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/* $OpenBSD: fpsetsticky.c,v 1.6 2014/04/18 15:09:52 guenther Exp $ */
/*
* Written by Miodrag Vallat. Public domain
*/
#include <sys/types.h>
#include <ieeefp.h>
fp_except
fpsetsticky(mask)
fp_except mask;
{
u_int64_t fpsr;
fp_except old;
__asm__ volatile("fstd %%fr0,0(%1)" : "=m" (fpsr) : "r" (&fpsr));
old = (fpsr >> 59) & 0x1f;
fpsr = (fpsr & 0x07ffffff00000000LL) | ((u_int64_t)(mask & 0x1f) << 59);
__asm__ volatile("fldd 0(%0),%%fr0" : : "r" (&fpsr));
return (old);
}
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