1 /* BFD COFF object file private structure.
2 Copyright (C) 1990-1991 Free Software Foundation, Inc.
3 Written by Cygnus Support.
5 This file is part of BFD, the Binary File Descriptor library.
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.
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.
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. */
22 /* Object file tdata; access macros */
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)
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)
34 /* `Tdata' information kept for COFF files. */
36 typedef struct coff_tdata
38 struct coff_symbol_struct *symbols; /* symtab for input bfd */
39 unsigned int *conversion_table;
42 long symbol_index_slew; /* used during read to mark whether a
43 C_FILE symbol as been added. */
45 struct coff_ptr_struct *raw_syments;
46 struct lineno *raw_linenos;
47 unsigned int raw_syment_count;
50 /* These are only valid once writing has begun */
53 /* These members communicate important constants about the symbol table
54 to GDB's symbol-reading code. These `constants' unfortunately vary
55 from coff implementation to implementation... */
56 unsigned local_n_btmask;
57 unsigned local_n_btshft;
58 unsigned local_n_tmask;
59 unsigned local_n_tshift;
60 unsigned local_symesz;
61 unsigned local_auxesz;
62 unsigned local_linesz;
65 /* We take the address of the first element of a asymbol to ensure that the
66 * macro is only ever applied to an asymbol. */
67 #define coffsymbol(asymbol) ((coff_symbol_type *)(&((asymbol)->the_bfd)))
71 /*THE FOLLOWING IS EXTRACTED FROM THE SOURCE*/
76 The hidden information for an asymbol is:
79 typedef struct coff_ptr_struct
83 Remembers the offset from the first symbol in the file for this
84 symbol. Generated by @code{coff_renumber_symbols}.
90 Should the tag field of this symbol be renumbered.
91 Created by @code{coff_pointerize_aux}.
97 Should the endidx field of this symbol be renumbered.
98 Created by @code{coff_pointerize_aux}.
104 The container for the symbol structure as read and translated from the file.
108 union internal_auxent auxent;
109 struct internal_syment syment;
111 } combined_entry_type;
115 Each canonical asymbol really looks like this:
118 typedef struct coff_symbol_struct
122 The actual symbol which the rest of BFD works with
128 A pointer to the hidden information for this symbol
131 combined_entry_type *native;
134 A pointer to the linenumber information for this symbol
137 struct lineno_cache_entry *lineno;