1 /* BFD COFF object file private structure.
2 Copyright (C) 1990, 91, 92, 93, 94, 95, 96, 97, 1998
3 Free Software Foundation, Inc.
4 Written by Cygnus Support.
6 ** NOTE: libcoff.h is a GENERATED file. Don't change it; instead,
7 ** change libcoff-in.h or coffcode.h.
9 This file is part of BFD, the Binary File Descriptor library.
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 2 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program; if not, write to the Free Software
23 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
27 /* Object file tdata; access macros */
29 #define coff_data(bfd) ((bfd)->tdata.coff_obj_data)
30 #define exec_hdr(bfd) (coff_data(bfd)->hdr)
31 #define obj_pe(bfd) (coff_data(bfd)->pe)
32 #define obj_symbols(bfd) (coff_data(bfd)->symbols)
33 #define obj_sym_filepos(bfd) (coff_data(bfd)->sym_filepos)
35 #define obj_relocbase(bfd) (coff_data(bfd)->relocbase)
36 #define obj_raw_syments(bfd) (coff_data(bfd)->raw_syments)
37 #define obj_raw_syment_count(bfd) (coff_data(bfd)->raw_syment_count)
38 #define obj_convert(bfd) (coff_data(bfd)->conversion_table)
39 #define obj_conv_table_size(bfd) (coff_data(bfd)->conv_table_size)
41 #define obj_coff_external_syms(bfd) (coff_data (bfd)->external_syms)
42 #define obj_coff_keep_syms(bfd) (coff_data (bfd)->keep_syms)
43 #define obj_coff_strings(bfd) (coff_data (bfd)->strings)
44 #define obj_coff_keep_strings(bfd) (coff_data (bfd)->keep_strings)
45 #define obj_coff_sym_hashes(bfd) (coff_data (bfd)->sym_hashes)
47 #define obj_coff_local_toc_table(bfd) (coff_data(bfd)->local_toc_sym_map)
49 /* `Tdata' information kept for COFF files. */
51 typedef struct coff_tdata
53 struct coff_symbol_struct *symbols; /* symtab for input bfd */
54 unsigned int *conversion_table;
58 struct coff_ptr_struct *raw_syments;
59 unsigned int raw_syment_count;
61 /* These are only valid once writing has begun */
64 /* These members communicate important constants about the symbol table
65 to GDB's symbol-reading code. These `constants' unfortunately vary
66 from coff implementation to implementation... */
67 unsigned local_n_btmask;
68 unsigned local_n_btshft;
69 unsigned local_n_tmask;
70 unsigned local_n_tshift;
71 unsigned local_symesz;
72 unsigned local_auxesz;
73 unsigned local_linesz;
75 /* The unswapped external symbols. May be NULL. Read by
76 _bfd_coff_get_external_symbols. */
78 /* If this is true, the external_syms may not be freed. */
81 /* The string table. May be NULL. Read by
82 _bfd_coff_read_string_table. */
84 /* If this is true, the strings may not be freed. */
87 /* is this a PE format coff file */
89 /* Used by the COFF backend linker. */
90 struct coff_link_hash_entry **sym_hashes;
92 /* used by the pe linker for PowerPC */
93 int *local_toc_sym_map;
95 struct bfd_link_info *link_info;
97 /* Used by coff_find_nearest_line. */
100 /* Copy of some of the f_flags bits in the COFF filehdr structure,
106 /* Tdata for pe image files. */
107 typedef struct pe_tdata
110 struct internal_extra_pe_aouthdr pe_opthdr;
112 int has_reloc_section;
113 boolean (*in_reloc_p) PARAMS((bfd *, reloc_howto_type *));
117 #define pe_data(bfd) ((bfd)->tdata.pe_obj_data)
119 /* Tdata for XCOFF files. */
123 /* Basic COFF information. */
126 /* True if a large a.out header should be generated. */
127 boolean full_aouthdr;
132 /* Index of section holding TOC. */
135 /* Index of section holding entry point. */
138 /* .text alignment from optional header. */
139 int text_align_power;
141 /* .data alignment from optional header. */
142 int data_align_power;
144 /* modtype from optional header. */
147 /* cputype from optional header. */
150 /* maxdata from optional header. */
151 bfd_size_type maxdata;
153 /* maxstack from optional header. */
154 bfd_size_type maxstack;
156 /* Used by the XCOFF backend linker. */
158 unsigned long *debug_indices;
159 unsigned int import_file_id;
162 #define xcoff_data(abfd) ((abfd)->tdata.xcoff_obj_data)
164 /* We take the address of the first element of a asymbol to ensure that the
165 * macro is only ever applied to an asymbol. */
166 #define coffsymbol(asymbol) ((coff_symbol_type *)(&((asymbol)->the_bfd)))
168 /* The used_by_bfd field of a section may be set to a pointer to this
171 struct coff_section_tdata
173 /* The relocs, swapped into COFF internal form. This may be NULL. */
174 struct internal_reloc *relocs;
175 /* If this is true, the relocs entry may not be freed. */
177 /* The section contents. This may be NULL. */
179 /* If this is true, the contents entry may not be freed. */
180 boolean keep_contents;
181 /* Information cached by coff_find_nearest_line. */
184 const char *function;
186 /* A pointer used for .stab linking optimizations. */
188 /* Available for individual backends. */
192 /* An accessor macro for the coff_section_tdata structure. */
193 #define coff_section_data(abfd, sec) \
194 ((struct coff_section_tdata *) (sec)->used_by_bfd)
196 /* Tdata for sections in XCOFF files. This is used by the linker. */
198 struct xcoff_section_tdata
200 /* Used for XCOFF csects created by the linker; points to the real
201 XCOFF section which contains this csect. */
203 /* The lineno_count field for the enclosing section, because we are
204 going to clobber it there. */
205 unsigned int lineno_count;
206 /* The first and one past the last symbol indices for symbols used
208 unsigned long first_symndx;
209 unsigned long last_symndx;
212 /* An accessor macro the xcoff_section_tdata structure. */
213 #define xcoff_section_data(abfd, sec) \
214 ((struct xcoff_section_tdata *) coff_section_data ((abfd), (sec))->tdata)
216 /* Tdata for sections in PEI image files. */
218 struct pei_section_tdata
220 /* The virtual size of the section. */
221 bfd_size_type virt_size;
224 /* An accessor macro for the pei_section_tdata structure. */
225 #define pei_section_data(abfd, sec) \
226 ((struct pei_section_tdata *) coff_section_data ((abfd), (sec))->tdata)
228 /* COFF linker hash table entries. */
230 struct coff_link_hash_entry
232 struct bfd_link_hash_entry root;
234 /* Symbol index in output file. Set to -1 initially. Set to -2 if
235 there is a reloc against this symbol. */
244 /* Number of auxiliary entries. */
247 /* BFD to take auxiliary entries from. */
250 /* Pointer to array of auxiliary entries, if any. */
251 union internal_auxent *aux;
254 /* COFF linker hash table. */
256 struct coff_link_hash_table
258 struct bfd_link_hash_table root;
259 /* A pointer to information used to link stabs in sections. */
263 /* Look up an entry in a COFF linker hash table. */
265 #define coff_link_hash_lookup(table, string, create, copy, follow) \
266 ((struct coff_link_hash_entry *) \
267 bfd_link_hash_lookup (&(table)->root, (string), (create), \
270 /* Traverse a COFF linker hash table. */
272 #define coff_link_hash_traverse(table, func, info) \
273 (bfd_link_hash_traverse \
275 (boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (func), \
278 /* Get the COFF linker hash table from a link_info structure. */
280 #define coff_hash_table(p) ((struct coff_link_hash_table *) ((p)->hash))
282 /* Functions in coffgen.c. */
283 extern const bfd_target *coff_object_p PARAMS ((bfd *));
284 extern struct sec *coff_section_from_bfd_index PARAMS ((bfd *, int));
285 extern long coff_get_symtab_upper_bound PARAMS ((bfd *));
286 extern long coff_get_symtab PARAMS ((bfd *, asymbol **));
287 extern int coff_count_linenumbers PARAMS ((bfd *));
288 extern struct coff_symbol_struct *coff_symbol_from PARAMS ((bfd *, asymbol *));
289 extern boolean coff_renumber_symbols PARAMS ((bfd *, int *));
290 extern void coff_mangle_symbols PARAMS ((bfd *));
291 extern boolean coff_write_symbols PARAMS ((bfd *));
292 extern boolean coff_write_linenumbers PARAMS ((bfd *));
293 extern alent *coff_get_lineno PARAMS ((bfd *, asymbol *));
294 extern asymbol *coff_section_symbol PARAMS ((bfd *, char *));
295 extern boolean _bfd_coff_get_external_symbols PARAMS ((bfd *));
296 extern const char *_bfd_coff_read_string_table PARAMS ((bfd *));
297 extern boolean _bfd_coff_free_symbols PARAMS ((bfd *));
298 extern struct coff_ptr_struct *coff_get_normalized_symtab PARAMS ((bfd *));
299 extern long coff_get_reloc_upper_bound PARAMS ((bfd *, sec_ptr));
300 extern asymbol *coff_make_empty_symbol PARAMS ((bfd *));
301 extern void coff_print_symbol PARAMS ((bfd *, PTR filep, asymbol *,
302 bfd_print_symbol_type how));
303 extern void coff_get_symbol_info PARAMS ((bfd *, asymbol *,
305 extern boolean _bfd_coff_is_local_label_name PARAMS ((bfd *, const char *));
306 extern asymbol *coff_bfd_make_debug_symbol PARAMS ((bfd *, PTR,
308 extern boolean coff_find_nearest_line PARAMS ((bfd *,
312 CONST char **filename_ptr,
313 CONST char **functionname_ptr,
314 unsigned int *line_ptr));
315 extern int coff_sizeof_headers PARAMS ((bfd *, boolean reloc));
316 extern boolean bfd_coff_reloc16_relax_section
317 PARAMS ((bfd *, asection *, struct bfd_link_info *, boolean *));
318 extern bfd_byte *bfd_coff_reloc16_get_relocated_section_contents
319 PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *,
320 bfd_byte *, boolean relocateable, asymbol **));
321 extern bfd_vma bfd_coff_reloc16_get_value PARAMS ((arelent *,
322 struct bfd_link_info *,
324 extern void bfd_perform_slip PARAMS ((bfd *abfd, unsigned int slip,
325 asection *input_section,
328 /* Functions and types in cofflink.c. */
330 #define STRING_SIZE_SIZE (4)
332 /* We use a hash table to merge identical enum, struct, and union
333 definitions in the linker. */
335 /* Information we keep for a single element (an enum value, a
336 structure or union field) in the debug merge hash table. */
338 struct coff_debug_merge_element
341 struct coff_debug_merge_element *next;
349 /* Symbol index for complex type. */
353 /* A linked list of debug merge entries for a given name. */
355 struct coff_debug_merge_type
357 /* Next type with the same name. */
358 struct coff_debug_merge_type *next;
363 /* Symbol index where this type is defined. */
366 /* List of elements. */
367 struct coff_debug_merge_element *elements;
370 /* Information we store in the debug merge hash table. */
372 struct coff_debug_merge_hash_entry
374 struct bfd_hash_entry root;
376 /* A list of types with this name. */
377 struct coff_debug_merge_type *types;
380 /* The debug merge hash table. */
382 struct coff_debug_merge_hash_table
384 struct bfd_hash_table root;
387 /* Initialize a COFF debug merge hash table. */
389 #define coff_debug_merge_hash_table_init(table) \
390 (bfd_hash_table_init (&(table)->root, _bfd_coff_debug_merge_hash_newfunc))
392 /* Free a COFF debug merge hash table. */
394 #define coff_debug_merge_hash_table_free(table) \
395 (bfd_hash_table_free (&(table)->root))
397 /* Look up an entry in a COFF debug merge hash table. */
399 #define coff_debug_merge_hash_lookup(table, string, create, copy) \
400 ((struct coff_debug_merge_hash_entry *) \
401 bfd_hash_lookup (&(table)->root, (string), (create), (copy)))
403 /* Information we keep for each section in the output file when doing
404 a relocateable link. */
406 struct coff_link_section_info
408 /* The relocs to be output. */
409 struct internal_reloc *relocs;
410 /* For each reloc against a global symbol whose index was not known
411 when the reloc was handled, the global hash table entry. */
412 struct coff_link_hash_entry **rel_hashes;
415 /* Information that we pass around while doing the final link step. */
417 struct coff_final_link_info
419 /* General link information. */
420 struct bfd_link_info *info;
423 /* Used to indicate failure in traversal routine. */
425 /* If doing "task linking" set only during the time when we want the
426 global symbol writer to convert the storage class of defined global
427 symbols from global to static. */
428 boolean global_to_static;
429 /* Hash table for long symbol names. */
430 struct bfd_strtab_hash *strtab;
431 /* When doing a relocateable link, an array of information kept for
432 each output section, indexed by the target_index field. */
433 struct coff_link_section_info *section_info;
434 /* Symbol index of last C_FILE symbol (-1 if none). */
435 long last_file_index;
436 /* Contents of last C_FILE symbol. */
437 struct internal_syment last_file;
438 /* Symbol index of first aux entry of last .bf symbol with an empty
439 endndx field (-1 if none). */
441 /* Contents of last_bf_index aux entry. */
442 union internal_auxent last_bf;
443 /* Hash table used to merge debug information. */
444 struct coff_debug_merge_hash_table debug_merge;
445 /* Buffer large enough to hold swapped symbols of any input file. */
446 struct internal_syment *internal_syms;
447 /* Buffer large enough to hold sections of symbols of any input file. */
449 /* Buffer large enough to hold output indices of symbols of any
452 /* Buffer large enough to hold output symbols for any input file. */
454 /* Buffer large enough to hold external line numbers for any input
457 /* Buffer large enough to hold any input section. */
459 /* Buffer large enough to hold external relocs of any input section. */
460 bfd_byte *external_relocs;
461 /* Buffer large enough to hold swapped relocs of any input section. */
462 struct internal_reloc *internal_relocs;
465 extern struct bfd_hash_entry *_bfd_coff_link_hash_newfunc
466 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
467 extern boolean _bfd_coff_link_hash_table_init
468 PARAMS ((struct coff_link_hash_table *, bfd *,
469 struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
470 struct bfd_hash_table *,
472 extern struct bfd_link_hash_table *_bfd_coff_link_hash_table_create
474 extern const char *_bfd_coff_internal_syment_name
475 PARAMS ((bfd *, const struct internal_syment *, char *));
476 extern boolean _bfd_coff_link_add_symbols
477 PARAMS ((bfd *, struct bfd_link_info *));
478 extern boolean _bfd_coff_final_link
479 PARAMS ((bfd *, struct bfd_link_info *));
480 extern struct internal_reloc *_bfd_coff_read_internal_relocs
481 PARAMS ((bfd *, asection *, boolean, bfd_byte *, boolean,
482 struct internal_reloc *));
483 extern boolean _bfd_coff_generic_relocate_section
484 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
485 struct internal_reloc *, struct internal_syment *, asection **));
487 extern struct bfd_hash_entry *_bfd_coff_debug_merge_hash_newfunc
488 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
489 extern boolean _bfd_coff_write_global_sym
490 PARAMS ((struct coff_link_hash_entry *, PTR));
491 extern boolean _bfd_coff_write_task_globals
492 PARAMS ((struct coff_link_hash_entry *, PTR));
493 extern boolean _bfd_coff_link_input_bfd
494 PARAMS ((struct coff_final_link_info *, bfd *));
495 extern boolean _bfd_coff_reloc_link_order
496 PARAMS ((bfd *, struct coff_final_link_info *, asection *,
497 struct bfd_link_order *));
500 #define coff_get_section_contents_in_window \
501 _bfd_generic_get_section_contents_in_window
503 /* Functions in xcofflink.c. */
505 extern long _bfd_xcoff_get_dynamic_symtab_upper_bound PARAMS ((bfd *));
506 extern long _bfd_xcoff_canonicalize_dynamic_symtab
507 PARAMS ((bfd *, asymbol **));
508 extern long _bfd_xcoff_get_dynamic_reloc_upper_bound PARAMS ((bfd *));
509 extern long _bfd_xcoff_canonicalize_dynamic_reloc
510 PARAMS ((bfd *, arelent **, asymbol **));
511 extern struct bfd_link_hash_table *_bfd_xcoff_bfd_link_hash_table_create
513 extern boolean _bfd_xcoff_bfd_link_add_symbols
514 PARAMS ((bfd *, struct bfd_link_info *));
515 extern boolean _bfd_xcoff_bfd_final_link
516 PARAMS ((bfd *, struct bfd_link_info *));
517 extern boolean _bfd_ppc_xcoff_relocate_section
518 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
519 struct internal_reloc *, struct internal_syment *, asection **));
521 /* Functions in coff-ppc.c. FIXME: These are called be pe.em in the
522 linker, and so should start with bfd and be declared in bfd.h. */
524 extern boolean ppc_allocate_toc_section PARAMS ((struct bfd_link_info *));
525 extern boolean ppc_process_before_allocation
526 PARAMS ((bfd *, struct bfd_link_info *));
528 /* And more taken from the source .. */