sysdeps/unix/sysdep.h

   1 /* Copyright (C) 1991, 92, 93, 96 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 <sysdeps/generic/sysdep.h>
  20
  21 #include <syscall.h>
  22 #define HAVE_SYSCALLS
  23
  24 /* Note that using a `PASTE' macro loses.  */
  25 #ifdef  __STDC__
  26 #define SYSCALL__(name, args)   PSEUDO (__##name, name, args)
  27 #else
  28 #define SYSCALL__(name, args)   PSEUDO (__/**/name, name, args)
  29 #endif
  30 #define SYSCALL(name, args)     PSEUDO (name, name, args)
  31
  32 /* Machine-dependent sysdep.h files are expected to define the macro
  33    PSEUDO (function_name, syscall_name) to emit assembly code to define the
  34    C-callable function FUNCTION_NAME to do system call SYSCALL_NAME.
  35    r0 and r1 are the system call outputs.  MOVE(x, y) should be defined as
  36    an instruction such that "MOVE(r1, r0)" works.  ret should be defined
  37    as the return instruction.  */
  38
  39 #ifdef __STDC__
  40 #define SYS_ify(syscall_name) SYS_##syscall_name
  41 #else
  42 #define SYS_ify(syscall_name) SYS_/**/syscall_name
  43 #endif
  44
  45 /* Terminate a system call named SYM.  This is used on some platforms
  46    to generate correct debugging information.  */
  47 #define PSEUDO_END(sym)