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Implement fpgetmask, it's needed by Python.

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Approved by:	ABT Systems Ltd
Sponsored by:	The FreeBSD Foundation
This commit is contained in:
Andrew Turner 2015-06-25 08:22:25 +00:00
parent bbe1d59571
commit 93b86b2fb0
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=284807
3 changed files with 49 additions and 0 deletions
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1
lib/libc/aarch64/Symbol.map
View File

@ -15,6 +15,7 @@ FBSD_1.0 {
_longjmp;
fabs;
__flt_rounds;
fpgetmask;
fpsetmask;
setjmp;
longjmp;

1
lib/libc/aarch64/gen/Makefile.inc
View File

@ -2,6 +2,7 @@
SRCS+= fabs.S \
flt_rounds.c \
fpgetmask.c \
fpsetmask.c \
ldexp.c \
_setjmp.S \

47
lib/libc/aarch64/gen/fpgetmask.c Normal file
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@ -0,0 +1,47 @@
/*-
* Copyright (c) 2015 The FreeBSD Foundation
* All rights reserved.
*
* This software was developed by Andrew Turner under
* sponsorship from the FreeBSD Foundation.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/types.h>
#include <ieeefp.h>
#define FP_X_MASK (FP_X_INV | FP_X_DZ | FP_X_OFL | FP_X_UFL | FP_X_IMP)
fp_except_t
fpgetmask(void)
{
uint64_t mask;
/* Read the current mask */
__asm __volatile("mrs %0, fpcr" : "=&r"(mask));
return (mask & FP_X_MASK);
}