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
|
#include "io.h"
int main(void)
{
long long rt, rs, dsp;
long long achi, acli;
long long res, resdsp;
achi = 0x87654321;
acli = 0x12345678;
rs = 0x8;
res = 0x123456;
resdsp = 0x01;
__asm
("mthi %2, $ac1\n\t"
"mtlo %3, $ac1\n\t"
"dextrv_r.w %0, $ac1, %4\n\t"
"rddsp %1\n\t"
: "=r"(rt), "=r"(dsp)
: "r"(achi), "r"(acli), "r"(rs)
);
dsp = (dsp >> 23) & 0x1;
if ((dsp != resdsp) || (rt != res)) {
printf("dextrv_r.w error\n");
return -1;
}
achi = 0x87654321;
acli = 0x12345678;
rs = 0x0;
res = 0x12345678;
resdsp = 0x01;
__asm
("mthi %2, $ac1\n\t"
"mtlo %3, $ac1\n\t"
"dextrv_r.w %0, $ac1, %4\n\t"
"rddsp %1\n\t"
: "=r"(rt), "=r"(dsp)
: "r"(achi), "r"(acli), "r"(rs)
);
dsp = (dsp >> 23) & 0x1;
if ((dsp != resdsp) || (rt != res)) {
printf("dextrv_r.w error\n");
return -1;
}
return 0;
}
|