[PATCH 4/6] Split powerpc out of main Linux kernel-features.h.

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

Not tested.

	* sysdeps/unix/sysv/linux/powerpc/kernel-features.h: New file.
	* sysdeps/unix/sysv/linux/kernel-features.h [__powerpc__]
	(__ASSUME_SOCKETCALL): Do not define.
	(__ASSUME_IPC64): Define unconditionally.
	[__LINUX_KERNEL_VERSION >= 0x020625 && __powerpc__]
	(__ASSUME_ACCEPT4_SYSCALL): Do not define.
	[__LINUX_KERNEL_VERSION >= 0x020625 && __powerpc__]
	(__ASSUME_RECVMMSG_SYSCALL): Likewise.
	[__LINUX_KERNEL_VERSION >= 0x030000 && __powerpc__]
	(__ASSUME_SENDMMSG_SYSCALL): Likewise.
	[__powerpc__] (__ASSUME_SENDMMSG_SYSCALL_WITH_SOCKETCALL):
	Likewise.

3 files changed, 61 insertions, 13 deletions

diff --git a/ChangeLog b/ChangeLog
index bd589fd9fc..4175eba5fa 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,18 @@
 2014-07-17  Joseph Myers  <joseph@codesourcery.com>
 
+	* sysdeps/unix/sysv/linux/powerpc/kernel-features.h: New file.
+	* sysdeps/unix/sysv/linux/kernel-features.h [__powerpc__]
+	(__ASSUME_SOCKETCALL): Do not define.
+	(__ASSUME_IPC64): Define unconditionally.
+	[__LINUX_KERNEL_VERSION >= 0x020625 && __powerpc__]
+	(__ASSUME_ACCEPT4_SYSCALL): Do not define.
+	[__LINUX_KERNEL_VERSION >= 0x020625 && __powerpc__]
+	(__ASSUME_RECVMMSG_SYSCALL): Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x030000 && __powerpc__]
+	(__ASSUME_SENDMMSG_SYSCALL): Likewise.
+	[__powerpc__] (__ASSUME_SENDMMSG_SYSCALL_WITH_SOCKETCALL):
+	Likewise.
+
 	* sysdeps/unix/sysv/linux/sparc/kernel-features.h: New file.
 	* sysdeps/unix/sysv/linux/kernel-features.h [__sparc__]
 	(__ASSUME_SOCKETCALL): Do not define.
diff --git a/sysdeps/unix/sysv/linux/kernel-features.h b/sysdeps/unix/sysv/linux/kernel-features.h
index 0294c9b06f..7fdf55aa6f 100644
--- a/sysdeps/unix/sysv/linux/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/kernel-features.h
@@ -44,18 +44,14 @@
    socket-related operations, via a socket.S file in glibc, instead of
    separate syscalls.  __ASSUME_SOCKETCALL is defined for such
    architectures.  */
-#if defined __powerpc__ \
-    || defined __s390__ \
-    || defined __sh__
+#if defined __s390__ || defined __sh__
 # define __ASSUME_SOCKETCALL		1
 #endif
 
 /* Linux 2.3.39 introduced IPC64.  Except for powerpc.  Linux 2.4.0 on
    PPC introduced a correct IPC64.  But PowerPC64 does not support a
    separate 64-bit syscall, already 64-bit.  */
-#ifndef __powerpc64__
-# define __ASSUME_IPC64		1
-#endif
+#define __ASSUME_IPC64		1
 
 /* The changed st_ino field appeared in 2.4.0-test6.  However, SH is lame,
    and still does not have a 64-bit inode field.  */
@@ -131,8 +127,7 @@
 
 /* The accept4 syscall was added for x86_64 and SPARC in 2.6.28, and
    for PowerPC and SH in 2.6.37.  */
-#if (__LINUX_KERNEL_VERSION >= 0x020625			\
-     && (defined __powerpc__ || defined __sh__))
+#if __LINUX_KERNEL_VERSION >= 0x020625 && defined __sh__
 # define __ASSUME_ACCEPT4_SYSCALL	1
 #endif
 
@@ -160,8 +155,7 @@
 
 /* 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 >= 0x020625			\
-     && (defined __powerpc__ || defined __sh__))
+#if __LINUX_KERNEL_VERSION >= 0x020625 && defined __sh__
 # define __ASSUME_RECVMMSG_SYSCALL	1
 #endif
 
@@ -193,11 +187,10 @@
 
 /* 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__)
+#if __LINUX_KERNEL_VERSION >= 0x030000 && defined __sh__
 # define __ASSUME_SENDMMSG_SYSCALL	1
 #endif
-#if defined __powerpc__ || defined __sh__
+#ifdef __sh__
 # define __ASSUME_SENDMMSG_SYSCALL_WITH_SOCKETCALL	1
 #endif
 
diff --git a/sysdeps/unix/sysv/linux/powerpc/kernel-features.h b/sysdeps/unix/sysv/linux/powerpc/kernel-features.h
new file mode 100644
index 0000000000..d8a98f1a69
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/powerpc/kernel-features.h
@@ -0,0 +1,42 @@
+/* Set flags signalling availability of kernel features based on given
+   kernel version number.  PowerPC 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/>.  */
+
+/* PowerPC uses socketcall.  */
+#define __ASSUME_SOCKETCALL		1
+
+/* The accept4 syscall was added for PowerPC in 2.6.37.  */
+#if __LINUX_KERNEL_VERSION >= 0x020625
+# define __ASSUME_ACCEPT4_SYSCALL	1
+#endif
+
+/* The recvmmsg syscall was added for PowerPC in 2.6.37.  */
+#if __LINUX_KERNEL_VERSION >= 0x020625
+# define __ASSUME_RECVMMSG_SYSCALL	1
+#endif
+
+/* The sendmmsg syscall was added for PowerPC 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>
+
+/* PowerPC64 IPC is always 64-bit and does not use __IPC_64.  */
+#undef __ASSUME_IPC64