[PATCH 3/6] Split sparc out of main Linux kernel-features.h.

This patch splits sparc out of the main Linux kernel-features.h.

Not tested.

	* sysdeps/unix/sysv/linux/sparc/kernel-features.h: New file.
	* sysdeps/unix/sysv/linux/kernel-features.h [__sparc__]
	(__ASSUME_SOCKETCALL): Do not define.
	(__ASSUME_SET_ROBUST_LIST): Define unconditionally.
	(__ASSUME_FUTEX_LOCK_PI): Likewise.
	[__sparc__] (__ASSUME_ACCEPT4_SYSCALL): Do not define.
	[__sparc__] (__ASSUME_ACCEPT4_SYSCALL_WITH_SOCKETCALL): Likewise.
	(__ASSUME_REQUEUE_PI): Define unconditionally.
	[__LINUX_KERNEL_VERSION >= 0x020621 && __sparc__]
	(__ASSUME_RECVMMSG_SYSCALL): Do not define.
	[__sparc__] (__ASSUME_RECVMMSG_SYSCALL_WITH_SOCKETCALL): Likewise.
	[__LINUX_KERNEL_VERSION >= 0x030000 && __sparc__]
	(__ASSUME_SENDMMSG_SYSCALL): Likewise.
	[__sparc__] (__ASSUME_SENDMMSG_SYSCALL_WITH_SOCKETCALL): Likewise.

3 files changed, 72 insertions, 27 deletions

diff --git a/ChangeLog b/ChangeLog
index e36df97643..bd589fd9fc 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,20 @@
 2014-07-17  Joseph Myers  <joseph@codesourcery.com>
 
+	* sysdeps/unix/sysv/linux/sparc/kernel-features.h: New file.
+	* sysdeps/unix/sysv/linux/kernel-features.h [__sparc__]
+	(__ASSUME_SOCKETCALL): Do not define.
+	(__ASSUME_SET_ROBUST_LIST): Define unconditionally.
+	(__ASSUME_FUTEX_LOCK_PI): Likewise.
+	[__sparc__] (__ASSUME_ACCEPT4_SYSCALL): Do not define.
+	[__sparc__] (__ASSUME_ACCEPT4_SYSCALL_WITH_SOCKETCALL): Likewise.
+	(__ASSUME_REQUEUE_PI): Define unconditionally.
+	[__LINUX_KERNEL_VERSION >= 0x020621 && __sparc__]
+	(__ASSUME_RECVMMSG_SYSCALL): Do not define.
+	[__sparc__] (__ASSUME_RECVMMSG_SYSCALL_WITH_SOCKETCALL): Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x030000 && __sparc__]
+	(__ASSUME_SENDMMSG_SYSCALL): Likewise.
+	[__sparc__] (__ASSUME_SENDMMSG_SYSCALL_WITH_SOCKETCALL): Likewise.
+
 	* sysdeps/unix/sysv/linux/i386/kernel-features.h: New file.
 	* sysdeps/unix/sysv/linux/kernel-features.h [__i386__]
 	(__ASSUME_SOCKETCALL): Do not define.
diff --git a/sysdeps/unix/sysv/linux/kernel-features.h b/sysdeps/unix/sysv/linux/kernel-features.h
index 5995fa0172..0294c9b06f 100644
--- a/sysdeps/unix/sysv/linux/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/kernel-features.h
@@ -46,8 +46,7 @@
    architectures.  */
 #if defined __powerpc__ \
     || defined __s390__ \
-    || defined __sh__ \
-    || defined __sparc__
+    || defined __sh__
 # define __ASSUME_SOCKETCALL		1
 #endif
 
@@ -89,15 +88,11 @@
 /* Support for inter-process robust mutexes was added in 2.6.17 (but
    some architectures lack futex_atomic_cmpxchg_inatomic in some
    configurations).  */
-#if !(defined __sparc__ && !defined __arch64__ && !defined __sparc_v9__)
-# define __ASSUME_SET_ROBUST_LIST	1
-#endif
+#define __ASSUME_SET_ROBUST_LIST	1
 
 /* Support for PI futexes was added in 2.6.18 (but some architectures
    lack futex_atomic_cmpxchg_inatomic in some configurations).  */
-#if !(defined __sparc__ && !defined __arch64__ && !defined __sparc_v9__)
-# define __ASSUME_FUTEX_LOCK_PI	1
-#endif
+#define __ASSUME_FUTEX_LOCK_PI	1
 
 /* Support for private futexes was added in 2.6.22.  */
 #define __ASSUME_PRIVATE_FUTEX	1
@@ -136,14 +131,10 @@
 
 /* The accept4 syscall was added for x86_64 and SPARC in 2.6.28, and
    for PowerPC and SH in 2.6.37.  */
-#if defined __sparc__					\
-    || (__LINUX_KERNEL_VERSION >= 0x020625		\
-	&& (defined __powerpc__ || defined __sh__))
+#if (__LINUX_KERNEL_VERSION >= 0x020625			\
+     && (defined __powerpc__ || defined __sh__))
 # define __ASSUME_ACCEPT4_SYSCALL	1
 #endif
-#ifdef __sparc__
-# define __ASSUME_ACCEPT4_SYSCALL_WITH_SOCKETCALL	1
-#endif
 
 #if defined __ASSUME_ACCEPT4_SOCKETCALL || defined __ASSUME_ACCEPT4_SYSCALL
 # define __ASSUME_ACCEPT4	1
@@ -159,9 +150,7 @@
 /* Support for FUTEX_*_REQUEUE_PI was added in 2.6.31 (but some
    architectures lack futex_atomic_cmpxchg_inatomic in some
    configurations).  */
-#if !(defined __sparc__ && !defined __arch64__ && !defined __sparc_v9__)
-# define __ASSUME_REQUEUE_PI	1
-#endif
+#define __ASSUME_REQUEUE_PI	1
 
 /* Support for recvmmsg functionality was added in 2.6.33.  The macros
    defined correspond to those for accept4.  */
@@ -171,15 +160,10 @@
 
 /* The recvmmsg syscall was added for i386, x86_64 and SPARC in
    2.6.33, and for PowerPC and SH in 2.6.37.  */
-#if (__LINUX_KERNEL_VERSION >= 0x020621			\
-     && defined __sparc__)				\
-    || (__LINUX_KERNEL_VERSION >= 0x020625		\
-	&& (defined __powerpc__ || defined __sh__))
+#if (__LINUX_KERNEL_VERSION >= 0x020625			\
+     && (defined __powerpc__ || defined __sh__))
 # define __ASSUME_RECVMMSG_SYSCALL	1
 #endif
-#ifdef __sparc__
-# define __ASSUME_RECVMMSG_SYSCALL_WITH_SOCKETCALL	1
-#endif
 
 #if defined __ASSUME_RECVMMSG_SOCKETCALL || defined __ASSUME_RECVMMSG_SYSCALL
 # define __ASSUME_RECVMMSG	1
@@ -210,11 +194,10 @@
 /* The sendmmsg syscall was added for i386, x86_64, PowerPC, SH and
    SPARC in 3.0.  */
 #if __LINUX_KERNEL_VERSION >= 0x030000		\
-    && (defined __powerpc__			\
-	|| defined __sh__ || defined __sparc__)
+    && (defined __powerpc__ || defined __sh__)
 # define __ASSUME_SENDMMSG_SYSCALL	1
 #endif
-#if defined __powerpc__ || defined __sh__ || defined __sparc__
+#if defined __powerpc__ || defined __sh__
 # define __ASSUME_SENDMMSG_SYSCALL_WITH_SOCKETCALL	1
 #endif
 
diff --git a/sysdeps/unix/sysv/linux/sparc/kernel-features.h b/sysdeps/unix/sysv/linux/sparc/kernel-features.h
new file mode 100644
index 0000000000..1754d36e03
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/sparc/kernel-features.h
@@ -0,0 +1,47 @@
+/* Set flags signalling availability of kernel features based on given
+   kernel version number.  SPARC version.
+   Copyright (C) 1999-2014 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/>.  */
+
+/* SPARC uses socketcall.  */
+#define __ASSUME_SOCKETCALL		1
+
+/* The accept4 syscall was added for SPARC in 2.6.28.  */
+#define __ASSUME_ACCEPT4_SYSCALL	1
+#define __ASSUME_ACCEPT4_SYSCALL_WITH_SOCKETCALL	1
+
+/* The recvmmsg syscall was added for SPARC in 2.6.33.  */
+#if __LINUX_KERNEL_VERSION >= 0x020621
+# define __ASSUME_RECVMMSG_SYSCALL	1
+#endif
+#define __ASSUME_RECVMMSG_SYSCALL_WITH_SOCKETCALL	1
+
+/* The sendmmsg syscall was added for SPARC in 3.0.  */
+#if __LINUX_KERNEL_VERSION >= 0x030000
+# define __ASSUME_SENDMMSG_SYSCALL	1
+#endif
+#define __ASSUME_SENDMMSG_SYSCALL_WITH_SOCKETCALL	1
+
+#include_next <kernel-features.h>
+
+/* 32-bit SPARC kernels do not support
+   futex_atomic_cmpxchg_inatomic.  */
+#if !defined __arch64__ && !defined __sparc_v9__
+# undef __ASSUME_FUTEX_LOCK_PI
+# undef __ASSUME_REQUEUE_PI
+# undef __ASSUME_SET_ROBUST_LIST
+#endif