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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;