blob: 74620aa2a5ee17b5c4991826f5f71bbea18f9e7d (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
|
/* $OpenBSD: fpsetsticky.c,v 1.5 2011/04/22 14:44:08 martynas 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);
}
|
