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
|
/* $OpenBSD: crtbeginS.c,v 1.16 2015/04/07 01:27:06 guenther Exp $ */
/* $NetBSD: crtbegin.c,v 1.1 1996/09/12 16:59:03 cgd Exp $ */
/*
* Copyright (c) 1993 Paul Kranenburg
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Paul Kranenburg.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Run-time module for GNU C++ compiled shared libraries.
*
* The linker constructs the following arrays of pointers to global
* constructors and destructors. The first element contains the
* number of pointers in each.
* The tables are also null-terminated.
*/
#include <stdlib.h>
#include "md_init.h"
#include "os-note-elf.h"
#include "extern.h"
/*
* java class registration hooks
*/
static void *__JCR_LIST__[]
__attribute__((section(".jcr"), aligned(sizeof(void*)))) = { };
extern void _Jv_RegisterClasses (void *)
__attribute__((weak));
/*
* Include support for the __cxa_atexit/__cxa_finalize C++ abi for
* gcc > 2.x. __dso_handle is NULL in the main program and a unique
* value for each C++ shared library. For more info on this API, see:
*
* http://www.codesourcery.com/cxx-abi/abi.html#dso-dtor
*/
void *__dso_handle = &__dso_handle;
__asm(".hidden __dso_handle");
long __guard_local __dso_hidden __attribute__((section(".openbsd.randomdata")));
extern int __cxa_atexit(void (*)(void *), void *, void *) __attribute__((weak));
extern void __cxa_finalize(void *) __attribute__((weak));
int
atexit(void (*fn)(void))
{
return (__cxa_atexit((void (*)(void *))fn, NULL, &__dso_handle));
}
asm(".hidden atexit");
/*
* Ditto for pthread_atfork()
*/
int _thread_atfork(void (*)(void), void (*)(void), void (*)(void), void *)
__attribute__((weak));
int
pthread_atfork(void (*prep)(void), void (*parent)(void), void (*child)(void))
{
return (_thread_atfork(prep, parent, child, &__dso_handle));
}
/* hppa doesn't permit directives in first column, so space after newline */
asm(".hidden pthread_atfork\n .weak pthread_atfork");
static init_f __CTOR_LIST__[1]
__attribute__((section(".ctors"))) = { (void *)-1 }; /* XXX */
static init_f __DTOR_LIST__[1]
__attribute__((section(".dtors"))) = { (void *)-1 }; /* XXX */
static void __dtors(void) __used;
static void __ctors(void) __used;
void
__ctors(void)
{
unsigned long i = (unsigned long) __CTOR_LIST__[0];
init_f *p;
if (i == -1) {
for (i = 1; __CTOR_LIST__[i] != NULL; i++)
;
i--;
}
p = __CTOR_LIST__ + i;
while (i--) {
(**p--)();
}
}
static void
__dtors(void)
{
init_f *p = __DTOR_LIST__ + 1;
while (*p) {
(**p++)();
}
}
void _init(void);
void _fini(void);
static void _do_init(void) __used;
static void _do_fini(void) __used;
MD_SECTION_PROLOGUE(".init", _init);
MD_SECTION_PROLOGUE(".fini", _fini);
MD_SECT_CALL_FUNC(".init", _do_init);
MD_SECT_CALL_FUNC(".fini", _do_fini);
void
_do_init(void)
{
static int initialized = 0;
/*
* Call global constructors.
* Arrange to call global destructors at exit.
*/
if (!initialized) {
initialized = 1;
if (__JCR_LIST__[0] && _Jv_RegisterClasses)
_Jv_RegisterClasses(__JCR_LIST__);
__ctors();
}
}
void
_do_fini(void)
{
static int finalized = 0;
if (!finalized) {
finalized = 1;
if (__cxa_finalize != NULL)
__cxa_finalize(__dso_handle);
/*
* since the _init() function sets up the destructors to
* be called by atexit, do not call the destructors here.
*/
__dtors();
}
}
|
