include/aout/ranlib.h

   1 /* ranlib.h -- archive library index member definition for GNU.
   2    Copyright (C) 1990-2017 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