VirtualBox

source: vbox/trunk/src/VBox/Runtime/r3/win/nocrt-startup-dll-win.cpp@ 103795

Last change on this file since 103795 was 98103, checked in by vboxsync, 23 months ago

Copyright year updates by scm.

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1/* $Id: nocrt-startup-dll-win.cpp 98103 2023-01-17 14:15:46Z vboxsync $ */
2/** @file
3 * IPRT - No-CRT - Windows EXE startup code.
4 *
5 * @note Does not run static constructors and destructors!
6 */
7
8/*
9 * Copyright (C) 2006-2023 Oracle and/or its affiliates.
10 *
11 * This file is part of VirtualBox base platform packages, as
12 * available from https://www.virtualbox.org.
13 *
14 * This program is free software; you can redistribute it and/or
15 * modify it under the terms of the GNU General Public License
16 * as published by the Free Software Foundation, in version 3 of the
17 * License.
18 *
19 * This program is distributed in the hope that it will be useful, but
20 * WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
22 * General Public License for more details.
23 *
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, see <https://www.gnu.org/licenses>.
26 *
27 * The contents of this file may alternatively be used under the terms
28 * of the Common Development and Distribution License Version 1.0
29 * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
30 * in the VirtualBox distribution, in which case the provisions of the
31 * CDDL are applicable instead of those of the GPL.
32 *
33 * You may elect to license modified versions of this file under the
34 * terms and conditions of either the GPL or the CDDL or both.
35 *
36 * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
37 */
38
39
40/*********************************************************************************************************************************
41* Header Files *
42*********************************************************************************************************************************/
43#include "internal/iprt.h"
44#include "internal/process.h"
45
46#include <iprt/nt/nt-and-windows.h>
47#include <iprt/getopt.h>
48#include <iprt/message.h>
49#include <iprt/path.h>
50#include <iprt/string.h>
51#include <iprt/utf16.h>
52
53#ifdef IPRT_NO_CRT
54# include <iprt/asm.h>
55# include <iprt/nocrt/stdlib.h>
56#endif
57
58#include "internal/compiler-vcc.h"
59
60
61/*********************************************************************************************************************************
62* Global Variables *
63*********************************************************************************************************************************/
64static volatile int32_t g_cAttached = 0;
65
66
67/*********************************************************************************************************************************
68* Internal Functions *
69*********************************************************************************************************************************/
70extern "C" BOOL WINAPI DllMain(HINSTANCE hInstance, DWORD dwReason, LPVOID pvReserved);
71
72
73DECL_NO_INLINE(static, BOOL) rtVccDllMainForward(HINSTANCE hInstance, DWORD dwReason, LPVOID pvReserved)
74{
75 return DllMain(hInstance, dwReason, pvReserved);
76}
77
78
79
80DECL_NO_INLINE(static, BOOL) rtVccDllMainProcessAttach(HINSTANCE hInstance, LPVOID pvReserved)
81{
82 /*
83 * Initialize the CRT the first time thru.
84 */
85 if (g_cAttached == 0)
86 {
87 rtVccWinInitProcExecPath();
88
89 int rc = rtVccInitializersRunInit();
90 if (RT_FAILURE(rc))
91 return FALSE;
92 }
93 g_cAttached++;
94
95 /*
96 * Call the DllMain function.
97 */
98 BOOL fRet = rtVccDllMainForward(hInstance, DLL_PROCESS_ATTACH, pvReserved);
99
100 /*
101 * On failure, we call the DllMain function again, decrement the init counter
102 * and probably run termination callbacks.
103 */
104 if (!fRet)
105 {
106 rtVccDllMainForward(hInstance, DLL_PROCESS_DETACH, pvReserved);
107 if (--g_cAttached == 0)
108 {
109 rtVccTermRunAtExit();
110 rtVccInitializersRunTerm();
111 }
112 }
113 return fRet;
114}
115
116
117DECL_NO_INLINE(static, BOOL) rtVccDllMainProcessDetach(HINSTANCE hInstance, LPVOID pvReserved)
118{
119 /*
120 * Make sure there isn't an imbalance before calling DllMain and shutting
121 * down our own internals.
122 */
123 if (g_cAttached <= 0)
124 return FALSE;
125
126 /*
127 * Call DllMain.
128 */
129 BOOL fRet = rtVccDllMainForward(hInstance, DLL_PROCESS_DETACH, pvReserved);
130
131 /*
132 * Work g_cAttached and probably do uninitialization. We'll do this regardless
133 * of what DllMain returned.
134 */
135 if (--g_cAttached == 0)
136 {
137 rtVccTermRunAtExit();
138 rtVccInitializersRunTerm();
139 }
140 return fRet;
141}
142
143
144extern "C" BOOL WINAPI _DllMainCRTStartup(HINSTANCE hInstance, DWORD dwReason, LPVOID pvReserved)
145{
146 switch (dwReason)
147 {
148 case DLL_PROCESS_ATTACH:
149#ifdef RT_ARCH_X86
150 rtVccWinInitBssOnNt3((PVOID)hInstance);
151#endif
152 rtVccInitSecurityCookie(); /* This function must be minimal because of this! */
153 return rtVccDllMainProcessAttach(hInstance, pvReserved);
154
155 case DLL_PROCESS_DETACH:
156 return rtVccDllMainProcessDetach(hInstance, pvReserved);
157
158 default:
159 return rtVccDllMainForward(hInstance, dwReason, pvReserved);
160 }
161}
162
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