1 /* BFD COFF object file private structure.
2 Copyright (C) 1990, 91, 92, 93, 94, 95, 1996 Free Software Foundation, Inc.
3 Written by Cygnus Support.
5 ** NOTE: libcoff.h is a GENERATED file. Don't change it; instead,
6 ** change libcoff-in.h or coffcode.h.
8 This file is part of BFD, the Binary File Descriptor library.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
26 /* Object file tdata; access macros */
28 #define coff_data(bfd) ((bfd)->tdata.coff_obj_data)
29 #define exec_hdr(bfd) (coff_data(bfd)->hdr)
30 #define obj_pe(bfd) (coff_data(bfd)->pe)
31 #define obj_symbols(bfd) (coff_data(bfd)->symbols)
32 #define obj_sym_filepos(bfd) (coff_data(bfd)->sym_filepos)
34 #define obj_relocbase(bfd) (coff_data(bfd)->relocbase)
35 #define obj_raw_syments(bfd) (coff_data(bfd)->raw_syments)
36 #define obj_raw_syment_count(bfd) (coff_data(bfd)->raw_syment_count)
37 #define obj_convert(bfd) (coff_data(bfd)->conversion_table)
38 #define obj_conv_table_size(bfd) (coff_data(bfd)->conv_table_size)
40 #define obj_coff_external_syms(bfd) (coff_data (bfd)->external_syms)
41 #define obj_coff_keep_syms(bfd) (coff_data (bfd)->keep_syms)
42 #define obj_coff_strings(bfd) (coff_data (bfd)->strings)
43 #define obj_coff_keep_strings(bfd) (coff_data (bfd)->keep_strings)
44 #define obj_coff_sym_hashes(bfd) (coff_data (bfd)->sym_hashes)
46 #define obj_coff_local_toc_table(bfd) (coff_data(bfd)->local_toc_sym_map)
48 /* `Tdata' information kept for COFF files. */
50 typedef struct coff_tdata
52 struct coff_symbol_struct *symbols; /* symtab for input bfd */
53 unsigned int *conversion_table;
57 struct coff_ptr_struct *raw_syments;
58 unsigned int raw_syment_count;
60 /* These are only valid once writing has begun */
63 /* These members communicate important constants about the symbol table
64 to GDB's symbol-reading code. These `constants' unfortunately vary
65 from coff implementation to implementation... */
66 unsigned local_n_btmask;
67 unsigned local_n_btshft;
68 unsigned local_n_tmask;
69 unsigned local_n_tshift;
70 unsigned local_symesz;
71 unsigned local_auxesz;
72 unsigned local_linesz;
74 /* The unswapped external symbols. May be NULL. Read by
75 _bfd_coff_get_external_symbols. */
77 /* If this is true, the external_syms may not be freed. */
80 /* The string table. May be NULL. Read by
81 _bfd_coff_read_string_table. */
83 /* If this is true, the strings may not be freed. */
86 /* is this a PE format coff file */
88 /* Used by the COFF backend linker. */
89 struct coff_link_hash_entry **sym_hashes;
91 /* used by the pe linker for PowerPC */
92 int *local_toc_sym_map;
94 struct bfd_link_info *link_info;
96 /* Used by coff_find_nearest_line. */
100 /* Tdata for pe image files. */
101 typedef struct pe_tdata
104 struct internal_extra_pe_aouthdr pe_opthdr;
106 int has_reloc_section;
107 boolean (*in_reloc_p) PARAMS((bfd *, reloc_howto_type *));
111 #define pe_data(bfd) ((bfd)->tdata.pe_obj_data)
113 /* Tdata for XCOFF files. */
117 /* Basic COFF information. */
120 /* True if a large a.out header should be generated. */
121 boolean full_aouthdr;
126 /* Index of section holding TOC. */
129 /* Index of section holding entry point. */
132 /* .text alignment from optional header. */
133 int text_align_power;
135 /* .data alignment from optional header. */
136 int data_align_power;
138 /* modtype from optional header. */
141 /* cputype from optional header. */
144 /* maxdata from optional header. */
145 bfd_size_type maxdata;
147 /* maxstack from optional header. */
148 bfd_size_type maxstack;
150 /* Used by the XCOFF backend linker. */
152 unsigned long *debug_indices;
153 unsigned int import_file_id;
156 #define xcoff_data(abfd) ((abfd)->tdata.xcoff_obj_data)
158 /* We take the address of the first element of a asymbol to ensure that the
159 * macro is only ever applied to an asymbol. */
160 #define coffsymbol(asymbol) ((coff_symbol_type *)(&((asymbol)->the_bfd)))
162 /* The used_by_bfd field of a section may be set to a pointer to this
165 struct coff_section_tdata
167 /* The relocs, swapped into COFF internal form. This may be NULL. */
168 struct internal_reloc *relocs;
169 /* If this is true, the relocs entry may not be freed. */
171 /* The section contents. This may be NULL. */
173 /* If this is true, the contents entry may not be freed. */
174 boolean keep_contents;
175 /* Information cached by coff_find_nearest_line. */
178 const char *function;
180 /* Available for individual backends. */
184 /* An accessor macro for the coff_section_tdata structure. */
185 #define coff_section_data(abfd, sec) \
186 ((struct coff_section_tdata *) (sec)->used_by_bfd)
188 /* Tdata for sections in XCOFF files. This is used by the linker. */
190 struct xcoff_section_tdata
192 /* Used for XCOFF csects created by the linker; points to the real
193 XCOFF section which contains this csect. */
195 /* The lineno_count field for the enclosing section, because we are
196 going to clobber it there. */
197 unsigned int lineno_count;
198 /* The first and one past the last symbol indices for symbols used
200 unsigned long first_symndx;
201 unsigned long last_symndx;
204 /* An accessor macro the xcoff_section_tdata structure. */
205 #define xcoff_section_data(abfd, sec) \
206 ((struct xcoff_section_tdata *) coff_section_data ((abfd), (sec))->tdata)
208 /* COFF linker hash table entries. */
210 struct coff_link_hash_entry
212 struct bfd_link_hash_entry root;
214 /* Symbol index in output file. Set to -1 initially. Set to -2 if
215 there is a reloc against this symbol. */
224 /* Number of auxiliary entries. */
227 /* BFD to take auxiliary entries from. */
230 /* Pointer to array of auxiliary entries, if any. */
231 union internal_auxent *aux;
234 /* COFF linker hash table. */
236 struct coff_link_hash_table
238 struct bfd_link_hash_table root;
241 /* Look up an entry in a COFF linker hash table. */
243 #define coff_link_hash_lookup(table, string, create, copy, follow) \
244 ((struct coff_link_hash_entry *) \
245 bfd_link_hash_lookup (&(table)->root, (string), (create), \
248 /* Traverse a COFF linker hash table. */
250 #define coff_link_hash_traverse(table, func, info) \
251 (bfd_link_hash_traverse \
253 (boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (func), \
256 /* Get the COFF linker hash table from a link_info structure. */
258 #define coff_hash_table(p) ((struct coff_link_hash_table *) ((p)->hash))
260 /* Functions in coffgen.c. */
261 extern const bfd_target *coff_object_p PARAMS ((bfd *));
262 extern struct sec *coff_section_from_bfd_index PARAMS ((bfd *, int));
263 extern long coff_get_symtab_upper_bound PARAMS ((bfd *));
264 extern long coff_get_symtab PARAMS ((bfd *, asymbol **));
265 extern int coff_count_linenumbers PARAMS ((bfd *));
266 extern struct coff_symbol_struct *coff_symbol_from PARAMS ((bfd *, asymbol *));
267 extern boolean coff_renumber_symbols PARAMS ((bfd *, int *));
268 extern void coff_mangle_symbols PARAMS ((bfd *));
269 extern boolean coff_write_symbols PARAMS ((bfd *));
270 extern boolean coff_write_linenumbers PARAMS ((bfd *));
271 extern alent *coff_get_lineno PARAMS ((bfd *, asymbol *));
272 extern asymbol *coff_section_symbol PARAMS ((bfd *, char *));
273 extern boolean _bfd_coff_get_external_symbols PARAMS ((bfd *));
274 extern const char *_bfd_coff_read_string_table PARAMS ((bfd *));
275 extern boolean _bfd_coff_free_symbols PARAMS ((bfd *));
276 extern struct coff_ptr_struct *coff_get_normalized_symtab PARAMS ((bfd *));
277 extern long coff_get_reloc_upper_bound PARAMS ((bfd *, sec_ptr));
278 extern asymbol *coff_make_empty_symbol PARAMS ((bfd *));
279 extern void coff_print_symbol PARAMS ((bfd *, PTR filep, asymbol *,
280 bfd_print_symbol_type how));
281 extern void coff_get_symbol_info PARAMS ((bfd *, asymbol *,
283 extern asymbol *coff_bfd_make_debug_symbol PARAMS ((bfd *, PTR,
285 extern boolean coff_find_nearest_line PARAMS ((bfd *,
289 CONST char **filename_ptr,
290 CONST char **functionname_ptr,
291 unsigned int *line_ptr));
292 extern int coff_sizeof_headers PARAMS ((bfd *, boolean reloc));
293 extern boolean bfd_coff_reloc16_relax_section
294 PARAMS ((bfd *, asection *, struct bfd_link_info *, boolean *));
295 extern bfd_byte *bfd_coff_reloc16_get_relocated_section_contents
296 PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *,
297 bfd_byte *, boolean relocateable, asymbol **));
298 extern bfd_vma bfd_coff_reloc16_get_value PARAMS ((arelent *,
299 struct bfd_link_info *,
301 extern void bfd_perform_slip PARAMS ((bfd *abfd, unsigned int slip,
302 asection *input_section,
305 /* Functions and types in cofflink.c. */
307 #define STRING_SIZE_SIZE (4)
309 /* We use a hash table to merge identical enum, struct, and union
310 definitions in the linker. */
312 /* Information we keep for a single element (an enum value, a
313 structure or union field) in the debug merge hash table. */
315 struct coff_debug_merge_element
318 struct coff_debug_merge_element *next;
326 /* Symbol index for complex type. */
330 /* A linked list of debug merge entries for a given name. */
332 struct coff_debug_merge_type
334 /* Next type with the same name. */
335 struct coff_debug_merge_type *next;
340 /* Symbol index where this type is defined. */
343 /* List of elements. */
344 struct coff_debug_merge_element *elements;
347 /* Information we store in the debug merge hash table. */
349 struct coff_debug_merge_hash_entry
351 struct bfd_hash_entry root;
353 /* A list of types with this name. */
354 struct coff_debug_merge_type *types;
357 /* The debug merge hash table. */
359 struct coff_debug_merge_hash_table
361 struct bfd_hash_table root;
364 /* Initialize a COFF debug merge hash table. */
366 #define coff_debug_merge_hash_table_init(table) \
367 (bfd_hash_table_init (&(table)->root, _bfd_coff_debug_merge_hash_newfunc))
369 /* Free a COFF debug merge hash table. */
371 #define coff_debug_merge_hash_table_free(table) \
372 (bfd_hash_table_free (&(table)->root))
374 /* Look up an entry in a COFF debug merge hash table. */
376 #define coff_debug_merge_hash_lookup(table, string, create, copy) \
377 ((struct coff_debug_merge_hash_entry *) \
378 bfd_hash_lookup (&(table)->root, (string), (create), (copy)))
380 /* Information we keep for each section in the output file when doing
381 a relocateable link. */
383 struct coff_link_section_info
385 /* The relocs to be output. */
386 struct internal_reloc *relocs;
387 /* For each reloc against a global symbol whose index was not known
388 when the reloc was handled, the global hash table entry. */
389 struct coff_link_hash_entry **rel_hashes;
392 /* Information that we pass around while doing the final link step. */
394 struct coff_final_link_info
396 /* General link information. */
397 struct bfd_link_info *info;
400 /* Used to indicate failure in traversal routine. */
402 /* Hash table for long symbol names. */
403 struct bfd_strtab_hash *strtab;
404 /* When doing a relocateable link, an array of information kept for
405 each output section, indexed by the target_index field. */
406 struct coff_link_section_info *section_info;
407 /* Symbol index of last C_FILE symbol (-1 if none). */
408 long last_file_index;
409 /* Contents of last C_FILE symbol. */
410 struct internal_syment last_file;
411 /* Symbol index of first aux entry of last .bf symbol with an empty
412 endndx field (-1 if none). */
414 /* Contents of last_bf_index aux entry. */
415 union internal_auxent last_bf;
416 /* Hash table used to merge debug information. */
417 struct coff_debug_merge_hash_table debug_merge;
418 /* Buffer large enough to hold swapped symbols of any input file. */
419 struct internal_syment *internal_syms;
420 /* Buffer large enough to hold sections of symbols of any input file. */
422 /* Buffer large enough to hold output indices of symbols of any
425 /* Buffer large enough to hold output symbols for any input file. */
427 /* Buffer large enough to hold external line numbers for any input
430 /* Buffer large enough to hold any input section. */
432 /* Buffer large enough to hold external relocs of any input section. */
433 bfd_byte *external_relocs;
434 /* Buffer large enough to hold swapped relocs of any input section. */
435 struct internal_reloc *internal_relocs;
438 extern struct bfd_hash_entry *_bfd_coff_link_hash_newfunc
439 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
440 extern boolean _bfd_coff_link_hash_table_init
441 PARAMS ((struct coff_link_hash_table *, bfd *,
442 struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
443 struct bfd_hash_table *,
445 extern struct bfd_link_hash_table *_bfd_coff_link_hash_table_create
447 extern const char *_bfd_coff_internal_syment_name
448 PARAMS ((bfd *, const struct internal_syment *, char *));
449 extern boolean _bfd_coff_link_add_symbols
450 PARAMS ((bfd *, struct bfd_link_info *));
451 extern boolean _bfd_coff_final_link
452 PARAMS ((bfd *, struct bfd_link_info *));
453 extern struct internal_reloc *_bfd_coff_read_internal_relocs
454 PARAMS ((bfd *, asection *, boolean, bfd_byte *, boolean,
455 struct internal_reloc *));
456 extern boolean _bfd_coff_generic_relocate_section
457 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
458 struct internal_reloc *, struct internal_syment *, asection **));
460 extern struct bfd_hash_entry *_bfd_coff_debug_merge_hash_newfunc
461 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
462 extern boolean _bfd_coff_write_global_sym
463 PARAMS ((struct coff_link_hash_entry *, PTR));
464 extern boolean _bfd_coff_link_input_bfd
465 PARAMS ((struct coff_final_link_info *, bfd *));
466 extern boolean _bfd_coff_reloc_link_order
467 PARAMS ((bfd *, struct coff_final_link_info *, asection *,
468 struct bfd_link_order *));
471 #define coff_get_section_contents_in_window \
472 _bfd_generic_get_section_contents_in_window
474 /* Functions in xcofflink.c. */
476 extern struct bfd_link_hash_table *_bfd_xcoff_bfd_link_hash_table_create
478 extern boolean _bfd_xcoff_bfd_link_add_symbols
479 PARAMS ((bfd *, struct bfd_link_info *));
480 extern boolean _bfd_xcoff_bfd_final_link
481 PARAMS ((bfd *, struct bfd_link_info *));
482 extern boolean _bfd_ppc_xcoff_relocate_section
483 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
484 struct internal_reloc *, struct internal_syment *, asection **));
486 /* And more taken from the source .. */