1*dc9b124dSJustin Hibbits /* $NetBSD: fpgetsticky.c,v 1.3 2002/01/13 21:45:48 thorpej Exp $ */
2*dc9b124dSJustin Hibbits
3*dc9b124dSJustin Hibbits /*
4*dc9b124dSJustin Hibbits * Copyright (c) 2016 Justin Hibbits
5*dc9b124dSJustin Hibbits * All rights reserved.
6*dc9b124dSJustin Hibbits *
7*dc9b124dSJustin Hibbits * This code is derived from software contributed to The NetBSD Foundation
8*dc9b124dSJustin Hibbits * by Dan Winship.
9*dc9b124dSJustin Hibbits *
10*dc9b124dSJustin Hibbits * Redistribution and use in source and binary forms, with or without
11*dc9b124dSJustin Hibbits * modification, are permitted provided that the following conditions
12*dc9b124dSJustin Hibbits * are met:
13*dc9b124dSJustin Hibbits * 1. Redistributions of source code must retain the above copyright
14*dc9b124dSJustin Hibbits * notice, this list of conditions and the following disclaimer.
15*dc9b124dSJustin Hibbits * 2. Redistributions in binary form must reproduce the above copyright
16*dc9b124dSJustin Hibbits * notice, this list of conditions and the following disclaimer in the
17*dc9b124dSJustin Hibbits * documentation and/or other materials provided with the distribution.
18*dc9b124dSJustin Hibbits *
19*dc9b124dSJustin Hibbits * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20*dc9b124dSJustin Hibbits * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21*dc9b124dSJustin Hibbits * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22*dc9b124dSJustin Hibbits * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23*dc9b124dSJustin Hibbits * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24*dc9b124dSJustin Hibbits * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25*dc9b124dSJustin Hibbits * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26*dc9b124dSJustin Hibbits * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27*dc9b124dSJustin Hibbits * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28*dc9b124dSJustin Hibbits * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29*dc9b124dSJustin Hibbits * POSSIBILITY OF SUCH DAMAGE.
30*dc9b124dSJustin Hibbits */
31*dc9b124dSJustin Hibbits
32*dc9b124dSJustin Hibbits
33*dc9b124dSJustin Hibbits #include "namespace.h"
34*dc9b124dSJustin Hibbits
35*dc9b124dSJustin Hibbits #include <sys/types.h>
36*dc9b124dSJustin Hibbits #include <machine/spr.h>
37*dc9b124dSJustin Hibbits #include <ieeefp.h>
38*dc9b124dSJustin Hibbits
39*dc9b124dSJustin Hibbits #ifndef _SOFT_FLOAT
40*dc9b124dSJustin Hibbits fp_except_t
fpgetsticky()41*dc9b124dSJustin Hibbits fpgetsticky()
42*dc9b124dSJustin Hibbits {
43*dc9b124dSJustin Hibbits uint32_t fpscr;
44*dc9b124dSJustin Hibbits
45*dc9b124dSJustin Hibbits __asm__ __volatile("mfspr %0, %1" : "=r"(fpscr) : "K"(SPR_SPEFSCR));
46*dc9b124dSJustin Hibbits return ((fp_except_t)((fpscr >> 25) & 0x1f));
47*dc9b124dSJustin Hibbits }
48*dc9b124dSJustin Hibbits #endif
49