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1/* Special .init and .fini section support for Nios II.
2 Copyright (C) 2012-2019 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 In addition to the permissions in the GNU Lesser General Public
11 License, the Free Software Foundation gives you unlimited
12 permission to link the compiled version of this file with other
13 programs, and to distribute those programs without any restriction
14 coming from the use of this file. (The GNU Lesser General Public
15 License restrictions do apply in other respects; for example, they
16 cover modification of the file, and distribution when not linked
17 into another program.)
18
19 Note that people who make modified versions of this file are not
20 obligated to grant this special exception for their modified
21 versions; it is their choice whether to do so. The GNU Lesser
22 General Public License gives permission to release a modified
23 version without this exception; this exception also makes it
24 possible to release a modified version which carries forward this
25 exception.
26
27 The GNU C Library is distributed in the hope that it will be useful,
28 but WITHOUT ANY WARRANTY; without even the implied warranty of
29 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
30 Lesser General Public License for more details.
31
32 You should have received a copy of the GNU Lesser General Public
33 License along with the GNU C Library. If not, see
34 <http://www.gnu.org/licenses/>. */
35
36/* crti.S puts a function prologue at the beginning of the .init and
37 .fini sections and defines global symbols for those addresses, so
38 they can be called as functions. The symbols _init and _fini are
39 magic and cause the linker to emit DT_INIT and DT_FINI. */
40
41#include <libc-symbols.h>
42
43#ifndef PREINIT_FUNCTION
44# define PREINIT_FUNCTION __gmon_start__
45#endif
46
47#ifndef PREINIT_FUNCTION_WEAK
48# define PREINIT_FUNCTION_WEAK 1
49#endif
50
51#if PREINIT_FUNCTION_WEAK
52 weak_extern (PREINIT_FUNCTION)
53#else
54 .hidden PREINIT_FUNCTION
55#endif
56
57 .section .init,"ax",@progbits
58 .align 2
59 .global _init
60 .hidden _init
61 .type _init, @function
62_init:
63 addi sp, sp, -8
64 stw r22, 0(sp)
65 nextpc r22
66 1:
67 movhi r8, %hiadj(_gp_got - 1b)
68 addi r8, r8, %lo(_gp_got - 1b)
69 add r22, r22, r8
70 stw ra, 4(sp)
71#if PREINIT_FUNCTION_WEAK
72 movhi r2, %got_hiadj(PREINIT_FUNCTION)
73 addi r2, r2, %got_lo(PREINIT_FUNCTION)
74 add r2, r2, r22
75 ldw r2, 0(r2)
76 beq r2, zero, .L5
77#endif
78 movhi r2, %call_hiadj(PREINIT_FUNCTION)
79 addi r2, r2, %call_lo(PREINIT_FUNCTION)
80 add r2, r2, r22
81 ldw r2, 0(r2)
82 callr r2
83.L5:
84
85 .section .fini,"ax",@progbits
86 .align 2
87 .global _fini
88 .hidden _fini
89 .type _fini, @function
90_fini:
91 addi sp, sp, -8
92 stw r22, 0(sp)
93 nextpc r22
94 1:
95 movhi r8, %hiadj(_gp_got - 1b)
96 addi r8, r8, %lo(_gp_got - 1b)
97 stw ra, 4(sp)
98 add r22, r22, r8
99

Warning: That file was not part of the compilation database. It may have many parsing errors.