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#include "io.h"
int main(void)
{
long long rt, dsp;
long long achi, acli;
long long res, resdsp;
achi = 0x87654321;
acli = 0x12345678;
res = 0xffffffffffff8000;
resdsp = 0x1;
__asm
("mthi %2, $ac1\n\t"
"mtlo %3, $ac1\n\t"
"dextr_s.h %0, $ac1, 0x8\n\t"
"rddsp %1\n\t"
: "=r"(rt), "=r"(dsp)
: "r"(achi), "r"(acli)
);
dsp = (dsp >> 23) & 0x1;
if ((dsp != resdsp) || (rt != res)) {
printf("1 dextr_s.h error\n");
return -1;
}
achi = 0x77654321;
acli = 0x12345678;
res = 0x7fff;
resdsp = 0x1;
__asm
("mthi %2, $ac1\n\t"
"mtlo %3, $ac1\n\t"
"dextr_s.h %0, $ac1, 0x8\n\t"
"rddsp %1\n\t"
: "=r"(rt), "=r"(dsp)
: "r"(achi), "r"(acli)
);
dsp = (dsp >> 23) & 0x1;
if ((dsp != resdsp) || (rt != res)) {
printf("2 dextr_s.h error\n");
return -1;
}
achi = 0x00;
acli = 0x78;
res = 0x7;
resdsp = 0x1;
__asm
("mthi %2, $ac1\n\t"
"mtlo %3, $ac1\n\t"
"dextr_s.h %0, $ac1, 0x4\n\t"
"rddsp %1\n\t"
: "=r"(rt), "=r"(dsp)
: "r"(achi), "r"(acli)
);
dsp = (dsp >> 23) & 0x1;
if ((dsp != resdsp) || (rt != res)) {
printf("3 dextr_s.h error\n");
return -1;
}
return 0;
}
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