-- --
-- B o d y --
-- --
--- Copyright (C) 1997-2002, Free Software Foundation, Inc. --
+-- Copyright (C) 1997-2009, 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- --
--- ware Foundation; either version 2, or (at your option) any later ver- --
+-- ware Foundation; either version 3, 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, 59 Temple Place - Suite 330, Boston, --
--- MA 02111-1307, USA. --
+-- or FITNESS FOR A PARTICULAR PURPOSE. --
-- --
--- 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. --
+-- As a special exception under Section 7 of GPL version 3, you are granted --
+-- additional permissions described in the GCC Runtime Library Exception, --
+-- version 3.1, as published by the Free Software Foundation. --
+-- --
+-- You should have received a copy of the GNU General Public License and --
+-- a copy of the GCC Runtime Library Exception along with this program; --
+-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
+-- <http://www.gnu.org/licenses/>. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
--- This is an Alpha/VMS package.
+-- This is an Alpha/VMS package
with System.HTable;
pragma Elaborate_All (System.HTable);
package body System.VMS_Exception_Table is
- use System.Standard_Library;
+ use type SSL.Exception_Code;
type HTable_Headers is range 1 .. 37;
-- Ada exception.
type Exception_Code_Data is record
- Code : Natural;
- Except : Exception_Data_Ptr;
+ Code : SSL.Exception_Code;
+ Except : SSL.Exception_Data_Ptr;
HTable_Ptr : Exception_Code_Data_Ptr;
end record;
function Get_HT_Link (T : Exception_Code_Data_Ptr)
return Exception_Code_Data_Ptr;
- function Hash (F : Natural) return HTable_Headers;
- function Get_Key (T : Exception_Code_Data_Ptr) return Natural;
+ function Hash (F : SSL.Exception_Code) return HTable_Headers;
+ function Get_Key (T : Exception_Code_Data_Ptr) return SSL.Exception_Code;
package Exception_Code_HTable is new System.HTable.Static_HTable (
Header_Num => HTable_Headers,
Null_Ptr => null,
Set_Next => Set_HT_Link,
Next => Get_HT_Link,
- Key => Natural,
+ Key => SSL.Exception_Code,
Get_Key => Get_Key,
Hash => Hash,
Equal => "=");
+ ------------------
+ -- Base_Code_In --
+ ------------------
+
+ function Base_Code_In
+ (Code : SSL.Exception_Code) return SSL.Exception_Code
+ is
+ begin
+ return Code and not 2#0111#;
+ end Base_Code_In;
+
---------------------
-- Coded_Exception --
---------------------
- function Coded_Exception (X : Natural) return Exception_Data_Ptr is
+ function Coded_Exception
+ (X : SSL.Exception_Code) return SSL.Exception_Data_Ptr
+ is
Res : Exception_Code_Data_Ptr;
begin
-- Get_HT_Link --
-----------------
- function Get_HT_Link (T : Exception_Code_Data_Ptr)
- return Exception_Code_Data_Ptr is
+ function Get_HT_Link
+ (T : Exception_Code_Data_Ptr) return Exception_Code_Data_Ptr
+ is
begin
return T.HTable_Ptr;
end Get_HT_Link;
-- Get_Key --
-------------
- function Get_Key (T : Exception_Code_Data_Ptr) return Natural is
+ function Get_Key (T : Exception_Code_Data_Ptr)
+ return SSL.Exception_Code
+ is
begin
return T.Code;
end Get_Key;
-- Hash --
----------
- function Hash (F : Natural) return HTable_Headers is
+ function Hash
+ (F : SSL.Exception_Code) return HTable_Headers
+ is
+ Headers_Magnitude : constant SSL.Exception_Code :=
+ SSL.Exception_Code (HTable_Headers'Last - HTable_Headers'First + 1);
+
begin
- return HTable_Headers
- (F mod Natural (HTable_Headers'Last - HTable_Headers'First + 1) + 1);
+ return HTable_Headers (F mod Headers_Magnitude + 1);
end Hash;
----------------------------
-- Register_VMS_Exception --
----------------------------
- procedure Register_VMS_Exception (Code : Integer) is
- Excode : constant Integer := (Code / 8) * 8;
- -- Mask off lower 3 bits which are the severity
+ procedure Register_VMS_Exception
+ (Code : SSL.Exception_Code;
+ E : SSL.Exception_Data_Ptr)
+ is
+ -- We bind the exception data with the base code found in the
+ -- input value, that is with the severity bits masked off.
+
+ Excode : constant SSL.Exception_Code := Base_Code_In (Code);
begin
- -- This allocates an empty exception that gets filled in by
- -- __gnat_error_handler when the exception is raised. Allocating
- -- it here prevents having to allocate it each time the exception
- -- is raised.
+ -- The exception data registered here is mostly filled prior to this
+ -- call and by __gnat_error_handler when the exception is raised. We
+ -- still need to fill a couple of components for exceptions that will
+ -- be used as propagation filters (exception data pointer registered
+ -- as choices in the unwind tables): in some import/export cases, the
+ -- exception pointers for the choice and the propagated occurrence may
+ -- indeed be different for a single import code, and the personality
+ -- routine attempts to match the import codes in this case.
+
+ E.Lang := 'V';
+ E.Import_Code := Excode;
if Exception_Code_HTable.Get (Excode) = null then
- Exception_Code_HTable.Set
- (new Exception_Code_Data'
- (Excode,
- new Exception_Data'
- (Not_Handled_By_Others => False,
- Lang => 'V',
- Name_Length => 0,
- Full_Name => null,
- HTable_Ptr => null,
- Import_Code => 0,
- Raise_Hook => null),
- null));
+ Exception_Code_HTable.Set (new Exception_Code_Data'(Excode, E, null));
end if;
end Register_VMS_Exception;
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