s-restri.ads, [...]: Mark this package as Preelaborate.

2006-10-31  Arnaud Charlet  <charlet@adacore.com>

	* s-restri.ads, s-restri.adb: Mark this package as Preelaborate.
	Remove elaboration code, now done in the binder.

	* s-rident.ads: Make this unit Preelaborate.
	(No_Restrictions): New constant used to clean up code and follow
	preelaborate constraints.

	* s-stalib.adb: 
	Add System.Restrictions dependence, referenced directly from the
	binder generated file.

From-SVN: r118315

4 files changed, 26 insertions, 97 deletions

diff --git a/gcc/ada/s-restri.adb b/gcc/ada/s-restri.adb
index d7b9525..53dc0f3 100644
--- a/gcc/ada/s-restri.adb
+++ b/gcc/ada/s-restri.adb
@@ -6,7 +6,7 @@
 --                                                                          --
 --                                 B o d y                                  --
 --                                                                          --
---          Copyright (C) 2004-2005, Free Software Foundation, Inc.         --
+--          Copyright (C) 2004-2006, Free Software Foundation, Inc.         --
 --                                                                          --
 -- 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- --
@@ -56,92 +56,4 @@ package body System.Restrictions is
              Run_Time_Restrictions.Violated (No_Tasking);
    end Tasking_Allowed;
 
---  Package elaboration code (acquire restrictions)
-
-begin
-   Acquire_Restrictions : declare
-
-      subtype Big_String is String (Positive);
-      type Big_String_Ptr is access all Big_String;
-
-      RString : Big_String_Ptr;
-      pragma Import (C, RString, "__gl_restrictions");
-
-      P : Natural := 1;
-      --  Pointer to scan string
-
-      C : Character;
-      --  Next character from string
-
-      function Get_Char return Character;
-      --  Get next character from string
-
-      function Get_Natural return Natural;
-      --  Scan out natural value known to be in range, updating P past it
-
-      --------------
-      -- Get_Char --
-      --------------
-
-      function Get_Char return Character is
-      begin
-         P := P + 1;
-         return RString (P - 1);
-      end Get_Char;
-
-      -----------------
-      -- Get_Natural --
-      -----------------
-
-      function Get_Natural return Natural is
-         N : Natural := 0;
-
-      begin
-         while RString (P) in '0' .. '9' loop
-            N := N * 10 + (Character'Pos (Get_Char) - Character'Pos ('0'));
-         end loop;
-
-         return N;
-      end Get_Natural;
-
-   --  Start of processing for Acquire_Restrictions
-
-   begin
-      --  Acquire data corresponding to first R line
-
-      for R in All_Boolean_Restrictions loop
-         C := Get_Char;
-
-         if C = 'v' then
-            Run_Time_Restrictions.Violated (R) := True;
-
-         elsif C = 'r' then
-            Run_Time_Restrictions.Set (R) := True;
-         end if;
-      end loop;
-
-      --  Acquire data corresponding to second R line
-
-      for RP in All_Parameter_Restrictions loop
-
-         --  Acquire restrictions pragma information
-
-         if Get_Char = 'r' then
-            Run_Time_Restrictions.Set (RP) := True;
-            Run_Time_Restrictions.Value (RP) := Get_Natural;
-         end if;
-
-         --  Acquire restrictions violations information
-
-         if Get_Char = 'v' then
-            Run_Time_Restrictions.Violated (RP) := True;
-            Run_Time_Restrictions.Count (RP) := Get_Natural;
-
-            if RString (P) = '+' then
-               Run_Time_Restrictions.Unknown (RP) := True;
-               P := P + 1;
-            end if;
-         end if;
-      end loop;
-   end Acquire_Restrictions;
 end System.Restrictions;
diff --git a/gcc/ada/s-restri.ads b/gcc/ada/s-restri.ads
index 0c9a4e7..d56a19f 100644
--- a/gcc/ada/s-restri.ads
+++ b/gcc/ada/s-restri.ads
@@ -6,7 +6,7 @@
 --                                                                          --
 --                                 S p e c                                  --
 --                                                                          --
---          Copyright (C) 2004-2005, Free Software Foundation, Inc.         --
+--          Copyright (C) 2004-2006, Free Software Foundation, Inc.         --
 --                                                                          --
 -- 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- --
@@ -43,10 +43,15 @@
 with System.Rident;
 
 package System.Restrictions is
+   pragma Preelaborate;
    pragma Discard_Names;
    package Rident is new System.Rident;
 
    Run_Time_Restrictions : Rident.Restrictions_Info;
+   --  Restrictions as set by the user, or detected by the binder.
+   --  Note that a restriction which is both Set and Violated at run-time means
+   --  that the violation was detected as part of the Ada run-time and not
+   --  as part of user code.
 
    ------------------
    -- Subprograms --
@@ -61,7 +66,7 @@ package System.Restrictions is
    function Tasking_Allowed return Boolean;
    pragma Inline (Tasking_Allowed);
    --  Tests to see if tasking operations are allowed by the current
-   --  restrictions settings. For taskikng to be allowed, No_Tasking
+   --  restrictions settings. For tasking to be allowed, No_Tasking
    --  must be False, and Max_Tasks must not be set to zero.
 
 end System.Restrictions;
diff --git a/gcc/ada/s-rident.ads b/gcc/ada/s-rident.ads
index 7d0b2c1..b873b18 100644
--- a/gcc/ada/s-rident.ads
+++ b/gcc/ada/s-rident.ads
@@ -6,7 +6,7 @@
 --                                                                          --
 --                                 S p e c                                  --
 --                                                                          --
---          Copyright (C) 1992-2005, Free Software Foundation, Inc.          --
+--          Copyright (C) 1992-2006, Free Software Foundation, Inc.          --
 --                                                                          --
 -- 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- --
@@ -45,6 +45,7 @@
 
 generic
 package System.Rident is
+   pragma Preelaborate;
 
    --  The following enumeration type defines the set of restriction
    --  identifiers that are implemented in GNAT.
@@ -244,7 +245,7 @@ package System.Rident is
    type Parameter_Flags    is array (All_Parameter_Restrictions) of Boolean;
 
    type Restrictions_Info is record
-      Set : Restriction_Flags := (others => False);
+      Set : Restriction_Flags;
       --  An entry is True in the Set array if a restrictions pragma has
       --  been encountered for the given restriction. If the value is
       --  True for a parameter restriction, then the corresponding entry
@@ -258,20 +259,20 @@ package System.Rident is
       --  specified by any such restrictions pragma. Note that a restrictions
       --  pragma specifying a value greater than Int'Last is simply ignored.
 
-      Violated : Restriction_Flags := (others => False);
+      Violated : Restriction_Flags;
       --  An entry is True in the violations array if the compiler has
       --  detected a violation of the restriction. For a parameter
       --  restriction, the Count and Unknown arrays have additional
       --  information.
 
-      Count : Restriction_Values := (others => 0);
+      Count : Restriction_Values;
       --  If an entry for a parameter restriction is True in Violated,
       --  the corresponding entry in the Count array may record additional
       --  information. If the actual minimum count is known (by taking
       --  maximums, or sums, depending on the restriction), it will be
       --  recorded in this array. If not, then the value will remain zero.
 
-      Unknown : Parameter_Flags := (others => False);
+      Unknown : Parameter_Flags;
       --  If an entry for a parameter restriction is True in Violated,
       --  the corresponding entry in the Unknown array may record additional
       --  information. If the actual count is not known by the compiler (but
@@ -285,6 +286,14 @@ package System.Rident is
       --  that the actual violation count is at least 3 but might be higher.
    end record;
 
+   No_Restrictions : constant Restrictions_Info :=
+     (Set      => (others => False),
+      Value    => (others => 0),
+      Violated => (others => False),
+      Count    => (others => 0),
+      Unknown  => (others => False));
+   --  Used to initialize Restrictions_Info variables
+
    ----------------------------------
    -- Profile Definitions and Data --
    ----------------------------------
diff --git a/gcc/ada/s-stalib.adb b/gcc/ada/s-stalib.adb
index d1a0a6f..1fab697 100644
--- a/gcc/ada/s-stalib.adb
+++ b/gcc/ada/s-stalib.adb
@@ -6,7 +6,7 @@
 --                                                                          --
 --                                 B o d y                                  --
 --                                                                          --
---          Copyright (C) 1995-2005 Free Software Foundation, Inc.          --
+--          Copyright (C) 1995-2006 Free Software Foundation, Inc.          --
 --                                                                          --
 -- 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- --
@@ -56,6 +56,9 @@ with System.Memory;
 --  must always be present in a build, even if no unit has a direct with
 --  of this unit.
 
+with System.Restrictions;
+--  Referenced directly from the binder generated file.
+
 pragma Warnings (On);
 
 package body System.Standard_Library is