bfd/libcoff.h

   1 /* BFD COFF object file private structure.
   2    Copyright (C) 1990-1991 Free Software Foundation, Inc.
   3    Written by Cygnus Support.
   4
   5 This file is part of BFD, the Binary File Descriptor library.
   6
   7 This program is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2 of the License, or
  10 (at your option) any later version.
  11
  12 This program is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with this program; if not, write to the Free Software
  19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
  20
  21
  22 /* Object file tdata; access macros */
  23
  24 #define coff_data(bfd)          ((coff_data_type *) ((bfd)->tdata))
  25 #define exec_hdr(bfd)           (coff_data(bfd)->hdr)
  26 #define obj_symbols(bfd)        (coff_data(bfd)->symbols)
  27 #define obj_sym_filepos(bfd)    (coff_data(bfd)->sym_filepos)
  28
  29 #define obj_relocbase(bfd)      (coff_data(bfd)->relocbase)
  30 #define obj_raw_syments(bfd)    (coff_data(bfd)->raw_syments)
  31 #define obj_convert(bfd)        (coff_data(bfd)->conversion_table)
  32 #if CFILE_STUFF
  33 #define obj_symbol_slew(bfd)    (coff_data(bfd)->symbol_index_slew)
  34 #else
  35 #define obj_symbol_slew(bfd) 0
  36 #endif
  37
  38 #if 0
  39 typedef struct coff_ptr_struct
  40 {
  41   unsigned int offset;
  42   char fix_tag;
  43   char fix_end;
  44   union {
  45     union internal_auxent auxent;
  46     struct internal_syment syment;
  47   } u;
  48 } combined_entry_type;
  49
  50
  51 typedef struct
  52 {
  53   asymbol symbol;
  54   combined_entry_type *native;
  55   struct lineno_cache_entry *lineno;
  56 } coff_symbol_type;
  57 #endif
  58
  59 /* `Tdata' information kept for COFF files.  */
  60
  61 typedef struct coff_tdata
  62 {
  63   struct   coff_symbol_struct *symbols; /* symtab for input bfd */
  64   unsigned int *conversion_table;
  65   file_ptr sym_filepos;
  66
  67   long symbol_index_slew;       /* used during read to mark whether a
  68                                    C_FILE symbol as been added. */
  69
  70   struct coff_ptr_struct *raw_syments;
  71   struct lineno *raw_linenos;
  72   unsigned int raw_syment_count;
  73   unsigned short flags;
  74
  75   /* These are only valid once writing has begun */
  76   long int relocbase;
  77
  78   /* These members communicate important constants about the symbol table
  79      to GDB's symbol-reading code.  These `constants' unfortunately vary
  80      from coff implementation to implementation...  */
  81   unsigned local_n_btmask;
  82   unsigned local_n_btshft;
  83   unsigned local_n_tmask;
  84   unsigned local_n_tshift;
  85   unsigned local_symesz;
  86   unsigned local_auxesz;
  87   unsigned local_linesz;
  88 } coff_data_type;
  89
  90 /* We take the address of the first element of a asymbol to ensure that the
  91  * macro is only ever applied to an asymbol.  */
  92 #define coffsymbol(asymbol) ((coff_symbol_type *)(&((asymbol)->the_bfd)))
  93
  94
  95
  96 /*THE FOLLOWING IS EXTRACTED FROM THE SOURCE*/
  97
  98 /*:coffcode.h*/
  99 typedef struct coff_ptr_struct
 100 {
 101 unsigned int offset;
 102 char fix_tag;
 103 char fix_end;
 104 union {
 105    union internal_auxent auxent;
 106    struct internal_syment syment;
 107  } u;
 108 } combined_entry_type;
 109 typedef struct coff_symbol_struct
 110 {
 111 asymbol symbol;
 112 combined_entry_type *native;
 113 struct lineno_cache_entry *lineno;
 114 } coff_symbol_type;
 115