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
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
|
# Copyright (C) 1996, 1998 Free Software Foundation, Inc.
# Contributed by Richard Henderson (rth@tamu.edu)
#
# This file is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 2, or (at your option) any
# later version.
#
# In addition to the permissions in the GNU General Public License, the
# Free Software Foundation gives you unlimited permission to link the
# compiled version of this file with other programs, and to distribute
# those programs without any restriction coming from the use of this
# file. (The General Public License restrictions do apply in other
# respects; for example, they cover modification of the file, and
# distribution when not linked into another program.)
#
# This file is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; see the file COPYING. If not, write to
# the Free Software Foundation, 59 Temple Place - Suite 330,
# Boston, MA 02111-1307, USA.
#
# As a special exception, if you link this library with files
# compiled with GCC to produce an executable, this does not cause
# the resulting executable to be covered by the GNU General Public License.
# This exception does not however invalidate any other reasons why
# the executable file might be covered by the GNU General Public License.
#
# Heads of the constructor/destructor lists.
#
# The __*TOR_LIST__ symbols are not global because when this file is used
# in a shared library, we do not want the symbol to fall over to the
# application's lists.
.section .ctors,"aw"
.align 3
__CTOR_LIST__:
.quad -1
.section .dtors,"aw"
.align 3
__DTOR_LIST__:
.quad -1
.section .eh_frame,"aw"
__EH_FRAME_BEGIN__:
#
# Fragment of the ELF _fini routine that invokes our dtor cleanup.
#
.section .fini,"ax"
# Since the bits of the _fini function are spread across many
# object files, each potentially with its own GP, we must
# assume we need to load ours. Further, our .fini section
# can easily be more than 4MB away from our .text bits so we
# can't use bsr.
br $29,1f
1: ldgp $29,0($29)
jsr $26,__do_global_dtors_aux
ldgp $29,0($26)
# Ideally this call would go in crtend.o, except that we can't
# get hold of __EH_FRAME_BEGIN__ there.
jsr $26,__do_frame_takedown
# Must match the alignment we got from crti.o else we get
# zero-filled holes in our _fini function and then SIGILL.
.align 3
#
# Fragment of the ELF _init routine that sets up the frame info.
#
.section .init,"ax"
br $29,1f
1: ldgp $29,0($29)
jsr $26,__do_frame_setup
.align 3
#
# Invoke our destructors in order.
#
.data
# Support recursive calls to exit.
$ptr: .quad __DTOR_LIST__
.text
.align 3
.ent __do_global_dtors_aux
__do_global_dtors_aux:
lda $30,-16($30)
.frame $30,16,$26,0
stq $9,8($30)
stq $26,0($30)
.mask 0x4000200,-16
.prologue 0
lda $9,$ptr
br 1f
0: stq $1,0($9)
jsr $26,($27)
1: ldq $1,0($9)
ldq $27,8($1)
addq $1,8,$1
bne $27,0b
ldq $26,0($30)
ldq $9,8($30)
lda $30,16($30)
ret
.end __do_global_dtors_aux
#
# Install our frame info.
#
# ??? How can we rationally keep this size correct?
.section .bss
.type $object,@object
.align 3
$object:
.zero 48
.size $object, 48
.text
.align 3
.ent __do_frame_setup
__do_frame_setup:
ldgp $29,0($27)
lda $30,-16($30)
.frame $30,16,$26,0
stq $26,0($30)
.mask 0x4000000,-16
.prologue 1
lda $1,__register_frame_info
beq $1,0f
lda $16,__EH_FRAME_BEGIN__
lda $17,$object
jsr $26,__register_frame_info
ldq $26,0($30)
0: lda $30,16($30)
ret
.end __do_frame_setup
#
# Remove our frame info.
#
.align 3
.ent __do_frame_takedown
__do_frame_takedown:
ldgp $29,0($27)
lda $30,-16($30)
.frame $30,16,$26,0
stq $26,0($30)
.mask 0x4000000,-16
.prologue 1
lda $1,__deregister_frame_info
beq $1,0f
lda $16,__EH_FRAME_BEGIN__
jsr $26,__deregister_frame_info
ldq $26,0($30)
0: lda $30,16($30)
ret
.end __do_frame_takedown
.weak __register_frame_info
.weak __deregister_frame_info
.section .rodata
.ascii "$FreeBSD$\0"
|
