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
/* -*- 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 <sal/alloca.h>

#include <exception>
#include <typeinfo>

#include <rtl/alloc.h>

#include <com/sun/star/uno/genfunc.hxx>
#include <com/sun/star/uno/RuntimeException.hpp>
#include <o3tl/runtimetooustring.hxx>
#include <uno/data.h>

#include <bridge.hxx>
#include <types.hxx>
#include <unointerfaceproxy.hxx>
#include <vtables.hxx>

#include "abi.hxx"
#include "callvirtualmethod.hxx"
#include "share.hxx"

using namespace ::com::sun::star::uno;

namespace {

// Functions for easier insertion of values to registers or stack
// pSV - pointer to the source
// nr - order of the value [will be increased if stored to register]
// pFPR, pGPR - pointer to the registers
// pDS - pointer to the stack [will be increased if stored here]

// The value in %xmm register is already prepared to be retrieved as a float,
// thus we treat float and double the same
void INSERT_FLOAT_DOUBLE(
    void const * pSV, sal_uInt32 & nr, double * pFPR, sal_uInt64 *& pDS)
{
    if ( nr < x86_64::MAX_SSE_REGS )
        pFPR[nr++] = *static_cast<double const *>( pSV );
    else
        *pDS++ = *static_cast<sal_uInt64 const *>( pSV ); // verbatim!
}

void INSERT_INT64(
    void const * pSV, sal_uInt32 & nr, sal_uInt64 * pGPR, sal_uInt64 *& pDS)
{
    if ( nr < x86_64::MAX_GPR_REGS )
        pGPR[nr++] = *static_cast<sal_uInt64 const *>( pSV );
    else
        *pDS++ = *static_cast<sal_uInt64 const *>( pSV );
}

void INSERT_INT32(
    void const * pSV, sal_uInt32 & nr, sal_uInt64 * pGPR, sal_uInt64 *& pDS)
{
    if ( nr < x86_64::MAX_GPR_REGS )
        pGPR[nr++] = *static_cast<sal_uInt32 const *>( pSV );
    else
        *pDS++ = *static_cast<sal_uInt32 const *>( pSV );
}

void INSERT_INT16(
    void const * pSV, sal_uInt32 & nr, sal_uInt64 * pGPR, sal_uInt64 *& pDS)
{
    if ( nr < x86_64::MAX_GPR_REGS )
        pGPR[nr++] = *static_cast<sal_uInt16 const *>( pSV );
    else
        *pDS++ = *static_cast<sal_uInt16 const *>( pSV );
}

void INSERT_INT8(
    void const * pSV, sal_uInt32 & nr, sal_uInt64 * pGPR, sal_uInt64 *& pDS)
{
    if ( nr < x86_64::MAX_GPR_REGS )
        pGPR[nr++] = *static_cast<sal_uInt8 const *>( pSV );
    else
        *pDS++ = *static_cast<sal_uInt8 const *>( pSV );
}

}

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 )
{
    // Maximum space for [complex ret ptr], values | ptr ...
    // (but will be used less - some of the values will be in pGPR and pFPR)
    sal_uInt64 *pStack = static_cast<sal_uInt64 *>(__builtin_alloca( (nParams + 3) * sizeof(sal_uInt64) ));
    sal_uInt64 *pStackStart = pStack;

    sal_uInt64 pGPR[x86_64::MAX_GPR_REGS];
    sal_uInt32 nGPR = 0;

    double pFPR[x86_64::MAX_SSE_REGS];
    sal_uInt32 nFPR = 0;

    // Return
    typelib_TypeDescription * pReturnTypeDescr = nullptr;
    TYPELIB_DANGER_GET( &pReturnTypeDescr, pReturnTypeRef );
    assert(pReturnTypeDescr);

    void * pCppReturn = nullptr; // if != 0 && != pUnoReturn, needs reconversion (see below)

    bool bSimpleReturn = true;
    if ( pReturnTypeDescr )
    {
        if ( x86_64::return_in_hidden_param( pReturnTypeRef ) )
            bSimpleReturn = false;

        if ( bSimpleReturn )
            pCppReturn = pUnoReturn; // direct way for simple types
        else
        {
            // complex return via ptr
            pCppReturn = bridges::cpp_uno::shared::relatesToInterfaceType( pReturnTypeDescr )?
                         __builtin_alloca( pReturnTypeDescr->nSize ) : pUnoReturn;
            INSERT_INT64( &pCppReturn, nGPR, pGPR, pStack );
        }
    }

    // Push "this" pointer
    void * pAdjustedThisPtr = reinterpret_cast< void ** >( pThis->getCppI() ) + aVtableSlot.offset;
    INSERT_INT64( &pAdjustedThisPtr, nGPR, pGPR, pStack );

    // Args
    void ** pCppArgs = static_cast<void **>(alloca( 3 * sizeof(void *) * nParams ));
    // Indices of values this have to be converted (interface conversion cpp<=>uno)
    sal_Int32 * pTempIndices = reinterpret_cast<sal_Int32 *>(pCppArgs + nParams);
    // Type descriptions for reconversions
    typelib_TypeDescription ** ppTempParamTypeDescr = reinterpret_cast<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 = nullptr;
        TYPELIB_DANGER_GET( &pParamTypeDescr, rParam.pTypeRef );

        if (!rParam.bOut && bridges::cpp_uno::shared::isSimpleType( pParamTypeDescr ))
        {
            uno_copyAndConvertData( pCppArgs[nPos] = alloca( 8 ), pUnoArgs[nPos], pParamTypeDescr,
                                    pThis->getBridge()->getUno2Cpp() );

            switch (pParamTypeDescr->eTypeClass)
            {
            case typelib_TypeClass_HYPER:
            case typelib_TypeClass_UNSIGNED_HYPER:
                INSERT_INT64( pCppArgs[nPos], nGPR, pGPR, pStack );
                break;
            case typelib_TypeClass_LONG:
            case typelib_TypeClass_UNSIGNED_LONG:
            case typelib_TypeClass_ENUM:
                INSERT_INT32( pCppArgs[nPos], nGPR, pGPR, pStack );
                break;
            case typelib_TypeClass_SHORT:
            case typelib_TypeClass_CHAR:
            case typelib_TypeClass_UNSIGNED_SHORT:
                INSERT_INT16( pCppArgs[nPos], nGPR, pGPR, pStack );
                break;
            case typelib_TypeClass_BOOLEAN:
            case typelib_TypeClass_BYTE:
                INSERT_INT8( pCppArgs[nPos], nGPR, pGPR, pStack );
                break;
            case typelib_TypeClass_FLOAT:
            case typelib_TypeClass_DOUBLE:
                INSERT_FLOAT_DOUBLE( pCppArgs[nPos], nFPR, pFPR, pStack );
                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(
                    pCppArgs[nPos] = alloca( pParamTypeDescr->nSize ),
                    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(
                    pCppArgs[nPos] = alloca( pParamTypeDescr->nSize ),
                    pUnoArgs[nPos], pParamTypeDescr, pThis->getBridge()->getUno2Cpp() );

                pTempIndices[nTempIndices] = nPos; // has to be reconverted
                // will be released at reconversion
                ppTempParamTypeDescr[nTempIndices++] = pParamTypeDescr;
            }
            else // direct way
            {
                pCppArgs[nPos] = pUnoArgs[nPos];
                // no longer needed
                TYPELIB_DANGER_RELEASE( pParamTypeDescr );
            }
            INSERT_INT64( &(pCppArgs[nPos]), nGPR, pGPR, pStack );
        }
    }

    try
    {
        try {
            CPPU_CURRENT_NAMESPACE::callVirtualMethod(
                pAdjustedThisPtr, aVtableSlot.index,
                pCppReturn, pReturnTypeRef, bSimpleReturn,
                pStackStart, ( pStack - pStackStart ),
                pGPR, pFPR );
        } catch (const Exception &) {
            throw;
        } catch (const std::exception & e) {
            throw RuntimeException(
                "C++ code threw " + o3tl::runtimeToOUString(typeid(e).name())
                + ": " + o3tl::runtimeToOUString(e.what()));
        } catch (...) {
            throw RuntimeException("C++ code threw unknown exception");
        }

        *ppUnoExc = nullptr;

        // reconvert temporary params
        for ( ; 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, nullptr ); // 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 );
        }
    }
    catch (...)
    {
        // fill uno exception
        CPPU_CURRENT_NAMESPACE::fillUnoException(*ppUnoExc, pThis->getBridge()->getCpp2Uno());

        // temporary params
        for ( ; 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 );
    }
}


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);
#if OSL_DEBUG_LEVEL > 0
    typelib_InterfaceTypeDescription * pTypeDescr = pThis->pTypeDescr;
#endif

    switch (pMemberDescr->eTypeClass)
    {
    case typelib_TypeClass_INTERFACE_ATTRIBUTE:
    {
#if OSL_DEBUG_LEVEL > 0
        // determine vtable call index
        sal_Int32 nMemberPos = reinterpret_cast<typelib_InterfaceMemberTypeDescription const *>(pMemberDescr)->nPosition;
        assert(nMemberPos < pTypeDescr->nAllMembers);
#endif
        VtableSlot aVtableSlot(
                getVtableSlot(
                    reinterpret_cast<
                    typelib_InterfaceAttributeTypeDescription const * >(
                        pMemberDescr)));

        if (pReturn)
        {
            // dependent dispatch
            cpp_call(
                pThis, aVtableSlot,
                reinterpret_cast<typelib_InterfaceAttributeTypeDescription const *>(pMemberDescr)->pAttributeTypeRef,
                0, nullptr, // no params
                pReturn, pArgs, ppException );
        }
        else
        {
            // is SET
            typelib_MethodParameter aParam;
            aParam.pTypeRef =
                reinterpret_cast<typelib_InterfaceAttributeTypeDescription const *>(pMemberDescr)->pAttributeTypeRef;
            aParam.bIn      = true;
            aParam.bOut     = false;

            typelib_TypeDescriptionReference * pReturnTypeRef = nullptr;
            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, // get, then set method
                pReturnTypeRef,
                1, &aParam,
                pReturn, pArgs, ppException );

            typelib_typedescriptionreference_release( pReturnTypeRef );
        }

        break;
    }
    case typelib_TypeClass_INTERFACE_METHOD:
    {
#if OSL_DEBUG_LEVEL > 0
        // determine vtable call index
        sal_Int32 nMemberPos = reinterpret_cast<typelib_InterfaceMemberTypeDescription const *>(pMemberDescr)->nPosition;
        assert(nMemberPos < pTypeDescr->nAllMembers);
#endif
        VtableSlot aVtableSlot(
                getVtableSlot(
                    reinterpret_cast<
                    typelib_InterfaceMethodTypeDescription const * >(
                        pMemberDescr)));

        switch (aVtableSlot.index)
        {
            // standard calls
        case 1: // acquire uno interface
            (*pUnoI->acquire)( pUnoI );
            *ppException = nullptr;
            break;
        case 2: // release uno interface
            (*pUnoI->release)( pUnoI );
            *ppException = nullptr;
            break;
        case 0: // queryInterface() opt
        {
            typelib_TypeDescription * pTD = nullptr;
            TYPELIB_DANGER_GET( &pTD, static_cast< Type * >( pArgs[0] )->getTypeLibType() );
            if (pTD)
            {
                uno_Interface * pInterface = nullptr;
                (*pThis->getBridge()->getUnoEnv()->getRegisteredInterface)(
                    pThis->getBridge()->getUnoEnv(),
                    reinterpret_cast<void **>(&pInterface), pThis->oid.pData, reinterpret_cast<typelib_InterfaceTypeDescription *>(pTD) );

                if (pInterface)
                {
                    ::uno_any_construct(
                        static_cast< uno_Any * >( pReturn ),
                        &pInterface, pTD, nullptr );
                    (*pInterface->release)( pInterface );
                    TYPELIB_DANGER_RELEASE( pTD );
                    *ppException = nullptr;
                    break;
                }
                TYPELIB_DANGER_RELEASE( pTD );
            }
            [[fallthrough]]; // else perform queryInterface()
        }
        default:
            // dependent dispatch
            cpp_call(
                pThis, aVtableSlot,
                reinterpret_cast<typelib_InterfaceMethodTypeDescription const *>(pMemberDescr)->pReturnTypeRef,
                reinterpret_cast<typelib_InterfaceMethodTypeDescription const *>(pMemberDescr)->nParams,
                reinterpret_cast<typelib_InterfaceMethodTypeDescription const *>(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(), nullptr );
    }
    }
}

}

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */