1*93b86b2fSAndrew Turner /*- 2*93b86b2fSAndrew Turner * Copyright (c) 2015 The FreeBSD Foundation 3*93b86b2fSAndrew Turner * All rights reserved. 4*93b86b2fSAndrew Turner * 5*93b86b2fSAndrew Turner * This software was developed by Andrew Turner under 6*93b86b2fSAndrew Turner * sponsorship from the FreeBSD Foundation. 7*93b86b2fSAndrew Turner * 8*93b86b2fSAndrew Turner * Redistribution and use in source and binary forms, with or without 9*93b86b2fSAndrew Turner * modification, are permitted provided that the following conditions 10*93b86b2fSAndrew Turner * are met: 11*93b86b2fSAndrew Turner * 1. Redistributions of source code must retain the above copyright 12*93b86b2fSAndrew Turner * notice, this list of conditions and the following disclaimer. 13*93b86b2fSAndrew Turner * 2. Redistributions in binary form must reproduce the above copyright 14*93b86b2fSAndrew Turner * notice, this list of conditions and the following disclaimer in the 15*93b86b2fSAndrew Turner * documentation and/or other materials provided with the distribution. 16*93b86b2fSAndrew Turner * 17*93b86b2fSAndrew Turner * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18*93b86b2fSAndrew Turner * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19*93b86b2fSAndrew Turner * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20*93b86b2fSAndrew Turner * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21*93b86b2fSAndrew Turner * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22*93b86b2fSAndrew Turner * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23*93b86b2fSAndrew Turner * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24*93b86b2fSAndrew Turner * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25*93b86b2fSAndrew Turner * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26*93b86b2fSAndrew Turner * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27*93b86b2fSAndrew Turner * SUCH DAMAGE. 28*93b86b2fSAndrew Turner */ 29*93b86b2fSAndrew Turner 30*93b86b2fSAndrew Turner #include <sys/cdefs.h> 31*93b86b2fSAndrew Turner __FBSDID("$FreeBSD$"); 32*93b86b2fSAndrew Turner 33*93b86b2fSAndrew Turner #include <sys/types.h> 34*93b86b2fSAndrew Turner #include <ieeefp.h> 35*93b86b2fSAndrew Turner 36*93b86b2fSAndrew Turner #define FP_X_MASK (FP_X_INV | FP_X_DZ | FP_X_OFL | FP_X_UFL | FP_X_IMP) 37*93b86b2fSAndrew Turner 38*93b86b2fSAndrew Turner fp_except_t 39*93b86b2fSAndrew Turner fpgetmask(void) 40*93b86b2fSAndrew Turner { 41*93b86b2fSAndrew Turner uint64_t mask; 42*93b86b2fSAndrew Turner 43*93b86b2fSAndrew Turner /* Read the current mask */ 44*93b86b2fSAndrew Turner __asm __volatile("mrs %0, fpcr" : "=&r"(mask)); 45*93b86b2fSAndrew Turner 46*93b86b2fSAndrew Turner return (mask & FP_X_MASK); 47*93b86b2fSAndrew Turner } 48