GNU C Library master sources branch master updated. glibc-2.24-388-gc73c7fc

[cmetcalf at sourceware dot org]

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http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=c73c7fc07c001f2a907a9c6d50c57d377ce0351f

commit c73c7fc07c001f2a907a9c6d50c57d377ce0351f
Author: Chris Metcalf <cmetcalf@mellanox.com>
Date:   Wed Nov 16 10:09:50 2016 -0500

    tile: create new math-tests.h header
    
    The header makes tile use the new mechanisms for suppressing
    exception and rounding support (the ROUNDING_TESTS_xxx() and
    EXCEPTION_TESTS_xxx macros).
    
    More importantly, it also now sets SNAN_TESTS_PRESERVE_PAYLOAD to 0,
    since the tilegx fp hardware does not preserve NaN payloads.

diff --git a/ChangeLog b/ChangeLog
index c09246e..4c90aa0 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,7 @@
 2016-11-18  Chris Metcalf  <cmetcalf@mellanox.com>
 
+	* sysdeps/tile/math-tests.h: New file.
+
 	* sysdeps/unix/sysv/linux/tile/set_dataplane.c
 	(__old_set_dataplane): Rename from set_dataplane and make a
 	compatibility symbol.
diff --git a/sysdeps/tile/math-tests.h b/sysdeps/tile/math-tests.h
new file mode 100644
index 0000000..c0a7753
--- /dev/null
+++ b/sysdeps/tile/math-tests.h
@@ -0,0 +1,30 @@
+/* Configuration for math tests.  Tile version.
+   Copyright (C) 2013-2016 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/>.  */
+
+/* Tile hardware/softfloat does not support exceptions and rounding modes.  */
+#define ROUNDING_TESTS_float(MODE)	((MODE) == FE_TONEAREST)
+#define ROUNDING_TESTS_double(MODE)	((MODE) == FE_TONEAREST)
+#define ROUNDING_TESTS_long_double(MODE)	((MODE) == FE_TONEAREST)
+#define EXCEPTION_TESTS_float	0
+#define EXCEPTION_TESTS_double	0
+#define EXCEPTION_TESTS_long_double	0
+
+/* Tile hardware/softfloat floating-point ops do not preserve NaN payloads.  */
+#define SNAN_TESTS_PRESERVE_PAYLOAD	0
+
+#include_next <math-tests.h>

http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=6933f28a64090760a1c1a731d89714265497ba83

commit 6933f28a64090760a1c1a731d89714265497ba83
Author: Chris Metcalf <cmetcalf@mellanox.com>
Date:   Mon Nov 14 11:41:38 2016 -0500

    Make tile's set_dataplane API compatibility-only
    
    The set_dataplane() API in <sys/dataplane.h> originally supported the
    Tilera version of Linux as shipped to our customers.  Once we started
    upstreaming the dataplane support in the kernel, the API changed
    to use fcntl() as part of the current task-isolation patch series.
    
    It doesn't seem like continuing to support the old API is useful
    for newly-compiled code, and even supporting the old glibc binary
    API on an upstream kernel that supports the new task isolation mode
    isn't straightforward, since the semantics have changed in ways that
    make it hard to map the old semantics precisely to the new ones,
    so just return ENOSYS.

diff --git a/ChangeLog b/ChangeLog
index 2232d45..c09246e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,12 @@
+2016-11-18  Chris Metcalf  <cmetcalf@mellanox.com>
+
+	* sysdeps/unix/sysv/linux/tile/set_dataplane.c
+	(__old_set_dataplane): Rename from set_dataplane and make a
+	compatibility symbol.
+	* sysdeps/unix/sysv/linux/tile/sys/dataplane.h: Remove file.
+	* sysdeps/unix/sysv/linux/tile/Makefile (sysdep_headers): Remove
+	sys/dataplane.h.
+
 2016-11-18  Joseph Myers  <joseph@codesourcery.com>
 
 	* scripts/build-many-glibcs.py (Context.write_files): Make wrapper
diff --git a/sysdeps/unix/sysv/linux/tile/Makefile b/sysdeps/unix/sysv/linux/tile/Makefile
index 43acea3..04605a6 100644
--- a/sysdeps/unix/sysv/linux/tile/Makefile
+++ b/sysdeps/unix/sysv/linux/tile/Makefile
@@ -8,8 +8,7 @@ sysdep_headers += sys/reg.h
 sysdep_headers += sys/cachectl.h
 sysdep_routines += cacheflush
 
-# Control dataplane properties of current thread.
-sysdep_headers += sys/dataplane.h
+# Control dataplane properties of current thread (compatibility only).
 sysdep_routines += set_dataplane
 
 endif
diff --git a/sysdeps/unix/sysv/linux/tile/set_dataplane.c b/sysdeps/unix/sysv/linux/tile/set_dataplane.c
index 5a4bffe..552716b 100644
--- a/sysdeps/unix/sysv/linux/tile/set_dataplane.c
+++ b/sysdeps/unix/sysv/linux/tile/set_dataplane.c
@@ -19,13 +19,13 @@
 #include <errno.h>
 #include <stddef.h>
 #include <unistd.h>
-#ifdef __NR_set_dataplane
-#include <sys/dataplane.h>
-#endif
+#include <shlib-compat.h>
 
-/* Request dataplane modes from the kernel. */
+/* Request dataplane modes from the kernel (compatibility only). */
+#if SHLIB_COMPAT (libc, GLIBC_2_12, GLIBC_2_25)
 int
-set_dataplane (int flags)
+attribute_compat_text_section
+__old_set_dataplane (int flags)
 {
 #ifdef __NR_set_dataplane
   return INLINE_SYSCALL (set_dataplane, 1, flags);
@@ -34,3 +34,6 @@ set_dataplane (int flags)
   return -1;
 #endif
 }
+
+compat_symbol (libc, __old_set_dataplane, set_dataplane, GLIBC_2_12);
+#endif
diff --git a/sysdeps/unix/sysv/linux/tile/sys/dataplane.h b/sysdeps/unix/sysv/linux/tile/sys/dataplane.h
deleted file mode 100644
index 82677f1..0000000
--- a/sysdeps/unix/sysv/linux/tile/sys/dataplane.h
+++ /dev/null
@@ -1,33 +0,0 @@
-/* Copyright (C) 2011-2016 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
-
-   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 _SYS_DATAPLANE_H
-#define _SYS_DATAPLANE_H 1
-
-#include <features.h>
-
-/* Get the kernel definition for the flag bits.  */
-#include <asm/dataplane.h>
-
-__BEGIN_DECLS
-
-extern int set_dataplane (int flags);
-
-__END_DECLS
-
-#endif /* sys/dataplane.h */

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

Summary of changes:
 ChangeLog                                    |   11 ++++++++
 sysdeps/{nios2 => tile}/math-tests.h         |   10 ++++---
 sysdeps/unix/sysv/linux/tile/Makefile        |    3 +-
 sysdeps/unix/sysv/linux/tile/set_dataplane.c |   13 ++++++----
 sysdeps/unix/sysv/linux/tile/sys/dataplane.h |   33 --------------------------
 5 files changed, 26 insertions(+), 44 deletions(-)
 copy sysdeps/{nios2 => tile}/math-tests.h (77%)
 delete mode 100644 sysdeps/unix/sysv/linux/tile/sys/dataplane.h


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