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------------------------------------------------------------------------------
-- --
-- GNAT RUN-TIME COMPONENTS --
-- --
-- S Y S T E M . I M A G E _ A --
-- --
-- B o d y --
-- --
-- Copyright (C) 2024, 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. --
-- --
------------------------------------------------------------------------------
with Ada.Unchecked_Conversion;
with System.Storage_Elements; use System.Storage_Elements;
package body System.Image_A is
-------------------
-- Address_Image --
-------------------
function Address_Image (A : Address) return Address_String is
Result : Address_String;
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 .. Uns'Size / Storage_Unit) of Byte;
function To_Bytes is new Ada.Unchecked_Conversion (Uns, Bytes);
Byte_Sequence : constant Bytes := To_Bytes (Uns (Integer_Address (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 Address_Image;
end System.Image_A;
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