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Diffstat (limited to 'gcc/ada/i-vthrea.ads')
| -rw-r--r-- | gcc/ada/i-vthrea.ads | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/gcc/ada/i-vthrea.ads b/gcc/ada/i-vthrea.ads new file mode 100644 index 00000000000..d4a79757cfe --- /dev/null +++ b/gcc/ada/i-vthrea.ads @@ -0,0 +1,93 @@ +------------------------------------------------------------------------------ +-- -- +-- 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; |