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

   1 /* Copyright (C) 1993 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
  16 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
  17 Cambridge, MA 02139, 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