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
|
// Test extraction from accumulators:
// SIGNED FRACTIONAL and SIGNED INT mode into register PAIR
# mach: bfin
.include "testutils.inc"
start
// load r0=0x7ffffff0
// load r1=0xfffffff0
// load r2=0x0fffffff
// load r3=0x80100000
// load r4=0x000000ff
loadsym P0, data0;
R0 = [ P0 ++ ];
R1 = [ P0 ++ ];
R2 = [ P0 ++ ];
R3 = [ P0 ++ ];
R4 = [ P0 ++ ];
// extract
// 0x007ffffff0 -> 0x7fffffff0
A1 = A0 = 0;
A1.w = R0;
A0.w = R0;
R7 = A1, R6 = A0;
DBGA ( R7.L , 0xfff0 );
DBGA ( R7.H , 0x7fff );
DBGA ( R6.L , 0xfff0 );
DBGA ( R6.H , 0x7fff );
// extract with saturate
// 0x00fffffff0 -> 0x7ffffffff
A1 = A0 = 0;
A1.w = R1;
A0.w = R1;
R7 = A1, R6 = A0;
DBGA ( R7.L , 0xffff );
DBGA ( R7.H , 0x7fff );
DBGA ( R6.L , 0xffff );
DBGA ( R6.H , 0x7fff );
// extract with saturate negative
// 0xff0ffffff0 -> 0x80000000
A1 = A0 = 0;
A1.w = R2;
A0.w = R2;
A1.x = R4.L;
A0.x = R4.L;
R7 = A1, R6 = A0;
DBGA ( R7.L , 0x0000 );
DBGA ( R7.H , 0x8000 );
DBGA ( R6.L , 0x0000 );
DBGA ( R6.H , 0x8000 );
// extract integer (same as fract)
// 0x007ffffff0 -> 0x7fffffff0
A1 = A0 = 0;
A1.w = R0;
A0.w = R0;
R7 = A1, R6 = A0 (IS);
DBGA ( R7.L , 0xfff0 );
DBGA ( R7.H , 0x7fff );
DBGA ( R6.L , 0xfff0 );
DBGA ( R6.H , 0x7fff );
// extract with saturate negative
// 0xff0ffffff0 -> 0x80000000
A1 = A0 = 0;
A1.w = R2;
A0.w = R2;
A1.x = R4.L;
A0.x = R4.L;
R7 = A1, R6 = A0 (IS);
DBGA ( R7.L , 0x0000 );
DBGA ( R7.H , 0x8000 );
DBGA ( R6.L , 0x0000 );
DBGA ( R6.H , 0x8000 );
pass
.data
data0:
.dw 0xfff0
.dw 0x7fff
.dw 0xfff0
.dw 0xffff
.dw 0xffff
.dw 0x0fff
.dw 0x0000
.dw 0x8010
.dw 0x00ff
.dw 0x0000
|