1#include<stdio.h> 2#include<assert.h> 3 4int main() 5{ 6 int rs, rt, dsp; 7 int ach = 5, acl = 5; 8 int resulth, resultl, resultdsp; 9 10 rs = 0xBC0123AD; 11 rt = 0x01643721; 12 resulth = 0x00; 13 resultl = 0x7FFFFFFF; 14 resultdsp = 0x01; 15 __asm 16 ("mthi %0, $ac1\n\t" 17 "mtlo %1, $ac1\n\t" 18 "dpsqx_sa.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 ach = 0x8c0b354A; 31 acl = 0xbbc02249; 32 rs = 0x800023AD; 33 rt = 0x01648000; 34 resulth = 0xffffffff; 35 resultl = 0x80000000; 36 resultdsp = 0x01; 37 __asm 38 ("mthi %0, $ac1\n\t" 39 "mtlo %1, $ac1\n\t" 40 "dpsqx_sa.w.ph $ac1, %3, %4\n\t" 41 "mfhi %0, $ac1\n\t" 42 "mflo %1, $ac1\n\t" 43 "rddsp %2\n\t" 44 : "+r"(ach), "+r"(acl), "=r"(dsp) 45 : "r"(rs), "r"(rt) 46 ); 47 dsp = (dsp >> 17) & 0x01; 48 assert(dsp == resultdsp); 49 assert(ach == resulth); 50 assert(acl == resultl); 51 52 return 0; 53} 54