[src/trunk]: src Add fenv for ia64, imported from FreeBSD, compile tested only.

[scole <scole%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/cd3183fb8068
branches:  trunk
changeset: 351699:cd3183fb8068
user:      scole <scole%NetBSD.org@localhost>
date:      Thu Feb 23 02:05:30 2017 +0000

description:
Add fenv for ia64, imported from FreeBSD, compile tested only.

diffstat:

 include/fenv.h            |   3 +-
 lib/libm/Makefile         |   5 ++-
 lib/libm/arch/ia64/fenv.c |  69 +++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 75 insertions(+), 2 deletions(-)

diffs (109 lines):

diff -r ee32e6cc6ea1 -r cd3183fb8068 include/fenv.h
--- a/include/fenv.h    Thu Feb 23 02:03:27 2017 +0000
+++ b/include/fenv.h    Thu Feb 23 02:05:30 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: fenv.h,v 1.23 2016/08/25 12:12:59 christos Exp $       */
+/*     $NetBSD: fenv.h,v 1.24 2017/02/23 02:06:12 scole Exp $  */
 /*
  * Copyright (c) 2010 The NetBSD Foundation, Inc.
  * All rights reserved.
@@ -30,6 +30,7 @@
 #include <sys/featuretest.h>
 
 #if !defined(__aarch64__) && !defined(__arm__) && !defined(__i386__) \
+    && !defined(__ia64__) \
     && !defined(__hppa__) && !defined(__powerpc__) && !defined(__mips__) \
     && !defined(__or1k__) && !defined(__riscv__) && !defined(__sparc__) \
     && !defined(__x86_64__) && !defined(__alpha__) && !defined(__sh__) \
diff -r ee32e6cc6ea1 -r cd3183fb8068 lib/libm/Makefile
--- a/lib/libm/Makefile Thu Feb 23 02:03:27 2017 +0000
+++ b/lib/libm/Makefile Thu Feb 23 02:05:30 2017 +0000
@@ -1,4 +1,4 @@
-#  $NetBSD: Makefile,v 1.187 2016/12/08 18:42:01 christos Exp $
+#  $NetBSD: Makefile,v 1.188 2017/02/23 02:05:30 scole Exp $
 #
 #  @(#)Makefile 5.1beta 93/09/24
 #
@@ -77,6 +77,9 @@
 .PATH.S: ${.CURDIR}/arch/arm
 ARCH_SRCS = e_sqrt.S e_sqrtf.S lrint.S lrintf.S s_fabsf.S s_fma.S s_fmaf.S
 .endif
+.elif (${LIBC_MACHINE_ARCH} == "ia64")
+.PATH: ${.CURDIR}/arch/ia64
+COMMON_SRCS += fenv.c
 .elif (${LIBC_MACHINE_ARCH} == "hppa")
 .PATH.c: ${.CURDIR}/arch/hppa
 COMMON_SRCS+= fenv.c s_nexttowardf.c \
diff -r ee32e6cc6ea1 -r cd3183fb8068 lib/libm/arch/ia64/fenv.c
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/lib/libm/arch/ia64/fenv.c Thu Feb 23 02:05:30 2017 +0000
@@ -0,0 +1,69 @@
+/*     $NetBSD: fenv.c,v 1.1 2017/02/23 02:05:30 scole Exp $   */
+
+/*-
+ * Copyright (c) 2004 David Schultz <das%FreeBSD.ORG@localhost>
+ * All rights reserved.
+ *
+ * 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.
+ *
+ * $FreeBSD: releng/10.1/lib/msun/ia64/fenv.c 226415 2011-10-16 05:37:56Z das $
+ */
+
+#include <sys/cdefs.h>
+__RCSID("$NetBSD: fenv.c,v 1.1 2017/02/23 02:05:30 scole Exp $");
+
+#define        __fenv_static
+#include "fenv.h"
+
+#if defined(__GNUC_GNU_INLINE__) && !defined(__lint__)
+#error "This file must be compiled with C99 'inline' semantics"
+#endif
+
+const fenv_t __fe_dfl_env = 0x0009804c8a70033fULL;
+
+extern inline int feclearexcept(int __excepts);
+extern inline int fegetexceptflag(fexcept_t *__flagp, int __excepts);
+extern inline int fesetexceptflag(const fexcept_t *__flagp, int __excepts);
+extern inline int feraiseexcept(int __excepts);
+extern inline int fetestexcept(int __excepts);
+extern inline int fegetround(void);
+extern inline int fesetround(int __round);
+extern inline int fegetenv(fenv_t *__envp);
+extern inline int feholdexcept(fenv_t *__envp);
+extern inline int fesetenv(const fenv_t *__envp);
+
+/*
+ * It doesn't pay to inline feupdateenv() because it includes one of
+ * the rare uses of feraiseexcept() where the argument is not a
+ * constant.  Thus, no dead code elimination can occur, resulting in
+ * significant bloat.
+ */
+int
+feupdateenv(const fenv_t *envp)
+{
+       fenv_t fpsr;
+
+       __stfpsr(&fpsr);
+       __ldfpsr(*envp);
+       feraiseexcept((fpsr >> _FPUSW_SHIFT) & FE_ALL_EXCEPT);
+       return (0);
+}