1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454 | /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include <malloc.h>
#include <com/sun/star/uno/genfunc.hxx>
#include <uno/data.h>
#include "bridge.hxx"
#include "types.hxx"
#include "unointerfaceproxy.hxx"
#include "vtables.hxx"
#include "msci.hxx"
using namespace ::com::sun::star::uno;
namespace
{
inline static void callVirtualMethod(
void * pAdjustedThisPtr, sal_Int32 nVtableIndex,
void * pRegisterReturn, typelib_TypeClass eReturnTypeClass,
sal_Int32 * pStackLongs, sal_Int32 nStackLongs )
{
// parameter list is mixed list of * and values
// reference parameters are pointers
assert(pStackLongs && pAdjustedThisPtr);
static_assert( (sizeof(void *) == 4) &&
(sizeof(sal_Int32) == 4), "### unexpected size of int!" );
__asm
{
mov eax, nStackLongs
test eax, eax
je Lcall
// copy values
mov ecx, eax
shl eax, 2 // sizeof(sal_Int32) == 4
add eax, pStackLongs // params stack space
Lcopy: sub eax, 4
push dword ptr [eax]
dec ecx
jne Lcopy
Lcall:
// call
mov ecx, pAdjustedThisPtr
push ecx // this ptr
mov edx, [ecx] // pvft
mov eax, nVtableIndex
shl eax, 2 // sizeof(void *) == 4
add edx, eax
call [edx] // interface method call must be __cdecl!!!
// register return
mov ecx, eReturnTypeClass
cmp ecx, typelib_TypeClass_VOID
je Lcleanup
mov ebx, pRegisterReturn
// int32
cmp ecx, typelib_TypeClass_LONG
je Lint32
cmp ecx, typelib_TypeClass_UNSIGNED_LONG
je Lint32
cmp ecx, typelib_TypeClass_ENUM
je Lint32
// int8
cmp ecx, typelib_TypeClass_BOOLEAN
je Lint8
cmp ecx, typelib_TypeClass_BYTE
je Lint8
// int16
cmp ecx, typelib_TypeClass_CHAR
je Lint16
cmp ecx, typelib_TypeClass_SHORT
je Lint16
cmp ecx, typelib_TypeClass_UNSIGNED_SHORT
je Lint16
// float
cmp ecx, typelib_TypeClass_FLOAT
je Lfloat
// double
cmp ecx, typelib_TypeClass_DOUBLE
je Ldouble
// int64
cmp ecx, typelib_TypeClass_HYPER
je Lint64
cmp ecx, typelib_TypeClass_UNSIGNED_HYPER
je Lint64
jmp Lcleanup // no simple type
Lint8:
mov byte ptr [ebx], al
jmp Lcleanup
Lint16:
mov word ptr [ebx], ax
jmp Lcleanup
Lfloat:
fstp dword ptr [ebx]
jmp Lcleanup
Ldouble:
fstp qword ptr [ebx]
jmp Lcleanup
Lint64:
mov dword ptr [ebx], eax
mov dword ptr [ebx+4], edx
jmp Lcleanup
Lint32:
mov dword ptr [ebx], eax
jmp Lcleanup
Lcleanup:
// cleanup stack (obsolete though because of function)
mov eax, nStackLongs
shl eax, 2 // sizeof(sal_Int32) == 4
add eax, 4 // this ptr
add esp, eax
}
}
static void 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 ) throw ()
{
// max space for: [complex ret ptr], values|ptr ...
char * pCppStack = (char *)alloca( sizeof(sal_Int32) + (nParams * sizeof(sal_Int64)) );<--- Obsolete function 'alloca' called. [+]The obsolete function 'alloca' is called. In C++11 and later it is recommended to use std::array<> or a dynamically allocated array instead. The function 'alloca' is dangerous for many reasons (http://stackoverflow.com/questions/1018853/why-is-alloca-not-considered-good-practice and http://linux.die.net/man/3/alloca).
char * pCppStackStart = pCppStack;
// return
typelib_TypeDescription * pReturnTypeDescr = 0;
TYPELIB_DANGER_GET( &pReturnTypeDescr, pReturnTypeRef );
assert(pReturnTypeDescr);
void * pCppReturn = nullptr; // if != 0 && != pUnoReturn, needs reconversion
if (pReturnTypeDescr)
{
if (bridges::cpp_uno::shared::isSimpleType( pReturnTypeDescr ))
{
pCppReturn = pUnoReturn; // direct way for simple types
}
else
{
// complex return via ptr
pCppReturn = *(void **)pCppStack
= (bridges::cpp_uno::shared::relatesToInterfaceType(
pReturnTypeDescr )
? alloca( pReturnTypeDescr->nSize )<--- Obsolete function 'alloca' called. [+]The obsolete function 'alloca' is called. In C++11 and later it is recommended to use std::array<> or a dynamically allocated array instead. The function 'alloca' is dangerous for many reasons (http://stackoverflow.com/questions/1018853/why-is-alloca-not-considered-good-practice and http://linux.die.net/man/3/alloca).
: pUnoReturn); // direct way
pCppStack += sizeof(void *);
}
}
// stack space
static_assert(sizeof(void *) == sizeof(sal_Int32), "### unexpected size!");
// args
void ** pCppArgs = (void **)alloca( 3 * sizeof(void *) * nParams );<--- Obsolete function 'alloca' called. [+]The obsolete function 'alloca' is called. In C++11 and later it is recommended to use std::array<> or a dynamically allocated array instead. The function 'alloca' is dangerous for many reasons (http://stackoverflow.com/questions/1018853/why-is-alloca-not-considered-good-practice and http://linux.die.net/man/3/alloca).
// indices of values this have to be converted (interface conversion cpp<=>uno)
sal_Int32 * pTempIndices = (sal_Int32 *)(pCppArgs + nParams);
// type descriptions for reconversions
typelib_TypeDescription ** ppTempParamTypeDescr = (typelib_TypeDescription **)(pCppArgs + (2 * nParams));
sal_Int32 nTempIndices = 0;
for ( sal_Int32 nPos = 0; nPos < nParams; ++nPos )
{
const typelib_MethodParameter & rParam = pParams[nPos];
typelib_TypeDescription * pParamTypeDescr = 0;
TYPELIB_DANGER_GET( &pParamTypeDescr, rParam.pTypeRef );
if (!rParam.bOut
&& bridges::cpp_uno::shared::isSimpleType( pParamTypeDescr ))
{
::uno_copyAndConvertData(
pCppArgs[nPos] = pCppStack, pUnoArgs[nPos], pParamTypeDescr,
pThis->getBridge()->getUno2Cpp() );
switch (pParamTypeDescr->eTypeClass)
{
case typelib_TypeClass_HYPER:
case typelib_TypeClass_UNSIGNED_HYPER:
case typelib_TypeClass_DOUBLE:
pCppStack += sizeof(sal_Int32); // extra long
break;
default:
break;
}
// no longer needed
TYPELIB_DANGER_RELEASE( pParamTypeDescr );
}
else // ptr to complex value | ref
{
if (! rParam.bIn) // is pure out
{
// cpp out is constructed mem, uno out is not!
::uno_constructData(
*(void **)pCppStack = pCppArgs[nPos] = alloca( pParamTypeDescr->nSize ),<--- Obsolete function 'alloca' called. [+]The obsolete function 'alloca' is called. In C++11 and later it is recommended to use std::array<> or a dynamically allocated array instead. The function 'alloca' is dangerous for many reasons (http://stackoverflow.com/questions/1018853/why-is-alloca-not-considered-good-practice and http://linux.die.net/man/3/alloca).
pParamTypeDescr );
pTempIndices[nTempIndices] = nPos; // default constructed for cpp call
// will be released at reconversion
ppTempParamTypeDescr[nTempIndices++] = pParamTypeDescr;
}
// is in/inout
else if (bridges::cpp_uno::shared::relatesToInterfaceType(
pParamTypeDescr ))
{
::uno_copyAndConvertData(
*(void **)pCppStack = pCppArgs[nPos] = alloca( pParamTypeDescr->nSize ),<--- Obsolete function 'alloca' called. [+]The obsolete function 'alloca' is called. In C++11 and later it is recommended to use std::array<> or a dynamically allocated array instead. The function 'alloca' is dangerous for many reasons (http://stackoverflow.com/questions/1018853/why-is-alloca-not-considered-good-practice and http://linux.die.net/man/3/alloca).
pUnoArgs[nPos], pParamTypeDescr,
pThis->getBridge()->getUno2Cpp() );
pTempIndices[nTempIndices] = nPos; // has to be reconverted
// will be released at reconversion
ppTempParamTypeDescr[nTempIndices++] = pParamTypeDescr;
}
else // direct way
{
*(void **)pCppStack = pCppArgs[nPos] = pUnoArgs[nPos];
// no longer needed
TYPELIB_DANGER_RELEASE( pParamTypeDescr );
}
}
pCppStack += sizeof(sal_Int32); // standard parameter length
}
__try
{
// pCppI is msci this pointer
callVirtualMethod(
reinterpret_cast< void ** >(pThis->getCppI()) + aVtableSlot.offset,
aVtableSlot.index,
pCppReturn, pReturnTypeDescr->eTypeClass,
(sal_Int32 *)pCppStackStart,
(pCppStack - pCppStackStart) / sizeof(sal_Int32) );
}
__except (CPPU_CURRENT_NAMESPACE::msci_filterCppException(
GetExceptionInformation(),
*ppUnoExc, pThis->getBridge()->getCpp2Uno() ))
{
// *ppUnoExc was constructed by filter function
// temporary params
while (nTempIndices--)
{
sal_Int32 nIndex = pTempIndices[nTempIndices];
// destroy temp cpp param => cpp: every param was constructed
::uno_destructData(
pCppArgs[nIndex], ppTempParamTypeDescr[nTempIndices],
cpp_release );
TYPELIB_DANGER_RELEASE( ppTempParamTypeDescr[nTempIndices] );
}
// return type
if (pReturnTypeDescr)
{
TYPELIB_DANGER_RELEASE( pReturnTypeDescr );
}
// end here
return;
}
// NO exception occurred
*ppUnoExc = 0;
// reconvert temporary params
while (nTempIndices--)
{
sal_Int32 nIndex = pTempIndices[nTempIndices];
typelib_TypeDescription * pParamTypeDescr =
ppTempParamTypeDescr[nTempIndices];
if (pParams[nIndex].bIn)
{
if (pParams[nIndex].bOut) // inout
{
::uno_destructData(
pUnoArgs[nIndex], pParamTypeDescr, 0 ); // destroy uno value
::uno_copyAndConvertData(
pUnoArgs[nIndex], pCppArgs[nIndex], pParamTypeDescr,
pThis->getBridge()->getCpp2Uno() );
}
}
else // pure out
{
::uno_copyAndConvertData(
pUnoArgs[nIndex], pCppArgs[nIndex], pParamTypeDescr,
pThis->getBridge()->getCpp2Uno() );
}
// destroy temp cpp param => cpp: every param was constructed
::uno_destructData(
pCppArgs[nIndex], pParamTypeDescr, cpp_release );
TYPELIB_DANGER_RELEASE( pParamTypeDescr );
}
// return value
if (pCppReturn && pUnoReturn != pCppReturn)
{
::uno_copyAndConvertData(
pUnoReturn, pCppReturn, pReturnTypeDescr,
pThis->getBridge()->getCpp2Uno() );
::uno_destructData(
pCppReturn, pReturnTypeDescr, cpp_release );
}
// return type
if (pReturnTypeDescr)
{
TYPELIB_DANGER_RELEASE( pReturnTypeDescr );
}
}
}
namespace bridges::cpp_uno::shared {
void unoInterfaceProxyDispatch(
uno_Interface * pUnoI, const typelib_TypeDescription * pMemberDescr,
void * pReturn, void * pArgs[], uno_Any ** ppException )
{
// is my surrogate
bridges::cpp_uno::shared::UnoInterfaceProxy * pThis
= static_cast< bridges::cpp_uno::shared::UnoInterfaceProxy * >(pUnoI);
switch (pMemberDescr->eTypeClass)
{
case typelib_TypeClass_INTERFACE_ATTRIBUTE:
{
VtableSlot aVtableSlot(
getVtableSlot(
reinterpret_cast<
typelib_InterfaceAttributeTypeDescription const * >(
pMemberDescr)));
if (pReturn)
{
// dependent dispatch
cpp_call(
pThis, aVtableSlot,
((typelib_InterfaceAttributeTypeDescription *)pMemberDescr)->pAttributeTypeRef,
0, 0, // no params
pReturn, pArgs, ppException );
}
else
{
// is SET
typelib_MethodParameter aParam;
aParam.pTypeRef =
((typelib_InterfaceAttributeTypeDescription *)pMemberDescr)->pAttributeTypeRef;
aParam.bIn = sal_True;
aParam.bOut = sal_False;
typelib_TypeDescriptionReference * pReturnTypeRef = 0;
OUString aVoidName("void");
typelib_typedescriptionreference_new(
&pReturnTypeRef, typelib_TypeClass_VOID, aVoidName.pData );
// dependent dispatch
aVtableSlot.index += 1; // get, then set method
cpp_call(
pThis, aVtableSlot,
pReturnTypeRef,
1, &aParam,
pReturn, pArgs, ppException );
typelib_typedescriptionreference_release( pReturnTypeRef );
}
break;
}
case typelib_TypeClass_INTERFACE_METHOD:
{
VtableSlot aVtableSlot(
getVtableSlot(
reinterpret_cast<
typelib_InterfaceMethodTypeDescription const * >(
pMemberDescr)));
switch (aVtableSlot.index)
{
// standard calls
case 1: // acquire uno interface
(*pUnoI->acquire)( pUnoI );
*ppException = 0;
break;
case 2: // release uno interface
(*pUnoI->release)( pUnoI );
*ppException = 0;
break;
case 0: // queryInterface() opt
{
typelib_TypeDescription * pTD = 0;
TYPELIB_DANGER_GET( &pTD, reinterpret_cast< Type * >( pArgs[0] )->getTypeLibType() );
if (pTD)
{
uno_Interface * pInterface = 0;<--- Assignment 'pInterface=0', assigned value is 0
(*pThis->pBridge->getUnoEnv()->getRegisteredInterface)(
pThis->pBridge->getUnoEnv(),
(void **)&pInterface, pThis->oid.pData, (typelib_InterfaceTypeDescription *)pTD );
if (pInterface)<--- Condition 'pInterface' is always false
{
::uno_any_construct(
reinterpret_cast< uno_Any * >( pReturn ),
&pInterface, pTD, 0 );
(*pInterface->release)( pInterface );
TYPELIB_DANGER_RELEASE( pTD );
*ppException = 0;
break;
}
TYPELIB_DANGER_RELEASE( pTD );
}
} // else perform queryInterface()
default:
// dependent dispatch
cpp_call(
pThis, aVtableSlot,
((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->pReturnTypeRef,
((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->nParams,
((typelib_InterfaceMethodTypeDescription *)pMemberDescr)->pParams,
pReturn, pArgs, ppException );
}
break;
}
default:
{
::com::sun::star::uno::RuntimeException aExc(
"illegal member type description!",
::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface >() );
Type const & rExcType = cppu::UnoType<decltype(aExc)>::get();
// binary identical null reference
::uno_type_any_construct( *ppException, &aExc, rExcType.getTypeLibType(), 0 );
}
}
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|