-
Notifications
You must be signed in to change notification settings - Fork 0
/
thomtest.s
142 lines (102 loc) · 1.54 KB
/
thomtest.s
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
@ Start writing code
.include "mov32.inc"
.set STDOUT, 1
.set READ, 0x03
.set WRITE, 0x04
@constant min bound
.set MIN, 0
@constant max bound
.set MAX, 60
.balign 4
.data
playerBody:
.asciz "#"
.set body_len, .-playerBody
space:
.ascii " "
gameKey:
.skip 4
player:
.skip 1
.set length, .-player
.word 30
.set player_len, .-length
.balign 4
.text
//drawGame:
// mov r0, #MIN
drawPlayer:
mov r3, lr
mov r0, #STDOUT
mov32 r1, playerBody
mov r2, #body_len
mov r7, #WRITE
svc #0
mov lr, r3
bx lr
gameLoop:
mov r4, lr
bl clear_screen
bl cursor_home
/*.L1:
bl clear_screen
bl cursor_home
bl drawPlayer
b .L0
.L0:
mov r0, #STDIN
mov r1, r6
mov r2, #4096
mov r7, #READ
svc #0
*/
mov lr, r4
bx lr
.global _start
_start:
bl gameLoop
bl term_inited
sub sp, sp, #1
while_loop:
mov r7, #READ
mov r0, #STDIN
mov r1, sp
mov r2, #1
svc #0
// If nothing was read, don't bother writing
cmp r0, #0
beq skip_print
skip_print:
ldrb r0, [sp]
cmp r0, #32
bne while_loop
add sp, sp, #1
bl term_quit
mov r7, #1
svc #0
// Print a byte as a number
p_byte:
mov r3, sp // String pointer
sub sp, sp, #4
mov r12, #10
mov r1, #10 // Newline
strb r1, [r3, #-1]!
b test_non_zero
while_digits:
// Divide/Modulus (r1, r2)
udiv r1, r0, r12
mls r2, r1, r12, r0
add r2, r2, #48 // r2 = r2 + "0"
strb r2, [r3, #-1]!
mov r0, r1
test_non_zero:
cmp r0, #0
bne while_digits
mov r7, #WRITE
mov r0, #STDOUT
mov r1, r3
add r2, sp, #4
sub r2, r2, r1
svc #0
add sp, sp, #4
bx lr