| #include<stdio.h> |
| #include<assert.h> |
| |
| int main() |
| { |
| int rs, rt, dsp; |
| int ach = 5, acl = 5; |
| int resulth, resultl, resultdsp; |
| |
| rs = 0x800000FF; |
| rt = 0x00018000; |
| resulth = 0x05; |
| resultl = 0x80000202; |
| resultdsp = 0x01; |
| __asm |
| ("mthi %0, $ac1\n\t" |
| "mtlo %1, $ac1\n\t" |
| "dpaqx_s.w.ph $ac1, %3, %4\n\t" |
| "mfhi %0, $ac1\n\t" |
| "mflo %1, $ac1\n\t" |
| "rddsp %2\n\t" |
| : "+r"(ach), "+r"(acl), "=r"(dsp) |
| : "r"(rs), "r"(rt) |
| ); |
| dsp = (dsp >> 17) & 0x01; |
| assert(dsp == resultdsp); |
| assert(ach == resulth); |
| assert(acl == resultl); |
| |
| ach = 5; |
| acl = 5; |
| rs = 0x00FF00FF; |
| rt = 0x00010002; |
| resulth = 0x05; |
| resultl = 0x05FF; |
| /*********************************************************** |
| * Because of we set outflag at last time, although this |
| * time we set nothing, but it is stay the last time value. |
| **********************************************************/ |
| resultdsp = 0x01; |
| __asm |
| ("mthi %0, $ac1\n\t" |
| "mtlo %1, $ac1\n\t" |
| "dpaqx_s.w.ph $ac1, %3, %4\n\t" |
| "mfhi %0, $ac1\n\t" |
| "mflo %1, $ac1\n\t" |
| "rddsp %2\n\t" |
| : "+r"(ach), "+r"(acl), "=r"(dsp) |
| : "r"(rs), "r"(rt) |
| ); |
| dsp = (dsp >> 17) & 0x01; |
| assert(dsp == resultdsp); |
| assert(ach == resulth); |
| assert(acl == resultl); |
| |
| ach = 5; |
| acl = 5; |
| rs = 0x800000FF; |
| rt = 0x00028000; |
| resulth = 0x05; |
| resultl = 0x80000400; |
| resultdsp = 0x01; |
| __asm |
| ("mthi %0, $ac1\n\t" |
| "mtlo %1, $ac1\n\t" |
| "dpaqx_s.w.ph $ac1, %3, %4\n\t" |
| "mfhi %0, $ac1\n\t" |
| "mflo %1, $ac1\n\t" |
| "rddsp %2\n\t" |
| : "+r"(ach), "+r"(acl), "=r"(dsp) |
| : "r"(rs), "r"(rt) |
| ); |
| dsp = (dsp >> 17) & 0x01; |
| assert(dsp == resultdsp); |
| assert(ach == resulth); |
| assert(acl == resultl); |
| |
| return 0; |
| } |