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
|
#include<stdio.h>
#include<assert.h>
int main()
{
int rs, rt, dsp;
int ach = 0, acl = 0;
int resulth, resultl, resultdsp;
rs = 0x80000000;
rt = 0x80000000;
resulth = 0x7FFFFFFF;
resultl = 0xFFFFFFFF;
resultdsp = 0x01;
__asm
("mthi %0, $ac1\n\t"
"mtlo %0, $ac1\n\t"
"dpaq_sa.l.w $ac1, %3, %4\n\t"
"mfhi %0, $ac1\n\t"
"mflo %1, $ac1\n\t"
"rddsp %2\n\t"
: "+r"(ach), "+r"(acl), "=r"(dsp)
: "r"(rs), "r"(rt)
);
dsp = (dsp >> 17) & 0x01;
assert(dsp == resultdsp);
assert(ach == resulth);
assert(acl == resultl);
ach = 0x12;
acl = 0x48;
rs = 0x80000000;
rt = 0x80000000;
resulth = 0x7FFFFFFF;
resultl = 0xFFFFFFFF;
resultdsp = 0x01;
__asm
("mthi %0, $ac1\n\t"
"mtlo %0, $ac1\n\t"
"dpaq_sa.l.w $ac1, %3, %4\n\t"
"mfhi %0, $ac1\n\t"
"mflo %1, $ac1\n\t"
"rddsp %2\n\t"
: "+r"(ach), "+r"(acl), "=r"(dsp)
: "r"(rs), "r"(rt)
);
dsp = (dsp >> 17) & 0x01;
assert(dsp == resultdsp);
assert(ach == resulth);
assert(acl == resultl);
ach = 0x741532A0;
acl = 0xfceabb08;
rs = 0x80000000;
rt = 0x80000000;
resulth = 0x7fffffff;
resultl = 0xffffffff;
resultdsp = 0x01;
__asm
("mthi %0, $ac1\n\t"
"mtlo %0, $ac1\n\t"
"dpaq_sa.l.w $ac1, %3, %4\n\t"
"mfhi %0, $ac1\n\t"
"mflo %1, $ac1\n\t"
"rddsp %2\n\t"
: "+r"(ach), "+r"(acl), "=r"(dsp)
: "r"(rs), "r"(rt)
);
dsp = (dsp >> 17) & 0x01;
assert(dsp == resultdsp);
assert(ach == resulth);
assert(acl == resultl);
return 0;
}
|
