1#include<stdio.h> 2#include<assert.h> 3 4int main() 5{ 6 int rs, rt, dsp; 7 int ach = 0, acl = 0; 8 int resulth, resultl, resultdsp; 9 10 rs = 0x800000FF; 11 rt = 0x80000002; 12 resulth = 0x00; 13 resultl = 0x800003FB; 14 resultdsp = 0x01; 15 __asm 16 ("mthi %0, $ac1\n\t" 17 "mtlo %1, $ac1\n\t" 18 "dpaq_s.w.ph $ac1, %3, %4\n\t" 19 "mfhi %0, $ac1\n\t" 20 "mflo %1, $ac1\n\t" 21 "rddsp %2\n\t" 22 : "+r"(ach), "+r"(acl), "=r"(dsp) 23 : "r"(rs), "r"(rt) 24 ); 25 dsp = dsp >> 17 & 0x01; 26 assert(dsp == resultdsp); 27 assert(ach == resulth); 28 assert(acl == resultl); 29 30 return 0; 31} 32