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)          ((bfd)->tdata.coff_obj_data)
  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 #define obj_conv_table_size(bfd) (coff_data(bfd)->conv_table_size)
  33 #if CFILE_STUFF
  34 #define obj_symbol_slew(bfd)    (coff_data(bfd)->symbol_index_slew)
  35 #else
  36 #define obj_symbol_slew(bfd) 0
  37 #endif
  38
  39
  40 /* `Tdata' information kept for COFF files.  */
  41
  42 typedef struct coff_tdata
  43 {
  44   struct   coff_symbol_struct *symbols; /* symtab for input bfd */
  45   unsigned int *conversion_table;
  46   int conv_table_size;
  47   file_ptr sym_filepos;
  48
  49   long symbol_index_slew;       /* used during read to mark whether a
  50                                    C_FILE symbol as been added. */
  51
  52   struct coff_ptr_struct *raw_syments;
  53   struct lineno *raw_linenos;
  54   unsigned int raw_syment_count;
  55   unsigned short flags;
  56
  57   /* These are only valid once writing has begun */
  58   long int relocbase;
  59
  60   /* These members communicate important constants about the symbol table
  61      to GDB's symbol-reading code.  These `constants' unfortunately vary
  62      from coff implementation to implementation...  */
  63   unsigned local_n_btmask;
  64   unsigned local_n_btshft;
  65   unsigned local_n_tmask;
  66   unsigned local_n_tshift;
  67   unsigned local_symesz;
  68   unsigned local_auxesz;
  69   unsigned local_linesz;
  70 } coff_data_type;
  71
  72 /* We take the address of the first element of a asymbol to ensure that the
  73  * macro is only ever applied to an asymbol.  */
  74 #define coffsymbol(asymbol) ((coff_symbol_type *)(&((asymbol)->the_bfd)))
  75
  76 /* Functions in coffgen.c.  */
  77 extern bfd_target *coff_object_p PARAMS ((bfd *));
  78 extern struct sec *coff_section_from_bfd_index PARAMS ((bfd *, int));
  79 extern unsigned int coff_get_symtab_upper_bound PARAMS ((bfd *));
  80 extern unsigned int coff_get_symtab PARAMS ((bfd *, asymbol **));
  81 extern void coff_count_linenumbers PARAMS ((bfd *));
  82 extern struct coff_symbol_struct *coff_symbol_from PARAMS ((bfd *, asymbol *));
  83 extern void coff_renumber_symbols PARAMS ((bfd *));
  84 extern void coff_mangle_symbols PARAMS ((bfd *));
  85 extern void coff_write_symbols PARAMS ((bfd *));
  86 extern void coff_write_linenumbers PARAMS ((bfd *));
  87 extern alent *coff_get_lineno PARAMS ((bfd *, asymbol *));
  88 extern asymbol *coff_section_symbol PARAMS ((bfd *, char *));
  89 extern struct coff_ptr_struct *coff_get_normalized_symtab PARAMS ((bfd *));
  90 extern unsigned int coff_get_reloc_upper_bound PARAMS ((bfd *, sec_ptr));
  91 extern asymbol *coff_make_empty_symbol PARAMS ((bfd *));
  92 extern void coff_print_symbol PARAMS ((bfd *, PTR filep, asymbol *,
  93                                        bfd_print_symbol_type how));
  94 extern asymbol *coff_make_debug_symbol PARAMS ((bfd *, PTR, unsigned long));
  95 extern boolean coff_find_nearest_line PARAMS ((bfd *,
  96                                                asection *,
  97                                                asymbol **,
  98                                                bfd_vma offset,
  99                                                CONST char **filename_ptr,
 100                                                CONST char **functionname_ptr,
 101                                                unsigned int *line_ptr));
 102 extern int coff_sizeof_headers PARAMS ((bfd *, boolean reloc));
 103 extern boolean bfd_coff_reloc16_relax_section PARAMS ((bfd *,
 104                                                        asection *,
 105                                                        asymbol **));
 106 extern bfd_byte *bfd_coff_reloc16_get_relocated_section_contents
 107   PARAMS ((bfd *, bfd_seclet_type *, bfd_byte *));
 108 extern bfd_vma bfd_coff_reloc16_get_value PARAMS ((arelent *,
 109                                                    bfd_seclet_type *));
 110
 111 /* And more taken from the source .. */
 112
 113 typedef struct coff_ptr_struct
 114 {
 115
 116         /* Remembers the offset from the first symbol in the file for
 117           this symbol. Generated by coff_renumber_symbols. */
 118 unsigned int offset;
 119
 120         /* Should the tag field of this symbol be renumbered.
 121           Created by coff_pointerize_aux. */
 122 char fix_tag;
 123
 124         /* Should the endidx field of this symbol be renumbered.
 125           Created by coff_pointerize_aux. */
 126 char fix_end;
 127
 128         /* The container for the symbol structure as read and translated
 129            from the file. */
 130
 131 union {
 132    union internal_auxent auxent;
 133    struct internal_syment syment;
 134  } u;
 135 } combined_entry_type;
 136
 137
 138  /* Each canonical asymbol really looks like this: */
 139
 140 typedef struct coff_symbol_struct
 141 {
 142     /* The actual symbol which the rest of BFD works with */
 143 asymbol symbol;
 144
 145     /* A pointer to the hidden information for this symbol */
 146 combined_entry_type *native;
 147
 148     /* A pointer to the linenumber information for this symbol */
 149 struct lineno_cache_entry *lineno;
 150
 151     /* Have the line numbers been relocated yet ? */
 152 boolean done_lineno;
 153 } coff_symbol_type;
 154 typedef struct
 155 {
 156   void (*_bfd_coff_swap_aux_in) PARAMS ((
 157        bfd            *abfd ,
 158        PTR             ext,
 159        int             type,
 160        int             class ,
 161        PTR             in));
 162
 163   void (*_bfd_coff_swap_sym_in) PARAMS ((
 164        bfd            *abfd ,
 165        PTR             ext,
 166        PTR             in));
 167
 168   void (*_bfd_coff_swap_lineno_in) PARAMS ((
 169        bfd            *abfd,
 170        PTR            ext,
 171        PTR             in));
 172
 173  unsigned int (*_bfd_coff_swap_aux_out) PARAMS ((
 174        bfd      *abfd,
 175        PTR      in,
 176        int      type,
 177        int      class,
 178        PTR      ext));
 179
 180  unsigned int (*_bfd_coff_swap_sym_out) PARAMS ((
 181       bfd      *abfd,
 182       PTR       in,
 183       PTR       ext));
 184
 185  unsigned int (*_bfd_coff_swap_lineno_out) PARAMS ((
 186         bfd     *abfd,
 187         PTR     in,
 188         PTR     ext));
 189
 190  unsigned int (*_bfd_coff_swap_reloc_out) PARAMS ((
 191         bfd     *abfd,
 192         PTR     src,
 193         PTR     dst));
 194
 195  unsigned int (*_bfd_coff_swap_filehdr_out) PARAMS ((
 196         bfd     *abfd,
 197         PTR     in,
 198         PTR     out));
 199
 200  unsigned int (*_bfd_coff_swap_aouthdr_out) PARAMS ((
 201         bfd     *abfd,
 202         PTR     in,
 203         PTR     out));
 204
 205  unsigned int (*_bfd_coff_swap_scnhdr_out) PARAMS ((
 206         bfd     *abfd,
 207         PTR     in,
 208         PTR     out));
 209
 210  unsigned int _bfd_filhsz;
 211  unsigned int _bfd_aoutsz;
 212  unsigned int _bfd_scnhsz;
 213  unsigned int _bfd_symesz;
 214  unsigned int _bfd_auxesz;
 215  unsigned int _bfd_linesz;
 216  boolean _bfd_coff_long_filenames;
 217  void (*_bfd_coff_swap_filehdr_in) PARAMS ((
 218        bfd     *abfd,
 219        PTR     ext,
 220        PTR     in));
 221  void (*_bfd_coff_swap_aouthdr_in) PARAMS ((
 222        bfd     *abfd,
 223        PTR     ext,
 224        PTR     in));
 225  void (*_bfd_coff_swap_scnhdr_in) PARAMS ((
 226        bfd     *abfd,
 227        PTR     ext,
 228        PTR     in));
 229  boolean (*_bfd_coff_bad_format_hook) PARAMS ((
 230        bfd     *abfd,
 231        PTR     internal_filehdr));
 232  boolean (*_bfd_coff_set_arch_mach_hook) PARAMS ((
 233        bfd     *abfd,
 234        PTR     internal_filehdr));
 235  PTR (*_bfd_coff_mkobject_hook) PARAMS ((
 236        bfd     *abfd,
 237        PTR     internal_filehdr));
 238  flagword (*_bfd_styp_to_sec_flags_hook) PARAMS ((
 239        bfd     *abfd,
 240        PTR     internal_scnhdr));
 241  asection *(*_bfd_make_section_hook) PARAMS ((
 242        bfd     *abfd,
 243        char    *name));
 244  void (*_bfd_set_alignment_hook) PARAMS ((
 245        bfd     *abfd,
 246        asection *sec,
 247        PTR     internal_scnhdr));
 248  boolean (*_bfd_coff_slurp_symbol_table) PARAMS ((
 249        bfd     *abfd));
 250  boolean (*_bfd_coff_symname_in_debug) PARAMS ((
 251        bfd     *abfd,
 252        struct internal_syment *sym));
 253  void (*_bfd_coff_reloc16_extra_cases) PARAMS ((
 254        bfd     *abfd,
 255        bfd_seclet_type *seclet,
 256        arelent *reloc,
 257        bfd_byte *data,
 258        unsigned int *src_ptr,
 259        unsigned int *dst_ptr));
 260 } bfd_coff_backend_data;
 261
 262 #define coff_backend_info(abfd) ((bfd_coff_backend_data *) (abfd)->xvec->backend_data)
 263
 264 #define bfd_coff_swap_aux_in(a,e,t,c,i) \
 265         ((coff_backend_info (a)->_bfd_coff_swap_aux_in) (a,e,t,c,i))
 266
 267 #define bfd_coff_swap_sym_in(a,e,i) \
 268         ((coff_backend_info (a)->_bfd_coff_swap_sym_in) (a,e,i))
 269
 270 #define bfd_coff_swap_lineno_in(a,e,i) \
 271         ((coff_backend_info ( a)->_bfd_coff_swap_lineno_in) (a,e,i))
 272
 273 #define bfd_coff_swap_reloc_out(abfd, i, o) \
 274         ((coff_backend_info (abfd)->_bfd_coff_swap_reloc_out) (abfd, i, o))
 275
 276 #define bfd_coff_swap_lineno_out(abfd, i, o) \
 277         ((coff_backend_info (abfd)->_bfd_coff_swap_lineno_out) (abfd, i, o))
 278
 279 #define bfd_coff_swap_aux_out(abfd, i, t,c,o) \
 280         ((coff_backend_info (abfd)->_bfd_coff_swap_aux_out) (abfd, i,t,c, o))
 281
 282 #define bfd_coff_swap_sym_out(abfd, i,o) \
 283         ((coff_backend_info (abfd)->_bfd_coff_swap_sym_out) (abfd, i, o))
 284
 285 #define bfd_coff_swap_scnhdr_out(abfd, i,o) \
 286         ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_out) (abfd, i, o))
 287
 288 #define bfd_coff_swap_filehdr_out(abfd, i,o) \
 289         ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_out) (abfd, i, o))
 290
 291 #define bfd_coff_swap_aouthdr_out(abfd, i,o) \
 292         ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_out) (abfd, i, o))
 293
 294 #define bfd_coff_filhsz(abfd) (coff_backend_info (abfd)->_bfd_filhsz)
 295 #define bfd_coff_aoutsz(abfd) (coff_backend_info (abfd)->_bfd_aoutsz)
 296 #define bfd_coff_scnhsz(abfd) (coff_backend_info (abfd)->_bfd_scnhsz)
 297 #define bfd_coff_symesz(abfd) (coff_backend_info (abfd)->_bfd_symesz)
 298 #define bfd_coff_auxesz(abfd) (coff_backend_info (abfd)->_bfd_auxesz)
 299 #define bfd_coff_linesz(abfd) (coff_backend_info (abfd)->_bfd_linesz)
 300 #define bfd_coff_long_filenames(abfd) (coff_backend_info (abfd)->_bfd_coff_long_filenames)
 301 #define bfd_coff_swap_filehdr_in(abfd, i,o) \
 302         ((coff_backend_info (abfd)->_bfd_coff_swap_filehdr_in) (abfd, i, o))
 303
 304 #define bfd_coff_swap_aouthdr_in(abfd, i,o) \
 305         ((coff_backend_info (abfd)->_bfd_coff_swap_aouthdr_in) (abfd, i, o))
 306
 307 #define bfd_coff_swap_scnhdr_in(abfd, i,o) \
 308         ((coff_backend_info (abfd)->_bfd_coff_swap_scnhdr_in) (abfd, i, o))
 309
 310 #define bfd_coff_bad_format_hook(abfd, filehdr) \
 311         ((coff_backend_info (abfd)->_bfd_coff_bad_format_hook) (abfd, filehdr))
 312
 313 #define bfd_coff_set_arch_mach_hook(abfd, filehdr)\
 314         ((coff_backend_info (abfd)->_bfd_coff_set_arch_mach_hook) (abfd, filehdr))
 315 #define bfd_coff_mkobject_hook(abfd, filehdr)\
 316         ((coff_backend_info (abfd)->_bfd_coff_mkobject_hook) (abfd, filehdr))
 317
 318 #define bfd_coff_styp_to_sec_flags_hook(abfd, scnhdr)\
 319         ((coff_backend_info (abfd)->_bfd_styp_to_sec_flags_hook) (abfd, scnhdr))
 320
 321 #define bfd_coff_make_section_hook(abfd, name)\
 322         ((coff_backend_info (abfd)->_bfd_make_section_hook) (abfd, name))
 323
 324 #define bfd_coff_set_alignment_hook(abfd, sec, scnhdr)\
 325         ((coff_backend_info (abfd)->_bfd_set_alignment_hook) (abfd, sec, scnhdr))
 326
 327 #define bfd_coff_slurp_symbol_table(abfd)\
 328         ((coff_backend_info (abfd)->_bfd_coff_slurp_symbol_table) (abfd))
 329
 330 #define bfd_coff_symname_in_debug(abfd, sym)\
 331         ((coff_backend_info (abfd)->_bfd_coff_symname_in_debug) (abfd, sym))
 332
 333 #define bfd_coff_reloc16_extra_cases(abfd, seclet, reloc, data, src_ptr, dst_ptr)\
 334         ((coff_backend_info (abfd)->_bfd_coff_reloc16_extra_cases)\
 335          (abfd, seclet, reloc, data, src_ptr, dst_ptr))
 336