--- /dev/null
+#include "io.h"
+
+int main(void)
+{
+ long long rs, rt, dsp;
+ long long ach = 0, acl = 0;
+ long long resulth, resultl, resultdsp;
+
+ rs = 0x800000FF;
+ rt = 0x80000002;
+ resulth = 0x00;
+ resultl = 0xFFFFFFFF800003FB;
+ resultdsp = 0x01;
+ __asm
+ ("mthi %0, $ac1\n\t"
+ "mtlo %1, $ac1\n\t"
+ "dpaq_s.w.ph $ac1, %3, %4\n\t"
+ "mfhi %0, $ac1\n\t"
+ "mflo %1, $ac1\n\t"
+ "rddsp %2\n\t"
+ : "+r"(ach), "+r"(acl), "=r"(dsp)
+ : "r"(rs), "r"(rt)
+ );
+ dsp = dsp >> 17 & 0x01;
+ if ((dsp != resultdsp) || (ach != resulth) || (acl != resultl)) {
+ printf("dpaq_w.w.ph wrong\n");
+
+ return -1;
+ }
+
+ return 0;
+}