--- /dev/null
+#include"io.h"
+
+int main(void)
+{
+ long long rd, rs, rt;
+ long long result;
+
+ rs = 0xFF0055AA;
+ rt = 0x0113421B;
+ result = 0xffffffff80094B62;
+ __asm
+ ("adduh.qb %0, %1, %2\n\t"
+ : "=r"(rd)
+ : "r"(rs), "r"(rt)
+ );
+ if (rd != result) {
+ printf("adduh.qb error\n");
+ return -1;
+ }
+ rs = 0xFFFF0FFF;
+ rt = 0x00010111;
+ result = 0x7F800888;
+
+ __asm
+ ("adduh.qb %0, %1, %2\n\t"
+ : "=r"(rd)
+ : "r"(rs), "r"(rt)
+ );
+ if (rd != result) {
+ printf("adduh.qb error\n");
+ return -1;
+ }
+
+ return 0;
+}