gcc/ada/s-tpinop.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                 GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS                 --
   4 --                                                                          --
   5 --               SYSTEM.TASK_PRIMITIVES.INTERRUPT_OPERATIONS                --
   6 --                                                                          --
   7 --                                 B o d y                                  --
   8 --                                                                          --
   9 --          Copyright (C) 1998-2007, 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 2,  or (at your option) any later ver- --
  14 -- sion. GNARL 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.  See the GNU General Public License --
  17 -- for  more details.  You should have  received  a copy of the GNU General --
  18 -- Public License  distributed with GNARL; see file COPYING.  If not, write --
  19 -- to  the  Free Software Foundation,  51  Franklin  Street,  Fifth  Floor, --
  20 -- Boston, MA 02110-1301, USA.                                              --
  21 --                                                                          --
  22 -- As a special exception,  if other files  instantiate  generics from this --
  23 -- unit, or you link  this unit with other files  to produce an executable, --
  24 -- this  unit  does not  by itself cause  the resulting  executable  to  be --
  25 -- covered  by the  GNU  General  Public  License.  This exception does not --
  26 -- however invalidate  any other reasons why  the executable file  might be --
  27 -- covered by the  GNU Public License.                                      --
  28 --                                                                          --
  29 -- GNARL was developed by the GNARL team at Florida State University.       --
  30 -- Extensive contributions were provided by Ada Core Technologies, Inc.     --
  31 --                                                                          --
  32 ------------------------------------------------------------------------------
  33
  34 package body System.Task_Primitives.Interrupt_Operations is
  35
  36    --  ??? The VxWorks version of System.Interrupt_Management needs to access
  37    --  this array, but due to elaboration problems, it can't with this
  38    --  package directly, so we export this variable for now.
  39
  40    Interrupt_ID_Map : array (IM.Interrupt_ID) of ST.Task_Id;
  41    pragma Export (Ada, Interrupt_ID_Map,
  42      "system__task_primitives__interrupt_operations__interrupt_id_map");
  43
  44    ----------------------
  45    -- Get_Interrupt_ID --
  46    ----------------------
  47
  48    function Get_Interrupt_ID (T : ST.Task_Id) return IM.Interrupt_ID is
  49       use type ST.Task_Id;
  50
  51    begin
  52       for Interrupt in IM.Interrupt_ID loop
  53          if Interrupt_ID_Map (Interrupt) = T then
  54             return Interrupt;
  55          end if;
  56       end loop;
  57
  58       raise Program_Error;
  59    end Get_Interrupt_ID;
  60
  61    -----------------
  62    -- Get_Task_Id --
  63    -----------------
  64
  65    function Get_Task_Id (Interrupt : IM.Interrupt_ID) return ST.Task_Id is
  66    begin
  67       return Interrupt_ID_Map (Interrupt);
  68    end Get_Task_Id;
  69
  70    ----------------------
  71    -- Set_Interrupt_ID --
  72    ----------------------
  73
  74    procedure Set_Interrupt_ID (Interrupt : IM.Interrupt_ID; T : ST.Task_Id) is
  75    begin
  76       Interrupt_ID_Map (Interrupt) := T;
  77    end Set_Interrupt_ID;
  78
  79 end System.Task_Primitives.Interrupt_Operations;