--- /dev/null
+#include"io.h"
+
+int main(void)
+{
+ long long rd, rs, rt;
+ long long result;
+
+ rs = 0x12345678;
+ rt = 0x87654321;
+ result = 0xC6E80A2C;
+
+ __asm
+ ("subuh_r.qb %0, %1, %2\n\t"
+ : "=r"(rd)
+ : "r"(rs), "r"(rt)
+ );
+ if (rd != result) {
+ printf("1 subuh_r.qb wrong\n");
+ return -1;
+ }
+
+ rs = 0xBEFC292A;
+ rt = 0x9205C1B4;
+ result = 0x167cb4bb;
+
+ __asm
+ ("subuh_r.qb %0, %1, %2\n\t"
+ : "=r"(rd)
+ : "r"(rs), "r"(rt)
+ );
+ if (rd != result) {
+ printf("2 subuh_r.qb wrong\n");
+ return -1;
+ }
+
+ return 0;
+}