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fbf5a39b AC |
1 | ------------------------------------------------------------------------------ |
2 | -- -- | |
3 | -- GNAT COMPILER COMPONENTS -- | |
4 | -- -- | |
5 | -- G N A T S Y M -- | |
6 | -- -- | |
7 | -- B o d y -- | |
8 | -- -- | |
751089b2 | 9 | -- Copyright (C) 2003-2007, Free Software Foundation, Inc. -- |
fbf5a39b AC |
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- -- | |
b5c84c3c | 13 | -- ware Foundation; either version 3, or (at your option) any later ver- -- |
fbf5a39b AC |
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 -- | |
b5c84c3c RD |
18 | -- Public License distributed with GNAT; see file COPYING3. If not, go to -- |
19 | -- http://www.gnu.org/licenses for a complete copy of the license. -- | |
fbf5a39b AC |
20 | -- -- |
21 | -- GNAT was originally developed by the GNAT team at New York University. -- | |
22 | -- Extensive contributions were provided by Ada Core Technologies Inc. -- | |
23 | -- -- | |
24 | ------------------------------------------------------------------------------ | |
25 | ||
26 | -- This utility application creates symbol files in a format that is | |
27 | -- platform-dependent. | |
28 | ||
29 | -- A symbol file is a text file that lists the symbols to be exported from | |
30 | -- a shared library. The format of a symbol file depends on the platform; | |
31 | -- it may be a simple enumeration of the symbol (one per line) or a more | |
32 | -- elaborate format (on VMS, for example). A symbol file may be used as an | |
33 | -- input to the platform linker when building a shared library. | |
34 | ||
35 | -- This utility is not available on all platforms. It is currently supported | |
36 | -- only on OpenVMS. | |
37 | ||
38 | -- gnatsym takes as parameters: | |
19f0526a AC |
39 | -- - the name of the symbol file to create |
40 | -- - (optional) the policy to create the symbol file | |
41 | -- - (optional) the name of the reference symbol file | |
fbf5a39b AC |
42 | -- - the names of one or more object files where the symbols are found |
43 | ||
751089b2 VC |
44 | with Ada.Exceptions; use Ada.Exceptions; |
45 | with Ada.Text_IO; use Ada.Text_IO; | |
46 | ||
fbf5a39b AC |
47 | with GNAT.Command_Line; use GNAT.Command_Line; |
48 | with GNAT.OS_Lib; use GNAT.OS_Lib; | |
49 | ||
50 | with Gnatvsn; use Gnatvsn; | |
51 | with Osint; use Osint; | |
52 | with Output; use Output; | |
53 | ||
54 | with Symbols; use Symbols; | |
55 | with Table; | |
56 | ||
57 | procedure Gnatsym is | |
58 | ||
19f0526a | 59 | Empty_String : aliased String := ""; |
91b1417d | 60 | Empty : constant String_Access := Empty_String'Unchecked_Access; |
19f0526a AC |
61 | -- To initialize variables Reference and Version_String |
62 | ||
fbf5a39b AC |
63 | Copyright_Displayed : Boolean := False; |
64 | -- A flag to prevent multiple display of the Copyright notice | |
65 | ||
66 | Success : Boolean := True; | |
67 | ||
19f0526a | 68 | Symbol_Policy : Policy := Autonomous; |
fbf5a39b AC |
69 | |
70 | Verbose : Boolean := False; | |
71 | -- True when -v switch is used | |
72 | ||
73 | Quiet : Boolean := False; | |
74 | -- True when -q switch is used | |
75 | ||
19f0526a | 76 | Symbol_File_Name : String_Access := null; |
fbf5a39b AC |
77 | -- The name of the symbol file |
78 | ||
19f0526a AC |
79 | Reference_Symbol_File_Name : String_Access := Empty; |
80 | -- The name of the reference symbol file | |
81 | ||
82 | Version_String : String_Access := Empty; | |
9de61fcb | 83 | -- The version of the library (used on VMS) |
19f0526a | 84 | |
fbf5a39b AC |
85 | package Object_Files is new Table.Table |
86 | (Table_Component_Type => String_Access, | |
87 | Table_Index_Type => Natural, | |
88 | Table_Low_Bound => 0, | |
89 | Table_Initial => 10, | |
cce68562 | 90 | Table_Increment => 100, |
fbf5a39b AC |
91 | Table_Name => "Gnatsymb.Object_Files"); |
92 | -- A table to store the object file names | |
93 | ||
94 | Object_File : Natural := 0; | |
95 | -- An index to traverse the Object_Files table | |
96 | ||
97 | procedure Display_Copyright; | |
98 | -- Display Copyright notice | |
99 | ||
100 | procedure Parse_Cmd_Line; | |
101 | -- Parse the command line switches and file names | |
102 | ||
103 | procedure Usage; | |
104 | -- Display the usage | |
105 | ||
106 | ----------------------- | |
107 | -- Display_Copyright -- | |
108 | ----------------------- | |
109 | ||
110 | procedure Display_Copyright is | |
111 | begin | |
112 | if not Copyright_Displayed then | |
113 | Write_Eol; | |
114 | Write_Str ("GNATSYMB "); | |
115 | Write_Str (Gnat_Version_String); | |
5f8abbd9 AC |
116 | Write_Eol; |
117 | Write_Str ("Copyright 2003-2004 Free Software Foundation, Inc"); | |
fbf5a39b AC |
118 | Write_Eol; |
119 | Copyright_Displayed := True; | |
120 | end if; | |
121 | end Display_Copyright; | |
122 | ||
123 | -------------------- | |
124 | -- Parse_Cmd_Line -- | |
125 | -------------------- | |
126 | ||
127 | procedure Parse_Cmd_Line is | |
128 | begin | |
129 | loop | |
751089b2 | 130 | case GNAT.Command_Line.Getopt ("c C D q r: R s: v V:") is |
fbf5a39b AC |
131 | when ASCII.NUL => |
132 | exit; | |
133 | ||
19f0526a AC |
134 | when 'c' => |
135 | Symbol_Policy := Compliant; | |
136 | ||
137 | when 'C' => | |
138 | Symbol_Policy := Controlled; | |
fbf5a39b | 139 | |
751089b2 VC |
140 | when 'D' => |
141 | Symbol_Policy := Direct; | |
142 | ||
fbf5a39b AC |
143 | when 'q' => |
144 | Quiet := True; | |
145 | ||
19f0526a AC |
146 | when 'r' => |
147 | Reference_Symbol_File_Name := | |
148 | new String'(GNAT.Command_Line.Parameter); | |
149 | ||
5453d5bd AC |
150 | when 'R' => |
151 | Symbol_Policy := Restricted; | |
152 | ||
19f0526a AC |
153 | when 's' => |
154 | Symbol_File_Name := new String'(GNAT.Command_Line.Parameter); | |
155 | ||
fbf5a39b AC |
156 | when 'v' => |
157 | Verbose := True; | |
158 | ||
19f0526a AC |
159 | when 'V' => |
160 | Version_String := new String'(GNAT.Command_Line.Parameter); | |
161 | ||
fbf5a39b AC |
162 | when others => |
163 | Fail ("invalid switch: ", Full_Switch); | |
164 | end case; | |
165 | end loop; | |
166 | ||
167 | -- Get the file names | |
168 | ||
169 | loop | |
170 | declare | |
171 | S : constant String_Access := | |
172 | new String'(GNAT.Command_Line.Get_Argument); | |
173 | ||
174 | begin | |
175 | exit when S'Length = 0; | |
176 | ||
19f0526a AC |
177 | Object_Files.Increment_Last; |
178 | Object_Files.Table (Object_Files.Last) := S; | |
fbf5a39b AC |
179 | end; |
180 | end loop; | |
181 | exception | |
182 | when Invalid_Switch => | |
183 | Usage; | |
184 | Fail ("invalid switch : ", Full_Switch); | |
185 | end Parse_Cmd_Line; | |
186 | ||
187 | ----------- | |
188 | -- Usage -- | |
189 | ----------- | |
190 | ||
191 | procedure Usage is | |
192 | begin | |
19f0526a | 193 | Write_Line ("gnatsym [options] object_file {object_file}"); |
fbf5a39b | 194 | Write_Eol; |
5453d5bd AC |
195 | Write_Line (" -c Compliant symbol policy"); |
196 | Write_Line (" -C Controlled symbol policy"); | |
19f0526a AC |
197 | Write_Line (" -q Quiet mode"); |
198 | Write_Line (" -r<ref> Reference symbol file name"); | |
5453d5bd | 199 | Write_Line (" -R Restricted symbol policy"); |
19f0526a AC |
200 | Write_Line (" -s<sym> Symbol file name"); |
201 | Write_Line (" -v Verbose mode"); | |
202 | Write_Line (" -V<ver> Version"); | |
203 | Write_Eol; | |
204 | Write_Line ("Specifying a symbol file with -s<sym> is compulsory"); | |
fbf5a39b AC |
205 | Write_Eol; |
206 | end Usage; | |
207 | ||
208 | -- Start of processing of Gnatsym | |
209 | ||
210 | begin | |
211 | -- Initialize Object_Files table | |
212 | ||
213 | Object_Files.Set_Last (0); | |
214 | ||
215 | -- Parse the command line | |
216 | ||
217 | Parse_Cmd_Line; | |
218 | ||
219 | if Verbose then | |
220 | Display_Copyright; | |
221 | end if; | |
222 | ||
223 | -- If there is no symbol file or no object files on the command line, | |
224 | -- display the usage and exit with an error status. | |
225 | ||
19f0526a | 226 | if Symbol_File_Name = null or else Object_Files.Last = 0 then |
fbf5a39b AC |
227 | Usage; |
228 | OS_Exit (1); | |
229 | ||
751089b2 VC |
230 | -- When symbol policy is direct, simply copy the reference symbol file to |
231 | -- the symbol file. | |
232 | ||
233 | elsif Symbol_Policy = Direct then | |
234 | declare | |
235 | File_In : Ada.Text_IO.File_Type; | |
236 | File_Out : Ada.Text_IO.File_Type; | |
237 | Line : String (1 .. 1_000); | |
238 | Last : Natural; | |
239 | ||
240 | begin | |
241 | begin | |
242 | Open (File_In, In_File, Reference_Symbol_File_Name.all); | |
243 | ||
244 | exception | |
245 | when X : others => | |
246 | if not Quiet then | |
247 | Put_Line | |
248 | ("could not open """ & | |
249 | Reference_Symbol_File_Name.all | |
250 | & """"); | |
251 | Put_Line (Exception_Message (X)); | |
252 | end if; | |
253 | ||
254 | OS_Exit (1); | |
255 | end; | |
256 | ||
257 | begin | |
258 | Create (File_Out, Out_File, Symbol_File_Name.all); | |
259 | ||
260 | exception | |
261 | when X : others => | |
262 | if not Quiet then | |
263 | Put_Line | |
264 | ("could not create """ & Symbol_File_Name.all & """"); | |
265 | Put_Line (Exception_Message (X)); | |
266 | end if; | |
267 | ||
268 | OS_Exit (1); | |
269 | end; | |
270 | ||
271 | while not End_Of_File (File_In) loop | |
272 | Get_Line (File_In, Line, Last); | |
273 | Put_Line (File_Out, Line (1 .. Last)); | |
274 | end loop; | |
275 | ||
276 | Close (File_In); | |
277 | Close (File_Out); | |
278 | end; | |
279 | ||
fbf5a39b AC |
280 | else |
281 | if Verbose then | |
282 | Write_Str ("Initializing symbol file """); | |
283 | Write_Str (Symbol_File_Name.all); | |
284 | Write_Line (""""); | |
285 | end if; | |
286 | ||
91b1417d | 287 | -- Initialize symbol file and, if specified, read reference file |
fbf5a39b | 288 | |
19f0526a AC |
289 | Symbols.Initialize |
290 | (Symbol_File => Symbol_File_Name.all, | |
291 | Reference => Reference_Symbol_File_Name.all, | |
292 | Symbol_Policy => Symbol_Policy, | |
293 | Quiet => Quiet, | |
294 | Version => Version_String.all, | |
295 | Success => Success); | |
fbf5a39b AC |
296 | |
297 | -- Process the object files in order. Stop as soon as there is | |
298 | -- something wrong. | |
299 | ||
300 | Object_File := 0; | |
301 | ||
302 | while Success and then Object_File < Object_Files.Last loop | |
303 | Object_File := Object_File + 1; | |
304 | ||
305 | if Verbose then | |
306 | Write_Str ("Processing object file """); | |
307 | Write_Str (Object_Files.Table (Object_File).all); | |
308 | Write_Line (""""); | |
309 | end if; | |
310 | ||
65b10832 | 311 | Processing.Process (Object_Files.Table (Object_File).all, Success); |
fbf5a39b AC |
312 | end loop; |
313 | ||
314 | -- Finalize the object file | |
315 | ||
316 | if Success then | |
317 | if Verbose then | |
318 | Write_Str ("Finalizing """); | |
319 | Write_Str (Symbol_File_Name.all); | |
320 | Write_Line (""""); | |
321 | end if; | |
322 | ||
323 | Finalize (Quiet, Success); | |
324 | end if; | |
325 | ||
19f0526a AC |
326 | -- Fail if there was anything wrong |
327 | ||
fbf5a39b AC |
328 | if not Success then |
329 | Fail ("unable to build symbol file"); | |
330 | end if; | |
331 | end if; | |
332 | end Gnatsym; |