qemu/tests/tcg/mips/mips64-dsp/subu_qb.c

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#include "io.h"
int main(void)
{
long long rd, rs, rt, dsp;
long long result, resultdsp;
rs = 0x12345678;
rt = 0x87654321;
result = 0xFFFFFFFF8BCF1357;
resultdsp = 0x01;
__asm
("subu.qb %0, %2, %3\n\t"
"rddsp %1\n\t"
: "=r"(rd), "=r"(dsp)
: "r"(rs), "r"(rt)
);
dsp = (dsp >> 20) & 0x01;
if ((dsp != resultdsp) || (rd != result)) {
printf("subu.qb wrong\n");
return -1;
}
return 0;
}