1 /* Startup routines for NetWare.
2 Contributed by Jan Beulich (jbeulich@novell.com)
3 Copyright (C) 2004 Free Software Foundation, Inc.
4
5 This file is part of GCC.
6
7 GCC is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
10 any later version.
11
12 GCC is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING. If not, write to
19 the Free Software Foundation, 51 Franklin Street, Fifth Floor,
20 Boston, MA 02110-1301, USA. */
21
22 #include <stddef.h>
23 #include <stdint.h>
24 #include "unwind-dw2-fde.h"
25
26 int __init_environment (void *);
27 int __deinit_environment (void *);
28
29
30 #define SECTION_DECL(name, decl) decl __attribute__((__section__(name)))
31
32 SECTION_DECL(".ctors", void(*const __CTOR_LIST__)(void))
33 = (void(*)(void))(intptr_t)-1;
34 SECTION_DECL(".ctors$_", void(*const __CTOR_END__)(void)) = NULL;
35
36 SECTION_DECL(".dtors", void(*const __DTOR_LIST__)(void))
37 = (void(*)(void))(intptr_t)-1;
38 SECTION_DECL(".dtors$_", void(*const __DTOR_END__)(void)) = NULL;
39
40 /* No need to use the __[de]register_frame_info_bases functions since
41 for us the bases are NULL always anyway. */
42 void __register_frame_info (const void *, struct object *)
43 __attribute__((__weak__));
44 void *__deregister_frame_info (const void *) __attribute__((__weak__));
45
46 SECTION_DECL(".eh_frame", /*const*/ uint32_t __EH_FRAME_BEGIN__[]) = { };
47 SECTION_DECL(".eh_frame$_", /*const*/ uint32_t __EH_FRAME_END__[]) = {0};
48
49 int
__init_environment(void * unused)50 __init_environment (void *unused __attribute__((__unused__)))
51 {
52 void (* const * pctor)(void);
53 static struct object object;
54
55 if (__register_frame_info)
56 __register_frame_info (__EH_FRAME_BEGIN__, &object);
57
58 for (pctor = &__CTOR_END__ - 1; pctor > &__CTOR_LIST__; --pctor)
59 if (*pctor != NULL)
60 (*pctor)();
61
62 return 0;
63 }
64
65 int
__deinit_environment(void * unused)66 __deinit_environment (void *unused __attribute__((__unused__)))
67 {
68 /* This should be static to prevent calling the same destructor
69 twice (just in case where we get here multiple times). */
70 static void (* const * pdtor)(void) = &__DTOR_LIST__ + 1;
71
72 while (pdtor < &__DTOR_END__)
73 if (*pdtor++ != NULL)
74 pdtor[-1] ();
75
76 if (__deregister_frame_info)
77 __deregister_frame_info(__EH_FRAME_BEGIN__);
78
79 return 0;
80 }
81