2005-01-27 Laurent GUERBY <laurent@guerby.net>

	* Makefile.in: Rename GNAT RTEMS specific files.
	* 5rtpopsp.adb, 4rintnam.ads, 5rosinte.adb,
 	5rosinte.ads, 5rparame.adb: Replaced by files below.
	* s-tpopsp-rtems.adb, a-intman-rtems.ads, s-osinte-rtems.adb,
	s-osinte-rtems.ads, s-parame-rtems.adb: Replace files above.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@94319 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 115 insertions, 0 deletions

diff --git a/gcc/ada/s-tpopsp-rtems.adb b/gcc/ada/s-tpopsp-rtems.adb
new file mode 100644
index 00000000000..6c83352cd62
--- /dev/null
+++ b/gcc/ada/s-tpopsp-rtems.adb
@@ -0,0 +1,115 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                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             --
+--                                                                          --
+-- 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. 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 contexted switch 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;