libc/socket/socket.c

   1 /*
   2  *  ZeX/OS
   3  *  Copyright (C) 2007  Tomas 'ZeXx86' Jedrzejek (zexx86@zexos.org)
   4  *  Copyright (C) 2009  Tomas 'ZeXx86' Jedrzejek (zexx86@zexos.org)
   5  *  Copyright (C) 2010  Tomas 'ZeXx86' Jedrzejek (zexx86@zexos.org)
   6  *
   7  *  This program is free software: you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation, either version 3 of the License, or
  10  *  (at your option) any later version.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19  */
  20
  21
  22 #include <string.h>
  23 #include <sys/socket.h>
  24 #include <_libc.h>
  25
  26 int socket (int family, int type, int protocol)
  27 {
  28         asm volatile (
  29                 "movl $12, %%eax;"
  30                 "movl %0, %%ebx;"
  31                 "movl %1, %%ecx;"
  32                 "movl %2, %%edx;"
  33                 "int $0x80;" :: "g" (family), "g" (type), "g" (protocol) : "%eax", "%ebx", "%ecx", "%edx");
  34
  35         /* get return value */
  36         int *memptr = (int *) SYSV_SOCKET;
  37         int *ret = memptr;
  38
  39         errno_update ();
  40
  41         return (int) *ret;
  42 }
  43