include/aout/ranlib.h

   1 /* ranlib.h -- archive library index member definition for GNU.
   2    Copyright 1990-1991  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 2 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., 675 Mass Ave, Cambridge, MA 02139, USA.  */
  17
  18 /* The Symdef member of an archive contains two things:
  19    a table that maps symbol-string offsets to file offsets,
  20    and a symbol-string table.  All the symbol names are
  21    run together (each with trailing null) in the symbol-string
  22    table.  There is a single longword bytecount on the front
  23    of each of these tables.  Thus if we have two symbols,
  24    "foo" and "_bar", that are in archive members at offsets
  25    200 and 900, it would look like this:
  26         16              ; byte count of index table
  27         0               ; offset of "foo" in string table
  28         200             ; offset of foo-module in file
  29         4               ; offset of "bar" in string table
  30         900             ; offset of bar-module in file
  31         9               ; byte count of string table
  32         "foo\0_bar\0"   ; string table  */
  33
  34 #define RANLIBMAG       "__.SYMDEF"     /* Archive file name containing index */
  35 #define RANLIBSKEW      3               /* Creation time offset */
  36
  37 /* Format of __.SYMDEF:
  38    First, a longword containing the size of the 'symdef' data that follows.
  39    Second, zero or more 'symdef' structures.
  40    Third, a longword containing the length of symbol name strings.
  41    Fourth, zero or more symbol name strings (each followed by a null).  */
  42
  43 struct symdef
  44   {
  45     union
  46       {
  47         unsigned long string_offset;    /* In the file */
  48         char *name;                     /* In memory, sometimes */
  49       } s;
  50     /* this points to the front of the file header (AKA member header --
  51        a struct ar_hdr), not to the front of the file or into the file).
  52        in other words it only tells you which file to read */
  53     unsigned long file_offset;
  54   };
  55
  56 /* Compatability with BSD code */
  57
  58 #define ranlib  symdef
  59 #define ran_un  s
  60 #define ran_strx string_offset
  61 #define ran_name name
  62 #define ran_off file_offset