--- /dev/null
+#include"io.h"
+
+int main(void)
+{
+ long long rs, rt, ach, acl;
+ long long resulth, resultl;
+
+ ach = 0x05;
+ acl = 0x00BBDDCC;
+ rs = 0x80001234;
+ rt = 0x80004321;
+ resulth = 0x05;
+ resultl = 0x772ff463;
+
+ __asm
+ ("mthi %0, $ac1\n\t"
+ "mtlo %1, $ac1\n\t"
+ "mulsaq_s.w.ph $ac1, %2, %3\n\t"
+ "mfhi %0, $ac1\n\t"
+ "mflo %1, $ac1\n\t"
+ : "+r"(ach), "+r"(acl)
+ : "r"(rs), "r"(rt)
+ );
+ if (ach != resulth || acl != resultl) {
+ printf("mulsaq_s.w.ph error\n");
+ return -1;
+ }
+
+ return 0;
+}