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

   1 /* Copyright (C) 1992-2012 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper, <drepper@gnu.ai.mit.edu>, August 1995.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library.  If not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #ifndef _LINUX_ALPHA_SYSDEP_H
  20 #define _LINUX_ALPHA_SYSDEP_H 1
  21
  22 #ifdef __ASSEMBLER__
  23 #include <asm/pal.h>
  24 #include <alpha/regdef.h>
  25 #endif
  26
  27 /* There is some commonality.  */
  28 #include <sysdeps/unix/alpha/sysdep.h>
  29
  30 #include <tls.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 #define SYS_ify(syscall_name)   __NR_##syscall_name
  38
  39 /* Define some aliases to make automatic syscall generation work
  40    properly.  The SYS_* variants are for the benefit of the files in
  41    sysdeps/unix.  */
  42 #define __NR_getpid     __NR_getxpid
  43 #define __NR_getuid     __NR_getxuid
  44 #define __NR_getgid     __NR_getxgid
  45 #define SYS_getpid      __NR_getxpid
  46 #define SYS_getuid      __NR_getxuid
  47 #define SYS_getgid      __NR_getxgid
  48
  49 /*
  50  * Some syscalls no Linux program should know about:
  51  */
  52 #define __NR_osf_sigprocmask     48
  53 #define __NR_osf_shmat          209
  54 #define __NR_osf_getsysinfo     256
  55 #define __NR_osf_setsysinfo     257
  56
  57 /* Help old kernel headers where particular syscalls are not available.  */
  58 #ifndef __NR_semtimedop
  59 # define __NR_semtimedop        423
  60 #endif
  61
  62 /* This is a kludge to make syscalls.list find these under the names
  63    pread and pwrite, since some kernel headers define those names
  64    and some define the *64 names for the same system calls.  */
  65 #if !defined __NR_pread && defined __NR_pread64
  66 # define __NR_pread __NR_pread64
  67 #endif
  68 #if !defined __NR_pwrite && defined __NR_pwrite64
  69 # define __NR_pwrite __NR_pwrite64
  70 #endif
  71
  72 /*
  73  * In order to get the hidden arguments for rt_sigaction set up
  74  * properly, we need to call the assembly version.  This shouldn't
  75  * happen except for inside sigaction.c, where we handle this
  76  * specially.  Catch other uses and error.
  77  */
  78
  79 #undef INLINE_SYSCALL
  80 #define INLINE_SYSCALL(name, nr, args...)                               \
  81 ({                                                                      \
  82         extern char ChEcK[__NR_##name == __NR_rt_sigaction ? -1 : 1]    \
  83           __attribute__((unused));                                      \
  84         INLINE_SYSCALL1(name, nr, args);                                \
  85 })
  86
  87 #undef INTERNAL_SYSCALL
  88 #define INTERNAL_SYSCALL(name, err_out, nr, args...)                    \
  89 ({                                                                      \
  90         extern char ChEcK[__NR_##name == __NR_rt_sigaction ? -1 : 1]    \
  91           __attribute__((unused));                                      \
  92         INTERNAL_SYSCALL1(name, err_out, nr, args);                     \
  93 })
  94
  95 #endif /* _LINUX_ALPHA_SYSDEP_H */