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Diffstat (limited to 'gcc-4.4.3/gcc/ada/s-tpopsp-rtems.adb')
| -rw-r--r-- | gcc-4.4.3/gcc/ada/s-tpopsp-rtems.adb | 116 |
1 files changed, 0 insertions, 116 deletions
diff --git a/gcc-4.4.3/gcc/ada/s-tpopsp-rtems.adb b/gcc-4.4.3/gcc/ada/s-tpopsp-rtems.adb deleted file mode 100644 index 81afc79cb..000000000 --- a/gcc-4.4.3/gcc/ada/s-tpopsp-rtems.adb +++ /dev/null @@ -1,116 +0,0 @@ ------------------------------------------------------------------------------- --- -- --- GNU ADA RUN-TIME LIBRARY (GNARL) COMPONENTS -- --- -- --- S Y S T E M . T A S K _ P R I M I T I V E S . O P E R A T I O N S . -- --- S P E C I F I C -- --- -- --- B o d y -- --- -- --- $Revision: 1.2 $ --- -- --- Copyright (C) 1991-2003, Florida State University -- --- Copyright (C) 2008, 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, 51 Franklin Street, Fifth Floor, -- --- Boston, MA 02110-1301, 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. It is -- --- now maintained by Ada Core Technologies Inc. in cooperation with Florida -- --- State University (http://www.gnat.com). -- --- -- ------------------------------------------------------------------------------- - --- This is a RTEMS version of this package which uses a special --- variable for Ada self which is context switched implicitly by RTEMS. --- --- This is the same as the POSIX version except that an RTEMS variable --- is used instead of a POSIX key. - -separate (System.Task_Primitives.Operations) -package body Specific is - - -- The following gives the Ada run-time direct access to a variable - -- context switched by RTEMS at the lowest level. - - RTEMS_Ada_Self : System.Address; - pragma Import (C, RTEMS_Ada_Self, "rtems_ada_self"); - - ---------------- - -- Initialize -- - ---------------- - - procedure Initialize (Environment_Task : Task_Id) is - pragma Warnings (Off, Environment_Task); - - begin - ATCB_Key := No_Key; - RTEMS_Ada_Self := To_Address (Environment_Task); - end Initialize; - - ------------------- - -- Is_Valid_Task -- - ------------------- - - function Is_Valid_Task return Boolean is - begin - return RTEMS_Ada_Self /= System.Null_Address; - end Is_Valid_Task; - - --------- - -- Set -- - --------- - - procedure Set (Self_Id : Task_Id) is - begin - RTEMS_Ada_Self := To_Address (Self_Id); - end Set; - - ---------- - -- Self -- - ---------- - - -- To make Ada tasks and C threads interoperate better, we have added some - -- functionality to Self. Suppose a C main program (with threads) calls an - -- Ada procedure and the Ada procedure calls the tasking runtime system. - -- Eventually, a call will be made to self. Since the call is not coming - -- from an Ada task, there will be no corresponding ATCB. - - -- What we do in Self is to catch references that do not come from - -- recognized Ada tasks, and create an ATCB for the calling thread. - - -- The new ATCB will be "detached" from the normal Ada task master - -- hierarchy, much like the existing implicitly created signal-server - -- tasks. - - function Self return Task_Id is - Result : System.Address; - - begin - Result := RTEMS_Ada_Self; - - -- If the key value is Null, then it is a non-Ada task. - - if Result /= System.Null_Address then - return To_Task_Id (Result); - else - return Register_Foreign_Thread; - end if; - end Self; - -end Specific; |