1 /* COFF specific linker code.
2 Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
3 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
4 Written by Ian Lance Taylor, Cygnus Support.
6 This file is part of BFD, the Binary File Descriptor library.
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
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
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.
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
20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
21 MA 02110-1301, USA. */
23 /* This file contains the COFF backend linker code. */
29 #include "coff/internal.h"
31 #include "safe-ctype.h"
33 static bfd_boolean coff_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info);
34 static bfd_boolean coff_link_check_archive_element (bfd *abfd, struct bfd_link_info *info, bfd_boolean *pneeded);
35 static bfd_boolean coff_link_add_symbols (bfd *abfd, struct bfd_link_info *info);
37 /* Return TRUE if SYM is a weak, external symbol. */
38 #define IS_WEAK_EXTERNAL(abfd, sym) \
39 ((sym).n_sclass == C_WEAKEXT \
40 || (obj_pe (abfd) && (sym).n_sclass == C_NT_WEAK))
42 /* Return TRUE if SYM is an external symbol. */
43 #define IS_EXTERNAL(abfd, sym) \
44 ((sym).n_sclass == C_EXT || IS_WEAK_EXTERNAL (abfd, sym))
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. */
52 #define N_TMASK n_tmask
53 #define N_BTSHFT n_btshft
54 #define N_BTMASK n_btmask
56 /* Create an entry in a COFF linker hash table. */
58 struct bfd_hash_entry *
59 _bfd_coff_link_hash_newfunc (struct bfd_hash_entry *entry,
60 struct bfd_hash_table *table,
63 struct coff_link_hash_entry *ret = (struct coff_link_hash_entry *) entry;
65 /* Allocate the structure if it has not already been allocated by a
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;
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,
77 if (ret != (struct coff_link_hash_entry *) NULL)
79 /* Set local fields. */
88 return (struct bfd_hash_entry *) ret;
91 /* Initialize a COFF linker hash table. */
94 _bfd_coff_link_hash_table_init (struct coff_link_hash_table *table,
96 struct bfd_hash_entry *(*newfunc) (struct bfd_hash_entry *,
97 struct bfd_hash_table *,
101 memset (&table->stab_info, 0, sizeof (table->stab_info));
102 return _bfd_link_hash_table_init (&table->root, abfd, newfunc, entsize);
105 /* Create a COFF linker hash table. */
107 struct bfd_link_hash_table *
108 _bfd_coff_link_hash_table_create (bfd *abfd)
110 struct coff_link_hash_table *ret;
111 bfd_size_type amt = sizeof (struct coff_link_hash_table);
113 ret = bfd_malloc (amt);
117 if (! _bfd_coff_link_hash_table_init (ret, abfd,
118 _bfd_coff_link_hash_newfunc,
119 sizeof (struct coff_link_hash_entry)))
122 return (struct bfd_link_hash_table *) NULL;
127 /* Create an entry in a COFF debug merge hash table. */
129 struct bfd_hash_entry *
130 _bfd_coff_debug_merge_hash_newfunc (struct bfd_hash_entry *entry,
131 struct bfd_hash_table *table,
134 struct coff_debug_merge_hash_entry *ret =
135 (struct coff_debug_merge_hash_entry *) entry;
137 /* Allocate the structure if it has not already been allocated by a
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;
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)
151 /* Set local fields. */
155 return (struct bfd_hash_entry *) ret;
158 /* Given a COFF BFD, add symbols to the global hash table as
162 _bfd_coff_link_add_symbols (bfd *abfd, struct bfd_link_info *info)
164 switch (bfd_get_format (abfd))
167 return coff_link_add_object_symbols (abfd, info);
169 return _bfd_generic_link_add_archive_symbols
170 (abfd, info, coff_link_check_archive_element);
172 bfd_set_error (bfd_error_wrong_format);
177 /* Add symbols from a COFF object file. */
180 coff_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info)
182 if (! _bfd_coff_get_external_symbols (abfd))
184 if (! coff_link_add_symbols (abfd, info))
187 if (! info->keep_memory
188 && ! _bfd_coff_free_symbols (abfd))
194 /* Look through the symbols to see if this object file should be
195 included in the link. */
198 coff_link_check_ar_symbols (bfd *abfd,
199 struct bfd_link_info *info,
200 bfd_boolean *pneeded)
202 bfd_size_type symesz;
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)
213 struct internal_syment sym;
214 enum coff_symbol_classification classification;
216 bfd_coff_swap_sym_in (abfd, esym, &sym);
218 classification = bfd_coff_classify_symbol (abfd, &sym);
219 if (classification == COFF_SYMBOL_GLOBAL
220 || classification == COFF_SYMBOL_COMMON)
223 char buf[SYMNMLEN + 1];
224 struct bfd_link_hash_entry *h;
226 /* This symbol is externally visible, and is defined by this
228 name = _bfd_coff_internal_syment_name (abfd, &sym, buf);
231 h = bfd_link_hash_lookup (info->hash, name, FALSE, FALSE, TRUE);
235 && info->pei386_auto_import
236 && CONST_STRNEQ (name, "__imp_"))
237 h = bfd_link_hash_lookup (info->hash, name + 6, FALSE, FALSE, TRUE);
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
243 if (h != (struct bfd_link_hash_entry *) NULL
244 && h->type == bfd_link_hash_undefined)
246 if (! (*info->callbacks->add_archive_element) (info, abfd, name))
253 esym += (sym.n_numaux + 1) * symesz;
256 /* We do not need this object file. */
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. */
266 coff_link_check_archive_element (bfd *abfd,
267 struct bfd_link_info *info,
268 bfd_boolean *pneeded)
270 if (! _bfd_coff_get_external_symbols (abfd))
273 if (! coff_link_check_ar_symbols (abfd, info, pneeded))
277 && ! coff_link_add_symbols (abfd, info))
280 if ((! info->keep_memory || ! *pneeded)
281 && ! _bfd_coff_free_symbols (abfd))
287 /* Add all the symbols from an object file to the hash table. */
290 coff_link_add_symbols (bfd *abfd,
291 struct bfd_link_info *info)
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;
296 bfd_boolean keep_syms;
297 bfd_boolean default_copy;
298 bfd_size_type symcount;
299 struct coff_link_hash_entry **sym_hash;
300 bfd_size_type symesz;
305 /* Keep the symbols during this function, in case the linker needs
306 to read the generic symbols in order to report an error message. */
307 keep_syms = obj_coff_keep_syms (abfd);
308 obj_coff_keep_syms (abfd) = TRUE;
310 if (info->keep_memory)
311 default_copy = FALSE;
315 symcount = obj_raw_syment_count (abfd);
317 /* We keep a list of the linker hash table entries that correspond
318 to particular symbols. */
319 amt = symcount * sizeof (struct coff_link_hash_entry *);
320 sym_hash = bfd_zalloc (abfd, amt);
321 if (sym_hash == NULL && symcount != 0)
323 obj_coff_sym_hashes (abfd) = sym_hash;
325 symesz = bfd_coff_symesz (abfd);
326 BFD_ASSERT (symesz == bfd_coff_auxesz (abfd));
327 esym = (bfd_byte *) obj_coff_external_syms (abfd);
328 esym_end = esym + symcount * symesz;
329 while (esym < esym_end)
331 struct internal_syment sym;
332 enum coff_symbol_classification classification;
335 bfd_coff_swap_sym_in (abfd, esym, &sym);
337 classification = bfd_coff_classify_symbol (abfd, &sym);
338 if (classification != COFF_SYMBOL_LOCAL)
341 char buf[SYMNMLEN + 1];
347 /* This symbol is externally visible. */
349 name = _bfd_coff_internal_syment_name (abfd, &sym, buf);
353 /* We must copy the name into memory if we got it from the
354 syment itself, rather than the string table. */
356 if (sym._n._n_n._n_zeroes != 0
357 || sym._n._n_n._n_offset == 0)
362 switch (classification)
367 case COFF_SYMBOL_GLOBAL:
368 flags = BSF_EXPORT | BSF_GLOBAL;
369 section = coff_section_from_bfd_index (abfd, sym.n_scnum);
371 value -= section->vma;
374 case COFF_SYMBOL_UNDEFINED:
376 section = bfd_und_section_ptr;
379 case COFF_SYMBOL_COMMON:
381 section = bfd_com_section_ptr;
384 case COFF_SYMBOL_PE_SECTION:
385 flags = BSF_SECTION_SYM | BSF_GLOBAL;
386 section = coff_section_from_bfd_index (abfd, sym.n_scnum);
390 if (IS_WEAK_EXTERNAL (abfd, sym))
395 /* In the PE format, section symbols actually refer to the
396 start of the output section. We handle them specially
398 if (obj_pe (abfd) && (flags & BSF_SECTION_SYM) != 0)
400 *sym_hash = coff_link_hash_lookup (coff_hash_table (info),
401 name, FALSE, copy, FALSE);
402 if (*sym_hash != NULL)
404 if (((*sym_hash)->coff_link_hash_flags
405 & COFF_LINK_HASH_PE_SECTION_SYMBOL) == 0
406 && (*sym_hash)->root.type != bfd_link_hash_undefined
407 && (*sym_hash)->root.type != bfd_link_hash_undefweak)
408 (*_bfd_error_handler)
409 ("Warning: symbol `%s' is both section and non-section",
416 /* The Microsoft Visual C compiler does string pooling by
417 hashing the constants to an internal symbol name, and
418 relying on the linker comdat support to discard
419 duplicate names. However, if one string is a literal and
420 one is a data initializer, one will end up in the .data
421 section and one will end up in the .rdata section. The
422 Microsoft linker will combine them into the .data
423 section, which seems to be wrong since it might cause the
426 As long as there are no external references to the
427 symbols, which there shouldn't be, we can treat the .data
428 and .rdata instances as separate symbols. The comdat
429 code in the linker will do the appropriate merging. Here
430 we avoid getting a multiple definition error for one of
431 these special symbols.
433 FIXME: I don't think this will work in the case where
434 there are two object files which use the constants as a
435 literal and two object files which use it as a data
436 initializer. One or the other of the second object files
437 is going to wind up with an inappropriate reference. */
439 && (classification == COFF_SYMBOL_GLOBAL
440 || classification == COFF_SYMBOL_PE_SECTION)
441 && coff_section_data (abfd, section) != NULL
442 && coff_section_data (abfd, section)->comdat != NULL
443 && CONST_STRNEQ (name, "??_")
444 && strcmp (name, coff_section_data (abfd, section)->comdat->name) == 0)
446 if (*sym_hash == NULL)
447 *sym_hash = coff_link_hash_lookup (coff_hash_table (info),
448 name, FALSE, copy, FALSE);
449 if (*sym_hash != NULL
450 && (*sym_hash)->root.type == bfd_link_hash_defined
451 && coff_section_data (abfd, (*sym_hash)->root.u.def.section)->comdat != NULL
452 && strcmp (coff_section_data (abfd, (*sym_hash)->root.u.def.section)->comdat->name,
453 coff_section_data (abfd, section)->comdat->name) == 0)
459 if (! (bfd_coff_link_add_one_symbol
460 (info, abfd, name, flags, section, value,
461 (const char *) NULL, copy, FALSE,
462 (struct bfd_link_hash_entry **) sym_hash)))
466 if (obj_pe (abfd) && (flags & BSF_SECTION_SYM) != 0)
467 (*sym_hash)->coff_link_hash_flags |=
468 COFF_LINK_HASH_PE_SECTION_SYMBOL;
470 /* Limit the alignment of a common symbol to the possible
471 alignment of a section. There is no point to permitting
472 a higher alignment for a common symbol: we can not
473 guarantee it, and it may cause us to allocate extra space
474 in the common section. */
475 if (section == bfd_com_section_ptr
476 && (*sym_hash)->root.type == bfd_link_hash_common
477 && ((*sym_hash)->root.u.c.p->alignment_power
478 > bfd_coff_default_section_alignment_power (abfd)))
479 (*sym_hash)->root.u.c.p->alignment_power
480 = bfd_coff_default_section_alignment_power (abfd);
482 if (info->hash->creator->flavour == bfd_get_flavour (abfd))
484 /* If we don't have any symbol information currently in
485 the hash table, or if we are looking at a symbol
486 definition, then update the symbol class and type in
488 if (((*sym_hash)->class == C_NULL
489 && (*sym_hash)->type == T_NULL)
492 && (*sym_hash)->root.type != bfd_link_hash_defined
493 && (*sym_hash)->root.type != bfd_link_hash_defweak))
495 (*sym_hash)->class = sym.n_sclass;
496 if (sym.n_type != T_NULL)
498 /* We want to warn if the type changed, but not
499 if it changed from an unspecified type.
500 Testing the whole type byte may work, but the
501 change from (e.g.) a function of unspecified
502 type to function of known type also wants to
504 if ((*sym_hash)->type != T_NULL
505 && (*sym_hash)->type != sym.n_type
506 && !(DTYPE ((*sym_hash)->type) == DTYPE (sym.n_type)
507 && (BTYPE ((*sym_hash)->type) == T_NULL
508 || BTYPE (sym.n_type) == T_NULL)))
509 (*_bfd_error_handler)
510 (_("Warning: type of symbol `%s' changed from %d to %d in %B"),
511 abfd, name, (*sym_hash)->type, sym.n_type);
513 /* We don't want to change from a meaningful
514 base type to a null one, but if we know
515 nothing, take what little we might now know. */
516 if (BTYPE (sym.n_type) != T_NULL
517 || (*sym_hash)->type == T_NULL)
518 (*sym_hash)->type = sym.n_type;
520 (*sym_hash)->auxbfd = abfd;
521 if (sym.n_numaux != 0)
523 union internal_auxent *alloc;
526 union internal_auxent *iaux;
528 (*sym_hash)->numaux = sym.n_numaux;
529 alloc = ((union internal_auxent *)
530 bfd_hash_allocate (&info->hash->table,
532 * sizeof (*alloc))));
535 for (i = 0, eaux = esym + symesz, iaux = alloc;
537 i++, eaux += symesz, iaux++)
538 bfd_coff_swap_aux_in (abfd, eaux, sym.n_type,
539 sym.n_sclass, (int) i,
541 (*sym_hash)->aux = alloc;
546 if (classification == COFF_SYMBOL_PE_SECTION
547 && (*sym_hash)->numaux != 0)
549 /* Some PE sections (such as .bss) have a zero size in
550 the section header, but a non-zero size in the AUX
551 record. Correct that here.
553 FIXME: This is not at all the right place to do this.
554 For example, it won't help objdump. This needs to be
555 done when we swap in the section header. */
556 BFD_ASSERT ((*sym_hash)->numaux == 1);
557 if (section->size == 0)
558 section->size = (*sym_hash)->aux[0].x_scn.x_scnlen;
560 /* FIXME: We could test whether the section sizes
561 matches the size in the aux entry, but apparently
562 that sometimes fails unexpectedly. */
566 esym += (sym.n_numaux + 1) * symesz;
567 sym_hash += sym.n_numaux + 1;
570 /* If this is a non-traditional, non-relocatable link, try to
571 optimize the handling of any .stab/.stabstr sections. */
572 if (! info->relocatable
573 && ! info->traditional_format
574 && info->hash->creator->flavour == bfd_get_flavour (abfd)
575 && (info->strip != strip_all && info->strip != strip_debugger))
579 stabstr = bfd_get_section_by_name (abfd, ".stabstr");
583 bfd_size_type string_offset = 0;
586 for (stab = abfd->sections; stab; stab = stab->next)
587 if (CONST_STRNEQ (stab->name, ".stab")
589 || (stab->name[5] == '.' && ISDIGIT (stab->name[6]))))
591 struct coff_link_hash_table *table;
592 struct coff_section_tdata *secdata
593 = coff_section_data (abfd, stab);
597 amt = sizeof (struct coff_section_tdata);
598 stab->used_by_bfd = bfd_zalloc (abfd, amt);
599 if (stab->used_by_bfd == NULL)
601 secdata = coff_section_data (abfd, stab);
604 table = coff_hash_table (info);
606 if (! _bfd_link_section_stabs (abfd, &table->stab_info,
615 obj_coff_keep_syms (abfd) = keep_syms;
620 obj_coff_keep_syms (abfd) = keep_syms;
624 /* Do the final link step. */
627 _bfd_coff_final_link (bfd *abfd,
628 struct bfd_link_info *info)
630 bfd_size_type symesz;
631 struct coff_final_link_info finfo;
632 bfd_boolean debug_merge_allocated;
633 bfd_boolean long_section_names;
635 struct bfd_link_order *p;
636 bfd_size_type max_sym_count;
637 bfd_size_type max_lineno_count;
638 bfd_size_type max_reloc_count;
639 bfd_size_type max_output_reloc_count;
640 bfd_size_type max_contents_size;
641 file_ptr rel_filepos;
643 file_ptr line_filepos;
646 bfd_byte *external_relocs = NULL;
647 char strbuf[STRING_SIZE_SIZE];
650 symesz = bfd_coff_symesz (abfd);
653 finfo.output_bfd = abfd;
655 finfo.section_info = NULL;
656 finfo.last_file_index = -1;
657 finfo.last_bf_index = -1;
658 finfo.internal_syms = NULL;
659 finfo.sec_ptrs = NULL;
660 finfo.sym_indices = NULL;
661 finfo.outsyms = NULL;
662 finfo.linenos = NULL;
663 finfo.contents = NULL;
664 finfo.external_relocs = NULL;
665 finfo.internal_relocs = NULL;
666 finfo.global_to_static = FALSE;
667 debug_merge_allocated = FALSE;
669 coff_data (abfd)->link_info = info;
671 finfo.strtab = _bfd_stringtab_init ();
672 if (finfo.strtab == NULL)
675 if (! coff_debug_merge_hash_table_init (&finfo.debug_merge))
677 debug_merge_allocated = TRUE;
679 /* Compute the file positions for all the sections. */
680 if (! abfd->output_has_begun)
682 if (! bfd_coff_compute_section_file_positions (abfd))
686 /* Count the line numbers and relocation entries required for the
687 output file. Set the file positions for the relocs. */
688 rel_filepos = obj_relocbase (abfd);
689 relsz = bfd_coff_relsz (abfd);
690 max_contents_size = 0;
691 max_lineno_count = 0;
694 long_section_names = FALSE;
695 for (o = abfd->sections; o != NULL; o = o->next)
699 for (p = o->map_head.link_order; p != NULL; p = p->next)
701 if (p->type == bfd_indirect_link_order)
705 sec = p->u.indirect.section;
707 /* Mark all sections which are to be included in the
708 link. This will normally be every section. We need
709 to do this so that we can identify any sections which
710 the linker has decided to not include. */
711 sec->linker_mark = TRUE;
713 if (info->strip == strip_none
714 || info->strip == strip_some)
715 o->lineno_count += sec->lineno_count;
717 if (info->relocatable)
718 o->reloc_count += sec->reloc_count;
720 if (sec->rawsize > max_contents_size)
721 max_contents_size = sec->rawsize;
722 if (sec->size > max_contents_size)
723 max_contents_size = sec->size;
724 if (sec->lineno_count > max_lineno_count)
725 max_lineno_count = sec->lineno_count;
726 if (sec->reloc_count > max_reloc_count)
727 max_reloc_count = sec->reloc_count;
729 else if (info->relocatable
730 && (p->type == bfd_section_reloc_link_order
731 || p->type == bfd_symbol_reloc_link_order))
734 if (o->reloc_count == 0)
738 o->flags |= SEC_RELOC;
739 o->rel_filepos = rel_filepos;
740 rel_filepos += o->reloc_count * relsz;
741 /* In PE COFF, if there are at least 0xffff relocations an
742 extra relocation will be written out to encode the count. */
743 if (obj_pe (abfd) && o->reloc_count >= 0xffff)
744 rel_filepos += relsz;
747 if (bfd_coff_long_section_names (abfd)
748 && strlen (o->name) > SCNNMLEN)
750 /* This section has a long name which must go in the string
751 table. This must correspond to the code in
752 coff_write_object_contents which puts the string index
753 into the s_name field of the section header. That is why
754 we pass hash as FALSE. */
755 if (_bfd_stringtab_add (finfo.strtab, o->name, FALSE, FALSE)
756 == (bfd_size_type) -1)
758 long_section_names = TRUE;
762 /* If doing a relocatable link, allocate space for the pointers we
764 if (info->relocatable)
768 /* We use section_count + 1, rather than section_count, because
769 the target_index fields are 1 based. */
770 amt = abfd->section_count + 1;
771 amt *= sizeof (struct coff_link_section_info);
772 finfo.section_info = bfd_malloc (amt);
773 if (finfo.section_info == NULL)
775 for (i = 0; i <= abfd->section_count; i++)
777 finfo.section_info[i].relocs = NULL;
778 finfo.section_info[i].rel_hashes = NULL;
782 /* We now know the size of the relocs, so we can determine the file
783 positions of the line numbers. */
784 line_filepos = rel_filepos;
785 linesz = bfd_coff_linesz (abfd);
786 max_output_reloc_count = 0;
787 for (o = abfd->sections; o != NULL; o = o->next)
789 if (o->lineno_count == 0)
793 o->line_filepos = line_filepos;
794 line_filepos += o->lineno_count * linesz;
797 if (o->reloc_count != 0)
799 /* We don't know the indices of global symbols until we have
800 written out all the local symbols. For each section in
801 the output file, we keep an array of pointers to hash
802 table entries. Each entry in the array corresponds to a
803 reloc. When we find a reloc against a global symbol, we
804 set the corresponding entry in this array so that we can
805 fix up the symbol index after we have written out all the
808 Because of this problem, we also keep the relocs in
809 memory until the end of the link. This wastes memory,
810 but only when doing a relocatable link, which is not the
812 BFD_ASSERT (info->relocatable);
813 amt = o->reloc_count;
814 amt *= sizeof (struct internal_reloc);
815 finfo.section_info[o->target_index].relocs = bfd_malloc (amt);
816 amt = o->reloc_count;
817 amt *= sizeof (struct coff_link_hash_entry *);
818 finfo.section_info[o->target_index].rel_hashes = bfd_malloc (amt);
819 if (finfo.section_info[o->target_index].relocs == NULL
820 || finfo.section_info[o->target_index].rel_hashes == NULL)
823 if (o->reloc_count > max_output_reloc_count)
824 max_output_reloc_count = o->reloc_count;
827 /* Reset the reloc and lineno counts, so that we can use them to
828 count the number of entries we have output so far. */
833 obj_sym_filepos (abfd) = line_filepos;
835 /* Figure out the largest number of symbols in an input BFD. Take
836 the opportunity to clear the output_has_begun fields of all the
839 for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
843 sub->output_has_begun = FALSE;
844 sz = obj_raw_syment_count (sub);
845 if (sz > max_sym_count)
849 /* Allocate some buffers used while linking. */
850 amt = max_sym_count * sizeof (struct internal_syment);
851 finfo.internal_syms = bfd_malloc (amt);
852 amt = max_sym_count * sizeof (asection *);
853 finfo.sec_ptrs = bfd_malloc (amt);
854 amt = max_sym_count * sizeof (long);
855 finfo.sym_indices = bfd_malloc (amt);
856 finfo.outsyms = bfd_malloc ((max_sym_count + 1) * symesz);
857 amt = max_lineno_count * bfd_coff_linesz (abfd);
858 finfo.linenos = bfd_malloc (amt);
859 finfo.contents = bfd_malloc (max_contents_size);
860 amt = max_reloc_count * relsz;
861 finfo.external_relocs = bfd_malloc (amt);
862 if (! info->relocatable)
864 amt = max_reloc_count * sizeof (struct internal_reloc);
865 finfo.internal_relocs = bfd_malloc (amt);
867 if ((finfo.internal_syms == NULL && max_sym_count > 0)
868 || (finfo.sec_ptrs == NULL && max_sym_count > 0)
869 || (finfo.sym_indices == NULL && max_sym_count > 0)
870 || finfo.outsyms == NULL
871 || (finfo.linenos == NULL && max_lineno_count > 0)
872 || (finfo.contents == NULL && max_contents_size > 0)
873 || (finfo.external_relocs == NULL && max_reloc_count > 0)
874 || (! info->relocatable
875 && finfo.internal_relocs == NULL
876 && max_reloc_count > 0))
879 /* We now know the position of everything in the file, except that
880 we don't know the size of the symbol table and therefore we don't
881 know where the string table starts. We just build the string
882 table in memory as we go along. We process all the relocations
883 for a single input file at once. */
884 obj_raw_syment_count (abfd) = 0;
886 if (coff_backend_info (abfd)->_bfd_coff_start_final_link)
888 if (! bfd_coff_start_final_link (abfd, info))
892 for (o = abfd->sections; o != NULL; o = o->next)
894 for (p = o->map_head.link_order; p != NULL; p = p->next)
896 if (p->type == bfd_indirect_link_order
897 && bfd_family_coff (p->u.indirect.section->owner))
899 sub = p->u.indirect.section->owner;
900 if (! bfd_coff_link_output_has_begun (sub, & finfo))
902 if (! _bfd_coff_link_input_bfd (&finfo, sub))
904 sub->output_has_begun = TRUE;
907 else if (p->type == bfd_section_reloc_link_order
908 || p->type == bfd_symbol_reloc_link_order)
910 if (! _bfd_coff_reloc_link_order (abfd, &finfo, o, p))
915 if (! _bfd_default_link_order (abfd, info, o, p))
921 if (! bfd_coff_final_link_postscript (abfd, & finfo))
924 /* Free up the buffers used by _bfd_coff_link_input_bfd. */
926 coff_debug_merge_hash_table_free (&finfo.debug_merge);
927 debug_merge_allocated = FALSE;
929 if (finfo.internal_syms != NULL)
931 free (finfo.internal_syms);
932 finfo.internal_syms = NULL;
934 if (finfo.sec_ptrs != NULL)
936 free (finfo.sec_ptrs);
937 finfo.sec_ptrs = NULL;
939 if (finfo.sym_indices != NULL)
941 free (finfo.sym_indices);
942 finfo.sym_indices = NULL;
944 if (finfo.linenos != NULL)
946 free (finfo.linenos);
947 finfo.linenos = NULL;
949 if (finfo.contents != NULL)
951 free (finfo.contents);
952 finfo.contents = NULL;
954 if (finfo.external_relocs != NULL)
956 free (finfo.external_relocs);
957 finfo.external_relocs = NULL;
959 if (finfo.internal_relocs != NULL)
961 free (finfo.internal_relocs);
962 finfo.internal_relocs = NULL;
965 /* The value of the last C_FILE symbol is supposed to be the symbol
966 index of the first external symbol. Write it out again if
968 if (finfo.last_file_index != -1
969 && (unsigned int) finfo.last_file.n_value != obj_raw_syment_count (abfd))
973 finfo.last_file.n_value = obj_raw_syment_count (abfd);
974 bfd_coff_swap_sym_out (abfd, &finfo.last_file,
977 pos = obj_sym_filepos (abfd) + finfo.last_file_index * symesz;
978 if (bfd_seek (abfd, pos, SEEK_SET) != 0
979 || bfd_bwrite (finfo.outsyms, symesz, abfd) != symesz)
983 /* If doing task linking (ld --task-link) then make a pass through the
984 global symbols, writing out any that are defined, and making them
988 finfo.failed = FALSE;
989 coff_link_hash_traverse (coff_hash_table (info),
990 _bfd_coff_write_task_globals, &finfo);
995 /* Write out the global symbols. */
996 finfo.failed = FALSE;
997 coff_link_hash_traverse (coff_hash_table (info),
998 _bfd_coff_write_global_sym, &finfo);
1002 /* The outsyms buffer is used by _bfd_coff_write_global_sym. */
1003 if (finfo.outsyms != NULL)
1005 free (finfo.outsyms);
1006 finfo.outsyms = NULL;
1009 if (info->relocatable && max_output_reloc_count > 0)
1011 /* Now that we have written out all the global symbols, we know
1012 the symbol indices to use for relocs against them, and we can
1013 finally write out the relocs. */
1014 amt = max_output_reloc_count * relsz;
1015 external_relocs = bfd_malloc (amt);
1016 if (external_relocs == NULL)
1019 for (o = abfd->sections; o != NULL; o = o->next)
1021 struct internal_reloc *irel;
1022 struct internal_reloc *irelend;
1023 struct coff_link_hash_entry **rel_hash;
1026 if (o->reloc_count == 0)
1029 irel = finfo.section_info[o->target_index].relocs;
1030 irelend = irel + o->reloc_count;
1031 rel_hash = finfo.section_info[o->target_index].rel_hashes;
1032 erel = external_relocs;
1033 for (; irel < irelend; irel++, rel_hash++, erel += relsz)
1035 if (*rel_hash != NULL)
1037 BFD_ASSERT ((*rel_hash)->indx >= 0);
1038 irel->r_symndx = (*rel_hash)->indx;
1040 bfd_coff_swap_reloc_out (abfd, irel, erel);
1043 if (bfd_seek (abfd, o->rel_filepos, SEEK_SET) != 0)
1045 if (obj_pe (abfd) && o->reloc_count >= 0xffff)
1047 /* In PE COFF, write the count of relocs as the first
1048 reloc. The header overflow bit will be set
1050 struct internal_reloc incount;
1051 bfd_byte *excount = (bfd_byte *)bfd_malloc (relsz);
1053 memset (&incount, 0, sizeof (incount));
1054 incount.r_vaddr = o->reloc_count + 1;
1055 bfd_coff_swap_reloc_out (abfd, (PTR) &incount, (PTR) excount);
1056 if (bfd_bwrite (excount, relsz, abfd) != relsz)
1057 /* We'll leak, but it's an error anyway. */
1061 if (bfd_bwrite (external_relocs,
1062 (bfd_size_type) relsz * o->reloc_count, abfd)
1063 != (bfd_size_type) relsz * o->reloc_count)
1067 free (external_relocs);
1068 external_relocs = NULL;
1071 /* Free up the section information. */
1072 if (finfo.section_info != NULL)
1076 for (i = 0; i < abfd->section_count; i++)
1078 if (finfo.section_info[i].relocs != NULL)
1079 free (finfo.section_info[i].relocs);
1080 if (finfo.section_info[i].rel_hashes != NULL)
1081 free (finfo.section_info[i].rel_hashes);
1083 free (finfo.section_info);
1084 finfo.section_info = NULL;
1087 /* If we have optimized stabs strings, output them. */
1088 if (coff_hash_table (info)->stab_info.stabstr != NULL)
1090 if (! _bfd_write_stab_strings (abfd, &coff_hash_table (info)->stab_info))
1094 /* Write out the string table. */
1095 if (obj_raw_syment_count (abfd) != 0 || long_section_names)
1099 pos = obj_sym_filepos (abfd) + obj_raw_syment_count (abfd) * symesz;
1100 if (bfd_seek (abfd, pos, SEEK_SET) != 0)
1103 #if STRING_SIZE_SIZE == 4
1105 _bfd_stringtab_size (finfo.strtab) + STRING_SIZE_SIZE,
1108 #error Change H_PUT_32 above
1111 if (bfd_bwrite (strbuf, (bfd_size_type) STRING_SIZE_SIZE, abfd)
1112 != STRING_SIZE_SIZE)
1115 if (! _bfd_stringtab_emit (abfd, finfo.strtab))
1118 obj_coff_strings_written (abfd) = TRUE;
1121 _bfd_stringtab_free (finfo.strtab);
1123 /* Setting bfd_get_symcount to 0 will cause write_object_contents to
1124 not try to write out the symbols. */
1125 bfd_get_symcount (abfd) = 0;
1130 if (debug_merge_allocated)
1131 coff_debug_merge_hash_table_free (&finfo.debug_merge);
1132 if (finfo.strtab != NULL)
1133 _bfd_stringtab_free (finfo.strtab);
1134 if (finfo.section_info != NULL)
1138 for (i = 0; i < abfd->section_count; i++)
1140 if (finfo.section_info[i].relocs != NULL)
1141 free (finfo.section_info[i].relocs);
1142 if (finfo.section_info[i].rel_hashes != NULL)
1143 free (finfo.section_info[i].rel_hashes);
1145 free (finfo.section_info);
1147 if (finfo.internal_syms != NULL)
1148 free (finfo.internal_syms);
1149 if (finfo.sec_ptrs != NULL)
1150 free (finfo.sec_ptrs);
1151 if (finfo.sym_indices != NULL)
1152 free (finfo.sym_indices);
1153 if (finfo.outsyms != NULL)
1154 free (finfo.outsyms);
1155 if (finfo.linenos != NULL)
1156 free (finfo.linenos);
1157 if (finfo.contents != NULL)
1158 free (finfo.contents);
1159 if (finfo.external_relocs != NULL)
1160 free (finfo.external_relocs);
1161 if (finfo.internal_relocs != NULL)
1162 free (finfo.internal_relocs);
1163 if (external_relocs != NULL)
1164 free (external_relocs);
1168 /* Parse out a -heap <reserved>,<commit> line. */
1171 dores_com (char *ptr, bfd *output_bfd, int heap)
1173 if (coff_data(output_bfd)->pe)
1175 int val = strtoul (ptr, &ptr, 0);
1178 pe_data(output_bfd)->pe_opthdr.SizeOfHeapReserve = val;
1180 pe_data(output_bfd)->pe_opthdr.SizeOfStackReserve = val;
1184 val = strtoul (ptr+1, &ptr, 0);
1186 pe_data(output_bfd)->pe_opthdr.SizeOfHeapCommit = val;
1188 pe_data(output_bfd)->pe_opthdr.SizeOfStackCommit = val;
1195 get_name (char *ptr, char **dst)
1200 while (*ptr && *ptr != ' ')
1206 /* Process any magic embedded commands in a section called .drectve. */
1209 process_embedded_commands (bfd *output_bfd,
1210 struct bfd_link_info *info ATTRIBUTE_UNUSED,
1213 asection *sec = bfd_get_section_by_name (abfd, ".drectve");
1221 if (!bfd_malloc_and_get_section (abfd, sec, ©))
1227 e = (char *) copy + sec->size;
1229 for (s = (char *) copy; s < e ; )
1236 if (CONST_STRNEQ (s, "-attr"))
1246 s = get_name (s, &name);
1247 s = get_name (s, &attribs);
1267 asec = bfd_get_section_by_name (abfd, name);
1271 asec->flags |= SEC_CODE;
1273 asec->flags |= SEC_READONLY;
1276 else if (CONST_STRNEQ (s, "-heap"))
1277 s = dores_com (s + 5, output_bfd, 1);
1279 else if (CONST_STRNEQ (s, "-stack"))
1280 s = dores_com (s + 6, output_bfd, 0);
1289 /* Place a marker against all symbols which are used by relocations.
1290 This marker can be picked up by the 'do we skip this symbol ?'
1291 loop in _bfd_coff_link_input_bfd() and used to prevent skipping
1295 mark_relocs (struct coff_final_link_info *finfo, bfd *input_bfd)
1299 if ((bfd_get_file_flags (input_bfd) & HAS_SYMS) == 0)
1302 for (a = input_bfd->sections; a != (asection *) NULL; a = a->next)
1304 struct internal_reloc * internal_relocs;
1305 struct internal_reloc * irel;
1306 struct internal_reloc * irelend;
1308 if ((a->flags & SEC_RELOC) == 0 || a->reloc_count < 1)
1310 /* Don't mark relocs in excluded sections. */
1311 if (a->output_section == bfd_abs_section_ptr)
1314 /* Read in the relocs. */
1315 internal_relocs = _bfd_coff_read_internal_relocs
1316 (input_bfd, a, FALSE,
1317 finfo->external_relocs,
1318 finfo->info->relocatable,
1319 (finfo->info->relocatable
1320 ? (finfo->section_info[ a->output_section->target_index ].relocs + a->output_section->reloc_count)
1321 : finfo->internal_relocs)
1324 if (internal_relocs == NULL)
1327 irel = internal_relocs;
1328 irelend = irel + a->reloc_count;
1330 /* Place a mark in the sym_indices array (whose entries have
1331 been initialised to 0) for all of the symbols that are used
1332 in the relocation table. This will then be picked up in the
1333 skip/don't-skip pass. */
1334 for (; irel < irelend; irel++)
1335 finfo->sym_indices[ irel->r_symndx ] = -1;
1339 /* Link an input file into the linker output file. This function
1340 handles all the sections and relocations of the input file at once. */
1343 _bfd_coff_link_input_bfd (struct coff_final_link_info *finfo, bfd *input_bfd)
1345 unsigned int n_tmask = coff_data (input_bfd)->local_n_tmask;
1346 unsigned int n_btshft = coff_data (input_bfd)->local_n_btshft;
1347 bfd_boolean (*adjust_symndx)
1348 (bfd *, struct bfd_link_info *, bfd *, asection *,
1349 struct internal_reloc *, bfd_boolean *);
1351 const char *strings;
1352 bfd_size_type syment_base;
1353 bfd_boolean copy, hash;
1354 bfd_size_type isymesz;
1355 bfd_size_type osymesz;
1356 bfd_size_type linesz;
1359 struct internal_syment *isymp;
1362 unsigned long output_index;
1364 struct coff_link_hash_entry **sym_hash;
1367 /* Move all the symbols to the output file. */
1369 output_bfd = finfo->output_bfd;
1371 syment_base = obj_raw_syment_count (output_bfd);
1372 isymesz = bfd_coff_symesz (input_bfd);
1373 osymesz = bfd_coff_symesz (output_bfd);
1374 linesz = bfd_coff_linesz (input_bfd);
1375 BFD_ASSERT (linesz == bfd_coff_linesz (output_bfd));
1378 if (! finfo->info->keep_memory)
1381 if ((output_bfd->flags & BFD_TRADITIONAL_FORMAT) != 0)
1384 if (! _bfd_coff_get_external_symbols (input_bfd))
1387 esym = (bfd_byte *) obj_coff_external_syms (input_bfd);
1388 esym_end = esym + obj_raw_syment_count (input_bfd) * isymesz;
1389 isymp = finfo->internal_syms;
1390 secpp = finfo->sec_ptrs;
1391 indexp = finfo->sym_indices;
1392 output_index = syment_base;
1393 outsym = finfo->outsyms;
1395 if (coff_data (output_bfd)->pe
1396 && ! process_embedded_commands (output_bfd, finfo->info, input_bfd))
1399 /* If we are going to perform relocations and also strip/discard some
1400 symbols then we must make sure that we do not strip/discard those
1401 symbols that are going to be involved in the relocations. */
1402 if (( finfo->info->strip != strip_none
1403 || finfo->info->discard != discard_none)
1404 && finfo->info->relocatable)
1406 /* Mark the symbol array as 'not-used'. */
1407 memset (indexp, 0, obj_raw_syment_count (input_bfd) * sizeof * indexp);
1409 mark_relocs (finfo, input_bfd);
1412 while (esym < esym_end)
1414 struct internal_syment isym;
1415 enum coff_symbol_classification classification;
1418 bfd_boolean dont_skip_symbol;
1421 bfd_coff_swap_sym_in (input_bfd, esym, isymp);
1423 /* Make a copy of *isymp so that the relocate_section function
1424 always sees the original values. This is more reliable than
1425 always recomputing the symbol value even if we are stripping
1429 classification = bfd_coff_classify_symbol (input_bfd, &isym);
1430 switch (classification)
1434 case COFF_SYMBOL_GLOBAL:
1435 case COFF_SYMBOL_PE_SECTION:
1436 case COFF_SYMBOL_LOCAL:
1437 *secpp = coff_section_from_bfd_index (input_bfd, isym.n_scnum);
1439 case COFF_SYMBOL_COMMON:
1440 *secpp = bfd_com_section_ptr;
1442 case COFF_SYMBOL_UNDEFINED:
1443 *secpp = bfd_und_section_ptr;
1447 /* Extract the flag indicating if this symbol is used by a
1449 if ((finfo->info->strip != strip_none
1450 || finfo->info->discard != discard_none)
1451 && finfo->info->relocatable)
1452 dont_skip_symbol = *indexp;
1454 dont_skip_symbol = FALSE;
1460 add = 1 + isym.n_numaux;
1462 /* If we are stripping all symbols, we want to skip this one. */
1463 if (finfo->info->strip == strip_all && ! dont_skip_symbol)
1468 switch (classification)
1472 case COFF_SYMBOL_GLOBAL:
1473 case COFF_SYMBOL_COMMON:
1474 case COFF_SYMBOL_PE_SECTION:
1475 /* This is a global symbol. Global symbols come at the
1476 end of the symbol table, so skip them for now.
1477 Locally defined function symbols, however, are an
1478 exception, and are not moved to the end. */
1480 if (! ISFCN (isym.n_type))
1484 case COFF_SYMBOL_UNDEFINED:
1485 /* Undefined symbols are left for the end. */
1490 case COFF_SYMBOL_LOCAL:
1491 /* This is a local symbol. Skip it if we are discarding
1493 if (finfo->info->discard == discard_all && ! dont_skip_symbol)
1499 #ifndef COFF_WITH_PE
1500 /* Skip section symbols for sections which are not going to be
1503 && dont_skip_symbol == 0
1504 && isym.n_sclass == C_STAT
1505 && isym.n_type == T_NULL
1506 && isym.n_numaux > 0
1507 && (*secpp)->output_section == bfd_abs_section_ptr)
1511 /* If we stripping debugging symbols, and this is a debugging
1512 symbol, then skip it. FIXME: gas sets the section to N_ABS
1513 for some types of debugging symbols; I don't know if this is
1514 a bug or not. In any case, we handle it here. */
1516 && finfo->info->strip == strip_debugger
1517 && ! dont_skip_symbol
1518 && (isym.n_scnum == N_DEBUG
1519 || (isym.n_scnum == N_ABS
1520 && (isym.n_sclass == C_AUTO
1521 || isym.n_sclass == C_REG
1522 || isym.n_sclass == C_MOS
1523 || isym.n_sclass == C_MOE
1524 || isym.n_sclass == C_MOU
1525 || isym.n_sclass == C_ARG
1526 || isym.n_sclass == C_REGPARM
1527 || isym.n_sclass == C_FIELD
1528 || isym.n_sclass == C_EOS))))
1531 /* If some symbols are stripped based on the name, work out the
1532 name and decide whether to skip this symbol. */
1534 && (finfo->info->strip == strip_some
1535 || finfo->info->discard == discard_l))
1538 char buf[SYMNMLEN + 1];
1540 name = _bfd_coff_internal_syment_name (input_bfd, &isym, buf);
1544 if (! dont_skip_symbol
1545 && ((finfo->info->strip == strip_some
1546 && (bfd_hash_lookup (finfo->info->keep_hash, name, FALSE,
1549 && finfo->info->discard == discard_l
1550 && bfd_is_local_label_name (input_bfd, name))))
1554 /* If this is an enum, struct, or union tag, see if we have
1555 already output an identical type. */
1557 && (finfo->output_bfd->flags & BFD_TRADITIONAL_FORMAT) == 0
1558 && (isym.n_sclass == C_ENTAG
1559 || isym.n_sclass == C_STRTAG
1560 || isym.n_sclass == C_UNTAG)
1561 && isym.n_numaux == 1)
1564 char buf[SYMNMLEN + 1];
1565 struct coff_debug_merge_hash_entry *mh;
1566 struct coff_debug_merge_type *mt;
1567 union internal_auxent aux;
1568 struct coff_debug_merge_element **epp;
1569 bfd_byte *esl, *eslend;
1570 struct internal_syment *islp;
1573 name = _bfd_coff_internal_syment_name (input_bfd, &isym, buf);
1577 /* Ignore fake names invented by compiler; treat them all as
1579 if (*name == '~' || *name == '.' || *name == '$'
1580 || (*name == bfd_get_symbol_leading_char (input_bfd)
1581 && (name[1] == '~' || name[1] == '.' || name[1] == '$')))
1584 mh = coff_debug_merge_hash_lookup (&finfo->debug_merge, name,
1589 /* Allocate memory to hold type information. If this turns
1590 out to be a duplicate, we pass this address to
1592 amt = sizeof (struct coff_debug_merge_type);
1593 mt = bfd_alloc (input_bfd, amt);
1596 mt->class = isym.n_sclass;
1598 /* Pick up the aux entry, which points to the end of the tag
1600 bfd_coff_swap_aux_in (input_bfd, (esym + isymesz),
1601 isym.n_type, isym.n_sclass, 0, isym.n_numaux,
1604 /* Gather the elements. */
1605 epp = &mt->elements;
1606 mt->elements = NULL;
1608 esl = esym + 2 * isymesz;
1609 eslend = ((bfd_byte *) obj_coff_external_syms (input_bfd)
1610 + aux.x_sym.x_fcnary.x_fcn.x_endndx.l * isymesz);
1611 while (esl < eslend)
1613 const char *elename;
1614 char elebuf[SYMNMLEN + 1];
1617 bfd_coff_swap_sym_in (input_bfd, esl, islp);
1619 amt = sizeof (struct coff_debug_merge_element);
1620 *epp = bfd_alloc (input_bfd, amt);
1624 elename = _bfd_coff_internal_syment_name (input_bfd, islp,
1626 if (elename == NULL)
1629 amt = strlen (elename) + 1;
1630 name_copy = bfd_alloc (input_bfd, amt);
1631 if (name_copy == NULL)
1633 strcpy (name_copy, elename);
1635 (*epp)->name = name_copy;
1636 (*epp)->type = islp->n_type;
1638 if (islp->n_numaux >= 1
1639 && islp->n_type != T_NULL
1640 && islp->n_sclass != C_EOS)
1642 union internal_auxent eleaux;
1645 bfd_coff_swap_aux_in (input_bfd, (esl + isymesz),
1646 islp->n_type, islp->n_sclass, 0,
1647 islp->n_numaux, &eleaux);
1648 indx = eleaux.x_sym.x_tagndx.l;
1650 /* FIXME: If this tagndx entry refers to a symbol
1651 defined later in this file, we just ignore it.
1652 Handling this correctly would be tedious, and may
1657 (bfd_byte *) obj_coff_external_syms (input_bfd))
1660 (*epp)->tagndx = finfo->sym_indices[indx];
1661 if ((*epp)->tagndx < 0)
1665 epp = &(*epp)->next;
1668 esl += (islp->n_numaux + 1) * isymesz;
1669 islp += islp->n_numaux + 1;
1672 /* See if we already have a definition which matches this
1673 type. We always output the type if it has no elements,
1675 if (mt->elements == NULL)
1676 bfd_release (input_bfd, mt);
1679 struct coff_debug_merge_type *mtl;
1681 for (mtl = mh->types; mtl != NULL; mtl = mtl->next)
1683 struct coff_debug_merge_element *me, *mel;
1685 if (mtl->class != mt->class)
1688 for (me = mt->elements, mel = mtl->elements;
1689 me != NULL && mel != NULL;
1690 me = me->next, mel = mel->next)
1692 if (strcmp (me->name, mel->name) != 0
1693 || me->type != mel->type
1694 || me->tagndx != mel->tagndx)
1698 if (me == NULL && mel == NULL)
1702 if (mtl == NULL || (bfd_size_type) mtl->indx >= syment_base)
1704 /* This is the first definition of this type. */
1705 mt->indx = output_index;
1706 mt->next = mh->types;
1711 /* This is a redefinition which can be merged. */
1712 bfd_release (input_bfd, mt);
1713 *indexp = mtl->indx;
1714 add = (eslend - esym) / isymesz;
1720 /* We now know whether we are to skip this symbol or not. */
1723 /* Adjust the symbol in order to output it. */
1725 if (isym._n._n_n._n_zeroes == 0
1726 && isym._n._n_n._n_offset != 0)
1731 /* This symbol has a long name. Enter it in the string
1732 table we are building. Note that we do not check
1733 bfd_coff_symname_in_debug. That is only true for
1734 XCOFF, and XCOFF requires different linking code
1736 name = _bfd_coff_internal_syment_name (input_bfd, &isym, NULL);
1739 indx = _bfd_stringtab_add (finfo->strtab, name, hash, copy);
1740 if (indx == (bfd_size_type) -1)
1742 isym._n._n_n._n_offset = STRING_SIZE_SIZE + indx;
1745 switch (isym.n_sclass)
1761 /* The symbol value should not be modified. */
1765 if (obj_pe (input_bfd)
1766 && strcmp (isym.n_name, ".bf") != 0
1767 && isym.n_scnum > 0)
1769 /* For PE, .lf and .ef get their value left alone,
1770 while .bf gets relocated. However, they all have
1771 "real" section numbers, and need to be moved into
1773 isym.n_scnum = (*secpp)->output_section->target_index;
1778 case C_LABEL: /* Not completely sure about these 2 */
1787 /* Compute new symbol location. */
1788 if (isym.n_scnum > 0)
1790 isym.n_scnum = (*secpp)->output_section->target_index;
1791 isym.n_value += (*secpp)->output_offset;
1792 if (! obj_pe (input_bfd))
1793 isym.n_value -= (*secpp)->vma;
1794 if (! obj_pe (finfo->output_bfd))
1795 isym.n_value += (*secpp)->output_section->vma;
1800 /* The value of a C_FILE symbol is the symbol index of
1801 the next C_FILE symbol. The value of the last C_FILE
1802 symbol is the symbol index to the first external
1803 symbol (actually, coff_renumber_symbols does not get
1804 this right--it just sets the value of the last C_FILE
1805 symbol to zero--and nobody has ever complained about
1806 it). We try to get this right, below, just before we
1807 write the symbols out, but in the general case we may
1808 have to write the symbol out twice. */
1809 if (finfo->last_file_index != -1
1810 && finfo->last_file.n_value != (bfd_vma) output_index)
1812 /* We must correct the value of the last C_FILE
1814 finfo->last_file.n_value = output_index;
1815 if ((bfd_size_type) finfo->last_file_index >= syment_base)
1817 /* The last C_FILE symbol is in this input file. */
1818 bfd_coff_swap_sym_out (output_bfd,
1821 + ((finfo->last_file_index
1829 /* We have already written out the last C_FILE
1830 symbol. We need to write it out again. We
1831 borrow *outsym temporarily. */
1832 bfd_coff_swap_sym_out (output_bfd,
1833 &finfo->last_file, outsym);
1834 pos = obj_sym_filepos (output_bfd);
1835 pos += finfo->last_file_index * osymesz;
1836 if (bfd_seek (output_bfd, pos, SEEK_SET) != 0
1837 || bfd_bwrite (outsym, osymesz, output_bfd) != osymesz)
1842 finfo->last_file_index = output_index;
1843 finfo->last_file = isym;
1847 /* If doing task linking, convert normal global function symbols to
1848 static functions. */
1849 if (finfo->info->task_link && IS_EXTERNAL (input_bfd, isym))
1850 isym.n_sclass = C_STAT;
1852 /* Output the symbol. */
1853 bfd_coff_swap_sym_out (output_bfd, &isym, outsym);
1855 *indexp = output_index;
1860 struct coff_link_hash_entry *h;
1862 indx = ((esym - (bfd_byte *) obj_coff_external_syms (input_bfd))
1864 h = obj_coff_sym_hashes (input_bfd)[indx];
1867 /* This can happen if there were errors earlier in
1869 bfd_set_error (bfd_error_bad_value);
1872 h->indx = output_index;
1875 output_index += add;
1876 outsym += add * osymesz;
1879 esym += add * isymesz;
1883 for (--add; add > 0; --add)
1890 /* Fix up the aux entries. This must be done in a separate pass,
1891 because we don't know the correct symbol indices until we have
1892 already decided which symbols we are going to keep. */
1893 esym = (bfd_byte *) obj_coff_external_syms (input_bfd);
1894 esym_end = esym + obj_raw_syment_count (input_bfd) * isymesz;
1895 isymp = finfo->internal_syms;
1896 indexp = finfo->sym_indices;
1897 sym_hash = obj_coff_sym_hashes (input_bfd);
1898 outsym = finfo->outsyms;
1900 while (esym < esym_end)
1904 add = 1 + isymp->n_numaux;
1907 || (bfd_size_type) *indexp < syment_base)
1908 && (*sym_hash == NULL
1909 || (*sym_hash)->auxbfd != input_bfd))
1910 esym += add * isymesz;
1913 struct coff_link_hash_entry *h;
1921 /* The m68k-motorola-sysv assembler will sometimes
1922 generate two symbols with the same name, but only one
1923 will have aux entries. */
1924 BFD_ASSERT (isymp->n_numaux == 0
1926 || h->numaux == isymp->n_numaux);
1934 /* Handle the aux entries. This handling is based on
1935 coff_pointerize_aux. I don't know if it always correct. */
1936 for (i = 0; i < isymp->n_numaux && esym < esym_end; i++)
1938 union internal_auxent aux;
1939 union internal_auxent *auxp;
1941 if (h != NULL && h->aux != NULL && (h->numaux > i))
1945 bfd_coff_swap_aux_in (input_bfd, esym, isymp->n_type,
1946 isymp->n_sclass, i, isymp->n_numaux, &aux);
1950 if (isymp->n_sclass == C_FILE)
1952 /* If this is a long filename, we must put it in the
1954 if (auxp->x_file.x_n.x_zeroes == 0
1955 && auxp->x_file.x_n.x_offset != 0)
1957 const char *filename;
1960 BFD_ASSERT (auxp->x_file.x_n.x_offset
1961 >= STRING_SIZE_SIZE);
1962 if (strings == NULL)
1964 strings = _bfd_coff_read_string_table (input_bfd);
1965 if (strings == NULL)
1968 filename = strings + auxp->x_file.x_n.x_offset;
1969 indx = _bfd_stringtab_add (finfo->strtab, filename,
1971 if (indx == (bfd_size_type) -1)
1973 auxp->x_file.x_n.x_offset = STRING_SIZE_SIZE + indx;
1976 else if ((isymp->n_sclass != C_STAT || isymp->n_type != T_NULL)
1977 && isymp->n_sclass != C_NT_WEAK)
1981 if (ISFCN (isymp->n_type)
1982 || ISTAG (isymp->n_sclass)
1983 || isymp->n_sclass == C_BLOCK
1984 || isymp->n_sclass == C_FCN)
1986 indx = auxp->x_sym.x_fcnary.x_fcn.x_endndx.l;
1988 && indx < obj_raw_syment_count (input_bfd))
1990 /* We look forward through the symbol for
1991 the index of the next symbol we are going
1992 to include. I don't know if this is
1994 while ((finfo->sym_indices[indx] < 0
1995 || ((bfd_size_type) finfo->sym_indices[indx]
1997 && indx < obj_raw_syment_count (input_bfd))
1999 if (indx >= obj_raw_syment_count (input_bfd))
2000 indx = output_index;
2002 indx = finfo->sym_indices[indx];
2003 auxp->x_sym.x_fcnary.x_fcn.x_endndx.l = indx;
2007 indx = auxp->x_sym.x_tagndx.l;
2008 if (indx > 0 && indx < obj_raw_syment_count (input_bfd))
2012 symindx = finfo->sym_indices[indx];
2014 auxp->x_sym.x_tagndx.l = 0;
2016 auxp->x_sym.x_tagndx.l = symindx;
2019 /* The .bf symbols are supposed to be linked through
2020 the endndx field. We need to carry this list
2021 across object files. */
2024 && isymp->n_sclass == C_FCN
2025 && (isymp->_n._n_n._n_zeroes != 0
2026 || isymp->_n._n_n._n_offset == 0)
2027 && isymp->_n._n_name[0] == '.'
2028 && isymp->_n._n_name[1] == 'b'
2029 && isymp->_n._n_name[2] == 'f'
2030 && isymp->_n._n_name[3] == '\0')
2032 if (finfo->last_bf_index != -1)
2034 finfo->last_bf.x_sym.x_fcnary.x_fcn.x_endndx.l =
2037 if ((bfd_size_type) finfo->last_bf_index
2042 /* The last .bf symbol is in this input
2043 file. This will only happen if the
2044 assembler did not set up the .bf
2045 endndx symbols correctly. */
2046 auxout = (finfo->outsyms
2047 + ((finfo->last_bf_index
2051 bfd_coff_swap_aux_out (output_bfd,
2062 /* We have already written out the last
2063 .bf aux entry. We need to write it
2064 out again. We borrow *outsym
2065 temporarily. FIXME: This case should
2067 bfd_coff_swap_aux_out (output_bfd,
2073 pos = obj_sym_filepos (output_bfd);
2074 pos += finfo->last_bf_index * osymesz;
2075 if (bfd_seek (output_bfd, pos, SEEK_SET) != 0
2076 || (bfd_bwrite (outsym, osymesz, output_bfd)
2082 if (auxp->x_sym.x_fcnary.x_fcn.x_endndx.l != 0)
2083 finfo->last_bf_index = -1;
2086 /* The endndx field of this aux entry must
2087 be updated with the symbol number of the
2089 finfo->last_bf = *auxp;
2090 finfo->last_bf_index = (((outsym - finfo->outsyms)
2099 bfd_coff_swap_aux_out (output_bfd, auxp, isymp->n_type,
2100 isymp->n_sclass, i, isymp->n_numaux,
2114 /* Relocate the line numbers, unless we are stripping them. */
2115 if (finfo->info->strip == strip_none
2116 || finfo->info->strip == strip_some)
2118 for (o = input_bfd->sections; o != NULL; o = o->next)
2124 bfd_boolean skipping;
2128 /* FIXME: If SEC_HAS_CONTENTS is not for the section, then
2129 build_link_order in ldwrite.c will not have created a
2130 link order, which means that we will not have seen this
2131 input section in _bfd_coff_final_link, which means that
2132 we will not have allocated space for the line numbers of
2133 this section. I don't think line numbers can be
2134 meaningful for a section which does not have
2135 SEC_HAS_CONTENTS set, but, if they do, this must be
2137 if (o->lineno_count == 0
2138 || (o->output_section->flags & SEC_HAS_CONTENTS) == 0)
2141 if (bfd_seek (input_bfd, o->line_filepos, SEEK_SET) != 0
2142 || bfd_bread (finfo->linenos, linesz * o->lineno_count,
2143 input_bfd) != linesz * o->lineno_count)
2146 offset = o->output_section->vma + o->output_offset - o->vma;
2147 eline = finfo->linenos;
2148 oeline = finfo->linenos;
2149 elineend = eline + linesz * o->lineno_count;
2151 for (; eline < elineend; eline += linesz)
2153 struct internal_lineno iline;
2155 bfd_coff_swap_lineno_in (input_bfd, eline, &iline);
2157 if (iline.l_lnno != 0)
2158 iline.l_addr.l_paddr += offset;
2159 else if (iline.l_addr.l_symndx >= 0
2160 && ((unsigned long) iline.l_addr.l_symndx
2161 < obj_raw_syment_count (input_bfd)))
2165 indx = finfo->sym_indices[iline.l_addr.l_symndx];
2169 /* These line numbers are attached to a symbol
2170 which we are stripping. We must discard the
2171 line numbers because reading them back with
2172 no associated symbol (or associating them all
2173 with symbol #0) will fail. We can't regain
2174 the space in the output file, but at least
2180 struct internal_syment is;
2181 union internal_auxent ia;
2183 /* Fix up the lnnoptr field in the aux entry of
2184 the symbol. It turns out that we can't do
2185 this when we modify the symbol aux entries,
2186 because gas sometimes screws up the lnnoptr
2187 field and makes it an offset from the start
2188 of the line numbers rather than an absolute
2190 bfd_coff_swap_sym_in (output_bfd,
2192 + ((indx - syment_base)
2194 if ((ISFCN (is.n_type)
2195 || is.n_sclass == C_BLOCK)
2196 && is.n_numaux >= 1)
2200 auxptr = (finfo->outsyms
2201 + ((indx - syment_base + 1)
2203 bfd_coff_swap_aux_in (output_bfd, auxptr,
2204 is.n_type, is.n_sclass,
2205 0, is.n_numaux, &ia);
2206 ia.x_sym.x_fcnary.x_fcn.x_lnnoptr =
2207 (o->output_section->line_filepos
2208 + o->output_section->lineno_count * linesz
2209 + eline - finfo->linenos);
2210 bfd_coff_swap_aux_out (output_bfd, &ia,
2211 is.n_type, is.n_sclass, 0,
2212 is.n_numaux, auxptr);
2218 iline.l_addr.l_symndx = indx;
2223 bfd_coff_swap_lineno_out (output_bfd, &iline, oeline);
2228 pos = o->output_section->line_filepos;
2229 pos += o->output_section->lineno_count * linesz;
2230 amt = oeline - finfo->linenos;
2231 if (bfd_seek (output_bfd, pos, SEEK_SET) != 0
2232 || bfd_bwrite (finfo->linenos, amt, output_bfd) != amt)
2235 o->output_section->lineno_count += amt / linesz;
2239 /* If we swapped out a C_FILE symbol, guess that the next C_FILE
2240 symbol will be the first symbol in the next input file. In the
2241 normal case, this will save us from writing out the C_FILE symbol
2243 if (finfo->last_file_index != -1
2244 && (bfd_size_type) finfo->last_file_index >= syment_base)
2246 finfo->last_file.n_value = output_index;
2247 bfd_coff_swap_sym_out (output_bfd, &finfo->last_file,
2249 + ((finfo->last_file_index - syment_base)
2253 /* Write the modified symbols to the output file. */
2254 if (outsym > finfo->outsyms)
2259 pos = obj_sym_filepos (output_bfd) + syment_base * osymesz;
2260 amt = outsym - finfo->outsyms;
2261 if (bfd_seek (output_bfd, pos, SEEK_SET) != 0
2262 || bfd_bwrite (finfo->outsyms, amt, output_bfd) != amt)
2265 BFD_ASSERT ((obj_raw_syment_count (output_bfd)
2266 + (outsym - finfo->outsyms) / osymesz)
2269 obj_raw_syment_count (output_bfd) = output_index;
2272 /* Relocate the contents of each section. */
2273 adjust_symndx = coff_backend_info (input_bfd)->_bfd_coff_adjust_symndx;
2274 for (o = input_bfd->sections; o != NULL; o = o->next)
2277 struct coff_section_tdata *secdata;
2279 if (! o->linker_mark)
2280 /* This section was omitted from the link. */
2283 if ((o->flags & SEC_LINKER_CREATED) != 0)
2286 if ((o->flags & SEC_HAS_CONTENTS) == 0
2287 || (o->size == 0 && (o->flags & SEC_RELOC) == 0))
2289 if ((o->flags & SEC_RELOC) != 0
2290 && o->reloc_count != 0)
2292 (*_bfd_error_handler)
2293 (_("%B: relocs in section `%A', but it has no contents"),
2295 bfd_set_error (bfd_error_no_contents);
2302 secdata = coff_section_data (input_bfd, o);
2303 if (secdata != NULL && secdata->contents != NULL)
2304 contents = secdata->contents;
2307 bfd_size_type x = o->rawsize ? o->rawsize : o->size;
2308 if (! bfd_get_section_contents (input_bfd, o, finfo->contents, 0, x))
2310 contents = finfo->contents;
2313 if ((o->flags & SEC_RELOC) != 0)
2316 struct internal_reloc *internal_relocs;
2317 struct internal_reloc *irel;
2319 /* Read in the relocs. */
2320 target_index = o->output_section->target_index;
2321 internal_relocs = (_bfd_coff_read_internal_relocs
2322 (input_bfd, o, FALSE, finfo->external_relocs,
2323 finfo->info->relocatable,
2324 (finfo->info->relocatable
2325 ? (finfo->section_info[target_index].relocs
2326 + o->output_section->reloc_count)
2327 : finfo->internal_relocs)));
2328 if (internal_relocs == NULL)
2331 /* Call processor specific code to relocate the section
2333 if (! bfd_coff_relocate_section (output_bfd, finfo->info,
2337 finfo->internal_syms,
2341 if (finfo->info->relocatable)
2344 struct internal_reloc *irelend;
2345 struct coff_link_hash_entry **rel_hash;
2347 offset = o->output_section->vma + o->output_offset - o->vma;
2348 irel = internal_relocs;
2349 irelend = irel + o->reloc_count;
2350 rel_hash = (finfo->section_info[target_index].rel_hashes
2351 + o->output_section->reloc_count);
2352 for (; irel < irelend; irel++, rel_hash++)
2354 struct coff_link_hash_entry *h;
2355 bfd_boolean adjusted;
2359 /* Adjust the reloc address and symbol index. */
2360 irel->r_vaddr += offset;
2362 if (irel->r_symndx == -1)
2367 if (! (*adjust_symndx) (output_bfd, finfo->info,
2375 h = obj_coff_sym_hashes (input_bfd)[irel->r_symndx];
2378 /* This is a global symbol. */
2380 irel->r_symndx = h->indx;
2383 /* This symbol is being written at the end
2384 of the file, and we do not yet know the
2385 symbol index. We save the pointer to the
2386 hash table entry in the rel_hash list.
2387 We set the indx field to -2 to indicate
2388 that this symbol must not be stripped. */
2397 indx = finfo->sym_indices[irel->r_symndx];
2399 irel->r_symndx = indx;
2402 struct internal_syment *is;
2404 char buf[SYMNMLEN + 1];
2406 /* This reloc is against a symbol we are
2407 stripping. This should have been handled
2408 by the 'dont_skip_symbol' code in the while
2409 loop at the top of this function. */
2410 is = finfo->internal_syms + irel->r_symndx;
2412 name = (_bfd_coff_internal_syment_name
2413 (input_bfd, is, buf));
2417 if (! ((*finfo->info->callbacks->unattached_reloc)
2418 (finfo->info, name, input_bfd, o,
2425 o->output_section->reloc_count += o->reloc_count;
2429 /* Write out the modified section contents. */
2430 if (secdata == NULL || secdata->stab_info == NULL)
2432 file_ptr loc = o->output_offset * bfd_octets_per_byte (output_bfd);
2433 if (! bfd_set_section_contents (output_bfd, o->output_section,
2434 contents, loc, o->size))
2439 if (! (_bfd_write_section_stabs
2440 (output_bfd, &coff_hash_table (finfo->info)->stab_info,
2441 o, &secdata->stab_info, contents)))
2446 if (! finfo->info->keep_memory
2447 && ! _bfd_coff_free_symbols (input_bfd))
2453 /* Write out a global symbol. Called via coff_link_hash_traverse. */
2456 _bfd_coff_write_global_sym (struct coff_link_hash_entry *h, void *data)
2458 struct coff_final_link_info *finfo = (struct coff_final_link_info *) data;
2460 struct internal_syment isym;
2461 bfd_size_type symesz;
2465 output_bfd = finfo->output_bfd;
2467 if (h->root.type == bfd_link_hash_warning)
2469 h = (struct coff_link_hash_entry *) h->root.u.i.link;
2470 if (h->root.type == bfd_link_hash_new)
2478 && (finfo->info->strip == strip_all
2479 || (finfo->info->strip == strip_some
2480 && (bfd_hash_lookup (finfo->info->keep_hash,
2481 h->root.root.string, FALSE, FALSE)
2485 switch (h->root.type)
2488 case bfd_link_hash_new:
2489 case bfd_link_hash_warning:
2493 case bfd_link_hash_undefined:
2494 case bfd_link_hash_undefweak:
2495 isym.n_scnum = N_UNDEF;
2499 case bfd_link_hash_defined:
2500 case bfd_link_hash_defweak:
2504 sec = h->root.u.def.section->output_section;
2505 if (bfd_is_abs_section (sec))
2506 isym.n_scnum = N_ABS;
2508 isym.n_scnum = sec->target_index;
2509 isym.n_value = (h->root.u.def.value
2510 + h->root.u.def.section->output_offset);
2511 if (! obj_pe (finfo->output_bfd))
2512 isym.n_value += sec->vma;
2516 case bfd_link_hash_common:
2517 isym.n_scnum = N_UNDEF;
2518 isym.n_value = h->root.u.c.size;
2521 case bfd_link_hash_indirect:
2522 /* Just ignore these. They can't be handled anyhow. */
2526 if (strlen (h->root.root.string) <= SYMNMLEN)
2527 strncpy (isym._n._n_name, h->root.root.string, SYMNMLEN);
2534 if ((output_bfd->flags & BFD_TRADITIONAL_FORMAT) != 0)
2536 indx = _bfd_stringtab_add (finfo->strtab, h->root.root.string, hash,
2538 if (indx == (bfd_size_type) -1)
2540 finfo->failed = TRUE;
2543 isym._n._n_n._n_zeroes = 0;
2544 isym._n._n_n._n_offset = STRING_SIZE_SIZE + indx;
2547 isym.n_sclass = h->class;
2548 isym.n_type = h->type;
2550 if (isym.n_sclass == C_NULL)
2551 isym.n_sclass = C_EXT;
2553 /* If doing task linking and this is the pass where we convert
2554 defined globals to statics, then do that conversion now. If the
2555 symbol is not being converted, just ignore it and it will be
2556 output during a later pass. */
2557 if (finfo->global_to_static)
2559 if (! IS_EXTERNAL (output_bfd, isym))
2562 isym.n_sclass = C_STAT;
2565 /* When a weak symbol is not overridden by a strong one,
2566 turn it into an external symbol when not building a
2567 shared or relocatable object. */
2568 if (! finfo->info->shared
2569 && ! finfo->info->relocatable
2570 && IS_WEAK_EXTERNAL (finfo->output_bfd, isym))
2571 isym.n_sclass = C_EXT;
2573 isym.n_numaux = h->numaux;
2575 bfd_coff_swap_sym_out (output_bfd, &isym, finfo->outsyms);
2577 symesz = bfd_coff_symesz (output_bfd);
2579 pos = obj_sym_filepos (output_bfd);
2580 pos += obj_raw_syment_count (output_bfd) * symesz;
2581 if (bfd_seek (output_bfd, pos, SEEK_SET) != 0
2582 || bfd_bwrite (finfo->outsyms, symesz, output_bfd) != symesz)
2584 finfo->failed = TRUE;
2588 h->indx = obj_raw_syment_count (output_bfd);
2590 ++obj_raw_syment_count (output_bfd);
2592 /* Write out any associated aux entries. Most of the aux entries
2593 will have been modified in _bfd_coff_link_input_bfd. We have to
2594 handle section aux entries here, now that we have the final
2595 relocation and line number counts. */
2596 for (i = 0; i < isym.n_numaux; i++)
2598 union internal_auxent *auxp;
2602 /* Look for a section aux entry here using the same tests that
2603 coff_swap_aux_out uses. */
2605 && (isym.n_sclass == C_STAT
2606 || isym.n_sclass == C_HIDDEN)
2607 && isym.n_type == T_NULL
2608 && (h->root.type == bfd_link_hash_defined
2609 || h->root.type == bfd_link_hash_defweak))
2613 sec = h->root.u.def.section->output_section;
2616 auxp->x_scn.x_scnlen = sec->size;
2618 /* For PE, an overflow on the final link reportedly does
2619 not matter. FIXME: Why not? */
2620 if (sec->reloc_count > 0xffff
2621 && (! obj_pe (output_bfd)
2622 || finfo->info->relocatable))
2623 (*_bfd_error_handler)
2624 (_("%s: %s: reloc overflow: 0x%lx > 0xffff"),
2625 bfd_get_filename (output_bfd),
2626 bfd_get_section_name (output_bfd, sec),
2629 if (sec->lineno_count > 0xffff
2630 && (! obj_pe (output_bfd)
2631 || finfo->info->relocatable))
2632 (*_bfd_error_handler)
2633 (_("%s: warning: %s: line number overflow: 0x%lx > 0xffff"),
2634 bfd_get_filename (output_bfd),
2635 bfd_get_section_name (output_bfd, sec),
2638 auxp->x_scn.x_nreloc = sec->reloc_count;
2639 auxp->x_scn.x_nlinno = sec->lineno_count;
2640 auxp->x_scn.x_checksum = 0;
2641 auxp->x_scn.x_associated = 0;
2642 auxp->x_scn.x_comdat = 0;
2646 bfd_coff_swap_aux_out (output_bfd, auxp, isym.n_type,
2647 isym.n_sclass, (int) i, isym.n_numaux,
2649 if (bfd_bwrite (finfo->outsyms, symesz, output_bfd) != symesz)
2651 finfo->failed = TRUE;
2654 ++obj_raw_syment_count (output_bfd);
2660 /* Write out task global symbols, converting them to statics. Called
2661 via coff_link_hash_traverse. Calls bfd_coff_write_global_sym to do
2662 the dirty work, if the symbol we are processing needs conversion. */
2665 _bfd_coff_write_task_globals (struct coff_link_hash_entry *h, void *data)
2667 struct coff_final_link_info *finfo = (struct coff_final_link_info *) data;
2668 bfd_boolean rtnval = TRUE;
2669 bfd_boolean save_global_to_static;
2671 if (h->root.type == bfd_link_hash_warning)
2672 h = (struct coff_link_hash_entry *) h->root.u.i.link;
2676 switch (h->root.type)
2678 case bfd_link_hash_defined:
2679 case bfd_link_hash_defweak:
2680 save_global_to_static = finfo->global_to_static;
2681 finfo->global_to_static = TRUE;
2682 rtnval = _bfd_coff_write_global_sym (h, data);
2683 finfo->global_to_static = save_global_to_static;
2692 /* Handle a link order which is supposed to generate a reloc. */
2695 _bfd_coff_reloc_link_order (bfd *output_bfd,
2696 struct coff_final_link_info *finfo,
2697 asection *output_section,
2698 struct bfd_link_order *link_order)
2700 reloc_howto_type *howto;
2701 struct internal_reloc *irel;
2702 struct coff_link_hash_entry **rel_hash_ptr;
2704 howto = bfd_reloc_type_lookup (output_bfd, link_order->u.reloc.p->reloc);
2707 bfd_set_error (bfd_error_bad_value);
2711 if (link_order->u.reloc.p->addend != 0)
2715 bfd_reloc_status_type rstat;
2719 size = bfd_get_reloc_size (howto);
2720 buf = bfd_zmalloc (size);
2724 rstat = _bfd_relocate_contents (howto, output_bfd,
2725 (bfd_vma) link_order->u.reloc.p->addend,\
2732 case bfd_reloc_outofrange:
2734 case bfd_reloc_overflow:
2735 if (! ((*finfo->info->callbacks->reloc_overflow)
2737 (link_order->type == bfd_section_reloc_link_order
2738 ? bfd_section_name (output_bfd,
2739 link_order->u.reloc.p->u.section)
2740 : link_order->u.reloc.p->u.name),
2741 howto->name, link_order->u.reloc.p->addend,
2742 (bfd *) NULL, (asection *) NULL, (bfd_vma) 0)))
2749 loc = link_order->offset * bfd_octets_per_byte (output_bfd);
2750 ok = bfd_set_section_contents (output_bfd, output_section, buf,
2757 /* Store the reloc information in the right place. It will get
2758 swapped and written out at the end of the final_link routine. */
2759 irel = (finfo->section_info[output_section->target_index].relocs
2760 + output_section->reloc_count);
2761 rel_hash_ptr = (finfo->section_info[output_section->target_index].rel_hashes
2762 + output_section->reloc_count);
2764 memset (irel, 0, sizeof (struct internal_reloc));
2765 *rel_hash_ptr = NULL;
2767 irel->r_vaddr = output_section->vma + link_order->offset;
2769 if (link_order->type == bfd_section_reloc_link_order)
2771 /* We need to somehow locate a symbol in the right section. The
2772 symbol must either have a value of zero, or we must adjust
2773 the addend by the value of the symbol. FIXME: Write this
2774 when we need it. The old linker couldn't handle this anyhow. */
2776 *rel_hash_ptr = NULL;
2781 struct coff_link_hash_entry *h;
2783 h = ((struct coff_link_hash_entry *)
2784 bfd_wrapped_link_hash_lookup (output_bfd, finfo->info,
2785 link_order->u.reloc.p->u.name,
2786 FALSE, FALSE, TRUE));
2790 irel->r_symndx = h->indx;
2793 /* Set the index to -2 to force this symbol to get
2802 if (! ((*finfo->info->callbacks->unattached_reloc)
2803 (finfo->info, link_order->u.reloc.p->u.name, (bfd *) NULL,
2804 (asection *) NULL, (bfd_vma) 0)))
2810 /* FIXME: Is this always right? */
2811 irel->r_type = howto->type;
2813 /* r_size is only used on the RS/6000, which needs its own linker
2814 routines anyhow. r_extern is only used for ECOFF. */
2816 /* FIXME: What is the right value for r_offset? Is zero OK? */
2817 ++output_section->reloc_count;
2822 /* A basic reloc handling routine which may be used by processors with
2826 _bfd_coff_generic_relocate_section (bfd *output_bfd,
2827 struct bfd_link_info *info,
2829 asection *input_section,
2831 struct internal_reloc *relocs,
2832 struct internal_syment *syms,
2833 asection **sections)
2835 struct internal_reloc *rel;
2836 struct internal_reloc *relend;
2839 relend = rel + input_section->reloc_count;
2840 for (; rel < relend; rel++)
2843 struct coff_link_hash_entry *h;
2844 struct internal_syment *sym;
2847 reloc_howto_type *howto;
2848 bfd_reloc_status_type rstat;
2850 symndx = rel->r_symndx;
2858 || (unsigned long) symndx >= obj_raw_syment_count (input_bfd))
2860 (*_bfd_error_handler)
2861 ("%B: illegal symbol index %ld in relocs", input_bfd, symndx);
2866 h = obj_coff_sym_hashes (input_bfd)[symndx];
2867 sym = syms + symndx;
2870 /* COFF treats common symbols in one of two ways. Either the
2871 size of the symbol is included in the section contents, or it
2872 is not. We assume that the size is not included, and force
2873 the rtype_to_howto function to adjust the addend as needed. */
2874 if (sym != NULL && sym->n_scnum != 0)
2875 addend = - sym->n_value;
2879 howto = bfd_coff_rtype_to_howto (input_bfd, input_section, rel, h,
2884 /* If we are doing a relocatable link, then we can just ignore
2885 a PC relative reloc that is pcrel_offset. It will already
2886 have the correct value. If this is not a relocatable link,
2887 then we should ignore the symbol value. */
2888 if (howto->pc_relative && howto->pcrel_offset)
2890 if (info->relocatable)
2892 if (sym != NULL && sym->n_scnum != 0)
2893 addend += sym->n_value;
2904 sec = bfd_abs_section_ptr;
2909 sec = sections[symndx];
2910 val = (sec->output_section->vma
2911 + sec->output_offset
2913 if (! obj_pe (input_bfd))
2919 if (h->root.type == bfd_link_hash_defined
2920 || h->root.type == bfd_link_hash_defweak)
2922 /* Defined weak symbols are a GNU extension. */
2925 sec = h->root.u.def.section;
2926 val = (h->root.u.def.value
2927 + sec->output_section->vma
2928 + sec->output_offset);
2931 else if (h->root.type == bfd_link_hash_undefweak)
2933 if (h->class == C_NT_WEAK && h->numaux == 1)
2935 /* See _Microsoft Portable Executable and Common Object
2936 File Format Specification_, section 5.5.3.
2937 Note that weak symbols without aux records are a GNU
2939 FIXME: All weak externals are treated as having
2940 characteristic IMAGE_WEAK_EXTERN_SEARCH_NOLIBRARY (1).
2941 These behave as per SVR4 ABI: A library member
2942 will resolve a weak external only if a normal
2943 external causes the library member to be linked.
2944 See also linker.c: generic_link_check_archive_element. */
2946 struct coff_link_hash_entry *h2 =
2947 input_bfd->tdata.coff_obj_data->sym_hashes[
2948 h->aux->x_sym.x_tagndx.l];
2950 if (!h2 || h2->root.type == bfd_link_hash_undefined)
2952 sec = bfd_abs_section_ptr;
2957 sec = h2->root.u.def.section;
2958 val = h2->root.u.def.value
2959 + sec->output_section->vma + sec->output_offset;
2963 /* This is a GNU extension. */
2967 else if (! info->relocatable)
2969 if (! ((*info->callbacks->undefined_symbol)
2970 (info, h->root.root.string, input_bfd, input_section,
2971 rel->r_vaddr - input_section->vma, TRUE)))
2976 if (info->base_file)
2978 /* Emit a reloc if the backend thinks it needs it. */
2979 if (sym && pe_data (output_bfd)->in_reloc_p (output_bfd, howto))
2981 /* Relocation to a symbol in a section which isn't
2982 absolute. We output the address here to a file.
2983 This file is then read by dlltool when generating the
2984 reloc section. Note that the base file is not
2985 portable between systems. We write out a long here,
2986 and dlltool reads in a long. */
2987 long addr = (rel->r_vaddr
2988 - input_section->vma
2989 + input_section->output_offset
2990 + input_section->output_section->vma);
2991 if (coff_data (output_bfd)->pe)
2992 addr -= pe_data(output_bfd)->pe_opthdr.ImageBase;
2993 if (fwrite (&addr, 1, sizeof (long), (FILE *) info->base_file)
2996 bfd_set_error (bfd_error_system_call);
3002 rstat = _bfd_final_link_relocate (howto, input_bfd, input_section,
3004 rel->r_vaddr - input_section->vma,
3013 case bfd_reloc_outofrange:
3014 (*_bfd_error_handler)
3015 (_("%B: bad reloc address 0x%lx in section `%A'"),
3016 input_bfd, input_section, (unsigned long) rel->r_vaddr);
3018 case bfd_reloc_overflow:
3021 char buf[SYMNMLEN + 1];
3029 name = _bfd_coff_internal_syment_name (input_bfd, sym, buf);
3034 if (! ((*info->callbacks->reloc_overflow)
3035 (info, (h ? &h->root : NULL), name, howto->name,
3036 (bfd_vma) 0, input_bfd, input_section,
3037 rel->r_vaddr - input_section->vma)))