xref: /minix3/lib/libc/arch/m68k/hardfloat/fpgetround.c (revision 84d9c625bfea59e274550651111ae9edfdc40fbd)
1*84d9c625SLionel Sambuc /*-
2*84d9c625SLionel Sambuc  * Copyright (c) 2013 The NetBSD Foundation, Inc.
3*84d9c625SLionel Sambuc  * All rights reserved.
4*84d9c625SLionel Sambuc  *
5*84d9c625SLionel Sambuc  * This code is derived from software contributed to The NetBSD Foundation
6*84d9c625SLionel Sambuc  * by Matt Thomas of 3am Software Foundry.
7*84d9c625SLionel Sambuc  *
8*84d9c625SLionel Sambuc  * Redistribution and use in source and binary forms, with or without
9*84d9c625SLionel Sambuc  * modification, are permitted provided that the following conditions
10*84d9c625SLionel Sambuc  * are met:
11*84d9c625SLionel Sambuc  * 1. Redistributions of source code must retain the above copyright
12*84d9c625SLionel Sambuc  *    notice, this list of conditions and the following disclaimer.
13*84d9c625SLionel Sambuc  * 2. Redistributions in binary form must reproduce the above copyright
14*84d9c625SLionel Sambuc  *    notice, this list of conditions and the following disclaimer in the
15*84d9c625SLionel Sambuc  *    documentation and/or other materials provided with the distribution.
16*84d9c625SLionel Sambuc  *
17*84d9c625SLionel Sambuc  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
18*84d9c625SLionel Sambuc  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
19*84d9c625SLionel Sambuc  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
20*84d9c625SLionel Sambuc  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
21*84d9c625SLionel Sambuc  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
22*84d9c625SLionel Sambuc  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23*84d9c625SLionel Sambuc  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24*84d9c625SLionel Sambuc  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
25*84d9c625SLionel Sambuc  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
26*84d9c625SLionel Sambuc  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
27*84d9c625SLionel Sambuc  * POSSIBILITY OF SUCH DAMAGE.
28*84d9c625SLionel Sambuc  */
29*84d9c625SLionel Sambuc 
30*84d9c625SLionel Sambuc #include "namespace.h"
31*84d9c625SLionel Sambuc 
32*84d9c625SLionel Sambuc #include <ieeefp.h>
33*84d9c625SLionel Sambuc #include <m68k/fpreg.h>
34*84d9c625SLionel Sambuc 
35*84d9c625SLionel Sambuc #ifdef __weak_alias
__weak_alias(fpgetround,_fpgetround)36*84d9c625SLionel Sambuc __weak_alias(fpgetround,_fpgetround)
37*84d9c625SLionel Sambuc #endif
38*84d9c625SLionel Sambuc 
39*84d9c625SLionel Sambuc fp_rnd
40*84d9c625SLionel Sambuc _fpgetround(void)
41*84d9c625SLionel Sambuc {
42*84d9c625SLionel Sambuc 	int fpcr;
43*84d9c625SLionel Sambuc 
44*84d9c625SLionel Sambuc 	__asm("fmovel %%fpcr,%0" : "=d"(fpcr));
45*84d9c625SLionel Sambuc 
46*84d9c625SLionel Sambuc 	return __SHIFTOUT(fpcr, FPCR_ROUND);
47*84d9c625SLionel Sambuc }
48