| #include<stdio.h> |
| #include<assert.h> |
| |
| int main() |
| { |
| int rt, rs, ach, acl, dsp; |
| int result; |
| |
| rs = 0x03; |
| ach = 0x05; |
| acl = 0xB4CB; |
| result = 0x7FFFFFFF; |
| __asm |
| ("wrdsp %1, 0x01\n\t" |
| "mthi %3, $ac1\n\t" |
| "mtlo %4, $ac1\n\t" |
| "extrv_rs.w %0, $ac1, %2\n\t" |
| "rddsp %1\n\t" |
| : "=r"(rt), "+r"(dsp) |
| : "r"(rs), "r"(ach), "r"(acl) |
| ); |
| dsp = (dsp >> 23) & 0x01; |
| assert(dsp == 1); |
| assert(result == rt); |
| |
| /* Clear dspcontrol */ |
| dsp = 0; |
| __asm |
| ("wrdsp %0\n\t" |
| : |
| : "r"(dsp) |
| ); |
| |
| rs = 0x04; |
| ach = 0x01; |
| acl = 0xB4CB; |
| result = 0x10000B4D; |
| __asm |
| ("wrdsp %1, 0x01\n\t" |
| "mthi %3, $ac1\n\t" |
| "mtlo %4, $ac1\n\t" |
| "extrv_rs.w %0, $ac1, %2\n\t" |
| "rddsp %1\n\t" |
| : "=r"(rt), "+r"(dsp) |
| : "r"(rs), "r"(ach), "r"(acl) |
| ); |
| dsp = (dsp >> 23) & 0x01; |
| assert(dsp == 0); |
| assert(result == rt); |
| |
| /* Clear dspcontrol */ |
| dsp = 0; |
| __asm |
| ("wrdsp %0\n\t" |
| : |
| : "r"(dsp) |
| ); |
| |
| rs = 0x1F; |
| ach = 0x3fffffff; |
| acl = 0x2bcdef01; |
| result = 0x7ffffffe; |
| __asm |
| ("wrdsp %1, 0x01\n\t" |
| "mthi %3, $ac1\n\t" |
| "mtlo %4, $ac1\n\t" |
| "extrv_rs.w %0, $ac1, %2\n\t" |
| "rddsp %1\n\t" |
| : "=r"(rt), "+r"(dsp) |
| : "r"(rs), "r"(ach), "r"(acl) |
| ); |
| dsp = (dsp >> 23) & 0x01; |
| assert(dsp == 0); |
| assert(result == rt); |
| |
| return 0; |
| } |