sysdeps/unix/sysv/linux/alpha/sysdep.h

   1 /* Copyright (C) 1992, 1993, 1995, 1996, 1997, 2002, 2003, 2004
   2    Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Ulrich Drepper, <drepper@gnu.ai.mit.edu>, August 1995.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, write to the Free
  18    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19    02111-1307 USA.  */
  20
  21 #ifndef _LINUX_ALPHA_SYSDEP_H
  22 #define _LINUX_ALPHA_SYSDEP_H 1
  23
  24 #ifdef __ASSEMBLER__
  25 #include <asm/pal.h>
  26 #include <alpha/regdef.h>
  27 #endif
  28
  29 /* There is some commonality.  */
  30 #include <sysdeps/unix/alpha/sysdep.h>
  31
  32 /* For Linux we can use the system call table in the header file
  33         /usr/include/asm/unistd.h
  34    of the kernel.  But these symbols do not follow the SYS_* syntax
  35    so we have to redefine the `SYS_ify' macro here.  */
  36 #undef SYS_ify
  37 #ifdef __STDC__
  38 # define SYS_ify(syscall_name)  __NR_##syscall_name
  39 #else
  40 # define SYS_ify(syscall_name)  __NR_/**/syscall_name
  41 #endif
  42
  43 /* Define some aliases to make automatic syscall generation work
  44    properly.  The SYS_* variants are for the benefit of the files in
  45    sysdeps/unix.  */
  46 #define __NR_getpid     __NR_getxpid
  47 #define __NR_getuid     __NR_getxuid
  48 #define __NR_getgid     __NR_getxgid
  49 #define SYS_getpid      __NR_getxpid
  50 #define SYS_getuid      __NR_getxuid
  51 #define SYS_getgid      __NR_getxgid
  52
  53 /*
  54  * Some syscalls no Linux program should know about:
  55  */
  56 #define __NR_osf_sigprocmask     48
  57 #define __NR_osf_shmat          209
  58 #define __NR_osf_getsysinfo     256
  59 #define __NR_osf_setsysinfo     257
  60
  61 /* Help old kernel headers where particular syscalls are not available.  */
  62 #ifndef __NR_semtimedop
  63 # define __NR_semtimedop        423
  64 #endif
  65
  66 /* This is a kludge to make syscalls.list find these under the names
  67    pread and pwrite, since some kernel headers define those names
  68    and some define the *64 names for the same system calls.  */
  69 #if !defined __NR_pread && defined __NR_pread64
  70 # define __NR_pread __NR_pread64
  71 #endif
  72 #if !defined __NR_pwrite && defined __NR_pwrite64
  73 # define __NR_pwrite __NR_pwrite64
  74 #endif
  75
  76 /*
  77  * In order to get the hidden arguments for rt_sigaction set up
  78  * properly, we need to call the assembly version.  This shouldn't
  79  * happen except for inside sigaction.c, where we handle this
  80  * specially.  Catch other uses and error.
  81  */
  82
  83 #undef INLINE_SYSCALL
  84 #define INLINE_SYSCALL(name, nr, args...)                               \
  85 ({                                                                      \
  86         extern char ChEcK[__NR_##name == __NR_rt_sigaction ? -1 : 1]    \
  87           __attribute__((unused));                                      \
  88         INLINE_SYSCALL1(name, nr, args);                                \
  89 })
  90
  91 #undef INTERNAL_SYSCALL
  92 #define INTERNAL_SYSCALL(name, err_out, nr, args...)                    \
  93 ({                                                                      \
  94         extern char ChEcK[__NR_##name == __NR_rt_sigaction ? -1 : 1]    \
  95           __attribute__((unused));                                      \
  96         INTERNAL_SYSCALL1(name, err_out, nr, args);                     \
  97 })
  98
  99 #endif /* _LINUX_ALPHA_SYSDEP_H */