1 #include<stdio.h>
2 #include<assert.h>
3 
4 int main()
5 {
6     int ach, acl;
7     int resulth, resultl;
8 
9     ach = 0xBBAACCFF;
10     acl = 0x1C3B001D;
11 
12     resulth = 0x17755;
13     resultl = 0x99fe3876;
14 
15     __asm
16         ("mthi %0, $ac1\n\t"
17          "mtlo %1, $ac1\n\t"
18          "shilo $ac1, 0x0F\n\t"
19          "mfhi %0, $ac1\n\t"
20          "mflo %1, $ac1\n\t"
21          : "+r"(ach), "+r"(acl)
22         );
23     assert(ach == resulth);
24     assert(acl == resultl);
25 
26 
27     ach = 0x1;
28     acl = 0x80000000;
29 
30     resulth = 0x3;
31     resultl = 0x0;
32 
33     __asm
34         ("mthi %0, $ac1\n\t"
35          "mtlo %1, $ac1\n\t"
36          "shilo $ac1, -1\n\t"
37          "mfhi %0, $ac1\n\t"
38          "mflo %1, $ac1\n\t"
39          : "+r"(ach), "+r"(acl)
40         );
41     assert(ach == resulth);
42     assert(acl == resultl);
43 
44     return 0;
45 }
46