2008-02-11 Joel Sherrill <joel.sherrill@oarcorp.com>

	PR ada/35143
	* env.c: Add __rtems__ to if defined.
	* s-osinte-rtems.adb: Add To_Target_Priority.  Fix formatting.
	* s-osinte-rtems.ads: Add To_Target_Priority prototype and
	PTHREAD_SCOPE_PROCESS/PTHREAD_SCOPE_SYSTEM constants.  Add
	pragma Convention as required.
	* gsocket.h: Make compile in and out of RTS.
	* Makefile.in: Add system-rtems.ads.  Build DEC extensions.
	Use g-soccon-rtems.ads.
	* g-soccon-rtems.ads, system-rtems.ads: New files.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@132294 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 168 insertions, 0 deletions

diff --git a/gcc/ada/system-rtems.ads b/gcc/ada/system-rtems.ads
new file mode 100644
index 00000000000..95338f52d12
--- /dev/null
+++ b/gcc/ada/system-rtems.ads
@@ -0,0 +1,168 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                        GNAT RUN-TIME COMPONENTS                          --
+--                                                                          --
+--                               S Y S T E M                                --
+--                                                                          --
+--                                 S p e c                                  --
+--                            (Compiler Version)                            --
+--                                                                          --
+--          Copyright (C) 1992-2008 Free Software Foundation, Inc.          --
+--                                                                          --
+-- This specification is derived from the Ada Reference Manual for use with --
+-- GNAT. The copyright notice above, and the license provisions that follow --
+-- apply solely to the  contents of the part following the private keyword. --
+--                                                                          --
+-- GNAT 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.  GNAT 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 GNAT;  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.                                      --
+--                                                                          --
+-- GNAT was originally developed  by the GNAT team at  New York University. --
+-- Extensive contributions were provided by Ada Core Technologies Inc.      --
+--                                                                          --
+------------------------------------------------------------------------------
+
+--  This version of System is a RTEMS version that is used in building
+--  the compiler.  This is based as closely as possible on the generic
+--  version with the following exceptions:
+--      + priority definitions
+
+package System is
+   pragma Pure;
+   --  Note that we take advantage of the implementation permission to make
+   --  this unit Pure instead of Preelaborable; see RM 13.7.1(15). In Ada
+   --  2005, this is Pure in any case (AI-362).
+
+   type Name is (SYSTEM_NAME_GNAT);
+   System_Name : constant Name := SYSTEM_NAME_GNAT;
+
+   --  System-Dependent Named Numbers
+
+   Min_Int               : constant := Long_Long_Integer'First;
+   Max_Int               : constant := Long_Long_Integer'Last;
+
+   Max_Binary_Modulus    : constant := 2 ** Long_Long_Integer'Size;
+   Max_Nonbinary_Modulus : constant := Integer'Last;
+
+   Max_Base_Digits       : constant := Long_Long_Float'Digits;
+   Max_Digits            : constant := Long_Long_Float'Digits;
+
+   Max_Mantissa          : constant := 63;
+   Fine_Delta            : constant := 2.0 ** (-Max_Mantissa);
+
+   Tick                  : constant := 0.01;
+
+   --  Storage-related Declarations
+
+   type Address is private;
+   Null_Address : constant Address;
+
+   Storage_Unit : constant := Standard'Storage_Unit;
+   Word_Size    : constant := Standard'Word_Size;
+   Memory_Size  : constant := 2 ** Standard'Address_Size;
+
+   --  Address comparison
+
+   function "<"  (Left, Right : Address) return Boolean;
+   function "<=" (Left, Right : Address) return Boolean;
+   function ">"  (Left, Right : Address) return Boolean;
+   function ">=" (Left, Right : Address) return Boolean;
+   function "="  (Left, Right : Address) return Boolean;
+
+   pragma Import (Intrinsic, "<");
+   pragma Import (Intrinsic, "<=");
+   pragma Import (Intrinsic, ">");
+   pragma Import (Intrinsic, ">=");
+   pragma Import (Intrinsic, "=");
+
+   --  Other System-Dependent Declarations
+
+   type Bit_Order is (High_Order_First, Low_Order_First);
+   Default_Bit_Order : constant Bit_Order :=
+                         Bit_Order'Val (Standard'Default_Bit_Order);
+   pragma Warnings (Off, Default_Bit_Order); -- kill constant condition warning
+
+   --  Priority-related Declarations (RM D.1)
+
+   --  RTEMS POSIX threads support 256 priority levels with 255 being
+   --  logically the most important. Levels 0 and 255 are reserved.
+   --
+   --  255        is reserved for RTEMS system tasks
+   --  247 - 254  correspond to hardware interrupt levels 0 .. 7
+   --  246        is a catchall default "interrupt" priority for signals,
+   --             allowing higher priority than normal tasks, but lower than
+   --             hardware priority levels.  Protected Object ceilings can
+   --             override these values.
+   --  245        is used by the Interrupt_Manager task
+   --  0          is reserved for the RTEMS IDLE task and really should not
+   --             be accessible from Ada but GNAT initializes
+   --             Current_Priority to 0 so it must be valid
+
+   Max_Priority           : constant Positive := 244;
+   Max_Interrupt_Priority : constant Positive := 254;
+
+   subtype Any_Priority       is Integer      range   0 .. 254;
+   subtype Priority           is Any_Priority range   0 .. 244;
+   subtype Interrupt_Priority is Any_Priority range 245 .. 254;
+
+   Default_Priority : constant Priority := 122;
+
+private
+
+   type Address is mod Memory_Size;
+   Null_Address : constant Address := 0;
+
+   --------------------------------------
+   -- System Implementation Parameters --
+   --------------------------------------
+
+   --  These parameters provide information about the target that is used
+   --  by the compiler. They are in the private part of System, where they
+   --  can be accessed using the special circuitry in the Targparm unit
+   --  whose source should be consulted for more detailed descriptions
+   --  of the individual switch values.
+
+   Backend_Divide_Checks     : constant Boolean := False;
+   Backend_Overflow_Checks   : constant Boolean := False;
+   Command_Line_Args         : constant Boolean := True;
+   Configurable_Run_Time     : constant Boolean := False;
+   Denorm                    : constant Boolean := True;
+   Duration_32_Bits          : constant Boolean := False;
+   Exit_Status_Supported     : constant Boolean := True;
+   Fractional_Fixed_Ops      : constant Boolean := False;
+   Frontend_Layout           : constant Boolean := False;
+   Machine_Overflows         : constant Boolean := False;
+   Machine_Rounds            : constant Boolean := True;
+   Preallocated_Stacks       : constant Boolean := False;
+   Signed_Zeros              : constant Boolean := True;
+   Stack_Check_Default       : constant Boolean := False;
+   Stack_Check_Probes        : constant Boolean := False;
+   Support_64_Bit_Divides    : constant Boolean := True;
+   Support_Aggregates        : constant Boolean := True;
+   Support_Composite_Assign  : constant Boolean := True;
+   Support_Composite_Compare : constant Boolean := True;
+   Support_Long_Shifts       : constant Boolean := True;
+   Suppress_Standard_Library : constant Boolean := False;
+   Use_Ada_Main_Program_Name : constant Boolean := False;
+   ZCX_By_Default            : constant Boolean := False;
+   GCC_ZCX_Support           : constant Boolean := True;
+
+   --  One would think you did not have to define this but
+   --  it is used in the run-time.
+   OpenVMS                   : constant Boolean := False;
+
+end System;