sysdeps/unix/sysv/linux/arm/socket.S

   1 /* Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Library General Public License as
   6    published by the Free Software Foundation; either version 2 of the
   7    License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Library General Public License for more details.
  13
  14    You should have received a copy of the GNU Library General Public
  15    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  16    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17    Boston, MA 02111-1307, USA.  */
  18
  19 #include <sysdep.h>
  20 #include <socketcall.h>
  21
  22 #define P(a, b) P2(a, b)
  23 #define P2(a, b) a##b
  24
  25         .text
  26 /* The socket-oriented system calls are handled unusally in Linux.
  27    They are all gated through the single `socketcall' system call number.
  28    `socketcall' takes two arguments: the first is the subcode, specifying
  29    which socket function is being called; and the second is a pointer to
  30    the arguments to the specific function.
  31
  32    The .S files for the other calls just #define socket and #include this.  */
  33
  34 #ifndef __socket
  35 #define __socket P(__,socket)
  36 #endif
  37
  38 .globl __socket
  39 ENTRY (__socket)
  40
  41         /* Do the system call trap.  */
  42         swi SYS_ify(socketcall)
  43
  44         /* %eax is < 0 if there was an error.  */
  45         cmn r0, $124
  46         bge syscall_error
  47
  48         /* Successful; return the syscall's value.  */
  49         RETINSTR(mov,pc,r14)
  50
  51 PSEUDO_END (__socket)
  52
  53 weak_alias (__socket, socket)