|  | #include "io.h" | 
|  |  | 
|  | int main(void) | 
|  | { | 
|  | long long rt, dsp; | 
|  | long long achi, acli; | 
|  | long long res, resdsp; | 
|  |  | 
|  | achi = 0x87654321; | 
|  | acli = 0x12345678; | 
|  |  | 
|  | res = 0x8000000000000000; | 
|  | resdsp = 0x1; | 
|  |  | 
|  | __asm | 
|  | ("mthi %2, $ac1\n\t" | 
|  | "mtlo %3, $ac1\n\t" | 
|  | "dextr_rs.l %0, $ac1, 0x8\n\t" | 
|  | "rddsp %1\n\t" | 
|  | : "=r"(rt), "=r"(dsp) | 
|  | : "r"(achi), "r"(acli) | 
|  | ); | 
|  | dsp = (dsp >> 23) & 0x1; | 
|  |  | 
|  | if ((dsp != resdsp) || (rt != res)) { | 
|  | printf("dextr_rs.l error\n"); | 
|  | return -1; | 
|  | } | 
|  |  | 
|  | achi = 0x00; | 
|  | acli = 0x12345678; | 
|  |  | 
|  | res = 0x12345678; | 
|  | resdsp = 0x1; | 
|  |  | 
|  | __asm | 
|  | ("mthi %2, $ac1\n\t" | 
|  | "mtlo %3, $ac1\n\t" | 
|  | "dextr_rs.l %0, $ac1, 0x0\n\t" | 
|  | "rddsp %1\n\t" | 
|  | : "=r"(rt), "=r"(dsp) | 
|  | : "r"(achi), "r"(acli) | 
|  | ); | 
|  | dsp = (dsp >> 23) & 0x1; | 
|  |  | 
|  | if ((dsp != resdsp) || (rt != res)) { | 
|  | printf("dextr_rs.l error\n"); | 
|  | return -1; | 
|  | } | 
|  |  | 
|  | return 0; | 
|  | } |