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
|
# (C) Copyright IBM Corp. 2005, 2006
#
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
# * 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.
# * Neither the name of IBM nor the names of its contributors may be
# used to endorse or promote products derived from this software without
# specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT OWNER OR CONTRIBUTORS 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.
#
# This file just makes sure that the .fini and .init sections do in
# fact return. Users may put any desired instructions in those sections.
# This file is the last thing linked into any executable.
# Note - this macro is complimented by the FUNC_START macro
# in crti.S. If you change this macro you must also change
# that macro match.
#
# Note - we do not try any fancy optimisations of the return
# sequences here, it is just not worth it. Instead keep things
# simple. The link register is restored and then the correct
# function return instruction is performed.
.macro FUNC_END
ai $sp, $sp, 32
lqd $lr, 16($sp)
bi $lr
.endm
.file "crtn.S"
.section ".init"
FUNC_END
.section ".fini"
FUNC_END
# To ensure nothing is linked at address 0, provide a dummy
# .interrupt section. This is in crtn.S to make sure any
# user-provided real .interrupt section will get linked
# in front of this dummy.
.section ".interrupt","ax"
.align 2
heq $0,$0
# end of crtn.S
|
