1 /* BFD COFF object file private structure.
2 Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
4 Free Software Foundation, Inc.
5 Written by Cygnus Support.
7 ** NOTE: libcoff.h is a GENERATED file. Don't change it; instead,
8 ** change libcoff-in.h or coffcode.h.
10 This file is part of BFD, the Binary File Descriptor library.
12 This program is free software; you can redistribute it and/or modify
13 it under the terms of the GNU General Public License as published by
14 the Free Software Foundation; either version 2 of the License, or
15 (at your option) any later version.
17 This program is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 GNU General Public License for more details.
22 You should have received a copy of the GNU General Public License
23 along with this program; if not, write to the Free Software
24 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
28 /* Object file tdata; access macros */
30 #define coff_data(bfd) ((bfd)->tdata.coff_obj_data)
31 #define exec_hdr(bfd) (coff_data(bfd)->hdr)
32 #define obj_pe(bfd) (coff_data(bfd)->pe)
33 #define obj_symbols(bfd) (coff_data(bfd)->symbols)
34 #define obj_sym_filepos(bfd) (coff_data(bfd)->sym_filepos)
36 #define obj_relocbase(bfd) (coff_data(bfd)->relocbase)
37 #define obj_raw_syments(bfd) (coff_data(bfd)->raw_syments)
38 #define obj_raw_syment_count(bfd) (coff_data(bfd)->raw_syment_count)
39 #define obj_convert(bfd) (coff_data(bfd)->conversion_table)
40 #define obj_conv_table_size(bfd) (coff_data(bfd)->conv_table_size)
42 #define obj_coff_external_syms(bfd) (coff_data (bfd)->external_syms)
43 #define obj_coff_keep_syms(bfd) (coff_data (bfd)->keep_syms)
44 #define obj_coff_strings(bfd) (coff_data (bfd)->strings)
45 #define obj_coff_keep_strings(bfd) (coff_data (bfd)->keep_strings)
46 #define obj_coff_sym_hashes(bfd) (coff_data (bfd)->sym_hashes)
47 #define obj_coff_strings_written(bfd) (coff_data (bfd)->strings_written)
49 #define obj_coff_local_toc_table(bfd) (coff_data(bfd)->local_toc_sym_map)
51 /* `Tdata' information kept for COFF files. */
53 typedef struct coff_tdata
55 struct coff_symbol_struct
*symbols
; /* symtab for input bfd */
56 unsigned int *conversion_table
;
60 struct coff_ptr_struct
*raw_syments
;
61 unsigned long raw_syment_count
;
63 /* These are only valid once writing has begun */
66 /* These members communicate important constants about the symbol table
67 to GDB's symbol-reading code. These `constants' unfortunately vary
68 from coff implementation to implementation... */
69 unsigned local_n_btmask
;
70 unsigned local_n_btshft
;
71 unsigned local_n_tmask
;
72 unsigned local_n_tshift
;
73 unsigned local_symesz
;
74 unsigned local_auxesz
;
75 unsigned local_linesz
;
77 /* The unswapped external symbols. May be NULL. Read by
78 _bfd_coff_get_external_symbols. */
80 /* If this is true, the external_syms may not be freed. */
83 /* The string table. May be NULL. Read by
84 _bfd_coff_read_string_table. */
86 /* If this is true, the strings may not be freed. */
88 /* If this is true, the strings have been written out already. */
89 boolean strings_written
;
91 /* is this a PE format coff file */
93 /* Used by the COFF backend linker. */
94 struct coff_link_hash_entry
**sym_hashes
;
96 /* used by the pe linker for PowerPC */
97 int *local_toc_sym_map
;
99 struct bfd_link_info
*link_info
;
101 /* Used by coff_find_nearest_line. */
104 /* A place to stash dwarf2 info for this bfd. */
105 PTR dwarf2_find_line_info
;
107 /* The timestamp from the COFF file header. */
110 /* Copy of some of the f_flags bits in the COFF filehdr structure,
116 /* Tdata for pe image files. */
117 typedef struct pe_tdata
120 struct internal_extra_pe_aouthdr pe_opthdr
;
122 int has_reloc_section
;
123 boolean (*in_reloc_p
) PARAMS((bfd
*, reloc_howto_type
*));
125 int target_subsystem
;
126 boolean force_minimum_alignment
;
129 #define pe_data(bfd) ((bfd)->tdata.pe_obj_data)
131 /* Tdata for XCOFF files. */
135 /* Basic COFF information. */
138 /* True if this is an XCOFF64 file. */
141 /* True if a large a.out header should be generated. */
142 boolean full_aouthdr
;
147 /* Index of section holding TOC. */
150 /* Index of section holding entry point. */
153 /* .text alignment from optional header. */
154 int text_align_power
;
156 /* .data alignment from optional header. */
157 int data_align_power
;
159 /* modtype from optional header. */
162 /* cputype from optional header. */
165 /* maxdata from optional header. */
168 /* maxstack from optional header. */
171 /* Used by the XCOFF backend linker. */
173 unsigned long *debug_indices
;
174 unsigned int import_file_id
;
177 #define xcoff_data(abfd) ((abfd)->tdata.xcoff_obj_data)
179 /* We take the address of the first element of a asymbol to ensure that the
180 * macro is only ever applied to an asymbol. */
181 #define coffsymbol(asymbol) ((coff_symbol_type *)(&((asymbol)->the_bfd)))
183 /* The used_by_bfd field of a section may be set to a pointer to this
186 struct coff_section_tdata
188 /* The relocs, swapped into COFF internal form. This may be NULL. */
189 struct internal_reloc
*relocs
;
190 /* If this is true, the relocs entry may not be freed. */
192 /* The section contents. This may be NULL. */
194 /* If this is true, the contents entry may not be freed. */
195 boolean keep_contents
;
196 /* Information cached by coff_find_nearest_line. */
199 const char *function
;
201 /* A pointer used for .stab linking optimizations. */
203 /* Available for individual backends. */
207 /* An accessor macro for the coff_section_tdata structure. */
208 #define coff_section_data(abfd, sec) \
209 ((struct coff_section_tdata *) (sec)->used_by_bfd)
211 /* Tdata for sections in XCOFF files. This is used by the linker. */
213 struct xcoff_section_tdata
215 /* Used for XCOFF csects created by the linker; points to the real
216 XCOFF section which contains this csect. */
218 /* The lineno_count field for the enclosing section, because we are
219 going to clobber it there. */
220 unsigned int lineno_count
;
221 /* The first and one past the last symbol indices for symbols used
223 unsigned long first_symndx
;
224 unsigned long last_symndx
;
227 /* An accessor macro the xcoff_section_tdata structure. */
228 #define xcoff_section_data(abfd, sec) \
229 ((struct xcoff_section_tdata *) coff_section_data ((abfd), (sec))->tdata)
231 /* Tdata for sections in PE files. */
233 struct pei_section_tdata
235 /* The virtual size of the section. */
236 bfd_size_type virt_size
;
237 /* The PE section flags. */
241 /* An accessor macro for the pei_section_tdata structure. */
242 #define pei_section_data(abfd, sec) \
243 ((struct pei_section_tdata *) coff_section_data ((abfd), (sec))->tdata)
245 /* COFF linker hash table entries. */
247 struct coff_link_hash_entry
249 struct bfd_link_hash_entry root
;
251 /* Symbol index in output file. Set to -1 initially. Set to -2 if
252 there is a reloc against this symbol. */
261 /* Number of auxiliary entries. */
264 /* BFD to take auxiliary entries from. */
267 /* Pointer to array of auxiliary entries, if any. */
268 union internal_auxent
*aux
;
270 /* Flag word; legal values follow. */
271 unsigned short coff_link_hash_flags
;
272 /* Symbol is a PE section symbol. */
273 #define COFF_LINK_HASH_PE_SECTION_SYMBOL (01)
276 /* COFF linker hash table. */
278 struct coff_link_hash_table
280 struct bfd_link_hash_table root
;
281 /* A pointer to information used to link stabs in sections. */
285 /* Look up an entry in a COFF linker hash table. */
287 #define coff_link_hash_lookup(table, string, create, copy, follow) \
288 ((struct coff_link_hash_entry *) \
289 bfd_link_hash_lookup (&(table)->root, (string), (create), \
292 /* Traverse a COFF linker hash table. */
294 #define coff_link_hash_traverse(table, func, info) \
295 (bfd_link_hash_traverse \
297 (boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (func), \
300 /* Get the COFF linker hash table from a link_info structure. */
302 #define coff_hash_table(p) ((struct coff_link_hash_table *) ((p)->hash))
304 /* Functions in coffgen.c. */
305 extern const bfd_target
*coff_object_p
PARAMS ((bfd
*));
306 extern struct sec
*coff_section_from_bfd_index
PARAMS ((bfd
*, int));
307 extern long coff_get_symtab_upper_bound
PARAMS ((bfd
*));
308 extern long coff_get_symtab
PARAMS ((bfd
*, asymbol
**));
309 extern int coff_count_linenumbers
PARAMS ((bfd
*));
310 extern struct coff_symbol_struct
*coff_symbol_from
PARAMS ((bfd
*, asymbol
*));
311 extern boolean coff_renumber_symbols
PARAMS ((bfd
*, int *));
312 extern void coff_mangle_symbols
PARAMS ((bfd
*));
313 extern boolean coff_write_symbols
PARAMS ((bfd
*));
314 extern boolean coff_write_linenumbers
PARAMS ((bfd
*));
315 extern alent
*coff_get_lineno
PARAMS ((bfd
*, asymbol
*));
316 extern asymbol
*coff_section_symbol
PARAMS ((bfd
*, char *));
317 extern boolean _bfd_coff_get_external_symbols
PARAMS ((bfd
*));
318 extern const char *_bfd_coff_read_string_table
PARAMS ((bfd
*));
319 extern boolean _bfd_coff_free_symbols
PARAMS ((bfd
*));
320 extern struct coff_ptr_struct
*coff_get_normalized_symtab
PARAMS ((bfd
*));
321 extern long coff_get_reloc_upper_bound
PARAMS ((bfd
*, sec_ptr
));
322 extern asymbol
*coff_make_empty_symbol
PARAMS ((bfd
*));
323 extern void coff_print_symbol
PARAMS ((bfd
*, PTR filep
, asymbol
*,
324 bfd_print_symbol_type how
));
325 extern void coff_get_symbol_info
PARAMS ((bfd
*, asymbol
*,
327 extern boolean _bfd_coff_is_local_label_name
PARAMS ((bfd
*, const char *));
328 extern asymbol
*coff_bfd_make_debug_symbol
PARAMS ((bfd
*, PTR
,
330 extern boolean coff_find_nearest_line
PARAMS ((bfd
*,
334 CONST
char **filename_ptr
,
335 CONST
char **functionname_ptr
,
336 unsigned int *line_ptr
));
337 extern int coff_sizeof_headers
PARAMS ((bfd
*, boolean reloc
));
338 extern boolean bfd_coff_reloc16_relax_section
339 PARAMS ((bfd
*, asection
*, struct bfd_link_info
*, boolean
*));
340 extern bfd_byte
*bfd_coff_reloc16_get_relocated_section_contents
341 PARAMS ((bfd
*, struct bfd_link_info
*, struct bfd_link_order
*,
342 bfd_byte
*, boolean relocateable
, asymbol
**));
343 extern bfd_vma bfd_coff_reloc16_get_value
PARAMS ((arelent
*,
344 struct bfd_link_info
*,
346 extern void bfd_perform_slip
PARAMS ((bfd
*abfd
, unsigned int slip
,
347 asection
*input_section
,
350 /* Functions and types in cofflink.c. */
352 #define STRING_SIZE_SIZE (4)
354 /* We use a hash table to merge identical enum, struct, and union
355 definitions in the linker. */
357 /* Information we keep for a single element (an enum value, a
358 structure or union field) in the debug merge hash table. */
360 struct coff_debug_merge_element
363 struct coff_debug_merge_element
*next
;
371 /* Symbol index for complex type. */
375 /* A linked list of debug merge entries for a given name. */
377 struct coff_debug_merge_type
379 /* Next type with the same name. */
380 struct coff_debug_merge_type
*next
;
385 /* Symbol index where this type is defined. */
388 /* List of elements. */
389 struct coff_debug_merge_element
*elements
;
392 /* Information we store in the debug merge hash table. */
394 struct coff_debug_merge_hash_entry
396 struct bfd_hash_entry root
;
398 /* A list of types with this name. */
399 struct coff_debug_merge_type
*types
;
402 /* The debug merge hash table. */
404 struct coff_debug_merge_hash_table
406 struct bfd_hash_table root
;
409 /* Initialize a COFF debug merge hash table. */
411 #define coff_debug_merge_hash_table_init(table) \
412 (bfd_hash_table_init (&(table)->root, _bfd_coff_debug_merge_hash_newfunc))
414 /* Free a COFF debug merge hash table. */
416 #define coff_debug_merge_hash_table_free(table) \
417 (bfd_hash_table_free (&(table)->root))
419 /* Look up an entry in a COFF debug merge hash table. */
421 #define coff_debug_merge_hash_lookup(table, string, create, copy) \
422 ((struct coff_debug_merge_hash_entry *) \
423 bfd_hash_lookup (&(table)->root, (string), (create), (copy)))
425 /* Information we keep for each section in the output file when doing
426 a relocateable link. */
428 struct coff_link_section_info
430 /* The relocs to be output. */
431 struct internal_reloc
*relocs
;
432 /* For each reloc against a global symbol whose index was not known
433 when the reloc was handled, the global hash table entry. */
434 struct coff_link_hash_entry
**rel_hashes
;
437 /* Information that we pass around while doing the final link step. */
439 struct coff_final_link_info
441 /* General link information. */
442 struct bfd_link_info
*info
;
445 /* Used to indicate failure in traversal routine. */
447 /* If doing "task linking" set only during the time when we want the
448 global symbol writer to convert the storage class of defined global
449 symbols from global to static. */
450 boolean global_to_static
;
451 /* Hash table for long symbol names. */
452 struct bfd_strtab_hash
*strtab
;
453 /* When doing a relocateable link, an array of information kept for
454 each output section, indexed by the target_index field. */
455 struct coff_link_section_info
*section_info
;
456 /* Symbol index of last C_FILE symbol (-1 if none). */
457 long last_file_index
;
458 /* Contents of last C_FILE symbol. */
459 struct internal_syment last_file
;
460 /* Symbol index of first aux entry of last .bf symbol with an empty
461 endndx field (-1 if none). */
463 /* Contents of last_bf_index aux entry. */
464 union internal_auxent last_bf
;
465 /* Hash table used to merge debug information. */
466 struct coff_debug_merge_hash_table debug_merge
;
467 /* Buffer large enough to hold swapped symbols of any input file. */
468 struct internal_syment
*internal_syms
;
469 /* Buffer large enough to hold sections of symbols of any input file. */
471 /* Buffer large enough to hold output indices of symbols of any
474 /* Buffer large enough to hold output symbols for any input file. */
476 /* Buffer large enough to hold external line numbers for any input
479 /* Buffer large enough to hold any input section. */
481 /* Buffer large enough to hold external relocs of any input section. */
482 bfd_byte
*external_relocs
;
483 /* Buffer large enough to hold swapped relocs of any input section. */
484 struct internal_reloc
*internal_relocs
;
487 /* Most COFF variants have no way to record the alignment of a
488 section. This struct is used to set a specific alignment based on
489 the name of the section. */
491 struct coff_section_alignment_entry
493 /* The section name. */
496 /* This is either (unsigned int) -1, indicating that the section
497 name must match exactly, or it is the number of letters which
498 must match at the start of the name. */
499 unsigned int comparison_length
;
501 /* These macros may be used to fill in the first two fields in a
502 structure initialization. */
503 #define COFF_SECTION_NAME_EXACT_MATCH(name) (name), ((unsigned int) -1)
504 #define COFF_SECTION_NAME_PARTIAL_MATCH(name) (name), (sizeof (name) - 1)
506 /* Only use this entry if the default section alignment for this
507 target is at least that much (as a power of two). If this field
508 is COFF_ALIGNMENT_FIELD_EMPTY, it should be ignored. */
509 unsigned int default_alignment_min
;
511 /* Only use this entry if the default section alignment for this
512 target is no greater than this (as a power of two). If this
513 field is COFF_ALIGNMENT_FIELD_EMPTY, it should be ignored. */
514 unsigned int default_alignment_max
;
516 #define COFF_ALIGNMENT_FIELD_EMPTY ((unsigned int) -1)
518 /* The desired alignment for this section (as a power of two). */
519 unsigned int alignment_power
;
522 extern struct bfd_hash_entry
*_bfd_coff_link_hash_newfunc
523 PARAMS ((struct bfd_hash_entry
*, struct bfd_hash_table
*, const char *));
524 extern boolean _bfd_coff_link_hash_table_init
525 PARAMS ((struct coff_link_hash_table
*, bfd
*,
526 struct bfd_hash_entry
*(*) (struct bfd_hash_entry
*,
527 struct bfd_hash_table
*,
529 extern struct bfd_link_hash_table
*_bfd_coff_link_hash_table_create
531 extern const char *_bfd_coff_internal_syment_name
532 PARAMS ((bfd
*, const struct internal_syment
*, char *));
533 extern boolean _bfd_coff_link_add_symbols
534 PARAMS ((bfd
*, struct bfd_link_info
*));
535 extern boolean _bfd_coff_final_link
536 PARAMS ((bfd
*, struct bfd_link_info
*));
537 extern struct internal_reloc
*_bfd_coff_read_internal_relocs
538 PARAMS ((bfd
*, asection
*, boolean
, bfd_byte
*, boolean
,
539 struct internal_reloc
*));
540 extern boolean _bfd_coff_generic_relocate_section
541 PARAMS ((bfd
*, struct bfd_link_info
*, bfd
*, asection
*, bfd_byte
*,
542 struct internal_reloc
*, struct internal_syment
*, asection
**));
544 extern struct bfd_hash_entry
*_bfd_coff_debug_merge_hash_newfunc
545 PARAMS ((struct bfd_hash_entry
*, struct bfd_hash_table
*, const char *));
546 extern boolean _bfd_coff_write_global_sym
547 PARAMS ((struct coff_link_hash_entry
*, PTR
));
548 extern boolean _bfd_coff_write_task_globals
549 PARAMS ((struct coff_link_hash_entry
*, PTR
));
550 extern boolean _bfd_coff_link_input_bfd
551 PARAMS ((struct coff_final_link_info
*, bfd
*));
552 extern boolean _bfd_coff_reloc_link_order
553 PARAMS ((bfd
*, struct coff_final_link_info
*, asection
*,
554 struct bfd_link_order
*));
557 #define coff_get_section_contents_in_window \
558 _bfd_generic_get_section_contents_in_window
560 /* Functions in xcofflink.c. */
562 extern long _bfd_xcoff_get_dynamic_symtab_upper_bound
PARAMS ((bfd
*));
563 extern long _bfd_xcoff_canonicalize_dynamic_symtab
564 PARAMS ((bfd
*, asymbol
**));
565 extern long _bfd_xcoff_get_dynamic_reloc_upper_bound
PARAMS ((bfd
*));
566 extern long _bfd_xcoff_canonicalize_dynamic_reloc
567 PARAMS ((bfd
*, arelent
**, asymbol
**));
568 extern struct bfd_link_hash_table
*_bfd_xcoff_bfd_link_hash_table_create
570 extern boolean _bfd_xcoff_bfd_link_add_symbols
571 PARAMS ((bfd
*, struct bfd_link_info
*));
572 extern boolean _bfd_xcoff_bfd_final_link
573 PARAMS ((bfd
*, struct bfd_link_info
*));
574 extern boolean _bfd_ppc_xcoff_relocate_section
575 PARAMS ((bfd
*, struct bfd_link_info
*, bfd
*, asection
*, bfd_byte
*,
576 struct internal_reloc
*, struct internal_syment
*, asection
**));
578 /* Functions in coff-ppc.c. FIXME: These are called be pe.em in the
579 linker, and so should start with bfd and be declared in bfd.h. */
581 extern boolean ppc_allocate_toc_section
PARAMS ((struct bfd_link_info
*));
582 extern boolean ppc_process_before_allocation
583 PARAMS ((bfd
*, struct bfd_link_info
*));
585 /* And more taken from the source .. */