1------------------------------------------------------------------------------
2--                                                                          --
3--                GNU ADA RUN-TIME LIBRARY (GNARL) COMPONENTS               --
4--                                                                          --
5--                          S Y S T E M .  L I N U X                        --
6--                                                                          --
7--                                  S p e c                                 --
8--                                                                          --
9--          Copyright (C) 2009-2011, Free Software Foundation, Inc.         --
10--                                                                          --
11-- GNARL is free software; you can  redistribute it  and/or modify it under --
12-- terms of the  GNU General Public License as published  by the Free Soft- --
13-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
14-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
15-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
16-- or FITNESS FOR A PARTICULAR PURPOSE.                                     --
17--                                                                          --
18-- As a special exception under Section 7 of GPL version 3, you are granted --
19-- additional permissions described in the GCC Runtime Library Exception,   --
20-- version 3.1, as published by the Free Software Foundation.               --
21--                                                                          --
22-- You should have received a copy of the GNU General Public License and    --
23-- a copy of the GCC Runtime Library Exception along with this program;     --
24-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
25-- <http://www.gnu.org/licenses/>.                                          --
26--                                                                          --
27--                                                                          --
28------------------------------------------------------------------------------
29
30--  This is the alpha version of this package
31
32--  This package encapsulates cpu specific differences between implementations
33--  of GNU/Linux, in order to share s-osinte-linux.ads.
34
35--  PLEASE DO NOT add any with-clauses to this package or remove the pragma
36--  Preelaborate. This package is designed to be a bottom-level (leaf) package.
37
38package System.Linux is
39   pragma Preelaborate;
40
41   -----------
42   -- Errno --
43   -----------
44
45   EAGAIN    : constant := 35;
46   EINTR     : constant := 4;
47   EINVAL    : constant := 22;
48   ENOMEM    : constant := 12;
49   EPERM     : constant := 1;
50   ETIMEDOUT : constant := 60;
51
52   -------------
53   -- Signals --
54   -------------
55
56   SIGHUP     : constant := 1; --  hangup
57   SIGINT     : constant := 2; --  interrupt (rubout)
58   SIGQUIT    : constant := 3; --  quit (ASCD FS)
59   SIGILL     : constant := 4; --  illegal instruction (not reset)
60   SIGTRAP    : constant := 5; --  trace trap (not reset)
61   SIGIOT     : constant := 6; --  IOT instruction
62   SIGABRT    : constant := 6; --  used by abort, replace SIGIOT in the  future
63   SIGFPE     : constant := 8; --  floating point exception
64   SIGKILL    : constant := 9; --  kill (cannot be caught or ignored)
65   SIGBUS     : constant := 10; --  bus error
66   SIGSEGV    : constant := 11; --  segmentation violation
67   SIGPIPE    : constant := 13; --  write on a pipe with no one to read it
68   SIGALRM    : constant := 14; --  alarm clock
69   SIGTERM    : constant := 15; --  software termination signal from kill
70   SIGURG     : constant := 16; --  urgent condition on IO channel
71   SIGSTOP    : constant := 17; --  stop (cannot be caught or ignored)
72   SIGTSTP    : constant := 18; --  user stop requested from tty
73   SIGCONT    : constant := 19; --  stopped process has been continued
74   SIGCLD     : constant := 20; --  alias for SIGCHLD
75   SIGCHLD    : constant := 20; --  child status change
76   SIGTTIN    : constant := 21; --  background tty read attempted
77   SIGTTOU    : constant := 22; --  background tty write attempted
78   SIGIO      : constant := 23; --  I/O now possible (4.2 BSD)
79   SIGPOLL    : constant := 23; --  pollable event occurred
80   SIGXCPU    : constant := 24; --  CPU time limit exceeded
81   SIGXFSZ    : constant := 25; --  filesize limit exceeded
82   SIGVTALRM  : constant := 26; --  virtual timer expired
83   SIGPROF    : constant := 27; --  profiling timer expired
84   SIGWINCH   : constant := 28; --  window size change
85   SIGPWR     : constant := 29; --  power-fail restart
86   SIGUSR1    : constant := 30; --  user defined signal 1
87   SIGUSR2    : constant := 31; --  user defined signal 2
88
89   SIGLTHRRES : constant := 32; --  GNU/LinuxThreads restart signal
90   SIGLTHRCAN : constant := 33; --  GNU/LinuxThreads cancel signal
91   SIGLTHRDBG : constant := 34; --  GNU/LinuxThreads debugger signal
92
93   SIGADAABORT : constant := SIGABRT;
94   --  Change this if you want to use another signal for task abort.
95   --  SIGTERM might be a good one.
96
97   SIGUNUSED  : constant := 0;
98   SIGSTKFLT  : constant := 0;
99   SIGLOST    : constant := 0;
100   --  These don't exist for Linux/Alpha.  The constants are present
101   --  so that we can continue to use a-intnam-linux.ads.
102
103   --  struct_sigaction offsets
104
105   sa_handler_pos : constant := 0;
106   sa_mask_pos    : constant := Standard'Address_Size / 8;
107   sa_flags_pos   : constant := 128 + sa_mask_pos;
108
109   SA_SIGINFO  : constant := 16#40#;
110   SA_ONSTACK  : constant := 16#01#;
111
112end System.Linux;
113