bfd/libaout.h

   1 /* Copyright (C) 1990, 1991 Free Software Foundation, Inc.
   2
   3 This file is part of BFD, the Binary File Diddler.
   4
   5 BFD is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU General Public License as published by
   7 the Free Software Foundation; either version 1, or (at your option)
   8 any later version.
   9
  10 BFD is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with BFD; see the file COPYING.  If not, write to
  17 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
  18
  19 /* $Id$ */
  20
  21 /* BFD back-end data structures for a.out (and similar) files.
  22
  23    We try to encapsulate the differences in a few routines, and otherwise
  24    share large masses of code.  This means we only have to fix bugs in
  25    one place, most of the time.  */
  26
  27 /** a.out files */
  28
  29 #define exec_hdr(bfd) (((struct sunexdata *) ((bfd)->tdata))->hdr)
  30 /*#define obj_symbols(bfd) ((((struct sunexdata *) ((bfd)->tdata))->symbols))*/
  31 #define obj_textsec(bfd)  (((struct sunexdata *) ((bfd)->tdata))->textsec)
  32 #define obj_datasec(bfd)  (((struct sunexdata *) ((bfd)->tdata))->datasec)
  33 #define obj_bsssec(bfd)  (((struct sunexdata *) ((bfd)->tdata))->bsssec)
  34 #define obj_sym_filepos(bfd) (((struct sunexdata *) ((bfd)->tdata))->sym_filepos)
  35 #define obj_str_filepos(bfd) (((struct sunexdata *) ((bfd)->tdata))->str_filepos)
  36
  37
  38
  39 typedef struct {
  40   asymbol symbol;
  41   short desc;
  42 char other;
  43 unsigned char type;
  44 } aout_symbol_type;
  45
  46
  47 struct sunexdata {
  48   struct exec *hdr;               /* exec file header */
  49   aout_symbol_type *symbols;            /* symtab for input bfd */
  50
  51
  52   /* For ease, we do this */
  53   asection *textsec;
  54   asection *datasec;
  55   asection *bsssec;
  56
  57   /* We remember these offsets so that after check_file_format, we have
  58      no dependencies on the particular format of the exec_hdr.  */
  59   file_ptr sym_filepos;
  60   file_ptr str_filepos;
  61 };
  62
  63
  64 #define obj_outsymbols(bfd) ((void *)(((struct sunexdata *) ((bfd)->tdata))->outsymbols))
  65
  66
  67
  68 /* We case the address of the first element of a asymbol to ensure that the
  69  * macro is only every applied to an asymbol
  70  */
  71 #define aout_symbol(asymbol) ((aout_symbol_type *)(&(asymbol)->the_bfd))
  72
  73 /*#define obj_symbols(bfd) ((((struct sunexdata *) ((bfd)->tdata))->symbols))*/
  74 #define obj_aout_symbols(bfd) ((((struct sunexdata *) (bfd)->tdata))->symbols)
  75 #define obj_arch_flags(bfd) ((((struct sunexdata *) (bfd)->tdata))->arch_flags)
  76
  77 #define get_tdata(x)  ((struct sunexdata *)((x)->tdata))
  78 #define set_tdata(x,y)  ((x)->tdata = (void *) (y))
  79
  80