* configure.in: Deactivate large-file support on native 32bit
[deliverable/binutils-gdb.git] / bfd / cofflink.c
CommitLineData
252b5132 1/* COFF specific linker code.
eea6121a 2 Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
f13a99db 3 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
252b5132
RH
4 Written by Ian Lance Taylor, Cygnus Support.
5
8b956130 6 This file is part of BFD, the Binary File Descriptor library.
252b5132 7
8b956130
NC
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
cd123cb7 10 the Free Software Foundation; either version 3 of the License, or
8b956130 11 (at your option) any later version.
252b5132 12
8b956130
NC
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
252b5132 17
8b956130
NC
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
cd123cb7
NC
20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
21 MA 02110-1301, USA. */
252b5132
RH
22
23/* This file contains the COFF backend linker code. */
24
252b5132 25#include "sysdep.h"
3db64b00 26#include "bfd.h"
252b5132
RH
27#include "bfdlink.h"
28#include "libbfd.h"
29#include "coff/internal.h"
30#include "libcoff.h"
a3aa4448 31#include "safe-ctype.h"
252b5132 32
8b956130
NC
33static bfd_boolean coff_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info);
34static bfd_boolean coff_link_check_archive_element (bfd *abfd, struct bfd_link_info *info, bfd_boolean *pneeded);
35static bfd_boolean coff_link_add_symbols (bfd *abfd, struct bfd_link_info *info);
252b5132 36
b34976b6 37/* Return TRUE if SYM is a weak, external symbol. */
e4202681
NC
38#define IS_WEAK_EXTERNAL(abfd, sym) \
39 ((sym).n_sclass == C_WEAKEXT \
40 || (obj_pe (abfd) && (sym).n_sclass == C_NT_WEAK))
41
b34976b6 42/* Return TRUE if SYM is an external symbol. */
e4202681
NC
43#define IS_EXTERNAL(abfd, sym) \
44 ((sym).n_sclass == C_EXT || IS_WEAK_EXTERNAL (abfd, sym))
45
b2d638c7
ILT
46/* Define macros so that the ISFCN, et. al., macros work correctly.
47 These macros are defined in include/coff/internal.h in terms of
48 N_TMASK, etc. These definitions require a user to define local
49 variables with the appropriate names, and with values from the
50 coff_data (abfd) structure. */
51
52#define N_TMASK n_tmask
53#define N_BTSHFT n_btshft
54#define N_BTMASK n_btmask
55
252b5132
RH
56/* Create an entry in a COFF linker hash table. */
57
58struct bfd_hash_entry *
8b956130
NC
59_bfd_coff_link_hash_newfunc (struct bfd_hash_entry *entry,
60 struct bfd_hash_table *table,
61 const char *string)
252b5132
RH
62{
63 struct coff_link_hash_entry *ret = (struct coff_link_hash_entry *) entry;
64
65 /* Allocate the structure if it has not already been allocated by a
66 subclass. */
67 if (ret == (struct coff_link_hash_entry *) NULL)
68 ret = ((struct coff_link_hash_entry *)
69 bfd_hash_allocate (table, sizeof (struct coff_link_hash_entry)));
70 if (ret == (struct coff_link_hash_entry *) NULL)
71 return (struct bfd_hash_entry *) ret;
72
73 /* Call the allocation method of the superclass. */
74 ret = ((struct coff_link_hash_entry *)
75 _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret,
76 table, string));
77 if (ret != (struct coff_link_hash_entry *) NULL)
78 {
79 /* Set local fields. */
80 ret->indx = -1;
81 ret->type = T_NULL;
82 ret->class = C_NULL;
83 ret->numaux = 0;
84 ret->auxbfd = NULL;
85 ret->aux = NULL;
86 }
87
88 return (struct bfd_hash_entry *) ret;
89}
90
91/* Initialize a COFF linker hash table. */
92
b34976b6 93bfd_boolean
8b956130
NC
94_bfd_coff_link_hash_table_init (struct coff_link_hash_table *table,
95 bfd *abfd,
96 struct bfd_hash_entry *(*newfunc) (struct bfd_hash_entry *,
97 struct bfd_hash_table *,
66eb6687
AM
98 const char *),
99 unsigned int entsize)
252b5132 100{
3722b82f 101 memset (&table->stab_info, 0, sizeof (table->stab_info));
66eb6687 102 return _bfd_link_hash_table_init (&table->root, abfd, newfunc, entsize);
252b5132
RH
103}
104
105/* Create a COFF linker hash table. */
106
107struct bfd_link_hash_table *
8b956130 108_bfd_coff_link_hash_table_create (bfd *abfd)
252b5132
RH
109{
110 struct coff_link_hash_table *ret;
dc810e39 111 bfd_size_type amt = sizeof (struct coff_link_hash_table);
252b5132 112
8b956130 113 ret = bfd_malloc (amt);
252b5132
RH
114 if (ret == NULL)
115 return NULL;
8b956130 116
252b5132 117 if (! _bfd_coff_link_hash_table_init (ret, abfd,
66eb6687
AM
118 _bfd_coff_link_hash_newfunc,
119 sizeof (struct coff_link_hash_entry)))
252b5132 120 {
e2d34d7d 121 free (ret);
252b5132
RH
122 return (struct bfd_link_hash_table *) NULL;
123 }
124 return &ret->root;
125}
126
127/* Create an entry in a COFF debug merge hash table. */
128
129struct bfd_hash_entry *
8b956130
NC
130_bfd_coff_debug_merge_hash_newfunc (struct bfd_hash_entry *entry,
131 struct bfd_hash_table *table,
132 const char *string)
252b5132
RH
133{
134 struct coff_debug_merge_hash_entry *ret =
135 (struct coff_debug_merge_hash_entry *) entry;
136
137 /* Allocate the structure if it has not already been allocated by a
138 subclass. */
139 if (ret == (struct coff_debug_merge_hash_entry *) NULL)
140 ret = ((struct coff_debug_merge_hash_entry *)
141 bfd_hash_allocate (table,
142 sizeof (struct coff_debug_merge_hash_entry)));
143 if (ret == (struct coff_debug_merge_hash_entry *) NULL)
144 return (struct bfd_hash_entry *) ret;
145
146 /* Call the allocation method of the superclass. */
147 ret = ((struct coff_debug_merge_hash_entry *)
148 bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string));
149 if (ret != (struct coff_debug_merge_hash_entry *) NULL)
150 {
151 /* Set local fields. */
152 ret->types = NULL;
153 }
154
155 return (struct bfd_hash_entry *) ret;
156}
157
158/* Given a COFF BFD, add symbols to the global hash table as
159 appropriate. */
160
b34976b6 161bfd_boolean
8b956130 162_bfd_coff_link_add_symbols (bfd *abfd, struct bfd_link_info *info)
252b5132
RH
163{
164 switch (bfd_get_format (abfd))
165 {
166 case bfd_object:
167 return coff_link_add_object_symbols (abfd, info);
168 case bfd_archive:
8b956130
NC
169 return _bfd_generic_link_add_archive_symbols
170 (abfd, info, coff_link_check_archive_element);
252b5132
RH
171 default:
172 bfd_set_error (bfd_error_wrong_format);
b34976b6 173 return FALSE;
252b5132
RH
174 }
175}
176
177/* Add symbols from a COFF object file. */
178
b34976b6 179static bfd_boolean
8b956130 180coff_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info)
252b5132
RH
181{
182 if (! _bfd_coff_get_external_symbols (abfd))
b34976b6 183 return FALSE;
252b5132 184 if (! coff_link_add_symbols (abfd, info))
b34976b6 185 return FALSE;
252b5132 186
8b956130
NC
187 if (! info->keep_memory
188 && ! _bfd_coff_free_symbols (abfd))
b34976b6 189 return FALSE;
252b5132 190
b34976b6 191 return TRUE;
252b5132
RH
192}
193
194/* Look through the symbols to see if this object file should be
195 included in the link. */
196
b34976b6 197static bfd_boolean
8b956130
NC
198coff_link_check_ar_symbols (bfd *abfd,
199 struct bfd_link_info *info,
200 bfd_boolean *pneeded)
252b5132 201{
252b5132
RH
202 bfd_size_type symesz;
203 bfd_byte *esym;
204 bfd_byte *esym_end;
205
b34976b6 206 *pneeded = FALSE;
252b5132 207
252b5132
RH
208 symesz = bfd_coff_symesz (abfd);
209 esym = (bfd_byte *) obj_coff_external_syms (abfd);
210 esym_end = esym + obj_raw_syment_count (abfd) * symesz;
211 while (esym < esym_end)
212 {
213 struct internal_syment sym;
5d54c628 214 enum coff_symbol_classification classification;
252b5132 215
8b956130 216 bfd_coff_swap_sym_in (abfd, esym, &sym);
252b5132 217
5d54c628
ILT
218 classification = bfd_coff_classify_symbol (abfd, &sym);
219 if (classification == COFF_SYMBOL_GLOBAL
220 || classification == COFF_SYMBOL_COMMON)
252b5132
RH
221 {
222 const char *name;
223 char buf[SYMNMLEN + 1];
224 struct bfd_link_hash_entry *h;
225
226 /* This symbol is externally visible, and is defined by this
227 object file. */
252b5132
RH
228 name = _bfd_coff_internal_syment_name (abfd, &sym, buf);
229 if (name == NULL)
b34976b6
AM
230 return FALSE;
231 h = bfd_link_hash_lookup (info->hash, name, FALSE, FALSE, TRUE);
252b5132 232
8b956130
NC
233 /* Auto import. */
234 if (!h
235 && info->pei386_auto_import
0112cd26 236 && CONST_STRNEQ (name, "__imp_"))
8b956130
NC
237 h = bfd_link_hash_lookup (info->hash, name + 6, FALSE, FALSE, TRUE);
238
252b5132
RH
239 /* We are only interested in symbols that are currently
240 undefined. If a symbol is currently known to be common,
241 COFF linkers do not bring in an object file which defines
242 it. */
243 if (h != (struct bfd_link_hash_entry *) NULL
244 && h->type == bfd_link_hash_undefined)
245 {
246 if (! (*info->callbacks->add_archive_element) (info, abfd, name))
b34976b6
AM
247 return FALSE;
248 *pneeded = TRUE;
249 return TRUE;
252b5132
RH
250 }
251 }
252
253 esym += (sym.n_numaux + 1) * symesz;
254 }
255
256 /* We do not need this object file. */
b34976b6 257 return TRUE;
252b5132
RH
258}
259
8b956130
NC
260/* Check a single archive element to see if we need to include it in
261 the link. *PNEEDED is set according to whether this element is
262 needed in the link or not. This is called via
263 _bfd_generic_link_add_archive_symbols. */
264
265static bfd_boolean
266coff_link_check_archive_element (bfd *abfd,
267 struct bfd_link_info *info,
268 bfd_boolean *pneeded)
269{
270 if (! _bfd_coff_get_external_symbols (abfd))
271 return FALSE;
272
273 if (! coff_link_check_ar_symbols (abfd, info, pneeded))
274 return FALSE;
275
276 if (*pneeded
277 && ! coff_link_add_symbols (abfd, info))
278 return FALSE;
279
280 if ((! info->keep_memory || ! *pneeded)
281 && ! _bfd_coff_free_symbols (abfd))
282 return FALSE;
283
284 return TRUE;
285}
286
252b5132
RH
287/* Add all the symbols from an object file to the hash table. */
288
b34976b6 289static bfd_boolean
8b956130
NC
290coff_link_add_symbols (bfd *abfd,
291 struct bfd_link_info *info)
252b5132 292{
b2d638c7
ILT
293 unsigned int n_tmask = coff_data (abfd)->local_n_tmask;
294 unsigned int n_btshft = coff_data (abfd)->local_n_btshft;
295 unsigned int n_btmask = coff_data (abfd)->local_n_btmask;
b34976b6
AM
296 bfd_boolean keep_syms;
297 bfd_boolean default_copy;
252b5132
RH
298 bfd_size_type symcount;
299 struct coff_link_hash_entry **sym_hash;
300 bfd_size_type symesz;
301 bfd_byte *esym;
302 bfd_byte *esym_end;
dc810e39 303 bfd_size_type amt;
252b5132 304
d63388ff
MS
305 symcount = obj_raw_syment_count (abfd);
306
307 if (symcount == 0)
308 return TRUE; /* Nothing to do. */
309
252b5132
RH
310 /* Keep the symbols during this function, in case the linker needs
311 to read the generic symbols in order to report an error message. */
312 keep_syms = obj_coff_keep_syms (abfd);
b34976b6 313 obj_coff_keep_syms (abfd) = TRUE;
252b5132 314
252b5132 315 if (info->keep_memory)
b34976b6 316 default_copy = FALSE;
252b5132 317 else
b34976b6 318 default_copy = TRUE;
252b5132 319
252b5132
RH
320 /* We keep a list of the linker hash table entries that correspond
321 to particular symbols. */
dc810e39 322 amt = symcount * sizeof (struct coff_link_hash_entry *);
8b956130 323 sym_hash = bfd_zalloc (abfd, amt);
d63388ff 324 if (sym_hash == NULL)
252b5132
RH
325 goto error_return;
326 obj_coff_sym_hashes (abfd) = sym_hash;
252b5132
RH
327
328 symesz = bfd_coff_symesz (abfd);
329 BFD_ASSERT (symesz == bfd_coff_auxesz (abfd));
330 esym = (bfd_byte *) obj_coff_external_syms (abfd);
331 esym_end = esym + symcount * symesz;
332 while (esym < esym_end)
333 {
334 struct internal_syment sym;
5d54c628 335 enum coff_symbol_classification classification;
b34976b6 336 bfd_boolean copy;
252b5132 337
8b956130 338 bfd_coff_swap_sym_in (abfd, esym, &sym);
252b5132 339
5d54c628
ILT
340 classification = bfd_coff_classify_symbol (abfd, &sym);
341 if (classification != COFF_SYMBOL_LOCAL)
252b5132
RH
342 {
343 const char *name;
344 char buf[SYMNMLEN + 1];
345 flagword flags;
346 asection *section;
347 bfd_vma value;
b34976b6 348 bfd_boolean addit;
252b5132
RH
349
350 /* This symbol is externally visible. */
351
352 name = _bfd_coff_internal_syment_name (abfd, &sym, buf);
353 if (name == NULL)
354 goto error_return;
355
356 /* We must copy the name into memory if we got it from the
357 syment itself, rather than the string table. */
358 copy = default_copy;
359 if (sym._n._n_n._n_zeroes != 0
360 || sym._n._n_n._n_offset == 0)
b34976b6 361 copy = TRUE;
252b5132
RH
362
363 value = sym.n_value;
364
5d54c628 365 switch (classification)
252b5132 366 {
5d54c628
ILT
367 default:
368 abort ();
369
370 case COFF_SYMBOL_GLOBAL:
252b5132
RH
371 flags = BSF_EXPORT | BSF_GLOBAL;
372 section = coff_section_from_bfd_index (abfd, sym.n_scnum);
373 if (! obj_pe (abfd))
374 value -= section->vma;
5d54c628
ILT
375 break;
376
377 case COFF_SYMBOL_UNDEFINED:
378 flags = 0;
379 section = bfd_und_section_ptr;
380 break;
381
382 case COFF_SYMBOL_COMMON:
383 flags = BSF_GLOBAL;
384 section = bfd_com_section_ptr;
385 break;
386
387 case COFF_SYMBOL_PE_SECTION:
388 flags = BSF_SECTION_SYM | BSF_GLOBAL;
389 section = coff_section_from_bfd_index (abfd, sym.n_scnum);
390 break;
252b5132
RH
391 }
392
e4202681 393 if (IS_WEAK_EXTERNAL (abfd, sym))
252b5132
RH
394 flags = BSF_WEAK;
395
b34976b6 396 addit = TRUE;
7fd9c191
ILT
397
398 /* In the PE format, section symbols actually refer to the
399 start of the output section. We handle them specially
400 here. */
401 if (obj_pe (abfd) && (flags & BSF_SECTION_SYM) != 0)
402 {
403 *sym_hash = coff_link_hash_lookup (coff_hash_table (info),
b34976b6 404 name, FALSE, copy, FALSE);
7fd9c191
ILT
405 if (*sym_hash != NULL)
406 {
407 if (((*sym_hash)->coff_link_hash_flags
408 & COFF_LINK_HASH_PE_SECTION_SYMBOL) == 0
409 && (*sym_hash)->root.type != bfd_link_hash_undefined
410 && (*sym_hash)->root.type != bfd_link_hash_undefweak)
411 (*_bfd_error_handler)
412 ("Warning: symbol `%s' is both section and non-section",
413 name);
414
b34976b6 415 addit = FALSE;
7fd9c191
ILT
416 }
417 }
418
49147fca
ILT
419 /* The Microsoft Visual C compiler does string pooling by
420 hashing the constants to an internal symbol name, and
08da05b0 421 relying on the linker comdat support to discard
49147fca
ILT
422 duplicate names. However, if one string is a literal and
423 one is a data initializer, one will end up in the .data
424 section and one will end up in the .rdata section. The
425 Microsoft linker will combine them into the .data
426 section, which seems to be wrong since it might cause the
427 literal to change.
428
429 As long as there are no external references to the
430 symbols, which there shouldn't be, we can treat the .data
431 and .rdata instances as separate symbols. The comdat
432 code in the linker will do the appropriate merging. Here
433 we avoid getting a multiple definition error for one of
434 these special symbols.
435
436 FIXME: I don't think this will work in the case where
437 there are two object files which use the constants as a
438 literal and two object files which use it as a data
439 initializer. One or the other of the second object files
440 is going to wind up with an inappropriate reference. */
441 if (obj_pe (abfd)
442 && (classification == COFF_SYMBOL_GLOBAL
443 || classification == COFF_SYMBOL_PE_SECTION)
271d0fc3 444 && coff_section_data (abfd, section) != NULL
082b7297 445 && coff_section_data (abfd, section)->comdat != NULL
0112cd26 446 && CONST_STRNEQ (name, "??_")
082b7297 447 && strcmp (name, coff_section_data (abfd, section)->comdat->name) == 0)
49147fca
ILT
448 {
449 if (*sym_hash == NULL)
450 *sym_hash = coff_link_hash_lookup (coff_hash_table (info),
b34976b6 451 name, FALSE, copy, FALSE);
49147fca
ILT
452 if (*sym_hash != NULL
453 && (*sym_hash)->root.type == bfd_link_hash_defined
082b7297
L
454 && coff_section_data (abfd, (*sym_hash)->root.u.def.section)->comdat != NULL
455 && strcmp (coff_section_data (abfd, (*sym_hash)->root.u.def.section)->comdat->name,
456 coff_section_data (abfd, section)->comdat->name) == 0)
b34976b6 457 addit = FALSE;
49147fca
ILT
458 }
459
7fd9c191
ILT
460 if (addit)
461 {
462 if (! (bfd_coff_link_add_one_symbol
463 (info, abfd, name, flags, section, value,
b34976b6 464 (const char *) NULL, copy, FALSE,
7fd9c191
ILT
465 (struct bfd_link_hash_entry **) sym_hash)))
466 goto error_return;
467 }
468
469 if (obj_pe (abfd) && (flags & BSF_SECTION_SYM) != 0)
470 (*sym_hash)->coff_link_hash_flags |=
471 COFF_LINK_HASH_PE_SECTION_SYMBOL;
252b5132 472
2820a0b7
ILT
473 /* Limit the alignment of a common symbol to the possible
474 alignment of a section. There is no point to permitting
475 a higher alignment for a common symbol: we can not
476 guarantee it, and it may cause us to allocate extra space
477 in the common section. */
252b5132
RH
478 if (section == bfd_com_section_ptr
479 && (*sym_hash)->root.type == bfd_link_hash_common
480 && ((*sym_hash)->root.u.c.p->alignment_power
481 > bfd_coff_default_section_alignment_power (abfd)))
482 (*sym_hash)->root.u.c.p->alignment_power
483 = bfd_coff_default_section_alignment_power (abfd);
484
f13a99db 485 if (bfd_get_flavour (info->output_bfd) == bfd_get_flavour (abfd))
252b5132 486 {
5d3aaa74
ILT
487 /* If we don't have any symbol information currently in
488 the hash table, or if we are looking at a symbol
489 definition, then update the symbol class and type in
490 the hash table. */
491 if (((*sym_hash)->class == C_NULL
492 && (*sym_hash)->type == T_NULL)
493 || sym.n_scnum != 0
494 || (sym.n_value != 0
495 && (*sym_hash)->root.type != bfd_link_hash_defined
496 && (*sym_hash)->root.type != bfd_link_hash_defweak))
497 {
498 (*sym_hash)->class = sym.n_sclass;
499 if (sym.n_type != T_NULL)
500 {
501 /* We want to warn if the type changed, but not
502 if it changed from an unspecified type.
503 Testing the whole type byte may work, but the
504 change from (e.g.) a function of unspecified
505 type to function of known type also wants to
506 skip the warning. */
507 if ((*sym_hash)->type != T_NULL
508 && (*sym_hash)->type != sym.n_type
509 && !(DTYPE ((*sym_hash)->type) == DTYPE (sym.n_type)
510 && (BTYPE ((*sym_hash)->type) == T_NULL
511 || BTYPE (sym.n_type) == T_NULL)))
512 (*_bfd_error_handler)
d003868e
AM
513 (_("Warning: type of symbol `%s' changed from %d to %d in %B"),
514 abfd, name, (*sym_hash)->type, sym.n_type);
5d3aaa74
ILT
515
516 /* We don't want to change from a meaningful
517 base type to a null one, but if we know
518 nothing, take what little we might now know. */
519 if (BTYPE (sym.n_type) != T_NULL
520 || (*sym_hash)->type == T_NULL)
521 (*sym_hash)->type = sym.n_type;
522 }
523 (*sym_hash)->auxbfd = abfd;
252b5132
RH
524 if (sym.n_numaux != 0)
525 {
526 union internal_auxent *alloc;
527 unsigned int i;
528 bfd_byte *eaux;
529 union internal_auxent *iaux;
530
531 (*sym_hash)->numaux = sym.n_numaux;
532 alloc = ((union internal_auxent *)
533 bfd_hash_allocate (&info->hash->table,
534 (sym.n_numaux
535 * sizeof (*alloc))));
536 if (alloc == NULL)
537 goto error_return;
538 for (i = 0, eaux = esym + symesz, iaux = alloc;
539 i < sym.n_numaux;
540 i++, eaux += symesz, iaux++)
8b956130 541 bfd_coff_swap_aux_in (abfd, eaux, sym.n_type,
dc810e39 542 sym.n_sclass, (int) i,
8b956130 543 sym.n_numaux, iaux);
252b5132
RH
544 (*sym_hash)->aux = alloc;
545 }
546 }
547 }
5d54c628
ILT
548
549 if (classification == COFF_SYMBOL_PE_SECTION
550 && (*sym_hash)->numaux != 0)
551 {
552 /* Some PE sections (such as .bss) have a zero size in
553 the section header, but a non-zero size in the AUX
554 record. Correct that here.
555
556 FIXME: This is not at all the right place to do this.
557 For example, it won't help objdump. This needs to be
558 done when we swap in the section header. */
5d54c628 559 BFD_ASSERT ((*sym_hash)->numaux == 1);
eea6121a
AM
560 if (section->size == 0)
561 section->size = (*sym_hash)->aux[0].x_scn.x_scnlen;
5d54c628
ILT
562
563 /* FIXME: We could test whether the section sizes
564 matches the size in the aux entry, but apparently
565 that sometimes fails unexpectedly. */
566 }
252b5132
RH
567 }
568
569 esym += (sym.n_numaux + 1) * symesz;
570 sym_hash += sym.n_numaux + 1;
571 }
572
1049f94e 573 /* If this is a non-traditional, non-relocatable link, try to
252b5132 574 optimize the handling of any .stab/.stabstr sections. */
1049f94e 575 if (! info->relocatable
252b5132 576 && ! info->traditional_format
f13a99db 577 && bfd_get_flavour (info->output_bfd) == bfd_get_flavour (abfd)
252b5132
RH
578 && (info->strip != strip_all && info->strip != strip_debugger))
579 {
29ca8dc5 580 asection *stabstr;
252b5132 581
29ca8dc5 582 stabstr = bfd_get_section_by_name (abfd, ".stabstr");
252b5132 583
29ca8dc5
NS
584 if (stabstr != NULL)
585 {
586 bfd_size_type string_offset = 0;
587 asection *stab;
588
589 for (stab = abfd->sections; stab; stab = stab->next)
faa40977 590 if (CONST_STRNEQ (stab->name, ".stab")
29ca8dc5 591 && (!stab->name[5]
a3aa4448 592 || (stab->name[5] == '.' && ISDIGIT (stab->name[6]))))
252b5132
RH
593 {
594 struct coff_link_hash_table *table;
29ca8dc5
NS
595 struct coff_section_tdata *secdata
596 = coff_section_data (abfd, stab);
597
252b5132
RH
598 if (secdata == NULL)
599 {
dc810e39 600 amt = sizeof (struct coff_section_tdata);
8b956130 601 stab->used_by_bfd = bfd_zalloc (abfd, amt);
252b5132
RH
602 if (stab->used_by_bfd == NULL)
603 goto error_return;
604 secdata = coff_section_data (abfd, stab);
605 }
606
607 table = coff_hash_table (info);
608
609 if (! _bfd_link_section_stabs (abfd, &table->stab_info,
610 stab, stabstr,
29ca8dc5
NS
611 &secdata->stab_info,
612 &string_offset))
252b5132
RH
613 goto error_return;
614 }
615 }
616 }
617
618 obj_coff_keep_syms (abfd) = keep_syms;
619
b34976b6 620 return TRUE;
252b5132
RH
621
622 error_return:
623 obj_coff_keep_syms (abfd) = keep_syms;
b34976b6 624 return FALSE;
252b5132
RH
625}
626\f
627/* Do the final link step. */
628
b34976b6 629bfd_boolean
8b956130
NC
630_bfd_coff_final_link (bfd *abfd,
631 struct bfd_link_info *info)
252b5132
RH
632{
633 bfd_size_type symesz;
634 struct coff_final_link_info finfo;
b34976b6
AM
635 bfd_boolean debug_merge_allocated;
636 bfd_boolean long_section_names;
252b5132
RH
637 asection *o;
638 struct bfd_link_order *p;
dc810e39
AM
639 bfd_size_type max_sym_count;
640 bfd_size_type max_lineno_count;
641 bfd_size_type max_reloc_count;
642 bfd_size_type max_output_reloc_count;
643 bfd_size_type max_contents_size;
252b5132
RH
644 file_ptr rel_filepos;
645 unsigned int relsz;
646 file_ptr line_filepos;
647 unsigned int linesz;
648 bfd *sub;
649 bfd_byte *external_relocs = NULL;
650 char strbuf[STRING_SIZE_SIZE];
dc810e39 651 bfd_size_type amt;
252b5132
RH
652
653 symesz = bfd_coff_symesz (abfd);
654
655 finfo.info = info;
656 finfo.output_bfd = abfd;
657 finfo.strtab = NULL;
658 finfo.section_info = NULL;
659 finfo.last_file_index = -1;
660 finfo.last_bf_index = -1;
661 finfo.internal_syms = NULL;
662 finfo.sec_ptrs = NULL;
663 finfo.sym_indices = NULL;
664 finfo.outsyms = NULL;
665 finfo.linenos = NULL;
666 finfo.contents = NULL;
667 finfo.external_relocs = NULL;
668 finfo.internal_relocs = NULL;
b34976b6
AM
669 finfo.global_to_static = FALSE;
670 debug_merge_allocated = FALSE;
252b5132
RH
671
672 coff_data (abfd)->link_info = info;
673
674 finfo.strtab = _bfd_stringtab_init ();
675 if (finfo.strtab == NULL)
676 goto error_return;
677
678 if (! coff_debug_merge_hash_table_init (&finfo.debug_merge))
679 goto error_return;
b34976b6 680 debug_merge_allocated = TRUE;
252b5132
RH
681
682 /* Compute the file positions for all the sections. */
683 if (! abfd->output_has_begun)
684 {
685 if (! bfd_coff_compute_section_file_positions (abfd))
686 goto error_return;
687 }
688
689 /* Count the line numbers and relocation entries required for the
690 output file. Set the file positions for the relocs. */
691 rel_filepos = obj_relocbase (abfd);
692 relsz = bfd_coff_relsz (abfd);
693 max_contents_size = 0;
694 max_lineno_count = 0;
695 max_reloc_count = 0;
696
b34976b6 697 long_section_names = FALSE;
252b5132
RH
698 for (o = abfd->sections; o != NULL; o = o->next)
699 {
700 o->reloc_count = 0;
701 o->lineno_count = 0;
8423293d 702 for (p = o->map_head.link_order; p != NULL; p = p->next)
252b5132
RH
703 {
704 if (p->type == bfd_indirect_link_order)
705 {
706 asection *sec;
707
708 sec = p->u.indirect.section;
709
710 /* Mark all sections which are to be included in the
711 link. This will normally be every section. We need
712 to do this so that we can identify any sections which
713 the linker has decided to not include. */
b34976b6 714 sec->linker_mark = TRUE;
252b5132
RH
715
716 if (info->strip == strip_none
717 || info->strip == strip_some)
718 o->lineno_count += sec->lineno_count;
719
1049f94e 720 if (info->relocatable)
252b5132
RH
721 o->reloc_count += sec->reloc_count;
722
eea6121a
AM
723 if (sec->rawsize > max_contents_size)
724 max_contents_size = sec->rawsize;
725 if (sec->size > max_contents_size)
726 max_contents_size = sec->size;
252b5132
RH
727 if (sec->lineno_count > max_lineno_count)
728 max_lineno_count = sec->lineno_count;
729 if (sec->reloc_count > max_reloc_count)
730 max_reloc_count = sec->reloc_count;
731 }
1049f94e 732 else if (info->relocatable
252b5132
RH
733 && (p->type == bfd_section_reloc_link_order
734 || p->type == bfd_symbol_reloc_link_order))
735 ++o->reloc_count;
736 }
737 if (o->reloc_count == 0)
738 o->rel_filepos = 0;
739 else
740 {
741 o->flags |= SEC_RELOC;
742 o->rel_filepos = rel_filepos;
743 rel_filepos += o->reloc_count * relsz;
e9168c1e
MM
744 /* In PE COFF, if there are at least 0xffff relocations an
745 extra relocation will be written out to encode the count. */
746 if (obj_pe (abfd) && o->reloc_count >= 0xffff)
747 rel_filepos += relsz;
252b5132
RH
748 }
749
750 if (bfd_coff_long_section_names (abfd)
751 && strlen (o->name) > SCNNMLEN)
752 {
753 /* This section has a long name which must go in the string
754 table. This must correspond to the code in
755 coff_write_object_contents which puts the string index
756 into the s_name field of the section header. That is why
b34976b6
AM
757 we pass hash as FALSE. */
758 if (_bfd_stringtab_add (finfo.strtab, o->name, FALSE, FALSE)
252b5132
RH
759 == (bfd_size_type) -1)
760 goto error_return;
b34976b6 761 long_section_names = TRUE;
252b5132
RH
762 }
763 }
764
1049f94e 765 /* If doing a relocatable link, allocate space for the pointers we
252b5132 766 need to keep. */
1049f94e 767 if (info->relocatable)
252b5132
RH
768 {
769 unsigned int i;
770
771 /* We use section_count + 1, rather than section_count, because
772 the target_index fields are 1 based. */
dc810e39
AM
773 amt = abfd->section_count + 1;
774 amt *= sizeof (struct coff_link_section_info);
8b956130 775 finfo.section_info = bfd_malloc (amt);
252b5132
RH
776 if (finfo.section_info == NULL)
777 goto error_return;
778 for (i = 0; i <= abfd->section_count; i++)
779 {
780 finfo.section_info[i].relocs = NULL;
781 finfo.section_info[i].rel_hashes = NULL;
782 }
783 }
784
785 /* We now know the size of the relocs, so we can determine the file
786 positions of the line numbers. */
787 line_filepos = rel_filepos;
788 linesz = bfd_coff_linesz (abfd);
789 max_output_reloc_count = 0;
790 for (o = abfd->sections; o != NULL; o = o->next)
791 {
792 if (o->lineno_count == 0)
793 o->line_filepos = 0;
794 else
795 {
796 o->line_filepos = line_filepos;
797 line_filepos += o->lineno_count * linesz;
798 }
799
800 if (o->reloc_count != 0)
801 {
802 /* We don't know the indices of global symbols until we have
803 written out all the local symbols. For each section in
804 the output file, we keep an array of pointers to hash
805 table entries. Each entry in the array corresponds to a
806 reloc. When we find a reloc against a global symbol, we
807 set the corresponding entry in this array so that we can
808 fix up the symbol index after we have written out all the
809 local symbols.
810
811 Because of this problem, we also keep the relocs in
812 memory until the end of the link. This wastes memory,
1049f94e 813 but only when doing a relocatable link, which is not the
252b5132 814 common case. */
1049f94e 815 BFD_ASSERT (info->relocatable);
dc810e39
AM
816 amt = o->reloc_count;
817 amt *= sizeof (struct internal_reloc);
8b956130 818 finfo.section_info[o->target_index].relocs = bfd_malloc (amt);
dc810e39
AM
819 amt = o->reloc_count;
820 amt *= sizeof (struct coff_link_hash_entry *);
8b956130 821 finfo.section_info[o->target_index].rel_hashes = bfd_malloc (amt);
252b5132
RH
822 if (finfo.section_info[o->target_index].relocs == NULL
823 || finfo.section_info[o->target_index].rel_hashes == NULL)
824 goto error_return;
825
826 if (o->reloc_count > max_output_reloc_count)
827 max_output_reloc_count = o->reloc_count;
828 }
829
830 /* Reset the reloc and lineno counts, so that we can use them to
831 count the number of entries we have output so far. */
832 o->reloc_count = 0;
833 o->lineno_count = 0;
834 }
835
836 obj_sym_filepos (abfd) = line_filepos;
837
838 /* Figure out the largest number of symbols in an input BFD. Take
839 the opportunity to clear the output_has_begun fields of all the
840 input BFD's. */
841 max_sym_count = 0;
842 for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
843 {
844 size_t sz;
845
b34976b6 846 sub->output_has_begun = FALSE;
252b5132
RH
847 sz = obj_raw_syment_count (sub);
848 if (sz > max_sym_count)
849 max_sym_count = sz;
850 }
851
852 /* Allocate some buffers used while linking. */
dc810e39 853 amt = max_sym_count * sizeof (struct internal_syment);
8b956130 854 finfo.internal_syms = bfd_malloc (amt);
dc810e39 855 amt = max_sym_count * sizeof (asection *);
8b956130 856 finfo.sec_ptrs = bfd_malloc (amt);
dc810e39 857 amt = max_sym_count * sizeof (long);
8b956130
NC
858 finfo.sym_indices = bfd_malloc (amt);
859 finfo.outsyms = bfd_malloc ((max_sym_count + 1) * symesz);
dc810e39 860 amt = max_lineno_count * bfd_coff_linesz (abfd);
8b956130
NC
861 finfo.linenos = bfd_malloc (amt);
862 finfo.contents = bfd_malloc (max_contents_size);
dc810e39 863 amt = max_reloc_count * relsz;
8b956130 864 finfo.external_relocs = bfd_malloc (amt);
1049f94e 865 if (! info->relocatable)
dc810e39
AM
866 {
867 amt = max_reloc_count * sizeof (struct internal_reloc);
8b956130 868 finfo.internal_relocs = bfd_malloc (amt);
dc810e39 869 }
252b5132
RH
870 if ((finfo.internal_syms == NULL && max_sym_count > 0)
871 || (finfo.sec_ptrs == NULL && max_sym_count > 0)
872 || (finfo.sym_indices == NULL && max_sym_count > 0)
873 || finfo.outsyms == NULL
874 || (finfo.linenos == NULL && max_lineno_count > 0)
875 || (finfo.contents == NULL && max_contents_size > 0)
876 || (finfo.external_relocs == NULL && max_reloc_count > 0)
1049f94e 877 || (! info->relocatable
252b5132
RH
878 && finfo.internal_relocs == NULL
879 && max_reloc_count > 0))
880 goto error_return;
881
882 /* We now know the position of everything in the file, except that
883 we don't know the size of the symbol table and therefore we don't
884 know where the string table starts. We just build the string
885 table in memory as we go along. We process all the relocations
886 for a single input file at once. */
887 obj_raw_syment_count (abfd) = 0;
888
889 if (coff_backend_info (abfd)->_bfd_coff_start_final_link)
890 {
891 if (! bfd_coff_start_final_link (abfd, info))
892 goto error_return;
893 }
894
895 for (o = abfd->sections; o != NULL; o = o->next)
896 {
8423293d 897 for (p = o->map_head.link_order; p != NULL; p = p->next)
252b5132
RH
898 {
899 if (p->type == bfd_indirect_link_order
9bd09e22 900 && bfd_family_coff (p->u.indirect.section->owner))
252b5132
RH
901 {
902 sub = p->u.indirect.section->owner;
903 if (! bfd_coff_link_output_has_begun (sub, & finfo))
904 {
905 if (! _bfd_coff_link_input_bfd (&finfo, sub))
906 goto error_return;
b34976b6 907 sub->output_has_begun = TRUE;
252b5132
RH
908 }
909 }
910 else if (p->type == bfd_section_reloc_link_order
911 || p->type == bfd_symbol_reloc_link_order)
912 {
913 if (! _bfd_coff_reloc_link_order (abfd, &finfo, o, p))
914 goto error_return;
915 }
916 else
917 {
918 if (! _bfd_default_link_order (abfd, info, o, p))
919 goto error_return;
920 }
921 }
922 }
923
924 if (! bfd_coff_final_link_postscript (abfd, & finfo))
925 goto error_return;
244148ad 926
252b5132
RH
927 /* Free up the buffers used by _bfd_coff_link_input_bfd. */
928
929 coff_debug_merge_hash_table_free (&finfo.debug_merge);
b34976b6 930 debug_merge_allocated = FALSE;
252b5132
RH
931
932 if (finfo.internal_syms != NULL)
933 {
934 free (finfo.internal_syms);
935 finfo.internal_syms = NULL;
936 }
937 if (finfo.sec_ptrs != NULL)
938 {
939 free (finfo.sec_ptrs);
940 finfo.sec_ptrs = NULL;
941 }
942 if (finfo.sym_indices != NULL)
943 {
944 free (finfo.sym_indices);
945 finfo.sym_indices = NULL;
946 }
947 if (finfo.linenos != NULL)
948 {
949 free (finfo.linenos);
950 finfo.linenos = NULL;
951 }
952 if (finfo.contents != NULL)
953 {
954 free (finfo.contents);
955 finfo.contents = NULL;
956 }
957 if (finfo.external_relocs != NULL)
958 {
959 free (finfo.external_relocs);
960 finfo.external_relocs = NULL;
961 }
962 if (finfo.internal_relocs != NULL)
963 {
964 free (finfo.internal_relocs);
965 finfo.internal_relocs = NULL;
966 }
967
968 /* The value of the last C_FILE symbol is supposed to be the symbol
969 index of the first external symbol. Write it out again if
970 necessary. */
971 if (finfo.last_file_index != -1
972 && (unsigned int) finfo.last_file.n_value != obj_raw_syment_count (abfd))
973 {
dc810e39
AM
974 file_ptr pos;
975
252b5132 976 finfo.last_file.n_value = obj_raw_syment_count (abfd);
8b956130
NC
977 bfd_coff_swap_sym_out (abfd, &finfo.last_file,
978 finfo.outsyms);
dc810e39
AM
979
980 pos = obj_sym_filepos (abfd) + finfo.last_file_index * symesz;
981 if (bfd_seek (abfd, pos, SEEK_SET) != 0
982 || bfd_bwrite (finfo.outsyms, symesz, abfd) != symesz)
b34976b6 983 return FALSE;
252b5132
RH
984 }
985
986 /* If doing task linking (ld --task-link) then make a pass through the
987 global symbols, writing out any that are defined, and making them
244148ad 988 static. */
252b5132
RH
989 if (info->task_link)
990 {
b34976b6 991 finfo.failed = FALSE;
e92d460e 992 coff_link_hash_traverse (coff_hash_table (info),
8b956130 993 _bfd_coff_write_task_globals, &finfo);
252b5132
RH
994 if (finfo.failed)
995 goto error_return;
996 }
997
998 /* Write out the global symbols. */
b34976b6 999 finfo.failed = FALSE;
e92d460e 1000 coff_link_hash_traverse (coff_hash_table (info),
8b956130 1001 _bfd_coff_write_global_sym, &finfo);
252b5132
RH
1002 if (finfo.failed)
1003 goto error_return;
1004
1005 /* The outsyms buffer is used by _bfd_coff_write_global_sym. */
1006 if (finfo.outsyms != NULL)
1007 {
1008 free (finfo.outsyms);
1009 finfo.outsyms = NULL;
1010 }
1011
1049f94e 1012 if (info->relocatable && max_output_reloc_count > 0)
252b5132
RH
1013 {
1014 /* Now that we have written out all the global symbols, we know
1015 the symbol indices to use for relocs against them, and we can
1016 finally write out the relocs. */
dc810e39 1017 amt = max_output_reloc_count * relsz;
8b956130 1018 external_relocs = bfd_malloc (amt);
252b5132
RH
1019 if (external_relocs == NULL)
1020 goto error_return;
1021
1022 for (o = abfd->sections; o != NULL; o = o->next)
1023 {
1024 struct internal_reloc *irel;
1025 struct internal_reloc *irelend;
1026 struct coff_link_hash_entry **rel_hash;
1027 bfd_byte *erel;
1028
1029 if (o->reloc_count == 0)
1030 continue;
1031
1032 irel = finfo.section_info[o->target_index].relocs;
1033 irelend = irel + o->reloc_count;
1034 rel_hash = finfo.section_info[o->target_index].rel_hashes;
1035 erel = external_relocs;
1036 for (; irel < irelend; irel++, rel_hash++, erel += relsz)
1037 {
1038 if (*rel_hash != NULL)
1039 {
1040 BFD_ASSERT ((*rel_hash)->indx >= 0);
1041 irel->r_symndx = (*rel_hash)->indx;
1042 }
8b956130 1043 bfd_coff_swap_reloc_out (abfd, irel, erel);
252b5132
RH
1044 }
1045
cd339148
NS
1046 if (bfd_seek (abfd, o->rel_filepos, SEEK_SET) != 0)
1047 goto error_return;
1048 if (obj_pe (abfd) && o->reloc_count >= 0xffff)
1049 {
1050 /* In PE COFF, write the count of relocs as the first
1051 reloc. The header overflow bit will be set
1052 elsewhere. */
1053 struct internal_reloc incount;
1054 bfd_byte *excount = (bfd_byte *)bfd_malloc (relsz);
1055
1056 memset (&incount, 0, sizeof (incount));
1057 incount.r_vaddr = o->reloc_count + 1;
1058 bfd_coff_swap_reloc_out (abfd, (PTR) &incount, (PTR) excount);
1059 if (bfd_bwrite (excount, relsz, abfd) != relsz)
1060 /* We'll leak, but it's an error anyway. */
1061 goto error_return;
1062 free (excount);
1063 }
1064 if (bfd_bwrite (external_relocs,
1065 (bfd_size_type) relsz * o->reloc_count, abfd)
1066 != (bfd_size_type) relsz * o->reloc_count)
252b5132
RH
1067 goto error_return;
1068 }
1069
1070 free (external_relocs);
1071 external_relocs = NULL;
1072 }
1073
1074 /* Free up the section information. */
1075 if (finfo.section_info != NULL)
1076 {
1077 unsigned int i;
1078
1079 for (i = 0; i < abfd->section_count; i++)
1080 {
1081 if (finfo.section_info[i].relocs != NULL)
1082 free (finfo.section_info[i].relocs);
1083 if (finfo.section_info[i].rel_hashes != NULL)
1084 free (finfo.section_info[i].rel_hashes);
1085 }
1086 free (finfo.section_info);
1087 finfo.section_info = NULL;
1088 }
1089
1090 /* If we have optimized stabs strings, output them. */
3722b82f 1091 if (coff_hash_table (info)->stab_info.stabstr != NULL)
252b5132
RH
1092 {
1093 if (! _bfd_write_stab_strings (abfd, &coff_hash_table (info)->stab_info))
b34976b6 1094 return FALSE;
252b5132
RH
1095 }
1096
1097 /* Write out the string table. */
1098 if (obj_raw_syment_count (abfd) != 0 || long_section_names)
1099 {
dc810e39
AM
1100 file_ptr pos;
1101
1102 pos = obj_sym_filepos (abfd) + obj_raw_syment_count (abfd) * symesz;
1103 if (bfd_seek (abfd, pos, SEEK_SET) != 0)
b34976b6 1104 return FALSE;
252b5132
RH
1105
1106#if STRING_SIZE_SIZE == 4
dc810e39
AM
1107 H_PUT_32 (abfd,
1108 _bfd_stringtab_size (finfo.strtab) + STRING_SIZE_SIZE,
1109 strbuf);
252b5132 1110#else
dc810e39 1111 #error Change H_PUT_32 above
252b5132
RH
1112#endif
1113
dc810e39
AM
1114 if (bfd_bwrite (strbuf, (bfd_size_type) STRING_SIZE_SIZE, abfd)
1115 != STRING_SIZE_SIZE)
b34976b6 1116 return FALSE;
252b5132
RH
1117
1118 if (! _bfd_stringtab_emit (abfd, finfo.strtab))
b34976b6 1119 return FALSE;
d71f672e 1120
b34976b6 1121 obj_coff_strings_written (abfd) = TRUE;
252b5132
RH
1122 }
1123
1124 _bfd_stringtab_free (finfo.strtab);
1125
1126 /* Setting bfd_get_symcount to 0 will cause write_object_contents to
1127 not try to write out the symbols. */
1128 bfd_get_symcount (abfd) = 0;
1129
b34976b6 1130 return TRUE;
252b5132
RH
1131
1132 error_return:
1133 if (debug_merge_allocated)
1134 coff_debug_merge_hash_table_free (&finfo.debug_merge);
1135 if (finfo.strtab != NULL)
1136 _bfd_stringtab_free (finfo.strtab);
1137 if (finfo.section_info != NULL)
1138 {
1139 unsigned int i;
1140
1141 for (i = 0; i < abfd->section_count; i++)
1142 {
1143 if (finfo.section_info[i].relocs != NULL)
1144 free (finfo.section_info[i].relocs);
1145 if (finfo.section_info[i].rel_hashes != NULL)
1146 free (finfo.section_info[i].rel_hashes);
1147 }
1148 free (finfo.section_info);
1149 }
1150 if (finfo.internal_syms != NULL)
1151 free (finfo.internal_syms);
1152 if (finfo.sec_ptrs != NULL)
1153 free (finfo.sec_ptrs);
1154 if (finfo.sym_indices != NULL)
1155 free (finfo.sym_indices);
1156 if (finfo.outsyms != NULL)
1157 free (finfo.outsyms);
1158 if (finfo.linenos != NULL)
1159 free (finfo.linenos);
1160 if (finfo.contents != NULL)
1161 free (finfo.contents);
1162 if (finfo.external_relocs != NULL)
1163 free (finfo.external_relocs);
1164 if (finfo.internal_relocs != NULL)
1165 free (finfo.internal_relocs);
1166 if (external_relocs != NULL)
1167 free (external_relocs);
b34976b6 1168 return FALSE;
252b5132
RH
1169}
1170
8b956130 1171/* Parse out a -heap <reserved>,<commit> line. */
252b5132
RH
1172
1173static char *
8b956130 1174dores_com (char *ptr, bfd *output_bfd, int heap)
252b5132 1175{
244148ad 1176 if (coff_data(output_bfd)->pe)
252b5132
RH
1177 {
1178 int val = strtoul (ptr, &ptr, 0);
8b956130 1179
252b5132 1180 if (heap)
dc810e39 1181 pe_data(output_bfd)->pe_opthdr.SizeOfHeapReserve = val;
252b5132 1182 else
dc810e39 1183 pe_data(output_bfd)->pe_opthdr.SizeOfStackReserve = val;
252b5132 1184
244148ad 1185 if (ptr[0] == ',')
252b5132 1186 {
dc810e39 1187 val = strtoul (ptr+1, &ptr, 0);
252b5132 1188 if (heap)
dc810e39 1189 pe_data(output_bfd)->pe_opthdr.SizeOfHeapCommit = val;
252b5132 1190 else
dc810e39 1191 pe_data(output_bfd)->pe_opthdr.SizeOfStackCommit = val;
252b5132
RH
1192 }
1193 }
1194 return ptr;
1195}
1196
8b956130
NC
1197static char *
1198get_name (char *ptr, char **dst)
252b5132
RH
1199{
1200 while (*ptr == ' ')
1201 ptr++;
1202 *dst = ptr;
1203 while (*ptr && *ptr != ' ')
1204 ptr++;
1205 *ptr = 0;
1206 return ptr+1;
1207}
1208
8b956130 1209/* Process any magic embedded commands in a section called .drectve. */
244148ad 1210
252b5132 1211static int
8b956130
NC
1212process_embedded_commands (bfd *output_bfd,
1213 struct bfd_link_info *info ATTRIBUTE_UNUSED,
1214 bfd *abfd)
252b5132
RH
1215{
1216 asection *sec = bfd_get_section_by_name (abfd, ".drectve");
1217 char *s;
1218 char *e;
eea6121a 1219 bfd_byte *copy;
8b956130 1220
244148ad 1221 if (!sec)
252b5132 1222 return 1;
244148ad 1223
eea6121a 1224 if (!bfd_malloc_and_get_section (abfd, sec, &copy))
252b5132 1225 {
eea6121a
AM
1226 if (copy != NULL)
1227 free (copy);
252b5132
RH
1228 return 0;
1229 }
f075ee0c 1230 e = (char *) copy + sec->size;
8b956130 1231
f075ee0c 1232 for (s = (char *) copy; s < e ; )
252b5132 1233 {
f075ee0c 1234 if (s[0] != '-')
8b956130
NC
1235 {
1236 s++;
1237 continue;
1238 }
0112cd26 1239 if (CONST_STRNEQ (s, "-attr"))
252b5132
RH
1240 {
1241 char *name;
1242 char *attribs;
1243 asection *asec;
252b5132
RH
1244 int loop = 1;
1245 int had_write = 0;
252b5132 1246 int had_exec= 0;
8b956130 1247
252b5132 1248 s += 5;
8b956130
NC
1249 s = get_name (s, &name);
1250 s = get_name (s, &attribs);
1251
1252 while (loop)
1253 {
1254 switch (*attribs++)
1255 {
1256 case 'W':
1257 had_write = 1;
1258 break;
1259 case 'R':
8b956130
NC
1260 break;
1261 case 'S':
8b956130
NC
1262 break;
1263 case 'X':
1264 had_exec = 1;
1265 break;
1266 default:
1267 loop = 0;
1268 }
1269 }
252b5132 1270 asec = bfd_get_section_by_name (abfd, name);
8b956130
NC
1271 if (asec)
1272 {
1273 if (had_exec)
1274 asec->flags |= SEC_CODE;
1275 if (!had_write)
1276 asec->flags |= SEC_READONLY;
1277 }
252b5132 1278 }
0112cd26
NC
1279 else if (CONST_STRNEQ (s, "-heap"))
1280 s = dores_com (s + 5, output_bfd, 1);
8b956130 1281
0112cd26
NC
1282 else if (CONST_STRNEQ (s, "-stack"))
1283 s = dores_com (s + 6, output_bfd, 0);
8b956130 1284
244148ad 1285 else
252b5132
RH
1286 s++;
1287 }
1288 free (copy);
1289 return 1;
1290}
1291
1292/* Place a marker against all symbols which are used by relocations.
1293 This marker can be picked up by the 'do we skip this symbol ?'
1294 loop in _bfd_coff_link_input_bfd() and used to prevent skipping
8b956130 1295 that symbol. */
252b5132
RH
1296
1297static void
8b956130 1298mark_relocs (struct coff_final_link_info *finfo, bfd *input_bfd)
252b5132
RH
1299{
1300 asection * a;
1301
1302 if ((bfd_get_file_flags (input_bfd) & HAS_SYMS) == 0)
1303 return;
244148ad 1304
252b5132
RH
1305 for (a = input_bfd->sections; a != (asection *) NULL; a = a->next)
1306 {
1307 struct internal_reloc * internal_relocs;
1308 struct internal_reloc * irel;
1309 struct internal_reloc * irelend;
1310
252b5132
RH
1311 if ((a->flags & SEC_RELOC) == 0 || a->reloc_count < 1)
1312 continue;
a8fcf378
NC
1313 /* Don't mark relocs in excluded sections. */
1314 if (a->output_section == bfd_abs_section_ptr)
1315 continue;
252b5132
RH
1316
1317 /* Read in the relocs. */
1318 internal_relocs = _bfd_coff_read_internal_relocs
b34976b6 1319 (input_bfd, a, FALSE,
252b5132 1320 finfo->external_relocs,
1049f94e
AM
1321 finfo->info->relocatable,
1322 (finfo->info->relocatable
252b5132
RH
1323 ? (finfo->section_info[ a->output_section->target_index ].relocs + a->output_section->reloc_count)
1324 : finfo->internal_relocs)
1325 );
244148ad 1326
252b5132
RH
1327 if (internal_relocs == NULL)
1328 continue;
1329
1330 irel = internal_relocs;
1331 irelend = irel + a->reloc_count;
1332
1333 /* Place a mark in the sym_indices array (whose entries have
1334 been initialised to 0) for all of the symbols that are used
1335 in the relocation table. This will then be picked up in the
8b956130 1336 skip/don't-skip pass. */
252b5132 1337 for (; irel < irelend; irel++)
8b956130 1338 finfo->sym_indices[ irel->r_symndx ] = -1;
252b5132
RH
1339 }
1340}
1341
1342/* Link an input file into the linker output file. This function
1343 handles all the sections and relocations of the input file at once. */
1344
b34976b6 1345bfd_boolean
8b956130 1346_bfd_coff_link_input_bfd (struct coff_final_link_info *finfo, bfd *input_bfd)
252b5132 1347{
b2d638c7
ILT
1348 unsigned int n_tmask = coff_data (input_bfd)->local_n_tmask;
1349 unsigned int n_btshft = coff_data (input_bfd)->local_n_btshft;
b34976b6 1350 bfd_boolean (*adjust_symndx)
8b956130
NC
1351 (bfd *, struct bfd_link_info *, bfd *, asection *,
1352 struct internal_reloc *, bfd_boolean *);
252b5132
RH
1353 bfd *output_bfd;
1354 const char *strings;
1355 bfd_size_type syment_base;
b34976b6 1356 bfd_boolean copy, hash;
252b5132
RH
1357 bfd_size_type isymesz;
1358 bfd_size_type osymesz;
1359 bfd_size_type linesz;
1360 bfd_byte *esym;
1361 bfd_byte *esym_end;
1362 struct internal_syment *isymp;
1363 asection **secpp;
1364 long *indexp;
1365 unsigned long output_index;
1366 bfd_byte *outsym;
1367 struct coff_link_hash_entry **sym_hash;
1368 asection *o;
1369
1370 /* Move all the symbols to the output file. */
1371
1372 output_bfd = finfo->output_bfd;
252b5132
RH
1373 strings = NULL;
1374 syment_base = obj_raw_syment_count (output_bfd);
1375 isymesz = bfd_coff_symesz (input_bfd);
1376 osymesz = bfd_coff_symesz (output_bfd);
1377 linesz = bfd_coff_linesz (input_bfd);
1378 BFD_ASSERT (linesz == bfd_coff_linesz (output_bfd));
1379
b34976b6 1380 copy = FALSE;
252b5132 1381 if (! finfo->info->keep_memory)
b34976b6
AM
1382 copy = TRUE;
1383 hash = TRUE;
252b5132 1384 if ((output_bfd->flags & BFD_TRADITIONAL_FORMAT) != 0)
b34976b6 1385 hash = FALSE;
252b5132
RH
1386
1387 if (! _bfd_coff_get_external_symbols (input_bfd))
b34976b6 1388 return FALSE;
252b5132
RH
1389
1390 esym = (bfd_byte *) obj_coff_external_syms (input_bfd);
1391 esym_end = esym + obj_raw_syment_count (input_bfd) * isymesz;
1392 isymp = finfo->internal_syms;
1393 secpp = finfo->sec_ptrs;
1394 indexp = finfo->sym_indices;
1395 output_index = syment_base;
1396 outsym = finfo->outsyms;
1397
8b956130
NC
1398 if (coff_data (output_bfd)->pe
1399 && ! process_embedded_commands (output_bfd, finfo->info, input_bfd))
1400 return FALSE;
252b5132 1401
8b956130
NC
1402 /* If we are going to perform relocations and also strip/discard some
1403 symbols then we must make sure that we do not strip/discard those
1404 symbols that are going to be involved in the relocations. */
252b5132
RH
1405 if (( finfo->info->strip != strip_none
1406 || finfo->info->discard != discard_none)
1049f94e 1407 && finfo->info->relocatable)
252b5132 1408 {
8b956130 1409 /* Mark the symbol array as 'not-used'. */
244148ad
KH
1410 memset (indexp, 0, obj_raw_syment_count (input_bfd) * sizeof * indexp);
1411
252b5132
RH
1412 mark_relocs (finfo, input_bfd);
1413 }
1414
1415 while (esym < esym_end)
1416 {
1417 struct internal_syment isym;
5d54c628 1418 enum coff_symbol_classification classification;
b34976b6
AM
1419 bfd_boolean skip;
1420 bfd_boolean global;
1421 bfd_boolean dont_skip_symbol;
252b5132
RH
1422 int add;
1423
8b956130 1424 bfd_coff_swap_sym_in (input_bfd, esym, isymp);
252b5132
RH
1425
1426 /* Make a copy of *isymp so that the relocate_section function
1427 always sees the original values. This is more reliable than
1428 always recomputing the symbol value even if we are stripping
1429 the symbol. */
1430 isym = *isymp;
1431
5d54c628
ILT
1432 classification = bfd_coff_classify_symbol (input_bfd, &isym);
1433 switch (classification)
252b5132 1434 {
5d54c628
ILT
1435 default:
1436 abort ();
1437 case COFF_SYMBOL_GLOBAL:
1438 case COFF_SYMBOL_PE_SECTION:
1439 case COFF_SYMBOL_LOCAL:
1440 *secpp = coff_section_from_bfd_index (input_bfd, isym.n_scnum);
1441 break;
1442 case COFF_SYMBOL_COMMON:
1443 *secpp = bfd_com_section_ptr;
1444 break;
1445 case COFF_SYMBOL_UNDEFINED:
1446 *secpp = bfd_und_section_ptr;
1447 break;
252b5132
RH
1448 }
1449
1450 /* Extract the flag indicating if this symbol is used by a
1451 relocation. */
1452 if ((finfo->info->strip != strip_none
1453 || finfo->info->discard != discard_none)
1049f94e 1454 && finfo->info->relocatable)
252b5132
RH
1455 dont_skip_symbol = *indexp;
1456 else
b34976b6 1457 dont_skip_symbol = FALSE;
244148ad 1458
252b5132
RH
1459 *indexp = -1;
1460
b34976b6
AM
1461 skip = FALSE;
1462 global = FALSE;
252b5132
RH
1463 add = 1 + isym.n_numaux;
1464
1465 /* If we are stripping all symbols, we want to skip this one. */
1466 if (finfo->info->strip == strip_all && ! dont_skip_symbol)
b34976b6 1467 skip = TRUE;
252b5132
RH
1468
1469 if (! skip)
1470 {
5d54c628 1471 switch (classification)
252b5132 1472 {
5d54c628
ILT
1473 default:
1474 abort ();
1475 case COFF_SYMBOL_GLOBAL:
1476 case COFF_SYMBOL_COMMON:
1477 case COFF_SYMBOL_PE_SECTION:
252b5132
RH
1478 /* This is a global symbol. Global symbols come at the
1479 end of the symbol table, so skip them for now.
1480 Locally defined function symbols, however, are an
1481 exception, and are not moved to the end. */
b34976b6 1482 global = TRUE;
5d54c628 1483 if (! ISFCN (isym.n_type))
b34976b6 1484 skip = TRUE;
5d54c628
ILT
1485 break;
1486
1487 case COFF_SYMBOL_UNDEFINED:
1488 /* Undefined symbols are left for the end. */
b34976b6
AM
1489 global = TRUE;
1490 skip = TRUE;
5d54c628
ILT
1491 break;
1492
1493 case COFF_SYMBOL_LOCAL:
252b5132
RH
1494 /* This is a local symbol. Skip it if we are discarding
1495 local symbols. */
1496 if (finfo->info->discard == discard_all && ! dont_skip_symbol)
b34976b6 1497 skip = TRUE;
5d54c628 1498 break;
252b5132
RH
1499 }
1500 }
1501
440c4607
NC
1502#ifndef COFF_WITH_PE
1503 /* Skip section symbols for sections which are not going to be
862517b6 1504 emitted. */
440c4607 1505 if (!skip
3922a8c1 1506 && dont_skip_symbol == 0
440c4607
NC
1507 && isym.n_sclass == C_STAT
1508 && isym.n_type == T_NULL
3922a8c1
NC
1509 && isym.n_numaux > 0
1510 && (*secpp)->output_section == bfd_abs_section_ptr)
1511 skip = TRUE;
440c4607
NC
1512#endif
1513
252b5132
RH
1514 /* If we stripping debugging symbols, and this is a debugging
1515 symbol, then skip it. FIXME: gas sets the section to N_ABS
1516 for some types of debugging symbols; I don't know if this is
1517 a bug or not. In any case, we handle it here. */
1518 if (! skip
1519 && finfo->info->strip == strip_debugger
1520 && ! dont_skip_symbol
1521 && (isym.n_scnum == N_DEBUG
1522 || (isym.n_scnum == N_ABS
1523 && (isym.n_sclass == C_AUTO
1524 || isym.n_sclass == C_REG
1525 || isym.n_sclass == C_MOS
1526 || isym.n_sclass == C_MOE
1527 || isym.n_sclass == C_MOU
1528 || isym.n_sclass == C_ARG
1529 || isym.n_sclass == C_REGPARM
1530 || isym.n_sclass == C_FIELD
1531 || isym.n_sclass == C_EOS))))
b34976b6 1532 skip = TRUE;
252b5132
RH
1533
1534 /* If some symbols are stripped based on the name, work out the
1535 name and decide whether to skip this symbol. */
1536 if (! skip
1537 && (finfo->info->strip == strip_some
1538 || finfo->info->discard == discard_l))
1539 {
1540 const char *name;
1541 char buf[SYMNMLEN + 1];
1542
1543 name = _bfd_coff_internal_syment_name (input_bfd, &isym, buf);
1544 if (name == NULL)
b34976b6 1545 return FALSE;
252b5132
RH
1546
1547 if (! dont_skip_symbol
1548 && ((finfo->info->strip == strip_some
b34976b6
AM
1549 && (bfd_hash_lookup (finfo->info->keep_hash, name, FALSE,
1550 FALSE) == NULL))
252b5132
RH
1551 || (! global
1552 && finfo->info->discard == discard_l
1553 && bfd_is_local_label_name (input_bfd, name))))
b34976b6 1554 skip = TRUE;
252b5132
RH
1555 }
1556
1557 /* If this is an enum, struct, or union tag, see if we have
1558 already output an identical type. */
1559 if (! skip
1560 && (finfo->output_bfd->flags & BFD_TRADITIONAL_FORMAT) == 0
1561 && (isym.n_sclass == C_ENTAG
1562 || isym.n_sclass == C_STRTAG
1563 || isym.n_sclass == C_UNTAG)
1564 && isym.n_numaux == 1)
1565 {
1566 const char *name;
1567 char buf[SYMNMLEN + 1];
1568 struct coff_debug_merge_hash_entry *mh;
1569 struct coff_debug_merge_type *mt;
1570 union internal_auxent aux;
1571 struct coff_debug_merge_element **epp;
1572 bfd_byte *esl, *eslend;
1573 struct internal_syment *islp;
dc810e39 1574 bfd_size_type amt;
252b5132
RH
1575
1576 name = _bfd_coff_internal_syment_name (input_bfd, &isym, buf);
1577 if (name == NULL)
b34976b6 1578 return FALSE;
252b5132
RH
1579
1580 /* Ignore fake names invented by compiler; treat them all as
1581 the same name. */
1582 if (*name == '~' || *name == '.' || *name == '$'
1583 || (*name == bfd_get_symbol_leading_char (input_bfd)
1584 && (name[1] == '~' || name[1] == '.' || name[1] == '$')))
1585 name = "";
1586
1587 mh = coff_debug_merge_hash_lookup (&finfo->debug_merge, name,
b34976b6 1588 TRUE, TRUE);
252b5132 1589 if (mh == NULL)
b34976b6 1590 return FALSE;
252b5132
RH
1591
1592 /* Allocate memory to hold type information. If this turns
1593 out to be a duplicate, we pass this address to
1594 bfd_release. */
dc810e39 1595 amt = sizeof (struct coff_debug_merge_type);
8b956130 1596 mt = bfd_alloc (input_bfd, amt);
252b5132 1597 if (mt == NULL)
b34976b6 1598 return FALSE;
252b5132
RH
1599 mt->class = isym.n_sclass;
1600
1601 /* Pick up the aux entry, which points to the end of the tag
1602 entries. */
8b956130 1603 bfd_coff_swap_aux_in (input_bfd, (esym + isymesz),
252b5132 1604 isym.n_type, isym.n_sclass, 0, isym.n_numaux,
8b956130 1605 &aux);
252b5132
RH
1606
1607 /* Gather the elements. */
1608 epp = &mt->elements;
1609 mt->elements = NULL;
1610 islp = isymp + 2;
1611 esl = esym + 2 * isymesz;
1612 eslend = ((bfd_byte *) obj_coff_external_syms (input_bfd)
1613 + aux.x_sym.x_fcnary.x_fcn.x_endndx.l * isymesz);
1614 while (esl < eslend)
1615 {
1616 const char *elename;
1617 char elebuf[SYMNMLEN + 1];
00692651 1618 char *name_copy;
252b5132 1619
8b956130 1620 bfd_coff_swap_sym_in (input_bfd, esl, islp);
252b5132 1621
dc810e39 1622 amt = sizeof (struct coff_debug_merge_element);
8b956130 1623 *epp = bfd_alloc (input_bfd, amt);
252b5132 1624 if (*epp == NULL)
b34976b6 1625 return FALSE;
252b5132
RH
1626
1627 elename = _bfd_coff_internal_syment_name (input_bfd, islp,
1628 elebuf);
1629 if (elename == NULL)
b34976b6 1630 return FALSE;
252b5132 1631
dc810e39 1632 amt = strlen (elename) + 1;
8b956130 1633 name_copy = bfd_alloc (input_bfd, amt);
00692651 1634 if (name_copy == NULL)
b34976b6 1635 return FALSE;
00692651 1636 strcpy (name_copy, elename);
252b5132 1637
00692651 1638 (*epp)->name = name_copy;
252b5132
RH
1639 (*epp)->type = islp->n_type;
1640 (*epp)->tagndx = 0;
1641 if (islp->n_numaux >= 1
1642 && islp->n_type != T_NULL
1643 && islp->n_sclass != C_EOS)
1644 {
1645 union internal_auxent eleaux;
1646 long indx;
1647
8b956130 1648 bfd_coff_swap_aux_in (input_bfd, (esl + isymesz),
252b5132 1649 islp->n_type, islp->n_sclass, 0,
8b956130 1650 islp->n_numaux, &eleaux);
252b5132
RH
1651 indx = eleaux.x_sym.x_tagndx.l;
1652
1653 /* FIXME: If this tagndx entry refers to a symbol
1654 defined later in this file, we just ignore it.
1655 Handling this correctly would be tedious, and may
1656 not be required. */
252b5132
RH
1657 if (indx > 0
1658 && (indx
1659 < ((esym -
1660 (bfd_byte *) obj_coff_external_syms (input_bfd))
1661 / (long) isymesz)))
1662 {
1663 (*epp)->tagndx = finfo->sym_indices[indx];
1664 if ((*epp)->tagndx < 0)
1665 (*epp)->tagndx = 0;
1666 }
1667 }
1668 epp = &(*epp)->next;
1669 *epp = NULL;
1670
1671 esl += (islp->n_numaux + 1) * isymesz;
1672 islp += islp->n_numaux + 1;
1673 }
1674
1675 /* See if we already have a definition which matches this
1676 type. We always output the type if it has no elements,
1677 for simplicity. */
1678 if (mt->elements == NULL)
8b956130 1679 bfd_release (input_bfd, mt);
252b5132
RH
1680 else
1681 {
1682 struct coff_debug_merge_type *mtl;
1683
1684 for (mtl = mh->types; mtl != NULL; mtl = mtl->next)
1685 {
1686 struct coff_debug_merge_element *me, *mel;
1687
1688 if (mtl->class != mt->class)
1689 continue;
1690
1691 for (me = mt->elements, mel = mtl->elements;
1692 me != NULL && mel != NULL;
1693 me = me->next, mel = mel->next)
1694 {
1695 if (strcmp (me->name, mel->name) != 0
1696 || me->type != mel->type
1697 || me->tagndx != mel->tagndx)
1698 break;
1699 }
1700
1701 if (me == NULL && mel == NULL)
1702 break;
1703 }
1704
1705 if (mtl == NULL || (bfd_size_type) mtl->indx >= syment_base)
1706 {
1707 /* This is the first definition of this type. */
1708 mt->indx = output_index;
1709 mt->next = mh->types;
1710 mh->types = mt;
1711 }
1712 else
1713 {
1714 /* This is a redefinition which can be merged. */
8b956130 1715 bfd_release (input_bfd, mt);
252b5132
RH
1716 *indexp = mtl->indx;
1717 add = (eslend - esym) / isymesz;
b34976b6 1718 skip = TRUE;
252b5132
RH
1719 }
1720 }
1721 }
1722
1723 /* We now know whether we are to skip this symbol or not. */
1724 if (! skip)
1725 {
1726 /* Adjust the symbol in order to output it. */
1727
1728 if (isym._n._n_n._n_zeroes == 0
1729 && isym._n._n_n._n_offset != 0)
1730 {
1731 const char *name;
1732 bfd_size_type indx;
1733
1734 /* This symbol has a long name. Enter it in the string
1735 table we are building. Note that we do not check
1736 bfd_coff_symname_in_debug. That is only true for
1737 XCOFF, and XCOFF requires different linking code
1738 anyhow. */
8b956130 1739 name = _bfd_coff_internal_syment_name (input_bfd, &isym, NULL);
252b5132 1740 if (name == NULL)
b34976b6 1741 return FALSE;
252b5132
RH
1742 indx = _bfd_stringtab_add (finfo->strtab, name, hash, copy);
1743 if (indx == (bfd_size_type) -1)
b34976b6 1744 return FALSE;
252b5132
RH
1745 isym._n._n_n._n_offset = STRING_SIZE_SIZE + indx;
1746 }
1747
8add8e30 1748 switch (isym.n_sclass)
252b5132 1749 {
8add8e30
ILT
1750 case C_AUTO:
1751 case C_MOS:
1752 case C_EOS:
1753 case C_MOE:
1754 case C_MOU:
1755 case C_UNTAG:
1756 case C_STRTAG:
1757 case C_ENTAG:
1758 case C_TPDEF:
1759 case C_ARG:
1760 case C_USTATIC:
1761 case C_REG:
1762 case C_REGPARM:
1763 case C_FIELD:
1764 /* The symbol value should not be modified. */
1765 break;
1766
1767 case C_FCN:
1768 if (obj_pe (input_bfd)
1769 && strcmp (isym.n_name, ".bf") != 0
1770 && isym.n_scnum > 0)
1771 {
1772 /* For PE, .lf and .ef get their value left alone,
1773 while .bf gets relocated. However, they all have
1774 "real" section numbers, and need to be moved into
1775 the new section. */
1776 isym.n_scnum = (*secpp)->output_section->target_index;
1777 break;
1778 }
1779 /* Fall through. */
1780 default:
1781 case C_LABEL: /* Not completely sure about these 2 */
1782 case C_EXTDEF:
1783 case C_BLOCK:
1784 case C_EFCN:
1785 case C_NULL:
1786 case C_EXT:
1787 case C_STAT:
1788 case C_SECTION:
1789 case C_NT_WEAK:
1790 /* Compute new symbol location. */
1791 if (isym.n_scnum > 0)
1792 {
1793 isym.n_scnum = (*secpp)->output_section->target_index;
1794 isym.n_value += (*secpp)->output_offset;
1795 if (! obj_pe (input_bfd))
1796 isym.n_value -= (*secpp)->vma;
1797 if (! obj_pe (finfo->output_bfd))
1798 isym.n_value += (*secpp)->output_section->vma;
1799 }
1800 break;
1801
1802 case C_FILE:
1803 /* The value of a C_FILE symbol is the symbol index of
1804 the next C_FILE symbol. The value of the last C_FILE
1805 symbol is the symbol index to the first external
1806 symbol (actually, coff_renumber_symbols does not get
1807 this right--it just sets the value of the last C_FILE
1808 symbol to zero--and nobody has ever complained about
1809 it). We try to get this right, below, just before we
1810 write the symbols out, but in the general case we may
1811 have to write the symbol out twice. */
252b5132 1812 if (finfo->last_file_index != -1
cea4409c 1813 && finfo->last_file.n_value != (bfd_vma) output_index)
252b5132 1814 {
8add8e30
ILT
1815 /* We must correct the value of the last C_FILE
1816 entry. */
252b5132
RH
1817 finfo->last_file.n_value = output_index;
1818 if ((bfd_size_type) finfo->last_file_index >= syment_base)
1819 {
1820 /* The last C_FILE symbol is in this input file. */
1821 bfd_coff_swap_sym_out (output_bfd,
8b956130
NC
1822 &finfo->last_file,
1823 (finfo->outsyms
1824 + ((finfo->last_file_index
1825 - syment_base)
1826 * osymesz)));
252b5132
RH
1827 }
1828 else
1829 {
dc810e39
AM
1830 file_ptr pos;
1831
252b5132
RH
1832 /* We have already written out the last C_FILE
1833 symbol. We need to write it out again. We
1834 borrow *outsym temporarily. */
1835 bfd_coff_swap_sym_out (output_bfd,
8b956130 1836 &finfo->last_file, outsym);
dc810e39
AM
1837 pos = obj_sym_filepos (output_bfd);
1838 pos += finfo->last_file_index * osymesz;
1839 if (bfd_seek (output_bfd, pos, SEEK_SET) != 0
1840 || bfd_bwrite (outsym, osymesz, output_bfd) != osymesz)
b34976b6 1841 return FALSE;
252b5132
RH
1842 }
1843 }
1844
1845 finfo->last_file_index = output_index;
1846 finfo->last_file = isym;
8add8e30 1847 break;
252b5132
RH
1848 }
1849
1850 /* If doing task linking, convert normal global function symbols to
e4202681
NC
1851 static functions. */
1852 if (finfo->info->task_link && IS_EXTERNAL (input_bfd, isym))
252b5132
RH
1853 isym.n_sclass = C_STAT;
1854
1855 /* Output the symbol. */
8b956130 1856 bfd_coff_swap_sym_out (output_bfd, &isym, outsym);
252b5132
RH
1857
1858 *indexp = output_index;
1859
1860 if (global)
1861 {
1862 long indx;
1863 struct coff_link_hash_entry *h;
1864
1865 indx = ((esym - (bfd_byte *) obj_coff_external_syms (input_bfd))
1866 / isymesz);
1867 h = obj_coff_sym_hashes (input_bfd)[indx];
1868 if (h == NULL)
1869 {
1870 /* This can happen if there were errors earlier in
1871 the link. */
1872 bfd_set_error (bfd_error_bad_value);
b34976b6 1873 return FALSE;
252b5132
RH
1874 }
1875 h->indx = output_index;
1876 }
1877
1878 output_index += add;
1879 outsym += add * osymesz;
1880 }
1881
1882 esym += add * isymesz;
1883 isymp += add;
1884 ++secpp;
1885 ++indexp;
1886 for (--add; add > 0; --add)
1887 {
1888 *secpp++ = NULL;
1889 *indexp++ = -1;
1890 }
1891 }
1892
1893 /* Fix up the aux entries. This must be done in a separate pass,
1894 because we don't know the correct symbol indices until we have
1895 already decided which symbols we are going to keep. */
252b5132
RH
1896 esym = (bfd_byte *) obj_coff_external_syms (input_bfd);
1897 esym_end = esym + obj_raw_syment_count (input_bfd) * isymesz;
1898 isymp = finfo->internal_syms;
1899 indexp = finfo->sym_indices;
1900 sym_hash = obj_coff_sym_hashes (input_bfd);
1901 outsym = finfo->outsyms;
8b956130 1902
252b5132
RH
1903 while (esym < esym_end)
1904 {
1905 int add;
1906
1907 add = 1 + isymp->n_numaux;
1908
1909 if ((*indexp < 0
1910 || (bfd_size_type) *indexp < syment_base)
1911 && (*sym_hash == NULL
1912 || (*sym_hash)->auxbfd != input_bfd))
1913 esym += add * isymesz;
1914 else
1915 {
1916 struct coff_link_hash_entry *h;
1917 int i;
1918
1919 h = NULL;
1920 if (*indexp < 0)
1921 {
1922 h = *sym_hash;
1923
1924 /* The m68k-motorola-sysv assembler will sometimes
1925 generate two symbols with the same name, but only one
1926 will have aux entries. */
1927 BFD_ASSERT (isymp->n_numaux == 0
cfc9dfb1 1928 || h->numaux == 0
252b5132
RH
1929 || h->numaux == isymp->n_numaux);
1930 }
1931
1932 esym += isymesz;
1933
1934 if (h == NULL)
1935 outsym += osymesz;
1936
1937 /* Handle the aux entries. This handling is based on
1938 coff_pointerize_aux. I don't know if it always correct. */
1939 for (i = 0; i < isymp->n_numaux && esym < esym_end; i++)
1940 {
1941 union internal_auxent aux;
1942 union internal_auxent *auxp;
1943
cfc9dfb1 1944 if (h != NULL && h->aux != NULL && (h->numaux > i))
252b5132
RH
1945 auxp = h->aux + i;
1946 else
1947 {
8b956130
NC
1948 bfd_coff_swap_aux_in (input_bfd, esym, isymp->n_type,
1949 isymp->n_sclass, i, isymp->n_numaux, &aux);
252b5132
RH
1950 auxp = &aux;
1951 }
1952
1953 if (isymp->n_sclass == C_FILE)
1954 {
1955 /* If this is a long filename, we must put it in the
1956 string table. */
1957 if (auxp->x_file.x_n.x_zeroes == 0
1958 && auxp->x_file.x_n.x_offset != 0)
1959 {
1960 const char *filename;
1961 bfd_size_type indx;
1962
1963 BFD_ASSERT (auxp->x_file.x_n.x_offset
1964 >= STRING_SIZE_SIZE);
1965 if (strings == NULL)
1966 {
1967 strings = _bfd_coff_read_string_table (input_bfd);
1968 if (strings == NULL)
b34976b6 1969 return FALSE;
252b5132
RH
1970 }
1971 filename = strings + auxp->x_file.x_n.x_offset;
1972 indx = _bfd_stringtab_add (finfo->strtab, filename,
1973 hash, copy);
1974 if (indx == (bfd_size_type) -1)
b34976b6 1975 return FALSE;
252b5132
RH
1976 auxp->x_file.x_n.x_offset = STRING_SIZE_SIZE + indx;
1977 }
1978 }
0c429e07
NC
1979 else if ((isymp->n_sclass != C_STAT || isymp->n_type != T_NULL)
1980 && isymp->n_sclass != C_NT_WEAK)
252b5132
RH
1981 {
1982 unsigned long indx;
1983
1984 if (ISFCN (isymp->n_type)
1985 || ISTAG (isymp->n_sclass)
1986 || isymp->n_sclass == C_BLOCK
1987 || isymp->n_sclass == C_FCN)
1988 {
1989 indx = auxp->x_sym.x_fcnary.x_fcn.x_endndx.l;
1990 if (indx > 0
1991 && indx < obj_raw_syment_count (input_bfd))
1992 {
1993 /* We look forward through the symbol for
1994 the index of the next symbol we are going
1995 to include. I don't know if this is
1996 entirely right. */
1997 while ((finfo->sym_indices[indx] < 0
1998 || ((bfd_size_type) finfo->sym_indices[indx]
1999 < syment_base))
2000 && indx < obj_raw_syment_count (input_bfd))
2001 ++indx;
2002 if (indx >= obj_raw_syment_count (input_bfd))
2003 indx = output_index;
2004 else
2005 indx = finfo->sym_indices[indx];
2006 auxp->x_sym.x_fcnary.x_fcn.x_endndx.l = indx;
2007 }
2008 }
2009
2010 indx = auxp->x_sym.x_tagndx.l;
2011 if (indx > 0 && indx < obj_raw_syment_count (input_bfd))
2012 {
2013 long symindx;
2014
2015 symindx = finfo->sym_indices[indx];
2016 if (symindx < 0)
2017 auxp->x_sym.x_tagndx.l = 0;
2018 else
2019 auxp->x_sym.x_tagndx.l = symindx;
2020 }
2021
2022 /* The .bf symbols are supposed to be linked through
2023 the endndx field. We need to carry this list
2024 across object files. */
2025 if (i == 0
2026 && h == NULL
2027 && isymp->n_sclass == C_FCN
2028 && (isymp->_n._n_n._n_zeroes != 0
2029 || isymp->_n._n_n._n_offset == 0)
2030 && isymp->_n._n_name[0] == '.'
2031 && isymp->_n._n_name[1] == 'b'
2032 && isymp->_n._n_name[2] == 'f'
2033 && isymp->_n._n_name[3] == '\0')
2034 {
2035 if (finfo->last_bf_index != -1)
2036 {
2037 finfo->last_bf.x_sym.x_fcnary.x_fcn.x_endndx.l =
2038 *indexp;
2039
2040 if ((bfd_size_type) finfo->last_bf_index
2041 >= syment_base)
2042 {
8b956130 2043 void *auxout;
252b5132
RH
2044
2045 /* The last .bf symbol is in this input
2046 file. This will only happen if the
2047 assembler did not set up the .bf
2048 endndx symbols correctly. */
8b956130
NC
2049 auxout = (finfo->outsyms
2050 + ((finfo->last_bf_index
2051 - syment_base)
2052 * osymesz));
2053
252b5132 2054 bfd_coff_swap_aux_out (output_bfd,
8b956130 2055 &finfo->last_bf,
252b5132
RH
2056 isymp->n_type,
2057 isymp->n_sclass,
2058 0, isymp->n_numaux,
2059 auxout);
2060 }
2061 else
2062 {
dc810e39
AM
2063 file_ptr pos;
2064
252b5132
RH
2065 /* We have already written out the last
2066 .bf aux entry. We need to write it
2067 out again. We borrow *outsym
2068 temporarily. FIXME: This case should
2069 be made faster. */
2070 bfd_coff_swap_aux_out (output_bfd,
8b956130 2071 &finfo->last_bf,
252b5132
RH
2072 isymp->n_type,
2073 isymp->n_sclass,
2074 0, isymp->n_numaux,
8b956130 2075 outsym);
dc810e39
AM
2076 pos = obj_sym_filepos (output_bfd);
2077 pos += finfo->last_bf_index * osymesz;
2078 if (bfd_seek (output_bfd, pos, SEEK_SET) != 0
2079 || (bfd_bwrite (outsym, osymesz, output_bfd)
2080 != osymesz))
b34976b6 2081 return FALSE;
252b5132
RH
2082 }
2083 }
2084
2085 if (auxp->x_sym.x_fcnary.x_fcn.x_endndx.l != 0)
2086 finfo->last_bf_index = -1;
2087 else
2088 {
2089 /* The endndx field of this aux entry must
2090 be updated with the symbol number of the
2091 next .bf symbol. */
2092 finfo->last_bf = *auxp;
2093 finfo->last_bf_index = (((outsym - finfo->outsyms)
2094 / osymesz)
2095 + syment_base);
2096 }
2097 }
2098 }
2099
2100 if (h == NULL)
2101 {
8b956130 2102 bfd_coff_swap_aux_out (output_bfd, auxp, isymp->n_type,
252b5132 2103 isymp->n_sclass, i, isymp->n_numaux,
8b956130 2104 outsym);
252b5132
RH
2105 outsym += osymesz;
2106 }
2107
2108 esym += isymesz;
2109 }
2110 }
2111
2112 indexp += add;
2113 isymp += add;
2114 sym_hash += add;
2115 }
2116
2117 /* Relocate the line numbers, unless we are stripping them. */
2118 if (finfo->info->strip == strip_none
2119 || finfo->info->strip == strip_some)
2120 {
2121 for (o = input_bfd->sections; o != NULL; o = o->next)
2122 {
2123 bfd_vma offset;
2124 bfd_byte *eline;
2125 bfd_byte *elineend;
b545f675 2126 bfd_byte *oeline;
b34976b6 2127 bfd_boolean skipping;
dc810e39
AM
2128 file_ptr pos;
2129 bfd_size_type amt;
252b5132
RH
2130
2131 /* FIXME: If SEC_HAS_CONTENTS is not for the section, then
2132 build_link_order in ldwrite.c will not have created a
2133 link order, which means that we will not have seen this
2134 input section in _bfd_coff_final_link, which means that
2135 we will not have allocated space for the line numbers of
2136 this section. I don't think line numbers can be
2137 meaningful for a section which does not have
2138 SEC_HAS_CONTENTS set, but, if they do, this must be
2139 changed. */
2140 if (o->lineno_count == 0
2141 || (o->output_section->flags & SEC_HAS_CONTENTS) == 0)
2142 continue;
2143
2144 if (bfd_seek (input_bfd, o->line_filepos, SEEK_SET) != 0
dc810e39 2145 || bfd_bread (finfo->linenos, linesz * o->lineno_count,
252b5132 2146 input_bfd) != linesz * o->lineno_count)
b34976b6 2147 return FALSE;
252b5132
RH
2148
2149 offset = o->output_section->vma + o->output_offset - o->vma;
2150 eline = finfo->linenos;
b545f675 2151 oeline = finfo->linenos;
252b5132 2152 elineend = eline + linesz * o->lineno_count;
b34976b6 2153 skipping = FALSE;
252b5132
RH
2154 for (; eline < elineend; eline += linesz)
2155 {
2156 struct internal_lineno iline;
2157
8b956130 2158 bfd_coff_swap_lineno_in (input_bfd, eline, &iline);
252b5132
RH
2159
2160 if (iline.l_lnno != 0)
2161 iline.l_addr.l_paddr += offset;
2162 else if (iline.l_addr.l_symndx >= 0
2163 && ((unsigned long) iline.l_addr.l_symndx
2164 < obj_raw_syment_count (input_bfd)))
2165 {
2166 long indx;
2167
2168 indx = finfo->sym_indices[iline.l_addr.l_symndx];
2169
2170 if (indx < 0)
2171 {
2172 /* These line numbers are attached to a symbol
b545f675
ILT
2173 which we are stripping. We must discard the
2174 line numbers because reading them back with
2175 no associated symbol (or associating them all
2176 with symbol #0) will fail. We can't regain
2177 the space in the output file, but at least
2178 they're dense. */
b34976b6 2179 skipping = TRUE;
252b5132
RH
2180 }
2181 else
2182 {
2183 struct internal_syment is;
2184 union internal_auxent ia;
2185
2186 /* Fix up the lnnoptr field in the aux entry of
2187 the symbol. It turns out that we can't do
2188 this when we modify the symbol aux entries,
2189 because gas sometimes screws up the lnnoptr
2190 field and makes it an offset from the start
2191 of the line numbers rather than an absolute
2192 file index. */
2193 bfd_coff_swap_sym_in (output_bfd,
8b956130
NC
2194 (finfo->outsyms
2195 + ((indx - syment_base)
2196 * osymesz)), &is);
252b5132
RH
2197 if ((ISFCN (is.n_type)
2198 || is.n_sclass == C_BLOCK)
2199 && is.n_numaux >= 1)
2200 {
8b956130 2201 void *auxptr;
252b5132 2202
8b956130
NC
2203 auxptr = (finfo->outsyms
2204 + ((indx - syment_base + 1)
2205 * osymesz));
252b5132
RH
2206 bfd_coff_swap_aux_in (output_bfd, auxptr,
2207 is.n_type, is.n_sclass,
8b956130 2208 0, is.n_numaux, &ia);
252b5132
RH
2209 ia.x_sym.x_fcnary.x_fcn.x_lnnoptr =
2210 (o->output_section->line_filepos
2211 + o->output_section->lineno_count * linesz
2212 + eline - finfo->linenos);
8b956130 2213 bfd_coff_swap_aux_out (output_bfd, &ia,
252b5132
RH
2214 is.n_type, is.n_sclass, 0,
2215 is.n_numaux, auxptr);
2216 }
b545f675 2217
b34976b6 2218 skipping = FALSE;
252b5132
RH
2219 }
2220
2221 iline.l_addr.l_symndx = indx;
2222 }
2223
b545f675
ILT
2224 if (!skipping)
2225 {
8b956130 2226 bfd_coff_swap_lineno_out (output_bfd, &iline, oeline);
b545f675
ILT
2227 oeline += linesz;
2228 }
252b5132
RH
2229 }
2230
dc810e39
AM
2231 pos = o->output_section->line_filepos;
2232 pos += o->output_section->lineno_count * linesz;
2233 amt = oeline - finfo->linenos;
2234 if (bfd_seek (output_bfd, pos, SEEK_SET) != 0
2235 || bfd_bwrite (finfo->linenos, amt, output_bfd) != amt)
b34976b6 2236 return FALSE;
252b5132 2237
dc810e39 2238 o->output_section->lineno_count += amt / linesz;
252b5132
RH
2239 }
2240 }
2241
2242 /* If we swapped out a C_FILE symbol, guess that the next C_FILE
2243 symbol will be the first symbol in the next input file. In the
2244 normal case, this will save us from writing out the C_FILE symbol
2245 again. */
2246 if (finfo->last_file_index != -1
2247 && (bfd_size_type) finfo->last_file_index >= syment_base)
2248 {
2249 finfo->last_file.n_value = output_index;
8b956130
NC
2250 bfd_coff_swap_sym_out (output_bfd, &finfo->last_file,
2251 (finfo->outsyms
2252 + ((finfo->last_file_index - syment_base)
2253 * osymesz)));
252b5132
RH
2254 }
2255
2256 /* Write the modified symbols to the output file. */
2257 if (outsym > finfo->outsyms)
2258 {
dc810e39
AM
2259 file_ptr pos;
2260 bfd_size_type amt;
2261
2262 pos = obj_sym_filepos (output_bfd) + syment_base * osymesz;
2263 amt = outsym - finfo->outsyms;
2264 if (bfd_seek (output_bfd, pos, SEEK_SET) != 0
2265 || bfd_bwrite (finfo->outsyms, amt, output_bfd) != amt)
b34976b6 2266 return FALSE;
252b5132
RH
2267
2268 BFD_ASSERT ((obj_raw_syment_count (output_bfd)
2269 + (outsym - finfo->outsyms) / osymesz)
2270 == output_index);
2271
2272 obj_raw_syment_count (output_bfd) = output_index;
2273 }
2274
2275 /* Relocate the contents of each section. */
2276 adjust_symndx = coff_backend_info (input_bfd)->_bfd_coff_adjust_symndx;
2277 for (o = input_bfd->sections; o != NULL; o = o->next)
2278 {
2279 bfd_byte *contents;
2280 struct coff_section_tdata *secdata;
2281
2282 if (! o->linker_mark)
8b956130
NC
2283 /* This section was omitted from the link. */
2284 continue;
252b5132 2285
3722b82f
AM
2286 if ((o->flags & SEC_LINKER_CREATED) != 0)
2287 continue;
2288
252b5132 2289 if ((o->flags & SEC_HAS_CONTENTS) == 0
eea6121a 2290 || (o->size == 0 && (o->flags & SEC_RELOC) == 0))
252b5132
RH
2291 {
2292 if ((o->flags & SEC_RELOC) != 0
2293 && o->reloc_count != 0)
2294 {
d003868e
AM
2295 (*_bfd_error_handler)
2296 (_("%B: relocs in section `%A', but it has no contents"),
2297 input_bfd, o);
252b5132 2298 bfd_set_error (bfd_error_no_contents);
b34976b6 2299 return FALSE;
252b5132
RH
2300 }
2301
2302 continue;
2303 }
2304
2305 secdata = coff_section_data (input_bfd, o);
2306 if (secdata != NULL && secdata->contents != NULL)
2307 contents = secdata->contents;
2308 else
2309 {
eea6121a
AM
2310 bfd_size_type x = o->rawsize ? o->rawsize : o->size;
2311 if (! bfd_get_section_contents (input_bfd, o, finfo->contents, 0, x))
b34976b6 2312 return FALSE;
252b5132
RH
2313 contents = finfo->contents;
2314 }
2315
2316 if ((o->flags & SEC_RELOC) != 0)
2317 {
2318 int target_index;
2319 struct internal_reloc *internal_relocs;
2320 struct internal_reloc *irel;
2321
2322 /* Read in the relocs. */
2323 target_index = o->output_section->target_index;
2324 internal_relocs = (_bfd_coff_read_internal_relocs
b34976b6 2325 (input_bfd, o, FALSE, finfo->external_relocs,
1049f94e
AM
2326 finfo->info->relocatable,
2327 (finfo->info->relocatable
252b5132
RH
2328 ? (finfo->section_info[target_index].relocs
2329 + o->output_section->reloc_count)
2330 : finfo->internal_relocs)));
2331 if (internal_relocs == NULL)
b34976b6 2332 return FALSE;
252b5132
RH
2333
2334 /* Call processor specific code to relocate the section
2335 contents. */
2336 if (! bfd_coff_relocate_section (output_bfd, finfo->info,
2337 input_bfd, o,
2338 contents,
2339 internal_relocs,
2340 finfo->internal_syms,
2341 finfo->sec_ptrs))
b34976b6 2342 return FALSE;
252b5132 2343
1049f94e 2344 if (finfo->info->relocatable)
252b5132
RH
2345 {
2346 bfd_vma offset;
2347 struct internal_reloc *irelend;
2348 struct coff_link_hash_entry **rel_hash;
2349
2350 offset = o->output_section->vma + o->output_offset - o->vma;
2351 irel = internal_relocs;
2352 irelend = irel + o->reloc_count;
2353 rel_hash = (finfo->section_info[target_index].rel_hashes
2354 + o->output_section->reloc_count);
2355 for (; irel < irelend; irel++, rel_hash++)
2356 {
2357 struct coff_link_hash_entry *h;
b34976b6 2358 bfd_boolean adjusted;
252b5132
RH
2359
2360 *rel_hash = NULL;
2361
2362 /* Adjust the reloc address and symbol index. */
252b5132
RH
2363 irel->r_vaddr += offset;
2364
2365 if (irel->r_symndx == -1)
2366 continue;
2367
2368 if (adjust_symndx)
2369 {
2370 if (! (*adjust_symndx) (output_bfd, finfo->info,
2371 input_bfd, o, irel,
2372 &adjusted))
b34976b6 2373 return FALSE;
252b5132
RH
2374 if (adjusted)
2375 continue;
2376 }
2377
2378 h = obj_coff_sym_hashes (input_bfd)[irel->r_symndx];
2379 if (h != NULL)
2380 {
2381 /* This is a global symbol. */
2382 if (h->indx >= 0)
2383 irel->r_symndx = h->indx;
2384 else
2385 {
2386 /* This symbol is being written at the end
2387 of the file, and we do not yet know the
2388 symbol index. We save the pointer to the
2389 hash table entry in the rel_hash list.
2390 We set the indx field to -2 to indicate
2391 that this symbol must not be stripped. */
2392 *rel_hash = h;
2393 h->indx = -2;
2394 }
2395 }
2396 else
2397 {
2398 long indx;
2399
2400 indx = finfo->sym_indices[irel->r_symndx];
2401 if (indx != -1)
2402 irel->r_symndx = indx;
2403 else
2404 {
2405 struct internal_syment *is;
2406 const char *name;
2407 char buf[SYMNMLEN + 1];
2408
2409 /* This reloc is against a symbol we are
2410 stripping. This should have been handled
2411 by the 'dont_skip_symbol' code in the while
244148ad 2412 loop at the top of this function. */
252b5132
RH
2413 is = finfo->internal_syms + irel->r_symndx;
2414
2415 name = (_bfd_coff_internal_syment_name
2416 (input_bfd, is, buf));
2417 if (name == NULL)
b34976b6 2418 return FALSE;
252b5132
RH
2419
2420 if (! ((*finfo->info->callbacks->unattached_reloc)
2421 (finfo->info, name, input_bfd, o,
2422 irel->r_vaddr)))
b34976b6 2423 return FALSE;
252b5132
RH
2424 }
2425 }
2426 }
2427
2428 o->output_section->reloc_count += o->reloc_count;
2429 }
2430 }
2431
2432 /* Write out the modified section contents. */
2433 if (secdata == NULL || secdata->stab_info == NULL)
2434 {
dc810e39 2435 file_ptr loc = o->output_offset * bfd_octets_per_byte (output_bfd);
252b5132 2436 if (! bfd_set_section_contents (output_bfd, o->output_section,
eea6121a 2437 contents, loc, o->size))
b34976b6 2438 return FALSE;
252b5132
RH
2439 }
2440 else
2441 {
2442 if (! (_bfd_write_section_stabs
2443 (output_bfd, &coff_hash_table (finfo->info)->stab_info,
2444 o, &secdata->stab_info, contents)))
b34976b6 2445 return FALSE;
252b5132
RH
2446 }
2447 }
2448
8b956130
NC
2449 if (! finfo->info->keep_memory
2450 && ! _bfd_coff_free_symbols (input_bfd))
2451 return FALSE;
252b5132 2452
b34976b6 2453 return TRUE;
252b5132
RH
2454}
2455
2456/* Write out a global symbol. Called via coff_link_hash_traverse. */
2457
b34976b6 2458bfd_boolean
8b956130 2459_bfd_coff_write_global_sym (struct coff_link_hash_entry *h, void *data)
252b5132
RH
2460{
2461 struct coff_final_link_info *finfo = (struct coff_final_link_info *) data;
2462 bfd *output_bfd;
2463 struct internal_syment isym;
2464 bfd_size_type symesz;
2465 unsigned int i;
dc810e39 2466 file_ptr pos;
252b5132
RH
2467
2468 output_bfd = finfo->output_bfd;
2469
e92d460e
AM
2470 if (h->root.type == bfd_link_hash_warning)
2471 {
2472 h = (struct coff_link_hash_entry *) h->root.u.i.link;
2473 if (h->root.type == bfd_link_hash_new)
b34976b6 2474 return TRUE;
e92d460e
AM
2475 }
2476
252b5132 2477 if (h->indx >= 0)
b34976b6 2478 return TRUE;
252b5132
RH
2479
2480 if (h->indx != -2
2481 && (finfo->info->strip == strip_all
2482 || (finfo->info->strip == strip_some
2483 && (bfd_hash_lookup (finfo->info->keep_hash,
b34976b6 2484 h->root.root.string, FALSE, FALSE)
252b5132 2485 == NULL))))
b34976b6 2486 return TRUE;
252b5132
RH
2487
2488 switch (h->root.type)
2489 {
2490 default:
2491 case bfd_link_hash_new:
e92d460e 2492 case bfd_link_hash_warning:
252b5132 2493 abort ();
b34976b6 2494 return FALSE;
252b5132
RH
2495
2496 case bfd_link_hash_undefined:
2497 case bfd_link_hash_undefweak:
2498 isym.n_scnum = N_UNDEF;
2499 isym.n_value = 0;
2500 break;
2501
2502 case bfd_link_hash_defined:
2503 case bfd_link_hash_defweak:
2504 {
2505 asection *sec;
2506
2507 sec = h->root.u.def.section->output_section;
2508 if (bfd_is_abs_section (sec))
2509 isym.n_scnum = N_ABS;
2510 else
2511 isym.n_scnum = sec->target_index;
2512 isym.n_value = (h->root.u.def.value
2513 + h->root.u.def.section->output_offset);
2514 if (! obj_pe (finfo->output_bfd))
2515 isym.n_value += sec->vma;
2516 }
2517 break;
2518
2519 case bfd_link_hash_common:
2520 isym.n_scnum = N_UNDEF;
2521 isym.n_value = h->root.u.c.size;
2522 break;
2523
2524 case bfd_link_hash_indirect:
252b5132 2525 /* Just ignore these. They can't be handled anyhow. */
b34976b6 2526 return TRUE;
252b5132
RH
2527 }
2528
2529 if (strlen (h->root.root.string) <= SYMNMLEN)
2530 strncpy (isym._n._n_name, h->root.root.string, SYMNMLEN);
2531 else
2532 {
b34976b6 2533 bfd_boolean hash;
252b5132
RH
2534 bfd_size_type indx;
2535
b34976b6 2536 hash = TRUE;
252b5132 2537 if ((output_bfd->flags & BFD_TRADITIONAL_FORMAT) != 0)
b34976b6 2538 hash = FALSE;
252b5132 2539 indx = _bfd_stringtab_add (finfo->strtab, h->root.root.string, hash,
b34976b6 2540 FALSE);
252b5132
RH
2541 if (indx == (bfd_size_type) -1)
2542 {
b34976b6
AM
2543 finfo->failed = TRUE;
2544 return FALSE;
252b5132
RH
2545 }
2546 isym._n._n_n._n_zeroes = 0;
2547 isym._n._n_n._n_offset = STRING_SIZE_SIZE + indx;
2548 }
2549
2550 isym.n_sclass = h->class;
2551 isym.n_type = h->type;
2552
2553 if (isym.n_sclass == C_NULL)
2554 isym.n_sclass = C_EXT;
2555
2556 /* If doing task linking and this is the pass where we convert
2557 defined globals to statics, then do that conversion now. If the
2558 symbol is not being converted, just ignore it and it will be
e4202681 2559 output during a later pass. */
252b5132
RH
2560 if (finfo->global_to_static)
2561 {
e4202681 2562 if (! IS_EXTERNAL (output_bfd, isym))
b34976b6 2563 return TRUE;
e4202681 2564
252b5132
RH
2565 isym.n_sclass = C_STAT;
2566 }
2567
5c4491d3 2568 /* When a weak symbol is not overridden by a strong one,
e4202681 2569 turn it into an external symbol when not building a
1049f94e 2570 shared or relocatable object. */
e4202681 2571 if (! finfo->info->shared
1049f94e 2572 && ! finfo->info->relocatable
e4202681
NC
2573 && IS_WEAK_EXTERNAL (finfo->output_bfd, isym))
2574 isym.n_sclass = C_EXT;
2575
252b5132 2576 isym.n_numaux = h->numaux;
244148ad 2577
8b956130 2578 bfd_coff_swap_sym_out (output_bfd, &isym, finfo->outsyms);
252b5132
RH
2579
2580 symesz = bfd_coff_symesz (output_bfd);
2581
dc810e39
AM
2582 pos = obj_sym_filepos (output_bfd);
2583 pos += obj_raw_syment_count (output_bfd) * symesz;
2584 if (bfd_seek (output_bfd, pos, SEEK_SET) != 0
2585 || bfd_bwrite (finfo->outsyms, symesz, output_bfd) != symesz)
252b5132 2586 {
b34976b6
AM
2587 finfo->failed = TRUE;
2588 return FALSE;
252b5132
RH
2589 }
2590
2591 h->indx = obj_raw_syment_count (output_bfd);
2592
2593 ++obj_raw_syment_count (output_bfd);
2594
2c546cd8
ILT
2595 /* Write out any associated aux entries. Most of the aux entries
2596 will have been modified in _bfd_coff_link_input_bfd. We have to
2597 handle section aux entries here, now that we have the final
2598 relocation and line number counts. */
252b5132
RH
2599 for (i = 0; i < isym.n_numaux; i++)
2600 {
2c546cd8
ILT
2601 union internal_auxent *auxp;
2602
2603 auxp = h->aux + i;
2604
2605 /* Look for a section aux entry here using the same tests that
2606 coff_swap_aux_out uses. */
2607 if (i == 0
2608 && (isym.n_sclass == C_STAT
2609 || isym.n_sclass == C_HIDDEN)
2610 && isym.n_type == T_NULL
2611 && (h->root.type == bfd_link_hash_defined
2612 || h->root.type == bfd_link_hash_defweak))
2613 {
2614 asection *sec;
2615
2616 sec = h->root.u.def.section->output_section;
2617 if (sec != NULL)
2618 {
eea6121a 2619 auxp->x_scn.x_scnlen = sec->size;
2c546cd8
ILT
2620
2621 /* For PE, an overflow on the final link reportedly does
2622 not matter. FIXME: Why not? */
2c546cd8
ILT
2623 if (sec->reloc_count > 0xffff
2624 && (! obj_pe (output_bfd)
1049f94e 2625 || finfo->info->relocatable))
2c546cd8
ILT
2626 (*_bfd_error_handler)
2627 (_("%s: %s: reloc overflow: 0x%lx > 0xffff"),
2628 bfd_get_filename (output_bfd),
2629 bfd_get_section_name (output_bfd, sec),
2630 sec->reloc_count);
2631
2632 if (sec->lineno_count > 0xffff
2633 && (! obj_pe (output_bfd)
1049f94e 2634 || finfo->info->relocatable))
2c546cd8
ILT
2635 (*_bfd_error_handler)
2636 (_("%s: warning: %s: line number overflow: 0x%lx > 0xffff"),
2637 bfd_get_filename (output_bfd),
2638 bfd_get_section_name (output_bfd, sec),
2639 sec->lineno_count);
2640
2641 auxp->x_scn.x_nreloc = sec->reloc_count;
2642 auxp->x_scn.x_nlinno = sec->lineno_count;
2643 auxp->x_scn.x_checksum = 0;
2644 auxp->x_scn.x_associated = 0;
2645 auxp->x_scn.x_comdat = 0;
2646 }
2647 }
2648
8b956130 2649 bfd_coff_swap_aux_out (output_bfd, auxp, isym.n_type,
dc810e39 2650 isym.n_sclass, (int) i, isym.n_numaux,
8b956130 2651 finfo->outsyms);
dc810e39 2652 if (bfd_bwrite (finfo->outsyms, symesz, output_bfd) != symesz)
252b5132 2653 {
b34976b6
AM
2654 finfo->failed = TRUE;
2655 return FALSE;
252b5132
RH
2656 }
2657 ++obj_raw_syment_count (output_bfd);
2658 }
2659
b34976b6 2660 return TRUE;
252b5132
RH
2661}
2662
2663/* Write out task global symbols, converting them to statics. Called
2664 via coff_link_hash_traverse. Calls bfd_coff_write_global_sym to do
244148ad 2665 the dirty work, if the symbol we are processing needs conversion. */
252b5132 2666
b34976b6 2667bfd_boolean
8b956130 2668_bfd_coff_write_task_globals (struct coff_link_hash_entry *h, void *data)
252b5132
RH
2669{
2670 struct coff_final_link_info *finfo = (struct coff_final_link_info *) data;
b34976b6
AM
2671 bfd_boolean rtnval = TRUE;
2672 bfd_boolean save_global_to_static;
252b5132 2673
e92d460e
AM
2674 if (h->root.type == bfd_link_hash_warning)
2675 h = (struct coff_link_hash_entry *) h->root.u.i.link;
2676
252b5132
RH
2677 if (h->indx < 0)
2678 {
2679 switch (h->root.type)
2680 {
2681 case bfd_link_hash_defined:
2682 case bfd_link_hash_defweak:
2683 save_global_to_static = finfo->global_to_static;
b34976b6 2684 finfo->global_to_static = TRUE;
252b5132
RH
2685 rtnval = _bfd_coff_write_global_sym (h, data);
2686 finfo->global_to_static = save_global_to_static;
2687 break;
2688 default:
2689 break;
2690 }
2691 }
2692 return (rtnval);
2693}
2694
2695/* Handle a link order which is supposed to generate a reloc. */
2696
b34976b6 2697bfd_boolean
8b956130
NC
2698_bfd_coff_reloc_link_order (bfd *output_bfd,
2699 struct coff_final_link_info *finfo,
2700 asection *output_section,
2701 struct bfd_link_order *link_order)
252b5132
RH
2702{
2703 reloc_howto_type *howto;
2704 struct internal_reloc *irel;
2705 struct coff_link_hash_entry **rel_hash_ptr;
2706
2707 howto = bfd_reloc_type_lookup (output_bfd, link_order->u.reloc.p->reloc);
2708 if (howto == NULL)
2709 {
2710 bfd_set_error (bfd_error_bad_value);
b34976b6 2711 return FALSE;
252b5132
RH
2712 }
2713
2714 if (link_order->u.reloc.p->addend != 0)
2715 {
2716 bfd_size_type size;
2717 bfd_byte *buf;
2718 bfd_reloc_status_type rstat;
b34976b6 2719 bfd_boolean ok;
dc810e39 2720 file_ptr loc;
252b5132
RH
2721
2722 size = bfd_get_reloc_size (howto);
8b956130 2723 buf = bfd_zmalloc (size);
252b5132 2724 if (buf == NULL)
b34976b6 2725 return FALSE;
252b5132
RH
2726
2727 rstat = _bfd_relocate_contents (howto, output_bfd,
dc810e39
AM
2728 (bfd_vma) link_order->u.reloc.p->addend,\
2729 buf);
252b5132
RH
2730 switch (rstat)
2731 {
2732 case bfd_reloc_ok:
2733 break;
2734 default:
2735 case bfd_reloc_outofrange:
2736 abort ();
2737 case bfd_reloc_overflow:
2738 if (! ((*finfo->info->callbacks->reloc_overflow)
dfeffb9f 2739 (finfo->info, NULL,
252b5132
RH
2740 (link_order->type == bfd_section_reloc_link_order
2741 ? bfd_section_name (output_bfd,
2742 link_order->u.reloc.p->u.section)
2743 : link_order->u.reloc.p->u.name),
2744 howto->name, link_order->u.reloc.p->addend,
2745 (bfd *) NULL, (asection *) NULL, (bfd_vma) 0)))
2746 {
2747 free (buf);
b34976b6 2748 return FALSE;
252b5132
RH
2749 }
2750 break;
2751 }
dc810e39 2752 loc = link_order->offset * bfd_octets_per_byte (output_bfd);
8b956130 2753 ok = bfd_set_section_contents (output_bfd, output_section, buf,
dc810e39 2754 loc, size);
252b5132
RH
2755 free (buf);
2756 if (! ok)
b34976b6 2757 return FALSE;
252b5132
RH
2758 }
2759
2760 /* Store the reloc information in the right place. It will get
2761 swapped and written out at the end of the final_link routine. */
252b5132
RH
2762 irel = (finfo->section_info[output_section->target_index].relocs
2763 + output_section->reloc_count);
2764 rel_hash_ptr = (finfo->section_info[output_section->target_index].rel_hashes
2765 + output_section->reloc_count);
2766
2767 memset (irel, 0, sizeof (struct internal_reloc));
2768 *rel_hash_ptr = NULL;
2769
2770 irel->r_vaddr = output_section->vma + link_order->offset;
2771
2772 if (link_order->type == bfd_section_reloc_link_order)
2773 {
2774 /* We need to somehow locate a symbol in the right section. The
2775 symbol must either have a value of zero, or we must adjust
2776 the addend by the value of the symbol. FIXME: Write this
2777 when we need it. The old linker couldn't handle this anyhow. */
2778 abort ();
2779 *rel_hash_ptr = NULL;
2780 irel->r_symndx = 0;
2781 }
2782 else
2783 {
2784 struct coff_link_hash_entry *h;
2785
2786 h = ((struct coff_link_hash_entry *)
2787 bfd_wrapped_link_hash_lookup (output_bfd, finfo->info,
2788 link_order->u.reloc.p->u.name,
b34976b6 2789 FALSE, FALSE, TRUE));
252b5132
RH
2790 if (h != NULL)
2791 {
2792 if (h->indx >= 0)
2793 irel->r_symndx = h->indx;
2794 else
2795 {
2796 /* Set the index to -2 to force this symbol to get
2797 written out. */
2798 h->indx = -2;
2799 *rel_hash_ptr = h;
2800 irel->r_symndx = 0;
2801 }
2802 }
2803 else
2804 {
2805 if (! ((*finfo->info->callbacks->unattached_reloc)
2806 (finfo->info, link_order->u.reloc.p->u.name, (bfd *) NULL,
2807 (asection *) NULL, (bfd_vma) 0)))
b34976b6 2808 return FALSE;
252b5132
RH
2809 irel->r_symndx = 0;
2810 }
2811 }
2812
2813 /* FIXME: Is this always right? */
2814 irel->r_type = howto->type;
2815
2816 /* r_size is only used on the RS/6000, which needs its own linker
2817 routines anyhow. r_extern is only used for ECOFF. */
2818
2819 /* FIXME: What is the right value for r_offset? Is zero OK? */
252b5132
RH
2820 ++output_section->reloc_count;
2821
b34976b6 2822 return TRUE;
252b5132
RH
2823}
2824
2825/* A basic reloc handling routine which may be used by processors with
2826 simple relocs. */
2827
b34976b6 2828bfd_boolean
8b956130
NC
2829_bfd_coff_generic_relocate_section (bfd *output_bfd,
2830 struct bfd_link_info *info,
2831 bfd *input_bfd,
2832 asection *input_section,
2833 bfd_byte *contents,
2834 struct internal_reloc *relocs,
2835 struct internal_syment *syms,
2836 asection **sections)
252b5132
RH
2837{
2838 struct internal_reloc *rel;
2839 struct internal_reloc *relend;
2840
2841 rel = relocs;
2842 relend = rel + input_section->reloc_count;
2843 for (; rel < relend; rel++)
2844 {
2845 long symndx;
2846 struct coff_link_hash_entry *h;
2847 struct internal_syment *sym;
2848 bfd_vma addend;
2849 bfd_vma val;
2850 reloc_howto_type *howto;
2851 bfd_reloc_status_type rstat;
2852
2853 symndx = rel->r_symndx;
2854
2855 if (symndx == -1)
2856 {
2857 h = NULL;
2858 sym = NULL;
2859 }
75987f83
ILT
2860 else if (symndx < 0
2861 || (unsigned long) symndx >= obj_raw_syment_count (input_bfd))
2862 {
2863 (*_bfd_error_handler)
d003868e 2864 ("%B: illegal symbol index %ld in relocs", input_bfd, symndx);
b34976b6 2865 return FALSE;
75987f83 2866 }
252b5132 2867 else
244148ad 2868 {
252b5132
RH
2869 h = obj_coff_sym_hashes (input_bfd)[symndx];
2870 sym = syms + symndx;
2871 }
2872
2873 /* COFF treats common symbols in one of two ways. Either the
2874 size of the symbol is included in the section contents, or it
2875 is not. We assume that the size is not included, and force
2876 the rtype_to_howto function to adjust the addend as needed. */
252b5132
RH
2877 if (sym != NULL && sym->n_scnum != 0)
2878 addend = - sym->n_value;
2879 else
2880 addend = 0;
2881
252b5132
RH
2882 howto = bfd_coff_rtype_to_howto (input_bfd, input_section, rel, h,
2883 sym, &addend);
2884 if (howto == NULL)
b34976b6 2885 return FALSE;
252b5132 2886
1049f94e 2887 /* If we are doing a relocatable link, then we can just ignore
252b5132 2888 a PC relative reloc that is pcrel_offset. It will already
1049f94e 2889 have the correct value. If this is not a relocatable link,
252b5132
RH
2890 then we should ignore the symbol value. */
2891 if (howto->pc_relative && howto->pcrel_offset)
2892 {
1049f94e 2893 if (info->relocatable)
252b5132
RH
2894 continue;
2895 if (sym != NULL && sym->n_scnum != 0)
2896 addend += sym->n_value;
2897 }
2898
2899 val = 0;
2900
2901 if (h == NULL)
2902 {
2903 asection *sec;
2904
2905 if (symndx == -1)
2906 {
2907 sec = bfd_abs_section_ptr;
2908 val = 0;
2909 }
2910 else
2911 {
2912 sec = sections[symndx];
2913 val = (sec->output_section->vma
2914 + sec->output_offset
2915 + sym->n_value);
2916 if (! obj_pe (input_bfd))
2917 val -= sec->vma;
2918 }
2919 }
2920 else
2921 {
2922 if (h->root.type == bfd_link_hash_defined
2923 || h->root.type == bfd_link_hash_defweak)
2924 {
c87db184 2925 /* Defined weak symbols are a GNU extension. */
252b5132
RH
2926 asection *sec;
2927
2928 sec = h->root.u.def.section;
2929 val = (h->root.u.def.value
2930 + sec->output_section->vma
2931 + sec->output_offset);
c87db184 2932 }
252b5132 2933
bc7a577d 2934 else if (h->root.type == bfd_link_hash_undefweak)
c87db184
CF
2935 {
2936 if (h->class == C_NT_WEAK && h->numaux == 1)
2937 {
2938 /* See _Microsoft Portable Executable and Common Object
0c429e07
NC
2939 File Format Specification_, section 5.5.3.
2940 Note that weak symbols without aux records are a GNU
2941 extension.
2942 FIXME: All weak externals are treated as having
27198fa9
DS
2943 characteristic IMAGE_WEAK_EXTERN_SEARCH_NOLIBRARY (1).
2944 These behave as per SVR4 ABI: A library member
2945 will resolve a weak external only if a normal
2946 external causes the library member to be linked.
2947 See also linker.c: generic_link_check_archive_element. */
c87db184
CF
2948 asection *sec;
2949 struct coff_link_hash_entry *h2 =
2950 input_bfd->tdata.coff_obj_data->sym_hashes[
2951 h->aux->x_sym.x_tagndx.l];
2952
0c429e07
NC
2953 if (!h2 || h2->root.type == bfd_link_hash_undefined)
2954 {
2955 sec = bfd_abs_section_ptr;
2956 val = 0;
2957 }
2958 else
2959 {
2960 sec = h2->root.u.def.section;
2961 val = h2->root.u.def.value
2962 + sec->output_section->vma + sec->output_offset;
2963 }
c87db184
CF
2964 }
2965 else
0c429e07 2966 /* This is a GNU extension. */
c87db184
CF
2967 val = 0;
2968 }
bc7a577d 2969
1049f94e 2970 else if (! info->relocatable)
252b5132
RH
2971 {
2972 if (! ((*info->callbacks->undefined_symbol)
2973 (info, h->root.root.string, input_bfd, input_section,
b34976b6
AM
2974 rel->r_vaddr - input_section->vma, TRUE)))
2975 return FALSE;
252b5132
RH
2976 }
2977 }
2978
2979 if (info->base_file)
2980 {
244148ad 2981 /* Emit a reloc if the backend thinks it needs it. */
252b5132
RH
2982 if (sym && pe_data (output_bfd)->in_reloc_p (output_bfd, howto))
2983 {
2984 /* Relocation to a symbol in a section which isn't
2985 absolute. We output the address here to a file.
2986 This file is then read by dlltool when generating the
2987 reloc section. Note that the base file is not
d078078d
KT
2988 portable between systems. We write out a bfd_vma here,
2989 and dlltool reads in a bfd_vma. */
2990 bfd_vma addr = (rel->r_vaddr
244148ad
KH
2991 - input_section->vma
2992 + input_section->output_offset
252b5132
RH
2993 + input_section->output_section->vma);
2994 if (coff_data (output_bfd)->pe)
2995 addr -= pe_data(output_bfd)->pe_opthdr.ImageBase;
d078078d
KT
2996 if (fwrite (&addr, 1, sizeof (bfd_vma), (FILE *) info->base_file)
2997 != sizeof (bfd_vma))
252b5132
RH
2998 {
2999 bfd_set_error (bfd_error_system_call);
b34976b6 3000 return FALSE;
252b5132
RH
3001 }
3002 }
3003 }
244148ad 3004
252b5132
RH
3005 rstat = _bfd_final_link_relocate (howto, input_bfd, input_section,
3006 contents,
3007 rel->r_vaddr - input_section->vma,
3008 val, addend);
3009
3010 switch (rstat)
3011 {
3012 default:
3013 abort ();
3014 case bfd_reloc_ok:
3015 break;
3016 case bfd_reloc_outofrange:
3017 (*_bfd_error_handler)
d003868e
AM
3018 (_("%B: bad reloc address 0x%lx in section `%A'"),
3019 input_bfd, input_section, (unsigned long) rel->r_vaddr);
b34976b6 3020 return FALSE;
252b5132
RH
3021 case bfd_reloc_overflow:
3022 {
3023 const char *name;
3024 char buf[SYMNMLEN + 1];
3025
3026 if (symndx == -1)
3027 name = "*ABS*";
3028 else if (h != NULL)
dfeffb9f 3029 name = NULL;
252b5132
RH
3030 else
3031 {
3032 name = _bfd_coff_internal_syment_name (input_bfd, sym, buf);
3033 if (name == NULL)
b34976b6 3034 return FALSE;
252b5132
RH
3035 }
3036
3037 if (! ((*info->callbacks->reloc_overflow)
dfeffb9f
L
3038 (info, (h ? &h->root : NULL), name, howto->name,
3039 (bfd_vma) 0, input_bfd, input_section,
3040 rel->r_vaddr - input_section->vma)))
b34976b6 3041 return FALSE;
252b5132
RH
3042 }
3043 }
3044 }
b34976b6 3045 return TRUE;
252b5132 3046}
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