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 #include <com/sun/star/uno/genfunc.hxx>
27 #include <typelib/typedescription.hxx>
28 #include <uno/data.h>
29 #include "bridges/cpp_uno/shared/bridge.hxx"
30 #include "bridges/cpp_uno/shared/cppinterfaceproxy.hxx"
31 #include "bridges/cpp_uno/shared/types.hxx"
32 #include "bridges/cpp_uno/shared/vtablefactory.hxx"
33 #include "share.hxx"
34
35 using namespace com::sun::star::uno;
36
37 namespace
38 {
39 //==================================================================================================
cpp2uno_call(bridges::cpp_uno::shared::CppInterfaceProxy * pThis,const typelib_TypeDescription * pMemberTypeDescr,typelib_TypeDescriptionReference * pReturnTypeRef,sal_Int32 nParams,typelib_MethodParameter * pParams,void ** pCallStack,sal_Int64 * pRegisterReturn)40 static typelib_TypeClass cpp2uno_call(
41 bridges::cpp_uno::shared::CppInterfaceProxy * pThis,
42 const typelib_TypeDescription * pMemberTypeDescr,
43 typelib_TypeDescriptionReference * pReturnTypeRef, // 0 indicates void return
44 sal_Int32 nParams, typelib_MethodParameter * pParams,
45 void ** pCallStack,
46 sal_Int64 * pRegisterReturn /* space for register return */ )
47 {
48 // pCallStack: [ret ptr], this, params
49 char * pCppStack = (char *)pCallStack;
50
51 // return
52 typelib_TypeDescription * pReturnTypeDescr = 0;
53 if (pReturnTypeRef)
54 TYPELIB_DANGER_GET( &pReturnTypeDescr, pReturnTypeRef );
55
56 void * pUnoReturn = 0;
57 void * pCppReturn = 0; // complex return ptr: if != 0 && != pUnoReturn, reconversion need
58
59 if (pReturnTypeDescr)
60 {
61 if (bridges::cpp_uno::shared::isSimpleType( pReturnTypeDescr ))
62 pUnoReturn = pRegisterReturn; // direct way for simple types
63 else // complex return via ptr (pCppReturn)
64 {
65 pCppReturn = *(void**)pCppStack;
66 pUnoReturn = (bridges::cpp_uno::shared::relatesToInterfaceType(
67 pReturnTypeDescr )
68 ? alloca( pReturnTypeDescr->nSize )
69 : pCppReturn); // direct way
70 pCppStack += sizeof( void* );
71 }
72 }
73 // pop this
74 pCppStack += sizeof( void* );
75
76 // stack space
77 OSL_ENSURE( sizeof(void *) == sizeof(sal_Int32), "### unexpected size!" );
78 // parameters
79 void ** pUnoArgs = (void **)alloca( 4 * sizeof(void *) * nParams );
80 void ** pCppArgs = pUnoArgs + nParams;
81 // indizes of values this have to be converted (interface conversion cpp<=>uno)
82 sal_Int32 * pTempIndizes = (sal_Int32 *)(pUnoArgs + (2 * nParams));
83 // type descriptions for reconversions
84 typelib_TypeDescription ** ppTempParamTypeDescr = (typelib_TypeDescription **)(pUnoArgs + (3 * nParams));
85
86 sal_Int32 nTempIndizes = 0;
87
88 for ( sal_Int32 nPos = 0; nPos < nParams; ++nPos )
89 {
90 const typelib_MethodParameter & rParam = pParams[nPos];
91 typelib_TypeDescription * pParamTypeDescr = 0;
92 TYPELIB_DANGER_GET( &pParamTypeDescr, rParam.pTypeRef );
93
94 if (!rParam.bOut && bridges::cpp_uno::shared::isSimpleType( pParamTypeDescr )) // value
95 {
96 pCppArgs[nPos] = pUnoArgs[nPos] = CPPU_CURRENT_NAMESPACE::adjustPointer(pCppStack, pParamTypeDescr);
97 switch (pParamTypeDescr->eTypeClass)
98 {
99 case typelib_TypeClass_HYPER:
100 case typelib_TypeClass_UNSIGNED_HYPER:
101 case typelib_TypeClass_DOUBLE:
102 {
103 if ((reinterpret_cast< long >(pCppStack) & 7) != 0)
104 {
105 OSL_ASSERT( sizeof (double) == sizeof (sal_Int64) );
106 void * pDest = alloca( sizeof (sal_Int64) );
107 *reinterpret_cast< sal_Int32 * >(pDest) =
108 *reinterpret_cast< sal_Int32 const * >(pCppStack);
109 *(reinterpret_cast< sal_Int32 * >(pDest) + 1) =
110 *(reinterpret_cast< sal_Int32 const * >(pCppStack) + 1);
111 pCppArgs[nPos] = pUnoArgs[nPos] = pDest;
112 }
113 pCppStack += sizeof (sal_Int32); // extra long
114 break;
115 default:
116 break;
117 }
118 }
119 // no longer needed
120 TYPELIB_DANGER_RELEASE( pParamTypeDescr );
121 }
122 else // ptr to complex value | ref
123 {
124 pCppArgs[nPos] = *(void **)pCppStack;
125
126 if (! rParam.bIn) // is pure out
127 {
128 // uno out is unconstructed mem!
129 pUnoArgs[nPos] = alloca( pParamTypeDescr->nSize );
130 pTempIndizes[nTempIndizes] = nPos;
131 // will be released at reconversion
132 ppTempParamTypeDescr[nTempIndizes++] = pParamTypeDescr;
133 }
134 // is in/inout
135 else if (bridges::cpp_uno::shared::relatesToInterfaceType(
136 pParamTypeDescr ))
137 {
138 uno_copyAndConvertData( pUnoArgs[nPos] = alloca( pParamTypeDescr->nSize ),
139 *(void **)pCppStack, pParamTypeDescr,
140 pThis->getBridge()->getCpp2Uno() );
141 pTempIndizes[nTempIndizes] = nPos; // has to be reconverted
142 // will be released at reconversion
143 ppTempParamTypeDescr[nTempIndizes++] = pParamTypeDescr;
144 }
145 else // direct way
146 {
147 pUnoArgs[nPos] = *(void **)pCppStack;
148 // no longer needed
149 TYPELIB_DANGER_RELEASE( pParamTypeDescr );
150 }
151 }
152 pCppStack += sizeof(sal_Int32); // standard parameter length
153 }
154
155 // ExceptionHolder
156 uno_Any aUnoExc; // Any will be constructed by callee
157 uno_Any * pUnoExc = &aUnoExc;
158
159 // invoke uno dispatch call
160 (*pThis->getUnoI()->pDispatcher)(pThis->getUnoI(), pMemberTypeDescr, pUnoReturn, pUnoArgs, &pUnoExc );
161
162 // in case an exception occured...
163 if (pUnoExc)
164 {
165 // destruct temporary in/inout params
166 for ( ; nTempIndizes--; )
167 {
168 sal_Int32 nIndex = pTempIndizes[nTempIndizes];
169
170 if (pParams[nIndex].bIn) // is in/inout => was constructed
171 uno_destructData( pUnoArgs[nIndex], ppTempParamTypeDescr[nTempIndizes], 0 );
172 TYPELIB_DANGER_RELEASE( ppTempParamTypeDescr[nTempIndizes] );
173 }
174 if (pReturnTypeDescr)
175 TYPELIB_DANGER_RELEASE( pReturnTypeDescr );
176 CPPU_CURRENT_NAMESPACE::raiseException(&aUnoExc, pThis->getBridge()->getUno2Cpp() );
177 // has to destruct the any
178 // is here for dummy
179 return typelib_TypeClass_VOID;
180 }
181 else // else no exception occured...
182 {
183 // temporary params
184 for ( ; nTempIndizes--; )
185 {
186 sal_Int32 nIndex = pTempIndizes[nTempIndizes];
187 typelib_TypeDescription * pParamTypeDescr = ppTempParamTypeDescr[nTempIndizes];
188
189 if (pParams[nIndex].bOut) // inout/out
190 {
191 // convert and assign
192 uno_destructData( pCppArgs[nIndex], pParamTypeDescr, cpp_release );
193 uno_copyAndConvertData( pCppArgs[nIndex], pUnoArgs[nIndex], pParamTypeDescr,
194 pThis->getBridge()->getUno2Cpp() );
195 }
196 // destroy temp uno param
197 uno_destructData( pUnoArgs[nIndex], pParamTypeDescr, 0 );
198
199 TYPELIB_DANGER_RELEASE( pParamTypeDescr );
200 }
201 // return
202 if (pCppReturn) // has complex return
203 {
204 if (pUnoReturn != pCppReturn) // needs reconversion
205 {
206 uno_copyAndConvertData( pCppReturn, pUnoReturn, pReturnTypeDescr,
207 pThis->getBridge()->getUno2Cpp() );
208 // destroy temp uno return
209 uno_destructData( pUnoReturn, pReturnTypeDescr, 0 );
210 }
211 // complex return ptr is set to eax
212 *(void **)pRegisterReturn = pCppReturn;
213 }
214 if (pReturnTypeDescr)
215 {
216 typelib_TypeClass eRet = (typelib_TypeClass)pReturnTypeDescr->eTypeClass;
217 TYPELIB_DANGER_RELEASE( pReturnTypeDescr );
218 return eRet;
219 }
220 else
221 return typelib_TypeClass_VOID;
222 }
223 }
224
225
226 //==================================================================================================
cpp_mediate(sal_Int32 nFunctionIndex,sal_Int32 nVtableOffset,void ** pCallStack,sal_Int64 * pRegisterReturn)227 static typelib_TypeClass cpp_mediate(
228 sal_Int32 nFunctionIndex,
229 sal_Int32 nVtableOffset,
230 void ** pCallStack,
231 sal_Int64 * pRegisterReturn /* space for register return */ )
232 {
233 OSL_ENSURE( sizeof(sal_Int32)==sizeof(void *), "### unexpected!" );
234
235 // pCallStack: this, params
236 // eventual [ret*] lies at pCallStack -1
237 // so count down pCallStack by one to keep it simple
238 // pCallStack: this, params
239 // eventual [ret*] lies at pCallStack -1
240 // so count down pCallStack by one to keep it simple
241 bridges::cpp_uno::shared::CppInterfaceProxy * pCppI
242 = bridges::cpp_uno::shared::CppInterfaceProxy::castInterfaceToProxy(
243 static_cast< char * >(*pCallStack) - nVtableOffset);
244 if ((nFunctionIndex & 0x80000000) != 0) {
245 nFunctionIndex &= 0x7FFFFFFF;
246 --pCallStack;
247 }
248
249 typelib_InterfaceTypeDescription * pTypeDescr = pCppI->getTypeDescr();
250
251 OSL_ENSURE( nFunctionIndex < pTypeDescr->nMapFunctionIndexToMemberIndex,
252 "### illegal vtable index!" );
253 if (nFunctionIndex >= pTypeDescr->nMapFunctionIndexToMemberIndex)
254 {
255 throw RuntimeException( rtl::OUString::createFromAscii("illegal vtable index!"), (XInterface *)pCppI );
256 }
257
258 // determine called method
259 sal_Int32 nMemberPos = pTypeDescr->pMapFunctionIndexToMemberIndex[nFunctionIndex];
260 OSL_ENSURE( nMemberPos < pTypeDescr->nAllMembers, "### illegal member index!" );
261
262 TypeDescription aMemberDescr( pTypeDescr->ppAllMembers[nMemberPos] );
263
264 #if defined BRIDGES_DEBUG
265 OString cstr( OUStringToOString( aMemberDescr.get()->pTypeName, RTL_TEXTENCODING_ASCII_US ) );
266 fprintf( stderr, "calling %s, nFunctionIndex=%d\n", cstr.getStr(), nFunctionIndex );
267 #endif
268
269 typelib_TypeClass eRet;
270 switch (aMemberDescr.get()->eTypeClass)
271 {
272 case typelib_TypeClass_INTERFACE_ATTRIBUTE:
273 {
274 if (pTypeDescr->pMapMemberIndexToFunctionIndex[nMemberPos] == nFunctionIndex)
275 {
276 // is GET method
277 eRet = cpp2uno_call(
278 pCppI, aMemberDescr.get(),
279 ((typelib_InterfaceAttributeTypeDescription *)aMemberDescr.get())->pAttributeTypeRef,
280 0, 0, // no params
281 pCallStack, pRegisterReturn );
282 }
283 else
284 {
285 // is SET method
286 typelib_MethodParameter aParam;
287 aParam.pTypeRef =
288 ((typelib_InterfaceAttributeTypeDescription *)aMemberDescr.get())->pAttributeTypeRef;
289 aParam.bIn = sal_True;
290 aParam.bOut = sal_False;
291
292 eRet = cpp2uno_call(
293 pCppI, aMemberDescr.get(),
294 0, // indicates void return
295 1, &aParam,
296 pCallStack, pRegisterReturn );
297 }
298 break;
299 }
300 case typelib_TypeClass_INTERFACE_METHOD:
301 {
302 // is METHOD
303 switch (nFunctionIndex)
304 {
305 case 1: // acquire()
306 pCppI->acquireProxy(); // non virtual call!
307 eRet = typelib_TypeClass_VOID;
308 break;
309 case 2: // release()
310 pCppI->releaseProxy(); // non virtual call!
311 eRet = typelib_TypeClass_VOID;
312 break;
313 case 0: // queryInterface() opt
314 {
315 typelib_TypeDescription * pTD = 0;
316 TYPELIB_DANGER_GET( &pTD, reinterpret_cast< Type * >( pCallStack[2] )->getTypeLibType() );
317 if (pTD)
318 {
319 XInterface * pInterface = 0;
320 (*pCppI->getBridge()->getCppEnv()->getRegisteredInterface)(
321 pCppI->getBridge()->getCppEnv(),
322 (void **)&pInterface, pCppI->getOid().pData, (typelib_InterfaceTypeDescription *)pTD );
323
324 if (pInterface)
325 {
326 ::uno_any_construct(
327 reinterpret_cast< uno_Any * >( pCallStack[0] ),
328 &pInterface, pTD, cpp_acquire );
329 pInterface->release();
330 TYPELIB_DANGER_RELEASE( pTD );
331 *(void **)pRegisterReturn = pCallStack[0];
332 eRet = typelib_TypeClass_ANY;
333 break;
334 }
335 TYPELIB_DANGER_RELEASE( pTD );
336 }
337 } // else perform queryInterface()
338 default:
339 eRet = cpp2uno_call(
340 pCppI, aMemberDescr.get(),
341 ((typelib_InterfaceMethodTypeDescription *)aMemberDescr.get())->pReturnTypeRef,
342 ((typelib_InterfaceMethodTypeDescription *)aMemberDescr.get())->nParams,
343 ((typelib_InterfaceMethodTypeDescription *)aMemberDescr.get())->pParams,
344 pCallStack, pRegisterReturn );
345 }
346 break;
347 }
348 default:
349 {
350 throw RuntimeException(rtl::OUString::createFromAscii("no member description found!"), (XInterface *)pCppI );
351 // is here for dummy
352 eRet = typelib_TypeClass_VOID;
353 }
354 }
355 return eRet;
356 }
357
358
359
360 //==================================================================================================
361 /**
362 * is called on incoming vtable calls
363 * (called by asm snippets)
364 */
cpp_vtable_call()365 static void cpp_vtable_call()
366 {
367 sal_Int64 nRegReturn;
368 int nFunctionIndex;
369 void** pCallStack;
370 int vTableOffset;
371
372 void * pRegReturn = &nRegReturn;
373
374 __asm__( "st %%i0, %0\n\t"
375 "st %%i1, %1\n\t"
376 "st %%i2, %2\n\t"
377 : : "m"(nFunctionIndex), "m"(pCallStack), "m"(vTableOffset) );
378
379 // fprintf(stderr,"cpp_mediate nFunctionIndex=%x\n",nFunctionIndex);
380 // fflush(stderr);
381
382 sal_Bool bComplex = nFunctionIndex & 0x80000000 ? sal_True : sal_False;
383 typelib_TypeClass aType =
384 cpp_mediate( nFunctionIndex, vTableOffset, pCallStack+17, (sal_Int64*)&nRegReturn );
385
386 switch( aType )
387 {
388 case typelib_TypeClass_BOOLEAN:
389 case typelib_TypeClass_BYTE:
390 __asm__( "ld %0, %%l0\n\t"
391 "ldsb [%%l0], %%i0\n"
392 : : "m"(pRegReturn) );
393 break;
394 case typelib_TypeClass_CHAR:
395 case typelib_TypeClass_SHORT:
396 case typelib_TypeClass_UNSIGNED_SHORT:
397 __asm__( "ld %0, %%l0\n\t"
398 "ldsh [%%l0], %%i0\n"
399 : : "m"(pRegReturn) );
400 break;
401 case typelib_TypeClass_HYPER:
402 case typelib_TypeClass_UNSIGNED_HYPER:
403 __asm__( "ld %0, %%l0\n\t"
404 "ld [%%l0], %%i0\n\t"
405 "add %%l0, 4, %%l0\n\t"
406 "ld [%%l0], %%i1\n\t"
407 : : "m"(pRegReturn) );
408
409 break;
410 case typelib_TypeClass_FLOAT:
411 __asm__( "ld %0, %%l0\n\t"
412 "ld [%%l0], %%f0\n"
413 : : "m"(pRegReturn) );
414 break;
415 case typelib_TypeClass_DOUBLE:
416 __asm__( "ld %0, %%l0\n\t"
417 "ldd [%%l0], %%f0\n"
418 : : "m"(pRegReturn) );
419 break;
420 case typelib_TypeClass_VOID:
421 break;
422 default:
423 __asm__( "ld %0, %%l0\n\t"
424 "ld [%%l0], %%i0\n"
425 : : "m"(pRegReturn) );
426 break;
427 }
428
429 if( bComplex )
430 {
431 __asm__( "add %i7, 4, %i7\n\t" );
432 // after call to complex return valued funcion there is an unimp instruction
433 }
434
435 }
436 //__________________________________________________________________________________________________
437
438 int const codeSnippetSize = 56;
codeSnippet(unsigned char * code,sal_Int32 functionIndex,sal_Int32 vtableOffset,bool simpleRetType)439 unsigned char * codeSnippet(
440 unsigned char * code, sal_Int32 functionIndex, sal_Int32 vtableOffset,
441 bool simpleRetType)
442 {
443 sal_uInt32 index = functionIndex;
444 if (!simpleRetType) {
445 index |= 0x80000000;
446 }
447 unsigned int * p = reinterpret_cast< unsigned int * >(code);
448 OSL_ASSERT(sizeof (unsigned int) == 4);
449 // st %o0, [%sp+68]:
450 *p++ = 0xD023A044;
451 // st %o1, [%sp+72]:
452 *p++ = 0xD223A048;
453 // st %o2, [%sp+76]:
454 *p++ = 0xD423A04C;
455 // st %o3, [%sp+80]:
456 *p++ = 0xD623A050;
457 // st %o4, [%sp+84]:
458 *p++ = 0xD823A054;
459 // st %o5, [%sp+88]:
460 *p++ = 0xDA23A058;
461 // sethi %hi(index), %o0:
462 *p++ = 0x11000000 | (index >> 10);
463 // or %o0, %lo(index), %o0:
464 *p++ = 0x90122000 | (index & 0x3FF);
465 // sethi %hi(vtableOffset), %o2:
466 *p++ = 0x15000000 | (vtableOffset >> 10);
467 // or %o2, %lo(vtableOffset), %o2:
468 *p++ = 0x9412A000 | (vtableOffset & 0x3FF);
469 // sethi %hi(cpp_vtable_call), %o3:
470 *p++ = 0x17000000 | (reinterpret_cast< unsigned int >(cpp_vtable_call) >> 10);
471 // or %o3, %lo(cpp_vtable_call), %o3:
472 *p++ = 0x9612E000 | (reinterpret_cast< unsigned int >(cpp_vtable_call) & 0x3FF);
473 // jmpl %o3, %g0:
474 *p++ = 0x81C2C000;
475 // mov %sp, %o1:
476 *p++ = 0x9210000E;
477 OSL_ASSERT(
478 reinterpret_cast< unsigned char * >(p) - code <= codeSnippetSize);
479 return code + codeSnippetSize;
480 }
481
482 } //end of namespace
483
484 struct bridges::cpp_uno::shared::VtableFactory::Slot { void * fn; };
485
486 bridges::cpp_uno::shared::VtableFactory::Slot *
mapBlockToVtable(void * block)487 bridges::cpp_uno::shared::VtableFactory::mapBlockToVtable(void * block)
488 {
489 return static_cast< Slot * >(block) + 2;
490 }
491
getBlockSize(sal_Int32 slotCount)492 sal_Size bridges::cpp_uno::shared::VtableFactory::getBlockSize(
493 sal_Int32 slotCount)
494 {
495 return (slotCount + 2) * sizeof (Slot) + slotCount * codeSnippetSize;
496 }
497
498 bridges::cpp_uno::shared::VtableFactory::Slot *
initializeBlock(void * block,sal_Int32 slotCount)499 bridges::cpp_uno::shared::VtableFactory::initializeBlock(
500 void * block, sal_Int32 slotCount)
501 {
502 Slot * slots = mapBlockToVtable(block);
503 slots[-2].fn = 0; //null
504 slots[-1].fn = 0; //destructor
505 return slots + slotCount;
506 }
507
addLocalFunctions(Slot ** slots,unsigned char * code,sal_PtrDiff writetoexecdiff,typelib_InterfaceTypeDescription const * type,sal_Int32 functionOffset,sal_Int32 functionCount,sal_Int32 vTableOffset)508 unsigned char * bridges::cpp_uno::shared::VtableFactory::addLocalFunctions(
509 Slot ** slots, unsigned char * code, sal_PtrDiff writetoexecdiff,
510 typelib_InterfaceTypeDescription const * type, sal_Int32 functionOffset,
511 sal_Int32 functionCount, sal_Int32 vTableOffset)
512 {
513 (*slots) -= functionCount;
514 Slot * s = *slots;
515 for (sal_Int32 i = 0; i < type->nMembers; ++i) {
516 typelib_TypeDescription * member = 0;
517 TYPELIB_DANGER_GET(&member, type->ppMembers[i]);
518 OSL_ASSERT(member != 0);
519 switch (member->eTypeClass) {
520 case typelib_TypeClass_INTERFACE_ATTRIBUTE:
521 // Getter:
522 (s++)->fn = code + writetoexecdiff;
523 code = codeSnippet(
524 code, functionOffset++, vTableOffset,
525 bridges::cpp_uno::shared::isSimpleType(
526 reinterpret_cast<
527 typelib_InterfaceAttributeTypeDescription * >(
528 member)->pAttributeTypeRef));
529 // Setter:
530 if (!reinterpret_cast<
531 typelib_InterfaceAttributeTypeDescription * >(
532 member)->bReadOnly)
533 {
534 (s++)->fn = code + writetoexecdiff;
535 code = codeSnippet(code, functionOffset++, vTableOffset, true);
536 }
537 break;
538
539 case typelib_TypeClass_INTERFACE_METHOD:
540 (s++)->fn = code + writetoexecdiff;
541 code = codeSnippet(
542 code, functionOffset++, vTableOffset,
543 bridges::cpp_uno::shared::isSimpleType(
544 reinterpret_cast<
545 typelib_InterfaceMethodTypeDescription * >(
546 member)->pReturnTypeRef));
547 break;
548
549 default:
550 OSL_ASSERT(false);
551 break;
552 }
553 TYPELIB_DANGER_RELEASE(member);
554 }
555 return code;
556 }
557
558 // use flush code from cc50_solaris_sparc
559
560 extern "C" void doFlushCode(unsigned long address, unsigned long count);
561
flushCode(unsigned char const * begin,unsigned char const * end)562 void bridges::cpp_uno::shared::VtableFactory::flushCode(
563 unsigned char const * begin, unsigned char const * end)
564 {
565 unsigned long n = end - begin;
566 if (n != 0) {
567 unsigned long adr = reinterpret_cast< unsigned long >(begin);
568 unsigned long off = adr & 7;
569 doFlushCode(adr - off, (n + off + 7) >> 3);
570 }
571 }
572