1 /**
2 * Copyright (c) 2019, The Linux Foundation. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 * * Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above
10 * copyright notice, this list of conditions and the following
11 * disclaimer in the documentation and/or other materials provided
12 * with the distribution.
13 * * Neither the name of The Linux Foundation nor the names of its
14 * contributors may be used to endorse or promote products derived
15 * from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
24 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
25 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
26 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
27 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30 #ifndef SHARED_H
31 #define SHARED_H
32
33 #if defined(__NIX)
34 // TODO these sections not supported?
35 //static __so_func *__autostart[] __attribute__((section (".CRT$XIU"))) = { (__so_func*)__so_ctor };
36 //static __so_func *__autoexit[] __attribute__((section (".CRT$XPU"))) = { (__so_func*)__so_dtor };
37
38 #define SHARED_OBJECT_API_ENTRY(ctor, dtor)
39
40 #elif defined(_WIN32)
41 #include <windows.h>
42
43 typedef int __so_cb(void);
44 static __so_cb *__so_get_ctor();
45 static __so_cb *__so_get_dtor();
46
47 typedef void __so_func(void);
__so_ctor()48 static void __so_ctor() {
49 (void)(__so_get_ctor())();
50 }
51
__so_dtor()52 static void __so_dtor() {
53 (void)(__so_get_dtor())();
54 }
55
56 #pragma data_seg(".CRT$XIU")
57 static __so_func *__autostart[] = { (__so_func*)__so_ctor };
58 #pragma data_seg(".CRT$XPU")
59 static __so_func *__autoexit[] = { (__so_func*)__so_dtor };
60 #pragma data_seg()
61
62 #define SHARED_OBJECT_API_ENTRY(ctor, dtor)\
63 static __so_cb *__so_get_ctor() { return (__so_cb*)ctor; }\
64 static __so_cb *__so_get_dtor() { return (__so_cb*)dtor; }
65
66 #else //better be gcc
67
68 #define SHARED_OBJECT_API_ENTRY(ctor, dtor)\
69 __attribute__((constructor)) \
70 static void __ctor__##ctor(void) {\
71 (void)ctor();\
72 }\
73 \
74 __attribute__((destructor))\
75 static void __dtor__##dtor(void) {\
76 (void)dtor();\
77 }
78
79 #endif //ifdef _WIN32
80
81 #endif // SHARED_H
82