Remove socket.S implementation

This patch removes the socket.S implementation for all ports and replace
it by a C implementation using socketcall.  For ports that implement
the syscall directly, there is no change.

The patch idea is to simplify the socket function implementation that
uses the socketcall to be based on C implemetation instead of a pseudo
assembly implementation with arch specific parts.  The patch then remove
the assembly implementatation for the ports which uses socketcall
(i386, microblaze, mips, powerpc, sparc, m68k, s390 and sh).

I have cross-build GLIBC for afore-mentioned ports and tested on both
i386 and ppc32 without regressions.

61 files changed, 609 insertions, 1718 deletions

diff --git a/sysdeps/unix/sysv/linux/Makefile b/sysdeps/unix/sysv/linux/Makefile
index c26a12fa11..bfbabd4b4b 100644
--- a/sysdeps/unix/sysv/linux/Makefile
+++ b/sysdeps/unix/sysv/linux/Makefile
@@ -11,10 +11,6 @@ ifeq ($(subdir),malloc)
 CFLAGS-malloc.c += -DMORECORE_CLEARS=2
 endif
 
-ifeq ($(subdir),socket)
-sysdep_routines += internal_accept4 internal_recvmmsg internal_sendmmsg
-endif
-
 ifeq ($(subdir),misc)
 include $(firstword $(wildcard $(sysdirs:=/sysctl.mk)))
 
diff --git a/sysdeps/unix/sysv/linux/accept.S b/sysdeps/unix/sysv/linux/accept.S
deleted file mode 100644
index 491ebe2ab2..0000000000
--- a/sysdeps/unix/sysv/linux/accept.S
+++ /dev/null
@@ -1,6 +0,0 @@
-#define	socket	accept
-#define	__socket __libc_accept
-#define	NARGS	3
-#define NEED_CANCELLATION
-#include <socket.S>
-libc_hidden_def (accept)
diff --git a/sysdeps/unix/sysv/linux/accept.c b/sysdeps/unix/sysv/linux/accept.c
new file mode 100644
index 0000000000..72d42a7d85
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/accept.c
@@ -0,0 +1,31 @@
+/* Copyright (C) 2015 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/>.  */
+
+#include <errno.h>
+#include <signal.h>
+#include <sys/socket.h>
+
+#include <sysdep-cancel.h>
+#include <socketcall.h>
+
+int
+__libc_accept (int fd, __SOCKADDR_ARG addr, socklen_t *len)
+{
+  return SOCKETCALL_CANCEL (accept, fd, addr.__sockaddr__, len);
+}
+weak_alias (__libc_accept, accept)
+libc_hidden_def (accept)
diff --git a/sysdeps/unix/sysv/linux/accept4.c b/sysdeps/unix/sysv/linux/accept4.c
index 5dbcef3ef0..ec6b4c236d 100644
--- a/sysdeps/unix/sysv/linux/accept4.c
+++ b/sysdeps/unix/sysv/linux/accept4.c
@@ -50,11 +50,14 @@ accept4 (int fd, __SOCKADDR_ARG addr, socklen_t *addr_len, int flags)
   return result;
 }
 #elif defined __NR_socketcall
-# ifndef __ASSUME_ACCEPT4_SOCKETCALL
-extern int __internal_accept4 (int fd, __SOCKADDR_ARG addr,
-			       socklen_t *addr_len, int flags)
-     attribute_hidden;
-
+# include <socketcall.h>
+# ifdef __ASSUME_ACCEPT4_SOCKETCALL
+int
+accept4 (int fd, __SOCKADDR_ARG addr, socklen_t *addr_len, int flags)
+{
+  return SOCKETCALL_CANCEL (accept4, fd, addr.__sockaddr__, addr_len, flags);
+}
+# else
 static int have_accept4;
 
 int
@@ -62,7 +65,8 @@ accept4 (int fd, __SOCKADDR_ARG addr, socklen_t *addr_len, int flags)
 {
   if (__glibc_likely (have_accept4 >= 0))
     {
-      int ret = __internal_accept4 (fd, addr, addr_len, flags);
+      int ret = SOCKETCALL_CANCEL (accept4, fd, addr.__sockaddr__, addr_len,
+				   flags);
       /* The kernel returns -EINVAL for unknown socket operations.
 	 We need to convert that error to an ENOSYS error.  */
       if (__builtin_expect (ret < 0, 0)
@@ -72,7 +76,7 @@ accept4 (int fd, __SOCKADDR_ARG addr, socklen_t *addr_len, int flags)
 	  /* Try another call, this time with the FLAGS parameter
 	     cleared and an invalid file descriptor.  This call will not
 	     cause any harm and it will return immediately.  */
-	  ret = __internal_accept4 (-1, addr, addr_len, 0);
+	  ret = SOCKETCALL_CANCEL (invalid, -1);
 	  if (errno == EINVAL)
 	    {
 	      have_accept4 = -1;
@@ -90,11 +94,8 @@ accept4 (int fd, __SOCKADDR_ARG addr, socklen_t *addr_len, int flags)
   __set_errno (ENOSYS);
   return -1;
 }
-# else
-/* When __ASSUME_ACCEPT4_SOCKETCALL accept4 is defined in
-   internal_accept4.S.  */
-# endif
-#else
+# endif /* __ASSUME_ACCEPT4_SOCKETCALL  */
+#else /* __NR_socketcall   */
 int
 accept4 (int fd, __SOCKADDR_ARG addr, socklen_t *addr_len, int flags)
 {
diff --git a/sysdeps/unix/sysv/linux/arm/internal_accept4.S b/sysdeps/unix/sysv/linux/arm/internal_accept4.S
deleted file mode 100644
index eeb5f50a26..0000000000
--- a/sysdeps/unix/sysv/linux/arm/internal_accept4.S
+++ /dev/null
@@ -1,6 +0,0 @@
-/* Tag_ABI_align8_preserved: This code preserves 8-byte
-   alignment in any callee.  */
-	.eabi_attribute 25, 1
-/* Tag_ABI_align8_needed: This code may require 8-byte alignment from
-   the caller.  */
-	.eabi_attribute 24, 1
diff --git a/sysdeps/unix/sysv/linux/arm/internal_recvmmsg.S b/sysdeps/unix/sysv/linux/arm/internal_recvmmsg.S
deleted file mode 100644
index eeb5f50a26..0000000000
--- a/sysdeps/unix/sysv/linux/arm/internal_recvmmsg.S
+++ /dev/null
@@ -1,6 +0,0 @@
-/* Tag_ABI_align8_preserved: This code preserves 8-byte
-   alignment in any callee.  */
-	.eabi_attribute 25, 1
-/* Tag_ABI_align8_needed: This code may require 8-byte alignment from
-   the caller.  */
-	.eabi_attribute 24, 1
diff --git a/sysdeps/unix/sysv/linux/arm/internal_sendmmsg.S b/sysdeps/unix/sysv/linux/arm/internal_sendmmsg.S
deleted file mode 100644
index eeb5f50a26..0000000000
--- a/sysdeps/unix/sysv/linux/arm/internal_sendmmsg.S
+++ /dev/null
@@ -1,6 +0,0 @@
-/* Tag_ABI_align8_preserved: This code preserves 8-byte
-   alignment in any callee.  */
-	.eabi_attribute 25, 1
-/* Tag_ABI_align8_needed: This code may require 8-byte alignment from
-   the caller.  */
-	.eabi_attribute 24, 1
diff --git a/sysdeps/unix/sysv/linux/bind.S b/sysdeps/unix/sysv/linux/bind.S
deleted file mode 100644
index 61fb5ebff8..0000000000
--- a/sysdeps/unix/sysv/linux/bind.S
+++ /dev/null
@@ -1,3 +0,0 @@
-#define	socket	bind
-#define	NARGS	3
-#include <socket.S>
diff --git a/sysdeps/unix/sysv/linux/bind.c b/sysdeps/unix/sysv/linux/bind.c
new file mode 100644
index 0000000000..db72df6c77
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/bind.c
@@ -0,0 +1,29 @@
+/* Copyright (C) 2015 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/>.  */
+
+#include <errno.h>
+#include <signal.h>
+#include <sys/socket.h>
+
+#include <socketcall.h>
+
+int
+__bind (int fd, __CONST_SOCKADDR_ARG addr, socklen_t len)
+{
+  return SOCKETCALL (bind, fd, addr.__soc