1 ------------------------------------------------------------------------------
3 -- GNAT LIBRARY COMPONENTS --
5 -- G N A T . D E B U G _ U T I L I T I E S --
9 -- Copyright (C) 1997-2010, AdaCore --
11 -- GNAT is free software; you can redistribute it and/or modify it under --
12 -- terms of the GNU General Public License as published by the Free Soft- --
13 -- ware Foundation; either version 3, or (at your option) any later ver- --
14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
16 -- or FITNESS FOR A PARTICULAR PURPOSE. --
18 -- As a special exception under Section 7 of GPL version 3, you are granted --
19 -- additional permissions described in the GCC Runtime Library Exception, --
20 -- version 3.1, as published by the Free Software Foundation. --
22 -- You should have received a copy of the GNU General Public License and --
23 -- a copy of the GCC Runtime Library Exception along with this program; --
24 -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
25 -- <http://www.gnu.org/licenses/>. --
27 -- GNAT was originally developed by the GNAT team at New York University. --
28 -- Extensive contributions were provided by Ada Core Technologies Inc. --
30 ------------------------------------------------------------------------------
32 with System; use System;
33 with System.Storage_Elements; use System.Storage_Elements;
35 package body GNAT.Debug_Utilities is
37 H : constant array (0 .. 15) of Character := "0123456789ABCDEF";
38 -- Table of hex digits
46 function Image (A : Address) return Image_String is
54 P := Address_Image_Length - 1;
66 S (P) := H (Integer (N mod 16));
81 function Image (S : String) return String is
82 W : String (1 .. 2 * S'Length + 2);
107 function Image_C (A : Address) return Image_C_String is
109 N : Integer_Address := To_Integer (A);
112 for P in reverse 3 .. S'Last loop
113 S (P) := H (Integer (N mod 16));
125 function Value (S : String) return System.Address is
126 Base : Integer_Address := 10;
127 Res : Integer_Address := 0;
128 Last : Natural := S'Last;
133 -- Skip final Ada 95 base character
135 if S (Last) = '#' or else S (Last) = ':' then
139 -- Loop through characters
141 for J in S'First .. Last loop
144 -- C format hex constant
148 raise Constraint_Error;
153 -- Ada form based literal
155 elsif C = '#' or else C = ':' then
159 -- Ignore all underlines
164 -- Otherwise must have digit
167 if C in '0' .. '9' then
168 N := Character'Pos (C) - Character'Pos ('0');
169 elsif C in 'A' .. 'F' then
170 N := Character'Pos (C) - (Character'Pos ('A') - 10);
171 elsif C in 'a' .. 'f' then
172 N := Character'Pos (C) - (Character'Pos ('a') - 10);
174 raise Constraint_Error;
178 raise Constraint_Error;
180 Res := Res * Base + N;
185 return To_Address (Res);
188 end GNAT.Debug_Utilities;