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,
990 bfd_size_type *string_size_p,
991 asection **debug_string_section_p,
992 bfd_size_type *debug_string_size_p)
994 combined_entry_type *native;
995 combined_entry_type dummy;
996 asection *output_section = symbol->section->output_section
997 ? symbol->section->output_section
999 struct bfd_link_info *link_info = coff_data (abfd)->link_info;
1001 if ((!link_info || link_info->strip_discarded)
1002 && !bfd_is_abs_section (symbol->section)
1003 && symbol->section->output_section == bfd_abs_section_ptr)
1009 native->u.syment.n_type = T_NULL;
1010 native->u.syment.n_flags = 0;
1011 if (bfd_is_und_section (symbol->section))
1013 native->u.syment.n_scnum = N_UNDEF;
1014 native->u.syment.n_value = symbol->value;
1016 else if (bfd_is_com_section (symbol->section))
1018 native->u.syment.n_scnum = N_UNDEF;
1019 native->u.syment.n_value = symbol->value;
1021 else if (symbol->flags & BSF_DEBUGGING)
1023 /* There isn't much point to writing out a debugging symbol
1024 unless we are prepared to convert it into COFF debugging
1025 format. So, we just ignore them. We must clobber the symbol
1026 name to keep it from being put in the string table. */
1032 native->u.syment.n_scnum = output_section->target_index;
1033 native->u.syment.n_value = (symbol->value
1034 + symbol->section->output_offset);
1035 if (! obj_pe (abfd))
1036 native->u.syment.n_value += output_section->vma;
1038 /* Copy the any flags from the file header into the symbol.
1041 coff_symbol_type *c = coff_symbol_from (abfd, symbol);
1042 if (c != (coff_symbol_type *) NULL)
1043 native->u.syment.n_flags = bfd_asymbol_bfd (&c->symbol)->flags;
1047 native->u.syment.n_type = 0;
1048 if (symbol->flags & BSF_LOCAL)
1049 native->u.syment.n_sclass = C_STAT;
1050 else if (symbol->flags & BSF_WEAK)
1051 native->u.syment.n_sclass = obj_pe (abfd) ? C_NT_WEAK : C_WEAKEXT;
1053 native->u.syment.n_sclass = C_EXT;
1054 native->u.syment.n_numaux = 0;
1056 return coff_write_symbol (abfd, symbol, native, written, string_size_p,
1057 debug_string_section_p, debug_string_size_p);
1060 /* Write a native symbol to a COFF file. */
1063 coff_write_native_symbol (bfd *abfd,
1064 coff_symbol_type *symbol,
1066 bfd_size_type *string_size_p,
1067 asection **debug_string_section_p,
1068 bfd_size_type *debug_string_size_p)
1070 combined_entry_type *native = symbol->native;
1071 alent *lineno = symbol->lineno;
1072 struct bfd_link_info *link_info = coff_data (abfd)->link_info;
1074 if ((!link_info || link_info->strip_discarded)
1075 && !bfd_is_abs_section (symbol->symbol.section)
1076 && symbol->symbol.section->output_section == bfd_abs_section_ptr)
1078 symbol->symbol.name = "";
1082 /* If this symbol has an associated line number, we must store the
1083 symbol index in the line number field. We also tag the auxent to
1084 point to the right place in the lineno table. */
1085 if (lineno && !symbol->done_lineno && symbol->symbol.section->owner != NULL)
1087 unsigned int count = 0;
1089 lineno[count].u.offset = *written;
1090 if (native->u.syment.n_numaux)
1092 union internal_auxent *a = &((native + 1)->u.auxent);
1094 a->x_sym.x_fcnary.x_fcn.x_lnnoptr =
1095 symbol->symbol.section->output_section->moving_line_filepos;
1098 /* Count and relocate all other linenumbers. */
1100 while (lineno[count].line_number != 0)
1102 lineno[count].u.offset +=
1103 (symbol->symbol.section->output_section->vma
1104 + symbol->symbol.section->output_offset);
1107 symbol->done_lineno = TRUE;
1109 if (! bfd_is_const_section (symbol->symbol.section->output_section))
1110 symbol->symbol.section->output_section->moving_line_filepos +=
1111 count * bfd_coff_linesz (abfd);
1114 return coff_write_symbol (abfd, &(symbol->symbol), native, written,
1115 string_size_p, debug_string_section_p,
1116 debug_string_size_p);
1120 null_error_handler (const char * fmt ATTRIBUTE_UNUSED, ...)
1124 /* Write out the COFF symbols. */
1127 coff_write_symbols (bfd *abfd)
1129 bfd_size_type string_size;
1130 asection *debug_string_section;
1131 bfd_size_type debug_string_size;
1133 unsigned int limit = bfd_get_symcount (abfd);
1134 bfd_vma written = 0;
1138 debug_string_section = NULL;
1139 debug_string_size = 0;
1141 /* If this target supports long section names, they must be put into
1142 the string table. This is supported by PE. This code must
1143 handle section names just as they are handled in
1144 coff_write_object_contents. */
1145 if (bfd_coff_long_section_names (abfd))
1149 for (o = abfd->sections; o != NULL; o = o->next)
1153 len = strlen (o->name);
1155 string_size += len + 1;
1159 /* Seek to the right place. */
1160 if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0)
1163 /* Output all the symbols we have. */
1165 for (p = abfd->outsymbols, i = 0; i < limit; i++, p++)
1167 asymbol *symbol = *p;
1168 coff_symbol_type *c_symbol = coff_symbol_from (abfd, symbol);
1170 if (c_symbol == (coff_symbol_type *) NULL
1171 || c_symbol->native == (combined_entry_type *) NULL)
1173 if (!coff_write_alien_symbol (abfd, symbol, &written, &string_size,
1174 &debug_string_section,
1175 &debug_string_size))
1180 if (coff_backend_info (abfd)->_bfd_coff_classify_symbol != NULL)
1182 bfd_error_handler_type current_error_handler;
1183 enum coff_symbol_classification sym_class;
1184 unsigned char *n_sclass;
1186 /* Suppress error reporting by bfd_coff_classify_symbol.
1187 Error messages can be generated when we are processing a local
1188 symbol which has no associated section and we do not have to
1189 worry about this, all we need to know is that it is local. */
1190 current_error_handler = bfd_set_error_handler (null_error_handler);
1191 sym_class = bfd_coff_classify_symbol (abfd,
1192 &c_symbol->native->u.syment);
1193 (void) bfd_set_error_handler (current_error_handler);
1195 n_sclass = &c_symbol->native->u.syment.n_sclass;
1197 /* If the symbol class has been changed (eg objcopy/ld script/etc)
1198 we cannot retain the existing sclass from the original symbol.
1199 Weak symbols only have one valid sclass, so just set it always.
1200 If it is not local class and should be, set it C_STAT.
1201 If it is global and not classified as global, or if it is
1202 weak (which is also classified as global), set it C_EXT. */
1204 if (symbol->flags & BSF_WEAK)
1205 *n_sclass = obj_pe (abfd) ? C_NT_WEAK : C_WEAKEXT;
1206 else if (symbol->flags & BSF_LOCAL && sym_class != COFF_SYMBOL_LOCAL)
1208 else if (symbol->flags & BSF_GLOBAL
1209 && (sym_class != COFF_SYMBOL_GLOBAL
1211 || *n_sclass == C_NT_WEAK
1213 || *n_sclass == C_WEAKEXT))
1214 c_symbol->native->u.syment.n_sclass = C_EXT;
1217 if (!coff_write_native_symbol (abfd, c_symbol, &written,
1218 &string_size, &debug_string_section,
1219 &debug_string_size))
1224 obj_raw_syment_count (abfd) = written;
1226 /* Now write out strings. */
1227 if (string_size != 0)
1229 unsigned int size = string_size + STRING_SIZE_SIZE;
1230 bfd_byte buffer[STRING_SIZE_SIZE];
1232 #if STRING_SIZE_SIZE == 4
1233 H_PUT_32 (abfd, size, buffer);
1235 #error Change H_PUT_32
1237 if (bfd_bwrite ((void *) buffer, (bfd_size_type) sizeof (buffer), abfd)
1241 /* Handle long section names. This code must handle section
1242 names just as they are handled in coff_write_object_contents. */
1243 if (bfd_coff_long_section_names (abfd))
1247 for (o = abfd->sections; o != NULL; o = o->next)
1251 len = strlen (o->name);
1254 if (bfd_bwrite (o->name, (bfd_size_type) (len + 1), abfd)
1261 for (p = abfd->outsymbols, i = 0;
1266 size_t name_length = strlen (q->name);
1267 coff_symbol_type *c_symbol = coff_symbol_from (abfd, q);
1270 /* Figure out whether the symbol name should go in the string
1271 table. Symbol names that are short enough are stored
1272 directly in the syment structure. File names permit a
1273 different, longer, length in the syment structure. On
1274 XCOFF, some symbol names are stored in the .debug section
1275 rather than in the string table. */
1277 if (c_symbol == NULL
1278 || c_symbol->native == NULL)
1279 /* This is not a COFF symbol, so it certainly is not a
1280 file name, nor does it go in the .debug section. */
1281 maxlen = bfd_coff_force_symnames_in_strings (abfd) ? 0 : SYMNMLEN;
1283 else if (bfd_coff_symname_in_debug (abfd,
1284 &c_symbol->native->u.syment))
1285 /* This symbol name is in the XCOFF .debug section.
1286 Don't write it into the string table. */
1287 maxlen = name_length;
1289 else if (c_symbol->native->u.syment.n_sclass == C_FILE
1290 && c_symbol->native->u.syment.n_numaux > 0)
1292 if (bfd_coff_force_symnames_in_strings (abfd))
1294 if (bfd_bwrite (".file", (bfd_size_type) 6, abfd) != 6)
1297 maxlen = bfd_coff_filnmlen (abfd);
1300 maxlen = bfd_coff_force_symnames_in_strings (abfd) ? 0 : SYMNMLEN;
1302 if (name_length > maxlen)
1304 if (bfd_bwrite ((void *) (q->name), (bfd_size_type) name_length + 1,
1305 abfd) != name_length + 1)
1312 /* We would normally not write anything here, but we'll write
1313 out 4 so that any stupid coff reader which tries to read the
1314 string table even when there isn't one won't croak. */
1315 unsigned int size = STRING_SIZE_SIZE;
1316 bfd_byte buffer[STRING_SIZE_SIZE];
1318 #if STRING_SIZE_SIZE == 4
1319 H_PUT_32 (abfd, size, buffer);
1321 #error Change H_PUT_32
1323 if (bfd_bwrite ((void *) buffer, (bfd_size_type) STRING_SIZE_SIZE, abfd)
1324 != STRING_SIZE_SIZE)
1328 /* Make sure the .debug section was created to be the correct size.
1329 We should create it ourselves on the fly, but we don't because
1330 BFD won't let us write to any section until we know how large all
1331 the sections are. We could still do it by making another pass
1332 over the symbols. FIXME. */
1333 BFD_ASSERT (debug_string_size == 0
1334 || (debug_string_section != (asection *) NULL
1335 && (BFD_ALIGN (debug_string_size,
1336 1 << debug_string_section->alignment_power)
1337 == debug_string_section->size)));
1343 coff_write_linenumbers (bfd *abfd)
1346 bfd_size_type linesz;
1349 linesz = bfd_coff_linesz (abfd);
1350 buff = bfd_alloc (abfd, linesz);
1353 for (s = abfd->sections; s != (asection *) NULL; s = s->next)
1355 if (s->lineno_count)
1357 asymbol **q = abfd->outsymbols;
1358 if (bfd_seek (abfd, s->line_filepos, SEEK_SET) != 0)
1360 /* Find all the linenumbers in this section. */
1364 if (p->section->output_section == s)
1367 BFD_SEND (bfd_asymbol_bfd (p), _get_lineno,
1368 (bfd_asymbol_bfd (p), p));
1371 /* Found a linenumber entry, output. */
1372 struct internal_lineno out;
1373 memset ((void *) & out, 0, sizeof (out));
1375 out.l_addr.l_symndx = l->u.offset;
1376 bfd_coff_swap_lineno_out (abfd, &out, buff);
1377 if (bfd_bwrite (buff, (bfd_size_type) linesz, abfd)
1381 while (l->line_number)
1383 out.l_lnno = l->line_number;
1384 out.l_addr.l_symndx = l->u.offset;
1385 bfd_coff_swap_lineno_out (abfd, &out, buff);
1386 if (bfd_bwrite (buff, (bfd_size_type) linesz, abfd)
1397 bfd_release (abfd, buff);
1402 coff_get_lineno (bfd *ignore_abfd ATTRIBUTE_UNUSED, asymbol *symbol)
1404 return coffsymbol (symbol)->lineno;
1407 /* This function transforms the offsets into the symbol table into
1408 pointers to syments. */
1411 coff_pointerize_aux (bfd *abfd,
1412 combined_entry_type *table_base,
1413 combined_entry_type *symbol,
1414 unsigned int indaux,
1415 combined_entry_type *auxent)
1417 unsigned int type = symbol->u.syment.n_type;
1418 unsigned int n_sclass = symbol->u.syment.n_sclass;
1420 if (coff_backend_info (abfd)->_bfd_coff_pointerize_aux_hook)
1422 if ((*coff_backend_info (abfd)->_bfd_coff_pointerize_aux_hook)
1423 (abfd, table_base, symbol, indaux, auxent))
1427 /* Don't bother if this is a file or a section. */
1428 if (n_sclass == C_STAT && type == T_NULL)
1430 if (n_sclass == C_FILE)
1433 /* Otherwise patch up. */
1434 #define N_TMASK coff_data (abfd)->local_n_tmask
1435 #define N_BTSHFT coff_data (abfd)->local_n_btshft
1437 if ((ISFCN (type) || ISTAG (n_sclass) || n_sclass == C_BLOCK
1438 || n_sclass == C_FCN)
1439 && auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l > 0)
1441 auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p =
1442 table_base + auxent->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l;
1443 auxent->fix_end = 1;
1445 /* A negative tagndx is meaningless, but the SCO 3.2v4 cc can
1446 generate one, so we must be careful to ignore it. */
1447 if (auxent->u.auxent.x_sym.x_tagndx.l > 0)
1449 auxent->u.auxent.x_sym.x_tagndx.p =
1450 table_base + auxent->u.auxent.x_sym.x_tagndx.l;
1451 auxent->fix_tag = 1;
1455 /* Allocate space for the ".debug" section, and read it.
1456 We did not read the debug section until now, because
1457 we didn't want to go to the trouble until someone needed it. */
1460 build_debug_section (bfd *abfd)
1462 char *debug_section;
1464 bfd_size_type sec_size;
1466 asection *sect = bfd_get_section_by_name (abfd, ".debug");
1470 bfd_set_error (bfd_error_no_debug_section);
1474 sec_size = sect->size;
1475 debug_section = (char *) bfd_alloc (abfd, sec_size);
1476 if (debug_section == NULL)
1479 /* Seek to the beginning of the `.debug' section and read it.
1480 Save the current position first; it is needed by our caller.
1481 Then read debug section and reset the file pointer. */
1483 position = bfd_tell (abfd);
1484 if (bfd_seek (abfd, sect->filepos, SEEK_SET) != 0
1485 || bfd_bread (debug_section, sec_size, abfd) != sec_size
1486 || bfd_seek (abfd, position, SEEK_SET) != 0)
1488 return debug_section;
1491 /* Return a pointer to a malloc'd copy of 'name'. 'name' may not be
1492 \0-terminated, but will not exceed 'maxlen' characters. The copy *will*
1493 be \0-terminated. */
1496 copy_name (bfd *abfd, char *name, size_t maxlen)
1501 for (len = 0; len < maxlen; ++len)
1502 if (name[len] == '\0')
1505 if ((newname = (char *) bfd_alloc (abfd, (bfd_size_type) len + 1)) == NULL)
1508 strncpy (newname, name, len);
1509 newname[len] = '\0';
1513 /* Read in the external symbols. */
1516 _bfd_coff_get_external_symbols (bfd *abfd)
1518 bfd_size_type symesz;
1522 if (obj_coff_external_syms (abfd) != NULL)
1525 symesz = bfd_coff_symesz (abfd);
1527 size = obj_raw_syment_count (abfd) * symesz;
1531 syms = bfd_malloc (size);
1535 if (bfd_seek (abfd, obj_sym_filepos (abfd), SEEK_SET) != 0
1536 || bfd_bread (syms, size, abfd) != size)
1543 obj_coff_external_syms (abfd) = syms;
1548 /* Read in the external strings. The strings are not loaded until
1549 they are needed. This is because we have no simple way of
1550 detecting a missing string table in an archive. */
1553 _bfd_coff_read_string_table (bfd *abfd)
1555 char extstrsize[STRING_SIZE_SIZE];
1556 bfd_size_type strsize;
1560 if (obj_coff_strings (abfd) != NULL)
1561 return obj_coff_strings (abfd);
1563 if (obj_sym_filepos (abfd) == 0)
1565 bfd_set_error (bfd_error_no_symbols);
1569 pos = obj_sym_filepos (abfd);
1570 pos += obj_raw_syment_count (abfd) * bfd_coff_symesz (abfd);
1571 if (bfd_seek (abfd, pos, SEEK_SET) != 0)
1574 if (bfd_bread (extstrsize, (bfd_size_type) sizeof extstrsize, abfd)
1575 != sizeof extstrsize)
1577 if (bfd_get_error () != bfd_error_file_truncated)
1580 /* There is no string table. */
1581 strsize = STRING_SIZE_SIZE;
1585 #if STRING_SIZE_SIZE == 4
1586 strsize = H_GET_32 (abfd, extstrsize);
1588 #error Change H_GET_32
1592 if (strsize < STRING_SIZE_SIZE)
1594 (*_bfd_error_handler)
1595 (_("%B: bad string table size %lu"), abfd, (unsigned long) strsize);
1596 bfd_set_error (bfd_error_bad_value);
1600 strings = (char *) bfd_malloc (strsize);
1601 if (strings == NULL)
1604 if (bfd_bread (strings + STRING_SIZE_SIZE, strsize - STRING_SIZE_SIZE, abfd)
1605 != strsize - STRING_SIZE_SIZE)
1611 obj_coff_strings (abfd) = strings;
1616 /* Free up the external symbols and strings read from a COFF file. */
1619 _bfd_coff_free_symbols (bfd *abfd)
1621 if (obj_coff_external_syms (abfd) != NULL
1622 && ! obj_coff_keep_syms (abfd))
1624 free (obj_coff_external_syms (abfd));
1625 obj_coff_external_syms (abfd) = NULL;
1627 if (obj_coff_strings (abfd) != NULL
1628 && ! obj_coff_keep_strings (abfd))
1630 free (obj_coff_strings (abfd));
1631 obj_coff_strings (abfd) = NULL;
1636 /* Read a symbol table into freshly bfd_allocated memory, swap it, and
1637 knit the symbol names into a normalized form. By normalized here I
1638 mean that all symbols have an n_offset pointer that points to a null-
1639 terminated string. */
1641 combined_entry_type *
1642 coff_get_normalized_symtab (bfd *abfd)
1644 combined_entry_type *internal;
1645 combined_entry_type *internal_ptr;
1646 combined_entry_type *symbol_ptr;
1647 combined_entry_type *internal_end;
1651 const char *string_table = NULL;
1652 char *debug_section = NULL;
1655 if (obj_raw_syments (abfd) != NULL)
1656 return obj_raw_syments (abfd);
1658 size = obj_raw_syment_count (abfd) * sizeof (combined_entry_type);
1659 internal = (combined_entry_type *) bfd_zalloc (abfd, size);
1660 if (internal == NULL && size != 0)
1662 internal_end = internal + obj_raw_syment_count (abfd);
1664 if (! _bfd_coff_get_external_symbols (abfd))
1667 raw_src = (char *) obj_coff_external_syms (abfd);
1669 /* Mark the end of the symbols. */
1670 symesz = bfd_coff_symesz (abfd);
1671 raw_end = (char *) raw_src + obj_raw_syment_count (abfd) * symesz;
1673 /* FIXME SOMEDAY. A string table size of zero is very weird, but
1674 probably possible. If one shows up, it will probably kill us. */
1676 /* Swap all the raw entries. */
1677 for (internal_ptr = internal;
1679 raw_src += symesz, internal_ptr++)
1683 bfd_coff_swap_sym_in (abfd, (void *) raw_src,
1684 (void *) & internal_ptr->u.syment);
1685 symbol_ptr = internal_ptr;
1688 i < symbol_ptr->u.syment.n_numaux;
1693 bfd_coff_swap_aux_in (abfd, (void *) raw_src,
1694 symbol_ptr->u.syment.n_type,
1695 symbol_ptr->u.syment.n_sclass,
1696 (int) i, symbol_ptr->u.syment.n_numaux,
1697 &(internal_ptr->u.auxent));
1698 coff_pointerize_aux (abfd, internal, symbol_ptr, i,
1703 /* Free the raw symbols, but not the strings (if we have them). */
1704 obj_coff_keep_strings (abfd) = TRUE;
1705 if (! _bfd_coff_free_symbols (abfd))
1708 for (internal_ptr = internal; internal_ptr < internal_end;
1711 if (internal_ptr->u.syment.n_sclass == C_FILE
1712 && internal_ptr->u.syment.n_numaux > 0)
1714 /* Make a file symbol point to the name in the auxent, since
1715 the text ".file" is redundant. */
1716 if ((internal_ptr + 1)->u.auxent.x_file.x_n.x_zeroes == 0)
1718 /* The filename is a long one, point into the string table. */
1719 if (string_table == NULL)
1721 string_table = _bfd_coff_read_string_table (abfd);
1722 if (string_table == NULL)
1726 internal_ptr->u.syment._n._n_n._n_offset =
1729 + (internal_ptr + 1)->u.auxent.x_file.x_n.x_offset));
1733 /* Ordinary short filename, put into memory anyway. The
1734 Microsoft PE tools sometimes store a filename in
1735 multiple AUX entries. */
1736 if (internal_ptr->u.syment.n_numaux > 1
1737 && coff_data (abfd)->pe)
1738 internal_ptr->u.syment._n._n_n._n_offset =
1741 (internal_ptr + 1)->u.auxent.x_file.x_fname,
1742 internal_ptr->u.syment.n_numaux * symesz));
1744 internal_ptr->u.syment._n._n_n._n_offset =
1747 (internal_ptr + 1)->u.auxent.x_file.x_fname,
1748 (size_t) bfd_coff_filnmlen (abfd)));
1753 if (internal_ptr->u.syment._n._n_n._n_zeroes != 0)
1755 /* This is a "short" name. Make it long. */
1759 /* Find the length of this string without walking into memory
1761 for (i = 0; i < 8; ++i)
1762 if (internal_ptr->u.syment._n._n_name[i] == '\0')
1765 newstring = (char *) bfd_zalloc (abfd, (bfd_size_type) (i + 1));
1766 if (newstring == NULL)
1768 strncpy (newstring, internal_ptr->u.syment._n._n_name, i);
1769 internal_ptr->u.syment._n._n_n._n_offset = (bfd_hostptr_t) newstring;
1770 internal_ptr->u.syment._n._n_n._n_zeroes = 0;
1772 else if (internal_ptr->u.syment._n._n_n._n_offset == 0)
1773 internal_ptr->u.syment._n._n_n._n_offset = (bfd_hostptr_t) "";
1774 else if (!bfd_coff_symname_in_debug (abfd, &internal_ptr->u.syment))
1776 /* Long name already. Point symbol at the string in the
1778 if (string_table == NULL)
1780 string_table = _bfd_coff_read_string_table (abfd);
1781 if (string_table == NULL)
1784 internal_ptr->u.syment._n._n_n._n_offset =
1787 + internal_ptr->u.syment._n._n_n._n_offset));
1791 /* Long name in debug section. Very similar. */
1792 if (debug_section == NULL)
1793 debug_section = build_debug_section (abfd);
1794 internal_ptr->u.syment._n._n_n._n_offset = (bfd_hostptr_t)
1795 (debug_section + internal_ptr->u.syment._n._n_n._n_offset);
1798 internal_ptr += internal_ptr->u.syment.n_numaux;
1801 obj_raw_syments (abfd) = internal;
1802 BFD_ASSERT (obj_raw_syment_count (abfd)
1803 == (unsigned int) (internal_ptr - internal));
1809 coff_get_reloc_upper_bound (bfd *abfd, sec_ptr asect)
1811 if (bfd_get_format (abfd) != bfd_object)
1813 bfd_set_error (bfd_error_invalid_operation);
1816 return (asect->reloc_count + 1) * sizeof (arelent *);
1820 coff_make_empty_symbol (bfd *abfd)
1822 bfd_size_type amt = sizeof (coff_symbol_type);
1823 coff_symbol_type *new_symbol = (coff_symbol_type *) bfd_zalloc (abfd, amt);
1825 if (new_symbol == NULL)
1827 new_symbol->symbol.section = 0;
1828 new_symbol->native = 0;
1829 new_symbol->lineno = NULL;
1830 new_symbol->done_lineno = FALSE;
1831 new_symbol->symbol.the_bfd = abfd;
1833 return & new_symbol->symbol;
1836 /* Make a debugging symbol. */
1839 coff_bfd_make_debug_symbol (bfd *abfd,
1840 void * ptr ATTRIBUTE_UNUSED,
1841 unsigned long sz ATTRIBUTE_UNUSED)
1843 bfd_size_type amt = sizeof (coff_symbol_type);
1844 coff_symbol_type *new_symbol = (coff_symbol_type *) bfd_alloc (abfd, amt);
1846 if (new_symbol == NULL)
1848 /* @@ The 10 is a guess at a plausible maximum number of aux entries
1849 (but shouldn't be a constant). */
1850 amt = sizeof (combined_entry_type) * 10;
1851 new_symbol->native = (combined_entry_type *) bfd_zalloc (abfd, amt);
1852 if (!new_symbol->native)
1854 new_symbol->symbol.section = bfd_abs_section_ptr;
1855 new_symbol->symbol.flags = BSF_DEBUGGING;
1856 new_symbol->lineno = NULL;
1857 new_symbol->done_lineno = FALSE;
1858 new_symbol->symbol.the_bfd = abfd;
1860 return & new_symbol->symbol;
1864 coff_get_symbol_info (bfd *abfd, asymbol *symbol, symbol_info *ret)
1866 bfd_symbol_info (symbol, ret);
1868 if (coffsymbol (symbol)->native != NULL
1869 && coffsymbol (symbol)->native->fix_value)
1870 ret->value = coffsymbol (symbol)->native->u.syment.n_value -
1871 (bfd_hostptr_t) obj_raw_syments (abfd);
1874 /* Return the COFF syment for a symbol. */
1877 bfd_coff_get_syment (bfd *abfd,
1879 struct internal_syment *psyment)
1881 coff_symbol_type *csym;
1883 csym = coff_symbol_from (abfd, symbol);
1884 if (csym == NULL || csym->native == NULL)
1886 bfd_set_error (bfd_error_invalid_operation);
1890 *psyment = csym->native->u.syment;
1892 if (csym->native->fix_value)
1893 psyment->n_value = psyment->n_value -
1894 (bfd_hostptr_t) obj_raw_syments (abfd);
1896 /* FIXME: We should handle fix_line here. */
1901 /* Return the COFF auxent for a symbol. */
1904 bfd_coff_get_auxent (bfd *abfd,
1907 union internal_auxent *pauxent)
1909 coff_symbol_type *csym;
1910 combined_entry_type *ent;
1912 csym = coff_symbol_from (abfd, symbol);
1915 || csym->native == NULL
1916 || indx >= csym->native->u.syment.n_numaux)
1918 bfd_set_error (bfd_error_invalid_operation);
1922 ent = csym->native + indx + 1;
1924 *pauxent = ent->u.auxent;
1927 pauxent->x_sym.x_tagndx.l =
1928 ((combined_entry_type *) pauxent->x_sym.x_tagndx.p
1929 - obj_raw_syments (abfd));
1932 pauxent->x_sym.x_fcnary.x_fcn.x_endndx.l =
1933 ((combined_entry_type *) pauxent->x_sym.x_fcnary.x_fcn.x_endndx.p
1934 - obj_raw_syments (abfd));
1936 if (ent->fix_scnlen)
1937 pauxent->x_csect.x_scnlen.l =
1938 ((combined_entry_type *) pauxent->x_csect.x_scnlen.p
1939 - obj_raw_syments (abfd));
1944 /* Print out information about COFF symbol. */
1947 coff_print_symbol (bfd *abfd,
1950 bfd_print_symbol_type how)
1952 FILE * file = (FILE *) filep;
1956 case bfd_print_symbol_name:
1957 fprintf (file, "%s", symbol->name);
1960 case bfd_print_symbol_more:
1961 fprintf (file, "coff %s %s",
1962 coffsymbol (symbol)->native ? "n" : "g",
1963 coffsymbol (symbol)->lineno ? "l" : " ");
1966 case bfd_print_symbol_all:
1967 if (coffsymbol (symbol)->native)
1971 combined_entry_type *combined = coffsymbol (symbol)->native;
1972 combined_entry_type *root = obj_raw_syments (abfd);
1973 struct lineno_cache_entry *l = coffsymbol (symbol)->lineno;
1975 fprintf (file, "[%3ld]", (long) (combined - root));
1977 if (! combined->fix_value)
1978 val = (bfd_vma) combined->u.syment.n_value;
1980 val = combined->u.syment.n_value - (bfd_hostptr_t) root;
1982 fprintf (file, "(sec %2d)(fl 0x%02x)(ty %3x)(scl %3d) (nx %d) 0x",
1983 combined->u.syment.n_scnum,
1984 combined->u.syment.n_flags,
1985 combined->u.syment.n_type,
1986 combined->u.syment.n_sclass,
1987 combined->u.syment.n_numaux);
1988 bfd_fprintf_vma (abfd, file, val);
1989 fprintf (file, " %s", symbol->name);
1991 for (aux = 0; aux < combined->u.syment.n_numaux; aux++)
1993 combined_entry_type *auxp = combined + aux + 1;
1997 tagndx = auxp->u.auxent.x_sym.x_tagndx.p - root;
1999 tagndx = auxp->u.auxent.x_sym.x_tagndx.l;
2001 fprintf (file, "\n");
2003 if (bfd_coff_print_aux (abfd, file, root, combined, auxp, aux))
2006 switch (combined->u.syment.n_sclass)
2009 fprintf (file, "File ");
2013 if (combined->u.syment.n_type == T_NULL)
2014 /* Probably a section symbol ? */
2016 fprintf (file, "AUX scnlen 0x%lx nreloc %d nlnno %d",
2017 (unsigned long) auxp->u.auxent.x_scn.x_scnlen,
2018 auxp->u.auxent.x_scn.x_nreloc,
2019 auxp->u.auxent.x_scn.x_nlinno);
2020 if (auxp->u.auxent.x_scn.x_checksum != 0
2021 || auxp->u.auxent.x_scn.x_associated != 0
2022 || auxp->u.auxent.x_scn.x_comdat != 0)
2023 fprintf (file, " checksum 0x%lx assoc %d comdat %d",
2024 auxp->u.auxent.x_scn.x_checksum,
2025 auxp->u.auxent.x_scn.x_associated,
2026 auxp->u.auxent.x_scn.x_comdat);
2029 /* Otherwise fall through. */
2032 if (ISFCN (combined->u.syment.n_type))
2037 next = (auxp->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p
2040 next = auxp->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.l;
2041 llnos = auxp->u.auxent.x_sym.x_fcnary.x_fcn.x_lnnoptr;
2043 "AUX tagndx %ld ttlsiz 0x%lx lnnos %ld next %ld",
2045 (unsigned long) auxp->u.auxent.x_sym.x_misc.x_fsize,
2049 /* Otherwise fall through. */
2051 fprintf (file, "AUX lnno %d size 0x%x tagndx %ld",
2052 auxp->u.auxent.x_sym.x_misc.x_lnsz.x_lnno,
2053 auxp->u.auxent.x_sym.x_misc.x_lnsz.x_size,
2056 fprintf (file, " endndx %ld",
2058 (auxp->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p
2066 fprintf (file, "\n%s :", l->u.sym->name);
2068 while (l->line_number)
2070 fprintf (file, "\n%4d : ", l->line_number);
2071 bfd_fprintf_vma (abfd, file, l->u.offset + symbol->section->vma);
2078 bfd_print_symbol_vandf (abfd, (void *) file, symbol);
2079 fprintf (file, " %-5s %s %s %s",
2080 symbol->section->name,
2081 coffsymbol (symbol)->native ? "n" : "g",
2082 coffsymbol (symbol)->lineno ? "l" : " ",
2088 /* Return whether a symbol name implies a local symbol. In COFF,
2089 local symbols generally start with ``.L''. Most targets use this
2090 function for the is_local_label_name entry point, but some may
2094 _bfd_coff_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED,
2097 return name[0] == '.' && name[1] == 'L';
2100 /* Provided a BFD, a section and an offset (in bytes, not octets) into the
2101 section, calculate and return the name of the source file and the line
2102 nearest to the wanted location. */
2105 coff_find_nearest_line_with_names (bfd *abfd,
2106 const struct dwarf_debug_section *debug_sections,
2110 const char **filename_ptr,
2111 const char **functionname_ptr,
2112 unsigned int *line_ptr)
2116 unsigned int line_base;
2117 coff_data_type *cof = coff_data (abfd);
2118 /* Run through the raw syments if available. */
2119 combined_entry_type *p;
2120 combined_entry_type *pend;
2122 struct coff_section_tdata *sec_data;
2125 /* Before looking through the symbol table, try to use a .stab
2126 section to find the information. */
2127 if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset,
2128 &found, filename_ptr,
2129 functionname_ptr, line_ptr,
2130 &coff_data(abfd)->line_info))
2136 /* Also try examining DWARF2 debugging information. */
2137 if (_bfd_dwarf2_find_nearest_line (abfd, debug_sections,
2138 section, symbols, offset,
2139 filename_ptr, functionname_ptr,
2141 &coff_data(abfd)->dwarf2_find_line_info))
2145 *functionname_ptr = 0;
2148 /* Don't try and find line numbers in a non coff file. */
2149 if (!bfd_family_coff (abfd))
2155 /* Find the first C_FILE symbol. */
2156 p = cof->raw_syments;
2160 pend = p + cof->raw_syment_count;
2163 if (p->u.syment.n_sclass == C_FILE)
2165 p += 1 + p->u.syment.n_numaux;
2173 /* Look through the C_FILE symbols to find the best one. */
2174 sec_vma = bfd_get_section_vma (abfd, section);
2175 *filename_ptr = (char *) p->u.syment._n._n_n._n_offset;
2176 maxdiff = (bfd_vma) 0 - (bfd_vma) 1;
2180 combined_entry_type *p2;
2182 for (p2 = p + 1 + p->u.syment.n_numaux;
2184 p2 += 1 + p2->u.syment.n_numaux)
2186 if (p2->u.syment.n_scnum > 0
2188 == coff_section_from_bfd_index (abfd,
2189 p2->u.syment.n_scnum)))
2191 if (p2->u.syment.n_sclass == C_FILE)
2198 file_addr = (bfd_vma) p2->u.syment.n_value;
2199 /* PR 11512: Include the section address of the function name symbol. */
2200 if (p2->u.syment.n_scnum > 0)
2201 file_addr += coff_section_from_bfd_index (abfd,
2202 p2->u.syment.n_scnum)->vma;
2203 /* We use <= MAXDIFF here so that if we get a zero length
2204 file, we actually use the next file entry. */
2206 && offset + sec_vma >= file_addr
2207 && offset + sec_vma - file_addr <= maxdiff)
2209 *filename_ptr = (char *) p->u.syment._n._n_n._n_offset;
2210 maxdiff = offset + sec_vma - p2->u.syment.n_value;
2213 /* Avoid endless loops on erroneous files by ensuring that
2214 we always move forward in the file. */
2215 if (p >= cof->raw_syments + p->u.syment.n_value)
2218 p = cof->raw_syments + p->u.syment.n_value;
2219 if (p > pend || p->u.syment.n_sclass != C_FILE)
2224 /* Now wander though the raw linenumbers of the section. */
2225 /* If we have been called on this section before, and the offset we
2226 want is further down then we can prime the lookup loop. */
2227 sec_data = coff_section_data (abfd, section);
2228 if (sec_data != NULL
2230 && offset >= sec_data->offset)
2233 *functionname_ptr = sec_data->function;
2234 line_base = sec_data->line_base;
2242 if (section->lineno != NULL)
2244 bfd_vma last_value = 0;
2246 l = §ion->lineno[i];
2248 for (; i < section->lineno_count; i++)
2250 if (l->line_number == 0)
2252 /* Get the symbol this line number points at. */
2253 coff_symbol_type *coff = (coff_symbol_type *) (l->u.sym);
2254 if (coff->symbol.value > offset)
2256 *functionname_ptr = coff->symbol.name;
2257 last_value = coff->symbol.value;
2260 combined_entry_type *s = coff->native;
2261 s = s + 1 + s->u.syment.n_numaux;
2263 /* In XCOFF a debugging symbol can follow the
2265 if (s->u.syment.n_scnum == N_DEBUG)
2266 s = s + 1 + s->u.syment.n_numaux;
2268 /* S should now point to the .bf of the function. */
2269 if (s->u.syment.n_numaux)
2271 /* The linenumber is stored in the auxent. */
2272 union internal_auxent *a = &((s + 1)->u.auxent);
2273 line_base = a->x_sym.x_misc.x_lnsz.x_lnno;
2274 *line_ptr = line_base;
2280 if (l->u.offset > offset)
2282 *line_ptr = l->line_number + line_base - 1;
2287 /* If we fell off the end of the loop, then assume that this
2288 symbol has no line number info. Otherwise, symbols with no
2289 line number info get reported with the line number of the
2290 last line of the last symbol which does have line number
2291 info. We use 0x100 as a slop to account for cases where the
2292 last line has executable code. */
2293 if (i >= section->lineno_count
2295 && offset - last_value > 0x100)
2297 *functionname_ptr = NULL;
2302 /* Cache the results for the next call. */
2303 if (sec_data == NULL && section->owner == abfd)
2305 amt = sizeof (struct coff_section_tdata);
2306 section->used_by_bfd = bfd_zalloc (abfd, amt);
2307 sec_data = (struct coff_section_tdata *) section->used_by_bfd;
2309 if (sec_data != NULL)
2311 sec_data->offset = offset;
2312 sec_data->i = i - 1;
2313 sec_data->function = *functionname_ptr;
2314 sec_data->line_base = line_base;
2321 coff_find_nearest_line (bfd *abfd,
2325 const char **filename_ptr,
2326 const char **functionname_ptr,
2327 unsigned int *line_ptr)
2329 return coff_find_nearest_line_with_names (abfd, dwarf_debug_sections,
2330 section, symbols, offset,
2331 filename_ptr, functionname_ptr,
2336 coff_find_inliner_info (bfd *abfd,
2337 const char **filename_ptr,
2338 const char **functionname_ptr,
2339 unsigned int *line_ptr)
2343 found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr,
2344 functionname_ptr, line_ptr,
2345 &coff_data(abfd)->dwarf2_find_line_info);
2350 coff_sizeof_headers (bfd *abfd, struct bfd_link_info *info)
2354 if (!info->relocatable)
2355 size = bfd_coff_filhsz (abfd) + bfd_coff_aoutsz (abfd);
2357 size = bfd_coff_filhsz (abfd);
2359 size += abfd->section_count * bfd_coff_scnhsz (abfd);
2363 /* Change the class of a coff symbol held by BFD. */
2366 bfd_coff_set_symbol_class (bfd * abfd,
2368 unsigned int symbol_class)
2370 coff_symbol_type * csym;
2372 csym = coff_symbol_from (abfd, symbol);
2375 bfd_set_error (bfd_error_invalid_operation);
2378 else if (csym->native == NULL)
2380 /* This is an alien symbol which no native coff backend data.
2381 We cheat here by creating a fake native entry for it and
2382 then filling in the class. This code is based on that in
2383 coff_write_alien_symbol(). */
2385 combined_entry_type * native;
2386 bfd_size_type amt = sizeof (* native);
2388 native = (combined_entry_type *) bfd_zalloc (abfd, amt);
2392 native->u.syment.n_type = T_NULL;
2393 native->u.syment.n_sclass = symbol_class;
2395 if (bfd_is_und_section (symbol->section))
2397 native->u.syment.n_scnum = N_UNDEF;
2398 native->u.syment.n_value = symbol->value;
2400 else if (bfd_is_com_section (symbol->section))
2402 native->u.syment.n_scnum = N_UNDEF;
2403 native->u.syment.n_value = symbol->value;
2407 native->u.syment.n_scnum =
2408 symbol->section->output_section->target_index;
2409 native->u.syment.n_value = (symbol->value
2410 + symbol->section->output_offset);
2411 if (! obj_pe (abfd))
2412 native->u.syment.n_value += symbol->section->output_section->vma;
2414 /* Copy the any flags from the file header into the symbol.
2416 native->u.syment.n_flags = bfd_asymbol_bfd (& csym->symbol)->flags;
2419 csym->native = native;
2422 csym->native->u.syment.n_sclass = symbol_class;
2427 struct coff_comdat_info *
2428 bfd_coff_get_comdat_section (bfd *abfd, struct bfd_section *sec)
2430 if (bfd_get_flavour (abfd) == bfd_target_coff_flavour
2431 && coff_section_data (abfd, sec) != NULL)
2432 return coff_section_data (abfd, sec)->comdat;
2438 _bfd_coff_section_already_linked (bfd *abfd,
2440 struct bfd_link_info *info)
2443 const char *name, *key;
2444 struct bfd_section_already_linked *l;
2445 struct bfd_section_already_linked_hash_entry *already_linked_list;
2446 struct coff_comdat_info *s_comdat;
2449 if ((flags & SEC_LINK_ONCE) == 0)
2452 /* The COFF backend linker doesn't support group sections. */
2453 if ((flags & SEC_GROUP) != 0)
2456 name = bfd_get_section_name (abfd, sec);
2457 s_comdat = bfd_coff_get_comdat_section (abfd, sec);
2459 if (s_comdat != NULL)
2460 key = s_comdat->name;
2463 if (CONST_STRNEQ (name, ".gnu.linkonce.")
2464 && (key = strchr (name + sizeof (".gnu.linkonce.") - 1, '.')) != NULL)
2467 /* FIXME: gcc as of 2011-09 emits sections like .text$<key>,
2468 .xdata$<key> and .pdata$<key> only the first of which has a
2469 comdat key. Should these all match the LTO IR key? */
2473 already_linked_list = bfd_section_already_linked_table_lookup (key);
2475 for (l = already_linked_list->entry; l != NULL; l = l->next)
2477 struct coff_comdat_info *l_comdat;
2479 l_comdat = bfd_coff_get_comdat_section (l->sec->owner, l->sec);
2481 /* The section names must match, and both sections must be
2482 comdat and have the same comdat name, or both sections must
2483 be non-comdat. LTO IR plugin sections are an exception. They
2484 are always named .gnu.linkonce.t.<key> (<key> is some string)
2485 and match any comdat section with comdat name of <key>, and
2486 any linkonce section with the same suffix, ie.
2487 .gnu.linkonce.*.<key>. */
2488 if (((s_comdat != NULL) == (l_comdat != NULL)
2489 && strcmp (name, l->sec->name) == 0)
2490 || (l->sec->owner->flags & BFD_PLUGIN) != 0)
2492 /* The section has already been linked. See if we should
2494 return _bfd_handle_already_linked (sec, l, info);
2498 /* This is the first section with this name. Record it. */
2499 if (!bfd_section_already_linked_table_insert (already_linked_list, sec))
2500 info->callbacks->einfo (_("%F%P: already_linked_table: %E\n"));