1 /* BFD COFF object file private structure.
2 Copyright (C) 1990, 91, 92, 93, 94, 1995 Free Software Foundation, Inc.
3 Written by Cygnus Support.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
23 /* Object file tdata; access macros */
25 #define coff_data(bfd) ((bfd)->tdata.coff_obj_data)
26 #define exec_hdr(bfd) (coff_data(bfd)->hdr)
27 #define obj_pe(bfd) (coff_data(bfd)->pe)
28 #define obj_symbols(bfd) (coff_data(bfd)->symbols)
29 #define obj_sym_filepos(bfd) (coff_data(bfd)->sym_filepos)
31 #define obj_relocbase(bfd) (coff_data(bfd)->relocbase)
32 #define obj_raw_syments(bfd) (coff_data(bfd)->raw_syments)
33 #define obj_raw_syment_count(bfd) (coff_data(bfd)->raw_syment_count)
34 #define obj_convert(bfd) (coff_data(bfd)->conversion_table)
35 #define obj_conv_table_size(bfd) (coff_data(bfd)->conv_table_size)
37 #define obj_coff_external_syms(bfd) (coff_data (bfd)->external_syms)
38 #define obj_coff_keep_syms(bfd) (coff_data (bfd)->keep_syms)
39 #define obj_coff_strings(bfd) (coff_data (bfd)->strings)
40 #define obj_coff_keep_strings(bfd) (coff_data (bfd)->keep_strings)
41 #define obj_coff_sym_hashes(bfd) (coff_data (bfd)->sym_hashes)
43 #define obj_coff_local_toc_table(bfd) (coff_data(bfd)->local_toc_sym_map)
45 /* `Tdata' information kept for COFF files. */
47 typedef struct coff_tdata
49 struct coff_symbol_struct
*symbols
; /* symtab for input bfd */
50 unsigned int *conversion_table
;
54 struct coff_ptr_struct
*raw_syments
;
55 unsigned int raw_syment_count
;
57 /* These are only valid once writing has begun */
60 /* These members communicate important constants about the symbol table
61 to GDB's symbol-reading code. These `constants' unfortunately vary
62 from coff implementation to implementation... */
63 unsigned local_n_btmask
;
64 unsigned local_n_btshft
;
65 unsigned local_n_tmask
;
66 unsigned local_n_tshift
;
67 unsigned local_symesz
;
68 unsigned local_auxesz
;
69 unsigned local_linesz
;
71 /* The unswapped external symbols. May be NULL. Read by
72 _bfd_coff_get_external_symbols. */
74 /* If this is true, the external_syms may not be freed. */
77 /* The string table. May be NULL. Read by
78 _bfd_coff_read_string_table. */
80 /* If this is true, the strings may not be freed. */
83 /* is this a PE format coff file */
85 /* Used by the COFF backend linker. */
86 struct coff_link_hash_entry
**sym_hashes
;
88 /* used by the pe linker for PowerPC */
89 int *local_toc_sym_map
;
91 struct bfd_link_info
*link_info
;
93 /* Used by coff_find_nearest_line. */
97 /* Tdata for pe image files. */
98 typedef struct pe_tdata
101 struct internal_extra_pe_aouthdr pe_opthdr
;
103 int has_reloc_section
;
104 boolean (*in_reloc_p
) PARAMS((bfd
*, reloc_howto_type
*));
108 #define pe_data(bfd) ((bfd)->tdata.pe_obj_data)
110 /* Tdata for XCOFF files. */
114 /* Basic COFF information. */
117 /* True if a large a.out header should be generated. */
118 boolean full_aouthdr
;
123 /* Index of section holding TOC. */
126 /* Index of section holding entry point. */
129 /* .text alignment from optional header. */
130 int text_align_power
;
132 /* .data alignment from optional header. */
133 int data_align_power
;
135 /* modtype from optional header. */
138 /* cputype from optional header. */
141 /* maxdata from optional header. */
142 bfd_size_type maxdata
;
144 /* maxstack from optional header. */
145 bfd_size_type maxstack
;
147 /* Used by the XCOFF backend linker. */
149 unsigned long *debug_indices
;
150 unsigned int import_file_id
;
153 #define xcoff_data(abfd) ((abfd)->tdata.xcoff_obj_data)
155 /* We take the address of the first element of a asymbol to ensure that the
156 * macro is only ever applied to an asymbol. */
157 #define coffsymbol(asymbol) ((coff_symbol_type *)(&((asymbol)->the_bfd)))
159 /* The used_by_bfd field of a section may be set to a pointer to this
162 struct coff_section_tdata
164 /* The relocs, swapped into COFF internal form. This may be NULL. */
165 struct internal_reloc
*relocs
;
166 /* If this is true, the relocs entry may not be freed. */
168 /* The section contents. This may be NULL. */
170 /* If this is true, the contents entry may not be freed. */
171 boolean keep_contents
;
172 /* Information cached by coff_find_nearest_line. */
175 const char *function
;
177 /* Available for individual backends. */
181 /* An accessor macro for the coff_section_tdata structure. */
182 #define coff_section_data(abfd, sec) \
183 ((struct coff_section_tdata *) (sec)->used_by_bfd)
185 /* Tdata for sections in XCOFF files. This is used by the linker. */
187 struct xcoff_section_tdata
189 /* Used for XCOFF csects created by the linker; points to the real
190 XCOFF section which contains this csect. */
192 /* The lineno_count field for the enclosing section, because we are
193 going to clobber it there. */
194 unsigned int lineno_count
;
195 /* The first and one past the last symbol indices for symbols used
197 unsigned long first_symndx
;
198 unsigned long last_symndx
;
201 /* An accessor macro the xcoff_section_tdata structure. */
202 #define xcoff_section_data(abfd, sec) \
203 ((struct xcoff_section_tdata *) coff_section_data ((abfd), (sec))->tdata)
205 /* COFF linker hash table entries. */
207 struct coff_link_hash_entry
209 struct bfd_link_hash_entry root
;
211 /* Symbol index in output file. Set to -1 initially. Set to -2 if
212 there is a reloc against this symbol. */
221 /* Number of auxiliary entries. */
224 /* BFD to take auxiliary entries from. */
227 /* Pointer to array of auxiliary entries, if any. */
228 union internal_auxent
*aux
;
231 /* COFF linker hash table. */
233 struct coff_link_hash_table
235 struct bfd_link_hash_table root
;
238 /* Look up an entry in a COFF linker hash table. */
240 #define coff_link_hash_lookup(table, string, create, copy, follow) \
241 ((struct coff_link_hash_entry *) \
242 bfd_link_hash_lookup (&(table)->root, (string), (create), \
245 /* Traverse a COFF linker hash table. */
247 #define coff_link_hash_traverse(table, func, info) \
248 (bfd_link_hash_traverse \
250 (boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (func), \
253 /* Get the COFF linker hash table from a link_info structure. */
255 #define coff_hash_table(p) ((struct coff_link_hash_table *) ((p)->hash))
257 /* Functions in coffgen.c. */
258 extern const bfd_target
*coff_object_p
PARAMS ((bfd
*));
259 extern struct sec
*coff_section_from_bfd_index
PARAMS ((bfd
*, int));
260 extern long coff_get_symtab_upper_bound
PARAMS ((bfd
*));
261 extern long coff_get_symtab
PARAMS ((bfd
*, asymbol
**));
262 extern int coff_count_linenumbers
PARAMS ((bfd
*));
263 extern struct coff_symbol_struct
*coff_symbol_from
PARAMS ((bfd
*, asymbol
*));
264 extern boolean coff_renumber_symbols
PARAMS ((bfd
*, int *));
265 extern void coff_mangle_symbols
PARAMS ((bfd
*));
266 extern boolean coff_write_symbols
PARAMS ((bfd
*));
267 extern boolean coff_write_linenumbers
PARAMS ((bfd
*));
268 extern alent
*coff_get_lineno
PARAMS ((bfd
*, asymbol
*));
269 extern asymbol
*coff_section_symbol
PARAMS ((bfd
*, char *));
270 extern boolean _bfd_coff_get_external_symbols
PARAMS ((bfd
*));
271 extern const char *_bfd_coff_read_string_table
PARAMS ((bfd
*));
272 extern boolean _bfd_coff_free_symbols
PARAMS ((bfd
*));
273 extern struct coff_ptr_struct
*coff_get_normalized_symtab
PARAMS ((bfd
*));
274 extern long coff_get_reloc_upper_bound
PARAMS ((bfd
*, sec_ptr
));
275 extern asymbol
*coff_make_empty_symbol
PARAMS ((bfd
*));
276 extern void coff_print_symbol
PARAMS ((bfd
*, PTR filep
, asymbol
*,
277 bfd_print_symbol_type how
));
278 extern void coff_get_symbol_info
PARAMS ((bfd
*, asymbol
*,
280 extern asymbol
*coff_bfd_make_debug_symbol
PARAMS ((bfd
*, PTR
,
282 extern boolean coff_find_nearest_line
PARAMS ((bfd
*,
286 CONST
char **filename_ptr
,
287 CONST
char **functionname_ptr
,
288 unsigned int *line_ptr
));
289 extern int coff_sizeof_headers
PARAMS ((bfd
*, boolean reloc
));
290 extern boolean bfd_coff_reloc16_relax_section
291 PARAMS ((bfd
*, asection
*, struct bfd_link_info
*, boolean
*));
292 extern bfd_byte
*bfd_coff_reloc16_get_relocated_section_contents
293 PARAMS ((bfd
*, struct bfd_link_info
*, struct bfd_link_order
*,
294 bfd_byte
*, boolean relocateable
, asymbol
**));
295 extern bfd_vma bfd_coff_reloc16_get_value
PARAMS ((arelent
*,
296 struct bfd_link_info
*,
298 extern void bfd_perform_slip
PARAMS ((bfd
*abfd
, unsigned int slip
,
299 asection
*input_section
,
302 /* Functions and types in cofflink.c. */
304 #define STRING_SIZE_SIZE (4)
306 /* We use a hash table to merge identical enum, struct, and union
307 definitions in the linker. */
309 /* Information we keep for a single element (an enum value, a
310 structure or union field) in the debug merge hash table. */
312 struct coff_debug_merge_element
315 struct coff_debug_merge_element
*next
;
323 /* Symbol index for complex type. */
327 /* A linked list of debug merge entries for a given name. */
329 struct coff_debug_merge_type
331 /* Next type with the same name. */
332 struct coff_debug_merge_type
*next
;
337 /* Symbol index where this type is defined. */
340 /* List of elements. */
341 struct coff_debug_merge_element
*elements
;
344 /* Information we store in the debug merge hash table. */
346 struct coff_debug_merge_hash_entry
348 struct bfd_hash_entry root
;
350 /* A list of types with this name. */
351 struct coff_debug_merge_type
*types
;
354 /* The debug merge hash table. */
356 struct coff_debug_merge_hash_table
358 struct bfd_hash_table root
;
361 /* Initialize a COFF debug merge hash table. */
363 #define coff_debug_merge_hash_table_init(table) \
364 (bfd_hash_table_init (&(table)->root, _bfd_coff_debug_merge_hash_newfunc))
366 /* Free a COFF debug merge hash table. */
368 #define coff_debug_merge_hash_table_free(table) \
369 (bfd_hash_table_free (&(table)->root))
371 /* Look up an entry in a COFF debug merge hash table. */
373 #define coff_debug_merge_hash_lookup(table, string, create, copy) \
374 ((struct coff_debug_merge_hash_entry *) \
375 bfd_hash_lookup (&(table)->root, (string), (create), (copy)))
377 /* Information we keep for each section in the output file when doing
378 a relocateable link. */
380 struct coff_link_section_info
382 /* The relocs to be output. */
383 struct internal_reloc
*relocs
;
384 /* For each reloc against a global symbol whose index was not known
385 when the reloc was handled, the global hash table entry. */
386 struct coff_link_hash_entry
**rel_hashes
;
389 /* Information that we pass around while doing the final link step. */
391 struct coff_final_link_info
393 /* General link information. */
394 struct bfd_link_info
*info
;
397 /* Used to indicate failure in traversal routine. */
399 /* Hash table for long symbol names. */
400 struct bfd_strtab_hash
*strtab
;
401 /* When doing a relocateable link, an array of information kept for
402 each output section, indexed by the target_index field. */
403 struct coff_link_section_info
*section_info
;
404 /* Symbol index of last C_FILE symbol (-1 if none). */
405 long last_file_index
;
406 /* Contents of last C_FILE symbol. */
407 struct internal_syment last_file
;
408 /* Hash table used to merge debug information. */
409 struct coff_debug_merge_hash_table debug_merge
;
410 /* Buffer large enough to hold swapped symbols of any input file. */
411 struct internal_syment
*internal_syms
;
412 /* Buffer large enough to hold sections of symbols of any input file. */
414 /* Buffer large enough to hold output indices of symbols of any
417 /* Buffer large enough to hold output symbols for any input file. */
419 /* Buffer large enough to hold external line numbers for any input
422 /* Buffer large enough to hold any input section. */
424 /* Buffer large enough to hold external relocs of any input section. */
425 bfd_byte
*external_relocs
;
426 /* Buffer large enough to hold swapped relocs of any input section. */
427 struct internal_reloc
*internal_relocs
;
430 extern struct bfd_hash_entry
*_bfd_coff_link_hash_newfunc
431 PARAMS ((struct bfd_hash_entry
*, struct bfd_hash_table
*, const char *));
432 extern boolean _bfd_coff_link_hash_table_init
433 PARAMS ((struct coff_link_hash_table
*, bfd
*,
434 struct bfd_hash_entry
*(*) (struct bfd_hash_entry
*,
435 struct bfd_hash_table
*,
437 extern struct bfd_link_hash_table
*_bfd_coff_link_hash_table_create
439 extern const char *_bfd_coff_internal_syment_name
440 PARAMS ((bfd
*, const struct internal_syment
*, char *));
441 extern boolean _bfd_coff_link_add_symbols
442 PARAMS ((bfd
*, struct bfd_link_info
*));
443 extern boolean _bfd_coff_final_link
444 PARAMS ((bfd
*, struct bfd_link_info
*));
445 extern struct internal_reloc
*_bfd_coff_read_internal_relocs
446 PARAMS ((bfd
*, asection
*, boolean
, bfd_byte
*, boolean
,
447 struct internal_reloc
*));
448 extern boolean _bfd_coff_generic_relocate_section
449 PARAMS ((bfd
*, struct bfd_link_info
*, bfd
*, asection
*, bfd_byte
*,
450 struct internal_reloc
*, struct internal_syment
*, asection
**));
452 extern struct bfd_hash_entry
*_bfd_coff_debug_merge_hash_newfunc
453 PARAMS ((struct bfd_hash_entry
*, struct bfd_hash_table
*, const char *));
454 extern boolean _bfd_coff_write_global_sym
455 PARAMS ((struct coff_link_hash_entry
*, PTR
));
456 extern boolean _bfd_coff_link_input_bfd
457 PARAMS ((struct coff_final_link_info
*, bfd
*));
458 extern boolean _bfd_coff_reloc_link_order
459 PARAMS ((bfd
*, struct coff_final_link_info
*, asection
*,
460 struct bfd_link_order
*));
463 #define coff_get_section_contents_in_window \
464 _bfd_generic_get_section_contents_in_window
466 /* Functions in xcofflink.c. */
468 extern struct bfd_link_hash_table
*_bfd_xcoff_bfd_link_hash_table_create
470 extern boolean _bfd_xcoff_bfd_link_add_symbols
471 PARAMS ((bfd
*, struct bfd_link_info
*));
472 extern boolean _bfd_xcoff_bfd_final_link
473 PARAMS ((bfd
*, struct bfd_link_info
*));
474 extern boolean _bfd_ppc_xcoff_relocate_section
475 PARAMS ((bfd
*, struct bfd_link_info
*, bfd
*, asection
*, bfd_byte
*,
476 struct internal_reloc
*, struct internal_syment
*, asection
**));
478 /* And more taken from the source .. */