mirror of https://gitee.com/openkylin/qemu.git
52 lines
963 B
C
52 lines
963 B
C
#include "io.h"
|
|
|
|
int main(void)
|
|
{
|
|
long long rt, ac, ach, acl, dsp;
|
|
long long result;
|
|
|
|
ach = 0x05;
|
|
acl = 0xB4CB;
|
|
dsp = 0x07;
|
|
ac = 0x03;
|
|
result = 0x000C;
|
|
|
|
__asm
|
|
("wrdsp %1, 0x01\n\t"
|
|
"mthi %2, $ac1\n\t"
|
|
"mtlo %3, $ac1\n\t"
|
|
"extpv %0, $ac1, %4\n\t"
|
|
"rddsp %1\n\t"
|
|
: "=r"(rt), "+r"(dsp)
|
|
: "r"(ach), "r"(acl), "r"(ac)
|
|
);
|
|
dsp = (dsp >> 14) & 0x01;
|
|
if ((dsp != 0) || (result != rt)) {
|
|
printf("extpv wrong\n");
|
|
|
|
return -1;
|
|
}
|
|
|
|
ach = 0x05;
|
|
acl = 0xB4CB;
|
|
dsp = 0x01;
|
|
|
|
__asm
|
|
("wrdsp %1, 0x01\n\t"
|
|
"mthi %2, $ac1\n\t"
|
|
"mtlo %3, $ac1\n\t"
|
|
"extpv %0, $ac1, %4\n\t"
|
|
"rddsp %1\n\t"
|
|
: "=r"(rt), "+r"(dsp)
|
|
: "r"(ach), "r"(acl), "r"(ac)
|
|
);
|
|
dsp = (dsp >> 14) & 0x01;
|
|
if (dsp != 1) {
|
|
printf("extpv wrong\n");
|
|
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|