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.

1 files changed, 0 insertions, 122 deletions

diff --git a/sysdeps/unix/sysv/linux/i386/socket.S b/sysdeps/unix/sysv/linux/i386/socket.S
deleted file mode 100644
index d87390c662..0000000000
--- a/sysdeps/unix/sysv/linux/i386/socket.S
+++ /dev/null
@@ -1,122 +0,0 @@
-/* Copyright (C) 1995-2015 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 <sysdep-cancel.h>
-#include <socketcall.h>
-#include <tls.h>
-
-#define P(a, b) P2(a, b)
-#define P2(a, b) a##b
-
-	.text
-/* The socket-oriented system calls are handled unusally in Linux/i386.
-   They are all gated through the single `socketcall' system call number.
-   `socketcall' takes two arguments: the first is the subcode, specifying
-   which socket function is being called; and the second is a pointer to
-   the arguments to the specific function.
-
-   The .S files for the other calls just #define socket and #include this.  */
-
-#ifndef __socket
-# ifndef NO_WEAK_ALIAS
-#  define __socket P(__,socket)
-# else
-#  define __socket socket
-# endif
-#endif
-
-.globl __socket
-ENTRY (__socket)
-#if defined NEED_CANCELLATION && defined CENABLE
-	SINGLE_THREAD_P
-	jne 1f
-#endif
-
-	/* Save registers.  */
-	movl %ebx, %edx
-	cfi_register (3, 2)
-
-	movl $SYS_ify(socketcall), %eax	/* System call number in %eax.  */
-
-	/* Use ## so `socket' is a separate token that might be #define'd.  */
-	movl $P(SOCKOP_,socket), %ebx	/* Subcode is first arg to syscall.  */
-	lea 4(%esp), %ecx		/* Address of args is 2nd arg.  */
-
-        /* Do the system call trap.  */
-	ENTER_KERNEL
-
-	/* Restore registers.  */
-	movl %edx, %ebx
-	cfi_restore (3)
-
-	/* %eax is < 0 if there was an error.  */
-	cmpl $-125, %eax
-	jae SYSCALL_ERROR_LABEL
-
-	/* Successful; return the syscall's value.  */
-	ret
-
-
-#if defined NEED_CANCELLATION && defined CENABLE
-	/* We need one more register.  */
-1:	pushl %esi
-	cfi_adjust_cfa_offset(4)
-
-	/* Enable asynchronous cancellation.  */
-	CENABLE
-	movl %eax, %esi
-	cfi_offset(6, -8)		/* %esi */
-
-	/* Save registers.  */
-	movl %ebx, %edx
-	cfi_register (3, 2)
-
-	movl $SYS_ify(socketcall), %eax	/* System call number in %eax.  */
-
-	/* Use ## so `socket' is a separate token that might be #define'd.  */
-	movl $P(SOCKOP_,socket), %ebx	/* Subcode is first arg to syscall.  */
-	lea 8(%esp), %ecx		/* Address of args is 2nd arg.  */
-
-        /* Do the system call trap.  */
-	ENTER_KERNEL
-
-	/* Restore registers.  */
-	movl %edx, %ebx
-	cfi_restore (3)
-
-	/* Restore the cancellation.  */
-	xchgl %esi, %eax
-	CDISABLE
-
-	/* Restore registers.  */
-	movl %esi, %eax
-	popl %esi
-	cfi_restore (6)
-	cfi_adjust_cfa_offset(-4)
-
-	/* %eax is < 0 if there was an error.  */
-	cmpl $-125, %eax
-	jae SYSCALL_ERROR_LABEL
-
-	/* Successful; return the syscall's value.  */
-	ret
-#endif
-PSEUDO_END (__socket)
-
-#ifndef NO_WEAK_ALIAS
-weak_alias (__socket, socket)
-#endif