1#include"io.h" 2 3int main(void) 4{ 5 long long rd, rs, rt, dsp; 6 long long result, resultdsp; 7 8 rs = 0x87654321; 9 rt = 0x12345678; 10 result = 0x75310000; 11 resultdsp = 0x01; 12 13 __asm 14 ("subu_s.ph %0, %2, %3\n\t" 15 "rddsp %1\n\t" 16 : "=r"(rd), "=r"(dsp) 17 : "r"(rs), "r"(rt) 18 ); 19 dsp = (dsp >> 20) & 0x01; 20 if (dsp != resultdsp || rd != result) { 21 printf("subu_s.ph error\n"); 22 return -1; 23 } 24 return 0; 25} 26