1*073d9f2cSAleksandar Markovic #include<stdio.h>
2*073d9f2cSAleksandar Markovic #include<assert.h>
3*073d9f2cSAleksandar Markovic
main()4*073d9f2cSAleksandar Markovic int main()
5*073d9f2cSAleksandar Markovic {
6*073d9f2cSAleksandar Markovic int rd, rs, rt, dsp;
7*073d9f2cSAleksandar Markovic int result, resultdsp;
8*073d9f2cSAleksandar Markovic
9*073d9f2cSAleksandar Markovic rs = 0x12345678;
10*073d9f2cSAleksandar Markovic rt = 0x87654321;
11*073d9f2cSAleksandar Markovic result = 0x7FFF1357;
12*073d9f2cSAleksandar Markovic resultdsp = 0x01;
13*073d9f2cSAleksandar Markovic
14*073d9f2cSAleksandar Markovic __asm
15*073d9f2cSAleksandar Markovic ("wrdsp $0\n\t"
16*073d9f2cSAleksandar Markovic "subq_s.ph %0, %2, %3\n\t"
17*073d9f2cSAleksandar Markovic "rddsp %1\n\t"
18*073d9f2cSAleksandar Markovic : "=r"(rd), "=r"(dsp)
19*073d9f2cSAleksandar Markovic : "r"(rs), "r"(rt)
20*073d9f2cSAleksandar Markovic );
21*073d9f2cSAleksandar Markovic dsp = (dsp >> 20) & 0x01;
22*073d9f2cSAleksandar Markovic assert(dsp == resultdsp);
23*073d9f2cSAleksandar Markovic assert(rd == result);
24*073d9f2cSAleksandar Markovic
25*073d9f2cSAleksandar Markovic rs = 0x12348000;
26*073d9f2cSAleksandar Markovic rt = 0x87657000;
27*073d9f2cSAleksandar Markovic result = 0x7FFF8000;
28*073d9f2cSAleksandar Markovic resultdsp = 0x01;
29*073d9f2cSAleksandar Markovic
30*073d9f2cSAleksandar Markovic __asm
31*073d9f2cSAleksandar Markovic ("wrdsp $0\n\t"
32*073d9f2cSAleksandar Markovic "subq_s.ph %0, %2, %3\n\t"
33*073d9f2cSAleksandar Markovic "rddsp %1\n\t"
34*073d9f2cSAleksandar Markovic : "=r"(rd), "=r"(dsp)
35*073d9f2cSAleksandar Markovic : "r"(rs), "r"(rt)
36*073d9f2cSAleksandar Markovic );
37*073d9f2cSAleksandar Markovic dsp = (dsp >> 20) & 0x01;
38*073d9f2cSAleksandar Markovic assert(dsp == resultdsp);
39*073d9f2cSAleksandar Markovic assert(rd == result);
40*073d9f2cSAleksandar Markovic
41*073d9f2cSAleksandar Markovic rs = 0x12340000;
42*073d9f2cSAleksandar Markovic rt = 0x87658000;
43*073d9f2cSAleksandar Markovic result = 0x7FFF7FFF;
44*073d9f2cSAleksandar Markovic resultdsp = 0x01;
45*073d9f2cSAleksandar Markovic
46*073d9f2cSAleksandar Markovic __asm
47*073d9f2cSAleksandar Markovic ("wrdsp $0\n\t"
48*073d9f2cSAleksandar Markovic "subq_s.ph %0, %2, %3\n\t"
49*073d9f2cSAleksandar Markovic "rddsp %1\n\t"
50*073d9f2cSAleksandar Markovic : "=r"(rd), "=r"(dsp)
51*073d9f2cSAleksandar Markovic : "r"(rs), "r"(rt)
52*073d9f2cSAleksandar Markovic );
53*073d9f2cSAleksandar Markovic dsp = (dsp >> 20) & 0x01;
54*073d9f2cSAleksandar Markovic assert(dsp == resultdsp);
55*073d9f2cSAleksandar Markovic assert(rd == result);
56*073d9f2cSAleksandar Markovic
57*073d9f2cSAleksandar Markovic return 0;
58*073d9f2cSAleksandar Markovic }
59