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) 1997-2005, 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 2, 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. See the GNU General Public License --
17 -- for more details. You should have received a copy of the GNU General --
18 -- Public License distributed with GNAT; see file COPYING. If not, write --
19 -- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
20 -- Boston, MA 02110-1301, USA. --
22 -- As a special exception, if other files instantiate generics from this --
23 -- unit, or you link this unit with other files to produce an executable, --
24 -- this unit does not by itself cause the resulting executable to be --
25 -- covered by the GNU General Public License. This exception does not --
26 -- however invalidate any other reasons why the executable file might be --
27 -- covered by the GNU Public License. --
29 -- GNAT was originally developed by the GNAT team at New York University. --
30 -- Extensive contributions were provided by Ada Core Technologies Inc. --
32 ------------------------------------------------------------------------------
34 with System; use System;
35 with System.Storage_Elements; use System.Storage_Elements;
37 package body GNAT.Debug_Utilities is
39 H : constant array (0 .. 15) of Character := "0123456789ABCDEF";
40 -- Table of hex digits
48 function Image (A : Address) return Image_String is
56 P := Address_Image_Length - 1;
68 S (P) := H (Integer (N mod 16));
83 function Image (S : String) return String is
84 W : String (1 .. 2 * S'Length + 2);
109 function Image_C (A : Address) return Image_C_String is
111 N : Integer_Address := To_Integer (A);
114 for P in reverse 3 .. S'Last loop
115 S (P) := H (Integer (N mod 16));
127 function Value (S : String) return System.Address is
128 Base : Integer_Address := 10;
129 Res : Integer_Address := 0;
130 Last : Natural := S'Last;
135 -- Skip final Ada 95 base character
137 if S (Last) = '#' or else S (Last) = ':' then
141 -- Loop through characters
143 for J in S'First .. Last loop
146 -- C format hex constant
150 raise Constraint_Error;
155 -- Ada form based literal
157 elsif C = '#' or else C = ':' then
161 -- Ignore all underlines
166 -- Otherwise must have digit
169 if C in '0' .. '9' then
170 N := Character'Pos (C) - Character'Pos ('0');
171 elsif C in 'A' .. 'F' then
172 N := Character'Pos (C) - (Character'Pos ('A') - 10);
173 elsif C in 'a' .. 'f' then
174 N := Character'Pos (C) - (Character'Pos ('a') - 10);
176 raise Constraint_Error;
180 raise Constraint_Error;
182 Res := Res * Base + N;
187 return To_Address (Res);
190 end GNAT.Debug_Utilities;