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
|
/* Startup code for SH5 & ELF.
Copyright (C) 1999 Free Software Foundation, Inc.
Copyright (C) 2001 Hewlett-Packard Australia
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
see <http://www.gnu.org/licenses/>. */
/* This is the canonical entry point, usually the first thing in the text
segment.
At this entry point, most registers' values are unspecified, except:
sp The stack contains the arguments and environment:
0(sp) argc
4(sp) argv[0]
...
(4*argc)(sp) NULL
(4*(argc+1))(sp) envp[0]
...
NULL
*/
.file "crt1.S"
.globl _start
.type _start,%function
.type main,%function
.section .text64,"xa"
.align 2 /* 2^2 = 4 */
_start:
/* __uClibc_main (main, argc, argv, init, fini) */
movi __main, r18
or r2, r63, r18
/* Pop argc off the stack and save a pointer to argv */
ld.l r15, 0, r3 /* argc */
addi r15, 4, r4 /* argv */
movi _init, r5
movi _fini, r6
/* call main() */
movi __uClibc_main, r17
ptabs/l r17, tr0
blink tr0, r18
/* should never get here....*/
movi abort, r17
ptabs/l r17, tr0
blink tr0, r63 /* call abort() => (r63) do not come back ... */
/*
* The following is a stub to stop the GNU toolchain
* from calling its C-RTL initialization routines.
*/
__main:
movi main, r18
ptabs/l r18, tr0
blink tr0, r63
/* Define a symbol for the first piece of initialized data. */
.data
.globl __data_start
__data_start:
.long 0
.weak data_start
data_start = __data_start
|
