| 1 | #include<stdio.h> |
| 2 | #include<assert.h> |
| 3 | |
| 4 | int main() |
| 5 | { |
| 6 | int rt, ac, ach, acl, dsp; |
| 7 | int result; |
| 8 | |
| 9 | ach = 0x05; |
| 10 | acl = 0xB4CB; |
| 11 | dsp = 0x07; |
| 12 | ac = 0x03; |
| 13 | result = 0x000C; |
| 14 | |
| 15 | __asm |
| 16 | ("wrdsp %1, 0x01\n\t" |
| 17 | "mthi %2, $ac1\n\t" |
| 18 | "mtlo %3, $ac1\n\t" |
| 19 | "extpv %0, $ac1, %4\n\t" |
| 20 | "rddsp %1\n\t" |
| 21 | : "=r"(rt), "+r"(dsp) |
| 22 | : "r"(ach), "r"(acl), "r"(ac) |
| 23 | ); |
| 24 | dsp = (dsp >> 14) & 0x01; |
| 25 | assert(dsp == 0); |
| 26 | assert(result == rt); |
| 27 | |
| 28 | ach = 0x05; |
| 29 | acl = 0xB4CB; |
| 30 | dsp = 0x01; |
| 31 | |
| 32 | __asm |
| 33 | ("wrdsp %1, 0x01\n\t" |
| 34 | "mthi %2, $ac1\n\t" |
| 35 | "mtlo %3, $ac1\n\t" |
| 36 | "extpv %0, $ac1, %4\n\t" |
| 37 | "rddsp %1\n\t" |
| 38 | : "=r"(rt), "+r"(dsp) |
| 39 | : "r"(ach), "r"(acl), "r"(ac) |
| 40 | ); |
| 41 | dsp = (dsp >> 14) & 0x01; |
| 42 | assert(dsp == 1); |
| 43 | |
| 44 | return 0; |
| 45 | } |