--- /dev/null
+#include<stdio.h>
+#include<assert.h>
+
+int main()
+{
+ int ach, acl;
+ int resulth, resultl;
+
+ ach = 0xBBAACCFF;
+ acl = 0x1C3B001D;
+
+ resulth = 0x17755;
+ resultl = 0x99fe3876;
+
+ __asm
+ ("mthi %0, $ac1\n\t"
+ "mtlo %1, $ac1\n\t"
+ "shilo $ac1, 0x0F\n\t"
+ "mfhi %0, $ac1\n\t"
+ "mflo %1, $ac1\n\t"
+ : "+r"(ach), "+r"(acl)
+ );
+ assert(ach == resulth);
+ assert(acl == resultl);
+
+
+ ach = 0x1;
+ acl = 0x80000000;
+
+ resulth = 0x3;
+ resultl = 0x0;
+
+ __asm
+ ("mthi %0, $ac1\n\t"
+ "mtlo %1, $ac1\n\t"
+ "shilo $ac1, -1\n\t"
+ "mfhi %0, $ac1\n\t"
+ "mflo %1, $ac1\n\t"
+ : "+r"(ach), "+r"(acl)
+ );
+ assert(ach == resulth);
+ assert(acl == resultl);
+
+ return 0;
+}