gcc/ada/s-intman-vms.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                 GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS                 --
   4 --                                                                          --
   5 --           S Y S T E M . I N T E R R U P T _ M A N A G E M E N T          --
   6 --                                                                          --
   7 --                                  B o d y                                 --
   8 --                                                                          --
   9 --         Copyright (C) 1992-2009, 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 -- GNARL was developed by the GNARL team at Florida State University.       --
  28 -- Extensive contributions were provided by Ada Core Technologies, Inc.     --
  29 --                                                                          --
  30 ------------------------------------------------------------------------------
  31
  32 --  This is a OpenVMS/Alpha version of this package
  33
  34 package body System.Interrupt_Management is
  35
  36    ----------------
  37    -- Initialize --
  38    ----------------
  39
  40    Initialized : Boolean := False;
  41
  42    procedure Initialize is
  43       use System.OS_Interface;
  44       Status : Cond_Value_Type;
  45
  46    begin
  47       if Initialized then
  48          return;
  49       end if;
  50
  51       Initialized := True;
  52       Abort_Task_Interrupt := Interrupt_ID_0;
  53       --  Unused
  54
  55       Reserve := Reserve or Keep_Unmasked or Keep_Masked;
  56       Reserve (Interrupt_ID_0) := True;
  57
  58       Sys_Crembx
  59         (Status => Status,
  60          Prmflg => 0,
  61          Chan   => Rcv_Interrupt_Chan,
  62          Maxmsg => Interrupt_ID'Size,
  63          Bufquo => Interrupt_Bufquo,
  64          Lognam => "GNAT_Interrupt_Mailbox",
  65          Flags  => CMB_M_READONLY);
  66       pragma Assert ((Status and 1) = 1);
  67
  68       Sys_Assign
  69         (Status => Status,
  70          Devnam => "GNAT_Interrupt_Mailbox",
  71          Chan   => Snd_Interrupt_Chan,
  72          Flags  => AGN_M_WRITEONLY);
  73       pragma Assert ((Status and 1) = 1);
  74    end Initialize;
  75
  76 end System.Interrupt_Management;