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  1. /* ranlib.h -- archive library index member definition for GNU.
  2.    Copyright (C) 1990-2015 Free Software Foundation, Inc.
  3.  
  4.    This program is free software; you can redistribute it and/or modify
  5.    it under the terms of the GNU General Public License as published by
  6.    the Free Software Foundation; either version 3 of the License, or
  7.    (at your option) any later version.
  8.  
  9.    This program is distributed in the hope that it will be useful,
  10.    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11.    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12.    GNU General Public License for more details.
  13.  
  14.    You should have received a copy of the GNU General Public License
  15.    along with this program; if not, write to the Free Software
  16.    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  17.    MA 02110-1301, USA.  */
  18.  
  19. /* The Symdef member of an archive contains two things:
  20.    a table that maps symbol-string offsets to file offsets,
  21.    and a symbol-string table.  All the symbol names are
  22.    run together (each with trailing null) in the symbol-string
  23.    table.  There is a single longword bytecount on the front
  24.    of each of these tables.  Thus if we have two symbols,
  25.    "foo" and "_bar", that are in archive members at offsets
  26.    200 and 900, it would look like this:
  27.         16              ; byte count of index table
  28.         0               ; offset of "foo" in string table
  29.         200             ; offset of foo-module in file
  30.         4               ; offset of "bar" in string table
  31.         900             ; offset of bar-module in file
  32.         9               ; byte count of string table
  33.         "foo\0_bar\0"   ; string table  */
  34.  
  35. #define RANLIBMAG       "__.SYMDEF"     /* Archive file name containing index */
  36. #define RANLIBSKEW      3               /* Creation time offset */
  37.  
  38. /* Format of __.SYMDEF:
  39.    First, a longword containing the size of the 'symdef' data that follows.
  40.    Second, zero or more 'symdef' structures.
  41.    Third, a longword containing the length of symbol name strings.
  42.    Fourth, zero or more symbol name strings (each followed by a null).  */
  43.  
  44. struct symdef
  45.   {
  46.     union
  47.       {
  48.         unsigned long string_offset;    /* In the file */
  49.         char *name;                     /* In memory, sometimes */
  50.       } s;
  51.     /* this points to the front of the file header (AKA member header --
  52.        a struct ar_hdr), not to the front of the file or into the file).
  53.        in other words it only tells you which file to read */      
  54.     unsigned long file_offset;
  55.   };
  56.  
  57. /* Compatability with BSD code */
  58.  
  59. #define ranlib  symdef
  60. #define ran_un  s
  61. #define ran_strx string_offset
  62. #define ran_name name
  63. #define ran_off file_offset
  64.