1 /* BFD COFF object file private structure.
2 Copyright (C) 1990, 91, 92, 93, 94, 95, 96, 97, 98, 1999
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)
46 #define obj_coff_strings_written(bfd) (coff_data (bfd)->strings_written)
48 #define obj_coff_local_toc_table(bfd) (coff_data(bfd)->local_toc_sym_map)
50 /* `Tdata' information kept for COFF files. */
52 typedef struct coff_tdata
54 struct coff_symbol_struct
*symbols
; /* symtab for input bfd */
55 unsigned int *conversion_table
;
59 struct coff_ptr_struct
*raw_syments
;
60 unsigned long raw_syment_count
;
62 /* These are only valid once writing has begun */
65 /* These members communicate important constants about the symbol table
66 to GDB's symbol-reading code. These `constants' unfortunately vary
67 from coff implementation to implementation... */
68 unsigned local_n_btmask
;
69 unsigned local_n_btshft
;
70 unsigned local_n_tmask
;
71 unsigned local_n_tshift
;
72 unsigned local_symesz
;
73 unsigned local_auxesz
;
74 unsigned local_linesz
;
76 /* The unswapped external symbols. May be NULL. Read by
77 _bfd_coff_get_external_symbols. */
79 /* If this is true, the external_syms may not be freed. */
82 /* The string table. May be NULL. Read by
83 _bfd_coff_read_string_table. */
85 /* If this is true, the strings may not be freed. */
87 /* If this is true, the strings have been written out already. */
88 boolean strings_written
;
90 /* is this a PE format coff file */
92 /* Used by the COFF backend linker. */
93 struct coff_link_hash_entry
**sym_hashes
;
95 /* used by the pe linker for PowerPC */
96 int *local_toc_sym_map
;
98 struct bfd_link_info
*link_info
;
100 /* Used by coff_find_nearest_line. */
103 /* The timestamp from the COFF file header. */
106 /* Copy of some of the f_flags bits in the COFF filehdr structure,
112 /* Tdata for pe image files. */
113 typedef struct pe_tdata
116 struct internal_extra_pe_aouthdr pe_opthdr
;
118 int has_reloc_section
;
119 boolean (*in_reloc_p
) PARAMS((bfd
*, reloc_howto_type
*));
123 #define pe_data(bfd) ((bfd)->tdata.pe_obj_data)
125 /* Tdata for XCOFF files. */
129 /* Basic COFF information. */
132 /* True if this is an XCOFF64 file. */
135 /* True if a large a.out header should be generated. */
136 boolean full_aouthdr
;
141 /* Index of section holding TOC. */
144 /* Index of section holding entry point. */
147 /* .text alignment from optional header. */
148 int text_align_power
;
150 /* .data alignment from optional header. */
151 int data_align_power
;
153 /* modtype from optional header. */
156 /* cputype from optional header. */
159 /* maxdata from optional header. */
160 bfd_size_type maxdata
;
162 /* maxstack from optional header. */
163 bfd_size_type maxstack
;
165 /* Used by the XCOFF backend linker. */
167 unsigned long *debug_indices
;
168 unsigned int import_file_id
;
171 #define xcoff_data(abfd) ((abfd)->tdata.xcoff_obj_data)
173 /* We take the address of the first element of a asymbol to ensure that the
174 * macro is only ever applied to an asymbol. */
175 #define coffsymbol(asymbol) ((coff_symbol_type *)(&((asymbol)->the_bfd)))
177 /* The used_by_bfd field of a section may be set to a pointer to this
180 struct coff_section_tdata
182 /* The relocs, swapped into COFF internal form. This may be NULL. */
183 struct internal_reloc
*relocs
;
184 /* If this is true, the relocs entry may not be freed. */
186 /* The section contents. This may be NULL. */
188 /* If this is true, the contents entry may not be freed. */
189 boolean keep_contents
;
190 /* Information cached by coff_find_nearest_line. */
193 const char *function
;
195 /* A pointer used for .stab linking optimizations. */
197 /* Available for individual backends. */
201 /* An accessor macro for the coff_section_tdata structure. */
202 #define coff_section_data(abfd, sec) \
203 ((struct coff_section_tdata *) (sec)->used_by_bfd)
205 /* Tdata for sections in XCOFF files. This is used by the linker. */
207 struct xcoff_section_tdata
209 /* Used for XCOFF csects created by the linker; points to the real
210 XCOFF section which contains this csect. */
212 /* The lineno_count field for the enclosing section, because we are
213 going to clobber it there. */
214 unsigned int lineno_count
;
215 /* The first and one past the last symbol indices for symbols used
217 unsigned long first_symndx
;
218 unsigned long last_symndx
;
221 /* An accessor macro the xcoff_section_tdata structure. */
222 #define xcoff_section_data(abfd, sec) \
223 ((struct xcoff_section_tdata *) coff_section_data ((abfd), (sec))->tdata)
225 /* Tdata for sections in PE files. */
227 struct pei_section_tdata
229 /* The virtual size of the section. */
230 bfd_size_type virt_size
;
231 /* The PE section flags. */
235 /* An accessor macro for the pei_section_tdata structure. */
236 #define pei_section_data(abfd, sec) \
237 ((struct pei_section_tdata *) coff_section_data ((abfd), (sec))->tdata)
239 /* COFF linker hash table entries. */
241 struct coff_link_hash_entry
243 struct bfd_link_hash_entry root
;
245 /* Symbol index in output file. Set to -1 initially. Set to -2 if
246 there is a reloc against this symbol. */
255 /* Number of auxiliary entries. */
258 /* BFD to take auxiliary entries from. */
261 /* Pointer to array of auxiliary entries, if any. */
262 union internal_auxent
*aux
;
264 /* Flag word; legal values follow. */
265 unsigned short coff_link_hash_flags
;
266 /* Symbol is a PE section symbol. */
267 #define COFF_LINK_HASH_PE_SECTION_SYMBOL (01)
270 /* COFF linker hash table. */
272 struct coff_link_hash_table
274 struct bfd_link_hash_table root
;
275 /* A pointer to information used to link stabs in sections. */
279 /* Look up an entry in a COFF linker hash table. */
281 #define coff_link_hash_lookup(table, string, create, copy, follow) \
282 ((struct coff_link_hash_entry *) \
283 bfd_link_hash_lookup (&(table)->root, (string), (create), \
286 /* Traverse a COFF linker hash table. */
288 #define coff_link_hash_traverse(table, func, info) \
289 (bfd_link_hash_traverse \
291 (boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (func), \
294 /* Get the COFF linker hash table from a link_info structure. */
296 #define coff_hash_table(p) ((struct coff_link_hash_table *) ((p)->hash))
298 /* Functions in coffgen.c. */
299 extern const bfd_target
*coff_object_p
PARAMS ((bfd
*));
300 extern struct sec
*coff_section_from_bfd_index
PARAMS ((bfd
*, int));
301 extern long coff_get_symtab_upper_bound
PARAMS ((bfd
*));
302 extern long coff_get_symtab
PARAMS ((bfd
*, asymbol
**));
303 extern int coff_count_linenumbers
PARAMS ((bfd
*));
304 extern struct coff_symbol_struct
*coff_symbol_from
PARAMS ((bfd
*, asymbol
*));
305 extern boolean coff_renumber_symbols
PARAMS ((bfd
*, int *));
306 extern void coff_mangle_symbols
PARAMS ((bfd
*));
307 extern boolean coff_write_symbols
PARAMS ((bfd
*));
308 extern boolean coff_write_linenumbers
PARAMS ((bfd
*));
309 extern alent
*coff_get_lineno
PARAMS ((bfd
*, asymbol
*));
310 extern asymbol
*coff_section_symbol
PARAMS ((bfd
*, char *));
311 extern boolean _bfd_coff_get_external_symbols
PARAMS ((bfd
*));
312 extern const char *_bfd_coff_read_string_table
PARAMS ((bfd
*));
313 extern boolean _bfd_coff_free_symbols
PARAMS ((bfd
*));
314 extern struct coff_ptr_struct
*coff_get_normalized_symtab
PARAMS ((bfd
*));
315 extern long coff_get_reloc_upper_bound
PARAMS ((bfd
*, sec_ptr
));
316 extern asymbol
*coff_make_empty_symbol
PARAMS ((bfd
*));
317 extern void coff_print_symbol
PARAMS ((bfd
*, PTR filep
, asymbol
*,
318 bfd_print_symbol_type how
));
319 extern void coff_get_symbol_info
PARAMS ((bfd
*, asymbol
*,
321 extern boolean _bfd_coff_is_local_label_name
PARAMS ((bfd
*, const char *));
322 extern asymbol
*coff_bfd_make_debug_symbol
PARAMS ((bfd
*, PTR
,
324 extern boolean coff_find_nearest_line
PARAMS ((bfd
*,
328 CONST
char **filename_ptr
,
329 CONST
char **functionname_ptr
,
330 unsigned int *line_ptr
));
331 extern int coff_sizeof_headers
PARAMS ((bfd
*, boolean reloc
));
332 extern boolean bfd_coff_reloc16_relax_section
333 PARAMS ((bfd
*, asection
*, struct bfd_link_info
*, boolean
*));
334 extern bfd_byte
*bfd_coff_reloc16_get_relocated_section_contents
335 PARAMS ((bfd
*, struct bfd_link_info
*, struct bfd_link_order
*,
336 bfd_byte
*, boolean relocateable
, asymbol
**));
337 extern bfd_vma bfd_coff_reloc16_get_value
PARAMS ((arelent
*,
338 struct bfd_link_info
*,
340 extern void bfd_perform_slip
PARAMS ((bfd
*abfd
, unsigned int slip
,
341 asection
*input_section
,
344 /* Functions and types in cofflink.c. */
346 #define STRING_SIZE_SIZE (4)
348 /* We use a hash table to merge identical enum, struct, and union
349 definitions in the linker. */
351 /* Information we keep for a single element (an enum value, a
352 structure or union field) in the debug merge hash table. */
354 struct coff_debug_merge_element
357 struct coff_debug_merge_element
*next
;
365 /* Symbol index for complex type. */
369 /* A linked list of debug merge entries for a given name. */
371 struct coff_debug_merge_type
373 /* Next type with the same name. */
374 struct coff_debug_merge_type
*next
;
379 /* Symbol index where this type is defined. */
382 /* List of elements. */
383 struct coff_debug_merge_element
*elements
;
386 /* Information we store in the debug merge hash table. */
388 struct coff_debug_merge_hash_entry
390 struct bfd_hash_entry root
;
392 /* A list of types with this name. */
393 struct coff_debug_merge_type
*types
;
396 /* The debug merge hash table. */
398 struct coff_debug_merge_hash_table
400 struct bfd_hash_table root
;
403 /* Initialize a COFF debug merge hash table. */
405 #define coff_debug_merge_hash_table_init(table) \
406 (bfd_hash_table_init (&(table)->root, _bfd_coff_debug_merge_hash_newfunc))
408 /* Free a COFF debug merge hash table. */
410 #define coff_debug_merge_hash_table_free(table) \
411 (bfd_hash_table_free (&(table)->root))
413 /* Look up an entry in a COFF debug merge hash table. */
415 #define coff_debug_merge_hash_lookup(table, string, create, copy) \
416 ((struct coff_debug_merge_hash_entry *) \
417 bfd_hash_lookup (&(table)->root, (string), (create), (copy)))
419 /* Information we keep for each section in the output file when doing
420 a relocateable link. */
422 struct coff_link_section_info
424 /* The relocs to be output. */
425 struct internal_reloc
*relocs
;
426 /* For each reloc against a global symbol whose index was not known
427 when the reloc was handled, the global hash table entry. */
428 struct coff_link_hash_entry
**rel_hashes
;
431 /* Information that we pass around while doing the final link step. */
433 struct coff_final_link_info
435 /* General link information. */
436 struct bfd_link_info
*info
;
439 /* Used to indicate failure in traversal routine. */
441 /* If doing "task linking" set only during the time when we want the
442 global symbol writer to convert the storage class of defined global
443 symbols from global to static. */
444 boolean global_to_static
;
445 /* Hash table for long symbol names. */
446 struct bfd_strtab_hash
*strtab
;
447 /* When doing a relocateable link, an array of information kept for
448 each output section, indexed by the target_index field. */
449 struct coff_link_section_info
*section_info
;
450 /* Symbol index of last C_FILE symbol (-1 if none). */
451 long last_file_index
;
452 /* Contents of last C_FILE symbol. */
453 struct internal_syment last_file
;
454 /* Symbol index of first aux entry of last .bf symbol with an empty
455 endndx field (-1 if none). */
457 /* Contents of last_bf_index aux entry. */
458 union internal_auxent last_bf
;
459 /* Hash table used to merge debug information. */
460 struct coff_debug_merge_hash_table debug_merge
;
461 /* Buffer large enough to hold swapped symbols of any input file. */
462 struct internal_syment
*internal_syms
;
463 /* Buffer large enough to hold sections of symbols of any input file. */
465 /* Buffer large enough to hold output indices of symbols of any
468 /* Buffer large enough to hold output symbols for any input file. */
470 /* Buffer large enough to hold external line numbers for any input
473 /* Buffer large enough to hold any input section. */
475 /* Buffer large enough to hold external relocs of any input section. */
476 bfd_byte
*external_relocs
;
477 /* Buffer large enough to hold swapped relocs of any input section. */
478 struct internal_reloc
*internal_relocs
;
481 /* Most COFF variants have no way to record the alignment of a
482 section. This struct is used to set a specific alignment based on
483 the name of the section. */
485 struct coff_section_alignment_entry
487 /* The section name. */
490 /* This is either (unsigned int) -1, indicating that the section
491 name must match exactly, or it is the number of letters which
492 must match at the start of the name. */
493 unsigned int comparison_length
;
495 /* These macros may be used to fill in the first two fields in a
496 structure initialization. */
497 #define COFF_SECTION_NAME_EXACT_MATCH(name) (name), ((unsigned int) -1)
498 #define COFF_SECTION_NAME_PARTIAL_MATCH(name) (name), (sizeof (name) - 1)
500 /* Only use this entry if the default section alignment for this
501 target is at least that much (as a power of two). If this field
502 is COFF_ALIGNMENT_FIELD_EMPTY, it should be ignored. */
503 unsigned int default_alignment_min
;
505 /* Only use this entry if the default section alignment for this
506 target is no greater than this (as a power of two). If this
507 field is COFF_ALIGNMENT_FIELD_EMPTY, it should be ignored. */
508 unsigned int default_alignment_max
;
510 #define COFF_ALIGNMENT_FIELD_EMPTY ((unsigned int) -1)
512 /* The desired alignment for this section (as a power of two). */
513 unsigned int alignment_power
;
516 extern struct bfd_hash_entry
*_bfd_coff_link_hash_newfunc
517 PARAMS ((struct bfd_hash_entry
*, struct bfd_hash_table
*, const char *));
518 extern boolean _bfd_coff_link_hash_table_init
519 PARAMS ((struct coff_link_hash_table
*, bfd
*,
520 struct bfd_hash_entry
*(*) (struct bfd_hash_entry
*,
521 struct bfd_hash_table
*,
523 extern struct bfd_link_hash_table
*_bfd_coff_link_hash_table_create
525 extern const char *_bfd_coff_internal_syment_name
526 PARAMS ((bfd
*, const struct internal_syment
*, char *));
527 extern boolean _bfd_coff_link_add_symbols
528 PARAMS ((bfd
*, struct bfd_link_info
*));
529 extern boolean _bfd_coff_final_link
530 PARAMS ((bfd
*, struct bfd_link_info
*));
531 extern struct internal_reloc
*_bfd_coff_read_internal_relocs
532 PARAMS ((bfd
*, asection
*, boolean
, bfd_byte
*, boolean
,
533 struct internal_reloc
*));
534 extern boolean _bfd_coff_generic_relocate_section
535 PARAMS ((bfd
*, struct bfd_link_info
*, bfd
*, asection
*, bfd_byte
*,
536 struct internal_reloc
*, struct internal_syment
*, asection
**));
538 extern struct bfd_hash_entry
*_bfd_coff_debug_merge_hash_newfunc
539 PARAMS ((struct bfd_hash_entry
*, struct bfd_hash_table
*, const char *));
540 extern boolean _bfd_coff_write_global_sym
541 PARAMS ((struct coff_link_hash_entry
*, PTR
));
542 extern boolean _bfd_coff_write_task_globals
543 PARAMS ((struct coff_link_hash_entry
*, PTR
));
544 extern boolean _bfd_coff_link_input_bfd
545 PARAMS ((struct coff_final_link_info
*, bfd
*));
546 extern boolean _bfd_coff_reloc_link_order
547 PARAMS ((bfd
*, struct coff_final_link_info
*, asection
*,
548 struct bfd_link_order
*));
551 #define coff_get_section_contents_in_window \
552 _bfd_generic_get_section_contents_in_window
554 /* Functions in xcofflink.c. */
556 extern long _bfd_xcoff_get_dynamic_symtab_upper_bound
PARAMS ((bfd
*));
557 extern long _bfd_xcoff_canonicalize_dynamic_symtab
558 PARAMS ((bfd
*, asymbol
**));
559 extern long _bfd_xcoff_get_dynamic_reloc_upper_bound
PARAMS ((bfd
*));
560 extern long _bfd_xcoff_canonicalize_dynamic_reloc
561 PARAMS ((bfd
*, arelent
**, asymbol
**));
562 extern struct bfd_link_hash_table
*_bfd_xcoff_bfd_link_hash_table_create
564 extern boolean _bfd_xcoff_bfd_link_add_symbols
565 PARAMS ((bfd
*, struct bfd_link_info
*));
566 extern boolean _bfd_xcoff_bfd_final_link
567 PARAMS ((bfd
*, struct bfd_link_info
*));
568 extern boolean _bfd_ppc_xcoff_relocate_section
569 PARAMS ((bfd
*, struct bfd_link_info
*, bfd
*, asection
*, bfd_byte
*,
570 struct internal_reloc
*, struct internal_syment
*, asection
**));
572 /* Functions in coff-ppc.c. FIXME: These are called be pe.em in the
573 linker, and so should start with bfd and be declared in bfd.h. */
575 extern boolean ppc_allocate_toc_section
PARAMS ((struct bfd_link_info
*));
576 extern boolean ppc_process_before_allocation
577 PARAMS ((bfd
*, struct bfd_link_info
*));
579 /* And more taken from the source .. */