sysdeps/unix/bsd/sun/m68k/syscall.S

   1 /* Copyright (C) 1993, 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 Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the 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    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, write to the Free
  16    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17    02111-1307 USA.  */
  18
  19 #include <sysdep.h>
  20
  21 ENTRY (syscall)
  22         movel sp@, d0           /* Save return address in D0.  */
  23         movel sp@(4), sp@       /* Put syscall number at top of stack.  */
  24         movel d0, sp@(4)        /* Put return address under it.  */
  25         trap #0                 /* Do syscall; pops number from stack.  */
  26         jcs error
  27         ret
  28 error:  jmp syscall_error