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
|
/*
* Copyright (C) 2017 Hangzhou C-SKY Microsystems co.,ltd.
*
* Licensed under the LGPL v2.1 or later, see the file COPYING.LIB
* in this tarball.
*/
#include <sysdep.h>
.text
.global _start
.type _start,%function
.global __exit
.global atexit
.global _init
.global _fini
.global main
.global __uClibc_main
/*
* argc, argv and envp are on the stack
*
* Call:
* void __uClibc_main(
* int (*main)(int, char **, char **),
* int argc,
* char **argv,
* void (*app_init)(void),
* void (*app_fini)(void),
* void (*rtld_fini)(void),
* void *stack_end attribute_unused);
*/
_start:
#ifdef __PIC__
__GET_GB
lrw a0, main@GOT
addu a0, gb
ldw a0, (a0)
ldw a1, (sp)
mov a2, sp
addi a2, 4
mov a3, sp /* push stack_end */
subi sp, 8
stw a3, (sp)
lrw a3, _init@GOT
addu a3, gb
ldw a3, (a3)
#ifdef __CSKYABIV2__
subi sp, 8
lrw l4, _fini@GOT
addu l4, gb
ldw l4, (l4)
stw l4, (sp)
stw r7, (sp, 4) /* push rtld_fini */
#else
lrw a4, _fini@GOT
addu a4, gb
ldw a4, (a4)
#endif
lrw l4, __uClibc_main@PLT
addu l4, gb
ldw l4, (l4)
jsr l4
#else /* __PIC__ */
lrw a0, main
ldw a1, (sp)
mov a2, sp
addi a2, 4
mov a3, sp /* push stack_end */
subi sp, 8
stw a3, (sp)
lrw a3, _init
#ifdef __CSKYABIV2__
subi sp, 8
lrw l4, _fini
stw l4, (sp)
stw r7, (sp, 4)
#else
lrw a4, _fini
#endif
lrw l4, __uClibc_main
jsr l4
#endif /* __PIC__ */
bsr __exit
__exit:
DO_CALL(exit, 0)
br .
|
