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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;