|  | #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; | 
|  | } |