Bug Summary

File:bridges/source/cpp_uno/gcc3_linux_intel/cpp2uno.cxx
Location:line 151, column 17
Description:Access to field 'eTypeClass' results in a dereference of a null pointer (loaded from variable 'pParamTypeDescr')

Annotated Source Code

1/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2/*************************************************************************
3 *
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
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7 *
8 * OpenOffice.org - a multi-platform office productivity suite
9 *
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13 * it under the terms of the GNU Lesser General Public License version 3
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15 *
16 * OpenOffice.org is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU Lesser General Public License version 3 for more details
20 * (a copy is included in the LICENSE file that accompanied this code).
21 *
22 * You should have received a copy of the GNU Lesser General Public License
23 * version 3 along with OpenOffice.org. If not, see
24 * <http://www.openoffice.org/license.html>
25 * for a copy of the LGPLv3 License.
26 *
27 ************************************************************************/
28
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
42using namespace ::com::sun::star::uno;
43
44namespace
45{
46
47//==================================================================================================
48void cpp2uno_call(
49 bridges::cpp_uno::shared::CppInterfaceProxy * pThis,
50 const typelib_TypeDescription * pMemberTypeDescr,
51 typelib_TypeDescriptionReference * pReturnTypeRef, // 0 indicates void return
52 sal_Int32 nParams, typelib_MethodParameter * pParams,
53 void ** pCallStack,
54 void * pReturnValue )
55{
56 // pCallStack: ret, [return ptr], this, params
57 char * pCppStack = (char *)(pCallStack +1);
58
59 // return
60 typelib_TypeDescription * pReturnTypeDescr = 0;
61 if (pReturnTypeRef)
6
←
Taking false branch
→
62 TYPELIB_DANGER_GET( &pReturnTypeDescr, pReturnTypeRef ){ typelib_TypeDescriptionReference * pMacroTypeRef = (pReturnTypeRef
); typelib_TypeDescription ** ppMacroTypeDescr = (&pReturnTypeDescr
); if (((pMacroTypeRef->eTypeClass) == typelib_TypeClass_INTERFACE_METHOD
|| (pMacroTypeRef->eTypeClass) == typelib_TypeClass_INTERFACE_ATTRIBUTE
)) { typelib_typedescriptionreference_getDescription( ppMacroTypeDescr
, pMacroTypeRef ); } else if (!pMacroTypeRef->pType || !pMacroTypeRef
->pType->pWeakRef) { typelib_typedescriptionreference_getDescription
( ppMacroTypeDescr, pMacroTypeRef ); if (*ppMacroTypeDescr) typelib_typedescription_release
( *ppMacroTypeDescr ); } else { *ppMacroTypeDescr = pMacroTypeRef
->pType; } };
63
64 void * pUnoReturn = 0;
65 void * pCppReturn = 0; // complex return ptr: if != 0 && != pUnoReturn, reconversion need
66
67 if (pReturnTypeDescr)
7
←
Taking false branch
→
68 {
69 if (x86::isSimpleReturnType( pReturnTypeDescr ))
70 {
71 pUnoReturn = pReturnValue; // direct way for simple types
72 }
73 else // complex return via ptr (pCppReturn)
74 {
75 pCppReturn = *(void **)pCppStack;
76 pCppStack += sizeof(void *);
77
78 pUnoReturn = (bridges::cpp_uno::shared::relatesToInterfaceType(
79 pReturnTypeDescr )
80 ? alloca( pReturnTypeDescr->nSize )__builtin_alloca (pReturnTypeDescr->nSize)
81 : pCppReturn); // direct way
82 }
83 }
84 // pop this
85 pCppStack += sizeof( void* );
86
87 // stack space
88 OSL_ENSURE( sizeof(void *) == sizeof(sal_Int32), "### unexpected size!" )do { if (true && (!(sizeof(void *) == sizeof(sal_Int32
)))) { sal_detail_logFormat((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"
), ("/usr/local/src/libreoffice/bridges/source/cpp_uno/gcc3_linux_intel/cpp2uno.cxx"
":" "88" ": "), "%s", "### unexpected size!"); } } while (false
);
89 // parameters
90 void ** pUnoArgs = (void **)alloca( 4 * sizeof(void *) * nParams )__builtin_alloca (4 * sizeof(void *) * nParams);
91 void ** pCppArgs = pUnoArgs + nParams;
92 // indizes of values this have to be converted (interface conversion cpp<=>uno)
93 sal_Int32 * pTempIndizes = (sal_Int32 *)(pUnoArgs + (2 * nParams));
94 // type descriptions for reconversions
95 typelib_TypeDescription ** ppTempParamTypeDescr = (typelib_TypeDescription **)(pUnoArgs + (3 * nParams));
96
97 sal_Int32 nTempIndizes = 0;
98
99 for ( sal_Int32 nPos = 0; nPos < nParams; ++nPos )
8
←
Loop condition is true. Entering loop body
→
11
←
Loop condition is true. Entering loop body
→
14
←
Loop condition is true. Entering loop body
→
100 {
101 const typelib_MethodParameter & rParam = pParams[nPos];
102 typelib_TypeDescription * pParamTypeDescr = 0;
103 TYPELIB_DANGER_GET( &pParamTypeDescr, rParam.pTypeRef ){ typelib_TypeDescriptionReference * pMacroTypeRef = (rParam.
pTypeRef); typelib_TypeDescription ** ppMacroTypeDescr = (&
pParamTypeDescr); if (((pMacroTypeRef->eTypeClass) == typelib_TypeClass_INTERFACE_METHOD
|| (pMacroTypeRef->eTypeClass) == typelib_TypeClass_INTERFACE_ATTRIBUTE
)) { typelib_typedescriptionreference_getDescription( ppMacroTypeDescr
, pMacroTypeRef ); } else if (!pMacroTypeRef->pType || !pMacroTypeRef
->pType->pWeakRef) { typelib_typedescriptionreference_getDescription
( ppMacroTypeDescr, pMacroTypeRef ); if (*ppMacroTypeDescr) typelib_typedescription_release
( *ppMacroTypeDescr ); } else { *ppMacroTypeDescr = pMacroTypeRef
->pType; } };
104
105 if (!rParam.bOut
106 && bridges::cpp_uno::shared::isSimpleType( pParamTypeDescr ))
107 // value
108 {
109 pCppArgs[nPos] = pCppStack;
110 pUnoArgs[nPos] = pCppStack;
111 switch (pParamTypeDescr->eTypeClass)
112 {
113 case typelib_TypeClass_HYPER:
114 case typelib_TypeClass_UNSIGNED_HYPER:
115 case typelib_TypeClass_DOUBLE:
116 pCppStack += sizeof(sal_Int32); // extra long
117 break;
118 default:
119 break;
120 }
121 // no longer needed
122 TYPELIB_DANGER_RELEASE( pParamTypeDescr ){ if ((((pParamTypeDescr)->eTypeClass) == typelib_TypeClass_INTERFACE_METHOD
|| ((pParamTypeDescr)->eTypeClass) == typelib_TypeClass_INTERFACE_ATTRIBUTE
)) typelib_typedescription_release( pParamTypeDescr ); };
123 }
124 else // ptr to complex value | ref
125 {
126 pCppArgs[nPos] = *(void **)pCppStack;
127
128 if (! rParam.bIn) // is pure out
9
←
Taking false branch
→
12
←
Taking false branch
→
15
←
Taking false branch
→
129 {
130 // uno out is unconstructed mem!
131 pUnoArgs[nPos] = alloca( pParamTypeDescr->nSize )__builtin_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(
10
←
Taking false branch
→
13
←
Taking false branch
→
16
←
Taking false branch
→
138 pParamTypeDescr ))
139 {
140 uno_copyAndConvertData( pUnoArgs[nPos] = alloca( pParamTypeDescr->nSize )__builtin_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 ){ if ((((pParamTypeDescr)->eTypeClass) == typelib_TypeClass_INTERFACE_METHOD
|| ((pParamTypeDescr)->eTypeClass) == typelib_TypeClass_INTERFACE_ATTRIBUTE
)) typelib_typedescription_release( pParamTypeDescr ); };
17
←
Within the expansion of the macro 'TYPELIB_DANGER_RELEASE':
a
Access to field 'eTypeClass' results in a dereference of a null pointer (loaded from variable '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] ){ if ((((ppTempParamTypeDescr[nTempIndizes])->eTypeClass) ==
typelib_TypeClass_INTERFACE_METHOD || ((ppTempParamTypeDescr
[nTempIndizes])->eTypeClass) == typelib_TypeClass_INTERFACE_ATTRIBUTE
)) typelib_typedescription_release( ppTempParamTypeDescr[nTempIndizes
] ); };
176 }
177 if (pReturnTypeDescr)
178 TYPELIB_DANGER_RELEASE( pReturnTypeDescr ){ if ((((pReturnTypeDescr)->eTypeClass) == typelib_TypeClass_INTERFACE_METHOD
|| ((pReturnTypeDescr)->eTypeClass) == typelib_TypeClass_INTERFACE_ATTRIBUTE
)) typelib_typedescription_release( pReturnTypeDescr ); };
179
180 CPPU_CURRENT_NAMESPACEgcc3::raiseException(
181 &aUnoExc, pThis->getBridge()->getUno2Cpp() );
182 // has to destruct the any
183 }
184 else // else no exception occurred...
185 {
186 // temporary params
187 for ( ; nTempIndizes--; )
188 {
189 sal_Int32 nIndex = pTempIndizes[nTempIndizes];
190 typelib_TypeDescription * pParamTypeDescr = ppTempParamTypeDescr[nTempIndizes];
191
192 if (pParams[nIndex].bOut) // inout/out
193 {
194 // convert and assign
195 uno_destructData( pCppArgs[nIndex], pParamTypeDescr, cpp_release );
196 uno_copyAndConvertData( pCppArgs[nIndex], pUnoArgs[nIndex], pParamTypeDescr,
197 pThis->getBridge()->getUno2Cpp() );
198 }
199 // destroy temp uno param
200 uno_destructData( pUnoArgs[nIndex], pParamTypeDescr, 0 );
201
202 TYPELIB_DANGER_RELEASE( pParamTypeDescr ){ if ((((pParamTypeDescr)->eTypeClass) == typelib_TypeClass_INTERFACE_METHOD
|| ((pParamTypeDescr)->eTypeClass) == typelib_TypeClass_INTERFACE_ATTRIBUTE
)) typelib_typedescription_release( pParamTypeDescr ); };
203 }
204 // return
205 if (pCppReturn) // has complex return
206 {
207 if (pUnoReturn != pCppReturn) // needs reconversion
208 {
209 uno_copyAndConvertData( pCppReturn, pUnoReturn, pReturnTypeDescr,
210 pThis->getBridge()->getUno2Cpp() );
211 // destroy temp uno return
212 uno_destructData( pUnoReturn, pReturnTypeDescr, 0 );
213 }
214 // complex return ptr is set to eax
215 *static_cast< void ** >(pReturnValue) = pCppReturn;
216 }
217 if (pReturnTypeDescr)
218 {
219 TYPELIB_DANGER_RELEASE( pReturnTypeDescr ){ if ((((pReturnTypeDescr)->eTypeClass) == typelib_TypeClass_INTERFACE_METHOD
|| ((pReturnTypeDescr)->eTypeClass) == typelib_TypeClass_INTERFACE_ATTRIBUTE
)) typelib_typedescription_release( pReturnTypeDescr ); };
220 }
221 }
222}
223
224
225//==================================================================================================
226extern "C" void cpp_vtable_call(
227 int nFunctionIndex, int nVtableOffset, void** pCallStack,
228 void * pReturnValue )
229{
230 OSL_ENSURE( sizeof(sal_Int32)==sizeof(void *), "### unexpected!" )do { if (true && (!(sizeof(sal_Int32)==sizeof(void *)
))) { sal_detail_logFormat((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"
), ("/usr/local/src/libreoffice/bridges/source/cpp_uno/gcc3_linux_intel/cpp2uno.cxx"
":" "230" ": "), "%s", "### unexpected!"); } } while (false);
231
232 // pCallStack: ret adr, [ret *], this, params
233 void * pThis;
234 if( nFunctionIndex & 0x80000000 )
1
Taking false branch
→
235 {
236 nFunctionIndex &= 0x7fffffff;
237 pThis = pCallStack[2];
238 }
239 else
240 {
241 pThis = pCallStack[1];
242 }
243 pThis = static_cast< char * >(pThis) - nVtableOffset;
244 bridges::cpp_uno::shared::CppInterfaceProxy * pCppI
245 = bridges::cpp_uno::shared::CppInterfaceProxy::castInterfaceToProxy(
246 pThis);
247
248 typelib_InterfaceTypeDescription * pTypeDescr = pCppI->getTypeDescr();
249
250 OSL_ENSURE( nFunctionIndex < pTypeDescr->nMapFunctionIndexToMemberIndex, "### illegal vtable index!" )do { if (true && (!(nFunctionIndex < pTypeDescr->
nMapFunctionIndexToMemberIndex))) { sal_detail_logFormat((SAL_DETAIL_LOG_LEVEL_WARN
), ("legacy.osl"), ("/usr/local/src/libreoffice/bridges/source/cpp_uno/gcc3_linux_intel/cpp2uno.cxx"
":" "250" ": "), "%s", "### illegal vtable index!"); } } while
(false);
251 if (nFunctionIndex >= pTypeDescr->nMapFunctionIndexToMemberIndex)
2
←
Taking false branch
→
252 {
253 throw RuntimeException(
254 rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "illegal vtable index!" )(&("illegal vtable index!")[0]), ((sal_Int32)((sizeof ("illegal vtable index!"
) / sizeof (("illegal vtable index!")[0]))-1)), (((rtl_TextEncoding
) 11))),
255 (XInterface *)pThis );
256 }
257
258 // determine called method
259 sal_Int32 nMemberPos = pTypeDescr->pMapFunctionIndexToMemberIndex[nFunctionIndex];
260 OSL_ENSURE( nMemberPos < pTypeDescr->nAllMembers, "### illegal member index!" )do { if (true && (!(nMemberPos < pTypeDescr->nAllMembers
))) { sal_detail_logFormat((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"
), ("/usr/local/src/libreoffice/bridges/source/cpp_uno/gcc3_linux_intel/cpp2uno.cxx"
":" "260" ": "), "%s", "### illegal member index!"); } } while
(false);
261
262 TypeDescription aMemberDescr( pTypeDescr->ppAllMembers[nMemberPos] );
263
264 switch (aMemberDescr.get()->eTypeClass)
3
←
Control jumps to 'case typelib_TypeClass_INTERFACE_METHOD:' at line 294
→
265 {
266 case typelib_TypeClass_INTERFACE_ATTRIBUTE:
267 {
268 if (pTypeDescr->pMapMemberIndexToFunctionIndex[nMemberPos] == nFunctionIndex)
269 {
270 // is GET method
271 cpp2uno_call(
272 pCppI, aMemberDescr.get(),
273 ((typelib_InterfaceAttributeTypeDescription *)aMemberDescr.get())->pAttributeTypeRef,
274 0, 0, // no params
275 pCallStack, pReturnValue );
276 }
277 else
278 {
279 // is SET method
280 typelib_MethodParameter aParam;
281 aParam.pTypeRef =
282 ((typelib_InterfaceAttributeTypeDescription *)aMemberDescr.get())->pAttributeTypeRef;
283 aParam.bIn = sal_True((sal_Bool)1);
284 aParam.bOut = sal_False((sal_Bool)0);
285
286 cpp2uno_call(
287 pCppI, aMemberDescr.get(),
288 0, // indicates void return
289 1, &aParam,
290 pCallStack, pReturnValue );
291 }
292 break;
293 }
294 case typelib_TypeClass_INTERFACE_METHOD:
295 {
296 // is METHOD
297 switch (nFunctionIndex)
4
←
Control jumps to the 'default' case at line 330
→
298 {
299 case 1: // acquire()
300 pCppI->acquireProxy(); // non virtual call!
301 break;
302 case 2: // release()
303 pCppI->releaseProxy(); // non virtual call!
304 break;
305 case 0: // queryInterface() opt
306 {
307 typelib_TypeDescription * pTD = 0;
308 TYPELIB_DANGER_GET( &pTD, reinterpret_cast< Type * >( pCallStack[3] )->getTypeLibType() ){ typelib_TypeDescriptionReference * pMacroTypeRef = (reinterpret_cast
< Type * >( pCallStack[3] )->getTypeLibType()); typelib_TypeDescription
** ppMacroTypeDescr = (&pTD); if (((pMacroTypeRef->eTypeClass
) == typelib_TypeClass_INTERFACE_METHOD || (pMacroTypeRef->
eTypeClass) == typelib_TypeClass_INTERFACE_ATTRIBUTE)) { typelib_typedescriptionreference_getDescription
( ppMacroTypeDescr, pMacroTypeRef ); } else if (!pMacroTypeRef
->pType || !pMacroTypeRef->pType->pWeakRef) { typelib_typedescriptionreference_getDescription
( ppMacroTypeDescr, pMacroTypeRef ); if (*ppMacroTypeDescr) typelib_typedescription_release
( *ppMacroTypeDescr ); } else { *ppMacroTypeDescr = pMacroTypeRef
->pType; } };
309 if (pTD)
310 {
311 XInterface * pInterface = 0;
312 (*pCppI->getBridge()->getCppEnv()->getRegisteredInterface)(
313 pCppI->getBridge()->getCppEnv(),
314 (void **)&pInterface, pCppI->getOid().pData,
315 (typelib_InterfaceTypeDescription *)pTD );
316
317 if (pInterface)
318 {
319 ::uno_any_construct(
320 reinterpret_cast< uno_Any * >( pCallStack[1] ),
321 &pInterface, pTD, cpp_acquire );
322 pInterface->release();
323 TYPELIB_DANGER_RELEASE( pTD ){ if ((((pTD)->eTypeClass) == typelib_TypeClass_INTERFACE_METHOD
|| ((pTD)->eTypeClass) == typelib_TypeClass_INTERFACE_ATTRIBUTE
)) typelib_typedescription_release( pTD ); };
324 *static_cast< void ** >(pReturnValue) = pCallStack[1];
325 break;
326 }
327 TYPELIB_DANGER_RELEASE( pTD ){ if ((((pTD)->eTypeClass) == typelib_TypeClass_INTERFACE_METHOD
|| ((pTD)->eTypeClass) == typelib_TypeClass_INTERFACE_ATTRIBUTE
)) typelib_typedescription_release( pTD ); };
328 }
329 } // else perform queryInterface()
330 default:
331 cpp2uno_call(
5
←
Calling 'cpp2uno_call'
→
332 pCppI, aMemberDescr.get(),
333 ((typelib_InterfaceMethodTypeDescription *)aMemberDescr.get())->pReturnTypeRef,
334 ((typelib_InterfaceMethodTypeDescription *)aMemberDescr.get())->nParams,
335 ((typelib_InterfaceMethodTypeDescription *)aMemberDescr.get())->pParams,
336 pCallStack, pReturnValue );
337 }
338 break;
339 }
340 default:
341 {
342 throw RuntimeException(
343 rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "no member description found!" )(&("no member description found!")[0]), ((sal_Int32)((sizeof
("no member description found!") / sizeof (("no member description found!"
)[0]))-1)), (((rtl_TextEncoding) 11))),
344 (XInterface *)pThis );
345 }
346 }
347}
348
349//==================================================================================================
350extern "C" void privateSnippetExecutorGeneral();
351extern "C" void privateSnippetExecutorVoid();
352extern "C" void privateSnippetExecutorHyper();
353extern "C" void privateSnippetExecutorFloat();
354extern "C" void privateSnippetExecutorDouble();
355extern "C" void privateSnippetExecutorClass();
356extern "C" typedef void (*PrivateSnippetExecutor)();
357
358int const codeSnippetSize = 16;
359
360#if defined (FREEBSD) || defined(NETBSD) || defined(OPENBSD) || defined(MACOSX) || \
361 defined(DRAGONFLY)
362namespace
363{
364 PrivateSnippetExecutor returnsInRegister(typelib_TypeDescriptionReference * pReturnTypeRef)
365 {
366 //These archs apparently are returning small structs in registers, while Linux
367 //doesn't
368 PrivateSnippetExecutor exec=NULL__null;
369
370 typelib_TypeDescription * pReturnTypeDescr = 0;
371 TYPELIB_DANGER_GET( &pReturnTypeDescr, pReturnTypeRef ){ typelib_TypeDescriptionReference * pMacroTypeRef = (pReturnTypeRef
); typelib_TypeDescription ** ppMacroTypeDescr = (&pReturnTypeDescr
); if (((pMacroTypeRef->eTypeClass) == typelib_TypeClass_INTERFACE_METHOD
|| (pMacroTypeRef->eTypeClass) == typelib_TypeClass_INTERFACE_ATTRIBUTE
)) { typelib_typedescriptionreference_getDescription( ppMacroTypeDescr
, pMacroTypeRef ); } else if (!pMacroTypeRef->pType || !pMacroTypeRef
->pType->pWeakRef) { typelib_typedescriptionreference_getDescription
( ppMacroTypeDescr, pMacroTypeRef ); if (*ppMacroTypeDescr) typelib_typedescription_release
( *ppMacroTypeDescr ); } else { *ppMacroTypeDescr = pMacroTypeRef
->pType; } };
372 const bool bSimpleReturnStruct = x86::isSimpleReturnType(pReturnTypeDescr);
373 const sal_Int32 nRetSize = pReturnTypeDescr->nSize;
374 TYPELIB_DANGER_RELEASE( pReturnTypeDescr ){ if ((((pReturnTypeDescr)->eTypeClass) == typelib_TypeClass_INTERFACE_METHOD
|| ((pReturnTypeDescr)->eTypeClass) == typelib_TypeClass_INTERFACE_ATTRIBUTE
)) typelib_typedescription_release( pReturnTypeDescr ); };
375 if (bSimpleReturnStruct)
376 {
377 exec = privateSnippetExecutorGeneral; // fills eax
378 if (nRetSize > 4)
379 exec = privateSnippetExecutorHyper; // fills eax/edx
380 }
381 return exec;
382 }
383}
384#endif
385
386unsigned char * codeSnippet(
387 unsigned char * code, sal_PtrDiff writetoexecdiff, sal_Int32 functionIndex, sal_Int32 vtableOffset,
388 typelib_TypeDescriptionReference * pReturnTypeRef)
389{
390 PrivateSnippetExecutor exec;
391 typelib_TypeClass eReturnClass = pReturnTypeRef ? pReturnTypeRef->eTypeClass : typelib_TypeClass_VOID;
392 switch (eReturnClass)
393 {
394 case typelib_TypeClass_VOID:
395 exec = privateSnippetExecutorVoid;
396 break;
397 case typelib_TypeClass_HYPER:
398 case typelib_TypeClass_UNSIGNED_HYPER:
399 exec = privateSnippetExecutorHyper;
400 break;
401 case typelib_TypeClass_FLOAT:
402 exec = privateSnippetExecutorFloat;
403 break;
404 case typelib_TypeClass_DOUBLE:
405 exec = privateSnippetExecutorDouble;
406 break;
407 case typelib_TypeClass_STRUCT:
408 case typelib_TypeClass_EXCEPTION:
409#if defined(FREEBSD) || defined(NETBSD) || defined(OPENBSD) || defined(MACOSX) || \
410 defined(DRAGONFLY)
411 exec = returnsInRegister(pReturnTypeRef);
412 if (!exec)
413 {
414 exec = privateSnippetExecutorClass;
415 functionIndex |= 0x80000000;
416 }
417 break;
418#endif
419 case typelib_TypeClass_STRING:
420 case typelib_TypeClass_TYPE:
421 case typelib_TypeClass_ANY:
422 case typelib_TypeClass_SEQUENCE:
423 case typelib_TypeClass_INTERFACE:
424 exec = privateSnippetExecutorClass;
425 functionIndex |= 0x80000000;
426 break;
427 default:
428 exec = privateSnippetExecutorGeneral;
429 break;
430 }
431 unsigned char * p = code;
432 OSL_ASSERT(sizeof (sal_Int32) == 4)do { if (true && (!(sizeof (sal_Int32) == 4))) { sal_detail_logFormat
((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"), ("/usr/local/src/libreoffice/bridges/source/cpp_uno/gcc3_linux_intel/cpp2uno.cxx"
":" "432" ": "), "OSL_ASSERT: %s", "sizeof (sal_Int32) == 4"
); } } while (false);
433 // mov function_index, %eax:
434 *p++ = 0xB8;
435 *reinterpret_cast< sal_Int32 * >(p) = functionIndex;
436 p += sizeof (sal_Int32);
437 // mov vtable_offset, %edx:
438 *p++ = 0xBA;
439 *reinterpret_cast< sal_Int32 * >(p) = vtableOffset;
440 p += sizeof (sal_Int32);
441 // jmp privateSnippetExecutor:
442 *p++ = 0xE9;
443 *reinterpret_cast< sal_Int32 * >(p)
444 = ((unsigned char *) exec) - p - sizeof (sal_Int32) - writetoexecdiff;
445 p += sizeof (sal_Int32);
446 OSL_ASSERT(p - code <= codeSnippetSize)do { if (true && (!(p - code <= codeSnippetSize)))
{ sal_detail_logFormat((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"
), ("/usr/local/src/libreoffice/bridges/source/cpp_uno/gcc3_linux_intel/cpp2uno.cxx"
":" "446" ": "), "OSL_ASSERT: %s", "p - code <= codeSnippetSize"
); } } while (false);
447 return code + codeSnippetSize;
448}
449
450}
451
452struct bridges::cpp_uno::shared::VtableFactory::Slot { void * fn; };
453
454bridges::cpp_uno::shared::VtableFactory::Slot *
455bridges::cpp_uno::shared::VtableFactory::mapBlockToVtable(void * block) {
456 return static_cast< Slot * >(block) + 2;
457}
458
459sal_Size bridges::cpp_uno::shared::VtableFactory::getBlockSize(
460 sal_Int32 slotCount)
461{
462 return (slotCount + 2) * sizeof (Slot) + slotCount * codeSnippetSize;
463}
464
465bridges::cpp_uno::shared::VtableFactory::Slot *
466bridges::cpp_uno::shared::VtableFactory::initializeBlock(
467 void * block, sal_Int32 slotCount)
468{
469 Slot * slots = mapBlockToVtable(block);
470 slots[-2].fn = 0;
471 slots[-1].fn = 0;
472 return slots + slotCount;
473}
474
475unsigned char * bridges::cpp_uno::shared::VtableFactory::addLocalFunctions(
476 Slot ** slots, unsigned char * code, sal_PtrDiff writetoexecdiff,
477 typelib_InterfaceTypeDescription const * type, sal_Int32 functionOffset,
478 sal_Int32 functionCount, sal_Int32 vtableOffset)
479{
480 (*slots) -= functionCount;
481 Slot * s = *slots;
482 for (sal_Int32 i = 0; i < type->nMembers; ++i) {
483 typelib_TypeDescription * member = 0;
484 TYPELIB_DANGER_GET(&member, type->ppMembers[i]){ typelib_TypeDescriptionReference * pMacroTypeRef = (type->
ppMembers[i]); typelib_TypeDescription ** ppMacroTypeDescr = (
&member); if (((pMacroTypeRef->eTypeClass) == typelib_TypeClass_INTERFACE_METHOD
|| (pMacroTypeRef->eTypeClass) == typelib_TypeClass_INTERFACE_ATTRIBUTE
)) { typelib_typedescriptionreference_getDescription( ppMacroTypeDescr
, pMacroTypeRef ); } else if (!pMacroTypeRef->pType || !pMacroTypeRef
->pType->pWeakRef) { typelib_typedescriptionreference_getDescription
( ppMacroTypeDescr, pMacroTypeRef ); if (*ppMacroTypeDescr) typelib_typedescription_release
( *ppMacroTypeDescr ); } else { *ppMacroTypeDescr = pMacroTypeRef
->pType; } };
485 OSL_ASSERT(member != 0)do { if (true && (!(member != 0))) { sal_detail_logFormat
((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"), ("/usr/local/src/libreoffice/bridges/source/cpp_uno/gcc3_linux_intel/cpp2uno.cxx"
":" "485" ": "), "OSL_ASSERT: %s", "member != 0"); } } while
(false);
486 switch (member->eTypeClass) {
487 case typelib_TypeClass_INTERFACE_ATTRIBUTE:
488 // Getter:
489 (s++)->fn = code + writetoexecdiff;
490 code = codeSnippet(
491 code, writetoexecdiff, functionOffset++, vtableOffset,
492 reinterpret_cast< typelib_InterfaceAttributeTypeDescription * >(
493 member)->pAttributeTypeRef);
494 // Setter:
495 if (!reinterpret_cast<
496 typelib_InterfaceAttributeTypeDescription * >(
497 member)->bReadOnly)
498 {
499 (s++)->fn = code + writetoexecdiff;
500 code = codeSnippet(
501 code, writetoexecdiff, functionOffset++, vtableOffset,
502 NULL__null);
503 }
504 break;
505
506 case typelib_TypeClass_INTERFACE_METHOD:
507 (s++)->fn = code + writetoexecdiff;
508 code = codeSnippet(
509 code, writetoexecdiff, functionOffset++, vtableOffset,
510 reinterpret_cast< typelib_InterfaceMethodTypeDescription * >(
511 member)->pReturnTypeRef);
512 break;
513
514 default:
515 OSL_ASSERT(false)do { if (true && (!(false))) { sal_detail_logFormat((
SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"), ("/usr/local/src/libreoffice/bridges/source/cpp_uno/gcc3_linux_intel/cpp2uno.cxx"
":" "515" ": "), "OSL_ASSERT: %s", "false"); } } while (false
);
516 break;
517 }
518 TYPELIB_DANGER_RELEASE(member){ if ((((member)->eTypeClass) == typelib_TypeClass_INTERFACE_METHOD
|| ((member)->eTypeClass) == typelib_TypeClass_INTERFACE_ATTRIBUTE
)) typelib_typedescription_release( member ); };
519 }
520 return code;
521}
522
523void bridges::cpp_uno::shared::VtableFactory::flushCode(
524 unsigned char const *, unsigned char const *)
525{}
526
527/* vim:set shiftwidth=4 softtabstop=4 expandtab: */