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------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- S Y S T E M . A D D R E S S _ I M A G E --
-- --
-- B o d y --
-- --
-- Copyright (C) 1992,1993,1994,1995,1996 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- --
-- 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. --
-- --
-- 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. --
-- --
------------------------------------------------------------------------------
with Unchecked_Conversion;
function System.Address_Image (A : Address) return String is
Result : String (1 .. 2 * Address'Size / Storage_Unit);
type Byte is mod 2 ** 8;
for Byte'Size use 8;
Hexdigs :
constant array (Byte range 0 .. 15) of Character := "0123456789ABCDEF";
type Bytes is array (1 .. Address'Size / Storage_Unit) of Byte;
for Bytes'Size use Address'Size;
function To_Bytes is new Unchecked_Conversion (Address, Bytes);
Byte_Sequence : constant Bytes := To_Bytes (A);
LE : constant := Standard'Default_Bit_Order;
BE : constant := 1 - LE;
-- Set to 1/0 for True/False for Little-Endian/Big-Endian
Start : constant Natural := BE * (1) + LE * (Bytes'Length);
Incr : constant Integer := BE * (1) + LE * (-1);
-- Start and increment for accessing characters of address string
Ptr : Natural;
-- Scan address string
begin
Ptr := Start;
for N in Bytes'Range loop
Result (2 * N - 1) := Hexdigs (Byte_Sequence (Ptr) / 16);
Result (2 * N) := Hexdigs (Byte_Sequence (Ptr) mod 16);
Ptr := Ptr + Incr;
end loop;
return Result;
end System.Address_Image;
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