1*93b86b2fSAndrew Turner /*-
2*93b86b2fSAndrew Turner * Copyright (c) 2015 The FreeBSD Foundation
3*93b86b2fSAndrew Turner *
4*93b86b2fSAndrew Turner * This software was developed by Andrew Turner under
5*93b86b2fSAndrew Turner * sponsorship from the FreeBSD Foundation.
6*93b86b2fSAndrew Turner *
7*93b86b2fSAndrew Turner * Redistribution and use in source and binary forms, with or without
8*93b86b2fSAndrew Turner * modification, are permitted provided that the following conditions
9*93b86b2fSAndrew Turner * are met:
10*93b86b2fSAndrew Turner * 1. Redistributions of source code must retain the above copyright
11*93b86b2fSAndrew Turner * notice, this list of conditions and the following disclaimer.
12*93b86b2fSAndrew Turner * 2. Redistributions in binary form must reproduce the above copyright
13*93b86b2fSAndrew Turner * notice, this list of conditions and the following disclaimer in the
14*93b86b2fSAndrew Turner * documentation and/or other materials provided with the distribution.
15*93b86b2fSAndrew Turner *
16*93b86b2fSAndrew Turner * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17*93b86b2fSAndrew Turner * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18*93b86b2fSAndrew Turner * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19*93b86b2fSAndrew Turner * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20*93b86b2fSAndrew Turner * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21*93b86b2fSAndrew Turner * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22*93b86b2fSAndrew Turner * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23*93b86b2fSAndrew Turner * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24*93b86b2fSAndrew Turner * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25*93b86b2fSAndrew Turner * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26*93b86b2fSAndrew Turner * SUCH DAMAGE.
27*93b86b2fSAndrew Turner */
28*93b86b2fSAndrew Turner
29*93b86b2fSAndrew Turner #include <sys/types.h>
30*93b86b2fSAndrew Turner #include <ieeefp.h>
31*93b86b2fSAndrew Turner
32*93b86b2fSAndrew Turner #define FP_X_MASK (FP_X_INV | FP_X_DZ | FP_X_OFL | FP_X_UFL | FP_X_IMP)
33*93b86b2fSAndrew Turner
34*93b86b2fSAndrew Turner fp_except_t
fpgetmask(void)35*93b86b2fSAndrew Turner fpgetmask(void)
36*93b86b2fSAndrew Turner {
37*93b86b2fSAndrew Turner uint64_t mask;
38*93b86b2fSAndrew Turner
39*93b86b2fSAndrew Turner /* Read the current mask */
40*93b86b2fSAndrew Turner __asm __volatile("mrs %0, fpcr" : "=&r"(mask));
41*93b86b2fSAndrew Turner
42*93b86b2fSAndrew Turner return (mask & FP_X_MASK);
43*93b86b2fSAndrew Turner }
44