, void * pUnoArgs[], uno_Any ** ppUnoExc )
294 {
295 // max space for: [complex ret ptr], values|ptr ...
296 char * pCppStack =
297 (char *)alloca( sizeof(sal_Int32) + ((nParams+2) * sizeof(sal_Int64)) );
298 char * pCppStackStart = pCppStack;
299
300 // need to know parameter types for callVirtualMethod so generate a signature string
301 char * pParamType = (char *) alloca(nParams+2);
302 char * pPT = pParamType;
303
304 // return
305 typelib_TypeDescription * pReturnTypeDescr = 0;
306 TYPELIB_DANGER_GET( &pReturnTypeDescr, pReturnTypeRef );
307 OSL_ENSURE( pReturnTypeDescr, "### expected return type description!" );
308
309 void * pCppReturn = 0; // if != 0 && != pUnoReturn, needs reconversion
310
311 if (pReturnTypeDescr)
312 {
313 if (bridges::cpp_uno::shared::isSimpleType( pReturnTypeDescr ))
314 {
315 pCppReturn = pUnoReturn; // direct way for simple types
316 }
317 else
318 {
319 // complex return via ptr
320 pCppReturn = *(void **)pCppStack
321 = (bridges::cpp_uno::shared::relatesToInterfaceType( pReturnTypeDescr )
322 ? alloca( pReturnTypeDescr->nSize )
323 : pUnoReturn); // direct way
324 *pPT++ = 'C'; //signify that a complex return type on stack
325 pCppStack += sizeof(void *);
326 }
327 }
328 // push this
329 void * pAdjustedThisPtr = reinterpret_cast< void ** >(pThis->getCppI())
330 + aVtableSlot.offset;
331 *(void**)pCppStack = pAdjustedThisPtr;
332 pCppStack += sizeof( void* );
333 *pPT++ = 'I';
334
335 // stack space
336 OSL_ENSURE( sizeof(void *) == sizeof(sal_Int32), "### unexpected size!" );
337 // args
338 void ** pCppArgs = (void **)alloca( 3 * sizeof(void *) * nParams );
339 // indizes of values this have to be converted (interface conversion cpp<=>uno)
340 sal_Int32 * pTempIndizes = (sal_Int32 *)(pCppArgs + nParams);
341 // type descriptions for reconversions
342 typelib_TypeDescription ** ppTempParamTypeDescr = (typelib_TypeDescription **)(pCppArgs + (2 * nParams));
343
344 sal_Int32 nTempIndizes = 0;
345
346 for ( sal_Int32 nPos = 0; nPos < nParams; ++nPos )
347 {
348 const typelib_MethodParameter & rParam = pParams[nPos];
349 typelib_TypeDescription * pParamTypeDescr = 0;
350 TYPELIB_DANGER_GET( &pParamTypeDescr, rParam.pTypeRef );
351
352 if (!rParam.bOut
353 && bridges::cpp_uno::shared::isSimpleType( pParamTypeDescr ))
354 {
355 uno_copyAndConvertData( pCppArgs[nPos] = pCppStack, pUnoArgs[nPos], pParamTypeDescr,
356 pThis->getBridge()->getUno2Cpp() );
357
358 switch (pParamTypeDescr->eTypeClass)
359 {
360
361 // we need to know type of each param so that we know whether to use
362 // gpr or fpr to pass in parameters:
363 // Key: I - int, long, pointer, etc means pass in gpr
364 // B - byte value passed in gpr
365 // S - short value passed in gpr
366 // F - float value pass in fpr
367 // D - double value pass in fpr
368 // H - long long int pass in proper pairs of gpr (3,4) (5,6), etc
369 // X - indicates end of parameter description string
370
371 case typelib_TypeClass_LONG:
372 case typelib_TypeClass_UNSIGNED_LONG:
373 case typelib_TypeClass_ENUM:
374 *pPT++ = 'I';
375 break;
376 case typelib_TypeClass_SHORT:
377 case typelib_TypeClass_CHAR:
378 case typelib_TypeClass_UNSIGNED_SHORT:
379 *pPT++ = 'S';
380 break;
381 case typelib_TypeClass_BOOLEAN:
382 case typelib_TypeClass_BYTE:
383 *pPT++ = 'B';
384 break;
385 case typelib_TypeClass_FLOAT:
386 *pPT++ = 'F';
387 break;
388 case typelib_TypeClass_DOUBLE:
389 *pPT++ = 'D';
390 pCppStack += sizeof(sal_Int32); // extra long
391 break;
392 case typelib_TypeClass_HYPER:
393 case typelib_TypeClass_UNSIGNED_HYPER:
394 *pPT++ = 'H';
395 pCppStack += sizeof(sal_Int32); // extra long
396 default:
397 break;
398 }
399
400 // no longer needed
401 TYPELIB_DANGER_RELEASE( pParamTypeDescr );
402 }
403 else // ptr to complex value | ref
404 {
405 if (! rParam.bIn) // is pure out
406 {
407 // cpp out is constructed mem, uno out is not!
408 uno_constructData(
409 *(void **)pCppStack = pCppArgs[nPos] = alloca( pParamTypeDescr->nSize ),
410 pParamTypeDescr );
411 pTempIndizes[nTempIndizes] = nPos; // default constructed for cpp call
412 // will be released at reconversion
413 ppTempParamTypeDescr[nTempIndizes++] = pParamTypeDescr;
414 }
415 // is in/inout
416 else if (bridges::cpp_uno::shared::relatesToInterfaceType( pParamTypeDescr ))
417 {
418 uno_copyAndConvertData(
419 *(void **)pCppStack = pCppArgs[nPos] = alloca( pParamTypeDescr->nSize ),
420 pUnoArgs[nPos], pParamTypeDescr, pThis->getBridge()->getUno2Cpp() );
421
422 pTempIndizes[nTempIndizes] = nPos; // has to be reconverted
423 // will be released at reconversion
424 ppTempParamTypeDescr[nTempIndizes++] = pParamTypeDescr;
425 }
426 else // direct way
427 {
428 *(void **)pCppStack = pCppArgs[nPos] = pUnoArgs[nPos];
429 // no longer needed
430 TYPELIB_DANGER_RELEASE( pParamTypeDescr );
431 }
432 *pPT++='I';
433 }
434 pCppStack += sizeof(sal_Int32); // standard parameter length
435 }
436
437 // terminate the signature string
438 *pPT++='X';
439 *pPT=0;
440
441 try
442 {
443 OSL_ENSURE( !( (pCppStack - pCppStackStart ) & 3), "UNALIGNED STACK !!! (Please DO panic)" );
444 callVirtualMethod(
445 pAdjustedThisPtr, aVtableSlot.index,
446 pCppReturn, pReturnTypeDescr->eTypeClass, pParamType,
447 (sal_Int32 *)pCppStackStart, (pCppStack - pCppStackStart) / sizeof(sal_Int32) );
448 // NO exception occured...
449 *ppUnoExc = 0;
450
451 // reconvert temporary params
452 for ( ; nTempIndizes--; )
453 {
454 sal_Int32 nIndex = pTempIndizes[nTempIndizes];
455 typelib_TypeDescription * pParamTypeDescr = ppTempParamTypeDescr[nTempIndizes];
456
457 if (pParams[nIndex].bIn)
458 {
459 if (pParams[nIndex].bOut) // inout
460 {
461 uno_destructData( pUnoArgs[nIndex], pParamTypeDescr, 0 ); // destroy uno value
462 uno_copyAndConvertData( pUnoArgs[nIndex], pCppArgs[nIndex], pParamTypeDescr,
463 pThis->getBridge()->getCpp2Uno() );
464 }
465 }
466 else // pure out
467 {
468 uno_copyAndConvertData( pUnoArgs[nIndex], pCppArgs[nIndex], pParamTypeDescr,
469 pThis->getBridge()->getCpp2Uno() );
470 }
471 // destroy temp cpp param => cpp: every param was constructed
472 uno_destructData( pCppArgs[nIndex], pParamTypeDescr, cpp_release );
473
474 TYPELIB_DANGER_RELEASE( pParamTypeDescr );
475 }
476 // return value
477 if (pCppReturn && pUnoReturn != pCppReturn)
478 {
479 uno_copyAndConvertData( pUnoReturn, pCppReturn, pReturnTypeDescr,
480 pThis->getBridge()->getCpp2Uno() );
481 uno_destructData( pCppReturn, pReturnTypeDescr, cpp_release );
482 }
483 }
484 catch (...)
485 {
486 // fill uno exception
487 fillUnoException( CPPU_CURRENT_NAMESPACE::__cxa_get_globals()->caughtExceptions, *ppUnoExc, pThis->getBridge()->getCpp2Uno() );
488
489 // temporary params
490 for ( ; nTempIndizes--; )
491 {
492 sal_Int32 nIndex = pTempIndizes[nTempIndizes];
493 // destroy temp cpp param => cpp: every param was constructed
494 uno_destructData( pCppArgs[nIndex], ppTempParamTypeDescr[nTempIndizes], cpp_release );
495 TYPELIB_DANGER_RELEASE( ppTempParamTypeDescr[nTempIndizes] );
496 }
497 // return type
498 if (pReturnTypeDescr)
499 TYPELIB_DANGER_RELEASE( pReturnTypeDescr );
500 }
501 }
502
503 }
504
505 namespace bridges { namespace cpp_uno { namespace shared {
506
unoInterfaceProxyDispatch(uno_Interface * pUnoI,const typelib_TypeDescription * pMemberDescr,void * pReturn,void * pArgs[],uno_Any ** ppException)507 void unoInterfaceProxyDispatch(
508 uno_Interface * pUnoI, const typelib_TypeDescription * pMemberDescr,
509 void * pReturn, void * pArgs[], uno_Any ** ppException )
510 {
511 // is my surrogate
512 bridges::cpp_uno::shared::UnoInterfaceProxy * pThis
513 = static_cast< bridges::cpp_uno::shared::UnoInterfaceProxy * > (pUnoI);
514 // typelib_InterfaceTypeDescription * pTypeDescr = pThis->pTypeDescr;
515
516 switch (pMemberDescr->eTypeClass)
517 {
518 case typelib_TypeClass_INTERFACE_ATTRIBUTE:
519 {
520
521 VtableSlot aVtableSlot(
522 getVtableSlot(
523 reinterpret_cast<
524 typelib_InterfaceAttributeTypeDescription const * >(
525 pMemberDescr)));
526
527 if (pReturn)
528 {
529 // dependent dispatch
530 cpp_call(
531 pThis, aVtableSlot,
532 ((typelib_InterfaceAttributeTypeDescription *)pMemberDescr)->pAttributeTypeRef,
533 0, 0, // no params
534 pReturn, pArgs, ppException );
535 }
536 else
537 {
538 // is SET
539 typelib_MethodParameter aParam;
540 aParam.pTypeRef =
541 ((typelib_InterfaceAttributeTypeDescription *)pMemberDescr)->pAttributeTypeRef;
542 aParam.bIn = sal_True;
543 aParam.bOut = sal_False;
544
545 typelib_TypeDescriptionReference * pReturnTypeRef = 0;
546 OUString aVoidName( RTL_CONSTASCII_USTRINGPARAM("void") );
547 typelib_typedescriptionreference_new(
548 &pReturnTypeRef, typelib_TypeClass_VOID, aVoidName.pData );
549
550 // dependent dispatch
551 aVtableSlot.index += 1; //get then set method
552 cpp_call(
553 pThis, aVtableSlot,
554 pReturnTypeRef,
555 1, &aParam,
556 pReturn, pArgs, ppException );
557
558 typelib_typedescriptionreference_release( pReturnTypeRef );
559 }
560
561 break;
562 }
563 case typelib_TypeClass_INTERFACE_METHOD:
564 {
565
566 VtableSlot aVtableSlot(
567 getVtableSlot(
568 reinterpret_cast<
569 typelib_InterfaceMethodTypeDescription const * >(
570 pMemberDescr)));
571 switch (aVtableSlot.index)
572 {
573 // standard calls
574 case 1: // acquire uno interface
575 (*pUnoI->acquire)( pUnoI );
576 *ppException = 0;
577 break;
578 case 2: // release uno interface
579 (*pUnoI->release)( pUnoI );
580 *ppException = 0;
581 break;
582 case 0: // queryInterface() opt
583 {
584 typelib_TypeDescription * pTD = 0;
585 TYPELIB_DANGER_GET( &pTD, reinterpret_cast< Type * >( pArgs[0] )->getTypeLibType() );
586 if (pTD)
587 {
588 uno_Interface * pInterface = 0;
589 (*pThis->pBridge->getUnoEnv()->getRegisteredInterface)(
590 pThis->pBridge->getUnoEnv(),
591 (void **)&pInterface, pThis->oid.pData, (typelib_InterfaceTypeDescription *)pTD );
592
593 if (pInterface)
594 {
595 ::uno_any_construct(
596 reinterpret_cast< uno_Any * >( pReturn ),
597 &pInterface, pTD, 0 );
598 (*pInterface->release)( pInterface );
599 TYPELIB_DANGER_RELEASE( pTD );
600 *ppException = 0;
601 break;
602 }
603 TYPELIB_DANGER_RELEASE( pTD );
604 }
605 } // else perform queryInterface()
606 default:
607 // dependent dispatch
608 cpp_call(
609 pThis, aVtableSlot,
610 ((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->pReturnTypeRef,
611 ((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->nParams,
612 ((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->pParams,
613 pReturn, pArgs, ppException );
614 }
615 break;
616 }
617 default:
618 {
619 ::com::sun::star::uno::RuntimeException aExc(
620 OUString( RTL_CONSTASCII_USTRINGPARAM("illegal member type description!") ),
621 ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface >() );
622
623 Type const & rExcType = ::getCppuType( &aExc );
624 // binary identical null reference
625 ::uno_type_any_construct( *ppException, &aExc, rExcType.getTypeLibType(), 0 );
626 }
627 }
628 }
629
630 } } }
631