1 /* Support for the generic parts of COFF, for BFD.
2 Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
3 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
4 Free Software Foundation, Inc.
5 Written by Cygnus Support.
7 This file is part of BFD, the Binary File Descriptor library.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
22 MA 02110-1301, USA. */
24 /* Most of this hacked by Steve Chamberlain, sac@cygnus.com.
25 Split out of coffcode.h by Ian Taylor, ian@cygnus.com. */
27 /* This file contains COFF code that is not dependent on any
28 particular COFF target. There is only one version of this file in
29 libbfd.a, so no target specific code may be put in here. Or, to
32 ********** DO NOT PUT TARGET SPECIFIC CODE IN THIS FILE **********
34 If you need to add some target specific behaviour, add a new hook
35 function to bfd_coff_backend_data.
37 Some of these functions are also called by the ECOFF routines.
38 Those functions may not use any COFF specific information, such as
44 #include "coff/internal.h"
47 /* Take a section header read from a coff file (in HOST byte order),
48 and make a BFD "section" out of it. This is used by ECOFF. */
51 make_a_section_from_file (bfd *abfd,
52 struct internal_scnhdr *hdr,
53 unsigned int target_index)
55 asection *return_section;
57 bfd_boolean result = TRUE;
62 /* Handle long section names as in PE. On reading, we want to
63 accept long names if the format permits them at all, regardless
64 of the current state of the flag that dictates if we would generate
65 them in outputs; this construct checks if that is the case by
66 attempting to set the flag, without changing its state; the call
67 will fail for formats that do not support long names at all. */
68 if (bfd_coff_set_long_section_names (abfd, bfd_coff_long_section_names (abfd))
69 && hdr->s_name[0] == '/')
76 /* Flag that this BFD uses long names, even though the format might
77 expect them to be off by default. This won't directly affect the
78 format of any output BFD created from this one, but the information
79 can be used to decide what to do. */
80 bfd_coff_set_long_section_names (abfd, TRUE);
81 memcpy (buf, hdr->s_name + 1, SCNNMLEN - 1);
82 buf[SCNNMLEN - 1] = '\0';
83 strindex = strtol (buf, &p, 10);
84 if (*p == '\0' && strindex >= 0)
86 strings = _bfd_coff_read_string_table (abfd);
89 /* FIXME: For extra safety, we should make sure that
90 strindex does not run us past the end, but right now we
91 don't know the length of the string table. */
93 name = (char *) bfd_alloc (abfd,
94 (bfd_size_type) strlen (strings) + 1);
97 strcpy (name, strings);
103 /* Assorted wastage to null-terminate the name, thanks AT&T! */
104 name = (char *) bfd_alloc (abfd,
105 (bfd_size_type) sizeof (hdr->s_name) + 1);
108 strncpy (name, (char *) &hdr->s_name[0], sizeof (hdr->s_name));
109 name[sizeof (hdr->s_name)] = 0;
112 return_section = bfd_make_section_anyway (abfd, name);
113 if (return_section == NULL)
116 return_section->vma = hdr->s_vaddr;
117 return_section->lma = hdr->s_paddr;
118 return_section->size = hdr->s_size;
119 return_section->filepos = hdr->s_scnptr;
120 return_section->rel_filepos = hdr->s_relptr;
121 return_section->reloc_count = hdr->s_nreloc;
123 bfd_coff_set_alignment_hook (abfd, return_section, hdr);
125 return_section->line_filepos = hdr->s_lnnoptr;
127 return_section->lineno_count = hdr->s_nlnno;
128 return_section->userdata = NULL;
129 return_section->next = NULL;
130 return_section->target_index = target_index;
132 if (! bfd_coff_styp_to_sec_flags_hook (abfd, hdr, name, return_section,
136 return_section->flags = flags;
138 /* At least on i386-coff, the line number count for a shared library
139 section must be ignored. */
140 if ((return_section->flags & SEC_COFF_SHARED_LIBRARY) != 0)
141 return_section->lineno_count = 0;
143 if (hdr->s_nreloc != 0)
144 return_section->flags |= SEC_RELOC;
145 /* FIXME: should this check 'hdr->s_size > 0'. */
146 if (hdr->s_scnptr != 0)
147 return_section->flags |= SEC_HAS_CONTENTS;
152 /* Read in a COFF object and make it into a BFD. This is used by
155 static const bfd_target *
156 coff_real_object_p (bfd *abfd,
158 struct internal_filehdr *internal_f,
159 struct internal_aouthdr *internal_a)
161 flagword oflags = abfd->flags;
162 bfd_vma ostart = bfd_get_start_address (abfd);
165 bfd_size_type readsize; /* Length of file_info. */
167 char *external_sections;
169 if (!(internal_f->f_flags & F_RELFLG))
170 abfd->flags |= HAS_RELOC;
171 if ((internal_f->f_flags & F_EXEC))
172 abfd->flags |= EXEC_P;
173 if (!(internal_f->f_flags & F_LNNO))
174 abfd->flags |= HAS_LINENO;
175 if (!(internal_f->f_flags & F_LSYMS))
176 abfd->flags |= HAS_LOCALS;
178 /* FIXME: How can we set D_PAGED correctly? */
179 if ((internal_f->f_flags & F_EXEC) != 0)
180 abfd->flags |= D_PAGED;
182 bfd_get_symcount (abfd) = internal_f->f_nsyms;
183 if (internal_f->f_nsyms)
184 abfd->flags |= HAS_SYMS;
186 if (internal_a != (struct internal_aouthdr *) NULL)
187 bfd_get_start_address (abfd) = internal_a->entry;
189 bfd_get_start_address (abfd) = 0;
191 /* Set up the tdata area. ECOFF uses its own routine, and overrides
193 tdata_save = abfd->tdata.any;
194 tdata = bfd_coff_mkobject_hook (abfd, (void *) internal_f, (void *) internal_a);
198 scnhsz = bfd_coff_scnhsz (abfd);
199 readsize = (bfd_size_type) nscns * scnhsz;
200 external_sections = (char *) bfd_alloc (abfd, readsize);
201 if (!external_sections)
204 if (bfd_bread ((void *) external_sections, readsize, abfd) != readsize)
207 /* Set the arch/mach *before* swapping in sections; section header swapping
208 may depend on arch/mach info. */
209 if (! bfd_coff_set_arch_mach_hook (abfd, (void *) internal_f))
212 /* Now copy data as required; construct all asections etc. */
216 for (i = 0; i < nscns; i++)
218 struct internal_scnhdr tmp;
219 bfd_coff_swap_scnhdr_in (abfd,
220 (void *) (external_sections + i * scnhsz),
222 if (! make_a_section_from_file (abfd, &tmp, i + 1))
230 bfd_release (abfd, tdata);
232 abfd->tdata.any = tdata_save;
233 abfd->flags = oflags;
234 bfd_get_start_address (abfd) = ostart;
235 return (const bfd_target *) NULL;
238 /* Turn a COFF file into a BFD, but fail with bfd_error_wrong_format if it is
239 not a COFF file. This is also used by ECOFF. */
242 coff_object_p (bfd *abfd)
244 bfd_size_type filhsz;
245 bfd_size_type aoutsz;
248 struct internal_filehdr internal_f;
249 struct internal_aouthdr internal_a;
251 /* Figure out how much to read. */
252 filhsz = bfd_coff_filhsz (abfd);
253 aoutsz = bfd_coff_aoutsz (abfd);
255 filehdr = bfd_alloc (abfd, filhsz);
258 if (bfd_bread (filehdr, filhsz, abfd) != filhsz)
260 if (bfd_get_error () != bfd_error_system_call)
261 bfd_set_error (bfd_error_wrong_format);
262 bfd_release (abfd, filehdr);
265 bfd_coff_swap_filehdr_in (abfd, filehdr, &internal_f);
266 bfd_release (abfd, filehdr);
268 /* The XCOFF format has two sizes for the f_opthdr. SMALL_AOUTSZ
269 (less than aoutsz) used in object files and AOUTSZ (equal to
270 aoutsz) in executables. The bfd_coff_swap_aouthdr_in function
271 expects this header to be aoutsz bytes in length, so we use that
272 value in the call to bfd_alloc below. But we must be careful to
273 only read in f_opthdr bytes in the call to bfd_bread. We should
274 also attempt to catch corrupt or non-COFF binaries with a strange
275 value for f_opthdr. */
276 if (! bfd_coff_bad_format_hook (abfd, &internal_f)
277 || internal_f.f_opthdr > aoutsz)
279 bfd_set_error (bfd_error_wrong_format);
282 nscns = internal_f.f_nscns;
284 if (internal_f.f_opthdr)
288 opthdr = bfd_alloc (abfd, aoutsz);
291 if (bfd_bread (opthdr, (bfd_size_type) internal_f.f_opthdr, abfd)
292 != internal_f.f_opthdr)
294 bfd_release (abfd, opthdr);
297 bfd_coff_swap_aouthdr_in (abfd, opthdr, (void *) &internal_a);
298 bfd_release (abfd, opthdr);
301 return coff_real_object_p (abfd, nscns, &internal_f,
302 (internal_f.f_opthdr != 0
304 : (struct internal_aouthdr *) NULL));
307 /* Get the BFD section from a COFF symbol section number. */
310 coff_section_from_bfd_index (bfd *abfd, int section_index)
312 struct bfd_section *answer = abfd->sections;
314 if (section_index == N_ABS)
315 return bfd_abs_section_ptr;
316 if (section_index == N_UNDEF)
317 return bfd_und_section_ptr;
318 if (section_index == N_DEBUG)
319 return bfd_abs_section_ptr;
323 if (answer->target_index == section_index)
325 answer = answer->next;
328 /* We should not reach this point, but the SCO 3.2v4 /lib/libc_s.a
329 has a bad symbol table in biglitpow.o. */
330 return bfd_und_section_ptr;
333 /* Get the upper bound of a COFF symbol table. */
336 coff_get_symtab_upper_bound (bfd *abfd)
338 if (!bfd_coff_slurp_symbol_table (abfd))
341 return (bfd_get_symcount (abfd) + 1) * (sizeof (coff_symbol_type *));
344 /* Canonicalize a COFF symbol table. */
347 coff_canonicalize_symtab (bfd *abfd, asymbol **alocation)
349 unsigned int counter;
350 coff_symbol_type *symbase;
351 coff_symbol_type **location = (coff_symbol_type **) alocation;
353 if (!bfd_coff_slurp_symbol_table (abfd))
356 symbase = obj_symbols (abfd);
357 counter = bfd_get_symcount (abfd);
358 while (counter-- > 0)
359 *location++ = symbase++;
363 return bfd_get_symcount (abfd);
366 /* Get the name of a symbol. The caller must pass in a buffer of size
370 _bfd_coff_internal_syment_name (bfd *abfd,
371 const struct internal_syment *sym,
374 /* FIXME: It's not clear this will work correctly if sizeof
376 if (sym->_n._n_n._n_zeroes != 0
377 || sym->_n._n_n._n_offset == 0)
379 memcpy (buf, sym->_n._n_name, SYMNMLEN);
380 buf[SYMNMLEN] = '\0';
387 BFD_ASSERT (sym->_n._n_n._n_offset >= STRING_SIZE_SIZE);
388 strings = obj_coff_strings (abfd);
391 strings = _bfd_coff_read_string_table (abfd);
395 return strings + sym->_n._n_n._n_offset;
399 /* Read in and swap the relocs. This returns a buffer holding the
400 relocs for section SEC in file ABFD. If CACHE is TRUE and
401 INTERNAL_RELOCS is NULL, the relocs read in will be saved in case
402 the function is called again. If EXTERNAL_RELOCS is not NULL, it
403 is a buffer large enough to hold the unswapped relocs. If
404 INTERNAL_RELOCS is not NULL, it is a buffer large enough to hold
405 the swapped relocs. If REQUIRE_INTERNAL is TRUE, then the return
406 value must be INTERNAL_RELOCS. The function returns NULL on error. */
408 struct internal_reloc *
409 _bfd_coff_read_internal_relocs (bfd *abfd,
412 bfd_byte *external_relocs,
413 bfd_boolean require_internal,
414 struct internal_reloc *internal_relocs)
417 bfd_byte *free_external = NULL;
418 struct internal_reloc *free_internal = NULL;
421 struct internal_reloc *irel;
424 if (sec->reloc_count == 0)
425 return internal_relocs; /* Nothing to do. */
427 if (coff_section_data (abfd, sec) != NULL
428 && coff_section_data (abfd, sec)->relocs != NULL)
430 if (! require_internal)
431 return coff_section_data (abfd, sec)->relocs;
432 memcpy (internal_relocs, coff_section_data (abfd, sec)->relocs,
433 sec->reloc_count * sizeof (struct internal_reloc));
434 return internal_relocs;
437 relsz = bfd_coff_relsz (abfd);
439 amt = sec->reloc_count * relsz;
440 if (external_relocs == NULL)
442 free_external = (bfd_byte *) bfd_malloc (amt);
443 if (free_external == NULL)
445 external_relocs = free_external;
448 if (bfd_seek (abfd, sec->rel_filepos, SEEK_SET) != 0
449 || bfd_bread (external_relocs, amt, abfd) != amt)
452 if (internal_relocs == NULL)
454 amt = sec->reloc_count;
455 amt *= sizeof (struct internal_reloc);
456 free_internal = (struct internal_reloc *) bfd_malloc (amt);
457 if (free_internal == NULL)
459 internal_relocs = free_internal;
462 /* Swap in the relocs. */
463 erel = external_relocs;
464 erel_end = erel + relsz * sec->reloc_count;
465 irel = internal_relocs;
466 for (; erel < erel_end; erel += relsz, irel++)
467 bfd_coff_swap_reloc_in (abfd, (void *) erel, (void *) irel);
469 if (free_external != NULL)
471 free (free_external);
472 free_external = NULL;
475 if (cache && free_internal != NULL)
477 if (coff_section_data (abfd, sec) == NULL)
479 amt = sizeof (struct coff_section_tdata);
480 sec->used_by_bfd = bfd_zalloc (abfd, amt);
481 if (sec->used_by_bfd == NULL)
483 coff_section_data (abfd, sec)->contents = NULL;
485 coff_section_data (abfd, sec)->relocs = free_internal;
488 return internal_relocs;
491 if (free_external != NULL)
492 free (free_external);
493 if (free_internal != NULL)
494 free (free_internal);
498 /* Set lineno_count for the output sections of a COFF file. */
501 coff_count_linenumbers (bfd *abfd)
503 unsigned int limit = bfd_get_symcount (abfd);
511 /* This may be from the backend linker, in which case the
512 lineno_count in the sections is correct. */
513 for (s = abfd->sections; s != NULL; s = s->next)
514 total += s->lineno_count;
518 for (s = abfd->sections; s != NULL; s = s->next)
519 BFD_ASSERT (s->lineno_count == 0);
521 for (p = abfd->outsymbols, i = 0; i < limit; i++, p++)
523 asymbol *q_maybe = *p;
525 if (bfd_family_coff (bfd_asymbol_bfd (q_maybe)))
527 coff_symbol_type *q = coffsymbol (q_maybe);
529 /* The AIX 4.1 compiler can sometimes generate line numbers
530 attached to debugging symbols. We try to simply ignore
532 if (q->lineno != NULL
533 && q->symbol.section->owner != NULL)
535 /* This symbol has line numbers. Increment the owning
536 section's linenumber count. */
537 alent *l = q->lineno;
541 asection * sec = q->symbol.section->output_section;
543 /* Do not try to update fields in read-only sections. */
544 if (! bfd_is_const_section (sec))
545 sec->lineno_count ++;
550 while (l->line_number != 0);
558 /* Takes a bfd and a symbol, returns a pointer to the coff specific
559 area of the symbol if there is one. */
562 coff_symbol_from (bfd *ignore_abfd ATTRIBUTE_UNUSED,
565 if (!bfd_family_coff (bfd_asymbol_bfd (symbol)))
566 return (coff_symbol_type *) NULL;
568 if (bfd_asymbol_bfd (symbol)->tdata.coff_obj_data == (coff_data_type *) NULL)
569 return (coff_symbol_type *) NULL;
571 return (coff_symbol_type *) symbol;
575 fixup_symbol_value (bfd *abfd,
576 coff_symbol_type *coff_symbol_ptr,
577 struct internal_syment *syment)
579 /* Normalize the symbol flags. */
580 if (coff_symbol_ptr->symbol.section
581 && bfd_is_com_section (coff_symbol_ptr->symbol.section))
583 /* A common symbol is undefined with a value. */
584 syment->n_scnum = N_UNDEF;
585 syment->n_value = coff_symbol_ptr->symbol.value;
587 else if ((coff_symbol_ptr->symbol.flags & BSF_DEBUGGING) != 0
588 && (coff_symbol_ptr->symbol.flags & BSF_DEBUGGING_RELOC) == 0)
590 syment->n_value = coff_symbol_ptr->symbol.value;
592 else if (bfd_is_und_section (coff_symbol_ptr->symbol.section))
594 syment->n_scnum = N_UNDEF;
597 /* FIXME: Do we need to handle the absolute section here? */
600 if (coff_symbol_ptr->symbol.section)
603 coff_symbol_ptr->symbol.section->output_section->target_index;
605 syment->n_value = (coff_symbol_ptr->symbol.value
606 + coff_symbol_ptr->symbol.section->output_offset);
609 syment->n_value += (syment->n_sclass == C_STATLAB)
610 ? coff_symbol_ptr->symbol.section->output_section->lma
611 : coff_symbol_ptr->symbol.section->output_section->vma;
617 /* This can happen, but I don't know why yet (steve@cygnus.com) */
618 syment->n_scnum = N_ABS;
619 syment->n_value = coff_symbol_ptr->symbol.value;
624 /* Run through all the symbols in the symbol table and work out what
625 their indexes into the symbol table will be when output.
627 Coff requires that each C_FILE symbol points to the next one in the
628 chain, and that the last one points to the first external symbol. We
632 coff_renumber_symbols (bfd *bfd_ptr, int *first_undef)
634 unsigned int symbol_count = bfd_get_symcount (bfd_ptr);
635 asymbol **symbol_ptr_ptr = bfd_ptr->outsymbols;
636 unsigned int native_index = 0;
637 struct internal_syment *last_file = NULL;
638 unsigned int symbol_index;
640 /* COFF demands that undefined symbols come after all other symbols.
641 Since we don't need to impose this extra knowledge on all our
642 client programs, deal with that here. Sort the symbol table;
643 just move the undefined symbols to the end, leaving the rest
644 alone. The O'Reilly book says that defined global symbols come
645 at the end before the undefined symbols, so we do that here as
647 /* @@ Do we have some condition we could test for, so we don't always
648 have to do this? I don't think relocatability is quite right, but
649 I'm not certain. [raeburn:19920508.1711EST] */
655 amt = sizeof (asymbol *) * ((bfd_size_type) symbol_count + 1);
656 newsyms = (asymbol **) bfd_alloc (bfd_ptr, amt);
659 bfd_ptr->outsymbols = newsyms;
660 for (i = 0; i < symbol_count; i++)
661 if ((symbol_ptr_ptr[i]->flags & BSF_NOT_AT_END) != 0
662 || (!bfd_is_und_section (symbol_ptr_ptr[i]->section)
663 && !bfd_is_com_section (symbol_ptr_ptr[i]->section)
664 && ((symbol_ptr_ptr[i]->flags & BSF_FUNCTION) != 0
665 || ((symbol_ptr_ptr[i]->flags & (BSF_GLOBAL | BSF_WEAK))
667 *newsyms++ = symbol_ptr_ptr[i];
669 for (i = 0; i < symbol_count; i++)
670 if ((symbol_ptr_ptr[i]->flags & BSF_NOT_AT_END) == 0
671 && !bfd_is_und_section (symbol_ptr_ptr[i]->section)
672 && (bfd_is_com_section (symbol_ptr_ptr[i]->section)
673 || ((symbol_ptr_ptr[i]->flags & BSF_FUNCTION) == 0
674 && ((symbol_ptr_ptr[i]->flags & (BSF_GLOBAL | BSF_WEAK))
676 *newsyms++ = symbol_ptr_ptr[i];
678 *first_undef = newsyms - bfd_ptr->outsymbols;
680 for (i = 0; i < symbol_count; i++)
681 if ((symbol_ptr_ptr[i]->flags & BSF_NOT_AT_END) == 0
682 && bfd_is_und_section (symbol_ptr_ptr[i]->section))
683 *newsyms++ = symbol_ptr_ptr[i];
684 *newsyms = (asymbol *) NULL;
685 symbol_ptr_ptr = bfd_ptr->outsymbols;
688 for (symbol_index = 0; symbol_index < symbol_count; symbol_index++)
690 coff_symbol_type *coff_symbol_ptr = coff_symbol_from (bfd_ptr, symbol_ptr_ptr[symbol_index]);
691 symbol_ptr_ptr[symbol_index]->udata.i = symbol_index;
692 if (coff_symbol_ptr && coff_symbol_ptr->native)
694 combined_entry_type *s = coff_symbol_ptr->native;
697 if (s->u.syment.n_sclass == C_FILE)
699 if (last_file != NULL)
700 last_file->n_value = native_index;
701 last_file = &(s->u.syment);
704 /* Modify the symbol values according to their section and
706 fixup_symbol_value (bfd_ptr, coff_symbol_ptr, &(s->u.syment));
708 for (i = 0; i < s->u.syment.n_numaux + 1; i++)
709 s[i].offset = native_index++;
715 obj_conv_table_size (bfd_ptr) = native_index;
720 /* Run thorough the symbol table again, and fix it so that all
721 pointers to entries are changed to the entries' index in the output
725 coff_mangle_symbols (bfd *bfd_ptr)
727 unsigned int symbol_count = bfd_get_symcount (bfd_ptr);
728 asymbol **symbol_ptr_ptr = bfd_ptr->outsymbols;
729 unsigned int symbol_index;
731 for (symbol_index = 0; symbol_index < symbol_count; symbol_index++)
733 coff_symbol_type *coff_symbol_ptr =
734 coff_symbol_from (bfd_ptr, symbol_ptr_ptr[symbol_index]);
736 if (coff_symbol_ptr && coff_symbol_ptr->native)
739 combined_entry_type *s = coff_symbol_ptr->native;
743 /* FIXME: We should use a union here. */
744 s->u.syment.n_value =
745 (bfd_hostptr_t) ((combined_entry_type *)
746 ((bfd_hostptr_t) s->u.syment.n_value))->offset;
751 /* The value is the offset into the line number entries
752 for the symbol's section. On output, the symbol's
753 section should be N_DEBUG. */
754 s->u.syment.n_value =
755 (coff_symbol_ptr->symbol.section->output_section->line_filepos
756 + s->u.syment.n_value * bfd_coff_linesz (bfd_ptr));
757 coff_symbol_ptr->symbol.section =
758 coff_section_from_bfd_index (bfd_ptr, N_DEBUG);
759 BFD_ASSERT (coff_symbol_ptr->symbol.flags & BSF_DEBUGGING);
761 for (i = 0; i < s->u.syment.n_numaux; i++)
763 combined_entry_type *a = s + i + 1;
766 a->u.auxent.x_sym.x_tagndx.l =
767 a->u.auxent.x_sym.x_tagndx.p->offset;
772 a->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l =
773 a->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p->offset;
778 a->u.auxent.x_csect.x_scnlen.l =
779 a->u.auxent.x_csect.x_scnlen.p->offset;
788 coff_fix_symbol_name (bfd *abfd,
790 combined_entry_type *native,
791 bfd_size_type *string_size_p,
792 asection **debug_string_section_p,
793 bfd_size_type *debug_string_size_p)
795 unsigned int name_length;
796 union internal_auxent *auxent;
797 char *name = (char *) (symbol->name);
801 /* COFF symbols always have names, so we'll make one up. */
802 symbol->name = "strange";
803 name = (char *) symbol->name;
805 name_length = strlen (name);
807 if (native->u.syment.n_sclass == C_FILE
808 && native->u.syment.n_numaux > 0)
810 unsigned int filnmlen;
812 if (bfd_coff_force_symnames_in_strings (abfd))
814 native->u.syment._n._n_n._n_offset =
815 (*string_size_p + STRING_SIZE_SIZE);
816 native->u.syment._n._n_n._n_zeroes = 0;
817 *string_size_p += 6; /* strlen(".file") + 1 */
820 strncpy (native->u.syment._n._n_name, ".file", SYMNMLEN);
822 auxent = &(native + 1)->u.auxent;
824 filnmlen = bfd_coff_filnmlen (abfd);
826 if (bfd_coff_long_filenames (abfd))
828 if (name_length <= filnmlen)
829 strncpy (auxent->x_file.x_fname, name, filnmlen);
832 auxent->x_file.x_n.x_offset = *string_size_p + STRING_SIZE_SIZE;
833 auxent->x_file.x_n.x_zeroes = 0;
834 *string_size_p += name_length + 1;
839 strncpy (auxent->x_file.x_fname, name, filnmlen);
840 if (name_length > filnmlen)
841 name[filnmlen] = '\0';
846 if (name_length <= SYMNMLEN && !bfd_coff_force_symnames_in_strings (abfd))
847 /* This name will fit into the symbol neatly. */
848 strncpy (native->u.syment._n._n_name, symbol->name, SYMNMLEN);
850 else if (!bfd_coff_symname_in_debug (abfd, &native->u.syment))
852 native->u.syment._n._n_n._n_offset = (*string_size_p
854 native->u.syment._n._n_n._n_zeroes = 0;
855 *string_size_p += name_length + 1;
861 int prefix_len = bfd_coff_debug_string_prefix_length (abfd);
863 /* This name should be written into the .debug section. For
864 some reason each name is preceded by a two byte length
865 and also followed by a null byte. FIXME: We assume that
866 the .debug section has already been created, and that it
868 if (*debug_string_section_p == (asection *) NULL)
869 *debug_string_section_p = bfd_get_section_by_name (abfd, ".debug");
870 filepos = bfd_tell (abfd);
872 bfd_put_32 (abfd, (bfd_vma) (name_length + 1), buf);
874 bfd_put_16 (abfd, (bfd_vma) (name_length + 1), buf);
876 if (!bfd_set_section_contents (abfd,
877 *debug_string_section_p,
879 (file_ptr) *debug_string_size_p,
880 (bfd_size_type) prefix_len)
881 || !bfd_set_section_contents (abfd,
882 *debug_string_section_p,
883 (void *) symbol->name,
884 (file_ptr) (*debug_string_size_p
886 (bfd_size_type) name_length + 1))
888 if (bfd_seek (abfd, filepos, SEEK_SET) != 0)
890 native->u.syment._n._n_n._n_offset =
891 *debug_string_size_p + prefix_len;
892 native->u.syment._n._n_n._n_zeroes = 0;
893 *debug_string_size_p += name_length + 1 + prefix_len;
898 /* We need to keep track of the symbol index so that when we write out
899 the relocs we can get the index for a symbol. This method is a
902 #define set_index(symbol, idx) ((symbol)->udata.i = (idx))
904 /* Write a symbol out to a COFF file. */
907 coff_write_symbol (bfd *abfd,
909 combined_entry_type *native,
911 bfd_size_type *string_size_p,
912 asection **debug_string_section_p,
913 bfd_size_type *debug_string_size_p)
915 unsigned int numaux = native->u.syment.n_numaux;
916 int type = native->u.syment.n_type;
917 int n_sclass = (int) native->u.syment.n_sclass;
918 asection *output_section = symbol->section->output_section
919 ? symbol->section->output_section
922 bfd_size_type symesz;
924 if (native->u.syment.n_sclass == C_FILE)
925 symbol->flags |= BSF_DEBUGGING;
927 if (symbol->flags & BSF_DEBUGGING
928 && bfd_is_abs_section (symbol->section))
929 native->u.syment.n_scnum = N_DEBUG;
931 else if (bfd_is_abs_section (symbol->section))
932 native->u.syment.n_scnum = N_ABS;
934 else if (bfd_is_und_section (symbol->section))
935 native->u.syment.n_scnum = N_UNDEF;
938 native->u.syment.n_scnum =
939 output_section->target_index;
941 coff_fix_symbol_name (abfd, symbol, native, string_size_p,
942 debug_string_section_p, debug_string_size_p);
944 symesz = bfd_coff_symesz (abfd);
945 buf = bfd_alloc (abfd, symesz);
948 bfd_coff_swap_sym_out (abfd, &native->u.syment, buf);
949 if (bfd_bwrite (buf, symesz, abfd) != symesz)
951 bfd_release (abfd, buf);
953 if (native->u.syment.n_numaux > 0)
955 bfd_size_type auxesz;
958 auxesz = bfd_coff_auxesz (abfd);
959 buf = bfd_alloc (abfd, auxesz);
962 for (j = 0; j < native->u.syment.n_numaux; j++)
964 bfd_coff_swap_aux_out (abfd,
965 &((native + j + 1)->u.auxent),
966 type, n_sclass, (int) j,
967 native->u.syment.n_numaux,
969 if (bfd_bwrite (buf, auxesz, abfd) != auxesz)
972 bfd_release (abfd, buf);
975 /* Store the index for use when we write out the relocs. */
976 set_index (symbol, *written);
978 *written += numaux + 1;
982 /* Write out a symbol to a COFF file that does not come from a COFF
983 file originally. This symbol may have been created by the linker,
984 or we may be linking a non COFF file to a COFF file. */
987 coff_write_alien_symbol (bfd *abfd,
989 struct internal_syment *isym,
991 bfd_size_type *string_size_p,
992 asection **debug_string_section_p,
993 bfd_size_type *debug_string_size_p)
995 combined_entry_type *native;
996 combined_entry_type dummy[2];
997 asection *output_section = symbol->section->output_section
998 ? symbol->section->output_section
1000 struct bfd_link_info *link_info = coff_data (abfd)->link_info;
1003 if ((!link_info || link_info->strip_discarded)
1004 && !bfd_is_abs_section (symbol->section)
1005 && symbol->section->output_section == bfd_abs_section_ptr)
1009 memset (isym, 0, sizeof(*isym));
1013 native->u.syment.n_type = T_NULL;
1014 native->u.syment.n_flags = 0;
1015 native->u.syment.n_numaux = 0;
1016 if (bfd_is_und_section (symbol->section))
1018 native->u.syment.n_scnum = N_UNDEF;
1019 native->u.syment.n_value = symbol->value;
1021 else if (bfd_is_com_section (symbol->section))
1023 native->u.syment.n_scnum = N_UNDEF;
1024 native->u.syment.n_value = symbol->value;
1026 else if (symbol->flags & BSF_FILE)
1028 native->u.syment.n_scnum = N_DEBUG;
1029 native->u.syment.n_numaux = 1;
1031 else if (symbol->flags & BSF_DEBUGGING)
1033 /* There isn't much point to writing out a debugging symbol
1034 unless we are prepared to convert it into COFF debugging
1035 format. So, we just ignore them. We must clobber the symbol
1036 name to keep it from being put in the string table. */
1039 memset (isym, 0, sizeof(*isym));
1044 native->u.syment.n_scnum = output_section->target_index;
1045 native->u.syment.n_value = (symbol->value
1046 + symbol->section->output_offset);
1047 if (! obj_pe (abfd))
1048 native->u.syment.n_value += output_section->vma;
1050 /* Copy the any flags from the file header into the symbol.
1053 coff_symbol_type *c = coff_symbol_from (abfd, symbol);
1054 if (c != (coff_symbol_type *) NULL)
1055 native->u.syment.n_flags = bfd_asymbol_bfd (&c->symbol)->flags;
1059 native->u.syment.n_type = 0;
1060 if (symbol->flags & BSF_FILE)
1061 native->u.syment.n_sclass = C_FILE;
1062 else if (symbol->flags & BSF_LOCAL)
1063 native->u.syment.n_sclass = C_STAT;
1064 else if (symbol->flags & BSF_WEAK)
1065 native->u.syment.n_sclass = obj_pe (abfd) ? C_NT_WEAK : C_WEAKEXT;
1067 native->u.syment.n_sclass = C_EXT;
1069 ret = coff_write_symbol (abfd, symbol, native, written, string_size_p,
1070 debug_string_section_p, debug_string_size_p);
1072 *isym = native->u.syment;
1076 /* Write a native symbol to a COFF file. */
1079 coff_write_native_symbol (bfd *abfd,
1080 coff_symbol_type *symbol,
1082 bfd_size_type *string_size_p,
1083 asection **debug_string_section_p,
1084 bfd_size_type *debug_string_size_p)
1086 combined_entry_type *native = symbol->native;
1087 alent *lineno = symbol->lineno;
1088 struct bfd_link_info *link_info = coff_data (abfd)->link_info;
1090 if ((!link_info || link_info->strip_discarded)
1091 && !bfd_is_abs_section (symbol->symbol.section)
1092 && symbol->symbol.section->output_section == bfd_abs_section_ptr)
1094 symbol->symbol.name = "";
1098 /* If this symbol has an associated line number, we must store the
1099 symbol index in the line number field. We also tag the auxent to
1100 point to the right place in the lineno table. */
1101 if (lineno && !symbol->done_lineno && symbol->symbol.section->owner != NULL)
1103 unsigned int count = 0;
1105 lineno[count].u.offset = *written;
1106 if (native->u.syment.n_numaux)
1108 union internal_auxent *a = &((native + 1)->u.auxent);
1110 a->x_sym.x_fcnary.x_fcn.x_lnnoptr =
1111 symbol->symbol.section->output_section->moving_line_filepos;
1114 /* Count and relocate all other linenumbers. */
1116 while (lineno[count].line_number != 0)
1118 lineno[count].u.offset +=
1119 (symbol->symbol.section->output_section->vma
1120 + symbol->symbol.section->output_offset);
1123 symbol->done_lineno = TRUE;
1125 if (! bfd_is_const_section (symbol->symbol.section->output_section))
1126 symbol->symbol.section->output_section->moving_line_filepos +=
1127 count * bfd_coff_linesz (abfd);
1130 return coff_write_symbol (abfd, &(symbol->symbol), native, written,
1131 string_size_p, debug_string_section_p,
1132 debug_string_size_p);
1136 null_error_handler (const char * fmt ATTRIBUTE_UNUSED, ...)
1140 /* Write out the COFF symbols. */
1143 coff_write_symbols (bfd *abfd)
1145 bfd_size_type string_size;
1146 asection *debug_string_section;
1147 bfd_size_type debug_string_size;
1149 unsigned int limit = bfd_get_symcount (abfd);
1150 bfd_vma written = 0;
1154 debug_string_section = NULL;
1155 debug_string_size = 0;
1157 /* If this target supports long section names, they must be put into
1158 the string table. This is supported by PE. This code must
1159 handle section names just as they are handled in
1160 coff_write_object_contents. */
1161 if (bfd_coff_long_section_names (abfd))
1165 for (o = abfd->sections; o != NULL; o = o->next)
1169 len = strlen (o->name);
1171 string_size += len + 1;
1175 /* Seek to the right place. */
1176 if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0)
1179 /* Output all the symbols we have. */
1181 for (p = abfd->outsymbols, i = 0; i < limit; i++, p++)
1183 asymbol *symbol = *p;
1184 coff_symbol_type *c_symbol = coff_symbol_from (abfd, symbol);
1186 if (c_symbol == (coff_symbol_type *) NULL
1187 || c_symbol->native == (combined_entry_type *) NULL)
1189 if (!coff_write_alien_symbol (abfd, symbol, NULL, &written,
1190 &string_size, &debug_string_section,
1191 &debug_string_size))
1196 if (coff_backend_info (abfd)->_bfd_coff_classify_symbol != NULL)
1198 bfd_error_handler_type current_error_handler;
1199 enum coff_symbol_classification sym_class;
1200 unsigned char *n_sclass;
1202 /* Suppress error reporting by bfd_coff_classify_symbol.
1203 Error messages can be generated when we are processing a local
1204 symbol which has no associated section and we do not have to
1205 worry about this, all we need to know is that it is local. */
1206 current_error_handler = bfd_set_error_handler (null_error_handler);
1207 sym_class = bfd_coff_classify_symbol (abfd,
1208 &c_symbol->native->u.syment);
1209 (void) bfd_set_error_handler (current_error_handler);
1211 n_sclass = &c_symbol->native->u.syment.n_sclass;
1213 /* If the symbol class has been changed (eg objcopy/ld script/etc)
1214 we cannot retain the existing sclass from the original symbol.
1215 Weak symbols only have one valid sclass, so just set it always.
1216 If it is not local class and should be, set it C_STAT.
1217 If it is global and not classified as global, or if it is
1218 weak (which is also classified as global), set it C_EXT. */
1220 if (symbol->flags & BSF_WEAK)
1221 *n_sclass = obj_pe (abfd) ? C_NT_WEAK : C_WEAKEXT;
1222 else if (symbol->flags & BSF_LOCAL && sym_class != COFF_SYMBOL_LOCAL)
1224 else if (symbol->flags & BSF_GLOBAL
1225 && (sym_class != COFF_SYMBOL_GLOBAL
1227 || *n_sclass == C_NT_WEAK
1229 || *n_sclass == C_WEAKEXT))
1230 c_symbol->native->u.syment.n_sclass = C_EXT;
1233 if (!coff_write_native_symbol (abfd, c_symbol, &written,
1234 &string_size, &debug_string_section,
1235 &debug_string_size))
1240 obj_raw_syment_count (abfd) = written;
1242 /* Now write out strings. */
1243 if (string_size != 0)
1245 unsigned int size = string_size + STRING_SIZE_SIZE;
1246 bfd_byte buffer[STRING_SIZE_SIZE];
1248 #if STRING_SIZE_SIZE == 4
1249 H_PUT_32 (abfd, size, buffer);
1251 #error Change H_PUT_32
1253 if (bfd_bwrite ((void *) buffer, (bfd_size_type) sizeof (buffer), abfd)
1257 /* Handle long section names. This code must handle section
1258 names just as they are handled in coff_write_object_contents. */
1259 if (bfd_coff_long_section_names (abfd))
1263 for (o = abfd->sections; o != NULL; o = o->next)
1267 len = strlen (o->name);
1270 if (bfd_bwrite (o->name, (bfd_size_type) (len + 1), abfd)
1277 for (p = abfd->outsymbols, i = 0;
1282 size_t name_length = strlen (q->name);
1283 coff_symbol_type *c_symbol = coff_symbol_from (abfd, q);
1286 /* Figure out whether the symbol name should go in the string
1287 table. Symbol names that are short enough are stored
1288 directly in the syment structure. File names permit a
1289 different, longer, length in the syment structure. On
1290 XCOFF, some symbol names are stored in the .debug section
1291 rather than in the string table. */
1293 if (c_symbol == NULL
1294 || c_symbol->native == NULL)
1295 /* This is not a COFF symbol, so it certainly is not a
1296 file name, nor does it go in the .debug section. */
1297 maxlen = bfd_coff_force_symnames_in_strings (abfd) ? 0 : SYMNMLEN;
1299 else if (bfd_coff_symname_in_debug (abfd,
1300 &c_symbol->native->u.syment))
1301 /* This symbol name is in the XCOFF .debug section.
1302 Don't write it into the string table. */
1303 maxlen = name_length;
1305 else if (c_symbol->native->u.syment.n_sclass == C_FILE
1306 && c_symbol->native->u.syment.n_numaux > 0)
1308 if (bfd_coff_force_symnames_in_strings (abfd))
1310 if (bfd_bwrite (".file", (bfd_size_type) 6, abfd) != 6)
1313 maxlen = bfd_coff_filnmlen (abfd);
1316 maxlen = bfd_coff_force_symnames_in_strings (abfd) ? 0 : SYMNMLEN;
1318 if (name_length > maxlen)
1320 if (bfd_bwrite ((void *) (q->name), (bfd_size_type) name_length + 1,
1321 abfd) != name_length + 1)
1328 /* We would normally not write anything here, but we'll write
1329 out 4 so that any stupid coff reader which tries to read the
1330 string table even when there isn't one won't croak. */
1331 unsigned int size = STRING_SIZE_SIZE;
1332 bfd_byte buffer[STRING_SIZE_SIZE];
1334 #if STRING_SIZE_SIZE == 4
1335 H_PUT_32 (abfd, size, buffer);
1337 #error Change H_PUT_32
1339 if (bfd_bwrite ((void *) buffer, (bfd_size_type) STRING_SIZE_SIZE, abfd)
1340 != STRING_SIZE_SIZE)
1344 /* Make sure the .debug section was created to be the correct size.
1345 We should create it ourselves on the fly, but we don't because
1346 BFD won't let us write to any section until we know how large all
1347 the sections are. We could still do it by making another pass
1348 over the symbols. FIXME. */
1349 BFD_ASSERT (debug_string_size == 0
1350 || (debug_string_section != (asection *) NULL
1351 && (BFD_ALIGN (debug_string_size,
1352 1 << debug_string_section->alignment_power)
1353 == debug_string_section->size)));
1359 coff_write_linenumbers (bfd *abfd)
1362 bfd_size_type linesz;
1365 linesz = bfd_coff_linesz (abfd);
1366 buff = bfd_alloc (abfd, linesz);
1369 for (s = abfd->sections; s != (asection *) NULL; s = s->next)
1371 if (s->lineno_count)
1373 asymbol **q = abfd->outsymbols;
1374 if (bfd_seek (abfd, s->line_filepos, SEEK_SET) != 0)
1376 /* Find all the linenumbers in this section. */
1380 if (p->section->output_section == s)
1383 BFD_SEND (bfd_asymbol_bfd (p), _get_lineno,
1384 (bfd_asymbol_bfd (p), p));
1387 /* Found a linenumber entry, output. */
1388 struct internal_lineno out;
1389 memset ((void *) & out, 0, sizeof (out));
1391 out.l_addr.l_symndx = l->u.offset;
1392 bfd_coff_swap_lineno_out (abfd, &out, buff);
1393 if (bfd_bwrite (buff, (bfd_size_type) linesz, abfd)
1397 while (l->line_number)
1399 out.l_lnno = l->line_number;
1400 out.l_addr.l_symndx = l->u.offset;
1401 bfd_coff_swap_lineno_out (abfd, &out, buff);
1402 if (bfd_bwrite (buff, (bfd_size_type) linesz, abfd)
1413 bfd_release (abfd, buff);
1418 coff_get_lineno (bfd *ignore_abfd ATTRIBUTE_UNUSED, asymbol *symbol)
1420 return coffsymbol (symbol)->lineno;
1423 /* This function transforms the offsets into the symbol table into
1424 pointers to syments. */
1427 coff_pointerize_aux (bfd *abfd,
1428 combined_entry_type *table_base,
1429 combined_entry_type *symbol,
1430 unsigned int indaux,
1431 combined_entry_type *auxent)
1433 unsigned int type = symbol->u.syment.n_type;
1434 unsigned int n_sclass = symbol->u.syment.n_sclass;
1436 if (coff_backend_info (abfd)->_bfd_coff_pointerize_aux_hook)
1438 if ((*coff_backend_info (abfd)->_bfd_coff_pointerize_aux_hook)
1439 (abfd, table_base, symbol, indaux, auxent))
1443 /* Don't bother if this is a file or a section. */
1444 if (n_sclass == C_STAT && type == T_NULL)
1446 if (n_sclass == C_FILE)
1449 /* Otherwise patch up. */
1450 #define N_TMASK coff_data (abfd)->local_n_tmask
1451 #define N_BTSHFT coff_data (abfd)->local_n_btshft
1453 if ((ISFCN (type) || ISTAG (n_sclass) || n_sclass == C_BLOCK
1454 || n_sclass == C_FCN)
1455 && auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l > 0)
1457 auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p =
1458 table_base + auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l;
1459 auxent->fix_end = 1;
1461 /* A negative tagndx is meaningless, but the SCO 3.2v4 cc can
1462 generate one, so we must be careful to ignore it. */
1463 if (auxent->u.auxent.x_sym.x_tagndx.l > 0)
1465 auxent->u.auxent.x_sym.x_tagndx.p =
1466 table_base + auxent->u.auxent.x_sym.x_tagndx.l;
1467 auxent->fix_tag = 1;
1471 /* Allocate space for the ".debug" section, and read it.
1472 We did not read the debug section until now, because
1473 we didn't want to go to the trouble until someone needed it. */
1476 build_debug_section (bfd *abfd)
1478 char *debug_section;
1480 bfd_size_type sec_size;
1482 asection *sect = bfd_get_section_by_name (abfd, ".debug");
1486 bfd_set_error (bfd_error_no_debug_section);
1490 sec_size = sect->size;
1491 debug_section = (char *) bfd_alloc (abfd, sec_size);
1492 if (debug_section == NULL)
1495 /* Seek to the beginning of the `.debug' section and read it.
1496 Save the current position first; it is needed by our caller.
1497 Then read debug section and reset the file pointer. */
1499 position = bfd_tell (abfd);
1500 if (bfd_seek (abfd, sect->filepos, SEEK_SET) != 0
1501 || bfd_bread (debug_section, sec_size, abfd) != sec_size
1502 || bfd_seek (abfd, position, SEEK_SET) != 0)
1504 return debug_section;
1507 /* Return a pointer to a malloc'd copy of 'name'. 'name' may not be
1508 \0-terminated, but will not exceed 'maxlen' characters. The copy *will*
1509 be \0-terminated. */
1512 copy_name (bfd *abfd, char *name, size_t maxlen)
1517 for (len = 0; len < maxlen; ++len)
1518 if (name[len] == '\0')
1521 if ((newname = (char *) bfd_alloc (abfd, (bfd_size_type) len + 1)) == NULL)
1524 strncpy (newname, name, len);
1525 newname[len] = '\0';
1529 /* Read in the external symbols. */
1532 _bfd_coff_get_external_symbols (bfd *abfd)
1534 bfd_size_type symesz;
1538 if (obj_coff_external_syms (abfd) != NULL)
1541 symesz = bfd_coff_symesz (abfd);
1543 size = obj_raw_syment_count (abfd) * symesz;
1547 syms = bfd_malloc (size);
1551 if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0
1552 || bfd_bread (syms, size, abfd) != size)
1559 obj_coff_external_syms (abfd) = syms;
1564 /* Read in the external strings. The strings are not loaded until
1565 they are needed. This is because we have no simple way of
1566 detecting a missing string table in an archive. */
1569 _bfd_coff_read_string_table (bfd *abfd)
1571 char extstrsize[STRING_SIZE_SIZE];
1572 bfd_size_type strsize;
1576 if (obj_coff_strings (abfd) != NULL)
1577 return obj_coff_strings (abfd);
1579 if (obj_sym_filepos (abfd) == 0)
1581 bfd_set_error (bfd_error_no_symbols);
1585 pos = obj_sym_filepos (abfd);
1586 pos += obj_raw_syment_count (abfd) * bfd_coff_symesz (abfd);
1587 if (bfd_seek (abfd, pos, SEEK_SET) != 0)
1590 if (bfd_bread (extstrsize, (bfd_size_type) sizeof extstrsize, abfd)
1591 != sizeof extstrsize)
1593 if (bfd_get_error () != bfd_error_file_truncated)
1596 /* There is no string table. */
1597 strsize = STRING_SIZE_SIZE;
1601 #if STRING_SIZE_SIZE == 4
1602 strsize = H_GET_32 (abfd, extstrsize);
1604 #error Change H_GET_32
1608 if (strsize < STRING_SIZE_SIZE)
1610 (*_bfd_error_handler)
1611 (_("%B: bad string table size %lu"), abfd, (unsigned long) strsize);
1612 bfd_set_error (bfd_error_bad_value);
1616 strings = (char *) bfd_malloc (strsize);
1617 if (strings == NULL)
1620 if (bfd_bread (strings + STRING_SIZE_SIZE, strsize - STRING_SIZE_SIZE, abfd)
1621 != strsize - STRING_SIZE_SIZE)
1627 obj_coff_strings (abfd) = strings;
1632 /* Free up the external symbols and strings read from a COFF file. */
1635 _bfd_coff_free_symbols (bfd *abfd)
1637 if (obj_coff_external_syms (abfd) != NULL
1638 && ! obj_coff_keep_syms (abfd))
1640 free (obj_coff_external_syms (abfd));
1641 obj_coff_external_syms (abfd) = NULL;
1643 if (obj_coff_strings (abfd) != NULL
1644 && ! obj_coff_keep_strings (abfd))
1646 free (obj_coff_strings (abfd));
1647 obj_coff_strings (abfd) = NULL;
1652 /* Read a symbol table into freshly bfd_allocated memory, swap it, and
1653 knit the symbol names into a normalized form. By normalized here I
1654 mean that all symbols have an n_offset pointer that points to a null-
1655 terminated string. */
1657 combined_entry_type *
1658 coff_get_normalized_symtab (bfd *abfd)
1660 combined_entry_type *internal;
1661 combined_entry_type *internal_ptr;
1662 combined_entry_type *symbol_ptr;
1663 combined_entry_type *internal_end;
1667 const char *string_table = NULL;
1668 char *debug_section = NULL;
1671 if (obj_raw_syments (abfd) != NULL)
1672 return obj_raw_syments (abfd);
1674 size = obj_raw_syment_count (abfd) * sizeof (combined_entry_type);
1675 internal = (combined_entry_type *) bfd_zalloc (abfd, size);
1676 if (internal == NULL && size != 0)
1678 internal_end = internal + obj_raw_syment_count (abfd);
1680 if (! _bfd_coff_get_external_symbols (abfd))
1683 raw_src = (char *) obj_coff_external_syms (abfd);
1685 /* Mark the end of the symbols. */
1686 symesz = bfd_coff_symesz (abfd);
1687 raw_end = (char *) raw_src + obj_raw_syment_count (abfd) * symesz;
1689 /* FIXME SOMEDAY. A string table size of zero is very weird, but
1690 probably possible. If one shows up, it will probably kill us. */
1692 /* Swap all the raw entries. */
1693 for (internal_ptr = internal;
1695 raw_src += symesz, internal_ptr++)
1699 bfd_coff_swap_sym_in (abfd, (void *) raw_src,
1700 (void *) & internal_ptr->u.syment);
1701 symbol_ptr = internal_ptr;
1704 i < symbol_ptr->u.syment.n_numaux;
1709 bfd_coff_swap_aux_in (abfd, (void *) raw_src,
1710 symbol_ptr->u.syment.n_type,
1711 symbol_ptr->u.syment.n_sclass,
1712 (int) i, symbol_ptr->u.syment.n_numaux,
1713 &(internal_ptr->u.auxent));
1714 coff_pointerize_aux (abfd, internal, symbol_ptr, i,
1719 /* Free the raw symbols, but not the strings (if we have them). */
1720 obj_coff_keep_strings (abfd) = TRUE;
1721 if (! _bfd_coff_free_symbols (abfd))
1724 for (internal_ptr = internal; internal_ptr < internal_end;
1727 if (internal_ptr->u.syment.n_sclass == C_FILE
1728 && internal_ptr->u.syment.n_numaux > 0)
1730 /* Make a file symbol point to the name in the auxent, since
1731 the text ".file" is redundant. */
1732 if ((internal_ptr + 1)->u.auxent.x_file.x_n.x_zeroes == 0)
1734 /* The filename is a long one, point into the string table. */
1735 if (string_table == NULL)
1737 string_table = _bfd_coff_read_string_table (abfd);
1738 if (string_table == NULL)
1742 internal_ptr->u.syment._n._n_n._n_offset =
1745 + (internal_ptr + 1)->u.auxent.x_file.x_n.x_offset));
1749 /* Ordinary short filename, put into memory anyway. The
1750 Microsoft PE tools sometimes store a filename in
1751 multiple AUX entries. */
1752 if (internal_ptr->u.syment.n_numaux > 1
1753 && coff_data (abfd)->pe)
1754 internal_ptr->u.syment._n._n_n._n_offset =
1757 (internal_ptr + 1)->u.auxent.x_file.x_fname,
1758 internal_ptr->u.syment.n_numaux * symesz));
1760 internal_ptr->u.syment._n._n_n._n_offset =
1763 (internal_ptr + 1)->u.auxent.x_file.x_fname,
1764 (size_t) bfd_coff_filnmlen (abfd)));
1769 if (internal_ptr->u.syment._n._n_n._n_zeroes != 0)
1771 /* This is a "short" name. Make it long. */
1775 /* Find the length of this string without walking into memory
1777 for (i = 0; i < 8; ++i)
1778 if (internal_ptr->u.syment._n._n_name[i] == '\0')
1781 newstring = (char *) bfd_zalloc (abfd, (bfd_size_type) (i + 1));
1782 if (newstring == NULL)
1784 strncpy (newstring, internal_ptr->u.syment._n._n_name, i);
1785 internal_ptr->u.syment._n._n_n._n_offset = (bfd_hostptr_t) newstring;
1786 internal_ptr->u.syment._n._n_n._n_zeroes = 0;
1788 else if (internal_ptr->u.syment._n._n_n._n_offset == 0)
1789 internal_ptr->u.syment._n._n_n._n_offset = (bfd_hostptr_t) "";
1790 else if (!bfd_coff_symname_in_debug (abfd, &internal_ptr->u.syment))
1792 /* Long name already. Point symbol at the string in the
1794 if (string_table == NULL)
1796 string_table = _bfd_coff_read_string_table (abfd);
1797 if (string_table == NULL)
1800 internal_ptr->u.syment._n._n_n._n_offset =
1803 + internal_ptr->u.syment._n._n_n._n_offset));
1807 /* Long name in debug section. Very similar. */
1808 if (debug_section == NULL)
1809 debug_section = build_debug_section (abfd);
1810 internal_ptr->u.syment._n._n_n._n_offset = (bfd_hostptr_t)
1811 (debug_section + internal_ptr->u.syment._n._n_n._n_offset);
1814 internal_ptr += internal_ptr->u.syment.n_numaux;
1817 obj_raw_syments (abfd) = internal;
1818 BFD_ASSERT (obj_raw_syment_count (abfd)
1819 == (unsigned int) (internal_ptr - internal));
1825 coff_get_reloc_upper_bound (bfd *abfd, sec_ptr asect)
1827 if (bfd_get_format (abfd) != bfd_object)
1829 bfd_set_error (bfd_error_invalid_operation);
1832 return (asect->reloc_count + 1) * sizeof (arelent *);
1836 coff_make_empty_symbol (bfd *abfd)
1838 bfd_size_type amt = sizeof (coff_symbol_type);
1839 coff_symbol_type *new_symbol = (coff_symbol_type *) bfd_zalloc (abfd, amt);
1841 if (new_symbol == NULL)
1843 new_symbol->symbol.section = 0;
1844 new_symbol->native = 0;
1845 new_symbol->lineno = NULL;
1846 new_symbol->done_lineno = FALSE;
1847 new_symbol->symbol.the_bfd = abfd;
1849 return & new_symbol->symbol;
1852 /* Make a debugging symbol. */
1855 coff_bfd_make_debug_symbol (bfd *abfd,
1856 void * ptr ATTRIBUTE_UNUSED,
1857 unsigned long sz ATTRIBUTE_UNUSED)
1859 bfd_size_type amt = sizeof (coff_symbol_type);
1860 coff_symbol_type *new_symbol = (coff_symbol_type *) bfd_alloc (abfd, amt);
1862 if (new_symbol == NULL)
1864 /* @@ The 10 is a guess at a plausible maximum number of aux entries
1865 (but shouldn't be a constant). */
1866 amt = sizeof (combined_entry_type) * 10;
1867 new_symbol->native = (combined_entry_type *) bfd_zalloc (abfd, amt);
1868 if (!new_symbol->native)
1870 new_symbol->symbol.section = bfd_abs_section_ptr;
1871 new_symbol->symbol.flags = BSF_DEBUGGING;
1872 new_symbol->lineno = NULL;
1873 new_symbol->done_lineno = FALSE;
1874 new_symbol->symbol.the_bfd = abfd;
1876 return & new_symbol->symbol;
1880 coff_get_symbol_info (bfd *abfd, asymbol *symbol, symbol_info *ret)
1882 bfd_symbol_info (symbol, ret);
1884 if (coffsymbol (symbol)->native != NULL
1885 && coffsymbol (symbol)->native->fix_value)
1886 ret->value = coffsymbol (symbol)->native->u.syment.n_value -
1887 (bfd_hostptr_t) obj_raw_syments (abfd);
1890 /* Return the COFF syment for a symbol. */
1893 bfd_coff_get_syment (bfd *abfd,
1895 struct internal_syment *psyment)
1897 coff_symbol_type *csym;
1899 csym = coff_symbol_from (abfd, symbol);
1900 if (csym == NULL || csym->native == NULL)
1902 bfd_set_error (bfd_error_invalid_operation);
1906 *psyment = csym->native->u.syment;
1908 if (csym->native->fix_value)
1909 psyment->n_value = psyment->n_value -
1910 (bfd_hostptr_t) obj_raw_syments (abfd);
1912 /* FIXME: We should handle fix_line here. */
1917 /* Return the COFF auxent for a symbol. */
1920 bfd_coff_get_auxent (bfd *abfd,
1923 union internal_auxent *pauxent)
1925 coff_symbol_type *csym;
1926 combined_entry_type *ent;
1928 csym = coff_symbol_from (abfd, symbol);
1931 || csym->native == NULL
1932 || indx >= csym->native->u.syment.n_numaux)
1934 bfd_set_error (bfd_error_invalid_operation);
1938 ent = csym->native + indx + 1;
1940 *pauxent = ent->u.auxent;
1943 pauxent->x_sym.x_tagndx.l =
1944 ((combined_entry_type *) pauxent->x_sym.x_tagndx.p
1945 - obj_raw_syments (abfd));
1948 pauxent->x_sym.x_fcnary.x_fcn.x_endndx.l =
1949 ((combined_entry_type *) pauxent->x_sym.x_fcnary.x_fcn.x_endndx.p
1950 - obj_raw_syments (abfd));
1952 if (ent->fix_scnlen)
1953 pauxent->x_csect.x_scnlen.l =
1954 ((combined_entry_type *) pauxent->x_csect.x_scnlen.p
1955 - obj_raw_syments (abfd));
1960 /* Print out information about COFF symbol. */
1963 coff_print_symbol (bfd *abfd,
1966 bfd_print_symbol_type how)
1968 FILE * file = (FILE *) filep;
1972 case bfd_print_symbol_name:
1973 fprintf (file, "%s", symbol->name);
1976 case bfd_print_symbol_more:
1977 fprintf (file, "coff %s %s",
1978 coffsymbol (symbol)->native ? "n" : "g",
1979 coffsymbol (symbol)->lineno ? "l" : " ");
1982 case bfd_print_symbol_all:
1983 if (coffsymbol (symbol)->native)
1987 combined_entry_type *combined = coffsymbol (symbol)->native;
1988 combined_entry_type *root = obj_raw_syments (abfd);
1989 struct lineno_cache_entry *l = coffsymbol (symbol)->lineno;
1991 fprintf (file, "[%3ld]", (long) (combined - root));
1993 if (! combined->fix_value)
1994 val = (bfd_vma) combined->u.syment.n_value;
1996 val = combined->u.syment.n_value - (bfd_hostptr_t) root;
1998 fprintf (file, "(sec %2d)(fl 0x%02x)(ty %3x)(scl %3d) (nx %d) 0x",
1999 combined->u.syment.n_scnum,
2000 combined->u.syment.n_flags,
2001 combined->u.syment.n_type,
2002 combined->u.syment.n_sclass,
2003 combined->u.syment.n_numaux);
2004 bfd_fprintf_vma (abfd, file, val);
2005 fprintf (file, " %s", symbol->name);
2007 for (aux = 0; aux < combined->u.syment.n_numaux; aux++)
2009 combined_entry_type *auxp = combined + aux + 1;
2013 tagndx = auxp->u.auxent.x_sym.x_tagndx.p - root;
2015 tagndx = auxp->u.auxent.x_sym.x_tagndx.l;
2017 fprintf (file, "\n");
2019 if (bfd_coff_print_aux (abfd, file, root, combined, auxp, aux))
2022 switch (combined->u.syment.n_sclass)
2025 fprintf (file, "File ");
2029 if (combined->u.syment.n_type == T_NULL)
2030 /* Probably a section symbol ? */
2032 fprintf (file, "AUX scnlen 0x%lx nreloc %d nlnno %d",
2033 (unsigned long) auxp->u.auxent.x_scn.x_scnlen,
2034 auxp->u.auxent.x_scn.x_nreloc,
2035 auxp->u.auxent.x_scn.x_nlinno);
2036 if (auxp->u.auxent.x_scn.x_checksum != 0
2037 || auxp->u.auxent.x_scn.x_associated != 0
2038 || auxp->u.auxent.x_scn.x_comdat != 0)
2039 fprintf (file, " checksum 0x%lx assoc %d comdat %d",
2040 auxp->u.auxent.x_scn.x_checksum,
2041 auxp->u.auxent.x_scn.x_associated,
2042 auxp->u.auxent.x_scn.x_comdat);
2045 /* Otherwise fall through. */
2048 if (ISFCN (combined->u.syment.n_type))
2053 next = (auxp->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p
2056 next = auxp->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l;
2057 llnos = auxp->u.auxent.x_sym.x_fcnary.x_fcn.x_lnnoptr;
2059 "AUX tagndx %ld ttlsiz 0x%lx lnnos %ld next %ld",
2061 (unsigned long) auxp->u.auxent.x_sym.x_misc.x_fsize,
2065 /* Otherwise fall through. */
2067 fprintf (file, "AUX lnno %d size 0x%x tagndx %ld",
2068 auxp->u.auxent.x_sym.x_misc.x_lnsz.x_lnno,
2069 auxp->u.auxent.x_sym.x_misc.x_lnsz.x_size,
2072 fprintf (file, " endndx %ld",
2074 (auxp->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p
2082 fprintf (file, "\n%s :", l->u.sym->name);
2084 while (l->line_number)
2086 fprintf (file, "\n%4d : ", l->line_number);
2087 bfd_fprintf_vma (abfd, file, l->u.offset + symbol->section->vma);
2094 bfd_print_symbol_vandf (abfd, (void *) file, symbol);
2095 fprintf (file, " %-5s %s %s %s",
2096 symbol->section->name,
2097 coffsymbol (symbol)->native ? "n" : "g",
2098 coffsymbol (symbol)->lineno ? "l" : " ",
2104 /* Return whether a symbol name implies a local symbol. In COFF,
2105 local symbols generally start with ``.L''. Most targets use this
2106 function for the is_local_label_name entry point, but some may
2110 _bfd_coff_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED,
2113 return name[0] == '.' && name[1] == 'L';
2116 /* Provided a BFD, a section and an offset (in bytes, not octets) into the
2117 section, calculate and return the name of the source file and the line
2118 nearest to the wanted location. */
2121 coff_find_nearest_line_with_names (bfd *abfd,
2122 const struct dwarf_debug_section *debug_sections,
2126 const char **filename_ptr,
2127 const char **functionname_ptr,
2128 unsigned int *line_ptr)
2132 unsigned int line_base;
2133 coff_data_type *cof = coff_data (abfd);
2134 /* Run through the raw syments if available. */
2135 combined_entry_type *p;
2136 combined_entry_type *pend;
2138 struct coff_section_tdata *sec_data;
2141 /* Before looking through the symbol table, try to use a .stab
2142 section to find the information. */
2143 if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset,
2144 &found, filename_ptr,
2145 functionname_ptr, line_ptr,
2146 &coff_data(abfd)->line_info))
2152 /* Also try examining DWARF2 debugging information. */
2153 if (_bfd_dwarf2_find_nearest_line (abfd, debug_sections,
2154 section, symbols, offset,
2155 filename_ptr, functionname_ptr,
2157 &coff_data(abfd)->dwarf2_find_line_info))
2161 *functionname_ptr = 0;
2164 /* Don't try and find line numbers in a non coff file. */
2165 if (!bfd_family_coff (abfd))
2171 /* Find the first C_FILE symbol. */
2172 p = cof->raw_syments;
2176 pend = p + cof->raw_syment_count;
2179 if (p->u.syment.n_sclass == C_FILE)
2181 p += 1 + p->u.syment.n_numaux;
2189 /* Look through the C_FILE symbols to find the best one. */
2190 sec_vma = bfd_get_section_vma (abfd, section);
2191 *filename_ptr = (char *) p->u.syment._n._n_n._n_offset;
2192 maxdiff = (bfd_vma) 0 - (bfd_vma) 1;
2196 combined_entry_type *p2;
2198 for (p2 = p + 1 + p->u.syment.n_numaux;
2200 p2 += 1 + p2->u.syment.n_numaux)
2202 if (p2->u.syment.n_scnum > 0
2204 == coff_section_from_bfd_index (abfd,
2205 p2->u.syment.n_scnum)))
2207 if (p2->u.syment.n_sclass == C_FILE)
2214 file_addr = (bfd_vma) p2->u.syment.n_value;
2215 /* PR 11512: Include the section address of the function name symbol. */
2216 if (p2->u.syment.n_scnum > 0)
2217 file_addr += coff_section_from_bfd_index (abfd,
2218 p2->u.syment.n_scnum)->vma;
2219 /* We use <= MAXDIFF here so that if we get a zero length
2220 file, we actually use the next file entry. */
2222 && offset + sec_vma >= file_addr
2223 && offset + sec_vma - file_addr <= maxdiff)
2225 *filename_ptr = (char *) p->u.syment._n._n_n._n_offset;
2226 maxdiff = offset + sec_vma - p2->u.syment.n_value;
2229 /* Avoid endless loops on erroneous files by ensuring that
2230 we always move forward in the file. */
2231 if (p >= cof->raw_syments + p->u.syment.n_value)
2234 p = cof->raw_syments + p->u.syment.n_value;
2235 if (p > pend || p->u.syment.n_sclass != C_FILE)
2240 /* Now wander though the raw linenumbers of the section. */
2241 /* If we have been called on this section before, and the offset we
2242 want is further down then we can prime the lookup loop. */
2243 sec_data = coff_section_data (abfd, section);
2244 if (sec_data != NULL
2246 && offset >= sec_data->offset)
2249 *functionname_ptr = sec_data->function;
2250 line_base = sec_data->line_base;
2258 if (section->lineno != NULL)
2260 bfd_vma last_value = 0;
2262 l = §ion->lineno[i];
2264 for (; i < section->lineno_count; i++)
2266 if (l->line_number == 0)
2268 /* Get the symbol this line number points at. */
2269 coff_symbol_type *coff = (coff_symbol_type *) (l->u.sym);
2270 if (coff->symbol.value > offset)
2272 *functionname_ptr = coff->symbol.name;
2273 last_value = coff->symbol.value;
2276 combined_entry_type *s = coff->native;
2277 s = s + 1 + s->u.syment.n_numaux;
2279 /* In XCOFF a debugging symbol can follow the
2281 if (s->u.syment.n_scnum == N_DEBUG)
2282 s = s + 1 + s->u.syment.n_numaux;
2284 /* S should now point to the .bf of the function. */
2285 if (s->u.syment.n_numaux)
2287 /* The linenumber is stored in the auxent. */
2288 union internal_auxent *a = &((s + 1)->u.auxent);
2289 line_base = a->x_sym.x_misc.x_lnsz.x_lnno;
2290 *line_ptr = line_base;
2296 if (l->u.offset > offset)
2298 *line_ptr = l->line_number + line_base - 1;
2303 /* If we fell off the end of the loop, then assume that this
2304 symbol has no line number info. Otherwise, symbols with no
2305 line number info get reported with the line number of the
2306 last line of the last symbol which does have line number
2307 info. We use 0x100 as a slop to account for cases where the
2308 last line has executable code. */
2309 if (i >= section->lineno_count
2311 && offset - last_value > 0x100)
2313 *functionname_ptr = NULL;
2318 /* Cache the results for the next call. */
2319 if (sec_data == NULL && section->owner == abfd)
2321 amt = sizeof (struct coff_section_tdata);
2322 section->used_by_bfd = bfd_zalloc (abfd, amt);
2323 sec_data = (struct coff_section_tdata *) section->used_by_bfd;
2325 if (sec_data != NULL)
2327 sec_data->offset = offset;
2328 sec_data->i = i - 1;
2329 sec_data->function = *functionname_ptr;
2330 sec_data->line_base = line_base;
2337 coff_find_nearest_line (bfd *abfd,
2341 const char **filename_ptr,
2342 const char **functionname_ptr,
2343 unsigned int *line_ptr)
2345 return coff_find_nearest_line_with_names (abfd, dwarf_debug_sections,
2346 section, symbols, offset,
2347 filename_ptr, functionname_ptr,
2352 coff_find_inliner_info (bfd *abfd,
2353 const char **filename_ptr,
2354 const char **functionname_ptr,
2355 unsigned int *line_ptr)
2359 found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr,
2360 functionname_ptr, line_ptr,
2361 &coff_data(abfd)->dwarf2_find_line_info);
2366 coff_sizeof_headers (bfd *abfd, struct bfd_link_info *info)
2370 if (!info->relocatable)
2371 size = bfd_coff_filhsz (abfd) + bfd_coff_aoutsz (abfd);
2373 size = bfd_coff_filhsz (abfd);
2375 size += abfd->section_count * bfd_coff_scnhsz (abfd);
2379 /* Change the class of a coff symbol held by BFD. */
2382 bfd_coff_set_symbol_class (bfd * abfd,
2384 unsigned int symbol_class)
2386 coff_symbol_type * csym;
2388 csym = coff_symbol_from (abfd, symbol);
2391 bfd_set_error (bfd_error_invalid_operation);
2394 else if (csym->native == NULL)
2396 /* This is an alien symbol which no native coff backend data.
2397 We cheat here by creating a fake native entry for it and
2398 then filling in the class. This code is based on that in
2399 coff_write_alien_symbol(). */
2401 combined_entry_type * native;
2402 bfd_size_type amt = sizeof (* native);
2404 native = (combined_entry_type *) bfd_zalloc (abfd, amt);
2408 native->u.syment.n_type = T_NULL;
2409 native->u.syment.n_sclass = symbol_class;
2411 if (bfd_is_und_section (symbol->section))
2413 native->u.syment.n_scnum = N_UNDEF;
2414 native->u.syment.n_value = symbol->value;
2416 else if (bfd_is_com_section (symbol->section))
2418 native->u.syment.n_scnum = N_UNDEF;
2419 native->u.syment.n_value = symbol->value;
2423 native->u.syment.n_scnum =
2424 symbol->section->output_section->target_index;
2425 native->u.syment.n_value = (symbol->value
2426 + symbol->section->output_offset);
2427 if (! obj_pe (abfd))
2428 native->u.syment.n_value += symbol->section->output_section->vma;
2430 /* Copy the any flags from the file header into the symbol.
2432 native->u.syment.n_flags = bfd_asymbol_bfd (& csym->symbol)->flags;
2435 csym->native = native;
2438 csym->native->u.syment.n_sclass = symbol_class;
2443 struct coff_comdat_info *
2444 bfd_coff_get_comdat_section (bfd *abfd, struct bfd_section *sec)
2446 if (bfd_get_flavour (abfd) == bfd_target_coff_flavour
2447 && coff_section_data (abfd, sec) != NULL)
2448 return coff_section_data (abfd, sec)->comdat;
2454 _bfd_coff_section_already_linked (bfd *abfd,
2456 struct bfd_link_info *info)
2459 const char *name, *key;
2460 struct bfd_section_already_linked *l;
2461 struct bfd_section_already_linked_hash_entry *already_linked_list;
2462 struct coff_comdat_info *s_comdat;
2465 if ((flags & SEC_LINK_ONCE) == 0)
2468 /* The COFF backend linker doesn't support group sections. */
2469 if ((flags & SEC_GROUP) != 0)
2472 name = bfd_get_section_name (abfd, sec);
2473 s_comdat = bfd_coff_get_comdat_section (abfd, sec);
2475 if (s_comdat != NULL)
2476 key = s_comdat->name;
2479 if (CONST_STRNEQ (name, ".gnu.linkonce.")
2480 && (key = strchr (name + sizeof (".gnu.linkonce.") - 1, '.')) != NULL)
2483 /* FIXME: gcc as of 2011-09 emits sections like .text$<key>,
2484 .xdata$<key> and .pdata$<key> only the first of which has a
2485 comdat key. Should these all match the LTO IR key? */
2489 already_linked_list = bfd_section_already_linked_table_lookup (key);
2491 for (l = already_linked_list->entry; l != NULL; l = l->next)
2493 struct coff_comdat_info *l_comdat;
2495 l_comdat = bfd_coff_get_comdat_section (l->sec->owner, l->sec);
2497 /* The section names must match, and both sections must be
2498 comdat and have the same comdat name, or both sections must
2499 be non-comdat. LTO IR plugin sections are an exception. They
2500 are always named .gnu.linkonce.t.<key> (<key> is some string)
2501 and match any comdat section with comdat name of <key>, and
2502 any linkonce section with the same suffix, ie.
2503 .gnu.linkonce.*.<key>. */
2504 if (((s_comdat != NULL) == (l_comdat != NULL)
2505 && strcmp (name, l->sec->name) == 0)
2506 || (l->sec->owner->flags & BFD_PLUGIN) != 0)
2508 /* The section has already been linked. See if we should
2510 return _bfd_handle_already_linked (sec, l, info);
2514 /* This is the first section with this name. Record it. */
2515 if (!bfd_section_already_linked_table_insert (already_linked_list, sec))
2516 info->callbacks->einfo (_("%F%P: already_linked_table: %E\n"));