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[LibreOffice.git] / bridges / source / cpp_uno / gcc3_solaris_intel / cpp2uno.cxx
blob0c73b56758430e3fda2d89b5b6b06cd5faad9cae
1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 /*************************************************************************
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28
29
30 #include <sal/alloca.h>
31 #include <strings.h>
32
33 #include <com/sun/star/uno/genfunc.hxx>
34 #include "com/sun/star/uno/RuntimeException.hpp"
35 #include <uno/data.h>
36 #include <typelib/typedescription.hxx>
37
38 #include "bridges/cpp_uno/shared/bridge.hxx"
39 #include "bridges/cpp_uno/shared/cppinterfaceproxy.hxx"
40 #include "bridges/cpp_uno/shared/types.hxx"
41 #include "bridges/cpp_uno/shared/vtablefactory.hxx"
42
43 #include "share.hxx"
44
45 using namespace ::com::sun::star::uno;
46
47 namespace
48 {
49
50 //==================================================================================================
51 static typelib_TypeClass cpp2uno_call(
52 bridges::cpp_uno::shared::CppInterfaceProxy * pThis,
53 const typelib_TypeDescription * pMemberTypeDescr,
54 typelib_TypeDescriptionReference * pReturnTypeRef, // 0 indicates void return
55 sal_Int32 nParams, typelib_MethodParameter * pParams,
56 void ** pCallStack,
57 sal_Int64 * pRegisterReturn /* space for register return */ )
58 {
59 // pCallStack: ret, [return ptr], this, params
60 char * pCppStack = (char *)(pCallStack +1);
61
62 // return
63 typelib_TypeDescription * pReturnTypeDescr = 0;
64 if (pReturnTypeRef)
65 TYPELIB_DANGER_GET( &pReturnTypeDescr, pReturnTypeRef );
66
67 void * pUnoReturn = 0;
68 void * pCppReturn = 0; // complex return ptr: if != 0 && != pUnoReturn, reconversion need
69
70 if (pReturnTypeDescr)
71 {
72 if (bridges::cpp_uno::shared::isSimpleType( pReturnTypeDescr ))
73 {
74 pUnoReturn = pRegisterReturn; // direct way for simple types
75 }
76 else // complex return via ptr (pCppReturn)
77 {
78 pCppReturn = *(void **)pCppStack;
79 pCppStack += sizeof(void *);
80
81 pUnoReturn = (bridges::cpp_uno::shared::relatesToInterfaceType(
82 pReturnTypeDescr )
83 ? alloca( pReturnTypeDescr->nSize )
84 : pCppReturn); // direct way
85 }
86 }
87 // pop this
88 pCppStack += sizeof( void* );
89
90 // stack space
91 OSL_ENSURE( sizeof(void *) == sizeof(sal_Int32), "### unexpected size!" );
92 // parameters
93 void ** pUnoArgs = (void **)alloca( 4 * sizeof(void *) * nParams );
94 void ** pCppArgs = pUnoArgs + nParams;
95 // indizes of values this have to be converted (interface conversion cpp<=>uno)
96 sal_Int32 * pTempIndizes = (sal_Int32 *)(pUnoArgs + (2 * nParams));
97 // type descriptions for reconversions
98 typelib_TypeDescription ** ppTempParamTypeDescr = (typelib_TypeDescription **)(pUnoArgs + (3 * nParams));
99
100 sal_Int32 nTempIndizes = 0;
101
102 for ( sal_Int32 nPos = 0; nPos < nParams; ++nPos )
103 {
104 const typelib_MethodParameter & rParam = pParams[nPos];
105 typelib_TypeDescription * pParamTypeDescr = 0;
106 TYPELIB_DANGER_GET( &pParamTypeDescr, rParam.pTypeRef );
107
108 if (!rParam.bOut
109 && bridges::cpp_uno::shared::isSimpleType( pParamTypeDescr ))
110 // value
111 {
112 pCppArgs[nPos] = pCppStack;
113 pUnoArgs[nPos] = pCppStack;
114 switch (pParamTypeDescr->eTypeClass)
115 {
116 case typelib_TypeClass_HYPER:
117 case typelib_TypeClass_UNSIGNED_HYPER:
118 case typelib_TypeClass_DOUBLE:
119 pCppStack += sizeof(sal_Int32); // extra long
120 }
121 // no longer needed
122 TYPELIB_DANGER_RELEASE( pParamTypeDescr );
123 }
124 else // ptr to complex value | ref
125 {
126 pCppArgs[nPos] = *(void **)pCppStack;
127
128 if (! rParam.bIn) // is pure out
129 {
130 // uno out is unconstructed mem!
131 pUnoArgs[nPos] = alloca( pParamTypeDescr->nSize );
132 pTempIndizes[nTempIndizes] = nPos;
133 // will be released at reconversion
134 ppTempParamTypeDescr[nTempIndizes++] = pParamTypeDescr;
135 }
136 // is in/inout
137 else if (bridges::cpp_uno::shared::relatesToInterfaceType(
138 pParamTypeDescr ))
139 {
140 uno_copyAndConvertData( pUnoArgs[nPos] = alloca( pParamTypeDescr->nSize ),
141 *(void **)pCppStack, pParamTypeDescr,
142 pThis->getBridge()->getCpp2Uno() );
143 pTempIndizes[nTempIndizes] = nPos; // has to be reconverted
144 // will be released at reconversion
145 ppTempParamTypeDescr[nTempIndizes++] = pParamTypeDescr;
146 }
147 else // direct way
148 {
149 pUnoArgs[nPos] = *(void **)pCppStack;
150 // no longer needed
151 TYPELIB_DANGER_RELEASE( pParamTypeDescr );
152 }
153 }
154 pCppStack += sizeof(sal_Int32); // standard parameter length
155 }
156
157 // ExceptionHolder
158 uno_Any aUnoExc; // Any will be constructed by callee
159 uno_Any * pUnoExc = &aUnoExc;
160
161 // invoke uno dispatch call
162 (*pThis->getUnoI()->pDispatcher)(
163 pThis->getUnoI(), pMemberTypeDescr, pUnoReturn, pUnoArgs, &pUnoExc );
164
165 // in case an exception occurred...
166 if (pUnoExc)
167 {
168 // destruct temporary in/inout params
169 for ( ; nTempIndizes--; )
170 {
171 sal_Int32 nIndex = pTempIndizes[nTempIndizes];
172
173 if (pParams[nIndex].bIn) // is in/inout => was constructed
174 uno_destructData( pUnoArgs[nIndex], ppTempParamTypeDescr[nTempIndizes], 0 );
175 TYPELIB_DANGER_RELEASE( ppTempParamTypeDescr[nTempIndizes] );
176 }
177 if (pReturnTypeDescr)
178 TYPELIB_DANGER_RELEASE( pReturnTypeDescr );
179
180 CPPU_CURRENT_NAMESPACE::raiseException(
181 &aUnoExc, pThis->getBridge()->getUno2Cpp() );
182 // has to destruct the any
183 // is here for dummy
184 return typelib_TypeClass_VOID;
185 }
186 else // else no exception occurred...
187 {
188 // temporary params
189 for ( ; nTempIndizes--; )
190 {
191 sal_Int32 nIndex = pTempIndizes[nTempIndizes];
192 typelib_TypeDescription * pParamTypeDescr = ppTempParamTypeDescr[nTempIndizes];
193
194 if (pParams[nIndex].bOut) // inout/out
195 {
196 // convert and assign
197 uno_destructData( pCppArgs[nIndex], pParamTypeDescr, cpp_release );
198 uno_copyAndConvertData( pCppArgs[nIndex], pUnoArgs[nIndex], pParamTypeDescr,
199 pThis->getBridge()->getUno2Cpp() );
200 }
201 // destroy temp uno param
202 uno_destructData( pUnoArgs[nIndex], pParamTypeDescr, 0 );
203
204 TYPELIB_DANGER_RELEASE( pParamTypeDescr );
205 }
206 // return
207 if (pCppReturn) // has complex return
208 {
209 if (pUnoReturn != pCppReturn) // needs reconversion
210 {
211 uno_copyAndConvertData( pCppReturn, pUnoReturn, pReturnTypeDescr,
212 pThis->getBridge()->getUno2Cpp() );
213 // destroy temp uno return
214 uno_destructData( pUnoReturn, pReturnTypeDescr, 0 );
215 }
216 // complex return ptr is set to eax
217 *(void **)pRegisterReturn = pCppReturn;
218 }
219 if (pReturnTypeDescr)
220 {
221 typelib_TypeClass eRet = (typelib_TypeClass)pReturnTypeDescr->eTypeClass;
222 TYPELIB_DANGER_RELEASE( pReturnTypeDescr );
223 return eRet;
224 }
225 else
226 return typelib_TypeClass_VOID;
227 }
228 }
229
230
231 //==================================================================================================
232 static typelib_TypeClass cpp_mediate(
233 sal_Int32 nFunctionIndex,
234 sal_Int32 nVtableOffset,
235 void ** pCallStack,
236 sal_Int64 * pRegisterReturn /* space for register return */ )
237 {
238 OSL_ENSURE( sizeof(sal_Int32)==sizeof(void *), "### unexpected!" );
239
240 // pCallStack: ret adr, [ret *], this, params
241 void * pThis;
242 if( nFunctionIndex & 0x80000000 )
243 {
244 nFunctionIndex &= 0x7fffffff;
245 pThis = pCallStack[2];
246 }
247 else
248 {
249 pThis = pCallStack[1];
250 }
251 pThis = static_cast< char * >(pThis) - nVtableOffset;
252 bridges::cpp_uno::shared::CppInterfaceProxy * pCppI
253 = bridges::cpp_uno::shared::CppInterfaceProxy::castInterfaceToProxy(
254 pThis);
255
256 typelib_InterfaceTypeDescription * pTypeDescr = pCppI->getTypeDescr();
257
258 OSL_ENSURE( nFunctionIndex < pTypeDescr->nMapFunctionIndexToMemberIndex, "### illegal vtable index!" );
259 if (nFunctionIndex >= pTypeDescr->nMapFunctionIndexToMemberIndex)
260 {
261 throw RuntimeException(
262 rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "illegal vtable index!" )),
263 (XInterface *)pThis );
264 }
265
266 // determine called method
267 sal_Int32 nMemberPos = pTypeDescr->pMapFunctionIndexToMemberIndex[nFunctionIndex];
268 OSL_ENSURE( nMemberPos < pTypeDescr->nAllMembers, "### illegal member index!" );
269
270 TypeDescription aMemberDescr( pTypeDescr->ppAllMembers[nMemberPos] );
271
272 typelib_TypeClass eRet;
273 switch (aMemberDescr.get()->eTypeClass)
274 {
275 case typelib_TypeClass_INTERFACE_ATTRIBUTE:
276 {
277 if (pTypeDescr->pMapMemberIndexToFunctionIndex[nMemberPos] == nFunctionIndex)
278 {
279 // is GET method
280 eRet = cpp2uno_call(
281 pCppI, aMemberDescr.get(),
282 ((typelib_InterfaceAttributeTypeDescription *)aMemberDescr.get())->pAttributeTypeRef,
283 0, 0, // no params
284 pCallStack, pRegisterReturn );
285 }
286 else
287 {
288 // is SET method
289 typelib_MethodParameter aParam;
290 aParam.pTypeRef =
291 ((typelib_InterfaceAttributeTypeDescription *)aMemberDescr.get())->pAttributeTypeRef;
292 aParam.bIn = sal_True;
293 aParam.bOut = sal_False;
294
295 eRet = cpp2uno_call(
296 pCppI, aMemberDescr.get(),
297 0, // indicates void return
298 1, &aParam,
299 pCallStack, pRegisterReturn );
300 }
301 break;
302 }
303 case typelib_TypeClass_INTERFACE_METHOD:
304 {
305 // is METHOD
306 switch (nFunctionIndex)
307 {
308 case 1: // acquire()
309 pCppI->acquireProxy(); // non virtual call!
310 eRet = typelib_TypeClass_VOID;
311 break;
312 case 2: // release()
313 pCppI->releaseProxy(); // non virtual call!
314 eRet = typelib_TypeClass_VOID;
315 break;
316 case 0: // queryInterface() opt
317 {
318 typelib_TypeDescription * pTD = 0;
319 TYPELIB_DANGER_GET( &pTD, reinterpret_cast< Type * >( pCallStack[3] )->getTypeLibType() );
320 if (pTD)
321 {
322 XInterface * pInterface = 0;
323 (*pCppI->getBridge()->getCppEnv()->getRegisteredInterface)(
324 pCppI->getBridge()->getCppEnv(),
325 (void **)&pInterface, pCppI->getOid().pData,
326 (typelib_InterfaceTypeDescription *)pTD );
327
328 if (pInterface)
329 {
330 ::uno_any_construct(
331 reinterpret_cast< uno_Any * >( pCallStack[1] ),
332 &pInterface, pTD, cpp_acquire );
333 pInterface->release();
334 TYPELIB_DANGER_RELEASE( pTD );
335 *(void **)pRegisterReturn = pCallStack[1];
336 eRet = typelib_TypeClass_ANY;
337 break;
338 }
339 TYPELIB_DANGER_RELEASE( pTD );
340 }
341 } // else perform queryInterface()
342 default:
343 eRet = cpp2uno_call(
344 pCppI, aMemberDescr.get(),
345 ((typelib_InterfaceMethodTypeDescription *)aMemberDescr.get())->pReturnTypeRef,
346 ((typelib_InterfaceMethodTypeDescription *)aMemberDescr.get())->nParams,
347 ((typelib_InterfaceMethodTypeDescription *)aMemberDescr.get())->pParams,
348 pCallStack, pRegisterReturn );
349 }
350 break;
351 }
352 default:
353 {
354 throw RuntimeException(
355 rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "no member description found!" )),
356 (XInterface *)pThis );
357 }
358 }
359
360 return eRet;
361 }
362
363 //==================================================================================================
364 /**
365 * is called on incoming vtable calls
366 * (called by asm snippets)
367 */
368 static void cpp_vtable_call(
369 int nFunctionIndex, int nVtableOffset, void** pCallStack )
370 __attribute__((regparm(3)));
371
372 void cpp_vtable_call( int nFunctionIndex, int nVtableOffset, void** pCallStack )
373 {
374 volatile long nRegReturn[2];
375 typelib_TypeClass aType = cpp_mediate(
376 nFunctionIndex, nVtableOffset, pCallStack, (sal_Int64*)nRegReturn );
377
378 switch( aType )
379 {
380 case typelib_TypeClass_HYPER:
381 case typelib_TypeClass_UNSIGNED_HYPER:
382 __asm__( "movl %1, %%edx\n\t"
383 "movl %0, %%eax\n"
384 : : "m"(nRegReturn[0]), "m"(nRegReturn[1]) );
385 break;
386 case typelib_TypeClass_FLOAT:
387 __asm__( "flds %0\n\t"
388 "fstp %%st(0)\n\t"
389 "flds %0\n"
390 : : "m"(*(float *)nRegReturn) );
391 break;
392 case typelib_TypeClass_DOUBLE:
393 __asm__( "fldl %0\n\t"
394 "fstp %%st(0)\n\t"
395 "fldl %0\n"
396 : : "m"(*(double *)nRegReturn) );
397 break;
398 // case typelib_TypeClass_UNSIGNED_SHORT:
399 // case typelib_TypeClass_SHORT:
400 // __asm__( "movswl %0, %%eax\n"
401 // : : "m"(nRegReturn) );
402 // break;
403 default:
404 __asm__( "movl %0, %%eax\n"
405 : : "m"(nRegReturn[0]) );
406 break;
407 }
408 }
409
410
411 //==================================================================================================
412 int const codeSnippetSize = 20;
413
414 unsigned char * codeSnippet(
415 unsigned char * code, sal_Int32 functionIndex, sal_Int32 vtableOffset,
416 bool simpleRetType)
417 {
418 if (!simpleRetType) {
419 functionIndex |= 0x80000000;
420 }
421 unsigned char * p = code;
422 OSL_ASSERT(sizeof (sal_Int32) == 4);
423 // mov function_index, %eax:
424 *p++ = 0xB8;
425 *reinterpret_cast< sal_Int32 * >(p) = functionIndex;
426 p += sizeof (sal_Int32);
427 // mov vtable_offset, %edx:
428 *p++ = 0xBA;
429 *reinterpret_cast< sal_Int32 * >(p) = vtableOffset;
430 p += sizeof (sal_Int32);
431 // mov %esp, %ecx:
432 *p++ = 0x89;
433 *p++ = 0xE1;
434 // jmp cpp_vtable_call:
435 *p++ = 0xE9;
436 *reinterpret_cast< sal_Int32 * >(p)
437 = ((unsigned char *) cpp_vtable_call) - p - sizeof (sal_Int32);
438 p += sizeof (sal_Int32);
439 OSL_ASSERT(p - code <= codeSnippetSize);
440 return code + codeSnippetSize;
441 }
442
443 }
444
445 struct bridges::cpp_uno::shared::VtableFactory::Slot { void * fn; };
446
447 bridges::cpp_uno::shared::VtableFactory::Slot *
448 bridges::cpp_uno::shared::VtableFactory::mapBlockToVtable(void * block)
449 {
450 return static_cast< Slot * >(block) + 2;
451 }
452
453 sal_Size bridges::cpp_uno::shared::VtableFactory::getBlockSize(
454 sal_Int32 slotCount)
455 {
456 return (slotCount + 2) * sizeof (Slot) + slotCount * codeSnippetSize;
457 }
458
459 bridges::cpp_uno::shared::VtableFactory::Slot *
460 bridges::cpp_uno::shared::VtableFactory::initializeBlock(
461 void * block, sal_Int32 slotCount)
462 {
463 Slot * slots = mapBlockToVtable(block);
464 slots[-2].fn = 0;
465 slots[-1].fn = 0;
466 return slots + slotCount;
467 }
468
469 unsigned char * bridges::cpp_uno::shared::VtableFactory::addLocalFunctions(
470 Slot ** slots, unsigned char * code,
471 typelib_InterfaceTypeDescription const * type, sal_Int32 functionOffset,
472 sal_Int32 functionCount, sal_Int32 vtableOffset)
473 {
474 (*slots) -= functionCount;
475 Slot * s = *slots;
476 for (sal_Int32 i = 0; i < type->nMembers; ++i) {
477 typelib_TypeDescription * member = 0;
478 TYPELIB_DANGER_GET(&member, type->ppMembers[i]);
479 OSL_ASSERT(member != 0);
480 switch (member->eTypeClass) {
481 case typelib_TypeClass_INTERFACE_ATTRIBUTE:
482 // Getter:
483 (s++)->fn = code;
484 code = codeSnippet(
485 code, functionOffset++, vtableOffset,
486 bridges::cpp_uno::shared::isSimpleType(
487 reinterpret_cast<
488 typelib_InterfaceAttributeTypeDescription * >(
489 member)->pAttributeTypeRef));
490 // Setter:
491 if (!reinterpret_cast<
492 typelib_InterfaceAttributeTypeDescription * >(
493 member)->bReadOnly)
494 {
495 (s++)->fn = code;
496 code = codeSnippet(code, functionOffset++, vtableOffset, true);
497 }
498 break;
499
500 case typelib_TypeClass_INTERFACE_METHOD:
501 (s++)->fn = code;
502 code = codeSnippet(
503 code, functionOffset++, vtableOffset,
504 bridges::cpp_uno::shared::isSimpleType(
505 reinterpret_cast<
506 typelib_InterfaceMethodTypeDescription * >(
507 member)->pReturnTypeRef));
508 break;
509
510 default:
511 OSL_ASSERT(false);
512 break;
513 }
514 TYPELIB_DANGER_RELEASE(member);
515 }
516 return code;
517 }
518
519 void bridges::cpp_uno::shared::VtableFactory::flushCode(
520 unsigned char const *, unsigned char const *)
521 {}
522
523 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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