Use direct socket syscalls for new kernels on i386, m68k, microblaze, sh.

Now that we have __ASSUME_* macros for direct socket syscalls to use
them instead of socketcall when they can be assumed to be available on
socketcall architectures, this patch defines those macros when
appropriate for i386, m68k, microblaze and sh (for 4.3, 4.3, all
supported kernels and 2.6.37, respectively; the only use of socketcall
support on microblaze is it allows accept4 and sendmmsg to be
supported on a wider range of kernel versions).

David, it seems that 32-bit SPARC is the only architecture supported
by glibc that still lacks these direct syscalls.  It would be good to
get them added to the SPARC kernel so we can eventually eliminate
socketcall support in glibc (and thereby just use entries in
sysdeps/unix/syscalls.list for most of these functions) when we can
assume new-enough kernels.

Tested for i386 (testsuite, and that installed shared libraries are
unchanged by this patch - not using a new enough kernel, so this
doesn't actually test much, but the i386 and m68k code is essentially
the same as that already in use for s390).

	* sysdeps/unix/sysv/linux/i386/kernel-features.h
	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_SOCKET_SYSCALL):
	New macro.
	[__LINUX_KERNEL_VERSION >= 0x040300]
	(__ASSUME_SOCKETPAIR_SYSCALL): Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_BIND_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_CONNECT_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_LISTEN_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_ACCEPT4_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300]
	(__ASSUME_ACCEPT4_FOR_ACCEPT_SYSCALL): Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300]
	(__ASSUME_GETSOCKOPT_SYSCALL): Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300]
	(__ASSUME_SETSOCKOPT_SYSCALL): Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300]
	(__ASSUME_GETSOCKNAME_SYSCALL): Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300]
	(__ASSUME_GETPEERNAME_SYSCALL): Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_SENDTO_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300]
	(__ASSUME_SENDTO_FOR_SEND_SYSCALL): Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_SENDMSG_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_RECVFROM_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300]
	(__ASSUME_RECVFROM_FOR_RECV_SYSCALL): Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_RECVMSG_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_SHUTDOWN_SYSCALL):
	Likewise.
	* sysdeps/unix/sysv/linux/m68k/kernel-features.h
	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_RECVMMSG_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_SENDMMSG_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_SOCKET_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300]
	(__ASSUME_SOCKETPAIR_SYSCALL): Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_BIND_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_CONNECT_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_LISTEN_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_ACCEPT4_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300]
	(__ASSUME_ACCEPT4_FOR_ACCEPT_SYSCALL): Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300]
	(__ASSUME_GETSOCKOPT_SYSCALL): Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300]
	(__ASSUME_SETSOCKOPT_SYSCALL): Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300]
	(__ASSUME_GETSOCKNAME_SYSCALL): Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300]
	(__ASSUME_GETPEERNAME_SYSCALL): Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_SENDTO_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300]
	(__ASSUME_SENDTO_FOR_SEND_SYSCALL): Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_SENDMSG_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_RECVFROM_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300]
	(__ASSUME_RECVFROM_FOR_RECV_SYSCALL): Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_RECVMSG_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_SHUTDOWN_SYSCALL):
	Likewise.
	* sysdeps/unix/sysv/linux/microblaze/kernel-features.h
	(__ASSUME_SOCKET_SYSCALL): Likewise.
	(__ASSUME_BIND_SYSCALL): Likewise.
	(__ASSUME_CONNECT_SYSCALL): Likewise.
	(__ASSUME_LISTEN_SYSCALL): Likewise.
	(__ASSUME_ACCEPT_SYSCALL): Likewise.
	(__ASSUME_GETSOCKNAME_SYSCALL): Likewise.
	(__ASSUME_GETPEERNAME_SYSCALL): Likewise.
	(__ASSUME_SOCKETPAIR_SYSCALL): Likewise.
	(__ASSUME_SEND_SYSCALL): Likewise.
	(__ASSUME_SENDTO_SYSCALL): Likewise.
	(__ASSUME_RECV_SYSCALL): Likewise.
	(__ASSUME_RECVFROM_SYSCALL): Likewise.
	(__ASSUME_SHUTDOWN_SYSCALL): Likewise.
	(__ASSUME_GETSOCKOPT_SYSCALL): Likewise.
	(__ASSUME_SETSOCKOPT_SYSCALL): Likewise.
	(__ASSUME_SENDMSG_SYSCALL): Likewise.
	(__ASSUME_RECVMSG_SYSCALL): Likewise.
	* sysdeps/unix/sysv/linux/sh/kernel-features.h
	[__LINUX_KERNEL_VERSION >= 0x020625] (__ASSUME_SOCKET_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x020625] (__ASSUME_BIND_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x020625] (__ASSUME_CONNECT_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x020625] (__ASSUME_LISTEN_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x020625] (__ASSUME_ACCEPT_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x020625]
	(__ASSUME_GETSOCKNAME_SYSCALL): Likewise.
	[__LINUX_KERNEL_VERSION >= 0x020625]
	(__ASSUME_GETPEERNAME_SYSCALL): Likewise.
	[__LINUX_KERNEL_VERSION >= 0x020625]
	(__ASSUME_SOCKETPAIR_SYSCALL): Likewise.
	[__LINUX_KERNEL_VERSION >= 0x020625] (__ASSUME_SEND_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x020625] (__ASSUME_SENDTO_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x020625] (__ASSUME_RECV_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x020625] (__ASSUME_RECVFROM_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x020625] (__ASSUME_SHUTDOWN_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x020625]
	(__ASSUME_GETSOCKOPT_SYSCALL): Likewise.
	[__LINUX_KERNEL_VERSION >= 0x020625]
	(__ASSUME_SETSOCKOPT_SYSCALL): Likewise.
	[__LINUX_KERNEL_VERSION >= 0x020625] (__ASSUME_SENDMSG_SYSCALL):
	Likewise.
	[__LINUX_KERNEL_VERSION >= 0x020625] (__ASSUME_RECVMSG_SYSCALL):
	Likewise.

1 files changed, 134 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index 3ead583031..b2eddff236 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,137 @@
+2015-12-09  Joseph Myers  <joseph@codesourcery.com>
+
+	* sysdeps/unix/sysv/linux/i386/kernel-features.h
+	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_SOCKET_SYSCALL):
+	New macro.
+	[__LINUX_KERNEL_VERSION >= 0x040300]
+	(__ASSUME_SOCKETPAIR_SYSCALL): Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_BIND_SYSCALL):
+	Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_CONNECT_SYSCALL):
+	Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_LISTEN_SYSCALL):
+	Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_ACCEPT4_SYSCALL):
+	Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x040300]
+	(__ASSUME_ACCEPT4_FOR_ACCEPT_SYSCALL): Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x040300]
+	(__ASSUME_GETSOCKOPT_SYSCALL): Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x040300]
+	(__ASSUME_SETSOCKOPT_SYSCALL): Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x040300]
+	(__ASSUME_GETSOCKNAME_SYSCALL): Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x040300]
+	(__ASSUME_GETPEERNAME_SYSCALL): Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_SENDTO_SYSCALL):
+	Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x040300]
+	(__ASSUME_SENDTO_FOR_SEND_SYSCALL): Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_SENDMSG_SYSCALL):
+	Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_RECVFROM_SYSCALL):
+	Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x040300]
+	(__ASSUME_RECVFROM_FOR_RECV_SYSCALL): Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_RECVMSG_SYSCALL):
+	Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_SHUTDOWN_SYSCALL):
+	Likewise.
+	* sysdeps/unix/sysv/linux/m68k/kernel-features.h
+	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_RECVMMSG_SYSCALL):
+	Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_SENDMMSG_SYSCALL):
+	Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_SOCKET_SYSCALL):
+	Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x040300]
+	(__ASSUME_SOCKETPAIR_SYSCALL): Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_BIND_SYSCALL):
+	Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_CONNECT_SYSCALL):
+	Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_LISTEN_SYSCALL):
+	Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_ACCEPT4_SYSCALL):
+	Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x040300]
+	(__ASSUME_ACCEPT4_FOR_ACCEPT_SYSCALL): Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x040300]
+	(__ASSUME_GETSOCKOPT_SYSCALL): Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x040300]
+	(__ASSUME_SETSOCKOPT_SYSCALL): Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x040300]
+	(__ASSUME_GETSOCKNAME_SYSCALL): Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x040300]
+	(__ASSUME_GETPEERNAME_SYSCALL): Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_SENDTO_SYSCALL):
+	Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x040300]
+	(__ASSUME_SENDTO_FOR_SEND_SYSCALL): Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_SENDMSG_SYSCALL):
+	Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_RECVFROM_SYSCALL):
+	Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x040300]
+	(__ASSUME_RECVFROM_FOR_RECV_SYSCALL): Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_RECVMSG_SYSCALL):
+	Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x040300] (__ASSUME_SHUTDOWN_SYSCALL):
+	Likewise.
+	* sysdeps/unix/sysv/linux/microblaze/kernel-features.h
+	(__ASSUME_SOCKET_SYSCALL): Likewise.
+	(__ASSUME_BIND_SYSCALL): Likewise.
+	(__ASSUME_CONNECT_SYSCALL): Likewise.
+	(__ASSUME_LISTEN_SYSCALL): Likewise.
+	(__ASSUME_ACCEPT_SYSCALL): Likewise.
+	(__ASSUME_GETSOCKNAME_SYSCALL): Likewise.
+	(__ASSUME_GETPEERNAME_SYSCALL): Likewise.
+	(__ASSUME_SOCKETPAIR_SYSCALL): Likewise.
+	(__ASSUME_SEND_SYSCALL): Likewise.
+	(__ASSUME_SENDTO_SYSCALL): Likewise.
+	(__ASSUME_RECV_SYSCALL): Likewise.
+	(__ASSUME_RECVFROM_SYSCALL): Likewise.
+	(__ASSUME_SHUTDOWN_SYSCALL): Likewise.
+	(__ASSUME_GETSOCKOPT_SYSCALL): Likewise.
+	(__ASSUME_SETSOCKOPT_SYSCALL): Likewise.
+	(__ASSUME_SENDMSG_SYSCALL): Likewise.
+	(__ASSUME_RECVMSG_SYSCALL): Likewise.
+	* sysdeps/unix/sysv/linux/sh/kernel-features.h
+	[__LINUX_KERNEL_VERSION >= 0x020625] (__ASSUME_SOCKET_SYSCALL):
+	Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x020625] (__ASSUME_BIND_SYSCALL):
+	Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x020625] (__ASSUME_CONNECT_SYSCALL):
+	Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x020625] (__ASSUME_LISTEN_SYSCALL):
+	Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x020625] (__ASSUME_ACCEPT_SYSCALL):
+	Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x020625]
+	(__ASSUME_GETSOCKNAME_SYSCALL): Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x020625]
+	(__ASSUME_GETPEERNAME_SYSCALL): Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x020625]
+	(__ASSUME_SOCKETPAIR_SYSCALL): Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x020625] (__ASSUME_SEND_SYSCALL):
+	Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x020625] (__ASSUME_SENDTO_SYSCALL):
+	Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x020625] (__ASSUME_RECV_SYSCALL):
+	Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x020625] (__ASSUME_RECVFROM_SYSCALL):
+	Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x020625] (__ASSUME_SHUTDOWN_SYSCALL):
+	Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x020625]
+	(__ASSUME_GETSOCKOPT_SYSCALL): Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x020625]
+	(__ASSUME_SETSOCKOPT_SYSCALL): Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x020625] (__ASSUME_SENDMSG_SYSCALL):
+	Likewise.
+	[__LINUX_KERNEL_VERSION >= 0x020625] (__ASSUME_RECVMSG_SYSCALL):
+	Likewise.
+
 2015-12-09  Aurelien Jarno  <aurelien@aurel32.net>
 
 	* sysdeps/unix/sysv/linux/mips/configure.ac (has-mpf64): Define to