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

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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
This commit is contained in:
Arnaud Charlet 2006-10-31 19:11:19 +01:00
parent 39485a7b0c
commit f7753fbb7e
4 changed files with 26 additions and 97 deletions
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90
gcc/ada/s-restri.adb
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@ -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;

9
gcc/ada/s-restri.ads
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@ -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;

19
gcc/ada/s-rident.ads
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@ -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 --
----------------------------------

5
gcc/ada/s-stalib.adb
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@ -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