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#include "u.h"
#include "../port/lib.h"
#include "mem.h"
#include "dat.h"
#include "fns.h"
#include "ureg.h"
#include "io.h"
#include "../port/error.h"
char *fpcause[] =
{
"invalid operation",
"division by zero",
"overflow",
"underflow",
"inexact operation",
"integer overflow",
};
char *fpexcname(Ureg*, ulong, char*);
void
fptrap(Ureg *ur)
{
char buf[ERRMAX];
int i;
ulong reason;
ur->pc &= ~2;
reason = (ulong)ur->a0;
for (i = 1; i < 6; i++)
if (reason & (1<<i)) {
sprint(buf, "fp: %s", fpcause[i-1]);
goto found;
}
sprint(buf, "fp: code 0x%lux", reason);
found:
fataltrap(ur, buf);
}
char*
fpexcname(Ureg *ur, ulong fcr31, char *buf)
{
USED(ur, fcr31, buf);
return buf;
}
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