1------------------------------------------------------------------------------
2--                                                                          --
3--                         GNAT COMPILER COMPONENTS                         --
4--                                                                          --
5--              I N T E R F A C E S . C . E X T E N S I O N S               --
6--                                                                          --
7--                                 S p e c                                  --
8--                                                                          --
9--          Copyright (C) 1992-2011, Free Software Foundation, Inc.         --
10--                                                                          --
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.                                     --
17--                                                                          --
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.               --
21--                                                                          --
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/>.                                          --
26--                                                                          --
27-- GNAT was originally developed  by the GNAT team at  New York University. --
28-- Extensive contributions were provided by Ada Core Technologies Inc.      --
29--                                                                          --
30------------------------------------------------------------------------------
31
32--  This package contains additional C-related definitions, intended for use
33--  with either manually or automatically generated bindings to C libraries.
34
35with System;
36
37package Interfaces.C.Extensions is
38   pragma Pure;
39
40   --  Definitions for C "void" and "void *" types
41
42   subtype void     is System.Address;
43   subtype void_ptr is System.Address;
44
45   --  Definitions for C incomplete/unknown structs
46
47   subtype opaque_structure_def is System.Address;
48   type opaque_structure_def_ptr is access opaque_structure_def;
49   for opaque_structure_def_ptr'Storage_Size use 0;
50
51   --  Definitions for C++ incomplete/unknown classes
52
53   subtype incomplete_class_def is System.Address;
54   type incomplete_class_def_ptr is access incomplete_class_def;
55   for incomplete_class_def_ptr'Storage_Size use 0;
56
57   --  C bool
58
59   subtype bool is plain_char;
60
61   --  64-bit integer types
62
63   subtype long_long is Long_Long_Integer;
64   type unsigned_long_long is mod 2 ** 64;
65
66   --  128-bit integer type available on 64-bit platforms:
67   --  typedef int signed_128 __attribute__ ((mode (TI)));
68
69   type Signed_128 is record
70      low, high : unsigned_long_long;
71   end record;
72   pragma Convention (C_Pass_By_Copy, Signed_128);
73   for Signed_128'Alignment use unsigned_long_long'Alignment * 2;
74
75   --  Types for bitfields
76
77   type Unsigned_1 is mod 2 ** 1;
78   for Unsigned_1'Size use 1;
79
80   type Unsigned_2 is mod 2 ** 2;
81   for Unsigned_2'Size use 2;
82
83   type Unsigned_3 is mod 2 ** 3;
84   for Unsigned_3'Size use 3;
85
86   type Unsigned_4 is mod 2 ** 4;
87   for Unsigned_4'Size use 4;
88
89   type Unsigned_5 is mod 2 ** 5;
90   for Unsigned_5'Size use 5;
91
92   type Unsigned_6 is mod 2 ** 6;
93   for Unsigned_6'Size use 6;
94
95   type Unsigned_7 is mod 2 ** 7;
96   for Unsigned_7'Size use 7;
97
98   type Unsigned_8 is mod 2 ** 8;
99   for Unsigned_8'Size use 8;
100
101   type Unsigned_9 is mod 2 ** 9;
102   for Unsigned_9'Size use 9;
103
104   type Unsigned_10 is mod 2 ** 10;
105   for Unsigned_10'Size use 10;
106
107   type Unsigned_11 is mod 2 ** 11;
108   for Unsigned_11'Size use 11;
109
110   type Unsigned_12 is mod 2 ** 12;
111   for Unsigned_12'Size use 12;
112
113   type Unsigned_13 is mod 2 ** 13;
114   for Unsigned_13'Size use 13;
115
116   type Unsigned_14 is mod 2 ** 14;
117   for Unsigned_14'Size use 14;
118
119   type Unsigned_15 is mod 2 ** 15;
120   for Unsigned_15'Size use 15;
121
122   type Unsigned_16 is mod 2 ** 16;
123   for Unsigned_16'Size use 16;
124
125   type Unsigned_17 is mod 2 ** 17;
126   for Unsigned_17'Size use 17;
127
128   type Unsigned_18 is mod 2 ** 18;
129   for Unsigned_18'Size use 18;
130
131   type Unsigned_19 is mod 2 ** 19;
132   for Unsigned_19'Size use 19;
133
134   type Unsigned_20 is mod 2 ** 20;
135   for Unsigned_20'Size use 20;
136
137   type Unsigned_21 is mod 2 ** 21;
138   for Unsigned_21'Size use 21;
139
140   type Unsigned_22 is mod 2 ** 22;
141   for Unsigned_22'Size use 22;
142
143   type Unsigned_23 is mod 2 ** 23;
144   for Unsigned_23'Size use 23;
145
146   type Unsigned_24 is mod 2 ** 24;
147   for Unsigned_24'Size use 24;
148
149   type Unsigned_25 is mod 2 ** 25;
150   for Unsigned_25'Size use 25;
151
152   type Unsigned_26 is mod 2 ** 26;
153   for Unsigned_26'Size use 26;
154
155   type Unsigned_27 is mod 2 ** 27;
156   for Unsigned_27'Size use 27;
157
158   type Unsigned_28 is mod 2 ** 28;
159   for Unsigned_28'Size use 28;
160
161   type Unsigned_29 is mod 2 ** 29;
162   for Unsigned_29'Size use 29;
163
164   type Unsigned_30 is mod 2 ** 30;
165   for Unsigned_30'Size use 30;
166
167   type Unsigned_31 is mod 2 ** 31;
168   for Unsigned_31'Size use 31;
169
170   type Unsigned_32 is mod 2 ** 32;
171   for Unsigned_32'Size use 32;
172
173   type Signed_2 is range -2 ** 1 .. 2 ** 1 - 1;
174   for Signed_2'Size use 2;
175
176   type Signed_3 is range -2 ** 2 .. 2 ** 2 - 1;
177   for Signed_3'Size use 3;
178
179   type Signed_4 is range -2 ** 3 .. 2 ** 3 - 1;
180   for Signed_4'Size use 4;
181
182   type Signed_5 is range -2 ** 4 .. 2 ** 4 - 1;
183   for Signed_5'Size use 5;
184
185   type Signed_6 is range -2 ** 5 .. 2 ** 5 - 1;
186   for Signed_6'Size use 6;
187
188   type Signed_7 is range -2 ** 6 .. 2 ** 6 - 1;
189   for Signed_7'Size use 7;
190
191   type Signed_8 is range -2 ** 7 .. 2 ** 7 - 1;
192   for Signed_8'Size use 8;
193
194   type Signed_9 is range -2 ** 8 .. 2 ** 8 - 1;
195   for Signed_9'Size use 9;
196
197   type Signed_10 is range -2 ** 9 .. 2 ** 9 - 1;
198   for Signed_10'Size use 10;
199
200   type Signed_11 is range -2 ** 10 .. 2 ** 10 - 1;
201   for Signed_11'Size use 11;
202
203   type Signed_12 is range -2 ** 11 .. 2 ** 11 - 1;
204   for Signed_12'Size use 12;
205
206   type Signed_13 is range -2 ** 12 .. 2 ** 12 - 1;
207   for Signed_13'Size use 13;
208
209   type Signed_14 is range -2 ** 13 .. 2 ** 13 - 1;
210   for Signed_14'Size use 14;
211
212   type Signed_15 is range -2 ** 14 .. 2 ** 14 - 1;
213   for Signed_15'Size use 15;
214
215   type Signed_16 is range -2 ** 15 .. 2 ** 15 - 1;
216   for Signed_16'Size use 16;
217
218   type Signed_17 is range -2 ** 16 .. 2 ** 16 - 1;
219   for Signed_17'Size use 17;
220
221   type Signed_18 is range -2 ** 17 .. 2 ** 17 - 1;
222   for Signed_18'Size use 18;
223
224   type Signed_19 is range -2 ** 18 .. 2 ** 18 - 1;
225   for Signed_19'Size use 19;
226
227   type Signed_20 is range -2 ** 19 .. 2 ** 19 - 1;
228   for Signed_20'Size use 20;
229
230   type Signed_21 is range -2 ** 20 .. 2 ** 20 - 1;
231   for Signed_21'Size use 21;
232
233   type Signed_22 is range -2 ** 21 .. 2 ** 21 - 1;
234   for Signed_22'Size use 22;
235
236   type Signed_23 is range -2 ** 22 .. 2 ** 22 - 1;
237   for Signed_23'Size use 23;
238
239   type Signed_24 is range -2 ** 23 .. 2 ** 23 - 1;
240   for Signed_24'Size use 24;
241
242   type Signed_25 is range -2 ** 24 .. 2 ** 24 - 1;
243   for Signed_25'Size use 25;
244
245   type Signed_26 is range -2 ** 25 .. 2 ** 25 - 1;
246   for Signed_26'Size use 26;
247
248   type Signed_27 is range -2 ** 26 .. 2 ** 26 - 1;
249   for Signed_27'Size use 27;
250
251   type Signed_28 is range -2 ** 27 .. 2 ** 27 - 1;
252   for Signed_28'Size use 28;
253
254   type Signed_29 is range -2 ** 28 .. 2 ** 28 - 1;
255   for Signed_29'Size use 29;
256
257   type Signed_30 is range -2 ** 29 .. 2 ** 29 - 1;
258   for Signed_30'Size use 30;
259
260   type Signed_31 is range -2 ** 30 .. 2 ** 30 - 1;
261   for Signed_31'Size use 31;
262
263   type Signed_32 is range -2 ** 31 .. 2 ** 31 - 1;
264   for Signed_32'Size use 32;
265
266end Interfaces.C.Extensions;
267