| #include "io.h" | 
 |  | 
 | int main(void) | 
 | { | 
 |     long long rd, rs, rt, dspreg; | 
 |     long long result, dspresult; | 
 |  | 
 |     rs = 0x123456787FFF0000; | 
 |     rt = 0x1111111180000000; | 
 |     result = 0x23456789FFFF0000; | 
 |     dspresult = 0x0; | 
 |  | 
 |     __asm("addu.qh %0, %2, %3\n\t" | 
 |           "rddsp %1\n\t" | 
 |           : "=r"(rd), "=r"(dspreg) | 
 |           : "r"(rs), "r"(rt) | 
 |          ); | 
 |  | 
 |     dspreg = ((dspreg >> 20) & 0x01); | 
 |     if ((rd != result) || (dspreg != dspresult)) { | 
 |         printf("addu.qh error\n"); | 
 |         return -1; | 
 |     } | 
 |  | 
 |     rs = 0x123456787FFF0000; | 
 |     rt = 0x1111111180020000; | 
 |     result = 0x23456789FFFF0000; | 
 |     dspresult = 0x01; | 
 |  | 
 |     __asm("addu.qh %0, %2, %3\n\t" | 
 |           "rddsp %1\n\t" | 
 |           : "=r"(rd), "=r"(dspreg) | 
 |           : "r"(rs), "r"(rt) | 
 |          ); | 
 |  | 
 |     dspreg = ((dspreg >> 20) & 0x01); | 
 |     if ((rd != result) || (dspreg != dspresult)) { | 
 |         printf("addu.qh overflow error\n"); | 
 |         return -1; | 
 |     } | 
 |  | 
 |     return 0; | 
 | } |