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------------------------------------------------------------------------------
-- --
-- GNU ADA RUN-TIME LIBRARY (GNARL) COMPONENTS --
-- --
-- I N T E R F A C E S . V T H R E A D S --
-- --
-- S p e c --
-- --
-- Copyright (C) 2002-2003, 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 2, or (at your option) any later ver- --
-- sion. GNARL 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. See the GNU General Public License --
-- for more details. You should have received a copy of the GNU General --
-- Public License distributed with GNARL; see file COPYING. If not, write --
-- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
-- MA 02111-1307, USA. --
-- --
-- As a special exception, if other files instantiate generics from this --
-- unit, or you link this unit with other files to produce an executable, --
-- this unit does not by itself cause the resulting executable to be --
-- covered by the GNU General Public License. This exception does not --
-- however invalidate any other reasons why the executable file might be --
-- covered by the GNU Public License. --
-- --
-- GNARL was developed by the GNARL team at Florida State University. --
-- Extensive contributions were provided by Ada Core Technologies, Inc. --
-- --
------------------------------------------------------------------------------
-- Implement APEX process registration for AE653. The routines exported
-- by this package are only called from the APEX CREATE and START routines
-- in the AE653 vThreads API. A context clause for this unit must appear in
-- the Ada APEX binding.
--
-- If this package appears in a context clause for an application that will
-- be run in a non-AE653 version of VxWorks, or in a non-vThreads AE653
-- partition, link or load errors for the symbols procCreateHookAdd and
-- procStartHookAdd will occur, unless these routines are defined
-- in the application. This is used when simulating AE653 in AE 1.1.
with System.OS_Interface;
with Interfaces.C;
package Interfaces.Vthreads is
function Setup_Thread return System.Address;
-- Register an existing vxWorks task. This routine is used
-- under AE 1.1 when simulating AE 653.
function Install_Signal_Handlers return Interfaces.C.int;
pragma Export (C, Install_Signal_Handlers,
"__gnat_install_signal_handlers");
-- Map the synchronous signals SIGSEGV, SIGFPE, SIGILL and
-- SIGBUS to Ada exceptions for the calling ARINC process.
-- This routine should be called as early as possible in
-- each ARINC process body.
-- C declaration:
-- extern int __gnat_install_signal_handlers ();
-- This call is unnecessary on AE 1.1.
private
package OSI renames System.OS_Interface;
function Register_Foreign (T : OSI.Thread_Id) return OSI.STATUS;
-- Create runtime structures necessary for Ada language support for
-- an ARINC process. Called from APEX CREATE routine.
function Reset_Foreign (T : OSI.Thread_Id) return OSI.STATUS;
-- Reset runtime structures upon an AE653 process restart. Called from
-- APEX START routine.
-- When defining the following routines for export in an AE 1.1
-- simulation of AE653, Interfaces.C.int may be used for the
-- parameters of FUNCPTR.
type FUNCPTR is access function (T : OSI.Thread_Id) return OSI.STATUS;
--------------------------------
-- Imported vThreads Routines --
--------------------------------
procedure procCreateHookAdd (createHookFunction : FUNCPTR);
pragma Import (C, procCreateHookAdd, "procCreateHookAdd");
-- Registers task registration routine for AE653
procedure procStartHookAdd (StartHookFunction : FUNCPTR);
pragma Import (C, procStartHookAdd, "procStartHookAdd");
-- Registers task restart routine for AE653
end Interfaces.Vthreads;
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