188d2dd24SPeter Grehan /* $NetBSD: fpsetmask.c,v 1.3 2002/01/13 21:45:48 thorpej Exp $ */
288d2dd24SPeter Grehan
3d915a14eSPedro F. Giffuni /*-
4*b61a5730SWarner Losh * SPDX-License-Identifier: BSD-2-Clause
5d915a14eSPedro F. Giffuni *
688d2dd24SPeter Grehan * Copyright (c) 1999 The NetBSD Foundation, Inc.
788d2dd24SPeter Grehan * All rights reserved.
888d2dd24SPeter Grehan *
988d2dd24SPeter Grehan * This code is derived from software contributed to The NetBSD Foundation
1088d2dd24SPeter Grehan * by Dan Winship.
1188d2dd24SPeter Grehan *
1288d2dd24SPeter Grehan * Redistribution and use in source and binary forms, with or without
1388d2dd24SPeter Grehan * modification, are permitted provided that the following conditions
1488d2dd24SPeter Grehan * are met:
1588d2dd24SPeter Grehan * 1. Redistributions of source code must retain the above copyright
1688d2dd24SPeter Grehan * notice, this list of conditions and the following disclaimer.
1788d2dd24SPeter Grehan * 2. Redistributions in binary form must reproduce the above copyright
1888d2dd24SPeter Grehan * notice, this list of conditions and the following disclaimer in the
1988d2dd24SPeter Grehan * documentation and/or other materials provided with the distribution.
2088d2dd24SPeter Grehan *
2188d2dd24SPeter Grehan * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
2288d2dd24SPeter Grehan * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
2388d2dd24SPeter Grehan * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
2488d2dd24SPeter Grehan * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
2588d2dd24SPeter Grehan * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
2688d2dd24SPeter Grehan * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
2788d2dd24SPeter Grehan * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
2888d2dd24SPeter Grehan * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
2988d2dd24SPeter Grehan * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
3088d2dd24SPeter Grehan * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
3188d2dd24SPeter Grehan * POSSIBILITY OF SUCH DAMAGE.
3288d2dd24SPeter Grehan *
3388d2dd24SPeter Grehan */
3488d2dd24SPeter Grehan
3588d2dd24SPeter Grehan #include <sys/types.h>
3688d2dd24SPeter Grehan #include <ieeefp.h>
3788d2dd24SPeter Grehan
3856ae1bedSRafal Jaworowski #ifndef _SOFT_FLOAT
3988d2dd24SPeter Grehan fp_except_t
fpsetmask(fp_except_t mask)4088d2dd24SPeter Grehan fpsetmask(fp_except_t mask)
4188d2dd24SPeter Grehan {
4288d2dd24SPeter Grehan u_int64_t fpscr;
43384ee7ccSBrandon Bergren fp_except_t old;
4488d2dd24SPeter Grehan
4588d2dd24SPeter Grehan __asm__("mffs %0" : "=f"(fpscr));
46384ee7ccSBrandon Bergren old = (fp_except_t)((fpscr >> 3) & 0x1f);
47384ee7ccSBrandon Bergren fpscr = (fpscr & 0xffffff07) | ((mask & 0x1f) << 3);
4888d2dd24SPeter Grehan __asm__ __volatile("mtfsf 0xff,%0" :: "f"(fpscr));
4988d2dd24SPeter Grehan return (old);
5088d2dd24SPeter Grehan }
5156ae1bedSRafal Jaworowski #endif
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