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
|
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2010 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#define SYSCALL_WRITE 4004
#define SYSCALL_RESET 4088
#define SYSCALL_EXIT 4001
#define STDOUT 1
#define SHUTDOWN_MAGIC1 0xfee1dead
#define SHUTDOWN_MAGIC2 0x28121969
#ifdef REBOOT
#define SHUTDOWN_MAGIC3 0x01234567
#else
#define SHUTDOWN_MAGIC3 0x4321fedc
#endif
.text
.global start, _start, __start
__start:
_start:
start:
/* write. */
li $v0, SYSCALL_WRITE
li $a0, STDOUT
lui $a1, %hi(message)
addiu $a1, %lo(message)
lui $a2, %hi(messageend)
addiu $a2, %lo(messageend)
subu $a2, $a2, $a1
syscall
/* shutdown. */
li $v0, SYSCALL_RESET
li $a0, SHUTDOWN_MAGIC1
li $a1, SHUTDOWN_MAGIC2
li $a2, SHUTDOWN_MAGIC3
syscall
/* exit(1). Shouldn't be reached. */
li $v0, SYSCALL_EXIT
li $a0, 1
syscall
.data
message:
.ascii "Boot Test Passed Successfully\n" SUCCESSFUL_BOOT_STRING "\n"
messageend:
|
