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+------------------------------------------------------------------------------
+-- --
+-- GNAT COMPILER COMPONENTS --
+-- --
+-- S Y S T E M . A U X _ D E C --
+-- --
+-- S p e c --
+-- --
+-- Copyright (C) 1996-2011, 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 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. --
+-- --
+-- 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 package contains definitions that are designed to be compatible
+-- with the extra definitions in package System for DEC Ada implementations.
+
+-- These definitions can be used directly by withing this package, or merged
+-- with System using pragma Extend_System (Aux_DEC)
+
+with Ada.Unchecked_Conversion;
+
+package System.Aux_DEC is
+ pragma Preelaborate;
+
+ subtype Short_Address is Address;
+ -- In some versions of System.Aux_DEC, notably that for VMS on IA64, there
+ -- are two address types (64-bit and 32-bit), and the name Short_Address
+ -- is used for the short address form. To avoid difficulties (in regression
+ -- tests and elsewhere) with units that reference Short_Address, it is
+ -- provided for other targets as a synonym for the normal Address type,
+ -- and, as in the case where the lengths are different, Address and
+ -- Short_Address can be freely inter-converted.
+
+ type Integer_8 is range -2 ** (8 - 1) .. +2 ** (8 - 1) - 1;
+ for Integer_8'Size use 8;
+
+ type Integer_16 is range -2 ** (16 - 1) .. +2 ** (16 - 1) - 1;
+ for Integer_16'Size use 16;
+
+ type Integer_32 is range -2 ** (32 - 1) .. +2 ** (32 - 1) - 1;
+ for Integer_32'Size use 32;
+
+ type Integer_64 is range -2 ** (64 - 1) .. +2 ** (64 - 1) - 1;
+ for Integer_64'Size use 64;
+
+ type Integer_8_Array is array (Integer range <>) of Integer_8;
+ type Integer_16_Array is array (Integer range <>) of Integer_16;
+ type Integer_32_Array is array (Integer range <>) of Integer_32;
+ type Integer_64_Array is array (Integer range <>) of Integer_64;
+ -- These array types are not in all versions of DEC System, and in fact it
+ -- is not quite clear why they are in some and not others, but since they
+ -- definitely appear in some versions, we include them unconditionally.
+
+ type Largest_Integer is range Min_Int .. Max_Int;
+
+ type AST_Handler is private;
+
+ No_AST_Handler : constant AST_Handler;
+
+ type Type_Class is
+ (Type_Class_Enumeration,
+ Type_Class_Integer,
+ Type_Class_Fixed_Point,
+ Type_Class_Floating_Point,
+ Type_Class_Array,
+ Type_Class_Record,
+ Type_Class_Access,
+ Type_Class_Task, -- also in Ada 95 protected
+ Type_Class_Address);
+
+ function "not" (Left : Largest_Integer) return Largest_Integer;
+ function "and" (Left, Right : Largest_Integer) return Largest_Integer;
+ function "or" (Left, Right : Largest_Integer) return Largest_Integer;
+ function "xor" (Left, Right : Largest_Integer) return Largest_Integer;
+
+ Address_Zero : constant Address;
+ No_Addr : constant Address;
+ Address_Size : constant := Standard'Address_Size;
+ Short_Address_Size : constant := Standard'Address_Size;
+
+ function "+" (Left : Address; Right : Integer) return Address;
+ function "+" (Left : Integer; Right : Address) return Address;
+ function "-" (Left : Address; Right : Address) return Integer;
+ function "-" (Left : Address; Right : Integer) return Address;
+
+ generic
+ type Target is private;
+ function Fetch_From_Address (A : Address) return Target;
+
+ generic
+ type Target is private;
+ procedure Assign_To_Address (A : Address; T : Target);
+
+ -- Floating point type declarations for VAX floating point data types
+
+ pragma Warnings (Off);
+ -- ??? needs comment
+
+ type F_Float is digits 6;
+ pragma Float_Representation (VAX_Float, F_Float);
+
+ type D_Float is digits 9;
+ pragma Float_Representation (Vax_Float, D_Float);
+
+ type G_Float is digits 15;
+ pragma Float_Representation (Vax_Float, G_Float);
+
+ -- Floating point type declarations for IEEE floating point data types
+
+ type IEEE_Single_Float is digits 6;
+ pragma Float_Representation (IEEE_Float, IEEE_Single_Float);
+
+ type IEEE_Double_Float is digits 15;
+ pragma Float_Representation (IEEE_Float, IEEE_Double_Float);
+
+ pragma Warnings (On);
+
+ Non_Ada_Error : exception;
+
+ -- Hardware-oriented types and functions
+
+ type Bit_Array is array (Integer range <>) of Boolean;
+ pragma Pack (Bit_Array);
+
+ subtype Bit_Array_8 is Bit_Array (0 .. 7);
+ subtype Bit_Array_16 is Bit_Array (0 .. 15);
+ subtype Bit_Array_32 is Bit_Array (0 .. 31);
+ subtype Bit_Array_64 is Bit_Array (0 .. 63);
+
+ type Unsigned_Byte is range 0 .. 255;
+ for Unsigned_Byte'Size use 8;
+
+ function "not" (Left : Unsigned_Byte) return Unsigned_Byte;
+ function "and" (Left, Right : Unsigned_Byte) return Unsigned_Byte;
+ function "or" (Left, Right : Unsigned_Byte) return Unsigned_Byte;
+ function "xor" (Left, Right : Unsigned_Byte) return Unsigned_Byte;
+
+ function To_Unsigned_Byte (X : Bit_Array_8) return Unsigned_Byte;
+ function To_Bit_Array_8 (X : Unsigned_Byte) return Bit_Array_8;
+
+ type Unsigned_Byte_Array is array (Integer range <>) of Unsigned_Byte;
+
+ type Unsigned_Word is range 0 .. 65535;
+ for Unsigned_Word'Size use 16;
+
+ function "not" (Left : Unsigned_Word) return Unsigned_Word;
+ function "and" (Left, Right : Unsigned_Word) return Unsigned_Word;
+ function "or" (Left, Right : Unsigned_Word) return Unsigned_Word;
+ function "xor" (Left, Right : Unsigned_Word) return Unsigned_Word;
+
+ function To_Unsigned_Word (X : Bit_Array_16) return Unsigned_Word;
+ function To_Bit_Array_16 (X : Unsigned_Word) return Bit_Array_16;
+
+ type Unsigned_Word_Array is array (Integer range <>) of Unsigned_Word;
+
+ type Unsigned_Longword is range -2_147_483_648 .. 2_147_483_647;
+ for Unsigned_Longword'Size use 32;
+
+ function "not" (Left : Unsigned_Longword) return Unsigned_Longword;
+ function "and" (Left, Right : Unsigned_Longword) return Unsigned_Longword;
+ function "or" (Left, Right : Unsigned_Longword) return Unsigned_Longword;
+ function "xor" (Left, Right : Unsigned_Longword) return Unsigned_Longword;
+
+ function To_Unsigned_Longword (X : Bit_Array_32) return Unsigned_Longword;
+ function To_Bit_Array_32 (X : Unsigned_Longword) return Bit_Array_32;
+
+ type Unsigned_Longword_Array is
+ array (Integer range <>) of Unsigned_Longword;
+
+ type Unsigned_32 is range 0 .. 4_294_967_295;
+ for Unsigned_32'Size use 32;
+
+ function "not" (Left : Unsigned_32) return Unsigned_32;
+ function "and" (Left, Right : Unsigned_32) return Unsigned_32;
+ function "or" (Left, Right : Unsigned_32) return Unsigned_32;
+ function "xor" (Left, Right : Unsigned_32) return Unsigned_32;
+
+ function To_Unsigned_32 (X : Bit_Array_32) return Unsigned_32;
+ function To_Bit_Array_32 (X : Unsigned_32) return Bit_Array_32;
+
+ type Unsigned_Quadword is record
+ L0 : Unsigned_Longword;
+ L1 : Unsigned_Longword;
+ end record;
+
+ for Unsigned_Quadword'Size use 64;
+ for Unsigned_Quadword'Alignment use
+ Integer'Min (8, Standard'Maximum_Alignment);
+
+ function "not" (Left : Unsigned_Quadword) return Unsigned_Quadword;
+ function "and" (Left, Right : Unsigned_Quadword) return Unsigned_Quadword;
+ function "or" (Left, Right : Unsigned_Quadword) return Unsigned_Quadword;
+ function "xor" (Left, Right : Unsigned_Quadword) return Unsigned_Quadword;
+
+ function To_Unsigned_Quadword (X : Bit_Array_64) return Unsigned_Quadword;
+ function To_Bit_Array_64 (X : Unsigned_Quadword) return Bit_Array_64;
+
+ type Unsigned_Quadword_Array is
+ array (Integer range <>) of Unsigned_Quadword;
+
+ function To_Address (X : Integer) return Address;
+ pragma Pure_Function (To_Address);
+
+ function To_Address_Long (X : Unsigned_Longword) return Address;
+ pragma Pure_Function (To_Address_Long);
+
+ function To_Integer (X : Address) return Integer;
+
+ function To_Unsigned_Longword (X : Address) return Unsigned_Longword;
+ function To_Unsigned_Longword (X : AST_Handler) return Unsigned_Longword;
+
+ -- Conventional names for static subtypes of type UNSIGNED_LONGWORD
+
+ subtype Unsigned_1 is Unsigned_Longword range 0 .. 2** 1-1;
+ subtype Unsigned_2 is Unsigned_Longword range 0 .. 2** 2-1;
+ subtype Unsigned_3 is Unsigned_Longword range 0 .. 2** 3-1;
+ subtype Unsigned_4 is Unsigned_Longword range 0 .. 2** 4-1;
+ subtype Unsigned_5 is Unsigned_Longword range 0 .. 2** 5-1;
+ subtype Unsigned_6 is Unsigned_Longword range 0 .. 2** 6-1;
+ subtype Unsigned_7 is Unsigned_Longword range 0 .. 2** 7-1;
+ subtype Unsigned_8 is Unsigned_Longword range 0 .. 2** 8-1;
+ subtype Unsigned_9 is Unsigned_Longword range 0 .. 2** 9-1;
+ subtype Unsigned_10 is Unsigned_Longword range 0 .. 2**10-1;
+ subtype Unsigned_11 is Unsigned_Longword range 0 .. 2**11-1;
+ subtype Unsigned_12 is Unsigned_Longword range 0 .. 2**12-1;
+ subtype Unsigned_13 is Unsigned_Longword range 0 .. 2**13-1;
+ subtype Unsigned_14 is Unsigned_Longword range 0 .. 2**14-1;
+ subtype Unsigned_15 is Unsigned_Longword range 0 .. 2**15-1;
+ subtype Unsigned_16 is Unsigned_Longword range 0 .. 2**16-1;
+ subtype Unsigned_17 is Unsigned_Longword range 0 .. 2**17-1;
+ subtype Unsigned_18 is Unsigned_Longword range 0 .. 2**18-1;
+ subtype Unsigned_19 is Unsigned_Longword range 0 .. 2**19-1;
+ subtype Unsigned_20 is Unsigned_Longword range 0 .. 2**20-1;
+ subtype Unsigned_21 is Unsigned_Longword range 0 .. 2**21-1;
+ subtype Unsigned_22 is Unsigned_Longword range 0 .. 2**22-1;
+ subtype Unsigned_23 is Unsigned_Longword range 0 .. 2**23-1;
+ subtype Unsigned_24 is Unsigned_Longword range 0 .. 2**24-1;
+ subtype Unsigned_25 is Unsigned_Longword range 0 .. 2**25-1;
+ subtype Unsigned_26 is Unsigned_Longword range 0 .. 2**26-1;
+ subtype Unsigned_27 is Unsigned_Longword range 0 .. 2**27-1;
+ subtype Unsigned_28 is Unsigned_Longword range 0 .. 2**28-1;
+ subtype Unsigned_29 is Unsigned_Longword range 0 .. 2**29-1;
+ subtype Unsigned_30 is Unsigned_Longword range 0 .. 2**30-1;
+ subtype Unsigned_31 is Unsigned_Longword range 0 .. 2**31-1;
+
+ -- Function for obtaining global symbol values
+
+ function Import_Value (Symbol : String) return Unsigned_Longword;
+ function Import_Address (Symbol : String) return Address;
+ function Import_Largest_Value (Symbol : String) return Largest_Integer;
+
+ pragma Import (Intrinsic, Import_Value);
+ pragma Import (Intrinsic, Import_Address);
+ pragma Import (Intrinsic, Import_Largest_Value);
+
+ -- For the following declarations, note that the declaration without a
+ -- Retry_Count parameter means to retry infinitely. A value of zero for
+ -- the Retry_Count parameter means do not retry.
+
+ -- Interlocked-instruction procedures
+
+ procedure Clear_Interlocked
+ (Bit : in out Boolean;
+ Old_Value : out Boolean);
+
+ procedure Set_Interlocked
+ (Bit : in out Boolean;
+ Old_Value : out Boolean);
+
+ type Aligned_Word is record
+ Value : Short_Integer;
+ end record;
+
+ for Aligned_Word'Alignment use Integer'Min (2, Standard'Maximum_Alignment);
+
+ procedure Clear_Interlocked
+ (Bit : in out Boolean;
+ Old_Value : out Boolean;
+ Retry_Count : Natural;
+ Success_Flag : out Boolean);
+
+ procedure Set_Interlocked
+ (Bit : in out Boolean;
+ Old_Value : out Boolean;
+ Retry_Count : Natural;
+ Success_Flag : out Boolean);
+
+ procedure Add_Interlocked
+ (Addend : Short_Integer;
+ Augend : in out Aligned_Word;
+ Sign : out Integer);
+
+ type Aligned_Integer is record
+ Value : Integer;
+ end record;
+
+ for Aligned_Integer'Alignment use
+ Integer'Min (4, Standard'Maximum_Alignment);
+
+ type Aligned_Long_Integer is record
+ Value : Long_Integer;
+ end record;
+
+ for Aligned_Long_Integer'Alignment use
+ Integer'Min (8, Standard'Maximum_Alignment);
+
+ -- For the following declarations, note that the declaration without a
+ -- Retry_Count parameter mean to retry infinitely. A value of zero for
+ -- the Retry_Count means do not retry.
+
+ procedure Add_Atomic
+ (To : in out Aligned_Integer;
+ Amount : Integer);
+
+ procedure Add_Atomic
+ (To : in out Aligned_Integer;
+ Amount : Integer;
+ Retry_Count : Natural;
+ Old_Value : out Integer;
+ Success_Flag : out Boolean);
+
+ procedure Add_Atomic
+ (To : in out Aligned_Long_Integer;
+ Amount : Long_Integer);
+
+ procedure Add_Atomic
+ (To : in out Aligned_Long_Integer;
+ Amount : Long_Integer;
+ Retry_Count : Natural;
+ Old_Value : out Long_Integer;
+ Success_Flag : out Boolean);
+
+ procedure And_Atomic
+ (To : in out Aligned_Integer;
+ From : Integer);
+
+ procedure And_Atomic
+ (To : in out Aligned_Integer;
+ From : Integer;
+ Retry_Count : Natural;
+ Old_Value : out Integer;
+ Success_Flag : out Boolean);
+
+ procedure And_Atomic
+ (To : in out Aligned_Long_Integer;
+ From : Long_Integer);
+
+ procedure And_Atomic
+ (To : in out Aligned_Long_Integer;
+ From : Long_Integer;
+ Retry_Count : Natural;
+ Old_Value : out Long_Integer;
+ Success_Flag : out Boolean);
+
+ procedure Or_Atomic
+ (To : in out Aligned_Integer;
+ From : Integer);
+
+ procedure Or_Atomic
+ (To : in out Aligned_Integer;
+ From : Integer;
+ Retry_Count : Natural;
+ Old_Value : out Integer;
+ Success_Flag : out Boolean);
+
+ procedure Or_Atomic
+ (To : in out Aligned_Long_Integer;
+ From : Long_Integer);
+
+ procedure Or_Atomic
+ (To : in out Aligned_Long_Integer;
+ From : Long_Integer;
+ Retry_Count : Natural;
+ Old_Value : out Long_Integer;
+ Success_Flag : out Boolean);
+
+ type Insq_Status is (Fail_No_Lock, OK_Not_First, OK_First);
+
+ for Insq_Status use
+ (Fail_No_Lock => -1,
+ OK_Not_First => 0,
+ OK_First => +1);
+
+ type Remq_Status is (
+ Fail_No_Lock,
+ Fail_Was_Empty,
+ OK_Not_Empty,
+ OK_Empty);
+
+ for Remq_Status use
+ (Fail_No_Lock => -1,
+ Fail_Was_Empty => 0,
+ OK_Not_Empty => +1,
+ OK_Empty => +2);
+
+ procedure Insqhi
+ (Item : Address;
+ Header : Address;
+ Status : out Insq_Status);
+
+ procedure Remqhi
+ (Header : Address;
+ Item : out Address;
+ Status : out Remq_Status);
+
+ procedure Insqti
+ (Item : Address;
+ Header : Address;
+ Status : out Insq_Status);
+
+ procedure Remqti
+ (Header : Address;
+ Item : out Address;
+ Status : out Remq_Status);
+
+private
+
+ Address_Zero : constant Address := Null_Address;
+ No_Addr : constant Address := Null_Address;
+
+ -- An AST_Handler value is from a typing point of view simply a pointer
+ -- to a procedure taking a single 64 bit parameter. However, this
+ -- is a bit misleading, because the data that this pointer references is
+ -- highly stylized. See body of System.AST_Handling for full details.
+
+ type AST_Handler is access procedure (Param : Long_Integer);
+ No_AST_Handler : constant AST_Handler := null;
+
+ -- Other operators have incorrect profiles. It would be nice to make
+ -- them intrinsic, since the backend can handle them, but the front
+ -- end is not prepared to deal with them, so at least inline them.
+
+ pragma Inline_Always ("+");
+ pragma Inline_Always ("-");
+ pragma Inline_Always ("not");
+ pragma Inline_Always ("and");
+ pragma Inline_Always ("or");
+ pragma Inline_Always ("xor");
+
+ -- Other inlined subprograms
+
+ pragma Inline_Always (Fetch_From_Address);
+ pragma Inline_Always (Assign_To_Address);
+
+ -- Synchronization related subprograms. Mechanism is explicitly set
+ -- so that the critical parameters are passed by reference.
+ -- Without this, the parameters are passed by copy, creating load/store
+ -- race conditions. We also inline them, since this seems more in the
+ -- spirit of the original (hardware intrinsic) routines.
+
+ pragma Export_Procedure
+ (Clear_Interlocked,
+ External => "system__aux_dec__clear_interlocked__1",
+ Parameter_Types => (Boolean, Boolean),
+ Mechanism => (Reference, Reference));
+ pragma Export_Procedure
+ (Clear_Interlocked,
+ External => "system__aux_dec__clear_interlocked__2",
+ Parameter_Types => (Boolean, Boolean, Natural, Boolean),
+ Mechanism => (Reference, Reference, Value, Reference));
+ pragma Inline_Always (Clear_Interlocked);
+
+ pragma Export_Procedure
+ (Set_Interlocked,
+ External => "system__aux_dec__set_interlocked__1",
+ Parameter_Types => (Boolean, Boolean),
+ Mechanism => (Reference, Reference));
+ pragma Export_Procedure
+ (Set_Interlocked,
+ External => "system__aux_dec__set_interlocked__2",
+ Parameter_Types => (Boolean, Boolean, Natural, Boolean),
+ Mechanism => (Reference, Reference, Value, Reference));
+ pragma Inline_Always (Set_Interlocked);
+
+ pragma Export_Procedure
+ (Add_Interlocked,
+ External => "system__aux_dec__add_interlocked__1",
+ Mechanism => (Value, Reference, Reference));
+ pragma Inline_Always (Add_Interlocked);
+
+ pragma Export_Procedure
+ (Add_Atomic,
+ External => "system__aux_dec__add_atomic__1",
+ Parameter_Types => (Aligned_Integer, Integer),
+ Mechanism => (Reference, Value));
+ pragma Export_Procedure
+ (Add_Atomic,
+ External => "system__aux_dec__add_atomic__2",
+ Parameter_Types => (Aligned_Integer, Integer, Natural, Integer, Boolean),
+ Mechanism => (Reference, Value, Value, Reference, Reference));
+ pragma Export_Procedure
+ (Add_Atomic,
+ External => "system__aux_dec__add_atomic__3",
+ Parameter_Types => (Aligned_Long_Integer, Long_Integer),
+ Mechanism => (Reference, Value));
+ pragma Export_Procedure
+ (Add_Atomic,
+ External => "system__aux_dec__add_atomic__4",
+ Parameter_Types => (Aligned_Long_Integer, Long_Integer, Natural,
+ Long_Integer, Boolean),
+ Mechanism => (Reference, Value, Value, Reference, Reference));
+ pragma Inline_Always (Add_Atomic);
+
+ pragma Export_Procedure
+ (And_Atomic,
+ External => "system__aux_dec__and_atomic__1",
+ Parameter_Types => (Aligned_Integer, Integer),
+ Mechanism => (Reference, Value));
+ pragma Export_Procedure
+ (And_Atomic,
+ External => "system__aux_dec__and_atomic__2",
+ Parameter_Types => (Aligned_Integer, Integer, Natural, Integer, Boolean),
+ Mechanism => (Reference, Value, Value, Reference, Reference));
+ pragma Export_Procedure
+ (And_Atomic,
+ External => "system__aux_dec__and_atomic__3",
+ Parameter_Types => (Aligned_Long_Integer, Long_Integer),
+ Mechanism => (Reference, Value));
+ pragma Export_Procedure
+ (And_Atomic,
+ External => "system__aux_dec__and_atomic__4",
+ Parameter_Types => (Aligned_Long_Integer, Long_Integer, Natural,
+ Long_Integer, Boolean),
+ Mechanism => (Reference, Value, Value, Reference, Reference));
+ pragma Inline_Always (And_Atomic);
+
+ pragma Export_Procedure
+ (Or_Atomic,
+ External => "system__aux_dec__or_atomic__1",
+ Parameter_Types => (Aligned_Integer, Integer),
+ Mechanism => (Reference, Value));
+ pragma Export_Procedure
+ (Or_Atomic,
+ External => "system__aux_dec__or_atomic__2",
+ Parameter_Types => (Aligned_Integer, Integer, Natural, Integer, Boolean),
+ Mechanism => (Reference, Value, Value, Reference, Reference));
+ pragma Export_Procedure
+ (Or_Atomic,
+ External => "system__aux_dec__or_atomic__3",
+ Parameter_Types => (Aligned_Long_Integer, Long_Integer),
+ Mechanism => (Reference, Value));
+ pragma Export_Procedure
+ (Or_Atomic,
+ External => "system__aux_dec__or_atomic__4",
+ Parameter_Types => (Aligned_Long_Integer, Long_Integer, Natural,
+ Long_Integer, Boolean),
+ Mechanism => (Reference, Value, Value, Reference, Reference));
+ pragma Inline_Always (Or_Atomic);
+
+ -- Provide proper unchecked conversion definitions for transfer
+ -- functions. Note that we need this level of indirection because
+ -- the formal parameter name is X and not Source (and this is indeed
+ -- detectable by a program)
+
+ function To_Unsigned_Byte_A is new
+ Ada.Unchecked_Conversion (Bit_Array_8, Unsigned_Byte);
+
+ function To_Unsigned_Byte (X : Bit_Array_8) return Unsigned_Byte
+ renames To_Unsigned_Byte_A;
+
+ function To_Bit_Array_8_A is new
+ Ada.Unchecked_Conversion (Unsigned_Byte, Bit_Array_8);
+
+ function To_Bit_Array_8 (X : Unsigned_Byte) return Bit_Array_8
+ renames To_Bit_Array_8_A;
+
+ function To_Unsigned_Word_A is new
+ Ada.Unchecked_Conversion (Bit_Array_16, Unsigned_Word);
+
+ function To_Unsigned_Word (X : Bit_Array_16) return Unsigned_Word
+ renames To_Unsigned_Word_A;
+
+ function To_Bit_Array_16_A is new
+ Ada.Unchecked_Conversion (Unsigned_Word, Bit_Array_16);
+
+ function To_Bit_Array_16 (X : Unsigned_Word) return Bit_Array_16
+ renames To_Bit_Array_16_A;
+
+ function To_Unsigned_Longword_A is new
+ Ada.Unchecked_Conversion (Bit_Array_32, Unsigned_Longword);
+
+ function To_Unsigned_Longword (X : Bit_Array_32) return Unsigned_Longword
+ renames To_Unsigned_Longword_A;
+
+ function To_Bit_Array_32_A is new
+ Ada.Unchecked_Conversion (Unsigned_Longword, Bit_Array_32);
+
+ function To_Bit_Array_32 (X : Unsigned_Longword) return Bit_Array_32
+ renames To_Bit_Array_32_A;
+
+ function To_Unsigned_32_A is new
+ Ada.Unchecked_Conversion (Bit_Array_32, Unsigned_32);
+
+ function To_Unsigned_32 (X : Bit_Array_32) return Unsigned_32
+ renames To_Unsigned_32_A;
+
+ function To_Bit_Array_32_A is new
+ Ada.Unchecked_Conversion (Unsigned_32, Bit_Array_32);
+
+ function To_Bit_Array_32 (X : Unsigned_32) return Bit_Array_32
+ renames To_Bit_Array_32_A;
+
+ function To_Unsigned_Quadword_A is new
+ Ada.Unchecked_Conversion (Bit_Array_64, Unsigned_Quadword);
+
+ function To_Unsigned_Quadword (X : Bit_Array_64) return Unsigned_Quadword
+ renames To_Unsigned_Quadword_A;
+
+ function To_Bit_Array_64_A is new
+ Ada.Unchecked_Conversion (Unsigned_Quadword, Bit_Array_64);
+
+ function To_Bit_Array_64 (X : Unsigned_Quadword) return Bit_Array_64
+ renames To_Bit_Array_64_A;
+
+ pragma Warnings (Off);
+ -- Turn warnings off. This is needed for systems with 64-bit integers,
+ -- where some of these operations are of dubious meaning, but we do not
+ -- want warnings when we compile on such systems.
+
+ function To_Address_A is new
+ Ada.Unchecked_Conversion (Integer, Address);
+ pragma Pure_Function (To_Address_A);
+
+ function To_Address (X : Integer) return Address
+ renames To_Address_A;
+ pragma Pure_Function (To_Address);
+
+ function To_Address_Long_A is new
+ Ada.Unchecked_Conversion (Unsigned_Longword, Address);
+ pragma Pure_Function (To_Address_Long_A);
+
+ function To_Address_Long (X : Unsigned_Longword) return Address
+ renames To_Address_Long_A;
+ pragma Pure_Function (To_Address_Long);
+
+ function To_Integer_A is new
+ Ada.Unchecked_Conversion (Address, Integer);
+
+ function To_Integer (X : Address) return Integer
+ renames To_Integer_A;
+
+ function To_Unsigned_Longword_A is new
+ Ada.Unchecked_Conversion (Address, Unsigned_Longword);
+
+ function To_Unsigned_Longword (X : Address) return Unsigned_Longword
+ renames To_Unsigned_Longword_A;
+
+ function To_Unsigned_Longword_A is new
+ Ada.Unchecked_Conversion (AST_Handler, Unsigned_Longword);
+
+ function To_Unsigned_Longword (X : AST_Handler) return Unsigned_Longword
+ renames To_Unsigned_Longword_A;
+
+ pragma Warnings (On);
+
+end System.Aux_DEC;