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)
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 long 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 /* The timestamp from the COFF file header. */
103 /* Copy of some of the f_flags bits in the COFF filehdr structure,
109 /* Tdata for pe image files. */
110 typedef struct pe_tdata
113 struct internal_extra_pe_aouthdr pe_opthdr
;
115 int has_reloc_section
;
116 boolean (*in_reloc_p
) PARAMS((bfd
*, reloc_howto_type
*));
120 #define pe_data(bfd) ((bfd)->tdata.pe_obj_data)
122 /* Tdata for XCOFF files. */
126 /* Basic COFF information. */
129 /* True if a large a.out header should be generated. */
130 boolean full_aouthdr
;
135 /* Index of section holding TOC. */
138 /* Index of section holding entry point. */
141 /* .text alignment from optional header. */
142 int text_align_power
;
144 /* .data alignment from optional header. */
145 int data_align_power
;
147 /* modtype from optional header. */
150 /* cputype from optional header. */
153 /* maxdata from optional header. */
154 bfd_size_type maxdata
;
156 /* maxstack from optional header. */
157 bfd_size_type maxstack
;
159 /* Used by the XCOFF backend linker. */
161 unsigned long *debug_indices
;
162 unsigned int import_file_id
;
165 #define xcoff_data(abfd) ((abfd)->tdata.xcoff_obj_data)
167 /* We take the address of the first element of a asymbol to ensure that the
168 * macro is only ever applied to an asymbol. */
169 #define coffsymbol(asymbol) ((coff_symbol_type *)(&((asymbol)->the_bfd)))
171 /* The used_by_bfd field of a section may be set to a pointer to this
174 struct coff_section_tdata
176 /* The relocs, swapped into COFF internal form. This may be NULL. */
177 struct internal_reloc
*relocs
;
178 /* If this is true, the relocs entry may not be freed. */
180 /* The section contents. This may be NULL. */
182 /* If this is true, the contents entry may not be freed. */
183 boolean keep_contents
;
184 /* Information cached by coff_find_nearest_line. */
187 const char *function
;
189 /* A pointer used for .stab linking optimizations. */
191 /* Available for individual backends. */
195 /* An accessor macro for the coff_section_tdata structure. */
196 #define coff_section_data(abfd, sec) \
197 ((struct coff_section_tdata *) (sec)->used_by_bfd)
199 /* Tdata for sections in XCOFF files. This is used by the linker. */
201 struct xcoff_section_tdata
203 /* Used for XCOFF csects created by the linker; points to the real
204 XCOFF section which contains this csect. */
206 /* The lineno_count field for the enclosing section, because we are
207 going to clobber it there. */
208 unsigned int lineno_count
;
209 /* The first and one past the last symbol indices for symbols used
211 unsigned long first_symndx
;
212 unsigned long last_symndx
;
215 /* An accessor macro the xcoff_section_tdata structure. */
216 #define xcoff_section_data(abfd, sec) \
217 ((struct xcoff_section_tdata *) coff_section_data ((abfd), (sec))->tdata)
219 /* Tdata for sections in PEI image files. */
221 struct pei_section_tdata
223 /* The virtual size of the section. */
224 bfd_size_type virt_size
;
227 /* An accessor macro for the pei_section_tdata structure. */
228 #define pei_section_data(abfd, sec) \
229 ((struct pei_section_tdata *) coff_section_data ((abfd), (sec))->tdata)
231 /* COFF linker hash table entries. */
233 struct coff_link_hash_entry
235 struct bfd_link_hash_entry root
;
237 /* Symbol index in output file. Set to -1 initially. Set to -2 if
238 there is a reloc against this symbol. */
247 /* Number of auxiliary entries. */
250 /* BFD to take auxiliary entries from. */
253 /* Pointer to array of auxiliary entries, if any. */
254 union internal_auxent
*aux
;
256 /* Flag word; legal values follow. */
257 unsigned short coff_link_hash_flags
;
258 /* Symbol is a PE section symbol. */
259 #define COFF_LINK_HASH_PE_SECTION_SYMBOL (01)
262 /* COFF linker hash table. */
264 struct coff_link_hash_table
266 struct bfd_link_hash_table root
;
267 /* A pointer to information used to link stabs in sections. */
271 /* Look up an entry in a COFF linker hash table. */
273 #define coff_link_hash_lookup(table, string, create, copy, follow) \
274 ((struct coff_link_hash_entry *) \
275 bfd_link_hash_lookup (&(table)->root, (string), (create), \
278 /* Traverse a COFF linker hash table. */
280 #define coff_link_hash_traverse(table, func, info) \
281 (bfd_link_hash_traverse \
283 (boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (func), \
286 /* Get the COFF linker hash table from a link_info structure. */
288 #define coff_hash_table(p) ((struct coff_link_hash_table *) ((p)->hash))
290 /* Functions in coffgen.c. */
291 extern const bfd_target
*coff_object_p
PARAMS ((bfd
*));
292 extern struct sec
*coff_section_from_bfd_index
PARAMS ((bfd
*, int));
293 extern long coff_get_symtab_upper_bound
PARAMS ((bfd
*));
294 extern long coff_get_symtab
PARAMS ((bfd
*, asymbol
**));
295 extern int coff_count_linenumbers
PARAMS ((bfd
*));
296 extern struct coff_symbol_struct
*coff_symbol_from
PARAMS ((bfd
*, asymbol
*));
297 extern boolean coff_renumber_symbols
PARAMS ((bfd
*, int *));
298 extern void coff_mangle_symbols
PARAMS ((bfd
*));
299 extern boolean coff_write_symbols
PARAMS ((bfd
*));
300 extern boolean coff_write_linenumbers
PARAMS ((bfd
*));
301 extern alent
*coff_get_lineno
PARAMS ((bfd
*, asymbol
*));
302 extern asymbol
*coff_section_symbol
PARAMS ((bfd
*, char *));
303 extern boolean _bfd_coff_get_external_symbols
PARAMS ((bfd
*));
304 extern const char *_bfd_coff_read_string_table
PARAMS ((bfd
*));
305 extern boolean _bfd_coff_free_symbols
PARAMS ((bfd
*));
306 extern struct coff_ptr_struct
*coff_get_normalized_symtab
PARAMS ((bfd
*));
307 extern long coff_get_reloc_upper_bound
PARAMS ((bfd
*, sec_ptr
));
308 extern asymbol
*coff_make_empty_symbol
PARAMS ((bfd
*));
309 extern void coff_print_symbol
PARAMS ((bfd
*, PTR filep
, asymbol
*,
310 bfd_print_symbol_type how
));
311 extern void coff_get_symbol_info
PARAMS ((bfd
*, asymbol
*,
313 extern boolean _bfd_coff_is_local_label_name
PARAMS ((bfd
*, const char *));
314 extern asymbol
*coff_bfd_make_debug_symbol
PARAMS ((bfd
*, PTR
,
316 extern boolean coff_find_nearest_line
PARAMS ((bfd
*,
320 CONST
char **filename_ptr
,
321 CONST
char **functionname_ptr
,
322 unsigned int *line_ptr
));
323 extern int coff_sizeof_headers
PARAMS ((bfd
*, boolean reloc
));
324 extern boolean bfd_coff_reloc16_relax_section
325 PARAMS ((bfd
*, asection
*, struct bfd_link_info
*, boolean
*));
326 extern bfd_byte
*bfd_coff_reloc16_get_relocated_section_contents
327 PARAMS ((bfd
*, struct bfd_link_info
*, struct bfd_link_order
*,
328 bfd_byte
*, boolean relocateable
, asymbol
**));
329 extern bfd_vma bfd_coff_reloc16_get_value
PARAMS ((arelent
*,
330 struct bfd_link_info
*,
332 extern void bfd_perform_slip
PARAMS ((bfd
*abfd
, unsigned int slip
,
333 asection
*input_section
,
336 /* Functions and types in cofflink.c. */
338 #define STRING_SIZE_SIZE (4)
340 /* We use a hash table to merge identical enum, struct, and union
341 definitions in the linker. */
343 /* Information we keep for a single element (an enum value, a
344 structure or union field) in the debug merge hash table. */
346 struct coff_debug_merge_element
349 struct coff_debug_merge_element
*next
;
357 /* Symbol index for complex type. */
361 /* A linked list of debug merge entries for a given name. */
363 struct coff_debug_merge_type
365 /* Next type with the same name. */
366 struct coff_debug_merge_type
*next
;
371 /* Symbol index where this type is defined. */
374 /* List of elements. */
375 struct coff_debug_merge_element
*elements
;
378 /* Information we store in the debug merge hash table. */
380 struct coff_debug_merge_hash_entry
382 struct bfd_hash_entry root
;
384 /* A list of types with this name. */
385 struct coff_debug_merge_type
*types
;
388 /* The debug merge hash table. */
390 struct coff_debug_merge_hash_table
392 struct bfd_hash_table root
;
395 /* Initialize a COFF debug merge hash table. */
397 #define coff_debug_merge_hash_table_init(table) \
398 (bfd_hash_table_init (&(table)->root, _bfd_coff_debug_merge_hash_newfunc))
400 /* Free a COFF debug merge hash table. */
402 #define coff_debug_merge_hash_table_free(table) \
403 (bfd_hash_table_free (&(table)->root))
405 /* Look up an entry in a COFF debug merge hash table. */
407 #define coff_debug_merge_hash_lookup(table, string, create, copy) \
408 ((struct coff_debug_merge_hash_entry *) \
409 bfd_hash_lookup (&(table)->root, (string), (create), (copy)))
411 /* Information we keep for each section in the output file when doing
412 a relocateable link. */
414 struct coff_link_section_info
416 /* The relocs to be output. */
417 struct internal_reloc
*relocs
;
418 /* For each reloc against a global symbol whose index was not known
419 when the reloc was handled, the global hash table entry. */
420 struct coff_link_hash_entry
**rel_hashes
;
423 /* Information that we pass around while doing the final link step. */
425 struct coff_final_link_info
427 /* General link information. */
428 struct bfd_link_info
*info
;
431 /* Used to indicate failure in traversal routine. */
433 /* If doing "task linking" set only during the time when we want the
434 global symbol writer to convert the storage class of defined global
435 symbols from global to static. */
436 boolean global_to_static
;
437 /* Hash table for long symbol names. */
438 struct bfd_strtab_hash
*strtab
;
439 /* When doing a relocateable link, an array of information kept for
440 each output section, indexed by the target_index field. */
441 struct coff_link_section_info
*section_info
;
442 /* Symbol index of last C_FILE symbol (-1 if none). */
443 long last_file_index
;
444 /* Contents of last C_FILE symbol. */
445 struct internal_syment last_file
;
446 /* Symbol index of first aux entry of last .bf symbol with an empty
447 endndx field (-1 if none). */
449 /* Contents of last_bf_index aux entry. */
450 union internal_auxent last_bf
;
451 /* Hash table used to merge debug information. */
452 struct coff_debug_merge_hash_table debug_merge
;
453 /* Buffer large enough to hold swapped symbols of any input file. */
454 struct internal_syment
*internal_syms
;
455 /* Buffer large enough to hold sections of symbols of any input file. */
457 /* Buffer large enough to hold output indices of symbols of any
460 /* Buffer large enough to hold output symbols for any input file. */
462 /* Buffer large enough to hold external line numbers for any input
465 /* Buffer large enough to hold any input section. */
467 /* Buffer large enough to hold external relocs of any input section. */
468 bfd_byte
*external_relocs
;
469 /* Buffer large enough to hold swapped relocs of any input section. */
470 struct internal_reloc
*internal_relocs
;
473 /* Most COFF variants have no way to record the alignment of a
474 section. This struct is used to set a specific alignment based on
475 the name of the section. */
477 struct coff_section_alignment_entry
479 /* The section name. */
482 /* This is either (unsigned int) -1, indicating that the section
483 name must match exactly, or it is the number of letters which
484 must match at the start of the name. */
485 unsigned int comparison_length
;
487 /* These macros may be used to fill in the first two fields in a
488 structure initialization. */
489 #define COFF_SECTION_NAME_EXACT_MATCH(name) (name), ((unsigned int) -1)
490 #define COFF_SECTION_NAME_PARTIAL_MATCH(name) (name), (sizeof (name) - 1)
492 /* Only use this entry if the default section alignment for this
493 target is at least that much (as a power of two). If this field
494 is COFF_ALIGNMENT_FIELD_EMPTY, it should be ignored. */
495 unsigned int default_alignment_min
;
497 /* Only use this entry if the default section alignment for this
498 target is no greater than this (as a power of two). If this
499 field is COFF_ALIGNMENT_FIELD_EMPTY, it should be ignored. */
500 unsigned int default_alignment_max
;
502 #define COFF_ALIGNMENT_FIELD_EMPTY ((unsigned int) -1)
504 /* The desired alignment for this section (as a power of two). */
505 unsigned int alignment_power
;
508 extern struct bfd_hash_entry
*_bfd_coff_link_hash_newfunc
509 PARAMS ((struct bfd_hash_entry
*, struct bfd_hash_table
*, const char *));
510 extern boolean _bfd_coff_link_hash_table_init
511 PARAMS ((struct coff_link_hash_table
*, bfd
*,
512 struct bfd_hash_entry
*(*) (struct bfd_hash_entry
*,
513 struct bfd_hash_table
*,
515 extern struct bfd_link_hash_table
*_bfd_coff_link_hash_table_create
517 extern const char *_bfd_coff_internal_syment_name
518 PARAMS ((bfd
*, const struct internal_syment
*, char *));
519 extern boolean _bfd_coff_link_add_symbols
520 PARAMS ((bfd
*, struct bfd_link_info
*));
521 extern boolean _bfd_coff_final_link
522 PARAMS ((bfd
*, struct bfd_link_info
*));
523 extern struct internal_reloc
*_bfd_coff_read_internal_relocs
524 PARAMS ((bfd
*, asection
*, boolean
, bfd_byte
*, boolean
,
525 struct internal_reloc
*));
526 extern boolean _bfd_coff_generic_relocate_section
527 PARAMS ((bfd
*, struct bfd_link_info
*, bfd
*, asection
*, bfd_byte
*,
528 struct internal_reloc
*, struct internal_syment
*, asection
**));
530 extern struct bfd_hash_entry
*_bfd_coff_debug_merge_hash_newfunc
531 PARAMS ((struct bfd_hash_entry
*, struct bfd_hash_table
*, const char *));
532 extern boolean _bfd_coff_write_global_sym
533 PARAMS ((struct coff_link_hash_entry
*, PTR
));
534 extern boolean _bfd_coff_write_task_globals
535 PARAMS ((struct coff_link_hash_entry
*, PTR
));
536 extern boolean _bfd_coff_link_input_bfd
537 PARAMS ((struct coff_final_link_info
*, bfd
*));
538 extern boolean _bfd_coff_reloc_link_order
539 PARAMS ((bfd
*, struct coff_final_link_info
*, asection
*,
540 struct bfd_link_order
*));
543 #define coff_get_section_contents_in_window \
544 _bfd_generic_get_section_contents_in_window
546 /* Functions in xcofflink.c. */
548 extern long _bfd_xcoff_get_dynamic_symtab_upper_bound
PARAMS ((bfd
*));
549 extern long _bfd_xcoff_canonicalize_dynamic_symtab
550 PARAMS ((bfd
*, asymbol
**));
551 extern long _bfd_xcoff_get_dynamic_reloc_upper_bound
PARAMS ((bfd
*));
552 extern long _bfd_xcoff_canonicalize_dynamic_reloc
553 PARAMS ((bfd
*, arelent
**, asymbol
**));
554 extern struct bfd_link_hash_table
*_bfd_xcoff_bfd_link_hash_table_create
556 extern boolean _bfd_xcoff_bfd_link_add_symbols
557 PARAMS ((bfd
*, struct bfd_link_info
*));
558 extern boolean _bfd_xcoff_bfd_final_link
559 PARAMS ((bfd
*, struct bfd_link_info
*));
560 extern boolean _bfd_ppc_xcoff_relocate_section
561 PARAMS ((bfd
*, struct bfd_link_info
*, bfd
*, asection
*, bfd_byte
*,
562 struct internal_reloc
*, struct internal_syment
*, asection
**));
564 /* Functions in coff-ppc.c. FIXME: These are called be pe.em in the
565 linker, and so should start with bfd and be declared in bfd.h. */
567 extern boolean ppc_allocate_toc_section
PARAMS ((struct bfd_link_info
*));
568 extern boolean ppc_process_before_allocation
569 PARAMS ((bfd
*, struct bfd_link_info
*));
571 /* And more taken from the source .. */