gcc/ada/s-tpinop.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                GNU ADA RUN-TIME LIBRARY (GNARL) COMPONENTS               --
   4 --                                                                          --
   5 --                S Y S T E M . T A S K _ P R I M I T I V E S .             --
   6 --                   I N T E R R U P T _ O P E R A T I O N S                --
   7 --                                                                          --
   8 --                                  B o d y                                 --
   9 --                                                                          --
  10 --                                                                          --
  11 --          Copyright (C) 1998-2001 Free Software Foundation, Inc.          --
  12 --                                                                          --
  13 -- GNARL is free software; you can  redistribute it  and/or modify it under --
  14 -- terms of the  GNU General Public License as published  by the Free Soft- --
  15 -- ware  Foundation;  either version 2,  or (at your option) any later ver- --
  16 -- sion. GNARL is distributed in the hope that it will be useful, but WITH- --
  17 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  18 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  19 -- for  more details.  You should have  received  a copy of the GNU General --
  20 -- Public License  distributed with GNARL; see file COPYING.  If not, write --
  21 -- to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, --
  22 -- MA 02111-1307, USA.                                                      --
  23 --                                                                          --
  24 -- As a special exception,  if other files  instantiate  generics from this --
  25 -- unit, or you link  this unit with other files  to produce an executable, --
  26 -- this  unit  does not  by itself cause  the resulting  executable  to  be --
  27 -- covered  by the  GNU  General  Public  License.  This exception does not --
  28 -- however invalidate  any other reasons why  the executable file  might be --
  29 -- covered by the  GNU Public License.                                      --
  30 --                                                                          --
  31 -- GNARL was developed by the GNARL team at Florida State University. It is --
  32 -- now maintained by Ada Core Technologies Inc. in cooperation with Florida --
  33 -- State University (http://www.gnat.com).                                  --
  34 --                                                                          --
  35 ------------------------------------------------------------------------------
  36
  37 package body System.Task_Primitives.Interrupt_Operations is
  38
  39    --  ??? The VxWorks version of System.Interrupt_Management needs to access
  40    --  this array, but due to elaboration problems, it can't with this
  41    --  package directly, so we export this variable for now.
  42
  43    Interrupt_ID_Map : array (IM.Interrupt_ID) of ST.Task_ID;
  44    pragma Export (Ada, Interrupt_ID_Map,
  45      "system__task_primitives__interrupt_operations__interrupt_id_map");
  46
  47    ----------------------
  48    -- Get_Interrupt_ID --
  49    ----------------------
  50
  51    function Get_Interrupt_ID (T : ST.Task_ID) return IM.Interrupt_ID is
  52       use type ST.Task_ID;
  53
  54    begin
  55       for Interrupt in IM.Interrupt_ID loop
  56          if Interrupt_ID_Map (Interrupt) = T then
  57             return Interrupt;
  58          end if;
  59       end loop;
  60
  61       raise Program_Error;
  62    end Get_Interrupt_ID;
  63
  64    -----------------
  65    -- Get_Task_ID --
  66    -----------------
  67
  68    function Get_Task_ID (Interrupt : IM.Interrupt_ID) return ST.Task_ID is
  69    begin
  70       return Interrupt_ID_Map (Interrupt);
  71    end Get_Task_ID;
  72
  73    ----------------------
  74    -- Set_Interrupt_ID --
  75    ----------------------
  76
  77    procedure Set_Interrupt_ID (Interrupt : IM.Interrupt_ID; T : ST.Task_ID) is
  78    begin
  79       Interrupt_ID_Map (Interrupt) := T;
  80    end Set_Interrupt_ID;
  81
  82 end System.Task_Primitives.Interrupt_Operations;