1 /* $NetBSD: fpgetsticky.c,v 1.3 2002/01/13 21:45:48 thorpej Exp $ */
2
3 /*
4 * Copyright (c) 2016 Justin Hibbits
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Dan Winship.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 *
31 * $FreeBSD: stable/12/lib/libc/powerpcspe/gen/fpgetsticky.c 307761 2016-10-22 01:57:15Z jhibbits $
32 */
33
34 #include <sys/cdefs.h>
35
36 #include "namespace.h"
37
38 #include <sys/types.h>
39 #include <machine/spr.h>
40 #include <ieeefp.h>
41
42 #ifndef _SOFT_FLOAT
43 #ifdef __weak_alias
__weak_alias(fpgetsticky,_fpgetsticky)44 __weak_alias(fpgetsticky,_fpgetsticky)
45 #endif
46
47 fp_except_t
48 fpgetsticky()
49 {
50 uint32_t fpscr;
51
52 __asm__ __volatile("mfspr %0, %1" : "=r"(fpscr) : "K"(SPR_SPEFSCR));
53 return ((fp_except_t)((fpscr >> 25) & 0x1f));
54 }
55 #endif
56