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
|
/* -*- 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 <com/sun/star/uno/genfunc.hxx>
#include "com/sun/star/uno/RuntimeException.hpp"
#include <uno/data.h>
#include "bridge.hxx"
#include "types.hxx"
#include "unointerfaceproxy.hxx"
#include "vtables.hxx"
#include "share.hxx"
#include "callvirtualmethod.hxx"
void CPPU_CURRENT_NAMESPACE::callVirtualMethod(
void * pAdjustedThisPtr,
sal_Int32 nVtableIndex,
void * pRegisterReturn,
typelib_TypeClass eReturnType,
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!");
assert(nStackLongs && pStackLongs && "### no stack in callVirtualMethod !");
// never called
if (! pAdjustedThisPtr) CPPU_CURRENT_NAMESPACE::dummy_can_throw_anything("xxx"); // address something
long edx, eax; // for register returns
void * stackptr;
asm volatile (
"mov %%esp, %2\n\t"
// preserve potential 128bit stack alignment
"and $0xfffffff0, %%esp\n\t"
"mov %3, %%eax\n\t"
"lea -4(,%%eax,4), %%eax\n\t"
"and $0xf, %%eax\n\t"
"sub $0xc, %%eax\n\t"
"add %%eax, %%esp\n\t"
// copy values
"mov %3, %%eax\n\t"
"mov %%eax, %%edx\n\t"
"dec %%edx\n\t"
"shl $2, %%edx\n\t"
"add %4, %%edx\n"
"Lcopy:\n\t"
"pushl 0(%%edx)\n\t"
"sub $4, %%edx\n\t"
"dec %%eax\n\t"
"jne Lcopy\n\t"
// do the actual call
"mov %5, %%edx\n\t"
"mov 0(%%edx), %%edx\n\t"
"mov %6, %%eax\n\t"
"shl $2, %%eax\n\t"
"add %%eax, %%edx\n\t"
"mov 0(%%edx), %%edx\n\t"
"call *%%edx\n\t"
// save return registers
"mov %%eax, %0\n\t"
"mov %%edx, %1\n\t"
// cleanup stack
"mov %2, %%esp\n\t"
: "=m"(eax), "=m"(edx), "=m"(stackptr)
: "m"(nStackLongs), "m"(pStackLongs), "m"(pAdjustedThisPtr), "m"(nVtableIndex)
: "eax", "ecx", "edx" );
switch( eReturnType )
{
case typelib_TypeClass_HYPER:
case typelib_TypeClass_UNSIGNED_HYPER:
((long*)pRegisterReturn)[1] = edx;
case typelib_TypeClass_LONG:
case typelib_TypeClass_UNSIGNED_LONG:
case typelib_TypeClass_CHAR:
case typelib_TypeClass_ENUM:
((long*)pRegisterReturn)[0] = eax;
break;
case typelib_TypeClass_SHORT:
case typelib_TypeClass_UNSIGNED_SHORT:
*(unsigned short*)pRegisterReturn = eax;
break;
case typelib_TypeClass_BOOLEAN:
case typelib_TypeClass_BYTE:
*(unsigned char*)pRegisterReturn = eax;
break;
case typelib_TypeClass_FLOAT:
asm ( "fstps %0" : : "m"(*(char *)pRegisterReturn) );
break;
case typelib_TypeClass_DOUBLE:
asm ( "fstpl %0\n\t" : : "m"(*(char *)pRegisterReturn) );
break;
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
