87 lines
1.7 KiB
C
87 lines
1.7 KiB
C
#include<stdio.h>
|
|
#include<assert.h>
|
|
|
|
int main()
|
|
{
|
|
int rt, ach, acl, dsp;
|
|
int result;
|
|
|
|
ach = 0x05;
|
|
acl = 0xB4CB;
|
|
result = 0x00007FFF;
|
|
__asm
|
|
("mthi %2, $ac1\n\t"
|
|
"mtlo %3, $ac1\n\t"
|
|
"extr_s.h %0, $ac1, 0x03\n\t"
|
|
"rddsp %1\n\t"
|
|
: "=r"(rt), "=r"(dsp)
|
|
: "r"(ach), "r"(acl)
|
|
);
|
|
dsp = (dsp >> 23) & 0x01;
|
|
assert(dsp == 1);
|
|
assert(result == rt);
|
|
|
|
ach = 0xffffffff;
|
|
acl = 0x12344321;
|
|
result = 0xFFFF8000;
|
|
__asm
|
|
("mthi %2, $ac1\n\t"
|
|
"mtlo %3, $ac1\n\t"
|
|
"extr_s.h %0, $ac1, 0x08\n\t"
|
|
"rddsp %1\n\t"
|
|
: "=r"(rt), "=r"(dsp)
|
|
: "r"(ach), "r"(acl)
|
|
);
|
|
dsp = (dsp >> 23) & 0x01;
|
|
assert(dsp == 1);
|
|
assert(result == rt);
|
|
|
|
/* Clear dsp */
|
|
dsp = 0;
|
|
__asm
|
|
("wrdsp %0\n\t"
|
|
:
|
|
: "r"(dsp)
|
|
);
|
|
|
|
ach = 0x00;
|
|
acl = 0x4321;
|
|
result = 0x432;
|
|
__asm
|
|
("mthi %2, $ac1\n\t"
|
|
"mtlo %3, $ac1\n\t"
|
|
"extr_s.h %0, $ac1, 0x04\n\t"
|
|
"rddsp %1\n\t"
|
|
: "=r"(rt), "=r"(dsp)
|
|
: "r"(ach), "r"(acl)
|
|
);
|
|
dsp = (dsp >> 23) & 0x01;
|
|
assert(dsp == 0);
|
|
assert(result == rt);
|
|
|
|
/* Clear dsp */
|
|
dsp = 0;
|
|
__asm
|
|
("wrdsp %0\n\t"
|
|
:
|
|
: "r"(dsp)
|
|
);
|
|
|
|
ach = 0x123;
|
|
acl = 0x87654321;
|
|
result = 0x1238;
|
|
__asm
|
|
("mthi %2, $ac1\n\t"
|
|
"mtlo %3, $ac1\n\t"
|
|
"extr_s.h %0, $ac1, 28\n\t"
|
|
"rddsp %1\n\t"
|
|
: "=r"(rt), "=r"(dsp)
|
|
: "r"(ach), "r"(acl)
|
|
);
|
|
dsp = (dsp >> 23) & 0x01;
|
|
assert(dsp == 0);
|
|
assert(result == rt);
|
|
|
|
return 0;
|
|
}
|