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comparison gcc/config/sh/crti.asm @ 0:a06113de4d67

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author kent <kent@cr.ie.u-ryukyu.ac.jp>
date Fri, 17 Jul 2009 14:47:48 +0900
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-1:000000000000 0:a06113de4d67
1 /* Copyright (C) 2000, 2001, 2009 Free Software Foundation, Inc.
2 This file was adapted from glibc sources.
3
4 This file is part of GCC.
5
6 GCC is free software; you can redistribute it and/or modify it
7 under the terms of the GNU General Public License as published by the
8 Free Software Foundation; either version 3, or (at your option) any
9 later version.
10
11 GCC is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 General Public License for more details.
15
16 Under Section 7 of GPL version 3, you are granted additional
17 permissions described in the GCC Runtime Library Exception, version
18 3.1, as published by the Free Software Foundation.
19
20 You should have received a copy of the GNU General Public License and
21 a copy of the GCC Runtime Library Exception along with this program;
22 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
23 <http://www.gnu.org/licenses/>. */
24
25
26 /* The code in sections .init and .fini is supposed to be a single
27 regular function. The function in .init is called directly from
28 start in crt1.asm. The function in .fini is atexit()ed in crt1.asm
29 too.
30
31 crti.asm contributes the prologue of a function to these sections,
32 and crtn.asm comes up the epilogue. STARTFILE_SPEC should list
33 crti.o before any other object files that might add code to .init
34 or .fini sections, and ENDFILE_SPEC should list crtn.o after any
35 such object files. */
36
37 .section .init
38 /* The alignment below can't be smaller, otherwise the mova below
39 breaks. Yes, we might align just the label, but then we'd be
40 exchanging an alignment here for one there, since the code fragment
41 below ensures 4-byte alignment on __ELF__. */
42 #ifdef __ELF__
43 .p2align 2
44 #else
45 .p2align 1
46 #endif
47 .global _init
48 _init:
49 #if __SHMEDIA__
50 addi r15, -16, r15
51 st.q r15, 8, r14
52 st.q r15, 0, r18
53 add r15, r63, r14
54 #elif __SH5__ && ! __SHMEDIA__
55 mov r15,r0
56 add #-8,r15
57 mov.l r14,@-r0
58 sts.l pr,@-r0
59 mov r15,r14
60 nop
61 #else
62 #ifdef __ELF__
63 mov.l r12,@-r15
64 mova 0f,r0
65 mov.l 0f,r12
66 #endif
67 mov.l r14,@-r15
68 #ifdef __ELF__
69 add r0,r12
70 #endif
71 sts.l pr,@-r15
72 #ifdef __ELF__
73 bra 1f
74 #endif
75 mov r15,r14
76 #ifdef __ELF__
77 0: .long _GLOBAL_OFFSET_TABLE_
78 1:
79 #endif
80 #endif /* __SHMEDIA__ */
81
82 .section .fini
83 /* The alignment below can't be smaller, otherwise the mova below
84 breaks. Yes, we might align just the label, but then we'd be
85 exchanging an alignment here for one there, since the code fragment
86 below ensures 4-byte alignment on __ELF__. */
87 #ifdef __ELF__
88 .p2align 2
89 #else
90 .p2align 1
91 #endif
92 .global _fini
93 _fini:
94 #if __SHMEDIA__
95 addi r15, -16, r15
96 st.q r15, 8, r14
97 st.q r15, 0, r18
98 add r15, r63, r14
99 #elif __SH5__ && ! __SHMEDIA__
100 mov r15,r0
101 add #-8,r15
102 mov.l r14,@-r0
103 sts.l pr,@-r0
104 mov r15,r14
105 nop
106 #else
107 #ifdef __ELF__
108 mov.l r12,@-r15
109 mova 0f,r0
110 mov.l 0f,r12
111 #endif
112 mov.l r14,@-r15
113 #ifdef __ELF__
114 add r0,r12
115 #endif
116 sts.l pr,@-r15
117 #ifdef __ELF__
118 bra 1f
119 #endif
120 mov r15,r14
121 #ifdef __ELF__
122 0: .long _GLOBAL_OFFSET_TABLE_
123 1:
124 #endif
125 #endif /* __SHMEDIA__ */