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
;
253 /* Flag word; legal values follow. */
254 unsigned short coff_link_hash_flags
;
255 /* Symbol is a PE section symbol. */
256 #define COFF_LINK_HASH_PE_SECTION_SYMBOL (01)
259 /* COFF linker hash table. */
261 struct coff_link_hash_table
263 struct bfd_link_hash_table root
;
264 /* A pointer to information used to link stabs in sections. */
268 /* Look up an entry in a COFF linker hash table. */
270 #define coff_link_hash_lookup(table, string, create, copy, follow) \
271 ((struct coff_link_hash_entry *) \
272 bfd_link_hash_lookup (&(table)->root, (string), (create), \
275 /* Traverse a COFF linker hash table. */
277 #define coff_link_hash_traverse(table, func, info) \
278 (bfd_link_hash_traverse \
280 (boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (func), \
283 /* Get the COFF linker hash table from a link_info structure. */
285 #define coff_hash_table(p) ((struct coff_link_hash_table *) ((p)->hash))
287 /* Functions in coffgen.c. */
288 extern const bfd_target
*coff_object_p
PARAMS ((bfd
*));
289 extern struct sec
*coff_section_from_bfd_index
PARAMS ((bfd
*, int));
290 extern long coff_get_symtab_upper_bound
PARAMS ((bfd
*));
291 extern long coff_get_symtab
PARAMS ((bfd
*, asymbol
**));
292 extern int coff_count_linenumbers
PARAMS ((bfd
*));
293 extern struct coff_symbol_struct
*coff_symbol_from
PARAMS ((bfd
*, asymbol
*));
294 extern boolean coff_renumber_symbols
PARAMS ((bfd
*, int *));
295 extern void coff_mangle_symbols
PARAMS ((bfd
*));
296 extern boolean coff_write_symbols
PARAMS ((bfd
*));
297 extern boolean coff_write_linenumbers
PARAMS ((bfd
*));
298 extern alent
*coff_get_lineno
PARAMS ((bfd
*, asymbol
*));
299 extern asymbol
*coff_section_symbol
PARAMS ((bfd
*, char *));
300 extern boolean _bfd_coff_get_external_symbols
PARAMS ((bfd
*));
301 extern const char *_bfd_coff_read_string_table
PARAMS ((bfd
*));
302 extern boolean _bfd_coff_free_symbols
PARAMS ((bfd
*));
303 extern struct coff_ptr_struct
*coff_get_normalized_symtab
PARAMS ((bfd
*));
304 extern long coff_get_reloc_upper_bound
PARAMS ((bfd
*, sec_ptr
));
305 extern asymbol
*coff_make_empty_symbol
PARAMS ((bfd
*));
306 extern void coff_print_symbol
PARAMS ((bfd
*, PTR filep
, asymbol
*,
307 bfd_print_symbol_type how
));
308 extern void coff_get_symbol_info
PARAMS ((bfd
*, asymbol
*,
310 extern boolean _bfd_coff_is_local_label_name
PARAMS ((bfd
*, const char *));
311 extern asymbol
*coff_bfd_make_debug_symbol
PARAMS ((bfd
*, PTR
,
313 extern boolean coff_find_nearest_line
PARAMS ((bfd
*,
317 CONST
char **filename_ptr
,
318 CONST
char **functionname_ptr
,
319 unsigned int *line_ptr
));
320 extern int coff_sizeof_headers
PARAMS ((bfd
*, boolean reloc
));
321 extern boolean bfd_coff_reloc16_relax_section
322 PARAMS ((bfd
*, asection
*, struct bfd_link_info
*, boolean
*));
323 extern bfd_byte
*bfd_coff_reloc16_get_relocated_section_contents
324 PARAMS ((bfd
*, struct bfd_link_info
*, struct bfd_link_order
*,
325 bfd_byte
*, boolean relocateable
, asymbol
**));
326 extern bfd_vma bfd_coff_reloc16_get_value
PARAMS ((arelent
*,
327 struct bfd_link_info
*,
329 extern void bfd_perform_slip
PARAMS ((bfd
*abfd
, unsigned int slip
,
330 asection
*input_section
,
333 /* Functions and types in cofflink.c. */
335 #define STRING_SIZE_SIZE (4)
337 /* We use a hash table to merge identical enum, struct, and union
338 definitions in the linker. */
340 /* Information we keep for a single element (an enum value, a
341 structure or union field) in the debug merge hash table. */
343 struct coff_debug_merge_element
346 struct coff_debug_merge_element
*next
;
354 /* Symbol index for complex type. */
358 /* A linked list of debug merge entries for a given name. */
360 struct coff_debug_merge_type
362 /* Next type with the same name. */
363 struct coff_debug_merge_type
*next
;
368 /* Symbol index where this type is defined. */
371 /* List of elements. */
372 struct coff_debug_merge_element
*elements
;
375 /* Information we store in the debug merge hash table. */
377 struct coff_debug_merge_hash_entry
379 struct bfd_hash_entry root
;
381 /* A list of types with this name. */
382 struct coff_debug_merge_type
*types
;
385 /* The debug merge hash table. */
387 struct coff_debug_merge_hash_table
389 struct bfd_hash_table root
;
392 /* Initialize a COFF debug merge hash table. */
394 #define coff_debug_merge_hash_table_init(table) \
395 (bfd_hash_table_init (&(table)->root, _bfd_coff_debug_merge_hash_newfunc))
397 /* Free a COFF debug merge hash table. */
399 #define coff_debug_merge_hash_table_free(table) \
400 (bfd_hash_table_free (&(table)->root))
402 /* Look up an entry in a COFF debug merge hash table. */
404 #define coff_debug_merge_hash_lookup(table, string, create, copy) \
405 ((struct coff_debug_merge_hash_entry *) \
406 bfd_hash_lookup (&(table)->root, (string), (create), (copy)))
408 /* Information we keep for each section in the output file when doing
409 a relocateable link. */
411 struct coff_link_section_info
413 /* The relocs to be output. */
414 struct internal_reloc
*relocs
;
415 /* For each reloc against a global symbol whose index was not known
416 when the reloc was handled, the global hash table entry. */
417 struct coff_link_hash_entry
**rel_hashes
;
420 /* Information that we pass around while doing the final link step. */
422 struct coff_final_link_info
424 /* General link information. */
425 struct bfd_link_info
*info
;
428 /* Used to indicate failure in traversal routine. */
430 /* If doing "task linking" set only during the time when we want the
431 global symbol writer to convert the storage class of defined global
432 symbols from global to static. */
433 boolean global_to_static
;
434 /* Hash table for long symbol names. */
435 struct bfd_strtab_hash
*strtab
;
436 /* When doing a relocateable link, an array of information kept for
437 each output section, indexed by the target_index field. */
438 struct coff_link_section_info
*section_info
;
439 /* Symbol index of last C_FILE symbol (-1 if none). */
440 long last_file_index
;
441 /* Contents of last C_FILE symbol. */
442 struct internal_syment last_file
;
443 /* Symbol index of first aux entry of last .bf symbol with an empty
444 endndx field (-1 if none). */
446 /* Contents of last_bf_index aux entry. */
447 union internal_auxent last_bf
;
448 /* Hash table used to merge debug information. */
449 struct coff_debug_merge_hash_table debug_merge
;
450 /* Buffer large enough to hold swapped symbols of any input file. */
451 struct internal_syment
*internal_syms
;
452 /* Buffer large enough to hold sections of symbols of any input file. */
454 /* Buffer large enough to hold output indices of symbols of any
457 /* Buffer large enough to hold output symbols for any input file. */
459 /* Buffer large enough to hold external line numbers for any input
462 /* Buffer large enough to hold any input section. */
464 /* Buffer large enough to hold external relocs of any input section. */
465 bfd_byte
*external_relocs
;
466 /* Buffer large enough to hold swapped relocs of any input section. */
467 struct internal_reloc
*internal_relocs
;
470 extern struct bfd_hash_entry
*_bfd_coff_link_hash_newfunc
471 PARAMS ((struct bfd_hash_entry
*, struct bfd_hash_table
*, const char *));
472 extern boolean _bfd_coff_link_hash_table_init
473 PARAMS ((struct coff_link_hash_table
*, bfd
*,
474 struct bfd_hash_entry
*(*) (struct bfd_hash_entry
*,
475 struct bfd_hash_table
*,
477 extern struct bfd_link_hash_table
*_bfd_coff_link_hash_table_create
479 extern const char *_bfd_coff_internal_syment_name
480 PARAMS ((bfd
*, const struct internal_syment
*, char *));
481 extern boolean _bfd_coff_link_add_symbols
482 PARAMS ((bfd
*, struct bfd_link_info
*));
483 extern boolean _bfd_coff_final_link
484 PARAMS ((bfd
*, struct bfd_link_info
*));
485 extern struct internal_reloc
*_bfd_coff_read_internal_relocs
486 PARAMS ((bfd
*, asection
*, boolean
, bfd_byte
*, boolean
,
487 struct internal_reloc
*));
488 extern boolean _bfd_coff_generic_relocate_section
489 PARAMS ((bfd
*, struct bfd_link_info
*, bfd
*, asection
*, bfd_byte
*,
490 struct internal_reloc
*, struct internal_syment
*, asection
**));
492 extern struct bfd_hash_entry
*_bfd_coff_debug_merge_hash_newfunc
493 PARAMS ((struct bfd_hash_entry
*, struct bfd_hash_table
*, const char *));
494 extern boolean _bfd_coff_write_global_sym
495 PARAMS ((struct coff_link_hash_entry
*, PTR
));
496 extern boolean _bfd_coff_write_task_globals
497 PARAMS ((struct coff_link_hash_entry
*, PTR
));
498 extern boolean _bfd_coff_link_input_bfd
499 PARAMS ((struct coff_final_link_info
*, bfd
*));
500 extern boolean _bfd_coff_reloc_link_order
501 PARAMS ((bfd
*, struct coff_final_link_info
*, asection
*,
502 struct bfd_link_order
*));
505 #define coff_get_section_contents_in_window \
506 _bfd_generic_get_section_contents_in_window
508 /* Functions in xcofflink.c. */
510 extern long _bfd_xcoff_get_dynamic_symtab_upper_bound
PARAMS ((bfd
*));
511 extern long _bfd_xcoff_canonicalize_dynamic_symtab
512 PARAMS ((bfd
*, asymbol
**));
513 extern long _bfd_xcoff_get_dynamic_reloc_upper_bound
PARAMS ((bfd
*));
514 extern long _bfd_xcoff_canonicalize_dynamic_reloc
515 PARAMS ((bfd
*, arelent
**, asymbol
**));
516 extern struct bfd_link_hash_table
*_bfd_xcoff_bfd_link_hash_table_create
518 extern boolean _bfd_xcoff_bfd_link_add_symbols
519 PARAMS ((bfd
*, struct bfd_link_info
*));
520 extern boolean _bfd_xcoff_bfd_final_link
521 PARAMS ((bfd
*, struct bfd_link_info
*));
522 extern boolean _bfd_ppc_xcoff_relocate_section
523 PARAMS ((bfd
*, struct bfd_link_info
*, bfd
*, asection
*, bfd_byte
*,
524 struct internal_reloc
*, struct internal_syment
*, asection
**));
526 /* Functions in coff-ppc.c. FIXME: These are called be pe.em in the
527 linker, and so should start with bfd and be declared in bfd.h. */
529 extern boolean ppc_allocate_toc_section
PARAMS ((struct bfd_link_info
*));
530 extern boolean ppc_process_before_allocation
531 PARAMS ((bfd
*, struct bfd_link_info
*));
533 /* And more taken from the source .. */