Make __ASSUME_UTIMES hppa-specific.

This patch makes __ASSUME_UTIMES hppa-specific, removing mentions of
the macro from architecture-independent code and code for other
architectures.  (All other architectures either have the utimes
syscall in all relevant kernel versions, or use the asm-generic
interface so only have utimensat and won't get the utimes syscall.)  A
similar approach is used to that used for futimesat for MicroBlaze: if
the kernel is recent enough that the utimes syscall can be assumed to
be present, use the implementation in terms of the utimes syscall, and
otherwise use the linux/generic implementation in terms of utimensat.

Tested x86_64 that the disassembly of installed shared libraries is
unchanged by the patch.  Not tested for hppa.

	* sysdeps/unix/sysv/linux/kernel-features.h (__ASSUME_UTIMES): Do
	not define.
	* sysdeps/unix/sysv/linux/utimes.c: Do not include
	<kernel-features.h>.
	(__utimes) [__NR_utimes]: Make code unconditional.
	(__utimes) [!__ASSUME_UTIMES]: Remove conditional code.
	* sysdeps/unix/sysv/linux/aarch64/kernel-features.h
	(__ASSUME_UTIMES): Do not undefine.
	* sysdeps/unix/sysv/linux/tile/kernel-features.h
	(__ASSUME_UTIMES): Likewise.
	* sysdeps/unix/sysv/linux/hppa/kernel-features.h
	(__ASSUME_UTIMES): Define for [__LINUX_KERNEL_VERSION >= 0x030e00]
	instead of undefining for [__LINUX_KERNEL_VERSION < 0x030e00].
	* sysdeps/unix/sysv/linux/hppa/utimes.c: New file.

2 files changed, 35 insertions, 5 deletions

diff --git a/sysdeps/unix/sysv/linux/hppa/kernel-features.h b/sysdeps/unix/sysv/linux/hppa/kernel-features.h
index 25c3e36600..cf0c57486f 100644
--- a/sysdeps/unix/sysv/linux/hppa/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/hppa/kernel-features.h
@@ -32,9 +32,9 @@
 # define __ASSUME_SENDMMSG_SYSCALL	1
 #endif
 
-#include_next <kernel-features.h>
-
-/* hppa did not get the utimes syscall until 3.14.  */
-#if __LINUX_KERNEL_VERSION < 0x030e00
-# undef __ASSUME_UTIMES
+/* Support for the utimes syscall was added in 3.14.  */
+#if __LINUX_KERNEL_VERSION >= 0x030e00
+# define __ASSUME_UTIMES		1
 #endif
+
+#include_next <kernel-features.h>
diff --git a/sysdeps/unix/sysv/linux/hppa/utimes.c b/sysdeps/unix/sysv/linux/hppa/utimes.c
new file mode 100644
index 0000000000..f62dd0520d
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/hppa/utimes.c
@@ -0,0 +1,30 @@
+/* Implement utimes for hppa.
+   Copyright (C) 2014 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/>.  */
+
+/* hppa has the utimensat syscall in all supported kernel versions but
+   gained the utimes syscall later, so use the linux-generic
+   implementation of utimes in terms of the utimensat syscall unless
+   the utimes syscall is known to be available.  */
+
+#include <kernel-features.h>
+
+#ifdef __ASSUME_UTIMES
+# include <sysdeps/unix/sysv/linux/utimes.c>
+#else
+# include <sysdeps/unix/sysv/linux/generic/utimes.c>
+#endif