GNU C Library master sources branch master updated. glibc-2.16-ports-merge-330-g361818d

[rth at sourceware dot org]

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- Log -----------------------------------------------------------------
http://sources.redhat.com/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=361818d50219bd9be2c41954a702b748f2240099

commit 361818d50219bd9be2c41954a702b748f2240099
Author: Richard Henderson <rth@twiddle.net>
Date:   Thu Sep 13 07:35:26 2012 -0700

    alpha: Add get-rounding-mode.h

diff --git a/ports/ChangeLog.alpha b/ports/ChangeLog.alpha
index 9589dd3..fbe42ac 100644
--- a/ports/ChangeLog.alpha
+++ b/ports/ChangeLog.alpha
@@ -1,3 +1,7 @@
+2012-12-13  Richard Henderson  <rth@redhat.com>
+
+	* sysdeps/alpha/fpu/get-rounding-mode.h: New file.
+
 2012-08-30  Richard Henderson  <rth@redhat.com>
 
 	* sysdeps/alpha/fpu/s_isnan.c: Define all aliases in terms of
diff --git a/ports/sysdeps/alpha/fpu/get-rounding-mode.h b/ports/sysdeps/alpha/fpu/get-rounding-mode.h
new file mode 100644
index 0000000..9d5b724
--- /dev/null
+++ b/ports/sysdeps/alpha/fpu/get-rounding-mode.h
@@ -0,0 +1,35 @@
+/* Determine floating-point rounding mode within libc.  Alpha version.
+   Copyright (C) 2012 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef ALPHA_GET_ROUNDING_MODE_H
+#define ALPHA_GET_ROUNDING_MODE_H	1
+
+#include <fenv.h>
+#include <fenv_libc.h>
+
+/* Return the floating-point rounding mode.  */
+
+static inline int
+get_rounding_mode (void)
+{
+  unsigned long fpcr;
+  __asm__ __volatile__("excb; mf_fpcr %0" : "=f"(fpcr));
+  return (fpcr >> FPCR_ROUND_SHIFT) & 3;
+}
+
+#endif /* get-rounding-mode.h */

http://sources.redhat.com/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=b2d36dda9b8ca4d850f3b8e3e437a38368a51519

commit b2d36dda9b8ca4d850f3b8e3e437a38368a51519
Author: Richard Henderson <rth@twiddle.net>
Date:   Thu Aug 30 12:02:50 2012 -0700

    alpha: Work around gcc 4.8 aliasing difference/bug

diff --git a/ports/ChangeLog.alpha b/ports/ChangeLog.alpha
index 19edf6f..9589dd3 100644
--- a/ports/ChangeLog.alpha
+++ b/ports/ChangeLog.alpha
@@ -1,3 +1,8 @@
+2012-08-30  Richard Henderson  <rth@redhat.com>
+
+	* sysdeps/alpha/fpu/s_isnan.c: Define all aliases in terms of
+	the original __isnan symbol.
+
 2012-08-27  Mike Frysinger  <vapier@gentoo.org>
 
 	[BZ #5400]
diff --git a/ports/sysdeps/alpha/fpu/s_isnan.c b/ports/sysdeps/alpha/fpu/s_isnan.c
index b18c7bb..1f239ac 100644
--- a/ports/sysdeps/alpha/fpu/s_isnan.c
+++ b/ports/sysdeps/alpha/fpu/s_isnan.c
@@ -28,11 +28,6 @@
 #undef isnanf
 #undef __GI___isnanf
 
-/* The hidden_proto in include/math.h was obscured by the macro hackery.  */
-__typeof (__isnan) __isnanf;
-hidden_proto (__isnanf)
-
-
 int
 __isnan (double x)
 {
@@ -45,8 +40,11 @@ weak_alias (__isnan, isnan)
 /* It turns out that the 'double' version will also always work for
    single-precision.  */
 strong_alias (__isnan, __isnanf)
-hidden_def (__isnanf)
-weak_alias (__isnanf, isnanf)
+weak_alias (__isnan, isnanf)
+
+/* ??? GCC 4.8 fails to look through chains of aliases with asm names
+   attached.  Work around this for now.  */
+hidden_ver (__isnan, __isnanf)
 
 #ifdef NO_LONG_DOUBLE
 strong_alias (__isnan, __isnanl)

-----------------------------------------------------------------------

Summary of changes:
 ports/ChangeLog.alpha                              |    9 +++++++++
 .../sysdeps/alpha}/fpu/get-rounding-mode.h         |   14 ++++++--------
 ports/sysdeps/alpha/fpu/s_isnan.c                  |   12 +++++-------
 3 files changed, 20 insertions(+), 15 deletions(-)
 copy {sysdeps/s390 => ports/sysdeps/alpha}/fpu/get-rounding-mode.h (79%)


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