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 /* $Id$ */
  22
  23 /* Object file tdata; access macros */
  24
  25 #define obj_icof(bfd)           ((struct icofdata *) ((bfd)->tdata))
  26 #define coff_data(bfd)          ((struct icofdata *) ((bfd)->tdata))
  27 #define exec_hdr(bfd)           (obj_icof(bfd)->hdr)
  28 #define obj_symbols(bfd)        (obj_icof(bfd)->symbols)
  29 #define obj_sym_filepos(bfd)    (obj_icof(bfd)->sym_filepos)
  30
  31 #define obj_relocbase(bfd)      (obj_icof(bfd)->relocbase)
  32 #define obj_raw_syments(bfd)    (obj_icof(bfd)->raw_syments)
  33 #define obj_convert(bfd)        (obj_icof(bfd)->conversion_table)
  34 #if CFILE_STUFF
  35 #define obj_symbol_slew(bfd)    (obj_icof(bfd)->symbol_index_slew)
  36 #else
  37 #define obj_symbol_slew(bfd) 0
  38 #endif
  39 #define obj_string_table(bfd)   (obj_icof(bfd)->string_table)
  40
  41 #if 0
  42 typedef struct coff_ptr_struct
  43 {
  44   unsigned int offset;
  45   char fix_tag;
  46   char fix_end;
  47   union {
  48     union internal_auxent auxent;
  49     struct internal_syment syment;
  50   } u;
  51 } combined_entry_type;
  52
  53
  54 typedef struct
  55 {
  56   asymbol symbol;
  57   combined_entry_type *native;
  58   struct lineno_cache_entry *lineno;
  59 } coff_symbol_type;
  60 #endif
  61
  62 typedef struct icofdata
  63 {
  64
  65 struct   coff_symbol_struct *symbols;   /* symtab for input bfd */
  66   unsigned int *conversion_table;
  67   file_ptr sym_filepos;
  68
  69   long symbol_index_slew;       /* used during read to mark whether a
  70                                    C_FILE symbol as been added. */
  71
  72 struct coff_ptr_struct *raw_syments;
  73   struct lineno *raw_linenos;
  74   unsigned int raw_syment_count;
  75   char *string_table;
  76   unsigned short flags;
  77   /* These are only valid once writing has begun */
  78   long int relocbase;
  79 } coff_data_type;
  80
  81 /* We take the address of the first element of a asymbol to ensure that the
  82  * macro is only ever applied to an asymbol.  */
  83 #define coffsymbol(asymbol) ((coff_symbol_type *)(&((asymbol)->the_bfd)))
  84
  85
  86
  87 /*THE FOLLOWING IS EXTRACTED FROM THE SOURCE*/
  88
  89 /* FROM coffcode.h*/
  90 /* ------------------------------START FROM coffcode.h
  91
  92 The hidden information for an asymbol is:
  93 */
  94
  95  typedef struct coff_ptr_struct
  96  {
  97
  98 /*
  99 Remembers the offset from the first symbol in the file for this
 100 symbol. Generated by @code{coff_renumber_symbols}.
 101 */
 102
 103    unsigned int offset;
 104
 105 /*
 106 Should the tag field of this symbol be renumbered.
 107 Created by @code{coff_pointerize_aux}.
 108 */
 109
 110    char fix_tag;
 111
 112 /*
 113 Should the endidx field of this symbol be renumbered.
 114 Created by @code{coff_pointerize_aux}.
 115 */
 116
 117    char fix_end;
 118
 119 /*
 120 The container for the symbol structure as read and translated from the file.
 121 */
 122
 123    union {
 124      union internal_auxent auxent;
 125      struct internal_syment syment;
 126    } u;
 127  } combined_entry_type;
 128
 129 /*
 130
 131 Each canonical asymbol really looks like this:
 132 */
 133
 134  typedef struct coff_symbol_struct
 135  {
 136
 137 /*
 138 The actual symbol which the rest of BFD works with
 139 */
 140
 141    asymbol symbol;
 142
 143 /*
 144 A pointer to the hidden information for this symbol
 145 */
 146
 147    combined_entry_type *native;
 148
 149 /*
 150 A pointer to the linenumber information for this symbol
 151 */
 152
 153    struct lineno_cache_entry *lineno;
 154  } coff_symbol_type;
 155
 156 /*
 157
 158  --------------------------------END FROM coffcode.h*/
 159
 160
 161