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
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
|
/* First stage loader bootstrap
Copyright (C) 1996,1997 Jakub Jelinek
This program 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 2 of the License, or
(at your option) any later version.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#define BLOCK_START 0x1dc
#define promvec %l5
#define promvers %l4
#define buffer %l0
#define fd %l6
#define dest %l7
.text
.align 4
.global _start, digit_here, letter_here
_start:
mov %o0, promvec
ld [promvec+4], promvers
sethi %hi(0x4000), buffer
sethi %hi(0x10000), dest
call putchar
mov 'S', %o0
tst promvers
bne,a 1f
ld [promvec+136], %o0 ! pv_v2bootargs.bootpath
ld [promvec+128], %o0
ld [%o0], %o3 ! o3 = *pv_v0bootargs
lduh [%o3+132], %o1 ! 'sd', 'fd' or whatever
sll %o1, 8, %o1
or %o1, '(', %o1
sll %o1, 8, %o1
ld [%o3+136], %o0 ! controler id (hope it is less than 10)
add %o0, '0', %o0
or %o1, %o0, %o2
mov ',', %o1
sll %o1, 8, %o1
ld [%o3+140], %o4 ! unit id (again, hope nobody uses wide on v0 prom)
add %o4, '0', %o4
or %o4, %o1, %o4
sll %o4, 16, %o4
or %o4, %o1, %o4
digit_here:
or %o4, 0xDD, %o3
std %o2, [buffer + 0x400] ! put the 'sd(i,j,k' somewhere...
mov ')', %o2
sll %o2, 8, %o2
sth %o2, [buffer + 0x408] ! put there the rest ')\0' as well...
b 4f
ld [promvec+36], %o1 ! pv_v0devops.v0_devopen
1:
ld [promvec+172], %o1
ld [%o0], %o0
add buffer, 0x400, %o2
mov ':', %o4
2:
ldub [%o0], %o3
tst %o3
be 3f
cmp %o3, %o4
be 3f
stb %o3, [%o2]
add %o2, 1, %o2
b 2b
add %o0, 1, %o0
3:
stb %o4, [%o2]
letter_here:
mov 0xDD, %o4
stb %o4, [%o2 + 1]
stb %g0, [%o2 + 2]
4:
call %o1
add buffer, 0x400, %o0
mov %o0, fd
or buffer, BLOCK_START, %l1
mov %l1, %l2
5:
ld [%l2], %l3
add %l2, 4, %l2
tst %l3
be 7f
tst promvers
bne 6f
ld [promvec+44], %o4 ! pv_v0devops.v0_rdblkdev
mov 1, %o1
mov %l3, %o2
mov %l1, %o3
call %o4
mov fd, %o0
cmp %o0, 1
b,a 0f
6:
ld [promvec+188], %o4 ! pv_v2devops.v2_dev_seek
mov %g0, %o1
sll %l3, 9, %o2
call %o4
mov fd, %o0
cmp %o0, -1
be 9f
ld [promvec+180], %o4 ! pv_v2devops.v2_dev_read
mov 512, %o2
mov %l1, %o1
call %o4
mov fd, %o0
cmp %o0, 512
0:
bne 9f
cmp %l1, %i5
bne 5b
add %l1, 512, %l1
call putchar
mov 'I', %o0
b 5b
mov dest, %l1
7:
ldub [dest + 0x08], %o0
cmp %o0, 'L'
bne 9f
nop
call putchar
ld [promvec+176], %l1 ! pv_v2devops.v2_dev_close
tst promvers
be,a 8f
ld [promvec+40], %l1 ! pv_v0devops.v0_dev_close
8:
call %l1
mov fd, %o0
clr %o4 ! we are not an Ultra
jmpl dest + %g0, %g0
mov promvec, %o0
9:
ld [promvec+116], %g1
jmpl %g1 + %g0, %g0
putchar:
tst promvers
bne 1f
ld [promvec+92], %o1 ! pv_nbputchar
jmpl %o1 + %g0, %g0
or buffer, (BLOCK_START + 3 * 512), %i5
1:
stb %o0, [buffer]
ld [promvec+148], %o0 ! pv_v2bootargs.fd_stdout
ld [promvec+184], %o3 ! pv_v2devops.v2_dev_write
mov buffer, %o1
ld [%o0], %o0
mov 1, %o2
jmpl %o3 + %g0, %g0
or buffer, (BLOCK_START + 3 * 512), %i5
|