Fixed exported names, removed a bad define
[deliverable/binutils-gdb.git] / bfd / libcoff-in.h
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.
4
5 This file is part of BFD, the Binary File Descriptor library.
6
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.
11
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.
16
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. */
20
21 #include "bfdlink.h"
22
23 /* Object file tdata; access macros */
24
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)
30
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)
36
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)
42
43 #define obj_coff_local_toc_table(bfd) (coff_data(bfd)->local_toc_sym_map)
44
45 /* `Tdata' information kept for COFF files. */
46
47 typedef struct coff_tdata
48 {
49 struct coff_symbol_struct *symbols; /* symtab for input bfd */
50 unsigned int *conversion_table;
51 int conv_table_size;
52 file_ptr sym_filepos;
53
54 struct coff_ptr_struct *raw_syments;
55 unsigned int raw_syment_count;
56
57 /* These are only valid once writing has begun */
58 long int relocbase;
59
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;
70
71 /* The unswapped external symbols. May be NULL. Read by
72 _bfd_coff_get_external_symbols. */
73 PTR external_syms;
74 /* If this is true, the external_syms may not be freed. */
75 boolean keep_syms;
76
77 /* The string table. May be NULL. Read by
78 _bfd_coff_read_string_table. */
79 char *strings;
80 /* If this is true, the strings may not be freed. */
81 boolean keep_strings;
82
83 /* is this a PE format coff file */
84 int pe;
85 /* Used by the COFF backend linker. */
86 struct coff_link_hash_entry **sym_hashes;
87
88 /* used by the pe linker for PowerPC */
89 int *local_toc_sym_map;
90
91 struct bfd_link_info *link_info;
92
93 /* Used by coff_find_nearest_line. */
94 PTR line_info;
95 } coff_data_type;
96
97 /* Tdata for pe image files. */
98 typedef struct pe_tdata
99 {
100 coff_data_type coff;
101 struct internal_extra_pe_aouthdr pe_opthdr;
102 int dll;
103 int has_reloc_section;
104 boolean (*in_reloc_p) PARAMS((bfd *, reloc_howto_type *));
105 flagword real_flags;
106 } pe_data_type;
107
108 #define pe_data(bfd) ((bfd)->tdata.pe_obj_data)
109
110 /* Tdata for XCOFF files. */
111
112 struct xcoff_tdata
113 {
114 /* Basic COFF information. */
115 coff_data_type coff;
116
117 /* True if a large a.out header should be generated. */
118 boolean full_aouthdr;
119
120 /* TOC value. */
121 bfd_vma toc;
122
123 /* Index of section holding TOC. */
124 int sntoc;
125
126 /* Index of section holding entry point. */
127 int snentry;
128
129 /* .text alignment from optional header. */
130 int text_align_power;
131
132 /* .data alignment from optional header. */
133 int data_align_power;
134
135 /* modtype from optional header. */
136 short modtype;
137
138 /* cputype from optional header. */
139 short cputype;
140
141 /* maxdata from optional header. */
142 bfd_size_type maxdata;
143
144 /* maxstack from optional header. */
145 bfd_size_type maxstack;
146
147 /* Used by the XCOFF backend linker. */
148 asection **csects;
149 unsigned long *debug_indices;
150 unsigned int import_file_id;
151 };
152
153 #define xcoff_data(abfd) ((abfd)->tdata.xcoff_obj_data)
154
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)))
158
159 /* The used_by_bfd field of a section may be set to a pointer to this
160 structure. */
161
162 struct coff_section_tdata
163 {
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. */
167 boolean keep_relocs;
168 /* The section contents. This may be NULL. */
169 bfd_byte *contents;
170 /* If this is true, the contents entry may not be freed. */
171 boolean keep_contents;
172 /* Information cached by coff_find_nearest_line. */
173 bfd_vma offset;
174 unsigned int i;
175 const char *function;
176 int line_base;
177 /* Available for individual backends. */
178 PTR tdata;
179 };
180
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)
184
185 /* Tdata for sections in XCOFF files. This is used by the linker. */
186
187 struct xcoff_section_tdata
188 {
189 /* Used for XCOFF csects created by the linker; points to the real
190 XCOFF section which contains this csect. */
191 asection *enclosing;
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
196 by this csect. */
197 unsigned long first_symndx;
198 unsigned long last_symndx;
199 };
200
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)
204
205 /* COFF linker hash table entries. */
206
207 struct coff_link_hash_entry
208 {
209 struct bfd_link_hash_entry root;
210
211 /* Symbol index in output file. Set to -1 initially. Set to -2 if
212 there is a reloc against this symbol. */
213 long indx;
214
215 /* Symbol type. */
216 unsigned short type;
217
218 /* Symbol class. */
219 unsigned char class;
220
221 /* Number of auxiliary entries. */
222 char numaux;
223
224 /* BFD to take auxiliary entries from. */
225 bfd *auxbfd;
226
227 /* Pointer to array of auxiliary entries, if any. */
228 union internal_auxent *aux;
229 };
230
231 /* COFF linker hash table. */
232
233 struct coff_link_hash_table
234 {
235 struct bfd_link_hash_table root;
236 };
237
238 /* Look up an entry in a COFF linker hash table. */
239
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), \
243 (copy), (follow)))
244
245 /* Traverse a COFF linker hash table. */
246
247 #define coff_link_hash_traverse(table, func, info) \
248 (bfd_link_hash_traverse \
249 (&(table)->root, \
250 (boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (func), \
251 (info)))
252
253 /* Get the COFF linker hash table from a link_info structure. */
254
255 #define coff_hash_table(p) ((struct coff_link_hash_table *) ((p)->hash))
256
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 *,
279 symbol_info *ret));
280 extern asymbol *coff_bfd_make_debug_symbol PARAMS ((bfd *, PTR,
281 unsigned long));
282 extern boolean coff_find_nearest_line PARAMS ((bfd *,
283 asection *,
284 asymbol **,
285 bfd_vma offset,
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 *,
297 asection *));
298 extern void bfd_perform_slip PARAMS ((bfd *abfd, unsigned int slip,
299 asection *input_section,
300 bfd_vma val));
301
302 /* Functions and types in cofflink.c. */
303
304 #define STRING_SIZE_SIZE (4)
305
306 /* We use a hash table to merge identical enum, struct, and union
307 definitions in the linker. */
308
309 /* Information we keep for a single element (an enum value, a
310 structure or union field) in the debug merge hash table. */
311
312 struct coff_debug_merge_element
313 {
314 /* Next element. */
315 struct coff_debug_merge_element *next;
316
317 /* Name. */
318 const char *name;
319
320 /* Type. */
321 unsigned int type;
322
323 /* Symbol index for complex type. */
324 long tagndx;
325 };
326
327 /* A linked list of debug merge entries for a given name. */
328
329 struct coff_debug_merge_type
330 {
331 /* Next type with the same name. */
332 struct coff_debug_merge_type *next;
333
334 /* Class of type. */
335 int class;
336
337 /* Symbol index where this type is defined. */
338 long indx;
339
340 /* List of elements. */
341 struct coff_debug_merge_element *elements;
342 };
343
344 /* Information we store in the debug merge hash table. */
345
346 struct coff_debug_merge_hash_entry
347 {
348 struct bfd_hash_entry root;
349
350 /* A list of types with this name. */
351 struct coff_debug_merge_type *types;
352 };
353
354 /* The debug merge hash table. */
355
356 struct coff_debug_merge_hash_table
357 {
358 struct bfd_hash_table root;
359 };
360
361 /* Initialize a COFF debug merge hash table. */
362
363 #define coff_debug_merge_hash_table_init(table) \
364 (bfd_hash_table_init (&(table)->root, _bfd_coff_debug_merge_hash_newfunc))
365
366 /* Free a COFF debug merge hash table. */
367
368 #define coff_debug_merge_hash_table_free(table) \
369 (bfd_hash_table_free (&(table)->root))
370
371 /* Look up an entry in a COFF debug merge hash table. */
372
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)))
376
377 /* Information we keep for each section in the output file when doing
378 a relocateable link. */
379
380 struct coff_link_section_info
381 {
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;
387 };
388
389 /* Information that we pass around while doing the final link step. */
390
391 struct coff_final_link_info
392 {
393 /* General link information. */
394 struct bfd_link_info *info;
395 /* Output BFD. */
396 bfd *output_bfd;
397 /* Used to indicate failure in traversal routine. */
398 boolean failed;
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. */
413 asection **sec_ptrs;
414 /* Buffer large enough to hold output indices of symbols of any
415 input file. */
416 long *sym_indices;
417 /* Buffer large enough to hold output symbols for any input file. */
418 bfd_byte *outsyms;
419 /* Buffer large enough to hold external line numbers for any input
420 section. */
421 bfd_byte *linenos;
422 /* Buffer large enough to hold any input section. */
423 bfd_byte *contents;
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;
428 };
429
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 *,
436 const char *)));
437 extern struct bfd_link_hash_table *_bfd_coff_link_hash_table_create
438 PARAMS ((bfd *));
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 **));
451
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 *));
461
462
463 #define coff_get_section_contents_in_window \
464 _bfd_generic_get_section_contents_in_window
465
466 /* Functions in xcofflink.c. */
467
468 extern struct bfd_link_hash_table *_bfd_xcoff_bfd_link_hash_table_create
469 PARAMS ((bfd *));
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 **));
477
478 /* And more taken from the source .. */
479
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