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#include<stdio.h>
#include<assert.h>
int main()
{
int rs, rt, dsp;
int ach = 5, acl = 5;
int resulth, resultl, resultdsp;
rs = 0xBC0123AD;
rt = 0x01643721;
resulth = 0x00000005;
resultl = 0x1CE5E09B;
resultdsp = 0x00;
__asm
("mthi %0, $ac1\n\t"
"mtlo %1, $ac1\n\t"
"dpsqx_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 = 0x99F13005;
acl = 0x51730062;
rs = 0x80008000;
rt = 0x80008000;
resulth = 0x99F13004;
resultl = 0x51730064;
resultdsp = 0x01;
__asm
("mthi %0, $ac1\n\t"
"mtlo %1, $ac1\n\t"
"dpsqx_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;
}
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