OpenCores
URL https://opencores.org/ocsvn/openrisc/openrisc/trunk

Subversion Repositories openrisc

[/] [openrisc/] [trunk/] [gnu-old/] [gdb-6.8/] [sim/] [testsuite/] [sim/] [v850/] [divu.cgs] - Blame information for rev 840

Details | Compare with Previous | View Log

Line No. Rev Author Line
1 24 jeremybenn
# v850 divu
2
# mach: v850e
3
# as(v850e): -mv850e
4
 
5
        .include "testutils.inc"
6
 
7
        seti    6, r1
8
        seti    45, r2
9
        divu    r1, r2, r3
10
 
11
        flags   0
12
        reg     r1, 6
13
        reg     r2, 7
14
        reg     r3, 3
15
 
16
        seti    4, r1
17
        seti    0x40000000, r2
18
        divu    r1, r2, r3
19
 
20
        flags   0
21
        reg     r1, 4
22
        reg     r2, 0x10000000
23
        reg     r3, 0
24
 
25
# If the data is divided by zero, OV=1 and the quotient is undefined.
26
# According to NEC, the S and Z flags, and the output registers, are
27
# unchanged.
28
 
29
        noflags
30
        seti    0, r1
31
        seti    45, r2
32
        seti    67, r3
33
        divu    r1, r2, r3
34
 
35
        flags   v
36
        reg     r2, 45
37
        reg     r3, 67
38
 
39
        allflags
40
        seti    0, r1
41
        seti    45, r2
42
        seti    67, r3
43
        divu    r1, r2, r3
44
 
45
        flags   sat + c + v + s + z
46
        reg     r2, 45
47
        reg     r3, 67
48
 
49
# Zero / (N!=0) => normal
50
 
51
        noflags
52
        seti    45, r1
53
        seti    0, r2
54
        seti    67, r3
55
        divu    r1, r2, r3
56
 
57
        flags   z
58
        reg     r1, 45
59
        reg     r2, 0
60
        reg     r3, 0
61
 
62
# The Z flag is based on the quotient, not the remainder
63
 
64
        noflags
65
        seti    45, r1
66
        seti    16, r2
67
        divu    r1, r2, r3
68
 
69
        flags   z
70
        reg     r2, 0
71
        reg     r3, 16
72
 
73
# If the quot and rem registers are the same, the remainder is stored.
74
 
75
        seti    6, r1
76
        seti    45, r2
77
        divu    r1, r2, r2
78
 
79
        flags   0
80
        reg     r1, 6
81
        reg     r2, 3
82
 
83
        pass

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.