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[/] [or1k/] [trunk/] [gdb-5.0/] [bfd/] [libcoff-in.h] - Blame information for rev 1765

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1 104 markom
/* 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.
5
 
6
** NOTE: libcoff.h is a GENERATED file.  Don't change it; instead,
7
** change libcoff-in.h or coffcode.h.
8
 
9
This file is part of BFD, the Binary File Descriptor library.
10
 
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.
15
 
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.
20
 
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.  */
24
 
25
#include "bfdlink.h"
26
 
27
/* Object file tdata; access macros */
28
 
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)
34
 
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)
40
 
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
 
47
#define obj_coff_local_toc_table(bfd) (coff_data(bfd)->local_toc_sym_map)
48
 
49
/* `Tdata' information kept for COFF files.  */
50
 
51
typedef struct coff_tdata
52
{
53
  struct   coff_symbol_struct *symbols; /* symtab for input bfd */
54
  unsigned int *conversion_table;
55
  int conv_table_size;
56
  file_ptr sym_filepos;
57
 
58
  struct coff_ptr_struct *raw_syments;
59
  unsigned long raw_syment_count;
60
 
61
  /* These are only valid once writing has begun */
62
  long int relocbase;
63
 
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;
74
 
75
  /* The unswapped external symbols.  May be NULL.  Read by
76
     _bfd_coff_get_external_symbols.  */
77
  PTR external_syms;
78
  /* If this is true, the external_syms may not be freed.  */
79
  boolean keep_syms;
80
 
81
  /* The string table.  May be NULL.  Read by
82
     _bfd_coff_read_string_table.  */
83
  char *strings;
84
  /* If this is true, the strings may not be freed.  */
85
  boolean keep_strings;
86
 
87
  /* is this a PE format coff file */
88
  int pe;
89
  /* Used by the COFF backend linker.  */
90
  struct coff_link_hash_entry **sym_hashes;
91
 
92
  /* used by the pe linker for PowerPC */
93
  int *local_toc_sym_map;
94
 
95
  struct bfd_link_info *link_info;
96
 
97
  /* Used by coff_find_nearest_line.  */
98
  PTR line_info;
99
 
100
  /* The timestamp from the COFF file header.  */
101
  long timestamp;
102
 
103
  /* Copy of some of the f_flags bits in the COFF filehdr structure,
104
     used by ARM code.  */
105
  flagword flags;
106
 
107
} coff_data_type;
108
 
109
/* Tdata for pe image files. */
110
typedef struct pe_tdata
111
{
112
  coff_data_type coff;
113
  struct internal_extra_pe_aouthdr pe_opthdr;
114
  int dll;
115
  int has_reloc_section;
116
  boolean (*in_reloc_p) PARAMS((bfd *, reloc_howto_type *));
117
  flagword real_flags;
118
} pe_data_type;
119
 
120
#define pe_data(bfd)            ((bfd)->tdata.pe_obj_data)
121
 
122
/* Tdata for XCOFF files.  */
123
 
124
struct xcoff_tdata
125
{
126
  /* Basic COFF information.  */
127
  coff_data_type coff;
128
 
129
  /* True if a large a.out header should be generated.  */
130
  boolean full_aouthdr;
131
 
132
  /* TOC value.  */
133
  bfd_vma toc;
134
 
135
  /* Index of section holding TOC.  */
136
  int sntoc;
137
 
138
  /* Index of section holding entry point.  */
139
  int snentry;
140
 
141
  /* .text alignment from optional header.  */
142
  int text_align_power;
143
 
144
  /* .data alignment from optional header.  */
145
  int data_align_power;
146
 
147
  /* modtype from optional header.  */
148
  short modtype;
149
 
150
  /* cputype from optional header.  */
151
  short cputype;
152
 
153
  /* maxdata from optional header.  */
154
  bfd_size_type maxdata;
155
 
156
  /* maxstack from optional header.  */
157
  bfd_size_type maxstack;
158
 
159
  /* Used by the XCOFF backend linker.  */
160
  asection **csects;
161
  unsigned long *debug_indices;
162
  unsigned int import_file_id;
163
};
164
 
165
#define xcoff_data(abfd) ((abfd)->tdata.xcoff_obj_data)
166
 
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)))
170
 
171
/* The used_by_bfd field of a section may be set to a pointer to this
172
   structure.  */
173
 
174
struct coff_section_tdata
175
{
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.  */
179
  boolean keep_relocs;
180
  /* The section contents.  This may be NULL.  */
181
  bfd_byte *contents;
182
  /* If this is true, the contents entry may not be freed.  */
183
  boolean keep_contents;
184
  /* Information cached by coff_find_nearest_line.  */
185
  bfd_vma offset;
186
  unsigned int i;
187
  const char *function;
188
  int line_base;
189
  /* A pointer used for .stab linking optimizations.  */
190
  PTR stab_info;
191
  /* Available for individual backends.  */
192
  PTR tdata;
193
};
194
 
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)
198
 
199
/* Tdata for sections in XCOFF files.  This is used by the linker.  */
200
 
201
struct xcoff_section_tdata
202
{
203
  /* Used for XCOFF csects created by the linker; points to the real
204
     XCOFF section which contains this csect.  */
205
  asection *enclosing;
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
210
     by this csect.  */
211
  unsigned long first_symndx;
212
  unsigned long last_symndx;
213
};
214
 
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)
218
 
219
/* Tdata for sections in PE files.  */
220
 
221
struct pei_section_tdata
222
{
223
  /* The virtual size of the section.  */
224
  bfd_size_type virt_size;
225
  /* The PE section flags.  */
226
  long pe_flags;
227
};
228
 
229
/* An accessor macro for the pei_section_tdata structure.  */
230
#define pei_section_data(abfd, sec) \
231
  ((struct pei_section_tdata *) coff_section_data ((abfd), (sec))->tdata)
232
 
233
/* COFF linker hash table entries.  */
234
 
235
struct coff_link_hash_entry
236
{
237
  struct bfd_link_hash_entry root;
238
 
239
  /* Symbol index in output file.  Set to -1 initially.  Set to -2 if
240
     there is a reloc against this symbol.  */
241
  long indx;
242
 
243
  /* Symbol type.  */
244
  unsigned short type;
245
 
246
  /* Symbol class.  */
247
  unsigned char class;
248
 
249
  /* Number of auxiliary entries.  */
250
  char numaux;
251
 
252
  /* BFD to take auxiliary entries from.  */
253
  bfd *auxbfd;
254
 
255
  /* Pointer to array of auxiliary entries, if any.  */
256
  union internal_auxent *aux;
257
 
258
  /* Flag word; legal values follow.  */
259
  unsigned short coff_link_hash_flags;
260
  /* Symbol is a PE section symbol.  */
261
#define COFF_LINK_HASH_PE_SECTION_SYMBOL (01)
262
};
263
 
264
/* COFF linker hash table.  */
265
 
266
struct coff_link_hash_table
267
{
268
  struct bfd_link_hash_table root;
269
  /* A pointer to information used to link stabs in sections.  */
270
  PTR stab_info;
271
};
272
 
273
/* Look up an entry in a COFF linker hash table.  */
274
 
275
#define coff_link_hash_lookup(table, string, create, copy, follow)      \
276
  ((struct coff_link_hash_entry *)                                      \
277
   bfd_link_hash_lookup (&(table)->root, (string), (create),            \
278
                         (copy), (follow)))
279
 
280
/* Traverse a COFF linker hash table.  */
281
 
282
#define coff_link_hash_traverse(table, func, info)                      \
283
  (bfd_link_hash_traverse                                               \
284
   (&(table)->root,                                                     \
285
    (boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (func),  \
286
    (info)))
287
 
288
/* Get the COFF linker hash table from a link_info structure.  */
289
 
290
#define coff_hash_table(p) ((struct coff_link_hash_table *) ((p)->hash))
291
 
292
/* Functions in coffgen.c.  */
293
extern const bfd_target *coff_object_p PARAMS ((bfd *));
294
extern struct sec *coff_section_from_bfd_index PARAMS ((bfd *, int));
295
extern long coff_get_symtab_upper_bound PARAMS ((bfd *));
296
extern long coff_get_symtab PARAMS ((bfd *, asymbol **));
297
extern int coff_count_linenumbers PARAMS ((bfd *));
298
extern struct coff_symbol_struct *coff_symbol_from PARAMS ((bfd *, asymbol *));
299
extern boolean coff_renumber_symbols PARAMS ((bfd *, int *));
300
extern void coff_mangle_symbols PARAMS ((bfd *));
301
extern boolean coff_write_symbols PARAMS ((bfd *));
302
extern boolean coff_write_linenumbers PARAMS ((bfd *));
303
extern alent *coff_get_lineno PARAMS ((bfd *, asymbol *));
304
extern asymbol *coff_section_symbol PARAMS ((bfd *, char *));
305
extern boolean _bfd_coff_get_external_symbols PARAMS ((bfd *));
306
extern const char *_bfd_coff_read_string_table PARAMS ((bfd *));
307
extern boolean _bfd_coff_free_symbols PARAMS ((bfd *));
308
extern struct coff_ptr_struct *coff_get_normalized_symtab PARAMS ((bfd *));
309
extern long coff_get_reloc_upper_bound PARAMS ((bfd *, sec_ptr));
310
extern asymbol *coff_make_empty_symbol PARAMS ((bfd *));
311
extern void coff_print_symbol PARAMS ((bfd *, PTR filep, asymbol *,
312
                                       bfd_print_symbol_type how));
313
extern void coff_get_symbol_info PARAMS ((bfd *, asymbol *,
314
                                          symbol_info *ret));
315
extern boolean _bfd_coff_is_local_label_name PARAMS ((bfd *, const char *));
316
extern asymbol *coff_bfd_make_debug_symbol PARAMS ((bfd *, PTR,
317
                                                    unsigned long));
318
extern boolean coff_find_nearest_line PARAMS ((bfd *,
319
                                               asection *,
320
                                               asymbol **,
321
                                               bfd_vma offset,
322
                                               CONST char **filename_ptr,
323
                                               CONST char **functionname_ptr,
324
                                               unsigned int *line_ptr));
325
extern int coff_sizeof_headers PARAMS ((bfd *, boolean reloc));
326
extern boolean bfd_coff_reloc16_relax_section
327
  PARAMS ((bfd *, asection *, struct bfd_link_info *, boolean *));
328
extern bfd_byte *bfd_coff_reloc16_get_relocated_section_contents
329
  PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *,
330
           bfd_byte *, boolean relocateable, asymbol **));
331
extern bfd_vma bfd_coff_reloc16_get_value PARAMS ((arelent *,
332
                                                   struct bfd_link_info *,
333
                                                   asection *));
334
extern void bfd_perform_slip PARAMS ((bfd *abfd, unsigned int slip,
335
                                      asection *input_section,
336
                                      bfd_vma val));
337
 
338
/* Functions and types in cofflink.c.  */
339
 
340
#define STRING_SIZE_SIZE (4)
341
 
342
/* We use a hash table to merge identical enum, struct, and union
343
   definitions in the linker.  */
344
 
345
/* Information we keep for a single element (an enum value, a
346
   structure or union field) in the debug merge hash table.  */
347
 
348
struct coff_debug_merge_element
349
{
350
  /* Next element.  */
351
  struct coff_debug_merge_element *next;
352
 
353
  /* Name.  */
354
  const char *name;
355
 
356
  /* Type.  */
357
  unsigned int type;
358
 
359
  /* Symbol index for complex type.  */
360
  long tagndx;
361
};
362
 
363
/* A linked list of debug merge entries for a given name.  */
364
 
365
struct coff_debug_merge_type
366
{
367
  /* Next type with the same name.  */
368
  struct coff_debug_merge_type *next;
369
 
370
  /* Class of type.  */
371
  int class;
372
 
373
  /* Symbol index where this type is defined.  */
374
  long indx;
375
 
376
  /* List of elements.  */
377
  struct coff_debug_merge_element *elements;
378
};
379
 
380
/* Information we store in the debug merge hash table.  */
381
 
382
struct coff_debug_merge_hash_entry
383
{
384
  struct bfd_hash_entry root;
385
 
386
  /* A list of types with this name.  */
387
  struct coff_debug_merge_type *types;
388
};
389
 
390
/* The debug merge hash table.  */
391
 
392
struct coff_debug_merge_hash_table
393
{
394
  struct bfd_hash_table root;
395
};
396
 
397
/* Initialize a COFF debug merge hash table.  */
398
 
399
#define coff_debug_merge_hash_table_init(table) \
400
  (bfd_hash_table_init (&(table)->root, _bfd_coff_debug_merge_hash_newfunc))
401
 
402
/* Free a COFF debug merge hash table.  */
403
 
404
#define coff_debug_merge_hash_table_free(table) \
405
  (bfd_hash_table_free (&(table)->root))
406
 
407
/* Look up an entry in a COFF debug merge hash table.  */
408
 
409
#define coff_debug_merge_hash_lookup(table, string, create, copy) \
410
  ((struct coff_debug_merge_hash_entry *) \
411
   bfd_hash_lookup (&(table)->root, (string), (create), (copy)))
412
 
413
/* Information we keep for each section in the output file when doing
414
   a relocateable link.  */
415
 
416
struct coff_link_section_info
417
{
418
  /* The relocs to be output.  */
419
  struct internal_reloc *relocs;
420
  /* For each reloc against a global symbol whose index was not known
421
     when the reloc was handled, the global hash table entry.  */
422
  struct coff_link_hash_entry **rel_hashes;
423
};
424
 
425
/* Information that we pass around while doing the final link step.  */
426
 
427
struct coff_final_link_info
428
{
429
  /* General link information.  */
430
  struct bfd_link_info *info;
431
  /* Output BFD.  */
432
  bfd *output_bfd;
433
  /* Used to indicate failure in traversal routine.  */
434
  boolean failed;
435
  /* If doing "task linking" set only during the time when we want the
436
     global symbol writer to convert the storage class of defined global
437
     symbols from global to static. */
438
  boolean global_to_static;
439
  /* Hash table for long symbol names.  */
440
  struct bfd_strtab_hash *strtab;
441
  /* When doing a relocateable link, an array of information kept for
442
     each output section, indexed by the target_index field.  */
443
  struct coff_link_section_info *section_info;
444
  /* Symbol index of last C_FILE symbol (-1 if none).  */
445
  long last_file_index;
446
  /* Contents of last C_FILE symbol.  */
447
  struct internal_syment last_file;
448
  /* Symbol index of first aux entry of last .bf symbol with an empty
449
     endndx field (-1 if none).  */
450
  long last_bf_index;
451
  /* Contents of last_bf_index aux entry.  */
452
  union internal_auxent last_bf;
453
  /* Hash table used to merge debug information.  */
454
  struct coff_debug_merge_hash_table debug_merge;
455
  /* Buffer large enough to hold swapped symbols of any input file.  */
456
  struct internal_syment *internal_syms;
457
  /* Buffer large enough to hold sections of symbols of any input file.  */
458
  asection **sec_ptrs;
459
  /* Buffer large enough to hold output indices of symbols of any
460
     input file.  */
461
  long *sym_indices;
462
  /* Buffer large enough to hold output symbols for any input file.  */
463
  bfd_byte *outsyms;
464
  /* Buffer large enough to hold external line numbers for any input
465
     section.  */
466
  bfd_byte *linenos;
467
  /* Buffer large enough to hold any input section.  */
468
  bfd_byte *contents;
469
  /* Buffer large enough to hold external relocs of any input section.  */
470
  bfd_byte *external_relocs;
471
  /* Buffer large enough to hold swapped relocs of any input section.  */
472
  struct internal_reloc *internal_relocs;
473
};
474
 
475
/* Most COFF variants have no way to record the alignment of a
476
   section.  This struct is used to set a specific alignment based on
477
   the name of the section.  */
478
 
479
struct coff_section_alignment_entry
480
{
481
  /* The section name.  */
482
  const char *name;
483
 
484
  /* This is either (unsigned int) -1, indicating that the section
485
     name must match exactly, or it is the number of letters which
486
     must match at the start of the name.  */
487
  unsigned int comparison_length;
488
 
489
  /* These macros may be used to fill in the first two fields in a
490
     structure initialization.  */
491
#define COFF_SECTION_NAME_EXACT_MATCH(name) (name), ((unsigned int) -1)
492
#define COFF_SECTION_NAME_PARTIAL_MATCH(name) (name), (sizeof (name) - 1)
493
 
494
  /* Only use this entry if the default section alignment for this
495
     target is at least that much (as a power of two).  If this field
496
     is COFF_ALIGNMENT_FIELD_EMPTY, it should be ignored.  */
497
  unsigned int default_alignment_min;
498
 
499
  /* Only use this entry if the default section alignment for this
500
     target is no greater than this (as a power of two).  If this
501
     field is COFF_ALIGNMENT_FIELD_EMPTY, it should be ignored.  */
502
  unsigned int default_alignment_max;
503
 
504
#define COFF_ALIGNMENT_FIELD_EMPTY ((unsigned int) -1)
505
 
506
  /* The desired alignment for this section (as a power of two).  */
507
  unsigned int alignment_power;
508
};
509
 
510
extern struct bfd_hash_entry *_bfd_coff_link_hash_newfunc
511
  PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
512
extern boolean _bfd_coff_link_hash_table_init
513
  PARAMS ((struct coff_link_hash_table *, bfd *,
514
           struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
515
                                       struct bfd_hash_table *,
516
                                       const char *)));
517
extern struct bfd_link_hash_table *_bfd_coff_link_hash_table_create
518
  PARAMS ((bfd *));
519
extern const char *_bfd_coff_internal_syment_name
520
  PARAMS ((bfd *, const struct internal_syment *, char *));
521
extern boolean _bfd_coff_link_add_symbols
522
  PARAMS ((bfd *, struct bfd_link_info *));
523
extern boolean _bfd_coff_final_link
524
  PARAMS ((bfd *, struct bfd_link_info *));
525
extern struct internal_reloc *_bfd_coff_read_internal_relocs
526
  PARAMS ((bfd *, asection *, boolean, bfd_byte *, boolean,
527
           struct internal_reloc *));
528
extern boolean _bfd_coff_generic_relocate_section
529
  PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
530
           struct internal_reloc *, struct internal_syment *, asection **));
531
 
532
extern struct bfd_hash_entry *_bfd_coff_debug_merge_hash_newfunc
533
  PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
534
extern boolean _bfd_coff_write_global_sym
535
  PARAMS ((struct coff_link_hash_entry *, PTR));
536
extern boolean _bfd_coff_write_task_globals
537
  PARAMS ((struct coff_link_hash_entry *, PTR));
538
extern boolean _bfd_coff_link_input_bfd
539
  PARAMS ((struct coff_final_link_info *, bfd *));
540
extern boolean _bfd_coff_reloc_link_order
541
  PARAMS ((bfd *, struct coff_final_link_info *, asection *,
542
           struct bfd_link_order *));
543
 
544
 
545
#define coff_get_section_contents_in_window \
546
  _bfd_generic_get_section_contents_in_window
547
 
548
/* Functions in xcofflink.c.  */
549
 
550
extern long _bfd_xcoff_get_dynamic_symtab_upper_bound PARAMS ((bfd *));
551
extern long _bfd_xcoff_canonicalize_dynamic_symtab
552
  PARAMS ((bfd *, asymbol **));
553
extern long _bfd_xcoff_get_dynamic_reloc_upper_bound PARAMS ((bfd *));
554
extern long _bfd_xcoff_canonicalize_dynamic_reloc
555
  PARAMS ((bfd *, arelent **, asymbol **));
556
extern struct bfd_link_hash_table *_bfd_xcoff_bfd_link_hash_table_create
557
  PARAMS ((bfd *));
558
extern boolean _bfd_xcoff_bfd_link_add_symbols
559
  PARAMS ((bfd *, struct bfd_link_info *));
560
extern boolean _bfd_xcoff_bfd_final_link
561
  PARAMS ((bfd *, struct bfd_link_info *));
562
extern boolean _bfd_ppc_xcoff_relocate_section
563
  PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
564
           struct internal_reloc *, struct internal_syment *, asection **));
565
 
566
/* Functions in coff-ppc.c.  FIXME: These are called be pe.em in the
567
   linker, and so should start with bfd and be declared in bfd.h.  */
568
 
569
extern boolean ppc_allocate_toc_section PARAMS ((struct bfd_link_info *));
570
extern boolean ppc_process_before_allocation
571
  PARAMS ((bfd *, struct bfd_link_info *));
572
 
573
/* And more taken from the source .. */
574
 

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