1/*-
2 * Copyright (c) 2020 Axiado
3 * All rights reserved.
4 *
5 * This software was developed by Kristof Provost under
6 * sponsorship from Axiado.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30#include <sys/cdefs.h>
31__FBSDID("$FreeBSD$");
32
33#include <sys/types.h>
34#include <ieeefp.h>
35
36/**
37 * RISC-V doesn't support floating-point exceptions: RISC-V Instruction Set
38 * Manual: Volume I: User-Level ISA, 11.2 Floating-Point Control and Status
39 * Register: "As allowed by the standard, we do not support traps on
40 * floating-point exceptions in the base ISA, but instead require explicit
41 * checks of the flags in software. We considered adding branches controlled
42 * directly by the contents of the floating-point accrued exception flags, but
43 * ultimately chose to omit these instructions to keep the ISA simple."
44 *
45 * We still need this function, because some applications (notably Perl) call
46 * it, but we cannot provide a meaningful implementation.
47 **/
48fp_except_t
49fpsetmask(fp_except_t mask)
50{
51
52	return (0);
53}
54