Date: Wed, 24 Jun 2015 16:18:58 +0000 (UTC) From: Andrew Turner <andrew@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r284769 - in head/lib/libc/aarch64: . gen Message-ID: <201506241618.t5OGIwg1035087@svn.freebsd.org>
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Author: andrew Date: Wed Jun 24 16:18:58 2015 New Revision: 284769 URL: https://svnweb.freebsd.org/changeset/base/284769 Log: Implement fpsetmask. Some third-party software makes use of it, for example perl. Obtained from: ABT Systems Ltd Sponsored by: The FreeBSD Foundation Added: head/lib/libc/aarch64/gen/fpsetmask.c (contents, props changed) Modified: head/lib/libc/aarch64/Symbol.map head/lib/libc/aarch64/gen/Makefile.inc Modified: head/lib/libc/aarch64/Symbol.map ============================================================================== --- head/lib/libc/aarch64/Symbol.map Wed Jun 24 16:15:32 2015 (r284768) +++ head/lib/libc/aarch64/Symbol.map Wed Jun 24 16:18:58 2015 (r284769) @@ -14,6 +14,7 @@ FBSD_1.0 { _setjmp; _longjmp; fabs; + fpsetmask; setjmp; longjmp; sigsetjmp; Modified: head/lib/libc/aarch64/gen/Makefile.inc ============================================================================== --- head/lib/libc/aarch64/gen/Makefile.inc Wed Jun 24 16:15:32 2015 (r284768) +++ head/lib/libc/aarch64/gen/Makefile.inc Wed Jun 24 16:18:58 2015 (r284769) @@ -2,6 +2,7 @@ SRCS+= fabs.S \ flt_rounds.c \ + fpsetmask.c \ ldexp.c \ _setjmp.S \ _set_tp.c \ Added: head/lib/libc/aarch64/gen/fpsetmask.c ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ head/lib/libc/aarch64/gen/fpsetmask.c Wed Jun 24 16:18:58 2015 (r284769) @@ -0,0 +1,52 @@ +/*- + * 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 +fpsetmask(fp_except_t mask) +{ + uint64_t old, new; + + mask &= FP_X_MASK; + + /* Read the current mask */ + __asm __volatile("mrs %0, fpcr" : "=&r"(old)); + new = old & ~FP_X_MASK; + new |= mask; + __asm __volatile("msr fpcr, %0" :: "r"(new)); + + return ((fp_except_t)old); +}
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