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------------------------------------------------------------------------------
-- --
-- GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS --
-- --
-- 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 --
-- --
-- B o d y --
-- --
-- Copyright (C) 1992-2010, Free Software Foundation, Inc. --
-- --
-- GNARL is free software; you can redistribute it and/or modify it under --
-- terms of the GNU General Public License as published by the Free Soft- --
-- ware Foundation; either version 3, or (at your option) any later ver- --
-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
-- or FITNESS FOR A PARTICULAR PURPOSE. --
-- --
-- As a special exception under Section 7 of GPL version 3, you are granted --
-- additional permissions described in the GCC Runtime Library Exception, --
-- version 3.1, as published by the Free Software Foundation. --
-- --
-- You should have received a copy of the GNU General Public License and --
-- a copy of the GCC Runtime Library Exception along with this program; --
-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
-- <http://www.gnu.org/licenses/>. --
-- --
-- GNARL was developed by the GNARL team at Florida State University. --
-- Extensive contributions were provided by Ada Core Technologies, Inc. --
-- --
------------------------------------------------------------------------------
-- This is the VxWorks version of this package
-- It is simpler than other versions because the Ada interrupt handling
-- mechanisms are used for hardware interrupts rather than signals.
package body System.Interrupt_Management is
use System.OS_Interface;
use type Interfaces.C.int;
-----------------------
-- Local Subprograms --
-----------------------
function State (Int : Interrupt_ID) return Character;
pragma Import (C, State, "__gnat_get_interrupt_state");
-- Get interrupt state. Defined in init.c The input argument is the
-- hardware interrupt number, and the result is one of the following:
Runtime : constant Character := 'r';
Default : constant Character := 's';
-- 'n' this interrupt not set by any Interrupt_State pragma
-- 'u' Interrupt_State pragma set state to User
-- 'r' Interrupt_State pragma set state to Runtime
-- 's' Interrupt_State pragma set state to System (use "default"
-- system handler)
----------------
-- Initialize --
----------------
Initialized : Boolean := False;
-- Set to True once Initialize is called, further calls have no effect
procedure Initialize is
begin
if Initialized then
return;
end if;
Initialized := True;
-- Change this if you want to use another signal for task abort.
-- SIGTERM might be a good one.
Abort_Task_Interrupt := SIGABRT;
-- Initialize hardware interrupt handling
pragma Assert (Reserve = (Interrupt_ID'Range => False));
-- Check all interrupts for state that requires keeping them reserved
for J in Interrupt_ID'Range loop
if State (J) = Default or else State (J) = Runtime then
Reserve (J) := True;
end if;
end loop;
end Initialize;
end System.Interrupt_Management;
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