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
|
/* Copyright (C) 1991, 1992 Free Software Foundation, Inc.
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, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
.global _start
.global __main
.global _end
/* .global __data_start */
.bss
.global environ
environ:
.long 0
.text
_start: /* renamed from __start */
nop
nop
movea.l %d5, %a5
lea __bss_start(%a5), %a0
lea end(%a5), %a1
/* Copy 0 to %a0 until %a0 == %a1 */
/*
From my understanding of linux/fs/binfmt_flat.c for uClinux,
this is not necessary anymore. The loader will clear out
the BSS for us. - jgraves@deltamobile.com
L1:
movel #0, %a0@+
cmpal %a0, %a1
bhi L1
*/
move.l 8(%sp), %d5
move.l %d5, environ(%a5)
bsr main
move.l %d0,%sp@-
bsr exit /* Invoke exit() routine */
#ifdef NO_LIBGCC
/* If that didn't kill us, ... */
_exit:
move.l %sp@+,%d1
moveq #1,%d0 /* SYS_exit */
trap #0
__main:
rts
#else
.global _cleanup
_cleanup:
rts /* nothing to clean up */
#endif /* NO_LIBGCC */
|